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linux/drivers/bluetooth/ath3k.c
Linus Torvalds 28f3d71761 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 
Pull more networking updates from David Miller:
 "Ok, everything from here on out will be bug fixes."

1) One final sync of wireless and bluetooth stuff from John Linville.
   These changes have all been in his tree for more than a week, and
   therefore have had the necessary -next exposure.  John was just away
   on a trip and didn't have a change to send the pull request until a
   day or two ago.

2) Put back some defines in user exposed header file areas that were
   removed during the tokenring purge.  From Stephen Hemminger and Paul
   Gortmaker.

3) A bug fix for UDP hash table allocation got lost in the pile due to
   one of those "you got it..  no I've got it.." situations.  :-)

   From Tim Bird.

4) SKB coalescing in TCP needs to have stricter checks, otherwise we'll
   try to coalesce overlapping frags and crash.  Fix from Eric Dumazet.

5) RCU routing table lookups can race with free_fib_info(), causing
   crashes when we deref the device pointers in the route.  Fix by
   releasing the net device in the RCU callback.  From Yanmin Zhang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (293 commits)
  tcp: take care of overlaps in tcp_try_coalesce()
  ipv4: fix the rcu race between free_fib_info and ip_route_output_slow
  mm: add a low limit to alloc_large_system_hash
  ipx: restore token ring define to include/linux/ipx.h
  if: restore token ring ARP type to header
  xen: do not disable netfront in dom0
  phy/micrel: Fix ID of KSZ9021
  mISDN: Add X-Tensions USB ISDN TA XC-525
  gianfar:don't add FCB length to hard_header_len
  Bluetooth: Report proper error number in disconnection
  Bluetooth: Create flags for bt_sk()
  Bluetooth: report the right security level in getsockopt
  Bluetooth: Lock the L2CAP channel when sending
  Bluetooth: Restore locking semantics when looking up L2CAP channels
  Bluetooth: Fix a redundant and problematic incoming MTU check
  Bluetooth: Add support for Foxconn/Hon Hai AR5BBU22 0489:E03C
  Bluetooth: Fix EIR data generation for mgmt_device_found
  Bluetooth: Fix Inquiry with RSSI event mask
  Bluetooth: improve readability of l2cap_seq_list code
  Bluetooth: Fix skb length calculation
  ...
2012-05-24 11:54:29 -07:00

