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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) 2017 Intel Deutschland GmbH
9 * Copyright (C) 2019 - 2020 Intel Corporation
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 * The full GNU General Public License is included in this distribution
21 * in the file called COPYING.
22 *
23 * Contact Information:
24 * Intel Linux Wireless <linuxwifi@intel.com>
25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *
27 * BSD LICENSE
28 *
29 * Copyright(c) 2017 Intel Deutschland GmbH
30 * Copyright (C) 2019 - 2020 Intel Corporation
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 *
37 * * Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * * Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in
41 * the documentation and/or other materials provided with the
42 * distribution.
43 * * Neither the name Intel Corporation nor the names of its
44 * contributors may be used to endorse or promote products derived
45 * from this software without specific prior written permission.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
50 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
51 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 *
59 *****************************************************************************/
60
61#include <linux/uuid.h>
62#include "iwl-drv.h"
63#include "iwl-debug.h"
64#include "acpi.h"
65#include "fw/runtime.h"
66
67static const guid_t intel_wifi_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6,
68 0xA5, 0xB3, 0x1F, 0x73,
69 0x8E, 0x28, 0x5A, 0xDE);
70
71static int iwl_acpi_get_handle(struct device *dev, acpi_string method,
72 acpi_handle *ret_handle)
73{
74 acpi_handle root_handle;
75 acpi_status status;
76
77 root_handle = ACPI_HANDLE(dev);
78 if (!root_handle) {
79 IWL_DEBUG_DEV_RADIO(dev,
80 "ACPI: Could not retrieve root port handle\n");
81 return -ENOENT;
82 }
83
84 status = acpi_get_handle(root_handle, method, ret_handle);
85 if (ACPI_FAILURE(status)) {
86 IWL_DEBUG_DEV_RADIO(dev,
87 "ACPI: %s method not found\n", method);
88 return -ENOENT;
89 }
90 return 0;
91}
92
93void *iwl_acpi_get_object(struct device *dev, acpi_string method)
94{
95 struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
96 acpi_handle handle;
97 acpi_status status;
98 int ret;
99
100 ret = iwl_acpi_get_handle(dev, method, &handle);
101 if (ret)
102 return ERR_PTR(-ENOENT);
103
104 /* Call the method with no arguments */
105 status = acpi_evaluate_object(handle, NULL, NULL, &buf);
106 if (ACPI_FAILURE(status)) {
107 IWL_DEBUG_DEV_RADIO(dev,
108 "ACPI: %s method invocation failed (status: 0x%x)\n",
109 method, status);
110 return ERR_PTR(-ENOENT);
111 }
112 return buf.pointer;
113}
114IWL_EXPORT_SYMBOL(iwl_acpi_get_object);
115
116/**
117* Generic function for evaluating a method defined in the device specific
118* method (DSM) interface. The returned acpi object must be freed by calling
119* function.
120*/
121void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func,
122 union acpi_object *args)
123{
124 union acpi_object *obj;
125
126 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_wifi_guid, rev, func,
127 args);
128 if (!obj) {
129 IWL_DEBUG_DEV_RADIO(dev,
130 "ACPI: DSM method invocation failed (rev: %d, func:%d)\n",
131 rev, func);
132 return ERR_PTR(-ENOENT);
133 }
134 return obj;
135}
136
137/**
138 * Evaluate a DSM with no arguments and a single u8 return value (inside a
139 * buffer object), verify and return that value.
140 */
141int iwl_acpi_get_dsm_u8(struct device *dev, int rev, int func)
142{
143 union acpi_object *obj;
144 int ret;
145
146 obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL);
147 if (IS_ERR(obj))
148 return -ENOENT;
149
150 if (obj->type != ACPI_TYPE_BUFFER) {
151 IWL_DEBUG_DEV_RADIO(dev,
152 "ACPI: DSM method did not return a valid object, type=%d\n",
153 obj->type);
154 ret = -EINVAL;
155 goto out;
156 }
157
158 if (obj->buffer.length != sizeof(u8)) {
159 IWL_DEBUG_DEV_RADIO(dev,
160 "ACPI: DSM method returned invalid buffer, length=%d\n",
161 obj->buffer.length);
162 ret = -EINVAL;
163 goto out;
164 }
165
166 ret = obj->buffer.pointer[0];
167 IWL_DEBUG_DEV_RADIO(dev,
168 "ACPI: DSM method evaluated: func=%d, ret=%d\n",
169 func, ret);
170out:
171 ACPI_FREE(obj);
172 return ret;
173}
174IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u8);
175
176union acpi_object *iwl_acpi_get_wifi_pkg(struct device *dev,
177 union acpi_object *data,
178 int data_size, int *tbl_rev)
179{
180 int i;
181 union acpi_object *wifi_pkg;
182
183 /*
184 * We need at least one entry in the wifi package that
185 * describes the domain, and one more entry, otherwise there's
186 * no point in reading it.
