This series refactors i915's stolen memory region to use ttm.
v2: handle disabled stolen similar to legacy version. relying on ttm to fail allocs works fine, but is dmesg noisy and causes testing dmesg warning regressions.
v3: rebase to latest drm-tip. fix v2 code refactor which could leave a buffer pinned. locally passes fftl again now.
v4: - Allow memory regions creators to do allocation. Allows stolen region to track it's own reservations. - Pre-reserve first page of stolen mem (add back WaSkipStolenMemoryFirstPage:bdw+) - Improve commit descritpion for "drm/i915: sanitize mem_flags for stolen buffers" - replace i915_gem_object_pin_pages_unlocked() call with manual locking and pinning. this avoids ww ctx class reuse during context creation -> ring vma obj alloc.
v5: - detect both types of stolen as stolen buffers in "drm/i915: sanitize mem_flags for stolen buffers" - in stolen_object_init limit page size to mem region minimum. The range allocator expects the page_size to define the alignment
v6: - Share first 4 patches from ttm for internal series as generic i915 ttm fixes - Drop patch 4 from v5. We don't need separate object ops just to satisfy test interfaces. The tests have now been fixed via checking whether the memory region is private to decide whether to mmap - Add new buffer pin alloc flag to allow creation of buffers in their final ttm placement instead of deferring until get_pages. This fixes legacy fallback paths for buffer allocations during stolen memory pressure.
Robert Beckett (10): 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/gem: selftest should not attempt mmap of private regions drm/i915: instantiate ttm ranger manager for stolen memory drm/i915: sanitize mem_flags for stolen buffers drm/i915: ttm move/clear logic fix drm/i915: allow memory region creators to alloc and free the region drm/i915/ttm: add buffer pin on alloc flag drm/i915: stolen memory use ttm backend
drivers/gpu/drm/i915/display/intel_fbc.c | 78 ++-- drivers/gpu/drm/i915/gem/i915_gem_object.c | 1 + .../gpu/drm/i915/gem/i915_gem_object_types.h | 16 +- drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 440 +++++++----------- drivers/gpu/drm/i915/gem/i915_gem_stolen.h | 21 +- drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 29 +- drivers/gpu/drm/i915/gem/i915_gem_ttm.h | 7 + drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 47 +- .../drm/i915/gem/selftests/i915_gem_mman.c | 3 + drivers/gpu/drm/i915/gt/intel_rc6.c | 4 +- drivers/gpu/drm/i915/gt/selftest_reset.c | 16 +- drivers/gpu/drm/i915/i915_debugfs.c | 7 +- drivers/gpu/drm/i915/i915_drv.h | 5 - drivers/gpu/drm/i915/intel_memory_region.c | 16 +- drivers/gpu/drm/i915/intel_memory_region.h | 2 + drivers/gpu/drm/i915/intel_region_ttm.c | 80 +++- drivers/gpu/drm/i915/intel_region_ttm.h | 8 +- drivers/gpu/drm/i915/selftests/mock_region.c | 3 +- 18 files changed, 414 insertions(+), 369 deletions(-)