Release 4.12 drivers/bluetooth/btusb.c

Directory: drivers/bluetooth
/*
 *
 *  Generic Bluetooth USB driver
 *
 *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/module.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/suspend.h>
#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btintel.h"
#include "btbcm.h"
#include "btrtl.h"


#define VERSION "0.8"


static bool disable_scofix;

static bool force_scofix;


static bool reset = true;


static struct usb_driver btusb_driver;


#define BTUSB_IGNORE		0x01

#define BTUSB_DIGIANSWER	0x02

#define BTUSB_CSR		0x04

#define BTUSB_SNIFFER		0x08

#define BTUSB_BCM92035		0x10

#define BTUSB_BROKEN_ISOC	0x20

#define BTUSB_WRONG_SCO_MTU	0x40

#define BTUSB_ATH3012		0x80

#define BTUSB_INTEL		0x100

#define BTUSB_INTEL_BOOT	0x200

#define BTUSB_BCM_PATCHRAM	0x400

#define BTUSB_MARVELL		0x800

#define BTUSB_SWAVE		0x1000

#define BTUSB_INTEL_NEW		0x2000

#define BTUSB_AMP		0x4000

#define BTUSB_QCA_ROME		0x8000

#define BTUSB_BCM_APPLE		0x10000

#define BTUSB_REALTEK		0x20000

#define BTUSB_BCM2045		0x40000

#define BTUSB_IFNUM_2		0x80000

#define BTUSB_CW6622		0x100000


static const struct usb_device_id btusb_table[] = {
	/* Generic Bluetooth USB device */
	{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },

	/* Generic Bluetooth AMP device */
	{ USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },

	/* Generic Bluetooth USB interface */
	{ USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },

	/* Apple-specific (Broadcom) devices */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },

	/* MediaTek MT76x0E */
	{ USB_DEVICE(0x0e8d, 0x763f) },

	/* Broadcom SoftSailing reporting vendor specific */
	{ USB_DEVICE(0x0a5c, 0x21e1) },

	/* Apple MacBookPro 7,1 */
	{ USB_DEVICE(0x05ac, 0x8213) },

	/* Apple iMac11,1 */
	{ USB_DEVICE(0x05ac, 0x8215) },

	/* Apple MacBookPro6,2 */
	{ USB_DEVICE(0x05ac, 0x8218) },

	/* Apple MacBookAir3,1, MacBookAir3,2 */
	{ USB_DEVICE(0x05ac, 0x821b) },

	/* Apple MacBookAir4,1 */
	{ USB_DEVICE(0x05ac, 0x821f) },

	/* Apple MacBookPro8,2 */
	{ USB_DEVICE(0x05ac, 0x821a) },

	/* Apple MacMini5,1 */
	{ USB_DEVICE(0x05ac, 0x8281) },

	/* AVM BlueFRITZ! USB v2.0 */
	{ USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },

	/* Bluetooth Ultraport Module from IBM */
	{ USB_DEVICE(0x04bf, 0x030a) },

	/* ALPS Modules with non-standard id */
	{ USB_DEVICE(0x044e, 0x3001) },
	{ USB_DEVICE(0x044e, 0x3002) },

	/* Ericsson with non-standard id */
	{ USB_DEVICE(0x0bdb, 0x1002) },

	/* Canyon CN-BTU1 with HID interfaces */
	{ USB_DEVICE(0x0c10, 0x0000) },

	/* Broadcom BCM20702A0 */
	{ USB_DEVICE(0x413c, 0x8197) },

	/* Broadcom BCM20702B0 (Dynex/Insignia) */
	{ USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },

	/* Broadcom BCM43142A0 (Foxconn/Lenovo) */
	{ USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },

	/* Broadcom BCM920703 (HTC Vive) */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Foxconn - Hon Hai */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Lite-On Technology - Broadcom based */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Broadcom devices with vendor specific id */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* ASUSTek Computer - Broadcom based */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Belkin F8065bf - Broadcom based */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* IMC Networks - Broadcom based */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Dell Computer - Broadcom based  */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Toshiba Corp - Broadcom based */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
	  .driver_info = BTUSB_BCM_PATCHRAM },

	/* Intel Bluetooth USB Bootloader (RAM module) */
	{ USB_DEVICE(0x8087, 0x0a5a),
	  .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },

	{ }	/* Terminating entry */
};

MODULE_DEVICE_TABLE(usb, btusb_table);


static const struct usb_device_id blacklist_table[] = {
	/* CSR BlueCore devices */
	{ USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },

	/* Broadcom BCM2033 without firmware */
	{ USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },

	/* Broadcom BCM2045 devices */
	{ USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },

	/* Atheros 3011 with sflash firmware */
	{ USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
	{ USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
	{ USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
	{ USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
	{ USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
	{ USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
	{ USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },

	/* Atheros AR9285 Malbec with sflash firmware */
	{ USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },

	/* Atheros 3012 with sflash firmware */
	{ USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },

	/* Atheros AR5BBU12 with sflash firmware */
	{ USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },

	/* Atheros AR5BBU12 with sflash firmware */
	{ USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
	{ USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },

	/* QCA ROME chipset */
	{ USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
	{ USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
	{ USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
	{ USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
	{ USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
	{ USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
	{ USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	/* Intel Bluetooth devices */
	{ USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
	{ USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
	{ USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
	{ USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
	{ USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
	{ USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },

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

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

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

	/* Additional Realtek 8723BE Bluetooth devices */
	{ USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },

	/* Additional Realtek 8821AE Bluetooth devices */
	{ USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
	{ USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },

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

	{ }	/* Terminating entry */
};


#define BTUSB_MAX_ISOC_FRAMES	10


#define BTUSB_INTR_RUNNING	0

#define BTUSB_BULK_RUNNING	1

#define BTUSB_ISOC_RUNNING	2

#define BTUSB_SUSPENDING	3

#define BTUSB_DID_ISO_RESUME	4

#define BTUSB_BOOTLOADER	5

#define BTUSB_DOWNLOADING	6

#define BTUSB_FIRMWARE_LOADED	7

#define BTUSB_FIRMWARE_FAILED	8

#define BTUSB_BOOTING		9

#define BTUSB_RESET_RESUME	10

#define BTUSB_DIAG_RUNNING	11

#define BTUSB_OOB_WAKE_ENABLED	12


struct btusb_data {
	
struct hci_dev       *hdev;
	
struct usb_device    *udev;
	
struct usb_interface *intf;
	
struct usb_interface *isoc;
	
struct usb_interface *diag;

	
unsigned long flags;

	
struct work_struct work;
	
struct work_struct waker;

	
struct usb_anchor deferred;
	
struct usb_anchor tx_anchor;
	
int tx_in_flight;
	
spinlock_t txlock;

	
struct usb_anchor intr_anchor;
	
struct usb_anchor bulk_anchor;
	
struct usb_anchor isoc_anchor;
	
struct usb_anchor diag_anchor;
	
spinlock_t rxlock;

	
struct sk_buff *evt_skb;
	
struct sk_buff *acl_skb;
	
struct sk_buff *sco_skb;

	
struct usb_endpoint_descriptor *intr_ep;
	
struct usb_endpoint_descriptor *bulk_tx_ep;
	
struct usb_endpoint_descriptor *bulk_rx_ep;
	
struct usb_endpoint_descriptor *isoc_tx_ep;
	
struct usb_endpoint_descriptor *isoc_rx_ep;
	
struct usb_endpoint_descriptor *diag_tx_ep;
	
struct usb_endpoint_descriptor *diag_rx_ep;

	
__u8 cmdreq_type;
	
__u8 cmdreq;

	
unsigned int sco_num;
	
int isoc_altsetting;
	
int suspend_count;

	
int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
	
int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);

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

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



static inline void btusb_free_frags(struct btusb_data *data)
{
	unsigned long flags;

	spin_lock_irqsave(&data->rxlock, flags);

	kfree_skb(data->evt_skb);
	data->evt_skb = NULL;

	kfree_skb(data->acl_skb);
	data->acl_skb = NULL;

	kfree_skb(data->sco_skb);
	data->sco_skb = NULL;

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

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 75 100.00% 1 100.00%
Total 75 100.00% 1 100.00%



static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
{
	struct sk_buff *skb;
	int err = 0;

	spin_lock(&data->rxlock);
	skb = data->evt_skb;

	while (count) {
		int len;

		if (!skb) {
			skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
			if (!skb) {
				err = -ENOMEM;
				break;
			}

			hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
			hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
		}

		len = min_t(uint, hci_skb_expect(skb), count);
		memcpy(skb_put(skb, len), buffer, len);

		count -= len;
		buffer += len;
		hci_skb_expect(skb) -= len;

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

			if (skb_tailroom(skb) < hci_skb_expect(skb)) {
				kfree_skb(skb);
				skb = NULL;

				err = -EILSEQ;
				break;
			}
		}

		if (!hci_skb_expect(skb)) {
			/* Complete frame */
			data->recv_event(data->hdev, skb);
			skb = NULL;
		}
	}

	data->evt_skb = skb;
	spin_unlock(&data->rxlock);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 232 100.00% 4 100.00%
Total 232 100.00% 4 100.00%



static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
{
	struct sk_buff *skb;
	int err = 0;

	spin_lock(&data->rxlock);
	skb = data->acl_skb;

	while (count) {
		int len;

		if (!skb) {
			skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
			if (!skb) {
				err = -ENOMEM;
				break;
			}

			hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
			hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
		}

		len = min_t(uint, hci_skb_expect(skb), count);
		memcpy(skb_put(skb, len), buffer, len);

		count -= len;
		buffer += len;
		hci_skb_expect(skb) -= len;

