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linux/drivers/bluetooth/btusb.c
Ismael Ferreras Morezuelas b3cf94c8b6 Bluetooth: btusb: Use quirk to skip HCI_FLT_CLEAR_ALL on fake CSR controllers 
Another subset of the more recent batch of Chinese clones aren't
specs-compliant and seem to lock up whenever they receive a
HCI_OP_SET_EVENT_FLT with flt_type set to zero/HCI_FLT_CLEAR_ALL,
which on Linux (until the recent HCI state-machine refactor) happened
right at BR/EDR setup. As there are other less-straightforward ways
of reaching those operations, this patch is still relevant.

So, while all the previous efforts to wrangle the herd of fake CSRs
seem to be paying off (and these also get detected as such) we
still need to take care of this quirk; testers seem to agree
that these dongles tend to work well enough afterwards.

From some cursory USB packet capture on Windows it seems like
that driver doesn't appear to use this clear-all functionality at all.

This patch was tested on some really popular AliExpress-style
dongles, in my case marked as "V5.0". Chip markings: UG8413,
the backside of the PCB says "USB Dangel" (sic).

Here is the `hciconfig -a` output; for completeness:

hci0:	Type: Primary  Bus: USB
	BD Address: 00:1A:7D:DA:7X:XX  ACL MTU: 679:8  SCO MTU: 48:16
	UP RUNNING PSCAN ISCAN
	Features: 0xbf 0x3e 0x4d 0xfa 0xdb 0x3d 0x7b 0xc7
	Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
	Link policy: RSWITCH SNIFF
	Link mode: PERIPHERAL ACCEPT
	Name: 'CSR8510 A10.'
	Class: 0x7c0104
	Service Classes: Rendering, Capturing, Object Transfer, Audio, Telephony
	Device Class: Computer, Desktop workstation
	HCI Version: 4.0 (0x6)  Revision: 0x3120
	LMP Version: 4.0 (0x6)  Subversion: 0x22bb
	Manufacturer: Cambridge Silicon Radio (10)

As well as the `lsusb -vv -d 0a12:0001`:

ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          224 Wireless
  bDeviceSubClass         1 Radio Frequency
  bDeviceProtocol         1 Bluetooth
  bMaxPacketSize0        64
  idVendor           0x0a12 Cambridge Silicon Radio, Ltd
  idProduct          0x0001 Bluetooth Dongle (HCI mode)
  bcdDevice           88.91
  iManufacturer           0
  iProduct                2 BT DONGLE10
  iSerial                 0
  bNumConfigurations      1

Also, changed the benign dmesg print that shows up whenever the
generic force-suspend fails from bt_dev_err to bt_dev_warn;
it's okay and done on a best-effort basis, not a problem
if that does not work.

Also, swapped the HCI subver and LMP subver numbers for the Barrot
in the comment, which I copied wrong the last time around.

Fixes: 81cac64ba2 ("Bluetooth: Deal with USB devices that are faking CSR vendor")
Fixes: cde1a8a992 ("Bluetooth: btusb: Fix and detect most of the Chinese Bluetooth controllers")
Fixes: d74e0ae7e0 ("Bluetooth: btusb: Fix detection of some fake CSR controllers with a bcdDevice val of 0x0134")
Fixes: 0671c06623 ("Bluetooth: btusb: Add workaround for remote-wakeup issues with Barrot 8041a02 fake CSR controllers")
Fixes: f4292e2faf ("Bluetooth: btusb: Make the CSR clone chip force-suspend workaround more generic")

Link: https://bugzilla.kernel.org/show_bug.cgi?id=60824
Link: https://gist.github.com/nevack/6b36b82d715dc025163d9e9124840a07

Cc: stable@vger.kernel.org
Cc: Hans de Goede <hdegoede@redhat.com>
Tested-by: Gonzalo Tornaría <tornaria@cmat.edu.uy>
Tested-by: Mateus Lemos <lemonsmateus@gmail.com>
Tested-by: Ismael Ferreras Morezuelas <swyterzone@gmail.com>
Signed-off-by: Ismael Ferreras Morezuelas <swyterzone@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2022-03-18 17:12:07 +01:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Generic Bluetooth USB driver
*
* Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
*/
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/quirks.h>
#include <linux/firmware.h>
#include <linux/iopoll.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/suspend.h>
#include <linux/gpio/consumer.h>
#include <linux/debugfs.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btintel.h"
#include "btbcm.h"
#include "btrtl.h"
#include "btmtk.h"
#define VERSION "0.8"
static bool disable_scofix;
static bool force_scofix;
static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
static bool reset = true;
static struct usb_driver btusb_driver;
#define BTUSB_IGNORE BIT(0)
#define BTUSB_DIGIANSWER BIT(1)
#define BTUSB_CSR BIT(2)
#define BTUSB_SNIFFER BIT(3)
#define BTUSB_BCM92035 BIT(4)
#define BTUSB_BROKEN_ISOC BIT(5)
#define BTUSB_WRONG_SCO_MTU BIT(6)
#define BTUSB_ATH3012 BIT(7)
#define BTUSB_INTEL_COMBINED BIT(8)
#define BTUSB_INTEL_BOOT BIT(9)
#define BTUSB_BCM_PATCHRAM BIT(10)
#define BTUSB_MARVELL BIT(11)
#define BTUSB_SWAVE BIT(12)
#define BTUSB_AMP BIT(13)
#define BTUSB_QCA_ROME BIT(14)
#define BTUSB_BCM_APPLE BIT(15)
#define BTUSB_REALTEK BIT(16)
#define BTUSB_BCM2045 BIT(17)
#define BTUSB_IFNUM_2 BIT(18)
#define BTUSB_CW6622 BIT(19)
#define BTUSB_MEDIATEK BIT(20)
#define BTUSB_WIDEBAND_SPEECH BIT(21)
#define BTUSB_VALID_LE_STATES BIT(22)
#define BTUSB_QCA_WCN6855 BIT(23)
#define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
#define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
#define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26)
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
/* Generic Bluetooth AMP device */
{ USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
/* Generic Bluetooth USB interface */
{ USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
/* Apple-specific (Broadcom) devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
/* MediaTek MT76x0E */
{ USB_DEVICE(0x0e8d, 0x763f) },
/* 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), .driver_info = BTUSB_SWAVE },
/* 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 BCM20702B0 (Dynex/Insignia) */
{ USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
/* Broadcom BCM43142A0 (Foxconn/Lenovo) */
{ USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Broadcom BCM920703 (HTC Vive) */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Foxconn - Hon Hai */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Lite-On Technology - Broadcom based */
{ USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Broadcom devices with vendor specific id */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* ASUSTek Computer - Broadcom based */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Belkin F8065bf - Broadcom based */
{ USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* IMC Networks - Broadcom based */
{ USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Dell Computer - Broadcom based */
{ USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Toshiba Corp - Broadcom based */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_PATCHRAM },
/* Intel Bluetooth USB Bootloader (RAM module) */
{ USB_DEVICE(0x8087, 0x0a5a),
.driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, btusb_table);
static const 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 },
/* Broadcom BCM2045 devices */
{ USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
/* Atheros 3011 with sflash firmware */
{ USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
{ USB_DEVICE(0x13d3, 0x3304), .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(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x13d3, 0x3490), .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, 0xe036), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
/* QCA ROME chipset */
{ USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
BTUSB_WIDEBAND_SPEECH },
/* QCA WCN6855 chipset */
{ USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
/* Broadcom BCM2035 */
{ USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
{ USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
{ USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
/* 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 | BTUSB_CW6622},
/* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
{ USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
/* 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 | BTUSB_BROKEN_ISOC },
/* Frontline ComProbe Bluetooth Sniffer */
{ USB_DEVICE(0x16d3, 0x0002),
.driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
/* Marvell Bluetooth devices */
{ USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
{ USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
{ USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
/* Intel Bluetooth devices */
{ USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
{ USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
BTUSB_INTEL_NO_WBS_SUPPORT |
BTUSB_INTEL_BROKEN_INITIAL_NCMD |
BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
{ USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
BTUSB_INTEL_NO_WBS_SUPPORT |
BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
{ USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
{ USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
/* Other Intel Bluetooth devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
.driver_info = BTUSB_IGNORE },
/* Realtek 8822CE Bluetooth devices */
{ USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
/* Realtek 8852AE Bluetooth devices */
{ USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
/* Realtek Bluetooth devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
.driver_info = BTUSB_REALTEK },
/* MediaTek Bluetooth devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
.driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
/* Additional MediaTek MT7615E Bluetooth devices */
{ USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
/* Additional MediaTek MT7663 Bluetooth devices */
{ USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
/* Additional MediaTek MT7668 Bluetooth devices */
{ USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
/* Additional MediaTek MT7921 Bluetooth devices */
{ USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
/* MediaTek MT7922A Bluetooth devices */
{ USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
{ USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
BTUSB_WIDEBAND_SPEECH |
BTUSB_VALID_LE_STATES },
/* Additional Realtek 8723AE Bluetooth devices */
{ USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
/* Additional Realtek 8723BE Bluetooth devices */
{ USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
/* Additional Realtek 8723BU Bluetooth devices */
{ USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
/* Additional Realtek 8723DE Bluetooth devices */
{ USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
/* Additional Realtek 8761B Bluetooth devices */
{ USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
/* Additional Realtek 8761BU Bluetooth devices */
{ USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
/* Additional Realtek 8821AE Bluetooth devices */
{ USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
/* Additional Realtek 8822BE Bluetooth devices */
{ USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
{ USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
/* Additional Realtek 8822CE Bluetooth devices */
{ USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
/* Silicon Wave based devices */
{ USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
{ } /* Terminating entry */
};
/* The Bluetooth USB module build into some devices needs to be reset on resume,
* this is a problem with the platform (likely shutting off all power) not with
* the module itself. So we use a DMI list to match known broken platforms.