458 lines
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C
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/*
* Copyright (c) 2008-2009 Atheros Communications Inc.
*
* 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/usb.h>
#include <net/bluetooth/bluetooth.h>
#define VERSION "1.0"
#define ATH3K_FIRMWARE "ath3k-1.fw"
#define ATH3K_DNLOAD 0x01
#define ATH3K_GETSTATE 0x05
#define ATH3K_SET_NORMAL_MODE 0x07
#define ATH3K_GETVERSION 0x09
#define USB_REG_SWITCH_VID_PID 0x0a
#define ATH3K_MODE_MASK 0x3F
#define ATH3K_NORMAL_MODE 0x0E
#define ATH3K_PATCH_UPDATE 0x80
#define ATH3K_SYSCFG_UPDATE 0x40
#define ATH3K_XTAL_FREQ_26M 0x00
#define ATH3K_XTAL_FREQ_40M 0x01
#define ATH3K_XTAL_FREQ_19P2 0x02
#define ATH3K_NAME_LEN 0xFF
struct ath3k_version {
unsigned int rom_version;
unsigned int build_version;
unsigned int ram_version;
unsigned char ref_clock;
unsigned char reserved[0x07];
};
static struct usb_device_id ath3k_table[] = {
/* Atheros AR3011 */
{ USB_DEVICE(0x0CF3, 0x3000) },
/* Atheros AR3011 with sflash firmware*/
{ USB_DEVICE(0x0CF3, 0x3002) },
{ USB_DEVICE(0x13d3, 0x3304) },
{ USB_DEVICE(0x0930, 0x0215) },
{ USB_DEVICE(0x0489, 0xE03D) },
/* Atheros AR9285 Malbec with sflash firmware */
{ USB_DEVICE(0x03F0, 0x311D) },
/* Atheros AR3012 with sflash firmware*/
{ USB_DEVICE(0x0CF3, 0x3004) },
{ USB_DEVICE(0x0CF3, 0x311D) },
{ USB_DEVICE(0x13d3, 0x3375) },
{ USB_DEVICE(0x04CA, 0x3005) },
{ USB_DEVICE(0x13d3, 0x3362) },
{ USB_DEVICE(0x0CF3, 0xE004) },
/* Atheros AR5BBU12 with sflash firmware */
{ USB_DEVICE(0x0489, 0xE02C) },
/* Atheros AR5BBU22 with sflash firmware */
{ USB_DEVICE(0x0489, 0xE03C) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, ath3k_table);
#define BTUSB_ATH3012 0x80
/* This table is to load patch and sysconfig files
* for AR3012 */
static struct usb_device_id ath3k_blist_tbl[] = {
/* Atheros AR3012 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 AR5BBU22 with sflash firmware */
{ USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
{ } /* Terminating entry */
};
#define USB_REQ_DFU_DNLOAD 1
#define BULK_SIZE 4096
#define FW_HDR_SIZE 20
static int ath3k_load_firmware(struct usb_device *udev,
const struct firmware *firmware)
{
u8 *send_buf;
int err, pipe, len, size, sent = 0;
int count = firmware->size;
BT_DBG("udev %p", udev);
pipe = usb_sndctrlpipe(udev, 0);
send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
if (!send_buf) {
BT_ERR("Can't allocate memory chunk for firmware");
return -ENOMEM;
}
memcpy(send_buf, firmware->data, 20);
if ((err = usb_control_msg(udev, pipe,
USB_REQ_DFU_DNLOAD,
USB_TYPE_VENDOR, 0, 0,
send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
BT_ERR("Can't change to loading configuration err");
goto error;
}
sent += 20;
count -= 20;
while (count) {
size = min_t(uint, count, BULK_SIZE);
pipe = usb_sndbulkpipe(udev, 0x02);
memcpy(send_buf, firmware->data + sent, size);
err = usb_bulk_msg(udev, pipe, send_buf, size,
&len, 3000);
if (err || (len != size)) {
BT_ERR("Error in firmware loading err = %d,"
"len = %d, size = %d", err, len, size);
goto error;
}
sent += size;
count -= size;
}
error:
kfree(send_buf);
return err;
}
static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
{
int pipe = 0;
pipe = usb_rcvctrlpipe(udev, 0);
return usb_control_msg(udev, pipe, ATH3K_GETSTATE,
USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
state, 0x01, USB_CTRL_SET_TIMEOUT);
}
static int ath3k_get_version(struct usb_device *udev,
struct ath3k_version *version)
{
int pipe = 0;
pipe = usb_rcvctrlpipe(udev, 0);
return usb_control_msg(udev, pipe, ATH3K_GETVERSION,
USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, version,
sizeof(struct ath3k_version),
USB_CTRL_SET_TIMEOUT);
}
static int ath3k_load_fwfile(struct usb_device *udev,
const struct firmware *firmware)
{
u8 *send_buf;
int err, pipe, len, size, count, sent = 0;
int ret;
count = firmware->size;
send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
if (!send_buf) {
BT_ERR("Can't allocate memory chunk for firmware");
return -ENOMEM;
}
size = min_t(uint, count, FW_HDR_SIZE);
memcpy(send_buf, firmware->data, size);
pipe = usb_sndctrlpipe(udev, 0);
ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
USB_TYPE_VENDOR, 0, 0, send_buf,
size, USB_CTRL_SET_TIMEOUT);
if (ret < 0) {
BT_ERR("Can't change to loading configuration err");
kfree(send_buf);
return ret;
}
sent += size;
count -= size;
while (count) {
size = min_t(uint, count, BULK_SIZE);
pipe = usb_sndbulkpipe(udev, 0x02);
memcpy(send_buf, firmware->data + sent, size);
err = usb_bulk_msg(udev, pipe, send_buf, size,
&len, 3000);
if (err || (len != size)) {
BT_ERR("Error in firmware loading err = %d,"
"len = %d, size = %d", err, len, size);
kfree(send_buf);
return err;
}
sent += size;
count -= size;
}
kfree(send_buf);
return 0;
}
static int ath3k_switch_pid(struct usb_device *udev)
{
int pipe = 0;
pipe = usb_sndctrlpipe(udev, 0);
return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
USB_TYPE_VENDOR, 0, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
}
static int ath3k_set_normal_mode(struct usb_device *udev)
{
unsigned char fw_state;
int pipe = 0, ret;
ret = ath3k_get_state(udev, &fw_state);
if (ret < 0) {
BT_ERR("Can't get state to change to normal mode err");
return ret;
}
if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
BT_DBG("firmware was already in normal mode");
return 0;
}
pipe = usb_sndctrlpipe(udev, 0);
return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
USB_TYPE_VENDOR, 0, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
}
static int ath3k_load_patch(struct usb_device *udev)
{
unsigned char fw_state;
char filename[ATH3K_NAME_LEN] = {0};
const struct firmware *firmware;
struct ath3k_version fw_version, pt_version;
int ret;
ret = ath3k_get_state(udev, &fw_state);
if (ret < 0) {
BT_ERR("Can't get state to change to load ram patch err");
return ret;
}
if (fw_state & ATH3K_PATCH_UPDATE) {
BT_DBG("Patch was already downloaded");
return 0;
}
ret = ath3k_get_version(udev, &fw_version);
if (ret < 0) {
BT_ERR("Can't get version to change to load ram patch err");
return ret;
}
snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
fw_version.rom_version);
ret = request_firmware(&firmware, filename, &udev->dev);
if (ret < 0) {
BT_ERR("Patch file not found %s", filename);
return ret;
}
pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8);
pt_version.build_version = *(int *)
(firmware->data + firmware->size - 4);
if ((pt_version.rom_version != fw_version.rom_version) ||
(pt_version.build_version <= fw_version.build_version)) {
BT_ERR("Patch file version did not match with firmware");
release_firmware(firmware);
return -EINVAL;
}
ret = ath3k_load_fwfile(udev, firmware);
release_firmware(firmware);
return ret;
}
static int ath3k_load_syscfg(struct usb_device *udev)
{
unsigned char fw_state;
char filename[ATH3K_NAME_LEN] = {0};
const struct firmware *firmware;
struct ath3k_version fw_version;
int clk_value, ret;
ret = ath3k_get_state(udev, &fw_state);
if (ret < 0) {
BT_ERR("Can't get state to change to load configration err");
return -EBUSY;
}
ret = ath3k_get_version(udev, &fw_version);
if (ret < 0) {
BT_ERR("Can't get version to change to load ram patch err");
return ret;
}
switch (fw_version.ref_clock) {
case ATH3K_XTAL_FREQ_26M:
clk_value = 26;
break;
case ATH3K_XTAL_FREQ_40M:
clk_value = 40;
break;
case ATH3K_XTAL_FREQ_19P2:
clk_value = 19;
break;
default:
clk_value = 0;
break;
}
snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
fw_version.rom_version, clk_value, ".dfu");
ret = request_firmware(&firmware, filename, &udev->dev);
if (ret < 0) {
BT_ERR("Configuration file not found %s", filename);
return ret;
}
ret = ath3k_load_fwfile(udev, firmware);
release_firmware(firmware);
return ret;
}
static int ath3k_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
const struct firmware *firmware;
struct usb_device *udev = interface_to_usbdev(intf);
int ret;
BT_DBG("intf %p id %p", intf, id);
if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
return -ENODEV;
/* match device ID in ath3k blacklist table */
if (!id->driver_info) {
const struct usb_device_id *match;
match = usb_match_id(intf, ath3k_blist_tbl);
if (match)
id = match;
}
/* load patch and sysconfig files for AR3012 */
if (id->driver_info & BTUSB_ATH3012) {
/* New firmware with patch and sysconfig files already loaded */
if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
return -ENODEV;
ret = ath3k_load_patch(udev);
if (ret < 0) {
BT_ERR("Loading patch file failed");
return ret;
}
ret = ath3k_load_syscfg(udev);
if (ret < 0) {
BT_ERR("Loading sysconfig file failed");
return ret;
}
ret = ath3k_set_normal_mode(udev);
if (ret < 0) {
BT_ERR("Set normal mode failed");
return ret;
}
ath3k_switch_pid(udev);
return 0;
}
ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
if (ret < 0) {
if (ret == -ENOENT)
BT_ERR("Firmware file \"%s\" not found",
ATH3K_FIRMWARE);
else
BT_ERR("Firmware file \"%s\" request failed (err=%d)",
ATH3K_FIRMWARE, ret);
return ret;
}
ret = ath3k_load_firmware(udev, firmware);
release_firmware(firmware);
return ret;
}
static void ath3k_disconnect(struct usb_interface *intf)
{
BT_DBG("ath3k_disconnect intf %p", intf);
}
static struct usb_driver ath3k_driver = {
.name = "ath3k",
.probe = ath3k_probe,
.disconnect = ath3k_disconnect,
.id_table = ath3k_table,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(ath3k_driver);
MODULE_AUTHOR("Atheros Communications");
MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(ATH3K_FIRMWARE);
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