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Date:      Sat, 27 Feb 1999 22:42:59 -0600 (CST)
From:      Zdenko Tomasic <zdenko@CS.UH.EDU>
To:        freebsd-questions@freebsd.org
Subject:   several scsi controllers --> one bus?
Message-ID:  <9902280442.AA07863@CS.UH.EDU>

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Hi,

I have all scsi system running 3.1S. There are 3 scsi controllers in 2
pci cards: Adaptec 2940UW in the first card and Diamond Fireport40 Dual
(ncr controllers) in the second card. It appears that FBSD thinks that
there is only 1 scsi bus on all 3 controllers which I find very
confusing and odd given that there are separate scsi cables on each
card. In practice it means that I cannot have a disk on aha with ID 0
and another one on ncr with ID 0, as that counts as conflict and at
least one of these two won't be visible. SCAM if enabled, will keep ID
all different regardless of a particular controller. I don't know if I
really managed to misconfigure my disk but my kernel config file has
only lines there are straightforward copies of LINT file and I do use
separate scbus? identifiers, but they obvuisly means something else
than what kernel prints in the dmesg file. (I don't have a copy of my
kernel config file handy, but will get it). 

My dmesg output follows, does anybody have any idea what's
happenening?

Feb 27 16:00:38 faca /kernel: Copyright (c) 1992-1999 FreeBSD Inc.
Feb 27 16:00:38 faca /kernel: Copyright (c) 1982, 1986, 1989, 1991, 1993
Feb 27 16:00:38 faca /kernel: The Regents of the University of California. All rights reserved.
Feb 27 16:00:39 faca /kernel: FreeBSD 3.1-STABLE #0: Sat Feb 27 15:37:19 CST 1999
Feb 27 16:00:39 faca /kernel: root@faca.zdenko.org:/usr/src/sys/compile/zdenko
Feb 27 16:00:39 faca /kernel: Timecounter "i8254"  frequency 1193182 Hz
Feb 27 16:00:39 faca /kernel: Timecounter "TSC"  frequency 400910238 Hz
Feb 27 16:00:39 faca /kernel: CPU: Pentium II/Xeon/Celeron (400.91-MHz 686-class CPU)
Feb 27 16:00:39 faca /kernel: Origin = "GenuineIntel"  Id = 0x651  Stepping=1
Feb 27 16:00:39 faca /kernel: Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,<b24>>
Feb 27 16:00:39 faca /kernel: real memory  = 134217728 (131072K bytes)
Feb 27 16:00:39 faca /kernel: avail memory = 127488000 (124500K bytes)
Feb 27 16:00:39 faca /kernel: Probing for devices on PCI bus 0:
Feb 27 16:00:39 faca /kernel: chip0: <Intel 82443BX host to PCI bridge> rev 0x02 on pci0.0.0
Feb 27 16:00:39 faca /kernel: chip1: <Intel 82443BX host to AGP bridge> rev 0x02 on pci0.1.0
Feb 27 16:00:39 faca /kernel: chip2: <Intel 82371AB PCI to ISA bridge> rev 0x02 on pci0.4.0
Feb 27 16:00:39 faca /kernel: chip3: <Intel 82371AB Power management controller> rev 0x02 on pci0.4.3
Feb 27 16:00:39 faca /kernel: ncr0: <ncr 53c875 fast20 wide scsi> rev 0x14 int a irq 12 on pci0.10.0
Feb 27 16:00:39 faca /kernel: ncr1: <ncr 53c875 fast20 wide scsi>
Feb 27 16:00:39 faca /kernel: rev 0x14 int a irq 12 on pci0.10.1
Feb 27 16:00:39 faca /kernel: de0: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 10 on pci0.11.0
Feb 27 16:00:39 faca /kernel: de0: 21140A [10-100Mb/s] pass 2.2
Feb 27 16:00:39 faca /kernel: de0: address 00:c0:f0:30:f4:aa
Feb 27 16:00:39 faca /kernel: ahc0: <Adaptec 2940 Ultra SCSI adapter> rev 0x01 int a irq 11 on pci0.12.0
Feb 27 16:00:39 faca /kernel: ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
Feb 27 16:00:39 faca /kernel: Probing for devices on PCI bus 1:
Feb 27 16:00:39 faca /kernel: vga0: <Matrox model 051f graphics accelerator> rev 0x00 int a irq 11 on pci1.0.0
Feb 27 16:00:39 faca /kernel: Probing for PnP devices:
Feb 27 16:00:39 faca /kernel: CSN 1 Vendor ID: CSCd925 [0x25d9630e] Serial 0xffffffff Comp ID: @@@0000 [0x00000000]