*/
static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
{
/* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
},
},
{
/* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
},
},
{
/* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
},
},
{}
};
#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
#define BTUSB_BOOTLOADER 5
#define BTUSB_DOWNLOADING 6
#define BTUSB_FIRMWARE_LOADED 7
#define BTUSB_FIRMWARE_FAILED 8
#define BTUSB_BOOTING 9
#define BTUSB_DIAG_RUNNING 10
#define BTUSB_OOB_WAKE_ENABLED 11
#define BTUSB_HW_RESET_ACTIVE 12
#define BTUSB_TX_WAIT_VND_EVT 13
#define BTUSB_WAKEUP_AUTOSUSPEND 14
#define BTUSB_USE_ALT3_FOR_WBS 15
struct btusb_data {
struct hci_dev *hdev;
struct usb_device *udev;
struct usb_interface *intf;
struct usb_interface *isoc;
struct usb_interface *diag;
unsigned isoc_ifnum;
unsigned long flags;
bool poll_sync;
int intr_interval;
struct work_struct work;
struct work_struct waker;
struct delayed_work rx_work;
struct sk_buff_head acl_q;
struct usb_anchor deferred;
struct usb_anchor tx_anchor;
int tx_in_flight;
spinlock_t txlock;
struct usb_anchor intr_anchor;
struct usb_anchor bulk_anchor;
struct usb_anchor isoc_anchor;
struct usb_anchor diag_anchor;
struct usb_anchor ctrl_anchor;
spinlock_t rxlock;
struct sk_buff *evt_skb;
struct sk_buff *acl_skb;
struct sk_buff *sco_skb;
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;
struct usb_endpoint_descriptor *diag_tx_ep;
struct usb_endpoint_descriptor *diag_rx_ep;
struct gpio_desc *reset_gpio;
__u8 cmdreq_type;
__u8 cmdreq;
unsigned int sco_num;
unsigned int air_mode;
bool usb_alt6_packet_flow;
int isoc_altsetting;
int suspend_count;
int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
int (*setup_on_usb)(struct hci_dev *hdev);
int oob_wake_irq; /* irq for out-of-band wake-on-bt */
unsigned cmd_timeout_cnt;
};
static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct gpio_desc *reset_gpio = data->reset_gpio;
if (++data->cmd_timeout_cnt < 5)
return;
if (!reset_gpio) {
bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
return;
}
/*
* Toggle the hard reset line if the platform provides one. The reset
* is going to yank the device off the USB and then replug. So doing
* once is enough. The cleanup is handled correctly on the way out
* (standard USB disconnect), and the new device is detected cleanly
* and bound to the driver again like it should be.
*/
if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
bt_dev_err(hdev, "last reset failed? Not resetting again");
return;
}
bt_dev_err(hdev, "Initiating HW reset via gpio");
gpiod_set_value_cansleep(reset_gpio, 1);
msleep(100);
gpiod_set_value_cansleep(reset_gpio, 0);
}
static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct gpio_desc *reset_gpio = data->reset_gpio;
if (++data->cmd_timeout_cnt < 5)
return;
if (!reset_gpio) {
bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
return;
}
/* Toggle the hard reset line. The Realtek device is going to
* yank itself off the USB and then replug. The cleanup is handled
* correctly on the way out (standard USB disconnect), and the new
* device is detected cleanly and bound to the driver again like
* it should be.
*/
if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
bt_dev_err(hdev, "last reset failed? Not resetting again");
return;
}
bt_dev_err(hdev, "Reset Realtek device via gpio");
gpiod_set_value_cansleep(reset_gpio, 1);
msleep(200);
gpiod_set_value_cansleep(reset_gpio, 0);
}
static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct gpio_desc *reset_gpio = data->reset_gpio;
int err;
if (++data->cmd_timeout_cnt < 5)
return;
if (reset_gpio) {
bt_dev_err(hdev, "Reset qca device via bt_en gpio");
/* Toggle the hard reset line. The qca bt device is going to
* yank itself off the USB and then replug. The cleanup is handled
* correctly on the way out (standard USB disconnect), and the new
* device is detected cleanly and bound to the driver again like
* it should be.
*/
if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
bt_dev_err(hdev, "last reset failed? Not resetting again");
return;
}
gpiod_set_value_cansleep(reset_gpio, 0);
msleep(200);
gpiod_set_value_cansleep(reset_gpio, 1);
return;
}
bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
/* This is not an unbalanced PM reference since the device will reset */
err = usb_autopm_get_interface(data->intf);
if (!err)
usb_queue_reset_device(data->intf);
else
bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
}
static inline void btusb_free_frags(struct btusb_data *data)
{
unsigned long flags;
spin_lock_irqsave(&data->rxlock, flags);
kfree_skb(data->evt_skb);
data->evt_skb = NULL;
kfree_skb(data->acl_skb);
data->acl_skb = NULL;
kfree_skb(data->sco_skb);
data->sco_skb = NULL;
spin_unlock_irqrestore(&data->rxlock, flags);
}
static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
{
if (data->intr_interval) {
/* Trigger dequeue immediatelly if an event is received */
schedule_delayed_work(&data->rx_work, 0);
}
return data->recv_event(data->hdev, skb);
}
static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
{
struct sk_buff *skb;
unsigned long flags;
int err = 0;
spin_lock_irqsave(&data->rxlock, flags);
skb = data->evt_skb;
while (count) {
int len;
if (!skb) {
skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
if (!skb) {
err = -ENOMEM;
break;
}
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
}
len = min_t(uint, hci_skb_expect(skb), count);
skb_put_data(skb, buffer, len);
count -= len;
buffer += len;
hci_skb_expect(skb) -= len;
if (skb->len == HCI_EVENT_HDR_SIZE) {
/* Complete event header */
hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
if (skb_tailroom(skb) < hci_skb_expect(skb)) {
kfree_skb(skb);
skb = NULL;
err = -EILSEQ;
break;
}
}
if (!hci_skb_expect(skb)) {
/* Complete frame */
btusb_recv_event(data, skb);
skb = NULL;
}
}
data->evt_skb = skb;
spin_unlock_irqrestore(&data->rxlock, flags);
return err;
}
static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
{
/* Only queue ACL packet if intr_interval is set as it means
* force_poll_sync has been enabled.
*/
if (!data->intr_interval)
return data->recv_acl(data->hdev, skb);
skb_queue_tail(&data->acl_q, skb);
schedule_delayed_work(&data->rx_work, data->intr_interval);
return 0;
}
static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
{
struct sk_buff *skb;
unsigned long flags;
int err = 0;
spin_lock_irqsave(&data->rxlock, flags);
skb = data->acl_skb;
while (count) {
int len;
if (!skb) {
skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
if (!skb) {
err = -ENOMEM;
break;
}
hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
}
len = min_t(uint, hci_skb_expect(skb), count);
skb_put_data(skb, buffer, len);
count -= len;
buffer += len;
hci_skb_expect(skb) -= len;
if (skb->len == HCI_ACL_HDR_SIZE) {
__le16 dlen = hci_acl_hdr(skb)->dlen;
/* Complete ACL header */
hci_skb_expect(skb) = __le16_to_cpu(dlen);
if (skb_tailroom(skb) < hci_skb_expect(skb)) {
kfree_skb(skb);
skb = NULL;
err = -EILSEQ;
break;
}
}
if (!hci_skb_expect(skb)) {
/* Complete frame */
btusb_recv_acl(data, skb);
skb = NULL;
}
}
data->acl_skb = skb;
spin_unlock_irqrestore(&data->rxlock, flags);
return err;
}
static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
{
struct sk_buff *skb;
unsigned long flags;
int err = 0;
spin_lock_irqsave(&data->rxlock, flags);
skb = data->sco_skb;
while (count) {
int len;
if (!skb) {
skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
if (!skb) {
err = -ENOMEM;
break;
}
hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
}
len = min_t(uint, hci_skb_expect(skb), count);
skb_put_data(skb, buffer, len);
count -= len;
buffer += len;
hci_skb_expect(skb) -= len;
if (skb->len == HCI_SCO_HDR_SIZE) {
/* Complete SCO header */
hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
if (skb_tailroom(skb) < hci_skb_expect(skb)) {
kfree_skb(skb);
skb = NULL;
err = -EILSEQ;
break;
}
}
if (!hci_skb_expect(skb)) {
/* Complete frame */
hci_recv_frame(data->hdev, skb);
skb = NULL;
}
}
data->sco_skb = skb;
spin_unlock_irqrestore(&data->rxlock, flags);
return err;
}
static void btusb_intr_complete(struct urb *urb)
{
struct hci_dev *hdev = urb->context;
struct btusb_data *data = hci_get_drvdata(hdev);
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 (btusb_recv_intr(data, urb->transfer_buffer,
urb->actual_length) < 0) {
bt_dev_err(hdev, "corrupted event packet");
hdev->stat.err_rx++;
}
} else if (urb->status == -ENOENT) {
/* Avoid suspend failed when usb_kill_urb */
return;
}
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_dev_err(hdev, "urb %p failed to resubmit (%d)",
urb, -err);
if (err != -EPERM)
hci_cmd_sync_cancel(hdev, -err);
usb_unanchor_urb(urb);
}
}
static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct urb *urb;
unsigned char *buf;
unsigned int pipe;
int err, size;
BT_DBG("%s", hdev->name);
if (!data->intr_ep)
return -ENODEV;
urb = usb_alloc_urb(0, mem_flags);
if (!urb)
return -ENOMEM;
size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
buf = kmalloc(size, mem_flags);
if (!buf) {
usb_free_urb(urb);
return -ENOMEM;
}
pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
usb_fill_int_urb(urb, data->udev, pipe, buf, size,
btusb_intr_complete, hdev, data->intr_ep->bInterval);
urb->transfer_flags |= URB_FREE_BUFFER;
usb_anchor_urb(urb, &data->intr_anchor);
err = usb_submit_urb(urb, mem_flags);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p submission failed (%d)",
urb, -err);
if (err != -EPERM)
hci_cmd_sync_cancel(hdev, -err);
usb_unanchor_urb(urb);
}
/* Only initialize intr_interval if URB poll sync is enabled */
if (!data->poll_sync)
goto done;
/* The units are frames (milliseconds) for full and low speed devices,
* and microframes (1/8 millisecond) for highspeed and SuperSpeed
* devices.
*
* This is done once on open/resume so it shouldn't change even if
* force_poll_sync changes.
