BMC/Intel-BMC/linux.git/arch/s390/include/asm/dma-mapping.h, branch dev

s390: Use bool function return values of true/false not 1/0

2015-04-15T10:23:48+00:00

Use the normal return values for bool functions Signed-off-by: Joe Perches Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: Implement dma_{alloc,free}_attrs()

2014-08-26T05:39:12+00:00

The S390 architecture advertises support for HAVE_DMA_ATTRS when PCI is enabled. Patches to unify some of the DMA API would like to rely on the dma_alloc_attrs() and dma_free_attrs() functions to be provided when an architecture supports DMA attributes. Rename dma_alloc_coherent() and dma_free_coherent() to dma_alloc_attrs() and dma_free_attrs() since they are functionally equivalent and alias the former to the latter for compatibility. For consistency with other architectures, also reuse the existing symbol HAVE_DMA_ATTRS defined in arch/Kconfig instead of providing a duplicate. Select it when PCI is enabled. While at it, drop a redundant 'default n' from the PCI Kconfig symbol. Signed-off-by: Thierry Reding Acked-By: Sebastian Ott Signed-off-by: Marek Szyprowski

s390/dma: remove gratuitous brackets

2013-06-26T19:10:26+00:00

Remove gratuitous brackets in dma_mapping_error. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/dma: support debug_dma_mapping_error

2013-06-19T07:25:42+00:00

Without this patch drivers will get blamed (CONFIG_DMA_API_DEBUG=y) for not calling dma_mapping_error (even if they do). Signed-off-by: Sebastian Ott Acked-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky

s390/dma: fix mapping_error detection

2013-06-19T07:25:42+00:00

The map_page implementation of s390 returns DMA_ERROR_CODE in an error situation. Correctly test if a mapping was erroneous (DMA_ERROR_CODE is defined as ~0). Signed-off-by: Sebastian Ott Acked-by: Gerald Schaefer Signed-off-by: Martin Schwidefsky

s390/dma: do not call debug_dma after free

2013-05-22T07:45:56+00:00

In dma_free_coherent call debug_dma_free_coherent before deallocating the memory to avoid a possible use after free. Reviewed-by: Gerald Schaefer Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/dma: remove dma_is_consistent() declaration

2013-02-14T14:55:12+00:00

There is no such function nor any caller in the whole kernel. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390/dma: provide dma_cache_sync() function

2013-02-14T14:55:11+00:00

Provide empty dma_cache_sync() function. Acked-by: Sebastian Ott Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390/pci: DMA support

2012-11-30T16:47:23+00:00

Add DMA IOMMU support using 4K page table entries. Implement dma_map_ops. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky