Subject: port-i386/5706: Broken aic driver (data overrums)
To: None <,, mjacob@NetBSD.ORG>
From: None <>
List: netbsd-bugs
Date: 07/04/1998 22:08:10
>Number:         5706
>Category:       port-i386
>Synopsis:       Broken aic driver (data overrums)
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul  4 13:20:01 1998
>Originator:     Bernd Ernesti
>Release:        NetBSD-current source Jul 4 21:54:07 MEST 1998
System: NetBSD 1.3F NetBSD 1.3F (PARRESUM) #270: Sat Jul 4 21:36:12 MEST 1998 root@:/home/source/obj_i386/src/sys/arch/i386/compile/PARRESUM i386

	I get many data overrums from the aic driver after I updated
	today my kernel.

	sd1(ahc0:1:0): data overrun of 500 bytes detected.  Forcing a retry.

ahc0 at pci0 dev 11 function 0
ahc0: interrupting at irq 11
ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
scsibus0 at ahc0 channel 0: 16 targets
ahc0: target 0 synchronous at 20.0MHz, offset = 0xf
sd0 at scsibus0 targ 0 lun 0: <IBM, DORS-32160, WA6A> SCSI2 0/direct fixed
sd0: 2063MB, 6703 cyl, 5 head, 126 sec, 512 bytes/sect x 4226725 sectors
ahc0: target 1 using 16Bit transfers
ahc0: target 1 synchronous at 20.0MHz, offset = 0x8
sd1 at scsibus0 targ 1 lun 0: <IBM, DCAS-34330W, S65A> SCSI2 0/direct fixed
sd1: 4134MB, 8205 cyl, 6 head, 171 sec, 512 bytes/sect x 8467200 sectors
ahc0: target 2 synchronous at 10.0MHz, offset = 0xf
cd0 at scsibus0 targ 2 lun 0: <NEC, CD-ROM DRIVE:462, 1.13> SCSI2 5/cdrom removable

	I got the first one during a make in src/gnu/lib/bfd which was the cause
	this error:

building standard bfd library
/usr/bin/nm: /src/gnu/lib/bfd/../../dist/bfd/libbfd.c: File format not recognized
ranlib libbfd.a
ranlib: libbfd.a: Malformed archive
*** Error code 1

The next overruns accured during a linking of a new kernel to try an older
version of the aic driver. I had to boot an older kernel and build the new
kernel under the old one.
This was repeatable.

	Backout the recent changes to the aic driver.
	This are the source which don't have this problem.

/*      $NetBSD: aic7xxxreg.h,v 1.5 1997/03/09 06:10:35 mikel Exp $     */
/*      $NetBSD: aic7xxx.seq,v 1.8 1998/04/16 07:07:37 leo Exp $        */
#define AIC7XXX_SEQ_VER "$NetBSD: aic7xxx_seq.h,v 1.2 1996/10/08 03:04:07 gibbs Exp $"

This is the commit which broke it for me:

Fri Jul  3 16:45:11 PDT 1998
Update of /cvsroot/src/sys/dev/microcode/aic7xxx
In directory nb00:/tmp/cvs-serv4163

Modified Files:
        aic7xxx.seq aic7xxx_seq.h 
Log Message:
Patches from Justin that handle some REV B AIC7880 problems

Fri Jul  3 16:45:33 PDT 1998
Update of /cvsroot/src/sys/dev/ic
In directory nb00:/tmp/cvs-serv4193

Modified Files:
Log Message:
Patches from Justin that handle some REV B AIC7880 problems