Re: port-alpha/40077: pmf_system_shutdown(9) breaks reboot(8) on PWS500au

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

The following reply was made to PR port-alpha/40077; it has been noted by GNATS.

From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
To: mhitch%lightning.msu.montana.edu@localhost
Cc: gnats-bugs%NetBSD.org@localhost, port-alpha-maintainer%NetBSD.org@localhost,
        gnats-admin%NetBSD.org@localhost, netbsd-bugs%NetBSD.org@localhost,
        tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: port-alpha/40077: pmf_system_shutdown(9) breaks reboot(8) on 
PWS500au
Date: Mon, 7 Sep 2009 23:19:04 +0900

 > > No sure about the real fix, but at least removing the pmf_system_shutdown()
 > > call from sys/arch/alpha/alpha/machdep.c:cpu_reboot() make reboot/halt
 > > commands work as expected.
 > 
 >    I ran into a similar type of problem on an old Compaq DL360.  It hung
 > on any attempt to halt, and required a power cycle to clear.  I did track
 > it down to the 1.113 revision of sys/dev/pci/pci.c, which disables bus 
 > master accesses.  You might try to comment out the code in 
 > pci_child_shutdown() and see if that also makes it work.
 
 alpha/pci/sio_pic.c:sio_intr_shutdown() which is established
 by shutdownhook_establish(9) is called before shutdown hooks
 registered by pmf(9) during shutdown, per alpha/machdep.c:cpu_reboot().
 
 Is it make sense to register sio_intr_shutdown() in sioattach()?
 (though it might require some ugly tricks)
 ---
 Izumi Tsutsui