Re: linux 2.4.19-preX IDE bugs

["Nick Evgeniev" <nick@octet.com>]

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

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
>
>