[linux-2.6-block.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_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 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_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
		return err;
	}

	if (skb->len != sizeof(*bda)) {
		bt_dev_err(hdev, "BCM: Device address length mismatch");
		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 20:70:02:A0:00:00 indicates a BCM20702A1 controller
	 * with no configured address.
	 *
	 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
	 * with waiting for configuration state.
	 *
	 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
	 * with waiting for configuration state.
	 */
	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
		bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
			    &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_dev_err(hdev, "BCM: Change address command failed (%d)", 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_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
			   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_dev_err(hdev, "BCM: Patch is corrupted");
			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_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
				   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_dev_err(hdev, "BCM: Reset failed (%d)", err);
		return err;
	}
	kfree_skb(skb);

	/* 100 msec delay for module to complete reset process */
	msleep(100);

	return 0;
}

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

	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
			     HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != sizeof(struct hci_rp_read_local_name)) {
		bt_dev_err(hdev, "BCM: Local name length mismatch");
		kfree_skb(skb);
		return ERR_PTR(-EIO);
	}

	return skb;
}

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_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
		bt_dev_err(hdev, "BCM: Local version length mismatch");
		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_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

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

	return skb;
}

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

	skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

	if (skb->len != 9) {
		bt_dev_err(hdev, "BCM: Controller features length mismatch");
		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_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
			   PTR_ERR(skb));
		return skb;
	}

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

	return skb;
}

static int btbcm_read_info(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_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
	kfree_skb(skb);

	/* Read Controller Features */
	skb = btbcm_read_controller_features(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
	kfree_skb(skb);

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	kfree_skb(skb);

	return 0;
}

struct bcm_subver_table {
	u16 subver;
	const char *name;
};

static const struct bcm_subver_table bcm_uart_subver_table[] = {
	{ 0x4103, "BCM4330B1"	},	/* 002.001.003 */
	{ 0x410e, "BCM43341B0"	},	/* 002.001.014 */
	{ 0x4406, "BCM4324B3"	},	/* 002.004.006 */
	{ 0x6109, "BCM4335C0"	},	/* 003.001.009 */
	{ 0x610c, "BCM4354"	},	/* 003.001.012 */
	{ 0x2122, "BCM4343A0"	},	/* 001.001.034 */
	{ 0x2209, "BCM43430A1"  },	/* 001.002.009 */
	{ 0x6119, "BCM4345C0"	},	/* 003.001.025 */
	{ 0x230f, "BCM4356A2"	},	/* 001.003.015 */
	{ 0x220e, "BCM20702A1"  },	/* 001.002.014 */
	{ }
};

static const struct bcm_subver_table 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_initialize(struct hci_dev *hdev, char *fw_name, size_t len,
		     bool reinit)
{
	u16 subver, rev, pid, vid;
	const char *hw_name = "BCM";
	struct sk_buff *skb;
	struct hci_rp_read_local_version *ver;
	const struct bcm_subver_table *bcm_subver_table;
	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 controller information */
	if (!reinit) {
		err = btbcm_read_info(hdev);
		if (err)
			return err;
	}

	/* Upper nibble of rev should be between 0 and 3? */
	if (((rev & 0xf000) >> 12) > 3)
		return 0;

	bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
						    bcm_uart_subver_table;

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

	if (hdev->bus == HCI_USB) {
		/* 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);

		snprintf(fw_name, len, "brcm/%s-%4.4x-%4.4x.hcd",
			 hw_name, vid, pid);
	} else {
		snprintf(fw_name, len, "brcm/%s.hcd", hw_name);
	}

	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
		    hw_name, (subver & 0xe000) >> 13,
		    (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_initialize);

int btbcm_finalize(struct hci_dev *hdev)
{
	char fw_name[64];
	int err;

	/* Re-initialize */
	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
	if (err)
		return err;

	btbcm_check_bdaddr(hdev);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}
EXPORT_SYMBOL_GPL(btbcm_finalize);

int btbcm_setup_patchram(struct hci_dev *hdev)
{
	char fw_name[64];
	const struct firmware *fw;
	struct sk_buff *skb;
	int err;

	/* Initialize */
	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), false);
	if (err)
		return err;

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

	btbcm_patchram(hdev, fw);

	release_firmware(fw);

	/* Re-initialize */
	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
	if (err)
		return err;

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
	kfree_skb(skb);

done:
	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;
	int err;

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

	/* Read Verbose Config Version Info */
	skb = btbcm_read_verbose_config(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
			    skb->data[1], get_unaligned_le16(skb->data + 5));
		kfree_skb(skb);
	}

