/* * * Generic Bluetooth USB driver * * Copyright (C) 2005-2008 Marcel Holtmann * * * 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 #include #include #include #include #include #include #include #include #include #include #define VERSION "0.6" static bool ignore_dga; static bool ignore_csr; static bool ignore_sniffer; static bool disable_scofix; static bool force_scofix; static bool reset = 1; static struct usb_driver btusb_driver; #define BTUSB_IGNORE 0x01 #define BTUSB_DIGIANSWER 0x02 #define BTUSB_CSR 0x04 #define BTUSB_SNIFFER 0x08 #define BTUSB_BCM92035 0x10 #define BTUSB_BROKEN_ISOC 0x20 #define BTUSB_WRONG_SCO_MTU 0x40 #define BTUSB_ATH3012 0x80 static struct usb_device_id btusb_table[] = { /* Generic Bluetooth USB device */ { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, /* Apple-specific (Broadcom) devices */ { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) }, /* Broadcom SoftSailing reporting vendor specific */ { USB_DEVICE(0x0a5c, 0x21e1) }, /* Apple MacBookPro 7,1 */ { USB_DEVICE(0x05ac, 0x8213) }, /* Apple iMac11,1 */ { USB_DEVICE(0x05ac, 0x8215) }, /* Apple MacBookPro6,2 */ { USB_DEVICE(0x05ac, 0x8218) }, /* Apple MacBookAir3,1, MacBookAir3,2 */ { USB_DEVICE(0x05ac, 0x821b) }, /* Apple MacBookAir4,1 */ { USB_DEVICE(0x05ac, 0x821f) }, /* Apple MacBookPro8,2 */ { USB_DEVICE(0x05ac, 0x821a) }, /* Apple MacMini5,1 */ { USB_DEVICE(0x05ac, 0x8281) }, /* AVM BlueFRITZ! USB v2.0 */ { USB_DEVICE(0x057c, 0x3800) }, /* Bluetooth Ultraport Module from IBM */ { USB_DEVICE(0x04bf, 0x030a) }, /* ALPS Modules with non-standard id */ { USB_DEVICE(0x044e, 0x3001) }, { USB_DEVICE(0x044e, 0x3002) }, /* Ericsson with non-standard id */ { USB_DEVICE(0x0bdb, 0x1002) }, /* Canyon CN-BTU1 with HID interfaces */ { USB_DEVICE(0x0c10, 0x0000) }, /* Broadcom BCM20702A0 */ { USB_DEVICE(0x0489, 0xe042) }, { USB_DEVICE(0x413c, 0x8197) }, /* Foxconn - Hon Hai */ { USB_DEVICE(0x0489, 0xe033) }, /*Broadcom devices with vendor specific id */ { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, btusb_table); static struct usb_device_id blacklist_table[] = { /* CSR BlueCore devices */ { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, /* Broadcom BCM2033 without firmware */ { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, /* Atheros 3011 with sflash firmware */ { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, /* Atheros AR9285 Malbec with sflash firmware */ { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, /* Atheros 3012 with sflash firmware */ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, /* Broadcom BCM2035 */ { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, /* Broadcom BCM2045 */ { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, /* IBM/Lenovo ThinkPad with Broadcom chip */ { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, /* HP laptop with Broadcom chip */ { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, /* Dell laptop with Broadcom chip */ { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, /* Dell Wireless 370 and 410 devices */ { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, /* Belkin F8T012 and F8T013 devices */ { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, /* Asus WL-BTD202 device */ { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, /* Kensington Bluetooth USB adapter */ { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, /* RTX Telecom based adapters with buggy SCO support */ { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, /* CONWISE Technology based adapters with buggy SCO support */ { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, /* Digianswer devices */ { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, /* CSR BlueCore Bluetooth Sniffer */ { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, /* Frontline ComProbe Bluetooth Sniffer */ { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, { } /* Terminating entry */ }; #define BTUSB_MAX_ISOC_FRAMES 10 #define BTUSB_INTR_RUNNING 0 #define BTUSB_BULK_RUNNING 1 #define BTUSB_ISOC_RUNNING 2 #define BTUSB_SUSPENDING 3 #define BTUSB_DID_ISO_RESUME 4 struct btusb_data { struct hci_dev *hdev; struct