Hi,
I'm playing a little bit with KVM and SR-IOV and OpenBSD doesn't
recognize 'Intel Corporation 82576 Virtual Function'[1], ie. VF on
my Intel 82756 dual-port network card activated on a Linux box.
...
vendor "Intel", unknown product 0x10ca (class network subclass ethernet, rev
0x01) at pci0 dev 8 function 0 not configured
^^ sr-iov vfio
...
# pcidump -vvvv 0:8:0
0:8:0: Intel unknown
0x0000: Vendor ID: 8086 Product ID: 10ca
0x0004: Command: 0002 Status: 0010
0x0008: Class: 02 Subclass: 00 Interface: 00 Revision: 01
0x000c: BIST: 00 Header Type: 00 Latency Timer: 00 Cache Line Size: 00
0x0010: BAR mem 64bit addr: 0x00000000febe4000/0x00004000
0x0018: BAR empty (00000000)
0x001c: BAR mem 64bit addr: 0x00000000febe8000/0x00004000
0x0024: BAR empty (00000000)
0x0028: Cardbus CIS: 00000000
0x002c: Subsystem Vendor ID: 8086 Product ID: a04c
0x0030: Expansion ROM Base Address: 00000000
0x0038: 00000000
0x003c: Interrupt Pin: 00 Line: 00 Min Gnt: 00 Max Lat: 00
0x0070: Capability 0x11: Extended Message Signalled Interrupts (MSI-X)
0x00a0: Capability 0x10: PCI Express
Link Speed: unknown (0) / 2.5 GT/s Link Width: x0 / x4
Steps to reproduce:
- boot a Linux box with supported HW with kernel param intel_iommu=on
- echo 1 > /sys/module/vfio_iommu_type1/parameters/allow_unsafe_interrupts
- Linux kernel module vfio_pci should be loaded
- Linux kernel module igb should be loaded
- find SR-IOV device via lspci
- enable 1 VF, eg.: echo 1 > /sys/bus/pci/devices/0000:02:00.1/sriov_numvfs
- check what's pci address of new VF, eg:
virsh nodedev-dumpxml pci_0000_02_00_1 | grep -A1 'virt_function'
- attached VF as 'hostdev' device into OpenBSD KVM VM[2]
j.
[1] http://cateee.net/lkddb/web-lkddb/IGBVF.html
[2]
https://www.suse.com/documentation/sles-12/book_virt/data/sec_libvirt_config_io.html
or
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Deployment_and_Administration_Guide/chap-Guest_virtual_machine_device_configuration.html#sect-PCI_devices-PCI_passthrough
OpenBSD 6.1-current (GENERIC) #10: Fri Apr 21 18:39:14 MDT 2017
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 519933952 (495MB)
avail mem = 499625984 (476MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xf6a00 (9 entries)
bios0: vendor SeaBIOS version "rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org"
date 04/01/2014
bios0: QEMU Standard PC (i440FX + PIIX, 1996)
acpi0 at bios0: rev 0
acpi0: sleep states S5
acpi0: tables DSDT FACP APIC
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel Core i7 9xx (Nehalem Class Core i7), 1866.88 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,SSSE3,CX16,SSE4.1,SSE4.2,x2APIC,POPCNT,HV,NXE,LONG,LAHF
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line
16-way L2 cache
cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 999MHz
ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0: C1(@1 halt!)
"ACPI0006" at acpi0 not configured
"PNP0303" at acpi0 not configured
"PNP0F13" at acpi0 not configured
"PNP0700" at acpi0 not configured
"PNP0501" at acpi0 not configured
"PNP0A06" at acpi0 not configured
"PNP0A06" at acpi0 not configured
"QEMU0002" at acpi0 not configured
"PNP0A06" at acpi0 not configured
pvbus0 at mainbus0: KVM
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02
pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0
wired to compatibility, channel 1 wired to compatibility
pciide0: channel 0 disabled (no drives)
pciide0: channel 1 disabled (no drives)
piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int 9
iic0 at piixpm0
em0 at pci0 dev 2 function 0 "Intel 82574L" rev 0x00: apic 0 int 10, address
00:25:90:3c:66:01
virtio0 at pci0 dev 3 function 0 "Qumranet Virtio Storage" rev 0x00
vioblk0 at virtio0
scsibus1 at vioblk0: 2 targets
sd0 at scsibus1 targ 0 lun 0: <VirtIO, Block Device, > SCSI3 0/direct fixed
sd0: 5120MB, 512 bytes/sector, 10485760 sectors
virtio0: msix shared
uhci0 at pci0 dev 4 function 0 "Intel 82801I USB" rev 0x03: apic 0 int 11
uhci1 at pci0 dev 4 function 1 "Intel 82801I USB" rev 0x03: apic 0 int 10
uhci2 at pci0 dev 4 function 2 "Intel 82801I USB" rev 0x03: apic 0 int 10
ehci0 at pci0 dev 4 function 7 "Intel 82801I USB" rev 0x03: apic 0 int 11
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00
addr 1
virtio1 at pci0 dev 5 function 0 "Qumranet Virtio Memory" rev 0x00
viomb0 at virtio1
virtio1: apic 0 int 10
virtio2 at pci0 dev 6 function 0 "Qumranet Virtio RNG" rev 0x00
viornd0 at virtio2
virtio2: apic 0 int 10
"Intel 6300ESB WDT" rev 0x00 at pci0 dev 7 function 0 not configured
vendor "Intel", unknown product 0x10ca (class network subclass ethernet, rev
0x01) at pci0 dev 8 function 0 not configured
isa0 at pcib0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 1: density unknown
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: console
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0 mux 1
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (b4877c90d361e300.a) swap on sd0b dump on sd0b
