1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2021 Western Digital Corporation or its affiliates. 4 * Copyright (c) 2022 Ventana Micro Systems Inc. 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 functions */ 14 struct pt_regs regs; 15 /* Saved and restored by high-level functions */ 16 unsigned long scratch; 17 unsigned long tvec; 18 unsigned long ie; 19 #ifdef CONFIG_MMU 20 unsigned long satp; 21 #endif 22 }; 23 24 /* Low-level CPU suspend entry function */ 25 int __cpu_suspend_enter(struct suspend_context *context); 26 27 /* High-level CPU suspend which will save context and call finish() */ 28 int cpu_suspend(unsigned long arg, 29 int (*finish)(unsigned long arg, 30 unsigned long entry, 31 unsigned long context)); 32 33 /* Low-level CPU resume entry function */ 34 int __cpu_resume_enter(unsigned long hartid, unsigned long context); 35 36 #endif 37