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 _LINUX_PSCI_H 12 #define _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 /* _LINUX_PSCI_H */ 91