CoCalc -- btusb.c

GitHub Repository: torvalds/linux
Path: blob/master/drivers/bluetooth/btusb.c
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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 *
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 *  Generic Bluetooth USB driver
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 *
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 *  Copyright (C) 2005-2008  Marcel Holtmann <[email protected]>
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 */
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#include <linux/dmi.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/usb/quirks.h>
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#include <linux/firmware.h>
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#include <linux/iopoll.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#include <linux/suspend.h>
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#include <linux/gpio/consumer.h>
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#include <linux/debugfs.h>
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#include <linux/unaligned.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include <net/bluetooth/hci_drv.h>
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#include "btintel.h"
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#include "btbcm.h"
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#include "btrtl.h"
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#include "btmtk.h"
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#define VERSION "0.8"
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static bool disable_scofix;
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static bool force_scofix;
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static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
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static bool enable_poll_sync = IS_ENABLED(CONFIG_BT_HCIBTUSB_POLL_SYNC);
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static bool reset = true;
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static struct usb_driver btusb_driver;
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#define BTUSB_IGNORE			BIT(0)
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#define BTUSB_DIGIANSWER		BIT(1)
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#define BTUSB_CSR			BIT(2)
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#define BTUSB_SNIFFER			BIT(3)
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#define BTUSB_BCM92035			BIT(4)
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#define BTUSB_BROKEN_ISOC		BIT(5)
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#define BTUSB_WRONG_SCO_MTU		BIT(6)
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#define BTUSB_ATH3012			BIT(7)
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#define BTUSB_INTEL_COMBINED		BIT(8)
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#define BTUSB_INTEL_BOOT		BIT(9)
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#define BTUSB_BCM_PATCHRAM		BIT(10)
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#define BTUSB_MARVELL			BIT(11)
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#define BTUSB_SWAVE			BIT(12)
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#define BTUSB_AMP			BIT(13)
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#define BTUSB_QCA_ROME			BIT(14)
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#define BTUSB_BCM_APPLE			BIT(15)
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#define BTUSB_REALTEK			BIT(16)
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#define BTUSB_BCM2045			BIT(17)
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#define BTUSB_IFNUM_2			BIT(18)
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#define BTUSB_CW6622			BIT(19)
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#define BTUSB_MEDIATEK			BIT(20)
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#define BTUSB_WIDEBAND_SPEECH		BIT(21)
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#define BTUSB_INVALID_LE_STATES		BIT(22)
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#define BTUSB_QCA_WCN6855		BIT(23)
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#define BTUSB_INTEL_BROKEN_SHUTDOWN_LED	BIT(24)
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#define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
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#define BTUSB_INTEL_NO_WBS_SUPPORT	BIT(26)
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#define BTUSB_ACTIONS_SEMI		BIT(27)
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#define BTUSB_BARROT			BIT(28)
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static const struct usb_device_id btusb_table[] = {
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	/* Generic Bluetooth USB device */
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	{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
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	/* Generic Bluetooth AMP device */
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	{ USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
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	/* Generic Bluetooth USB interface */
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	{ USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
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	/* Apple-specific (Broadcom) devices */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
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	/* MediaTek MT76x0E */
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	{ USB_DEVICE(0x0e8d, 0x763f) },
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	/* Broadcom SoftSailing reporting vendor specific */
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	{ USB_DEVICE(0x0a5c, 0x21e1) },
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	/* Apple MacBookPro 7,1 */
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	{ USB_DEVICE(0x05ac, 0x8213) },
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	/* Apple iMac11,1 */
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	{ USB_DEVICE(0x05ac, 0x8215) },
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	/* Apple MacBookPro6,2 */
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	{ USB_DEVICE(0x05ac, 0x8218) },
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	/* Apple MacBookAir3,1, MacBookAir3,2 */
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	{ USB_DEVICE(0x05ac, 0x821b) },
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	/* Apple MacBookAir4,1 */
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	{ USB_DEVICE(0x05ac, 0x821f) },
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	/* Apple MacBookPro8,2 */
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	{ USB_DEVICE(0x05ac, 0x821a) },
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	/* Apple MacMini5,1 */
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	{ USB_DEVICE(0x05ac, 0x8281) },
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	/* AVM BlueFRITZ! USB v2.0 */
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	{ USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
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	/* Bluetooth Ultraport Module from IBM */
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	{ USB_DEVICE(0x04bf, 0x030a) },
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	/* ALPS Modules with non-standard id */
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	{ USB_DEVICE(0x044e, 0x3001) },
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	{ USB_DEVICE(0x044e, 0x3002) },
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	/* Ericsson with non-standard id */
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	{ USB_DEVICE(0x0bdb, 0x1002) },
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	/* Canyon CN-BTU1 with HID interfaces */
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	{ USB_DEVICE(0x0c10, 0x0000) },
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	/* Broadcom BCM20702B0 (Dynex/Insignia) */
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	{ USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Broadcom BCM43142A0 (Foxconn/Lenovo) */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Broadcom BCM920703 (HTC Vive) */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Foxconn - Hon Hai */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Lite-On Technology - Broadcom based */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Broadcom devices with vendor specific id */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* ASUSTek Computer - Broadcom based */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Belkin F8065bf - Broadcom based */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* IMC Networks - Broadcom based */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Dell Computer - Broadcom based  */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Toshiba Corp - Broadcom based */
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	{ USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
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	  .driver_info = BTUSB_BCM_PATCHRAM },
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	/* Intel Bluetooth USB Bootloader (RAM module) */
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	{ USB_DEVICE(0x8087, 0x0a5a),
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	  .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
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	{ }	/* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, btusb_table);
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static const struct usb_device_id quirks_table[] = {
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	/* CSR BlueCore devices */
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	{ USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
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	/* Broadcom BCM2033 without firmware */
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	{ USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
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	/* Broadcom BCM2045 devices */
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	{ USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
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	/* Atheros 3011 with sflash firmware */
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	{ USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
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	{ USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
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	{ USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
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	{ USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
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	{ USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
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	{ USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
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	{ USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
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	/* Atheros AR9285 Malbec with sflash firmware */
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	{ USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
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	/* Atheros 3012 with sflash firmware */
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	{ USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
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	/* Atheros AR5BBU12 with sflash firmware */
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	{ USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
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	/* Atheros AR5BBU12 with sflash firmware */
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	{ USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
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	{ USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
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	/* QCA ROME chipset */
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	{ USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
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						     BTUSB_WIDEBAND_SPEECH },
300

301
	/* QCA WCN6855 chipset */
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	{ USB_DEVICE(0x0489, 0xe0c7), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0c9), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0ca), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0cb), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0ce), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0de), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
320
	{ USB_DEVICE(0x0489, 0xe0df), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0e1), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0ea), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x0489, 0xe0ec), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
330
	{ USB_DEVICE(0x04ca, 0x3022), .driver_info = BTUSB_QCA_WCN6855 |
331
						     BTUSB_WIDEBAND_SPEECH },
332
	{ USB_DEVICE(0x04ca, 0x3023), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x3024), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
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	{ USB_DEVICE(0x04ca, 0x3a22), .driver_info = BTUSB_QCA_WCN6855 |
337
						     BTUSB_WIDEBAND_SPEECH },
338
	{ USB_DEVICE(0x04ca, 0x3a24), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
340
	{ USB_DEVICE(0x04ca, 0x3a26), .driver_info = BTUSB_QCA_WCN6855 |
341
						     BTUSB_WIDEBAND_SPEECH },
342
	{ USB_DEVICE(0x04ca, 0x3a27), .driver_info = BTUSB_QCA_WCN6855 |
343
						     BTUSB_WIDEBAND_SPEECH },
344
	{ USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
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						     BTUSB_WIDEBAND_SPEECH },
346
	{ USB_DEVICE(0x10ab, 0x9108), .driver_info = BTUSB_QCA_WCN6855 |
347
						     BTUSB_WIDEBAND_SPEECH },
348
	{ USB_DEVICE(0x10ab, 0x9109), .driver_info = BTUSB_QCA_WCN6855 |
349
						     BTUSB_WIDEBAND_SPEECH },
350
	{ USB_DEVICE(0x10ab, 0x9208), .driver_info = BTUSB_QCA_WCN6855 |
351
						     BTUSB_WIDEBAND_SPEECH },
352
	{ USB_DEVICE(0x10ab, 0x9209), .driver_info = BTUSB_QCA_WCN6855 |
353
						     BTUSB_WIDEBAND_SPEECH },
354
	{ USB_DEVICE(0x10ab, 0x9308), .driver_info = BTUSB_QCA_WCN6855 |
355
						     BTUSB_WIDEBAND_SPEECH },
356
	{ USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
357
						     BTUSB_WIDEBAND_SPEECH },
358
	{ USB_DEVICE(0x10ab, 0x9408), .driver_info = BTUSB_QCA_WCN6855 |
359
						     BTUSB_WIDEBAND_SPEECH },
360
	{ USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
361
						     BTUSB_WIDEBAND_SPEECH },
362
	{ USB_DEVICE(0x10ab, 0x9508), .driver_info = BTUSB_QCA_WCN6855 |
363
						     BTUSB_WIDEBAND_SPEECH },
364
	{ USB_DEVICE(0x10ab, 0x9509), .driver_info = BTUSB_QCA_WCN6855 |
365
						     BTUSB_WIDEBAND_SPEECH },
366
	{ USB_DEVICE(0x10ab, 0x9608), .driver_info = BTUSB_QCA_WCN6855 |
367
						     BTUSB_WIDEBAND_SPEECH },
368
	{ USB_DEVICE(0x10ab, 0x9609), .driver_info = BTUSB_QCA_WCN6855 |
369
						     BTUSB_WIDEBAND_SPEECH },
370
	{ USB_DEVICE(0x10ab, 0x9f09), .driver_info = BTUSB_QCA_WCN6855 |
371
						     BTUSB_WIDEBAND_SPEECH },
372
	{ USB_DEVICE(0x28de, 0x1401), .driver_info = BTUSB_QCA_WCN6855 |
373
						     BTUSB_WIDEBAND_SPEECH },
374

375
	/* QCA WCN785x chipset */
376
	{ USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 |
377
						     BTUSB_WIDEBAND_SPEECH },
378
	{ USB_DEVICE(0x0489, 0xe0fc), .driver_info = BTUSB_QCA_WCN6855 |
379
						     BTUSB_WIDEBAND_SPEECH },
380
	{ USB_DEVICE(0x0489, 0xe0f3), .driver_info = BTUSB_QCA_WCN6855 |
381
						     BTUSB_WIDEBAND_SPEECH },
382
	{ USB_DEVICE(0x0489, 0xe100), .driver_info = BTUSB_QCA_WCN6855 |
383
						     BTUSB_WIDEBAND_SPEECH },
384
	{ USB_DEVICE(0x0489, 0xe103), .driver_info = BTUSB_QCA_WCN6855 |
385
						     BTUSB_WIDEBAND_SPEECH },
386
	{ USB_DEVICE(0x0489, 0xe10a), .driver_info = BTUSB_QCA_WCN6855 |
387
						     BTUSB_WIDEBAND_SPEECH },
388
	{ USB_DEVICE(0x0489, 0xe10d), .driver_info = BTUSB_QCA_WCN6855 |
389
						     BTUSB_WIDEBAND_SPEECH },
390
	{ USB_DEVICE(0x0489, 0xe11b), .driver_info = BTUSB_QCA_WCN6855 |
391
						     BTUSB_WIDEBAND_SPEECH },
392
	{ USB_DEVICE(0x0489, 0xe11c), .driver_info = BTUSB_QCA_WCN6855 |
393
						     BTUSB_WIDEBAND_SPEECH },
394
	{ USB_DEVICE(0x0489, 0xe11f), .driver_info = BTUSB_QCA_WCN6855 |
395
						     BTUSB_WIDEBAND_SPEECH },
396
	{ USB_DEVICE(0x0489, 0xe141), .driver_info = BTUSB_QCA_WCN6855 |
397
						     BTUSB_WIDEBAND_SPEECH },
398
	{ USB_DEVICE(0x0489, 0xe14a), .driver_info = BTUSB_QCA_WCN6855 |
399
						     BTUSB_WIDEBAND_SPEECH },
400
	{ USB_DEVICE(0x0489, 0xe14b), .driver_info = BTUSB_QCA_WCN6855 |
401
						     BTUSB_WIDEBAND_SPEECH },
402
	{ USB_DEVICE(0x0489, 0xe14d), .driver_info = BTUSB_QCA_WCN6855 |
403
						     BTUSB_WIDEBAND_SPEECH },
404
	{ USB_DEVICE(0x13d3, 0x3623), .driver_info = BTUSB_QCA_WCN6855 |
405
						     BTUSB_WIDEBAND_SPEECH },
406
	{ USB_DEVICE(0x13d3, 0x3624), .driver_info = BTUSB_QCA_WCN6855 |
407
						     BTUSB_WIDEBAND_SPEECH },
408
	{ USB_DEVICE(0x2c7c, 0x0130), .driver_info = BTUSB_QCA_WCN6855 |
409
						     BTUSB_WIDEBAND_SPEECH },
410
	{ USB_DEVICE(0x2c7c, 0x0131), .driver_info = BTUSB_QCA_WCN6855 |
411
						     BTUSB_WIDEBAND_SPEECH },
412
	{ USB_DEVICE(0x2c7c, 0x0132), .driver_info = BTUSB_QCA_WCN6855 |
413
						     BTUSB_WIDEBAND_SPEECH },
414

415
	/* Broadcom BCM2035 */
416
	{ USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
417
	{ USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
418
	{ USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
419

420
	/* Broadcom BCM2045 */
421
	{ USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
422
	{ USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
423

424
	/* IBM/Lenovo ThinkPad with Broadcom chip */
425
	{ USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
426
	{ USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
427

428
	/* HP laptop with Broadcom chip */
429
	{ USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
430

431
	/* Dell laptop with Broadcom chip */
432
	{ USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
433

434
	/* Dell Wireless 370 and 410 devices */
435
	{ USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
436
	{ USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
437

438
	/* Belkin F8T012 and F8T013 devices */
439
	{ USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
440
	{ USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
441

442
	/* Asus WL-BTD202 device */
443
	{ USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
444

445
	/* Kensington Bluetooth USB adapter */
446
	{ USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
447

448
	/* RTX Telecom based adapters with buggy SCO support */
449
	{ USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
450
	{ USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
451

452
	/* CONWISE Technology based adapters with buggy SCO support */
453
	{ USB_DEVICE(0x0e5e, 0x6622),
454
	  .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
455

456
	/* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
457
	{ USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
458

459
	/* Digianswer devices */
460
	{ USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
461
	{ USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
462

463
	/* CSR BlueCore Bluetooth Sniffer */
464
	{ USB_DEVICE(0x0a12, 0x0002),
465
	  .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
466

467
	/* Frontline ComProbe Bluetooth Sniffer */
468
	{ USB_DEVICE(0x16d3, 0x0002),
469
	  .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
470

471
	/* Marvell Bluetooth devices */
472
	{ USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
473
	{ USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
474
	{ USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
475

476
	/* Intel Bluetooth devices */
477
	{ USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
478
	{ USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
479
	{ USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
480
	{ USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
481
	{ USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
482
	{ USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
483
	{ USB_DEVICE(0x8087, 0x0036), .driver_info = BTUSB_INTEL_COMBINED },
484
	{ USB_DEVICE(0x8087, 0x0037), .driver_info = BTUSB_INTEL_COMBINED },
485
	{ USB_DEVICE(0x8087, 0x0038), .driver_info = BTUSB_INTEL_COMBINED },
486
	{ USB_DEVICE(0x8087, 0x0039), .driver_info = BTUSB_INTEL_COMBINED },
487
	{ USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
488
	{ USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
489
						     BTUSB_INTEL_NO_WBS_SUPPORT |
490
						     BTUSB_INTEL_BROKEN_INITIAL_NCMD |
491
						     BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
492
	{ USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
493
						     BTUSB_INTEL_NO_WBS_SUPPORT |
494
						     BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
495
	{ USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
496
	{ USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
497
						     BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
498
	{ USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
499

500
	/* Other Intel Bluetooth devices */
501
	{ USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
502
	  .driver_info = BTUSB_IGNORE },
503

504
	/* Realtek 8821CE Bluetooth devices */
505
	{ USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
506
						     BTUSB_WIDEBAND_SPEECH },
507

508
	/* Realtek 8822CE Bluetooth devices */
509
	{ USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
510
						     BTUSB_WIDEBAND_SPEECH },
511
	{ USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
512
						     BTUSB_WIDEBAND_SPEECH },
513

514
	/* Realtek 8822CU Bluetooth devices */
515
	{ USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
516
						     BTUSB_WIDEBAND_SPEECH },
517

518
	/* Realtek 8851BE Bluetooth devices */
519
	{ USB_DEVICE(0x0bda, 0xb850), .driver_info = BTUSB_REALTEK },
520
	{ USB_DEVICE(0x13d3, 0x3600), .driver_info = BTUSB_REALTEK },
521
	{ USB_DEVICE(0x13d3, 0x3601), .driver_info = BTUSB_REALTEK },
522

523
	/* Realtek 8851BU Bluetooth devices */
524
	{ USB_DEVICE(0x3625, 0x010b), .driver_info = BTUSB_REALTEK |
525
						     BTUSB_WIDEBAND_SPEECH },
526
	{ USB_DEVICE(0x2001, 0x332a), .driver_info = BTUSB_REALTEK |
527
						     BTUSB_WIDEBAND_SPEECH },
528

529
	/* Realtek 8852AE Bluetooth devices */
530
	{ USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
531
						     BTUSB_WIDEBAND_SPEECH },
532
	{ USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
533
						     BTUSB_WIDEBAND_SPEECH },
534
	{ USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
535
						     BTUSB_WIDEBAND_SPEECH },
536
	{ USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
537
						     BTUSB_WIDEBAND_SPEECH },
538
	{ USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
539
						     BTUSB_WIDEBAND_SPEECH },
540
	{ USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
541
						     BTUSB_WIDEBAND_SPEECH },
542
	{ USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK |
543
						     BTUSB_WIDEBAND_SPEECH },
544

545
	/* Realtek 8852CE Bluetooth devices */
546
	{ USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
547
						     BTUSB_WIDEBAND_SPEECH },
548
	{ USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
549
						     BTUSB_WIDEBAND_SPEECH },
550
	{ USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
551
						     BTUSB_WIDEBAND_SPEECH },
552
	{ USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
553
						     BTUSB_WIDEBAND_SPEECH },
554
	{ USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
555
						     BTUSB_WIDEBAND_SPEECH },
556
	{ USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK |
557
						     BTUSB_WIDEBAND_SPEECH },
558
	{ USB_DEVICE(0x0489, 0xe122), .driver_info = BTUSB_REALTEK |
559
						     BTUSB_WIDEBAND_SPEECH },
560

561
	/* Realtek 8852BE Bluetooth devices */
562
	{ USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
563
						     BTUSB_WIDEBAND_SPEECH },
564
	{ USB_DEVICE(0x0bda, 0x4853), .driver_info = BTUSB_REALTEK |
565
						     BTUSB_WIDEBAND_SPEECH },
566
	{ USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
567
						     BTUSB_WIDEBAND_SPEECH },
568
	{ USB_DEVICE(0x0bda, 0xb85b), .driver_info = BTUSB_REALTEK |
569
						     BTUSB_WIDEBAND_SPEECH },
570
	{ USB_DEVICE(0x13d3, 0x3570), .driver_info = BTUSB_REALTEK |
571
						     BTUSB_WIDEBAND_SPEECH },
572
	{ USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
573
						     BTUSB_WIDEBAND_SPEECH },
574
	{ USB_DEVICE(0x13d3, 0x3572), .driver_info = BTUSB_REALTEK |
575
						     BTUSB_WIDEBAND_SPEECH },
576
	{ USB_DEVICE(0x13d3, 0x3591), .driver_info = BTUSB_REALTEK |
577
						     BTUSB_WIDEBAND_SPEECH },
578
	{ USB_DEVICE(0x13d3, 0x3618), .driver_info = BTUSB_REALTEK |
579
						     BTUSB_WIDEBAND_SPEECH },
580
	{ USB_DEVICE(0x0489, 0xe123), .driver_info = BTUSB_REALTEK |
581
						     BTUSB_WIDEBAND_SPEECH },
582
	{ USB_DEVICE(0x0489, 0xe125), .driver_info = BTUSB_REALTEK |
583
						     BTUSB_WIDEBAND_SPEECH },
584

