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Merge tag 'mac80211-next-for-john-2014-11-04' of git://git.kernel.org/pub/scm/linux...
[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 /* private includes */
82 #include "iwl-fw-file.h"
83
84 /******************************************************************************
85 *
86 * module boiler plate
87 *
88 ******************************************************************************/
89
90 /*
91 * module name, copyright, version, etc.
92 */
93 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
94
95 #ifdef CONFIG_IWLWIFI_DEBUG
96 #define VD "d"
97 #else
98 #define VD
99 #endif
100
101 #define DRV_VERSION IWLWIFI_VERSION VD
102
103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
104 MODULE_VERSION(DRV_VERSION);
105 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
106 MODULE_LICENSE("GPL");
107
108 #ifdef CONFIG_IWLWIFI_DEBUGFS
109 static struct dentry *iwl_dbgfs_root;
110 #endif
111
112 /**
113 * struct iwl_drv - drv common data
114 * @list: list of drv structures using this opmode
115 * @fw: the iwl_fw structure
116 * @op_mode: the running op_mode
117 * @trans: transport layer
118 * @dev: for debug prints only
119 * @cfg: configuration struct
120 * @fw_index: firmware revision to try loading
121 * @firmware_name: composite filename of ucode file to load
122 * @request_firmware_complete: the firmware has been obtained from user space
123 */
124 struct iwl_drv {
125 struct list_head list;
126 struct iwl_fw fw;
127
128 struct iwl_op_mode *op_mode;
129 struct iwl_trans *trans;
130 struct device *dev;
131 const struct iwl_cfg *cfg;
132
133 int fw_index; /* firmware we're trying to load */
134 char firmware_name[32]; /* name of firmware file to load */
135
136 struct completion request_firmware_complete;
137
138 #ifdef CONFIG_IWLWIFI_DEBUGFS
139 struct dentry *dbgfs_drv;
140 struct dentry *dbgfs_trans;
141 struct dentry *dbgfs_op_mode;
142 #endif
143 };
144
145 enum {
146 DVM_OP_MODE = 0,
147 MVM_OP_MODE = 1,
148 };
149
150 /* Protects the table contents, i.e. the ops pointer & drv list */
151 static struct mutex iwlwifi_opmode_table_mtx;
152 static struct iwlwifi_opmode_table {
153 const char *name; /* name: iwldvm, iwlmvm, etc */
154 const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */
155 struct list_head drv; /* list of devices using this op_mode */
156 } iwlwifi_opmode_table[] = { /* ops set when driver is initialized */
157 [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
158 [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
159 };
160
161 #define IWL_DEFAULT_SCAN_CHANNELS 40
162
163 /*
164 * struct fw_sec: Just for the image parsing proccess.
165 * For the fw storage we are using struct fw_desc.
166 */
167 struct fw_sec {
168 const void *data; /* the sec data */
169 size_t size; /* section size */
170 u32 offset; /* offset of writing in the device */
171 };
172
173 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
174 {
175 vfree(desc->data);
176 desc->data = NULL;
177 desc->len = 0;
178 }
179
180 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
181 {
182 int i;
183 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
184 iwl_free_fw_desc(drv, &img->sec[i]);
185 }
186
187 static void iwl_dealloc_ucode(struct iwl_drv *drv)
188 {
189 int i;
190 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
191 iwl_free_fw_img(drv, drv->fw.img + i);
192 }
193
194 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
195 struct fw_sec *sec)
196 {
197 void *data;
198
199 desc->data = NULL;
200
201 if (!sec || !sec->size)
202 return -EINVAL;
203
204 data = vmalloc(sec->size);
205 if (!data)
206 return -ENOMEM;
207
208 desc->len = sec->size;
209 desc->offset = sec->offset;
210 memcpy(data, sec->data, desc->len);
211 desc->data = data;
212
213 return 0;
214 }
215
216 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
217 void *context);
218
219 #define UCODE_EXPERIMENTAL_INDEX 100
220 #define UCODE_EXPERIMENTAL_TAG "exp"
221
222 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
223 {
224 const char *name_pre = drv->cfg->fw_name_pre;
225 char tag[8];
226
227 if (first) {
228 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
229 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
230 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
231 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
232 #endif
233 drv->fw_index = drv->cfg->ucode_api_max;
234 sprintf(tag, "%d", drv->fw_index);
235 } else {
236 drv->fw_index--;
237 sprintf(tag, "%d", drv->fw_index);
238 }
239
240 if (drv->fw_index < drv->cfg->ucode_api_min) {
241 IWL_ERR(drv, "no suitable firmware found!\n");
242 return -ENOENT;
243 }
244
245 snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
246 name_pre, tag);
247
248 /*
249 * Starting 8000B - FW name format has changed. This overwrites the
250 * previous name and uses the new format.
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 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
262 "%s%s-%s.ucode", name_pre, rev_step, tag);
263 }
264
265 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
266 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
267 ? "EXPERIMENTAL " : "",
268 drv->firmware_name);
269
270 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
271 drv->trans->dev,
272 GFP_KERNEL, drv, iwl_req_fw_callback);
273 }
274
275 struct fw_img_parsing {
276 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
277 int sec_counter;
278 };
279
280 /*
281 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
282 */
283 struct fw_sec_parsing {
284 __le32 offset;
285 const u8 data[];
286 } __packed;
287
288 /**
289 * struct iwl_tlv_calib_data - parse the default calib data from TLV
290 *
291 * @ucode_type: the uCode to which the following default calib relates.