*/
switch (urb->dev->speed) {
case USB_SPEED_SUPER_PLUS:
case USB_SPEED_SUPER: /* units are 125us */
data->intr_interval = usecs_to_jiffies(urb->interval * 125);
break;
default:
data->intr_interval = msecs_to_jiffies(urb->interval);
break;
}
done:
usb_free_urb(urb);
return err;
}
static void btusb_bulk_complete(struct urb *urb)
{
struct hci_dev *hdev = urb->context;
struct btusb_data *data = hci_get_drvdata(hdev);
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 (data->recv_bulk(data, urb->transfer_buffer,
urb->actual_length) < 0) {
bt_dev_err(hdev, "corrupted ACL packet");
hdev->stat.err_rx++;
}
} else if (urb->status == -ENOENT) {
/* Avoid suspend failed when usb_kill_urb */
return;
}
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_dev_err(hdev, "urb %p failed to resubmit (%d)",
urb, -err);
usb_unanchor_urb(urb);
}
}
static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct urb *urb;
unsigned char *buf;
unsigned int pipe;
int err, size = HCI_MAX_FRAME_SIZE;
BT_DBG("%s", hdev->name);
if (!data->bulk_rx_ep)
return -ENODEV;
urb = usb_alloc_urb(0, mem_flags);
if (!urb)
return -ENOMEM;
buf = kmalloc(size, mem_flags);
if (!buf) {
usb_free_urb(urb);
return -ENOMEM;
}
pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
btusb_bulk_complete, hdev);
urb->transfer_flags |= URB_FREE_BUFFER;
usb_mark_last_busy(data->udev);
usb_anchor_urb(urb, &data->bulk_anchor);
err = usb_submit_urb(urb, mem_flags);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p submission failed (%d)",
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 = hci_get_drvdata(hdev);
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 (btusb_recv_isoc(data, urb->transfer_buffer + offset,
length) < 0) {
bt_dev_err(hdev, "corrupted SCO packet");
hdev->stat.err_rx++;
}
}
} else if (urb->status == -ENOENT) {
/* Avoid suspend failed when usb_kill_urb */
return;
}
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_dev_err(hdev, "urb %p failed to resubmit (%d)",
urb, -err);
usb_unanchor_urb(urb);
}
}
static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
int mtu, struct btusb_data *data)
{
int i, offset = 0;
unsigned int interval;
BT_DBG("len %d mtu %d", len, mtu);
/* For mSBC ALT 6 setting the host will send the packet at continuous
* flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
* 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
* To maintain the rate we send 63bytes of usb packets alternatively for
* 7ms and 8ms to maintain the rate as 7.5ms.
*/
if (data->usb_alt6_packet_flow) {
interval = 7;
data->usb_alt6_packet_flow = false;
} else {
interval = 6;
data->usb_alt6_packet_flow = true;
}
for (i = 0; i < interval; i++) {
urb->iso_frame_desc[i].offset = offset;
urb->iso_frame_desc[i].length = offset;
}
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 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 = hci_get_drvdata(hdev);
struct urb *urb;
unsigned char *buf;
unsigned int pipe;
int err, size;
BT_DBG("%s", hdev->name);
if (!data->isoc_rx_ep)
return -ENODEV;
urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
if (!urb)
return -ENOMEM;
size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
BTUSB_MAX_ISOC_FRAMES;
buf = kmalloc(size, mem_flags);
if (!buf) {
usb_free_urb(urb);
return -ENOMEM;
}
pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
hdev, data->isoc_rx_ep->bInterval);
urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
__fill_isoc_descriptor(urb, size,
le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
usb_anchor_urb(urb, &data->isoc_anchor);
err = usb_submit_urb(urb, mem_flags);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p submission failed (%d)",
urb, -err);
usb_unanchor_urb(urb);
}
usb_free_urb(urb);
return err;
}
static void btusb_diag_complete(struct urb *urb)
{
struct hci_dev *hdev = urb->context;
struct btusb_data *data = hci_get_drvdata(hdev);
int err;
BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
urb->actual_length);
if (urb->status == 0) {
struct sk_buff *skb;
skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
if (skb) {
skb_put_data(skb, urb->transfer_buffer,
urb->actual_length);
hci_recv_diag(hdev, skb);
}
} else if (urb->status == -ENOENT) {
/* Avoid suspend failed when usb_kill_urb */
return;
}
if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
return;
usb_anchor_urb(urb, &data->diag_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_dev_err(hdev, "urb %p failed to resubmit (%d)",
urb, -err);
usb_unanchor_urb(urb);
}
}
static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct urb *urb;
unsigned char *buf;
unsigned int pipe;
int err, size = HCI_MAX_FRAME_SIZE;
BT_DBG("%s", hdev->name);
if (!data->diag_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->diag_rx_ep->bEndpointAddress);
usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
btusb_diag_complete, hdev);
urb->transfer_flags |= URB_FREE_BUFFER;
usb_mark_last_busy(data->udev);
usb_anchor_urb(urb, &data->diag_anchor);
err = usb_submit_urb(urb, mem_flags);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p submission failed (%d)",
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 = hci_get_drvdata(hdev);
unsigned long flags;
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 {
if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
hci_cmd_sync_cancel(hdev, -urb->status);
hdev->stat.err_tx++;
}
done:
spin_lock_irqsave(&data->txlock, flags);
data->tx_in_flight--;
spin_unlock_irqrestore(&data->txlock, flags);
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 = hci_get_drvdata(hdev);
int err;
BT_DBG("%s", hdev->name);
err = usb_autopm_get_interface(data->intf);
if (err < 0)
return err;
/* Patching USB firmware files prior to starting any URBs of HCI path
* It is more safe to use USB bulk channel for downloading USB patch
*/
if (data->setup_on_usb) {
err = data->setup_on_usb(hdev);
if (err < 0)
goto setup_fail;
}
data->intf->needs_remote_wakeup = 1;
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);
if (data->diag) {
if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
set_bit(BTUSB_DIAG_RUNNING, &data->flags);
}
done:
usb_autopm_put_interface(data->intf);
return 0;
failed:
clear_bit(BTUSB_INTR_RUNNING, &data->flags);
setup_fail:
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);
usb_kill_anchored_urbs(&data->diag_anchor);
usb_kill_anchored_urbs(&data->ctrl_anchor);
}
static int btusb_close(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
int err;
BT_DBG("%s", hdev->name);
cancel_delayed_work(&data->rx_work);
cancel_work_sync(&data->work);
cancel_work_sync(&data->waker);
skb_queue_purge(&data->acl_q);
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
clear_bit(BTUSB_BULK_RUNNING, &data->flags);
clear_bit(BTUSB_INTR_RUNNING, &data->flags);
clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
btusb_stop_traffic(data);
btusb_free_frags(data);
err = usb_autopm_get_interface(data->intf);
if (err < 0)
goto failed;
data->intf->needs_remote_wakeup = 0;
/* Enable remote wake up for auto-suspend */
if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
data->intf->needs_remote_wakeup = 1;
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 = hci_get_drvdata(hdev);
BT_DBG("%s", hdev->name);
cancel_delayed_work(&data->rx_work);
skb_queue_purge(&data->acl_q);
usb_kill_anchored_urbs(&data->tx_anchor);
btusb_free_frags(data);
return 0;
}
static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct usb_ctrlrequest *dr;
struct urb *urb;
unsigned int pipe;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return ERR_PTR(-ENOMEM);
dr = kmalloc(sizeof(*dr), GFP_KERNEL);
if (!dr) {
usb_free_urb(urb);
return ERR_PTR(-ENOMEM);
}
dr->bRequestType = data->cmdreq_type;
dr->bRequest = data->cmdreq;
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);
skb->dev = (void *)hdev;
return urb;
}
static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct urb *urb;
unsigned int pipe;
if (!data->bulk_tx_ep)
return ERR_PTR(-ENODEV);
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return ERR_PTR(-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);
skb->dev = (void *)hdev;
return urb;
}
static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct urb *urb;
unsigned int pipe;
if (!data->isoc_tx_ep)
return ERR_PTR(-ENODEV);
urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
if (!urb)
return ERR_PTR(-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;
if (data->isoc_altsetting == 6)
__fill_isoc_descriptor_msbc(urb, skb->len,
le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
data);
else
__fill_isoc_descriptor(urb, skb->len,
le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
skb->dev = (void *)hdev;
return urb;
}
static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
int err;
usb_anchor_urb(urb, &data->tx_anchor);
err = usb_submit_urb(urb, GFP_KERNEL);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p submission failed (%d)",
urb, -err);
kfree(urb->setup_packet);
usb_unanchor_urb(urb);
} else {
usb_mark_last_busy(data->udev);
}
usb_free_urb(urb);
return err;
}
static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
unsigned long flags;
bool suspending;
spin_lock_irqsave(&data->txlock, flags);
suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
if (!suspending)
data->tx_in_flight++;
spin_unlock_irqrestore(&data->txlock, flags);
if (!suspending)
return submit_tx_urb(hdev, urb);
usb_anchor_urb(urb, &data->deferred);
schedule_work(&data->waker);
usb_free_urb(urb);
return 0;
}
static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
{
struct urb *urb;
BT_DBG("%s", hdev->name);
switch (hci_skb_pkt_type(skb)) {
case HCI_COMMAND_PKT:
urb = alloc_ctrl_urb(hdev, skb);
if (IS_ERR(urb))
return PTR_ERR(urb);
hdev->stat.cmd_tx++;
return submit_or_queue_tx_urb(hdev, urb);
case HCI_ACLDATA_PKT:
urb = alloc_bulk_urb(hdev, skb);
if (IS_ERR(urb))
return PTR_ERR(urb);
hdev->stat.acl_tx++;
return submit_or_queue_tx_urb(hdev, urb);
case HCI_SCODATA_PKT:
if (hci_conn_num(hdev, SCO_LINK) < 1)
return -ENODEV;
urb = alloc_isoc_urb(hdev, skb);
if (IS_ERR(urb))
return PTR_ERR(urb);
hdev->stat.sco_tx++;
return submit_tx_urb(hdev, urb);
}
return -EILSEQ;
}
static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
{
struct btusb_data *data = hci_get_drvdata(hdev);
BT_DBG("%s evt %d", hdev->name, evt);
if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
data->sco_num = hci_conn_num(hdev, SCO_LINK);
data->air_mode = evt;
schedule_work(&data->work);
}
}
static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
{
struct btusb_data *data = hci_get_drvdata(hdev);
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, data->isoc_ifnum, altsetting);
if (err < 0) {
bt_dev_err(hdev, "setting interface failed (%d)", -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_dev_err(hdev, "invalid SCO descriptors");
return -ENODEV;
}
return 0;
}
static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
{
struct btusb_data *data = hci_get_drvdata(hdev);
int err;
if (data->isoc_altsetting != new_alts) {
unsigned long flags;
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
usb_kill_anchored_urbs(&data->isoc_anchor);
/* When isochronous alternate setting needs to be
* changed, because SCO connection has been added
* or removed, a packet fragment may be left in the
* reassembling state. This could lead to wrongly
* assembled fragments.
