1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2/* 3 * Copyright (C) 2017 Intel Deutschland GmbH 4 * Copyright (C) 2019-2023 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 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}; 31 32static int iwl_acpi_get_handle(struct device *dev, acpi_string method, 33 acpi_handle *ret_handle) 34{ 35 acpi_handle root_handle; 36 acpi_status status; 37 38 root_handle = ACPI_HANDLE(dev); 39 if (!root_handle) { 40 IWL_DEBUG_DEV_RADIO(dev, 41 "ACPI: Could not retrieve root port handle\n"); 42 return -ENOENT; 43 } 44 45 status = acpi_get_handle(root_handle, method, ret_handle); 46 if (ACPI_FAILURE(status)) { 47 IWL_DEBUG_DEV_RADIO(dev, 48 "ACPI: %s method not found\n", method); 49 return -ENOENT; 50 } 51 return 0; 52} 53 54static void *iwl_acpi_get_object(struct device *dev, acpi_string method) 55{ 56 struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; 57 acpi_handle handle; 58 acpi_status status; 59 int ret; 60 61 ret = iwl_acpi_get_handle(dev, method, &handle); 62 if (ret) 63 return ERR_PTR(-ENOENT); 64 65 /* Call the method with no arguments */ 66 status = acpi_evaluate_object(handle, NULL, NULL, &buf); 67 if (ACPI_FAILURE(status)) { 68 IWL_DEBUG_DEV_RADIO(dev, 69 "ACPI: %s method invocation failed (status: 0x%x)\n", 70 method, status); 71 return ERR_PTR(-ENOENT); 72 } 73 return buf.pointer; 74} 75 76/* 77 * Generic function for evaluating a method defined in the device specific 78 * method (DSM) interface. The returned acpi object must be freed by calling 79 * function. 80 */ 81static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func, 82 union acpi_object *args, 83 const guid_t *guid) 84{ 85 union acpi_object *obj; 86 87 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), guid, rev, func, 88 args); 89 if (!obj) { 90 IWL_DEBUG_DEV_RADIO(dev, 91 "ACPI: DSM method invocation failed (rev: %d, func:%d)\n", 92 rev, func); 93 return ERR_PTR(-ENOENT); 94 } 95 return obj; 96} 97 98/* 99 * Generic function to evaluate a DSM with no arguments 100 * and an integer return value, 101 * (as an integer object or inside a buffer object), 102 * verify and assign the value in the "value" parameter. 103 * return 0 in success and the appropriate errno otherwise. 104 */ 105static int iwl_acpi_get_dsm_integer(struct device *dev, int rev, int func, 106 const guid_t *guid, u64 *value, 107 size_t expected_size) 108{ 109 union acpi_object *obj; 110 int ret = 0; 111 112 obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL, guid); 113 if (IS_ERR(obj)) { 114 IWL_DEBUG_DEV_RADIO(dev, 115 "Failed to get DSM object. func= %d\n", 116 func); 117 return -ENOENT; 118 } 119 120 if (obj->type == ACPI_TYPE_INTEGER) { 121 *value = obj->integer.value; 122 } else if (obj->type == ACPI_TYPE_BUFFER) { 123 __le64 le_value = 0; 124 125 if (WARN_ON_ONCE(expected_size > sizeof(le_value))) 126 return -EINVAL; 127 128 /* if the buffer size doesn't match the expected size */ 129 if (obj->buffer.length != expected_size) 130 IWL_DEBUG_DEV_RADIO(dev, 131 "ACPI: DSM invalid buffer size, padding or truncating (%d)\n", 132 obj->buffer.length); 133 134 /* assuming LE from Intel