Date: Thu, 7 Jun 2001 08:50:03 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: freebsd-alpha@freebsd.org Subject: Re: alpha/27930: NE2000 not supported on FreeBSD Alpha 4.x; fix included Message-ID: <200106071550.f57Fo3f76988@freefall.freebsd.org>
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The following reply was made to PR alpha/27930; it has been noted by GNATS.
From: Matthew Jacob <mjacob@feral.com>
To: thomas.pornin@ens.fr
Cc: FreeBSD-gnats-submit@FreeBSD.ORG, alpha@FreeBSD.ORG
Subject: Re: alpha/27930: NE2000 not supported on FreeBSD Alpha 4.x; fix
included
Date: Thu, 7 Jun 2001 08:49:04 -0700 (PDT)
No- I'm afraid this won't be the right answer. kvtop will go away- what has
to happen is that ed needs to be dmabus-ified.
On Thu, 7 Jun 2001 thomas.pornin@ens.fr wrote:
>
> >Number: 27930
> >Category: alpha
> >Synopsis: NE2000 not supported on FreeBSD Alpha 4.x; fix included
> >Confidential: no
> >Severity: non-critical
> >Priority: medium
> >Responsible: freebsd-alpha
> >State: open
> >Quarter:
> >Keywords:
> >Date-Required:
> >Class: change-request
> >Submitter-Id: current-users
> >Arrival-Date: Thu Jun 07 04:40:01 PDT 2001
> >Closed-Date:
> >Last-Modified:
> >Originator: Thomas Pornin
> >Release: FreeBSD 4.3-RELEASE alpha
> >Organization:
> Ecole Normale Superieure
> >Environment:
>
> The machine is an AXPpci (NoName) Alpha board, with a 166 MHz 21066 cpu,
> 32 MBytes ram, 256 Kbytes cache. I added an add-on Realtek 8029 PCI
> ethernet card, which is supposed to emulate a NE2000 10Mbits card.
>
>
> >Description:
>
> The NE2000 support is i386-only, although one of the kernel source
> files (/dev/ed/if_ed_pci.c) is in sys/conf/files, not in sys/conf/files.i386.
>
>
> >How-To-Repeat:
>
> Try compiling a 4.3-RELEASE (or 4.2-RELEASE) kernel with the line:
>
> device ed0
>
> in the config file. It won't link, complaining about not found symbols
> (such as ed_probe_Novell_generic, which is in sys/dev/ed/if_ed.c).
>
>
> >Fix:
>
> I stole a patch from FreeBSD-5.0; the fix is the following:
>
> ** add the following function at the end of src/sys/alpha/alpha/vm_machdep.c:
>
> u_long kvtop(void *addr)
> {
> vm_offset_t va;
>
> if (va == 0) panic("kvtop: zero page frame");
> return (int)va;
> }
>
> ** add the following prototype in sys/dev/ed/if_ed.c:
>
> u_long kvtop(void *);
>
> ** move the following three lines from sys/conf/files.i386 to sys/conf/files:
>
> dev/ed/if_ed.c optional ed
> dev/ed/if_ed_isa.c optional ed isa
> dev/ed/if_ed_pccard.c optional ed card
>
>
> Then compile the kernel with the line 'device ed0' in the config file.
> It will link, boot up, recognize the card and use it. At least it works
> for me (this message is sent from that machine, through that network
> adapter).
>
>
> I do not provide a unified diff because I think the patch will have to
> be a bit sorted out:
> -- the cast to int in kvtop() looks suspicious to me
> -- cc complains a bit about kvtop() defined without a prior prototype
> -- adding a prototype to if_ed.c does not look "clean" and I am not
> sure it won't break things on i386
> -- credits should be given: I am not the original author of that fix,
> I stole it from some message in some mailing-list which would cite
> it as coming from the FreeBSD-5.0-current cvs source repository
>
>
> Yet I believe that it should be fairly easy to add the NE2000 Alpha
> support in FreeBDS 4.4 without breaking anything else.
>
> (I do know that NE2000 clones are lousy cards, but they are really cheap)
> >Release-Note:
> >Audit-Trail:
> >Unformatted:
>
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