diff options
Diffstat (limited to 'include/dma3.h')
| -rw-r--r-- | include/dma3.h | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/include/dma3.h b/include/dma3.h index fcd7bae43..381e1e322 100644 --- a/include/dma3.h +++ b/include/dma3.h @@ -3,10 +3,55 @@ #include "global.h" +// Maximum amount of data we will transfer in one operation +#define MAX_DMA_BLOCK_SIZE 0x1000 + +#define Dma3CopyLarge_(src, dest, size, bit) \ +{ \ + const void *_src = src; \ + void *_dest = dest; \ + u32 _size = size; \ + while (1) \ + { \ + if (_size <= MAX_DMA_BLOCK_SIZE) \ + { \ + DmaCopy##bit(3, _src, _dest, _size); \ + break; \ + } \ + DmaCopy##bit(3, _src, _dest, MAX_DMA_BLOCK_SIZE); \ + _src += MAX_DMA_BLOCK_SIZE; \ + _dest += MAX_DMA_BLOCK_SIZE; \ + _size -= MAX_DMA_BLOCK_SIZE; \ + } \ +} + +#define Dma3CopyLarge16_(src, dest, size) Dma3CopyLarge_(src, dest, size, 16) +#define Dma3CopyLarge32_(src, dest, size) Dma3CopyLarge_(src, dest, size, 32) + +#define Dma3FillLarge_(value, dest, size, bit) \ +{ \ + void *_dest = dest; \ + u32 _size = size; \ + while (1) \ + { \ + if (_size <= MAX_DMA_BLOCK_SIZE) \ + { \ + DmaFill##bit(3, value, _dest, _size); \ + break; \ + } \ + DmaFill##bit(3, value, _dest, MAX_DMA_BLOCK_SIZE); \ + _dest += MAX_DMA_BLOCK_SIZE; \ + _size -= MAX_DMA_BLOCK_SIZE; \ + } \ +} + +#define Dma3FillLarge16_(value, dest, size) Dma3FillLarge_(value, dest, size, 16) +#define Dma3FillLarge32_(value, dest, size) Dma3FillLarge_(value, dest, size, 32) + void ClearDma3Requests(void); void ProcessDma3Requests(void); -int RequestDma3Copy(const void *src, void *dest, u16 size, u8 mode); -int RequestDma3Fill(s32 value, void *dest, u16 size, u8 mode); -int CheckForSpaceForDma3Request(s16 index); +s16 RequestDma3Copy(const void *src, void *dest, u16 size, u8 mode); +s16 RequestDma3Fill(s32 value, void *dest, u16 size, u8 mode); +s16 CheckForSpaceForDma3Request(s16 index); #endif // GUARD_DMA3_H |