1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2017 Intel Deutschland GmbH 4 * Copyright (C) 2019-2024 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 16 static 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 33 static 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 55 static 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 specific 79 * method (DSM) interface. The returned acpi object must be freed by calling 80 * function. 81 */ 82 static 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 arguments 101 * 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 */ 106 static 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); 150 out: 151 ACPI_FREE(obj); 152 return ret; 153 } 154 155 /* 156 * This function receives a DSM function number, calculates its expected size 157 * 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 */ 160 int 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 } 191 192 static union acpi_object * 193 iwl_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 that 204 * describes the domain, and one more entry, otherwise there's 205 * 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 one 212 * for the data itself. Also check that the revision is valid 213 * (i.e. it is an integer (each caller has to check by itself 214 * 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); 244 245 found: 246 return wifi_pkg; 247 } 248 249 static union acpi_object * 250 iwl_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 } 257 258 int 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; 330 out_free: 331 kfree(data); 332 return ret; 333 } 334 335 int 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; 360 361 mcc[0] = (mcc_val >> 8) & 0xff; 362 mcc[1] = mcc_val & 0xff; 363 mcc[2] = '\0'; 364 365 ret = 0; 366 out_free: 367 kfree(data); 368 return ret; 369 } 370 371 int iwl_acpi_get_pwr_limit(struct iwl_fw_runtime *fwrt, u64 *dflt_pwr_limit) 372 { 373 union acpi_object *data, *wifi_pkg; 374 int tbl_rev, ret = -EINVAL; 375 376 *dflt_pwr_limit = 0; 377 data = iwl_acpi_get_object(fwrt->dev, ACPI_SPLC_METHOD); 378 if (IS_ERR(data)) 379 goto out; 380 381 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 382 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev); 383 if (IS_ERR(wifi_pkg) || tbl_rev != 0 || 384 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) 385 goto out_free; 386 387 *dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value; 388 ret = 0; 389 out_free: 390 kfree(data); 391 out: 392 return ret; 393 } 394 395 int iwl_acpi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) 396 { 397 union acpi_object *wifi_pkg, *data; 398 int ret, tbl_rev; 399 400 data = iwl_acpi_get_object(fwrt->dev, ACPI_ECKV_METHOD); 401 if (IS_ERR(data)) 402 return PTR_ERR(data); 403 404 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 405 ACPI_ECKV_WIFI_DATA_SIZE, 406 &tbl_rev); 407 if (IS_ERR(wifi_pkg)) { 408 ret = PTR_ERR(wifi_pkg); 409 goto out_free; 410 } 411 412 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 413 tbl_rev != 0) { 414 ret = -EINVAL; 415 goto out_free; 416 } 417 418 *extl_clk = wifi_pkg->package.elements[1].integer.value; 419 420 ret = 0; 421 422 out_free: 423 kfree(data); 424 return ret; 425 } 426 427 static int iwl_acpi_sar_set_profile(union acpi_object *table, 428 struct iwl_sar_profile *profile, 429 bool enabled, u8 num_chains, 430 u8 num_sub_bands) 431 { 432 int i, j, idx = 0; 433 434 /* 435 * The table from ACPI is flat, but we store it in a 436 * structured array. 