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_range(struct device * dev,union acpi_object * data,int min_data_size,int max_data_size,int * tbl_rev)187 union acpi_object *iwl_acpi_get_wifi_pkg_range(struct device *dev,
188 union acpi_object *data,
189 int min_data_size,
190 int max_data_size,
191 int *tbl_rev)
192 {
193 int i;
194 union acpi_object *wifi_pkg;
195
196 /*
197 * We need at least one entry in the wifi package that
198 * describes the domain, and one more entry, otherwise there's
199 * no point in reading it.
200 */
201 if (WARN_ON_ONCE(min_data_size < 2 || min_data_size > max_data_size))
202 return ERR_PTR(-EINVAL);
203
204 /*
205 * We need at least two packages, one for the revision and one
206 * for the data itself. Also check that the revision is valid
207 * (i.e. it is an integer (each caller has to check by itself
208 * if the returned revision is supported)).
209 */
210 if (data->type != ACPI_TYPE_PACKAGE ||
211 data->package.count < 2 ||
212 data->package.elements[0].type != ACPI_TYPE_INTEGER) {
213 IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n");
214 return ERR_PTR(-EINVAL);
215 }
216
217 *tbl_rev = data->package.elements[0].integer.value;
218
219 /* loop through all the packages to find the one for WiFi */
220 for (i = 1; i < data->package.count; i++) {
221 union acpi_object *domain;
222
223 wifi_pkg = &data->package.elements[i];
224
225 /* skip entries that are not a package with the right size */
226 if (wifi_pkg->type != ACPI_TYPE_PACKAGE ||
227 wifi_pkg->package.count < min_data_size ||
228 wifi_pkg->package.count > max_data_size)
229 continue;
230
231 domain = &wifi_pkg->package.elements[0];
232 if (domain->type == ACPI_TYPE_INTEGER &&
233 domain->integer.value == ACPI_WIFI_DOMAIN)
234 goto found;
235 }
236
237 return ERR_PTR(-ENOENT);
238
239 found:
240 return wifi_pkg;
241 }
242 IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg_range);
243
iwl_acpi_get_tas(struct iwl_fw_runtime * fwrt,__le32 * block_list_array,int * block_list_size)244 int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt,
245 __le32 *block_list_array,
246 int *block_list_size)
247 {
248 union acpi_object *wifi_pkg, *data;
249 int ret, tbl_rev, i;
250 bool enabled;
251
252 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);
253 if (IS_ERR(data))
254 return PTR_ERR(data);
255
256 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
257 ACPI_WTAS_WIFI_DATA_SIZE,
258 &tbl_rev);
259 if (IS_ERR(wifi_pkg)) {
260 ret = PTR_ERR(wifi_pkg);
261 goto out_free;
262 }
263
264 if (wifi_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
265 tbl_rev != 0) {
266 ret = -EINVAL;
267 goto out_free;
268 }
269
270 enabled = !!wifi_pkg->package.elements[1].integer.value;
271
272 if (!enabled) {
273 *block_list_size = -1;
274 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");
275 ret = 0;
276 goto out_free;
277 }
278
279 if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER ||
280 wifi_pkg->package.elements[2].integer.value >
281 APCI_WTAS_BLACK_LIST_MAX) {
282 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",
283 wifi_pkg->package.elements[1].integer.value);
284 ret = -EINVAL;
285 goto out_free;
286 }
287 *block_list_size = wifi_pkg->package.elements[2].integer.value;
288
289 IWL_DEBUG_RADIO(fwrt, "TAS array size %d\n", *block_list_size);
290 if (*block_list_size > APCI_WTAS_BLACK_LIST_MAX) {
291 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n",
292 *block_list_size);
293 ret = -EINVAL;
294 goto out_free;
295 }
296
297 for (i = 0; i < *block_list_size; i++) {
298 u32 country;
299
300 if (wifi_pkg->package.elements[3 + i].type !=
301 ACPI_TYPE_INTEGER) {
302 IWL_DEBUG_RADIO(fwrt,
303 "TAS invalid array elem %d\n", 3 + i);
304 ret = -EINVAL;
305 goto out_free;
306 }
307
308 country = wifi_pkg->package.elements[3 + i].integer.value;
309 block_list_array[i] = cpu_to_le32(country);
310 IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country);
311 }
312
313 ret = 0;
314 out_free:
315 kfree(data);
316 return ret;
317 }
318 IWL_EXPORT_SYMBOL(iwl_acpi_get_tas);
319
iwl_acpi_get_mcc(struct device * dev,char * mcc)320 int iwl_acpi_get_mcc(struct device *dev, char *mcc)
321 {
322 union acpi_object *wifi_pkg, *data;
323 u32 mcc_val;
324 int ret, tbl_rev;
325
326 data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD);
327 if (IS_ERR(data))
328 return PTR_ERR(data);
329
330 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_WRDD_WIFI_DATA_SIZE,
331 &tbl_rev);
332 if (IS_ERR(wifi_pkg)) {
333 ret = PTR_ERR(wifi_pkg);
334 goto out_free;
335 }
336
337 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
338 tbl_rev != 0) {
339 ret = -EINVAL;
340 goto out_free;
341 }
342
343 mcc_val = wifi_pkg->package.elements[1].integer.value;
344
345 mcc[0] = (mcc_val >> 8) & 0xff;
346 mcc[1] = mcc_val & 0xff;
347 mcc[2] = '\0';
348
349 ret = 0;
350 out_free:
351 kfree(data);
352 return ret;
353 }
354 IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc);
355
iwl_acpi_get_pwr_limit(struct device * dev)356 u64 iwl_acpi_get_pwr_limit(struct device *dev)
357 {
358 union acpi_object *data, *wifi_pkg;
359 u64 dflt_pwr_limit;
360 int tbl_rev;
361
362 data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD);
363 if (IS_ERR(data)) {
364 dflt_pwr_limit = 0;
365 goto out;
366 }
367
368 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data,
369 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev);
370 if (IS_ERR(wifi_pkg) || tbl_rev != 0 ||
371 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) {
372 dflt_pwr_limit = 0;
373 goto out_free;
374 }
375
376 dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value;
377 out_free:
378 kfree(data);
379 out:
380 return dflt_pwr_limit;
381 }
382 IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit);
383
iwl_acpi_get_eckv(struct device * dev,u32 * extl_clk)384 int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk)
385 {
386 union acpi_object *wifi_pkg, *data;
387 int ret, tbl_rev;
388
389 data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD);
390 if (IS_ERR(data))
391 return PTR_ERR(data);
392
393 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE,
394 &tbl_rev);
395 if (IS_ERR(wifi_pkg)) {
396 ret = PTR_ERR(wifi_pkg);
397 goto out_free;
398 }
399
400 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
401 tbl_rev != 0) {
402 ret = -EINVAL;
403 goto out_free;
404 }
405
406 *extl_clk = wifi_pkg->package.elements[1].integer.value;
407
408 ret = 0;
409
410 out_free:
411 kfree(data);
412 return ret;
413 }
414 IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv);
415
iwl_sar_set_profile(union acpi_object * table,struct iwl_sar_profile * profile,bool enabled,u8 num_chains,u8 num_sub_bands)416 static int iwl_sar_set_profile(union acpi_object *table,
417 struct iwl_sar_profile *profile,
418 bool enabled, u8 num_chains, u8 num_sub_bands)
419 {
420 int i, j, idx = 0;
421
422 /*
423 * The table from ACPI is flat, but we store it in a
424 * structured array.
