forked from mirrors/linux
6df3e14436
Make it possible to retrieve a copy of the psci_0_1_function_ids struct. This is useful for KVM if it is configured to intercept host's PSCI SMCs. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20201202184122.26046-7-dbrazdil@google.com
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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*
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* Copyright (C) 2015 ARM Limited
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*/
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#ifndef __LINUX_PSCI_H
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#define __LINUX_PSCI_H
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#include <linux/arm-smccc.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#define PSCI_POWER_STATE_TYPE_STANDBY 0
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#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
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bool psci_tos_resident_on(int cpu);
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int psci_cpu_suspend_enter(u32 state);
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bool psci_power_state_is_valid(u32 state);
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int psci_set_osi_mode(bool enable);
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bool psci_has_osi_support(void);
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struct psci_operations {
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u32 (*get_version)(void);
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int (*cpu_suspend)(u32 state, unsigned long entry_point);
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int (*cpu_off)(u32 state);
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int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
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int (*migrate)(unsigned long cpuid);
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int (*affinity_info)(unsigned long target_affinity,
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unsigned long lowest_affinity_level);
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int (*migrate_info_type)(void);
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};
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extern struct psci_operations psci_ops;
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struct psci_0_1_function_ids {
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u32 cpu_suspend;
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u32 cpu_on;
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u32 cpu_off;
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u32 migrate;
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};
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struct psci_0_1_function_ids get_psci_0_1_function_ids(void);
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#if defined(CONFIG_ARM_PSCI_FW)
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int __init psci_dt_init(void);
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#else
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static inline int psci_dt_init(void) { return 0; }
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#endif
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#if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
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int __init psci_acpi_init(void);
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bool __init acpi_psci_present(void);
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bool acpi_psci_use_hvc(void);
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#else
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static inline int psci_acpi_init(void) { return 0; }
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static inline bool acpi_psci_present(void) { return false; }
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static inline bool acpi_psci_use_hvc(void) {return false; }
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#endif
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#endif /* __LINUX_PSCI_H */
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