diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/api/power.h | 14 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/runtime.h | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 88 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 20 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 49 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 2 |
8 files changed, 183 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index 2e4590876bc3..0495316d1fc1 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -852,6 +852,8 @@ read_table: } } + fwrt->geo_num_profiles = num_profiles; + fwrt->geo_enabled = true; ret = 0; out_free: kfree(data); diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h b/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h index 3551a3f1c1aa..186199100929 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h @@ -34,6 +34,11 @@ enum iwl_regulatory_and_nvm_subcmd_ids { TAS_CONFIG = 0x3, /** + * @SAR_OFFSET_MAPPING_TABLE_CMD: &iwl_sar_offset_mapping_cmd + */ + SAR_OFFSET_MAPPING_TABLE_CMD = 0x4, + + /** * @PNVM_INIT_COMPLETE_NTFY: &struct iwl_pnvm_init_complete_ntfy */ PNVM_INIT_COMPLETE_NTFY = 0xFE, diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/power.h b/drivers/net/wireless/intel/iwlwifi/fw/api/power.h index 4d671c878bb7..631b96cc8ee9 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/power.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/power.h @@ -503,6 +503,20 @@ union iwl_ppag_table_cmd { } v2; } __packed; +#define MCC_TO_SAR_OFFSET_TABLE_ROW_SIZE 26 +#define MCC_TO_SAR_OFFSET_TABLE_COL_SIZE 13 + +/** + * struct iwl_sar_offset_mapping_cmd - struct for SAR_OFFSET_MAPPING_TABLE_CMD + * @offset_map: mapping a mcc to a geo sar group + * @reserved: reserved + */ +struct iwl_sar_offset_mapping_cmd { + u8 offset_map[MCC_TO_SAR_OFFSET_TABLE_ROW_SIZE] + [MCC_TO_SAR_OFFSET_TABLE_COL_SIZE]; + u16 reserved; +} __packed; /*SAR_OFFSET_MAPPING_TABLE_CMD_API_S*/ + /** * struct iwl_beacon_filter_cmd * REPLY_BEACON_FILTERING_CMD = 0xd2 (command) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/runtime.h b/drivers/net/wireless/intel/iwlwifi/fw/runtime.h index 69799f1ed2c4..cd895b614ddb 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/runtime.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/runtime.h @@ -156,8 +156,12 @@ struct iwl_fw_runtime { u8 sar_chain_b_profile; struct iwl_geo_profile geo_profiles[ACPI_NUM_GEO_PROFILES_REV3]; u32 geo_rev; + u32 geo_num_profiles; + bool geo_enabled; union iwl_ppag_table_cmd ppag_table; u32 ppag_ver; + struct iwl_sar_offset_mapping_cmd sgom_table; + bool sgom_enabled; #endif }; diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index c875bf35533c..c4dfc1aa60d5 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -11,6 +11,7 @@ #include "fw/uefi.h" #include "fw/api/alive.h" #include <linux/efi.h> +#include "fw/runtime.h" #define IWL_EFI_VAR_GUID EFI_GUID(0x92daaf2f, 0xc02b, 0x455b, \ 0xb2, 0xec, 0xf5, 0xa3, \ @@ -260,3 +261,90 @@ out: return data; } + +#ifdef CONFIG_ACPI +static int iwl_uefi_sgom_parse(struct uefi_cnv_wlan_sgom_data *sgom_data, + struct iwl_fw_runtime *fwrt) +{ + int i, j; + + if (sgom_data->revision != 1) + return -EINVAL; + + memcpy(fwrt->sgom_table.offset_map, sgom_data->offset_map, + sizeof(fwrt->sgom_table.offset_map)); + + for (i = 0; i < MCC_TO_SAR_OFFSET_TABLE_ROW_SIZE; i++) { + for (j = 0; j < MCC_TO_SAR_OFFSET_TABLE_COL_SIZE; j++) { + /* since each byte is composed of to values, */ + /* one for each letter, */ + /* extract and check each of them separately */ + u8 value = fwrt->sgom_table.offset_map[i][j]; + u8 low = value & 0xF; + u8 high = (value & 0xF0) >> 4; + + if (high > fwrt->geo_num_profiles) + high = 0; + if (low > fwrt->geo_num_profiles) + low = 0; + fwrt->sgom_table.offset_map[i][j] = (high << 4) | low; + } + } + + fwrt->sgom_enabled = true; + return 0; +} + +void iwl_uefi_get_sgom_table(struct iwl_trans *trans, + struct iwl_fw_runtime *fwrt) +{ + struct efivar_entry *sgom_efivar; + struct uefi_cnv_wlan_sgom_data *data; + unsigned long package_size; + int err, ret; + + if (!fwrt->geo_enabled) + return; + + sgom_efivar = kzalloc(sizeof(*sgom_efivar), GFP_KERNEL); + if (!sgom_efivar) + return; + + memcpy(&sgom_efivar->var.VariableName, IWL_UEFI_SGOM_NAME, + sizeof(IWL_UEFI_SGOM_NAME)); + sgom_efivar->var.VendorGuid = IWL_EFI_VAR_GUID; + + /* TODO: we hardcode a maximum length here, because reading + * from the UEFI is not working. To implement this properly, + * we have to call efivar_entry_size(). + */ + package_size = IWL_HARDCODED_SGOM_SIZE; + + data = kmalloc(package_size, GFP_KERNEL); + if (!data) { + data = ERR_PTR(-ENOMEM); + goto out; + } + + err = efivar_entry_get(sgom_efivar, NULL, &package_size, data); + if (err) { + IWL_DEBUG_FW(trans, + "SGOM UEFI variable not found %d\n", err); + goto out_free; + } + + IWL_DEBUG_FW(trans, "Read SGOM from UEFI with size %lu\n", + package_size); + + ret = iwl_uefi_sgom_parse(data, fwrt); + if (ret < 0) + IWL_DEBUG_FW(trans, "Cannot read SGOM tables. rev is invalid\n"); + +out_free: + kfree(data); + +out: + kfree(sgom_efivar); +} +IWL_EXPORT_SYMBOL(iwl_uefi_get_sgom_table); +#endif /* CONFIG_ACPI */ diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h index d552c656ac9f..09d2a971b3a0 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h @@ -7,6 +7,7 @@ #define IWL_UEFI_OEM_PNVM_NAME L"UefiCnvWlanOemSignedPnvm" #define IWL_UEFI_REDUCED_POWER_NAME L"UefiCnvWlanReducedPower" +#define IWL_UEFI_SGOM_NAME L"UefiCnvWlanSarGeoOffsetMapping" /* * TODO: we have these hardcoded values that the caller must pass, @@ -16,6 +17,7 @@ */ #define IWL_HARDCODED_PNVM_SIZE 4096 #define IWL_HARDCODED_REDUCE_POWER_SIZE 32768 +#define IWL_HARDCODED_SGOM_SIZE 339 struct pnvm_sku_package { u8 rev; @@ -25,6 +27,16 @@ struct pnvm_sku_package { u8 data[]; } __packed; +struct uefi_cnv_wlan_sgom_data { + u8 revision; + u8 offset_map[IWL_HARDCODED_SGOM_SIZE - 1]; +} __packed; + +/* + * This is known to be broken on v4.19 and to work on v5.4. Until we + * figure out why this is the case and how to make it work, simply + * disable the feature in old kernels. + */ #ifdef CONFIG_EFI void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len); void *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len); @@ -42,4 +54,12 @@ void *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len) } #endif /* CONFIG_EFI */ +#if defined(CONFIG_EFI) && defined(CONFIG_ACPI) +void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt); +#else +static inline +void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwrt) +{ +} +#endif #endif /* __iwl_fw_uefi__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index 7608b1e486c4..187637c81d1a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -518,7 +518,6 @@ static void iwl_mvm_phy_filter_init(struct iwl_mvm *mvm, cpu_to_le32(IWL_MVM_PHY_FILTER_CHAIN_D); } } - #else /* CONFIG_ACPI */ static void iwl_mvm_phy_filter_init(struct iwl_mvm *mvm, @@ -527,6 +526,49 @@ static void iwl_mvm_phy_filter_init(struct iwl_mvm *mvm, } #endif /* CONFIG_ACPI */ +#if defined(CONFIG_ACPI) && defined(CONFIG_EFI) +static int iwl_mvm_sgom_init(struct iwl_mvm *mvm) +{ + u8 cmd_ver; + int ret; + struct iwl_host_cmd cmd = { + .id = WIDE_ID(REGULATORY_AND_NVM_GROUP, + SAR_OFFSET_MAPPING_TABLE_CMD), + .flags = 0, + .data[0] = &mvm->fwrt.sgom_table, + .len[0] = sizeof(mvm->fwrt.sgom_table), + .dataflags[0] = IWL_HCMD_DFL_NOCOPY, + }; + + if (!mvm->fwrt.sgom_enabled) { + IWL_DEBUG_RADIO(mvm, "SGOM table is disabled\n"); + return 0; + } + + cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, REGULATORY_AND_NVM_GROUP, + SAR_OFFSET_MAPPING_TABLE_CMD, + IWL_FW_CMD_VER_UNKNOWN); + + if (cmd_ver != 2) { + IWL_DEBUG_RADIO(mvm, "command version is unsupported. version = %d\n", + cmd_ver); + return 0; + } + + ret = iwl_mvm_send_cmd(mvm, &cmd); + if (ret < 0) + IWL_ERR(mvm, "failed to send SAR_OFFSET_MAPPING_CMD (%d)\n", ret); + + return ret; +} +#else + +static int iwl_mvm_sgom_init(struct iwl_mvm *mvm) +{ + return 0; +} +#endif + static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm) { struct iwl_phy_cfg_cmd_v3 phy_cfg_cmd; @@ -1340,6 +1382,7 @@ static u8 iwl_mvm_eval_dsm_rfi(struct iwl_mvm *mvm) void iwl_mvm_get_acpi_tables(struct iwl_mvm *mvm) { } + #endif /* CONFIG_ACPI */ void iwl_mvm_send_recovery_cmd(struct iwl_mvm *mvm, u32 flags) @@ -1634,6 +1677,10 @@ int iwl_mvm_up(struct iwl_mvm *mvm) else if (ret < 0) goto error; + ret = iwl_mvm_sgom_init(mvm); + if (ret) + goto error; + iwl_mvm_tas_init(mvm); iwl_mvm_leds_sync(mvm); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 9c0872b106b6..cc1879e10c65 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -26,6 +26,7 @@ #include "time-event.h" #include "fw-api.h" #include "fw/acpi.h" +#include "fw/uefi.h" #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" MODULE_DESCRIPTION(DRV_DESCRIPTION); @@ -1094,6 +1095,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, &iwl_mvm_sanitize_ops, mvm, dbgfs_dir); iwl_mvm_get_acpi_tables(mvm); + iwl_uefi_get_sgom_table(trans, &mvm->fwrt); mvm->init_status = 0; |