/* * Host Wire Adapter: * Driver glue, HWA-specific functions, bridges to WAHC and WUSBHC * * Copyright (C) 2005-2006 Intel Corporation * Inaky Perez-Gonzalez * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * 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., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. * * * The HWA driver is a simple layer that forwards requests to the WAHC * (Wire Adater Host Controller) or WUSBHC (Wireless USB Host * Controller) layers. * * Host Wire Adapter is the 'WUSB 1.0 standard' name for Wireless-USB * Host Controller that is connected to your system via USB (a USB * dongle that implements a USB host...). There is also a Device Wired * Adaptor, DWA (Wireless USB hub) that uses the same mechanism for * transferring data (it is after all a USB host connected via * Wireless USB), we have a common layer called Wire Adapter Host * Controller that does all the hard work. The WUSBHC (Wireless USB * Host Controller) is the part common to WUSB Host Controllers, the * HWA and the PCI-based one, that is implemented following the WHCI * spec. All these layers are implemented in ../wusbcore. * * The main functions are hwahc_op_urb_{en,de}queue(), that pass the * job of converting a URB to a Wire Adapter * * Entry points: * * hwahc_driver_*() Driver initialization, registration and * teardown. * * hwahc_probe() New device came up, create an instance for * it [from device enumeration]. * * hwahc_disconnect() Remove device instance [from device * enumeration]. * * [__]hwahc_op_*() Host-Wire-Adaptor specific functions for * starting/stopping/etc (some might be made also * DWA). */ #include #include #include #include #include #include #include "../wusbcore/wa-hc.h" #include "../wusbcore/wusbhc.h" #define D_LOCAL 0 #include struct hwahc { struct wusbhc wusbhc; /* has to be 1st */ struct wahc wa; u8 buffer[16]; /* for misc usb transactions */ }; /** * FIXME should be wusbhc * * NOTE: we need to cache the Cluster ID because later...there is no * way to get it :) */ static int __hwahc_set_cluster_id(struct hwahc *hwahc, u8 cluster_id) { int result; struct wusbhc *wusbhc = &hwahc->wusbhc; struct wahc *wa = &hwahc->wa; struct device *dev = &wa->usb_iface->dev; result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_SET_CLUSTER_ID, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, cluster_id, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber, NULL, 0, 1000 /* FIXME: arbitrary */); if (result < 0) dev_err(dev, "Cannot set WUSB Cluster ID to 0x%02x: %d\n", cluster_id, result); else wusbhc->cluster_id = cluster_id; dev_info(dev, "Wireless USB Cluster ID set to 0x%02x\n", cluster_id); return result; } static int __hwahc_op_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots) { struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_SET_NUM_DNTS, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, interval << 8 | slots, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber, NULL, 0, 1000 /* FIXME: arbitrary */); } /* * Reset a WUSB host controller and wait for it to complete doing it. * * @usb_hcd: Pointer to WUSB Host Controller instance. * */ static int hwahc_op_reset(struct usb_hcd *usb_hcd) { int result; struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct device *dev = &hwahc->wa.usb_iface->dev; d_fnstart(4, dev, "(hwahc %p)\n", hwahc); mutex_lock(&wusbhc->mutex); wa_nep_disarm(&hwahc->wa); result = __wa_set_feature(&hwahc->wa, WA_RESET); if (result < 0) { dev_err(dev, "error