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
166 /*
167 * Evaluate a DSM with no arguments and a u32 return value,
168 */
iwl_acpi_get_dsm_u32(struct device * dev,int rev,int func,const guid_t * guid,u32 * value)169 int iwl_acpi_get_dsm_u32(struct device *dev, int rev, int func,
170 const guid_t *guid, u32 *value)
171 {
172 int ret;
173 u64 val;
174
175 ret = iwl_acpi_get_dsm_integer(dev, rev, func,
176 guid, &val, sizeof(u32));
177
178 if (ret < 0)
179 return ret;
180
181 /* cast val (u64) to be u32 */
182 *value = (u32)val;
183 return 0;
184 }
185 IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u32);
186
iwl_acpi_get_wifi_pkg(struct device * dev,union acpi_object * data,int data_size,int * tbl_rev)187 union acpi_object *iwl_acpi_get_wifi_pkg(struct device *dev,
188 union acpi_object *data,
189 int data_size, int *tbl_rev)
190 {
191 int i;
192 union acpi_object *wifi_pkg;
193
194 /*
195 * We need at least one entry in the wifi package that
196 * describes the domain, and one more entry, otherwise there's
197 * no point in reading it.
198 */
199 if (WARN_ON_ONCE(data_size < 2))
200 return ERR_PTR(-EINVAL);
201
202 /*
203 * We need at least two packages, one for the revision and one
204 * for the data itself. Also check that the revision is valid
205 * (i.e. it is an integer (each caller has to check by itself
206 * if the returned revision is supported)).
207 */
208 if (data->type != ACPI_TYPE_PACKAGE ||
209 data->package.count < 2 ||
210 data->package.elements[0].type != ACPI_TYPE_INTEGER) {
211 IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n");
212 return ERR_PTR(-EINVAL);
213 }
214
215 *tbl_rev = data->package.elements[0].integer.value;
216
217 /* loop through all the packages to find the one for WiFi */
218 for (i = 1; i < data->package.count; i++) {
219 union acpi_object *domain;
220
221 wifi_pkg = &data->package.elements[i];
222
223 /* skip entries that are not a package with the right size */
224 if (wifi_pkg->type != ACPI_TYPE_PACKAGE ||
225 wifi_pkg->package.count != data_size)
226 continue;
227
228 domain = &wifi_pkg->package.elements[0];
229 if (domain->type == ACPI_TYPE_INTEGER &&
230 domain->integer.value == ACPI_WIFI_DOMAIN)
231 goto found;
232 }
233
234 return ERR_PTR(-ENOENT);
235
236 found:
237 return wifi_pkg;
238 }
239 IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg);
240
iwl_acpi_get_tas(struct iwl_fw_runtime * fwrt,__le32 * block_list_array,int * block_list_size)241 int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt,
242 __le32 *block_list_array,
243 int *block_list_size)
244 {
245 union acpi_object *wifi_pkg, *data;
246 int ret, tbl_rev, i;
247 bool enabled;
248
249 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);
250 if (IS_ERR(data))
251 return PTR_ERR(data);
252
253 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
254 ACPI_WTAS_WIFI_DATA_SIZE,
255 &tbl_rev);
256 if (IS_ERR(wifi_pkg)) {
257 ret = PTR_ERR(wifi_pkg);
258 goto out_free;
259 }
260
261 if (wifi_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
262 tbl_rev != 0) {
263 ret = -EINVAL;
264 goto out_free;
265 }
266
267 enabled = !!wifi_pkg->package.elements[1].integer.value;
268
269 if (!enabled) {
270 *block_list_size = -1;
271 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");
272 ret = 0;
273 goto out_free;
274 }
275
276 if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER ||
277 wifi_pkg->package.elements[2].integer.value >
278 APCI_WTAS_BLACK_LIST_MAX) {
279 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",
280 wifi_pkg->package.elements[1].integer.value);
281 ret = -EINVAL;
282 goto out_free;
283 }
284 *block_list_size = wifi_pkg->package.elements[2].integer.value;
285
