Does it work as kernel parameter?
I tried libata_dma_mask=0x4 and to set 0xf or 0xff - doesn't help. How to
disable DMA in libata, if it is compiled in kernel?
On Thu, 8 Nov 2007 01:30:53 +0100, Bartlomiej Zolnierkiewicz wrote
> On Thursday 08 November 2007, Denys Fedoryshchenko wrote:
> > 2.6.24-rc2 not working very well
> >
> >
> > dmesg
> > [ 12.386395] Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> > [ 12.405579] ide: Assuming 33MHz system bus speed for PIO modes;
override
> > with idebus=xx
> > [ 12.430441] SC1200: IDE controller (0x100b:0x0502 rev 0x01) at PCI
slot
> > 0000:00:12.2
> > [ 12.454070] SC1200: not 100% native mode: will probe irqs later
> > [ 12.471947] ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:pio,
> > hdb:pio
> > [ 12.493873] ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:pio,
> > hdd:pio
> > [ 12.515810] Probing IDE interface ide0...
> > [ 12.528810] Clocksource tsc unstable (delta = -497423729 ns)
> > [ 12.545888] Time: pit clocksource has been installed.
> > [ 12.563379] hda: SanDisk SDCFH-1024, CFA DISK drive
> > [ 12.578340] hda: applying conservative PIO "downgrade"
> > [ 12.593869] hda: host max PIO4 wanted PIO255(auto-tune) selected PIO1
> > [ 12.594006] hda: MW DMA 2 mode selected
> > [ 12.594297] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> > [ 12.608778] Probing IDE interface ide1...
> > [ 12.623192] hda: max request size: 128KiB
> > [ 12.635322] hda: 2001888 sectors (1024 MB) w/1KiB Cache, CHS=1986/16/
63,
> > DMA
> > [ 12.657134] hda:<4>hda: dma_timer_expiry: dma status == 0x21
> > [ 12.865846] hda: DMA timeout error
> > [ 12.876092] ide_dma_end dma_stat=21 err=1 newerr=0
> > [ 12.890753] hda: dma timeout error: status=0x58 { DriveReady
SeekComplete
> > DataRequest }
> > [ 12.914977] ide: failed opcode was: unknown
> > [ 12.927743] hda: DMA disabled
> > [ 12.937035] ide0: reset: success
> > [ 12.948324] hda1
> >
> > Mounting taking long time on 1GB card cause of DMA issues. In dmesg i am
not
> > sure about timestamp showing few seconds, in real life it took about 2
> > minutes.
>
> Please try booting with "hda=nodma".
>
> It could be a hardware problem (CF adapter without DMA lines).
>
> Thanks,
> Bart
--
Denys Fedoryshchenko
Technical Manager
Virtual ISP S.A.L.
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