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mm/zsmalloc: allocate exactly size of struct zs_pool
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / iwl-drv.c
blob38de1513e4dedd5588367e44d2877ceed39234b6
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/completion.h>
66 #include <linux/dma-mapping.h>
67 #include <linux/firmware.h>
68 #include <linux/module.h>
69 #include <linux/vmalloc.h>
70
71 #include "iwl-drv.h"
72 #include "iwl-csr.h"
73 #include "iwl-debug.h"
74 #include "iwl-trans.h"
75 #include "iwl-op-mode.h"
76 #include "iwl-agn-hw.h"
77 #include "iwl-fw.h"
78 #include "iwl-config.h"
79 #include "iwl-modparams.h"
80
81 /******************************************************************************
82 *
83 * module boiler plate
84 *
85 ******************************************************************************/
86
87 /*
88 * module name, copyright, version, etc.
89 */
90 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Linux"
91
92 #ifdef CONFIG_IWLWIFI_DEBUG
93 #define VD "d"
94 #else
95 #define VD
96 #endif
97
98 #define DRV_VERSION IWLWIFI_VERSION VD
99
100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
101 MODULE_VERSION(DRV_VERSION);
102 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
103 MODULE_LICENSE("GPL");
104
105 #ifdef CONFIG_IWLWIFI_DEBUGFS
106 static struct dentry *iwl_dbgfs_root;
107 #endif
108
109 /**
110 * struct iwl_drv - drv common data
111 * @list: list of drv structures using this opmode
112 * @fw: the iwl_fw structure
113 * @op_mode: the running op_mode
114 * @trans: transport layer
115 * @dev: for debug prints only
116 * @cfg: configuration struct
117 * @fw_index: firmware revision to try loading
118 * @firmware_name: composite filename of ucode file to load
119 * @request_firmware_complete: the firmware has been obtained from user space
120 */
121 struct iwl_drv {
122 struct list_head list;
123 struct iwl_fw fw;
124
125 struct iwl_op_mode *op_mode;
126 struct iwl_trans *trans;
127 struct device *dev;
128 const struct iwl_cfg *cfg;
129
130 int fw_index; /* firmware we're trying to load */
131 char firmware_name[32]; /* name of firmware file to load */
132
133 struct completion request_firmware_complete;
134
135 #ifdef CONFIG_IWLWIFI_DEBUGFS
136 struct dentry *dbgfs_drv;
137 struct dentry *dbgfs_trans;
138 struct dentry *dbgfs_op_mode;
139 #endif
140 };
141
142 enum {
143 DVM_OP_MODE = 0,
144 MVM_OP_MODE = 1,
145 };
146
147 /* Protects the table contents, i.e. the ops pointer & drv list */
148 static struct mutex iwlwifi_opmode_table_mtx;
149 static struct iwlwifi_opmode_table {
150 const char *name; /* name: iwldvm, iwlmvm, etc */
151 const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */
152 struct list_head drv; /* list of devices using this op_mode */
153 } iwlwifi_opmode_table[] = { /* ops set when driver is initialized */
154 [DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
155 [MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
156 };
157
158 #define IWL_DEFAULT_SCAN_CHANNELS 40
159
160 /*
161 * struct fw_sec: Just for the image parsing proccess.
162 * For the fw storage we are using struct fw_desc.
163 */
164 struct fw_sec {
165 const void *data; /* the sec data */
166 size_t size; /* section size */
167 u32 offset; /* offset of writing in the device */
168 };
169
170 static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
171 {
172 vfree(desc->data);
173 desc->data = NULL;
174 desc->len = 0;
175 }
176
177 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
178 {
179 int i;
180 for (i = 0; i < IWL_UCODE_SECTION_MAX; i++)
181 iwl_free_fw_desc(drv, &img->sec[i]);
182 }
183
184 static void iwl_dealloc_ucode(struct iwl_drv *drv)
185 {
186 int i;
187
188 kfree(drv->fw.dbg_dest_tlv);
189 for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++)
190 kfree(drv->fw.dbg_conf_tlv[i]);
191
192 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
193 iwl_free_fw_img(drv, drv->fw.img + i);
194 }
195
196 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
197 struct fw_sec *sec)
198 {
199 void *data;
200
201 desc->data = NULL;
202
203 if (!sec || !sec->size)
204 return -EINVAL;
205
206 data = vmalloc(sec->size);
207 if (!data)
208 return -ENOMEM;
209
210 desc->len = sec->size;
211 desc->offset = sec->offset;
212 memcpy(data, sec->data, desc->len);
213 desc->data = data;
214
215 return 0;
216 }
217
218 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
219 void *context);
220
221 #define UCODE_EXPERIMENTAL_INDEX 100
222 #define UCODE_EXPERIMENTAL_TAG "exp"
223
224 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
225 {
226 const char *name_pre = drv->cfg->fw_name_pre;
227 char tag[8];
228
229 if (first) {
230 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
231 drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
232 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
233 } else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
234 #endif
235 drv->fw_index = drv->cfg->ucode_api_max;
236 sprintf(tag, "%d", drv->fw_index);
237 } else {
238 drv->fw_index--;
239 sprintf(tag, "%d", drv->fw_index);
240 }
241
242 if (drv->fw_index < drv->cfg->ucode_api_min) {
243 IWL_ERR(drv, "no suitable firmware found!\n");
244 return -ENOENT;
245 }
246
247 snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
248 name_pre, tag);
249
250 /*
251 * Starting 8000B - FW name format has changed. This overwrites the
252 * previous name and uses the new format.
253 *
254 * TODO:
255 * Once there is only one supported step for 8000 family - delete this!
256 */
257 if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
258 char rev_step[2] = {
259 'A' + CSR_HW_REV_STEP(drv->trans->hw_rev), 0
260 };
261
262 /* A-step doesn't have an indication */
263 if (CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_A_STEP)
264 rev_step[0] = 0;
265
266 /*
267 * If hw_rev wasn't set yet - default as B-step. If it IS A-step
268 * we'll reload that FW later instead.
