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 | |
17 | bool psci_tos_resident_on(int cpu); |
18 | |
19 | int psci_cpu_suspend_enter(u32 state); |
20 | bool psci_power_state_is_valid(u32 state); |
21 | int psci_set_osi_mode(bool enable); |
22 | bool psci_has_osi_support(void); |
23 | |
24 | struct psci_operations { |
25 | u32 (*get_version)(void); |
26 | int (*cpu_suspend)(u32 state, unsigned long entry_point); |
27 | int (*cpu_off)(u32 state); |
28 | int (*cpu_on)(unsigned long cpuid, unsigned long entry_point); |
29 | int (*migrate)(unsigned long cpuid); |
30 | int (*affinity_info)(unsigned long target_affinity, |
31 | unsigned long lowest_affinity_level); |
32 | int (*migrate_info_type)(void); |
33 | }; |
34 | |
35 | extern struct psci_operations psci_ops; |
36 | |
37 | struct psci_0_1_function_ids { |
38 | u32 cpu_suspend; |
39 | u32 cpu_on; |
40 | u32 cpu_off; |
41 | u32 migrate; |
42 | }; |
43 | |
44 | struct psci_0_1_function_ids get_psci_0_1_function_ids(void); |
45 | |
46 | #if defined(CONFIG_ARM_PSCI_FW) |
47 | int __init psci_dt_init(void); |
48 | #else |
49 | static inline int psci_dt_init(void) { return 0; } |
50 | #endif |
51 | |
52 | #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI) |
53 | int __init psci_acpi_init(void); |
54 | bool __init acpi_psci_present(void); |
55 | bool acpi_psci_use_hvc(void); |
56 | #else |
57 | static inline int psci_acpi_init(void) { return 0; } |
58 | static inline bool acpi_psci_present(void) { return false; } |
59 | static inline bool acpi_psci_use_hvc(void) {return false; } |
60 | #endif |
61 | |
62 | #endif /* __LINUX_PSCI_H */ |
63 | |