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 - 2015 Intel Mobile Communications GmbH
10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of version 2 of the GNU General Public License as
14  * published by the Free Software Foundation.
15  *
16  * This program is distributed in the hope that it will be useful, but
17  * WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19  * General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24  * USA
25  *
26  * The full GNU General Public License is included in this distribution
27  * in the file called COPYING.
28  *
29  * Contact Information:
30  *  Intel Linux Wireless <linuxwifi@intel.com>
31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32  *
33  * BSD LICENSE
34  *
35  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
38  * All rights reserved.
39  *
40  * Redistribution and use in source and binary forms, with or without
41  * modification, are permitted provided that the following conditions
42  * are met:
43  *
44  *  * Redistributions of source code must retain the above copyright
45  *    notice, this list of conditions and the following disclaimer.
46  *  * Redistributions in binary form must reproduce the above copyright
47  *    notice, this list of conditions and the following disclaimer in
48  *    the documentation and/or other materials provided with the
49  *    distribution.
50  *  * Neither the name Intel Corporation nor the names of its
51  *    contributors may be used to endorse or promote products derived
52  *    from this software without specific prior written permission.
53  *
54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65  *
66  *****************************************************************************/
67 #include <linux/completion.h>
68 #include <linux/dma-mapping.h>
69 #include <linux/firmware.h>
70 #include <linux/module.h>
71 #include <linux/vmalloc.h>
72 
73 #include "iwl-drv.h"
74 #include "iwl-csr.h"
75 #include "iwl-debug.h"
76 #include "iwl-trans.h"
77 #include "iwl-op-mode.h"
78 #include "iwl-agn-hw.h"
79 #include "fw/img.h"
80 #include "iwl-config.h"
81 #include "iwl-modparams.h"
82 
83 /******************************************************************************
84  *
85  * module boiler plate
86  *
87  ******************************************************************************/
88 
89 #define DRV_DESCRIPTION	"Intel(R) Wireless WiFi driver for Linux"
90 MODULE_DESCRIPTION(DRV_DESCRIPTION);
91 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
92 MODULE_LICENSE("GPL");
93 
94 #ifdef CONFIG_IWLWIFI_DEBUGFS
95 static struct dentry *iwl_dbgfs_root;
96 #endif
97 
98 /**
99  * struct iwl_drv - drv common data
100  * @list: list of drv structures using this opmode
101  * @fw: the iwl_fw structure
102  * @op_mode: the running op_mode
103  * @trans: transport layer
104  * @dev: for debug prints only
105  * @fw_index: firmware revision to try loading
106  * @firmware_name: composite filename of ucode file to load
107  * @request_firmware_complete: the firmware has been obtained from user space
108  */
109 struct iwl_drv {
110 	struct list_head list;
111 	struct iwl_fw fw;
112 
113 	struct iwl_op_mode *op_mode;
114 	struct iwl_trans *trans;
115 	struct device *dev;
116 
117 	int fw_index;                   /* firmware we're trying to load */
118 	char firmware_name[64];         /* 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,
131 	MVM_OP_MODE,
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 
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 
164 static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
165 {
166 	int i;
167 	for (i = 0; i < img->num_sec; i++)
168 		iwl_free_fw_desc(drv, &img->sec[i]);
169 	kfree(img->sec);
170 }
171 
172 static void iwl_dealloc_ucode(struct iwl_drv *drv)
173 {
174 	int i;
175 
176 	kfree(drv->fw.dbg_dest_tlv);
177 	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++)
178 		kfree(drv->fw.dbg_conf_tlv[i]);
179 	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++)
180 		kfree(drv->fw.dbg_trigger_tlv[i]);
181 	kfree(drv->fw.dbg_mem_tlv);
182 
183 	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
184 		iwl_free_fw_img(drv, drv->fw.img + i);
185 }
186 
187 static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
188 			     struct fw_sec *sec)
189 {
190 	void *data;
191 
192 	desc->data = NULL;
193 
194 	if (!sec || !sec->size)
195 		return -EINVAL;
196 
197 	data = vmalloc(sec->size);
198 	if (!data)
199 		return -ENOMEM;
200 
201 	desc->len = sec->size;
202 	desc->offset = sec->offset;
203 	memcpy(data, sec->data, desc->len);
204 	desc->data = data;
205 
206 	return 0;
207 }
208 
209 static void iwl_req_fw_callback(const struct firmware *ucode_raw,
210 				void *context);
211 
212 static int iwl_request_firmware(struct iwl_drv *drv, bool first)
213 {
214 	const struct iwl_cfg *cfg = drv->trans->cfg;
215 	char tag[8];
216 	const char *fw_pre_name;
217 
218 	if (drv->trans->cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
219 	    CSR_HW_REV_STEP(drv->trans->hw_rev) == SILICON_B_STEP)
220 		fw_pre_name = cfg->fw_name_pre_next_step;
221 	else if (drv->trans->cfg->integrated &&
222 		 CSR_HW_RFID_STEP(drv->trans->hw_rf_id) == SILICON_B_STEP &&
223 		 cfg->fw_name_pre_rf_next_step)
224 		fw_pre_name = cfg->fw_name_pre_rf_next_step;
225 	else
226 		fw_pre_name = cfg->fw_name_pre;
227 
228 	if (first) {
229 		drv->fw_index = cfg->ucode_api_max;
230 		sprintf(tag, "%d", drv->fw_index);
231 	} else {
232 		drv->fw_index--;
233 		sprintf(tag, "%d", drv->fw_index);
234 	}
235 
236 	if (drv->fw_index < cfg->ucode_api_min) {
237 		IWL_ERR(drv, "no suitable firmware found!\n");
238 
239 		if (cfg->ucode_api_min == cfg->ucode_api_max) {
240 			IWL_ERR(drv, "%s%d is required\n", fw_pre_name,
241 				cfg->ucode_api_max);
242 		} else {
243 			IWL_ERR(drv, "minimum version required: %s%d\n",
244 				fw_pre_name,
245 				cfg->ucode_api_min);
246 			IWL_ERR(drv, "maximum version supported: %s%d\n",
247 				fw_pre_name,
248 				cfg->ucode_api_max);
249 		}
250 
251 		IWL_ERR(drv,
252 			"check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git\n");
253 		return -ENOENT;
254 	}
255 
256 	snprintf(drv->firmware_name, sizeof(drv->firmware_name), "%s%s.ucode",
257 		 fw_pre_name, tag);
258 
259 	IWL_DEBUG_INFO(drv, "attempting to load firmware '%s'\n",
260 		       drv->firmware_name);
261 
262 	return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
263 				       drv->trans->dev,
264 				       GFP_KERNEL, drv, iwl_req_fw_callback);
265 }
266 
267 struct fw_img_parsing {
268 	struct fw_sec *sec;
269 	int sec_counter;
270 };
271 
272 /*
273  * struct fw_sec_parsing: to extract fw section and it's offset from tlv
274  */
275 struct fw_sec_parsing {
276 	__le32 offset;
277 	const u8 data[];
278 } __packed;
279 
280 /**
281  * struct iwl_tlv_calib_data - parse the default calib data from TLV
282  *
283  * @ucode_type: the uCode to which the following default calib relates.
284  * @calib: default calibrations.
285  */
286 struct iwl_tlv_calib_data {
287 	__le32 ucode_type;
288 	struct iwl_tlv_calib_ctrl calib;
289 } __packed;
290 
291 struct iwl_firmware_pieces {
292 	struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
293 
294 	u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
295 	u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
296 
297 	/* FW debug data parsed for driver usage */
298 	struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
299 	struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
300 	size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
301 	struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
302 	size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
303 	struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv;
304 	size_t n_dbg_mem_tlv;
305 };
306 
307 /*
308  * These functions are just to extract uCode section data from the pieces
309  * structure.
