[PATCH v4 0/7] drm: Clean up mmap for TTM-based GEM drivers

[Thomas Zimmermann]

Something I forgot to add is that patches 1 to 4 already have a

   Reviewed-by: Christian König <christian.koenig at amd.com>



Am 25.05.21 um 17:10 schrieb Thomas Zimmermann:
> Implement mmap via struct drm_gem_object_functions.mmap in amdgpu,
> radeon and nouveau. This allows for using common DRM helpers for
> the mmap-related callbacks in struct file_operations and struct
> drm_driver. The drivers have their own vm_ops, which are now set
> automatically by the DRM core functions. The code in each driver's
> verify_access becomes part of the driver's new mmap implementation.
> 
> With the GEM drivers converted, vmwgfx is the only user of
> ttm_bo_mmap() and related infrastructure. So move everything into
> vmwgfx and delete the rsp code from TTM.
> 
> This touches several drivers. Preferably everything would be merged
> at once via drm-misc-next.
> 
> v4:
> 	* rebase on top of amdgpu hot-unplug changes
> v3:
> 	* tidy up the new mmap functions in amdgpu and radeon (Christian)
> v2:
> 	* removal of amdgpu fbdev mmap already merged (Christian)
> 	* rebase on top of amdgpu fixes [1] (Felix)
> 	* replace pr_err() with drm_err() in vmwgfx patch (Zack)
> 	* several typos
> 
> [1] https://patchwork.freedesktop.org/series/88822/
> 
> Thomas Zimmermann (7):
>    drm/ttm: Don't override vm_ops callbacks, if set
>    drm/amdgpu: Implement mmap as GEM object function
>    drm/radeon: Implement mmap as GEM object function
>    drm/nouveau: Implement mmap as GEM object function
>    drm/vmwgfx: Inline ttm_bo_mmap() into vmwgfx driver
>    drm/vmwgfx: Inline vmw_verify_access()
>    drm/ttm: Remove ttm_bo_mmap() and friends
> 
>   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 46 -------------
>   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h |  2 -
>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c     |  4 +-
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c     | 55 +++++++++++++++
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c     | 75 ---------------------
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h     |  1 -
>   drivers/gpu/drm/nouveau/nouveau_bo.c        | 10 ---
>   drivers/gpu/drm/nouveau/nouveau_drm.c       |  3 +-
>   drivers/gpu/drm/nouveau/nouveau_gem.c       | 36 ++++++++++
>   drivers/gpu/drm/nouveau/nouveau_ttm.c       | 49 --------------
>   drivers/gpu/drm/nouveau/nouveau_ttm.h       |  1 -
>   drivers/gpu/drm/radeon/radeon_drv.c         |  3 +-
>   drivers/gpu/drm/radeon/radeon_gem.c         | 49 ++++++++++++++
>   drivers/gpu/drm/radeon/radeon_ttm.c         | 65 ------------------
>   drivers/gpu/drm/radeon/radeon_ttm.h         |  1 -
>   drivers/gpu/drm/ttm/ttm_bo_vm.c             | 60 ++---------------
>   drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c  |  9 ---
>   drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c    | 53 ++++++++++++++-
>   include/drm/ttm/ttm_bo_api.h                | 13 ----
>   include/drm/ttm/ttm_device.h                | 15 -----
>   20 files changed, 202 insertions(+), 348 deletions(-)
> 
> 
> base-commit: 28dddc0c90bc6464be4c5e3224a293c022564a4e
> prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d
> prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
> --
> 2.31.1
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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