CVS commit: src/sys/dev/pci

["Izumi Tsutsui" <tsutsui%netbsd.org@localhost>]

Module Name:    src
Committed By:   tsutsui
Date:           Tue Jan  6 15:21:38 UTC 2026

Modified Files:
        src/sys/dev/pci: ehci_pci.c

Log Message:
ehci_pci: Apply AMD SB600/SB700 quirk after enabling the device

With src/sys/dev/pci/pci_map.c rev. 1.40 we now disable I/O or memory
decoding before probing BARs and restore the command register afterward.

However, after that change, on some SB600-based systems (at least
my ASRock M3A-UCC) applying the quirk before enabling the device
made the first EHCI MMIO accesses unreliable, as mentioned in
PR kern/57359.

Moving the quirk handling (writing the vendor specific SBx00
workaround register) to after the device is enabled resolves
issue even with pci_map.c rev. 1.40, and this should not affect
systems other than SB600 and certain early SB700 revisions.

Should be pullup to netbsd-10 and netbsd-11.


To generate a diff of this commit:
cvs rdiff -u -r1.78 -r1.79 src/sys/dev/pci/ehci_pci.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.