diff options
Diffstat (limited to 'include/linux/mem_encrypt.h')
| -rw-r--r-- | include/linux/mem_encrypt.h | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/include/linux/mem_encrypt.h b/include/linux/mem_encrypt.h index 5c4a18a91f89..07584c5e36fb 100644 --- a/include/linux/mem_encrypt.h +++ b/include/linux/mem_encrypt.h @@ -16,10 +16,6 @@ #include <asm/mem_encrypt.h> -#else /* !CONFIG_ARCH_HAS_MEM_ENCRYPT */ - -static inline bool mem_encrypt_active(void) { return false; } - #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ #ifdef CONFIG_AMD_MEM_ENCRYPT @@ -30,11 +26,34 @@ static inline bool mem_encrypt_active(void) { return false; } */ #define __sme_set(x) ((x) | sme_me_mask) #define __sme_clr(x) ((x) & ~sme_me_mask) + +#define dma_addr_encrypted(x) __sme_set(x) +#define dma_addr_canonical(x) __sme_clr(x) + #else #define __sme_set(x) (x) #define __sme_clr(x) (x) #endif +/* + * dma_addr_encrypted() and dma_addr_unencrypted() are for converting a given DMA + * address to the respective type of addressing. + * + * dma_addr_canonical() is used to reverse any conversions for encrypted/decrypted + * back to the canonical address. + */ +#ifndef dma_addr_encrypted +#define dma_addr_encrypted(x) (x) +#endif + +#ifndef dma_addr_unencrypted +#define dma_addr_unencrypted(x) (x) +#endif + +#ifndef dma_addr_canonical +#define dma_addr_canonical(x) (x) +#endif + #endif /* __ASSEMBLY__ */ #endif /* __MEM_ENCRYPT_H__ */ |