Feb 27 16:00:39 faca /kernel: This is a CS4235, but LDN 0 is disabled
Feb 27 16:00:39 faca /kernel: Probing for devices on the ISA bus:
Feb 27 16:00:39 faca /kernel: sc0 on isa
Feb 27 16:00:39 faca /kernel: sc0: VGA color <16 virtual consoles, flags=0x0>
Feb 27 16:00:39 faca /kernel: sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
Feb 27 16:00:39 faca /kernel: sio0: type 16550A
Feb 27 16:00:39 faca /kernel: sio1 at 0x2f8-0x2ff irq 3 on isa
Feb 27 16:00:39 faca /kernel: sio1: type 16550A
Feb 27 16:00:39 faca /kernel: lpt0 at 0x378-0x37f irq 7 on isa
Feb 27 16:00:39 faca /kernel: lpt0: Interrupt-driven port
Feb 27 16:00:39 faca /kernel: lp0: TCP/IP capable interface
Feb 27 16:00:39 faca /kernel: lpt-265945040: this driver is deprecated; use ppbus instead.
Feb 27 16:00:39 faca /kernel: atkbdc0 at 0x60-0x6f on motherboard
Feb 27 16:00:39 faca /kernel: atkbd0 irq 1 on isa
Feb 27 16:00:39 faca /kernel: pcm0 not found
Feb 27 16:00:39 faca /kernel: fdc0 at 0x3f0-0x3f7 irq 6 
Feb 27 16:00:39 faca /kernel: drq 2 on isa
Feb 27 16:00:39 faca /kernel: fdc0: FIFO enabled, 8 bytes threshold
Feb 27 16:00:39 faca /kernel: fd0: 1.44MB 3.5in
Feb 27 16:00:39 faca /kernel: npx0 on motherboard
Feb 27 16:00:39 faca /kernel: npx0: INT 16 interface
Feb 27 16:00:39 faca /kernel: vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
Feb 27 16:00:39 faca /kernel: IP packet filtering initialized, divert disabled, rule-based forwarding disabled, logging disabled
Feb 27 16:00:39 faca /kernel: Waiting 15 seconds for SCSI devices to settle
Feb 27 16:00:39 faca /kernel: de0: autosense failed: cable problem?
Feb 27 16:00:39 faca /kernel: sa0 at ncr0 bus 0 target 6 lun 0
Feb 27 16:00:39 faca /kernel: sa0: <ARCHIVE VIPER 150  21247 -005> Removable Sequential Access SCSI-CCS device 
Feb 27 16:00:39 faca /kernel: sa0: 3.300MB/s transfers
Feb 27 16:00:39 faca /kernel: da2 at ncr0 bus 0 target 2 lun 0
Feb 27 16:00:39 faca /kernel: da2: <R.A.R.E. RS3105 T368> Fixed Direct Access SCSI-2 device 
Feb 27 16:00:39 faca /kernel: da2: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
Feb 27 16:00:39 faca /kernel: da2: 1001MB (2050860 512 byte sectors: 64H 32S/T 1001C)
Feb 27 16:00:39 faca /kernel: da4 at ncr0 bus 0 target 4 lun 0
Feb 27 16:00:40 faca /kernel: da4: <IMPRIMIS 94601-15 0477> Fixed Direct Access SCSI-CCS device 
Feb 27 16:00:40 faca /kernel: da4: 3.300MB/s transfers
Feb 27 16:00:40 faca /kernel: da4: 989MB (2026965 512 byte sectors: 64H 32S/T 989C)
Feb 27 16:00:40 faca /kernel: cd0 at ncr0 bus 0 target 1 lun 0
Feb 27 16:00:40 faca /kernel: cd0: <PLEXTOR CD-ROM PX-32CS 1.00> Removable CD-ROM SCSI-2 device 
Feb 27 16:00:40 faca /kernel: cd0: 20.000MB/s transfers (20
Feb 27 16:00:40 faca /kernel: .000MHz, offset 15)
Feb 27 16:00:40 faca /kernel: cd0: cd present [1209176 x 512 byte records]
Feb 27 16:00:40 faca /kernel: da1 at ncr0 bus 0 target 3 lun 0
Feb 27 16:00:40 faca /kernel: da1: <IBMRISC 0664M1H 5 51> Fixed Direct Access SCSI-2 device 
Feb 27 16:00:40 faca /kernel: da1: 10.000MB/s transfers (10.000MHz, offset 16), Tagged Queueing Enabled
Feb 27 16:00:40 faca /kernel: da1: 1920MB (3933040 512 byte sectors: 255H 63S/T 244C)
Feb 27 16:00:40 faca /kernel: changing root device to da0s1a
Feb 27 16:00:40 faca /kernel: da0 at ahc0 bus 0 target 0 lun 0
Feb 27 16:00:40 faca /kernel: da0: <IBM OEM DCHS09W 2222> Fixed Direct Access SCSI-2 device 
Feb 27 16:00:40 faca /kernel: da0: 20.000MB/s transfers (10.000MHz, offset 8, 16bit), Tagged Queueing Enabled
Feb 27 16:00:40 faca /kernel: da0: 8689MB (17796077 512 byte sectors: 255H 63S/T 1107C)
Feb 27 16:01:08 faca login: ROOT LOGIN (root) ON ttyv0

(ncr1 has no devices attached yet).

tnx.

ZT


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