292 * @calib: default calibrations.
293 */
294 struct iwl_tlv_calib_data {
295 __le32 ucode_type;
296 struct iwl_tlv_calib_ctrl calib;
297 } __packed;
298
299 struct iwl_firmware_pieces {
300 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
301
302 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
303 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
304 };
305
306 /*
307 * These functions are just to extract uCode section data from the pieces
308 * structure.
309 */
310 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
311 enum iwl_ucode_type type,
312 int sec)
313 {
314 return &pieces->img[type].sec[sec];
315 }
316
317 static void set_sec_data(struct iwl_firmware_pieces *pieces,
318 enum iwl_ucode_type type,
319 int sec,
320 const void *data)
321 {
322 pieces->img[type].sec[sec].data = data;
323 }
324
325 static void set_sec_size(struct iwl_firmware_pieces *pieces,
326 enum iwl_ucode_type type,
327 int sec,
328 size_t size)
329 {
330 pieces->img[type].sec[sec].size = size;
331 }
332
333 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
334 enum iwl_ucode_type type,
335 int sec)
336 {
337 return pieces->img[type].sec[sec].size;
338 }
339
340 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
341 enum iwl_ucode_type type,
342 int sec,
343 u32 offset)
344 {
345 pieces->img[type].sec[sec].offset = offset;
346 }
347
348 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
349 {
350 int i, j;
351 struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
352 struct iwl_fw_cipher_scheme *fwcs;
353 struct ieee80211_cipher_scheme *cs;
354 u32 cipher;
355
356 if (len < sizeof(*l) ||
357 len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
358 return -EINVAL;
359
360 for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
361 fwcs = &l->cs[j];
362 cipher = le32_to_cpu(fwcs->cipher);
363
364 /* we skip schemes with zero cipher suite selector */
365 if (!cipher)
366 continue;
367
368 cs = &fw->cs[j++];
369 cs->cipher = cipher;
370 cs->iftype = BIT(NL80211_IFTYPE_STATION);
371 cs->hdr_len = fwcs->hdr_len;
372 cs->pn_len = fwcs->pn_len;
373 cs->pn_off = fwcs->pn_off;
374 cs->key_idx_off = fwcs->key_idx_off;
375 cs->key_idx_mask = fwcs->key_idx_mask;
376 cs->key_idx_shift = fwcs->key_idx_shift;
377 cs->mic_len = fwcs->mic_len;
378 }
379
380 return 0;
381 }
382
383 /*
384 * Gets uCode section from tlv.
385 */
386 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
387 const void *data, enum iwl_ucode_type type,
388 int size)
389 {
390 struct fw_img_parsing *img;
391 struct fw_sec *sec;
392 struct fw_sec_parsing *sec_parse;
393
394 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
395 return -1;
396
397 sec_parse = (struct fw_sec_parsing *)data;
398
399 img = &pieces->img[type];
400 sec = &img->sec[img->sec_counter];
401
402 sec->offset = le32_to_cpu(sec_parse->offset);
403 sec->data = sec_parse->data;
404 sec->size = size - sizeof(sec_parse->offset);
405
406 ++img->sec_counter;
407
408 return 0;
409 }
410
411 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
412 {
413 struct iwl_tlv_calib_data *def_calib =
414 (struct iwl_tlv_calib_data *)data;
415 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
416 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
417 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
418 ucode_type);
419 return -EINVAL;
420 }
421 drv->fw.default_calib[ucode_type].flow_trigger =
422 def_calib->calib.flow_trigger;
423 drv->fw.default_calib[ucode_type].event_trigger =
424 def_calib->calib.event_trigger;
425
426 return 0;
427 }
428
429 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
430 struct iwl_ucode_capabilities *capa)
431 {
432 const struct iwl_ucode_api *ucode_api = (void *)data;
433 u32 api_index = le32_to_cpu(ucode_api->api_index);
434
435 if (api_index >= IWL_API_ARRAY_SIZE) {
436 IWL_ERR(drv, "api_index larger than supported by driver\n");
437 return -EINVAL;
438 }
439
440 capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
441
442 return 0;
443 }
444
445 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
446 struct iwl_ucode_capabilities *capa)
447 {
448 const struct iwl_ucode_capa *ucode_capa = (void *)data;
449 u32 api_index = le32_to_cpu(ucode_capa->api_index);
450
451 if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
452 IWL_ERR(drv, "api_index larger than supported by driver\n");
453 return -EINVAL;
454 }
455
456 capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
457
458 return 0;
459 }
460
461 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
462 const struct firmware *ucode_raw,
463 struct iwl_firmware_pieces *pieces)
464 {
465 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
466 u32 api_ver, hdr_size, build;
467 char buildstr[25];
468 const u8 *src;
469
470 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
471 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
472
473 switch (api_ver) {
474 default:
475 hdr_size = 28;
476 if (ucode_raw->size < hdr_size) {
477 IWL_ERR(drv, "File size too small!\n");
478 return -EINVAL;
479 }
480 build = le32_to_cpu(ucode->u.v2.build);
481 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
482 le32_to_cpu(ucode->u.v2.inst_size));
