linux/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c, branch v5.8

drm/amdgpu: add support for exporting VRAM using DMA-buf v3

2020-04-01T07:02:45Z

We should be able to do this now after checking all the prerequisites. v2: fix entrie count in the sgt v3: manually construct the sg Signed-off-by: Christian König Acked-by: Daniel Vetter Acked-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/359295

drm/amdgpu: add checks if DMA-buf P2P is supported

2020-04-01T07:02:45Z

Check if we can do peer2peer on the PCIe bus. Signed-off-by: Christian König Acked-by: Daniel Vetter Acked-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/359294

drm/amdgpu: note that we can handle peer2peer DMA-buf

2020-04-01T07:02:45Z

Importing should work out of the box. Signed-off-by: Christian König Acked-by: Daniel Vetter Acked-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/359293

dma-buf: drop dynamic_mapping flag

2020-02-27T13:58:01Z

Instead use the pin() callback to detect dynamic DMA-buf handling. Since amdgpu is now migrated it doesn't make much sense to keep the extra flag. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/353997/?series=73646&rev=1

drm/amdgpu: implement amdgpu_gem_prime_move_notify v2

2020-02-27T13:58:01Z

Implement the importer side of unpinned DMA-buf handling. v2: update page tables immediately Signed-off-by: Christian König Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/353998/?series=73646&rev=1

drm/amdgpu: add amdgpu_dma_buf_pin/unpin v2

2020-02-27T13:58:01Z

This implements the exporter side of unpinned DMA-buf handling. v2: fix minor coding style issues Signed-off-by: Christian König Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/353999/?series=73646&rev=1

dma-buf: add dynamic DMA-buf handling v15

2020-02-27T13:58:00Z

On the exporter side we add optional explicit pinning callbacks. Which are called when the importer doesn't implement dynamic handling, move notification or need the DMA-buf locked in place for its use case. On the importer side we add an optional move_notify callback. This callback is used by the exporter to inform the importers that their mappings should be destroyed as soon as possible. This allows the exporter to provide the mappings without the need to pin the backing store. v2: don't try to invalidate mappings when the callback is NULL, lock the reservation obj while using the attachments, add helper to set the callback v3: move flag for invalidation support into the DMA-buf, use new attach_info structure to set the callback v4: use importer_priv field instead of mangling exporter priv. v5: drop invalidation_supported flag v6: squash together with pin/unpin changes v7: pin/unpin takes an attachment now v8: nuke dma_buf_attachment_(map|unmap)_locked, everything is now handled backward compatible v9: always cache when export/importer don't agree on dynamic handling v10: minimal style cleanup v11: drop automatically re-entry avoidance v12: rename callback to move_notify v13: add might_lock in appropriate places v14: rebase on separated locking change v15: add EXPERIMENTAL flag, some more code comments Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/353993/?series=73646&rev=1

Merge tag 'drm-misc-next-2019-12-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2019-12-17T12:57:54Z

drm-misc-next for v5.6: UAPI Changes: - Add support for DMA-BUF HEAPS. Cross-subsystem Changes: - mipi dsi definition updates, pulled into drm-intel as well. - Add lockdep annotations for dma_resv vs mmap_sem and fs_reclaim. - Remove support for dma-buf kmap/kunmap. - Constify fb_ops in all fbdev drivers, including drm drivers and drm-core, and media as well. Core Changes: - Small cleanups to ttm. - Fix SCDC definition. - Assorted cleanups to core. - Add todo to remove load/unload hooks, and use generic fbdev emulation. - Assorted documentation updates. - Use blocking ww lock in ttm fault handler. - Remove drm_fb_helper_fbdev_setup/teardown. - Warning fixes with W=1 for atomic. - Use drm_debug_enabled() instead of drm_debug flag testing in various drivers. - Fallback to nontiled mode in fbdev emulation when not all tiles are present. (Later on reverted) - Various kconfig indentation fixes in core and drivers. - Fix freeing transactions in dp-mst correctly. - Sean Paul is steping down as core maintainer. :-( - Add lockdep annotations for atomic locks vs dma-resv. - Prevent use-after-free for a bad job in drm_scheduler. - Fill out all block sizes in the P01x and P210 definitions. - Avoid division by zero in drm/rect, and fix bounds. - Add drm/rect selftests. - Add aspect ratio and alternate clocks for HDMI 4k modes. - Add todo for drm_framebuffer_funcs and fb_create cleanup. - Drop DRM_AUTH for prime import/export ioctls. - Clear DP-MST payload id tables downstream when initializating. - Fix for DSC throughput definition. - Add extra FEC definitions. - Fix fake offset in drm_gem_object_funs.mmap. - Stop using encoder->bridge in core directly - Handle bridge chaining slightly better. - Add backlight support to drm/panel, and use it in many panel drivers. - Increase max number of y420 modes from 128 to 256, as preparation to add the new modes. Driver Changes: - Small fixes all over. - Fix documentation in vkms. - Fix mmap_sem vs dma_resv in nouveau. - Small cleanup in komeda. - Add page flip support in gma500 for psb/cdv. - Add ddc symlink in the connector sysfs directory for many drivers. - Add support for analogic an6345, and fix small bugs in it. - Add atomic modesetting support to ast. - Fix radeon fault handler VMA race. - Switch udl to use generic shmem helpers. - Unconditional vblank handling for mcde. - Miscellaneous fixes to mcde. - Tweak debug output from komeda using debugfs. - Add gamma and color transform support to komeda for DOU-IPS. - Add support for sony acx424AKP panel. - Various small cleanups to gma500. - Use generic fbdev emulation in udl, and replace udl_framebuffer with generic implementation. - Add support for Logic PD Type 28 panel. - Use drm_panel_* wrapper functions in exynos/tegra/msm. - Add devicetree bindings for generic DSI panels. - Don't include drm_pci.h directly in many drivers. - Add support for begin/end_cpu_access in udmabuf. - Stop using drm_get_pci_dev in gma500 and mga200. - Fixes to UDL damage handling, and use dma_buf_begin/end_cpu_access. - Add devfreq thermal support to panfrost. - Fix hotplug with daisy chained monitors by removing VCPI when disabling topology manager. - meson: Add support for OSD1 plane AFBC commit. - Stop displaying garbage when toggling ast primary plane on/off. - More cleanups and fixes to UDL. - Add D32 suport to komeda. - Remove globle copy of drm_dev in gma500. - Add support for Boe Himax8279d MIPI-DSI LCD panel. - Add support for ingenic JZ4770 panel. - Small null pointer deference fix in ingenic. - Remove support for the special tfp420 driver, as there is a generic way to do it. Signed-off-by: Daniel Vetter From: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/ba73535a-9334-5302-2e1f-5208bd7390bd@linux.intel.com

drm: share address space for dma bufs

2019-12-06T10:18:11Z

Use the shared address space of the drm device (see drm_open() in drm_file.c) for dma-bufs too. That removes a difference betweem drm device mmap vmas and dma-buf mmap vmas and fixes corner cases like dropping ptes (using madvise(DONTNEED) for example) not working properly. Also remove amdgpu driver's private dmabuf update. It is not needed any more now that we are doing this for everybody. Signed-off-by: Gerd Hoffmann Reviewed-by: Daniel Vetter Reviewed-by: Alex Deucher Reviewed-by: Christian König Link: http://patchwork.freedesktop.org/patch/msgid/20191127092523.5620-3-kraxel@redhat.com

Merge tag 'drm-misc-next-2019-10-31' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2019-11-03T23:28:51Z

drm-misc-next for 5.5: UAPI Changes: -dma-buf: Introduce and revert dma-buf heap (Andrew/John/Sean) Cross-subsystem Changes: - None Core Changes: -dma-buf: add dynamic mapping to allow exporters to choose dma_resv lock state on mmap/munmap (Christian) -vram: add prepare/cleanup fb helpers to vram helpers (Thomas) -ttm: always keep bo's on the lru + ttm cleanups (Christian) -sched: allow a free_job routine to sleep (Steven) -fb_helper: remove unused drm_fb_helper_defio_init() (Thomas) Driver Changes: -bochs/hibmc/vboxvideo: Use new vram helpers for prepare/cleanup fb (Thomas) -amdgpu: Implement dma-buf import/export without drm helpers (Christian) -panfrost: Simplify devfreq integration in driver (Steven) Cc: Christian König Cc: Thomas Zimmermann Cc: Steven Price Cc: Andrew F. Davis Cc: John Stultz Cc: Sean Paul Signed-off-by: Dave Airlie From: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20191031193015.GA243509@art_vandelay