[Bug 268428] Without the proper gop/vbios ROM to assign to my intel gpu UHD Graphics 630 it gives the error "bhyve: gvt_d_setup_opregion: Unable to get OpRegion base and length "

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268428

            Bug ID: 268428
           Summary: Without the proper gop/vbios ROM to assign to my intel
                    gpu UHD Graphics 630 it gives the error "bhyve:
                    gvt_d_setup_opregion: Unable to get OpRegion base and
                    length "
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: marietto2008@gmail.com

Hello FreeBSD Virtualization team,

I'm trying to boot my intel gpu model UHD 630 adding a GOP driver or a VBIOS
rom directly between the bhyve parameters like this :

-s 7:0,passthru,0/2/0,rom=UHD-Graphics-630-vbios.rom

because I've read that it can be done,according with your documentation :

https://reviews.freebsd.org/D26209?id=76277

Anyway,I'm not able to find the proper rom file. I went on the nvidia forum and
I've been helped by an nvidia developer that explained to me how the generic
situation for this user case is. He is not a bhyve developer,so the information
that he gave to me isn't enough for me to understand what I should do. You can
read our discussion here :

https://forums.developer.nvidia.com/t/im-failing-trying-to-configure-the-framebuffer-as-default-graphic-adapter-and-the-nvidia-geforce-rtx-2080-ti-as-prime-render-offload/236365/23

We haven't reached a conclusion yet,so I would like to have some clarifications
from you. He says that there is no gop/vbios ROM that I can use,but If I don't
use it my gpu won't work,giving the errors that you see inside this log file :

https://pastebin.ubuntu.com/p/9b9DpZrfpg/

they happen only when I create a Linux VM. Windows 11 accept the gpu without
complains. 

I'm running FreeBSD 13.1. Actually on my PC there are 3 graphics cards :

a) CoffeeLake-S GT2 [UHD Graphics 630]

b) two nvidia graphic cards :

1) GTX 1060
2) RTX 2080 ti

on the BIOS I'm using the GTX 1060 as default graphic card and I've disabled
the CSM mode.

I've added to :

1) /boot/loader.conf

pptdevs="0/2/0 2/0/0 2/0/1 2/0/2 2/0/3"

2) Linux bhyve vm :

bhyve -S -c sockets=1,cores=2,threads=2 -m 4G -w -H -A \
-s 0,hostbridge \
-s 2,virtio-blk,/mnt/$vmdisk1'p2'/bhyve/img/Linux/ubuntu2210.img,bootindex=1 \
-s 5,fbuf,tcp=0.0.0.0:5919,w=1600,h=950,wait \
-s 7:0,passthru,0/2/0 \
-s 10,virtio-net,tap19 \
-s 11,virtio-9p,sharename=/ \
-s 30,xhci,tablet \
-s 31,lpc \
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI_CODE.fd \
vm0:19 < /dev/null & sleep 2 && vncviewer 0:19

where :

00:02.0 Display controller: Intel Corporation CoffeeLake-S GT2 [UHD Graphics
630] (rev 02)

01:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060
3GB] (rev a1)

01:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller
(rev a1)

2:00.0 VGA compatible controller: NVIDIA Corporation TU102 [GeForce RTX 2080
Ti] (rev a1) 

02:00.1 Audio device: NVIDIA Corporation TU102 High Definition Audio Controller
(rev a1) 

02:00.2 USB controller: NVIDIA Corporation TU102 USB 3.1 Host Controller (rev
a1) 

02:00.3 Serial bus controller: NVIDIA Corporation TU102 USB Type-C UCSI
Controller (rev a1)

So,my Intel IGPU is assigned to a Linux guest OS,but it does not work (the
screen remains black).

I tried to boot my intel gpu model UHD 630 adding a GOP driver or a VBIOS rom
directly between the bhyve parameters like this :

-s 7:0,passthru,0/2/0,rom=UHD-Graphics-630-vbios.rom

because I've read that it can be done,according with your documentation :

https://reviews.freebsd.org/D26209?id=76277

Anyway,I'm not able to find the proper rom file. I went on the nvidia forum and
I've been helped by an nvidia developer that explained to me how the generic
situation for this user case is. He is not a bhyve developer,so the information
that he gave to me isn't enough for me to understand what I should do. You can
read our discussion here :

https://forums.developer.nvidia.com/t/im-failing-trying-to-configure-the-framebuffer-as-default-graphic-adapter-and-the-nvidia-geforce-rtx-2080-ti-as-prime-render-offload/236365/23

We haven't reached a conclusion yet,so I would like to have some clarifications
from you. He says that there is no gop/vbios ROM that I can use,but If I don't
use it my gpu won't work as you can see reading the thread above. Please help
me. Thanks. Regards.

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