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More sif cleanup. tagMode is no longer needed. 

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2495 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
arcum42 2010-01-23 10:07:57 +00:00
parent 26c25a2537
commit 6d7f46751c
2 changed files with 45 additions and 30 deletions
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71
pcsx2/Sif.cpp
View File

@ -55,24 +55,30 @@ void sifInit()
//
// This is, of course, simplified, and more study of these functions is needed.
__forceinline void SIF0EEDma(int &cycles, int &psxCycles, bool &done)
__forceinline void SIF0EEDma(int &cycles, bool &done)
{
#ifdef PCSX2_DEVBUILD
if (dmacRegs->ctrl.STS == STS_SIF0)
{
SIF_LOG("SIF0 stall control");
}
#endif
if (sif0dma->qwc <= 0)
{
tDMA_TAG sTag(sif0dma->chcr._u32);
// Stop if TIE & the IRQ are set, or at the end.
// Remind me to look closer at this. (the IRQ tag of a chcr?)
if ((sif0dma->chcr.TIE && DMA_TAG(sif0dma->chcr._u32).IRQ) || sif0.end)
if ((sif0dma->chcr.TIE && sTag.IRQ) || sif0.end)
{
#ifdef PCSX2_DEVBUILD
if (sif0.end)
SIF_LOG(" EE SIF end");
else
SIF_LOG(" EE SIF interrupt");
#endif
eesifbusy[0] = false;
done = true;
@ -81,16 +87,18 @@ __forceinline void SIF0EEDma(int &cycles, int &psxCycles, bool &done)
else if (sif0.fifo.size >= 4) // Read a tag
{
static __aligned16 u32 tag[4];
sif0.fifo.read((u32*)&tag[0], 4); // Tag
SIF_LOG(" EE SIF read tag: %x %x %x %x", tag[0], tag[1], tag[2], tag[3]);
sif0dma->unsafeTransfer(((tDMA_TAG*)(tag)));
sif0dma->madr = tag[1];
tDMA_TAG pTag(tag[0]);
SIF_LOG(" EE SIF dest chain tag madr:%08X qwc:%04X id:%X irq:%d(%08X_%08X)", sif0dma->madr, sif0dma->qwc, (tag[0] >> 28)&3, (tag[0] >> 31)&1, tag[1], tag[0]);
SIF_LOG(" EE SIF dest chain tag madr:%08X qwc:%04X id:%X irq:%d(%08X_%08X)",
sif0dma->madr, sif0dma->qwc, pTag.ID, pTag.IRQ, tag[1], tag[0]);
switch (DMA_TAG(tag[0]).ID)
switch (pTag.ID)
{
case TAG_REFE:
sif0.end = 1;
@ -134,12 +142,14 @@ __forceinline void SIF0EEDma(int &cycles, int &psxCycles, bool &done)
}
}
__forceinline void SIF1EEDma(int &cycles, int &psxCycles, bool &done)
__forceinline void SIF1EEDma(int &cycles, bool &done)
{
#ifdef PCSX2_DEVBUILD
if (dmacRegs->ctrl.STD == STD_SIF1)
{
SIF_LOG("SIF1 stall control"); // STD == fromSIF1
}
#endif
// If there's no more to transfer.
if (sif1dma->qwc <= 0)
@ -241,19 +251,20 @@ __forceinline void SIF1EEDma(int &cycles, int &psxCycles, bool &done)
}
}
__forceinline void SIF0IOPDma(int &cycles, int &psxCycles, bool &done)
// Note: Test any changes in this function against Grandia III.
__forceinline void SIF0IOPDma(int &psxCycles, bool &done)
{
if (sif0.counter <= 0) // If there's no more to transfer
{
// What this is supposed to do is stop DMA if it is the end of a chain, an interrupt is called, or in normal mode.
// It currently doesn't check for normal mode.
// (Further note: I'm not sure that it needs to check for normal mode.)
tDMA_TAG sTag(sif0.data.data);
