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android-kvm / linux / aec53e60e0e665b359328b946654bc3ef77aed57 / . / drivers / bluetooth / btusb.c
blob: 74ec7ca96b692517bd48801769a5eb145585fb8a [file] [log] [blame]
// 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 0x01
#define BTUSB_DIGIANSWER 0x02
#define BTUSB_CSR 0x04
#define BTUSB_SNIFFER 0x08
#define BTUSB_BCM92035 0x10
#define BTUSB_BROKEN_ISOC 0x20
#define BTUSB_WRONG_SCO_MTU 0x40
#define BTUSB_ATH3012 0x80
#define BTUSB_INTEL_COMBINED 0x100
#define BTUSB_INTEL_BOOT 0x200
#define BTUSB_BCM_PATCHRAM 0x400
#define BTUSB_MARVELL 0x800
#define BTUSB_SWAVE 0x1000
#define BTUSB_AMP 0x4000
#define BTUSB_QCA_ROME 0x8000
#define BTUSB_BCM_APPLE 0x10000
#define BTUSB_REALTEK 0x20000
#define BTUSB_BCM2045 0x40000
#define BTUSB_IFNUM_2 0x80000
#define BTUSB_CW6622 0x100000
#define BTUSB_MEDIATEK 0x200000
#define BTUSB_WIDEBAND_SPEECH 0x400000
#define BTUSB_VALID_LE_STATES 0x800000
#define BTUSB_QCA_WCN6855 0x1000000
#define BTUSB_INTEL_BROKEN_INITIAL_NCMD 0x4000000
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 },
/* 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, 0x07da), .driver_info = BTUSB_CSR },
{ USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
BTUSB_INTEL_BROKEN_INITIAL_NCMD },
{ USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
{ USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED },
{ 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, 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 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(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(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 },
/* 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);
/* 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: 0x1012 sub: 0x0810)
* - 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_err(hdev, "CSR: Failed to 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 hci_event_hdr *hdr;
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);
hdr = (void *)skb->data;
/* Fix up the vendor event id with 0xff for vendor specific
* instead of 0xe4 so that event send via monitoring socket can
* be parsed properly.
*/
hdr->evt = 0xff;
/* 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 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;
}
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_BROKEN_INITIAL_NCMD)
btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
}
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");