From: "\"David Müller (ELSOFT AG)\"" <d.mueller@elsoft.ch>
To: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: ISA dma on 4xx
Date: Thu, 05 Dec 2002 09:17:05 +0100 [thread overview]
Message-ID: <3DEF0B81.8060106@elsoft.ch> (raw)
In-Reply-To: <15854.51654.206530.977151@argo.ozlabs.ibm.com>
Hello
Paul Mackerras wrote:
> Is anyone using a pc-style southbridge chip in a 4xx-based system?
>
> I am thinking that the split that we currently have in linuxppc-2.5,
> where asm/dma.h includes either ppc4xx_dma.h or ppc_isa_dma.h, is not
> the best way to do things, because we might want to use the ISA dma
> functions on a 4xx system.
Yes, we are using ISA DMA in combination with a PPC405GP. Currently
ISA DMA is used for things like floppy or IrDA (implemented in a SuperIO
chip).
>
> Does anyone use the 4xx dma controller with some device that is
> normally connected to an ISA bus? That is, is there a need for the
> 4xx dma functions to provide the same interface as the ISA dma
> functions?
>
> Paul.
>
Am i right that you want to create a common interface capable of
handling 4xx DMA and ISA DMA at the same time?
Dave
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2002-12-05 8:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-05 3:36 ISA dma on 4xx Paul Mackerras
2002-12-05 8:17 ` "David Müller (ELSOFT AG)" [this message]
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