prime/src/Dolphin/GBA/GBA.c

/*






































*/
#include "dolphin/GBAPriv.h"

static GBASecParam SecParams[4];
GBAControl __GBA[4];
BOOL __GBAReset = FALSE;

static BOOL OnReset(BOOL);

static OSResetFunctionInfo ResetFunctionInfo = {OnReset, 127};

static void ShortCommandProc(s32 chan) {
  GBAControl* gba;
  gba = &__GBA[chan];

  if (gba->ret != 0) {
    return;
  }

  if (gba->input[0] != 0 || gba->input[1] != 4) {
    gba->ret = 1;
    return;
  }

  gba->status[0] = gba->input[2] & GBA_JSTAT_MASK;
}

/*










*/

void GBAInit() {
  GBAControl* gba;
  s32 chan;

  for (chan = 0; chan < 4; ++chan) {
    gba = &__GBA[chan];
    gba->delay = OSMicrosecondsToTicks(60);
    OSInitThreadQueue(&gba->threadQueue);
    gba->param = &SecParams[chan];

    ASSERT((u32) gba->param % 32 == 0);
  }
  OSInitAlarm();

  DSPInit();

  __GBAReset = FALSE;
  OSRegisterResetFunction(&ResetFunctionInfo);
}

/*



















*/
s32 GBAGetStatusAsync(s32 chan, u8* status, GBACallback callback) {
  GBAControl* gba;
  gba = &__GBA[chan];
  if (gba->callback != NULL) {
    return GBA_BUSY;
  }

  gba->output[0] = 0;
  gba->status = status;
  gba->callback = callback;
  return __GBATransfer(chan, 1, 3, ShortCommandProc);
}
/*

*/
s32 GBAGetStatus(s32 chan, u8* status) {
  GBAControl* gba = &__GBA[chan];

  //
  s32 ret = GBAGetStatusAsync(chan, status, __GBASyncCallback);
  if (ret != GBA_READY) {

    return ret;
  }
  return __GBASync(chan);
}
/*




























*/
s32 GBAResetAsync(s32 chan, u8* status, GBACallback callback) {
  GBAControl* gba = &__GBA[chan];
  s32 ret;
  if (gba->callback != NULL) {

    return GBA_BUSY;
  }
  gba->output[0] = 0xFF;
  gba->status = status;
  gba->callback = callback;
  return __GBATransfer(chan, 1, 3, ShortCommandProc);
}
/*
*/
s32 GBAReset(s32 chan, u8* status) {
  GBAControl* gba = &__GBA[chan];
  s32 ret;

  ret = GBAResetAsync(chan, status, __GBASyncCallback);
  if (ret != GBA_READY) {

    return ret;
  }
  return __GBASync(chan);
}

/*











*/
BOOL OnReset(BOOL) {
  __GBAReset = TRUE;
  return TRUE;
}