1 /******************************************************************************
3 * Name: aclinux.h - OS specific defines, etc. for Linux
5 *****************************************************************************/
7 #ifndef _ACPICA__ACACESS_H_
8 #define _ACPICA__ACACESS_H_
10 #define ACPI_USE_SYSTEM_CLIBRARY
11 #define ACPI_USE_DO_WHILE_0
12 #define ACPI_MUTEX_TYPE ACPI_BINARY_SEMAPHORE
19 /* Host-dependent types and defines for in-kernel ACPICA */
21 #define ACPI_MACHINE_WIDTH BITS
23 #define ACPI_SPINLOCK tShortSpinlock
24 #define ACPI_CPU_FLAGS unsigned long
26 #define COMPILER_DEPENDENT_UINT64 Uint64
27 #define COMPILER_DEPENDENT_INT64 Sint64
29 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) do { \
30 q32 = DivMod64( ((Sint64)n_hi<<32)|n_lo, d32, &r32 ); \
32 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) do { \
34 if(n_hi & 1) n_lo |= (1 << 31); \
38 #else /* !__KERNEL__ */
42 #endif /* __KERNEL__ */
51 #define ACPI_SYSTEM_XFACE
54 * Overrides for in-kernel ACPICA
56 static inline acpi_thread_id acpi_os_get_thread_id(void)
58 return (ACPI_THREAD_ID) (unsigned long) current;
62 * The irqs_disabled() check is for resume from RAM.
63 * Interrupts are off during resume, just like they are for boot.
64 * However, boot has (system_state != SYSTEM_RUNNING)
65 * to quiet __might_sleep() in kmalloc() and resume does not.
67 static inline void *acpi_os_allocate(acpi_size size)
72 static inline void *acpi_os_allocate_zeroed(acpi_size size)
74 return calloc(size, 1);
77 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
79 // return kmem_cache_zalloc(cache,
80 // irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
83 #define ACPI_ALLOCATE(a) acpi_os_allocate(a)
84 #define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
85 #define ACPI_FREE(a) free(a)
87 #ifndef CONFIG_PREEMPT
89 * Used within ACPICA to show where it is safe to preempt execution
90 * when CONFIG_PREEMPT=n
92 #define ACPI_PREEMPTION_POINT() \
99 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
100 * argument and uses that as a name for the lock in debugging.
101 * By executing spin_lock_init() in a macro the key changes from "lock" for
102 * all locks to the name of the argument of acpi_os_create_lock(), which
103 * prevents lockdep from reporting false positives for ACPICA locks.
105 #define AcpiOsCreateLock(__handle) \
107 tShortlock *lock = ACPI_ALLOCATE_ZEROED(sizeof(*lock)); \
110 *(__handle) = lock; \
112 lock ? AE_OK : AE_NO_MEMORY; \
115 #endif /* __KERNEL__ */
118 #endif /* __ACLINUX_H__ */