| /* |
| HCI USB driver for Linux Bluetooth protocol stack (BlueZ) |
| Copyright (C) 2000-2001 Qualcomm Incorporated |
| Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| |
| Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License version 2 as |
| published by the Free Software Foundation; |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| SOFTWARE IS DISCLAIMED. |
| */ |
| |
| /* |
| * Bluetooth HCI USB driver. |
| * Based on original USB Bluetooth driver for Linux kernel |
| * Copyright (c) 2000 Greg Kroah-Hartman <greg@kroah.com> |
| * Copyright (c) 2000 Mark Douglas Corner <mcorner@umich.edu> |
| * |
| */ |
| |
| #include <linux/module.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/sched.h> |
| #include <linux/unistd.h> |
| #include <linux/types.h> |
| #include <linux/interrupt.h> |
| #include <linux/moduleparam.h> |
| |
| #include <linux/slab.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/skbuff.h> |
| |
| #include <linux/usb.h> |
| |
| #include <net/bluetooth/bluetooth.h> |
| #include <net/bluetooth/hci_core.h> |
| |
| #include "hci_usb.h" |
| |
| #ifndef CONFIG_BT_HCIUSB_DEBUG |
| #undef BT_DBG |
| #define BT_DBG(D...) |
| #endif |
| |
| #ifndef CONFIG_BT_HCIUSB_ZERO_PACKET |
| #undef URB_ZERO_PACKET |
| #define URB_ZERO_PACKET 0 |
| #endif |
| |
| static int ignore = 0; |
| static int ignore_dga = 0; |
| static int ignore_csr = 0; |
| static int ignore_sniffer = 0; |
| static int disable_scofix = 0; |
| static int force_scofix = 0; |
| static int reset = 0; |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| static int isoc = 2; |
| #endif |
| |
| #define VERSION "2.9" |
| |
| static struct usb_driver hci_usb_driver; |
| |
| static struct usb_device_id bluetooth_ids[] = { |
| /* Generic Bluetooth USB device */ |
| { USB_DEVICE_INFO(HCI_DEV_CLASS, HCI_DEV_SUBCLASS, HCI_DEV_PROTOCOL) }, |
| |
| /* 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) }, |
| |
| { } /* Terminating entry */ |
| }; |
| |
| MODULE_DEVICE_TABLE (usb, bluetooth_ids); |
| |
| static struct usb_device_id blacklist_ids[] = { |
| /* CSR BlueCore devices */ |
| { USB_DEVICE(0x0a12, 0x0001), .driver_info = HCI_CSR }, |
| |
| /* Broadcom BCM2033 without firmware */ |
| { USB_DEVICE(0x0a5c, 0x2033), .driver_info = HCI_IGNORE }, |
| |
| /* Broadcom BCM2035 */ |
| { USB_DEVICE(0x0a5c, 0x200a), .driver_info = HCI_RESET | HCI_BROKEN_ISOC }, |
| { USB_DEVICE(0x0a5c, 0x2009), .driver_info = HCI_BCM92035 }, |
| |
| /* IBM/Lenovo ThinkPad with Broadcom chip */ |
| { USB_DEVICE(0x0a5c, 0x201e), .driver_info = HCI_WRONG_SCO_MTU }, |
| |
| /* Microsoft Wireless Transceiver for Bluetooth 2.0 */ |
| { USB_DEVICE(0x045e, 0x009c), .driver_info = HCI_RESET }, |
| |
| /* Kensington Bluetooth USB adapter */ |
| { USB_DEVICE(0x047d, 0x105d), .driver_info = HCI_RESET }, |
| |
| /* ISSC Bluetooth Adapter v3.1 */ |
| { USB_DEVICE(0x1131, 0x1001), .driver_info = HCI_RESET }, |
| |
| /* RTX Telecom based adapter with buggy SCO support */ |
| { USB_DEVICE(0x0400, 0x0807), .driver_info = HCI_BROKEN_ISOC }, |
| |
| /* Belkin F8T012 */ |
| { USB_DEVICE(0x050d, 0x0012), .driver_info = HCI_WRONG_SCO_MTU }, |
| |
| /* Digianswer devices */ |
| { USB_DEVICE(0x08fd, 0x0001), .driver_info = HCI_DIGIANSWER }, |
| { USB_DEVICE(0x08fd, 0x0002), .driver_info = HCI_IGNORE }, |
| |
| /* CSR BlueCore Bluetooth Sniffer */ |
| { USB_DEVICE(0x0a12, 0x0002), .driver_info = HCI_SNIFFER }, |
| |
| /* Frontline ComProbe Bluetooth Sniffer */ |
| { USB_DEVICE(0x16d3, 0x0002), .driver_info = HCI_SNIFFER }, |
| |
| { } /* Terminating entry */ |
| }; |
| |
| static struct _urb *_urb_alloc(int isoc, gfp_t gfp) |
| { |
| struct _urb *_urb = kmalloc(sizeof(struct _urb) + |
| sizeof(struct usb_iso_packet_descriptor) * isoc, gfp); |
| if (_urb) { |
| memset(_urb, 0, sizeof(*_urb)); |
| usb_init_urb(&_urb->urb); |
| } |
| return _urb; |
| } |
| |
| static struct _urb *_urb_dequeue(struct _urb_queue *q) |
| { |
| struct _urb *_urb = NULL; |
| unsigned long flags; |
| spin_lock_irqsave(&q->lock, flags); |
| { |
| struct list_head *head = &q->head; |
| struct list_head *next = head->next; |
| if (next != head) { |
| _urb = list_entry(next, struct _urb, list); |
| list_del(next); _urb->queue = NULL; |
| } |
| } |
| spin_unlock_irqrestore(&q->lock, flags); |
| return _urb; |
| } |
| |
| static void hci_usb_rx_complete(struct urb *urb, struct pt_regs *regs); |
| static void hci_usb_tx_complete(struct urb *urb, struct pt_regs *regs); |
| |
| #define __pending_tx(husb, type) (&husb->pending_tx[type-1]) |
| #define __pending_q(husb, type) (&husb->pending_q[type-1]) |
| #define __completed_q(husb, type) (&husb->completed_q[type-1]) |
| #define __transmit_q(husb, type) (&husb->transmit_q[type-1]) |
| #define __reassembly(husb, type) (husb->reassembly[type-1]) |
| |
| static inline struct _urb *__get_completed(struct hci_usb *husb, int type) |
| { |
| return _urb_dequeue(__completed_q(husb, type)); |
| } |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| static void __fill_isoc_desc(struct urb *urb, int len, int mtu) |
| { |
| int offset = 0, i; |
| |
| BT_DBG("len %d mtu %d", len, mtu); |
| |
| for (i=0; i < HCI_MAX_ISOC_FRAMES && len >= mtu; i++, offset += mtu, len -= mtu) { |
| urb->iso_frame_desc[i].offset = offset; |
| urb->iso_frame_desc[i].length = mtu; |
| BT_DBG("desc %d offset %d len %d", i, offset, mtu); |
| } |
| if (len && i < HCI_MAX_ISOC_FRAMES) { |
| urb->iso_frame_desc[i].offset = offset; |
| urb->iso_frame_desc[i].length = len; |
| BT_DBG("desc %d offset %d len %d", i, offset, len); |
| i++; |
| } |
| urb->number_of_packets = i; |
| } |
| #endif |
| |
| static int hci_usb_intr_rx_submit(struct hci_usb *husb) |
| { |
| struct _urb *_urb; |
| struct urb *urb; |
| int err, pipe, interval, size; |
| void *buf; |
| |
| BT_DBG("%s", husb->hdev->name); |
| |
| size = le16_to_cpu(husb->intr_in_ep->desc.wMaxPacketSize); |
| |
| buf = kmalloc(size, GFP_ATOMIC); |
| if (!buf) |
| return -ENOMEM; |
| |
| _urb = _urb_alloc(0, GFP_ATOMIC); |
| if (!_urb) { |
| kfree(buf); |
| return -ENOMEM; |
| } |
| _urb->type = HCI_EVENT_PKT; |
| _urb_queue_tail(__pending_q(husb, _urb->type), _urb); |
| |
| urb = &_urb->urb; |
| pipe = usb_rcvintpipe(husb->udev, husb->intr_in_ep->desc.bEndpointAddress); |
| interval = husb->intr_in_ep->desc.bInterval; |
| usb_fill_int_urb(urb, husb->udev, pipe, buf, size, hci_usb_rx_complete, husb, interval); |
| |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err) { |
| BT_ERR("%s intr rx submit failed urb %p err %d", |
| husb->hdev->name, urb, err); |
| _urb_unlink(_urb); |
| _urb_free(_urb); |
| kfree(buf); |
| } |
| return err; |
| } |
| |
| static int hci_usb_bulk_rx_submit(struct hci_usb *husb) |
| { |
| struct _urb *_urb; |
| struct urb *urb; |
| int err, pipe, size = HCI_MAX_FRAME_SIZE; |
| void *buf; |
| |
| buf = kmalloc(size, GFP_ATOMIC); |
| if (!buf) |
| return -ENOMEM; |
| |
| _urb = _urb_alloc(0, GFP_ATOMIC); |
| if (!_urb) { |
| kfree(buf); |
| return -ENOMEM; |
| } |
| _urb->type = HCI_ACLDATA_PKT; |
| _urb_queue_tail(__pending_q(husb, _urb->type), _urb); |
| |
| urb = &_urb->urb; |
| pipe = usb_rcvbulkpipe(husb->udev, husb->bulk_in_ep->desc.bEndpointAddress); |
| usb_fill_bulk_urb(urb, husb->udev, pipe, buf, size, hci_usb_rx_complete, husb); |
| urb->transfer_flags = 0; |
| |
| BT_DBG("%s urb %p", husb->hdev->name, urb); |
| |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err) { |
| BT_ERR("%s bulk rx submit failed urb %p err %d", |
| husb->hdev->name, urb, err); |
| _urb_unlink(_urb); |
| _urb_free(_urb); |
| kfree(buf); |
| } |
| return err; |
| } |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| static int hci_usb_isoc_rx_submit(struct hci_usb *husb) |
| { |
| struct _urb *_urb; |
| struct urb *urb; |
| int err, mtu, size; |
| void *buf; |
| |
| mtu = le16_to_cpu(husb->isoc_in_ep->desc.wMaxPacketSize); |
| size = mtu * HCI_MAX_ISOC_FRAMES; |
| |
| buf = kmalloc(size, GFP_ATOMIC); |
| if (!buf) |
| return -ENOMEM; |
| |
| _urb = _urb_alloc(HCI_MAX_ISOC_FRAMES, GFP_ATOMIC); |
| if (!_urb) { |
| kfree(buf); |
| return -ENOMEM; |
| } |
| _urb->type = HCI_SCODATA_PKT; |
| _urb_queue_tail(__pending_q(husb, _urb->type), _urb); |
| |
| urb = &_urb->urb; |
| |
| urb->context = husb; |
| urb->dev = husb->udev; |
| urb->pipe = usb_rcvisocpipe(husb->udev, husb->isoc_in_ep->desc.bEndpointAddress); |
| urb->complete = hci_usb_rx_complete; |
| |
| urb->interval = husb->isoc_in_ep->desc.bInterval; |
| |
| urb->transfer_buffer_length = size; |
| urb->transfer_buffer = buf; |
| urb->transfer_flags = URB_ISO_ASAP; |
| |
| __fill_isoc_desc(urb, size, mtu); |
| |
| BT_DBG("%s urb %p", husb->hdev->name, urb); |
| |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err) { |
| BT_ERR("%s isoc rx submit failed urb %p err %d", |
| husb->hdev->name, urb, err); |
| _urb_unlink(_urb); |
| _urb_free(_urb); |
| kfree(buf); |
| } |
| return err; |
| } |
| #endif |
| |
| /* Initialize device */ |
| static int hci_usb_open(struct hci_dev *hdev) |
| { |
| struct hci_usb *husb = (struct hci_usb *) hdev->driver_data; |
| int i, err; |
| unsigned long flags; |
| |
| BT_DBG("%s", hdev->name); |
| |
| if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) |
| return 0; |
| |
| write_lock_irqsave(&husb->completion_lock, flags); |
| |
| err = hci_usb_intr_rx_submit(husb); |
| if (!err) { |
| for (i = 0; i < HCI_MAX_BULK_RX; i++) |
| hci_usb_bulk_rx_submit(husb); |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| if (husb->isoc_iface) |
| for (i = 0; i < HCI_MAX_ISOC_RX; i++) |
| hci_usb_isoc_rx_submit(husb); |
| #endif |
| } else { |
| clear_bit(HCI_RUNNING, &hdev->flags); |
| } |
| |
| write_unlock_irqrestore(&husb->completion_lock, flags); |
| return err; |
| } |
| |
| /* Reset device */ |
| static int hci_usb_flush(struct hci_dev *hdev) |
| { |
| struct hci_usb *husb = (struct hci_usb *) hdev->driver_data; |
| int i; |
| |
| BT_DBG("%s", hdev->name); |
| |
| for (i = 0; i < 4; i++) |
| skb_queue_purge(&husb->transmit_q[i]); |
| return 0; |
| } |
| |
| static void hci_usb_unlink_urbs(struct hci_usb *husb) |
| { |
| int i; |
| |
| BT_DBG("%s", husb->hdev->name); |
| |
| for (i = 0; i < 4; i++) { |
| struct _urb *_urb; |
| struct urb *urb; |
| |
| /* Kill pending requests */ |
| while ((_urb = _urb_dequeue(&husb->pending_q[i]))) { |
| urb = &_urb->urb; |
| BT_DBG("%s unlinking _urb %p type %d urb %p", |
| husb->hdev->name, _urb, _urb->type, urb); |
| usb_kill_urb(urb); |
| _urb_queue_tail(__completed_q(husb, _urb->type), _urb); |
| } |
| |
| /* Release completed requests */ |
| while ((_urb = _urb_dequeue(&husb->completed_q[i]))) { |
| urb = &_urb->urb; |
| BT_DBG("%s freeing _urb %p type %d urb %p", |
| husb->hdev->name, _urb, _urb->type, urb); |
| kfree(urb->setup_packet); |
| kfree(urb->transfer_buffer); |
| _urb_free(_urb); |
| } |
| |
| /* Release reassembly buffers */ |
| if (husb->reassembly[i]) { |
| kfree_skb(husb->reassembly[i]); |
| husb->reassembly[i] = NULL; |
| } |
| } |
| } |
| |
| /* Close device */ |
| static int hci_usb_close(struct hci_dev *hdev) |
| { |
| struct hci_usb *husb = (struct hci_usb *) hdev->driver_data; |
| unsigned long flags; |
| |
| if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) |
| return 0; |
| |
| BT_DBG("%s", hdev->name); |
| |
| /* Synchronize with completion handlers */ |
| write_lock_irqsave(&husb->completion_lock, flags); |
| write_unlock_irqrestore(&husb->completion_lock, flags); |
| |
| hci_usb_unlink_urbs(husb); |
| hci_usb_flush(hdev); |
| return 0; |
| } |
| |
| static int __tx_submit(struct hci_usb *husb, struct _urb *_urb) |
| { |
| struct urb *urb = &_urb->urb; |
| int err; |
| |
| BT_DBG("%s urb %p type %d", husb->hdev->name, urb, _urb->type); |
| |
| _urb_queue_tail(__pending_q(husb, _urb->type), _urb); |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err) { |
| BT_ERR("%s tx submit failed urb %p type %d err %d", |
| husb->hdev->name, urb, _urb->type, err); |
| _urb_unlink(_urb); |
| _urb_queue_tail(__completed_q(husb, _urb->type), _urb); |
| } else |
| atomic_inc(__pending_tx(husb, _urb->type)); |
| |
| return err; |
| } |
| |
| static inline int hci_usb_send_ctrl(struct hci_usb *husb, struct sk_buff *skb) |
| { |
| struct _urb *_urb = __get_completed(husb, bt_cb(skb)->pkt_type); |
| struct usb_ctrlrequest *dr; |
| struct urb *urb; |
| |
| if (!_urb) { |
| _urb = _urb_alloc(0, GFP_ATOMIC); |
| if (!_urb) |
| return -ENOMEM; |
| _urb->type = bt_cb(skb)->pkt_type; |
| |
| dr = kmalloc(sizeof(*dr), GFP_ATOMIC); |
| if (!dr) { |
| _urb_free(_urb); |
| return -ENOMEM; |
| } |
| } else |
| dr = (void *) _urb->urb.setup_packet; |
| |
| dr->bRequestType = husb->ctrl_req; |
| dr->bRequest = 0; |
| dr->wIndex = 0; |
| dr->wValue = 0; |
| dr->wLength = __cpu_to_le16(skb->len); |
| |
| urb = &_urb->urb; |
| usb_fill_control_urb(urb, husb->udev, usb_sndctrlpipe(husb->udev, 0), |
| (void *) dr, skb->data, skb->len, hci_usb_tx_complete, husb); |
| |
| BT_DBG("%s skb %p len %d", husb->hdev->name, skb, skb->len); |
| |
| _urb->priv = skb; |
| return __tx_submit(husb, _urb); |
| } |
| |
| static inline int hci_usb_send_bulk(struct hci_usb *husb, struct sk_buff *skb) |
| { |
| struct _urb *_urb = __get_completed(husb, bt_cb(skb)->pkt_type); |
| struct urb *urb; |
| int pipe; |
| |
| if (!_urb) { |
| _urb = _urb_alloc(0, GFP_ATOMIC); |
| if (!_urb) |
| return -ENOMEM; |
| _urb->type = bt_cb(skb)->pkt_type; |
| } |
| |
| urb = &_urb->urb; |
| pipe = usb_sndbulkpipe(husb->udev, husb->bulk_out_ep->desc.bEndpointAddress); |
| usb_fill_bulk_urb(urb, husb->udev, pipe, skb->data, skb->len, |
| hci_usb_tx_complete, husb); |
| urb->transfer_flags = URB_ZERO_PACKET; |
| |
| BT_DBG("%s skb %p len %d", husb->hdev->name, skb, skb->len); |
| |
| _urb->priv = skb; |
| return __tx_submit(husb, _urb); |
| } |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| static inline int hci_usb_send_isoc(struct hci_usb *husb, struct sk_buff *skb) |
| { |
| struct _urb *_urb = __get_completed(husb, bt_cb(skb)->pkt_type); |
| struct urb *urb; |
| |
| if (!_urb) { |
| _urb = _urb_alloc(HCI_MAX_ISOC_FRAMES, GFP_ATOMIC); |
| if (!_urb) |
| return -ENOMEM; |
| _urb->type = bt_cb(skb)->pkt_type; |
| } |
| |
| BT_DBG("%s skb %p len %d", husb->hdev->name, skb, skb->len); |
| |
| urb = &_urb->urb; |
| |
| urb->context = husb; |
| urb->dev = husb->udev; |
| urb->pipe = usb_sndisocpipe(husb->udev, husb->isoc_out_ep->desc.bEndpointAddress); |
| urb->complete = hci_usb_tx_complete; |
| urb->transfer_flags = URB_ISO_ASAP; |
| |
| urb->interval = husb->isoc_out_ep->desc.bInterval; |
| |
| urb->transfer_buffer = skb->data; |
| urb->transfer_buffer_length = skb->len; |
| |
| __fill_isoc_desc(urb, skb->len, le16_to_cpu(husb->isoc_out_ep->desc.wMaxPacketSize)); |
| |
| _urb->priv = skb; |
| return __tx_submit(husb, _urb); |
| } |
| #endif |
| |
| static void hci_usb_tx_process(struct hci_usb *husb) |
| { |
| struct sk_buff_head *q; |
| struct sk_buff *skb; |
| |
| BT_DBG("%s", husb->hdev->name); |
| |
| do { |
| clear_bit(HCI_USB_TX_WAKEUP, &husb->state); |
| |
| /* Process command queue */ |
| q = __transmit_q(husb, HCI_COMMAND_PKT); |
| if (!atomic_read(__pending_tx(husb, HCI_COMMAND_PKT)) && |
| (skb = skb_dequeue(q))) { |
| if (hci_usb_send_ctrl(husb, skb) < 0) |
| skb_queue_head(q, skb); |
| } |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| /* Process SCO queue */ |
| q = __transmit_q(husb, HCI_SCODATA_PKT); |
| if (atomic_read(__pending_tx(husb, HCI_SCODATA_PKT)) < HCI_MAX_ISOC_TX && |
| (skb = skb_dequeue(q))) { |
| if (hci_usb_send_isoc(husb, skb) < 0) |
| skb_queue_head(q, skb); |
| } |
| #endif |
| |
| /* Process ACL queue */ |
| q = __transmit_q(husb, HCI_ACLDATA_PKT); |
| while (atomic_read(__pending_tx(husb, HCI_ACLDATA_PKT)) < HCI_MAX_BULK_TX && |
| (skb = skb_dequeue(q))) { |
| if (hci_usb_send_bulk(husb, skb) < 0) { |
| skb_queue_head(q, skb); |
| break; |
| } |
| } |
| } while(test_bit(HCI_USB_TX_WAKEUP, &husb->state)); |
| } |
| |
| static inline void hci_usb_tx_wakeup(struct hci_usb *husb) |
| { |
| /* Serialize TX queue processing to avoid data reordering */ |
| if (!test_and_set_bit(HCI_USB_TX_PROCESS, &husb->state)) { |
| hci_usb_tx_process(husb); |
| clear_bit(HCI_USB_TX_PROCESS, &husb->state); |
| } else |
| set_bit(HCI_USB_TX_WAKEUP, &husb->state); |
| } |
| |
| /* Send frames from HCI layer */ |
| static int hci_usb_send_frame(struct sk_buff *skb) |
| { |
| struct hci_dev *hdev = (struct hci_dev *) skb->dev; |
| struct hci_usb *husb; |
| |
| if (!hdev) { |
| BT_ERR("frame for uknown device (hdev=NULL)"); |
| return -ENODEV; |
| } |
| |
| if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| return -EBUSY; |
| |
| BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
| |
| husb = (struct hci_usb *) hdev->driver_data; |
| |
| switch (bt_cb(skb)->pkt_type) { |
| case HCI_COMMAND_PKT: |
| hdev->stat.cmd_tx++; |
| break; |
| |
| case HCI_ACLDATA_PKT: |
| hdev->stat.acl_tx++; |
| break; |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| case HCI_SCODATA_PKT: |
| hdev->stat.sco_tx++; |
| break; |
| #endif |
| |
| default: |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| read_lock(&husb->completion_lock); |
| |
| skb_queue_tail(__transmit_q(husb, bt_cb(skb)->pkt_type), skb); |
| hci_usb_tx_wakeup(husb); |
| |
| read_unlock(&husb->completion_lock); |
| return 0; |
| } |
| |
| static inline int __recv_frame(struct hci_usb *husb, int type, void *data, int count) |
| { |
| BT_DBG("%s type %d data %p count %d", husb->hdev->name, type, data, count); |
| |
| husb->hdev->stat.byte_rx += count; |
| |
| while (count) { |
| struct sk_buff *skb = __reassembly(husb, type); |
| struct { int expect; } *scb; |
| int len = 0; |
| |
| if (!skb) { |
| /* Start of the frame */ |
| |
| switch (type) { |
| case HCI_EVENT_PKT: |
| if (count >= HCI_EVENT_HDR_SIZE) { |
| struct hci_event_hdr *h = data; |
| len = HCI_EVENT_HDR_SIZE + h->plen; |
| } else |
| return -EILSEQ; |
| break; |
| |
| case HCI_ACLDATA_PKT: |
| if (count >= HCI_ACL_HDR_SIZE) { |
| struct hci_acl_hdr *h = data; |
| len = HCI_ACL_HDR_SIZE + __le16_to_cpu(h->dlen); |
| } else |
| return -EILSEQ; |
| break; |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| case HCI_SCODATA_PKT: |
| if (count >= HCI_SCO_HDR_SIZE) { |
| struct hci_sco_hdr *h = data; |
| len = HCI_SCO_HDR_SIZE + h->dlen; |
| } else |
| return -EILSEQ; |
| break; |
| #endif |
| } |
| BT_DBG("new packet len %d", len); |
| |
| skb = bt_skb_alloc(len, GFP_ATOMIC); |
| if (!skb) { |
| BT_ERR("%s no memory for the packet", husb->hdev->name); |
| return -ENOMEM; |
| } |
| skb->dev = (void *) husb->hdev; |
| bt_cb(skb)->pkt_type = type; |
| |
| __reassembly(husb, type) = skb; |
| |
| scb = (void *) skb->cb; |
| scb->expect = len; |
| } else { |
| /* Continuation */ |
| scb = (void *) skb->cb; |
| len = scb->expect; |
| } |
| |
| len = min(len, count); |
| |
| memcpy(skb_put(skb, len), data, len); |
| |
| scb->expect -= len; |
| if (!scb->expect) { |
| /* Complete frame */ |
| __reassembly(husb, type) = NULL; |
| bt_cb(skb)->pkt_type = type; |
| hci_recv_frame(skb); |
| } |
| |
| count -= len; data += len; |
| } |
| return 0; |
| } |
| |