483 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
484 le32_to_cpu(ucode->u.v2.data_size));
485 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
486 le32_to_cpu(ucode->u.v2.init_size));
487 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
488 le32_to_cpu(ucode->u.v2.init_data_size));
489 src = ucode->u.v2.data;
490 break;
491 case 0:
492 case 1:
493 case 2:
494 hdr_size = 24;
495 if (ucode_raw->size < hdr_size) {
496 IWL_ERR(drv, "File size too small!\n");
497 return -EINVAL;
498 }
499 build = 0;
500 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
501 le32_to_cpu(ucode->u.v1.inst_size));
502 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
503 le32_to_cpu(ucode->u.v1.data_size));
504 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
505 le32_to_cpu(ucode->u.v1.init_size));
506 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
507 le32_to_cpu(ucode->u.v1.init_data_size));
508 src = ucode->u.v1.data;
509 break;
510 }
511
512 if (build)
513 sprintf(buildstr, " build %u%s", build,
514 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
515 ? " (EXP)" : "");
516 else
517 buildstr[0] = '\0';
518
519 snprintf(drv->fw.fw_version,
520 sizeof(drv->fw.fw_version),
521 "%u.%u.%u.%u%s",
522 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
523 IWL_UCODE_MINOR(drv->fw.ucode_ver),
524 IWL_UCODE_API(drv->fw.ucode_ver),
525 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
526 buildstr);
527
528 /* Verify size of file vs. image size info in file's header */
529
530 if (ucode_raw->size != hdr_size +
531 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
532 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
533 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
534 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
535
536 IWL_ERR(drv,
537 "uCode file size %d does not match expected size\n",
538 (int)ucode_raw->size);
539 return -EINVAL;
540 }
541
542
543 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
544 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
545 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
546 IWLAGN_RTC_INST_LOWER_BOUND);
547 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
548 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
549 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
550 IWLAGN_RTC_DATA_LOWER_BOUND);
551 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
552 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
553 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
554 IWLAGN_RTC_INST_LOWER_BOUND);
555 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
556 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
557 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
558 IWLAGN_RTC_DATA_LOWER_BOUND);
559 return 0;
560 }
561
562 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
563 const struct firmware *ucode_raw,
564 struct iwl_firmware_pieces *pieces,
565 struct iwl_ucode_capabilities *capa)
566 {
567 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
568 struct iwl_ucode_tlv *tlv;
569 size_t len = ucode_raw->size;
570 const u8 *data;
571 u32 tlv_len;
572 enum iwl_ucode_tlv_type tlv_type;
573 const u8 *tlv_data;
574 char buildstr[25];
575 u32 build;
576 int num_of_cpus;
577
578 if (len < sizeof(*ucode)) {
579 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
580 return -EINVAL;
581 }
582
583 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
584 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
585 le32_to_cpu(ucode->magic));
586 return -EINVAL;
587 }
588
589 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
590 memcpy(drv->fw.human_readable, ucode->human_readable,
591 sizeof(drv->fw.human_readable));
592 build = le32_to_cpu(ucode->build);
593
594 if (build)
595 sprintf(buildstr, " build %u%s", build,
596 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
597 ? " (EXP)" : "");
598 else
599 buildstr[0] = '\0';
600
601 snprintf(drv->fw.fw_version,
602 sizeof(drv->fw.fw_version),
603 "%u.%u.%u.%u%s",
604 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
605 IWL_UCODE_MINOR(drv->fw.ucode_ver),
606 IWL_UCODE_API(drv->fw.ucode_ver),
607 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
608 buildstr);
609
610 data = ucode->data;
611
612 len -= sizeof(*ucode);
613
614 while (len >= sizeof(*tlv)) {
615 len -= sizeof(*tlv);
616 tlv = (void *)data;
617
618 tlv_len = le32_to_cpu(tlv->length);
619 tlv_type = le32_to_cpu(tlv->type);
620 tlv_data = tlv->data;
621
622 if (len < tlv_len) {
623 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
624 len, tlv_len);
625 return -EINVAL;
626 }
627 len -= ALIGN(tlv_len, 4);
628 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
629
630 switch (tlv_type) {
631 case IWL_UCODE_TLV_INST:
632 set_sec_data(pieces, IWL_UCODE_REGULAR,
633 IWL_UCODE_SECTION_INST, tlv_data);
634 set_sec_size(pieces, IWL_UCODE_REGULAR,
635 IWL_UCODE_SECTION_INST, tlv_len);
636 set_sec_offset(pieces, IWL_UCODE_REGULAR,
637 IWL_UCODE_SECTION_INST,
638 IWLAGN_RTC_INST_LOWER_BOUND);
639 break;
640 case IWL_UCODE_TLV_DATA:
641 set_sec_data(pieces, IWL_UCODE_REGULAR,
642 IWL_UCODE_SECTION_DATA, tlv_data);
643 set_sec_size(pieces, IWL_UCODE_REGULAR,
644 IWL_UCODE_SECTION_DATA, tlv_len);
