1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __ASM_SUSPEND_H
3 #define __ASM_SUSPEND_H
4
5 #define NR_CTX_REGS 13
6 #define NR_CALLEE_SAVED_REGS 12
7
8 /*
9 * struct cpu_suspend_ctx must be 16-byte alig
10 * the stack, which must be 16-byte aligned on
11 */
12 struct cpu_suspend_ctx {
13 /*
14 * This struct must be kept in sync wi
15 * cpu_do_{suspend/resume} in mm/proc.
16 */
17 u64 ctx_regs[NR_CTX_REGS];
18 u64 sp;
19 } __aligned(16);
20
21 /*
22 * Memory to save the cpu state is allocated o
23 * __cpu_suspend_enter()'s caller, and populat
24 * This data must survive until cpu_resume() i
25 *
26 * This struct desribes the size and the layou
27 * The layout of the callee_saved_regs is defi
28 * of __cpu_suspend_enter(), and cpu_resume().
29 * in by the caller as __cpu_suspend_enter()'s
30 * returns, and the data would be subsequently
31 * finisher.
32 */
33 struct sleep_stack_data {
34 struct cpu_suspend_ctx system_regs;
35 unsigned long callee_saved_r
36 };
37
38 extern unsigned long *sleep_save_stash;
39
40 extern int cpu_suspend(unsigned long arg, int
41 extern void cpu_resume(void);
42 int __cpu_suspend_enter(struct sleep_stack_dat
43 void __cpu_suspend_exit(void);
44 void _cpu_resume(void);
45
46 int swsusp_arch_suspend(void);
47 int swsusp_arch_resume(void);
48 int arch_hibernation_header_save(void *addr, u
49 int arch_hibernation_header_restore(void *addr
50
51 /* Used to resume on the CPU we hibernated on
52 int hibernate_resume_nonboot_cpu_disable(void)
53
54 #endif
55
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