Date: Tue, 25 Jul 2000 20:33:14 +0200 From: Wilko Bulte <wkb@freebie.demon.nl> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: wilko@freebsd.org, FreeBSD-alpha mailing list <freebsd-alpha@freebsd.org> Subject: Re: presence of DEFPA (fddi) panics 4.1RC Message-ID: <20000725203314.B8155@freebie.demon.nl> In-Reply-To: <14717.44106.43720.739368@grasshopper.cs.duke.edu>; from gallatin@cs.duke.edu on Tue, Jul 25, 2000 at 11:07:06AM -0400 References: <20000725164548.A7231@freebie.demon.nl> <14717.44106.43720.739368@grasshopper.cs.duke.edu>
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On Tue, Jul 25, 2000 at 11:07:06AM -0400, Andrew Gallatin wrote:
>
> Wilko Bulte writes:
> > 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..
It does indeed polish the sharp edges. No panic anymore. I get a good probe
etc. But no link it seems. I'll doublecheck with T64 to see if the
link/cable etc is OK.
--
Wilko Bulte http://www.freebsd.org
wilko@freebsd.org http://www.nlfug.nl
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