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iwlwifi: set size of ucode section
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-drv.c
blobda4d85a32d314273ebc5391b4894af44c84ca439
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-shared.h"
71 #include "iwl-op-mode.h"
72 #include "iwl-agn-hw.h"
73
74 /* private includes */
75 #include "iwl-fw-file.h"
76
77 /**
78 * struct iwl_drv - drv common data
79 * @fw: the iwl_fw structure
80 * @shrd: pointer to common shared structure
81 * @op_mode: the running op_mode
82 * @fw_index: firmware revision to try loading
83 * @firmware_name: composite filename of ucode file to load
84 * @request_firmware_complete: the firmware has been obtained from user space
85 */
86 struct iwl_drv {
87 struct iwl_fw fw;
88
89 struct iwl_shared *shrd;
90 struct iwl_op_mode *op_mode;
91
92 int fw_index; /* firmware we're trying to load */
93 char firmware_name[25]; /* name of firmware file to load */
94
95 struct completion request_firmware_complete;
96 };
97
98
99
100 /*
101 * struct fw_sec: Just for the image parsing proccess.
102 * For the fw storage we are using struct fw_desc.
103 */
104 struct fw_sec {
105 const void *data; /* the sec data */
106 size_t size; /* section size */
107 u32 offset; /* offset of writing in the device */
108 };
109
110 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
111 {
112 if (desc->v_addr)
113 dma_free_coherent(trans(drv)->dev, desc->len,
114 desc->v_addr, desc->p_addr);
115 desc->v_addr = NULL;
116 desc->len = 0;
117 }
118
119 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
120 {
121 int i;
122 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
123 iwl_free_fw_desc(drv, &img->sec[i]);
124 }
125
126 static void iwl_dealloc_ucode(struct iwl_drv *drv)
127 {
128 int i;
129 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
130 iwl_free_fw_img(drv, drv->fw.img + i);
131 }
132
133 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
134 struct fw_sec *sec)
135 {
136 if (!sec || !sec->size) {
137 desc->v_addr = NULL;
138 return -EINVAL;
139 }
140
141 desc->v_addr = dma_alloc_coherent(trans(drv)->dev, sec->size,
142 &desc->p_addr, GFP_KERNEL);
143 if (!desc->v_addr)
144 return -ENOMEM;
145
146 desc->len = sec->size;
147 desc->offset = sec->offset;
148 memcpy(desc->v_addr, sec->data, sec->size);
149 return 0;
150 }
151
152 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
153
154 #define UCODE_EXPERIMENTAL_INDEX 100
155 #define UCODE_EXPERIMENTAL_TAG "exp"
156
157 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
158 {
159 const struct iwl_cfg *cfg = cfg(drv);
160 const char *name_pre = cfg->fw_name_pre;
161 char tag[8];
162
163 if (first) {
164 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
165 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
166 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
167 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
168 #endif
169 drv->fw_index = cfg->ucode_api_max;
170 sprintf(tag, "%d", drv->fw_index);
171 } else {
172 drv->fw_index--;
173 sprintf(tag, "%d", drv->fw_index);
174 }
175
176 if (drv->fw_index < cfg->ucode_api_min) {
177 IWL_ERR(drv, "no suitable firmware found!\n");
178 return -ENOENT;
179 }
180
181 sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
182
183 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
184 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
185 ? "EXPERIMENTAL " : "",
186 drv->firmware_name);
187
188 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
189 trans(drv)->dev,
190 GFP_KERNEL, drv, iwl_ucode_callback);
191 }
192
193 struct fw_img_parsing {
194 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
195 int sec_counter;
196 };
197
198 /*
199 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
200 */
201 struct fw_sec_parsing {
202 __le32 offset;
203 const u8 data[];
204 } __packed;
205
206 /**
207 * struct iwl_tlv_calib_data - parse the default calib data from TLV
208 *
209 * @ucode_type: the uCode to which the following default calib relates.
