VIA/PDC/Athlon

VIA/PDC/Athlon

[Jussi Laako]

I tested 2.4.4-ac9 today on A7V133 machine. It booted up, but can't stand
any load. It will deadlock (without oops) when the network/disk system faces
any load.

There is also some new bug in VIA IDE driver. It misdetects cable as 80-w
when it's only 40-w and causes some CRC errors and speed dropping. Some
older kernels correctly detected the cable as 40-w and used UDMA33, this one
tries to use UDMA100 and fails (of course). Is there any way to force cable
detection to 40-w?

 - Jussi Laako

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Re: VIA/PDC/Athlon

[Vojtech Pavlik]

On Wed, May 16, 2001 at 08:25:56PM +0300, Jussi Laako wrote:

> I tested 2.4.4-ac9 today on A7V133 machine. It booted up, but can't stand
> any load. It will deadlock (without oops) when the network/disk system faces
> any load.
> 
> There is also some new bug in VIA IDE driver. It misdetects cable as 80-w
> when it's only 40-w and causes some CRC errors and speed dropping. Some
> older kernels correctly detected the cable as 40-w and used UDMA33, this one
> tries to use UDMA100 and fails (of course). Is there any way to force cable
> detection to 40-w?

There were no changes lately in the VIA driver. Can you spot where the
problems begun?

-- 
Vojtech Pavlik
SuSE Labs

Re: VIA/PDC/Athlon

[Jussi Laako]

Vojtech Pavlik wrote:
> 
> > There is also some new bug in VIA IDE driver. It misdetects cable as 
> > 80-w when it's only 40-w and causes some CRC errors and speed dropping. 
> There were no changes lately in the VIA driver. Can you spot where the
> problems begun?

RH 2.4.2-2 works correctly, but 2.4.4-ac9 doesn't. I think 2.4.3 didn't
work.

 - Jussi Laako

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Re: VIA/PDC/Athlon

[Alan Cox]

> > There were no changes lately in the VIA driver. Can you spot where the
> > problems begun?
> 
> RH 2.4.2-2 works correctly, but 2.4.4-ac9 doesn't. I think 2.4.3 didn't
> work.

RH 2.4.2-2 and 2.4.4-ac9 are I believe the same driver exactly. 2.4.3 is an
ancient known not to work well driver

Re: VIA/PDC/Athlon

[Jussi Laako]

Alan Cox wrote:
> 
> RH 2.4.2-2 and 2.4.4-ac9 are I believe the same driver exactly. 2.4.3 is 
> an ancient known not to work well driver

Ummm... Here's stripped dmesg of both kernels... Is this compiler thingie or
Athlon optimizations?
Notice also different detected PDC20265 BIOS settings! So 2.4.4-ac9 detects
those BIOS settings correctly and 2.4.2-2 doesn't. That's probably reason
why 2.4.2-2 works?

--- 8< ---

Linux version 2.4.4-ac9 (root@davinci) (gcc version 2.95.3 20010315
(release)) #1 Wed May 16 17:37:30 EEST 2001

Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 21
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 vt82c686b (rev 40) IDE UDMA100 controller on pci00:04.1
    ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:DMA
PDC20265: IDE controller on PCI bus 00 dev 88
PCI: Found IRQ 10 for device 00:11.0
PDC20265: chipset revision 2
PDC20265: not 100% native mode: will probe irqs later
PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
    ide2: BM-DMA at 0x7400-0x7407, BIOS settings: hde:DMA, hdf:DMA
    ide3: BM-DMA at 0x7408-0x740f, BIOS settings: hdg:DMA, hdh:DMA
hda: IBM-DTLA-307030, ATA DISK drive
hdb: SONY CDU4811, ATAPI CD/DVD-ROM drive
hde: IBM-DTLA-307030, ATA DISK drive
hdf: IBM-DTLA-307030, ATA DISK drive
hdg: IBM-DTLA-307030, ATA DISK drive
hdh: IBM-DTLA-307030, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide2 at 0x8800-0x8807,0x8402 on irq 10
ide3 at 0x8000-0x8007,0x7802 on irq 10
hda: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=3737/255/63, UDMA(100)
hde: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
hdf: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
hdg: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
hdh: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
Partition check:
 hda:hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
ide0: reset: success
 hda1 hda2 hda3 hda4
 hde: hde1 hde2 hde3 hde4
 hdf: unknown partition table
 hdg: unknown partition table
 hdh: unknown partition table

--- 8< ---

Linux version 2.4.2-2 (root@porky.devel.redhat.com) (gcc version 2.96
20000731 (Red Hat Linux 7.1 2.96-79)) #1 Sun Apr 8 20:41:30 EDT 2001

Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 21
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 vt82c686b (rev 40) IDE UDMA100 controller on pci00:04.1
    ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:DMA
PDC20265: IDE controller on PCI bus 00 dev 88
PCI: Found IRQ 10 for device 00:11.0
PDC20265: chipset revision 2
PDC20265: not 100% native mode: will probe irqs later
PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
    ide2: BM-DMA at 0x7400-0x7407, BIOS settings: hde:DMA, hdf:pio
    ide3: BM-DMA at 0x7408-0x740f, BIOS settings: hdg:pio, hdh:pio
hda: IBM-DTLA-307030, ATA DISK drive
hdb: SONY CDU4811, ATAPI CD/DVD-ROM drive
hde: IBM-DTLA-307030, ATA DISK drive
hdf: IBM-DTLA-307030, ATA DISK drive
hdg: IBM-DTLA-307030, ATA DISK drive
hdh: IBM-DTLA-307030, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide2 at 0x8800-0x8807,0x8402 on irq 10
ide3 at 0x8000-0x8007,0x7802 on irq 10
hda: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=3737/255/63, UDMA(33)
hde: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
hdf: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
hdg: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
hdh: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=59560/16/63, UDMA(100)
Partition check:
 hda: hda1 hda2 hda3 hda4
 hde: hde1 hde2 hde3 hde4
 hdf: unknown partition table
 hdg: unknown partition table
 hdh: unknown partition table

