1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2017 Intel Deutschland GmbH 9 * Copyright (C) 2019 - 2020 Intel Corporation 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * The full GNU General Public License is included in this distribution 21 * in the file called COPYING. 22 * 23 * Contact Information: 24 * Intel Linux Wireless <linuxwifi@intel.com> 25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 * 27 * BSD LICENSE 28 * 29 * Copyright(c) 2017 Intel Deutschland GmbH 30 * Copyright (C) 2019 - 2020 Intel Corporation 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 37 * * Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * * Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in 41 * the documentation and/or other materials provided with the 42 * distribution. 43 * * Neither the name Intel Corporation nor the names of its 44 * contributors may be used to endorse or promote products derived 45 * from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 50 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 51 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 53 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 58 * 59 *****************************************************************************/ 60 61#include <linux/uuid.h> 62#include "iwl-drv.h" 63#include "iwl-debug.h" 64#include "acpi.h" 65#include "fw/runtime.h" 66 67static const guid_t intel_wifi_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6, 68 0xA5, 0xB3, 0x1F, 0x73, 69 0x8E, 0x28, 0x5A, 0xDE); 70 71static int iwl_acpi_get_handle(struct device *dev, acpi_string method, 72 acpi_handle *ret_handle) 73{ 74 acpi_handle root_handle; 75 acpi_status status; 76 77 root_handle = ACPI_HANDLE(dev); 78 if (!root_handle) { 79 IWL_DEBUG_DEV_RADIO(dev, 80 "ACPI: Could not retrieve root port handle\n"); 81 return -ENOENT; 82 } 83 84 status = acpi_get_handle(root_handle, method, ret_handle); 85 if (ACPI_FAILURE(status)) { 86 IWL_DEBUG_DEV_RADIO(dev, 87 "ACPI: %s method not found\n", method); 88 return -ENOENT; 89 } 90 return 0; 91} 92 93void *iwl_acpi_get_object(struct device *dev, acpi_string method) 94{ 95 struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; 96 acpi_handle handle; 97 acpi_status status; 98 int ret; 99 100 ret = iwl_acpi_get_handle(dev, method, &handle); 101 if (ret) 102 return ERR_PTR(-ENOENT); 103 104 /* Call the method with no arguments */ 105 status = acpi_evaluate_object(handle, NULL, NULL, &buf); 106 if (ACPI_FAILURE(status)) { 107 IWL_DEBUG_DEV_RADIO(dev, 108 "ACPI: %s method invocation failed (status: 0x%x)\n", 109 method, status); 110 return ERR_PTR(-ENOENT); 111 } 112 return buf.pointer; 113} 114IWL_EXPORT_SYMBOL(iwl_acpi_get_object); 115 116/** 117* Generic function for evaluating a method defined in the device specific 118* method (DSM) interface. The returned acpi object must be freed by calling 119* function. 120*/ 121static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func, 122 union acpi_object *args) 123{ 124 union acpi_object *obj; 125 126 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_wifi_guid, rev, func, 127 args); 128 if (!obj) { 129 IWL_DEBUG_DEV_RADIO(dev, 130 "ACPI: DSM method invocation failed (rev: %d, func:%d)\n", 131 rev, func); 132 return ERR_PTR(-ENOENT); 133 } 134 return obj; 135} 136 137/** 138 * Evaluate a DSM with no arguments and a single u8 return value (inside a 139 * buffer object), verify and return that value. 