diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/acpi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 1185 |
1 files changed, 1185 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 000000000..585e8cd2d --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -0,0 +1,1185 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2017 Intel Deutschland GmbH + * Copyright (C) 2019-2022 Intel Corporation + */ +#include <linux/uuid.h> +#include <linux/dmi.h> +#include "iwl-drv.h" +#include "iwl-debug.h" +#include "acpi.h" +#include "fw/runtime.h" + +const guid_t iwl_guid = GUID_INIT(0xF21202BF, 0x8F78, 0x4DC6, + 0xA5, 0xB3, 0x1F, 0x73, + 0x8E, 0x28, 0x5A, 0xDE); +IWL_EXPORT_SYMBOL(iwl_guid); + +const guid_t iwl_rfi_guid = GUID_INIT(0x7266172C, 0x220B, 0x4B29, + 0x81, 0x4F, 0x75, 0xE4, + 0xDD, 0x26, 0xB5, 0xFD); +IWL_EXPORT_SYMBOL(iwl_rfi_guid); + +static const struct dmi_system_id dmi_ppag_approved_list[] = { + { .ident = "HP", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HP"), + }, + }, + { .ident = "SAMSUNG", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD"), + }, + }, + { .ident = "MSFT", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + }, + }, + { .ident = "ASUS", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + }, + }, + {} +}; + +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; +} + +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; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_object); + +/* + * Generic function for evaluating a method defined in the device specific + * method (DSM) interface. The returned acpi object must be freed by calling + * function. + */ +static void *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 = 0; + + 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))) + return -EINVAL; + + /* 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, ret=%d\n", + func, ret); +out: + ACPI_FREE(obj); + return ret; +} + +/* + * Evaluate a DSM with no arguments and a u8 return value, + */ +int iwl_acpi_get_dsm_u8(struct device *dev, int rev, int func, + const guid_t *guid, u8 *value) +{ + int ret; + u64 val; + + ret = iwl_acpi_get_dsm_integer(dev, rev, func, + guid, &val, sizeof(u8)); + + if (ret < 0) + return ret; + + /* cast val (u64) to be u8 */ + *value = (u8)val; + return 0; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u8); + +/* + * Evaluate a DSM with no arguments and a u32 return value, + */ +int iwl_acpi_get_dsm_u32(struct device *dev, int rev, int func, + const guid_t *guid, u32 *value) +{ + int ret; + u64 val; + + ret = iwl_acpi_get_dsm_integer(dev, rev, func, + guid, &val, sizeof(u32)); + + if (ret < 0) + return ret; + + /* cast val (u64) to be u32 */ + *value = (u32)val; + return 0; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm_u32); + +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; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_wifi_pkg_range); + +int iwl_acpi_get_tas(struct iwl_fw_runtime *fwrt, + union iwl_tas_config_cmd *cmd, int fw_ver) +{ + union acpi_object *wifi_pkg, *data; + int ret, tbl_rev, i, block_list_size, enabled; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_WTAS_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* try to read wtas table revision 1 or revision 0*/ + 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 == 1 && wifi_pkg->package.elements[1].type == + ACPI_TYPE_INTEGER) { + u32 tas_selection = + (u32)wifi_pkg->package.elements[1].integer.value; + u16 override_iec = + (tas_selection & ACPI_WTAS_OVERRIDE_IEC_MSK) >> ACPI_WTAS_OVERRIDE_IEC_POS; + u16 enabled_iec = (tas_selection & ACPI_WTAS_ENABLE_IEC_MSK) >> + ACPI_WTAS_ENABLE_IEC_POS; + u8 usa_tas_uhb = (tas_selection & ACPI_WTAS_USA_UHB_MSK) >> ACPI_WTAS_USA_UHB_POS; + + + enabled = tas_selection & ACPI_WTAS_ENABLED_MSK; + if (fw_ver <= 3) { + cmd->v3.override_tas_iec = cpu_to_le16(override_iec); + cmd->v3.enable_tas_iec = cpu_to_le16(enabled_iec); + } else { + cmd->v4.usa_tas_uhb_allowed = usa_tas_uhb; + cmd->v4.override_tas_iec = (u8)override_iec; + cmd->v4.enable_tas_iec = (u8)enabled_iec; + } + + } else if (tbl_rev == 0 && + wifi_pkg->package.elements[1].type == ACPI_TYPE_INTEGER) { + enabled = !!wifi_pkg->package.elements[1].integer.value; + } else { + ret = -EINVAL; + goto out_free; + } + + if (!enabled) { + IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n"); + ret = 0; + goto out_free; + } + + 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 > + APCI_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; + cmd->v4.block_list_size = cpu_to_le32(block_list_size); + + IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", block_list_size); + if (block_list_size > APCI_WTAS_BLACK_LIST_MAX) { + IWL_DEBUG_RADIO(fwrt, "TAS invalid array size value %u\n", + block_list_size); + ret = -EINVAL; + goto out_free; + } + + for (i = 0; i < block_list_size; i++) { + u32 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; + cmd->v4.block_list_array[i] = cpu_to_le32(country); + IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", country); + } + + ret = 1; +out_free: + kfree(data); + return ret; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_tas); + +int iwl_acpi_get_mcc(struct device *dev, char *mcc) +{ + union acpi_object *wifi_pkg, *data; + u32 mcc_val; + int ret, tbl_rev; + + data = iwl_acpi_get_object(dev, ACPI_WRDD_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + wifi_pkg = iwl_acpi_get_wifi_pkg(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; + + mcc[0] = (mcc_val >> 8) & 0xff; + mcc[1] = mcc_val & 0xff; + mcc[2] = '\0'; + + ret = 0; +out_free: + kfree(data); + return ret; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_mcc); + +u64 iwl_acpi_get_pwr_limit(struct device *dev) +{ + union acpi_object *data, *wifi_pkg; + u64 dflt_pwr_limit; + int tbl_rev; + + data = iwl_acpi_get_object(dev, ACPI_SPLC_METHOD); + if (IS_ERR(data)) { + dflt_pwr_limit = 0; + goto out; + } + + wifi_pkg = iwl_acpi_get_wifi_pkg(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) { + dflt_pwr_limit = 0; + goto out_free; + } + + dflt_pwr_limit = wifi_pkg->package.elements[1].integer.value; +out_free: + kfree(data); +out: + return dflt_pwr_limit; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_pwr_limit); + +int iwl_acpi_get_eckv(struct device *dev, u32 *extl_clk) +{ + union acpi_object *wifi_pkg, *data; + int ret, tbl_rev; + + data = iwl_acpi_get_object(dev, ACPI_ECKV_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + wifi_pkg = iwl_acpi_get_wifi_pkg(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; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_eckv); + +static int iwl_sar_set_profile(union acpi_object *table, + struct iwl_sar_profile *profile, + bool enabled, u8 num_chains, u8 num_sub_bands) +{ + int i, j, idx = 0; + + /* + * The table from ACPI is flat, but we store it in a + * structured array. + */ + for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV2; i++) { + for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS_REV2; j++) { + /* if we don't have the values, use the default */ + if (i >= num_chains || j >= num_sub_bands) { + profile->chains[i].subbands[j] = 0; + } else { + if (table[idx].type != ACPI_TYPE_INTEGER || + table[idx].integer.value > U8_MAX) + return -EINVAL; + + profile->chains[i].subbands[j] = + table[idx].integer.value; + + idx++; + } + } + } + + /* Only if all values were valid can the profile be enabled */ + profile->enabled = enabled; + + return 0; +} + +static int iwl_sar_fill_table(struct iwl_fw_runtime *fwrt, + __le16 *per_chain, u32 n_subbands, + int prof_a, int prof_b) +{ + int profs[ACPI_SAR_NUM_CHAINS_REV0] = { prof_a, prof_b }; + int i, j; + + for (i = 0; i < ACPI_SAR_NUM_CHAINS_REV0; i++) { + struct iwl_sar_profile *prof; + + /* don't allow SAR to be disabled (profile 0 means disable) */ + if (profs[i] == 0) + return -EPERM; + + /* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */ + if (profs[i] > ACPI_SAR_PROFILE_NUM) + return -EINVAL; + + /* profiles go from 1 to 4, so decrement to access the array */ + prof = &fwrt->sar_profiles[profs[i] - 1]; + + /* if the profile is disabled, do nothing */ + if (!prof->enabled) { + IWL_DEBUG_RADIO(fwrt, "SAR profile %d is disabled.\n", + profs[i]); + /* + * if one of the profiles is disabled, we + * ignore all of them and return 1 to + * differentiate disabled from other failures. + */ + return 1; + } + + IWL_DEBUG_INFO(fwrt, + "SAR EWRD: chain %d profile index %d\n", + i, profs[i]); + IWL_DEBUG_RADIO(fwrt, " Chain[%d]:\n", i); + for (j = 0; j < n_subbands; j++) { + per_chain[i * n_subbands + j] = + cpu_to_le16(prof->chains[i].subbands[j]); + IWL_DEBUG_RADIO(fwrt, " Band[%d] = %d * .125dBm\n", + j, prof->chains[i].subbands[j]); + } + } + + return 0; +} + +int iwl_sar_select_profile(struct iwl_fw_runtime *fwrt, + __le16 *per_chain, u32 n_tables, u32 n_subbands, + int prof_a, int prof_b) +{ + int i, ret = 0; + + for (i = 0; i < n_tables; i++) { + ret = iwl_sar_fill_table(fwrt, + &per_chain[i * n_subbands * ACPI_SAR_NUM_CHAINS_REV0], + n_subbands, prof_a, prof_b); + if (ret) + break; + } + + return ret; +} +IWL_EXPORT_SYMBOL(iwl_sar_select_profile); + +int iwl_sar_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 = PTR_ERR(wifi_pkg); + 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 = PTR_ERR(wifi_pkg); + 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 = PTR_ERR(wifi_pkg); + 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_sar_set_profile(table, &fwrt->sar_profiles[0], + flags & IWL_SAR_ENABLE_MSK, + num_chains, num_sub_bands); +out_free: + kfree(data); + return ret; +} +IWL_EXPORT_SYMBOL(iwl_sar_get_wrds_table); + +int iwl_sar_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_chains, 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 = PTR_ERR(wifi_pkg); + 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_EWRD_WIFI_DATA_SIZE_REV1, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 1) { + ret = PTR_ERR(wifi_pkg); + 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_EWRD_WIFI_DATA_SIZE_REV0, + &tbl_rev); + if (!IS_ERR(wifi_pkg)) { + if (tbl_rev != 0) { + ret = PTR_ERR(wifi_pkg); + 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 || + 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 <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) { + ret = -EINVAL; + goto out_free; + } + + /* the tables start at element 3 */ + pos = 3; + + for (i = 0; i < n_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. + */ + ret = iwl_sar_set_profile(&wifi_pkg->package.elements[pos], + &fwrt->sar_profiles[i + 1], enabled, + num_chains, num_sub_bands); + if (ret < 0) + break; + + /* go to the next table */ + pos += num_chains * num_sub_bands; + } + +out_free: + kfree(data); + return ret; +} +IWL_EXPORT_SYMBOL(iwl_sar_get_ewrd_table); + +int iwl_sar_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 = 3, + }, + { + .