diff options
| author | Miri Korenblit <miriam.rachel.korenblit@intel.com> | 2024-01-31 10:24:43 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-02-02 14:15:15 +0100 |
| commit | bc8d0a4528f167742ecb511ba663795235e9d15c (patch) | |
| tree | c46acbdbb06c08c4ee6a7a5e2be37801fba386cc /drivers/net/wireless/intel/iwlwifi/fw/uefi.c | |
| parent | 8408e83e16bb4d1d8f0ccf6937cae0357478ec50 (diff) | |
wifi: iwlwifi: read PPAG table from UEFI
Try to read the PPAG table from UEFI first,
and if the WIFI UEFI tables are unlocked or the
table doesn't exist - try to read it from ACPI
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://msgid.link/20240131091413.6516da09aec1.I0dcaf0b6d8857417ba1318467a28da5d0d7d7f27@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index a777cd4c70f7..f8092622d988 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -521,3 +521,32 @@ 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_ver = data->revision; + fwrt->ppag_flags = data->ppag_modes & IWL_PPAG_ETSI_CHINA_MASK; + + BUILD_BUG_ON(sizeof(fwrt->ppag_chains) != sizeof(data->ppag_chains)); + memcpy(&fwrt->ppag_chains, &data->ppag_chains, + sizeof(data->ppag_chains)); +out: + kfree(data); + return ret; +} |