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 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
88 MODULE_DESCRIPTION(DRV_DESCRIPTION);
89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
90 MODULE_LICENSE("GPL");
91
92 #ifdef CONFIG_IWLWIFI_DEBUGFS
93 static struct dentry *iwl_dbgfs_root;
94 #endif
95
96 /**
97 * struct iwl_drv - drv common data
98 * @list: list of drv structures using this opmode
99 * @fw: the iwl_fw structure
100 * @op_mode: the running op_mode
101 * @trans: transport layer
102 * @dev: for debug prints only
103 * @cfg: configuration struct
104 * @fw_index: firmware revision to try loading
105 * @firmware_name: composite filename of ucode file to load
106 * @request_firmware_complete: the firmware has been obtained from user space
107 */
108 struct iwl_drv {
109 struct list_head list;
110 struct iwl_fw fw;
111
112 struct iwl_op_mode *op_mode;
113 struct iwl_trans *trans;
114 struct device *dev;
115 const struct iwl_cfg *cfg;
116
117 int fw_index; /* firmware we're trying to load */
118 char firmware_name[32]; /* name of firmware file to load */
119
120 struct completion request_firmware_complete;
121
122 #ifdef CONFIG_IWLWIFI_DEBUGFS
123 struct dentry *dbgfs_drv;
124 struct dentry *dbgfs_trans;
125 struct dentry *dbgfs_op_mode;
126 #endif
127 };
128
129 enum {
130 DVM_OP_MODE = 0,
131 MVM_OP_MODE = 1,
132 };
133
134 /* Protects the table contents, i.e. the ops pointer & drv list */
135 static struct mutex iwlwifi_opmode_table_mtx;
136 static struct iwlwifi_opmode_table {
137 const char *name; /* name: iwldvm, iwlmvm, etc */
138 const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */
139 struct list_head drv; /* list of devices using this op_mode */
140 } iwlwifi_opmode_table[] = { /* ops set when driver is initialized */
141 [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
142 [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
143 };
144
145 #define IWL_DEFAULT_SCAN_CHANNELS 40
146
147 /*
148 * struct fw_sec: Just for the image parsing process.
149 * For the fw storage we are using struct fw_desc.
150 */
151 struct fw_sec {
152 const void *data; /* the sec data */
153 size_t size; /* section size */
154 u32 offset; /* offset of writing in the device */
155 };
156
iwl_free_fw_desc(struct iwl_drv * drv,struct fw_desc * desc)157 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
158 {
159 vfree(desc->data);
160 desc->data = NULL;
161 desc->len = 0;
162 }
163
iwl_free_fw_img(struct iwl_drv * drv,struct fw_img * img)164 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
165 {
166 int i;
167 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
168 iwl_free_fw_desc(drv, &img->sec[i]);
169 }
170
iwl_dealloc_ucode(struct iwl_drv * drv)171 static void iwl_dealloc_ucode(struct iwl_drv *drv)
172 {
173 int i;
174
175 kfree(drv->fw.dbg_dest_tlv);
176 for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++)
177 kfree(drv->fw.dbg_conf_tlv[i]);
178 for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++)
179 kfree(drv->fw.dbg_trigger_tlv[i]);
180
181 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
182 iwl_free_fw_img(drv, drv->fw.img + i);
183 }
184
iwl_alloc_fw_desc(struct iwl_drv * drv,struct fw_desc * desc,struct fw_sec * sec)185 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
186 struct fw_sec *sec)
187 {
188 void *data;
189
190 desc->data = NULL;
191
192 if (!sec || !sec->size)
193 return -EINVAL;
194
195 data = vmalloc(sec->size);
196 if (!data)
197 return -ENOMEM;
198
199 desc->len = sec->size;
200 desc->offset = sec->offset;
201 memcpy(data, sec->data, desc->len);
202 desc->data = data;
203
204 return 0;
205 }
206
207 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
208 void *context);
209
210 #define UCODE_EXPERIMENTAL_INDEX 100
211 #define UCODE_EXPERIMENTAL_TAG "exp"
212
iwl_request_firmware(struct iwl_drv * drv,bool first)213 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
214 {
215 const char *name_pre = drv->cfg->fw_name_pre;
216 char tag[8];
217
218 if (first) {
219 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
220 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
221 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
222 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
223 #endif
224 drv->fw_index = drv->cfg->ucode_api_max;
225 sprintf(tag, "%d", drv->fw_index);
226 } else {
227 drv->fw_index--;
228 sprintf(tag, "%d", drv->fw_index);
229 }
230
231 if (drv->fw_index < drv->cfg->ucode_api_min) {
232 IWL_ERR(drv, "no suitable firmware found!\n");
233 return -ENOENT;
234 }
235
236 snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
237 name_pre, tag);
238
239 /*
240 * Starting 8000B - FW name format has changed. This overwrites the
241 * previous name and uses the new format.
242 */
243 if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
244 char rev_step = 'A' + CSR_HW_REV_STEP(drv->trans->hw_rev);
245
246 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
247 "%s%c-%s.ucode", name_pre, rev_step, tag);
248 }
249
250 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
251 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
252 ? "EXPERIMENTAL " : "",
253 drv->firmware_name);
254
255 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
256 drv->trans->dev,
257 GFP_KERNEL, drv, iwl_req_fw_callback);
258 }
259
260 struct fw_img_parsing {
261 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
262 int sec_counter;
263 };
264
265 /*
266 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
267 */
268 struct fw_sec_parsing {
269 __le32 offset;
270 const u8 data[];
271 } __packed;
272
273 /**
274 * struct iwl_tlv_calib_data - parse the default calib data from TLV
275 *
276 * @ucode_type: the uCode to which the following default calib relates.
277 * @calib: default calibrations.
278 */
279 struct iwl_tlv_calib_data {
280 __le32 ucode_type;
281 struct iwl_tlv_calib_ctrl calib;
282 } __packed;
283
284 struct iwl_firmware_pieces {
285 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
286
287 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
288 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
289
290 /* FW debug data parsed for driver usage */
291 struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
292 struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
293 size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
294 struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
295 size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
296 };
297
298 /*
299 * These functions are just to extract uCode section data from the pieces
300 * structure.