usb_device *udev; struct usb_interface *intf; struct usb_interface *isoc; spinlock_t lock; unsigned long flags; struct work_struct work; struct work_struct waker; struct usb_anchor tx_anchor; struct usb_anchor intr_anchor; struct usb_anchor bulk_anchor; struct usb_anchor isoc_anchor; struct usb_anchor deferred; int tx_in_flight; spinlock_t txlock; struct usb_endpoint_descriptor *intr_ep; struct usb_endpoint_descriptor *bulk_tx_ep; struct usb_endpoint_descriptor *bulk_rx_ep; struct usb_endpoint_descriptor *isoc_tx_ep; struct usb_endpoint_descriptor *isoc_rx_ep; __u8 cmdreq_type; unsigned int sco_num; int isoc_altsetting; int suspend_count; }; static int inc_tx(struct btusb_data *data) { unsigned long flags; int rv; spin_lock_irqsave(&data->txlock, flags); rv = test_bit(BTUSB_SUSPENDING, &data->flags); if (!rv) data->tx_in_flight++; spin_unlock_irqrestore(&data->txlock, flags); return rv; } static void btusb_intr_complete(struct urb *urb) { struct hci_dev *hdev = urb->context; struct btusb_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) return; if (urb->status == 0) { hdev->stat.byte_rx += urb->actual_length; if (hci_recv_fragment(hdev, HCI_EVENT_PKT, urb->transfer_buffer, urb->actual_length) < 0) { BT_ERR("%s corrupted event packet", hdev->name); hdev->stat.err_rx++; } } if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) return; usb_mark_last_busy(data->udev); usb_anchor_urb(urb, &data->intr_anchor); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { /* -EPERM: urb is being killed; * -ENODEV: device got disconnected */ if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p failed to resubmit (%d)", hdev->name, urb, -err); usb_unanchor_urb(urb); } } static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) { struct btusb_data *data = hci_get_drvdata(hdev); struct urb *urb; unsigned char *buf; unsigned int pipe; int err, size; BT_DBG("%s", hdev->name); if (!data->intr_ep) return -ENODEV; urb = usb_alloc_urb(0, mem_flags); if (!urb) return -ENOMEM; size = le16_to_cpu(data->intr_ep->wMaxPacketSize); buf = kmalloc(size, mem_flags); if (!buf) { usb_free_urb(urb); return -ENOMEM; } pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_intr_complete, hdev, data->intr_ep->bInterval); urb->transfer_flags |= URB_FREE_BUFFER; usb_anchor_urb(urb, &data->intr_anchor); err = usb_submit_urb(urb, mem_flags); if (err < 0) { if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p submission failed (%d)", hdev->name, urb, -err); usb_unanchor_urb(urb); } usb_free_urb(urb); return err; } static void btusb_bulk_complete(struct urb *urb) { struct hci_dev *hdev = urb->context; struct btusb_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) return; if (urb->status == 0) { hdev->stat.byte_rx += urb->actual_length; if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, urb->transfer_buffer, urb->actual_length) < 0) { BT_ERR("%s corrupted ACL packet", hdev->name); hdev->stat.err_rx++; } } if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) return; usb_anchor_urb(urb, &data->bulk_anchor); usb_mark_last_busy(data->udev); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { /* -EPERM: urb is being killed; * -ENODEV: device got disconnected */ if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p failed to resubmit (%d)", hdev->name, urb, -err); usb_unanchor_urb(urb); } } static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) { struct btusb_data *data = hci_get_drvdata(hdev); struct urb *urb; unsigned char *buf; unsigned int pipe; int err, size = HCI_MAX_FRAME_SIZE; BT_DBG("%s", hdev->name); if (!data->bulk_rx_ep) return -ENODEV; urb = usb_alloc_urb(0, mem_flags); if (!urb) return -ENOMEM; buf = kmalloc(size, mem_flags); if (!buf) { usb_free_urb(urb); return -ENOMEM; } pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, btusb_bulk_complete, hdev); urb->transfer_flags |= URB_FREE_BUFFER; usb_mark_last_busy(data->udev); usb_anchor_urb(urb, &data->bulk_anchor); err = usb_submit_urb(urb, mem_flags); if (err < 0) { if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p submission failed (%d)", hdev->name, urb, -err); usb_unanchor_urb(urb); } usb_free_urb(urb); return