rom/timer/timer_intern.h

   1 #ifndef _TIMER_INTERN_H
   2 #define _TIMER_INTERN_H
   3
   4 /*
   5     Copyright © 1995-2018, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: Internal information about the timer.device and HIDD's
   9     Lang: english
  10 */
  11
  12 #include <aros/config.h>
  13
  14 #include <exec/execbase.h>
  15 #include <exec/lists.h>
  16 #include <exec/interrupts.h>
  17 #include <exec/io.h>
  18 #include <exec/devices.h>
  19 #include <exec/interrupts.h>
  20 #include <devices/timer.h>
  21 #include <dos/bptr.h>
  22 #include <hardware/intbits.h>
  23 #include <aros/asmcall.h>
  24
  25 /* Platform-specific portion */
  26 #include <timer_platform.h>
  27
  28 #if defined(__AROSEXEC_SMP__)
  29 #include <aros/types/spinlock_s.h>
  30 #endif
  31
  32 /*
  33  * First two of these correspond to UNIT_MICROHZ and UNIT_VBLANK.
  34  * This is important.
  35  */
  36 #define TL_MICROHZ      0
  37 #define TL_VBLANK       1
  38 #define TL_WAITVBL      2
  39 #define NUM_LISTS       3
  40
  41 struct TimerBase
  42 {
  43     /* Required by the system */
  44     struct Device        tb_Device;             /* Our base                                             */
  45     APTR                 tb_KernelBase;         /* kernel.resource base                                 */
  46
  47     /* Time counters */
  48     struct timeval       tb_CurrentTime;        /* Absolute system time. Can be set by TR_SETSYSTIME.   */
  49     struct timeval       tb_Elapsed;            /* Relative system time. Used for measuring intervals.  */
  50
  51     /* This is required for hardware-specific code */
  52     APTR                 tb_TimerIRQHandle;     /* Timer IRQ handle                                     */
  53     struct Interrupt     tb_VBlankInt;          /* Used by older implementations, needs to be removed   */
  54     struct Interrupt     tb_ResetHandler;       /* Stops interrupt generation before a reboot           */
  55
  56     /* Request queues */
  57     struct MinList       tb_Lists[NUM_LISTS];
  58
  59     /* EClock counter */
  60     UQUAD                tb_ticks_total;        /* Effective EClock value                               */
  61     ULONG                tb_ticks_sec;          /* Fraction of second for CurrentTime in ticks          */
  62     ULONG                tb_ticks_elapsed;      /* Fraction of second for Elapsed in ticks              */
  63     ULONG                tb_prev_tick;          /* Hardware-specific                                    */
  64     ULONG                tb_eclock_rate;        /* EClock frequency                                     */
  65
  66 #ifdef USE_VBLANK_EMU
  67     struct timerequest   tb_vblank_timerequest; /* VBlank emulation request                             */
  68 #endif
  69
  70     struct PlatformTimer tb_Platform;           /* Platform-specific data                               */
  71 #if defined(__AROSEXEC_SMP__)
  72     void                *tb_ExecLockBase;
  73     void                *tb_ListLock;
  74 #endif
  75 };
  76
  77 #define GetTimerBase(tb)        ((struct TimerBase *)(tb))
  78 #define GetDevice(tb)           ((struct Device *)(tb))
  79
  80 BOOL common_BeginIO(struct timerequest *timereq, struct TimerBase *TimerBase);
  81 void TimerProcessMicroHZ(struct TimerBase *TimerBase, struct ExecBase *SysBase, BOOL locked);
  82 void TimerProcessVBlank(struct TimerBase *TimerBase, struct ExecBase *SysBase, BOOL locked);
  83 #define handleMicroHZ(x,y) TimerProcessMicroHZ(x,y,FALSE)
  84 #define handleVBlank(x,y) TimerProcessVBlank(x,y,FALSE)
  85 void EClockUpdate(struct TimerBase *TimerBase);
  86 void EClockSet(struct TimerBase *TimerBase);
  87
  88 /* Call exec VBlank vector, if present */
  89 static inline void vblank_Cause(struct ExecBase *SysBase)
  90 {
  91     struct IntVector *iv = &SysBase->IntVects[INTB_VERTB];
  92
  93     if (iv->iv_Code)
  94         AROS_INTC2(iv->iv_Code, iv->iv_Data, INTF_VERTB);
  95 }
  96
  97 #endif /* _TIMER_INTERN_H */