2.6.4 under heavy ioload disables sis5513 DMA

[Michael Frank]

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

/dev/hda:

 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
Standards:
        Used: ATA/ATAPI-6 T13 1410D revision 3a
        Supported: 6 5 4 3
Configuration:
        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)
Capabilities:
        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
Commands/features:
        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
           *    READ/WRITE DMA QUEUED
           *    General Purpose Logging feature set
           *    SMART self-test
           *    SMART error logging
Security:
        Master password revision code = 65534
                supported
        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

Regards
Michael
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