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Date: Sun, 24 Sep 2000 00:04:38 +0200
From: German Tischler <tanis@gaspode.franken.de>
To: freebsd-current@FreeBSD.org
Subject: ahc and SMP
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Hi.

On my machine the ahc (aic) driver times out while probing for devices
on SMP, while it is working on UP.

dmesg says

ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> port 0xd000-0xd0ff mem 0xe1000000
-0xe1000fff irq 15 at device 6.0 on pci0
aic7890/91: Wide Channel A, SCSI Id=7, 32/255 SCBs

while booting the SMP kernel it says

(probe0:ahc0:0:0:0) Timedout SCB 9 handled by another timeout
(probe1:ahc0:0:1:0) SCB 0x8 - timed out while idle, SEQADDR == 0x167
sg[0] - Addr 0x7f2f684 : Length -2147483612
(probe1:ahc0:0:1:0) Queuing a BDR SCB
(probe1:ahc0:0:1:0) no longer in timeout, status = 34a

and after some more time will print more timeout messages and will not (at
least not for a few minutes) finish probing or announce any SCSI devices.

devices connected are

da0 at ahc0 bus 0 target 2 lun 0
da0: <IBM DORS-32160 S82C> Fixed Direct Access SCSI-2 device
da0: 10.000MB/s transfers (10.000MHz, offset 15)
da0: 2063MB (4226725 512 byte sectors: 255H 63S/T 263C)
da1 at ahc0 bus 0 target 3 lun 0
da1: <IBM DCAS-34330 S65A> Fixed Direct Access SCSI-2 device
da1: 20.000MB/s transfers (20.000MHz, offset 15)
da1: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C)
da2 at ahc0 bus 0 target 8 lun 0
da2: <IBM DDYS-T18350N S80D> Fixed Direct Access SCSI-3 device
da2: 40.000MB/s transfers (20.000MHz, offset 63, 16bit)
da2: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C)

Is anyone else seeing this ?

Another strange thing is that cdrecord -scanbus tells me

scsibus0:
        0,0,0     0) *
        0,1,0     1) *
        0,2,0     2) 'IBM     ' 'DORS-32160      ' 'S82C' Disk
        0,3,0     3) 'IBM     ' 'DCAS-34330      ' 'S65A' Disk
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
        0,8,0     8) 'IBM     ' 'DDYS-T18350N    ' 'S80D' Disk
scsibus1:
        1,0,0   100) 'YAMAHA  ' 'CRW4260         ' '1.0h' Removable CD-ROM
        1,1,0   101) *
        1,2,0   102) *
        1,3,0   103) *
        1,4,0   104) *
        1,5,0   105) *
        1,6,0   106) *
        1,7,0   107) *

While camcontrol devlist says

<IBM DORS-32160 S82C>              at scbus0 target 2 lun 0 (pass0,da0)
<IBM DCAS-34330 S65A>              at scbus0 target 3 lun 0 (pass1,da1)
<IBM DDYS-T18350N S80D>            at scbus0 target 8 lun 0 (pass2,da2)
<YAMAHA CRW4260 1.0h>              at scbus1 target 0 lun 0 (pass3,cd0)
<NEC CD-ROM DRIVE:465 1.03>        at scbus1 target 1 lun 0 (pass4,cd1)

Maybe just a bug in cdrecord.

--gt



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