// SPDX-License-Identifier: GPL-2.0-or-later/* * Copyright (c) 2008-2009 Atheros Communications Inc. */ #include <linux/module.h>#include <linux/kernel.h>#include <linux/init.h>#include <linux/slab.h>#include <linux/types.h>#include <linux/errno.h>#include <linux/firmware.h>#include <linux/usb.h>#include <linux/unaligned.h>#include <net/bluetooth/bluetooth.h> #define VERSION "1.0"#define ATH3K_FIRMWARE	"ath3k-1.fw" #define ATH3K_DNLOAD				0x01#define ATH3K_GETSTATE				0x05#define ATH3K_SET_NORMAL_MODE			0x07#define ATH3K_GETVERSION			0x09#define USB_REG_SWITCH_VID_PID			0x0a #define ATH3K_MODE_MASK				0x3F#define ATH3K_NORMAL_MODE			0x0E #define ATH3K_PATCH_UPDATE			0x80#define ATH3K_SYSCFG_UPDATE			0x40 #define ATH3K_XTAL_FREQ_26M			0x00#define ATH3K_XTAL_FREQ_40M			0x01#define ATH3K_XTAL_FREQ_19P2			0x02#define ATH3K_NAME_LEN				0xFF struct ath3k_version {	__le32	rom_version;	__le32	build_version;	__le32	ram_version;	__u8	ref_clock;	__u8	reserved[7];} __packed; static const struct usb_device_id ath3k_table[] = {	/* Atheros AR3011 */	{ USB_DEVICE(0x0CF3, 0x3000) }, 	/* Atheros AR3011 with sflash firmware*/	{ USB_DEVICE(0x0489, 0xE027) },	{ USB_DEVICE(0x0489, 0xE03D) },	{ USB_DEVICE(0x04F2, 0xAFF1) },	{ USB_DEVICE(0x0930, 0x0215) },	{ USB_DEVICE(0x0CF3, 0x3002) },	{ USB_DEVICE(0x0CF3, 0xE019) },	{ USB_DEVICE(0x13d3, 0x3304) }, 	/* Atheros AR9285 Malbec with sflash firmware */	{ USB_DEVICE(0x03F0, 0x311D) }, 	/* Atheros AR3012 with sflash firmware*/	{ USB_DEVICE(0x0489, 0xe04d) },	{ USB_DEVICE(0x0489, 0xe04e) },	{ USB_DEVICE(0x0489, 0xe057) },	{ USB_DEVICE(0x0489, 0xe056) },	{ USB_DEVICE(0x0489, 0xe05f) },	{ USB_DEVICE(0x0489, 0xe076) },	{ USB_DEVICE(0x0489, 0xe078) },	{ USB_DEVICE(0x0489, 0xe095) },	{ USB_DEVICE(0x04c5, 0x1330) },	{ USB_DEVICE(0x04CA, 0x3004) },	{ USB_DEVICE(0x04CA, 0x3005) },	{ USB_DEVICE(0x04CA, 0x3006) },	{ USB_DEVICE(0x04CA, 0x3007) },	{ USB_DEVICE(0x04CA, 0x3008) },	{ USB_DEVICE(0x04CA, 0x300b) },	{ USB_DEVICE(0x04CA, 0x300d) },	{ USB_DEVICE(0x04CA, 0x300f) },	{ USB_DEVICE(0x04CA, 0x3010) },	{ USB_DEVICE(0x04CA, 0x3014) },	{ USB_DEVICE(0x04CA, 0x3018) },	{ USB_DEVICE(0x0930, 0x0219) },	{ USB_DEVICE(0x0930, 0x021c) },	{ USB_DEVICE(0x0930, 0x0220) },	{ USB_DEVICE(0x0930, 0x0227) },	{ USB_DEVICE(0x0b05, 0x17d0) },	{ USB_DEVICE(0x0CF3, 0x0036) },	{ USB_DEVICE(0x0CF3, 0x3004) },	{ USB_DEVICE(0x0CF3, 0x3008) },	{ USB_DEVICE(0x0CF3, 0x311D) },	{ USB_DEVICE(0x0CF3, 0x311E) },	{ USB_DEVICE(0x0CF3, 0x311F) },	{ USB_DEVICE(0x0cf3, 0x3121) },	{ USB_DEVICE(0x0CF3, 0x817a) },	{ USB_DEVICE(0x0CF3, 0x817b) },	{ USB_DEVICE(0x0cf3, 0xe003) },	{ USB_DEVICE(0x0CF3, 0xE004) },	{ USB_DEVICE(0x0CF3, 0xE005) },	{ USB_DEVICE(0x0CF3, 0xE006) },	{ USB_DEVICE(0x13d3, 0x3362) },	{ USB_DEVICE(0x13d3, 0x3375) },	{ USB_DEVICE(0x13d3, 0x3393) },	{ USB_DEVICE(0x13d3, 0x3395) },	{ USB_DEVICE(0x13d3, 0x3402) },	{ USB_DEVICE(0x13d3, 0x3408) },	{ USB_DEVICE(0x13d3, 0x3423) },	{ USB_DEVICE(0x13d3, 0x3432) },	{ USB_DEVICE(0x13d3, 0x3472) },	{ USB_DEVICE(0x13d3, 0x3474) },	{ USB_DEVICE(0x13d3, 0x3487) },	{ USB_DEVICE(0x13d3, 0x3490) }, 	/* Atheros AR5BBU12 with sflash firmware */	{ USB_DEVICE(0x0489, 0xE02C) }, 	/* Atheros AR5BBU22 with sflash firmware */	{ USB_DEVICE(0x0489, 0xE036) },	{ USB_DEVICE(0x0489, 0xE03C) }, 	{ }	/* Terminating entry */}; MODULE_DEVICE_TABLE(usb, ath3k_table); #define BTUSB_ATH3012		0x80/* This table is to load patch and sysconfig files * for AR3012 */static const struct usb_device_id ath3k_blist_tbl[] = {	/* Atheros AR3012 with sflash firmware*/	{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },	{ USB_DEVICE(0x0489, 0xe04d), .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, 0xe004), .driver_info = BTUSB_ATH3012 },	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },	{ USB_DEVICE(0x0cf3, 0xe003), .