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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-drv.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called LICENSE.GPL.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include <linux/completion.h>
64 #include <linux/dma-mapping.h>
65 #include <linux/firmware.h>
66 #include <linux/module.h>
67
68 #include "iwl-drv.h"
69 #include "iwl-trans.h"
70 #include "iwl-op-mode.h"
71 #include "iwl-agn-hw.h"
72 #include "iwl-fw.h"
73 #include "iwl-config.h"
74 #include "iwl-modparams.h"
75
76 /* private includes */
77 #include "iwl-fw-file.h"
78
79 /**
80 * struct iwl_drv - drv common data
81 * @fw: the iwl_fw structure
82 * @op_mode: the running op_mode
83 * @trans: transport layer
84 * @dev: for debug prints only
85 * @cfg: configuration struct
86 * @fw_index: firmware revision to try loading
87 * @firmware_name: composite filename of ucode file to load
88 * @request_firmware_complete: the firmware has been obtained from user space
89 */
90 struct iwl_drv {
91 struct iwl_fw fw;
92
93 struct iwl_op_mode *op_mode;
94 struct iwl_trans *trans;
95 struct device *dev;
96 const struct iwl_cfg *cfg;
97
98 int fw_index; /* firmware we're trying to load */
99 char firmware_name[25]; /* name of firmware file to load */
100
101 struct completion request_firmware_complete;
102 };
103
104
105
106 /*
107 * struct fw_sec: Just for the image parsing proccess.
108 * For the fw storage we are using struct fw_desc.
109 */
110 struct fw_sec {
111 const void *data; /* the sec data */
112 size_t size; /* section size */
113 u32 offset; /* offset of writing in the device */
114 };
115
116 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
117 {
118 if (desc->v_addr)
119 dma_free_coherent(drv->trans->dev, desc->len,
120 desc->v_addr, desc->p_addr);
121 desc->v_addr = NULL;
122 desc->len = 0;
123 }
124
125 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
126 {
127 int i;
128 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
129 iwl_free_fw_desc(drv, &img->sec[i]);
130 }
131
132 static void iwl_dealloc_ucode(struct iwl_drv *drv)
133 {
134 int i;
135 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
136 iwl_free_fw_img(drv, drv->fw.img + i);
137 }
138
139 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
140 struct fw_sec *sec)
141 {
142 if (!sec || !sec->size) {
143 desc->v_addr = NULL;
144 return -EINVAL;
145 }
146
147 desc->v_addr = dma_alloc_coherent(drv->trans->dev, sec->size,
148 &desc->p_addr, GFP_KERNEL);
149 if (!desc->v_addr)
150 return -ENOMEM;
151
152 desc->len = sec->size;
153 desc->offset = sec->offset;
154 memcpy(desc->v_addr, sec->data, sec->size);
155 return 0;
156 }
157
158 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
159
160 #define UCODE_EXPERIMENTAL_INDEX 100
161 #define UCODE_EXPERIMENTAL_TAG "exp"
162
163 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
164 {
165 const char *name_pre = drv->cfg->fw_name_pre;
166 char tag[8];
167
168 if (first) {
169 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
170 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
171 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
172 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
173 #endif
174 drv->fw_index = drv->cfg->ucode_api_max;
175 sprintf(tag, "%d", drv->fw_index);
176 } else {
177 drv->fw_index--;
178 sprintf(tag, "%d", drv->fw_index);
179 }
180
181 if (drv->fw_index < drv->cfg->ucode_api_min) {
182 IWL_ERR(drv, "no suitable firmware found!\n");
183 return -ENOENT;
184 }
185
186 sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
187
188 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
189 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
190 ? "EXPERIMENTAL " : "",
191 drv->firmware_name);
192
193 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
194 drv->trans->dev,
195 GFP_KERNEL, drv, iwl_ucode_callback);
196 }
197
198 struct fw_img_parsing {
199 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
200 int sec_counter;
201 };
202
203 /*
204 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
205 */
206 struct fw_sec_parsing {
207 __le32 offset;
208 const u8 data[];
209 } __packed;
210
211 /**
212 * struct iwl_tlv_calib_data - parse the default calib data from TLV
213 *
214 * @ucode_type: the uCode to which the following default calib relates.
