linux-toradex.git/kernel/dma/direct.c, branch v5.14-rc6

swiotlb: split swiotlb_tbl_sync_single

2021-03-17T00:32:01+00:00

Split swiotlb_tbl_sync_single into two separate funtions for the to device
and to cpu synchronization.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Konrad Rzeszutek Wilk

dma-mapping: remove the dma_direct_set_offset export

2020-11-18T08:11:38+00:00

Drop the dma_direct_set_offset export and move the declaration to
dma-map-ops.h now that the Allwinner drivers have stopped calling it.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Maxime Ripard

kernel/: fix repeated words in comments

2020-10-16T18:11:19+00:00

Fix multiple occurrences of duplicated words in kernel/.

Fix one typo/spello on the same line as a duplicate word.  Change one
instance of "the the" to "that the".  Otherwise just drop one of the
repeated words.

Signed-off-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Link: https://lkml.kernel.org/r/98202fa6-8919-ef63-9efe-c0fad5ca7af1@infradead.org
Signed-off-by: Linus Torvalds

dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling

2020-10-07T09:09:20+00:00

Use and entirely separate code path for the DMA_ATTR_NO_KERNEL_MAPPING
path.  This avoids any confusion about the ret type, and avoids lots of
attr checks and helpers that can be significantly simplified now.

It also ensures that common handling is applied to architetures still
using the arch alloc/free hooks.

Signed-off-by: Christoph Hellwig

dma-direct: factor out a dma_direct_alloc_from_pool helper

2020-10-07T09:07:51+00:00

This ensures dma_direct_alloc_pages will use the right gfp mask, as
well as keeping the code for that common between the two allocators.

Signed-off-by: Christoph Hellwig

dma-direct check for highmem pages in dma_direct_alloc_pages

2020-10-07T09:03:21+00:00

Check for highmem pages from CMA, just like in the dma_direct_alloc path.

Signed-off-by: Christoph Hellwig

dma-mapping: move large parts of to kernel/dma

2020-10-06T05:07:06+00:00

Most of the dma_direct symbols should only be used by direct.c and
mapping.c, so move them to kernel/dma.  In fact more of dma-direct.h
should eventually move, but that will require more coordination with
other subsystems.

Signed-off-by: Christoph Hellwig

dma-mapping: merge into

2020-10-06T05:07:04+00:00

Merge dma-contiguous.h into dma-map-ops.h, after removing the comment
describing the contiguous allocator into kernel/dma/contigous.c.

Signed-off-by: Christoph Hellwig

dma-mapping: split

2020-10-06T05:07:03+00:00

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 a new dma_alloc_pages API

2020-09-25T04:20:47+00:00

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)