585
	/* Realtek 8852BT/8852BE-VT Bluetooth devices */
586
	{ USB_DEVICE(0x0bda, 0x8520), .driver_info = BTUSB_REALTEK |
587
						     BTUSB_WIDEBAND_SPEECH },
588

589
	/* Realtek 8922AE Bluetooth devices */
590
	{ USB_DEVICE(0x0bda, 0x8922), .driver_info = BTUSB_REALTEK |
591
						     BTUSB_WIDEBAND_SPEECH },
592
	{ USB_DEVICE(0x13d3, 0x3617), .driver_info = BTUSB_REALTEK |
593
						     BTUSB_WIDEBAND_SPEECH },
594
	{ USB_DEVICE(0x13d3, 0x3616), .driver_info = BTUSB_REALTEK |
595
						     BTUSB_WIDEBAND_SPEECH },
596
	{ USB_DEVICE(0x0489, 0xe130), .driver_info = BTUSB_REALTEK |
597
						     BTUSB_WIDEBAND_SPEECH },
598

599
	/* Realtek Bluetooth devices */
600
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
601
	  .driver_info = BTUSB_REALTEK },
602

603
	/* MediaTek Bluetooth devices */
604
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
605
	  .driver_info = BTUSB_MEDIATEK |
606
			 BTUSB_WIDEBAND_SPEECH },
607

608
	/* Additional MediaTek MT7615E Bluetooth devices */
609
	{ USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
610

611
	/* Additional MediaTek MT7663 Bluetooth devices */
612
	{ USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
613
						     BTUSB_WIDEBAND_SPEECH },
614
	{ USB_DEVICE(0x04ca, 0x3801), .driver_info = BTUSB_MEDIATEK |
615
						     BTUSB_WIDEBAND_SPEECH },
616

617
	/* Additional MediaTek MT7668 Bluetooth devices */
618
	{ USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
619
						     BTUSB_WIDEBAND_SPEECH },
620

621
	/* Additional MediaTek MT7920 Bluetooth devices */
622
	{ USB_DEVICE(0x0489, 0xe134), .driver_info = BTUSB_MEDIATEK |
623
						     BTUSB_WIDEBAND_SPEECH },
624
	{ USB_DEVICE(0x13d3, 0x3620), .driver_info = BTUSB_MEDIATEK |
625
						     BTUSB_WIDEBAND_SPEECH },
626
	{ USB_DEVICE(0x13d3, 0x3621), .driver_info = BTUSB_MEDIATEK |
627
						     BTUSB_WIDEBAND_SPEECH },
628
	{ USB_DEVICE(0x13d3, 0x3622), .driver_info = BTUSB_MEDIATEK |
629
						     BTUSB_WIDEBAND_SPEECH },
630

631
	/* Additional MediaTek MT7921 Bluetooth devices */
632
	{ USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
633
						     BTUSB_WIDEBAND_SPEECH },
634
	{ USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
635
						     BTUSB_WIDEBAND_SPEECH },
636
	{ USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK |
637
						     BTUSB_WIDEBAND_SPEECH },
638
	{ USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
639
						     BTUSB_WIDEBAND_SPEECH },
640
	{ USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
641
						     BTUSB_WIDEBAND_SPEECH },
642
	{ USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK |
643
						     BTUSB_WIDEBAND_SPEECH },
644
	{ USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
645
						     BTUSB_WIDEBAND_SPEECH },
646
	{ USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
647
						     BTUSB_WIDEBAND_SPEECH },
648
	{ USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
649
						     BTUSB_WIDEBAND_SPEECH },
650
	{ USB_DEVICE(0x13d3, 0x3576), .driver_info = BTUSB_MEDIATEK |
651
						     BTUSB_WIDEBAND_SPEECH },
652
	{ USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK |
653
						     BTUSB_WIDEBAND_SPEECH },
654
	{ USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK |
655
						     BTUSB_WIDEBAND_SPEECH },
656
	{ USB_DEVICE(0x13d3, 0x3606), .driver_info = BTUSB_MEDIATEK |
657
						     BTUSB_WIDEBAND_SPEECH },
658

659
	/* MediaTek MT7922 Bluetooth devices */
660
	{ USB_DEVICE(0x13d3, 0x3585), .driver_info = BTUSB_MEDIATEK |
661
						     BTUSB_WIDEBAND_SPEECH },
662
	{ USB_DEVICE(0x13d3, 0x3610), .driver_info = BTUSB_MEDIATEK |
663
						     BTUSB_WIDEBAND_SPEECH },
664

665
	/* MediaTek MT7922A Bluetooth devices */
666
	{ USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
667
						     BTUSB_WIDEBAND_SPEECH },
668
	{ USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
669
						     BTUSB_WIDEBAND_SPEECH },
670
	{ USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
671
						     BTUSB_WIDEBAND_SPEECH },
672
	{ USB_DEVICE(0x0489, 0xe0e4), .driver_info = BTUSB_MEDIATEK |
673
						     BTUSB_WIDEBAND_SPEECH },
674
	{ USB_DEVICE(0x0489, 0xe0f1), .driver_info = BTUSB_MEDIATEK |
675
						     BTUSB_WIDEBAND_SPEECH },
676
	{ USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK |
677
						     BTUSB_WIDEBAND_SPEECH },
678
	{ USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
679
						     BTUSB_WIDEBAND_SPEECH },
680
	{ USB_DEVICE(0x0489, 0xe0f6), .driver_info = BTUSB_MEDIATEK |
681
						     BTUSB_WIDEBAND_SPEECH },
682
	{ USB_DEVICE(0x0489, 0xe102), .driver_info = BTUSB_MEDIATEK |
683
						     BTUSB_WIDEBAND_SPEECH },
684
	{ USB_DEVICE(0x0489, 0xe152), .driver_info = BTUSB_MEDIATEK |
685
						     BTUSB_WIDEBAND_SPEECH },
686
	{ USB_DEVICE(0x0489, 0xe153), .driver_info = BTUSB_MEDIATEK |
687
						     BTUSB_WIDEBAND_SPEECH },
688
	{ USB_DEVICE(0x04ca, 0x3804), .driver_info = BTUSB_MEDIATEK |
689
						     BTUSB_WIDEBAND_SPEECH },
690
	{ USB_DEVICE(0x04ca, 0x38e4), .driver_info = BTUSB_MEDIATEK |
691
						     BTUSB_WIDEBAND_SPEECH },
692
	{ USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
693
						     BTUSB_WIDEBAND_SPEECH },
694
	{ USB_DEVICE(0x13d3, 0x3584), .driver_info = BTUSB_MEDIATEK |
695
						     BTUSB_WIDEBAND_SPEECH },
696
	{ USB_DEVICE(0x13d3, 0x3605), .driver_info = BTUSB_MEDIATEK |
697
						     BTUSB_WIDEBAND_SPEECH },
698
	{ USB_DEVICE(0x13d3, 0x3607), .driver_info = BTUSB_MEDIATEK |
699
						     BTUSB_WIDEBAND_SPEECH },
700
	{ USB_DEVICE(0x13d3, 0x3614), .driver_info = BTUSB_MEDIATEK |
701
						     BTUSB_WIDEBAND_SPEECH },
702
	{ USB_DEVICE(0x13d3, 0x3615), .driver_info = BTUSB_MEDIATEK |
703
						     BTUSB_WIDEBAND_SPEECH },
704
	{ USB_DEVICE(0x13d3, 0x3633), .driver_info = BTUSB_MEDIATEK |
705
						     BTUSB_WIDEBAND_SPEECH },
706
	{ USB_DEVICE(0x35f5, 0x7922), .driver_info = BTUSB_MEDIATEK |
707
						     BTUSB_WIDEBAND_SPEECH },
708

709
	/* Additional MediaTek MT7925 Bluetooth devices */
710
	{ USB_DEVICE(0x0489, 0xe111), .driver_info = BTUSB_MEDIATEK |
711
						     BTUSB_WIDEBAND_SPEECH },
712
	{ USB_DEVICE(0x0489, 0xe113), .driver_info = BTUSB_MEDIATEK |
713
						     BTUSB_WIDEBAND_SPEECH },
714
	{ USB_DEVICE(0x0489, 0xe118), .driver_info = BTUSB_MEDIATEK |
715
						     BTUSB_WIDEBAND_SPEECH },
716
	{ USB_DEVICE(0x0489, 0xe11e), .driver_info = BTUSB_MEDIATEK |
717
						     BTUSB_WIDEBAND_SPEECH },
718
	{ USB_DEVICE(0x0489, 0xe124), .driver_info = BTUSB_MEDIATEK |
719
						     BTUSB_WIDEBAND_SPEECH },
720
	{ USB_DEVICE(0x0489, 0xe139), .driver_info = BTUSB_MEDIATEK |
721
						     BTUSB_WIDEBAND_SPEECH },
722
	{ USB_DEVICE(0x0489, 0xe14e), .driver_info = BTUSB_MEDIATEK |
723
						     BTUSB_WIDEBAND_SPEECH },
724
	{ USB_DEVICE(0x0489, 0xe14f), .driver_info = BTUSB_MEDIATEK |
725
						     BTUSB_WIDEBAND_SPEECH },
726
	{ USB_DEVICE(0x0489, 0xe150), .driver_info = BTUSB_MEDIATEK |
727
						     BTUSB_WIDEBAND_SPEECH },
728
	{ USB_DEVICE(0x0489, 0xe151), .driver_info = BTUSB_MEDIATEK |
729
						     BTUSB_WIDEBAND_SPEECH },
730
	{ USB_DEVICE(0x13d3, 0x3602), .driver_info = BTUSB_MEDIATEK |
731
						     BTUSB_WIDEBAND_SPEECH },
732
	{ USB_DEVICE(0x13d3, 0x3603), .driver_info = BTUSB_MEDIATEK |
733
						     BTUSB_WIDEBAND_SPEECH },
734
	{ USB_DEVICE(0x13d3, 0x3604), .driver_info = BTUSB_MEDIATEK |
735
						     BTUSB_WIDEBAND_SPEECH },
736
	{ USB_DEVICE(0x13d3, 0x3608), .driver_info = BTUSB_MEDIATEK |
737
						     BTUSB_WIDEBAND_SPEECH },
738
	{ USB_DEVICE(0x13d3, 0x3613), .driver_info = BTUSB_MEDIATEK |
739
						     BTUSB_WIDEBAND_SPEECH },
740
	{ USB_DEVICE(0x13d3, 0x3627), .driver_info = BTUSB_MEDIATEK |
741
						     BTUSB_WIDEBAND_SPEECH },
742
	{ USB_DEVICE(0x13d3, 0x3628), .driver_info = BTUSB_MEDIATEK |
743
						     BTUSB_WIDEBAND_SPEECH },
744
	{ USB_DEVICE(0x13d3, 0x3630), .driver_info = BTUSB_MEDIATEK |
745
						     BTUSB_WIDEBAND_SPEECH },
746
	{ USB_DEVICE(0x2c7c, 0x7009), .driver_info = BTUSB_MEDIATEK |
747
						     BTUSB_WIDEBAND_SPEECH },
748

749
	/* Additional Realtek 8723AE Bluetooth devices */
750
	{ USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
751
	{ USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
752

753
	/* Additional Realtek 8723BE Bluetooth devices */
754
	{ USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
755
	{ USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
756
	{ USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
757
	{ USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
758
	{ USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
759
	{ USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
760
	{ USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
761

762
	/* Additional Realtek 8723BU Bluetooth devices */
763
	{ USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
764

765
	/* Additional Realtek 8723DE Bluetooth devices */
766
	{ USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
767
	{ USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
768

769
	/* Additional Realtek 8761BUV Bluetooth devices */
770
	{ USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
771
						     BTUSB_WIDEBAND_SPEECH },
772
	{ USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
773
	  					     BTUSB_WIDEBAND_SPEECH },
774
	{ USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
775
						     BTUSB_WIDEBAND_SPEECH },
776
	{ USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
777
						     BTUSB_WIDEBAND_SPEECH },
778
	{ USB_DEVICE(0x6655, 0x8771), .driver_info = BTUSB_REALTEK |
779
						     BTUSB_WIDEBAND_SPEECH },
780
	{ USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
781
						     BTUSB_WIDEBAND_SPEECH },
782
	{ USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
783
						     BTUSB_WIDEBAND_SPEECH },
784

785
	/* Additional Realtek 8821AE Bluetooth devices */
786
	{ USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
787
	{ USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
788
	{ USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
789
	{ USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
790
	{ USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
791

792
	/* Additional Realtek 8822BE Bluetooth devices */
793
	{ USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
794
	{ USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
795

796
	/* Additional Realtek 8822CE Bluetooth devices */
797
	{ USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
798
						     BTUSB_WIDEBAND_SPEECH },
799
	{ USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
800
						     BTUSB_WIDEBAND_SPEECH },
801
	{ USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
802
						     BTUSB_WIDEBAND_SPEECH },
803
	{ USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
804
						     BTUSB_WIDEBAND_SPEECH },
805
	{ USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
806
						     BTUSB_WIDEBAND_SPEECH },
807
	{ USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
808
						     BTUSB_WIDEBAND_SPEECH },
809
	{ USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
810
						     BTUSB_WIDEBAND_SPEECH },
811
	{ USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
812
						     BTUSB_WIDEBAND_SPEECH },
813
	{ USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
814
						     BTUSB_WIDEBAND_SPEECH },
815
	{ USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
816
						     BTUSB_WIDEBAND_SPEECH },
817
	{ USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
818
						     BTUSB_WIDEBAND_SPEECH },
819

820
	/* Barrot Technology Bluetooth devices */
821
	{ USB_DEVICE(0x33fa, 0x0010), .driver_info = BTUSB_BARROT },
822
	{ USB_DEVICE(0x33fa, 0x0012), .driver_info = BTUSB_BARROT },
823

824
	/* Actions Semiconductor ATS2851 based devices */
825
	{ USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI },
826

827
	/* Silicon Wave based devices */
828
	{ USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
829

830
	{ }	/* Terminating entry */
831
};
832

833
/* The Bluetooth USB module build into some devices needs to be reset on resume,
834
 * this is a problem with the platform (likely shutting off all power) not with
835
 * the module itself. So we use a DMI list to match known broken platforms.
836
 */
837
static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
838
	{
839
		/* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
840
		.matches = {
841
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
842
			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
843
		},
844
	},
845
	{
846
		/* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
847
		.matches = {
848
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
849
			DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
850
		},
851
	},
852
	{
853
		/* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
854
		.matches = {
855
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
856
			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
857
		},
858
	},
859
	{}
860
};
861

862
struct qca_dump_info {
863
	/* fields for dump collection */
864
	u16 id_vendor;
865
	u16 id_product;
866
	u32 fw_version;
867
	u32 controller_id;
868
	u32 ram_dump_size;
869
	u16 ram_dump_seqno;
870
};
871

872
#define BTUSB_MAX_ISOC_FRAMES	10
873

874
#define BTUSB_INTR_RUNNING	0
875
#define BTUSB_BULK_RUNNING	1
876
#define BTUSB_ISOC_RUNNING	2
877
#define BTUSB_SUSPENDING	3
878
#define BTUSB_DID_ISO_RESUME	4
879
#define BTUSB_BOOTLOADER	5
880
#define BTUSB_DOWNLOADING	6
881
#define BTUSB_FIRMWARE_LOADED	7
882
#define BTUSB_FIRMWARE_FAILED	8
883
#define BTUSB_BOOTING		9
884
#define BTUSB_DIAG_RUNNING	10
885
#define BTUSB_OOB_WAKE_ENABLED	11
886
#define BTUSB_HW_RESET_ACTIVE	12
887
#define BTUSB_TX_WAIT_VND_EVT	13
888
#define BTUSB_WAKEUP_AUTOSUSPEND	14
889
#define BTUSB_USE_ALT3_FOR_WBS	15
890
#define BTUSB_ALT6_CONTINUOUS_TX	16
891
#define BTUSB_HW_SSR_ACTIVE	17
892

893
struct btusb_data {
894
	struct hci_dev       *hdev;
895
	struct usb_device    *udev;
896
	struct usb_interface *intf;
897
	struct usb_interface *isoc;
898
	struct usb_interface *diag;
899
	unsigned isoc_ifnum;
900

901
	unsigned long flags;
902

903
	bool poll_sync;
904
	int intr_interval;
905
	struct work_struct  work;
906
	struct work_struct  waker;
907
	struct delayed_work rx_work;
908

909
	struct sk_buff_head acl_q;
910

911
	struct usb_anchor deferred;
912
	struct usb_anchor tx_anchor;
913
	int tx_in_flight;
914
	spinlock_t txlock;
915

916
	struct usb_anchor intr_anchor;
917
	struct usb_anchor bulk_anchor;
918
	struct usb_anchor isoc_anchor;
919
	struct usb_anchor diag_anchor;
920
	struct usb_anchor ctrl_anchor;
921
	spinlock_t rxlock;
922

923
	struct sk_buff *evt_skb;
924
	struct sk_buff *acl_skb;
925
	struct sk_buff *sco_skb;
926

927
	struct usb_endpoint_descriptor *intr_ep;
928
	struct usb_endpoint_descriptor *bulk_tx_ep;
929
	struct usb_endpoint_descriptor *bulk_rx_ep;
930
	struct usb_endpoint_descriptor *isoc_tx_ep;
931
	struct usb_endpoint_descriptor *isoc_rx_ep;
932
	struct usb_endpoint_descriptor *diag_tx_ep;
933
	struct usb_endpoint_descriptor *diag_rx_ep;
934

935
	struct gpio_desc *reset_gpio;
936

937
	__u8 cmdreq_type;
938
	__u8 cmdreq;
939

940
	unsigned int sco_num;
941
	unsigned int air_mode;
942
	bool usb_alt6_packet_flow;
943
	int isoc_altsetting;
944
	int suspend_count;
945

946
	int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
947
	int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
948
	int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
949

950
	int (*setup_on_usb)(struct hci_dev *hdev);
951

952
	int (*suspend)(struct hci_dev *hdev);
953
	int (*resume)(struct hci_dev *hdev);
954
	int (*disconnect)(struct hci_dev *hdev);
955

956
	int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
957

958
	struct qca_dump_info qca_dump;
959
};
960

961
static void btusb_reset(struct hci_dev *hdev)
962
{
963
	struct btusb_data *data;
964
	int err;
965

966
	data = hci_get_drvdata(hdev);
967
	/* This is not an unbalanced PM reference since the device will reset */
968
	err = usb_autopm_get_interface(data->intf);
969
	if (err) {
970
		bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err);
971
		return;
972
	}
973

974
	bt_dev_err(hdev, "Resetting usb device.");
975
	usb_queue_reset_device(data->intf);
976
}
977

978
static void btusb_intel_reset(struct hci_dev *hdev)
979
{
980
	struct btusb_data *data = hci_get_drvdata(hdev);
981
	struct gpio_desc *reset_gpio = data->reset_gpio;
982
	struct btintel_data *intel_data = hci_get_priv(hdev);
983

984
	if (intel_data->acpi_reset_method) {
985
		if (test_and_set_bit(INTEL_ACPI_RESET_ACTIVE, intel_data->flags)) {
986
			bt_dev_err(hdev, "acpi: last reset failed ? Not resetting again");
987
			return;
988
		}
989

990
		bt_dev_err(hdev, "Initiating acpi reset method");
991
		/* If ACPI reset method fails, lets try with legacy GPIO
992
		 * toggling
993
		 */
994
		if (!intel_data->acpi_reset_method(hdev)) {
995
			return;
996
		}
997
	}
998

999
	if (!reset_gpio) {
1000
		btusb_reset(hdev);
1001
		return;
1002
	}
1003

1004
	/*
1005
	 * Toggle the hard reset line if the platform provides one. The reset
1006
	 * is going to yank the device off the USB and then replug. So doing
1007
	 * once is enough. The cleanup is handled correctly on the way out
1008
	 * (standard USB disconnect), and the new device is detected cleanly
1009
	 * and bound to the driver again like it should be.
1010
	 */
1011
	if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
1012
		bt_dev_err(hdev, "last reset failed? Not resetting again");
1013
		return;
1014
	}
1015