215 * @calib: default calibrations.
216 */
217 struct iwl_tlv_calib_data {
218 __le32 ucode_type;
219 __le64 calib;
220 } __packed;
221
222 struct iwl_firmware_pieces {
223 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
224
225 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
226 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
227 };
228
229 /*
230 * These functions are just to extract uCode section data from the pieces
231 * structure.
232 */
233 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
234 enum iwl_ucode_type type,
235 int sec)
236 {
237 return &pieces->img[type].sec[sec];
238 }
239
240 static void set_sec_data(struct iwl_firmware_pieces *pieces,
241 enum iwl_ucode_type type,
242 int sec,
243 const void *data)
244 {
245 pieces->img[type].sec[sec].data = data;
246 }
247
248 static void set_sec_size(struct iwl_firmware_pieces *pieces,
249 enum iwl_ucode_type type,
250 int sec,
251 size_t size)
252 {
253 pieces->img[type].sec[sec].size = size;
254 }
255
256 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
257 enum iwl_ucode_type type,
258 int sec)
259 {
260 return pieces->img[type].sec[sec].size;
261 }
262
263 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
264 enum iwl_ucode_type type,
265 int sec,
266 u32 offset)
267 {
268 pieces->img[type].sec[sec].offset = offset;
269 }
270
271 /*
272 * Gets uCode section from tlv.
273 */
274 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
275 const void *data, enum iwl_ucode_type type,
276 int size)
277 {
278 struct fw_img_parsing *img;
279 struct fw_sec *sec;
280 struct fw_sec_parsing *sec_parse;
281
282 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
283 return -1;
284
285 sec_parse = (struct fw_sec_parsing *)data;
286
287 img = &pieces->img[type];
288 sec = &img->sec[img->sec_counter];
289
290 sec->offset = le32_to_cpu(sec_parse->offset);
291 sec->data = sec_parse->data;
292 sec->size = size - sizeof(sec_parse->offset);
293
294 ++img->sec_counter;
295
296 return 0;
297 }
298
299 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
300 {
301 struct iwl_tlv_calib_data *def_calib =
302 (struct iwl_tlv_calib_data *)data;
303 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
304 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
305 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
306 ucode_type);
307 return -EINVAL;
308 }
309 drv->fw.default_calib[ucode_type] = le64_to_cpu(def_calib->calib);
310 return 0;
311 }
312
313 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
314 const struct firmware *ucode_raw,
315 struct iwl_firmware_pieces *pieces)
316 {
317 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
318 u32 api_ver, hdr_size, build;
319 char buildstr[25];
320 const u8 *src;
321
322 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
323 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
324
325 switch (api_ver) {
326 default:
327 hdr_size = 28;
328 if (ucode_raw->size < hdr_size) {
329 IWL_ERR(drv, "File size too small!\n");
330 return -EINVAL;
331 }
332 build = le32_to_cpu(ucode->u.v2.build);
333 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
334 le32_to_cpu(ucode->u.v2.inst_size));
335 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
336 le32_to_cpu(ucode->u.v2.data_size));
337 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
338 le32_to_cpu(ucode->u.v2.init_size));
339 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
340 le32_to_cpu(ucode->u.v2.init_data_size));
341 src = ucode->u.v2.data;
342 break;
343 case 0:
344 case 1:
345 case 2:
346 hdr_size = 24;
347 if (ucode_raw->size < hdr_size) {
348 IWL_ERR(drv, "File size too small!\n");
349 return -EINVAL;
350 }
351 build = 0;
352 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
353 le32_to_cpu(ucode->u.v1.inst_size));
354 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
355 le32_to_cpu(ucode->u.v1.data_size));