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

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

			if (skb_tailroom(skb) < hci_skb_expect(skb)) {
				kfree_skb(skb);
				skb = NULL;

				err = -EILSEQ;
				break;
			}
		}

		if (!hci_skb_expect(skb)) {
			/* Complete frame */
			hci_recv_frame(data->hdev, skb);
			skb = NULL;
		}
	}

	data->acl_skb = skb;
	spin_unlock(&data->rxlock);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 238 100.00% 3 100.00%
Total 238 100.00% 3 100.00%



static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
{
	struct sk_buff *skb;
	int err = 0;

	spin_lock(&data->rxlock);
	skb = data->sco_skb;

	while (count) {
		int len;

		if (!skb) {
			skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
			if (!skb) {
				err = -ENOMEM;
				break;
			}

			hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
			hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
		}

		len = min_t(uint, hci_skb_expect(skb), count);
		memcpy(skb_put(skb, len), buffer, len);

		count -= len;
		buffer += len;
		hci_skb_expect(skb) -= len;

		if (skb->len == HCI_SCO_HDR_SIZE) {
			/* Complete SCO header */
			hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;

			if (skb_tailroom(skb) < hci_skb_expect(skb)) {
				kfree_skb(skb);
				skb = NULL;

				err = -EILSEQ;
				break;
			}
		}

		if (!hci_skb_expect(skb)) {
			/* Complete frame */
			hci_recv_frame(data->hdev, skb);
			skb = NULL;
		}
	}

	data->sco_skb = skb;
	spin_unlock(&data->rxlock);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 230 100.00% 3 100.00%
Total 230 100.00% 3 100.00%



static void btusb_intr_complete(struct urb *urb)
{
	struct hci_dev *hdev = urb->context;
	struct btusb_data *data = hci_get_drvdata(hdev);
	int err;

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

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

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

		if (btusb_recv_intr(data, urb->transfer_buffer,
				    urb->actual_length) < 0) {
			BT_ERR("%s corrupted event packet", hdev->name);
			hdev->stat.err_rx++;
		}
	} else if (urb->status == -ENOENT) {
		/* Avoid suspend failed when usb_kill_urb */
		return;
	}

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

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

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err < 0) {
		/* -EPERM: urb is being killed;
                 * -ENODEV: device got disconnected */
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p failed to resubmit (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 178 82.79% 3 37.50%
Champion Chen 14 6.51% 1 12.50%
Oliver Neukum 7 3.26% 1 12.50%
Stefan Seyfried 7 3.26% 1 12.50%
Paul Bolle 6 2.79% 1 12.50%
David Herrmann 3 1.40% 1 12.50%
Total 215 100.00% 8 100.00%



static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;
	unsigned char *buf;
	unsigned int pipe;
	int err, size;

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

	if (!data->intr_ep)
		return -ENODEV;

	urb = usb_alloc_urb(0, mem_flags);
	if (!urb)
		return -ENOMEM;

	size = le16_to_cpu(data->intr_ep->wMaxPacketSize);

	buf = kmalloc(size, mem_flags);
	if (!buf) {
		usb_free_urb(urb);
		return -ENOMEM;
	}

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

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

	urb->transfer_flags |= URB_FREE_BUFFER;

	usb_anchor_urb(urb, &data->intr_anchor);

	err = usb_submit_urb(urb, mem_flags);
	if (err < 0) {
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p submission failed (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}

	usb_free_urb(urb);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 214 93.45% 3 60.00%
Paul Bolle 12 5.24% 1 20.00%
David Herrmann 3 1.31% 1 20.00%
Total 229 100.00% 5 100.00%



static void btusb_bulk_complete(struct urb *urb)
{
	struct hci_dev *hdev = urb->context;
	struct btusb_data *data = hci_get_drvdata(hdev);
	int err;

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

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

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

		if (data->recv_bulk(data, urb->transfer_buffer,
				    urb->actual_length) < 0) {
			BT_ERR("%s corrupted ACL packet", hdev->name);
			hdev->stat.err_rx++;
		}
	} else if (urb->status == -ENOENT) {
		/* Avoid suspend failed when usb_kill_urb */
		return;
	}

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

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

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err < 0) {
		/* -EPERM: urb is being killed;
                 * -ENODEV: device got disconnected */
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p failed to resubmit (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 180 82.95% 4 44.44%
Champion Chen 14 6.45% 1 11.11%
Stefan Seyfried 7 3.23% 1 11.11%
Oliver Neukum 7 3.23% 1 11.11%
Paul Bolle 6 2.76% 1 11.11%
David Herrmann 3 1.38% 1 11.11%
Total 217 100.00% 9 100.00%



static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;
	unsigned char *buf;
	unsigned int pipe;
	int err, size = HCI_MAX_FRAME_SIZE;

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

	if (!data->bulk_rx_ep)
		return -ENODEV;

	urb = usb_alloc_urb(0, mem_flags);
	if (!urb)
		return -ENOMEM;

	buf = kmalloc(size, mem_flags);
	if (!buf) {
		usb_free_urb(urb);
		return -ENOMEM;
	}

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

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

	urb->transfer_flags |= URB_FREE_BUFFER;

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

	err = usb_submit_urb(urb, mem_flags);
	if (err < 0) {
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p submission failed (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}

	usb_free_urb(urb);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 197 89.14% 3 42.86%
Paul Bolle 12 5.43% 1 14.29%
Oliver Neukum 7 3.17% 1 14.29%
David Herrmann 3 1.36% 1 14.29%
Vikram Kandukuri 2 0.90% 1 14.29%
Total 221 100.00% 7 100.00%



static void btusb_isoc_complete(struct urb *urb)
{
	struct hci_dev *hdev = urb->context;
	struct btusb_data *data = hci_get_drvdata(hdev);
	int i, err;

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

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

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

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

			hdev->stat.byte_rx += length;

			if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
					    length) < 0) {
				BT_ERR("%s corrupted SCO packet", hdev->name);
				hdev->stat.err_rx++;
			}
		}
	} else if (urb->status == -ENOENT) {
		/* Avoid suspend failed when usb_kill_urb */
		return;
	}

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

	usb_anchor_urb(urb, &data->isoc_anchor);

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err < 0) {
		/* -EPERM: urb is being killed;
                 * -ENODEV: device got disconnected */
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p failed to resubmit (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 233 88.59% 3 42.86%
Champion Chen 14 5.32% 1 14.29%
Stefan Seyfried 7 2.66% 1 14.29%
Paul Bolle 6 2.28% 1 14.29%
David Herrmann 3 1.14% 1 14.29%
Total 263 100.00% 7 100.00%



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

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

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

	if (len && i < BTUSB_MAX_ISOC_FRAMES) {
		urb->iso_frame_desc[i].offset = offset;
		urb->iso_frame_desc[i].length = len;
		i++;
	}

	urb->number_of_packets = i;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 123 99.19% 1 50.00%
Jesper Juhl 1 0.81% 1 50.00%
Total 124 100.00% 2 100.00%



static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;
	unsigned char *buf;
	unsigned int pipe;
	int err, size;

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

	if (!data->isoc_rx_ep)
		return -ENODEV;

	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
	if (!urb)
		return -ENOMEM;

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

	buf = kmalloc(size, mem_flags);
	if (!buf) {
		usb_free_urb(urb);
		return -ENOMEM;
	}

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

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

	urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;

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

	usb_anchor_urb(urb, &data->isoc_anchor);

	err = usb_submit_urb(urb, mem_flags);
	if (err < 0) {
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p submission failed (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}

	usb_free_urb(urb);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 221 88.76% 2 40.00%
Bing Zhao 13 5.22% 1 20.00%
Paul Bolle 12 4.82% 1 20.00%
David Herrmann 3 1.20% 1 20.00%
Total 249 100.00% 5 100.00%



static void btusb_diag_complete(struct urb *urb)
{
	struct hci_dev *hdev = urb->context;
	struct btusb_data *data = hci_get_drvdata(hdev);
	int err;

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

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

		skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
		if (skb) {
			memcpy(skb_put(skb, urb->actual_length),
			       urb->transfer_buffer, urb->actual_length);
			hci_recv_diag(hdev, skb);
		}
	} else if (urb->status == -ENOENT) {
		/* Avoid suspend failed when usb_kill_urb */
		return;
	}

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

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

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err < 0) {
		/* -EPERM: urb is being killed;
                 * -ENODEV: device got disconnected */
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p failed to resubmit (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 139 67.80% 2 50.00%
Oliver Neukum 63 30.73% 1 25.00%
David Herrmann 3 1.46% 1 25.00%
Total 205 100.00% 4 100.00%



static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;
	unsigned char *buf;
	unsigned int pipe;
	int err, size = HCI_MAX_FRAME_SIZE;

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

	if (!data->diag_rx_ep)
		return -ENODEV;

	urb = usb_alloc_urb(0, mem_flags);
	if (!urb)
		return -ENOMEM;

	buf = kmalloc(size, mem_flags);
	if (!buf) {
		usb_free_urb(urb);
		return -ENOMEM;
	}

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

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

	urb->transfer_flags |= URB_FREE_BUFFER;

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

	err = usb_submit_urb(urb, mem_flags);
	if (err < 0) {
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p submission failed (%d)",
			       hdev->name, urb, -err);
		usb_unanchor_urb(urb);
	}

	usb_free_urb(urb);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 185 83.71% 5 71.43%
Oliver Neukum 26 11.76% 1 14.29%
Ben Young Tae Kim 10 4.52% 1 14.29%
Total 221 100.00% 7 100.00%



static void btusb_tx_complete(struct urb *urb)
{
	struct sk_buff *skb = urb->context;
	struct hci_dev *hdev = (struct hci_dev *)skb->dev;
	struct btusb_data *data = hci_get_drvdata(hdev);

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

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

	if (!urb->status)
		hdev->stat.byte_tx += urb->transfer_buffer_length;
	else
		hdev->stat.err_tx++;

done:
	spin_lock(&data->txlock);
	data->tx_in_flight--;
	spin_unlock(&data->txlock);

	kfree(urb->setup_packet);

	kfree_skb(skb);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 122 87.77% 5 55.56%
Oliver Neukum 11 7.91% 2 22.22%
Linus Torvalds 3 2.16% 1 11.11%
David Herrmann 3 2.16% 1 11.11%
Total 139 100.00% 9 100.00%



static void btusb_isoc_tx_complete(struct urb *urb)
{
	struct sk_buff *skb = urb->context;
	struct hci_dev *hdev = (struct hci_dev *)skb->dev;

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

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

	if (!urb->status)
		hdev->stat.byte_tx += urb->transfer_buffer_length;
	else
		hdev->stat.err_tx++;

done:
	kfree(urb->setup_packet);

	kfree_skb(skb);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 108 100.00% 3 100.00%
Total 108 100.00% 3 100.00%



static int btusb_open(struct hci_dev *hdev)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	int err;

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

	err = usb_autopm_get_interface(data->intf);
	if (err < 0)
		return err;

	/* Patching USB firmware files prior to starting any URBs of HCI path
         * It is more safe to use USB bulk channel for downloading USB patch
         */
	if (data->setup_on_usb) {
		err = data->setup_on_usb(hdev);
		if (err < 0)
			return err;
	}

	data->intf->needs_remote_wakeup = 1;

