[mirror_ubuntu-artful-kernel.git] / drivers / bluetooth / btbcm.c

/*
 *
 *  Bluetooth support for Broadcom devices
 *
 *  Copyright (C) 2015  Intel Corporation
 *
 *
 *  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/firmware.h>
#include <asm/unaligned.h>

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

#include "btbcm.h"

#define VERSION "0.1"

#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})

int btbcm_check_bdaddr(struct hci_dev *hdev)
{
	struct hci_rp_read_bd_addr *bda;
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		int err = PTR_ERR(skb);
		BT_ERR("%s: BCM: Reading device address failed (%d)",
		       hdev->name, err);
		return err;
	}

	if (skb->len != sizeof(*bda)) {
		BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
		kfree_skb(skb);
		return -EIO;
	}

	bda = (struct hci_rp_read_bd_addr *)skb->data;

	/* Check if the address indicates a controller with either an
	 * invalid or default address. In both cases the device needs
	 * to be marked as not having a valid address.
	 *
	 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
	 * with no configured address.
	 *
	 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
	 * with waiting for configuration state.
	 */
	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4324B3)) {
		BT_INFO("%s: BCM: Using default device address (%pMR)",
			hdev->name, &bda->bdaddr);
		set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	}

	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);

int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
	struct sk_buff *skb;
	int err;

	skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		BT_ERR("%s: BCM: Change address command failed (%d)",
		       hdev->name, err);
		return err;
	}
	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);

int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
{
	const struct hci_command_hdr *cmd;
	const u8 *fw_ptr;
	size_t fw_size;
	struct sk_buff *skb;
	u16 opcode;
	int err = 0;

	/* Start Download */
	skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
		       hdev->name, err);
		goto done;
	}
	kfree_skb(skb);

	/* 50 msec delay after Download Minidrv completes */
	msleep(50);

	fw_ptr = fw->data;
	fw_size = fw->size;

	while (fw_size >= sizeof(*cmd)) {
		const u8 *cmd_param;

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

		if (fw_size < cmd->plen) {
			BT_ERR("%s: BCM: Patch is corrupted", hdev->name);
			err = -EINVAL;
			goto done;
		}

		cmd_param = fw_ptr;
		fw_ptr += cmd->plen;
		fw_size -= cmd->plen;

		opcode = le16_to_cpu(cmd->opcode);

		skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
				     HCI_INIT_TIMEOUT);
		if (IS_ERR(skb)) {
			err = PTR_ERR(skb);
			BT_ERR("%s: BCM: Patch command %04x failed (%d)",
			       hdev->name, opcode, err);
			goto done;
		}
		kfree_skb(skb);
	}

	/* 250 msec delay after Launch Ram completes */
	msleep(250);

done:
	return err;
}
EXPORT_SYMBOL(btbcm_patchram);

static int btbcm_reset(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		int err = PTR_ERR(skb);
		BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
		return err;
	}
	kfree_skb(skb);

	return 0;
}

static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s: BCM: Reading local version info failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return skb;
	}

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

	return skb;
}

static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return skb;
	}

	if (skb->len != 7) {
		BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s: BCM: Read USB product info failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return skb;
	}

	if (skb->len != 5) {
		BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

static const struct {
	u16 subver;
	const char *name;
} bcm_uart_subver_table[] = {
	{ 0x410e, "BCM43341B0"	},	/* 002.001.014 */
	{ 0x4406, "BCM4324B3"	},	/* 002.004.006 */
	{ }
};

int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
{
	u16 subver, rev;
	const char *hw_name = NULL;
	struct sk_buff *skb;
	struct hci_rp_read_local_version *ver;
	int i, err;

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Local Version Info */
	skb = btbcm_read_local_version(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	ver = (struct hci_rp_read_local_version *)skb->data;
	rev = le16_to_cpu(ver->hci_rev);
	subver = le16_to_cpu(ver->lmp_subver);
	kfree_skb(skb);