210 * @calib: default calibrations.
211 */
212 struct iwl_tlv_calib_data {
213 __le32 ucode_type;
214 __le64 calib;
215 } __packed;
216
217 struct iwl_firmware_pieces {
218 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
219
220 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
221 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
222 };
223
224 /*
225 * These functions are just to extract uCode section data from the pieces
226 * structure.
227 */
228 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
229 enum iwl_ucode_type type,
230 int sec)
231 {
232 return &pieces->img[type].sec[sec];
233 }
234
235 static void set_sec_data(struct iwl_firmware_pieces *pieces,
236 enum iwl_ucode_type type,
237 int sec,
238 const void *data)
239 {
240 pieces->img[type].sec[sec].data = data;
241 }
242
243 static void set_sec_size(struct iwl_firmware_pieces *pieces,
244 enum iwl_ucode_type type,
245 int sec,
246 size_t size)
247 {
248 pieces->img[type].sec[sec].size = size;
249 }
250
251 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
252 enum iwl_ucode_type type,
253 int sec)
254 {
255 return pieces->img[type].sec[sec].size;
256 }
257
258 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
259 enum iwl_ucode_type type,
260 int sec,
261 u32 offset)
262 {
263 pieces->img[type].sec[sec].offset = offset;
264 }
265
266 /*
267 * Gets uCode section from tlv.
268 */
269 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
270 const void *data, enum iwl_ucode_type type,
271 int size)
272 {
273 struct fw_img_parsing *img;
274 struct fw_sec *sec;
275 struct fw_sec_parsing *sec_parse;
276
277 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
278 return -1;
279
280 sec_parse = (struct fw_sec_parsing *)data;
281
282 img = &pieces->img[type];
283 sec = &img->sec[img->sec_counter];
284
285 sec->offset = le32_to_cpu(sec_parse->offset);
286 sec->data = sec_parse->data;
287 sec->size = size - sizeof(sec_parse->offset);
288
289 ++img->sec_counter;
290
291 return 0;
292 }
293
294 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
295 {
296 struct iwl_tlv_calib_data *def_calib =
297 (struct iwl_tlv_calib_data *)data;
298 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
299 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
300 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
301 ucode_type);
302 return -EINVAL;
303 }
304 drv->fw.default_calib[ucode_type] = le64_to_cpu(def_calib->calib);
305 return 0;
306 }
307
308 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
309 const struct firmware *ucode_raw,
310 struct iwl_firmware_pieces *pieces)
311 {
312 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
313 u32 api_ver, hdr_size, build;
314 char buildstr[25];
315 const u8 *src;
316
317 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
318 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
319
320 switch (api_ver) {
321 default:
322 hdr_size = 28;
323 if (ucode_raw->size < hdr_size) {
324 IWL_ERR(drv, "File size too small!\n");
325 return -EINVAL;
326 }
327 build = le32_to_cpu(ucode->u.v2.build);
328 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
329 le32_to_cpu(ucode->u.v2.inst_size));
330 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
331 le32_to_cpu(ucode->u.v2.data_size));
332 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
333 le32_to_cpu(ucode->u.v2.init_size));
334 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
335 le32_to_cpu(ucode->u.v2.init_data_size));
336 src = ucode->u.v2.data;
337 break;
338 case 0:
339 case 1:
340 case 2:
341 hdr_size = 24;
342 if (ucode_raw->size < hdr_size) {
343 IWL_ERR(drv, "File size too small!\n");
344 return -EINVAL;
345 }
346 build = 0;
347 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
348 le32_to_cpu(ucode->u.v1.inst_size));
349 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
350 le32_to_cpu(ucode->u.v1.data_size));