	/* Read USB Product Info */
	skb = btbcm_read_usb_product(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
			    get_unaligned_le16(skb->data + 1),
			    get_unaligned_le16(skb->data + 3));
		kfree_skb(skb);
	}

	/* Read Controller Features */
	skb = btbcm_read_controller_features(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
		kfree_skb(skb);
	}

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (!IS_ERR(skb)) {
		bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
		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}})
92ffe0db	36	#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
a8f3b941	37	#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
4a546ec3	38	#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
4fba30f0 MH	39
	40	int btbcm_check_bdaddr(struct hci_dev *hdev)
	41	{
	42	struct hci_rp_read_bd_addr *bda;
	43	struct sk_buff *skb;
	44
	45	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
	46	HCI_INIT_TIMEOUT);
	47	if (IS_ERR(skb)) {
	48	int err = PTR_ERR(skb);
2064ee33	49	bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
4fba30f0 MH	50	return err;
	51	}
	52
	53	if (skb->len != sizeof(*bda)) {
2064ee33	54	bt_dev_err(hdev, "BCM: Device address length mismatch");
4fba30f0 MH	55	kfree_skb(skb);
	56	return -EIO;
	57	}
	58
	59	bda = (struct hci_rp_read_bd_addr *)skb->data;
4fba30f0	60
a8f3b941 FD	61	/* Check if the address indicates a controller with either an
	62	* invalid or default address. In both cases the device needs
	63	* to be marked as not having a valid address.
	64	*
	65	* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
4fba30f0	66	* with no configured address.
a8f3b941	67	*
92ffe0db MR	68	* The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
	69	* with no configured address.
	70	*
a8f3b941 FD	71	* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
a8f3b941 FD	72	* with waiting for configuration state.
4a546ec3 FD	73	*
	74	* The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
	75	* with waiting for configuration state.
4fba30f0	76	*/
a8f3b941	77	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) \|\|
92ffe0db	78	!bacmp(&bda->bdaddr, BDADDR_BCM20702A1) \|\|
4a546ec3 FD	79	!bacmp(&bda->bdaddr, BDADDR_BCM4324B3) \|\|
4a546ec3 FD	80	!bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
2064ee33 MH	81	bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
2064ee33 MH	82	&bda->bdaddr);
4fba30f0 MH	83	set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	84	}
	85
	86	kfree_skb(skb);
	87
	88	return 0;
	89	}
	90	EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
	91
	92	int btbcm_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	93	{
	94	struct sk_buff *skb;
	95	int err;
	96
	97	skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
	98	if (IS_ERR(skb)) {
	99	err = PTR_ERR(skb);
2064ee33	100	bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
4fba30f0 MH	101	return err;
	102	}
	103	kfree_skb(skb);
	104
	105	return 0;
	106	}
	107	EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
	108
18aeb444	109	int btbcm_patchram(struct hci_dev hdev, const struct firmware fw)
50862ee5 MH	110	{
50862ee5 MH	111	const struct hci_command_hdr *cmd;
50862ee5 MH	112	const u8 *fw_ptr;
	113	size_t fw_size;
	114	struct sk_buff *skb;
	115	u16 opcode;
18aeb444	116	int err = 0;
50862ee5 MH	117
	118	/* Start Download */
	119	skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
	120	if (IS_ERR(skb)) {
	121	err = PTR_ERR(skb);
2064ee33 MH	122	bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
2064ee33 MH	123	err);
50862ee5 MH	124	goto done;
	125	}
	126	kfree_skb(skb);
	127
	128	/* 50 msec delay after Download Minidrv completes */
	129	msleep(50);
	130
	131	fw_ptr = fw->data;
	132	fw_size = fw->size;
	133
	134	while (fw_size >= sizeof(*cmd)) {
	135	const u8 *cmd_param;
	136
	137	cmd = (struct hci_command_hdr *)fw_ptr;
	138	fw_ptr += sizeof(*cmd);
	139	fw_size -= sizeof(*cmd);
	140
