Messages in this thread |  | | Date | Fri, 17 Nov 2000 00:13:18 +0000 | From | Anton Altaparmakov <> | Subject | How to add a drive to DMA black list? |
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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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