[Bug 212021] xhci(4) broken on big-endian systems

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212021

            Bug ID: 212021
           Summary: xhci(4) broken on big-endian systems
           Product: Base System
           Version: CURRENT
          Hardware: ppc
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: usb
          Assignee: freebsd-usb at FreeBSD.org
          Reporter: nwhitehorn at FreeBSD.org

Created attachment 173901
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=173901&action=edit
Log from ppc64 QEMU with an xhci controller. usb_debug and xhcidebug have been
set to 10 and QEMU's usb tracing has also been enabled.

xhci(4) times out after interrupts turn on while probing the USB bus on
big-endian hardware, notably newer POWER8 servers that come with USB3.

The problem is reproducible on qemu-system-ppc64 with an emulated xhci device
for debugging without access to the hardware. I've attached a boot log with all
the USB debugging in FreeBSD and QEMU turned on. Nothing was immediately
obvious as the source of the problem but I'm not that familiar with USB.

-- 
You are receiving this mail because:
You are the assignee for the bug.