Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andi Kleen |
57 |
65.52% |
2 |
22.22% |
| Lv Zheng |
13 |
14.94% |
1 |
11.11% |
| Alexey Y. Starikovskiy |
4 |
4.60% |
1 |
11.11% |
| Len Brown |
4 |
4.60% |
1 |
11.11% |
| Kirill A. Shutemov |
3 |
3.45% |
1 |
11.11% |
| Joe Perches |
2 |
2.30% |
1 |
11.11% |
| Andrew Morton |
2 |
2.30% |
1 |
11.11% |
| Thomas Gleixner |
2 |
2.30% |
1 |
11.11% |
| Total |
87 |
|
9 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* X86 specific ACPICA environments and implementation
*
* Copyright (C) 2014, Intel Corporation
* Author: Lv Zheng <lv.zheng@intel.com>
*/
#ifndef _ASM_X86_ACENV_H
#define _ASM_X86_ACENV_H
#include <asm/special_insns.h>
/* Asm macros */
/*
* ACPI_FLUSH_CPU_CACHE() flushes caches on entering sleep states.
* It is required to prevent data loss.
*
* While running inside virtual machine, the kernel can bypass cache flushing.
* Changing sleep state in a virtual machine doesn't affect the host system
* sleep state and cannot lead to data loss.
*/
#define ACPI_FLUSH_CPU_CACHE() \
do { \
if (!cpu_feature_enabled(X86_FEATURE_HYPERVISOR)) \
wbinvd(); \
} while (0)
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 */