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ef79bbde P |
1 | /***************************************************************************\r |
2 | dma.c - description\r | |
3 | -------------------\r | |
4 | begin : Wed May 15 2002\r | |
5 | copyright : (C) 2002 by Pete Bernert\r | |
6 | email : BlackDove@addcom.de\r | |
7 | ***************************************************************************/\r | |
8 | /***************************************************************************\r | |
9 | * *\r | |
10 | * This program is free software; you can redistribute it and/or modify *\r | |
11 | * it under the terms of the GNU General Public License as published by *\r | |
12 | * the Free Software Foundation; either version 2 of the License, or *\r | |
13 | * (at your option) any later version. See also the license.txt file for *\r | |
14 | * additional informations. *\r | |
15 | * *\r | |
16 | ***************************************************************************/\r | |
17 | \r | |
18 | #include "stdafx.h"\r | |
19 | \r | |
20 | #define _IN_DMA\r | |
21 | \r | |
22 | #include "externals.h"\r | |
54604e03 | 23 | #include "registers.h"\r |
ef79bbde P |
24 | \r |
25 | ////////////////////////////////////////////////////////////////////////\r | |
26 | // READ DMA (one value)\r | |
27 | ////////////////////////////////////////////////////////////////////////\r | |
28 | \r | |
29 | unsigned short CALLBACK SPUreadDMA(void)\r | |
30 | {\r | |
5514a050 | 31 | unsigned short s = *(unsigned short *)(spu.spuMemC + spu.spuAddr);\r |
54604e03 | 32 | check_irq_io(spu.spuAddr);\r |
5514a050 | 33 | spu.spuAddr += 2;\r |
34 | spu.spuAddr &= 0x7fffe;\r | |
ef79bbde | 35 | \r |
ef79bbde P |
36 | return s;\r |
37 | }\r | |
38 | \r | |
39 | ////////////////////////////////////////////////////////////////////////\r | |
40 | // READ DMA (many values)\r | |
41 | ////////////////////////////////////////////////////////////////////////\r | |
42 | \r | |
650adfd2 | 43 | void CALLBACK SPUreadDMAMem(unsigned short *pusPSXMem, int iSize,\r |
44 | unsigned int cycles)\r | |
ef79bbde | 45 | {\r |
54604e03 | 46 | unsigned int addr = spu.spuAddr, irq_addr = regAreaGet(H_SPUirqAddr) << 3;\r |
47 | int i, irq;\r | |
ef79bbde | 48 | \r |
63a4f6b6 | 49 | do_samples_if_needed(cycles, 1);\r |
54604e03 | 50 | irq = addr <= irq_addr && irq_addr < addr + iSize*2;\r |
51 | \r | |
52 | for(i = 0; i < iSize; i++)\r | |
53 | {\r | |
54 | *pusPSXMem++ = *(unsigned short *)(spu.spuMemC + addr);\r | |
55 | addr += 2;\r | |
56 | addr &= 0x7fffe;\r | |
57 | }\r | |
58 | if (irq && (spu.spuCtrl & CTRL_IRQ))\r | |
59 | log_unhandled("rdma spu irq: %x/%x+%x\n", irq_addr, spu.spuAddr, iSize * 2);\r | |
60 | spu.spuAddr = addr;\r | |
ef79bbde P |
61 | }\r |
62 | \r | |
63 | ////////////////////////////////////////////////////////////////////////\r | |
64 | ////////////////////////////////////////////////////////////////////////\r | |
65 | ////////////////////////////////////////////////////////////////////////\r | |
66 | \r | |
ef79bbde P |
67 | ////////////////////////////////////////////////////////////////////////\r |
68 | // WRITE DMA (one value)\r | |
69 | ////////////////////////////////////////////////////////////////////////\r | |
70 | \r | |
71 | void CALLBACK SPUwriteDMA(unsigned short val)\r | |
72 | {\r | |
5514a050 | 73 | *(unsigned short *)(spu.spuMemC + spu.spuAddr) = val;\r |
ef79bbde | 74 | \r |
54604e03 | 75 | check_irq_io(spu.spuAddr);\r |
5514a050 | 76 | spu.spuAddr += 2;\r |
77 | spu.spuAddr &= 0x7fffe;\r | |
0c1151fe | 78 | spu.bMemDirty = 1;\r |
ef79bbde P |
79 | }\r |
80 | \r | |
81 | ////////////////////////////////////////////////////////////////////////\r | |
82 | // WRITE DMA (many values)\r | |
83 | ////////////////////////////////////////////////////////////////////////\r | |
84 | \r | |
650adfd2 | 85 | void CALLBACK SPUwriteDMAMem(unsigned short *pusPSXMem, int iSize,\r |
86 | unsigned int cycles)\r | |
ef79bbde | 87 | {\r |
54604e03 | 88 | unsigned int addr = spu.spuAddr, irq_addr = regAreaGet(H_SPUirqAddr) << 3;\r |
89 | int i, irq;\r | |
fb552464 | 90 | \r |
63a4f6b6 | 91 | do_samples_if_needed(cycles, 1);\r |
0c1151fe | 92 | spu.bMemDirty = 1;\r |
54604e03 | 93 | irq = addr <= irq_addr && irq_addr < addr + iSize*2;\r |
94 | \r | |
95 | if (addr + iSize*2 < 0x80000)\r | |
96 | {\r | |
97 | memcpy(spu.spuMemC + addr, pusPSXMem, iSize*2);\r | |
98 | addr += iSize*2;\r | |
99 | }\r | |
100 | else\r | |
101 | {\r | |
102 | irq |= irq_addr < ((addr + iSize*2) & 0x7ffff);\r | |
103 | for (i = 0; i < iSize; i++)\r | |
ef79bbde | 104 | {\r |
54604e03 | 105 | *(unsigned short *)(spu.spuMemC + addr) = *pusPSXMem++;\r |
106 | addr += 2;\r | |
107 | addr &= 0x7fffe;\r | |
ef79bbde | 108 | }\r |
54604e03 | 109 | }\r |
110 | if (irq && (spu.spuCtrl & CTRL_IRQ)) // unhandled because need to implement delay\r | |
111 | log_unhandled("wdma spu irq: %x/%x+%x\n", irq_addr, spu.spuAddr, iSize * 2);\r | |
112 | spu.spuAddr = addr;\r | |
ef79bbde P |
113 | }\r |
114 | \r | |
115 | ////////////////////////////////////////////////////////////////////////\r |