437 */ 438 for (i = 0; i < BIOS_SAR_MAX_CHAINS_PER_PROFILE; i++) { 439 for (j = 0; j < BIOS_SAR_MAX_SUB_BANDS_NUM; j++) { 440 /* if we don't have the values, use the default */ 441 if (i >= num_chains || j >= num_sub_bands) { 442 profile->chains[i].subbands[j] = 0; 443 } else { 444 if (table[idx].type != ACPI_TYPE_INTEGER || 445 table[idx].integer.value > U8_MAX) 446 return -EINVAL; 447 448 profile->chains[i].subbands[j] = 449 table[idx].integer.value; 450 451 idx++; 452 } 453 } 454 } 455 456 /* Only if all values were valid can the profile be enabled */ 457 profile->enabled = enabled; 458 459 return 0; 460 } 461 462 int iwl_acpi_get_wrds_table(struct iwl_fw_runtime *fwrt) 463 { 464 union acpi_object *wifi_pkg, *table, *data; 465 int ret, tbl_rev; 466 u32 flags; 467 u8 num_chains, num_sub_bands; 468 469 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD); 470 if (IS_ERR(data)) 471 return PTR_ERR(data); 472 473 /* start by trying to read revision 2 */ 474 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 475 ACPI_WRDS_WIFI_DATA_SIZE_REV2, 476 &tbl_rev); 477 if (!IS_ERR(wifi_pkg)) { 478 if (tbl_rev != 2) { 479 ret = -EINVAL; 480 goto out_free; 481 } 482 483 num_chains = ACPI_SAR_NUM_CHAINS_REV2; 484 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2; 485 486 goto read_table; 487 } 488 489 /* then try revision 1 */ 490 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 491 ACPI_WRDS_WIFI_DATA_SIZE_REV1, 492 &tbl_rev); 493 if (!IS_ERR(wifi_pkg)) { 494 if (tbl_rev != 1) { 495 ret = -EINVAL; 496 goto out_free; 497 } 498 499 num_chains = ACPI_SAR_NUM_CHAINS_REV1; 500 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1; 501 502 goto read_table; 503 } 504 505 /* then finally revision 0 */ 506 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 507 ACPI_WRDS_WIFI_DATA_SIZE_REV0, 508 &tbl_rev); 509 if (!IS_ERR(wifi_pkg)) { 510 if (tbl_rev != 0) { 511 ret = -EINVAL; 512 goto out_free; 513 } 514 515 num_chains = ACPI_SAR_NUM_CHAINS_REV0; 516 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0; 517 518 goto read_table; 519 } 520 521 ret = PTR_ERR(wifi_pkg); 522 goto out_free; 523 524 read_table: 525 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { 526 ret = -EINVAL; 527 goto out_free; 528 } 529 530 IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev); 531 532 flags = wifi_pkg->package.elements[1].integer.value; 533 fwrt->reduced_power_flags = flags >> IWL_REDUCE_POWER_FLAGS_POS; 534 535 /* position of the actual table */ 536 table = &wifi_pkg->package.elements[2]; 537 538 /* The profile from WRDS is officially profile 1, but goes 539 * into sar_profiles[0] (because we don't have a profile 0). 540 */ 541 ret = iwl_acpi_sar_set_profile(table, &fwrt->sar_profiles[0], 542 flags & IWL_SAR_ENABLE_MSK, 543 num_chains, num_sub_bands); 544 out_free: 545 kfree(data); 546 return ret; 547 } 548 549 int iwl_acpi_get_ewrd_table(struct iwl_fw_runtime *fwrt) 550 { 551 union acpi_object *wifi_pkg, *data; 552 bool enabled; 553 int i, n_profiles, tbl_rev, pos; 554 int ret = 0; 555 u8 num_chains, num_sub_bands; 556 557 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD); 558 if (IS_ERR(data)) 559 return PTR_ERR(data); 560 561 /* start by trying to read revision 2 */ 562 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 563 ACPI_EWRD_WIFI_DATA_SIZE_REV2, 564 &tbl_rev); 565 if (!IS_ERR(wifi_pkg)) { 566 if (tbl_rev != 2) { 567 ret = -EINVAL; 568 goto out_free; 569 } 570 571 num_chains = ACPI_SAR_NUM_CHAINS_REV2; 572 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2; 573 574 goto read_table; 575 } 576 577 /* then try revision 1 */ 578 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 579 ACPI_EWRD_WIFI_DATA_SIZE_REV1, 580 &tbl_rev); 581 if (!IS_ERR(wifi_pkg)) { 582 if (tbl_rev != 1) { 583 