269 */
270 if (drv->trans->hw_rev == 0)
271 rev_step[0] = 'B';
272
273 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
274 "%s%s-%s.ucode", name_pre, rev_step, tag);
275 }
276
277 IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
278 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
279 ? "EXPERIMENTAL " : "",
280 drv->firmware_name);
281
282 return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
283 drv->trans->dev,
284 GFP_KERNEL, drv, iwl_req_fw_callback);
285 }
286
287 struct fw_img_parsing {
288 struct fw_sec sec[IWL_UCODE_SECTION_MAX];
289 int sec_counter;
290 };
291
292 /*
293 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
294 */
295 struct fw_sec_parsing {
296 __le32 offset;
297 const u8 data[];
298 } __packed;
299
300 /**
301 * struct iwl_tlv_calib_data - parse the default calib data from TLV
302 *
303 * @ucode_type: the uCode to which the following default calib relates.
304 * @calib: default calibrations.
305 */
306 struct iwl_tlv_calib_data {
307 __le32 ucode_type;
308 struct iwl_tlv_calib_ctrl calib;
309 } __packed;
310
311 struct iwl_firmware_pieces {
312 struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
313
314 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
315 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
316
317 /* FW debug data parsed for driver usage */
318 struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
319 struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_MAX];
320 size_t dbg_conf_tlv_len[FW_DBG_MAX];
321 };
322
323 /*
324 * These functions are just to extract uCode section data from the pieces
325 * structure.
326 */
327 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
328 enum iwl_ucode_type type,
329 int sec)
330 {
331 return &pieces->img[type].sec[sec];
332 }
333
334 static void set_sec_data(struct iwl_firmware_pieces *pieces,
335 enum iwl_ucode_type type,
336 int sec,
337 const void *data)
338 {
339 pieces->img[type].sec[sec].data = data;
340 }
341
342 static void set_sec_size(struct iwl_firmware_pieces *pieces,
343 enum iwl_ucode_type type,
344 int sec,
345 size_t size)
346 {
347 pieces->img[type].sec[sec].size = size;
348 }
349
350 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
351 enum iwl_ucode_type type,
352 int sec)
353 {
354 return pieces->img[type].sec[sec].size;
355 }
356
357 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
358 enum iwl_ucode_type type,
359 int sec,
360 u32 offset)
361 {
362 pieces->img[type].sec[sec].offset = offset;
363 }
364
365 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
366 {
367 int i, j;
368 struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
369 struct iwl_fw_cipher_scheme *fwcs;
370 struct ieee80211_cipher_scheme *cs;
371 u32 cipher;
372
373 if (len < sizeof(*l) ||
374 len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
375 return -EINVAL;
376
377 for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
378 fwcs = &l->cs[j];
379 cipher = le32_to_cpu(fwcs->cipher);
380
381 /* we skip schemes with zero cipher suite selector */
382 if (!cipher)
383 continue;
384
385 cs = &fw->cs[j++];
386 cs->cipher = cipher;
387 cs->iftype = BIT(NL80211_IFTYPE_STATION);
388 cs->hdr_len = fwcs->hdr_len;
389 cs->pn_len = fwcs->pn_len;
390 cs->pn_off = fwcs->pn_off;
391 cs->key_idx_off = fwcs->key_idx_off;
392 cs->key_idx_mask = fwcs->key_idx_mask;
393 cs->key_idx_shift = fwcs->key_idx_shift;
394 cs->mic_len = fwcs->mic_len;
395 }
396
397 return 0;
398 }
399
400 /*
401 * Gets uCode section from tlv.
402 */
403 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
404 const void *data, enum iwl_ucode_type type,
405 int size)
406 {
407 struct fw_img_parsing *img;
408 struct fw_sec *sec;
409 struct fw_sec_parsing *sec_parse;
410
411 if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
412 return -1;
413
414 sec_parse = (struct fw_sec_parsing *)data;
415
416 img = &pieces->img[type];
417 sec = &img->sec[img->sec_counter];
418
419 sec->offset = le32_to_cpu(sec_parse->offset);
420 sec->data = sec_parse->data;
421 sec->size = size - sizeof(sec_parse->offset);
422
423 ++img->sec_counter;
424
425 return 0;
426 }
427
428 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
429 {
430 struct iwl_tlv_calib_data *def_calib =
431 (struct iwl_tlv_calib_data *)data;
432 u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
433 if (ucode_type >= IWL_UCODE_TYPE_MAX) {
434 IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
435 ucode_type);
436 return -EINVAL;
437 }
438 drv->fw.default_calib[ucode_type].flow_trigger =
439 def_calib->calib.flow_trigger;
440 drv->fw.default_calib[ucode_type].event_trigger =
441 def_calib->calib.event_trigger;
442
443 return 0;
444 }
445
446 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
447 struct iwl_ucode_capabilities *capa)
448 {
449 const struct iwl_ucode_api *ucode_api = (void *)data;
450 u32 api_index = le32_to_cpu(ucode_api->api_index);
451
452 if (api_index >= IWL_API_ARRAY_SIZE) {
453 IWL_ERR(drv, "api_index larger than supported by driver\n");
454 return -EINVAL;
455 }
456
457 capa->api[api_index] = le32_to_cpu(ucode_api->api_flags);
458
459 return 0;
460 }
461
462 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
463 struct iwl_ucode_capabilities *capa)
464 {
465 const struct iwl_ucode_capa *ucode_capa = (void *)data;
466 u32 api_index = le32_to_cpu(ucode_capa->api_index);
467
468 if (api_index >= IWL_CAPABILITIES_ARRAY_SIZE) {
469 IWL_ERR(drv, "api_index larger than supported by driver\n");
470 return -EINVAL;
471 }
472
473 capa->capa[api_index] = le32_to_cpu(ucode_capa->api_capa);
474
475 return 0;
476 }
477
478 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
479 const struct firmware *ucode_raw,
480 struct iwl_firmware_pieces *pieces)
481 {
482 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
483 u32 api_ver, hdr_size, build;
484 char buildstr[25];
485 const u8 *src;
486
487 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
488 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
489
490 switch (api_ver) {
491 default:
492 hdr_size = 28;
493 if (ucode_raw->size < hdr_size) {
494 IWL_ERR(drv, "File size too small!\n");
495 return -EINVAL;
496 }
497 build = le32_to_cpu(ucode->u.v2.build);
498 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
499 le32_to_cpu(ucode->u.v2.inst_size));
500 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
501 le32_to_cpu(ucode->u.v2.data_size));
502 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
503 le32_to_cpu(ucode->u.v2.init_size));
504 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
505 le32_to_cpu(ucode->u.v2.init_data_size));
