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iwlwifi: use correct fw file in 8000 b-step
[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 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/completion.h>
66 #include <linux/dma-mapping.h>
67 #include <linux/firmware.h>
68 #include <linux/module.h>
69 #include <linux/vmalloc.h>
70
71 #include "iwl-drv.h"
72 #include "iwl-csr.h"
73 #include "iwl-debug.h"
74 #include "iwl-trans.h"
75 #include "iwl-op-mode.h"
76 #include "iwl-agn-hw.h"
77 #include "iwl-fw.h"
78 #include "iwl-config.h"
79 #include "iwl-modparams.h"
80
81 /******************************************************************************
82 *
83 * module boiler plate
84 *
85 ******************************************************************************/
86
87 /*
88 * module name, copyright, version, etc.
89 */
90 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
91
92 #ifdef CONFIG_IWLWIFI_DEBUG
93 #define VD "d"
94 #else
95 #define VD
96 #endif
97
98 #define DRV_VERSION IWLWIFI_VERSION VD
99
100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
101 MODULE_VERSION(DRV_VERSION);
102 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
103 MODULE_LICENSE("GPL");
104
105 #ifdef CONFIG_IWLWIFI_DEBUGFS
106 static struct dentry *iwl_dbgfs_root;
107 #endif
108
109 /**
110 * struct iwl_drv - drv common data
111 * @list: list of drv structures using this opmode
112 * @fw: the iwl_fw structure
113 * @op_mode: the running op_mode
114 * @trans: transport layer
115 * @dev: for debug prints only
116 * @cfg: configuration struct
117 * @fw_index: firmware revision to try loading
118 * @firmware_name: composite filename of ucode file to load
119 * @request_firmware_complete: the firmware has been obtained from user space
120 */
121 struct iwl_drv {
122 struct list_head list;
123 struct iwl_fw fw;
124
125 struct iwl_op_mode *op_mode;
126 struct iwl_trans *trans;
127 struct device *dev;
128 const struct iwl_cfg *cfg;
129
130 int fw_index; /* firmware we're trying to load */
131 char firmware_name[32]; /* name of firmware file to load */
132
133 struct completion request_firmware_complete;
134
135 #ifdef CONFIG_IWLWIFI_DEBUGFS
136 struct dentry *dbgfs_drv;
137 struct dentry *dbgfs_trans;
138 struct dentry *dbgfs_op_mode;
139 #endif
140 };
141
142 enum {
143 DVM_OP_MODE = 0,
144 MVM_OP_MODE = 1,
145 };
146
147 /* Protects the table contents, i.e. the ops pointer & drv list */
148 static struct mutex iwlwifi_opmode_table_mtx;
149 static struct iwlwifi_opmode_table {
150 const char *name; /* name: iwldvm, iwlmvm, etc */
151 const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */
152 struct list_head drv; /* list of devices using this op_mode */
153 } iwlwifi_opmode_table[] = { /* ops set when driver is initialized */
154 [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
155 [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
156 };
157
158 #define IWL_DEFAULT_SCAN_CHANNELS 40
159
160 /*
161 * struct fw_sec: Just for the image parsing proccess.
162 * For the fw storage we are using struct fw_desc.
163 */
164 struct fw_sec {
165 const void *data; /* the sec data */
166 size_t size; /* section size */
167 u32 offset; /* offset of writing in the device */
168 };
169
170 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
171 {
172 vfree(desc->data);
173 desc->data = NULL;
174 desc->len = 0;
175 }
176
177 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
178 {
179 int i;
180 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
181 iwl_free_fw_desc(drv, &img->sec[i]);
182 }
183
184 static void iwl_dealloc_ucode(struct iwl_drv *drv)
185 {
186 int i;
187 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
188 iwl_free_fw_img(drv, drv->fw.img + i);
189 }
190
191 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
192 struct fw_sec *sec)
193 {
194 void *data;
195
196 desc->data = NULL;
197
198 if (!sec || !sec->size)
199 return -EINVAL;
200
201 data = vmalloc(sec->size);
202 if (!data)
203 return -ENOMEM;
204
205 desc->len = sec->size;
206 desc->offset = sec->offset;
207 memcpy(data, sec->data, desc->len);
208 desc->data = data;
209
210 return 0;
211 }
212
213 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
214 void *context);
215
216 #define UCODE_EXPERIMENTAL_INDEX 100
217 #define UCODE_EXPERIMENTAL_TAG "exp"
218
219 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
220 {
221 const char *name_pre = drv->cfg->fw_name_pre;
222 char tag[8];
223
224 if (first) {
225 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
226 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
227 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
228 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
229 #endif
230 drv->fw_index = drv->cfg->ucode_api_max;
231 sprintf(tag, "%d", drv->fw_index);
232 } else {
233 drv->fw_index--;
234 sprintf(tag, "%d", drv->fw_index);
235 }
236
237 if (drv->fw_index < drv->cfg->ucode_api_min) {
238 IWL_ERR(drv, "no suitable firmware found!\n");
239 return -ENOENT;
240 }
241
242 snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
243 name_pre, tag);
244
245 /*
246 * Starting 8000B - FW name format has changed. This overwrites the
247 * previous name and uses the new format.
248 *
249 * TODO:
250 * Once there is only one supported step for 8000 family - delete this!
251 */
252 if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
253 char rev_step[2] = {
254 'A' + CSR_HW_REV_STEP(drv->trans->hw_rev), 0
255 };
256
257 /* A-step doesn't have an indication */
258 if (CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_A_STEP)
259 rev_step[0] = 0;
260
261 /*
262 * If hw_rev wasn't set yet - default as B-step. If it IS A-step
263 * we'll reload that FW later instead.
