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#ifndef __DMA_EXT_H__
#define __DMA_EXT_H__
#define SRC_STRIDE 0
#define DST_STRIDE 1
#define SEGMENT_SIZE 2
#define NSEGMENTS 3
#define ALLOC 4
#define RESP_STATUS 5
#define ALLOC_GET 1
#define ALLOC_PUT 2
static inline void dma_write_cr(int regnum, unsigned long value)
{
asm volatile ("custom2 0, %[regnum], %[value], 5" ::
[regnum] "r" (regnum), [value] "r" (value));
}
static inline unsigned long dma_read_cr(int regnum)
{
int value;
asm volatile ("custom2 %[value], %[regnum], 0, 4" :
[value] "=r" (value) : [regnum] "r" (regnum));
return value;
}
static inline void dma_transfer(void *dst, void *src)
{
asm volatile ("custom2 0, %[dst], %[src], 0" ::
[dst] "r" (dst), [src] "r" (src));
}
static inline void dma_read_prefetch(void *dst)
{
asm volatile ("custom2 0, %[dst], 0, 2" :: [dst] "r" (dst));
}
static inline void dma_write_prefetch(void *dst)
{
asm volatile ("custom2 0, %[dst], 0, 3" :: [dst] "r" (dst));
}
#endif
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