Submodule hw_module missing?

[rschoene]

When enabling gnahw for cmake (via GNA_BUILD_WITH_HW_MODULE_ENABLED), i get the following error:

   HW submodule was not initialized properly.

   File <.../gna/gna/build/hw_module/CMakeLists.txt> not found.

   Try using 'git submodule update --init --recursive' to load all submodules.

I checked and cannot find any submodules.
I use Ubuntu 22.04, Linux 5.19.1, an Intel i9-12900K and a version of the module discussed at https://lore.kernel.org/lkml/20210216160525.5028-1-maciej.kwapulinski@linux.intel.com/T/#u.

[krzysztofjozwiak]

Hi, currently hw_module is Intel proprietary and not available in public as open-source. But you can still use GNA in HW mode with limited functionality.
Regards,
Krzysztof

[rschoene]

I'll leave this issue open (as long as hw_module is n/a). The answer will help whenever someone stumbles over this problem and can reduce incoming issues ;) .

[ctrlaltca]

i just stumbled on this issue.
After fixing a few mistakes in the cmake files (eg. hardcoded drm/drm.h include path, hardcoded wrong libgna path in samples), i run the sample just to get this message:

➜  b git:(main) ✗ ./bin/sample01/sample01 
GNA Hardware Device not available, using Gna2DeviceVersionSoftwareEmulation.

EDIT: turns out the kernel module i was using from https://storage.openvinotoolkit.org/drivers/gna/ is old, and this repo needs a more recent version of the kernel module ported to the DRM subsystem. I've found the submission in dri-devel, but i guess i'll wait for it to be merged upstream.