301 */
get_sec(struct iwl_firmware_pieces * pieces,enum iwl_ucode_type type,int sec)302 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
303 enum iwl_ucode_type type,
304 int sec)
305 {
306 return &pieces->img[type].sec[sec];
307 }
308
set_sec_data(struct iwl_firmware_pieces * pieces,enum iwl_ucode_type type,int sec,const void * data)309 static void set_sec_data(struct iwl_firmware_pieces *pieces,
310 enum iwl_ucode_type type,
311 int sec,
312 const void *data)
313 {
314 pieces->img[type].sec[sec].data = data;
315 }
316
set_sec_size(struct iwl_firmware_pieces * pieces,enum iwl_ucode_type type,int sec,size_t size)317 static void set_sec_size(struct iwl_firmware_pieces *pieces,
318 enum iwl_ucode_type type,
319 int sec,
320 size_t size)
321 {
322 pieces->img[type].sec[sec].size = size;
323 }
324
get_sec_size(struct iwl_firmware_pieces * pieces,enum iwl_ucode_type type,int sec)325 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
326 enum iwl_ucode_type type,
327 int sec)
328 {
329 return pieces->img[type].sec[sec].size;
330 }
331
set_sec_offset(struct iwl_firmware_pieces * pieces,enum iwl_ucode_type type,int sec,u32 offset)332 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
333 enum iwl_ucode_type type,
334 int sec,
335 u32 offset)
336 {
337 pieces->img[type].sec[sec].offset = offset;
338 }
339
iwl_store_cscheme(struct iwl_fw * fw,const u8 * data,const u32 len)340 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
341 {
342 int i, j;
343 struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
344 struct iwl_fw_cipher_scheme *fwcs;
345 struct ieee80211_cipher_scheme *cs;
346 u32 cipher;
347
348 if (len < sizeof(*l) ||
349 len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
350 return -EINVAL;
351
352 for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
353 fwcs = &l->cs[j];
354 cipher = le32_to_cpu(fwcs->cipher);
355
356 /* we skip schemes with zero cipher suite selector */
357 if (!cipher)
358 continue;
359
360 cs = &fw->cs[j++];
361 cs->cipher = cipher;
362 cs->iftype = BIT(NL80211_IFTYPE_STATION);
363 cs->hdr_len = fwcs->hdr_len;
364 cs->pn_len = fwcs->pn_len;
365 cs->pn_off = fwcs->pn_off;
366 cs->key_idx_off = fwcs->key_idx_off;
367 cs->key_idx_mask = fwcs->key_idx_mask;
368 cs->key_idx_shift = fwcs->key_idx_shift;
369 cs->mic_len = fwcs->mic_len;
370 }
371
372 return 0;
373 }
374
375 /*
376 * Gets uCode section from tlv.
377 */
iwl_store_ucode_sec(struct iwl_firmware_pieces * pieces,const void * data,enum iwl_ucode_type type,int size)378 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
379 const void *data, enum iwl_ucode_type type,
380 int size)
381 {
382 struct fw_img_parsing *img;
383 struct fw_sec *sec;
384 struct fw_sec_parsing *sec_parse;
385
386 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
387 return -1;
388
389 sec_parse = (struct fw_sec_parsing *)data;
390
391 img = &pieces->img[type];
392 sec = &img->sec[img->sec_counter];
393
394 sec->offset = le32_to_cpu(sec_parse->offset);
395 sec->data = sec_parse->data;
396 sec->size = size - sizeof(sec_parse->offset);
397
398 ++img->sec_counter;
399
400 return 0;
401 }
402
iwl_set_default_calib(struct iwl_drv * drv,const u8 * data)403 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
404 {
405 struct iwl_tlv_calib_data *def_calib =
406 (struct iwl_tlv_calib_data *)data;
407 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
408 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
409 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
410 ucode_type);
411 return -EINVAL;
412 }
413 drv->fw.default_calib[ucode_type].flow_trigger =
414 def_calib->calib.flow_trigger;
415 drv->fw.default_calib[ucode_type].event_trigger =
416 def_calib->calib.event_trigger;
417
418 return 0;
419 }
420
iwl_set_ucode_api_flags(struct iwl_drv * drv,const u8 * data,struct iwl_ucode_capabilities * capa)421 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
422 struct iwl_ucode_capabilities *capa)
423 {
424 const struct iwl_ucode_api *ucode_api = (void *)data;
425 u32 api_index = le32_to_cpu(ucode_api->api_index);
426
427 if (api_index >= IWL_API_ARRAY_SIZE) {
428 IWL_ERR(drv, "api_index larger than supported by driver\n");
429 return -EINVAL;
430 }
431
432 capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
433
434 return 0;
435 }
436
iwl_set_ucode_capabilities(struct iwl_drv * drv,const u8 * data,struct iwl_ucode_capabilities * capa)437 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
438 struct iwl_ucode_capabilities *capa)
439 {
440 const struct iwl_ucode_capa *ucode_capa = (void *)data;
441 u32 api_index = le32_to_cpu(ucode_capa->api_index);
442
443 if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
444 IWL_ERR(drv, "api_index larger than supported by driver\n");
445 return -EINVAL;
446 }
447
448 capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
449
450 return 0;
451 }
452
iwl_parse_v1_v2_firmware(struct iwl_drv * drv,const struct firmware * ucode_raw,struct iwl_firmware_pieces * pieces)453 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
454 const struct firmware *ucode_raw,
455 struct iwl_firmware_pieces *pieces)
456 {
457 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
458 u32 api_ver, hdr_size, build;
459 char buildstr[25];
460 const u8 *src;
461
462 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
463 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
464
465 switch (api_ver) {
466 default:
467 hdr_size = 28;
468 if (ucode_raw->size < hdr_size) {
469 IWL_ERR(drv, "File size too small!\n");
470 return -EINVAL;
471 }
472 build = le32_to_cpu(ucode->u.v2.build);
473 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
474 le32_to_cpu(ucode->u.v2.inst_size));
475 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
476 le32_to_cpu(ucode->u.v2.data_size));
477 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
478 le32_to_cpu(ucode->u.v2.init_size));
479 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
480 le32_to_cpu(ucode->u.v2.init_data_size));
481 src = ucode->u.v2.data;
482 break;
483 case 0:
484 case 1:
485 case 2:
486 hdr_size = 24;
487 if (ucode_raw->size < hdr_size) {
488 IWL_ERR(drv, "File size too small!\n");
489 return -EINVAL;
490 }
491 build = 0;
492 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
493 le32_to_cpu(ucode->u.v1.inst_size));
494 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
