Enable DRM Acceleration and Intel VPU

[rlmenge]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

---

Summary

New feature.
This enables the Intel VPU on x86_64. VPU stands for Versatile Processing Unit. This driver is used in the Intel Core Ultra processors to support their AI processing. This driver leans on the DRM Accel framework which requires the Direct Rendering Manager (DRM) subsystem.

Since AI accelerators share many similarities with GPUs, they leverage the existing DRM infrastructure. Therefore as a result of https://github.com/microsoft/azurelinux/pull/10612/files, the accelerator drivers need to be packaged with the subpackage kernel-drivers-gpu. If in the generic kernel package, it will result in errors when modprobed:

$ insmod /lib/modules/6.6.57.1-8.azl3/kernel/drivers/accel/ivpu/intel_vpu.ko.xz
insmod: ERROR: could not insert module /lib/modules/6.6.57.1-8.azl3/kernel/drivers/accel/ivpu/intel_vpu.ko.xz: Unknown symbol in module
$ dmesg 
...
[ 3926.249382] intel_vpu: Unknown symbol drm_poll (err -2)
[ 3926.249393] intel_vpu: Unknown symbol drm_dev_enter (err -2)
[ 3926.249401] intel_vpu: Unknown symbol accel_open (err -2)
[ 3926.249412] intel_vpu: Unknown symbol drm_gem_get_pages (err -2)
[ 3926.249416] intel_vpu: Unknown symbol drm_mm_remove_node (err -2)
[ 3926.249438] intel_vpu: Unknown symbol drm_mm_takedown (err -2)
...

The specific changes being added are
DRM_ACCEL=y
Kconfig
DRM_ACCEL_IVPU=m
Kconfig

Change Log

• Enable Intel VPU

Does this affect the toolchain?

YES

Associated issues

• https://microsoft.visualstudio.com/OS/_workitems/edit/54118255

Test Methodology

• Pipeline build id: https://dev.azure.com/mariner-org/mariner/_build/results?buildId=703448&view=results

Booted in Azure

Welcome to Microsoft Azure Linux 3.0 (x86_64)
Last login: Wed Jan  1 02:00:18 2025 from 20.230.14.159
azureuser@test-ivpu3 [ ~ ]$ systemd-analyze
Startup finished in 1.504s (kernel) + 1.339s (initrd) + 7.095s (userspace) = 9.939s 
graphical.target reached after 6.729s in userspace.
azureuser@test-ivpu3 [ ~ ]$ uname -a
Linux test-ivpu3 6.6.57.1-8.azl3 #1 SMP PREEMPT_DYNAMIC Wed Jan  1 01:09:01 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
azureuser@test-ivpu3 [ ~ ]$ sudo modprobe intel_vpu
azureuser@test-ivpu3 [ ~ ]$ modinfo intel_vpu
filename:       /lib/modules/6.6.57.1-8.azl3/kernel/drivers/accel/ivpu/intel_vpu.ko.xz
version:        1.0.
license:        GPL and additional rights
description:    Driver for Intel Versatile Processing Unit (VPU)
author:         Intel Corporation
firmware:       intel/vpu/vpu_40xx_v0.0.bin
firmware:       intel/vpu/vpu_37xx_v0.0.bin
import_ns:      DMA_BUF
srcversion:     A172A7EE27D5CE1E449C83D
alias:          pci:v00008086d0000643Esv*sd*bc*sc*i*
alias:          pci:v00008086d0000AD1Dsv*sd*bc*sc*i*
alias:          pci:v00008086d00007D1Dsv*sd*bc*sc*i*
depends:        drm
retpoline:      Y
intree:         Y
name:           intel_vpu
vermagic:       6.6.57.1-8.azl3 SMP preempt mod_unload modversions 
sig_id:         PKCS#7
signer:         
sig_key:        
sig_hashalgo:   unknown
signature:      
parm:           disable_recovery:Disables recovery when VPU hang is detected (bool)
parm:           tdr_timeout_ms:Timeout for device hang detection, in milliseconds, 0 - default (uint)
parm:           ivpu_log_level:VPU firmware default trace level: debug=1 info=2 warn=3 error=4 fatal=5 (uint)
parm:           firmware:VPU firmware binary in /lib/firmware/.. (charp)
parm:           dbg_mask:Driver debug mask. See IVPU_DBG_* macros. (int)
parm:           test_mode:Test mode: 0 - normal operation, 1 - fw unit test, 2 - null hw (int)
parm:           pll_min_ratio:Minimum PLL ratio used to set VPU frequency (byte)
parm:           pll_max_ratio:Maximum PLL ratio used to set VPU frequency (byte)
parm:           disable_mmu_cont_pages:Disable MMU contiguous pages optimization (bool)
azureuser@test-ivpu3 [ ~ ]$ lsmod | grep intel_vpu
intel_vpu             192512  0
drm                   663552  1 intel_vpu

Arm64 (does not have ivpu)

Welcome to Microsoft Azure Linux 3.0 (aarch64)
Last login: Tue Dec 31 23:41:09 2024 from 172.200.70.35
azureuser@marinerV3960 [ ~ ]$ uname -r
6.6.57.1-8.azl3
azureuser@marinerV3960 [ ~ ]$ uname -a
Linux marinerV3960 6.6.57.1-8.azl3 #1 SMP Mon Dec 23 23:18:53 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux
azureuser@marinerV3960 [ ~ ]$ systemd-analyze
Startup finished in 2.169s (kernel) + 1.405s (initrd) + 7.049s (userspace) = 10.624s 
graphical.target reached after 6.784s in userspace.
azureuser@marinerV3960 [ ~ ]$