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Differential D10729 Diff 29942 sys/arm/arm/busdma_machdep-v4.c

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sys/arm/arm/busdma_machdep-v4.c

Show First 20 Lines • Show All 1,002 Lines • ▼ Show 20 Lines while (buflen > 0) {
buf += sgsize; buf += sgsize;
buflen -= sgsize; buflen -= sgsize;
} }
/* /*
* Did we fit? * Did we fit?
*/ */
if (buflen != 0) { if (buflen != 0) {
_bus_dmamap_unload(dmat, map); bus_dmamap_unload(dmat, map);
return (EFBIG); /* XXX better return value here? */ return (EFBIG); /* XXX better return value here? */
} }
return (0); return (0);
} }
int int
_bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, _bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map,
struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags, struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags,
▲ Show 20 Lines • Show All 104 Lines • ▼ Show 20 Lines while (buflen > 0) {
buflen -= sgsize; buflen -= sgsize;
} }
cleanup: cleanup:
/* /*
* Did we fit? * Did we fit?
*/ */
if (buflen != 0) { if (buflen != 0) {
_bus_dmamap_unload(dmat, map); bus_dmamap_unload(dmat, map);
return (EFBIG); /* XXX better return value here? */ return (EFBIG); /* XXX better return value here? */
} }
return (0); return (0);
} }
void void
__bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map, struct memdesc *mem, _bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map, struct memdesc *mem,
bus_dmamap_callback_t *callback, void *callback_arg) bus_dmamap_callback_t *callback, void *callback_arg)
{ {
KASSERT(dmat != NULL, ("dmatag is NULL")); KASSERT(dmat != NULL, ("dmatag is NULL"));
KASSERT(map != NULL, ("dmamap is NULL")); KASSERT(map != NULL, ("dmamap is NULL"));
map->mem = *mem; map->mem = *mem;
map->callback = callback; map->callback = callback;
map->callback_arg = callback_arg; map->callback_arg = callback_arg;
} }
bus_dma_segment_t * bus_dma_segment_t *
_bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map, _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
bus_dma_segment_t *segs, int nsegs, int error) bus_dma_segment_t *segs, int nsegs, int error)
{ {
if (segs == NULL) if (segs == NULL)
segs = map->segments; segs = map->segments;
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;
struct bounce_zone *bz; struct bounce_zone *bz;
if ((bz = dmat->bounce_zone) != NULL) { if ((bz = dmat->bounce_zone) != NULL) {
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);
▲ Show 20 Lines • Show All 156 Lines • ▼ Show 20 Lines if (op & BUS_DMASYNC_POSTREAD) {
if (tempvaddr != 0) if (tempvaddr != 0)
pmap_quick_remove_page(tempvaddr); pmap_quick_remove_page(tempvaddr);
dmat->bounce_zone->total_bounced++; dmat->bounce_zone->total_bounced++;
} }
} }
} }
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 sync_list *sl, *end; struct sync_list *sl, *end;
int bufaligned; int bufaligned;
if (op == BUS_DMASYNC_POSTWRITE) if (op == BUS_DMASYNC_POSTWRITE)
return; return;
if (map->flags & DMAMAP_COHERENT) if (map->flags & DMAMAP_COHERENT)
goto drain; goto drain;
▲ Show 20 Lines • Show All 266 Lines • Show Last 20 Lines