495 le32_to_cpu(ucode->u.v1.data_size));
496 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
497 le32_to_cpu(ucode->u.v1.init_size));
498 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
499 le32_to_cpu(ucode->u.v1.init_data_size));
500 src = ucode->u.v1.data;
501 break;
502 }
503
504 if (build)
505 sprintf(buildstr, " build %u%s", build,
506 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
507 ? " (EXP)" : "");
508 else
509 buildstr[0] = '\0';
510
511 snprintf(drv->fw.fw_version,
512 sizeof(drv->fw.fw_version),
513 "%u.%u.%u.%u%s",
514 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
515 IWL_UCODE_MINOR(drv->fw.ucode_ver),
516 IWL_UCODE_API(drv->fw.ucode_ver),
517 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
518 buildstr);
519
520 /* Verify size of file vs. image size info in file's header */
521
522 if (ucode_raw->size != hdr_size +
523 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
524 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
525 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
526 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
527
528 IWL_ERR(drv,
529 "uCode file size %d does not match expected size\n",
530 (int)ucode_raw->size);
531 return -EINVAL;
532 }
533
534
535 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
536 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
537 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
538 IWLAGN_RTC_INST_LOWER_BOUND);
539 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
540 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
541 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
542 IWLAGN_RTC_DATA_LOWER_BOUND);
543 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
544 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
545 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
546 IWLAGN_RTC_INST_LOWER_BOUND);
547 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
548 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
549 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
550 IWLAGN_RTC_DATA_LOWER_BOUND);
551 return 0;
552 }
553
iwl_parse_tlv_firmware(struct iwl_drv * drv,const struct firmware * ucode_raw,struct iwl_firmware_pieces * pieces,struct iwl_ucode_capabilities * capa)554 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
555 const struct firmware *ucode_raw,
556 struct iwl_firmware_pieces *pieces,
557 struct iwl_ucode_capabilities *capa)
558 {
559 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
560 struct iwl_ucode_tlv *tlv;
561 size_t len = ucode_raw->size;
562 const u8 *data;
563 u32 tlv_len;
564 enum iwl_ucode_tlv_type tlv_type;
565 const u8 *tlv_data;
566 char buildstr[25];
567 u32 build;
568 int num_of_cpus;
569 bool usniffer_images = false;
570 bool usniffer_req = false;
571
572 if (len < sizeof(*ucode)) {
573 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
574 return -EINVAL;
575 }
576
577 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
578 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
579 le32_to_cpu(ucode->magic));
580 return -EINVAL;
581 }
582
583 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
584 memcpy(drv->fw.human_readable, ucode->human_readable,
585 sizeof(drv->fw.human_readable));
586 build = le32_to_cpu(ucode->build);
587
588 if (build)
589 sprintf(buildstr, " build %u%s", build,
590 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
591 ? " (EXP)" : "");
592 else
593 buildstr[0] = '\0';
594
595 snprintf(drv->fw.fw_version,
596 sizeof(drv->fw.fw_version),
597 "%u.%u.%u.%u%s",
598 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
599 IWL_UCODE_MINOR(drv->fw.ucode_ver),
600 IWL_UCODE_API(drv->fw.ucode_ver),
601 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
602 buildstr);
603
604 data = ucode->data;
605
606 len -= sizeof(*ucode);
607
608 while (len >= sizeof(*tlv)) {
609 len -= sizeof(*tlv);
610 tlv = (void *)data;
611
612 tlv_len = le32_to_cpu(tlv->length);
613 tlv_type = le32_to_cpu(tlv->type);
614 tlv_data = tlv->data;
615
616 if (len < tlv_len) {
617 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
618 len, tlv_len);
619 return -EINVAL;
620 }
621 len -= ALIGN(tlv_len, 4);
622 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
623
624 switch (tlv_type) {
625 case IWL_UCODE_TLV_INST:
626 set_sec_data(pieces, IWL_UCODE_REGULAR,
627 IWL_UCODE_SECTION_INST, tlv_data);
628 set_sec_size(pieces, IWL_UCODE_REGULAR,
629 IWL_UCODE_SECTION_INST, tlv_len);
630 set_sec_offset(pieces, IWL_UCODE_REGULAR,
631 IWL_UCODE_SECTION_INST,
632 IWLAGN_RTC_INST_LOWER_BOUND);
633 break;
634 case IWL_UCODE_TLV_DATA:
635 set_sec_data(pieces, IWL_UCODE_REGULAR,
636 IWL_UCODE_SECTION_DATA, tlv_data);
637 set_sec_size(pieces, IWL_UCODE_REGULAR,
638 IWL_UCODE_SECTION_DATA, tlv_len);
639 set_sec_offset(pieces, IWL_UCODE_REGULAR,
640 IWL_UCODE_SECTION_DATA,
641 IWLAGN_RTC_DATA_LOWER_BOUND);
642 break;
643 case IWL_UCODE_TLV_INIT:
644 set_sec_data(pieces, IWL_UCODE_INIT,
645 IWL_UCODE_SECTION_INST, tlv_data);
646 set_sec_size(pieces, IWL_UCODE_INIT,
647 IWL_UCODE_SECTION_INST, tlv_len);
648 set_sec_offset(pieces, IWL_UCODE_INIT,
649 IWL_UCODE_SECTION_INST,
650 IWLAGN_RTC_INST_LOWER_BOUND);
651 break;
652 case IWL_UCODE_TLV_INIT_DATA:
653 set_sec_data(pieces, IWL_UCODE_INIT,
654 IWL_UCODE_SECTION_DATA, tlv_data);
655 set_sec_size(pieces, IWL_UCODE_INIT,
656 IWL_UCODE_SECTION_DATA, tlv_len);
657 set_sec_offset(pieces, IWL_UCODE_INIT,
658 IWL_UCODE_SECTION_DATA,
659 IWLAGN_RTC_DATA_LOWER_BOUND);
660 break;
661 case IWL_UCODE_TLV_BOOT:
662 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
663 break;
664 case IWL_UCODE_TLV_PROBE_MAX_LEN:
665 if (tlv_len != sizeof(u32))
666 goto invalid_tlv_len;
667 capa->max_probe_length =
668 le32_to_cpup((__le32 *)tlv_data);
669 break;
670 case IWL_UCODE_TLV_PAN:
671 if (tlv_len)
672 goto invalid_tlv_len;
673 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
674 break;
675 case IWL_UCODE_TLV_FLAGS:
676 /* must be at least one u32 */
677 if (tlv_len < sizeof(u32))
678 goto invalid_tlv_len;
679 /* and a proper number of u32s */
680 if (tlv_len % sizeof(u32))
681 goto invalid_tlv_len;
682 /*
683 * This driver only reads the first u32 as
684 * right now no more features are defined,
685 * if that changes then either the driver
686 * will not work with the new firmware, or
687 * it'll not take advantage of new features.
