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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2017 Arm Ltd.
#ifndef __ASM_SDEI_H
#define __ASM_SDEI_H
/* Values for sdei_exit_mode */
#define SDEI_EXIT_HVC 0
#define SDEI_EXIT_SMC 1
#define SDEI_STACK_SIZE IRQ_STACK_SIZE
#ifndef __ASSEMBLY__
#include <linux/linkage.h>
#include <linux/preempt.h>
#include <linux/types.h>
#include <asm/virt.h>
extern unsigned long sdei_exit_mode;
/* Software Delegated Exception entry point from firmware*/
asmlinkage void __sdei_asm_handler(unsigned long event_num, unsigned long arg,
unsigned long pc, unsigned long pstate);
/* and its CONFIG_UNMAP_KERNEL_AT_EL0 trampoline */
asmlinkage void __sdei_asm_entry_trampoline(unsigned long event_num,
unsigned long arg,
unsigned long pc,
unsigned long pstate);
/*
* The above entry point does the minimum to call C code. This function does
* anything else, before calling the driver.
*/
struct sdei_registered_event;
asmlinkage unsigned long __sdei_handler(struct pt_regs *regs,
struct sdei_registered_event *arg);
unsigned long sdei_arch_get_entry_point(int conduit);
#define sdei_arch_get_entry_point(x) sdei_arch_get_entry_point(x)
bool _on_sdei_stack(unsigned long sp);
static inline bool on_sdei_stack(unsigned long sp)
{
if (!IS_ENABLED(CONFIG_VMAP_STACK))
return false;
if (!IS_ENABLED(CONFIG_ARM_SDE_INTERFACE))
return false;
if (in_nmi())
return _on_sdei_stack(sp);
return false;
}
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SDEI_H */
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