diff options
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/bluetooth/Makefile | 2 | ||||
| -rw-r--r-- | drivers/bluetooth/btintel.c | 232 | ||||
| -rw-r--r-- | drivers/bluetooth/btintel.h | 19 | ||||
| -rw-r--r-- | drivers/bluetooth/btusb.c | 408 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_bcm.c | 19 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_intel.c | 7 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_qca.c | 17 | ||||
| -rw-r--r-- | drivers/bluetooth/virtio_bt.c | 401 |
9 files changed, 833 insertions, 282 deletions
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 4e73a531b377..851842372c9b 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -425,4 +425,14 @@ config BT_HCIRSI Say Y here to compile support for HCI over Redpine into the kernel or say M to compile as a module. +config BT_VIRTIO + tristate "Virtio Bluetooth driver" + depends on VIRTIO + help + Virtio Bluetooth support driver. + This driver supports Virtio Bluetooth devices. + + Say Y here to compile support for HCI over Virtio into the + kernel or say M to compile as a module. + endmenu diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index 1a58a3ae142c..16286ea2655d 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -26,6 +26,8 @@ obj-$(CONFIG_BT_BCM) += btbcm.o obj-$(CONFIG_BT_RTL) += btrtl.o obj-$(CONFIG_BT_QCA) += btqca.o +obj-$(CONFIG_BT_VIRTIO) += virtio_bt.o + obj-$(CONFIG_BT_HCIUART_NOKIA) += hci_nokia.o obj-$(CONFIG_BT_HCIRSI) += btrsi.o diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index 88ce5f0ffc4b..e44b6993cf91 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -24,6 +24,14 @@ #define ECDSA_OFFSET 644 #define ECDSA_HEADER_LEN 320 +#define CMD_WRITE_BOOT_PARAMS 0xfc0e +struct cmd_write_boot_params { + u32 boot_addr; + u8 fw_build_num; + u8 fw_build_ww; + u8 fw_build_yy; +} __packed; + int btintel_check_bdaddr(struct hci_dev *hdev) { struct hci_rp_read_bd_addr *bda; @@ -208,10 +216,39 @@ void btintel_hw_error(struct hci_dev *hdev, u8 code) } EXPORT_SYMBOL_GPL(btintel_hw_error); -void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver) +int btintel_version_info(struct hci_dev *hdev, struct intel_version *ver) { const char *variant; + /* The hardware platform number has a fixed value of 0x37 and + * for now only accept this single value. + */ + if (ver->hw_platform != 0x37) { + bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)", + ver->hw_platform); + return -EINVAL; + } + + /* Check for supported iBT hardware variants of this firmware + * loading method. + * + * This check has been put in place to ensure correct forward + * compatibility options when newer hardware variants come along. + */ + switch (ver->hw_variant) { + case 0x0b: /* SfP */ + case 0x0c: /* WsP */ + case 0x11: /* JfP */ + case 0x12: /* ThP */ + case 0x13: /* HrP */ + case 0x14: /* CcP */ + break; + default: + bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)", + ver->hw_variant); + return -EINVAL; + } + switch (ver->fw_variant) { case 0x06: variant = "Bootloader"; @@ -220,13 +257,16 @@ void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver) variant = "Firmware"; break; default: - return; + bt_dev_err(hdev, "Unsupported firmware variant(%02x)", ver->fw_variant); + return -EINVAL; } bt_dev_info(hdev, "%s revision %u.%u build %u week %u %u", variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f, ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy); + + return 0; } EXPORT_SYMBOL_GPL(btintel_version_info); @@ -364,13 +404,56 @@ int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver) } EXPORT_SYMBOL_GPL(btintel_read_version); -void btintel_version_info_tlv(struct hci_dev *hdev, struct intel_version_tlv *version) +int btintel_version_info_tlv(struct hci_dev *hdev, struct intel_version_tlv *version) { const char *variant; + /* The hardware platform number has a fixed value of 0x37 and + * for now only accept this single value. + */ + if (INTEL_HW_PLATFORM(version->cnvi_bt) != 0x37) { + bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)", + INTEL_HW_PLATFORM(version->cnvi_bt)); + return -EINVAL; + } + + /* Check for supported iBT hardware variants of this firmware + * loading method. + * + * This check has been put in place to ensure correct forward + * compatibility options when newer hardware variants come along. + */ + switch (INTEL_HW_VARIANT(version->cnvi_bt)) { + case 0x17: /* TyP */ + case 0x18: /* Slr */ + case 0x19: /* Slr-F */ + break; + default: + bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)", + INTEL_HW_VARIANT(version->cnvi_bt)); + return -EINVAL; + } + switch (version->img_type) { case 0x01: variant = "Bootloader"; + /* It is required that every single firmware fragment is acknowledged + * with a command complete event. If the boot parameters indicate + * that this bootloader does not send them, then abort the setup. + */ + if (version->limited_cce != 0x00) { + bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)", + version->limited_cce); + return -EINVAL; + } + + /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */ + if (version->sbe_type > 0x01) { + bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)", + version->sbe_type); + return -EINVAL; + } + bt_dev_info(hdev, "Device revision is %u", version->dev_rev_id); bt_dev_info(hdev, "Secure boot is %s", version->secure_boot ? "enabled" : "disabled"); @@ -389,15 +472,14 @@ void btintel_version_info_tlv(struct hci_dev *hdev, struct intel_version_tlv *ve break; default: bt_dev_err(hdev, "Unsupported image type(%02x)", version->img_type); - goto done; + return -EINVAL; } bt_dev_info(hdev, "%s timestamp %u.