688 */
689 capa->flags = le32_to_cpup((__le32 *)tlv_data);
690 break;
691 case IWL_UCODE_TLV_API_CHANGES_SET:
692 if (tlv_len != sizeof(struct iwl_ucode_api))
693 goto invalid_tlv_len;
694 if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
695 goto tlv_error;
696 break;
697 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
698 if (tlv_len != sizeof(struct iwl_ucode_capa))
699 goto invalid_tlv_len;
700 if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
701 goto tlv_error;
702 break;
703 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
704 if (tlv_len != sizeof(u32))
705 goto invalid_tlv_len;
706 pieces->init_evtlog_ptr =
707 le32_to_cpup((__le32 *)tlv_data);
708 break;
709 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
710 if (tlv_len != sizeof(u32))
711 goto invalid_tlv_len;
712 pieces->init_evtlog_size =
713 le32_to_cpup((__le32 *)tlv_data);
714 break;
715 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
716 if (tlv_len != sizeof(u32))
717 goto invalid_tlv_len;
718 pieces->init_errlog_ptr =
719 le32_to_cpup((__le32 *)tlv_data);
720 break;
721 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
722 if (tlv_len != sizeof(u32))
723 goto invalid_tlv_len;
724 pieces->inst_evtlog_ptr =
725 le32_to_cpup((__le32 *)tlv_data);
726 break;
727 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
728 if (tlv_len != sizeof(u32))
729 goto invalid_tlv_len;
730 pieces->inst_evtlog_size =
731 le32_to_cpup((__le32 *)tlv_data);
732 break;
733 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
734 if (tlv_len != sizeof(u32))
735 goto invalid_tlv_len;
736 pieces->inst_errlog_ptr =
737 le32_to_cpup((__le32 *)tlv_data);
738 break;
739 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
740 if (tlv_len)
741 goto invalid_tlv_len;
742 drv->fw.enhance_sensitivity_table = true;
743 break;
744 case IWL_UCODE_TLV_WOWLAN_INST:
745 set_sec_data(pieces, IWL_UCODE_WOWLAN,
746 IWL_UCODE_SECTION_INST, tlv_data);
747 set_sec_size(pieces, IWL_UCODE_WOWLAN,
748 IWL_UCODE_SECTION_INST, tlv_len);
749 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
750 IWL_UCODE_SECTION_INST,
751 IWLAGN_RTC_INST_LOWER_BOUND);
752 break;
753 case IWL_UCODE_TLV_WOWLAN_DATA:
754 set_sec_data(pieces, IWL_UCODE_WOWLAN,
755 IWL_UCODE_SECTION_DATA, tlv_data);
756 set_sec_size(pieces, IWL_UCODE_WOWLAN,
757 IWL_UCODE_SECTION_DATA, tlv_len);
758 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
759 IWL_UCODE_SECTION_DATA,
760 IWLAGN_RTC_DATA_LOWER_BOUND);
761 break;
762 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
763 if (tlv_len != sizeof(u32))
764 goto invalid_tlv_len;
765 capa->standard_phy_calibration_size =
766 le32_to_cpup((__le32 *)tlv_data);
767 break;
768 case IWL_UCODE_TLV_SEC_RT:
769 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
770 tlv_len);
771 drv->fw.mvm_fw = true;
772 break;
773 case IWL_UCODE_TLV_SEC_INIT:
774 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
775 tlv_len);
776 drv->fw.mvm_fw = true;
777 break;
778 case IWL_UCODE_TLV_SEC_WOWLAN:
779 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
780 tlv_len);
781 drv->fw.mvm_fw = true;
782 break;
783 case IWL_UCODE_TLV_DEF_CALIB:
784 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
785 goto invalid_tlv_len;
786 if (iwl_set_default_calib(drv, tlv_data))
787 goto tlv_error;
788 break;
789 case IWL_UCODE_TLV_PHY_SKU:
790 if (tlv_len != sizeof(u32))
791 goto invalid_tlv_len;
792 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
793 drv->fw.valid_tx_ant = (drv->fw.phy_config &
794 FW_PHY_CFG_TX_CHAIN) >>
795 FW_PHY_CFG_TX_CHAIN_POS;
796 drv->fw.valid_rx_ant = (drv->fw.phy_config &
797 FW_PHY_CFG_RX_CHAIN) >>
798 FW_PHY_CFG_RX_CHAIN_POS;
799 break;
800 case IWL_UCODE_TLV_SECURE_SEC_RT:
801 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
802 tlv_len);
803 drv->fw.mvm_fw = true;
804 break;
805 case IWL_UCODE_TLV_SECURE_SEC_INIT:
806 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
807 tlv_len);
808 drv->fw.mvm_fw = true;
809 break;
810 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
811 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
812 tlv_len);
813 drv->fw.mvm_fw = true;
814 break;
815 case IWL_UCODE_TLV_NUM_OF_CPU:
816 if (tlv_len != sizeof(u32))
817 goto invalid_tlv_len;
818 num_of_cpus =
819 le32_to_cpup((__le32 *)tlv_data);
820
821 if (num_of_cpus == 2) {
822 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
823 true;
824 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
825 true;
826 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
827 true;
828 } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
829 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
830 return -EINVAL;
831 }
832 break;
833 case IWL_UCODE_TLV_CSCHEME:
834 if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
835 goto invalid_tlv_len;
836 break;
837 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
838 if (tlv_len != sizeof(u32))
839 goto invalid_tlv_len;
840 capa->n_scan_channels =
841 le32_to_cpup((__le32 *)tlv_data);
842 break;
843 case IWL_UCODE_TLV_FW_VERSION: {
844 __le32 *ptr = (void *)tlv_data;
845 u32 major, minor;
846 u8 local_comp;
847
848 if (tlv_len != sizeof(u32) * 3)
849 goto invalid_tlv_len;
850
851 major = le32_to_cpup(ptr++);
852 minor = le32_to_cpup(ptr++);
853 local_comp = le32_to_cpup(ptr);
854
855 snprintf(drv->fw.fw_version,
856 sizeof(drv->fw.fw_version), "%u.%u.%u",
857 major, minor, local_comp);
858 break;
859 }
860 case IWL_UCODE_TLV_FW_DBG_DEST: {
861 struct iwl_fw_dbg_dest_tlv *dest = (void *)tlv_data;
862
863 if (pieces->dbg_dest_tlv) {
864 IWL_ERR(drv,
865 "dbg destination ignored, already exists\n");
866 break;
867 }
868
869 pieces->dbg_dest_tlv = dest;
870 IWL_INFO(drv, "Found debug destination: %s\n",
871 get_fw_dbg_mode_string(dest->monitor_mode));
872
873 drv->fw.dbg_dest_reg_num =
874 tlv_len - offsetof(struct iwl_fw_dbg_dest_tlv,
875 reg_ops);
876 drv->fw.dbg_dest_reg_num /=
877 sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]);
878
879 break;
880 }
881 case IWL_UCODE_TLV_FW_DBG_CONF: {
