1 files changed, 661 insertions, 140 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
index 6d408cd0f517..4ae4d215e633 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright(c) 2021 Intel Corporation
+ * Copyright(c) 2021-2025 Intel Corporation
  */
 
 #include "iwl-drv.h"
@@ -13,56 +13,164 @@
 #include <linux/efi.h>
 #include "fw/runtime.h"
 
-#define IWL_EFI_VAR_GUID EFI_GUID(0x92daaf2f, 0xc02b, 0x455b,	\
-				  0xb2, 0xec, 0xf5, 0xa3,	\
-				  0x59, 0x4f, 0x4a, 0xea)
-
-void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len)
+#define IWL_EFI_WIFI_GUID	EFI_GUID(0x92daaf2f, 0xc02b, 0x455b,	\
+					 0xb2, 0xec, 0xf5, 0xa3,	\
+					 0x59, 0x4f, 0x4a, 0xea)
+#define IWL_EFI_WIFI_BT_GUID	EFI_GUID(0xe65d8884, 0xd4af, 0x4b20,	\
+					 0x8d, 0x03, 0x77, 0x2e,	\
+					 0xcc, 0x3d, 0xa5, 0x31)
+
+struct iwl_uefi_pnvm_mem_desc {
+	__le32 addr;
+	__le32 size;
+	const u8 data[];
+} __packed;
+
+static void *iwl_uefi_get_variable(efi_char16_t *name, efi_guid_t *guid,
+				   unsigned long *data_size)
 {
-	void *data;
-	unsigned long package_size;
 	efi_status_t status;
+	void *data;
 
-	*len = 0;
+	if (!data_size)
+		return ERR_PTR(-EINVAL);
 
 	if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
 		return ERR_PTR(-ENODEV);
 
-	/*
-	 * TODO: we hardcode a maximum length here, because reading
-	 * from the UEFI is not working.  To implement this properly,
-	 * we have to call efivar_entry_size().
-	 */
-	package_size = IWL_HARDCODED_PNVM_SIZE;
+	/* first call with NULL data to get the exact entry size */
+	*data_size = 0;
+	status = efi.get_variable(name, guid, NULL, data_size, NULL);
+	if (status != EFI_BUFFER_TOO_SMALL || !*data_size)
+		return ERR_PTR(-EIO);
 
-	data = kmalloc(package_size, GFP_KERNEL);
+	data = kmalloc(*data_size, GFP_KERNEL);
 	if (!data)
 		return ERR_PTR(-ENOMEM);
 
-	status = efi.get_variable(IWL_UEFI_OEM_PNVM_NAME, &IWL_EFI_VAR_GUID,
-				  NULL, &package_size, data);
+	status = efi.get_variable(name, guid, NULL, data_size, data);
 	if (status != EFI_SUCCESS) {
-		IWL_DEBUG_FW(trans,
-			     "PNVM UEFI variable not found 0x%lx (len %lu)\n",
-			     status, package_size);
 		kfree(data);
 		return ERR_PTR(-ENOENT);
 	}
 
+	return data;
+}
+
+void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len)
+{
+	unsigned long package_size;
+	void *data;
+
+	*len = 0;
+
+	data = iwl_uefi_get_variable(IWL_UEFI_OEM_PNVM_NAME, &IWL_EFI_WIFI_GUID,
+				     &package_size);
+	if (IS_ERR(data)) {
+		IWL_DEBUG_FW(trans,
+			     "PNVM UEFI variable not found 0x%lx (len %lu)\n",
+			     PTR_ERR(data), package_size);
+		return data;
+	}
+
 	IWL_DEBUG_FW(trans, "Read PNVM from UEFI with size %lu\n", package_size);
 	*len = package_size;
 
