projects / deliverable / linux.git / blob
? search:


aefd94cb6e91e30ecdd2d8b4808d3cc39bdc50b7
[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-debug.h"
73 #include "iwl-trans.h"
74 #include "iwl-op-mode.h"
75 #include "iwl-agn-hw.h"
76 #include "iwl-fw.h"
77 #include "iwl-config.h"
78 #include "iwl-modparams.h"
79
80 /* private includes */
81 #include "iwl-fw-file.h"
82
83 /******************************************************************************
84 *
85 * module boiler plate
86 *
87 ******************************************************************************/
88
89 /*
90 * module name, copyright, version, etc.
91 */
92 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
93
94 #ifdef CONFIG_IWLWIFI_DEBUG
95 #define VD "d"
96 #else
97 #define VD
98 #endif
99
100 #define DRV_VERSION IWLWIFI_VERSION VD
101
102 MODULE_DESCRIPTION(DRV_DESCRIPTION);
103 MODULE_VERSION(DRV_VERSION);
104 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
105 MODULE_LICENSE("GPL");
106
107 #ifdef CONFIG_IWLWIFI_DEBUGFS
108 static struct dentry *iwl_dbgfs_root;
109 #endif
110
111 /**
112 * struct iwl_drv - drv common data
113 * @list: list of drv structures using this opmode
114 * @fw: the iwl_fw structure
115 * @op_mode: the running op_mode
116 * @trans: transport layer
117 * @dev: for debug prints only
118 * @cfg: configuration struct
119 * @fw_index: firmware revision to try loading
120 * @firmware_name: composite filename of ucode file to load
121 * @request_firmware_complete: the firmware has been obtained from user space
122 */
123 struct iwl_drv {
124 struct list_head list;
125 struct iwl_fw fw;
126
127 struct iwl_op_mode *op_mode;
128 struct iwl_trans *trans;
129 struct device *dev;
130 const struct iwl_cfg *cfg;
131
132 int fw_index; /* firmware we're trying to load */
133 char firmware_name[32]; /* name of firmware file to load */
134
135 struct completion request_firmware_complete;
136
137 #ifdef CONFIG_IWLWIFI_DEBUGFS
138 struct dentry *dbgfs_drv;
139 struct dentry *dbgfs_trans;
140 struct dentry *dbgfs_op_mode;
141 #endif
142 };
143
144 enum {
145 DVM_OP_MODE = 0,
146 MVM_OP_MODE = 1,
147 };
148
149 /* Protects the table contents, i.e. the ops pointer & drv list */
150 static struct mutex iwlwifi_opmode_table_mtx;
151 static struct iwlwifi_opmode_table {
152 const char *name; /* name: iwldvm, iwlmvm, etc */
153 const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */
154 struct list_head drv; /* list of devices using this op_mode */
155 } iwlwifi_opmode_table[] = { /* ops set when driver is initialized */
156 [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
157 [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
158 };
159
160 #define IWL_DEFAULT_SCAN_CHANNELS 40
161
162 /*
163 * struct fw_sec: Just for the image parsing proccess.
164 * For the fw storage we are using struct fw_desc.
165 */
166 struct fw_sec {
167 const void *data; /* the sec data */
168 size_t size; /* section size */
169 u32 offset; /* offset of writing in the device */
170 };
171
172 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
173 {
174 vfree(desc->data);
175 desc->data = NULL;
176 desc->len = 0;
177 }
178
179 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
180 {
181 int i;
182 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
183 iwl_free_fw_desc(drv, &img->sec[i]);
184 }
185
186 static void iwl_dealloc_ucode(struct iwl_drv *drv)
187 {
188 int i;
189 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
190 iwl_free_fw_img(drv, drv->fw.img + i);
191 }
192
193 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
194 struct fw_sec *sec)
195 {
196 void *data;
197
198 desc->data = NULL;
199
200 if (!sec || !sec->size)
201 return -EINVAL;
202
203 data = vmalloc(sec->size);
204 if (!data)
205 return -ENOMEM;
206
207 desc->len = sec->size;
208 desc->offset = sec->offset;
209 memcpy(data, sec->data, desc->len);
210 desc->data = data;
211
212 return 0;
213 }
214
215 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
216 void *context);
217
218 #define UCODE_EXPERIMENTAL_INDEX 100
219 #define UCODE_EXPERIMENTAL_TAG "exp"
220
221 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
222 {
223 const char *name_pre = drv->cfg->fw_name_pre;
224 char tag[8];
225
226 if (first) {
227 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
228 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
229 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
230 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
231 #endif
232 drv->fw_index = drv->cfg->ucode_api_max;
233 sprintf(tag, "%d", drv->fw_index);
234 } else {
235 drv->fw_index--;
236 sprintf(tag, "%d", drv->fw_index);
237 }
238
239 if (drv->fw_index < drv->cfg->ucode_api_min) {
240 IWL_ERR(drv, "no suitable firmware found!\n");
241 return -ENOENT;
242 }
243
244 snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
245 name_pre, tag);
246
247 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
248 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
249 ? "EXPERIMENTAL " : "",
250 drv->firmware_name);
251
252 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
253 drv->trans->dev,
254 GFP_KERNEL, drv, iwl_req_fw_callback);
255 }
256
257 struct fw_img_parsing {
258 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
259 int sec_counter;
260 };
261
262 /*
263 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
264 */
265 struct fw_sec_parsing {
266 __le32 offset;
267 const u8 data[];
268 } __packed;
269
270 /**
271 * struct iwl_tlv_calib_data - parse the default calib data from TLV
272 *
273 * @ucode_type: the uCode to which the following default calib relates.
