1 /*---------------------------------------------------------------------------*
2 Project: TwlSDK - GX -
3 File: gxdma.h
4
5 Copyright 2003-2008 Nintendo. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain
8 proprietary information of Nintendo of America Inc. and/or Nintendo
9 Company Ltd., and are protected by Federal copyright law. They may
10 not be disclosed to third parties or copied or duplicated in any form,
11 in whole or in part, without the prior written consent of Nintendo.
12
13 $Date:: 2008-09-17#$
14 $Rev: 8556 $
15 $Author: okubata_ryoma $
16 *---------------------------------------------------------------------------*/
17
18 #ifndef NITRO_GXDMA_H_
19 #define NITRO_GXDMA_H_
20
21 #include <nitro/gx/gx.h>
22 #include <nitro/mi.h>
23
24 #ifdef SDK_TWL
25 #include <twl/mi/common/dma.h>
26 #endif
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 static void GXi_DmaCopy32(u32 dmaNo, const void *src, void *dest, u32 size);
33 static void GXi_DmaCopy16(u32 dmaNo, const void *src, void *dest, u32 size);
34 static void GXi_DmaCopy32Async(u32 dmaNo, const void *src, void *dest, u32 size,
35 MIDmaCallback callback, void *arg);
36 static void GXi_WaitDma(u32 dmaNo);
37
38 #define GX_CPU_FASTER32_SIZE 48
39 #define GX_CPU_FASTER16_SIZE 28
40
41 //---------------------------------------------------------------------------
42 // inline functions.
43 //---------------------------------------------------------------------------
44
GXi_DmaCopy32(u32 dmaNo,const void * src,void * dest,u32 size)45 static inline void GXi_DmaCopy32(u32 dmaNo, const void *src, void *dest, u32 size)
46 {
47 if (dmaNo != GX_DMA_NOT_USE && size > GX_CPU_FASTER32_SIZE)
48 {
49 #ifdef SDK_TWL
50 if (dmaNo > 3)
51 {
52 MI_NDmaCopy(dmaNo-4, src, dest, size);
53 }
54 else
55 #endif
56 {
57 MI_DmaCopy32(dmaNo, src, dest, size);
58 }
59 }
60 else
61 {
62 MI_CpuCopy32(src, dest, size);
63 }
64 }
65
GXi_DmaCopy16(u32 dmaNo,const void * src,void * dest,u32 size)66 static inline void GXi_DmaCopy16(u32 dmaNo, const void *src, void *dest, u32 size)
67 {
68 if (dmaNo != GX_DMA_NOT_USE && size > GX_CPU_FASTER16_SIZE)
69 {
70 #ifdef SDK_TWL
71 if (dmaNo > 3)
72 {
73 if ( (((u32)src | (u32)dest | (u32)size) & 3) == 0 )
74 {
75 MI_NDmaCopy(dmaNo-4, src, dest, size);
76 }
77 else
78 {
79 MI_CpuCopy16(src, dest, size);
80 }
81 }
82 else
83 #endif
84 {
85 MI_DmaCopy16(dmaNo, src, dest, size);
86 }
87 }
88 else
89 {
90 MI_CpuCopy16(src, dest, size);
91 }
92 }
93
GXi_DmaCopy32Async(u32 dmaNo,const void * src,void * dest,u32 size,MIDmaCallback callback,void * arg)94 static inline void GXi_DmaCopy32Async(u32 dmaNo, const void *src, void *dest, u32 size,
95 MIDmaCallback callback, void *arg)
96 {
97 if (dmaNo != GX_DMA_NOT_USE)
98 {
99 #ifdef SDK_TWL
100 if (dmaNo > 3)
101 {
102 MI_NDmaCopyAsync(dmaNo-4, src, dest, size, callback, arg);
103 }
104 else
105 #endif
106 {
107 MI_DmaCopy32Async(dmaNo, src, dest, size, callback, arg);
108 }
109 }
110 else
111 {
112 MI_CpuCopy32(src, dest, size);
113 }
114 }
115
GXi_WaitDma(u32 dmaNo)116 static inline void GXi_WaitDma(u32 dmaNo)
117 {
118 if (dmaNo != GX_DMA_NOT_USE)
119 {
120 #ifdef SDK_TWL
121 if (dmaNo > 3)
122 {
123 MI_WaitNDma(dmaNo-4);
124 }
125 else
126 #endif
127 {
128 MI_WaitDma(dmaNo);
129 }
130 }
131 }
132
133
134 #ifdef __cplusplus
135 } /* extern "C" */
136 #endif
137
138 #endif // NITRO_GXDMA_H_
139