ret = -EINVAL; 584 goto out_free; 585 } 586 587 num_chains = ACPI_SAR_NUM_CHAINS_REV1; 588 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1; 589 590 goto read_table; 591 } 592 593 /* then finally revision 0 */ 594 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 595 ACPI_EWRD_WIFI_DATA_SIZE_REV0, 596 &tbl_rev); 597 if (!IS_ERR(wifi_pkg)) { 598 if (tbl_rev != 0) { 599 ret = -EINVAL; 600 goto out_free; 601 } 602 603 num_chains = ACPI_SAR_NUM_CHAINS_REV0; 604 num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0; 605 606 goto read_table; 607 } 608 609 ret = PTR_ERR(wifi_pkg); 610 goto out_free; 611 612 read_table: 613 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 614 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) { 615 ret = -EINVAL; 616 goto out_free; 617 } 618 619 enabled = !!(wifi_pkg->package.elements[1].integer.value); 620 n_profiles = wifi_pkg->package.elements[2].integer.value; 621 622 /* 623 * Check the validity of n_profiles. The EWRD profiles start 624 * from index 1, so the maximum value allowed here is 625 * ACPI_SAR_PROFILES_NUM - 1. 626 */ 627 if (n_profiles >= BIOS_SAR_MAX_PROFILE_NUM) { 628 ret = -EINVAL; 629 goto out_free; 630 } 631 632 /* the tables start at element 3 */ 633 pos = 3; 634 635 for (i = 0; i < n_profiles; i++) { 636 union acpi_object *table = &wifi_pkg->package.elements[pos]; 637 /* The EWRD profiles officially go from 2 to 4, but we 638 * save them in sar_profiles[1-3] (because we don't 639 * have profile 0). So in the array we start from 1. 640 */ 641 ret = iwl_acpi_sar_set_profile(table, 642 &fwrt->sar_profiles[i + 1], 643 enabled, num_chains, 644 num_sub_bands); 645 if (ret < 0) 646 break; 647 648 /* go to the next table */ 649 pos += num_chains * num_sub_bands; 650 } 651 652 out_free: 653 kfree(data); 654 return ret; 655 } 656 657 int iwl_acpi_get_wgds_table(struct iwl_fw_runtime *fwrt) 658 { 659 union acpi_object *wifi_pkg, *data; 660 int i, j, k, ret, tbl_rev; 661 u8 num_bands, num_profiles; 662 static const struct { 663 u8 revisions; 664 u8 bands; 665 u8 profiles; 666 u8 min_profiles; 667 } rev_data[] = { 668 { 669 .revisions = BIT(3), 670 .bands = ACPI_GEO_NUM_BANDS_REV2, 671 .profiles = ACPI_NUM_GEO_PROFILES_REV3, 672 .min_profiles = BIOS_GEO_MIN_PROFILE_NUM, 673 }, 674 { 675 .revisions = BIT(2), 676 .bands = ACPI_GEO_NUM_BANDS_REV2, 677 .profiles = ACPI_NUM_GEO_PROFILES, 678 }, 679 { 680 .revisions = BIT(0) | BIT(1), 681 .bands = ACPI_GEO_NUM_BANDS_REV0, 682 .profiles = ACPI_NUM_GEO_PROFILES, 683 }, 684 }; 685 int idx; 686 /* start from one to skip the domain */ 687 int entry_idx = 1; 688 689 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES_REV3 != IWL_NUM_GEO_PROFILES_V3); 690 BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES != IWL_NUM_GEO_PROFILES); 691 692 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD); 693 if (IS_ERR(data)) 694 return PTR_ERR(data); 695 696 /* read the highest revision we understand first */ 697 for (idx = 0; idx < ARRAY_SIZE(rev_data); idx++) { 698 /* min_profiles != 0 requires num_profiles header */ 699 u32 hdr_size = 1 + !!rev_data[idx].min_profiles; 700 u32 profile_size = ACPI_GEO_PER_CHAIN_SIZE * 701 rev_data[idx].bands; 702 u32 max_size = hdr_size + profile_size * rev_data[idx].profiles; 703 u32 min_size; 704 705 if (!rev_data[idx].min_profiles) 706 min_size = max_size; 707 else 708 min_size = hdr_size + 709 profile_size * rev_data[idx].min_profiles; 710 711 wifi_pkg = iwl_acpi_get_wifi_pkg_range(fwrt->dev, data, 712 min_size, max_size, 713 &tbl_rev); 714 if (!IS_ERR(wifi_pkg)) { 715 if (!