274 * @calib: default calibrations.
275 */
276 struct iwl_tlv_calib_data {
277 __le32 ucode_type;
278 struct iwl_tlv_calib_ctrl calib;
279 } __packed;
280
281 struct iwl_firmware_pieces {
282 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
283
284 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
285 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
286 };
287
288 /*
289 * These functions are just to extract uCode section data from the pieces
290 * structure.
291 */
292 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
293 enum iwl_ucode_type type,
294 int sec)
295 {
296 return &pieces->img[type].sec[sec];
297 }
298
299 static void set_sec_data(struct iwl_firmware_pieces *pieces,
300 enum iwl_ucode_type type,
301 int sec,
302 const void *data)
303 {
304 pieces->img[type].sec[sec].data = data;
305 }
306
307 static void set_sec_size(struct iwl_firmware_pieces *pieces,
308 enum iwl_ucode_type type,
309 int sec,
310 size_t size)
311 {
312 pieces->img[type].sec[sec].size = size;
313 }
314
315 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
316 enum iwl_ucode_type type,
317 int sec)
318 {
319 return pieces->img[type].sec[sec].size;
320 }
321
322 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
323 enum iwl_ucode_type type,
324 int sec,
325 u32 offset)
326 {
327 pieces->img[type].sec[sec].offset = offset;
328 }
329
330 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
331 {
332 int i, j;
333 struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
334 struct iwl_fw_cipher_scheme *fwcs;
335 struct ieee80211_cipher_scheme *cs;
336 u32 cipher;
337
338 if (len < sizeof(*l) ||
339 len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
340 return -EINVAL;
341
342 for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
343 fwcs = &l->cs[j];
344 cipher = le32_to_cpu(fwcs->cipher);
345
346 /* we skip schemes with zero cipher suite selector */
347 if (!cipher)
348 continue;
349
350 cs = &fw->cs[j++];
351 cs->cipher = cipher;
352 cs->iftype = BIT(NL80211_IFTYPE_STATION);
353 cs->hdr_len = fwcs->hdr_len;
354 cs->pn_len = fwcs->pn_len;
355 cs->pn_off = fwcs->pn_off;
356 cs->key_idx_off = fwcs->key_idx_off;
357 cs->key_idx_mask = fwcs->key_idx_mask;
358 cs->key_idx_shift = fwcs->key_idx_shift;
359 cs->mic_len = fwcs->mic_len;
360 }
361
362 return 0;
363 }
364
365 /*
366 * Gets uCode section from tlv.
367 */
368 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
369 const void *data, enum iwl_ucode_type type,
370 int size)
371 {
372 struct fw_img_parsing *img;
373 struct fw_sec *sec;
374 struct fw_sec_parsing *sec_parse;
375
376 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
377 return -1;
378
379 sec_parse = (struct fw_sec_parsing *)data;
380
381 img = &pieces->img[type];
382 sec = &img->sec[img->sec_counter];
383
384 sec->offset = le32_to_cpu(sec_parse->offset);
385 sec->data = sec_parse->data;
386 sec->size = size - sizeof(sec_parse->offset);
387
388 ++img->sec_counter;
389
390 return 0;
391 }
392
393 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
394 {
395 struct iwl_tlv_calib_data *def_calib =
396 (struct iwl_tlv_calib_data *)data;
397 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
398 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
399 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
400 ucode_type);
401 return -EINVAL;
402 }
403 drv->fw.default_calib[ucode_type].flow_trigger =
404 def_calib->calib.flow_trigger;
405 drv->fw.default_calib[ucode_type].event_trigger =
406 def_calib->calib.event_trigger;
407
408 return 0;
409 }
410
411 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
412 struct iwl_ucode_capabilities *capa)
413 {
414 const struct iwl_ucode_api *ucode_api = (void *)data;
415 u32 api_index = le32_to_cpu(ucode_api->api_index);
416
417 if (api_index >= IWL_API_ARRAY_SIZE) {
418 IWL_ERR(drv, "api_index larger than supported by driver\n");
419 return -EINVAL;
420 }
421
422 capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
423
424 return 0;
425 }
426
427 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
428 struct iwl_ucode_capabilities *capa)
429 {
430 const struct iwl_ucode_capa *ucode_capa = (void *)data;
431 u32 api_index = le32_to_cpu(ucode_capa->api_index);
432
433 if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
434 IWL_ERR(drv, "api_index larger than supported by driver\n");
435 return -EINVAL;
436 }
437
438 capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
439
440 return 0;
441 }
442
443 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
444 const struct firmware *ucode_raw,
445 struct iwl_firmware_pieces *pieces)
446 {
447 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
448 u32 api_ver, hdr_size, build;
449 char buildstr[25];
450 const u8 *src;
451
452 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
453 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
454
455 switch (api_ver) {
456 default:
457 hdr_size = 28;
458 if (ucode_raw->size < hdr_size) {
459 IWL_ERR(drv, "File size too small!\n");
460 return -EINVAL;
461 }
462 build = le32_to_cpu(ucode->u.v2.build);
463 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
464 le32_to_cpu(ucode->u.v2.inst_size));
465 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