BIOS spec */ 135 memcpy(&le_value, obj->buffer.pointer, 136 min_t(size_t, expected_size, (size_t)obj->buffer.length)); 137 *value = le64_to_cpu(le_value); 138 } else { 139 IWL_DEBUG_DEV_RADIO(dev, 140 "ACPI: DSM method did not return a valid object, type=%d\n", 141 obj->type); 142 ret = -EINVAL; 143 goto out; 144 } 145 146 IWL_DEBUG_DEV_RADIO(dev, 147 "ACPI: DSM method evaluated: func=%d, ret=%d\n", 148 func, ret); 149out: 150 ACPI_FREE(obj); 151 return ret; 152} 153 154/* 155 * This function receives a DSM function number, calculates its expected size 156 * according to Intel BIOS spec, and fills in the value in a 32-bit field. 157 * In case the expected size is smaller than 32-bit, padding will be added. 158 */ 159int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt, 160 enum iwl_dsm_funcs func, u32 *value) 161{ 162 size_t expected_size; 163 u64 tmp; 164 int ret; 165 166 BUILD_BUG_ON(ARRAY_SIZE(acpi_dsm_size) != DSM_FUNC_NUM_FUNCS); 167 168 if (WARN_ON(func >= ARRAY_SIZE(acpi_dsm_size))) 169 return -EINVAL; 170 171 expected_size = acpi_dsm_size[func]; 172 173 /* Currently all ACPI DSMs are either 8-bit or 32-bit */ 174 if (expected_size != sizeof(u8) && expected_size != sizeof(u32)) 175 return -EOPNOTSUPP; 176 177 ret = iwl_acpi_get_dsm_integer(fwrt->dev, ACPI_DSM_REV, func, 178 &iwl_guid, &tmp, expected_size); 179 if (ret) 180 return ret; 181 182 if ((expected_size == sizeof(u8) && tmp != (u8)tmp) || 183 (expected_size == sizeof(u32) && tmp != (u32)tmp)) 184 IWL_DEBUG_RADIO(fwrt, 185 "DSM value overflows the expected size, truncating\n"); 186 *value = (u32)tmp; 187 188 return 0; 189} 190 191static union acpi_object * 192iwl_acpi_get_wifi_pkg_range(struct device *dev, 193 union acpi_object *data, 194 int min_data_size, 195 int max_data_size, 196 int *tbl_rev) 197{ 198 int i; 199 union acpi_object *wifi_pkg; 200 201 /* 202 * We need at least one entry in the wifi package that 203 * describes the domain, and one more entry, otherwise there's 204 * no point in reading it. 205 */ 206 if (WARN_ON_ONCE(min_data_size < 2 || min_data_size > max_data_size)) 207 return ERR_PTR(-EINVAL); 208 209 /* 210 * We need at least two packages, one for the revision and one 211 * for the data itself. Also check that the revision is valid 212 * (i.e. it is an integer (each caller has to check by itself 213 * if the returned revision is supported)). 214 */ 215 if (data->type != ACPI_TYPE_PACKAGE || 216 data->package.count < 2 || 217 data->package.elements[0].type != ACPI_TYPE_INTEGER) { 218 IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n"); 219 return ERR_PTR(-EINVAL); 220 } 221 222 *tbl_rev = data->package.elements[0].integer.value; 223 224 /* loop through all the packages to find the one for WiFi */ 225 for (i = 1; i < data->package.count; i++) { 226 union acpi_object *domain; 227 228 wifi_pkg = &data->package.elements[i]; 229 230 /* skip entries that are not a package with the right size */ 231 if (wifi_pkg->type != ACPI_TYPE_PACKAGE || 232 wifi_pkg->package.count < min_data_size || 233 wifi_pkg->package.count > max_data_size) 234 continue; 235 236 domain = &wifi_pkg->package.elements[0]; 237 if (domain->type == ACPI_TYPE_INTEGER && 238 domain->integer.value == ACPI_WIFI_DOMAIN) 239 goto found; 240 } 241 242 return ERR_PTR(-ENOENT); 243 244found: 245 return wifi_pkg; 246} 247 248static union acpi_object * 249iwl_acpi_get_wifi_pkg(struct device *dev, 250 union acpi_object *data, 251 int data_size, int *tbl_rev) 252{ 253 return iwl_acpi_get_wifi_pkg_range(dev, data, data_size, data_size, 254 tbl_rev); 255} 256 257int iwl_acpi_get_tas_table(struct iwl_fw_runtime *fwrt, 258 struct iwl_tas_data *tas_data) 259{ 260 union acpi_object *wifi_pkg, *data; 261 int ret, tbl_rev, i, block_list_size, enabled; 262 263 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD); 264 if (IS_ERR(data)) 265 return PTR_ERR(data); 266 267 /* try to read wtas table revision 1 or revision 0*/ 268 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 269 ACPI_WTAS_WIFI_DATA_SIZE, 270 &tbl_rev); 271 if (IS_ERR(wifi_pkg)) { 272 ret = PTR_ERR(wifi_pkg); 273 goto out_free; 274 } 275 276 if (tbl_rev == 1 && wifi_pkg->package.elements[1].type == 277 ACPI_TYPE_INTEGER) { 278 u32 tas_selection = 279 (u32)wifi_pkg->package.elements[1].integer.value; 280 281 enabled = iwl_parse_tas_selection(fwrt, tas_data, 282 tas_selection); 283 284 } else if (tbl_rev == 0 && 285 wifi_pkg->package.elements[1].type == ACPI_TYPE_INTEGER) { 286 enabled = !!wifi_pkg->package.elements[1].integer.value; 287 } else { 288 ret = -EINVAL; 289 goto out_free; 290 } 291 292 if (!enabled) { 293 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n"); 294 ret = 0; 295 goto out_free; 296 } 297 298 IWL_DEBUG_RADIO(fwrt, "Reading TAS table revision %d\n", tbl_rev); 299 if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER || 300 wifi_pkg->package.elements[2].integer.value > 301 IWL_WTAS_BLACK_LIST_MAX) { 302 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n", 303 wifi_pkg->package.elements[2].integer.value); 304 ret = -EINVAL; 305 goto out_free; 306 } 307 block_list_size = wifi_pkg->package.elements[2].integer.value; 308 tas_data->block_list_size = cpu_to_le32(block_list_size); 309 310 IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", block_list_size); 311 312 for (i = 0; i < block_list_size; i++) { 313 u32 country; 314 315 if (wifi_pkg->package.elements[3 + i].type != 316 ACPI_TYPE_INTEGER) { 317 IWL_DEBUG_RADIO(fwrt, 318 "TAS invalid array elem %d\n", 3 + i); 319 ret = -EINVAL; 320 goto out_free; 321 } 322 323 country = wifi_pkg->package.elements[3 + i].integer.value; 324 tas_data->block_list_array[i] = cpu_to_le32(country); 325 IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country); 326 } 327 328 ret = 1; 329out_free: 330 kfree(data); 331 return ret; 332} 333 334int iwl_acpi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc) 335{ 336 union acpi_object *wifi_pkg, *data; 337 u32 mcc_val; 338 int ret, tbl_rev; 339 340 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDD_METHOD); 341 if (IS_ERR(data)) 342 return PTR_ERR(data); 343 344 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 345 ACPI_WRDD_WIFI_DATA_SIZE, 346 &tbl_rev); 347 if (IS_ERR(wifi_pkg)) { 348 ret = PTR_ERR(wifi_pkg); 349 goto out_free; 350 } 351 352 