Re: Can't get DVD to use DMA


Subject: Re: Can't get DVD to use DMA
From: Justin Dieters (enderak@gci.net)
Date: Wed Oct 15 2003 - 00:14:47 AKDT


I think the mdma0 got turned on after I forced it using "hdparm -X32
/dev/hdd", but even after that, it still was saying using_dma is off.
Here is what hdparm says now, after a fresh reboot:

[root@jane hold]# /sbin/hdparm /dev/hdd

/dev/hdd:
  HDIO_GET_MULTCOUNT failed: Invalid argument
  I/O support = 1 (32-bit)
  unmaskirq = 1 (on)
  using_dma = 0 (off)
  keepsettings = 0 (off)
  HDIO_GET_NOWERR failed: Invalid argument
  readonly = 1 (on)
  readahead = 8 (on)
  HDIO_GETGEO failed: Invalid argument
  busstate = 1 (on)
[root@jane hold]# /sbin/hdparm -i /dev/hdd

/dev/hdd:

  Model=JLMS XJ-HD163D, FwRev=GHR8, SerialNo=
  Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
  RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
  BuffType=unknown, BuffSize=0kB, MaxMultSect=0
  (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
  IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
  PIO modes: pio0 pio1 pio2 pio3 pio4
  DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2
  AdvancedPM=no

[root@jane hold]# /sbin/hdparm -d1 /dev/hdd

/dev/hdd:
  setting using_dma to 1 (on)
  HDIO_SET_DMA failed: Operation not permitted
  using_dma = 0 (off)

Justin

bryan@ak.net wrote:
> The bootup messages reported the DVD as using DMA, and above, the drive
> is reporing using mdma0. So, are you wondering how to set it to a
> higher DMA mode?

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This archive was generated by hypermail 2a23 : Wed Oct 15 2003 - 00:18:53 AKDT