310  */
311 static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
312 			      enum iwl_ucode_type type,
313 			      int  sec)
314 {
315 	return &pieces->img[type].sec[sec];
316 }
317 
318 static void alloc_sec_data(struct iwl_firmware_pieces *pieces,
319 			   enum iwl_ucode_type type,
320 			   int sec)
321 {
322 	struct fw_img_parsing *img = &pieces->img[type];
323 	struct fw_sec *sec_memory;
324 	int size = sec + 1;
325 	size_t alloc_size = sizeof(*img->sec) * size;
326 
327 	if (img->sec && img->sec_counter >= size)
328 		return;
329 
330 	sec_memory = krealloc(img->sec, alloc_size, GFP_KERNEL);
331 	if (!sec_memory)
332 		return;
333 
334 	img->sec = sec_memory;
335 	img->sec_counter = size;
336 }
337 
338 static void set_sec_data(struct iwl_firmware_pieces *pieces,
339 			 enum iwl_ucode_type type,
340 			 int sec,
341 			 const void *data)
342 {
343 	alloc_sec_data(pieces, type, sec);
344 
345 	pieces->img[type].sec[sec].data = data;
346 }
347 
348 static void set_sec_size(struct iwl_firmware_pieces *pieces,
349 			 enum iwl_ucode_type type,
350 			 int sec,
351 			 size_t size)
352 {
353 	alloc_sec_data(pieces, type, sec);
354 
355 	pieces->img[type].sec[sec].size = size;
356 }
357 
358 static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
359 			   enum iwl_ucode_type type,
360 			   int sec)
361 {
362 	return pieces->img[type].sec[sec].size;
363 }
364 
365 static void set_sec_offset(struct iwl_firmware_pieces *pieces,
366 			   enum iwl_ucode_type type,
367 			   int sec,
368 			   u32 offset)
369 {
370 	alloc_sec_data(pieces, type, sec);
371 
372 	pieces->img[type].sec[sec].offset = offset;
373 }
374 
375 static int iwl_store_cscheme(struct iwl_fw *fw, const u8 *data, const u32 len)
376 {
377 	int i, j;
378 	struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
379 	struct iwl_fw_cipher_scheme *fwcs;
380 
381 	if (len < sizeof(*l) ||
382 	    len < sizeof(l->size) + l->size * sizeof(l->cs[0]))
383 		return -EINVAL;
384 
385 	for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
386 		fwcs = &l->cs[j];
387 
388 		/* we skip schemes with zero cipher suite selector */
389 		if (!fwcs->cipher)
390 			continue;
391 
392 		fw->cs[j++] = *fwcs;
393 	}
394 
395 	return 0;
396 }
397 
398 static void iwl_store_gscan_capa(struct iwl_fw *fw, const u8 *data,
399 				 const u32 len)
400 {
401 	struct iwl_fw_gscan_capabilities *fw_capa = (void *)data;
402 	struct iwl_gscan_capabilities *capa = &fw->gscan_capa;
403 
404 	capa->max_scan_cache_size = le32_to_cpu(fw_capa->max_scan_cache_size);
405 	capa->max_scan_buckets = le32_to_cpu(fw_capa->max_scan_buckets);
406 	capa->max_ap_cache_per_scan =
407 		le32_to_cpu(fw_capa->max_ap_cache_per_scan);
408 	capa->max_rssi_sample_size = le32_to_cpu(fw_capa->max_rssi_sample_size);
409 	capa->max_scan_reporting_threshold =
410 		le32_to_cpu(fw_capa->max_scan_reporting_threshold);
411 	capa->max_hotlist_aps = le32_to_cpu(fw_capa->max_hotlist_aps);
412 	capa->max_significant_change_aps =
413 		le32_to_cpu(fw_capa->max_significant_change_aps);
414 	capa->max_bssid_history_entries =
415 		le32_to_cpu(fw_capa->max_bssid_history_entries);
416 	capa->max_hotlist_ssids = le32_to_cpu(fw_capa->max_hotlist_ssids);
417 	capa->max_number_epno_networks =
418 		le32_to_cpu(fw_capa->max_number_epno_networks);
419 	capa->max_number_epno_networks_by_ssid =
420 		le32_to_cpu(fw_capa->max_number_epno_networks_by_ssid);
421 	capa->max_number_of_white_listed_ssid =
422 		le32_to_cpu(fw_capa->max_number_of_white_listed_ssid);
423 	capa->max_number_of_black_listed_ssid =
424 		le32_to_cpu(fw_capa->max_number_of_black_listed_ssid);
425 }
426 
427 /*
428  * Gets uCode section from tlv.
429  */
430 static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
431 			       const void *data, enum iwl_ucode_type type,
432 			       int size)
433 {
434 	struct fw_img_parsing *img;
435 	struct fw_sec *sec;
436 	struct fw_sec_parsing *sec_parse;
437 	size_t alloc_size;
438 
439 	if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX))
440 		return -1;
441 
442 	sec_parse = (struct fw_sec_parsing *)data;
443 
444 	img = &pieces->img[type];
445 
446 	alloc_size = sizeof(*img->sec) * (img->sec_counter + 1);
447 	sec = krealloc(img->sec, alloc_size, GFP_KERNEL);
448 	if (!sec)
449 		return -ENOMEM;
450 	img->sec = sec;
451 
452 	sec = &img->sec[img->sec_counter];
453 
454 	sec->offset = le32_to_cpu(sec_parse->offset);
455 	sec->data = sec_parse->data;
456 	sec->size = size - sizeof(sec_parse->offset);
457 
458 	++img->sec_counter;
459 
460 	return 0;
461 }
462 
463 static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
464 {
465 	struct iwl_tlv_calib_data *def_calib =
466 					(struct iwl_tlv_calib_data *)data;
467 	u32 ucode_type = le32_to_cpu(def_calib->ucode_type);
468 	if (ucode_type >= IWL_UCODE_TYPE_MAX) {
469 		IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
470 			ucode_type);
471 		return -EINVAL;
472 	}
473 	drv->fw.default_calib[ucode_type].flow_trigger =
474 		def_calib->calib.flow_trigger;
475 	drv->fw.default_calib[ucode_type].event_trigger =
476 		def_calib->calib.event_trigger;
477 
478 	return 0;
479 }
480 
481 static int iwl_set_ucode_api_flags(struct iwl_drv *drv, const u8 *data,
482 				   struct iwl_ucode_capabilities *capa)
483 {
484 	const struct iwl_ucode_api *ucode_api = (void *)data;
485 	u32 api_index = le32_to_cpu(ucode_api->api_index);
486 	u32 api_flags = le32_to_cpu(ucode_api->api_flags);
487 	int i;
488 
489 	if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_API, 32)) {
490 		IWL_ERR(drv,
491 			"api flags index %d larger than supported by driver\n",
492 			api_index);
493 		/* don't return an error so we can load FW that has more bits */
494 		return 0;
495 	}
496 
497 	for (i = 0; i < 32; i++) {
498 		if (api_flags & BIT(i))
499 			__set_bit(i + 32 * api_index, capa->_api);
500 	}
501 
502 	return 0;
503 }
504 
505 static int iwl_set_ucode_capabilities(struct iwl_drv *drv, const u8 *data,
506 				      struct iwl_ucode_capabilities *capa)
507 {
508 	const struct iwl_ucode_capa *ucode_capa = (void *)data;
509 	u32 api_index = le32_to_cpu(ucode_capa->api_index);
510 	u32 api_flags = le32_to_cpu(ucode_capa->api_capa);
511 	int i;
512 
513 	if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_CAPA, 32)) {
514 		IWL_ERR(drv,
515 			"capa flags index %d larger than supported by driver\n",
516 			api_index);
517 		/* don't return an error so we can load FW that has more bits */
518 		return 0;
519 	}
520 
521 	for (i = 0; i < 32; i++) {
522 		if (api_flags & BIT(i))
523 			__set_bit(i + 32 * api_index, capa->_capa);
524 	}
525 
526 	return 0;
527 }
528 
529 static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
530 				    const struct firmware *ucode_raw,
531 				    struct iwl_firmware_pieces *pieces)
532 {
533 	struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
534 	u32 api_ver, hdr_size, build;
535 	char buildstr[25];
536 	const u8 *src;
537 
538 	drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
539 	api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
540 
541 	switch (api_ver) {
542 	default:
543 		hdr_size = 28;
544 		if (ucode_raw->size < hdr_size) {
545 			IWL_ERR(drv, "File size too small!\n");
546 			return -EINVAL;
547 		}
548 		build = le32_to_cpu(ucode->u.v2.build);
549 		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
550 			     le32_to_cpu(ucode->u.v2.inst_size));
551 		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
552 			     le32_to_cpu(ucode->u.v2.data_size));
553 		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
554 			     le32_to_cpu(ucode->u.v2.init_size));
555 		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
556 			     le32_to_cpu(ucode->u.v2.init_data_size));
557 		src = ucode->u.v2.data;
558 		break;
559 	case 0:
560 	case 1:
561 	case 2:
562 		hdr_size = 24;
563 		if (ucode_raw->size < hdr_size) {
564 			IWL_ERR(drv, "File size too small!\n");
565 			return -EINVAL;
566 		}
567 		build = 0;
568 		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
569 			     le32_to_cpu(ucode->u.v1.inst_size));
570 		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
571 			     le32_to_cpu(ucode->u.v1.data_size));
572 		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
573 			     le32_to_cpu(ucode->u.v1.init_size));
574 		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
575 			     le32_to_cpu(ucode->u.v1.init_data_size));
576 		src = ucode->u.v1.data;
577 		break;
578 	}
579 
580 	if (build)
581 		sprintf(buildstr, " build %u", build);
582 	else
583 		buildstr[0] = '\0';
584 
585 	snprintf(drv->fw.fw_version,
586 		 sizeof(drv->fw.fw_version),
587 		 "%u.%u.%u.%u%s",
588 		 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
589 		 IWL_UCODE_MINOR(drv->fw.ucode_ver),
590 		 IWL_UCODE_API(drv->fw.ucode_ver),
591 		 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
592 		 buildstr);
593 
594 	/* Verify size of file vs. image size info in file's header */
595 
596 	if (ucode_raw->size != hdr_size +
597 	    get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) +
598 	    get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) +
599 	    get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) +
600 	    get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA)) {
601 
602 		IWL_ERR(drv,
603 			"uCode file size %d does not match expected size\n",
604 			(int)ucode_raw->size);
605 		return -EINVAL;
606 	}
607 
608 
609 	set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
610 	src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
611 	set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
612 		       IWLAGN_RTC_INST_LOWER_BOUND);
613 	set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
614 	src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
615 	set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
616 		       IWLAGN_RTC_DATA_LOWER_BOUND);
617 	set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
618 	src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
619 	set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
620 		       IWLAGN_RTC_INST_LOWER_BOUND);
621 	set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
622 	src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
623 	set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
624 		       IWLAGN_RTC_DATA_LOWER_BOUND);
625 	return 0;
626 }
627 
628 static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
629 				const struct firmware *ucode_raw,
630 				struct iwl_firmware_pieces *pieces,
631 				struct iwl_ucode_capabilities *capa,
632 				bool *usniffer_images)
633 {
634 	struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
635 	struct iwl_ucode_tlv *tlv;
636 	size_t len = ucode_raw->size;
637 	const u8 *data;
638 	u32 tlv_len;
639 	u32 usniffer_img;
640 	enum iwl_ucode_tlv_type tlv_type;
641 	const u8 *tlv_data;
642 	char buildstr[25];
643 	u32 build, paging_mem_size;
644 	int num_of_cpus;
645 	bool usniffer_req = false;
646 	bool gscan_capa = false;
647 
648 	if (len < sizeof(*ucode)) {
649 		IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
650 		return -EINVAL;
651 	}
652 
653 	if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
654 		IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
655 			le32_to_cpu(ucode->magic));
656 		return -EINVAL;
657 	}
658 
659 	drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
660 	memcpy(drv->fw.human_readable, ucode->human_readable,
661 	       sizeof(drv->fw.human_readable));
662 	build = le32_to_cpu(ucode->build);
663 
664 	if (build)
665 		sprintf(buildstr, " build %u", build);
666 	else
667 		buildstr[0] = '\0';
668 
669 	snprintf(drv->fw.fw_version,
670 		 sizeof(drv->fw.fw_version),
671 		 "%u.%u.%u.%u%s",
672 		 IWL_UCODE_MAJOR(drv->fw.ucode_ver),
673 		 IWL_UCODE_MINOR(drv->fw.ucode_ver),
674 		 IWL_UCODE_API(drv->fw.ucode_ver),
675 		 IWL_UCODE_SERIAL(drv->fw.ucode_ver),
676 		 buildstr);
677 
678 	data = ucode->data;
679 
680 	len -= sizeof(*ucode);
681 
682 	while (len >= sizeof(*tlv)) {
683 		len -= sizeof(*tlv);
684 		tlv = (void *)data;
685 
686 		tlv_len = le32_to_cpu(tlv->length);
687 		tlv_type = le32_to_cpu(tlv->type);
688 		tlv_data = tlv->data;
689 
690 		if (len < tlv_len) {
691 			IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
692 				len, tlv_len);
693 			return -EINVAL;
694 		}
695 		len -= ALIGN(tlv_len, 4);
696 		data += sizeof(*tlv) + ALIGN(tlv_len, 4);
697 
698 		switch (tlv_type) {
699 		case IWL_UCODE_TLV_INST:
700 			set_sec_data(pieces, IWL_UCODE_REGULAR,
701 				     IWL_UCODE_SECTION_INST, tlv_data);
702 			set_sec_size(pieces, IWL_UCODE_REGULAR,
703 				     IWL_UCODE_SECTION_INST, tlv_len);
704 			set_sec_offset(pieces, IWL_UCODE_REGULAR,
705 				       IWL_UCODE_SECTION_INST,
706 				       IWLAGN_RTC_INST_LOWER_BOUND);
707 			break;
708 		case IWL_UCODE_TLV_DATA:
709 			set_sec_data(pieces, IWL_UCODE_REGULAR,
710 				     IWL_UCODE_SECTION_DATA, tlv_data);
711 			set_sec_size(pieces, IWL_UCODE_REGULAR,
712 				     IWL_UCODE_SECTION_DATA, tlv_len);
713 			set_sec_offset(pieces, IWL_UCODE_REGULAR,
714 				       IWL_UCODE_SECTION_DATA,
715 				       IWLAGN_RTC_DATA_LOWER_BOUND);
716 			break;
717 		case IWL_UCODE_TLV_INIT:
718 			set_sec_data(pieces, IWL_UCODE_INIT,
719 				     IWL_UCODE_SECTION_INST, tlv_data);
720 			set_sec_size(pieces, IWL_UCODE_INIT,
721 				     IWL_UCODE_SECTION_INST, tlv_len);
722 			set_sec_offset(pieces, IWL_UCODE_INIT,
723 				       IWL_UCODE_SECTION_INST,
724 				       IWLAGN_RTC_INST_LOWER_BOUND);
725 			break;
726 		case IWL_UCODE_TLV_INIT_DATA:
727 			set_sec_data(pieces, IWL_UCODE_INIT,
728 				     IWL_UCODE_SECTION_DATA, tlv_data);
729 			set_sec_size(pieces, IWL_UCODE_INIT,
730 				     IWL_UCODE_SECTION_DATA, tlv_len);
731 			set_sec_offset(pieces, IWL_UCODE_INIT,
732 				       IWL_UCODE_SECTION_DATA,
733 				       IWLAGN_RTC_DATA_LOWER_BOUND);
734 			break;
735 		case IWL_UCODE_TLV_BOOT:
736 			IWL_ERR(drv, "Found unexpected BOOT ucode\n");
737 			break;
738 		case IWL_UCODE_TLV_PROBE_MAX_LEN:
739 			if (tlv_len != sizeof(u32))
740 				goto invalid_tlv_len;
741 			capa->max_probe_length =
742 					le32_to_cpup((__le32 *)tlv_data);
743 			break;
744 		case IWL_UCODE_TLV_PAN:
745 			if (tlv_len)
746 				goto invalid_tlv_len;
747 			capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
748 			break;
749 		case IWL_UCODE_TLV_FLAGS:
750 			/* must be at least one u32 */
751 			if (tlv_len < sizeof(u32))
752 				goto invalid_tlv_len;
753 			/* and a proper number of u32s */
754 			if (tlv_len % sizeof(u32))
755 				goto invalid_tlv_len;
756 			/*
757 			 * This driver only reads the first u32 as
758 			 * right now no more features are defined,
759 			 * if that changes then either the driver
760 			 * will not work with the new firmware, or
761 			 * it'll not take advantage of new features.
