Differential D10729 Diff 29942 sys/powerpc/powerpc/busdma_machdep.c

Changeset View

Standalone View

sys/powerpc/powerpc/busdma_machdep.c

Show First 20 Lines • Show All 835 Lines • ▼ Show 20 Lines	_bus_dmamap_load_buffer(bus_dma_tag_t dmat,

/*		/*
* Did we fit?		* Did we fit?
*/		*/
return (buflen != 0 ? EFBIG : 0); /* XXX better return value here? */		return (buflen != 0 ? EFBIG : 0); /* XXX better return value here? */
}		}

void		void
__bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,		_bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,
struct memdesc mem, bus_dmamap_callback_t callback,		struct memdesc mem, bus_dmamap_callback_t callback,
void *callback_arg)		void *callback_arg)
{		{

if (dmat->flags & BUS_DMA_COULD_BOUNCE) {		if (dmat->flags & BUS_DMA_COULD_BOUNCE) {
map->dmat = dmat;		map->dmat = dmat;
map->mem = *mem;		map->mem = *mem;
map->callback = callback;		map->callback = callback;
Show All 21 Lines	_bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,

return (segs);		return (segs);
}		}

/*		/*
* Release the mapping held by map.		* Release the mapping held by map.
*/		*/
void		void
_bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)		bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
{		{
struct bounce_page *bpage;		struct bounce_page *bpage;

if (dmat->iommu) {		if (dmat->iommu) {
IOMMU_UNMAP(dmat->iommu, map->segments, map->nsegs, dmat->iommu_cookie);		IOMMU_UNMAP(dmat->iommu, map->segments, map->nsegs, dmat->iommu_cookie);
map->nsegs = 0;		map->nsegs = 0;
}		}

while ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {		while ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {
STAILQ_REMOVE_HEAD(&map->bpages, links);		STAILQ_REMOVE_HEAD(&map->bpages, links);
free_bounce_page(dmat, bpage);		free_bounce_page(dmat, bpage);
}		}
}		}

void		void
_bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)		bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
{		{
struct bounce_page *bpage;		struct bounce_page *bpage;
vm_offset_t datavaddr, tempvaddr;		vm_offset_t datavaddr, tempvaddr;

if ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {		if ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {

/*		/*
* Handle data bouncing. We might also		* Handle data bouncing. We might also
▲ Show 20 Lines • Show All 314 Lines • Show Last 20 Lines