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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2017 Intel Deutschland GmbH4 * Copyright (C) 2019-2024 Intel Corporation5 */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 12const guid_t iwl_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6,13 0xA5, 0xB3, 0x1F, 0x73,14 0x8E, 0x28, 0x5A, 0xDE);15 16static const size_t acpi_dsm_size[DSM_FUNC_NUM_FUNCS] = {17 [DSM_FUNC_QUERY] = sizeof(u32),18 [DSM_FUNC_DISABLE_SRD] = sizeof(u8),19 [DSM_FUNC_ENABLE_INDONESIA_5G2] = sizeof(u8),20 [DSM_FUNC_ENABLE_6E] = sizeof(u32),21 [DSM_FUNC_REGULATORY_CONFIG] = sizeof(u32),22 /* Not supported in driver */23 [5] = (size_t)0,24 [DSM_FUNC_11AX_ENABLEMENT] = sizeof(u32),25 [DSM_FUNC_ENABLE_UNII4_CHAN] = sizeof(u32),26 [DSM_FUNC_ACTIVATE_CHANNEL] = sizeof(u32),27 [DSM_FUNC_FORCE_DISABLE_CHANNELS] = sizeof(u32),28 [DSM_FUNC_ENERGY_DETECTION_THRESHOLD] = sizeof(u32),29 [DSM_FUNC_RFI_CONFIG] = sizeof(u32),30 [DSM_FUNC_ENABLE_11BE] = sizeof(u32),31};32 33static int iwl_acpi_get_handle(struct device *dev, acpi_string method,34 acpi_handle *ret_handle)35{36 acpi_handle root_handle;37 acpi_status status;38 39 root_handle = ACPI_HANDLE(dev);40 if (!root_handle) {41 IWL_DEBUG_DEV_RADIO(dev,42 "ACPI: Could not retrieve root port handle\n");43 return -ENOENT;44 }45 46 status = acpi_get_handle(root_handle, method, ret_handle);47 if (ACPI_FAILURE(status)) {48 IWL_DEBUG_DEV_RADIO(dev,49 "ACPI: %s method not found\n", method);50 return -ENOENT;51 }52 return 0;53}54 55static void *iwl_acpi_get_object(struct device *dev, acpi_string method)56{57 struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};58 acpi_handle handle;59 acpi_status status;60 int ret;61 62 ret = iwl_acpi_get_handle(dev, method, &handle);63 if (ret)64 return ERR_PTR(-ENOENT);65 66 /* Call the method with no arguments */67 status = acpi_evaluate_object(handle, NULL, NULL, &buf);68 if (ACPI_FAILURE(status)) {69 IWL_DEBUG_DEV_RADIO(dev,70 "ACPI: %s method invocation failed (status: 0x%x)\n",71 method, status);72 return ERR_PTR(-ENOENT);73 }74 return buf.pointer;75}76 77/*78 * Generic function for evaluating a method defined in the device specific79 * method (DSM) interface. The returned acpi object must be freed by calling80 * function.81 */82static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func,83 union acpi_object *args,84 const guid_t *guid)85{86 union acpi_object *obj;87 88 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), guid, rev, func,89 args);90 if (!obj) {91 IWL_DEBUG_DEV_RADIO(dev,92 "ACPI: DSM method invocation failed (rev: %d, func:%d)\n",93 rev, func);94 return ERR_PTR(-ENOENT);95 }96 return obj;97}98 99/*100 * Generic function to evaluate a DSM with no arguments101 * and an integer return value,102 * (as an integer object or inside a buffer object),103 * verify and assign the value in the "value" parameter.104 * return 0 in success and the appropriate errno otherwise.105 */106static int iwl_acpi_get_dsm_integer(struct device *dev, int rev, int func,107 const guid_t *guid, u64 *value,108 size_t expected_size)109{110 union acpi_object *obj;111 int ret = 0;112 113 obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL, guid);114 if (IS_ERR(obj)) {115 IWL_DEBUG_DEV_RADIO(dev,116 "Failed to get DSM object. func= %d\n",117 func);118 return -ENOENT;119 }120 121 if (obj->type == ACPI_TYPE_INTEGER) {122 *value = obj->integer.value;123 } else if (obj->type == ACPI_TYPE_BUFFER) {124 __le64 le_value = 0;125 126 if (WARN_ON_ONCE(expected_size > sizeof(le_value)))127 return -EINVAL;128 129 /* if the buffer size doesn't match the expected size */130 if (obj->buffer.length != expected_size)131 IWL_DEBUG_DEV_RADIO(dev,132 "ACPI: DSM invalid buffer size, padding or truncating (%d)\n",133 obj->buffer.length);134 135 /* assuming LE from Intel BIOS spec */136 memcpy(&le_value, obj->buffer.pointer,137 min_t(size_t, expected_size, (size_t)obj->buffer.length));138 *value = le64_to_cpu(le_value);139 } else {140 IWL_DEBUG_DEV_RADIO(dev,141 "ACPI: DSM method did not return a valid object, type=%d\n",142 obj->type);143 ret = -EINVAL;144 goto out;145 }146 147 IWL_DEBUG_DEV_RADIO(dev,148 "ACPI: DSM method evaluated: func=%d, ret=%d\n",149 func, ret);150out:151 ACPI_FREE(obj);152 return ret;153}154 155/*156 * This function receives a DSM function number, calculates its expected size157 * according to Intel BIOS spec, and fills in the value in a 32-bit field.158 * In case the expected size is smaller than 32-bit, padding will be added.159 */160int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt,161 enum iwl_dsm_funcs func, u32 *value)162{163 size_t expected_size;164 u64 tmp;165 int ret;166 167 BUILD_BUG_ON(ARRAY_SIZE(acpi_dsm_size) != DSM_FUNC_NUM_FUNCS);168 169 if (WARN_ON(func >= ARRAY_SIZE(acpi_dsm_size)))170 return -EINVAL;171 172 expected_size = acpi_dsm_size[func];173 174 /* Currently all ACPI DSMs are either 8-bit or 32-bit */175 if (expected_size != sizeof(u8) && expected_size != sizeof(u32))176 return -EOPNOTSUPP;177 178 ret = iwl_acpi_get_dsm_integer(fwrt->dev, ACPI_DSM_REV, func,179 &iwl_guid, &tmp, expected_size);180 if (ret)181 return ret;182 183 if ((expected_size == sizeof(u8) && tmp != (u8)tmp) ||184 (expected_size == sizeof(u32) && tmp != (u32)tmp))185 IWL_DEBUG_RADIO(fwrt,186 "DSM value overflows the expected size, truncating\n");187 *value = (u32)tmp;188 189 return 0;190}191 192static union acpi_object *193iwl_acpi_get_wifi_pkg_range(struct device *dev,194 union acpi_object *data,195 int min_data_size,196 int max_data_size,197 int *tbl_rev)198{199 int i;200 union acpi_object *wifi_pkg;201 202 /*203 * We need at least one entry in the wifi package that204 * describes the domain, and one more entry, otherwise there's205 * no point in reading it.206 */207 if (WARN_ON_ONCE(min_data_size < 2 || min_data_size > max_data_size))208 return ERR_PTR(-EINVAL);209 210 /*211 * We need at least two packages, one for the revision and one212 * for the data itself. Also check that the revision is valid213 * (i.e. it is an integer (each caller has to check by itself214 * if the returned revision is supported)).215 */216 if (data->type != ACPI_TYPE_PACKAGE ||217 data->package.count < 2 ||218 data->package.elements[0].type != ACPI_TYPE_INTEGER) {219 IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n");220 return ERR_PTR(-EINVAL);221 }222 223 *tbl_rev = data->package.elements[0].integer.value;224 225 /* loop through all the packages to find the one for WiFi */226 for (i = 1; i < data->package.count; i++) {227 union acpi_object *domain;228 229 wifi_pkg = &data->package.elements[i];230 231 /* skip entries that are not a package with the right size */232 if (wifi_pkg->type != ACPI_TYPE_PACKAGE ||233 wifi_pkg->package.count < min_data_size ||234 wifi_pkg->package.count > max_data_size)235 continue;236 237 domain = &wifi_pkg->package.elements[0];238 if (domain->type == ACPI_TYPE_INTEGER &&239 domain->integer.value == ACPI_WIFI_DOMAIN)240 goto found;241 }242 243 return ERR_PTR(-ENOENT);244 245found:246 return wifi_pkg;247}248 249static union acpi_object *250iwl_acpi_get_wifi_pkg(struct device *dev,251 union acpi_object *data,252 int data_size, int *tbl_rev)253{254 return iwl_acpi_get_wifi_pkg_range(dev, data, data_size, data_size,255 tbl_rev);256}257 258int iwl_acpi_get_tas_table(struct iwl_fw_runtime *fwrt,259 struct iwl_tas_data *tas_data)260{261 union acpi_object *wifi_pkg, *data;262 int ret, tbl_rev, i, block_list_size, enabled;263 264 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD);265 if (IS_ERR(data))266 return PTR_ERR(data);267 268 /* try to read wtas table revision 1 or revision 0*/269 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,270 ACPI_WTAS_WIFI_DATA_SIZE,271 &tbl_rev);272 if (IS_ERR(wifi_pkg)) {273 ret = PTR_ERR(wifi_pkg);274 goto out_free;275 }276 277 if (tbl_rev == 1 && wifi_pkg->package.elements[1].type ==278 ACPI_TYPE_INTEGER) {279 u32 tas_selection =280 (u32)wifi_pkg->package.elements[1].integer.value;281 282 enabled = iwl_parse_tas_selection(fwrt, tas_data,283 tas_selection);284 285 } else if (tbl_rev == 0 &&286 wifi_pkg->package.elements[1].type == ACPI_TYPE_INTEGER) {287 enabled = !!wifi_pkg->package.elements[1].integer.value;288 } else {289 ret = -EINVAL;290 goto out_free;291 }292 293 if (!enabled) {294 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n");295 ret = 0;296 goto out_free;297 }298 299 IWL_DEBUG_RADIO(fwrt, "Reading TAS table revision %d\n", tbl_rev);300 if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER ||301 wifi_pkg->package.elements[2].integer.value >302 IWL_WTAS_BLACK_LIST_MAX) {303 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n",304 wifi_pkg->package.elements[2].integer.value);305 ret = -EINVAL;306 goto out_free;307 }308 block_list_size = wifi_pkg->package.elements[2].integer.value;309 tas_data->block_list_size = cpu_to_le32(block_list_size);310 311 IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", block_list_size);312 313 for (i = 0; i < block_list_size; i++) {314 u32 country;315 316 if (wifi_pkg->package.elements[3 + i].type !=317 ACPI_TYPE_INTEGER) {318 IWL_DEBUG_RADIO(fwrt,319 "TAS invalid array elem %d\n", 3 + i);320 ret = -EINVAL;321 goto out_free;322 }323 324 country = wifi_pkg->package.elements[3 + i].integer.value;325 tas_data->block_list_array[i] = cpu_to_le32(country);326 IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country);327 }328 329 ret = 1;330out_free:331 kfree(data);332 return ret;333}334 335int iwl_acpi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc)336{337 union acpi_object *wifi_pkg, *data;338 u32 mcc_val;339 int ret, tbl_rev;340 341 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDD_METHOD);342 if (IS_ERR(data))343 return PTR_ERR(data);344 345 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,346 ACPI_WRDD_WIFI_DATA_SIZE,347 &tbl_rev);348 if (IS_ERR(wifi_pkg)) {349 ret = PTR_ERR(wifi_pkg);350 goto out_free;351 }352 353 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||354 tbl_rev != 0) {355 ret = -EINVAL;356 goto out_free;357 }358 359 mcc_val = wifi_pkg->package.elements[1].integer.value;360 if (mcc_val != BIOS_MCC_CHINA) {361 ret = -EINVAL;362 IWL_DEBUG_RADIO(fwrt, "ACPI WRDD is supported only for CN\n");363 goto out_free;364 }365 366 mcc[0] = (mcc_val >> 8) & 0xff;367 mcc[1] = mcc_val & 0xff;368 mcc[2] = '\0';369 370 ret = 0;371out_free:372 kfree(data);373 return ret;374}375 376int iwl_acpi_get_pwr_limit(struct iwl_fw_runtime *fwrt, u64 *dflt_pwr_limit)377{378 union acpi_object *data, *wifi_pkg;379 int tbl_rev, ret = -EINVAL;380 381 *dflt_pwr_limit = 0;382 data = iwl_acpi_get_object(fwrt->dev, ACPI_SPLC_METHOD);383 if (IS_ERR(data))384 goto out;385 386 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,387 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev);388 if (IS_ERR(wifi_pkg) || tbl_rev != 0 ||389 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER)390 goto out_free;391 392 *dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value;393 ret = 0;394out_free:395 kfree(data);396out:397 return ret;398}399 400int iwl_acpi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk)401{402 union acpi_object *wifi_pkg, *data;403 int ret, tbl_rev;404 405 data = iwl_acpi_get_object(fwrt->dev, ACPI_ECKV_METHOD);406 if (IS_ERR(data))407 return PTR_ERR(data);408 409 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,410 ACPI_ECKV_WIFI_DATA_SIZE,411 &tbl_rev);412 if (IS_ERR(wifi_pkg)) {413 ret = PTR_ERR(wifi_pkg);414 goto out_free;415 }416 417 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||418 tbl_rev != 0) {419 ret = -EINVAL;420 goto out_free;421 }422 423 *extl_clk = wifi_pkg->package.elements[1].integer.value;424 425 ret = 0;426 427out_free:428 kfree(data);429 return ret;430}431 432static int433iwl_acpi_parse_chains_table(union acpi_object *table,434 struct iwl_sar_profile_chain *chains,435 u8 num_chains, u8 num_sub_bands)436{437 for (u8 chain = 0; chain < num_chains; chain++) {438 for (u8 subband = 0; subband < BIOS_SAR_MAX_SUB_BANDS_NUM;439 subband++) {440 /* if we don't have the values, use the default */441 if (subband >= num_sub_bands) {442 chains[chain].subbands[subband] = 0;443 } else if (table->type != ACPI_TYPE_INTEGER ||444 table->integer.value > U8_MAX) {445 return -EINVAL;446 } else {447 chains[chain].subbands[subband] =448 table->integer.value;449 table++;450 }451 }452 }453 454 return 0;455}456 457int iwl_acpi_get_wrds_table(struct iwl_fw_runtime *fwrt)458{459 union acpi_object *wifi_pkg, *table, *data;460 int ret, tbl_rev;461 u32 flags;462 u8 num_chains, num_sub_bands;463 464 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);465 if (IS_ERR(data))466 return PTR_ERR(data);467 468 /* start by trying to read revision 2 */469 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,470 ACPI_WRDS_WIFI_DATA_SIZE_REV2,471 &tbl_rev);472 if (!IS_ERR(wifi_pkg)) {473 if (tbl_rev != 2) {474 ret = -EINVAL;475 goto out_free;476 }477 478 num_chains = ACPI_SAR_NUM_CHAINS_REV2;479 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;480 481 goto read_table;482 }483 484 /* then try revision 1 */485 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,486 ACPI_WRDS_WIFI_DATA_SIZE_REV1,487 &tbl_rev);488 if (!IS_ERR(wifi_pkg)) {489 if (tbl_rev != 1) {490 ret = -EINVAL;491 goto out_free;492 }493 494 num_chains = ACPI_SAR_NUM_CHAINS_REV1;495 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;496 497 goto read_table;498 }499 500 /* then