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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 | #define ATH3K_FIRMWARE "ath3k-1.fw" |
34 | |
35 | #define ATH3K_DNLOAD 0x01 |
36 | #define ATH3K_GETSTATE 0x05 |
37 | #define ATH3K_SET_NORMAL_MODE 0x07 |
38 | #define ATH3K_GETVERSION 0x09 |
39 | #define USB_REG_SWITCH_VID_PID 0x0a |
40 | |
41 | #define ATH3K_MODE_MASK 0x3F |
42 | #define ATH3K_NORMAL_MODE 0x0E |
43 | |
44 | #define ATH3K_PATCH_UPDATE 0x80 |
45 | #define ATH3K_SYSCFG_UPDATE 0x40 |
46 | |
47 | #define ATH3K_XTAL_FREQ_26M 0x00 |
48 | #define ATH3K_XTAL_FREQ_40M 0x01 |
49 | #define ATH3K_XTAL_FREQ_19P2 0x02 |
50 | #define ATH3K_NAME_LEN 0xFF |
51 | |
52 | struct ath3k_version { |
53 | unsigned int rom_version; |
54 | unsigned int build_version; |
55 | unsigned int ram_version; |
56 | unsigned char ref_clock; |
57 | unsigned char reserved[0x07]; |
58 | }; |
59 | |
60 | static struct usb_device_id ath3k_table[] = { |
61 | /* Atheros AR3011 */ |
62 | { USB_DEVICE(0x0CF3, 0x3000) }, |
63 | |
64 | /* Atheros AR3011 with sflash firmware*/ |
65 | { USB_DEVICE(0x0CF3, 0x3002) }, |
66 | { USB_DEVICE(0x0CF3, 0xE019) }, |
67 | { USB_DEVICE(0x13d3, 0x3304) }, |
68 | { USB_DEVICE(0x0930, 0x0215) }, |
69 | { USB_DEVICE(0x0489, 0xE03D) }, |
70 | { USB_DEVICE(0x0489, 0xE027) }, |
71 | |
72 | /* Atheros AR9285 Malbec with sflash firmware */ |
73 | { USB_DEVICE(0x03F0, 0x311D) }, |
74 | |
75 | /* Atheros AR3012 with sflash firmware*/ |
76 | { USB_DEVICE(0x0CF3, 0x0036) }, |
77 | { USB_DEVICE(0x0CF3, 0x3004) }, |
78 | { USB_DEVICE(0x0CF3, 0x3008) }, |
79 | { USB_DEVICE(0x0CF3, 0x311D) }, |
80 | { USB_DEVICE(0x0CF3, 0x817a) }, |
81 | { USB_DEVICE(0x13d3, 0x3375) }, |
82 | { USB_DEVICE(0x04CA, 0x3004) }, |
83 | { USB_DEVICE(0x04CA, 0x3005) }, |
84 | { USB_DEVICE(0x04CA, 0x3006) }, |
85 | { USB_DEVICE(0x04CA, 0x3008) }, |
86 | { USB_DEVICE(0x13d3, 0x3362) }, |
87 | { USB_DEVICE(0x0CF3, 0xE004) }, |
88 | { USB_DEVICE(0x0930, 0x0219) }, |
89 | { USB_DEVICE(0x0489, 0xe057) }, |
90 | { USB_DEVICE(0x13d3, 0x3393) }, |
91 | { USB_DEVICE(0x0489, 0xe04e) }, |
92 | { USB_DEVICE(0x0489, 0xe056) }, |
93 | { USB_DEVICE(0x0489, 0xe04d) }, |
94 | { USB_DEVICE(0x04c5, 0x1330) }, |
95 | { USB_DEVICE(0x13d3, 0x3402) }, |
96 | { USB_DEVICE(0x0cf3, 0x3121) }, |
97 | { USB_DEVICE(0x0cf3, 0xe003) }, |
98 | |
99 | /* Atheros AR5BBU12 with sflash firmware */ |
100 | { USB_DEVICE(0x0489, 0xE02C) }, |
101 | |
102 | /* Atheros AR5BBU22 with sflash firmware */ |
103 | { USB_DEVICE(0x0489, 0xE03C) }, |
104 | { USB_DEVICE(0x0489, 0xE036) }, |
105 | |
106 | { } /* Terminating entry */ |
107 | }; |
108 | |
109 | MODULE_DEVICE_TABLE(usb, ath3k_table); |
110 | |
111 | #define BTUSB_ATH3012 0x80 |
112 | /* This table is to load patch and sysconfig files |
113 | * for AR3012 */ |
114 | static struct usb_device_id ath3k_blist_tbl[] = { |
115 | |
116 | /* Atheros AR3012 with sflash firmware*/ |
117 | { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 }, |
118 | { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, |
119 | { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, |
120 | { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, |
121 | { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 }, |
122 | { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, |
123 | { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, |
124 | { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, |
125 | { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, |
126 | { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, |
127 | { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, |
128 | { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, |
129 | { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, |
130 | { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, |
131 | { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, |
