src/ppu/internal/dma/imoc_dma-test_ppu.c

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

#include <moc.h>
#include <internal/ppu/imoc_core_ppu.h>
#include <internal/ppu/imoc_dma_ppu.h>

int IMOC_test_dma(imoc_dma_request* request, int *flag)
    {
    uint32_t dmastatus;
    int err;
    err = spe_mfcio_tag_status_read(moc_spu_thread_list[request->dest
            - moc_ppu_thread_count].speid, 0, SPE_TAG_IMMEDIATE, &dmastatus);
    if (err)
        return MOC_ERR_INTERN;

    if (dmastatus == (1 << request->tag_id)) // 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_align(request->buffer);
            }
        *flag = 1;
        moc_tag_release(request->dest - moc_ppu_thread_count, request->tag_id);
        }

    return MOC_SUCCESS;
    }

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