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bff60792 MR |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License version 2 as | |
4 | * published by the Free Software Foundation. | |
5 | * | |
6 | * This program is distributed in the hope that it will be useful, | |
7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | * GNU General Public License for more details. | |
10 | * | |
11 | * Copyright (C) 2015 ARM Limited | |
12 | */ | |
13 | ||
14 | #ifndef __LINUX_PSCI_H | |
15 | #define __LINUX_PSCI_H | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/types.h> | |
19 | ||
7a190318 PB |
20 | #define PSCI_CUSTOMIZED_INDEX (1 << 7) |
21 | #define PSCI_CLUSTER_SLEEP (PSCI_CUSTOMIZED_INDEX) | |
22 | #define PSCI_SYSTEM_IDLE (1 << 8) | |
23 | #define PSCI_CP_CALL (1 << 9) | |
24 | #define PSCI_SYSTEM_SLEEP (1 << 10) | |
beeca32d | 25 | |
bff60792 MR |
26 | #define PSCI_POWER_STATE_TYPE_STANDBY 0 |
27 | #define PSCI_POWER_STATE_TYPE_POWER_DOWN 1 | |
28 | ||
29 | bool psci_tos_resident_on(int cpu); | |
30 | ||
8b6f2499 LP |
31 | int psci_cpu_init_idle(unsigned int cpu); |
32 | int psci_cpu_suspend_enter(unsigned long index); | |
33 | ||
906a9f39 MZ |
34 | enum psci_conduit { |
35 | PSCI_CONDUIT_NONE, | |
36 | PSCI_CONDUIT_SMC, | |
37 | PSCI_CONDUIT_HVC, | |
38 | }; | |
39 | ||
908ad7a1 MZ |
40 | enum smccc_version { |
41 | SMCCC_VERSION_1_0, | |
42 | SMCCC_VERSION_1_1, | |
43 | }; | |
44 | ||
bff60792 | 45 | struct psci_operations { |
f91f1907 | 46 | u32 (*get_version)(void); |
bff60792 MR |
47 | int (*cpu_suspend)(u32 state, unsigned long entry_point); |
48 | int (*cpu_off)(u32 state); | |
49 | int (*cpu_on)(unsigned long cpuid, unsigned long entry_point); | |
50 | int (*migrate)(unsigned long cpuid); | |
51 | int (*affinity_info)(unsigned long target_affinity, | |
52 | unsigned long lowest_affinity_level); | |
53 | int (*migrate_info_type)(void); | |
906a9f39 | 54 | enum psci_conduit conduit; |
908ad7a1 | 55 | enum smccc_version smccc_version; |
bff60792 MR |
56 | }; |
57 | ||
58 | extern struct psci_operations psci_ops; | |
59 | ||
60 | #if defined(CONFIG_ARM_PSCI_FW) | |
61 | int __init psci_dt_init(void); | |
62 | #else | |
63 | static inline int psci_dt_init(void) { return 0; } | |
64 | #endif | |
65 | ||
66 | #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI) | |
67 | int __init psci_acpi_init(void); | |
68 | bool __init acpi_psci_present(void); | |
69 | bool __init acpi_psci_use_hvc(void); | |
70 | #else | |
71 | static inline int psci_acpi_init(void) { return 0; } | |
72 | static inline bool acpi_psci_present(void) { return false; } | |
73 | #endif | |
74 | ||
75 | #endif /* __LINUX_PSCI_H */ |