645 set_sec_offset(pieces, IWL_UCODE_REGULAR,
646 IWL_UCODE_SECTION_DATA,
647 IWLAGN_RTC_DATA_LOWER_BOUND);
648 break;
649 case IWL_UCODE_TLV_INIT:
650 set_sec_data(pieces, IWL_UCODE_INIT,
651 IWL_UCODE_SECTION_INST, tlv_data);
652 set_sec_size(pieces, IWL_UCODE_INIT,
653 IWL_UCODE_SECTION_INST, tlv_len);
654 set_sec_offset(pieces, IWL_UCODE_INIT,
655 IWL_UCODE_SECTION_INST,
656 IWLAGN_RTC_INST_LOWER_BOUND);
657 break;
658 case IWL_UCODE_TLV_INIT_DATA:
659 set_sec_data(pieces, IWL_UCODE_INIT,
660 IWL_UCODE_SECTION_DATA, tlv_data);
661 set_sec_size(pieces, IWL_UCODE_INIT,
662 IWL_UCODE_SECTION_DATA, tlv_len);
663 set_sec_offset(pieces, IWL_UCODE_INIT,
664 IWL_UCODE_SECTION_DATA,
665 IWLAGN_RTC_DATA_LOWER_BOUND);
666 break;
667 case IWL_UCODE_TLV_BOOT:
668 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
669 break;
670 case IWL_UCODE_TLV_PROBE_MAX_LEN:
671 if (tlv_len != sizeof(u32))
672 goto invalid_tlv_len;
673 capa->max_probe_length =
674 le32_to_cpup((__le32 *)tlv_data);
675 break;
676 case IWL_UCODE_TLV_PAN:
677 if (tlv_len)
678 goto invalid_tlv_len;
679 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
680 break;
681 case IWL_UCODE_TLV_FLAGS:
682 /* must be at least one u32 */
683 if (tlv_len < sizeof(u32))
684 goto invalid_tlv_len;
685 /* and a proper number of u32s */
686 if (tlv_len % sizeof(u32))
687 goto invalid_tlv_len;
688 /*
689 * This driver only reads the first u32 as
690 * right now no more features are defined,
691 * if that changes then either the driver
692 * will not work with the new firmware, or
693 * it'll not take advantage of new features.
694 */
695 capa->flags = le32_to_cpup((__le32 *)tlv_data);
696 break;
697 case IWL_UCODE_TLV_API_CHANGES_SET:
698 if (tlv_len != sizeof(struct iwl_ucode_api))
699 goto invalid_tlv_len;
700 if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
701 goto tlv_error;
702 break;
703 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
704 if (tlv_len != sizeof(struct iwl_ucode_capa))
705 goto invalid_tlv_len;
706 if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
707 goto tlv_error;
708 break;
709 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
710 if (tlv_len != sizeof(u32))
711 goto invalid_tlv_len;
712 pieces->init_evtlog_ptr =
713 le32_to_cpup((__le32 *)tlv_data);
714 break;
715 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
716 if (tlv_len != sizeof(u32))
717 goto invalid_tlv_len;
718 pieces->init_evtlog_size =
719 le32_to_cpup((__le32 *)tlv_data);
720 break;
721 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
722 if (tlv_len != sizeof(u32))
723 goto invalid_tlv_len;
724 pieces->init_errlog_ptr =
725 le32_to_cpup((__le32 *)tlv_data);
726 break;
727 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
728 if (tlv_len != sizeof(u32))
729 goto invalid_tlv_len;
730 pieces->inst_evtlog_ptr =
731 le32_to_cpup((__le32 *)tlv_data);
732 break;
733 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
734 if (tlv_len != sizeof(u32))
735 goto invalid_tlv_len;
736 pieces->inst_evtlog_size =
737 le32_to_cpup((__le32 *)tlv_data);
738 break;
739 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
740 if (tlv_len != sizeof(u32))
741 goto invalid_tlv_len;
742 pieces->inst_errlog_ptr =
743 le32_to_cpup((__le32 *)tlv_data);
744 break;
745 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
746 if (tlv_len)
747 goto invalid_tlv_len;
748 drv->fw.enhance_sensitivity_table = true;
749 break;
750 case IWL_UCODE_TLV_WOWLAN_INST:
751 set_sec_data(pieces, IWL_UCODE_WOWLAN,
752 IWL_UCODE_SECTION_INST, tlv_data);
753 set_sec_size(pieces, IWL_UCODE_WOWLAN,
754 IWL_UCODE_SECTION_INST, tlv_len);
755 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
756 IWL_UCODE_SECTION_INST,
757 IWLAGN_RTC_INST_LOWER_BOUND);
758 break;
759 case IWL_UCODE_TLV_WOWLAN_DATA:
760 set_sec_data(pieces, IWL_UCODE_WOWLAN,
761 IWL_UCODE_SECTION_DATA, tlv_data);
762 set_sec_size(pieces, IWL_UCODE_WOWLAN,
763 IWL_UCODE_SECTION_DATA, tlv_len);
764 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
765 IWL_UCODE_SECTION_DATA,
766 IWLAGN_RTC_DATA_LOWER_BOUND);
767 break;
768 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
769 if (tlv_len != sizeof(u32))
770 goto invalid_tlv_len;
771 capa->standard_phy_calibration_size =
772 le32_to_cpup((__le32 *)tlv_data);
773 break;
774 case IWL_UCODE_TLV_SEC_RT:
775 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
776 tlv_len);
777 drv->fw.mvm_fw = true;
778 break;
779 case IWL_UCODE_TLV_SEC_INIT:
780 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
781 tlv_len);
782 drv->fw.mvm_fw = true;
783 break;
784 case IWL_UCODE_TLV_SEC_WOWLAN:
785 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
786 tlv_len);
787 drv->fw.mvm_fw = true;
788 break;
789 case IWL_UCODE_TLV_DEF_CALIB:
790 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
791 goto invalid_tlv_len;
792 if (iwl_set_default_calib(drv, tlv_data))
793 goto tlv_error;
794 break;
795 case IWL_UCODE_TLV_PHY_SKU:
796 if (tlv_len != sizeof(u32))
797 goto invalid_tlv_len;
798 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
799 drv->fw.valid_tx_ant = (drv->fw.phy_config &
800 FW_PHY_CFG_TX_CHAIN) >>
801 FW_PHY_CFG_TX_CHAIN_POS;
