diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-11 15:22:55 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-11 15:22:55 -0800 |
| commit | 748e566b7e24541e05e3e70be311887a1262f2a1 (patch) | |
| tree | 41cc3a9aa04918cc17efa575baf6dbf87f40ddba /drivers | |
| parent | 5f1141eb352ea79d849920039503e40dd623fffa (diff) | |
| parent | acf509ae28301d78b022c534c26b1e4765c18f2b (diff) | |
| download | linux-748e566b7e24541e05e3e70be311887a1262f2a1.tar.bz2 | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (122 commits)
USB: mos7840: add device IDs for B&B electronics devices
USB: ftdi_sio: add USB device ID's for B&B Electronics line
USB: musb: musb_host: fix sparse warning
USB: musb: musb_gadget: fix sparse warning
USB: musb: omap2430: fix sparse warning
USB: core: message: fix sparse warning
USB: core: hub: fix sparse warning
USB: core: fix sparse warning for static function
USB: Added USB_ETH_RNDIS to use instead of CONFIG_USB_ETH_RNDIS
USB: Check bandwidth when switching alt settings.
USB: Refactor code to find alternate interface settings.
USB: xhci: Fix command completion after a drop endpoint.
USB: xhci: Make reverting an alt setting "unfailable".
USB: usbtmc: Use usb_clear_halt() instead of custom code.
USB: xhci: Add correct email and files to MAINTAINERS entry.
USB: ehci-omap.c: introduce missing kfree
USB: xhci-mem.c: introduce missing kfree
USB: add remove_id sysfs attr for usb drivers
USB: g_multi kconfig: fix depends and help text
USB: option: add pid for ZTE
...
Diffstat (limited to 'drivers')
91 files changed, 9254 insertions, 1811 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 44bc8bbabf54..4d2905996751 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1066,7 +1066,7 @@ static int btusb_suspend(struct usb_interface *intf, pm_message_t message) return 0; spin_lock_irq(&data->txlock); - if (!(interface_to_usbdev(intf)->auto_pm && data->tx_in_flight)) { + if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) { set_bit(BTUSB_SUSPENDING, &data->flags); spin_unlock_irq(&data->txlock); } else { diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 0258289f3b3e..e2997a8d5e1b 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1253,10 +1253,9 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message) { struct hid_device *hid = usb_get_intfdata(intf); struct usbhid_device *usbhid = hid->driver_data; - struct usb_device *udev = interface_to_usbdev(intf); int status; - if (udev->auto_pm) { + if (message.event & PM_EVENT_AUTO) { spin_lock_irq(&usbhid->lock); /* Sync with error handler */ if (!test_bit(HID_RESET_PENDING, &usbhid->iofl) && !test_bit(HID_CLEAR_HALT, &usbhid->iofl) @@ -1281,7 +1280,7 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message) return -EIO; } - if (!ignoreled && udev->auto_pm) { + if (!ignoreled && (message.event & PM_EVENT_AUTO)) { spin_lock_irq(&usbhid->lock); if (test_bit(HID_LED_ON, &usbhid->iofl)) { spin_unlock_irq(&usbhid->lock); @@ -1294,7 +1293,8 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message) hid_cancel_delayed_stuff(usbhid); hid_cease_io(usbhid); - if (udev->auto_pm && test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { + if ((message.event & PM_EVENT_AUTO) && + test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) { /* lost race against keypresses */ status = hid_start_in(hid); if (status < 0) diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c index 47e84ef355c5..3b48681f8a0d 100644 --- a/drivers/net/wimax/i2400m/usb.c +++ b/drivers/net/wimax/i2400m/usb.c @@ -579,7 +579,7 @@ void i2400mu_disconnect(struct usb_interface *iface) * * As well, the device might refuse going to sleep for whichever * reason. In this case we just fail. For system suspend/hibernate, - * we *can't* fail. We look at usb_dev->auto_pm to see if the + * we *can't* fail. We check PM_EVENT_AUTO to see if the * suspend call comes from the USB stack or from the system and act * in consequence. * @@ -591,14 +591,11 @@ int i2400mu_suspend(struct usb_interface *iface, pm_message_t pm_msg) int result = 0; struct device *dev = &iface->dev; struct i2400mu *i2400mu = usb_get_intfdata(iface); -#ifdef CONFIG_PM - struct usb_device *usb_dev = i2400mu->usb_dev; -#endif unsigned is_autosuspend = 0; struct i2400m *i2400m = &i2400mu->i2400m; #ifdef CONFIG_PM - if (usb_dev->auto_pm > 0) + if (pm_msg.event & PM_EVENT_AUTO) is_autosuspend = 1; #endif diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 240750881d28..81aac7f4ca59 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -60,6 +60,8 @@ config USB_ARCH_HAS_EHCI default y if ARCH_IXP4XX default y if ARCH_W90X900 default y if ARCH_AT91SAM9G45 + default y if ARCH_MXC + default y if ARCH_OMAP34XX default PCI # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface. diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index be3c9b80bc9f..473aa1a20de9 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -44,3 +44,5 @@ obj-y += early/ obj-$(CONFIG_USB_ATM) += atm/ obj-$(CONFIG_USB_SPEEDTOUCH) += atm/ + +obj-$(CONFIG_USB_ULPI) += otg/ diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index e4eca7810bcf..34d4eb98829e 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1461,6 +1461,12 @@ err_out: } #endif /* CONFIG_PM */ + +#define NOKIA_PCSUITE_ACM_INFO(x) \ + USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ + USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ + USB_CDC_ACM_PROTO_VENDOR) + /* * USB driver structure. */ @@ -1519,6 +1525,57 @@ static struct usb_device_id acm_ids[] = { .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ }, + /* Nokia S60 phones expose two ACM channels. The first is + * a modem and is picked up by the standard AT-command + * information below. The second is 'vendor-specific' but + * is treated as a serial device at the S60 end, so we want + * to expose it on Linux too. */ + { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ + { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ + { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ + { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ + { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ + { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ + { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ + { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ + { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ + { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ + { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ + { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ + { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ + { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ + { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ + { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ + { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ + { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ + { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ + { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ + { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ + { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ + { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ + { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ + { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ + { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ + { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ + { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ + { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ + { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ + { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ + { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ + { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ + { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ + { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ + { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ + { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ + { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ + { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ + { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ + { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ + { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ + { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ + + /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ + /* control interfaces with various AT-command sets */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_ACM_PROTO_AT_V25TER) }, @@ -1533,7 +1590,6 @@ static struct usb_device_id acm_ids[] = { { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_ACM_PROTO_AT_CDMA) }, - /* NOTE: COMM/ACM/0xff is likely MSFT RNDIS ... NOT a modem!! */ { } }; diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index b4bd2411c666..7c5f4e32c920 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -347,13 +347,8 @@ usbtmc_abort_bulk_out_check_status: goto exit; usbtmc_abort_bulk_out_clear_halt: - rv = usb_control_msg(data->usb_dev, - usb_sndctrlpipe(data->usb_dev, 0), - USB_REQ_CLEAR_FEATURE, - USB_DIR_OUT | USB_TYPE_STANDARD | - USB_RECIP_ENDPOINT, - USB_ENDPOINT_HALT, data->bulk_out, buffer, - 0, USBTMC_TIMEOUT); + rv = usb_clear_halt(data->usb_dev, + usb_sndbulkpipe(data->usb_dev, data->bulk_out)); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); @@ -562,10 +557,16 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf, n_bytes = roundup(12 + this_part, 4); memset(buffer + 12 + this_part, 0, n_bytes - (12 + this_part)); - retval = usb_bulk_msg(data->usb_dev, - usb_sndbulkpipe(data->usb_dev, - data->bulk_out), - buffer, n_bytes, &actual, USBTMC_TIMEOUT); + do { + retval = usb_bulk_msg(data->usb_dev, + usb_sndbulkpipe(data->usb_dev, + data->bulk_out), + buffer, n_bytes, + &actual, USBTMC_TIMEOUT); + if (retval != 0) + break; + n_bytes -= actual; + } while (n_bytes); data->bTag_last_write = data->bTag; data->bTag++; @@ -702,14 +703,8 @@ usbtmc_clear_check_status: usbtmc_clear_bulk_out_halt: - rv = usb_control_msg(data->usb_dev, - usb_sndctrlpipe(data->usb_dev, 0), - USB_REQ_CLEAR_FEATURE, - USB_DIR_OUT | USB_TYPE_STANDARD | - USB_RECIP_ENDPOINT, - USB_ENDPOINT_HALT, - data->bulk_out, buffer, 0, - USBTMC_TIMEOUT); + rv = usb_clear_halt(data->usb_dev, + usb_sndbulkpipe(data->usb_dev, data->bulk_out)); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); goto exit; @@ -730,13 +725,8 @@ static int usbtmc_ioctl_clear_out_halt(struct usbtmc_device_data *data) if (!buffer) return -ENOMEM; - rv = usb_control_msg(data->usb_dev, - usb_sndctrlpipe(data->usb_dev, 0), - USB_REQ_CLEAR_FEATURE, - USB_DIR_OUT | USB_TYPE_STANDARD | - USB_RECIP_ENDPOINT, - USB_ENDPOINT_HALT, data->bulk_out, - buffer, 0, USBTMC_TIMEOUT); + rv = usb_clear_halt(data->usb_dev, + usb_sndbulkpipe(data->usb_dev, data->bulk_out)); if (rv < 0) { dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n", @@ -759,12 +749,8 @@ static int usbtmc_ioctl_clear_in_halt(struct usbtmc_device_data *data) if (!buffer) return -ENOMEM; - rv = usb_control_msg(data->usb_dev, usb_sndctrlpipe(data->usb_dev, 0), - USB_REQ_CLEAR_FEATURE, - USB_DIR_OUT | USB_TYPE_STANDARD | - USB_RECIP_ENDPOINT, - USB_ENDPOINT_HALT, data->bulk_in, buffer, 0, - USBTMC_TIMEOUT); + rv = usb_clear_halt(data->usb_dev, + usb_rcvbulkpipe(data->usb_dev, data->bulk_in)); if (rv < 0) { dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n", @@ -1109,13 +1095,13 @@ static void usbtmc_disconnect(struct usb_interface *intf) kref_put(&data->kref, usbtmc_delete); } -static int usbtmc_suspend (struct usb_interface *intf, pm_message_t message) +static int usbtmc_suspend(struct usb_interface *intf, pm_message_t message) { /* this driver does not have pending URBs */ return 0; } -static int usbtmc_resume (struct usb_interface *intf) +static int usbtmc_resume(struct usb_interface *intf) { return 0; } diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 4f864472c5c4..60a45f1e3a67 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -83,6 +83,47 @@ static ssize_t store_new_id(struct device_driver *driver, } static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); +/** + * store_remove_id - remove a USB device ID from this driver + * @driver: target device driver + * @buf: buffer for scanning device ID data + * @count: input size + * + * Removes a dynamic usb device ID from this driver. + */ +static ssize_t +store_remove_id(struct device_driver *driver, const char *buf, size_t count) +{ + struct usb_dynid *dynid, *n; + struct usb_driver *usb_driver = to_usb_driver(driver); + u32 idVendor = 0; + u32 idProduct = 0; + int fields = 0; + int retval = 0; + + fields = sscanf(buf, "%x %x", &idVendor, &idProduct); + if (fields < 2) + return -EINVAL; + + spin_lock(&usb_driver->dynids.lock); + list_for_each_entry_safe(dynid, n, &usb_driver->dynids.list, node) { + struct usb_device_id *id = &dynid->id; + if ((id->idVendor == idVendor) && + (id->idProduct == idProduct)) { + list_del(&dynid->node); + kfree(dynid); + retval = 0; + break; + } + } + spin_unlock(&usb_driver->dynids.lock); + + if (retval) + return retval; + return count; +} +static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id); + static int usb_create_newid_file(struct usb_driver *usb_drv) { int error = 0; @@ -107,6 +148,21 @@ static void usb_remove_newid_file(struct usb_driver *usb_drv) &driver_attr_new_id); } +static int +usb_create_removeid_file(struct usb_driver *drv) +{ + int error = 0; + if (drv->probe != NULL) + error = driver_create_file(&drv->drvwrap.driver, + &driver_attr_remove_id); + return error; +} + +static void usb_remove_removeid_file(struct usb_driver *drv) +{ + driver_remove_file(&drv->drvwrap.driver, &driver_attr_remove_id); +} + static void usb_free_dynids(struct usb_driver *usb_drv) { struct usb_dynid *dynid, *n; @@ -128,6 +184,16 @@ static void usb_remove_newid_file(struct usb_driver *usb_drv) { } +static int +usb_create_removeid_file(struct usb_driver *drv) +{ + return 0; +} + +static void usb_remove_removeid_file(struct usb_driver *drv) +{ +} + static inline void usb_free_dynids(struct usb_driver *usb_drv) { } @@ -774,19 +840,34 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner, INIT_LIST_HEAD(&new_driver->dynids.list); retval = driver_register(&new_driver->drvwrap.driver); + if (retval) + goto out; - if (!retval) { - pr_info("%s: registered new interface driver %s\n", + usbfs_update_special(); + + retval = usb_create_newid_file(new_driver); + if (retval) + goto out_newid; + + retval = usb_create_removeid_file(new_driver); + if (retval) + goto out_removeid; + + pr_info("%s: registered new interface driver %s\n", usbcore_name, new_driver->name); - usbfs_update_special(); - usb_create_newid_file(new_driver); - } else { - printk(KERN_ERR "%s: error %d registering interface " - " driver %s\n", - usbcore_name, retval, new_driver->name); - } +out: return retval; + +out_removeid: + usb_remove_newid_file(new_driver); +out_newid: + driver_unregister(&new_driver->drvwrap.driver); + + printk(KERN_ERR "%s: error %d registering interface " + " driver %s\n", + usbcore_name, retval, new_driver->name); + goto out; } EXPORT_SYMBOL_GPL(usb_register_driver); @@ -806,6 +887,7 @@ void usb_deregister(struct usb_driver *driver) pr_info("%s: deregistering interface driver %s\n", usbcore_name, driver->name); + usb_remove_removeid_file(driver); usb_remove_newid_file(driver); usb_free_dynids(driver); driver_unregister(&driver->drvwrap.driver); @@ -948,8 +1030,6 @@ static int usb_resume_device(struct usb_device *udev, pm_message_t msg) done: dev_vdbg(&udev->dev, "%s: status %d\n", __func__, status); - if (status == 0) - udev->autoresume_disabled = 0; return status; } @@ -1280,11 +1360,6 @@ static int usb_resume_both(struct usb_device *udev, pm_message_t msg) /* Propagate the resume up the tree, if necessary */ if (udev->state == USB_STATE_SUSPENDED) { - if ((msg.event & PM_EVENT_AUTO) && - udev->autoresume_disabled) { - status = -EPERM; - goto done; - } if (parent) { status = usb_autoresume_device(parent); if (status == 0) { @@ -1341,7 +1416,6 @@ static int usb_autopm_do_device(struct usb_device *udev, int inc_usage_cnt) int status = 0; usb_pm_lock(udev); - udev->auto_pm = 1; udev->pm_usage_cnt += inc_usage_cnt; WARN_ON(udev->pm_usage_cnt < 0); if (inc_usage_cnt) @@ -1473,7 +1547,6 @@ static int usb_autopm_do_interface(struct usb_interface *intf, if (intf->condition == USB_INTERFACE_UNBOUND) status = -ENODEV; else { - udev->auto_pm = 1; atomic_add(inc_usage_cnt, &intf->pm_usage_cnt); udev->last_busy = jiffies; if (inc_usage_cnt >= 0 && @@ -1640,8 +1713,6 @@ int usb_autopm_get_interface_async(struct usb_interface *intf) if (intf->condition == USB_INTERFACE_UNBOUND) status = -ENODEV; - else if (udev->autoresume_disabled) - status = -EPERM; else { atomic_inc(&intf->pm_usage_cnt); if (atomic_read(&intf->pm_usage_cnt) > 0 && @@ -1654,28 +1725,6 @@ int usb_autopm_get_interface_async(struct usb_interface *intf) } EXPORT_SYMBOL_GPL(usb_autopm_get_interface_async); -/** - * usb_autopm_set_interface - set a USB interface's autosuspend state - * @intf: the usb_interface whose state should be set - * - * This routine sets the autosuspend state of @intf's device according - * to @intf's usage counter, which the caller must have set previously. - * If the counter is <= 0, the device is autosuspended (if it isn't - * already suspended and if nothing else prevents the autosuspend). If - * the counter is > 0, the device is autoresumed (if it isn't already - * awake). - */ -int usb_autopm_set_interface(struct usb_interface *intf) -{ - int status; - - status = usb_autopm_do_interface(intf, 0); - dev_vdbg(&intf->dev, "%s: status %d cnt %d\n", - __func__, status, atomic_read(&intf->pm_usage_cnt)); - return status; -} -EXPORT_SYMBOL_GPL(usb_autopm_set_interface); - #else void usb_autosuspend_work(struct work_struct *work) @@ -1707,7 +1756,6 @@ int usb_external_suspend_device(struct usb_device *udev, pm_message_t msg) do_unbind_rebind(udev, DO_UNBIND); usb_pm_lock(udev); - udev->auto_pm = 0; status = usb_suspend_both(udev, msg); usb_pm_unlock(udev); return status; @@ -1730,7 +1778,6 @@ int usb_external_resume_device(struct usb_device *udev, pm_message_t msg) int status; usb_pm_lock(udev); - udev->auto_pm = 0; status = usb_resume_both(udev, msg); udev->last_busy = jiffies; usb_pm_unlock(udev); diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index 222ee07ea680..bfc6c2eea647 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -99,6 +99,7 @@ static int init_usb_class(void) printk(KERN_ERR "class_create failed for usb devices\n"); kfree(usb_class); usb_class = NULL; + goto exit; } usb_class->class->devnode = usb_devnode; diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 05e6d313961e..bdf87a8414a1 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -139,7 +139,7 @@ int usb_choose_configuration(struct usb_device *udev) if (best) { i = best->desc.bConfigurationValue; - dev_info(&udev->dev, + dev_dbg(&udev->dev, "configuration #%d chosen from %d choice%s\n", i, num_configs, plural(num_configs)); } else { diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 34de475f016e..6dac3b802d41 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -38,6 +38,7 @@ #include <asm/unaligned.h> #include <linux/platform_device.h> #include <linux/workqueue.h> +#include <linux/mutex.h> #include <linux/usb.h> @@ -1275,13 +1276,16 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, if (usb_endpoint_xfer_control(&urb->ep->desc) && !(urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) { - if (hcd->self.uses_dma) + if (hcd->self.uses_dma) { urb->setup_dma = dma_map_single( hcd->self.controller, urb->setup_packet, sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); - else if (hcd->driver->flags & HCD_LOCAL_MEM) + if (dma_mapping_error(hcd->self.controller, + urb->setup_dma)) + return -EAGAIN; + } else if (hcd->driver->flags & HCD_LOCAL_MEM) ret = hcd_alloc_coherent( urb->dev->bus, mem_flags, &urb->setup_dma, @@ -1293,13 +1297,16 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (ret == 0 && urb->transfer_buffer_length != 0 && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) { - if (hcd->self.uses_dma) + if (hcd->self.uses_dma) { urb->transfer_dma = dma_map_single ( hcd->self.controller, urb->transfer_buffer, urb->transfer_buffer_length, dir); - else if (hcd->driver->flags & HCD_LOCAL_MEM) { + if (dma_mapping_error(hcd->self.controller, + urb->transfer_dma)) + return -EAGAIN; + } else if (hcd->driver->flags & HCD_LOCAL_MEM) { ret = hcd_alloc_coherent( urb->dev->bus, mem_flags, &urb->transfer_dma, @@ -1589,19 +1596,32 @@ rescan: } } -/* Check whether a new configuration or alt setting for an interface - * will exceed the bandwidth for the bus (or the host controller resources). - * Only pass in a non-NULL config or interface, not both! - * Passing NULL for both new_config and new_intf means the device will be - * de-configured by issuing a set configuration 0 command. +/** + * Check whether a new bandwidth setting exceeds the bus bandwidth. + * @new_config: new configuration to install + * @cur_alt: the current alternate interface setting + * @new_alt: alternate interface setting that is being installed + * + * To change configurations, pass in the new configuration in new_config, + * and pass NULL for cur_alt and new_alt. + * + * To reset a device's configuration (put the device in the ADDRESSED state), + * pass in NULL for new_config, cur_alt, and new_alt. + * + * To change alternate interface settings, pass in NULL for new_config, + * pass in the current alternate interface setting in cur_alt, + * and pass in the new alternate interface setting in new_alt. + * + * Returns an error if the requested bandwidth change exceeds the + * bus bandwidth or host controller internal resources. */ -int usb_hcd_check_bandwidth(struct usb_device *udev, +int usb_hcd_alloc_bandwidth(struct usb_device *udev, struct usb_host_config *new_config, - struct usb_interface *new_intf) + struct usb_host_interface *cur_alt, + struct usb_host_interface *new_alt) { int num_intfs, i, j; - struct usb_interface_cache *intf_cache; - struct usb_host_interface *alt = 0; + struct usb_host_interface *alt = NULL; int ret = 0; struct usb_hcd *hcd; struct usb_host_endpoint *ep; @@ -1611,7 +1631,7 @@ int usb_hcd_check_bandwidth(struct usb_device *udev, return 0; /* Configuration is being removed - set configuration 0 */ - if (!new_config && !new_intf) { + if (!new_config && !cur_alt) { for (i = 1; i < 16; ++i) { ep = udev->ep_out[i]; if (ep) @@ -1648,19 +1668,12 @@ int usb_hcd_check_bandwidth(struct usb_device *udev, } } for (i = 0; i < num_intfs; ++i) { + /* Set up endpoints for alternate interface setting 0 */ + alt = usb_find_alt_setting(new_config, i, 0); + if (!alt) + /* No alt setting 0? Pick the first setting. */ + alt = &new_config->intf_cache[i]->altsetting[0]; - /* Dig the endpoints for alt setting 0 out of the - * interface cache for this interface - */ - intf_cache = new_config->intf_cache[i]; - for (j = 0; j < intf_cache->num_altsetting; j++) { - if (intf_cache->altsetting[j].desc.bAlternateSetting == 0) - alt = &intf_cache->altsetting[j]; - } - if (!alt) { - printk(KERN_DEBUG "Did not find alt setting 0 for intf %d\n", i); - continue; - } for (j = 0; j < alt->desc.bNumEndpoints; j++) { ret = hcd->driver->add_endpoint(hcd, udev, &alt->endpoint[j]); if (ret < 0) @@ -1668,6 +1681,22 @@ int usb_hcd_check_bandwidth(struct usb_device *udev, } } } + if (cur_alt && new_alt) { + /* Drop all the endpoints in the current alt setting */ + for (i = 0; i < cur_alt->desc.bNumEndpoints; i++) { + ret = hcd->driver->drop_endpoint(hcd, udev, + &cur_alt->endpoint[i]); + if (ret < 0) + goto reset; + } + /* Add all the endpoints in the new alt setting */ + for (i = 0; i < new_alt->desc.bNumEndpoints; i++) { + ret = hcd->driver->add_endpoint(hcd, udev, + &new_alt->endpoint[i]); + if (ret < 0) + goto reset; + } + } ret = hcd->driver->check_bandwidth(hcd, udev); reset: if (ret < 0) @@ -1984,6 +2013,7 @@ struct usb_hcd *usb_create_hcd (const struct hc_driver *driver, #ifdef CONFIG_PM INIT_WORK(&hcd->wakeup_work, hcd_resume_work); #endif + mutex_init(&hcd->bandwidth_mutex); hcd->driver = driver; hcd->product_desc = (driver->product_desc) ? driver->product_desc : diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index 79782a1c43f6..d8b43aee581e 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -111,6 +111,20 @@ struct usb_hcd { u64 rsrc_len; /* memory/io resource length */ unsigned power_budget; /* in mA, 0 = no limit */ + /* bandwidth_mutex should be taken before adding or removing + * any new bus bandwidth constraints: + * 1. Before adding a configuration for a new device. + * 2. Before removing the configuration to put the device into + * the addressed state. + * 3. Before selecting a different configuration. + * 4. Before selecting an alternate interface setting. + * + * bandwidth_mutex should be dropped after a successful control message + * to the device, or resetting the bandwidth after a failed attempt. + */ + struct mutex bandwidth_mutex; + + #define HCD_BUFFER_POOLS 4 struct dma_pool *pool [HCD_BUFFER_POOLS]; @@ -290,9 +304,10 @@ extern void usb_hcd_disable_endpoint(struct usb_device *udev, extern void usb_hcd_reset_endpoint(struct usb_device *udev, struct usb_host_endpoint *ep); extern void usb_hcd_synchronize_unlinks(struct usb_device *udev); -extern int usb_hcd_check_bandwidth(struct usb_device *udev, +extern int usb_hcd_alloc_bandwidth(struct usb_device *udev, struct usb_host_config *new_config, - struct usb_interface *new_intf); + struct usb_host_interface *old_alt, + struct usb_host_interface *new_alt); extern int usb_hcd_get_frame_number(struct usb_device *udev); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 0f857e645058..06af970e1064 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -45,7 +45,6 @@ struct usb_hub { /* buffer for urb ... with extra space in case of babble */ char (*buffer)[8]; - dma_addr_t buffer_dma; /* DMA address for buffer */ union { struct usb_hub_status hub; struct usb_port_status port; @@ -61,6 +60,8 @@ struct usb_hub { status change */ unsigned long busy_bits[1]; /* ports being reset or resumed */ + unsigned long removed_bits[1]; /* ports with a "removed" + device present */ #if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */ #error event_bits[] is too short! #endif @@ -70,6 +71,7 @@ struct usb_hub { unsigned mA_per_port; /* current for each child */ + unsigned init_done:1; unsigned limited_power:1; unsigned quiescing:1; unsigned disconnected:1; @@ -374,12 +376,13 @@ static void kick_khubd(struct usb_hub *hub) { unsigned long flags; - /* Suppress autosuspend until khubd runs */ - atomic_set(&to_usb_interface(hub->intfdev)->pm_usage_cnt, 1); - spin_lock_irqsave(&hub_event_lock, flags); if (!hub->disconnected && list_empty(&hub->event_list)) { list_add_tail(&hub->event_list, &hub_event_list); + + /* Suppress autosuspend until khubd runs */ + usb_autopm_get_interface_no_resume( + to_usb_interface(hub->intfdev)); wake_up(&khubd_wait); } spin_unlock_irqrestore(&hub_event_lock, flags); @@ -636,8 +639,35 @@ static void hub_port_logical_disconnect(struct usb_hub *hub, int port1) kick_khubd(hub); } +/** + * usb_remove_device - disable a device's port on its parent hub + * @udev: device to be disabled and removed + * Context: @udev locked, must be able to sleep. + * + * After @udev's port has been disabled, khubd is notified and it will + * see that the device has been disconnected. When the device is + * physically unplugged and something is plugged in, the events will + * be received and processed normally. + */ +int usb_remove_device(struct usb_device *udev) +{ + struct usb_hub *hub; + struct usb_interface *intf; + + if (!udev->parent) /* Can't remove a root hub */ + return -EINVAL; + hub = hdev_to_hub(udev->parent); + intf = to_usb_interface(hub->intfdev); + + usb_autopm_get_interface(intf); + set_bit(udev->portnum, hub->removed_bits); + hub_port_logical_disconnect(hub, udev->portnum); + usb_autopm_put_interface(intf); + return 0; +} + enum hub_activation_type { - HUB_INIT, HUB_INIT2, HUB_INIT3, + HUB_INIT, HUB_INIT2, HUB_INIT3, /* INITs must come first */ HUB_POST_RESET, HUB_RESUME, HUB_RESET_RESUME, }; @@ -682,8 +712,8 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) msecs_to_jiffies(delay)); /* Suppress autosuspend until init is done */ - atomic_set(&to_usb_interface(hub->intfdev)-> - pm_usage_cnt, 1); + usb_autopm_get_interface_no_resume( + to_usb_interface(hub->intfdev)); return; /* Continues at init2: below */ } else { hub_power_on(hub, true); @@ -731,6 +761,13 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) USB_PORT_FEAT_C_ENABLE); } + /* We can forget about a "removed" device when there's a + * physical disconnect or the connect status changes. + */ + if (!(portstatus & USB_PORT_STAT_CONNECTION) || + (portchange & USB_PORT_STAT_C_CONNECTION)) + clear_bit(port1, hub->removed_bits); + if (!udev || udev->state == USB_STATE_NOTATTACHED) { /* Tell khubd to disconnect the device or * check for a new connection @@ -783,6 +820,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) } init3: hub->quiescing = 0; + hub->init_done = 1; status = usb_submit_urb(hub->urb, GFP_NOIO); if (status < 0) @@ -792,6 +830,10 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) /* Scan all ports that need attention */ kick_khubd(hub); + + /* Allow autosuspend if it was suppressed */ + if (type <= HUB_INIT3) + usb_autopm_put_interface_async(to_usb_interface(hub->intfdev)); } /* Implement the continuations for the delays above */ @@ -819,6 +861,11 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type) int i; cancel_delayed_work_sync(&hub->init_work); + if (!hub->init_done) { + hub->init_done = 1; + usb_autopm_put_interface_no_suspend( + to_usb_interface(hub->intfdev)); + } /* khubd and related activity won't re-trigger */ hub->quiescing = 1; @@ -869,8 +916,7 @@ static int hub_configure(struct usb_hub *hub, int maxp, ret; char *message = "out of memory"; - hub->buffer = usb_buffer_alloc(hdev, sizeof(*hub->buffer), GFP_KERNEL, - &hub->buffer_dma); + hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL); if (!hub->buffer) { ret = -ENOMEM; goto fail; @@ -1111,8 +1157,6 @@ static int hub_configure(struct usb_hub *hub, usb_fill_int_urb(hub->urb, hdev, pipe, *hub->buffer, maxp, hub_irq, hub, endpoint->bInterval); - hub->urb->transfer_dma = hub->buffer_dma; - hub->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* maybe cycle the hub leds */ if (hub->has_indicators && blinkenlights) @@ -1144,7 +1188,10 @@ static void hub_disconnect(struct usb_interface *intf) /* Take the hub off the event list and don't let it be added again */ spin_lock_irq(&hub_event_lock); - list_del_init(&hub->event_list); + if (!list_empty(&hub->event_list)) { + list_del_init(&hub->event_list); + usb_autopm_put_interface_no_suspend(intf); + } hub->disconnected = 1; spin_unlock_irq(&hub_event_lock); @@ -1162,8 +1209,7 @@ static void hub_disconnect(struct usb_interface *intf) kfree(hub->port_owners); kfree(hub->descriptor); kfree(hub->status); - usb_buffer_free(hub->hdev, sizeof(*hub->buffer), hub->buffer, - hub->buffer_dma); + kfree(hub->buffer); kref_put(&hub->kref, hub_release); } @@ -1630,7 +1676,7 @@ static int usb_configure_device_otg(struct usb_device *udev) if (!udev->bus->is_b_host && udev->config && udev->parent == udev->bus->root_hub) { - struct usb_otg_descriptor *desc = 0; + struct usb_otg_descriptor *desc = NULL; struct usb_bus *bus = udev->bus; /* descriptor may appear anywhere in config */ @@ -2123,9 +2169,13 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); - if (status) + if (status) { dev_dbg(&udev->dev, "won't remote wakeup, status %d\n", status); + /* bail if autosuspend is requested */ + if (msg.event & PM_EVENT_AUTO) + return status; + } } /* see 7.1.7.6 */ @@ -2134,7 +2184,8 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) dev_dbg(hub->intfdev, "can't suspend port %d, status %d\n", port1, status); /* paranoia: "should not happen" */ - (void) usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + if (udev->do_remote_wakeup) + (void) usb_control_msg(udev, usb_sndctrlpipe(udev, 0), USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, USB_DEVICE_REMOTE_WAKEUP, 0, NULL, 0, @@ -2965,6 +3016,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, usb_disconnect(&hdev->children[port1-1]); clear_bit(port1, hub->change_bits); + /* We can forget about a "removed" device when there's a physical + * disconnect or the connect status changes. + */ + if (!(portstatus & USB_PORT_STAT_CONNECTION) || + (portchange & USB_PORT_STAT_C_CONNECTION)) + clear_bit(port1, hub->removed_bits); + if (portchange & (USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE)) { status = hub_port_debounce(hub, port1); @@ -2978,8 +3036,11 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, } } - /* Return now if debouncing failed or nothing is connected */ - if (!(portstatus & USB_PORT_STAT_CONNECTION)) { + /* Return now if debouncing failed or nothing is connected or + * the device was "removed". + */ + if (!(portstatus & USB_PORT_STAT_CONNECTION) || + test_bit(port1, hub->removed_bits)) { /* maybe switch power back on (e.g. root hub was reset) */ if ((wHubCharacteristics & HUB_CHAR_LPSM) < 2 @@ -3189,7 +3250,7 @@ static void hub_events(void) * disconnected while waiting for the lock to succeed. */ usb_lock_device(hdev); if (unlikely(hub->disconnected)) - goto loop; + goto loop2; /* If the hub has died, clean up after it */ if (hdev->state == USB_STATE_NOTATTACHED) { @@ -3338,11 +3399,15 @@ static void hub_events(void) } } -loop_autopm: - /* Allow autosuspend if we're not going to run again */ - if (list_empty(&hub->event_list)) - usb_autopm_enable(intf); -loop: + loop_autopm: + /* Balance the usb_autopm_get_interface() above */ + usb_autopm_put_interface_no_suspend(intf); + loop: + /* Balance the usb_autopm_get_interface_no_resume() in + * kick_khubd() and allow autosuspend. + */ + usb_autopm_put_interface(intf); + loop2: usb_unlock_device(hdev); kref_put(&hub->kref, hub_release); @@ -3534,6 +3599,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) { struct usb_device *parent_hdev = udev->parent; struct usb_hub *parent_hub; + struct usb_hcd *hcd = bus_to_hcd(udev->bus); struct usb_device_descriptor descriptor = udev->descriptor; int i, ret = 0; int port1 = udev->portnum; @@ -3577,6 +3643,16 @@ static int usb_reset_and_verify_device(struct usb_device *udev) /* Restore the device's previous configuration */ if (!udev->actconfig) goto done; + + mutex_lock(&hcd->bandwidth_mutex); + ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL); + if (ret < 0) { + dev_warn(&udev->dev, + "Busted HC? Not enough HCD resources for " + "old configuration.\n"); + mutex_unlock(&hcd->bandwidth_mutex); + goto re_enumerate; + } ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), USB_REQ_SET_CONFIGURATION, 0, udev->actconfig->desc.bConfigurationValue, 0, @@ -3585,8 +3661,10 @@ static int usb_reset_and_verify_device(struct usb_device *udev) dev_err(&udev->dev, "can't restore configuration #%d (error=%d)\n", udev->actconfig->desc.bConfigurationValue, ret); + mutex_unlock(&hcd->bandwidth_mutex); goto re_enumerate; } + mutex_unlock(&hcd->bandwidth_mutex); usb_set_device_state(udev, USB_STATE_CONFIGURED); /* Put interfaces back into the same altsettings as before. @@ -3596,7 +3674,8 @@ static int usb_reset_and_verify_device(struct usb_device *udev) * endpoint state. */ for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { - struct usb_interface *intf = udev->actconfig->interface[i]; + struct usb_host_config *config = udev->actconfig; + struct usb_interface *intf = config->interface[i]; struct usb_interface_descriptor *desc; desc = &intf->cur_altsetting->desc; @@ -3605,6 +3684,17 @@ static int usb_reset_and_verify_device(struct usb_device *udev) usb_enable_interface(udev, intf, true); ret = 0; } else { + /* We've just reset the device, so it will think alt + * setting 0 is installed. For usb_set_interface() to + * work properly, we need to set the current alternate + * interface setting to 0 (or the first alt setting, if + * the device doesn't have alt setting 0). + */ + intf->cur_altsetting = + usb_find_alt_setting(config, i, 0); + if (!intf->cur_altsetting) + intf->cur_altsetting = + &config->intf_cache[i]->altsetting[0]; ret = usb_set_interface(udev, desc->bInterfaceNumber, desc->bAlternateSetting); } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index e80f1af438c8..1b994846e8e0 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -393,13 +393,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (io->entries <= 0) return io->entries; - /* If we're running on an xHCI host controller, queue the whole scatter - * gather list with one call to urb_enqueue(). This is only for bulk, - * as that endpoint type does not care how the data gets broken up - * across frames. - */ - if (usb_pipebulk(pipe) && - bus_to_hcd(dev->bus)->driver->flags & HCD_USB3) { + if (dev->bus->sg_tablesize > 0) { io->urbs = kmalloc(sizeof *io->urbs, mem_flags); use_sg = true; } else { @@ -409,7 +403,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (!io->urbs) goto nomem; - urb_flags = URB_NO_INTERRUPT; + urb_flags = 0; if (dma) urb_flags |= URB_NO_TRANSFER_DMA_MAP; if (usb_pipein(pipe)) @@ -441,6 +435,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, io->urbs[0]->num_sgs = io->entries; io->entries = 1; } else { + urb_flags |= URB_NO_INTERRUPT; for_each_sg(sg, sg, io->entries, i) { unsigned len; @@ -1303,6 +1298,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) { struct usb_interface *iface; struct usb_host_interface *alt; + struct usb_hcd *hcd = bus_to_hcd(dev->bus); int ret; int manual = 0; unsigned int epaddr; @@ -1325,6 +1321,18 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) return -EINVAL; } + /* Make sure we have enough bandwidth for this alternate interface. + * Remove the current alt setting and add the new alt setting. + */ + mutex_lock(&hcd->bandwidth_mutex); + ret = usb_hcd_alloc_bandwidth(dev, NULL, iface->cur_altsetting, alt); + if (ret < 0) { + dev_info(&dev->dev, "Not enough bandwidth for altsetting %d\n", + alternate); + mutex_unlock(&hcd->bandwidth_mutex); + return ret; + } + if (dev->quirks & USB_QUIRK_NO_SET_INTF) ret = -EPIPE; else @@ -1340,8 +1348,13 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) "manual set_interface for iface %d, alt %d\n", interface, alternate); manual = 1; - } else if (ret < 0) + } else if (ret < 0) { + /* Re-instate the old alt setting */ + usb_hcd_alloc_bandwidth(dev, NULL, alt, iface->cur_altsetting); + mutex_unlock(&hcd->bandwidth_mutex); return ret; + } + mutex_unlock(&hcd->bandwidth_mutex); /* FIXME drivers shouldn't need to replicate/bugfix the logic here * when they implement async or easily-killable versions of this or @@ -1423,6 +1436,7 @@ int usb_reset_configuration(struct usb_device *dev) { int i, retval; struct usb_host_config *config; + struct usb_hcd *hcd = bus_to_hcd(dev->bus); if (dev->state == USB_STATE_SUSPENDED) return -EHOSTUNREACH; @@ -1438,12 +1452,46 @@ int usb_reset_configuration(struct usb_device *dev) } config = dev->actconfig; + retval = 0; + mutex_lock(&hcd->bandwidth_mutex); + /* Make sure we have enough bandwidth for each alternate setting 0 */ + for (i = 0; i < config->desc.bNumInterfaces; i++) { + struct usb_interface *intf = config->interface[i]; + struct usb_host_interface *alt; + + alt = usb_altnum_to_altsetting(intf, 0); + if (!alt) + alt = &intf->altsetting[0]; + if (alt != intf->cur_altsetting) + retval = usb_hcd_alloc_bandwidth(dev, NULL, + intf->cur_altsetting, alt); + if (retval < 0) + break; + } + /* If not, reinstate the old alternate settings */ + if (retval < 0) { +reset_old_alts: + for (; i >= 0; i--) { + struct usb_interface *intf = config->interface[i]; + struct usb_host_interface *alt; + + alt = usb_altnum_to_altsetting(intf, 0); + if (!alt) + alt = &intf->altsetting[0]; + if (alt != intf->cur_altsetting) + usb_hcd_alloc_bandwidth(dev, NULL, + alt, intf->cur_altsetting); + } + mutex_unlock(&hcd->bandwidth_mutex); + return retval; + } retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION, 0, config->desc.bConfigurationValue, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); if (retval < 0) - return retval; + goto reset_old_alts; + mutex_unlock(&hcd->bandwidth_mutex); /* re-init hc/hcd interface/endpoint state */ for (i = 0; i < config->desc.bNumInterfaces; i++) { @@ -1585,7 +1633,7 @@ static struct usb_interface_assoc_descriptor *find_iad(struct usb_device *dev, * * See usb_queue_reset_device() for more details */ -void __usb_queue_reset_device(struct work_struct *ws) +static void __usb_queue_reset_device(struct work_struct *ws) { int rc; struct usb_interface *iface = @@ -1652,6 +1700,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration) int i, ret; struct usb_host_config *cp = NULL; struct usb_interface **new_interfaces = NULL; + struct usb_hcd *hcd = bus_to_hcd(dev->bus); int n, nintf; if (dev->authorized == 0 || configuration == -1) @@ -1721,12 +1770,11 @@ free_interfaces: * host controller will not allow submissions to dropped endpoints. If * this call fails, the device state is unchanged. */ - if (cp) - ret = usb_hcd_check_bandwidth(dev, cp, NULL); - else - ret = usb_hcd_check_bandwidth(dev, NULL, NULL); + mutex_lock(&hcd->bandwidth_mutex); + ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL); if (ret < 0) { usb_autosuspend_device(dev); + mutex_unlock(&hcd->bandwidth_mutex); goto free_interfaces; } @@ -1752,10 +1800,12 @@ free_interfaces: dev->actconfig = cp; if (!cp) { usb_set_device_state(dev, USB_STATE_ADDRESS); - usb_hcd_check_bandwidth(dev, NULL, NULL); + usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL); usb_autosuspend_device(dev); + mutex_unlock(&hcd->bandwidth_mutex); goto free_interfaces; } + mutex_unlock(&hcd->bandwidth_mutex); usb_set_device_state(dev, USB_STATE_CONFIGURED); /* Initialize the new interface structures and the diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 7ec3041ae79e..15477008b631 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -139,6 +139,16 @@ show_devnum(struct device *dev, struct device_attribute *attr, char *buf) static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL); static ssize_t +show_devpath(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_device *udev; + + udev = to_usb_device(dev); + return sprintf(buf, "%s\n", udev->devpath); +} +static DEVICE_ATTR(devpath, S_IRUGO, show_devpath, NULL); + +static ssize_t show_version(struct device *dev, struct device_attribute *attr, char *buf) { struct usb_device *udev; @@ -317,7 +327,6 @@ static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR, static const char on_string[] = "on"; static const char auto_string[] = "auto"; -static const char suspend_string[] = "suspend"; static ssize_t show_level(struct device *dev, struct device_attribute *attr, char *buf) @@ -325,13 +334,8 @@ show_level(struct device *dev, struct device_attribute *attr, char *buf) struct usb_device *udev = to_usb_device(dev); const char *p = auto_string; - if (udev->state == USB_STATE_SUSPENDED) { - if (udev->autoresume_disabled) - p = suspend_string; - } else { - if (udev->autosuspend_disabled) - p = on_string; - } + if (udev->state != USB_STATE_SUSPENDED && udev->autosuspend_disabled) + p = on_string; return sprintf(buf, "%s\n", p); } @@ -343,7 +347,7 @@ set_level(struct device *dev, struct device_attribute *attr, int len = count; char *cp; int rc = 0; - int old_autosuspend_disabled, old_autoresume_disabled; + int old_autosuspend_disabled; cp = memchr(buf, '\n', count); if (cp) @@ -351,7 +355,6 @@ set_level(struct device *dev, struct device_attribute *attr, usb_lock_device(udev); old_autosuspend_disabled = udev->autosuspend_disabled; - old_autoresume_disabled = udev->autoresume_disabled; /* Setting the flags without calling usb_pm_lock is a subject to * races, but who cares... @@ -359,28 +362,18 @@ set_level(struct device *dev, struct device_attribute *attr, if (len == sizeof on_string - 1 && strncmp(buf, on_string, len) == 0) { udev->autosuspend_disabled = 1; - udev->autoresume_disabled = 0; rc = usb_external_resume_device(udev, PMSG_USER_RESUME); } else if (len == sizeof auto_string - 1 && strncmp(buf, auto_string, len) == 0) { udev->autosuspend_disabled = 0; - udev->autoresume_disabled = 0; rc = usb_external_resume_device(udev, PMSG_USER_RESUME); - } else if (len == sizeof suspend_string - 1 && - strncmp(buf, suspend_string, len) == 0) { - udev->autosuspend_disabled = 0; - udev->autoresume_disabled = 1; - rc = usb_external_suspend_device(udev, PMSG_USER_SUSPEND); - } else rc = -EINVAL; - if (rc) { + if (rc) udev->autosuspend_disabled = old_autosuspend_disabled; - udev->autoresume_disabled = old_autoresume_disabled; - } usb_unlock_device(udev); return (rc < 0 ? rc : count); } @@ -508,6 +501,28 @@ static ssize_t usb_dev_authorized_store(struct device *dev, static DEVICE_ATTR(authorized, 0644, usb_dev_authorized_show, usb_dev_authorized_store); +/* "Safely remove a device" */ +static ssize_t usb_remove_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct usb_device *udev = to_usb_device(dev); + int rc = 0; + + usb_lock_device(udev); + if (udev->state != USB_STATE_NOTATTACHED) { + + /* To avoid races, first unconfigure and then remove */ + usb_set_configuration(udev, -1); + rc = usb_remove_device(udev); + } + if (rc == 0) + rc = count; + usb_unlock_device(udev); + return rc; +} +static DEVICE_ATTR(remove, 0200, NULL, usb_remove_store); + static struct attribute *dev_attrs[] = { /* current configuration's attributes */ @@ -516,8 +531,8 @@ static struct attribute *dev_attrs[] = { &dev_attr_bConfigurationValue.attr, &dev_attr_bmAttributes.attr, &dev_attr_bMaxPower.attr, - &dev_attr_urbnum.attr, /* device attributes */ + &dev_attr_urbnum.attr, &dev_attr_idVendor.attr, &dev_attr_idProduct.attr, &dev_attr_bcdDevice.attr, @@ -529,10 +544,12 @@ static struct attribute *dev_attrs[] = { &dev_attr_speed.attr, &dev_attr_busnum.attr, &dev_attr_devnum.attr, + &dev_attr_devpath.attr, &dev_attr_version.attr, &dev_attr_maxchild.attr, &dev_attr_quirks.attr, &dev_attr_authorized.attr, + &dev_attr_remove.attr, NULL, }; static struct attribute_group dev_attr_grp = { diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 0885d4abdc62..e7cae1334693 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -429,8 +429,16 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) case USB_ENDPOINT_XFER_ISOC: case USB_ENDPOINT_XFER_INT: /* too small? */ - if (urb->interval <= 0) - return -EINVAL; + switch (dev->speed) { + case USB_SPEED_VARIABLE: + if (urb->interval < 6) + return -EINVAL; + break; + default: + if (urb->interval <= 0) + return -EINVAL; + break; + } /* too big? */ switch (dev->speed) { case USB_SPEED_SUPER: /* units are 125us */ @@ -438,6 +446,10 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) if (urb->interval > (1 << 15)) return -EINVAL; max = 1 << 15; + case USB_SPEED_VARIABLE: + if (urb->interval > 16) + return -EINVAL; + break; case USB_SPEED_HIGH: /* units are microframes */ /* NOTE usb handles 2^15 */ if (urb->interval > (1024 * 8)) @@ -461,8 +473,10 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) default: return -EINVAL; } - /* Round down to a power of 2, no more than max */ - urb->interval = min(max, 1 << ilog2(urb->interval)); + if (dev->speed != USB_SPEED_VARIABLE) { + /* Round down to a power of 2, no more than max */ + urb->interval = min(max, 1 << ilog2(urb->interval)); + } } return usb_hcd_submit_urb(urb, mem_flags); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index b1b85abb9a2d..4e2c6df8d3cc 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -64,6 +64,43 @@ MODULE_PARM_DESC(autosuspend, "default autosuspend delay"); /** + * usb_find_alt_setting() - Given a configuration, find the alternate setting + * for the given interface. + * @config - the configuration to search (not necessarily the current config). + * @iface_num - interface number to search in + * @alt_num - alternate interface setting number to search for. + * + * Search the configuration's interface cache for the given alt setting. + */ +struct usb_host_interface *usb_find_alt_setting( + struct usb_host_config *config, + unsigned int iface_num, + unsigned int alt_num) +{ + struct usb_interface_cache *intf_cache = NULL; + int i; + + for (i = 0; i < config->desc.bNumInterfaces; i++) { + if (config->intf_cache[i]->altsetting[0].desc.bInterfaceNumber + == iface_num) { + intf_cache = config->intf_cache[i]; + break; + } + } + if (!intf_cache) + return NULL; + for (i = 0; i < intf_cache->num_altsetting; i++) + if (intf_cache->altsetting[i].desc.bAlternateSetting == alt_num) + return &intf_cache->altsetting[i]; + + printk(KERN_DEBUG "Did not find alt setting %u for intf %u, " + "config %u\n", alt_num, iface_num, + config->desc.bConfigurationValue); + return NULL; +} +EXPORT_SYMBOL_GPL(usb_find_alt_setting); + +/** * usb_ifnum_to_if - get the interface object with a given interface number * @dev: the device whose current configuration is considered * @ifnum: the desired interface @@ -130,24 +167,17 @@ struct usb_host_interface *usb_altnum_to_altsetting( } EXPORT_SYMBOL_GPL(usb_altnum_to_altsetting); -struct find_interface_arg { - int minor; - struct usb_interface *interface; -}; - static int __find_interface(struct device *dev, void *data) { - struct find_interface_arg *arg = data; + int *minor = data; struct usb_interface *intf; if (!is_usb_interface(dev)) return 0; intf = to_usb_interface(dev); - if (intf->minor != -1 && intf->minor == arg->minor) { - arg->interface = intf; + if (intf->minor != -1 && intf->minor == *minor) return 1; - } return 0; } @@ -156,21 +186,20 @@ static int __find_interface(struct device *dev, void *data) * @drv: the driver whose current configuration is considered * @minor: the minor number of the desired device * - * This walks the driver device list and returns a pointer to the interface + * This walks the bus device list and returns a pointer to the interface * with the matching minor. Note, this only works for devices that share the * USB major number. */ struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor) { - struct find_interface_arg argb; - int retval; + struct device *dev; + + dev = bus_find_device(&usb_bus_type, NULL, &minor, __find_interface); + + /* Drop reference count from bus_find_device */ + put_device(dev); - argb.minor = minor; - argb.interface = NULL; - /* eat the error, it will be in argb.interface */ - retval = driver_for_each_device(&drv->drvwrap.driver, NULL, &argb, - __find_interface); - return argb.interface; + return dev ? to_usb_interface(dev) : NULL; } EXPORT_SYMBOL_GPL(usb_find_interface); @@ -1038,7 +1067,7 @@ static struct notifier_block usb_bus_nb = { struct dentry *usb_debug_root; EXPORT_SYMBOL_GPL(usb_debug_root); -struct dentry *usb_debug_devices; +static struct dentry *usb_debug_devices; static int usb_debugfs_init(void) { diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 9a8b15e6377a..4c36c7f512a0 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -24,6 +24,7 @@ extern void usb_disable_device(struct usb_device *dev, int skip_ep0); extern int usb_deauthorize_device(struct usb_device *); extern int usb_authorize_device(struct usb_device *); extern void usb_detect_quirks(struct usb_device *udev); +extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, unsigned int size); diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index a18e3c5dd82e..ee411206c699 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -732,6 +732,24 @@ config USB_FILE_STORAGE_TEST behavior of USB Mass Storage hosts. Not needed for normal operation. +config USB_MASS_STORAGE + tristate "Mass Storage Gadget" + depends on BLOCK + help + The Mass Storage Gadget acts as a USB Mass Storage disk drive. + As its storage repository it can use a regular file or a block + device (in much the same way as the "loop" device driver), + specified as a module parameter or sysfs option. + + This is heavily based on File-backed Storage Gadget and in most + cases you will want to use FSG instead. This gadget is mostly + here to test the functionality of the Mass Storage Function + which may be used with composite framework. + + Say "y" to link the driver statically, or "m" to build + a dynamically linked module called "g_file_storage". If unsure, + consider File-backed Storage Gadget. + config USB_G_SERIAL tristate "Serial Gadget (with CDC ACM and CDC OBEX support)" help @@ -794,6 +812,48 @@ config USB_CDC_COMPOSITE Say "y" to link the driver statically, or "m" to build a dynamically linked module. +config USB_G_MULTI + tristate "Multifunction Composite Gadget (EXPERIMENTAL)" + depends on BLOCK && NET + help + The Multifunction Composite Gadget provides Ethernet (RNDIS + and/or CDC Ethernet), mass storage and ACM serial link + interfaces. + + You will be asked to choose which of the two configurations is + to be available in the gadget. At least one configuration must + be chosen to make the gadget usable. Selecting more than one + configuration will prevent Windows from automatically detecting + the gadget as a composite gadget, so an INF file will be needed to + use the gadget. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "g_multi". + +config USB_G_MULTI_RNDIS + bool "RNDIS + CDC Serial + Storage configuration" + depends on USB_G_MULTI + default y + help + This option enables a configuration with RNDIS, CDC Serial and + Mass Storage functions available in the Multifunction Composite + Gadget. This is the configuration dedicated for Windows since RNDIS + is Microsoft's protocol. + + If unsure, say "y". + +config USB_G_MULTI_CDC + bool "CDC Ethernet + CDC Serial + Storage configuration" + depends on USB_G_MULTI + default n + help + This option enables a configuration with CDC Ethernet (ECM), CDC + Serial and Mass Storage functions available in the Multifunction + Composite Gadget. + + If unsure, say "y". + + # put drivers that need isochronous transfer support (for audio # or video class gadget drivers), or specific hardware, here. diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 9d7b87c52e9f..2e2c047262b7 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -39,16 +39,20 @@ g_serial-objs := serial.o g_midi-objs := gmidi.o gadgetfs-objs := inode.o g_file_storage-objs := file_storage.o +g_mass_storage-objs := mass_storage.o g_printer-objs := printer.o g_cdc-objs := cdc2.o +g_multi-objs := multi.o obj-$(CONFIG_USB_ZERO) += g_zero.o obj-$(CONFIG_USB_AUDIO) += g_audio.o obj-$(CONFIG_USB_ETH) += g_ether.o obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o +obj-$(CONFIG_USB_MASS_STORAGE) += g_mass_storage.o obj-$(CONFIG_USB_G_SERIAL) += g_serial.o obj-$(CONFIG_USB_G_PRINTER) += g_printer.o obj-$(CONFIG_USB_MIDI_GADGET) += g_midi.o obj-$(CONFIG_USB_CDC_COMPOSITE) += g_cdc.o +obj-$(CONFIG_USB_G_MULTI) += g_multi.o diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 66450a1abc22..043e04db2a05 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -892,7 +892,7 @@ static void pullup(struct at91_udc *udc, int is_on) txvc |= AT91_UDP_TXVC_PUON; at91_udp_write(udc, AT91_UDP_TXVC, txvc); - } else if (cpu_is_at91sam9261()) { + } else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) { u32 usbpucr; usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR); @@ -910,7 +910,7 @@ static void pullup(struct at91_udc *udc, int is_on) txvc &= ~AT91_UDP_TXVC_PUON; at91_udp_write(udc, AT91_UDP_TXVC, txvc); - } else if (cpu_is_at91sam9261()) { + } else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) { u32 usbpucr; usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR); @@ -1692,7 +1692,7 @@ static int __init at91udc_probe(struct platform_device *pdev) udc->ep[3].maxpacket = 64; udc->ep[4].maxpacket = 512; udc->ep[5].maxpacket = 512; - } else if (cpu_is_at91sam9261()) { + } else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) { udc->ep[3].maxpacket = 64; } else if (cpu_is_at91sam9263()) { udc->ep[0].maxpacket = 64; diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c index a3a0f4a27ef0..58f220323847 100644 --- a/drivers/usb/gadget/audio.c +++ b/drivers/usb/gadget/audio.c @@ -89,120 +89,6 @@ static const struct usb_descriptor_header *otg_desc[] = { /*-------------------------------------------------------------------------*/ -/** - * Handle USB audio endpoint set/get command in setup class request - */ - -static int audio_set_endpoint_req(struct usb_configuration *c, - const struct usb_ctrlrequest *ctrl) -{ - struct usb_composite_dev *cdev = c->cdev; - int value = -EOPNOTSUPP; - u16 ep = le16_to_cpu(ctrl->wIndex); - u16 len = le16_to_cpu(ctrl->wLength); - u16 w_value = le16_to_cpu(ctrl->wValue); - - DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", - ctrl->bRequest, w_value, len, ep); - - switch (ctrl->bRequest) { - case UAC_SET_CUR: - value = 0; - break; - - case UAC_SET_MIN: - break; - - case UAC_SET_MAX: - break; - - case UAC_SET_RES: - break; - - case UAC_SET_MEM: - break; - - default: - break; - } - - return value; -} - -static int audio_get_endpoint_req(struct usb_configuration *c, - const struct usb_ctrlrequest *ctrl) -{ - struct usb_composite_dev *cdev = c->cdev; - int value = -EOPNOTSUPP; - u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); - u16 len = le16_to_cpu(ctrl->wLength); - u16 w_value = le16_to_cpu(ctrl->wValue); - - DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", - ctrl->bRequest, w_value, len, ep); - - switch (ctrl->bRequest) { - case UAC_GET_CUR: - case UAC_GET_MIN: - case UAC_GET_MAX: - case UAC_GET_RES: - value = 3; - break; - case UAC_GET_MEM: - break; - default: - break; - } - - return value; -} - -static int -audio_setup(struct usb_configuration *c, const struct usb_ctrlrequest *ctrl) -{ - struct usb_composite_dev *cdev = c->cdev; - struct usb_request *req = cdev->req; - int value = -EOPNOTSUPP; - u16 w_index = le16_to_cpu(ctrl->wIndex); - u16 w_value = le16_to_cpu(ctrl->wValue); - u16 w_length = le16_to_cpu(ctrl->wLength); - - /* composite driver infrastructure handles everything except - * Audio class messages; interface activation uses set_alt(). - */ - switch (ctrl->bRequestType) { - case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: - value = audio_set_endpoint_req(c, ctrl); - break; - - case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: - value = audio_get_endpoint_req(c, ctrl); - break; - - default: - ERROR(cdev, "Invalid control req%02x.%02x v%04x i%04x l%d\n", - ctrl->bRequestType, ctrl->bRequest, - w_value, w_index, w_length); - } - - /* respond with data transfer or status phase? */ - if (value >= 0) { - DBG(cdev, "Audio req%02x.%02x v%04x i%04x l%d\n", - ctrl->bRequestType, ctrl->bRequest, - w_value, w_index, w_length); - req->zero = 0; - req->length = value; - value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); - if (value < 0) - ERROR(cdev, "Audio response on err %d\n", value); - } - - /* device either stalls (value < 0) or reports success */ - return value; -} - -/*-------------------------------------------------------------------------*/ - static int __init audio_do_config(struct usb_configuration *c) { /* FIXME alloc iConfiguration string, set it in c->strings */ @@ -220,7 +106,6 @@ static int __init audio_do_config(struct usb_configuration *c) static struct usb_configuration audio_config_driver = { .label = DRIVER_DESC, .bind = audio_do_config, - .setup = audio_setup, .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_SELFPOWER, diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index d05397ec8a18..09289bb1e20f 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -373,6 +373,8 @@ static void reset_config(struct usb_composite_dev *cdev) list_for_each_entry(f, &cdev->config->functions, list) { if (f->disable) f->disable(f); + + bitmap_zero(f->endpoints, 32); } cdev->config = NULL; } @@ -418,10 +420,35 @@ static int set_config(struct usb_composite_dev *cdev, /* Initialize all interfaces by setting them to altsetting zero. */ for (tmp = 0; tmp < MAX_CONFIG_INTERFACES; tmp++) { struct usb_function *f = c->interface[tmp]; + struct usb_descriptor_header **descriptors; if (!f) break; + /* + * Record which endpoints are used by the function. This is used + * to dispatch control requests targeted at that endpoint to the + * function's setup callback instead of the current + * configuration's setup callback. + */ + if (gadget->speed == USB_SPEED_HIGH) + descriptors = f->hs_descriptors; + else + descriptors = f->descriptors; + + for (; *descriptors; ++descriptors) { + struct usb_endpoint_descriptor *ep; + int addr; + + if ((*descriptors)->bDescriptorType != USB_DT_ENDPOINT) + continue; + + ep = (struct usb_endpoint_descriptor *)*descriptors; + addr = ((ep->bEndpointAddress & 0x80) >> 3) + | (ep->bEndpointAddress & 0x0f); + set_bit(addr, f->endpoints); + } + result = f->set_alt(f, tmp, 0); if (result < 0) { DBG(cdev, "interface %d (%s/%p) alt 0 --> %d\n", @@ -688,6 +715,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) u16 w_value = le16_to_cpu(ctrl->wValue); u16 w_length = le16_to_cpu(ctrl->wLength); struct usb_function *f = NULL; + u8 endp; /* partial re-init of the response message; the function or the * gadget might need to intercept e.g. a control-OUT completion @@ -800,23 +828,33 @@ unknown: ctrl->bRequestType, ctrl->bRequest, w_value, w_index, w_length); - /* functions always handle their interfaces ... punt other - * recipients (endpoint, other, WUSB, ...) to the current + /* functions always handle their interfaces and endpoints... + * punt other recipients (other, WUSB, ...) to the current * configuration code. * * REVISIT it could make sense to let the composite device * take such requests too, if that's ever needed: to work * in config 0, etc. */ - if ((ctrl->bRequestType & USB_RECIP_MASK) - == USB_RECIP_INTERFACE) { + switch (ctrl->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_INTERFACE: f = cdev->config->interface[intf]; - if (f && f->setup) - value = f->setup(f, ctrl); - else + break; + + case USB_RECIP_ENDPOINT: + endp = ((w_index & 0x80) >> 3) | (w_index & 0x0f); + list_for_each_entry(f, &cdev->config->functions, list) { + if (test_bit(endp, f->endpoints)) + break; + } + if (&f->list == &cdev->config->functions) f = NULL; + break; } - if (value < 0 && !f) { + + if (f && f->setup) + value = f->setup(f, ctrl); + else { struct usb_configuration *c; c = cdev->config; @@ -1054,7 +1092,8 @@ static struct usb_gadget_driver composite_driver = { .speed = USB_SPEED_HIGH, .bind = composite_bind, - .unbind = __exit_p(composite_unbind), + /* .unbind = __exit_p(composite_unbind), */ + .unbind = composite_unbind, .setup = composite_setup, .disconnect = composite_disconnect, @@ -1103,7 +1142,7 @@ int __init usb_composite_register(struct usb_composite_driver *driver) * This function is used to unregister drivers using the composite * driver framework. */ -void __exit usb_composite_unregister(struct usb_composite_driver *driver) +void /* __exit */ usb_composite_unregister(struct usb_composite_driver *driver) { if (composite != driver) return; diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 167cb2a8ecef..141372b6e7a1 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -25,6 +25,14 @@ #include <linux/kernel.h> #include <linux/utsname.h> + +#if defined USB_ETH_RNDIS +# undef USB_ETH_RNDIS +#endif +#ifdef CONFIG_USB_ETH_RNDIS +# define USB_ETH_RNDIS y +#endif + #include "u_ether.h" @@ -66,7 +74,7 @@ #define DRIVER_DESC "Ethernet Gadget" #define DRIVER_VERSION "Memorial Day 2008" -#ifdef CONFIG_USB_ETH_RNDIS +#ifdef USB_ETH_RNDIS #define PREFIX "RNDIS/" #else #define PREFIX "" @@ -87,7 +95,7 @@ static inline bool has_rndis(void) { -#ifdef CONFIG_USB_ETH_RNDIS +#ifdef USB_ETH_RNDIS return true; #else return false; @@ -110,7 +118,7 @@ static inline bool has_rndis(void) #include "f_ecm.c" #include "f_subset.c" -#ifdef CONFIG_USB_ETH_RNDIS +#ifdef USB_ETH_RNDIS #include "f_rndis.c" #include "rndis.c" #endif @@ -251,7 +259,7 @@ static struct usb_configuration rndis_config_driver = { /*-------------------------------------------------------------------------*/ -#ifdef CONFIG_USB_ETH_EEM +#ifdef USB_ETH_EEM static int use_eem = 1; #else static int use_eem; diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 4e3657808b0f..d10353d46b86 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -4,6 +4,8 @@ * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com) * Copyright (C) 2008 by David Brownell * Copyright (C) 2008 by Nokia Corporation + * Copyright (C) 2009 by Samsung Electronics + * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) * * This software is distributed under the terms of the GNU General * Public License ("GPL") as published by the Free Software Foundation, @@ -99,6 +101,20 @@ static inline struct f_acm *port_to_acm(struct gserial *p) /* interface and class descriptors: */ +static struct usb_interface_assoc_descriptor +acm_iad_descriptor = { + .bLength = sizeof acm_iad_descriptor, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + + /* .bFirstInterface = DYNAMIC, */ + .bInterfaceCount = 2, // control + data + .bFunctionClass = USB_CLASS_COMM, + .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, + .bFunctionProtocol = USB_CDC_PROTO_NONE, + /* .iFunction = DYNAMIC */ +}; + + static struct usb_interface_descriptor acm_control_interface_desc __initdata = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, @@ -178,6 +194,7 @@ static struct usb_endpoint_descriptor acm_fs_out_desc __initdata = { }; static struct usb_descriptor_header *acm_fs_function[] __initdata = { + (struct usb_descriptor_header *) &acm_iad_descriptor, (struct usb_descriptor_header *) &acm_control_interface_desc, (struct usb_descriptor_header *) &acm_header_desc, (struct usb_descriptor_header *) &acm_call_mgmt_descriptor, @@ -216,6 +233,7 @@ static struct usb_endpoint_descriptor acm_hs_out_desc __initdata = { }; static struct usb_descriptor_header *acm_hs_function[] __initdata = { + (struct usb_descriptor_header *) &acm_iad_descriptor, (struct usb_descriptor_header *) &acm_control_interface_desc, (struct usb_descriptor_header *) &acm_header_desc, (struct usb_descriptor_header *) &acm_call_mgmt_descriptor, @@ -232,11 +250,13 @@ static struct usb_descriptor_header *acm_hs_function[] __initdata = { #define ACM_CTRL_IDX 0 #define ACM_DATA_IDX 1 +#define ACM_IAD_IDX 2 /* static strings, in UTF-8 */ static struct usb_string acm_string_defs[] = { [ACM_CTRL_IDX].s = "CDC Abstract Control Model (ACM)", [ACM_DATA_IDX].s = "CDC ACM Data", + [ACM_IAD_IDX ].s = "CDC Serial", { /* ZEROES END LIST */ }, }; @@ -563,6 +583,7 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) if (status < 0) goto fail; acm->ctrl_id = status; + acm_iad_descriptor.bFirstInterface = status; acm_control_interface_desc.bInterfaceNumber = status; acm_union_desc .bMasterInterface0 = status; @@ -732,6 +753,13 @@ int __init acm_bind_config(struct usb_configuration *c, u8 port_num) acm_string_defs[ACM_DATA_IDX].id = status; acm_data_interface_desc.iInterface = status; + + status = usb_string_id(c->cdev); + if (status < 0) + return status; + acm_string_defs[ACM_IAD_IDX].id = status; + + acm_iad_descriptor.iFunction = status; } /* allocate and initialize one new instance */ diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c index 98e9bb977291..c43c89ffa2c8 100644 --- a/drivers/usb/gadget/f_audio.c +++ b/drivers/usb/gadget/f_audio.c @@ -445,6 +445,70 @@ static int audio_get_intf_req(struct usb_function *f, return len; } +static int audio_set_endpoint_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + int value = -EOPNOTSUPP; + u16 ep = le16_to_cpu(ctrl->wIndex); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case UAC_SET_CUR: + value = 0; + break; + + case UAC_SET_MIN: + break; + + case UAC_SET_MAX: + break; + + case UAC_SET_RES: + break; + + case UAC_SET_MEM: + break; + + default: + break; + } + + return value; +} + +static int audio_get_endpoint_req(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = f->config->cdev; + int value = -EOPNOTSUPP; + u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u16 len = le16_to_cpu(ctrl->wLength); + u16 w_value = le16_to_cpu(ctrl->wValue); + + DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n", + ctrl->bRequest, w_value, len, ep); + + switch (ctrl->bRequest) { + case UAC_GET_CUR: + case UAC_GET_MIN: + case UAC_GET_MAX: + case UAC_GET_RES: + value = 3; + break; + case UAC_GET_MEM: + break; + default: + break; + } + + return value; +} + static int f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { @@ -455,8 +519,8 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) u16 w_value = le16_to_cpu(ctrl->wValue); u16 w_length = le16_to_cpu(ctrl->wLength); - /* composite driver infrastructure handles everything except - * Audio class messages; interface activation uses set_alt(). + /* composite driver infrastructure handles everything; interface + * activation uses set_alt(). */ switch (ctrl->bRequestType) { case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE: @@ -467,6 +531,14 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) value = audio_get_intf_req(f, ctrl); break; + case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: + value = audio_set_endpoint_req(f, ctrl); + break; + + case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT: + value = audio_get_endpoint_req(f, ctrl); + break; + default: ERROR(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", ctrl->bRequestType, ctrl->bRequest, diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c new file mode 100644 index 000000000000..a37640eba434 --- /dev/null +++ b/drivers/usb/gadget/f_mass_storage.c @@ -0,0 +1,3091 @@ +/* + * f_mass_storage.c -- Mass Storage USB Composite Function + * + * Copyright (C) 2003-2008 Alan Stern + * Copyright (C) 2009 Samsung Electronics + * Author: Michal Nazarewicz <m.nazarewicz@samsung.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the above-listed copyright holders may not be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + + +/* + * The Mass Storage Function acts as a USB Mass Storage device, + * appearing to the host as a disk drive or as a CD-ROM drive. In + * addition to providing an example of a genuinely useful composite + * function for a USB device, it also illustrates a technique of + * double-buffering for increased throughput. + * + * Function supports multiple logical units (LUNs). Backing storage + * for each LUN is provided by a regular file or a block device. + * Access for each LUN can be limited to read-only. Moreover, the + * function can indicate that LUN is removable and/or CD-ROM. (The + * later implies read-only access.) + * + * MSF is configured by specifying a fsg_config structure. It has the + * following fields: + * + * nluns Number of LUNs function have (anywhere from 1 + * to FSG_MAX_LUNS which is 8). + * luns An array of LUN configuration values. This + * should be filled for each LUN that + * function will include (ie. for "nluns" + * LUNs). Each element of the array has + * the following fields: + * ->filename The path to the backing file for the LUN. + * Required if LUN is not marked as + * removable. + * ->ro Flag specifying access to the LUN shall be + * read-only. This is implied if CD-ROM + * emulation is enabled as well as when + * it was impossible to open "filename" + * in R/W mode. + * ->removable Flag specifying that LUN shall be indicated as + * being removable. + * ->cdrom Flag specifying that LUN shall be reported as + * being a CD-ROM. + * + * lun_name_format A printf-like format for names of the LUN + * devices. This determines how the + * directory in sysfs will be named. + * Unless you are using several MSFs in + * a single gadget (as opposed to single + * MSF in many configurations) you may + * leave it as NULL (in which case + * "lun%d" will be used). In the format + * you can use "%d" to index LUNs for + * MSF's with more than one LUN. (Beware + * that there is only one integer given + * as an argument for the format and + * specifying invalid format may cause + * unspecified behaviour.) + * thread_name Name of the kernel thread process used by the + * MSF. You can safely set it to NULL + * (in which case default "file-storage" + * will be used). + * + * vendor_name + * product_name + * release Information used as a reply to INQUIRY + * request. To use default set to NULL, + * NULL, 0xffff respectively. The first + * field should be 8 and the second 16 + * characters or less. + * + * can_stall Set to permit function to halt bulk endpoints. + * Disabled on some USB devices known not + * to work correctly. You should set it + * to true. + * + * If "removable" is not set for a LUN then a backing file must be + * specified. If it is set, then NULL filename means the LUN's medium + * is not loaded (an empty string as "filename" in the fsg_config + * structure causes error). The CD-ROM emulation includes a single + * data track and no audio tracks; hence there need be only one + * backing file per LUN. Note also that the CD-ROM block length is + * set to 512 rather than the more common value 2048. + * + * + * MSF includes support for module parameters. If gadget using it + * decides to use it, the following module parameters will be + * available: + * + * file=filename[,filename...] + * Names of the files or block devices used for + * backing storage. + * ro=b[,b...] Default false, boolean for read-only access. + * removable=b[,b...] + * Default true, boolean for removable media. + * cdrom=b[,b...] Default false, boolean for whether to emulate + * a CD-ROM drive. + * luns=N Default N = number of filenames, number of + * LUNs to support. + * stall Default determined according to the type of + * USB device controller (usually true), + * boolean to permit the driver to halt + * bulk endpoints. + * + * The module parameters may be prefixed with some string. You need + * to consult gadget's documentation or source to verify whether it is + * using those module parameters and if it does what are the prefixes + * (look for FSG_MODULE_PARAMETERS() macro usage, what's inside it is + * the prefix). + * + * + * Requirements are modest; only a bulk-in and a bulk-out endpoint are + * needed. The memory requirement amounts to two 16K buffers, size + * configurable by a parameter. Support is included for both + * full-speed and high-speed operation. + * + * Note that the driver is slightly non-portable in that it assumes a + * single memory/DMA buffer will be useable for bulk-in, bulk-out, and + * interrupt-in endpoints. With most device controllers this isn't an + * issue, but there may be some with hardware restrictions that prevent + * a buffer from being used by more than one endpoint. + * + * + * The pathnames of the backing files and the ro settings are + * available in the attribute files "file" and "ro" in the lun<n> (or + * to be more precise in a directory which name comes from + * "lun_name_format" option!) subdirectory of the gadget's sysfs + * directory. If the "removable" option is set, writing to these + * files will simulate ejecting/loading the medium (writing an empty + * line means eject) and adjusting a write-enable tab. Changes to the + * ro setting are not allowed when the medium is loaded or if CD-ROM + * emulation is being used. + * + * + * This function is heavily based on "File-backed Storage Gadget" by + * Alan Stern which in turn is heavily based on "Gadget Zero" by David + * Brownell. The driver's SCSI command interface was based on the + * "Information technology - Small Computer System Interface - 2" + * document from X3T9.2 Project 375D, Revision 10L, 7-SEP-93, + * available at <http://www.t10.org/ftp/t10/drafts/s2/s2-r10l.pdf>. + * The single exception is opcode 0x23 (READ FORMAT CAPACITIES), which + * was based on the "Universal Serial Bus Mass Storage Class UFI + * Command Specification" document, Revision 1.0, December 14, 1998, + * available at + * <http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf>. + */ + + +/* + * Driver Design + * + * The MSF is fairly straightforward. There is a main kernel + * thread that handles most of the work. Interrupt routines field + * callbacks from the controller driver: bulk- and interrupt-request + * completion notifications, endpoint-0 events, and disconnect events. + * Completion events are passed to the main thread by wakeup calls. Many + * ep0 requests are handled at interrupt time, but SetInterface, + * SetConfiguration, and device reset requests are forwarded to the + * thread in the form of "exceptions" using SIGUSR1 signals (since they + * should interrupt any ongoing file I/O operations). + * + * The thread's main routine implements the standard command/data/status + * parts of a SCSI interaction. It and its subroutines are full of tests + * for pending signals/exceptions -- all this polling is necessary since + * the kernel has no setjmp/longjmp equivalents. (Maybe this is an + * indication that the driver really wants to be running in userspace.) + * An important point is that so long as the thread is alive it keeps an + * open reference to the backing file. This will prevent unmounting + * the backing file's underlying filesystem and could cause problems + * during system shutdown, for example. To prevent such problems, the + * thread catches INT, TERM, and KILL signals and converts them into + * an EXIT exception. + * + * In normal operation the main thread is started during the gadget's + * fsg_bind() callback and stopped during fsg_unbind(). But it can + * also exit when it receives a signal, and there's no point leaving + * the gadget running when the thread is dead. At of this moment, MSF + * provides no way to deregister the gadget when thread dies -- maybe + * a callback functions is needed. + * + * To provide maximum throughput, the driver uses a circular pipeline of + * buffer heads (struct fsg_buffhd). In principle the pipeline can be + * arbitrarily long; in practice the benefits don't justify having more + * than 2 stages (i.e., double buffering). But it helps to think of the + * pipeline as being a long one. Each buffer head contains a bulk-in and + * a bulk-out request pointer (since the buffer can be used for both + * output and input -- directions always are given from the host's + * point of view) as well as a pointer to the buffer and various state + * variables. + * + * Use of the pipeline follows a simple protocol. There is a variable + * (fsg->next_buffhd_to_fill) that points to the next buffer head to use. + * At any time that buffer head may still be in use from an earlier + * request, so each buffer head has a state variable indicating whether + * it is EMPTY, FULL, or BUSY. Typical use involves waiting for the + * buffer head to be EMPTY, filling the buffer either by file I/O or by + * USB I/O (during which the buffer head is BUSY), and marking the buffer + * head FULL when the I/O is complete. Then the buffer will be emptied + * (again possibly by USB I/O, during which it is marked BUSY) and + * finally marked EMPTY again (possibly by a completion routine). + * + * A module parameter tells the driver to avoid stalling the bulk + * endpoints wherever the transport specification allows. This is + * necessary for some UDCs like the SuperH, which cannot reliably clear a + * halt on a bulk endpoint. However, under certain circumstances the + * Bulk-only specification requires a stall. In such cases the driver + * will halt the endpoint and set a flag indicating that it should clear + * the halt in software during the next device reset. Hopefully this + * will permit everything to work correctly. Furthermore, although the + * specification allows the bulk-out endpoint to halt when the host sends + * too much data, implementing this would cause an unavoidable race. + * The driver will always use the "no-stall" approach for OUT transfers. + * + * One subtle point concerns sending status-stage responses for ep0 + * requests. Some of these requests, such as device reset, can involve + * interrupting an ongoing file I/O operation, which might take an + * arbitrarily long time. During that delay the host might give up on + * the original ep0 request and issue a new one. When that happens the + * driver should not notify the host about completion of the original + * request, as the host will no longer be waiting for it. So the driver + * assigns to each ep0 request a unique tag, and it keeps track of the + * tag value of the request associated with a long-running exception + * (device-reset, interface-change, or configuration-change). When the + * exception handler is finished, the status-stage response is submitted + * only if the current ep0 request tag is equal to the exception request + * tag. Thus only the most recently received ep0 request will get a + * status-stage response. + * + * Warning: This driver source file is too long. It ought to be split up + * into a header file plus about 3 separate .c files, to handle the details + * of the Gadget, USB Mass Storage, and SCSI protocols. + */ + + +/* #define VERBOSE_DEBUG */ +/* #define DUMP_MSGS */ + + +#include <linux/blkdev.h> +#include <linux/completion.h> +#include <linux/dcache.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/fcntl.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/kref.h> +#include <linux/kthread.h> +#include <linux/limits.h> +#include <linux/rwsem.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/string.h> +#include <linux/freezer.h> +#include <linux/utsname.h> + +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + +#include "gadget_chips.h" + + + +/*------------------------------------------------------------------------*/ + +#define FSG_DRIVER_DESC "Mass Storage Function" +#define FSG_DRIVER_VERSION "2009/09/11" + +static const char fsg_string_interface[] = "Mass Storage"; + + +#define FSG_NO_INTR_EP 1 +#define FSG_BUFFHD_STATIC_BUFFER 1 +#define FSG_NO_DEVICE_STRINGS 1 +#define FSG_NO_OTG 1 +#define FSG_NO_INTR_EP 1 + +#include "storage_common.c" + + +/*-------------------------------------------------------------------------*/ + +struct fsg_dev; + + +/* Data shared by all the FSG instances. */ +struct fsg_common { + struct usb_gadget *gadget; + struct fsg_dev *fsg; + struct fsg_dev *prev_fsg; + + /* filesem protects: backing files in use */ + struct rw_semaphore filesem; + + /* lock protects: state, all the req_busy's */ + spinlock_t lock; + + struct usb_ep *ep0; /* Copy of gadget->ep0 */ + struct usb_request *ep0req; /* Copy of cdev->req */ + unsigned int ep0_req_tag; + const char *ep0req_name; + + struct fsg_buffhd *next_buffhd_to_fill; + struct fsg_buffhd *next_buffhd_to_drain; + struct fsg_buffhd buffhds[FSG_NUM_BUFFERS]; + + int cmnd_size; + u8 cmnd[MAX_COMMAND_SIZE]; + + unsigned int nluns; + unsigned int lun; + struct fsg_lun *luns; + struct fsg_lun *curlun; + + unsigned int bulk_out_maxpacket; + enum fsg_state state; /* For exception handling */ + unsigned int exception_req_tag; + + u8 config, new_config; + enum data_direction data_dir; + u32 data_size; + u32 data_size_from_cmnd; + u32 tag; + u32 residue; + u32 usb_amount_left; + + unsigned int can_stall:1; + unsigned int free_storage_on_release:1; + unsigned int phase_error:1; + unsigned int short_packet_received:1; + unsigned int bad_lun_okay:1; + unsigned int running:1; + + int thread_wakeup_needed; + struct completion thread_notifier; + struct task_struct *thread_task; + + /* Callback function to call when thread exits. */ + void (*thread_exits)(struct fsg_common *common); + /* Gadget's private data. */ + void *private_data; + + /* Vendor (8 chars), product (16 chars), release (4 + * hexadecimal digits) and NUL byte */ + char inquiry_string[8 + 16 + 4 + 1]; + + struct kref ref; +}; + + +struct fsg_config { + unsigned nluns; + struct fsg_lun_config { + const char *filename; + char ro; + char removable; + char cdrom; + } luns[FSG_MAX_LUNS]; + + const char *lun_name_format; + const char *thread_name; + + /* Callback function to call when thread exits. */ + void (*thread_exits)(struct fsg_common *common); + /* Gadget's private data. */ + void *private_data; + + const char *vendor_name; /* 8 characters or less */ + const char *product_name; /* 16 characters or less */ + u16 release; + + char can_stall; +}; + + +struct fsg_dev { + struct usb_function function; + struct usb_gadget *gadget; /* Copy of cdev->gadget */ + struct fsg_common *common; + + u16 interface_number; + + unsigned int bulk_in_enabled:1; + unsigned int bulk_out_enabled:1; + + unsigned long atomic_bitflags; +#define IGNORE_BULK_OUT 0 + + struct usb_ep *bulk_in; + struct usb_ep *bulk_out; +}; + + +static inline int __fsg_is_set(struct fsg_common *common, + const char *func, unsigned line) +{ + if (common->fsg) + return 1; + ERROR(common, "common->fsg is NULL in %s at %u\n", func, line); + return 0; +} + +#define fsg_is_set(common) likely(__fsg_is_set(common, __func__, __LINE__)) + + +static inline struct fsg_dev *fsg_from_func(struct usb_function *f) +{ + return container_of(f, struct fsg_dev, function); +} + + +typedef void (*fsg_routine_t)(struct fsg_dev *); + +static int exception_in_progress(struct fsg_common *common) +{ + return common->state > FSG_STATE_IDLE; +} + +/* Make bulk-out requests be divisible by the maxpacket size */ +static void set_bulk_out_req_length(struct fsg_common *common, + struct fsg_buffhd *bh, unsigned int length) +{ + unsigned int rem; + + bh->bulk_out_intended_length = length; + rem = length % common->bulk_out_maxpacket; + if (rem > 0) + length += common->bulk_out_maxpacket - rem; + bh->outreq->length = length; +} + +/*-------------------------------------------------------------------------*/ + +static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) +{ + const char *name; + + if (ep == fsg->bulk_in) + name = "bulk-in"; + else if (ep == fsg->bulk_out) + name = "bulk-out"; + else + name = ep->name; + DBG(fsg, "%s set halt\n", name); + return usb_ep_set_halt(ep); +} + + +/*-------------------------------------------------------------------------*/ + +/* These routines may be called in process context or in_irq */ + +/* Caller must hold fsg->lock */ +static void wakeup_thread(struct fsg_common *common) +{ + /* Tell the main thread that something has happened */ + common->thread_wakeup_needed = 1; + if (common->thread_task) + wake_up_process(common->thread_task); +} + + +static void raise_exception(struct fsg_common *common, enum fsg_state new_state) +{ + unsigned long flags; + + /* Do nothing if a higher-priority exception is already in progress. + * If a lower-or-equal priority exception is in progress, preempt it + * and notify the main thread by sending it a signal. */ + spin_lock_irqsave(&common->lock, flags); + if (common->state <= new_state) { + common->exception_req_tag = common->ep0_req_tag; + common->state = new_state; + if (common->thread_task) + send_sig_info(SIGUSR1, SEND_SIG_FORCED, + common->thread_task); + } + spin_unlock_irqrestore(&common->lock, flags); +} + + +/*-------------------------------------------------------------------------*/ + +static int ep0_queue(struct fsg_common *common) +{ + int rc; + + rc = usb_ep_queue(common->ep0, common->ep0req, GFP_ATOMIC); + common->ep0->driver_data = common; + if (rc != 0 && rc != -ESHUTDOWN) { + /* We can't do much more than wait for a reset */ + WARNING(common, "error in submission: %s --> %d\n", + common->ep0->name, rc); + } + return rc; +} + +/*-------------------------------------------------------------------------*/ + +/* Bulk and interrupt endpoint completion handlers. + * These always run in_irq. */ + +static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct fsg_common *common = ep->driver_data; + struct fsg_buffhd *bh = req->context; + + if (req->status || req->actual != req->length) + DBG(common, "%s --> %d, %u/%u\n", __func__, + req->status, req->actual, req->length); + if (req->status == -ECONNRESET) /* Request was cancelled */ + usb_ep_fifo_flush(ep); + + /* Hold the lock while we update the request and buffer states */ + smp_wmb(); + spin_lock(&common->lock); + bh->inreq_busy = 0; + bh->state = BUF_STATE_EMPTY; + wakeup_thread(common); + spin_unlock(&common->lock); +} + +static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct fsg_common *common = ep->driver_data; + struct fsg_buffhd *bh = req->context; + + dump_msg(common, "bulk-out", req->buf, req->actual); + if (req->status || req->actual != bh->bulk_out_intended_length) + DBG(common, "%s --> %d, %u/%u\n", __func__, + req->status, req->actual, + bh->bulk_out_intended_length); + if (req->status == -ECONNRESET) /* Request was cancelled */ + usb_ep_fifo_flush(ep); + + /* Hold the lock while we update the request and buffer states */ + smp_wmb(); + spin_lock(&common->lock); + bh->outreq_busy = 0; + bh->state = BUF_STATE_FULL; + wakeup_thread(common); + spin_unlock(&common->lock); +} + + +/*-------------------------------------------------------------------------*/ + +/* Ep0 class-specific handlers. These always run in_irq. */ + +static int fsg_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) +{ + struct fsg_dev *fsg = fsg_from_func(f); + struct usb_request *req = fsg->common->ep0req; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + if (!fsg->common->config) + return -EOPNOTSUPP; + + switch (ctrl->bRequest) { + + case USB_BULK_RESET_REQUEST: + if (ctrl->bRequestType != + (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE)) + break; + if (w_index != fsg->interface_number || w_value != 0) + return -EDOM; + + /* Raise an exception to stop the current operation + * and reinitialize our state. */ + DBG(fsg, "bulk reset request\n"); + raise_exception(fsg->common, FSG_STATE_RESET); + return DELAYED_STATUS; + + case USB_BULK_GET_MAX_LUN_REQUEST: + if (ctrl->bRequestType != + (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE)) + break; + if (w_index != fsg->interface_number || w_value != 0) + return -EDOM; + VDBG(fsg, "get max LUN\n"); + *(u8 *) req->buf = fsg->common->nluns - 1; + return 1; + } + + VDBG(fsg, + "unknown class-specific control req " + "%02x.%02x v%04x i%04x l%u\n", + ctrl->bRequestType, ctrl->bRequest, + le16_to_cpu(ctrl->wValue), w_index, w_length); + return -EOPNOTSUPP; +} + + +/*-------------------------------------------------------------------------*/ + +/* All the following routines run in process context */ + + +/* Use this for bulk or interrupt transfers, not ep0 */ +static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep, + struct usb_request *req, int *pbusy, + enum fsg_buffer_state *state) +{ + int rc; + + if (ep == fsg->bulk_in) + dump_msg(fsg, "bulk-in", req->buf, req->length); + + spin_lock_irq(&fsg->common->lock); + *pbusy = 1; + *state = BUF_STATE_BUSY; + spin_unlock_irq(&fsg->common->lock); + rc = usb_ep_queue(ep, req, GFP_KERNEL); + if (rc != 0) { + *pbusy = 0; + *state = BUF_STATE_EMPTY; + + /* We can't do much more than wait for a reset */ + + /* Note: currently the net2280 driver fails zero-length + * submissions if DMA is enabled. */ + if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP && + req->length == 0)) + WARNING(fsg, "error in submission: %s --> %d\n", + ep->name, rc); + } +} + +#define START_TRANSFER_OR(common, ep_name, req, pbusy, state) \ + if (fsg_is_set(common)) \ + start_transfer((common)->fsg, (common)->fsg->ep_name, \ + req, pbusy, state); \ + else + +#define START_TRANSFER(common, ep_name, req, pbusy, state) \ + START_TRANSFER_OR(common, ep_name, req, pbusy, state) (void)0 + + + +static int sleep_thread(struct fsg_common *common) +{ + int rc = 0; + + /* Wait until a signal arrives or we are woken up */ + for (;;) { + try_to_freeze(); + set_current_state(TASK_INTERRUPTIBLE); + if (signal_pending(current)) { + rc = -EINTR; + break; + } + if (common->thread_wakeup_needed) + break; + schedule(); + } + __set_current_state(TASK_RUNNING); + common->thread_wakeup_needed = 0; + return rc; +} + + +/*-------------------------------------------------------------------------*/ + +static int do_read(struct fsg_common *common) +{ + struct fsg_lun *curlun = common->curlun; + u32 lba; + struct fsg_buffhd *bh; + int rc; + u32 amount_left; + loff_t file_offset, file_offset_tmp; + unsigned int amount; + unsigned int partial_page; + ssize_t nread; + + /* Get the starting Logical Block Address and check that it's + * not too big */ + if (common->cmnd[0] == SC_READ_6) + lba = get_unaligned_be24(&common->cmnd[1]); + else { + lba = get_unaligned_be32(&common->cmnd[2]); + + /* We allow DPO (Disable Page Out = don't save data in the + * cache) and FUA (Force Unit Access = don't read from the + * cache), but we don't implement them. */ + if ((common->cmnd[1] & ~0x18) != 0) { + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + } + if (lba >= curlun->num_sectors) { + curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + return -EINVAL; + } + file_offset = ((loff_t) lba) << 9; + + /* Carry out the file reads */ + amount_left = common->data_size_from_cmnd; + if (unlikely(amount_left == 0)) + return -EIO; /* No default reply */ + + for (;;) { + + /* Figure out how much we need to read: + * Try to read the remaining amount. + * But don't read more than the buffer size. + * And don't try to read past the end of the file. + * Finally, if we're not at a page boundary, don't read past + * the next page. + * If this means reading 0 then we were asked to read past + * the end of file. */ + amount = min(amount_left, FSG_BUFLEN); + amount = min((loff_t) amount, + curlun->file_length - file_offset); + partial_page = file_offset & (PAGE_CACHE_SIZE - 1); + if (partial_page > 0) + amount = min(amount, (unsigned int) PAGE_CACHE_SIZE - + partial_page); + + /* Wait for the next buffer to become available */ + bh = common->next_buffhd_to_fill; + while (bh->state != BUF_STATE_EMPTY) { + rc = sleep_thread(common); + if (rc) + return rc; + } + + /* If we were asked to read past the end of file, + * end with an empty buffer. */ + if (amount == 0) { + curlun->sense_data = + SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + curlun->sense_data_info = file_offset >> 9; + curlun->info_valid = 1; + bh->inreq->length = 0; + bh->state = BUF_STATE_FULL; + break; + } + + /* Perform the read */ + file_offset_tmp = file_offset; + nread = vfs_read(curlun->filp, + (char __user *) bh->buf, + amount, &file_offset_tmp); + VLDBG(curlun, "file read %u @ %llu -> %d\n", amount, + (unsigned long long) file_offset, + (int) nread); + if (signal_pending(current)) + return -EINTR; + + if (nread < 0) { + LDBG(curlun, "error in file read: %d\n", + (int) nread); + nread = 0; + } else if (nread < amount) { + LDBG(curlun, "partial file read: %d/%u\n", + (int) nread, amount); + nread -= (nread & 511); /* Round down to a block */ + } + file_offset += nread; + amount_left -= nread; + common->residue -= nread; + bh->inreq->length = nread; + bh->state = BUF_STATE_FULL; + + /* If an error occurred, report it and its position */ + if (nread < amount) { + curlun->sense_data = SS_UNRECOVERED_READ_ERROR; + curlun->sense_data_info = file_offset >> 9; + curlun->info_valid = 1; + break; + } + + if (amount_left == 0) + break; /* No more left to read */ + + /* Send this buffer and go read some more */ + bh->inreq->zero = 0; + START_TRANSFER_OR(common, bulk_in, bh->inreq, + &bh->inreq_busy, &bh->state) + /* Don't know what to do if + * common->fsg is NULL */ + return -EIO; + common->next_buffhd_to_fill = bh->next; + } + + return -EIO; /* No default reply */ +} + + +/*-------------------------------------------------------------------------*/ + +static int do_write(struct fsg_common *common) +{ + struct fsg_lun *curlun = common->curlun; + u32 lba; + struct fsg_buffhd *bh; + int get_some_more; + u32 amount_left_to_req, amount_left_to_write; + loff_t usb_offset, file_offset, file_offset_tmp; + unsigned int amount; + unsigned int partial_page; + ssize_t nwritten; + int rc; + + if (curlun->ro) { + curlun->sense_data = SS_WRITE_PROTECTED; + return -EINVAL; + } + spin_lock(&curlun->filp->f_lock); + curlun->filp->f_flags &= ~O_SYNC; /* Default is not to wait */ + spin_unlock(&curlun->filp->f_lock); + + /* Get the starting Logical Block Address and check that it's + * not too big */ + if (common->cmnd[0] == SC_WRITE_6) + lba = get_unaligned_be24(&common->cmnd[1]); + else { + lba = get_unaligned_be32(&common->cmnd[2]); + + /* We allow DPO (Disable Page Out = don't save data in the + * cache) and FUA (Force Unit Access = write directly to the + * medium). We don't implement DPO; we implement FUA by + * performing synchronous output. */ + if (common->cmnd[1] & ~0x18) { + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + if (common->cmnd[1] & 0x08) { /* FUA */ + spin_lock(&curlun->filp->f_lock); + curlun->filp->f_flags |= O_SYNC; + spin_unlock(&curlun->filp->f_lock); + } + } + if (lba >= curlun->num_sectors) { + curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + return -EINVAL; + } + + /* Carry out the file writes */ + get_some_more = 1; + file_offset = usb_offset = ((loff_t) lba) << 9; + amount_left_to_req = common->data_size_from_cmnd; + amount_left_to_write = common->data_size_from_cmnd; + + while (amount_left_to_write > 0) { + + /* Queue a request for more data from the host */ + bh = common->next_buffhd_to_fill; + if (bh->state == BUF_STATE_EMPTY && get_some_more) { + + /* Figure out how much we want to get: + * Try to get the remaining amount. + * But don't get more than the buffer size. + * And don't try to go past the end of the file. + * If we're not at a page boundary, + * don't go past the next page. + * If this means getting 0, then we were asked + * to write past the end of file. + * Finally, round down to a block boundary. */ + amount = min(amount_left_to_req, FSG_BUFLEN); + amount = min((loff_t) amount, curlun->file_length - + usb_offset); + partial_page = usb_offset & (PAGE_CACHE_SIZE - 1); + if (partial_page > 0) + amount = min(amount, + (unsigned int) PAGE_CACHE_SIZE - partial_page); + + if (amount == 0) { + get_some_more = 0; + curlun->sense_data = + SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + curlun->sense_data_info = usb_offset >> 9; + curlun->info_valid = 1; + continue; + } + amount -= (amount & 511); + if (amount == 0) { + + /* Why were we were asked to transfer a + * partial block? */ + get_some_more = 0; + continue; + } + + /* Get the next buffer */ + usb_offset += amount; + common->usb_amount_left -= amount; + amount_left_to_req -= amount; + if (amount_left_to_req == 0) + get_some_more = 0; + + /* amount is always divisible by 512, hence by + * the bulk-out maxpacket size */ + bh->outreq->length = amount; + bh->bulk_out_intended_length = amount; + bh->outreq->short_not_ok = 1; + START_TRANSFER_OR(common, bulk_out, bh->outreq, + &bh->outreq_busy, &bh->state) + /* Don't know what to do if + * common->fsg is NULL */ + return -EIO; + common->next_buffhd_to_fill = bh->next; + continue; + } + + /* Write the received data to the backing file */ + bh = common->next_buffhd_to_drain; + if (bh->state == BUF_STATE_EMPTY && !get_some_more) + break; /* We stopped early */ + if (bh->state == BUF_STATE_FULL) { + smp_rmb(); + common->next_buffhd_to_drain = bh->next; + bh->state = BUF_STATE_EMPTY; + + /* Did something go wrong with the transfer? */ + if (bh->outreq->status != 0) { + curlun->sense_data = SS_COMMUNICATION_FAILURE; + curlun->sense_data_info = file_offset >> 9; + curlun->info_valid = 1; + break; + } + + amount = bh->outreq->actual; + if (curlun->file_length - file_offset < amount) { + LERROR(curlun, + "write %u @ %llu beyond end %llu\n", + amount, (unsigned long long) file_offset, + (unsigned long long) curlun->file_length); + amount = curlun->file_length - file_offset; + } + + /* Perform the write */ + file_offset_tmp = file_offset; + nwritten = vfs_write(curlun->filp, + (char __user *) bh->buf, + amount, &file_offset_tmp); + VLDBG(curlun, "file write %u @ %llu -> %d\n", amount, + (unsigned long long) file_offset, + (int) nwritten); + if (signal_pending(current)) + return -EINTR; /* Interrupted! */ + + if (nwritten < 0) { + LDBG(curlun, "error in file write: %d\n", + (int) nwritten); + nwritten = 0; + } else if (nwritten < amount) { + LDBG(curlun, "partial file write: %d/%u\n", + (int) nwritten, amount); + nwritten -= (nwritten & 511); + /* Round down to a block */ + } + file_offset += nwritten; + amount_left_to_write -= nwritten; + common->residue -= nwritten; + + /* If an error occurred, report it and its position */ + if (nwritten < amount) { + curlun->sense_data = SS_WRITE_ERROR; + curlun->sense_data_info = file_offset >> 9; + curlun->info_valid = 1; + break; + } + + /* Did the host decide to stop early? */ + if (bh->outreq->actual != bh->outreq->length) { + common->short_packet_received = 1; + break; + } + continue; + } + + /* Wait for something to happen */ + rc = sleep_thread(common); + if (rc) + return rc; + } + + return -EIO; /* No default reply */ +} + + +/*-------------------------------------------------------------------------*/ + +static int do_synchronize_cache(struct fsg_common *common) +{ + struct fsg_lun *curlun = common->curlun; + int rc; + + /* We ignore the requested LBA and write out all file's + * dirty data buffers. */ + rc = fsg_lun_fsync_sub(curlun); + if (rc) + curlun->sense_data = SS_WRITE_ERROR; + return 0; +} + + +/*-------------------------------------------------------------------------*/ + +static void invalidate_sub(struct fsg_lun *curlun) +{ + struct file *filp = curlun->filp; + struct inode *inode = filp->f_path.dentry->d_inode; + unsigned long rc; + + rc = invalidate_mapping_pages(inode->i_mapping, 0, -1); + VLDBG(curlun, "invalidate_inode_pages -> %ld\n", rc); +} + +static int do_verify(struct fsg_common *common) +{ + struct fsg_lun *curlun = common->curlun; + u32 lba; + u32 verification_length; + struct fsg_buffhd *bh = common->next_buffhd_to_fill; + loff_t file_offset, file_offset_tmp; + u32 amount_left; + unsigned int amount; + ssize_t nread; + + /* Get the starting Logical Block Address and check that it's + * not too big */ + lba = get_unaligned_be32(&common->cmnd[2]); + if (lba >= curlun->num_sectors) { + curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + return -EINVAL; + } + + /* We allow DPO (Disable Page Out = don't save data in the + * cache) but we don't implement it. */ + if (common->cmnd[1] & ~0x10) { + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + + verification_length = get_unaligned_be16(&common->cmnd[7]); + if (unlikely(verification_length == 0)) + return -EIO; /* No default reply */ + + /* Prepare to carry out the file verify */ + amount_left = verification_length << 9; + file_offset = ((loff_t) lba) << 9; + + /* Write out all the dirty buffers before invalidating them */ + fsg_lun_fsync_sub(curlun); + if (signal_pending(current)) + return -EINTR; + + invalidate_sub(curlun); + if (signal_pending(current)) + return -EINTR; + + /* Just try to read the requested blocks */ + while (amount_left > 0) { + + /* Figure out how much we need to read: + * Try to read the remaining amount, but not more than + * the buffer size. + * And don't try to read past the end of the file. + * If this means reading 0 then we were asked to read + * past the end of file. */ + amount = min(amount_left, FSG_BUFLEN); + amount = min((loff_t) amount, + curlun->file_length - file_offset); + if (amount == 0) { + curlun->sense_data = + SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + curlun->sense_data_info = file_offset >> 9; + curlun->info_valid = 1; + break; + } + + /* Perform the read */ + file_offset_tmp = file_offset; + nread = vfs_read(curlun->filp, + (char __user *) bh->buf, + amount, &file_offset_tmp); + VLDBG(curlun, "file read %u @ %llu -> %d\n", amount, + (unsigned long long) file_offset, + (int) nread); + if (signal_pending(current)) + return -EINTR; + + if (nread < 0) { + LDBG(curlun, "error in file verify: %d\n", + (int) nread); + nread = 0; + } else if (nread < amount) { + LDBG(curlun, "partial file verify: %d/%u\n", + (int) nread, amount); + nread -= (nread & 511); /* Round down to a sector */ + } + if (nread == 0) { + curlun->sense_data = SS_UNRECOVERED_READ_ERROR; + curlun->sense_data_info = file_offset >> 9; + curlun->info_valid = 1; + break; + } + file_offset += nread; + amount_left -= nread; + } + return 0; +} + + +/*-------------------------------------------------------------------------*/ + +static int do_inquiry(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + u8 *buf = (u8 *) bh->buf; + + if (!curlun) { /* Unsupported LUNs are okay */ + common->bad_lun_okay = 1; + memset(buf, 0, 36); + buf[0] = 0x7f; /* Unsupported, no device-type */ + buf[4] = 31; /* Additional length */ + return 36; + } + + buf[0] = curlun->cdrom ? TYPE_CDROM : TYPE_DISK; + buf[1] = curlun->removable ? 