187 */
188 if (WARN_ON_ONCE(data_size < 2))
189 return ERR_PTR(-EINVAL);
190
191 /*
192 * We need at least two packages, one for the revision and one
193 * for the data itself. Also check that the revision is valid
194 * (i.e. it is an integer smaller than 2, as we currently support only
195 * 2 revisions).
196 */
197 if (data->type != ACPI_TYPE_PACKAGE ||
198 data->package.count < 2 ||
199 data->package.elements[0].type != ACPI_TYPE_INTEGER ||
200 data->package.elements[0].integer.value > 1) {
201 IWL_DEBUG_DEV_RADIO(dev, "Unsupported packages structure\n");
202 return ERR_PTR(-EINVAL);
203 }
204
205 *tbl_rev = data->package.elements[0].integer.value;
206
207 /* loop through all the packages to find the one for WiFi */
208 for (i = 1; i < data->package.count; i++) {
209 union acpi_object *domain;
210
211 wifi_pkg = &data->package.elements[i];
212
213 /* skip entries that are not a package with the right size */
214 if (wifi_pkg->type != ACPI_TYPE_PACKAGE ||
215 wifi_pkg->package.count != data_size)
216 continue;
217
218 domain = &wifi_pkg->package.elements[0];
219 if (domain->type == ACPI_TYPE_INTEGER &&
220 domain->integer.value == ACPI_WIFI_DOMAIN)
221 goto found;
222 }
223
224 return ERR_PTR(-ENOENT);
225
226found:
227 return wifi_pkg;
228}
229IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg);
230
231int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt,
232 __le32 *black_list_array,
233 int *black_list_size)
234{
235 union acpi_object *wifi_pkg, *data;
236 int ret, tbl_rev, i;
237 bool enabled;
238
239 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);
240 if (IS_ERR(data))
241 return PTR_ERR(data);
242
243 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
244 ACPI_WTAS_WIFI_DATA_SIZE,
245 &tbl_rev);
246 if (IS_ERR(wifi_pkg)) {
247 ret = PTR_ERR(wifi_pkg);
248 goto out_free;
249 }
250
251 if (wifi_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
252 tbl_rev != 0) {
253 ret = -EINVAL;
254 goto out_free;
255 }
256
257 enabled = !!wifi_pkg->package.elements[0].integer.value;
258
259 if (!enabled) {
260 *black_list_size = -1;
261 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");
262 ret = 0;
263 goto out_free;
264 }
265
266 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
267 wifi_pkg->package.elements[1].integer.value >
268 APCI_WTAS_BLACK_LIST_MAX) {
269 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",
270 wifi_pkg->package.elements[1].integer.value);
271 ret = -EINVAL;
272 goto out_free;
273 }
274 *black_list_size = wifi_pkg->package.elements[1].integer.value;
275
276 IWL_DEBUG_RADIO(fwrt, "TAS array size %d\n", *black_list_size);
277 if (*black_list_size > APCI_WTAS_BLACK_LIST_MAX) {
278 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n",
279 *black_list_size);
280 ret = -EINVAL;
281 goto out_free;
282 }
283
284 for (i = 0; i < *black_list_size; i++) {
285 u32 country;
286
287 if (wifi_pkg->package.elements[2 + i].type !=
288 ACPI_TYPE_INTEGER) {
289 IWL_DEBUG_RADIO(fwrt,
290 "TAS invalid array elem %d\n", 2 + i);
291 ret = -EINVAL;
292 goto out_free;
293 }
294
295 country = wifi_pkg->package.elements[2 + i].integer.value;
296 black_list_array[i] = cpu_to_le32(country);
297 IWL_DEBUG_RADIO(fwrt, "TAS black list country %d\n", country);
298 }
299
300 ret = 0;
301out_free:
302 kfree(data);
303 return ret;
304}
305IWL_EXPORT_SYMBOL(iwl_acpi_get_tas);
306
307int iwl_acpi_get_mcc(struct device *dev, char *mcc)
308{
309 union acpi_object *wifi_pkg, *data;
310 u32 mcc_val;
311 int ret, tbl_rev;
312
313 data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD);
314 if (IS_ERR(data))
315 return PTR_ERR(data);
316