286 IWL_DEBUG_RADIO(fwrt, "TAS array size %d\n", *block_list_size);
287 if (*block_list_size > APCI_WTAS_BLACK_LIST_MAX) {
288 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n",
289 *block_list_size);
290 ret = -EINVAL;
291 goto out_free;
292 }
293
294 for (i = 0; i < *block_list_size; i++) {
295 u32 country;
296
297 if (wifi_pkg->package.elements[3 + i].type !=
298 ACPI_TYPE_INTEGER) {
299 IWL_DEBUG_RADIO(fwrt,
300 "TAS invalid array elem %d\n", 3 + i);
301 ret = -EINVAL;
302 goto out_free;
303 }
304
305 country = wifi_pkg->package.elements[3 + i].integer.value;
306 block_list_array[i] = cpu_to_le32(country);
307 IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country);
308 }
309
310 ret = 0;
311 out_free:
312 kfree(data);
313 return ret;
314 }
315 IWL_EXPORT_SYMBOL(iwl_acpi_get_tas);
316
iwl_acpi_get_mcc(struct device * dev,char * mcc)317 int iwl_acpi_get_mcc(struct device *dev, char *mcc)
318 {
319 union acpi_object *wifi_pkg, *data;
320 u32 mcc_val;
321 int ret, tbl_rev;
322
323 data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD);
324 if (IS_ERR(data))
325 return PTR_ERR(data);
326
327 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_WRDD_WIFI_DATA_SIZE,
328 &tbl_rev);
329 if (IS_ERR(wifi_pkg)) {
330 ret = PTR_ERR(wifi_pkg);
331 goto out_free;
332 }
333
334 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
335 tbl_rev != 0) {
336 ret = -EINVAL;
337 goto out_free;
338 }
339
340 mcc_val = wifi_pkg->package.elements[1].integer.value;
341
342 mcc[0] = (mcc_val >> 8) & 0xff;
343 mcc[1] = mcc_val & 0xff;
344 mcc[2] = '\0';
345
346 ret = 0;
347 out_free:
348 kfree(data);
349 return ret;
350 }
351 IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc);
352
iwl_acpi_get_pwr_limit(struct device * dev)353 u64 iwl_acpi_get_pwr_limit(struct device *dev)
354 {
355 union acpi_object *data, *wifi_pkg;
356 u64 dflt_pwr_limit;
357 int tbl_rev;
358
359 data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD);
360 if (IS_ERR(data)) {
361 dflt_pwr_limit = 0;
362 goto out;
363 }
364
365 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data,
366 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev);
367 if (IS_ERR(wifi_pkg) || tbl_rev != 0 ||
368 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) {
369 dflt_pwr_limit = 0;
370 goto out_free;
371 }
372
373 dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value;
374 out_free:
375 kfree(data);
376 out:
377 return dflt_pwr_limit;
378 }
379 IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit);
380
iwl_acpi_get_eckv(struct device * dev,u32 * extl_clk)381 int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk)
382 {
383 union acpi_object *wifi_pkg, *data;
384 int ret, tbl_rev;
385
386 data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD);
387 if (IS_ERR(data))
388 return PTR_ERR(data);
389
390 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE,
391 &tbl_rev);
392 if (IS_ERR(wifi_pkg)) {
393 ret = PTR_ERR(wifi_pkg);
394 goto out_free;
395 }
396
397 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
398 tbl_rev != 0) {
399 ret = -EINVAL;
400 goto out_free;
401 }
402
403 *extl_clk = wifi_pkg->package.elements[1].integer.value;
404
405 ret = 0;
406
407 out_free:
408 kfree(data);
409 return ret;
410 }
411 IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv);
412
iwl_sar_set_profile(union acpi_object * table,struct iwl_sar_profile * profile,bool enabled,u8 num_chains,u8 num_sub_bands)413 static int iwl_sar_set_profile(union acpi_object *table,
414 struct iwl_sar_profile *profile,
415 bool enabled, u8 num_chains, u8 num_sub_bands)
416 {
417 int i, j, idx = 0;
418
419 /*
420 * The table from ACPI is flat, but we store it in a
421 * structured array.