1016
	bt_dev_err(hdev, "Initiating HW reset via gpio");
1017
	gpiod_set_value_cansleep(reset_gpio, 1);
1018
	msleep(100);
1019
	gpiod_set_value_cansleep(reset_gpio, 0);
1020
}
1021

1022
#define RTK_DEVCOREDUMP_CODE_MEMDUMP		0x01
1023
#define RTK_DEVCOREDUMP_CODE_HW_ERR		0x02
1024
#define RTK_DEVCOREDUMP_CODE_CMD_TIMEOUT	0x03
1025

1026
#define RTK_SUB_EVENT_CODE_COREDUMP		0x34
1027

1028
struct rtk_dev_coredump_hdr {
1029
	u8 type;
1030
	u8 code;
1031
	u8 reserved[2];
1032
} __packed;
1033

1034
static inline void btusb_rtl_alloc_devcoredump(struct hci_dev *hdev,
1035
		struct rtk_dev_coredump_hdr *hdr, u8 *buf, u32 len)
1036
{
1037
	struct sk_buff *skb;
1038

1039
	skb = alloc_skb(len + sizeof(*hdr), GFP_ATOMIC);
1040
	if (!skb)
1041
		return;
1042

1043
	skb_put_data(skb, hdr, sizeof(*hdr));
1044
	if (len)
1045
		skb_put_data(skb, buf, len);
1046

1047
	if (!hci_devcd_init(hdev, skb->len)) {
1048
		hci_devcd_append(hdev, skb);
1049
		hci_devcd_complete(hdev);
1050
	} else {
1051
		bt_dev_err(hdev, "RTL: Failed to generate devcoredump");
1052
		kfree_skb(skb);
1053
	}
1054
}
1055

1056
static void btusb_rtl_reset(struct hci_dev *hdev)
1057
{
1058
	struct btusb_data *data = hci_get_drvdata(hdev);
1059
	struct gpio_desc *reset_gpio = data->reset_gpio;
1060
	struct rtk_dev_coredump_hdr hdr = {
1061
		.type = RTK_DEVCOREDUMP_CODE_CMD_TIMEOUT,
1062
	};
1063

1064
	btusb_rtl_alloc_devcoredump(hdev, &hdr, NULL, 0);
1065

1066
	if (!reset_gpio) {
1067
		btusb_reset(hdev);
1068
		return;
1069
	}
1070

1071
	/* Toggle the hard reset line. The Realtek device is going to
1072
	 * yank itself off the USB and then replug. The cleanup is handled
1073
	 * correctly on the way out (standard USB disconnect), and the new
1074
	 * device is detected cleanly and bound to the driver again like
1075
	 * it should be.
1076
	 */
1077
	if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
1078
		bt_dev_err(hdev, "last reset failed? Not resetting again");
1079
		return;
1080
	}
1081

1082
	bt_dev_err(hdev, "Reset Realtek device via gpio");
1083
	gpiod_set_value_cansleep(reset_gpio, 1);
1084
	msleep(200);
1085
	gpiod_set_value_cansleep(reset_gpio, 0);
1086
}
1087

1088
static void btusb_rtl_hw_error(struct hci_dev *hdev, u8 code)
1089
{
1090
	struct rtk_dev_coredump_hdr hdr = {
1091
		.type = RTK_DEVCOREDUMP_CODE_HW_ERR,
1092
		.code = code,
1093
	};
1094

1095
	bt_dev_err(hdev, "RTL: hw err, trigger devcoredump (%d)", code);
1096

1097
	btusb_rtl_alloc_devcoredump(hdev, &hdr, NULL, 0);
1098
}
1099

1100
static void btusb_qca_reset(struct hci_dev *hdev)
1101
{
1102
	struct btusb_data *data = hci_get_drvdata(hdev);
1103
	struct gpio_desc *reset_gpio = data->reset_gpio;
1104

1105
	if (test_bit(BTUSB_HW_SSR_ACTIVE, &data->flags)) {
1106
		bt_dev_info(hdev, "Ramdump in progress, defer reset");
1107
		return;
1108
	}
1109

1110
	if (reset_gpio) {
1111
		bt_dev_err(hdev, "Reset qca device via bt_en gpio");
1112

1113
		/* Toggle the hard reset line. The qca bt device is going to
1114
		 * yank itself off the USB and then replug. The cleanup is handled
1115
		 * correctly on the way out (standard USB disconnect), and the new
1116
		 * device is detected cleanly and bound to the driver again like
1117
		 * it should be.
1118
		 */
1119
		if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
1120
			bt_dev_err(hdev, "last reset failed? Not resetting again");
1121
			return;
1122
		}
1123

1124
		gpiod_set_value_cansleep(reset_gpio, 0);
1125
		msleep(200);
1126
		gpiod_set_value_cansleep(reset_gpio, 1);
1127

1128
		return;
1129
	}
1130

1131
	btusb_reset(hdev);
1132
}
1133

1134
static inline void btusb_free_frags(struct btusb_data *data)
1135
{
1136
	unsigned long flags;
1137

1138
	spin_lock_irqsave(&data->rxlock, flags);
1139

1140
	dev_kfree_skb_irq(data->evt_skb);
1141
	data->evt_skb = NULL;
1142

1143
	dev_kfree_skb_irq(data->acl_skb);
1144
	data->acl_skb = NULL;
1145

1146
	dev_kfree_skb_irq(data->sco_skb);
1147
	data->sco_skb = NULL;
1148

1149
	spin_unlock_irqrestore(&data->rxlock, flags);
1150
}
1151

1152
static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
1153
{
1154
	if (data->intr_interval) {
1155
		/* Trigger dequeue immediately if an event is received */
1156
		schedule_delayed_work(&data->rx_work, 0);
1157
	}
1158

1159
	return data->recv_event(data->hdev, skb);
1160
}
1161

1162
static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
1163
{
1164
	struct sk_buff *skb;
1165
	unsigned long flags;
1166
	int err = 0;
1167

1168
	spin_lock_irqsave(&data->rxlock, flags);
1169
	skb = data->evt_skb;
1170

1171
	while (count) {
1172
		int len;
1173

1174
		if (!skb) {
1175
			skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
1176
			if (!skb) {
1177
				err = -ENOMEM;
1178
				break;
1179
			}
1180

1181
			hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1182
			hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
1183
		}
1184

1185
		len = min_t(uint, hci_skb_expect(skb), count);
1186
		skb_put_data(skb, buffer, len);
1187

1188
		count -= len;
1189
		buffer += len;
1190
		hci_skb_expect(skb) -= len;
1191

1192
		if (skb->len == HCI_EVENT_HDR_SIZE) {
1193
			/* Complete event header */
1194
			hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
1195

1196
			if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1197
				kfree_skb(skb);
1198
				skb = NULL;
1199

1200
				err = -EILSEQ;
1201
				break;
1202
			}
1203
		}
1204

1205
		if (!hci_skb_expect(skb)) {
1206
			/* Each chunk should correspond to at least 1 or more
1207
			 * events so if there are still bytes left that doesn't
1208
			 * constitute a new event this is likely a bug in the
1209
			 * controller.
1210
			 */
1211
			if (count && count < HCI_EVENT_HDR_SIZE) {
1212
				bt_dev_warn(data->hdev,
1213
					"Unexpected continuation: %d bytes",
1214
					count);
1215
				count = 0;
1216
			}
1217

1218
			/* Complete frame */
1219
			btusb_recv_event(data, skb);
1220
			skb = NULL;
1221
		}
1222
	}
1223

1224
	data->evt_skb = skb;
1225
	spin_unlock_irqrestore(&data->rxlock, flags);
1226

1227
	return err;
1228
}
1229

1230
static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
1231
{
1232
	/* Only queue ACL packet if intr_interval is set as it means
1233
	 * force_poll_sync has been enabled.
1234
	 */
1235
	if (!data->intr_interval)
1236
		return data->recv_acl(data->hdev, skb);
1237

1238
	skb_queue_tail(&data->acl_q, skb);
1239
	schedule_delayed_work(&data->rx_work, data->intr_interval);
1240

1241
	return 0;
1242
}
1243

1244
static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
1245
{
1246
	struct sk_buff *skb;
1247
	unsigned long flags;
1248
	int err = 0;
1249

1250
	spin_lock_irqsave(&data->rxlock, flags);
1251
	skb = data->acl_skb;
1252

1253
	while (count) {
1254
		int len;
1255

1256
		if (!skb) {
1257
			skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
1258
			if (!skb) {
1259
				err = -ENOMEM;
1260
				break;
1261
			}
1262

1263
			hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
1264
			hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
1265
		}
1266

1267
		len = min_t(uint, hci_skb_expect(skb), count);
1268
		skb_put_data(skb, buffer, len);
1269

1270
		count -= len;
1271
		buffer += len;
1272
		hci_skb_expect(skb) -= len;
1273

1274
		if (skb->len == HCI_ACL_HDR_SIZE) {
1275
			__le16 dlen = hci_acl_hdr(skb)->dlen;
1276

1277
			/* Complete ACL header */
1278
			hci_skb_expect(skb) = __le16_to_cpu(dlen);
1279

1280
			if (skb_tailroom(skb) < hci_skb_expect(skb)) {
1281
				kfree_skb(skb);
1282
				skb = NULL;
1283

1284
				err = -EILSEQ;
1285
				break;
1286
			}
1287
		}
1288

1289
		if (!hci_skb_expect(skb)) {
1290
			/* Complete frame */
1291
			btusb_recv_acl(data, skb);
1292
			skb = NULL;
1293
		}
1294
	}
1295

1296
	data->acl_skb = skb;
1297
	spin_unlock_irqrestore(&data->rxlock, flags);
1298

1299
	return err;
1300
}
1301

1302
static bool btusb_validate_sco_handle(struct hci_dev *hdev,
1303
				      struct hci_sco_hdr *hdr)
1304
{
1305
	__u16 handle;
1306

1307
	if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL))
1308
		// Can't validate, userspace controls everything.
1309
		return true;
1310

1311
	/*
1312
	 * USB isochronous transfers are not designed to be reliable and may
1313
	 * lose fragments.  When this happens, the next first fragment
1314
	 * encountered might actually be a continuation fragment.
1315
	 * Validate the handle to detect it and drop it, or else the upper
1316
	 * layer will get garbage for a while.
1317
	 */
1318

1319
	handle = hci_handle(__le16_to_cpu(hdr->handle));
1320

1321
	switch (hci_conn_lookup_type(hdev, handle)) {
1322
	case SCO_LINK:
1323
	case ESCO_LINK:
1324
		return true;
1325
	default:
1326
		return false;
1327
	}
1328
}
1329

1330
static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
1331
{
1332
	struct sk_buff *skb;
1333
	unsigned long flags;
1334
	int err = 0;
1335

1336
	spin_lock_irqsave(&data->rxlock, flags);
1337
	skb = data->sco_skb;
1338

1339
	while (count) {
1340
		int len;
1341

1342
		if (!skb) {
1343
			skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
1344
			if (!skb) {
1345
				err = -ENOMEM;
1346
				break;
1347
			}
1348

1349
			hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
1350
			hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
1351
		}
1352

1353
		len = min_t(uint, hci_skb_expect(skb), count);
1354
		skb_put_data(skb, buffer, len);
1355

1356
		count -= len;
1357
		buffer += len;
1358
		hci_skb_expect(skb) -= len;
1359

1360
		if (skb->len == HCI_SCO_HDR_SIZE) {
1361
			/* Complete SCO header */
1362
			struct hci_sco_hdr *hdr = hci_sco_hdr(skb);
1363

1364
			hci_skb_expect(skb) = hdr->dlen;
1365

1366
			if (skb_tailroom(skb) < hci_skb_expect(skb) ||
1367
			    !btusb_validate_sco_handle(data->hdev, hdr)) {
1368
				kfree_skb(skb);
1369
				skb = NULL;
1370

1371
				err = -EILSEQ;
1372
				break;
1373
			}
1374
		}
1375

1376
		if (!hci_skb_expect(skb)) {
1377
			/* Complete frame */
1378
			hci_recv_frame(data->hdev, skb);
1379
			skb = NULL;
1380
		}
1381
	}
1382

1383
	data->sco_skb = skb;
1384
	spin_unlock_irqrestore(&data->rxlock, flags);
1385

1386
	return err;
1387
}
1388

1389
static void btusb_intr_complete(struct urb *urb)
1390
{
1391
	struct hci_dev *hdev = urb->context;
1392
	struct btusb_data *data = hci_get_drvdata(hdev);
1393
	int err;
1394

1395
	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1396
	       urb->actual_length);
1397

1398
	if (!test_bit(HCI_RUNNING, &hdev->flags))
1399
		return;
1400

1401
	if (urb->status == 0) {
1402
		hdev->stat.byte_rx += urb->actual_length;
1403

1404
		if (btusb_recv_intr(data, urb->transfer_buffer,
1405
				    urb->actual_length) < 0) {
1406
			bt_dev_err(hdev, "corrupted event packet");
1407
			hdev->stat.err_rx++;
1408
		}
1409
	} else if (urb->status == -ENOENT) {
1410
		/* Avoid suspend failed when usb_kill_urb */
1411
		return;
1412
	}
1413

1414
	if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1415
		return;
1416

1417
	usb_mark_last_busy(data->udev);
1418
	usb_anchor_urb(urb, &data->intr_anchor);
1419

1420
	err = usb_submit_urb(urb, GFP_ATOMIC);
1421
	if (err < 0) {
1422
		/* -EPERM: urb is being killed;
1423
		 * -ENODEV: device got disconnected
1424
		 */
1425
		if (err != -EPERM && err != -ENODEV)
1426
			bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1427
				   urb, -err);
1428
		if (err != -EPERM)
1429
			hci_cmd_sync_cancel(hdev, -err);
1430
		usb_unanchor_urb(urb);
1431
	}
1432
}
1433

1434
static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1435
{
1436
	struct btusb_data *data = hci_get_drvdata(hdev);
1437
	struct urb *urb;
1438
	unsigned char *buf;
1439
	unsigned int pipe;
1440
	int err, size;
1441

1442
	BT_DBG("%s", hdev->name);
1443

1444
	if (!data->intr_ep)
1445
		return -ENODEV;
1446

1447
	urb = usb_alloc_urb(0, mem_flags);
1448
	if (!urb)
1449
		return -ENOMEM;
1450

1451
	if (le16_to_cpu(data->udev->descriptor.idVendor)  == 0x0a12 &&
1452
	    le16_to_cpu(data->udev->descriptor.idProduct) == 0x0001)
1453
		/* Fake CSR devices don't seem to support sort-transter */
1454
		size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1455
	else
1456
		/* Use maximum HCI Event size so the USB stack handles
1457
		 * ZPL/short-transfer automatically.
1458
		 */
1459
		size = HCI_MAX_EVENT_SIZE;
1460

1461
	buf = kmalloc(size, mem_flags);
1462
	if (!buf) {
1463
		usb_free_urb(urb);
1464
		return -ENOMEM;
1465
	}
1466

1467
	pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1468

1469
	usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1470
			 btusb_intr_complete, hdev, data->intr_ep->bInterval);
1471

1472
	urb->transfer_flags |= URB_FREE_BUFFER;
1473

1474
	usb_anchor_urb(urb, &data->intr_anchor);
1475

1476
	err = usb_submit_urb(urb, mem_flags);
1477
	if (err < 0) {
1478
		if (err != -EPERM && err != -ENODEV)
1479
			bt_dev_err(hdev, "urb %p submission failed (%d)",
1480
				   urb, -err);
1481
		if (err != -EPERM)
1482
			hci_cmd_sync_cancel(hdev, -err);
1483
		usb_unanchor_urb(urb);
1484
	}
1485

1486
	/* Only initialize intr_interval if URB poll sync is enabled */
1487
	if (!data->poll_sync)
1488
		goto done;
1489

1490
	/* The units are frames (milliseconds) for full and low speed devices,
1491
	 * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1492
	 * devices.
1493
	 *
1494
	 * This is done once on open/resume so it shouldn't change even if
1495
	 * force_poll_sync changes.
1496
	 */
1497
	switch (urb->dev->speed) {
1498
	case USB_SPEED_SUPER_PLUS:
1499
	case USB_SPEED_SUPER:	/* units are 125us */
1500
		data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1501
		break;
1502
	default:
1503
		data->intr_interval = msecs_to_jiffies(urb->interval);
1504
		break;
1505
	}
1506

1507
done:
1508
	usb_free_urb(urb);
1509

1510
	return err;
1511
}
1512

1513
static void btusb_bulk_complete(struct urb *urb)
1514
{
1515
	struct hci_dev *hdev = urb->context;
1516
	struct btusb_data *data = hci_get_drvdata(hdev);
1517
	int err;
1518

1519
	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1520
	       urb->actual_length);
1521

1522
	if (!test_bit(HCI_RUNNING, &hdev->flags))
1523
		return;
1524

1525
	if (urb->status == 0) {
1526
		hdev->stat.byte_rx += urb->actual_length;
1527

1528
		if (data->recv_bulk(data, urb->transfer_buffer,
1529
				    urb->actual_length) < 0) {
1530
			bt_dev_err(hdev, "corrupted ACL packet");
1531
			hdev->stat.err_rx++;
1532
		}
1533
	} else if (urb->status == -ENOENT) {
1534
		/* Avoid suspend failed when usb_kill_urb */
1535
		return;
1536
	}
1537

1538
	if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1539
		return;
1540

1541
	usb_anchor_urb(urb, &data->bulk_anchor);
1542
	usb_mark_last_busy(data->udev);
1543

1544
	err = usb_submit_urb(urb, GFP_ATOMIC);
1545
	if (err < 0) {
1546
		/* -EPERM: urb is being killed;
1547
		 * -ENODEV: device got disconnected
1548
		 */
1549
		if (err != -EPERM && err != -ENODEV)
1550
			bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1551
				   urb, -err);
1552
		usb_unanchor_urb(urb);
1553
	}
1554
}
1555

1556
static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1557
{
1558
	struct btusb_data *data = hci_get_drvdata(hdev);
1559
	struct urb *urb;
1560
	unsigned char *buf;
1561
	unsigned int pipe;
1562
	int err, size = HCI_MAX_FRAME_SIZE;
1563

1564
	BT_DBG("%s", hdev->name);
1565

1566
	if (!data->bulk_rx_ep)
1567
		return -ENODEV;
1568

1569
	urb = usb_alloc_urb(0, mem_flags);
1570
	if (!urb)
1571
		return -ENOMEM;
1572

1573
	buf = kmalloc(size, mem_flags);
1574
	if (!buf) {
1575
		usb_free_urb(urb);
1576
		return -ENOMEM;
1577
	}
1578

1579
	pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1580

1581
	usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1582
			  btusb_bulk_complete, hdev);
1583

1584
	urb->transfer_flags |= URB_FREE_BUFFER;
1585

1586
	usb_mark_last_busy(data->udev);
1587
	usb_anchor_urb(urb, &data->bulk_anchor);
1588

1589
	err = usb_submit_urb(urb, mem_flags);
1590
	if (err < 0) {
1591
		if (err != -EPERM && err != -ENODEV)
1592
			bt_dev_err(hdev, "urb %p submission failed (%d)",
1593
				   urb, -err);
1594
		usb_unanchor_urb(urb);
1595
	}
1596

1597
	usb_free_urb(urb);
1598

1599
	return err;
1600
}
1601

1602
static void btusb_isoc_complete(struct urb *urb)
1603
{
1604
	struct hci_dev *hdev = urb->context;
1605
	struct btusb_data *data = hci_get_drvdata(hdev);
1606
	int i, err;
1607

1608
	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1609
	       urb->actual_length);
1610

1611
	if (!test_bit(HCI_RUNNING, &hdev->flags))
1612
		return;
1613

1614
	if (urb->status == 0) {
1615
		for (i = 0; i < urb->number_of_packets; i++) {
1616
			unsigned int offset = urb->iso_frame_desc[i].offset;
1617
			unsigned int length = urb->iso_frame_desc[i].actual_length;
1618