425 */
426 for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV2; i++) {
427 for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS_REV2; j++) {
428 /* if we don't have the values, use the default */
429 if (i >= num_chains || j >= num_sub_bands) {
430 profile->chains[i].subbands[j] = 0;
431 } else {
432 if (table[idx].type != ACPI_TYPE_INTEGER ||
433 table[idx].integer.value > U8_MAX)
434 return -EINVAL;
435
436 profile->chains[i].subbands[j] =
437 table[idx].integer.value;
438
439 idx++;
440 }
441 }
442 }
443
444 /* Only if all values were valid can the profile be enabled */
445 profile->enabled = enabled;
446
447 return 0;
448 }
449
iwl_sar_fill_table(struct iwl_fw_runtime * fwrt,__le16 * per_chain,u32 n_subbands,int prof_a,int prof_b)450 static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt,
451 __le16 *per_chain, u32 n_subbands,
452 int prof_a, int prof_b)
453 {
454 int profs[ACPI_SAR_NUM_CHAINS_REV0] = { prof_a, prof_b };
455 int i, j;
456
457 for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV0; i++) {
458 struct iwl_sar_profile *prof;
459
460 /* don't allow SAR to be disabled (profile 0 means disable) */
461 if (profs[i] == 0)
462 return -EPERM;
463
464 /* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */
465 if (profs[i] > ACPI_SAR_PROFILE_NUM)
466 return -EINVAL;
467
468 /* profiles go from 1 to 4, so decrement to access the array */
469 prof = &fwrt->sar_profiles[profs[i] - 1];
470
471 /* if the profile is disabled, do nothing */
472 if (!prof->enabled) {
473 IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n",
474 profs[i]);
475 /*
476 * if one of the profiles is disabled, we
477 * ignore all of them and return 1 to
478 * differentiate disabled from other failures.
479 */
480 return 1;
481 }
482
483 IWL_DEBUG_INFO(fwrt,
484 "SAR EWRD: chain %d profile index %d\n",
485 i, profs[i]);
486 IWL_DEBUG_RADIO(fwrt, " Chain[%d]:\n", i);
487 for (j = 0; j < n_subbands; j++) {
488 per_chain[i * n_subbands + j] =
489 cpu_to_le16(prof->chains[i].subbands[j]);
490 IWL_DEBUG_RADIO(fwrt, " Band[%d] = %d * .125dBm\n",
491 j, prof->chains[i].subbands[j]);
492 }
493 }
494
495 return 0;
496 }
497
iwl_sar_select_profile(struct iwl_fw_runtime * fwrt,__le16 * per_chain,u32 n_tables,u32 n_subbands,int prof_a,int prof_b)498 int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt,
499 __le16 *per_chain, u32 n_tables, u32 n_subbands,
500 int prof_a, int prof_b)
501 {
502 int i, ret = 0;
503
504 for (i = 0; i < n_tables; i++) {
505 ret = iwl_sar_fill_table(fwrt,
506 &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAINS_REV0],
507 n_subbands, prof_a, prof_b);
508 if (ret)
509 break;
510 }
511
512 return ret;
513 }
514 IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
515
iwl_sar_get_wrds_table(struct iwl_fw_runtime * fwrt)516 int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
517 {
518 union acpi_object *wifi_pkg, *table, *data;
519 bool enabled;
520 int ret, tbl_rev;
521 u8 num_chains, num_sub_bands;
522
523 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);
524 if (IS_ERR(data))
525 return PTR_ERR(data);
526
527 /* start by trying to read revision 2 */
528 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
529 ACPI_WRDS_WIFI_DATA_SIZE_REV2,
530 &tbl_rev);
531 if (!IS_ERR(wifi_pkg)) {
532 if (tbl_rev != 2) {
533 ret = PTR_ERR(wifi_pkg);
534 goto out_free;
535 }
536
537 num_chains = ACPI_SAR_NUM_CHAINS_REV2;
538 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;
539
540 goto read_table;
541 }
542
543 /* then try revision 1 */
544 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
545 ACPI_WRDS_WIFI_DATA_SIZE_REV1,
546 &tbl_rev);
547 if (!IS_ERR(wifi_pkg)) {
548 if (tbl_rev != 1) {
549 ret = PTR_ERR(wifi_pkg);
550 goto out_free;
551 }
552
553 num_chains = ACPI_SAR_NUM_CHAINS_REV1;
554 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;
555
556 goto read_table;
557 }
558
559 /* then finally revision 0 */
560 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
561 ACPI_WRDS_WIFI_DATA_SIZE_REV0,
562 &tbl_rev);
563 if (!IS_ERR(wifi_pkg)) {
564 if (tbl_rev != 0) {
565 ret = PTR_ERR(wifi_pkg);
566 goto out_free;
567 }
568
569 num_chains = ACPI_SAR_NUM_CHAINS_REV0;
570 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;
571
572 goto read_table;
573 }
574
575 ret = PTR_ERR(wifi_pkg);
576 goto out_free;
577
578 read_table:
579 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
580 ret = -EINVAL;
581 goto out_free;
582 }
583
584 IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev);
585
586 enabled = !!(wifi_pkg->package.elements[1].integer.value);
587
588 /* position of the actual table */
589 table = &wifi_pkg->package.elements[2];
590
591 /* The profile from WRDS is officially profile 1, but goes
592 * into sar_profiles[0] (because we don't have a profile 0).