422 */
423 for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV2; i++) {
424 for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS_REV2; j++) {
425 /* if we don't have the values, use the default */
426 if (i >= num_chains || j >= num_sub_bands) {
427 profile->chains[i].subbands[j] = 0;
428 } else {
429 if (table[idx].type != ACPI_TYPE_INTEGER ||
430 table[idx].integer.value > U8_MAX)
431 return -EINVAL;
432
433 profile->chains[i].subbands[j] =
434 table[idx].integer.value;
435
436 idx++;
437 }
438 }
439 }
440
441 /* Only if all values were valid can the profile be enabled */
442 profile->enabled = enabled;
443
444 return 0;
445 }
446
iwl_sar_fill_table(struct iwl_fw_runtime * fwrt,__le16 * per_chain,u32 n_subbands,int prof_a,int prof_b)447 static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt,
448 __le16 *per_chain, u32 n_subbands,
449 int prof_a, int prof_b)
450 {
451 int profs[ACPI_SAR_NUM_CHAINS_REV0] = { prof_a, prof_b };
452 int i, j;
453
454 for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV0; i++) {
455 struct iwl_sar_profile *prof;
456
457 /* don't allow SAR to be disabled (profile 0 means disable) */
458 if (profs[i] == 0)
459 return -EPERM;
460
461 /* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */
462 if (profs[i] > ACPI_SAR_PROFILE_NUM)
463 return -EINVAL;
464
465 /* profiles go from 1 to 4, so decrement to access the array */
466 prof = &fwrt->sar_profiles[profs[i] - 1];
467
468 /* if the profile is disabled, do nothing */
469 if (!prof->enabled) {
470 IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n",
471 profs[i]);
472 /*
473 * if one of the profiles is disabled, we
474 * ignore all of them and return 1 to
475 * differentiate disabled from other failures.
476 */
477 return 1;
478 }
479
480 IWL_DEBUG_INFO(fwrt,
481 "SAR EWRD: chain %d profile index %d\n",
482 i, profs[i]);
483 IWL_DEBUG_RADIO(fwrt, " Chain[%d]:\n", i);
484 for (j = 0; j < n_subbands; j++) {
485 per_chain[i * n_subbands + j] =
486 cpu_to_le16(prof->chains[i].subbands[j]);
487 IWL_DEBUG_RADIO(fwrt, " Band[%d] = %d * .125dBm\n",
488 j, prof->chains[i].subbands[j]);
489 }
490 }
491
492 return 0;
493 }
494
iwl_sar_select_profile(struct iwl_fw_runtime * fwrt,__le16 * per_chain,u32 n_tables,u32 n_subbands,int prof_a,int prof_b)495 int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
496 __le16 *per_chain, u32 n_tables, u32 n_subbands,
497 int prof_a, int prof_b)
498 {
499 int i, ret = 0;
500
501 for (i = 0; i < n_tables; i++) {
502 ret = iwl_sar_fill_table(fwrt,
503 &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAINS_REV0],
504 n_subbands, prof_a, prof_b);
505 if (ret)
506 break;
507 }
508
509 return ret;
510 }
511 IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
512
iwl_sar_get_wrds_table(struct iwl_fw_runtime * fwrt)513 int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
514 {
515 union acpi_object *wifi_pkg, *table, *data;
516 bool enabled;
517 int ret, tbl_rev;
518 u8 num_chains, num_sub_bands;
519
520 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);
521 if (IS_ERR(data))
522 return PTR_ERR(data);
523
524 /* start by trying to read revision 2 */
525 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
526 ACPI_WRDS_WIFI_DATA_SIZE_REV2,
527 &tbl_rev);
528 if (!IS_ERR(wifi_pkg)) {
529 if (tbl_rev != 2) {
530 ret = PTR_ERR(wifi_pkg);
531 goto out_free;
532 }
533
534 num_chains = ACPI_SAR_NUM_CHAINS_REV2;
535 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;
536
537 goto read_table;
538 }
539
540 /* then try revision 1 */
