diff options
| author | Luca Coelho <luciano.coelho@intel.com> | 2021-06-21 10:37:36 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-06-22 16:57:57 +0300 |
| commit | 9dad325f9d57508b154f0bebbc341a8528e5729c (patch) | |
| tree | 85b7bfb455ae2e46264fa5477da402d0857b6132 /drivers/net/wireless/intel/iwlwifi/fw/uefi.h | |
| parent | 84c3c9952afbf7df39937095aa0ad70b58703e91 (diff) | |
iwlwifi: support loading the reduced power table from UEFI
This new feature allows OEMs to set a special reduced power table in a
UEFI variable, which we use to tell the firmware to change the TX
power tables.
Read the variable and store it in a dram block to pass it to the
firmware. We do this as part of the PNVM loading flow.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210621103449.259a33ba5074.I2e0bb142d2a9c412547cba89b62dd077b328fdc4@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.h')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h index 48f1b54e3e76..45d0b36d79b5 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h @@ -4,7 +4,8 @@ */ -#define IWL_UEFI_OEM_PNVM_NAME L"UefiCnvWlanOemSignedPnvm" +#define IWL_UEFI_OEM_PNVM_NAME L"UefiCnvWlanOemSignedPnvm" +#define IWL_UEFI_REDUCED_POWER_NAME L"UefiCnvWlanReducedPower" /* * TODO: we have these hardcoded values that the caller must pass, @@ -12,14 +13,30 @@ * properly, we have to change iwl_pnvm_get_from_uefi() to call * efivar_entry_size() and return the value to the caller instead. */ -#define IWL_HARDCODED_PNVM_SIZE 4096 +#define IWL_HARDCODED_PNVM_SIZE 4096 +#define IWL_HARDCODED_REDUCE_POWER_SIZE 32768 + +struct pnvm_sku_package { + u8 rev; + u32 total_size; + u8 n_skus; + u32 reserved[2]; + u8 data[]; +} __packed; #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); #else /* CONFIG_EFI */ static inline void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len) { return ERR_PTR(-EOPNOTSUPP); } + +static inline +void *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len) +{ + return ERR_PTR(-EOPNOTSUPP); +} #endif /* CONFIG_EFI */ |