802 drv->fw.valid_rx_ant = (drv->fw.phy_config &
803 FW_PHY_CFG_RX_CHAIN) >>
804 FW_PHY_CFG_RX_CHAIN_POS;
805 break;
806 case IWL_UCODE_TLV_SECURE_SEC_RT:
807 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
808 tlv_len);
809 drv->fw.mvm_fw = true;
810 break;
811 case IWL_UCODE_TLV_SECURE_SEC_INIT:
812 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
813 tlv_len);
814 drv->fw.mvm_fw = true;
815 break;
816 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
817 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
818 tlv_len);
819 drv->fw.mvm_fw = true;
820 break;
821 case IWL_UCODE_TLV_NUM_OF_CPU:
822 if (tlv_len != sizeof(u32))
823 goto invalid_tlv_len;
824 num_of_cpus =
825 le32_to_cpup((__le32 *)tlv_data);
826
827 if (num_of_cpus == 2) {
828 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
829 true;
830 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
831 true;
832 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
833 true;
834 } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
835 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
836 return -EINVAL;
837 }
838 break;
839 case IWL_UCODE_TLV_CSCHEME:
840 if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
841 goto invalid_tlv_len;
842 break;
843 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
844 if (tlv_len != sizeof(u32))
845 goto invalid_tlv_len;
846 capa->n_scan_channels =
847 le32_to_cpup((__le32 *)tlv_data);
848 break;
849 default:
850 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
851 break;
852 }
853 }
854
855 if (len) {
856 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
857 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
858 return -EINVAL;
859 }
860
861 return 0;
862
863 invalid_tlv_len:
864 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
865 tlv_error:
866 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
867
868 return -EINVAL;
869 }
870
871 static int iwl_alloc_ucode(struct iwl_drv *drv,
872 struct iwl_firmware_pieces *pieces,
873 enum iwl_ucode_type type)
874 {
875 int i;
876 for (i = 0;
877 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
878 i++)
879 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
880 get_sec(pieces, type, i)))
881 return -ENOMEM;
882 return 0;
883 }
884
885 static int validate_sec_sizes(struct iwl_drv *drv,
886 struct iwl_firmware_pieces *pieces,
887 const struct iwl_cfg *cfg)
888 {
889 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
890 get_sec_size(pieces, IWL_UCODE_REGULAR,
891 IWL_UCODE_SECTION_INST));
892 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
893 get_sec_size(pieces, IWL_UCODE_REGULAR,
894 IWL_UCODE_SECTION_DATA));
895 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
896 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
897 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
898 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
899
900 /* Verify that uCode images will fit in card's SRAM. */
901 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
902 cfg->max_inst_size) {
903 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
904 get_sec_size(pieces, IWL_UCODE_REGULAR,
905 IWL_UCODE_SECTION_INST));
906 return -1;
907 }
908
909 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
910 cfg->max_data_size) {
911 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
912 get_sec_size(pieces, IWL_UCODE_REGULAR,
913 IWL_UCODE_SECTION_DATA));
914 return -1;
915 }
916
917 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
918 cfg->max_inst_size) {
919 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
920 get_sec_size(pieces, IWL_UCODE_INIT,
921 IWL_UCODE_SECTION_INST));
922 return -1;
923 }
924
925 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
926 cfg->max_data_size) {
927 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
928 get_sec_size(pieces, IWL_UCODE_REGULAR,
929 IWL_UCODE_SECTION_DATA));
930 return -1;
931 }
932 return 0;
933 }
934
935 static struct iwl_op_mode *
936 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
937 {
938 const struct iwl_op_mode_ops *ops = op->ops;
939 struct dentry *dbgfs_dir = NULL;
940 struct iwl_op_mode *op_mode = NULL;
941
942 #ifdef CONFIG_IWLWIFI_DEBUGFS
943 drv->dbgfs_op_mode = debugfs_create_dir(op->name,
944 drv->dbgfs_drv);
945 if (!drv->dbgfs_op_mode) {
946 IWL_ERR(drv,
947 "failed to create opmode debugfs directory\n");
948 return op_mode;
949 }
950 dbgfs_dir = drv->dbgfs_op_mode;
951 #endif
952
953 op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
954
955 #ifdef CONFIG_IWLWIFI_DEBUGFS
956 if (!op_mode) {
957 debugfs_remove_recursive(drv->dbgfs_op_mode);
958 drv->dbgfs_op_mode = NULL;
959 }
960 #endif
961
962 return op_mode;
963 }
964
965 static void _iwl_op_mode_stop(struct iwl_drv *drv)
966 {
967 /* op_mode can be NULL if its start failed */
968 if (drv->op_mode) {
969 iwl_op_mode_stop(drv->op_mode);
970 drv->op_mode = NULL;
971
972 #ifdef CONFIG_IWLWIFI_DEBUGFS
973 debugfs_remove_recursive(drv->dbgfs_op_mode);
974 drv->dbgfs_op_mode = NULL;
975 #endif
976 }
977 }
978
979 /**
980 * iwl_req_fw_callback - callback when firmware was loaded
981 *
982 * If loaded successfully, copies the firmware into buffers
983 * for the card to fetch (via DMA).
