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drm/amd/display: Introduce program_perfmon hwss hook and BLS perfmon sequence

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[Why]
The hubbub perfmon peak-bandwidth path used a monolithic function
combining counter configuration and enable in one call, and wrote results
into a caller-supplied struct outside the dc_state model. A BLS-driven
approach builds the measurement from stateless primitives, gates it to OTG
frame boundaries, and stores results in dc_state.

[How]
- Rename the peak-BW vtable members from "unbounded_bandwidth" to
  "out_of_order_bandwidth" and split them into arm and start operations.
- Add the full set of perfmon BLS primitives - param structs, union
  members, enum entries, executors, and hwss_add_* builders - for reset,
  arm, every start_measuring_* and every get_* operation.
- Add dc_probe_status (valid, type, result union) plus probe_status[] to
  dc_state.
- Replace the measure_memory_qos hook with program_perfmon(dc, context),
  which writes results into probe_status[].
- dc_get_qos_info no longer calls the removed hook.

Reviewed-by: Dominik Kaszewski <dominik.kaszewski@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2026-06-18 18:05:07 -04:00 • committed by Alex Deucher
commit 85df288438
6 changed files with 562 additions and 23 deletions
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