commanding HC to reset: %d\n", result); goto error_unlock; } d_printf(3, dev, "reset: waiting for device to change state\n"); result = __wa_wait_status(&hwahc->wa, WA_STATUS_RESETTING, 0); if (result < 0) { dev_err(dev, "error waiting for HC to reset: %d\n", result); goto error_unlock; } error_unlock: mutex_unlock(&wusbhc->mutex); d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); return result; } /* * FIXME: break this function up */ static int hwahc_op_start(struct usb_hcd *usb_hcd) { u8 addr; int result; struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct device *dev = &hwahc->wa.usb_iface->dev; /* Set up a Host Info WUSB Information Element */ d_fnstart(4, dev, "(hwahc %p)\n", hwahc); result = -ENOSPC; mutex_lock(&wusbhc->mutex); /* Start the numbering from the top so that the bottom * range of the unauth addr space is used for devices, * the top for HCs; use 0xfe - RC# */ addr = wusb_cluster_id_get(); if (addr == 0) goto error_cluster_id_get; result = __hwahc_set_cluster_id(hwahc, addr); if (result < 0) goto error_set_cluster_id; usb_hcd->uses_new_polling = 1; usb_hcd->poll_rh = 1; usb_hcd->state = HC_STATE_RUNNING; result = 0; out: mutex_unlock(&wusbhc->mutex); d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); return result; error_set_cluster_id: wusb_cluster_id_put(wusbhc->cluster_id); error_cluster_id_get: goto out; } static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); dev_err(wusbhc->dev, "%s (%p [%p], 0x%lx) UNIMPLEMENTED\n", __func__, usb_hcd, hwahc, *(unsigned long *) &msg); return -ENOSYS; } static int hwahc_op_resume(struct usb_hcd *usb_hcd) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__, usb_hcd, hwahc); return -ENOSYS; } /* * No need to abort pipes, as when this is called, all the children * has been disconnected and that has done it [through * usb_disable_interface() -> usb_disable_endpoint() -> * hwahc_op_ep_disable() - >rpipe_ep_disable()]. */ static void hwahc_op_stop(struct usb_hcd *usb_hcd) { int result; struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; struct device *dev = &wa->usb_iface->dev; d_fnstart(4, dev, "(hwahc %p)\n", hwahc); mutex_lock(&wusbhc->mutex); wusb_cluster_id_put(wusbhc->cluster_id); mutex_unlock(&wusbhc->mutex); d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); return; } static int hwahc_op_get_frame_number(struct usb_hcd *usb_hcd) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__, usb_hcd, hwahc); return -ENOSYS; } static int hwahc_op_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb, gfp_t gfp) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); return wa_urb_enqueue(&hwahc->wa, urb->ep, urb, gfp); } static int hwahc_op_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb, int status) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); return wa_urb_dequeue(&hwahc->wa, urb); } /* * Release resources allocated for an endpoint * * If there is an associated rpipe to this endpoint, go ahead and put it. */ static void hwahc_op_endpoint_disable(struct usb_hcd *usb_hcd, struct usb_host_endpoint *ep) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); rpipe_ep_disable(&hwahc->wa, ep); } static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc) { int result; struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct device *dev = &hwahc->wa.usb_iface->dev; result = __wa_set_feature(&hwahc->wa, WA_ENABLE); if (result < 0) { dev_err(dev, "error commanding HC to start: %d\n", result); goto