Date: Fri, 3 May 1996 03:23:15 -0500 (CDT) From: Bob Willcox <bob@luke.pmr.com> To: gibbs@freefall.freebsd.org (Justin T. Gibbs) Cc: freebsd-current@freefall.freebsd.org Subject: Re: ahc driver no longer sees one of my disks Message-ID: <199605030823.DAA14478@luke.pmr.com> In-Reply-To: <199605030439.VAA23683@freefall.freebsd.org> from "Justin T. Gibbs" at "May 2, 96 09:39:07 pm"
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Justin T. Gibbs wrote:
> >Since replacing my 100MHz Pentium CPU with a 166MHz CPU, the Adaptec
> >2940 device driver no longer sees one of my SCSI disks, my Toshiba
> >3701 CDROM, or my Wangtek 5525ES tape drive (the adapter's BIOS
> >does). What I use to get (before the CPU change) for boot output
> >was:
> >
>
> The driver uses DELAY() to perform the SCSI bus reset. Perhaps its not
> long enough in your new system. My other guess is that the bus settle
> delay isn't long enough. What's the value of SCSIDELAY in your kernel?
> Is DELAY() really so dependant on the CPU speed? Can we get a better
> DELAY() macro?
My SCSI_DELAY is set to 15 seconds and the system does appear to
wait for that length of time (as measured with a stop watch).
Some, possibly relavent, other boot messages I get are:
Calibrating clock(s) relative to mc146818A clock ... i586 clock: 166189614 Hz, i8254 clock: 1193157 Hz
CLK_USE_I8254_CALIBRATION not specified - using default frequency
CLK_USE_I586_CALIBRATION not specified - using old calibration method
i586 clock: 0 Hz
CPU: Pentium (166.18-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52c Stepping=12
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
Also, incase its any help, rebooting with the -v flag yields the
following ahc msgs:
ahc0 <Adaptec 2940 SCSI host adapter> rev 3 int a irq 12 on pci0:10
mapreg[10] type=1 addr=0000e000 size=0100.
mapreg[14] type=0 addr=fb3f6000 size=1000.
ahc0: BurstLen = 8DWDs, Latency Timer = 32PCLKS
ahc0: Reading SEEPROM...done.
ahc0: aic7870 Single Channel, SCSI Id=7, 16 SCBs
ahc0: Downloading Sequencer Program...Done
ahc0: Probing channel A
ahc0 waiting for scsi devices to settle
ahc0: target 0 synchronous at 10.0MHz, offset = 0xf
(ahc0:0:0): "QUANTUM PD700S 3110" type 0 fixed SCSI 2
sd0(ahc0:0:0): Direct-Access 668MB (1368432 512 byte sectors)
sd0(ahc0:0:0): with 2448 cyls, 8 heads, and an average 69 sectors/track
ahc0: target 1 synchronous at 10.0MHz, offset = 0xf
(ahc0:1:0): "DEC DSP3105S X385" type 0 fixed SCSI 2
sd1(ahc0:1:0): Direct-Access 1001MB (2050860 512 byte sectors)
sd1(ahc0:1:0): with 2570 cyls, 14 heads, and an average 57 sectors/track
--
Bob Willcox
bob@luke.pmr.com
Austin, TX
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