1619
			if (urb->iso_frame_desc[i].status)
1620
				continue;
1621

1622
			hdev->stat.byte_rx += length;
1623

1624
			if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1625
					    length) < 0) {
1626
				bt_dev_err(hdev, "corrupted SCO packet");
1627
				hdev->stat.err_rx++;
1628
			}
1629
		}
1630
	} else if (urb->status == -ENOENT) {
1631
		/* Avoid suspend failed when usb_kill_urb */
1632
		return;
1633
	}
1634

1635
	if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1636
		return;
1637

1638
	usb_anchor_urb(urb, &data->isoc_anchor);
1639

1640
	err = usb_submit_urb(urb, GFP_ATOMIC);
1641
	if (err < 0) {
1642
		/* -EPERM: urb is being killed;
1643
		 * -ENODEV: device got disconnected
1644
		 */
1645
		if (err != -EPERM && err != -ENODEV)
1646
			bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1647
				   urb, -err);
1648
		usb_unanchor_urb(urb);
1649
	}
1650
}
1651

1652
static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1653
					       int mtu, struct btusb_data *data)
1654
{
1655
	int i = 0, offset = 0;
1656
	unsigned int interval;
1657

1658
	BT_DBG("len %d mtu %d", len, mtu);
1659

1660
	/* For mSBC ALT 6 settings some chips need to transmit the data
1661
	 * continuously without the zero length of USB packets.
1662
	 */
1663
	if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags))
1664
		goto ignore_usb_alt6_packet_flow;
1665

1666
	/* For mSBC ALT 6 setting the host will send the packet at continuous
1667
	 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1668
	 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1669
	 * To maintain the rate we send 63bytes of usb packets alternatively for
1670
	 * 7ms and 8ms to maintain the rate as 7.5ms.
1671
	 */
1672
	if (data->usb_alt6_packet_flow) {
1673
		interval = 7;
1674
		data->usb_alt6_packet_flow = false;
1675
	} else {
1676
		interval = 6;
1677
		data->usb_alt6_packet_flow = true;
1678
	}
1679

1680
	for (i = 0; i < interval; i++) {
1681
		urb->iso_frame_desc[i].offset = offset;
1682
		urb->iso_frame_desc[i].length = offset;
1683
	}
1684

1685
ignore_usb_alt6_packet_flow:
1686
	if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1687
		urb->iso_frame_desc[i].offset = offset;
1688
		urb->iso_frame_desc[i].length = len;
1689
		i++;
1690
	}
1691

1692
	urb->number_of_packets = i;
1693
}
1694

1695
static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1696
{
1697
	int i, offset = 0;
1698

1699
	BT_DBG("len %d mtu %d", len, mtu);
1700

1701
	for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1702
					i++, offset += mtu, len -= mtu) {
1703
		urb->iso_frame_desc[i].offset = offset;
1704
		urb->iso_frame_desc[i].length = mtu;
1705
	}
1706

1707
	if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1708
		urb->iso_frame_desc[i].offset = offset;
1709
		urb->iso_frame_desc[i].length = len;
1710
		i++;
1711
	}
1712

1713
	urb->number_of_packets = i;
1714
}
1715

1716
static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1717
{
1718
	struct btusb_data *data = hci_get_drvdata(hdev);
1719
	struct urb *urb;
1720
	unsigned char *buf;
1721
	unsigned int pipe;
1722
	int err, size;
1723

1724
	BT_DBG("%s", hdev->name);
1725

1726
	if (!data->isoc_rx_ep)
1727
		return -ENODEV;
1728

1729
	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1730
	if (!urb)
1731
		return -ENOMEM;
1732

1733
	size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1734
						BTUSB_MAX_ISOC_FRAMES;
1735

1736
	buf = kmalloc(size, mem_flags);
1737
	if (!buf) {
1738
		usb_free_urb(urb);
1739
		return -ENOMEM;
1740
	}
1741

1742
	pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1743

1744
	usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1745
			 hdev, data->isoc_rx_ep->bInterval);
1746

1747
	urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1748

1749
	__fill_isoc_descriptor(urb, size,
1750
			       le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1751

1752
	usb_anchor_urb(urb, &data->isoc_anchor);
1753

1754
	err = usb_submit_urb(urb, mem_flags);
1755
	if (err < 0) {
1756
		if (err != -EPERM && err != -ENODEV)
1757
			bt_dev_err(hdev, "urb %p submission failed (%d)",
1758
				   urb, -err);
1759
		usb_unanchor_urb(urb);
1760
	}
1761

1762
	usb_free_urb(urb);
1763

1764
	return err;
1765
}
1766

1767
static void btusb_diag_complete(struct urb *urb)
1768
{
1769
	struct hci_dev *hdev = urb->context;
1770
	struct btusb_data *data = hci_get_drvdata(hdev);
1771
	int err;
1772

1773
	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1774
	       urb->actual_length);
1775

1776
	if (urb->status == 0) {
1777
		struct sk_buff *skb;
1778

1779
		skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1780
		if (skb) {
1781
			skb_put_data(skb, urb->transfer_buffer,
1782
				     urb->actual_length);
1783
			hci_recv_diag(hdev, skb);
1784
		}
1785
	} else if (urb->status == -ENOENT) {
1786
		/* Avoid suspend failed when usb_kill_urb */
1787
		return;
1788
	}
1789

1790
	if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1791
		return;
1792

1793
	usb_anchor_urb(urb, &data->diag_anchor);
1794
	usb_mark_last_busy(data->udev);
1795

1796
	err = usb_submit_urb(urb, GFP_ATOMIC);
1797
	if (err < 0) {
1798
		/* -EPERM: urb is being killed;
1799
		 * -ENODEV: device got disconnected
1800
		 */
1801
		if (err != -EPERM && err != -ENODEV)
1802
			bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1803
				   urb, -err);
1804
		usb_unanchor_urb(urb);
1805
	}
1806
}
1807

1808
static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1809
{
1810
	struct btusb_data *data = hci_get_drvdata(hdev);
1811
	struct urb *urb;
1812
	unsigned char *buf;
1813
	unsigned int pipe;
1814
	int err, size = HCI_MAX_FRAME_SIZE;
1815

1816
	BT_DBG("%s", hdev->name);
1817

1818
	if (!data->diag_rx_ep)
1819
		return -ENODEV;
1820

1821
	urb = usb_alloc_urb(0, mem_flags);
1822
	if (!urb)
1823
		return -ENOMEM;
1824

1825
	buf = kmalloc(size, mem_flags);
1826
	if (!buf) {
1827
		usb_free_urb(urb);
1828
		return -ENOMEM;
1829
	}
1830

1831
	pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1832

1833
	usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1834
			  btusb_diag_complete, hdev);
1835

1836
	urb->transfer_flags |= URB_FREE_BUFFER;
1837

1838
	usb_mark_last_busy(data->udev);
1839
	usb_anchor_urb(urb, &data->diag_anchor);
1840

1841
	err = usb_submit_urb(urb, mem_flags);
1842
	if (err < 0) {
1843
		if (err != -EPERM && err != -ENODEV)
1844
			bt_dev_err(hdev, "urb %p submission failed (%d)",
1845
				   urb, -err);
1846
		usb_unanchor_urb(urb);
1847
	}
1848

1849
	usb_free_urb(urb);
1850

1851
	return err;
1852
}
1853

1854
static void btusb_tx_complete(struct urb *urb)
1855
{
1856
	struct sk_buff *skb = urb->context;
1857
	struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1858
	struct btusb_data *data = hci_get_drvdata(hdev);
1859
	unsigned long flags;
1860

1861
	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1862
	       urb->actual_length);
1863

1864
	if (!test_bit(HCI_RUNNING, &hdev->flags))
1865
		goto done;
1866

1867
	if (!urb->status) {
1868
		hdev->stat.byte_tx += urb->transfer_buffer_length;
1869
	} else {
1870
		if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1871
			hci_cmd_sync_cancel(hdev, -urb->status);
1872
		hdev->stat.err_tx++;
1873
	}
1874

1875
done:
1876
	spin_lock_irqsave(&data->txlock, flags);
1877
	data->tx_in_flight--;
1878
	spin_unlock_irqrestore(&data->txlock, flags);
1879

1880
	kfree(urb->setup_packet);
1881

1882
	kfree_skb(skb);
1883
}
1884

1885
static void btusb_isoc_tx_complete(struct urb *urb)
1886
{
1887
	struct sk_buff *skb = urb->context;
1888
	struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1889

1890
	BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1891
	       urb->actual_length);
1892

1893
	if (!test_bit(HCI_RUNNING, &hdev->flags))
1894
		goto done;
1895

1896
	if (!urb->status)
1897
		hdev->stat.byte_tx += urb->transfer_buffer_length;
1898
	else
1899
		hdev->stat.err_tx++;
1900

1901
done:
1902
	kfree(urb->setup_packet);
1903

1904
	kfree_skb(skb);
1905
}
1906

1907
static int btusb_open(struct hci_dev *hdev)
1908
{
1909
	struct btusb_data *data = hci_get_drvdata(hdev);
1910
	int err;
1911

1912
	BT_DBG("%s", hdev->name);
1913

1914
	err = usb_autopm_get_interface(data->intf);
1915
	if (err < 0)
1916
		return err;
1917

1918
	/* Patching USB firmware files prior to starting any URBs of HCI path
1919
	 * It is more safe to use USB bulk channel for downloading USB patch
1920
	 */
1921
	if (data->setup_on_usb) {
1922
		err = data->setup_on_usb(hdev);
1923
		if (err < 0)
1924
			goto setup_fail;
1925
	}
1926

1927
	data->intf->needs_remote_wakeup = 1;
1928

1929
	if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1930
		goto done;
1931

1932
	err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1933
	if (err < 0)
1934
		goto failed;
1935

1936
	err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1937
	if (err < 0) {
1938
		usb_kill_anchored_urbs(&data->intr_anchor);
1939
		goto failed;
1940
	}
1941

1942
	set_bit(BTUSB_BULK_RUNNING, &data->flags);
1943
	btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1944

1945
	if (data->diag) {
1946
		if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1947
			set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1948
	}
1949

1950
done:
1951
	usb_autopm_put_interface(data->intf);
1952
	return 0;
1953

1954
failed:
1955
	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1956
setup_fail:
1957
	usb_autopm_put_interface(data->intf);
1958
	return err;
1959
}
1960

1961
static void btusb_stop_traffic(struct btusb_data *data)
1962
{
1963
	usb_kill_anchored_urbs(&data->intr_anchor);
1964
	usb_kill_anchored_urbs(&data->bulk_anchor);
1965
	usb_kill_anchored_urbs(&data->isoc_anchor);
1966
	usb_kill_anchored_urbs(&data->diag_anchor);
1967
	usb_kill_anchored_urbs(&data->ctrl_anchor);
1968
}
1969

1970
static int btusb_close(struct hci_dev *hdev)
1971
{
1972
	struct btusb_data *data = hci_get_drvdata(hdev);
1973
	int err;
1974

1975
	BT_DBG("%s", hdev->name);
1976

1977
	cancel_delayed_work(&data->rx_work);
1978
	cancel_work_sync(&data->work);
1979
	cancel_work_sync(&data->waker);
1980

1981
	skb_queue_purge(&data->acl_q);
1982

1983
	clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1984
	clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1985
	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1986
	clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1987

1988
	btusb_stop_traffic(data);
1989
	btusb_free_frags(data);
1990

1991
	err = usb_autopm_get_interface(data->intf);
1992
	if (err < 0)
1993
		goto failed;
1994

1995
	data->intf->needs_remote_wakeup = 0;
1996

1997
	/* Enable remote wake up for auto-suspend */
1998
	if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1999
		data->intf->needs_remote_wakeup = 1;
2000

2001
	usb_autopm_put_interface(data->intf);
2002

2003
failed:
2004
	usb_scuttle_anchored_urbs(&data->deferred);
2005
	return 0;
2006
}
2007

2008
static int btusb_flush(struct hci_dev *hdev)
2009
{
2010
	struct btusb_data *data = hci_get_drvdata(hdev);
2011

2012
	BT_DBG("%s", hdev->name);
2013

2014
	cancel_delayed_work(&data->rx_work);
2015

2016
	skb_queue_purge(&data->acl_q);
2017

2018
	usb_kill_anchored_urbs(&data->tx_anchor);
2019
	btusb_free_frags(data);
2020

2021
	return 0;
2022
}
2023

2024
static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
2025
{
2026
	struct btusb_data *data = hci_get_drvdata(hdev);
2027
	struct usb_ctrlrequest *dr;
2028
	struct urb *urb;
2029
	unsigned int pipe;
2030

2031
	urb = usb_alloc_urb(0, GFP_KERNEL);
2032
	if (!urb)
2033
		return ERR_PTR(-ENOMEM);
2034

2035
	dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2036
	if (!dr) {
2037
		usb_free_urb(urb);
2038
		return ERR_PTR(-ENOMEM);
2039
	}
2040

2041
	dr->bRequestType = data->cmdreq_type;
2042
	dr->bRequest     = data->cmdreq;
2043
	dr->wIndex       = 0;
2044
	dr->wValue       = 0;
2045
	dr->wLength      = __cpu_to_le16(skb->len);
2046

2047
	pipe = usb_sndctrlpipe(data->udev, 0x00);
2048

2049
	usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2050
			     skb->data, skb->len, btusb_tx_complete, skb);
2051

2052
	skb->dev = (void *)hdev;
2053

2054
	return urb;
2055
}
2056

2057
static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
2058
{
2059
	struct btusb_data *data = hci_get_drvdata(hdev);
2060
	struct urb *urb;
2061
	unsigned int pipe;
2062

2063
	if (!data->bulk_tx_ep)
2064
		return ERR_PTR(-ENODEV);
2065

2066
	urb = usb_alloc_urb(0, GFP_KERNEL);
2067
	if (!urb)
2068
		return ERR_PTR(-ENOMEM);
2069

2070
	pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
2071

2072
	usb_fill_bulk_urb(urb, data->udev, pipe,
2073
			  skb->data, skb->len, btusb_tx_complete, skb);
2074

2075
	skb->dev = (void *)hdev;
2076

2077
	return urb;
2078
}
2079

2080
static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
2081
{
2082
	struct btusb_data *data = hci_get_drvdata(hdev);
2083
	struct urb *urb;
2084
	unsigned int pipe;
2085

2086
	if (!data->isoc_tx_ep)
2087
		return ERR_PTR(-ENODEV);
2088

2089
	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
2090
	if (!urb)
2091
		return ERR_PTR(-ENOMEM);
2092

2093
	pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
2094

2095
	usb_fill_int_urb(urb, data->udev, pipe,
2096
			 skb->data, skb->len, btusb_isoc_tx_complete,
2097
			 skb, data->isoc_tx_ep->bInterval);
2098

2099
	urb->transfer_flags  = URB_ISO_ASAP;
2100

2101
	if (data->isoc_altsetting == 6)
2102
		__fill_isoc_descriptor_msbc(urb, skb->len,
2103
					    le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
2104
					    data);
2105
	else
2106
		__fill_isoc_descriptor(urb, skb->len,
2107
				       le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
2108
	skb->dev = (void *)hdev;
2109

2110
	return urb;
2111
}
2112

2113
static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
2114
{
2115
	struct btusb_data *data = hci_get_drvdata(hdev);
2116
	int err;
2117

2118
	usb_anchor_urb(urb, &data->tx_anchor);
2119

2120
	err = usb_submit_urb(urb, GFP_KERNEL);
2121
	if (err < 0) {
2122
		if (err != -EPERM && err != -ENODEV)
2123
			bt_dev_err(hdev, "urb %p submission failed (%d)",
2124
				   urb, -err);
2125
		kfree(urb->setup_packet);
2126
		usb_unanchor_urb(urb);
2127
	} else {
2128
		usb_mark_last_busy(data->udev);
2129
	}
2130

2131
	usb_free_urb(urb);
2132
	return err;
2133
}
2134

2135
static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
2136
{
2137
	struct btusb_data *data = hci_get_drvdata(hdev);
2138
	unsigned long flags;
2139
	bool suspending;
2140

2141
	spin_lock_irqsave(&data->txlock, flags);
2142
	suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
2143
	if (!suspending)
2144
		data->tx_in_flight++;
2145
	spin_unlock_irqrestore(&data->txlock, flags);
2146

2147
	if (!suspending)
2148
		return submit_tx_urb(hdev, urb);
2149

2150
	usb_anchor_urb(urb, &data->deferred);
2151
	schedule_work(&data->waker);
2152

2153
	usb_free_urb(urb);
2154
	return 0;
2155
}
2156

2157
static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
2158
{
2159
	struct urb *urb;
2160

2161
	BT_DBG("%s", hdev->name);
2162

2163
	switch (hci_skb_pkt_type(skb)) {
2164
	case HCI_COMMAND_PKT:
2165
		urb = alloc_ctrl_urb(hdev, skb);
2166
		if (IS_ERR(urb))
2167
			return PTR_ERR(urb);
2168

2169
		hdev->stat.cmd_tx++;
2170
		return submit_or_queue_tx_urb(hdev, urb);
2171

2172
	case HCI_ACLDATA_PKT:
2173
		urb = alloc_bulk_urb(hdev, skb);
2174
		if (IS_ERR(urb))
2175
			return PTR_ERR(urb);
2176

2177
		hdev->stat.acl_tx++;
2178
		return submit_or_queue_tx_urb(hdev, urb);
2179

2180
	case HCI_SCODATA_PKT:
2181
		if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
2182
		    hci_conn_num(hdev, SCO_LINK) < 1)
2183
			return -ENODEV;
2184

2185
		urb = alloc_isoc_urb(hdev, skb);
2186
		if (IS_ERR(urb))
2187
			return PTR_ERR(urb);
2188

2189
		hdev->stat.sco_tx++;
2190
		return submit_tx_urb(hdev, urb);
2191

2192
	case HCI_ISODATA_PKT:
2193
		urb = alloc_bulk_urb(hdev, skb);
2194
		if (IS_ERR(urb))
2195
			return PTR_ERR(urb);
2196

2197
		return submit_or_queue_tx_urb(hdev, urb);
2198
	}
2199

2200
	return -EILSEQ;
2201
}
2202

2203
static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
2204
{
2205
	struct btusb_data *data = hci_get_drvdata(hdev);
2206

2207
	BT_DBG("%s evt %d", hdev->name, evt);
2208

2209
	if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
2210
		data->sco_num = hci_conn_num(hdev, SCO_LINK);
2211
		data->air_mode = evt;
2212
		schedule_work(&data->work);
2213
	}
2214
}
2215

2216
static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
2217
{
2218
	struct btusb_data *data = hci_get_drvdata(hdev);
2219
	struct usb_interface *intf = data->isoc;
2220
	struct usb_endpoint_descriptor *ep_desc;
2221
	int i, err;
2222

2223
	if (!data->isoc)
2224
		return -ENODEV;
2225

2226
	err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
2227
	if (err < 0) {
2228
		bt_dev_err(hdev, "setting interface failed (%d)", -err);
2229
		return err;
2230
	}
2231

2232
	data->isoc_altsetting = altsetting;
2233

2234
	data->isoc_tx_ep = NULL;
2235
	data->isoc_rx_ep = NULL;
2236

2237
	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2238
		ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2239

2240
		if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
2241
			data->isoc_tx_ep = ep_desc;
2242
			continue;
2243
		}
2244

2245
		if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
2246
			data->isoc_rx_ep = ep_desc;
2247
			continue;
2248
		}
2249
	}
2250

2251
	if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
2252
		bt_dev_err(hdev, "invalid SCO descriptors");
2253
		return -ENODEV;
2254
	}
2255

2256
	return 0;
2257
}
2258

2259
static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
2260
{
2261
	struct btusb_data *data = hci_get_drvdata(hdev);
2262
	int err;
2263

2264
	if (data->isoc_altsetting != new_alts) {
2265
		unsigned long flags;
2266

2267
		clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2268
		usb_kill_anchored_urbs(&data->isoc_anchor);
2269

2270
		/* When isochronous alternate setting needs to be
2271
		 * changed, because SCO connection has been added
2272
		 * or removed, a packet fragment may be left in the
2273
		 * reassembling state. This could lead to wrongly
2274
		 * assembled fragments.
2275
		 *
2276
		 * Clear outstanding fragment when selecting a new
2277
		 * alternate setting.
2278
		 */
2279
		spin_lock_irqsave(&data->rxlock, flags);
2280
		dev_kfree_skb_irq(data->sco_skb);
2281
		data->sco_skb = NULL;
2282
		spin_unlock_irqrestore(&data->rxlock, flags);
2283