140 */ 141int iwl_acpi_get_dsm_u8(struct device *dev, int rev, int func) 142{ 143 union acpi_object *obj; 144 int ret; 145 146 obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL); 147 if (IS_ERR(obj)) 148 return -ENOENT; 149 150 if (obj->type != ACPI_TYPE_BUFFER) { 151 IWL_DEBUG_DEV_RADIO(dev, 152 "ACPI: DSM method did not return a valid object, type=%d\n", 153 obj->type); 154 ret = -EINVAL; 155 goto out; 156 } 157 158 if (obj->buffer.length != sizeof(u8)) { 159 IWL_DEBUG_DEV_RADIO(dev, 160 "ACPI: DSM method returned invalid buffer, length=%d\n", 161 obj->buffer.length); 162 ret = -EINVAL; 163 goto out; 164 } 165 166 ret = obj->buffer.pointer[0]; 167 IWL_DEBUG_DEV_RADIO(dev, 168 "ACPI: DSM method evaluated: func=%d, ret=%d\n", 169 func, ret); 170out: 171 ACPI_FREE(obj); 172 return ret; 173} 174IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u8); 175 176union acpi_object *iwl_acpi_get_wifi_pkg(struct device *dev, 177 union acpi_object *data, 178 int data_size, int *tbl_rev) 179{ 180 int i; 181 union acpi_object *wifi_pkg; 182 183 /* 184 * We need at least one entry in the wifi package that 185 * describes the domain, and one more entry, otherwise there's 186 * no point in reading it. 187 */ 188 if (WARN_ON_ONCE(data_size < 2)) 189 return ERR_PTR(-EINVAL); 190 191 /* 192 * We need at least two packages, one for the revision and one 193 * for the data itself. Also check that the revision is valid 194 * (i.e. it is an integer smaller than 2, as we currently support only 195 * 2 revisions). 196 */ 197 if (data->type != ACPI_TYPE_PACKAGE || 198 data->package.count < 2 || 199 data->package.elements[0].type != ACPI_TYPE_INTEGER || 200 data->package.elements[0].integer.value > 1) { 201 IWL_DEBUG_DEV_RADIO(dev, "Unsupported packages structure\n"); 202 return ERR_PTR(-EINVAL); 203 } 204 205 *tbl_rev = data->package.elements[0].integer.value; 206 207 /* loop through all the packages to find the one for WiFi */ 208 for (i = 1; i < data->package.count; i++) { 209 union acpi_object *domain; 210 211 wifi_pkg = &data->package.elements[i]; 212 213 /* skip entries that are not a package with the right size */ 214 if (wifi_pkg->type != ACPI_TYPE_PACKAGE || 215 wifi_pkg->package.count != data_size) 216 continue; 217 218 domain = &wifi_pkg->package.elements[0]; 219 if (domain->type == ACPI_TYPE_INTEGER && 220 domain->integer.value == ACPI_WIFI_DOMAIN) 221 goto found; 222 } 223 224 return ERR_PTR(-ENOENT); 225 226found: 227 return wifi_pkg; 228} 229IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg); 230 231int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt, 232 __le32 *block_list_array, 233 int *block_list_size) 234{ 235 union acpi_object *wifi_pkg, *data; 236 int ret, tbl_rev, i; 237 bool enabled; 238 239 data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD); 240 if (IS_ERR(data)) 241 return PTR_ERR(data); 242 243 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 244 ACPI_WTAS_WIFI_DATA_SIZE, 245 &tbl_rev); 246 if (IS_ERR(wifi_pkg)) { 247 ret = PTR_ERR(wifi_pkg); 248 goto out_free; 249 } 250 251 if (wifi_pkg->package.elements[0].type != ACPI_TYPE_INTEGER || 252 tbl_rev != 0) { 253 ret = -EINVAL; 254 goto out_free; 255 } 256 257 enabled = !!wifi_pkg->package.elements[1].integer.value; 258 259 if (!enabled) { 260 *block_list_size = -1; 261 IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n"); 262 ret = 0; 263 goto out_free; 264 } 265 266 if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER || 267 wifi_pkg->package.elements[2].integer.value > 268 APCI_WTAS_BLACK_LIST_MAX) { 269 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n", 270 wifi_pkg->package.elements[1].integer.value); 271 ret = -EINVAL; 272 goto out_free; 273 } 274 *block_list_size = wifi_pkg->package.elements[2].integer.value; 275 276 IWL_DEBUG_RADIO(fwrt, "TAS array size %d\n", *block_list_size); 277 if (*block_list_size > APCI_WTAS_BLACK_LIST_MAX) { 278 IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n", 279 *block_list_size); 280 ret = -EINVAL; 281 goto out_free; 282 } 