Date: Tue, 25 Jul 2000 11:07:06 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: wilko@FreeBSD.ORG Cc: FreeBSD-alpha mailing list <freebsd-alpha@FreeBSD.ORG> Subject: Re: presence of DEFPA (fddi) panics 4.1RC Message-ID: <14717.44106.43720.739368@grasshopper.cs.duke.edu> In-Reply-To: <20000725164548.A7231@freebie.demon.nl> References: <20000725164548.A7231@freebie.demon.nl>
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Wilko Bulte writes:
> I finally got around to hooking up a serial console to my Miata
> (never throw your terminal servers away ;)
>
> Anyway:
>
> isp0: interrupting at CIA irq 3
> fpa0: <Digital DEFPA PCI FDDI Controller> port 0x8100-0x817f mem
> 0x80800000-0x8080ffff,0x80821000-0x8082107f irq 16 at device 9.0 on pci1
>
> fatal kernel trap:
>
> trap entry = 0x2 (memory management fault)
> a0 = 0x80821014
This is typically happens because bus_alloc_resource(cfg->dev, SYS_RES_MEMORY,...)
gives you an unusable address unless you specify if you want BWX or
DENSE space.
See if the following hack helps:
Index: pci/pci_compat.c
===================================================================
RCS file: /home/ncvs/src/sys/pci/pci_compat.c,v
retrieving revision 1.35
diff -u -r1.35 pci_compat.c
--- pci/pci_compat.c 2000/02/28 08:12:24 1.35
+++ pci/pci_compat.c 2000/07/25 15:03:00
@@ -96,7 +96,7 @@
rid = reg;
res = bus_alloc_resource(cfg->dev, SYS_RES_MEMORY, &rid,
- 0, ~0, 1, RF_ACTIVE);
+ 0, ~0, 1, RF_ACTIVE|PCI_RF_DENSE);
if (res) {
*pa = rman_get_start(res);
*va = (vm_offset_t) rman_get_virtual(res);
I'm not sure if this is really correct. But it will certainly rub off
the sharp corners of some devices using the pci compat shims..
Drew
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