linux/include/drm/ttm, branch v5.5

Merge branch 'vmwgfx-coherent' of git://people.freedesktop.org/~thomash/linux into drm-next

2019-11-28T04:33:01Z

Graphics APIs like OpenGL 4.4 and Vulkan require the graphics driver to provide coherent graphics memory, meaning that the GPU sees any content written to the coherent memory on the next GPU operation that touches that memory, and the CPU sees any content written by the GPU to that memory immediately after any fence object trailing the GPU operation is signaled. Paravirtual drivers that otherwise require explicit synchronization needs to do this by hooking up dirty tracking to pagefault handlers and buffer object validation. Provide mm helpers needed for this and that also allow for huge pmd- and pud entries (patch 1-3), and the associated vmwgfx code (patch 4-7). The code has been tested and exercised by a tailored version of mesa where we disable all explicit synchronization and assume graphics memory is coherent. The performance loss varies of course; a typical number is around 5%. Signed-off-by: Dave Airlie From: Thomas Hellstrom Link: https://patchwork.freedesktop.org/patch/msgid/20191113131639.4653-1-thomas_os@shipmail.org

drm/ttm, drm/vmwgfx: Use a configuration option for the TTM dma page pool

2019-11-14T07:41:23Z

Drivers like vmwgfx may want to test whether the dma page pool is present or not. Since it's activated by default by TTM if compiled-in, define a hidden configuration option that the driver can test for. Cc: Christian König Signed-off-by: Thomas Hellstrom Reviewed-by: Christian König

drm/ttm: Convert vm callbacks to helpers

2019-11-06T12:02:00Z

The default TTM fault handler may not be completely sufficient (vmwgfx needs to do some bookkeeping, control the write protectionand also needs to restrict the number of prefaults). Also make it possible replicate ttm_bo_vm_reserve() functionality for, for example, mkwrite handlers. So turn the TTM vm code into helpers: ttm_bo_vm_fault_reserved(), ttm_bo_vm_open(), ttm_bo_vm_close() and ttm_bo_vm_reserve(). Also provide a default TTM fault handler for other drivers to use. Signed-off-by: Thomas Hellstrom Reviewed-by: Christian König

drm/ttm: remove pointers to globals

2019-10-25T09:40:51Z

As the name says global memory and bo accounting is global. So it doesn't make to much sense having pointers to global structures all around the code. Signed-off-by: Christian König Reviewed-by: Thomas Hellström Link: https://patchwork.freedesktop.org/patch/332879/

drm/ttm: always keep BOs on the LRU

2019-10-25T09:40:50Z

This allows blocking for BOs to become available in the memory management. Amdgpu is doing this for quite a while now during CS. Now apply the new behavior to all drivers using TTM. Signed-off-by: Christian König Acked-by: Thomas Hellstrom Link: https://patchwork.freedesktop.org/patch/332878/

drm/ttm, drm/vmwgfx: move cpu_writers handling into vmwgfx

2019-10-25T09:40:28Z

This feature is only used by vmwgfx and superfluous for everybody else. Signed-off-by: Christian König Co-developed-by: Thomas Hellstrom Signed-off-by: Thomas Hellstrom Tested-by: Thomas Hellstrom Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/333650/

drm/ttm: rename ttm_fbdev_mmap

2019-10-17T11:59:16Z

Rename ttm_fbdev_mmap to ttm_bo_mmap_obj. Move the vm_pgoff sanity check to amdgpu_bo_fbdev_mmap (only ttm_fbdev_mmap user in tree). The ttm_bo_mmap_obj function can now be used to map any buffer object. This allows to implement &drm_gem_object_funcs.mmap in gem ttm helpers. v3: patch added to series Signed-off-by: Gerd Hoffmann Acked-by: Thomas Zimmermann Reviewed-by: Christian König Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20191016115203.20095-8-kraxel@redhat.com

Merge drm/drm-next into drm-misc-next

2019-10-03T14:38:50Z

We haven't done any backmerge for a while due to the merge window, and it starts to become an issue for komeda. Let's bring 5.4-rc1 in. Signed-off-by: Maxime Ripard

drm/ttm: remove embedded vma_offset_manager

2019-09-11T06:03:25Z

No users left. Drivers either setup vma_offset_manager themself (vmwgfx) or pass the gem vma_offset_manager to ttm_bo_device_init (all other drivers). Signed-off-by: Gerd Hoffmann Reviewed-by: Daniel Vetter Reviewed-by: Christian König Link: http://patchwork.freedesktop.org/patch/msgid/20190905070509.22407-9-kraxel@redhat.com

drm/ttm: turn ttm_bo_device.vma_manager into a pointer

2019-09-11T06:03:23Z

Rename the embedded struct vma_offset_manager, new name is _vma_manager. ttm_bo_device.vma_manager changed to a pointer. The ttm_bo_device_init() function gets an additional vma_manager argument which allows to initialize ttm with a different vma manager. When passing NULL the embedded _vma_manager is used. All callers are updated to pass NULL, so the behavior doesn't change. Signed-off-by: Gerd Hoffmann Reviewed-by: Daniel Vetter Reviewed-by: Christian König Link: http://patchwork.freedesktop.org/patch/msgid/20190905070509.22407-2-kraxel@redhat.com