[linux-2.6-block.git] / drivers / bluetooth / btbcm.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 *  Bluetooth support for Broadcom devices
 *
 *  Copyright (C) 2015  Intel Corporation
 */

#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_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 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 20:76:A0:00:56:79 indicates a BCM2076B1 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.
	 *
	 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
	 * with no configured address.
	 */
	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
	    !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
		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 */
	{ 0x4204, "BCM2076B1"	},	/* 002.002.004 */
	{ 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 */
	{ 0x6606, "BCM4345C5"	},	/* 003.006.006 */
	{ 0x230f, "BCM4356A2"	},	/* 001.003.015 */
	{ 0x220e, "BCM20702A1"  },	/* 001.002.014 */
	{ 0x4217, "BCM4329B1"   },	/* 002.002.023 */
	{ 0x6106, "BCM4359C0"	},	/* 003.001.006 */
	{ }
};

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
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
4fba30f0 MH	2	/*
	3	*
	4	* Bluetooth support for Broadcom devices
	5	*
	6	* Copyright (C) 2015 Intel Corporation
4fba30f0 MH	7	*/
	8
	9	#include <linux/module.h>
1c8ba6d0 MH	10	#include <linux/firmware.h>
1c8ba6d0 MH	11	#include <asm/unaligned.h>
4fba30f0 MH	12
	13	#include <net/bluetooth/bluetooth.h>
	14	#include <net/bluetooth/hci_core.h>
	15
	16	#include "btbcm.h"
	17
	18	#define VERSION "0.1"
	19
	20	#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
92ffe0db	21	#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
300926b1	22	#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
0697607a	23	#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
a8f3b941	24	#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
4a546ec3	25	#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
52c8c7a7	26	#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
50357261	27	#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
4fba30f0 MH	28
	29	int btbcm_check_bdaddr(struct hci_dev *hdev)
	30	{
	31	struct hci_rp_read_bd_addr *bda;
	32	struct sk_buff *skb;
	33
	34	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
	35	HCI_INIT_TIMEOUT);
	36	if (IS_ERR(skb)) {
	37	int err = PTR_ERR(skb);
2064ee33	38	bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
4fba30f0 MH	39	return err;
	40	}
	41
	42	if (skb->len != sizeof(*bda)) {
2064ee33	43	bt_dev_err(hdev, "BCM: Device address length mismatch");
4fba30f0 MH	44	kfree_skb(skb);
	45	return -EIO;
	46	}
	47
	48	bda = (struct hci_rp_read_bd_addr *)skb->data;
4fba30f0	49
a8f3b941 FD	50	/* Check if the address indicates a controller with either an
	51	* invalid or default address. In both cases the device needs
	52	* to be marked as not having a valid address.
	53	*
	54	* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
4fba30f0	55	* with no configured address.
a8f3b941	56	*
92ffe0db MR	57	* The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
	58	* with no configured address.
	59	*
300926b1 SG	60	* The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
	61	* with no configured address.
	62	*
a8f3b941 FD	63	* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
a8f3b941 FD	64	* with waiting for configuration state.
4a546ec3 FD	65	*
	66	* The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
	67	* with waiting for configuration state.
0697607a CYT	68	*
	69	* The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
	70	* with no configured address.