506 src = ucode->u.v2.data;
507 break;
508 case 0:
509 case 1:
510 case 2:
511 hdr_size = 24;
512 if (ucode_raw->size < hdr_size) {
513 IWL_ERR(drv, "File size too small!\n");
514 return -EINVAL;
515 }
516 build = 0;
517 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
518 le32_to_cpu(ucode->u.v1.inst_size));
519 set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
520 le32_to_cpu(ucode->u.v1.data_size));
521 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
522 le32_to_cpu(ucode->u.v1.init_size));
523 set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
524 le32_to_cpu(ucode->u.v1.init_data_size));
525 src = ucode->u.v1.data;
526 break;
527 }
528
529 if (build)
530 sprintf(buildstr, " build %u%s", build,
531 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
532 ? " (EXP)" : "");
533 else
534 buildstr[0] = '\0';
535
536 snprintf(drv->fw.fw_version,
537 sizeof(drv->fw.fw_version),
538 "%u.%u.%u.%u%s",
539 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
540 IWL_UCODE_MINOR(drv->fw.ucode_ver),
541 IWL_UCODE_API(drv->fw.ucode_ver),
542 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
543 buildstr);
544
545 /* Verify size of file vs. image size info in file's header */
546
547 if (ucode_raw->size != hdr_size +
548 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
549 get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
550 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
551 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
552
553 IWL_ERR(drv,
554 "uCode file size %d does not match expected size\n",
555 (int)ucode_raw->size);
556 return -EINVAL;
557 }
558
559
560 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
561 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
562 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
563 IWLAGN_RTC_INST_LOWER_BOUND);
564 set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
565 src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
566 set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
567 IWLAGN_RTC_DATA_LOWER_BOUND);
568 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
569 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
570 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
571 IWLAGN_RTC_INST_LOWER_BOUND);
572 set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
573 src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
574 set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
575 IWLAGN_RTC_DATA_LOWER_BOUND);
576 return 0;
577 }
578
579 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
580 const struct firmware *ucode_raw,
581 struct iwl_firmware_pieces *pieces,
582 struct iwl_ucode_capabilities *capa)
583 {
584 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
585 struct iwl_ucode_tlv *tlv;
586 size_t len = ucode_raw->size;
587 const u8 *data;
588 u32 tlv_len;
589 enum iwl_ucode_tlv_type tlv_type;
590 const u8 *tlv_data;
591 char buildstr[25];
592 u32 build;
593 int num_of_cpus;
594 bool usniffer_images = false;
595 bool usniffer_req = false;
596
597 if (len < sizeof(*ucode)) {
598 IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
599 return -EINVAL;
600 }
601
602 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
603 IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
604 le32_to_cpu(ucode->magic));
605 return -EINVAL;
606 }
607
608 drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
609 memcpy(drv->fw.human_readable, ucode->human_readable,
610 sizeof(drv->fw.human_readable));
611 build = le32_to_cpu(ucode->build);
612
613 if (build)
614 sprintf(buildstr, " build %u%s", build,
615 (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
616 ? " (EXP)" : "");
617 else
618 buildstr[0] = '\0';
619
620 snprintf(drv->fw.fw_version,
621 sizeof(drv->fw.fw_version),
622 "%u.%u.%u.%u%s",
623 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
624 IWL_UCODE_MINOR(drv->fw.ucode_ver),
625 IWL_UCODE_API(drv->fw.ucode_ver),
626 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
627 buildstr);
628
629 data = ucode->data;
630
631 len -= sizeof(*ucode);
632
633 while (len >= sizeof(*tlv)) {
634 len -= sizeof(*tlv);
635 tlv = (void *)data;
636
637 tlv_len = le32_to_cpu(tlv->length);
638 tlv_type = le32_to_cpu(tlv->type);
639 tlv_data = tlv->data;
640
641 if (len < tlv_len) {
642 IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
643 len, tlv_len);
644 return -EINVAL;
645 }
646 len -= ALIGN(tlv_len, 4);
647 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
648
649 switch (tlv_type) {
650 case IWL_UCODE_TLV_INST:
651 set_sec_data(pieces, IWL_UCODE_REGULAR,
652 IWL_UCODE_SECTION_INST, tlv_data);
653 set_sec_size(pieces, IWL_UCODE_REGULAR,
654 IWL_UCODE_SECTION_INST, tlv_len);
655 set_sec_offset(pieces, IWL_UCODE_REGULAR,
656 IWL_UCODE_SECTION_INST,
657 IWLAGN_RTC_INST_LOWER_BOUND);
658 break;
659 case IWL_UCODE_TLV_DATA:
660 set_sec_data(pieces, IWL_UCODE_REGULAR,
661 IWL_UCODE_SECTION_DATA, tlv_data);
662 set_sec_size(pieces, IWL_UCODE_REGULAR,
663 IWL_UCODE_SECTION_DATA, tlv_len);
664 set_sec_offset(pieces, IWL_UCODE_REGULAR,
665 IWL_UCODE_SECTION_DATA,
666 IWLAGN_RTC_DATA_LOWER_BOUND);
667 break;
668 case IWL_UCODE_TLV_INIT:
669 set_sec_data(pieces, IWL_UCODE_INIT,
670 IWL_UCODE_SECTION_INST, tlv_data);
671 set_sec_size(pieces, IWL_UCODE_INIT,
672 IWL_UCODE_SECTION_INST, tlv_len);
673 set_sec_offset(pieces, IWL_UCODE_INIT,
674 IWL_UCODE_SECTION_INST,
675 IWLAGN_RTC_INST_LOWER_BOUND);
676 break;
677 case IWL_UCODE_TLV_INIT_DATA:
678 set_sec_data(pieces, IWL_UCODE_INIT,
679 IWL_UCODE_SECTION_DATA, tlv_data);
680 set_sec_size(pieces, IWL_UCODE_INIT,
681 IWL_UCODE_SECTION_DATA, tlv_len);
682 set_sec_offset(pieces, IWL_UCODE_INIT,
683 IWL_UCODE_SECTION_DATA,
684 IWLAGN_RTC_DATA_LOWER_BOUND);
685 break;
686 case IWL_UCODE_TLV_BOOT:
687 IWL_ERR(drv, "Found unexpected BOOT ucode\n");
688 break;
689 case IWL_UCODE_TLV_PROBE_MAX_LEN:
690 if (tlv_len != sizeof(u32))
691 goto invalid_tlv_len;
692 capa->max_probe_length =
693 le32_to_cpup((__le32 *)tlv_data);
694 break;
695 case IWL_UCODE_TLV_PAN:
696 if (tlv_len)
697 goto invalid_tlv_len;
698 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
699 break;
700 case IWL_UCODE_TLV_FLAGS:
701 /* must be at least one u32 */
702 if (tlv_len < sizeof(u32))
703 goto invalid_tlv_len;
704 /* and a proper number of u32s */
705 if (tlv_len % sizeof(u32))
706 goto invalid_tlv_len;
707 /*
708 * This driver only reads the first u32 as
709 * right now no more features are defined,
710 * if that changes then either the driver
711 * will not work with the new firmware, or
712 * it'll not take advantage of new features.
