1 /* SPDX-License-Identifier: GPL-2.0 */ 2 // Copyright (C) 2017 Arm Ltd. 3 #ifndef __ASM_SDEI_H 4 #define __ASM_SDEI_H 5 6 /* Values for sdei_exit_mode */ 7 #define SDEI_EXIT_HVC 0 8 #define SDEI_EXIT_SMC 1 9 10 #define SDEI_STACK_SIZE IRQ_STACK_SIZE 11 12 #ifndef __ASSEMBLY__ 13 14 #include <linux/linkage.h> 15 #include <linux/preempt.h> 16 #include <linux/types.h> 17 18 #include <asm/virt.h> 19 20 DECLARE_PER_CPU(struct sdei_registered_event *, sdei_active_normal_event); 21 DECLARE_PER_CPU(struct sdei_registered_event *, sdei_active_critical_event); 22 23 extern unsigned long sdei_exit_mode; 24 25 /* Software Delegated Exception entry point from firmware*/ 26 asmlinkage void __sdei_asm_handler(unsigned long event_num, unsigned long arg, 27 unsigned long pc, unsigned long pstate); 28 29 /* and its CONFIG_UNMAP_KERNEL_AT_EL0 trampoline */ 30 asmlinkage void __sdei_asm_entry_trampoline(unsigned long event_num, 31 unsigned long arg, 32 unsigned long pc, 33 unsigned long pstate); 34 35 /* Abort a running handler. Context is discarded. */ 36 void __sdei_handler_abort(void); 37 38 /* 39 * The above entry point does the minimum to call C code. This function does 40 * anything else, before calling the driver. 41 */ 42 struct sdei_registered_event; 43 asmlinkage unsigned long __sdei_handler(struct pt_regs *regs, 44 struct sdei_registered_event *arg); 45 46 unsigned long do_sdei_event(struct pt_regs *regs, 47 struct sdei_registered_event *arg); 48 49 unsigned long sdei_arch_get_entry_point(int conduit); 50 #define sdei_arch_get_entry_point(x) sdei_arch_get_entry_point(x) 51 52 #endif /* __ASSEMBLY__ */ 53 #endif /* __ASM_SDEI_H */ 54