283 284 for (i = 0; i < *block_list_size; i++) { 285 u32 country; 286 287 if (wifi_pkg->package.elements[3 + i].type != 288 ACPI_TYPE_INTEGER) { 289 IWL_DEBUG_RADIO(fwrt, 290 "TAS invalid array elem %d\n", 3 + i); 291 ret = -EINVAL; 292 goto out_free; 293 } 294 295 country = wifi_pkg->package.elements[3 + i].integer.value; 296 block_list_array[i] = cpu_to_le32(country); 297 IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country); 298 } 299 300 ret = 0; 301out_free: 302 kfree(data); 303 return ret; 304} 305IWL_EXPORT_SYMBOL(iwl_acpi_get_tas); 306 307int iwl_acpi_get_mcc(struct device *dev, char *mcc) 308{ 309 union acpi_object *wifi_pkg, *data; 310 u32 mcc_val; 311 int ret, tbl_rev; 312 313 data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD); 314 if (IS_ERR(data)) 315 return PTR_ERR(data); 316 317 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_WRDD_WIFI_DATA_SIZE, 318 &tbl_rev); 319 if (IS_ERR(wifi_pkg)) { 320 ret = PTR_ERR(wifi_pkg); 321 goto out_free; 322 } 323 324 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 325 tbl_rev != 0) { 326 ret = -EINVAL; 327 goto out_free; 328 } 329 330 mcc_val = wifi_pkg->package.elements[1].integer.value; 331 332 mcc[0] = (mcc_val >> 8) & 0xff; 333 mcc[1] = mcc_val & 0xff; 334 mcc[2] = '\0'; 335 336 ret = 0; 337out_free: 338 kfree(data); 339 return ret; 340} 341IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc); 342 343u64 iwl_acpi_get_pwr_limit(struct device *dev) 344{ 345 union acpi_object *data, *wifi_pkg; 346 u64 dflt_pwr_limit; 347 int tbl_rev; 348 349 data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD); 350 if (IS_ERR(data)) { 351 dflt_pwr_limit = 0; 352 goto out; 353 } 354 355 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, 356 ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev); 357 if (IS_ERR(wifi_pkg) || tbl_rev != 0 || 358 wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) { 359 dflt_pwr_limit = 0; 360 goto out_free; 361 } 362 363 dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value; 364out_free: 365 kfree(data); 366out: 367 return dflt_pwr_limit; 368} 369IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit); 370 371int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk) 372{ 373 union acpi_object *wifi_pkg, *data; 374 int ret, tbl_rev; 375 376 data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD); 377 if (IS_ERR(data)) 378 return PTR_ERR(data); 379 380 wifi_pkg = iwl_acpi_get_wifi_pkg(dev, data, ACPI_ECKV_WIFI_DATA_SIZE, 381 &tbl_rev); 382 if (IS_ERR(wifi_pkg)) { 383 ret = PTR_ERR(wifi_pkg); 384 goto out_free; 385 } 386 387 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 388 tbl_rev != 0) { 389 ret = -EINVAL; 390 goto out_free; 391 } 392 393 *extl_clk = wifi_pkg->package.elements[1].integer.value; 394 395 ret = 0; 396 397out_free: 398 kfree(data); 399 return ret; 400} 401IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv); 402 403static int iwl_sar_set_profile(union acpi_object *table, 404 struct iwl_sar_profile *profile, 405 bool enabled) 406{ 407 int i; 408 409 profile->enabled = enabled; 410 411 for (i = 0; i < ACPI_SAR_TABLE_SIZE; i++) { 412 if (table[i].type != ACPI_TYPE_INTEGER || 413 table[i].integer.value > U8_MAX) 414 return -EINVAL; 415 416 profile->table[i] = table[i].integer.value; 417 } 418 419 return 0; 420} 421 422static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt, 423 __le16 *per_chain, u32 n_subbands, 424 int prof_a, int prof_b) 425{ 426 int profs[ACPI_SAR_NUM_CHAIN_LIMITS] = { prof_a, prof_b }; 427 int i, j, idx; 428 429 for (i = 0; i < ACPI_SAR_NUM_CHAIN_LIMITS; i++) { 430 struct iwl_sar_profile *prof; 431 432 /* don't allow SAR to be disabled (profile 0 means disable) */ 433 if (profs[i] == 0) 434 return -EPERM; 435 436 /* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */ 437 if (profs[i] > ACPI_SAR_PROFILE_NUM) 438 return -EINVAL; 439 440 /* profiles go from 1 to 4, so decrement to access the array */ 441 prof = &fwrt->sar_profiles[profs[i] - 1]; 442 443 /* if the profile is disabled, do nothing */ 444 if (!prof->enabled) { 445 IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n", 446 profs[i]); 447 /* 448 * if one of the profiles is disabled, we 449 * ignore all of them and return 1 to 450 * differentiate disabled from other failures. 