xref: /OK3568_Linux_fs/kernel/arch/powerpc/include/asm/mem_encrypt.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * SVM helper functions
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * Copyright 2018 IBM Corporation
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #ifndef _ASM_POWERPC_MEM_ENCRYPT_H
9*4882a593Smuzhiyun #define _ASM_POWERPC_MEM_ENCRYPT_H
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun #include <asm/svm.h>
12*4882a593Smuzhiyun 
mem_encrypt_active(void)13*4882a593Smuzhiyun static inline bool mem_encrypt_active(void)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun 	return is_secure_guest();
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun 
force_dma_unencrypted(struct device * dev)18*4882a593Smuzhiyun static inline bool force_dma_unencrypted(struct device *dev)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun 	return is_secure_guest();
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun int set_memory_encrypted(unsigned long addr, int numpages);
24*4882a593Smuzhiyun int set_memory_decrypted(unsigned long addr, int numpages);
25*4882a593Smuzhiyun 
26*4882a593Smuzhiyun #endif /* _ASM_POWERPC_MEM_ENCRYPT_H */
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