984 */
985 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
986 {
987 struct iwl_drv *drv = context;
988 struct iwl_fw *fw = &drv->fw;
989 struct iwl_ucode_header *ucode;
990 struct iwlwifi_opmode_table *op;
991 int err;
992 struct iwl_firmware_pieces pieces;
993 const unsigned int api_max = drv->cfg->ucode_api_max;
994 unsigned int api_ok = drv->cfg->ucode_api_ok;
995 const unsigned int api_min = drv->cfg->ucode_api_min;
996 u32 api_ver;
997 int i;
998 bool load_module = false;
999
1000 fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1001 fw->ucode_capa.standard_phy_calibration_size =
1002 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1003 fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1004
1005 if (!api_ok)
1006 api_ok = api_max;
1007
1008 memset(&pieces, 0, sizeof(pieces));
1009
1010 if (!ucode_raw) {
1011 if (drv->fw_index <= api_ok)
1012 IWL_ERR(drv,
1013 "request for firmware file '%s' failed.\n",
1014 drv->firmware_name);
1015 goto try_again;
1016 }
1017
1018 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1019 drv->firmware_name, ucode_raw->size);
1020
1021 /* Make sure that we got at least the API version number */
1022 if (ucode_raw->size < 4) {
1023 IWL_ERR(drv, "File size way too small!\n");
1024 goto try_again;
1025 }
1026
1027 /* Data from ucode file: header followed by uCode images */
1028 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1029
1030 if (ucode->ver)
1031 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
1032 else
1033 err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
1034 &fw->ucode_capa);
1035
1036 if (err)
1037 goto try_again;
1038
1039 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1040
1041 /*
1042 * api_ver should match the api version forming part of the
1043 * firmware filename ... but we don't check for that and only rely
1044 * on the API version read from firmware header from here on forward
1045 */
1046 /* no api version check required for experimental uCode */
1047 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1048 if (api_ver < api_min || api_ver > api_max) {
1049 IWL_ERR(drv,
1050 "Driver unable to support your firmware API. "
1051 "Driver supports v%u, firmware is v%u.\n",
1052 api_max, api_ver);
1053 goto try_again;
1054 }
1055
1056 if (api_ver < api_ok) {
1057 if (api_ok != api_max)
1058 IWL_ERR(drv, "Firmware has old API version, "
1059 "expected v%u through v%u, got v%u.\n",
1060 api_ok, api_max, api_ver);
1061 else
1062 IWL_ERR(drv, "Firmware has old API version, "
1063 "expected v%u, got v%u.\n",
1064 api_max, api_ver);
1065 IWL_ERR(drv, "New firmware can be obtained from "
1066 "http://www.intellinuxwireless.org/.\n");
1067 }
1068 }
1069
1070 /*
1071 * In mvm uCode there is no difference between data and instructions
1072 * sections.
1073 */
1074 if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
1075 goto try_again;
1076
1077 /* Allocate ucode buffers for card's bus-master loading ... */
1078
1079 /* Runtime instructions and 2 copies of data:
1080 * 1) unmodified from disk
1081 * 2) backup cache for save/restore during power-downs */
1082 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1083 if (iwl_alloc_ucode(drv, &pieces, i))
1084 goto out_free_fw;
1085
1086 /* Now that we can no longer fail, copy information */
1087
1088 /*
1089 * The (size - 16) / 12 formula is based on the information recorded
1090 * for each event, which is of mode 1 (including timestamp) for all
1091 * new microcodes that include this information.