*
* Clear outstanding fragment when selecting a new
* alternate setting.
*/
spin_lock_irqsave(&data->rxlock, flags);
kfree_skb(data->sco_skb);
data->sco_skb = NULL;
spin_unlock_irqrestore(&data->rxlock, flags);
err = __set_isoc_interface(hdev, new_alts);
if (err < 0)
return err;
}
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);
}
return 0;
}
static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
int alt)
{
struct usb_interface *intf = data->isoc;
int i;
BT_DBG("Looking for Alt no :%d", alt);
if (!intf)
return NULL;
for (i = 0; i < intf->num_altsetting; i++) {
if (intf->altsetting[i].desc.bAlternateSetting == alt)
return &intf->altsetting[i];
}
return NULL;
}
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 new_alts = 0;
int err;
if (data->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->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
if (hdev->voice_setting & 0x0020) {
static const int alts[3] = { 2, 4, 5 };
new_alts = alts[data->sco_num - 1];
} else {
new_alts = data->sco_num;
}
} else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
/* Bluetooth USB spec recommends alt 6 (63 bytes), but
* many adapters do not support it. Alt 1 appears to
* work for all adapters that do not have alt 6, and
* which work with WBS at all. Some devices prefer
* alt 3 (HCI payload >= 60 Bytes let air packet
* data satisfy 60 bytes), requiring
* MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
* see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
*/
if (btusb_find_altsetting(data, 6))
new_alts = 6;
else if (btusb_find_altsetting(data, 3) &&
hdev->sco_mtu >= 72 &&
test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
new_alts = 3;
else
new_alts = 1;
}
if (btusb_switch_alt_setting(hdev, new_alts) < 0)
bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
} 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 void btusb_rx_work(struct work_struct *work)
{
struct btusb_data *data = container_of(work, struct btusb_data,
rx_work.work);
struct sk_buff *skb;
/* Dequeue ACL data received during the interval */
while ((skb = skb_dequeue(&data->acl_q)))
data->recv_acl(data->hdev, skb);
}
static int btusb_setup_bcm92035(struct hci_dev *hdev)
{
struct sk_buff *skb;
u8 val = 0x00;
BT_DBG("%s", hdev->name);
skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
if (IS_ERR(skb))
bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
else
kfree_skb(skb);
return 0;
}
static int btusb_setup_csr(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
struct hci_rp_read_local_version *rp;
struct sk_buff *skb;
bool is_fake = false;
int ret;
BT_DBG("%s", hdev->name);
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
int err = PTR_ERR(skb);
bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
return err;
}
if (skb->len != sizeof(struct hci_rp_read_local_version)) {
bt_dev_err(hdev, "CSR: Local version length mismatch");
kfree_skb(skb);
return -EIO;
}
rp = (struct hci_rp_read_local_version *)skb->data;
/* Detect a wide host of Chinese controllers that aren't CSR.
*
* Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
*
* The main thing they have in common is that these are really popular low-cost
* options that support newer Bluetooth versions but rely on heavy VID/PID
* squatting of this poor old Bluetooth 1.1 device. Even sold as such.
*
* We detect actual CSR devices by checking that the HCI manufacturer code
* is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
* HCI rev values always match. As they both store the firmware number.
*/
if (le16_to_cpu(rp->manufacturer) != 10 ||
le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
is_fake = true;
/* Known legit CSR firmware build numbers and their supported BT versions:
* - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
* - 1.2 (0x2) -> 0x04d9, 0x0529
* - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c
* - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
* - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb
*
* e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
* support BT 1.1 only; so it's a dead giveaway when some
* third-party BT 4.0 dongle reuses it.
*/
else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
is_fake = true;
else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
is_fake = true;
else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
is_fake = true;
else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
is_fake = true;
else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
is_fake = true;
/* Other clones which beat all the above checks */
else if (bcdDevice == 0x0134 &&
le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
is_fake = true;
if (is_fake) {
bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
/* Generally these clones have big discrepancies between
* advertised features and what's actually supported.
* Probably will need to be expanded in the future;
* without these the controller will lock up.
*/
set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
/* Clear the reset quirk since this is not an actual
* early Bluetooth 1.1 device from CSR.
*/
clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
/*
* Special workaround for these BT 4.0 chip clones, and potentially more:
*
* - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012)
* - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
*
* These controllers are really messed-up.
*
* 1. Their bulk RX endpoint will never report any data unless
* the device was suspended at least once (yes, really).
* 2. They will not wakeup when autosuspended and receiving data
* on their bulk RX endpoint from e.g. a keyboard or mouse
* (IOW remote-wakeup support is broken for the bulk endpoint).
*
* To fix 1. enable runtime-suspend, force-suspend the
* HCI and then wake-it up by disabling runtime-suspend.
*
* To fix 2. clear the HCI's can_wake flag, this way the HCI
* will still be autosuspended when it is not open.
*
* --
*
* Because these are widespread problems we prefer generic solutions; so
* apply this initialization quirk to every controller that gets here,
* it should be harmless. The alternative is to not work at all.
*/
pm_runtime_allow(&data->udev->dev);
ret = pm_runtime_suspend(&data->udev->dev);
if (ret >= 0)
msleep(200);
else
bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
pm_runtime_forbid(&data->udev->dev);
device_set_wakeup_capable(&data->udev->dev, false);
/* Re-enable autosuspend if this was requested */
if (enable_autosuspend)
usb_enable_autosuspend(data->udev);
}
kfree_skb(skb);
return 0;
}
static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
{
struct sk_buff *skb;
struct hci_event_hdr *hdr;
struct hci_ev_cmd_complete *evt;
skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
if (!skb)
return -ENOMEM;
hdr = skb_put(skb, sizeof(*hdr));
hdr->evt = HCI_EV_CMD_COMPLETE;
hdr->plen = sizeof(*evt) + 1;
evt = skb_put(skb, sizeof(*evt));
evt->ncmd = 0x01;
evt->opcode = cpu_to_le16(opcode);
skb_put_u8(skb, 0x00);
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
return hci_recv_frame(hdev, skb);
}
static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
int count)
{
struct hci_dev *hdev = data->hdev;
/* When the device is in bootloader mode, then it can send
* events via the bulk endpoint. These events are treated the
* same way as the ones received from the interrupt endpoint.
*/
if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
return btusb_recv_intr(data, buffer, count);
return btusb_recv_bulk(data, buffer, count);
}
static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
{
if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
struct hci_event_hdr *hdr = (void *)skb->data;
if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
hdr->plen > 0) {
const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
switch (skb->data[2]) {
case 0x02:
/* When switching to the operational firmware
* the device sends a vendor specific event
* indicating that the bootup completed.
*/
btintel_bootup(hdev, ptr, len);
break;
case 0x06:
/* When the firmware loading completes the
* device sends out a vendor specific event
* indicating the result of the firmware
* loading.
*/
btintel_secure_send_result(hdev, ptr, len);
break;
}
}
}
return hci_recv_frame(hdev, skb);
}
static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
{
struct urb *urb;
BT_DBG("%s", hdev->name);
switch (hci_skb_pkt_type(skb)) {
case HCI_COMMAND_PKT:
if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
struct hci_command_hdr *cmd = (void *)skb->data;
__u16 opcode = le16_to_cpu(cmd->opcode);
/* When in bootloader mode and the command 0xfc09
* is received, it needs to be send down the
* bulk endpoint. So allocate a bulk URB instead.
*/
if (opcode == 0xfc09)
urb = alloc_bulk_urb(hdev, skb);
else
urb = alloc_ctrl_urb(hdev, skb);
/* When the 0xfc01 command is issued to boot into
* the operational firmware, it will actually not
* send a command complete event. To keep the flow
* control working inject that event here.
*/
if (opcode == 0xfc01)
inject_cmd_complete(hdev, opcode);
} else {
urb = alloc_ctrl_urb(hdev, skb);
}
if (IS_ERR(urb))
return PTR_ERR(urb);
hdev->stat.cmd_tx++;
return submit_or_queue_tx_urb(hdev, urb);
case HCI_ACLDATA_PKT:
urb = alloc_bulk_urb(hdev, skb);
if (IS_ERR(urb))
return PTR_ERR(urb);
hdev->stat.acl_tx++;
return submit_or_queue_tx_urb(hdev, urb);
case HCI_SCODATA_PKT:
if (hci_conn_num(hdev, SCO_LINK) < 1)
return -ENODEV;
urb = alloc_isoc_urb(hdev, skb);
if (IS_ERR(urb))
return PTR_ERR(urb);
hdev->stat.sco_tx++;
return submit_tx_urb(hdev, urb);
}
return -EILSEQ;
}
/* UHW CR mapping */
#define MTK_BT_MISC 0x70002510
#define MTK_BT_SUBSYS_RST 0x70002610
#define MTK_UDMA_INT_STA_BT 0x74000024
#define MTK_UDMA_INT_STA_BT1 0x74000308
#define MTK_BT_WDT_STATUS 0x740003A0
#define MTK_EP_RST_OPT 0x74011890
#define MTK_EP_RST_IN_OUT_OPT 0x00010001
#define MTK_BT_RST_DONE 0x00000100
#define MTK_BT_RESET_WAIT_MS 100
#define MTK_BT_RESET_NUM_TRIES 10
static void btusb_mtk_wmt_recv(struct urb *urb)
{
struct hci_dev *hdev = urb->context;
struct btusb_data *data = hci_get_drvdata(hdev);
struct sk_buff *skb;
int err;
if (urb->status == 0 && urb->actual_length > 0) {
hdev->stat.byte_rx += urb->actual_length;
/* WMT event shouldn't be fragmented and the size should be
* less than HCI_WMT_MAX_EVENT_SIZE.