 	return data;
 }
 
-static void *iwl_uefi_reduce_power_section(struct iwl_trans *trans,
-					   const u8 *data, size_t len)
+static void *
+iwl_uefi_get_verified_variable_guid(struct iwl_trans *trans,
+				    efi_guid_t *guid,
+				    efi_char16_t *uefi_var_name,
+				    char *var_name,
+				    unsigned int expected_size,
+				    unsigned long *size)
+{
+	void *var;
+	unsigned long var_size;
+
+	var = iwl_uefi_get_variable(uefi_var_name, guid, &var_size);
+
+	if (IS_ERR(var)) {
+		IWL_DEBUG_RADIO(trans,
+				"%s UEFI variable not found 0x%lx\n", var_name,
+				PTR_ERR(var));
+		return var;
+	}
+
+	if (var_size < expected_size) {
+		IWL_DEBUG_RADIO(trans,
+				"Invalid %s UEFI variable len (%lu)\n",
+				var_name, var_size);
+		kfree(var);
+		return ERR_PTR(-EINVAL);
+	}
+
+	IWL_DEBUG_RADIO(trans, "%s from UEFI with size %lu\n", var_name,
+			var_size);
+
+	if (size)
+		*size = var_size;
+	return var;
+}
+
+static void *
+iwl_uefi_get_verified_variable(struct iwl_trans *trans,
+			       efi_char16_t *uefi_var_name,
+			       char *var_name,
+			       unsigned int expected_size,
+			       unsigned long *size)
+{
+	return iwl_uefi_get_verified_variable_guid(trans, &IWL_EFI_WIFI_GUID,
+						   uefi_var_name, var_name,
+						   expected_size, size);
+}
+
+int iwl_uefi_handle_tlv_mem_desc(struct iwl_trans *trans, const u8 *data,
+				 u32 tlv_len, struct iwl_pnvm_image *pnvm_data)
+{
+	const struct iwl_uefi_pnvm_mem_desc *desc = (const void *)data;
+	u32 data_len;
+
+	if (tlv_len < sizeof(*desc)) {
+		IWL_DEBUG_FW(trans, "TLV len (%d) is too small\n", tlv_len);
+		return -EINVAL;
+	}
+
+	data_len = tlv_len - sizeof(*desc);
+
+	IWL_DEBUG_FW(trans,
+		     "Handle IWL_UCODE_TLV_MEM_DESC, len %d data_len %d\n",
+		     tlv_len, data_len);
+
+	if (le32_to_cpu(desc->size) != data_len) {
+		IWL_DEBUG_FW(trans, "invalid mem desc size %d\n", desc->size);
+		return -EINVAL;
+	}
+
+	if (pnvm_data->n_chunks == IPC_DRAM_MAP_ENTRY_NUM_MAX) {
+		IWL_DEBUG_FW(trans, "too many payloads to allocate in DRAM.\n");
+		return -EINVAL;
+	}
+
+	IWL_DEBUG_FW(trans, "Adding data (size %d)\n", data_len);
+
+	pnvm_data->chunks[pnvm_data->n_chunks].data = desc->data;
+	pnvm_data->chunks[pnvm_data->n_chunks].len = data_len;
+	pnvm_data->n_chunks++;
+
+	return 0;
+}
+
+static int iwl_uefi_reduce_power_section(struct iwl_trans *trans,
+					 const u8 *data, size_t len,
+					 struct iwl_pnvm_image *pnvm_data)
 {
 	const struct iwl_ucode_tlv *tlv;
-	u8 *reduce_power_data = NULL, *tmp;
-	u32 size = 0;
 
 	IWL_DEBUG_FW(trans, "Handling REDUCE_POWER section\n");
+	memset(pnvm_data, 0, sizeof(*pnvm_data));
 
 	while (len >= sizeof(*tlv)) {
 		u32 tlv_len, tlv_type;
@@ -76,39 +184,17 @@ static void *iwl_uefi_reduce_power_section(struct iwl_trans *trans,
 		if (len < tlv_len) {
 			IWL_ERR(trans, "invalid TLV len: %zd/%u\n",
 				len, tlv_len);
-			kfree(reduce_power_data);
-			reduce_power_data = ERR_PTR(-EINVAL);
-			goto out;
+			return -EINVAL;
 		}
 
 		data += sizeof(*tlv);
 
