*/
#include "psxdma.h"
+#include "gpu.h"
// Dma0/1 in Mdec.c
// Dma3 in CdRom.c
void psxDma4(u32 madr, u32 bcr, u32 chcr) { // SPU
u16 *ptr;
- u32 size;
+ u32 words;
switch (chcr) {
case 0x01000201: //cpu to spu transfer
PSXDMA_LOG("*** DMA4 SPU - mem2spu *** %x addr = %x size = %x\n", chcr, madr, bcr);
#endif
ptr = (u16 *)PSXM(madr);
- if (ptr == NULL) {
+ if (ptr == INVALID_PTR) {
#ifdef CPU_LOG
CPU_LOG("*** DMA4 SPU - mem2spu *** NULL Pointer!!!\n");
#endif
break;
}
- SPU_writeDMAMem(ptr, (bcr >> 16) * (bcr & 0xffff) * 2);
- SPUDMA_INT((bcr >> 16) * (bcr & 0xffff) / 2);
+ words = (bcr >> 16) * (bcr & 0xffff);
+ SPU_writeDMAMem(ptr, words * 2, psxRegs.cycle);
+ HW_DMA4_MADR = SWAPu32(madr + words * 4);
+ SPUDMA_INT(words * 4);
return;
case 0x01000200: //spu to cpu transfer
PSXDMA_LOG("*** DMA4 SPU - spu2mem *** %x addr = %x size = %x\n", chcr, madr, bcr);
#endif
ptr = (u16 *)PSXM(madr);
- if (ptr == NULL) {
+ if (ptr == INVALID_PTR) {
#ifdef CPU_LOG
CPU_LOG("*** DMA4 SPU - spu2mem *** NULL Pointer!!!\n");
#endif
break;
}
- size = (bcr >> 16) * (bcr & 0xffff) * 2;
- SPU_readDMAMem(ptr, size);
- psxCpu->Clear(madr, size);
- break;
+ words = (bcr >> 16) * (bcr & 0xffff);
+ SPU_readDMAMem(ptr, words * 2, psxRegs.cycle);
+ psxCpu->Clear(madr, words);
+
+ HW_DMA4_MADR = SWAPu32(madr + words * 4);
+ SPUDMA_INT(words * 4);
+ return;
-#ifdef PSXDMA_LOG
default:
- PSXDMA_LOG("*** DMA4 SPU - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
+ log_unhandled("*** DMA4 SPU - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
break;
-#endif
}
HW_DMA4_CHCR &= SWAP32(~0x01000000);
// next 32-bit pointer
addr = psxMu32( addr & ~0x3 ) & 0xffffff;
size += 1;
- } while (addr != 0xffffff);
+ } while (!(addr & 0x800000)); // contrary to some documentation, the end-of-linked-list marker is not actually 0xFF'FFFF
+ // any pointer with bit 23 set will do.
return size;
}
void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU
- u32 *ptr;
+ u32 *ptr, madr_next, *madr_next_p;
+ int do_walking;
+ u32 words;
u32 size;
switch (chcr) {
PSXDMA_LOG("*** DMA2 GPU - vram2mem *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
#endif
ptr = (u32 *)PSXM(madr);
- if (ptr == NULL) {
+ if (ptr == INVALID_PTR) {
#ifdef CPU_LOG
CPU_LOG("*** DMA2 GPU - vram2mem *** NULL Pointer!!!\n");
#endif
break;
}
// BA blocks * BS words (word = 32-bits)
- size = (bcr >> 16) * (bcr & 0xffff);
- GPU_readDataMem(ptr, size);
- psxCpu->Clear(madr, size);
+ words = (bcr >> 16) * (bcr & 0xffff);
+ GPU_readDataMem(ptr, words);
+ psxCpu->Clear(madr, words);
+
+ HW_DMA2_MADR = SWAPu32(madr + words * 4);
// already 32-bit word size ((size * 4) / 4)
- GPUDMA_INT(size / 4);
+ GPUDMA_INT(words / 4);
return;
case 0x01000201: // mem2vram
PSXDMA_LOG("*** DMA 2 - GPU mem2vram *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
#endif
ptr = (u32 *)PSXM(madr);
- if (ptr == NULL) {
+ if (ptr == INVALID_PTR) {
#ifdef CPU_LOG
