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