diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index f8092622d988..d6cbfe6c5a17 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -550,3 +550,51 @@ 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 = 0, enabled, i; + + 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_WTAS_REVISION) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WTAS revision:%d\n", + uefi_tas->revision); + goto out; + } + + enabled = iwl_parse_tas_selection(fwrt, tas_data, + uefi_tas->tas_selection); + if (!enabled) { + IWL_DEBUG_RADIO(fwrt, "TAS not enabled\n"); + ret = 0; + goto out; + } + + 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 = cpu_to_le32(uefi_tas->black_list_size); + IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", uefi_tas->black_list_size); + + for (i = 0; i < uefi_tas->black_list_size; i++) { + tas_data->block_list_array[i] = + cpu_to_le32(uefi_tas->black_list[i]); + IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n", + uefi_tas->black_list[i]); + } +out: + kfree(uefi_tas); + return ret; +} |