132 | { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, |
133 | { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, |
134 | { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, |
135 | { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, |
136 | { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, |
137 | { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, |
138 | { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, |
139 | |
140 | /* Atheros AR5BBU22 with sflash firmware */ |
141 | { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 }, |
142 | { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 }, |
143 | |
144 | { } /* Terminating entry */ |
145 | }; |
146 | |
147 | #define USB_REQ_DFU_DNLOAD 1 |
148 | #define BULK_SIZE 4096 |
149 | #define FW_HDR_SIZE 20 |
150 | |
151 | static int ath3k_load_firmware(struct usb_device *udev, |
152 | const struct firmware *firmware) |
153 | { |
154 | u8 *send_buf; |
155 | int err, pipe, len, size, sent = 0; |
156 | int count = firmware->size; |
157 | |
158 | BT_DBG("udev %p", udev); |
159 | |
160 | pipe = usb_sndctrlpipe(udev, 0); |
161 | |
162 | send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); |
163 | if (!send_buf) { |
164 | BT_ERR("Can't allocate memory chunk for firmware"); |
165 | return -ENOMEM; |
166 | } |
167 | |
168 | memcpy(send_buf, firmware->data, 20); |
169 | if ((err = usb_control_msg(udev, pipe, |
170 | USB_REQ_DFU_DNLOAD, |
171 | USB_TYPE_VENDOR, 0, 0, |
172 | send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { |
173 | BT_ERR("Can't change to loading configuration err"); |
174 | goto error; |
175 | } |
176 | sent += 20; |
177 | count -= 20; |
178 | |
179 | while (count) { |
180 | size = min_t(uint, count, BULK_SIZE); |
181 | pipe = usb_sndbulkpipe(udev, 0x02); |
182 | memcpy(send_buf, firmware->data + sent, size); |
183 | |
184 | err = usb_bulk_msg(udev, pipe, send_buf, size, |
185 | &len, 3000); |
186 | |
187 | if (err || (len != size)) { |
188 | BT_ERR("Error in firmware loading err = %d," |
189 | "len = %d, size = %d", err, len, size); |
190 | goto error; |
191 | } |
192 | |
193 | sent += size; |
194 | count -= size; |
195 | } |
196 | |
197 | error: |
198 | kfree(send_buf); |
199 | return err; |
200 | } |
201 | |
202 | static int ath3k_get_state(struct usb_device *udev, unsigned char *state) |
203 | { |
204 | int ret, pipe = 0; |
205 | char *buf; |
206 | |
207 | buf = kmalloc(sizeof(*buf), GFP_KERNEL); |
208 | if (!buf) |
209 | return -ENOMEM; |
210 | |
211 | pipe = usb_rcvctrlpipe(udev, 0); |
212 | ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE, |
213 | USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, |
214 | buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT); |
215 | |
216 | *state = *buf; |
217 | kfree(buf); |
218 | |
219 | return ret; |
220 | } |
221 | |
222 | static int ath3k_get_version(struct usb_device *udev, |
223 | struct ath3k_version *version) |
224 | { |
225 | int ret, pipe = 0; |
226 | struct ath3k_version *buf; |
227 | const int size = sizeof(*buf); |
228 | |
229 | buf = kmalloc(size, GFP_KERNEL); |
230 | if (!buf) |
231 | return -ENOMEM; |
232 | |
233 | pipe = usb_rcvctrlpipe(udev, 0); |
234 | ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION, |
235 | USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, |
236 | buf, size, USB_CTRL_SET_TIMEOUT); |
237 | |
238 | memcpy(version, buf, size); |
239 | kfree(buf); |
240 | |
241 | return ret; |
242 | } |
243 | |
244 | static int ath3k_load_fwfile(struct usb_device *udev, |
245 | const struct firmware *firmware) |
246 | { |
247 | u8 *send_buf; |
248 | int err, pipe, len, size, count, sent = 0; |
249 | int ret; |
250 | |
251 | count = firmware->size; |
252 | |
253 | send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); |
254 | if (!send_buf) { |