// Stop DMA if it is the end of a chain or if irq is set.
// Theoretically also if in normal mode, but I'm not sure that is neccessary.
//
// The old code for this was:
// if (sif0.sifData.data & 0xC0000000)
// which checks if the tag type is refe or end, or if the irq flag is set.
// If the tag is refe or end, sif0.end gets set, so I'm replacing it with something easier to read: --arcum42
if (/*(sif0dma->chcr.MOD == NORMAL_MODE) ||*/ sif0.end || DMA_TAG(sif0.data.data).IRQ)
// This used to check if the tag in sif0.sifData.data was refe or end, and the irq.
// sif0.end gets set if that's true, though, so we check that instead.
// --arcum42
if (sif0.end || sTag.IRQ /* || (sTag.ID & 4) */)
{
SIF_LOG(" IOP SIF Stopped");
@ -279,13 +290,15 @@ __forceinline void SIF0IOPDma(int &cycles, int &psxCycles, bool &done)
sif0.counter = sif0.data.words & 0xFFFFFF;
SIF_LOG(" SIF0 Tag: madr=%lx, tadr=%lx, counter=%lx (%08X_%08X)", HW_DMA9_MADR, HW_DMA9_TADR, sif0.counter, sif0.data.words, sif0.data.data);
#ifdef PCSX2_DEVBUILD
u32 tagId = DMA_TAG(sif0.data.data).ID;
if ((tagId == TAG_REFE) || (tagId == TAG_END))
SIF_LOG(" END");
else
SIF_LOG(" CNT %08X, %08X", sif0.data.data, sif0.data.words);
#endif
done = false;
}
}
@ -305,21 +318,24 @@ __forceinline void SIF0IOPDma(int &cycles, int &psxCycles, bool &done)
}
__forceinline void SIF1IOPDma(int &cycles, int &psxCycles, bool &done)
__forceinline void SIF1IOPDma(int &psxCycles, bool &done)
{
if (sif1.counter <= 0)
{
tDMA_TAG sTag(sif1.data.data);
// Stop on tag IRQ or END
if ((sif1.tagMode & 0x80) || (sif1.tagMode & 0x40))
//if ((sif1.tagMode & 0x80) || (sif1.tagMode & 0x40))
if (/*sif1.end ||*/ sTag.IRQ || (sTag.ID & 4))
{
if (sif1.tagMode & 0x40)
#ifdef PCSX2_DEVBUILD
if (sTag.ID & 4)
SIF_LOG(" IOP SIF end");
else
SIF_LOG(" IOP SIF interrupt");
#endif
// Stop & signal interrupts on IOP
sif1.tagMode = 0;
sif1.data.data = 0;
iopsifbusy[1] = false;
done = true;
@ -339,7 +355,6 @@ __forceinline void SIF1IOPDma(int &cycles, int &psxCycles, bool &done)
HW_DMA10_MADR = sif1.data.data & 0xffffff;
sif1.counter = sif1.data.words;
sif1.tagMode = (sif1.data.data >> 24) & 0xFF;
done = false;
}
}
@ -371,13 +386,13 @@ __forceinline void SIF0Dma()
if (iopsifbusy[0])
{
// If EE SIF0 is enabled.
SIF0IOPDma(cycles, psxCycles, done);
SIF0IOPDma(psxCycles, done);
}
if (eesifbusy[0])
{
// If EE SIF enabled and there's something to transfer.
SIF0EEDma(cycles, psxCycles, done);
SIF0EEDma(cycles, done);
}
}
while (!done);
@ -392,13 +407,13 @@ __forceinline void SIF1Dma()
if (eesifbusy[1])
{
// If EE SIF1 is enabled.
SIF1EEDma(cycles, psxCycles, done);
SIF1EEDma(cycles, done);
}
if (iopsifbusy[1])
{
// If IOP SIF enabled and there's something to transfer.
SIF1IOPDma(cycles, psxCycles, done);
SIF1IOPDma(psxCycles, done);
}
}
while (!done);

4
pcsx2/Sif.h
View File

@ -63,9 +63,9 @@ struct sifFifo
struct _sif
{
sifFifo fifo;
s32 chain;
s32 chain; // Not used.
s32 end;
s32 tagMode;
s32 tagMode; // No longer used.
s32 counter;
struct sifData data;
};