Messages in this thread | | | Date | Wed, 8 Dec 2004 22:46:50 +0100 | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: PDC202XX_OLD broken |
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On Wed, 8 Dec 2004 21:25:56 +0000, Alan Pope <alan.pope@gmail.com> wrote: > On Tue, 7 Dec 2004 21:58:52 +0100, Bartlomiej Zolnierkiewicz > <bzolnier@gmail.com> wrote: > > You are using 40c cable instead of 80c one. > > Thus transfer rate is limited to UDMA33. > > > > No, I'm using an 80c cable. I have even gone out and bought a new 80c > one just to make sure the cable isn't broken. I have also got two > identical disks, and experience exactly the same problem on both.
Ah, my mistake, you have 40c cable connected to VIA not Promise...
> I booted with "ide2=dma" because it was booting with the disk in pio mode.
If you are talking about:
ide3: BM-DMA at 0xd008-0xd00f, BIOS settings: hdg:pio, hdh:pio
it reports BIOS settings not the ones used by driver, no need for "ide=dma2" if you have CONFIG_IDEDMA_PCI_AUTO=y.
> > Moreover pdc202xx_old has a bug in cable detection code. > > pdc202xx_old_cable_detect() always returns '0' (which means > > 80c cable) due to a sloppy coding - result of CIS & mask is > > truncated to 8 bits although CIS holds cable info in bits 10-11. > > > > Does this fix work for you? > > > > Not tried it, but it wouldn't help me would it? I *do* have an 80c > cable, and the disk does show up in dmesg as a UDMA100 disk..
It wouldn't, it must be another bug. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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