Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * | |
3 | * Broadcom Blutonium firmware driver | |
4 | * | |
5 | * Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | * Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org> | |
7 | * | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
1da177e4 LT |
25 | #include <linux/module.h> |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/errno.h> | |
1da177e4 LT |
32 | |
33 | #include <linux/device.h> | |
34 | #include <linux/firmware.h> | |
35 | ||
36 | #include <linux/usb.h> | |
37 | ||
38 | #include <net/bluetooth/bluetooth.h> | |
39 | ||
40 | #ifndef CONFIG_BT_HCIBCM203X_DEBUG | |
41 | #undef BT_DBG | |
42 | #define BT_DBG(D...) | |
43 | #endif | |
44 | ||
943d56b0 | 45 | #define VERSION "1.2" |
1da177e4 LT |
46 | |
47 | static struct usb_device_id bcm203x_table[] = { | |
48 | /* Broadcom Blutonium (BCM2033) */ | |
49 | { USB_DEVICE(0x0a5c, 0x2033) }, | |
50 | ||
51 | { } /* Terminating entry */ | |
52 | }; | |
53 | ||
54 | MODULE_DEVICE_TABLE(usb, bcm203x_table); | |
55 | ||
56 | #define BCM203X_ERROR 0 | |
57 | #define BCM203X_RESET 1 | |
58 | #define BCM203X_LOAD_MINIDRV 2 | |
59 | #define BCM203X_SELECT_MEMORY 3 | |
60 | #define BCM203X_CHECK_MEMORY 4 | |
61 | #define BCM203X_LOAD_FIRMWARE 5 | |
62 | #define BCM203X_CHECK_FIRMWARE 6 | |
63 | ||
64 | #define BCM203X_IN_EP 0x81 | |
65 | #define BCM203X_OUT_EP 0x02 | |
66 | ||
67 | struct bcm203x_data { | |
68 | struct usb_device *udev; | |
69 | ||
70 | unsigned long state; | |
71 | ||
3f530692 | 72 | struct work_struct work; |
1da177e4 LT |
73 | |
74 | struct urb *urb; | |
75 | unsigned char *buffer; | |
76 | ||
77 | unsigned char *fw_data; | |
78 | unsigned int fw_size; | |
79 | unsigned int fw_sent; | |
80 | }; | |
81 | ||
7d12e780 | 82 | static void bcm203x_complete(struct urb *urb) |
1da177e4 LT |
83 | { |
84 | struct bcm203x_data *data = urb->context; | |
85 | struct usb_device *udev = urb->dev; | |
86 | int len; | |
87 | ||
88 | BT_DBG("udev %p urb %p", udev, urb); | |
89 | ||
90 | if (urb->status) { | |
91 | BT_ERR("URB failed with status %d", urb->status); | |
92 | data->state = BCM203X_ERROR; | |
93 | return; | |
94 | } | |
95 | ||
96 | switch (data->state) { | |
97 | case BCM203X_LOAD_MINIDRV: | |
98 | memcpy(data->buffer, "#", 1); | |
99 | ||
100 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
101 | data->buffer, 1, bcm203x_complete, data); | |
102 | ||
103 | data->state = BCM203X_SELECT_MEMORY; | |
104 | ||
3f530692 | 105 | schedule_work(&data->work); |
1da177e4 LT |
106 | break; |
107 | ||
108 | case BCM203X_SELECT_MEMORY: | |
109 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
110 | data->buffer, 32, bcm203x_complete, data, 1); | |
111 | ||
112 | data->state = BCM203X_CHECK_MEMORY; | |
113 | ||
114 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
115 | BT_ERR("Can't submit URB"); | |
116 | break; | |
117 | ||
118 | case BCM203X_CHECK_MEMORY: | |
119 | if (data->buffer[0] != '#') { | |
120 | BT_ERR("Memory select failed"); | |
121 | data->state = BCM203X_ERROR; | |
122 | break; | |
123 | } | |
124 | ||
125 | data->state = BCM203X_LOAD_FIRMWARE; | |
126 | ||
127 | case BCM203X_LOAD_FIRMWARE: | |
128 | if (data->fw_sent == data->fw_size) { | |
129 | usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP), | |
130 | data->buffer, 32, bcm203x_complete, data, 1); | |
131 | ||
132 | data->state = BCM203X_CHECK_FIRMWARE; | |
133 | } else { | |
134 | len = min_t(uint, data->fw_size - data->fw_sent, 4096); | |
135 | ||
136 | usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
137 | data->fw_data + data->fw_sent, len, bcm203x_complete, data); | |
138 | ||
139 | data->fw_sent += len; | |
140 | } | |
141 | ||
142 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
143 | BT_ERR("Can't submit URB"); | |
144 | break; | |
145 | ||
146 | case BCM203X_CHECK_FIRMWARE: | |
147 | if (data->buffer[0] != '.') { | |
148 | BT_ERR("Firmware loading failed"); | |
149 | data->state = BCM203X_ERROR; | |
150 | break; | |
151 | } | |
152 | ||
153 | data->state = BCM203X_RESET; | |
154 | break; | |
155 | } | |
156 | } | |
157 | ||
c4028958 | 158 | static void bcm203x_work(struct work_struct *work) |
1da177e4 | 159 | { |
c4028958 DH |
160 | struct bcm203x_data *data = |
161 | container_of(work, struct bcm203x_data, work); | |
1da177e4 LT |
162 | |
163 | if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0) | |
164 | BT_ERR("Can't submit URB"); | |
165 | } | |
166 | ||