	/* Read Verbose Config Version Info */
	skb = btbcm_read_verbose_config(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
	kfree_skb(skb);

	switch ((rev & 0xf000) >> 12) {
	case 0:
	case 3:
		for (i = 0; bcm_uart_subver_table[i].name; i++) {
			if (subver == bcm_uart_subver_table[i].subver) {
				hw_name = bcm_uart_subver_table[i].name;
				break;
			}
		}

		snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
		break;
	default:
		return 0;
	}

	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
		hw_name ? : "BCM", (subver & 0x7000) >> 13,
		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_initialize);

int btbcm_finalize(struct hci_dev *hdev)
{
	struct sk_buff *skb;
	struct hci_rp_read_local_version *ver;
	u16 subver, rev;
	int err;

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Local Version Info */
	skb = btbcm_read_local_version(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	ver = (struct hci_rp_read_local_version *)skb->data;
	rev = le16_to_cpu(ver->hci_rev);
	subver = le16_to_cpu(ver->lmp_subver);
	kfree_skb(skb);

	BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
		(subver & 0x7000) >> 13, (subver & 0x1f00) >> 8,
		(subver & 0x00ff), rev & 0x0fff);

	btbcm_check_bdaddr(hdev);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_finalize);

static const struct {
	u16 subver;
	const char *name;
} bcm_usb_subver_table[] = {
	{ 0x210b, "BCM43142A0"	},	/* 001.001.011 */
	{ 0x2112, "BCM4314A0"	},	/* 001.001.018 */
	{ 0x2118, "BCM20702A0"	},	/* 001.001.024 */
	{ 0x2126, "BCM4335A0"	},	/* 001.001.038 */
	{ 0x220e, "BCM20702A1"	},	/* 001.002.014 */
	{ 0x230f, "BCM4354A2"	},	/* 001.003.015 */
	{ 0x4106, "BCM4335B0"	},	/* 002.001.006 */
	{ 0x410e, "BCM20702B0"	},	/* 002.001.014 */
	{ 0x6109, "BCM4335C0"	},	/* 003.001.009 */
	{ 0x610c, "BCM4354"	},	/* 003.001.012 */
	{ }
};

int btbcm_setup_patchram(struct hci_dev *hdev)
{
	char fw_name[64];
	const struct firmware *fw;
	u16 subver, rev, pid, vid;
	const char *hw_name = NULL;
	struct sk_buff *skb;
	struct hci_rp_read_local_version *ver;
	int i, err;

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Local Version Info */
	skb = btbcm_read_local_version(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	ver = (struct hci_rp_read_local_version *)skb->data;
	rev = le16_to_cpu(ver->hci_rev);
	subver = le16_to_cpu(ver->lmp_subver);
	kfree_skb(skb);

	/* Read Verbose Config Version Info */
	skb = btbcm_read_verbose_config(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
	kfree_skb(skb);

	switch ((rev & 0xf000) >> 12) {
	case 0:
	case 3:
		for (i = 0; bcm_uart_subver_table[i].name; i++) {
			if (subver == bcm_uart_subver_table[i].subver) {
				hw_name = bcm_uart_subver_table[i].name;
				break;
			}
		}

		snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
			 hw_name ? : "BCM");
		break;
	case 1:
	case 2:
		/* Read USB Product Info */
		skb = btbcm_read_usb_product(hdev);
		if (IS_ERR(skb))
			return PTR_ERR(skb);

		vid = get_unaligned_le16(skb->data + 1);
		pid = get_unaligned_le16(skb->data + 3);
		kfree_skb(skb);

		for (i = 0; bcm_usb_subver_table[i].name; i++) {
			if (subver == bcm_usb_subver_table[i].subver) {
				hw_name = bcm_usb_subver_table[i].name;
				break;
			}
		}

		snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
			 hw_name ? : "BCM", vid, pid);
		break;
	default:
		return 0;
	}

	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
		hw_name ? : "BCM", (subver & 0x7000) >> 13,
		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	err = request_firmware(&fw, fw_name, &hdev->dev);
	if (err < 0) {
		BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
		return 0;
	}

	btbcm_patchram(hdev, fw);

	release_firmware(fw);

