Date: Fri, 10 Sep 1999 13:42:59 -0600 From: "Justin T. Gibbs" <gibbs@caspian.plutotech.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: scsi@freebsd.org, gibbs@freebsd.org, anderson@cs.duke.edu Subject: Re: data corruption when using aic7890 Message-ID: <199909101942.NAA02899@caspian.plutotech.com> In-Reply-To: Your message of "Tue, 07 Sep 1999 16:00:38 EDT." <14293.26481.521753.519004@grasshopper.cs.duke.edu>
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>
>Hi,
>
>I have a bunch of ASUS P2B-LS motherboards with on-board AIC7890 U2
>controllers. I'm running a kernel with rev 1.20 of
>src/sys/pci/ahc_pci.c (eg, after the CACHETHEN fix).
Can you see if this has any effect on your problem? This is the setting
left over from the BIOS on my systems here. I would expect the best
performance to be a setting of RD_DFTHRSH_MIN|WR_DFTHRSH_100 but lets
try this first.
--
Justin
==== //depot/FreeBSD-current/src/sys/pci/ahc_pci.c#22 - /usr/src/sys/pci/ahc_pci.c ====
*** /tmp/tmp.2882.0 Fri Sep 10 13:36:27 1999
--- /usr/src/sys/pci/ahc_pci.c Fri Sep 10 13:35:34 1999
***************
*** 826,832 ****
* and 75% on ULTRA2 controllers.
*/
if ((ahc->features & AHC_ULTRA2) != 0) {
! ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75);
} else {
ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
}
--- 826,832 ----
* and 75% on ULTRA2 controllers.
*/
if ((ahc->features & AHC_ULTRA2) != 0) {
! ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MIN|WR_DFTHRSH_MIN);
} else {
ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
}
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