1092 */
1093 fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
1094 if (pieces.init_evtlog_size)
1095 fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1096 else
1097 fw->init_evtlog_size =
1098 drv->cfg->base_params->max_event_log_size;
1099 fw->init_errlog_ptr = pieces.init_errlog_ptr;
1100 fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1101 if (pieces.inst_evtlog_size)
1102 fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1103 else
1104 fw->inst_evtlog_size =
1105 drv->cfg->base_params->max_event_log_size;
1106 fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
1107
1108 /*
1109 * figure out the offset of chain noise reset and gain commands
1110 * base on the size of standard phy calibration commands table size
1111 */
1112 if (fw->ucode_capa.standard_phy_calibration_size >
1113 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1114 fw->ucode_capa.standard_phy_calibration_size =
1115 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1116
1117 /* We have our copies now, allow OS release its copies */
1118 release_firmware(ucode_raw);
1119
1120 mutex_lock(&iwlwifi_opmode_table_mtx);
1121 if (fw->mvm_fw)
1122 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1123 else
1124 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1125
1126 IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1127 drv->fw.fw_version, op->name);
1128
1129 /* add this device to the list of devices using this op_mode */
1130 list_add_tail(&drv->list, &op->drv);
1131
1132 if (op->ops) {
1133 drv->op_mode = _iwl_op_mode_start(drv, op);
1134
1135 if (!drv->op_mode) {
1136 mutex_unlock(&iwlwifi_opmode_table_mtx);
1137 goto out_unbind;
1138 }
1139 } else {
1140 load_module = true;
1141 }
1142 mutex_unlock(&iwlwifi_opmode_table_mtx);
1143
1144 /*
1145 * Complete the firmware request last so that
1146 * a driver unbind (stop) doesn't run while we
1147 * are doing the start() above.
1148 */
1149 complete(&drv->request_firmware_complete);
1150
1151 /*
1152 * Load the module last so we don't block anything
1153 * else from proceeding if the module fails to load
1154 * or hangs loading.
1155 */
1156 if (load_module) {
1157 err = request_module("%s", op->name);
1158 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1159 if (err)
1160 IWL_ERR(drv,
1161 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1162 op->name, err);
1163 #endif
1164 }
1165 return;
1166
1167 try_again:
1168 /* try next, if any */
1169 release_firmware(ucode_raw);
1170 if (iwl_request_firmware(drv, false))
1171 goto out_unbind;
1172 return;
1173
1174 out_free_fw:
1175 IWL_ERR(drv, "failed to allocate pci memory\n");
1176 iwl_dealloc_ucode(drv);
1177 release_firmware(ucode_raw);
1178 out_unbind:
1179 complete(&drv->request_firmware_complete);
1180 device_release_driver(drv->trans->dev);
1181 }
1182
1183 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1184 const struct iwl_cfg *cfg)
1185 {
1186 struct iwl_drv *drv;
1187 int ret;
1188
1189 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1190 if (!drv) {
1191 ret = -ENOMEM;
1192 goto err;
1193 }
1194
1195 drv->trans = trans;
1196 drv->dev = trans->dev;
1197 drv->cfg = cfg;
1198
1199 init_completion(&drv->request_firmware_complete);
1200 INIT_LIST_HEAD(&drv->list);
1201
1202 #ifdef CONFIG_IWLWIFI_DEBUGFS
1203 /* Create the device debugfs entries. */
1204 drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1205 iwl_dbgfs_root);
1206
1207 if (!drv->dbgfs_drv) {
1208 IWL_ERR(drv, "failed to create debugfs directory\n");
1209 ret = -ENOMEM;
1210 goto err_free_drv;
1211 }
1212
1213 /* Create transport layer debugfs dir */
1214 drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1215
1216 if (!drv->trans->dbgfs_dir) {
1217 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1218 ret = -ENOMEM;
1219 goto err_free_dbgfs;
1220 }
1221 #endif
1222
1223 ret = iwl_request_firmware(drv, true);
1224 if (ret) {
1225 IWL_ERR(trans, "Couldn't request the fw\n");
1226 goto err_fw;
1227 }
1228
1229 return drv;
1230
1231 err_fw:
1232 #ifdef CONFIG_IWLWIFI_DEBUGFS
1233 err_free_dbgfs:
1234 debugfs_remove_recursive(drv->dbgfs_drv);
1235 err_free_drv:
1236 #endif
1237 kfree(drv);
1238 err:
1239 return ERR_PTR(ret);
1240 }
1241
1242 void iwl_drv_stop(struct iwl_drv *drv)
1243 {
1244 wait_for_completion(&drv->request_firmware_complete);
1245
1246 _iwl_op_mode_stop(drv);
1247
1248 iwl_dealloc_ucode(drv);
1249
1250 mutex_lock(&iwlwifi_opmode_table_mtx);
1251 /*
1252 * List is empty (this item wasn't added)
1253 * when firmware loading failed -- in that
1254 * case we can't remove it from any list.