167 | static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
168 | { | |
169 | const struct firmware *firmware; | |
170 | struct usb_device *udev = interface_to_usbdev(intf); | |
171 | struct bcm203x_data *data; | |
172 | int size; | |
173 | ||
174 | BT_DBG("intf %p id %p", intf, id); | |
175 | ||
943d56b0 | 176 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
1da177e4 LT |
177 | return -ENODEV; |
178 | ||
089b1dbb | 179 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
1da177e4 LT |
180 | if (!data) { |
181 | BT_ERR("Can't allocate memory for data structure"); | |
182 | return -ENOMEM; | |
183 | } | |
184 | ||
1da177e4 LT |
185 | data->udev = udev; |
186 | data->state = BCM203X_LOAD_MINIDRV; | |
187 | ||
188 | data->urb = usb_alloc_urb(0, GFP_KERNEL); | |
189 | if (!data->urb) { | |
190 | BT_ERR("Can't allocate URB"); | |
191 | kfree(data); | |
192 | return -ENOMEM; | |
193 | } | |
194 | ||
195 | if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) { | |
196 | BT_ERR("Mini driver request failed"); | |
197 | usb_free_urb(data->urb); | |
198 | kfree(data); | |
199 | return -EIO; | |
200 | } | |
201 | ||
202 | BT_DBG("minidrv data %p size %d", firmware->data, firmware->size); | |
203 | ||
204 | size = max_t(uint, firmware->size, 4096); | |
205 | ||
206 | data->buffer = kmalloc(size, GFP_KERNEL); | |
207 | if (!data->buffer) { | |
208 | BT_ERR("Can't allocate memory for mini driver"); | |
209 | release_firmware(firmware); | |
210 | usb_free_urb(data->urb); | |
211 | kfree(data); | |
212 | return -ENOMEM; | |
213 | } | |
214 | ||
215 | memcpy(data->buffer, firmware->data, firmware->size); | |
216 | ||
217 | usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP), | |
218 | data->buffer, firmware->size, bcm203x_complete, data); | |
219 | ||
220 | release_firmware(firmware); | |
221 | ||
222 | if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) { | |
223 | BT_ERR("Firmware request failed"); | |
224 | usb_free_urb(data->urb); | |
225 | kfree(data->buffer); | |
226 | kfree(data); | |
227 | return -EIO; | |
228 | } | |
229 | ||
230 | BT_DBG("firmware data %p size %d", firmware->data, firmware->size); | |
231 | ||
232 | data->fw_data = kmalloc(firmware->size, GFP_KERNEL); | |
233 | if (!data->fw_data) { | |
234 | BT_ERR("Can't allocate memory for firmware image"); | |
73ca66b9 | 235 | release_firmware(firmware); |
1da177e4 LT |
236 | usb_free_urb(data->urb); |
237 | kfree(data->buffer); | |
238 | kfree(data); | |
239 | return -ENOMEM; | |
240 | } | |
241 | ||
242 | memcpy(data->fw_data, firmware->data, firmware->size); | |
243 | data->fw_size = firmware->size; | |
244 | data->fw_sent = 0; | |
245 | ||
246 | release_firmware(firmware); | |
247 | ||
c4028958 | 248 | INIT_WORK(&data->work, bcm203x_work); |
1da177e4 LT |
249 | |
250 | usb_set_intfdata(intf, data); | |
251 | ||
3f530692 | 252 | schedule_work(&data->work); |
1da177e4 LT |
253 | |
254 | return 0; | |
255 | } | |
256 | ||
257 | static void bcm203x_disconnect(struct usb_interface *intf) | |
258 | { | |
259 | struct bcm203x_data *data = usb_get_intfdata(intf); | |
260 | ||
261 | BT_DBG("intf %p", intf); | |
262 | ||
263 | usb_kill_urb(data->urb); | |
264 | ||
265 | usb_set_intfdata(intf, NULL); | |
266 | ||
267 | usb_free_urb(data->urb); | |
268 | kfree(data->fw_data); | |
269 | kfree(data->buffer); | |
270 | kfree(data); | |
271 | } | |
272 | ||
273 | static struct usb_driver bcm203x_driver = { | |
1da177e4 LT |
274 | .name = "bcm203x", |
275 | .probe = bcm203x_probe, | |
276 | .disconnect = bcm203x_disconnect, | |
277 | .id_table = bcm203x_table, | |
278 | }; | |
279 | ||
280 | static int __init bcm203x_init(void) | |
281 | { | |
282 | int err; | |
283 | ||
284 | BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION); | |
285 | ||
286 | err = usb_register(&bcm203x_driver); | |
287 | if (err < 0) | |
288 | BT_ERR("Failed to register USB driver"); | |
289 | ||
290 | return err; | |
291 | } | |
292 | ||
293 | static void __exit bcm203x_exit(void) | |
294 | { | |
295 | usb_deregister(&bcm203x_driver); | |
296 | } | |
297 | ||
298 | module_init(bcm203x_init); | |
299 | module_exit(bcm203x_exit); | |
300 | ||
1da177e4 LT |
301 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
302 | MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION); | |
303 | MODULE_VERSION(VERSION); | |
304 | MODULE_LICENSE("GPL"); | |
2312119a MH |
305 | MODULE_FIRMWARE("BCM2033-MD.hex"); |
306 | MODULE_FIRMWARE("BCM2033-FW.bin"); |