1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2017 Intel Deutschland GmbH
4 * Copyright (C) 2019-2021 Intel Corporation
5 */
6 #include <linux/uuid.h>
7 #include "iwl-drv.h"
8 #include "iwl-debug.h"
9 #include "acpi.h"
10 #include "fw/runtime.h"
11
12 const guid_t iwl_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6,
13 0xA5, 0xB3, 0x1F, 0x73,
14 0x8E, 0x28, 0x5A, 0xDE);
15 IWL_EXPORT_SYMBOL(iwl_guid);
16
17 const guid_t iwl_rfi_guid = GUID_INIT(0x7266172C, 0x220B, 0x4B29,
18 0x81, 0x4F, 0x75, 0xE4,
19 0xDD, 0x26, 0xB5, 0xFD);
20 IWL_EXPORT_SYMBOL(iwl_rfi_guid);
21
iwl_acpi_get_handle(struct device * dev,acpi_string method,acpi_handle * ret_handle)22 static int iwl_acpi_get_handle(struct device *dev, acpi_string method,
23 acpi_handle *ret_handle)
24 {
25 acpi_handle root_handle;
26 acpi_status status;
27
28 root_handle = ACPI_HANDLE(dev);
29 if (!root_handle) {
30 IWL_DEBUG_DEV_RADIO(dev,
31 "ACPI: Could not retrieve root port handle\n");
32 return -ENOENT;
33 }
34
35 status = acpi_get_handle(root_handle, method, ret_handle);
36 if (ACPI_FAILURE(status)) {
37 IWL_DEBUG_DEV_RADIO(dev,
38 "ACPI: %s method not found\n", method);
39 return -ENOENT;
40 }
41 return 0;
42 }
43
iwl_acpi_get_object(struct device * dev,acpi_string method)44 void *iwl_acpi_get_object(struct device *dev, acpi_string method)
45 {
46 struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
47 acpi_handle handle;
48 acpi_status status;
49 int ret;
50
51 ret = iwl_acpi_get_handle(dev, method, &handle);
52 if (ret)
53 return ERR_PTR(-ENOENT);
54
55 /* Call the method with no arguments */
56 status = acpi_evaluate_object(handle, NULL, NULL, &buf);
57 if (ACPI_FAILURE(status)) {
58 IWL_DEBUG_DEV_RADIO(dev,
59 "ACPI: %s method invocation failed (status: 0x%x)\n",
60 method, status);
61 return ERR_PTR(-ENOENT);
62 }
63 return buf.pointer;
64 }
65 IWL_EXPORT_SYMBOL(iwl_acpi_get_object);
66
67 /*
68 * Generic function for evaluating a method defined in the device specific
69 * method (DSM) interface. The returned acpi object must be freed by calling
70 * function.
71 */
iwl_acpi_get_dsm_object(struct device * dev,int rev,int func,union acpi_object * args,const guid_t * guid)72 static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func,
73 union acpi_object *args,
74 const guid_t *guid)
75 {
76 union acpi_object *obj;
77
78 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), guid, rev, func,
79 args);
80 if (!obj) {
81 IWL_DEBUG_DEV_RADIO(dev,
82 "ACPI: DSM method invocation failed (rev: %d, func:%d)\n",
83 rev, func);
84 return ERR_PTR(-ENOENT);
85 }
86 return obj;
87 }
88
89 /*
90 * Generic function to evaluate a DSM with no arguments
91 * and an integer return value,
92 * (as an integer object or inside a buffer object),
93 * verify and assign the value in the "value" parameter.
94 * return 0 in success and the appropriate errno otherwise.