%u buildtype %u build %u", variant, 2000 + (version->timestamp >> 8), version->timestamp & 0xff, version->build_type, version->build_num); -done: - return; + return 0; } EXPORT_SYMBOL_GPL(btintel_version_info_tlv); @@ -455,12 +537,23 @@ int btintel_read_version_tlv(struct hci_dev *hdev, struct intel_version_tlv *ver version->img_type = tlv->val[0]; break; case INTEL_TLV_TIME_STAMP: + /* If image type is Operational firmware (0x03), then + * running FW Calendar Week and Year information can + * be extracted from Timestamp information + */ + version->min_fw_build_cw = tlv->val[0]; + version->min_fw_build_yy = tlv->val[1]; version->timestamp = get_unaligned_le16(tlv->val); break; case INTEL_TLV_BUILD_TYPE: version->build_type = tlv->val[0]; break; case INTEL_TLV_BUILD_NUM: + /* If image type is Operational firmware (0x03), then + * running FW build number can be extracted from the + * Build information + */ + version->min_fw_build_nn = tlv->val[0]; version->build_num = get_unaligned_le32(tlv->val); break; case INTEL_TLV_SECURE_BOOT: @@ -841,7 +934,7 @@ static int btintel_sfi_ecdsa_header_secure_send(struct hci_dev *hdev, static int btintel_download_firmware_payload(struct hci_dev *hdev, const struct firmware *fw, - u32 *boot_param, size_t offset) + size_t offset) { int err; const u8 *fw_ptr; @@ -854,20 +947,6 @@ static int btintel_download_firmware_payload(struct hci_dev *hdev, while (fw_ptr - fw->data < fw->size) { struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len); - /* Each SKU has a different reset parameter to use in the - * HCI_Intel_Reset command and it is embedded in the firmware - * data. So, instead of using static value per SKU, check - * the firmware data and save it for later use. - */ - if (le16_to_cpu(cmd->opcode) == 0xfc0e) { - /* The boot parameter is the first 32-bit value - * and rest of 3 octets are reserved. - */ - *boot_param = get_unaligned_le32(fw_ptr + sizeof(*cmd)); - - bt_dev_dbg(hdev, "boot_param=0x%x", *boot_param); - } - frag_len += sizeof(*cmd) + cmd->plen; /* The parameter length of the secure send command requires @@ -896,28 +975,131 @@ done: return err; } +static bool btintel_firmware_version(struct hci_dev *hdev, + u8 num, u8 ww, u8 yy, + const struct firmware *fw, + u32 *boot_addr) +{ + const u8 *fw_ptr; + + fw_ptr = fw->data; + + while (fw_ptr - fw->data < fw->size) { + struct hci_command_hdr *cmd = (void *)(fw_ptr); + + /* Each SKU has a different reset parameter to use in the + * HCI_Intel_Reset command and it is embedded in the firmware + * data. So, instead of using static value per SKU, check + * the firmware data and save it for later use. + */ + if (le16_to_cpu(cmd->opcode) == CMD_WRITE_BOOT_PARAMS) { + struct cmd_write_boot_params *params; + + params = (void *)(fw_ptr + sizeof(*cmd)); + + bt_dev_info(hdev, "Boot Address: 0x%x", + le32_to_cpu(params->boot_addr)); + + bt_dev_info(hdev, "Firmware Version: %u-%u.%u", + params->fw_build_num, params->fw_build_ww, + params->fw_build_yy); + + return (num == params->fw_build_num && + ww == params->fw_build_ww && + yy == params->fw_build_yy); + } + + fw_ptr += sizeof(*cmd) + cmd->plen; + } + + return false; +} + int btintel_download_firmware(struct hci_dev *hdev, + struct intel_version *ver, const struct firmware *fw, u32 *boot_param) { int err; + /* SfP and WsP don't seem to update the firmware version on file + * so version checking is currently not possible. + */ + switch (ver->hw_variant) { + case 0x0b: /* SfP */ + case 0x0c: /* WsP */ + /* Skip version checking */ + break; + default: + /* Skip reading firmware file version in bootloader mode */ + if (ver->fw_variant == 0x06) + break; + + /* Skip download if firmware has the same version */ + if (btintel_firmware_version(hdev, ver->fw_build_num, + ver->fw_build_ww, ver->fw_build_yy, + fw, boot_param)) { + bt_dev_info(hdev, "Firmware already loaded"); + /* Return -EALREADY to indicate that the firmware has + * already been loaded. + */ + return -EALREADY; + } + } + + /* The firmware variant determines if the device is in bootloader + * mode or is running operational firmware. The value 0x06 identifies + * the bootloader and the value 0x23 identifies the operational + * firmware. + * + * If the firmware version has changed that means it needs to be reset + * to bootloader when operational so the new firmware can be loaded. + */ + if (ver->fw_variant == 0x23) + return -EINVAL; + err = btintel_sfi_rsa_header_secure_send(hdev, fw); if (err) return err; - return btintel_download_firmware_payload(hdev, fw, boot_param, - RSA_HEADER_LEN); + return btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN); } EXPORT_SYMBOL_GPL(btintel_download_firmware); int btintel_download_firmware_newgen(struct hci_dev *hdev, + struct intel_version_tlv *ver, const struct firmware *fw, u32 *boot_param, u8 hw_variant, u8 sbe_type) { int err; u32 css_header_ver; + /* Skip reading firmware file version in bootloader mode */ + if (ver->img_type != 0x01) { + /* Skip download if firmware has the same version */ + if (btintel_firmware_version(hdev, ver->min_fw_build_nn, + ver->min_fw_build_cw, + ver->min_fw_build_yy, + fw, boot_param)) { + bt_dev_info(hdev, "Firmware already loaded"); + /* Return -EALREADY to indicate that firmware has + * already been loaded. + */ + return -EALREADY; + } + } + + /* The firmware variant determines if the device is in bootloader + * mode or is running operational firmware. The value 0x01 identifies + * the bootloader and the value 0x03 identifies the operational + * firmware. + * + * If the firmware version has changed that means it needs to be reset + * to bootloader when operational so the new firmware can be loaded. + */ + if (ver->img_type == 0x03) + return -EINVAL; + /* iBT hardware variants 0x0b, 0x0c, 0x11, 0x12, 0x13, 0x14 support * only RSA secure boot