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Local Version Info */
	skb = btbcm_read_local_version(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	ver = (struct hci_rp_read_local_version *)skb->data;
	rev = le16_to_cpu(ver->hci_rev);
	subver = le16_to_cpu(ver->lmp_subver);
	kfree_skb(skb);

	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
		hw_name ? : "BCM", (subver & 0x7000) >> 13,
		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	btbcm_check_bdaddr(hdev);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_patchram);

int btbcm_setup_apple(struct hci_dev *hdev)
{
	struct sk_buff *skb;

	/* Read Verbose Config Version Info */
	skb = btbcm_read_verbose_config(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
		get_unaligned_le16(skb->data + 5));
	kfree_skb(skb);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_apple);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
4fba30f0 MH	1	/*
	2	*
	3	* Bluetooth support for Broadcom devices
	4	*
	5	* Copyright (C) 2015 Intel Corporation
	6	*
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23
	24	#include <linux/module.h>
1c8ba6d0 MH	25	#include <linux/firmware.h>
1c8ba6d0 MH	26	#include <asm/unaligned.h>
4fba30f0 MH	27
	28	#include <net/bluetooth/bluetooth.h>
	29	#include <net/bluetooth/hci_core.h>
	30
	31	#include "btbcm.h"
	32
	33	#define VERSION "0.1"
	34
	35	#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
a8f3b941	36	#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
4fba30f0 MH	37
	38	int btbcm_check_bdaddr(struct hci_dev *hdev)
	39	{
	40	struct hci_rp_read_bd_addr *bda;
	41	struct sk_buff *skb;
	42
	43	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
	44	HCI_INIT_TIMEOUT);
	45	if (IS_ERR(skb)) {
	46	int err = PTR_ERR(skb);
	47	BT_ERR("%s: BCM: Reading device address failed (%d)",
	48	hdev->name, err);
	49	return err;
	50	}
	51
	52	if (skb->len != sizeof(*bda)) {
	53	BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
	54	kfree_skb(skb);
	55	return -EIO;
	56	}
	57
	58	bda = (struct hci_rp_read_bd_addr *)skb->data;
4fba30f0	59
a8f3b941 FD	60	/* Check if the address indicates a controller with either an
	61	* invalid or default address. In both cases the device needs
	62	* to be marked as not having a valid address.
	63	*
	64	* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
4fba30f0	65	* with no configured address.
a8f3b941 FD	66	*
	67	* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
	68	* with waiting for configuration state.
4fba30f0	69	*/
a8f3b941 FD	70	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) \|\|
a8f3b941 FD	71	!bacmp(&bda->bdaddr, BDADDR_BCM4324B3)) {
4fba30f0 MH	72	BT_INFO("%s: BCM: Using default device address (%pMR)",
	73	hdev->name, &bda->bdaddr);
	74	set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	75	}
	76
	77	kfree_skb(skb);
	78
	79	return 0;
	80	}
	81	EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
	82
	83	int btbcm_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	84	{
	85	struct sk_buff *skb;
	86	int err;
	87
	88	skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
	89	if (IS_ERR(skb)) {
	90	err = PTR_ERR(skb);
	91	BT_ERR("%s: BCM: Change address command failed (%d)",
	92	hdev->name, err);
	93	return err;
	94	}
	95	kfree_skb(skb);
	96
	97	return 0;
	98	}
	99	EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
	100
18aeb444	101	int btbcm_patchram(struct hci_dev hdev, const struct firmware fw)
50862ee5 MH	102	{
50862ee5 MH	103	const struct hci_command_hdr *cmd;
50862ee5 MH	104	const u8 *fw_ptr;
