On Wed, Sep 25, 2019 at 7:12 AM Fabio Estevam [off-list ref] wrote:

Hi Adam,

On Wed, Sep 25, 2019 at 6:38 AM Adam Ford [off-list ref] wrote:

quoted

I know it's rather late, but this patch broke the Etnaviv 3D graphics
in my i.MX6Q.

When I try to use the 3D, it returns some errors and the dmesg log
shows some memory allocation errors too:
[    3.682347] etnaviv etnaviv: bound 130000.gpu (ops gpu_ops)
[    3.688669] etnaviv etnaviv: bound 134000.gpu (ops gpu_ops)
[    3.695099] etnaviv etnaviv: bound 2204000.gpu (ops gpu_ops)
[    3.700800] etnaviv-gpu 130000.gpu: model: GC2000, revision: 5108
[    3.723013] etnaviv-gpu 130000.gpu: command buffer outside valid
memory window
[    3.731308] etnaviv-gpu 134000.gpu: model: GC320, revision: 5007
[    3.752437] etnaviv-gpu 134000.gpu: command buffer outside valid
memory window

This looks similar to what was reported at:
https://bugs.freedesktop.org/show_bug.cgi?id=111789

Does it help if you use the same suggestion and pass cma=256M in your
kernel command line?

I tried cma=256M and noticed the cma dump at the beginning didn't
change.  Do we need to setup a reserved-memory node like
imx6ul-ccimx6ulsom.dtsi did?

adam