	141	if (fw_size < cmd->plen) {
2064ee33	142	bt_dev_err(hdev, "BCM: Patch is corrupted");
50862ee5 MH	143	err = -EINVAL;
	144	goto done;
	145	}
	146
	147	cmd_param = fw_ptr;
	148	fw_ptr += cmd->plen;
	149	fw_size -= cmd->plen;
	150
	151	opcode = le16_to_cpu(cmd->opcode);
	152
	153	skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
	154	HCI_INIT_TIMEOUT);
	155	if (IS_ERR(skb)) {
	156	err = PTR_ERR(skb);
2064ee33 MH	157	bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
2064ee33 MH	158	opcode, err);
50862ee5 MH	159	goto done;
	160	}
	161	kfree_skb(skb);
	162	}
	163
	164	/* 250 msec delay after Launch Ram completes */
	165	msleep(250);
	166
	167	done:
50862ee5 MH	168	return err;
	169	}
	170	EXPORT_SYMBOL(btbcm_patchram);
	171
1c8ba6d0 MH	172	static int btbcm_reset(struct hci_dev *hdev)
	173	{
	174	struct sk_buff *skb;
	175
	176	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	177	if (IS_ERR(skb)) {
	178	int err = PTR_ERR(skb);
2064ee33	179	bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
1c8ba6d0 MH	180	return err;
	181	}
	182	kfree_skb(skb);
	183
3af3a594 WJS	184	/* 100 msec delay for module to complete reset process */
	185	msleep(100);
	186
1c8ba6d0 MH	187	return 0;
	188	}
	189
9bc63ca0 MH	190	static struct sk_buff btbcm_read_local_name(struct hci_dev hdev)
	191	{
	192	struct sk_buff *skb;
	193
	194	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
	195	HCI_INIT_TIMEOUT);
	196	if (IS_ERR(skb)) {
2064ee33 MH	197	bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
2064ee33 MH	198	PTR_ERR(skb));
9bc63ca0 MH	199	return skb;
	200	}
	201
	202	if (skb->len != sizeof(struct hci_rp_read_local_name)) {
2064ee33	203	bt_dev_err(hdev, "BCM: Local name length mismatch");
9bc63ca0 MH	204	kfree_skb(skb);
	205	return ERR_PTR(-EIO);
	206	}
	207
	208	return skb;
	209	}
	210
1c8ba6d0 MH	211	static struct sk_buff btbcm_read_local_version(struct hci_dev hdev)
	212	{
	213	struct sk_buff *skb;
	214
	215	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
	216	HCI_INIT_TIMEOUT);
	217	if (IS_ERR(skb)) {
2064ee33 MH	218	bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
2064ee33 MH	219	PTR_ERR(skb));
1c8ba6d0 MH	220	return skb;
	221	}
	222
	223	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
2064ee33	224	bt_dev_err(hdev, "BCM: Local version length mismatch");
1c8ba6d0 MH	225	kfree_skb(skb);
	226	return ERR_PTR(-EIO);
	227	}
	228
	229	return skb;
	230	}
	231
	232	static struct sk_buff btbcm_read_verbose_config(struct hci_dev hdev)
	233	{
	234	struct sk_buff *skb;
	235
	236	skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
	237	if (IS_ERR(skb)) {
2064ee33 MH	238	bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
2064ee33 MH	239	PTR_ERR(skb));
1c8ba6d0 MH	240	return skb;
	241	}
	242
	243	if (skb->len != 7) {
2064ee33	244	bt_dev_err(hdev, "BCM: Verbose config length mismatch");
1c8ba6d0 MH	245	kfree_skb(skb);
	246	return ERR_PTR(-EIO);
	247	}
	248
	249	return skb;
	250	}
	251
4284ecbe MH	252	static struct sk_buff btbcm_read_controller_features(struct hci_dev hdev)
	253	{
	254	struct sk_buff *skb;
	255
	256	skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
	257	if (IS_ERR(skb)) {
2064ee33 MH	258	bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
2064ee33 MH	259	PTR_ERR(skb));
4284ecbe MH	260	return skb;
	261	}
	262
	263	if (skb->len != 9) {
2064ee33	264	bt_dev_err(hdev, "BCM: Controller features length mismatch");
4284ecbe MH	265	kfree_skb(skb);
	266	return ERR_PTR(-EIO);
	267	}
	268
	269	return skb;
	270	}
	271
1c8ba6d0 MH	272	static struct sk_buff btbcm_read_usb_product(struct hci_dev hdev)
	273	{
	274	struct sk_buff *skb;
	275
	276	skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
	277	if (IS_ERR(skb)) {
2064ee33 MH	278	bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
2064ee33 MH	279	PTR_ERR(skb));
1c8ba6d0 MH	280	return skb;
	281	}
	282
	283	if (skb->len != 5) {
2064ee33	284	bt_dev_err(hdev, "BCM: USB product length mismatch");
1c8ba6d0 MH	285	kfree_skb(skb);
	286	return ERR_PTR(-EIO);
	287	}
	288
	289	return skb;
	290	}
	291
e76dc1dd MH	292	static int btbcm_read_info(struct hci_dev *hdev)
	293	{
	294	struct sk_buff *skb;
	295
	296	/* Read Verbose Config Version Info */
	297	skb = btbcm_read_verbose_config(hdev);
	298	if (IS_ERR(skb))
	299	return PTR_ERR(skb);
	300
2064ee33	301	bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
e76dc1dd MH	302	kfree_skb(skb);
	303
	304	/* Read Controller Features */
	305	skb = btbcm_read_controller_features(hdev);
	306	if (IS_ERR(skb))
	307	return PTR_ERR(skb);
	308
2064ee33	309	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
e76dc1dd MH	310	kfree_skb(skb);
	311
	312	/* Read Local Name */
	313	skb = btbcm_read_local_name(hdev);
	314	if (IS_ERR(skb))
	315	return PTR_ERR(skb);
	316
2064ee33	317	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
e76dc1dd MH	318	kfree_skb(skb);
	319
	320	return 0;
	321	}
	322
f7328381	323	struct bcm_subver_table {
1c8ba6d0 MH	324	u16 subver;
1c8ba6d0 MH	325	const char *name;
f7328381 HG	326	};
	327
	328	static const struct bcm_subver_table bcm_uart_subver_table[] = {
4a546ec3	329	{ 0x4103, "BCM4330B1" }, /* 002.001.003 */
9a0bb57d	330	{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
a8f3b941	331	{ 0x4406, "BCM4324B3" }, /* 002.004.006 */
a357ea09	332	{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
40db5f0e	333	{ 0x610c, "BCM4354" }, /* 003.001.012 */
d456f678	334	{ 0x2122, "BCM4343A0" }, /* 001.001.034 */
feb16722	335	{ 0x2209, "BCM43430A1" }, /* 001.002.009 */
18a39b9a	336	{ 0x6119, "BCM4345C0" }, /* 003.001.025 */
b133e0c4	337	{ 0x230f, "BCM4356A2" }, /* 001.003.015 */
92ffe0db	338	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
9a0bb57d MH	339	{ }
	340	};
	341
fec0de23 HG	342	static const struct bcm_subver_table bcm_usb_subver_table[] = {
	343	{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
	344	{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
	345	{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
	346	{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
	347	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
	348	{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
	349	{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
	350	{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
	351	{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
	352	{ 0x610c, "BCM4354" }, /* 003.001.012 */
	353	{ }
	354	};
	355
22ac1916 HG	356	int btbcm_initialize(struct hci_dev hdev, char fw_name, size_t len,
22ac1916 HG	357	bool reinit)
75e167e6	358	{
fec0de23	359	u16 subver, rev, pid, vid;
2cc6d079	360	const char *hw_name = "BCM";
75e167e6 FD	361	struct sk_buff *skb;
75e167e6 FD	362	struct hci_rp_read_local_version *ver;
fec0de23	363	const struct bcm_subver_table *bcm_subver_table;
75e167e6 FD	364	int i, err;
	365
	366	/* Reset */
	367	err = btbcm_reset(hdev);
	368	if (err)
	369	return err;
	370
	371	/* Read Local Version Info */
	372	skb = btbcm_read_local_version(hdev);
	373	if (IS_ERR(skb))
	374	return PTR_ERR(skb);
	375
	376	ver = (struct hci_rp_read_local_version *)skb->data;
	377	rev = le16_to_cpu(ver->hci_rev);
	378	subver = le16_to_cpu(ver->lmp_subver);
	379	kfree_skb(skb);
	380
e76dc1dd	381	/* Read controller information */
22ac1916 HG	382	if (!reinit) {
	383	err = btbcm_read_info(hdev);
	384	if (err)
	385	return err;
	386	}
75e167e6	387
fec0de23 HG	388	/* Upper nibble of rev should be between 0 and 3? */
	389	if (((rev & 0xf000) >> 12) > 3)
	390	return 0;
	391
	392	bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
	393	bcm_uart_subver_table;
	394
	395	for (i = 0; bcm_subver_table[i].name; i++) {
	396	if (subver == bcm_subver_table[i].subver) {
	397	hw_name = bcm_subver_table[i].name;
	398	break;
75e167e6	399	}
fec0de23	400	}
75e167e6	401
fec0de23 HG	402	if (hdev->bus == HCI_USB) {
	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);
	411