 		switch (tlv_type) {
-		case IWL_UCODE_TLV_MEM_DESC: {
-			IWL_DEBUG_FW(trans,
-				     "Got IWL_UCODE_TLV_MEM_DESC len %d\n",
-				     tlv_len);
-
-			IWL_DEBUG_FW(trans, "Adding data (size %d)\n", tlv_len);
-
-			tmp = krealloc(reduce_power_data, size + tlv_len, GFP_KERNEL);
-			if (!tmp) {
-				IWL_DEBUG_FW(trans,
-					     "Couldn't allocate (more) reduce_power_data\n");
-
-				kfree(reduce_power_data);
-				reduce_power_data = ERR_PTR(-ENOMEM);
-				goto out;
-			}
-
-			reduce_power_data = tmp;
-
-			memcpy(reduce_power_data + size, data, tlv_len);
-
-			size += tlv_len;
-
+		case IWL_UCODE_TLV_MEM_DESC:
+			if (iwl_uefi_handle_tlv_mem_desc(trans, data, tlv_len,
+							 pnvm_data))
+				return -EINVAL;
 			break;
-		}
 		case IWL_UCODE_TLV_PNVM_SKU:
 			IWL_DEBUG_FW(trans,
 				     "New REDUCE_POWER section started, stop parsing.\n");
@@ -124,27 +210,19 @@ static void *iwl_uefi_reduce_power_section(struct iwl_trans *trans,
 	}
 
 done:
-	if (!size) {
+	if (!pnvm_data->n_chunks) {
 		IWL_DEBUG_FW(trans, "Empty REDUCE_POWER, skipping.\n");
-		/* Better safe than sorry, but 'reduce_power_data' should
-		 * always be NULL if !size.
-		 */
-		kfree(reduce_power_data);
-		reduce_power_data = ERR_PTR(-ENOENT);
-		goto out;
+		return -ENOENT;
 	}
-
-	IWL_INFO(trans, "loaded REDUCE_POWER\n");
-
-out:
-	return reduce_power_data;
+	return 0;
 }
 
-static void *iwl_uefi_reduce_power_parse(struct iwl_trans *trans,
-					 const u8 *data, size_t len)
+int iwl_uefi_reduce_power_parse(struct iwl_trans *trans,
+				const u8 *data, size_t len,
+				struct iwl_pnvm_image *pnvm_data,
+				__le32 sku_id[3])
 {
 	const struct iwl_ucode_tlv *tlv;
-	void *sec_data;
 
 	IWL_DEBUG_FW(trans, "Parsing REDUCE_POWER data\n");
 
@@ -160,32 +238,32 @@ static void *iwl_uefi_reduce_power_parse(struct iwl_trans *trans,
 		if (len < tlv_len) {
 			IWL_ERR(trans, "invalid TLV len: %zd/%u\n",
 				len, tlv_len);
-			return ERR_PTR(-EINVAL);
+			return -EINVAL;
 		}
 
 		if (tlv_type == IWL_UCODE_TLV_PNVM_SKU) {
-			const struct iwl_sku_id *sku_id =
+			const struct iwl_sku_id *tlv_sku_id =
 				(const void *)(data + sizeof(*tlv));
 
 			IWL_DEBUG_FW(trans,
 				     "Got IWL_UCODE_TLV_PNVM_SKU len %d\n",
 				     tlv_len);
 			IWL_DEBUG_FW(trans, "sku_id 0x%0x 0x%0x 0x%0x\n",
-				     le32_to_cpu(sku_id->data[0]),
-				     le32_to_cpu(sku_id->data[1]),
-				     le32_to_cpu(sku_id->data[2]));
+				     le32_to_cpu(tlv_sku_id->data[0]),
+				     le32_to_cpu(tlv_sku_id->data[1]),
+				     le32_to_cpu(tlv_sku_id->data[2]));
 
 			data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 			len -= ALIGN(tlv_len, 4);
 
-			if (trans->sku_id[0] == le32_to_cpu(sku_id->data[0]) &&
-			    trans->sku_id[1] == le32_to_cpu(sku_id->data[1]) &&
-			    trans->sku_id[2] == le32_to_cpu(sku_id->data[2])) {
-				sec_data = iwl_uefi_reduce_power_section(trans,
-									 data,
-									 len);
-				if (!IS_ERR(sec_data))
-					return sec_data;
+			if (sku_id[0] == tlv_sku_id->data[0] &&
+			    sku_id[1] == tlv_sku_id->data[1] &&
+			    sku_id[2] == tlv_sku_id->data[2]) {
+				int ret = iwl_uefi_reduce_power_section(trans,
+								    data, len,
+								    pnvm_data);
+				if (!ret)
+					return 0;
 			} else {
 				IWL_DEBUG_FW(trans, "SKU ID didn't match!\n");
 			}
@@ -195,58 +273,75 @@ static void *iwl_uefi_reduce_power_parse(struct iwl_trans *trans,
 		}
 	}
 
