blob: 0344fbacf4695cf13720c0248892a7313078849c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
Copyright 2016-2020 Arisotura
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#ifndef DMA_H
#define DMA_H
#include "types.h"
class DMA
{
public:
DMA(u32 cpu, u32 num);
~DMA();
void Reset();
void DoSavestate(Savestate* file);
void WriteCnt(u32 val);
void Start();
void Run();
void Run9();
void Run7();
bool IsInMode(u32 mode)
{
return ((mode == StartMode) && (Cnt & 0x80000000));
}
bool IsRunning() { return Running!=0; }
void StartIfNeeded(u32 mode)
{
if ((mode == StartMode) && (Cnt & 0x80000000))
Start();
}
void StopIfNeeded(u32 mode)
{
if (mode == StartMode)
Cnt &= ~0x80000000;
}
void StallIfRunning()
{
if (Executing) Stall = true;
}
u32 SrcAddr;
u32 DstAddr;
u32 Cnt;
private:
u32 CPU, Num;
u32 StartMode;
u32 CurSrcAddr;
u32 CurDstAddr;
u32 RemCount;
u32 IterCount;
u32 SrcAddrInc;
u32 DstAddrInc;
u32 CountMask;
u32 Running;
bool InProgress;
bool Executing;
bool Stall;
bool IsGXFIFODMA;
u16 (*BusRead16)(u32 addr);
u32 (*BusRead32)(u32 addr);
void (*BusWrite16)(u32 addr, u16 val);
void (*BusWrite32)(u32 addr, u32 val);
};
#endif
|