6 void dma_copy32(int channel, void *dst, void *src, int words, unsigned int flags);
7 void dma_copy16(int channel, void *dst, void *src, int halfwords, unsigned int flags);
9 void dma_fill32(int channel, void *dst, uint32_t val, int words);
10 void dma_fill16(int channel, void *dst, uint16_t val, int halfwords);