-	return ERR_PTR(-ENOENT);
+	return -ENOENT;
 }
 
-void *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len)
+u8 *iwl_uefi_get_reduced_power(struct iwl_trans *trans, size_t *len)
 {
 	struct pnvm_sku_package *package;
-	void *data = NULL;
 	unsigned long package_size;
-	efi_status_t status;
+	u8 *data;
 
-	*len = 0;
-
-	if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
-		return ERR_PTR(-ENODEV);
+	package = iwl_uefi_get_verified_variable(trans,
+						 IWL_UEFI_REDUCED_POWER_NAME,
+						 "Reduced Power",
+						 sizeof(*package),
+						 &package_size);
+	if (IS_ERR(package))
+		return ERR_CAST(package);
 
-	/*
-	 * TODO: we hardcode a maximum length here, because reading
-	 * from the UEFI is not working.  To implement this properly,
-	 * we have to call efivar_entry_size().
-	 */
-	package_size = IWL_HARDCODED_REDUCE_POWER_SIZE;
-
-	package = kmalloc(package_size, GFP_KERNEL);
-	if (!package)
-		return ERR_PTR(-ENOMEM);
+	IWL_DEBUG_FW(trans, "rev %d, total_size %d, n_skus %d\n",
+		     package->rev, package->total_size, package->n_skus);
 
-	status = efi.get_variable(IWL_UEFI_REDUCED_POWER_NAME, &IWL_EFI_VAR_GUID,
-				  NULL, &package_size, data);
-	if (status != EFI_SUCCESS) {
-		IWL_DEBUG_FW(trans,
-			     "Reduced Power UEFI variable not found 0x%lx (len %lu)\n",
-			     status, package_size);
+	*len = package_size - sizeof(*package);
+	data = kmemdup(package->data, *len, GFP_KERNEL);
+	if (!data) {
 		kfree(package);
-		return ERR_PTR(-ENOENT);
+		return ERR_PTR(-ENOMEM);
 	}
 
-	IWL_DEBUG_FW(trans, "Read reduced power from UEFI with size %lu\n",
-		     package_size);
-	*len = package_size;
+	kfree(package);
 
-	IWL_DEBUG_FW(trans, "rev %d, total_size %d, n_skus %d\n",
-		     package->rev, package->total_size, package->n_skus);
+	return data;
+}
 
-	data = iwl_uefi_reduce_power_parse(trans, package->data,
-					   *len - sizeof(*package));
+static int iwl_uefi_step_parse(struct uefi_cnv_common_step_data *common_step_data,
+			       struct iwl_trans *trans)
+{
+	if (common_step_data->revision != 1)
+		return -EINVAL;
 
-	kfree(package);
+	trans->conf.mbx_addr_0_step =
+		(u32)common_step_data->revision |
+		(u32)common_step_data->cnvi_eq_channel << 8 |
+		(u32)common_step_data->cnvr_eq_channel << 16 |
+		(u32)common_step_data->radio1 << 24;
+	trans->conf.mbx_addr_1_step = (u32)common_step_data->radio2;
+	return 0;
+}
 
-	return data;
+void iwl_uefi_get_step_table(struct iwl_trans *trans)
+{
+	struct uefi_cnv_common_step_data *data;
+	int ret;
+
+	if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
+		return;
+
+	data = iwl_uefi_get_verified_variable_guid(trans, &IWL_EFI_WIFI_BT_GUID,
+						   IWL_UEFI_STEP_NAME,
+						   "STEP", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return;
+
+	ret = iwl_uefi_step_parse(data, trans);
+	if (ret < 0)
+		IWL_DEBUG_FW(trans, "Cannot read STEP tables. rev is invalid\n");
+
+	kfree(data);
 }
+IWL_EXPORT_SYMBOL(iwl_uefi_get_step_table);
 
-#ifdef CONFIG_ACPI
 static int iwl_uefi_sgom_parse(struct uefi_cnv_wlan_sgom_data *sgom_data,
 			       struct iwl_fw_runtime *fwrt)
 {
@@ -283,42 +378,468 @@ void iwl_uefi_get_sgom_table(struct iwl_trans *trans,
 			     struct iwl_fw_runtime *fwrt)
 {
 	struct uefi_cnv_wlan_sgom_data *data;
-	unsigned long package_size;
-	efi_status_t status;
 	int ret;
 