317 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_WRDD_WIFI_DATA_SIZE,
318 &tbl_rev);
319 if (IS_ERR(wifi_pkg)) {
320 ret = PTR_ERR(wifi_pkg);
321 goto out_free;
322 }
323
324 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
325 tbl_rev != 0) {
326 ret = -EINVAL;
327 goto out_free;
328 }
329
330 mcc_val = wifi_pkg->package.elements[1].integer.value;
331
332 mcc[0] = (mcc_val >> 8) & 0xff;
333 mcc[1] = mcc_val & 0xff;
334 mcc[2] = '\0';
335
336 ret = 0;
337out_free:
338 kfree(data);
339 return ret;
340}
341IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc);
342
343u64 iwl_acpi_get_pwr_limit(struct device *dev)
344{
345 union acpi_object *data, *wifi_pkg;
346 u64 dflt_pwr_limit;
347 int tbl_rev;
348
349 data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD);
350 if (IS_ERR(data)) {
351 dflt_pwr_limit = 0;
352 goto out;
353 }
354
355 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data,
356 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev);
357 if (IS_ERR(wifi_pkg) || tbl_rev != 0 ||
358 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) {
359 dflt_pwr_limit = 0;
360 goto out_free;
361 }
362
363 dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value;
364out_free:
365 kfree(data);
366out:
367 return dflt_pwr_limit;
368}
369IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit);
370
371int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk)
372{
373 union acpi_object *wifi_pkg, *data;
374 int ret, tbl_rev;
375
376 data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD);
377 if (IS_ERR(data))
378 return PTR_ERR(data);
379
380 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE,
381 &tbl_rev);
382 if (IS_ERR(wifi_pkg)) {
383 ret = PTR_ERR(wifi_pkg);
384 goto out_free;
385 }
386
387 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
388 tbl_rev != 0) {
389 ret = -EINVAL;
390 goto out_free;
391 }
392
393 *extl_clk = wifi_pkg->package.elements[1].integer.value;
394
395 ret = 0;
396
397out_free:
398 kfree(data);
399 return ret;
400}
401IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv);
402
403int iwl_sar_set_profile(union acpi_object *table,
404 struct iwl_sar_profile *profile,
405 bool enabled)
406{
407 int i;
408
409 profile->enabled = enabled;
410
411 for (i = 0; i < ACPI_SAR_TABLE_SIZE; i++) {
412 if (table[i].type != ACPI_TYPE_INTEGER ||
413 table[i].integer.value > U8_MAX)
414 return -EINVAL;
415
416 profile->table[i] = table[i].integer.value;
417 }
418
419 return 0;
420}
421IWL_EXPORT_SYMBOL(iwl_sar_set_profile);
422
423int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
424 __le16 per_chain_restriction[][IWL_NUM_SUB_BANDS],
425 int prof_a, int prof_b)
426{
427 int i, j, idx;
428 int profs[ACPI_SAR_NUM_CHAIN_LIMITS] = { prof_a, prof_b };
429
430 BUILD_BUG_ON(ACPI_SAR_NUM_CHAIN_LIMITS < 2);
431 BUILD_BUG_ON(ACPI_SAR_NUM_CHAIN_LIMITS * ACPI_SAR_NUM_SUB_BANDS !=
432 ACPI_SAR_TABLE_SIZE);
433
434 for (i = 0; i < ACPI_SAR_NUM_CHAIN_LIMITS; i++) {
435 struct iwl_sar_profile *prof;
436
437 /* don't allow SAR to be disabled (profile 0 means disable) */
438 if (profs[i] == 0)
439 return -EPERM;
440
441 /* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */
442 if (profs[i] > ACPI_SAR_PROFILE_NUM)
443 return -EINVAL;
444
445 /* profiles go from 1 to 4, so decrement to access the array */
446 prof = &fwrt->sar_profiles[profs[i] - 1];
447
448 /* if the profile is disabled, do nothing */
449 if (!prof->enabled) {
450 IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n",
451 profs[i]);
452 /*
453 * if one of the profiles is disabled, we
454 * ignore all of them and return 1 to
455 * differentiate disabled from other failures.