4fba30f0	71	*/
a8f3b941	72	if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) \|\|
92ffe0db	73	!bacmp(&bda->bdaddr, BDADDR_BCM20702A1) \|\|
300926b1	74	!bacmp(&bda->bdaddr, BDADDR_BCM2076B1) \|\|
4a546ec3	75	!bacmp(&bda->bdaddr, BDADDR_BCM4324B3) \|\|
0697607a	76	!bacmp(&bda->bdaddr, BDADDR_BCM4330B1) \|\|
52c8c7a7	77	!bacmp(&bda->bdaddr, BDADDR_BCM4345C5) \|\|
50357261 FT	78	!bacmp(&bda->bdaddr, BDADDR_BCM43430A0) \|\|
50357261 FT	79	!bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
2064ee33 MH	80	bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
2064ee33 MH	81	&bda->bdaddr);
4fba30f0 MH	82	set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	83	}
	84
	85	kfree_skb(skb);
	86
	87	return 0;
	88	}
	89	EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
	90
	91	int btbcm_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	92	{
	93	struct sk_buff *skb;
	94	int err;
	95
	96	skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
	97	if (IS_ERR(skb)) {
	98	err = PTR_ERR(skb);
2064ee33	99	bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
4fba30f0 MH	100	return err;
	101	}
	102	kfree_skb(skb);
	103
	104	return 0;
	105	}
	106	EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
	107
18aeb444	108	int btbcm_patchram(struct hci_dev hdev, const struct firmware fw)
50862ee5 MH	109	{
50862ee5 MH	110	const struct hci_command_hdr *cmd;
50862ee5 MH	111	const u8 *fw_ptr;
	112	size_t fw_size;
	113	struct sk_buff *skb;
	114	u16 opcode;
18aeb444	115	int err = 0;
50862ee5 MH	116
	117	/* Start Download */
	118	skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
	119	if (IS_ERR(skb)) {
	120	err = PTR_ERR(skb);
2064ee33 MH	121	bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
2064ee33 MH	122	err);
50862ee5 MH	123	goto done;
	124	}
	125	kfree_skb(skb);
	126
	127	/* 50 msec delay after Download Minidrv completes */
	128	msleep(50);
	129
	130	fw_ptr = fw->data;
	131	fw_size = fw->size;
	132
	133	while (fw_size >= sizeof(*cmd)) {
	134	const u8 *cmd_param;
	135
	136	cmd = (struct hci_command_hdr *)fw_ptr;
	137	fw_ptr += sizeof(*cmd);
	138	fw_size -= sizeof(*cmd);
	139
	140	if (fw_size < cmd->plen) {
2064ee33	141	bt_dev_err(hdev, "BCM: Patch is corrupted");
50862ee5 MH	142	err = -EINVAL;
	143	goto done;
	144	}
	145
	146	cmd_param = fw_ptr;
	147	fw_ptr += cmd->plen;
	148	fw_size -= cmd->plen;
	149
	150	opcode = le16_to_cpu(cmd->opcode);
	151
	152	skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
	153	HCI_INIT_TIMEOUT);
	154	if (IS_ERR(skb)) {
	155	err = PTR_ERR(skb);
2064ee33 MH	156	bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
2064ee33 MH	157	opcode, err);
50862ee5 MH	158	goto done;
	159	}
	160	kfree_skb(skb);
	161	}
	162
	163	/* 250 msec delay after Launch Ram completes */
	164	msleep(250);
	165
	166	done:
50862ee5 MH	167	return err;
	168	}
	169	EXPORT_SYMBOL(btbcm_patchram);
	170
1c8ba6d0 MH	171	static int btbcm_reset(struct hci_dev *hdev)
	172	{
	173	struct sk_buff *skb;
	174
	175	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	176	if (IS_ERR(skb)) {
	177	int err = PTR_ERR(skb);
2064ee33	178	bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
1c8ba6d0 MH	179	return err;
	180	}
	181	kfree_skb(skb);
	182
3af3a594 WJS	183	/* 100 msec delay for module to complete reset process */
	184	msleep(100);
	185
1c8ba6d0 MH	186	return 0;
	187	}
	188
9bc63ca0 MH	189	static struct sk_buff btbcm_read_local_name(struct hci_dev hdev)
	190	{
	191	struct sk_buff *skb;
	192
	193	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
