ALI 15X3 DMA Freeze

[Linux Kernel Mailing List <kernel@iggy.triode.net.au>]

I'm using kernel 2.4.18-pre9, which has a problem when I switch DMA on 
the IDE hard drive. With DMA enabled, I cannot complete a kernel
compile without the machine locking up. The motherboard is an
ASUS board, with 512MB of DDR RAM and an Athlon 1800 XP. If I
turn the ide DMA off, then I can compile as many linux kernels
as I like with no lockup. This DMA lockup also occurs on other
2.4.x kernels. Is anyone interested in getting me to test a
fix for this problem?

Feb 10 10:44:35 solaris kernel: PCI: Using IRQ router ALI [10b9/1533] at 00:07.0
Feb 10 10:44:35 solaris kernel: ALI15X3: IDE controller on PCI bus 00 dev 20
Feb 10 10:44:35 solaris kernel: ALI15X3: chipset revision 196
Feb 10 10:44:35 solaris kernel: ALI15X3: not 100%% native mode: will probe irqs later
Feb 10 10:44:35 solaris kernel: ALI15X3: ATA-66/100 forced bit set (WARNING)!!


with dma off  hdparm -Tt /dev/hda gives:

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.56 seconds =228.57 MB/sec
 Timing buffered disk reads:  64 MB in 14.85 seconds =  4.31 MB/sec


with dma off  hdparm -Tt /dev/hda gives:

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.49 seconds =261.22 MB/sec
 Timing buffered disk reads:  64 MB in  1.70 seconds = 37.65 MB/sec


Cheers.  Paul