882 struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
883
884 if (!pieces->dbg_dest_tlv) {
885 IWL_ERR(drv,
886 "Ignore dbg config %d - no destination configured\n",
887 conf->id);
888 break;
889 }
890
891 if (conf->id >= ARRAY_SIZE(drv->fw.dbg_conf_tlv)) {
892 IWL_ERR(drv,
893 "Skip unknown configuration: %d\n",
894 conf->id);
895 break;
896 }
897
898 if (pieces->dbg_conf_tlv[conf->id]) {
899 IWL_ERR(drv,
900 "Ignore duplicate dbg config %d\n",
901 conf->id);
902 break;
903 }
904
905 if (conf->usniffer)
906 usniffer_req = true;
907
908 IWL_INFO(drv, "Found debug configuration: %d\n",
909 conf->id);
910
911 pieces->dbg_conf_tlv[conf->id] = conf;
912 pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
913 break;
914 }
915 case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
916 struct iwl_fw_dbg_trigger_tlv *trigger =
917 (void *)tlv_data;
918 u32 trigger_id = le32_to_cpu(trigger->id);
919
920 if (trigger_id >= ARRAY_SIZE(drv->fw.dbg_trigger_tlv)) {
921 IWL_ERR(drv,
922 "Skip unknown trigger: %u\n",
923 trigger->id);
924 break;
925 }
926
927 if (pieces->dbg_trigger_tlv[trigger_id]) {
928 IWL_ERR(drv,
929 "Ignore duplicate dbg trigger %u\n",
930 trigger->id);
931 break;
932 }
933
934 IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
935
936 pieces->dbg_trigger_tlv[trigger_id] = trigger;
937 pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
938 break;
939 }
940 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
941 usniffer_images = true;
942 iwl_store_ucode_sec(pieces, tlv_data,
943 IWL_UCODE_REGULAR_USNIFFER,
944 tlv_len);
945 break;
946 case IWL_UCODE_TLV_SDIO_ADMA_ADDR:
947 if (tlv_len != sizeof(u32))
948 goto invalid_tlv_len;
949 drv->fw.sdio_adma_addr =
950 le32_to_cpup((__le32 *)tlv_data);
951 break;
952 default:
953 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
954 break;
955 }
956 }
957
958 if (usniffer_req && !usniffer_images) {
959 IWL_ERR(drv,
960 "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
961 return -EINVAL;
962 }
963
964 if (len) {
965 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
966 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
967 return -EINVAL;
968 }
969
970 return 0;
971
972 invalid_tlv_len:
973 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
974 tlv_error:
975 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
976
977 return -EINVAL;
978 }
979
iwl_alloc_ucode(struct iwl_drv * drv,struct iwl_firmware_pieces * pieces,enum iwl_ucode_type type)980 static int iwl_alloc_ucode(struct iwl_drv *drv,
981 struct iwl_firmware_pieces *pieces,
982 enum iwl_ucode_type type)
983 {
984 int i;
985 for (i = 0;
986 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
987 i++)
988 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
989 get_sec(pieces, type, i)))
990 return -ENOMEM;
991 return 0;
992 }
993
validate_sec_sizes(struct iwl_drv * drv,struct iwl_firmware_pieces * pieces,const struct iwl_cfg * cfg)994 static int validate_sec_sizes(struct iwl_drv *drv,
995 struct iwl_firmware_pieces *pieces,
996 const struct iwl_cfg *cfg)
997 {
998 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
999 get_sec_size(pieces, IWL_UCODE_REGULAR,
1000 IWL_UCODE_SECTION_INST));
1001 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
1002 get_sec_size(pieces, IWL_UCODE_REGULAR,
1003 IWL_UCODE_SECTION_DATA));
1004 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
1005 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1006 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
1007 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1008
1009 /* Verify that uCode images will fit in card's SRAM. */
1010 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1011 cfg->max_inst_size) {
1012 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
1013 get_sec_size(pieces, IWL_UCODE_REGULAR,
1014 IWL_UCODE_SECTION_INST));
1015 return -1;
1016 }
1017
1018 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1019 cfg->max_data_size) {
1020 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
1021 get_sec_size(pieces, IWL_UCODE_REGULAR,
1022 IWL_UCODE_SECTION_DATA));
1023 return -1;
1024 }
1025
1026 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1027 cfg->max_inst_size) {
1028 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
1029 get_sec_size(pieces, IWL_UCODE_INIT,
1030 IWL_UCODE_SECTION_INST));
1031 return -1;
1032 }
1033
1034 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1035 cfg->max_data_size) {
1036 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
1037 get_sec_size(pieces, IWL_UCODE_REGULAR,
1038 IWL_UCODE_SECTION_DATA));
1039 return -1;
1040 }
1041 return 0;
1042 }
1043
1044 static struct iwl_op_mode *
_iwl_op_mode_start(struct iwl_drv * drv,struct iwlwifi_opmode_table * op)1045 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1046 {
1047 const struct iwl_op_mode_ops *ops = op->ops;
1048 struct dentry *dbgfs_dir = NULL;
1049 struct iwl_op_mode *op_mode = NULL;
1050
1051 #ifdef CONFIG_IWLWIFI_DEBUGFS
1052 drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1053 drv->dbgfs_drv);
1054 if (!drv->dbgfs_op_mode) {
1055 IWL_ERR(drv,
1056 "failed to create opmode debugfs directory\n");
1057 return op_mode;
1058 }
1059 dbgfs_dir = drv->dbgfs_op_mode;
1060 #endif
1061
1062 op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
1063
1064 #ifdef CONFIG_IWLWIFI_DEBUGFS
1065 if (!op_mode) {
1066 debugfs_remove_recursive(drv->dbgfs_op_mode);
1067 drv->dbgfs_op_mode = NULL;
1068 }
1069 #endif
1070
1071 return op_mode;
1072 }
1073
_iwl_op_mode_stop(struct iwl_drv * drv)1074 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1075 {
1076 /* op_mode can be NULL if its start failed */
1077 if (drv->op_mode) {
1078 iwl_op_mode_stop(drv->op_mode);
1079 drv->op_mode = NULL;
1080
1081 #ifdef CONFIG_IWLWIFI_DEBUGFS
1082 debugfs_remove_recursive(drv->dbgfs_op_mode);
1083 drv->dbgfs_op_mode = NULL;
1084 #endif
1085 }
1086 }
1087
1088 /**
1089 * iwl_req_fw_callback - callback when firmware was loaded
1090 *
1091 * If loaded successfully, copies the firmware into buffers
1092 * for the card to fetch (via DMA).
1093 */
iwl_req_fw_callback(const struct firmware * ucode_raw,void * context)1094 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1095 {
1096 struct iwl_drv *drv = context;
1097 struct iwl_fw *fw = &drv->fw;
1098 struct iwl_ucode_header *ucode;
1099 struct iwlwifi_opmode_table *op;
1100 int err;
1101 struct iwl_firmware_pieces *pieces;
1102 const unsigned int api_max = drv->cfg->ucode_api_max;
1103 unsigned int api_ok = drv->cfg->ucode_api_ok;
1104 const unsigned int api_min = drv->cfg->ucode_api_min;
1105 size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1106 u32 api_ver;
1107 int i;
1108 bool load_module = false;
1109
1110 fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1111 fw->ucode_capa.standard_phy_calibration_size =
1112 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1113 fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1114
1115 if (!api_ok)
1116 api_ok = api_max;
1117
1118 pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1119 if (!pieces)
1120 return;
1121
1122 if (!ucode_raw) {
1123 if (drv->fw_index <= api_ok)
1124 IWL_ERR(drv,
1125 "request for firmware file '%s' failed.\n",
1126 drv->firmware_name);
1127 goto try_again;
1128 }
1129
1130 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1131 drv->firmware_name, ucode_raw->size);
1132
1133 /* Make sure that we got at least the API version number */
1134 if (ucode_raw->size < 4) {
1135 IWL_ERR(drv, "File size way too small!\n");
1136 goto try_again;
1137 }
1138
1139 /* Data from ucode file: header followed by uCode images */
1140 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1141
1142 if (ucode->ver)
1143 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1144 else
1145 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1146 &fw->ucode_capa);
1147
1148 if (err)
1149 goto try_again;
1150
1151 if (drv->fw.ucode_capa.api[0] & IWL_UCODE_TLV_API_NEW_VERSION)
1152 api_ver = drv->fw.ucode_ver;
1153 else
1154 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1155
1156 /*
1157 * api_ver should match the api version forming part of the
1158 * firmware filename ... but we don't check for that and only rely
1159 * on the API version read from firmware header from here on forward
1160 */
1161 /* no api version check required for experimental uCode */
1162 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1163 if (api_ver < api_min || api_ver > api_max) {
1164 IWL_ERR(drv,
1165 "Driver unable to support your firmware API. "
1166 "Driver supports v%u, firmware is v%u.\n",
1167 api_max, api_ver);
1168 goto try_again;
1169 }
1170
1171 if (api_ver < api_ok) {
1172 if (api_ok != api_max)
1173 IWL_ERR(drv, "Firmware has old API version, "
1174 "expected v%u through v%u, got v%u.\n",
1175 api_ok, api_max, api_ver);
1176 else
1177 IWL_ERR(drv, "Firmware has old API version, "
1178 "expected v%u, got v%u.\n",
1179 api_max, api_ver);
1180 IWL_ERR(drv, "New firmware can be obtained from "
1181 "http://www.intellinuxwireless.org/.\n");
1182 }
1183 }
1184
1185 /*
1186 * In mvm uCode there is no difference between data and instructions
1187 * sections.
1188 */
1189 if (!fw->mvm_fw && validate_sec_sizes(drv, pieces, drv->cfg))
1190 goto try_again;
1191
1192 /* Allocate ucode buffers for card's bus-master loading ... */
1193
1194 /* Runtime instructions and 2 copies of data:
1195 * 1) unmodified from disk
1196 * 2) backup cache for save/restore during power-downs */
1197 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1198 if (iwl_alloc_ucode(drv, pieces, i))
1199 goto out_free_fw;
1200
1201 if (pieces->dbg_dest_tlv) {
1202 drv->fw.dbg_dest_tlv =
1203 kmemdup(pieces->dbg_dest_tlv,
1204 sizeof(*pieces->dbg_dest_tlv) +
1205 sizeof(pieces->dbg_dest_tlv->reg_ops[0]) *
1206 drv->fw.dbg_dest_reg_num, GFP_KERNEL);
1207
1208 if (!drv->fw.dbg_dest_tlv)
1209 goto out_free_fw;
1210 }
1211
1212 for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++) {
1213 if (pieces->dbg_conf_tlv[i]) {
1214 drv->fw.dbg_conf_tlv_len[i] =
1215 pieces->dbg_conf_tlv_len[i];
1216 drv->fw.dbg_conf_tlv[i] =
1217 kmemdup(pieces->dbg_conf_tlv[i],
1218 drv->fw.dbg_conf_tlv_len[i],
1219 GFP_KERNEL);
1220 if (!drv->fw.dbg_conf_tlv[i])
1221 goto out_free_fw;
1222 }
1223 }
1224
1225 memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1226
1227 trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1228 sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1229 trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1230 trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1231 sizeof(struct iwl_fw_dbg_trigger_cmd);
1232 trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1233 sizeof(struct iwl_fw_dbg_trigger_mlme);
1234 trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1235 sizeof(struct iwl_fw_dbg_trigger_stats);
1236 trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1237 sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1238 trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1239 sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1240 trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1241 sizeof(struct iwl_fw_dbg_trigger_time_event);
1242
1243 for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++) {
1244 if (pieces->dbg_trigger_tlv[i]) {
1245 /*
1246 * If the trigger isn't long enough, WARN and exit.