(BIT(tbl_rev) & rev_data[idx].revisions)) 716 continue; 717 718 num_bands = rev_data[idx].bands; 719 num_profiles = rev_data[idx].profiles; 720 721 if (rev_data[idx].min_profiles) { 722 /* read header that says # of profiles */ 723 union acpi_object *entry; 724 725 entry = &wifi_pkg->package.elements[entry_idx]; 726 entry_idx++; 727 if (entry->type != ACPI_TYPE_INTEGER || 728 entry->integer.value > num_profiles || 729 entry->integer.value < 730 rev_data[idx].min_profiles) { 731 ret = -EINVAL; 732 goto out_free; 733 } 734 735 /* 736 * Check to see if we received package count 737 * same as max # of profiles 738 */ 739 if (wifi_pkg->package.count != 740 hdr_size + profile_size * num_profiles) { 741 ret = -EINVAL; 742 goto out_free; 743 } 744 745 /* Number of valid profiles */ 746 num_profiles = entry->integer.value; 747 } 748 goto read_table; 749 } 750 } 751 752 if (idx < ARRAY_SIZE(rev_data)) 753 ret = PTR_ERR(wifi_pkg); 754 else 755 ret = -ENOENT; 756 goto out_free; 757 758 read_table: 759 fwrt->geo_rev = tbl_rev; 760 for (i = 0; i < num_profiles; i++) { 761 for (j = 0; j < BIOS_GEO_MAX_NUM_BANDS; j++) { 762 union acpi_object *entry; 763 764 /* 765 * num_bands is either 2 or 3, if it's only 2 then 766 * fill the third band (6 GHz) with the values from 767 * 5 GHz (second band) 768 */ 769 if (j >= num_bands) { 770 fwrt->geo_profiles[i].bands[j].max = 771 fwrt->geo_profiles[i].bands[1].max; 772 } else { 773 entry = &wifi_pkg->package.elements[entry_idx]; 774 entry_idx++; 775 if (entry->type != ACPI_TYPE_INTEGER || 776 entry->integer.value > U8_MAX) { 777 ret = -EINVAL; 778 goto out_free; 779 } 780 781 fwrt->geo_profiles[i].bands[j].max = 782 entry->integer.value; 783 } 784 785 for (k = 0; k < BIOS_GEO_NUM_CHAINS; k++) { 786 /* same here as above */ 787 if (j >= num_bands) { 788 fwrt->geo_profiles[i].bands[j].chains[k] = 789 fwrt->geo_profiles[i].bands[1].chains[k]; 790 } else { 791 entry = &wifi_pkg->package.elements[entry_idx]; 792 entry_idx++; 793 if (entry->type != ACPI_TYPE_INTEGER || 794 entry->integer.value > U8_MAX) { 795 ret = -EINVAL; 796 goto out_free; 797 } 798 799 fwrt->geo_profiles[i].bands[j].chains[k] = 800 entry->integer.value; 801 } 802 } 803 } 804 } 805 806 fwrt->geo_num_profiles = num_profiles; 807 fwrt->geo_enabled = true; 808 ret = 0; 809 out_free: 810 kfree(data); 811 return ret; 812 } 813 814 int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt) 815 { 816 union acpi_object *wifi_pkg, *data, *flags; 817 int i, j, ret, tbl_rev, num_sub_bands = 0; 818 int idx = 2; 819 820 data = iwl_acpi_get_object(fwrt->dev, ACPI_PPAG_METHOD); 821 if (IS_ERR(data)) 822 return PTR_ERR(data); 823 824 /* try to read ppag table rev 3, 2 or 1 (all have the same data size) */ 825 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 826 ACPI_PPAG_WIFI_DATA_SIZE_V2, &tbl_rev); 827 828 if (!IS_ERR(wifi_pkg)) { 829 if (tbl_rev >= 1 && tbl_rev <= 3) { 830 num_sub_bands = IWL_NUM_SUB_BANDS_V2; 831 IWL_DEBUG_RADIO(fwrt, 832 "Reading PPAG table (tbl_rev=%d)\n", 833 tbl_rev); 834 goto read_table; 835 } else { 836 ret = -EINVAL; 837 goto out_free; 838 } 839 } 840 841 /* try to read ppag table revision 0 */ 842 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 843 ACPI_PPAG_WIFI_DATA_SIZE_V1, &tbl_rev); 844 845 if (!IS_ERR(wifi_pkg)) { 846 if (tbl_rev != 0) { 847 ret = -EINVAL; 848 goto out_free; 849 } 850 num_sub_bands = IWL_NUM_SUB_BANDS_V1; 851 IWL_DEBUG_RADIO(fwrt, "Reading PPAG table v1 (tbl_rev=0)\n"); 852 goto read_table; 853 } 854 855 ret = PTR_ERR(wifi_pkg); 856 goto out_free; 857 858 read_table: 859 fwrt->ppag_ver = tbl_rev; 860 flags = &wifi_pkg->package.elements[1]; 861 862 if (flags->type != ACPI_TYPE_INTEGER) { 863 ret = -EINVAL; 864 goto out_free; 865 } 866 867 fwrt->ppag_flags = iwl_bios_get_ppag_flags(flags->integer.value, 868 fwrt->ppag_ver); 869 870 /* 871 * read, verify gain values and save them into the PPAG table. 