255 | BT_ERR("Can't allocate memory chunk for firmware"); |
256 | return -ENOMEM; |
257 | } |
258 | |
259 | size = min_t(uint, count, FW_HDR_SIZE); |
260 | memcpy(send_buf, firmware->data, size); |
261 | |
262 | pipe = usb_sndctrlpipe(udev, 0); |
263 | ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD, |
264 | USB_TYPE_VENDOR, 0, 0, send_buf, |
265 | size, USB_CTRL_SET_TIMEOUT); |
266 | if (ret < 0) { |
267 | BT_ERR("Can't change to loading configuration err"); |
268 | kfree(send_buf); |
269 | return ret; |
270 | } |
271 | |
272 | sent += size; |
273 | count -= size; |
274 | |
275 | while (count) { |
276 | size = min_t(uint, count, BULK_SIZE); |
277 | pipe = usb_sndbulkpipe(udev, 0x02); |
278 | |
279 | memcpy(send_buf, firmware->data + sent, size); |
280 | |
281 | err = usb_bulk_msg(udev, pipe, send_buf, size, |
282 | &len, 3000); |
283 | if (err || (len != size)) { |
284 | BT_ERR("Error in firmware loading err = %d," |
285 | "len = %d, size = %d", err, len, size); |
286 | kfree(send_buf); |
287 | return err; |
288 | } |
289 | sent += size; |
290 | count -= size; |
291 | } |
292 | |
293 | kfree(send_buf); |
294 | return 0; |
295 | } |
296 | |
297 | static int ath3k_switch_pid(struct usb_device *udev) |
298 | { |
299 | int pipe = 0; |
300 | |
301 | pipe = usb_sndctrlpipe(udev, 0); |
302 | return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID, |
303 | USB_TYPE_VENDOR, 0, 0, |
304 | NULL, 0, USB_CTRL_SET_TIMEOUT); |
305 | } |
306 | |
307 | static int ath3k_set_normal_mode(struct usb_device *udev) |
308 | { |
309 | unsigned char fw_state; |
310 | int pipe = 0, ret; |
311 | |
312 | ret = ath3k_get_state(udev, &fw_state); |
313 | if (ret < 0) { |
314 | BT_ERR("Can't get state to change to normal mode err"); |
315 | return ret; |
316 | } |
317 | |
318 | if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) { |
319 | BT_DBG("firmware was already in normal mode"); |
320 | return 0; |
321 | } |
322 | |
323 | pipe = usb_sndctrlpipe(udev, 0); |
324 | return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE, |
325 | USB_TYPE_VENDOR, 0, 0, |
326 | NULL, 0, USB_CTRL_SET_TIMEOUT); |
327 | } |
328 | |
329 | static int ath3k_load_patch(struct usb_device *udev) |
330 | { |
331 | unsigned char fw_state; |
332 | char filename[ATH3K_NAME_LEN] = {0}; |
333 | const struct firmware *firmware; |
334 | struct ath3k_version fw_version, pt_version; |
335 | int ret; |
336 | |
337 | ret = ath3k_get_state(udev, &fw_state); |
338 | if (ret < 0) { |
339 | BT_ERR("Can't get state to change to load ram patch err"); |
340 | return ret; |
341 | } |
342 | |
343 | if (fw_state & ATH3K_PATCH_UPDATE) { |
344 | BT_DBG("Patch was already downloaded"); |
345 | return 0; |
346 | } |
347 | |
348 | ret = ath3k_get_version(udev, &fw_version); |
349 | if (ret < 0) { |
350 | BT_ERR("Can't get version to change to load ram patch err"); |
351 | return ret; |
352 | } |
353 | |
354 | snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu", |
355 | fw_version.rom_version); |
356 | |
357 | ret = request_firmware(&firmware, filename, &udev->dev); |
358 | if (ret < 0) { |
359 | BT_ERR("Patch file not found %s", filename); |
360 | return ret; |
361 | } |
362 | |
363 | pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8); |
364 | pt_version.build_version = *(int *) |
365 | (firmware->data + firmware->size - 4); |
366 | |
367 | if ((pt_version.rom_version != fw_version.rom_version) || |
368 | (pt_version.build_version <= fw_version.build_version)) { |
369 | BT_ERR("Patch file version did not match with firmware"); |
370 | release_firmware(firmware); |
371 | return -EINVAL; |
372 | } |
373 | |
374 | ret = ath3k_load_fwfile(udev, firmware); |
375 | release_firmware(firmware); |
376 | |
377 | return ret; |
378 | } |
379 | |
380 | static int ath3k_load_syscfg(struct usb_device *udev) |
381 | { |
382 | unsigned char fw_state; |
