linux/kernel/dma
Christoph Hellwig faf4ef823a dma-direct: add support for dma_coherent_default_memory
Add an option to allocate uncached memory for dma_alloc_coherent from
the global dma_coherent_default_memory.  This will allow to move
arm-nommu (and eventually other platforms) to use generic code for
allocating uncached memory from a pre-populated pool.

Note that this is a different pool from the one that platforms that
can remap at runtime use for GFP_ATOMIC allocations for now, although
there might be opportunities to eventually end up with a common codebase
for the two use cases.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Dillon Min <dillon.minfei@gmail.com>
2021-08-18 16:24:09 +02:00
..
coherent.c dma-mapping: remove a trailing space 2021-06-22 08:15:46 +02:00
contiguous.c dma-contiguous: fix a typo error in a comment 2020-11-27 10:33:42 +01:00
debug.c dma-debug: fix debugfs initialization order 2021-08-09 17:06:11 +02:00
debug.h dma-mapping: move dma-debug.h to kernel/dma/ 2020-10-06 07:07:05 +02:00
direct.c dma-direct: add support for dma_coherent_default_memory 2021-08-18 16:24:09 +02:00
direct.h swiotlb: split swiotlb_tbl_sync_single 2021-03-17 00:32:01 +00:00
dummy.c dma-mapping: return error code from dma_dummy_map_sg() 2021-08-09 17:13:06 +02:00
Kconfig dma-direct: add support for dma_coherent_default_memory 2021-08-18 16:24:09 +02:00
Makefile dma-mapping updates for 5.11: 2020-12-22 13:19:43 -08:00
map_benchmark.c dma-mapping: benchmark: Add support for multi-pages map/unmap 2021-04-02 16:41:08 +02:00
mapping.c dma-mapping: return an unsigned int from dma_map_sg{,_attrs} 2021-08-14 09:18:36 +02:00
ops_helpers.c dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable} 2021-07-16 11:30:26 +02:00
pool.c dma-pool: no need to check return value of debugfs_create functions 2020-11-27 10:33:42 +01:00
remap.c kernel/dma: remove unnecessary unmap_kernel_range 2021-04-30 11:20:40 -07:00
swiotlb.c swiotlb: manipulate orig_addr when tlb_addr has offset 2021-06-21 08:59:02 -04:00