541 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
542 ACPI_WRDS_WIFI_DATA_SIZE_REV1,
543 &tbl_rev);
544 if (!IS_ERR(wifi_pkg)) {
545 if (tbl_rev != 1) {
546 ret = PTR_ERR(wifi_pkg);
547 goto out_free;
548 }
549
550 num_chains = ACPI_SAR_NUM_CHAINS_REV1;
551 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;
552
553 goto read_table;
554 }
555
556 /* then finally revision 0 */
557 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
558 ACPI_WRDS_WIFI_DATA_SIZE_REV0,
559 &tbl_rev);
560 if (!IS_ERR(wifi_pkg)) {
561 if (tbl_rev != 0) {
562 ret = PTR_ERR(wifi_pkg);
563 goto out_free;
564 }
565
566 num_chains = ACPI_SAR_NUM_CHAINS_REV0;
567 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;
568
569 goto read_table;
570 }
571
572 ret = PTR_ERR(wifi_pkg);
573 goto out_free;
574
575 read_table:
576 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
577 ret = -EINVAL;
578 goto out_free;
579 }
580
581 IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev);
582
583 enabled = !!(wifi_pkg->package.elements[1].integer.value);
584
585 /* position of the actual table */
586 table = &wifi_pkg->package.elements[2];
587
588 /* The profile from WRDS is officially profile 1, but goes
589 * into sar_profiles[0] (because we don't have a profile 0).
590 */
591 ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0], enabled,
592 num_chains, num_sub_bands);
593 out_free:
594 kfree(data);
595 return ret;
596 }
597 IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table);
598
iwl_sar_get_ewrd_table(struct iwl_fw_runtime * fwrt)599 int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt)
600 {
601 union acpi_object *wifi_pkg, *data;
602 bool enabled;
603 int i, n_profiles, tbl_rev, pos;
604 int ret = 0;
605 u8 num_chains, num_sub_bands;
606
607 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD);
608 if (IS_ERR(data))
609 return PTR_ERR(data);
610
611 /* start by trying to read revision 2 */
612 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
613 ACPI_EWRD_WIFI_DATA_SIZE_REV2,
614 &tbl_rev);
615 if (!IS_ERR(wifi_pkg)) {
616 if (tbl_rev != 2) {
617 ret = PTR_ERR(wifi_pkg);
618 goto out_free;
619 }
620
621 num_chains = ACPI_SAR_NUM_CHAINS_REV2;
622 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;
623
624 goto read_table;
625 }
626
627 /* then try revision 1 */
628 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
629 ACPI_EWRD_WIFI_DATA_SIZE_REV1,
630 &tbl_rev);
631 if (!IS_ERR(wifi_pkg)) {
632 if (tbl_rev != 1) {
633 ret = PTR_ERR(wifi_pkg);
634 goto out_free;
635 }
636
637 num_chains = ACPI_SAR_NUM_CHAINS_REV1;
638 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;
639
640 goto read_table;
641 }
642
643 /* then finally revision 0 */
644 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
645 ACPI_EWRD_WIFI_DATA_SIZE_REV0,
646 &tbl_rev);
647 if (!IS_ERR(wifi_pkg)) {
648 if (tbl_rev != 0) {
649 ret = PTR_ERR(wifi_pkg);
650 goto out_free;
651 }
652
653 num_chains = ACPI_SAR_NUM_CHAINS_REV0;
654 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;
655
656 goto read_table;
657 }
658
659 ret = PTR_ERR(wifi_pkg);
660 goto out_free;
661
662 read_table:
663 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
664 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) {
665 ret = -EINVAL;
666 goto out_free;
667 }
668
669 enabled = !!(wifi_pkg->package.elements[1].integer.value);
670 n_profiles = wifi_pkg->package.elements[2].integer.value;
671
672 /*
673 * Check the validity of n_profiles. The EWRD profiles start
674 * from index 1, so the maximum value allowed here is
675 * ACPI_SAR_PROFILES_NUM - 1.