762 			 */
763 			capa->flags = le32_to_cpup((__le32 *)tlv_data);
764 			break;
765 		case IWL_UCODE_TLV_API_CHANGES_SET:
766 			if (tlv_len != sizeof(struct iwl_ucode_api))
767 				goto invalid_tlv_len;
768 			if (iwl_set_ucode_api_flags(drv, tlv_data, capa))
769 				goto tlv_error;
770 			break;
771 		case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
772 			if (tlv_len != sizeof(struct iwl_ucode_capa))
773 				goto invalid_tlv_len;
774 			if (iwl_set_ucode_capabilities(drv, tlv_data, capa))
775 				goto tlv_error;
776 			break;
777 		case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
778 			if (tlv_len != sizeof(u32))
779 				goto invalid_tlv_len;
780 			pieces->init_evtlog_ptr =
781 					le32_to_cpup((__le32 *)tlv_data);
782 			break;
783 		case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
784 			if (tlv_len != sizeof(u32))
785 				goto invalid_tlv_len;
786 			pieces->init_evtlog_size =
787 					le32_to_cpup((__le32 *)tlv_data);
788 			break;
789 		case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
790 			if (tlv_len != sizeof(u32))
791 				goto invalid_tlv_len;
792 			pieces->init_errlog_ptr =
793 					le32_to_cpup((__le32 *)tlv_data);
794 			break;
795 		case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
796 			if (tlv_len != sizeof(u32))
797 				goto invalid_tlv_len;
798 			pieces->inst_evtlog_ptr =
799 					le32_to_cpup((__le32 *)tlv_data);
800 			break;
801 		case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
802 			if (tlv_len != sizeof(u32))
803 				goto invalid_tlv_len;
804 			pieces->inst_evtlog_size =
805 					le32_to_cpup((__le32 *)tlv_data);
806 			break;
807 		case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
808 			if (tlv_len != sizeof(u32))
809 				goto invalid_tlv_len;
810 			pieces->inst_errlog_ptr =
811 					le32_to_cpup((__le32 *)tlv_data);
812 			break;
813 		case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
814 			if (tlv_len)
815 				goto invalid_tlv_len;
816 			drv->fw.enhance_sensitivity_table = true;
817 			break;
818 		case IWL_UCODE_TLV_WOWLAN_INST:
819 			set_sec_data(pieces, IWL_UCODE_WOWLAN,
820 				     IWL_UCODE_SECTION_INST, tlv_data);
821 			set_sec_size(pieces, IWL_UCODE_WOWLAN,
822 				     IWL_UCODE_SECTION_INST, tlv_len);
823 			set_sec_offset(pieces, IWL_UCODE_WOWLAN,
824 				       IWL_UCODE_SECTION_INST,
825 				       IWLAGN_RTC_INST_LOWER_BOUND);
826 			break;
827 		case IWL_UCODE_TLV_WOWLAN_DATA:
828 			set_sec_data(pieces, IWL_UCODE_WOWLAN,
829 				     IWL_UCODE_SECTION_DATA, tlv_data);
830 			set_sec_size(pieces, IWL_UCODE_WOWLAN,
831 				     IWL_UCODE_SECTION_DATA, tlv_len);
832 			set_sec_offset(pieces, IWL_UCODE_WOWLAN,
833 				       IWL_UCODE_SECTION_DATA,
834 				       IWLAGN_RTC_DATA_LOWER_BOUND);
835 			break;
836 		case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
837 			if (tlv_len != sizeof(u32))
838 				goto invalid_tlv_len;
839 			capa->standard_phy_calibration_size =
840 					le32_to_cpup((__le32 *)tlv_data);
841 			break;
842 		 case IWL_UCODE_TLV_SEC_RT:
843 			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
844 					    tlv_len);
845 			drv->fw.type = IWL_FW_MVM;
846 			break;
847 		case IWL_UCODE_TLV_SEC_INIT:
848 			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
849 					    tlv_len);
850 			drv->fw.type = IWL_FW_MVM;
851 			break;
852 		case IWL_UCODE_TLV_SEC_WOWLAN:
853 			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
854 					    tlv_len);
855 			drv->fw.type = IWL_FW_MVM;
856 			break;
857 		case IWL_UCODE_TLV_DEF_CALIB:
858 			if (tlv_len != sizeof(struct iwl_tlv_calib_data))
859 				goto invalid_tlv_len;
860 			if (iwl_set_default_calib(drv, tlv_data))
861 				goto tlv_error;
862 			break;
863 		case IWL_UCODE_TLV_PHY_SKU:
864 			if (tlv_len != sizeof(u32))
865 				goto invalid_tlv_len;
866 			drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
867 			drv->fw.valid_tx_ant = (drv->fw.phy_config &
868 						FW_PHY_CFG_TX_CHAIN) >>
869 						FW_PHY_CFG_TX_CHAIN_POS;
870 			drv->fw.valid_rx_ant = (drv->fw.phy_config &
871 						FW_PHY_CFG_RX_CHAIN) >>
872 						FW_PHY_CFG_RX_CHAIN_POS;
873 			break;
874 		 case IWL_UCODE_TLV_SECURE_SEC_RT:
875 			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
876 					    tlv_len);
877 			drv->fw.type = IWL_FW_MVM;
878 			break;
879 		case IWL_UCODE_TLV_SECURE_SEC_INIT:
880 			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
881 					    tlv_len);
882 			drv->fw.type = IWL_FW_MVM;
883 			break;
884 		case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
885 			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
886 					    tlv_len);
887 			drv->fw.type = IWL_FW_MVM;
888 			break;
889 		case IWL_UCODE_TLV_NUM_OF_CPU:
890 			if (tlv_len != sizeof(u32))
891 				goto invalid_tlv_len;
892 			num_of_cpus =
893 				le32_to_cpup((__le32 *)tlv_data);
894 
895 			if (num_of_cpus == 2) {
896 				drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
897 					true;
898 				drv->fw.img[IWL_UCODE_INIT].is_dual_cpus =
899 					true;
900 				drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
901 					true;
902 			} else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
903 				IWL_ERR(drv, "Driver support upto 2 CPUs\n");
904 				return -EINVAL;
905 			}
906 			break;
907 		case IWL_UCODE_TLV_CSCHEME:
908 			if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len))
909 				goto invalid_tlv_len;
910 			break;
911 		case IWL_UCODE_TLV_N_SCAN_CHANNELS:
912 			if (tlv_len != sizeof(u32))
913 				goto invalid_tlv_len;
914 			capa->n_scan_channels =
915 				le32_to_cpup((__le32 *)tlv_data);
916 			break;
917 		case IWL_UCODE_TLV_FW_VERSION: {
918 			__le32 *ptr = (void *)tlv_data;
919 			u32 major, minor;
920 			u8 local_comp;
921 
922 			if (tlv_len != sizeof(u32) * 3)
923 				goto invalid_tlv_len;
924 
925 			major = le32_to_cpup(ptr++);
926 			minor = le32_to_cpup(ptr++);
927 			local_comp = le32_to_cpup(ptr);
928 
929 			snprintf(drv->fw.fw_version,
930 				 sizeof(drv->fw.fw_version), "%u.%u.%u",
