Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Mosberger-Tang |
165 |
86.84% |
4 |
44.44% |
| Lv Zheng |
13 |
6.84% |
1 |
11.11% |
| Linus Torvalds (pre-git) |
6 |
3.16% |
2 |
22.22% |
| Alexey Y. Starikovskiy |
4 |
2.11% |
1 |
11.11% |
| Thomas Gleixner |
2 |
1.05% |
1 |
11.11% |
| Total |
190 |
|
9 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* IA64 specific ACPICA environments and implementation
*
* Copyright (C) 2014, Intel Corporation
* Author: Lv Zheng <lv.zheng@intel.com>
*/
#ifndef _ASM_IA64_ACENV_H
#define _ASM_IA64_ACENV_H
#include <asm/intrinsics.h>
#define COMPILER_DEPENDENT_INT64 long
#define COMPILER_DEPENDENT_UINT64 unsigned long
/* Asm macros */
static inline int
ia64_acpi_acquire_global_lock(unsigned int *lock)
{
unsigned int old, new, val;
do {
old = *lock;
new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
val = ia64_cmpxchg4_acq(lock, new, old);
} while (unlikely (val != old));
return (new < 3) ? -1 : 0;
}
static inline int
ia64_acpi_release_global_lock(unsigned int *lock)
{
unsigned int old, new, val;
do {
old = *lock;
new = old & ~0x3;
val = ia64_cmpxchg4_acq(lock, new, old);
} while (unlikely (val != old));
return old & 0x1;
}
#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
#endif /* _ASM_IA64_ACENV_H */