sorted - was: How to add a drive to DMA black list?

From: Anton Altaparmakov (aia21@cam.ac.uk)
Date: Thu Nov 16 2000 - 20:19:55 EST

The drive was being added to the black lists fine it's just that I had PIIX
tuning enabled which caused the good/bad dma tables check to be bypassed
completely. - So disabling PIIX tuning made my PC boot fine.

Regards,

Anton

At 00:13 17/11/2000, Anton Altaparmakov wrote:
>Hello all,
>
>I have an ide hard drive that misbehaves when the option "enable DMA at
>boot time" (2.4.x kernel) is selected (this is on a on board ide
>controller). But on the other hand I have a Promise Ultra-ATA-100
>controller with an IBM ATA-100 drive that, according to the menuconfig
>information and the information at the top of the driver requires the
>"enable DMA at boot time" feature to be selected.
>
>I tried adding the string that is output for the bad drive by hdparm -i
>into drivers/ide/ide-dma.c::drive_blacklist and
>drivers/ide/ide-dma.c::bad_dma_drives but the kernel still says that it is
>using DMA and the kernel hangs after displaying:
>
>PIIX: chipset revision 2
>PIIX: not 100% native mode: will probe irqs later
>[snip]
>PDC20267: IDE controller on PCI bus 00 dev 98
>PDC20267: chipset revision 2
>PDC20267: not 100% native mode: will probe irqs later
>PDC20267: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
>[snip]
>hdc: Conner Peripherals 1275MB - CFS1275A, ATA DISK drive
>hde: IBM-DTLA-307045, ATA DISK drive
>[snip]
>hdc: 2496876 sectors (1278 MB) w/64KiB Cache, CHS=2477/16/63, DMA
>hde: 90069840 sectors (46116 MB) w/1916KiB Cache, CHS=89355/16/63. UDMA(100)
>Partition check:
> hda: hda1 hda2 < hda5 >
> hdc:hdc: timout waiting for DMA
>ide_dmaproc: chipset supported ide_dma_timeout func only: 14
>hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
>_
>Dead.
>
>What should I do? Thanks in advance,
>
>Anton
>
>--
> "Education is what remains after one has forgotten everything he
> learned in school." - Albert Einstein
>--
>Anton Altaparmakov Voice: +44-(0)1223-333541(lab) /
>+44-(0)7712-632205(mobile)
>Christ's College eMail: AntonA@bigfoot.com / aia21@cam.ac.uk
>Cambridge CB2 3BU ICQ: 8561279
>United Kingdom WWW: http://www-stu.christs.cam.ac.uk/~aia21/
>
>-
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-- 
      "Education is what remains after one has forgotten everything he 
learned in school." - Albert Einstein
-- 
Anton Altaparmakov  Voice: +44-(0)1223-333541(lab) / +44-(0)7712-632205(mobile)
Christ's College    eMail: AntonA@bigfoot.com / aia21@cam.ac.uk
Cambridge CB2 3BU    ICQ: 8561279
United Kingdom       WWW: http://www-stu.christs.cam.ac.uk/~aia21/

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