	194	HCI_INIT_TIMEOUT);
	195	if (IS_ERR(skb)) {
2064ee33 MH	196	bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
2064ee33 MH	197	PTR_ERR(skb));
9bc63ca0 MH	198	return skb;
	199	}
	200
	201	if (skb->len != sizeof(struct hci_rp_read_local_name)) {
2064ee33	202	bt_dev_err(hdev, "BCM: Local name length mismatch");
9bc63ca0 MH	203	kfree_skb(skb);
	204	return ERR_PTR(-EIO);
	205	}
	206
	207	return skb;
	208	}
	209
1c8ba6d0 MH	210	static struct sk_buff btbcm_read_local_version(struct hci_dev hdev)
	211	{
	212	struct sk_buff *skb;
	213
	214	skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
	215	HCI_INIT_TIMEOUT);
	216	if (IS_ERR(skb)) {
2064ee33 MH	217	bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
2064ee33 MH	218	PTR_ERR(skb));
1c8ba6d0 MH	219	return skb;
	220	}
	221
	222	if (skb->len != sizeof(struct hci_rp_read_local_version)) {
2064ee33	223	bt_dev_err(hdev, "BCM: Local version length mismatch");
1c8ba6d0 MH	224	kfree_skb(skb);
	225	return ERR_PTR(-EIO);
	226	}
	227
	228	return skb;
	229	}
	230
	231	static struct sk_buff btbcm_read_verbose_config(struct hci_dev hdev)
	232	{
	233	struct sk_buff *skb;
	234
	235	skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
	236	if (IS_ERR(skb)) {
2064ee33 MH	237	bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
2064ee33 MH	238	PTR_ERR(skb));
1c8ba6d0 MH	239	return skb;
	240	}
	241
	242	if (skb->len != 7) {
2064ee33	243	bt_dev_err(hdev, "BCM: Verbose config length mismatch");
1c8ba6d0 MH	244	kfree_skb(skb);
	245	return ERR_PTR(-EIO);
	246	}
	247
	248	return skb;
	249	}
	250
4284ecbe MH	251	static struct sk_buff btbcm_read_controller_features(struct hci_dev hdev)
	252	{
	253	struct sk_buff *skb;
	254
	255	skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
	256	if (IS_ERR(skb)) {
2064ee33 MH	257	bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
2064ee33 MH	258	PTR_ERR(skb));
4284ecbe MH	259	return skb;
	260	}
	261
	262	if (skb->len != 9) {
2064ee33	263	bt_dev_err(hdev, "BCM: Controller features length mismatch");
4284ecbe MH	264	kfree_skb(skb);
	265	return ERR_PTR(-EIO);
	266	}
	267
	268	return skb;
	269	}
	270
1c8ba6d0 MH	271	static struct sk_buff btbcm_read_usb_product(struct hci_dev hdev)
	272	{
	273	struct sk_buff *skb;
	274
	275	skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
	276	if (IS_ERR(skb)) {
2064ee33 MH	277	bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
2064ee33 MH	278	PTR_ERR(skb));
1c8ba6d0 MH	279	return skb;
	280	}
	281
	282	if (skb->len != 5) {
2064ee33	283	bt_dev_err(hdev, "BCM: USB product length mismatch");
1c8ba6d0 MH	284	kfree_skb(skb);
	285	return ERR_PTR(-EIO);
	286	}
	287
	288	return skb;
	289	}
	290
e76dc1dd MH	291	static int btbcm_read_info(struct hci_dev *hdev)
	292	{
	293	struct sk_buff *skb;
	294
	295	/* Read Verbose Config Version Info */
	296	skb = btbcm_read_verbose_config(hdev);
	297	if (IS_ERR(skb))
	298	return PTR_ERR(skb);
	299
2064ee33	300	bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
e76dc1dd MH	301	kfree_skb(skb);
	302
	303	/* Read Controller Features */
	304	skb = btbcm_read_controller_features(hdev);
	305	if (IS_ERR(skb))
	306	return PTR_ERR(skb);
	307
2064ee33	308	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
e76dc1dd MH	309	kfree_skb(skb);
	310
	311	/* Read Local Name */
	312	skb = btbcm_read_local_name(hdev);
	313	if (IS_ERR(skb))
	314	return PTR_ERR(skb);
	315
2064ee33	316	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
e76dc1dd MH	317	kfree_skb(skb);
	318
	319	return 0;
	320	}
	321
