diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 597 |
1 files changed, 499 insertions, 98 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index 2964c5fb11e9..48126ec6b94b 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright(c) 2021-2023 Intel Corporation + * Copyright(c) 2021-2025 Intel Corporation */ #include "iwl-drv.h" @@ -13,9 +13,12 @@ #include <linux/efi.h> #include "fw/runtime.h" -#define IWL_EFI_VAR_GUID EFI_GUID(0x92daaf2f, 0xc02b, 0x455b, \ - 0xb2, 0xec, 0xf5, 0xa3, \ - 0x59, 0x4f, 0x4a, 0xea) +#define IWL_EFI_WIFI_GUID EFI_GUID(0x92daaf2f, 0xc02b, 0x455b, \ + 0xb2, 0xec, 0xf5, 0xa3, \ + 0x59, 0x4f, 0x4a, 0xea) +#define IWL_EFI_WIFI_BT_GUID EFI_GUID(0xe65d8884, 0xd4af, 0x4b20, \ + 0x8d, 0x03, 0x77, 0x2e, \ + 0xcc, 0x3d, 0xa5, 0x31) struct iwl_uefi_pnvm_mem_desc { __le32 addr; @@ -61,7 +64,7 @@ void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len) *len = 0; - data = iwl_uefi_get_variable(IWL_UEFI_OEM_PNVM_NAME, &IWL_EFI_VAR_GUID, + data = iwl_uefi_get_variable(IWL_UEFI_OEM_PNVM_NAME, &IWL_EFI_WIFI_GUID, &package_size); if (IS_ERR(data)) { IWL_DEBUG_FW(trans, @@ -76,6 +79,54 @@ void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len) return data; } +static void * +iwl_uefi_get_verified_variable_guid(struct iwl_trans *trans, + efi_guid_t *guid, + efi_char16_t *uefi_var_name, + char *var_name, + unsigned int expected_size, + unsigned long *size) +{ + void *var; + unsigned long var_size; + + var = iwl_uefi_get_variable(uefi_var_name, guid, &var_size); + + if (IS_ERR(var)) { + IWL_DEBUG_RADIO(trans, + "%s UEFI variable not found 0x%lx\n", var_name, + PTR_ERR(var)); + return var; + } + + if (var_size < expected_size) { + IWL_DEBUG_RADIO(trans, + "Invalid %s UEFI variable len (%lu)\n", + var_name, var_size); + kfree(var); + return ERR_PTR(-EINVAL); + } + + IWL_DEBUG_RADIO(trans, "%s from UEFI with size %lu\n", var_name, + var_size); + + if (size) + *size = var_size; + return var; +} + +static void * +iwl_uefi_get_verified_variable(struct iwl_trans *trans, + efi_char16_t *uefi_var_name, + char *var_name, + unsigned int expected_size, + unsigned long *size) +{ + return iwl_uefi_get_verified_variable_guid(trans, &IWL_EFI_WIFI_GUID, + uefi_var_name, var_name, + expected_size, size); +} + int iwl_uefi_handle_tlv_mem_desc(struct iwl_trans *trans, const u8 *data, u32 tlv_len, struct iwl_pnvm_image *pnvm_data) { @@ -168,7 +219,8 @@ done: int iwl_uefi_reduce_power_parse(struct iwl_trans *trans, const u8 *data, size_t len, - struct iwl_pnvm_image *pnvm_data) + struct iwl_pnvm_image *pnvm_data, + __le32 sku_id[3]) { const struct iwl_ucode_tlv *tlv; @@ -190,23 +242,23 @@ int iwl_uefi_reduce_power_parse(struct iwl_trans *trans, } if (tlv_type == IWL_UCODE_TLV_PNVM_SKU) { - const struct iwl_sku_id *sku_id = + const struct iwl_sku_id *tlv_sku_id = (const void *)(data + sizeof(*tlv)); IWL_DEBUG_FW(trans, "Got IWL_UCODE_TLV_PNVM_SKU len %d\n", tlv_len); IWL_DEBUG_FW(trans, "sku_id 0x%0x 0x%0x 0x%0x\n", - le32_to_cpu(sku_id->data[0]), - le32_to_cpu(sku_id->data[1]), - le32_to_cpu(sku_id->data[2])); + le32_to_cpu(tlv_sku_id->data[0]), + le32_to_cpu(tlv_sku_id->data[1]), + le32_to_cpu(tlv_sku_id->data[2])); data += sizeof(*tlv) + ALIGN(tlv_len, 4); len -= ALIGN(tlv_len, 4); - if (trans->sku_id[0] == le32_to_cpu(sku_id->data[0]) && - trans->sku_id[1] == le32_to_cpu(sku_id->data[1]) && - trans->sku_id[2] == le32_to_cpu(sku_id->data[2])) { + if (sku_id[0] == tlv_sku_id->data[0] && + sku_id[1] == tlv_sku_id->data[1] && + sku_id[2] == tlv_sku_id->data[2]) { int ret = iwl_uefi_reduce_power_section(trans, data, len, pnvm_data); @@ -230,26 +282,13 @@ u8 *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len) unsigned long package_size; u8 *data; - package = iwl_uefi_get_variable(IWL_UEFI_REDUCED_POWER_NAME, - &IWL_EFI_VAR_GUID, &package_size); - - if (IS_ERR(package)) { - IWL_DEBUG_FW(trans, - "Reduced Power UEFI variable not found 0x%lx (len %lu)\n", - PTR_ERR(package), package_size); + package = iwl_uefi_get_verified_variable(trans, + IWL_UEFI_REDUCED_POWER_NAME, + "Reduced Power", + sizeof(*package), + &package_size); + if (IS_ERR(package)) return ERR_CAST(package); - } - - if (package_size < sizeof(*package)) { - IWL_DEBUG_FW(trans, - "Invalid Reduced Power UEFI variable len (%lu)\n", - package_size); - kfree(package); - return ERR_PTR(-EINVAL); - } - - IWL_DEBUG_FW(trans, "Read reduced power from UEFI with size %lu\n", - package_size); IWL_DEBUG_FW(trans, "rev %d, total_size %d, n_skus %d\n", package->rev, package->total_size, package->n_skus); @@ -272,43 +311,28 @@ static int iwl_uefi_step_parse(struct uefi_cnv_common_step_data *common_step_dat if (common_step_data->revision != 1) return -EINVAL; - trans->mbx_addr_0_step = (u32)common_step_data->revision | + trans->conf.mbx_addr_0_step = + (u32)common_step_data->revision | (u32)common_step_data->cnvi_eq_channel << 8 | (u32)common_step_data->cnvr_eq_channel << 16 | (u32)common_step_data->radio1 << 24; - trans->mbx_addr_1_step = (u32)common_step_data->radio2; + trans->conf.mbx_addr_1_step = (u32)common_step_data->radio2; return 0; } void iwl_uefi_get_step_table(struct iwl_trans *trans) { struct uefi_cnv_common_step_data *data; - unsigned long package_size; int ret; - if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) + if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210) return; - data = iwl_uefi_get_variable(IWL_UEFI_STEP_NAME, &IWL_EFI_VAR_GUID, - &package_size); - - if (IS_ERR(data)) { - IWL_DEBUG_FW(trans, - "STEP UEFI variable not found 0x%lx\n", - PTR_ERR(data)); - return; - } - - if (package_size < sizeof(*data)) { - IWL_DEBUG_FW(trans, - "Invalid STEP table UEFI variable len (%lu)\n", - package_size); - kfree(data); + data = iwl_uefi_get_verified_variable_guid(trans, &IWL_EFI_WIFI_BT_GUID, + IWL_UEFI_STEP_NAME, + "STEP", sizeof(*data), NULL); + if (IS_ERR(data)) return; - } - - IWL_DEBUG_FW(trans, "Read STEP from UEFI with size %lu\n", - package_size); ret = iwl_uefi_step_parse(data, trans); if (ret < 0) @@ -318,7 +342,6 @@ void iwl_uefi_get_step_table(struct iwl_trans *trans) } IWL_EXPORT_SYMBOL(iwl_uefi_get_step_table); -#ifdef CONFIG_ACPI static int iwl_uefi_sgom_parse(struct uefi_cnv_wlan_sgom_data *sgom_data, struct iwl_fw_runtime *fwrt) { @@ -355,31 +378,15 @@ void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt) { struct uefi_cnv_wlan_sgom_data *data; - unsigned long package_size; int ret; if (!fwrt->geo_enabled) return; - data = iwl_uefi_get_variable(IWL_UEFI_SGOM_NAME, &IWL_EFI_VAR_GUID, - &package_size); - if (IS_ERR(data)) { - IWL_DEBUG_FW(trans, - "SGOM UEFI variable not found 0x%lx\n", - PTR_ERR(data)); - return; - } - - if (package_size < sizeof(*data)) { - IWL_DEBUG_FW(trans, - "Invalid SGOM table UEFI variable len (%lu)\n", - package_size); - kfree(data); + data = iwl_uefi_get_verified_variable(trans, IWL_UEFI_SGOM_NAME, + "SGOM", sizeof(*data), NULL); + if (IS_ERR(data)) return; - } - - IWL_DEBUG_FW(trans, "Read SGOM from UEFI with size %lu\n", - package_size); ret = iwl_uefi_sgom_parse(data, fwrt); if (ret < 0) @@ -397,45 +404,439 @@ static int iwl_uefi_uats_parse(struct uefi_cnv_wlan_uats_data *uats_data, memcpy(fwrt->uats_table.offset_map, uats_data->offset_map, sizeof(fwrt->uats_table.offset_map)); + + fwrt->uats_valid = true; + return 0; } -int iwl_uefi_get_uats_table(struct