95 */
iwl_acpi_get_dsm_integer(struct device * dev,int rev,int func,const guid_t * guid,u64 * value,size_t expected_size)96 static int iwl_acpi_get_dsm_integer(struct device *dev, int rev, int func,
97 const guid_t *guid, u64 *value,
98 size_t expected_size)
99 {
100 union acpi_object *obj;
101 int ret = 0;
102
103 obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL, guid);
104 if (IS_ERR(obj)) {
105 IWL_DEBUG_DEV_RADIO(dev,
106 "Failed to get DSM object. func= %d\n",
107 func);
108 return -ENOENT;
109 }
110
111 if (obj->type == ACPI_TYPE_INTEGER) {
112 *value = obj->integer.value;
113 } else if (obj->type == ACPI_TYPE_BUFFER) {
114 __le64 le_value = 0;
115
116 if (WARN_ON_ONCE(expected_size > sizeof(le_value)))
117 return -EINVAL;
118
119 /* if the buffer size doesn't match the expected size */
120 if (obj->buffer.length != expected_size)
121 IWL_DEBUG_DEV_RADIO(dev,
122 "ACPI: DSM invalid buffer size, padding or truncating (%d)\n",
123 obj->buffer.length);
124
125 /* assuming LE from Intel BIOS spec */
126 memcpy(&le_value, obj->buffer.pointer,
127 min_t(size_t, expected_size, (size_t)obj->buffer.length));
128 *value = le64_to_cpu(le_value);
129 } else {
130 IWL_DEBUG_DEV_RADIO(dev,
131 "ACPI: DSM method did not return a valid object, type=%d\n",
132 obj->type);
133 ret = -EINVAL;
134 goto out;
135 }
136
137 IWL_DEBUG_DEV_RADIO(dev,
138 "ACPI: DSM method evaluated: func=%d, ret=%d\n",
139 func, ret);
140 out:
141 ACPI_FREE(obj);
142 return ret;
143 }
144
145 /*
146 * Evaluate a DSM with no arguments and a u8 return value,
147 */
iwl_acpi_get_dsm_u8(struct device * dev,int rev,int func,const guid_t * guid,u8 * value)148 int iwl_acpi_get_dsm_u8(struct device *dev, int rev, int func,
149 const guid_t *guid, u8 *value)
150 {
151 int ret;
152 u64 val;
153
154 ret = iwl_acpi_get_dsm_integer(dev, rev, func,
155 guid, &val, sizeof(u8));
156
157 if (ret < 0)
158 return ret;
159
160 /* cast val (u64) to be u8 */
161 *value = (u8)val;
162 return 0;
163 }
164 IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u8);
165
iwl_acpi_get_wifi_pkg(struct device * dev,union acpi_object * data,int data_size,int * tbl_rev)166 union acpi_object *iwl_acpi_get_wifi_pkg(struct device *dev,
167 union acpi_object *data,
168 int data_size, int *tbl_rev)
169 {
170 int i;
171 union acpi_object *wifi_pkg;
172
173 /*
174 * We need at least one entry in the wifi package that
175 * describes the domain, and one more entry, otherwise there's
176 * no point in reading it.
177 */
178 if (WARN_ON_ONCE(data_size < 2))
179 return ERR_PTR(-EINVAL);
180
181 /*
182 * We need at least two packages, one for the revision and one
183 * for the data itself. Also check that the revision is valid
184 * (i.e. it is an integer (each caller has to check by itself
185 * if the returned revision is supported)).
186 */
187 if (data->type != ACPI_TYPE_PACKAGE ||
188 data->package.count < 2 ||
189 data->package.elements[0].type != ACPI_TYPE_INTEGER) {
190 IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n");
191 return ERR_PTR(-EINVAL);
192 }
193
194 *tbl_rev = data->package.elements[0].integer.value;
195
196 /* loop through all the packages to find the one for WiFi */
197 for (i = 1; i < data->package.count; i++) {
198 union acpi_object *domain;
199
200 wifi_pkg = &data->package.elements[i];
201
202 /* skip entries that are not a package with the right size */
203 if (wifi_pkg->type != ACPI_TYPE_PACKAGE ||
204 wifi_pkg->package.count != data_size)
205 continue;
206
207 domain = &wifi_pkg->package.elements[0];
208 if (domain->type == ACPI_TYPE_INTEGER &&
209 domain->integer.value == ACPI_WIFI_DOMAIN)
210 goto found;
211 }
212
213 return ERR_PTR(-ENOENT);
214
215 found:
216 return wifi_pkg;
217 }
218 IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg);
219
iwl_acpi_get_tas(struct iwl_fw_runtime * fwrt,__le32 * block_list_array,int * block_list_size)220 int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt,
221 __le32 *block_list_array,
222 int *block_list_size)
