[v4,0/8] drm/i915: ttm for internal

Message

Bob Beckett July 13, 2022, 1:38 p.m. UTC

This series refactors i915's internal buffer backend to use ttm.
It uses ttm's pool allocator to allocate volatile pages in place of the
old code which rolled its own via alloc_pages.
This is continuing progress to align all backends on using ttm.

v2:	- commit message improvements to add detail
	- fix i915_ttm_shrink to purge !is_shmem volatile buffers
	- limit ttm pool allocator to using dma32 on i965G[M]
	- fix mman selftest to always use smem buffers
	- create new internal memory region
	- make internal backend allocate from internal region
	- Fixed various issues with tests and i915 ttm usage as a result
	  of supporting regions other than lmem via ttm.

v3:	- limit i915 ttm default cache_level selection to only trust
	  HAS_SNOOP on DGFX.

v4:	- rebase to drm-tip and handle conflicts

Robert Beckett (8):
  drm/i915/ttm: dont trample cache_level overrides during ttm move
  drm/i915: limit ttm to dma32 for i965G[M]
  drm/i915/ttm: only trust snooping for dgfx when deciding default
    cache_level
  drm/i915: add gen6 ppgtt dummy creation function
  drm/i915: setup ggtt scratch page after memory regions
  drm/i915: allow volatile buffers to use ttm pool allocator
  drm/i915/gem: further fix mman selftest
  drm/i915: internal buffers use ttm backend

 drivers/gpu/drm/i915/gem/i915_gem_internal.c  | 187 +-----------------
 drivers/gpu/drm/i915/gem/i915_gem_internal.h  |   5 -
 drivers/gpu/drm/i915/gem/i915_gem_object.c    |   1 +
 .../gpu/drm/i915/gem/i915_gem_object_types.h  |   1 +
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c       |   8 +-
 drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c  |  13 +-
 .../drm/i915/gem/selftests/i915_gem_mman.c    |  17 +-
 drivers/gpu/drm/i915/gt/gen6_ppgtt.c          |  43 +++-
 drivers/gpu/drm/i915/gt/intel_ggtt.c          |  20 +-
 drivers/gpu/drm/i915/gt/intel_gtt.h           |   1 +
 drivers/gpu/drm/i915/i915_driver.c            |  16 +-
 drivers/gpu/drm/i915/i915_pci.c               |   4 +-
 drivers/gpu/drm/i915/intel_memory_region.c    |   8 +-
 drivers/gpu/drm/i915/intel_memory_region.h    |   2 +
 drivers/gpu/drm/i915/intel_region_ttm.c       |   7 +-
 .../gpu/drm/i915/selftests/mock_gem_device.c  |   2 +-
 16 files changed, 114 insertions(+), 221 deletions(-)