1247 * Someone is trying to debug something and he won't
1248 * be able to catch the bug he is trying to chase.
1249 * We'd better be noisy to be sure he knows what's
1250 * going on.
1251 */
1252 if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1253 (trigger_tlv_sz[i] +
1254 sizeof(struct iwl_fw_dbg_trigger_tlv))))
1255 goto out_free_fw;
1256 drv->fw.dbg_trigger_tlv_len[i] =
1257 pieces->dbg_trigger_tlv_len[i];
1258 drv->fw.dbg_trigger_tlv[i] =
1259 kmemdup(pieces->dbg_trigger_tlv[i],
1260 drv->fw.dbg_trigger_tlv_len[i],
1261 GFP_KERNEL);
1262 if (!drv->fw.dbg_trigger_tlv[i])
1263 goto out_free_fw;
1264 }
1265 }
1266
1267 /* Now that we can no longer fail, copy information */
1268
1269 /*
1270 * The (size - 16) / 12 formula is based on the information recorded
1271 * for each event, which is of mode 1 (including timestamp) for all
1272 * new microcodes that include this information.
1273 */
1274 fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1275 if (pieces->init_evtlog_size)
1276 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1277 else
1278 fw->init_evtlog_size =
1279 drv->cfg->base_params->max_event_log_size;
1280 fw->init_errlog_ptr = pieces->init_errlog_ptr;
1281 fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1282 if (pieces->inst_evtlog_size)
1283 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1284 else
1285 fw->inst_evtlog_size =
1286 drv->cfg->base_params->max_event_log_size;
1287 fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1288
1289 /*
1290 * figure out the offset of chain noise reset and gain commands
1291 * base on the size of standard phy calibration commands table size
1292 */
1293 if (fw->ucode_capa.standard_phy_calibration_size >
1294 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1295 fw->ucode_capa.standard_phy_calibration_size =
1296 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1297
1298 /* We have our copies now, allow OS release its copies */
1299 release_firmware(ucode_raw);
1300
1301 mutex_lock(&iwlwifi_opmode_table_mtx);
1302 if (fw->mvm_fw)
1303 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1304 else
1305 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1306
1307 IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1308 drv->fw.fw_version, op->name);
1309
1310 /* add this device to the list of devices using this op_mode */
1311 list_add_tail(&drv->list, &op->drv);
1312
1313 if (op->ops) {
1314 drv->op_mode = _iwl_op_mode_start(drv, op);
1315
1316 if (!drv->op_mode) {
1317 mutex_unlock(&iwlwifi_opmode_table_mtx);
1318 goto out_unbind;
1319 }
1320 } else {
1321 load_module = true;
1322 }
1323 mutex_unlock(&iwlwifi_opmode_table_mtx);
1324
1325 /*
1326 * Complete the firmware request last so that
1327 * a driver unbind (stop) doesn't run while we
1328 * are doing the start() above.
1329 */
1330 complete(&drv->request_firmware_complete);
1331
1332 /*
1333 * Load the module last so we don't block anything
1334 * else from proceeding if the module fails to load
1335 * or hangs loading.
1336 */
1337 if (load_module) {
1338 err = request_module("%s", op->name);
1339 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1340 if (err)
1341 IWL_ERR(drv,
1342 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1343 op->name, err);
1344 #endif
1345 }
1346 kfree(pieces);
1347 return;
1348
1349 try_again:
1350 /* try next, if any */
1351 release_firmware(ucode_raw);
1352 if (iwl_request_firmware(drv, false))
1353 goto out_unbind;
1354 kfree(pieces);
1355 return;
1356
1357 out_free_fw:
1358 IWL_ERR(drv, "failed to allocate pci memory\n");
1359 iwl_dealloc_ucode(drv);
1360 release_firmware(ucode_raw);
1361 out_unbind:
1362 kfree(pieces);
1363 complete(&drv->request_firmware_complete);
1364 device_release_driver(drv->trans->dev);
1365 }
1366
iwl_drv_start(struct iwl_trans * trans,const struct iwl_cfg * cfg)1367 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1368 const struct iwl_cfg *cfg)
1369 {
1370 struct iwl_drv *drv;
1371 int ret;
1372
1373 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1374 if (!drv) {
1375 ret = -ENOMEM;
1376 goto err;
1377 }
1378
1379 drv->trans = trans;
1380 drv->dev = trans->dev;
1381 drv->cfg = cfg;
1382
1383 init_completion(&drv->request_firmware_complete);
1384 INIT_LIST_HEAD(&drv->list);
1385
1386 #ifdef CONFIG_IWLWIFI_DEBUGFS
1387 /* Create the device debugfs entries. */
1388 drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1389 iwl_dbgfs_root);
1390
1391 if (!drv->dbgfs_drv) {
1392 IWL_ERR(drv, "failed to create debugfs directory\n");
1393 ret = -ENOMEM;
1394 goto err_free_drv;
1395 }
1396
1397 /* Create transport layer debugfs dir */
1398 drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1399
1400 if (!drv->trans->dbgfs_dir) {
1401 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1402 ret = -ENOMEM;
1403 goto err_free_dbgfs;
1404 }
1405 #endif
1406
1407 ret = iwl_request_firmware(drv, true);
1408 if (ret) {
1409 IWL_ERR(trans, "Couldn't request the fw\n");
1410 goto err_fw;
1411 }
1412
1413 return drv;
1414
1415 err_fw:
1416 #ifdef CONFIG_IWLWIFI_DEBUGFS
1417 err_free_dbgfs:
1418 debugfs_remove_recursive(drv->dbgfs_drv);
1419 err_free_drv:
1420 #endif
1421 kfree(drv);
1422 err:
1423 return ERR_PTR(ret);
1424 }
1425
iwl_drv_stop(struct iwl_drv * drv)1426 void iwl_drv_stop(struct iwl_drv *drv)
1427 {
1428 wait_for_completion(&drv->request_firmware_complete);
1429
1430 _iwl_op_mode_stop(drv);
1431
1432 iwl_dealloc_ucode(drv);
1433
1434 mutex_lock(&iwlwifi_opmode_table_mtx);
1435 /*
1436 * List is empty (this item wasn't added)
1437 * when firmware loading failed -- in that
1438 * case we can't remove it from any list.
