Differential D10729 Diff 45149 head/sys/mips/mips/busdma_machdep.c

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head/sys/mips/mips/busdma_machdep.c

Show First 20 Lines • Show All 924 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 81 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);
error = EFBIG; /* XXX better return value here? */		error = EFBIG; /* XXX better return value here? */
}		}
return (error);		return (error);
}		}

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, void *callback_arg)		struct memdesc mem, 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 = dmat->segments;		segs = dmat->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;

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);
}		}
map->sync_count = 0;		map->sync_count = 0;
▲ Show 20 Lines • Show All 156 Lines • ▼ Show 20 Lines	if (op & BUS_DMASYNC_POSTREAD) {
bpage->vaddr_nocache : bpage->vaddr),		bpage->vaddr_nocache : bpage->vaddr),
bpage->dataaddr, bpage->datacount);		bpage->dataaddr, bpage->datacount);
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 aligned;		int aligned;

if (op == BUS_DMASYNC_POSTWRITE)		if (op == BUS_DMASYNC_POSTWRITE)
return;		return;
if (STAILQ_FIRST(&map->bpages))		if (STAILQ_FIRST(&map->bpages))
_bus_dmamap_sync_bp(dmat, map, op);		_bus_dmamap_sync_bp(dmat, map, op);
▲ Show 20 Lines • Show All 272 Lines • Show Last 20 Lines