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 353 tbl_rev != 0) { 354 ret = -EINVAL; 355 goto out_free; 356 } 357 358 mcc_val = wifi_pkg->package.elements[1].integer.value; 359 360 mcc[0] = (mcc_val >> 8) & 0xff; 361 mcc[1] = mcc_val & 0xff; 362 mcc[2] = '\0'; 363 364 ret = 0; 365out_free: 366 kfree(data); 367 return ret; 368} 369 370int iwl_acpi_get_pwr_limit(struct iwl_fw_runtime *fwrt, u64 *dflt_pwr_limit) 371{ 372 union acpi_object *data, *wifi_pkg; 373 int tbl_rev, ret = -EINVAL; 374 375 *dflt_pwr_limit = 0; 376 data = iwl_acpi_get_object(fwrt->dev, ACPI_SPLC_METHOD); 377 if (IS_ERR(data)) 378 goto out; 379 380 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 381 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev); 382 if (IS_ERR(wifi_pkg) || tbl_rev != 0 || 383 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) 384 goto out_free; 385 386 *dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value; 387 ret = 0; 388out_free: 389 kfree(data); 390out: 391 return ret; 392} 393 394int iwl_acpi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) 395{ 396 union acpi_object *wifi_pkg, *data; 397 int ret, tbl_rev; 398 399 data = iwl_acpi_get_object(fwrt->dev, ACPI_ECKV_METHOD); 400 if (IS_ERR(data)) 401 return PTR_ERR(data); 402 403 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 404 ACPI_ECKV_WIFI_DATA_SIZE, 405 &tbl_rev); 406 if (IS_ERR(wifi_pkg)) { 407 ret = PTR_ERR(wifi_pkg); 408 goto out_free; 409 } 410 411 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 412 tbl_rev != 0) { 413 ret = -EINVAL; 414 goto out_free; 415 } 416 417 *extl_clk = wifi_pkg->package.elements[1].integer.value; 418 419 ret = 0; 420 421out_free: 422 kfree(data); 423 return ret; 424} 425 426static int iwl_acpi_sar_set_profile(union acpi_object *table, 427 struct iwl_sar_profile *profile, 428 bool enabled, u8 num_chains, 429 u8 num_sub_bands) 430{ 431 int i, j, idx = 0; 432 433 /* 434 * The table from ACPI is flat, but we store it in a 435 * structured array. 436 */ 437 for (i = 0; i < BIOS_SAR_MAX_CHAINS_PER_PROFILE; i++) { 438 for (j = 0; j < BIOS_SAR_MAX_SUB_BANDS_NUM; j++) { 439 /* if we don't have the values, use the default */ 440 if (i >= num_chains || j >= num_sub_bands) { 441 profile->chains[i].subbands[j] = 0; 442 } else { 443 if (table[idx].type != ACPI_TYPE_INTEGER || 444 table[idx].integer.value > U8_MAX) 445 return -EINVAL; 446 447 profile->chains[i].subbands[j] = 448 table[idx].integer.value; 449 450 idx++; 451 } 452 } 453 } 454 455 /* Only if all values were valid can the profile be enabled */ 456 profile->enabled = enabled; 457 458 return 0; 459} 460 461int iwl_acpi_get_wrds_table(struct iwl_fw_runtime *fwrt) 462{ 463 union acpi_object *wifi_pkg, *table, *data; 464 int ret, tbl_rev; 465 u32 flags; 466 u8 num_chains, num_sub_bands; 467 468 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD); 469 if (IS_ERR(data)) 470 return PTR_ERR(data); 471 472 /* start by trying to read revision 2 */ 473 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 474 ACPI_WRDS_WIFI_DATA_SIZE_REV2, 475 &tbl_rev); 476 if (!IS_ERR(wifi_pkg)) { 477 if (tbl_rev != 2) { 478 ret = -EINVAL; 479 goto