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BUS_DMA(9): Support BUS_DMA_COHERENT

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This commit is contained in:
Sebastian Huber 2014-11-25 12:50:29 +01:00
parent 33a15c304b
commit fb683f76b5
1 changed files with 9 additions and 2 deletions
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11
rtemsbsd/rtems/rtems-bsd-bus-dma.c
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@ -237,7 +237,14 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
return ENOMEM;
}
*vaddr = rtems_heap_allocate_aligned_with_boundary(dmat->maxsize, dmat->alignment, dmat->boundary);
if ((flags & BUS_DMA_COHERENT) != 0) {
*vaddr = rtems_cache_coherent_allocate(
dmat->maxsize, dmat->alignment, dmat->boundary);
} else {
*vaddr = rtems_heap_allocate_aligned_with_boundary(
dmat->maxsize, dmat->alignment, dmat->boundary);
}
if (*vaddr == NULL) {
free(*mapp, M_DEVBUF);
@ -261,7 +268,7 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
void
bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
{
free(vaddr, M_RTEMS_HEAP);
rtems_cache_coherent_free(vaddr);
free(map, M_DEVBUF);
}