[v2,0/1] Expose UCHE_TRAP_BASE value via uapi

Message

Danylo Piliaiev Dec. 3, 2024, 5:40 p.m. UTC

Depends on https://patchwork.freedesktop.org/series/141667/

The parameter would be used in [1] to implement VK_KHR_shader_clock
and GL_ARB_shader_clock. On at least a6xx+, shader could read 64b
ALWAYSON counter from UCHE_TRAP_BASE+0 address.

Downstream driver exposes uche trap base via uapi only on A7XX+.
However, from testing, we could get correct shader clock on A6XX.
The uche trap base value is not used by Mesa for A4XX and A5XX.

[1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29860

Danylo Piliaiev (1):
  drm/msm: Expose uche trap base via uapi

 drivers/gpu/drm/msm/adreno/a4xx_gpu.c   |  6 ++++--
 drivers/gpu/drm/msm/adreno/a5xx_gpu.c   | 10 ++++++----
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 12 +++++++-----
 drivers/gpu/drm/msm/adreno/adreno_gpu.c |  5 +++++
 drivers/gpu/drm/msm/adreno/adreno_gpu.h |  2 ++
 include/uapi/drm/msm_drm.h              |  1 +
 6 files changed, 25 insertions(+), 11 deletions(-)