f7328381	322	struct bcm_subver_table {
1c8ba6d0 MH	323	u16 subver;
1c8ba6d0 MH	324	const char *name;
f7328381 HG	325	};
	326
	327	static const struct bcm_subver_table bcm_uart_subver_table[] = {
4a546ec3	328	{ 0x4103, "BCM4330B1" }, /* 002.001.003 */
9a0bb57d	329	{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
039287aa	330	{ 0x4204, "BCM2076B1" }, /* 002.002.004 */
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 */
52c8c7a7	337	{ 0x6606, "BCM4345C5" }, /* 003.006.006 */
b133e0c4	338	{ 0x230f, "BCM4356A2" }, /* 001.003.015 */
92ffe0db	339	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
e3ca60d0	340	{ 0x4217, "BCM4329B1" }, /* 002.002.023 */
f4d297ee	341	{ 0x6106, "BCM4359C0" }, /* 003.001.006 */
9a0bb57d MH	342	{ }
	343	};
	344
fec0de23 HG	345	static const struct bcm_subver_table bcm_usb_subver_table[] = {
	346	{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
	347	{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
	348	{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
	349	{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
	350	{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
	351	{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
	352	{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
	353	{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
	354	{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
	355	{ 0x610c, "BCM4354" }, /* 003.001.012 */
	356	{ }
	357	};
	358
22ac1916 HG	359	int btbcm_initialize(struct hci_dev hdev, char fw_name, size_t len,
22ac1916 HG	360	bool reinit)
75e167e6	361	{
fec0de23	362	u16 subver, rev, pid, vid;
2cc6d079	363	const char *hw_name = "BCM";
75e167e6 FD	364	struct sk_buff *skb;
75e167e6 FD	365	struct hci_rp_read_local_version *ver;
fec0de23	366	const struct bcm_subver_table *bcm_subver_table;
75e167e6 FD	367	int i, err;
	368
	369	/* Reset */
	370	err = btbcm_reset(hdev);
	371	if (err)
	372	return err;
	373
	374	/* Read Local Version Info */
	375	skb = btbcm_read_local_version(hdev);
	376	if (IS_ERR(skb))
	377	return PTR_ERR(skb);
	378
	379	ver = (struct hci_rp_read_local_version *)skb->data;
	380	rev = le16_to_cpu(ver->hci_rev);
	381	subver = le16_to_cpu(ver->lmp_subver);
	382	kfree_skb(skb);
	383
e76dc1dd	384	/* Read controller information */
22ac1916 HG	385	if (!reinit) {
	386	err = btbcm_read_info(hdev);
	387	if (err)
	388	return err;
	389	}
75e167e6	390
fec0de23 HG	391	/* Upper nibble of rev should be between 0 and 3? */
	392	if (((rev & 0xf000) >> 12) > 3)
	393	return 0;
	394
	395	bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
	396	bcm_uart_subver_table;
	397
	398	for (i = 0; bcm_subver_table[i].name; i++) {
	399	if (subver == bcm_subver_table[i].subver) {
	400	hw_name = bcm_subver_table[i].name;
	401	break;
75e167e6	402	}
fec0de23	403	}
75e167e6	404
fec0de23 HG	405	if (hdev->bus == HCI_USB) {
	406	/* Read USB Product Info */
	407	skb = btbcm_read_usb_product(hdev);
	408	if (IS_ERR(skb))
	409	return PTR_ERR(skb);
	410
	411	vid = get_unaligned_le16(skb->data + 1);
	412	pid = get_unaligned_le16(skb->data + 3);
	413	kfree_skb(skb);
	414
	415	snprintf(fw_name, len, "brcm/%s-%4.4x-%4.4x.hcd",
2cc6d079	416	hw_name, vid, pid);
fec0de23	417	} else {
2cc6d079	418	snprintf(fw_name, len, "brcm/%s.hcd", hw_name);
75e167e6 FD	419	}
75e167e6 FD	420
2064ee33	421	bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
2cc6d079	422	hw_name, (subver & 0xe000) >> 13,
2064ee33	423	(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
75e167e6 FD	424
	425	return 0;
	426	}
