[Qemu-devel] [Bug 1509336] Re: USB passthru not work with Mac OS X El Capitan

[Okra]

My problem was solved by using the UEFI boot loader and I followed the
instructions at the following links:

https://github.com/tianocore/tianocore.github.io/wiki/How-to-build-OVMF

http://www.linux-kvm.org/downloads/lersek/ovmf-whitepaper-c770f8c.txt

Also remove the "-bios"  option above and added the following options.

-drive if=pflash,format=raw,readonly,file=OVMF_CODE.fd   \
-drive if=pflash,format=raw,file=OVMF_VARS.fd \

Also changed clover to boot with UEFI only. Anyway that has used clover
will know how to change this option.

** Information type changed from Private to Public

** Changed in: qemu
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1509336

Title:
  USB passthru  not work with  Mac OS X  El Capitan

Status in QEMU:
  Invalid

Bug description:
  QEMU emulator version 2.4.50 with kernel kvm module from linux kernel
  3.16.0 or 4.2.3

  Since upgrading from Yosemite to El Capitan - USB passthru does not
  work. Note USB passthru worked perfectly with  Maverick and Yosemite.
  I attempt to use different USB hosts. I found a patch for widows xp
  that had similar problem the patch was applied in 2012. Note NO
  problems with USB passthru with windows or linux clients. If it
  matters the devices that I am trying to passthru USB are smartcard
  reader and webcam.  The devices are present in El Capitan but do not
  function.

  These are the massages from loading the VM (El Capitan). The first two
  lines are from the clover bootloader. The ehci warnings are generated
  when loading Mac Os X El Capitan.

  QEMU 2.4.50 monitor - type 'help' for more information
  ### These messages below started when  using the clover bootloader and occur 
when loading El Capitan, Maverick or Yosemite. 
  ### The bootloader is Clover  version 3292
  (qemu) ehci: PERIODIC list base register set while periodic schedule
        is enabled and HC is enabled
  ehci: ASYNC list address register set while async schedule
        is enabled and HC is enabled

  #### Below are errors when the guest host (El Capitan) is loading from qemu 
monitor.  The messages below only occur when loading El Capitan. 
  ehci warning: guest requested more bytes than allowed
  processing error - resetting ehci HC
  ehci warning: guest requested more bytes than allowed
  processing error - resetting ehci HC
  ehci warning: guest requested more bytes than allowed
  processing error - resetting ehci HC

  This is the errors from the guest os - Mac Os X - El Capitan
  000000.580358 AppleUSBLegacyRoot@: AppleUSBLegacyRoot::init: enabling legacy 
matching
  000001.803455 address@hidden: AppleUSBEHCI::WaitForAsyncSchedule: USBC
  MD (0x00080020) and USBSTS (0x00001000) did not synchronize

  the following qemu command has worked flawlessly with Yosemite and Maverick. 
  qemu-system-x86_64 -enable-kvm -m 4096 -cpu core2duo -machine q35 \
  -bios /usr/local/share/qemu/bios.bin \
  -name "El Capitan" \
  -mem-path /hugetlbfs \
  -rtc base=utc,clock=vm,driftfix=slew \
  -balloon none \
  -parallel none \
  -smp 4,sockets=1,cores=2,threads=2 \
  -boot menu=on \
  -usb -device usb-kbd -device usb-mouse \
  -device usb-host,vendorid=0x0455,productid=0x0777 \
  -vga std \
  -monitor stdio \
  -device isa-applesmc,osk="youknowwhatitis" \
  -smbios type=2 \
  -device ich9-intel-hda,bus=pcie.0,addr=1b.0,id=sound0 \
  -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 \
  -device e1000-82545em,netdev=hub0port0,id=mac_vnet0,mac=62:64:44:34:64:54 \
  -netdev 
bridge,id=hub0port0,br=br0,helper=/usr/local/libexec/qemu-bridge-helper \
  -device ide-drive,bus=ide.0,drive=elcapitan \
  -drive id=elcapitan,format=qcow2,if=none,file=./iElCapitan.qcow2 

  If anything else I can do to debug the problem please let me know.

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