diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/acpi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 1083 |
1 files changed, 1083 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c new file mode 100644 index 000000000000..52edc19d8cdd --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -0,0 +1,1083 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2017 Intel Deutschland GmbH + * Copyright (C) 2019-2025 Intel Corporation + */ +#include <linux/uuid.h> +#include "iwl-drv.h" +#include "iwl-debug.h" +#include "acpi.h" +#include "fw/runtime.h" + +static const guid_t iwl_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6, + 0xA5, 0xB3, 0x1F, 0x73, + 0x8E, 0x28, 0x5A, 0xDE); + +static const size_t acpi_dsm_size[DSM_FUNC_NUM_FUNCS] = { + [DSM_FUNC_QUERY] = sizeof(u32), + [DSM_FUNC_DISABLE_SRD] = sizeof(u8), + [DSM_FUNC_ENABLE_INDONESIA_5G2] = sizeof(u8), + [DSM_FUNC_ENABLE_6E] = sizeof(u32), + [DSM_FUNC_REGULATORY_CONFIG] = sizeof(u32), + /* Not supported in driver */ + [5] = (size_t)0, + [DSM_FUNC_11AX_ENABLEMENT] = sizeof(u32), + [DSM_FUNC_ENABLE_UNII4_CHAN] = sizeof(u32), + [DSM_FUNC_ACTIVATE_CHANNEL] = sizeof(u32), + [DSM_FUNC_FORCE_DISABLE_CHANNELS] = sizeof(u32), + [DSM_FUNC_ENERGY_DETECTION_THRESHOLD] = sizeof(u32), + [DSM_FUNC_RFI_CONFIG] = sizeof(u32), + [DSM_FUNC_ENABLE_11BE] = sizeof(u32), +}; + +static int iwl_acpi_get_handle(struct device *dev, acpi_string method, + acpi_handle *ret_handle) +{ + acpi_handle root_handle; + acpi_status status; + + root_handle = ACPI_HANDLE(dev); + if (!root_handle) { + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: Could not retrieve root port handle\n"); + return -ENOENT; + } + + status = acpi_get_handle(root_handle, method, ret_handle); + if (ACPI_FAILURE(status)) { + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: %s method not found\n", method); + return -ENOENT; + } + return 0; +} + +static void *iwl_acpi_get_object(struct device *dev, acpi_string method) +{ + struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; + acpi_handle handle; + acpi_status status; + int ret; + + ret = iwl_acpi_get_handle(dev, method, &handle); + if (ret) + return ERR_PTR(-ENOENT); + + /* Call the method with no arguments */ + status = acpi_evaluate_object(handle, NULL, NULL, &buf); + if (ACPI_FAILURE(status)) { + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: %s method invocation failed (status: 0x%x)\n", + method, status); + return ERR_PTR(-ENOENT); + } + return buf.pointer; +} + +/* + * Generic function for evaluating a method defined in the device specific + * method (DSM) interface. The returned acpi object must be freed by calling + * function. + */ +union acpi_object *iwl_acpi_get_dsm_object(struct device *dev, int rev, + int func, union acpi_object *args, + const guid_t *guid) +{ + union acpi_object *obj; + + obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), guid, rev, func, + args); + if (!obj) { + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: DSM method invocation failed (rev: %d, func:%d)\n", + rev, func); + return ERR_PTR(-ENOENT); + } + return obj; +} + +/* + * Generic function to evaluate a DSM with no arguments + * and an integer return value, + * (as an integer object or inside a buffer object), + * verify and assign the value in the "value" parameter. + * return 0 in success and the appropriate errno otherwise. + */ +static int iwl_acpi_get_dsm_integer(struct device *dev, int rev, int func, + const guid_t *guid, u64 *value, + size_t expected_size) +{ + union acpi_object *obj; + int ret; + + obj = iwl_acpi_get_dsm_object(dev, rev, func, NULL, guid); + if (IS_ERR(obj)) { + IWL_DEBUG_DEV_RADIO(dev, + "Failed to get DSM object. func= %d\n", + func); + return -ENOENT; + } + + if (obj->type == ACPI_TYPE_INTEGER) { + *value = obj->integer.value; + } else if (obj->type == ACPI_TYPE_BUFFER) { + __le64 le_value = 0; + + if (WARN_ON_ONCE(expected_size > sizeof(le_value))) { + ret = -EINVAL; + goto out; + } + + /* if the buffer size doesn't match the expected size */ + if (obj->buffer.length != expected_size) + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: DSM invalid buffer size, padding or truncating (%d)\n", + obj->buffer.length); + + /* assuming LE from Intel BIOS spec */ + memcpy(&le_value, obj->buffer.pointer, + min_t(size_t, expected_size, (size_t)obj->buffer.length)); + *value = le64_to_cpu(le_value); + } else { + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: DSM method did not return a valid object, type=%d\n", + obj->type); + ret = -EINVAL; + goto out; + } + + IWL_DEBUG_DEV_RADIO(dev, + "ACPI: DSM method evaluated: func=%d, value=%lld\n", + func, *value); + ret = 0; +out: + ACPI_FREE(obj); + return ret; +} + +/* + * This function receives a DSM function number, calculates its expected size + * according to Intel BIOS spec, and fills in the value in a 32-bit field. + * In case the expected size is smaller than 32-bit, padding will be added. + */ +int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt, + enum iwl_dsm_funcs func, u32 *value) +{ + size_t expected_size; + u64 tmp; + int ret; + + BUILD_BUG_ON(ARRAY_SIZE(acpi_dsm_size) != DSM_FUNC_NUM_FUNCS); + + if (WARN_ON(func >= ARRAY_SIZE(acpi_dsm_size) || !func)) + return -EINVAL; + + expected_size = acpi_dsm_size[func]; + + /* Currently all ACPI DSMs are either 8-bit or 32-bit */ + if (expected_size != sizeof(u8) && expected_size != sizeof(u32)) + return -EOPNOTSUPP; + + if (!fwrt->acpi_dsm_funcs_valid) { + ret = iwl_acpi_get_dsm_integer(fwrt->dev, ACPI_DSM_REV, + DSM_FUNC_QUERY, + &iwl_guid, &tmp, + acpi_dsm_size[DSM_FUNC_QUERY]); + if (ret) { + /* always indicate BIT(0) to avoid re-reading */ + fwrt->acpi_dsm_funcs_valid = BIT(0); + return ret; + } + + IWL_DEBUG_RADIO(fwrt, "ACPI DSM validity bitmap 0x%x\n", + (u32)tmp); + /* always indicate BIT(0) to avoid re-reading */ + fwrt->acpi_dsm_funcs_valid = tmp | BIT(0); + } + + if (!(fwrt->acpi_dsm_funcs_valid & BIT(func))) { + IWL_DEBUG_RADIO(fwrt, "ACPI DSM %d not indicated as valid\n", + func); + return -ENODATA; + } + + ret = iwl_acpi_get_dsm_integer(fwrt->dev, ACPI_DSM_REV, func, + &iwl_guid, &tmp, expected_size); + if (ret) + return ret; + + if ((expected_size == sizeof(u8) && tmp != (u8)tmp) || + (expected_size == sizeof(u32) && tmp != (u32)tmp)) + IWL_DEBUG_RADIO(fwrt, + "DSM value overflows the expected size, truncating\n"); + *value = (u32)tmp; + + return 0; +} + +static union acpi_object * +iwl_acpi_get_wifi_pkg_range(struct device *dev, + union acpi_object *data, + int min_data_size, + int max_data_size, + int *tbl_rev) +{ + int i; + union acpi_object *wifi_pkg; + + /* + * We need at least one entry in the wifi package that + * describes the domain, and one more entry, otherwise there's + * no point in reading it. + */ + if (WARN_ON_ONCE(min_data_size < 2 || min_data_size > max_data_size)) + return ERR_PTR(-EINVAL); + + /* + * We need at least two packages, one for the revision and one + * for the data itself. Also check that the revision is valid + * (i.e. it is an integer (each caller has to check by itself + * if the returned revision is supported)). + */ + if (data->type != ACPI_TYPE_PACKAGE || + data->package.count < 2 || + data->package.elements[0].type != ACPI_TYPE_INTEGER) { + IWL_DEBUG_DEV_RADIO(dev, "Invalid packages structure\n"); + return ERR_PTR(-EINVAL); + } + + *tbl_rev = data->package.elements[0].integer.value; + + /* loop through all the packages to find the one for WiFi */ + for (i = 1; i < data->package.count; i++) { + union acpi_object *domain; + + wifi_pkg = &data->package.elements[i]; + + /* skip entries that are not a package with the right size */ + if (wifi_pkg->type != ACPI_TYPE_PACKAGE || + wifi_pkg->package.count < min_data_size || + wifi_pkg->package.count > max_data_size) + continue; + + domain = &wifi_pkg->package.elements[0]; + if (domain->type == ACPI_TYPE_INTEGER && + domain->integer.value == ACPI_WIFI_DOMAIN) + goto found; + } + + return ERR_PTR(-ENOENT); + +found: + return wifi_pkg; +} + +static union acpi_object * +iwl_acpi_get_wifi_pkg(struct device *dev, + union acpi_object *data, + int data_size, int *tbl_rev) +{ + return iwl_acpi_get_wifi_pkg_range(dev, data, data_size, data_size, + tbl_rev); +} + +int iwl_acpi_get_tas_table(struct iwl_fw_runtime *fwrt, + struct iwl_tas_data *tas_data) +{ + union acpi_object *wifi_pkg, *data; + int ret, tbl_rev, block_list_size, enabled; + u32 tas_selection; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* try to read wtas table */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WTAS_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) { + ret = PTR_ERR(wifi_pkg); + goto out_free; + } + + if (tbl_rev < 0 || tbl_rev > 2 || + wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + tas_selection = (u32)wifi_pkg->package.elements[1].integer.value; + enabled = tas_selection & IWL_WTAS_ENABLED_MSK; + + IWL_DEBUG_RADIO(fwrt, "TAS selection as read from BIOS: 0x%x\n", + tas_selection); + tas_data->table_source = BIOS_SOURCE_ACPI; + tas_data->table_revision = tbl_rev; + tas_data->tas_selection = tas_selection; + + IWL_DEBUG_RADIO(fwrt, "TAS %s enabled\n", + enabled ? "is" : "not"); + + IWL_DEBUG_RADIO(fwrt, "Reading TAS table revision %d\n", tbl_rev); + if (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER || + wifi_pkg->package.elements[2].integer.value > + IWL_WTAS_BLACK_LIST_MAX) { + IWL_DEBUG_RADIO(fwrt, "TAS invalid array size %llu\n", + wifi_pkg->package.elements[2].integer.value); + ret = -EINVAL; + goto out_free; + } + + block_list_size = wifi_pkg->package.elements[2].integer.value; + tas_data->block_list_size = block_list_size; + + IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", block_list_size); + + for (int i = 0; i < block_list_size; i++) { + u16 country; + + if (wifi_pkg->package.elements[3 + i].type != + ACPI_TYPE_INTEGER) { + IWL_DEBUG_RADIO(fwrt, + "TAS invalid array elem %d\n", 3 + i); + ret = -EINVAL; + goto out_free; + } + + country = wifi_pkg->package.elements[3 + i].integer.value; + tas_data->block_list_array[i] = country; + IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country); + } + + ret = enabled; +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc) +{ + union acpi_object *wifi_pkg, *data; + u32 mcc_val; + int ret, tbl_rev; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDD_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WRDD_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) { + ret = PTR_ERR(wifi_pkg); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || + tbl_rev != 0) { + ret = -EINVAL; + goto out_free; + } + + mcc_val = wifi_pkg->package.elements[1].integer.value; + if (mcc_val != BIOS_MCC_CHINA) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "ACPI WRDD is supported only for CN\n"); + goto out_free; + } + + mcc[0] = (mcc_val >> 8) & 0xff; + mcc[1] = mcc_val & 0xff; + mcc[2] = '\0'; + + ret = 0; +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_pwr_limit(struct iwl_fw_runtime *fwrt, u64 *dflt_pwr_limit) +{ + union acpi_object *data, *wifi_pkg; + int tbl_rev, ret = -EINVAL; + + *dflt_pwr_limit = 0; + data = iwl_acpi_get_object(fwrt->dev, ACPI_SPLC_METHOD); + if (IS_ERR(data)) + goto out; + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_SPLC_WIFI_DATA_SIZE, &tbl_rev); + if (IS_ERR(wifi_pkg) || tbl_rev != 0 || + wifi_pkg->package.elements[1].integer.value != ACPI_TYPE_INTEGER) + goto out_free; + + *dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value; + ret = 0; +out_free: + kfree(data); +out: + return ret; +} + +int iwl_acpi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) +{ + union acpi_object *wifi_pkg, *data; + int ret, tbl_rev; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_ECKV_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_ECKV_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) { + ret = PTR_ERR(wifi_pkg); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || + tbl_rev != 0) { + ret = -EINVAL; + goto out_free; + } + + *extl_clk = wifi_pkg->package.elements[1].integer.value; + + ret = 0; + +out_free: + kfree(data); + return ret; +} + +static int +iwl_acpi_parse_chains_table(union acpi_object *table, + struct iwl_sar_profile_chain *chains, + u8 num_chains, u8 num_sub_bands) +{ + for (u8 chain = 0; chain < num_chains; chain++) { + for (u8 subband = 0; subband < BIOS_SAR_MAX_SUB_BANDS_NUM; + subband++) { + /* if we don't have the values, use the default */ + if (subband >= num_sub_bands) { + chains[chain].subbands[subband] = 0; + } else if (table->type != ACPI_TYPE_INTEGER || + table->integer.value > U8_MAX) { + return -EINVAL; + } else { + chains[chain].subbands[subband] = + table->integer.value; + table++; + } + } + } + + return 0; +} + +int iwl_acpi_get_wrds_table(struct iwl_fw_runtime *fwrt) +{ + union acpi_object *wifi_pkg, *table, *data; + int ret, tbl_rev; + u32 flags; + u8 num_chains, num_sub_bands; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* start by trying to read revision 2 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WRDS_WIFI_DATA_SIZE_REV2, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 2) { + ret = -EINVAL; + goto out_free; + } + + num_chains = ACPI_SAR_NUM_CHAINS_REV2; + num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2; + + goto read_table; + } + + /* then try revision 1 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WRDS_WIFI_DATA_SIZE_REV1, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 1) { + ret = -EINVAL; + goto out_free; + } + + num_chains = ACPI_SAR_NUM_CHAINS_REV1; + num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1; + + goto read_table; + } + + /* then finally revision 0 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WRDS_WIFI_DATA_SIZE_REV0, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 0) { + ret = -EINVAL; + goto out_free; + } + + num_chains = ACPI_SAR_NUM_CHAINS_REV0; + num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0; + + goto read_table; + } + + ret = PTR_ERR(wifi_pkg); + goto out_free; + +read_table: + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev); + + flags = wifi_pkg->package.elements[1].integer.value; + fwrt->reduced_power_flags = flags >> IWL_REDUCE_POWER_FLAGS_POS; + + /* position of the actual table */ + table = &wifi_pkg->package.elements[2]; + + /* The profile from WRDS is officially profile 1, but goes + * into sar_profiles[0] (because we don't have a profile 0). + */ + ret = iwl_acpi_parse_chains_table(table, fwrt->sar_profiles[0].chains, + num_chains, num_sub_bands); + if (!ret && flags & IWL_SAR_ENABLE_MSK) + fwrt->sar_profiles[0].enabled = true; + +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_ewrd_table(struct iwl_fw_runtime *fwrt) +{ + union acpi_object *wifi_pkg, *data; + bool enabled; + int i, n_profiles, tbl_rev, pos; + int ret = 0; + u8 num_sub_bands; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_EWRD_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* start by trying to read revision 2 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_EWRD_WIFI_DATA_SIZE_REV2, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 2) { + ret = -EINVAL; + goto out_free; + } + + num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV2; + + goto read_table; + } + + /* then try revision 1 