0x80 : 0; + buf[2] = 2; /* ANSI SCSI level 2 */ + buf[3] = 2; /* SCSI-2 INQUIRY data format */ + buf[4] = 31; /* Additional length */ + buf[5] = 0; /* No special options */ + buf[6] = 0; + buf[7] = 0; + memcpy(buf + 8, common->inquiry_string, sizeof common->inquiry_string); + return 36; +} + + +static int do_request_sense(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + u8 *buf = (u8 *) bh->buf; + u32 sd, sdinfo; + int valid; + + /* + * From the SCSI-2 spec., section 7.9 (Unit attention condition): + * + * If a REQUEST SENSE command is received from an initiator + * with a pending unit attention condition (before the target + * generates the contingent allegiance condition), then the + * target shall either: + * a) report any pending sense data and preserve the unit + * attention condition on the logical unit, or, + * b) report the unit attention condition, may discard any + * pending sense data, and clear the unit attention + * condition on the logical unit for that initiator. + * + * FSG normally uses option a); enable this code to use option b). + */ +#if 0 + if (curlun && curlun->unit_attention_data != SS_NO_SENSE) { + curlun->sense_data = curlun->unit_attention_data; + curlun->unit_attention_data = SS_NO_SENSE; + } +#endif + + if (!curlun) { /* Unsupported LUNs are okay */ + common->bad_lun_okay = 1; + sd = SS_LOGICAL_UNIT_NOT_SUPPORTED; + sdinfo = 0; + valid = 0; + } else { + sd = curlun->sense_data; + sdinfo = curlun->sense_data_info; + valid = curlun->info_valid << 7; + curlun->sense_data = SS_NO_SENSE; + curlun->sense_data_info = 0; + curlun->info_valid = 0; + } + + memset(buf, 0, 18); + buf[0] = valid | 0x70; /* Valid, current error */ + buf[2] = SK(sd); + put_unaligned_be32(sdinfo, &buf[3]); /* Sense information */ + buf[7] = 18 - 8; /* Additional sense length */ + buf[12] = ASC(sd); + buf[13] = ASCQ(sd); + return 18; +} + + +static int do_read_capacity(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + u32 lba = get_unaligned_be32(&common->cmnd[2]); + int pmi = common->cmnd[8]; + u8 *buf = (u8 *) bh->buf; + + /* Check the PMI and LBA fields */ + if (pmi > 1 || (pmi == 0 && lba != 0)) { + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + + put_unaligned_be32(curlun->num_sectors - 1, &buf[0]); + /* Max logical block */ + put_unaligned_be32(512, &buf[4]); /* Block length */ + return 8; +} + + +static int do_read_header(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + int msf = common->cmnd[1] & 0x02; + u32 lba = get_unaligned_be32(&common->cmnd[2]); + u8 *buf = (u8 *) bh->buf; + + if (common->cmnd[1] & ~0x02) { /* Mask away MSF */ + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + if (lba >= curlun->num_sectors) { + curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE; + return -EINVAL; + } + + memset(buf, 0, 8); + buf[0] = 0x01; /* 2048 bytes of user data, rest is EC */ + store_cdrom_address(&buf[4], msf, lba); + return 8; +} + + +static int do_read_toc(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + int msf = common->cmnd[1] & 0x02; + int start_track = common->cmnd[6]; + u8 *buf = (u8 *) bh->buf; + + if ((common->cmnd[1] & ~0x02) != 0 || /* Mask away MSF */ + start_track > 1) { + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + + memset(buf, 0, 20); + buf[1] = (20-2); /* TOC data length */ + buf[2] = 1; /* First track number */ + buf[3] = 1; /* Last track number */ + buf[5] = 0x16; /* Data track, copying allowed */ + buf[6] = 0x01; /* Only track is number 1 */ + store_cdrom_address(&buf[8], msf, 0); + + buf[13] = 0x16; /* Lead-out track is data */ + buf[14] = 0xAA; /* Lead-out track number */ + store_cdrom_address(&buf[16], msf, curlun->num_sectors); + return 20; +} + + +static int do_mode_sense(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + int mscmnd = common->cmnd[0]; + u8 *buf = (u8 *) bh->buf; + u8 *buf0 = buf; + int pc, page_code; + int changeable_values, all_pages; + int valid_page = 0; + int len, limit; + + if ((common->cmnd[1] & ~0x08) != 0) { /* Mask away DBD */ + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + pc = common->cmnd[2] >> 6; + page_code = common->cmnd[2] & 0x3f; + if (pc == 3) { + curlun->sense_data = SS_SAVING_PARAMETERS_NOT_SUPPORTED; + return -EINVAL; + } + changeable_values = (pc == 1); + all_pages = (page_code == 0x3f); + + /* Write the mode parameter header. Fixed values are: default + * medium type, no cache control (DPOFUA), and no block descriptors. + * The only variable value is the WriteProtect bit. We will fill in + * the mode data length later. */ + memset(buf, 0, 8); + if (mscmnd == SC_MODE_SENSE_6) { + buf[2] = (curlun->ro ? 0x80 : 0x00); /* WP, DPOFUA */ + buf += 4; + limit = 255; + } else { /* SC_MODE_SENSE_10 */ + buf[3] = (curlun->ro ? 0x80 : 0x00); /* WP, DPOFUA */ + buf += 8; + limit = 65535; /* Should really be FSG_BUFLEN */ + } + + /* No block descriptors */ + + /* The mode pages, in numerical order. The only page we support + * is the Caching page. */ + if (page_code == 0x08 || all_pages) { + valid_page = 1; + buf[0] = 0x08; /* Page code */ + buf[1] = 10; /* Page length */ + memset(buf+2, 0, 10); /* None of the fields are changeable */ + + if (!changeable_values) { + buf[2] = 0x04; /* Write cache enable, */ + /* Read cache not disabled */ + /* No cache retention priorities */ + put_unaligned_be16(0xffff, &buf[4]); + /* Don't disable prefetch */ + /* Minimum prefetch = 0 */ + put_unaligned_be16(0xffff, &buf[8]); + /* Maximum prefetch */ + put_unaligned_be16(0xffff, &buf[10]); + /* Maximum prefetch ceiling */ + } + buf += 12; + } + + /* Check that a valid page was requested and the mode data length + * isn't too long. */ + len = buf - buf0; + if (!valid_page || len > limit) { + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + + /* Store the mode data length */ + if (mscmnd == SC_MODE_SENSE_6) + buf0[0] = len - 1; + else + put_unaligned_be16(len - 2, buf0); + return len; +} + + +static int do_start_stop(struct fsg_common *common) +{ + if (!common->curlun) { + return -EINVAL; + } else if (!common->curlun->removable) { + common->curlun->sense_data = SS_INVALID_COMMAND; + return -EINVAL; + } + return 0; +} + + +static int do_prevent_allow(struct fsg_common *common) +{ + struct fsg_lun *curlun = common->curlun; + int prevent; + + if (!common->curlun) { + return -EINVAL; + } else if (!common->curlun->removable) { + common->curlun->sense_data = SS_INVALID_COMMAND; + return -EINVAL; + } + + prevent = common->cmnd[4] & 0x01; + if ((common->cmnd[4] & ~0x01) != 0) { /* Mask away Prevent */ + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + + if (curlun->prevent_medium_removal && !prevent) + fsg_lun_fsync_sub(curlun); + curlun->prevent_medium_removal = prevent; + return 0; +} + + +static int do_read_format_capacities(struct fsg_common *common, + struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + u8 *buf = (u8 *) bh->buf; + + buf[0] = buf[1] = buf[2] = 0; + buf[3] = 8; /* Only the Current/Maximum Capacity Descriptor */ + buf += 4; + + put_unaligned_be32(curlun->num_sectors, &buf[0]); + /* Number of blocks */ + put_unaligned_be32(512, &buf[4]); /* Block length */ + buf[4] = 0x02; /* Current capacity */ + return 12; +} + + +static int do_mode_select(struct fsg_common *common, struct fsg_buffhd *bh) +{ + struct fsg_lun *curlun = common->curlun; + + /* We don't support MODE SELECT */ + if (curlun) + curlun->sense_data = SS_INVALID_COMMAND; + return -EINVAL; +} + + +/*-------------------------------------------------------------------------*/ + +static int halt_bulk_in_endpoint(struct fsg_dev *fsg) +{ + int rc; + + rc = fsg_set_halt(fsg, fsg->bulk_in); + if (rc == -EAGAIN) + VDBG(fsg, "delayed bulk-in endpoint halt\n"); + while (rc != 0) { + if (rc != -EAGAIN) { + WARNING(fsg, "usb_ep_set_halt -> %d\n", rc); + rc = 0; + break; + } + + /* Wait for a short time and then try again */ + if (msleep_interruptible(100) != 0) + return -EINTR; + rc = usb_ep_set_halt(fsg->bulk_in); + } + return rc; +} + +static int wedge_bulk_in_endpoint(struct fsg_dev *fsg) +{ + int rc; + + DBG(fsg, "bulk-in set wedge\n"); + rc = usb_ep_set_wedge(fsg->bulk_in); + if (rc == -EAGAIN) + VDBG(fsg, "delayed bulk-in endpoint wedge\n"); + while (rc != 0) { + if (rc != -EAGAIN) { + WARNING(fsg, "usb_ep_set_wedge -> %d\n", rc); + rc = 0; + break; + } + + /* Wait for a short time and then try again */ + if (msleep_interruptible(100) != 0) + return -EINTR; + rc = usb_ep_set_wedge(fsg->bulk_in); + } + return rc; +} + +static int pad_with_zeros(struct fsg_dev *fsg) +{ + struct fsg_buffhd *bh = fsg->common->next_buffhd_to_fill; + u32 nkeep = bh->inreq->length; + u32 nsend; + int rc; + + bh->state = BUF_STATE_EMPTY; /* For the first iteration */ + fsg->common->usb_amount_left = nkeep + fsg->common->residue; + while (fsg->common->usb_amount_left > 0) { + + /* Wait for the next buffer to be free */ + while (bh->state != BUF_STATE_EMPTY) { + rc = sleep_thread(fsg->common); + if (rc) + return rc; + } + + nsend = min(fsg->common->usb_amount_left, FSG_BUFLEN); + memset(bh->buf + nkeep, 0, nsend - nkeep); + bh->inreq->length = nsend; + bh->inreq->zero = 0; + start_transfer(fsg, fsg->bulk_in, bh->inreq, + &bh->inreq_busy, &bh->state); + bh = fsg->common->next_buffhd_to_fill = bh->next; + fsg->common->usb_amount_left -= nsend; + nkeep = 0; + } + return 0; +} + +static int throw_away_data(struct fsg_common *common) +{ + struct fsg_buffhd *bh; + u32 amount; + int rc; + + for (bh = common->next_buffhd_to_drain; + bh->state != BUF_STATE_EMPTY || common->usb_amount_left > 0; + bh = common->next_buffhd_to_drain) { + + /* Throw away the data in a filled buffer */ + if (bh->state == BUF_STATE_FULL) { + smp_rmb(); + bh->state = BUF_STATE_EMPTY; + common->next_buffhd_to_drain = bh->next; + + /* A short packet or an error ends everything */ + if (bh->outreq->actual != bh->outreq->length || + bh->outreq->status != 0) { + raise_exception(common, + FSG_STATE_ABORT_BULK_OUT); + return -EINTR; + } + continue; + } + + /* Try to submit another request if we need one */ + bh = common->next_buffhd_to_fill; + if (bh->state == BUF_STATE_EMPTY + && common->usb_amount_left > 0) { + amount = min(common->usb_amount_left, FSG_BUFLEN); + + /* amount is always divisible by 512, hence by + * the bulk-out maxpacket size */ + bh->outreq->length = amount; + bh->bulk_out_intended_length = amount; + bh->outreq->short_not_ok = 1; + START_TRANSFER_OR(common, bulk_out, bh->outreq, + &bh->outreq_busy, &bh->state) + /* Don't know what to do if + * common->fsg is NULL */ + return -EIO; + common->next_buffhd_to_fill = bh->next; + common->usb_amount_left -= amount; + continue; + } + + /* Otherwise wait for something to happen */ + rc = sleep_thread(common); + if (rc) + return rc; + } + return 0; +} + + +static int finish_reply(struct fsg_common *common) +{ + struct fsg_buffhd *bh = common->next_buffhd_to_fill; + int rc = 0; + + switch (common->data_dir) { + case DATA_DIR_NONE: + break; /* Nothing to send */ + + /* If we don't know whether the host wants to read or write, + * this must be CB or CBI with an unknown command. We mustn't + * try to send or receive any data. So stall both bulk pipes + * if we can and wait for a reset. */ + case DATA_DIR_UNKNOWN: + if (!common->can_stall) { + /* Nothing */ + } else if (fsg_is_set(common)) { + fsg_set_halt(common->fsg, common->fsg->bulk_out); + rc = halt_bulk_in_endpoint(common->fsg); + } else { + /* Don't know what to do if common->fsg is NULL */ + rc = -EIO; + } + break; + + /* All but the last buffer of data must have already been sent */ + case DATA_DIR_TO_HOST: + if (common->data_size == 0) { + /* Nothing to send */ + + /* If there's no residue, simply send the last buffer */ + } else if (common->residue == 0) { + bh->inreq->zero = 0; + START_TRANSFER_OR(common, bulk_in, bh->inreq, + &bh->inreq_busy, &bh->state) + return -EIO; + common->next_buffhd_to_fill = bh->next; + + /* For Bulk-only, if we're allowed to stall then send the + * short packet and halt the bulk-in endpoint. If we can't + * stall, pad out the remaining data with 0's. */ + } else if (common->can_stall) { + bh->inreq->zero = 1; + START_TRANSFER_OR(common, bulk_in, bh->inreq, + &bh->inreq_busy, &bh->state) + /* Don't know what to do if + * common->fsg is NULL */ + rc = -EIO; + common->next_buffhd_to_fill = bh->next; + if (common->fsg) + rc = halt_bulk_in_endpoint(common->fsg); + } else if (fsg_is_set(common)) { + rc = pad_with_zeros(common->fsg); + } else { + /* Don't know what to do if common->fsg is NULL */ + rc = -EIO; + } + break; + + /* We have processed all we want from the data the host has sent. + * There may still be outstanding bulk-out requests. */ + case DATA_DIR_FROM_HOST: + if (common->residue == 0) { + /* Nothing to receive */ + + /* Did the host stop sending unexpectedly early? */ + } else if (common->short_packet_received) { + raise_exception(common, FSG_STATE_ABORT_BULK_OUT); + rc = -EINTR; + + /* We haven't processed all the incoming data. Even though + * we may be allowed to stall, doing so would cause a race. + * The controller may already have ACK'ed all the remaining + * bulk-out packets, in which case the host wouldn't see a + * STALL. Not realizing the endpoint was halted, it wouldn't + * clear the halt -- leading to problems later on. */ +#if 0 + } else if (common->can_stall) { + if (fsg_is_set(common)) + fsg_set_halt(common->fsg, + common->fsg->bulk_out); + raise_exception(common, FSG_STATE_ABORT_BULK_OUT); + rc = -EINTR; +#endif + + /* We can't stall. Read in the excess data and throw it + * all away. */ + } else { + rc = throw_away_data(common); + } + break; + } + return rc; +} + + +static int send_status(struct fsg_common *common) +{ + struct fsg_lun *curlun = common->curlun; + struct fsg_buffhd *bh; + struct bulk_cs_wrap *csw; + int rc; + u8 status = USB_STATUS_PASS; + u32 sd, sdinfo = 0; + + /* Wait for the next buffer to become available */ + bh = common->next_buffhd_to_fill; + while (bh->state != BUF_STATE_EMPTY) { + rc = sleep_thread(common); + if (rc) + return rc; + } + + if (curlun) { + sd = curlun->sense_data; + sdinfo = curlun->sense_data_info; + } else if (common->bad_lun_okay) + sd = SS_NO_SENSE; + else + sd = SS_LOGICAL_UNIT_NOT_SUPPORTED; + + if (common->phase_error) { + DBG(common, "sending phase-error status\n"); + status = USB_STATUS_PHASE_ERROR; + sd = SS_INVALID_COMMAND; + } else if (sd != SS_NO_SENSE) { + DBG(common, "sending command-failure status\n"); + status = USB_STATUS_FAIL; + VDBG(common, " sense data: SK x%02x, ASC x%02x, ASCQ x%02x;" + " info x%x\n", + SK(sd), ASC(sd), ASCQ(sd), sdinfo); + } + + /* Store and send the Bulk-only CSW */ + csw = (void *)bh->buf; + + csw->Signature = cpu_to_le32(USB_BULK_CS_SIG); + csw->Tag = common->tag; + csw->Residue = cpu_to_le32(common->residue); + csw->Status = status; + + bh->inreq->length = USB_BULK_CS_WRAP_LEN; + bh->inreq->zero = 0; + START_TRANSFER_OR(common, bulk_in, bh->inreq, + &bh->inreq_busy, &bh->state) + /* Don't know what to do if common->fsg is NULL */ + return -EIO; + + common->next_buffhd_to_fill = bh->next; + return 0; +} + + +/*-------------------------------------------------------------------------*/ + +/* Check whether the command is properly formed and whether its data size + * and direction agree with the values we already have. */ +static int check_command(struct fsg_common *common, int cmnd_size, + enum data_direction data_dir, unsigned int mask, + int needs_medium, const char *name) +{ + int i; + int lun = common->cmnd[1] >> 5; + static const char dirletter[4] = {'u', 'o', 'i', 'n'}; + char hdlen[20]; + struct fsg_lun *curlun; + + hdlen[0] = 0; + if (common->data_dir != DATA_DIR_UNKNOWN) + sprintf(hdlen, ", H%c=%u", dirletter[(int) common->data_dir], + common->data_size); + VDBG(common, "SCSI command: %s; Dc=%d, D%c=%u; Hc=%d%s\n", + name, cmnd_size, dirletter[(int) data_dir], + common->data_size_from_cmnd, common->cmnd_size, hdlen); + + /* We can't reply at all until we know the correct data direction + * and size. */ + if (common->data_size_from_cmnd == 0) + data_dir = DATA_DIR_NONE; + if (common->data_size < common->data_size_from_cmnd) { + /* Host data size < Device data size is a phase error. + * Carry out the command, but only transfer as much as + * we are allowed. */ + common->data_size_from_cmnd = common->data_size; + common->phase_error = 1; + } + common->residue = common->data_size; + common->usb_amount_left = common->data_size; + + /* Conflicting data directions is a phase error */ + if (common->data_dir != data_dir + && common->data_size_from_cmnd > 0) { + common->phase_error = 1; + return -EINVAL; + } + + /* Verify the length of the command itself */ + if (cmnd_size != common->cmnd_size) { + + /* Special case workaround: There are plenty of buggy SCSI + * implementations. Many have issues with cbw->Length + * field passing a wrong command size. For those cases we + * always try to work around the problem by using the length + * sent by the host side provided it is at least as large + * as the correct command length. + * Examples of such cases would be MS-Windows, which issues + * REQUEST SENSE with cbw->Length == 12 where it should + * be 6, and xbox360 issuing INQUIRY, TEST UNIT READY and + * REQUEST SENSE with cbw->Length == 10 where it should + * be 6 as well. + */ + if (cmnd_size <= common->cmnd_size) { + DBG(common, "%s is buggy! Expected length %d " + "but we got %d\n", name, + cmnd_size, common->cmnd_size); + cmnd_size = common->cmnd_size; + } else { + common->phase_error = 1; + return -EINVAL; + } + } + + /* Check that the LUN values are consistent */ + if (common->lun != lun) + DBG(common, "using LUN %d from CBW, not LUN %d from CDB\n", + common->lun, lun); + + /* Check the LUN */ + if (common->lun >= 0 && common->lun < common->nluns) { + curlun = &common->luns[common->lun]; + common->curlun = curlun; + if (common->cmnd[0] != SC_REQUEST_SENSE) { + curlun->sense_data = SS_NO_SENSE; + curlun->sense_data_info = 0; + curlun->info_valid = 0; + } + } else { + common->curlun = NULL; + curlun = NULL; + common->bad_lun_okay = 0; + + /* INQUIRY and REQUEST SENSE commands are explicitly allowed + * to use unsupported LUNs; all others may not. */ + if (common->cmnd[0] != SC_INQUIRY && + common->cmnd[0] != SC_REQUEST_SENSE) { + DBG(common, "unsupported LUN %d\n", common->lun); + return -EINVAL; + } + } + + /* If a unit attention condition exists, only INQUIRY and + * REQUEST SENSE commands are allowed; anything else must fail. */ + if (curlun && curlun->unit_attention_data != SS_NO_SENSE && + common->cmnd[0] != SC_INQUIRY && + common->cmnd[0] != SC_REQUEST_SENSE) { + curlun->sense_data = curlun->unit_attention_data; + curlun->unit_attention_data = SS_NO_SENSE; + return -EINVAL; + } + + /* Check that only command bytes listed in the mask are non-zero */ + common->cmnd[1] &= 0x1f; /* Mask away the LUN */ + for (i = 1; i < cmnd_size; ++i) { + if (common->cmnd[i] && !(mask & (1 << i))) { + if (curlun) + curlun->sense_data = SS_INVALID_FIELD_IN_CDB; + return -EINVAL; + } + } + + /* If the medium isn't mounted and the command needs to access + * it, return an error. */ + if (curlun && !fsg_lun_is_open(curlun) && needs_medium) { + curlun->sense_data = SS_MEDIUM_NOT_PRESENT; + return -EINVAL; + } + + return 0; +} + + +static int do_scsi_command(struct fsg_common *common) +{ + struct fsg_buffhd *bh; + int rc; + int reply = -EINVAL; + int i; + static char unknown[16]; + + dump_cdb(common); + + /* Wait for the next buffer to become available for data or status */ + bh = common->next_buffhd_to_fill; + common->next_buffhd_to_drain = bh; + while (bh->state != BUF_STATE_EMPTY) { + rc = sleep_thread(common); + if (rc) + return rc; + } + common->phase_error = 0; + common->short_packet_received = 0; + + down_read(&common->filesem); /* We're using the backing file */ + switch (common->cmnd[0]) { + + case SC_INQUIRY: + common->data_size_from_cmnd = common->cmnd[4]; + reply = check_command(common, 6, DATA_DIR_TO_HOST, + (1<<4), 0, + "INQUIRY"); + if (reply == 0) + reply = do_inquiry(common, bh); + break; + + case SC_MODE_SELECT_6: + common->data_size_from_cmnd = common->cmnd[4]; + reply = check_command(common, 6, DATA_DIR_FROM_HOST, + (1<<1) | (1<<4), 0, + "MODE SELECT(6)"); + if (reply == 0) + reply = do_mode_select(common, bh); + break; + + case SC_MODE_SELECT_10: + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]); + reply = check_command(common, 10, DATA_DIR_FROM_HOST, + (1<<1) | (3<<7), 0, + "MODE SELECT(10)"); + if (reply == 0) + reply = do_mode_select(common, bh); + break; + + case SC_MODE_SENSE_6: + common->data_size_from_cmnd = common->cmnd[4]; + reply = check_command(common, 6, DATA_DIR_TO_HOST, + (1<<1) | (1<<2) | (1<<4), 0, + "MODE SENSE(6)"); + if (reply == 0) + reply = do_mode_sense(common, bh); + break; + + case SC_MODE_SENSE_10: + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]); + reply = check_command(common, 10, DATA_DIR_TO_HOST, + (1<<1) | (1<<2) | (3<<7), 0, + "MODE SENSE(10)"); + if (reply == 0) + reply = do_mode_sense(common, bh); + break; + + case SC_PREVENT_ALLOW_MEDIUM_REMOVAL: + common->data_size_from_cmnd = 0; + reply = check_command(common, 6, DATA_DIR_NONE, + (1<<4), 0, + "PREVENT-ALLOW MEDIUM REMOVAL"); + if (reply == 0) + reply = do_prevent_allow(common); + break; + + case SC_READ_6: + i = common->cmnd[4]; + common->data_size_from_cmnd = (i == 0 ? 256 : i) << 9; + reply = check_command(common, 6, DATA_DIR_TO_HOST, + (7<<1) | (1<<4), 1, + "READ(6)"); + if (reply == 0) + reply = do_read(common); + break; + + case SC_READ_10: + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]) << 9; + reply = check_command(common, 10, DATA_DIR_TO_HOST, + (1<<1) | (0xf<<2) | (3<<7), 1, + "READ(10)"); + if (reply == 0) + reply = do_read(common); + break; + + case SC_READ_12: + common->data_size_from_cmnd = + get_unaligned_be32(&common->cmnd[6]) << 9; + reply = check_command(common, 12, DATA_DIR_TO_HOST, + (1<<1) | (0xf<<2) | (0xf<<6), 1, + "READ(12)"); + if (reply == 0) + reply = do_read(common); + break; + + case SC_READ_CAPACITY: + common->data_size_from_cmnd = 8; + reply = check_command(common, 10, DATA_DIR_TO_HOST, + (0xf<<2) | (1<<8), 1, + "READ CAPACITY"); + if (reply == 0) + reply = do_read_capacity(common, bh); + break; + + case SC_READ_HEADER: + if (!common->curlun || !common->curlun->cdrom) + goto unknown_cmnd; + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]); + reply = check_command(common, 10, DATA_DIR_TO_HOST, + (3<<7) | (0x1f<<1), 1, + "READ HEADER"); + if (reply == 0) + reply = do_read_header(common, bh); + break; + + case SC_READ_TOC: + if (!common->curlun || !common->curlun->cdrom) + goto unknown_cmnd; + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]); + reply = check_command(common, 10, DATA_DIR_TO_HOST, + (7<<6) | (1<<1), 1, + "READ TOC"); + if (reply == 0) + reply = do_read_toc(common, bh); + break; + + case SC_READ_FORMAT_CAPACITIES: + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]); + reply = check_command(common, 10, DATA_DIR_TO_HOST, + (3<<7), 1, + "READ FORMAT CAPACITIES"); + if (reply == 0) + reply = do_read_format_capacities(common, bh); + break; + + case SC_REQUEST_SENSE: + common->data_size_from_cmnd = common->cmnd[4]; + reply = check_command(common, 6, DATA_DIR_TO_HOST, + (1<<4), 0, + "REQUEST SENSE"); + if (reply == 0) + reply = do_request_sense(common, bh); + break; + + case SC_START_STOP_UNIT: + common->data_size_from_cmnd = 0; + reply = check_command(common, 6, DATA_DIR_NONE, + (1<<1) | (1<<4), 0, + "START-STOP UNIT"); + if (reply == 0) + reply = do_start_stop(common); + break; + + case SC_SYNCHRONIZE_CACHE: + common->data_size_from_cmnd = 0; + reply = check_command(common, 10, DATA_DIR_NONE, + (0xf<<2) | (3<<7), 1, + "SYNCHRONIZE CACHE"); + if (reply == 0) + reply = do_synchronize_cache(common); + break; + + case SC_TEST_UNIT_READY: + common->data_size_from_cmnd = 0; + reply = check_command(common, 6, DATA_DIR_NONE, + 0, 1, + "TEST UNIT READY"); + break; + + /* Although optional, this command is used by MS-Windows. We + * support a minimal version: BytChk must be 0. */ + case SC_VERIFY: + common->data_size_from_cmnd = 0; + reply = check_command(common, 10, DATA_DIR_NONE, + (1<<1) | (0xf<<2) | (3<<7), 1, + "VERIFY"); + if (reply == 0) + reply = do_verify(common); + break; + + case SC_WRITE_6: + i = common->cmnd[4]; + common->data_size_from_cmnd = (i == 0 ? 256 : i) << 9; + reply = check_command(common, 6, DATA_DIR_FROM_HOST, + (7<<1) | (1<<4), 1, + "WRITE(6)"); + if (reply == 0) + reply = do_write(common); + break; + + case SC_WRITE_10: + common->data_size_from_cmnd = + get_unaligned_be16(&common->cmnd[7]) << 9; + reply = check_command(common, 10, DATA_DIR_FROM_HOST, + (1<<1) | (0xf<<2) | (3<<7), 1, + "WRITE(10)"); + if (reply == 0) + reply = do_write(common); + break; + + case SC_WRITE_12: + common->data_size_from_cmnd = + get_unaligned_be32(&common->cmnd[6]) << 9; + reply = check_command(common, 12, DATA_DIR_FROM_HOST, + (1<<1) | (0xf<<2) | (0xf<<6), 1, + "WRITE(12)"); + if (reply == 0) + reply = do_write(common); + break; + + /* Some mandatory commands that we recognize but don't implement. + * They don't mean much in this setting. It's left as an exercise + * for anyone interested to implement RESERVE and RELEASE in terms + * of Posix locks. */ + case SC_FORMAT_UNIT: + case SC_RELEASE: + case SC_RESERVE: + case SC_SEND_DIAGNOSTIC: + /* Fall through */ + + default: +unknown_cmnd: + common->data_size_from_cmnd = 0; + sprintf(unknown, "Unknown x%02x", common->cmnd[0]); + reply = check_command(common, common->cmnd_size, + DATA_DIR_UNKNOWN, 0xff, 0, unknown); + if (reply == 0) { + common->curlun->sense_data = SS_INVALID_COMMAND; + reply = -EINVAL; + } + break; + } + up_read(&common->filesem); + + if (reply == -EINTR || signal_pending(current)) + return -EINTR; + + /* Set up the single reply buffer for finish_reply() */ + if (reply == -EINVAL) + reply = 0; /* Error reply length */ + if (reply >= 0 && common->data_dir == DATA_DIR_TO_HOST) { + reply = min((u32) reply, common->data_size_from_cmnd); + bh->inreq->length = reply; + bh->state = BUF_STATE_FULL; + common->residue -= reply; + } /* Otherwise it's already set */ + + return 0; +} + + +/*-------------------------------------------------------------------------*/ + +static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) +{ + struct usb_request *req = bh->outreq; + struct fsg_bulk_cb_wrap *cbw = req->buf; + struct fsg_common *common = fsg->common; + + /* Was this a real packet? Should it be ignored? */ + if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags)) + return -EINVAL; + + /* Is the CBW valid? */ + if (req->actual != USB_BULK_CB_WRAP_LEN || + cbw->Signature != cpu_to_le32( + USB_BULK_CB_SIG)) { + DBG(fsg, "invalid CBW: len %u sig 0x%x\n", + req->actual, + le32_to_cpu(cbw->Signature)); + + /* The Bulk-only spec says we MUST stall the IN endpoint + * (6.6.1), so it's unavoidable. It also says we must + * retain this state until the next reset, but there's + * no way to tell the controller driver it should ignore + * Clear-Feature(HALT) requests. + * + * We aren't required to halt the OUT endpoint; instead + * we can simply accept and discard any data received + * until the next reset. */ + wedge_bulk_in_endpoint(fsg); + set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); + return -EINVAL; + } + + /* Is the CBW meaningful? */ + if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG || + cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) { + DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, " + "cmdlen %u\n", + cbw->Lun, cbw->Flags, cbw->Length); + + /* We can do anything we want here, so let's stall the + * bulk pipes if we are allowed to. */ + if (common->can_stall) { + fsg_set_halt(fsg, fsg->bulk_out); + halt_bulk_in_endpoint(fsg); + } + return -EINVAL; + } + + /* Save the command for later */ + common->cmnd_size = cbw->Length; + memcpy(common->cmnd, cbw->CDB, common->cmnd_size); + if (cbw->Flags & USB_BULK_IN_FLAG) + common->data_dir = DATA_DIR_TO_HOST; + else + common->data_dir = DATA_DIR_FROM_HOST; + common->data_size = le32_to_cpu(cbw->DataTransferLength); + if (common->data_size == 0) + common->data_dir = DATA_DIR_NONE; + common->lun = cbw->Lun; + common->tag = cbw->Tag; + return 0; +} + + +static int get_next_command(struct fsg_common *common) +{ + struct fsg_buffhd *bh; + int rc = 0; + + /* Wait for the next buffer to become available */ + bh = common->next_buffhd_to_fill; + while (bh->state != BUF_STATE_EMPTY) { + rc = sleep_thread(common); + if (rc) + return rc; + } + + /* Queue a request to read a Bulk-only CBW */ + set_bulk_out_req_length(common, bh, USB_BULK_CB_WRAP_LEN); + bh->outreq->short_not_ok = 1; + START_TRANSFER_OR(common, bulk_out, bh->outreq, + &bh->outreq_busy, &bh->state) + /* Don't know what to do if common->fsg is NULL */ + return -EIO; + + /* We will drain the buffer in software, which means we + * can reuse it for the next filling. No need to advance + * next_buffhd_to_fill. */ + + /* Wait for the CBW to arrive */ + while (bh->state != BUF_STATE_FULL) { + rc = sleep_thread(common); + if (rc) + return rc; + } + smp_rmb(); + rc = fsg_is_set(common) ? received_cbw(common->fsg, bh) : -EIO; + bh->state = BUF_STATE_EMPTY; + + return rc; +} + + +/*-------------------------------------------------------------------------*/ + +static int enable_endpoint(struct fsg_common *common, struct usb_ep *ep, + const struct usb_endpoint_descriptor *d) +{ + int rc; + + ep->driver_data = common; + rc = usb_ep_enable(ep, d); + if (rc) + ERROR(common, "can't enable %s, result %d\n", ep->name, rc); + return rc; +} + +static int alloc_request(struct fsg_common *common, struct usb_ep *ep, + struct usb_request **preq) +{ + *preq = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (*preq) + return 0; + ERROR(common, "can't allocate request for %s\n", ep->name); + return -ENOMEM; +} + +/* + * Reset interface setting and re-init endpoint state (toggle etc). + * Call with altsetting < 0 to disable the interface. The only other + * available altsetting is 0, which enables the interface. + */ +static int do_set_interface(struct fsg_common *common, int altsetting) +{ + int rc = 0; + int i; + const struct usb_endpoint_descriptor *d; + + if (common->running) + DBG(common, "reset interface\n"); + +reset: + /* Deallocate the requests */ + if (common->prev_fsg) { + struct fsg_dev *fsg = common->prev_fsg; + + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { + struct fsg_buffhd *bh = &common->buffhds[i]; + + if (bh->inreq) { + usb_ep_free_request(fsg->bulk_in, bh->inreq); + bh->inreq = NULL; + } + if (bh->outreq) { + usb_ep_free_request(fsg->bulk_out, bh->outreq); + bh->outreq = NULL; + } + } + + /* Disable the endpoints */ + if (fsg->bulk_in_enabled) { + usb_ep_disable(fsg->bulk_in); + fsg->bulk_in_enabled = 0; + } + if (fsg->bulk_out_enabled) { + usb_ep_disable(fsg->bulk_out); + fsg->bulk_out_enabled = 0; + } + + common->prev_fsg = 0; + } + + common->running = 0; + if (altsetting < 0 || rc != 0) + return rc; + + DBG(common, "set interface %d\n", altsetting); + + if (fsg_is_set(common)) { + struct fsg_dev *fsg = common->fsg; + common->prev_fsg = common->fsg; + + /* Enable the endpoints */ + d = fsg_ep_desc(common->gadget, + &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc); + rc = enable_endpoint(common, fsg->bulk_in, d); + if (rc) + goto reset; + fsg->bulk_in_enabled = 1; + + d = fsg_ep_desc(common->gadget, + &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc); + rc = enable_endpoint(common, fsg->bulk_out, d); + if (rc) + goto reset; + fsg->bulk_out_enabled = 1; + common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize); + clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); + + /* Allocate the requests */ + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { + struct fsg_buffhd *bh = &common->buffhds[i]; + + rc = alloc_request(common, fsg->bulk_in, &bh->inreq); + if (rc) + goto reset; + rc = alloc_request(common, fsg->bulk_out, &bh->outreq); + if (rc) + goto reset; + bh->inreq->buf = bh->outreq->buf = bh->buf; + bh->inreq->context = bh->outreq->context = bh; + bh->inreq->complete = bulk_in_complete; + bh->outreq->complete = bulk_out_complete; + } + + common->running = 1; + for (i = 0; i < common->nluns; ++i) + common->luns[i].unit_attention_data = SS_RESET_OCCURRED; + return rc; + } else { + return -EIO; + } +} + + +/* + * Change our operational configuration. This code must agree with the code + * that returns config descriptors, and with interface altsetting code. + * + * It's also responsible for power management interactions. Some + * configurations might not work with our current power sources. + * For now we just assume the gadget is always self-powered. + */ +static int do_set_config(struct fsg_common *common, u8 new_config) +{ + int rc = 0; + + /* Disable the single interface */ + if (common->config != 0) { + DBG(common, "reset config\n"); + common->config = 0; + rc = do_set_interface(common, -1); + } + + /* Enable the interface */ + if (new_config != 0) { + common->config = new_config; + rc = do_set_interface(common, 0); + if (rc != 0) + common->config = 0; /* Reset on errors */ + } + return rc; +} + + +/****************************** ALT CONFIGS ******************************/ + + +static int fsg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct fsg_dev *fsg = fsg_from_func(f); + fsg->common->prev_fsg = fsg->common->fsg; + fsg->common->fsg = fsg; + fsg->common->new_config = 1; + raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE); + return 0; +} + +static void fsg_disable(struct usb_function *f) +{ + struct fsg_dev *fsg = fsg_from_func(f); + fsg->common->prev_fsg = fsg->common->fsg; + fsg->common->fsg = fsg; + fsg->common->new_config = 0; + raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE); +} + + +/*-------------------------------------------------------------------------*/ + +static void handle_exception(struct fsg_common *common) +{ + siginfo_t info; + int sig; + int i; + struct fsg_buffhd *bh; + enum fsg_state old_state; + u8 new_config; + struct fsg_lun *curlun; + unsigned int exception_req_tag; + int rc; + + /* Clear the existing signals. Anything but SIGUSR1 is converted + * into a high-priority EXIT exception. */ + for (;;) { + sig = dequeue_signal_lock(current, ¤t->blocked, &info); + if (!sig) + break; + if (sig != SIGUSR1) { + if (common->state < FSG_STATE_EXIT) + DBG(common, "Main thread exiting on signal\n"); + raise_exception(common, FSG_STATE_EXIT); + } + } + + /* Cancel all the pending transfers */ + if (fsg_is_set(common)) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { + bh = &common->buffhds[i]; + if (bh->inreq_busy) + usb_ep_dequeue(common->fsg->bulk_in, bh->inreq); + if (bh->outreq_busy) + usb_ep_dequeue(common->fsg->bulk_out, + bh->outreq); + } + + /* Wait until everything is idle */ + for (;;) { + int num_active = 0; + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { + bh = &common->buffhds[i]; + num_active += bh->inreq_busy + bh->outreq_busy; + } + if (num_active == 0) + break; + if (sleep_thread(common)) + return; + } + + /* Clear out the controller's fifos */ + if (common->fsg->bulk_in_enabled) + usb_ep_fifo_flush(common->fsg->bulk_in); + if (common->fsg->bulk_out_enabled) + usb_ep_fifo_flush(common->fsg->bulk_out); + } + + /* Reset the I/O buffer states and pointers, the SCSI + * state, and the exception. Then invoke the handler. */ + spin_lock_irq(&common->lock); + + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { + bh = &common->buffhds[i]; + bh->state = BUF_STATE_EMPTY; + } + common->next_buffhd_to_fill = &common->buffhds[0]; + common->next_buffhd_to_drain = &common->buffhds[0]; + exception_req_tag = common->exception_req_tag; + new_config = common->new_config; + old_state = common->state; + + if (old_state == FSG_STATE_ABORT_BULK_OUT) + common->state = FSG_STATE_STATUS_PHASE; + else { + for (i = 0; i < common->nluns; ++i) { + curlun = &common->luns[i]; + curlun->prevent_medium_removal = 0; + curlun->sense_data = SS_NO_SENSE; + curlun->unit_attention_data = SS_NO_SENSE; + curlun->sense_data_info = 0; + curlun->info_valid = 0; + } + common->state = FSG_STATE_IDLE; + } + spin_unlock_irq(&common->lock); + + /* Carry out any extra actions required for the exception */ + switch (old_state) { + case FSG_STATE_ABORT_BULK_OUT: + send_status(common); + spin_lock_irq(&common->lock); + if (common->state == FSG_STATE_STATUS_PHASE) + common->state = FSG_STATE_IDLE; + spin_unlock_irq(&common->lock); + break; + + case FSG_STATE_RESET: + /* In case we were forced against our will to halt a + * bulk endpoint, clear the halt now. (The SuperH UDC + * requires this.) */ + if (!fsg_is_set(common)) + break; + if (test_and_clear_bit(IGNORE_BULK_OUT, + &common->fsg->atomic_bitflags)) + usb_ep_clear_halt(common->fsg->bulk_in); + + if (common->ep0_req_tag == exception_req_tag) + ep0_queue(common); /* Complete the status stage */ + + /* Technically this should go here, but it would only be + * a waste of time. Ditto for the INTERFACE_CHANGE and + * CONFIG_CHANGE cases. */ + /* for (i = 0; i < common->nluns; ++i) */ + /* common->luns[i].unit_attention_data = */ + /* SS_RESET_OCCURRED; */ + break; + + case FSG_STATE_CONFIG_CHANGE: + rc = do_set_config(common, new_config); + if (common->ep0_req_tag != exception_req_tag) + break; + if (rc != 0) { /* STALL on errors */ + DBG(common, "ep0 set halt\n"); + usb_ep_set_halt(common->ep0); + } else { /* Complete the status stage */ + ep0_queue(common); + } + break; + + case FSG_STATE_EXIT: + case FSG_STATE_TERMINATED: + do_set_config(common, 0); /* Free resources */ + spin_lock_irq(&common->lock); + common->state = FSG_STATE_TERMINATED; /* Stop the thread */ + spin_unlock_irq(&common->lock); + break; + + case FSG_STATE_INTERFACE_CHANGE: + case FSG_STATE_DISCONNECT: + case FSG_STATE_COMMAND_PHASE: + case FSG_STATE_DATA_PHASE: + case FSG_STATE_STATUS_PHASE: + case FSG_STATE_IDLE: + break; + } +} + + +/*-------------------------------------------------------------------------*/ + +static int fsg_main_thread(void *common_) +{ + struct fsg_common *common = common_; + + /* Allow the thread to be killed by a signal, but set the signal mask + * to block everything but INT, TERM, KILL, and USR1. */ + allow_signal(SIGINT); + allow_signal(SIGTERM); + allow_signal(SIGKILL); + allow_signal(SIGUSR1); + + /* Allow the thread to be frozen */ + set_freezable(); + + /* Arrange for userspace references to be interpreted as kernel + * pointers. That way we can pass a kernel pointer to a routine + * that expects a __user pointer and it will work okay. */ + set_fs(get_ds()); + + /* The main loop */ + while (common->state != FSG_STATE_TERMINATED) { + if (exception_in_progress(common) || signal_pending(current)) { + handle_exception(common); + continue; + } + + if (!common->running) { + sleep_thread(common); + continue; + } + + if (get_next_command(common)) + continue; + + spin_lock_irq(&common->lock); + if (!exception_in_progress(common)) + common->state = FSG_STATE_DATA_PHASE; + spin_unlock_irq(&common->lock); + + if (do_scsi_command(common) || finish_reply(common)) + continue; + + spin_lock_irq(&common->lock); + if (!exception_in_progress(common)) + common->state = FSG_STATE_STATUS_PHASE; + spin_unlock_irq(&common->lock); + + if (send_status(common)) + continue; + + spin_lock_irq(&common->lock); + if (!exception_in_progress(common)) + common->state = FSG_STATE_IDLE; + spin_unlock_irq(&common->lock); + } + + spin_lock_irq(&common->lock); + common->thread_task = NULL; + spin_unlock_irq(&common->lock); + + if (common->thread_exits) + common->thread_exits(common); + + /* Let the unbind and cleanup routines know the thread has exited */ + complete_and_exit(&common->thread_notifier, 0); +} + + +/*************************** DEVICE ATTRIBUTES ***************************/ + +/* Write permission is checked per LUN in store_*() functions. */ +static DEVICE_ATTR(ro, 0644, fsg_show_ro, fsg_store_ro); +static DEVICE_ATTR(file, 0644, fsg_show_file, fsg_store_file); + + +/****************************** FSG COMMON ******************************/ + +static void fsg_common_release(struct kref *ref); + +static void fsg_lun_release(struct device *dev) +{ + /* Nothing needs to be done */ +} + +static inline void fsg_common_get(struct fsg_common *common) +{ + kref_get(&common->ref); +} + +static inline void fsg_common_put(struct fsg_common *common) +{ + kref_put(&common->ref, fsg_common_release); +} + + +static struct fsg_common *fsg_common_init(struct fsg_common *common, + struct usb_composite_dev *cdev, + struct fsg_config *cfg) +{ + struct usb_gadget *gadget = cdev->gadget; + struct fsg_buffhd *bh; + struct fsg_lun *curlun; + struct fsg_lun_config *lcfg; + int nluns, i, rc; + char *pathbuf; + + /* Find out how many LUNs there should be */ + nluns = cfg->nluns; + if (nluns < 1 || nluns > FSG_MAX_LUNS) { + dev_err(&gadget->dev, "invalid number of LUNs: %u\n", nluns); + return ERR_PTR(-EINVAL); + } + + /* Allocate? */ + if (!common) { + common = kzalloc(sizeof *common, GFP_KERNEL); + if (!common) + return ERR_PTR(-ENOMEM); + common->free_storage_on_release = 1; + } else { + memset(common, 0, sizeof common); + common->free_storage_on_release = 0; + } + + common->private_data = cfg->private_data; + + common->gadget = gadget; + common->ep0 = gadget->ep0; + common->ep0req = cdev->req; + + /* Maybe allocate device-global string IDs, and patch descriptors */ + if (fsg_strings[FSG_STRING_INTERFACE].id == 0) { + rc = usb_string_id(cdev); + if (rc < 0) { + kfree(common); + return ERR_PTR(rc); + } + fsg_strings[FSG_STRING_INTERFACE].id = rc; + fsg_intf_desc.iInterface = rc; + } + + /* Create the LUNs, open their backing files, and register the + * LUN devices in sysfs. */ + curlun = kzalloc(nluns * sizeof *curlun, GFP_KERNEL); + if (!curlun) { + kfree(common); + return ERR_PTR(-ENOMEM); + } + common->luns = curlun; + + init_rwsem(&common->filesem); + + for (i = 0, lcfg = cfg->luns; i < nluns; ++i, ++curlun, ++lcfg) { + curlun->cdrom = !!lcfg->cdrom; + curlun->ro = lcfg->cdrom || lcfg->ro; + curlun->removable = lcfg->removable; + curlun->dev.release = fsg_lun_release; + curlun->dev.parent = &gadget->dev; + /* curlun->dev.driver = &fsg_driver.driver; XXX */ + dev_set_drvdata(&curlun->dev, &common->filesem); + dev_set_name(&curlun->dev, + cfg->lun_name_format + ? cfg->lun_name_format + : "lun%d", + i); + + rc = device_register(&curlun->dev); + if (rc) { + INFO(common, "failed to register LUN%d: %d\n", i, rc); + common->nluns = i; + goto error_release; + } + + rc = device_create_file(&curlun->dev, &dev_attr_ro); + if (rc) + goto error_luns; + rc = device_create_file(&curlun->dev, &dev_attr_file); + if (rc) + goto error_luns; + + if (lcfg->filename) { + rc = fsg_lun_open(curlun, lcfg->filename); + if (rc) + goto error_luns; + } else if (!curlun->removable) { + ERROR(common, "no file given for LUN%d\n", i); + rc = -EINVAL; + goto error_luns; + } + } + common->nluns = nluns; + + + /* Data buffers cyclic list */ + /* Buffers in buffhds are static -- no need for additional + * allocation. */ + bh = common->buffhds; + i = FSG_NUM_BUFFERS - 1; + do { + bh->next = bh + 1; + } while (++bh, --i); + bh->next = common->buffhds; + + + /* Prepare inquiryString */ + if (cfg->release != 0xffff) { + i = cfg->release; + } else { + /* The sa1100 controller is not supported */ + i = gadget_is_sa1100(gadget) + ? -1 + : usb_gadget_controller_number(gadget); + if (i >= 0) { + i = 0x0300 + i; + } else { + WARNING(common, "controller '%s' not recognized\n", + gadget->name); + i = 0x0399; + } + } +#define OR(x, y) ((x) ? (x) : (y)) + snprintf(common->inquiry_string, sizeof common->inquiry_string, + "%-8s%-16s%04x", + OR(cfg->vendor_name, "Linux "), + /* Assume product name dependent on the first LUN */ + OR(cfg->product_name, common->luns->cdrom + ? "File-Stor Gadget" + : "File-CD Gadget "), + i); + + + /* Some peripheral controllers are known not to be able to + * halt bulk endpoints correctly. If one of them is present, + * disable stalls. + */ + common->can_stall = cfg->can_stall && + !(gadget_is_sh(common->gadget) || + gadget_is_at91(common->gadget)); + + + spin_lock_init(&common->lock); + kref_init(&common->ref); + + + /* Tell the thread to start working */ + common->thread_exits = cfg->thread_exits; + common->thread_task = + kthread_create(fsg_main_thread, common, + OR(cfg->thread_name, "file-storage")); + if (IS_ERR(common->thread_task)) { + rc = PTR_ERR(common->thread_task); + goto error_release; + } + init_completion(&common->thread_notifier); +#undef OR + + + /* Information */ + INFO(common, FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n"); + INFO(common, "Number of LUNs=%d\n", common->nluns); + + pathbuf = kmalloc(PATH_MAX, GFP_KERNEL); + for (i = 0, nluns = common->nluns, curlun = common->luns; + i < nluns; + ++curlun, ++i) { + char *p = "(no medium)"; + if (fsg_lun_is_open(curlun)) { + p = "(error)"; + if (pathbuf) { + p = d_path(&curlun->filp->f_path, + pathbuf, PATH_MAX); + if (IS_ERR(p)) + p = "(error)"; + } + } + LINFO(curlun, "LUN: %s%s%sfile: %s\n", + curlun->removable ? "removable " : "", + curlun->ro ? "read only " : "", + curlun->cdrom ? "CD-ROM " : "", + p); + } + kfree(pathbuf); + + DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task)); + + wake_up_process(common->thread_task); + + return common; + + +error_luns: + common->nluns = i + 1; +error_release: + common->state = FSG_STATE_TERMINATED; /* The thread is dead */ + /* Call fsg_common_release() directly, ref might be not + * initialised */ + fsg_common_release(&common->ref); + complete(&common->thread_notifier); + return ERR_PTR(rc); +} + + +static void fsg_common_release(struct kref *ref) +{ + struct fsg_common *common = + container_of(ref, struct fsg_common, ref); + unsigned i = common->nluns; + struct fsg_lun *lun = common->luns; + + /* If the thread isn't already dead, tell it to exit now */ + if (common->state != FSG_STATE_TERMINATED) { + raise_exception(common, FSG_STATE_EXIT); + wait_for_completion(&common->thread_notifier); + + /* The cleanup routine waits for this completion also */ + complete(&common->thread_notifier); + } + + /* Beware tempting for -> do-while optimization: when in error + * recovery nluns may be zero. */ + + for (; i; --i, ++lun) { + device_remove_file(&lun->dev, &dev_attr_ro); + device_remove_file(&lun->dev, &dev_attr_file); + fsg_lun_close(lun); + device_unregister(&lun->dev); + } + + kfree(common->luns); + if (common->free_storage_on_release) + kfree(common); +} + + +/*-------------------------------------------------------------------------*/ + + +static void fsg_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct fsg_dev *fsg = fsg_from_func(f); + + DBG(fsg, "unbind\n"); + fsg_common_put(fsg->common); + kfree(fsg); +} + + +static int fsg_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct fsg_dev *fsg = fsg_from_func(f); + struct usb_gadget *gadget = c->cdev->gadget; + int rc; + int i; + struct usb_ep *ep; + + fsg->gadget = gadget; + + /* New interface */ + i = usb_interface_id(c, f); + if (i < 0) + return i; + fsg_intf_desc.bInterfaceNumber = i; + fsg->interface_number = i; + + /* Find all the endpoints we will use */ + ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc); + if (!ep) + goto autoconf_fail; + ep->driver_data = fsg->common; /* claim the endpoint */ + fsg->bulk_in = ep; + + ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc); + if (!ep) + goto autoconf_fail; + ep->driver_data = fsg->common; /* claim the endpoint */ + fsg->bulk_out = ep; + + if (gadget_is_dualspeed(gadget)) { + /* Assume endpoint addresses are the same for both speeds */ + fsg_hs_bulk_in_desc.bEndpointAddress = + fsg_fs_bulk_in_desc.bEndpointAddress; + fsg_hs_bulk_out_desc.bEndpointAddress = + fsg_fs_bulk_out_desc.bEndpointAddress; + f->hs_descriptors = fsg_hs_function; + } + + return 0; + +autoconf_fail: + ERROR(fsg, "unable to autoconfigure all endpoints\n"); + rc = -ENOTSUPP; + fsg_unbind(c, f); + return rc; +} + + +/****************************** ADD FUNCTION ******************************/ + +static struct usb_gadget_strings *fsg_strings_array[] = { + &fsg_stringtab, + NULL, +}; + +static int fsg_add(struct usb_composite_dev *cdev, + struct usb_configuration *c, + struct fsg_common *common) +{ + struct fsg_dev *fsg; + int rc; + + fsg = kzalloc(sizeof *fsg, GFP_KERNEL); + if (unlikely(!fsg)) + return -ENOMEM; + + fsg->function.name = FSG_DRIVER_DESC; + fsg->function.strings = fsg_strings_array; + fsg->function.descriptors = fsg_fs_function; + fsg->function.bind = fsg_bind; + fsg->function.unbind = fsg_unbind; + fsg->function.setup = fsg_setup; + fsg->function.set_alt = fsg_set_alt; + fsg->function.disable = fsg_disable; + + fsg->common = common; + /* Our caller holds a reference to common structure so we + * don't have to be worry about it being freed until we return + * from this function. So instead of incrementing counter now + * and decrement in error recovery we increment it only when + * call to usb_add_function() was successful. */ + + rc = usb_add_function(c, &fsg->function); + + if (likely(rc == 0)) + fsg_common_get(fsg->common); + else + kfree(fsg); + + return rc; +} + + + +/************************* Module parameters *************************/ + + +struct fsg_module_parameters { + char *file[FSG_MAX_LUNS]; + int ro[FSG_MAX_LUNS]; + int removable[FSG_MAX_LUNS]; + int cdrom[FSG_MAX_LUNS]; + + unsigned int file_count, ro_count, removable_count, cdrom_count; + unsigned int luns; /* nluns */ + int stall; /* can_stall */ +}; + + +#define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ + module_param_array_named(prefix ## name, params.name, type, \ + &prefix ## params.name ## _count, \ + S_IRUGO); \ + MODULE_PARM_DESC(prefix ## name, desc) + +#define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \ + module_param_named(prefix ## name, params.name, type, \ + S_IRUGO); \ + MODULE_PARM_DESC(prefix ## name, desc) + +#define FSG_MODULE_PARAMETERS(prefix, params) \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \ + "names of backing files or devices"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \ + "true to force read-only"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \ + "true to simulate removable media"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \ + "true to simulate CD-ROM instead of disk"); \ + _FSG_MODULE_PARAM(prefix, params, luns, uint, \ + "number of LUNs"); \ + _FSG_MODULE_PARAM(prefix, params, stall, bool, \ + "false to prevent bulk stalls") + + +static void +fsg_config_from_params(struct fsg_config *cfg, + const struct fsg_module_parameters *params) +{ + struct fsg_lun_config *lun; + unsigned i; + + /* Configure LUNs */ + cfg->nluns = + min(params->luns ?: (params->file_count ?: 1u), + (unsigned)FSG_MAX_LUNS); + for (i = 0, lun = cfg->luns; i < cfg->nluns; ++i, ++lun) { + lun->ro = !!params->ro[i]; + lun->cdrom = !!params->cdrom[i]; + lun->removable = /* Removable by default */ + params->removable_count <= i || params->removable[i]; + lun->filename = + params->file_count > i && params->file[i][0] + ? params->file[i] + : 0; + } + + /* Let MSF use defaults */ + cfg->lun_name_format = 0; + cfg->thread_name = 0; + cfg->vendor_name = 0; + cfg->product_name = 0; + cfg->release = 0xffff; + + cfg->thread_exits = 0; + cfg->private_data = 0; + + /* Finalise */ + cfg->can_stall = params->stall; +} + +static inline struct fsg_common * +fsg_common_from_params(struct fsg_common *common, + struct usb_composite_dev *cdev, + const struct fsg_module_parameters *params) + __attribute__((unused)); +static inline struct fsg_common * +fsg_common_from_params(struct fsg_common *common, + struct usb_composite_dev *cdev, + const struct fsg_module_parameters *params) +{ + struct fsg_config cfg; + fsg_config_from_params(&cfg, params); + return fsg_common_init(common, cdev, &cfg); +} + diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index c9966cc07d3a..95dae4c1ea40 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -4,6 +4,8 @@ * Copyright (C) 2003-2005,2008 David Brownell * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger * Copyright (C) 2008 Nokia Corporation + * Copyright (C) 2009 Samsung Electronics + * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -149,8 +151,8 @@ static struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor __initdata = { .bDataInterface = 0x01, }; -static struct usb_cdc_acm_descriptor acm_descriptor __initdata = { - .bLength = sizeof acm_descriptor, +static struct usb_cdc_acm_descriptor rndis_acm_descriptor __initdata = { + .bLength = sizeof rndis_acm_descriptor, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = USB_CDC_ACM_TYPE, @@ -179,6 +181,20 @@ static struct usb_interface_descriptor rndis_data_intf __initdata = { /* .iInterface = DYNAMIC */ }; + +static struct usb_interface_assoc_descriptor +rndis_iad_descriptor = { + .bLength = sizeof rndis_iad_descriptor, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + + .bFirstInterface = 0, /* XXX, hardcoded */ + .bInterfaceCount = 2, // control + data + .bFunctionClass = USB_CLASS_COMM, + .bFunctionSubClass = USB_CDC_SUBCLASS_ETHERNET, + .bFunctionProtocol = USB_CDC_PROTO_NONE, + /* .iFunction = DYNAMIC */ +}; + /* full speed support: */ static struct usb_endpoint_descriptor fs_notify_desc __initdata = { @@ -208,11 +224,12 @@ static struct usb_endpoint_descriptor fs_out_desc __initdata = { }; static struct usb_descriptor_header *eth_fs_function[] __initdata = { + (struct usb_descriptor_header *) &rndis_iad_descriptor, /* control interface matches ACM, not Ethernet */ (struct usb_descriptor_header *) &rndis_control_intf, (struct usb_descriptor_header *) &header_desc, (struct usb_descriptor_header *) &call_mgmt_descriptor, - (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &rndis_acm_descriptor, (struct usb_descriptor_header *) &rndis_union_desc, (struct usb_descriptor_header *) &fs_notify_desc, /* data interface has no altsetting */ @@ -252,11 +269,12 @@ static struct usb_endpoint_descriptor hs_out_desc __initdata = { }; static struct usb_descriptor_header *eth_hs_function[] __initdata = { + (struct usb_descriptor_header *) &rndis_iad_descriptor, /* control interface matches ACM, not Ethernet */ (struct usb_descriptor_header *) &rndis_control_intf, (struct usb_descriptor_header *) &header_desc, (struct usb_descriptor_header *) &call_mgmt_descriptor, - (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &rndis_acm_descriptor, (struct usb_descriptor_header *) &rndis_union_desc, (struct usb_descriptor_header *) &hs_notify_desc, /* data interface has no altsetting */ @@ -271,6 +289,7 @@ static struct usb_descriptor_header *eth_hs_function[] __initdata = { static struct usb_string rndis_string_defs[] = { [0].s = "RNDIS Communications Control", [1].s = "RNDIS Ethernet Data", + [2].s = "RNDIS", { } /* end of list */ }; @@ -587,6 +606,7 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) if (status < 0) goto fail; rndis->ctrl_id = status; + rndis_iad_descriptor.bFirstInterface = status; rndis_control_intf.bInterfaceNumber = status; rndis_union_desc.bMasterInterface0 = status; @@ -798,6 +818,13 @@ int __init rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) return status; rndis_string_defs[1].id = status; rndis_data_intf.iInterface = status; + + /* IAD iFunction label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + rndis_string_defs[2].id = status; + rndis_iad_descriptor.iFunction = status; } /* allocate and initialize one new instance */ diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 1e6aa504d58a..fca3407e48f2 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -248,8 +248,6 @@ #include <linux/freezer.h> #include <linux/utsname.h> -#include <asm/unaligned.h> - #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -274,21 +272,20 @@ #define DRIVER_NAME "g_file_storage" #define DRIVER_VERSION "20 November 2008" -static const char longname[] = DRIVER_DESC; -static const char shortname[] = DRIVER_NAME; +static char fsg_string_manufacturer[64]; +static const char fsg_string_product[] = DRIVER_DESC; +static char fsg_string_serial[13]; +static const char fsg_string_config[] = "Self-powered"; +static const char fsg_string_interface[] = "Mass Storage"; + + +#include "storage_common.c" + MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR("Alan Stern"); MODULE_LICENSE("Dual BSD/GPL"); -/* Thanks to NetChip Technologies for donating this product ID. - * - * DO NOT REUSE THESE IDs with any other driver!! Ever!! - * Instead: allocate your own, using normal USB-IF procedures. */ -#define DRIVER_VENDOR_ID 0x0525 // NetChip -#define DRIVER_PRODUCT_ID 0xa4a5 // Linux-USB File-backed Storage Gadget - - /* * This driver assumes self-powered hardware and has no way for users to * trigger remote wakeup. It uses autoconfiguration to select endpoints @@ -298,54 +295,12 @@ MODULE_LICENSE("Dual BSD/GPL"); /*-------------------------------------------------------------------------*/ -#define LDBG(lun,fmt,args...) \ - dev_dbg(&(lun)->dev , fmt , ## args) -#define MDBG(fmt,args...) \ - pr_debug(DRIVER_NAME ": " fmt , ## args) - -#ifndef DEBUG -#undef VERBOSE_DEBUG -#undef DUMP_MSGS -#endif /* !DEBUG */ - -#ifdef VERBOSE_DEBUG -#define VLDBG LDBG -#else -#define VLDBG(lun,fmt,args...) \ - do { } while (0) -#endif /* VERBOSE_DEBUG */ - -#define LERROR(lun,fmt,args...) \ - dev_err(&(lun)->dev , fmt , ## args) -#define LWARN(lun,fmt,args...) \ - dev_warn(&(lun)->dev , fmt , ## args) -#define LINFO(lun,fmt,args...) \ - dev_info(&(lun)->dev , fmt , ## args) - -#define MINFO(fmt,args...) \ - pr_info(DRIVER_NAME ": " fmt , ## args) - -#define DBG(d, fmt, args...) \ - dev_dbg(&(d)->gadget->dev , fmt , ## args) -#define VDBG(d, fmt, args...) \ - dev_vdbg(&(d)->gadget->dev , fmt , ## args) -#define ERROR(d, fmt, args...) \ - dev_err(&(d)->gadget->dev , fmt , ## args) -#define WARNING(d, fmt, args...) \ - dev_warn(&(d)->gadget->dev , fmt , ## args) -#define INFO(d, fmt, args...) \ - dev_info(&(d)->gadget->dev , fmt , ## args) - - -/*-------------------------------------------------------------------------*/ /* Encapsulate the module parameter settings */ -#define MAX_LUNS 8 - static struct { - char *file[MAX_LUNS]; - int ro[MAX_LUNS]; + char *file[FSG_MAX_LUNS]; + int ro[FSG_MAX_LUNS]; unsigned int num_filenames; unsigned int num_ros; unsigned int nluns; @@ -372,8 +327,8 @@ static struct { .removable = 0, .can_stall = 1, .cdrom = 0, - .vendor = DRIVER_VENDOR_ID, - .product = DRIVER_PRODUCT_ID, + .vendor = FSG_VENDOR_ID, + .product = FSG_PRODUCT_ID, .release = 0xffff, // Use controller chip type .buflen = 16384, }; @@ -425,125 +380,6 @@ MODULE_PARM_DESC(buflen, "I/O buffer size"); #endif /* CONFIG_USB_FILE_STORAGE_TEST */ -/*-------------------------------------------------------------------------*/ - -/* SCSI device types */ -#define TYPE_DISK 0x00 -#define TYPE_CDROM 0x05 - -/* USB protocol value = the transport method */ -#define USB_PR_CBI 0x00 // Control/Bulk/Interrupt -#define USB_PR_CB 0x01 // Control/Bulk w/o interrupt -#define USB_PR_BULK 0x50 // Bulk-only - -/* USB subclass value = the protocol encapsulation */ -#define USB_SC_RBC 0x01 // Reduced Block Commands (flash) -#define USB_SC_8020 0x02 // SFF-8020i, MMC-2, ATAPI (CD-ROM) -#define USB_SC_QIC 0x03 // QIC-157 (tape) -#define USB_SC_UFI 0x04 // UFI (floppy) -#define USB_SC_8070 0x05 // SFF-8070i (removable) -#define USB_SC_SCSI 0x06 // Transparent SCSI - -/* Bulk-only data structures */ - -/* Command Block Wrapper */ -struct bulk_cb_wrap { - __le32 Signature; // Contains 'USBC' - u32 Tag; // Unique per command id - __le32 DataTransferLength; // Size of the data - u8 Flags; // Direction in bit 7 - u8 Lun; // LUN (normally 0) - u8 Length; // Of the CDB, <= MAX_COMMAND_SIZE - u8 CDB[16]; // Command Data Block -}; - -#define USB_BULK_CB_WRAP_LEN 31 -#define USB_BULK_CB_SIG 0x43425355 // Spells out USBC -#define USB_BULK_IN_FLAG 0x80 - -/* Command Status Wrapper */ -struct bulk_cs_wrap { - __le32 Signature; // Should = 'USBS' - u32 Tag; // Same as original command - __le32 Residue; // Amount not transferred - u8 Status; // See below -}; - -#define USB_BULK_CS_WRAP_LEN 13 -#define USB_BULK_CS_SIG 0x53425355 // Spells out 'USBS' -#define USB_STATUS_PASS 0 -#define USB_STATUS_FAIL 1 -#define USB_STATUS_PHASE_ERROR 2 - -/* Bulk-only class specific requests */ -#define USB_BULK_RESET_REQUEST 0xff -#define USB_BULK_GET_MAX_LUN_REQUEST 0xfe - - -/* CBI Interrupt data structure */ -struct interrupt_data { - u8 bType; - u8 bValue; -}; - -#define CBI_INTERRUPT_DATA_LEN 2 - -/* CBI Accept Device-Specific Command request */ -#define USB_CBI_ADSC_REQUEST 0x00 - - -#define MAX_COMMAND_SIZE 16 // Length of a SCSI Command Data Block - -/* SCSI commands that we recognize */ -#define SC_FORMAT_UNIT 0x04 -#define SC_INQUIRY 0x12 -#define SC_MODE_SELECT_6 0x15 -#define SC_MODE_SELECT_10 0x55 -#define SC_MODE_SENSE_6 0x1a -#define SC_MODE_SENSE_10 0x5a -#define SC_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e -#define SC_READ_6 0x08 -#define SC_READ_10 0x28 -#define SC_READ_12 0xa8 -#define SC_READ_CAPACITY 0x25 -#define SC_READ_FORMAT_CAPACITIES 0x23 -#define SC_READ_HEADER 0x44 -#define SC_READ_TOC 0x43 -#define SC_RELEASE 0x17 -#define SC_REQUEST_SENSE 0x03 -#define SC_RESERVE 0x16 -#define SC_SEND_DIAGNOSTIC 0x1d -#define SC_START_STOP_UNIT 0x1b -#define SC_SYNCHRONIZE_CACHE 0x35 -#define SC_TEST_UNIT_READY 0x00 -#define SC_VERIFY 0x2f -#define SC_WRITE_6 0x0a -#define SC_WRITE_10 0x2a -#define SC_WRITE_12 0xaa - -/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */ -#define SS_NO_SENSE 0 -#define SS_COMMUNICATION_FAILURE 0x040800 -#define SS_INVALID_COMMAND 0x052000 -#define SS_INVALID_FIELD_IN_CDB 0x052400 -#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100 -#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500 -#define SS_MEDIUM_NOT_PRESENT 0x023a00 -#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302 -#define SS_NOT_READY_TO_READY_TRANSITION 0x062800 -#define SS_RESET_OCCURRED 0x062900 -#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900 -#define SS_UNRECOVERED_READ_ERROR 0x031100 -#define SS_WRITE_ERROR 0x030c02 -#define SS_WRITE_PROTECTED 0x072700 - -#define SK(x) ((u8) ((x) >> 16)) // Sense Key byte, etc. -#define ASC(x) ((u8) ((x) >> 8)) -#define ASCQ(x) ((u8) (x)) - - -/*-------------------------------------------------------------------------*/ - /* * These definitions will permit the compiler to avoid generating code for * parts of the driver that aren't used in the non-TEST version. Even gcc @@ -566,81 +402,8 @@ struct interrupt_data { #endif /* CONFIG_USB_FILE_STORAGE_TEST */ -struct lun { - struct file *filp; - loff_t file_length; - loff_t num_sectors; - - unsigned int ro : 1; - unsigned int prevent_medium_removal : 1; - unsigned int registered : 1; - unsigned int info_valid : 1; - - u32 sense_data; - u32 sense_data_info; - u32 unit_attention_data; - - struct device dev; -}; - -#define backing_file_is_open(curlun) ((curlun)->filp != NULL) - -static struct lun *dev_to_lun(struct device *dev) -{ - return container_of(dev, struct lun, dev); -} - - -/* Big enough to hold our biggest descriptor */ -#define EP0_BUFSIZE 256 -#define DELAYED_STATUS (EP0_BUFSIZE + 999) // An impossibly large value - -/* Number of buffers we will use. 2 is enough for double-buffering */ -#define NUM_BUFFERS 2 - -enum fsg_buffer_state { - BUF_STATE_EMPTY = 0, - BUF_STATE_FULL, - BUF_STATE_BUSY -}; - -struct fsg_buffhd { - void *buf; - enum fsg_buffer_state state; - struct fsg_buffhd *next; - - /* The NetChip 2280 is faster, and handles some protocol faults - * better, if we don't submit any short bulk-out read requests. - * So we will record the intended request length here. */ - unsigned int bulk_out_intended_length; - - struct usb_request *inreq; - int inreq_busy; - struct usb_request *outreq; - int outreq_busy; -}; - -enum fsg_state { - FSG_STATE_COMMAND_PHASE = -10, // This one isn't used anywhere - FSG_STATE_DATA_PHASE, - FSG_STATE_STATUS_PHASE, - - FSG_STATE_IDLE = 0, - FSG_STATE_ABORT_BULK_OUT, - FSG_STATE_RESET, - FSG_STATE_INTERFACE_CHANGE, - FSG_STATE_CONFIG_CHANGE, - FSG_STATE_DISCONNECT, - FSG_STATE_EXIT, - FSG_STATE_TERMINATED -}; +/*-------------------------------------------------------------------------*/ -enum data_direction { - DATA_DIR_UNKNOWN = 0, - DATA_DIR_FROM_HOST, - DATA_DIR_TO_HOST, - DATA_DIR_NONE -}; struct fsg_dev { /* lock protects: state, all the req_busy's, and cbbuf_cmnd */ @@ -662,7 +425,7 @@ struct fsg_dev { int intreq_busy; struct fsg_buffhd *intr_buffhd; - unsigned int bulk_out_maxpacket; + unsigned int bulk_out_maxpacket; enum fsg_state state; // For exception handling unsigned int exception_req_tag; @@ -687,7 +450,7 @@ struct fsg_dev { struct fsg_buffhd *next_buffhd_to_fill; struct fsg_buffhd *next_buffhd_to_drain; - struct fsg_buffhd buffhds[NUM_BUFFERS]; + struct fsg_buffhd buffhds[FSG_NUM_BUFFERS]; int thread_wakeup_needed; struct completion thread_notifier; @@ -712,8 +475,8 @@ struct fsg_dev { u8 cbbuf_cmnd[MAX_COMMAND_SIZE]; unsigned int nluns; - struct lun *luns; - struct lun *curlun; + struct fsg_lun *luns; + struct fsg_lun *curlun; }; typedef void (*fsg_routine_t)(struct fsg_dev *); @@ -739,49 +502,9 @@ static void set_bulk_out_req_length(struct fsg_dev *fsg, static struct fsg_dev *the_fsg; static struct usb_gadget_driver fsg_driver; -static void close_backing_file(struct lun *curlun); - /*-------------------------------------------------------------------------*/ -#ifdef DUMP_MSGS - -static void dump_msg(struct fsg_dev *fsg, const char *label, - const u8 *buf, unsigned int length) -{ - if (length < 512) { - DBG(fsg, "%s, length %u:\n", label, length); - print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, - 16, 1, buf, length, 0); - } -} - -static void dump_cdb(struct fsg_dev *fsg) -{} - -#else - -static void dump_msg(struct fsg_dev *fsg, const char *label, - const u8 *buf, unsigned int length) -{} - -#ifdef VERBOSE_DEBUG - -static void dump_cdb(struct fsg_dev *fsg) -{ - print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, - 16, 1, fsg->cmnd, fsg->cmnd_size, 0); -} - -#else - -static void dump_cdb(struct fsg_dev *fsg) -{} - -#endif /* VERBOSE_DEBUG */ -#endif /* DUMP_MSGS */ - - static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) { const char *name; @@ -799,26 +522,11 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep) /*-------------------------------------------------------------------------*/ -/* Routines for unaligned data access */ - -static u32 get_unaligned_be24(u8 *buf) -{ - return 0xffffff & (u32) get_unaligned_be32(buf - 1); -} - - -/*-------------------------------------------------------------------------*/ - /* * DESCRIPTORS ... most are static, but strings and (full) configuration * descriptors are built on demand. Also the (static) config and interface * descriptors are adjusted during fsg_bind(). */ -#define STRING_MANUFACTURER 1 -#define STRING_PRODUCT 2 -#define STRING_SERIAL 3 -#define STRING_CONFIG 4 -#define STRING_INTERFACE 5 /* There is only one configuration. */ #define CONFIG_VALUE 1 @@ -832,13 +540,13 @@ device_desc = { .bDeviceClass = USB_CLASS_PER_INTERFACE, /* The next three values can be overridden by module parameters */ - .idVendor = cpu_to_le16(DRIVER_VENDOR_ID), - .idProduct = cpu_to_le16(DRIVER_PRODUCT_ID), + .idVendor = cpu_to_le16(FSG_VENDOR_ID), + .idProduct = cpu_to_le16(FSG_PRODUCT_ID), .bcdDevice = cpu_to_le16(0xffff), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, - .iSerialNumber = STRING_SERIAL, + .iManufacturer = FSG_STRING_MANUFACTURER, + .iProduct = FSG_STRING_PRODUCT, + .iSerialNumber = FSG_STRING_SERIAL, .bNumConfigurations = 1, }; @@ -850,86 +558,12 @@ config_desc = { /* wTotalLength computed by usb_gadget_config_buf() */ .bNumInterfaces = 1, .bConfigurationValue = CONFIG_VALUE, - .iConfiguration = STRING_CONFIG, + .iConfiguration = FSG_STRING_CONFIG, .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, }; -static struct usb_otg_descriptor -otg_desc = { - .bLength = sizeof(otg_desc), - .bDescriptorType = USB_DT_OTG, - - .bmAttributes = USB_OTG_SRP, -}; - -/* There is only one interface. */ -static struct usb_interface_descriptor -intf_desc = { - .bLength = sizeof intf_desc, - .bDescriptorType = USB_DT_INTERFACE, - - .bNumEndpoints = 2, // Adjusted during fsg_bind() - .bInterfaceClass = USB_CLASS_MASS_STORAGE, - .bInterfaceSubClass = USB_SC_SCSI, // Adjusted during fsg_bind() - .bInterfaceProtocol = USB_PR_BULK, // Adjusted during fsg_bind() - .iInterface = STRING_INTERFACE, -}; - -/* Three full-speed endpoint descriptors: bulk-in, bulk-out, - * and interrupt-in. */ - -static struct usb_endpoint_descriptor -fs_bulk_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - /* wMaxPacketSize set by autoconfiguration */ -}; - -static struct usb_endpoint_descriptor -fs_bulk_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - /* wMaxPacketSize set by autoconfiguration */ -}; - -static struct usb_endpoint_descriptor -fs_intr_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(2), - .bInterval = 32, // frames -> 32 ms -}; - -static const struct usb_descriptor_header *fs_function[] = { - (struct usb_descriptor_header *) &otg_desc, - (struct usb_descriptor_header *) &intf_desc, - (struct usb_descriptor_header *) &fs_bulk_in_desc, - (struct usb_descriptor_header *) &fs_bulk_out_desc, - (struct usb_descriptor_header *) &fs_intr_in_desc, - NULL, -}; -#define FS_FUNCTION_PRE_EP_ENTRIES 2 - - -/* - * USB 2.0 devices need to expose both high speed and full speed - * descriptors, unless they only run at full speed. - * - * That means alternate endpoint descriptors (bigger packets) - * and a "device qualifier" ... plus more construction options - * for the config descriptor. - */ static struct usb_qualifier_descriptor dev_qualifier = { .bLength = sizeof dev_qualifier, @@ -941,78 +575,6 @@ dev_qualifier = { .bNumConfigurations = 1, }; -static struct usb_endpoint_descriptor -hs_bulk_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - /* bEndpointAddress copied from fs_bulk_in_desc during fsg_bind() */ - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = cpu_to_le16(512), -}; - -static struct usb_endpoint_descriptor -hs_bulk_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - /* bEndpointAddress copied from fs_bulk_out_desc during fsg_bind() */ - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = cpu_to_le16(512), - .bInterval = 1, // NAK every 1 uframe -}; - -static struct usb_endpoint_descriptor -hs_intr_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */ - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(2), - .bInterval = 9, // 2**(9-1) = 256 uframes -> 32 ms -}; - -static const struct usb_descriptor_header *hs_function[] = { - (struct usb_descriptor_header *) &otg_desc, - (struct usb_descriptor_header *) &intf_desc, - (struct usb_descriptor_header *) &hs_bulk_in_desc, - (struct usb_descriptor_header *) &hs_bulk_out_desc, - (struct usb_descriptor_header *) &hs_intr_in_desc, - NULL, -}; -#define HS_FUNCTION_PRE_EP_ENTRIES 2 - -/* Maxpacket and other transfer characteristics vary by speed. */ -static struct usb_endpoint_descriptor * -ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs, - struct usb_endpoint_descriptor *hs) -{ - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} - - -/* The CBI specification limits the serial string to 12 uppercase hexadecimal - * characters. */ -static char manufacturer[64]; -static char serial[13]; - -/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */ -static struct usb_string strings[] = { - {STRING_MANUFACTURER, manufacturer}, - {STRING_PRODUCT, longname}, - {STRING_SERIAL, serial}, - {STRING_CONFIG, "Self-powered"}, - {STRING_INTERFACE, "Mass Storage"}, - {} -}; - -static struct usb_gadget_strings stringtab = { - .language = 0x0409, // en-us - .strings = strings, -}; /* @@ -1032,10 +594,9 @@ static int populate_config_buf(struct usb_gadget *gadget, if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG) speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed; - if (gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH) - function = hs_function; - else - function = fs_function; + function = gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH + ? (const struct usb_descriptor_header **)fsg_hs_function + : (const struct usb_descriptor_header **)fsg_fs_function; /* for now, don't advertise srp-only devices */ if (!gadget_is_otg(gadget)) @@ -1386,7 +947,7 @@ get_config: VDBG(fsg, "get string descriptor\n"); /* wIndex == language code */ - value = usb_gadget_get_string(&stringtab, + value = usb_gadget_get_string(&fsg_stringtab, w_value & 0xff, req->buf); break; } @@ -1551,7 +1112,7 @@ static int sleep_thread(struct fsg_dev *fsg) static int do_read(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; u32 lba; struct fsg_buffhd *bh; int rc; @@ -1677,7 +1238,7 @@ static int do_read(struct fsg_dev *fsg) static int do_write(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; u32 lba; struct fsg_buffhd *bh; int get_some_more; @@ -1864,33 +1425,14 @@ static int do_write(struct fsg_dev *fsg) /*-------------------------------------------------------------------------*/ -/* Sync the file data, don't bother with the metadata. - * This code was copied from fs/buffer.c:sys_fdatasync(). */ -static int fsync_sub(struct lun *curlun) -{ - struct file *filp = curlun->filp; - - if (curlun->ro || !filp) - return 0; - return vfs_fsync(filp, filp->f_path.dentry, 1); -} - -static void fsync_all(struct fsg_dev *fsg) -{ - int i; - - for (i = 0; i < fsg->nluns; ++i) - fsync_sub(&fsg->luns[i]); -} - static int do_synchronize_cache(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; int rc; /* We ignore the requested LBA and write out all file's * dirty data buffers. */ - rc = fsync_sub(curlun); + rc = fsg_lun_fsync_sub(curlun); if (rc) curlun->sense_data = SS_WRITE_ERROR; return 0; @@ -1899,7 +1441,7 @@ static int do_synchronize_cache(struct fsg_dev *fsg) /*-------------------------------------------------------------------------*/ -static void invalidate_sub(struct lun *curlun) +static void invalidate_sub(struct fsg_lun *curlun) { struct file *filp = curlun->filp; struct inode *inode = filp->f_path.dentry->d_inode; @@ -1911,7 +1453,7 @@ static void invalidate_sub(struct lun *curlun) static int do_verify(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; u32 lba; u32 verification_length; struct fsg_buffhd *bh = fsg->next_buffhd_to_fill; @@ -1944,7 +1486,7 @@ static int do_verify(struct fsg_dev *fsg) file_offset = ((loff_t) lba) << 9; /* Write out all the dirty buffers before invalidating them */ - fsync_sub(curlun); + fsg_lun_fsync_sub(curlun); if (signal_pending(current)) return -EINTR; @@ -2041,7 +1583,7 @@ static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh) static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; u8 *buf = (u8 *) bh->buf; u32 sd, sdinfo; int valid; @@ -2095,7 +1637,7 @@ static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; u32 lba = get_unaligned_be32(&fsg->cmnd[2]); int pmi = fsg->cmnd[8]; u8 *buf = (u8 *) bh->buf; @@ -2113,27 +1655,9 @@ static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh) } -static void store_cdrom_address(u8 *dest, int msf, u32 addr) -{ - if (msf) { - /* Convert to Minutes-Seconds-Frames */ - addr >>= 2; /* Convert to 2048-byte frames */ - addr += 2*75; /* Lead-in occupies 2 seconds */ - dest[3] = addr % 75; /* Frames */ - addr /= 75; - dest[2] = addr % 60; /* Seconds */ - addr /= 60; - dest[1] = addr; /* Minutes */ - dest[0] = 0; /* Reserved */ - } else { - /* Absolute sector */ - put_unaligned_be32(addr, dest); - } -} - static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; int msf = fsg->cmnd[1] & 0x02; u32 lba = get_unaligned_be32(&fsg->cmnd[2]); u8 *buf = (u8 *) bh->buf; @@ -2156,7 +1680,7 @@ static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh) static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; int msf = fsg->cmnd[1] & 0x02; int start_track = fsg->cmnd[6]; u8 *buf = (u8 *) bh->buf; @@ -2184,7 +1708,7 @@ static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh) static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; int mscmnd = fsg->cmnd[0]; u8 *buf = (u8 *) bh->buf; u8 *buf0 = buf; @@ -2265,7 +1789,7 @@ static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh) static int do_start_stop(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; int loej, start; if (!mod_data.removable) { @@ -2295,7 +1819,7 @@ static int do_start_stop(struct fsg_dev *fsg) if (loej) { // Simulate an unload/eject up_read(&fsg->filesem); down_write(&fsg->filesem); - close_backing_file(curlun); + fsg_lun_close(curlun); up_write(&fsg->filesem); down_read(&fsg->filesem); } @@ -2303,7 +1827,7 @@ static int do_start_stop(struct fsg_dev *fsg) /* Our emulation doesn't support mounting; the medium is * available for use as soon as it is loaded. */ - if (!backing_file_is_open(curlun)) { + if (!fsg_lun_is_open(curlun)) { curlun->sense_data = SS_MEDIUM_NOT_PRESENT; return -EINVAL; } @@ -2315,7 +1839,7 @@ static int do_start_stop(struct fsg_dev *fsg) static int do_prevent_allow(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; int prevent; if (!mod_data.removable) { @@ -2330,7 +1854,7 @@ static int do_prevent_allow(struct fsg_dev *fsg) } if (curlun->prevent_medium_removal && !prevent) - fsync_sub(curlun); + fsg_lun_fsync_sub(curlun); curlun->prevent_medium_removal = prevent; return 0; } @@ -2339,7 +1863,7 @@ static int do_prevent_allow(struct fsg_dev *fsg) static int do_read_format_capacities(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; u8 *buf = (u8 *) bh->buf; buf[0] = buf[1] = buf[2] = 0; @@ -2356,7 +1880,7 @@ static int do_read_format_capacities(struct fsg_dev *fsg, static int do_mode_select(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; /* We don't support MODE SELECT */ curlun->sense_data = SS_INVALID_COMMAND; @@ -2599,7 +2123,7 @@ static int finish_reply(struct fsg_dev *fsg) static int send_status(struct fsg_dev *fsg) { - struct lun *curlun = fsg->curlun; + struct fsg_lun *curlun = fsg->curlun; struct fsg_buffhd *bh; int rc; u8 status = USB_STATUS_PASS; @@ -2691,7 +2215,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size, int lun = fsg->cmnd[1] >> 5; static const char dirletter[4] = {'u', 'o', 'i', 'n'}; char hdlen[20]; - struct lun *curlun; + struct fsg_lun *curlun; /* Adjust the expected cmnd_size for protocol encapsulation padding. * Transparent SCSI doesn't pad. */ @@ -2820,7 +2344,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size, /* If the medium isn't mounted and the command needs to access * it, return an error. */ - if (curlun && !backing_file_is_open(curlun) && needs_medium) { + if (curlun && !fsg_lun_is_open(curlun) && needs_medium) { curlun->sense_data = SS_MEDIUM_NOT_PRESENT; return -EINVAL; } @@ -3075,8 +2599,8 @@ static int do_scsi_command(struct fsg_dev *fsg) static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) { - struct usb_request *req = bh->outreq; - struct bulk_cb_wrap *cbw = req->buf; + struct usb_request *req = bh->outreq; + struct fsg_bulk_cb_wrap *cbw = req->buf; /* Was this a real packet? Should it be ignored? */ if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags)) @@ -3105,7 +2629,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) } /* Is the CBW meaningful? */ - if (cbw->Lun >= MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG || + if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG || cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) { DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, " "cmdlen %u\n", @@ -3238,7 +2762,7 @@ static int do_set_interface(struct fsg_dev *fsg, int altsetting) reset: /* Deallocate the requests */ - for (i = 0; i < NUM_BUFFERS; ++i) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { struct fsg_buffhd *bh = &fsg->buffhds[i]; if (bh->inreq) { @@ -3276,12 +2800,14 @@ reset: DBG(fsg, "set interface %d\n", altsetting); /* Enable the endpoints */ - d = ep_desc(fsg->gadget, &fs_bulk_in_desc, &hs_bulk_in_desc); + d = fsg_ep_desc(fsg->gadget, + &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc); if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0) goto reset; fsg->bulk_in_enabled = 1; - d = ep_desc(fsg->gadget, &fs_bulk_out_desc, &hs_bulk_out_desc); + d = fsg_ep_desc(fsg->gadget, + &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc); if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0) goto reset; fsg->bulk_out_enabled = 1; @@ -3289,14 +2815,15 @@ reset: clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags); if (transport_is_cbi()) { - d = ep_desc(fsg->gadget, &fs_intr_in_desc, &hs_intr_in_desc); + d = fsg_ep_desc(fsg->gadget, + &fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc); if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0) goto reset; fsg->intr_in_enabled = 1; } /* Allocate the requests */ - for (i = 0; i < NUM_BUFFERS; ++i) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { struct fsg_buffhd *bh = &fsg->buffhds[i]; if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0) @@ -3372,7 +2899,7 @@ static void handle_exception(struct fsg_dev *fsg) struct fsg_buffhd *bh; enum fsg_state old_state; u8 new_config; - struct lun *curlun; + struct fsg_lun *curlun; unsigned int exception_req_tag; int rc; @@ -3392,7 +2919,7 @@ static void handle_exception(struct fsg_dev *fsg) /* Cancel all the pending transfers */ if (fsg->intreq_busy) usb_ep_dequeue(fsg->intr_in, fsg->intreq); - for (i = 0; i < NUM_BUFFERS; ++i) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { bh = &fsg->buffhds[i]; if (bh->inreq_busy) usb_ep_dequeue(fsg->bulk_in, bh->inreq); @@ -3403,7 +2930,7 @@ static void handle_exception(struct fsg_dev *fsg) /* Wait until everything is idle */ for (;;) { num_active = fsg->intreq_busy; - for (i = 0; i < NUM_BUFFERS; ++i) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { bh = &fsg->buffhds[i]; num_active += bh->inreq_busy + bh->outreq_busy; } @@ -3425,7 +2952,7 @@ static void handle_exception(struct fsg_dev *fsg) * state, and the exception. Then invoke the handler. */ spin_lock_irq(&fsg->lock); - for (i = 0; i < NUM_BUFFERS; ++i) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { bh = &fsg->buffhds[i]; bh->state = BUF_STATE_EMPTY; } @@ -3506,7 +3033,8 @@ static void handle_exception(struct fsg_dev *fsg) break; case FSG_STATE_DISCONNECT: - fsync_all(fsg); + for (i = 0; i < fsg->nluns; ++i) + fsg_lun_fsync_sub(fsg->luns + i); do_set_config(fsg, 0); // Unconfigured state break; @@ -3595,201 +3123,10 @@ static int fsg_main_thread(void *fsg_) /*-------------------------------------------------------------------------*/ -/* If the next two routines are called while the gadget is registered, - * the caller must own fsg->filesem for writing. */ - -static int open_backing_file(struct lun *curlun, const char *filename) -{ - int ro; - struct file *filp = NULL; - int rc = -EINVAL; - struct inode *inode = NULL; - loff_t size; - loff_t num_sectors; - loff_t min_sectors; - - /* R/W if we can, R/O if we must */ - ro = curlun->ro; - if (!ro) { - filp = filp_open(filename, O_RDWR | O_LARGEFILE, 0); - if (-EROFS == PTR_ERR(filp)) - ro = 1; - } - if (ro) - filp = filp_open(filename, O_RDONLY | O_LARGEFILE, 0); - if (IS_ERR(filp)) { - LINFO(curlun, "unable to open backing file: %s\n", filename); - return PTR_ERR(filp); - } - - if (!(filp->f_mode & FMODE_WRITE)) - ro = 1; - - if (filp->f_path.dentry) - inode = filp->f_path.dentry->d_inode; - if (inode && S_ISBLK(inode->i_mode)) { - if (bdev_read_only(inode->i_bdev)) - ro = 1; - } else if (!inode || !S_ISREG(inode->i_mode)) { - LINFO(curlun, "invalid file type: %s\n", filename); - goto out; - } - - /* If we can't read the file, it's no good. - * If we can't write the file, use it read-only. */ - if (!filp->f_op || !(filp->f_op->read || filp->f_op->aio_read)) { - LINFO(curlun, "file not readable: %s\n", filename); - goto out; - } - if (!(filp->f_op->write || filp->f_op->aio_write)) - ro = 1; - - size = i_size_read(inode->i_mapping->host); - if (size < 0) { - LINFO(curlun, "unable to find file size: %s\n", filename); - rc = (int) size; - goto out; - } - num_sectors = size >> 9; // File size in 512-byte blocks - min_sectors = 1; - if (mod_data.cdrom) { - num_sectors &= ~3; // Reduce to a multiple of 2048 - min_sectors = 300*4; // Smallest track is 300 frames - if (num_sectors >= 256*60*75*4) { - num_sectors = (256*60*75 - 1) * 4; - LINFO(curlun, "file too big: %s\n", filename); - LINFO(curlun, "using only first %d blocks\n", - (int) num_sectors); - } - } - if (num_sectors < min_sectors) { - LINFO(curlun, "file too small: %s\n", filename); - rc = -ETOOSMALL; - goto out; - } - - get_file(filp); - curlun->ro = ro; - curlun->filp = filp; - curlun->file_length = size; - curlun->num_sectors = num_sectors; - LDBG(curlun, "open backing file: %s\n", filename); - rc = 0; - -out: - filp_close(filp, current->files); - return rc; -} - - -static void close_backing_file(struct lun *curlun) -{ - if (curlun->filp) { - LDBG(curlun, "close backing file\n"); - fput(curlun->filp); - curlun->filp = NULL; - } -} - - -static ssize_t show_ro(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct lun *curlun = dev_to_lun(dev); - - return sprintf(buf, "%d\n", curlun->ro); -} - -static ssize_t show_file(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct lun *curlun = dev_to_lun(dev); - struct fsg_dev *fsg = dev_get_drvdata(dev); - char *p; - ssize_t rc; - - down_read(&fsg->filesem); - if (backing_file_is_open(curlun)) { // Get the complete pathname - p = d_path(&curlun->filp->f_path, buf, PAGE_SIZE - 1); - if (IS_ERR(p)) - rc = PTR_ERR(p); - else { - rc = strlen(p); - memmove(buf, p, rc); - buf[rc] = '\n'; // Add a newline - buf[++rc] = 0; - } - } else { // No file, return 0 bytes - *buf = 0; - rc = 0; - } - up_read(&fsg->filesem); - return rc; -} - - -static ssize_t store_ro(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - ssize_t rc = count; - struct lun *curlun = dev_to_lun(dev); - struct fsg_dev *fsg = dev_get_drvdata(dev); - int i; - - if (sscanf(buf, "%d", &i) != 1) - return -EINVAL; - - /* Allow the write-enable status to change only while the backing file - * is closed. */ - down_read(&fsg->filesem); - if (backing_file_is_open(curlun)) { - LDBG(curlun, "read-only status change prevented\n"); - rc = -EBUSY; - } else { - curlun->ro = !!i; - LDBG(curlun, "read-only status set to %d\n", curlun->ro); - } - up_read(&fsg->filesem); - return rc; -} - -static ssize_t store_file(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct lun *curlun = dev_to_lun(dev); - struct fsg_dev *fsg = dev_get_drvdata(dev); - int rc = 0; - - if (curlun->prevent_medium_removal && backing_file_is_open(curlun)) { - LDBG(curlun, "eject attempt prevented\n"); - return -EBUSY; // "Door is locked" - } - - /* Remove a trailing newline */ - if (count > 0 && buf[count-1] == '\n') - ((char *) buf)[count-1] = 0; // Ugh! - - /* Eject current medium */ - down_write(&fsg->filesem); - if (backing_file_is_open(curlun)) { - close_backing_file(curlun); - curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT; - } - - /* Load new medium */ - if (count > 0 && buf[0]) { - rc = open_backing_file(curlun, buf); - if (rc == 0) - curlun->unit_attention_data = - SS_NOT_READY_TO_READY_TRANSITION; - } - up_write(&fsg->filesem); - return (rc < 0 ? rc : count); -} - /* The write permissions and store_xxx pointers are set in fsg_bind() */ -static DEVICE_ATTR(ro, 0444, show_ro, NULL); -static DEVICE_ATTR(file, 0444, show_file, NULL); +static DEVICE_ATTR(ro, 0444, fsg_show_ro, NULL); +static DEVICE_ATTR(file, 0444, fsg_show_file, NULL); /*-------------------------------------------------------------------------*/ @@ -3804,7 +3141,9 @@ static void fsg_release(struct kref *ref) static void lun_release(struct device *dev) { - struct fsg_dev *fsg = dev_get_drvdata(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + struct fsg_dev *fsg = + container_of(filesem, struct fsg_dev, filesem); kref_put(&fsg->ref, fsg_release); } @@ -3813,7 +3152,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget) { struct fsg_dev *fsg = get_gadget_data(gadget); int i; - struct lun *curlun; + struct fsg_lun *curlun; struct usb_request *req = fsg->ep0req; DBG(fsg, "unbind\n"); @@ -3825,7 +3164,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget) if (curlun->registered) { device_remove_file(&curlun->dev, &dev_attr_ro); device_remove_file(&curlun->dev, &dev_attr_file); - close_backing_file(curlun); + fsg_lun_close(curlun); device_unregister(&curlun->dev); curlun->registered = 0; } @@ -3841,7 +3180,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget) } /* Free the data buffers */ - for (i = 0; i < NUM_BUFFERS; ++i) + for (i = 0; i < FSG_NUM_BUFFERS; ++i) kfree(fsg->buffhds[i].buf); /* Free the request and buffer for endpoint 0 */ @@ -3948,7 +3287,7 @@ static int __init fsg_bind(struct usb_gadget *gadget) struct fsg_dev *fsg = the_fsg; int rc; int i; - struct lun *curlun; + struct fsg_lun *curlun; struct usb_ep *ep; struct usb_request *req; char *pathbuf, *p; @@ -3963,10 +3302,10 @@ static int __init fsg_bind(struct usb_gadget *gadget) if (mod_data.removable) { // Enable the store_xxx attributes dev_attr_file.attr.mode = 0644; - dev_attr_file.store = store_file; + dev_attr_file.store = fsg_store_file; if (!mod_data.cdrom) { dev_attr_ro.attr.mode = 0644; - dev_attr_ro.store = store_ro; + dev_attr_ro.store = fsg_store_ro; } } @@ -3974,7 +3313,7 @@ static int __init fsg_bind(struct usb_gadget *gadget) i = mod_data.nluns; if (i == 0) i = max(mod_data.num_filenames, 1u); - if (i > MAX_LUNS) { + if (i > FSG_MAX_LUNS) { ERROR(fsg, "invalid number of LUNs: %d\n", i); rc = -EINVAL; goto out; @@ -3982,7 +3321,7 @@ static int __init fsg_bind(struct usb_gadget *gadget) /* Create the LUNs, open their backing files, and register the * LUN devices in sysfs. */ - fsg->luns = kzalloc(i * sizeof(struct lun), GFP_KERNEL); + fsg->luns = kzalloc(i * sizeof(struct fsg_lun), GFP_KERNEL); if (!fsg->luns) { rc = -ENOMEM; goto out; @@ -3991,13 +3330,14 @@ static int __init fsg_bind(struct usb_gadget *gadget) for (i = 0; i < fsg->nluns; ++i) { curlun = &fsg->luns[i]; - curlun->ro = mod_data.ro[i]; - if (mod_data.cdrom) - curlun->ro = 1; + curlun->cdrom = !!mod_data.cdrom; + curlun->ro = mod_data.cdrom || mod_data.ro[i]; + curlun->initially_ro = curlun->ro; + curlun->removable = mod_data.removable; curlun->dev.release = lun_release; curlun->dev.parent = &gadget->dev; curlun->dev.driver = &fsg_driver.driver; - dev_set_drvdata(&curlun->dev, fsg); + dev_set_drvdata(&curlun->dev, &fsg->filesem); dev_set_name(&curlun->dev,"%s-lun%d", dev_name(&gadget->dev), i); @@ -4016,7 +3356,7 @@ static int __init fsg_bind(struct usb_gadget *gadget) kref_get(&fsg->ref); if (mod_data.file[i] && *mod_data.file[i]) { - if ((rc = open_backing_file(curlun, + if ((rc = fsg_lun_open(curlun, mod_data.file[i])) != 0) goto out; } else if (!mod_data.removable) { @@ -4028,20 +3368,20 @@ static int __init fsg_bind(struct usb_gadget *gadget) /* Find all the endpoints we will use */ usb_ep_autoconfig_reset(gadget); - ep = usb_ep_autoconfig(gadget, &fs_bulk_in_desc); + ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc); if (!ep) goto autoconf_fail; ep->driver_data = fsg; // claim the endpoint fsg->bulk_in = ep; - ep = usb_ep_autoconfig(gadget, &fs_bulk_out_desc); + ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc); if (!ep) goto autoconf_fail; ep->driver_data = fsg; // claim the endpoint fsg->bulk_out = ep; if (transport_is_cbi()) { - ep = usb_ep_autoconfig(gadget, &fs_intr_in_desc); + ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc); if (!ep) goto autoconf_fail; ep->driver_data = fsg; // claim the endpoint @@ -4055,28 +3395,28 @@ static int __init fsg_bind(struct usb_gadget *gadget) device_desc.bcdDevice = cpu_to_le16(mod_data.release); i = (transport_is_cbi() ? 3 : 2); // Number of endpoints - intf_desc.bNumEndpoints = i; - intf_desc.bInterfaceSubClass = mod_data.protocol_type; - intf_desc.bInterfaceProtocol = mod_data.transport_type; - fs_function[i + FS_FUNCTION_PRE_EP_ENTRIES] = NULL; + fsg_intf_desc.bNumEndpoints = i; + fsg_intf_desc.bInterfaceSubClass = mod_data.protocol_type; + fsg_intf_desc.bInterfaceProtocol = mod_data.transport_type; + fsg_fs_function[i + FSG_FS_FUNCTION_PRE_EP_ENTRIES] = NULL; if (gadget_is_dualspeed(gadget)) { - hs_function[i + HS_FUNCTION_PRE_EP_ENTRIES] = NULL; + fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL; /* Assume ep0 uses the same maxpacket value for both speeds */ dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket; /* Assume endpoint addresses are the same for both speeds */ - hs_bulk_in_desc.bEndpointAddress = - fs_bulk_in_desc.bEndpointAddress; - hs_bulk_out_desc.bEndpointAddress = - fs_bulk_out_desc.bEndpointAddress; - hs_intr_in_desc.bEndpointAddress = - fs_intr_in_desc.bEndpointAddress; + fsg_hs_bulk_in_desc.bEndpointAddress = + fsg_fs_bulk_in_desc.bEndpointAddress; + fsg_hs_bulk_out_desc.bEndpointAddress = + fsg_fs_bulk_out_desc.bEndpointAddress; + fsg_hs_intr_in_desc.bEndpointAddress = + fsg_fs_intr_in_desc.bEndpointAddress; } if (gadget_is_otg(gadget)) - otg_desc.bmAttributes |= USB_OTG_HNP; + fsg_otg_desc.bmAttributes |= USB_OTG_HNP; rc = -ENOMEM; @@ -4090,7 +3430,7 @@ static int __init fsg_bind(struct usb_gadget *gadget) req->complete = ep0_complete; /* Allocate the data buffers */ - for (i = 0; i < NUM_BUFFERS; ++i) { + for (i = 0; i < FSG_NUM_BUFFERS; ++i) { struct fsg_buffhd *bh = &fsg->buffhds[i]; /* Allocate for the bulk-in endpoint. We assume that @@ -4101,23 +3441,24 @@ static int __init fsg_bind(struct usb_gadget *gadget) goto out; bh->next = bh + 1; } - fsg->buffhds[NUM_BUFFERS - 1].next = &fsg->buffhds[0]; + fsg->buffhds[FSG_NUM_BUFFERS - 1].next = &fsg->buffhds[0]; /* This should reflect the actual gadget power source */ usb_gadget_set_selfpowered(gadget); - snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + snprintf(fsg_string_manufacturer, sizeof fsg_string_manufacturer, + "%s %s with %s", init_utsname()->sysname, init_utsname()->release, gadget->name); /* On a real device, serial[] would be loaded from permanent * storage. We just encode it from the driver version string. */ - for (i = 0; i < sizeof(serial) - 2; i += 2) { + for (i = 0; i < sizeof fsg_string_serial - 2; i += 2) { unsigned char c = DRIVER_VERSION[i / 2]; if (!c) break; - sprintf(&serial[i], "%02X", c); + sprintf(&fsg_string_serial[i], "%02X", c); } fsg->thread_task = kthread_create(fsg_main_thread, fsg, @@ -4133,7 +3474,7 @@ static int __init fsg_bind(struct usb_gadget *gadget) pathbuf = kmalloc(PATH_MAX, GFP_KERNEL); for (i = 0; i < fsg->nluns; ++i) { curlun = &fsg->luns[i]; - if (backing_file_is_open(curlun)) { + if (fsg_lun_is_open(curlun)) { p = NULL; if (pathbuf) { p = d_path(&curlun->filp->f_path, @@ -4203,7 +3544,7 @@ static struct usb_gadget_driver fsg_driver = { #else .speed = USB_SPEED_FULL, #endif - .function = (char *) longname, + .function = (char *) fsg_string_product, .bind = fsg_bind, .unbind = fsg_unbind, .disconnect = fsg_disconnect, @@ -4212,7 +3553,7 @@ static struct usb_gadget_driver fsg_driver = { .resume = fsg_resume, .driver = { - .name = (char *) shortname, + .name = DRIVER_NAME, .owner = THIS_MODULE, // .release = ... // .suspend = ... diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c new file mode 100644 index 000000000000..19619fbf20ac --- /dev/null +++ b/drivers/usb/gadget/mass_storage.c @@ -0,0 +1,240 @@ +/* + * mass_storage.c -- Mass Storage USB Gadget + * + * Copyright (C) 2003-2008 Alan Stern + * Copyright (C) 2009 Samsung Electronics + * Author: Michal Nazarewicz <m.nazarewicz@samsung.com> + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* + * The Mass Storage Gadget acts as a USB Mass Storage device, + * appearing to the host as a disk drive or as a CD-ROM drive. In + * addition to providing an example of a genuinely useful gadget + * driver for a USB device, it also illustrates a technique of + * double-buffering for increased throughput. Last but not least, it + * gives an easy way to probe the behavior of the Mass Storage drivers + * in a USB host. + * + * Since this file serves only administrative purposes and all the + * business logic is implemented in f_mass_storage.* file. Read + * comments in this file for more detailed description. + */ + + +#include <linux/kernel.h> +#include <linux/utsname.h> +#include <linux/usb/ch9.h> + + +/*-------------------------------------------------------------------------*/ + +#define DRIVER_DESC "Mass Storage Gadget" +#define DRIVER_VERSION "2009/09/11" + +/*-------------------------------------------------------------------------*/ + +/* + * kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ + +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" +#include "f_mass_storage.c" + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor msg_device_desc = { + .bLength = sizeof msg_device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_PER_INTERFACE, + + /* Vendor and product id can be overridden by module parameters. */ + .idVendor = cpu_to_le16(FSG_VENDOR_ID), + .idProduct = cpu_to_le16(FSG_PRODUCT_ID), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 +#define STRING_CONFIGURATION_IDX 2 + +static char manufacturer[50]; + +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = DRIVER_DESC, + [STRING_CONFIGURATION_IDX].s = "Self Powered", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + + + +/****************************** Configurations ******************************/ + +static struct fsg_module_parameters mod_data = { + .stall = 1 +}; +FSG_MODULE_PARAMETERS(/* no prefix */, mod_data); + +static unsigned long msg_registered = 0; +static void msg_cleanup(void); + +static int __init msg_do_config(struct usb_configuration *c) +{ + struct fsg_common *common; + struct fsg_config config; + int ret; + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + fsg_config_from_params(&config, &mod_data); + config.thread_exits = (void(*)(struct fsg_common*))&msg_cleanup; + common = fsg_common_init(0, c->cdev, &config); + if (IS_ERR(common)) + return PTR_ERR(common); + + ret = fsg_add(c->cdev, c, common); + fsg_common_put(common); + return ret; +} + +static struct usb_configuration msg_config_driver = { + .label = "Linux File-Backed Storage", + .bind = msg_do_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + + + +/****************************** Gadget Bind ******************************/ + + +static int __init msg_bind(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int status; + + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ + + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + return status; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + msg_device_desc.iManufacturer = status; + + status = usb_string_id(cdev); + if (status < 0) + return status; + strings_dev[STRING_PRODUCT_IDX].id = status; + msg_device_desc.iProduct = status; + + status = usb_string_id(cdev); + if (status < 0) + return status; + strings_dev[STRING_CONFIGURATION_IDX].id = status; + msg_config_driver.iConfiguration = status; + + /* register our second configuration */ + status = usb_add_config(cdev, &msg_config_driver); + if (status < 0) + return status; + + dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); + set_bit(0, &msg_registered); + return 0; +} + + +/****************************** Some noise ******************************/ + + +static struct usb_composite_driver msg_driver = { + .name = "g_mass_storage", + .dev = &msg_device_desc, + .strings = dev_strings, + .bind = msg_bind, +}; + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Michal Nazarewicz"); +MODULE_LICENSE("GPL"); + +static int __init msg_init(void) +{ + return usb_composite_register(&msg_driver); +} +module_init(msg_init); + +static void msg_cleanup(void) +{ + if (test_and_clear_bit(0, &msg_registered)) + usb_composite_unregister(&msg_driver); +} +module_exit(msg_cleanup); diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c new file mode 100644 index 000000000000..429560100b10 --- /dev/null +++ b/drivers/usb/gadget/multi.c @@ -0,0 +1,358 @@ +/* + * multi.c -- Multifunction Composite driver + * + * Copyright (C) 2008 David Brownell + * Copyright (C) 2008 Nokia Corporation + * Copyright (C) 2009 Samsung Electronics + * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include <linux/kernel.h> +#include <linux/utsname.h> + + +#if defined USB_ETH_RNDIS +# undef USB_ETH_RNDIS +#endif +#ifdef CONFIG_USB_ETH_RNDIS +# define USB_ETH_RNDIS y +#endif + + +#define DRIVER_DESC "Multifunction Composite Gadget" +#define DRIVER_VERSION "2009/07/21" + +/*-------------------------------------------------------------------------*/ + +#define MULTI_VENDOR_NUM 0x0525 /* XXX NetChip */ +#define MULTI_PRODUCT_NUM 0xa4ab /* XXX */ + +/*-------------------------------------------------------------------------*/ + +/* + * kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ + +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" + +#include "u_serial.c" +#include "f_acm.c" + +#include "f_ecm.c" +#include "f_subset.c" +#ifdef USB_ETH_RNDIS +# include "f_rndis.c" +# include "rndis.c" +#endif +#include "u_ether.c" + +#undef DBG /* u_ether.c has broken idea about macros */ +#undef VDBG /* so clean up after it */ +#undef ERROR +#undef INFO +#include "f_mass_storage.c" + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = cpu_to_le16(0x0200), + + /* .bDeviceClass = USB_CLASS_COMM, */ + /* .bDeviceSubClass = 0, */ + /* .bDeviceProtocol = 0, */ + .bDeviceClass = 0xEF, + .bDeviceSubClass = 2, + .bDeviceProtocol = 1, + /* .bMaxPacketSize0 = f(hardware) */ + + /* Vendor and product id can be overridden by module parameters. */ + .idVendor = cpu_to_le16(MULTI_VENDOR_NUM), + .idProduct = cpu_to_le16(MULTI_PRODUCT_NUM), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 + +static char manufacturer[50]; + +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = DRIVER_DESC, + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + +static u8 hostaddr[ETH_ALEN]; + + + +/****************************** Configurations ******************************/ + +static struct fsg_module_parameters mod_data = { + .stall = 1 +}; +FSG_MODULE_PARAMETERS(/* no prefix */, mod_data); + +static struct fsg_common *fsg_common; + + +#ifdef USB_ETH_RNDIS + +static int __init rndis_do_config(struct usb_configuration *c) +{ + int ret; + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + ret = rndis_bind_config(c, hostaddr); + if (ret < 0) + return ret; + + ret = acm_bind_config(c, 0); + if (ret < 0) + return ret; + + ret = fsg_add(c->cdev, c, fsg_common); + if (ret < 0) + return ret; + + return 0; +} + +static struct usb_configuration rndis_config_driver = { + .label = "Multifunction Composite (RNDIS + MS + ACM)", + .bind = rndis_do_config, + .bConfigurationValue = 2, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + +#endif + +#ifdef CONFIG_USB_G_MULTI_CDC + +static int __init cdc_do_config(struct usb_configuration *c) +{ + int ret; + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + ret = ecm_bind_config(c, hostaddr); + if (ret < 0) + return ret; + + ret = acm_bind_config(c, 0); + if (ret < 0) + return ret; + + ret = fsg_add(c->cdev, c, fsg_common); + if (ret < 0) + return ret; + if (ret < 0) + return ret; + + return 0; +} + +static struct usb_configuration cdc_config_driver = { + .label = "Multifunction Composite (CDC + MS + ACM)", + .bind = cdc_do_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + +#endif + + + +/****************************** Gadget Bind ******************************/ + + +static int __init multi_bind(struct usb_composite_dev *cdev) +{ + struct usb_gadget *gadget = cdev->gadget; + int status, gcnum; + + if (!can_support_ecm(cdev->gadget)) { + dev_err(&gadget->dev, "controller '%s' not usable\n", + gadget->name); + return -EINVAL; + } + + /* set up network link layer */ + status = gether_setup(cdev->gadget, hostaddr); + if (status < 0) + return status; + + /* set up serial link layer */ + status = gserial_setup(cdev->gadget, 1); + if (status < 0) + goto fail0; + + /* set up mass storage function */ + fsg_common = fsg_common_from_params(0, cdev, &mod_data); + if (IS_ERR(fsg_common)) { + status = PTR_ERR(fsg_common); + goto fail1; + } + + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); + else { + /* We assume that can_support_ecm() tells the truth; + * but if the controller isn't recognized at all then + * that assumption is a bit more likely to be wrong. + */ + WARNING(cdev, "controller '%s' not recognized\n", + gadget->name); + device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099); + } + + + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ + + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail2; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; + + status = usb_string_id(cdev); + if (status < 0) + goto fail2; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; + +#ifdef USB_ETH_RNDIS + /* register our first configuration */ + status = usb_add_config(cdev, &rndis_config_driver); + if (status < 0) + goto fail2; +#endif + +#ifdef CONFIG_USB_G_MULTI_CDC + /* register our second configuration */ + status = usb_add_config(cdev, &cdc_config_driver); + if (status < 0) + goto fail2; +#endif + + dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n"); + fsg_common_put(fsg_common); + return 0; + +fail2: + fsg_common_put(fsg_common); +fail1: + gserial_cleanup(); +fail0: + gether_cleanup(); + return status; +} + +static int __exit multi_unbind(struct usb_composite_dev *cdev) +{ + gserial_cleanup(); + gether_cleanup(); + return 0; +} + + +/****************************** Some noise ******************************/ + + +static struct usb_composite_driver multi_driver = { + .name = "g_multi", + .dev = &device_desc, + .strings = dev_strings, + .bind = multi_bind, + .unbind = __exit_p(multi_unbind), +}; + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Michal Nazarewicz"); +MODULE_LICENSE("GPL"); + +static int __init g_multi_init(void) +{ + return usb_composite_register(&multi_driver); +} +module_init(g_multi_init); + +static void __exit g_multi_cleanup(void) +{ + usb_composite_unregister(&multi_driver); +} +module_exit(g_multi_cleanup); diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c new file mode 100644 index 000000000000..868d8ee86756 --- /dev/null +++ b/drivers/usb/gadget/storage_common.c @@ -0,0 +1,778 @@ +/* + * storage_common.c -- Common definitions for mass storage functionality + * + * Copyright (C) 2003-2008 Alan Stern + * Copyeight (C) 2009 Samsung Electronics + * Author: Michal Nazarewicz (m.nazarewicz@samsung.