Once again, here we are with v15: This patchset implements per-heap devices which can be opened directly and then an ioctl is used to allocate a dmabuf from the heap. The interface is similar, but much simpler then IONs, only providing an ALLOC ioctl. Also, I've provided relatively simple system and cma heaps. I've booted and tested these patches with AOSP on the HiKey960 using the kernel tree here: https://git.linaro.org/people/john.stultz/android-dev.git/log/?h=dev/dma-buf-heap And the userspace changes here: https://android-review.googlesource.com/c/device/linaro/hikey/+/909436 Compared to ION, this patchset is missing the system-contig, carveout and chunk heaps, as I don't have a device that uses those, so I'm unable to do much useful validation there. Additionally we have no upstream users of chunk or carveout, and the system-contig has been deprecated in the common/andoid-* kernels, so this should be ok. I've also removed the stats accounting, since any such accounting should be implemented by dma-buf core or the heaps themselves. New in v15: * Dropped the get_features ioctl as suggested by Brian Starkey and Daniel Vetter * Add listhead comment suggested by Sandeep Patil * Dropped minor value in struct dma_heap as suggested by Sandeep Patil * Drop unused flags field from heap_helper_buffer as suggested by Sandeep Patil * Fix grammar typo from Brian Starkey * Remove usage of dropped get_features ioctl in kselftest test Thanks again for all the reviews and feedback! -john Cc: Laura Abbott <labbott@xxxxxxxxxx> Cc: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx> Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx> Cc: Liam Mark <lmark@xxxxxxxxxxxxxx> Cc: Pratik Patel <pratikp@xxxxxxxxxxxxxx> Cc: Brian Starkey <Brian.Starkey@xxxxxxx> Cc: Vincent Donnefort <Vincent.Donnefort@xxxxxxx> Cc: Sudipto Paul <Sudipto.Paul@xxxxxxx> Cc: Andrew F. Davis <afd@xxxxxx> Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx> Cc: Chenbo Feng <fengc@xxxxxxxxxx> Cc: Alistair Strachan <astrachan@xxxxxxxxxx> Cc: Hridya Valsaraju <hridya@xxxxxxxxxx> Cc: Sandeep Patil <sspatil@xxxxxxxxxx> Cc: Hillf Danton <hdanton@xxxxxxxx> Cc: Dave Airlie <airlied@xxxxxxxxx> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Andrew F. Davis (1): dma-buf: Add dma-buf heaps framework John Stultz (4): dma-buf: heaps: Add heap helpers dma-buf: heaps: Add system heap to dmabuf heaps dma-buf: heaps: Add CMA heap to dmabuf heaps kselftests: Add dma-heap test MAINTAINERS | 18 ++ drivers/dma-buf/Kconfig | 11 + drivers/dma-buf/Makefile | 2 + drivers/dma-buf/dma-heap.c | 297 ++++++++++++++++++ drivers/dma-buf/heaps/Kconfig | 14 + drivers/dma-buf/heaps/Makefile | 4 + drivers/dma-buf/heaps/cma_heap.c | 177 +++++++++++ drivers/dma-buf/heaps/heap-helpers.c | 271 ++++++++++++++++ drivers/dma-buf/heaps/heap-helpers.h | 53 ++++ drivers/dma-buf/heaps/system_heap.c | 123 ++++++++ include/linux/dma-heap.h | 59 ++++ include/uapi/linux/dma-heap.h | 53 ++++ tools/testing/selftests/dmabuf-heaps/Makefile | 6 + .../selftests/dmabuf-heaps/dmabuf-heap.c | 238 ++++++++++++++ 14 files changed, 1326 insertions(+) create mode 100644 drivers/dma-buf/dma-heap.c create mode 100644 drivers/dma-buf/heaps/Kconfig create mode 100644 drivers/dma-buf/heaps/Makefile create mode 100644 drivers/dma-buf/heaps/cma_heap.c create mode 100644 drivers/dma-buf/heaps/heap-helpers.c create mode 100644 drivers/dma-buf/heaps/heap-helpers.h create mode 100644 drivers/dma-buf/heaps/system_heap.c create mode 100644 include/linux/dma-heap.h create mode 100644 include/uapi/linux/dma-heap.h create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c -- 2.17.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