out_free; 480 } 481 482 num_chains = ACPI_SAR_NUM_CHAINS_REV2; 483 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2; 484 485 goto read_table; 486 } 487 488 /* then try revision 1 */ 489 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 490 ACPI_WRDS_WIFI_DATA_SIZE_REV1, 491 &tbl_rev); 492 if (!IS_ERR(wifi_pkg)) { 493 if (tbl_rev != 1) { 494 ret = -EINVAL; 495 goto out_free; 496 } 497 498 num_chains = ACPI_SAR_NUM_CHAINS_REV1; 499 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1; 500 501 goto read_table; 502 } 503 504 /* then finally revision 0 */ 505 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 506 ACPI_WRDS_WIFI_DATA_SIZE_REV0, 507 &tbl_rev); 508 if (!IS_ERR(wifi_pkg)) { 509 if (tbl_rev != 0) { 510 ret = -EINVAL; 511 goto out_free; 512 } 513 514 num_chains = ACPI_SAR_NUM_CHAINS_REV0; 515 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0; 516 517 goto read_table; 518 } 519 520 ret = PTR_ERR(wifi_pkg); 521 goto out_free; 522 523read_table: 524 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { 525 ret = -EINVAL; 526 goto out_free; 527 } 528 529 IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev); 530 531 flags = wifi_pkg->package.elements[1].integer.value; 532 fwrt->reduced_power_flags = flags >> IWL_REDUCE_POWER_FLAGS_POS; 533 534 /* position of the actual table */ 535 table = &wifi_pkg->package.elements[2]; 536 537 /* The profile from WRDS is officially profile 1, but goes 538 * into sar_profiles[0] (because we don't have a profile 0). 539 */ 540 ret = iwl_acpi_sar_set_profile(table, &fwrt->sar_profiles[0], 541 flags & IWL_SAR_ENABLE_MSK, 542 num_chains, num_sub_bands); 543out_free: 544 kfree(data); 545 return ret; 546} 547 548int iwl_acpi_get_ewrd_table(struct iwl_fw_runtime *fwrt) 549{ 550 union acpi_object *wifi_pkg, *data; 551 bool enabled; 552 int i, n_profiles, tbl_rev, pos; 553 int ret = 0; 554 u8 num_chains, num_sub_bands; 555 556 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD); 557 if (IS_ERR(data)) 558 return PTR_ERR(data); 559 560 /* start by trying to read revision 2 */ 561 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 562 ACPI_EWRD_WIFI_DATA_SIZE_REV2, 563 &tbl_rev); 564 if (!IS_ERR(wifi_pkg)) { 565 if (tbl_rev != 2) { 566 ret = -EINVAL; 567 goto out_free; 568 } 569 570 num_chains = ACPI_SAR_NUM_CHAINS_REV2; 571 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2; 572 573 goto read_table; 574 } 575 576 /* then try revision 1 */ 577 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 578 ACPI_EWRD_WIFI_DATA_SIZE_REV1, 579 &tbl_rev); 580 if (!IS_ERR(wifi_pkg)) { 581 if (tbl_rev != 1) { 582 ret = -EINVAL; 583 goto out_free; 584 } 585 586 num_chains = ACPI_SAR_NUM_CHAINS_REV1; 587 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1; 588 589 goto read_table; 590 } 591 592 /* then finally revision 0 */ 593 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 594 ACPI_EWRD_WIFI_DATA_SIZE_REV0, 595 &tbl_rev); 596 if (!IS_ERR(wifi_pkg)) { 597 if (tbl_rev != 0) { 598 ret = -EINVAL; 599 goto out_free; 600 } 601 602 num_chains = ACPI_SAR_NUM_CHAINS_REV0; 603 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0; 604 605 goto read_table; 606 } 607 608 ret = PTR_ERR(wifi_pkg); 609 goto out_free; 610 611read_table: 612 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 613 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) { 614 ret = -EINVAL; 615 goto out_free; 616 } 617 618 enabled = !!