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SubjectRe: linux 2.4.19-preX IDE bugs
On Thu, 13 Jun 2002, Nick Evgeniev wrote:

> Hi,
>
> First of all I have to claim that it's a driver fault not a hardware!
> Because after switching
> the same cable on different (VIA UDMA66) controller everything seems to work
> ok for last 3 days.

That sounds more like USER ERROR. If you still had the error after
switching cable, I would still suspect hardware given it is VIA.
It also still may be hardware, since cables can come odd or even in
grounding.

> And I have no kernel errors. Hence I conclude that it's a DRIVER bug.

If you had connected them correct the first time like they are now, you
would not have had a complaint. Next, maybe spend more money to get
quality hardware, since VIA hardware has a history of being poorly
intergrated.

Now think for two seconds or longer if needed.

It now works and the driver has not changed.

Conclusion, it is not the driver!

Have a good day,

Andre Hedrick
LAD Storage Consulting Group


> Well, lets get to hardware... I've got dual PIII MSI motheboard based on VIA
> chipset with extra IDE controller (promise) on board.
> Details:
> 1. CPU
> >---------------------------------------------------------------------------
> ----------------------------------
> processor : 1
> vendor_id : GenuineIntel
> cpu family : 6
> model : 8
> model name : Pentium III (Coppermine)
> stepping : 3
> cpu MHz : 600.027
> cache size : 256 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 2
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 mmx fxsr sse
> bogomips : 1199.30
> 2. PCI info:
> >---------------------------------------------------------------------------
> --------------------------------------------------------------
> 00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x]
> (rev c4)
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort+ >SERR- <PERR+
> Latency: 0
> Region 0: Memory at d0000000 (32-bit, prefetchable) [size=64M]
> Capabilities: [a0] AGP version 2.0
> Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
> Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
> Capabilities: [c0] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo
> MVP3/Pro133x AGP] (prog-if 00 [Normal decode])
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort+ >SERR- <PERR-
> Latency: 0
> Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> I/O behind bridge: 0000f000-00000fff
> Memory behind bridge: d4000000-dbffffff
> Prefetchable memory behind bridge: fff00000-000fffff
> BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
> Capabilities: [80] Power Management version 2
> Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South]
> (rev 22)
> Subsystem: VIA Technologies, Inc. VT82C686/A PCI to ISA Bridge
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping+ SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 0
>
> 00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 10)
> (prog-if 8a [Master SecP PriP])
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32
> Region 4: I/O ports at 9000 [size=16]
> Capabilities: [c0] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:07.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00
> [UHCI])
> Subsystem: Unknown device 0925:1234
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32, cache line size 08
> Interrupt: pin D routed to IRQ 19
> Region 4: I/O ports at 9400 [size=32]
> Capabilities: [80] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:07.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00
> [UHCI])
> Subsystem: Unknown device 0925:1234
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32, cache line size 08
> Interrupt: pin D routed to IRQ 19
> Region 4: I/O ports at 9800 [size=32]
> Capabilities: [80] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:07.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]
> (rev 30)
> Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Interrupt: pin ? routed to IRQ 9
> Capabilities: [68] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:07.5 Multimedia audio controller: VIA Technologies, Inc. AC97 Audio
> Controller (rev 20)
> Subsystem: VIA Technologies, Inc. AC97 Audio Controller
> Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Interrupt: pin C routed to IRQ 18
> Region 0: I/O ports at 9c00 [size=256]