383 | char filename[ATH3K_NAME_LEN] = {0}; |
384 | const struct firmware *firmware; |
385 | struct ath3k_version fw_version; |
386 | int clk_value, ret; |
387 | |
388 | ret = ath3k_get_state(udev, &fw_state); |
389 | if (ret < 0) { |
390 | BT_ERR("Can't get state to change to load configuration err"); |
391 | return -EBUSY; |
392 | } |
393 | |
394 | ret = ath3k_get_version(udev, &fw_version); |
395 | if (ret < 0) { |
396 | BT_ERR("Can't get version to change to load ram patch err"); |
397 | return ret; |
398 | } |
399 | |
400 | switch (fw_version.ref_clock) { |
401 | |
402 | case ATH3K_XTAL_FREQ_26M: |
403 | clk_value = 26; |
404 | break; |
405 | case ATH3K_XTAL_FREQ_40M: |
406 | clk_value = 40; |
407 | break; |
408 | case ATH3K_XTAL_FREQ_19P2: |
409 | clk_value = 19; |
410 | break; |
411 | default: |
412 | clk_value = 0; |
413 | break; |
414 | } |
415 | |
416 | snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s", |
417 | fw_version.rom_version, clk_value, ".dfu"); |
418 | |
419 | ret = request_firmware(&firmware, filename, &udev->dev); |
420 | if (ret < 0) { |
421 | BT_ERR("Configuration file not found %s", filename); |
422 | return ret; |
423 | } |
424 | |
425 | ret = ath3k_load_fwfile(udev, firmware); |
426 | release_firmware(firmware); |
427 | |
428 | return ret; |
429 | } |
430 | |
431 | static int ath3k_probe(struct usb_interface *intf, |
432 | const struct usb_device_id *id) |
433 | { |
434 | const struct firmware *firmware; |
435 | struct usb_device *udev = interface_to_usbdev(intf); |
436 | int ret; |
437 | |
438 | BT_DBG("intf %p id %p", intf, id); |
439 | |
440 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) |
441 | return -ENODEV; |
442 | |
443 | /* match device ID in ath3k blacklist table */ |
444 | if (!id->driver_info) { |
445 | const struct usb_device_id *match; |
446 | match = usb_match_id(intf, ath3k_blist_tbl); |
447 | if (match) |
448 | id = match; |
449 | } |
450 | |
451 | /* load patch and sysconfig files for AR3012 */ |
452 | if (id->driver_info & BTUSB_ATH3012) { |
453 | |
454 | /* New firmware with patch and sysconfig files already loaded */ |
455 | if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001) |
456 | return -ENODEV; |
457 | |
458 | ret = ath3k_load_patch(udev); |
459 | if (ret < 0) { |
460 | BT_ERR("Loading patch file failed"); |
461 | return ret; |
462 | } |
463 | ret = ath3k_load_syscfg(udev); |
464 | if (ret < 0) { |
465 | BT_ERR("Loading sysconfig file failed"); |
466 | return ret; |
467 | } |
468 | ret = ath3k_set_normal_mode(udev); |
469 | if (ret < 0) { |
470 | BT_ERR("Set normal mode failed"); |
471 | return ret; |
472 | } |
473 | ath3k_switch_pid(udev); |
474 | return 0; |
475 | } |
476 | |
477 | ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev); |
478 | if (ret < 0) { |
479 | if (ret == -ENOENT) |
480 | BT_ERR("Firmware file \"%s\" not found", |
481 | ATH3K_FIRMWARE); |
482 | else |
483 | BT_ERR("Firmware file \"%s\" request failed (err=%d)", |
484 | ATH3K_FIRMWARE, ret); |
485 | return ret; |
486 | } |
487 | |
488 | ret = ath3k_load_firmware(udev, firmware); |
489 | release_firmware(firmware); |
490 | |
491 | return ret; |
492 | } |
493 | |
494 | static void ath3k_disconnect(struct usb_interface *intf) |
495 | { |
496 | BT_DBG("ath3k_disconnect intf %p", intf); |
497 | } |
498 | |
499 | static struct usb_driver ath3k_driver = { |
500 | .name = "ath3k", |
501 | .probe = ath3k_probe, |
502 | .disconnect = ath3k_disconnect, |
503 | .id_table = ath3k_table, |
504 | .disable_hub_initiated_lpm = 1, |
505 | }; |
506 | |
507 | module_usb_driver(ath3k_driver); |
508 | |
509 | MODULE_AUTHOR("Atheros Communications"); |
510 | MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); |
511 | MODULE_VERSION(VERSION); |
512 | MODULE_LICENSE("GPL"); |
513 | MODULE_FIRMWARE(ATH3K_FIRMWARE); |
514 |
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