| /* |
| * |
| * Generic Bluetooth USB driver |
| * |
| * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/types.h> |
| #include <linux/sched.h> |
| #include <linux/errno.h> |
| #include <linux/skbuff.h> |
| |
| #include <linux/usb.h> |
| |
| #include <net/bluetooth/bluetooth.h> |
| #include <net/bluetooth/hci_core.h> |
| |
| #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) }, |
| |
| /* Broadcom SoftSailing reporting vendor specific */ |
| { USB_DEVICE(0x05ac, 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(0x0a5c, 0x21e3) }, |
| { USB_DEVICE(0x413c, 0x8197) }, |
| |
| { } /* 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 }, |
| |
| /* 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 }, |
| |
| /* 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| 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 = hdev->driver_data; |
| |
| 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 = hdev->driver_data; |
| 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); |
| |
| if (skb->priority >= HCI_PRIO_MAX - 1) |
| urb->transfer_flags = URB_ISO_ASAP; |
| |
| 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_destruct(struct hci_dev *hdev) |
| { |
| struct btusb_data *data = hdev->driver_data; |
| |
| BT_DBG("%s", hdev->name); |
| |
| kfree(data); |
| } |
| |
| static void btusb_notify(struct hci_dev *hdev, unsigned int evt) |
| { |
| struct btusb_data *data = hdev->driver_data; |
| |
| 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 = hdev->driver_data; |
| 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; |
| hdev->driver_data = 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->destruct = btusb_destruct; |
| hdev->notify = btusb_notify; |
| |
| hdev->owner = THIS_MODULE; |
| |
| /* 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; |
| |
| __hci_dev_hold(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_dev_put(hdev); |
| |
| hci_free_dev(hdev); |
| } |
| |
| #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 <marcel@holtmann.org>"); |
| MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); |
| MODULE_VERSION(VERSION); |
| MODULE_LICENSE("GPL"); |