Re: Broadcom Wireless card

On 2/9/07, Kip Macy <kmacy_at_fsmware.com> wrote:
> On Thu, 8 Feb 2007, Scot Hetzel wrote:
> > On 2/7/07, Kip Macy <kmacy_at_fsmware.com> wrote:
> >>
> >> I can't comment on the mini-pci version, but NDIS works just fine with
> >> the cardbus version. It would be interesting to figure out where ndis is
> >> falling short.
> >>
> >>                                         -Kip
> >
> > I'm also seeing a kernel panic when trying to load a newer version of
> > the Broadcom driver on my HP dv8135nr system.
> >
> > This driver (for the HP dv8135nr) works:
> >
> > Broadcom BCM43xx 802.11 Network Adapter Driver (4.40.19.0)
> > ftp://ftp.hp.com/pub/softpaq/sp33001-33500/sp33008.exe
> >
> > This driver (for the HP dv6110us) causes a kernel page fault with
> > non-sleepable locks held:
> >
> > Broadcom BCM43xx 802.11 Network Adapter Driver (4.100.15.5)
> > ftp://ftp.hp.com/pub/softpaq/sp34001-34500/sp34152.exe
>
> Thanks for the pointer, the "fpudna in kernel mode" may be the real
> issue - it means that floating point is being used which is very
> strange. If I can't reproduce, it would be helpful if you would apply
> the kgdb patch I'm about to send along and give me an updated
> backtrace.
>
I get this "fpudna in kernel mode" with the older driver, and it never
caused the kernel to crash.

The patch doesn't apply for my system since I'm using FreeBSD/amd64.
But I did use the patch as a guide to modify trgt_amd64.c.  I just had
to do the following:

- add intrframe to the kgdb_frame_cache structure
- copy code which sets intrframe in kgdb_trgt_frame_cache() from
trgt_i386.c to trgt_amd64.c
- change "*addrp = cache->sp + ofs;" to "*addrp = cache->sp + ofs +
(cache->intrframe ? 8 : 4);" in kgdb_trgt_trapframe_prev_register

The only thing this change did on my system was for it to print frames
1 -10 (frames 11 - 22 were missing) as shown in the previous
backtrace.

It also displayed "Previous frame inner to this frame (corrupt
stack?)" as the last line before the "(kgdb)" prompt.

> >
> > Note:  This driver has my adapter listed in the bcmwl5.inf file.
> >
> > FreeBSD hp010 7.0-CURRENT FreeBSD 7.0-CURRENT #5: Thu Feb  8 17:14:40 CST
> > 2007
> > swhetzel_at_hp010:/usr/src/7x/sys-p4/amd64/compile/GENERIC.debug  amd64
> >

Scot
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