713 */
714 capa->flags = le32_to_cpup((__le32 *)tlv_data);
715 break;
716 case IWL_UCODE_TLV_API_CHANGES_SET:
717 if (tlv_len != sizeof(struct iwl_ucode_api))
718 goto invalid_tlv_len;
719 if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
720 goto tlv_error;
721 break;
722 case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
723 if (tlv_len != sizeof(struct iwl_ucode_capa))
724 goto invalid_tlv_len;
725 if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
726 goto tlv_error;
727 break;
728 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
729 if (tlv_len != sizeof(u32))
730 goto invalid_tlv_len;
731 pieces->init_evtlog_ptr =
732 le32_to_cpup((__le32 *)tlv_data);
733 break;
734 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
735 if (tlv_len != sizeof(u32))
736 goto invalid_tlv_len;
737 pieces->init_evtlog_size =
738 le32_to_cpup((__le32 *)tlv_data);
739 break;
740 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
741 if (tlv_len != sizeof(u32))
742 goto invalid_tlv_len;
743 pieces->init_errlog_ptr =
744 le32_to_cpup((__le32 *)tlv_data);
745 break;
746 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
747 if (tlv_len != sizeof(u32))
748 goto invalid_tlv_len;
749 pieces->inst_evtlog_ptr =
750 le32_to_cpup((__le32 *)tlv_data);
751 break;
752 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
753 if (tlv_len != sizeof(u32))
754 goto invalid_tlv_len;
755 pieces->inst_evtlog_size =
756 le32_to_cpup((__le32 *)tlv_data);
757 break;
758 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
759 if (tlv_len != sizeof(u32))
760 goto invalid_tlv_len;
761 pieces->inst_errlog_ptr =
762 le32_to_cpup((__le32 *)tlv_data);
763 break;
764 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
765 if (tlv_len)
766 goto invalid_tlv_len;
767 drv->fw.enhance_sensitivity_table = true;
768 break;
769 case IWL_UCODE_TLV_WOWLAN_INST:
770 set_sec_data(pieces, IWL_UCODE_WOWLAN,
771 IWL_UCODE_SECTION_INST, tlv_data);
772 set_sec_size(pieces, IWL_UCODE_WOWLAN,
773 IWL_UCODE_SECTION_INST, tlv_len);
774 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
775 IWL_UCODE_SECTION_INST,
776 IWLAGN_RTC_INST_LOWER_BOUND);
777 break;
778 case IWL_UCODE_TLV_WOWLAN_DATA:
779 set_sec_data(pieces, IWL_UCODE_WOWLAN,
780 IWL_UCODE_SECTION_DATA, tlv_data);
781 set_sec_size(pieces, IWL_UCODE_WOWLAN,
782 IWL_UCODE_SECTION_DATA, tlv_len);
783 set_sec_offset(pieces, IWL_UCODE_WOWLAN,
784 IWL_UCODE_SECTION_DATA,
785 IWLAGN_RTC_DATA_LOWER_BOUND);
786 break;
787 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
788 if (tlv_len != sizeof(u32))
789 goto invalid_tlv_len;
790 capa->standard_phy_calibration_size =
791 le32_to_cpup((__le32 *)tlv_data);
792 break;
793 case IWL_UCODE_TLV_SEC_RT:
794 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
795 tlv_len);
796 drv->fw.mvm_fw = true;
797 break;
798 case IWL_UCODE_TLV_SEC_INIT:
799 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
800 tlv_len);
801 drv->fw.mvm_fw = true;
802 break;
803 case IWL_UCODE_TLV_SEC_WOWLAN:
804 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
805 tlv_len);
806 drv->fw.mvm_fw = true;
807 break;
808 case IWL_UCODE_TLV_DEF_CALIB:
809 if (tlv_len != sizeof(struct iwl_tlv_calib_data))
810 goto invalid_tlv_len;
811 if (iwl_set_default_calib(drv, tlv_data))
812 goto tlv_error;
813 break;
814 case IWL_UCODE_TLV_PHY_SKU:
815 if (tlv_len != sizeof(u32))
816 goto invalid_tlv_len;
817 drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
818 drv->fw.valid_tx_ant = (drv->fw.phy_config &
819 FW_PHY_CFG_TX_CHAIN) >>
820 FW_PHY_CFG_TX_CHAIN_POS;
821 drv->fw.valid_rx_ant = (drv->fw.phy_config &
822 FW_PHY_CFG_RX_CHAIN) >>
823 FW_PHY_CFG_RX_CHAIN_POS;
824 break;
825 case IWL_UCODE_TLV_SECURE_SEC_RT:
826 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
827 tlv_len);
828 drv->fw.mvm_fw = true;
829 break;
830 case IWL_UCODE_TLV_SECURE_SEC_INIT:
831 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
832 tlv_len);
833 drv->fw.mvm_fw = true;
834 break;
835 case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
836 iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
837 tlv_len);
838 drv->fw.mvm_fw = true;
839 break;
840 case IWL_UCODE_TLV_NUM_OF_CPU:
841 if (tlv_len != sizeof(u32))
842 goto invalid_tlv_len;
843 num_of_cpus =
844 le32_to_cpup((__le32 *)tlv_data);
845
846 if (num_of_cpus == 2) {
847 drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
848 true;
849 drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
850 true;
851 drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
852 true;
853 } else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
854 IWL_ERR(drv, "Driver support upto 2 CPUs\n");
855 return -EINVAL;
856 }
857 break;
858 case IWL_UCODE_TLV_CSCHEME:
859 if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
860 goto invalid_tlv_len;
861 break;
862 case IWL_UCODE_TLV_N_SCAN_CHANNELS:
863 if (tlv_len != sizeof(u32))
864 goto invalid_tlv_len;
865 capa->n_scan_channels =
866 le32_to_cpup((__le32 *)tlv_data);
867 break;
868 case IWL_UCODE_TLV_FW_DBG_DEST: {
869 struct iwl_fw_dbg_dest_tlv *dest = (void *)tlv_data;
870
871 if (pieces->dbg_dest_tlv) {
872 IWL_ERR(drv,
873 "dbg destination ignored, already exists\n");
874 break;
875 }
876
877 pieces->dbg_dest_tlv = dest;
878 IWL_INFO(drv, "Found debug destination: %s\n",
