kern/54984: USB broken on Dell PowerEdge R630

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         54984
>Category:       kern
>Synopsis:       USB broken on Dell PowerEdge R630
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 19 07:35:00 +0000 2020
>Originator:     Andreas Gustafsson
>Release:        NetBSD 9.0
>Organization:

>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

Booting the NetBSD/amd64 9.0 install image on a Dell PowerEdge R630
server from a USB flash drive, the bootloader and kernel load
successfully, but the kernel then fails to detect the flash drive or
any other USB devices.  The console output ends with:

  [   2.4139813] uhub0 at usb0: NetBSD (0000) xHCI root hub (0000), class 9/0, rev 3.00/1.00, addr 0
  [   2.5163526] uhub1 at usb1: NetBSD (0000) xHCI root hub (0000), class 9/0, rev 2.00/1.00, addr 0
  [   2.6256832] uhub2 at usb3: NetBSD (0000) EHCI root hub (0000), class 9/0, rev 2.00/1.00, addr 1
  [   2.7357183] uhub3 at usb2: NetBSD (0000) EHCI root hub (0000), class 9/0, rev 2.00/1.00, addr 1
  [   9.8680077] uhub1: device problem, disabling port 8
  [  15.8099151] uhub1: device problem, disabling port 12
  [  48.6004407] ipmi0: ID 32.1 IPMI 2.0 Available +SDRs
  [  68.6568787] uhub2: device problem, disabling port 1
  [  69.7072159] uhub3: device problem, disabling port 1
  [  69.7672353] WARNING: 27 errors while detecting hardware; check system log.
  [  69.8472608] boot device: <unknown>
  [  69.8872737] root device: 

The full console output is at:

  http://www.gson.org/netbsd/bugs/r630/dmesg-9.0-usb3.txt

This is with the flash drive and a USB keyboard plugged into the rear
USB ports and USB 3 enabled in the BIOS.  Disabling USB 3 does not help,
nor does disabling hyperthreading.

OpenBSD 6.6 and FreeBSD 12.1 install images also fail to boot with USB
related issues.  A Debian 10.3.0 install image boots successfully.

>How-To-Repeat:

>Fix: