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btusb.c
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/*
*
* Generic Bluetooth USB driver
*
* Copyright (C) 2005-2008 Marcel Holtmann <[email protected]>
*
*
* 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/delay.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#define VERSION "0.6"
#define PATCHRAM_TIMEOUT 1000
static int ignore_dga;
static int ignore_csr;
static int ignore_sniffer;
static int disable_scofix;
static int force_scofix;
static int 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
#define BTUSB_BCM_PATCHRAM 0x100
static struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
/* Broadcom SoftSailing reporting vendor specific */
{ USB_DEVICE(0x0a5c, 0x21e1) },
/* Apple MacBookPro 7,1 */
{ USB_DEVICE(0x05ac, 0x8213) },
/* Apple iMac11,1 */
{ USB_DEVICE(0x05ac, 0x8215) },
/* Apple MacBookPro6,2 */
{ USB_DEVICE(0x05ac, 0x8218) },
/* Apple MacBookAir3,1, MacBookAir3,2 */
{ USB_DEVICE(0x05ac, 0x821b) },
/* Apple MacBookAir4,1 */
{ USB_DEVICE(0x05ac, 0x821f) },
/* Apple MacBookPro8,2 */
{ USB_DEVICE(0x05ac, 0x821a) },
/* Apple MacMini5,1 */
{ USB_DEVICE(0x05ac, 0x8281) },
/* AVM BlueFRITZ! USB v2.0 */
{ USB_DEVICE(0x057c, 0x3800) },
/* Bluetooth Ultraport Module from IBM */
{ USB_DEVICE(0x04bf, 0x030a) },
/* ALPS Modules with non-standard id */
{ USB_DEVICE(0x044e, 0x3001) },
{ USB_DEVICE(0x044e, 0x3002) },
/* Ericsson with non-standard id */
{ USB_DEVICE(0x0bdb, 0x1002) },
/* Canyon CN-BTU1 with HID interfaces */
{ USB_DEVICE(0x0c10, 0x0000) },
/* Broadcom BCM20702A0 */
//{ USB_DEVICE(0x14e4, 0x4365), .driver_info = BTUSB_BCM_PATCHRAM },
//{ USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0489, 0xe031), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0a5c, 0x21d3), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0a5c, 0x21d7), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x413c, 0x8197), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0a5c, 0x21e6), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0a5c, 0x21f3), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0a5c, 0x21f4), .driver_info = BTUSB_BCM_PATCHRAM },
{ USB_DEVICE(0x0489, 0xe042) },
{ USB_DEVICE(0x0a5c, 0x21e1) },
{ USB_DEVICE(0x0a5c, 0x21e3) },
{ USB_DEVICE(0x0a5c, 0x21e8) },
/* Foxconn - Hon Hai */
{ USB_DEVICE(0x0489, 0xe033) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, btusb_table);
static struct usb_device_id blacklist_table[] = {
/* CSR BlueCore devices */
{ USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
/* Broadcom BCM2033 without firmware */
{ USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
/* Atheros 3011 with sflash firmware */
{ USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
/* Atheros AR9285 Malbec with sflash firmware */
{ USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
/* Atheros 3012 with sflash firmware */
{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
/* Atheros AR5BBU12 with sflash firmware */
{ USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
/* Atheros AR5BBU12 with sflash firmware */
{ USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
/* 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 FW_0489_E031 "fw-0489_e031.hcd"
#define FW_0A5C_21D3 "fw-0a5c_21d3.hcd"
#define FW_0A5C_21E6 "fw-0a5c_21e6.hcd"
#define FW_0A5C_21F3 "fw-0a5c_21f3.hcd"
#define FW_0A5C_21F4 "fw-0a5c_21f4.hcd"
#define FW_413C_8197 "fw-413c_8197.hcd"
MODULE_FIRMWARE(FW_0489_E031);
MODULE_FIRMWARE(FW_0A5C_21D3);
MODULE_FIRMWARE(FW_0A5C_21E6);
MODULE_FIRMWARE(FW_0A5C_21F3);
MODULE_FIRMWARE(FW_0A5C_21F4);
MODULE_FIRMWARE(FW_413C_8197);
static struct usb_device_id patchram_table[] = {
/* Dell DW1704 */
{ USB_DEVICE(0x0a5c, 0x21d3), .driver_info = (kernel_ulong_t) FW_0A5C_21D3 },
{ USB_DEVICE(0x0a5c, 0x21d7), .driver_info = (kernel_ulong_t) FW_0A5C_21D3 },
/* Dell DW380 */
{ USB_DEVICE(0x413c, 0x8197), .driver_info = (kernel_ulong_t) FW_413C_8197 },
/* FoxConn Hon Hai */
{ USB_DEVICE(0x0489, 0xe031), .driver_info = (kernel_ulong_t) FW_0489_E031 },
/* Lenovo */
{ USB_DEVICE(0x0a5c, 0x21e6), .driver_info = (kernel_ulong_t) FW_0A5C_21E6 },
{ USB_DEVICE(0x0a5c, 0x21f3), .driver_info = (kernel_ulong_t) FW_0A5C_21F3 },
{ USB_DEVICE(0x0a5c, 0x21f4), .driver_info = (kernel_ulong_t) FW_0A5C_21F4 },
};
#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;
u8 *firmware;
size_t fw_size;
};
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) {
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) {
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) {
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);
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) {
BT_ERR("%s urb %p submission failed", hdev->name, urb);
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 inline void load_patchram_fw(struct usb_device *udev, struct btusb_data *data, const char *firmware)
{
size_t pos = 0;
int err = 0;
unsigned char reset_cmd[] = { 0x03, 0x0c, 0x00 };
unsigned char download_cmd[] = { 0x2e, 0xfc, 0x00 };
if (!data->firmware) {
const struct firmware *fw;
if (request_firmware(&fw, firmware, &udev->dev) < 0) {
BT_INFO("can't load firmware, may not work correctly");
return;
}
data->firmware = kmalloc(fw->size, GFP_KERNEL);
if (!data->firmware) {
BT_INFO("OOM");
release_firmware(fw);
return;
}
data->fw_size = fw->size;
memcpy(data->firmware, fw->data, data->fw_size);
release_firmware(fw);
}
BT_INFO("send reset cmd, %d", sizeof(reset_cmd));
if (usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, USB_TYPE_CLASS, 0, 0,
reset_cmd, sizeof(reset_cmd), PATCHRAM_TIMEOUT) < 0) {
err = -1;
goto out;
}
msleep(300);
BT_INFO("send download cmd");
if (usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, USB_TYPE_CLASS, 0, 0,
download_cmd, sizeof(download_cmd), PATCHRAM_TIMEOUT) < 0) {
err = -1;
goto out;
}
msleep(300);
BT_INFO("send img: %d", data->fw_size);
while (pos < data->fw_size) {
size_t len;
len = data->firmware[pos + 2] + 3;