err; } static void btusb_isoc_complete(struct urb *urb) { struct hci_dev *hdev = urb->context; struct btusb_data *data = hci_get_drvdata(hdev); int i, err; BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) return; if (urb->status == 0) { for (i = 0; i < urb->number_of_packets; i++) { unsigned int offset = urb->iso_frame_desc[i].offset; unsigned int length = urb->iso_frame_desc[i].actual_length; if (urb->iso_frame_desc[i].status) continue; hdev->stat.byte_rx += length; if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, urb->transfer_buffer + offset, length) < 0) { BT_ERR("%s corrupted SCO packet", hdev->name); hdev->stat.err_rx++; } } } if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) return; usb_anchor_urb(urb, &data->isoc_anchor); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { /* -EPERM: urb is being killed; * -ENODEV: device got disconnected */ if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p failed to resubmit (%d)", hdev->name, urb, -err); usb_unanchor_urb(urb); } } static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) { int i, offset = 0; BT_DBG("len %d mtu %d", len, mtu); for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; i++, offset += mtu, len -= mtu) { urb->iso_frame_desc[i].offset = offset; urb->iso_frame_desc[i].length = mtu; } if (len && i < BTUSB_MAX_ISOC_FRAMES) { urb->iso_frame_desc[i].offset = offset; urb->iso_frame_desc[i].length = len; i++; } urb->number_of_packets = i; } static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) { struct btusb_data *data = hci_get_drvdata(hdev); struct urb *urb; unsigned char *buf; unsigned int pipe; int err, size; BT_DBG("%s", hdev->name); if (!data->isoc_rx_ep) return -ENODEV; urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); if (!urb) return -ENOMEM; size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * BTUSB_MAX_ISOC_FRAMES; buf = kmalloc(size, mem_flags); if (!buf) { usb_free_urb(urb); return -ENOMEM; } pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, hdev, data->isoc_rx_ep->bInterval); urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; __fill_isoc_descriptor(urb, size, le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); usb_anchor_urb(urb, &data->isoc_anchor); err = usb_submit_urb(urb, mem_flags); if (err < 0) { if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p submission failed (%d)", hdev->name, urb, -err); usb_unanchor_urb(urb); } usb_free_urb(urb); return err; } static void btusb_tx_complete(struct urb *urb) { struct sk_buff *skb = urb->context; struct hci_dev *hdev = (struct hci_dev *) skb->dev; struct btusb_data *data = hci_get_drvdata(hdev); BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) goto done; if (!urb->status) hdev->stat.byte_tx += urb->transfer_buffer_length; else hdev->stat.err_tx++; done: spin_lock(&data->txlock); data->tx_in_flight--; spin_unlock(&data->txlock); kfree(urb->setup_packet); kfree_skb(skb); } static void btusb_isoc_tx_complete(struct urb *urb) { struct sk_buff *skb = urb->context; struct hci_dev *hdev = (struct hci_dev *) skb->dev; BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, urb->actual_length); if (!test_bit(HCI_RUNNING, &hdev->flags)) goto done; if (!urb->status) hdev->stat.byte_tx += urb->transfer_buffer_length; else hdev->stat.err_tx++; done: kfree(urb->setup_packet); kfree_skb(skb); } static int btusb_open(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s", hdev->name); err = usb_autopm_get_interface(data->intf); if (err < 0) return err; data->intf->needs_remote_wakeup = 1; if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) goto done; if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) goto done; err = btusb_submit_intr_urb(hdev, GFP_KERNEL); if (err < 0) goto failed; err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); if (err < 0) { usb_kill_anchored_urbs(&data->intr_anchor); goto failed; } set_bit(BTUSB_BULK_RUNNING, &data->flags); btusb_submit_bulk_urb(hdev, GFP_KERNEL); done: usb_autopm_put_interface(data->intf); return 0; failed: clear_bit(BTUSB_INTR_RUNNING, &data->flags); clear_bit(HCI_RUNNING, &hdev->flags); usb_autopm_put_interface(data->intf); return