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1 | /* |
2 | * ARM Power State and Coordination Interface (PSCI) header | |
3 | * | |
4 | * This header holds common PSCI defines and macros shared | |
5 | * by: ARM kernel, ARM64 kernel, KVM ARM/ARM64 and user space. | |
6 | * | |
7 | * Copyright (C) 2014 Linaro Ltd. | |
8 | * Author: Anup Patel <anup.patel@linaro.org> | |
9 | */ | |
10 | ||
11 | #ifndef _UAPI_LINUX_PSCI_H | |
12 | #define _UAPI_LINUX_PSCI_H | |
13 | ||
14 | /* | |
15 | * PSCI v0.1 interface | |
16 | * | |
17 | * The PSCI v0.1 function numbers are implementation defined. | |
18 | * | |
19 | * Only PSCI return values such as: SUCCESS, NOT_SUPPORTED, | |
20 | * INVALID_PARAMS, and DENIED defined below are applicable | |
21 | * to PSCI v0.1. | |
22 | */ | |
23 | ||
24 | /* PSCI v0.2 interface */ | |
25 | #define PSCI_0_2_FN_BASE 0x84000000 | |
26 | #define PSCI_0_2_FN(n) (PSCI_0_2_FN_BASE + (n)) | |
27 | #define PSCI_0_2_64BIT 0x40000000 | |
28 | #define PSCI_0_2_FN64_BASE \ | |
29 | (PSCI_0_2_FN_BASE + PSCI_0_2_64BIT) | |
30 | #define PSCI_0_2_FN64(n) (PSCI_0_2_FN64_BASE + (n)) | |
31 | ||
32 | #define PSCI_0_2_FN_PSCI_VERSION PSCI_0_2_FN(0) | |
33 | #define PSCI_0_2_FN_CPU_SUSPEND PSCI_0_2_FN(1) | |
34 | #define PSCI_0_2_FN_CPU_OFF PSCI_0_2_FN(2) | |
35 | #define PSCI_0_2_FN_CPU_ON PSCI_0_2_FN(3) | |
36 | #define PSCI_0_2_FN_AFFINITY_INFO PSCI_0_2_FN(4) | |
37 | #define PSCI_0_2_FN_MIGRATE PSCI_0_2_FN(5) | |
38 | #define PSCI_0_2_FN_MIGRATE_INFO_TYPE PSCI_0_2_FN(6) | |
39 | #define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7) | |
40 | #define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8) | |
41 | #define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9) | |
42 | ||
43 | #define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1) | |
44 | #define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3) | |
45 | #define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4) | |
46 | #define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5) | |
47 | #define PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU PSCI_0_2_FN64(7) | |
48 | ||
49 | /* PSCI v0.2 power state encoding for CPU_SUSPEND function */ | |
50 | #define PSCI_0_2_POWER_STATE_ID_MASK 0xffff | |
51 | #define PSCI_0_2_POWER_STATE_ID_SHIFT 0 | |
52 | #define PSCI_0_2_POWER_STATE_TYPE_SHIFT 16 | |
53 | #define PSCI_0_2_POWER_STATE_TYPE_MASK \ | |
54 | (0x1 << PSCI_0_2_POWER_STATE_TYPE_SHIFT) | |
55 | #define PSCI_0_2_POWER_STATE_AFFL_SHIFT 24 | |
56 | #define PSCI_0_2_POWER_STATE_AFFL_MASK \ | |
57 | (0x3 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) | |
58 | ||
59 | /* PSCI v0.2 affinity level state returned by AFFINITY_INFO */ | |
60 | #define PSCI_0_2_AFFINITY_LEVEL_ON 0 | |
61 | #define PSCI_0_2_AFFINITY_LEVEL_OFF 1 | |
62 | #define PSCI_0_2_AFFINITY_LEVEL_ON_PENDING 2 | |
63 | ||
64 | /* PSCI v0.2 multicore support in Trusted OS returned by MIGRATE_INFO_TYPE */ | |
65 | #define PSCI_0_2_TOS_UP_MIGRATE 0 | |
66 | #define PSCI_0_2_TOS_UP_NO_MIGRATE 1 | |
67 | #define PSCI_0_2_TOS_MP 2 | |
68 | ||
69 | /* PSCI version decoding (independent of PSCI version) */ | |
70 | #define PSCI_VERSION_MAJOR_SHIFT 16 | |
71 | #define PSCI_VERSION_MINOR_MASK \ | |
72 | ((1U << PSCI_VERSION_MAJOR_SHIFT) - 1) | |
73 | #define PSCI_VERSION_MAJOR_MASK ~PSCI_VERSION_MINOR_MASK | |
74 | #define PSCI_VERSION_MAJOR(ver) \ | |
75 | (((ver) & PSCI_VERSION_MAJOR_MASK) >> PSCI_VERSION_MAJOR_SHIFT) | |
76 | #define PSCI_VERSION_MINOR(ver) \ | |
77 | ((ver) & PSCI_VERSION_MINOR_MASK) | |
78 | ||
79 | /* PSCI return values (inclusive of all PSCI versions) */ | |
80 | #define PSCI_RET_SUCCESS 0 | |
81 | #define PSCI_RET_NOT_SUPPORTED -1 | |
82 | #define PSCI_RET_INVALID_PARAMS -2 | |
83 | #define PSCI_RET_DENIED -3 | |
84 | #define PSCI_RET_ALREADY_ON -4 | |
85 | #define PSCI_RET_ON_PENDING -5 | |
86 | #define PSCI_RET_INTERNAL_FAILURE -6 | |
87 | #define PSCI_RET_NOT_PRESENT -7 | |
88 | #define PSCI_RET_DISABLED -8 | |
89 | ||
90 | #endif /* _UAPI_LINUX_PSCI_H */ |