1 /*
2  *  arch/arm/include/asm/fiq.h
3  *
4  * Support for FIQ on ARM architectures.
5  * Written by Philip Blundell <philb@gnu.org>, 1998
6  * Re-written by Russell King
7  */
8 
9 #ifndef __ASM_FIQ_H
10 #define __ASM_FIQ_H
11 
12 #include <asm/ptrace.h>
13 
14 struct fiq_handler {
15 	struct fiq_handler *next;
16 	/* Name
17 	 */
18 	const char *name;
19 	/* Called to ask driver to relinquish/
20 	 * reacquire FIQ
21 	 * return zero to accept, or -<errno>
22 	 */
23 	int (*fiq_op)(void *, int relinquish);
24 	/* data for the relinquish/reacquire functions
25 	 */
26 	void *dev_id;
27 };
28 
29 extern int claim_fiq(struct fiq_handler *f);
30 extern void release_fiq(struct fiq_handler *f);
31 extern void set_fiq_handler(void *start, unsigned int length);
32 extern void set_fiq_regs(struct pt_regs *regs);
33 extern void get_fiq_regs(struct pt_regs *regs);
34 extern void enable_fiq(int fiq);
35 extern void disable_fiq(int fiq);
36 
37 #endif
38