Externals/ACPICA/acacess.h

   1 /******************************************************************************
   2  *
   3  * Name: aclinux.h - OS specific defines, etc. for Linux
   4  *
   5  *****************************************************************************/
   6
   7 #ifndef _ACPICA__ACACESS_H_
   8 #define _ACPICA__ACACESS_H_
   9
  10 #define ACPI_USE_SYSTEM_CLIBRARY
  11 #define ACPI_USE_DO_WHILE_0
  12 #define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE
  13
  14
  15 #ifdef __KERNEL__
  16
  17 #include <acess.h>
  18
  19 /* Host-dependent types and defines for in-kernel ACPICA */
  20
  21 #define ACPI_MACHINE_WIDTH          BITS
  22
  23 #define ACPI_SPINLOCK               tShortSpinlock
  24 #define ACPI_CPU_FLAGS              unsigned long
  25
  26 #define COMPILER_DEPENDENT_UINT64       Uint64
  27 #define COMPILER_DEPENDENT_INT64        Sint64
  28
  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 ); \
  31         }while(0)
  32 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) do { \
  33         n_lo >>= 1; \
  34         if(n_hi & 1)    n_lo |= (1 << 31); \
  35         n_hi >>= 1; \
  36         }while(0)
  37
  38 #else /* !__KERNEL__ */
  39
  40 #error "Kernel only"
  41
  42 #endif /* __KERNEL__ */
  43
  44 /* Linux uses GCC */
  45
  46 #include "acgcc.h"
  47
  48
  49 #if 0
  50 #ifdef __KERNEL__
  51 #define ACPI_SYSTEM_XFACE
  52 #include <actypes.h>
  53 /*
  54  * Overrides for in-kernel ACPICA
  55  */
  56 static inline acpi_thread_id acpi_os_get_thread_id(void)
  57 {
  58     return (ACPI_THREAD_ID) (unsigned long) current;
  59 }
  60
  61 /*
  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.
  66  */
  67 static inline void *acpi_os_allocate(acpi_size size)
  68 {
  69     return malloc(size);
  70 }
  71
  72 static inline void *acpi_os_allocate_zeroed(acpi_size size)
  73 {
  74     return calloc(size, 1);
  75 }
  76
  77 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
  78 {
  79 //    return kmem_cache_zalloc(cache,
  80 //        irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
  81 }
  82
  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)
  86
  87 #ifndef CONFIG_PREEMPT
  88 /*
  89  * Used within ACPICA to show where it is safe to preempt execution
  90  * when CONFIG_PREEMPT=n
  91  */
  92 #define ACPI_PREEMPTION_POINT() \
  93     do { \
  94         Threads_Yield(); \
  95     } while (0)
  96 #endif
  97
  98 /*
  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.
 104  */
 105 #define AcpiOsCreateLock(__handle)                              \
 106 ({                                                              \
 107         tShortlock *lock = ACPI_ALLOCATE_ZEROED(sizeof(*lock)); \
 108                                                                 \
 109         if (lock) {                                             \
 110                 *(__handle) = lock;                             \
 111         }                                                       \
 112         lock ? AE_OK : AE_NO_MEMORY;                            \
 113 })
 114
 115 #endif /* __KERNEL__ */
 116 #endif
 117
 118 #endif /* __ACLINUX_H__ */