[deliverable/linux.git] / arch / mips / include / asm / spinlock_types.h

#ifndef _ASM_SPINLOCK_TYPES_H
#define _ASM_SPINLOCK_TYPES_H

#ifndef __LINUX_SPINLOCK_TYPES_H
# error "please don't include this file directly"
#endif

#include <linux/types.h>

#include <asm/byteorder.h>

typedef union {
	/*
	 * bits	 0..15 : serving_now
	 * bits 16..31 : ticket
	 */
	u32 lock;
	struct {
#ifdef __BIG_ENDIAN
		u16 ticket;
		u16 serving_now;
#else
		u16 serving_now;
		u16 ticket;
#endif
	} h;
} arch_spinlock_t;

#define __ARCH_SPIN_LOCK_UNLOCKED	{ .lock = 0 }

typedef struct {
	volatile unsigned int lock;
} arch_rwlock_t;

#define __ARCH_RW_LOCK_UNLOCKED		{ 0 }

#endif
Commit	Line	Data
fb1c8f93 IM	1	#ifndef _ASM_SPINLOCK_TYPES_H
	2	#define _ASM_SPINLOCK_TYPES_H
	3
	4	#ifndef __LINUX_SPINLOCK_TYPES_H
	5	# error "please don't include this file directly"
	6	#endif
	7
500c2e1f DD	8	#include <linux/types.h>
	9
	10	#include <asm/byteorder.h>
	11
	12	typedef union {
2a31b033	13	/*
70342287	14	* bits 0..15 : serving_now
500c2e1f	15	* bits 16..31 : ticket
2a31b033	16	*/
500c2e1f DD	17	u32 lock;
	18	struct {
	19	#ifdef __BIG_ENDIAN
	20	u16 ticket;
	21	u16 serving_now;
	22	#else
	23	u16 serving_now;
	24	u16 ticket;
	25	#endif
	26	} h;
445c8951	27	} arch_spinlock_t;
fb1c8f93	28
500c2e1f	29	#define __ARCH_SPIN_LOCK_UNLOCKED { .lock = 0 }
fb1c8f93 IM	30
	31	typedef struct {
	32	volatile unsigned int lock;
fb3a6bbc	33	} arch_rwlock_t;
fb1c8f93	34
fb3a6bbc	35	#define __ARCH_RW_LOCK_UNLOCKED { 0 }
fb1c8f93 IM	36
fb1c8f93 IM	37	#endif