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 | |