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Differential D26319 Diff 76764 head/sys/dev/xilinx/axidma.c

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head/sys/dev/xilinx/axidma.c

Show First 20 Lines • Show All 357 Lines • ▼ Show 20 Linesaxidma_desc_alloc(struct axidma_softc *sc, struct xdma_channel *xchan,
if (vmem_alloc(xchan->vmem, chan->mem_size, M_FIRSTFIT | M_NOWAIT, if (vmem_alloc(xchan->vmem, chan->mem_size, M_FIRSTFIT | M_NOWAIT,
&chan->mem_paddr)) { &chan->mem_paddr)) {
device_printf(sc->dev, "Failed to allocate memory.\n"); device_printf(sc->dev, "Failed to allocate memory.\n");
return (-1); return (-1);
} }
chan->mem_vaddr = kva_alloc(chan->mem_size); chan->mem_vaddr = kva_alloc(chan->mem_size);
pmap_kenter_device(chan->mem_vaddr, chan->mem_size, chan->mem_paddr); pmap_kenter_device(chan->mem_vaddr, chan->mem_size, chan->mem_paddr);
device_printf(sc->dev, "Allocated chunk %lx %d\n", device_printf(sc->dev, "Allocated chunk %lx %lu\n",
chan->mem_paddr, chan->mem_size); chan->mem_paddr, chan->mem_size);
for (i = 0; i < nsegments; i++) { for (i = 0; i < nsegments; i++) {
chan->descs[i] = (struct axidma_desc *) chan->descs[i] = (struct axidma_desc *)
((uint64_t)chan->mem_vaddr + desc_size * i); ((uint64_t)chan->mem_vaddr + desc_size * i);
chan->descs_phys[i] = chan->mem_paddr + desc_size * i; chan->descs_phys[i] = chan->mem_paddr + desc_size * i;
} }
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