451 */ 452 return 1; 453 } 454 455 IWL_DEBUG_INFO(fwrt, 456 "SAR EWRD: chain %d profile index %d\n", 457 i, profs[i]); 458 IWL_DEBUG_RADIO(fwrt, " Chain[%d]:\n", i); 459 for (j = 0; j < n_subbands; j++) { 460 idx = i * ACPI_SAR_NUM_SUB_BANDS + j; 461 per_chain[i * n_subbands + j] = 462 cpu_to_le16(prof->table[idx]); 463 IWL_DEBUG_RADIO(fwrt, " Band[%d] = %d * .125dBm\n", 464 j, prof->table[idx]); 465 } 466 } 467 468 return 0; 469} 470 471int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt, 472 __le16 *per_chain, u32 n_tables, u32 n_subbands, 473 int prof_a, int prof_b) 474{ 475 int i, ret = 0; 476 477 for (i = 0; i < n_tables; i++) { 478 ret = iwl_sar_fill_table(fwrt, 479 &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAIN_LIMITS], 480 n_subbands, prof_a, prof_b); 481 if (ret) 482 break; 483 } 484 485 return ret; 486} 487IWL_EXPORT_SYMBOL(iwl_sar_select_profile); 488 489int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt) 490{ 491 union acpi_object *wifi_pkg, *table, *data; 492 bool enabled; 493 int ret, tbl_rev; 494 495 data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD); 496 if (IS_ERR(data)) 497 return PTR_ERR(data); 498 499 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 500 ACPI_WRDS_WIFI_DATA_SIZE, &tbl_rev); 501 if (IS_ERR(wifi_pkg) || tbl_rev != 0) { 502 ret = PTR_ERR(wifi_pkg); 503 goto out_free; 504 } 505 506 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { 507 ret = -EINVAL; 508 goto out_free; 509 } 510 511 enabled = !!(wifi_pkg->package.elements[1].integer.value); 512 513 /* position of the actual table */ 514 table = &wifi_pkg->package.elements[2]; 515 516 /* The profile from WRDS is officially profile 1, but goes 517 * into sar_profiles[0] (because we don't have a profile 0). 518 */ 519 ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0], enabled); 520out_free: 521 kfree(data); 522 return ret; 523} 524IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table); 525 526int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt) 527{ 528 union acpi_object *wifi_pkg, *data; 529 bool enabled; 530 int i, n_profiles, tbl_rev, pos; 531 int ret = 0; 532 533 data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD); 534 if (IS_ERR(data)) 535 return PTR_ERR(data); 536 537 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 538 ACPI_EWRD_WIFI_DATA_SIZE, &tbl_rev); 539 if (IS_ERR(wifi_pkg) || tbl_rev != 0) { 540 ret = PTR_ERR(wifi_pkg); 541 goto out_free; 542 } 543 544 if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || 545 wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) { 546 ret = -EINVAL; 547 goto out_free; 548 } 549 550 enabled = !!(wifi_pkg->package.elements[1].integer.value); 551 n_profiles = wifi_pkg->package.elements[2].integer.value; 552 553 /* 554 * Check the validity of n_profiles. The EWRD profiles start 555 * from index 1, so the maximum value allowed here is 556 * ACPI_SAR_PROFILES_NUM - 1. 557 */ 558 if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) { 559 ret = -EINVAL; 560 goto out_free; 561 } 562 563 /* the tables start at element 3 */ 564 pos = 3; 565 566 for (i = 0; i < n_profiles; i++) { 567 /* The EWRD profiles officially go from 2 to 4, but we 568 * save them in sar_profiles[1-3] (because we don't 569 * have profile 0). So in the array we start from 1. 