1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 2 /* 3 * AMD Memory Encryption Support 3 * AMD Memory Encryption Support 4 * 4 * 5 * Copyright (C) 2016 Advanced Micro Devices, 5 * Copyright (C) 2016 Advanced Micro Devices, Inc. 6 * 6 * 7 * Author: Tom Lendacky <thomas.lendacky@amd.c 7 * Author: Tom Lendacky <thomas.lendacky@amd.com> 8 */ 8 */ 9 9 10 #ifndef __MEM_ENCRYPT_H__ 10 #ifndef __MEM_ENCRYPT_H__ 11 #define __MEM_ENCRYPT_H__ 11 #define __MEM_ENCRYPT_H__ 12 12 13 #ifndef __ASSEMBLY__ 13 #ifndef __ASSEMBLY__ 14 14 15 #ifdef CONFIG_ARCH_HAS_MEM_ENCRYPT 15 #ifdef CONFIG_ARCH_HAS_MEM_ENCRYPT 16 16 17 #include <asm/mem_encrypt.h> 17 #include <asm/mem_encrypt.h> 18 18 19 #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ 19 #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ 20 20 21 #ifdef CONFIG_AMD_MEM_ENCRYPT 21 #ifdef CONFIG_AMD_MEM_ENCRYPT 22 /* 22 /* 23 * The __sme_set() and __sme_clr() macros are 23 * The __sme_set() and __sme_clr() macros are useful for adding or removing 24 * the encryption mask from a value (e.g. when 24 * the encryption mask from a value (e.g. when dealing with pagetable 25 * entries). 25 * entries). 26 */ 26 */ 27 #define __sme_set(x) ((x) | sme_me_ 27 #define __sme_set(x) ((x) | sme_me_mask) 28 #define __sme_clr(x) ((x) & ~sme_me 28 #define __sme_clr(x) ((x) & ~sme_me_mask) 29 #else 29 #else 30 #define __sme_set(x) (x) 30 #define __sme_set(x) (x) 31 #define __sme_clr(x) (x) 31 #define __sme_clr(x) (x) 32 #endif 32 #endif 33 33 34 #endif /* __ASSEMBLY__ */ 34 #endif /* __ASSEMBLY__ */ 35 35 36 #endif /* __MEM_ENCRYPT_H__ */ 36 #endif /* __MEM_ENCRYPT_H__ */ 37 37
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