2284
		err = __set_isoc_interface(hdev, new_alts);
2285
		if (err < 0)
2286
			return err;
2287
	}
2288

2289
	if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2290
		if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
2291
			clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2292
		else
2293
			btusb_submit_isoc_urb(hdev, GFP_KERNEL);
2294
	}
2295

2296
	return 0;
2297
}
2298

2299
static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
2300
							int alt)
2301
{
2302
	struct usb_interface *intf = data->isoc;
2303
	int i;
2304

2305
	BT_DBG("Looking for Alt no :%d", alt);
2306

2307
	if (!intf)
2308
		return NULL;
2309

2310
	for (i = 0; i < intf->num_altsetting; i++) {
2311
		if (intf->altsetting[i].desc.bAlternateSetting == alt)
2312
			return &intf->altsetting[i];
2313
	}
2314

2315
	return NULL;
2316
}
2317

2318
static void btusb_work(struct work_struct *work)
2319
{
2320
	struct btusb_data *data = container_of(work, struct btusb_data, work);
2321
	struct hci_dev *hdev = data->hdev;
2322
	int new_alts = 0;
2323
	int err;
2324

2325
	if (data->sco_num > 0) {
2326
		if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
2327
			err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
2328
			if (err < 0) {
2329
				clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2330
				usb_kill_anchored_urbs(&data->isoc_anchor);
2331
				return;
2332
			}
2333

2334
			set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
2335
		}
2336

2337
		if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
2338
			if (hdev->voice_setting & 0x0020) {
2339
				static const int alts[3] = { 2, 4, 5 };
2340

2341
				new_alts = alts[data->sco_num - 1];
2342
			} else {
2343
				new_alts = data->sco_num;
2344
			}
2345
		} else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
2346
			/* Bluetooth USB spec recommends alt 6 (63 bytes), but
2347
			 * many adapters do not support it.  Alt 1 appears to
2348
			 * work for all adapters that do not have alt 6, and
2349
			 * which work with WBS at all.  Some devices prefer
2350
			 * alt 3 (HCI payload >= 60 Bytes let air packet
2351
			 * data satisfy 60 bytes), requiring
2352
			 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
2353
			 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
2354
			 */
2355
			if (btusb_find_altsetting(data, 6))
2356
				new_alts = 6;
2357
			else if (btusb_find_altsetting(data, 3) &&
2358
				 hdev->sco_mtu >= 72 &&
2359
				 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
2360
				new_alts = 3;
2361
			else
2362
				new_alts = 1;
2363
		}
2364

2365
		if (btusb_switch_alt_setting(hdev, new_alts) < 0)
2366
			bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
2367
	} else {
2368
		usb_kill_anchored_urbs(&data->isoc_anchor);
2369

2370
		if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags))
2371
			__set_isoc_interface(hdev, 0);
2372

2373
		if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
2374
			usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
2375
	}
2376
}
2377

2378
static void btusb_waker(struct work_struct *work)
2379
{
2380
	struct btusb_data *data = container_of(work, struct btusb_data, waker);
2381
	int err;
2382

2383
	err = usb_autopm_get_interface(data->intf);
2384
	if (err < 0)
2385
		return;
2386

2387
	usb_autopm_put_interface(data->intf);
2388
}
2389

2390
static void btusb_rx_work(struct work_struct *work)
2391
{
2392
	struct btusb_data *data = container_of(work, struct btusb_data,
2393
					       rx_work.work);
2394
	struct sk_buff *skb;
2395

2396
	/* Dequeue ACL data received during the interval */
2397
	while ((skb = skb_dequeue(&data->acl_q)))
2398
		data->recv_acl(data->hdev, skb);
2399
}
2400

2401
static int btusb_setup_bcm92035(struct hci_dev *hdev)
2402
{
2403
	struct sk_buff *skb;
2404
	u8 val = 0x00;
2405

2406
	BT_DBG("%s", hdev->name);
2407

2408
	skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2409
	if (IS_ERR(skb))
2410
		bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2411
	else
2412
		kfree_skb(skb);
2413

2414
	return 0;
2415
}
2416

2417
static int btusb_setup_csr(struct hci_dev *hdev)
2418
{
2419
	struct btusb_data *data = hci_get_drvdata(hdev);
2420
	u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2421
	struct hci_rp_read_local_version *rp;
2422
	struct sk_buff *skb;
2423
	bool is_fake = false;
2424
	int ret;
2425

2426
	BT_DBG("%s", hdev->name);
2427

2428
	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2429
			     HCI_INIT_TIMEOUT);
2430
	if (IS_ERR(skb)) {
2431
		int err = PTR_ERR(skb);
2432
		bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2433
		return err;
2434
	}
2435

2436
	rp = skb_pull_data(skb, sizeof(*rp));
2437
	if (!rp) {
2438
		bt_dev_err(hdev, "CSR: Local version length mismatch");
2439
		kfree_skb(skb);
2440
		return -EIO;
2441
	}
2442

2443
	bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x",
2444
		    rp->hci_ver, le16_to_cpu(rp->hci_rev));
2445

2446
	bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u",
2447
		    rp->lmp_ver, le16_to_cpu(rp->lmp_subver),
2448
		    le16_to_cpu(rp->manufacturer));
2449

2450
	/* Detect a wide host of Chinese controllers that aren't CSR.
2451
	 *
2452
	 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2453
	 *
2454
	 * The main thing they have in common is that these are really popular low-cost
2455
	 * options that support newer Bluetooth versions but rely on heavy VID/PID
2456
	 * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2457
	 *
2458
	 * We detect actual CSR devices by checking that the HCI manufacturer code
2459
	 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2460
	 * HCI rev values always match. As they both store the firmware number.
2461
	 */
2462
	if (le16_to_cpu(rp->manufacturer) != 10 ||
2463
	    le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2464
		is_fake = true;
2465

2466
	/* Known legit CSR firmware build numbers and their supported BT versions:
2467
	 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2468
	 * - 1.2 (0x2) ->                 0x04d9, 0x0529
2469
	 * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2470
	 * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2471
	 * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2472
	 *
2473
	 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2474
	 *      support BT 1.1 only; so it's a dead giveaway when some
2475
	 *      third-party BT 4.0 dongle reuses it.
2476
	 */
2477
	else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2478
		 rp->hci_ver > BLUETOOTH_VER_1_1)
2479
		is_fake = true;
2480

2481
	else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2482
		 rp->hci_ver > BLUETOOTH_VER_1_2)
2483
		is_fake = true;
2484

2485
	else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2486
		 rp->hci_ver > BLUETOOTH_VER_2_0)
2487
		is_fake = true;
2488

2489
	else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2490
		 rp->hci_ver > BLUETOOTH_VER_2_1)
2491
		is_fake = true;
2492

2493
	else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2494
		 rp->hci_ver > BLUETOOTH_VER_4_0)
2495
		is_fake = true;
2496

2497
	/* Other clones which beat all the above checks */
2498
	else if (bcdDevice == 0x0134 &&
2499
		 le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2500
		 rp->hci_ver == BLUETOOTH_VER_2_0)
2501
		is_fake = true;
2502

2503
	if (is_fake) {
2504
		bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2505

2506
		/* Generally these clones have big discrepancies between
2507
		 * advertised features and what's actually supported.
2508
		 * Probably will need to be expanded in the future;
2509
		 * without these the controller will lock up.
2510
		 */
2511
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_STORED_LINK_KEY);
2512
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_ERR_DATA_REPORTING);
2513
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL);
2514
		hci_set_quirk(hdev, HCI_QUIRK_NO_SUSPEND_NOTIFIER);
2515
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_VOICE_SETTING);
2516
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_PAGE_SCAN_TYPE);
2517

2518
		/* Clear the reset quirk since this is not an actual
2519
		 * early Bluetooth 1.1 device from CSR.
2520
		 */
2521
		hci_clear_quirk(hdev, HCI_QUIRK_RESET_ON_CLOSE);
2522
		hci_clear_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
2523

2524
		/*
2525
		 * Special workaround for these BT 4.0 chip clones, and potentially more:
2526
		 *
2527
		 * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2528
		 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2529
		 *
2530
		 * These controllers are really messed-up.
2531
		 *
2532
		 * 1. Their bulk RX endpoint will never report any data unless
2533
		 *    the device was suspended at least once (yes, really).
2534
		 * 2. They will not wakeup when autosuspended and receiving data
2535
		 *    on their bulk RX endpoint from e.g. a keyboard or mouse
2536
		 *    (IOW remote-wakeup support is broken for the bulk endpoint).
2537
		 *
2538
		 * To fix 1. enable runtime-suspend, force-suspend the
2539
		 * HCI and then wake-it up by disabling runtime-suspend.
2540
		 *
2541
		 * To fix 2. clear the HCI's can_wake flag, this way the HCI
2542
		 * will still be autosuspended when it is not open.
2543
		 *
2544
		 * --
2545
		 *
2546
		 * Because these are widespread problems we prefer generic solutions; so
2547
		 * apply this initialization quirk to every controller that gets here,
2548
		 * it should be harmless. The alternative is to not work at all.
2549
		 */
2550
		pm_runtime_allow(&data->udev->dev);
2551

2552
		ret = pm_runtime_suspend(&data->udev->dev);
2553
		if (ret >= 0)
2554
			msleep(200);
2555
		else
2556
			bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2557

2558
		pm_runtime_forbid(&data->udev->dev);
2559

2560
		device_set_wakeup_capable(&data->udev->dev, false);
2561

2562
		/* Re-enable autosuspend if this was requested */
2563
		if (enable_autosuspend)
2564
			usb_enable_autosuspend(data->udev);
2565
	}
2566

2567
	kfree_skb(skb);
2568

2569
	return 0;
2570
}
2571

2572
static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2573
{
2574
	struct sk_buff *skb;
2575
	struct hci_event_hdr *hdr;
2576
	struct hci_ev_cmd_complete *evt;
2577

2578
	skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2579
	if (!skb)
2580
		return -ENOMEM;
2581

2582
	hdr = skb_put(skb, sizeof(*hdr));
2583
	hdr->evt = HCI_EV_CMD_COMPLETE;
2584
	hdr->plen = sizeof(*evt) + 1;
2585

2586
	evt = skb_put(skb, sizeof(*evt));
2587
	evt->ncmd = 0x01;
2588
	evt->opcode = cpu_to_le16(opcode);
2589

2590
	skb_put_u8(skb, 0x00);
2591

2592
	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2593

2594
	return hci_recv_frame(hdev, skb);
2595
}
2596

2597
static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2598
				 int count)
2599
{
2600
	struct hci_dev *hdev = data->hdev;
2601

2602
	/* When the device is in bootloader mode, then it can send
2603
	 * events via the bulk endpoint. These events are treated the
2604
	 * same way as the ones received from the interrupt endpoint.
2605
	 */
2606
	if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2607
		return btusb_recv_intr(data, buffer, count);
2608

2609
	return btusb_recv_bulk(data, buffer, count);
2610
}
2611

2612
static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2613
{
2614
	struct urb *urb;
2615

2616
	BT_DBG("%s", hdev->name);
2617

2618
	switch (hci_skb_pkt_type(skb)) {
2619
	case HCI_COMMAND_PKT:
2620
		if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2621
			struct hci_command_hdr *cmd = (void *)skb->data;
2622
			__u16 opcode = le16_to_cpu(cmd->opcode);
2623

2624
			/* When in bootloader mode and the command 0xfc09
2625
			 * is received, it needs to be send down the
2626
			 * bulk endpoint. So allocate a bulk URB instead.
2627
			 */
2628
			if (opcode == 0xfc09)
2629
				urb = alloc_bulk_urb(hdev, skb);
2630
			else
2631
				urb = alloc_ctrl_urb(hdev, skb);
2632

2633
			/* When the BTINTEL_HCI_OP_RESET command is issued to
2634
			 * boot into the operational firmware, it will actually
2635
			 * not send a command complete event. To keep the flow
2636
			 * control working inject that event here.
2637
			 */
2638
			if (opcode == BTINTEL_HCI_OP_RESET)
2639
				inject_cmd_complete(hdev, opcode);
2640
		} else {
2641
			urb = alloc_ctrl_urb(hdev, skb);
2642
		}
2643
		if (IS_ERR(urb))
2644
			return PTR_ERR(urb);
2645

2646
		hdev->stat.cmd_tx++;
2647
		return submit_or_queue_tx_urb(hdev, urb);
2648

2649
	case HCI_ACLDATA_PKT:
2650
		urb = alloc_bulk_urb(hdev, skb);
2651
		if (IS_ERR(urb))
2652
			return PTR_ERR(urb);
2653

2654
		hdev->stat.acl_tx++;
2655
		return submit_or_queue_tx_urb(hdev, urb);
2656

2657
	case HCI_SCODATA_PKT:
2658
		if (!hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
2659
		    hci_conn_num(hdev, SCO_LINK) < 1)
2660
			return -ENODEV;
2661

2662
		urb = alloc_isoc_urb(hdev, skb);
2663
		if (IS_ERR(urb))
2664
			return PTR_ERR(urb);
2665

2666
		hdev->stat.sco_tx++;
2667
		return submit_tx_urb(hdev, urb);
2668

2669
	case HCI_ISODATA_PKT:
2670
		urb = alloc_bulk_urb(hdev, skb);
2671
		if (IS_ERR(urb))
2672
			return PTR_ERR(urb);
2673

2674
		return submit_or_queue_tx_urb(hdev, urb);
2675
	}
2676

2677
	return -EILSEQ;
2678
}
2679

2680
static int btusb_setup_realtek(struct hci_dev *hdev)
2681
{
2682
	struct btusb_data *data = hci_get_drvdata(hdev);
2683
	int ret;
2684

2685
	ret = btrtl_setup_realtek(hdev);
2686

2687
	if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP))
2688
		set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags);
2689

2690
	return ret;
2691
}
2692

2693
static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
2694
{
2695
	if (skb->data[0] == HCI_VENDOR_PKT && skb->data[2] == RTK_SUB_EVENT_CODE_COREDUMP) {
2696
		struct rtk_dev_coredump_hdr hdr = {
2697
			.code = RTK_DEVCOREDUMP_CODE_MEMDUMP,
2698
		};
2699

2700
		bt_dev_dbg(hdev, "RTL: received coredump vendor evt, len %u",
2701
			skb->len);
2702

2703
		btusb_rtl_alloc_devcoredump(hdev, &hdr, skb->data, skb->len);
2704
		kfree_skb(skb);
2705

2706
		return 0;
2707
	}
2708

2709
	return hci_recv_frame(hdev, skb);
2710
}
2711

2712
static void btusb_mtk_claim_iso_intf(struct btusb_data *data)
2713
{
2714
	struct btmtk_data *btmtk_data = hci_get_priv(data->hdev);
2715
	int err;
2716

2717
	/*
2718
	 * The function usb_driver_claim_interface() is documented to need
2719
	 * locks held if it's not called from a probe routine. The code here
2720
	 * is called from the hci_power_on workqueue, so grab the lock.
2721
	 */
2722
	device_lock(&btmtk_data->isopkt_intf->dev);
2723
	err = usb_driver_claim_interface(&btusb_driver,
2724
					 btmtk_data->isopkt_intf, data);
2725
	device_unlock(&btmtk_data->isopkt_intf->dev);
2726
	if (err < 0) {
2727
		btmtk_data->isopkt_intf = NULL;
2728
		bt_dev_err(data->hdev, "Failed to claim iso interface: %d", err);
2729
		return;
2730
	}
2731

2732
	set_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags);
2733
	init_usb_anchor(&btmtk_data->isopkt_anchor);
2734
}
2735

2736
static void btusb_mtk_release_iso_intf(struct hci_dev *hdev)
2737
{
2738
	struct btmtk_data *btmtk_data = hci_get_priv(hdev);
2739

2740
	if (test_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags)) {
2741
		usb_kill_anchored_urbs(&btmtk_data->isopkt_anchor);
2742
		clear_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags);
2743

2744
		dev_kfree_skb_irq(btmtk_data->isopkt_skb);
2745
		btmtk_data->isopkt_skb = NULL;
2746
		usb_set_intfdata(btmtk_data->isopkt_intf, NULL);
2747
		usb_driver_release_interface(&btusb_driver,
2748
					     btmtk_data->isopkt_intf);
2749
	}
2750

2751
	clear_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags);
2752
}
2753

2754
static int btusb_mtk_disconnect(struct hci_dev *hdev)
2755
{
2756
	/* This function describes the specific additional steps taken by MediaTek
2757
	 * when Bluetooth usb driver's resume function is called.
2758
	 */
2759
	btusb_mtk_release_iso_intf(hdev);
2760

2761
	return 0;
2762
}
2763

2764
static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
2765
{
2766
	struct btusb_data *data = hci_get_drvdata(hdev);
2767
	struct btmtk_data *btmtk_data = hci_get_priv(hdev);
2768
	int err;
2769

2770
	/* It's MediaTek specific bluetooth reset mechanism via USB */
2771
	if (test_and_set_bit(BTMTK_HW_RESET_ACTIVE, &btmtk_data->flags)) {
2772
		bt_dev_err(hdev, "last reset failed? Not resetting again");
2773
		return -EBUSY;
2774
	}
2775

2776
	err = usb_autopm_get_interface(data->intf);
2777
	if (err < 0)
2778
		return err;
2779

2780
	/* Release MediaTek ISO data interface */
2781
	btusb_mtk_release_iso_intf(hdev);
2782

2783
	btusb_stop_traffic(data);
2784
	usb_kill_anchored_urbs(&data->tx_anchor);
2785

2786
	err = btmtk_usb_subsys_reset(hdev, btmtk_data->dev_id);
2787

2788
	usb_queue_reset_device(data->intf);
2789
	clear_bit(BTMTK_HW_RESET_ACTIVE, &btmtk_data->flags);
2790

2791
	return err;
2792
}
2793

2794
static int btusb_send_frame_mtk(struct hci_dev *hdev, struct sk_buff *skb)
2795
{
2796
	struct urb *urb;
2797

2798
	BT_DBG("%s", hdev->name);
2799

2800
	if (hci_skb_pkt_type(skb) == HCI_ISODATA_PKT) {
2801
		urb = alloc_mtk_intr_urb(hdev, skb, btusb_tx_complete);
2802
		if (IS_ERR(urb))
2803
			return PTR_ERR(urb);
2804

2805
		return submit_or_queue_tx_urb(hdev, urb);
2806
	} else {
2807
		return btusb_send_frame(hdev, skb);
2808
	}
2809
}
2810

2811
static int btusb_mtk_setup(struct hci_dev *hdev)
2812
{
2813
	struct btusb_data *data = hci_get_drvdata(hdev);
2814
	struct btmtk_data *btmtk_data = hci_get_priv(hdev);
2815

2816
	/* MediaTek WMT vendor cmd requiring below USB resources to
2817
	 * complete the handshake.
2818
	 */
2819
	btmtk_data->drv_name = btusb_driver.name;
2820
	btmtk_data->intf = data->intf;
2821
	btmtk_data->udev = data->udev;
2822
	btmtk_data->ctrl_anchor = &data->ctrl_anchor;
2823
	btmtk_data->reset_sync = btusb_mtk_reset;
2824

2825
	/* Claim ISO data interface and endpoint */
2826
	if (!test_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags)) {
2827
		btmtk_data->isopkt_intf = usb_ifnum_to_if(data->udev, MTK_ISO_IFNUM);
2828
		btusb_mtk_claim_iso_intf(data);
2829
	}
2830

2831
	return btmtk_usb_setup(hdev);
2832
}
2833

2834
static int btusb_mtk_shutdown(struct hci_dev *hdev)
2835
{
2836
	int ret;
2837

2838
	ret = btmtk_usb_shutdown(hdev);
2839

2840
	/* Release MediaTek iso interface after shutdown */
2841
	btusb_mtk_release_iso_intf(hdev);
2842

2843
	return ret;
2844
}
2845

2846
#ifdef CONFIG_PM
2847
/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2848
static int marvell_config_oob_wake(struct hci_dev *hdev)
2849
{
2850
	struct sk_buff *skb;
2851
	struct btusb_data *data = hci_get_drvdata(hdev);
2852
	struct device *dev = &data->udev->dev;
2853
	u16 pin, gap, opcode;
2854
	int ret;
2855
	u8 cmd[5];
2856

