Description of Problem:

on roswell 2 (7.1.94), with the kernel 2.4.7-2, issuing the command
"modprobe agpgart" locks the machine solid; a reboot is necessary

Version-Release number of selected component (if applicable):

kernel 2.4.7-2

How Reproducible:

everytime; happens when I try the smp kernel, the non-smp kernel, the
noapic option, and after fiddling with almost every BIOS option

Steps to Reproduce:
1. modprobe agpgart

Actual Results:

machine locks solid; a hard reset is required

Expected Results:

the agpgart module should load, or give an error

Additional Information:

I didn't have this problem in 7.1. The problem is probably caused by the
new ServerWorks AGP support that has found itself in newer kernels (post
7.1)--I have a ServerWorks III HE-SL chipset in my SuperMicro 370DE6
motherboard. Before ServerWorks AGP support was available the kernel would
spit out an error message when I tried to load the agpgart module.

When the support was introduced in the generic kernel source I worked with
Jeff Hartmann, the agpgart author, to try to isolate the problem. At that
time when the module was loaded a series of error messages would scroll by
on the screen; the machine was still essentially hard-locked, however. He
ascertained after a while that he thought the problem had to do with
resources not being allocated correctly. The output of lspci -vvv shows
this:

00:00.0 Host bridge: ServerWorks CNB20HE Host Bridge (rev 23)
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort-
<MAbort- >SERR- <PERR-
        Region 0: Memory at <ignored> (32-bit, prefetchable) [disabled]
[size=128M]
        Region 1: Memory at f22ff000 (32-bit, non-prefetchable) [disabled]
[size=4K]

Here the Region 0 of 00:00.0 isn't allocated. dmesg also points this out:

PCI: Cannot allocate resource region 0 of device 00:00.0 

By playing around with various BIOS settings I can get it so that Region 0
is allocated, but Region 1 then goes unallocated. At Jeff's suggestion I
removed all PCI devices from the system--he thought maybe a soundcard or
other device was the problem--this still didn't fix it.

Booting with the uniproc kernel or with the noapic option doesn't fix the
problem either.

I think that if the resource allocation problem can be fixed this will fix
the agpgart lockup.

I will attach all relevant information that Jeff had asked for...