466 le32_to_cpu(ucode->u.v2.data_size));
467 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
468 le32_to_cpu(ucode->u.v2.init_size));
469 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
470 le32_to_cpu(ucode->u.v2.init_data_size));
471 src = ucode->u.v2.data;
472 break;
473 case 0:
474 case 1:
475 case 2:
476 hdr_size = 24;
477 if (ucode_raw->size < hdr_size) {
478 IWL_ERR(drv, "File size too small!\n");
479 return -EINVAL;
480 }
481 build = 0;
482 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
483 le32_to_cpu(ucode->u.v1.inst_size));
484 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
485 le32_to_cpu(ucode->u.v1.data_size));
486 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
487 le32_to_cpu(ucode->u.v1.init_size));
488 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
489 le32_to_cpu(ucode->u.v1.init_data_size));
490 src = ucode->u.v1.data;
491 break;
492 }
493
494 if (build)
495 sprintf(buildstr, " build %u%s", build,
496 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
497 ? " (EXP)" : "");
498 else
499 buildstr[0] = '\0';
500
501 snprintf(drv->fw.fw_version,
502 sizeof(drv->fw.fw_version),
503 "%u.%u.%u.%u%s",
504 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
505 IWL_UCODE_MINOR(drv->fw.ucode_ver),
506 IWL_UCODE_API(drv->fw.ucode_ver),
507 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
508 buildstr);
509
510 /* Verify size of file vs. image size info in file's header */
511
512 if (ucode_raw->size != hdr_size +
513 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
514 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
515 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
516 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
517
518 IWL_ERR(drv,
519 "uCode file size %d does not match expected size\n",
520 (int)ucode_raw->size);
521 return -EINVAL;
522 }
523
524
525 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
526 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
527 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
528 IWLAGN_RTC_INST_LOWER_BOUND);
529 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
530 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
531 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
532 IWLAGN_RTC_DATA_LOWER_BOUND);
533 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
534 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
535 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
536 IWLAGN_RTC_INST_LOWER_BOUND);
537 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
538 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
539 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
540 IWLAGN_RTC_DATA_LOWER_BOUND);
541 return 0;
542 }
543
544 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
545 const struct firmware *ucode_raw,
546 struct iwl_firmware_pieces *pieces,
547 struct iwl_ucode_capabilities *capa)
548 {
549 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
550 struct iwl_ucode_tlv *tlv;
551 size_t len = ucode_raw->size;
552 const u8 *data;
553 u32 tlv_len;
554 enum iwl_ucode_tlv_type tlv_type;
555 const u8 *tlv_data;
556 char buildstr[25];
557 u32 build;
558 int num_of_cpus;
559
560 if (len < sizeof(*ucode)) {
561 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
562 return -EINVAL;
563 }
564
565 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
566 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
567 le32_to_cpu(ucode->magic));
568 return -EINVAL;
569 }
570
571 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
572 memcpy(drv->fw.human_readable, ucode->human_readable,
573 sizeof(drv->fw.human_readable));
574 build = le32_to_cpu(ucode->build);
575
576 if (build)
577 sprintf(buildstr, " build %u%s", build,
578 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
579 ? " (EXP)" : "");
580 else
581 buildstr[0] = '\0';
582
583 snprintf(drv->fw.fw_version,
584 sizeof(drv->fw.fw_version),
585 "%u.%u.%u.%u%s",
586 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
587 IWL_UCODE_MINOR(drv->fw.ucode_ver),
588 IWL_UCODE_API(drv->fw.ucode_ver),
589 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
590 buildstr);
591
592 data = ucode->data;
593
594 len -= sizeof(*ucode);
595
596 while (len >= sizeof(*tlv)) {
597 len -= sizeof(*tlv);
598 tlv = (void *)data;
599
600 tlv_len = le32_to_cpu(tlv->length);
601 tlv_type = le32_to_cpu(tlv->type);
602 tlv_data = tlv->data;
603
604 if (len < tlv_len) {
605 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
606 len, tlv_len);
607 return -EINVAL;
608 }
609 len -= ALIGN(tlv_len, 4);
610 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
611
612 switch (tlv_type) {
613 case IWL_UCODE_TLV_INST:
614 set_sec_data(pieces, IWL_UCODE_REGULAR,
615 IWL_UCODE_SECTION_INST, tlv_data);
616 set_sec_size(pieces, IWL_UCODE_REGULAR,
617 IWL_UCODE_SECTION_INST, tlv_len);
618 set_sec_offset(pieces, IWL_UCODE_REGULAR,
619 IWL_UCODE_SECTION_INST,
620 IWLAGN_RTC_INST_LOWER_BOUND);
621 break;
622 case IWL_UCODE_TLV_DATA:
623 set_sec_data(pieces, IWL_UCODE_REGULAR,
624 IWL_UCODE_SECTION_DATA, tlv_data);
625 set_sec_size(pieces, IWL_UCODE_REGULAR,
626 IWL_UCODE_SECTION_DATA, tlv_len);
627 set_sec_offset(pieces, IWL_UCODE_REGULAR,
628 IWL_UCODE_SECTION_DATA,