engine. Hence, the corresponding sfi file will * have RSA header of 644 bytes followed by Command Buffer. @@ -947,7 +1129,7 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev, if (err) return err; - err = btintel_download_firmware_payload(hdev, fw, boot_param, RSA_HEADER_LEN); + err = btintel_download_firmware_payload(hdev, fw, RSA_HEADER_LEN); if (err) return err; } else if (hw_variant >= 0x17) { @@ -968,7 +1150,6 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev, return err; err = btintel_download_firmware_payload(hdev, fw, - boot_param, RSA_HEADER_LEN + ECDSA_HEADER_LEN); if (err) return err; @@ -978,7 +1159,6 @@ int btintel_download_firmware_newgen(struct hci_dev *hdev, return err; err = btintel_download_firmware_payload(hdev, fw, - boot_param, RSA_HEADER_LEN + ECDSA_HEADER_LEN); if (err) return err; diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index 6511b091caf5..d184064a5e7c 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -148,8 +148,8 @@ int btintel_set_diag(struct hci_dev *hdev, bool enable); int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable); void btintel_hw_error(struct hci_dev *hdev, u8 code); -void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver); -void btintel_version_info_tlv(struct hci_dev *hdev, struct intel_version_tlv *version); +int btintel_version_info(struct hci_dev *hdev, struct intel_version *ver); +int btintel_version_info_tlv(struct hci_dev *hdev, struct intel_version_tlv *version); int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen, const void *param); int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name); @@ -163,9 +163,10 @@ struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read, int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param); int btintel_read_boot_params(struct hci_dev *hdev, struct intel_boot_params *params); -int btintel_download_firmware(struct hci_dev *dev, const struct firmware *fw, - u32 *boot_param); +int btintel_download_firmware(struct hci_dev *dev, struct intel_version *ver, + const struct firmware *fw, u32 *boot_param); int btintel_download_firmware_newgen(struct hci_dev *hdev, + struct intel_version_tlv *ver, const struct firmware *fw, u32 *boot_param, u8 hw_variant, u8 sbe_type); @@ -210,14 +211,16 @@ static inline void btintel_hw_error(struct hci_dev *hdev, u8 code) { } -static inline void btintel_version_info(struct hci_dev *hdev, - struct intel_version *ver) +static inline int btintel_version_info(struct hci_dev *hdev, + struct intel_version *ver) { + return -EOPNOTSUPP; } -static inline void btintel_version_info_tlv(struct hci_dev *hdev, - struct intel_version_tlv *version) +static inline int btintel_version_info_tlv(struct hci_dev *hdev, + struct intel_version_tlv *version) { + return -EOPNOTSUPP; } static inline int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 5cbfbd948f67..5d603ef39bad 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -399,7 +399,9 @@ static const struct usb_device_id blacklist_table[] = { /* MediaTek Bluetooth devices */ { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), - .driver_info = BTUSB_MEDIATEK }, + .driver_info = BTUSB_MEDIATEK | + BTUSB_WIDEBAND_SPEECH | + BTUSB_VALID_LE_STATES }, /* Additional MediaTek MT7615E Bluetooth devices */ { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, @@ -455,6 +457,8 @@ static const struct usb_device_id blacklist_table[] = { BTUSB_WIDEBAND_SPEECH }, { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | BTUSB_WIDEBAND_SPEECH }, + { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | + BTUSB_WIDEBAND_SPEECH }, /* Silicon Wave based devices */ { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, @@ -2400,7 +2404,7 @@ static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) return -EILSEQ; } -static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver, +static int btusb_setup_intel_new_get_fw_name(struct intel_version *ver, struct intel_boot_params *params, char *fw_name, size_t len, const char *suffix) @@ -2424,9 +2428,10 @@ static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver, suffix); break; default: - return false; + return -EINVAL; } - return true; + + return 0; } static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv, @@ -2444,6 +2449,44 @@ static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv suffix); } +static int btusb_download_wait(struct hci_dev *hdev, ktime_t calltime, int msec) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + ktime_t delta, rettime; + unsigned long long duration; + int err; + + set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); + + bt_dev_info(hdev, "Waiting for firmware download to complete"); + + err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, + TASK_INTERRUPTIBLE, + msecs_to_jiffies(msec)); + if (err == -EINTR) { + bt_dev_err(hdev, "Firmware loading interrupted"); + return err; + } + + if (err) { + bt_dev_err(hdev, "Firmware loading timeout"); + return -ETIMEDOUT; + } + + if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { + bt_dev_err(hdev, "Firmware loading failed"); + return -ENOEXEC; + } + + rettime = ktime_get(); + delta = ktime_sub(rettime, calltime); + duration = (unsigned long long)ktime_to_ns(delta) >> 10; + + bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); + + return 0; +} + static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, struct intel_version_tlv *ver, u32 *boot_param) @@ -2452,19 +2495,11 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, char fwname[64]; int err; struct btusb_data *data = hci_get_drvdata(hdev); + ktime_t calltime; if (!ver || !boot_param) return -EINVAL; - /* The hardware platform number has a fixed value of 0x37 and - * for now only accept this single value. - */ - if (INTEL_HW_PLATFORM(ver->cnvi_bt) != 0x37) { - bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)", - INTEL_HW_PLATFORM(ver->cnvi_bt)); - return -EINVAL; - } - /* The firmware variant determines if the device is in bootloader * mode or is running operational firmware. The value 0x03 identifies * the bootloader and the value 0x23 identifies the operational @@ -2481,50 +2516,6 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, if (ver->img_type == 0x03) { clear_bit(BTUSB_BOOTLOADER, &data->flags); btintel_check_bdaddr(hdev); - return 0; - } - - /* Check for supported iBT hardware variants of this firmware - * loading method. - * - * This check has been put in place to ensure correct forward - * compatibility options when newer hardware variants come along. - */ - switch (INTEL_HW_VARIANT(ver->cnvi_bt)) { - case 0x17: /* TyP */ - case 0x18: /* Slr */ - case 0x19: /* Slr-F */ - break; - default: - bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)", - INTEL_HW_VARIANT(ver->cnvi_bt)); - return -EINVAL; - } - - /* If the device is not in bootloader mode, then the only possible - * choice is to return an error and abort the device initialization. - */ - if (ver->img_type != 0x01) { - bt_dev_err(hdev, "Unsupported Intel firmware variant (0x%x)", - ver->img_type); - return -ENODEV; - } - - /* It is required that every single firmware fragment is acknowledged - * with a command complete event. If the boot parameters indicate - * that this bootloader does not send them, then abort the setup. - */ - if (ver->limited_cce != 0x00) { - bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)", - ver->limited_cce); - return -EINVAL; - } - - /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */ - if (ver->sbe_type > 0x01) { - bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)", - ver->sbe_type); - return -EINVAL; } /* If the OTP has no valid Bluetooth device address, then there will @@ -2538,7 +2529,8 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi"); err = request_firmware(&fw, fwname, &hdev->dev); if (err < 0) { - bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); + bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)", + fwname, err); return err; } @@ -2551,22 +2543,28 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, goto done; } + calltime = ktime_get(); + set_bit(BTUSB_DOWNLOADING, &data->flags); /* Start firmware downloading and get boot parameter */ - err = btintel_download_firmware_newgen(hdev, fw, boot_param, + err = btintel_download_firmware_newgen(hdev, ver, fw, boot_param, INTEL_HW_VARIANT(ver->cnvi_bt), ver->sbe_type); if (err < 0) { + if (err == -EALREADY) { + /* Firmware has already been loaded */ + set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); + err = 0; + goto done; + } + /* When FW download fails, send Intel Reset to retry * FW download. */ btintel_reset_to_bootloader(hdev); goto done; } - set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); - - bt_dev_info(hdev, "Waiting for firmware download to complete"); /* Before switching the device into operational mode and with that * booting the loaded firmware, wait for the bootloader notification @@ -2579,26 +2577,9 @@ static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, * and thus just timeout if that happens and fail the setup * of this device. */ - err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, - TASK_INTERRUPTIBLE, - msecs_to_jiffies(5000)); - if (err == -EINTR) { - bt_dev_err(hdev, "Firmware loading interrupted"); - goto done; - } - - if (err) { - bt_dev_err(hdev, "Firmware loading timeout"); - err = -ETIMEDOUT; + err = btusb_download_wait(hdev, calltime, 5000); + if (err == -ETIMEDOUT) btintel_reset_to_bootloader(hdev); - goto done; - } - - if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { - bt_dev_err(hdev, "Firmware loading failed"); - err = -ENOEXEC; - goto done; - } done: release_firmware(fw); @@ -2614,41 +2595,11 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, char fwname[64]; int err; struct btusb_data *data = hci_get_drvdata(hdev); + ktime_t calltime; if (!ver || !params) return -EINVAL; - /* The hardware platform number has a fixed value of 0x37 and - * for now only accept this single value. - */ - if (ver->hw_platform != 0x37) { - bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)", - ver->hw_platform); - return -EINVAL; - } - - /* Check for supported iBT hardware variants of this firmware - * loading method. - * - * This check has been put in place to ensure correct forward - * compatibility options when newer hardware variants come along. - */ - switch (ver->hw_variant) { - case 0x0b: /* SfP */ - case 0x0c: /* WsP */ - case 0x11: /* JfP */ - case 0x12: /* ThP */ - case 0x13: /* HrP */ - case 0x14: /* CcP */ - break; - default: - bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)", - ver->hw_variant); - return -EINVAL; - } - - btintel_version_info(hdev, ver); - /* The firmware variant determines if the device is in bootloader * mode or is running operational firmware. The value 0x06 identifies * the bootloader and the value 0x23 identifies the operational @@ -2665,16 +2616,18 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, if (ver->fw_variant == 0x23) { clear_bit(BTUSB_BOOTLOADER, &data->flags); btintel_check_bdaddr(hdev); - return 0; - } - /* If the device is not in bootloader mode, then the only possible - * choice is to return an error and abort the device initialization. - */ - if (ver->fw_variant != 0x06) { - bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)", - ver->fw_variant); - return -ENODEV; + /* SfP and WsP don't seem to update the firmware version on file + * so version checking is currently possible. + */ + switch (ver->hw_variant) { + case 0x0b: /* SfP */ + case 0x0c: /* WsP */ + return 0; + } + + /* Proceed to download to check if the version matches */ + goto download; } /* Read the secure boot parameters to identify the operating @@ -2702,6 +2655,7 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); } +download: /* With this Intel bootloader only the hardware variant and device * revision information are used to select the right firmware for SfP * and WsP. @@ -2725,14 +2679,15 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, */ err = btusb_setup_intel_new_get_fw_name(ver, params, fwname, sizeof(fwname), "sfi"); - if (!err) { + if (err < 0) { bt_dev_err(hdev, "Unsupported Intel firmware naming"); return -EINVAL; } err = request_firmware(&fw, fwname, &hdev->dev); if (err < 0) { - bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); + bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)", + fwname, err); return err; } @@ -2745,20 +2700,26 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, goto done; } + calltime = ktime_get(); + set_bit(BTUSB_DOWNLOADING, &data->flags); /* Start firmware downloading and get boot parameter */ - err = btintel_download_firmware(hdev, fw, boot_param); + err = btintel_download_firmware(hdev, ver, fw, boot_param); if (err < 0) { + if (err == -EALREADY) { + /* Firmware has already been loaded */ + set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); + err = 0; + goto done; + } + /* When FW download fails, send Intel Reset to retry * FW download. */ btintel_reset_to_bootloader(hdev); goto done; } - set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); - - bt_dev_info(hdev, "Waiting for firmware download to complete"); /* Before switching the device into operational mode and with that * booting the loaded firmware, wait for the bootloader notification @@ -2771,29 +2732,74 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, * and thus just timeout if that happens and fail the setup * of this device. */ - err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, + err = btusb_download_wait(hdev, calltime, 5000); + if (err == -ETIMEDOUT) + btintel_reset_to_bootloader(hdev); + +done: + release_firmware(fw); + return err; +} + +static int btusb_boot_wait(struct hci_dev *hdev, ktime_t calltime, int msec) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + ktime_t delta, rettime; + unsigned long long duration; + int err; + + bt_dev_info(hdev, "Waiting for device to boot"); + + err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, TASK_INTERRUPTIBLE, - msecs_to_jiffies(5000)); + msecs_to_jiffies(msec)); if (err == -EINTR) { - bt_dev_err(hdev, "Firmware loading interrupted"); - goto done; + bt_dev_err(hdev, "Device boot interrupted"); + return -EINTR; } if (err) { - bt_dev_err(hdev, "Firmware loading timeout"); - err = -ETIMEDOUT; - btintel_reset_to_bootloader(hdev); - goto done; + bt_dev_err(hdev, "Device boot timeout"); + return -ETIMEDOUT; } - if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { - bt_dev_err(hdev, "Firmware loading failed"); - err = -ENOEXEC; - goto done; + rettime = ktime_get(); + delta = ktime_sub(rettime, calltime); + duration = (unsigned long long) ktime_to_ns(delta) >> 10; + + bt_dev_info(hdev, "Device booted in %llu usecs", duration); + + return 0; +} + +static int btusb_intel_boot(struct hci_dev *hdev, u32 boot_addr) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + ktime_t calltime; + int err; + + calltime = ktime_get(); + + set_bit(BTUSB_BOOTING, &data->flags); + + err = btintel_send_intel_reset(hdev, boot_addr); + if (err) { + bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); + btintel_reset_to_bootloader(hdev); + return err; } -done: - release_firmware(fw); + /* The bootloader will not indicate when the device is ready. This + * is done by the operational firmware sending bootup notification. + * + * Booting into operational firmware should not take longer than + * 1 second. However if that happens, then just fail the setup + * since something went wrong. + */ + err = btusb_boot_wait(hdev, calltime, 1000); + if (err == -ETIMEDOUT) + btintel_reset_to_bootloader(hdev); + return err; } @@ -2804,8 +2810,6 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) struct intel_boot_params params; u32 boot_param; char ddcname[64]; - ktime_t calltime, delta, rettime; - unsigned long long duration; int err; struct intel_debug_features features; @@ -2817,8 +2821,6 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) */ boot_param = 0x00000000; - calltime = ktime_get(); - /* Read the Intel version information to determine if the device * is in bootloader mode or if it already has operational firmware * loaded. @@ -2830,6 +2832,10 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) return err; } + err = btintel_version_info(hdev, &ver); + if (err) + return err; + err = btusb_intel_download_firmware(hdev, &ver, ¶ms, &boot_param); if (err) return err; @@ -2838,59 +2844,16 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) if (ver.fw_variant == 0x23) goto finish; - rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); - duration = (unsigned long long) ktime_to_ns(delta) >> 10; - - bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); - - calltime = ktime_get(); - - set_bit(BTUSB_BOOTING, &data->flags); - - err = btintel_send_intel_reset(hdev, boot_param); - if (err) { - bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); - btintel_reset_to_bootloader(hdev); + err = btusb_intel_boot(hdev, boot_param); + if (err) return err; - } - - /* The bootloader will not indicate when the device is ready. This - * is done by the operational firmware sending bootup notification. - * - * Booting into operational firmware should not take longer