(wifi_pkg->package.elements[1].integer.value); 619 n_profiles = wifi_pkg->package.elements[2].integer.value; 620 621 /* 622 * Check the validity of n_profiles. The EWRD profiles start 623 * from index 1, so the maximum value allowed here is 624 * ACPI_SAR_PROFILES_NUM - 1. 625 */ 626 if (n_profiles >= BIOS_SAR_MAX_PROFILE_NUM) { 627 ret = -EINVAL; 628 goto out_free; 629 } 630 631 /* the tables start at element 3 */ 632 pos = 3; 633 634 for (i = 0; i < n_profiles; i++) { 635 union acpi_object *table = &wifi_pkg->package.elements[pos]; 636 /* The EWRD profiles officially go from 2 to 4, but we 637 * save them in sar_profiles[1-3] (because we don't 638 * have profile 0). So in the array we start from 1. 639 */ 640 ret = iwl_acpi_sar_set_profile(table, 641 &fwrt->sar_profiles[i + 1], 642 enabled, num_chains, 643 num_sub_bands); 644 if (ret < 0) 645 break; 646 647 /* go to the next table */ 648 pos += num_chains * num_sub_bands; 649 } 650 651out_free: 652 kfree(data); 653 return ret; 654} 655 656int iwl_acpi_get_wgds_table(struct iwl_fw_runtime *fwrt) 657{ 658 union acpi_object *wifi_pkg, *data; 659 int i, j, k, ret, tbl_rev; 660 u8 num_bands, num_profiles; 661 static const struct { 662 u8 revisions; 663 u8 bands; 664 u8 profiles; 665 u8 min_profiles; 666 } rev_data[] = { 667 { 668 .revisions = BIT(3), 669 .bands = ACPI_GEO_NUM_BANDS_REV2, 670 .profiles = ACPI_NUM_GEO_PROFILES_REV3, 671 .min_profiles = BIOS_GEO_MIN_PROFILE_NUM, 672 }, 673 { 674 .revisions = BIT(2), 675 .bands = ACPI_GEO_NUM_BANDS_REV2, 676 .profiles = ACPI_NUM_GEO_PROFILES, 677 }, 678 { 679 .revisions = BIT(0) | BIT(1), 680 .bands = ACPI_GEO_NUM_BANDS_REV0, 681 .profiles = ACPI_NUM_GEO_PROFILES, 682 }, 683 }; 684 int idx; 685 /* start from one to skip the domain */ 686 int entry_idx = 1; 687 688 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES_REV3 != IWL_NUM_GEO_PROFILES_V3); 689 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES != IWL_NUM_GEO_PROFILES); 690 691 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD); 692 if (IS_ERR(data)) 693 return PTR_ERR(data); 694 695 /* read the highest revision we understand first */ 696 for (idx = 0; idx < ARRAY_SIZE(rev_data); idx++) { 697 /* min_profiles != 0 requires num_profiles header */ 698 u32 hdr_size = 1 + !!rev_data[idx].min_profiles; 699 u32 profile_size = ACPI_GEO_PER_CHAIN_SIZE * 700 rev_data[idx].bands; 701 u32 max_size = hdr_size + profile_size * rev_data[idx].profiles; 702 u32 min_size; 703 704 if (!rev_data[idx].min_profiles) 705 min_size = max_size; 706 else 707 min_size = hdr_size + 708 profile_size * rev_data[idx].min_profiles; 709 710 wifi_pkg = iwl_acpi_get_wifi_pkg_range(fwrt->dev, data, 711 min_size, max_size, 712 &tbl_rev); 713 if (!IS_ERR(wifi_pkg)) { 714 if (!