1 /* 2 * X86 specific ACPICA environments and implementation 3 * 4 * Copyright (C) 2014, Intel Corporation 5 * Author: Lv Zheng <lv.zheng@intel.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #ifndef _ASM_X86_ACENV_H 13 #define _ASM_X86_ACENV_H 14 15 #include <asm/special_insns.h> 16 17 /* Asm macros */ 18 19 #define ACPI_FLUSH_CPU_CACHE() wbinvd() 20 21 int __acpi_acquire_global_lock(unsigned int *lock); 22 int __acpi_release_global_lock(unsigned int *lock); 23 24 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \ 25 ((Acq) = __acpi_acquire_global_lock(&facs->global_lock)) 26 27 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ 28 ((Acq) = __acpi_release_global_lock(&facs->global_lock)) 29 30 /* 31 * Math helper asm macros 32 */ 33 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ 34 asm("divl %2;" \ 35 : "=a"(q32), "=d"(r32) \ 36 : "r"(d32), \ 37 "0"(n_lo), "1"(n_hi)) 38 39 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ 40 asm("shrl $1,%2 ;" \ 41 "rcrl $1,%3;" \ 42 : "=r"(n_hi), "=r"(n_lo) \ 43 : "0"(n_hi), "1"(n_lo)) 44 45 #endif /* _ASM_X86_ACENV_H */ 46