[deliverable/linux.git] / drivers / bluetooth / btintel.c

/*
 *
 *  Bluetooth support for Intel 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 <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btintel.h"

#define VERSION "0.1"

#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})

int btintel_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: Reading Intel device address failed (%d)",
		       hdev->name, err);
		return err;
	}

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

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

	/* For some Intel based controllers, the default Bluetooth device
	 * address 00:03:19:9E:8B:00 can be found. These controllers are
	 * fully operational, but have the danger of duplicate addresses
	 * and that in turn can cause problems with Bluetooth operation.
	 */
	if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
		BT_ERR("%s: Found Intel default device address (%pMR)",
		       hdev->name, &bda->bdaddr);
		set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	}

	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(btintel_check_bdaddr);

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

	skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		err = PTR_ERR(skb);
		BT_ERR("%s: Changing Intel device address failed (%d)",
		       hdev->name, err);
		return err;
	}
	kfree_skb(skb);

	return 0;
}
EXPORT_SYMBOL_GPL(btintel_set_bdaddr);

void btintel_hw_error(struct hci_dev *hdev, u8 code)
{
	struct sk_buff *skb;
	u8 type = 0x00;

	BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);

	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s: Reset after hardware error failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return;
	}
	kfree_skb(skb);

	skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
	if (IS_ERR(skb)) {
		BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
		       hdev->name, PTR_ERR(skb));
		return;
	}

	if (skb->len != 13) {
		BT_ERR("%s: Exception info size mismatch", hdev->name);
		kfree_skb(skb);
		return;
	}

	BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));

	kfree_skb(skb);
}
EXPORT_SYMBOL_GPL(btintel_hw_error);

void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver)
{
	const char *variant;

	switch (ver->fw_variant) {
	case 0x06:
		variant = "Bootloader";
		break;
	case 0x23:
		variant = "Firmware";
		break;
	default:
		return;
	}

	BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
		variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
		ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
}
EXPORT_SYMBOL_GPL(btintel_version_info);

int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
			const void *param)
{
	while (plen > 0) {
		struct sk_buff *skb;
		u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;

		cmd_param[0] = fragment_type;
		memcpy(cmd_param + 1, param, fragment_len);

		skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
				     cmd_param, HCI_INIT_TIMEOUT);
		if (IS_ERR(skb))
			return PTR_ERR(skb);

		kfree_skb(skb);

		plen -= fragment_len;
		param += fragment_len;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(btintel_secure_send);

int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name)
{
	const struct firmware *fw;
	struct sk_buff *skb;
	const u8 *fw_ptr;
	int err;

	err = request_firmware_direct(&fw, ddc_name, &hdev->dev);
	if (err < 0) {
		bt_dev_err(hdev, "Failed to load Intel DDC file %s (%d)",
			   ddc_name, err);
		return err;
	}

	bt_dev_info(hdev, "Found Intel DDC parameters: %s", ddc_name);

	fw_ptr = fw->data;

	/* DDC file contains one or more DDC structure which has
	 * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
	 */
	while (fw->size > fw_ptr - fw->data) {
		u8 cmd_plen = fw_ptr[0] + sizeof(u8);

		skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
				     HCI_INIT_TIMEOUT);
		if (IS_ERR(skb)) {
			bt_dev_err(hdev, "Failed to send Intel_Write_DDC (%ld)",
				   PTR_ERR(skb));
			release_firmware(fw);
			return PTR_ERR(skb);
		}

		fw_ptr += cmd_plen;
		kfree_skb(skb);
	}

	release_firmware(fw);

	bt_dev_info(hdev, "Applying Intel DDC parameters completed");