*/
skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
if (!skb) {
hdev->stat.err_rx++;
kfree(urb->setup_packet);
return;
}
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
/* When someone waits for the WMT event, the skb is being cloned
* and being processed the events from there then.
*/
if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
data->evt_skb = skb_clone(skb, GFP_ATOMIC);
if (!data->evt_skb) {
kfree_skb(skb);
kfree(urb->setup_packet);
return;
}
}
err = hci_recv_frame(hdev, skb);
if (err < 0) {
kfree_skb(data->evt_skb);
data->evt_skb = NULL;
kfree(urb->setup_packet);
return;
}
if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
&data->flags)) {
/* Barrier to sync with other CPUs */
smp_mb__after_atomic();
wake_up_bit(&data->flags,
BTUSB_TX_WAIT_VND_EVT);
}
kfree(urb->setup_packet);
return;
} else if (urb->status == -ENOENT) {
/* Avoid suspend failed when usb_kill_urb */
return;
}
usb_mark_last_busy(data->udev);
/* The URB complete handler is still called with urb->actual_length = 0
* when the event is not available, so we should keep re-submitting
* URB until WMT event returns, Also, It's necessary to wait some time
* between the two consecutive control URBs to relax the target device
* to generate the event. Otherwise, the WMT event cannot return from
* the device successfully.
*/
udelay(500);
usb_anchor_urb(urb, &data->ctrl_anchor);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err < 0) {
kfree(urb->setup_packet);
/* -EPERM: urb is being killed;
* -ENODEV: device got disconnected
*/
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
urb, -err);
usb_unanchor_urb(urb);
}
}
static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct usb_ctrlrequest *dr;
unsigned char *buf;
int err, size = 64;
unsigned int pipe;
struct urb *urb;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return -ENOMEM;
dr = kmalloc(sizeof(*dr), GFP_KERNEL);
if (!dr) {
usb_free_urb(urb);
return -ENOMEM;
}
dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
dr->bRequest = 1;
dr->wIndex = cpu_to_le16(0);
dr->wValue = cpu_to_le16(48);
dr->wLength = cpu_to_le16(size);
buf = kmalloc(size, GFP_KERNEL);
if (!buf) {
kfree(dr);
usb_free_urb(urb);
return -ENOMEM;
}
pipe = usb_rcvctrlpipe(data->udev, 0);
usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
buf, size, btusb_mtk_wmt_recv, hdev);
urb->transfer_flags |= URB_FREE_BUFFER;
usb_anchor_urb(urb, &data->ctrl_anchor);
err = usb_submit_urb(urb, GFP_KERNEL);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
bt_dev_err(hdev, "urb %p submission failed (%d)",
urb, -err);
usb_unanchor_urb(urb);
}
usb_free_urb(urb);
return err;
}
static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
struct btmtk_hci_wmt_params *wmt_params)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
u32 hlen, status = BTMTK_WMT_INVALID;
struct btmtk_hci_wmt_evt *wmt_evt;
struct btmtk_hci_wmt_cmd *wc;
struct btmtk_wmt_hdr *hdr;
int err;
/* Send the WMT command and wait until the WMT event returns */
hlen = sizeof(*hdr) + wmt_params->dlen;
if (hlen > 255)
return -EINVAL;
wc = kzalloc(hlen, GFP_KERNEL);
if (!wc)
return -ENOMEM;
hdr = &wc->hdr;
hdr->dir = 1;
hdr->op = wmt_params->op;
hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
hdr->flag = wmt_params->flag;
memcpy(wc->data, wmt_params->data, wmt_params->dlen);
set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
if (err < 0) {
clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
goto err_free_wc;
}
/* Submit control IN URB on demand to process the WMT event */
err = btusb_mtk_submit_wmt_recv_urb(hdev);
if (err < 0)
goto err_free_wc;
/* The vendor specific WMT commands are all answered by a vendor
* specific event and will have the Command Status or Command
* Complete as with usual HCI command flow control.
*
* After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
* state to be cleared. The driver specific event receive routine
* will clear that state and with that indicate completion of the
* WMT command.
*/
err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
if (err == -EINTR) {
bt_dev_err(hdev, "Execution of wmt command interrupted");
clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
goto err_free_wc;
}
if (err) {
bt_dev_err(hdev, "Execution of wmt command timed out");
clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
err = -ETIMEDOUT;
goto err_free_wc;
}
/* Parse and handle the return WMT event */
wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
if (wmt_evt->whdr.op != hdr->op) {
bt_dev_err(hdev, "Wrong op received %d expected %d",
wmt_evt->whdr.op, hdr->op);
err = -EIO;
goto err_free_skb;
}
switch (wmt_evt->whdr.op) {
case BTMTK_WMT_SEMAPHORE:
if (wmt_evt->whdr.flag == 2)
status = BTMTK_WMT_PATCH_UNDONE;
else
status = BTMTK_WMT_PATCH_DONE;
break;
case BTMTK_WMT_FUNC_CTRL:
wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
status = BTMTK_WMT_ON_DONE;
else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
status = BTMTK_WMT_ON_PROGRESS;
else
status = BTMTK_WMT_ON_UNDONE;
break;
case BTMTK_WMT_PATCH_DWNLD:
if (wmt_evt->whdr.flag == 2)
status = BTMTK_WMT_PATCH_DONE;
else if (wmt_evt->whdr.flag == 1)
status = BTMTK_WMT_PATCH_PROGRESS;
else
status = BTMTK_WMT_PATCH_UNDONE;
break;
}
if (wmt_params->status)
*wmt_params->status = status;
err_free_skb:
kfree_skb(data->evt_skb);
data->evt_skb = NULL;
err_free_wc:
kfree(wc);
return err;
}
static int btusb_mtk_func_query(struct hci_dev *hdev)
{
struct btmtk_hci_wmt_params wmt_params;
int status, err;
u8 param = 0;
/* Query whether the function is enabled */
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
wmt_params.flag = 4;
wmt_params.dlen = sizeof(param);
wmt_params.data = &param;
wmt_params.status = &status;
err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to query function status (%d)", err);
return err;
}
return status;
}
static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
{
struct hci_dev *hdev = data->hdev;
int pipe, err;
void *buf;
buf = kzalloc(4, GFP_KERNEL);
if (!buf)
return -ENOMEM;
put_unaligned_le32(val, buf);
pipe = usb_sndctrlpipe(data->udev, 0);
err = usb_control_msg(data->udev, pipe, 0x02,
0x5E,
reg >> 16, reg & 0xffff,
buf, 4, USB_CTRL_SET_TIMEOUT);
if (err < 0) {
bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
goto err_free_buf;
}
err_free_buf:
kfree(buf);
return err;
}
static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
{
struct hci_dev *hdev = data->hdev;
int pipe, err;
void *buf;
buf = kzalloc(4, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pipe = usb_rcvctrlpipe(data->udev, 0);
err = usb_control_msg(data->udev, pipe, 0x01,
0xDE,
reg >> 16, reg & 0xffff,
buf, 4, USB_CTRL_SET_TIMEOUT);
if (err < 0) {
bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
goto err_free_buf;
}
*val = get_unaligned_le32(buf);
bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
err_free_buf:
kfree(buf);
return err;
}
static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
{
int pipe, err, size = sizeof(u32);
void *buf;
buf = kzalloc(size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pipe = usb_rcvctrlpipe(data->udev, 0);
err = usb_control_msg(data->udev, pipe, 0x63,
USB_TYPE_VENDOR | USB_DIR_IN,
reg >> 16, reg & 0xffff,
buf, size, USB_CTRL_SET_TIMEOUT);
if (err < 0)
goto err_free_buf;
*val = get_unaligned_le32(buf);
err_free_buf:
kfree(buf);
return err;
}
static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
{
return btusb_mtk_reg_read(data, reg, id);
}
static int btusb_mtk_setup(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct btmtk_hci_wmt_params wmt_params;
ktime_t calltime, delta, rettime;
struct btmtk_tci_sleep tci_sleep;
unsigned long long duration;
struct sk_buff *skb;
const char *fwname;
int err, status;
u32 dev_id;
char fw_bin_name[64];
u32 fw_version = 0;
u8 param;
calltime = ktime_get();
err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
if (err < 0) {
bt_dev_err(hdev, "Failed to get device id (%d)", err);
return err;
}
if (!dev_id) {
err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
if (err < 0) {
bt_dev_err(hdev, "Failed to get device id (%d)", err);
return err;
}
err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
if (err < 0) {
bt_dev_err(hdev, "Failed to get fw version (%d)", err);
return err;
}
}
switch (dev_id) {
case 0x7663:
fwname = FIRMWARE_MT7663;
break;
case 0x7668:
fwname = FIRMWARE_MT7668;
break;
case 0x7922:
case 0x7961:
snprintf(fw_bin_name, sizeof(fw_bin_name),
"mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
dev_id & 0xffff, (fw_version & 0xff) + 1);
err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
btusb_mtk_hci_wmt_sync);
if (err < 0) {
bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
return err;
}
/* It's Device EndPoint Reset Option Register */
btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
/* Enable Bluetooth protocol */
param = 1;
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
wmt_params.flag = 0;
wmt_params.dlen = sizeof(param);
wmt_params.data = &param;
wmt_params.status = NULL;
err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
}
hci_set_msft_opcode(hdev, 0xFD30);
hci_set_aosp_capable(hdev);
goto done;
default:
bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
dev_id);
return -ENODEV;
}
/* Query whether the firmware is already download */
wmt_params.op = BTMTK_WMT_SEMAPHORE;
wmt_params.flag = 1;
wmt_params.dlen = 0;
wmt_params.data = NULL;
wmt_params.status = &status;
err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
return err;
}
if (status == BTMTK_WMT_PATCH_DONE) {
bt_dev_info(hdev, "firmware already downloaded");
goto ignore_setup_fw;
}
/* Setup a firmware which the device definitely requires */
err = btmtk_setup_firmware(hdev, fwname,
btusb_mtk_hci_wmt_sync);
if (err < 0)
return err;
ignore_setup_fw:
err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2000, 5000000);
/* -ETIMEDOUT happens */
if (err < 0)
return err;
/* The other errors happen in btusb_mtk_func_query */
if (status < 0)
return status;
if (status == BTMTK_WMT_ON_DONE) {
bt_dev_info(hdev, "function already on");
goto ignore_func_on;
}
/* Enable Bluetooth protocol */
param = 1;
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
wmt_params.flag = 0;
wmt_params.dlen = sizeof(param);
wmt_params.data = &param;
wmt_params.status = NULL;
err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
}
ignore_func_on:
/* Apply the low power environment setup */
tci_sleep.mode = 0x5;
tci_sleep.duration = cpu_to_le16(0x640);
tci_sleep.host_duration = cpu_to_le16(0x640);
tci_sleep.host_wakeup_pin = 0;
tci_sleep.time_compensation = 0;
skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
return err;
}
kfree_skb(skb);
done:
rettime = ktime_get();
delta = ktime_sub(rettime, calltime);
duration = (unsigned long long)ktime_to_ns(delta) >> 10;
bt_dev_info(hdev, "Device setup in %llu usecs", duration);
return 0;
}
static int btusb_mtk_shutdown(struct hci_dev *hdev)
{
struct btmtk_hci_wmt_params wmt_params;
u8 param = 0;
int err;
/* Disable the device */
wmt_params.op = BTMTK_WMT_FUNC_CTRL;
wmt_params.flag = 0;
wmt_params.dlen = sizeof(param);
wmt_params.data = &param;
wmt_params.status = NULL;
err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
}
return 0;
}
static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
u32 val;
int err, retry = 0;
/* It's MediaTek specific bluetooth reset mechanism via USB */
if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
bt_dev_err(hdev, "last reset failed? Not resetting again");
return;
}
err = usb_autopm_get_interface(data->intf);
if (err < 0)
return;
btusb_stop_traffic(data);
usb_kill_anchored_urbs(&data->tx_anchor);
/* It's Device EndPoint Reset Option Register */
bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
/* Reset the bluetooth chip via USB interface. */
btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
/* MT7921 need to delay 20ms between toggle reset bit */
msleep(20);
btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
/* Poll the register until reset is completed */
do {
btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
if (val & MTK_BT_RST_DONE) {
bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
break;
}
bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
retry++;
msleep(MTK_BT_RESET_WAIT_MS);
} while (retry < MTK_BT_RESET_NUM_TRIES);
btusb_mtk_id_get(data, 0x70010200, &val);
if (!val)
bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
usb_queue_reset_device(data->intf);
clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
}
static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
switch (handle) {
case 0xfc6f: /* Firmware dump from device */
/* When the firmware hangs, the device can no longer
* suspend and thus disable auto-suspend.