-	if (!fwrt->geo_enabled ||
-	    !efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
+	if (!fwrt->geo_enabled)
 		return;
 
-	/* TODO: we hardcode a maximum length here, because reading
-	 * from the UEFI is not working.  To implement this properly,
-	 * we have to call efivar_entry_size().
-	 */
-	package_size = IWL_HARDCODED_SGOM_SIZE;
+	data = iwl_uefi_get_verified_variable(trans, IWL_UEFI_SGOM_NAME,
+					      "SGOM", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return;
 
-	data = kmalloc(package_size, GFP_KERNEL);
-	if (!data)
+	ret = iwl_uefi_sgom_parse(data, fwrt);
+	if (ret < 0)
+		IWL_DEBUG_FW(trans, "Cannot read SGOM tables. rev is invalid\n");
+
+	kfree(data);
+}
+IWL_EXPORT_SYMBOL(iwl_uefi_get_sgom_table);
+
+static int iwl_uefi_uats_parse(struct uefi_cnv_wlan_uats_data *uats_data,
+			       struct iwl_fw_runtime *fwrt)
+{
+	if (uats_data->revision != 1)
+		return -EINVAL;
+
+	memcpy(fwrt->uats_table.offset_map, uats_data->offset_map,
+	       sizeof(fwrt->uats_table.offset_map));
+
+	fwrt->uats_valid = true;
+
+	return 0;
+}
+
+void iwl_uefi_get_uats_table(struct iwl_trans *trans,
+			     struct iwl_fw_runtime *fwrt)
+{
+	struct uefi_cnv_wlan_uats_data *data;
+	int ret;
+
+	data = iwl_uefi_get_verified_variable(trans, IWL_UEFI_UATS_NAME,
+					      "UATS", sizeof(*data), NULL);
+	if (IS_ERR(data))
 		return;
 
-	status = efi.get_variable(IWL_UEFI_SGOM_NAME, &IWL_EFI_VAR_GUID,
-				  NULL, &package_size, data);
-	if (status != EFI_SUCCESS) {
-		IWL_DEBUG_FW(trans,
-			     "SGOM UEFI variable not found 0x%lx\n", status);
-		goto out_free;
+	ret = iwl_uefi_uats_parse(data, fwrt);
+	if (ret < 0)
+		IWL_DEBUG_FW(trans, "Cannot read UATS table. rev is invalid\n");
+	kfree(data);
+}
+IWL_EXPORT_SYMBOL(iwl_uefi_get_uats_table);
+
+static void iwl_uefi_set_sar_profile(struct iwl_fw_runtime *fwrt,
+				     struct uefi_sar_profile *uefi_sar_prof,
+				     u8 prof_index, bool enabled)
+{
+	memcpy(&fwrt->sar_profiles[prof_index].chains, uefi_sar_prof,
+	       sizeof(struct uefi_sar_profile));
+
+	fwrt->sar_profiles[prof_index].enabled = enabled & IWL_SAR_ENABLE_MSK;
+}
+
+int iwl_uefi_get_wrds_table(struct iwl_fw_runtime *fwrt)
+{
+	struct uefi_cnv_var_wrds *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WRDS_NAME,
+					      "WRDS", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_WRDS_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WRDS revision:%d\n",
+				data->revision);
+		goto out;
+	}
+
+	/* The profile from WRDS is officially profile 1, but goes
+	 * into sar_profiles[0] (because we don't have a profile 0).
+	 */
+	iwl_uefi_set_sar_profile(fwrt, &data->sar_profile, 0, data->mode);
+out:
+	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_ewrd_table(struct iwl_fw_runtime *fwrt)
+{
+	struct uefi_cnv_var_ewrd *data;
+	int i, ret = 0;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_EWRD_NAME,
+					      "EWRD", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_EWRD_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI EWRD revision:%d\n",
+				data->revision);
+		goto out;
 	}
 
-	IWL_DEBUG_FW(trans, "Read SGOM from UEFI with size %lu\n",
-		     package_size);
+	if (data->num_profiles >= BIOS_SAR_MAX_PROFILE_NUM) {
+		ret = -EINVAL;
+		goto out;
+	}
 