264 */
265 if (drv->trans->hw_rev == 0)
266 rev_step[0] = 'B';
267
268 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
269 "%s%s-%s.ucode", name_pre, rev_step, tag);
270 }
271
272 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
273 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
274 ? "EXPERIMENTAL " : "",
275 drv->firmware_name);
276
277 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
278 drv->trans->dev,
279 GFP_KERNEL, drv, iwl_req_fw_callback);
280 }
281
282 struct fw_img_parsing {
283 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
284 int sec_counter;
285 };
286
287 /*
288 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
289 */
290 struct fw_sec_parsing {
291 __le32 offset;
292 const u8 data[];
293 } __packed;
294
295 /**
296 * struct iwl_tlv_calib_data - parse the default calib data from TLV
297 *
298 * @ucode_type: the uCode to which the following default calib relates.
299 * @calib: default calibrations.
300 */
301 struct iwl_tlv_calib_data {
302 __le32 ucode_type;
303 struct iwl_tlv_calib_ctrl calib;
304 } __packed;
305
306 struct iwl_firmware_pieces {
307 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
308
309 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
310 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
311 };
312
313 /*
314 * These functions are just to extract uCode section data from the pieces
315 * structure.
316 */
317 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
318 enum iwl_ucode_type type,
319 int sec)
320 {
321 return &pieces->img[type].sec[sec];
322 }
323
324 static void set_sec_data(struct iwl_firmware_pieces *pieces,
325 enum iwl_ucode_type type,
326 int sec,
327 const void *data)
328 {
329 pieces->img[type].sec[sec].data = data;
330 }
331
332 static void set_sec_size(struct iwl_firmware_pieces *pieces,
333 enum iwl_ucode_type type,
334 int sec,
335 size_t size)
336 {
337 pieces->img[type].sec[sec].size = size;
338 }
339
340 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
341 enum iwl_ucode_type type,
342 int sec)
343 {
344 return pieces->img[type].sec[sec].size;
345 }
346
347 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
348 enum iwl_ucode_type type,
349 int sec,
350 u32 offset)
351 {
352 pieces->img[type].sec[sec].offset = offset;
353 }
354
355 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
356 {
357 int i, j;
358 struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
359 struct iwl_fw_cipher_scheme *fwcs;
360 struct ieee80211_cipher_scheme *cs;
361 u32 cipher;
362
363 if (len < sizeof(*l) ||
364 len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
365 return -EINVAL;
366
367 for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
368 fwcs = &l->cs[j];
369 cipher = le32_to_cpu(fwcs->cipher);
370
371 /* we skip schemes with zero cipher suite selector */
372 if (!cipher)
373 continue;
374
375 cs = &fw->cs[j++];
376 cs->cipher = cipher;
377 cs->iftype = BIT(NL80211_IFTYPE_STATION);
378 cs->hdr_len = fwcs->hdr_len;
379 cs->pn_len = fwcs->pn_len;
380 cs->pn_off = fwcs->pn_off;
381 cs->key_idx_off = fwcs->key_idx_off;
382 cs->key_idx_mask = fwcs->key_idx_mask;
383 cs->key_idx_shift = fwcs->key_idx_shift;
384 cs->mic_len = fwcs->mic_len;
385 }
386
387 return 0;
388 }
389
390 /*
391 * Gets uCode section from tlv.
392 */
393 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
394 const void *data, enum iwl_ucode_type type,
395 int size)
396 {
397 struct fw_img_parsing *img;
398 struct fw_sec *sec;
399 struct fw_sec_parsing *sec_parse;
400
401 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
402 return -1;
403
404 sec_parse = (struct fw_sec_parsing *)data;
405
406 img = &pieces->img[type];
407 sec = &img->sec[img->sec_counter];
408
409 sec->offset = le32_to_cpu(sec_parse->offset);
410 sec->data = sec_parse->data;
411 sec->size = size - sizeof(sec_parse->offset);
412
413 ++img->sec_counter;
414
415 return 0;
416 }
417
418 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
419 {
420 struct iwl_tlv_calib_data *def_calib =
421 (struct iwl_tlv_calib_data *)data;
422 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
423 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
424 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
425 ucode_type);
426 return -EINVAL;
427 }
428 drv->fw.default_calib[ucode_type].flow_trigger =
429 def_calib->calib.flow_trigger;
430 drv->fw.default_calib[ucode_type].event_trigger =
431 def_calib->calib.event_trigger;
432
433 return 0;
434 }
435
436 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
437 struct iwl_ucode_capabilities *capa)
438 {
439 const struct iwl_ucode_api *ucode_api = (void *)data;
440 u32 api_index = le32_to_cpu(ucode_api->api_index);
441
442 if (api_index >= IWL_API_ARRAY_SIZE) {
443 IWL_ERR(drv, "api_index larger than supported by driver\n");
444 return -EINVAL;
445 }
446
447 capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
448
449 return 0;
450 }
451
452 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
453 struct iwl_ucode_capabilities *capa)
454 {
455 const struct iwl_ucode_capa *ucode_capa = (void *)data;
456 u32 api_index = le32_to_cpu(ucode_capa->api_index);
457
458 if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
459 IWL_ERR(drv, "api_index larger than supported by driver\n");
460 return -EINVAL;
461 }
462
463 capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
464
465 return 0;
466 }
467
468 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