879 get_fw_dbg_mode_string(dest->monitor_mode));
880
881 drv->fw.dbg_dest_reg_num =
882 tlv_len - offsetof(struct iwl_fw_dbg_dest_tlv,
883 reg_ops);
884 drv->fw.dbg_dest_reg_num /=
885 sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]);
886
887 break;
888 }
889 case IWL_UCODE_TLV_FW_DBG_CONF: {
890 struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
891
892 if (!pieces->dbg_dest_tlv) {
893 IWL_ERR(drv,
894 "Ignore dbg config %d - no destination configured\n",
895 conf->id);
896 break;
897 }
898
899 if (conf->id >= ARRAY_SIZE(drv->fw.dbg_conf_tlv)) {
900 IWL_ERR(drv,
901 "Skip unknown configuration: %d\n",
902 conf->id);
903 break;
904 }
905
906 if (pieces->dbg_conf_tlv[conf->id]) {
907 IWL_ERR(drv,
908 "Ignore duplicate dbg config %d\n",
909 conf->id);
910 break;
911 }
912
913 if (conf->usniffer)
914 usniffer_req = true;
915
916 IWL_INFO(drv, "Found debug configuration: %d\n",
917 conf->id);
918
919 pieces->dbg_conf_tlv[conf->id] = conf;
920 pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
921 break;
922 }
923 case IWL_UCODE_TLV_SEC_RT_USNIFFER:
924 usniffer_images = true;
925 iwl_store_ucode_sec(pieces, tlv_data,
926 IWL_UCODE_REGULAR_USNIFFER,
927 tlv_len);
928 break;
929 default:
930 IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
931 break;
932 }
933 }
934
935 if (usniffer_req && !usniffer_images) {
936 IWL_ERR(drv,
937 "user selected to work with usniffer but usniffer image isn't available in ucode package\n");
938 return -EINVAL;
939 }
940
941 if (len) {
942 IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
943 iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
944 return -EINVAL;
945 }
946
947 return 0;
948
949 invalid_tlv_len:
950 IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
951 tlv_error:
952 iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
953
954 return -EINVAL;
955 }
956
957 static int iwl_alloc_ucode(struct iwl_drv *drv,
958 struct iwl_firmware_pieces *pieces,
959 enum iwl_ucode_type type)
960 {
961 int i;
962 for (i = 0;
963 i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
964 i++)
965 if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
966 get_sec(pieces, type, i)))
967 return -ENOMEM;
968 return 0;
969 }
970
971 static int validate_sec_sizes(struct iwl_drv *drv,
972 struct iwl_firmware_pieces *pieces,
973 const struct iwl_cfg *cfg)
974 {
975 IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
976 get_sec_size(pieces, IWL_UCODE_REGULAR,
977 IWL_UCODE_SECTION_INST));
978 IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
979 get_sec_size(pieces, IWL_UCODE_REGULAR,
980 IWL_UCODE_SECTION_DATA));
981 IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
982 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
983 IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
984 get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
985
986 /* Verify that uCode images will fit in card's SRAM. */
987 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
988 cfg->max_inst_size) {
989 IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
990 get_sec_size(pieces, IWL_UCODE_REGULAR,
991 IWL_UCODE_SECTION_INST));
992 return -1;
993 }
994
995 if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
996 cfg->max_data_size) {
997 IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
998 get_sec_size(pieces, IWL_UCODE_REGULAR,
999 IWL_UCODE_SECTION_DATA));
1000 return -1;
1001 }
1002
1003 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1004 cfg->max_inst_size) {
1005 IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
1006 get_sec_size(pieces, IWL_UCODE_INIT,
1007 IWL_UCODE_SECTION_INST));
1008 return -1;
1009 }
1010
1011 if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1012 cfg->max_data_size) {
1013 IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
1014 get_sec_size(pieces, IWL_UCODE_REGULAR,
1015 IWL_UCODE_SECTION_DATA));
1016 return -1;
1017 }
1018 return 0;
1019 }
1020
1021 static struct iwl_op_mode *
1022 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1023 {
1024 const struct iwl_op_mode_ops *ops = op->ops;
1025 struct dentry *dbgfs_dir = NULL;
1026 struct iwl_op_mode *op_mode = NULL;
1027
1028 #ifdef CONFIG_IWLWIFI_DEBUGFS
1029 drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1030 drv->dbgfs_drv);
1031 if (!drv->dbgfs_op_mode) {
1032 IWL_ERR(drv,
1033 "failed to create opmode debugfs directory\n");
1034 return op_mode;
1035 }
1036 dbgfs_dir = drv->dbgfs_op_mode;
1037 #endif
1038
1039 op_mode = ops->start(drv->trans, drv->cfg, &drv->fw, dbgfs_dir);
1040
1041 #ifdef CONFIG_IWLWIFI_DEBUGFS
1042 if (!op_mode) {
1043 debugfs_remove_recursive(drv->dbgfs_op_mode);
1044 drv->dbgfs_op_mode = NULL;
1045 }
1046 #endif
1047
1048 return op_mode;
1049 }
1050
1051 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1052 {
1053 /* op_mode can be NULL if its start failed */
1054 if (drv->op_mode) {
1055 iwl_op_mode_stop(drv->op_mode);
1056 drv->op_mode = NULL;
1057
1058 #ifdef CONFIG_IWLWIFI_DEBUGFS
1059 debugfs_remove_recursive(drv->dbgfs_op_mode);
1060 drv->dbgfs_op_mode = NULL;
1061 #endif
1062 }
1063 }
1064
1065 /**
1066 * iwl_req_fw_callback - callback when firmware was loaded
1067 *
1068 * If loaded successfully, copies the firmware into buffers
1069 * for the card to fetch (via DMA).