676 */
677 if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) {
678 ret = -EINVAL;
679 goto out_free;
680 }
681
682 /* the tables start at element 3 */
683 pos = 3;
684
685 for (i = 0; i < n_profiles; i++) {
686 /* The EWRD profiles officially go from 2 to 4, but we
687 * save them in sar_profiles[1-3] (because we don't
688 * have profile 0). So in the array we start from 1.
689 */
690 ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos],
691 &fwrt->sar_profiles[i + 1], enabled,
692 num_chains, num_sub_bands);
693 if (ret < 0)
694 break;
695
696 /* go to the next table */
697 pos += num_chains * num_sub_bands;
698 }
699
700 out_free:
701 kfree(data);
702 return ret;
703 }
704 IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table);
705
iwl_sar_get_wgds_table(struct iwl_fw_runtime * fwrt)706 int iwl_sar_get_wgds_table(struct iwl_fw_runtime *fwrt)
707 {
708 union acpi_object *wifi_pkg, *data;
709 int i, j, k, ret, tbl_rev;
710 int idx = 1; /* start from one to skip the domain */
711 u8 num_bands;
712
713 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD);
714 if (IS_ERR(data))
715 return PTR_ERR(data);
716
717 /* start by trying to read revision 2 */
718 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
719 ACPI_WGDS_WIFI_DATA_SIZE_REV2,
720 &tbl_rev);
721 if (!IS_ERR(wifi_pkg)) {
722 if (tbl_rev != 2) {
723 ret = PTR_ERR(wifi_pkg);
724 goto out_free;
725 }
726
727 num_bands = ACPI_GEO_NUM_BANDS_REV2;
728
729 goto read_table;
730 }
731
732 /* then try revision 0 (which is the same as 1) */
733 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
734 ACPI_WGDS_WIFI_DATA_SIZE_REV0,
735 &tbl_rev);
736 if (!IS_ERR(wifi_pkg)) {
737 if (tbl_rev != 0 && tbl_rev != 1) {
738 ret = PTR_ERR(wifi_pkg);
739 goto out_free;
740 }
741
742 num_bands = ACPI_GEO_NUM_BANDS_REV0;
743
744 goto read_table;
745 }
746
747 ret = PTR_ERR(wifi_pkg);
748 goto out_free;
749
750 read_table:
751 fwrt->geo_rev = tbl_rev;
752 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
753 for (j = 0; j < ACPI_GEO_NUM_BANDS_REV2; j++) {
754 union acpi_object *entry;
755
756 /*
757 * num_bands is either 2 or 3, if it's only 2 then
758 * fill the third band (6 GHz) with the values from
759 * 5 GHz (second band)
760 */
761 if (j >= num_bands) {
762 fwrt->geo_profiles[i].bands[j].max =
763 fwrt->geo_profiles[i].bands[1].max;
764 } else {
765 entry = &wifi_pkg->package.elements[idx++];
766 if (entry->type != ACPI_TYPE_INTEGER ||
767 entry->integer.value > U8_MAX) {
768 ret = -EINVAL;
769 goto out_free;
770 }
771
772 fwrt->geo_profiles[i].bands[j].max =
773 entry->integer.value;
774 }
775
776 for (k = 0; k < ACPI_GEO_NUM_CHAINS; k++) {
777 /* same here as above */
778 if (j >= num_bands) {
779 fwrt->geo_profiles[i].bands[j].chains[k] =
780 fwrt->geo_profiles[i].bands[1].chains[k];
781 } else {
782 entry = &wifi_pkg->package.elements[idx++];
783 if (entry->type != ACPI_TYPE_INTEGER ||
784 entry->integer.value > U8_MAX) {
785 ret = -EINVAL;
786 goto out_free;
787 }
788
789 fwrt->geo_profiles[i].bands[j].chains[k] =
790 entry->integer.value;
791 }
792 }
793 }
794 }
795
796 ret = 0;
797 out_free:
798 kfree(data);
799 return ret;
800 }
801 IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table);
802
iwl_sar_geo_support(struct iwl_fw_runtime * fwrt)803 bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt)
804 {
805 /*
806 * The GEO_TX_POWER_LIMIT command is not supported on earlier
807 * firmware versions. Unfortunately, we don't have a TLV API
808 * flag to rely on, so rely on the major version which is in
809 * the first byte of ucode_ver. This was implemented
810 * initially on version 38 and then backported to 17. It was
811 * also backported to 29, but only for 7265D devices. The
812 * intention was to have it in 36 as well, but not all 8000
813 * family got this feature enabled. The 8000 family is the
814 * only one using version 36, so skip this version entirely.
