On Mon, 9 Feb 2004, Kevin Hanson wrote:
> Scharf Yuval wrote:
>
> >Hello,
> >
> >In a computer with a disk capable of DMA.
> >
> >hdparm -i /dev/hda returns:
> >/dev/hda:
> >
> > Model=Maxtor 6E040L0, FwRev=NAR61590, SerialNo=E13CFB3E
> > Config={ Fixed }
> > RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
> > BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
> > CurCHS=17475/15/63, CurSects=16513875, LBA=yes, LBAsects=80293248
> > IORDY=on/off, tPIO={min:120,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 udma6
> > AdvancedPM=yes: disabled (255) WriteCache=enabled
> > Drive conforms to: (null):
> >
> > * signifies the current active mode
> >
> >
> >but hdparm /dev/hda returns:
> >
> >/dev/hda:
> > multcount = 0 (off)
> > IO_support = 0 (default 16-bit)
> > unmaskirq = 0 (off)
> > using_dma = 0 (off)
> > keepsettings =0 (off)
> > readonly = 0 (off)
> > readahead = 256 (on)
> > geometry = 65535/16/63, sectors = 80293248, start = 0
> >
> >
> >When I try turning the DMA on using hdparm -d1 /dev/hda I get:
> >
> >/dev/hda:
> > setting using_dma to 1 (on)
> > HDIO_SET_DMA failed: Operation not permitted
> > using_dma = 0 (off)
> >
> >I'm using Linux 2.6 and as much as I can see all the DMA options in the
> >kernel are turned on. Can someone tell me what is the problem?
> >
> >
> >Thanks,
> >Yuval Scharf
> >
> >
> >
> >--
> >[EMAIL PROTECTED] mailing list
> >
> >
> >
> >
> You probably didn't compile in the pci bus master dma support for the
> chipset your motherboard has into the kernel.If you just use generic
> pci bus-master dma support you usually get this problem.
>
> For example, I have an nforce2 chipset, so I compile in "AMD and NVIDIA
> IDE Support".Check for you chipset under the generic DMA bus-master
> support tree.
>
> Cheers,
> Kevin
>
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>
>
Thanks kevin, it worked.
But I still have two problems.
my /etc/conf.d/hdparm file includes the line:
all_args="-d1"
After rebooting my machine dmesg showed the following lines:
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
hda: DMA disabled
hdb had the DMA on and hda had DMA off but I had no problem turning it on
manually.
Do I have a problem in hdb? what should I do about it?
Why didn't hda start with DMA automatically?
Thanks,
Yuval Scharf
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