	412	snprintf(fw_name, len, "brcm/%s-%4.4x-%4.4x.hcd",
2cc6d079	413	hw_name, vid, pid);
fec0de23	414	} else {
2cc6d079	415	snprintf(fw_name, len, "brcm/%s.hcd", hw_name);
75e167e6 FD	416	}
75e167e6 FD	417
2064ee33	418	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
2cc6d079	419	hw_name, (subver & 0xe000) >> 13,
2064ee33	420	(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
75e167e6 FD	421
	422	return 0;
	423	}
	424	EXPORT_SYMBOL_GPL(btbcm_initialize);
	425
	426	int btbcm_finalize(struct hci_dev *hdev)
	427	{
22ac1916	428	char fw_name[64];
75e167e6 FD	429	int err;
75e167e6 FD	430
22ac1916 HG	431	/* Re-initialize */
22ac1916 HG	432	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
75e167e6 FD	433	if (err)
	434	return err;
	435
75e167e6 FD	436	btbcm_check_bdaddr(hdev);
	437
	438	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
	439
	440	return 0;
	441	}
	442	EXPORT_SYMBOL_GPL(btbcm_finalize);
	443
1c8ba6d0 MH	444	int btbcm_setup_patchram(struct hci_dev *hdev)
1c8ba6d0 MH	445	{
1c8ba6d0	446	char fw_name[64];
18aeb444	447	const struct firmware *fw;
1c8ba6d0	448	struct sk_buff *skb;
59ce5699	449	int err;
1c8ba6d0	450
59ce5699 HG	451	/* Initialize */
59ce5699 HG	452	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), false);
e76dc1dd MH	453	if (err)
e76dc1dd MH	454	return err;
9bc63ca0	455
18aeb444 FD	456	err = request_firmware(&fw, fw_name, &hdev->dev);
18aeb444 FD	457	if (err < 0) {
2064ee33	458	bt_dev_info(hdev, "BCM: Patch %s not found", fw_name);
ad750fa1	459	goto done;
18aeb444 FD	460	}
	461
	462	btbcm_patchram(hdev, fw);
	463
	464	release_firmware(fw);
1c8ba6d0	465
59ce5699 HG	466	/* Re-initialize */
59ce5699 HG	467	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
1c8ba6d0	468	if (err)
50862ee5	469	return err;
1c8ba6d0	470
9bc63ca0 MH	471	/* Read Local Name */
	472	skb = btbcm_read_local_name(hdev);
	473	if (IS_ERR(skb))
	474	return PTR_ERR(skb);
	475
2064ee33	476	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
9bc63ca0 MH	477	kfree_skb(skb);
9bc63ca0 MH	478
ad750fa1	479	done:
1c8ba6d0 MH	480	btbcm_check_bdaddr(hdev);
1c8ba6d0 MH	481
941521e2 MH	482	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
941521e2 MH	483
50862ee5	484	return 0;
1c8ba6d0 MH	485	}
	486	EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
	487
	488	int btbcm_setup_apple(struct hci_dev *hdev)
	489	{
	490	struct sk_buff *skb;
b224d3ff MH	491	int err;
	492
	493	/* Reset */
	494	err = btbcm_reset(hdev);
	495	if (err)
	496	return err;
1c8ba6d0 MH	497
	498	/* Read Verbose Config Version Info */
	499	skb = btbcm_read_verbose_config(hdev);
7bee8b08	500	if (!IS_ERR(skb)) {
2064ee33 MH	501	bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
2064ee33 MH	502	skb->data[1], get_unaligned_le16(skb->data + 5));
7bee8b08 CM	503	kfree_skb(skb);
7bee8b08 CM	504	}
1c8ba6d0	505
34cea41e MH	506	/* Read USB Product Info */
	507	skb = btbcm_read_usb_product(hdev);
	508	if (!IS_ERR(skb)) {
2064ee33 MH	509	bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
	510	get_unaligned_le16(skb->data + 1),
	511	get_unaligned_le16(skb->data + 3));
34cea41e MH	512	kfree_skb(skb);
	513	}
	514
4284ecbe MH	515	/* Read Controller Features */
	516	skb = btbcm_read_controller_features(hdev);
	517	if (!IS_ERR(skb)) {
2064ee33	518	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
4284ecbe MH	519	kfree_skb(skb);
	520	}
	521
9bc63ca0 MH	522	/* Read Local Name */
	523	skb = btbcm_read_local_name(hdev);
	524	if (!IS_ERR(skb)) {
2064ee33	525	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
9bc63ca0 MH	526	kfree_skb(skb);
	527	}
	528
941521e2 MH	529	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
941521e2 MH	530
1c8ba6d0 MH	531	return 0;
	532	}
	533	EXPORT_SYMBOL_GPL(btbcm_setup_apple);
	534
4fba30f0 MH	535	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	536	MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
	537	MODULE_VERSION(VERSION);
	538	MODULE_LICENSE("GPL");