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9670d80a VK |
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" | |
c3eae82a | 33 | #define ATH3K_FIRMWARE "ath3k-1.fw" |
9670d80a | 34 | |
d9f51b51 BS |
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 | }; | |
9670d80a VK |
59 | |
60 | static struct usb_device_id ath3k_table[] = { | |
61 | /* Atheros AR3011 */ | |
62 | { USB_DEVICE(0x0CF3, 0x3000) }, | |
be93112a BS |
63 | |
64 | /* Atheros AR3011 with sflash firmware*/ | |
65 | { USB_DEVICE(0x0CF3, 0x3002) }, | |
2a7bcccc | 66 | { USB_DEVICE(0x13d3, 0x3304) }, |
8e7c3d2e | 67 | { USB_DEVICE(0x0930, 0x0215) }, |
be93112a | 68 | |
509e7861 CYC |
69 | /* Atheros AR9285 Malbec with sflash firmware */ |
70 | { USB_DEVICE(0x03F0, 0x311D) }, | |
d9f51b51 BS |
71 | |
72 | /* Atheros AR3012 with sflash firmware*/ | |
73 | { USB_DEVICE(0x0CF3, 0x3004) }, | |
74 | ||
e9036e33 CYC |
75 | /* Atheros AR5BBU12 with sflash firmware */ |
76 | { USB_DEVICE(0x0489, 0xE02C) }, | |
b67afe7f | 77 | |
9670d80a VK |
78 | { } /* Terminating entry */ |
79 | }; | |
80 | ||
81 | MODULE_DEVICE_TABLE(usb, ath3k_table); | |
82 | ||
d9f51b51 BS |
83 | #define BTUSB_ATH3012 0x80 |
84 | /* This table is to load patch and sysconfig files | |
85 | * for AR3012 */ | |
86 | static struct usb_device_id ath3k_blist_tbl[] = { | |
87 | ||
88 | /* Atheros AR3012 with sflash firmware*/ | |
89 | { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, | |
90 | ||
91 | { } /* Terminating entry */ | |
92 | }; | |
93 | ||
9670d80a VK |
94 | #define USB_REQ_DFU_DNLOAD 1 |
95 | #define BULK_SIZE 4096 | |
d9f51b51 | 96 | #define FW_HDR_SIZE 20 |
9670d80a | 97 | |
86e09287 AH |
98 | static int ath3k_load_firmware(struct usb_device *udev, |
99 | const struct firmware *firmware) | |
9670d80a VK |
100 | { |
101 | u8 *send_buf; | |
102 | int err, pipe, len, size, sent = 0; | |
86e09287 | 103 | int count = firmware->size; |
9670d80a | 104 | |
86e09287 | 105 | BT_DBG("udev %p", udev); |
9670d80a | 106 | |
86e09287 | 107 | pipe = usb_sndctrlpipe(udev, 0); |
9670d80a | 108 | |
52a1020e | 109 | send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); |
86e09287 AH |
110 | if (!send_buf) { |
111 | BT_ERR("Can't allocate memory chunk for firmware"); | |
112 | return -ENOMEM; | |
113 | } | |
114 | ||
115 | memcpy(send_buf, firmware->data, 20); | |
116 | if ((err = usb_control_msg(udev, pipe, | |
9670d80a VK |
117 | USB_REQ_DFU_DNLOAD, |
118 | USB_TYPE_VENDOR, 0, 0, | |
86e09287 | 119 | send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { |
9670d80a | 120 | BT_ERR("Can't change to loading configuration err"); |
86e09287 | 121 | goto error; |
9670d80a VK |
122 | } |
123 | sent += 20; | |
124 | count -= 20; | |
125 | ||
9670d80a VK |
126 | while (count) { |
127 | size = min_t(uint, count, BULK_SIZE); | |
86e09287 AH |
128 | pipe = usb_sndbulkpipe(udev, 0x02); |
129 | memcpy(send_buf, firmware->data + sent, size); | |
9670d80a | 130 | |
86e09287 | 131 | err = usb_bulk_msg(udev, pipe, send_buf, size, |
9670d80a VK |
132 | &len, 3000); |
133 | ||
134 | if (err || (len != size)) { | |
135 | BT_ERR("Error in firmware loading err = %d," | |
136 | "len = %d, size = %d", err, len, size); | |
137 | goto error; | |