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 AR5BBU22 with sflash firmware */	{ USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },	{ USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 }, 	{ }	/* Terminating entry */}; static inline void ath3k_log_failed_loading(int err, int len, int size,					    int count){	BT_ERR("Firmware loading err = %d, len = %d, size = %d, count = %d",	       err, len, size, count);} #define USB_REQ_DFU_DNLOAD	1#define BULK_SIZE		4096#define FW_HDR_SIZE		20#define TIMEGAP_USEC_MIN	50#define TIMEGAP_USEC_MAX	100 static int ath3k_load_firmware(struct usb_device *udev,			       const struct firmware *firmware){	u8 *send_buf;	int len = 0;	int err, pipe, size, sent = 0;	int count = firmware->size; 	BT_DBG("udev %p", udev); 	send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);	if (!send_buf) {		BT_ERR("Can't allocate memory chunk for firmware");		return -ENOMEM;	} 	err = usb_control_msg_send(udev, 0, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,				   0, 0, firmware->data, FW_HDR_SIZE,				   USB_CTRL_SET_TIMEOUT, GFP_KERNEL);	if (err) {		BT_ERR("Can't change to loading configuration err");		goto error;	}	sent += FW_HDR_SIZE;	count -= FW_HDR_SIZE; 	pipe = usb_sndbulkpipe(udev, 0x02); 	while (count) {		/* workaround the compatibility issue with xHCI controller*/		usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX); 		size = min_t(uint, count, BULK_SIZE);		memcpy(send_buf, firmware->data + sent, size); 		err = usb_bulk_msg(udev, pipe, send_buf, size,				   &len, 3000); 		if (err || len != size) {			ath3k_log_failed_loading(err, len, size, count);			goto error;		} 		sent  += size;		count -= size;	} error:	kfree(send_buf);	return err;} static int ath3k_get_state(struct usb_device *udev, unsigned char *state){	return usb_control_msg_recv(udev, 0, ATH3K_GETSTATE,				    USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,				    state, 1, USB_CTRL_SET_TIMEOUT,				    GFP_KERNEL);} static int ath3k_get_version(struct usb_device *udev,			     struct ath3k_version *version){	return usb_control_msg_recv(udev, 0, ATH3K_GETVERSION,				    USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,				    version, sizeof(*version), USB_CTRL_SET_TIMEOUT,				    GFP_KERNEL);} static int ath3k_load_fwfile(struct usb_device *udev,			     const struct firmware *firmware){	u8 *send_buf;	int len = 0;	int err, pipe, size, count, sent = 0;	int ret; 	count = firmware->size; 	send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);	if (!send_buf) {		BT_ERR("Can't allocate memory chunk for firmware");		return -ENOMEM;	} 	size = min_t(uint, count, FW_HDR_SIZE); 	ret = usb_control_msg_send(udev, 0, ATH3K_DNLOAD, USB_TYPE_VENDOR, 0, 0,				   firmware->data, size, USB_CTRL_SET_TIMEOUT,				   GFP_KERNEL);	if (ret) {		BT_ERR("Can't change to loading configuration err");		kfree(send_buf);		return ret;	} 	sent += size;	count -= size; 	pipe = usb_sndbulkpipe(udev, 0x02); 	while (count) {		/* workaround the compatibility issue with xHCI controller*/		usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX); 		size = min_t(uint, count, BULK_SIZE);		memcpy(send_buf, firmware->data + sent, size); 		err = usb_bulk_msg(udev, pipe, send_buf, size,				   &len, 3000);		if (err || len != size) {			ath3k_log_failed_loading(err, len, size, count);			kfree(send_buf);			return err;		}		sent  += size;		count -= size;	} 	kfree(send_buf);	return 0;} static void ath3k_switch_pid(struct usb_device *udev){	usb_control_msg_send(udev, 0, USB_REG_SWITCH_VID_PID, USB_TYPE_VENDOR,			     0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT, GFP_KERNEL);} static int ath3k_set_normal_mode(struct usb_device *udev){	unsigned char fw_state;	int ret; 	ret = ath3k_get_state(udev, &fw_state);	if (ret) {		BT_ERR("Can't get state to change to normal mode err");		return ret;	} 	if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {		BT_DBG("firmware was already in normal mode");		return 0;	} 	return usb_control_msg_send(udev, 0, ATH3K_SET_NORMAL_MODE,				    USB_TYPE_VENDOR, 0, 0, NULL, 0,				    USB_CTRL_SET_TIMEOUT, GFP_KERNEL);} static int ath3k_load_patch(struct usb_device *udev){	unsigned char fw_state;	char filename[ATH3K_NAME_LEN];	const struct firmware *firmware;	struct ath3k_version fw_version;	__u32 pt_rom_version, pt_build_version;	int ret; 	ret = ath3k_get_state(udev, &fw_state);	if (ret) {		BT_ERR("Can't get state to change to load ram patch err");		return ret;	} 	if (fw_state & ATH3K_PATCH_UPDATE) {		BT_DBG("Patch was already downloaded");		return 0;	} 	ret = ath3k_get_version(udev, &fw_version);	if (ret) {		BT_ERR("Can't get version to change to load ram patch err");		return ret;	} 	snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",		 le32_to_cpu(fw_version.rom_version)); 	ret = request_firmware(&firmware, filename, &udev->dev);	if (ret < 0) {		BT_ERR("Patch file not found %s", filename);		return ret;	} 	pt_rom_version = get_unaligned_le32(firmware->data +					    firmware->size - 8);	pt_build_version = get_unaligned_le32(firmware->data +					      firmware->size - 4); 	if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||	    pt_build_version <= le32_to_cpu(fw_version.build_version)) {		BT_ERR("Patch file version did not match with firmware");		release_firmware(firmware);		return -EINVAL;	} 	ret = ath3k_load_fwfile(udev, firmware);	release_firmware(firmware); 	return ret;} static int ath3k_load_syscfg(struct usb_device *udev){	unsigned char fw_state;	char filename[ATH3K_NAME_LEN];	const struct firmware *firmware;	struct ath3k_version fw_version;	int clk_value, ret; 	ret = ath3k_get_state(udev, &fw_state);	if (ret) {		BT_ERR("Can't get state to change to load configuration err");		return -EBUSY;	} 	ret = ath3k_get_version(udev, &fw_version);	if (ret) {		BT_ERR("Can't get version to change to load ram patch err");		return ret;	} 	switch (fw_version.ref_clock) {	case ATH3K_XTAL_FREQ_26M:		clk_value = 26;		break;	case ATH3K_XTAL_FREQ_40M:		clk_value = 40;		break;	case ATH3K_XTAL_FREQ_19P2:		clk_value = 19;		break;	default:		clk_value = 0;		break;	} 	snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",		 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu"); 	ret = request_firmware(&firmware, filename, &udev->dev);	if (ret < 0) {		BT_ERR("Configuration file not found %s", filename);		return ret;	} 	ret = ath3k_load_fwfile(udev, firmware);	release_firmware(firmware); 	return ret;} static int ath3k_probe(struct usb_interface *intf,		       const struct usb_device_id *id){	const struct firmware *firmware;	struct usb_device *udev = interface_to_usbdev(intf);	int ret; 	BT_DBG("intf %p id %p", intf, id); 	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)		return -ENODEV; 	/* match device ID in ath3k blacklist table */	if (!id->driver_info) {		const struct usb_device_id *match; 		match = usb_match_id(intf, ath3k_blist_tbl);		if (match)			id = match;	} 	/* load patch and sysconfig files for AR3012 */	if (id->driver_info & BTUSB_ATH3012) {		/* New firmware with patch and sysconfig files already loaded */		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)			return -ENODEV; 		ret = ath3k_load_patch(udev);		if (ret < 0) {			BT_ERR("Loading patch file failed");			return ret;		}		ret = ath3k_load_syscfg(udev);		if (ret < 0) {			BT_ERR("Loading sysconfig file failed");			return ret;		}		ret = ath3k_set_normal_mode(udev);		if (ret) {			BT_ERR("Set normal mode failed");			return ret;		}		ath3k_switch_pid(udev);		return 0;	} 

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