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_EWRD_WIFI_DATA_SIZE_REV1, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 1) { + ret = -EINVAL; + goto out_free; + } + + num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV1; + + goto read_table; + } + + /* then finally revision 0 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_EWRD_WIFI_DATA_SIZE_REV0, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 0) { + ret = -EINVAL; + goto out_free; + } + + num_sub_bands = ACPI_SAR_NUM_SUB_BANDS_REV0; + + goto read_table; + } + + ret = PTR_ERR(wifi_pkg); + goto out_free; + +read_table: + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || + wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + enabled = !!(wifi_pkg->package.elements[1].integer.value); + n_profiles = wifi_pkg->package.elements[2].integer.value; + + /* + * Check the validity of n_profiles. The EWRD profiles start + * from index 1, so the maximum value allowed here is + * ACPI_SAR_PROFILES_NUM - 1. + */ + if (n_profiles >= BIOS_SAR_MAX_PROFILE_NUM) { + ret = -EINVAL; + goto out_free; + } + + /* the tables start at element 3 */ + pos = 3; + + BUILD_BUG_ON(ACPI_SAR_NUM_CHAINS_REV0 != ACPI_SAR_NUM_CHAINS_REV1); + BUILD_BUG_ON(ACPI_SAR_NUM_CHAINS_REV2 != 2 * ACPI_SAR_NUM_CHAINS_REV0); + + /* parse non-cdb chains for all profiles */ + for (i = 0; i < n_profiles; i++) { + union acpi_object *table = &wifi_pkg->package.elements[pos]; + + /* 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. + */ + ret = iwl_acpi_parse_chains_table(table, + fwrt->sar_profiles[i + 1].chains, + ACPI_SAR_NUM_CHAINS_REV0, + num_sub_bands); + if (ret < 0) + goto out_free; + + /* go to the next table */ + pos += ACPI_SAR_NUM_CHAINS_REV0 * num_sub_bands; + } + + /* non-cdb table revisions */ + if (tbl_rev < 2) + goto set_enabled; + + /* parse cdb chains for all profiles */ + for (i = 0; i < n_profiles; i++) { + struct iwl_sar_profile_chain *chains; + union acpi_object *table; + + table = &wifi_pkg->package.elements[pos]; + chains = &fwrt->sar_profiles[i + 1].chains[ACPI_SAR_NUM_CHAINS_REV0]; + ret = iwl_acpi_parse_chains_table(table, + chains, + ACPI_SAR_NUM_CHAINS_REV0, + num_sub_bands); + if (ret < 0) + goto out_free; + + /* go to the next table */ + pos += ACPI_SAR_NUM_CHAINS_REV0 * num_sub_bands; + } + +set_enabled: + for (i = 0; i < n_profiles; i++) + fwrt->sar_profiles[i + 1].enabled = enabled; + +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_wgds_table(struct iwl_fw_runtime *fwrt) +{ + union acpi_object *wifi_pkg, *data; + int i, j, k, ret, tbl_rev; + u8 num_bands, num_profiles; + static const struct { + u8 revisions; + u8 bands; + u8 profiles; + u8 min_profiles; + } rev_data[] = { + { + .revisions = BIT(3), + .bands = ACPI_GEO_NUM_BANDS_REV2, + .profiles = ACPI_NUM_GEO_PROFILES_REV3, + .min_profiles = BIOS_GEO_MIN_PROFILE_NUM, + }, + { + .revisions = BIT(2), + .bands = ACPI_GEO_NUM_BANDS_REV2, + .profiles = ACPI_NUM_GEO_PROFILES, + }, + { + .revisions = BIT(0) | BIT(1), + .bands = ACPI_GEO_NUM_BANDS_REV0, + .profiles = ACPI_NUM_GEO_PROFILES, + }, + }; + int idx; + /* start from one to skip the domain */ + int entry_idx = 1; + + BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES_REV3 != IWL_NUM_GEO_PROFILES_V3); + BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES != IWL_NUM_GEO_PROFILES); + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WGDS_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* read the highest revision we understand first */ + for (idx = 0; idx < ARRAY_SIZE(rev_data); idx++) { + /* min_profiles != 0 requires num_profiles header */ + u32 hdr_size = 1 + !!rev_data[idx].min_profiles; + u32 profile_size = ACPI_GEO_PER_CHAIN_SIZE * + rev_data[idx].bands; + u32 max_size = hdr_size + profile_size * rev_data[idx].profiles; + u32 min_size; + + if (!rev_data[idx].min_profiles) + min_size = max_size; + else + min_size = hdr_size + + profile_size * rev_data[idx].min_profiles; + + wifi_pkg = iwl_acpi_get_wifi_pkg_range(fwrt->dev, data, + min_size, max_size, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (!(BIT(tbl_rev) & rev_data[idx].revisions)) + continue; + + num_bands = rev_data[idx].bands; + num_profiles = rev_data[idx].profiles; + + if (rev_data[idx].min_profiles) { + /* read header that says # of profiles */ + union acpi_object *entry; + + entry = &wifi_pkg->package.elements[entry_idx]; + entry_idx++; + if (entry->type != ACPI_TYPE_INTEGER || + entry->integer.value > num_profiles || + entry->integer.value < + rev_data[idx].min_profiles) { + ret = -EINVAL; + goto out_free; + } + + /* + * Check to see if we received package count + * same as max # of profiles + */ + if (wifi_pkg->package.count != + hdr_size + profile_size * num_profiles) { + ret = -EINVAL; + goto out_free; + } + + /* Number of valid profiles */ + num_profiles = entry->integer.value; + } + goto read_table; + } + } + + if (idx < ARRAY_SIZE(rev_data)) + ret = PTR_ERR(wifi_pkg); + else + ret = -ENOENT; + goto out_free; + +read_table: + fwrt->geo_rev = tbl_rev; + for (i = 0; i < num_profiles; i++) { + for (j = 0; j < BIOS_GEO_MAX_NUM_BANDS; j++) { + union acpi_object *entry; + + /* + * num_bands is either 2 or 3, if it's only 2 then + * fill the third band (6 GHz) with the values from + * 5 GHz (second band) + */ + if (j >= num_bands) { + fwrt->geo_profiles[i].bands[j].max = + fwrt->geo_profiles[i].bands[1].max; + } else { + entry = &wifi_pkg->package.elements[entry_idx]; + entry_idx++; + if (entry->type != ACPI_TYPE_INTEGER || + entry->integer.value > U8_MAX) { + ret = -EINVAL; + goto out_free; + } + + fwrt->geo_profiles[i].bands[j].max = + entry->integer.value; + } + + for (k = 0; k < BIOS_GEO_NUM_CHAINS; k++) { + /* same here as above */ + if (j >= num_bands) { + fwrt->geo_profiles[i].bands[j].chains[k] = + fwrt->geo_profiles[i].bands[1].chains[k]; + } else { + entry = &wifi_pkg->package.elements[entry_idx]; + entry_idx++; + if (entry->type != ACPI_TYPE_INTEGER || + entry->integer.value > U8_MAX) { + ret = -EINVAL; + goto out_free; + } + + fwrt->geo_profiles[i].bands[j].chains[k] = + entry->integer.value; + } + } + } + } + + fwrt->geo_num_profiles = num_profiles; + fwrt->geo_enabled = true; + ret = 0; +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt) +{ + union acpi_object *wifi_pkg, *data, *flags; + int i, j, ret, tbl_rev, num_sub_bands = 0; + int idx = 2; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_PPAG_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* try to read ppag table rev 1 to 4 (all have the same data size) */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_PPAG_WIFI_DATA_SIZE_V2, &tbl_rev); + + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev >= 1 && tbl_rev <= 4) { + num_sub_bands = IWL_NUM_SUB_BANDS_V2; + IWL_DEBUG_RADIO(fwrt, + "Reading PPAG table (tbl_rev=%d)\n", + tbl_rev); + goto read_table; + } else { + ret = -EINVAL; + goto out_free; + } + } + + /* try to read ppag table revision 0 */ + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_PPAG_WIFI_DATA_SIZE_V1, &tbl_rev); + + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 0) { + ret = -EINVAL; + goto out_free; + } + num_sub_bands = IWL_NUM_SUB_BANDS_V1; + IWL_DEBUG_RADIO(fwrt, "Reading PPAG table v1 (tbl_rev=0)\n"); + goto read_table; + } + + ret = PTR_ERR(wifi_pkg); + goto out_free; + +read_table: + fwrt->ppag_bios_rev = tbl_rev; + flags = &wifi_pkg->package.elements[1]; + + if (flags->type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + fwrt->ppag_flags = iwl_bios_get_ppag_flags(flags->integer.value, + fwrt->ppag_bios_rev); + + /* + * read, verify gain values and save them into the PPAG table. + * first sub-band (j=0) corresponds to Low-Band (2.4GHz), and the + * following