(BIT(tbl_rev) & rev_data[idx].revisions)) 715 continue; 716 717 num_bands = rev_data[idx].bands; 718 num_profiles = rev_data[idx].profiles; 719 720 if (rev_data[idx].min_profiles) { 721 /* read header that says # of profiles */ 722 union acpi_object *entry; 723 724 entry = &wifi_pkg->package.elements[entry_idx]; 725 entry_idx++; 726 if (entry->type != ACPI_TYPE_INTEGER || 727 entry->integer.value > num_profiles) { 728 ret = -EINVAL; 729 goto out_free; 730 } 731 num_profiles = entry->integer.value; 732 733 /* 734 * this also validates >= min_profiles since we 735 * otherwise wouldn't have gotten the data when 736 * looking up in ACPI 737 */ 738 if (wifi_pkg->package.count != 739 hdr_size + profile_size * num_profiles) { 740 ret = -EINVAL; 741 goto out_free; 742 } 743 } 744 goto read_table; 745 } 746 } 747 748 if (idx < ARRAY_SIZE(rev_data)) 749 ret = PTR_ERR(wifi_pkg); 750 else 751 ret = -ENOENT; 752 goto out_free; 753 754read_table: 755 fwrt->geo_rev = tbl_rev; 756 for (i = 0; i < num_profiles; i++) { 757 for (j = 0; j < BIOS_GEO_MAX_NUM_BANDS; j++) { 758 union acpi_object *entry; 759 760 /* 761 * num_bands is either 2 or 3, if it's only 2 then 762 * fill the third band (6 GHz) with the values from 763 * 5 GHz (second band) 764 */ 765 if (j >= num_bands) { 766 fwrt->geo_profiles[i].bands[j].max = 767 fwrt->geo_profiles[i].bands[1].max; 768 } else { 769 entry = &wifi_pkg->package.elements[entry_idx]; 770 entry_idx++; 771 if (entry->type != ACPI_TYPE_INTEGER || 772 entry->integer.value > U8_MAX) { 773 ret = -EINVAL; 774 goto out_free; 775 } 776 777 fwrt->geo_profiles[i].bands[j].max = 778 entry->integer.value; 779 } 780 781 for (k = 0; k < BIOS_GEO_NUM_CHAINS; k++) { 782 /* same here as above */ 783 if (j >= num_bands) { 784 fwrt->geo_profiles[i].bands[j].chains[k] = 785 fwrt->geo_profiles[i].bands[1].chains[k]; 786 } else { 787 entry = &wifi_pkg->package.elements[entry_idx]; 788 entry_idx++; 789 if (entry->type != ACPI_TYPE_INTEGER || 790 entry->integer.value > U8_MAX) { 791 ret = -EINVAL; 792 goto out_free; 793 } 794 795 fwrt->geo_profiles[i].bands[j].chains[k] = 796 entry->integer.value; 797 } 798 } 799 } 800 } 801 802 fwrt->geo_num_profiles = num_profiles; 803 fwrt->geo_enabled = true; 804 ret = 0; 805out_free: 806 kfree(data); 807 return ret; 808} 809 810int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt) 811{ 812 union acpi_object *wifi_pkg, *data, *flags; 813 int i, j, ret, tbl_rev, num_sub_bands = 0; 814 int idx = 2; 815 816 data = iwl_acpi_get_object(fwrt->dev, ACPI_PPAG_METHOD); 817 if (IS_ERR(data)) 818 return PTR_ERR(data); 819 820 /* try to read ppag table rev 3, 2 or 1 (all have the same data size) */ 821 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 822 ACPI_PPAG_WIFI_DATA_SIZE_V2, &tbl_rev); 823 824 if (!IS_ERR(wifi_pkg)) { 825 if (tbl_rev >= 1 && tbl_rev <= 3) { 826 num_sub_bands = IWL_NUM_SUB_BANDS_V2; 827 IWL_DEBUG_RADIO(fwrt, 828 "Reading PPAG table (tbl_rev=%d)\n", 829 tbl_rev); 830 goto read_table; 831 } else { 832 ret = -EINVAL; 833 goto out_free; 834 } 835 } 836 837 /* try to read ppag table revision 0 */ 838 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 839 ACPI_PPAG_WIFI_DATA_SIZE_V1, &tbl_rev); 840 841 if (!IS_ERR(wifi_pkg)) { 842 if (tbl_rev != 0) { 843 ret = -EINVAL; 