> Region 1: I/O ports at a000 [size=4]
> Region 2: I/O ports at a400 [size=4]
> Capabilities: [c0] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:0c.0 Unknown mass storage controller: Promise Technology, Inc. 20265 (rev
> 02)
> Subsystem: Promise Technology, Inc.: Unknown device 4d33
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32
> Interrupt: pin A routed to IRQ 18
> Region 0: I/O ports at ac00 [size=8]
> Region 1: I/O ports at b000 [size=4]
> Region 2: I/O ports at b400 [size=8]
> Region 3: I/O ports at b800 [size=4]
> Region 4: I/O ports at bc00 [size=64]
> Region 5: Memory at dd100000 (32-bit, non-prefetchable) [size=128K]
> Expansion ROM at <unassigned> [disabled] [size=64K]
> Capabilities: [58] Power Management version 1
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:0d.0 FireWire (IEEE 1394): Texas Instruments: Unknown device 8020
> (prog-if 10 [OHCI])
> Subsystem: Texas Instruments: Unknown device 8020
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32 (750ns min, 1000ns max), cache line size 08
> Interrupt: pin A routed to IRQ 19
> Region 0: Memory at dd125000 (32-bit, non-prefetchable) [size=2K]
> Region 1: Memory at dd120000 (32-bit, non-prefetchable) [size=16K]
> Capabilities: [44] Power Management version 1
> Flags: PMEClk- DSI- D1- D2+ AuxCurrent=0mA
> PME(D0-,D1-,D2+,D3hot+,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:0e.0 Ethernet controller: Intel Corp. 82557 [Ethernet Pro 100] (rev 08)
> Subsystem: Intel Corp. EtherExpress PRO/100+ Management Adapter
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32 (2000ns min, 14000ns max), cache line size 08
> Interrupt: pin A routed to IRQ 16
> Region 0: Memory at dd124000 (32-bit, non-prefetchable) [size=4K]
> Region 1: I/O ports at c000 [size=64]
> Region 2: Memory at dd000000 (32-bit, non-prefetchable) [size=1M]
> Expansion ROM at <unassigned> [disabled] [size=1M]
> Capabilities: [dc] Power Management version 2
> Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
> PME(D0+,D1+,D2+,D3hot+,D3cold+)
> Status: D0 PME-Enable- DSel=0 DScale=2 PME-
>
> 01:00.0 VGA compatible controller: S3 Inc. 86c368 [Trio 3D/2X] (rev 02)
> (prog-if 00 [VGA])
> Subsystem: S3 Inc. Trio3D/2X
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32 (1000ns min, 63750ns max)
> Region 0: Memory at d4000000 (32-bit, non-prefetchable) [size=64M]
> Expansion ROM at <unassigned> [disabled] [size=64K]
> Capabilities: [dc] Power Management version 1
> Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [80] AGP version 1.0
> Status: RQ=31 SBA- 64bit- FW- Rate=x1,x2
> Command: RQ=0 SBA- AGP- 64bit- FW- Rate=x2
>
>
>
>
> > Well be more specific on the hardware.
> > Remember Promise came in and started dorking the driver.
> > Next they will not admit to an asic bug even thought I have called them on
> > the existance. 2.5 can not fix it, it will only blow up in 2.5. Hell it
> > is possiblely blowing up in 2.4 but less likely.
> >
> > So spell out the hardware in question.
> >
> > The new chip hardware lost its interrupt parse because promise took it out
> > of the pci space and it made the driver less stable because the hardware
> > is less stable.
> >
> > On Tue, 11 Jun 2002, Nick Evgeniev wrote:
> >
> > > Hi,
> > >
> > > > > I added it to the collection of IDE oddities I'm looking at. There
> are
> > > > > also some promise requested changes due to get merged at the end of
> this
> > > > > week. Then we can see where we stand
> > > >
> > > > Also, it is hard to answer email without connectivity in the air.
> > >
> > > Agreed. But all what I see is that STABLE Linux kernel DOESN'T has
> working
> > > driver for promise controller (including latest ac patches) for SEVERAL
> > > MONTHS.
> > > And as for now there is no any progress in fixing it. I don't blame on
> you,
> > > or Alan,
> > > or whoever else. All I have to suggest is to drop promise support in
> stable
> > > kernel,
> > > then rewrite/fix it in 2.5 tree... and then backport it to 2.4.
> > >
> > > I don't want to make experiments in production environment anymore...
> And
> > > it's
> > > unfair to the rest of Linux users to keep broken drivers in stable
> kernel...
> > > Because
> > > nobody expects that stable kernel will rip your fs _daily_.
> > >
> > >
> > >
> >
> > Andre Hedrick
> > LAD Storage Consulting Group
> >
> >
>

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