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✏️ psci.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * ARM Power State and Coordination Interface (PSCI) header * * This header holds common PSCI defines and macros shared * by: ARM kernel, ARM64 kernel, KVM ARM/ARM64 and user space. * * Copyright (C) 2014 Linaro Ltd. * Author: Anup Patel <anup.patel@linaro.org> */ #ifndef _LINUX_PSCI_H #define _LINUX_PSCI_H /* * PSCI v0.1 interface * * The PSCI v0.1 function numbers are implementation defined. * * Only PSCI return values such as: SUCCESS, NOT_SUPPORTED, * INVALID_PARAMS, and DENIED defined below are applicable * to PSCI v0.1. */ /* PSCI v0.2 interface */ #define PSCI_0_2_FN_BASE 0x84000000 #define PSCI_0_2_FN(n) (PSCI_0_2_FN_BASE + (n)) #define PSCI_0_2_64BIT 0x40000000 #define PSCI_0_2_FN64_BASE \ (PSCI_0_2_FN_BASE + PSCI_0_2_64BIT) #define PSCI_0_2_FN64(n) (PSCI_0_2_FN64_BASE + (n)) #define PSCI_0_2_FN_PSCI_VERSION PSCI_0_2_FN(0) #define PSCI_0_2_FN_CPU_SUSPEND PSCI_0_2_FN(1) #define PSCI_0_2_FN_CPU_OFF PSCI_0_2_FN(2) #define PSCI_0_2_FN_CPU_ON PSCI_0_2_FN(3) #define PSCI_0_2_FN_AFFINITY_INFO PSCI_0_2_FN(4) #define PSCI_0_2_FN_MIGRATE PSCI_0_2_FN(5) #define PSCI_0_2_FN_MIGRATE_INFO_TYPE PSCI_0_2_FN(6) #define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7) #define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8) #define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9) #define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1) #define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3) #define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4) #define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5) #define PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU PSCI_0_2_FN64(7) #define PSCI_1_0_FN_PSCI_FEATURES PSCI_0_2_FN(10) #define PSCI_1_0_FN_SYSTEM_SUSPEND PSCI_0_2_FN(14) #define PSCI_1_0_FN_SET_SUSPEND_MODE PSCI_0_2_FN(15) #define PSCI_1_1_FN_SYSTEM_RESET2 PSCI_0_2_FN(18) #define PSCI_1_0_FN64_SYSTEM_SUSPEND PSCI_0_2_FN64(14) #define PSCI_1_1_FN64_SYSTEM_RESET2 PSCI_0_2_FN64(18) /* PSCI v0.2 power state encoding for CPU_SUSPEND function */ #define PSCI_0_2_POWER_STATE_ID_MASK 0xffff #define PSCI_0_2_POWER_STATE_ID_SHIFT 0 #define PSCI_0_2_POWER_STATE_TYPE_SHIFT 16 #define PSCI_0_2_POWER_STATE_TYPE_MASK \ (0x1 << PSCI_0_2_POWER_STATE_TYPE_SHIFT) #define PSCI_0_2_POWER_STATE_AFFL_SHIFT 24 #define PSCI_0_2_POWER_STATE_AFFL_MASK \ (0x3 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) /* PSCI extended power state encoding for CPU_SUSPEND function */ #define PSCI_1_0_EXT_POWER_STATE_ID_MASK 0xfffffff #define PSCI_1_0_EXT_POWER_STATE_ID_SHIFT 0 #define PSCI_1_0_EXT_POWER_STATE_TYPE_SHIFT 30 #define PSCI_1_0_EXT_POWER_STATE_TYPE_MASK \ (0x1 << PSCI_1_0_EXT_POWER_STATE_TYPE_SHIFT) /* PSCI v0.2 affinity level state returned by AFFINITY_INFO */ #define PSCI_0_2_AFFINITY_LEVEL_ON 0 #define PSCI_0_2_AFFINITY_LEVEL_OFF 1 #define PSCI_0_2_AFFINITY_LEVEL_ON_PENDING 2 /* PSCI v0.2 multicore support in Trusted OS returned by MIGRATE_INFO_TYPE */ #define PSCI_0_2_TOS_UP_MIGRATE 0 #define PSCI_0_2_TOS_UP_NO_MIGRATE 1 #define PSCI_0_2_TOS_MP 2 /* PSCI version decoding (independent of PSCI version) */ #define PSCI_VERSION_MAJOR_SHIFT 16 #define PSCI_VERSION_MINOR_MASK \ ((1U << PSCI_VERSION_MAJOR_SHIFT) - 1) #define PSCI_VERSION_MAJOR_MASK ~PSCI_VERSION_MINOR_MASK #define PSCI_VERSION_MAJOR(ver) \ (((ver) & PSCI_VERSION_MAJOR_MASK) >> PSCI_VERSION_MAJOR_SHIFT) #define PSCI_VERSION_MINOR(ver) \ ((ver) & PSCI_VERSION_MINOR_MASK) #define PSCI_VERSION(maj, min) \ ((((maj) << PSCI_VERSION_MAJOR_SHIFT) & PSCI_VERSION_MAJOR_MASK) | \ ((min) & PSCI_VERSION_MINOR_MASK)) /* PSCI features decoding (>=1.0) */ #define PSCI_1_0_FEATURES_CPU_SUSPEND_PF_SHIFT 1 #define PSCI_1_0_FEATURES_CPU_SUSPEND_PF_MASK \ (0x1 << PSCI_1_0_FEATURES_CPU_SUSPEND_PF_SHIFT) #define PSCI_1_0_OS_INITIATED BIT(0) #define PSCI_1_0_SUSPEND_MODE_PC 0 #define PSCI_1_0_SUSPEND_MODE_OSI 1 /* PSCI return values (inclusive of all PSCI versions) */ #define PSCI_RET_SUCCESS 0 #define PSCI_RET_NOT_SUPPORTED -1 #define PSCI_RET_INVALID_PARAMS -2 #define PSCI_RET_DENIED -3 #define PSCI_RET_ALREADY_ON -4 #define PSCI_RET_ON_PENDING -5 #define PSCI_RET_INTERNAL_FAILURE -6 #define PSCI_RET_NOT_PRESENT -7 #define PSCI_RET_DISABLED -8 #define PSCI_RET_INVALID_ADDRESS -9 #endif /* _LINUX_PSCI_H */
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