1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *	Trap handling definitions.
4  *
5  *	Copyright (C) 2002, 2003  Maciej W. Rozycki
6  */
7 #ifndef _ASM_TRAPS_H
8 #define _ASM_TRAPS_H
9 
10 /*
11  * Possible status responses for a board_be_handler backend.
12  */
13 #define MIPS_BE_DISCARD 0		/* return with no action */
14 #define MIPS_BE_FIXUP	1		/* return to the fixup code */
15 #define MIPS_BE_FATAL	2		/* treat as an unrecoverable error */
16 
17 extern void (*board_be_init)(void);
18 void mips_set_be_handler(int (*handler)(struct pt_regs *reg, int is_fixup));
19 
20 extern void (*board_nmi_handler_setup)(void);
21 extern void (*board_ejtag_handler_setup)(void);
22 extern void (*board_bind_eic_interrupt)(int irq, int regset);
23 extern void (*board_ebase_setup)(void);
24 extern void (*board_cache_error_setup)(void);
25 
26 extern int register_nmi_notifier(struct notifier_block *nb);
27 extern void reserve_exception_space(phys_addr_t addr, unsigned long size);
28 extern char except_vec_nmi[];
29 
30 #define VECTORSPACING 0x100	/* for EI/VI mode */
31 
32 #define nmi_notifier(fn, pri)						\
33 ({									\
34 	static struct notifier_block fn##_nb = {			\
35 		.notifier_call = fn,					\
36 		.priority = pri						\
37 	};								\
38 									\
39 	register_nmi_notifier(&fn##_nb);				\
40 })
41 
42 #endif /* _ASM_TRAPS_H */
43