	105	size_t fw_size;
	106	struct sk_buff *skb;
	107	u16 opcode;
18aeb444	108	int err = 0;
50862ee5 MH	109
	110	/* Start Download */
	111	skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
	112	if (IS_ERR(skb)) {
	113	err = PTR_ERR(skb);
	114	BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
	115	hdev->name, err);
	116	goto done;
	117	}
	118	kfree_skb(skb);
	119
	120	/* 50 msec delay after Download Minidrv completes */
	121	msleep(50);
	122
	123	fw_ptr = fw->data;
	124	fw_size = fw->size;
	125
	126	while (fw_size >= sizeof(*cmd)) {
	127	const u8 *cmd_param;
	128
	129	cmd = (struct hci_command_hdr *)fw_ptr;
	130	fw_ptr += sizeof(*cmd);
	131	fw_size -= sizeof(*cmd);
	132
	133	if (fw_size < cmd->plen) {
18aeb444	134	BT_ERR("%s: BCM: Patch is corrupted", hdev->name);
50862ee5 MH	135	err = -EINVAL;
	136	goto done;
	137	}
	138
	139	cmd_param = fw_ptr;
	140	fw_ptr += cmd->plen;
	141	fw_size -= cmd->plen;
	142
	143	opcode = le16_to_cpu(cmd->opcode);
	144
	145	skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
	146	HCI_INIT_TIMEOUT);
	147	if (IS_ERR(skb)) {
	148	err = PTR_ERR(skb);
	149	BT_ERR("%s: BCM: Patch command %04x failed (%d)",
	150	hdev->name, opcode, err);
	151	goto done;
	152	}
	153	kfree_skb(skb);
	154	}
	155
	156	/* 250 msec delay after Launch Ram completes */
	157	msleep(250);
	158
	159	done:
50862ee5 MH	160	return err;
	161	}
	162	EXPORT_SYMBOL(btbcm_patchram);
	163
1c8ba6d0 MH	164	static int btbcm_reset(struct hci_dev *hdev)
	165	{
	166	struct sk_buff *skb;
	167
	168	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	169	if (IS_ERR(skb)) {
	170	int err = PTR_ERR(skb);
	171	BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
	172	return err;
	173	}
	174	kfree_skb(skb);
	175
	176	return 0;
	177	}
	178
	179	static struct sk_buff btbcm_read_local_version(struct hci_dev hdev)
	180	{
	181	struct sk_buff *skb;
	182
	183	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
	184	HCI_INIT_TIMEOUT);
	185	if (IS_ERR(skb)) {
	186	BT_ERR("%s: BCM: Reading local version info failed (%ld)",
	187	hdev->name, PTR_ERR(skb));
	188	return skb;
	189	}
	190
	191	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
	192	BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
	193	kfree_skb(skb);
	194	return ERR_PTR(-EIO);
	195	}
	196
	197	return skb;
	198	}
	199
	200	static struct sk_buff btbcm_read_verbose_config(struct hci_dev hdev)
	201	{
	202	struct sk_buff *skb;
	203
	204	skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
	205	if (IS_ERR(skb)) {
	206	BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
	207	hdev->name, PTR_ERR(skb));
	208	return skb;
	209	}
	210
	211	if (skb->len != 7) {
	212	BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
	213	kfree_skb(skb);
	214	return ERR_PTR(-EIO);
	215	}
	216
	217	return skb;
	218	}
	219
	220	static struct sk_buff btbcm_read_usb_product(struct hci_dev hdev)
	221	{
	222	struct sk_buff *skb;
	223
	224	skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
	225	if (IS_ERR(skb)) {
	226	BT_ERR("%s: BCM: Read USB product info failed (%ld)",
	227	hdev->name, PTR_ERR(skb));
228	return skb;
229	}
230
231	if (skb->len != 5) {
232	BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
233	kfree_skb(skb);
234	return ERR_PTR(-EIO);
235	}
236
237	return skb;
238	}
239
240	static const struct {
241	u16 subver;
242	const char *name;
9a0bb57d MH	243	} bcm_uart_subver_table[] = {
9a0bb57d MH	244	{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
a8f3b941	245	{ 0x4406, "BCM4324B3" }, /* 002.004.006 */
