Lines Matching defs:fifo
7 int at91pdc_alloc_fifo(bus_dma_tag_t dmat, at91pdc_fifo_t *fifo, int size,
15 memset(fifo, 0, sizeof(*fifo));
21 &fifo->f_dmamap);
34 err = bus_dmamem_map(dmat, &segs, 1, size, &fifo->f_buf,
42 err = bus_dmamap_load(dmat, fifo->f_dmamap, fifo->f_buf, size, NULL,
48 fifo->f_buf_size = size;
49 fifo->f_ndx = fifo->f_length = 0;
51 fifo->f_buf_addr = fifo->f_dmamap->dm_segs[0].ds_addr;
52 fifo->f_pdc_rd_ndx = fifo->f_pdc_wr_ndx = 0;
53 fifo->f_pdc_space = fifo->f_buf_size;
57 bus_dmamem_unmap(dmat, fifo->f_buf, size);
61 bus_dmamap_destroy(dmat, fifo->f_dmamap);