356 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
357 le32_to_cpu(ucode->u.v1.init_size));
358 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
359 le32_to_cpu(ucode->u.v1.init_data_size));
360 src = ucode->u.v1.data;
361 break;
362 }
363
364 if (build)
365 sprintf(buildstr, " build %u%s", build,
366 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
367 ? " (EXP)" : "");
368 else
369 buildstr[0] = '\0';
370
371 snprintf(drv->fw.fw_version,
372 sizeof(drv->fw.fw_version),
373 "%u.%u.%u.%u%s",
374 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
375 IWL_UCODE_MINOR(drv->fw.ucode_ver),
376 IWL_UCODE_API(drv->fw.ucode_ver),
377 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
378 buildstr);
379
380 /* Verify size of file vs. image size info in file's header */
381
382 if (ucode_raw->size != hdr_size +
383 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
384 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
385 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
386 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
387
388 IWL_ERR(drv,
389 "uCode file size %d does not match expected size\n",
390 (int)ucode_raw->size);
391 return -EINVAL;
392 }
393
394
395 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
396 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
397 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
398 IWLAGN_RTC_INST_LOWER_BOUND);
399 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
400 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
401 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
402 IWLAGN_RTC_DATA_LOWER_BOUND);
403 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
404 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
405 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
406 IWLAGN_RTC_INST_LOWER_BOUND);
407 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
408 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
409 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
410 IWLAGN_RTC_DATA_LOWER_BOUND);
411 return 0;
412 }
413
414 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
415 const struct firmware *ucode_raw,
416 struct iwl_firmware_pieces *pieces,
417 struct iwl_ucode_capabilities *capa)
418 {
419 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
420 struct iwl_ucode_tlv *tlv;
421 size_t len = ucode_raw->size;
422 const u8 *data;
423 u32 tlv_len;
424 enum iwl_ucode_tlv_type tlv_type;
425 const u8 *tlv_data;
426 char buildstr[25];
427 u32 build;
428
429 if (len < sizeof(*ucode)) {
430 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
431 return -EINVAL;
432 }
433
434 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
435 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
436 le32_to_cpu(ucode->magic));
437 return -EINVAL;
438 }
439
440 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
441 build = le32_to_cpu(ucode->build);
442
443 if (build)
444 sprintf(buildstr, " build %u%s", build,
445 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
446 ? " (EXP)" : "");
447 else
448 buildstr[0] = '\0';
449
450 snprintf(drv->fw.fw_version,
451 sizeof(drv->fw.fw_version),
452 "%u.%u.%u.%u%s",
453 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
454 IWL_UCODE_MINOR(drv->fw.ucode_ver),
455 IWL_UCODE_API(drv->fw.ucode_ver),
456 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
457 buildstr);
458
459 data = ucode->data;
460
461 len -= sizeof(*ucode);
462
463 while (len >= sizeof(*tlv)) {
464 len -= sizeof(*tlv);
465 tlv = (void *)data;
466
467 tlv_len = le32_to_cpu(tlv->length);
468 tlv_type = le32_to_cpu(tlv->type);
469 tlv_data = tlv->data;
470
471 if (len < tlv_len) {
472 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
473 len, tlv_len);
474 return -EINVAL;
475 }
476 len -= ALIGN(tlv_len, 4);
477 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
478
479 switch (tlv_type) {
480 case IWL_UCODE_TLV_INST:
