Commit | Line | Data |
---|---|---|
ef79bbde P |
1 | /*************************************************************************** |
2 | * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team * | |
3 | * * | |
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. * | |
8 | * * | |
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. * | |
13 | * * | |
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 | ***************************************************************************/ | |
19 | ||
20 | /* | |
21 | * Handles PSX DMA functions. | |
22 | */ | |
23 | ||
24 | #include "psxdma.h" | |
25 | ||
26 | // Dma0/1 in Mdec.c | |
27 | // Dma3 in CdRom.c | |
28 | ||
29 | void spuInterrupt() { | |
30 | HW_DMA4_CHCR &= SWAP32(~0x01000000); | |
31 | DMA_INTERRUPT(4); | |
32 | } | |
33 | ||
34 | void psxDma4(u32 madr, u32 bcr, u32 chcr) { // SPU | |
35 | u16 *ptr; | |
36 | u32 size; | |
37 | ||
38 | switch (chcr) { | |
39 | case 0x01000201: //cpu to spu transfer | |
40 | #ifdef PSXDMA_LOG | |
41 | PSXDMA_LOG("*** DMA4 SPU - mem2spu *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
42 | #endif | |
43 | ptr = (u16 *)PSXM(madr); | |
44 | if (ptr == NULL) { | |
45 | #ifdef CPU_LOG | |
46 | CPU_LOG("*** DMA4 SPU - mem2spu *** NULL Pointer!!!\n"); | |
47 | #endif | |
48 | break; | |
49 | } | |
50 | SPU_writeDMAMem(ptr, (bcr >> 16) * (bcr & 0xffff) * 2); | |
51 | SPUDMA_INT((bcr >> 16) * (bcr & 0xffff) / 2); | |
52 | return; | |
53 | ||
54 | case 0x01000200: //spu to cpu transfer | |
55 | #ifdef PSXDMA_LOG | |
56 | PSXDMA_LOG("*** DMA4 SPU - spu2mem *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
57 | #endif | |
58 | ptr = (u16 *)PSXM(madr); | |
59 | if (ptr == NULL) { | |
60 | #ifdef CPU_LOG | |
61 | CPU_LOG("*** DMA4 SPU - spu2mem *** NULL Pointer!!!\n"); | |
62 | #endif | |
63 | break; | |
64 | } | |
65 | size = (bcr >> 16) * (bcr & 0xffff) * 2; | |
66 | SPU_readDMAMem(ptr, size); | |
67 | psxCpu->Clear(madr, size); | |
68 | break; | |
69 | ||
70 | #ifdef PSXDMA_LOG | |
71 | default: | |
72 | PSXDMA_LOG("*** DMA4 SPU - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
73 | break; | |
74 | #endif | |
75 | } | |
76 | ||
77 | HW_DMA4_CHCR &= SWAP32(~0x01000000); | |
78 | DMA_INTERRUPT(4); | |
79 | } | |
80 | ||
81 | void psxDma2(u32 madr, u32 bcr, u32 chcr) { // GPU | |
82 | u32 *ptr; | |
83 | u32 size; | |
84 | ||
85 | switch(chcr) { | |
86 | case 0x01000200: // vram2mem | |
87 | #ifdef PSXDMA_LOG | |
88 | PSXDMA_LOG("*** DMA2 GPU - vram2mem *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
89 | #endif | |
90 | ptr = (u32 *)PSXM(madr); | |
91 | if (ptr == NULL) { | |
92 | #ifdef CPU_LOG | |
93 | CPU_LOG("*** DMA2 GPU - vram2mem *** NULL Pointer!!!\n"); | |
94 | #endif | |
95 | break; | |
96 | } | |
97 | size = (bcr >> 16) * (bcr & 0xffff); | |
98 | GPU_readDataMem(ptr, size); | |
99 | psxCpu->Clear(madr, size); | |
100 | break; | |
101 | ||
102 | case 0x01000201: // mem2vram | |
103 | #ifdef PSXDMA_LOG | |
104 | PSXDMA_LOG("*** DMA 2 - GPU mem2vram *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
105 | #endif | |
106 | ptr = (u32 *)PSXM(madr); | |
107 | if (ptr == NULL) { | |
108 | #ifdef CPU_LOG | |
109 | CPU_LOG("*** DMA2 GPU - mem2vram *** NULL Pointer!!!\n"); | |
110 | #endif | |
111 | break; | |
112 | } | |
113 | size = (bcr >> 16) * (bcr & 0xffff); | |
114 | GPU_writeDataMem(ptr, size); | |
115 | GPUDMA_INT(size / 4); | |
116 | return; | |
117 | ||
118 | case 0x01000401: // dma chain | |
119 | #ifdef PSXDMA_LOG | |
120 | PSXDMA_LOG("*** DMA 2 - GPU dma chain *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
121 | #endif | |
122 | GPU_dmaChain((u32 *)psxM, madr & 0x1fffff); | |
123 | break; | |
124 | ||
125 | #ifdef PSXDMA_LOG | |
126 | default: | |
127 | PSXDMA_LOG("*** DMA 2 - GPU unknown *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
128 | break; | |
129 | #endif | |
130 | } | |
131 | ||
132 | HW_DMA2_CHCR &= SWAP32(~0x01000000); | |
133 | DMA_INTERRUPT(2); | |
134 | } | |
135 | ||
136 | void gpuInterrupt() { | |
137 | HW_DMA2_CHCR &= SWAP32(~0x01000000); | |
138 | DMA_INTERRUPT(2); | |
139 | } | |
140 | ||
141 | void psxDma6(u32 madr, u32 bcr, u32 chcr) { | |
142 | u32 *mem = (u32 *)PSXM(madr); | |
143 | ||
144 | #ifdef PSXDMA_LOG | |
145 | PSXDMA_LOG("*** DMA6 OT *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
146 | #endif | |
147 | ||
148 | if (chcr == 0x11000002) { | |
149 | if (mem == NULL) { | |
150 | #ifdef CPU_LOG | |
151 | CPU_LOG("*** DMA6 OT *** NULL Pointer!!!\n"); | |
152 | #endif | |
153 | HW_DMA6_CHCR &= SWAP32(~0x01000000); | |
154 | DMA_INTERRUPT(6); | |
155 | return; | |
156 | } | |
157 | ||
158 | while (bcr--) { | |
159 | *mem-- = SWAP32((madr - 4) & 0xffffff); | |
160 | madr -= 4; | |
161 | } | |
162 | mem++; *mem = 0xffffff; | |
163 | } | |
164 | #ifdef PSXDMA_LOG | |
165 | else { | |
166 | // Unknown option | |
167 | PSXDMA_LOG("*** DMA6 OT - unknown *** %x addr = %x size = %x\n", chcr, madr, bcr); | |
168 | } | |
169 | #endif | |
170 | ||
171 | HW_DMA6_CHCR &= SWAP32(~0x01000000); | |
172 | DMA_INTERRUPT(6); | |
173 | } | |
174 |