*/
usb_disable_autosuspend(data->udev);
fallthrough;
case 0x05ff: /* Firmware debug logging 1 */
case 0x05fe: /* Firmware debug logging 2 */
return hci_recv_diag(hdev, skb);
}
return hci_recv_frame(hdev, skb);
}
#ifdef CONFIG_PM
/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
static int marvell_config_oob_wake(struct hci_dev *hdev)
{
struct sk_buff *skb;
struct btusb_data *data = hci_get_drvdata(hdev);
struct device *dev = &data->udev->dev;
u16 pin, gap, opcode;
int ret;
u8 cmd[5];
/* Move on if no wakeup pin specified */
if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
return 0;
/* Vendor specific command to configure a GPIO as wake-up pin */
opcode = hci_opcode_pack(0x3F, 0x59);
cmd[0] = opcode & 0xFF;
cmd[1] = opcode >> 8;
cmd[2] = 2; /* length of parameters that follow */
cmd[3] = pin;
cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
if (!skb) {
bt_dev_err(hdev, "%s: No memory", __func__);
return -ENOMEM;
}
skb_put_data(skb, cmd, sizeof(cmd));
hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
ret = btusb_send_frame(hdev, skb);
if (ret) {
bt_dev_err(hdev, "%s: configuration failed", __func__);
kfree_skb(skb);
return ret;
}
return 0;
}
#endif
static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
u8 buf[8];
long ret;
buf[0] = 0xfe;
buf[1] = sizeof(bdaddr_t);
memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
ret);
return ret;
}
kfree_skb(skb);
return 0;
}
static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
u8 buf[10];
long ret;
buf[0] = 0x01;
buf[1] = 0x01;
buf[2] = 0x00;
buf[3] = sizeof(bdaddr_t);
memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
bt_dev_err(hdev, "Change address command failed (%ld)", ret);
return ret;
}
kfree_skb(skb);
return 0;
}
static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
u8 buf[6];
long ret;
memcpy(buf, bdaddr, sizeof(bdaddr_t));
skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
bt_dev_err(hdev, "Change address command failed (%ld)", ret);
return ret;
}
kfree_skb(skb);
return 0;
}
#define QCA_DFU_PACKET_LEN 4096
#define QCA_GET_TARGET_VERSION 0x09
#define QCA_CHECK_STATUS 0x05
#define QCA_DFU_DOWNLOAD 0x01
#define QCA_SYSCFG_UPDATED 0x40
#define QCA_PATCH_UPDATED 0x80
#define QCA_DFU_TIMEOUT 3000
#define QCA_FLAG_MULTI_NVM 0x80
#define QCA_BT_RESET_WAIT_MS 100
#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
struct qca_version {
__le32 rom_version;
__le32 patch_version;
__le32 ram_version;
__u8 chip_id;
__u8 platform_id;
__le16 flag;
__u8 reserved[4];
} __packed;
struct qca_rampatch_version {
__le16 rom_version_high;
__le16 rom_version_low;
__le16 patch_version;
} __packed;
struct qca_device_info {
u32 rom_version;
u8 rampatch_hdr; /* length of header in rampatch */
u8 nvm_hdr; /* length of header in NVM */
u8 ver_offset; /* offset of version structure in rampatch */
};
static const struct qca_device_info qca_devices_table[] = {
{ 0x00000100, 20, 4, 8 }, /* Rome 1.0 */
{ 0x00000101, 20, 4, 8 }, /* Rome 1.1 */
{ 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
{ 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
{ 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
{ 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
{ 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
{ 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
{ 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
};
static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
void *data, u16 size)
{
int pipe, err;
u8 *buf;
buf = kmalloc(size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
/* Found some of USB hosts have IOT issues with ours so that we should
* not wait until HCI layer is ready.
*/
pipe = usb_rcvctrlpipe(udev, 0);
err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
if (err < 0) {
dev_err(&udev->dev, "Failed to access otp area (%d)", err);
goto done;
}
memcpy(data, buf, size);
done:
kfree(buf);
return err;
}
static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
const struct firmware *firmware,
size_t hdr_size)
{
struct btusb_data *btdata = hci_get_drvdata(hdev);
struct usb_device *udev = btdata->udev;
size_t count, size, sent = 0;
int pipe, len, err;
u8 *buf;
buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
if (!buf)
return -ENOMEM;
count = firmware->size;
size = min_t(size_t, count, hdr_size);
memcpy(buf, firmware->data, size);
/* USB patches should go down to controller through USB path
* because binary format fits to go down through USB channel.
* USB control path is for patching headers and USB bulk is for
* patch body.
*/
pipe = usb_sndctrlpipe(udev, 0);
err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
if (err < 0) {
bt_dev_err(hdev, "Failed to send headers (%d)", err);
goto done;
}
sent += size;
count -= size;
/* ep2 need time to switch from function acl to function dfu,
* so we add 20ms delay here.
*/
msleep(20);
while (count) {
size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
memcpy(buf, firmware->data + sent, size);
pipe = usb_sndbulkpipe(udev, 0x02);
err = usb_bulk_msg(udev, pipe, buf, size, &len,
QCA_DFU_TIMEOUT);
if (err < 0) {
bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
sent, firmware->size, err);
break;
}
if (size != len) {
bt_dev_err(hdev, "Failed to get bulk buffer");
err = -EILSEQ;
break;
}
sent += size;
count -= size;
}
done:
kfree(buf);
return err;
}
static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
struct qca_version *ver,
const struct qca_device_info *info)
{
struct qca_rampatch_version *rver;
const struct firmware *fw;
u32 ver_rom, ver_patch, rver_rom;
u16 rver_rom_low, rver_rom_high, rver_patch;
char fwname[64];
int err;
ver_rom = le32_to_cpu(ver->rom_version);
ver_patch = le32_to_cpu(ver->patch_version);
snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
err = request_firmware(&fw, fwname, &hdev->dev);
if (err) {
bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
fwname, err);
return err;
}
bt_dev_info(hdev, "using rampatch file: %s", fwname);
rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
rver_rom_low = le16_to_cpu(rver->rom_version_low);
rver_patch = le16_to_cpu(rver->patch_version);
if (ver_rom & ~0xffffU) {
rver_rom_high = le16_to_cpu(rver->rom_version_high);
rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
} else {
rver_rom = rver_rom_low;
}
bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
"firmware rome 0x%x build 0x%x",
rver_rom, rver_patch, ver_rom, ver_patch);
if (rver_rom != ver_rom || rver_patch <= ver_patch) {
bt_dev_err(hdev, "rampatch file version did not match with firmware");
err = -EINVAL;
goto done;
}
err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
done:
release_firmware(fw);
return err;
}
static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
const struct qca_version *ver)
{
u32 rom_version = le32_to_cpu(ver->rom_version);
u16 flag = le16_to_cpu(ver->flag);
if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
/* The board_id should be split into two bytes
* The 1st byte is chip ID, and the 2nd byte is platform ID
* For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
* we have several platforms, and platform IDs are continuously added
* Platform ID:
* 0x00 is for Mobile
* 0x01 is for X86
* 0x02 is for Automotive
* 0x03 is for Consumer electronic
*/
u16 board_id = (ver->chip_id << 8) + ver->platform_id;
const char *variant;
switch (le32_to_cpu(ver->ram_version)) {
case WCN6855_2_0_RAM_VERSION_GF:
case WCN6855_2_1_RAM_VERSION_GF:
variant = "_gf";
break;
default:
variant = "";
break;
}
if (board_id == 0) {
snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
rom_version, variant);
} else {
snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
rom_version, variant, board_id);
}
} else {
snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
rom_version);
}
}
static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
struct qca_version *ver,
const struct qca_device_info *info)
{
const struct firmware *fw;
char fwname[64];
int err;
btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
err = request_firmware(&fw, fwname, &hdev->dev);
if (err) {
bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
fwname, err);
return err;
}
bt_dev_info(hdev, "using NVM file: %s", fwname);
err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
release_firmware(fw);
return err;
}
/* identify the ROM version and check whether patches are needed */
static bool btusb_qca_need_patch(struct usb_device *udev)
{
struct qca_version ver;
if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
sizeof(ver)) < 0)
return false;
/* only low ROM versions need patches */
return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
}
static int btusb_setup_qca(struct hci_dev *hdev)
{
struct btusb_data *btdata = hci_get_drvdata(hdev);
struct usb_device *udev = btdata->udev;
const struct qca_device_info *info = NULL;
struct qca_version ver;
u32 ver_rom;
u8 status;
int i, err;
err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
sizeof(ver));
if (err < 0)
return err;
ver_rom = le32_to_cpu(ver.rom_version);
for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
if (ver_rom == qca_devices_table[i].rom_version)
info = &qca_devices_table[i];
}
if (!info) {
/* If the rom_version is not matched in the qca_devices_table
* and the high ROM version is not zero, we assume this chip no
* need to load the rampatch and nvm.
