From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/ia64/include/asm/acenv.h | 49 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 arch/ia64/include/asm/acenv.h (limited to 'arch/ia64/include/asm/acenv.h') diff --git a/arch/ia64/include/asm/acenv.h b/arch/ia64/include/asm/acenv.h new file mode 100644 index 000000000..9d673cd4c --- /dev/null +++ b/arch/ia64/include/asm/acenv.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * IA64 specific ACPICA environments and implementation + * + * Copyright (C) 2014, Intel Corporation + * Author: Lv Zheng + */ + +#ifndef _ASM_IA64_ACENV_H +#define _ASM_IA64_ACENV_H + +#include + +#define COMPILER_DEPENDENT_INT64 long +#define COMPILER_DEPENDENT_UINT64 unsigned long + +/* Asm macros */ + +static inline int +ia64_acpi_acquire_global_lock(unsigned int *lock) +{ + unsigned int old, new, val; + do { + old = *lock; + new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); + val = ia64_cmpxchg4_acq(lock, new, old); + } while (unlikely (val != old)); + return (new < 3) ? -1 : 0; +} + +static inline int +ia64_acpi_release_global_lock(unsigned int *lock) +{ + unsigned int old, new, val; + do { + old = *lock; + new = old & ~0x3; + val = ia64_cmpxchg4_acq(lock, new, old); + } while (unlikely (val != old)); + return old & 0x1; +} + +#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \ + ((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock)) + +#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ + ((Acq) = ia64_acpi_release_global_lock(&facs->global_lock)) + +#endif /* _ASM_IA64_ACENV_H */ -- cgit v1.2.3