| 90114d65feea716eeae0ab51e92c95b140b2e6fc |
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25-Aug-2014 |
Thierry Reding <treding@nvidia.com> |
s390: Implement dma_{alloc,free}_attrs()
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 <treding@nvidia.com>
Acked-By: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
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| a9a5250cc650b54623827386247b85ba2aeeecc7 |
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21-Jun-2013 |
Sebastian Ott <sebott@linux.vnet.ibm.com> |
s390/dma: remove gratuitous brackets
Remove gratuitous brackets in dma_mapping_error.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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| 4026099a3118a1e038c48f3f85203a674938025b |
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18-Jun-2013 |
Sebastian Ott <sebott@linux.vnet.ibm.com> |
s390/dma: support debug_dma_mapping_error
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 <sebott@linux.vnet.ibm.com>
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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| 73e5a848426fae8e7f1f685389aa61d7a98e7c36 |
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18-Jun-2013 |
Sebastian Ott <sebott@linux.vnet.ibm.com> |
s390/dma: fix mapping_error detection
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 <sebott@linux.vnet.ibm.com>
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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| abd9a0c36028771a8f397f38bf79bfcf404f957f |
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17-May-2013 |
Sebastian Ott <sebott@linux.vnet.ibm.com> |
s390/dma: do not call debug_dma after free
In dma_free_coherent call debug_dma_free_coherent before deallocating
the memory to avoid a possible use after free.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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| a50b2eae8b9aed3840d7e045c9417ce5e6c5ce91 |
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30-Jan-2013 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
s390/dma: remove dma_is_consistent() declaration
There is no such function nor any caller in the whole kernel.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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| e978948db125cc3b90cc324c68e7787f0ac7be4a |
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30-Jan-2013 |
Heiko Carstens <heiko.carstens@de.ibm.com> |
s390/dma: provide dma_cache_sync() function
Provide empty dma_cache_sync() function.
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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| 828b35f60eb0148f994bb13e328df94578b07142 |
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29-Nov-2012 |
Jan Glauber <jang@linux.vnet.ibm.com> |
s390/pci: DMA support
Add DMA IOMMU support using 4K page table entries. Implement dma_map_ops.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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