sub-bands to High-Band (5GHz). + */ + for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) { + for (j = 0; j < num_sub_bands; j++) { + union acpi_object *ent; + + ent = &wifi_pkg->package.elements[idx++]; + if (ent->type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + fwrt->ppag_chains[i].subbands[j] = ent->integer.value; + } + } + + fwrt->ppag_bios_source = BIOS_SOURCE_ACPI; + ret = 0; + +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt) +{ + struct iwl_phy_specific_cfg *filters = &fwrt->phy_filters; + struct iwl_phy_specific_cfg tmp = {}; + union acpi_object *wifi_pkg, *data __free(kfree); + int tbl_rev, i; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WPFC_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WPFC_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) + return PTR_ERR(wifi_pkg); + + if (tbl_rev != 0) + return -EINVAL; + + BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) != + ACPI_WPFC_WIFI_DATA_SIZE - 1); + + for (i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) { + if (wifi_pkg->package.elements[i + 1].type != ACPI_TYPE_INTEGER) + return -EINVAL; + tmp.filter_cfg_chains[i] = + cpu_to_le32(wifi_pkg->package.elements[i + 1].integer.value); + } + + IWL_DEBUG_RADIO(fwrt, "Loaded WPFC filter config from ACPI\n"); + *filters = tmp; + return 0; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters); + +void iwl_acpi_get_guid_lock_status(struct iwl_fw_runtime *fwrt) +{ + union acpi_object *wifi_pkg, *data; + int tbl_rev; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_GLAI_METHOD); + if (IS_ERR(data)) + return; + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_GLAI_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) + goto out_free; + + if (tbl_rev != 0) { + IWL_DEBUG_RADIO(fwrt, "Invalid GLAI revision: %d\n", tbl_rev); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER || + wifi_pkg->package.elements[1].integer.value > ACPI_GLAI_MAX_STATUS) + goto out_free; + + fwrt->uefi_tables_lock_status = + wifi_pkg->package.elements[1].integer.value; + + IWL_DEBUG_RADIO(fwrt, + "Loaded UEFI WIFI GUID lock status: %d from ACPI\n", + fwrt->uefi_tables_lock_status); +out_free: + kfree(data); +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status); + +int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value) +{ + union acpi_object *wifi_pkg, *data; + int ret = -ENOENT; + int tbl_rev; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WBEM_METHOD); + if (IS_ERR(data)) + return ret; + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_WBEM_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) + goto out_free; + + if (tbl_rev != IWL_ACPI_WBEM_REVISION) { + IWL_DEBUG_RADIO(fwrt, "Unsupported ACPI WBEM revision:%d\n", + tbl_rev); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) + goto out_free; + + *value = wifi_pkg->package.elements[1].integer.value & + IWL_ACPI_WBEM_REV0_MASK; + IWL_DEBUG_RADIO(fwrt, "Loaded WBEM config from ACPI\n"); + ret = 0; +out_free: + kfree(data); + return ret; +} + +int iwl_acpi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value) +{ + union acpi_object *wifi_pkg, *data; + int ret = -ENOENT; + int tbl_rev; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_DSBR_METHOD); + if (IS_ERR(data)) + return ret; + + wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, + ACPI_DSBR_WIFI_DATA_SIZE, + &tbl_rev); + if (IS_ERR(wifi_pkg)) + goto out_free; + + if (tbl_rev != ACPI_DSBR_WIFI_DATA_REV) { + IWL_DEBUG_RADIO(fwrt, "Unsupported ACPI DSBR revision:%d\n", + tbl_rev); + goto out_free; + } + + if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) + goto out_free; + + *value = wifi_pkg->package.elements[1].integer.value; + IWL_DEBUG_RADIO(fwrt, "Loaded DSBR config from ACPI value: 0x%x\n", + *value); + ret = 0; +out_free: + kfree(data); + return ret; +} |