Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright (C) 2015 ARM Limited
5 */
6
7#ifndef __LINUX_PSCI_H
8#define __LINUX_PSCI_H
9
10#include <linux/arm-smccc.h>
11#include <linux/init.h>
12#include <linux/types.h>
13
14#define PSCI_POWER_STATE_TYPE_STANDBY 0
15#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
16
17bool psci_tos_resident_on(int cpu);
18
19int psci_cpu_suspend_enter(u32 state);
20bool psci_power_state_is_valid(u32 state);
21int psci_set_osi_mode(void);
22bool psci_has_osi_support(void);
23
24enum smccc_version {
25 SMCCC_VERSION_1_0,
26 SMCCC_VERSION_1_1,
27};
28
29struct psci_operations {
30 u32 (*get_version)(void);
31 int (*cpu_suspend)(u32 state, unsigned long entry_point);
32 int (*cpu_off)(u32 state);
33 int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
34 int (*migrate)(unsigned long cpuid);
35 int (*affinity_info)(unsigned long target_affinity,
36 unsigned long lowest_affinity_level);
37 int (*migrate_info_type)(void);
38 enum arm_smccc_conduit conduit;
39 enum smccc_version smccc_version;
40};
41
42extern struct psci_operations psci_ops;
43
44#if defined(CONFIG_ARM_PSCI_FW)
45int __init psci_dt_init(void);
46#else
47static inline int psci_dt_init(void) { return 0; }
48#endif
49
50#if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
51int __init psci_acpi_init(void);
52bool __init acpi_psci_present(void);
53bool acpi_psci_use_hvc(void);
54#else
55static inline int psci_acpi_init(void) { return 0; }
56static inline bool acpi_psci_present(void) { return false; }
57static inline bool acpi_psci_use_hvc(void) {return false; }
58#endif
59
60#endif /* __LINUX_PSCI_H */