[v8,0/5] discrete card 64K page support

Message

Bob Beckett Feb. 8, 2022, 8:34 p.m. UTC

This series continues support for 64K pages for discrete cards.
It supersedes the 64K patches from https://patchwork.freedesktop.org/series/95686/#rev4
Changes since that series:

- set min alignment for DG2 to 2MB in i915_address_space_init
- replace coloring with simpler 2MB VA alignment for lmem buffers
        - enforce alignment to 2MB for lmem objects on DG2 in i915_vma_insert
        - expand vma reservation to round up to 2MB on DG2 in i915_vma_insert
- add alignment test

v2: rebase and fix for async vma that landed
v3:
	* fix uapi doc typos
	* add needs_compact_pt flag patch
	* cleanup vma expansion to use vm->min_alignment instead of hard coding
v4:
	* fix err return in igt_ppgtt_compact test
	* placate ci robot with explicit enum conversion in misaligned_pin
	* remove some blank lines
v5:
	* fix obj alignment requirements querying for internal buffers that
	  have no memory region associated. (fixes v3 bug)
v6:
	* use NEEDS_COMPACT_PT inead of hard coding in misalignment test
	* tiled_blits_create correctly pick largest required alignment
	* minor doc formatting
v7:
	* use i915_vma_unbind_unlocked in misalignment test
v8:
	* fix misalignment test corner case for uninitialized stolen smem
	* fix misalignment test corner case for single page gtt hole
	* fix array overflow in i915_vm_min_alignment for mock region

Reviewed-by: Thomas Hellström <[e-mail]>

Matthew Auld (3):
  drm/i915: enforce min GTT alignment for discrete cards
  drm/i915: support 64K GTT pages for discrete cards
  drm/i915/uapi: document behaviour for DG2 64K support

Ramalingam C (1):
  drm/i915: add needs_compact_pt flag

Robert Beckett (1):
  drm/i915: add gtt misalignment test

 .../gpu/drm/i915/gem/selftests/huge_pages.c   |  60 +++++
 .../i915/gem/selftests/i915_gem_client_blt.c  |  21 +-
 drivers/gpu/drm/i915/gt/gen8_ppgtt.c          | 108 ++++++++-
 drivers/gpu/drm/i915/gt/intel_gtt.c           |  12 +
 drivers/gpu/drm/i915/gt/intel_gtt.h           |  25 ++
 drivers/gpu/drm/i915/gt/intel_ppgtt.c         |   1 +
 drivers/gpu/drm/i915/i915_drv.h               |  11 +-
 drivers/gpu/drm/i915/i915_pci.c               |   2 +
 drivers/gpu/drm/i915/i915_vma.c               |   9 +
 drivers/gpu/drm/i915/intel_device_info.h      |   1 +
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 222 +++++++++++++++---
 include/uapi/drm/i915_drm.h                   |  44 +++-
 12 files changed, 464 insertions(+), 52 deletions(-)