| static void hci_usb_rx_complete(struct urb *urb, struct pt_regs *regs) |
| { |
| struct _urb *_urb = container_of(urb, struct _urb, urb); |
| struct hci_usb *husb = (void *) urb->context; |
| struct hci_dev *hdev = husb->hdev; |
| int err, count = urb->actual_length; |
| |
| BT_DBG("%s urb %p type %d status %d count %d flags %x", hdev->name, urb, |
| _urb->type, urb->status, count, urb->transfer_flags); |
| |
| read_lock(&husb->completion_lock); |
| |
| if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| goto unlock; |
| |
| if (urb->status || !count) |
| goto resubmit; |
| |
| if (_urb->type == HCI_SCODATA_PKT) { |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| int i; |
| for (i=0; i < urb->number_of_packets; i++) { |
| BT_DBG("desc %d status %d offset %d len %d", i, |
| urb->iso_frame_desc[i].status, |
| urb->iso_frame_desc[i].offset, |
| urb->iso_frame_desc[i].actual_length); |
| |
| if (!urb->iso_frame_desc[i].status) |
| __recv_frame(husb, _urb->type, |
| urb->transfer_buffer + urb->iso_frame_desc[i].offset, |
| urb->iso_frame_desc[i].actual_length); |
| } |
| #else |
| ; |
| #endif |
| } else { |
| err = __recv_frame(husb, _urb->type, urb->transfer_buffer, count); |
| if (err < 0) { |
| BT_ERR("%s corrupted packet: type %d count %d", |
| husb->hdev->name, _urb->type, count); |
| hdev->stat.err_rx++; |
| } |
| } |
| |
| resubmit: |
| urb->dev = husb->udev; |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| BT_DBG("%s urb %p type %d resubmit status %d", hdev->name, urb, |
| _urb->type, err); |
| |
| unlock: |
| read_unlock(&husb->completion_lock); |
| } |
| |
| static void hci_usb_tx_complete(struct urb *urb, struct pt_regs *regs) |
| { |
| struct _urb *_urb = container_of(urb, struct _urb, urb); |
| struct hci_usb *husb = (void *) urb->context; |
| struct hci_dev *hdev = husb->hdev; |
| |
| BT_DBG("%s urb %p status %d flags %x", hdev->name, urb, |
| urb->status, urb->transfer_flags); |
| |
| atomic_dec(__pending_tx(husb, _urb->type)); |
| |
| urb->transfer_buffer = NULL; |
| kfree_skb((struct sk_buff *) _urb->priv); |
| |
| if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| return; |
| |
| if (!urb->status) |
| hdev->stat.byte_tx += urb->transfer_buffer_length; |
| else |
| hdev->stat.err_tx++; |
| |
| read_lock(&husb->completion_lock); |
| |
| _urb_unlink(_urb); |
| _urb_queue_tail(__completed_q(husb, _urb->type), _urb); |
| |
| hci_usb_tx_wakeup(husb); |
| |
| read_unlock(&husb->completion_lock); |
| } |
| |
| static void hci_usb_destruct(struct hci_dev *hdev) |
| { |
| struct hci_usb *husb = (struct hci_usb *) hdev->driver_data; |
| |
| BT_DBG("%s", hdev->name); |
| |
| kfree(husb); |
| } |
| |
| static void hci_usb_notify(struct hci_dev *hdev, unsigned int evt) |
| { |
| BT_DBG("%s evt %d", hdev->name, evt); |
| } |
| |
| static int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| { |
| struct usb_device *udev = interface_to_usbdev(intf); |
| struct usb_host_endpoint *bulk_out_ep = NULL; |
| struct usb_host_endpoint *bulk_in_ep = NULL; |
| struct usb_host_endpoint *intr_in_ep = NULL; |
| struct usb_host_endpoint *ep; |
| struct usb_host_interface *uif; |
| struct usb_interface *isoc_iface; |
| struct hci_usb *husb; |
| struct hci_dev *hdev; |
| int i, e, size, isoc_ifnum, isoc_alts; |
| |
| BT_DBG("udev %p intf %p", udev, intf); |
| |
| if (!id->driver_info) { |
| const struct usb_device_id *match; |
| match = usb_match_id(intf, blacklist_ids); |
| if (match) |
| id = match; |
| } |
| |
| if (ignore || id->driver_info & HCI_IGNORE) |
| return -ENODEV; |
| |
| if (ignore_dga && id->driver_info & HCI_DIGIANSWER) |
| return -ENODEV; |
| |
| if (ignore_csr && id->driver_info & HCI_CSR) |
| return -ENODEV; |
| |
| if (ignore_sniffer && id->driver_info & HCI_SNIFFER) |
| return -ENODEV; |
| |
| if (intf->cur_altsetting->desc.bInterfaceNumber > 0) |
