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: [email protected]
Reporter: [email protected]
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.
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