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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*/
#ifndef __ASM_SPINLOCK_TYPES_H
#define __ASM_SPINLOCK_TYPES_H
typedef struct {
volatile unsigned int slock;
} arch_spinlock_t;
#define __ARCH_SPIN_LOCK_UNLOCKED__ 0
#define __ARCH_SPIN_LOCK_LOCKED__ 1
#define __ARCH_SPIN_LOCK_UNLOCKED { __ARCH_SPIN_LOCK_UNLOCKED__ }
#define __ARCH_SPIN_LOCK_LOCKED { __ARCH_SPIN_LOCK_LOCKED__ }
/*
* Unlocked : 0x0100_0000
* Read lock(s) : 0x00FF_FFFF to 0x01 (Multiple Readers decrement it)
* Write lock : 0x0, but only if prior value is "unlocked" 0x0100_0000
*/
typedef struct {
volatile unsigned int counter;
#ifndef CONFIG_ARC_HAS_LLSC
arch_spinlock_t lock_mutex;
#endif
} arch_rwlock_t;
#define __ARCH_RW_LOCK_UNLOCKED__ 0x01000000
#define __ARCH_RW_LOCK_UNLOCKED { .counter = __ARCH_RW_LOCK_UNLOCKED__ }
#endif
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