finally revision 0 */501 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,502 ACPI_WRDS_WIFI_DATA_SIZE_REV0,503 &tbl_rev);504 if (!IS_ERR(wifi_pkg)) {505 if (tbl_rev != 0) {506 ret = -EINVAL;507 goto out_free;508 }509 510 num_chains = ACPI_SAR_NUM_CHAINS_REV0;511 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;512 513 goto read_table;514 }515 516 ret = PTR_ERR(wifi_pkg);517 goto out_free;518 519read_table:520 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {521 ret = -EINVAL;522 goto out_free;523 }524 525 IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev);526 527 flags = wifi_pkg->package.elements[1].integer.value;528 fwrt->reduced_power_flags = flags >> IWL_REDUCE_POWER_FLAGS_POS;529 530 /* position of the actual table */531 table = &wifi_pkg->package.elements[2];532 533 /* The profile from WRDS is officially profile 1, but goes534 * into sar_profiles[0] (because we don't have a profile 0).535 */536 ret = iwl_acpi_parse_chains_table(table, fwrt->sar_profiles[0].chains,537 num_chains, num_sub_bands);538 if (!ret && flags & IWL_SAR_ENABLE_MSK)539 fwrt->sar_profiles[0].enabled = true;540 541out_free:542 kfree(data);543 return ret;544}545 546int iwl_acpi_get_ewrd_table(struct iwl_fw_runtime *fwrt)547{548 union acpi_object *wifi_pkg, *data;549 bool enabled;550 int i, n_profiles, tbl_rev, pos;551 int ret = 0;552 u8 num_sub_bands;553 554 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD);555 if (IS_ERR(data))556 return PTR_ERR(data);557 558 /* start by trying to read revision 2 */559 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,560 ACPI_EWRD_WIFI_DATA_SIZE_REV2,561 &tbl_rev);562 if (!IS_ERR(wifi_pkg)) {563 if (tbl_rev != 2) {564 ret = -EINVAL;565 goto out_free;566 }567 568 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2;569 570 goto read_table;571 }572 573 /* then try revision 1 */574 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,575 ACPI_EWRD_WIFI_DATA_SIZE_REV1,576 &tbl_rev);577 if (!IS_ERR(wifi_pkg)) {578 if (tbl_rev != 1) {579 ret = -EINVAL;580 goto out_free;581 }582 583 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1;584 585 goto read_table;586 }587 588 /* then finally revision 0 */589 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,590 ACPI_EWRD_WIFI_DATA_SIZE_REV0,591 &tbl_rev);592 if (!IS_ERR(wifi_pkg)) {593 if (tbl_rev != 0) {594 ret = -EINVAL;595 goto out_free;596 }597 598 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0;599 600 goto read_table;601 }602 603 ret = PTR_ERR(wifi_pkg);604 goto out_free;605 606read_table:607 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||608 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) {609 ret = -EINVAL;610 goto out_free;611 }612 613 enabled = !!(wifi_pkg->package.elements[1].integer.value);614 n_profiles = wifi_pkg->package.elements[2].integer.value;615 616 /*617 * Check the validity of n_profiles. The EWRD profiles start618 * from index 1, so the maximum value allowed here is619 * ACPI_SAR_PROFILES_NUM - 1.620 */621 if (n_profiles >= BIOS_SAR_MAX_PROFILE_NUM) {622 ret = -EINVAL;623 goto out_free;624 }625 626 /* the tables start at element 3 */627 pos = 3;628 629 BUILD_BUG_ON(ACPI_SAR_NUM_CHAINS_REV0 != ACPI_SAR_NUM_CHAINS_REV1);630 BUILD_BUG_ON(ACPI_SAR_NUM_CHAINS_REV2 != 2 * ACPI_SAR_NUM_CHAINS_REV0);631 632 /* parse non-cdb chains for all profiles */633 for (i = 0; i < n_profiles; i++) {634 union acpi_object *table = &wifi_pkg->package.elements[pos];635 636 /* The EWRD profiles officially go from 2 to 4, but we637 * save them in sar_profiles[1-3] (because we don't638 * have profile 0). So in the array we start from 1.639 */640 ret = iwl_acpi_parse_chains_table(table,641 fwrt->sar_profiles[i + 1].chains,642 ACPI_SAR_NUM_CHAINS_REV0,643 num_sub_bands);644 if (ret < 0)645 goto out_free;646 647 /* go to the next table */648 pos += ACPI_SAR_NUM_CHAINS_REV0 * num_sub_bands;649 }650 651 /* non-cdb table revisions */652 if (tbl_rev < 2)653 goto set_enabled;654 655 /* parse cdb chains for all profiles */656 for (i = 0; i < n_profiles; i++) {657 struct iwl_sar_profile_chain *chains;658 union acpi_object *table;659 660 table = &wifi_pkg->package.elements[pos];661 chains = &fwrt->sar_profiles[i + 1].chains[ACPI_SAR_NUM_CHAINS_REV0];662 ret = iwl_acpi_parse_chains_table(table,663 chains,664 ACPI_SAR_NUM_CHAINS_REV0,665 num_sub_bands);666 if (ret < 0)667 goto out_free;668 669 /* go to the next table */670 pos += ACPI_SAR_NUM_CHAINS_REV0 * num_sub_bands;671 }672 673set_enabled:674 for (i = 0; i < n_profiles; i++)675 fwrt->sar_profiles[i + 1].enabled = enabled;676 677out_free:678 kfree(data);679 return ret;680}681 682int iwl_acpi_get_wgds_table(struct iwl_fw_runtime *fwrt)683{684 union acpi_object *wifi_pkg, *data;685 int i, j, k, ret, tbl_rev;686 u8 num_bands, num_profiles;687 static const struct {688 u8 revisions;689 u8 bands;690 u8 profiles;691 u8 min_profiles;692 } rev_data[] = {693 {694 .revisions = BIT(3),695 .bands = ACPI_GEO_NUM_BANDS_REV2,696 .profiles = ACPI_NUM_GEO_PROFILES_REV3,697 .min_profiles = BIOS_GEO_MIN_PROFILE_NUM,698 },699 {700 .revisions = BIT(2),701 .bands = ACPI_GEO_NUM_BANDS_REV2,702 .profiles = ACPI_NUM_GEO_PROFILES,703 },704 {705 .revisions = BIT(0) | BIT(1),706 .bands = ACPI_GEO_NUM_BANDS_REV0,707 .profiles = ACPI_NUM_GEO_PROFILES,708 },709 };710 int idx;711 /* start from one to skip the domain */712 int entry_idx = 1;713 714 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES_REV3 != IWL_NUM_GEO_PROFILES_V3);715 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES != IWL_NUM_GEO_PROFILES);716 717 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD);718 if (IS_ERR(data))719 return PTR_ERR(data);720 721 /* read the highest revision we understand first */722 for (idx = 0; idx < ARRAY_SIZE(rev_data); idx++) {723 /* min_profiles != 0 requires num_profiles header */724 u32 hdr_size = 1 + !!rev_data[idx].min_profiles;725 u32 profile_size = ACPI_GEO_PER_CHAIN_SIZE *726 rev_data[idx].bands;727 u32 max_size = hdr_size + profile_size * rev_data[idx].profiles;728 u32 min_size;729 730 if (!rev_data[idx].min_profiles)731 min_size = max_size;732 else733 min_size = hdr_size +734 profile_size * rev_data[idx].min_profiles;735 736 wifi_pkg = iwl_acpi_get_wifi_pkg_range(fwrt->dev, data,737 min_size, max_size,738 &tbl_rev);739 if (!IS_ERR(wifi_pkg)) {740 if (!(BIT(tbl_rev) & rev_data[idx].revisions))741 continue;742 743 num_bands = rev_data[idx].bands;744 num_profiles = rev_data[idx].profiles;745 746 if (rev_data[idx].min_profiles) {747 /* read header that says # of profiles */748 union acpi_object *entry;749 750 entry = &wifi_pkg->package.elements[entry_idx];751 entry_idx++;752 if (entry->type != ACPI_TYPE_INTEGER ||753 entry->integer.value > num_profiles ||754 entry->integer.value <755 rev_data[idx].min_profiles) {756 ret = -EINVAL;757 goto out_free;758 }759 760 /*761 * Check to see if we received package count762 * same as max # of profiles763 */764 if (wifi_pkg->package.count !