gte_neon: hook into recompiler

[pcsx_rearmed.git] / libpcsxcore / psxdma.c

diff --git a/libpcsxcore/psxdma.c b/libpcsxcore/psxdma.c
index f59f268..1274d93 100644 (file)
--- a/libpcsxcore/psxdma.c
+++ b/libpcsxcore/psxdma.c
@@ -78,14 +78,54 @@ void psxDma4(u32 madr, u32 bcr, u32 chcr) { // SPU
        DMA_INTERRUPT(4);
 }
 
+// Taken from PEOPS SOFTGPU
+static inline boolean CheckForEndlessLoop(u32 laddr, u32 *lUsedAddr) {
+       if (laddr == lUsedAddr[1]) return TRUE;
+       if (laddr == lUsedAddr[2]) return TRUE;
+
+       if (laddr < lUsedAddr[0]) lUsedAddr[1] = laddr;
+       else lUsedAddr[2] = laddr;
+
+       lUsedAddr[0] = laddr;
+
+       return FALSE;
+}
+
+static u32 gpuDmaChainSize(u32 addr) {
+       u32 size;
+       u32 DMACommandCounter = 0;
+       u32 lUsedAddr[3];
+
+       lUsedAddr[0] = lUsedAddr[1] = lUsedAddr[2] = 0xffffff;
+
+       // initial linked list ptr (word)
+       size = 1;
+
+       do {
+               addr &= 0x1ffffc;
+
+               if (DMACommandCounter++ > 2000000) break;
+               if (CheckForEndlessLoop(addr, lUsedAddr)) break;
+
+               // # 32-bit blocks to transfer
+               size += psxMu8( addr + 3 );
+
+               // next 32-bit pointer
+               addr = psxMu32( addr & ~0x3 ) & 0xffffff;
+               size += 1;
+       } while (addr != 0xffffff);
+
+       return size;
+}
+
 void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU
        u32 *ptr;
        u32 size;
 
-       switch(chcr) {
+       switch (chcr) {
                case 0x01000200: // vram2mem
 #ifdef PSXDMA_LOG
-                       PSXDMA_LOG("*** DMA2 GPU - vram2mem *** %x addr = %x size = %x\n", chcr, madr, bcr);
+                       PSXDMA_LOG("*** DMA2 GPU - vram2mem *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
 #endif
                        ptr = (u32 *)PSXM(madr);
                        if (ptr == NULL) {
@@ -94,14 +134,18 @@ void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU
 #endif
                                break;
                        }
+                       // BA blocks * BS words (word = 32-bits)
                        size = (bcr >> 16) * (bcr & 0xffff);
                        GPU_readDataMem(ptr, size);
                        psxCpu->Clear(madr, size);
-                       break;
+
+                       // already 32-bit word size ((size * 4) / 4)
+                       GPUDMA_INT(size / 4);
+                       return;
 
                case 0x01000201: // mem2vram
 #ifdef PSXDMA_LOG
-                       PSXDMA_LOG("*** DMA 2 - GPU mem2vram *** %x addr = %x size = %x\n", chcr, madr, bcr);
+                       PSXDMA_LOG("*** DMA 2 - GPU mem2vram *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
 #endif
                        ptr = (u32 *)PSXM(madr);
                        if (ptr == NULL) {
@@ -110,21 +154,34 @@ void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU
 #endif
                                break;
                        }
+                       // BA blocks * BS words (word = 32-bits)
                        size = (bcr >> 16) * (bcr & 0xffff);
                        GPU_writeDataMem(ptr, size);
+
+                       // already 32-bit word size ((size * 4) / 4)
                        GPUDMA_INT(size / 4);
                        return;
 
                case 0x01000401: // dma chain
 #ifdef PSXDMA_LOG
-                       PSXDMA_LOG("*** DMA 2 - GPU dma chain *** %x addr = %x size = %x\n", chcr, madr, bcr);
+                       PSXDMA_LOG("*** DMA 2 - GPU dma chain *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
 #endif
+
+                       size = gpuDmaChainSize(madr);
                        GPU_dmaChain((u32 *)psxM, madr & 0x1fffff);
-                       break;
+                       
+                       // 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 *** %x addr = %x size = %x\n", chcr, madr, bcr);
+                       PSXDMA_LOG("*** DMA 2 - GPU unknown *** %lx addr = %lx size = %lx\n", chcr, madr, bcr);
                        break;
 #endif
        }
@@ -139,6 +196,7 @@ void gpuInterrupt() {
 }
 
 void psxDma6(u32 madr, u32 bcr, u32 chcr) {
+       u32 size;
        u32 *mem = (u32 *)PSXM(madr);
 
 #ifdef PSXDMA_LOG
@@ -155,11 +213,17 @@ void psxDma6(u32 madr, u32 bcr, u32 chcr) {
                        return;
                }
 
+               // already 32-bit size
+               size = bcr;
+
                while (bcr--) {
                        *mem-- = SWAP32((madr - 4) & 0xffffff);
                        madr -= 4;
                }
                mem++; *mem = 0xffffff;
+
+               GPUOTCDMA_INT(size);
+               return;
        }
 #ifdef PSXDMA_LOG
        else {
@@ -172,3 +236,8 @@ void psxDma6(u32 madr, u32 bcr, u32 chcr) {
        DMA_INTERRUPT(6);
 }
 
+void gpuotcInterrupt()
+{
+       HW_DMA6_CHCR &= SWAP32(~0x01000000);
+       DMA_INTERRUPT(6);
+}