593 */
594 ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0], enabled,
595 num_chains, num_sub_bands);
596 out_free:
597 kfree(data);
598 return ret;
599 }
600 IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table);
601
iwl_sar_get_ewrd_table(struct iwl_fw_runtime * fwrt)602 int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt)
603 {
604 union acpi_object *wifi_pkg, *data;
605 bool enabled;
606 int i, n_profiles, tbl_rev, pos;
607 int ret = 0;
608 u8 num_chains, num_sub_bands;
609
610 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD);
611 if (IS_ERR(data))
612 return PTR_ERR(data);
613
614 /* start by trying to read revision 2 */
615 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
616 ACPI_EWRD_WIFI_DATA_SIZE_REV2,
617 &tbl_rev);
618 if (!IS_ERR(wifi_pkg)) {
619 if (tbl_rev != 2) {
620 ret = PTR_ERR(wifi_pkg);
621 goto out_free;
622 }
623
624 num_chains = ACPI_SAR_NUM_CHAINS_REV2;
625 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;
626
627 goto read_table;
628 }
629
630 /* then try revision 1 */
631 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
632 ACPI_EWRD_WIFI_DATA_SIZE_REV1,
633 &tbl_rev);
634 if (!IS_ERR(wifi_pkg)) {
635 if (tbl_rev != 1) {
636 ret = PTR_ERR(wifi_pkg);
637 goto out_free;
638 }
639
640 num_chains = ACPI_SAR_NUM_CHAINS_REV1;
641 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;
642
643 goto read_table;
644 }
645
646 /* then finally revision 0 */
647 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
648 ACPI_EWRD_WIFI_DATA_SIZE_REV0,
649 &tbl_rev);
650 if (!IS_ERR(wifi_pkg)) {
651 if (tbl_rev != 0) {
652 ret = PTR_ERR(wifi_pkg);
653 goto out_free;
654 }
655
656 num_chains = ACPI_SAR_NUM_CHAINS_REV0;
657 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;
658
659 goto read_table;
660 }
661
662 ret = PTR_ERR(wifi_pkg);
663 goto out_free;
664
665 read_table:
666 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||
667 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) {
668 ret = -EINVAL;
669 goto out_free;
670 }
671
672 enabled = !!(wifi_pkg->package.elements[1].integer.value);
673 n_profiles = wifi_pkg->package.elements[2].integer.value;
674
675 /*
676 * Check the validity of n_profiles. The EWRD profiles start
677 * from index 1, so the maximum value allowed here is
678 * ACPI_SAR_PROFILES_NUM - 1.
679 */
680 if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) {
681 ret = -EINVAL;
682 goto out_free;
683 }
684
685 /* the tables start at element 3 */
686 pos = 3;
687
688 for (i = 0; i < n_profiles; i++) {
689 /* The EWRD profiles officially go from 2 to 4, but we
690 * save them in sar_profiles[1-3] (because we don't
691 * have profile 0). So in the array we start from 1.
