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no UDMA on Inspiron 600M

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  • gogu2k3
    Hello, I just bought an Inspiron 600M (Bios A05) and installed RH9.0 on it. The kernel is the default 2.4.20-8. When I do `hdparm -d1 /dev/hda`, I get:
    Message 1 of 1 , Sep 30, 2003
      Hello,

      I just bought an Inspiron 600M (Bios A05) and installed RH9.0 on it.
      The kernel is the default 2.4.20-8.

      When I do `hdparm -d1 /dev/hda`, I get:
      HDIO_SET_DMA failed: Operation not permitted
      using_dma = 0 (off)

      Because of this, `hdparm -t /dev/hda` gives only 2.9MB/sec, or at most
      4.7MB/sec if I'm using the -c3 flag. Completely inadequate.

      `hdparm -i /dev/hda` reports:

      /dev/hda:

      Model=FUJITSU MHT2030AT, FwRev=009B, SerialNo=NN15T3816WG2
      Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
      RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
      BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
      CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=58605120
      IORDY=yes, 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: mode=0x80 (128) WriteCache=enabled
      Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a: 2 3 4 5 6

      When I do `lspci -v`, the section regarding the IDE interface says:
      00:1f.1 IDE interface: Intel Corp.: Unknown device 24ca (rev 01)
      (prog-if 8a [Master SecP PriP])
      Subsystem: Intel Corp.: Unknown device 4541
      Flags: bus master, medium devsel, latency 0, IRQ 11
      I/O ports at <ignored>
      I/O ports at <ignored>
      I/O ports at <ignored>
      I/O ports at <ignored>
      I/O ports at bfa0 [size=16]
      Memory at 18000000 (32-bit, non-prefetchable) [disabled]
      [size=1K]

      What can I do to enable UDMA on this controller (I don't think the
      problem has anything to do with the harddisk)?

      Thank you,

      Serban
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