[0/6] Enable TTM for integrated GFX objects in sysmem

Message

Adrián Larumbe Aug. 2, 2022, 4:51 p.m. UTC

This patch series aims at enabling TTM support for system memory objects in
integrated graphics platforms. Whether one wishes to use TTM for sysmem
objects depends on a user-enabled kernel module parameter, so that the
former behaviour of using shmem objects for the system memory region is
kept by default.

The rationale for this change is the benefits in having TTM allocate BO
memory pages for us with alloc_page() rather than shmem.

The first three patches in the series, which the latter three depend on,
are being worked on in parallel by Bob, and handle TTM object cache level
and coherence for sysmem-allocated objects too.

Adrian Larumbe (4):
  drm/i915/ttm: don't overwrite cache_dirty after setting coherency
  drm/i915: Pick the right memory allocation flags for older devices
  drm/i915: Add module param for enabling TTM in sysmem region
  drm/i915: Optionally manage system memory with TTM and poolalloc

Robert Beckett (3):
  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

 drivers/gpu/drm/i915/gem/i915_gem_domain.c    |   4 +-
 drivers/gpu/drm/i915/gem/i915_gem_mman.c      |  21 +-
 drivers/gpu/drm/i915/gem/i915_gem_object.c    |   1 +
 drivers/gpu/drm/i915/gem/i915_gem_object.h    |   2 +-
 .../gpu/drm/i915/gem/i915_gem_object_types.h  |   1 +
 drivers/gpu/drm/i915/gem/i915_gem_phys.c      | 127 +++++++-----
 drivers/gpu/drm/i915/gem/i915_gem_shmem.c     |   4 +-
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c       | 193 +++++++++++++++++-
 drivers/gpu/drm/i915/gem/i915_gem_ttm.h       |  14 ++
 drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c  |  13 +-
 drivers/gpu/drm/i915/gem/i915_gem_userptr.c   |   2 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      |   6 +-
 drivers/gpu/drm/i915/i915_params.c            |   6 +
 drivers/gpu/drm/i915/i915_params.h            |   3 +-
 drivers/gpu/drm/i915/intel_memory_region.c    |   2 +-
 drivers/gpu/drm/i915/intel_region_ttm.c       |   7 +-
 16 files changed, 331 insertions(+), 75 deletions(-)