1070 */
1071 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1072 {
1073 struct iwl_drv *drv = context;
1074 struct iwl_fw *fw = &drv->fw;
1075 struct iwl_ucode_header *ucode;
1076 struct iwlwifi_opmode_table *op;
1077 int err;
1078 struct iwl_firmware_pieces *pieces;
1079 const unsigned int api_max = drv->cfg->ucode_api_max;
1080 unsigned int api_ok = drv->cfg->ucode_api_ok;
1081 const unsigned int api_min = drv->cfg->ucode_api_min;
1082 u32 api_ver;
1083 int i;
1084 bool load_module = false;
1085 u32 hw_rev = drv->trans->hw_rev;
1086
1087 fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1088 fw->ucode_capa.standard_phy_calibration_size =
1089 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1090 fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1091
1092 if (!api_ok)
1093 api_ok = api_max;
1094
1095 pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1096 if (!pieces)
1097 return;
1098
1099 if (!ucode_raw) {
1100 if (drv->fw_index <= api_ok)
1101 IWL_ERR(drv,
1102 "request for firmware file '%s' failed.\n",
1103 drv->firmware_name);
1104 goto try_again;
1105 }
1106
1107 IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1108 drv->firmware_name, ucode_raw->size);
1109
1110 /* Make sure that we got at least the API version number */
1111 if (ucode_raw->size < 4) {
1112 IWL_ERR(drv, "File size way too small!\n");
1113 goto try_again;
1114 }
1115
1116 /* Data from ucode file: header followed by uCode images */
1117 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1118
1119 if (ucode->ver)
1120 err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1121 else
1122 err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1123 &fw->ucode_capa);
1124
1125 if (err)
1126 goto try_again;
1127
1128 api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1129
1130 /*
1131 * api_ver should match the api version forming part of the
1132 * firmware filename ... but we don't check for that and only rely
1133 * on the API version read from firmware header from here on forward
1134 */
1135 /* no api version check required for experimental uCode */
1136 if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1137 if (api_ver < api_min || api_ver > api_max) {
1138 IWL_ERR(drv,
1139 "Driver unable to support your firmware API. "
1140 "Driver supports v%u, firmware is v%u.\n",
1141 api_max, api_ver);
1142 goto try_again;
1143 }
1144
1145 if (api_ver < api_ok) {
1146 if (api_ok != api_max)
1147 IWL_ERR(drv, "Firmware has old API version, "
1148 "expected v%u through v%u, got v%u.\n",
1149 api_ok, api_max, api_ver);
1150 else
1151 IWL_ERR(drv, "Firmware has old API version, "
1152 "expected v%u, got v%u.\n",
1153 api_max, api_ver);
1154 IWL_ERR(drv, "New firmware can be obtained from "
1155 "http://www.intellinuxwireless.org/.\n");
1156 }
1157 }
1158
1159 /*
1160 * In mvm uCode there is no difference between data and instructions
1161 * sections.
1162 */
1163 if (!fw->mvm_fw && validate_sec_sizes(drv, pieces, drv->cfg))
1164 goto try_again;
1165
1166 /* Allocate ucode buffers for card's bus-master loading ... */
1167
1168 /* Runtime instructions and 2 copies of data:
1169 * 1) unmodified from disk
1170 * 2) backup cache for save/restore during power-downs */
1171 for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1172 if (iwl_alloc_ucode(drv, pieces, i))
1173 goto out_free_fw;
1174
1175 if (pieces->dbg_dest_tlv) {
1176 drv->fw.dbg_dest_tlv =
1177 kmemdup(pieces->dbg_dest_tlv,
1178 sizeof(*pieces->dbg_dest_tlv) +
1179 sizeof(pieces->dbg_dest_tlv->reg_ops[0]) *
1180 drv->fw.dbg_dest_reg_num, GFP_KERNEL);
1181
1182 if (!drv->fw.dbg_dest_tlv)
1183 goto out_free_fw;
1184 }
1185
1186 for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++) {
1187 if (pieces->dbg_conf_tlv[i]) {
1188 drv->fw.dbg_conf_tlv_len[i] =
1189 pieces->dbg_conf_tlv_len[i];
1190 drv->fw.dbg_conf_tlv[i] =
1191 kmemdup(pieces->dbg_conf_tlv[i],
1192 drv->fw.dbg_conf_tlv_len[i],
1193 GFP_KERNEL);
1194 if (!drv->fw.dbg_conf_tlv[i])
1195 goto out_free_fw;
1196 }
1197 }
1198
1199 /* Now that we can no longer fail, copy information */
1200
1201 /*
1202 * The (size - 16) / 12 formula is based on the information recorded
1203 * for each event, which is of mode 1 (including timestamp) for all
1204 * new microcodes that include this information.