456 */
457 return 1;
458 }
459
460 IWL_DEBUG_INFO(fwrt,
461 "SAR EWRD: chain %d profile index %d\n",
462 i, profs[i]);
463 IWL_DEBUG_RADIO(fwrt, " Chain[%d]:\n", i);
464 for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS; j++) {
465 idx = (i * ACPI_SAR_NUM_SUB_BANDS) + j;
466 per_chain_restriction[i][j] =
467 cpu_to_le16(prof->table[idx]);
468 IWL_DEBUG_RADIO(fwrt, " Band[%d] = %d * .125dBm\n",
469 j, prof->table[idx]);
470 }
471 }
472
473 return 0;
474}
475IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
476
477int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
478{
479 union acpi_object *wifi_pkg, *table, *data;
480 bool enabled;
481 int ret, tbl_rev;
482
483 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);
484 if (IS_ERR(data))
485 return PTR_ERR(data);
486
487 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
488 ACPI_WRDS_WIFI_DATA_SIZE, &tbl_rev);
489 if (IS_ERR(wifi_pkg) || tbl_rev != 0) {
490 ret = PTR_ERR(wifi_pkg);
491 goto out_free;
492 }
493
494 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
495 ret = -EINVAL;
496 goto out_free;
497 }
498
499 enabled = !!(wifi_pkg->package.elements[1].integer.value);
500
501 /* position of the actual table */
502 table = &wifi_pkg->package.elements[2];
503
504 /* The profile from WRDS is officially profile 1, but goes
505 * into sar_profiles[0] (because we don't have a profile 0).
506 */
507 ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0], enabled);
508out_free:
509 kfree(data);
510 return ret;
511}
512IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table);
513
514int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt)
515{
516 union acpi_object *wifi_pkg, *data;
517 bool enabled;
518 int i, n_profiles, tbl_rev, pos;
519 int ret = 0;
520
521 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD);
522 if (IS_ERR(data))
523 return PTR_ERR(data);
524
525 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
526 ACPI_EWRD_WIFI_DATA_SIZE, &tbl_rev);
527 if (IS_ERR(wifi_pkg) || tbl_rev != 0) {
528 ret = PTR_ERR(wifi_pkg);
529 goto out_free;
530 }
531
532 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
533 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) {
534 ret = -EINVAL;
535 goto out_free;
536 }
537
538 enabled = !!(wifi_pkg->package.elements[1].integer.value);
539 n_profiles = wifi_pkg->package.elements[2].integer.value;
540
541 /*
542 * Check the validity of n_profiles. The EWRD profiles start
543 * from index 1, so the maximum value allowed here is
544 * ACPI_SAR_PROFILES_NUM - 1.
545 */
546 if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) {
547 ret = -EINVAL;
548 goto out_free;
549 }
550
551 /* the tables start at element 3 */
552 pos = 3;
553
554 for (i = 0; i < n_profiles; i++) {
555 /* The EWRD profiles officially go from 2 to 4, but we
556 * save them in sar_profiles[1-3] (because we don't
557 * have profile 0). So in the array we start from 1.
