Date:	Mon, 10 Dec 2007 18:21:19 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	trash can <thetrashcan@...thlink.net>
Cc:	linux-kernel@...r.kernel.org, ide <linux-ide@...r.kernel.org>
Subject: Re: Iomega ZIP-100 drive unsupported with jmicron JMB361 chip?

(linux-ide cc'ed)

trash can wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> I have tolerated this problem for a year and do not post to this list in
> haste. I have posted on forums and searched the community over the past
> year. I have looked at the list archive on gossamer-threads.com for
> solutions. With Fedora Core 6 unsupported (the last kernel for which my
> zip drive worked), it is time for my last attempt at a solution. Please
> CC: any response as I have not joined the list. I have compiled a
> kernel-debug RPM and can run this if its output would help. Thank you
> for any time you might devote to this problem.
> 
> motherboard: MSI P965 Platinum/Intel P965 Express Chipset Based (MS-7238
> series)
> Fedora 8 : kernel 2.6.23.1-42.fc8
> Iomega Zip drive internal Model Z100ATAPI
> 
> lspci
> 03:00.0 SATA controller: JMicron Technologies, Inc. JMB361 AHCI/IDE (rev 02)
> 03:00.1 IDE interface: JMicron Technologies, Inc. JMB361 AHCI/IDE (rev 02)
> 
> # lsmod | grep ata
> pata_jmicron            8257  0
> ata_generic             8901  0
> ata_piix               16709  0
> libata                 99633  4 ahci,pata_jmicron,ata_generic,ata_piix
> scsi_mod              119757  4 sr_mod,sg,libata,sd_mod
> 
> I have recently changed the BIOS setting for the SATA#1 Controller from
> [IDE] to [AHCI] with no effect. I assume AHCI is correct?

AHCI is better, yes. It shouldn't be relevant this this problem though.

> 
> Text below attached as text.txt for readability.
> from dmesg:
> libata version 2.21 loaded.
> device-mapper: ioctl: 4.11.0-ioctl (2006-10-12) initialised: dm-devel@...hat.com
> PCI: Enabling device 0000:03:00.1 (0000 -> 0001)
> ACPI: PCI Interrupt 0000:03:00.1[B] -> GSI 17 (level, low) -> IRQ 17
> PCI: Setting latency timer of device 0000:03:00.1 to 64
> scsi0 : pata_jmicron
> scsi1 : pata_jmicron
> ata1: PATA max UDMA/100 cmd 0x0001cc00 ctl 0x0001c882 bmdma 0x0001c400 irq 17
> ata2: PATA max UDMA/100 cmd 0x0001c800 ctl 0x0001c482 bmdma 0x0001c408 irq 17
> ata1.00: ATAPI: LITE-ON DVDRW SOHW-1693S, KS0B, max UDMA/66
> ata1.01: ATAPI: IOMEGA  ZIP 100       ATAPI, 05.H, max MWDMA1, CDB intr
> ata1.00: configured for UDMA/66
> ata1.01: configured for MWDMA1
> scsi 0:0:0:0: CD-ROM            LITE-ON  DVDRW SOHW-1693S KS0B PQ: 0 ANSI: 5
> scsi 0:0:1:0: Direct-Access     IOMEGA   ZIP 100          05.H PQ: 0 ANSI: 5
> sd 0:0:1:0: [sda] 196608 512-byte hardware sectors (101 MB)
> sd 0:0:1:0: [sda] Write Protect is off
> sd 0:0:1:0: [sda] Mode Sense: 00 40 00 00
> sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> sd 0:0:1:0: [sda] 196608 512-byte hardware sectors (101 MB)
> sd 0:0:1:0: [sda] Write Protect is off
> sd 0:0:1:0: [sda] Mode Sense: 00 40 00 00
> sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
>  sda:<6>sd 0:0:1:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
> sd 0:0:1:0: [sda] Sense Key : Hardware Error [current]
> sd 0:0:1:0: [sda] Add. Sense: Scsi parity error
> end_request: I/O error, dev sda, sector 0
> Buffer I/O error on device sda, logical block 0
> 
> If a disk is inserted into the drive (/var/log/messages)
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Spinning up disk.....<5>sd 0:0:1:0: [sda] Spinning up disk....ready
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] 196608 512-byte hardware sectors (101 MB)
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Write Protect is off
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] 196608 512-byte hardware sectors (101 MB)
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Write Protect is off
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> Dec 10 14:22:53 localhost kernel:  sda:<6>sd 0:0:1:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Sense Key : Hardware Error [current]
> Dec 10 14:22:53 localhost kernel: sd 0:0:1:0: [sda] Add. Sense: Scsi parity error
> Dec 10 14:22:53 localhost kernel: end_request: I/O error, dev sda, sector 0
> Dec 10 14:22:53 localhost kernel: printk: 42 messages suppressed.
> Dec 10 14:22:53 localhost kernel: Buffer I/O error on device sda, logical block 0

That is rather curious. There's no sign of any libata error handling 
going on.. Maybe the drive is actually returning that error code in the 
ATAPI CDB, or at least we think it is?

You are sure that this drive still works with older kernels using 
drivers/ide, and that the hardware didn't break at some point, I assume?

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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