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SubjectRe: UDMA on SiS5513/5591 changed from 2.2.x to 2.4.x?
Is the same behavior exhibited in 2.2.x w/Andre's IDE
patch?

Dewet Diener <dewet@bigfoot.com> wrote:
> I am experiencing problems with UDMA on my system on
> 2.4 kernels. It's an
> ASUS socket-7 MB, over 2 years old. Below follows a
> boot log on
> 2.4.0-test7:
>
> ide: Assuming 33MHz system bus speed for PIO modes;
> override with
> idebus=xx
> SIS5513: IDE controller on PCI bus 00 dev 01
> SIS5513: chipset revision 208
> SIS5513: not 100% native mode: will probe irqs later
> SiS5591
> ide0: BM-DMA at 0x4000-0x4007, BIOS settings:
> hda:pio, hdb:pio
> ide1: BM-DMA at 0x4008-0x400f, BIOS settings:
> hdc:pio, hdd:pio
> hda: FUJITSU MPE3102AT, ATA DISK drive
> hdb: WDC AC14300R, ATA DISK drive
> hdc: QUANTUM FIREBALL EL7.6A, ATA DISK drive
> hdd: Hewlett-Packard CD-Writer Plus 8100, ATAPI
> CDROM drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: 20016348 sectors (10248 MB) w/512KiB Cache,
> CHS=1245/255/63, UDMA(33)
> hdb: 8421840 sectors (4312 MB) w/512KiB Cache,
> CHS=524/255/63, UDMA(33)
> hdc: 15032115 sectors (7696 MB) w/418KiB Cache,
> CHS=15907/15/63, UDMA(33)
> Partition check:
> /dev/ide/host0/bus0/target0/lun0: p1
> /dev/ide/host0/bus0/target1/lun0: p1 p2 < p5 >
> /dev/ide/host0/bus1/target0/lun0:hdc: timeout
> waiting for DMA
> ide_dmaproc: chipset supported ide_dma_timeout func
> only: 14
> hdc: irq timeout: status=0x58 { DriveReady
> SeekComplete DataRequest }
> hdc: timeout waiting for DMA
> ide_dmaproc: chipset supported ide_dma_timeout func
> only: 14
> hdc: irq timeout: status=0x58 { DriveReady
> SeekComplete DataRequest }
> spurious 8259A interrupt: IRQ7.
> hdc: timeout waiting for DMA
> ide_dmaproc: chipset supported ide_dma_timeout func
> only: 14
> hdc: irq timeout: status=0x58 { DriveReady
> SeekComplete DataRequest }
> hdc: timeout waiting for DMA
> ide_dmaproc: chipset supported ide_dma_timeout func
> only: 14
> hdc: irq timeout: status=0x58 { DriveReady
> SeekComplete DataRequest }
> hdc: DMA disabled
> hdd: DMA disabled
> ide1: reset: success
> [PTBL] [935/255/63] p1 p2
>
> On 2.2.17pre20 (and back to 2.2.16 at least)
> everything works fine --
> there are no "timeout waiting for DMA" problems.
> However, the third (and
> probably fourth as well -- haven't tested it as the
> CD-ROM is permanently
> there) IDE device (hdc) doesn't detect the geometry
> correctly. If I swap
> any of the drives, the same happens - hdc always
> detects the partitions
> with "[PTBL] <geom>" prepended, with <geom>
> differing from the "real"
> geometry as detected when on ide0.
>
> The "spurious 8259A interrupt: IRQ7" line only
> started appearing after I
> (recently) added a NCR53c810 SCSI controller for
> playing with...
>
> I have found that having a device on hdc does
> influence this, as
> disconnecting it enables me to switch on UDMA in the
> BIOS (I'm currently
> running it disabled). If I have it enabled in the
> BIOS on boot, I get
> "timeout waiting for DMA" on hda and hdb as well.
> Could this be a
> limitation of the chipset straining on four devices?
>
> I'd appreciate any info...
> Regards,
> Dewet
>
>
>
> -
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=====
-Steven
====================================================
"The most foolish mistake we could possibly make would be to allow the subject races to possess arms. History shows that all conquerors who have allowed their subject races to carry arms have prepared their own downfall by doing so."
Adolph Hitler

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