File: /usr/src/linux/include/asm-arm/fiq.h

1     /*
2      *  linux/include/asm-arm/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