litmus-rt.git - The LITMUS^RT kernel.

	Commit message (Collapse)	Author	Age
*	c6x: Provide dummy dma_mmap_coherent() and dma_get_sgtable()	Geert Uytterhoeven	2013-01-29
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	c6x/allmodconfig (assumed): drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_mmap’: drivers/media/v4l2-core/videobuf2-dma-contig.c:204: error: implicit declaration of function ‘dma_mmap_coherent’ drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_get_base_sgt’: drivers/media/v4l2-core/videobuf2-dma-contig.c:387: error: implicit declaration of function ‘dma_get_sgtable’ For architectures using dma_map_ops, dma_mmap_coherent() and dma_get_sgtable() are provided in <asm-generic/dma-mapping-common.h>. C6x does not use dma_map_ops, hence it should implement them itself. For now, use dummy implementations that just return -EINVAL, until the API has been finalized. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: linux-c6x-dev@linux-c6x.org Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
*	c6x: dma_debug: add debug_dma_mapping_error support	Shuah Khan	2012-11-28
\| \| \| \| \| \| \| \| \| \|	Add dma-debug interface debug_dma_mapping_error() to debug drivers that fail to check dma mapping errors on addresses returned by dma_map_single() and dma_map_page() interfaces. Signed-off-by: Shuah Khan <shuah.khan@hp.com> Acked-by: Mark Salter <msalter@redhat.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
*	C6X: memory management and DMA support	Aurelien Jacquiot	2011-10-06
	Original port to early 2.6 kernel using TI COFF toolchain. Brought up to date by Mark Salter <msalter@redhat.com> The C6X architecture currently lacks an MMU so memory management is relatively simple. There is no bus snooping between L2 and main memory but coherent DMA memory is supported by making regions of main memory uncached. If such a region is desired, it can be specified on the commandline with a "memdma=" argument. Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com> Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de>