From owner-freebsd-bugs  Thu Sep  9 10:50: 9 1999
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Date: Thu, 9 Sep 1999 10:50:02 -0700 (PDT)
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To: freebsd-bugs@FreeBSD.org
Cc: 
From: Parag Patel <parag@cgt.com>
Subject: Re: kern/13546: Too-verbose output from PCI probe at bootup
Reply-To: Parag Patel <parag@cgt.com>
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The following reply was made to PR kern/13546; it has been noted by GNATS.

From: Parag Patel <parag@cgt.com>
To: freebsd-gnats-submit@freebsd.org
Cc:  
Subject: Re: kern/13546: Too-verbose output from PCI probe at bootup
Date: Thu, 09 Sep 1999 10:41:51 -0700

 Here's a better fix.  Turns out that this 4xPPro box has two "Orion"
 chips in it, and the code that picks off the number of subordinate buses
 returns 255 for whatever reason.  The fix is copied from the
 fixbushigh_450nx() routine into the fixbushigh_orion() routine, which
 appears to have the same problem.
 
 The fix could be made generic and moved out of both bushigh routines if
 there are no systems out there with 255 subordinate buses.  The magic
 number 255 may mean different things to different chipsets so I settled
 for this Orion-specific fix.
 
 
 	-- Parag Patel
 
 
 
 *** /sys/pci/pcisupport.c       Sat Sep  4 04:02:49 1999
 - --- pcisupport.c        Wed Sep  8 12:03:00 1999
 ***************
 *** 129,134 ****
 - --- 129,149 ----
   {
         tag->secondarybus = pci_cfgread(tag, 0x4a, 1);
         tag->subordinatebus = pci_cfgread(tag, 0x4b, 1);
 +
 +       if (tag->subordinatebus == 255) {
 +               printf("fixbushigh_orion: bogus highest PCI bus %d",
 +                      tag->subordinatebus);
 + #ifdef NBUS
 +               tag->subordinatebus = NBUS - 2;
 + #else
 +               tag->subordinatebus = 10;
 + #endif
 +               printf(", reduced to %d\n", tag->subordinatebus);
 +       }
 +
 +       if (bootverbose)
 +               printf("fixbushigh_orion: subordinatebus is %d\n",
 +                       tag->subordinatebus);
   }
 
   static void
 


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