469 const struct firmware *ucode_raw,
470 struct iwl_firmware_pieces *pieces)
471 {
472 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
473 u32 api_ver, hdr_size, build;
474 char buildstr[25];
475 const u8 *src;
476
477 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
478 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
479
480 switch (api_ver) {
481 default:
482 hdr_size = 28;
483 if (ucode_raw->size < hdr_size) {
484 IWL_ERR(drv, "File size too small!\n");
485 return -EINVAL;
486 }
487 build = le32_to_cpu(ucode->u.v2.build);
488 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
489 le32_to_cpu(ucode->u.v2.inst_size));
490 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
491 le32_to_cpu(ucode->u.v2.data_size));
492 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
493 le32_to_cpu(ucode->u.v2.init_size));
494 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
495 le32_to_cpu(ucode->u.v2.init_data_size));
496 src = ucode->u.v2.data;
497 break;
498 case 0:
499 case 1:
500 case 2:
501 hdr_size = 24;
502 if (ucode_raw->size < hdr_size) {
503 IWL_ERR(drv, "File size too small!\n");
504 return -EINVAL;
505 }
506 build = 0;
507 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
508 le32_to_cpu(ucode->u.v1.inst_size));
509 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
510 le32_to_cpu(ucode->u.v1.data_size));
511 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
512 le32_to_cpu(ucode->u.v1.init_size));
513 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
514 le32_to_cpu(ucode->u.v1.init_data_size));
515 src = ucode->u.v1.data;
516 break;
517 }
518
519 if (build)
520 sprintf(buildstr, " build %u%s", build,
521 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
522 ? " (EXP)" : "");
523 else
524 buildstr[0] = '\0';
525
526 snprintf(drv->fw.fw_version,
527 sizeof(drv->fw.fw_version),
528 "%u.%u.%u.%u%s",
529 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
530 IWL_UCODE_MINOR(drv->fw.ucode_ver),
531 IWL_UCODE_API(drv->fw.ucode_ver),
532 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
533 buildstr);
534
535 /* Verify size of file vs. image size info in file's header */
536
537 if (ucode_raw->size != hdr_size +
538 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
539 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
540 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
541 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
542
543 IWL_ERR(drv,
544 "uCode file size %d does not match expected size\n",
545 (int)ucode_raw->size);
546 return -EINVAL;
547 }
548
549
550 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
551 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
552 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
553 IWLAGN_RTC_INST_LOWER_BOUND);
554 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
555 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
556 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
557 IWLAGN_RTC_DATA_LOWER_BOUND);
558 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
559 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
560 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
561 IWLAGN_RTC_INST_LOWER_BOUND);
562 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
563 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
564 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
565 IWLAGN_RTC_DATA_LOWER_BOUND);
566 return 0;
567 }
568
569 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
570 const struct firmware *ucode_raw,
571 struct iwl_firmware_pieces *pieces,
572 struct iwl_ucode_capabilities *capa)
573 {
574 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
575 struct iwl_ucode_tlv *tlv;
576 size_t len = ucode_raw->size;
577 const u8 *data;
578 u32 tlv_len;
579 enum iwl_ucode_tlv_type tlv_type;
580 const u8 *tlv_data;
581 char buildstr[25];
582 u32 build;
583 int num_of_cpus;
584
585 if (len < sizeof(*ucode)) {
586 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
587 return -EINVAL;
588 }
589
590 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
591 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
592 le32_to_cpu(ucode->magic));
593 return -EINVAL;
594 }
595
596 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
597 memcpy(drv->fw.human_readable, ucode->human_readable,
598 sizeof(drv->fw.human_readable));
599 build = le32_to_cpu(ucode->build);
600
601 if (build)
602 sprintf(buildstr, " build %u%s", build,
603 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
604 ? " (EXP)" : "");
605 else
606 buildstr[0] = '\0';
607
608 snprintf(drv->fw.fw_version,
609 sizeof(drv->fw.fw_version),
610 "%u.%u.%u.%u%s",
611 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
612 IWL_UCODE_MINOR(drv->fw.ucode_ver),
613 IWL_UCODE_API(drv->fw.ucode_ver),
614 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
615 buildstr);
616
617 data = ucode->data;
618
619 len -= sizeof(*ucode);
620
621 while (len >= sizeof(*tlv)) {
622 len -= sizeof(*tlv);
623 tlv = (void *)data;
624
625 tlv_len = le32_to_cpu(tlv->length);
626 tlv_type = le32_to_cpu(tlv->type);
627 tlv_data = tlv->data;
628
629 if (len < tlv_len) {
630 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
631 len, tlv_len);
632 return -EINVAL;
633 }
634 len -= ALIGN(tlv_len, 4);
635 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
636
637 switch (tlv_type) {
638 case IWL_UCODE_TLV_INST:
639 set_sec_data(pieces, IWL_UCODE_REGULAR,
640 IWL_UCODE_SECTION_INST, tlv_data);
641 set_sec_size(pieces, IWL_UCODE_REGULAR,
642 IWL_UCODE_SECTION_INST, tlv_len);
643 set_sec_offset(pieces, IWL_UCODE_REGULAR,
644 IWL_UCODE_SECTION_INST,
645 IWLAGN_RTC_INST_LOWER_BOUND);
646 break;
647 case IWL_UCODE_TLV_DATA:
648 set_sec_data(pieces, IWL_UCODE_REGULAR,
649 IWL_UCODE_SECTION_DATA, tlv_data);
650 set_sec_size(pieces, IWL_UCODE_REGULAR,
651 IWL_UCODE_SECTION_DATA, tlv_len);
652 set_sec_offset(pieces, IWL_UCODE_REGULAR,
653 IWL_UCODE_SECTION_DATA,
654 IWLAGN_RTC_DATA_LOWER_BOUND);
655 break;
656 case IWL_UCODE_TLV_INIT:
657 set_sec_data(pieces, IWL_UCODE_INIT,
658 IWL_UCODE_SECTION_INST, tlv_data);
659 set_sec_size(pieces, IWL_UCODE_INIT,
660 IWL_UCODE_SECTION_INST, tlv_len);
661 set_sec_offset(pieces, IWL_UCODE_INIT,
662 IWL_UCODE_SECTION_INST,
663 IWLAGN_RTC_INST_LOWER_BOUND);
664 break;
665 case IWL_UCODE_TLV_INIT_DATA:
666 set_sec_data(pieces, IWL_UCODE_INIT,
667 IWL_UCODE_SECTION_DATA, tlv_data);
668 set_sec_size(pieces, IWL_UCODE_INIT,
669 IWL_UCODE_SECTION_DATA, tlv_len);
670 set_sec_offset(pieces, IWL_UCODE_INIT,
671 IWL_UCODE_SECTION_DATA,
672 IWLAGN_RTC_DATA_LOWER_BOUND);
673 break;
674 case IWL_UCODE_TLV_BOOT:
675 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
676 break;
677 case IWL_UCODE_TLV_PROBE_MAX_LEN:
678 if (tlv_len != sizeof(u32))
679 goto invalid_tlv_len;
680 capa->max_probe_length =
681 le32_to_cpup((__le32 *)tlv_data);
682 break;
683 case IWL_UCODE_TLV_PAN:
684 if (tlv_len)
685 goto invalid_tlv_len;
686 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
687 break;
688 case IWL_UCODE_TLV_FLAGS:
689 /* must be at least one u32 */
690 if (tlv_len < sizeof(u32))
691 goto invalid_tlv_len;
692 /* and a proper number of u32s */
693 if (tlv_len % sizeof(u32))
694 goto invalid_tlv_len;
695 /*
696 * This driver only reads the first u32 as
697 * right now no more features are defined,
698 * if that changes then either the driver
699 * will not work with the new firmware, or
700 * it'll not take advantage of new features.
701 */
702 capa->flags = le32_to_cpup((__le32 *)tlv_data);
703 break;
704 case IWL_UCODE_TLV_API_CHANGES_SET:
705 if (tlv_len != sizeof(struct iwl_ucode_api))
706 goto invalid_tlv_len;
707 if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
708 goto tlv_error;
709 break;
710 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
711 if (tlv_len != sizeof(struct iwl_ucode_capa))
712 goto invalid_tlv_len;
713 if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
714 goto tlv_error;
715 break;
716 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
717 if (tlv_len != sizeof(u32))
718 goto invalid_tlv_len;
719 pieces->init_evtlog_ptr =
720 le32_to_cpup((__le32 *)tlv_data);
721 break;
722 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
723 if (tlv_len != sizeof(u32))
724 goto invalid_tlv_len;
725 pieces->init_evtlog_size =
726 le32_to_cpup((__le32 *)tlv_data);
727 break;
728 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
729 if (tlv_len != sizeof(u32))
730 goto invalid_tlv_len;
731 pieces->init_errlog_ptr =
732 le32_to_cpup((__le32 *)tlv_data);
733 break;
734 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
735 if (tlv_len != sizeof(u32))
736 goto invalid_tlv_len;
737 pieces->inst_evtlog_ptr =
738 le32_to_cpup((__le32 *)tlv_data);
739 break;
740 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
741 if (tlv_len != sizeof(u32))
742 goto invalid_tlv_len;
743 pieces->inst_evtlog_size =
744 le32_to_cpup((__le32 *)tlv_data);
745 break;
746 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
747 if (tlv_len != sizeof(u32))
748 goto invalid_tlv_len;
749 pieces->inst_errlog_ptr =
750 le32_to_cpup((__le32 *)tlv_data);
751 break;
752 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
753 if (tlv_len)
754 goto invalid_tlv_len;
755 drv->fw.enhance_sensitivity_table = true;
756 break;
757 case IWL_UCODE_TLV_WOWLAN_INST:
758 set_sec_data(pieces, IWL_UCODE_WOWLAN,
759 IWL_UCODE_SECTION_INST, tlv_data);
760 set_sec_size(pieces, IWL_UCODE_WOWLAN,
761 IWL_UCODE_SECTION_INST, tlv_len);
762 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
763 IWL_UCODE_SECTION_INST,
764 IWLAGN_RTC_INST_LOWER_BOUND);
765 break;
766 case IWL_UCODE_TLV_WOWLAN_DATA:
767 set_sec_data(pieces, IWL_UCODE_WOWLAN,
768 IWL_UCODE_SECTION_DATA, tlv_data);
769 set_sec_size(pieces, IWL_UCODE_WOWLAN,
770 IWL_UCODE_SECTION_DATA, tlv_len);
771 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
772 IWL_UCODE_SECTION_DATA,
773 IWLAGN_RTC_DATA_LOWER_BOUND);
774 break;
775 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
776 if (tlv_len != sizeof(u32))
777 goto invalid_tlv_len;
778 capa->standard_phy_calibration_size =
779 le32_to_cpup((__le32 *)tlv_data);
780 break;
781 case IWL_UCODE_TLV_SEC_RT:
782 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
783 tlv_len);
784 drv->fw.mvm_fw = true;
785 break;
786 case IWL_UCODE_TLV_SEC_INIT:
787 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
788 tlv_len);
789 drv->fw.mvm_fw = true;
790 break;
791 case IWL_UCODE_TLV_SEC_WOWLAN:
792 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
793 tlv_len);
794 drv->fw.mvm_fw = true;
795 break;
796 case IWL_UCODE_TLV_DEF_CALIB:
797 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
798 goto invalid_tlv_len;
799 if (iwl_set_default_calib(drv, tlv_data))
800 goto tlv_error;
801 break;
802 case IWL_UCODE_TLV_PHY_SKU:
803 if (tlv_len != sizeof(u32))
804 goto invalid_tlv_len;
805 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
806 drv->fw.valid_tx_ant = (drv->fw.phy_config &
807 FW_PHY_CFG_TX_CHAIN) >>
808 FW_PHY_CFG_TX_CHAIN_POS;
809 drv->fw.valid_rx_ant = (drv->fw.phy_config &
810 FW_PHY_CFG_RX_CHAIN) >>
811 FW_PHY_CFG_RX_CHAIN_POS;
812 break;
813 case IWL_UCODE_TLV_SECURE_SEC_RT:
814 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
815 tlv_len);
816 drv->fw.mvm_fw = true;
817 break;
818 case IWL_UCODE_TLV_SECURE_SEC_INIT:
819 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
820 tlv_len);
821 drv->fw.mvm_fw = true;
822 break;
823 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
824 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
825 tlv_len);
826 drv->fw.mvm_fw = true;
827 break;
828 case IWL_UCODE_TLV_NUM_OF_CPU:
829 if (tlv_len != sizeof(u32))
830 goto invalid_tlv_len;
831 num_of_cpus =
832 le32_to_cpup((__le32 *)tlv_data);
833
834 if (num_of_cpus == 2) {
835 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
836 true;
837 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
838 true;
839 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
840 true;
841 } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
842 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
843 return -EINVAL;
844 }
845 break;
846 case IWL_UCODE_TLV_CSCHEME:
847 if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
848 goto invalid_tlv_len;
849 break;
850 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
851 if (tlv_len != sizeof(u32))
852 goto invalid_tlv_len;
853 capa->n_scan_channels =
854 le32_to_cpup((__le32 *)tlv_data);
855 break;
856 default:
857 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
858 break;
859 }
860 }
861
862 if (len) {
863 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
864 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
865 return -EINVAL;
866 }
867
868 return 0;
869
870 invalid_tlv_len:
871 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
872 tlv_error:
873 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
874
875 return -EINVAL;
876 }
877
878 static int iwl_alloc_ucode(struct iwl_drv *drv,
879 struct iwl_firmware_pieces *pieces,
880 enum iwl_ucode_type type)
881 {
882 int i;
883 for (i = 0;
884 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
885 i++)
886 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
887 get_sec(pieces, type, i)))
888 return -ENOMEM;
889 return 0;
890 }
891
892 static int validate_sec_sizes(struct iwl_drv *drv,
893 struct iwl_firmware_pieces *pieces,
894 const struct iwl_cfg *cfg)
895 {
896 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
897 get_sec_size(pieces, IWL_UCODE_REGULAR,
898 IWL_UCODE_SECTION_INST));
899 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
900 get_sec_size(pieces, IWL_UCODE_REGULAR,
901 IWL_UCODE_SECTION_DATA));
902 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
903 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
904 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
905 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
906
907 /* Verify that uCode images will fit in card's SRAM. */
908 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
909 cfg->max_inst_size) {
910 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
911 get_sec_size(pieces, IWL_UCODE_REGULAR,
912 IWL_UCODE_SECTION_INST));
913 return -1;
914 }
915
916 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
917 cfg->max_data_size) {
918 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
919 get_sec_size(pieces, IWL_UCODE_REGULAR,
920 IWL_UCODE_SECTION_DATA));
921 return -1;
922 }
923
924 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
925 cfg->max_inst_size) {
926 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
927 get_sec_size(pieces, IWL_UCODE_INIT,
928 IWL_UCODE_SECTION_INST));
929 return -1;
930 }
931
932 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
933 cfg->max_data_size) {
934 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
935 get_sec_size(pieces, IWL_UCODE_REGULAR,
936 IWL_UCODE_SECTION_DATA));
937 return -1;
938 }
939 return 0;
940 }
941
942 static struct iwl_op_mode *
943 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
944 {
945 const struct iwl_op_mode_ops *ops = op->ops;
946 struct dentry *dbgfs_dir = NULL;
947 struct iwl_op_mode *op_mode = NULL;
948
949 #ifdef CONFIG_IWLWIFI_DEBUGFS
950 drv->dbgfs_op_mode = debugfs_create_dir(op->name,
951 drv->dbgfs_drv);
952 if (!drv->dbgfs_op_mode) {
953 IWL_ERR(drv,
954 "failed to create opmode debugfs directory\n");
955 return op_mode;
956 }
957 dbgfs_dir = drv->dbgfs_op_mode;
958 #endif
959
960 op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
961
962 #ifdef CONFIG_IWLWIFI_DEBUGFS
963 if (!op_mode) {
964 debugfs_remove_recursive(drv->dbgfs_op_mode);
965 drv->dbgfs_op_mode = NULL;
966 }
967 #endif
968
969 return op_mode;
970 }
971
972 static void _iwl_op_mode_stop(struct iwl_drv *drv)
973 {
974 /* op_mode can be NULL if its start failed */
975 if (drv->op_mode) {
976 iwl_op_mode_stop(drv->op_mode);
977 drv->op_mode = NULL;
978
979 #ifdef CONFIG_IWLWIFI_DEBUGFS
980 debugfs_remove_recursive(drv->dbgfs_op_mode);
981 drv->dbgfs_op_mode = NULL;
982 #endif
983 }
984 }
985
986 /**
987 * iwl_req_fw_callback - callback when firmware was loaded
988 *
989 * If loaded successfully, copies the firmware into buffers
990 * for the card to fetch (via DMA).