629 IWLAGN_RTC_DATA_LOWER_BOUND);
630 break;
631 case IWL_UCODE_TLV_INIT:
632 set_sec_data(pieces, IWL_UCODE_INIT,
633 IWL_UCODE_SECTION_INST, tlv_data);
634 set_sec_size(pieces, IWL_UCODE_INIT,
635 IWL_UCODE_SECTION_INST, tlv_len);
636 set_sec_offset(pieces, IWL_UCODE_INIT,
637 IWL_UCODE_SECTION_INST,
638 IWLAGN_RTC_INST_LOWER_BOUND);
639 break;
640 case IWL_UCODE_TLV_INIT_DATA:
641 set_sec_data(pieces, IWL_UCODE_INIT,
642 IWL_UCODE_SECTION_DATA, tlv_data);
643 set_sec_size(pieces, IWL_UCODE_INIT,
644 IWL_UCODE_SECTION_DATA, tlv_len);
645 set_sec_offset(pieces, IWL_UCODE_INIT,
646 IWL_UCODE_SECTION_DATA,
647 IWLAGN_RTC_DATA_LOWER_BOUND);
648 break;
649 case IWL_UCODE_TLV_BOOT:
650 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
651 break;
652 case IWL_UCODE_TLV_PROBE_MAX_LEN:
653 if (tlv_len != sizeof(u32))
654 goto invalid_tlv_len;
655 capa->max_probe_length =
656 le32_to_cpup((__le32 *)tlv_data);
657 break;
658 case IWL_UCODE_TLV_PAN:
659 if (tlv_len)
660 goto invalid_tlv_len;
661 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
662 break;
663 case IWL_UCODE_TLV_FLAGS:
664 /* must be at least one u32 */
665 if (tlv_len < sizeof(u32))
666 goto invalid_tlv_len;
667 /* and a proper number of u32s */
668 if (tlv_len % sizeof(u32))
669 goto invalid_tlv_len;
670 /*
671 * This driver only reads the first u32 as
672 * right now no more features are defined,
673 * if that changes then either the driver
674 * will not work with the new firmware, or
675 * it'll not take advantage of new features.
676 */
677 capa->flags = le32_to_cpup((__le32 *)tlv_data);
678 break;
679 case IWL_UCODE_TLV_API_CHANGES_SET:
680 if (tlv_len != sizeof(struct iwl_ucode_api))
681 goto invalid_tlv_len;
682 if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
683 goto tlv_error;
684 break;
685 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
686 if (tlv_len != sizeof(struct iwl_ucode_capa))
687 goto invalid_tlv_len;
688 if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
689 goto tlv_error;
690 break;
691 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
692 if (tlv_len != sizeof(u32))
693 goto invalid_tlv_len;
694 pieces->init_evtlog_ptr =
695 le32_to_cpup((__le32 *)tlv_data);
696 break;
697 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
698 if (tlv_len != sizeof(u32))
699 goto invalid_tlv_len;
700 pieces->init_evtlog_size =
701 le32_to_cpup((__le32 *)tlv_data);
702 break;
703 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
704 if (tlv_len != sizeof(u32))
705 goto invalid_tlv_len;
706 pieces->init_errlog_ptr =
707 le32_to_cpup((__le32 *)tlv_data);
708 break;
709 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
710 if (tlv_len != sizeof(u32))
711 goto invalid_tlv_len;
712 pieces->inst_evtlog_ptr =
713 le32_to_cpup((__le32 *)tlv_data);
714 break;
715 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
716 if (tlv_len != sizeof(u32))
717 goto invalid_tlv_len;
718 pieces->inst_evtlog_size =
719 le32_to_cpup((__le32 *)tlv_data);
720 break;
721 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
722 if (tlv_len != sizeof(u32))
723 goto invalid_tlv_len;
724 pieces->inst_errlog_ptr =
725 le32_to_cpup((__le32 *)tlv_data);
726 break;
727 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
728 if (tlv_len)
729 goto invalid_tlv_len;
730 drv->fw.enhance_sensitivity_table = true;
731 break;
732 case IWL_UCODE_TLV_WOWLAN_INST:
733 set_sec_data(pieces, IWL_UCODE_WOWLAN,
734 IWL_UCODE_SECTION_INST, tlv_data);
735 set_sec_size(pieces, IWL_UCODE_WOWLAN,
736 IWL_UCODE_SECTION_INST, tlv_len);
737 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
738 IWL_UCODE_SECTION_INST,
739 IWLAGN_RTC_INST_LOWER_BOUND);
740 break;
741 case IWL_UCODE_TLV_WOWLAN_DATA:
742 set_sec_data(pieces, IWL_UCODE_WOWLAN,
743 IWL_UCODE_SECTION_DATA, tlv_data);
744 set_sec_size(pieces, IWL_UCODE_WOWLAN,
745 IWL_UCODE_SECTION_DATA, tlv_len);
746 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
747 IWL_UCODE_SECTION_DATA,
748 IWLAGN_RTC_DATA_LOWER_BOUND);
749 break;
750 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
751 if (tlv_len != sizeof(u32))
752 goto invalid_tlv_len;
753 capa->standard_phy_calibration_size =
754 le32_to_cpup((__le32 *)tlv_data);
755 break;
756 case IWL_UCODE_TLV_SEC_RT:
757 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
758 tlv_len);
759 drv->fw.mvm_fw = true;
760 break;
761 case IWL_UCODE_TLV_SEC_INIT:
762 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
763 tlv_len);
764 drv->fw.mvm_fw = true;
765 break;
766 case IWL_UCODE_TLV_SEC_WOWLAN:
767 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
768 tlv_len);
769 drv->fw.mvm_fw = true;
770 break;
771 case IWL_UCODE_TLV_DEF_CALIB:
772 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
773 goto invalid_tlv_len;
774 if (iwl_set_default_calib(drv, tlv_data))
775 goto tlv_error;
776 break;
777 case IWL_UCODE_TLV_PHY_SKU:
778 if (tlv_len != sizeof(u32))
779 goto invalid_tlv_len;
780 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
781 drv->fw.valid_tx_ant = (drv->fw.phy_config &
782 FW_PHY_CFG_TX_CHAIN) >>
783 FW_PHY_CFG_TX_CHAIN_POS;
784 drv->fw.valid_rx_ant = (drv->fw.phy_config &
785 FW_PHY_CFG_RX_CHAIN) >>
786 FW_PHY_CFG_RX_CHAIN_POS;
787 break;
788 case IWL_UCODE_TLV_SECURE_SEC_RT:
789 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
790 tlv_len);
791 drv->fw.mvm_fw = true;
792 drv->fw.img[IWL_UCODE_REGULAR].is_secure = true;
793 break;
794 case IWL_UCODE_TLV_SECURE_SEC_INIT:
795 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
796 tlv_len);
797 drv->fw.mvm_fw = true;
798 drv->fw.img[IWL_UCODE_INIT].is_secure = true;
799 break;
800 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
801 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
802 tlv_len);
803 drv->fw.mvm_fw = true;
804 drv->fw.img[IWL_UCODE_WOWLAN].is_secure = true;
805 break;
806 case IWL_UCODE_TLV_NUM_OF_CPU:
807 if (tlv_len != sizeof(u32))
808 goto invalid_tlv_len;
809 num_of_cpus =
810 le32_to_cpup((__le32 *)tlv_data);
811
812 if (num_of_cpus == 2) {
813 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
814 true;
815 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
816 true;
817 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
818 true;
819 } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
820 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
821 return -EINVAL;
822 }
823 break;
824 case IWL_UCODE_TLV_CSCHEME:
825 if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
826 goto invalid_tlv_len;
827 break;
828 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
829 if (tlv_len != sizeof(u32))
830 goto invalid_tlv_len;
831 capa->n_scan_channels =
832 le32_to_cpup((__le32 *)tlv_data);
833 break;
834 default:
835 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
836 break;
837 }
838 }
839
840 if (len) {
841 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
842 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
843 return -EINVAL;
844 }
845
846 return 0;
847
848 invalid_tlv_len:
849 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
850 tlv_error:
851 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
852
853 return -EINVAL;
854 }
855
856 static int iwl_alloc_ucode(struct iwl_drv *drv,
857 struct iwl_firmware_pieces *pieces,
858 enum iwl_ucode_type type)
859 {
860 int i;
861 for (i = 0;
862 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
863 i++)
864 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
865 get_sec(pieces, type, i)))
866 return -ENOMEM;
867 return 0;
868 }
869
870 static int validate_sec_sizes(struct iwl_drv *drv,
871 struct iwl_firmware_pieces *pieces,
872 const struct iwl_cfg *cfg)
873 {
874 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
875 get_sec_size(pieces, IWL_UCODE_REGULAR,
876 IWL_UCODE_SECTION_INST));
877 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
878 get_sec_size(pieces, IWL_UCODE_REGULAR,
879 IWL_UCODE_SECTION_DATA));
880 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
881 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
882 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
883 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
884
885 /* Verify that uCode images will fit in card's SRAM. */
886 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
887 cfg->max_inst_size) {
888 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
889 get_sec_size(pieces, IWL_UCODE_REGULAR,
890 IWL_UCODE_SECTION_INST));
891 return -1;
892 }
893
894 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
895 cfg->max_data_size) {
896 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
897 get_sec_size(pieces, IWL_UCODE_REGULAR,
898 IWL_UCODE_SECTION_DATA));
899 return -1;
900 }
901
902 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
903 cfg->max_inst_size) {
904 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
905 get_sec_size(pieces, IWL_UCODE_INIT,
906 IWL_UCODE_SECTION_INST));
907 return -1;
908 }
909
910 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
911 cfg->max_data_size) {
912 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
913 get_sec_size(pieces, IWL_UCODE_REGULAR,
914 IWL_UCODE_SECTION_DATA));
915 return -1;
916 }
917 return 0;
918 }
919
920 static struct iwl_op_mode *
921 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
922 {
923 const struct iwl_op_mode_ops *ops = op->ops;
924 struct dentry *dbgfs_dir = NULL;
925 struct iwl_op_mode *op_mode = NULL;
926
927 #ifdef CONFIG_IWLWIFI_DEBUGFS
928 drv->dbgfs_op_mode = debugfs_create_dir(op->name,
929 drv->dbgfs_drv);
930 if (!drv->dbgfs_op_mode) {
931 IWL_ERR(drv,
932 "failed to create opmode debugfs directory\n");
933 return op_mode;
934 }
935 dbgfs_dir = drv->dbgfs_op_mode;
936 #endif
937
938 op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
939
940 #ifdef CONFIG_IWLWIFI_DEBUGFS
941 if (!op_mode) {
942 debugfs_remove_recursive(drv->dbgfs_op_mode);
943 drv->dbgfs_op_mode = NULL;
944 }
945 #endif
946
947 return op_mode;
948 }
949
950 static void _iwl_op_mode_stop(struct iwl_drv *drv)
951 {
952 /* op_mode can be NULL if its start failed */
953 if (drv->op_mode) {
954 iwl_op_mode_stop(drv->op_mode);
955 drv->op_mode = NULL;
956
957 #ifdef CONFIG_IWLWIFI_DEBUGFS
958 debugfs_remove_recursive(drv->dbgfs_op_mode);
959 drv->dbgfs_op_mode = NULL;
960 #endif
961 }
962 }
963
964 /**
965 * iwl_req_fw_callback - callback when firmware was loaded
966 *
967 * If loaded successfully, copies the firmware into buffers
968 * for the card to fetch (via DMA).