1205 */
1206 fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1207 if (pieces->init_evtlog_size)
1208 fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1209 else
1210 fw->init_evtlog_size =
1211 drv->cfg->base_params->max_event_log_size;
1212 fw->init_errlog_ptr = pieces->init_errlog_ptr;
1213 fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1214 if (pieces->inst_evtlog_size)
1215 fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1216 else
1217 fw->inst_evtlog_size =
1218 drv->cfg->base_params->max_event_log_size;
1219 fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1220
1221 /*
1222 * figure out the offset of chain noise reset and gain commands
1223 * base on the size of standard phy calibration commands table size
1224 */
1225 if (fw->ucode_capa.standard_phy_calibration_size >
1226 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1227 fw->ucode_capa.standard_phy_calibration_size =
1228 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1229
1230 /* We have our copies now, allow OS release its copies */
1231 release_firmware(ucode_raw);
1232
1233 mutex_lock(&iwlwifi_opmode_table_mtx);
1234 if (fw->mvm_fw)
1235 op = &iwlwifi_opmode_table[MVM_OP_MODE];
1236 else
1237 op = &iwlwifi_opmode_table[DVM_OP_MODE];
1238
1239 IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1240 drv->fw.fw_version, op->name);
1241
1242 /* add this device to the list of devices using this op_mode */
1243 list_add_tail(&drv->list, &op->drv);
1244
1245 if (op->ops) {
1246 drv->op_mode = _iwl_op_mode_start(drv, op);
1247
1248 if (!drv->op_mode) {
1249 mutex_unlock(&iwlwifi_opmode_table_mtx);
1250 goto out_unbind;
1251 }
1252 } else {
1253 load_module = true;
1254 }
1255 mutex_unlock(&iwlwifi_opmode_table_mtx);
1256
1257 /*
1258 * Complete the firmware request last so that
1259 * a driver unbind (stop) doesn't run while we
1260 * are doing the start() above.
1261 */
1262 complete(&drv->request_firmware_complete);
1263
1264 /*
1265 * Load the module last so we don't block anything
1266 * else from proceeding if the module fails to load
1267 * or hangs loading.
1268 */
1269 if (load_module) {
1270 err = request_module("%s", op->name);
1271 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1272 if (err)
1273 IWL_ERR(drv,
1274 "failed to load module %s (error %d), is dynamic loading enabled?\n",
1275 op->name, err);
1276 #endif
1277 }
1278
1279 /*
1280 * We may have loaded the wrong FW file in 8000 HW family if it is an
1281 * A-step card, and if drv->trans->hw_rev wasn't properly read when
1282 * the FW file had been loaded. (This might happen in SDIO.) In such a
1283 * case - unload and reload the correct file.
1284 *
1285 * TODO:
1286 * Once there is only one supported step for 8000 family - delete this!
1287 */
1288 if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1289 CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_A_STEP &&
1290 drv->trans->hw_rev != hw_rev) {
1291 char firmware_name[32];
1292
1293 /* Free previous FW resources */
1294 if (drv->op_mode)
1295 _iwl_op_mode_stop(drv);
1296 iwl_dealloc_ucode(drv);
1297
1298 /* Build name of correct-step FW */
1299 snprintf(firmware_name, sizeof(firmware_name),
1300 strrchr(drv->firmware_name, '-'));
1301 snprintf(drv->firmware_name, sizeof(drv->firmware_name),
1302 "%s%s", drv->cfg->fw_name_pre, firmware_name);
1303
1304 /* Clear data before loading correct FW */
1305 list_del(&drv->list);
1306
1307 /* Request correct FW file this time */
1308 IWL_DEBUG_INFO(drv, "attempting to load A-step FW %s\n",
1309 drv->firmware_name);
1310 err = request_firmware(&ucode_raw, drv->firmware_name,
1311 drv->trans->dev);
1312 if (err) {
1313 IWL_ERR(drv, "Failed swapping FW!\n");
1314 goto out_unbind;
1315 }
1316
1317 /* Redo callback function - this time with right FW */
1318 iwl_req_fw_callback(ucode_raw, context);
1319 }
1320
1321 kfree(pieces);
1322 return;
1323
1324 try_again:
1325 /* try next, if any */
1326 kfree(pieces);
1327 release_firmware(ucode_raw);
1328 if (iwl_request_firmware(drv, false))
1329 goto out_unbind;
1330 return;
1331
1332 out_free_fw:
1333 IWL_ERR(drv, "failed to allocate pci memory\n");
1334 iwl_dealloc_ucode(drv);
1335 release_firmware(ucode_raw);
1336 out_unbind:
1337 kfree(pieces);
1338 complete(&drv->request_firmware_complete);
1339 device_release_driver(drv->trans->dev);
1340 }
1341
1342 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1343 const struct iwl_cfg *cfg)
1344 {
1345 struct iwl_drv *drv;
1346 int ret;
1347
1348 drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1349 if (!drv) {
1350 ret = -ENOMEM;
1351 goto err;
1352 }
1353
1354 drv->trans = trans;
1355 drv->dev = trans->dev;
1356 drv->cfg = cfg;
1357
1358 init_completion(&drv->request_firmware_complete);
1359 INIT_LIST_HEAD(&drv->list);
1360
1361 #ifdef CONFIG_IWLWIFI_DEBUGFS
1362 /* Create the device debugfs entries. */
1363 drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1364 iwl_dbgfs_root);
1365
1366 if (!drv->dbgfs_drv) {
1367 IWL_ERR(drv, "failed to create debugfs directory\n");
1368 ret = -ENOMEM;
1369 goto err_free_drv;
1370 }
1371
1372 /* Create transport layer debugfs dir */
1373 drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1374
1375 if (!drv->trans->dbgfs_dir) {
1376 IWL_ERR(drv, "failed to create transport debugfs directory\n");
1377 ret = -ENOMEM;
1378 goto err_free_dbgfs;
1379 }
1380 #endif
1381
1382 ret = iwl_request_firmware(drv, true);
1383 if (ret) {
1384 IWL_ERR(trans, "Couldn't request the fw\n");
1385 goto err_fw;
1386 }
1387
1388 return drv;
1389
1390 err_fw:
1391 #ifdef CONFIG_IWLWIFI_DEBUGFS
1392 err_free_dbgfs:
1393 debugfs_remove_recursive(drv->dbgfs_drv);
1394 err_free_drv:
1395 #endif
1396 kfree(drv);
1397 err:
1398 return ERR_PTR(ret);
1399 }
1400
1401 void iwl_drv_stop(struct iwl_drv *drv)
1402 {
1403 wait_for_completion(&drv->request_firmware_complete);
1404
1405 _iwl_op_mode_stop(drv);
1406
1407 iwl_dealloc_ucode(drv);
1408
1409 mutex_lock(&iwlwifi_opmode_table_mtx);
1410 /*
1411 * List is empty (this item wasn't added)
1412 * when firmware loading failed -- in that
1413 * case we can't remove it from any list.
