Controlling PCI ordering

From: J.A. Magallon
Date: Tue Feb 10 2004 - 19:38:05 EST

Hi all...

I have a little problem with PIC card/function ordering.
Lets see if I can state it clearly...

I have an Adaptec 29320 card, that has two independent channels.
Channel B has the external connector and the internal LVD connector.
Channel A has one internal Ultra and one other 50-pin scsi-2 connector.
I have a ZIP and a CDROM connected to the 50pin plug,

Channel A is limited to 40 Mb/s (do not know if its the card or the fact that
I have the 50pin bus used...).
So my U320 boot disk has to go to channel B.

Problem is that BIOS detects the drive in channel B as the first SCSI disk,
but the kernel (aic79xx driver) detects first the A channel, so my boot
disk goes to sdb instead of sda (sda is the zip for the kernel, the CD goes
to scd).

In short, I have to install lilo/set root to sdb1. What happens if I remove
the zip drive ? Non-booting box :(.

Can I make the kernel to reverse the ordering of the two functions in that
PCI slot ? IE, move the U320 channel B to scsi0.

03:02.0 SCSI storage controller: Adaptec ASC-29320 U320 (rev 03)
03:02.1 SCSI storage controller: Adaptec ASC-29320 U320 (rev 03)

TIA

/proc/scsi/scsi:

Attached devices:
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: TOSHIBA Model: CD-ROM XM-6201TA Rev: 1030
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 04 Lun: 00
Vendor: IOMEGA Model: ZIP 100 Rev: E.08
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: MAXTOR Model: ATLAS10K4_36WLS Rev: DFV0
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi1 Channel: 00 Id: 01 Lun: 00
Vendor: FUJITSU Model: MAJ3364MP Rev: 0115
Type: Direct-Access ANSI SCSI revision: 04

/proc/scsi/aic79xx/0:
...
Target 2 Negotiation Settings
User: 40.000MB/s transfers (20.000MHz RDSTRM|DT, 16bit)
Goal: 10.000MB/s transfers (10.000MHz)
Curr: 10.000MB/s transfers (10.000MHz)
Transmission Errors 0
Channel A Target 2 Lun 0 Settings
Commands Queued 25
Commands Active 0
Command Openings 1
Max Tagged Openings 0
Device Queue Frozen Count 0
Target 4 Negotiation Settings
User: 40.000MB/s transfers (20.000MHz RDSTRM|DT, 16bit)
Goal: 3.300MB/s transfers
Curr: 3.300MB/s transfers
Transmission Errors 0
Channel A Target 4 Lun 0 Settings
Commands Queued 7
Commands Active 0
Command Openings 1
Max Tagged Openings 0
Device Queue Frozen Count 0

/proc/scsi/aic79xx/1:

Target 0 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|QAS, 16bit)
Goal: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
Curr: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
Transmission Errors 0
Channel A Target 0 Lun 0 Settings
Commands Queued 42238
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0
Target 1 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|QAS, 16bit)
Goal: 160.000MB/s transfers (80.000MHz DT, 16bit)
Curr: 160.000MB/s transfers (80.000MHz DT, 16bit)
Transmission Errors 0
Channel A Target 1 Lun 0 Settings
Commands Queued 1030
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0

dmesg:

SCSI subsystem driver Revision: 1.00
PCI: Setting latency timer of device 03:02.0 to 64
PCI: Setting latency timer of device 03:02.1 to 64
scsi0 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 1.3.10
<Adaptec 29320 Ultra320 SCSI adapter>
aic7901A: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66Mhz, 512 SCBs

scsi1 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 1.3.10
<Adaptec 29320 Ultra320 SCSI adapter>
aic7901A: Ultra320 Wide Channel B, SCSI Id=7, PCI 33 or 66Mhz, 512 SCBs

blk: queue f7e5ce18, I/O limit 4095Mb (mask 0xffffffff)
(scsi1:A:0): 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
(scsi1:A:1): 160.000MB/s transfers (80.000MHz DT, 16bit)
(scsi0:A:2): 10.000MB/s transfers (10.000MHz)
Vendor: TOSHIBA Model: CD-ROM XM-6201TA Rev: 1030
Type: CD-ROM ANSI SCSI revision: 02
blk: queue f7e5ca18, I/O limit 4095Mb (mask 0xffffffff)
Vendor: IOMEGA Model: ZIP 100 Rev: E.08
Type: Direct-Access ANSI SCSI revision: 02
blk: queue f7e5c418, I/O limit 4095Mb (mask 0xffffffff)
Vendor: MAXTOR Model: ATLAS10K4_36WLS Rev: DFV0
Type: Direct-Access ANSI SCSI revision: 03
blk: queue f7e05818, I/O limit 4095Mb (mask 0xffffffff)
Vendor: FUJITSU Model: MAJ3364MP Rev: 0115
Type: Direct-Access ANSI SCSI revision: 04
blk: queue f7e05618, I/O limit 4095Mb (mask 0xffffffff)
scsi1:A:0:0: Tagged Queuing enabled. Depth 32
scsi1:A:1:0: Tagged Queuing enabled. Depth 32
Attached scsi removable disk sda at scsi0, channel 0, id 4, lun 0
Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0
Attached scsi disk sdc at scsi1, channel 0, id 1, lun 0
sda: Unit Not Ready, sense:
Current 00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x11 0x00 0x00 0x00 0x00 0x3a
0x00 0x00 0x00 0x00 0x00 0xff 0xfe 0x01 0x00 0x00 0x00 0x00
sda : READ CAPACITY failed.
sda : status = 1, message = 00, host = 0, driver = 08
Current sd00:00: sns = 70 2
ASC=3a ASCQ= 0
Raw sense data:0x70 0x00 0x02 0x00 0x00 0x00 0x00 0x11 0x00 0x00 0x00 0x00 0x3a
0x00 0x00 0x00 0x00 0x00 0xff 0xfe 0x01 0x00 0x00 0x00 0x00
sda : block size assumed to be 512 bytes, disk size 1GB.
Partition check:
sda: I/O error: dev 08:00, sector 0
I/O error: dev 08:00, sector 0
unable to read partition table
SCSI device sdb: 71833096 512-byte hdwr sectors (36779 MB)
sdb: sdb1 sdb2 sdb3 sdb4
SCSI device sdc: 71390320 512-byte hdwr sectors (36552 MB)
sdc: sdc1 sdc2 sdc3 sdc4 < sdc5 >


--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandrake Linux release 10.0 (Cooker) for i586
Linux 2.6.3-rc1-jam1 (gcc 3.3.2 (Mandrake Linux 10.0 3.3.2-4mdk))
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