844 goto out_free; 845 } 846 num_sub_bands = IWL_NUM_SUB_BANDS_V1; 847 IWL_DEBUG_RADIO(fwrt, "Reading PPAG table v1 (tbl_rev=0)\n"); 848 goto read_table; 849 } 850 851 ret = PTR_ERR(wifi_pkg); 852 goto out_free; 853 854read_table: 855 fwrt->ppag_ver = tbl_rev; 856 flags = &wifi_pkg->package.elements[1]; 857 858 if (flags->type != ACPI_TYPE_INTEGER) { 859 ret = -EINVAL; 860 goto out_free; 861 } 862 863 fwrt->ppag_flags = iwl_bios_get_ppag_flags(flags->integer.value, 864 fwrt->ppag_ver); 865 866 /* 867 * read, verify gain values and save them into the PPAG table. 868 * first sub-band (j=0) corresponds to Low-Band (2.4GHz), and the 869 * following sub-bands to High-Band (5GHz). 870 */ 871 for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) { 872 for (j = 0; j < num_sub_bands; j++) { 873 union acpi_object *ent; 874 875 ent = &wifi_pkg->package.elements[idx++]; 876 if (ent->type != ACPI_TYPE_INTEGER) { 877 ret = -EINVAL; 878 goto out_free; 879 } 880 881 fwrt->ppag_chains[i].subbands[j] = ent->integer.value; 882 } 883 } 884 885 ret = 0; 886 887out_free: 888 kfree(data); 889 return ret; 890} 891 892void iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt, 893 struct iwl_phy_specific_cfg *filters) 894{ 895 struct iwl_phy_specific_cfg tmp = {}; 896 union acpi_object *wifi_pkg, *data; 897 int tbl_rev, i; 898 899 data = iwl_acpi_get_object(fwrt->dev, ACPI_WPFC_METHOD); 900 if (IS_ERR(data)) 901 return; 902 903 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 904 ACPI_WPFC_WIFI_DATA_SIZE, 905 &tbl_rev); 906 if (IS_ERR(wifi_pkg)) 907 goto out_free; 908 909 if (tbl_rev != 0) 910 goto out_free; 911 912 BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) != 913 ACPI_WPFC_WIFI_DATA_SIZE - 1); 914 915 for (i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) { 916 if (wifi_pkg->package.elements[i + 1].type != ACPI_TYPE_INTEGER) 917 goto out_free; 918 tmp.filter_cfg_chains[i] = 919 cpu_to_le32(wifi_pkg->package.elements[i + 1].integer.value); 920 } 921 922 IWL_DEBUG_RADIO(fwrt, "Loaded WPFC filter config from ACPI\n"); 923 *filters = tmp; 924out_free: 925 kfree(data); 926} 927IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters); 928 929void iwl_acpi_get_guid_lock_status(struct iwl_fw_runtime *fwrt) 930{ 931 union acpi_object *wifi_pkg, *data; 932 int tbl_rev; 933 934 data = iwl_acpi_get_object(fwrt->dev, ACPI_GLAI_METHOD); 935 if (IS_ERR(data)) 936 return; 937 938 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 939 ACPI_GLAI_WIFI_DATA_SIZE, 940 &tbl_rev); 941 if (IS_ERR(wifi_pkg)) 942 goto out_free; 943 944 if (tbl_rev != 0) { 945 IWL_DEBUG_RADIO(fwrt, "Invalid GLAI revision: %d\n", tbl_rev); 946 goto out_free; 947 } 948 949 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 950 wifi_pkg->package.elements[1].integer.value > ACPI_GLAI_MAX_STATUS) 951 goto out_free; 952 953 fwrt->uefi_tables_lock_status = 954 wifi_pkg->package.elements[1].integer.value; 955 956 IWL_DEBUG_RADIO(fwrt, 957 "Loaded UEFI WIFI GUID lock status: %d from ACPI\n", 958 fwrt->uefi_tables_lock_status); 959out_free: 960 kfree(data); 961} 962IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status); 963