CPU_LOG("*** DMA2 GPU - mem2vram *** NULL Pointer!!!\n");
#endif
break;
}
// BA blocks * BS words (word = 32-bits)
- size = (bcr >> 16) * (bcr & 0xffff);
- GPU_writeDataMem(ptr, size);
+ words = (bcr >> 16) * (bcr & 0xffff);
+ GPU_writeDataMem(ptr, words);
+
+ HW_DMA2_MADR = SWAPu32(madr + words * 4);
// already 32-bit word size ((size * 4) / 4)
- GPUDMA_INT(size / 4);
+ GPUDMA_INT(words / 4);
return;
case 0x01000401: // dma chain
#ifdef PSXDMA_LOG
PSXDMA_LOG("*** DMA 2 - GPU dma chain *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
#endif
+ // when not emulating walking progress, end immediately
+ madr_next = 0xffffff;
- size = GPU_dmaChain((u32 *)psxM, madr & 0x1fffff);
+ do_walking = Config.GpuListWalking;
+ if (do_walking < 0)
+ do_walking = Config.hacks.gpu_slow_list_walking;
+ madr_next_p = do_walking ? &madr_next : NULL;
+
+ size = GPU_dmaChain((u32 *)psxM, madr & 0x1fffff, madr_next_p);
if ((int)size <= 0)
size = gpuDmaChainSize(madr);
-
+
+ HW_GPU_STATUS &= SWAP32(~PSXGPU_nBUSY);
+ HW_DMA2_MADR = SWAPu32(madr_next);
+
// Tekken 3 = use 1.0 only (not 1.5x)
// Einhander = parse linked list in pieces (todo)
- // Final Fantasy 4 = internal vram time (todo)
// Rebel Assault 2 = parse linked list in pieces (todo)
- // Vampire Hunter D = allow edits to linked list (todo)
GPUDMA_INT(size);
return;
-#ifdef PSXDMA_LOG
default:
- PSXDMA_LOG("*** DMA 2 - GPU unknown *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
+ log_unhandled("*** DMA 2 - GPU unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
break;
-#endif
}
HW_DMA2_CHCR &= SWAP32(~0x01000000);
}
void gpuInterrupt() {
+ if (HW_DMA2_CHCR == SWAP32(0x01000401) && !(HW_DMA2_MADR & SWAP32(0x800000)))
+ {
+ u32 size, madr_next = 0xffffff;
+ size = GPU_dmaChain((u32 *)psxM, HW_DMA2_MADR & 0x1fffff, &madr_next);
+ HW_DMA2_MADR = SWAPu32(madr_next);
+ GPUDMA_INT(size);
+ return;
+ }
if (HW_DMA2_CHCR & SWAP32(0x01000000))
{
HW_DMA2_CHCR &= SWAP32(~0x01000000);
DMA_INTERRUPT(2);
}
+ HW_GPU_STATUS |= SWAP32(PSXGPU_nBUSY); // GPU no longer busy
}
void psxDma6(u32 madr, u32 bcr, u32 chcr) {
- u32 size;
+ u32 words;
u32 *mem = (u32 *)PSXM(madr);
#ifdef PSXDMA_LOG
#endif
if (chcr == 0x11000002) {
- if (mem == NULL) {
+ if (mem == INVALID_PTR) {
#ifdef CPU_LOG
CPU_LOG("*** DMA6 OT *** NULL Pointer!!!\n");
#endif
}
// already 32-bit size
- size = bcr;
+ words = bcr;
while (bcr--) {
*mem-- = SWAP32((madr - 4) & 0xffffff);
madr -= 4;
}
- mem++; *mem = 0xffffff;
+ *++mem = SWAP32(0xffffff);
- GPUOTCDMA_INT(size);
+ //GPUOTCDMA_INT(size);
+ // halted
+ psxRegs.cycle += words;
+ GPUOTCDMA_INT(16);
return;
}
-#ifdef PSXDMA_LOG
else {
// Unknown option
- PSXDMA_LOG("*** DMA6 OT - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
+ log_unhandled("*** DMA6 OT - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
}
-#endif
HW_DMA6_CHCR &= SWAP32(~0x01000000);
DMA_INTERRUPT(6);
notaz.gp2x.de / pcsx_rearmed.git / blobdiff