1439 */
1440 if (!list_empty(&drv->list))
1441 list_del(&drv->list);
1442 mutex_unlock(&iwlwifi_opmode_table_mtx);
1443
1444 #ifdef CONFIG_IWLWIFI_DEBUGFS
1445 debugfs_remove_recursive(drv->dbgfs_drv);
1446 #endif
1447
1448 kfree(drv);
1449 }
1450
1451
1452 /* shared module parameters */
1453 struct iwl_mod_params iwlwifi_mod_params = {
1454 .restart_fw = true,
1455 .bt_coex_active = true,
1456 .power_level = IWL_POWER_INDEX_1,
1457 .d0i3_disable = true,
1458 #ifndef CONFIG_IWLWIFI_UAPSD
1459 .uapsd_disable = true,
1460 #endif /* CONFIG_IWLWIFI_UAPSD */
1461 /* the rest are 0 by default */
1462 };
1463 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1464
iwl_opmode_register(const char * name,const struct iwl_op_mode_ops * ops)1465 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1466 {
1467 int i;
1468 struct iwl_drv *drv;
1469 struct iwlwifi_opmode_table *op;
1470
1471 mutex_lock(&iwlwifi_opmode_table_mtx);
1472 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1473 op = &iwlwifi_opmode_table[i];
1474 if (strcmp(op->name, name))
1475 continue;
1476 op->ops = ops;
1477 /* TODO: need to handle exceptional case */
1478 list_for_each_entry(drv, &op->drv, list)
1479 drv->op_mode = _iwl_op_mode_start(drv, op);
1480
1481 mutex_unlock(&iwlwifi_opmode_table_mtx);
1482 return 0;
1483 }
1484 mutex_unlock(&iwlwifi_opmode_table_mtx);
1485 return -EIO;
1486 }
1487 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1488
iwl_opmode_deregister(const char * name)1489 void iwl_opmode_deregister(const char *name)
1490 {
1491 int i;
1492 struct iwl_drv *drv;
1493
1494 mutex_lock(&iwlwifi_opmode_table_mtx);
1495 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1496 if (strcmp(iwlwifi_opmode_table[i].name, name))
1497 continue;
1498 iwlwifi_opmode_table[i].ops = NULL;
1499
1500 /* call the stop routine for all devices */
1501 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1502 _iwl_op_mode_stop(drv);
1503
1504 mutex_unlock(&iwlwifi_opmode_table_mtx);
1505 return;
1506 }
1507 mutex_unlock(&iwlwifi_opmode_table_mtx);
1508 }
1509 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1510
iwl_drv_init(void)1511 static int __init iwl_drv_init(void)
1512 {
1513 int i;
1514
1515 mutex_init(&iwlwifi_opmode_table_mtx);
1516
1517 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1518 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1519
1520 pr_info(DRV_DESCRIPTION "\n");
1521 pr_info(DRV_COPYRIGHT "\n");
1522
1523 #ifdef CONFIG_IWLWIFI_DEBUGFS
1524 /* Create the root of iwlwifi debugfs subsystem. */
1525 iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1526
1527 if (!iwl_dbgfs_root)
1528 return -EFAULT;
1529 #endif
1530
1531 return iwl_pci_register_driver();
1532 }
1533 module_init(iwl_drv_init);
1534
iwl_drv_exit(void)1535 static void __exit iwl_drv_exit(void)
1536 {
1537 iwl_pci_unregister_driver();
1538
1539 #ifdef CONFIG_IWLWIFI_DEBUGFS
1540 debugfs_remove_recursive(iwl_dbgfs_root);
1541 #endif
1542 }
1543 module_exit(iwl_drv_exit);
1544
1545 #ifdef CONFIG_IWLWIFI_DEBUG
1546 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1547 S_IRUGO | S_IWUSR);
1548 MODULE_PARM_DESC(debug, "debug output mask");
1549 #endif
1550
1551 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1552 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1553 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1554 MODULE_PARM_DESC(11n_disable,
1555 "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1556 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1557 int, S_IRUGO);
1558 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1559 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1560 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1561
1562 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1563 int, S_IRUGO);
1564 MODULE_PARM_DESC(antenna_coupling,
1565 "specify antenna coupling in dB (default: 0 dB)");
1566
1567 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1568 MODULE_PARM_DESC(nvm_file, "NVM file name");
1569
1570 module_param_named(d0i3_disable, iwlwifi_mod_params.d0i3_disable,
1571 bool, S_IRUGO);
1572 MODULE_PARM_DESC(d0i3_disable, "disable d0i3 functionality (default: Y)");
1573
1574 module_param_named(lar_disable, iwlwifi_mod_params.lar_disable,
1575 bool, S_IRUGO);
1576 MODULE_PARM_DESC(lar_disable, "disable LAR functionality (default: N)");
1577
1578 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1579 bool, S_IRUGO | S_IWUSR);
1580 #ifdef CONFIG_IWLWIFI_UAPSD
1581 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1582 #else
1583 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1584 #endif
1585
1586 /*
1587 * set bt_coex_active to true, uCode will do kill/defer
1588 * every time the priority line is asserted (BT is sending signals on the
1589 * priority line in the PCIx).
1590 * set bt_coex_active to false, uCode will ignore the BT activity and
1591 * perform the normal operation
1592 *
1593 * User might experience transmit issue on some platform due to WiFi/BT
1594 * co-exist problem. The possible behaviors are:
1595 * Able to scan and finding all the available AP
1596 * Not able to associate with any AP
1597 * On those platforms, WiFi communication can be restored by set
1598 * "bt_coex_active" module parameter to "false"
1599 *
1600 * default: bt_coex_active = true (BT_COEX_ENABLE)
1601 */
1602 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1603 bool, S_IRUGO);
1604 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1605
1606 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1607 MODULE_PARM_DESC(led_mode, "0=system default, "
1608 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1609
1610 module_param_named(power_save, iwlwifi_mod_params.power_save,
1611 bool, S_IRUGO);
1612 MODULE_PARM_DESC(power_save,
1613 "enable WiFi power management (default: disable)");
1614
1615 module_param_named(power_level, iwlwifi_mod_params.power_level,
1616 int, S_IRUGO);
1617 MODULE_PARM_DESC(power_level,
1618 "default power save level (range from 1 - 5, default: 1)");
1619
1620 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1621 MODULE_PARM_DESC(fw_monitor,
1622 "firmware monitor - to debug FW (default: false - needs lots of memory)");
1623