![]() 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> |
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.. | ||
reed_solomon | ||
zlib_deflate | ||
zlib_inflate | ||
.gitignore | ||
bitmap.c | ||
bust_spinlocks.c | ||
cmdline.c | ||
crc-ccitt.c | ||
crc16.c | ||
crc32.c | ||
crc32defs.h | ||
ctype.c | ||
dec_and_lock.c | ||
div64.c | ||
dump_stack.c | ||
errno.c | ||
extable.c | ||
find_next_bit.c | ||
gen_crc32table.c | ||
genalloc.c | ||
halfmd4.c | ||
idr.c | ||
inflate.c | ||
int_sqrt.c | ||
iomap.c | ||
Kconfig | ||
Kconfig.debug | ||
kernel_lock.c | ||
klist.c | ||
kobject.c | ||
kobject_uevent.c | ||
kref.c | ||
libcrc32c.c | ||
Makefile | ||
parser.c | ||
prio_tree.c | ||
radix-tree.c | ||
rbtree.c | ||
rwsem-spinlock.c | ||
rwsem.c | ||
semaphore-sleepers.c | ||
sha1.c | ||
smp_processor_id.c | ||
sort.c | ||
spinlock_debug.c | ||
string.c | ||
swiotlb.c | ||
textsearch.c | ||
ts_bm.c | ||
ts_fsm.c | ||
ts_kmp.c | ||
vsprintf.c |