223 {
224 union acpi_object *wifi_pkg, *data;
225 int ret, tbl_rev, i;
226 bool enabled;
227
228 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);
229 if (IS_ERR(data))
230 return PTR_ERR(data);
231
232 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
233 ACPI_WTAS_WIFI_DATA_SIZE,
234 &tbl_rev);
235 if (IS_ERR(wifi_pkg)) {
236 ret = PTR_ERR(wifi_pkg);
237 goto out_free;
238 }
239
240 if (wifi_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
241 tbl_rev != 0) {
242 ret = -EINVAL;
243 goto out_free;
244 }
245
246 enabled = !!wifi_pkg->package.elements[0].integer.value;
247
248 if (!enabled) {
249 *block_list_size = -1;
250 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");
251 ret = 0;
252 goto out_free;
253 }
254
255 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
256 wifi_pkg->package.elements[1].integer.value >
257 APCI_WTAS_BLACK_LIST_MAX) {
258 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",
259 wifi_pkg->package.elements[1].integer.value);
260 ret = -EINVAL;
261 goto out_free;
262 }
263 *block_list_size = wifi_pkg->package.elements[1].integer.value;
264
265 IWL_DEBUG_RADIO(fwrt, "TAS array size %d\n", *block_list_size);
266 if (*block_list_size > APCI_WTAS_BLACK_LIST_MAX) {
267 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n",
268 *block_list_size);
269 ret = -EINVAL;
270 goto out_free;
271 }
272
273 for (i = 0; i < *block_list_size; i++) {
274 u32 country;
275
276 if (wifi_pkg->package.elements[2 + i].type !=
277 ACPI_TYPE_INTEGER) {
278 IWL_DEBUG_RADIO(fwrt,
279 "TAS invalid array elem %d\n", 2 + i);
280 ret = -EINVAL;
281 goto out_free;
282 }
283
284 country = wifi_pkg->package.elements[2 + i].integer.value;
285 block_list_array[i] = cpu_to_le32(country);
286 IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country);
287 }
288
289 ret = 0;
290 out_free:
291 kfree(data);
292 return ret;
293 }
294 IWL_EXPORT_SYMBOL(iwl_acpi_get_tas);
295
iwl_acpi_get_mcc(struct device * dev,char * mcc)296 int iwl_acpi_get_mcc(struct device *dev, char *mcc)
297 {
298 union acpi_object *wifi_pkg, *data;
299 u32 mcc_val;
300 int ret, tbl_rev;
301
302 data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD);
303 if (IS_ERR(data))
304 return PTR_ERR(data);
305
306 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_WRDD_WIFI_DATA_SIZE,
307 &tbl_rev);
308 if (IS_ERR(wifi_pkg)) {
309 ret = PTR_ERR(wifi_pkg);
310 goto out_free;
311 }
312
313 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
314 tbl_rev != 0) {
315 ret = -EINVAL;
316 goto out_free;
317 }
318
319 mcc_val = wifi_pkg->package.elements[1].integer.value;
320
321 mcc[0] = (mcc_val >> 8) & 0xff;
322 mcc[1] = mcc_val & 0xff;
323 mcc[2] = '\0';
324
325 ret = 0;
326 out_free:
327 kfree(data);
328 return ret;
329 }
330 IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc);
331
iwl_acpi_get_pwr_limit(struct device * dev)332 u64 iwl_acpi_get_pwr_limit(struct device *dev)
333 {
334 union acpi_object *data, *wifi_pkg;
335 u64 dflt_pwr_limit;
336 int tbl_rev;
337
338 data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD);
339 if (IS_ERR(data)) {
340 dflt_pwr_limit = 0;
341 goto out;
342 }
343
344 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data,
345 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev);
346 if (IS_ERR(wifi_pkg) || tbl_rev != 0 ||
347 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) {
348 dflt_pwr_limit = 0;
349 goto out_free;
350 }
351
352 dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value;
353 out_free:
354 kfree(data);
355 out:
356 return dflt_pwr_limit;
357 }
358 IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit);
359
iwl_acpi_get_eckv(struct device * dev,u32 * extl_clk)360 int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk)
361 {
362 union acpi_object *wifi_pkg, *data;
363 int ret, tbl_rev;
364
365 data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD);
366 if (IS_ERR(data))
367 return PTR_ERR(data);
368
369 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE,