*/
if (ver_rom & ~0xffffU)
return 0;
bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
return -ENODEV;
}
err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
sizeof(status));
if (err < 0)
return err;
if (!(status & QCA_PATCH_UPDATED)) {
err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
if (err < 0)
return err;
}
err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
sizeof(ver));
if (err < 0)
return err;
if (!(status & QCA_SYSCFG_UPDATED)) {
err = btusb_setup_qca_load_nvm(hdev, &ver, info);
if (err < 0)
return err;
/* WCN6855 2.1 will reset to apply firmware downloaded here, so
* wait ~100ms for reset Done then go ahead, otherwise, it maybe
* cause potential enable failure.
*/
if (info->rom_version == 0x00130201)
msleep(QCA_BT_RESET_WAIT_MS);
}
return 0;
}
static inline int __set_diag_interface(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct usb_interface *intf = data->diag;
int i;
if (!data->diag)
return -ENODEV;
data->diag_tx_ep = NULL;
data->diag_rx_ep = NULL;
for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
struct usb_endpoint_descriptor *ep_desc;
ep_desc = &intf->cur_altsetting->endpoint[i].desc;
if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
data->diag_tx_ep = ep_desc;
continue;
}
if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
data->diag_rx_ep = ep_desc;
continue;
}
}
if (!data->diag_tx_ep || !data->diag_rx_ep) {
bt_dev_err(hdev, "invalid diagnostic descriptors");
return -ENODEV;
}
return 0;
}
static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct sk_buff *skb;
struct urb *urb;
unsigned int pipe;
if (!data->diag_tx_ep)
return ERR_PTR(-ENODEV);
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return ERR_PTR(-ENOMEM);
skb = bt_skb_alloc(2, GFP_KERNEL);
if (!skb) {
usb_free_urb(urb);
return ERR_PTR(-ENOMEM);
}
skb_put_u8(skb, 0xf0);
skb_put_u8(skb, enable);
pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
usb_fill_bulk_urb(urb, data->udev, pipe,
skb->data, skb->len, btusb_tx_complete, skb);
skb->dev = (void *)hdev;
return urb;
}
static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct urb *urb;
if (!data->diag)
return -ENODEV;
if (!test_bit(HCI_RUNNING, &hdev->flags))
return -ENETDOWN;
urb = alloc_diag_urb(hdev, enable);
if (IS_ERR(urb))
return PTR_ERR(urb);
return submit_or_queue_tx_urb(hdev, urb);
}
#ifdef CONFIG_PM
static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
{
struct btusb_data *data = priv;
pm_wakeup_event(&data->udev->dev, 0);
pm_system_wakeup();
/* Disable only if not already disabled (keep it balanced) */
if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
disable_irq_nosync(irq);
disable_irq_wake(irq);
}
return IRQ_HANDLED;
}
static const struct of_device_id btusb_match_table[] = {
{ .compatible = "usb1286,204e" },
{ .compatible = "usbcf3,e300" }, /* QCA6174A */
{ .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
{ }
};
MODULE_DEVICE_TABLE(of, btusb_match_table);
/* Use an oob wakeup pin? */
static int btusb_config_oob_wake(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
struct device *dev = &data->udev->dev;
int irq, ret;
clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
if (!of_match_device(btusb_match_table, dev))
return 0;
/* Move on if no IRQ specified */
irq = of_irq_get_byname(dev->of_node, "wakeup");
if (irq <= 0) {
bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
return 0;
}
irq_set_status_flags(irq, IRQ_NOAUTOEN);
ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
0, "OOB Wake-on-BT", data);
if (ret) {
bt_dev_err(hdev, "%s: IRQ request failed", __func__);
return ret;
}
ret = device_init_wakeup(dev, true);
if (ret) {
bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
return ret;
}
data->oob_wake_irq = irq;
bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
return 0;
}
#endif
static void btusb_check_needs_reset_resume(struct usb_interface *intf)
{
if (dmi_check_system(btusb_needs_reset_resume_table))
interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
}
static bool btusb_wakeup(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
return device_may_wakeup(&data->udev->dev);
}
static int btusb_shutdown_qca(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "HCI reset during shutdown failed");
return PTR_ERR(skb);
}
kfree_skb(skb);
return 0;
}
static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct btusb_data *data = file->private_data;
char buf[3];
buf[0] = data->poll_sync ? 'Y' : 'N';
buf[1] = '\n';
buf[2] = '\0';
return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
}
static ssize_t force_poll_sync_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct btusb_data *data = file->private_data;
bool enable;
int err;
err = kstrtobool_from_user(user_buf, count, &enable);
if (err)
return err;
/* Only allow changes while the adapter is down */
if (test_bit(HCI_UP, &data->hdev->flags))
return -EPERM;
if (data->poll_sync == enable)
return -EALREADY;
data->poll_sync = enable;
return count;
}
static const struct file_operations force_poll_sync_fops = {
.open = simple_open,
.read = force_poll_sync_read,
.write = force_poll_sync_write,
.llseek = default_llseek,
};
static int btusb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_endpoint_descriptor *ep_desc;
struct gpio_desc *reset_gpio;
struct btusb_data *data;
struct hci_dev *hdev;
unsigned ifnum_base;
int i, err, priv_size;
BT_DBG("intf %p id %p", intf, id);
/* interface numbers are hardcoded in the spec */
if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
if (!(id->driver_info & BTUSB_IFNUM_2))
return -ENODEV;
if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
return -ENODEV;
}
ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
if (!id->driver_info) {
const struct usb_device_id *match;
match = usb_match_id(intf, blacklist_table);
if (match)
id = match;
}
if (id->driver_info == BTUSB_IGNORE)
return -ENODEV;
if (id->driver_info & BTUSB_ATH3012) {
struct usb_device *udev = interface_to_usbdev(intf);
/* Old firmware would otherwise let ath3k driver load
* patch and sysconfig files
*/
if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
!btusb_qca_need_patch(udev))
return -ENODEV;
}
data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
ep_desc = &intf->cur_altsetting->endpoint[i].desc;
if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
data->intr_ep = ep_desc;
continue;
}
if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
data->bulk_tx_ep = ep_desc;
continue;
}
if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
data->bulk_rx_ep = ep_desc;
continue;
}
}
if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
return -ENODEV;
if (id->driver_info & BTUSB_AMP) {
data->cmdreq_type = USB_TYPE_CLASS | 0x01;
data->cmdreq = 0x2b;
} else {
data->cmdreq_type = USB_TYPE_CLASS;
data->cmdreq = 0x00;
}
data->udev = interface_to_usbdev(intf);
data->intf = intf;
INIT_WORK(&data->work, btusb_work);
INIT_WORK(&data->waker, btusb_waker);
INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
skb_queue_head_init(&data->acl_q);
init_usb_anchor(&data->deferred);
init_usb_anchor(&data->tx_anchor);
spin_lock_init(&data->txlock);
init_usb_anchor(&data->intr_anchor);
init_usb_anchor(&data->bulk_anchor);
init_usb_anchor(&data->isoc_anchor);
init_usb_anchor(&data->diag_anchor);
init_usb_anchor(&data->ctrl_anchor);
spin_lock_init(&data->rxlock);
priv_size = 0;
data->recv_event = hci_recv_frame;
data->recv_bulk = btusb_recv_bulk;
if (id->driver_info & BTUSB_INTEL_COMBINED) {
/* Allocate extra space for Intel device */
priv_size += sizeof(struct btintel_data);
/* Override the rx handlers */
data->recv_event = btusb_recv_event_intel;
data->recv_bulk = btusb_recv_bulk_intel;
}
data->recv_acl = hci_recv_frame;
hdev = hci_alloc_dev_priv(priv_size);
if (!hdev)
return -ENOMEM;
hdev->bus = HCI_USB;
hci_set_drvdata(hdev, data);
if (id->driver_info & BTUSB_AMP)
hdev->dev_type = HCI_AMP;
else
hdev->dev_type = HCI_PRIMARY;
data->hdev = hdev;
SET_HCIDEV_DEV(hdev, &intf->dev);
reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(reset_gpio)) {
err = PTR_ERR(reset_gpio);
goto out_free_dev;
} else if (reset_gpio) {
data->reset_gpio = reset_gpio;
}
hdev->open = btusb_open;
hdev->close = btusb_close;
hdev->flush = btusb_flush;
hdev->send = btusb_send_frame;
hdev->notify = btusb_notify;
hdev->wakeup = btusb_wakeup;
#ifdef CONFIG_PM
err = btusb_config_oob_wake(hdev);
if (err)
goto out_free_dev;
/* Marvell devices may need a specific chip configuration */
if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
err = marvell_config_oob_wake(hdev);
if (err)
goto out_free_dev;
}
#endif
if (id->driver_info & BTUSB_CW6622)
set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
if (id->driver_info & BTUSB_BCM2045)
set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
if (id->driver_info & BTUSB_BCM92035)
hdev->setup = btusb_setup_bcm92035;
if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
(id->driver_info & BTUSB_BCM_PATCHRAM)) {
hdev->manufacturer = 15;
hdev->setup = btbcm_setup_patchram;
hdev->set_diag = btusb_bcm_set_diag;
hdev->set_bdaddr = btbcm_set_bdaddr;
/* Broadcom LM_DIAG Interface numbers are hardcoded */
data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
}
if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
(id->driver_info & BTUSB_BCM_APPLE)) {
hdev->manufacturer = 15;
hdev->setup = btbcm_setup_apple;
