summaryrefslogtreecommitdiff
path: root/drivers/bluetooth/btintel.c
blob: 048423fd83bf8cc5b17df1bff18d90dea826b877 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/*
 *
 *  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 <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);

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");