This is a revival of the patch series to support triggered perf query reports from here - https://patchwork.freedesktop.org/series/83831/
The patches were not pushed earlier because corresponding UMD changes were missing. This revival addresses UMD changes in GPUvis for this series. GPUvis uses the perf library in igt-gpu-tools. Changes to the library are here - https://patchwork.freedesktop.org/series/93355/
GPUvis changes will be posted as a PR once the above library and kernel changes are pushed.
Summary of the feature:
Current platforms provide MI_REPORT_PERF_COUNT to query a snapshot of perf counters from a batch. This mechanism does not have consistent support on all engines for newer platforms. To support perf query, all new platforms use a mechanism to trigger OA report snapshots into the OA buffer by writing to a HW register from a batch. To lookup this report in the OA buffer quickly, the OA buffer is mmapped into the user space.
This series implements the new query mechanism.
Signed-off-by: Umesh Nerlige Ramappa umesh.nerlige.ramappa@intel.com
Chris Wilson (3): drm/i915/gt: Refactor _wa_add to reuse wa_index and wa_list_grow drm/i915/gt: Check for conflicting RING_NONPRIV drm/i915/gt: Enable dynamic adjustment of RING_NONPRIV
Piotr Maciejewski (1): drm/i915/perf: Ensure observation logic is not clock gated
Umesh Nerlige Ramappa (4): drm/i915/gt: Lock intel_engine_apply_whitelist with uncore->lock drm/i915/perf: Whitelist OA report trigger registers drm/i915/perf: Whitelist OA counter and buffer registers drm/i915/perf: Map OA buffer to user space for gen12 performance query
drivers/gpu/drm/i915/gem/i915_gem_mman.c | 2 +- drivers/gpu/drm/i915/gem/i915_gem_mman.h | 2 + drivers/gpu/drm/i915/gt/intel_workarounds.c | 269 +++++++++++++----- drivers/gpu/drm/i915/gt/intel_workarounds.h | 7 + .../gpu/drm/i915/gt/selftest_workarounds.c | 237 +++++++++++++++ drivers/gpu/drm/i915/i915_perf.c | 228 ++++++++++++++- drivers/gpu/drm/i915/i915_perf_types.h | 8 + drivers/gpu/drm/i915/i915_reg.h | 30 +- include/uapi/drm/i915_drm.h | 33 +++ 9 files changed, 728 insertions(+), 88 deletions(-)