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| author | scottl <scottl@FreeBSD.org> | 2004-11-19 17:56:22 +0000 |
|---|---|---|
| committer | scottl <scottl@FreeBSD.org> | 2004-11-19 17:56:22 +0000 |
| commit | f6f04e816f7aa1cd86b92a6123c523989250859f (patch) | |
| tree | 9f0973be3bb429af36fc558027bb995334ec759d /sys/i386 | |
| parent | 34b1372302db893de7631a54497bcf488be42579 (diff) | |
| download | FreeBSD-src-f6f04e816f7aa1cd86b92a6123c523989250859f.zip FreeBSD-src-f6f04e816f7aa1cd86b92a6123c523989250859f.tar.gz | |
Revert part of rev 1.57. The tag boundary is honored by splitting the
segment, not by bouncing.
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/busdma_machdep.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/sys/i386/i386/busdma_machdep.c b/sys/i386/i386/busdma_machdep.c index 6a47246..67f8123 100644 --- a/sys/i386/i386/busdma_machdep.c +++ b/sys/i386/i386/busdma_machdep.c @@ -135,8 +135,7 @@ static int reserve_bounce_pages(bus_dma_tag_t dmat, bus_dmamap_t map, static bus_addr_t add_bounce_page(bus_dma_tag_t dmat, bus_dmamap_t map, vm_offset_t vaddr, bus_size_t size); static void free_bounce_page(bus_dma_tag_t dmat, struct bounce_page *bpage); -static __inline int run_filter(bus_dma_tag_t dmat, bus_addr_t paddr, - bus_size_t len); +static __inline int run_filter(bus_dma_tag_t dmat, bus_addr_t paddr); /* * Return true if a match is made. @@ -147,18 +146,15 @@ static __inline int run_filter(bus_dma_tag_t dmat, bus_addr_t paddr, * to check for a match, if there is no filter callback then assume a match. */ static __inline int -run_filter(bus_dma_tag_t dmat, bus_addr_t paddr, bus_size_t len) +run_filter(bus_dma_tag_t dmat, bus_addr_t paddr) { - bus_size_t bndy; int retval; retval = 0; - bndy = dmat->boundary; do { if (((paddr > dmat->lowaddr && paddr <= dmat->highaddr) - || ((paddr & (dmat->alignment - 1)) != 0) - || ((paddr & bndy) != ((paddr + len) & bndy))) + || ((paddr & (dmat->alignment - 1)) != 0)) && (dmat->filter == NULL || (*dmat->filter)(dmat->filterarg, paddr) != 0)) retval = 1; @@ -586,7 +582,7 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dmat, while (vaddr < vendaddr) { paddr = pmap_kextract(vaddr); - if (run_filter(dmat, paddr, 0) != 0) { + if (run_filter(dmat, paddr) != 0) { needbounce = 1; map->pagesneeded++; } @@ -647,7 +643,7 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dmat, sgsize = (baddr - curaddr); } - if (map->pagesneeded != 0 && run_filter(dmat, curaddr, sgsize)) + if (map->pagesneeded != 0 && run_filter(dmat, curaddr)) curaddr = add_bounce_page(dmat, map, vaddr, sgsize); /* |