351 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
352 le32_to_cpu(ucode->u.v1.init_size));
353 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
354 le32_to_cpu(ucode->u.v1.init_data_size));
355 src = ucode->u.v1.data;
356 break;
357 }
358
359 if (build)
360 sprintf(buildstr, " build %u%s", build,
361 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
362 ? " (EXP)" : "");
363 else
364 buildstr[0] = '\0';
365
366 snprintf(drv->fw.fw_version,
367 sizeof(drv->fw.fw_version),
368 "%u.%u.%u.%u%s",
369 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
370 IWL_UCODE_MINOR(drv->fw.ucode_ver),
371 IWL_UCODE_API(drv->fw.ucode_ver),
372 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
373 buildstr);
374
375 /* Verify size of file vs. image size info in file's header */
376
377 if (ucode_raw->size != hdr_size +
378 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
379 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
380 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
381 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
382
383 IWL_ERR(drv,
384 "uCode file size %d does not match expected size\n",
385 (int)ucode_raw->size);
386 return -EINVAL;
387 }
388
389
390 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
391 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
392 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
393 IWLAGN_RTC_INST_LOWER_BOUND);
394 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
395 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
396 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
397 IWLAGN_RTC_DATA_LOWER_BOUND);
398 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
399 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
400 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
401 IWLAGN_RTC_INST_LOWER_BOUND);
402 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
403 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
404 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
405 IWLAGN_RTC_DATA_LOWER_BOUND);
406 return 0;
407 }
408
409 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
410 const struct firmware *ucode_raw,
411 struct iwl_firmware_pieces *pieces,
412 struct iwl_ucode_capabilities *capa)
413 {
414 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
415 struct iwl_ucode_tlv *tlv;
416 size_t len = ucode_raw->size;
417 const u8 *data;
418 u32 tlv_len;
419 enum iwl_ucode_tlv_type tlv_type;
420 const u8 *tlv_data;
421 char buildstr[25];
422 u32 build;
423
424 if (len < sizeof(*ucode)) {
425 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
426 return -EINVAL;
427 }
428
429 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
430 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
431 le32_to_cpu(ucode->magic));
432 return -EINVAL;
433 }
434
435 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
436 build = le32_to_cpu(ucode->build);
437
438 if (build)
439 sprintf(buildstr, " build %u%s", build,
440 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
441 ? " (EXP)" : "");
442 else
443 buildstr[0] = '\0';
444
445 snprintf(drv->fw.fw_version,
446 sizeof(drv->fw.fw_version),
447 "%u.%u.%u.%u%s",
448 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
449 IWL_UCODE_MINOR(drv->fw.ucode_ver),
450 IWL_UCODE_API(drv->fw.ucode_ver),
451 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
452 buildstr);
453
454 data = ucode->data;
455
456 len -= sizeof(*ucode);
457
458 while (len >= sizeof(*tlv)) {
459 len -= sizeof(*tlv);
460 tlv = (void *)data;
461
462 tlv_len = le32_to_cpu(tlv->length);
463 tlv_type = le32_to_cpu(tlv->type);
464 tlv_data = tlv->data;
465
466 if (len < tlv_len) {
467 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
468 len, tlv_len);
469 return -EINVAL;
470 }
471 len -= ALIGN(tlv_len, 4);
472 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
473
474 switch (tlv_type) {
475 case IWL_UCODE_TLV_INST:
476 set_sec_data(pieces, IWL_UCODE_REGULAR,
477 IWL_UCODE_SECTION_INST, tlv_data);
478 set_sec_size(pieces, IWL_UCODE_REGULAR,
479 IWL_UCODE_SECTION_INST, tlv_len);
480 set_sec_offset(pieces, IWL_UCODE_REGULAR,
481 IWL_UCODE_SECTION_INST,
482 IWLAGN_RTC_INST_LOWER_BOUND);
483 break;
484 case IWL_UCODE_TLV_DATA:
485 set_sec_data(pieces, IWL_UCODE_REGULAR,
486 IWL_UCODE_SECTION_DATA, tlv_data);
487 set_sec_size(pieces, IWL_UCODE_REGULAR,
488 IWL_UCODE_SECTION_DATA, tlv_len);
489 set_sec_offset(pieces, IWL_UCODE_REGULAR,
490 IWL_UCODE_SECTION_DATA,
491 IWLAGN_RTC_DATA_LOWER_BOUND);
492 break;
493 case IWL_UCODE_TLV_INIT:
494 set_sec_data(pieces, IWL_UCODE_INIT,
495 IWL_UCODE_SECTION_INST, tlv_data);
496 set_sec_size(pieces, IWL_UCODE_INIT,
497 IWL_UCODE_SECTION_INST, tlv_len);
498 set_sec_offset(pieces, IWL_UCODE_INIT,
499 IWL_UCODE_SECTION_INST,
500 IWLAGN_RTC_INST_LOWER_BOUND);
501 break;
502 case IWL_UCODE_TLV_INIT_DATA:
503 set_sec_data(pieces, IWL_UCODE_INIT,
504 IWL_UCODE_SECTION_DATA, tlv_data);
505 set_sec_size(pieces, IWL_UCODE_INIT,
506 IWL_UCODE_SECTION_DATA, tlv_len);
507 set_sec_offset(pieces, IWL_UCODE_INIT,
508 IWL_UCODE_SECTION_DATA,
509 IWLAGN_RTC_DATA_LOWER_BOUND);
510 break;
511 case IWL_UCODE_TLV_BOOT:
512 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
513 break;
514 case IWL_UCODE_TLV_PROBE_MAX_LEN:
515 if (tlv_len != sizeof(u32))
516 goto invalid_tlv_len;
517 capa->max_probe_length =
518 le32_to_cpup((__le32 *)tlv_data);
519 break;
520 case IWL_UCODE_TLV_PAN:
521 if (tlv_len)
522 goto invalid_tlv_len;
523 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
524 break;
525 case IWL_UCODE_TLV_FLAGS:
526 /* must be at least one u32 */
527 if (tlv_len < sizeof(u32))
528 goto invalid_tlv_len;
529 /* and a proper number of u32s */
530 if (tlv_len % sizeof(u32))
531 goto invalid_tlv_len;
532 /*
533 * This driver only reads the first u32 as
534 * right now no more features are defined,
535 * if that changes then either the driver
536 * will not work with the new firmware, or
537 * it'll not take advantage of new features.
538 */
539 capa->flags = le32_to_cpup((__le32 *)tlv_data);
540 break;
541 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
542 if (tlv_len != sizeof(u32))
543 goto invalid_tlv_len;
544 pieces->init_evtlog_ptr =
545 le32_to_cpup((__le32 *)tlv_data);
546 break;
547 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
548 if (tlv_len != sizeof(u32))
549 goto invalid_tlv_len;
550 pieces->init_evtlog_size =
551 le32_to_cpup((__le32 *)tlv_data);
552 break;
553 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
554 if (tlv_len != sizeof(u32))
555 goto invalid_tlv_len;
556 pieces->init_errlog_ptr =
557 le32_to_cpup((__le32 *)tlv_data);
558 break;
559 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
560 if (tlv_len != sizeof(u32))
561 goto invalid_tlv_len;
562 pieces->inst_evtlog_ptr =
563 le32_to_cpup((__le32 *)tlv_data);
564 break;
565 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
566 if (tlv_len != sizeof(u32))
567 goto invalid_tlv_len;
568 pieces->inst_evtlog_size =
569 le32_to_cpup((__le32 *)tlv_data);
570 break;
571 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
572 if (tlv_len != sizeof(u32))
573 goto invalid_tlv_len;
574 pieces->inst_errlog_ptr =
575 le32_to_cpup((__le32 *)tlv_data);
576 break;
577 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
578 if (tlv_len)
579 goto invalid_tlv_len;
580 drv->fw.enhance_sensitivity_table = true;
581 break;
582 case IWL_UCODE_TLV_WOWLAN_INST:
583 set_sec_data(pieces, IWL_UCODE_WOWLAN,
584 IWL_UCODE_SECTION_INST, tlv_data);
585 set_sec_size(pieces, IWL_UCODE_WOWLAN,
586 IWL_UCODE_SECTION_INST, tlv_len);
587 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
588 IWL_UCODE_SECTION_INST,
589 IWLAGN_RTC_INST_LOWER_BOUND);
590 break;
591 case IWL_UCODE_TLV_WOWLAN_DATA:
592 set_sec_data(pieces, IWL_UCODE_WOWLAN,