931 				 major, minor, local_comp);
932 			break;
933 			}
934 		case IWL_UCODE_TLV_FW_DBG_DEST: {
935 			struct iwl_fw_dbg_dest_tlv *dest = (void *)tlv_data;
936 
937 			if (pieces->dbg_dest_tlv) {
938 				IWL_ERR(drv,
939 					"dbg destination ignored, already exists\n");
940 				break;
941 			}
942 
943 			pieces->dbg_dest_tlv = dest;
944 			IWL_INFO(drv, "Found debug destination: %s\n",
945 				 get_fw_dbg_mode_string(dest->monitor_mode));
946 
947 			drv->fw.dbg_dest_reg_num =
948 				tlv_len - offsetof(struct iwl_fw_dbg_dest_tlv,
949 						   reg_ops);
950 			drv->fw.dbg_dest_reg_num /=
951 				sizeof(drv->fw.dbg_dest_tlv->reg_ops[0]);
952 
953 			break;
954 			}
955 		case IWL_UCODE_TLV_FW_DBG_CONF: {
956 			struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;
957 
958 			if (!pieces->dbg_dest_tlv) {
959 				IWL_ERR(drv,
960 					"Ignore dbg config %d - no destination configured\n",
961 					conf->id);
962 				break;
963 			}
964 
965 			if (conf->id >= ARRAY_SIZE(drv->fw.dbg_conf_tlv)) {
966 				IWL_ERR(drv,
967 					"Skip unknown configuration: %d\n",
968 					conf->id);
969 				break;
970 			}
971 
972 			if (pieces->dbg_conf_tlv[conf->id]) {
973 				IWL_ERR(drv,
974 					"Ignore duplicate dbg config %d\n",
975 					conf->id);
976 				break;
977 			}
978 
979 			if (conf->usniffer)
980 				usniffer_req = true;
981 
982 			IWL_INFO(drv, "Found debug configuration: %d\n",
983 				 conf->id);
984 
985 			pieces->dbg_conf_tlv[conf->id] = conf;
986 			pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
987 			break;
988 			}
989 		case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
990 			struct iwl_fw_dbg_trigger_tlv *trigger =
991 				(void *)tlv_data;
992 			u32 trigger_id = le32_to_cpu(trigger->id);
993 
994 			if (trigger_id >= ARRAY_SIZE(drv->fw.dbg_trigger_tlv)) {
995 				IWL_ERR(drv,
996 					"Skip unknown trigger: %u\n",
997 					trigger->id);
998 				break;
999 			}
1000 
1001 			if (pieces->dbg_trigger_tlv[trigger_id]) {
1002 				IWL_ERR(drv,
1003 					"Ignore duplicate dbg trigger %u\n",
1004 					trigger->id);
1005 				break;
1006 			}
1007 
1008 			IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);
1009 
1010 			pieces->dbg_trigger_tlv[trigger_id] = trigger;
1011 			pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
1012 			break;
1013 			}
1014 		case IWL_UCODE_TLV_SEC_RT_USNIFFER:
1015 			*usniffer_images = true;
1016 			iwl_store_ucode_sec(pieces, tlv_data,
1017 					    IWL_UCODE_REGULAR_USNIFFER,
1018 					    tlv_len);
1019 			break;
1020 		case IWL_UCODE_TLV_PAGING:
1021 			if (tlv_len != sizeof(u32))
1022 				goto invalid_tlv_len;
1023 			paging_mem_size = le32_to_cpup((__le32 *)tlv_data);
1024 
1025 			IWL_DEBUG_FW(drv,
1026 				     "Paging: paging enabled (size = %u bytes)\n",
1027 				     paging_mem_size);
1028 
1029 			if (paging_mem_size > MAX_PAGING_IMAGE_SIZE) {
1030 				IWL_ERR(drv,
1031 					"Paging: driver supports up to %lu bytes for paging image\n",
1032 					MAX_PAGING_IMAGE_SIZE);
1033 				return -EINVAL;
1034 			}
1035 
1036 			if (paging_mem_size & (FW_PAGING_SIZE - 1)) {
1037 				IWL_ERR(drv,
1038 					"Paging: image isn't multiple %lu\n",
1039 					FW_PAGING_SIZE);
1040 				return -EINVAL;
1041 			}
1042 
1043 			drv->fw.img[IWL_UCODE_REGULAR].paging_mem_size =
1044 				paging_mem_size;
1045 			usniffer_img = IWL_UCODE_REGULAR_USNIFFER;
1046 			drv->fw.img[usniffer_img].paging_mem_size =
1047 				paging_mem_size;
1048 			break;
1049 		case IWL_UCODE_TLV_SDIO_ADMA_ADDR:
1050 			if (tlv_len != sizeof(u32))
1051 				goto invalid_tlv_len;
1052 			drv->fw.sdio_adma_addr =
1053 				le32_to_cpup((__le32 *)tlv_data);
1054 			break;
1055 		case IWL_UCODE_TLV_FW_GSCAN_CAPA:
1056 			/*
1057 			 * Don't return an error in case of a shorter tlv_len
1058 			 * to enable loading of FW that has an old format
1059 			 * of GSCAN capabilities TLV.
1060 			 */
1061 			if (tlv_len < sizeof(struct iwl_fw_gscan_capabilities))
1062 				break;
1063 
1064 			iwl_store_gscan_capa(&drv->fw, tlv_data, tlv_len);
1065 			gscan_capa = true;
1066 			break;
1067 		case IWL_UCODE_TLV_FW_MEM_SEG: {
1068 			struct iwl_fw_dbg_mem_seg_tlv *dbg_mem =
1069 				(void *)tlv_data;
1070 			u32 type;
1071 			size_t size;
1072 			struct iwl_fw_dbg_mem_seg_tlv *n;
1073 
1074 			if (tlv_len != (sizeof(*dbg_mem)))
1075 				goto invalid_tlv_len;
1076 
1077 			type = le32_to_cpu(dbg_mem->data_type);
1078 
1079 			IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n",
1080 				       dbg_mem->data_type);
1081 
1082 			switch (type & FW_DBG_MEM_TYPE_MASK) {
1083 			case FW_DBG_MEM_TYPE_REGULAR:
1084 			case FW_DBG_MEM_TYPE_PRPH:
1085 				/* we know how to handle these */
1086 				break;
1087 			default:
1088 				IWL_ERR(drv,
1089 					"Found debug memory segment with invalid type: 0x%x\n",
1090 					type);
1091 				return -EINVAL;
1092 			}
1093 
1094 			size = sizeof(*pieces->dbg_mem_tlv) *
1095 			       (pieces->n_dbg_mem_tlv + 1);
1096 			n = krealloc(pieces->dbg_mem_tlv, size, GFP_KERNEL);
1097 			if (!n)
1098 				return -ENOMEM;
1099 			pieces->dbg_mem_tlv = n;
1100 			pieces->dbg_mem_tlv[pieces->n_dbg_mem_tlv] = *dbg_mem;
1101 			pieces->n_dbg_mem_tlv++;
1102 			break;
1103 			}
1104 		default:
1105 			IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
1106 			break;
1107 		}
1108 	}
1109 
1110 	if (!fw_has_capa(capa, IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED) &&
1111 	    usniffer_req && !*usniffer_images) {
1112 		IWL_ERR(drv,
1113 			"user selected to work with usniffer but usniffer image isn't available in ucode package\n");
1114 		return -EINVAL;
1115 	}
1116 
1117 	if (len) {
1118 		IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
1119 		iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
1120 		return -EINVAL;
1121 	}
1122 
1123 	/*
1124 	 * If ucode advertises that it supports GSCAN but GSCAN
1125 	 * capabilities TLV is not present, or if it has an old format,
1126 	 * warn and continue without GSCAN.
1127 	 */
1128 	if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT) &&
1129 	    !gscan_capa) {
1130 		IWL_DEBUG_INFO(drv,
1131 			       "GSCAN is supported but capabilities TLV is unavailable\n");
1132 		__clear_bit((__force long)IWL_UCODE_TLV_CAPA_GSCAN_SUPPORT,
1133 			    capa->_capa);
1134 	}
1135 
1136 	return 0;
1137 
1138  invalid_tlv_len:
1139 	IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1140  tlv_error:
1141 	iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
1142 
1143 	return -EINVAL;
1144 }
1145 
1146 static int iwl_alloc_ucode(struct iwl_drv *drv,
1147 			   struct iwl_firmware_pieces *pieces,
1148 			   enum iwl_ucode_type type)
1149 {
1150 	int i;
1151 	struct fw_desc *sec;
1152 
1153 	sec = kcalloc(pieces->img[type].sec_counter, sizeof(*sec), GFP_KERNEL);
1154 	if (!sec)
1155 		return -ENOMEM;
1156 	drv->fw.img[type].sec = sec;
1157 	drv->fw.img[type].num_sec = pieces->img[type].sec_counter;
1158 
1159 	for (i = 0; i < pieces->img[type].sec_counter; i++)
1160 		if (iwl_alloc_fw_desc(drv, &sec[i], get_sec(pieces, type, i)))
1161 			return -ENOMEM;
1162 
1163 	return 0;
1164 }
1165 
1166 static int validate_sec_sizes(struct iwl_drv *drv,
1167 			      struct iwl_firmware_pieces *pieces,
1168 			      const struct iwl_cfg *cfg)
1169 {
1170 	IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %zd\n",
1171 		get_sec_size(pieces, IWL_UCODE_REGULAR,
1172 			     IWL_UCODE_SECTION_INST));
1173 	IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %zd\n",
1174 		get_sec_size(pieces, IWL_UCODE_REGULAR,
1175 			     IWL_UCODE_SECTION_DATA));
1176 	IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %zd\n",
1177 		get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
1178 	IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %zd\n",
1179 		get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));
1180 
1181 	/* Verify that uCode images will fit in card's SRAM. */
1182 	if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
1183 	    cfg->max_inst_size) {
1184 		IWL_ERR(drv, "uCode instr len %zd too large to fit in\n",
1185 			get_sec_size(pieces, IWL_UCODE_REGULAR,
1186 				     IWL_UCODE_SECTION_INST));
1187 		return -1;
1188 	}
1189 
1190 	if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
1191 	    cfg->max_data_size) {
1192 		IWL_ERR(drv, "uCode data len %zd too large to fit in\n",
1193 			get_sec_size(pieces, IWL_UCODE_REGULAR,
1194 				     IWL_UCODE_SECTION_DATA));
1195 		return -1;
1196 	}
1197 
1198 	if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
1199 	     cfg->max_inst_size) {
1200 		IWL_ERR(drv, "uCode init instr len %zd too large to fit in\n",
1201 			get_sec_size(pieces, IWL_UCODE_INIT,
1202 				     IWL_UCODE_SECTION_INST));
1203 		return -1;
1204 	}
1205 
1206 	if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
1207 	    cfg->max_data_size) {
1208 		IWL_ERR(drv, "uCode init data len %zd too large to fit in\n",
1209 			get_sec_size(pieces, IWL_UCODE_REGULAR,
1210 				     IWL_UCODE_SECTION_DATA));
1211 		return -1;
1212 	}
1213 	return 0;
1214 }
1215 
1216 static struct iwl_op_mode *
1217 _iwl_op_mode_start(struct iwl_drv *drv, struct iwlwifi_opmode_table *op)
1218 {
1219 	const struct iwl_op_mode_ops *ops = op->ops;
1220 	struct dentry *dbgfs_dir = NULL;
1221 	struct iwl_op_mode *op_mode = NULL;
1222 
1223 #ifdef CONFIG_IWLWIFI_DEBUGFS
1224 	drv->dbgfs_op_mode = debugfs_create_dir(op->name,
1225 						drv->dbgfs_drv);
1226 	if (!drv->dbgfs_op_mode) {
1227 		IWL_ERR(drv,
1228 			"failed to create opmode debugfs directory\n");
1229 		return op_mode;
1230 	}
1231 	dbgfs_dir = drv->dbgfs_op_mode;
1232 #endif
1233 
1234 	op_mode = ops->start(drv->trans, drv->trans->cfg, &drv->fw, dbgfs_dir);
1235 
1236 #ifdef CONFIG_IWLWIFI_DEBUGFS
1237 	if (!op_mode) {
1238 		debugfs_remove_recursive(drv->dbgfs_op_mode);
1239 		drv->dbgfs_op_mode = NULL;
1240 	}
1241 #endif
1242 
1243 	return op_mode;
1244 }
1245 
1246 static void _iwl_op_mode_stop(struct iwl_drv *drv)
1247 {
1248 	/* op_mode can be NULL if its start failed */
1249 	if (drv->op_mode) {
1250 		iwl_op_mode_stop(drv->op_mode);
1251 		drv->op_mode = NULL;
1252 
1253 #ifdef CONFIG_IWLWIFI_DEBUGFS
1254 		debugfs_remove_recursive(drv->dbgfs_op_mode);
1255 		drv->dbgfs_op_mode = NULL;
1256 #endif
1257 	}
1258 }
1259 
1260 /**
1261  * iwl_req_fw_callback - callback when firmware was loaded
1262  *
1263  * If loaded successfully, copies the firmware into buffers
1264  * for the card to fetch (via DMA).
1265  */
1266 static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
1267 {
1268 	struct iwl_drv *drv = context;
1269 	struct iwl_fw *fw = &drv->fw;
1270 	struct iwl_ucode_header *ucode;
1271 	struct iwlwifi_opmode_table *op;
1272 	int err;
1273 	struct iwl_firmware_pieces *pieces;
1274 	const unsigned int api_max = drv->trans->cfg->ucode_api_max;
1275 	const unsigned int api_min = drv->trans->cfg->ucode_api_min;
1276 	size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
1277 	u32 api_ver;
1278 	int i;
1279 	bool load_module = false;
1280 	bool usniffer_images = false;
1281 
1282 	fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
1283 	fw->ucode_capa.standard_phy_calibration_size =
1284 			IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1285 	fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
1286 
1287 	pieces = kzalloc(sizeof(*pieces), GFP_KERNEL);
1288 	if (!pieces)
1289 		goto out_free_fw;
1290 
1291 	if (!ucode_raw)
1292 		goto try_again;
1293 
1294 	IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
1295 		       drv->firmware_name, ucode_raw->size);
1296 
1297 	/* Make sure that we got at least the API version number */
1298 	if (ucode_raw->size < 4) {
1299 		IWL_ERR(drv, "File size way too small!\n");
1300 		goto try_again;
1301 	}
1302 
1303 	/* Data from ucode file:  header followed by uCode images */
1304 	ucode = (struct iwl_ucode_header *)ucode_raw->data;
1305 
1306 	if (ucode->ver)
1307 		err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
1308 	else
1309 		err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
1310 					     &fw->ucode_capa, &usniffer_images);
1311 
1312 	if (err)
1313 		goto try_again;
1314 
1315 	if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION))
1316 		api_ver = drv->fw.ucode_ver;
1317 	else
1318 		api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
1319 
1320 	/*
1321 	 * api_ver should match the api version forming part of the
1322 	 * firmware filename ... but we don't check for that and only rely
1323 	 * on the API version read from firmware header from here on forward
1324 	 */
1325 	if (api_ver < api_min || api_ver > api_max) {
1326 		IWL_ERR(drv,
1327 			"Driver unable to support your firmware API. "
1328 			"Driver supports v%u, firmware is v%u.\n",
1329 			api_max, api_ver);
1330 		goto try_again;
1331 	}
1332 
1333 	/*
1334 	 * In mvm uCode there is no difference between data and instructions
1335 	 * sections.
1336 	 */
1337 	if (fw->type == IWL_FW_DVM && validate_sec_sizes(drv, pieces,
1338 							 drv->trans->cfg))
1339 		goto try_again;
1340 
1341 	/* Allocate ucode buffers for card's bus-master loading ... */
1342 
1343 	/* Runtime instructions and 2 copies of data:
1344 	 * 1) unmodified from disk
1345 	 * 2) backup cache for save/restore during power-downs */
1346 	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
1347 		if (iwl_alloc_ucode(drv, pieces, i))
1348 			goto out_free_fw;
1349 
1350 	if (pieces->dbg_dest_tlv) {
1351 		drv->fw.dbg_dest_tlv =
1352 			kmemdup(pieces->dbg_dest_tlv,
1353 				sizeof(*pieces->dbg_dest_tlv) +
1354 				sizeof(pieces->dbg_dest_tlv->reg_ops[0]) *
1355 				drv->fw.dbg_dest_reg_num, GFP_KERNEL);
1356 
1357 		if (!drv->fw.dbg_dest_tlv)
1358 			goto out_free_fw;
1359 	}
1360 
1361 	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_conf_tlv); i++) {
1362 		if (pieces->dbg_conf_tlv[i]) {
1363 			drv->fw.dbg_conf_tlv_len[i] =
1364 				pieces->dbg_conf_tlv_len[i];
1365 			drv->fw.dbg_conf_tlv[i] =
1366 				kmemdup(pieces->dbg_conf_tlv[i],
1367 					drv->fw.dbg_conf_tlv_len[i],
1368 					GFP_KERNEL);
1369 			if (!drv->fw.dbg_conf_tlv[i])
1370 				goto out_free_fw;
1371 		}
1372 	}
1373 
1374 	memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));
1375 
1376 	trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
1377 		sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
1378 	trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
1379 	trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
1380 		sizeof(struct iwl_fw_dbg_trigger_cmd);
1381 	trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
1382 		sizeof(struct iwl_fw_dbg_trigger_mlme);
1383 	trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
1384 		sizeof(struct iwl_fw_dbg_trigger_stats);
1385 	trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
1386 		sizeof(struct iwl_fw_dbg_trigger_low_rssi);
1387 	trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
1388 		sizeof(struct iwl_fw_dbg_trigger_txq_timer);
1389 	trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
1390 		sizeof(struct iwl_fw_dbg_trigger_time_event);
1391 	trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
1392 		sizeof(struct iwl_fw_dbg_trigger_ba);
1393 	trigger_tlv_sz[FW_DBG_TRIGGER_TDLS] =
1394 		sizeof(struct iwl_fw_dbg_trigger_tdls);
1395 
1396 	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++) {
1397 		if (pieces->dbg_trigger_tlv[i]) {
1398 			/*
1399 			 * If the trigger isn't long enough, WARN and exit.
