[Prev][Next][Index][Thread]

DMA prob..





  Hi,


  I've had this for a long time, and I don't seem to be able to find any
suitable fix for it. The machine is a Pentium-133 , on a shuttle HX
boards, 64MB ram, ATI mach 64+2mb video card, and 2xQuantum Fireball 1.3GB
disks. Each disk is on a different controller, and on the scondary
controller, there is also a CD-ROM, Sony x4 (lame), as slave.

This is how my dmesg looks:

ide: i82371 PIIX (Triton) on PCI bus 0 function 57
    ide0: BM-DMA at 0x9000-0x9007
    ide1: BM-DMA at 0x9008-0x900f
hda: QUANTUM FIREBALL1280A, 1222MB w/83kB Cache, LBA, CHS=621/64/63, DMA
hdc: QUANTUM FIREBALL1280A, 1222MB w/83kB Cache, LBA, CHS=2484/16/63, DMA
hdd: CD-ROM CDU76E, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
Floppy drive(s): fd0 is 1.44M
Started kswapd v 1.4.2.2 
FDC 0 is a post-1991 82077
PPP: version 2.2.0 (dynamic channel allocation)
TCP compression code copyright 1989 Regents of the University of
California
PPP Dynamic channel allocation code copyright 1995 Caldera, Inc.
PPP line discipline registered.
NET3 PLIP version 2.2 gniibe@mri.co.jp
plip1: Parallel port at 0x378, using assigned IRQ 7.
ne.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)
NE*000 ethercard probe at 0x300: 00 00 e8 cb 03 40
eth0: NE2000 found at 0x300, using IRQ 10.
Partition check:
 hda: hda1 hda2 hda3 hda4 < hda5 hda6 >
 hdc:hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hdc: disabled DMA
ide1: reset: success
 hdc1 hdc2 hdc3 hdc4


  The problem, as you can see, is that for some reason, my secondary
interface gives some kind of irq timeout, and thus the ide driver disables
DMA for this interface, leaving me with /dev/hda using DMA, and /dec/hdc
& /dev/hdd not using DMA. Since Quantum FIREBALL's DMA transfers(mword2)
are one of it's best qualities, I wonder if there is a solution to this
problem.

Regards,

--Ariel

   +---------------------------------------------------------+
   | Ariel Biener                                            |
   | e-mail: ariel@post.tau.ac.il        Work ph: 03-6406086 |
   +---------------------------------------------------------+


Follow-Ups: