162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci// Copyright (C) 2017 Arm Ltd. 362306a36Sopenharmony_ci#ifndef __ASM_SDEI_H 462306a36Sopenharmony_ci#define __ASM_SDEI_H 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci/* Values for sdei_exit_mode */ 762306a36Sopenharmony_ci#define SDEI_EXIT_HVC 0 862306a36Sopenharmony_ci#define SDEI_EXIT_SMC 1 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#define SDEI_STACK_SIZE IRQ_STACK_SIZE 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#ifndef __ASSEMBLY__ 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci#include <linux/linkage.h> 1562306a36Sopenharmony_ci#include <linux/preempt.h> 1662306a36Sopenharmony_ci#include <linux/types.h> 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci#include <asm/virt.h> 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ciDECLARE_PER_CPU(struct sdei_registered_event *, sdei_active_normal_event); 2162306a36Sopenharmony_ciDECLARE_PER_CPU(struct sdei_registered_event *, sdei_active_critical_event); 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ciextern unsigned long sdei_exit_mode; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci/* Software Delegated Exception entry point from firmware*/ 2662306a36Sopenharmony_ciasmlinkage void __sdei_asm_handler(unsigned long event_num, unsigned long arg, 2762306a36Sopenharmony_ci unsigned long pc, unsigned long pstate); 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci/* and its CONFIG_UNMAP_KERNEL_AT_EL0 trampoline */ 3062306a36Sopenharmony_ciasmlinkage void __sdei_asm_entry_trampoline(unsigned long event_num, 3162306a36Sopenharmony_ci unsigned long arg, 3262306a36Sopenharmony_ci unsigned long pc, 3362306a36Sopenharmony_ci unsigned long pstate); 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci/* Abort a running handler. Context is discarded. */ 3662306a36Sopenharmony_civoid __sdei_handler_abort(void); 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci/* 3962306a36Sopenharmony_ci * The above entry point does the minimum to call C code. This function does 4062306a36Sopenharmony_ci * anything else, before calling the driver. 4162306a36Sopenharmony_ci */ 4262306a36Sopenharmony_cistruct sdei_registered_event; 4362306a36Sopenharmony_ciasmlinkage unsigned long __sdei_handler(struct pt_regs *regs, 4462306a36Sopenharmony_ci struct sdei_registered_event *arg); 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_ciunsigned long do_sdei_event(struct pt_regs *regs, 4762306a36Sopenharmony_ci struct sdei_registered_event *arg); 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ciunsigned long sdei_arch_get_entry_point(int conduit); 5062306a36Sopenharmony_ci#define sdei_arch_get_entry_point(x) sdei_arch_get_entry_point(x) 5162306a36Sopenharmony_ci 5262306a36Sopenharmony_ci#endif /* __ASSEMBLY__ */ 5362306a36Sopenharmony_ci#endif /* __ASM_SDEI_H */ 54