How can I pass through my sound card on ASRock Z590 Pro4

[TomySLO]

Hi, as the title says, I'd like to pass through the onboard audio controller to my Windows VM, but it's grouped with other things in an IOMMU group and I don't want to try binding the group to VFIO in case that somehow breaks something.

 

Here I'm attaching the IOMMU groups. If I'm not mistaken, it's in IOMMU group 12 - [8086:f0c8] 00:1f.3 Audio device: Intel Corporation Device f0c8 (rev 11)

IOMMU group 0:			 	[8086:9bc5] 00:02.0 VGA compatible controller: Intel Corporation CometLake-S GT2 [UHD Graphics 630] (rev 05)
IOMMU group 1:				[8086:9b43] 00:00.0 Host bridge: Intel Corporation 10th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
IOMMU group 2:				[8086:1901] 00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 05)
 	[10de:1b82] 01:00.0 VGA compatible controller: NVIDIA Corporation GP104 [GeForce GTX 1070 Ti] (rev a1)
 	[10de:10f0] 01:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller (rev a1)
IOMMU group 3:			 	[8086:1911] 00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
IOMMU group 4:			 	[8086:43ed] 00:14.0 USB controller: Intel Corporation Tiger Lake-H USB 3.2 Gen 2x1 xHCI Host Controller (rev 11)
Bus 001 Device 001 Port 1-0		ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002 Port 1-2		ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
Bus 001 Device 003 Port 1-8		ID 06da:ffff Phoenixtec Power Co., Ltd Offline UPS
Bus 001 Device 008 Port 1-12		ID 0781:5583 SanDisk Corp. Ultra Fit
Bus 001 Device 009 Port 1-13		ID 26ce:01a2 ASRock LED Controller
Bus 002 Device 001 Port 2-0		ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002 Port 2-6		ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub
 	[8086:43ef] 00:14.2 RAM memory: Intel Corporation Tiger Lake-H Shared SRAM (rev 11)
IOMMU group 5:			 	[8086:43e0] 00:16.0 Communication controller: Intel Corporation Tiger Lake-H Management Engine Interface (rev 11)
IOMMU group 6:			 	[8086:43d2] 00:17.0 SATA controller: Intel Corporation Device 43d2 (rev 11)
[2:0:0:0]    disk    ATA      ST4000VN008-2DR1 SC60  /dev/sdb   4.00TB
[3:0:0:0]    disk    ATA      ST4000VN008-2DR1 SC60  /dev/sdc   4.00TB
[4:0:0:0]    disk    ATA      ST2000VX008-2E31 CV12  /dev/sdd   2.00TB
[5:0:0:0]    disk    ATA      ST2000LM015-2E81 0001  /dev/sde   2.00TB
[6:0:0:0]    disk    ATA      ST1000DX001-1CM1 CC43  /dev/sdf   1.00TB
IOMMU group 7:				[8086:43c2] 00:1b.0 PCI bridge: Intel Corporation Device 43c2 (rev 11)
IOMMU group 8:				[8086:43c3] 00:1b.3 PCI bridge: Intel Corporation Device 43c3 (rev 11)
IOMMU group 9:				[8086:43c4] 00:1b.4 PCI bridge: Intel Corporation Device 43c4 (rev 11)
IOMMU group 10:				[8086:43b0] 00:1d.0 PCI bridge: Intel Corporation Tiger Lake-H PCI Express Root Port #9 (rev 11)
IOMMU group 11:				[8086:43b4] 00:1d.4 PCI bridge: Intel Corporation Device 43b4 (rev 11)
IOMMU group 12:			 	[8086:4385] 00:1f.0 ISA bridge: Intel Corporation Z590 LPC/eSPI Controller (rev 11)
 	[8086:f0c8] 00:1f.3 Audio device: Intel Corporation Device f0c8 (rev 11)
 	[8086:43a3] 00:1f.4 SMBus: Intel Corporation Tiger Lake-H SMBus Controller (rev 11)
 	[8086:43a4] 00:1f.5 Serial bus controller: Intel Corporation Tiger Lake-H SPI Controller (rev 11)
IOMMU group 13:			 	[1b73:1100] 02:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev 10)
This controller is bound to vfio, connected USB devices are not visible.
IOMMU group 14:			 	[1ac1:089a] 03:00.0 System peripheral: Global Unichip Corp. Coral Edge TPU
IOMMU group 15:			 	[144d:a809] 04:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller 980 (DRAM-less)
This controller is bound to vfio, connected drives are not visible.
IOMMU group 16:			 	[144d:a808] 05:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
[N:0:4:1]    disk    Samsung SSD 970 EVO Plus 2TB__1            /dev/nvme0n1  2.00TB
IOMMU group 17:			 	[10ec:8125] 06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)

 

Thank you for your time