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

	err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
	if (err < 0)
		goto failed;

	err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
	if (err < 0) {
		usb_kill_anchored_urbs(&data->intr_anchor);
		goto failed;
	}

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

	if (data->diag) {
		if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
			set_bit(BTUSB_DIAG_RUNNING, &data->flags);
	}

done:
	usb_autopm_put_interface(data->intf);
	return 0;

failed:
	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
	usb_autopm_put_interface(data->intf);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 208 92.04% 6 75.00%
Ethan Hsieh 15 6.64% 1 12.50%
David Herrmann 3 1.33% 1 12.50%
Total 226 100.00% 8 100.00%



static void btusb_stop_traffic(struct btusb_data *data)
{
	usb_kill_anchored_urbs(&data->intr_anchor);
	usb_kill_anchored_urbs(&data->bulk_anchor);
	usb_kill_anchored_urbs(&data->isoc_anchor);
	usb_kill_anchored_urbs(&data->diag_anchor);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 43 100.00% 3 100.00%
Total 43 100.00% 3 100.00%



static int btusb_close(struct hci_dev *hdev)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	int err;

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

	cancel_work_sync(&data->work);
	cancel_work_sync(&data->waker);

	clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
	clear_bit(BTUSB_BULK_RUNNING, &data->flags);
	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
	clear_bit(BTUSB_DIAG_RUNNING, &data->flags);

	btusb_stop_traffic(data);
	btusb_free_frags(data);

	err = usb_autopm_get_interface(data->intf);
	if (err < 0)
		goto failed;

	data->intf->needs_remote_wakeup = 0;
	usb_autopm_put_interface(data->intf);

failed:
	usb_scuttle_anchored_urbs(&data->deferred);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 139 95.86% 4 80.00%
Gustavo Fernando Padovan 6 4.14% 1 20.00%
Total 145 100.00% 5 100.00%



static int btusb_flush(struct hci_dev *hdev)
{
	struct btusb_data *data = hci_get_drvdata(hdev);

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

	usb_kill_anchored_urbs(&data->tx_anchor);
	btusb_free_frags(data);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 38 82.61% 3 75.00%
Oliver Neukum 8 17.39% 1 25.00%
Total 46 100.00% 4 100.00%



static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct usb_ctrlrequest *dr;
	struct urb *urb;
	unsigned int pipe;

	urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!urb)
		return ERR_PTR(-ENOMEM);

	dr = kmalloc(sizeof(*dr), GFP_KERNEL);
	if (!dr) {
		usb_free_urb(urb);
		return ERR_PTR(-ENOMEM);
	}

	dr->bRequestType = data->cmdreq_type;
	dr->bRequest     = data->cmdreq;
	dr->wIndex       = 0;
	dr->wValue       = 0;
	dr->wLength      = __cpu_to_le16(skb->len);

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

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

	skb->dev = (void *)hdev;

	return urb;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 187 100.00% 2 100.00%
Total 187 100.00% 2 100.00%



static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;
	unsigned int pipe;

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

	urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!urb)
		return ERR_PTR(-ENOMEM);

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

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

	skb->dev = (void *)hdev;

	return urb;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 123 100.00% 2 100.00%
Total 123 100.00% 2 100.00%



static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;
	unsigned int pipe;

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

	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
	if (!urb)
		return ERR_PTR(-ENOMEM);

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

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

	urb->transfer_flags  = URB_ISO_ASAP;

	__fill_isoc_descriptor(urb, skb->len,
			       le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));

	skb->dev = (void *)hdev;

	return urb;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 150 98.04% 6 85.71%
David Herrmann 3 1.96% 1 14.29%
Total 153 100.00% 7 100.00%



static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	int err;

	usb_anchor_urb(urb, &data->tx_anchor);

	err = usb_submit_urb(urb, GFP_KERNEL);
	if (err < 0) {
		if (err != -EPERM && err != -ENODEV)
			BT_ERR("%s urb %p submission failed (%d)",
			       hdev->name, urb, -err);
		kfree(urb->setup_packet);
		usb_unanchor_urb(urb);
	} else {
		usb_mark_last_busy(data->udev);
	}

	usb_free_urb(urb);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 108 96.43% 3 60.00%
David Herrmann 3 2.68% 1 20.00%
Jesper Juhl 1 0.89% 1 20.00%
Total 112 100.00% 5 100.00%



static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	unsigned long flags;
	bool suspending;

	spin_lock_irqsave(&data->txlock, flags);
	suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
	if (!suspending)
		data->tx_in_flight++;
	spin_unlock_irqrestore(&data->txlock, flags);

	if (!suspending)
		return submit_tx_urb(hdev, urb);

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

	usb_free_urb(urb);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 77 67.54% 3 42.86%
Oliver Neukum 21 18.42% 1 14.29%
Kuba Pawlak 9 7.89% 1 14.29%
Gustavo Fernando Padovan 4 3.51% 1 14.29%
Mikel Astiz 3 2.63% 1 14.29%
Total 114 100.00% 7 100.00%



static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct urb *urb;

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

	switch (hci_skb_pkt_type(skb)) {
	case HCI_COMMAND_PKT:
		urb = alloc_ctrl_urb(hdev, skb);
		if (IS_ERR(urb))
			return PTR_ERR(urb);

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

	case HCI_ACLDATA_PKT:
		urb = alloc_bulk_urb(hdev, skb);
		if (IS_ERR(urb))
			return PTR_ERR(urb);

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

	case HCI_SCODATA_PKT:
		if (hci_conn_num(hdev, SCO_LINK) < 1)
			return -ENODEV;

		urb = alloc_isoc_urb(hdev, skb);
		if (IS_ERR(urb))
			return PTR_ERR(urb);

		hdev->stat.sco_tx++;
		return submit_tx_urb(hdev, urb);
	}

	return -EILSEQ;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 157 88.20% 5 62.50%
Oliver Neukum 14 7.87% 1 12.50%
Kuba Pawlak 4 2.25% 1 12.50%
Gustavo Fernando Padovan 3 1.69% 1 12.50%
Total 178 100.00% 8 100.00%



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

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

	if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
		data->sco_num = hci_conn_num(hdev, SCO_LINK);
		schedule_work(&data->work);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 70 100.00% 2 100.00%
Total 70 100.00% 2 100.00%



static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct usb_interface *intf = data->isoc;
	struct usb_endpoint_descriptor *ep_desc;
	int i, err;

	if (!data->isoc)
		return -ENODEV;

	err = usb_set_interface(data->udev, 1, altsetting);
	if (err < 0) {
		BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
		return err;
	}

	data->isoc_altsetting = altsetting;

	data->isoc_tx_ep = NULL;
	data->isoc_rx_ep = NULL;

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

		if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
			data->isoc_tx_ep = ep_desc;
			continue;
		}

		if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
			data->isoc_rx_ep = ep_desc;
			continue;
		}
	}

	if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
		BT_ERR("%s invalid SCO descriptors", hdev->name);
		return -ENODEV;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 214 99.07% 4 80.00%
Johan Hedberg 2 0.93% 1 20.00%
Total 216 100.00% 5 100.00%



static void btusb_work(struct work_struct *work)
{
	struct btusb_data *data = container_of(work, struct btusb_data, work);
	struct hci_dev *hdev = data->hdev;
	int new_alts;
	int err;

	if (data->sco_num > 0) {
		if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
			err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
			if (err < 0) {
				clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
				usb_kill_anchored_urbs(&data->isoc_anchor);
				return;
			}

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

		if (hdev->voice_setting & 0x0020) {
			static const int alts[3] = { 2, 4, 5 };

			new_alts = alts[data->sco_num - 1];
		} else {
			new_alts = data->sco_num;
		}

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

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

			/* When isochronous alternate setting needs to be
                         * changed, because SCO connection has been added
                         * or removed, a packet fragment may be left in the
                         * reassembling state. This could lead to wrongly
                         * assembled fragments.
                         *
                         * Clear outstanding fragment when selecting a new
                         * alternate setting.
                         */
			spin_lock_irqsave(&data->rxlock, flags);
			kfree_skb(data->sco_skb);
			data->sco_skb = NULL;
			spin_unlock_irqrestore(&data->rxlock, flags);

			if (__set_isoc_interface(hdev, new_alts) < 0)
				return;
		}

		if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
			if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
				clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
			else
				btusb_submit_isoc_urb(hdev, GFP_KERNEL);
		}
	} else {
		clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
		usb_kill_anchored_urbs(&data->isoc_anchor);

		__set_isoc_interface(hdev, 0);
		if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
			usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 260 75.80% 2 33.33%
Daniel Drake 31 9.04% 1 16.67%
Tedd Ho-Jeong An 29 8.45% 1 16.67%
Carlo Caione 13 3.79% 1 16.67%
Kuba Pawlak 10 2.92% 1 16.67%
Total 343 100.00% 6 100.00%



static void btusb_waker(struct work_struct *work)
{
	struct btusb_data *data = container_of(work, struct btusb_data, waker);
	int err;

	err = usb_autopm_get_interface(data->intf);
	if (err < 0)
		return;

	usb_autopm_put_interface(data->intf);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 52 100.00% 1 100.00%
Total 52 100.00% 1 100.00%



static int btusb_setup_bcm92035(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	u8 val = 0x00;

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

	skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb))
		BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
	else
		kfree_skb(skb);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 73 100.00% 1 100.00%
Total 73 100.00% 1 100.00%



static int btusb_setup_csr(struct hci_dev *hdev)
{
	struct hci_rp_read_local_version *rp;
	struct sk_buff *skb;

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

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		int err = PTR_ERR(skb);
		BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
		return err;
	}

	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
		BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
		kfree_skb(skb);
		return -EIO;
	}

	rp = (struct hci_rp_read_local_version *)skb->data;

	/* Detect controllers which aren't real CSR ones. */
	if (le16_to_cpu(rp->manufacturer) != 10 ||
	    le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
		/* Clear the reset quirk since this is not an actual
                 * early Bluetooth 1.1 device from CSR.
                 */
		clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);