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +/* + * This file requires the following identifiers used in USB strings to + * be defined (each of type pointer to char): + * - fsg_string_manufacturer -- name of the manufacturer + * - fsg_string_product -- name of the product + * - fsg_string_serial -- product's serial + * - fsg_string_config -- name of the configuration + * - fsg_string_interface -- name of the interface + * The first four are only needed when FSG_DESCRIPTORS_DEVICE_STRINGS + * macro is defined prior to including this file. + */ + +/* + * When FSG_NO_INTR_EP is defined fsg_fs_intr_in_desc and + * fsg_hs_intr_in_desc objects as well as + * FSG_FS_FUNCTION_PRE_EP_ENTRIES and FSG_HS_FUNCTION_PRE_EP_ENTRIES + * macros are not defined. + * + * When FSG_NO_DEVICE_STRINGS is defined FSG_STRING_MANUFACTURER, + * FSG_STRING_PRODUCT, FSG_STRING_SERIAL and FSG_STRING_CONFIG are not + * defined (as well as corresponding entries in string tables are + * missing) and FSG_STRING_INTERFACE has value of zero. + * + * When FSG_NO_OTG is defined fsg_otg_desc won't be defined. + */ + +/* + * When FSG_BUFFHD_STATIC_BUFFER is defined when this file is included + * the fsg_buffhd structure's buf field will be an array of FSG_BUFLEN + * characters rather then a pointer to void. + */ + + +#include <asm/unaligned.h> + + +/* Thanks to NetChip Technologies for donating this product ID. + * + * DO NOT REUSE THESE IDs with any other driver!! Ever!! + * Instead: allocate your own, using normal USB-IF procedures. */ +#define FSG_VENDOR_ID 0x0525 /* NetChip */ +#define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */ + + +/*-------------------------------------------------------------------------*/ + + +#ifndef DEBUG +#undef VERBOSE_DEBUG +#undef DUMP_MSGS +#endif /* !DEBUG */ + +#ifdef VERBOSE_DEBUG +#define VLDBG LDBG +#else +#define VLDBG(lun, fmt, args...) do { } while (0) +#endif /* VERBOSE_DEBUG */ + +#define LDBG(lun, fmt, args...) dev_dbg (&(lun)->dev, fmt, ## args) +#define LERROR(lun, fmt, args...) dev_err (&(lun)->dev, fmt, ## args) +#define LWARN(lun, fmt, args...) dev_warn(&(lun)->dev, fmt, ## args) +#define LINFO(lun, fmt, args...) dev_info(&(lun)->dev, fmt, ## args) + +/* Keep those macros in sync with thos in + * include/linux/ubs/composite.h or else GCC will complain. If they + * are identical (the same names of arguments, white spaces in the + * same places) GCC will allow redefinition otherwise (even if some + * white space is removed or added) warning will be issued. No + * checking if those symbols is defined is performed because warning + * is desired when those macros were defined by someone else to mean + * something else. */ +#define DBG(d, fmt, args...) dev_dbg(&(d)->gadget->dev , fmt , ## args) +#define VDBG(d, fmt, args...) dev_vdbg(&(d)->gadget->dev , fmt , ## args) +#define ERROR(d, fmt, args...) dev_err(&(d)->gadget->dev , fmt , ## args) +#define WARNING(d, fmt, args...) dev_warn(&(d)->gadget->dev , fmt , ## args) +#define INFO(d, fmt, args...) dev_info(&(d)->gadget->dev , fmt , ## args) + + + +#ifdef DUMP_MSGS + +# define dump_msg(fsg, /* const char * */ label, \ + /* const u8 * */ buf, /* unsigned */ length) do { \ + if (length < 512) { \ + DBG(fsg, "%s, length %u:\n", label, length); \ + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \ + 16, 1, buf, length, 0); \ + } \ +} while (0) + +# define dump_cdb(fsg) do { } while (0) + +#else + +# define dump_msg(fsg, /* const char * */ label, \ + /* const u8 * */ buf, /* unsigned */ length) do { } while (0) + +# ifdef VERBOSE_DEBUG + +# define dump_cdb(fsg) \ + print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \ + 16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \ + +# else + +# define dump_cdb(fsg) do { } while (0) + +# endif /* VERBOSE_DEBUG */ + +#endif /* DUMP_MSGS */ + + + + + +/*-------------------------------------------------------------------------*/ + +/* SCSI device types */ +#define TYPE_DISK 0x00 +#define TYPE_CDROM 0x05 + +/* USB protocol value = the transport method */ +#define USB_PR_CBI 0x00 /* Control/Bulk/Interrupt */ +#define USB_PR_CB 0x01 /* Control/Bulk w/o interrupt */ +#define USB_PR_BULK 0x50 /* Bulk-only */ + +/* USB subclass value = the protocol encapsulation */ +#define USB_SC_RBC 0x01 /* Reduced Block Commands (flash) */ +#define USB_SC_8020 0x02 /* SFF-8020i, MMC-2, ATAPI (CD-ROM) */ +#define USB_SC_QIC 0x03 /* QIC-157 (tape) */ +#define USB_SC_UFI 0x04 /* UFI (floppy) */ +#define USB_SC_8070 0x05 /* SFF-8070i (removable) */ +#define USB_SC_SCSI 0x06 /* Transparent SCSI */ + +/* Bulk-only data structures */ + +/* Command Block Wrapper */ +struct fsg_bulk_cb_wrap { + __le32 Signature; /* Contains 'USBC' */ + u32 Tag; /* Unique per command id */ + __le32 DataTransferLength; /* Size of the data */ + u8 Flags; /* Direction in bit 7 */ + u8 Lun; /* LUN (normally 0) */ + u8 Length; /* Of the CDB, <= MAX_COMMAND_SIZE */ + u8 CDB[16]; /* Command Data Block */ +}; + +#define USB_BULK_CB_WRAP_LEN 31 +#define USB_BULK_CB_SIG 0x43425355 /* Spells out USBC */ +#define USB_BULK_IN_FLAG 0x80 + +/* Command Status Wrapper */ +struct bulk_cs_wrap { + __le32 Signature; /* Should = 'USBS' */ + u32 Tag; /* Same as original command */ + __le32 Residue; /* Amount not transferred */ + u8 Status; /* See below */ +}; + +#define USB_BULK_CS_WRAP_LEN 13 +#define USB_BULK_CS_SIG 0x53425355 /* Spells out 'USBS' */ +#define USB_STATUS_PASS 0 +#define USB_STATUS_FAIL 1 +#define USB_STATUS_PHASE_ERROR 2 + +/* Bulk-only class specific requests */ +#define USB_BULK_RESET_REQUEST 0xff +#define USB_BULK_GET_MAX_LUN_REQUEST 0xfe + + +/* CBI Interrupt data structure */ +struct interrupt_data { + u8 bType; + u8 bValue; +}; + +#define CBI_INTERRUPT_DATA_LEN 2 + +/* CBI Accept Device-Specific Command request */ +#define USB_CBI_ADSC_REQUEST 0x00 + + +/* Length of a SCSI Command Data Block */ +#define MAX_COMMAND_SIZE 16 + +/* SCSI commands that we recognize */ +#define SC_FORMAT_UNIT 0x04 +#define SC_INQUIRY 0x12 +#define SC_MODE_SELECT_6 0x15 +#define SC_MODE_SELECT_10 0x55 +#define SC_MODE_SENSE_6 0x1a +#define SC_MODE_SENSE_10 0x5a +#define SC_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e +#define SC_READ_6 0x08 +#define SC_READ_10 0x28 +#define SC_READ_12 0xa8 +#define SC_READ_CAPACITY 0x25 +#define SC_READ_FORMAT_CAPACITIES 0x23 +#define SC_READ_HEADER 0x44 +#define SC_READ_TOC 0x43 +#define SC_RELEASE 0x17 +#define SC_REQUEST_SENSE 0x03 +#define SC_RESERVE 0x16 +#define SC_SEND_DIAGNOSTIC 0x1d +#define SC_START_STOP_UNIT 0x1b +#define SC_SYNCHRONIZE_CACHE 0x35 +#define SC_TEST_UNIT_READY 0x00 +#define SC_VERIFY 0x2f +#define SC_WRITE_6 0x0a +#define SC_WRITE_10 0x2a +#define SC_WRITE_12 0xaa + +/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */ +#define SS_NO_SENSE 0 +#define SS_COMMUNICATION_FAILURE 0x040800 +#define SS_INVALID_COMMAND 0x052000 +#define SS_INVALID_FIELD_IN_CDB 0x052400 +#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100 +#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500 +#define SS_MEDIUM_NOT_PRESENT 0x023a00 +#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302 +#define SS_NOT_READY_TO_READY_TRANSITION 0x062800 +#define SS_RESET_OCCURRED 0x062900 +#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900 +#define SS_UNRECOVERED_READ_ERROR 0x031100 +#define SS_WRITE_ERROR 0x030c02 +#define SS_WRITE_PROTECTED 0x072700 + +#define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */ +#define ASC(x) ((u8) ((x) >> 8)) +#define ASCQ(x) ((u8) (x)) + + +/*-------------------------------------------------------------------------*/ + + +struct fsg_lun { + struct file *filp; + loff_t file_length; + loff_t num_sectors; + + unsigned int initially_ro:1; + unsigned int ro:1; + unsigned int removable:1; + unsigned int cdrom:1; + unsigned int prevent_medium_removal:1; + unsigned int registered:1; + unsigned int info_valid:1; + + u32 sense_data; + u32 sense_data_info; + u32 unit_attention_data; + + struct device dev; +}; + +#define fsg_lun_is_open(curlun) ((curlun)->filp != NULL) + +static struct fsg_lun *fsg_lun_from_dev(struct device *dev) +{ + return container_of(dev, struct fsg_lun, dev); +} + + +/* Big enough to hold our biggest descriptor */ +#define EP0_BUFSIZE 256 +#define DELAYED_STATUS (EP0_BUFSIZE + 999) /* An impossibly large value */ + +/* Number of buffers we will use. 2 is enough for double-buffering */ +#define FSG_NUM_BUFFERS 2 + +/* Default size of buffer length. */ +#define FSG_BUFLEN ((u32)16384) + +/* Maximal number of LUNs supported in mass storage function */ +#define FSG_MAX_LUNS 8 + +enum fsg_buffer_state { + BUF_STATE_EMPTY = 0, + BUF_STATE_FULL, + BUF_STATE_BUSY +}; + +struct fsg_buffhd { +#ifdef FSG_BUFFHD_STATIC_BUFFER + char buf[FSG_BUFLEN]; +#else + void *buf; +#endif + enum fsg_buffer_state state; + struct fsg_buffhd *next; + + /* The NetChip 2280 is faster, and handles some protocol faults + * better, if we don't submit any short bulk-out read requests. + * So we will record the intended request length here. */ + unsigned int bulk_out_intended_length; + + struct usb_request *inreq; + int inreq_busy; + struct usb_request *outreq; + int outreq_busy; +}; + +enum fsg_state { + /* This one isn't used anywhere */ + FSG_STATE_COMMAND_PHASE = -10, + FSG_STATE_DATA_PHASE, + FSG_STATE_STATUS_PHASE, + + FSG_STATE_IDLE = 0, + FSG_STATE_ABORT_BULK_OUT, + FSG_STATE_RESET, + FSG_STATE_INTERFACE_CHANGE, + FSG_STATE_CONFIG_CHANGE, + FSG_STATE_DISCONNECT, + FSG_STATE_EXIT, + FSG_STATE_TERMINATED +}; + +enum data_direction { + DATA_DIR_UNKNOWN = 0, + DATA_DIR_FROM_HOST, + DATA_DIR_TO_HOST, + DATA_DIR_NONE +}; + + +/*-------------------------------------------------------------------------*/ + + +static inline u32 get_unaligned_be24(u8 *buf) +{ + return 0xffffff & (u32) get_unaligned_be32(buf - 1); +} + + +/*-------------------------------------------------------------------------*/ + + +enum { +#ifndef FSG_NO_DEVICE_STRINGS + FSG_STRING_MANUFACTURER = 1, + FSG_STRING_PRODUCT, + FSG_STRING_SERIAL, + FSG_STRING_CONFIG, +#endif + FSG_STRING_INTERFACE +}; + + +#ifndef FSG_NO_OTG +static struct usb_otg_descriptor +fsg_otg_desc = { + .bLength = sizeof fsg_otg_desc, + .bDescriptorType = USB_DT_OTG, + + .bmAttributes = USB_OTG_SRP, +}; +#endif + +/* There is only one interface. */ + +static struct usb_interface_descriptor +fsg_intf_desc = { + .bLength = sizeof fsg_intf_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 2, /* Adjusted during fsg_bind() */ + .bInterfaceClass = USB_CLASS_MASS_STORAGE, + .bInterfaceSubClass = USB_SC_SCSI, /* Adjusted during fsg_bind() */ + .bInterfaceProtocol = USB_PR_BULK, /* Adjusted during fsg_bind() */ + .iInterface = FSG_STRING_INTERFACE, +}; + +/* Three full-speed endpoint descriptors: bulk-in, bulk-out, + * and interrupt-in. */ + +static struct usb_endpoint_descriptor +fsg_fs_bulk_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + /* wMaxPacketSize set by autoconfiguration */ +}; + +static struct usb_endpoint_descriptor +fsg_fs_bulk_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + /* wMaxPacketSize set by autoconfiguration */ +}; + +#ifndef FSG_NO_INTR_EP + +static struct usb_endpoint_descriptor +fsg_fs_intr_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(2), + .bInterval = 32, /* frames -> 32 ms */ +}; + +#ifndef FSG_NO_OTG +# define FSG_FS_FUNCTION_PRE_EP_ENTRIES 2 +#else +# define FSG_FS_FUNCTION_PRE_EP_ENTRIES 1 +#endif + +#endif + +static struct usb_descriptor_header *fsg_fs_function[] = { +#ifndef FSG_NO_OTG + (struct usb_descriptor_header *) &fsg_otg_desc, +#endif + (struct usb_descriptor_header *) &fsg_intf_desc, + (struct usb_descriptor_header *) &fsg_fs_bulk_in_desc, + (struct usb_descriptor_header *) &fsg_fs_bulk_out_desc, +#ifndef FSG_NO_INTR_EP + (struct usb_descriptor_header *) &fsg_fs_intr_in_desc, +#endif + NULL, +}; + + +/* + * USB 2.0 devices need to expose both high speed and full speed + * descriptors, unless they only run at full speed. + * + * That means alternate endpoint descriptors (bigger packets) + * and a "device qualifier" ... plus more construction options + * for the config descriptor. + */ +static struct usb_endpoint_descriptor +fsg_hs_bulk_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + /* bEndpointAddress copied from fs_bulk_in_desc during fsg_bind() */ + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor +fsg_hs_bulk_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + /* bEndpointAddress copied from fs_bulk_out_desc during fsg_bind() */ + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), + .bInterval = 1, /* NAK every 1 uframe */ +}; + +#ifndef FSG_NO_INTR_EP + +static struct usb_endpoint_descriptor +fsg_hs_intr_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */ + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(2), + .bInterval = 9, /* 2**(9-1) = 256 uframes -> 32 ms */ +}; + +#ifndef FSG_NO_OTG +# define FSG_HS_FUNCTION_PRE_EP_ENTRIES 2 +#else +# define FSG_HS_FUNCTION_PRE_EP_ENTRIES 1 +#endif + +#endif + +static struct usb_descriptor_header *fsg_hs_function[] = { +#ifndef FSG_NO_OTG + (struct usb_descriptor_header *) &fsg_otg_desc, +#endif + (struct usb_descriptor_header *) &fsg_intf_desc, + (struct usb_descriptor_header *) &fsg_hs_bulk_in_desc, + (struct usb_descriptor_header *) &fsg_hs_bulk_out_desc, +#ifndef FSG_NO_INTR_EP + (struct usb_descriptor_header *) &fsg_hs_intr_in_desc, +#endif + NULL, +}; + +/* Maxpacket and other transfer characteristics vary by speed. */ +static struct usb_endpoint_descriptor * +fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs, + struct usb_endpoint_descriptor *hs) +{ + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + return hs; + return fs; +} + + +/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */ +static struct usb_string fsg_strings[] = { +#ifndef FSG_NO_DEVICE_STRINGS + {FSG_STRING_MANUFACTURER, fsg_string_manufacturer}, + {FSG_STRING_PRODUCT, fsg_string_product}, + {FSG_STRING_SERIAL, fsg_string_serial}, + {FSG_STRING_CONFIG, fsg_string_config}, +#endif + {FSG_STRING_INTERFACE, fsg_string_interface}, + {} +}; + +static struct usb_gadget_strings fsg_stringtab = { + .language = 0x0409, /* en-us */ + .strings = fsg_strings, +}; + + + /*-------------------------------------------------------------------------*/ + +/* If the next two routines are called while the gadget is registered, + * the caller must own fsg->filesem for writing. */ + +static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) +{ + int ro; + struct file *filp = NULL; + int rc = -EINVAL; + struct inode *inode = NULL; + loff_t size; + loff_t num_sectors; + loff_t min_sectors; + + /* R/W if we can, R/O if we must */ + ro = curlun->initially_ro; + if (!ro) { + filp = filp_open(filename, O_RDWR | O_LARGEFILE, 0); + if (-EROFS == PTR_ERR(filp)) + ro = 1; + } + if (ro) + filp = filp_open(filename, O_RDONLY | O_LARGEFILE, 0); + if (IS_ERR(filp)) { + LINFO(curlun, "unable to open backing file: %s\n", filename); + return PTR_ERR(filp); + } + + if (!(filp->f_mode & FMODE_WRITE)) + ro = 1; + + if (filp->f_path.dentry) + inode = filp->f_path.dentry->d_inode; + if (inode && S_ISBLK(inode->i_mode)) { + if (bdev_read_only(inode->i_bdev)) + ro = 1; + } else if (!inode || !S_ISREG(inode->i_mode)) { + LINFO(curlun, "invalid file type: %s\n", filename); + goto out; + } + + /* If we can't read the file, it's no good. + * If we can't write the file, use it read-only. */ + if (!filp->f_op || !(filp->f_op->read || filp->f_op->aio_read)) { + LINFO(curlun, "file not readable: %s\n", filename); + goto out; + } + if (!(filp->f_op->write || filp->f_op->aio_write)) + ro = 1; + + size = i_size_read(inode->i_mapping->host); + if (size < 0) { + LINFO(curlun, "unable to find file size: %s\n", filename); + rc = (int) size; + goto out; + } + num_sectors = size >> 9; /* File size in 512-byte blocks */ + min_sectors = 1; + if (curlun->cdrom) { + num_sectors &= ~3; /* Reduce to a multiple of 2048 */ + min_sectors = 300*4; /* Smallest track is 300 frames */ + if (num_sectors >= 256*60*75*4) { + num_sectors = (256*60*75 - 1) * 4; + LINFO(curlun, "file too big: %s\n", filename); + LINFO(curlun, "using only first %d blocks\n", + (int) num_sectors); + } + } + if (num_sectors < min_sectors) { + LINFO(curlun, "file too small: %s\n", filename); + rc = -ETOOSMALL; + goto out; + } + + get_file(filp); + curlun->ro = ro; + curlun->filp = filp; + curlun->file_length = size; + curlun->num_sectors = num_sectors; + LDBG(curlun, "open backing file: %s\n", filename); + rc = 0; + +out: + filp_close(filp, current->files); + return rc; +} + + +static void fsg_lun_close(struct fsg_lun *curlun) +{ + if (curlun->filp) { + LDBG(curlun, "close backing file\n"); + fput(curlun->filp); + curlun->filp = NULL; + } +} + + +/*-------------------------------------------------------------------------*/ + +/* Sync the file data, don't bother with the metadata. + * This code was copied from fs/buffer.c:sys_fdatasync(). */ +static int fsg_lun_fsync_sub(struct fsg_lun *curlun) +{ + struct file *filp = curlun->filp; + + if (curlun->ro || !filp) + return 0; + return vfs_fsync(filp, filp->f_path.dentry, 1); +} + +static void store_cdrom_address(u8 *dest, int msf, u32 addr) +{ + if (msf) { + /* Convert to Minutes-Seconds-Frames */ + addr >>= 2; /* Convert to 2048-byte frames */ + addr += 2*75; /* Lead-in occupies 2 seconds */ + dest[3] = addr % 75; /* Frames */ + addr /= 75; + dest[2] = addr % 60; /* Seconds */ + addr /= 60; + dest[1] = addr; /* Minutes */ + dest[0] = 0; /* Reserved */ + } else { + /* Absolute sector */ + put_unaligned_be32(addr, dest); + } +} + + +/*-------------------------------------------------------------------------*/ + + +static ssize_t fsg_show_ro(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + + return sprintf(buf, "%d\n", fsg_lun_is_open(curlun) + ? curlun->ro + : curlun->initially_ro); +} + +static ssize_t fsg_show_file(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + char *p; + ssize_t rc; + + down_read(filesem); + if (fsg_lun_is_open(curlun)) { /* Get the complete pathname */ + p = d_path(&curlun->filp->f_path, buf, PAGE_SIZE - 1); + if (IS_ERR(p)) + rc = PTR_ERR(p); + else { + rc = strlen(p); + memmove(buf, p, rc); + buf[rc] = '\n'; /* Add a newline */ + buf[++rc] = 0; + } + } else { /* No file, return 0 bytes */ + *buf = 0; + rc = 0; + } + up_read(filesem); + return rc; +} + + +static ssize_t fsg_store_ro(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + ssize_t rc = count; + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + int i; + + if (sscanf(buf, "%d", &i) != 1) + return -EINVAL; + + /* Allow the write-enable status to change only while the backing file + * is closed. */ + down_read(filesem); + if (fsg_lun_is_open(curlun)) { + LDBG(curlun, "read-only status change prevented\n"); + rc = -EBUSY; + } else { + curlun->ro = !!i; + curlun->initially_ro = !!i; + LDBG(curlun, "read-only status set to %d\n", curlun->ro); + } + up_read(filesem); + return rc; +} + +static ssize_t fsg_store_file(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fsg_lun *curlun = fsg_lun_from_dev(dev); + struct rw_semaphore *filesem = dev_get_drvdata(dev); + int rc = 0; + + if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) { + LDBG(curlun, "eject attempt prevented\n"); + return -EBUSY; /* "Door is locked" */ + } + + /* Remove a trailing newline */ + if (count > 0 && buf[count-1] == '\n') + ((char *) buf)[count-1] = 0; /* Ugh! */ + + /* Eject current medium */ + down_write(filesem); + if (fsg_lun_is_open(curlun)) { + fsg_lun_close(curlun); + curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT; + } + + /* Load new medium */ + if (count > 0 && buf[0]) { + rc = fsg_lun_open(curlun, buf); + if (rc == 0) + curlun->unit_attention_data = + SS_NOT_READY_TO_READY_TRANSITION; + } + up_write(filesem); + return (rc < 0 ? rc : count); +} diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h index 91b39ffdf6ea..fd55f450bc0e 100644 --- a/drivers/usb/gadget/u_ether.h +++ b/drivers/usb/gadget/u_ether.h @@ -112,7 +112,7 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); int eem_bind_config(struct usb_configuration *c); -#ifdef CONFIG_USB_ETH_RNDIS +#ifdef USB_ETH_RNDIS int rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 9b43b226817f..2678a1624fcc 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -90,14 +90,25 @@ config USB_EHCI_TT_NEWSCHED config USB_EHCI_BIG_ENDIAN_MMIO bool - depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || ARCH_IXP4XX) + depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || ARCH_IXP4XX || XPS_USB_HCD_XILINX) default y config USB_EHCI_BIG_ENDIAN_DESC bool - depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX) + depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX || XPS_USB_HCD_XILINX) default y +config XPS_USB_HCD_XILINX + bool "Use Xilinx usb host EHCI controller core" + depends on USB_EHCI_HCD && (PPC32 || MICROBLAZE) + select USB_EHCI_BIG_ENDIAN_DESC + select USB_EHCI_BIG_ENDIAN_MMIO + ---help--- + Xilinx xps USB host controller core is EHCI compilant and has + transaction translator built-in. It can be configured to either + support both high speed and full speed devices, or high speed + devices only. + config USB_EHCI_FSL bool "Support for Freescale on-chip EHCI USB controller" depends on USB_EHCI_HCD && FSL_SOC @@ -105,6 +116,13 @@ config USB_EHCI_FSL ---help--- Variation of ARC USB block used in some Freescale chips. +config USB_EHCI_MXC + bool "Support for Freescale on-chip EHCI USB controller" + depends on USB_EHCI_HCD && ARCH_MXC + select USB_EHCI_ROOT_HUB_TT + ---help--- + Variation of ARC USB block used in some Freescale chips. + config USB_EHCI_HCD_PPC_OF bool "EHCI support for PPC USB controller on OF platform bus" depends on USB_EHCI_HCD && PPC_OF diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index d8f4aaa616f2..5859522d6edd 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -549,7 +549,7 @@ static int ehci_init(struct usb_hcd *hcd) /* controllers may cache some of the periodic schedule ... */ hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params); if (HCC_ISOC_CACHE(hcc_params)) // full frame cache - ehci->i_thresh = 8; + ehci->i_thresh = 2 + 8; else // N microframes cached ehci->i_thresh = 2 + HCC_ISOC_THRES(hcc_params); @@ -605,6 +605,8 @@ static int ehci_init(struct usb_hcd *hcd) } ehci->command = temp; + /* Accept arbitrarily long scatter-gather lists */ + hcd->self.sg_tablesize = ~0; return 0; } @@ -1105,11 +1107,21 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_fsl_driver #endif +#ifdef CONFIG_USB_EHCI_MXC +#include "ehci-mxc.c" +#define PLATFORM_DRIVER ehci_mxc_driver +#endif + #ifdef CONFIG_SOC_AU1200 #include "ehci-au1xxx.c" #define PLATFORM_DRIVER ehci_hcd_au1xxx_driver #endif +#ifdef CONFIG_ARCH_OMAP34XX +#include "ehci-omap.c" +#define PLATFORM_DRIVER ehci_hcd_omap_driver +#endif + #ifdef CONFIG_PPC_PS3 #include "ehci-ps3.c" #define PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver @@ -1120,6 +1132,11 @@ MODULE_LICENSE ("GPL"); #define OF_PLATFORM_DRIVER ehci_hcd_ppc_of_driver #endif +#ifdef CONFIG_XPS_USB_HCD_XILINX +#include "ehci-xilinx-of.c" +#define OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver +#endif + #ifdef CONFIG_PLAT_ORION #include "ehci-orion.c" #define PLATFORM_DRIVER ehci_orion_driver diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 1b6f1c0e5cee..2c6571c05f35 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -236,7 +236,7 @@ static int ehci_bus_resume (struct usb_hcd *hcd) } if (unlikely(ehci->debug)) { - if (ehci->debug && !dbgp_reset_prep()) + if (!dbgp_reset_prep()) ehci->debug = NULL; else dbgp_external_startup(); diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c new file mode 100644 index 000000000000..35c56f40bdbb --- /dev/null +++ b/drivers/usb/host/ehci-mxc.c @@ -0,0 +1,296 @@ +/* + * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix + * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/usb/otg.h> + +#include <mach/mxc_ehci.h> + +#define ULPI_VIEWPORT_OFFSET 0x170 +#define PORTSC_OFFSET 0x184 +#define USBMODE_OFFSET 0x1a8 +#define USBMODE_CM_HOST 3 + +struct ehci_mxc_priv { + struct clk *usbclk, *ahbclk; + struct usb_hcd *hcd; +}; + +/* called during probe() after chip reset completes */ +static int ehci_mxc_setup(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + + /* EHCI registers start at offset 0x100 */ + ehci->caps = hcd->regs + 0x100; + ehci->regs = hcd->regs + 0x100 + + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + dbg_hcs_params(ehci, "reset"); + dbg_hcc_params(ehci, "reset"); + + /* cache this readonly data; minimize chip reads */ + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + + retval = ehci_halt(ehci); + if (retval) + return retval; + + /* data structure init */ + retval = ehci_init(hcd); + if (retval) + return retval; + + hcd->has_tt = 1; + + ehci->sbrn = 0x20; + + ehci_reset(ehci); + + ehci_port_power(ehci, 0); + return 0; +} + +static const struct hc_driver ehci_mxc_hc_driver = { + .description = hcd_name, + .product_desc = "Freescale On-Chip EHCI Host Controller", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_USB2 | HCD_MEMORY, + + /* + * basic lifecycle operations + */ + .reset = ehci_mxc_setup, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, +}; + +static int ehci_mxc_drv_probe(struct platform_device *pdev) +{ + struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; + struct usb_hcd *hcd; + struct resource *res; + int irq, ret, temp; + struct ehci_mxc_priv *priv; + struct device *dev = &pdev->dev; + + dev_info(&pdev->dev, "initializing i.MX USB Controller\n"); + + if (!pdata) { + dev_err(dev, "No platform data given, bailing out.\n"); + return -EINVAL; + } + + irq = platform_get_irq(pdev, 0); + + hcd = usb_create_hcd(&ehci_mxc_hc_driver, dev, dev_name(dev)); + if (!hcd) + return -ENOMEM; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto err_alloc; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "Found HC with no register addr. Check setup!\n"); + ret = -ENODEV; + goto err_get_resource; + } + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + dev_dbg(dev, "controller already in use\n"); + ret = -EBUSY; + goto err_request_mem; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + dev_err(dev, "error mapping memory\n"); + ret = -EFAULT; + goto err_ioremap; + } + + /* enable clocks */ + priv->usbclk = clk_get(dev, "usb"); + if (IS_ERR(priv->usbclk)) { + ret = PTR_ERR(priv->usbclk); + goto err_clk; + } + clk_enable(priv->usbclk); + + if (!cpu_is_mx35()) { + priv->ahbclk = clk_get(dev, "usb_ahb"); + if (IS_ERR(priv->ahbclk)) { + ret = PTR_ERR(priv->ahbclk); + goto err_clk_ahb; + } + clk_enable(priv->ahbclk); + } + + /* set USBMODE to host mode */ + temp = readl(hcd->regs + USBMODE_OFFSET); + writel(temp | USBMODE_CM_HOST, hcd->regs + USBMODE_OFFSET); + + /* set up the PORTSCx register */ + writel(pdata->portsc, hcd->regs + PORTSC_OFFSET); + mdelay(10); + + /* setup USBCONTROL. */ + ret = mxc_set_usbcontrol(pdev->id, pdata->flags); + if (ret < 0) + goto err_init; + + /* call platform specific init function */ + if (pdata->init) { + ret = pdata->init(pdev); + if (ret) { + dev_err(dev, "platform init failed\n"); + goto err_init; + } + } + + /* most platforms need some time to settle changed IO settings */ + mdelay(10); + + /* Initialize the transceiver */ + if (pdata->otg) { + pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET; + if (otg_init(pdata->otg) != 0) + dev_err(dev, "unable to init transceiver\n"); + else if (otg_set_vbus(pdata->otg, 1) != 0) + dev_err(dev, "unable to enable vbus on transceiver\n"); + } + + priv->hcd = hcd; + platform_set_drvdata(pdev, priv); + + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); + if (ret) + goto err_add; + + return 0; + +err_add: + if (pdata && pdata->exit) + pdata->exit(pdev); +err_init: + if (priv->ahbclk) { + clk_disable(priv->ahbclk); + clk_put(priv->ahbclk); + } +err_clk_ahb: + clk_disable(priv->usbclk); + clk_put(priv->usbclk); +err_clk: + iounmap(hcd->regs); +err_ioremap: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +err_request_mem: +err_get_resource: + kfree(priv); +err_alloc: + usb_put_hcd(hcd); + return ret; +} + +static int __exit ehci_mxc_drv_remove(struct platform_device *pdev) +{ + struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; + struct ehci_mxc_priv *priv = platform_get_drvdata(pdev); + struct usb_hcd *hcd = priv->hcd; + + if (pdata && pdata->exit) + pdata->exit(pdev); + + if (pdata->otg) + otg_shutdown(pdata->otg); + + usb_remove_hcd(hcd); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); + platform_set_drvdata(pdev, NULL); + + clk_disable(priv->usbclk); + clk_put(priv->usbclk); + if (priv->ahbclk) { + clk_disable(priv->ahbclk); + clk_put(priv->ahbclk); + } + + kfree(priv); + + return 0; +} + +static void ehci_mxc_drv_shutdown(struct platform_device *pdev) +{ + struct ehci_mxc_priv *priv = platform_get_drvdata(pdev); + struct usb_hcd *hcd = priv->hcd; + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); +} + +MODULE_ALIAS("platform:mxc-ehci"); + +static struct platform_driver ehci_mxc_driver = { + .probe = ehci_mxc_drv_probe, + .remove = __exit_p(ehci_mxc_drv_remove), + .shutdown = ehci_mxc_drv_shutdown, + .driver = { + .name = "mxc-ehci", + }, +}; diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c new file mode 100644 index 000000000000..12f1ad2fd0e8 --- /dev/null +++ b/drivers/usb/host/ehci-omap.c @@ -0,0 +1,756 @@ +/* + * ehci-omap.c - driver for USBHOST on OMAP 34xx processor + * + * Bus Glue for OMAP34xx USBHOST 3 port EHCI controller + * Tested on OMAP3430 ES2.0 SDP + * + * Copyright (C) 2007-2008 Texas Instruments, Inc. + * Author: Vikram Pandita <vikram.pandita@ti.com> + * + * Copyright (C) 2009 Nokia Corporation + * Contact: Felipe Balbi <felipe.balbi@nokia.com> + * + * Based on "ehci-fsl.c" and "ehci-au1xxx.c" ehci glue layers + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * TODO (last updated Feb 23rd, 2009): + * - add kernel-doc + * - enable AUTOIDLE + * - move DPLL5 programming to clock fw + * - add suspend/resume + * - move workarounds to board-files + */ + +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/gpio.h> +#include <mach/usb.h> + +/* + * OMAP USBHOST Register addresses: VIRTUAL ADDRESSES + * Use ehci_omap_readl()/ehci_omap_writel() functions + */ + +/* TLL Register Set */ +#define OMAP_USBTLL_REVISION (0x00) +#define OMAP_USBTLL_SYSCONFIG (0x10) +#define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8) +#define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3) +#define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2) +#define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1) +#define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0) + +#define OMAP_USBTLL_SYSSTATUS (0x14) +#define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0) + +#define OMAP_USBTLL_IRQSTATUS (0x18) +#define OMAP_USBTLL_IRQENABLE (0x1C) + +#define OMAP_TLL_SHARED_CONF (0x30) +#define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6) +#define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5) +#define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2) +#define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1) +#define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0) + +#define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num) +#define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11) +#define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10) +#define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9) +#define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8) +#define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0) + +#define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num) +#define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num) +#define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num) +#define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num) +#define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num) +#define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num) +#define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num) +#define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num) +#define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num) + +#define OMAP_TLL_CHANNEL_COUNT 3 +#define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 1) +#define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 2) +#define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 4) + +/* UHH Register Set */ +#define OMAP_UHH_REVISION (0x00) +#define OMAP_UHH_SYSCONFIG (0x10) +#define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12) +#define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8) +#define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3) +#define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2) +#define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1) +#define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0) + +#define OMAP_UHH_SYSSTATUS (0x14) +#define OMAP_UHH_HOSTCONFIG (0x40) +#define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0) +#define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0) +#define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11) +#define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12) +#define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2) +#define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3) +#define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4) +#define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5) +#define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8) +#define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9) +#define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10) + +#define OMAP_UHH_DEBUG_CSR (0x44) + +/* EHCI Register Set */ +#define EHCI_INSNREG05_ULPI (0xA4) +#define EHCI_INSNREG05_ULPI_CONTROL_SHIFT 31 +#define EHCI_INSNREG05_ULPI_PORTSEL_SHIFT 24 +#define EHCI_INSNREG05_ULPI_OPSEL_SHIFT 22 +#define EHCI_INSNREG05_ULPI_REGADD_SHIFT 16 +#define EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT 8 +#define EHCI_INSNREG05_ULPI_WRDATA_SHIFT 0 + +/*-------------------------------------------------------------------------*/ + +static inline void ehci_omap_writel(void __iomem *base, u32 reg, u32 val) +{ + __raw_writel(val, base + reg); +} + +static inline u32 ehci_omap_readl(void __iomem *base, u32 reg) +{ + return __raw_readl(base + reg); +} + +static inline void ehci_omap_writeb(void __iomem *base, u8 reg, u8 val) +{ + __raw_writeb(val, base + reg); +} + +static inline u8 ehci_omap_readb(void __iomem *base, u8 reg) +{ + return __raw_readb(base + reg); +} + +/*-------------------------------------------------------------------------*/ + +struct ehci_hcd_omap { + struct ehci_hcd *ehci; + struct device *dev; + + struct clk *usbhost_ick; + struct clk *usbhost2_120m_fck; + struct clk *usbhost1_48m_fck; + struct clk *usbtll_fck; + struct clk *usbtll_ick; + + /* FIXME the following two workarounds are + * board specific not silicon-specific so these + * should be moved to board-file instead. + * + * Maybe someone from TI will know better which + * board is affected and needs the workarounds + * to be applied + */ + + /* gpio for resetting phy */ + int reset_gpio_port[OMAP3_HS_USB_PORTS]; + + /* phy reset workaround */ + int phy_reset; + + /* desired phy_mode: TLL, PHY */ + enum ehci_hcd_omap_mode port_mode[OMAP3_HS_USB_PORTS]; + + void __iomem *uhh_base; + void __iomem *tll_base; + void __iomem *ehci_base; +}; + +/*-------------------------------------------------------------------------*/ + +static void omap_usb_utmi_init(struct ehci_hcd_omap *omap, u8 tll_channel_mask) +{ + unsigned reg; + int i; + + /* Program the 3 TLL channels upfront */ + for (i = 0; i < OMAP_TLL_CHANNEL_COUNT; i++) { + reg = ehci_omap_readl(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i)); + + /* Disable AutoIdle, BitStuffing and use SDR Mode */ + reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE + | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF + | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE); + ehci_omap_writel(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i), reg); + } + + /* Program Common TLL register */ + reg = ehci_omap_readl(omap->tll_base, OMAP_TLL_SHARED_CONF); + reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON + | OMAP_TLL_SHARED_CONF_USB_DIVRATION + | OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN); + reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN; + + ehci_omap_writel(omap->tll_base, OMAP_TLL_SHARED_CONF, reg); + + /* Enable channels now */ + for (i = 0; i < OMAP_TLL_CHANNEL_COUNT; i++) { + reg = ehci_omap_readl(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i)); + + /* Enable only the reg that is needed */ + if (!(tll_channel_mask & 1<<i)) + continue; + + reg |= OMAP_TLL_CHANNEL_CONF_CHANEN; + ehci_omap_writel(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i), reg); + + ehci_omap_writeb(omap->tll_base, + OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe); + dev_dbg(omap->dev, "ULPI_SCRATCH_REG[ch=%d]= 0x%02x\n", + i+1, ehci_omap_readb(omap->tll_base, + OMAP_TLL_ULPI_SCRATCH_REGISTER(i))); + } +} + +/*-------------------------------------------------------------------------*/ + +/* omap_start_ehc + * - Start the TI USBHOST controller + */ +static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(1000); + u8 tll_ch_mask = 0; + unsigned reg = 0; + int ret = 0; + + dev_dbg(omap->dev, "starting TI EHCI USB Controller\n"); + + /* Enable Clocks for USBHOST */ + omap->usbhost_ick = clk_get(omap->dev, "usbhost_ick"); + if (IS_ERR(omap->usbhost_ick)) { + ret = PTR_ERR(omap->usbhost_ick); + goto err_host_ick; + } + clk_enable(omap->usbhost_ick); + + omap->usbhost2_120m_fck = clk_get(omap->dev, "usbhost_120m_fck"); + if (IS_ERR(omap->usbhost2_120m_fck)) { + ret = PTR_ERR(omap->usbhost2_120m_fck); + goto err_host_120m_fck; + } + clk_enable(omap->usbhost2_120m_fck); + + omap->usbhost1_48m_fck = clk_get(omap->dev, "usbhost_48m_fck"); + if (IS_ERR(omap->usbhost1_48m_fck)) { + ret = PTR_ERR(omap->usbhost1_48m_fck); + goto err_host_48m_fck; + } + clk_enable(omap->usbhost1_48m_fck); + + if (omap->phy_reset) { + /* Refer: ISSUE1 */ + if (gpio_is_valid(omap->reset_gpio_port[0])) { + gpio_request(omap->reset_gpio_port[0], + "USB1 PHY reset"); + gpio_direction_output(omap->reset_gpio_port[0], 0); + } + + if (gpio_is_valid(omap->reset_gpio_port[1])) { + gpio_request(omap->reset_gpio_port[1], + "USB2 PHY reset"); + gpio_direction_output(omap->reset_gpio_port[1], 0); + } + + /* Hold the PHY in RESET for enough time till DIR is high */ + udelay(10); + } + + /* Configure TLL for 60Mhz clk for ULPI */ + omap->usbtll_fck = clk_get(omap->dev, "usbtll_fck"); + if (IS_ERR(omap->usbtll_fck)) { + ret = PTR_ERR(omap->usbtll_fck); + goto err_tll_fck; + } + clk_enable(omap->usbtll_fck); + + omap->usbtll_ick = clk_get(omap->dev, "usbtll_ick"); + if (IS_ERR(omap->usbtll_ick)) { + ret = PTR_ERR(omap->usbtll_ick); + goto err_tll_ick; + } + clk_enable(omap->usbtll_ick); + + /* perform TLL soft reset, and wait until reset is complete */ + ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, + OMAP_USBTLL_SYSCONFIG_SOFTRESET); + + /* Wait for TLL reset to complete */ + while (!(ehci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS) + & OMAP_USBTLL_SYSSTATUS_RESETDONE)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) { + dev_dbg(omap->dev, "operation timed out\n"); + ret = -EINVAL; + goto err_sys_status; + } + } + + dev_dbg(omap->dev, "TLL RESET DONE\n"); + + /* (1<<3) = no idle mode only for initial debugging */ + ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, + OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | + OMAP_USBTLL_SYSCONFIG_SIDLEMODE | + OMAP_USBTLL_SYSCONFIG_CACTIVITY); + + + /* Put UHH in NoIdle/NoStandby mode */ + reg = ehci_omap_readl(omap->uhh_base, OMAP_UHH_SYSCONFIG); + reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP + | OMAP_UHH_SYSCONFIG_SIDLEMODE + | OMAP_UHH_SYSCONFIG_CACTIVITY + | OMAP_UHH_SYSCONFIG_MIDLEMODE); + reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE; + + ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg); + + reg = ehci_omap_readl(omap->uhh_base, OMAP_UHH_HOSTCONFIG); + + /* setup ULPI bypass and burst configurations */ + reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN + | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN + | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN); + reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN; + + if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_UNKNOWN) + reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; + if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_UNKNOWN) + reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; + if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_UNKNOWN) + reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; + + /* Bypass the TLL module for PHY mode operation */ + if (omap_rev() <= OMAP3430_REV_ES2_1) { + dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1 \n"); + if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY) || + (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY) || + (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY)) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + } else { + dev_dbg(omap->dev, "OMAP3 ES version > ES2.1\n"); + if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + else if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + + if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; + else if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; + + if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; + else if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL) + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; + + } + ehci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg); + dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg); + + + if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) || + (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) || + (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)) { + + if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) + tll_ch_mask |= OMAP_TLL_CHANNEL_1_EN_MASK; + if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) + tll_ch_mask |= OMAP_TLL_CHANNEL_2_EN_MASK; + if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL) + tll_ch_mask |= OMAP_TLL_CHANNEL_3_EN_MASK; + + /* Enable UTMI mode for required TLL channels */ + omap_usb_utmi_init(omap, tll_ch_mask); + } + + if (omap->phy_reset) { + /* Refer ISSUE1: + * Hold the PHY in RESET for enough time till + * PHY is settled and ready + */ + udelay(10); + + if (gpio_is_valid(omap->reset_gpio_port[0])) + gpio_set_value(omap->reset_gpio_port[0], 1); + + if (gpio_is_valid(omap->reset_gpio_port[1])) + gpio_set_value(omap->reset_gpio_port[1], 1); + } + + return 0; + +err_sys_status: + clk_disable(omap->usbtll_ick); + clk_put(omap->usbtll_ick); + +err_tll_ick: + clk_disable(omap->usbtll_fck); + clk_put(omap->usbtll_fck); + +err_tll_fck: + clk_disable(omap->usbhost1_48m_fck); + clk_put(omap->usbhost1_48m_fck); + + if (omap->phy_reset) { + if (gpio_is_valid(omap->reset_gpio_port[0])) + gpio_free(omap->reset_gpio_port[0]); + + if (gpio_is_valid(omap->reset_gpio_port[1])) + gpio_free(omap->reset_gpio_port[1]); + } + +err_host_48m_fck: + clk_disable(omap->usbhost2_120m_fck); + clk_put(omap->usbhost2_120m_fck); + +err_host_120m_fck: + clk_disable(omap->usbhost_ick); + clk_put(omap->usbhost_ick); + +err_host_ick: + return ret; +} + +static void omap_stop_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(100); + + dev_dbg(omap->dev, "stopping TI EHCI USB Controller\n"); + + /* Reset OMAP modules for insmod/rmmod to work */ + ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, + OMAP_UHH_SYSCONFIG_SOFTRESET); + while (!(ehci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & (1 << 0))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + while (!(ehci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & (1 << 1))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + while (!(ehci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & (1 << 2))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1)); + + while (!(ehci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS) + & (1 << 0))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(omap->dev, "operation timed out\n"); + } + + if (omap->usbtll_fck != NULL) { + clk_disable(omap->usbtll_fck); + clk_put(omap->usbtll_fck); + omap->usbtll_fck = NULL; + } + + if (omap->usbhost_ick != NULL) { + clk_disable(omap->usbhost_ick); + clk_put(omap->usbhost_ick); + omap->usbhost_ick = NULL; + } + + if (omap->usbhost1_48m_fck != NULL) { + clk_disable(omap->usbhost1_48m_fck); + clk_put(omap->usbhost1_48m_fck); + omap->usbhost1_48m_fck = NULL; + } + + if (omap->usbhost2_120m_fck != NULL) { + clk_disable(omap->usbhost2_120m_fck); + clk_put(omap->usbhost2_120m_fck); + omap->usbhost2_120m_fck = NULL; + } + + if (omap->usbtll_ick != NULL) { + clk_disable(omap->usbtll_ick); + clk_put(omap->usbtll_ick); + omap->usbtll_ick = NULL; + } + + if (omap->phy_reset) { + if (gpio_is_valid(omap->reset_gpio_port[0])) + gpio_free(omap->reset_gpio_port[0]); + + if (gpio_is_valid(omap->reset_gpio_port[1])) + gpio_free(omap->reset_gpio_port[1]); + } + + dev_dbg(omap->dev, "Clock to USB host has been disabled\n"); +} + +/*-------------------------------------------------------------------------*/ + +static const struct hc_driver ehci_omap_hc_driver; + +/* configure so an HC device and id are always provided */ +/* always called with process context; sleeping is OK */ + +/** + * ehci_hcd_omap_probe - initialize TI-based HCDs + * + * Allocates basic resources for this USB host controller, and + * then invokes the start() method for the HCD associated with it + * through the hotplug entry's driver_data. + */ +static int ehci_hcd_omap_probe(struct platform_device *pdev) +{ + struct ehci_hcd_omap_platform_data *pdata = pdev->dev.platform_data; + struct ehci_hcd_omap *omap; + struct resource *res; + struct usb_hcd *hcd; + + int irq = platform_get_irq(pdev, 0); + int ret = -ENODEV; + + if (!pdata) { + dev_dbg(&pdev->dev, "missing platform_data\n"); + goto err_pdata; + } + + if (usb_disabled()) + goto err_disabled; + + omap = kzalloc(sizeof(*omap), GFP_KERNEL); + if (!omap) { + ret = -ENOMEM; + goto err_disabled; + } + + hcd = usb_create_hcd(&ehci_omap_hc_driver, &pdev->dev, + dev_name(&pdev->dev)); + if (!hcd) { + dev_dbg(&pdev->dev, "failed to create hcd with err %d\n", ret); + ret = -ENOMEM; + goto err_create_hcd; + } + + platform_set_drvdata(pdev, omap); + omap->dev = &pdev->dev; + omap->phy_reset = pdata->phy_reset; + omap->reset_gpio_port[0] = pdata->reset_gpio_port[0]; + omap->reset_gpio_port[1] = pdata->reset_gpio_port[1]; + omap->reset_gpio_port[2] = pdata->reset_gpio_port[2]; + omap->port_mode[0] = pdata->port_mode[0]; + omap->port_mode[1] = pdata->port_mode[1]; + omap->port_mode[2] = pdata->port_mode[2]; + omap->ehci = hcd_to_ehci(hcd); + omap->ehci->sbrn = 0x20; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + dev_err(&pdev->dev, "EHCI ioremap failed\n"); + ret = -ENOMEM; + goto err_ioremap; + } + + /* we know this is the memory we want, no need to ioremap again */ + omap->ehci->caps = hcd->regs; + omap->ehci_base = hcd->regs; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + omap->uhh_base = ioremap(res->start, resource_size(res)); + if (!omap->uhh_base) { + dev_err(&pdev->dev, "UHH ioremap failed\n"); + ret = -ENOMEM; + goto err_uhh_ioremap; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); + omap->tll_base = ioremap(res->start, resource_size(res)); + if (!omap->tll_base) { + dev_err(&pdev->dev, "TLL ioremap failed\n"); + ret = -ENOMEM; + goto err_tll_ioremap; + } + + ret = omap_start_ehc(omap, hcd); + if (ret) { + dev_dbg(&pdev->dev, "failed to start ehci\n"); + goto err_start; + } + + omap->ehci->regs = hcd->regs + + HC_LENGTH(readl(&omap->ehci->caps->hc_capbase)); + + /* cache this readonly data; minimize chip reads */ + omap->ehci->hcs_params = readl(&omap->ehci->caps->hcs_params); + + /* SET 1 micro-frame Interrupt interval */ + writel(readl(&omap->ehci->regs->command) | (1 << 16), + &omap->ehci->regs->command); + + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); + if (ret) { + dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret); + goto err_add_hcd; + } + + return 0; + +err_add_hcd: + omap_stop_ehc(omap, hcd); + +err_start: + iounmap(omap->tll_base); + +err_tll_ioremap: + iounmap(omap->uhh_base); + +err_uhh_ioremap: + iounmap(hcd->regs); + +err_ioremap: + usb_put_hcd(hcd); + +err_create_hcd: + kfree(omap); +err_disabled: +err_pdata: + return ret; +} + +/* may be called without controller electrically present */ +/* may be called with controller, bus, and devices active */ + +/** + * ehci_hcd_omap_remove - shutdown processing for EHCI HCDs + * @pdev: USB Host Controller being removed + * + * Reverses the effect of usb_ehci_hcd_omap_probe(), first invoking + * the HCD's stop() method. It is always called from a thread + * context, normally "rmmod", "apmd", or something similar. + */ +static int ehci_hcd_omap_remove(struct platform_device *pdev) +{ + struct ehci_hcd_omap *omap = platform_get_drvdata(pdev); + struct usb_hcd *hcd = ehci_to_hcd(omap->ehci); + + usb_remove_hcd(hcd); + omap_stop_ehc(omap, hcd); + iounmap(hcd->regs); + iounmap(omap->tll_base); + iounmap(omap->uhh_base); + usb_put_hcd(hcd); + + return 0; +} + +static void ehci_hcd_omap_shutdown(struct platform_device *pdev) +{ + struct ehci_hcd_omap *omap = platform_get_drvdata(pdev); + struct usb_hcd *hcd = ehci_to_hcd(omap->ehci); + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); +} + +static struct platform_driver ehci_hcd_omap_driver = { + .probe = ehci_hcd_omap_probe, + .remove = ehci_hcd_omap_remove, + .shutdown = ehci_hcd_omap_shutdown, + /*.suspend = ehci_hcd_omap_suspend, */ + /*.resume = ehci_hcd_omap_resume, */ + .driver = { + .name = "ehci-omap", + } +}; + +/*-------------------------------------------------------------------------*/ + +static const struct hc_driver ehci_omap_hc_driver = { + .description = hcd_name, + .product_desc = "OMAP-EHCI Host Controller", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = ehci_init, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, + + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +}; + +MODULE_ALIAS("platform:omap-ehci"); +MODULE_AUTHOR("Texas Instruments, Inc."); +MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>"); + diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 139a2cc3f641..a427d3b00634 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -616,9 +616,11 @@ qh_urb_transaction ( ) { struct ehci_qtd *qtd, *qtd_prev; dma_addr_t buf; - int len, maxpacket; + int len, this_sg_len, maxpacket; int is_input; u32 token; + int i; + struct scatterlist *sg; /* * URBs map to sequences of QTDs: one logical transaction @@ -659,7 +661,20 @@ qh_urb_transaction ( /* * data transfer stage: buffer setup */ - buf = urb->transfer_dma; + i = urb->num_sgs; + if (len > 0 && i > 0) { + sg = urb->sg->sg; + buf = sg_dma_address(sg); + + /* urb->transfer_buffer_length may be smaller than the + * size of the scatterlist (or vice versa) + */ + this_sg_len = min_t(int, sg_dma_len(sg), len); + } else { + sg = NULL; + buf = urb->transfer_dma; + this_sg_len = len; + } if (is_input) token |= (1 /* "in" */ << 8); @@ -675,7 +690,9 @@ qh_urb_transaction ( for (;;) { int this_qtd_len; - this_qtd_len = qtd_fill(ehci, qtd, buf, len, token, maxpacket); + this_qtd_len = qtd_fill(ehci, qtd, buf, this_sg_len, token, + maxpacket); + this_sg_len -= this_qtd_len; len -= this_qtd_len; buf += this_qtd_len; @@ -691,8 +708,13 @@ qh_urb_transaction ( if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0) token ^= QTD_TOGGLE; - if (likely (len <= 0)) - break; + if (likely(this_sg_len <= 0)) { + if (--i <= 0 || len <= 0) + break; + sg = sg_next(sg); + buf = sg_dma_address(sg); + this_sg_len = min_t(int, sg_dma_len(sg), len); + } qtd_prev = qtd; qtd = ehci_qtd_alloc (ehci, flags); diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index a5535b5e3fe2..1e391e624c8a 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1385,7 +1385,7 @@ sitd_slot_ok ( * given EHCI_TUNE_FLS and the slop). Or, write a smarter scheduler! */ -#define SCHEDULE_SLOP 10 /* frames */ +#define SCHEDULE_SLOP 80 /* microframes */ static int iso_stream_schedule ( @@ -1394,12 +1394,13 @@ iso_stream_schedule ( struct ehci_iso_stream *stream ) { - u32 now, start, max, period; + u32 now, next, start, period; int status; unsigned mod = ehci->periodic_size << 3; struct ehci_iso_sched *sched = urb->hcpriv; + struct pci_dev *pdev; - if (sched->span > (mod - 8 * SCHEDULE_SLOP)) { + if (sched->span > (mod - SCHEDULE_SLOP)) { ehci_dbg (ehci, "iso request %p too long\n", urb); status = -EFBIG; goto fail; @@ -1418,26 +1419,35 @@ iso_stream_schedule ( now = ehci_readl(ehci, &ehci->regs->frame_index) % mod; - /* when's the last uframe this urb could start? */ - max = now + mod; - /* Typical case: reuse current schedule, stream is still active. * Hopefully there are no gaps from the host falling behind * (irq delays etc), but if there are we'll take the next * slot in the schedule, implicitly assuming URB_ISO_ASAP. */ if (likely (!list_empty (&stream->td_list))) { + pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); start = stream->next_uframe; - if (start < now) - start += mod; + + /* For high speed devices, allow scheduling within the + * isochronous scheduling threshold. For full speed devices, + * don't. (Work around for Intel ICH9 bug.) + */ + if (!stream->highspeed && + pdev->vendor == PCI_VENDOR_ID_INTEL) + next = now + ehci->i_thresh; + else + next = now; /* Fell behind (by up to twice the slop amount)? */ - if (start >= max - 2 * 8 * SCHEDULE_SLOP) + if (((start - next) & (mod - 1)) >= + mod - 2 * SCHEDULE_SLOP) start += period * DIV_ROUND_UP( - max - start, period) - mod; + (next - start) & (mod - 1), + period); /* Tried to schedule too far into the future? */ - if (unlikely((start + sched->span) >= max)) { + if (unlikely(((start - now) & (mod - 1)) + sched->span + >= mod - 2 * SCHEDULE_SLOP)) { status = -EFBIG; goto fail; } @@ -1451,7 +1461,7 @@ iso_stream_schedule ( * can also help high bandwidth if the dma and irq loads don't * jump until after the queue is primed. */ - start = SCHEDULE_SLOP * 8 + (now & ~0x07); + start = SCHEDULE_SLOP + (now & ~0x07); start %= mod; stream->next_uframe = start; @@ -1482,7 +1492,7 @@ iso_stream_schedule ( /* no room in the schedule */ ehci_dbg (ehci, "iso %ssched full %p (now %d max %d)\n", list_empty (&stream->td_list) ? "" : "re", - urb, now, max); + urb, now, now + mod); status = -ENOSPC; fail: diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c new file mode 100644 index 000000000000..a5861531ad3e --- /dev/null +++ b/drivers/usb/host/ehci-xilinx-of.c @@ -0,0 +1,300 @@ +/* + * EHCI HCD (Host Controller Driver) for USB. + * + * Bus Glue for Xilinx EHCI core on the of_platform bus + * + * Copyright (c) 2009 Xilinx, Inc. + * + * Based on "ehci-ppc-of.c" by Valentine Barshak <vbarshak@ru.mvista.com> + * and "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de> + * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/signal.h> + +#include <linux/of.h> +#include <linux/of_platform.h> + +/** + * ehci_xilinx_of_setup - Initialize the device for ehci_reset() + * @hcd: Pointer to the usb_hcd device to which the host controller bound + * + * called during probe() after chip reset completes. + */ +static int ehci_xilinx_of_setup(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + + retval = ehci_halt(ehci); + if (retval) + return retval; + + retval = ehci_init(hcd); + if (retval) + return retval; + + ehci->sbrn = 0x20; + + return ehci_reset(ehci); +} + +/** + * ehci_xilinx_port_handed_over - hand the port out if failed to enable it + * @hcd: Pointer to the usb_hcd device to which the host controller bound + * @portnum:Port number to which the device is attached. + * + * This function is used as a place to tell the user that the Xilinx USB host + * controller does support LS devices. And in an HS only configuration, it + * does not support FS devices either. It is hoped that this can help a + * confused user. + * + * There are cases when the host controller fails to enable the port due to, + * for example, insufficient power that can be supplied to the device from + * the USB bus. In those cases, the messages printed here are not helpful. + */ +static int ehci_xilinx_port_handed_over(struct usb_hcd *hcd, int portnum) +{ + dev_warn(hcd->self.controller, "port %d cannot be enabled\n", portnum); + if (hcd->has_tt) { + dev_warn(hcd->self.controller, + "Maybe you have connected a low speed device?