=765 hdr_size + profile_size * num_profiles) {766 ret = -EINVAL;767 goto out_free;768 }769 770 /* Number of valid profiles */771 num_profiles = entry->integer.value;772 }773 goto read_table;774 }775 }776 777 if (idx < ARRAY_SIZE(rev_data))778 ret = PTR_ERR(wifi_pkg);779 else780 ret = -ENOENT;781 goto out_free;782 783read_table:784 fwrt->geo_rev = tbl_rev;785 for (i = 0; i < num_profiles; i++) {786 for (j = 0; j < BIOS_GEO_MAX_NUM_BANDS; j++) {787 union acpi_object *entry;788 789 /*790 * num_bands is either 2 or 3, if it's only 2 then791 * fill the third band (6 GHz) with the values from792 * 5 GHz (second band)793 */794 if (j >= num_bands) {795 fwrt->geo_profiles[i].bands[j].max =796 fwrt->geo_profiles[i].bands[1].max;797 } else {798 entry = &wifi_pkg->package.elements[entry_idx];799 entry_idx++;800 if (entry->type != ACPI_TYPE_INTEGER ||801 entry->integer.value > U8_MAX) {802 ret = -EINVAL;803 goto out_free;804 }805 806 fwrt->geo_profiles[i].bands[j].max =807 entry->integer.value;808 }809 810 for (k = 0; k < BIOS_GEO_NUM_CHAINS; k++) {811 /* same here as above */812 if (j >= num_bands) {813 fwrt->geo_profiles[i].bands[j].chains[k] =814 fwrt->geo_profiles[i].bands[1].chains[k];815 } else {816 entry = &wifi_pkg->package.elements[entry_idx];817 entry_idx++;818 if (entry->type != ACPI_TYPE_INTEGER ||819 entry->integer.value > U8_MAX) {820 ret = -EINVAL;821 goto out_free;822 }823 824 fwrt->geo_profiles[i].bands[j].chains[k] =825 entry->integer.value;826 }827 }828 }829 }830 831 fwrt->geo_num_profiles = num_profiles;832 fwrt->geo_enabled = true;833 ret = 0;834out_free:835 kfree(data);836 return ret;837}838 839int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt)840{841 union acpi_object *wifi_pkg, *data, *flags;842 int i, j, ret, tbl_rev, num_sub_bands = 0;843 int idx = 2;844 845 data = iwl_acpi_get_object(fwrt->dev, ACPI_PPAG_METHOD);846 if (IS_ERR(data))847 return PTR_ERR(data);848 849 /* try to read ppag table rev 3, 2 or 1 (all have the same data size) */850 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,851 ACPI_PPAG_WIFI_DATA_SIZE_V2, &tbl_rev);852 853 if (!IS_ERR(wifi_pkg)) {854 if (tbl_rev >= 1 && tbl_rev <= 3) {855 num_sub_bands = IWL_NUM_SUB_BANDS_V2;856 IWL_DEBUG_RADIO(fwrt,857 "Reading PPAG table (tbl_rev=%d)\n",858 tbl_rev);859 goto read_table;860 } else {861 ret = -EINVAL;862 goto out_free;863 }864 }865 866 /* try to read ppag table revision 0 */867 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,868 ACPI_PPAG_WIFI_DATA_SIZE_V1, &tbl_rev);869 870 if (!IS_ERR(wifi_pkg)) {871 if (tbl_rev != 0) {872 ret = -EINVAL;873 goto out_free;874 }875 num_sub_bands = IWL_NUM_SUB_BANDS_V1;876 IWL_DEBUG_RADIO(fwrt, "Reading PPAG table v1 (tbl_rev=0)\n");877 goto read_table;878 }879 880 ret = PTR_ERR(wifi_pkg);881 goto out_free;882 883read_table:884 fwrt->ppag_ver = tbl_rev;885 flags = &wifi_pkg->package.elements[1];886 887 if (flags->type != ACPI_TYPE_INTEGER) {888 ret = -EINVAL;889 goto out_free;890 }891 892 fwrt->ppag_flags = iwl_bios_get_ppag_flags(flags->integer.value,893 fwrt->ppag_ver);894 895 /*896 * read, verify gain values and save them into the PPAG table.897 * first