/* * 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() 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 /* _ASM_X86_ACENV_H */