1255 */
1256 if (!list_empty(&drv->list))
1257 list_del(&drv->list);
1258 mutex_unlock(&iwlwifi_opmode_table_mtx);
1259
1260 #ifdef CONFIG_IWLWIFI_DEBUGFS
1261 debugfs_remove_recursive(drv->dbgfs_drv);
1262 #endif
1263
1264 kfree(drv);
1265 }
1266
1267
1268 /* shared module parameters */
1269 struct iwl_mod_params iwlwifi_mod_params = {
1270 .restart_fw = true,
1271 .bt_coex_active = true,
1272 .power_level = IWL_POWER_INDEX_1,
1273 .wd_disable = true,
1274 #ifndef CONFIG_IWLWIFI_UAPSD
1275 .uapsd_disable = true,
1276 #endif /* CONFIG_IWLWIFI_UAPSD */
1277 /* the rest are 0 by default */
1278 };
1279 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1280
1281 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1282 {
1283 int i;
1284 struct iwl_drv *drv;
1285 struct iwlwifi_opmode_table *op;
1286
1287 mutex_lock(&iwlwifi_opmode_table_mtx);
1288 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1289 op = &iwlwifi_opmode_table[i];
1290 if (strcmp(op->name, name))
1291 continue;
1292 op->ops = ops;
1293 /* TODO: need to handle exceptional case */
1294 list_for_each_entry(drv, &op->drv, list)
1295 drv->op_mode = _iwl_op_mode_start(drv, op);
1296
1297 mutex_unlock(&iwlwifi_opmode_table_mtx);
1298 return 0;
1299 }
1300 mutex_unlock(&iwlwifi_opmode_table_mtx);
1301 return -EIO;
1302 }
1303 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1304
1305 void iwl_opmode_deregister(const char *name)
1306 {
1307 int i;
1308 struct iwl_drv *drv;
1309
1310 mutex_lock(&iwlwifi_opmode_table_mtx);
1311 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1312 if (strcmp(iwlwifi_opmode_table[i].name, name))
1313 continue;
1314 iwlwifi_opmode_table[i].ops = NULL;
1315
1316 /* call the stop routine for all devices */
1317 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1318 _iwl_op_mode_stop(drv);
1319
1320 mutex_unlock(&iwlwifi_opmode_table_mtx);
1321 return;
1322 }
1323 mutex_unlock(&iwlwifi_opmode_table_mtx);
1324 }
1325 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1326
1327 static int __init iwl_drv_init(void)
1328 {
1329 int i;
1330
1331 mutex_init(&iwlwifi_opmode_table_mtx);
1332
1333 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1334 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1335
1336 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1337 pr_info(DRV_COPYRIGHT "\n");
1338
1339 #ifdef CONFIG_IWLWIFI_DEBUGFS
1340 /* Create the root of iwlwifi debugfs subsystem. */
1341 iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1342
1343 if (!iwl_dbgfs_root)
1344 return -EFAULT;
1345 #endif
1346
1347 return iwl_pci_register_driver();
1348 }
1349 module_init(iwl_drv_init);
1350
1351 static void __exit iwl_drv_exit(void)
1352 {
1353 iwl_pci_unregister_driver();
1354
1355 #ifdef CONFIG_IWLWIFI_DEBUGFS
1356 debugfs_remove_recursive(iwl_dbgfs_root);
1357 #endif
1358 }
1359 module_exit(iwl_drv_exit);
1360
1361 #ifdef CONFIG_IWLWIFI_DEBUG
1362 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1363 S_IRUGO | S_IWUSR);
1364 MODULE_PARM_DESC(debug, "debug output mask");
1365 #endif
1366
1367 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1368 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1369 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1370 MODULE_PARM_DESC(11n_disable,
1371 "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1372 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1373 int, S_IRUGO);
1374 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1375 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1376 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1377
1378 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1379 int, S_IRUGO);
1380 MODULE_PARM_DESC(antenna_coupling,
1381 "specify antenna coupling in dB (default: 0 dB)");
1382
1383 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1384 MODULE_PARM_DESC(wd_disable,
1385 "Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1)");
1386
1387 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1388 MODULE_PARM_DESC(nvm_file, "NVM file name");
1389
1390 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1391 bool, S_IRUGO);
1392 #ifdef CONFIG_IWLWIFI_UAPSD
1393 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1394 #else
1395 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1396 #endif
1397
1398 /*
1399 * set bt_coex_active to true, uCode will do kill/defer
1400 * every time the priority line is asserted (BT is sending signals on the
1401 * priority line in the PCIx).
1402 * set bt_coex_active to false, uCode will ignore the BT activity and
1403 * perform the normal operation
1404 *
1405 * User might experience transmit issue on some platform due to WiFi/BT
1406 * co-exist problem. The possible behaviors are:
1407 * Able to scan and finding all the available AP
1408 * Not able to associate with any AP
1409 * On those platforms, WiFi communication can be restored by set
1410 * "bt_coex_active" module parameter to "false"
1411 *
1412 * default: bt_coex_active = true (BT_COEX_ENABLE)
1413 */
1414 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1415 bool, S_IRUGO);
1416 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1417
1418 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1419 MODULE_PARM_DESC(led_mode, "0=system default, "
1420 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1421
1422 module_param_named(power_save, iwlwifi_mod_params.power_save,
1423 bool, S_IRUGO);
1424 MODULE_PARM_DESC(power_save,
1425 "enable WiFi power management (default: disable)");
1426
1427 module_param_named(power_level, iwlwifi_mod_params.power_level,
1428 int, S_IRUGO);
1429 MODULE_PARM_DESC(power_level,
1430 "default power save level (range from 1 - 5, default: 1)");
1431
1432 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1433 MODULE_PARM_DESC(fw_monitor,
1434 "firmware monitor - to debug FW (default: false - needs lots of memory)");
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