>ppt0@pci0:0:20:0:       class=0x0c0330 card=0x21f317aa chip=0x1e318086
Passthrough stub driver, part of vmm, controls the USB controller.

Can you share output of /usr/sbin/devinfo from FreeBSD host, highlighting
the usb mass/flash device in tree?

Regards,
Anish

On Mon, Dec 21, 2015 at 7:44 PM, Sergey Manucharian <s...@ara-ler.com> wrote:

> Excerpts from Peter Grehan's message from Tue 22-Dec-15 13:09:
> > Hi Sergey,
> >
> > > This is pretty reproducible:
> > >
> > > I pass trough a PCI device (USB controller) to a Linux guest. It works
> > > properly. Then I halt the VM, make sure that bhyve destroyed it and run
> > > Windows guest with the same PCI device passed-through.
> > >
> > > Windows device manager does show the device, however, e.g. a flash
> drive
> > > plugged in is not presented to Windows, instead it's being processed by
> > > FreeBSD.
> > >
> > > After that it does not work in Linux guest as well. Kernel module (vmm)
> > > unloading and reloading does not help.
> >
> >   The flash drive being processed by FreeBSD would indicate that it has
> > ownership of the device. Would you be able to try a 'pciconf -vl' after
> > the Linux guest exists, and after the Windows guest exits ?
>
> OK, I've experimented more and found that even with the same Linux VM
> after halting it once, the pass-through device doesn't work when that
> Linux guest is restarted again.
>
> It looks that both host and guest report exactly the same data before and
> after restarting the guest:
>
> Linux - first run:
> =================
> $ lspci -v
> 00:07.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset
> Family USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI])
>         Subsystem: Lenovo Device 21f3
>         Flags: bus master, medium devsel, latency 0, IRQ 24
>         Memory at c0010000 (64-bit, prefetchable) [size=64K]
>         Capabilities: [70] Power Management version 2
>         Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
>         Kernel driver in use: xhci_hcd
>
> $ lsusb
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 002: ID 0781:5530 SanDisk Corp. Cruzer
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> FreeBSD when Linux is running first time:
> =========================================
> $ pciconf -v
> ppt0@pci0:0:20:0:       class=0x0c0330 card=0x21f317aa chip=0x1e318086
> rev=0x04 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '7 Series/C210 Series Chipset Family USB xHCI Host
> Controller'
>     class      = serial bus
>     subclass   = USB
>
> Linux - second run:
> ===================
> $ lspci -v
> 00:07.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset
> Family USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI])
>         Subsystem: Lenovo Device 21f3
>         Flags: bus master, medium devsel, latency 0, IRQ 24
>         Memory at c0010000 (64-bit, prefetchable) [size=64K]
>         Capabilities: [70] Power Management version 2
>         Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
>         Kernel driver in use: xhci_hcd
>
> FreeBSD when Linux is running second time:
> ==========================================
> $ pciconf -lv
> ppt0@pci0:0:20:0:       class=0x0c0330 card=0x21f317aa chip=0x1e318086
> rev=0x04 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '7 Series/C210 Series Chipset Family USB xHCI Host
> Controller'
>     class      = serial bus
>     subclass   = USB
>
>
> --
> Thanks,
> Sergey
>
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