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* [PATCH] x86_64: Use function pointers to call DMA mapping functionsMuli Ben-Yehuda2006-01-111-100/+121
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AK: I hacked Muli's original patch a lot and there were a lot of changes - all bugs are probably to blame on me now. There were also some changes in the fall back behaviour for swiotlb - in particular it doesn't try to use GFP_DMA now anymore. Also all DMA mapping operations use the same core dma_alloc_coherent code with proper fallbacks now. And various other changes and cleanups. Known problems: iommu=force swiotlb=force together breaks needs more testing. This patch cleans up x86_64's DMA mapping dispatching code. Right now we have three possible IOMMU types: AGP GART, swiotlb and nommu, and in the future we will also have Xen's x86_64 swiotlb and other HW IOMMUs for x86_64. In order to support all of them cleanly, this patch: - introduces a struct dma_mapping_ops with function pointers for each of the DMA mapping operations of gart (AMD HW IOMMU), swiotlb (software IOMMU) and nommu (no IOMMU). - gets rid of: if (swiotlb) return swiotlb_xxx(); - PCI_DMA_BUS_IS_PHYS is now checked against the dma_ops being set This makes swiotlb faster by avoiding double copying in some cases. Signed-Off-By: Muli Ben-Yehuda <mulix@mulix.org> Signed-Off-By: Jon D. Mason <jdmason@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* manual update from upstream:Tony Luck2005-10-311-1/+1
|\ | | | | | | | | | | | | Applied Al's change 06a544971fad0992fe8b92c5647538d573089dd4 to new location of swiotlb.c Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [PATCH] gfp_t: dma-mapping (amd64)Al Viro2005-10-281-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: implement dma_sync_single_range_for_{cpu,device}John W. Linville2005-09-291-4/+27
|/ | | | | | | | Re-implement dma_sync_single_range_for_{cpu,device} for x86_64 using swiotlb_sync_single_range_for_{cpu,device}. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [PATCH] x86-64: Add dma_sync_single_range_for_{cpu,device}Andi Kleen2005-09-121-0/+5
| | | | | | | | | Currently just defined to their non range parts. Pointed out by John Linville Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+138
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!