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[RFC,0/5] Core TTM changes for i915 TTM enabling

Message ID 20210520150947.803891-1-thomas.hellstrom@linux.intel.com (mailing list archive)
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Series Core TTM changes for i915 TTM enabling | expand

Message

Thomas Hellstrom May 20, 2021, 3:09 p.m. UTC 
This is mainly a pre-check that the core TTM changes for the initial
i915 TTM patch series look reasonably ok.

Main thing is we add the new page-based iomem memcpy util to TTM, and
for some speed the copy-from-wc-x86-only prefetching memcpy to core drm.
Note that the legacy memcpy path is largely untested. Perhaps can give
it some testing on vmwgfx.

A bugfix and some minor optimization for the ttm_bo_pipeline_gutting()
idle case

Finally allow the frequently-pinning i915 driver to block swapping of
pinned memory that is still on the LRU.

If OK, I'd like to include these as a part of the i915 series.

Cc: Christian König <christian.koenig@amd.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>

Thomas Hellström (5):
  drm/ttm: Add a generic TTM memcpy move for page-based iomem
  drm, drm/i915: Move the memcpy_from_wc functionality to core drm
  drm/ttm: Use drm_memcpy_from_wc for TTM bo moves
  drm/ttm: Document and optimize ttm_bo_pipeline_gutting()
  drm/ttm, drm/amdgpu: Allow the driver some control over swapping

 drivers/gpu/drm/Makefile                      |   2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c       |   4 +
 drivers/gpu/drm/drm_drv.c                     |   2 +
 .../drm/{i915/i915_memcpy.c => drm_memcpy.c}  |  31 +-
 drivers/gpu/drm/i915/Makefile                 |   1 -
 .../gpu/drm/i915/gem/i915_gem_execbuffer.c    |   4 +-
 drivers/gpu/drm/i915/gem/i915_gem_object.c    |   5 +-
 drivers/gpu/drm/i915/gt/selftest_reset.c      |   7 +-
 drivers/gpu/drm/i915/gt/uc/intel_guc_log.c    |  11 +-
 drivers/gpu/drm/i915/i915_cmd_parser.c        |   4 +-
 drivers/gpu/drm/i915/i915_drv.c               |   2 -
 drivers/gpu/drm/i915/i915_gpu_error.c         |   8 +-
 drivers/gpu/drm/i915/i915_memcpy.h            |  34 --
 .../drm/i915/selftests/intel_memory_region.c  |   7 +-
 drivers/gpu/drm/ttm/ttm_bo.c                  |  61 +-
 drivers/gpu/drm/ttm/ttm_bo_util.c             | 547 ++++++++++++------
 drivers/gpu/drm/ttm/ttm_tt.c                  |   9 +
 include/drm/drm_memcpy.h                      |  41 ++
 include/drm/ttm/ttm_bo_driver.h               |  94 +++
 include/drm/ttm/ttm_tt.h                      |  10 +
 20 files changed, 614 insertions(+), 270 deletions(-)
 rename drivers/gpu/drm/{i915/i915_memcpy.c => drm_memcpy.c} (84%)
 delete mode 100644 drivers/gpu/drm/i915/i915_memcpy.h
 create mode 100644 include/drm/drm_memcpy.h