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 //#define ACPI_DEBUG_OUTPUT     1
  15
  16 #ifdef __KERNEL__
  17
  18 #include <acess.h>
  19
  20 /* Host-dependent types and defines for in-kernel ACPICA */
  21
  22 #define ACPI_MACHINE_WIDTH          BITS
  23
  24 typedef struct sACPICache       tACPICache;
  25
  26 #define ACPI_CACHE_T    tACPICache
  27 #define ACPI_SPINLOCK               tShortSpinlock*
  28 #define ACPI_CPU_FLAGS              unsigned long
  29
  30 #define COMPILER_DEPENDENT_UINT64       Uint64
  31 #define COMPILER_DEPENDENT_INT64        Sint64
  32
  33 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) do { \
  34         Uint64  rem; \
  35         Sint64  num = ((Sint64)n_hi<<32)|n_lo; \
  36          int    sgn = 1; \
  37         if(num < 0) {num = -num; sgn = -sgn; } \
  38         if(d32 < 0) {d32 = -d32; sgn = -sgn; } \
  39         q32 = sgn * DivMod64U( num, d32, &rem ); \
  40         r32 = rem; \
  41         }while(0)
  42 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) do { \
  43         n_lo >>= 1; \
  44         if(n_hi & 1)    n_lo |= (1 << 31); \
  45         n_hi >>= 1; \
  46         }while(0)
  47
  48 #else /* !__KERNEL__ */
  49
  50 #error "Kernel only"
  51
  52 #endif /* __KERNEL__ */
  53
  54 /* Linux uses GCC */
  55
  56 #include "acgcc.h"
  57
  58
  59 #if 0
  60 #ifdef __KERNEL__
  61 #define ACPI_SYSTEM_XFACE
  62 #include <actypes.h>
  63 /*
  64  * Overrides for in-kernel ACPICA
  65  */
  66 static inline acpi_thread_id acpi_os_get_thread_id(void)
  67 {
  68     return (ACPI_THREAD_ID) (unsigned long) current;
  69 }
  70
  71 /*
  72  * The irqs_disabled() check is for resume from RAM.
  73  * Interrupts are off during resume, just like they are for boot.
  74  * However, boot has  (system_state != SYSTEM_RUNNING)
  75  * to quiet __might_sleep() in kmalloc() and resume does not.
  76  */
  77 static inline void *acpi_os_allocate(acpi_size size)
  78 {
  79     return malloc(size);
  80 }
  81
  82 static inline void *acpi_os_allocate_zeroed(acpi_size size)
  83 {
  84     return calloc(size, 1);
  85 }
  86
  87 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
  88 {
  89 //    return kmem_cache_zalloc(cache,
  90 //        irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL);
  91 }
  92
  93 #define ACPI_ALLOCATE(a)        acpi_os_allocate(a)
  94 #define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
  95 #define ACPI_FREE(a)            free(a)
  96
  97 #ifndef CONFIG_PREEMPT
  98 /*
  99  * Used within ACPICA to show where it is safe to preempt execution
 100  * when CONFIG_PREEMPT=n
 101  */
 102 #define ACPI_PREEMPTION_POINT() \
 103     do { \
 104         Threads_Yield(); \
 105     } while (0)
 106 #endif
 107
 108 /*
 109  * When lockdep is enabled, the spin_lock_init() macro stringifies it's
 110  * argument and uses that as a name for the lock in debugging.
 111  * By executing spin_lock_init() in a macro the key changes from "lock" for
 112  * all locks to the name of the argument of acpi_os_create_lock(), which
 113  * prevents lockdep from reporting false positives for ACPICA locks.
 114  */
 115 #define AcpiOsCreateLock(__handle)                              \
 116 ({                                                              \
 117         tShortlock *lock = ACPI_ALLOCATE_ZEROED(sizeof(*lock)); \
 118                                                                 \
 119         if (lock) {                                             \
 120                 *(__handle) = lock;                             \
 121         }                                                       \
 122         lock ? AE_OK : AE_NO_MEMORY;                            \
 123 })
 124
 125 #endif /* __KERNEL__ */
 126 #endif
 127
 128 #endif /* __ACLINUX_H__ */