Sound card passthrough debug data

groups.txt

IOMMU Group 17:
	07:00.0 Audio device [0403]: Creative Labs EMU20k2 [Sound Blaster X-Fi Titanium Series] [1102:000b] (rev 03)

lspci.txt

07:00.0 Audio device: Creative Labs EMU20k2 [Sound Blaster X-Fi Titanium Series] (rev 03)
	Subsystem: Creative Labs Device 0044
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 9
	IOMMU group: 17
	Region 0: Memory at e3200000 (64-bit, non-prefetchable) [size=64K]
	Region 2: Memory at e3000000 (64-bit, non-prefetchable) [size=2M]
	Region 4: Memory at e2000000 (64-bit, non-prefetchable) [size=16M]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D3 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Capabilities: [58] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 0.000W
		DevCtl:	CorrErr- NonFatalErr- FatalErr- UnsupReq-
			RlxdOrd+ ExtTag- PhantFunc- AuxPwr+ NoSnoop+
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
			ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp-
		LnkCtl:	ASPM Disabled; RCB 64 bytes, Disabled- CommClk-
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s (ok), Width x1 (ok)
			TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range ABCD, TimeoutDis- NROPrPrP- LTR-
			 10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt- EETLPPrefix-
			 EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
			 FRS- TPHComp- ExtTPHComp-
			 AtomicOpsCap: 32bit- 64bit- 128bitCAS-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR- OBFF Disabled,
			 AtomicOpsCtl: ReqEn-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete- EqualizationPhase1-
			 EqualizationPhase2- EqualizationPhase3- LinkEqualizationRequest-
			 Retimer- 2Retimers- CrosslinkRes: unsupported
	Kernel driver in use: vfio-pci
	Kernel modules: snd_ctxfi

runvm.sh

tapdev=macvtap3
mac=52:54:00:e2:d6:77

if ! test -e /sys/class/net/$tapdev; then
  ip l add name $tapdev link eth0 type macvtap mode bridge
fi
ip l set $tapdev addr $mac
ip l set $tapdev up

/run/libvirt/nix-emulators/qemu-system-x86_64 \
 -name guest=win7,debug-threads=on \
 -machine pc-q35-5.1,mem-merge=on,pflash0=pflash0-blkdev,pflash1=pflash1-blkdev \
 -accel kvm,kernel-irqchip=on \
 -cpu host,kvm=off \
 -m 12288 \
 -smp 4,sockets=1,cores=2,threads=2,maxcpus=4 \
 -monitor stdio \
 -nodefaults \
 -cdrom /var/lib/libvirt/images/virtio-win-0.1.189.iso \
 -vga qxl \
 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on \
 -netdev tap,fd=7,id=hostnet0 \
 -blockdev node-name=os-storage,driver=host_device,filename=/dev/zvol/zroot/windows7-new,discard=unmap,aio=native,cache.direct=on \
 -blockdev node-name=pflash0-blkdev,driver=file,filename=/run/libvirt/nix-ovmf/OVMF_CODE.fd,discard=unmap,read-only=on \
 -blockdev node-name=pflash1-blkdev,driver=file,filename=OVMF_VARS.fd,discard=unmap,read-only=off \
 -device pcie-root-port,bus=pcie.0,multifunction=on,port=1,chassis=1,id=rp0 \
 -device ich9-usb-ehci1,id=usb0,bus=rp0,addr=00.0,multifunction=on \
 -device virtio-net,netdev=hostnet0,id=net0,mac=$mac,bus=rp0,addr=00.1 \
 -device virtio-blk-pci,drive=os-storage,bootindex=1,id=virtio-disk0,bus=rp0,addr=00.2 \
 -device pcie-root-port,bus=pcie.0,port=2,chassis=2,id=rp1 \
 -device vfio-pci,host=0000:07:00.0,id=hostdevxfi,bus=rp1 \
 -device usb-host,vendorid=0x1b1c,productid=0x1a16 \
7<>/dev/tap$(< /sys/class/net/$tapdev/ifindex)

system.txt

Motherboard: Intel DX79TO
CPU: Intel Core i7 3820
RAM: 32GB
OS: NixOS 21.03 Kernel 5.4.65
QEMU version: 5.1.0