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07d83914 LZ |
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 | ||
07d83914 LZ |
17 | /* Asm macros */ |
18 | ||
19 | #define ACPI_FLUSH_CPU_CACHE() wbinvd() | |
20 | ||
07d83914 LZ |
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 | ||
07d83914 | 45 | #endif /* _ASM_X86_ACENV_H */ |