481 set_sec_data(pieces, IWL_UCODE_REGULAR,
482 IWL_UCODE_SECTION_INST, tlv_data);
483 set_sec_size(pieces, IWL_UCODE_REGULAR,
484 IWL_UCODE_SECTION_INST, tlv_len);
485 set_sec_offset(pieces, IWL_UCODE_REGULAR,
486 IWL_UCODE_SECTION_INST,
487 IWLAGN_RTC_INST_LOWER_BOUND);
488 break;
489 case IWL_UCODE_TLV_DATA:
490 set_sec_data(pieces, IWL_UCODE_REGULAR,
491 IWL_UCODE_SECTION_DATA, tlv_data);
492 set_sec_size(pieces, IWL_UCODE_REGULAR,
493 IWL_UCODE_SECTION_DATA, tlv_len);
494 set_sec_offset(pieces, IWL_UCODE_REGULAR,
495 IWL_UCODE_SECTION_DATA,
496 IWLAGN_RTC_DATA_LOWER_BOUND);
497 break;
498 case IWL_UCODE_TLV_INIT:
499 set_sec_data(pieces, IWL_UCODE_INIT,
500 IWL_UCODE_SECTION_INST, tlv_data);
501 set_sec_size(pieces, IWL_UCODE_INIT,
502 IWL_UCODE_SECTION_INST, tlv_len);
503 set_sec_offset(pieces, IWL_UCODE_INIT,
504 IWL_UCODE_SECTION_INST,
505 IWLAGN_RTC_INST_LOWER_BOUND);
506 break;
507 case IWL_UCODE_TLV_INIT_DATA:
508 set_sec_data(pieces, IWL_UCODE_INIT,
509 IWL_UCODE_SECTION_DATA, tlv_data);
510 set_sec_size(pieces, IWL_UCODE_INIT,
511 IWL_UCODE_SECTION_DATA, tlv_len);
512 set_sec_offset(pieces, IWL_UCODE_INIT,
513 IWL_UCODE_SECTION_DATA,
514 IWLAGN_RTC_DATA_LOWER_BOUND);
515 break;
516 case IWL_UCODE_TLV_BOOT:
517 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
518 break;
519 case IWL_UCODE_TLV_PROBE_MAX_LEN:
520 if (tlv_len != sizeof(u32))
521 goto invalid_tlv_len;
522 capa->max_probe_length =
523 le32_to_cpup((__le32 *)tlv_data);
524 break;
525 case IWL_UCODE_TLV_PAN:
526 if (tlv_len)
527 goto invalid_tlv_len;
528 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
529 break;
530 case IWL_UCODE_TLV_FLAGS:
531 /* must be at least one u32 */
532 if (tlv_len < sizeof(u32))
533 goto invalid_tlv_len;
534 /* and a proper number of u32s */
535 if (tlv_len % sizeof(u32))
536 goto invalid_tlv_len;
537 /*
538 * This driver only reads the first u32 as
539 * right now no more features are defined,
540 * if that changes then either the driver
541 * will not work with the new firmware, or
542 * it'll not take advantage of new features.
543 */
544 capa->flags = le32_to_cpup((__le32 *)tlv_data);
545 break;
546 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
547 if (tlv_len != sizeof(u32))
548 goto invalid_tlv_len;
549 pieces->init_evtlog_ptr =
550 le32_to_cpup((__le32 *)tlv_data);
551 break;
552 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
553 if (tlv_len != sizeof(u32))
554 goto invalid_tlv_len;
555 pieces->init_evtlog_size =
556 le32_to_cpup((__le32 *)tlv_data);
557 break;
558 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
559 if (tlv_len != sizeof(u32))
560 goto invalid_tlv_len;
561 pieces->init_errlog_ptr =
562 le32_to_cpup((__le32 *)tlv_data);
563 break;
564 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
565 if (tlv_len != sizeof(u32))
566 goto invalid_tlv_len;
567 pieces->inst_evtlog_ptr =
568 le32_to_cpup((__le32 *)tlv_data);
569 break;
570 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
571 if (tlv_len != sizeof(u32))
572 goto invalid_tlv_len;
573 pieces->inst_evtlog_size =
574 le32_to_cpup((__le32 *)tlv_data);
575 break;
576 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
577 if (tlv_len != sizeof(u32))
578 goto invalid_tlv_len;
579 pieces->inst_errlog_ptr =
580 le32_to_cpup((__le32 *)tlv_data);
581 break;
582 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
583 if (tlv_len)
584 goto invalid_tlv_len;
585 drv->fw.enhance_sensitivity_table = true;
586 break;
587 case IWL_UCODE_TLV_WOWLAN_INST:
588 set_sec_data(pieces, IWL_UCODE_WOWLAN,
589 IWL_UCODE_SECTION_INST, tlv_data);
590 set_sec_size(pieces, IWL_UCODE_WOWLAN,
591 IWL_UCODE_SECTION_INST, tlv_len);
592 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
593 IWL_UCODE_SECTION_INST,
594 IWLAGN_RTC_INST_LOWER_BOUND);
595 break;
596 case IWL_UCODE_TLV_WOWLAN_DATA:
597 set_sec_data(pieces, IWL_UCODE_WOWLAN,
598 IWL_UCODE_SECTION_DATA, tlv_data);
599 set_sec_size(pieces, IWL_UCODE_WOWLAN,
600 IWL_UCODE_SECTION_DATA, tlv_len);
601 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
602 IWL_UCODE_SECTION_DATA,
603 IWLAGN_RTC_DATA_LOWER_BOUND);
604 break;
605 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
606 if (tlv_len != sizeof(u32))
607 goto invalid_tlv_len;
608 capa->standard_phy_calibration_size =
609 le32_to_cpup((__le32 *)tlv_data);
610 break;
611 case IWL_UCODE_TLV_SEC_RT:
612 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
613 tlv_len);
614 drv->fw.mvm_fw = true;
615 break;
616 case IWL_UCODE_TLV_SEC_INIT:
617 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
618 tlv_len);
619 drv->fw.mvm_fw = true;
620 break;
621 case IWL_UCODE_TLV_SEC_WOWLAN:
622 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
623 tlv_len);
624 drv->fw.mvm_fw = true;
625 break;
626 case IWL_UCODE_TLV_DEF_CALIB:
627 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
628 goto invalid_tlv_len;
629 if (iwl_set_default_calib(drv, tlv_data))
630 goto tlv_error;
631 break;
632 case IWL_UCODE_TLV_PHY_SKU:
633 if (tlv_len != sizeof(u32))
634 goto invalid_tlv_len;
635 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
636 break;
637 default:
638 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
639 break;
640 }
641 }
642
643 if (len) {
644 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
645 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
646 return -EINVAL;
647 }
648
649 return 0;
650
651 invalid_tlv_len:
652 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
653 tlv_error:
654 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
655
656 return -EINVAL;
657 }
658
659 static int alloc_pci_desc(struct iwl_drv *drv,
660 struct iwl_firmware_pieces *pieces,
661 enum iwl_ucode_type type)
662 {
663 int i;
664 for (i = 0;
665 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
666 i++)
667 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
668 get_sec(pieces, type, i)))
669 return -1;
670 return 0;
671 }
672
673 static int validate_sec_sizes(struct iwl_drv *drv,
674 struct iwl_firmware_pieces *pieces,
675 const struct iwl_cfg *cfg)
676 {
677 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
678 get_sec_size(pieces, IWL_UCODE_REGULAR,
679 IWL_UCODE_SECTION_INST));
680 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
681 get_sec_size(pieces, IWL_UCODE_REGULAR,
682 IWL_UCODE_SECTION_DATA));
683 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
684 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
685 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
686 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
687
688 /* Verify that uCode images will fit in card's SRAM. */
689 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
690 cfg->max_inst_size) {
691 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
692 get_sec_size(pieces, IWL_UCODE_REGULAR,
693 IWL_UCODE_SECTION_INST));
694 return -1;
695 }
696
697 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
698 cfg->max_data_size) {
699 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
700 get_sec_size(pieces, IWL_UCODE_REGULAR,
701 IWL_UCODE_SECTION_DATA));
702 return -1;
703 }
704
705 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
706 cfg->max_inst_size) {
707 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
708 get_sec_size(pieces, IWL_UCODE_INIT,
709 IWL_UCODE_SECTION_INST));
710 return -1;
711 }
712
713 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
714 cfg->max_data_size) {
715 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
716 get_sec_size(pieces, IWL_UCODE_REGULAR,
717 IWL_UCODE_SECTION_DATA));
718 return -1;
719 }
720 return 0;
721 }
722
723
724 /**
725 * iwl_ucode_callback - callback when firmware was loaded
726 *
727 * If loaded successfully, copies the firmware into buffers
728 * for the card to fetch (via DMA).
