i915drmkms and Intel Ice Lake GPU

[Roddy González <roddy.gonzalez.89%gmail.com@localhost>]

Hi!

I'm trying to use my Intel GPU, but the system hangs while booting.  Not 
sure if I'm doing something wrong.  I git-cloned linux-firmware and 
added the blob to /libdata/firmware/i915drmkms/i915, like this:

```
# sha256 /libdata/firmware/i915drmkms/i915/icl_dmc_ver1_09.bin
SHA256 (/libdata/firmware/i915drmkms/i915/icl_dmc_ver1_09.bin) = 
aafad1967679baa36e971e5331da73eea31c68239416432df83e71332755dc01

# uname -a
NetBSD pirri 10.0_STABLE NetBSD 10.0_STABLE (GENERIC) #26: Sun Oct 27 
13:56:01 CET 2024  roddy@pirri:/usr/obj/sys/arch/amd64/compile/GENERIC amd64
```

But when I boot the system it starts fine until the screen goes black 
and it hangs. I blindly type <space> + 'reboot' + <enter> and it 
reboots.  If I disable i915drmkms module it boots OK, but using the 
generic framebuffer is not the best experience.

It happens with 10.0 and current kernels. This is the dmesg with the 
last 'netbsd-10' tag: https://pastebin.com/raw/4jtgVBU2

Am I doing something wrong?  Or the GPU is just not supported?  Are 
there an configs I can modify before building the kernel?  Something 
tells me that I may disable (or enable) some energy/ACPI config that is 
not working correctly.  But not sure.  I didn't really understand the 
error messages in dmesg.

Thanks!


Roddy