BMC/Intel-BMC/linux.git/drivers/gpu/drm/drm_prime.c, branch dev-4.17

drm/prime: make the pages array optional for drm_prime_sg_to_page_addr_arrays

2018-03-06T17:24:52+00:00

Most of the time we only need the dma addresses. Signed-off-by: Christian König Reviewed-by: Roger He Signed-off-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20180227115000.4105-2-christian.koenig@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/20180227115000.4105-3-christian.koenig@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/20180227115000.4105-4-christian.koenig@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/20180227115000.4105-5-christian.koenig@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/BN6PR12MB18262C0DE9B5F07B9A42EAE7F2C60@BN6PR12MB1826.namprd12.prod.outlook.com

drm/prime: fix potential race in drm_gem_map_detach

2018-03-06T17:22:42+00:00

Unpin the GEM object only after freeing the sg table. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Acked-by: Roger He Signed-off-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20180227115000.4105-1-christian.koenig@amd.com

drm: add kernel doc for exported gem dmabuf_ops

2018-01-19T16:14:59+00:00

Signed-off-by: Samuel Li Reviewed-by: Daniel Vetter Reviewed-by: Christian König Signed-off-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/1516311860-24949-1-git-send-email-Samuel.Li@amd.com

drm: export gem dmabuf_ops for drivers to reuse

2018-01-09T17:07:07+00:00

Signed-off-by: Samuel Li Reviewed-by: Christian König Signed-off-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/1515100334-6845-1-git-send-email-Samuel.Li@amd.com

drm/prime: skip CPU sync in map/unmap dma_buf

2017-12-04T16:30:19+00:00

Dma-bufs should already be device coherent, as they are only pulled in the CPU domain via the begin/end cpu_access calls. As we cache the mapping set up by dma_map_sg a CPU sync at this point will not actually guarantee proper coherency on non-coherent architectures, so we can as well stop pretending. This is an important performance fix for architectures which need explicit cache synchronization and userspace doing lots of dma-buf imports. Improves Weston on Etnaviv performance 5x, where before this patch > 90% of Weston CPU time was spent synchronizing caches for buffers which are already device coherent. Signed-off-by: Lucas Stach Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20171130173428.8666-1-l.stach@pengutronix.de

drm/core: clean up references to drm_dev_unref()

2017-09-27T08:53:12+00:00

This is a continuation of a previous commit ("drm: introduce drm_dev_{get/put} functions") to replace all references to drm_dev_unref() in drm core files with drm_dev_put(). Signed-off-by: Aishwarya Pant Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20170926170400.GA7671@aishwarya

drm: introduce drm_dev_{get/put} functions

2017-09-26T11:12:15+00:00

Reference counting functions in the kernel typically use get/put suffixes. For maintaining coding style consistency, introduce drm_dev_{get/put} functions. All callers of drm_dev_ref() API have been converted in this patch and hence it has been dropped while the drm_dev_unref() API with non-trivial number of users remains for compatibility. The semantic patch scripts/coccinelle/api/drm-get-put.cocci has been updated with the new helper for conversion of drm_dev_unref() to drm_dev_put() Signed-off-by: Aishwarya Pant Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/6babda56134035a98220d5d37a4fd4048df214ce.1506413698.git.aishpant@gmail.com

drm/prime: Introduce drm_gem_prime_import_dev

2017-05-08T07:39:13+00:00

The existing drm_gem_prime_import function uses the underlying struct device of a drm_device for attaching to a dma_buf. Some drivers (notably vgem) may not have an underlying device structure. Offer an alternate function to attach using any available device structure. Signed-off-by: Laura Abbott Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-3-git-send-email-labbott@redhat.com

dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

2017-04-20T08:17:46+00:00

Seeing the kunmap_atomic dma_buf_ops share the same name with a macro in highmem.h, the former can be aliased if any dma-buf user includes that header. I'm personally trying to include highmem.h inside scatterlist.h and this breaks the dma-buf code proper. Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP. To maintain consistency I've renamed all four of kmap* and kunmap* to be map* and unmap*. (Even though only kmap_atomic presently conflicts.) [1] https://www.spinics.net/lists/target-devel/msg15070.html Signed-off-by: Logan Gunthorpe Reviewed-by: Sinclair Yeh Acked-by: Daniel Vetter Acked-by: Sumit Semwal Signed-off-by: Sumit Semwal Link: http://patchwork.freedesktop.org/patch/msgid/1492630570-879-1-git-send-email-logang@deltatee.com

drm: Extract drm_prime.h

2017-03-09T15:18:02+00:00

Plus a little bit more documentation. v2: Untangle the missing forward decls to make drm_prime|gem.h free-standing. Reviewed-by: Gustavo Padovan Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20170308141257.12119-3-daniel.vetter@ffwll.ch