872 * first sub-band (j=0) corresponds to Low-Band (2.4GHz), and the 873 * following sub-bands to High-Band (5GHz). 874 */ 875 for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) { 876 for (j = 0; j < num_sub_bands; j++) { 877 union acpi_object *ent; 878 879 ent = &wifi_pkg->package.elements[idx++]; 880 if (ent->type != ACPI_TYPE_INTEGER) { 881 ret = -EINVAL; 882 goto out_free; 883 } 884 885 fwrt->ppag_chains[i].subbands[j] = ent->integer.value; 886 } 887 } 888 889 ret = 0; 890 891 out_free: 892 kfree(data); 893 return ret; 894 } 895 896 void iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt, 897 struct iwl_phy_specific_cfg *filters) 898 { 899 struct iwl_phy_specific_cfg tmp = {}; 900 union acpi_object *wifi_pkg, *data; 901 int tbl_rev, i; 902 903 data = iwl_acpi_get_object(fwrt->dev, ACPI_WPFC_METHOD); 904 if (IS_ERR(data)) 905 return; 906 907 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 908 ACPI_WPFC_WIFI_DATA_SIZE, 909 &tbl_rev); 910 if (IS_ERR(wifi_pkg)) 911 goto out_free; 912 913 if (tbl_rev != 0) 914 goto out_free; 915 916 BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) != 917 ACPI_WPFC_WIFI_DATA_SIZE - 1); 918 919 for (i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) { 920 if (wifi_pkg->package.elements[i + 1].type != ACPI_TYPE_INTEGER) 921 goto out_free; 922 tmp.filter_cfg_chains[i] = 923 cpu_to_le32(wifi_pkg->package.elements[i + 1].integer.value); 924 } 925 926 IWL_DEBUG_RADIO(fwrt, "Loaded WPFC filter config from ACPI\n"); 927 *filters = tmp; 928 out_free: 929 kfree(data); 930 } 931 IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters); 932 933 void iwl_acpi_get_guid_lock_status(struct iwl_fw_runtime *fwrt) 934 { 935 union acpi_object *wifi_pkg, *data; 936 int tbl_rev; 937 938 data = iwl_acpi_get_object(fwrt->dev, ACPI_GLAI_METHOD); 939 if (IS_ERR(data)) 940 return; 941 942 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 943 ACPI_GLAI_WIFI_DATA_SIZE, 944 &tbl_rev); 945 if (IS_ERR(wifi_pkg)) 946 goto out_free; 947 948 if (tbl_rev != 0) { 949 IWL_DEBUG_RADIO(fwrt, "Invalid GLAI revision: %d\n", tbl_rev); 950 goto out_free; 951 } 952 953 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 954 wifi_pkg->package.elements[1].integer.value > ACPI_GLAI_MAX_STATUS) 955 goto out_free; 956 957 fwrt->uefi_tables_lock_status = 958 wifi_pkg->package.elements[1].integer.value; 959 960 IWL_DEBUG_RADIO(fwrt, 961 "Loaded UEFI WIFI GUID lock status: %d from ACPI\n", 962 fwrt->uefi_tables_lock_status); 963 out_free: 964 kfree(data); 965 } 966 IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status); 967 968 int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value) 969 { 970 union acpi_object *wifi_pkg, *data; 971 int ret = -ENOENT; 972 int tbl_rev; 973 974 data = iwl_acpi_get_object(fwrt->dev, ACPI_WBEM_METHOD); 975 if (IS_ERR(data)) 976 return ret; 977 978 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 979 ACPI_WBEM_WIFI_DATA_SIZE, 980 &tbl_rev); 981 if (IS_ERR(wifi_pkg)) 982 goto out_free; 983 984 if (tbl_rev != IWL_ACPI_WBEM_REVISION) { 985 IWL_DEBUG_RADIO(fwrt, "Unsupported ACPI WBEM revision:%d\n", 986 tbl_rev); 987 goto out_free; 988 } 989 990 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) 991 goto out_free; 992 993 *value = wifi_pkg->package.elements[1].integer.value & 994 IWL_ACPI_WBEM_REV0_MASK; 995 IWL_DEBUG_RADIO(fwrt, "Loaded WBEM config from ACPI\n"); 996 ret = 0; 997 out_free: 998 kfree(data); 999 return ret; 1000 } 1001