9a0bb57d MH	246	{ }
	247	};
	248
75e167e6 FD	249	int btbcm_initialize(struct hci_dev hdev, char fw_name, size_t len)
	250	{
	251	u16 subver, rev;
	252	const char *hw_name = NULL;
	253	struct sk_buff *skb;
	254	struct hci_rp_read_local_version *ver;
	255	int i, err;
	256
	257	/* Reset */
	258	err = btbcm_reset(hdev);
	259	if (err)
	260	return err;
	261
	262	/* Read Local Version Info */
	263	skb = btbcm_read_local_version(hdev);
	264	if (IS_ERR(skb))
	265	return PTR_ERR(skb);
	266
	267	ver = (struct hci_rp_read_local_version *)skb->data;
	268	rev = le16_to_cpu(ver->hci_rev);
	269	subver = le16_to_cpu(ver->lmp_subver);
	270	kfree_skb(skb);
	271
	272	/* Read Verbose Config Version Info */
	273	skb = btbcm_read_verbose_config(hdev);
	274	if (IS_ERR(skb))
	275	return PTR_ERR(skb);
	276
	277	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
	278	kfree_skb(skb);
	279
	280	switch ((rev & 0xf000) >> 12) {
	281	case 0:
	282	case 3:
	283	for (i = 0; bcm_uart_subver_table[i].name; i++) {
	284	if (subver == bcm_uart_subver_table[i].subver) {
	285	hw_name = bcm_uart_subver_table[i].name;
	286	break;
	287	}
	288	}
	289
	290	snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
	291	break;
	292	default:
	293	return 0;
	294	}
	295
	296	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
	297	hw_name ? : "BCM", (subver & 0x7000) >> 13,
	298	(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
	299
	300	return 0;
	301	}
	302	EXPORT_SYMBOL_GPL(btbcm_initialize);
	303
	304	int btbcm_finalize(struct hci_dev *hdev)
	305	{
	306	struct sk_buff *skb;
	307	struct hci_rp_read_local_version *ver;
	308	u16 subver, rev;
	309	int err;
	310
	311	/* Reset */
	312	err = btbcm_reset(hdev);
313	if (err)
314	return err;
315
316	/* Read Local Version Info */
317	skb = btbcm_read_local_version(hdev);
318	if (IS_ERR(skb))
319	return PTR_ERR(skb);
320
321	ver = (struct hci_rp_read_local_version *)skb->data;
322	rev = le16_to_cpu(ver->hci_rev);
323	subver = le16_to_cpu(ver->lmp_subver);
324	kfree_skb(skb);
325
326	BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
327	(subver & 0x7000) >> 13, (subver & 0x1f00) >> 8,
328	(subver & 0x00ff), rev & 0x0fff);
329
330	btbcm_check_bdaddr(hdev);
331
332	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
333
334	return 0;
335	}
336	EXPORT_SYMBOL_GPL(btbcm_finalize);
337
9a0bb57d MH	338	static const struct {
	339	u16 subver;
	340	const char *name;
	341	} bcm_usb_subver_table[] = {
1c8ba6d0 MH	342	{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
	343	{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
	344	{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
	345	{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
	346	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
	347	{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
	348	{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
	349	{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
	350	{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
	351	{ 0x610c, "BCM4354" }, /* 003.001.012 */
	352	{ }
	353	};
	354
	355	int btbcm_setup_patchram(struct hci_dev *hdev)
	356	{
1c8ba6d0	357	char fw_name[64];
18aeb444	358	const struct firmware *fw;
50862ee5	359	u16 subver, rev, pid, vid;
1c8ba6d0 MH	360	const char *hw_name = NULL;
	361	struct sk_buff *skb;
	362	struct hci_rp_read_local_version *ver;
	363	int i, err;
	364
	365	/* Reset */
	366	err = btbcm_reset(hdev);
	367	if (err)
	368	return err;
	369
	370	/* Read Local Version Info */
	371	skb = btbcm_read_local_version(hdev);