370 &tbl_rev);
371 if (IS_ERR(wifi_pkg)) {
372 ret = PTR_ERR(wifi_pkg);
373 goto out_free;
374 }
375
376 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
377 tbl_rev != 0) {
378 ret = -EINVAL;
379 goto out_free;
380 }
381
382 *extl_clk = wifi_pkg->package.elements[1].integer.value;
383
384 ret = 0;
385
386 out_free:
387 kfree(data);
388 return ret;
389 }
390 IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv);
391
iwl_sar_set_profile(union acpi_object * table,struct iwl_sar_profile * profile,bool enabled)392 static int iwl_sar_set_profile(union acpi_object *table,
393 struct iwl_sar_profile *profile,
394 bool enabled)
395 {
396 int i;
397
398 profile->enabled = enabled;
399
400 for (i = 0; i < ACPI_SAR_TABLE_SIZE; i++) {
401 if (table[i].type != ACPI_TYPE_INTEGER ||
402 table[i].integer.value > U8_MAX)
403 return -EINVAL;
404
405 profile->table[i] = table[i].integer.value;
406 }
407
408 return 0;
409 }
410
iwl_sar_fill_table(struct iwl_fw_runtime * fwrt,__le16 * per_chain,u32 n_subbands,int prof_a,int prof_b)411 static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt,
412 __le16 *per_chain, u32 n_subbands,
413 int prof_a, int prof_b)
414 {
415 int profs[ACPI_SAR_NUM_CHAIN_LIMITS] = { prof_a, prof_b };
416 int i, j, idx;
417
418 for (i = 0; i < ACPI_SAR_NUM_CHAIN_LIMITS; i++) {
419 struct iwl_sar_profile *prof;
420
421 /* don't allow SAR to be disabled (profile 0 means disable) */
422 if (profs[i] == 0)
423 return -EPERM;
424
425 /* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */
426 if (profs[i] > ACPI_SAR_PROFILE_NUM)
427 return -EINVAL;
428
429 /* profiles go from 1 to 4, so decrement to access the array */
430 prof = &fwrt->sar_profiles[profs[i] - 1];
431
432 /* if the profile is disabled, do nothing */
433 if (!prof->enabled) {
434 IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n",
435 profs[i]);
436 /*
437 * if one of the profiles is disabled, we
438 * ignore all of them and return 1 to
439 * differentiate disabled from other failures.
440 */
441 return 1;
442 }
443
444 IWL_DEBUG_INFO(fwrt,
445 "SAR EWRD: chain %d profile index %d\n",
446 i, profs[i]);
447 IWL_DEBUG_RADIO(fwrt, " Chain[%d]:\n", i);
448 for (j = 0; j < n_subbands; j++) {
449 idx = i * ACPI_SAR_NUM_SUB_BANDS + j;
450 per_chain[i * n_subbands + j] =
451 cpu_to_le16(prof->table[idx]);
452 IWL_DEBUG_RADIO(fwrt, " Band[%d] = %d * .125dBm\n",
453 j, prof->table[idx]);
454 }
455 }
456
457 return 0;
458 }
459
iwl_sar_select_profile(struct iwl_fw_runtime * fwrt,__le16 * per_chain,u32 n_tables,u32 n_subbands,int prof_a,int prof_b)460 int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
461 __le16 *per_chain, u32 n_tables, u32 n_subbands,
462 int prof_a, int prof_b)
463 {
464 int i, ret = 0;
465
466 for (i = 0; i < n_tables; i++) {
467 ret = iwl_sar_fill_table(fwrt,
468 &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAIN_LIMITS],
469 n_subbands, prof_a, prof_b);
470 if (ret)
471 break;
472 }
473
474 return ret;
475 }
476 IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
477
iwl_sar_get_wrds_table(struct iwl_fw_runtime * fwrt)478 int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
479 {
480 union acpi_object *wifi_pkg, *table, *data;
481 bool enabled;
482 int ret, tbl_rev;
483
484 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);
485 if (IS_ERR(data))
486 return PTR_ERR(data);
487
488 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
489 ACPI_WRDS_WIFI_DATA_SIZE, &tbl_rev);
490 if (IS_ERR(wifi_pkg)) {
491 ret = PTR_ERR(wifi_pkg);
492 goto out_free;
493 }
494
495 if (tbl_rev != 0) {
496 ret = -EINVAL;
497 goto out_free;
498 }
499
500 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
501 ret = -EINVAL;
502 goto out_free;
503 }
504
505 enabled = !!(wifi_pkg->package.elements[1].integer.value);
506
507 /* position of the actual table */
508 table = &wifi_pkg->package.elements[2];
509
510 /* The profile from WRDS is officially profile 1, but goes
511 * into sar_profiles[0] (because we don't have a profile 0).
