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 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; 371 out_free: 372 kfree(data); 373 return ret; 374 } 375 376 int 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; 394 out_free: 395 kfree(data); 396 out: 397 return ret; 398 } 399 400 int 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; 426 427 out_free: 428 kfree(data); 429 return ret; 430 } 431 432 static int 433 iwl_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 } 456 457 int 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; 518 519 read_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 goes 534 * 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; 540 541 out_free: 542 kfree(data); 543 return ret; 544 } 545 546 int 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; 605 606 read_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 start 618 * from index 1, so the maximum value allowed here is 619 * 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 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_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 } 672 673 set_enabled: 674 for (i = 0; i < n_profiles; i++) 675 fwrt->sar_profiles[i + 1].enabled = enabled; 676 677 out_free: 678 kfree(data); 679 return ret; 680 } 681 682 int 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 else 733 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 count 762 * same as max # of profiles 763 */ 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 else 780 ret = -ENOENT; 781 goto out_free; 782 783 read_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 then 791 * fill the third band (6 GHz) with the values from 792 * 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; 834 out_free: 835 kfree(data); 836 return ret; 837 } 838 839 int 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; 882 883 read_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 the 898 * 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; 915 916 out_free: 917 kfree(data); 918 return ret; 919 } 920 921 void 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; 953 out_free: 954 kfree(data); 955 } 956 IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters); 957 958 void 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); 988 out_free: 989 kfree(data); 990 } 991 IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status); 992 993 int 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; 1022 out_free: 1023 kfree(data); 1024 return ret; 1025 } 1026