	372	if (IS_ERR(skb))
	373	return PTR_ERR(skb);
	374
	375	ver = (struct hci_rp_read_local_version *)skb->data;
	376	rev = le16_to_cpu(ver->hci_rev);
	377	subver = le16_to_cpu(ver->lmp_subver);
	378	kfree_skb(skb);
	379
	380	/* Read Verbose Config Version Info */
	381	skb = btbcm_read_verbose_config(hdev);
	382	if (IS_ERR(skb))
	383	return PTR_ERR(skb);
	384
	385	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
	386	kfree_skb(skb);
	387
9a0bb57d MH	388	switch ((rev & 0xf000) >> 12) {
9a0bb57d MH	389	case 0:
a8f3b941	390	case 3:
9a0bb57d MH	391	for (i = 0; bcm_uart_subver_table[i].name; i++) {
	392	if (subver == bcm_uart_subver_table[i].subver) {
	393	hw_name = bcm_uart_subver_table[i].name;
	394	break;
	395	}
	396	}
1c8ba6d0	397
9a0bb57d MH	398	snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
	399	hw_name ? : "BCM");
	400	break;
	401	case 1:
	402	case 2:
	403	/* Read USB Product Info */
	404	skb = btbcm_read_usb_product(hdev);
	405	if (IS_ERR(skb))
	406	return PTR_ERR(skb);
	407
	408	vid = get_unaligned_le16(skb->data + 1);
	409	pid = get_unaligned_le16(skb->data + 3);
	410	kfree_skb(skb);
1c8ba6d0	411
9a0bb57d MH	412	for (i = 0; bcm_usb_subver_table[i].name; i++) {
	413	if (subver == bcm_usb_subver_table[i].subver) {
	414	hw_name = bcm_usb_subver_table[i].name;
	415	break;
	416	}
1c8ba6d0	417	}
9a0bb57d MH	418
	419	snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
	420	hw_name ? : "BCM", vid, pid);
	421	break;
	422	default:
	423	return 0;
1c8ba6d0 MH	424	}
	425
	426	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
	427	hw_name ? : "BCM", (subver & 0x7000) >> 13,
	428	(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
	429
18aeb444 FD	430	err = request_firmware(&fw, fw_name, &hdev->dev);
	431	if (err < 0) {
	432	BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
1c8ba6d0	433	return 0;
18aeb444 FD	434	}
	435
	436	btbcm_patchram(hdev, fw);
	437
	438	release_firmware(fw);
1c8ba6d0	439
1c8ba6d0 MH	440	/* Reset */
	441	err = btbcm_reset(hdev);
	442	if (err)
50862ee5	443	return err;
1c8ba6d0 MH	444
	445	/* Read Local Version Info */
	446	skb = btbcm_read_local_version(hdev);
50862ee5 MH	447	if (IS_ERR(skb))
50862ee5 MH	448	return PTR_ERR(skb);
1c8ba6d0 MH	449
	450	ver = (struct hci_rp_read_local_version *)skb->data;
	451	rev = le16_to_cpu(ver->hci_rev);
	452	subver = le16_to_cpu(ver->lmp_subver);
	453	kfree_skb(skb);
	454
	455	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
	456	hw_name ? : "BCM", (subver & 0x7000) >> 13,
	457	(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
	458
	459	btbcm_check_bdaddr(hdev);
	460
941521e2 MH	461	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
941521e2 MH	462
50862ee5	463	return 0;
1c8ba6d0 MH	464	}
	465	EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
	466
	467	int btbcm_setup_apple(struct hci_dev *hdev)
	468	{
	469	struct sk_buff *skb;
	470
	471	/* Read Verbose Config Version Info */
	472	skb = btbcm_read_verbose_config(hdev);
	473	if (IS_ERR(skb))
	474	return PTR_ERR(skb);
	475
	476	BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
	477	get_unaligned_le16(skb->data + 5));
	478	kfree_skb(skb);
	479
941521e2 MH	480	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
941521e2 MH	481
1c8ba6d0 MH	482	return 0;
	483	}
	484	EXPORT_SYMBOL_GPL(btbcm_setup_apple);
	485
4fba30f0 MH	486	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	487	MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
	488	MODULE_VERSION(VERSION);
	489	MODULE_LICENSE("GPL");