969 */
970 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
971 {
972 struct iwl_drv *drv = context;
973 struct iwl_fw *fw = &drv->fw;
974 struct iwl_ucode_header *ucode;
975 struct iwlwifi_opmode_table *op;
976 int err;
977 struct iwl_firmware_pieces pieces;
978 const unsigned int api_max = drv->cfg->ucode_api_max;
979 unsigned int api_ok = drv->cfg->ucode_api_ok;
980 const unsigned int api_min = drv->cfg->ucode_api_min;
981 u32 api_ver;
982 int i;
983 bool load_module = false;
984
985 fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
986 fw->ucode_capa.standard_phy_calibration_size =
987 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
988 fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
989
990 if (!api_ok)
991 api_ok = api_max;
992
993 memset(&pieces, 0, sizeof(pieces));
994
995 if (!ucode_raw) {
996 if (drv->fw_index <= api_ok)
997 IWL_ERR(drv,
998 "request for firmware file '%s' failed.\n",
999 drv->firmware_name);
1000 goto try_again;
1001 }
1002
1003 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1004 drv->firmware_name, ucode_raw->size);
1005
1006 /* Make sure that we got at least the API version number */
1007 if (ucode_raw->size < 4) {
1008 IWL_ERR(drv, "File size way too small!\n");
1009 goto try_again;
1010 }
1011
1012 /* Data from ucode file: header followed by uCode images */
1013 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1014
1015 if (ucode->ver)
1016 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
1017 else
1018 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
1019 &fw->ucode_capa);
1020
1021 if (err)
1022 goto try_again;
1023
1024 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1025
1026 /*
1027 * api_ver should match the api version forming part of the
1028 * firmware filename ... but we don't check for that and only rely
1029 * on the API version read from firmware header from here on forward
1030 */
1031 /* no api version check required for experimental uCode */
1032 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1033 if (api_ver < api_min || api_ver > api_max) {
1034 IWL_ERR(drv,
1035 "Driver unable to support your firmware API. "
1036 "Driver supports v%u, firmware is v%u.\n",
1037 api_max, api_ver);
1038 goto try_again;
1039 }
1040
1041 if (api_ver < api_ok) {
1042 if (api_ok != api_max)
1043 IWL_ERR(drv, "Firmware has old API version, "
1044 "expected v%u through v%u, got v%u.\n",
1045 api_ok, api_max, api_ver);
1046 else
1047 IWL_ERR(drv, "Firmware has old API version, "
1048 "expected v%u, got v%u.\n",
1049 api_max, api_ver);
1050 IWL_ERR(drv, "New firmware can be obtained from "
1051 "http://www.intellinuxwireless.org/.\n");
1052 }
1053 }
1054
1055 /*
1056 * In mvm uCode there is no difference between data and instructions
1057 * sections.
1058 */
1059 if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
1060 goto try_again;
1061
1062 /* Allocate ucode buffers for card's bus-master loading ... */
1063
1064 /* Runtime instructions and 2 copies of data:
1065 * 1) unmodified from disk
1066 * 2) backup cache for save/restore during power-downs */
1067 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1068 if (iwl_alloc_ucode(drv, &pieces, i))
1069 goto out_free_fw;
1070
1071 /* Now that we can no longer fail, copy information */
1072
1073 /*
1074 * The (size - 16) / 12 formula is based on the information recorded
1075 * for each event, which is of mode 1 (including timestamp) for all
1076 * new microcodes that include this information.