991 */
992 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
993 {
994 struct iwl_drv *drv = context;
995 struct iwl_fw *fw = &drv->fw;
996 struct iwl_ucode_header *ucode;
997 struct iwlwifi_opmode_table *op;
998 int err;
999 struct iwl_firmware_pieces pieces;
1000 const unsigned int api_max = drv->cfg->ucode_api_max;
1001 unsigned int api_ok = drv->cfg->ucode_api_ok;
1002 const unsigned int api_min = drv->cfg->ucode_api_min;
1003 u32 api_ver;
1004 int i;
1005 bool load_module = false;
1006 u32 hw_rev = drv->trans->hw_rev;
1007
1008 fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1009 fw->ucode_capa.standard_phy_calibration_size =
1010 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1011 fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1012
1013 if (!api_ok)
1014 api_ok = api_max;
1015
1016 memset(&pieces, 0, sizeof(pieces));
1017
1018 if (!ucode_raw) {
1019 if (drv->fw_index <= api_ok)
1020 IWL_ERR(drv,
1021 "request for firmware file '%s' failed.\n",
1022 drv->firmware_name);
1023 goto try_again;
1024 }
1025
1026 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1027 drv->firmware_name, ucode_raw->size);
1028
1029 /* Make sure that we got at least the API version number */
1030 if (ucode_raw->size < 4) {
1031 IWL_ERR(drv, "File size way too small!\n");
1032 goto try_again;
1033 }
1034
1035 /* Data from ucode file: header followed by uCode images */
1036 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1037
1038 if (ucode->ver)
1039 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
1040 else
1041 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
1042 &fw->ucode_capa);
1043
1044 if (err)
1045 goto try_again;
1046
1047 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1048
1049 /*
1050 * api_ver should match the api version forming part of the
1051 * firmware filename ... but we don't check for that and only rely
1052 * on the API version read from firmware header from here on forward
1053 */
1054 /* no api version check required for experimental uCode */
1055 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1056 if (api_ver < api_min || api_ver > api_max) {
1057 IWL_ERR(drv,
1058 "Driver unable to support your firmware API. "
1059 "Driver supports v%u, firmware is v%u.\n",
1060 api_max, api_ver);
1061 goto try_again;
1062 }
1063
1064 if (api_ver < api_ok) {
1065 if (api_ok != api_max)
1066 IWL_ERR(drv, "Firmware has old API version, "
1067 "expected v%u through v%u, got v%u.\n",
1068 api_ok, api_max, api_ver);
1069 else
1070 IWL_ERR(drv, "Firmware has old API version, "
1071 "expected v%u, got v%u.\n",
1072 api_max, api_ver);
1073 IWL_ERR(drv, "New firmware can be obtained from "
1074 "http://www.intellinuxwireless.org/.\n");
1075 }
1076 }
1077
1078 /*
1079 * In mvm uCode there is no difference between data and instructions
1080 * sections.
1081 */
1082 if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
1083 goto try_again;
1084
1085 /* Allocate ucode buffers for card's bus-master loading ... */
1086
1087 /* Runtime instructions and 2 copies of data:
1088 * 1) unmodified from disk
1089 * 2) backup cache for save/restore during power-downs */
1090 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1091 if (iwl_alloc_ucode(drv, &pieces, i))
1092 goto out_free_fw;
1093
1094 /* Now that we can no longer fail, copy information */
1095
1096 /*
1097 * The (size - 16) / 12 formula is based on the information recorded
1098 * for each event, which is of mode 1 (including timestamp) for all
1099 * new microcodes that include this information.
1100 */
1101 fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
1102 if (pieces.init_evtlog_size)
1103 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1104 else
1105 fw->init_evtlog_size =
1106 drv->cfg->base_params->max_event_log_size;
1107 fw->init_errlog_ptr = pieces.init_errlog_ptr;
1108 fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1109 if (pieces.inst_evtlog_size)
1110 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1111 else
1112 fw->inst_evtlog_size =
1113 drv->cfg->base_params->max_event_log_size;
1114 fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
1115
1116 /*
1117 * figure out the offset of chain noise reset and gain commands
1118 * base on the size of standard phy calibration commands table size
1119 */
1120 if (fw->ucode_capa.standard_phy_calibration_size >
1121 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1122 fw->ucode_capa.standard_phy_calibration_size =
1123 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1124
1125 /* We have our copies now, allow OS release its copies */
1126 release_firmware(ucode_raw);
1127
1128 mutex_lock(&iwlwifi_opmode_table_mtx);
1129 if (fw->mvm_fw)
1130 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1131 else
1132 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1133
1134 IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1135 drv->fw.fw_version, op->name);
1136
1137 /* add this device to the list of devices using this op_mode */
1138 list_add_tail(&drv->list, &op->drv);
1139
1140 if (op->ops) {
1141 drv->op_mode = _iwl_op_mode_start(drv, op);
1142
1143 if (!drv->op_mode) {
1144 mutex_unlock(&iwlwifi_opmode_table_mtx);
1145 goto out_unbind;
1146 }
1147 } else {
1148 load_module = true;
1149 }
1150 mutex_unlock(&iwlwifi_opmode_table_mtx);
1151
1152 /*
1153 * Complete the firmware request last so that
1154 * a driver unbind (stop) doesn't run while we
1155 * are doing the start() above.
