src/spu/internal/dma/imoc_dma-test_spu.c

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#include <string.h>
#include <stdint.h>
#include <free_align.h>
#include <spu_mfcio.h>

#include <moc.h>
#include <internal/spu/imoc_dma_spu.h>

int IMOC_test_dma(imoc_dma_request* request, int *flag)
    {
    uint32_t ret;
    mfc_write_tag_mask(1 << request->tag_id);
    mfc_write_tag_update(MFC_TAG_UPDATE_IMMEDIATE);
    ret = mfc_read_tag_status();

    if ((ret & (1 << request->tag_id)) == 0) // dma transfer not finished
        *flag = 0;
    else // dma transfer finished
        {
        if (request->remainder != 0) // check if buffer was used and copy back data from there to target
            {
            memcpy(request->target + request->size, request->buffer,
                    request->remainder);
            free(request->buffer);
            }
        mfc_tag_release(request->tag_id);
        *flag = 1;
        }

    return MOC_SUCCESS;
    }

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