	427	EXPORT_SYMBOL_GPL(btbcm_initialize);
	428
	429	int btbcm_finalize(struct hci_dev *hdev)
	430	{
22ac1916	431	char fw_name[64];
75e167e6 FD	432	int err;
75e167e6 FD	433
22ac1916 HG	434	/* Re-initialize */
22ac1916 HG	435	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
75e167e6 FD	436	if (err)
	437	return err;
	438
75e167e6 FD	439	btbcm_check_bdaddr(hdev);
	440
	441	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
	442
	443	return 0;
	444	}
	445	EXPORT_SYMBOL_GPL(btbcm_finalize);
	446
1c8ba6d0 MH	447	int btbcm_setup_patchram(struct hci_dev *hdev)
1c8ba6d0 MH	448	{
1c8ba6d0	449	char fw_name[64];
18aeb444	450	const struct firmware *fw;
1c8ba6d0	451	struct sk_buff *skb;
59ce5699	452	int err;
1c8ba6d0	453
59ce5699 HG	454	/* Initialize */
59ce5699 HG	455	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), false);
e76dc1dd MH	456	if (err)
e76dc1dd MH	457	return err;
9bc63ca0	458
18aeb444 FD	459	err = request_firmware(&fw, fw_name, &hdev->dev);
18aeb444 FD	460	if (err < 0) {
2064ee33	461	bt_dev_info(hdev, "BCM: Patch %s not found", fw_name);
ad750fa1	462	goto done;
18aeb444 FD	463	}
	464
	465	btbcm_patchram(hdev, fw);
	466
	467	release_firmware(fw);
1c8ba6d0	468
59ce5699 HG	469	/* Re-initialize */
59ce5699 HG	470	err = btbcm_initialize(hdev, fw_name, sizeof(fw_name), true);
1c8ba6d0	471	if (err)
50862ee5	472	return err;
1c8ba6d0	473
9bc63ca0 MH	474	/* Read Local Name */
	475	skb = btbcm_read_local_name(hdev);
	476	if (IS_ERR(skb))
	477	return PTR_ERR(skb);
	478
2064ee33	479	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
9bc63ca0 MH	480	kfree_skb(skb);
9bc63ca0 MH	481
ad750fa1	482	done:
1c8ba6d0 MH	483	btbcm_check_bdaddr(hdev);
1c8ba6d0 MH	484
941521e2 MH	485	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
941521e2 MH	486
50862ee5	487	return 0;
1c8ba6d0 MH	488	}
	489	EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
	490
	491	int btbcm_setup_apple(struct hci_dev *hdev)
	492	{
	493	struct sk_buff *skb;
b224d3ff MH	494	int err;
	495
	496	/* Reset */
	497	err = btbcm_reset(hdev);
	498	if (err)
	499	return err;
1c8ba6d0 MH	500
	501	/* Read Verbose Config Version Info */
	502	skb = btbcm_read_verbose_config(hdev);
7bee8b08	503	if (!IS_ERR(skb)) {
2064ee33 MH	504	bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
2064ee33 MH	505	skb->data[1], get_unaligned_le16(skb->data + 5));
7bee8b08 CM	506	kfree_skb(skb);
7bee8b08 CM	507	}
1c8ba6d0	508
34cea41e MH	509	/* Read USB Product Info */
	510	skb = btbcm_read_usb_product(hdev);
	511	if (!IS_ERR(skb)) {
2064ee33 MH	512	bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
	513	get_unaligned_le16(skb->data + 1),
	514	get_unaligned_le16(skb->data + 3));
34cea41e MH	515	kfree_skb(skb);
	516	}
	517
4284ecbe MH	518	/* Read Controller Features */
	519	skb = btbcm_read_controller_features(hdev);
	520	if (!IS_ERR(skb)) {
2064ee33	521	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
4284ecbe MH	522	kfree_skb(skb);
	523	}
	524
9bc63ca0 MH	525	/* Read Local Name */
	526	skb = btbcm_read_local_name(hdev);
	527	if (!IS_ERR(skb)) {
2064ee33	528	bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
9bc63ca0 MH	529	kfree_skb(skb);
	530	}
	531
941521e2 MH	532	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
941521e2 MH	533
1c8ba6d0 MH	534	return 0;
	535	}
	536	EXPORT_SYMBOL_GPL(btbcm_setup_apple);
	537
4fba30f0 MH	538	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	539	MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
	540	MODULE_VERSION(VERSION);
	541	MODULE_LICENSE("GPL");