2857
	/* Move on if no wakeup pin specified */
2858
	if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2859
	    of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2860
		return 0;
2861

2862
	/* Vendor specific command to configure a GPIO as wake-up pin */
2863
	opcode = hci_opcode_pack(0x3F, 0x59);
2864
	cmd[0] = opcode & 0xFF;
2865
	cmd[1] = opcode >> 8;
2866
	cmd[2] = 2; /* length of parameters that follow */
2867
	cmd[3] = pin;
2868
	cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2869

2870
	skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2871
	if (!skb) {
2872
		bt_dev_err(hdev, "%s: No memory", __func__);
2873
		return -ENOMEM;
2874
	}
2875

2876
	skb_put_data(skb, cmd, sizeof(cmd));
2877
	hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2878

2879
	ret = btusb_send_frame(hdev, skb);
2880
	if (ret) {
2881
		bt_dev_err(hdev, "%s: configuration failed", __func__);
2882
		kfree_skb(skb);
2883
		return ret;
2884
	}
2885

2886
	return 0;
2887
}
2888
#endif
2889

2890
static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2891
				    const bdaddr_t *bdaddr)
2892
{
2893
	struct sk_buff *skb;
2894
	u8 buf[8];
2895
	long ret;
2896

2897
	buf[0] = 0xfe;
2898
	buf[1] = sizeof(bdaddr_t);
2899
	memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2900

2901
	skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2902
	if (IS_ERR(skb)) {
2903
		ret = PTR_ERR(skb);
2904
		bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2905
			   ret);
2906
		return ret;
2907
	}
2908
	kfree_skb(skb);
2909

2910
	return 0;
2911
}
2912

2913
static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2914
				    const bdaddr_t *bdaddr)
2915
{
2916
	struct sk_buff *skb;
2917
	u8 buf[10];
2918
	long ret;
2919

2920
	buf[0] = 0x01;
2921
	buf[1] = 0x01;
2922
	buf[2] = 0x00;
2923
	buf[3] = sizeof(bdaddr_t);
2924
	memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2925

2926
	skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2927
	if (IS_ERR(skb)) {
2928
		ret = PTR_ERR(skb);
2929
		bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2930
		return ret;
2931
	}
2932
	kfree_skb(skb);
2933

2934
	return 0;
2935
}
2936

2937
static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
2938
				const bdaddr_t *bdaddr)
2939
{
2940
	struct sk_buff *skb;
2941
	u8 buf[6];
2942
	long ret;
2943

2944
	memcpy(buf, bdaddr, sizeof(bdaddr_t));
2945

2946
	skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
2947
				HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
2948
	if (IS_ERR(skb)) {
2949
		ret = PTR_ERR(skb);
2950
		bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2951
		return ret;
2952
	}
2953
	kfree_skb(skb);
2954

2955
	return 0;
2956
}
2957

2958
#define QCA_MEMDUMP_ACL_HANDLE 0x2EDD
2959
#define QCA_MEMDUMP_SIZE_MAX  0x100000
2960
#define QCA_MEMDUMP_VSE_CLASS 0x01
2961
#define QCA_MEMDUMP_MSG_TYPE 0x08
2962
#define QCA_MEMDUMP_PKT_SIZE 248
2963
#define QCA_LAST_SEQUENCE_NUM 0xffff
2964

2965
struct qca_dump_hdr {
2966
	u8 vse_class;
2967
	u8 msg_type;
2968
	__le16 seqno;
2969
	u8 reserved;
2970
	union {
2971
		u8 data[0];
2972
		struct {
2973
			__le32 ram_dump_size;
2974
			u8 data0[0];
2975
		} __packed;
2976
	};
2977
} __packed;
2978

2979

2980
static void btusb_dump_hdr_qca(struct hci_dev *hdev, struct sk_buff *skb)
2981
{
2982
	char buf[128];
2983
	struct btusb_data *btdata = hci_get_drvdata(hdev);
2984

2985
	snprintf(buf, sizeof(buf), "Controller Name: 0x%x\n",
2986
			btdata->qca_dump.controller_id);
2987
	skb_put_data(skb, buf, strlen(buf));
2988

2989
	snprintf(buf, sizeof(buf), "Firmware Version: 0x%x\n",
2990
			btdata->qca_dump.fw_version);
2991
	skb_put_data(skb, buf, strlen(buf));
2992

2993
	snprintf(buf, sizeof(buf), "Driver: %s\nVendor: qca\n",
2994
			btusb_driver.name);
2995
	skb_put_data(skb, buf, strlen(buf));
2996

2997
	snprintf(buf, sizeof(buf), "VID: 0x%x\nPID:0x%x\n",
2998
			btdata->qca_dump.id_vendor, btdata->qca_dump.id_product);
2999
	skb_put_data(skb, buf, strlen(buf));
3000

3001
	snprintf(buf, sizeof(buf), "Lmp Subversion: 0x%x\n",
3002
			hdev->lmp_subver);
3003
	skb_put_data(skb, buf, strlen(buf));
3004
}
3005

3006
static void btusb_coredump_qca(struct hci_dev *hdev)
3007
{
3008
	int err;
3009
	static const u8 param[] = { 0x26 };
3010

3011
	err = __hci_cmd_send(hdev, 0xfc0c, 1, param);
3012
	if (err < 0)
3013
		bt_dev_err(hdev, "%s: triggle crash failed (%d)", __func__, err);
3014
}
3015

3016
/* Return: 0 on success, negative errno on failure. */
3017
static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3018
{
3019
	int ret = 0;
3020
	unsigned int skip = 0;
3021
	u8 pkt_type;
3022
	u16 seqno;
3023
	u32 dump_size;
3024

3025
	struct qca_dump_hdr *dump_hdr;
3026
	struct btusb_data *btdata = hci_get_drvdata(hdev);
3027
	struct usb_device *udev = btdata->udev;
3028

3029
	pkt_type = hci_skb_pkt_type(skb);
3030
	skip = sizeof(struct hci_event_hdr);
3031
	if (pkt_type == HCI_ACLDATA_PKT)
3032
		skip += sizeof(struct hci_acl_hdr);
3033

3034
	skb_pull(skb, skip);
3035
	dump_hdr = (struct qca_dump_hdr *)skb->data;
3036

3037
	seqno = le16_to_cpu(dump_hdr->seqno);
3038
	if (seqno == 0) {
3039
		set_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3040
		dump_size = le32_to_cpu(dump_hdr->ram_dump_size);
3041
		if (!dump_size || (dump_size > QCA_MEMDUMP_SIZE_MAX)) {
3042
			ret = -EILSEQ;
3043
			bt_dev_err(hdev, "Invalid memdump size(%u)",
3044
				   dump_size);
3045
			goto out;
3046
		}
3047

3048
		ret = hci_devcd_init(hdev, dump_size);
3049
		if (ret < 0) {
3050
			bt_dev_err(hdev, "memdump init error(%d)", ret);
3051
			goto out;
3052
		}
3053

3054
		btdata->qca_dump.ram_dump_size = dump_size;
3055
		btdata->qca_dump.ram_dump_seqno = 0;
3056

3057
		skb_pull(skb, offsetof(struct qca_dump_hdr, data0));
3058

3059
		usb_disable_autosuspend(udev);
3060
		bt_dev_info(hdev, "%s memdump size(%u)\n",
3061
			    (pkt_type == HCI_ACLDATA_PKT) ? "ACL" : "event",
3062
			    dump_size);
3063
	} else {
3064
		skb_pull(skb, offsetof(struct qca_dump_hdr, data));
3065
	}
3066

3067
	if (!btdata->qca_dump.ram_dump_size) {
3068
		ret = -EINVAL;
3069
		bt_dev_err(hdev, "memdump is not active");
3070
		goto out;
3071
	}
3072

3073
	if ((seqno > btdata->qca_dump.ram_dump_seqno + 1) && (seqno != QCA_LAST_SEQUENCE_NUM)) {
3074
		dump_size = QCA_MEMDUMP_PKT_SIZE * (seqno - btdata->qca_dump.ram_dump_seqno - 1);
3075
		hci_devcd_append_pattern(hdev, 0x0, dump_size);
3076
		bt_dev_err(hdev,
3077
			   "expected memdump seqno(%u) is not received(%u)\n",
3078
			   btdata->qca_dump.ram_dump_seqno, seqno);
3079
		btdata->qca_dump.ram_dump_seqno = seqno;
3080
		kfree_skb(skb);
3081
		return ret;
3082
	}
3083

3084
	hci_devcd_append(hdev, skb);
3085
	btdata->qca_dump.ram_dump_seqno++;
3086
	if (seqno == QCA_LAST_SEQUENCE_NUM) {
3087
		bt_dev_info(hdev,
3088
				"memdump done: pkts(%u), total(%u)\n",
3089
				btdata->qca_dump.ram_dump_seqno, btdata->qca_dump.ram_dump_size);
3090

3091
		hci_devcd_complete(hdev);
3092
		goto out;
3093
	}
3094
	return ret;
3095

3096
out:
3097
	if (btdata->qca_dump.ram_dump_size)
3098
		usb_enable_autosuspend(udev);
3099
	btdata->qca_dump.ram_dump_size = 0;
3100
	btdata->qca_dump.ram_dump_seqno = 0;
3101
	clear_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags);
3102

3103
	if (ret < 0)
3104
		kfree_skb(skb);
3105
	return ret;
3106
}
3107

3108
/* Return: true if the ACL packet is a dump packet, false otherwise. */
3109
static bool acl_pkt_is_dump_qca(struct hci_dev *hdev, struct sk_buff *skb)
3110
{
3111
	struct hci_event_hdr *event_hdr;
3112
	struct hci_acl_hdr *acl_hdr;
3113
	struct qca_dump_hdr *dump_hdr;
3114
	struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
3115
	bool is_dump = false;
3116

3117
	if (!clone)
3118
		return false;
3119

3120
	acl_hdr = skb_pull_data(clone, sizeof(*acl_hdr));
3121
	if (!acl_hdr || (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE))
3122
		goto out;
3123

3124
	event_hdr = skb_pull_data(clone, sizeof(*event_hdr));
3125
	if (!event_hdr || (event_hdr->evt != HCI_VENDOR_PKT))
3126
		goto out;
3127

3128
	dump_hdr = skb_pull_data(clone, sizeof(*dump_hdr));
3129
	if (!dump_hdr || (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS) ||
3130
	   (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
3131
		goto out;
3132

3133
	is_dump = true;
3134
out:
3135
	consume_skb(clone);
3136
	return is_dump;
3137
}
3138

3139
/* Return: true if the event packet is a dump packet, false otherwise. */
3140
static bool evt_pkt_is_dump_qca(struct hci_dev *hdev, struct sk_buff *skb)
3141
{
3142
	struct hci_event_hdr *event_hdr;
3143
	struct qca_dump_hdr *dump_hdr;
3144
	struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
3145
	bool is_dump = false;
3146

3147
	if (!clone)
3148
		return false;
3149

3150
	event_hdr = skb_pull_data(clone, sizeof(*event_hdr));
3151
	if (!event_hdr || (event_hdr->evt != HCI_VENDOR_PKT))
3152
		goto out;
3153

3154
	dump_hdr = skb_pull_data(clone, sizeof(*dump_hdr));
3155
	if (!dump_hdr || (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS) ||
3156
	   (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE))
3157
		goto out;
3158

3159
	is_dump = true;
3160
out:
3161
	consume_skb(clone);
3162
	return is_dump;
3163
}
3164

3165
static int btusb_recv_acl_qca(struct hci_dev *hdev, struct sk_buff *skb)
3166
{
3167
	if (acl_pkt_is_dump_qca(hdev, skb))
3168
		return handle_dump_pkt_qca(hdev, skb);
3169
	return hci_recv_frame(hdev, skb);
3170
}
3171

3172
static int btusb_recv_evt_qca(struct hci_dev *hdev, struct sk_buff *skb)
3173
{
3174
	if (evt_pkt_is_dump_qca(hdev, skb))
3175
		return handle_dump_pkt_qca(hdev, skb);
3176
	return hci_recv_frame(hdev, skb);
3177
}
3178

3179

3180
#define QCA_DFU_PACKET_LEN	4096
3181

3182
#define QCA_GET_TARGET_VERSION	0x09
3183
#define QCA_CHECK_STATUS	0x05
3184
#define QCA_DFU_DOWNLOAD	0x01
3185

3186
#define QCA_SYSCFG_UPDATED	0x40
3187
#define QCA_PATCH_UPDATED	0x80
3188
#define QCA_DFU_TIMEOUT		3000
3189
#define QCA_FLAG_MULTI_NVM      0x80
3190
#define QCA_BT_RESET_WAIT_MS    100
3191

3192
#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3193
#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3194

3195
struct qca_version {
3196
	__le32	rom_version;
3197
	__le32	patch_version;
3198
	__le32	ram_version;
3199
	__u8	chip_id;
3200
	__u8	platform_id;
3201
	__le16	flag;
3202
	__u8	reserved[4];
3203
} __packed;
3204

3205
struct qca_rampatch_version {
3206
	__le16	rom_version_high;
3207
	__le16  rom_version_low;
3208
	__le16	patch_version;
3209
} __packed;
3210

3211
struct qca_device_info {
3212
	u32	rom_version;
3213
	u8	rampatch_hdr;	/* length of header in rampatch */
3214
	u8	nvm_hdr;	/* length of header in NVM */
3215
	u8	ver_offset;	/* offset of version structure in rampatch */
3216
};
3217

3218
struct qca_custom_firmware {
3219
	u32 rom_version;
3220
	u16 board_id;
3221
	const char *subdirectory;
3222
};
3223

3224
static const struct qca_device_info qca_devices_table[] = {
3225
	{ 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3226
	{ 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3227
	{ 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3228
	{ 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3229
	{ 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3230
	{ 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3231
	{ 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3232
	{ 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3233
	{ 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3234
	{ 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3235
};
3236

3237
static const struct qca_custom_firmware qca_custom_btfws[] = {
3238
	{ 0x00130201, 0x030A, "QCA2066" },
3239
	{ },
3240
};
3241

3242
static u16 qca_extract_board_id(const struct qca_version *ver)
3243
{
3244
	u16 flag = le16_to_cpu(ver->flag);
3245
	u16 board_id = 0;
3246

3247
	if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3248
		/* The board_id should be split into two bytes
3249
		 * The 1st byte is chip ID, and the 2nd byte is platform ID
3250
		 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3251
		 * we have several platforms, and platform IDs are continuously added
3252
		 * Platform ID:
3253
		 * 0x00 is for Mobile
3254
		 * 0x01 is for X86
3255
		 * 0x02 is for Automotive
3256
		 * 0x03 is for Consumer electronic
3257
		 */
3258
		board_id = (ver->chip_id << 8) + ver->platform_id;
3259
	}
3260

3261
	/* Take 0xffff as invalid board ID */
3262
	if (board_id == 0xffff)
3263
		board_id = 0;
3264

3265
	return board_id;
3266
}
3267

3268
static const char *qca_get_fw_subdirectory(const struct qca_version *ver)
3269
{
3270
	const struct qca_custom_firmware *ptr;
3271
	u32 rom_ver;
3272
	u16 board_id;
3273

3274
	rom_ver = le32_to_cpu(ver->rom_version);
3275
	board_id = qca_extract_board_id(ver);
3276
	if (!board_id)
3277
		return NULL;
3278

3279
	for (ptr = qca_custom_btfws; ptr->rom_version; ptr++) {
3280
		if (ptr->rom_version == rom_ver &&
3281
		    ptr->board_id == board_id)
3282
			return ptr->subdirectory;
3283
	}
3284

3285
	return NULL;
3286
}
3287

3288
static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3289
				     void *data, u16 size)
3290
{
3291
	int pipe, err;
3292
	u8 *buf;
3293

3294
	buf = kmalloc(size, GFP_KERNEL);
3295
	if (!buf)
3296
		return -ENOMEM;
3297

3298
	/* Found some of USB hosts have IOT issues with ours so that we should
3299
	 * not wait until HCI layer is ready.
3300
	 */
3301
	pipe = usb_rcvctrlpipe(udev, 0);
3302
	err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3303
			      0, 0, buf, size, USB_CTRL_GET_TIMEOUT);
3304
	if (err < 0) {
3305
		dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3306
		goto done;
3307
	}
3308

3309
	memcpy(data, buf, size);
3310

3311
done:
3312
	kfree(buf);
3313

3314
	return err;
3315
}
3316

3317
static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3318
				       const struct firmware *firmware,
3319
				       size_t hdr_size)
3320
{
3321
	struct btusb_data *btdata = hci_get_drvdata(hdev);
3322
	struct usb_device *udev = btdata->udev;
3323
	size_t count, size, sent = 0;
3324
	int pipe, len, err;
3325
	u8 *buf;
3326

3327
	buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3328
	if (!buf)
3329
		return -ENOMEM;
3330

3331
	count = firmware->size;
3332

3333
	size = min_t(size_t, count, hdr_size);
3334
	memcpy(buf, firmware->data, size);
3335

3336
	/* USB patches should go down to controller through USB path
3337
	 * because binary format fits to go down through USB channel.
3338
	 * USB control path is for patching headers and USB bulk is for
3339
	 * patch body.
3340
	 */
3341
	pipe = usb_sndctrlpipe(udev, 0);
3342
	err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3343
			      0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3344
	if (err < 0) {
3345
		bt_dev_err(hdev, "Failed to send headers (%d)", err);
3346
		goto done;
3347
	}
3348

3349
	sent += size;
3350
	count -= size;
3351

3352
	/* ep2 need time to switch from function acl to function dfu,
3353
	 * so we add 20ms delay here.
3354
	 */
3355
	msleep(20);
3356

3357
	while (count) {
3358
		size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3359

3360
		memcpy(buf, firmware->data + sent, size);
3361

3362
		pipe = usb_sndbulkpipe(udev, 0x02);
3363
		err = usb_bulk_msg(udev, pipe, buf, size, &len,
3364
				   QCA_DFU_TIMEOUT);
3365
		if (err < 0) {
3366
			bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3367
				   sent, firmware->size, err);
3368
			break;
3369
		}
3370

3371
		if (size != len) {
3372
			bt_dev_err(hdev, "Failed to get bulk buffer");
3373
			err = -EILSEQ;
3374
			break;
3375
		}
3376

3377
		sent  += size;
3378
		count -= size;
3379
	}
3380

3381
done:
3382
	kfree(buf);
3383
	return err;
3384
}
3385

3386
static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3387
					 struct qca_version *ver,
3388
					 const struct qca_device_info *info)
3389
{
3390
	struct qca_rampatch_version *rver;
3391
	const struct firmware *fw;
3392
	const char *fw_subdir;
3393
	u32 ver_rom, ver_patch, rver_rom;
3394
	u16 rver_rom_low, rver_rom_high, rver_patch;
3395
	char fwname[80];
3396
	int err;
3397

3398
	ver_rom = le32_to_cpu(ver->rom_version);
3399
	ver_patch = le32_to_cpu(ver->patch_version);
3400

3401
	fw_subdir = qca_get_fw_subdirectory(ver);
3402
	if (fw_subdir)
3403
		snprintf(fwname, sizeof(fwname), "qca/%s/rampatch_usb_%08x.bin",
3404
			 fw_subdir, ver_rom);
3405
	else
3406
		snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin",
3407
			 ver_rom);
3408

3409
	err = request_firmware(&fw, fwname, &hdev->dev);
3410
	if (err) {
3411
		bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3412
			   fwname, err);
3413
		return err;
3414
	}
3415

3416
	bt_dev_info(hdev, "using rampatch file: %s", fwname);
3417

3418
	rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3419
	rver_rom_low = le16_to_cpu(rver->rom_version_low);
3420
	rver_patch = le16_to_cpu(rver->patch_version);
3421

3422
	if (ver_rom & ~0xffffU) {
3423
		rver_rom_high = le16_to_cpu(rver->rom_version_high);
3424
		rver_rom = rver_rom_high << 16 | rver_rom_low;
3425
	} else {
3426
		rver_rom = rver_rom_low;
3427
	}
3428

