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| author | Ian Campbell <Ian.Campbell@citrix.com> | 2009-01-09 18:32:09 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 04:54:34 +0100 |
| commit | 0b8698ab5847cbe25775083659f00c658a8161c9 (patch) | |
| tree | 045bd39ac0d8c3bdd67d35bb5517f6b885183f57 /lib/swiotlb.c | |
| parent | 0811a433c61e85f895018239c4466a36311cd5de (diff) | |
| download | linux-stable-0b8698ab5847cbe25775083659f00c658a8161c9.tar.gz linux-stable-0b8698ab5847cbe25775083659f00c658a8161c9.tar.bz2 linux-stable-0b8698ab5847cbe25775083659f00c658a8161c9.zip | |
swiotlb: range_needs_mapping should take a physical address.
The swiotlb_arch_range_needs_mapping() hook should take a physical
address rather than a virtual address in order to support highmem pages.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 30fe65ede2bb..31bae40830ca 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -145,7 +145,7 @@ static void *swiotlb_bus_to_virt(dma_addr_t address) return phys_to_virt(swiotlb_bus_to_phys(address)); } -int __weak swiotlb_arch_range_needs_mapping(void *ptr, size_t size) +int __weak swiotlb_arch_range_needs_mapping(phys_addr_t paddr, size_t size) { return 0; } @@ -315,9 +315,9 @@ address_needs_mapping(struct device *hwdev, dma_addr_t addr, size_t size) return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size); } -static inline int range_needs_mapping(void *ptr, size_t size) +static inline int range_needs_mapping(phys_addr_t paddr, size_t size) { - return swiotlb_force || swiotlb_arch_range_needs_mapping(ptr, size); + return swiotlb_force || swiotlb_arch_range_needs_mapping(paddr, size); } static int is_swiotlb_buffer(char *addr) @@ -653,7 +653,7 @@ dma_addr_t swiotlb_map_page(struct device *dev, struct page *page, * buffering it. */ if (!address_needs_mapping(dev, dev_addr, size) && - !range_needs_mapping(ptr, size)) + !range_needs_mapping(virt_to_phys(ptr), size)) return dev_addr; /* @@ -804,7 +804,7 @@ swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, void *addr = sg_virt(sg); dma_addr_t dev_addr = swiotlb_virt_to_bus(hwdev, addr); - if (range_needs_mapping(addr, sg->length) || + if (range_needs_mapping(sg_phys(sg), sg->length) || address_needs_mapping(hwdev, dev_addr, sg->length)) { void *map = map_single(hwdev, sg_phys(sg), sg->length, dir); |