1077 */
1078 fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
1079 if (pieces.init_evtlog_size)
1080 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1081 else
1082 fw->init_evtlog_size =
1083 drv->cfg->base_params->max_event_log_size;
1084 fw->init_errlog_ptr = pieces.init_errlog_ptr;
1085 fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1086 if (pieces.inst_evtlog_size)
1087 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1088 else
1089 fw->inst_evtlog_size =
1090 drv->cfg->base_params->max_event_log_size;
1091 fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
1092
1093 /*
1094 * figure out the offset of chain noise reset and gain commands
1095 * base on the size of standard phy calibration commands table size
1096 */
1097 if (fw->ucode_capa.standard_phy_calibration_size >
1098 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1099 fw->ucode_capa.standard_phy_calibration_size =
1100 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1101
1102 /* We have our copies now, allow OS release its copies */
1103 release_firmware(ucode_raw);
1104
1105 mutex_lock(&iwlwifi_opmode_table_mtx);
1106 if (fw->mvm_fw)
1107 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1108 else
1109 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1110
1111 IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1112 drv->fw.fw_version, op->name);
1113
1114 /* add this device to the list of devices using this op_mode */
1115 list_add_tail(&drv->list, &op->drv);
1116
1117 if (op->ops) {
1118 drv->op_mode = _iwl_op_mode_start(drv, op);
1119
1120 if (!drv->op_mode) {
1121 mutex_unlock(&iwlwifi_opmode_table_mtx);
1122 goto out_unbind;
1123 }
1124 } else {
1125 load_module = true;
1126 }
1127 mutex_unlock(&iwlwifi_opmode_table_mtx);
1128
1129 /*
1130 * Complete the firmware request last so that
1131 * a driver unbind (stop) doesn't run while we
1132 * are doing the start() above.
1133 */
1134 complete(&drv->request_firmware_complete);
1135
1136 /*
1137 * Load the module last so we don't block anything
1138 * else from proceeding if the module fails to load
1139 * or hangs loading.
1140 */
1141 if (load_module) {
1142 err = request_module("%s", op->name);
1143 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1144 if (err)
1145 IWL_ERR(drv,
1146 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1147 op->name, err);
1148 #endif
1149 }
1150 return;
1151
1152 try_again:
1153 /* try next, if any */
1154 release_firmware(ucode_raw);
1155 if (iwl_request_firmware(drv, false))
1156 goto out_unbind;
1157 return;
1158
1159 out_free_fw:
1160 IWL_ERR(drv, "failed to allocate pci memory\n");
1161 iwl_dealloc_ucode(drv);
1162 release_firmware(ucode_raw);
1163 out_unbind:
1164 complete(&drv->request_firmware_complete);
1165 device_release_driver(drv->trans->dev);
1166 }
1167
1168 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1169 const struct iwl_cfg *cfg)
1170 {
1171 struct iwl_drv *drv;
1172 int ret;
1173
1174 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1175 if (!drv) {
1176 ret = -ENOMEM;
1177 goto err;
1178 }
1179
1180 drv->trans = trans;
1181 drv->dev = trans->dev;
1182 drv->cfg = cfg;
1183
1184 init_completion(&drv->request_firmware_complete);
1185 INIT_LIST_HEAD(&drv->list);
1186
1187 #ifdef CONFIG_IWLWIFI_DEBUGFS
1188 /* Create the device debugfs entries. */
1189 drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1190 iwl_dbgfs_root);
1191
1192 if (!drv->dbgfs_drv) {
1193 IWL_ERR(drv, "failed to create debugfs directory\n");
1194 ret = -ENOMEM;
1195 goto err_free_drv;
1196 }
1197
1198 /* Create transport layer debugfs dir */
1199 drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1200
1201 if (!drv->trans->dbgfs_dir) {
1202 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1203 ret = -ENOMEM;
1204 goto err_free_dbgfs;
1205 }
1206 #endif
1207
1208 ret = iwl_request_firmware(drv, true);
1209 if (ret) {
1210 IWL_ERR(trans, "Couldn't request the fw\n");
1211 goto err_fw;
1212 }
1213
1214 return drv;
1215
1216 err_fw:
1217 #ifdef CONFIG_IWLWIFI_DEBUGFS
1218 err_free_dbgfs:
1219 debugfs_remove_recursive(drv->dbgfs_drv);
1220 err_free_drv:
1221 #endif
1222 kfree(drv);
1223 err:
1224 return ERR_PTR(ret);
1225 }
1226
1227 void iwl_drv_stop(struct iwl_drv *drv)
1228 {
1229 wait_for_completion(&drv->request_firmware_complete);
1230
1231 _iwl_op_mode_stop(drv);
1232
1233 iwl_dealloc_ucode(drv);
1234
1235 mutex_lock(&iwlwifi_opmode_table_mtx);
1236 /*
1237 * List is empty (this item wasn't added)
1238 * when firmware loading failed -- in that
1239 * case we can't remove it from any list.