593 IWL_UCODE_SECTION_DATA, tlv_data);
594 set_sec_size(pieces, IWL_UCODE_WOWLAN,
595 IWL_UCODE_SECTION_DATA, tlv_len);
596 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
597 IWL_UCODE_SECTION_DATA,
598 IWLAGN_RTC_DATA_LOWER_BOUND);
599 break;
600 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
601 if (tlv_len != sizeof(u32))
602 goto invalid_tlv_len;
603 capa->standard_phy_calibration_size =
604 le32_to_cpup((__le32 *)tlv_data);
605 break;
606 case IWL_UCODE_TLV_SEC_RT:
607 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
608 tlv_len);
609 drv->fw.mvm_fw = true;
610 break;
611 case IWL_UCODE_TLV_SEC_INIT:
612 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
613 tlv_len);
614 drv->fw.mvm_fw = true;
615 break;
616 case IWL_UCODE_TLV_SEC_WOWLAN:
617 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
618 tlv_len);
619 drv->fw.mvm_fw = true;
620 break;
621 case IWL_UCODE_TLV_DEF_CALIB:
622 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
623 goto invalid_tlv_len;
624 if (iwl_set_default_calib(drv, tlv_data))
625 goto tlv_error;
626 break;
627 case IWL_UCODE_TLV_PHY_SKU:
628 if (tlv_len != sizeof(u32))
629 goto invalid_tlv_len;
630 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
631 break;
632 default:
633 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
634 break;
635 }
636 }
637
638 if (len) {
639 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
640 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
641 return -EINVAL;
642 }
643
644 return 0;
645
646 invalid_tlv_len:
647 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
648 tlv_error:
649 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
650
651 return -EINVAL;
652 }
653
654 static int alloc_pci_desc(struct iwl_drv *drv,
655 struct iwl_firmware_pieces *pieces,
656 enum iwl_ucode_type type)
657 {
658 int i;
659 for (i = 0;
660 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
661 i++)
662 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
663 get_sec(pieces, type, i)))
664 return -1;
665 return 0;
666 }
667
668 static int validate_sec_sizes(struct iwl_drv *drv,
669 struct iwl_firmware_pieces *pieces,
670 const struct iwl_cfg *cfg)
671 {
672 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
673 get_sec_size(pieces, IWL_UCODE_REGULAR,
674 IWL_UCODE_SECTION_INST));
675 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
676 get_sec_size(pieces, IWL_UCODE_REGULAR,
677 IWL_UCODE_SECTION_DATA));
678 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
679 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
680 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
681 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
682
683 /* Verify that uCode images will fit in card's SRAM. */
684 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
685 cfg->max_inst_size) {
686 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
687 get_sec_size(pieces, IWL_UCODE_REGULAR,
688 IWL_UCODE_SECTION_INST));
689 return -1;
690 }
691
692 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
693 cfg->max_data_size) {
694 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
695 get_sec_size(pieces, IWL_UCODE_REGULAR,
696 IWL_UCODE_SECTION_DATA));
697 return -1;
698 }
699
700 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
701 cfg->max_inst_size) {
702 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
703 get_sec_size(pieces, IWL_UCODE_INIT,
704 IWL_UCODE_SECTION_INST));
705 return -1;
706 }
707
708 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
709 cfg->max_data_size) {
710 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
711 get_sec_size(pieces, IWL_UCODE_REGULAR,
712 IWL_UCODE_SECTION_DATA));
713 return -1;
714 }
715 return 0;
716 }
717
718
719 /**
720 * iwl_ucode_callback - callback when firmware was loaded
721 *
722 * If loaded successfully, copies the firmware into buffers
723 * for the card to fetch (via DMA).