3429
	bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3430
		    "firmware rome 0x%x build 0x%x",
3431
		    rver_rom, rver_patch, ver_rom, ver_patch);
3432

3433
	if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3434
		bt_dev_err(hdev, "rampatch file version did not match with firmware");
3435
		err = -EINVAL;
3436
		goto done;
3437
	}
3438

3439
	err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3440

3441
done:
3442
	release_firmware(fw);
3443

3444
	return err;
3445
}
3446

3447
static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3448
					const struct qca_version *ver)
3449
{
3450
	u32 rom_version = le32_to_cpu(ver->rom_version);
3451
	const char *variant, *fw_subdir;
3452
	int len;
3453
	u16 board_id;
3454

3455
	fw_subdir = qca_get_fw_subdirectory(ver);
3456
	board_id = qca_extract_board_id(ver);
3457

3458
	switch (le32_to_cpu(ver->ram_version)) {
3459
	case WCN6855_2_0_RAM_VERSION_GF:
3460
	case WCN6855_2_1_RAM_VERSION_GF:
3461
		variant = "_gf";
3462
		break;
3463
	default:
3464
		variant = NULL;
3465
		break;
3466
	}
3467

3468
	if (fw_subdir)
3469
		len = snprintf(fwname, max_size, "qca/%s/nvm_usb_%08x",
3470
			       fw_subdir, rom_version);
3471
	else
3472
		len = snprintf(fwname, max_size, "qca/nvm_usb_%08x",
3473
			       rom_version);
3474
	if (variant)
3475
		len += snprintf(fwname + len, max_size - len, "%s", variant);
3476
	if (board_id)
3477
		len += snprintf(fwname + len, max_size - len, "_%04x", board_id);
3478
	len += snprintf(fwname + len, max_size - len, ".bin");
3479
}
3480

3481
static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3482
				    struct qca_version *ver,
3483
				    const struct qca_device_info *info)
3484
{
3485
	const struct firmware *fw;
3486
	char fwname[80];
3487
	int err;
3488

3489
	btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3490

3491
	err = request_firmware(&fw, fwname, &hdev->dev);
3492
	if (err) {
3493
		bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3494
			   fwname, err);
3495
		return err;
3496
	}
3497

3498
	bt_dev_info(hdev, "using NVM file: %s", fwname);
3499

3500
	err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3501

3502
	release_firmware(fw);
3503

3504
	return err;
3505
}
3506

3507
/* identify the ROM version and check whether patches are needed */
3508
static bool btusb_qca_need_patch(struct usb_device *udev)
3509
{
3510
	struct qca_version ver;
3511

3512
	if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3513
				      sizeof(ver)) < 0)
3514
		return false;
3515
	/* only low ROM versions need patches */
3516
	return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3517
}
3518

3519
static int btusb_setup_qca(struct hci_dev *hdev)
3520
{
3521
	struct btusb_data *btdata = hci_get_drvdata(hdev);
3522
	struct usb_device *udev = btdata->udev;
3523
	const struct qca_device_info *info = NULL;
3524
	struct qca_version ver;
3525
	u32 ver_rom;
3526
	u8 status;
3527
	int i, err;
3528

3529
	err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3530
					sizeof(ver));
3531
	if (err < 0)
3532
		return err;
3533

3534
	ver_rom = le32_to_cpu(ver.rom_version);
3535

3536
	for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3537
		if (ver_rom == qca_devices_table[i].rom_version)
3538
			info = &qca_devices_table[i];
3539
	}
3540
	if (!info) {
3541
		/* If the rom_version is not matched in the qca_devices_table
3542
		 * and the high ROM version is not zero, we assume this chip no
3543
		 * need to load the rampatch and nvm.
3544
		 */
3545
		if (ver_rom & ~0xffffU)
3546
			return 0;
3547

3548
		bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3549
		return -ENODEV;
3550
	}
3551

3552
	err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3553
					sizeof(status));
3554
	if (err < 0)
3555
		return err;
3556

3557
	if (!(status & QCA_PATCH_UPDATED)) {
3558
		err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3559
		if (err < 0)
3560
			return err;
3561
	}
3562

3563
	err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3564
					sizeof(ver));
3565
	if (err < 0)
3566
		return err;
3567

3568
	btdata->qca_dump.fw_version = le32_to_cpu(ver.patch_version);
3569
	btdata->qca_dump.controller_id = le32_to_cpu(ver.rom_version);
3570

3571
	if (!(status & QCA_SYSCFG_UPDATED)) {
3572
		err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3573
		if (err < 0)
3574
			return err;
3575

3576
		/* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3577
		 * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3578
		 * cause potential enable failure.
3579
		 */
3580
		if (info->rom_version >= 0x00130201)
3581
			msleep(QCA_BT_RESET_WAIT_MS);
3582
	}
3583

3584
	/* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3585
	 * work with the likes of HSP/HFP mSBC.
3586
	 */
3587
	hci_set_quirk(hdev, HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN);
3588

3589
	return 0;
3590
}
3591

3592
static inline int __set_diag_interface(struct hci_dev *hdev)
3593
{
3594
	struct btusb_data *data = hci_get_drvdata(hdev);
3595
	struct usb_interface *intf = data->diag;
3596
	int i;
3597

3598
	if (!data->diag)
3599
		return -ENODEV;
3600

3601
	data->diag_tx_ep = NULL;
3602
	data->diag_rx_ep = NULL;
3603

3604
	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3605
		struct usb_endpoint_descriptor *ep_desc;
3606

3607
		ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3608

3609
		if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3610
			data->diag_tx_ep = ep_desc;
3611
			continue;
3612
		}
3613

3614
		if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3615
			data->diag_rx_ep = ep_desc;
3616
			continue;
3617
		}
3618
	}
3619

3620
	if (!data->diag_tx_ep || !data->diag_rx_ep) {
3621
		bt_dev_err(hdev, "invalid diagnostic descriptors");
3622
		return -ENODEV;
3623
	}
3624

3625
	return 0;
3626
}
3627

3628
static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3629
{
3630
	struct btusb_data *data = hci_get_drvdata(hdev);
3631
	struct sk_buff *skb;
3632
	struct urb *urb;
3633
	unsigned int pipe;
3634

3635
	if (!data->diag_tx_ep)
3636
		return ERR_PTR(-ENODEV);
3637

3638
	urb = usb_alloc_urb(0, GFP_KERNEL);
3639
	if (!urb)
3640
		return ERR_PTR(-ENOMEM);
3641

3642
	skb = bt_skb_alloc(2, GFP_KERNEL);
3643
	if (!skb) {
3644
		usb_free_urb(urb);
3645
		return ERR_PTR(-ENOMEM);
3646
	}
3647

3648
	skb_put_u8(skb, 0xf0);
3649
	skb_put_u8(skb, enable);
3650

3651
	pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3652

3653
	usb_fill_bulk_urb(urb, data->udev, pipe,
3654
			  skb->data, skb->len, btusb_tx_complete, skb);
3655

3656
	skb->dev = (void *)hdev;
3657

3658
	return urb;
3659
}
3660

3661
static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3662
{
3663
	struct btusb_data *data = hci_get_drvdata(hdev);
3664
	struct urb *urb;
3665

3666
	if (!data->diag)
3667
		return -ENODEV;
3668

3669
	if (!test_bit(HCI_RUNNING, &hdev->flags))
3670
		return -ENETDOWN;
3671

3672
	urb = alloc_diag_urb(hdev, enable);
3673
	if (IS_ERR(urb))
3674
		return PTR_ERR(urb);
3675

3676
	return submit_or_queue_tx_urb(hdev, urb);
3677
}
3678

3679
#ifdef CONFIG_PM
3680
static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3681
{
3682
	struct btusb_data *data = priv;
3683

3684
	pm_wakeup_event(&data->udev->dev, 0);
3685
	pm_system_wakeup();
3686

3687
	/* Disable only if not already disabled (keep it balanced) */
3688
	if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3689
		disable_irq_nosync(irq);
3690
		disable_irq_wake(irq);
3691
	}
3692
	return IRQ_HANDLED;
3693
}
3694

3695
static const struct of_device_id btusb_match_table[] = {
3696
	{ .compatible = "usb1286,204e" },
3697
	{ .compatible = "usbcf3,e300" }, /* QCA6174A */
3698
	{ .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3699
	{ }
3700
};
3701
MODULE_DEVICE_TABLE(of, btusb_match_table);
3702

3703
/* Use an oob wakeup pin? */
3704
static int btusb_config_oob_wake(struct hci_dev *hdev)
3705
{
3706
	struct btusb_data *data = hci_get_drvdata(hdev);
3707
	struct device *dev = &data->udev->dev;
3708
	int irq, ret;
3709

3710
	clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3711

3712
	if (!of_match_device(btusb_match_table, dev))
3713
		return 0;
3714

3715
	/* Move on if no IRQ specified */
3716
	irq = of_irq_get_byname(dev->of_node, "wakeup");
3717
	if (irq <= 0) {
3718
		bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3719
		return 0;
3720
	}
3721

3722
	irq_set_status_flags(irq, IRQ_NOAUTOEN);
3723
	ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3724
			       0, "OOB Wake-on-BT", data);
3725
	if (ret) {
3726
		bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3727
		return ret;
3728
	}
3729

3730
	ret = device_init_wakeup(dev, true);
3731
	if (ret) {
3732
		bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3733
		return ret;
3734
	}
3735

3736
	data->oob_wake_irq = irq;
3737
	bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3738
	return 0;
3739
}
3740
#endif
3741

3742
static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3743
{
3744
	if (dmi_check_system(btusb_needs_reset_resume_table))
3745
		interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3746
}
3747

3748
static bool btusb_wakeup(struct hci_dev *hdev)
3749
{
3750
	struct btusb_data *data = hci_get_drvdata(hdev);
3751

3752
	return device_may_wakeup(&data->udev->dev);
3753
}
3754

3755
static int btusb_shutdown_qca(struct hci_dev *hdev)
3756
{
3757
	struct sk_buff *skb;
3758

3759
	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3760
	if (IS_ERR(skb)) {
3761
		bt_dev_err(hdev, "HCI reset during shutdown failed");
3762
		return PTR_ERR(skb);
3763
	}
3764
	kfree_skb(skb);
3765

3766
	return 0;
3767
}
3768

3769
static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3770
				    size_t count, loff_t *ppos)
3771
{
3772
	struct btusb_data *data = file->private_data;
3773
	char buf[3];
3774

3775
	buf[0] = data->poll_sync ? 'Y' : 'N';
3776
	buf[1] = '\n';
3777
	buf[2] = '\0';
3778
	return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3779
}
3780

3781
static ssize_t force_poll_sync_write(struct file *file,
3782
				     const char __user *user_buf,
3783
				     size_t count, loff_t *ppos)
3784
{
3785
	struct btusb_data *data = file->private_data;
3786
	bool enable;
3787
	int err;
3788

3789
	err = kstrtobool_from_user(user_buf, count, &enable);
3790
	if (err)
3791
		return err;
3792

3793
	/* Only allow changes while the adapter is down */
3794
	if (test_bit(HCI_UP, &data->hdev->flags))
3795
		return -EPERM;
3796

3797
	if (data->poll_sync == enable)
3798
		return -EALREADY;
3799

3800
	data->poll_sync = enable;
3801

3802
	return count;
3803
}
3804

3805
static const struct file_operations force_poll_sync_fops = {
3806
	.owner		= THIS_MODULE,
3807
	.open		= simple_open,
3808
	.read		= force_poll_sync_read,
3809
	.write		= force_poll_sync_write,
3810
	.llseek		= default_llseek,
3811
};
3812

3813
#define BTUSB_HCI_DRV_OP_SUPPORTED_ALTSETTINGS \
3814
		hci_opcode_pack(HCI_DRV_OGF_DRIVER_SPECIFIC, 0x0000)
3815
#define BTUSB_HCI_DRV_SUPPORTED_ALTSETTINGS_SIZE	0
3816
struct btusb_hci_drv_rp_supported_altsettings {
3817
	__u8	num;
3818
	__u8	altsettings[];
3819
} __packed;
3820

3821
#define BTUSB_HCI_DRV_OP_SWITCH_ALTSETTING \
3822
		hci_opcode_pack(HCI_DRV_OGF_DRIVER_SPECIFIC, 0x0001)
3823
#define BTUSB_HCI_DRV_SWITCH_ALTSETTING_SIZE		1
3824
struct btusb_hci_drv_cmd_switch_altsetting {
3825
	__u8	altsetting;
3826
} __packed;
3827

3828
static const struct {
3829
	u16 opcode;
3830
	const char *desc;
3831
} btusb_hci_drv_supported_commands[] = {
3832
	/* Common commands */
3833
	{ HCI_DRV_OP_READ_INFO, "Read Info" },
3834

3835
	/* Driver specific commands */
3836
	{ BTUSB_HCI_DRV_OP_SUPPORTED_ALTSETTINGS, "Supported Altsettings" },
3837
	{ BTUSB_HCI_DRV_OP_SWITCH_ALTSETTING,     "Switch Altsetting" },
3838
};
3839
static int btusb_hci_drv_read_info(struct hci_dev *hdev, void *data,
3840
				   u16 data_len)
3841
{
3842
	struct hci_drv_rp_read_info *rp;
3843
	size_t rp_size;
3844
	int err, i;
3845
	u16 opcode, num_supported_commands =
3846
		ARRAY_SIZE(btusb_hci_drv_supported_commands);
3847

3848
	rp_size = sizeof(*rp) + num_supported_commands * 2;
3849

3850
	rp = kmalloc(rp_size, GFP_KERNEL);
3851
	if (!rp)
3852
		return -ENOMEM;
3853

3854
	strscpy_pad(rp->driver_name, btusb_driver.name);
3855

3856
	rp->num_supported_commands = cpu_to_le16(num_supported_commands);
3857
	for (i = 0; i < num_supported_commands; i++) {
3858
		opcode = btusb_hci_drv_supported_commands[i].opcode;
3859
		bt_dev_info(hdev,
3860
			    "Supported HCI Drv command (0x%02x|0x%04x): %s",
3861
			    hci_opcode_ogf(opcode),
3862
			    hci_opcode_ocf(opcode),
3863
			    btusb_hci_drv_supported_commands[i].desc);
3864
		rp->supported_commands[i] = cpu_to_le16(opcode);
3865
	}
3866

3867
	err = hci_drv_cmd_complete(hdev, HCI_DRV_OP_READ_INFO,
3868
				   HCI_DRV_STATUS_SUCCESS, rp, rp_size);
3869

3870
	kfree(rp);
3871
	return err;
3872
}
3873

3874
static int btusb_hci_drv_supported_altsettings(struct hci_dev *hdev, void *data,
3875
					       u16 data_len)
3876
{
3877
	struct btusb_data *drvdata = hci_get_drvdata(hdev);
3878
	struct btusb_hci_drv_rp_supported_altsettings *rp;
3879
	size_t rp_size;
3880
	int err;
3881
	u8 i;
3882

3883
	/* There are at most 7 alt (0 - 6) */
3884
	rp = kmalloc(sizeof(*rp) + 7, GFP_KERNEL);
3885
	if (!rp)
3886
		return -ENOMEM;
3887

3888
	rp->num = 0;
3889
	if (!drvdata->isoc)
3890
		goto done;
3891

3892
	for (i = 0; i <= 6; i++) {
3893
		if (btusb_find_altsetting(drvdata, i))
3894
			rp->altsettings[rp->num++] = i;
3895
	}
3896

3897
done:
3898
	rp_size = sizeof(*rp) + rp->num;
3899

3900
	err = hci_drv_cmd_complete(hdev, BTUSB_HCI_DRV_OP_SUPPORTED_ALTSETTINGS,
3901
				   HCI_DRV_STATUS_SUCCESS, rp, rp_size);
3902
	kfree(rp);
3903
	return err;
3904
}
3905

3906
static int btusb_hci_drv_switch_altsetting(struct hci_dev *hdev, void *data,
3907
					   u16 data_len)
3908
{
3909
	struct btusb_hci_drv_cmd_switch_altsetting *cmd = data;
3910
	u8 status;
3911

3912
	if (cmd->altsetting > 6) {
3913
		status = HCI_DRV_STATUS_INVALID_PARAMETERS;
3914
	} else {
3915
		if (btusb_switch_alt_setting(hdev, cmd->altsetting))
3916
			status = HCI_DRV_STATUS_UNSPECIFIED_ERROR;
3917
		else
3918
			status = HCI_DRV_STATUS_SUCCESS;
3919
	}
3920

3921
	return hci_drv_cmd_status(hdev, BTUSB_HCI_DRV_OP_SWITCH_ALTSETTING,
3922
				  status);
3923
}
3924

3925
static const struct hci_drv_handler btusb_hci_drv_common_handlers[] = {
3926
	{ btusb_hci_drv_read_info,	HCI_DRV_READ_INFO_SIZE },
3927
};
3928

3929
static const struct hci_drv_handler btusb_hci_drv_specific_handlers[] = {
3930
	{ btusb_hci_drv_supported_altsettings,
3931
				BTUSB_HCI_DRV_SUPPORTED_ALTSETTINGS_SIZE },
3932
	{ btusb_hci_drv_switch_altsetting,
3933
				BTUSB_HCI_DRV_SWITCH_ALTSETTING_SIZE },
3934
};
3935

3936
static struct hci_drv btusb_hci_drv = {
3937
	.common_handler_count	= ARRAY_SIZE(btusb_hci_drv_common_handlers),
3938
	.common_handlers	= btusb_hci_drv_common_handlers,
3939
	.specific_handler_count	= ARRAY_SIZE(btusb_hci_drv_specific_handlers),
3940
	.specific_handlers	= btusb_hci_drv_specific_handlers,
3941
};
3942

3943
static int btusb_probe(struct usb_interface *intf,
3944
		       const struct usb_device_id *id)
3945
{
3946
	struct usb_endpoint_descriptor *ep_desc;
3947
	struct gpio_desc *reset_gpio;
3948
	struct btusb_data *data;
3949
	struct hci_dev *hdev;
3950
	unsigned ifnum_base;
3951
	int i, err, priv_size;
3952

3953
	BT_DBG("intf %p id %p", intf, id);
3954

3955
	if ((id->driver_info & BTUSB_IFNUM_2) &&
3956
	    (intf->cur_altsetting->desc.bInterfaceNumber != 0) &&
3957
	    (intf->cur_altsetting->desc.bInterfaceNumber != 2))
3958
		return -ENODEV;
3959

3960
	ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3961

3962
	if (!id->driver_info) {
3963
		const struct usb_device_id *match;
3964

3965
		match = usb_match_id(intf, quirks_table);
3966
		if (match)
3967
			id = match;
3968
	}
3969

3970
	if (id->driver_info == BTUSB_IGNORE)
3971
		return -ENODEV;
3972

3973
	if (id->driver_info & BTUSB_ATH3012) {
3974
		struct usb_device *udev = interface_to_usbdev(intf);
3975

3976
		/* Old firmware would otherwise let ath3k driver load
3977
		 * patch and sysconfig files
3978
		 */
3979
		if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3980
		    !btusb_qca_need_patch(udev))
3981
			return -ENODEV;
3982
	}
3983

3984
	data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3985
	if (!data)
3986
		return -ENOMEM;
3987

3988
	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3989
		ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3990

3991
		if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3992
			data->intr_ep = ep_desc;
3993
			continue;
3994
		}
3995

3996
		if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3997
			data->bulk_tx_ep = ep_desc;
3998
			continue;
3999
		}
4000

4001
		if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4002
			data->bulk_rx_ep = ep_desc;
4003
			continue;
4004
		}
4005
	}
4006

4007
	if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4008
		return -ENODEV;
4009

4010
	if (id->driver_info & BTUSB_AMP) {
4011
		data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4012
		data->cmdreq = 0x2b;
4013
	} else {
4014
		data->cmdreq_type = USB_TYPE_CLASS;
4015
		data->cmdreq = 0x00;
4016
	}
4017

4018
	data->udev = interface_to_usbdev(intf);
4019
	data->intf = intf;
4020

4021
	INIT_WORK(&data->work, btusb_work);
4022
	INIT_WORK(&data->waker, btusb_waker);
4023
	INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
4024

