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