error_stop; } result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE); if (result < 0) { dev_err(dev, "error waiting for HC to start: %d\n", result); goto error_stop; } result = wa_nep_arm(&hwahc->wa, GFP_KERNEL); if (result < 0) { dev_err(dev, "cannot listen to notifications: %d\n", result); goto error_stop; } return result; error_stop: __wa_clear_feature(&hwahc->wa, WA_ENABLE); return result; } static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc, int delay) { struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; int ret; ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_CHAN_STOP, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, delay * 1000, iface_no, NULL, 0, 1000 /* FIXME: arbitrary */); if (ret == 0) msleep(delay); wa_nep_disarm(&hwahc->wa); __wa_stop(&hwahc->wa); } /* * Set the UWB MAS allocation for the WUSB cluster * * @stream_index: stream to use (-1 for cancelling the allocation) * @mas: mas bitmap to use */ static int __hwahc_op_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas) { int result; struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; struct device *dev = &wa->usb_iface->dev; u8 mas_le[UWB_NUM_MAS/8]; /* Set the stream index */ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_SET_STREAM_IDX, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, stream_index, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber, NULL, 0, 1000 /* FIXME: arbitrary */); if (result < 0) { dev_err(dev, "Cannot set WUSB stream index: %d\n", result); goto out; } uwb_mas_bm_copy_le(mas_le, mas); /* Set the MAS allocation */ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_SET_WUSB_MAS, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber, mas_le, 32, 1000 /* FIXME: arbitrary */); if (result < 0) dev_err(dev, "Cannot set WUSB MAS allocation: %d\n", result); out: return result; } /* * Add an IE to the host's MMC * * @interval: See WUSB1.0[8.5.3.1] * @repeat_cnt: See WUSB1.0[8.5.3.1] * @handle: See WUSB1.0[8.5.3.1] * @wuie: Pointer to the header of the WUSB IE data to add. * MUST BE allocated in a kmalloc buffer (no stack or * vmalloc). * * NOTE: the format of the WUSB IEs for MMCs are different to the * normal MBOA MAC IEs (IE Id + Length in MBOA MAC vs. Length + * Id in WUSB IEs). Standards...you gotta love'em. */ static int __hwahc_op_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt, u8 handle, struct wuie_hdr *wuie) { struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_ADD_MMC_IE, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, interval << 8 | repeat_cnt, handle << 8 | iface_no, wuie, wuie->bLength, 1000 /* FIXME: arbitrary */); } /* * Remove an IE to the host's MMC * * @handle: See WUSB1.0[8.5.3.1] */ static int __hwahc_op_mmcie_rm(struct wusbhc *wusbhc, u8 handle) { struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_REMOVE_MMC_IE, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, handle << 8 | iface_no, NULL, 0, 1000 /* FIXME: arbitrary */); } /* * Update device information for a given fake port * * @port_idx: Fake port to which device is connected (wusbhc index, not * USB port number). */ static int __hwahc_op_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev) { struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; struct hwa_dev_info *dev_info; int ret; /* fill out the Device Info buffer and send it */ dev_info = kzalloc(sizeof(struct hwa_dev_info), GFP_KERNEL); if (!dev_info) return -ENOMEM; uwb_mas_bm_copy_le(dev_info->bmDeviceAvailability, &wusb_dev->availability); dev_info->bDeviceAddress = wusb_dev->addr; /* * If the descriptors haven't been read yet, use a default PHY * rate of 53.3 Mbit/s only. The correct value will be used * when this will be called again as part of the * authentication process (which occurs after the descriptors * have been read). */ if (wusb_dev->wusb_cap_descr) dev_info->wPHYRates = wusb_dev->wusb_cap_descr->wPHYRates; else dev_info->wPHYRates = cpu_to_le16(USB_WIRELESS_PHY_53); ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), WUSB_REQ_SET_DEV_INFO, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, wusb_dev->port_idx << 8 | iface_no, dev_info, sizeof(struct hwa_dev_info), 1000 /* FIXME: arbitrary */); kfree(dev_info); return ret; } /* * Set host's idea of which encryption (and key) method to use when * talking to ad evice on a given port. * * If key is NULL, it means disable encryption for that "virtual port" * (used when we disconnect). */ static int __hwahc_dev_set_key(struct wusbhc *wusbhc, u8 port_idx, u32 tkid, const void *key, size_t key_size, u8 key_idx) { int result = -ENOMEM; struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; struct usb_key_descriptor *keyd; size_t keyd_len; keyd_len = sizeof(*keyd) + key_size; keyd = kzalloc(keyd_len, GFP_KERNEL); if (keyd == NULL) return -ENOMEM; keyd->bLength = keyd_len; keyd->bDescriptorType = USB_DT_KEY; keyd->tTKID[0] = (tkid >> 0) & 0xff; keyd->tTKID[1] = (tkid >> 8) & 0xff; keyd->tTKID[2] = (tkid >> 16) & 0xff; memcpy(keyd->bKeyData, key, key_size); result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), USB_REQ_SET_DESCRIPTOR, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, USB_DT_KEY << 8 | key_idx, port_idx << 8 | iface_no, keyd, keyd_len, 1000 /* FIXME: arbitrary */); memset(keyd, 0, sizeof(*keyd)); /* clear keys etc. */ kfree(keyd); return result; } /* * Set host's idea of which encryption (and key) method to use when * talking to ad evice on a given port. * * If key is NULL, it means disable encryption for that "virtual port" * (used when we disconnect). */ static int __hwahc_op_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid, const void *key, size_t key_size) { int result = -ENOMEM; struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); struct wahc *wa = &hwahc->wa; u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; u8 encryption_value; /* Tell the host which key to use to talk to the device */ if (key) { u8 key_idx = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_PTK, WUSB_KEY_INDEX_ORIGINATOR_HOST); result = __hwahc_dev_set_key(wusbhc, port_idx, tkid, key, key_size, key_idx); if (result < 0) goto error_set_key; encryption_value = wusbhc->ccm1_etd->bEncryptionValue; } else { /* FIXME: this should come from wusbhc->etd[UNSECURE].value */ encryption_value = 0; } /* Set the encryption type for commmunicating with the device */ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), USB_REQ_SET_ENCRYPTION, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, encryption_value, port_idx << 8 | iface_no, NULL, 0, 1000 /* FIXME: arbitrary */); if (result < 0) dev_err(wusbhc->dev, "Can't set host's WUSB encryption for " "port index %u to %s (value %d): %d\n", port_idx, wusb_et_name(wusbhc->ccm1_etd->bEncryptionType), wusbhc->ccm1_etd->bEncryptionValue, result); error_set_key: return result; } /* * Set host's GTK key */ static int __hwahc_op_set_gtk(struct wusbhc *wusbhc, u32 tkid, const void *key, size_t key_size) { u8 key_idx = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_GTK, WUSB_KEY_INDEX_ORIGINATOR_HOST); return __hwahc_dev_set_key(wusbhc, 0, tkid, key, key_size, key_idx); } /* * Get the Wire Adapter class-specific descriptor * * NOTE: this descriptor comes with the big bundled configuration * descriptor that includes the interfaces' and endpoints', so * we just look for it in the cached copy kept by the USB stack. * * NOTE2: We convert LE fields to CPU order. */ static int wa_fill_descr(struct wahc *wa) { int result; struct device *dev = &wa->usb_iface->dev; char *itr; struct usb_device *usb_dev = wa->usb_dev; struct usb_descriptor_header *hdr; struct usb_wa_descriptor *wa_descr; size_t itr_size, actconfig_idx; actconfig_idx = (usb_dev->actconfig - usb_dev->config) / sizeof(usb_dev->config[0]); itr = usb_dev->rawdescriptors[actconfig_idx]; itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength); while (itr_size >= sizeof(*hdr)) { hdr = (struct usb_descriptor_header *) itr; d_printf(3, dev, "Extra device descriptor: " "type %02x/%u bytes @ %zu (%zu left)\n", hdr->bDescriptorType, hdr->bLength, (itr - usb_dev->rawdescriptors[actconfig_idx]), itr_size); if (hdr->bDescriptorType == USB_DT_WIRE_ADAPTER) goto found; itr += hdr->bLength; itr_size -= hdr->bLength; } dev_err(dev, "cannot find Wire Adapter Class descriptor\n"); return -ENODEV; found: result = -EINVAL; if (hdr->bLength > itr_size) { /* is it available? */ dev_err(dev, "incomplete Wire Adapter Class descriptor " "(%zu bytes left, %u needed)\n", itr_size, hdr->bLength); goto error; } if (hdr->bLength < sizeof(*wa->wa_descr)) { dev_err(dev, "short Wire Adapter Class descriptor\n"); goto error; } wa->wa_descr = wa_descr = (struct usb_wa_descriptor *) hdr; /* Make LE fields CPU order */ wa_descr->bcdWAVersion = le16_to_cpu(wa_descr->bcdWAVersion); wa_descr->wNumRPipes = le16_to_cpu(wa_descr->wNumRPipes); wa_descr->wRPipeMaxBlock = le16_to_cpu(wa_descr->wRPipeMaxBlock); if (wa_descr->bcdWAVersion > 0x0100) dev_warn(dev, "Wire Adapter v%d.%d newer than groked v1.0\n", wa_descr->bcdWAVersion & 0xff00 >> 8, wa_descr->bcdWAVersion & 0x00ff); result = 0; error: return result; } static struct hc_driver hwahc_hc_driver = { .description = "hwa-hcd", .product_desc = "Wireless USB HWA host controller", .hcd_priv_size = sizeof(struct hwahc) - sizeof(struct usb_hcd), .irq = NULL, /* FIXME */ .flags = HCD_USB2, /* FIXME */ .reset = hwahc_op_reset, .start = hwahc_op_start, .pci_suspend = hwahc_op_suspend, .pci_resume = hwahc_op_resume, .stop = hwahc_op_stop, .get_frame_number = hwahc_op_get_frame_number, .urb_enqueue = hwahc_op_urb_enqueue, .urb_dequeue = hwahc_op_urb_dequeue, .endpoint_disable = hwahc_op_endpoint_disable, .hub_status_data = wusbhc_rh_status_data, .hub_control = wusbhc_rh_control, .bus_suspend = wusbhc_rh_suspend, .bus_resume = wusbhc_rh_resume, .start_port_reset = wusbhc_rh_start_port_reset, }; static int hwahc_security_create(struct hwahc *hwahc) { int result; struct wusbhc *wusbhc = &hwahc->wusbhc; struct usb_device *usb_dev = hwahc->wa.usb_dev; struct device *dev = &usb_dev->dev; struct usb_security_descriptor *secd; struct usb_encryption_descriptor *etd; void *itr, *top; size_t itr_size, needed, bytes; u8 index; char buf[64]; /* Find the host's security descriptors in the config descr bundle */ index = (usb_dev->actconfig - usb_dev->config) / sizeof(usb_dev->config[0]); itr = usb_dev->rawdescriptors[index]; itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength); top = itr + itr_size; result = __usb_get_extra_descriptor(usb_dev->rawdescriptors[index], le16_to_cpu(usb_dev->actconfig->desc.wTotalLength), USB_DT_SECURITY, (void **) &secd); if (result == -1) { dev_warn(dev, "BUG? WUSB host has no security descriptors\n"); return 0; } needed = sizeof(*secd); if (top - (void *)secd < needed) { dev_err(dev, "BUG? Not enough data to process security " "descriptor header (%zu bytes left vs %zu needed)\n", top - (void *) secd, needed); return 0; } needed = le16_to_cpu(secd->wTotalLength); if (top - (void *)secd < needed) { dev_err(dev, "BUG? Not enough data to process security " "descriptors (%zu bytes left vs %zu needed)\n", top - (void *) secd, needed); return 0; } /* Walk over the sec descriptors and store CCM1's on wusbhc */ itr = (void *) secd + sizeof(*secd); top = (void *) secd + le16_to_cpu(secd->wTotalLength); index = 0; bytes = 0; while (itr < top) { etd = itr; if (top - itr < sizeof(*etd)) { dev_err(dev, "BUG: bad host security descriptor; " "not enough data (%zu vs %zu left)\n", top - itr, sizeof(*etd)); break; } if (etd->bLength < sizeof(*etd)) { dev_err(dev, "BUG: bad host encryption descriptor; " "descriptor is too short " "(%zu vs %zu needed)\n", (size_t)etd->bLength, sizeof(*etd)); break; } itr += etd->bLength; bytes += snprintf(buf + bytes, sizeof(buf) - bytes, "%s (0x%02x) ", wusb_et_name(etd->bEncryptionType), etd->bEncryptionValue); wusbhc->ccm1_etd = etd; } dev_info(dev, "supported encryption types: %s\n", buf); if (wusbhc->ccm1_etd == NULL) { dev_err(dev, "E: host doesn't support CCM-1 crypto\n"); return 0; } /* Pretty print what we support */ return 0; } static void hwahc_security_release(struct hwahc *hwahc) { /* nothing to do here so far... */ } static int hwahc_create(struct hwahc *hwahc, struct usb_interface *iface) { int result; struct device *dev = &iface->dev; struct wusbhc *wusbhc = &hwahc->wusbhc; struct wahc *wa = &hwahc->wa; struct usb_device *usb_dev = interface_to_usbdev(iface); wa->usb_dev = usb_get_dev(usb_dev); /* bind the USB device */ wa->usb_iface = usb_get_intf(iface); wusbhc->dev = dev; wusbhc->uwb_rc = uwb_rc_get_by_grandpa(iface->dev.parent); if (wusbhc->uwb_rc == NULL) { result = -ENODEV; dev_err(dev, "Cannot get associated UWB Host Controller\n"); goto error_rc_get; } result = wa_fill_descr(wa); /* Get the device descriptor */ if (result < 0) goto error_fill_descriptor; if (wa->wa_descr->bNumPorts > USB_MAXCHILDREN) { dev_err(dev, "FIXME: USB_MAXCHILDREN too low for WUSB " "adapter (%u ports)\n", wa->wa_descr->bNumPorts); wusbhc->ports_max = USB_MAXCHILDREN; } else { wusbhc->ports_max = wa->wa_descr->bNumPorts; } wusbhc->mmcies_max = wa->wa_descr->bNumMMCIEs; wusbhc->start = __hwahc_op_wusbhc_start; wusbhc->stop = __hwahc_op_wusbhc_stop; wusbhc->mmcie_add = __hwahc_op_mmcie_add; wusbhc->mmcie_rm = __hwahc_op_mmcie_rm; wusbhc->dev_info_set = __hwahc_op_dev_info_set; wusbhc->bwa_set = __hwahc_op_bwa_set; wusbhc->set_num_dnts = __hwahc_op_set_num_dnts; wusbhc->set_ptk = __hwahc_op_set_ptk; wusbhc->set_gtk = __hwahc_op_set_gtk; result = hwahc_security_create(hwahc); if (result < 0) { dev_err(dev, "Can't initialize security: %d\n", result); goto error_security_create; } wa->wusb = wusbhc; /* FIXME: ugly, need to fix */ result = wusbhc_create(&hwahc->wusbhc); if (result < 0) { dev_err(dev, "Can't create WUSB HC structures: %d\n", result); goto error_wusbhc_create; } result = wa_create(&hwahc->wa, iface); if (result < 0) goto error_wa_create; return 