pokediamond/arm9/lib/include/GX_dma.h

#ifndef GUARD_GX_DMA_H
#define GUARD_GX_DMA_H

#define GX_DMA_NOT_USE -1
#define GX_CPU_FASTER32_SIZE 0x30
#define GX_CPU_FASTER16_SIZE 0x1C

static inline void GXi_DmaCopy32(u32 dmaNo, const void *src, void *dest, u32 size)
{
    if (dmaNo != GX_DMA_NOT_USE && size > GX_CPU_FASTER32_SIZE)
    {
        MI_DmaCopy32(dmaNo, src, dest, size);
    }
    else
    {
        MIi_CpuCopy32(src, dest, size);
    }
}

static inline void GXi_DmaCopy16(u32 dmaNo, const void *src, void *dest, u32 size)
{
    if (dmaNo != GX_DMA_NOT_USE && size > GX_CPU_FASTER16_SIZE)
    {
        MI_DmaCopy16(dmaNo, src, dest, size);
    }
    else
    {
        MIi_CpuCopy16(src, dest, size);
    }
}

static inline void GXi_DmaCopy32Async(u32 dmaNo, const void *src, void *dest, u32 size,
                                      MIDmaCallback callback, void *arg)
{
    if (dmaNo != GX_DMA_NOT_USE)
    {
        MI_DmaCopy32Async(dmaNo, src, dest, size, callback, arg);
    }
    else
    {
        MIi_CpuCopy32(src, dest, size);
    }
}

static inline void GXi_WaitDma(u32 dmaNo)
{
    if (dmaNo != GX_DMA_NOT_USE)
    {
        MI_WaitDma(dmaNo);
    }
}

#endif //GUARD_GX_DMA_H