512 */
513 ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0], enabled);
514 out_free:
515 kfree(data);
516 return ret;
517 }
518 IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table);
519
iwl_sar_get_ewrd_table(struct iwl_fw_runtime * fwrt)520 int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt)
521 {
522 union acpi_object *wifi_pkg, *data;
523 bool enabled;
524 int i, n_profiles, tbl_rev, pos;
525 int ret = 0;
526
527 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD);
528 if (IS_ERR(data))
529 return PTR_ERR(data);
530
531 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
532 ACPI_EWRD_WIFI_DATA_SIZE, &tbl_rev);
533 if (IS_ERR(wifi_pkg)) {
534 ret = PTR_ERR(wifi_pkg);
535 goto out_free;
536 }
537
538 if (tbl_rev != 0) {
539 ret = -EINVAL;
540 goto out_free;
541 }
542
543 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
544 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) {
545 ret = -EINVAL;
546 goto out_free;
547 }
548
549 enabled = !!(wifi_pkg->package.elements[1].integer.value);
550 n_profiles = wifi_pkg->package.elements[2].integer.value;
551
552 /*
553 * Check the validity of n_profiles. The EWRD profiles start
554 * from index 1, so the maximum value allowed here is
555 * ACPI_SAR_PROFILES_NUM - 1.
556 */
557 if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) {
558 ret = -EINVAL;
559 goto out_free;
560 }
561
562 /* the tables start at element 3 */
563 pos = 3;
564
565 for (i = 0; i < n_profiles; i++) {
566 /* The EWRD profiles officially go from 2 to 4, but we
567 * save them in sar_profiles[1-3] (because we don't
568 * have profile 0). So in the array we start from 1.
569 */
570 ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos],
571 &fwrt->sar_profiles[i + 1],
572 enabled);
573 if (ret < 0)
574 break;
575
576 /* go to the next table */
577 pos += ACPI_SAR_TABLE_SIZE;
578 }
579
580 out_free:
581 kfree(data);
582 return ret;
583 }
584 IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table);
585
iwl_sar_get_wgds_table(struct iwl_fw_runtime * fwrt)586 int iwl_sar_get_wgds_table(struct iwl_fw_runtime *fwrt)
587 {
588 union acpi_object *wifi_pkg, *data;
589 int i, j, ret, tbl_rev;
590 int idx = 1;
591
592 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD);
593 if (IS_ERR(data))
594 return PTR_ERR(data);
595
596 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
597 ACPI_WGDS_WIFI_DATA_SIZE, &tbl_rev);
598
599 if (IS_ERR(wifi_pkg)) {
600 ret = PTR_ERR(wifi_pkg);
601 goto out_free;
602 }
603
604 if (tbl_rev > 1) {
605 ret = -EINVAL;
606 goto out_free;
607 }
608
609 fwrt->geo_rev = tbl_rev;
610 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
611 for (j = 0; j < ACPI_GEO_TABLE_SIZE; j++) {
612 union acpi_object *entry;
613
614 entry = &wifi_pkg->package.elements[idx++];
615 if (entry->type != ACPI_TYPE_INTEGER ||
616 entry->integer.value > U8_MAX) {
617 ret = -EINVAL;
618 goto out_free;
619 }
620
621 fwrt->geo_profiles[i].values[j] = entry->integer.value;
622 }
623 }
624 ret = 0;
625 out_free:
626 kfree(data);
627 return ret;
628 }
629 IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table);
630
iwl_sar_geo_support(struct iwl_fw_runtime * fwrt)631 bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt)
632 {
633 /*
634 * The GEO_TX_POWER_LIMIT command is not supported on earlier
635 * firmware versions. Unfortunately, we don't have a TLV API
636 * flag to rely on, so rely on the major version which is in
637 * the first byte of ucode_ver. This was implemented
638 * initially on version 38 and then backported to 17. It was
639 * also backported to 29, but only for 7265D devices. The
640 * intention was to have it in 36 as well, but not all 8000
641 * family got this feature enabled. The 8000 family is the
642 * only one using version 36, so skip this version entirely.
643 */
644 return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 ||
645 IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 ||
646 (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 &&
647 ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) ==
648 CSR_HW_REV_TYPE_7265D));
649 }
650 IWL_EXPORT_SYMBOL(iwl_sar_geo_support);
651
iwl_sar_geo_init(struct iwl_fw_runtime * fwrt,struct iwl_per_chain_offset * table,u32 n_bands)652 int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
653 struct iwl_per_chain_offset *table, u32 n_bands)
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 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
670 for (j = 0; j < n_bands; j++) {
671 struct iwl_per_chain_offset *chain =
672 &table[i * n_bands + j];
673 u8 *value;
674
675 if (j * ACPI_GEO_PER_CHAIN_SIZE >=
676 ARRAY_SIZE(fwrt->geo_profiles[0].values))
677 /*
678 * Currently we only store lb an hb values, and
679 * don't have any special ones for uhb. So leave
680 * those empty for the time being
681 */
682 break;
683
684 value = &fwrt->geo_profiles[i].values[j *
685 ACPI_GEO_PER_CHAIN_SIZE];
686 chain->max_tx_power = cpu_to_le16(value[0]);
687 chain->chain_a = value[1];
688 chain->chain_b = value[2];
689 IWL_DEBUG_RADIO(fwrt,
690 "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
691 i, j, value[1], value[2], value[0]);
692 }
693 }
694
695 return 0;
696 }
697 IWL_EXPORT_SYMBOL(iwl_sar_geo_init);
698
iwl_acpi_eval_dsm_func(struct device * dev,enum iwl_dsm_funcs_rev_0 eval_func)699 static u32 iwl_acpi_eval_dsm_func(struct device *dev, enum iwl_dsm_funcs_rev_0 eval_func)
700 {
701 union acpi_object *obj;
702 u32 ret;
703
704 obj = iwl_acpi_get_dsm_object(dev, 0,
705 eval_func, NULL,
706 &iwl_guid);
707
708 if (IS_ERR(obj)) {
709 IWL_DEBUG_DEV_RADIO(dev,
710 "ACPI: DSM func '%d': Got Error in obj = %ld\n",
711 eval_func,
712 PTR_ERR(obj));
713 return 0;
714 }
715
716 if (obj->type != ACPI_TYPE_INTEGER) {
717 IWL_DEBUG_DEV_RADIO(dev,
718 "ACPI: DSM func '%d' did not return a valid object, type=%d\n",
719 eval_func,
720 obj->type);
721 ret = 0;
722 goto out;
723 }
724
725 ret = obj->integer.value;
726 IWL_DEBUG_DEV_RADIO(dev,
727 "ACPI: DSM method evaluated: func='%d', ret=%d\n",
728 eval_func,
729 ret);
730 out:
731 ACPI_FREE(obj);
732 return ret;
733 }
734
iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime * fwrt)735 __le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt)
736 {
737 u32 ret;
738 __le32 config_bitmap = 0;
739
740 /*
741 ** Evaluate func 'DSM_FUNC_ENABLE_INDONESIA_5G2'
742 */
743 ret = iwl_acpi_eval_dsm_func(fwrt->dev, DSM_FUNC_ENABLE_INDONESIA_5G2);
744
745 if (ret == DSM_VALUE_INDONESIA_ENABLE)
746 config_bitmap |=
747 cpu_to_le32(LARI_CONFIG_ENABLE_5G2_IN_INDONESIA_MSK);
748
749 /*
750 ** Evaluate func 'DSM_FUNC_DISABLE_SRD'
751 */
752 ret = iwl_acpi_eval_dsm_func(fwrt->dev, DSM_FUNC_DISABLE_SRD);
753
754 if (ret == DSM_VALUE_SRD_PASSIVE)
755 config_bitmap |=
756 cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_PASSIVE_MSK);
757
758 else if (ret == DSM_VALUE_SRD_DISABLE)
759 config_bitmap |=
760 cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_DISABLED_MSK);
761
762 return config_bitmap;
763 }
764 IWL_EXPORT_SYMBOL(iwl_acpi_get_lari_config_bitmap);
765