0; error_wa_create: wusbhc_destroy(&hwahc->wusbhc); error_wusbhc_create: /* WA Descr fill allocs no resources */ error_security_create: error_fill_descriptor: uwb_rc_put(wusbhc->uwb_rc); error_rc_get: usb_put_intf(iface); usb_put_dev(usb_dev); return result; } static void hwahc_destroy(struct hwahc *hwahc) { struct wusbhc *wusbhc = &hwahc->wusbhc; d_fnstart(1, NULL, "(hwahc %p)\n", hwahc); mutex_lock(&wusbhc->mutex); __wa_destroy(&hwahc->wa); wusbhc_destroy(&hwahc->wusbhc); hwahc_security_release(hwahc); hwahc->wusbhc.dev = NULL; uwb_rc_put(wusbhc->uwb_rc); usb_put_intf(hwahc->wa.usb_iface); usb_put_dev(hwahc->wa.usb_dev); mutex_unlock(&wusbhc->mutex); d_fnend(1, NULL, "(hwahc %p) = void\n", hwahc); } static void hwahc_init(struct hwahc *hwahc) { wa_init(&hwahc->wa); } static int hwahc_probe(struct usb_interface *usb_iface, const struct usb_device_id *id) { int result; struct usb_hcd *usb_hcd; struct wusbhc *wusbhc; struct hwahc *hwahc; struct device *dev = &usb_iface->dev; d_fnstart(4, dev, "(%p, %p)\n", usb_iface, id); result = -ENOMEM; usb_hcd = usb_create_hcd(&hwahc_hc_driver, &usb_iface->dev, "wusb-hwa"); if (usb_hcd == NULL) { dev_err(dev, "unable to allocate instance\n"); goto error_alloc; } usb_hcd->wireless = 1; usb_hcd->flags |= HCD_FLAG_SAW_IRQ; wusbhc = usb_hcd_to_wusbhc(usb_hcd); hwahc = container_of(wusbhc, struct hwahc, wusbhc); hwahc_init(hwahc); result = hwahc_create(hwahc, usb_iface); if (result < 0) { dev_err(dev, "Cannot initialize internals: %d\n", result); goto error_hwahc_create; } result = usb_add_hcd(usb_hcd, 0, 0); if (result < 0) { dev_err(dev, "Cannot add HCD: %d\n", result); goto error_add_hcd; } result = wusbhc_b_create(&hwahc->wusbhc); if (result < 0) { dev_err(dev, "Cannot setup phase B of WUSBHC: %d\n", result); goto error_wusbhc_b_create; } d_fnend(4, dev, "(%p, %p) = 0\n", usb_iface, id); return 0; error_wusbhc_b_create: usb_remove_hcd(usb_hcd); error_add_hcd: hwahc_destroy(hwahc); error_hwahc_create: usb_put_hcd(usb_hcd); error_alloc: d_fnend(4, dev, "(%p, %p) = %d\n", usb_iface, id, result); return result; } static void hwahc_disconnect(struct usb_interface *usb_iface) { struct usb_hcd *usb_hcd; struct wusbhc *wusbhc; struct hwahc *hwahc; usb_hcd = usb_get_intfdata(usb_iface); wusbhc = usb_hcd_to_wusbhc(usb_hcd); hwahc = container_of(wusbhc, struct hwahc, wusbhc); d_fnstart(1, NULL, "(hwahc %p [usb_iface %p])\n", hwahc, usb_iface); wusbhc_b_destroy(&hwahc->wusbhc); usb_remove_hcd(usb_hcd); hwahc_destroy(hwahc); usb_put_hcd(usb_hcd); d_fnend(1, NULL, "(hwahc %p [usb_iface %p]) = void\n", hwahc, usb_iface); } /** USB device ID's that we handle */ static struct usb_device_id hwahc_id_table[] = { /* FIXME: use class labels for this */ { USB_INTERFACE_INFO(0xe0, 0x02, 0x01), }, {}, }; MODULE_DEVICE_TABLE(usb, hwahc_id_table); static struct usb_driver hwahc_driver = { .name = "hwa-hc", .probe = hwahc_probe, .disconnect = hwahc_disconnect, .id_table = hwahc_id_table, }; static int __init hwahc_driver_init(void) { int result; result = usb_register(&hwahc_driver); if (result < 0) { printk(KERN_ERR "WA-CDS: Cannot register USB driver: %d\n", result); goto error_usb_register; } return 0; error_usb_register: return result; } module_init(hwahc_driver_init); static void __exit hwahc_driver_exit(void) { usb_deregister(&hwahc_driver); } module_exit(hwahc_driver_exit); MODULE_AUTHOR("Inaky Perez-Gonzalez "); MODULE_DESCRIPTION("Host Wired Adapter USB Host Control Driver"); MODULE_LICENSE("GPL");