Merge changes from xlnx_rel_v2025.2 to master #8
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added 4 commits
August 13, 2025 09:36
Introduces optional support for specifying a custom CMA file path for DMA buffer allocation. The following changes are made: - Updated `dfx_cfg_init()` and `dfx_cfg_init_file()` to accept an optional `cma_file` parameter using variadic arguments (`va_list`), maintaining backward compatibility with existing calls. - Modified `dfx_cfg_init_common()` and `dfx_package_load_dmabuf()` to accept and pass through the `cma_file` pointer. - Refactored `open_device()` to try opening the provided `cma_file`, and fall back to default `/dev/dma_heap/*` paths if not provided. - Extended `dma_buffer_info` struct to include `cma_file` as a member. - Updated `export_dma_buffer()` to pass `cma_file` from `dma_data`. These changes allow users to override the default DMA heap path during runtime configuration, offering greater flexibility across different platforms or reserved memory configurations. Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
…bdfx The README has been updated to explain how you can optionally use a custom CMA (Contiguous Memory Allocator) file in libdfx. By default, the library uses standard DMA heap paths like /dev/dma_heap/reserved or /dev/dma_heap/cma_reserved@800000000. If a custom CMA file path is provided and fails to open, it will fall back to the default. The update includes simple examples showing how to use this feature with dfx_cfg_init() and dfx_cfg_init_file(). This option is useful for platforms with specific DMA buffer setup needs. Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
- Introduce semantic versioning (MAJOR.MINOR.PATCH) for libdfx.
- Use VERSION and SOVERSION properties for shared library to set SONAME.
- Cleaned up target properties with modern `set_target_properties`.
- Added explicit install rules for headers, shared, and static libraries.
- Copy `libdfx.h` to build directory for IDE support.
- Ensure install of runtime targets into ${CMAKE_INSTALL_BINDIR}.
Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
Updates open_device() to provide dynamic and reliable handling of CMA heaps under /dev/dma_heap. It now scans for any cma_reserved@* node and opens it only if the corresponding device tree node has the linux,cma-default property, verified via the new helper function is_cma_default_node(). This ensures that only valid, default CMA heaps are used. Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
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