724 */
725 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
726 {
727 struct iwl_drv *drv = context;
728 const struct iwl_cfg *cfg = cfg(drv);
729 struct iwl_fw *fw = &drv->fw;
730 struct iwl_ucode_header *ucode;
731 int err;
732 struct iwl_firmware_pieces pieces;
733 const unsigned int api_max = cfg->ucode_api_max;
734 unsigned int api_ok = cfg->ucode_api_ok;
735 const unsigned int api_min = cfg->ucode_api_min;
736 u32 api_ver;
737 int i;
738
739 fw->ucode_capa.max_probe_length = 200;
740 fw->ucode_capa.standard_phy_calibration_size =
741 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
742
743 if (!api_ok)
744 api_ok = api_max;
745
746 memset(&pieces, 0, sizeof(pieces));
747
748 if (!ucode_raw) {
749 if (drv->fw_index <= api_ok)
750 IWL_ERR(drv,
751 "request for firmware file '%s' failed.\n",
752 drv->firmware_name);
753 goto try_again;
754 }
755
756 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
757 drv->firmware_name, ucode_raw->size);
758
759 /* Make sure that we got at least the API version number */
760 if (ucode_raw->size < 4) {
761 IWL_ERR(drv, "File size way too small!\n");
762 goto try_again;
763 }
764
765 /* Data from ucode file: header followed by uCode images */
766 ucode = (struct iwl_ucode_header *)ucode_raw->data;
767
768 if (ucode->ver)
769 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
770 else
771 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
772 &fw->ucode_capa);
773
774 if (err)
775 goto try_again;
776
777 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
778
779 /*
780 * api_ver should match the api version forming part of the
781 * firmware filename ... but we don't check for that and only rely
782 * on the API version read from firmware header from here on forward
783 */
784 /* no api version check required for experimental uCode */
785 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
786 if (api_ver < api_min || api_ver > api_max) {
787 IWL_ERR(drv,
788 "Driver unable to support your firmware API. "
789 "Driver supports v%u, firmware is v%u.\n",
790 api_max, api_ver);
791 goto try_again;
792 }
793
794 if (api_ver < api_ok) {
795 if (api_ok != api_max)
796 IWL_ERR(drv, "Firmware has old API version, "
797 "expected v%u through v%u, got v%u.\n",
798 api_ok, api_max, api_ver);
799 else
800 IWL_ERR(drv, "Firmware has old API version, "
801 "expected v%u, got v%u.\n",
802 api_max, api_ver);
803 IWL_ERR(drv, "New firmware can be obtained from "
804 "http://www.intellinuxwireless.org/.\n");
805 }
806 }
807
808 IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);
809
810 /*
811 * For any of the failures below (before allocating pci memory)
812 * we will try to load a version with a smaller API -- maybe the
813 * user just got a corrupted version of the latest API.
814 */
815
816 IWL_DEBUG_INFO(drv, "f/w package hdr ucode version raw = 0x%x\n",
817 drv->fw.ucode_ver);
818 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
819 get_sec_size(&pieces, IWL_UCODE_REGULAR,
820 IWL_UCODE_SECTION_INST));
821 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
822 get_sec_size(&pieces, IWL_UCODE_REGULAR,
823 IWL_UCODE_SECTION_DATA));
824 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
825 get_sec_size(&pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
826 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
827 get_sec_size(&pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
828
829 /* Verify that uCode images will fit in card's SRAM */
830 if (get_sec_size(&pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
831 cfg->max_inst_size) {
832 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
833 get_sec_size(&pieces, IWL_UCODE_REGULAR,
834 IWL_UCODE_SECTION_INST));
835 goto try_again;
836 }
837
838 if (get_sec_size(&pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
839 cfg->max_data_size) {
840 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
841 get_sec_size(&pieces, IWL_UCODE_REGULAR,
842 IWL_UCODE_SECTION_DATA));
843 goto try_again;
844 }
845
846 /*
847 * In mvm uCode there is no difference between data and instructions
848 * sections.