than - * 1 second. However if that happens, then just fail the setup - * since something went wrong. - */ - bt_dev_info(hdev, "Waiting for device to boot"); - - err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, - TASK_INTERRUPTIBLE, - msecs_to_jiffies(1000)); - - if (err == -EINTR) { - bt_dev_err(hdev, "Device boot interrupted"); - return -EINTR; - } - - if (err) { - bt_dev_err(hdev, "Device boot timeout"); - btintel_reset_to_bootloader(hdev); - return -ETIMEDOUT; - } - - rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); - duration = (unsigned long long) ktime_to_ns(delta) >> 10; - - bt_dev_info(hdev, "Device booted in %llu usecs", duration); clear_bit(BTUSB_BOOTLOADER, &data->flags); err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, ddcname, sizeof(ddcname), "ddc"); - if (!err) { + if (err < 0) { bt_dev_err(hdev, "Unsupported Intel firmware naming"); } else { /* Once the device is running in operational mode, it needs to @@ -2947,8 +2910,6 @@ static int btusb_setup_intel_newgen(struct hci_dev *hdev) struct btusb_data *data = hci_get_drvdata(hdev); u32 boot_param; char ddcname[64]; - ktime_t calltime, delta, rettime; - unsigned long long duration; int err; struct intel_debug_features features; struct intel_version_tlv version; @@ -2961,8 +2922,6 @@ static int btusb_setup_intel_newgen(struct hci_dev *hdev) */ boot_param = 0x00000000; - calltime = ktime_get(); - /* Read the Intel version information to determine if the device * is in bootloader mode or if it already has operational firmware * loaded. @@ -2974,7 +2933,9 @@ static int btusb_setup_intel_newgen(struct hci_dev *hdev) return err; } - btintel_version_info_tlv(hdev, &version); + err = btintel_version_info_tlv(hdev, &version); + if (err) + return err; err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param); if (err) @@ -2984,52 +2945,9 @@ static int btusb_setup_intel_newgen(struct hci_dev *hdev) if (version.img_type == 0x03) goto finish; - rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); - duration = (unsigned long long)ktime_to_ns(delta) >> 10; - - bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); - - calltime = ktime_get(); - - set_bit(BTUSB_BOOTING, &data->flags); - - err = btintel_send_intel_reset(hdev, boot_param); - if (err) { - bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); - btintel_reset_to_bootloader(hdev); + err = btusb_intel_boot(hdev, boot_param); + if (err) return err; - } - - /* The bootloader will not indicate when the device is ready. This - * is done by the operational firmware sending bootup notification. - * - * Booting into operational firmware should not take longer than - * 1 second. However if that happens, then just fail the setup - * since something went wrong. - */ - bt_dev_info(hdev, "Waiting for device to boot"); - - err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, - TASK_INTERRUPTIBLE, - msecs_to_jiffies(1000)); - - if (err == -EINTR) { - bt_dev_err(hdev, "Device boot interrupted"); - return -EINTR; - } - - if (err) { - bt_dev_err(hdev, "Device boot timeout"); - btintel_reset_to_bootloader(hdev); - return -ETIMEDOUT; - } - - rettime = ktime_get(); - delta = ktime_sub(rettime, calltime); - duration = (unsigned long long)ktime_to_ns(delta) >> 10; - - bt_dev_info(hdev, "Device booted in %llu usecs", duration); clear_bit(BTUSB_BOOTLOADER, &data->flags); @@ -3495,7 +3413,7 @@ static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwnam fw_ptr = fw->data; fw_bin_ptr = fw_ptr; globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE); - section_num = globaldesc->section_num; + section_num = le32_to_cpu(globaldesc->section_num); for (i = 0; i < section_num; i++) { first_block = 1; @@ -3503,8 +3421,8 @@ static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwnam sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE + MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i); - section_offset = sectionmap->secoffset; - dl_size = sectionmap->bin_info_spec.dlsize; + section_offset = le32_to_cpu(sectionmap->secoffset); + dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize); if (dl_size > 0) { retry = 20; @@ -3740,7 +3658,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev) int err, status; u32 dev_id; char fw_bin_name[64]; - u32 fw_version; + u32 fw_version = 0; u8 param; calltime = ktime_get(); diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c index 3764ceb6fa0d..3cd57fc56ade 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -68,6 +68,8 @@ struct bcm_device_data { * deassert = Bluetooth device may sleep when sleep criteria are met * @shutdown: BT_REG_ON pin, * power up or power down Bluetooth device internal regulators + * @reset: BT_RST_N pin, + * active low resets the Bluetooth logic core * @set_device_wakeup: callback to toggle BT_WAKE pin * either by accessing @device_wakeup or by calling @btlp * @set_shutdown: callback to toggle BT_REG_ON pin @@ -101,6 +103,7 @@ struct bcm_device { const char *name; struct gpio_desc *device_wakeup; struct gpio_desc *shutdown; + struct gpio_desc *reset; int (*set_device_wakeup)(struct bcm_device *, bool); int (*set_shutdown)(struct bcm_device *, bool); #ifdef CONFIG_ACPI @@ -985,6 +988,15 @@ static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake) static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered) { gpiod_set_value_cansleep(dev->shutdown, powered); + if (dev->reset) + /* + * The reset line is asserted on powerdown and deasserted + * on poweron so the inverse of powered is used. Notice + * that the GPIO line BT_RST_N needs to be specified as + * active low in the device tree or similar system + * description. + */ + gpiod_set_value_cansleep(dev->reset, !powered); return 0; } @@ -1050,6 +1062,11 @@ static int bcm_get_resources(struct bcm_device *dev) if (IS_ERR(dev->shutdown)) return PTR_ERR(dev->shutdown); + dev->reset = devm_gpiod_get_optional(dev->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(dev->reset)) + return PTR_ERR(dev->reset); + dev->set_device_wakeup = bcm_gpio_set_device_wakeup; dev->set_shutdown = bcm_gpio_set_shutdown; @@ -1482,6 +1499,8 @@ static struct bcm_device_data bcm43438_device_data = { static const struct of_device_id bcm_bluetooth_of_match[] = { { .compatible = "brcm,bcm20702a1" }, { .compatible = "brcm,bcm4329-bt" }, + { .compatible = "brcm,bcm4330-bt" }, + { .compatible = "brcm,bcm4334-bt" }, { .compatible = "brcm,bcm4345c5" }, { .compatible = "brcm,bcm4330-bt" }, { .compatible = "brcm,bcm43438-bt", .data = &bcm43438_device_data }, diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c index b20a40fab83e..7249b91d9b91 100644 --- a/drivers/bluetooth/hci_intel.c +++ b/drivers/bluetooth/hci_intel.c @@ -735,7 +735,7 @@ static int intel_setup(struct hci_uart *hu) set_bit(STATE_DOWNLOADING, &intel->flags); /* Start firmware downloading and get boot parameter */ - err = btintel_download_firmware(hdev, fw, &boot_param); + err = btintel_download_firmware(hdev, &ver, fw, &boot_param); if (err < 0) goto done; @@ -784,7 +784,10 @@ static int intel_setup(struct hci_uart *hu) done: release_firmware(fw); - if (err < 0) + /* Check if there was an error and if is not -EALREADY which means the + * firmware has already been loaded. + */ + if (err < 0 && err != -EALREADY) return err; /* We need to restore the default speed before Intel reset */ diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index de36af63e182..0a0056912d51 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1066,7 +1066,7 @@ static void qca_controller_memdump(struct work_struct *work) * packets in the buffer. */ /* For QCA6390, controller does not lost packets but - * sequence number field of packat sometimes has error + * sequence number field of packet sometimes has error * bits, so skip this checking for missing packet. */ while ((seq_no > qca_memdump->current_seq_no + 1) && @@ -1571,6 +1571,20 @@ static void qca_cmd_timeout(struct hci_dev *hdev) mutex_unlock(&qca->hci_memdump_lock); } +static bool qca_prevent_wake(struct hci_dev *hdev) +{ + struct hci_uart *hu = hci_get_drvdata(hdev); + bool wakeup; + + /* UART driver handles the interrupt from BT SoC.So we need to use + * device handle of UART driver to get the status of device may wakeup. + */ + wakeup = device_may_wakeup(hu->serdev->ctrl->dev.parent); + bt_dev_dbg(hu->hdev, "wakeup status : %d", wakeup); + + return !wakeup; +} + static int qca_wcn3990_init(struct hci_uart *hu) { struct qca_serdev *qcadev; @@ -1721,6 +1735,7 @@ retry: qca_debugfs_init(hdev); hu->hdev->hw_error = qca_hw_error; hu->hdev->cmd_timeout = qca_cmd_timeout; + hu->hdev->prevent_wake = qca_prevent_wake; } else if (ret == -ENOENT) { /* No patch/nvm-config found, run with original fw/config */ set_bit(QCA_ROM_FW, &qca->flags); diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c new file mode 100644 index 000000000000..c804db7e90f8 --- /dev/null +++ b/drivers/bluetooth/virtio_bt.c @@ -0,0 +1,401 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/module.h> +#include <linux/virtio.h> +#include <linux/virtio_config.h> +#include <linux/skbuff.h> + +#include <uapi/linux/virtio_ids.h> +#include <uapi/linux/virtio_bt.h> + +#include <net/bluetooth/bluetooth.h> +#include <net/bluetooth/hci_core.h> + +#define VERSION "0.1" + +enum { + VIRTBT_VQ_TX, + VIRTBT_VQ_RX, + VIRTBT_NUM_VQS, +}; + +struct virtio_bluetooth { + struct virtio_device *vdev; + struct virtqueue *vqs[VIRTBT_NUM_VQS]; + struct work_struct rx; + struct hci_dev *hdev; +}; + +static int virtbt_add_inbuf(struct virtio_bluetooth *vbt) +{ + struct virtqueue *vq = vbt->vqs[VIRTBT_VQ_RX]; + struct scatterlist sg[1]; + struct sk_buff *skb; + int err; + + skb = alloc_skb(1000, GFP_KERNEL); + sg_init_one(sg, skb->data, 1000); + + err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL); + if (err < 0) { + kfree_skb(skb); + return err; + } + + return 0; +} + +static int virtbt_open(struct hci_dev *hdev) +{ + struct virtio_bluetooth *vbt = hci_get_drvdata(hdev); + + if (virtbt_add_inbuf(vbt) < 0) + return -EIO; + + virtqueue_kick(vbt->vqs[VIRTBT_VQ_RX]); + return 0; +} + +static int virtbt_close(struct hci_dev *hdev) +{ + struct virtio_bluetooth *vbt = hci_get_drvdata(hdev); + int i; + + cancel_work_sync(&vbt->rx); + + for (i = 0; i < ARRAY_SIZE(vbt->vqs); i++) { + struct virtqueue *vq = vbt->vqs[i]; + struct sk_buff *skb; + + while ((skb = virtqueue_detach_unused_buf(vq))) + kfree_skb(skb); + } + + return 0; +} + +static int virtbt_flush(struct hci_dev *hdev) +{ + return 0; +} + +static int virtbt_send_frame(struct hci_dev *hdev, struct sk_buff *skb) +{ + struct virtio_bluetooth *vbt = hci_get_drvdata(hdev); + struct scatterlist sg[1]; + int err; + + memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); + + sg_init_one(sg, skb->data, skb->len); + err = virtqueue_add_outbuf(vbt->vqs[VIRTBT_VQ_TX], sg, 1, skb, + GFP_KERNEL); + if (err) { + kfree_skb(skb); + return err; + } + + virtqueue_kick(vbt->vqs[VIRTBT_VQ_TX]); + return 0; +} + +static int virtbt_setup_zephyr(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Read Build Information */ + skb = __hci_cmd_sync(hdev, 0xfc08, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); + + hci_set_fw_info(hdev, "%s", skb->data + 1); + + kfree_skb(skb); + return 0; +} + +static int virtbt_set_bdaddr_zephyr(struct hci_dev *hdev, + const bdaddr_t *bdaddr) +{ + struct sk_buff *skb; + + /* Write BD_ADDR */ + skb = __hci_cmd_sync(hdev, 0xfc06, 6, bdaddr, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static