1414 */
1415 if (!list_empty(&drv->list))
1416 list_del(&drv->list);
1417 mutex_unlock(&iwlwifi_opmode_table_mtx);
1418
1419 #ifdef CONFIG_IWLWIFI_DEBUGFS
1420 debugfs_remove_recursive(drv->dbgfs_drv);
1421 #endif
1422
1423 kfree(drv);
1424 }
1425
1426
1427 /* shared module parameters */
1428 struct iwl_mod_params iwlwifi_mod_params = {
1429 .restart_fw = true,
1430 .bt_coex_active = true,
1431 .power_level = IWL_POWER_INDEX_1,
1432 .wd_disable = true,
1433 #ifndef CONFIG_IWLWIFI_UAPSD
1434 .uapsd_disable = true,
1435 #endif /* CONFIG_IWLWIFI_UAPSD */
1436 /* the rest are 0 by default */
1437 };
1438 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1439
1440 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1441 {
1442 int i;
1443 struct iwl_drv *drv;
1444 struct iwlwifi_opmode_table *op;
1445
1446 mutex_lock(&iwlwifi_opmode_table_mtx);
1447 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1448 op = &iwlwifi_opmode_table[i];
1449 if (strcmp(op->name, name))
1450 continue;
1451 op->ops = ops;
1452 /* TODO: need to handle exceptional case */
1453 list_for_each_entry(drv, &op->drv, list)
1454 drv->op_mode = _iwl_op_mode_start(drv, op);
1455
1456 mutex_unlock(&iwlwifi_opmode_table_mtx);
1457 return 0;
1458 }
1459 mutex_unlock(&iwlwifi_opmode_table_mtx);
1460 return -EIO;
1461 }
1462 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1463
1464 void iwl_opmode_deregister(const char *name)
1465 {
1466 int i;
1467 struct iwl_drv *drv;
1468
1469 mutex_lock(&iwlwifi_opmode_table_mtx);
1470 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1471 if (strcmp(iwlwifi_opmode_table[i].name, name))
1472 continue;
1473 iwlwifi_opmode_table[i].ops = NULL;
1474
1475 /* call the stop routine for all devices */
1476 list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1477 _iwl_op_mode_stop(drv);
1478
1479 mutex_unlock(&iwlwifi_opmode_table_mtx);
1480 return;
1481 }
1482 mutex_unlock(&iwlwifi_opmode_table_mtx);
1483 }
1484 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1485
1486 static int __init iwl_drv_init(void)
1487 {
1488 int i;
1489
1490 mutex_init(&iwlwifi_opmode_table_mtx);
1491
1492 for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1493 INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1494
1495 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1496 pr_info(DRV_COPYRIGHT "\n");
1497
1498 #ifdef CONFIG_IWLWIFI_DEBUGFS
1499 /* Create the root of iwlwifi debugfs subsystem. */
1500 iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1501
1502 if (!iwl_dbgfs_root)
1503 return -EFAULT;
1504 #endif
1505
1506 return iwl_pci_register_driver();
1507 }
1508 module_init(iwl_drv_init);
1509
1510 static void __exit iwl_drv_exit(void)
1511 {
1512 iwl_pci_unregister_driver();
1513
1514 #ifdef CONFIG_IWLWIFI_DEBUGFS
1515 debugfs_remove_recursive(iwl_dbgfs_root);
1516 #endif
1517 }
1518 module_exit(iwl_drv_exit);
1519
1520 #ifdef CONFIG_IWLWIFI_DEBUG
1521 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1522 S_IRUGO | S_IWUSR);
1523 MODULE_PARM_DESC(debug, "debug output mask");
1524 #endif
1525
1526 module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
1527 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1528 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1529 MODULE_PARM_DESC(11n_disable,
1530 "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1531 module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
1532 int, S_IRUGO);
1533 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)");
1534 module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, bool, S_IRUGO);
1535 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1536
1537 module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
1538 int, S_IRUGO);
1539 MODULE_PARM_DESC(antenna_coupling,
1540 "specify antenna coupling in dB (default: 0 dB)");
1541
1542 module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
1543 MODULE_PARM_DESC(wd_disable,
1544 "Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1)");
1545
1546 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1547 MODULE_PARM_DESC(nvm_file, "NVM file name");
1548
1549 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1550 bool, S_IRUGO);
1551 #ifdef CONFIG_IWLWIFI_UAPSD
1552 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: N)");
1553 #else
1554 MODULE_PARM_DESC(uapsd_disable, "disable U-APSD functionality (default: Y)");
1555 #endif
1556
1557 /*
1558 * set bt_coex_active to true, uCode will do kill/defer
1559 * every time the priority line is asserted (BT is sending signals on the
1560 * priority line in the PCIx).
1561 * set bt_coex_active to false, uCode will ignore the BT activity and
1562 * perform the normal operation
1563 *
1564 * User might experience transmit issue on some platform due to WiFi/BT
1565 * co-exist problem. The possible behaviors are:
1566 * Able to scan and finding all the available AP
1567 * Not able to associate with any AP
1568 * On those platforms, WiFi communication can be restored by set
1569 * "bt_coex_active" module parameter to "false"
1570 *
1571 * default: bt_coex_active = true (BT_COEX_ENABLE)
1572 */
1573 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1574 bool, S_IRUGO);
1575 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1576
1577 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1578 MODULE_PARM_DESC(led_mode, "0=system default, "
1579 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1580
1581 module_param_named(power_save, iwlwifi_mod_params.power_save,
1582 bool, S_IRUGO);
1583 MODULE_PARM_DESC(power_save,
1584 "enable WiFi power management (default: disable)");
1585
1586 module_param_named(power_level, iwlwifi_mod_params.power_level,
1587 int, S_IRUGO);
1588 MODULE_PARM_DESC(power_level,
1589 "default power save level (range from 1 - 5, default: 1)");
1590
1591 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1592 MODULE_PARM_DESC(fw_monitor,
1593 "firmware monitor - to debug FW (default: false - needs lots of memory)");
Linux with added FPC-III support