iwl_trans *trans, - struct iwl_fw_runtime *fwrt) +void iwl_uefi_get_uats_table(struct iwl_trans *trans, + struct iwl_fw_runtime *fwrt) { struct uefi_cnv_wlan_uats_data *data; - unsigned long package_size; int ret; - data = iwl_uefi_get_variable(IWL_UEFI_UATS_NAME, &IWL_EFI_VAR_GUID, - &package_size); - if (IS_ERR(data)) { - IWL_DEBUG_FW(trans, - "UATS UEFI variable not found 0x%lx\n", - PTR_ERR(data)); + data = iwl_uefi_get_verified_variable(trans, IWL_UEFI_UATS_NAME, + "UATS", sizeof(*data), NULL); + if (IS_ERR(data)) + return; + + ret = iwl_uefi_uats_parse(data, fwrt); + if (ret < 0) + IWL_DEBUG_FW(trans, "Cannot read UATS table. rev is invalid\n"); + kfree(data); +} +IWL_EXPORT_SYMBOL(iwl_uefi_get_uats_table); + +static void iwl_uefi_set_sar_profile(struct iwl_fw_runtime *fwrt, + struct uefi_sar_profile *uefi_sar_prof, + u8 prof_index, bool enabled) +{ + memcpy(&fwrt->sar_profiles[prof_index].chains, uefi_sar_prof, + sizeof(struct uefi_sar_profile)); + + fwrt->sar_profiles[prof_index].enabled = enabled & IWL_SAR_ENABLE_MSK; +} + +int iwl_uefi_get_wrds_table(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_var_wrds *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WRDS_NAME, + "WRDS", sizeof(*data), NULL); + if (IS_ERR(data)) return -EINVAL; + + if (data->revision != IWL_UEFI_WRDS_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WRDS revision:%d\n", + data->revision); + goto out; } - if (package_size < sizeof(*data)) { - IWL_DEBUG_FW(trans, - "Invalid UATS table UEFI variable len (%lu)\n", - package_size); - kfree(data); + /* The profile from WRDS is officially profile 1, but goes + * into sar_profiles[0] (because we don't have a profile 0). + */ + iwl_uefi_set_sar_profile(fwrt, &data->sar_profile, 0, data->mode); +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_ewrd_table(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_var_ewrd *data; + int i, ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_EWRD_NAME, + "EWRD", sizeof(*data), NULL); + if (IS_ERR(data)) return -EINVAL; + + if (data->revision != IWL_UEFI_EWRD_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI EWRD revision:%d\n", + data->revision); + goto out; + } + + if (data->num_profiles >= BIOS_SAR_MAX_PROFILE_NUM) { + ret = -EINVAL; + goto out; } - IWL_DEBUG_FW(trans, "Read UATS from UEFI with size %lu\n", - package_size); + for (i = 0; i < data->num_profiles; i++) + /* The EWRD profiles officially go from 2 to 4, but we + * save them in sar_profiles[1-3] (because we don't + * have profile 0). So in the array we start from 1. + */ + iwl_uefi_set_sar_profile(fwrt, &data->sar_profiles[i], i + 1, + data->mode); - ret = iwl_uefi_uats_parse(data, fwrt); - if (ret < 0) { - IWL_DEBUG_FW(trans, "Cannot read UATS table. rev is invalid\n"); - kfree(data); - return ret; +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_wgds_table(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_var_wgds *data; + int i, ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WGDS_NAME, + "WGDS", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_WGDS_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WGDS revision:%d\n", + data->revision); + goto out; + } + + if (data->num_profiles < BIOS_GEO_MIN_PROFILE_NUM || + data->num_profiles > BIOS_GEO_MAX_PROFILE_NUM) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Invalid number of profiles in WGDS: %d\n", + data->num_profiles); + goto out; } + fwrt->geo_rev = data->revision; + for (i = 0; i < data->num_profiles; i++) + memcpy(&fwrt->geo_profiles[i], &data->geo_profiles[i], + sizeof(struct iwl_geo_profile)); + + fwrt->geo_num_profiles = data->num_profiles; + fwrt->geo_enabled = true; +out: kfree(data); + return ret; +} + +int iwl_uefi_get_ppag_table(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_var_ppag *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_PPAG_NAME, + "PPAG", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision < IWL_UEFI_MIN_PPAG_REV || + data->revision > IWL_UEFI_MAX_PPAG_REV) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI PPAG revision:%d\n", + data->revision); + goto out; + } + + fwrt->ppag_bios_rev = data->revision; + fwrt->ppag_flags = iwl_bios_get_ppag_flags(data->ppag_modes, + fwrt->ppag_bios_rev); + + BUILD_BUG_ON(sizeof(fwrt->ppag_chains) != sizeof(data->ppag_chains)); + memcpy(&fwrt->ppag_chains, &data->ppag_chains, + sizeof(data->ppag_chains)); + fwrt->ppag_bios_source = BIOS_SOURCE_UEFI; +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_tas_table(struct iwl_fw_runtime *fwrt, + struct iwl_tas_data *tas_data) +{ + struct uefi_cnv_var_wtas *uefi_tas; + int ret, enabled; + + uefi_tas = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WTAS_NAME, + "WTAS", sizeof(*uefi_tas), NULL); + if (IS_ERR(uefi_tas)) + return -EINVAL; + + if (uefi_tas->revision < IWL_UEFI_MIN_WTAS_REVISION || + uefi_tas->revision > IWL_UEFI_MAX_WTAS_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WTAS revision:%d\n", + uefi_tas->revision); + goto out; + } + + IWL_DEBUG_RADIO(fwrt, "TAS selection as read from BIOS: 0x%x\n", + uefi_tas->tas_selection); + + enabled = uefi_tas->tas_selection & IWL_WTAS_ENABLED_MSK; + tas_data->table_source = BIOS_SOURCE_UEFI; + tas_data->table_revision = uefi_tas->revision; + tas_data->tas_selection = uefi_tas->tas_selection; + + IWL_DEBUG_RADIO(fwrt, "TAS %s enabled\n", + enabled ? "is" : "not"); + + IWL_DEBUG_RADIO(fwrt, "Reading TAS table revision %d\n", + uefi_tas->revision); + if (uefi_tas->black_list_size > IWL_WTAS_BLACK_LIST_MAX) { + IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %d\n", + uefi_tas->black_list_size); + ret = -EINVAL; + goto out; + } + + tas_data->block_list_size = uefi_tas->black_list_size; + IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", uefi_tas->black_list_size); + + for (u8 i = 0; i < uefi_tas->black_list_size; i++) { + tas_data->block_list_array[i] = uefi_tas->black_list[i]; + IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", + uefi_tas->black_list[i]); + } + ret = enabled; +out: + kfree(uefi_tas); + return ret; +} + +int iwl_uefi_get_pwr_limit(struct iwl_fw_runtime *fwrt, + u64 *dflt_pwr_limit) +{ + struct uefi_cnv_var_splc *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_SPLC_NAME, + "SPLC", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_SPLC_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI SPLC revision:%d\n", + data->revision); + goto out; + } + *dflt_pwr_limit = data->default_pwr_limit; +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc) +{ + struct uefi_cnv_var_wrdd *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WRDD_NAME, + "WRDD", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_WRDD_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WRDD revision:%d\n", + data->revision); + goto out; + } + + if (data->mcc != BIOS_MCC_CHINA) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "UEFI WRDD is supported only for CN\n"); + goto out; + } + + mcc[0] = (data->mcc >> 8) & 0xff; + mcc[1] = data->mcc & 0xff; + mcc[2] = '\0'; +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) +{ + struct uefi_cnv_var_eckv *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable_guid(fwrt->trans, + &IWL_EFI_WIFI_BT_GUID, + IWL_UEFI_ECKV_NAME, + "ECKV", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_ECKV_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI ECKV revision:%d\n", + data->revision); + goto out; + } + *extl_clk = data->ext_clock_valid; +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value) +{ + struct uefi_cnv_wlan_wbem_data *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WBEM_NAME, + "WBEM", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_WBEM_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WBEM revision:%d\n", + data->revision); + goto out; + } + *value = data->wbem_320mhz_per_mcc & IWL_UEFI_WBEM_REV0_MASK; + IWL_DEBUG_RADIO(fwrt, "Loaded WBEM config from UEFI\n"); +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_dsm(struct iwl_fw_runtime *fwrt, enum iwl_dsm_funcs func, + u32 *value) +{ + struct uefi_cnv_var_general_cfg *data; + int ret = -EINVAL; + + /* Not supported function index */ + if (func >= DSM_FUNC_NUM_FUNCS || func == 5) + return -EOPNOTSUPP; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_DSM_NAME, + "DSM", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_DSM_REVISION) { + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI DSM revision:%d\n", + data->revision); + goto out; + } + + if (ARRAY_SIZE(data->functions) != UEFI_MAX_DSM_FUNCS) { + IWL_DEBUG_RADIO(fwrt, "Invalid size of DSM functions array\n"); + goto out; + } + + *value = data->functions[func]; + + IWL_DEBUG_RADIO(fwrt, + "UEFI: DSM func=%d: value=%d\n", func, *value); + + ret = 0; +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_var_puncturing_data *data; + /* default value is not enabled if there is any issue in reading + * uefi variable or revision is not supported + */ + int puncturing = 0; + + data = iwl_uefi_get_verified_variable(fwrt->trans, + IWL_UEFI_PUNCTURING_NAME, + "UefiCnvWlanPuncturing", + sizeof(*data), NULL); + if (IS_ERR(data)) + return puncturing; + + if (data->revision != IWL_UEFI_PUNCTURING_REVISION) { + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI PUNCTURING rev:%d\n", + data->revision); + } else { + puncturing = data->puncturing & IWL_UEFI_PUNCTURING_REV0_MASK; + IWL_DEBUG_RADIO(fwrt, "Loaded puncturing bits from UEFI: %d\n", + puncturing); + } + + kfree(data); + return puncturing; +} +IWL_EXPORT_SYMBOL(iwl_uefi_get_puncturing); + +int iwl_uefi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value) +{ + struct uefi_cnv_wlan_dsbr_data *data; + int ret = 0; + + data = iwl_uefi_get_verified_variable_guid(fwrt->trans, + &IWL_EFI_WIFI_BT_GUID, + IWL_UEFI_DSBR_NAME, "DSBR", + sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_DSBR_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI DSBR revision:%d\n", + data->revision); + goto out; + } + *value = data->config; + IWL_DEBUG_RADIO(fwrt, "Loaded DSBR config from UEFI value: 0x%x\n", + *value); +out: + kfree(data); + return ret; +} + +int iwl_uefi_get_phy_filters(struct iwl_fw_runtime *fwrt) +{ + struct uefi_cnv_wpfc_data *data __free(kfree); + struct iwl_phy_specific_cfg *filters = &fwrt->phy_filters; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WPFC_NAME, + "WPFC", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != 0) { + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WPFC revision:%d\n", + data->revision); + return -EINVAL; + } + + BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) != + ARRAY_SIZE(data->chains)); + + for (int i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) { + filters->filter_cfg_chains[i] = cpu_to_le32(data->chains[i]); + IWL_DEBUG_RADIO(fwrt, "WPFC: chain %d: %u\n", i, data->chains[i]); + } + + IWL_DEBUG_RADIO(fwrt, "Loaded WPFC config from UEFI\n"); return 0; } -IWL_EXPORT_SYMBOL(iwl_uefi_get_uats_table); -#endif /* CONFIG_ACPI */ |