138 | } | |
139 | ||
140 | sent += size; | |
141 | count -= size; | |
142 | } | |
143 | ||
9670d80a VK |
144 | error: |
145 | kfree(send_buf); | |
146 | return err; | |
147 | } | |
148 | ||
d9f51b51 BS |
149 | static int ath3k_get_state(struct usb_device *udev, unsigned char *state) |
150 | { | |
151 | int pipe = 0; | |
152 | ||
153 | pipe = usb_rcvctrlpipe(udev, 0); | |
154 | return usb_control_msg(udev, pipe, ATH3K_GETSTATE, | |
155 | USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, | |
156 | state, 0x01, USB_CTRL_SET_TIMEOUT); | |
157 | } | |
158 | ||
159 | static int ath3k_get_version(struct usb_device *udev, | |
160 | struct ath3k_version *version) | |
161 | { | |
162 | int pipe = 0; | |
163 | ||
164 | pipe = usb_rcvctrlpipe(udev, 0); | |
165 | return usb_control_msg(udev, pipe, ATH3K_GETVERSION, | |
166 | USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, version, | |
167 | sizeof(struct ath3k_version), | |
168 | USB_CTRL_SET_TIMEOUT); | |
169 | } | |
170 | ||
171 | static int ath3k_load_fwfile(struct usb_device *udev, | |
172 | const struct firmware *firmware) | |
173 | { | |
174 | u8 *send_buf; | |
175 | int err, pipe, len, size, count, sent = 0; | |
176 | int ret; | |
177 | ||
178 | count = firmware->size; | |
179 | ||
52a1020e | 180 | send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); |
d9f51b51 BS |
181 | if (!send_buf) { |
182 | BT_ERR("Can't allocate memory chunk for firmware"); | |
183 | return -ENOMEM; | |
184 | } | |
185 | ||
186 | size = min_t(uint, count, FW_HDR_SIZE); | |
187 | memcpy(send_buf, firmware->data, size); | |
188 | ||
189 | pipe = usb_sndctrlpipe(udev, 0); | |
190 | ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD, | |
191 | USB_TYPE_VENDOR, 0, 0, send_buf, | |
192 | size, USB_CTRL_SET_TIMEOUT); | |
193 | if (ret < 0) { | |
194 | BT_ERR("Can't change to loading configuration err"); | |
195 | kfree(send_buf); | |
196 | return ret; | |
197 | } | |
198 | ||
199 | sent += size; | |
200 | count -= size; | |
201 | ||
202 | while (count) { | |
203 | size = min_t(uint, count, BULK_SIZE); | |
204 | pipe = usb_sndbulkpipe(udev, 0x02); | |
205 | ||
206 | memcpy(send_buf, firmware->data + sent, size); | |
207 | ||
208 | err = usb_bulk_msg(udev, pipe, send_buf, size, | |
209 | &len, 3000); | |
210 | if (err || (len != size)) { | |
211 | BT_ERR("Error in firmware loading err = %d," | |
212 | "len = %d, size = %d", err, len, size); | |
213 | kfree(send_buf); | |
214 | return err; | |
215 | } | |
216 | sent += size; | |
217 | count -= size; | |
218 | } | |
219 | ||
220 | kfree(send_buf); | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static int ath3k_switch_pid(struct usb_device *udev) | |
225 | { | |
226 | int pipe = 0; | |
227 | ||
228 | pipe = usb_sndctrlpipe(udev, 0); | |
229 | return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID, | |
230 | USB_TYPE_VENDOR, 0, 0, | |
231 | NULL, 0, USB_CTRL_SET_TIMEOUT); | |
232 | } | |
233 | ||
234 | static int ath3k_set_normal_mode(struct usb_device *udev) | |
235 | { | |
236 | unsigned char fw_state; | |
237 | int pipe = 0, ret; | |
238 | ||
239 | ret = ath3k_get_state(udev, &fw_state); | |
240 | if (ret < 0) { | |
241 | BT_ERR("Can't get state to change to normal mode err"); | |
242 | return ret; | |
243 | } | |
244 | ||
245 | if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) { | |
246 | BT_DBG("firmware was already in normal mode"); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | pipe = usb_sndctrlpipe(udev, 0); | |
251 | return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE, | |
252 | USB_TYPE_VENDOR, 0, 0, | |
253 | NULL, 0, USB_CTRL_SET_TIMEOUT); | |
254 | } | |
255 | ||
256 | static int ath3k_load_patch(struct usb_device *udev) | |
257 | { | |
258 | unsigned char fw_state; | |
259 | char filename[ATH3K_NAME_LEN] = {0}; | |
260 | const struct firmware *firmware; | |
261 | struct ath3k_version fw_version, pt_version; | |
262 | int ret; | |
263 | ||
264 | ret = ath3k_get_state(udev, &fw_state); | |
265 | if (ret < 0) { | |
266 | BT_ERR("Can't get state to change to load ram patch err"); | |
267 | return ret; | |
268 | } | |
269 | ||
270 | if (fw_state & ATH3K_PATCH_UPDATE) { | |
271 | BT_DBG("Patch was already downloaded"); | |
272 | return 0; | |
273 | } | |
274 | ||
275 | ret = ath3k_get_version(udev, &fw_version); | |
276 | if (ret < 0) { | |
277 | BT_ERR("Can't get version to change to load ram patch err"); | |
278 | return ret; | |
279 | } | |
280 | ||
281 | snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu", | |
282 | fw_version.rom_version); | |
283 | ||
284 | ret = request_firmware(&firmware, filename, &udev->dev); | |
285 | if (ret < 0) { | |
286 | BT_ERR("Patch file not found %s", filename); | |
287 | return ret; | |
288 | } | |
289 | ||
290 | pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8); | |
291 | pt_version.build_version = *(int *) | |
292 | (firmware->data + firmware->size - 4); | |
293 | ||
294 | if ((pt_version.rom_version != fw_version.rom_version) || | |
295 | (pt_version.build_version <= fw_version.build_version)) { | |
296 | BT_ERR("Patch file version did not match with firmware"); | |
297 | release_firmware(firmware); | |
298 | return -EINVAL; | |
299 | } | |
300 | ||
301 | ret = ath3k_load_fwfile(udev, firmware); | |
302 | release_firmware(firmware); | |
303 | ||
304 | return ret; | |
305 | } | |
306 | ||
307 | static int ath3k_load_syscfg(struct usb_device *udev) | |
308 | { | |
309 | unsigned char fw_state; | |
310 | char filename[ATH3K_NAME_LEN] = {0}; | |
311 | const struct firmware *firmware; | |
312 | struct ath3k_version fw_version; | |
313 | int clk_value, ret; | |
314 | ||
315 | ret = ath3k_get_state(udev, &fw_state); | |
316 | if (ret < 0) { | |
317 | BT_ERR("Can't get state to change to load configration err"); | |
318 | return -EBUSY; | |
319 | } | |
320 | ||
321 | ret = ath3k_get_version(udev, &fw_version); | |
322 | if (ret < 0) { | |
323 | BT_ERR("Can't get version to change to load ram patch err"); | |
324 | return ret; | |
325 | } | |
326 | ||
327 | switch (fw_version.ref_clock) { | |
328 | ||
329 | case ATH3K_XTAL_FREQ_26M: | |
330 | clk_value = 26; | |
331 | break; | |
332 | case ATH3K_XTAL_FREQ_40M: | |
333 | clk_value = 40; | |
334 | break; | |
335 | case ATH3K_XTAL_FREQ_19P2: | |
336 | clk_value = 19; | |
337 | break; | |
338 | default: | |
339 | clk_value = 0; | |
340 | break; | |
341 | } | |
342 | ||
343 | snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s", | |
