diff options
Diffstat (limited to 'sys/ia64')
| -rw-r--r-- | sys/ia64/ia64/busdma_machdep.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/ia64/ia64/busdma_machdep.c b/sys/ia64/ia64/busdma_machdep.c index 6cc2988..659db52 100644 --- a/sys/ia64/ia64/busdma_machdep.c +++ b/sys/ia64/ia64/busdma_machdep.c @@ -936,6 +936,13 @@ add_bounce_page(bus_dma_tag_t dmat, bus_dmamap_t map, vm_offset_t vaddr, active_bpages++; mtx_unlock(&bounce_lock); + if (dmat->flags & BUS_DMA_KEEP_PG_OFFSET) { + /* page offset needs to be preserved */ + bpage->vaddr &= ~PAGE_MASK; + bpage->busaddr &= ~PAGE_MASK; + bpage->vaddr |= vaddr & PAGE_MASK; + bpage->busaddr |= vaddr & PAGE_MASK; + } bpage->datavaddr = vaddr; bpage->datacount = size; STAILQ_INSERT_TAIL(&(map->bpages), bpage, links); |
