threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* IA64 specific ACPICA environments and implementation
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*
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* Copyright (C) 2014, Intel Corporation
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* Author: Lv Zheng <lv.zheng@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _ASM_IA64_ACENV_H
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#define _ASM_IA64_ACENV_H
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#include <asm/intrinsics.h>
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#define COMPILER_DEPENDENT_INT64 long
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#define COMPILER_DEPENDENT_UINT64 unsigned long
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/* Asm macros */
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static inline int
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ia64_acpi_acquire_global_lock(unsigned int *lock)
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{
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unsigned int old, new, val;
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do {
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old = *lock;
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new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
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val = ia64_cmpxchg4_acq(lock, new, old);
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} while (unlikely (val != old));
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return (new < 3) ? -1 : 0;
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}
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static inline int
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ia64_acpi_release_global_lock(unsigned int *lock)
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{
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unsigned int old, new, val;
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do {
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old = *lock;
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new = old & ~0x3;
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val = ia64_cmpxchg4_acq(lock, new, old);
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} while (unlikely (val != old));
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return old & 0x1;
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}
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#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
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((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
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#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
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((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
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#endif /* _ASM_IA64_ACENV_H */
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