[linux-block.git] / include / linux / psci.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *
 * Copyright (C) 2015 ARM Limited
 */

#ifndef __LINUX_PSCI_H
#define __LINUX_PSCI_H

#include <linux/arm-smccc.h>
#include <linux/init.h>
#include <linux/types.h>

#define PSCI_POWER_STATE_TYPE_STANDBY		0
#define PSCI_POWER_STATE_TYPE_POWER_DOWN	1

bool psci_tos_resident_on(int cpu);

int psci_cpu_suspend_enter(u32 state);
bool psci_power_state_is_valid(u32 state);
int psci_set_osi_mode(bool enable);
bool psci_has_osi_support(void);

struct psci_operations {
	u32 (*get_version)(void);
	int (*cpu_suspend)(u32 state, unsigned long entry_point);
	int (*cpu_off)(u32 state);
	int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
	int (*migrate)(unsigned long cpuid);
	int (*affinity_info)(unsigned long target_affinity,
			unsigned long lowest_affinity_level);
	int (*migrate_info_type)(void);
};

extern struct psci_operations psci_ops;

struct psci_0_1_function_ids {
	u32 cpu_suspend;
	u32 cpu_on;
	u32 cpu_off;
	u32 migrate;
};

struct psci_0_1_function_ids get_psci_0_1_function_ids(void);

#if defined(CONFIG_ARM_PSCI_FW)
int __init psci_dt_init(void);
#else
static inline int psci_dt_init(void) { return 0; }
#endif

#if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
int __init psci_acpi_init(void);
bool __init acpi_psci_present(void);
bool acpi_psci_use_hvc(void);
#else
static inline int psci_acpi_init(void) { return 0; }
static inline bool acpi_psci_present(void) { return false; }
static inline bool acpi_psci_use_hvc(void) {return false; }
#endif

#endif /* __LINUX_PSCI_H */
Commit	Line	Data
1802d0be	1	/* SPDX-License-Identifier: GPL-2.0-only */
bff60792	2	/*
bff60792 MR	3	*
	4	* Copyright (C) 2015 ARM Limited
	5	*/
	6
	7	#ifndef __LINUX_PSCI_H
	8	#define __LINUX_PSCI_H
	9
a5520eac	10	#include <linux/arm-smccc.h>
bff60792 MR	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
9ffeb6d0 LP	19	int psci_cpu_suspend_enter(u32 state);
9ffeb6d0 LP	20	bool psci_power_state_is_valid(u32 state);
10942019	21	int psci_set_osi_mode(bool enable);
49fdcd75	22	bool psci_has_osi_support(void);
8b6f2499	23
bff60792	24	struct psci_operations {
d68e3ba5	25	u32 (*get_version)(void);
bff60792 MR	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
6df3e144 DB	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
bff60792 MR	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);
fa31ab77	55	bool acpi_psci_use_hvc(void);
bff60792 MR	56	#else
	57	static inline int psci_acpi_init(void) { return 0; }
	58	static inline bool acpi_psci_present(void) { return false; }
fa31ab77	59	static inline bool acpi_psci_use_hvc(void) {return false; }
bff60792 MR	60	#endif
	61
	62	#endif /* __LINUX_PSCI_H */