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The bus_dmamap_load_uio(9) shall use pmap of the thread recorded in the

Browse Source 
uio_td to extract pages from, instead of unconditionally use kernel
pmap.

Submitted by:	Jason Harmening <jason.harmening gmail com> (amd64 version)
PR:	amd64/133592
Reviewed by:	scottl (original patch), jhb
MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2009-04-13 19:20:32 +00:00
parent c410810eb7
commit 3feb57a0a8
4 changed files with 25 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/amd64/amd64/busdma_machdep.c
View File

@ -606,6 +606,9 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dmat,
vendaddr = (vm_offset_t)buf + buflen;
while (vaddr < vendaddr) {
if (pmap)
paddr = pmap_extract(pmap, vaddr);
else
paddr = pmap_kextract(vaddr);
if (run_filter(dmat, paddr) != 0)
map->pagesneeded++;

10
sys/arm/arm/busdma_machdep.c
View File

@ -669,8 +669,8 @@ bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
}
static int
_bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
bus_size_t buflen, int flags)
_bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, pmap_t pmap,
void *buf, bus_size_t buflen, int flags)
{
vm_offset_t vaddr;
vm_offset_t vendaddr;
@ -689,6 +689,9 @@ _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
vendaddr = (vm_offset_t)buf + buflen;
while (vaddr < vendaddr) {
if (pmap != NULL)
paddr = pmap_extract(pmap, vaddr);
else
paddr = pmap_kextract(vaddr);
if (((dmat->flags & BUS_DMA_COULD_BOUNCE) != 0) &&
run_filter(dmat, paddr) != 0)
@ -745,7 +748,8 @@ bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dma_segment_t *segs,
bmask = ~(dmat->boundary - 1);
if ((dmat->flags & BUS_DMA_COULD_BOUNCE) != 0) {
error = _bus_dmamap_count_pages(dmat, map, buf, buflen, flags);
error = _bus_dmamap_count_pages(dmat, map, pmap, buf, buflen,
flags);
if (error)
return (error);
}

13
sys/i386/i386/busdma_machdep.c
View File

@ -142,8 +142,8 @@ 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);
int run_filter(bus_dma_tag_t dmat, bus_addr_t paddr);
int _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
bus_size_t buflen, int flags);
int _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, pmap_t pmap,
void *buf, bus_size_t buflen, int flags);
#ifdef XEN
#undef pmap_kextract
@ -577,8 +577,8 @@ bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
}
int
_bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
bus_size_t buflen, int flags)
_bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, pmap_t pmap,
void *buf, bus_size_t buflen, int flags)
{
vm_offset_t vaddr;
vm_offset_t vendaddr;
@ -598,6 +598,9 @@ _bus_dmamap_count_pages(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
vendaddr = (vm_offset_t)buf + buflen;
while (vaddr < vendaddr) {
if (pmap)
paddr = pmap_extract(pmap, vaddr);
else
paddr = pmap_kextract(vaddr);
if (((dmat->flags & BUS_DMA_COULD_BOUNCE) != 0) &&
run_filter(dmat, paddr) != 0) {
@ -660,7 +663,7 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dmat,
map = &nobounce_dmamap;
if ((dmat->flags & BUS_DMA_COULD_BOUNCE) != 0) {
error = _bus_dmamap_count_pages(dmat, map, buf, buflen, flags);
error = _bus_dmamap_count_pages(dmat, map, pmap, buf, buflen, flags);
if (error)
return (error);
}

3
sys/ia64/ia64/busdma_machdep.c
View File

@ -527,6 +527,9 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dmat,
vendaddr = (vm_offset_t)buf + buflen;
while (vaddr < vendaddr) {
if (pmap != NULL)
paddr = pmap_extract(pmap, vaddr);
else
paddr = pmap_kextract(vaddr);
if (run_filter(dmat, paddr, 0) != 0)
map->pagesneeded++;