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From: Harish K Harshan <harish@arl.amrita.edu>
To: linux-kernel@vger.kernel.org
Subject: DMA Transfer problem
Date: Tue, 24 Jan 2006 10:30:35 +0530	[thread overview]
Message-ID: <43D5B473.3060006@arl.amrita.edu> (raw)

Hello,

   Im having problems with DMA transfer on Linux, for an ADC card. The 
card is AxiomTek AX5621H, and can use DMA channels 1 and 3. I tried both 
the channels, but the DMA transfers are irregular (i.e.) at different 
speeds (which of course is not acceptable, since that application is 
time critical). The device driver (which I wrote) seems to work fine for 
all the other systems I tried it on. But this problem occurs only on one 
particular model of computer (Chino-Laxsons Pentium-4 boards). I tried 
another system with the same configuration, but the same resulted. After 
some time of execution, I get the kernel panic screen, which says the 
CPU context is corrupt. Please help me with this problem, as I need to 
get this driver working somehow on the P4 systems. I tried the Redhat-9 
kernel (2.4.20-8) and the debian kernel too (2.2.20).... gave the same 
results.

Thanks in advance,
Harish.

             reply	other threads:[~2006-01-24  4:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-24  5:00 Harish K Harshan [this message]
2006-01-24 12:59 ` DMA Transfer problem James Courtier-Dutton
2006-01-24 13:20   ` Harish K Harshan
2006-01-24 13:22     ` James Courtier-Dutton
2006-01-30 16:37     ` Martin Drab
2006-01-30 17:06       ` linux-os (Dick Johnson)
  -- strict thread matches above, loose matches on Subject: below --
2006-01-24  5:15 DMA Transfer Problem Harish K Harshan
2006-01-24 17:04 ` Bjorn Helgaas

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