Re: PROBLEM: alim15x3 later than 2.6.1 won't allow DMA to be turnedon

[Dave Croal]

Bartlomiej Zolnierkiewicz wrote:
> On Thursday 18 of March 2004 03:19, Dave Croal wrote:
>
> > The alim15x3 module in kernels 2.6.3 and 2.6.4 does not allow me to turn
> > on DMA via hdparm:
> >
> > hdparm -d1 /dev/hda
> > HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off)
> >
> > dmesg |grep -i ali
> > ALI15X3: IDE controller at PCI slot 0000:00:0f.0
> > ALI15X3: chipset revision 32
> > ALI15X3: not 100% native mode: will probe irqs later
> > ALI15X3: port 0x01f0 already claimed by ide0
> > ALI15X3: port 0x0170 already claimed by ide1
> > ALI15X3: neither IDE port enabled (BIOS)
> >
> > ---
> >
> > In kernel 2.6.1 it worked OK:
> >
> > hdparm -d1 /dev/hda
> > /dev/hda:
> >  setting using_dma to 1 (on)
> >  using_dma    =  1 (on)
> >
> > dmesg |grep -i ali
> > ALI15X3: IDE controller at PCI slot 0000:00:0f.0
> > ALI15X3: chipset revision 32
> > ALI15X3: not 100% native mode: will probe irqs later
> >     ide0: BM-DMA at 0x78c0-0x78c7, BIOS settings: hda:DMA, hdb:pio
> >     ide1: BM-DMA at 0x78c8-0x78cf, BIOS settings: hdc:DMA, hdd:pio
> > ide0: I/O resource 0x3F6-0x3F6 not free.
> > hda: ERROR, PORTS ALREADY IN USE
> > register_blkdev: cannot get major 3 for ide0
> > ide1: I/O resource 0x376-0x376 not free.
> > hdc: ERROR, PORTS ALREADY IN USE
> > register_blkdev: cannot get major 22 for ide1
> > Module alim15x3 cannot be unloaded due to unsafe usage in
> > include/linux/module.h:483
>
>
> These are errors - ide0 and ide1 are already used by generic IDE driver.
> It was fixed in 2.6.2 but side-effect of the fix is that you must make sure
> that ide_generic driver is not compiled in or loaded if it's modular.
>
> Please make sure CONFIG_IDE_GENERIC is 'n' in your .config.
>
> Regards,
> Bartlomiej

That worked, I am happily using DMA with alim15x3 on 2.6.4 now. Thank 
you for your help.

Dave Croal
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