18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0+ */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * SVM helper functions 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright 2018 Anshuman Khandual, IBM Corporation. 68c2ecf20Sopenharmony_ci */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#ifndef _ASM_POWERPC_SVM_H 98c2ecf20Sopenharmony_ci#define _ASM_POWERPC_SVM_H 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci#ifdef CONFIG_PPC_SVM 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_cistatic inline bool is_secure_guest(void) 148c2ecf20Sopenharmony_ci{ 158c2ecf20Sopenharmony_ci return mfmsr() & MSR_S; 168c2ecf20Sopenharmony_ci} 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_civoid __init svm_swiotlb_init(void); 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_civoid dtl_cache_ctor(void *addr); 218c2ecf20Sopenharmony_ci#define get_dtl_cache_ctor() (is_secure_guest() ? dtl_cache_ctor : NULL) 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci#else /* CONFIG_PPC_SVM */ 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_cistatic inline bool is_secure_guest(void) 268c2ecf20Sopenharmony_ci{ 278c2ecf20Sopenharmony_ci return false; 288c2ecf20Sopenharmony_ci} 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_cistatic inline void svm_swiotlb_init(void) {} 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ci#define get_dtl_cache_ctor() NULL 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#endif /* CONFIG_PPC_SVM */ 358c2ecf20Sopenharmony_ci#endif /* _ASM_POWERPC_SVM_H */ 36