	return 0;
}
EXPORT_SYMBOL_GPL(btintel_load_ddc_config);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("intel/ibt-11-5.sfi");
MODULE_FIRMWARE("intel/ibt-11-5.ddc");
Commit	Line	Data
48f0ed1b MH	1	/*
	2	*
	3	* Bluetooth support for Intel 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>
145f2368	25	#include <linux/firmware.h>
48f0ed1b MH	26
	27	#include <net/bluetooth/bluetooth.h>
	28	#include <net/bluetooth/hci_core.h>
	29
	30	#include "btintel.h"
	31
	32	#define VERSION "0.1"
	33
	34	#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
	35
	36	int btintel_check_bdaddr(struct hci_dev *hdev)
	37	{
	38	struct hci_rp_read_bd_addr *bda;
	39	struct sk_buff *skb;
	40
	41	skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
	42	HCI_INIT_TIMEOUT);
	43	if (IS_ERR(skb)) {
	44	int err = PTR_ERR(skb);
	45	BT_ERR("%s: Reading Intel device address failed (%d)",
	46	hdev->name, err);
	47	return err;
	48	}
	49
	50	if (skb->len != sizeof(*bda)) {
	51	BT_ERR("%s: Intel device address length mismatch", hdev->name);
	52	kfree_skb(skb);
	53	return -EIO;
	54	}
	55
	56	bda = (struct hci_rp_read_bd_addr *)skb->data;
48f0ed1b MH	57
	58	/* For some Intel based controllers, the default Bluetooth device
	59	* address 00:03:19:9E:8B:00 can be found. These controllers are
	60	* fully operational, but have the danger of duplicate addresses
	61	* and that in turn can cause problems with Bluetooth operation.
	62	*/
	63	if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
	64	BT_ERR("%s: Found Intel default device address (%pMR)",
	65	hdev->name, &bda->bdaddr);
	66	set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
	67	}
	68
	69	kfree_skb(skb);
	70
	71	return 0;
	72	}
	73	EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
	74
	75	int btintel_set_bdaddr(struct hci_dev hdev, const bdaddr_t bdaddr)
	76	{
	77	struct sk_buff *skb;
	78	int err;
	79
	80	skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
	81	if (IS_ERR(skb)) {
	82	err = PTR_ERR(skb);
	83	BT_ERR("%s: Changing Intel device address failed (%d)",
	84	hdev->name, err);
	85	return err;
	86	}
	87	kfree_skb(skb);
	88
	89	return 0;
	90	}
	91	EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
	92
973bb97e MH	93	void btintel_hw_error(struct hci_dev *hdev, u8 code)
	94	{
	95	struct sk_buff *skb;
	96	u8 type = 0x00;
	97
	98	BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
	99
	100	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
	101	if (IS_ERR(skb)) {
	102	BT_ERR("%s: Reset after hardware error failed (%ld)",
	103	hdev->name, PTR_ERR(skb));
	104	return;
	105	}
	106	kfree_skb(skb);
	107
	108	skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
	109	if (IS_ERR(skb)) {
	110	BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
	111	hdev->name, PTR_ERR(skb));
	112	return;
	113	}
	114
	115	if (skb->len != 13) {
	116	BT_ERR("%s: Exception info size mismatch", hdev->name);
	117	kfree_skb(skb);
	118	return;
	119	}
	120
	121	BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
	122
	123	kfree_skb(skb);
	124	}
	125	EXPORT_SYMBOL_GPL(btintel_hw_error);
	126
7feb99e1 MH	127	void btintel_version_info(struct hci_dev hdev, struct intel_version ver)
	128	{
	129	const char *variant;
	130
	131	switch (ver->fw_variant) {
	132	case 0x06:
	133	variant = "Bootloader";
	134	break;
	135	case 0x23:
	136	variant = "Firmware";
	137	break;
	138	default:
	139	return;
	140	}
	141
	142	BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
	143	variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
	144	ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
	145	}
	146	EXPORT_SYMBOL_GPL(btintel_version_info);
	147
09df123d MH	148	int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
	149	const void *param)
	150	{
	151	while (plen > 0) {
	152	struct sk_buff *skb;
	153	u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
	154
	155	cmd_param[0] = fragment_type;
	156	memcpy(cmd_param + 1, param, fragment_len);
	157
	158	skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
	159	cmd_param, HCI_INIT_TIMEOUT);
	160	if (IS_ERR(skb))
	161	return PTR_ERR(skb);
	162
	163	kfree_skb(skb);
	164
	165	plen -= fragment_len;
	166	param += fragment_len;
	167	}
	168
	169	return 0;
	170	}
	171	EXPORT_SYMBOL_GPL(btintel_secure_send);
	172
145f2368 LP	173	int btintel_load_ddc_config(struct hci_dev hdev, const char ddc_name)
	174	{
	175	const struct firmware *fw;
	176	struct sk_buff *skb;
	177	const u8 *fw_ptr;
	178	int err;
	179
	180	err = request_firmware_direct(&fw, ddc_name, &hdev->dev);
	181	if (err < 0) {
	182	bt_dev_err(hdev, "Failed to load Intel DDC file %s (%d)",
	183	ddc_name, err);
	184	return err;
	185	}
	186
	187	bt_dev_info(hdev, "Found Intel DDC parameters: %s", ddc_name);
	188
	189	fw_ptr = fw->data;
	190
	191	/* DDC file contains one or more DDC structure which has
	192	* Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
	193	*/
	194	while (fw->size > fw_ptr - fw->data) {
	195	u8 cmd_plen = fw_ptr[0] + sizeof(u8);
	196
	197	skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
	198	HCI_INIT_TIMEOUT);
	199	if (IS_ERR(skb)) {
	200	bt_dev_err(hdev, "Failed to send Intel_Write_DDC (%ld)",
	201	PTR_ERR(skb));
	202	release_firmware(fw);
	203	return PTR_ERR(skb);
	204	}
	205
	206	fw_ptr += cmd_plen;
	207	kfree_skb(skb);
	208	}
	209
	210	release_firmware(fw);
	211
	212	bt_dev_info(hdev, "Applying Intel DDC parameters completed");
	213
	214	return 0;
	215	}
	216	EXPORT_SYMBOL_GPL(btintel_load_ddc_config);
	217
48f0ed1b MH	218	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	219	MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
	220	MODULE_VERSION(VERSION);
	221	MODULE_LICENSE("GPL");
0ed97e82 MH	222	MODULE_FIRMWARE("intel/ibt-11-5.sfi");
0ed97e82 MH	223	MODULE_FIRMWARE("intel/ibt-11-5.ddc");