		/* These fake CSR controllers have all a broken
                 * stored link key handling and so just disable it.
                 */
		set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
	}

	kfree_skb(skb);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 172 100.00% 1 100.00%
Total 172 100.00% 1 100.00%



static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
						       struct intel_version *ver)
{
	const struct firmware *fw;
	char fwname[64];
	int ret;

	snprintf(fwname, sizeof(fwname),
		 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
		 ver->hw_platform, ver->hw_variant, ver->hw_revision,
		 ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
		 ver->fw_build_ww, ver->fw_build_yy);

	ret = request_firmware(&fw, fwname, &hdev->dev);
	if (ret < 0) {
		if (ret == -EINVAL) {
			BT_ERR("%s Intel firmware file request failed (%d)",
			       hdev->name, ret);
			return NULL;
		}

		BT_ERR("%s failed to open Intel firmware file: %s(%d)",
		       hdev->name, fwname, ret);

		/* If the correct firmware patch file is not found, use the
                 * default firmware patch file instead
                 */
		snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
			 ver->hw_platform, ver->hw_variant);
		if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
			BT_ERR("%s failed to open default Intel fw file: %s",
			       hdev->name, fwname);
			return NULL;
		}
	}

	BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);

	return fw;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 205 100.00% 1 100.00%
Total 205 100.00% 1 100.00%



static int btusb_setup_intel_patching(struct hci_dev *hdev,
				      const struct firmware *fw,
				      const u8 **fw_ptr, int *disable_patch)
{
	struct sk_buff *skb;
	struct hci_command_hdr *cmd;
	const u8 *cmd_param;
	struct hci_event_hdr *evt = NULL;
	const u8 *evt_param = NULL;
	int remain = fw->size - (*fw_ptr - fw->data);

	/* The first byte indicates the types of the patch command or event.
         * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
         * in the current firmware buffer doesn't start with 0x01 or
         * the size of remain buffer is smaller than HCI command header,
         * the firmware file is corrupted and it should stop the patching
         * process.
         */
	if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
		BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
		return -EINVAL;
	}
	(*fw_ptr)++;
	remain--;

	cmd = (struct hci_command_hdr *)(*fw_ptr);
	*fw_ptr += sizeof(*cmd);
	remain -= sizeof(*cmd);

	/* Ensure that the remain firmware data is long enough than the length
         * of command parameter. If not, the firmware file is corrupted.
         */
	if (remain < cmd->plen) {
		BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
		return -EFAULT;
	}

	/* If there is a command that loads a patch in the firmware
         * file, then enable the patch upon success, otherwise just
         * disable the manufacturer mode, for example patch activation
         * is not required when the default firmware patch file is used
         * because there are no patch data to load.
         */
	if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
		*disable_patch = 0;

	cmd_param = *fw_ptr;
	*fw_ptr += cmd->plen;
	remain -= cmd->plen;

	/* This reads the expected events when the above command is sent to the
         * device. Some vendor commands expects more than one events, for
         * example command status event followed by vendor specific event.
         * For this case, it only keeps the last expected event. so the command
         * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
         * last expected event.
         */
	while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
		(*fw_ptr)++;
		remain--;

		evt = (struct hci_event_hdr *)(*fw_ptr);
		*fw_ptr += sizeof(*evt);
		remain -= sizeof(*evt);

		if (remain < evt->plen) {
			BT_ERR("%s Intel fw corrupted: invalid evt len",
			       hdev->name);
			return -EFAULT;
		}

		evt_param = *fw_ptr;
		*fw_ptr += evt->plen;
		remain -= evt->plen;
	}

	/* Every HCI commands in the firmware file has its correspond event.
         * If event is not found or remain is smaller than zero, the firmware
         * file is corrupted.
         */
	if (!evt || !evt_param || remain < 0) {
		BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
		return -EFAULT;
	}

	skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
				cmd_param, evt->evt, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
		       hdev->name, cmd->opcode, PTR_ERR(skb));
		return PTR_ERR(skb);
	}

	/* It ensures that the returned event matches the event data read from
         * the firmware file. At fist, it checks the length and then
         * the contents of the event.
         */
	if (skb->len != evt->plen) {
		BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
		       le16_to_cpu(cmd->opcode));
		kfree_skb(skb);
		return -EFAULT;
	}

	if (memcmp(skb->data, evt_param, evt->plen)) {
		BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
		       hdev->name, le16_to_cpu(cmd->opcode));
		kfree_skb(skb);
		return -EFAULT;
	}
	kfree_skb(skb);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Tedd Ho-Jeong An 473 100.00% 1 100.00%
Total 473 100.00% 1 100.00%



static int btusb_setup_intel(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	const struct firmware *fw;
	const u8 *fw_ptr;
	int disable_patch, err;
	struct intel_version ver;

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

	/* The controller has a bug with the first HCI command sent to it
         * returning number of completed commands as zero. This would stall the
         * command processing in the Bluetooth core.
         *
         * As a workaround, send HCI Reset command first which will reset the
         * number of completed commands and allow normal command processing
         * from now on.
         */
	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s sending initial HCI reset command failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return PTR_ERR(skb);
	}
	kfree_skb(skb);

	/* Read Intel specific controller version first to allow selection of
         * which firmware file to load.
         *
         * The returned information are hardware variant and revision plus
         * firmware variant, revision and build number.
         */
	err = btintel_read_version(hdev, &ver);
	if (err)
		return err;

	BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
		hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
		ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
		ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);

	/* fw_patch_num indicates the version of patch the device currently
         * have. If there is no patch data in the device, it is always 0x00.
         * So, if it is other than 0x00, no need to patch the device again.
         */
	if (ver.fw_patch_num) {
		BT_INFO("%s: Intel device is already patched. patch num: %02x",
			hdev->name, ver.fw_patch_num);
		goto complete;
	}

	/* Opens the firmware patch file based on the firmware version read
         * from the controller. If it fails to open the matching firmware
         * patch file, it tries to open the default firmware patch file.
         * If no patch file is found, allow the device to operate without
         * a patch.
         */
	fw = btusb_setup_intel_get_fw(hdev, &ver);
	if (!fw)
		goto complete;
	fw_ptr = fw->data;

	/* Enable the manufacturer mode of the controller.
         * Only while this mode is enabled, the driver can download the
         * firmware patch data and configuration parameters.
         */
	err = btintel_enter_mfg(hdev);
	if (err) {
		release_firmware(fw);
		return err;
	}

	disable_patch = 1;

	/* The firmware data file consists of list of Intel specific HCI
         * commands and its expected events. The first byte indicates the
         * type of the message, either HCI command or HCI event.
         *
         * It reads the command and its expected event from the firmware file,
         * and send to the controller. Once __hci_cmd_sync_ev() returns,
         * the returned event is compared with the event read from the firmware
         * file and it will continue until all the messages are downloaded to
         * the controller.
         *
         * Once the firmware patching is completed successfully,
         * the manufacturer mode is disabled with reset and activating the
         * downloaded patch.
         *
         * If the firmware patching fails, the manufacturer mode is
         * disabled with reset and deactivating the patch.
         *
         * If the default patch file is used, no reset is done when disabling
         * the manufacturer.
         */
	while (fw->size > fw_ptr - fw->data) {
		int ret;

		ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
						 &disable_patch);
		if (ret < 0)
			goto exit_mfg_deactivate;
	}

	release_firmware(fw);

	if (disable_patch)
		goto exit_mfg_disable;

	/* Patching completed successfully and disable the manufacturer mode
         * with reset and activate the downloaded firmware patches.
         */
	err = btintel_exit_mfg(hdev, true, true);
	if (err)
		return err;

	BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
		hdev->name);

	goto complete;

exit_mfg_disable:
	/* Disable the manufacturer mode without reset */
	err = btintel_exit_mfg(hdev, false, false);
	if (err)
		return err;

	BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);

	goto complete;

exit_mfg_deactivate:
	release_firmware(fw);

	/* Patching failed. Disable the manufacturer mode with reset and
         * deactivate the downloaded firmware patches.
         */
	err = btintel_exit_mfg(hdev, true, false);
	if (err)
		return err;

	BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
		hdev->name);

complete:
	/* Set the event mask for Intel specific vendor events. This enables
         * a few extra events that are useful during general operation.
         */
	btintel_set_event_mask_mfg(hdev, false);

	btintel_check_bdaddr(hdev);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Tedd Ho-Jeong An 334 82.47% 1 14.29%
Loic Poulain 43 10.62% 2 28.57%
Marcel Holtmann 27 6.67% 3 42.86%
Minjune Kim 1 0.25% 1 14.29%
Total 405 100.00% 7 100.00%



static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
{
	struct sk_buff *skb;
	struct hci_event_hdr *hdr;
	struct hci_ev_cmd_complete *evt;

	skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
	if (!skb)
		return -ENOMEM;

	hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
	hdr->evt = HCI_EV_CMD_COMPLETE;
	hdr->plen = sizeof(*evt) + 1;

	evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
	evt->ncmd = 0x01;
	evt->opcode = cpu_to_le16(opcode);

	*skb_put(skb, 1) = 0x00;

	hci_skb_pkt_type(skb) = HCI_EVENT_PKT;

	return hci_recv_frame(hdev, skb);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 153 100.00% 3 100.00%
Total 153 100.00% 3 100.00%



static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
				 int count)
{
	/* When the device is in bootloader mode, then it can send
         * events via the bulk endpoint. These events are treated the
         * same way as the ones received from the interrupt endpoint.
         */
	if (test_bit(BTUSB_BOOTLOADER, &data->flags))
		return btusb_recv_intr(data, buffer, count);

	return btusb_recv_bulk(data, buffer, count);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 42 82.35% 1 50.00%
Amitkumar Karwar 9 17.65% 1 50.00%
Total 51 100.00% 2 100.00%



static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
			       unsigned int len)
{
	const struct intel_bootup *evt = ptr;

	if (len != sizeof(*evt))
		return;

	if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
		smp_mb__after_atomic();
		wake_up_bit(&data->flags, BTUSB_BOOTING);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 66 100.00% 2 100.00%
Total 66 100.00% 2 100.00%



static void btusb_intel_secure_send_result(struct btusb_data *data,
					   const void *ptr, unsigned int len)
{
	const struct intel_secure_send_result *evt = ptr;

	if (len != sizeof(*evt))
		return;

	if (evt->result)
		set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);

	if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
	    test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
		smp_mb__after_atomic();
		wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 82 89.13% 3 75.00%
Johan Hedberg 10 10.87% 1 25.00%
Total 92 100.00% 4 100.00%



static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);

	if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
		struct hci_event_hdr *hdr = (void *)skb->data;

		if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
		    hdr->plen > 0) {
			const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
			unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;

			switch (skb->data[2]) {
			case 0x02:
				/* When switching to the operational firmware
                                 * the device sends a vendor specific event
                                 * indicating that the bootup completed.
                                 */
				btusb_intel_bootup(data, ptr, len);
				break;
			case 0x06:
				/* When the firmware loading completes the
                                 * device sends out a vendor specific event
                                 * indicating the result of the firmware
                                 * loading.
                                 */
				btusb_intel_secure_send_result(data, ptr, len);
				break;
			}
		}
	}

	return hci_recv_frame(hdev, skb);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 143 97.28% 2 66.67%
Johan Hedberg 4 2.72% 1 33.33%
Total 147 100.00% 3 100.00%



static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;

