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    SubjectRe: [BUG?] SIS IDE DMA errors
    Date
    On Saturday 27 September 2003 01:53, Vojtech Pavlik wrote:
    > On Fri, Sep 26, 2003 at 07:27:35PM +0200, M?ns Rullg?rd wrote:
    > > Vojtech Pavlik <vojtech@suse.cz> writes:
    > >
    > > > Actually, it's me who wrote the 961 and 963 support. It works fine for
    > > > most people. Did you check you cabling?
    > >
    > > I'm dealing with a laptop, but I suppose I could wiggle the cables a
    > > bit. I still doubt it's a cable problem, since reading works
    > > flawlessly.
    >
    > Hmm, that's indeed interesting and it'd point to a driver problem -
    > when reading, the drive is dictating the timing, but when writing, it's
    > the controllers turn.
    >
    > So if the controller timing is not correctly programmed, reads function,
    > but writes don't.
    >
    > Can you send me the output of 'lspci -vvxxx' of the IDE device?
    > I'll take a look to see if it looks correct.


    00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (prog-if 80 [Master])
    Subsystem: Micro-Star International Co., Ltd.: Unknown device 5332
    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: 128
    Interrupt: pin ? routed to IRQ 10
    Region 4: I/O ports at 4000 [size=16]
    Capabilities: [58] 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: 39 10 13 55 05 00 10 02 00 80 01 01 00 80 00 00
    10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    20: 01 40 00 00 00 00 00 00 00 00 00 00 62 14 32 53
    30: 00 00 00 00 58 00 00 00 00 00 00 00 00 00 00 00
    40: 00 00 00 00 00 00 00 00 00 00 06 00 00 00 00 00
    50: f2 07 f2 07 ea 96 d5 d0 01 00 02 86 00 00 00 00
    60: ff aa ff aa 00 00 00 00 00 00 00 00 00 00 00 00
    70: 17 21 06 04 00 60 1c 1e 00 60 1c 1e 00 60 1c 1e
    80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


    >
    > > It appears to me that during heavy IO load, some DMA interrupts get
    > > lost, for some reason.
    >
    > Well, I've got this feeling that not just IDE interrupts get lost under
    > heavy IO load with recent kernels ...

    Timer interrupts too as clocks seem to run slow only
    on a number of machines.

    Regards
    Michael

    Regards
    Michael

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