\n"); + + dev_warn(hcd->self.controller, + "We do not support low speed devices\n"); + } else { + dev_warn(hcd->self.controller, + "Maybe your device is not a high speed device?\n"); + dev_warn(hcd->self.controller, + "The USB host controller does not support full speed " + "nor low speed devices\n"); + dev_warn(hcd->self.controller, + "You can reconfigure the host controller to have " + "full speed support\n"); + } + + return 0; +} + + +static const struct hc_driver ehci_xilinx_of_hc_driver = { + .description = hcd_name, + .product_desc = "OF EHCI", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = ehci_xilinx_of_setup, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, +#endif + .relinquish_port = NULL, + .port_handed_over = ehci_xilinx_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +}; + +/** + * ehci_hcd_xilinx_of_probe - Probe method for the USB host controller + * @op: pointer to the of_device to which the host controller bound + * @match: pointer to of_device_id structure, not used + * + * This function requests resources and sets up appropriate properties for the + * host controller. Because the Xilinx USB host controller can be configured + * as HS only or HS/FS only, it checks the configuration in the device tree + * entry, and sets an appropriate value for hcd->has_tt. + */ +static int __devinit +ehci_hcd_xilinx_of_probe(struct of_device *op, const struct of_device_id *match) +{ + struct device_node *dn = op->node; + struct usb_hcd *hcd; + struct ehci_hcd *ehci; + struct resource res; + int irq; + int rv; + int *value; + + if (usb_disabled()) + return -ENODEV; + + dev_dbg(&op->dev, "initializing XILINX-OF USB Controller\n"); + + rv = of_address_to_resource(dn, 0, &res); + if (rv) + return rv; + + hcd = usb_create_hcd(&ehci_xilinx_of_hc_driver, &op->dev, + "XILINX-OF USB"); + if (!hcd) + return -ENOMEM; + + hcd->rsrc_start = res.start; + hcd->rsrc_len = res.end - res.start + 1; + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + printk(KERN_ERR __FILE__ ": request_mem_region failed\n"); + rv = -EBUSY; + goto err_rmr; + } + + irq = irq_of_parse_and_map(dn, 0); + if (irq == NO_IRQ) { + printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n"); + rv = -EBUSY; + goto err_irq; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + printk(KERN_ERR __FILE__ ": ioremap failed\n"); + rv = -ENOMEM; + goto err_ioremap; + } + + ehci = hcd_to_ehci(hcd); + + /* This core always has big-endian register interface and uses + * big-endian memory descriptors. + */ + ehci->big_endian_mmio = 1; + ehci->big_endian_desc = 1; + + /* Check whether the FS support option is selected in the hardware. + */ + value = (int *)of_get_property(dn, "xlnx,support-usb-fs", NULL); + if (value && (*value == 1)) { + ehci_dbg(ehci, "USB host controller supports FS devices\n"); + hcd->has_tt = 1; + } else { + ehci_dbg(ehci, + "USB host controller is HS only\n"); + hcd->has_tt = 0; + } + + /* Debug registers are at the first 0x100 region + */ + ehci->caps = hcd->regs + 0x100; + ehci->regs = hcd->regs + 0x100 + + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + + /* cache this readonly data; minimize chip reads */ + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + + rv = usb_add_hcd(hcd, irq, 0); + if (rv == 0) + return 0; + + iounmap(hcd->regs); + +err_ioremap: +err_irq: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +err_rmr: + usb_put_hcd(hcd); + + return rv; +} + +/** + * ehci_hcd_xilinx_of_remove - shutdown hcd and release resources + * @op: pointer to of_device structure that is to be removed + * + * Remove the hcd structure, and release resources that has been requested + * during probe. + */ +static int ehci_hcd_xilinx_of_remove(struct of_device *op) +{ + struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + dev_set_drvdata(&op->dev, NULL); + + dev_dbg(&op->dev, "stopping XILINX-OF USB Controller\n"); + + usb_remove_hcd(hcd); + + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + + usb_put_hcd(hcd); + + return 0; +} + +/** + * ehci_hcd_xilinx_of_shutdown - shutdown the hcd + * @op: pointer to of_device structure that is to be removed + * + * Properly shutdown the hcd, call driver's shutdown routine. + */ +static int ehci_hcd_xilinx_of_shutdown(struct of_device *op) +{ + struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); + + return 0; +} + + +static struct of_device_id ehci_hcd_xilinx_of_match[] = { + {.compatible = "xlnx,xps-usb-host-1.00.a",}, + {}, +}; +MODULE_DEVICE_TABLE(of, ehci_hcd_xilinx_of_match); + +static struct of_platform_driver ehci_hcd_xilinx_of_driver = { + .name = "xilinx-of-ehci", + .match_table = ehci_hcd_xilinx_of_match, + .probe = ehci_hcd_xilinx_of_probe, + .remove = ehci_hcd_xilinx_of_remove, + .shutdown = ehci_hcd_xilinx_of_shutdown, + .driver = { + .name = "xilinx-of-ehci", + .owner = THIS_MODULE, + }, +}; diff --git a/drivers/usb/host/isp1362.h b/drivers/usb/host/isp1362.h index 1a253ebf7e50..5151516ea1de 100644 --- a/drivers/usb/host/isp1362.h +++ b/drivers/usb/host/isp1362.h @@ -534,8 +534,8 @@ struct isp1362_hcd { /* periodic schedule: isochronous */ struct list_head isoc; - int istl_flip:1; - int irq_active:1; + unsigned int istl_flip:1; + unsigned int irq_active:1; /* Schedules for the current frame */ struct isp1362_ep_queue atl_queue; diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 7ccffcbe7b6f..68b83ab70719 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -35,7 +35,7 @@ extern int usb_disabled(void); static void at91_start_clock(void) { - if (cpu_is_at91sam9261()) + if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) clk_enable(hclk); clk_enable(iclk); clk_enable(fclk); @@ -46,7 +46,7 @@ static void at91_stop_clock(void) { clk_disable(fclk); clk_disable(iclk); - if (cpu_is_at91sam9261()) + if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) clk_disable(hclk); clocked = 0; } @@ -142,7 +142,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, iclk = clk_get(&pdev->dev, "ohci_clk"); fclk = clk_get(&pdev->dev, "uhpck"); - if (cpu_is_at91sam9261()) + if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) hclk = clk_get(&pdev->dev, "hck0"); at91_start_hc(pdev); @@ -155,7 +155,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, /* Error handling */ at91_stop_hc(pdev); - if (cpu_is_at91sam9261()) + if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) clk_put(hclk); clk_put(fclk); clk_put(iclk); @@ -192,7 +192,7 @@ static void usb_hcd_at91_remove(struct usb_hcd *hcd, release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); - if (cpu_is_at91sam9261()) + if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) clk_put(hclk); clk_put(fclk); clk_put(iclk); diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c index 100bf3d8437c..2769326da42e 100644 --- a/drivers/usb/host/ohci-pnx4008.c +++ b/drivers/usb/host/ohci-pnx4008.c @@ -98,8 +98,8 @@ #define ISP1301_I2C_INTERRUPT_RISING 0xE #define ISP1301_I2C_REG_CLEAR_ADDR 1 -struct i2c_driver isp1301_driver; -struct i2c_client *isp1301_i2c_client; +static struct i2c_driver isp1301_driver; +static struct i2c_client *isp1301_i2c_client; extern int usb_disabled(void); extern int ocpi_enable(void); @@ -120,12 +120,12 @@ static int isp1301_remove(struct i2c_client *client) return 0; } -const struct i2c_device_id isp1301_id[] = { +static const struct i2c_device_id isp1301_id[] = { { "isp1301_pnx", 0 }, { } }; -struct i2c_driver isp1301_driver = { +static struct i2c_driver isp1301_driver = { .driver = { .name = "isp1301_pnx", }, diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index e33d36256350..41dbc70ae752 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -822,8 +822,6 @@ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) return; list_for_each_entry_safe(td, next, list, queue) { - if (!td) - continue; if (td->address != address) continue; @@ -2025,8 +2023,6 @@ static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, struct list_head *list = &r8a66597->child_device; list_for_each_entry(dev, list, device_list) { - if (!dev) - continue; if (dev->usb_address != addr) continue; diff --git a/drivers/usb/host/whci/debug.c b/drivers/usb/host/whci/debug.c index 2273c815941f..8c1c610c9513 100644 --- a/drivers/usb/host/whci/debug.c +++ b/drivers/usb/host/whci/debug.c @@ -31,17 +31,29 @@ struct whc_dbg { void qset_print(struct seq_file *s, struct whc_qset *qset) { + static const char *qh_type[] = { + "ctrl", "isoc", "bulk", "intr", "rsvd", "rsvd", "rsvd", "lpintr", }; struct whc_std *std; struct urb *urb = NULL; int i; - seq_printf(s, "qset %08x\n", (u32)qset->qset_dma); + seq_printf(s, "qset %08x", (u32)qset->qset_dma); + if (&qset->list_node == qset->whc->async_list.prev) { + seq_printf(s, " (dummy)\n"); + } else { + seq_printf(s, " ep%d%s-%s maxpkt: %d\n", + qset->qh.info1 & 0x0f, + (qset->qh.info1 >> 4) & 0x1 ? "in" : "out", + qh_type[(qset->qh.info1 >> 5) & 0x7], + (qset->qh.info1 >> 16) & 0xffff); + } seq_printf(s, " -> %08x\n", (u32)qset->qh.link); seq_printf(s, " info: %08x %08x %08x\n", - qset->qh.info1, qset->qh.info2, qset->qh.info3); - seq_printf(s, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count); + qset->qh.info1, qset->qh.info2, qset->qh.info3); + seq_printf(s, " sts: %04x errs: %d curwin: %08x\n", + qset->qh.status, qset->qh.err_count, qset->qh.cur_window); seq_printf(s, " TD: sts: %08x opts: %08x\n", - qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options); + qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options); for (i = 0; i < WHCI_QSET_TD_MAX; i++) { seq_printf(s, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n", diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c index 687b622a1612..e0d3401285c8 100644 --- a/drivers/usb/host/whci/hcd.c +++ b/drivers/usb/host/whci/hcd.c @@ -250,6 +250,7 @@ static int whc_probe(struct umc_dev *umc) } usb_hcd->wireless = 1; + usb_hcd->self.sg_tablesize = 2048; /* somewhat arbitrary */ wusbhc = usb_hcd_to_wusbhc(usb_hcd); whc = wusbhc_to_whc(wusbhc); diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c index 1b9dc1571570..7d4204db0f61 100644 --- a/drivers/usb/host/whci/qset.c +++ b/drivers/usb/host/whci/qset.c @@ -49,16 +49,19 @@ struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags) * state * @urb: an urb for a transfer to this endpoint */ -static void qset_fill_qh(struct whc_qset *qset, struct urb *urb) +static void qset_fill_qh(struct whc *whc, struct whc_qset *qset, struct urb *urb) { struct usb_device *usb_dev = urb->dev; + struct wusb_dev *wusb_dev = usb_dev->wusb_dev; struct usb_wireless_ep_comp_descriptor *epcd; bool is_out; + uint8_t phy_rate; is_out = usb_pipeout(urb->pipe); - epcd = (struct usb_wireless_ep_comp_descriptor *)qset->ep->extra; + qset->max_packet = le16_to_cpu(urb->ep->desc.wMaxPacketSize); + epcd = (struct usb_wireless_ep_comp_descriptor *)qset->ep->extra; if (epcd) { qset->max_seq = epcd->bMaxSequence; qset->max_burst = epcd->bMaxBurst; @@ -67,12 +70,28 @@ static void qset_fill_qh(struct whc_qset *qset, struct urb *urb) qset->max_burst = 1; } + /* + * Initial PHY rate is 53.3 Mbit/s for control endpoints or + * the maximum supported by the device for other endpoints + * (unless limited by the user). + */ + if (usb_pipecontrol(urb->pipe)) + phy_rate = UWB_PHY_RATE_53; + else { + uint16_t phy_rates; + + phy_rates = le16_to_cpu(wusb_dev->wusb_cap_descr->wPHYRates); + phy_rate = fls(phy_rates) - 1; + if (phy_rate > whc->wusbhc.phy_rate) + phy_rate = whc->wusbhc.phy_rate; + } + qset->qh.info1 = cpu_to_le32( QH_INFO1_EP(usb_pipeendpoint(urb->pipe)) | (is_out ? QH_INFO1_DIR_OUT : QH_INFO1_DIR_IN) | usb_pipe_to_qh_type(urb->pipe) | QH_INFO1_DEV_INFO_IDX(wusb_port_no_to_idx(usb_dev->portnum)) - | QH_INFO1_MAX_PKT_LEN(usb_maxpacket(urb->dev, urb->pipe, is_out)) + | QH_INFO1_MAX_PKT_LEN(qset->max_packet) ); qset->qh.info2 = cpu_to_le32( QH_INFO2_BURST(qset->max_burst) @@ -86,7 +105,7 @@ static void qset_fill_qh(struct whc_qset *qset, struct urb *urb) * strength and can presumably guess the Tx power required * from that? */ qset->qh.info3 = cpu_to_le32( - QH_INFO3_TX_RATE_53_3 + QH_INFO3_TX_RATE(phy_rate) | QH_INFO3_TX_PWR(0) /* 0 == max power */ ); @@ -148,7 +167,7 @@ struct whc_qset *get_qset(struct whc *whc, struct urb *urb, qset->ep = urb->ep; urb->ep->hcpriv = qset; - qset_fill_qh(qset, urb); + qset_fill_qh(whc, qset, urb); } return qset; } @@ -241,6 +260,36 @@ static void qset_remove_qtd(struct whc *whc, struct whc_qset *qset) qset->ntds--; } +static void qset_copy_bounce_to_sg(struct whc *whc, struct whc_std *std) +{ + struct scatterlist *sg; + void *bounce; + size_t remaining, offset; + + bounce = std->bounce_buf; + remaining = std->len; + + sg = std->bounce_sg; + offset = std->bounce_offset; + + while (remaining) { + size_t len; + + len = min(sg->length - offset, remaining); + memcpy(sg_virt(sg) + offset, bounce, len); + + bounce += len; + remaining -= len; + + offset += len; + if (offset >= sg->length) { + sg = sg_next(sg); + offset = 0; + } + } + +} + /** * qset_free_std - remove an sTD and free it. * @whc: the WHCI host controller @@ -249,13 +298,29 @@ static void qset_remove_qtd(struct whc *whc, struct whc_qset *qset) void qset_free_std(struct whc *whc, struct whc_std *std) { list_del(&std->list_node); - if (std->num_pointers) { - dma_unmap_single(whc->wusbhc.dev, std->dma_addr, - std->num_pointers * sizeof(struct whc_page_list_entry), - DMA_TO_DEVICE); + if (std->bounce_buf) { + bool is_out = usb_pipeout(std->urb->pipe); + dma_addr_t dma_addr; + + if (std->num_pointers) + dma_addr = le64_to_cpu(std->pl_virt[0].buf_ptr); + else + dma_addr = std->dma_addr; + + dma_unmap_single(whc->wusbhc.dev, dma_addr, + std->len, is_out ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + if (!is_out) + qset_copy_bounce_to_sg(whc, std); + kfree(std->bounce_buf); + } + if (std->pl_virt) { + if (std->dma_addr) + dma_unmap_single(whc->wusbhc.dev, std->dma_addr, + std->num_pointers * sizeof(struct whc_page_list_entry), + DMA_TO_DEVICE); kfree(std->pl_virt); + std->pl_virt = NULL; } - kfree(std); } @@ -293,12 +358,17 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f { dma_addr_t dma_addr = std->dma_addr; dma_addr_t sp, ep; - size_t std_len = std->len; size_t pl_len; int p; - sp = ALIGN(dma_addr, WHCI_PAGE_SIZE); - ep = dma_addr + std_len; + /* Short buffers don't need a page list. */ + if (std->len <= WHCI_PAGE_SIZE) { + std->num_pointers = 0; + return 0; + } + + sp = dma_addr & ~(WHCI_PAGE_SIZE-1); + ep = dma_addr + std->len; std->num_pointers = DIV_ROUND_UP(ep - sp, WHCI_PAGE_SIZE); pl_len = std->num_pointers * sizeof(struct whc_page_list_entry); @@ -309,7 +379,7 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f for (p = 0; p < std->num_pointers; p++) { std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr); - dma_addr = ALIGN(dma_addr + WHCI_PAGE_SIZE, WHCI_PAGE_SIZE); + dma_addr = (dma_addr + WHCI_PAGE_SIZE) & ~(WHCI_PAGE_SIZE-1); } return 0; @@ -339,6 +409,218 @@ static void urb_dequeue_work(struct work_struct *work) spin_unlock_irqrestore(&whc->lock, flags); } +static struct whc_std *qset_new_std(struct whc *whc, struct whc_qset *qset, + struct urb *urb, gfp_t mem_flags) +{ + struct whc_std *std; + + std = kzalloc(sizeof(struct whc_std), mem_flags); + if (std == NULL) + return NULL; + + std->urb = urb; + std->qtd = NULL; + + INIT_LIST_HEAD(&std->list_node); + list_add_tail(&std->list_node, &qset->stds); + + return std; +} + +static int qset_add_urb_sg(struct whc *whc, struct whc_qset *qset, struct urb *urb, + gfp_t mem_flags) +{ + size_t remaining; + struct scatterlist *sg; + int i; + int ntds = 0; + struct whc_std *std = NULL; + struct whc_page_list_entry *entry; + dma_addr_t prev_end = 0; + size_t pl_len; + int p = 0; + + remaining = urb->transfer_buffer_length; + + for_each_sg(urb->sg->sg, sg, urb->num_sgs, i) { + dma_addr_t dma_addr; + size_t dma_remaining; + dma_addr_t sp, ep; + int num_pointers; + + if (remaining == 0) { + break; + } + + dma_addr = sg_dma_address(sg); + dma_remaining = min_t(size_t, sg_dma_len(sg), remaining); + + while (dma_remaining) { + size_t dma_len; + + /* + * We can use the previous std (if it exists) provided that: + * - the previous one ended on a page boundary. + * - the current one begins on a page boundary. + * - the previous one isn't full. + * + * If a new std is needed but the previous one + * was not a whole number of packets then this + * sg list cannot be mapped onto multiple + * qTDs. Return an error and let the caller + * sort it out. + */ + if (!std + || (prev_end & (WHCI_PAGE_SIZE-1)) + || (dma_addr & (WHCI_PAGE_SIZE-1)) + || std->len + WHCI_PAGE_SIZE > QTD_MAX_XFER_SIZE) { + if (std->len % qset->max_packet != 0) + return -EINVAL; + std = qset_new_std(whc, qset, urb, mem_flags); + if (std == NULL) { + return -ENOMEM; + } + ntds++; + p = 0; + } + + dma_len = dma_remaining; + + /* + * If the remainder of this element doesn't + * fit in a single qTD, limit the qTD to a + * whole number of packets. This allows the + * remainder to go into the next qTD. + */ + if (std->len + dma_len > QTD_MAX_XFER_SIZE) { + dma_len = (QTD_MAX_XFER_SIZE / qset->max_packet) + * qset->max_packet - std->len; + } + + std->len += dma_len; + std->ntds_remaining = -1; /* filled in later */ + + sp = dma_addr & ~(WHCI_PAGE_SIZE-1); + ep = dma_addr + dma_len; + num_pointers = DIV_ROUND_UP(ep - sp, WHCI_PAGE_SIZE); + std->num_pointers += num_pointers; + + pl_len = std->num_pointers * sizeof(struct whc_page_list_entry); + + std->pl_virt = krealloc(std->pl_virt, pl_len, mem_flags); + if (std->pl_virt == NULL) { + return -ENOMEM; + } + + for (;p < std->num_pointers; p++, entry++) { + std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr); + dma_addr = (dma_addr + WHCI_PAGE_SIZE) & ~(WHCI_PAGE_SIZE-1); + } + + prev_end = dma_addr = ep; + dma_remaining -= dma_len; + remaining -= dma_len; + } + } + + /* Now the number of stds is know, go back and fill in + std->ntds_remaining. */ + list_for_each_entry(std, &qset->stds, list_node) { + if (std->ntds_remaining == -1) { + pl_len = std->num_pointers * sizeof(struct whc_page_list_entry); + std->ntds_remaining = ntds--; + std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, + pl_len, DMA_TO_DEVICE); + } + } + return 0; +} + +/** + * qset_add_urb_sg_linearize - add an urb with sg list, copying the data + * + * If the URB contains an sg list whose elements cannot be directly + * mapped to qTDs then the data must be transferred via bounce + * buffers. + */ +static int qset_add_urb_sg_linearize(struct whc *whc, struct whc_qset *qset, + struct urb *urb, gfp_t mem_flags) +{ + bool is_out = usb_pipeout(urb->pipe); + size_t max_std_len; + size_t remaining; + int ntds = 0; + struct whc_std *std = NULL; + void *bounce = NULL; + struct scatterlist *sg; + int i; + + /* limit maximum bounce buffer to 16 * 3.5 KiB ~= 28 k */ + max_std_len = qset->max_burst * qset->max_packet; + + remaining = urb->transfer_buffer_length; + + for_each_sg(urb->sg->sg, sg, urb->sg->nents, i) { + size_t len; + size_t sg_remaining; + void *orig; + + if (remaining == 0) { + break; + } + + sg_remaining = min_t(size_t, remaining, sg->length); + orig = sg_virt(sg); + + while (sg_remaining) { + if (!std || std->len == max_std_len) { + std = qset_new_std(whc, qset, urb, mem_flags); + if (std == NULL) + return -ENOMEM; + std->bounce_buf = kmalloc(max_std_len, mem_flags); + if (std->bounce_buf == NULL) + return -ENOMEM; + std->bounce_sg = sg; + std->bounce_offset = orig - sg_virt(sg); + bounce = std->bounce_buf; + ntds++; + } + + len = min(sg_remaining, max_std_len - std->len); + + if (is_out) + memcpy(bounce, orig, len); + + std->len += len; + std->ntds_remaining = -1; /* filled in later */ + + bounce += len; + orig += len; + sg_remaining -= len; + remaining -= len; + } + } + + /* + * For each of the new sTDs, map the bounce buffers, create + * page lists (if necessary), and fill in std->ntds_remaining. + */ + list_for_each_entry(std, &qset->stds, list_node) { + if (std->ntds_remaining != -1) + continue; + + std->dma_addr = dma_map_single(&whc->umc->dev, std->bounce_buf, std->len, + is_out ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + if (qset_fill_page_list(whc, std, mem_flags) < 0) + return -ENOMEM; + + std->ntds_remaining = ntds--; + } + + return 0; +} + /** * qset_add_urb - add an urb to the qset's queue. * @@ -353,10 +635,7 @@ int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb, int remaining = urb->transfer_buffer_length; u64 transfer_dma = urb->transfer_dma; int ntds_remaining; - - ntds_remaining = DIV_ROUND_UP(remaining, QTD_MAX_XFER_SIZE); - if (ntds_remaining == 0) - ntds_remaining = 1; + int ret; wurb = kzalloc(sizeof(struct whc_urb), mem_flags); if (wurb == NULL) @@ -366,32 +645,39 @@ int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb, wurb->urb = urb; INIT_WORK(&wurb->dequeue_work, urb_dequeue_work); + if (urb->sg) { + ret = qset_add_urb_sg(whc, qset, urb, mem_flags); + if (ret == -EINVAL) { + qset_free_stds(qset, urb); + ret = qset_add_urb_sg_linearize(whc, qset, urb, mem_flags); + } + if (ret < 0) + goto err_no_mem; + return 0; + } + + ntds_remaining = DIV_ROUND_UP(remaining, QTD_MAX_XFER_SIZE); + if (ntds_remaining == 0) + ntds_remaining = 1; + while (ntds_remaining) { struct whc_std *std; size_t std_len; - std = kmalloc(sizeof(struct whc_std), mem_flags); - if (std == NULL) - goto err_no_mem; - std_len = remaining; if (std_len > QTD_MAX_XFER_SIZE) std_len = QTD_MAX_XFER_SIZE; - std->urb = urb; + std = qset_new_std(whc, qset, urb, mem_flags); + if (std == NULL) + goto err_no_mem; + std->dma_addr = transfer_dma; std->len = std_len; std->ntds_remaining = ntds_remaining; - std->qtd = NULL; - INIT_LIST_HEAD(&std->list_node); - list_add_tail(&std->list_node, &qset->stds); - - if (std_len > WHCI_PAGE_SIZE) { - if (qset_fill_page_list(whc, std, mem_flags) < 0) - goto err_no_mem; - } else - std->num_pointers = 0; + if (qset_fill_page_list(whc, std, mem_flags) < 0) + goto err_no_mem; ntds_remaining--; remaining -= std_len; diff --git a/drivers/usb/host/whci/whcd.h b/drivers/usb/host/whci/whcd.h index 24e94d983c5e..c80c7d93bc4a 100644 --- a/drivers/usb/host/whci/whcd.h +++ b/drivers/usb/host/whci/whcd.h @@ -84,6 +84,11 @@ struct whc { * @len: the length of data in the associated TD. * @ntds_remaining: number of TDs (starting from this one) in this transfer. * + * @bounce_buf: a bounce buffer if the std was from an urb with a sg + * list that could not be mapped to qTDs directly. + * @bounce_sg: the first scatterlist element bounce_buf is for. + * @bounce_offset: the offset into bounce_sg for the start of bounce_buf. + * * Queued URBs may require more TDs than are available in a qset so we * use a list of these "software TDs" (sTDs) to hold per-TD data. */ @@ -97,6 +102,10 @@ struct whc_std { int num_pointers; dma_addr_t dma_addr; struct whc_page_list_entry *pl_virt; + + void *bounce_buf; + struct scatterlist *bounce_sg; + unsigned bounce_offset; }; /** diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h index e8d0001605be..4d4cbc0730bf 100644 --- a/drivers/usb/host/whci/whci-hc.h +++ b/drivers/usb/host/whci/whci-hc.h @@ -172,14 +172,7 @@ struct whc_qhead { #define QH_INFO3_MAX_DELAY(d) ((d) << 0) /* maximum stream delay in 125 us units (isoc only) */ #define QH_INFO3_INTERVAL(i) ((i) << 16) /* segment interval in 125 us units (isoc only) */ -#define QH_INFO3_TX_RATE_53_3 (0 << 24) -#define QH_INFO3_TX_RATE_80 (1 << 24) -#define QH_INFO3_TX_RATE_106_7 (2 << 24) -#define QH_INFO3_TX_RATE_160 (3 << 24) -#define QH_INFO3_TX_RATE_200 (4 << 24) -#define QH_INFO3_TX_RATE_320 (5 << 24) -#define QH_INFO3_TX_RATE_400 (6 << 24) -#define QH_INFO3_TX_RATE_480 (7 << 24) +#define QH_INFO3_TX_RATE(r) ((r) << 24) /* PHY rate (see [ECMA-368] section 10.3.1.1) */ #define QH_INFO3_TX_PWR(p) ((p) << 29) /* transmit power (see [WUSB] section 5.2.1.2) */ #define QH_STATUS_FLOW_CTRL (1 << 15) @@ -267,8 +260,9 @@ struct whc_qset { unsigned reset:1; struct urb *pause_after_urb; struct completion remove_complete; - int max_burst; - int max_seq; + uint16_t max_packet; + uint8_t max_burst; + uint8_t max_seq; }; static inline void whc_qset_set_link_ptr(u64 *ptr, u64 target) diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c index 932f99938481..5e92c72df642 100644 --- a/drivers/usb/host/xhci-hcd.c +++ b/drivers/usb/host/xhci-hcd.c @@ -67,22 +67,14 @@ static int handshake(struct xhci_hcd *xhci, void __iomem *ptr, } /* - * Force HC into halt state. - * - * Disable any IRQs and clear the run/stop bit. - * HC will complete any current and actively pipelined transactions, and - * should halt within 16 microframes of the run/stop bit being cleared. - * Read HC Halted bit in the status register to see when the HC is finished. - * XXX: shouldn't we set HC_STATE_HALT here somewhere? + * Disable interrupts and begin the xHCI halting process. */ -int xhci_halt(struct xhci_hcd *xhci) +void xhci_quiesce(struct xhci_hcd *xhci) { u32 halted; u32 cmd; u32 mask; - xhci_dbg(xhci, "// Halt the HC\n"); - /* Disable all interrupts from the host controller */ mask = ~(XHCI_IRQS); halted = xhci_readl(xhci, &xhci->op_regs->status) & STS_HALT; if (!halted) @@ -91,6 +83,21 @@ int xhci_halt(struct xhci_hcd *xhci) cmd = xhci_readl(xhci, &xhci->op_regs->command); cmd &= mask; xhci_writel(xhci, cmd, &xhci->op_regs->command); +} + +/* + * Force HC into halt state. + * + * Disable any IRQs and clear the run/stop bit. + * HC will complete any current and actively pipelined transactions, and + * should halt within 16 microframes of the run/stop bit being cleared. + * Read HC Halted bit in the status register to see when the HC is finished. + * XXX: shouldn't we set HC_STATE_HALT here somewhere? + */ +int xhci_halt(struct xhci_hcd *xhci) +{ + xhci_dbg(xhci, "// Halt the HC\n"); + xhci_quiesce(xhci); return handshake(xhci, &xhci->op_regs->status, STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC); @@ -124,28 +131,6 @@ int xhci_reset(struct xhci_hcd *xhci) return handshake(xhci, &xhci->op_regs->command, CMD_RESET, 0, 250 * 1000); } -/* - * Stop the HC from processing the endpoint queues. - */ -static void xhci_quiesce(struct xhci_hcd *xhci) -{ - /* - * Queues are per endpoint, so we need to disable an endpoint or slot. - * - * To disable a slot, we need to insert a disable slot command on the - * command ring and ring the doorbell. This will also free any internal - * resources associated with the slot (which might not be what we want). - * - * A Release Endpoint command sounds better - doesn't free internal HC - * memory, but removes the endpoints from the schedule and releases the - * bandwidth, disables the doorbells, and clears the endpoint enable - * flag. Usually used prior to a set interface command. - * - * TODO: Implement after command ring code is done. - */ - BUG_ON(!HC_IS_RUNNING(xhci_to_hcd(xhci)->state)); - xhci_dbg(xhci, "Finished quiescing -- code not written yet\n"); -} #if 0 /* Set up MSI-X table for entry 0 (may claim other entries later) */ @@ -261,8 +246,14 @@ static void xhci_work(struct xhci_hcd *xhci) /* Flush posted writes */ xhci_readl(xhci, &xhci->ir_set->irq_pending); - /* FIXME this should be a delayed service routine that clears the EHB */ - xhci_handle_event(xhci); + if (xhci->xhc_state & XHCI_STATE_DYING) + xhci_dbg(xhci, "xHCI dying, ignoring interrupt. " + "Shouldn't IRQs be disabled?\n"); + else + /* FIXME this should be a delayed service routine + * that clears the EHB. + */ + xhci_handle_event(xhci); /* Clear the event handler busy flag (RW1C); the event ring should be empty. */ temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); @@ -335,7 +326,7 @@ void xhci_event_ring_work(unsigned long arg) spin_lock_irqsave(&xhci->lock, flags); temp = xhci_readl(xhci, &xhci->op_regs->status); xhci_dbg(xhci, "op reg status = 0x%x\n", temp); - if (temp == 0xffffffff) { + if (temp == 0xffffffff || (xhci->xhc_state & XHCI_STATE_DYING)) { xhci_dbg(xhci, "HW died, polling stopped.\n"); spin_unlock_irqrestore(&xhci->lock, flags); return; @@ -490,8 +481,6 @@ void xhci_stop(struct usb_hcd *hcd) struct xhci_hcd *xhci = hcd_to_xhci(hcd); spin_lock_irq(&xhci->lock); - if (HC_IS_RUNNING(hcd->state)) - xhci_quiesce(xhci); xhci_halt(xhci); xhci_reset(xhci); spin_unlock_irq(&xhci->lock); @@ -727,16 +716,22 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) * atomic context to this function, which may allocate memory. */ spin_lock_irqsave(&xhci->lock, flags); + if (xhci->xhc_state & XHCI_STATE_DYING) + goto dying; ret = xhci_queue_ctrl_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); spin_unlock_irqrestore(&xhci->lock, flags); } else if (usb_endpoint_xfer_bulk(&urb->ep->desc)) { spin_lock_irqsave(&xhci->lock, flags); + if (xhci->xhc_state & XHCI_STATE_DYING) + goto dying; ret = xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); spin_unlock_irqrestore(&xhci->lock, flags); } else if (usb_endpoint_xfer_int(&urb->ep->desc)) { spin_lock_irqsave(&xhci->lock, flags); + if (xhci->xhc_state & XHCI_STATE_DYING) + goto dying; ret = xhci_queue_intr_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); spin_unlock_irqrestore(&xhci->lock, flags); @@ -745,6 +740,12 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) } exit: return ret; +dying: + xhci_dbg(xhci, "Ep 0x%x: URB %p submitted for " + "non-responsive xHCI host.\n", + urb->ep->desc.bEndpointAddress, urb); + spin_unlock_irqrestore(&xhci->lock, flags); + return -ESHUTDOWN; } /* @@ -806,6 +807,17 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) kfree(td); return ret; } + if (xhci->xhc_state & XHCI_STATE_DYING) { + xhci_dbg(xhci, "Ep 0x%x: URB %p to be canceled on " + "non-responsive xHCI host.\n", + urb->ep->desc.bEndpointAddress, urb); + /* Let the stop endpoint command watchdog timer (which set this + * state) finish cleaning up the endpoint TD lists. We must + * have caught it in the middle of dropping a lock and giving + * back an URB. + */ + goto done; + } xhci_dbg(xhci, "Cancel URB %p\n", urb); xhci_dbg(xhci, "Event ring:\n"); @@ -817,12 +829,16 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) xhci_debug_ring(xhci, ep_ring); td = (struct xhci_td *) urb->hcpriv; - ep->cancels_pending++; list_add_tail(&td->cancelled_td_list, &ep->cancelled_td_list); /* Queue a stop endpoint command, but only if this is * the first cancellation to be handled. */ - if (ep->cancels_pending == 1) { + if (!(ep->ep_state & EP_HALT_PENDING)) { + ep->ep_state |= EP_HALT_PENDING; + ep->stop_cmds_pending++; + ep->stop_cmd_timer.expires = jiffies + + XHCI_STOP_EP_CMD_TIMEOUT * HZ; + add_timer(&ep->stop_cmd_timer); xhci_queue_stop_endpoint(xhci, urb->dev->slot_id, ep_index); xhci_ring_cmd_db(xhci); } @@ -1246,13 +1262,35 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) LAST_CTX_TO_EP_NUM(slot_ctx->dev_info)); xhci_zero_in_ctx(xhci, virt_dev); - /* Free any old rings */ + /* Install new rings and free or cache any old rings */ for (i = 1; i < 31; ++i) { - if (virt_dev->eps[i].new_ring) { - xhci_ring_free(xhci, virt_dev->eps[i].ring); - virt_dev->eps[i].ring = virt_dev->eps[i].new_ring; - virt_dev->eps[i].new_ring = NULL; + int rings_cached; + + if (!virt_dev->eps[i].new_ring) + continue; + /* Only cache or free the old ring if it exists. + * It may not if this is the first add of an endpoint. + */ + if (virt_dev->eps[i].ring) { + rings_cached = virt_dev->num_rings_cached; + if (rings_cached < XHCI_MAX_RINGS_CACHED) { + virt_dev->num_rings_cached++; + rings_cached = virt_dev->num_rings_cached; + virt_dev->ring_cache[rings_cached] = + virt_dev->eps[i].ring; + xhci_dbg(xhci, "Cached old ring, " + "%d ring%s cached\n", + rings_cached, + (rings_cached > 1) ? "s" : ""); + } else { + xhci_ring_free(xhci, virt_dev->eps[i].ring); + xhci_dbg(xhci, "Ring cache full (%d rings), " + "freeing ring\n", + virt_dev->num_rings_cached); + } } + virt_dev->eps[i].ring = virt_dev->eps[i].new_ring; + virt_dev->eps[i].new_ring = NULL; } return ret; @@ -1427,16 +1465,27 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct xhci_virt_device *virt_dev; unsigned long flags; u32 state; + int i; if (udev->slot_id == 0) return; + virt_dev = xhci->devs[udev->slot_id]; + if (!virt_dev) + return; + + /* Stop any wayward timer functions (which may grab the lock) */ + for (i = 0; i < 31; ++i) { + virt_dev->eps[i].ep_state &= ~EP_HALT_PENDING; + del_timer_sync(&virt_dev->eps[i].stop_cmd_timer); + } spin_lock_irqsave(&xhci->lock, flags); /* Don't disable the slot if the host controller is dead. */ state = xhci_readl(xhci, &xhci->op_regs->status); - if (state == 0xffffffff) { + if (state == 0xffffffff || (xhci->xhc_state & XHCI_STATE_DYING)) { xhci_free_virt_device(xhci, udev->slot_id); spin_unlock_irqrestore(&xhci->lock, flags); return; diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index b8fd270a8b0d..bffcef7a5545 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -125,6 +125,23 @@ void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring) kfree(ring); } +static void xhci_initialize_ring_info(struct xhci_ring *ring) +{ + /* The ring is empty, so the enqueue pointer == dequeue pointer */ + ring->enqueue = ring->first_seg->trbs; + ring->enq_seg = ring->first_seg; + ring->dequeue = ring->enqueue; + ring->deq_seg = ring->first_seg; + /* The ring is initialized to 0. The producer must write 1 to the cycle + * bit to handover ownership of the TRB, so PCS = 1. The consumer must + * compare CCS to the cycle bit to check ownership, so CCS = 1. + */ + ring->cycle_state = 1; + /* Not necessary for new rings, but needed for re-initialized rings */ + ring->enq_updates = 0; + ring->deq_updates = 0; +} + /** * Create a new ring with zero or more segments. * @@ -173,17 +190,7 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, " segment %p (virtual), 0x%llx (DMA)\n", prev, (unsigned long long)prev->dma); } - /* The ring is empty, so the enqueue pointer == dequeue pointer */ - ring->enqueue = ring->first_seg->trbs; - ring->enq_seg = ring->first_seg; - ring->dequeue = ring->enqueue; - ring->deq_seg = ring->first_seg; - /* The ring is initialized to 0. The producer must write 1 to the cycle - * bit to handover ownership of the TRB, so PCS = 1. The consumer must - * compare CCS to the cycle bit to check ownership, so CCS = 1. - */ - ring->cycle_state = 1; - + xhci_initialize_ring_info(ring); return ring; fail: @@ -191,6 +198,27 @@ fail: return 0; } +/* Zero an endpoint ring (except for link TRBs) and move the enqueue and dequeue + * pointers to the beginning of the ring. + */ +static void xhci_reinit_cached_ring(struct xhci_hcd *xhci, + struct xhci_ring *ring) +{ + struct xhci_segment *seg = ring->first_seg; + do { + memset(seg->trbs, 0, + sizeof(union xhci_trb)*TRBS_PER_SEGMENT); + /* All endpoint rings have link TRBs */ + xhci_link_segments(xhci, seg, seg->next, 1); + seg = seg->next; + } while (seg != ring->first_seg); + xhci_initialize_ring_info(ring); + /* td list should be empty since all URBs have been cancelled, + * but just in case... + */ + INIT_LIST_HEAD(&ring->td_list); +} + #define CTX_SIZE(_hcc) (HCC_64BYTE_CONTEXT(_hcc) ? 64 : 32) struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, @@ -248,6 +276,15 @@ struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, (ctx->bytes + (ep_index * CTX_SIZE(xhci->hcc_params))); } +static void xhci_init_endpoint_timer(struct xhci_hcd *xhci, + struct xhci_virt_ep *ep) +{ + init_timer(&ep->stop_cmd_timer); + ep->stop_cmd_timer.data = (unsigned long) ep; + ep->stop_cmd_timer.function = xhci_stop_endpoint_command_watchdog; + ep->xhci = xhci; +} + /* All the xhci_tds in the ring's TD list should be freed at this point */ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) { @@ -267,6 +304,12 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) if (dev->eps[i].ring) xhci_ring_free(xhci, dev->eps[i].ring); + if (dev->ring_cache) { + for (i = 0; i < dev->num_rings_cached; i++) + xhci_ring_free(xhci, dev->ring_cache[i]); + kfree(dev->ring_cache); + } + if (dev->in_ctx) xhci_free_container_ctx(xhci, dev->in_ctx); if (dev->out_ctx) @@ -309,15 +352,25 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id, (unsigned long long)dev->in_ctx->dma); - /* Initialize the cancellation list for each endpoint */ - for (i = 0; i < 31; i++) + /* Initialize the cancellation list and watchdog timers for each ep */ + for (i = 0; i < 31; i++) { + xhci_init_endpoint_timer(xhci, &dev->eps[i]); INIT_LIST_HEAD(&dev->eps[i].cancelled_td_list); + } /* Allocate endpoint 0 ring */ dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, flags); if (!dev->eps[0].ring) goto fail; + /* Allocate pointers to the ring cache */ + dev->ring_cache = kzalloc( + sizeof(struct xhci_ring *)*XHCI_MAX_RINGS_CACHED, + flags); + if (!dev->ring_cache) + goto fail; + dev->num_rings_cached = 0; + init_completion(&dev->cmd_completion); INIT_LIST_HEAD(&dev->cmd_list); @@ -544,8 +597,16 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, /* Set up the endpoint ring */ virt_dev->eps[ep_index].new_ring = xhci_ring_alloc(xhci, 1, true, mem_flags); - if (!virt_dev->eps[ep_index].new_ring) - return -ENOMEM; + if (!virt_dev->eps[ep_index].new_ring) { + /* Attempt to use the ring cache */ + if (virt_dev->num_rings_cached == 0) + return -ENOMEM; + virt_dev->eps[ep_index].new_ring = + virt_dev->ring_cache[virt_dev->num_rings_cached]; + virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL; + virt_dev->num_rings_cached--; + xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring); + } ep_ring = virt_dev->eps[ep_index].new_ring; ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state; @@ -768,14 +829,17 @@ struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, command->in_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, mem_flags); - if (!command->in_ctx) + if (!command->in_ctx) { + kfree(command); return NULL; + } if (allocate_completion) { command->completion = kzalloc(sizeof(struct completion), mem_flags); if (!command->completion) { xhci_free_container_ctx(xhci, command->in_ctx); + kfree(command); return NULL; } init_completion(command->completion); @@ -848,6 +912,163 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) xhci->page_shift = 0; } +static int xhci_test_trb_in_td(struct xhci_hcd *xhci, + struct xhci_segment *input_seg, + union xhci_trb *start_trb, + union xhci_trb *end_trb, + dma_addr_t input_dma, + struct xhci_segment *result_seg, + char *test_name, int test_number) +{ + unsigned long long start_dma; + unsigned long long end_dma; + struct xhci_segment *seg; + + start_dma = xhci_trb_virt_to_dma(input_seg, start_trb); + end_dma = xhci_trb_virt_to_dma(input_seg, end_trb); + + seg = trb_in_td(input_seg, start_trb, end_trb, input_dma); + if (seg != result_seg) { + xhci_warn(xhci, "WARN: %s TRB math test %d failed!\n", + test_name, test_number); + xhci_warn(xhci, "Tested TRB math w/ seg %p and " + "input DMA 0x%llx\n", + input_seg, + (unsigned long long) input_dma); + xhci_warn(xhci, "starting TRB %p (0x%llx DMA), " + "ending TRB %p (0x%llx DMA)\n", + start_trb, start_dma, + end_trb, end_dma); + xhci_warn(xhci, "Expected seg %p, got seg %p\n", + result_seg, seg); + return -1; + } + return 0; +} + +/* TRB math checks for xhci_trb_in_td(), using the command and event rings. */ +static int xhci_check_trb_in_td_math(struct xhci_hcd *xhci, gfp_t mem_flags) +{ + struct { + dma_addr_t input_dma; + struct xhci_segment *result_seg; + } simple_test_vector [] = { + /* A zeroed DMA field should fail */ + { 0, NULL }, + /* One TRB before the ring start should fail */ + { xhci->event_ring->first_seg->dma - 16, NULL }, + /* One byte before the ring start should fail */ + { xhci->event_ring->first_seg->dma - 1, NULL }, + /* Starting TRB should succeed */ + { xhci->event_ring->first_seg->dma, xhci->event_ring->first_seg }, + /* Ending TRB should succeed */ + { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 1)*16, + xhci->event_ring->first_seg }, + /* One byte after the ring end should fail */ + { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 1)*16 + 1, NULL }, + /* One TRB after the ring end should fail */ + { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT)*16, NULL }, + /* An address of all ones should fail */ + { (dma_addr_t) (~0), NULL }, + }; + struct { + struct xhci_segment *input_seg; + union xhci_trb *start_trb; + union xhci_trb *end_trb; + dma_addr_t input_dma; + struct xhci_segment *result_seg; + } complex_test_vector [] = { + /* Test feeding a valid DMA address from a different ring */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = xhci->event_ring->first_seg->trbs, + .end_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], + .input_dma = xhci->cmd_ring->first_seg->dma, + .result_seg = NULL, + }, + /* Test feeding a valid end TRB from a different ring */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = xhci->event_ring->first_seg->trbs, + .end_trb = &xhci->cmd_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], + .input_dma = xhci->cmd_ring->first_seg->dma, + .result_seg = NULL, + }, + /* Test feeding a valid start and end TRB from a different ring */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = xhci->cmd_ring->first_seg->trbs, + .end_trb = &xhci->cmd_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], + .input_dma = xhci->cmd_ring->first_seg->dma, + .result_seg = NULL, + }, + /* TRB in this ring, but after this TD */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = &xhci->event_ring->first_seg->trbs[0], + .end_trb = &xhci->event_ring->first_seg->trbs[3], + .input_dma = xhci->event_ring->first_seg->dma + 4*16, + .result_seg = NULL, + }, + /* TRB in this ring, but before this TD */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = &xhci->event_ring->first_seg->trbs[3], + .end_trb = &xhci->event_ring->first_seg->trbs[6], + .input_dma = xhci->event_ring->first_seg->dma + 2*16, + .result_seg = NULL, + }, + /* TRB in this ring, but after this wrapped TD */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], + .end_trb = &xhci->event_ring->first_seg->trbs[1], + .input_dma = xhci->event_ring->first_seg->dma + 2*16, + .result_seg = NULL, + }, + /* TRB in this ring, but before this wrapped TD */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], + .end_trb = &xhci->event_ring->first_seg->trbs[1], + .input_dma = xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 4)*16, + .result_seg = NULL, + }, + /* TRB not in this ring, and we have a wrapped TD */ + { .input_seg = xhci->event_ring->first_seg, + .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], + .end_trb = &xhci->event_ring->first_seg->trbs[1], + .input_dma = xhci->cmd_ring->first_seg->dma + 2*16, + .result_seg = NULL, + }, + }; + + unsigned int num_tests; + int i, ret; + + num_tests = sizeof(simple_test_vector) / sizeof(simple_test_vector[0]); + for (i = 0; i < num_tests; i++) { + ret = xhci_test_trb_in_td(xhci, + xhci->event_ring->first_seg, + xhci->event_ring->first_seg->trbs, + &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], + simple_test_vector[i].input_dma, + simple_test_vector[i].result_seg, + "Simple", i); + if (ret < 0) + return ret; + } + + num_tests = sizeof(complex_test_vector) / sizeof(complex_test_vector[0]); + for (i = 0; i < num_tests; i++) { + ret = xhci_test_trb_in_td(xhci, + complex_test_vector[i].input_seg, + complex_test_vector[i].start_trb, + complex_test_vector[i].end_trb, + complex_test_vector[i].input_dma, + complex_test_vector[i].result_seg, + "Complex", i); + if (ret < 0) + return ret; + } + xhci_dbg(xhci, "TRB math tests passed.\n"); + return 0; +} + + int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) { dma_addr_t dma; @@ -951,6 +1172,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, flags); if (!xhci->event_ring) goto fail; + if (xhci_check_trb_in_td_math(xhci, flags) < 0) + goto fail; xhci->erst.entries = pci_alloc_consistent(to_pci_dev(dev), sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS, &dma); diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 06595ec27bb7..e097008d6fb1 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -54,6 +54,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd) struct pci_dev *pdev = to_pci_dev(hcd->self.controller); int retval; + hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 1; + xhci->cap_regs = hcd->regs; xhci->op_regs = hcd->regs + HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase)); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 821b7b4709de..ee7bc7ecbc59 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -306,7 +306,7 @@ static void ring_ep_doorbell(struct xhci_hcd *xhci, /* Don't ring the doorbell for this endpoint if there are pending * cancellations because the we don't want to interrupt processing. */ - if (!ep->cancels_pending && !(ep_state & SET_DEQ_PENDING) + if (!(ep_state & EP_HALT_PENDING) && !(ep_state & SET_DEQ_PENDING) && !(ep_state & EP_HALTED)) { field = xhci_readl(xhci, db_addr) & DB_MASK; xhci_writel(xhci, field | EPI_TO_DB(ep_index), db_addr); @@ -475,6 +475,35 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, ep->ep_state |= SET_DEQ_PENDING; } +static inline void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci, + struct xhci_virt_ep *ep) +{ + ep->ep_state &= ~EP_HALT_PENDING; + /* Can't del_timer_sync in interrupt, so we attempt to cancel. If the + * timer is running on another CPU, we don't decrement stop_cmds_pending + * (since we didn't successfully stop the watchdog timer). + */ + if (del_timer(&ep->stop_cmd_timer)) + ep->stop_cmds_pending--; +} + +/* Must be called with xhci->lock held in interrupt context */ +static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci, + struct xhci_td *cur_td, int status, char *adjective) +{ + struct usb_hcd *hcd = xhci_to_hcd(xhci); + + cur_td->urb->hcpriv = NULL; + usb_hcd_unlink_urb_from_ep(hcd, cur_td->urb); + xhci_dbg(xhci, "Giveback %s URB %p\n", adjective, cur_td->urb); + + spin_unlock(&xhci->lock); + usb_hcd_giveback_urb(hcd, cur_td->urb, status); + kfree(cur_td); + spin_lock(&xhci->lock); + xhci_dbg(xhci, "%s URB given back\n", adjective); +} + /* * When we get a command completion for a Stop Endpoint Command, we need to * unlink any cancelled TDs from the ring. There are two ways to do that: @@ -497,9 +526,6 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, struct xhci_td *last_unlinked_td; struct xhci_dequeue_state deq_state; -#ifdef CONFIG_USB_HCD_STAT - ktime_t stop_time = ktime_get(); -#endif memset(&deq_state, 0, sizeof(deq_state)); slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]); @@ -507,8 +533,11 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, ep = &xhci->devs[slot_id]->eps[ep_index]; ep_ring = ep->ring; - if (list_empty(&ep->cancelled_td_list)) + if (list_empty(&ep->cancelled_td_list)) { + xhci_stop_watchdog_timer_in_irq(xhci, ep); + ring_ep_doorbell(xhci, slot_id, ep_index); return; + } /* Fix up the ep ring first, so HW stops executing cancelled TDs. * We have the xHCI lock, so nothing can modify this list until we drop @@ -535,9 +564,9 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, * the cancelled TD list for URB completion later. */ list_del(&cur_td->td_list); - ep->cancels_pending--; } last_unlinked_td = cur_td; + xhci_stop_watchdog_timer_in_irq(xhci, ep); /* If necessary, queue a Set Transfer Ring Dequeue Pointer command */ if (deq_state.new_deq_ptr && deq_state.new_deq_seg) { @@ -561,27 +590,136 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci, list_del(&cur_td->cancelled_td_list); /* Clean up the cancelled URB */ -#ifdef CONFIG_USB_HCD_STAT - hcd_stat_update(xhci->tp_stat, cur_td->urb->actual_length, - ktime_sub(stop_time, cur_td->start_time)); -#endif - cur_td->urb->hcpriv = NULL; - usb_hcd_unlink_urb_from_ep(xhci_to_hcd(xhci), cur_td->urb); - - xhci_dbg(xhci, "Giveback cancelled URB %p\n", cur_td->urb); - spin_unlock(&xhci->lock); /* Doesn't matter what we pass for status, since the core will * just overwrite it (because the URB has been unlinked). */ - usb_hcd_giveback_urb(xhci_to_hcd(xhci), cur_td->urb, 0); - kfree(cur_td); + xhci_giveback_urb_in_irq(xhci, cur_td, 0, "cancelled"); - spin_lock(&xhci->lock); + /* Stop processing the cancelled list if the watchdog timer is + * running. + */ + if (xhci->xhc_state & XHCI_STATE_DYING) + return; } while (cur_td != last_unlinked_td); /* Return to the event handler with xhci->lock re-acquired */ } +/* Watchdog timer function for when a stop endpoint command fails to complete. + * In this case, we assume the host controller is broken or dying or dead. The + * host may still be completing some other events, so we have to be careful to + * let the event ring handler and the URB dequeueing/enqueueing functions know + * through xhci->state. + * + * The timer may also fire if the host takes a very long time to respond to the + * command, and the stop endpoint command completion handler cannot delete the + * timer before the timer function is called. Another endpoint cancellation may + * sneak in before the timer function can grab the lock, and that may queue + * another stop endpoint command and add the timer back. So we cannot use a + * simple flag to say whether there is a pending stop endpoint command for a + * particular endpoint. + * + * Instead we use a combination of that flag and a counter for the number of + * pending stop endpoint commands. If the timer is the tail end of the last + * stop endpoint command, and the endpoint's command is still pending, we assume + * the host is dying. + */ +void xhci_stop_endpoint_command_watchdog(unsigned long arg) +{ + struct xhci_hcd *xhci; + struct xhci_virt_ep *ep; + struct xhci_virt_ep *temp_ep; + struct xhci_ring *ring; + struct xhci_td *cur_td; + int ret, i, j; + + ep = (struct xhci_virt_ep *) arg; + xhci = ep->xhci; + + spin_lock(&xhci->lock); + + ep->stop_cmds_pending--; + if (xhci->xhc_state & XHCI_STATE_DYING) { + xhci_dbg(xhci, "Stop EP timer ran, but another timer marked " + "xHCI as DYING, exiting.\n"); + spin_unlock(&xhci->lock); + return; + } + if (!(ep->stop_cmds_pending == 0 && (ep->ep_state & EP_HALT_PENDING))) { + xhci_dbg(xhci, "Stop EP timer ran, but no command pending, " + "exiting.\n"); + spin_unlock(&xhci->lock); + return; + } + + xhci_warn(xhci, "xHCI host not responding to stop endpoint command.\n"); + xhci_warn(xhci, "Assuming host is dying, halting host.\n"); + /* Oops, HC is dead or dying or at least not responding to the stop + * endpoint command. + */ + xhci->xhc_state |= XHCI_STATE_DYING; + /* Disable interrupts from the host controller and start halting it */ + xhci_quiesce(xhci); + spin_unlock(&xhci->lock); + + ret = xhci_halt(xhci); + + spin_lock(&xhci->lock); + if (ret < 0) { + /* This is bad; the host is not responding to commands and it's + * not allowing itself to be halted. At least interrupts are + * disabled, so we can set HC_STATE_HALT and notify the + * USB core. But if we call usb_hc_died(), it will attempt to + * disconnect all device drivers under this host. Those + * disconnect() methods will wait for all URBs to be unlinked, + * so we must complete them. + */ + xhci_warn(xhci, "Non-responsive xHCI host is not halting.\n"); + xhci_warn(xhci, "Completing active URBs anyway.\n"); + /* We could turn all TDs on the rings to no-ops. This won't + * help if the host has cached part of the ring, and is slow if + * we want to preserve the cycle bit. Skip it and hope the host + * doesn't touch the memory. + */ + } + for (i = 0; i < MAX_HC_SLOTS; i++) { + if (!xhci->devs[i]) + continue; + for (j = 0; j < 31; j++) { + temp_ep = &xhci->devs[i]->eps[j]; + ring = temp_ep->ring; + if (!ring) + continue; + xhci_dbg(xhci, "Killing URBs for slot ID %u, " + "ep index %u\n", i, j); + while (!list_empty(&ring->td_list)) { + cur_td = list_first_entry(&ring->td_list, + struct xhci_td, + td_list); + list_del(&cur_td->td_list); + if (!list_empty(&cur_td->cancelled_td_list)) + list_del(&cur_td->cancelled_td_list); + xhci_giveback_urb_in_irq(xhci, cur_td, + -ESHUTDOWN, "killed"); + } + while (!list_empty(&temp_ep->cancelled_td_list)) { + cur_td = list_first_entry( + &temp_ep->cancelled_td_list, + struct xhci_td, + cancelled_td_list); + list_del(&cur_td->cancelled_td_list); + xhci_giveback_urb_in_irq(xhci, cur_td, + -ESHUTDOWN, "killed"); + } + } + } + spin_unlock(&xhci->lock); + xhci_to_hcd(xhci)->state = HC_STATE_HALT; + xhci_dbg(xhci, "Calling usb_hc_died()\n"); + usb_hc_died(xhci_to_hcd(xhci)); + xhci_dbg(xhci, "xHCI host controller is dead.\n"); +} + /* * When we get a completion for a Set Transfer Ring Dequeue Pointer command, * we need to clear the set deq pending flag in the endpoint ring state, so that @@ -765,28 +903,32 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, virt_dev->in_ctx); /* Input ctx add_flags are the endpoint index plus one */ ep_index = xhci_last_valid_endpoint(ctrl_ctx->add_flags) - 1; - ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; - if (!ep_ring) { - /* This must have been an initial configure endpoint */ - xhci->devs[slot_id]->cmd_status = - GET_COMP_CODE(event->status); - complete(&xhci->devs[slot_id]->cmd_completion); - break; - } - ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state; - xhci_dbg(xhci, "Completed config ep cmd - last ep index = %d, " - "state = %d\n", ep_index, ep_state); + /* A usb_set_interface() call directly after clearing a halted + * condition may race on this quirky hardware. + * Not worth worrying about, since this is prototype hardware. + */ if (xhci->quirks & XHCI_RESET_EP_QUIRK && - ep_state & EP_HALTED) { + ep_index != (unsigned int) -1 && + ctrl_ctx->add_flags - SLOT_FLAG == + ctrl_ctx->drop_flags) { + ep_ring = xhci->devs[slot_id]->eps[ep_index].ring; + ep_state = xhci->devs[slot_id]->eps[ep_index].ep_state; + if (!(ep_state & EP_HALTED)) + goto bandwidth_change; + xhci_dbg(xhci, "Completed config ep cmd - " + "last ep index = %d, state = %d\n", + ep_index, ep_state); /* Clear our internal halted state and restart ring */ xhci->devs[slot_id]->eps[ep_index].ep_state &= ~EP_HALTED; ring_ep_doorbell(xhci, slot_id, ep_index); - } else { - xhci->devs[slot_id]->cmd_status = - GET_COMP_CODE(event->status); - complete(&xhci->devs[slot_id]->cmd_completion); + break; } +bandwidth_change: + xhci_dbg(xhci, "Completed config ep cmd\n"); + xhci->devs[slot_id]->cmd_status = + GET_COMP_CODE(event->status); + complete(&xhci->devs[slot_id]->cmd_completion); break; case TRB_TYPE(TRB_EVAL_CONTEXT): virt_dev = xhci->devs[slot_id]; @@ -849,8 +991,7 @@ static void handle_port_status(struct xhci_hcd *xhci, * TRB in this TD, this function returns that TRB's segment. Otherwise it * returns 0. */ -static struct xhci_segment *trb_in_td( - struct xhci_segment *start_seg, +struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, union xhci_trb *start_trb, union xhci_trb *end_trb, dma_addr_t suspect_dma) @@ -900,6 +1041,45 @@ static struct xhci_segment *trb_in_td( return 0; } +static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + struct xhci_td *td, union xhci_trb *event_trb) +{ + struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; + ep->ep_state |= EP_HALTED; + ep->stopped_td = td; + ep->stopped_trb = event_trb; + xhci_queue_reset_ep(xhci, slot_id, ep_index); + xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index); + xhci_ring_cmd_db(xhci); +} + +/* Check if an error has halted the endpoint ring. The class driver will + * cleanup the halt for a non-default control endpoint if we indicate a stall. + * However, a babble and other errors also halt the endpoint ring, and the class + * driver won't clear the halt in that case, so we need to issue a Set Transfer + * Ring Dequeue Pointer command manually. + */ +static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci, + struct xhci_ep_ctx *ep_ctx, + unsigned int trb_comp_code) +{ + /* TRB completion codes that may require a manual halt cleanup */ + if (trb_comp_code == COMP_TX_ERR || + trb_comp_code == COMP_BABBLE || + trb_comp_code == COMP_SPLIT_ERR) + /* The 0.96 spec says a babbling control endpoint + * is not halted. The 0.96 spec says it is. Some HW + * claims to be 0.95 compliant, but it halts the control + * endpoint anyway. Check if a babble halted the + * endpoint. + */ + if ((ep_ctx->ep_info & EP_STATE_MASK) == EP_STATE_HALTED) + return 1; + + return 0; +} + /* * If this function returns an error condition, it means it got a Transfer * event with a corrupted Slot ID, Endpoint ID, or TRB DMA address. @@ -1002,6 +1182,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, xhci_warn(xhci, "WARN: TRB error on endpoint\n"); status = -EILSEQ; break; + case COMP_SPLIT_ERR: case COMP_TX_ERR: xhci_warn(xhci, "WARN: transfer error on endpoint\n"); status = -EPROTO; @@ -1015,6 +1196,16 @@ static int handle_tx_event(struct xhci_hcd *xhci, status = -ENOSR; break; default: + if (trb_comp_code >= 224 && trb_comp_code <= 255) { + /* Vendor defined "informational" completion code, + * treat as not-an-error. + */ + xhci_dbg(xhci, "Vendor defined info completion code %u\n", + trb_comp_code); + xhci_dbg(xhci, "Treating code as success.\n"); + status = 0; + break; + } xhci_warn(xhci, "ERROR Unknown event condition, HC probably busted\n"); urb = NULL; goto cleanup; @@ -1043,15 +1234,14 @@ static int handle_tx_event(struct xhci_hcd *xhci, else status = 0; break; - case COMP_BABBLE: - /* The 0.96 spec says a babbling control endpoint - * is not halted. The 0.96 spec says it is. Some HW - * claims to be 0.95 compliant, but it halts the control - * endpoint anyway. Check if a babble halted the - * endpoint. - */ - if (ep_ctx->ep_info != EP_STATE_HALTED) + + default: + if (!xhci_requires_manual_halt_cleanup(xhci, + ep_ctx, trb_comp_code)) break; + xhci_dbg(xhci, "TRB error code %u, " + "halted endpoint index = %u\n", + trb_comp_code, ep_index); /* else fall through */ case COMP_STALL: /* Did we transfer part of the data (middle) phase? */ @@ -1063,15 +1253,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, else td->urb->actual_length = 0; - ep->stopped_td = td; - ep->stopped_trb = event_trb; - xhci_queue_reset_ep(xhci, slot_id, ep_index); - xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index); - xhci_ring_cmd_db(xhci); + xhci_cleanup_halted_endpoint(xhci, + slot_id, ep_index, td, event_trb); goto td_cleanup; - default: - /* Others already handled above */ - break; } /* * Did we transfer any data, despite the errors that might have @@ -1209,16 +1393,25 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep->stopped_td = td; ep->stopped_trb = event_trb; } else { - if (trb_comp_code == COMP_STALL || - trb_comp_code == COMP_BABBLE) { + if (trb_comp_code == COMP_STALL) { /* The transfer is completed from the driver's * perspective, but we need to issue a set dequeue * command for this stalled endpoint to move the dequeue * pointer past the TD. We can't do that here because - * the halt condition must be cleared first. + * the halt condition must be cleared first. Let the + * USB class driver clear the stall later. */ ep->stopped_td = td; ep->stopped_trb = event_trb; + } else if (xhci_requires_manual_halt_cleanup(xhci, + ep_ctx, trb_comp_code)) { + /* Other types of errors halt the endpoint, but the + * class driver doesn't call usb_reset_endpoint() unless + * the error is -EPIPE. Clear the halted status in the + * xHCI hardware manually. + */ + xhci_cleanup_halted_endpoint(xhci, + slot_id, ep_index, td, event_trb); } else { /* Update ring dequeue pointer */ while (ep_ring->dequeue != td->last_trb) @@ -1249,10 +1442,9 @@ td_cleanup: } list_del(&td->td_list); /* Was this TD slated to be cancelled but completed anyway? */ - if (!list_empty(&td->cancelled_td_list)) { + if (!list_empty(&td->cancelled_td_list)) list_del(&td->cancelled_td_list); - ep->cancels_pending--; - } + /* Leave the TD around for the reset endpoint function to use * (but only if it's not a control endpoint, since we already * queued the Set TR dequeue pointer command for stalled @@ -1331,6 +1523,14 @@ void xhci_handle_event(struct xhci_hcd *xhci) default: xhci->error_bitmask |= 1 << 3; } + /* Any of the above functions may drop and re-acquire the lock, so check + * to make sure a watchdog timer didn't mark the host as non-responsive. + */ + if (xhci->xhc_state & XHCI_STATE_DYING) { + xhci_dbg(xhci, "xHCI host dying, returning from " + "event handler.\n"); + return; + } if (update_ptrs) { /* Update SW and HC event ring dequeue pointer */ @@ -1555,6 +1755,21 @@ int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, return xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb, slot_id, ep_index); } +/* + * The TD size is the number of bytes remaining in the TD (including this TRB), + * right shifted by 10. + * It must fit in bits 21:17, so it can't be bigger than 31. + */ +static u32 xhci_td_remainder(unsigned int remainder) +{ + u32 max = (1 << (21 - 17 + 1)) - 1; + + if ((remainder >> 10) >= max) + return max << 17; + else + return (remainder >> 10) << 17; +} + static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index) { @@ -1612,6 +1827,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, do { u32 field = 0; u32 length_field = 0; + u32 remainder = 0; /* Don't change the cycle bit of the first TRB until later */ if (first_trb) @@ -1641,8 +1857,10 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags, (unsigned int) (addr + TRB_MAX_BUFF_SIZE) & ~(TRB_MAX_BUFF_SIZE - 1), (unsigned int) addr + trb_buff_len); } + remainder = xhci_td_remainder(urb->transfer_buffer_length - + running_total) ; length_field = TRB_LEN(trb_buff_len) | - TD_REMAINDER(urb->transfer_buffer_length - running_total) | + remainder | TRB_INTR_TARGET(0); queue_trb(xhci, ep_ring, false, lower_32_bits(addr), @@ -1755,6 +1973,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, /* Queue the first TRB, even if it's zero-length */ do { + u32 remainder = 0; field = 0; /* Don't change the cycle bit of the first TRB until later */ @@ -1773,8 +1992,10 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, td->last_trb = ep_ring->enqueue; field |= TRB_IOC; } + remainder = xhci_td_remainder(urb->transfer_buffer_length - + running_total); length_field = TRB_LEN(trb_buff_len) | - TD_REMAINDER(urb->transfer_buffer_length - running_total) | + remainder | TRB_INTR_TARGET(0); queue_trb(xhci, ep_ring, false, lower_32_bits(addr), @@ -1862,7 +2083,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, /* If there's data, queue data TRBs */ field = 0; length_field = TRB_LEN(urb->transfer_buffer_length) | - TD_REMAINDER(urb->transfer_buffer_length) | + xhci_td_remainder(urb->transfer_buffer_length) | TRB_INTR_TARGET(0); if (urb->transfer_buffer_length > 0) { if (setup->bRequestType & USB_DIR_IN) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 4b254b6fa245..877813505ef2 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -652,13 +652,17 @@ struct xhci_virt_ep { struct xhci_ring *new_ring; unsigned int ep_state; #define SET_DEQ_PENDING (1 << 0) -#define EP_HALTED (1 << 1) +#define EP_HALTED (1 << 1) /* For stall handling */ +#define EP_HALT_PENDING (1 << 2) /* For URB cancellation */ /* ---- Related to URB cancellation ---- */ struct list_head cancelled_td_list; - unsigned int cancels_pending; /* The TRB that was last reported in a stopped endpoint ring */ union xhci_trb *stopped_trb; struct xhci_td *stopped_td; + /* Watchdog timer for stop endpoint command to cancel URBs */ + struct timer_list stop_cmd_timer; + int stop_cmds_pending; + struct xhci_hcd *xhci; }; struct xhci_virt_device { @@ -673,6 +677,10 @@ struct xhci_virt_device { struct xhci_container_ctx *out_ctx; /* Used for addressing devices and configuration changes */ struct xhci_container_ctx *in_ctx; + /* Rings saved to ensure old alt settings can be re-instated */ + struct xhci_ring **ring_cache; + int num_rings_cached; +#define XHCI_MAX_RINGS_CACHED 31 struct xhci_virt_ep eps[31]; struct completion cmd_completion; /* Status of the last command issued for this device */ @@ -824,9 +832,6 @@ struct xhci_event_cmd { /* Normal TRB fields */ /* transfer_len bitmasks - bits 0:16 */ #define TRB_LEN(p) ((p) & 0x1ffff) -/* TD size - number of bytes remaining in the TD (including this TRB): - * bits 17 - 21. Shift the number of bytes by 10. */ -#define TD_REMAINDER(p) ((((p) >> 10) & 0x1f) << 17) /* Interrupter Target - which MSI-X vector to target the completion event at */ #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22) #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff) @@ -1022,6 +1027,8 @@ struct xhci_scratchpad { #define ERST_ENTRIES 1 /* Poll every 60 seconds */ #define POLL_TIMEOUT 60 +/* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */ +#define XHCI_STOP_EP_CMD_TIMEOUT 5 /* XXX: Make these module parameters */ @@ -1083,6 +1090,21 @@ struct xhci_hcd { struct timer_list event_ring_timer; int zombie; #endif + /* Host controller watchdog timer structures */ + unsigned int xhc_state; +/* Host controller is dying - not responding to commands. "I'm not dead yet!" + * + * xHC interrupts have been disabled and a watchdog timer will (or has already) + * halt the xHCI host, and complete all URBs with an -ESHUTDOWN code. Any code + * that sees this status (other than the timer that set it) should stop touching + * hardware immediately. Interrupt handlers should return immediately when + * they see this status (any time they drop and re-acquire xhci->lock). + * xhci_urb_dequeue() should call usb_hcd_check_unlink_urb() and return without + * putting the TD on the canceled list, etc. + * + * There are no reports of xHCI host controllers that display this issue. + */ +#define XHCI_STATE_DYING (1 << 0) /* Statistics */ int noops_submitted; int noops_handled; @@ -1223,6 +1245,7 @@ void xhci_unregister_pci(void); #endif /* xHCI host controller glue */ +void xhci_quiesce(struct xhci_hcd *xhci); int xhci_halt(struct xhci_hcd *xhci); int xhci_reset(struct xhci_hcd *xhci); int xhci_init(struct usb_hcd *hcd); @@ -1246,6 +1269,9 @@ void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); /* xHCI ring, segment, TRB, and TD functions */ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb); +struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, + union xhci_trb *start_trb, union xhci_trb *end_trb, + dma_addr_t suspect_dma); void xhci_ring_cmd_db(struct xhci_hcd *xhci); void *xhci_setup_one_noop(struct xhci_hcd *xhci); void xhci_handle_event(struct xhci_hcd *xhci); @@ -1278,6 +1304,7 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, struct xhci_dequeue_state *deq_state); +void xhci_stop_endpoint_command_watchdog(unsigned long arg); /* xHCI roothub code */ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index a9f06d76960f..3dab0c0b196f 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -213,8 +213,9 @@ static struct urb *simple_alloc_urb ( } static unsigned pattern = 0; -module_param (pattern, uint, S_IRUGO); -MODULE_PARM_DESC(pattern, "i/o pattern (0 == zeroes)"); +static unsigned mod_pattern; +module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)"); static inline void simple_fill_buf (struct urb *urb) { @@ -1567,6 +1568,8 @@ usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf) // FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. + pattern = mod_pattern; + if (code != USBTEST_REQUEST) return -EOPNOTSUPP; diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 10f3205798e8..385ec0520167 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -16,6 +16,7 @@ #include <linux/compat.h> #include <linux/mm.h> #include <linux/smp_lock.h> +#include <linux/scatterlist.h> #include <asm/uaccess.h> @@ -221,7 +222,7 @@ static void mon_free_buff(struct mon_pgmap *map, int npages); /* * This is a "chunked memcpy". It does not manipulate any counters. */ -static void mon_copy_to_buff(const struct mon_reader_bin *this, +static unsigned int mon_copy_to_buff(const struct mon_reader_bin *this, unsigned int off, const unsigned char *from, unsigned int length) { unsigned int step_len; @@ -246,6 +247,7 @@ static void mon_copy_to_buff(const struct mon_reader_bin *this, from += step_len; length -= step_len; } + return off; } /* @@ -394,14 +396,44 @@ static inline char mon_bin_get_setup(unsigned char *setupb, return 0; } -static char mon_bin_get_data(const struct mon_reader_bin *rp, - unsigned int offset, struct urb *urb, unsigned int length) +static unsigned int mon_bin_get_data(const struct mon_reader_bin *rp, + unsigned int offset, struct urb *urb, unsigned int length, + char *flag) { + int i; + struct scatterlist *sg; + unsigned int this_len; + + *flag = 0; + if (urb->num_sgs == 0) { + if (urb->transfer_buffer == NULL) { + *flag = 'Z'; + return length; + } + mon_copy_to_buff(rp, offset, urb->transfer_buffer, length); + length = 0; - if (urb->transfer_buffer == NULL) - return 'Z'; - mon_copy_to_buff(rp, offset, urb->transfer_buffer, length); - return 0; + } else { + /* If IOMMU coalescing occurred, we cannot trust sg_page */ + if (urb->sg->nents != urb->num_sgs) { + *flag = 'D'; + return length; + } + + /* Copy up to the first non-addressable segment */ + for_each_sg(urb->sg->sg, sg, urb->num_sgs, i) { + if (length == 0 || PageHighMem(sg_page(sg))) + break; + this_len = min_t(unsigned int, sg->length, length); + offset = mon_copy_to_buff(rp, offset, sg_virt(sg), + this_len); + length -= this_len; + } + if (i == 0) + *flag = 'D'; + } + + return length; } static void mon_bin_get_isodesc(const struct mon_reader_bin *rp, @@ -536,8 +568,9 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, } if (length != 0) { - ep->flag_data = mon_bin_get_data(rp, offset, urb, length); - if (ep->flag_data != 0) { /* Yes, it's 0x00, not '0' */ + length = mon_bin_get_data(rp, offset, urb, length, + &ep->flag_data); + if (length > 0) { delta = (ep->len_cap + PKT_ALIGN-1) & ~(PKT_ALIGN-1); ep->len_cap -= length; delta -= (ep->len_cap + PKT_ALIGN-1) & ~(PKT_ALIGN-1); diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index 9f1a9227ebe6..047568ff223d 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -10,6 +10,7 @@ #include <linux/time.h> #include <linux/mutex.h> #include <linux/debugfs.h> +#include <linux/scatterlist.h> #include <asm/uaccess.h> #include "usb_mon.h" @@ -137,6 +138,8 @@ static inline char mon_text_get_setup(struct mon_event_text *ep, static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb, int len, char ev_type, struct mon_bus *mbus) { + void *src; + if (len <= 0) return 'L'; if (len >= DATA_MAX) @@ -150,10 +153,24 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb, return '>'; } - if (urb->transfer_buffer == NULL) - return 'Z'; /* '0' would be not as pretty. */ + if (urb->num_sgs == 0) { + src = urb->transfer_buffer; + if (src == NULL) + return 'Z'; /* '0' would be not as pretty. */ + } else { + struct scatterlist *sg = urb->sg->sg; + + /* If IOMMU coalescing occurred, we cannot trust sg_page */ + if (urb->sg->nents != urb->num_sgs || + PageHighMem(sg_page(sg))) + return 'D'; + + /* For the text interface we copy only the first sg buffer */ + len = min_t(int, sg->length, len); + src = sg_virt(sg); + } - memcpy(ep->data, urb->transfer_buffer, len); + memcpy(ep->data, src, len); return 0; } diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index b84abd8ee8a5..d9db86498022 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -9,10 +9,9 @@ comment "Enable Host or Gadget support to see Inventra options" # (M)HDRC = (Multipoint) Highspeed Dual-Role Controller config USB_MUSB_HDRC depends on (USB || USB_GADGET) - depends on (ARM || BLACKFIN) - select NOP_USB_XCEIV if ARCH_DAVINCI + depends on (ARM || (BF54x && !BF544) || (BF52x && !BF522 && !BF523)) + select NOP_USB_XCEIV if (ARCH_DAVINCI || MACH_OMAP3EVM || BLACKFIN) select TWL4030_USB if MACH_OMAP_3430SDP - select NOP_USB_XCEIV if MACH_OMAP3EVM select USB_OTG_UTILS tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)' help diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index fcec87ea709e..fe4934d9602c 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -53,13 +53,11 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src) void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst) { void __iomem *fifo = hw_ep->fifo; + +#ifdef CONFIG_BF52x u8 epnum = hw_ep->epnum; u16 dma_reg = 0; - DBG(4, "%cX ep%d fifo %p count %d buf %p\n", - 'R', hw_ep->epnum, fifo, len, dst); - -#ifdef CONFIG_BF52x invalidate_dcache_range((unsigned int)dst, (unsigned int)(dst + len)); @@ -102,6 +100,9 @@ void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst) len & 0x01 ? (len >> 1) + 1 : len >> 1); #endif + DBG(4, "%cX ep%d fifo %p count %d buf %p\n", + 'R', hw_ep->epnum, fifo, len, dst); + dump_fifo_data(dst, len); } @@ -225,8 +226,9 @@ int musb_platform_get_vbus_status(struct musb *musb) return 0; } -void musb_platform_set_mode(struct musb *musb, u8 musb_mode) +int musb_platform_set_mode(struct musb *musb, u8 musb_mode) { + return -EIO; } int __init musb_platform_init(struct musb *musb) @@ -261,10 +263,6 @@ int __init musb_platform_init(struct musb *musb) SSYNC(); } - /* TODO - * Set SIC-IVG register - */ - /* Configure PLL oscillator register */ bfin_write_USB_PLLOSC_CTRL(0x30a8); SSYNC(); diff --git a/drivers/usb/musb/blackfin.h b/drivers/usb/musb/blackfin.h index a240c1e53d16..10b7d7584f4b 100644 --- a/drivers/usb/musb/blackfin.h +++ b/drivers/usb/musb/blackfin.h @@ -14,6 +14,43 @@ * Blackfin specific definitions */ +/* Anomalies notes: + * + * 05000450 - USB DMA Mode 1 Short Packet Data Corruption: + * MUSB driver is designed to transfer buffer of N * maxpacket size + * in DMA mode 1 and leave the rest of the data to the next + * transfer in DMA mode 0, so we never transmit a short packet in + * DMA mode 1. + * + * 05000463 - This anomaly doesn't affect this driver since it + * never uses L1 or L2 memory as data destination. + * + * 05000464 - This anomaly doesn't affect this driver since it + * never uses L1 or L2 memory as data source. + * + * 05000465 - The anomaly can be seen when SCLK is over 100 MHz, and there is + * no way to workaround for bulk endpoints. Since the wMaxPackSize + * of bulk is less than or equal to 512, while the fifo size of + * endpoint 5, 6, 7 is 1024, the double buffer mode is enabled + * automatically when these endpoints are used for bulk OUT. + * + * 05000466 - This anomaly doesn't affect this driver since it never mixes + * concurrent DMA and core accesses to the TX endpoint FIFOs. + * + * 05000467 - The workaround for this anomaly will introduce another + * anomaly - 05000465. + */ + +/* The Mentor USB DMA engine on BF52x (silicon v0.0 and v0.1) seems to be + * unstable in host mode. This may be caused by Anomaly 05000380. After + * digging out the root cause, we will change this number accordingly. + * So, need to either use silicon v0.2+ or disable DMA mode in MUSB. + */ +#if ANOMALY_05000380 && defined(CONFIG_BF52x) && \ + defined(CONFIG_USB_MUSB_HDRC) && !defined(CONFIG_MUSB_PIO_ONLY) +# error "Please use PIO mode in MUSB driver on bf52x chip v0.0 and v0.1" +#endif + #undef DUMP_FIFO_DATA #ifdef DUMP_FIFO_DATA static void dump_fifo_data(u8 *buf, u16 len) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 547e0e390726..49f2346afad3 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1319,7 +1319,6 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb) #endif u8 reg; char *type; - u16 hwvers, rev_major, rev_minor; char aInfo[78], aRevision[32], aDate[12]; void __iomem *mbase = musb->mregs; int status = 0; @@ -1391,11 +1390,10 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb) } /* log release info */ - hwvers = musb_read_hwvers(mbase); - rev_major = (hwvers >> 10) & 0x1f; - rev_minor = hwvers & 0x3ff; - snprintf(aRevision, 32, "%d.%d%s", rev_major, - rev_minor, (hwvers & 0x8000) ? "RC" : ""); + musb->hwvers = musb_read_hwvers(mbase); + snprintf(aRevision, 32, "%d.%d%s", MUSB_HWVERS_MAJOR(musb->hwvers), + MUSB_HWVERS_MINOR(musb->hwvers), + (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : ""); printk(KERN_DEBUG "%s: %sHDRC RTL version %s %s\n", musb_driver_name, type, aRevision, aDate); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 6aa5f22e5274..03d50909b078 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -322,6 +322,14 @@ struct musb { struct clk *clock; irqreturn_t (*isr)(int, void *); struct work_struct irq_work; +#define MUSB_HWVERS_MAJOR(x) ((x >> 10) & 0x1f) +#define MUSB_HWVERS_MINOR(x) (x & 0x3ff) +#define MUSB_HWVERS_RC 0x8000 +#define MUSB_HWVERS_1300 0x52C +#define MUSB_HWVERS_1400 0x590 +#define MUSB_HWVERS_1800 0x720 +#define MUSB_HWVERS_2000 0x800 + u16 hwvers; /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */ #define MUSB_PORT_STAT_RESUME (1 << 31) diff --git a/drivers/usb/musb/musb_dma.h b/drivers/usb/musb/musb_dma.h index 0a2c4e3602c1..916065ba9e70 100644 --- a/drivers/usb/musb/musb_dma.h +++ b/drivers/usb/musb/musb_dma.h @@ -80,6 +80,17 @@ struct musb_hw_ep; #define tusb_dma_omap() 0 #endif +/* Anomaly 05000456 - USB Receive Interrupt Is Not Generated in DMA Mode 1 + * Only allow DMA mode 1 to be used when the USB will actually generate the + * interrupts we expect. + */ +#ifdef CONFIG_BLACKFIN +# undef USE_MODE1 +# if !ANOMALY_05000456 +# define USE_MODE1 +# endif +#endif + /* * DMA channel status ... updated by the dma controller driver whenever that * status changes, and protected by the overall controller spinlock. diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 74073f9a43f0..c49b9ba025ab 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -429,112 +429,102 @@ void musb_g_tx(struct musb *musb, u8 epnum) DBG(4, "<== %s, txcsr %04x\n", musb_ep->end_point.name, csr); dma = is_dma_capable() ? musb_ep->dma : NULL; - do { - /* REVISIT for high bandwidth, MUSB_TXCSR_P_INCOMPTX - * probably rates reporting as a host error + + /* + * REVISIT: for high bandwidth, MUSB_TXCSR_P_INCOMPTX + * probably rates reporting as a host error. + */ + if (csr & MUSB_TXCSR_P_SENTSTALL) { + csr |= MUSB_TXCSR_P_WZC_BITS; + csr &= ~MUSB_TXCSR_P_SENTSTALL; + musb_writew(epio, MUSB_TXCSR, csr); + return; + } + + if (csr & MUSB_TXCSR_P_UNDERRUN) { + /* We NAKed, no big deal... little reason to care. */ + csr |= MUSB_TXCSR_P_WZC_BITS; + csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); + musb_writew(epio, MUSB_TXCSR, csr); + DBG(20, "underrun on ep%d, req %p\n", epnum, request); + } + + if (dma_channel_status(dma) == MUSB_DMA_STATUS_BUSY) { + /* + * SHOULD NOT HAPPEN... has with CPPI though, after + * changing SENDSTALL (and other cases); harmless? */ - if (csr & MUSB_TXCSR_P_SENTSTALL) { - csr |= MUSB_TXCSR_P_WZC_BITS; - csr &= ~MUSB_TXCSR_P_SENTSTALL; - musb_writew(epio, MUSB_TXCSR, csr); - break; - } + DBG(5, "%s dma still busy?\n", musb_ep->end_point.name); + return; + } + + if (request) { + u8 is_dma = 0; - if (csr & MUSB_TXCSR_P_UNDERRUN) { - /* we NAKed, no big deal ... little reason to care */ + if (dma && (csr & MUSB_TXCSR_DMAENAB)) { + is_dma = 1; csr |= MUSB_TXCSR_P_WZC_BITS; - csr &= ~(MUSB_TXCSR_P_UNDERRUN - | MUSB_TXCSR_TXPKTRDY); + csr &= ~(MUSB_TXCSR_DMAENAB | MUSB_TXCSR_P_UNDERRUN | + MUSB_TXCSR_TXPKTRDY); musb_writew(epio, MUSB_TXCSR, csr); - DBG(20, "underrun on ep%d, req %p\n", epnum, request); + /* Ensure writebuffer is empty. */ + csr = musb_readw(epio, MUSB_TXCSR); + request->actual += musb_ep->dma->actual_len; + DBG(4, "TXCSR%d %04x, DMA off, len %zu, req %p\n", + epnum, csr, musb_ep->dma->actual_len, request); } - if (dma_channel_status(dma) == MUSB_DMA_STATUS_BUSY) { - /* SHOULD NOT HAPPEN ... has with cppi though, after - * changing SENDSTALL (and other cases); harmless? + if (is_dma || request->actual == request->length) { + /* + * First, maybe a terminating short packet. Some DMA + * engines might handle this by themselves. */ - DBG(5, "%s dma still busy?\n", musb_ep->end_point.name); - break; - } - - if (request) { - u8 is_dma = 0; - - if (dma && (csr & MUSB_TXCSR_DMAENAB)) { - is_dma = 1; - csr |= MUSB_TXCSR_P_WZC_BITS; - csr &= ~(MUSB_TXCSR_DMAENAB - | MUSB_TXCSR_P_UNDERRUN - | MUSB_TXCSR_TXPKTRDY); - musb_writew(epio, MUSB_TXCSR, csr); - /* ensure writebuffer is empty */ - csr = musb_readw(epio, MUSB_TXCSR); - request->actual += musb_ep->dma->actual_len; - DBG(4, "TXCSR%d %04x, dma off, " - "len %zu, req %p\n", - epnum, csr, - musb_ep->dma->actual_len, - request); - } - - if (is_dma || request->actual == request->length) { - - /* First, maybe a terminating short packet. - * Some DMA engines might handle this by - * themselves. - */ - if ((request->zero - && request->length - && (request->length - % musb_ep->packet_sz) - == 0) + if ((request->zero && request->length + && request->length % musb_ep->packet_sz == 0) #ifdef CONFIG_USB_INVENTRA_DMA - || (is_dma && - ((!dma->desired_mode) || - (request->actual & - (musb_ep->packet_sz - 1)))) + || (is_dma && (!dma->desired_mode || + (request->actual & + (musb_ep->packet_sz - 1)))) #endif - ) { - /* on dma completion, fifo may not - * be available yet ... - */ - if (csr & MUSB_TXCSR_TXPKTRDY) - break; - - DBG(4, "sending zero pkt\n"); - musb_writew(epio, MUSB_TXCSR, - MUSB_TXCSR_MODE - | MUSB_TXCSR_TXPKTRDY); - request->zero = 0; - } - - /* ... or if not, then complete it */ - musb_g_giveback(musb_ep, request, 0); - - /* kickstart next transfer if appropriate; - * the packet that just completed might not - * be transmitted for hours or days. - * REVISIT for double buffering... - * FIXME revisit for stalls too... + ) { + /* + * On DMA completion, FIFO may not be + * available yet... */ - musb_ep_select(mbase, epnum); - csr = musb_readw(epio, MUSB_TXCSR); - if (csr & MUSB_TXCSR_FIFONOTEMPTY) - break; - request = musb_ep->desc - ? next_request(musb_ep) - : NULL; - if (!request) { - DBG(4, "%s idle now\n", - musb_ep->end_point.name); - break; - } + if (csr & MUSB_TXCSR_TXPKTRDY) + return; + + DBG(4, "sending zero pkt\n"); + musb_writew(epio, MUSB_TXCSR, MUSB_TXCSR_MODE + | MUSB_TXCSR_TXPKTRDY); + request->zero = 0; } - txstate(musb, to_musb_request(request)); + /* ... or if not, then complete it. */ + musb_g_giveback(musb_ep, request, 0); + + /* + * Kickstart next transfer if appropriate; + * the packet that just completed might not + * be transmitted for hours or days. + * REVISIT for double buffering... + * FIXME revisit for stalls too... + */ + musb_ep_select(mbase, epnum); + csr = musb_readw(epio, MUSB_TXCSR); + if (csr & MUSB_TXCSR_FIFONOTEMPTY) + return; + + if (!musb_ep->desc) { + DBG(4, "%s idle now\n", + musb_ep->end_point.name); + return; + } else + request = next_request(musb_ep); } - } while (0); + txstate(musb, to_musb_request(request)); + } } /* ------------------------------------------------------------ */ @@ -966,6 +956,7 @@ static int musb_gadget_enable(struct usb_ep *ep, musb_ep->desc = desc; musb_ep->busy = 0; + musb_ep->wedged = 0; status = 0; pr_debug("%s periph: enabled %s for %s %s, %smaxpacket %d\n", @@ -1220,7 +1211,7 @@ done: * * exported to ep0 code */ -int musb_gadget_set_halt(struct usb_ep *ep, int value) +static int musb_gadget_set_halt(struct usb_ep *ep, int value) { struct musb_ep *musb_ep = to_musb_ep(ep); u8 epnum = musb_ep->current_epnum; @@ -1262,7 +1253,8 @@ int musb_gadget_set_halt(struct usb_ep *ep, int value) goto done; } } - } + } else + musb_ep->wedged = 0; /* set/clear the stall and toggle bits */ DBG(2, "%s: %s stall\n", ep->name, value ? "set" : "clear"); @@ -1301,6 +1293,21 @@ done: return status; } +/* + * Sets the halt feature with the clear requests ignored + */ +static int musb_gadget_set_wedge(struct usb_ep *ep) +{ + struct musb_ep *musb_ep = to_musb_ep(ep); + + if (!ep) + return -EINVAL; + + musb_ep->wedged = 1; + + return usb_ep_set_halt(ep); +} + static int musb_gadget_fifo_status(struct usb_ep *ep) { struct musb_ep *musb_ep = to_musb_ep(ep); @@ -1371,6 +1378,7 @@ static const struct usb_ep_ops musb_ep_ops = { .queue = musb_gadget_queue, .dequeue = musb_gadget_dequeue, .set_halt = musb_gadget_set_halt, + .set_wedge = musb_gadget_set_wedge, .fifo_status = musb_gadget_fifo_status, .fifo_flush = musb_gadget_fifo_flush }; diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h index 59502da9f739..c8b140325d82 100644 --- a/drivers/usb/musb/musb_gadget.h +++ b/drivers/usb/musb/musb_gadget.h @@ -75,6 +75,8 @@ struct musb_ep { /* later things are modified based on usage */ struct list_head req_list; + u8 wedged; + /* true if lock must be dropped but req_list may not be advanced */ u8 busy; }; @@ -103,6 +105,4 @@ extern void musb_gadget_cleanup(struct musb *); extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); -extern int musb_gadget_set_halt(struct usb_ep *ep, int value); - #endif /* __MUSB_GADGET_H */ diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c index 522efb31b56b..8fba3f11e473 100644 --- a/drivers/usb/musb/musb_gadget_ep0.c +++ b/drivers/usb/musb/musb_gadget_ep0.c @@ -199,7 +199,6 @@ service_in_request(struct musb *musb, const struct usb_ctrlrequest *ctrlrequest) static void musb_g_ep0_giveback(struct musb *musb, struct usb_request *req) { musb_g_giveback(&musb->endpoints[0].ep_in, req, 0); - musb->ep0_state = MUSB_EP0_STAGE_SETUP; } /* @@ -258,30 +257,53 @@ __acquires(musb->lock) case USB_RECIP_INTERFACE: break; case USB_RECIP_ENDPOINT:{ - const u8 num = ctrlrequest->wIndex & 0x0f; - struct musb_ep *musb_ep; + const u8 epnum = + ctrlrequest->wIndex & 0x0f; + struct musb_ep *musb_ep; + struct musb_hw_ep *ep; + void __iomem *regs; + int is_in; + u16 csr; - if (num == 0 - || num >= MUSB_C_NUM_EPS - || ctrlrequest->wValue - != USB_ENDPOINT_HALT) + if (epnum == 0 || epnum >= MUSB_C_NUM_EPS || + ctrlrequest->wValue != USB_ENDPOINT_HALT) break; - if (ctrlrequest->wIndex & USB_DIR_IN) - musb_ep = &musb->endpoints[num].ep_in; + ep = musb->endpoints + epnum; + regs = ep->regs; + is_in = ctrlrequest->wIndex & USB_DIR_IN; + if (is_in) + musb_ep = &ep->ep_in; else - musb_ep = &musb->endpoints[num].ep_out; + musb_ep = &ep->ep_out; if (!musb_ep->desc) break; - /* REVISIT do it directly, no locking games */ - spin_unlock(&musb->lock); - musb_gadget_set_halt(&musb_ep->end_point, 0); - spin_lock(&musb->lock); + handled = 1; + /* Ignore request if endpoint is wedged */ + if (musb_ep->wedged) + break; + + musb_ep_select(mbase, epnum); + if (is_in) { + csr = musb_readw(regs, MUSB_TXCSR); + csr |= MUSB_TXCSR_CLRDATATOG | + MUSB_TXCSR_P_WZC_BITS; + csr &= ~(MUSB_TXCSR_P_SENDSTALL | + MUSB_TXCSR_P_SENTSTALL | + MUSB_TXCSR_TXPKTRDY); + musb_writew(regs, MUSB_TXCSR, csr); + } else { + csr = musb_readw(regs, MUSB_RXCSR); + csr |= MUSB_RXCSR_CLRDATATOG | + MUSB_RXCSR_P_WZC_BITS; + csr &= ~(MUSB_RXCSR_P_SENDSTALL | + MUSB_RXCSR_P_SENTSTALL); + musb_writew(regs, MUSB_RXCSR, csr); + } /* select ep0 again */ musb_ep_select(mbase, 0); - handled = 1; } break; default: /* class, vendor, etc ... delegate */ @@ -374,10 +396,8 @@ stall: int is_in; u16 csr; - if (epnum == 0 - || epnum >= MUSB_C_NUM_EPS - || ctrlrequest->wValue - != USB_ENDPOINT_HALT) + if (epnum == 0 || epnum >= MUSB_C_NUM_EPS || + ctrlrequest->wValue != USB_ENDPOINT_HALT) break; ep = musb->endpoints + epnum; @@ -392,24 +412,20 @@ stall: musb_ep_select(mbase, epnum); if (is_in) { - csr = musb_readw(regs, - MUSB_TXCSR); + csr = musb_readw(regs, MUSB_TXCSR); if (csr & MUSB_TXCSR_FIFONOTEMPTY) csr |= MUSB_TXCSR_FLUSHFIFO; csr |= MUSB_TXCSR_P_SENDSTALL | MUSB_TXCSR_CLRDATATOG | MUSB_TXCSR_P_WZC_BITS; - musb_writew(regs, MUSB_TXCSR, - csr); + musb_writew(regs, MUSB_TXCSR, csr); } else { - csr = musb_readw(regs, - MUSB_RXCSR); + csr = musb_readw(regs, MUSB_RXCSR); csr |= MUSB_RXCSR_P_SENDSTALL | MUSB_RXCSR_FLUSHFIFO | MUSB_RXCSR_CLRDATATOG | MUSB_RXCSR_P_WZC_BITS; - musb_writew(regs, MUSB_RXCSR, - csr); + musb_writew(regs, MUSB_RXCSR, csr); } /* select ep0 again */ diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index e3ab40a966eb..74c4c3698f1e 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -1642,18 +1642,18 @@ void musb_host_rx(struct musb *musb, u8 epnum) c = musb->dma_controller; if (usb_pipeisoc(pipe)) { - int status = 0; + int d_status = 0; struct usb_iso_packet_descriptor *d; d = urb->iso_frame_desc + qh->iso_idx; if (iso_err) { - status = -EILSEQ; + d_status = -EILSEQ; urb->error_count++; } if (rx_count > d->length) { - if (status == 0) { - status = -EOVERFLOW; + if (d_status == 0) { + d_status = -EOVERFLOW; urb->error_count++; } DBG(2, "** OVERFLOW %d into %d\n",\ @@ -1662,7 +1662,7 @@ void musb_host_rx(struct musb *musb, u8 epnum) length = d->length; } else length = rx_count; - d->status = status; + d->status = d_status; buf = urb->transfer_dma + d->offset; } else { length = rx_count; diff --git a/drivers/usb/musb/musb_regs.h b/drivers/usb/musb/musb_regs.h index cc1d71b57d3c..473a94ef905f 100644 --- a/drivers/usb/musb/musb_regs.h +++ b/drivers/usb/musb/musb_regs.h @@ -465,9 +465,9 @@ static inline u16 musb_read_hwvers(void __iomem *mbase) return 0; } -static inline u16 musb_read_target_reg_base(u8 i, void __iomem *mbase) +static inline void __iomem *musb_read_target_reg_base(u8 i, void __iomem *mbase) { - return 0; + return NULL; } static inline void musb_write_rxfunaddr(void __iomem *ep_target_regs, diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index 5e83f96d6b77..a237550f91bf 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -259,6 +259,11 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) if (!int_hsdma) goto done; +#ifdef CONFIG_BLACKFIN + /* Clear DMA interrupt flags */ + musb_writeb(mbase, MUSB_HSDMA_INTR, int_hsdma); +#endif + for (bchannel = 0; bchannel < MUSB_HSDMA_CHANNELS; bchannel++) { if (int_hsdma & (1 << bchannel)) { musb_channel = (struct musb_dma_channel *) @@ -280,7 +285,7 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) channel->actual_len = addr - musb_channel->start_addr; - DBG(2, "ch %p, 0x%x -> 0x%x (%d / %d) %s\n", + DBG(2, "ch %p, 0x%x -> 0x%x (%zu / %d) %s\n", channel, musb_channel->start_addr, addr, channel->actual_len, musb_channel->len, @@ -324,11 +329,6 @@ static irqreturn_t dma_controller_irq(int irq, void *private_data) } } -#ifdef CONFIG_BLACKFIN - /* Clear DMA interrup flags */ - musb_writeb(mbase, MUSB_HSDMA_INTR, int_hsdma); -#endif - retval = IRQ_HANDLED; done: spin_unlock_irqrestore(&musb->lock, flags); diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 6761d2088db8..83beeac5e7bf 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -315,7 +315,7 @@ int musb_platform_exit(struct musb *musb) musb_platform_suspend(musb); clk_put(musb->clock); - musb->clock = 0; + musb->clock = NULL; return 0; } diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig index aa884d072f0b..de56b3d743d7 100644 --- a/drivers/usb/otg/Kconfig +++ b/drivers/usb/otg/Kconfig @@ -41,6 +41,15 @@ config ISP1301_OMAP This driver can also be built as a module. If so, the module will be called isp1301_omap. +config USB_ULPI + bool "Generic ULPI Transceiver Driver" + depends on ARM + help + Enable this to support ULPI connected USB OTG transceivers which + are likely found on embedded boards. + + The only chip currently supported is NXP's ISP1504 + config TWL4030_USB tristate "TWL4030 USB Transceiver Driver" depends on TWL4030_CORE && REGULATOR_TWL4030 diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile index 208167856529..aeb49a8ec412 100644 --- a/drivers/usb/otg/Makefile +++ b/drivers/usb/otg/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_USB_GPIO_VBUS) += gpio_vbus.o obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o obj-$(CONFIG_TWL4030_USB) += twl4030-usb.o obj-$(CONFIG_NOP_USB_XCEIV) += nop-usb-xceiv.o +obj-$(CONFIG_USB_ULPI) += ulpi.o ccflags-$(CONFIG_USB_DEBUG) += -DDEBUG ccflags-$(CONFIG_USB_GADGET_DEBUG) += -DDEBUG diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 9e3e7a5c258b..bd9883f41e63 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -598,12 +598,12 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl) * USB_LINK_VBUS state. musb_hdrc won't care until it * starts to handle softconnect right. */ - twl4030charger_usb_en(status == USB_LINK_VBUS); - if (status == USB_LINK_NONE) twl4030_phy_suspend(twl, 0); else twl4030_phy_resume(twl); + + twl4030charger_usb_en(status == USB_LINK_VBUS); } sysfs_notify(&twl->dev->kobj, NULL, "vbus"); diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c new file mode 100644 index 000000000000..896527456b7e --- /dev/null +++ b/drivers/usb/otg/ulpi.c @@ -0,0 +1,136 @@ +/* + * Generic ULPI USB transceiver support + * + * Copyright (C) 2009 Daniel Mack <daniel@caiaq.de> + * + * Based on sources from + * + * Sascha Hauer <s.hauer@pengutronix.de> + * Freescale Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/kernel.h> +#include <linux/usb.h> +#include <linux/usb/otg.h> +#include <linux/usb/ulpi.h> + +/* ULPI register addresses */ +#define ULPI_VID_LOW 0x00 /* Vendor ID low */ +#define ULPI_VID_HIGH 0x01 /* Vendor ID high */ +#define ULPI_PID_LOW 0x02 /* Product ID low */ +#define ULPI_PID_HIGH 0x03 /* Product ID high */ +#define ULPI_ITFCTL 0x07 /* Interface Control */ +#define ULPI_OTGCTL 0x0A /* OTG Control */ + +/* add to above register address to access Set/Clear functions */ +#define ULPI_REG_SET 0x01 +#define ULPI_REG_CLEAR 0x02 + +/* ULPI OTG Control Register bits */ +#define ID_PULL_UP (1 << 0) /* enable ID Pull Up */ +#define DP_PULL_DOWN (1 << 1) /* enable DP Pull Down */ +#define DM_PULL_DOWN (1 << 2) /* enable DM Pull Down */ +#define DISCHRG_VBUS (1 << 3) /* Discharge Vbus */ +#define CHRG_VBUS (1 << 4) /* Charge Vbus */ +#define DRV_VBUS (1 << 5) /* Drive Vbus */ +#define DRV_VBUS_EXT (1 << 6) /* Drive Vbus external */ +#define USE_EXT_VBUS_IND (1 << 7) /* Use ext. Vbus indicator */ + +#define ULPI_ID(vendor, product) (((vendor) << 16) | (product)) + +#define TR_FLAG(flags, a, b) (((flags) & a) ? b : 0) + +/* ULPI hardcoded IDs, used for probing */ +static unsigned int ulpi_ids[] = { + ULPI_ID(0x04cc, 0x1504), /* NXP ISP1504 */ +}; + +static int ulpi_set_flags(struct otg_transceiver *otg) +{ + unsigned int flags = 0; + + if (otg->flags & USB_OTG_PULLUP_ID) + flags |= ID_PULL_UP; + + if (otg->flags & USB_OTG_PULLDOWN_DM) + flags |= DM_PULL_DOWN; + + if (otg->flags & USB_OTG_PULLDOWN_DP) + flags |= DP_PULL_DOWN; + + if (otg->flags & USB_OTG_EXT_VBUS_INDICATOR) + flags |= USE_EXT_VBUS_IND; + + return otg_io_write(otg, flags, ULPI_OTGCTL + ULPI_REG_SET); +} + +static int ulpi_init(struct otg_transceiver *otg) +{ + int i, vid, pid; + + vid = (otg_io_read(otg, ULPI_VID_HIGH) << 8) | + otg_io_read(otg, ULPI_VID_LOW); + pid = (otg_io_read(otg, ULPI_PID_HIGH) << 8) | + otg_io_read(otg, ULPI_PID_LOW); + + pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid); + + for (i = 0; i < ARRAY_SIZE(ulpi_ids); i++) + if (ulpi_ids[i] == ULPI_ID(vid, pid)) + return ulpi_set_flags(otg); + + pr_err("ULPI ID does not match any known transceiver.\n"); + return -ENODEV; +} + +static int ulpi_set_vbus(struct otg_transceiver *otg, bool on) +{ + unsigned int flags = otg_io_read(otg, ULPI_OTGCTL); + + flags &= ~(DRV_VBUS | DRV_VBUS_EXT); + + if (on) { + if (otg->flags & USB_OTG_DRV_VBUS) + flags |= DRV_VBUS; + + if (otg->flags & USB_OTG_DRV_VBUS_EXT) + flags |= DRV_VBUS_EXT; + } + + return otg_io_write(otg, flags, ULPI_OTGCTL + ULPI_REG_SET); +} + +struct otg_transceiver * +otg_ulpi_create(struct otg_io_access_ops *ops, + unsigned int flags) +{ + struct otg_transceiver *otg; + + otg = kzalloc(sizeof(*otg), GFP_KERNEL); + if (!otg) + return NULL; + + otg->label = "ULPI"; + otg->flags = flags; + otg->io_ops = ops; + otg->init = ulpi_init; + otg->set_vbus = ulpi_set_vbus; + + return otg; +} +EXPORT_SYMBOL_GPL(otg_ulpi_create); + diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 131e61adaaf7..a9c2dec8e3fb 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -1,4 +1,6 @@ /* + * Copyright (C) 2009 by Bart Hartgers (bart.hartgers+ark3116@gmail.com) + * Original version: * Copyright (C) 2006 * Simon Schulz (ark3116_driver <at> auctionant.de) * @@ -6,10 +8,13 @@ * - implements a driver for the arkmicro ark3116 chipset (vendor=0x6547, * productid=0x0232) (used in a datacable called KQ-U8A) * - * - based on code by krisfx -> thanks !! - * (see http://www.linuxquestions.org/questions/showthread.php?p=2184457#post2184457) + * Supports full modem status lines, break, hardware flow control. Does not + * support software flow control, since I do not know how to enable it in hw. * - * - based on logs created by usbsnoopy + * This driver is a essentially new implementation. I initially dug + * into the old ark3116.c driver and suddenly realized the ark3116 is + * a 16450 with a USB interface glued to it. See comments at the + * bottom of this file. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -19,15 +24,31 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/ioctl.h> #include <linux/tty.h> +#include <linux/tty_flip.h> #include <linux/module.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include <linux/serial.h> +#include <linux/serial_reg.h> #include <linux/uaccess.h> - +#include <linux/mutex.h> +#include <linux/spinlock.h> static int debug; +/* + * Version information + */ + +#define DRIVER_VERSION "v0.5" +#define DRIVER_AUTHOR "Bart Hartgers <bart.hartgers+ark3116@gmail.com>" +#define DRIVER_DESC "USB ARK3116 serial/IrDA driver" +#define DRIVER_DEV_DESC "ARK3116 RS232/IrDA" +#define DRIVER_NAME "ark3116" + +/* usb timeout of 1 second */ +#define ARK_TIMEOUT (1*HZ) static struct usb_device_id id_table [] = { { USB_DEVICE(0x6547, 0x0232) }, @@ -45,118 +66,152 @@ static int is_irda(struct usb_serial *serial) return 0; } -static inline void ARK3116_SND(struct usb_serial *serial, int seq, - __u8 request, __u8 requesttype, - __u16 value, __u16 index) +struct ark3116_private { + wait_queue_head_t delta_msr_wait; + struct async_icount icount; + int irda; /* 1 for irda device */ + + /* protects hw register updates */ + struct mutex hw_lock; + + int quot; /* baudrate divisor */ + __u32 lcr; /* line control register value */ + __u32 hcr; /* handshake control register (0x8) + * value */ + __u32 mcr; /* modem contol register value */ + + /* protects the status values below */ + spinlock_t status_lock; + __u32 msr; /* modem status register value */ + __u32 lsr; /* line status register value */ +}; + +static int ark3116_write_reg(struct usb_serial *serial, + unsigned reg, __u8 val) { int result; + /* 0xfe 0x40 are magic values taken from original driver */ result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - request, requesttype, value, index, - NULL, 0x00, 1000); - dbg("%03d > ok", seq); + 0xfe, 0x40, val, reg, + NULL, 0, ARK_TIMEOUT); + return result; } -static inline void ARK3116_RCV(struct usb_serial *serial, int seq, - __u8 request, __u8 requesttype, - __u16 value, __u16 index, __u8 expected, - char *buf) +static int ark3116_read_reg(struct usb_serial *serial, + unsigned reg, unsigned char *buf) { int result; + /* 0xfe 0xc0 are magic values taken from original driver */ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - request, requesttype, value, index, - buf, 0x0000001, 1000); - if (result) - dbg("%03d < %d bytes [0x%02X]", seq, result, - ((unsigned char *)buf)[0]); + 0xfe, 0xc0, 0, reg, + buf, 1, ARK_TIMEOUT); + if (result < 0) + return result; else - dbg("%03d < 0 bytes", seq); + return buf[0]; } -static inline void ARK3116_RCV_QUIET(struct usb_serial *serial, - __u8 request, __u8 requesttype, - __u16 value, __u16 index, char *buf) +static inline int calc_divisor(int bps) { - usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - request, requesttype, value, index, - buf, 0x0000001, 1000); + /* Original ark3116 made some exceptions in rounding here + * because windows did the same. Assume that is not really + * necessary. + * Crystal is 12MHz, probably because of USB, but we divide by 4? + */ + return (12000000 + 2*bps) / (4*bps); } static int ark3116_attach(struct usb_serial *serial) { - char *buf; + struct usb_serial_port *port = serial->port[0]; + struct ark3116_private *priv; + + /* make sure we have our end-points */ + if ((serial->num_bulk_in == 0) || + (serial->num_bulk_out == 0) || + (serial->num_interrupt_in == 0)) { + dev_err(&serial->dev->dev, + "%s - missing endpoint - " + "bulk in: %d, bulk out: %d, int in %d\n", + KBUILD_MODNAME, + serial->num_bulk_in, + serial->num_bulk_out, + serial->num_interrupt_in); + return -EINVAL; + } - buf = kmalloc(1, GFP_KERNEL); - if (!buf) { - dbg("error kmalloc -> out of mem?"); + priv = kzalloc(sizeof(struct ark3116_private), + GFP_KERNEL); + if (!priv) return -ENOMEM; - } - if (is_irda(serial)) - dbg("IrDA mode"); + init_waitqueue_head(&priv->delta_msr_wait); + mutex_init(&priv->hw_lock); + spin_lock_init(&priv->status_lock); + + priv->irda = is_irda(serial); - /* 3 */ - ARK3116_SND(serial, 3, 0xFE, 0x40, 0x0008, 0x0002); - ARK3116_SND(serial, 4, 0xFE, 0x40, 0x0008, 0x0001); - ARK3116_SND(serial, 5, 0xFE, 0x40, 0x0000, 0x0008); - ARK3116_SND(serial, 6, 0xFE, 0x40, is_irda(serial) ? 