1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * POWER Dynamic Execution Control Facility (DEXCR) 4 * 5 * This header file contains helper functions and macros 6 * required for all the DEXCR related test cases. 7 */ 8 #ifndef _SELFTESTS_POWERPC_DEXCR_DEXCR_H 9 #define _SELFTESTS_POWERPC_DEXCR_DEXCR_H 10 11 #include <stdbool.h> 12 #include <sys/types.h> 13 14 #include "reg.h" 15 16 #define DEXCR_PR_BIT(aspect) __MASK(63 - (32 + (aspect))) 17 #define DEXCR_PR_SBHE DEXCR_PR_BIT(0) 18 #define DEXCR_PR_IBRTPD DEXCR_PR_BIT(3) 19 #define DEXCR_PR_SRAPD DEXCR_PR_BIT(4) 20 #define DEXCR_PR_NPHIE DEXCR_PR_BIT(5) 21 22 #define PPC_RAW_HASH_ARGS(b, i, a) \ 23 ((((i) >> 3) & 0x1F) << 21 | (a) << 16 | (b) << 11 | (((i) >> 8) & 0x1)) 24 #define PPC_RAW_HASHST(b, i, a) \ 25 str(.long (0x7C0005A4 | PPC_RAW_HASH_ARGS(b, i, a));) 26 #define PPC_RAW_HASHCHK(b, i, a) \ 27 str(.long (0x7C0005E4 | PPC_RAW_HASH_ARGS(b, i, a));) 28 29 bool dexcr_exists(void); 30 31 bool hashchk_triggers(void); 32 33 enum dexcr_source { 34 DEXCR, /* Userspace DEXCR value */ 35 HDEXCR, /* Hypervisor enforced DEXCR value */ 36 EFFECTIVE, /* Bitwise OR of UDEXCR and ENFORCED DEXCR bits */ 37 }; 38 39 unsigned int get_dexcr(enum dexcr_source source); 40 41 void await_child_success(pid_t pid); 42 43 void hashst(unsigned long lr, void *sp); 44 45 void hashchk(unsigned long lr, void *sp); 46 47 void do_bad_hashchk(void); 48 49 #endif /* _SELFTESTS_POWERPC_DEXCR_DEXCR_H */ 50