1156 */
1157 complete(&drv->request_firmware_complete);
1158
1159 /*
1160 * Load the module last so we don't block anything
1161 * else from proceeding if the module fails to load
1162 * or hangs loading.
1163 */
1164 if (load_module) {
1165 err = request_module("%s", op->name);
1166 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1167 if (err)
1168 IWL_ERR(drv,
1169 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1170 op->name, err);
1171 #endif
1172 }
1173
1174 /*
1175 * We may have loaded the wrong FW file in 8000 HW family if it is an
1176 * A-step card, and if drv->trans->hw_rev wasn't properly read when
1177 * the FW file had been loaded. (This might happen in SDIO.) In such a
1178 * case - unload and reload the correct file.
1179 *
1180 * TODO:
1181 * Once there is only one supported step for 8000 family - delete this!
1182 */
1183 if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1184 CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_A_STEP &&
1185 drv->trans->hw_rev != hw_rev) {
1186 char firmware_name[32];
1187
1188 /* Free previous FW resources */
1189 if (drv->op_mode)
1190 _iwl_op_mode_stop(drv);
1191 iwl_dealloc_ucode(drv);
1192
1193 /* Build name of correct-step FW */
1194 snprintf(firmware_name, sizeof(firmware_name),
1195 strrchr(drv->firmware_name, '-'));
1196 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
1197 "%s%s", drv->cfg->fw_name_pre, firmware_name);
1198
1199 /* Clear data before loading correct FW */
1200 list_del(&drv->list);
1201
1202 /* Request correct FW file this time */
1203 IWL_DEBUG_INFO(drv, "attempting to load A-step FW %s\n",
1204 drv->firmware_name);
1205 err = request_firmware(&ucode_raw, drv->firmware_name,
1206 drv->trans->dev);
1207 if (err) {
1208 IWL_ERR(drv, "Failed swapping FW!\n");
1209 goto out_unbind;
1210 }
1211
1212 /* Redo callback function - this time with right FW */
1213 iwl_req_fw_callback(ucode_raw, context);
1214 }
1215
1216 return;
1217
1218 try_again:
1219 /* try next, if any */
1220 release_firmware(ucode_raw);
1221 if (iwl_request_firmware(drv, false))
1222 goto out_unbind;
1223 return;
1224
1225 out_free_fw:
1226 IWL_ERR(drv, "failed to allocate pci memory\n");
1227 iwl_dealloc_ucode(drv);
1228 release_firmware(ucode_raw);
1229 out_unbind:
1230 complete(&drv->request_firmware_complete);
1231 device_release_driver(drv->trans->dev);
1232 }
1233
1234 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1235 const struct iwl_cfg *cfg)
1236 {
1237 struct iwl_drv *drv;
1238 int ret;
1239
1240 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1241 if (!drv) {
1242 ret = -ENOMEM;
1243 goto err;
1244 }
1245
1246 drv->trans = trans;
1247 drv->dev = trans->dev;
1248 drv->cfg = cfg;
1249
1250 init_completion(&drv->request_firmware_complete);
1251 INIT_LIST_HEAD(&drv->list);
1252
1253 #ifdef CONFIG_IWLWIFI_DEBUGFS
1254 /* Create the device debugfs entries. */
1255 drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1256 iwl_dbgfs_root);
1257
1258 if (!drv->dbgfs_drv) {
1259 IWL_ERR(drv, "failed to create debugfs directory\n");
1260 ret = -ENOMEM;
1261 goto err_free_drv;
1262 }
1263
1264 /* Create transport layer debugfs dir */
1265 drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1266
1267 if (!drv->trans->dbgfs_dir) {
1268 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1269 ret = -ENOMEM;
1270 goto err_free_dbgfs;
1271 }
1272 #endif
1273
1274 ret = iwl_request_firmware(drv, true);
1275 if (ret) {
1276 IWL_ERR(trans, "Couldn't request the fw\n");
1277 goto err_fw;
1278 }
1279
1280 return drv;
1281
1282 err_fw:
1283 #ifdef CONFIG_IWLWIFI_DEBUGFS
1284 err_free_dbgfs:
1285 debugfs_remove_recursive(drv->dbgfs_drv);
1286 err_free_drv:
1287 #endif
1288 kfree(drv);
1289 err:
1290 return ERR_PTR(ret);
1291 }
1292
1293 void iwl_drv_stop(struct iwl_drv *drv)
1294 {
1295 wait_for_completion(&drv->request_firmware_complete);
1296
1297 _iwl_op_mode_stop(drv);
1298
1299 iwl_dealloc_ucode(drv);
1300
1301 mutex_lock(&iwlwifi_opmode_table_mtx);
1302 /*
1303 * List is empty (this item wasn't added)
1304 * when firmware loading failed -- in that
1305 * case we can't remove it from any list.
