[13/17] wifi: iwlwifi: read DSM functions from UEFI

Message ID	20240201155157.27dd626ce2bd.Ib90bab74a9d56deb2362edb712294360e4ddae5b@changeid
State	New
Headers	show Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 568985337E for <linux-wireless@vger.kernel.org>; Thu, 1 Feb 2024 14:20:17 +0000 (UTC) From: Miri Korenblit <miriam.rachel.korenblit@intel.com> To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Gregory Greenman <gregory.greenman@intel.com> Subject: [PATCH 13/17] wifi: iwlwifi: read DSM functions from UEFI Date: Thu, 1 Feb 2024 16:17:37 +0200 Message-Id: <20240201155157.27dd626ce2bd.Ib90bab74a9d56deb2362edb712294360e4ddae5b@changeid> In-Reply-To: <20240201141741.2569180-1-miriam.rachel.korenblit@intel.com> References: <20240201141741.2569180-1-miriam.rachel.korenblit@intel.com> Precedence: bulk MIME-Version: 1.0 Organization: Intel Israel (74) Limited Content-Transfer-Encoding: 8bit
Series	wifi: iwlwifi: updates - 2024-02-01 \| expand [00/17] wifi: iwlwifi: updates - 2024-02-01 [01/17] wifi: iwlwifi: prepare for reading SPLC from UEFI [02/17] wifi: iwlwifi: read SPLC from UEFI [03/17] wifi: iwlwifi: mvm: don't send NDPs for new tx devices [04/17] wifi: iwlwifi: mvm: use fast balance scan in case of an active P2P GO [05/17] wifi: iwlwifi: support link command version 2 [06/17] wifi: iwlwifi: do not announce EPCS support [07/17] wifi: iwlwifi: read WRDD table from UEFI [08/17] wifi: iwlwifi: read ECKV table from UEFI [09/17] wifi: iwlwifi: rfi: use a single DSM function for all RFI configurations [10/17] wifi: iwlwifi: take send-DSM-to-FW flows out of ACPI ifdef [11/17] wifi: iwlwifi: simplify getting DSM from ACPI [12/17] wifi: iwlwifi: prepare for reading DSM from UEFI [13/17] wifi: iwlwifi: read DSM functions from UEFI [14/17] wifi: iwlwifi: mvm: don't send BT_COEX_CI command on new devices [15/17] wifi: iwlwifi: exit eSR only after the FW does [16/17] wifi: iwlwifi: bump FW API to 88 for AX/BZ/SC devices [17/17] wifi: iwlwifi: mvm: make functions public