815 */
816 return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 ||
817 IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 ||
818 (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 &&
819 ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) ==
820 CSR_HW_REV_TYPE_7265D));
821 }
822 IWL_EXPORT_SYMBOL(iwl_sar_geo_support);
823
iwl_sar_geo_init(struct iwl_fw_runtime * fwrt,struct iwl_per_chain_offset * table,u32 n_bands)824 int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
825 struct iwl_per_chain_offset *table, u32 n_bands)
826 {
827 int i, j;
828
829 if (!iwl_sar_geo_support(fwrt))
830 return -EOPNOTSUPP;
831
832 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
833 for (j = 0; j < n_bands; j++) {
834 struct iwl_per_chain_offset *chain =
835 &table[i * n_bands + j];
836
837 chain->max_tx_power =
838 cpu_to_le16(fwrt->geo_profiles[i].bands[j].max);
839 chain->chain_a = fwrt->geo_profiles[i].bands[j].chains[0];
840 chain->chain_b = fwrt->geo_profiles[i].bands[j].chains[1];
841 IWL_DEBUG_RADIO(fwrt,
842 "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
843 i, j,
844 fwrt->geo_profiles[i].bands[j].chains[0],
845 fwrt->geo_profiles[i].bands[j].chains[1],
846 fwrt->geo_profiles[i].bands[j].max);
847 }
848 }
849
850 return 0;
851 }
852 IWL_EXPORT_SYMBOL(iwl_sar_geo_init);
853
iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime * fwrt)854 __le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt)
855 {
856 int ret;
857 u8 value;
858 __le32 config_bitmap = 0;
859
860 /*
861 ** Evaluate func 'DSM_FUNC_ENABLE_INDONESIA_5G2'
862 */
863 ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0,
864 DSM_FUNC_ENABLE_INDONESIA_5G2,
865 &iwl_guid, &value);
866
867 if (!ret && value == DSM_VALUE_INDONESIA_ENABLE)
868 config_bitmap |=
869 cpu_to_le32(LARI_CONFIG_ENABLE_5G2_IN_INDONESIA_MSK);
870
871 /*
872 ** Evaluate func 'DSM_FUNC_DISABLE_SRD'
873 */
874 ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0,
875 DSM_FUNC_DISABLE_SRD,
876 &iwl_guid, &value);
877 if (!ret) {
878 if (value == DSM_VALUE_SRD_PASSIVE)
879 config_bitmap |=
880 cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_PASSIVE_MSK);
881 else if (value == DSM_VALUE_SRD_DISABLE)
882 config_bitmap |=
883 cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_DISABLED_MSK);
884 }
885
886 return config_bitmap;
887 }
888 IWL_EXPORT_SYMBOL(iwl_acpi_get_lari_config_bitmap);
889