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

	switch (hci_skb_pkt_type(skb)) {
	case HCI_COMMAND_PKT:
		if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
			struct hci_command_hdr *cmd = (void *)skb->data;
			__u16 opcode = le16_to_cpu(cmd->opcode);

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

			/* When the 0xfc01 command is issued to boot into
                         * the operational firmware, it will actually not
                         * send a command complete event. To keep the flow
                         * control working inject that event here.
                         */
			if (opcode == 0xfc01)
				inject_cmd_complete(hdev, opcode);
		} else {
			urb = alloc_ctrl_urb(hdev, skb);
		}
		if (IS_ERR(urb))
			return PTR_ERR(urb);

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

	case HCI_ACLDATA_PKT:
		urb = alloc_bulk_urb(hdev, skb);
		if (IS_ERR(urb))
			return PTR_ERR(urb);

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

	case HCI_SCODATA_PKT:
		if (hci_conn_num(hdev, SCO_LINK) < 1)
			return -ENODEV;

		urb = alloc_isoc_urb(hdev, skb);
		if (IS_ERR(urb))
			return PTR_ERR(urb);

		hdev->stat.sco_tx++;
		return submit_tx_urb(hdev, urb);
	}

	return -EILSEQ;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 268 100.00% 2 100.00%
Total 268 100.00% 2 100.00%



static int btusb_setup_intel_new(struct hci_dev *hdev)
{
	static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
					  0x00, 0x08, 0x04, 0x00 };
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct sk_buff *skb;
	struct intel_version ver;
	struct intel_boot_params *params;
	const struct firmware *fw;
	const u8 *fw_ptr;
	u32 frag_len;
	char fwname[64];
	ktime_t calltime, delta, rettime;
	unsigned long long duration;
	int err;

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

	calltime = ktime_get();

	/* Read the Intel version information to determine if the device
         * is in bootloader mode or if it already has operational firmware
         * loaded.
         */
	err = btintel_read_version(hdev, &ver);
	if (err)
		return err;

	/* The hardware platform number has a fixed value of 0x37 and
         * for now only accept this single value.
         */
	if (ver.hw_platform != 0x37) {
		BT_ERR("%s: Unsupported Intel hardware platform (%u)",
		       hdev->name, ver.hw_platform);
		return -EINVAL;
	}

	/* Check for supported iBT hardware variants of this firmware
         * loading method.
         *
         * This check has been put in place to ensure correct forward
         * compatibility options when newer hardware variants come along.
         */
	switch (ver.hw_variant) {
	case 0x0b:	/* SfP */
	case 0x0c:	/* WsP */
	case 0x12:	/* ThP */
		break;
	default:
		BT_ERR("%s: Unsupported Intel hardware variant (%u)",
		       hdev->name, ver.hw_variant);
		return -EINVAL;
	}

	btintel_version_info(hdev, &ver);

	/* The firmware variant determines if the device is in bootloader
         * mode or is running operational firmware. The value 0x06 identifies
         * the bootloader and the value 0x23 identifies the operational
         * firmware.
         *
         * When the operational firmware is already present, then only
         * the check for valid Bluetooth device address is needed. This
         * determines if the device will be added as configured or
         * unconfigured controller.
         *
         * It is not possible to use the Secure Boot Parameters in this
         * case since that command is only available in bootloader mode.
         */
	if (ver.fw_variant == 0x23) {
		clear_bit(BTUSB_BOOTLOADER, &data->flags);
		btintel_check_bdaddr(hdev);
		return 0;
	}

	/* If the device is not in bootloader mode, then the only possible
         * choice is to return an error and abort the device initialization.
         */
	if (ver.fw_variant != 0x06) {
		BT_ERR("%s: Unsupported Intel firmware variant (%u)",
		       hdev->name, ver.fw_variant);
		return -ENODEV;
	}

	/* Read the secure boot parameters to identify the operating
         * details of the bootloader.
         */
	skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return PTR_ERR(skb);
	}

	if (skb->len != sizeof(*params)) {
		BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
		kfree_skb(skb);
		return -EILSEQ;
	}

	params = (struct intel_boot_params *)skb->data;

	BT_INFO("%s: Device revision is %u", hdev->name,
		le16_to_cpu(params->dev_revid));

	BT_INFO("%s: Secure boot is %s", hdev->name,
		params->secure_boot ? "enabled" : "disabled");

	BT_INFO("%s: OTP lock is %s", hdev->name,
		params->otp_lock ? "enabled" : "disabled");

	BT_INFO("%s: API lock is %s", hdev->name,
		params->api_lock ? "enabled" : "disabled");

	BT_INFO("%s: Debug lock is %s", hdev->name,
		params->debug_lock ? "enabled" : "disabled");

	BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
		params->min_fw_build_nn, params->min_fw_build_cw,
		2000 + params->min_fw_build_yy);

	/* It is required that every single firmware fragment is acknowledged
         * with a command complete event. If the boot parameters indicate
         * that this bootloader does not send them, then abort the setup.
         */
	if (params->limited_cce != 0x00) {
		BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
		       hdev->name, params->limited_cce);
		kfree_skb(skb);
		return -EINVAL;
	}

	/* If the OTP has no valid Bluetooth device address, then there will
         * also be no valid address for the operational firmware.
         */
	if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
		BT_INFO("%s: No device address configured", hdev->name);
		set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	}

	/* With this Intel bootloader only the hardware variant and device
         * revision information are used to select the right firmware.
         *
         * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
         *
         * Currently the supported hardware variants are:
         *   11 (0x0b) for iBT3.0 (LnP/SfP)
         *   12 (0x0c) for iBT3.5 (WsP)
         */
	snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
		 le16_to_cpu(ver.hw_variant),
		 le16_to_cpu(params->dev_revid));

	err = request_firmware(&fw, fwname, &hdev->dev);
	if (err < 0) {
		BT_ERR("%s: Failed to load Intel firmware file (%d)",
		       hdev->name, err);
		kfree_skb(skb);
		return err;
	}

	BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);

	/* Save the DDC file name for later use to apply once the firmware
         * downloading is done.
         */
	snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
		 le16_to_cpu(ver.hw_variant),
		 le16_to_cpu(params->dev_revid));

	kfree_skb(skb);

	if (fw->size < 644) {
		BT_ERR("%s: Invalid size of firmware file (%zu)",
		       hdev->name, fw->size);
		err = -EBADF;
		goto done;
	}

	set_bit(BTUSB_DOWNLOADING, &data->flags);

	/* Start the firmware download transaction with the Init fragment
         * represented by the 128 bytes of CSS header.
         */
	err = btintel_secure_send(hdev, 0x00, 128, fw->data);
	if (err < 0) {
		BT_ERR("%s: Failed to send firmware header (%d)",
		       hdev->name, err);
		goto done;
	}

	/* Send the 256 bytes of public key information from the firmware
         * as the PKey fragment.
         */
	err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
	if (err < 0) {
		BT_ERR("%s: Failed to send firmware public key (%d)",
		       hdev->name, err);
		goto done;
	}

	/* Send the 256 bytes of signature information from the firmware
         * as the Sign fragment.
         */
	err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
	if (err < 0) {
		BT_ERR("%s: Failed to send firmware signature (%d)",
		       hdev->name, err);
		goto done;
	}

	fw_ptr = fw->data + 644;
	frag_len = 0;

	while (fw_ptr - fw->data < fw->size) {
		struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);

		frag_len += sizeof(*cmd) + cmd->plen;

		/* The parameter length of the secure send command requires
                 * a 4 byte alignment. It happens so that the firmware file
                 * contains proper Intel_NOP commands to align the fragments
                 * as needed.
                 *
                 * Send set of commands with 4 byte alignment from the
                 * firmware data buffer as a single Data fragement.
                 */
		if (!(frag_len % 4)) {
			err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
			if (err < 0) {
				BT_ERR("%s: Failed to send firmware data (%d)",
				       hdev->name, err);
				goto done;
			}

			fw_ptr += frag_len;
			frag_len = 0;
		}
	}

	set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);

	BT_INFO("%s: Waiting for firmware download to complete", hdev->name);

	/* Before switching the device into operational mode and with that
         * booting the loaded firmware, wait for the bootloader notification
         * that all fragments have been successfully received.
         *
         * When the event processing receives the notification, then the
         * BTUSB_DOWNLOADING flag will be cleared.
         *
         * The firmware loading should not take longer than 5 seconds
         * and thus just timeout if that happens and fail the setup
         * of this device.
         */
	err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
				  TASK_INTERRUPTIBLE,
				  msecs_to_jiffies(5000));
	if (err == -EINTR) {
		BT_ERR("%s: Firmware loading interrupted", hdev->name);
		goto done;
	}

	if (err) {
		BT_ERR("%s: Firmware loading timeout", hdev->name);
		err = -ETIMEDOUT;
		goto done;
	}

	if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
		BT_ERR("%s: Firmware loading failed", hdev->name);
		err = -ENOEXEC;
		goto done;
	}

	rettime = ktime_get();
	delta = ktime_sub(rettime, calltime);
	duration = (unsigned long long) ktime_to_ns(delta) >> 10;

	BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);

done:
	release_firmware(fw);

	if (err < 0)
		return err;

	calltime = ktime_get();

	set_bit(BTUSB_BOOTING, &data->flags);

	skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	kfree_skb(skb);

	/* The bootloader will not indicate when the device is ready. This
         * is done by the operational firmware sending bootup notification.
         *
         * Booting into operational firmware should not take longer than
         * 1 second. However if that happens, then just fail the setup
         * since something went wrong.
         */
	BT_INFO("%s: Waiting for device to boot", hdev->name);

	err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
				  TASK_INTERRUPTIBLE,
				  msecs_to_jiffies(1000));

	if (err == -EINTR) {
		BT_ERR("%s: Device boot interrupted", hdev->name);
		return -EINTR;
	}

	if (err) {
		BT_ERR("%s: Device boot timeout", hdev->name);
		return -ETIMEDOUT;
	}

	rettime = ktime_get();
	delta = ktime_sub(rettime, calltime);
	duration = (unsigned long long) ktime_to_ns(delta) >> 10;

	BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);

	clear_bit(BTUSB_BOOTLOADER, &data->flags);

	/* Once the device is running in operational mode, it needs to apply
         * the device configuration (DDC) parameters.
         *
         * The device can work without DDC parameters, so even if it fails
         * to load the file, no need to fail the setup.
         */
	btintel_load_ddc_config(hdev, fwname);

	/* Set the event mask for Intel specific vendor events. This enables
         * a few extra events that are useful during general operation. It
         * does not enable any debugging related events.
         *
         * The device will function correctly without these events enabled
         * and thus no need to fail the setup.
         */
	btintel_set_event_mask(hdev, false);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 1158 91.98% 9 47.37%
Tedd Ho-Jeong An 55 4.37% 3 15.79%
Johan Hedberg 26 2.07% 3 15.79%
Loic Poulain 15 1.19% 2 10.53%
Bart Van Assche 4 0.32% 1 5.26%
Minjune Kim 1 0.08% 1 5.26%
Total 1259 100.00% 19 100.00%



static int btusb_shutdown_intel(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	long ret;

	/* Some platforms have an issue with BT LED when the interface is
         * down or BT radio is turned off, which takes 5 seconds to BT LED
         * goes off. This command turns off the BT LED immediately.
         */
	skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		ret = PTR_ERR(skb);
		BT_ERR("%s: turning off Intel device LED failed (%ld)",
		       hdev->name, ret);
		return ret;
	}
	kfree_skb(skb);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Tedd Ho-Jeong An 73 100.00% 1 100.00%
Total 73 100.00% 1 100.00%

#ifdef CONFIG_PM
/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */


static int marvell_config_oob_wake(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct device *dev = &data->udev->dev;
	u16 pin, gap, opcode;
	int ret;
	u8 cmd[5];

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

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

	skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
	if (!skb) {
		bt_dev_err(hdev, "%s: No memory\n", __func__);
		return -ENOMEM;
	}

	memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
	hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;

	ret = btusb_send_frame(hdev, skb);
	if (ret) {
		bt_dev_err(hdev, "%s: configuration failed\n", __func__);
		kfree_skb(skb);
		return ret;
	}

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Rajat Jain 229 100.00% 1 100.00%
Total 229 100.00% 1 100.00%

#endif



static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
				    const bdaddr_t *bdaddr)
{
	struct sk_buff *skb;
	u8 buf[8];
	long ret;

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

	skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		ret = PTR_ERR(skb);
		BT_ERR("%s: changing Marvell device address failed (%ld)",
		       hdev->name, ret);
		return ret;
	}
	kfree_skb(skb);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Amitkumar Karwar 74 63.25% 1 50.00%
Marcel Holtmann 43 36.75% 1 50.00%
Total 117 100.00% 2 100.00%



static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
				    const bdaddr_t *bdaddr)
{
	struct sk_buff *skb;
	u8 buf[10];
	long ret;

	buf[0] = 0x01;
	buf[1] = 0x01;
	buf[2] = 0x00;
	buf[3] = sizeof(bdaddr_t);
	memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));

	skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		ret = PTR_ERR(skb);
		BT_ERR("%s: Change address command failed (%ld)",
		       hdev->name, ret);
		return ret;
	}
	kfree_skb(skb);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Toshi Kikuchi 131 100.00% 1 100.00%
Total 131 100.00% 1 100.00%


#define QCA_DFU_PACKET_LEN	4096


#define QCA_GET_TARGET_VERSION	0x09

#define QCA_CHECK_STATUS	0x05

#define QCA_DFU_DOWNLOAD	0x01


#define QCA_SYSCFG_UPDATED	0x40

#define QCA_PATCH_UPDATED	0x80

#define QCA_DFU_TIMEOUT		3000


struct qca_version {
	
__le32	rom_version;
	
__le32	patch_version;
	
__le32	ram_version;
	
__le32	ref_clock;
	
__u8	reserved[4];

} __packed;


struct qca_rampatch_version {
	
__le16	rom_version;
	
__le16	patch_version;

} __packed;


struct qca_device_info {
	
u32	rom_version;
	
u8	rampatch_hdr;	/* length of header in rampatch */
	
u8	nvm_hdr;	/* length of header in NVM */
	
u8	ver_offset;	/* offset of version structure in rampatch */
};


static const struct qca_device_info qca_devices_table[] = {
	{ 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
	{ 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
	{ 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
	{ 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
	{ 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
	{ 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
};



static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
				     void *data, u16 size)
{
	struct btusb_data *btdata = hci_get_drvdata(hdev);
	struct usb_device *udev = btdata->udev;
	int pipe, err;
	u8 *buf;

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	/* Found some of USB hosts have IOT issues with ours so that we should
         * not wait until HCI layer is ready.
         */
	pipe = usb_rcvctrlpipe(udev, 0);
	err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
			      0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
	if (err < 0) {
		BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
		goto done;
	}

	memcpy(data, buf, size);

done:
	kfree(buf);

	return err;
}

Contributors
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Ben Young Tae Kim 107 74.83% 1 50.00%
Petri Gynther 36 25.17% 1 50.00%
Total 143 100.00% 2 100.00%



static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
				       const struct firmware *firmware,
				       size_t hdr_size)
{
	struct btusb_data *btdata = hci_get_drvdata(hdev);
	struct usb_device *udev = btdata->udev;
	size_t count, size, sent = 0;
	int pipe, len, err;
	u8 *buf;

	buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	count = firmware->size;

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

	/* USB patches should go down to controller through USB path
         * because binary format fits to go down through USB channel.
         * USB control path is for patching headers and USB bulk is for
         * patch body.
         */
	pipe = usb_sndctrlpipe(udev, 0);
	err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
			      0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
	if (err < 0) {
		BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
		goto done;
	}

	sent += size;
	count -= size;

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

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

		pipe = usb_sndbulkpipe(udev, 0x02);
		err = usb_bulk_msg(udev, pipe, buf, size, &len,
				   QCA_DFU_TIMEOUT);
		if (err < 0) {
			BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
			       hdev->name, sent, firmware->size, err);
			break;
		}

		if (size != len) {
			BT_ERR("%s: Failed to get bulk buffer", hdev->name);
			err = -EILSEQ;
			break;
		}

		sent  += size;
		count -= size;
	}

done:
	kfree(buf);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Ben Young Tae Kim 280 95.89% 1 50.00%
Marcel Holtmann 12 4.11% 1 50.00%
Total 292 100.00% 2 100.00%



static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
					 struct qca_version *ver,
					 const struct qca_device_info *info)
{
	struct qca_rampatch_version *rver;
	const struct firmware *fw;
	u32 ver_rom, ver_patch;
	u16 rver_rom, rver_patch;
	char fwname[64];
	int err;

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

	snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);

	err = request_firmware(&fw, fwname, &hdev->dev);
	if (err) {
		BT_ERR("%s: failed to request rampatch file: %s (%d)",
		       hdev->name, fwname, err);
		return err;
	}

	BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);

	rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
	rver_rom = le16_to_cpu(rver->rom_version);
	rver_patch = le16_to_cpu(rver->patch_version);

	BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
		"build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
		ver_patch);

	if (rver_rom != ver_rom || rver_patch <= ver_patch) {
		BT_ERR("%s: rampatch file version did not match with firmware",
		       hdev->name);
		err = -EINVAL;
		goto done;
	}

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

done:
	release_firmware(fw);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 228 96.20% 1 50.00%
Ben Young Tae Kim 9 3.80% 1 50.00%
Total 237 100.00% 2 100.00%



static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
				    struct qca_version *ver,
				    const struct qca_device_info *info)
{
	const struct firmware *fw;
	char fwname[64];
	int err;

	snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
		 le32_to_cpu(ver->rom_version));

	err = request_firmware(&fw, fwname, &hdev->dev);
	if (err) {
		BT_ERR("%s: failed to request NVM file: %s (%d)",
		       hdev->name, fwname, err);
		return err;
	}

	BT_INFO("%s: using NVM file: %s", hdev->name, fwname);

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

	release_firmware(fw);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Ben Young Tae Kim 98 78.40% 1 50.00%
Marcel Holtmann 27 21.60% 1 50.00%
Total 125 100.00% 2 100.00%



static int btusb_setup_qca(struct hci_dev *hdev)
{
	const struct qca_device_info *info = NULL;
	struct qca_version ver;
	u32 ver_rom;
	u8 status;
	int i, err;

	err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
					sizeof(ver));
	if (err < 0)
		return err;

	ver_rom = le32_to_cpu(ver.rom_version);
	for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
		if (ver_rom == qca_devices_table[i].rom_version)
			info = &qca_devices_table[i];
	}
	if (!info) {
		BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
		       ver_rom);
		return -ENODEV;
	}

	err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
					sizeof(status));
	if (err < 0)
		return err;

	if (!(status & QCA_PATCH_UPDATED)) {
		err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
		if (err < 0)
			return err;
	}

	if (!(status & QCA_SYSCFG_UPDATED)) {
		err = btusb_setup_qca_load_nvm(hdev, &ver, info);
		if (err < 0)
			return err;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 186 84.16% 1 33.33%
Ben Young Tae Kim 35 15.84% 2 66.67%
Total 221 100.00% 3 100.00%

#ifdef CONFIG_BT_HCIBTUSB_BCM


static inline int __set_diag_interface(struct hci_dev *hdev)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct usb_interface *intf = data->diag;
	int i;

	if (!data->diag)
		return -ENODEV;

	data->diag_tx_ep = NULL;
	data->diag_rx_ep = NULL;

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

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

		if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
			data->diag_tx_ep = ep_desc;
			continue;
		}

		if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
			data->diag_rx_ep = ep_desc;
			continue;
		}
	}

	if (!data->diag_tx_ep || !data->diag_rx_ep) {
		BT_ERR("%s invalid diagnostic descriptors", hdev->name);
		return -ENODEV;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 139 82.25% 2 66.67%
Ben Young Tae Kim 30 17.75% 1 33.33%
Total 169 100.00% 3 100.00%



static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct sk_buff *skb;
	struct urb *urb;
	unsigned int pipe;