--- 8< ---

 - Jussi Laako

-- 
PGP key fingerprint: 161D 6FED 6A92 39E2 EB5B  39DD A4DE 63EB C216 1E4B
Available at PGP keyservers

Re: VIA/PDC/Athlon

[Alan Cox]

> Ummm... Here's stripped dmesg of both kernels... Is this compiler thingie or
> Athlon optimizations?

Neither by the look of it

> Notice also different detected PDC20265 BIOS settings! So 2.4.4-ac9 detects
> those BIOS settings correctly and 2.4.2-2 doesn't. That's probably reason
> why 2.4.2-2 works?

Could be.

> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }

CRC errors are cable errors so that bit is reasonable in itself

Re: VIA/PDC/Athlon - IDE error theory

[Wilfried Weissmann]

Alan Cox wrote:
> > hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> 
> CRC errors are cable errors so that bit is reasonable in itself

Could this be caused by the RAID configuration? The first sector of the
first disk holds the partition table. The other disks in the raid have
no valid partition table:

dmesg message from Jussi Laako:
 hdf: unknown partition table
 hdg: unknown partition table
 hdh: unknown partition table
[snip]

If there is a raid (1+)0 configured you got a volume that is bigger than
the first hd. So if you have extended partitions or freebsd slices which
are located beyond the capacity of the hd, then the partition table
check would have to read datastructures which have an offset which is to
high. => read error during partition check => nasty error messages

I have the error message problem on my box. DMA is disabled because of
the error on /dev/hda. But a hdparm -d 1 /dev/hda fixes this, and I do
not get more errors regarding that. Everything works fine. (I did not
compile with Athlon optimization.)

regards,
Wilfried

Re: VIA/PDC/Athlon - IDE error theory

[Jussi Laako]

Wilfried Weissmann wrote:
> > > hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > > hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > CRC errors are cable errors so that bit is reasonable in itself
> Could this be caused by the RAID configuration? The first sector of the

Yes, it's RAID5. But the error message is because of misdetected cable...

 - Jussi Laako

-- 
PGP key fingerprint: 161D 6FED 6A92 39E2 EB5B  39DD A4DE 63EB C216 1E4B
Available at PGP keyservers

Re: VIA/PDC/Athlon

[Alan Cox]

> I tested 2.4.4-ac9 today on A7V133 machine. It booted up, but can't stand
> any load. It will deadlock (without oops) when the network/disk system faces
> any load.

Let me guess 'ide=nodma' fixes that ?

> There is also some new bug in VIA IDE driver. It misdetects cable as 80-w
> when it's only 40-w and causes some CRC errors and speed dropping. Some

Since when - the VIA driver in -ac has not changed for a very long time

> older kernels correctly detected the cable as 40-w and used UDMA33, this one
> tries to use UDMA100 and fails (of course). Is there any way to force cable
> detection to 40-w?

it shouldnt ever misdetect - thats a bug. 

Re: VIA/PDC/Athlon

[Zilvinas Valinskas]

On Wed, May 16, 2001 at 08:25:56PM +0300, Jussi Laako wrote:
> I tested 2.4.4-ac9 today on A7V133 machine. It booted up, but can't stand
> any load. It will deadlock (without oops) when the network/disk system faces
> any load.
> 
reset/clear CMOS with jumper. I get this kind of instability each time
I have to boot to win9x (with latest and greatest via drivers) and back
to linux. Just of sudden linux freezes or if I have apcid running 
sometimes it oops' on boot sometimes later ... lots of defunc  kacpid ...
threads.

looks like VIA drivers do something to hardware (or maybe only ACPI part
of hardware ... I don't know.) and linux can't handle hardware is this
new "after win9x" state ... 

reset/clear CMOS with jumper helped. 

MB ABit KT7A-RAID

00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 03)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)

VT82C686b actually :)


00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06)
00:07.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 16)
00:07.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 16)
00:07.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
00:08.0 Ethernet controller: Bridgecom, Inc: Unknown device 0985 (rev 11)
00:0f.0 Multimedia audio controller: Creative Labs SB Live! EMU10000 (rev 07)
00:0f.1 Input device controller: Creative Labs SB Live! (rev 07)
01:00.0 VGA compatible controller: ATI Technologies Inc: Unknown device 5144


> 
>  - Jussi Laako
> 
> -- 
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> Available at PGP keyservers
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-- 
Zilvinas Valinskas

Re: VIA/PDC/Athlon

[Jussi Laako]

Zilvinas Valinskas wrote:
> 
> looks like VIA drivers do something to hardware (or maybe only ACPI part
> of hardware ... I don't know.) and linux can't handle hardware is this
> new "after win9x" state ...
> 
> reset/clear CMOS with jumper helped.

I have ACPI disabled from the kernel. The machine have never seen any
windows...

 - Jussi Laako

-- 
PGP key fingerprint: 161D 6FED 6A92 39E2 EB5B  39DD A4DE 63EB C216 1E4B
Available at PGP keyservers