729 */
730 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
731 {
732 struct iwl_drv *drv = context;
733 struct iwl_fw *fw = &drv->fw;
734 struct iwl_ucode_header *ucode;
735 int err;
736 struct iwl_firmware_pieces pieces;
737 const unsigned int api_max = drv->cfg->ucode_api_max;
738 unsigned int api_ok = drv->cfg->ucode_api_ok;
739 const unsigned int api_min = drv->cfg->ucode_api_min;
740 u32 api_ver;
741 int i;
742
743 fw->ucode_capa.max_probe_length = 200;
744 fw->ucode_capa.standard_phy_calibration_size =
745 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
746
747 if (!api_ok)
748 api_ok = api_max;
749
750 memset(&pieces, 0, sizeof(pieces));
751
752 if (!ucode_raw) {
753 if (drv->fw_index <= api_ok)
754 IWL_ERR(drv,
755 "request for firmware file '%s' failed.\n",
756 drv->firmware_name);
757 goto try_again;
758 }
759
760 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
761 drv->firmware_name, ucode_raw->size);
762
763 /* Make sure that we got at least the API version number */
764 if (ucode_raw->size < 4) {
765 IWL_ERR(drv, "File size way too small!\n");
766 goto try_again;
767 }
768
769 /* Data from ucode file: header followed by uCode images */
770 ucode = (struct iwl_ucode_header *)ucode_raw->data;
771
772 if (ucode->ver)
773 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
774 else
775 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
776 &fw->ucode_capa);
777
778 if (err)
779 goto try_again;
780
781 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
782
783 /*
784 * api_ver should match the api version forming part of the
785 * firmware filename ... but we don't check for that and only rely
786 * on the API version read from firmware header from here on forward
787 */
788 /* no api version check required for experimental uCode */
789 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
790 if (api_ver < api_min || api_ver > api_max) {
791 IWL_ERR(drv,
792 "Driver unable to support your firmware API. "
793 "Driver supports v%u, firmware is v%u.\n",
794 api_max, api_ver);
795 goto try_again;
796 }
797
798 if (api_ver < api_ok) {
799 if (api_ok != api_max)
800 IWL_ERR(drv, "Firmware has old API version, "
801 "expected v%u through v%u, got v%u.\n",
802 api_ok, api_max, api_ver);
803 else
804 IWL_ERR(drv, "Firmware has old API version, "
805 "expected v%u, got v%u.\n",
806 api_max, api_ver);
807 IWL_ERR(drv, "New firmware can be obtained from "
808 "http://www.intellinuxwireless.org/.\n");
809 }
810 }
811
812 IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);
813
814 /*
815 * In mvm uCode there is no difference between data and instructions
816 * sections.
817 */
818 if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
819 goto try_again;
820
821 /* Allocate ucode buffers for card's bus-master loading ... */
822
823 /* Runtime instructions and 2 copies of data:
824 * 1) unmodified from disk
825 * 2) backup cache for save/restore during power-downs */
826 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
827 if (alloc_pci_desc(drv, &pieces, i))
828 goto err_pci_alloc;
829
830 /* Now that we can no longer fail, copy information */
831
832 /*
833 * The (size - 16) / 12 formula is based on the information recorded
834 * for each event, which is of mode 1 (including timestamp) for all
835 * new microcodes that include this information.
836 */
837 fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
838 if (pieces.init_evtlog_size)
839 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
840 else
841 fw->init_evtlog_size =
842 drv->cfg->base_params->max_event_log_size;
843 fw->init_errlog_ptr = pieces.init_errlog_ptr;
844 fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
845 if (pieces.inst_evtlog_size)
846 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
847 else
848 fw->inst_evtlog_size =
849 drv->cfg->base_params->max_event_log_size;
850 fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
851
852 /*
853 * figure out the offset of chain noise reset and gain commands
854 * base on the size of standard phy calibration commands table size
855 */
856 if (fw->ucode_capa.standard_phy_calibration_size >
857 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
858 fw->ucode_capa.standard_phy_calibration_size =
859 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
860
861 /* We have our copies now, allow OS release its copies */
862 release_firmware(ucode_raw);
863 complete(&drv->request_firmware_complete);
864
865 drv->op_mode = iwl_dvm_ops.start(drv->trans, drv->cfg, &drv->fw);
866
867 if (!drv->op_mode)
868 goto out_unbind;
869
870 return;
871
872 try_again:
873 /* try next, if any */
