C++ (Cpp) SD_DMA_CHCR Examples

Example #1

File: block.c Project: AKuHAK/ps2sdk

s32 BlockTransWrite(u8 *iopaddr, u32 size, s32 chan)
{
	s32 core = chan & 1;

	BlockTransBuff[core] = 0;
	BlockTransSize[core] = size;
	BlockTransAddr[core] = (u32)iopaddr;

	if(*SD_CORE_ATTR(core) & SD_DMA_IN_PROCESS) return -1;
	if(*SD_DMA_CHCR(core) & SD_DMA_START) return -1;

	*SD_CORE_ATTR(core) &= 0xFFCF;

	*SD_A_TSA_HI(core) = 0;
	*SD_A_TSA_LO(core) = 0;

	*U16_REGISTER(0x1B0+(core*1024)) = 1 << core;

	SetDmaWrite(core);

	*SD_DMA_ADDR(core) = (u32)iopaddr;
	*SD_DMA_MODE(core) = 0x10;
	*SD_DMA_SIZE(core) = (size/64)+((size&63)>0);
	*SD_DMA_CHCR(core) = SD_DMA_CS | SD_DMA_START | SD_DMA_DIR_IOP2SPU;

	return 0;
}

Example #2

File: block.c Project: AKuHAK/ps2sdk

s32 BlockTransWriteFrom(u8 *iopaddr, u32 size, s32 chan, u16 mode, u8 *startaddr)
{
	s32 core = chan & 1;
	s32 offset;

	BlockTransBuff[core] = 0;
	BlockTransSize[core] = size;
	BlockTransAddr[core] = (u32)iopaddr;

	if(startaddr == 0)
		startaddr = iopaddr;

	offset = startaddr - iopaddr;

	if(offset > size)
	{
		if(mode & SD_TRANS_LOOP)
		{
			offset -= size;
			BlockTransBuff[core] = 1;
		}
		else
		{
			return -1;
		}
	}

	if(offset & 1023) offset += 1024;

	iopaddr += (BlockTransSize[core] * BlockTransBuff[core]) + offset;

	if(*SD_CORE_ATTR(core) & SD_DMA_IN_PROCESS) return -1;
	if(*SD_DMA_CHCR(core) & SD_DMA_START) return -1;

	*SD_CORE_ATTR(core) &= 0xFFCF;

	*SD_A_TSA_HI(core) = 0;
	*SD_A_TSA_LO(core) = 0;

	*U16_REGISTER(0x1B0+(core*1024)) = 1 << core;

	SetDmaWrite(core);

	*SD_DMA_ADDR(core) = (u32)iopaddr;
	*SD_DMA_MODE(core) = 0x10;
	*SD_DMA_SIZE(core) = (size/64)+((size&63)>0);
	*SD_DMA_CHCR(core) = SD_DMA_CS | SD_DMA_START | SD_DMA_DIR_IOP2SPU;

	return 0;
}

Example #3

File: block.c Project: AKuHAK/ps2sdk

s32 BlockTransRead(u8 *iopaddr, u32 size, s32 chan, s16 mode)
{
	u32 i;

	s32 core = chan & 1;

	BlockTransBuff[core] = 0;
	BlockTransSize[core] = size;
	BlockTransAddr[core] = (u32)iopaddr;

	if(*SD_CORE_ATTR(core) & SD_DMA_IN_PROCESS) return -1;
	if(*SD_DMA_CHCR(core) & SD_DMA_START) return -1;

	*SD_CORE_ATTR(core) &= 0xFFCF;

	*SD_A_TSA_HI(core) = 0;
	*SD_A_TSA_LO(core) = ((mode & 0xF00) << 1) + 0x400;

	*U16_REGISTER(0x1AE + (core*1024)) = (mode & 0xF000) >> 11;

	i = 0x4937;

	while(i--);

	*U16_REGISTER(0x1B0+(core*1024)) = 4;

	SetDmaRead(core);

	*SD_DMA_ADDR(core) = (u32)iopaddr;
	*SD_DMA_MODE(core) = 0x10;
	*SD_DMA_SIZE(core) = (size/64)+((size&63)>0);
	*SD_DMA_CHCR(core) = SD_DMA_CS | SD_DMA_START | SD_DMA_DIR_SPU2IOP;


	return 0;
}

Example #4

File: freesd.c Project: AKuHAK2/ps2sdk

int TransInterrupt(void *data)
{
	IntrData *intr = (IntrData*) data;
	s32 dir;
	s32 core;

	dir = ((intr->mode & 0x200) < 1);
	core = intr->mode & 0xFF;

	// Voice Transfer
	if((intr->mode & 0x100) == 0)
	{
		// SD_C_STATX(core)
		// If done elsewise, it doesn't work, havn't figured out why yet.
		volatile u16 *statx = U16_REGISTER(0x344 + (core * 1024));

		if(!(*statx & 0x80))	while(!(*statx & 0x80));

		*SD_CORE_ATTR(core) &= ~SD_CORE_DMA;

		if(*SD_CORE_ATTR(core) & 0x30)	while((*SD_CORE_ATTR(core) & 0x30));

		if(TransIntrHandlers[core])		goto intr_handler;
		if(TransIntrCallbacks[core])	goto IntrCallback;

		VoiceTransComplete[core] = 1;
	}
	else
	{	// Block Transfer
		if(intr->mode & (SD_BLOCK_TRANS_LOOP << 8))
		{
			// Switch buffers
			BlockTransBuff[core] = 1 - BlockTransBuff[core];
			// Setup DMA & send
			*SD_DMA_ADDR(core) = (BlockTransSize[core] * BlockTransBuff[core])+BlockTransAddr[core];
			*SD_DMA_SIZE(core) = (BlockTransSize[core]/64)+((BlockTransSize[core]&63)>0);
			*SD_DMA_CHCR(core) = SD_DMA_START | SD_DMA_CS | dir;
		}
		else
		{
			*SD_CORE_ATTR(core) &= ~SD_CORE_DMA;
			*SD_P_MMIX(core)	&= 0xFF3F;
			*U16_REGISTER(0x1B0 + (core * 1024)) = 0;
		}

		if(TransIntrHandlers[core])
		{
			intr_handler:
			TransIntrHandlers[core](core, intr->data);
		}
		else
		{
			if(TransIntrCallbacks[core])
			{
				IntrCallback:
				TransIntrCallbacks[core](0);
			}
		}
	}

	if(dir == SD_DMA_DIR_SPU2IOP)	FlushDcache();

	return 1;
}