sub-band (j=0) corresponds to Low-Band (2.4GHz), and the898 * following sub-bands to High-Band (5GHz).899 */900 for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) {901 for (j = 0; j < num_sub_bands; j++) {902 union acpi_object *ent;903 904 ent = &wifi_pkg->package.elements[idx++];905 if (ent->type != ACPI_TYPE_INTEGER) {906 ret = -EINVAL;907 goto out_free;908 }909 910 fwrt->ppag_chains[i].subbands[j] = ent->integer.value;911 }912 }913 914 ret = 0;915 916out_free:917 kfree(data);918 return ret;919}920 921void iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt,922 struct iwl_phy_specific_cfg *filters)923{924 struct iwl_phy_specific_cfg tmp = {};925 union acpi_object *wifi_pkg, *data;926 int tbl_rev, i;927 928 data = iwl_acpi_get_object(fwrt->dev, ACPI_WPFC_METHOD);929 if (IS_ERR(data))930 return;931 932 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,933 ACPI_WPFC_WIFI_DATA_SIZE,934 &tbl_rev);935 if (IS_ERR(wifi_pkg))936 goto out_free;937 938 if (tbl_rev != 0)939 goto out_free;940 941 BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) !=942 ACPI_WPFC_WIFI_DATA_SIZE - 1);943 944 for (i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) {945 if (wifi_pkg->package.elements[i + 1].type != ACPI_TYPE_INTEGER)946 goto out_free;947 tmp.filter_cfg_chains[i] =948 cpu_to_le32(wifi_pkg->package.elements[i + 1].integer.value);949 }950 951 IWL_DEBUG_RADIO(fwrt, "Loaded WPFC filter config from ACPI\n");952 *filters = tmp;953out_free:954 kfree(data);955}956IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters);957 958void iwl_acpi_get_guid_lock_status(struct iwl_fw_runtime *fwrt)959{960 union acpi_object *wifi_pkg, *data;961 int tbl_rev;962 963 data = iwl_acpi_get_object(fwrt->dev, ACPI_GLAI_METHOD);964 if (IS_ERR(data))965 return;966 967 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,968 ACPI_GLAI_WIFI_DATA_SIZE,969 &tbl_rev);970 if (IS_ERR(wifi_pkg))971 goto out_free;972 973 if (tbl_rev != 0) {974 IWL_DEBUG_RADIO(fwrt, "Invalid GLAI revision: %d\n", tbl_rev);975 goto out_free;976 }977 978 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER ||979 wifi_pkg->package.elements[1].integer.value > ACPI_GLAI_MAX_STATUS)980 goto out_free;981 982 fwrt->uefi_tables_lock_status =983 wifi_pkg->package.elements[1].integer.value;984 985 IWL_DEBUG_RADIO(fwrt,986 "Loaded UEFI WIFI GUID lock status: %d from ACPI\n",987 fwrt->uefi_tables_lock_status);988out_free:989 kfree(data);990}991IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status);992 993int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value)994{995 union acpi_object *wifi_pkg, *data;996 int ret = -ENOENT;997 int tbl_rev;998 999 data = iwl_acpi_get_object(fwrt->dev, ACPI_WBEM_METHOD);1000 if (IS_ERR(data))1001 return ret;1002 1003 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,1004 ACPI_WBEM_WIFI_DATA_SIZE,1005 &tbl_rev);1006 if (IS_ERR(wifi_pkg))1007 goto out_free;1008 1009 if (tbl_rev != IWL_ACPI_WBEM_REVISION) {1010 IWL_DEBUG_RADIO(fwrt, "Unsupported ACPI WBEM revision:%d\n",1011 tbl_rev);1012 goto out_free;1013 }1014 1015 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER)1016 goto out_free;1017 1018 *value = wifi_pkg->package.elements[1].integer.value &1019 IWL_ACPI_WBEM_REV0_MASK;1020 IWL_DEBUG_RADIO(fwrt, "Loaded WBEM config from ACPI\n");1021 ret = 0;1022out_free:1023 kfree(data);1024 return ret;1025}1026