4025
	skb_queue_head_init(&data->acl_q);
4026

4027
	init_usb_anchor(&data->deferred);
4028
	init_usb_anchor(&data->tx_anchor);
4029
	spin_lock_init(&data->txlock);
4030

4031
	init_usb_anchor(&data->intr_anchor);
4032
	init_usb_anchor(&data->bulk_anchor);
4033
	init_usb_anchor(&data->isoc_anchor);
4034
	init_usb_anchor(&data->diag_anchor);
4035
	init_usb_anchor(&data->ctrl_anchor);
4036
	spin_lock_init(&data->rxlock);
4037

4038
	priv_size = 0;
4039

4040
	data->recv_event = hci_recv_frame;
4041
	data->recv_bulk = btusb_recv_bulk;
4042

4043
	if (id->driver_info & BTUSB_INTEL_COMBINED) {
4044
		/* Allocate extra space for Intel device */
4045
		priv_size += sizeof(struct btintel_data);
4046

4047
		/* Override the rx handlers */
4048
		data->recv_event = btintel_recv_event;
4049
		data->recv_bulk = btusb_recv_bulk_intel;
4050
	} else if (id->driver_info & BTUSB_REALTEK) {
4051
		/* Allocate extra space for Realtek device */
4052
		priv_size += sizeof(struct btrealtek_data);
4053

4054
		data->recv_event = btusb_recv_event_realtek;
4055
	} else if (id->driver_info & BTUSB_MEDIATEK) {
4056
		/* Allocate extra space for Mediatek device */
4057
		priv_size += sizeof(struct btmtk_data);
4058
	}
4059

4060
	data->recv_acl = hci_recv_frame;
4061

4062
	hdev = hci_alloc_dev_priv(priv_size);
4063
	if (!hdev)
4064
		return -ENOMEM;
4065

4066
	hdev->bus = HCI_USB;
4067
	hci_set_drvdata(hdev, data);
4068

4069
	data->hdev = hdev;
4070

4071
	SET_HCIDEV_DEV(hdev, &intf->dev);
4072

4073
	reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4074
					GPIOD_OUT_LOW);
4075
	if (IS_ERR(reset_gpio)) {
4076
		err = PTR_ERR(reset_gpio);
4077
		goto out_free_dev;
4078
	} else if (reset_gpio) {
4079
		data->reset_gpio = reset_gpio;
4080
	}
4081

4082
	hdev->open    = btusb_open;
4083
	hdev->close   = btusb_close;
4084
	hdev->flush   = btusb_flush;
4085
	hdev->send    = btusb_send_frame;
4086
	hdev->notify  = btusb_notify;
4087
	hdev->wakeup  = btusb_wakeup;
4088
	hdev->hci_drv = &btusb_hci_drv;
4089

4090
#ifdef CONFIG_PM
4091
	err = btusb_config_oob_wake(hdev);
4092
	if (err)
4093
		goto out_free_dev;
4094

4095
	/* Marvell devices may need a specific chip configuration */
4096
	if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4097
		err = marvell_config_oob_wake(hdev);
4098
		if (err)
4099
			goto out_free_dev;
4100
	}
4101
#endif
4102
	if (id->driver_info & BTUSB_CW6622)
4103
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_STORED_LINK_KEY);
4104

4105
	if (id->driver_info & BTUSB_BCM2045)
4106
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_STORED_LINK_KEY);
4107

4108
	if (id->driver_info & BTUSB_BCM92035)
4109
		hdev->setup = btusb_setup_bcm92035;
4110

4111
	if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4112
	    (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4113
		hdev->manufacturer = 15;
4114
		hdev->setup = btbcm_setup_patchram;
4115
		hdev->set_diag = btusb_bcm_set_diag;
4116
		hdev->set_bdaddr = btbcm_set_bdaddr;
4117

4118
		/* Broadcom LM_DIAG Interface numbers are hardcoded */
4119
		data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4120
	}
4121

4122
	if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4123
	    (id->driver_info & BTUSB_BCM_APPLE)) {
4124
		hdev->manufacturer = 15;
4125
		hdev->setup = btbcm_setup_apple;
4126
		hdev->set_diag = btusb_bcm_set_diag;
4127

4128
		/* Broadcom LM_DIAG Interface numbers are hardcoded */
4129
		data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4130
	}
4131

4132
	/* Combined Intel Device setup to support multiple setup routine */
4133
	if (id->driver_info & BTUSB_INTEL_COMBINED) {
4134
		err = btintel_configure_setup(hdev, btusb_driver.name);
4135
		if (err)
4136
			goto out_free_dev;
4137

4138
		/* Transport specific configuration */
4139
		hdev->send = btusb_send_frame_intel;
4140
		hdev->reset = btusb_intel_reset;
4141

4142
		if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
4143
			btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
4144

4145
		if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
4146
			btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
4147

4148
		if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
4149
			btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
4150
	}
4151

4152
	if (id->driver_info & BTUSB_MARVELL)
4153
		hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4154

4155
	if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4156
	    (id->driver_info & BTUSB_MEDIATEK)) {
4157
		hdev->setup = btusb_mtk_setup;
4158
		hdev->shutdown = btusb_mtk_shutdown;
4159
		hdev->manufacturer = 70;
4160
		hdev->reset = btmtk_reset_sync;
4161
		hdev->set_bdaddr = btmtk_set_bdaddr;
4162
		hdev->send = btusb_send_frame_mtk;
4163
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN);
4164
		hci_set_quirk(hdev, HCI_QUIRK_NON_PERSISTENT_SETUP);
4165
		data->recv_acl = btmtk_usb_recv_acl;
4166
		data->suspend = btmtk_usb_suspend;
4167
		data->resume = btmtk_usb_resume;
4168
		data->disconnect = btusb_mtk_disconnect;
4169
	}
4170

4171
	if (id->driver_info & BTUSB_SWAVE) {
4172
		hci_set_quirk(hdev, HCI_QUIRK_FIXUP_INQUIRY_MODE);
4173
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_LOCAL_COMMANDS);
4174
	}
4175

4176
	if (id->driver_info & BTUSB_INTEL_BOOT) {
4177
		hdev->manufacturer = 2;
4178
		hci_set_quirk(hdev, HCI_QUIRK_RAW_DEVICE);
4179
	}
4180

4181
	if (id->driver_info & BTUSB_ATH3012) {
4182
		data->setup_on_usb = btusb_setup_qca;
4183
		hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4184
		hci_set_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
4185
		hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER);
4186
	}
4187

4188
	if (id->driver_info & BTUSB_QCA_ROME) {
4189
		data->setup_on_usb = btusb_setup_qca;
4190
		hdev->shutdown = btusb_shutdown_qca;
4191
		hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4192
		hdev->reset = btusb_qca_reset;
4193
		hci_set_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
4194
		btusb_check_needs_reset_resume(intf);
4195
	}
4196

4197
	if (id->driver_info & BTUSB_QCA_WCN6855) {
4198
		data->qca_dump.id_vendor = id->idVendor;
4199
		data->qca_dump.id_product = id->idProduct;
4200
		data->recv_event = btusb_recv_evt_qca;
4201
		data->recv_acl = btusb_recv_acl_qca;
4202
		hci_devcd_register(hdev, btusb_coredump_qca, btusb_dump_hdr_qca, NULL);
4203
		data->setup_on_usb = btusb_setup_qca;
4204
		hdev->shutdown = btusb_shutdown_qca;
4205
		hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4206
		hdev->reset = btusb_qca_reset;
4207
		hci_set_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
4208
		hci_set_msft_opcode(hdev, 0xFD70);
4209
	}
4210

4211
	if (id->driver_info & BTUSB_AMP) {
4212
		/* AMP controllers do not support SCO packets */
4213
		data->isoc = NULL;
4214
	} else {
4215
		/* Interface orders are hardcoded in the specification */
4216
		data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4217
		data->isoc_ifnum = ifnum_base + 1;
4218
	}
4219

4220
	if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4221
	    (id->driver_info & BTUSB_REALTEK)) {
4222
		btrtl_set_driver_name(hdev, btusb_driver.name);
4223
		hdev->setup = btusb_setup_realtek;
4224
		hdev->shutdown = btrtl_shutdown_realtek;
4225
		hdev->reset = btusb_rtl_reset;
4226
		hdev->hw_error = btusb_rtl_hw_error;
4227

4228
		/* Realtek devices need to set remote wakeup on auto-suspend */
4229
		set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
4230
		set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4231
	}
4232

4233
	if (id->driver_info & BTUSB_ACTIONS_SEMI) {
4234
		/* Support is advertised, but not implemented */
4235
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_ERR_DATA_REPORTING);
4236
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER);
4237
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT);
4238
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_EXT_SCAN);
4239
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE);
4240
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_EXT_CREATE_CONN);
4241
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT);
4242
	}
4243

4244
	if (!reset)
4245
		hci_set_quirk(hdev, HCI_QUIRK_RESET_ON_CLOSE);
4246

4247
	if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4248
		if (!disable_scofix)
4249
			hci_set_quirk(hdev, HCI_QUIRK_FIXUP_BUFFER_SIZE);
4250
	}
4251

4252
	if (id->driver_info & BTUSB_BROKEN_ISOC)
4253
		data->isoc = NULL;
4254

4255
	if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4256
		hci_set_quirk(hdev, HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED);
4257

4258
	if (id->driver_info & BTUSB_INVALID_LE_STATES)
4259
		hci_set_quirk(hdev, HCI_QUIRK_BROKEN_LE_STATES);
4260

4261
	if (id->driver_info & BTUSB_DIGIANSWER) {
4262
		data->cmdreq_type = USB_TYPE_VENDOR;
4263
		hci_set_quirk(hdev, HCI_QUIRK_RESET_ON_CLOSE);
4264
	}
4265

4266
	if (id->driver_info & BTUSB_CSR) {
4267
		struct usb_device *udev = data->udev;
4268
		u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4269

4270
		/* Old firmware would otherwise execute USB reset */
4271
		if (bcdDevice < 0x117)
4272
			hci_set_quirk(hdev, HCI_QUIRK_RESET_ON_CLOSE);
4273

4274
		/* This must be set first in case we disable it for fakes */
4275
		hci_set_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
4276

4277
		/* Fake CSR devices with broken commands */
4278
		if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4279
		    le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4280
			hdev->setup = btusb_setup_csr;
4281
	}
4282

4283
	if (id->driver_info & BTUSB_SNIFFER) {
4284
		struct usb_device *udev = data->udev;
4285

4286
		/* New sniffer firmware has crippled HCI interface */
4287
		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4288
			hci_set_quirk(hdev, HCI_QUIRK_RAW_DEVICE);
4289
	}
4290

4291
	if (id->driver_info & BTUSB_INTEL_BOOT) {
4292
		/* A bug in the bootloader causes that interrupt interface is
4293
		 * only enabled after receiving SetInterface(0, AltSetting=0).
4294
		 */
4295
		err = usb_set_interface(data->udev, 0, 0);
4296
		if (err < 0) {
4297
			BT_ERR("failed to set interface 0, alt 0 %d", err);
4298
			goto out_free_dev;
4299
		}
4300
	}
4301

4302
	if (data->isoc) {
4303
		err = usb_driver_claim_interface(&btusb_driver,
4304
						 data->isoc, data);
4305
		if (err < 0)
4306
			goto out_free_dev;
4307
	}
4308

4309
	if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4310
		if (!usb_driver_claim_interface(&btusb_driver,
4311
						data->diag, data))
4312
			__set_diag_interface(hdev);
4313
		else
4314
			data->diag = NULL;
4315
	}
4316

4317
	if (enable_autosuspend)
4318
		usb_enable_autosuspend(data->udev);
4319

4320
	data->poll_sync = enable_poll_sync;
4321

4322
	err = hci_register_dev(hdev);
4323
	if (err < 0)
4324
		goto out_free_dev;
4325

4326
	usb_set_intfdata(intf, data);
4327

4328
	debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
4329
			    &force_poll_sync_fops);
4330

4331
	return 0;
4332

4333
out_free_dev:
4334
	if (data->reset_gpio)
4335
		gpiod_put(data->reset_gpio);
4336
	hci_free_dev(hdev);
4337
	return err;
4338
}
4339

4340
static void btusb_disconnect(struct usb_interface *intf)
4341
{
4342
	struct btusb_data *data = usb_get_intfdata(intf);
4343
	struct hci_dev *hdev;
4344

4345
	BT_DBG("intf %p", intf);
4346

4347
	if (!data)
4348
		return;
4349

4350
	hdev = data->hdev;
4351
	usb_set_intfdata(data->intf, NULL);
4352

4353
	if (data->isoc)
4354
		usb_set_intfdata(data->isoc, NULL);
4355

4356
	if (data->diag)
4357
		usb_set_intfdata(data->diag, NULL);
4358

4359
	if (data->disconnect)
4360
		data->disconnect(hdev);
4361

4362
	hci_unregister_dev(hdev);
4363

4364
	if (intf == data->intf) {
4365
		if (data->isoc)
4366
			usb_driver_release_interface(&btusb_driver, data->isoc);
4367
		if (data->diag)
4368
			usb_driver_release_interface(&btusb_driver, data->diag);
4369
	} else if (intf == data->isoc) {
4370
		if (data->diag)
4371
			usb_driver_release_interface(&btusb_driver, data->diag);
4372
		usb_driver_release_interface(&btusb_driver, data->intf);
4373
	} else if (intf == data->diag) {
4374
		usb_driver_release_interface(&btusb_driver, data->intf);
4375
		if (data->isoc)
4376
			usb_driver_release_interface(&btusb_driver, data->isoc);
4377
	}
4378

4379
	if (data->oob_wake_irq)
4380
		device_init_wakeup(&data->udev->dev, false);
4381

4382
	if (data->reset_gpio)
4383
		gpiod_put(data->reset_gpio);
4384

4385
	hci_free_dev(hdev);
4386
}
4387

4388
#ifdef CONFIG_PM
4389
static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4390
{
4391
	struct btusb_data *data = usb_get_intfdata(intf);
4392

4393
	BT_DBG("intf %p", intf);
4394

4395
	/* Don't auto-suspend if there are connections; external suspend calls
4396
	 * shall never fail.
4397
	 */
4398
	if (PMSG_IS_AUTO(message) && hci_conn_count(data->hdev))
4399
		return -EBUSY;
4400

4401
	if (data->suspend_count++)
4402
		return 0;
4403

4404
	spin_lock_irq(&data->txlock);
4405
	if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4406
		set_bit(BTUSB_SUSPENDING, &data->flags);
4407
		spin_unlock_irq(&data->txlock);
4408
	} else {
4409
		spin_unlock_irq(&data->txlock);
4410
		data->suspend_count--;
4411
		return -EBUSY;
4412
	}
4413

4414
	cancel_work_sync(&data->work);
4415

4416
	if (data->suspend)
4417
		data->suspend(data->hdev);
4418

4419
	btusb_stop_traffic(data);
4420
	usb_kill_anchored_urbs(&data->tx_anchor);
4421

4422
	if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4423
		set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4424
		enable_irq_wake(data->oob_wake_irq);
4425
		enable_irq(data->oob_wake_irq);
4426
	}
4427

4428
	/* For global suspend, Realtek devices lose the loaded fw
4429
	 * in them. But for autosuspend, firmware should remain.
4430
	 * Actually, it depends on whether the usb host sends
4431
	 * set feature (enable wakeup) or not.
4432
	 */
4433
	if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4434
		if (PMSG_IS_AUTO(message) &&
4435
		    device_can_wakeup(&data->udev->dev))
4436
			data->udev->do_remote_wakeup = 1;
4437
		else if (!PMSG_IS_AUTO(message) &&
4438
			 !device_may_wakeup(&data->udev->dev)) {
4439
			data->udev->do_remote_wakeup = 0;
4440
			data->udev->reset_resume = 1;
4441
		}
4442
	}
4443

4444
	return 0;
4445
}
4446

4447
static void play_deferred(struct btusb_data *data)
4448
{
4449
	struct urb *urb;
4450
	int err;
4451

4452
	while ((urb = usb_get_from_anchor(&data->deferred))) {
4453
		usb_anchor_urb(urb, &data->tx_anchor);
4454

4455
		err = usb_submit_urb(urb, GFP_ATOMIC);
4456
		if (err < 0) {
4457
			if (err != -EPERM && err != -ENODEV)
4458
				BT_ERR("%s urb %p submission failed (%d)",
4459
				       data->hdev->name, urb, -err);
4460
			kfree(urb->setup_packet);
4461
			usb_unanchor_urb(urb);
4462
			usb_free_urb(urb);
4463
			break;
4464
		}
4465

4466
		data->tx_in_flight++;
4467
		usb_free_urb(urb);
4468
	}
4469

4470
	/* Cleanup the rest deferred urbs. */
4471
	while ((urb = usb_get_from_anchor(&data->deferred))) {
4472
		kfree(urb->setup_packet);
4473
		usb_free_urb(urb);
4474
	}
4475
}
4476

4477
static int btusb_resume(struct usb_interface *intf)
4478
{
4479
	struct btusb_data *data = usb_get_intfdata(intf);
4480
	struct hci_dev *hdev = data->hdev;
4481
	int err = 0;
4482

4483
	BT_DBG("intf %p", intf);
4484

4485
	if (--data->suspend_count)
4486
		return 0;
4487

4488
	/* Disable only if not already disabled (keep it balanced) */
4489
	if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4490
		disable_irq(data->oob_wake_irq);
4491
		disable_irq_wake(data->oob_wake_irq);
4492
	}
4493

4494
	if (!test_bit(HCI_RUNNING, &hdev->flags))
4495
		goto done;
4496

4497
	if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4498
		err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4499
		if (err < 0) {
4500
			clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4501
			goto failed;
4502
		}
4503
	}
4504

4505
	if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4506
		err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4507
		if (err < 0) {
4508
			clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4509
			goto failed;
4510
		}
4511

4512
		btusb_submit_bulk_urb(hdev, GFP_NOIO);
4513
	}
4514

4515
	if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4516
		if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4517
			clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4518
		else
4519
			btusb_submit_isoc_urb(hdev, GFP_NOIO);
4520
	}
4521

4522
	if (data->resume)
4523
		data->resume(hdev);
4524

4525
	spin_lock_irq(&data->txlock);
4526
	play_deferred(data);
4527
	clear_bit(BTUSB_SUSPENDING, &data->flags);
4528
	spin_unlock_irq(&data->txlock);
4529
	schedule_work(&data->work);
4530

4531
	return 0;
4532

4533
failed:
4534
	usb_scuttle_anchored_urbs(&data->deferred);
4535
done:
4536
	spin_lock_irq(&data->txlock);
4537
	clear_bit(BTUSB_SUSPENDING, &data->flags);
4538
	spin_unlock_irq(&data->txlock);
4539

4540
	return err;
4541
}
4542
#endif
4543

4544
#ifdef CONFIG_DEV_COREDUMP
4545
static void btusb_coredump(struct device *dev)
4546
{
4547
	struct btusb_data *data = dev_get_drvdata(dev);
4548
	struct hci_dev *hdev = data->hdev;
4549

4550
	if (hdev->dump.coredump)
4551
		hdev->dump.coredump(hdev);
4552
}
4553
#endif
4554

4555
static struct usb_driver btusb_driver = {
4556
	.name		= "btusb",
4557
	.probe		= btusb_probe,
4558
	.disconnect	= btusb_disconnect,
4559
#ifdef CONFIG_PM
4560
	.suspend	= btusb_suspend,
4561
	.resume		= btusb_resume,
4562
#endif
4563
	.id_table	= btusb_table,
4564
	.supports_autosuspend = 1,
4565
	.disable_hub_initiated_lpm = 1,
4566

4567
#ifdef CONFIG_DEV_COREDUMP
4568
	.driver = {
4569
		.coredump = btusb_coredump,
4570
	},
4571
#endif
4572
};
4573

4574
module_usb_driver(btusb_driver);
4575

4576
module_param(disable_scofix, bool, 0644);
4577
MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4578

4579
module_param(force_scofix, bool, 0644);
4580
MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4581

4582
module_param(enable_autosuspend, bool, 0644);
4583
MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4584

4585
module_param(reset, bool, 0644);
4586
MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4587

4588
MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
4589
MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4590
MODULE_VERSION(VERSION);
4591
MODULE_LICENSE("GPL");
4592

4593
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