0x0001 : 0x0000, - 0x000B); + usb_set_serial_port_data(port, priv); - if (is_irda(serial)) { - ARK3116_SND(serial, 1001, 0xFE, 0x40, 0x0000, 0x000C); - ARK3116_SND(serial, 1002, 0xFE, 0x40, 0x0041, 0x000D); - ARK3116_SND(serial, 1003, 0xFE, 0x40, 0x0001, 0x000A); + /* setup the hardware */ + ark3116_write_reg(serial, UART_IER, 0); + /* disable DMA */ + ark3116_write_reg(serial, UART_FCR, 0); + /* handshake control */ + priv->hcr = 0; + ark3116_write_reg(serial, 0x8 , 0); + /* modem control */ + priv->mcr = 0; + ark3116_write_reg(serial, UART_MCR, 0); + + if (!(priv->irda)) { + ark3116_write_reg(serial, 0xb , 0); + } else { + ark3116_write_reg(serial, 0xb , 1); + ark3116_write_reg(serial, 0xc , 0); + ark3116_write_reg(serial, 0xd , 0x41); + ark3116_write_reg(serial, 0xa , 1); } - /* <-- seq7 */ - ARK3116_RCV(serial, 7, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf); - ARK3116_SND(serial, 8, 0xFE, 0x40, 0x0080, 0x0003); - ARK3116_SND(serial, 9, 0xFE, 0x40, 0x001A, 0x0000); - ARK3116_SND(serial, 10, 0xFE, 0x40, 0x0000, 0x0001); - ARK3116_SND(serial, 11, 0xFE, 0x40, 0x0000, 0x0003); - - /* <-- seq12 */ - ARK3116_RCV(serial, 12, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf); - ARK3116_SND(serial, 13, 0xFE, 0x40, 0x0000, 0x0004); - - /* 14 */ - ARK3116_RCV(serial, 14, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf); - ARK3116_SND(serial, 15, 0xFE, 0x40, 0x0000, 0x0004); - - /* 16 */ - ARK3116_RCV(serial, 16, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf); - /* --> seq17 */ - ARK3116_SND(serial, 17, 0xFE, 0x40, 0x0001, 0x0004); - - /* <-- seq18 */ - ARK3116_RCV(serial, 18, 0xFE, 0xC0, 0x0000, 0x0004, 0x01, buf); - - /* --> seq19 */ - ARK3116_SND(serial, 19, 0xFE, 0x40, 0x0003, 0x0004); - - /* <-- seq20 */ - /* seems like serial port status info (RTS, CTS, ...) */ - /* returns modem control line status?! */ - ARK3116_RCV(serial, 20, 0xFE, 0xC0, 0x0000, 0x0006, 0xFF, buf); - - /* set 9600 baud & do some init?! */ - ARK3116_SND(serial, 147, 0xFE, 0x40, 0x0083, 0x0003); - ARK3116_SND(serial, 148, 0xFE, 0x40, 0x0038, 0x0000); - ARK3116_SND(serial, 149, 0xFE, 0x40, 0x0001, 0x0001); - if (is_irda(serial)) - ARK3116_SND(serial, 1004, 0xFE, 0x40, 0x0000, 0x0009); - ARK3116_SND(serial, 150, 0xFE, 0x40, 0x0003, 0x0003); - ARK3116_RCV(serial, 151, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf); - ARK3116_SND(serial, 152, 0xFE, 0x40, 0x0000, 0x0003); - ARK3116_RCV(serial, 153, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf); - ARK3116_SND(serial, 154, 0xFE, 0x40, 0x0003, 0x0003); + /* setup baudrate */ + ark3116_write_reg(serial, UART_LCR, UART_LCR_DLAB); - kfree(buf); + /* setup for 9600 8N1 */ + priv->quot = calc_divisor(9600); + ark3116_write_reg(serial, UART_DLL, priv->quot & 0xff); + ark3116_write_reg(serial, UART_DLM, (priv->quot>>8) & 0xff); + + priv->lcr = UART_LCR_WLEN8; + ark3116_write_reg(serial, UART_LCR, UART_LCR_WLEN8); + + ark3116_write_reg(serial, 0xe, 0); + + if (priv->irda) + ark3116_write_reg(serial, 0x9, 0); + + dev_info(&serial->dev->dev, + "%s using %s mode\n", + KBUILD_MODNAME, + priv->irda ? "IrDA" : "RS232"); return 0; } +static void ark3116_release(struct usb_serial *serial) +{ + struct usb_serial_port *port = serial->port[0]; + struct ark3116_private *priv = usb_get_serial_port_data(port); + + /* device is closed, so URBs and DMA should be down */ + + usb_set_serial_port_data(port, NULL); + + mutex_destroy(&priv->hw_lock); + + kfree(priv); +} + static void ark3116_init_termios(struct tty_struct *tty) { struct ktermios *termios = tty->termios; @@ -172,200 +227,189 @@ static void ark3116_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { struct usb_serial *serial = port->serial; + struct ark3116_private *priv = usb_get_serial_port_data(port); struct ktermios *termios = tty->termios; unsigned int cflag = termios->c_cflag; - int baud; - int ark3116_baud; - char *buf; - char config; - - config = 0; - - dbg("%s - port %d", __func__, port->number); + int bps = tty_get_baud_rate(tty); + int quot; + __u8 lcr, hcr, eval; + + /* set data bit count */ + switch (cflag & CSIZE) { + case CS5: + lcr = UART_LCR_WLEN5; + break; + case CS6: + lcr = UART_LCR_WLEN6; + break; + case CS7: + lcr = UART_LCR_WLEN7; + break; + default: + case CS8: + lcr = UART_LCR_WLEN8; + break; + } + if (cflag & CSTOPB) + lcr |= UART_LCR_STOP; + if (cflag & PARENB) + lcr |= UART_LCR_PARITY; + if (!(cflag & PARODD)) + lcr |= UART_LCR_EPAR; +#ifdef CMSPAR + if (cflag & CMSPAR) + lcr |= UART_LCR_SPAR; +#endif + /* handshake control */ + hcr = (cflag & CRTSCTS) ? 0x03 : 0x00; + + /* calc baudrate */ + dbg("%s - setting bps to %d", __func__, bps); + eval = 0; + switch (bps) { + case 0: + quot = calc_divisor(9600); + break; + default: + if ((bps < 75) || (bps > 3000000)) + bps = 9600; + quot = calc_divisor(bps); + break; + case 460800: + eval = 1; + quot = calc_divisor(bps); + break; + case 921600: + eval = 2; + quot = calc_divisor(bps); + break; + } + /* Update state: synchronize */ + mutex_lock(&priv->hw_lock); - cflag = termios->c_cflag; - termios->c_cflag &= ~(CMSPAR|CRTSCTS); + /* keep old LCR_SBC bit */ + lcr |= (priv->lcr & UART_LCR_SBC); - buf = kmalloc(1, GFP_KERNEL); - if (!buf) { - dbg("error kmalloc"); - *termios = *old_termios; - return; - } + dbg("%s - setting hcr:0x%02x,lcr:0x%02x,quot:%d", + __func__, hcr, lcr, quot); - /* set data bit count (8/7/6/5) */ - if (cflag & CSIZE) { - switch (cflag & CSIZE) { - case CS5: - config |= 0x00; - dbg("setting CS5"); - break; - case CS6: - config |= 0x01; - dbg("setting CS6"); - break; - case CS7: - config |= 0x02; - dbg("setting CS7"); - break; - default: - dbg("CSIZE was set but not CS5-CS8, using CS8!"); - /* fall through */ - case CS8: - config |= 0x03; - dbg("setting CS8"); - break; - } + /* handshake control */ + if (priv->hcr != hcr) { + priv->hcr = hcr; + ark3116_write_reg(serial, 0x8, hcr); } - /* set parity (NONE/EVEN/ODD) */ - if (cflag & PARENB) { - if (cflag & PARODD) { - config |= 0x08; - dbg("setting parity to ODD"); - } else { - config |= 0x18; - dbg("setting parity to EVEN"); - } - } else { - dbg("setting parity to NONE"); + /* baudrate */ + if (priv->quot != quot) { + priv->quot = quot; + priv->lcr = lcr; /* need to write lcr anyway */ + + /* disable DMA since transmit/receive is + * shadowed by UART_DLL + */ + ark3116_write_reg(serial, UART_FCR, 0); + + ark3116_write_reg(serial, UART_LCR, + lcr|UART_LCR_DLAB); + ark3116_write_reg(serial, UART_DLL, quot & 0xff); + ark3116_write_reg(serial, UART_DLM, (quot>>8) & 0xff); + + /* restore lcr */ + ark3116_write_reg(serial, UART_LCR, lcr); + /* magic baudrate thingy: not sure what it does, + * but windows does this as well. + */ + ark3116_write_reg(serial, 0xe, eval); + + /* enable DMA */ + ark3116_write_reg(serial, UART_FCR, UART_FCR_DMA_SELECT); + } else if (priv->lcr != lcr) { + priv->lcr = lcr; + ark3116_write_reg(serial, UART_LCR, lcr); } - /* set stop bit (1/2) */ - if (cflag & CSTOPB) { - config |= 0x04; - dbg("setting 2 stop bits"); - } else { - dbg("setting 1 stop bit"); - } + mutex_unlock(&priv->hw_lock); - /* set baudrate */ - baud = tty_get_baud_rate(tty); - - switch (baud) { - case 75: - case 150: - case 300: - case 600: - case 1200: - case 1800: - case 2400: - case 4800: - case 9600: - case 19200: - case 38400: - case 57600: - case 115200: - case 230400: - case 460800: - /* Report the resulting rate back to the caller */ - tty_encode_baud_rate(tty, baud, baud); - break; - /* set 9600 as default (if given baudrate is invalid for example) */ - default: - tty_encode_baud_rate(tty, 9600, 9600); - case 0: - baud = 9600; + /* check for software flow control */ + if (I_IXOFF(tty) || I_IXON(tty)) { + dev_warn(&serial->dev->dev, + "%s: don't know how to do software flow control\n", + KBUILD_MODNAME); } - /* - * found by try'n'error, be careful, maybe there are other options - * for multiplicator etc! (3.5 for example) - */ - if (baud == 460800) - /* strange, for 460800 the formula is wrong - * if using round() then 9600baud is wrong) */ - ark3116_baud = 7; - else - ark3116_baud = 3000000 / baud; - - /* ? */ - ARK3116_RCV(serial, 0, 0xFE, 0xC0, 0x0000, 0x0003, 0x03, buf); - - /* offset = buf[0]; */ - /* offset = 0x03; */ - /* dbg("using 0x%04X as target for 0x0003:", 0x0080 + offset); */ - - /* set baudrate */ - dbg("setting baudrate to %d (->reg=%d)", baud, ark3116_baud); - ARK3116_SND(serial, 147, 0xFE, 0x40, 0x0083, 0x0003); - ARK3116_SND(serial, 148, 0xFE, 0x40, - (ark3116_baud & 0x00FF), 0x0000); - ARK3116_SND(serial, 149, 0xFE, 0x40, - (ark3116_baud & 0xFF00) >> 8, 0x0001); - ARK3116_SND(serial, 150, 0xFE, 0x40, 0x0003, 0x0003); - - /* ? */ - ARK3116_RCV(serial, 151, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf); - ARK3116_SND(serial, 152, 0xFE, 0x40, 0x0000, 0x0003); - - /* set data bit count, stop bit count & parity: */ - dbg("updating bit count, stop bit or parity (cfg=0x%02X)", config); - ARK3116_RCV(serial, 153, 0xFE, 0xC0, 0x0000, 0x0003, 0x00, buf); - ARK3116_SND(serial, 154, 0xFE, 0x40, config, 0x0003); + /* Don't rewrite B0 */ + if (tty_termios_baud_rate(termios)) + tty_termios_encode_baud_rate(termios, bps, bps); +} - if (cflag & CRTSCTS) - dbg("CRTSCTS not supported by chipset?!"); +static void ark3116_close(struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; - /* TEST ARK3116_SND(154, 0xFE, 0x40, 0xFFFF, 0x0006); */ + if (serial->dev) { + /* disable DMA */ + ark3116_write_reg(serial, UART_FCR, 0); - kfree(buf); + /* deactivate interrupts */ + ark3116_write_reg(serial, UART_IER, 0); - return; + /* shutdown any bulk reads that might be going on */ + if (serial->num_bulk_out) + usb_kill_urb(port->write_urb); + if (serial->num_bulk_in) + usb_kill_urb(port->read_urb); + if (serial->num_interrupt_in) + usb_kill_urb(port->interrupt_in_urb); + } } static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; + struct ark3116_private *priv = usb_get_serial_port_data(port); struct usb_serial *serial = port->serial; - char *buf; - int result = 0; - - dbg("%s - port %d", __func__, port->number); + unsigned char *buf; + int result; buf = kmalloc(1, GFP_KERNEL); - if (!buf) { - dbg("error kmalloc -> out of mem?"); + if (buf == NULL) return -ENOMEM; - } result = usb_serial_generic_open(tty, port); - if (result) + if (result) { + dbg("%s - usb_serial_generic_open failed: %d", + __func__, result); goto err_out; + } - /* open */ - ARK3116_RCV(serial, 111, 0xFE, 0xC0, 0x0000, 0x0003, 0x02, buf); - - ARK3116_SND(serial, 112, 0xFE, 0x40, 0x0082, 0x0003); - ARK3116_SND(serial, 113, 0xFE, 0x40, 0x001A, 0x0000); - ARK3116_SND(serial, 114, 0xFE, 0x40, 0x0000, 0x0001); - ARK3116_SND(serial, 115, 0xFE, 0x40, 0x0002, 0x0003); - - ARK3116_RCV(serial, 116, 0xFE, 0xC0, 0x0000, 0x0004, 0x03, buf); - ARK3116_SND(serial, 117, 0xFE, 0x40, 0x0002, 0x0004); - - ARK3116_RCV(serial, 118, 0xFE, 0xC0, 0x0000, 0x0004, 0x02, buf); - ARK3116_SND(serial, 119, 0xFE, 0x40, 0x0000, 0x0004); - - ARK3116_RCV(serial, 120, 0xFE, 0xC0, 0x0000, 0x0004, 0x00, buf); + /* setup termios */ + if (tty) + ark3116_set_termios(tty, port, NULL); - ARK3116_SND(serial, 121, 0xFE, 0x40, 0x0001, 0x0004); + /* remove any data still left: also clears error state */ + ark3116_read_reg(serial, UART_RX, buf); - ARK3116_RCV(serial, 122, 0xFE, 0xC0, 0x0000, 0x0004, 0x01, buf); + /* read modem status */ + priv->msr = ark3116_read_reg(serial, UART_MSR, buf); + /* read line status */ + priv->lsr = ark3116_read_reg(serial, UART_LSR, buf); - ARK3116_SND(serial, 123, 0xFE, 0x40, 0x0003, 0x0004); + result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); + if (result) { + dev_err(&port->dev, "submit irq_in urb failed %d\n", + result); + ark3116_close(port); + goto err_out; + } - /* returns different values (control lines?!) */ - ARK3116_RCV(serial, 124, 0xFE, 0xC0, 0x0000, 0x0006, 0xFF, buf); + /* activate interrupts */ + ark3116_write_reg(port->serial, UART_IER, UART_IER_MSI|UART_IER_RLSI); - /* initialise termios */ - if (tty) - ark3116_set_termios(tty, port, &tmp_termios); + /* enable DMA */ + ark3116_write_reg(port->serial, UART_FCR, UART_FCR_DMA_SELECT); err_out: kfree(buf); - return result; } @@ -373,6 +417,7 @@ static int ark3116_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; + struct ark3116_private *priv = usb_get_serial_port_data(port); struct serial_struct serstruct; void __user *user_arg = (void __user *)arg; @@ -394,9 +439,48 @@ static int ark3116_ioctl(struct tty_struct *tty, struct file *file, if (copy_from_user(&serstruct, user_arg, sizeof(serstruct))) return -EFAULT; return 0; - default: - dbg("%s cmd 0x%04x not supported", __func__, cmd); + case TIOCMIWAIT: + for (;;) { + struct async_icount prev = priv->icount; + interruptible_sleep_on(&priv->delta_msr_wait); + /* see if a signal did it */ + if (signal_pending(current)) + return -ERESTARTSYS; + if ((prev.rng == priv->icount.rng) && + (prev.dsr == priv->icount.dsr) && + (prev.dcd == priv->icount.dcd) && + (prev.cts == priv->icount.cts)) + return -EIO; + if ((arg & TIOCM_RNG && + (prev.rng != priv->icount.rng)) || + (arg & TIOCM_DSR && + (prev.dsr != priv->icount.dsr)) || + (arg & TIOCM_CD && + (prev.dcd != priv->icount.dcd)) || + (arg & TIOCM_CTS && + (prev.cts != priv->icount.cts))) + return 0; + } break; + case TIOCGICOUNT: { + struct serial_icounter_struct icount; + struct async_icount cnow = priv->icount; + memset(&icount, 0, sizeof(icount)); + icount.cts = cnow.cts; + icount.dsr = cnow.dsr; + icount.rng = cnow.rng; + icount.dcd = cnow.dcd; + icount.rx = cnow.rx; + icount.tx = cnow.tx; + icount.frame = cnow.frame; + icount.overrun = cnow.overrun; + icount.parity = cnow.parity; + icount.brk = cnow.brk; + icount.buf_overrun = cnow.buf_overrun; + if (copy_to_user(user_arg, &icount, sizeof(icount))) + return -EFAULT; + return 0; + } } return -ENOIOCTLCMD; @@ -405,32 +489,273 @@ static int ark3116_ioctl(struct tty_struct *tty, struct file *file, static int ark3116_tiocmget(struct tty_struct *tty, struct file *file) { struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = port->serial; - char *buf; - char temp; + struct ark3116_private *priv = usb_get_serial_port_data(port); + __u32 status; + __u32 ctrl; + unsigned long flags; + + mutex_lock(&priv->hw_lock); + ctrl = priv->mcr; + mutex_unlock(&priv->hw_lock); + + spin_lock_irqsave(&priv->status_lock, flags); + status = priv->msr; + spin_unlock_irqrestore(&priv->status_lock, flags); + + return (status & UART_MSR_DSR ? TIOCM_DSR : 0) | + (status & UART_MSR_CTS ? TIOCM_CTS : 0) | + (status & UART_MSR_RI ? TIOCM_RI : 0) | + (status & UART_MSR_DCD ? TIOCM_CD : 0) | + (ctrl & UART_MCR_DTR ? TIOCM_DTR : 0) | + (ctrl & UART_MCR_RTS ? TIOCM_RTS : 0) | + (ctrl & UART_MCR_OUT1 ? TIOCM_OUT1 : 0) | + (ctrl & UART_MCR_OUT2 ? TIOCM_OUT2 : 0); +} - /* seems like serial port status info (RTS, CTS, ...) is stored - * in reg(?) 0x0006 - * pcb connection point 11 = GND -> sets bit4 of response - * pcb connection point 7 = GND -> sets bit6 of response +static int ark3116_tiocmset(struct tty_struct *tty, struct file *file, + unsigned set, unsigned clr) +{ + struct usb_serial_port *port = tty->driver_data; + struct ark3116_private *priv = usb_get_serial_port_data(port); + + /* we need to take the mutex here, to make sure that the value + * in priv->mcr is actually the one that is in the hardware */ - buf = kmalloc(1, GFP_KERNEL); - if (!buf) { - dbg("error kmalloc"); - return -ENOMEM; + mutex_lock(&priv->hw_lock); + + if (set & TIOCM_RTS) + priv->mcr |= UART_MCR_RTS; + if (set & TIOCM_DTR) + priv->mcr |= UART_MCR_DTR; + if (set & TIOCM_OUT1) + priv->mcr |= UART_MCR_OUT1; + if (set & TIOCM_OUT2) + priv->mcr |= UART_MCR_OUT2; + if (clr & TIOCM_RTS) + priv->mcr &= ~UART_MCR_RTS; + if (clr & TIOCM_DTR) + priv->mcr &= ~UART_MCR_DTR; + if (clr & TIOCM_OUT1) + priv->mcr &= ~UART_MCR_OUT1; + if (clr & TIOCM_OUT2) + priv->mcr &= ~UART_MCR_OUT2; + + ark3116_write_reg(port->serial, UART_MCR, priv->mcr); + + mutex_unlock(&priv->hw_lock); + + return 0; +} + +static void ark3116_break_ctl(struct tty_struct *tty, int break_state) +{ + struct usb_serial_port *port = tty->driver_data; + struct ark3116_private *priv = usb_get_serial_port_data(port); + + /* LCR is also used for other things: protect access */ + mutex_lock(&priv->hw_lock); + + if (break_state) + priv->lcr |= UART_LCR_SBC; + else + priv->lcr &= ~UART_LCR_SBC; + + ark3116_write_reg(port->serial, UART_LCR, priv->lcr); + + mutex_unlock(&priv->hw_lock); +} + +static void ark3116_update_msr(struct usb_serial_port *port, __u8 msr) +{ + struct ark3116_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + + spin_lock_irqsave(&priv->status_lock, flags); + priv->msr = msr; + spin_unlock_irqrestore(&priv->status_lock, flags); + + if (msr & UART_MSR_ANY_DELTA) { + /* update input line counters */ + if (msr & UART_MSR_DCTS) + priv->icount.cts++; + if (msr & UART_MSR_DDSR) + priv->icount.dsr++; + if (msr & UART_MSR_DDCD) + priv->icount.dcd++; + if (msr & UART_MSR_TERI) + priv->icount.rng++; + wake_up_interruptible(&priv->delta_msr_wait); } +} - /* read register */ - ARK3116_RCV_QUIET(serial, 0xFE, 0xC0, 0x0000, 0x0006, buf); - temp = buf[0]; - kfree(buf); +static void ark3116_update_lsr(struct usb_serial_port *port, __u8 lsr) +{ + struct ark3116_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + + spin_lock_irqsave(&priv->status_lock, flags); + /* combine bits */ + priv->lsr |= lsr; + spin_unlock_irqrestore(&priv->status_lock, flags); + + if (lsr&UART_LSR_BRK_ERROR_BITS) { + if (lsr & UART_LSR_BI) + priv->icount.brk++; + if (lsr & UART_LSR_FE) + priv->icount.frame++; + if (lsr & UART_LSR_PE) + priv->icount.parity++; + if (lsr & UART_LSR_OE) + priv->icount.overrun++; + } +} - /* i do not really know if bit4=CTS and bit6=DSR... just a - * quick guess! - */ - return (temp & (1<<4) ? TIOCM_CTS : 0) - | (temp & (1<<6) ? TIOCM_DSR : 0); +static void ark3116_read_int_callback(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + int status = urb->status; + const __u8 *data = urb->transfer_buffer; + int result; + + switch (status) { + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", + __func__, status); + return; + default: + dbg("%s - nonzero urb status received: %d", + __func__, status); + break; + case 0: /* success */ + /* discovered this by trail and error... */ + if ((urb->actual_length == 4) && (data[0] == 0xe8)) { + const __u8 id = data[1]&UART_IIR_ID; + dbg("%s: iir=%02x", __func__, data[1]); + if (id == UART_IIR_MSI) { + dbg("%s: msr=%02x", __func__, data[3]); + ark3116_update_msr(port, data[3]); + break; + } else if (id == UART_IIR_RLSI) { + dbg("%s: lsr=%02x", __func__, data[2]); + ark3116_update_lsr(port, data[2]); + break; + } + } + /* + * Not sure what this data meant... + */ + usb_serial_debug_data(debug, &port->dev, + __func__, + urb->actual_length, + urb->transfer_buffer); + break; + } + + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) + dev_err(&urb->dev->dev, + "%s - Error %d submitting interrupt urb\n", + __func__, result); +} + + +/* Data comes in via the bulk (data) URB, erors/interrupts via the int URB. + * This means that we cannot be sure which data byte has an associated error + * condition, so we report an error for all data in the next bulk read. + * + * Actually, there might even be a window between the bulk data leaving the + * ark and reading/resetting the lsr in the read_bulk_callback where an + * interrupt for the next data block could come in. + * Without somekind of ordering on the ark, we would have to report the + * error for the next block of data as well... + * For now, let's pretend this can't happen. + */ + +static void send_to_tty(struct tty_struct *tty, + const unsigned char *chars, + size_t size, char flag) +{ + if (size == 0) + return; + if (flag == TTY_NORMAL) { + tty_insert_flip_string(tty, chars, size); + } else { + int i; + for (i = 0; i < size; ++i) + tty_insert_flip_char(tty, chars[i], flag); + } +} + +static void ark3116_read_bulk_callback(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + struct ark3116_private *priv = usb_get_serial_port_data(port); + const __u8 *data = urb->transfer_buffer; + int status = urb->status; + struct tty_struct *tty; + unsigned long flags; + int result; + char flag; + __u32 lsr; + + switch (status) { + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", + __func__, status); + return; + default: + dbg("%s - nonzero urb status received: %d", + __func__, status); + break; + case 0: /* success */ + + spin_lock_irqsave(&priv->status_lock, flags); + lsr = priv->lsr; + /* clear error bits */ + priv->lsr &= ~UART_LSR_BRK_ERROR_BITS; + spin_unlock_irqrestore(&priv->status_lock, flags); + + if (unlikely(lsr & UART_LSR_BI)) + flag = TTY_BREAK; + else if (unlikely(lsr & UART_LSR_PE)) + flag = TTY_PARITY; + else if (unlikely(lsr & UART_LSR_FE)) + flag = TTY_FRAME; + else + flag = TTY_NORMAL; + + tty = tty_port_tty_get(&port->port); + if (tty) { + tty_buffer_request_room(tty, urb->actual_length + 1); + /* overrun is special, not associated with a char */ + if (unlikely(lsr & UART_LSR_OE)) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + send_to_tty(tty, data, urb->actual_length, flag); + tty_flip_buffer_push(tty); + tty_kref_put(tty); + } + + /* Throttle the device if requested by tty */ + spin_lock_irqsave(&port->lock, flags); + port->throttled = port->throttle_req; + if (port->throttled) { + spin_unlock_irqrestore(&port->lock, flags); + return; + } else + spin_unlock_irqrestore(&port->lock, flags); + } + /* Continue reading from device */ + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) + dev_err(&urb->dev->dev, "%s - failed resubmitting" + " read urb, error %d\n", __func__, result); } static struct usb_driver ark3116_driver = { @@ -450,11 +775,17 @@ static struct usb_serial_driver ark3116_device = { .usb_driver = &ark3116_driver, .num_ports = 1, .attach = ark3116_attach, + .release = ark3116_release, .set_termios = ark3116_set_termios, .init_termios = ark3116_init_termios, .ioctl = ark3116_ioctl, .tiocmget = ark3116_tiocmget, + .tiocmset = ark3116_tiocmset, .open = ark3116_open, + .close = ark3116_close, + .break_ctl = ark3116_break_ctl, + .read_int_callback = ark3116_read_int_callback, + .read_bulk_callback = ark3116_read_bulk_callback, }; static int __init ark3116_init(void) @@ -465,7 +796,12 @@ static int __init ark3116_init(void) if (retval) return retval; retval = usb_register(&ark3116_driver); - if (retval) + if (retval == 0) { + printk(KERN_INFO "%s:" + DRIVER_VERSION ":" + DRIVER_DESC "\n", + KBUILD_MODNAME); + } else usb_serial_deregister(&ark3116_device); return retval; } @@ -480,6 +816,109 @@ module_init(ark3116_init); module_exit(ark3116_exit); MODULE_LICENSE("GPL"); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); + module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled or not"); +MODULE_PARM_DESC(debug, "Enable debug"); +/* + * The following describes what I learned from studying the old + * ark3116.c driver, disassembling the windows driver, and some lucky + * guesses. Since I do not have any datasheet or other + * documentation, inaccuracies are almost guaranteed. + * + * Some specs for the ARK3116 can be found here: + * http://web.archive.org/web/20060318000438/ + * www.arkmicro.com/en/products/view.php?id=10 + * On that page, 2 GPIO pins are mentioned: I assume these are the + * OUT1 and OUT2 pins of the UART, so I added support for those + * through the MCR. Since the pins are not available on my hardware, + * I could not verify this. + * Also, it states there is "on-chip hardware flow control". I have + * discovered how to enable that. Unfortunately, I do not know how to + * enable XON/XOFF (software) flow control, which would need support + * from the chip as well to work. Because of the wording on the web + * page there is a real possibility the chip simply does not support + * software flow control. + * + * I got my ark3116 as part of a mobile phone adapter cable. On the + * PCB, the following numbered contacts are present: + * + * 1:- +5V + * 2:o DTR + * 3:i RX + * 4:i DCD + * 5:o RTS + * 6:o TX + * 7:i RI + * 8:i DSR + * 10:- 0V + * 11:i CTS + * + * On my chip, all signals seem to be 3.3V, but 5V tolerant. But that + * may be different for the one you have ;-). + * + * The windows driver limits the registers to 0-F, so I assume there + * are actually 16 present on the device. + * + * On an UART interrupt, 4 bytes of data come in on the interrupt + * endpoint. The bytes are 0xe8 IIR LSR MSR. + * + * The baudrate seems to be generated from the 12MHz crystal, using + * 4-times subsampling. So quot=12e6/(4*baud). Also see description + * of register E. + * + * Registers 0-7: + * These seem to be the same as for a regular 16450. The FCR is set + * to UART_FCR_DMA_SELECT (0x8), I guess to enable transfers between + * the UART and the USB bridge/DMA engine. + * + * Register 8: + * By trial and error, I found out that bit 0 enables hardware CTS, + * stopping TX when CTS is +5V. Bit 1 does the same for RTS, making + * RTS +5V when the 3116 cannot transfer the data to the USB bus + * (verified by disabling the reading URB). Note that as far as I can + * tell, the windows driver does NOT use this, so there might be some + * hardware bug or something. + * + * According to a patch provided here + * (http://lkml.org/lkml/2009/7/26/56), the ARK3116 can also be used + * as an IrDA dongle. Since I do not have such a thing, I could not + * investigate that aspect. However, I can speculate ;-). + * + * - IrDA encodes data differently than RS232. Most likely, one of + * the bits in registers 9..E enables the IR ENDEC (encoder/decoder). + * - Depending on the IR transceiver, the input and output need to be + * inverted, so there are probably bits for that as well. + * - IrDA is half-duplex, so there should be a bit for selecting that. + * + * This still leaves at least two registers unaccounted for. Perhaps + * The chip can do XON/XOFF or CRC in HW? + * + * Register 9: + * Set to 0x00 for IrDA, when the baudrate is initialised. + * + * Register A: + * Set to 0x01 for IrDA, at init. + * + * Register B: + * Set to 0x01 for IrDA, 0x00 for RS232, at init. + * + * Register C: + * Set to 00 for IrDA, at init. + * + * Register D: + * Set to 0x41 for IrDA, at init. + * + * Register E: + * Somekind of baudrate override. The windows driver seems to set + * this to 0x00 for normal baudrates, 0x01 for 460800, 0x02 for 921600. + * Since 460800 and 921600 cannot be obtained by dividing 3MHz by an integer, + * it could be somekind of subdivisor thingy. + * However,it does not seem to do anything: selecting 921600 (divisor 3, + * reg E=2), still gets 1 MHz. I also checked if registers 9, C or F would + * work, but they don't. + * + * Register F: unknown + */ diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index ebcc6d0e2e91..f99498fca99a 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -598,6 +598,20 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_USOPTL4_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_USPTL4_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_USO9ML2DR_2_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_USO9ML2DR_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_USOPTL4DR2_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_USOPTL4DR_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_485USB9F_2W_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_485USB9F_4W_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_232USB9M_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_485USBTB_2W_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_485USBTB_4W_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_TTL5USB9M_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_TTL3USB9M_PID) }, + { USB_DEVICE(BANDB_VID, BANDB_ZZ_PROG1_USB_PID) }, { USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) }, { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) }, { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) }, @@ -2195,15 +2209,21 @@ static void ftdi_set_termios(struct tty_struct *tty, /* Set number of data bits, parity, stop bits */ - termios->c_cflag &= ~CMSPAR; - urb_value = 0; urb_value |= (cflag & CSTOPB ? FTDI_SIO_SET_DATA_STOP_BITS_2 : FTDI_SIO_SET_DATA_STOP_BITS_1); - urb_value |= (cflag & PARENB ? - (cflag & PARODD ? FTDI_SIO_SET_DATA_PARITY_ODD : - FTDI_SIO_SET_DATA_PARITY_EVEN) : - FTDI_SIO_SET_DATA_PARITY_NONE); + if (cflag & PARENB) { + if (cflag & CMSPAR) + urb_value |= cflag & PARODD ? + FTDI_SIO_SET_DATA_PARITY_MARK : + FTDI_SIO_SET_DATA_PARITY_SPACE; + else + urb_value |= cflag & PARODD ? + FTDI_SIO_SET_DATA_PARITY_ODD : + FTDI_SIO_SET_DATA_PARITY_EVEN; + } else { + urb_value |= FTDI_SIO_SET_DATA_PARITY_NONE; + } if (cflag & CSIZE) { switch (cflag & CSIZE) { case CS5: urb_value |= 5; dbg("Setting CS5"); break; diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h index 6f31e0d71898..4586a24fafb0 100644 --- a/drivers/usb/serial/ftdi_sio.h +++ b/drivers/usb/serial/ftdi_sio.h @@ -662,6 +662,20 @@ #define BANDB_USOTL4_PID 0xAC01 /* USOTL4 Isolated RS-485 Converter */ #define BANDB_USTL4_PID 0xAC02 /* USTL4 RS-485 Converter */ #define BANDB_USO9ML2_PID 0xAC03 /* USO9ML2 Isolated RS-232 Converter */ +#define BANDB_USOPTL4_PID 0xAC11 +#define BANDB_USPTL4_PID 0xAC12 +#define BANDB_USO9ML2DR_2_PID 0xAC16 +#define BANDB_USO9ML2DR_PID 0xAC17 +#define BANDB_USOPTL4DR2_PID 0xAC18 /* USOPTL4R-2 2-port Isolated RS-232 Converter */ +#define BANDB_USOPTL4DR_PID 0xAC19 +#define BANDB_485USB9F_2W_PID 0xAC25 +#define BANDB_485USB9F_4W_PID 0xAC26 +#define BANDB_232USB9M_PID 0xAC27 +#define BANDB_485USBTB_2W_PID 0xAC33 +#define BANDB_485USBTB_4W_PID 0xAC34 +#define BANDB_TTL5USB9M_PID 0xAC49 +#define BANDB_TTL3USB9M_PID 0xAC50 +#define BANDB_ZZ_PROG1_USB_PID 0xBA02 /* * RM Michaelides CANview USB (http://www.rmcan.com) diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index f11abf52be7d..485fa9c5b107 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -121,8 +121,14 @@ * moschip_id_table_combined */ #define USB_VENDOR_ID_BANDB 0x0856 -#define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 +#define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 +#define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 +#define BANDB_DEVICE_ID_US9ML2_2 0xAC29 +#define BANDB_DEVICE_ID_US9ML2_4 0xAC30 +#define BANDB_DEVICE_ID_USPTL4_2 0xAC31 +#define BANDB_DEVICE_ID_USPTL4_4 0xAC32 #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 +#define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 /* This driver also supports * ATEN UC2324 device using Moschip MCS7840 @@ -177,8 +183,14 @@ static struct usb_device_id moschip_port_id_table[] = { {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, {} /* terminating entry */ @@ -187,8 +199,14 @@ static struct usb_device_id moschip_port_id_table[] = { static __devinitdata struct usb_device_id moschip_id_table_combined[] = { {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, + {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, {} /* terminating entry */ diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 0577e4b61114..9a2b903492ec 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -580,12 +580,48 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0086, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2002, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2003, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0104, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0106, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0108, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0113, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0117, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0118, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0121, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0122, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0123, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0124, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0125, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0126, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0128, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0142, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0143, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0144, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0145, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0146, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0147, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0148, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0149, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0150, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0151, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0152, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0153, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0154, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0155, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0156, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0157, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0158, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0159, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0160, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0161, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0162, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0014, 0xff, 0xff, 0xff) }, /* ZTE CDMA products */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0027, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0059, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0060, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0070, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0073, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0130, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0141, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) }, @@ -599,6 +635,7 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_G450) }, { USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_HSDPA_MINICARD ) }, /* Toshiba 3G HSDPA == Novatel Expedite EU870D MiniCard */ { USB_DEVICE(ALINK_VENDOR_ID, 0x9000) }, + { USB_DEVICE(ALINK_VENDOR_ID, 0xce16) }, { USB_DEVICE_AND_INTERFACE_INFO(ALINK_VENDOR_ID, ALINK_PRODUCT_3GU, 0xff, 0xff, 0xff) }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S) }, { USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) }, @@ -1312,7 +1349,7 @@ static int option_suspend(struct usb_serial *serial, pm_message_t message) dbg("%s entered", __func__); - if (serial->dev->auto_pm) { + if (message.event & PM_EVENT_AUTO) { spin_lock_irq(&intfdata->susp_lock); b = intfdata->in_flight; spin_unlock_irq(&intfdata->susp_lock); diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 5019325ba25d..ac1b6449fb6a 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -16,8 +16,9 @@ Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de> Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> */ - -#define DRIVER_VERSION "v.1.3.8" +/* Uncomment to log function calls */ +/* #define DEBUG */ +#define DRIVER_VERSION "v.1.7.16" #define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer" #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" @@ -33,8 +34,10 @@ #define SWIMS_USB_REQUEST_SetPower 0x00 #define SWIMS_USB_REQUEST_SetNmea 0x07 -#define N_IN_URB 8 -#define N_OUT_URB 64 +#define N_IN_URB_HM 8 +#define N_OUT_URB_HM 64 +#define N_IN_URB 4 +#define N_OUT_URB 4 #define IN_BUFLEN 4096 #define MAX_TRANSFER (PAGE_SIZE - 512) @@ -124,6 +127,23 @@ static int is_blacklisted(const u8 ifnum, return 0; } +static int is_himemory(const u8 ifnum, + const struct sierra_iface_info *himemorylist) +{ + const u8 *info; + int i; + + if (himemorylist) { + info = himemorylist->ifaceinfo; + + for (i=0; i < himemorylist->infolen; i++) { + if (info[i] == ifnum) + return 1; + } + } + return 0; +} + static int sierra_calc_interface(struct usb_serial *serial) { int interface; @@ -186,6 +206,20 @@ static int sierra_probe(struct usb_serial *serial, return result; } +/* interfaces with higher memory requirements */ +static const u8 hi_memory_typeA_ifaces[] = { 0, 2 }; +static const struct sierra_iface_info typeA_interface_list = { + .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces), + .ifaceinfo = hi_memory_typeA_ifaces, +}; + +static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 }; +static const struct sierra_iface_info typeB_interface_list = { + .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces), + .ifaceinfo = hi_memory_typeB_ifaces, +}; + +/* 'blacklist' of interfaces not served by this driver */ static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 }; static const struct sierra_iface_info direct_ip_interface_blacklist = { .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces), @@ -286,8 +320,10 @@ struct sierra_port_private { struct usb_anchor active; struct usb_anchor delayed; + int num_out_urbs; + int num_in_urbs; /* Input endpoints and buffers for this port */ - struct urb *in_urbs[N_IN_URB]; + struct urb *in_urbs[N_IN_URB_HM]; /* Settings for the port */ int rts_state; /* Handshaking pins (outputs) */ @@ -460,7 +496,7 @@ static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, spin_lock_irqsave(&portdata->lock, flags); dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__, portdata->outstanding_urbs); - if (portdata->outstanding_urbs > N_OUT_URB) { + if (portdata->outstanding_urbs > portdata->num_out_urbs) { spin_unlock_irqrestore(&portdata->lock, flags); dev_dbg(&port->dev, "%s - write limit hit\n", __func__); return 0; @@ -665,7 +701,7 @@ static int sierra_write_room(struct tty_struct *tty) /* try to give a good number back based on if we have any free urbs at * this point in time */ spin_lock_irqsave(&portdata->lock, flags); - if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { + if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) { spin_unlock_irqrestore(&portdata->lock, flags); dev_dbg(&port->dev, "%s - write limit hit\n", __func__); return 0; @@ -680,7 +716,7 @@ static void sierra_stop_rx_urbs(struct usb_serial_port *port) int i; struct sierra_port_private *portdata = usb_get_serial_port_data(port); - for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) + for (i = 0; i < portdata->num_in_urbs; i++) usb_kill_urb(portdata->in_urbs[i]); usb_kill_urb(port->interrupt_in_urb); @@ -695,7 +731,7 @@ static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags) struct sierra_port_private *portdata = usb_get_serial_port_data(port); ok_cnt = 0; - for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { + for (i = 0; i < portdata->num_in_urbs; i++) { urb = portdata->in_urbs[i]; if (!urb) continue; @@ -791,7 +827,7 @@ static void sierra_close(struct usb_serial_port *port) /* Stop reading urbs */ sierra_stop_rx_urbs(port); /* .. and release them */ - for (i = 0; i < N_IN_URB; i++) { + for (i = 0; i < portdata->num_in_urbs; i++) { sierra_release_urb(portdata->in_urbs[i]); portdata->in_urbs[i] = NULL; } @@ -818,7 +854,7 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port) endpoint = port->bulk_in_endpointAddress; - for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { + for (i = 0; i < portdata->num_in_urbs; i++) { urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port, IN_BUFLEN, GFP_KERNEL, sierra_indat_callback); @@ -869,7 +905,9 @@ static int sierra_startup(struct usb_serial *serial) { struct usb_serial_port *port; struct sierra_port_private *portdata; + struct sierra_iface_info *himemoryp = NULL; int i; + u8 ifnum; dev_dbg(&serial->dev->dev, "%s\n", __func__); @@ -886,13 +924,40 @@ static int sierra_startup(struct usb_serial *serial) portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); if (!portdata) { dev_dbg(&port->dev, "%s: kmalloc for " - "sierra_port_private (%d) failed!.\n", + "sierra_port_private (%d) failed!\n", __func__, i); return -ENOMEM; } spin_lock_init(&portdata->lock); init_usb_anchor(&portdata->active); init_usb_anchor(&portdata->delayed); + ifnum = i; + /* Assume low memory requirements */ + portdata->num_out_urbs = N_OUT_URB; + portdata->num_in_urbs = N_IN_URB; + + /* Determine actual memory requirements */ + if (serial->num_ports == 1) { + /* Get interface number for composite device */ + ifnum = sierra_calc_interface(serial); + himemoryp = + (struct sierra_iface_info *)&typeB_interface_list; + if (is_himemory(ifnum, himemoryp)) { + portdata->num_out_urbs = N_OUT_URB_HM; + portdata->num_in_urbs = N_IN_URB_HM; + } + } + else { + himemoryp = + (struct sierra_iface_info *)&typeA_interface_list; + if (is_himemory(i, himemoryp)) { + portdata->num_out_urbs = N_OUT_URB_HM; + portdata->num_in_urbs = N_IN_URB_HM; + } + } + dev_dbg(&serial->dev->dev, + "Memory usage (urbs) interface #%d, in=%d, out=%d\n", + ifnum,portdata->num_in_urbs, portdata->num_out_urbs ); /* Set the port private data pointer */ usb_set_serial_port_data(port, portdata); } @@ -940,7 +1005,7 @@ static int sierra_suspend(struct usb_serial *serial, pm_message_t message) struct sierra_intf_private *intfdata; int b; - if (serial->dev->auto_pm) { + if (message.event & PM_EVENT_AUTO) { intfdata = serial->private; spin_lock_irq(&intfdata->susp_lock); b = intfdata->in_flight; diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index cfa26d56ce60..e5e6df39e737 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -73,7 +73,8 @@ static const char* host_info(struct Scsi_Host *host) { - return "SCSI emulation for USB Mass Storage devices"; + struct us_data *us = host_to_us(host); + return us->scsi_name; } static int slave_alloc (struct scsi_device *sdev) diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index 589f6b4404f0..cc313d16d727 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -666,10 +666,11 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) * to wait for at least one CHECK_CONDITION to determine * SANE_SENSE support */ - if ((srb->cmnd[0] == ATA_16 || srb->cmnd[0] == ATA_12) && + if (unlikely((srb->cmnd[0] == ATA_16 || srb->cmnd[0] == ATA_12) && result == USB_STOR_TRANSPORT_GOOD && !(us->fflags & US_FL_SANE_SENSE) && - !(srb->cmnd[2] & 0x20)) { + !(us->fflags & US_FL_BAD_SENSE) && + !(srb->cmnd[2] & 0x20))) { US_DEBUGP("-- SAT supported, increasing auto-sense\n"); us->fflags |= US_FL_SANE_SENSE; } @@ -718,6 +719,12 @@ Retry_Sense: if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { US_DEBUGP("-- auto-sense aborted\n"); srb->result = DID_ABORT << 16; + + /* If SANE_SENSE caused this problem, disable it */ + if (sense_size != US_SENSE_SIZE) { + us->fflags &= ~US_FL_SANE_SENSE; + us->fflags |= US_FL_BAD_SENSE; + } goto Handle_Errors; } @@ -727,10 +734,11 @@ Retry_Sense: * (small) sense request. This fixes some USB GSM modems */ if (temp_result == USB_STOR_TRANSPORT_FAILED && - (us->fflags & US_FL_SANE_SENSE) && - sense_size != US_SENSE_SIZE) { + sense_size != US_SENSE_SIZE) { US_DEBUGP("-- auto-sense failure, retry small sense\n"); sense_size = US_SENSE_SIZE; + us->fflags &= ~US_FL_SANE_SENSE; + us->fflags |= US_FL_BAD_SENSE; goto Retry_Sense; } @@ -754,6 +762,7 @@ Retry_Sense: */ if (srb->sense_buffer[7] > (US_SENSE_SIZE - 8) && !(us->fflags & US_FL_SANE_SENSE) && + !(us->fflags & US_FL_BAD_SENSE) && (srb->sense_buffer[0] & 0x7C) == 0x70) { US_DEBUGP("-- SANE_SENSE support enabled\n"); us->fflags |= US_FL_SANE_SENSE; diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index d4f034ebaa8a..64a0a2c27e12 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -818,6 +818,13 @@ UNUSUAL_DEV( 0x066f, 0x8000, 0x0001, 0x0001, US_SC_DEVICE, US_PR_DEVICE, NULL, US_FL_FIX_CAPACITY ), +/* Reported by Daniel Kukula <daniel.kuku@gmail.com> */ +UNUSUAL_DEV( 0x067b, 0x1063, 0x0100, 0x0100, + "Prolific Technology, Inc.", + "Prolific Storage Gadget", + US_SC_DEVICE, US_PR_DEVICE, NULL, + US_FL_BAD_SENSE ), + /* Reported by Rogerio Brito <rbrito@ime.usp.br> */ UNUSUAL_DEV( 0x067b, 0x2317, 0x0001, 0x001, "Prolific Technology, Inc.", diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 8060b85fe1a3..5a53d4f0dd11 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -45,6 +45,10 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ +#ifdef CONFIG_USB_STORAGE_DEBUG +#define DEBUG +#endif + #include <linux/sched.h> #include <linux/errno.h> #include <linux/freezer.h> @@ -228,6 +232,7 @@ void fill_inquiry_response(struct us_data *us, unsigned char *data, if (data_len<36) // You lose. return; + memset(data+8, ' ', 28); if(data[0]&0x20) { /* USB device currently not connected. Return peripheral qualifier 001b ("...however, the physical device is not currently connected @@ -237,15 +242,15 @@ void fill_inquiry_response(struct us_data *us, unsigned char *data, device, it may return zeros or ASCII spaces (20h) in those fields until the data is available from the device."). */ - memset(data+8,0,28); } else { u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); - memcpy(data+8, us->unusual_dev->vendorName, - strlen(us->unusual_dev->vendorName) > 8 ? 8 : - strlen(us->unusual_dev->vendorName)); - memcpy(data+16, us->unusual_dev->productName, - strlen(us->unusual_dev->productName) > 16 ? 16 : - strlen(us->unusual_dev->productName)); + int n; + + n = strlen(us->unusual_dev->vendorName); + memcpy(data+8, us->unusual_dev->vendorName, min(8, n)); + n = strlen(us->unusual_dev->productName); + memcpy(data+16, us->unusual_dev->productName, min(16, n)); + data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); @@ -459,6 +464,9 @@ static void adjust_quirks(struct us_data *us) case 'a': f |= US_FL_SANE_SENSE; break; + case 'b': + f |= US_FL_BAD_SENSE; + break; case 'c': f |= US_FL_FIX_CAPACITY; break; @@ -808,14 +816,13 @@ static int usb_stor_scan_thread(void * __us) { struct us_data *us = (struct us_data *)__us; - printk(KERN_DEBUG - "usb-storage: device found at %d\n", us->pusb_dev->devnum); + dev_dbg(&us->pusb_intf->dev, "device found\n"); set_freezable(); /* Wait for the timeout to expire or for a disconnect */ if (delay_use > 0) { - printk(KERN_DEBUG "usb-storage: waiting for device " - "to settle before scanning\n"); + dev_dbg(&us->pusb_intf->dev, "waiting for device to settle " + "before scanning\n"); wait_event_freezable_timeout(us->delay_wait, test_bit(US_FLIDX_DONT_SCAN, &us->dflags), delay_use * HZ); @@ -832,7 +839,7 @@ static int usb_stor_scan_thread(void * __us) mutex_unlock(&us->dev_mutex); } scsi_scan_host(us_to_host(us)); - printk(KERN_DEBUG "usb-storage: device scan complete\n"); + dev_dbg(&us->pusb_intf->dev, "scan complete\n"); /* Should we unbind if no devices were detected? */ } @@ -840,6 +847,15 @@ static int usb_stor_scan_thread(void * __us) complete_and_exit(&us->scanning_done, 0); } +static unsigned int usb_stor_sg_tablesize(struct usb_interface *intf) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + + if (usb_dev->bus->sg_tablesize) { + return usb_dev->bus->sg_tablesize; + } + return SG_ALL; +} /* First part of general USB mass-storage probing */ int usb_stor_probe1(struct us_data **pus, @@ -868,6 +884,7 @@ int usb_stor_probe1(struct us_data **pus, * Allow 16-byte CDBs and thus > 2TB */ host->max_cmd_len = 16; + host->sg_tablesize = usb_stor_sg_tablesize(intf); *pus = us = host_to_us(host); memset(us, 0, sizeof(struct us_data)); mutex_init(&(us->dev_mutex)); @@ -929,6 +946,8 @@ int usb_stor_probe2(struct us_data *us) result = usb_stor_acquire_resources(us); if (result) goto BadDevice; + snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", + dev_name(&us->pusb_intf->dev)); result = scsi_add_host(us_to_host(us), &us->pusb_intf->dev); if (result) { printk(KERN_WARNING USB_STORAGE diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h index 2609efb2bd7e..69717134231b 100644 --- a/drivers/usb/storage/usb.h +++ b/drivers/usb/storage/usb.h @@ -132,6 +132,7 @@ struct us_data { /* SCSI interfaces */ struct scsi_cmnd *srb; /* current srb */ unsigned int tag; /* current dCBWTag */ + char scsi_name[32]; /* scsi_host name */ /* control and bulk communications data */ struct urb *current_urb; /* USB requests */ diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index b62f2bc064f6..b1e579c5c97c 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -358,7 +358,7 @@ retry: rv = skel_do_read_io(dev, count); if (rv < 0) goto exit; - else if (!file->f_flags & O_NONBLOCK) + else if (!(file->f_flags & O_NONBLOCK)) goto retry; rv = -EAGAIN; } @@ -411,7 +411,7 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, * limit the number of URBs in flight to stop a user from using up all * RAM */ - if (!file->f_flags & O_NONBLOCK) { + if (!(file->f_flags & O_NONBLOCK)) { if (down_interruptible(&dev->limit_sem)) { retval = -ERESTARTSYS; goto exit; diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index 4ac4300a3f9a..dced419f7aba 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -119,10 +119,12 @@ static struct wusb_dev *wusb_dev_alloc(struct wusbhc *wusbhc) urb = usb_alloc_urb(0, GFP_KERNEL); if (urb == NULL) goto err; + wusb_dev->set_gtk_urb = urb; - req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + req = kmalloc(sizeof(*req), GFP_KERNEL); if (req == NULL) goto err; + wusb_dev->set_gtk_req = req; req->bRequestType = USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE; req->bRequest = USB_REQ_SET_DESCRIPTOR; @@ -130,9 +132,6 @@ static struct wusb_dev *wusb_dev_alloc(struct wusbhc *wusbhc) req->wIndex = 0; req->wLength = cpu_to_le16(wusbhc->gtk.descr.bLength); - wusb_dev->set_gtk_urb = urb; - wusb_dev->set_gtk_req = req; - return wusb_dev; err: wusb_dev_free(wusb_dev); diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c index 4516c36436e6..edcd2d756037 100644 --- a/drivers/usb/wusbcore/security.c +++ b/drivers/usb/wusbcore/security.c @@ -205,15 +205,15 @@ int wusb_dev_sec_add(struct wusbhc *wusbhc, const void *itr, *top; char buf[64]; - secd = kmalloc(sizeof(struct usb_security_descriptor), GFP_KERNEL); + secd = kmalloc(sizeof(*secd), GFP_KERNEL); if (secd == NULL) { result = -ENOMEM; goto out; } result = usb_get_descriptor(usb_dev, USB_DT_SECURITY, - 0, secd, sizeof(struct usb_security_descriptor)); - if (result < sizeof(secd)) { + 0, secd, sizeof(*secd)); + if (result < sizeof(*secd)) { dev_err(dev, "Can't read security descriptor or " "not enough data: %d\n", result); goto out; diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c index ee6256f23636..eab86e4bc770 100644 --- a/drivers/usb/wusbcore/wusbhc.c +++ b/drivers/usb/wusbcore/wusbhc.c @@ -147,10 +147,40 @@ static ssize_t wusb_chid_store(struct device *dev, } static DEVICE_ATTR(wusb_chid, 0644, wusb_chid_show, wusb_chid_store); + +static ssize_t wusb_phy_rate_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + + return sprintf(buf, "%d\n", wusbhc->phy_rate); +} + +static ssize_t wusb_phy_rate_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev); + uint8_t phy_rate; + ssize_t result; + + result = sscanf(buf, "%hhu", &phy_rate); + if (result != 1) + return -EINVAL; + if (phy_rate >= UWB_PHY_RATE_INVALID) + return -EINVAL; + + wusbhc->phy_rate = phy_rate; + return size; +} +static DEVICE_ATTR(wusb_phy_rate, 0644, wusb_phy_rate_show, wusb_phy_rate_store); + /* Group all the WUSBHC attributes */ static struct attribute *wusbhc_attrs[] = { &dev_attr_wusb_trust_timeout.attr, &dev_attr_wusb_chid.attr, + &dev_attr_wusb_phy_rate.attr, NULL, }; @@ -177,6 +207,8 @@ int wusbhc_create(struct wusbhc *wusbhc) int result = 0; wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS; + wusbhc->phy_rate = UWB_PHY_RATE_INVALID - 1; + mutex_init(&wusbhc->mutex); result = wusbhc_mmcie_create(wusbhc); if (result < 0) diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h index 797c2453a35b..fd2fd4e277e1 100644 --- a/drivers/usb/wusbcore/wusbhc.h +++ b/drivers/usb/wusbcore/wusbhc.h @@ -253,6 +253,7 @@ struct wusbhc { unsigned trust_timeout; /* in jiffies */ struct wusb_ckhdid chid; + uint8_t phy_rate; struct wuie_host_info *wuie_host_info; struct mutex mutex; /* locks everything else */ |