692 */
693 ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos],
694 &fwrt->sar_profiles[i + 1], enabled,
695 num_chains, num_sub_bands);
696 if (ret < 0)
697 break;
698
699 /* go to the next table */
700 pos += num_chains * num_sub_bands;
701 }
702
703 out_free:
704 kfree(data);
705 return ret;
706 }
707 IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table);
708
iwl_sar_get_wgds_table(struct iwl_fw_runtime * fwrt)709 int iwl_sar_get_wgds_table(struct iwl_fw_runtime *fwrt)
710 {
711 union acpi_object *wifi_pkg, *data;
712 int i, j, k, ret, tbl_rev;
713 u8 num_bands, num_profiles;
714 static const struct {
715 u8 revisions;
716 u8 bands;
717 u8 profiles;
718 u8 min_profiles;
719 } rev_data[] = {
720 {
721 .revisions = BIT(3),
722 .bands = ACPI_GEO_NUM_BANDS_REV2,
723 .profiles = ACPI_NUM_GEO_PROFILES_REV3,
724 .min_profiles = 3,
725 },
726 {
727 .revisions = BIT(2),
728 .bands = ACPI_GEO_NUM_BANDS_REV2,
729 .profiles = ACPI_NUM_GEO_PROFILES,
730 },
731 {
732 .revisions = BIT(0) | BIT(1),
733 .bands = ACPI_GEO_NUM_BANDS_REV0,
734 .profiles = ACPI_NUM_GEO_PROFILES,
735 },
736 };
737 int idx;
738 /* start from one to skip the domain */
739 int entry_idx = 1;
740
741 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES_REV3 != IWL_NUM_GEO_PROFILES_V3);
742 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES != IWL_NUM_GEO_PROFILES);
743
744 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD);
745 if (IS_ERR(data))
746 return PTR_ERR(data);
747
748 /* read the highest revision we understand first */
749 for (idx = 0; idx < ARRAY_SIZE(rev_data); idx++) {
750 /* min_profiles != 0 requires num_profiles header */
751 u32 hdr_size = 1 + !!rev_data[idx].min_profiles;
752 u32 profile_size = ACPI_GEO_PER_CHAIN_SIZE *
753 rev_data[idx].bands;
754 u32 max_size = hdr_size + profile_size * rev_data[idx].profiles;
755 u32 min_size;
756
757 if (!rev_data[idx].min_profiles)
758 min_size = max_size;
759 else
760 min_size = hdr_size +
761 profile_size * rev_data[idx].min_profiles;
762
763 wifi_pkg = iwl_acpi_get_wifi_pkg_range(fwrt->dev, data,
764 min_size, max_size,
765 &tbl_rev);
766 if (!IS_ERR(wifi_pkg)) {
767 if (!(BIT(tbl_rev) & rev_data[idx].revisions))
768 continue;
769
770 num_bands = rev_data[idx].bands;
771 num_profiles = rev_data[idx].profiles;
772
773 if (rev_data[idx].min_profiles) {
774 /* read header that says # of profiles */
775 union acpi_object *entry;
776
777 entry = &wifi_pkg->package.elements[entry_idx];
778 entry_idx++;
779 if (entry->type != ACPI_TYPE_INTEGER ||
780 entry->integer.value > num_profiles) {
781 ret = -EINVAL;
782 goto out_free;
783 }
784 num_profiles = entry->integer.value;
785
786 /*
787 * this also validates >= min_profiles since we
788 * otherwise wouldn't have gotten the data when
789 * looking up in ACPI
790 */
791 if (wifi_pkg->package.count !=
792 min_size + profile_size * num_profiles) {
793 ret = -EINVAL;
794 goto out_free;
795 }
796 }
797 goto read_table;
798 }
799 }
800
801 if (idx < ARRAY_SIZE(rev_data))
802 ret = PTR_ERR(wifi_pkg);
803 else
804 ret = -ENOENT;
805 goto out_free;
806
807 read_table:
808 fwrt->geo_rev = tbl_rev;
809 for (i = 0; i < num_profiles; i++) {
810 for (j = 0; j < ACPI_GEO_NUM_BANDS_REV2; j++) {
811 union acpi_object *entry;
812
813 /*
814 * num_bands is either 2 or 3, if it's only 2 then
815 * fill the third band (6 GHz) with the values from
816 * 5 GHz (second band)
817 */
818 if (j >= num_bands) {
819 fwrt->geo_profiles[i].bands[j].max =
820 fwrt->geo_profiles[i].bands[1].max;
821 } else {
822 entry = &wifi_pkg->package.elements[entry_idx];
823 entry_idx++;
824 if (entry->type != ACPI_TYPE_INTEGER ||
825 entry->integer.value > U8_MAX) {
826 ret = -EINVAL;
827 goto out_free;
828 }
829
830 fwrt->geo_profiles[i].bands[j].max =
