linux/kernel/dma
Maxime Ripard 84a593066a dma: contiguous: Register reusable CMA regions at boot
In order to create a CMA dma-buf heap instance for each CMA heap region
in the system, we need to collect all of them during boot.

They are created from two main sources: the reserved-memory regions in
the device tree, and the default CMA region created from the
configuration or command line parameters, if no default region is
provided in the device tree.

Let's collect all the device-tree defined CMA regions flagged as
reusable.

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://lore.kernel.org/r/20251013-dma-buf-ecc-heap-v8-3-04ce150ea3d9@kernel.org
2025-10-18 21:31:21 +05:30
..
coherent.c dma-coherent: Warn if OF reserved memory is beyond current coherent DMA mask 2025-04-22 17:44:09 +02:00
contiguous.c dma: contiguous: Register reusable CMA regions at boot 2025-10-18 21:31:21 +05:30
debug.c dma-mapping: export new dma_*map_phys() interface 2025-09-12 00:18:21 +02:00
debug.h dma-mapping: export new dma_*map_phys() interface 2025-09-12 00:18:21 +02:00
direct.c dma-mapping: export new dma_*map_phys() interface 2025-09-12 00:18:21 +02:00
direct.h dma-mapping: convert dma_direct_*map_page to be phys_addr_t based 2025-09-12 00:18:20 +02:00
dummy.c dma-mapping: call ->unmap_page and ->unmap_sg unconditionally 2024-08-22 06:18:11 +02:00
Kconfig dma-debug: remove DMA_API_DEBUG_SG 2024-10-29 08:53:37 +01:00
Makefile dma-mapping: clearly mark DMA ops as an architecture feature 2024-09-04 07:08:51 +03:00
map_benchmark.c dma-mapping: benchmark: Don't starve others when doing the test 2024-07-09 07:48:32 +02:00
mapping.c dma-mapping: export new dma_*map_phys() interface 2025-09-12 00:18:21 +02:00
ops_helpers.c iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys 2025-09-12 00:18:20 +02:00
pool.c dma/pool: Ensure DMA_DIRECT_REMAP allocations are decrypted 2025-08-13 11:02:10 +02:00
remap.c dma-remap: drop nth_page() in dma_common_contiguous_remap() 2025-09-21 14:22:06 -07:00
swiotlb.c swiotlb: Remove redundant __GFP_NOWARN 2025-08-11 11:29:38 +02:00