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

	urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!urb)
		return ERR_PTR(-ENOMEM);

	skb = bt_skb_alloc(2, GFP_KERNEL);
	if (!skb) {
		usb_free_urb(urb);
		return ERR_PTR(-ENOMEM);
	}

	*skb_put(skb, 1) = 0xf0;
	*skb_put(skb, 1) = enable;

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

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

	skb->dev = (void *)hdev;

	return urb;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 125 71.84% 1 25.00%
Ben Young Tae Kim 26 14.94% 2 50.00%
Toshi Kikuchi 23 13.22% 1 25.00%
Total 174 100.00% 4 100.00%



static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct urb *urb;

	if (!data->diag)
		return -ENODEV;

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

	urb = alloc_diag_urb(hdev, enable);
	if (IS_ERR(urb))
		return PTR_ERR(urb);

	return submit_or_queue_tx_urb(hdev, urb);
}
Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 56 64.37% 1 33.33%
Ben Young Tae Kim 16 18.39% 1 33.33%
Toshi Kikuchi 15 17.24% 1 33.33%
Total 87 100.00% 3 100.00%

#endif

#ifdef CONFIG_PM


static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
{
	struct btusb_data *data = priv;

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

	/* Disable only if not already disabled (keep it balanced) */
	if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
		disable_irq_nosync(irq);
		disable_irq_wake(irq);
	}
	return IRQ_HANDLED;
}

Contributors
Person Tokens Prop Commits CommitProp
Rajat Jain 60 95.24% 1 50.00%
Jeffy Chen 3 4.76% 1 50.00%
Total 63 100.00% 2 100.00%


static const struct of_device_id btusb_match_table[] = {
	{ .compatible = "usb1286,204e" },
	{ }
};
MODULE_DEVICE_TABLE(of, btusb_match_table);

/* Use an oob wakeup pin? */


static int btusb_config_oob_wake(struct hci_dev *hdev)
{
	struct btusb_data *data = hci_get_drvdata(hdev);
	struct device *dev = &data->udev->dev;
	int irq, ret;

	clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);

	if (!of_match_device(btusb_match_table, dev))
		return 0;

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

	ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
			       0, "OOB Wake-on-BT", data);
	if (ret) {
		bt_dev_err(hdev, "%s: IRQ request failed", __func__);
		return ret;
	}

	ret = device_init_wakeup(dev, true);
	if (ret) {
		bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
		return ret;
	}

	data->oob_wake_irq = irq;
	disable_irq(irq);
	bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Rajat Jain 181 100.00% 1 100.00%
Total 181 100.00% 1 100.00%

#endif



static int btusb_probe(struct usb_interface *intf,
		       const struct usb_device_id *id)
{
	struct usb_endpoint_descriptor *ep_desc;
	struct btusb_data *data;
	struct hci_dev *hdev;
	unsigned ifnum_base;
	int i, err;

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

	/* interface numbers are hardcoded in the spec */
	if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
		if (!(id->driver_info & BTUSB_IFNUM_2))
			return -ENODEV;
		if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
			return -ENODEV;
	}

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

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

		match = usb_match_id(intf, blacklist_table);
		if (match)
			id = match;
	}

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

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

		/* Old firmware would otherwise let ath3k driver load
                 * patch and sysconfig files */
		if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
			return -ENODEV;
	}

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

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

		if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
			data->intr_ep = ep_desc;
			continue;
		}

		if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
			data->bulk_tx_ep = ep_desc;
			continue;
		}

		if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
			data->bulk_rx_ep = ep_desc;
			continue;
		}
	}

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

	if (id->driver_info & BTUSB_AMP) {
		data->cmdreq_type = USB_TYPE_CLASS | 0x01;
		data->cmdreq = 0x2b;
	} else {
		data->cmdreq_type = USB_TYPE_CLASS;
		data->cmdreq = 0x00;
	}

	data->udev = interface_to_usbdev(intf);
	data->intf = intf;

	INIT_WORK(&data->work, btusb_work);
	INIT_WORK(&data->waker, btusb_waker);
	init_usb_anchor(&data->deferred);
	init_usb_anchor(&data->tx_anchor);
	spin_lock_init(&data->txlock);

	init_usb_anchor(&data->intr_anchor);
	init_usb_anchor(&data->bulk_anchor);
	init_usb_anchor(&data->isoc_anchor);
	init_usb_anchor(&data->diag_anchor);
	spin_lock_init(&data->rxlock);

	if (id->driver_info & BTUSB_INTEL_NEW) {
		data->recv_event = btusb_recv_event_intel;
		data->recv_bulk = btusb_recv_bulk_intel;
		set_bit(BTUSB_BOOTLOADER, &data->flags);
	} else {
		data->recv_event = hci_recv_frame;
		data->recv_bulk = btusb_recv_bulk;
	}

	hdev = hci_alloc_dev();
	if (!hdev)
		return -ENOMEM;

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

	if (id->driver_info & BTUSB_AMP)
		hdev->dev_type = HCI_AMP;
	else
		hdev->dev_type = HCI_PRIMARY;

	data->hdev = hdev;

	SET_HCIDEV_DEV(hdev, &intf->dev);

	hdev->open   = btusb_open;
	hdev->close  = btusb_close;
	hdev->flush  = btusb_flush;
	hdev->send   = btusb_send_frame;
	hdev->notify = btusb_notify;

#ifdef CONFIG_PM
	err = btusb_config_oob_wake(hdev);
	if (err)
		goto out_free_dev;

	/* Marvell devices may need a specific chip configuration */
	if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
		err = marvell_config_oob_wake(hdev);
		if (err)
			goto out_free_dev;
	}
#endif
	if (id->driver_info & BTUSB_CW6622)
		set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);

	if (id->driver_info & BTUSB_BCM2045)
		set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);

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

#ifdef CONFIG_BT_HCIBTUSB_BCM
	if (id->driver_info & BTUSB_BCM_PATCHRAM) {
		hdev->manufacturer = 15;
		hdev->setup = btbcm_setup_patchram;
		hdev->set_diag = btusb_bcm_set_diag;
		hdev->set_bdaddr = btbcm_set_bdaddr;

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

	if (id->driver_info & BTUSB_BCM_APPLE) {
		hdev->manufacturer = 15;
		hdev->setup = btbcm_setup_apple;
		hdev->set_diag = btusb_bcm_set_diag;

		/* Broadcom LM_DIAG Interface numbers are hardcoded */
		data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
	}
#endif

	if (id->driver_info & BTUSB_INTEL) {
		hdev->manufacturer = 2;
		hdev->setup = btusb_setup_intel;
		hdev->shutdown = btusb_shutdown_intel;
		hdev->set_diag = btintel_set_diag_mfg;
		hdev->set_bdaddr = btintel_set_bdaddr;
		set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
		set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
		set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
	}

	if (id->driver_info & BTUSB_INTEL_NEW) {
		hdev->manufacturer = 2;
		hdev->send = btusb_send_frame_intel;
		hdev->setup = btusb_setup_intel_new;
		hdev->hw_error = btintel_hw_error;
		hdev->set_diag = btintel_set_diag;
		hdev->set_bdaddr = btintel_set_bdaddr;
		set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
		set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
	}

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

	if (id->driver_info & BTUSB_SWAVE) {
		set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
		set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
	}

	if (id->driver_info & BTUSB_INTEL_BOOT) {
		hdev->manufacturer = 2;
		set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
	}

	if (id->driver_info & BTUSB_ATH3012) {
		hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
		set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
		set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
	}

	if (id->driver_info & BTUSB_QCA_ROME) {
		data->setup_on_usb = btusb_setup_qca;
		hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
	}

#ifdef CONFIG_BT_HCIBTUSB_RTL
	if (id->driver_info & BTUSB_REALTEK) {
		hdev->setup = btrtl_setup_realtek;

		/* Realtek devices lose their updated firmware over suspend,
                 * but the USB hub doesn't notice any status change.
                 * Explicitly request a device reset on resume.
                 */
		set_bit(BTUSB_RESET_RESUME, &data->flags);
	}
#endif

	if (id->driver_info & BTUSB_AMP) {
		/* AMP controllers do not support SCO packets */
		data->isoc = NULL;
	} else {
		/* Interface orders are hardcoded in the specification */
		data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
	}

	if (!reset)
		set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);

	if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
		if (!disable_scofix)
			set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
	}

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

	if (id->driver_info & BTUSB_DIGIANSWER) {
		data->cmdreq_type = USB_TYPE_VENDOR;
		set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
	}

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

		/* Old firmware would otherwise execute USB reset */
		if (bcdDevice < 0x117)
			set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);

		/* Fake CSR devices with broken commands */
		if (bcdDevice <= 0x100 || bcdDevice == 0x134)
			hdev->setup = btusb_setup_csr;

		set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
	}

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

		/* New sniffer firmware has crippled HCI interface */
		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
			set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
	}

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

	if (data->isoc) {
		err = usb_driver_claim_interface(&btusb_driver,
						 data->isoc, data);
		if (err < 0)
			goto out_free_dev;
	}

#ifdef CONFIG_BT_HCIBTUSB_BCM
	if (data->diag) {
		if (!usb_driver_claim_interface(&btusb_driver,
						data->diag, data))
			__set_diag_interface(hdev);
		else
			data->diag = NULL;
	}
#endif

	err = hci_register_dev(hdev);
	if (err < 0)
		goto out_free_dev;

	usb_set_intfdata(intf, data);

	return 0;

out_free_dev:
	hci_free_dev(hdev);
	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 1045 70.13% 36 62.07%
Petri Gynther 118 7.92% 1 1.72%
Tedd Ho-Jeong An 75 5.03% 2 3.45%
Rajat Jain 67 4.50% 3 5.17%
Jakub Pawlowski 52 3.49% 5 8.62%
Daniel Drake 26 1.74% 2 3.45%
Ben Young Tae Kim 22 1.48% 1 1.72%
Oliver Neukum 22 1.48% 1 1.72%
Szymon Janc 21 1.41% 2 3.45%
Amitkumar Karwar 14 0.94% 1 1.72%
Toshi Kikuchi 14 0.94% 1 1.72%
Carlo Caione 6 0.40% 1 1.72%
David Herrmann 4 0.27% 1 1.72%
Johan Hedberg 4 0.27% 1 1.72%
Total 1490 100.00% 58 100.00%



static void btusb_disconnect(struct usb_interface *intf)
{
	struct btusb_data *data = usb_get_intfdata(intf);
	struct hci_dev *hdev;

	BT_DBG("intf %p", intf);

	if (!data)
		return;

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

	if (data->isoc)
		usb_set_intfdata(data->isoc, NULL);

	if (data->diag)
		usb_set_intfdata(data->diag, NULL);

	hci_unregister_dev(hdev);

	if (intf == data->intf) {
		if (data->isoc)
			usb_driver_release_interface(&btusb_driver, data->isoc);
		if (data->diag)
			usb_driver_release_interface(&btusb_driver, data->diag);
	} else if (intf == data->isoc) {
		if (data->diag)
			usb_driver_release_interface(&btusb_driver, data->diag);
		usb_driver_release_interface(&btusb_driver, data->intf);
	} else if (intf == data->diag) {
		usb_driver_release_interface(&btusb_driver, data->intf);
		if (data->isoc)
			usb_driver_release_interface(&btusb_driver, data->isoc);
	}

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

	hci_free_dev(hdev);
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 210 92.11% 4 80.00%
Rajat Jain 18 7.89% 1 20.00%
Total 228 100.00% 5 100.00%

#ifdef CONFIG_PM


static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
{
	struct btusb_data *data = usb_get_intfdata(intf);

	BT_DBG("intf %p", intf);

	if (data->suspend_count++)
		return 0;

	spin_lock_irq(&data->txlock);
	if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
		set_bit(BTUSB_SUSPENDING, &data->flags);
		spin_unlock_irq(&data->txlock);
	} else {
		spin_unlock_irq(&data->txlock);
		data->suspend_count--;
		return -EBUSY;
	}

	cancel_work_sync(&data->work);

	btusb_stop_traffic(data);
	usb_kill_anchored_urbs(&data->tx_anchor);

	if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
		set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
		enable_irq_wake(data->oob_wake_irq);
		enable_irq(data->oob_wake_irq);
	}

	/* Optionally request a device reset on resume, but only when
         * wakeups are disabled. If wakeups are enabled we assume the
         * device will stay powered up throughout suspend.
         */
	if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
	    !device_may_wakeup(&data->udev->dev))
		data->udev->reset_resume = 1;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 74 36.82% 1 16.67%
Oliver Neukum 49 24.38% 1 16.67%
Rajat Jain 42 20.90% 1 16.67%
Daniel Drake 32 15.92% 1 16.67%
Alan Stern 4 1.99% 2 33.33%
Total 201 100.00% 6 100.00%



static void play_deferred(struct btusb_data *data)
{
	struct urb *urb;
	int err;

	while ((urb = usb_get_from_anchor(&data->deferred))) {
		err = usb_submit_urb(urb, GFP_ATOMIC);
		if (err < 0)
			break;

		data->tx_in_flight++;
	}
	usb_scuttle_anchored_urbs(&data->deferred);
}

Contributors
Person Tokens Prop Commits CommitProp
Oliver Neukum 64 100.00% 1 100.00%
Total 64 100.00% 1 100.00%



static int btusb_resume(struct usb_interface *intf)
{
	struct btusb_data *data = usb_get_intfdata(intf);
	struct hci_dev *hdev = data->hdev;
	int err = 0;

	BT_DBG("intf %p", intf);

	if (--data->suspend_count)
		return 0;

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

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

	if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
		err = btusb_submit_intr_urb(hdev, GFP_NOIO);
		if (err < 0) {
			clear_bit(BTUSB_INTR_RUNNING, &data->flags);
			goto failed;
		}
	}

	if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
		err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
		if (err < 0) {
			clear_bit(BTUSB_BULK_RUNNING, &data->flags);
			goto failed;
		}

		btusb_submit_bulk_urb(hdev, GFP_NOIO);
	}

	if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
		if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
			clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
		else
			btusb_submit_isoc_urb(hdev, GFP_NOIO);
	}

	spin_lock_irq(&data->txlock);
	play_deferred(data);
	clear_bit(BTUSB_SUSPENDING, &data->flags);
	spin_unlock_irq(&data->txlock);
	schedule_work(&data->work);

	return 0;

failed:
	usb_scuttle_anchored_urbs(&data->deferred);
done:
	spin_lock_irq(&data->txlock);
	clear_bit(BTUSB_SUSPENDING, &data->flags);
	spin_unlock_irq(&data->txlock);

	return err;
}
Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 198 62.26% 2 50.00%
Oliver Neukum 91 28.62% 1 25.00%
Rajat Jain 29 9.12% 1 25.00%
Total 318 100.00% 4 100.00%

#endif


static struct usb_driver btusb_driver = {
	.name		= "btusb",
	.probe		= btusb_probe,
	.disconnect	= btusb_disconnect,
#ifdef CONFIG_PM
	.suspend	= btusb_suspend,
	.resume		= btusb_resume,
#endif
	.id_table	= btusb_table,
	.supports_autosuspend = 1,
	.disable_hub_initiated_lpm = 1,
};


module_usb_driver(btusb_driver);

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

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

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

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);

MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Overall Contributors
Person Tokens Prop Commits CommitProp
Marcel Holtmann 10294 65.23% 70 30.30%
Tedd Ho-Jeong An 1082 6.86% 7 3.03%
Ben Young Tae Kim 827 5.24% 3 1.30%
Rajat Jain 677 4.29% 3 1.30%
Oliver Neukum 450 2.85% 6 2.60%
Daniel Drake 302 1.91% 3 1.30%
Dmitry Tunin 229 1.45% 16 6.93%
Toshi Kikuchi 183 1.16% 1 0.43%
Petri Gynther 162 1.03% 1 0.43%
Amitkumar Karwar 137 0.87% 2 0.87%
AceLan Kao 98 0.62% 8 3.46%
Andy Shevchenko 83 0.53% 2 0.87%
Loic Poulain 58 0.37% 3 1.30%
Wen-chien Jesse Sung 56 0.35% 5 2.16%
Paul Bolle 54 0.34% 2 0.87%
Yu-Chen (Al) Cho 52 0.33% 4 1.73%
Jakub Pawlowski 52 0.33% 5 2.16%
Johan Hedberg 46 0.29% 4 1.73%
Champion Chen 42 0.27% 1 0.43%
Sujith Manoharan 37 0.23% 3 1.30%
David Herrmann 37 0.23% 1 0.43%
Anantha Krishnan 28 0.18% 2 0.87%
Szymon Janc 27 0.17% 2 0.87%
Gustavo Fernando Padovan 25 0.16% 3 1.30%
Bala Shanmugam 25 0.16% 2 0.87%
Peng Chen 25 0.16% 2 0.87%
Jurgen Kramer 24 0.15% 2 0.87%
Ming Lei 24 0.15% 2 0.87%
Kuba Pawlak 23 0.15% 2 0.87%
Carlo Caione 22 0.14% 1 0.43%
Stefan Seyfried 21 0.13% 1 0.43%
Nobuhiro Iwamatsu 20 0.13% 2 0.87%
Christoph Haag 19 0.12% 1 0.43%
Matej Dubovy 19 0.12% 1 0.43%
Peter Poklop 15 0.10% 1 0.43%
Santtu Rekilä 15 0.10% 1 0.43%
Ethan Hsieh 15 0.10% 1 0.43%
Yvain THONNART 14 0.09% 1 0.43%
Janne Heikkinen 14 0.09% 1 0.43%
Kai-Heng Feng 14 0.09% 1 0.43%
Mohammed Habibulla 14 0.09% 1 0.43%
Vincent Zwanenburg 14 0.09% 1 0.43%
Ken O'Brien 14 0.09% 1 0.43%
Gabriel 14 0.09% 1 0.43%
Lauro Costa 14 0.09% 1 0.43%
Henrik Rydberg 14 0.09% 1 0.43%
Alexander Ploumistos 14 0.09% 1 0.43%
Michael Gruetzner 14 0.09% 1 0.43%
Josh Boyer 13 0.08% 1 0.43%
Yevgeniy Melnichuk 13 0.08% 1 0.43%
Bing Zhao 13 0.08% 1 0.43%
Daniel Schaal 13 0.08% 1 0.43%
Sergio Cambra 12 0.08% 1 0.43%
Keng-Yu Lin 12 0.08% 1 0.43%
Sunguk Lee 12 0.08% 1 0.43%
Marcos Chaparro 12 0.08% 1 0.43%
Giancarlo Formicuccia 12 0.08% 1 0.43%
Marek Vašut 12 0.08% 1 0.43%
Marco Piazza 12 0.08% 1 0.43%
Noguchi Kazutosi 12 0.08% 1 0.43%
Ricardo Mendoza 12 0.08% 1 0.43%
Andy Ross 12 0.08% 1 0.43%
Eran 12 0.08% 1 0.43%
Thomas Loo 12 0.08% 1 0.43%
Chan-yeol Park 11 0.07% 1 0.43%
Edgar (gimli) Hucek 10 0.06% 1 0.43%
Marc-Antoine Perennou 10 0.06% 1 0.43%
Cyril Lacoux 10 0.06% 1 0.43%
Pieter-Augustijn Van Malleghem 10 0.06% 1 0.43%
João Paulo Rechi Vita 8 0.05% 1 0.43%
Jeffy Chen 6 0.04% 1 0.43%
Steven.Li 5 0.03% 1 0.43%
Rick Dunn 5 0.03% 1 0.43%
Heinrich Siebmanns 5 0.03% 1 0.43%
Sarah Sharp 5 0.03% 1 0.43%
Bart Van Assche 4 0.03% 1 0.43%
Steven Harms 4 0.03% 1 0.43%
Alan Stern 4 0.03% 2 0.87%
John W. Linville 4 0.03% 1 0.43%
James M. Leddy 3 0.02% 1 0.43%
Linus Torvalds 3 0.02% 1 0.43%
Rusty Russell 3 0.02% 1 0.43%
Mikel Astiz 3 0.02% 1 0.43%
Jesper Juhl 2 0.01% 1 0.43%
Greg Kroah-Hartman 2 0.01% 1 0.43%
Vikram Kandukuri 2 0.01% 1 0.43%
Minjune Kim 2 0.01% 1 0.43%
Aleksei Volkov 1 0.01% 1 0.43%
Manoj Iyer 1 0.01% 1 0.43%
Shailendra Verma 1 0.01% 1 0.43%
Don Zickus 1 0.01% 1 0.43%
Total 15780 100.00% 231 100.00%
Directory: drivers/bluetooth

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Marcel Holtmann	75	100.00%	1	100.00%
Total	75	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.12 drivers/bluetooth/btusb.c

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