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index 357047223686..9afb1b1d6aea 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -187,7 +187,6 @@ int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt, return 0; } -IWL_EXPORT_SYMBOL(iwl_acpi_get_dsm); static union acpi_object * iwl_acpi_get_wifi_pkg_range(struct device *dev, diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c index 3260f21fd2e0..a42775141952 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c @@ -443,7 +443,7 @@ __le32 iwl_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) case IWL_CFG_RF_TYPE_HR2: case IWL_CFG_RF_TYPE_JF1: case IWL_CFG_RF_TYPE_JF2: - ret = iwl_acpi_get_dsm(fwrt, DSM_FUNC_ENABLE_INDONESIA_5G2, + ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_ENABLE_INDONESIA_5G2, &val); if (!ret && val == DSM_VALUE_INDONESIA_ENABLE) @@ -454,7 +454,7 @@ __le32 iwl_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) break; } - ret = iwl_acpi_get_dsm(fwrt, DSM_FUNC_DISABLE_SRD, &val); + ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_DISABLE_SRD, &val); if (!ret) { if (val == DSM_VALUE_SRD_PASSIVE) config_bitmap |= @@ -466,7 +466,7 @@ __le32 iwl_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) if (fw_has_capa(&fwrt->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT)) { - ret = iwl_acpi_get_dsm(fwrt, DSM_FUNC_REGULATORY_CONFIG, + ret = iwl_bios_get_dsm(fwrt, DSM_FUNC_REGULATORY_CONFIG, &val); /* * China 2022 enable if the BIOS object does not exist or @@ -480,3 +480,10 @@ __le32 iwl_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt) return config_bitmap; } IWL_EXPORT_SYMBOL(iwl_get_lari_config_bitmap); + +int iwl_bios_get_dsm(struct iwl_fw_runtime *fwrt, enum iwl_dsm_funcs func, + u32 *value) +{ + GET_BIOS_TABLE(dsm, fwrt, func, value); +} +IWL_EXPORT_SYMBOL(iwl_bios_get_dsm); diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h index da49ed7325d6..52389f82cbb9 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h @@ -186,4 +186,7 @@ int iwl_bios_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc); int iwl_bios_get_eckv(struct iwl_fw_runtime *fwrt, u32 *ext_clk); __le32 iwl_get_lari_config_bitmap(struct iwl_fw_runtime *fwrt); + +int iwl_bios_get_dsm(struct iwl_fw_runtime *fwrt, enum iwl_dsm_funcs func, + u32 *value); #endif /* __fw_regulatory_h__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index 4454fae84d1f..fe6d0141cd5b 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -674,3 +674,36 @@ int iwl_uefi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) kfree(data); return ret; } + +int iwl_uefi_get_dsm(struct iwl_fw_runtime *fwrt, enum iwl_dsm_funcs func, + u32 *value) +{ + struct uefi_cnv_var_general_cfg *data; + int ret = EINVAL; + + /* Not supported function index */ + if (func >= DSM_FUNC_NUM_FUNCS || func == 5) + return -EOPNOTSUPP; + + data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_DSM_NAME, + "DSM", sizeof(*data), NULL); + if (IS_ERR(data)) + return -EINVAL; + + if (data->revision != IWL_UEFI_DSM_REVISION) { + IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI DSM revision:%d\n", + data->revision); + goto out; + } + + if (ARRAY_SIZE(data->functions) != UEFI_MAX_DSM_FUNCS) { + IWL_DEBUG_RADIO(fwrt, "Invalid size of DSM functions array\n"); + goto out; + } + + *value = data->functions[func]; + ret = 0; +out: + kfree(data); + return ret; +} diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h index 723933b0b2f1..1f7c3f4c2901 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h @@ -20,6 +20,7 @@ #define IWL_UEFI_SPLC_NAME L"UefiCnvWlanSPLC" #define IWL_UEFI_WRDD_NAME L"UefiCnvWlanWRDD" #define IWL_UEFI_ECKV_NAME L"UefiCnvWlanECKV" +#define IWL_UEFI_DSM_NAME L"UefiCnvWlanGeneralCfg" #define IWL_SGOM_MAP_SIZE 339 @@ -34,6 +35,7 @@ #define IWL_UEFI_SPLC_REVISION 0 #define IWL_UEFI_WRDD_REVISION 0 #define IWL_UEFI_ECKV_REVISION 0 +#define IWL_UEFI_DSM_REVISION 4 struct pnvm_sku_package { u8 rev; @@ -166,6 +168,17 @@ struct uefi_cnv_var_eckv { u32 ext_clock_valid; } __packed; +#define UEFI_MAX_DSM_FUNCS 32 + +/* struct uefi_cnv_var_general_cfg - DSM-like table as defined in UEFI + * @revision: the revision of the table + * @functions: payload of the different DSM functions + */ +struct uefi_cnv_var_general_cfg { + u8 revision; + u32 functions[UEFI_MAX_DSM_FUNCS]; +} __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 @@ -190,6 +203,8 @@ int iwl_uefi_get_pwr_limit(struct iwl_fw_runtime *fwrt, u64 *dflt_pwr_limit); int iwl_uefi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc); int iwl_uefi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk); +int iwl_uefi_get_dsm(struct iwl_fw_runtime *fwrt, enum iwl_dsm_funcs func, + u32 *value); #else /* CONFIG_EFI */ static inline void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len) { @@ -263,6 +278,12 @@ static inline int iwl_uefi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk) { return -ENOENT; } + +static inline int iwl_uefi_get_dsm(struct iwl_fw_runtime *fwrt, + enum iwl_dsm_funcs func, u32 *value) +{ + return -ENOENT; +} #endif /* CONFIG_EFI */ #if defined(CONFIG_EFI) && defined(CONFIG_ACPI) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index 6f33f791648e..1ba3a559c1d6 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -391,7 +391,7 @@ static ssize_t iwl_dbgfs_wifi_6e_enable_read(struct file *file, char buf[12]; u32 value; - err = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_ENABLE_6E, &value); + err = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_ENABLE_6E, &value); if (err) return err; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index a05a5f403ae5..738e90a4fe2f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -1206,7 +1206,7 @@ static bool iwl_mvm_eval_dsm_rfi(struct iwl_mvm *mvm) u32 value = 0; /* default behaviour is disabled */ bool bios_enable_rfi = false; - int ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_RFI_CONFIG, &value); + int ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_RFI_CONFIG, &value); if (ret < 0) { @@ -1244,31 +1244,31 @@ static void iwl_mvm_lari_cfg(struct iwl_mvm *mvm) cmd.config_bitmap = iwl_get_lari_config_bitmap(&mvm->fwrt); - ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_11AX_ENABLEMENT, &value); + ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_11AX_ENABLEMENT, &value); if (!ret) cmd.oem_11ax_allow_bitmap = cpu_to_le32(value); - ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_ENABLE_UNII4_CHAN, &value); + ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_ENABLE_UNII4_CHAN, &value); if (!ret) cmd.oem_unii4_allow_bitmap = cpu_to_le32(value); - ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_ACTIVATE_CHANNEL, &value); + ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_ACTIVATE_CHANNEL, &value); if (!ret) { if (cmd_ver < 8) value &= ~ACTIVATE_5G2_IN_WW_MASK; cmd.chan_state_active_bitmap = cpu_to_le32(value); } - ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_ENABLE_6E, &value); + ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_ENABLE_6E, &value); if (!ret) cmd.oem_uhb_allow_bitmap = cpu_to_le32(value); - ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_FORCE_DISABLE_CHANNELS, + ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_FORCE_DISABLE_CHANNELS, &value); if (!ret) cmd.force_disable_channels_bitmap = cpu_to_le32(value); - ret = iwl_acpi_get_dsm(&mvm->fwrt, DSM_FUNC_ENERGY_DETECTION_THRESHOLD, + ret = iwl_bios_get_dsm(&mvm->fwrt, DSM_FUNC_ENERGY_DETECTION_THRESHOLD, &value); if (!ret) cmd.edt_bitmap = cpu_to_le32(value);

[13/17] wifi: iwlwifi: read DSM functions from UEFI

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