linux/kernel/dma/Makefile

# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_HAS_DMA)			+= mapping.o direct.o dummy.o
obj-$(CONFIG_DMA_CMA)			+= contiguous.o
obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += coherent.o
obj-$(CONFIG_DMA_VIRT_OPS)		+= virt.o
obj-$(CONFIG_DMA_API_DEBUG)		+= debug.o
obj-$(CONFIG_SWIOTLB)			+= swiotlb.o
obj-$(CONFIG_DMA_REMAP)			+= remap.o
dma-mapping: move all DMA mapping code to kernel/dma Currently the code is split over various files with dma- prefixes in the lib/ and drives/base directories, and the number of files keeps growing. Move them into a single directory to keep the code together and remove the file name prefixes. To match the irq infrastructure this directory is placed under the kernel/ directory. Signed-off-by: Christoph Hellwig <hch@lst.de> 2018-06-12 19:01:45 +02:00			`# SPDX-License-Identifier: GPL-2.0`

dma-mapping: factor out dummy DMA ops 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> 2018-12-06 13:14:44 -08:00			`obj-$(CONFIG_HAS_DMA) += mapping.o direct.o dummy.o`
dma-mapping: move all DMA mapping code to kernel/dma Currently the code is split over various files with dma- prefixes in the lib/ and drives/base directories, and the number of files keeps growing. Move them into a single directory to keep the code together and remove the file name prefixes. To match the irq infrastructure this directory is placed under the kernel/ directory. Signed-off-by: Christoph Hellwig <hch@lst.de> 2018-06-12 19:01:45 +02:00			`obj-$(CONFIG_DMA_CMA) += contiguous.o`
			`obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += coherent.o`
			`obj-$(CONFIG_DMA_VIRT_OPS) += virt.o`
			`obj-$(CONFIG_DMA_API_DEBUG) += debug.o`
			`obj-$(CONFIG_SWIOTLB) += swiotlb.o`
dma-mapping: move the remap helpers to a separate file The dma remap code only makes sense for not cache coherent architectures (or possibly the corner case of highmem CMA allocations) and currently is only used by arm, arm64, csky and xtensa. Split it out into a separate file with a separate Kconfig symbol, which gets the right copyright notice given that this code was written by Laura Abbott working for Code Aurora at that point. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Laura Abbott <labbott@redhat.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> 2018-08-24 10:31:08 +02:00			`obj-$(CONFIG_DMA_REMAP) += remap.o`