Re: DMA issue in 2.6.12 ???
On Wed, Aug 17, 2005 at 05:33:50PM -0500, Ardo van Rangelrooij wrote:
> 2.6.11:
>
> BIOS-provided physical RAM map:
> ACPI: IRQ0 used by override.
> ACPI: IRQ2 used by override.
> ACPI: IRQ9 used by override.
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
> ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:DMA
> Probing IDE interface ide0...
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> Probing IDE interface ide1...
> ide1 at 0x170-0x177,0x376 on irq 15
> Probing IDE interface ide2...
> Probing IDE interface ide3...
> Probing IDE interface ide4...
> Probing IDE interface ide5...
> /dev/ide/host0/bus0/target1/lun0: p1
> /dev/ide/host0/bus1/target0/lun0: p1
> /dev/ide/host0/bus1/target1/lun0: p1
>
> 2.6.12:
>
> BIOS-provided physical RAM map:
> ACPI: IRQ0 used by override.
> ACPI: IRQ2 used by override.
> ACPI: IRQ9 used by override.
> Boot video device is 0000:01:00.0
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> Probing IDE interface ide0...
> Probing IDE interface ide1...
> Probing IDE interface ide2...
> Probing IDE interface ide3...
> Probing IDE interface ide4...
> Probing IDE interface ide5...
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> /dev/ide/host0/bus0/target1/lun0: p1
> /dev/ide/host1/bus0/target0/lun0: p1
> /dev/ide/host1/bus0/target1/lun0: p1
> VP_IDE: port 0x01f0 already claimed by ide0
> VP_IDE: port 0x0170 already claimed by ide1
That is certainly the generic driver loading instead on 2.6.12.
> and dmesg | grep VP_IDE gives:
>
> 2.6.11:
>
> VP_IDE: IDE controller at PCI slot 0000:00:0f.1
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> VP_IDE: VIA vt8237 (rev 00) IDE UDMA133 controller on pci0000:00:0f.1
>
> 2.6.12:
>
> VP_IDE: IDE controller at PCI slot 0000:00:0f.1
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> VP_IDE: VIA vt8237 (rev 00) IDE UDMA133 controller on pci0000:00:0f.1
> VP_IDE: port 0x01f0 already claimed by ide0
> VP_IDE: port 0x0170 already claimed by ide1
> VP_IDE: neither IDE port enabled (BIOS)
>
> And when doing lsmod, 2.6.11 has via82cxxx immediately after ide-core and way
> before ide-generic, while 2.6.12 has ide-generic followed by via82cxxx.
Yeah initrd has the load order wrong on 2.6.12 then.
> Using /etc/modules doesn't work, since discover and company already have done
> the damage.
/etc/modules runs before discover as far as I know. initrd may already
have done it. adding the via82cxxx driver (check name to be sure) to
/etc/mkinitrd/modules and then rebuilding the /boot/initrd image for
your kernel should help. Anything you list explicitly is loaded first
by initrd.
Len Sorensen
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