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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 | ||
20 | #define PSCI_POWER_STATE_TYPE_STANDBY 0 | |
21 | #define PSCI_POWER_STATE_TYPE_POWER_DOWN 1 | |
22 | ||
23 | bool psci_tos_resident_on(int cpu); | |
24 | ||
8b6f2499 LP |
25 | int psci_cpu_init_idle(unsigned int cpu); |
26 | int psci_cpu_suspend_enter(unsigned long index); | |
27 | ||
aee72762 MZ |
28 | enum psci_conduit { |
29 | PSCI_CONDUIT_NONE, | |
30 | PSCI_CONDUIT_SMC, | |
31 | PSCI_CONDUIT_HVC, | |
32 | }; | |
33 | ||
58e86635 MZ |
34 | enum smccc_version { |
35 | SMCCC_VERSION_1_0, | |
36 | SMCCC_VERSION_1_1, | |
37 | }; | |
38 | ||
bff60792 | 39 | struct psci_operations { |
88455381 | 40 | u32 (*get_version)(void); |
bff60792 MR |
41 | int (*cpu_suspend)(u32 state, unsigned long entry_point); |
42 | int (*cpu_off)(u32 state); | |
43 | int (*cpu_on)(unsigned long cpuid, unsigned long entry_point); | |
44 | int (*migrate)(unsigned long cpuid); | |
45 | int (*affinity_info)(unsigned long target_affinity, | |
46 | unsigned long lowest_affinity_level); | |
47 | int (*migrate_info_type)(void); | |
aee72762 | 48 | enum psci_conduit conduit; |
58e86635 | 49 | enum smccc_version smccc_version; |
bff60792 MR |
50 | }; |
51 | ||
52 | extern struct psci_operations psci_ops; | |
53 | ||
54 | #if defined(CONFIG_ARM_PSCI_FW) | |
55 | int __init psci_dt_init(void); | |
56 | #else | |
57 | static inline int psci_dt_init(void) { return 0; } | |
58 | #endif | |
59 | ||
60 | #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI) | |
61 | int __init psci_acpi_init(void); | |
62 | bool __init acpi_psci_present(void); | |
362c36a5 | 63 | bool acpi_psci_use_hvc(void); |
bff60792 MR |
64 | #else |
65 | static inline int psci_acpi_init(void) { return 0; } | |
66 | static inline bool acpi_psci_present(void) { return false; } | |
362c36a5 | 67 | static inline bool acpi_psci_use_hvc(void) {return false; } |
bff60792 MR |
68 | #endif |
69 | ||
70 | #endif /* __LINUX_PSCI_H */ |