Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SUSPEND_H
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#define __ASM_SUSPEND_H
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#define NR_CTX_REGS 14
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#define NR_CALLEE_SAVED_REGS 12
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/*
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* struct cpu_suspend_ctx must be 16-byte aligned since it is allocated on
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* the stack, which must be 16-byte aligned on v8
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*/
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struct cpu_suspend_ctx {
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/*
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* This struct must be kept in sync with
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* cpu_do_{suspend/resume} in mm/proc.S
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*/
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u64 ctx_regs[NR_CTX_REGS];
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u64 sp;
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} __aligned(16);
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/*
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* Memory to save the cpu state is allocated on the stack by
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* __cpu_suspend_enter()'s caller, and populated by __cpu_suspend_enter().
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* This data must survive until cpu_resume() is called.
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*
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* This struct describes the size and the layout of the saved cpu state.
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* The layout of the callee_saved_regs is defined by the implementation
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* of __cpu_suspend_enter(), and cpu_resume(). This struct must be passed
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* in by the caller as __cpu_suspend_enter()'s stack-frame is gone once it
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* returns, and the data would be subsequently corrupted by the call to the
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* finisher.
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*/
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struct sleep_stack_data {
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struct cpu_suspend_ctx system_regs;
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unsigned long callee_saved_regs[NR_CALLEE_SAVED_REGS];
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};
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extern unsigned long *sleep_save_stash;
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extern int cpu_suspend(unsigned long arg, int (*fn)(unsigned long));
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extern void cpu_resume(void);
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int __cpu_suspend_enter(struct sleep_stack_data *state);
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void __cpu_suspend_exit(void);
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void _cpu_resume(void);
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int swsusp_arch_suspend(void);
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int swsusp_arch_resume(void);
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int arch_hibernation_header_save(void *addr, unsigned int max_size);
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int arch_hibernation_header_restore(void *addr);
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/* Used to resume on the CPU we hibernated on */
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int hibernate_resume_nonboot_cpu_disable(void);
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#endif
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