1240 */
1241 if (!list_empty(&drv->list))
1242 list_del(&drv->list);
1243 mutex_unlock(&iwlwifi_opmode_table_mtx);
1244
1245 #ifdef CONFIG_IWLWIFI_DEBUGFS
1246 debugfs_remove_recursive(drv->dbgfs_drv);
1247 #endif
1248
1249 kfree(drv);
1250 }
1251
1252
1253 /* shared module parameters */
1254 struct iwl_mod_params iwlwifi_mod_params = {
1255 .restart_fw = true,
1256 .bt_coex_active = true,
1257 .power_level = IWL_POWER_INDEX_1,
1258 .wd_disable = true,
1259 #ifndef CONFIG_IWLWIFI_UAPSD
1260 .uapsd_disable = true,
1261 #endif /* CONFIG_IWLWIFI_UAPSD */
1262 /* the rest are 0 by default */
1263 };
1264 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1265
1266 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1267 {
1268 int i;
1269 struct iwl_drv *drv;
1270 struct iwlwifi_opmode_table *op;
1271
1272 mutex_lock(&iwlwifi_opmode_table_mtx);
1273 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1274 op = &iwlwifi_opmode_table[i];
1275 if (strcmp(op->name, name))
1276 continue;
1277 op->ops = ops;
1278 /* TODO: need to handle exceptional case */
1279 list_for_each_entry(drv, &op->drv, list)
1280 drv->op_mode = _iwl_op_mode_start(drv, op);
1281
1282 mutex_unlock(&iwlwifi_opmode_table_mtx);
1283 return 0;
1284 }
1285 mutex_unlock(&iwlwifi_opmode_table_mtx);
1286 return -EIO;
1287 }
1288 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1289
1290 void iwl_opmode_deregister(const char *name)
1291 {
1292 int i;
1293 struct iwl_drv *drv;
1294
1295 mutex_lock(&iwlwifi_opmode_table_mtx);
1296 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1297 if (strcmp(iwlwifi_opmode_table[i].name, name))
1298 continue;
1299 iwlwifi_opmode_table[i].ops = NULL;
1300
1301 /* call the stop routine for all devices */
1302 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1303 _iwl_op_mode_stop(drv);
1304
1305 mutex_unlock(&iwlwifi_opmode_table_mtx);
1306 return;
1307 }
1308 mutex_unlock(&iwlwifi_opmode_table_mtx);
1309 }
1310 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1311
1312 static int __init iwl_drv_init(void)
1313 {
1314 int i;
1315
1316 mutex_init(&iwlwifi_opmode_table_mtx);
1317
1318 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1319 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1320
1321 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1322 pr_info(DRV_COPYRIGHT "\n");
1323
1324 #ifdef CONFIG_IWLWIFI_DEBUGFS
1325 /* Create the root of iwlwifi debugfs subsystem. */
1326 iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1327
1328 if (!iwl_dbgfs_root)
1329 return -EFAULT;
1330 #endif
1331
1332 return iwl_pci_register_driver();
1333 }
1334 module_init(iwl_drv_init);
1335
1336 static void __exit iwl_drv_exit(void)
1337 {
1338 iwl_pci_unregister_driver();
1339
1340 #ifdef CONFIG_IWLWIFI_DEBUGFS
1341 debugfs_remove_recursive(iwl_dbgfs_root);
1342 #endif
1343 }
1344 module_exit(iwl_drv_exit);
1345
1346 #ifdef CONFIG_IWLWIFI_DEBUG
1347 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1348 S_IRUGO | S_IWUSR);
1349 MODULE_PARM_DESC(debug, "debug output mask");
1350 #endif
1351
1352 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1353 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1354 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1355 MODULE_PARM_DESC(11n_disable,
1356 "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1357 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1358 int, S_IRUGO);
1359 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1360 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1361 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1362
1363 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1364 int, S_IRUGO);
1365 MODULE_PARM_DESC(antenna_coupling,
1366 "specify antenna coupling in dB (defualt: 0 dB)");
1367
1368 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1369 MODULE_PARM_DESC(wd_disable,
1370 "Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1)");
1371
1372 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1373 MODULE_PARM_DESC(nvm_file, "NVM file name");
1374
1375 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1376 bool, S_IRUGO);
1377 #ifdef CONFIG_IWLWIFI_UAPSD
1378 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1379 #else
1380 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1381 #endif
1382
1383 /*
1384 * set bt_coex_active to true, uCode will do kill/defer
1385 * every time the priority line is asserted (BT is sending signals on the
1386 * priority line in the PCIx).
1387 * set bt_coex_active to false, uCode will ignore the BT activity and
1388 * perform the normal operation
1389 *
1390 * User might experience transmit issue on some platform due to WiFi/BT
1391 * co-exist problem. The possible behaviors are:
1392 * Able to scan and finding all the available AP
1393 * Not able to associate with any AP
1394 * On those platforms, WiFi communication can be restored by set
1395 * "bt_coex_active" module parameter to "false"
1396 *
1397 * default: bt_coex_active = true (BT_COEX_ENABLE)
1398 */
1399 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1400 bool, S_IRUGO);
1401 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1402
1403 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1404 MODULE_PARM_DESC(led_mode, "0=system default, "
1405 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1406
1407 module_param_named(power_save, iwlwifi_mod_params.power_save,
1408 bool, S_IRUGO);
1409 MODULE_PARM_DESC(power_save,
1410 "enable WiFi power management (default: disable)");
1411
1412 module_param_named(power_level, iwlwifi_mod_params.power_level,
1413 int, S_IRUGO);
1414 MODULE_PARM_DESC(power_level,
1415 "default power save level (range from 1 - 5, default: 1)");
1416
1417 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1418 MODULE_PARM_DESC(fw_monitor,
1419 "firmware monitor - to debug FW (default: false - needs lots of memory)");
Linux kernel - Deliverables
This page took 0.059186 seconds and 4 git commands to generate.