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1 | /* |
2 | * Copyright (c) 2008-2009 Atheros Communications Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | * | |
18 | */ | |
19 | ||
20 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/device.h> | |
28 | #include <linux/firmware.h> | |
29 | #include <linux/usb.h> | |
30 | #include <net/bluetooth/bluetooth.h> | |
31 | ||
32 | #define VERSION "1.0" | |
33 | ||
34 | ||
35 | static struct usb_device_id ath3k_table[] = { | |
36 | /* Atheros AR3011 */ | |
37 | { USB_DEVICE(0x0CF3, 0x3000) }, | |
38 | { } /* Terminating entry */ | |
39 | }; | |
40 | ||
41 | MODULE_DEVICE_TABLE(usb, ath3k_table); | |
42 | ||
43 | #define USB_REQ_DFU_DNLOAD 1 | |
44 | #define BULK_SIZE 4096 | |
45 | ||
46 | struct ath3k_data { | |
47 | struct usb_device *udev; | |
48 | u8 *fw_data; | |
49 | u32 fw_size; | |
50 | u32 fw_sent; | |
51 | }; | |
52 | ||
53 | static int ath3k_load_firmware(struct ath3k_data *data, | |
54 | unsigned char *firmware, | |
55 | int count) | |
56 | { | |
57 | u8 *send_buf; | |
58 | int err, pipe, len, size, sent = 0; | |
59 | ||
60 | BT_DBG("ath3k %p udev %p", data, data->udev); | |
61 | ||
62 | pipe = usb_sndctrlpipe(data->udev, 0); | |
63 | ||
64 | if ((usb_control_msg(data->udev, pipe, | |
65 | USB_REQ_DFU_DNLOAD, | |
66 | USB_TYPE_VENDOR, 0, 0, | |
67 | firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) { | |
68 | BT_ERR("Can't change to loading configuration err"); | |
69 | return -EBUSY; | |
70 | } | |
71 | sent += 20; | |
72 | count -= 20; | |
73 | ||
74 | send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); | |
75 | if (!send_buf) { | |
76 | BT_ERR("Can't allocate memory chunk for firmware"); | |
77 | return -ENOMEM; | |
78 | } | |
79 | ||
80 | while (count) { | |
81 | size = min_t(uint, count, BULK_SIZE); | |
82 | pipe = usb_sndbulkpipe(data->udev, 0x02); | |
83 | memcpy(send_buf, firmware + sent, size); | |
84 | ||
85 | err = usb_bulk_msg(data->udev, pipe, send_buf, size, | |
86 | &len, 3000); | |
87 | ||
88 | if (err || (len != size)) { | |
89 | BT_ERR("Error in firmware loading err = %d," | |
90 | "len = %d, size = %d", err, len, size); | |
91 | goto error; | |
92 | } | |
93 | ||
94 | sent += size; | |
95 | count -= size; | |
96 | } | |
97 | ||
98 | kfree(send_buf); | |
99 | return 0; | |
100 | ||
101 | error: | |
102 | kfree(send_buf); | |
103 | return err; | |
104 | } | |
105 | ||
106 | static int ath3k_probe(struct usb_interface *intf, | |
107 | const struct usb_device_id *id) | |
108 | { | |
109 | const struct firmware *firmware; | |
110 | struct usb_device *udev = interface_to_usbdev(intf); | |
111 | struct ath3k_data *data; | |
112 | int size; | |
113 | ||
114 | BT_DBG("intf %p id %p", intf, id); | |
115 | ||
116 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) | |
117 | return -ENODEV; | |
118 | ||
119 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
120 | if (!data) | |
121 | return -ENOMEM; | |
122 | ||
123 | data->udev = udev; | |
124 | ||
125 | if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { | |
126 | kfree(data); | |
127 | return -EIO; | |
128 | } | |
129 | ||
130 | size = max_t(uint, firmware->size, 4096); | |
131 | data->fw_data = kmalloc(size, GFP_KERNEL); | |
132 | if (!data->fw_data) { | |
133 | release_firmware(firmware); | |
134 | kfree(data); | |
135 | return -ENOMEM; | |
136 | } | |
137 | ||
138 | memcpy(data->fw_data, firmware->data, firmware->size); | |
139 | data->fw_size = firmware->size; | |
140 | data->fw_sent = 0; | |
141 | release_firmware(firmware); | |
142 | ||
143 | usb_set_intfdata(intf, data); | |
144 | if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) { | |
145 | usb_set_intfdata(intf, NULL); | |
10f7891f DC |
146 | kfree(data->fw_data); |
147 | kfree(data); | |
9670d80a VK |
148 | return -EIO; |
149 | } | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | static void ath3k_disconnect(struct usb_interface *intf) | |
155 | { | |
156 | struct ath3k_data *data = usb_get_intfdata(intf); | |
157 | ||
158 | BT_DBG("ath3k_disconnect intf %p", intf); | |
159 | ||
160 | kfree(data->fw_data); | |
161 | kfree(data); | |
162 | } | |
163 | ||
164 | static struct usb_driver ath3k_driver = { | |
165 | .name = "ath3k", | |
166 | .probe = ath3k_probe, | |
167 | .disconnect = ath3k_disconnect, | |
168 | .id_table = ath3k_table, | |
169 | }; | |
170 | ||
171 | static int __init ath3k_init(void) | |
172 | { | |
173 | BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); | |
174 | return usb_register(&ath3k_driver); | |
175 | } | |
176 | ||
177 | static void __exit ath3k_exit(void) | |
178 | { | |
179 | usb_deregister(&ath3k_driver); | |
180 | } | |
181 | ||
182 | module_init(ath3k_init); | |
183 | module_exit(ath3k_exit); | |
184 | ||
185 | MODULE_AUTHOR("Atheros Communications"); | |
186 | MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); | |
187 | MODULE_VERSION(VERSION); | |
188 | MODULE_LICENSE("GPL"); | |
189 | MODULE_FIRMWARE("ath3k-1.fw"); |