Re: Kernel 2.5.40 DMA and mm issues

From: Zwane Mwaikambo (zwane@linuxpower.ca)
Date: Fri Oct 04 2002 - 15:12:14 EST


On Fri, 4 Oct 2002, Nick Sanders wrote:

> I get the same 'DMA disabled' messages with 2.5 but DMA is never actually
> disabled so I wouldn't rely on them being accurate (see below)
>
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> VP_IDE: IDE controller at PCI slot 00:11.1
> PCI: Hardcoded IRQ 14 for device 00:11.1
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> VP_IDE: VIA vt8233a (rev 00) IDE UDMA133 controller on pci00:11.1
> ide0: BM-DMA at 0xff00-0xff07, BIOS settings: hda:DMA, hdb:DMA
> ide1: BM-DMA at 0xff08-0xff0f, BIOS settings: hdc:DMA, hdd:pio
> hda: WDC WD400BB-00CAA0, ATA DISK drive
> hdb: TOSHIBA DVD-ROM SD-M1402, ATAPI CD/DVD-ROM drive
> hda: DMA disabled
> hdb: DMA disabled
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> hdc: LITE-ON LTR-24102B, ATAPI CD/DVD-ROM drive
> hdc: DMA disabled
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: host protected area => 1
> hda: 78165360 sectors (40021 MB) w/2048KiB Cache, CHS=4865/255/63, UDMA(100)

IIRC not according to that line.

        Zwane

-- 
function.linuxpower.ca

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