831 entry->integer.value;
832 }
833
834 for (k = 0; k < ACPI_GEO_NUM_CHAINS; k++) {
835 /* same here as above */
836 if (j >= num_bands) {
837 fwrt->geo_profiles[i].bands[j].chains[k] =
838 fwrt->geo_profiles[i].bands[1].chains[k];
839 } else {
840 entry = &wifi_pkg->package.elements[entry_idx];
841 entry_idx++;
842 if (entry->type != ACPI_TYPE_INTEGER ||
843 entry->integer.value > U8_MAX) {
844 ret = -EINVAL;
845 goto out_free;
846 }
847
848 fwrt->geo_profiles[i].bands[j].chains[k] =
849 entry->integer.value;
850 }
851 }
852 }
853 }
854
855 ret = 0;
856 out_free:
857 kfree(data);
858 return ret;
859 }
860 IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table);
861
iwl_sar_geo_support(struct iwl_fw_runtime * fwrt)862 bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt)
863 {
864 /*
865 * The PER_CHAIN_LIMIT_OFFSET_CMD command is not supported on
866 * earlier firmware versions. Unfortunately, we don't have a
867 * TLV API flag to rely on, so rely on the major version which
868 * is in the first byte of ucode_ver. This was implemented
869 * initially on version 38 and then backported to 17. It was
870 * also backported to 29, but only for 7265D devices. The
871 * intention was to have it in 36 as well, but not all 8000
872 * family got this feature enabled. The 8000 family is the
873 * only one using version 36, so skip this version entirely.
874 */
875 return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 ||
876 IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 ||
877 (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 &&
878 ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) ==
879 CSR_HW_REV_TYPE_7265D));
880 }
881 IWL_EXPORT_SYMBOL(iwl_sar_geo_support);
882
iwl_sar_geo_init(struct iwl_fw_runtime * fwrt,struct iwl_per_chain_offset * table,u32 n_bands,u32 n_profiles)883 int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt,
884 struct iwl_per_chain_offset *table,
885 u32 n_bands, u32 n_profiles)
886 {
887 int i, j;
888
889 if (!iwl_sar_geo_support(fwrt))
890 return -EOPNOTSUPP;
891
892 for (i = 0; i < n_profiles; i++) {
893 for (j = 0; j < n_bands; j++) {
894 struct iwl_per_chain_offset *chain =
895 &table[i * n_bands + j];
896
897 chain->max_tx_power =
898 cpu_to_le16(fwrt->geo_profiles[i].bands[j].max);
899 chain->chain_a = fwrt->geo_profiles[i].bands[j].chains[0];
900 chain->chain_b = fwrt->geo_profiles[i].bands[j].chains[1];
901 IWL_DEBUG_RADIO(fwrt,
902 "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
903 i, j,
904 fwrt->geo_profiles[i].bands[j].chains[0],
905 fwrt->geo_profiles[i].bands[j].chains[1],
906 fwrt->geo_profiles[i].bands[j].max);
907 }
908 }
909
910 return 0;
911 }
912 IWL_EXPORT_SYMBOL(iwl_sar_geo_init);
913
iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime * fwrt)914 __le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt)
915 {
916 int ret;
917 u8 value;
918 __le32 config_bitmap = 0;
919
920 /*
921 ** Evaluate func 'DSM_FUNC_ENABLE_INDONESIA_5G2'
922 */
923 ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0,
924 DSM_FUNC_ENABLE_INDONESIA_5G2,
925 &iwl_guid, &value);
926
927 if (!ret && value == DSM_VALUE_INDONESIA_ENABLE)
928 config_bitmap |=
929 cpu_to_le32(LARI_CONFIG_ENABLE_5G2_IN_INDONESIA_MSK);
930
931 /*
932 ** Evaluate func 'DSM_FUNC_DISABLE_SRD'
933 */
934 ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0,
935 DSM_FUNC_DISABLE_SRD,
936 &iwl_guid, &value);
937 if (!ret) {
938 if (value == DSM_VALUE_SRD_PASSIVE)
939 config_bitmap |=
940 cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_PASSIVE_MSK);
941 else if (value == DSM_VALUE_SRD_DISABLE)
942 config_bitmap |=
943 cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_DISABLED_MSK);
944 }
945
946 return config_bitmap;
947 }
948 IWL_EXPORT_SYMBOL(iwl_acpi_get_lari_config_bitmap);
949