err; } static void btusb_stop_traffic(struct btusb_data *data) { usb_kill_anchored_urbs(&data->intr_anchor); usb_kill_anchored_urbs(&data->bulk_anchor); usb_kill_anchored_urbs(&data->isoc_anchor); } static int btusb_close(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s", hdev->name); if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) return 0; cancel_work_sync(&data->work); cancel_work_sync(&data->waker); clear_bit(BTUSB_ISOC_RUNNING, &data->flags); clear_bit(BTUSB_BULK_RUNNING, &data->flags); clear_bit(BTUSB_INTR_RUNNING, &data->flags); btusb_stop_traffic(data); err = usb_autopm_get_interface(data->intf); if (err < 0) goto failed; data->intf->needs_remote_wakeup = 0; usb_autopm_put_interface(data->intf); failed: usb_scuttle_anchored_urbs(&data->deferred); return 0; } static int btusb_flush(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); BT_DBG("%s", hdev->name); usb_kill_anchored_urbs(&data->tx_anchor); return 0; } static int btusb_send_frame(struct sk_buff *skb) { struct hci_dev *hdev = (struct hci_dev *) skb->dev; struct btusb_data *data = hci_get_drvdata(hdev); struct usb_ctrlrequest *dr; struct urb *urb; unsigned int pipe; int err; BT_DBG("%s", hdev->name); if (!test_bit(HCI_RUNNING, &hdev->flags)) return -EBUSY; switch (bt_cb(skb)->pkt_type) { case HCI_COMMAND_PKT: urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) return -ENOMEM; dr = kmalloc(sizeof(*dr), GFP_ATOMIC); if (!dr) { usb_free_urb(urb); return -ENOMEM; } dr->bRequestType = data->cmdreq_type; dr->bRequest = 0; dr->wIndex = 0; dr->wValue = 0; dr->wLength = __cpu_to_le16(skb->len); pipe = usb_sndctrlpipe(data->udev, 0x00); usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, skb->data, skb->len, btusb_tx_complete, skb); hdev->stat.cmd_tx++; break; case HCI_ACLDATA_PKT: if (!data->bulk_tx_ep) return -ENODEV; urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) return -ENOMEM; pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len, btusb_tx_complete, skb); hdev->stat.acl_tx++; break; case HCI_SCODATA_PKT: if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) return -ENODEV; urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); if (!urb) return -ENOMEM; pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); usb_fill_int_urb(urb, data->udev, pipe, skb->data, skb->len, btusb_isoc_tx_complete, skb, data->isoc_tx_ep->bInterval); urb->transfer_flags = URB_ISO_ASAP; __fill_isoc_descriptor(urb, skb->len, le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); hdev->stat.sco_tx++; goto skip_waking; default: return -EILSEQ; } err = inc_tx(data); if (err) { usb_anchor_urb(urb, &data->deferred); schedule_work(&data->waker); err = 0; goto done; } skip_waking: usb_anchor_urb(urb, &data->tx_anchor); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { if (err != -EPERM && err != -ENODEV) BT_ERR("%s urb %p submission failed (%d)", hdev->name, urb, -err); kfree(urb->setup_packet); usb_unanchor_urb(urb); } else { usb_mark_last_busy(data->udev); } done: usb_free_urb(urb); return err; } static void btusb_notify(struct hci_dev *hdev, unsigned int evt) { struct btusb_data *data = hci_get_drvdata(hdev); BT_DBG("%s evt %d", hdev->name, evt); if (hdev->conn_hash.sco_num != data->sco_num) { data->sco_num = hdev->conn_hash.sco_num; schedule_work(&data->work); } } static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) { struct btusb_data *data = hci_get_drvdata(hdev); struct usb_interface *intf = data->isoc; struct usb_endpoint_descriptor *ep_desc; int i, err; if (!data->isoc) return -ENODEV; err = usb_set_interface(data->udev, 1, altsetting); if (err < 0) { BT_ERR("%s setting interface failed (%d)", hdev->name, -err); return err; } data->isoc_altsetting = altsetting; data->isoc_tx_ep = NULL; data->isoc_rx_ep = NULL; for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { ep_desc = &intf->cur_altsetting->endpoint[i].desc; if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { data->isoc_tx_ep = ep_desc; continue; } if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { data->isoc_rx_ep = ep_desc; continue; } } if (!data->isoc_tx_ep || !data->isoc_rx_ep) { BT_ERR("%s invalid SCO descriptors", hdev->name); return -ENODEV; } return 0; } static void btusb_work(struct work_struct *work) { struct btusb_data *data = container_of(work, struct btusb_data, work); struct hci_dev *hdev = data->hdev; int err; if (hdev->conn_hash.sco_num > 0) { if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); if (err < 0) { clear_bit(BTUSB_ISOC_RUNNING, &data->flags); usb_kill_anchored_urbs(&data->isoc_anchor); return; } set_bit(BTUSB_DID_ISO_RESUME, &data->flags); } if (data->isoc_altsetting != 2) { clear_bit(BTUSB_ISOC_RUNNING, &data->flags); usb_kill_anchored_urbs(&data->isoc_anchor); if (__set_isoc_interface(hdev, 2) < 0) return; } if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) clear_bit(BTUSB_ISOC_RUNNING, &data->flags); else btusb_submit_isoc_urb(hdev, GFP_KERNEL); } } else { clear_bit(BTUSB_ISOC_RUNNING, &data->flags); usb_kill_anchored_urbs(&data->isoc_anchor); __set_isoc_interface(hdev, 0); if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); } } static void btusb_waker(struct work_struct *work) { struct btusb_data *data = container_of(work, struct btusb_data, waker); int err; err = usb_autopm_get_interface(data->intf); if (err < 0) return; usb_autopm_put_interface(data->intf); } static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_endpoint_descriptor *ep_desc; struct btusb_data *data; struct hci_dev *hdev; int i, err; BT_DBG("intf %p id %p", intf, id); /* interface numbers are hardcoded in the spec */ if (intf->cur_altsetting->desc.bInterfaceNumber != 0) return -ENODEV; if (!id->driver_info) { const struct usb_device_id *match; match = usb_match_id(intf, blacklist_table); if (match) id = match; } if (id->driver_info == BTUSB_IGNORE) return -ENODEV; if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) return -ENODEV; if (ignore_csr && id->driver_info & BTUSB_CSR) return -ENODEV; if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) return -ENODEV; if (id->driver_info & BTUSB_ATH3012) { struct usb_device *udev = interface_to_usbdev(intf); /* Old firmware would otherwise let ath3k driver load * patch and sysconfig files */ if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) return -ENODEV; } data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { ep_desc = &intf->cur_altsetting->endpoint[i].desc; if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { data->intr_ep = ep_desc; continue; } if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { data->bulk_tx_ep = ep_desc; continue; } if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { data->bulk_rx_ep = ep_desc; continue; } } if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { kfree(data); return -ENODEV; } data->cmdreq_type = USB_TYPE_CLASS; data->udev = interface_to_usbdev(intf); data->intf = intf; spin_lock_init(&data->lock); INIT_WORK(&data->work, btusb_work); INIT_WORK(&data->waker, btusb_waker); spin_lock_init(&data->txlock); init_usb_anchor(&data->tx_anchor); init_usb_anchor(&data->intr_anchor); init_usb_anchor(&data->bulk_anchor); init_usb_anchor(&data->isoc_anchor); init_usb_anchor(&data->deferred); hdev = hci_alloc_dev(); if (!hdev) { kfree(data); return -ENOMEM; } hdev->bus = HCI_USB; hci_set_drvdata(hdev, data); data->hdev = hdev; SET_HCIDEV_DEV(hdev, &intf->dev); hdev->open = btusb_open; hdev->close = btusb_close; hdev->flush = btusb_flush; hdev->send = btusb_send_frame; hdev->notify = btusb_notify; /* Interface numbers are hardcoded in the specification */ data->isoc = usb_ifnum_to_if(data->udev, 1); if (!reset) set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { if (!disable_scofix) set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); } if (id->driver_info & BTUSB_BROKEN_ISOC) data->isoc = NULL; if (id->driver_info & BTUSB_DIGIANSWER) { data->cmdreq_type = USB_TYPE_VENDOR; set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); } if (id->driver_info & BTUSB_CSR) { struct usb_device *udev = data->udev; /* Old firmware would otherwise execute USB reset */ if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); } if (id->driver_info & BTUSB_SNIFFER) { struct usb_device *udev = data->udev; /* New