1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
6 #include "iwl-drv.h"
8 #include "iwl-prph.h"
9 #include "iwl-io.h"
22 	void *data;  in iwl_uefi_get_pnvm()  local
30 		return ERR_PTR(-ENOMEM);  in iwl_uefi_get_pnvm()
32 	memcpy(&pnvm_efivar->var.VariableName, IWL_UEFI_OEM_PNVM_NAME,  in iwl_uefi_get_pnvm()
34 	pnvm_efivar->var.VendorGuid = IWL_EFI_VAR_GUID;  in iwl_uefi_get_pnvm()
43 	data = kmalloc(package_size, GFP_KERNEL);  in iwl_uefi_get_pnvm()
44 	if (!data) {  in iwl_uefi_get_pnvm()
45 		data = ERR_PTR(-ENOMEM);  in iwl_uefi_get_pnvm()
46 		goto out;  in iwl_uefi_get_pnvm()
49 	err = efivar_entry_get(pnvm_efivar, NULL, &package_size, data);  in iwl_uefi_get_pnvm()
54 		kfree(data);  in iwl_uefi_get_pnvm()
55 		data = ERR_PTR(err);  in iwl_uefi_get_pnvm()
56 		goto out;  in iwl_uefi_get_pnvm()
62 out:  in iwl_uefi_get_pnvm()
65 	return data;  in iwl_uefi_get_pnvm()
69 					   const u8 *data, size_t len)  in iwl_uefi_reduce_power_section()  argument
80 		len -= sizeof(*tlv);  in iwl_uefi_reduce_power_section()
81 		tlv = (void *)data;  in iwl_uefi_reduce_power_section()
83 		tlv_len = le32_to_cpu(tlv->length);  in iwl_uefi_reduce_power_section()
84 		tlv_type = le32_to_cpu(tlv->type);  in iwl_uefi_reduce_power_section()
89 			reduce_power_data = ERR_PTR(-EINVAL);  in iwl_uefi_reduce_power_section()
90 			goto out;  in iwl_uefi_reduce_power_section()
93 		data += sizeof(*tlv);  in iwl_uefi_reduce_power_section()
101 			IWL_DEBUG_FW(trans, "Adding data (size %d)\n", tlv_len);  in iwl_uefi_reduce_power_section()
108 				reduce_power_data = ERR_PTR(-ENOMEM);  in iwl_uefi_reduce_power_section()
109 				goto out;  in iwl_uefi_reduce_power_section()
114 			memcpy(reduce_power_data + size, data, tlv_len);  in iwl_uefi_reduce_power_section()
130 		len -= ALIGN(tlv_len, 4);  in iwl_uefi_reduce_power_section()
131 		data += ALIGN(tlv_len, 4);  in iwl_uefi_reduce_power_section()
137 		reduce_power_data = ERR_PTR(-ENOENT);  in iwl_uefi_reduce_power_section()
138 		goto out;  in iwl_uefi_reduce_power_section()
143 out:  in iwl_uefi_reduce_power_section()
148 					 const u8 *data, size_t len)  in iwl_uefi_reduce_power_parse()  argument
153 	IWL_DEBUG_FW(trans, "Parsing REDUCE_POWER data\n");  in iwl_uefi_reduce_power_parse()
158 		len -= sizeof(*tlv);  in iwl_uefi_reduce_power_parse()
159 		tlv = (void *)data;  in iwl_uefi_reduce_power_parse()
161 		tlv_len = le32_to_cpu(tlv->length);  in iwl_uefi_reduce_power_parse()
162 		tlv_type = le32_to_cpu(tlv->type);  in iwl_uefi_reduce_power_parse()
167 			return ERR_PTR(-EINVAL);  in iwl_uefi_reduce_power_parse()
172 				(void *)(data + sizeof(*tlv));  in iwl_uefi_reduce_power_parse()
178 				     le32_to_cpu(sku_id->data[0]),  in iwl_uefi_reduce_power_parse()
179 				     le32_to_cpu(sku_id->data[1]),  in iwl_uefi_reduce_power_parse()
180 				     le32_to_cpu(sku_id->data[2]));  in iwl_uefi_reduce_power_parse()
182 			data += sizeof(*tlv) + ALIGN(tlv_len, 4);  in iwl_uefi_reduce_power_parse()
183 			len -= ALIGN(tlv_len, 4);  in iwl_uefi_reduce_power_parse()
185 			if (trans->sku_id[0] == le32_to_cpu(sku_id->data[0]) &&  in iwl_uefi_reduce_power_parse()
186 			    trans->sku_id[1] == le32_to_cpu(sku_id->data[1]) &&  in iwl_uefi_reduce_power_parse()
187 			    trans->sku_id[2] == le32_to_cpu(sku_id->data[2])) {  in iwl_uefi_reduce_power_parse()
189 									 data,  in iwl_uefi_reduce_power_parse()
197 			data += sizeof(*tlv) + ALIGN(tlv_len, 4);  in iwl_uefi_reduce_power_parse()
198 			len -= ALIGN(tlv_len, 4);  in iwl_uefi_reduce_power_parse()
202 	return ERR_PTR(-ENOENT);  in iwl_uefi_reduce_power_parse()
209 	void *data = NULL;  in iwl_uefi_get_reduced_power()  local
217 		return ERR_PTR(-ENOMEM);  in iwl_uefi_get_reduced_power()
219 	memcpy(&reduce_power_efivar->var.VariableName, IWL_UEFI_REDUCED_POWER_NAME,  in iwl_uefi_get_reduced_power()
221 	reduce_power_efivar->var.VendorGuid = IWL_EFI_VAR_GUID;  in iwl_uefi_get_reduced_power()
232 		package = ERR_PTR(-ENOMEM);  in iwl_uefi_get_reduced_power()
233 		goto out;  in iwl_uefi_get_reduced_power()
242 		data = ERR_PTR(err);  in iwl_uefi_get_reduced_power()
243 		goto out;  in iwl_uefi_get_reduced_power()
251 		     package->rev, package->total_size, package->n_skus);  in iwl_uefi_get_reduced_power()
253 	data = iwl_uefi_reduce_power_parse(trans, package->data,  in iwl_uefi_get_reduced_power()
254 					   *len - sizeof(*package));  in iwl_uefi_get_reduced_power()
258 out:  in iwl_uefi_get_reduced_power()
261 	return data;  in iwl_uefi_get_reduced_power()