hdev->set_diag = btusb_bcm_set_diag;
/* Broadcom LM_DIAG Interface numbers are hardcoded */
data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
}
/* Combined Intel Device setup to support multiple setup routine */
if (id->driver_info & BTUSB_INTEL_COMBINED) {
err = btintel_configure_setup(hdev);
if (err)
goto out_free_dev;
/* Transport specific configuration */
hdev->send = btusb_send_frame_intel;
hdev->cmd_timeout = btusb_intel_cmd_timeout;
if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
}
if (id->driver_info & BTUSB_MARVELL)
hdev->set_bdaddr = btusb_set_bdaddr_marvell;
if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
(id->driver_info & BTUSB_MEDIATEK)) {
hdev->setup = btusb_mtk_setup;
hdev->shutdown = btusb_mtk_shutdown;
hdev->manufacturer = 70;
hdev->cmd_timeout = btusb_mtk_cmd_timeout;
hdev->set_bdaddr = btmtk_set_bdaddr;
set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
data->recv_acl = btusb_recv_acl_mtk;
}
if (id->driver_info & BTUSB_SWAVE) {
set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
}
if (id->driver_info & BTUSB_INTEL_BOOT) {
hdev->manufacturer = 2;
set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
}
if (id->driver_info & BTUSB_ATH3012) {
data->setup_on_usb = btusb_setup_qca;
hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
}
if (id->driver_info & BTUSB_QCA_ROME) {
data->setup_on_usb = btusb_setup_qca;
hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
hdev->cmd_timeout = btusb_qca_cmd_timeout;
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
btusb_check_needs_reset_resume(intf);
}
if (id->driver_info & BTUSB_QCA_WCN6855) {
data->setup_on_usb = btusb_setup_qca;
hdev->shutdown = btusb_shutdown_qca;
hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
hdev->cmd_timeout = btusb_qca_cmd_timeout;
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
hci_set_msft_opcode(hdev, 0xFD70);
}
if (id->driver_info & BTUSB_AMP) {
/* AMP controllers do not support SCO packets */
data->isoc = NULL;
} else {
/* Interface orders are hardcoded in the specification */
data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
data->isoc_ifnum = ifnum_base + 1;
}
if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
(id->driver_info & BTUSB_REALTEK)) {
hdev->setup = btrtl_setup_realtek;
hdev->shutdown = btrtl_shutdown_realtek;
hdev->cmd_timeout = btusb_rtl_cmd_timeout;
/* Realtek devices need to set remote wakeup on auto-suspend */
set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
}
if (!reset)
set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
if (!disable_scofix)
set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
}
if (id->driver_info & BTUSB_BROKEN_ISOC)
data->isoc = NULL;
if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
if (id->driver_info & BTUSB_VALID_LE_STATES)
set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
if (id->driver_info & BTUSB_DIGIANSWER) {
data->cmdreq_type = USB_TYPE_VENDOR;
set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
}
if (id->driver_info & BTUSB_CSR) {
struct usb_device *udev = data->udev;
u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
/* Old firmware would otherwise execute USB reset */
if (bcdDevice < 0x117)
set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
/* This must be set first in case we disable it for fakes */
set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
/* Fake CSR devices with broken commands */
if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 &&
le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
hdev->setup = btusb_setup_csr;
}
if (id->driver_info & BTUSB_SNIFFER) {
struct usb_device *udev = data->udev;
/* New sniffer firmware has crippled HCI interface */
if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
}
if (id->driver_info & BTUSB_INTEL_BOOT) {
/* A bug in the bootloader causes that interrupt interface is
* only enabled after receiving SetInterface(0, AltSetting=0).
*/
err = usb_set_interface(data->udev, 0, 0);
if (err < 0) {
BT_ERR("failed to set interface 0, alt 0 %d", err);
goto out_free_dev;
}
}
if (data->isoc) {
err = usb_driver_claim_interface(&btusb_driver,
data->isoc, data);
if (err < 0)
goto out_free_dev;
}
if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
if (!usb_driver_claim_interface(&btusb_driver,
data->diag, data))
__set_diag_interface(hdev);
else
data->diag = NULL;
}
if (enable_autosuspend)
usb_enable_autosuspend(data->udev);
err = hci_register_dev(hdev);
if (err < 0)
goto out_free_dev;
usb_set_intfdata(intf, data);
debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
&force_poll_sync_fops);
return 0;
out_free_dev:
if (data->reset_gpio)
gpiod_put(data->reset_gpio);
hci_free_dev(hdev);
return err;
}
static void btusb_disconnect(struct usb_interface *intf)
{
struct btusb_data *data = usb_get_intfdata(intf);
struct hci_dev *hdev;
BT_DBG("intf %p", intf);
if (!data)
return;
hdev = data->hdev;
usb_set_intfdata(data->intf, NULL);
if (data->isoc)
usb_set_intfdata(data->isoc, NULL);
if (data->diag)
usb_set_intfdata(data->diag, NULL);
hci_unregister_dev(hdev);
if (intf == data->intf) {
if (data->isoc)
usb_driver_release_interface(&btusb_driver, data->isoc);
if (data->diag)
usb_driver_release_interface(&btusb_driver, data->diag);
} else if (intf == data->isoc) {
if (data->diag)
usb_driver_release_interface(&btusb_driver, data->diag);
usb_driver_release_interface(&btusb_driver, data->intf);
} else if (intf == data->diag) {
usb_driver_release_interface(&btusb_driver, data->intf);
if (data->isoc)
usb_driver_release_interface(&btusb_driver, data->isoc);
}
if (data->oob_wake_irq)
device_init_wakeup(&data->udev->dev, false);
if (data->reset_gpio)
gpiod_put(data->reset_gpio);
hci_free_dev(hdev);
}
#ifdef CONFIG_PM
static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
{
struct btusb_data *data = usb_get_intfdata(intf);
BT_DBG("intf %p", intf);
if (data->suspend_count++)
return 0;
spin_lock_irq(&data->txlock);
if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
set_bit(BTUSB_SUSPENDING, &data->flags);
spin_unlock_irq(&data->txlock);
} else {
spin_unlock_irq(&data->txlock);
data->suspend_count--;
return -EBUSY;
}
cancel_work_sync(&data->work);
btusb_stop_traffic(data);
usb_kill_anchored_urbs(&data->tx_anchor);
if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
enable_irq_wake(data->oob_wake_irq);
enable_irq(data->oob_wake_irq);
}
/* For global suspend, Realtek devices lose the loaded fw
* in them. But for autosuspend, firmware should remain.
* Actually, it depends on whether the usb host sends
* set feature (enable wakeup) or not.
*/
if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
if (PMSG_IS_AUTO(message) &&
device_can_wakeup(&data->udev->dev))
data->udev->do_remote_wakeup = 1;
else if (!PMSG_IS_AUTO(message) &&
!device_may_wakeup(&data->udev->dev)) {
data->udev->do_remote_wakeup = 0;
data->udev->reset_resume = 1;
}
}
return 0;
}
static void play_deferred(struct btusb_data *data)
{
struct urb *urb;
int err;
while ((urb = usb_get_from_anchor(&data->deferred))) {
usb_anchor_urb(urb, &data->tx_anchor);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err < 0) {
if (err != -EPERM && err != -ENODEV)
BT_ERR("%s urb %p submission failed (%d)",
data->hdev->name, urb, -err);
kfree(urb->setup_packet);
usb_unanchor_urb(urb);
usb_free_urb(urb);
break;
}
data->tx_in_flight++;
usb_free_urb(urb);
}
/* Cleanup the rest deferred urbs. */
while ((urb = usb_get_from_anchor(&data->deferred))) {
kfree(urb->setup_packet);
usb_free_urb(urb);
}
}
static int btusb_resume(struct usb_interface *intf)
{
struct btusb_data *data = usb_get_intfdata(intf);
struct hci_dev *hdev = data->hdev;
int err = 0;
BT_DBG("intf %p", intf);
if (--data->suspend_count)
return 0;
/* Disable only if not already disabled (keep it balanced) */
if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
disable_irq(data->oob_wake_irq);
disable_irq_wake(data->oob_wake_irq);
}
if (!test_bit(HCI_RUNNING, &hdev->flags))
goto done;
if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
err = btusb_submit_intr_urb(hdev, GFP_NOIO);
if (err < 0) {
clear_bit(BTUSB_INTR_RUNNING, &data->flags);
goto failed;
}
}
if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
if (err < 0) {
clear_bit(BTUSB_BULK_RUNNING, &data->flags);
goto failed;
}
btusb_submit_bulk_urb(hdev, GFP_NOIO);
}
if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
else
btusb_submit_isoc_urb(hdev, GFP_NOIO);
}
spin_lock_irq(&data->txlock);
play_deferred(data);
clear_bit(BTUSB_SUSPENDING, &data->flags);
spin_unlock_irq(&data->txlock);
schedule_work(&data->work);
return 0;
failed:
usb_scuttle_anchored_urbs(&data->deferred);
done:
spin_lock_irq(&data->txlock);
clear_bit(BTUSB_SUSPENDING, &data->flags);
spin_unlock_irq(&data->txlock);
return err;
}
#endif
static struct usb_driver btusb_driver = {
.name = "btusb",
.probe = btusb_probe,
.disconnect = btusb_disconnect,
#ifdef CONFIG_PM
.suspend = btusb_suspend,
.resume = btusb_resume,
#endif
.id_table = btusb_table,
.supports_autosuspend = 1,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(btusb_driver);
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(enable_autosuspend, bool, 0644);
MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
module_param(reset, bool, 0644);
MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
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