1 /***************************************************************************
2 * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. *
18 ***************************************************************************/
21 * Handles PSX DMA functions.
30 HW_DMA4_CHCR &= SWAP32(~0x01000000);
34 void psxDma4(u32 madr, u32 bcr, u32 chcr) { // SPU
39 case 0x01000201: //cpu to spu transfer
41 PSXDMA_LOG("*** DMA4 SPU - mem2spu *** %x addr = %x size = %x\n", chcr, madr, bcr);
43 ptr = (u16 *)PSXM(madr);
46 CPU_LOG("*** DMA4 SPU - mem2spu *** NULL Pointer!!!\n");
50 SPU_writeDMAMem(ptr, (bcr >> 16) * (bcr & 0xffff) * 2);
51 SPUDMA_INT((bcr >> 16) * (bcr & 0xffff) / 2);
54 case 0x01000200: //spu to cpu transfer
56 PSXDMA_LOG("*** DMA4 SPU - spu2mem *** %x addr = %x size = %x\n", chcr, madr, bcr);
58 ptr = (u16 *)PSXM(madr);
61 CPU_LOG("*** DMA4 SPU - spu2mem *** NULL Pointer!!!\n");
65 size = (bcr >> 16) * (bcr & 0xffff) * 2;
66 SPU_readDMAMem(ptr, size);
67 psxCpu->Clear(madr, size);
72 PSXDMA_LOG("*** DMA4 SPU - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
77 HW_DMA4_CHCR &= SWAP32(~0x01000000);
81 void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU
86 case 0x01000200: // vram2mem
88 PSXDMA_LOG("*** DMA2 GPU - vram2mem *** %x addr = %x size = %x\n", chcr, madr, bcr);
90 ptr = (u32 *)PSXM(madr);
93 CPU_LOG("*** DMA2 GPU - vram2mem *** NULL Pointer!!!\n");
97 size = (bcr >> 16) * (bcr & 0xffff);
98 GPU_readDataMem(ptr, size);
99 psxCpu->Clear(madr, size);
102 case 0x01000201: // mem2vram
104 PSXDMA_LOG("*** DMA 2 - GPU mem2vram *** %x addr = %x size = %x\n", chcr, madr, bcr);
106 ptr = (u32 *)PSXM(madr);
109 CPU_LOG("*** DMA2 GPU - mem2vram *** NULL Pointer!!!\n");
113 size = (bcr >> 16) * (bcr & 0xffff);
114 GPU_writeDataMem(ptr, size);
115 GPUDMA_INT(size / 4);
118 case 0x01000401: // dma chain
120 PSXDMA_LOG("*** DMA 2 - GPU dma chain *** %x addr = %x size = %x\n", chcr, madr, bcr);
122 GPU_dmaChain((u32 *)psxM, madr & 0x1fffff);
127 PSXDMA_LOG("*** DMA 2 - GPU unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
132 HW_DMA2_CHCR &= SWAP32(~0x01000000);
136 void gpuInterrupt() {
137 HW_DMA2_CHCR &= SWAP32(~0x01000000);
141 void psxDma6(u32 madr, u32 bcr, u32 chcr) {
142 u32 *mem = (u32 *)PSXM(madr);
145 PSXDMA_LOG("*** DMA6 OT *** %x addr = %x size = %x\n", chcr, madr, bcr);
148 if (chcr == 0x11000002) {
151 CPU_LOG("*** DMA6 OT *** NULL Pointer!!!\n");
153 HW_DMA6_CHCR &= SWAP32(~0x01000000);
159 *mem-- = SWAP32((madr - 4) & 0xffffff);
162 mem++; *mem = 0xffffff;
167 PSXDMA_LOG("*** DMA6 OT - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr);
171 HW_DMA6_CHCR &= SWAP32(~0x01000000);