570 */ 571 ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos], 572 &fwrt->sar_profiles[i + 1], 573 enabled); 574 if (ret < 0) 575 break; 576 577 /* go to the next table */ 578 pos += ACPI_SAR_TABLE_SIZE; 579 } 580 581out_free: 582 kfree(data); 583 return ret; 584} 585IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table); 586 587int iwl_sar_get_wgds_table(struct iwl_fw_runtime *fwrt) 588{ 589 union acpi_object *wifi_pkg, *data; 590 int i, j, ret, tbl_rev; 591 int idx = 1; 592 593 data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD); 594 if (IS_ERR(data)) 595 return PTR_ERR(data); 596 597 wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, 598 ACPI_WGDS_WIFI_DATA_SIZE, &tbl_rev); 599 if (IS_ERR(wifi_pkg) || tbl_rev > 1) { 600 ret = PTR_ERR(wifi_pkg); 601 goto out_free; 602 } 603 604 fwrt->geo_rev = tbl_rev; 605 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) { 606 for (j = 0; j < ACPI_GEO_TABLE_SIZE; j++) { 607 union acpi_object *entry; 608 609 entry = &wifi_pkg->package.elements[idx++]; 610 if (entry->type != ACPI_TYPE_INTEGER || 611 entry->integer.value > U8_MAX) { 612 ret = -EINVAL; 613 goto out_free; 614 } 615 616 fwrt->geo_profiles[i].values[j] = entry->integer.value; 617 } 618 } 619 ret = 0; 620out_free: 621 kfree(data); 622 return ret; 623} 624IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table); 625 626bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt) 627{ 628 /* 629 * The GEO_TX_POWER_LIMIT command is not supported on earlier 630 * firmware versions. Unfortunately, we don't have a TLV API 631 * flag to rely on, so rely on the major version which is in 632 * the first byte of ucode_ver. This was implemented 633 * initially on version 38 and then backported to 17. It was 634 * also backported to 29, but only for 7265D devices. The 635 * intention was to have it in 36 as well, but not all 8000 636 * family got this feature enabled. The 8000 family is the 637 * only one using version 36, so skip this version entirely. 638 */ 639 return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 || 640 IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 || 641 (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 && 642 ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) == 643 CSR_HW_REV_TYPE_7265D)); 644} 645IWL_EXPORT_SYMBOL(iwl_sar_geo_support); 646 647int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt, 648 struct iwl_per_chain_offset *table, u32 n_bands) 649{ 650 int ret, i, j; 651 652 if (!iwl_sar_geo_support(fwrt)) 653 return -EOPNOTSUPP; 654 655 ret = iwl_sar_get_wgds_table(fwrt); 656 if (ret < 0) { 657 IWL_DEBUG_RADIO(fwrt, 658 "Geo SAR BIOS table invalid or unavailable. (%d)\n", 659 ret); 660 /* we don't fail if the table is not available */ 661 return -ENOENT; 662 } 663 664 for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) { 665 for (j = 0; j < n_bands; j++) { 666 struct iwl_per_chain_offset *chain = 667 &table[i * n_bands + j]; 668 u8 *value; 669 670 if (j * ACPI_GEO_PER_CHAIN_SIZE >= 671 ARRAY_SIZE(fwrt->geo_profiles[0].values)) 672 /* 673 * Currently we only store lb an hb values, and 674 * don't have any special ones for uhb. So leave 675 * those empty for the time being 676 */ 677 break; 678 679 value = &fwrt->geo_profiles[i].values[j * 680 ACPI_GEO_PER_CHAIN_SIZE]; 681 chain->max_tx_power = cpu_to_le16(value[0]); 682 chain->chain_a = value[1]; 683 chain->chain_b = value[2]; 684 IWL_DEBUG_RADIO(fwrt, 685 "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n", 686 i, j, value[1], value[2], value[0]); 687 } 688 } 689 690 return 0; 691} 692IWL_EXPORT_SYMBOL(iwl_sar_geo_init); 693