sniffer firmware has crippled HCI interface */ if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); data->isoc = NULL; } if (id->driver_info & BTUSB_BCM92035) { unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; struct sk_buff *skb; skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); if (skb) { memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); skb_queue_tail(&hdev->driver_init, skb); } } if (data->isoc) { err = usb_driver_claim_interface(&btusb_driver, data->isoc, data); if (err < 0) { hci_free_dev(hdev); kfree(data); return err; } } err = hci_register_dev(hdev); if (err < 0) { hci_free_dev(hdev); kfree(data); return err; } usb_set_intfdata(intf, data); return 0; } static void btusb_disconnect(struct usb_interface *intf) { struct btusb_data *data = usb_get_intfdata(intf); struct hci_dev *hdev; BT_DBG("intf %p", intf); if (!data) return; hdev = data->hdev; usb_set_intfdata(data->intf, NULL); if (data->isoc) usb_set_intfdata(data->isoc, NULL); hci_unregister_dev(hdev); if (intf == data->isoc) usb_driver_release_interface(&btusb_driver, data->intf); else if (data->isoc) usb_driver_release_interface(&btusb_driver, data->isoc); hci_free_dev(hdev); kfree(data); } #ifdef CONFIG_PM static int btusb_suspend(struct usb_interface *intf, pm_message_t message) { struct btusb_data *data = usb_get_intfdata(intf); BT_DBG("intf %p", intf); if (data->suspend_count++) return 0; spin_lock_irq(&data->txlock); if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { set_bit(BTUSB_SUSPENDING, &data->flags); spin_unlock_irq(&data->txlock); } else { spin_unlock_irq(&data->txlock); data->suspend_count--; return -EBUSY; } cancel_work_sync(&data->work); btusb_stop_traffic(data); usb_kill_anchored_urbs(&data->tx_anchor); return 0; } static void play_deferred(struct btusb_data *data) { struct urb *urb; int err; while ((urb = usb_get_from_anchor(&data->deferred))) { err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) break; data->tx_in_flight++; } usb_scuttle_anchored_urbs(&data->deferred); } static int btusb_resume(struct usb_interface *intf) { struct btusb_data *data = usb_get_intfdata(intf); struct hci_dev *hdev = data->hdev; int err = 0; BT_DBG("intf %p", intf); if (--data->suspend_count) return 0; if (!test_bit(HCI_RUNNING, &hdev->flags)) goto done; if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { err = btusb_submit_intr_urb(hdev, GFP_NOIO); if (err < 0) { clear_bit(BTUSB_INTR_RUNNING, &data->flags); goto failed; } } if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { err = btusb_submit_bulk_urb(hdev, GFP_NOIO); if (err < 0) { clear_bit(BTUSB_BULK_RUNNING, &data->flags); goto failed; } btusb_submit_bulk_urb(hdev, GFP_NOIO); } if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) clear_bit(BTUSB_ISOC_RUNNING, &data->flags); else btusb_submit_isoc_urb(hdev, GFP_NOIO); } spin_lock_irq(&data->txlock); play_deferred(data); clear_bit(BTUSB_SUSPENDING, &data->flags); spin_unlock_irq(&data->txlock); schedule_work(&data->work); return 0; failed: usb_scuttle_anchored_urbs(&data->deferred); done: spin_lock_irq(&data->txlock); clear_bit(BTUSB_SUSPENDING, &data->flags); spin_unlock_irq(&data->txlock); return err; } #endif static struct usb_driver btusb_driver = { .name = "btusb", .probe = btusb_probe, .disconnect = btusb_disconnect, #ifdef CONFIG_PM .suspend = btusb_suspend, .resume = btusb_resume, #endif .id_table = btusb_table, .supports_autosuspend = 1, }; module_usb_driver(btusb_driver); module_param(ignore_dga, bool, 0644); MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); module_param(ignore_csr, bool, 0644); MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); module_param(ignore_sniffer, bool, 0644); MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); module_param(disable_scofix, bool, 0644); MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); module_param(force_scofix, bool, 0644); MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); module_param(reset, bool, 0644); MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); MODULE_AUTHOR("Marcel Holtmann "); MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL");