drm/msm/adreno: dump scratch regs and other info on hang

Browse source

Dump a bit more info when the GPU hangs, without having hang_debug
enabled (which dumps a *lot* of registers).  Also dump the scratch
registers, as they are useful for determining where in the cmdstream
the GPU hung (and they seem always safe to read when GPU has hung).

Note that the freedreno gallium driver emits increasing counter values
to SCRATCH6 (to identify tile #) and SCRATCH7 (to identify draw #), so
these two in particular can be used to "triangulate" where in the
cmdstream the GPU hung.

Signed-off-by: Rob Clark <robdclark@gmail.com>

...

This commit is contained in:

Rob Clark 2015-04-19 10:14:09 -04:00

parent 3f05eb4e3f

commit 2671618551

4 changed files with 25 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/gpu/drm/msm/adreno/a3xx_gpu.c

View file

3

drivers/gpu/drm/msm/adreno/a4xx_gpu.c

View file

21

drivers/gpu/drm/msm/adreno/adreno_gpu.c

View file

1

drivers/gpu/drm/msm/adreno/adreno_gpu.h

View file