1400 			 * Someone is trying to debug something and he won't
1401 			 * be able to catch the bug he is trying to chase.
1402 			 * We'd better be noisy to be sure he knows what's
1403 			 * going on.
1404 			 */
1405 			if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
1406 				    (trigger_tlv_sz[i] +
1407 				     sizeof(struct iwl_fw_dbg_trigger_tlv))))
1408 				goto out_free_fw;
1409 			drv->fw.dbg_trigger_tlv_len[i] =
1410 				pieces->dbg_trigger_tlv_len[i];
1411 			drv->fw.dbg_trigger_tlv[i] =
1412 				kmemdup(pieces->dbg_trigger_tlv[i],
1413 					drv->fw.dbg_trigger_tlv_len[i],
1414 					GFP_KERNEL);
1415 			if (!drv->fw.dbg_trigger_tlv[i])
1416 				goto out_free_fw;
1417 		}
1418 	}
1419 
1420 	/* Now that we can no longer fail, copy information */
1421 
1422 	drv->fw.dbg_mem_tlv = pieces->dbg_mem_tlv;
1423 	pieces->dbg_mem_tlv = NULL;
1424 	drv->fw.n_dbg_mem_tlv = pieces->n_dbg_mem_tlv;
1425 
1426 	/*
1427 	 * The (size - 16) / 12 formula is based on the information recorded
1428 	 * for each event, which is of mode 1 (including timestamp) for all
1429 	 * new microcodes that include this information.
1430 	 */
1431 	fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
1432 	if (pieces->init_evtlog_size)
1433 		fw->init_evtlog_size = (pieces->init_evtlog_size - 16)/12;
1434 	else
1435 		fw->init_evtlog_size =
1436 			drv->trans->cfg->base_params->max_event_log_size;
1437 	fw->init_errlog_ptr = pieces->init_errlog_ptr;
1438 	fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
1439 	if (pieces->inst_evtlog_size)
1440 		fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16)/12;
1441 	else
1442 		fw->inst_evtlog_size =
1443 			drv->trans->cfg->base_params->max_event_log_size;
1444 	fw->inst_errlog_ptr = pieces->inst_errlog_ptr;
1445 
1446 	/*
1447 	 * figure out the offset of chain noise reset and gain commands
1448 	 * base on the size of standard phy calibration commands table size
1449 	 */
1450 	if (fw->ucode_capa.standard_phy_calibration_size >
1451 	    IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1452 		fw->ucode_capa.standard_phy_calibration_size =
1453 			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1454 
1455 	/* We have our copies now, allow OS release its copies */
1456 	release_firmware(ucode_raw);
1457 
1458 	mutex_lock(&iwlwifi_opmode_table_mtx);
1459 	switch (fw->type) {
1460 	case IWL_FW_DVM:
1461 		op = &iwlwifi_opmode_table[DVM_OP_MODE];
1462 		break;
1463 	default:
1464 		WARN(1, "Invalid fw type %d\n", fw->type);
1465 	case IWL_FW_MVM:
1466 		op = &iwlwifi_opmode_table[MVM_OP_MODE];
1467 		break;
1468 	}
1469 
1470 	IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
1471 		 drv->fw.fw_version, op->name);
1472 
1473 	/* add this device to the list of devices using this op_mode */
1474 	list_add_tail(&drv->list, &op->drv);
1475 
1476 	if (op->ops) {
1477 		drv->op_mode = _iwl_op_mode_start(drv, op);
1478 
1479 		if (!drv->op_mode) {
1480 			mutex_unlock(&iwlwifi_opmode_table_mtx);
1481 			goto out_unbind;
1482 		}
1483 	} else {
1484 		load_module = true;
1485 	}
1486 	mutex_unlock(&iwlwifi_opmode_table_mtx);
1487 
1488 	/*
1489 	 * Complete the firmware request last so that
1490 	 * a driver unbind (stop) doesn't run while we
1491 	 * are doing the start() above.
1492 	 */
1493 	complete(&drv->request_firmware_complete);
1494 
1495 	/*
1496 	 * Load the module last so we don't block anything
1497 	 * else from proceeding if the module fails to load
1498 	 * or hangs loading.
1499 	 */
1500 	if (load_module) {
1501 		request_module("%s", op->name);
1502 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
1503 		if (err)
1504 			IWL_ERR(drv,
1505 				"failed to load module %s (error %d), is dynamic loading enabled?\n",
1506 				op->name, err);
1507 #endif
1508 	}
1509 	goto free;
1510 
1511  try_again:
1512 	/* try next, if any */
1513 	release_firmware(ucode_raw);
1514 	if (iwl_request_firmware(drv, false))
1515 		goto out_unbind;
1516 	goto free;
1517 
1518  out_free_fw:
1519 	iwl_dealloc_ucode(drv);
1520 	release_firmware(ucode_raw);
1521  out_unbind:
1522 	complete(&drv->request_firmware_complete);
1523 	device_release_driver(drv->trans->dev);
1524  free:
1525 	if (pieces) {
1526 		for (i = 0; i < ARRAY_SIZE(pieces->img); i++)
1527 			kfree(pieces->img[i].sec);
1528 		kfree(pieces->dbg_mem_tlv);
1529 		kfree(pieces);
1530 	}
1531 }
1532 
1533 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
1534 {
1535 	struct iwl_drv *drv;
1536 	int ret;
1537 
1538 	drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1539 	if (!drv) {
1540 		ret = -ENOMEM;
1541 		goto err;
1542 	}
1543 
1544 	drv->trans = trans;
1545 	drv->dev = trans->dev;
1546 
1547 	init_completion(&drv->request_firmware_complete);
1548 	INIT_LIST_HEAD(&drv->list);
1549 
1550 #ifdef CONFIG_IWLWIFI_DEBUGFS
1551 	/* Create the device debugfs entries. */
1552 	drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
1553 					    iwl_dbgfs_root);
1554 
1555 	if (!drv->dbgfs_drv) {
1556 		IWL_ERR(drv, "failed to create debugfs directory\n");
1557 		ret = -ENOMEM;
1558 		goto err_free_drv;
1559 	}
1560 
1561 	/* Create transport layer debugfs dir */
1562 	drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
1563 
1564 	if (!drv->trans->dbgfs_dir) {
1565 		IWL_ERR(drv, "failed to create transport debugfs directory\n");
1566 		ret = -ENOMEM;
1567 		goto err_free_dbgfs;
1568 	}
1569 #endif
1570 
1571 	ret = iwl_request_firmware(drv, true);
1572 	if (ret) {
1573 		IWL_ERR(trans, "Couldn't request the fw\n");
1574 		goto err_fw;
1575 	}
1576 
1577 	return drv;
1578 
1579 err_fw:
1580 #ifdef CONFIG_IWLWIFI_DEBUGFS
1581 err_free_dbgfs:
1582 	debugfs_remove_recursive(drv->dbgfs_drv);
1583 err_free_drv:
1584 #endif
1585 	kfree(drv);
1586 err:
1587 	return ERR_PTR(ret);
1588 }
1589 
1590 void iwl_drv_stop(struct iwl_drv *drv)
1591 {
1592 	wait_for_completion(&drv->request_firmware_complete);
1593 
1594 	_iwl_op_mode_stop(drv);
1595 
1596 	iwl_dealloc_ucode(drv);
1597 
1598 	mutex_lock(&iwlwifi_opmode_table_mtx);
1599 	/*
1600 	 * List is empty (this item wasn't added)
1601 	 * when firmware loading failed -- in that
1602 	 * case we can't remove it from any list.
1603 	 */
1604 	if (!list_empty(&drv->list))
1605 		list_del(&drv->list);
1606 	mutex_unlock(&iwlwifi_opmode_table_mtx);
1607 
1608 #ifdef CONFIG_IWLWIFI_DEBUGFS
1609 	debugfs_remove_recursive(drv->dbgfs_drv);
1610 #endif
1611 
1612 	kfree(drv);
1613 }
1614 
1615 
1616 /* shared module parameters */
1617 struct iwl_mod_params iwlwifi_mod_params = {
1618 	.fw_restart = true,
1619 	.bt_coex_active = true,
1620 	.power_level = IWL_POWER_INDEX_1,
1621 	.d0i3_disable = true,
1622 	.d0i3_timeout = 1000,
1623 	.uapsd_disable = IWL_DISABLE_UAPSD_BSS | IWL_DISABLE_UAPSD_P2P_CLIENT,
1624 	/* the rest are 0 by default */
1625 };
1626 IWL_EXPORT_SYMBOL(iwlwifi_mod_params);
1627 
1628 int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
1629 {
1630 	int i;
1631 	struct iwl_drv *drv;
1632 	struct iwlwifi_opmode_table *op;
1633 
1634 	mutex_lock(&iwlwifi_opmode_table_mtx);
1635 	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1636 		op = &iwlwifi_opmode_table[i];
1637 		if (strcmp(op->name, name))
1638 			continue;
1639 		op->ops = ops;
1640 		/* TODO: need to handle exceptional case */
1641 		list_for_each_entry(drv, &op->drv, list)
1642 			drv->op_mode = _iwl_op_mode_start(drv, op);
1643 
1644 		mutex_unlock(&iwlwifi_opmode_table_mtx);
1645 		return 0;
1646 	}
1647 	mutex_unlock(&iwlwifi_opmode_table_mtx);
1648 	return -EIO;
1649 }
1650 IWL_EXPORT_SYMBOL(iwl_opmode_register);
1651 
1652 void iwl_opmode_deregister(const char *name)
1653 {
1654 	int i;
1655 	struct iwl_drv *drv;
1656 
1657 	mutex_lock(&iwlwifi_opmode_table_mtx);
1658 	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
1659 		if (strcmp(iwlwifi_opmode_table[i].name, name))
1660 			continue;
1661 		iwlwifi_opmode_table[i].ops = NULL;
1662 
1663 		/* call the stop routine for all devices */
1664 		list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
1665 			_iwl_op_mode_stop(drv);
1666 
1667 		mutex_unlock(&iwlwifi_opmode_table_mtx);
1668 		return;
1669 	}
1670 	mutex_unlock(&iwlwifi_opmode_table_mtx);
1671 }
1672 IWL_EXPORT_SYMBOL(iwl_opmode_deregister);
1673 
1674 static int __init iwl_drv_init(void)
1675 {
1676 	int i;
1677 
1678 	mutex_init(&iwlwifi_opmode_table_mtx);
1679 
1680 	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++)
1681 		INIT_LIST_HEAD(&iwlwifi_opmode_table[i].drv);
1682 
1683 	pr_info(DRV_DESCRIPTION "\n");
1684 	pr_info(DRV_COPYRIGHT "\n");
1685 
1686 #ifdef CONFIG_IWLWIFI_DEBUGFS
1687 	/* Create the root of iwlwifi debugfs subsystem. */
1688 	iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);
1689 
1690 	if (!iwl_dbgfs_root)
1691 		return -EFAULT;
1692 #endif
1693 
1694 	return iwl_pci_register_driver();
1695 }
1696 module_init(iwl_drv_init);
1697 
1698 static void __exit iwl_drv_exit(void)
1699 {
1700 	iwl_pci_unregister_driver();
1701 
1702 #ifdef CONFIG_IWLWIFI_DEBUGFS
1703 	debugfs_remove_recursive(iwl_dbgfs_root);
1704 #endif
1705 }
1706 module_exit(iwl_drv_exit);
1707 
1708 #ifdef CONFIG_IWLWIFI_DEBUG
1709 module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
1710 		   S_IRUGO | S_IWUSR);
1711 MODULE_PARM_DESC(debug, "debug output mask");
1712 #endif
1713 
1714 module_param_named(swcrypto, iwlwifi_mod_params.swcrypto, int, S_IRUGO);
1715 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1716 module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
1717 MODULE_PARM_DESC(11n_disable,
1718 	"disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
1719 module_param_named(amsdu_size, iwlwifi_mod_params.amsdu_size,
1720 		   int, S_IRUGO);
1721 MODULE_PARM_DESC(amsdu_size,
1722 		 "amsdu size 0: 12K for multi Rx queue devices, 4K for other devices 1:4K 2:8K 3:12K (default 0)");
1723 module_param_named(fw_restart, iwlwifi_mod_params.fw_restart, bool, S_IRUGO);
1724 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");
1725 
1726 module_param_named(antenna_coupling, iwlwifi_mod_params.antenna_coupling,
1727 		   int, S_IRUGO);
1728 MODULE_PARM_DESC(antenna_coupling,
1729 		 "specify antenna coupling in dB (default: 0 dB)");
1730 
1731 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
1732 MODULE_PARM_DESC(nvm_file, "NVM file name");
1733 
1734 module_param_named(d0i3_disable, iwlwifi_mod_params.d0i3_disable,
1735 		   bool, S_IRUGO);
1736 MODULE_PARM_DESC(d0i3_disable, "disable d0i3 functionality (default: Y)");
1737 
1738 module_param_named(lar_disable, iwlwifi_mod_params.lar_disable,
1739 		   bool, S_IRUGO);
1740 MODULE_PARM_DESC(lar_disable, "disable LAR functionality (default: N)");
1741 
1742 module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable,
1743 		   uint, S_IRUGO | S_IWUSR);
1744 MODULE_PARM_DESC(uapsd_disable,
1745 		 "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");
1746 
1747 /*
1748  * set bt_coex_active to true, uCode will do kill/defer
1749  * every time the priority line is asserted (BT is sending signals on the
1750  * priority line in the PCIx).
1751  * set bt_coex_active to false, uCode will ignore the BT activity and
1752  * perform the normal operation
1753  *
1754  * User might experience transmit issue on some platform due to WiFi/BT
1755  * co-exist problem. The possible behaviors are:
1756  *   Able to scan and finding all the available AP
1757  *   Not able to associate with any AP
1758  * On those platforms, WiFi communication can be restored by set
1759  * "bt_coex_active" module parameter to "false"
1760  *
1761  * default: bt_coex_active = true (BT_COEX_ENABLE)
1762  */
1763 module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
1764 		bool, S_IRUGO);
1765 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1766 
1767 module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
1768 MODULE_PARM_DESC(led_mode, "0=system default, "
1769 		"1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1770 
1771 module_param_named(power_save, iwlwifi_mod_params.power_save,
1772 		bool, S_IRUGO);
1773 MODULE_PARM_DESC(power_save,
1774 		 "enable WiFi power management (default: disable)");
1775 
1776 module_param_named(power_level, iwlwifi_mod_params.power_level,
1777 		int, S_IRUGO);
1778 MODULE_PARM_DESC(power_level,
1779 		 "default power save level (range from 1 - 5, default: 1)");
1780 
1781 module_param_named(fw_monitor, iwlwifi_mod_params.fw_monitor, bool, S_IRUGO);
1782 MODULE_PARM_DESC(fw_monitor,
1783 		 "firmware monitor - to debug FW (default: false - needs lots of memory)");
1784 
1785 module_param_named(d0i3_timeout, iwlwifi_mod_params.d0i3_timeout,
1786 		   uint, S_IRUGO);
1787 MODULE_PARM_DESC(d0i3_timeout, "Timeout to D0i3 entry when idle (ms)");
1788 
1789 module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool,
1790 		   S_IRUGO);
1791 MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities (default: false)");
1792