344 | fw_version.rom_version, clk_value, ".dfu"); | |
345 | ||
346 | ret = request_firmware(&firmware, filename, &udev->dev); | |
347 | if (ret < 0) { | |
348 | BT_ERR("Configuration file not found %s", filename); | |
349 | return ret; | |
350 | } | |
351 | ||
352 | ret = ath3k_load_fwfile(udev, firmware); | |
353 | release_firmware(firmware); | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
9670d80a VK |
358 | static int ath3k_probe(struct usb_interface *intf, |
359 | const struct usb_device_id *id) | |
360 | { | |
361 | const struct firmware *firmware; | |
362 | struct usb_device *udev = interface_to_usbdev(intf); | |
84f0e17f | 363 | int ret; |
9670d80a VK |
364 | |
365 | BT_DBG("intf %p id %p", intf, id); | |
366 | ||
367 | if (intf->cur_altsetting->desc.bInterfaceNumber != 0) | |
368 | return -ENODEV; | |
369 | ||
d9f51b51 BS |
370 | /* match device ID in ath3k blacklist table */ |
371 | if (!id->driver_info) { | |
372 | const struct usb_device_id *match; | |
373 | match = usb_match_id(intf, ath3k_blist_tbl); | |
374 | if (match) | |
375 | id = match; | |
376 | } | |
377 | ||
378 | /* load patch and sysconfig files for AR3012 */ | |
379 | if (id->driver_info & BTUSB_ATH3012) { | |
2d25f8b4 SL |
380 | |
381 | /* New firmware with patch and sysconfig files already loaded */ | |
382 | if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001) | |
383 | return -ENODEV; | |
384 | ||
d9f51b51 BS |
385 | ret = ath3k_load_patch(udev); |
386 | if (ret < 0) { | |
387 | BT_ERR("Loading patch file failed"); | |
388 | return ret; | |
389 | } | |
390 | ret = ath3k_load_syscfg(udev); | |
391 | if (ret < 0) { | |
392 | BT_ERR("Loading sysconfig file failed"); | |
393 | return ret; | |
394 | } | |
395 | ret = ath3k_set_normal_mode(udev); | |
396 | if (ret < 0) { | |
397 | BT_ERR("Set normal mode failed"); | |
398 | return ret; | |
399 | } | |
400 | ath3k_switch_pid(udev); | |
401 | return 0; | |
402 | } | |
403 | ||
c3eae82a PF |
404 | ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev); |
405 | if (ret < 0) { | |
406 | if (ret == -ENOENT) | |
407 | BT_ERR("Firmware file \"%s\" not found", | |
408 | ATH3K_FIRMWARE); | |
409 | else | |
410 | BT_ERR("Firmware file \"%s\" request failed (err=%d)", | |
411 | ATH3K_FIRMWARE, ret); | |
412 | return ret; | |
9670d80a VK |
413 | } |
414 | ||
84f0e17f | 415 | ret = ath3k_load_firmware(udev, firmware); |
86e09287 | 416 | release_firmware(firmware); |
9670d80a | 417 | |
84f0e17f | 418 | return ret; |
9670d80a VK |
419 | } |
420 | ||
421 | static void ath3k_disconnect(struct usb_interface *intf) | |
422 | { | |
9670d80a | 423 | BT_DBG("ath3k_disconnect intf %p", intf); |
9670d80a VK |
424 | } |
425 | ||
426 | static struct usb_driver ath3k_driver = { | |
427 | .name = "ath3k", | |
428 | .probe = ath3k_probe, | |
429 | .disconnect = ath3k_disconnect, | |
430 | .id_table = ath3k_table, | |
431 | }; | |
432 | ||
93f1508c | 433 | module_usb_driver(ath3k_driver); |
9670d80a VK |
434 | |
435 | MODULE_AUTHOR("Atheros Communications"); | |
436 | MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); | |
437 | MODULE_VERSION(VERSION); | |
438 | MODULE_LICENSE("GPL"); | |
c3eae82a | 439 | MODULE_FIRMWARE(ATH3K_FIRMWARE); |