int virtbt_setup_intel(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Intel Read Version */ + skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static int virtbt_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr) +{ + struct sk_buff *skb; + + /* Intel Write BD Address */ + skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static int virtbt_setup_realtek(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Read ROM Version */ + skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + bt_dev_info(hdev, "ROM version %u", *((__u8 *) (skb->data + 1))); + + kfree_skb(skb); + return 0; +} + +static int virtbt_shutdown_generic(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + /* Reset */ + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) + return PTR_ERR(skb); + + kfree_skb(skb); + return 0; +} + +static void virtbt_rx_handle(struct virtio_bluetooth *vbt, struct sk_buff *skb) +{ + __u8 pkt_type; + + pkt_type = *((__u8 *) skb->data); + skb_pull(skb, 1); + + switch (pkt_type) { + case HCI_EVENT_PKT: + case HCI_ACLDATA_PKT: + case HCI_SCODATA_PKT: + case HCI_ISODATA_PKT: + hci_skb_pkt_type(skb) = pkt_type; + hci_recv_frame(vbt->hdev, skb); + break; + } +} + +static void virtbt_rx_work(struct work_struct *work) +{ + struct virtio_bluetooth *vbt = container_of(work, + struct virtio_bluetooth, rx); + struct sk_buff *skb; + unsigned int len; + + skb = virtqueue_get_buf(vbt->vqs[VIRTBT_VQ_RX], &len); + if (!skb) + return; + + skb->len = len; + virtbt_rx_handle(vbt, skb); + + if (virtbt_add_inbuf(vbt) < 0) + return; + + virtqueue_kick(vbt->vqs[VIRTBT_VQ_RX]); +} + +static void virtbt_tx_done(struct virtqueue *vq) +{ + struct sk_buff *skb; + unsigned int len; + + while ((skb = virtqueue_get_buf(vq, &len))) + kfree_skb(skb); +} + +static void virtbt_rx_done(struct virtqueue *vq) +{ + struct virtio_bluetooth *vbt = vq->vdev->priv; + + schedule_work(&vbt->rx); +} + +static int virtbt_probe(struct virtio_device *vdev) +{ + vq_callback_t *callbacks[VIRTBT_NUM_VQS] = { + [VIRTBT_VQ_TX] = virtbt_tx_done, + [VIRTBT_VQ_RX] = virtbt_rx_done, + }; + const char *names[VIRTBT_NUM_VQS] = { + [VIRTBT_VQ_TX] = "tx", + [VIRTBT_VQ_RX] = "rx", + }; + struct virtio_bluetooth *vbt; + struct hci_dev *hdev; + int err; + __u8 type; + + if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return -ENODEV; + + type = virtio_cread8(vdev, offsetof(struct virtio_bt_config, type)); + + switch (type) { + case VIRTIO_BT_CONFIG_TYPE_PRIMARY: + case VIRTIO_BT_CONFIG_TYPE_AMP: + break; + default: + return -EINVAL; + } + + vbt = kzalloc(sizeof(*vbt), GFP_KERNEL); + if (!vbt) + return -ENOMEM; + + vdev->priv = vbt; + vbt->vdev = vdev; + + INIT_WORK(&vbt->rx, virtbt_rx_work); + + err = virtio_find_vqs(vdev, VIRTBT_NUM_VQS, vbt->vqs, callbacks, + names, NULL); + if (err) + return err; + + hdev = hci_alloc_dev(); + if (!hdev) { + err = -ENOMEM; + goto failed; + } + + vbt->hdev = hdev; + + hdev->bus = HCI_VIRTIO; + hdev->dev_type = type; + hci_set_drvdata(hdev, vbt); + + hdev->open = virtbt_open; + hdev->close = virtbt_close; + hdev->flush = virtbt_flush; + hdev->send = virtbt_send_frame; + + if (virtio_has_feature(vdev, VIRTIO_BT_F_VND_HCI)) { + __u16 vendor; + + virtio_cread(vdev, struct virtio_bt_config, vendor, &vendor); + + switch (vendor) { + case VIRTIO_BT_CONFIG_VENDOR_ZEPHYR: + hdev->manufacturer = 1521; + hdev->setup = virtbt_setup_zephyr; + hdev->shutdown = virtbt_shutdown_generic; + hdev->set_bdaddr = virtbt_set_bdaddr_zephyr; + break; + + case VIRTIO_BT_CONFIG_VENDOR_INTEL: + hdev->manufacturer = 2; + hdev->setup = virtbt_setup_intel; + hdev->shutdown = virtbt_shutdown_generic; + hdev->set_bdaddr = virtbt_set_bdaddr_intel; + set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); + set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); + set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); + break; + + case VIRTIO_BT_CONFIG_VENDOR_REALTEK: + hdev->manufacturer = 93; + hdev->setup = virtbt_setup_realtek; + hdev->shutdown = virtbt_shutdown_generic; + set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); + set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); + break; + } + } + + if (virtio_has_feature(vdev, VIRTIO_BT_F_MSFT_EXT)) { + __u16 msft_opcode; + + virtio_cread(vdev, struct virtio_bt_config, + msft_opcode, &msft_opcode); + + hci_set_msft_opcode(hdev, msft_opcode); + } + + if (virtio_has_feature(vdev, VIRTIO_BT_F_AOSP_EXT)) + hci_set_aosp_capable(hdev); + + if (hci_register_dev(hdev) < 0) { + hci_free_dev(hdev); + err = -EBUSY; + goto failed; + } + + return 0; + +failed: + vdev->config->del_vqs(vdev); + return err; +} + +static void virtbt_remove(struct virtio_device *vdev) +{ + struct virtio_bluetooth *vbt = vdev->priv; + struct hci_dev *hdev = vbt->hdev; + + hci_unregister_dev(hdev); + vdev->config->reset(vdev); + + hci_free_dev(hdev); + vbt->hdev = NULL; + + vdev->config->del_vqs(vdev); + kfree(vbt); +} + +static struct virtio_device_id virtbt_table[] = { + { VIRTIO_ID_BT, VIRTIO_DEV_ANY_ID }, + { 0 }, +}; + +MODULE_DEVICE_TABLE(virtio, virtbt_table); + +static const unsigned int virtbt_features[] = { + VIRTIO_BT_F_VND_HCI, + VIRTIO_BT_F_MSFT_EXT, + VIRTIO_BT_F_AOSP_EXT, +}; + +static struct virtio_driver virtbt_driver = { + .driver.name = KBUILD_MODNAME, + .driver.owner = THIS_MODULE, + .feature_table = virtbt_features, + .feature_table_size = ARRAY_SIZE(virtbt_features), + .id_table = virtbt_table, + .probe = virtbt_probe, + .remove = virtbt_remove, +}; + +module_virtio_driver(virtbt_driver); + +MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); +MODULE_DESCRIPTION("Generic Bluetooth VIRTIO driver ver " VERSION); +MODULE_VERSION(VERSION); +MODULE_LICENSE("GPL"); |