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) { + ret = -EINVAL; + goto out_free; + } + num_profiles = entry->integer.value; + + /* + * this also validates >= min_profiles since we + * otherwise wouldn't have gotten the data when + * looking up in ACPI + */ + if (wifi_pkg->package.count != + hdr_size + profile_size * num_profiles) { + ret = -EINVAL; + goto out_free; + } + } + 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 < ACPI_GEO_NUM_BANDS_REV2; 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 < ACPI_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; +} +IWL_EXPORT_SYMBOL(iwl_sar_get_wgds_table); + +bool iwl_sar_geo_support(struct iwl_fw_runtime *fwrt) +{ + /* + * The PER_CHAIN_LIMIT_OFFSET_CMD command is not supported on + * earlier firmware versions. Unfortunately, we don't have a + * TLV API flag to rely on, so rely on the major version which + * is in the first byte of ucode_ver. This was implemented + * initially on version 38 and then backported to 17. It was + * also backported to 29, but only for 7265D devices. The + * intention was to have it in 36 as well, but not all 8000 + * family got this feature enabled. The 8000 family is the + * only one using version 36, so skip this version entirely. + */ + return IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) >= 38 || + (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 17 && + fwrt->trans->hw_rev != CSR_HW_REV_TYPE_3160) || + (IWL_UCODE_SERIAL(fwrt->fw->ucode_ver) == 29 && + ((fwrt->trans->hw_rev & CSR_HW_REV_TYPE_MSK) == + CSR_HW_REV_TYPE_7265D)); +} +IWL_EXPORT_SYMBOL(iwl_sar_geo_support); + +int iwl_sar_geo_init(struct iwl_fw_runtime *fwrt, + struct iwl_per_chain_offset *table, + u32 n_bands, u32 n_profiles) +{ + int i, j; + + if (!fwrt->geo_enabled) + return -ENODATA; + + if (!iwl_sar_geo_support(fwrt)) + return -EOPNOTSUPP; + + for (i = 0; i < n_profiles; i++) { + for (j = 0; j < n_bands; j++) { + struct iwl_per_chain_offset *chain = + &table[i * n_bands + j]; + + chain->max_tx_power = + cpu_to_le16(fwrt->geo_profiles[i].bands[j].max); + chain->chain_a = fwrt->geo_profiles[i].bands[j].chains[0]; + chain->chain_b = fwrt->geo_profiles[i].bands[j].chains[1]; + IWL_DEBUG_RADIO(fwrt, + "SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n", + i, j, + fwrt->geo_profiles[i].bands[j].chains[0], + fwrt->geo_profiles[i].bands[j].chains[1], + fwrt->geo_profiles[i].bands[j].max); + } + } + + return 0; +} +IWL_EXPORT_SYMBOL(iwl_sar_geo_init); + +__le32 iwl_acpi_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) +{ + int ret; + u8 value; + __le32 config_bitmap = 0; + + /* + ** Evaluate func 'DSM_FUNC_ENABLE_INDONESIA_5G2' + */ + ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0, + DSM_FUNC_ENABLE_INDONESIA_5G2, + &iwl_guid, &value); + + if (!ret && value == DSM_VALUE_INDONESIA_ENABLE) + config_bitmap |= + cpu_to_le32(LARI_CONFIG_ENABLE_5G2_IN_INDONESIA_MSK); + + /* + ** Evaluate func 'DSM_FUNC_DISABLE_SRD' + */ + ret = iwl_acpi_get_dsm_u8(fwrt->dev, 0, + DSM_FUNC_DISABLE_SRD, + &iwl_guid, &value); + if (!ret) { + if (value == DSM_VALUE_SRD_PASSIVE) + config_bitmap |= + cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_PASSIVE_MSK); + else if (value == DSM_VALUE_SRD_DISABLE) + config_bitmap |= + cpu_to_le32(LARI_CONFIG_CHANGE_ETSI_TO_DISABLED_MSK); + } + + return config_bitmap; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_lari_config_bitmap); + +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; + + fwrt->ppag_flags = 0; + + data = iwl_acpi_get_object(fwrt->dev, ACPI_PPAG_METHOD); + if (IS_ERR(data)) + return PTR_ERR(data); + + /* try to read ppag table rev 2 or 1 (both 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 == 2) { + num_sub_bands = IWL_NUM_SUB_BANDS_V2; + IWL_DEBUG_RADIO(fwrt, + "Reading PPAG table v2 (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; + } + +read_table: + fwrt->ppag_ver = tbl_rev; + flags = &wifi_pkg->package.elements[1]; + + if (flags->type != ACPI_TYPE_INTEGER) { + ret = -EINVAL; + goto out_free; + } + + fwrt->ppag_flags = flags->integer.value & ACPI_PPAG_MASK; + + if (!fwrt->ppag_flags) { + ret = 0; + goto out_free; + } + + /* + * 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; + + if ((j == 0 && + (fwrt->ppag_chains[i].subbands[j] > ACPI_PPAG_MAX_LB || + fwrt->ppag_chains[i].subbands[j] < ACPI_PPAG_MIN_LB)) || + (j != 0 && + (fwrt->ppag_chains[i].subbands[j] > ACPI_PPAG_MAX_HB || + fwrt->ppag_chains[i].subbands[j] < ACPI_PPAG_MIN_HB))) { + fwrt->ppag_flags = 0; + ret = -EINVAL; + goto out_free; + } + } + } + + + ret = 0; + +out_free: + kfree(data); + return ret; +} +IWL_EXPORT_SYMBOL(iwl_acpi_get_ppag_table); + +int iwl_read_ppag_table(struct iwl_fw_runtime *fwrt, union iwl_ppag_table_cmd *cmd, + int *cmd_size) +{ + u8 cmd_ver; + int i, j, num_sub_bands; + s8 *gain; + + /* many firmware images for JF lie about this */ + if (CSR_HW_RFID_TYPE(fwrt->trans->hw_rf_id) == + CSR_HW_RFID_TYPE(CSR_HW_RF_ID_TYPE_JF)) + return -EOPNOTSUPP; + + if (!fw_has_capa(&fwrt->fw->ucode_capa, IWL_UCODE_TLV_CAPA_SET_PPAG)) { + IWL_DEBUG_RADIO(fwrt, + "PPAG capability not supported by FW, command not sent.\n"); + return -EINVAL; + } + if (!fwrt->ppag_flags) { + IWL_DEBUG_RADIO(fwrt, "PPAG not enabled, command not sent.\n"); + return -EINVAL; + } + + /* The 'flags' field is the same in v1 and in v2 so we can just + * use v1 to access it. + */ + cmd->v1.flags = cpu_to_le32(fwrt->ppag_flags); + cmd_ver = iwl_fw_lookup_cmd_ver(fwrt->fw, + WIDE_ID(PHY_OPS_GROUP, PER_PLATFORM_ANT_GAIN_CMD), + IWL_FW_CMD_VER_UNKNOWN); + if (cmd_ver == 1) { + num_sub_bands = IWL_NUM_SUB_BANDS_V1; + gain = cmd->v1.gain[0]; + *cmd_size = sizeof(cmd->v1); + if (fwrt->ppag_ver == 1 || fwrt->ppag_ver == 2) { + IWL_DEBUG_RADIO(fwrt, + "PPAG table rev is %d but FW supports v1, sending truncated table\n", + fwrt->ppag_ver); + cmd->v1.flags &= cpu_to_le32(IWL_PPAG_ETSI_MASK); + } + } else if (cmd_ver == 2 || cmd_ver == 3) { + num_sub_bands = IWL_NUM_SUB_BANDS_V2; + gain = cmd->v2.gain[0]; + *cmd_size = sizeof(cmd->v2); + if (fwrt->ppag_ver == 0) { + IWL_DEBUG_RADIO(fwrt, + "PPAG table is v1 but FW supports v2, sending padded table\n"); + } else if (cmd_ver == 2 && fwrt->ppag_ver == 2) { + IWL_DEBUG_RADIO(fwrt, + "PPAG table is v3 but FW supports v2, sending partial bitmap.\n"); + cmd->v1.flags &= cpu_to_le32(IWL_PPAG_ETSI_MASK); + } + } else { + IWL_DEBUG_RADIO(fwrt, "Unsupported PPAG command version\n"); + return -EINVAL; + } + + for (i = 0; i < IWL_NUM_CHAIN_LIMITS; i++) { + for (j = 0; j < num_sub_bands; j++) { + gain[i * num_sub_bands + j] = + fwrt->ppag_chains[i].subbands[j]; + IWL_DEBUG_RADIO(fwrt, + "PPAG table: chain[%d] band[%d]: gain = %d\n", + i, j, gain[i * num_sub_bands + j]); + } + } + + return 0; +} +IWL_EXPORT_SYMBOL(iwl_read_ppag_table); + +bool iwl_acpi_is_ppag_approved(struct iwl_fw_runtime *fwrt) +{ + + if (!dmi_check_system(dmi_ppag_approved_list)) { + IWL_DEBUG_RADIO(fwrt, + "System vendor '%s' is not in the approved list, disabling PPAG.\n", + dmi_get_system_info(DMI_SYS_VENDOR)); + fwrt->ppag_flags = 0; + return false; + } + + return true; +} +IWL_EXPORT_SYMBOL(iwl_acpi_is_ppag_approved); |