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_OSL_MUTEX
  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         Uint64  rem; \
  31         Sint64  num = ((Sint64)n_hi<<32)|n_lo; \
  32          int    sgn = 1; \
  33         if(num < 0) {num = -num; sgn = -sgn; } \
  34         if(d32 < 0) {d32 = -d32; sgn = -sgn; } \
  35         q32 = sgn * DivMod64U( num, d32, &rem ); \
  36         r32 = rem; \
  37         }while(0)
  38 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) do { \
  39         n_lo >>= 1; \
  40         if(n_hi & 1)    n_lo |= (1 << 31); \
  41         n_hi >>= 1; \
  42         }while(0)
  43
  44 #else /* !__KERNEL__ */
  45
  46 #error "Kernel only"
  47
  48 #endif /* __KERNEL__ */
  49
  50 /* Linux uses GCC */
  51
  52 #include "acgcc.h"
  53
  54
  55 #if 0
  56 #ifdef __KERNEL__
  57 #define ACPI_SYSTEM_XFACE
  58 #include <actypes.h>
  59 /*
  60  * Overrides for in-kernel ACPICA
  61  */
  62 static inline acpi_thread_id acpi_os_get_thread_id(void)
  63 {
  64     return (ACPI_THREAD_ID) (unsigned long) current;
  65 }
  66
  67 /*
  68  * The irqs_disabled() check is for resume from RAM.
  69  * Interrupts are off during resume, just like they are for boot.
  70  * However, boot has  (system_state != SYSTEM_RUNNING)
  71  * to quiet __might_sleep() in kmalloc() and resume does not.
  72  */
  73 static inline void *acpi_os_allocate(acpi_size size)
  74 {
  75     return malloc(size);
  76 }
  77
  78 static inline void *acpi_os_allocate_zeroed(acpi_size size)
  79 {
  80     return calloc(size, 1);
  81 }
  82
  83 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
  84 {
  85 //    return kmem_cache_zalloc(cache,
  86 //        irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
  87 }
  88
  89 #define ACPI_ALLOCATE(a)        acpi_os_allocate(a)
  90 #define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
  91 #define ACPI_FREE(a)            free(a)
  92
  93 #ifndef CONFIG_PREEMPT
  94 /*
  95  * Used within ACPICA to show where it is safe to preempt execution
  96  * when CONFIG_PREEMPT=n
  97  */
  98 #define ACPI_PREEMPTION_POINT() \
  99     do { \
 100         Threads_Yield(); \
 101     } while (0)
 102 #endif
 103
 104 /*
 105  * When lockdep is enabled, the spin_lock_init() macro stringifies it's
 106  * argument and uses that as a name for the lock in debugging.
 107  * By executing spin_lock_init() in a macro the key changes from "lock" for
 108  * all locks to the name of the argument of acpi_os_create_lock(), which
 109  * prevents lockdep from reporting false positives for ACPICA locks.
 110  */
 111 #define AcpiOsCreateLock(__handle)                              \
 112 ({                                                              \
 113         tShortlock *lock = ACPI_ALLOCATE_ZEROED(sizeof(*lock)); \
 114                                                                 \
 115         if (lock) {                                             \
 116                 *(__handle) = lock;                             \
 117         }                                                       \
 118         lock ? AE_OK : AE_NO_MEMORY;                            \
 119 })
 120
 121 #endif /* __KERNEL__ */
 122 #endif
 123
 124 #endif /* __ACLINUX_H__ */