1306 */
1307 if (!list_empty(&drv->list))
1308 list_del(&drv->list);
1309 mutex_unlock(&iwlwifi_opmode_table_mtx);
1310
1311 #ifdef CONFIG_IWLWIFI_DEBUGFS
1312 debugfs_remove_recursive(drv->dbgfs_drv);
1313 #endif
1314
1315 kfree(drv);
1316 }
1317
1318
1319 /* shared module parameters */
1320 struct iwl_mod_params iwlwifi_mod_params = {
1321 .restart_fw = true,
1322 .bt_coex_active = true,
1323 .power_level = IWL_POWER_INDEX_1,
1324 .wd_disable = true,
1325 #ifndef CONFIG_IWLWIFI_UAPSD
1326 .uapsd_disable = true,
1327 #endif /* CONFIG_IWLWIFI_UAPSD */
1328 /* the rest are 0 by default */
1329 };
1330 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1331
1332 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1333 {
1334 int i;
1335 struct iwl_drv *drv;
1336 struct iwlwifi_opmode_table *op;
1337
1338 mutex_lock(&iwlwifi_opmode_table_mtx);
1339 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1340 op = &iwlwifi_opmode_table[i];
1341 if (strcmp(op->name, name))
1342 continue;
1343 op->ops = ops;
1344 /* TODO: need to handle exceptional case */
1345 list_for_each_entry(drv, &op->drv, list)
1346 drv->op_mode = _iwl_op_mode_start(drv, op);
1347
1348 mutex_unlock(&iwlwifi_opmode_table_mtx);
1349 return 0;
1350 }
1351 mutex_unlock(&iwlwifi_opmode_table_mtx);
1352 return -EIO;
1353 }
1354 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1355
1356 void iwl_opmode_deregister(const char *name)
1357 {
1358 int i;
1359 struct iwl_drv *drv;
1360
1361 mutex_lock(&iwlwifi_opmode_table_mtx);
1362 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1363 if (strcmp(iwlwifi_opmode_table[i].name, name))
1364 continue;
1365 iwlwifi_opmode_table[i].ops = NULL;
1366
1367 /* call the stop routine for all devices */
1368 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1369 _iwl_op_mode_stop(drv);
1370
1371 mutex_unlock(&iwlwifi_opmode_table_mtx);
1372 return;
1373 }
1374 mutex_unlock(&iwlwifi_opmode_table_mtx);
1375 }
1376 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1377
1378 static int __init iwl_drv_init(void)
1379 {
1380 int i;
1381
1382 mutex_init(&iwlwifi_opmode_table_mtx);
1383
1384 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1385 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1386
1387 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1388 pr_info(DRV_COPYRIGHT "\n");
1389
1390 #ifdef CONFIG_IWLWIFI_DEBUGFS
1391 /* Create the root of iwlwifi debugfs subsystem. */
1392 iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1393
1394 if (!iwl_dbgfs_root)
1395 return -EFAULT;
1396 #endif
1397
1398 return iwl_pci_register_driver();
1399 }
1400 module_init(iwl_drv_init);
1401
1402 static void __exit iwl_drv_exit(void)
1403 {
1404 iwl_pci_unregister_driver();
1405
1406 #ifdef CONFIG_IWLWIFI_DEBUGFS
1407 debugfs_remove_recursive(iwl_dbgfs_root);
1408 #endif
1409 }
1410 module_exit(iwl_drv_exit);
1411
1412 #ifdef CONFIG_IWLWIFI_DEBUG
1413 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1414 S_IRUGO | S_IWUSR);
1415 MODULE_PARM_DESC(debug, "debug output mask");
1416 #endif
1417
1418 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1419 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1420 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1421 MODULE_PARM_DESC(11n_disable,
1422 "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1423 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1424 int, S_IRUGO);
1425 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1426 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1427 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1428
1429 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1430 int, S_IRUGO);
1431 MODULE_PARM_DESC(antenna_coupling,
1432 "specify antenna coupling in dB (default: 0 dB)");
1433
1434 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1435 MODULE_PARM_DESC(wd_disable,
1436 "Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1)");
1437
1438 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1439 MODULE_PARM_DESC(nvm_file, "NVM file name");
1440
1441 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1442 bool, S_IRUGO);
1443 #ifdef CONFIG_IWLWIFI_UAPSD
1444 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1445 #else
1446 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1447 #endif
1448
1449 /*
1450 * set bt_coex_active to true, uCode will do kill/defer
1451 * every time the priority line is asserted (BT is sending signals on the
1452 * priority line in the PCIx).
1453 * set bt_coex_active to false, uCode will ignore the BT activity and
1454 * perform the normal operation
1455 *
1456 * User might experience transmit issue on some platform due to WiFi/BT
1457 * co-exist problem. The possible behaviors are:
1458 * Able to scan and finding all the available AP
1459 * Not able to associate with any AP
1460 * On those platforms, WiFi communication can be restored by set
1461 * "bt_coex_active" module parameter to "false"
1462 *
1463 * default: bt_coex_active = true (BT_COEX_ENABLE)
1464 */
1465 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1466 bool, S_IRUGO);
1467 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1468
1469 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1470 MODULE_PARM_DESC(led_mode, "0=system default, "
1471 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1472
1473 module_param_named(power_save, iwlwifi_mod_params.power_save,
1474 bool, S_IRUGO);
1475 MODULE_PARM_DESC(power_save,
1476 "enable WiFi power management (default: disable)");
1477
1478 module_param_named(power_level, iwlwifi_mod_params.power_level,
1479 int, S_IRUGO);
1480 MODULE_PARM_DESC(power_level,
1481 "default power save level (range from 1 - 5, default: 1)");
1482
1483 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1484 MODULE_PARM_DESC(fw_monitor,
1485 "firmware monitor - to debug FW (default: false - needs lots of memory)");
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