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

[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