USB controller passthrough as PCI

[skylowe]

Hi.

on AMD platform - W11 guest - trying to passthrough USB - used to work a few proxmox versions ago - not sure where to start looking

0b:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller [1022:149c] (prog-if 30 [XHCI])
Subsystem: Gigabyte Technology Co., Ltd Matisse USB 3.0 Host Controller [1458:5007]
Flags: bus master, fast devsel, latency 0, IRQ 87, IOMMU group 27
Memory at fc800000 (64-bit, non-prefetchable) [size=1M]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [64] Express Endpoint, MSI 00
Capabilities: [a0] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [c0] MSI-X: Enable+ Count=8 Masked-
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [2a0] Access Control Services
Capabilities: [370] Transaction Processing Hints
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci

when adding it to guest hardware config it causes instability or just causes guest to hang

vfio.conf contains 1022:149c

grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on video=vesafb: off hugepagesz=1G hugepages=20 acpi_enforce_resources=lax initcall_blacklist=sysfb_init"

Any ideas please...

 

[leesteken]

Hi.

on AMD platform - W11 guest - trying to passthrough USB - used to work a few proxmox versions ago - not sure where to start looking

0b:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller [1022:149c] (prog-if 30 [XHCI])
Subsystem: Gigabyte Technology Co., Ltd Matisse USB 3.0 Host Controller [1458:5007]
Flags: bus master, fast devsel, latency 0, IRQ 87, IOMMU group 27
Memory at fc800000 (64-bit, non-prefetchable) [size=1M]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [64] Express Endpoint, MSI 00
Capabilities: [a0] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [c0] MSI-X: Enable+ Count=8 Masked-
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [2a0] Access Control Services
Capabilities: [370] Transaction Processing Hints
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci

when adding it to guest hardware config it causes instability or just causes guest to hang

vfio.conf contains 1022:149c

Try adding softdep xhci_pci pre: vfio-pci, to make sure vfio-pci is loaded before xhci_pci. I used this for another USB controller (ASMedia 1b21:3241).
I do have a USB controller identical to yours (connected to a 5000-series CPU) that works fine with a Linux VM without this and I can even switch it back to working on the Proxmox host.

 

[skylowe]

Sort for the slow feedback - your suggestion seems to have worked