Enable accelerated moves and clearing on DG2. On such HW we have minimum page size restrictions when accessing LMEM from the GTT, where we now have to use 64K GTT pages or larger. With the ppGTT the page-table also has a slightly different layout from past generations when using the 64K GTT mode(which is still enabled on via some PDE bit), where it is now compacted down to 32 qword entries. Note that on discrete the paging structures must also be placed in LMEM, and we need to able to modify them via the GTT itself(see patch 7), which is one of the complications here.
The series needs to be applied on top of the DG2 enabling branch: https://cgit.freedesktop.org/~ramaling/linux/log/?h=dg2_enabling_ww49.3
Patches 2, 7 and 8 have a dependency on patches in that branch, but the rest can likely already land if the direction makes sense.
Matthew Auld (8): drm/i915/migrate: don't check the scratch page drm/i915/gtt: add xehpsdv_ppgtt_insert_entry drm/i915/gtt: add gtt mappable plumbing drm/i915/migrate: fix offset calculation drm/i915/migrate: fix length calculation drm/i915/selftests: handle object rounding drm/i915/migrate: add acceleration support for DG2 drm/i915/migrate: turn on acceleration for DG2
drivers/gpu/drm/i915/gem/i915_gem_context.c | 4 +- .../gpu/drm/i915/gem/selftests/huge_pages.c | 2 +- drivers/gpu/drm/i915/gt/gen6_ppgtt.c | 2 +- drivers/gpu/drm/i915/gt/gen8_ppgtt.c | 53 ++++- drivers/gpu/drm/i915/gt/gen8_ppgtt.h | 1 + drivers/gpu/drm/i915/gt/intel_ggtt.c | 2 +- drivers/gpu/drm/i915/gt/intel_gt.c | 2 +- drivers/gpu/drm/i915/gt/intel_gtt.c | 7 + drivers/gpu/drm/i915/gt/intel_gtt.h | 9 + drivers/gpu/drm/i915/gt/intel_migrate.c | 196 ++++++++++++++---- drivers/gpu/drm/i915/gt/intel_ppgtt.c | 17 +- drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 2 +- drivers/gpu/drm/i915/gt/selftest_migrate.c | 1 + drivers/gpu/drm/i915/gvt/scheduler.c | 2 +- drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 4 +- 15 files changed, 241 insertions(+), 63 deletions(-)