user/sven/linux.git/include/linux/dma-mapping.h, branch v5.10.36

driver core: add a min_align_mask field to struct device_dma_parameters

2021-05-07T09:04:32Z

commit: 36950f2da1ea4cb683be174f6f581e25b2d33e71 Some devices rely on the address offset in a page to function correctly (NVMe driver as an example). These devices may use a different page size than the Linux kernel. The address offset has to be preserved upon mapping, and in order to do so, we need to record the page_offset_mask first. Signed-off-by: Jianxiong Gao Signed-off-by: Christoph Hellwig Acked-by: Greg Kroah-Hartman Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman

dma-mapping: move more functions to dma-map-ops.h

2020-10-20T08:41:07Z

Due to a mismerge a bunch of prototypes that should have moved to dma-map-ops.h are still in dma-mapping.h, fix that up. Signed-off-by: Christoph Hellwig

dma-mapping: move dma-debug.h to kernel/dma/

2020-10-06T05:07:05Z

Most of dma-debug.h is not required by anything outside of kernel/dma. Move the four declarations needed by dma-mappin.h or dma-ops providers into dma-mapping.h and dma-map-ops.h, and move the remainder of the file to kernel/dma/debug.h. Signed-off-by: Christoph Hellwig

dma-mapping: split

2020-10-06T05:07:03Z

Split out all the bits that are purely for dma_map_ops implementations and related code into a new header so that they don't get pulled into all the drivers. That also means the architecture specific is not pulled in by any more, which leads to a missing includes that were pulled in by the x86 or arm versions in a few not overly portable drivers. Signed-off-by: Christoph Hellwig

dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods

2020-09-25T04:20:47Z

This will allow IOMMU drivers to allocate non-contigous memory and return a vmapped virtual address. Signed-off-by: Christoph Hellwig

dma-mapping: add a new dma_alloc_pages API

2020-09-25T04:20:47Z

This API is the equivalent of alloc_pages, except that the returned memory is guaranteed to be DMA addressable by the passed in device. The implementation will also be used to provide a more sensible replacement for DMA_ATTR_NON_CONSISTENT flag. Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages as its backend. Signed-off-by: Christoph Hellwig Acked-by: Thomas Bogendoerfer (MIPS part)

dma-mapping: remove dma_cache_sync

2020-09-25T04:20:46Z

All users are gone now, remove the API. Signed-off-by: Christoph Hellwig Acked-by: Thomas Bogendoerfer (MIPS part)

dma-mapping: add a new dma_alloc_noncoherent API

2020-09-25T04:20:43Z

Add a new API to allocate and free memory that is guaranteed to be addressable by a device, but which potentially is not cache coherent for DMA. To transfer ownership to and from the device, the existing streaming DMA API calls dma_sync_single_for_device and dma_sync_single_for_cpu must be used. For now the new calls are implemented on top of dma_alloc_attrs just like the old-noncoherent API, but once all drivers are switched to the new API it will be replaced with a better working implementation that is available on all architectures. Signed-off-by: Christoph Hellwig

dma-mapping: better document dma_addr_t and DMA_MAPPING_ERROR

2020-09-25T04:14:29Z

Move the comment documenting dma_addr_t away from the dma_map_ops definition which isn't very related to it, and toward DMA_MAPPING_ERROR, which is somewhat related. Add a little blurb about DMA_MAPPING_ERROR as well. Signed-off-by: Christoph Hellwig

dma-mapping: move valid_dma_direction to dma-direction.h

2020-09-25T04:12:25Z

Move the valid_dma_direction helper to a more suitable header, and clean it up to use the proper enum as well as removing pointless braces. Signed-off-by: Christoph Hellwig