1 /* SPDX-License-Identifier: GPL-2.0-only */ 1
2 /*
3 * Copyright (c) 2021 Western Digital Corporat
4 * Copyright (c) 2022 Ventana Micro Systems In
5 */
6
7 #ifndef _ASM_RISCV_SUSPEND_H
8 #define _ASM_RISCV_SUSPEND_H
9
10 #include <asm/ptrace.h>
11
12 struct suspend_context {
13 /* Saved and restored by low-level fun
14 struct pt_regs regs;
15 /* Saved and restored by high-level fu
16 unsigned long envcfg;
17 unsigned long tvec;
18 unsigned long ie;
19 #ifdef CONFIG_MMU
20 unsigned long satp;
21 #endif
22 };
23
24 /*
25 * Used by hibernation core and cleared during
26 */
27 extern int in_suspend;
28
29 /* Low-level CPU suspend entry function */
30 int __cpu_suspend_enter(struct suspend_context
31
32 /* High-level CPU suspend which will save cont
33 int cpu_suspend(unsigned long arg,
34 int (*finish)(unsigned long ar
35 unsigned long en
36 unsigned long co
37
38 /* Low-level CPU resume entry function */
39 int __cpu_resume_enter(unsigned long hartid, u
40
41 /* Used to save and restore the CSRs */
42 void suspend_save_csrs(struct suspend_context
43 void suspend_restore_csrs(struct suspend_conte
44
45 /* Low-level API to support hibernation */
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 int __hibernate_cpu_resume(void);
51
52 /* Used to resume on the CPU we hibernated on
53 int hibernate_resume_nonboot_cpu_disable(void)
54
55 asmlinkage void hibernate_restore_image(unsign
56 unsign
57 asmlinkage int hibernate_core_restore_code(voi
58 bool riscv_sbi_hsm_is_supported(void);
59 bool riscv_sbi_suspend_state_is_valid(u32 stat
60 int riscv_sbi_hart_suspend(u32 state);
61 #endif
62
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