aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/pci-nommu.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-03-30 16:41:00 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-30 16:41:00 -0400
commit712b0006bf3a9ed0b14a56c3291975e582127766 (patch)
treeaff33e947673137ae21734321e1f036600297223 /arch/x86/kernel/pci-nommu.c
parente1c502482853f84606928f5a2f2eb6da1993cda1 (diff)
parentb0d44c0dbbd52effb731b1c0af9afd56215c48de (diff)
Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits) dma-debug: make memory range checks more consistent dma-debug: warn of unmapping an invalid dma address dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG dma-debug/x86: register pci bus for dma-debug leak detection dma-debug: add a check dma memory leaks dma-debug: add checks for kernel text and rodata dma-debug: print stacktrace of mapping path on unmap error dma-debug: Documentation update dma-debug: x86 architecture bindings dma-debug: add function to dump dma mappings dma-debug: add checks for sync_single_sg_* dma-debug: add checks for sync_single_range_* dma-debug: add checks for sync_single_* dma-debug: add checking for [alloc|free]_coherent dma-debug: add add checking for map/unmap_sg dma-debug: add checking for map/unmap_page/single dma-debug: add core checking functions dma-debug: add debugfs interface dma-debug: add kernel command line parameters dma-debug: add initialization code ... Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c
Diffstat (limited to 'arch/x86/kernel/pci-nommu.c')
-rw-r--r--arch/x86/kernel/pci-nommu.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index 8b02a3936d42..c6d703b39326 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -25,19 +25,19 @@ check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size)
25 return 1; 25 return 1;
26} 26}
27 27
28static dma_addr_t 28static dma_addr_t nommu_map_page(struct device *dev, struct page *page,
29nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size, 29 unsigned long offset, size_t size,
30 int direction) 30 enum dma_data_direction dir,
31 struct dma_attrs *attrs)
31{ 32{
32 dma_addr_t bus = paddr; 33 dma_addr_t bus = page_to_phys(page) + offset;
33 WARN_ON(size == 0); 34 WARN_ON(size == 0);
34 if (!check_addr("map_single", hwdev, bus, size)) 35 if (!check_addr("map_single", dev, bus, size))
35 return bad_dma_address; 36 return bad_dma_address;
36 flush_write_buffers(); 37 flush_write_buffers();
37 return bus; 38 return bus;
38} 39}
39 40
40
41/* Map a set of buffers described by scatterlist in streaming 41/* Map a set of buffers described by scatterlist in streaming
42 * mode for DMA. This is the scatter-gather version of the 42 * mode for DMA. This is the scatter-gather version of the
43 * above pci_map_single interface. Here the scatter gather list 43 * above pci_map_single interface. Here the scatter gather list
@@ -54,7 +54,8 @@ nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size,
54 * the same here. 54 * the same here.
55 */ 55 */
56static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg, 56static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg,
57 int nents, int direction) 57 int nents, enum dma_data_direction dir,
58 struct dma_attrs *attrs)
58{ 59{
59 struct scatterlist *s; 60 struct scatterlist *s;
60 int i; 61 int i;
@@ -78,11 +79,11 @@ static void nommu_free_coherent(struct device *dev, size_t size, void *vaddr,
78 free_pages((unsigned long)vaddr, get_order(size)); 79 free_pages((unsigned long)vaddr, get_order(size));
79} 80}
80 81
81struct dma_mapping_ops nommu_dma_ops = { 82struct dma_map_ops nommu_dma_ops = {
82 .alloc_coherent = dma_generic_alloc_coherent, 83 .alloc_coherent = dma_generic_alloc_coherent,
83 .free_coherent = nommu_free_coherent, 84 .free_coherent = nommu_free_coherent,
84 .map_single = nommu_map_single,
85 .map_sg = nommu_map_sg, 85 .map_sg = nommu_map_sg,
86 .map_page = nommu_map_page,
86 .is_phys = 1, 87 .is_phys = 1,
87}; 88};
88 89