Re: [patch] Make UDMA66 work on VIA boards

[Erick Kinnee]

On Sat, Jul 01, 2000 at 09:11:30AM +0200, Vojtech Pavlik wrote:
> Hi!
> 
> I really wonder how this has happened - your drives are using UDMA0 and
> UDMA3 - 22.2 MB/sec and 44.4 MB/sec instead of 33 and 66. Not bad. Any
> chance your PCI clock isn't 33 MHz? That'd explain things.
> (Your CD drives are configured to PIO3 and PIO1.)
> 
> Could you supply your hdparm -i data as well?
> 
> Vojtech

Ok, the BIOS says 'CPU Host/PCI Bus 66/33'. I also have 'idebus=33' in
lilo.conf. So I know I've at least told the whole system we are all
going to do 33. :) Here is hdparm just after boot.

root@damaged:~#hdparm -i /dev/hda

/dev/hda:

 Model=Maxtor 90680D4, FwRev=PAS23B15, SerialNo=V4033M9A
 Config={ Fixed }
 RawCHS=13176/16/63, TrkSize=0, SectSize=0, ECCbytes=29
 BuffType=DualPortCache, BuffSize=256kB, MaxMultSect=16, MultSect=off
 CurCHS=13176/16/63, CurSects=13281408, LBA=yes, LBAsects=13281408
 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 udma0 udma1 *udma2
 Drive Supports : ATA/ATAPI-4 T13 1153D revision 17 : ATA-1 ATA-2 ATA-3 ATA-4
 Kernel Drive Geometry LogicalCHS=826/255/63 PhysicalCHS=13176/16/63

 root@damaged:~#hdparm -i /dev/hdb

 /dev/hdb:

 Model=Maxtor 90650U2, FwRev=MA540PR0, SerialNo=C2204Z3C
 Config={ Fixed }
 RawCHS=12495/16/63, TrkSize=0, SectSize=0, ECCbytes=57
 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
 CurCHS=12495/16/63, CurSects=12594960, LBA=yes, LBAsects=12594960
 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 udma0 udma1 udma2
 Drive Supports : ATA/ATAPI-4 T13 1153D revision 17 : ATA-1 ATA-2 ATA-3 ATA-4 ATA-5
 Kernel Drive Geometry LogicalCHS=784/255/63 PhysicalCHS=12495/16/63

 
I normally set both of them to 'hdparm -c1 -d1 -u1'. Need anything else?

Erick
		  

-- 
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