[Mesa-dev] [PATCH 0/4] panfrost: Expose HW counters through the pipe_query iface

[Boris Brezillon]

Hello,

This is an attempt at exposing Mali Midgard/Bifrost perf counters in a
more or less generic way so that they can be used through the
pipe_query interface. That should allow one to dump/display those
counters using gallium-hud or any tool/lib that uses the
GL_AMD_performance_monitor API (apitrace) to query HW counters.

This series adds new hooks to the panfrost_driver driver interface so
that both the drm and non-drm drivers can be plugged (I only developped
the glue for the DRM driver so far, but can work on the non-DRM driver
if needed).

Only T860 counters are exposed so far, as this is the platform I tested
on. It's been tested with gallium-hud in invisible mode (the driver
doesn't support RECT texture, which is needed to display the HUD):

List all available counters:

# GALLIUM_HUD_VISIBLE=false GALLIUM_HUD=help <app>

Dump counters in a directory:

# GALLIUM_HUD_VISIBLE=false GALLIUM_HUD_DUMP_DIR=<dump-dir> GALLIUM_HUD=<counter1>,<counter2>,... <app>

Should also work with apitrace, but I haven't tested yet.

Regards,

Boris

Boris Brezillon (4):
  drm-uapi: panfrost: Add perfcnt related bits
  panfrost: Expose perfcounters through the pipe_query interface
  panfrost: Implement perfcnt hooks in the DRM driver
  panfrost: Add T860 counters

 include/drm-uapi/panfrost_drm.h            | 122 +++++++
 src/gallium/drivers/panfrost/meson.build   |   3 +-
 src/gallium/drivers/panfrost/pan_context.c |  80 ++++-
 src/gallium/drivers/panfrost/pan_context.h |   9 +-
 src/gallium/drivers/panfrost/pan_drm.c     | 245 +++++++++++++
 src/gallium/drivers/panfrost/pan_perfcnt.c | 389 +++++++++++++++++++++
 src/gallium/drivers/panfrost/pan_perfcnt.h |  36 ++
 src/gallium/drivers/panfrost/pan_screen.c  |   9 +-
 src/gallium/drivers/panfrost/pan_screen.h  |  41 +++
 9 files changed, 926 insertions(+), 8 deletions(-)
 create mode 100644 src/gallium/drivers/panfrost/pan_perfcnt.c
 create mode 100644 src/gallium/drivers/panfrost/pan_perfcnt.h

-- 
2.20.1