Date: Tue, 2 Sep 2008 21:25:02 -0400 From: "Don Bowman" <don@sandvine.com> To: <freebsd-hardware@freebsd.org> Cc: michael@fuckner.net Subject: FreeBSD-AMD64 on Xeon MP Message-ID: <EB618291F3454E4DA10D152B9045C017016B91EA@exchange-2.sandvine.com>
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On Mon Aug 11 21:23:58 UTC 2008 John Baldwin wrote: >On Monday 11 August 2008 11:25:01 am Michael Fuckner wrote: > > Hi all, > >=20 > > I try to run FreeBSD-7-AMD64 on a Quad Xeon (Xeon MP 7320) and 32GB RAM.=20 > > The Board is a X7QC3 by supermicro and the installation is done on=20 > > another system, updated and plugged to this system. So I have a drive=20 > > with 7-STABLE compiled today. > > > > The last line I see from dmesg is vga0- then the system freezes. > > > > Anyone using a similar configuration or knows what could be wrong? I > > still have some days left to play with it, before this box gets shipped=20 > > to the customer. > > It is probably waiting for a config intr hook to complete. rwatson@ recently=20 > added some code to HEAD to help with debugging hangs there. That patch=20 > probably applies directly to 7.x and would be helpful in determining what is=20 > hanging. So I have debugged this down (same board), using 32-bit kernel. I have found it is hanging reading from the UHCI controller (register 0x10). I am using HEAD. In uhci_root_ctrl_start(), in case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):, it does: x =3D UREAD2(sc, port); now, this translates into a read from 0x3090 [UHCI base address is 0x3080, offset is 0x10 for the PORTSC0 register. I debugged this down by putting printf() in. I can't really fathom why that read would hang, does anyone have a suggestion on where to go next debugging? The chipset on this board is 631xESB/632xESB ICH. I tried putting a call to uhci_dumpregs() there, it hangs as well. So my assumption Is that a read to 0x3080 is hanging. Anyone have any suggestions? System has 4 XEON MP processors, Intel 7300 chipset, 1GB of RAM, motherboard is described http://www.supermicro.com/products/motherboard/Xeon7000/7300/X7QC3.cfm The IPMI is not installed.
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