diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/uefi.h')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h new file mode 100644 index 000000000..09d2a971b --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright(c) 2021 Intel Corporation + */ +#ifndef __iwl_fw_uefi__ +#define __iwl_fw_uefi__ + +#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, + * because reading from the UEFI is not working. To implement this + * 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_REDUCE_POWER_SIZE 32768 +#define IWL_HARDCODED_SGOM_SIZE 339 + +struct pnvm_sku_package { + u8 rev; + u32 total_size; + u8 n_skus; + u32 reserved[2]; + 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); +#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 */ + +#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__ */ |