diff options
Diffstat (limited to 'drivers/bluetooth/hci_usb.c')
| -rw-r--r-- | drivers/bluetooth/hci_usb.c | 1075 |
1 files changed, 1075 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_usb.c b/drivers/bluetooth/hci_usb.c new file mode 100644 index 00000000000..b120ecf7b8c --- /dev/null +++ b/drivers/bluetooth/hci_usb.c @@ -0,0 +1,1075 @@ +/* + 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/config.h> +#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...) +#undef BT_DMP +#define BT_DMP(D...) +#endif + +#ifndef CONFIG_BT_HCIUSB_ZERO_PACKET +#undef URB_ZERO_PACKET +#define URB_ZERO_PACKET 0 +#endif + +static int ignore = 0; +static int reset = 0; + +#ifdef CONFIG_BT_HCIUSB_SCO +static int isoc = 2; +#endif + +#define VERSION "2.8" + +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[] = { + /* 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 }, + + /* Microsoft Wireless Transceiver for Bluetooth 2.0 */ + { USB_DEVICE(0x045e, 0x009c), .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 }, + + /* 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 }, + + { } /* Terminating entry */ +}; + +static struct _urb *_urb_alloc(int isoc, int 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); + if (urb->setup_packet) + kfree(urb->setup_packet); + if (urb->transfer_buffer) + 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, skb->pkt_type); + struct usb_ctrlrequest *dr; + struct urb *urb; + + if (!_urb) { + _urb = _urb_alloc(0, GFP_ATOMIC); + if (!_urb) + return -ENOMEM; + _urb->type = 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, skb->pkt_type); + struct urb *urb; + int pipe; + + if (!_urb) { + _urb = _urb_alloc(0, GFP_ATOMIC); + if (!_urb) + return -ENOMEM; + _urb->type = 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, skb->pkt_type); + struct urb *urb; + + if (!_urb) { + _urb = _urb_alloc(HCI_MAX_ISOC_FRAMES, GFP_ATOMIC); + if (!_urb) + return -ENOMEM; + _urb->type = 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, skb->pkt_type, skb->len); + + husb = (struct hci_usb *) hdev->driver_data; + + switch (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, 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; + 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; + 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 (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 = kmalloc(sizeof(struct hci_usb), GFP_KERNEL))) { + BT_ERR("Can't allocate: control structure"); + goto done; + } + + memset(husb, 0, sizeof(struct hci_usb)); + + 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 (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 struct usb_driver hci_usb_driver = { + .owner = THIS_MODULE, + .name = "hci_usb", + .probe = hci_usb_probe, + .disconnect = hci_usb_disconnect, + .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(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"); |