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2008-08-22dma-coherent: export dma_[alloc|release]_from_coherent methodsIngo Molnar1-0/+2
fixes modular builds: ERROR: "dma_alloc_from_coherent" [sound/core/snd-page-alloc.ko] undefined! ERROR: "dma_release_from_coherent" [sound/core/snd-page-alloc.ko] undefined! Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-07DMA: make dma-coherent.c documentation kdoc-friendlyDmitry Baryshkov1-5/+5
Spotted by Randy. Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-05dma: fix order calculation in dma_mark_declared_memory_occupied()Jan Beulich1-3/+2
get_order() takes byte-sized input, not a page-granular one. Irrespective of this fix I'm inclined to believe that this doesn't work right anyway - bitmap_allocate_region() has an implicit assumption of 'pos' being suitable for 'order', which this function doesn't seem to enforce (and since it's being called with a byte-granular value there's no reason to believe that the callers would make sure device_addr is passed accordingly - it's also not documented that way). Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20dma-coherent: add documentation to new interfacesDmitry Baryshkov1-0/+28
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVEDmitry Baryshkov1-2/+1
Don't rewrite successfull allocation return values in case the memory was marked with DMA_MEMORY_EXCLUSIVE. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-30generic: per-device coherent dma allocatorDmitry Baryshkov1-0/+127
Currently x86_32, sh and cris-v32 provide per-device coherent dma memory allocator. However their implementation is nearly identical. Refactor out common code to be reused by them. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>