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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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90ac706e98
The dummy DMA ops are currently used by arm64 for any device which has an invalid ACPI description and is thus barred from using DMA due to not knowing whether is is cache-coherent or not. Factor these out into general dma-mapping code so that they can be referenced from other common code paths. In the process, we can prune all the optional callbacks which just do the same thing as the default behaviour, and fill in .map_resource for completeness. Signed-off-by: Robin Murphy <robin.murphy@arm.com> [hch: moved to a separate source file] Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Tested-by: Jesper Dangaard Brouer <brouer@redhat.com> Tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
10 lines
336 B
Makefile
10 lines
336 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_HAS_DMA) += mapping.o direct.o dummy.o
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obj-$(CONFIG_DMA_CMA) += contiguous.o
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obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += coherent.o
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obj-$(CONFIG_DMA_VIRT_OPS) += virt.o
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obj-$(CONFIG_DMA_API_DEBUG) += debug.o
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obj-$(CONFIG_SWIOTLB) += swiotlb.o
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obj-$(CONFIG_DMA_REMAP) += remap.o
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