558 */
559 ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos],
560 &fwrt->sar_profiles[i + 1],
561 enabled);
562 if (ret < 0)
563 break;
564
565 /* go to the next table */
566 pos += ACPI_SAR_TABLE_SIZE;
567 }
568
569out_free:
570 kfree(data);
571 return ret;
572}
573IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table);
574
575int iwl_sar_get_wgds_table(struct iwl_fw_runtime *fwrt)
576{
577 union acpi_object *wifi_pkg, *data;
578 int i, j, ret, tbl_rev;
579 int idx = 1;
580
581 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD);
582 if (IS_ERR(data))
583 return PTR_ERR(data);
584
585 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
586 ACPI_WGDS_WIFI_DATA_SIZE, &tbl_rev);
587 if (IS_ERR(wifi_pkg) || tbl_rev > 1) {
588 ret = PTR_ERR(wifi_pkg);
589 goto out_free;
590 }
591
592 fwrt->geo_rev = tbl_rev;
593 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
594 for (j = 0; j < ACPI_GEO_TABLE_SIZE; j++) {
595 union acpi_object *entry;
596
597 entry = &wifi_pkg->package.elements[idx++];
598 if (entry->type != ACPI_TYPE_INTEGER ||
599 entry->integer.value > U8_MAX) {
600 ret = -EINVAL;
601 goto out_free;
602 }
603
604 fwrt->geo_profiles[i].values[j] = entry->integer.value;
605 }
606 }
607 ret = 0;
608out_free:
609 kfree(data);
610 return ret;
611}
612IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table);
613
614bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt)
615{
616 /*
617 * The GEO_TX_POWER_LIMIT command is not supported on earlier
618 * firmware versions. Unfortunately, we don't have a TLV API
619 * flag to rely on, so rely on the major version which is in
620 * the first byte of ucode_ver. This was implemented
621 * initially on version 38 and then backported to 17. It was
622 * also backported to 29, but only for 7265D devices. The
623 * intention was to have it in 36 as well, but not all 8000
624 * family got this feature enabled. The 8000 family is the
625 * only one using version 36, so skip this version entirely.
626 */
627 return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 ||
628 IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 ||
629 (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 &&
630 ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) ==
631 CSR_HW_REV_TYPE_7265D));
632}
633IWL_EXPORT_SYMBOL(iwl_sar_geo_support);
634
635int iwl_validate_sar_geo_profile(struct iwl_fw_runtime *fwrt,
636 struct iwl_host_cmd *cmd)
637{
638 struct iwl_geo_tx_power_profiles_resp *resp;
639 int ret;
640
641 resp = (void *)cmd->resp_pkt->data;
642 ret = le32_to_cpu(resp->profile_idx);
643 if (WARN_ON(ret > ACPI_NUM_GEO_PROFILES)) {
644 ret = -EIO;
645 IWL_WARN(fwrt, "Invalid geographic profile idx (%d)\n", ret);
646 }
647
648 return ret;
649}
650IWL_EXPORT_SYMBOL(iwl_validate_sar_geo_profile);
651
652int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
653 struct iwl_per_chain_offset_group *table)
654{
655 int ret, i, j;
656
657 if (!iwl_sar_geo_support(fwrt))
658 return -EOPNOTSUPP;
659
660 ret = iwl_sar_get_wgds_table(fwrt);
661 if (ret < 0) {
662 IWL_DEBUG_RADIO(fwrt,
663 "Geo SAR BIOS table invalid or unavailable. (%d)\n",
664 ret);
665 /* we don't fail if the table is not available */
666 return -ENOENT;
667 }
668
669 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES * ACPI_WGDS_NUM_BANDS *
670 ACPI_WGDS_TABLE_SIZE + 1 != ACPI_WGDS_WIFI_DATA_SIZE);
671
672 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES > IWL_NUM_GEO_PROFILES);
673
674 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
675 struct iwl_per_chain_offset *chain =
676 (struct iwl_per_chain_offset *)&table[i];
677
678 for (j = 0; j < ACPI_WGDS_NUM_BANDS; j++) {
679 u8 *value;
680
681 value = &fwrt->geo_profiles[i].values[j *
682 ACPI_GEO_PER_CHAIN_SIZE];
683 chain[j].max_tx_power = cpu_to_le16(value[0]);
684 chain[j].chain_a = value[1];
685 chain[j].chain_b = value[2];
686 IWL_DEBUG_RADIO(fwrt,
687 "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
688 i, j, value[1], value[2], value[0]);
689 }
690 }
691
692 return 0;
693}
694IWL_EXPORT_SYMBOL(iwl_sar_geo_init);