874 release_firmware(ucode_raw);
875 if (iwl_request_firmware(drv, false))
876 goto out_unbind;
877 return;
878
879 err_pci_alloc:
880 IWL_ERR(drv, "failed to allocate pci memory\n");
881 iwl_dealloc_ucode(drv);
882 release_firmware(ucode_raw);
883 out_unbind:
884 complete(&drv->request_firmware_complete);
885 device_release_driver(drv->trans->dev);
886 }
887
888 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
889 const struct iwl_cfg *cfg)
890 {
891 struct iwl_drv *drv;
892 int ret;
893
894 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
895 if (!drv) {
896 dev_printk(KERN_ERR, trans->dev, "Couldn't allocate iwl_drv");
897 return NULL;
898 }
899 drv->trans = trans;
900 drv->dev = trans->dev;
901 drv->cfg = cfg;
902
903 init_completion(&drv->request_firmware_complete);
904
905 ret = iwl_request_firmware(drv, true);
906
907 if (ret) {
908 dev_printk(KERN_ERR, trans->dev, "Couldn't request the fw");
909 kfree(drv);
910 drv = NULL;
911 }
912
913 return drv;
914 }
915
916 void iwl_drv_stop(struct iwl_drv *drv)
917 {
918 wait_for_completion(&drv->request_firmware_complete);
919
920 /* op_mode can be NULL if its start failed */
921 if (drv->op_mode)
922 iwl_op_mode_stop(drv->op_mode);
923
924 iwl_dealloc_ucode(drv);
925
926 kfree(drv);
927 }
928
929
930 /* shared module parameters */
931 struct iwl_mod_params iwlwifi_mod_params = {
932 .amsdu_size_8K = 1,
933 .restart_fw = 1,
934 .plcp_check = true,
935 .bt_coex_active = true,
936 .power_level = IWL_POWER_INDEX_1,
937 .bt_ch_announce = true,
938 .auto_agg = true,
939 /* the rest are 0 by default */
940 };
941
942 #ifdef CONFIG_IWLWIFI_DEBUG
943 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
944 S_IRUGO | S_IWUSR);
945 MODULE_PARM_DESC(debug, "debug output mask");
946 #endif
947
948 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
949 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
950 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
951 MODULE_PARM_DESC(11n_disable,
952 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
953 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
954 int, S_IRUGO);
955 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
956 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, int, S_IRUGO);
957 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
958
959 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
960 int, S_IRUGO);
961 MODULE_PARM_DESC(antenna_coupling,
962 "specify antenna coupling in dB (defualt: 0 dB)");
963
964 module_param_named(bt_ch_inhibition, iwlwifi_mod_params.bt_ch_announce,
965 bool, S_IRUGO);
966 MODULE_PARM_DESC(bt_ch_inhibition,
967 "Enable BT channel inhibition (default: enable)");
968
969 module_param_named(plcp_check, iwlwifi_mod_params.plcp_check, bool, S_IRUGO);
970 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
971
972 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
973 MODULE_PARM_DESC(wd_disable,
974 "Disable stuck queue watchdog timer 0=system default, "
975 "1=disable, 2=enable (default: 0)");
976
977 /*
978 * set bt_coex_active to true, uCode will do kill/defer
979 * every time the priority line is asserted (BT is sending signals on the
980 * priority line in the PCIx).
981 * set bt_coex_active to false, uCode will ignore the BT activity and
982 * perform the normal operation
983 *
984 * User might experience transmit issue on some platform due to WiFi/BT
985 * co-exist problem. The possible behaviors are:
986 * Able to scan and finding all the available AP
987 * Not able to associate with any AP
988 * On those platforms, WiFi communication can be restored by set
989 * "bt_coex_active" module parameter to "false"
990 *
991 * default: bt_coex_active = true (BT_COEX_ENABLE)
992 */
993 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
994 bool, S_IRUGO);
995 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
996
997 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
998 MODULE_PARM_DESC(led_mode, "0=system default, "
999 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1000
1001 module_param_named(power_save, iwlwifi_mod_params.power_save,
1002 bool, S_IRUGO);
1003 MODULE_PARM_DESC(power_save,
1004 "enable WiFi power management (default: disable)");
1005
1006 module_param_named(power_level, iwlwifi_mod_params.power_level,
1007 int, S_IRUGO);
1008 MODULE_PARM_DESC(power_level,
1009 "default power save level (range from 1 - 5, default: 1)");
1010
1011 module_param_named(auto_agg, iwlwifi_mod_params.auto_agg,
1012 bool, S_IRUGO);
1013 MODULE_PARM_DESC(auto_agg,
1014 "enable agg w/o check traffic load (default: enable)");
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