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- /*
- * X86 specific ACPICA environments and implementation
- *
- * Copyright (C) 2014, Intel Corporation
- * Author: Lv Zheng <lv.zheng@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #ifndef _ASM_X86_ACENV_H
- #define _ASM_X86_ACENV_H
- #include <asm/special_insns.h>
- /* Asm macros */
- #define ACPI_FLUSH_CPU_CACHE() wbinvd()
- #ifdef CONFIG_ACPI
- int __acpi_acquire_global_lock(unsigned int *lock);
- int __acpi_release_global_lock(unsigned int *lock);
- #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
- ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
- #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
- ((Acq) = __acpi_release_global_lock(&facs->global_lock))
- /*
- * Math helper asm macros
- */
- #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
- asm("divl %2;" \
- : "=a"(q32), "=d"(r32) \
- : "r"(d32), \
- "0"(n_lo), "1"(n_hi))
- #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
- asm("shrl $1,%2 ;" \
- "rcrl $1,%3;" \
- : "=r"(n_hi), "=r"(n_lo) \
- : "0"(n_hi), "1"(n_lo))
- #endif
- #endif /* _ASM_X86_ACENV_H */
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