| return -ENODEV; |
| |
| /* Find endpoints that we need */ |
| uif = intf->cur_altsetting; |
| for (e = 0; e < uif->desc.bNumEndpoints; e++) { |
| ep = &uif->endpoint[e]; |
| |
| switch (ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { |
| case USB_ENDPOINT_XFER_INT: |
| if (ep->desc.bEndpointAddress & USB_DIR_IN) |
| intr_in_ep = ep; |
| break; |
| |
| case USB_ENDPOINT_XFER_BULK: |
| if (ep->desc.bEndpointAddress & USB_DIR_IN) |
| bulk_in_ep = ep; |
| else |
| bulk_out_ep = ep; |
| break; |
| } |
| } |
| |
| if (!bulk_in_ep || !bulk_out_ep || !intr_in_ep) { |
| BT_DBG("Bulk endpoints not found"); |
| goto done; |
| } |
| |
| if (!(husb = kzalloc(sizeof(struct hci_usb), GFP_KERNEL))) { |
| BT_ERR("Can't allocate: control structure"); |
| goto done; |
| } |
| |
| husb->udev = udev; |
| husb->bulk_out_ep = bulk_out_ep; |
| husb->bulk_in_ep = bulk_in_ep; |
| husb->intr_in_ep = intr_in_ep; |
| |
| if (id->driver_info & HCI_DIGIANSWER) |
| husb->ctrl_req = USB_TYPE_VENDOR; |
| else |
| husb->ctrl_req = USB_TYPE_CLASS; |
| |
| /* Find isochronous endpoints that we can use */ |
| size = 0; |
| isoc_iface = NULL; |
| isoc_alts = 0; |
| isoc_ifnum = 1; |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| if (isoc && !(id->driver_info & (HCI_BROKEN_ISOC | HCI_SNIFFER))) |
| isoc_iface = usb_ifnum_to_if(udev, isoc_ifnum); |
| |
| if (isoc_iface) { |
| int a; |
| struct usb_host_endpoint *isoc_out_ep = NULL; |
| struct usb_host_endpoint *isoc_in_ep = NULL; |
| |
| for (a = 0; a < isoc_iface->num_altsetting; a++) { |
| uif = &isoc_iface->altsetting[a]; |
| for (e = 0; e < uif->desc.bNumEndpoints; e++) { |
| ep = &uif->endpoint[e]; |
| |
| switch (ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { |
| case USB_ENDPOINT_XFER_ISOC: |
| if (le16_to_cpu(ep->desc.wMaxPacketSize) < size || |
| uif->desc.bAlternateSetting != isoc) |
| break; |
| size = le16_to_cpu(ep->desc.wMaxPacketSize); |
| |
| isoc_alts = uif->desc.bAlternateSetting; |
| |
| if (ep->desc.bEndpointAddress & USB_DIR_IN) |
| isoc_in_ep = ep; |
| else |
| isoc_out_ep = ep; |
| break; |
| } |
| } |
| } |
| |
| if (!isoc_in_ep || !isoc_out_ep) |
| BT_DBG("Isoc endpoints not found"); |
| else { |
| BT_DBG("isoc ifnum %d alts %d", isoc_ifnum, isoc_alts); |
| if (usb_driver_claim_interface(&hci_usb_driver, isoc_iface, husb) != 0) |
| BT_ERR("Can't claim isoc interface"); |
| else if (usb_set_interface(udev, isoc_ifnum, isoc_alts)) { |
| BT_ERR("Can't set isoc interface settings"); |
| husb->isoc_iface = isoc_iface; |
| usb_driver_release_interface(&hci_usb_driver, isoc_iface); |
| husb->isoc_iface = NULL; |
| } else { |
| husb->isoc_iface = isoc_iface; |
| husb->isoc_in_ep = isoc_in_ep; |
| husb->isoc_out_ep = isoc_out_ep; |
| } |
| } |
| } |
| #endif |
| |
| rwlock_init(&husb->completion_lock); |
| |
| for (i = 0; i < 4; i++) { |
| skb_queue_head_init(&husb->transmit_q[i]); |
| _urb_queue_init(&husb->pending_q[i]); |
| _urb_queue_init(&husb->completed_q[i]); |
| } |
| |
| /* Initialize and register HCI device */ |
| hdev = hci_alloc_dev(); |
| if (!hdev) { |
| BT_ERR("Can't allocate HCI device"); |
| goto probe_error; |
| } |
| |
| husb->hdev = hdev; |
| |
| hdev->type = HCI_USB; |
| hdev->driver_data = husb; |
| SET_HCIDEV_DEV(hdev, &intf->dev); |
| |
| hdev->open = hci_usb_open; |
| hdev->close = hci_usb_close; |
| hdev->flush = hci_usb_flush; |
| hdev->send = hci_usb_send_frame; |
| hdev->destruct = hci_usb_destruct; |
| hdev->notify = hci_usb_notify; |
| |
| hdev->owner = THIS_MODULE; |
| |
| if (reset || id->driver_info & HCI_RESET) |
| set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks); |
| |
| if (force_scofix || id->driver_info & HCI_WRONG_SCO_MTU) { |
| if (!disable_scofix) |
| set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); |
| } |
| |
| if (id->driver_info & HCI_SNIFFER) { |