849 */
850 if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, cfg))
851 goto try_again;
852
853 /* Allocate ucode buffers for card's bus-master loading ... */
854
855 /* Runtime instructions and 2 copies of data:
856 * 1) unmodified from disk
857 * 2) backup cache for save/restore during power-downs */
858 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
859 if (alloc_pci_desc(drv, &pieces, i))
860 goto err_pci_alloc;
861
862 /* Now that we can no longer fail, copy information */
863
864 /*
865 * The (size - 16) / 12 formula is based on the information recorded
866 * for each event, which is of mode 1 (including timestamp) for all
867 * new microcodes that include this information.
868 */
869 fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
870 if (pieces.init_evtlog_size)
871 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
872 else
873 fw->init_evtlog_size =
874 cfg->base_params->max_event_log_size;
875 fw->init_errlog_ptr = pieces.init_errlog_ptr;
876 fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
877 if (pieces.inst_evtlog_size)
878 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
879 else
880 fw->inst_evtlog_size =
881 cfg->base_params->max_event_log_size;
882 fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
883
884 /*
885 * figure out the offset of chain noise reset and gain commands
886 * base on the size of standard phy calibration commands table size
887 */
888 if (fw->ucode_capa.standard_phy_calibration_size >
889 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
890 fw->ucode_capa.standard_phy_calibration_size =
891 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
892
893 /* We have our copies now, allow OS release its copies */
894 release_firmware(ucode_raw);
895 complete(&drv->request_firmware_complete);
896
897 drv->op_mode = iwl_dvm_ops.start(drv->shrd->trans, &drv->fw);
898
899 if (!drv->op_mode)
900 goto out_unbind;
901
902 return;
903
904 try_again:
905 /* try next, if any */
906 release_firmware(ucode_raw);
907 if (iwl_request_firmware(drv, false))
908 goto out_unbind;
909 return;
910
911 err_pci_alloc:
912 IWL_ERR(drv, "failed to allocate pci memory\n");
913 iwl_dealloc_ucode(drv);
914 release_firmware(ucode_raw);
915 out_unbind:
916 complete(&drv->request_firmware_complete);
917 device_release_driver(trans(drv)->dev);
918 }
919
920 int iwl_drv_start(struct iwl_shared *shrd,
921 struct iwl_trans *trans, const struct iwl_cfg *cfg)
922 {
923 struct iwl_drv *drv;
924 int ret;
925
926 shrd->cfg = cfg;
927
928 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
929 if (!drv) {
930 dev_printk(KERN_ERR, trans->dev, "Couldn't allocate iwl_drv");
931 return -ENOMEM;
932 }
933 drv->shrd = shrd;
934 shrd->drv = drv;
935
936 init_completion(&drv->request_firmware_complete);
937
938 ret = iwl_request_firmware(drv, true);
939
940 if (ret) {
941 dev_printk(KERN_ERR, trans->dev, "Couldn't request the fw");
942 kfree(drv);
943 shrd->drv = NULL;
944 }
945
946 return ret;
947 }
948
949 void iwl_drv_stop(struct iwl_shared *shrd)
950 {
951 struct iwl_drv *drv = shrd->drv;
952
953 wait_for_completion(&drv->request_firmware_complete);
954
955 /* op_mode can be NULL if its start failed */
956 if (drv->op_mode)
957 iwl_op_mode_stop(drv->op_mode);
958
959 iwl_dealloc_ucode(drv);
960
961 kfree(drv);
962 shrd->drv = NULL;
963 }
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