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    Subject2.6.4 under heavy ioload disables sis5513 DMA
    Happens every few hours with heavy io and cpu load:

    hda: dma_timer_expiry: dma status == 0x21
    hda: DMA timeout error
    hda: dma timeout error: status=0xd0 { Busy }

    hda: DMA disabled
    ide0: reset: success

    DMA auto-reenabled by boot time hdparm -k

    lspci -vv

    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-

    hdparm -iI


    Model=IC35L090AVV207-0, FwRev=V23OA63A, SerialNo=VNVC00G3CABSMD
    Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
    RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
    BuffType=DualPortCache, BuffSize=1821kB, MaxMultSect=16, MultSect=16
    CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=160836480
    IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
    PIO modes: pio0 pio1 pio2 pio3 pio4
    DMA modes: mdma0 mdma1 mdma2
    UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
    AdvancedPM=yes: disabled (255) WriteCache=enabled
    Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a: 2 3 4 5 6

    ATA device, with non-removable media
    powers-up in standby; SET FEATURES subcmd spins-up.
    Model Number: IC35L090AVV207-0
    Serial Number: VNVC00G3CABSMD
    Firmware Revision: V23OA63A
    Used: ATA/ATAPI-6 T13 1410D revision 3a
    Supported: 6 5 4 3
    Logical max current
    cylinders 16383 65535
    heads 16 1
    sectors/track 63 63
    CHS current addressable sectors: 4128705
    LBA user addressable sectors: 160836480
    LBA48 user addressable sectors: 160836480
    device size with M = 1024*1024: 78533 MBytes
    device size with M = 1000*1000: 82348 MBytes (82 GB)
    LBA, IORDY(can be disabled)
    bytes avail on r/w long: 52 Queue depth: 32
    Standby timer values: spec'd by Standard, no device specific minimum
    R/W multiple sector transfer: Max = 16 Current = 16
    Advanced power management level: unknown setting (0x0000)
    Recommended acoustic management value: 128, current value: 254
    DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
    Cycle time: min=120ns recommended=120ns
    PIO: pio0 pio1 pio2 pio3 pio4
    Cycle time: no flow control=240ns IORDY flow control=120ns
    Enabled Supported:
    * NOP cmd
    * READ BUFFER cmd
    * WRITE BUFFER cmd
    * Host Protected Area feature set
    Release interrupt
    * Look-ahead
    * Write cache
    * Power Management feature set
    Security Mode feature set
    * SMART feature set
    * FLUSH CACHE EXT command
    * Mandatory FLUSH CACHE command
    * Device Configuration Overlay feature set
    * 48-bit Address feature set
    Automatic Acoustic Management feature set
    SET MAX security extension
    Address Offset Reserved Area Boot
    SET FEATURES subcommand required to spinup after power up
    Power-Up In Standby feature set
    Advanced Power Management feature set
    * General Purpose Logging feature set
    * SMART self-test
    * SMART error logging
    Master password revision code = 65534
    not enabled
    not locked
    not frozen
    not expired: security count
    not supported: enhanced erase
    46min for SECURITY ERASE UNIT.
    HW reset results:
    CBLID- above Vih
    Device num = 0 determined by the jumper
    Checksum: correct

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      Last update: 2005-03-22 14:01    [W:0.026 / U:10.420 seconds]
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