From ahmed_benani@urbanet.ch Sun Dec  5 10:05:30 1999
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Date: Sun, 05 Dec 1999 19:04:19 +0100
From: "Ahmed Benani" <ahmed_benani@urbanet.ch>
To: hnokubi@yyy.or.jp
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Tr : kern/15279: Please fix handling Ross(?) host to PCI bridge

>Number:         15281
>Category:       kern
>Synopsis:       Please fix handling Ross(?) host to PCI bridge
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Dec  5 10:10:00 PST 1999
>Closed-Date:    Sun Jul 28 09:36:18 PDT 2002
>Last-Modified:  Sun Jul 28 09:36:18 PDT 2002
>Originator:     NOKUBI Hirotaka
>Release:        FreeBSD 4.0-CURRENT i386
>Organization:
>Environment:

FreeBSD alphazeal.nokubi.or.jp 4.0-CURRENT FreeBSD 4.0-CURRENT #8: Sun Dec =
 
5 21:39:51 JST 1999     
h-nokubi@alphazeal.nokubi.or.jp:/usr/src/src/sys/compile/MP  i386

>Description:

I'm using NEC PC-9821RvII (It's not PC-AT compatible).
After I got bootstrap message `Ross(?)', I cannot use PCI bus.

>How-To-Repeat:


>Fix:

It seems that reading from 0x45 has no meaning on my machine.
Without following patch, my machine reports like this.

pcib255: <Ross (?) host to PCI bridge> on motherboard

And no other PCI devices are found, cannot mount root device, then panic.
It seems that pci_cfgread() returns 0xff.

PC9821RvII uses Champion as it's chip set. Champion is product of
Reliance Computer, I beleive. So, I feel strange about message `Ross(?)'.
`RCC' is more precise?

Index: i386/isa/pcibus.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
RCS file: /home/ncvs/src/sys/i386/isa/pcibus.c,v
retrieving revision 1.50
diff -u -u -r1.50 pcibus.c
--- pcibus.c 1999/11/18 08:58:37 1.50
+++ pcibus.c 1999/12/05 13:02:17
@@ -395,7 +395,9 @@
  case 0x00051166:
   s =3D "Ross (?) host to PCI bridge";
   /* just guessing the secondary bus register number ... */
+#if 0
   *busnum =3D pci_cfgread(cfg, 0x45, 1);
+#endif
   break;
 
   /* Integrated Micro Solutions -- vendor 0x10e0 */


>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: bmah 
State-Changed-When: Sat Jan 12 10:21:29 PST 2002 
State-Changed-Why:  
This patch was committed in rev. 1.52 of src/sys/i386/isa/pcibus.c. 
Quite a few other changes have been made to the file since then as well. 
I'm guessing this is no longer a problem...is it OK for me to close 
this PR? 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=15281 
State-Changed-From-To: feedback->closed 
State-Changed-By: mp 
State-Changed-When: Sun Jul 28 09:34:40 PDT 2002 
State-Changed-Why:  
Feedback timeout. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=15281 
>Unformatted:
 Please Unsubscribe
 ----------
 De=A0: hnokubi@yyy.or.jp
 =C0 : FreeBSD-gnats-submit@FreeBSD.ORG
 Objet=A0: kern/15279: Please fix handling Ross(?) host to PCI bridge
 Date=A0: Dim 5 d=E9c 1999 14:43
 
 
 


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