-	ret = iwl_uefi_sgom_parse(data, fwrt);
-	if (ret < 0)
-		IWL_DEBUG_FW(trans, "Cannot read SGOM tables. rev is invalid\n");
+	for (i = 0; i < data->num_profiles; i++)
+		/* The EWRD profiles officially go from 2 to 4, but we
+		 * save them in sar_profiles[1-3] (because we don't
+		 * have profile 0).  So in the array we start from 1.
+		 */
+		iwl_uefi_set_sar_profile(fwrt, &data->sar_profiles[i], i + 1,
+					 data->mode);
 
-out_free:
+out:
 	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_wgds_table(struct iwl_fw_runtime *fwrt)
+{
+	struct uefi_cnv_var_wgds *data;
+	int i, ret = 0;
 
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WGDS_NAME,
+					      "WGDS", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_WGDS_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WGDS revision:%d\n",
+				data->revision);
+		goto out;
+	}
+
+	if (data->num_profiles < BIOS_GEO_MIN_PROFILE_NUM ||
+	    data->num_profiles > BIOS_GEO_MAX_PROFILE_NUM) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Invalid number of profiles in WGDS: %d\n",
+				data->num_profiles);
+		goto out;
+	}
+
+	fwrt->geo_rev = data->revision;
+	for (i = 0; i < data->num_profiles; i++)
+		memcpy(&fwrt->geo_profiles[i], &data->geo_profiles[i],
+		       sizeof(struct iwl_geo_profile));
+
+	fwrt->geo_num_profiles = data->num_profiles;
+	fwrt->geo_enabled = true;
+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_bios_rev = data->revision;
+	fwrt->ppag_flags = iwl_bios_get_ppag_flags(data->ppag_modes,
+						   fwrt->ppag_bios_rev);
+
+	BUILD_BUG_ON(sizeof(fwrt->ppag_chains) != sizeof(data->ppag_chains));
+	memcpy(&fwrt->ppag_chains, &data->ppag_chains,
+	       sizeof(data->ppag_chains));
+	fwrt->ppag_bios_source = BIOS_SOURCE_UEFI;
+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, enabled;
+
+	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_MIN_WTAS_REVISION ||
+	    uefi_tas->revision > IWL_UEFI_MAX_WTAS_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WTAS revision:%d\n",
+				uefi_tas->revision);
+		goto out;
+	}
+
+	IWL_DEBUG_RADIO(fwrt, "TAS selection as read from BIOS: 0x%x\n",
+			uefi_tas->tas_selection);
+
+	enabled = uefi_tas->tas_selection & IWL_WTAS_ENABLED_MSK;
+	tas_data->table_source = BIOS_SOURCE_UEFI;
+	tas_data->table_revision = uefi_tas->revision;
+	tas_data->tas_selection = uefi_tas->tas_selection;
+
+	IWL_DEBUG_RADIO(fwrt, "TAS %s enabled\n",
+			enabled ? "is" : "not");
+
+	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 = uefi_tas->black_list_size;
+	IWL_DEBUG_RADIO(fwrt, "TAS array size %u\n", uefi_tas->black_list_size);
+
+	for (u8 i = 0; i < uefi_tas->black_list_size; i++) {
+		tas_data->block_list_array[i] = uefi_tas->black_list[i];
+		IWL_DEBUG_RADIO(fwrt, "TAS block list country %d\n",
+				uefi_tas->black_list[i]);
+	}
+	ret = enabled;
+out:
+	kfree(uefi_tas);
+	return ret;
+}
+
+int iwl_uefi_get_pwr_limit(struct iwl_fw_runtime *fwrt,
+			   u64 *dflt_pwr_limit)
+{
+	struct uefi_cnv_var_splc *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_SPLC_NAME,
+					      "SPLC", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_SPLC_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI SPLC revision:%d\n",
+				data->revision);
+		goto out;
+	}
+	*dflt_pwr_limit = data->default_pwr_limit;
+out:
+	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc)
+{
+	struct uefi_cnv_var_wrdd *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WRDD_NAME,
+					      "WRDD", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_WRDD_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WRDD revision:%d\n",
+				data->revision);
+		goto out;
+	}
+
+	if (data->mcc != BIOS_MCC_CHINA) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "UEFI WRDD is supported only for CN\n");
+		goto out;
+	}
+
+	mcc[0] = (data->mcc >> 8) & 0xff;
+	mcc[1] = data->mcc & 0xff;