| if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) |
| set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); |
| } |
| |
| if (id->driver_info & HCI_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 (hci_register_dev(hdev) < 0) { |
| BT_ERR("Can't register HCI device"); |
| hci_free_dev(hdev); |
| goto probe_error; |
| } |
| |
| usb_set_intfdata(intf, husb); |
| return 0; |
| |
| probe_error: |
| if (husb->isoc_iface) |
| usb_driver_release_interface(&hci_usb_driver, husb->isoc_iface); |
| kfree(husb); |
| |
| done: |
| return -EIO; |
| } |
| |
| static void hci_usb_disconnect(struct usb_interface *intf) |
| { |
| struct hci_usb *husb = usb_get_intfdata(intf); |
| struct hci_dev *hdev; |
| |
| if (!husb || intf == husb->isoc_iface) |
| return; |
| |
| usb_set_intfdata(intf, NULL); |
| hdev = husb->hdev; |
| |
| BT_DBG("%s", hdev->name); |
| |
| hci_usb_close(hdev); |
| |
| if (husb->isoc_iface) |
| usb_driver_release_interface(&hci_usb_driver, husb->isoc_iface); |
| |
| if (hci_unregister_dev(hdev) < 0) |
| BT_ERR("Can't unregister HCI device %s", hdev->name); |
| |
| hci_free_dev(hdev); |
| } |
| |
| static int hci_usb_suspend(struct usb_interface *intf, pm_message_t message) |
| { |
| struct hci_usb *husb = usb_get_intfdata(intf); |
| struct list_head killed; |
| unsigned long flags; |
| int i; |
| |
| if (!husb || intf == husb->isoc_iface) |
| return 0; |
| |
| hci_suspend_dev(husb->hdev); |
| |
| INIT_LIST_HEAD(&killed); |
| |
| for (i = 0; i < 4; i++) { |
| struct _urb_queue *q = &husb->pending_q[i]; |
| struct _urb *_urb, *_tmp; |
| |
| while ((_urb = _urb_dequeue(q))) { |
| /* reset queue since _urb_dequeue sets it to NULL */ |
| _urb->queue = q; |
| usb_kill_urb(&_urb->urb); |
| list_add(&_urb->list, &killed); |
| } |
| |
| spin_lock_irqsave(&q->lock, flags); |
| |
| list_for_each_entry_safe(_urb, _tmp, &killed, list) { |
| list_move_tail(&_urb->list, &q->head); |
| } |
| |
| spin_unlock_irqrestore(&q->lock, flags); |
| } |
| |
| return 0; |
| } |
| |
| static int hci_usb_resume(struct usb_interface *intf) |
| { |
| struct hci_usb *husb = usb_get_intfdata(intf); |
| unsigned long flags; |
| int i, err = 0; |
| |
| if (!husb || intf == husb->isoc_iface) |
| return 0; |
| |
| for (i = 0; i < 4; i++) { |
| struct _urb_queue *q = &husb->pending_q[i]; |
| struct _urb *_urb; |
| |
| spin_lock_irqsave(&q->lock, flags); |
| |
| list_for_each_entry(_urb, &q->head, list) { |
| err = usb_submit_urb(&_urb->urb, GFP_ATOMIC); |
| if (err) |
| break; |
| } |
| |
| spin_unlock_irqrestore(&q->lock, flags); |
| |
| if (err) |
| return -EIO; |
| } |
| |
| hci_resume_dev(husb->hdev); |
| |
| return 0; |
| } |
| |
| static struct usb_driver hci_usb_driver = { |
| .name = "hci_usb", |
| .probe = hci_usb_probe, |
| .disconnect = hci_usb_disconnect, |
| .suspend = hci_usb_suspend, |
| .resume = hci_usb_resume, |
| .id_table = bluetooth_ids, |
| }; |
| |
| static int __init hci_usb_init(void) |
| { |
| int err; |
| |
| BT_INFO("HCI USB driver ver %s", VERSION); |
| |
| if ((err = usb_register(&hci_usb_driver)) < 0) |
| BT_ERR("Failed to register HCI USB driver"); |
| |
| return err; |
| } |
| |
| static void __exit hci_usb_exit(void) |
| { |
| usb_deregister(&hci_usb_driver); |
| } |
| |
| module_init(hci_usb_init); |
| module_exit(hci_usb_exit); |
| |
| module_param(ignore, bool, 0644); |
| MODULE_PARM_DESC(ignore, "Ignore devices from the matching table"); |
| |
| 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"); |
| |
| #ifdef CONFIG_BT_HCIUSB_SCO |
| module_param(isoc, int, 0644); |
| MODULE_PARM_DESC(isoc, "Set isochronous transfers for SCO over HCI support"); |
| #endif |
| |
| MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>"); |
| MODULE_DESCRIPTION("Bluetooth HCI USB driver ver " VERSION); |
| MODULE_VERSION(VERSION); |
| MODULE_LICENSE("GPL"); |