From: romit dasgupta <romit@myrealbox.com>
To: linux-kernel@vger.kernel.org
Subject: [OT] DMA access from a non-bus master PCI device?
Date: Thu, 05 Feb 2004 10:34:31 +0530 [thread overview]
Message-ID: <4021CEDF.3030705@myrealbox.com> (raw)
Hello,
I have a PCI device that cannot be a PCI bus master (only a
PCI target). For some reason it has a DMA controller. Since it can't be
a bus master I can't initiate DMA transfers from this PCI device to
system RAM.
My question is, can we use the motherboard's DMA controller to perform
this transfer? In some of the documents that I got in the web
(http://www.pcguide.com/ref/mbsys/res/dma/func.htm), it is mentioned
that the 8237 DMA controller that comes with standard motherboard
chipsets, can only be used for DMA transfers over the ISA bus.
Any comments are welcome.
Regards,
-Romit
reply other threads:[~2004-02-05 5:04 UTC|newest]
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