+	mcc[2] = '\0';
+out:
+	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk)
+{
+	struct uefi_cnv_var_eckv *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable_guid(fwrt->trans,
+						   &IWL_EFI_WIFI_BT_GUID,
+						   IWL_UEFI_ECKV_NAME,
+						   "ECKV", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_ECKV_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI ECKV revision:%d\n",
+				data->revision);
+		goto out;
+	}
+	*extl_clk = data->ext_clock_valid;
+out:
+	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value)
+{
+	struct uefi_cnv_wlan_wbem_data *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WBEM_NAME,
+					      "WBEM", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_WBEM_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WBEM revision:%d\n",
+				data->revision);
+		goto out;
+	}
+	*value = data->wbem_320mhz_per_mcc & IWL_UEFI_WBEM_REV0_MASK;
+	IWL_DEBUG_RADIO(fwrt, "Loaded WBEM config from UEFI\n");
+out:
+	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;
+
+	BUILD_BUG_ON(ARRAY_SIZE(data->functions) < DSM_FUNC_NUM_FUNCS);
+
+	/* 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 (!(data->functions[DSM_FUNC_QUERY] & BIT(func))) {
+		IWL_DEBUG_RADIO(fwrt, "DSM func %d not in 0x%x\n",
+				func, data->functions[DSM_FUNC_QUERY]);
+		goto out;
+	}
+
+	*value = data->functions[func];
+
+	IWL_DEBUG_RADIO(fwrt,
+			"UEFI: DSM func=%d: value=%d\n", func, *value);
+
+	ret = 0;
+out:
+	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt)
+{
+	struct uefi_cnv_var_puncturing_data *data;
+	/* default value is not enabled if there is any issue in reading
+	 * uefi variable or revision is not supported
+	 */
+	int puncturing = 0;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans,
+					      IWL_UEFI_PUNCTURING_NAME,
+					      "UefiCnvWlanPuncturing",
+					      sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return puncturing;
+
+	if (data->revision != IWL_UEFI_PUNCTURING_REVISION) {
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI PUNCTURING rev:%d\n",
+				data->revision);
+	} else {
+		puncturing = data->puncturing & IWL_UEFI_PUNCTURING_REV0_MASK;
+		IWL_DEBUG_RADIO(fwrt, "Loaded puncturing bits from UEFI: %d\n",
+				puncturing);
+	}
+
+	kfree(data);
+	return puncturing;
+}
+IWL_EXPORT_SYMBOL(iwl_uefi_get_puncturing);
+
+int iwl_uefi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value)
+{
+	struct uefi_cnv_wlan_dsbr_data *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable_guid(fwrt->trans,
+						   &IWL_EFI_WIFI_BT_GUID,
+						   IWL_UEFI_DSBR_NAME, "DSBR",
+						   sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_DSBR_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI DSBR revision:%d\n",
+				data->revision);
+		goto out;
+	}
+	*value = data->config;
+	IWL_DEBUG_RADIO(fwrt, "Loaded DSBR config from UEFI value: 0x%x\n",
+			*value);
+out:
+	kfree(data);
+	return ret;
+}
+
+int iwl_uefi_get_phy_filters(struct iwl_fw_runtime *fwrt)
+{
+	struct uefi_cnv_wpfc_data *data __free(kfree);
+	struct iwl_phy_specific_cfg *filters = &fwrt->phy_filters;
+
+	data = iwl_uefi_get_verified_variable(fwrt->trans, IWL_UEFI_WPFC_NAME,
+					      "WPFC", sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != 0) {
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI WPFC revision:%d\n",
+			data->revision);
+		return -EINVAL;
+	}
+
+	BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) !=
+		     ARRAY_SIZE(data->chains));
+
+	for (int i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) {
+		filters->filter_cfg_chains[i] = cpu_to_le32(data->chains[i]);
+		IWL_DEBUG_RADIO(fwrt, "WPFC: chain %d: %u\n", i, data->chains[i]);
+	}
+
+	IWL_DEBUG_RADIO(fwrt, "Loaded WPFC config from UEFI\n");
+	return 0;
 }
-IWL_EXPORT_SYMBOL(iwl_uefi_get_sgom_table);
-#endif /* CONFIG_ACPI */