Date: Thu, 13 Mar 1997 11:21:53 -0600 From: "Eric L. Hernes" <erich@lodgenet.com> To: Emmanuel.Duros@sophia.inria.fr Cc: freebsd-hackers@FreeBSD.ORG, pplc@chouette.inria.fr Subject: Re: Pb using DMA - Physical addressing Message-ID: <199703131721.LAA29833@jake.lodgenet.com> In-Reply-To: Your message of "Thu, 13 Mar 1997 09:58:29 %2B0100." <199703130858.JAA08587@chouette.inria.fr>
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Emmanuel Duros writes:
>>
>>isa_dma{_acquire,_release,start,done} are your friends,
>>have a look at sys/i386/isa/isa.c
>
>However I had to add another function in sys/i386/isa/isa.c which I
>called isa_dmastart_blk() in order to support the block transfer
>mode. Could this feature be added to future FreeBSD releases ?
>(isa_dmastart() only support single and autoinitialize transfer mode)
I haven't looked too closely, but is it possible to add it to the
flags argument? I'd prefer that to another funciton.
Something like `isa_dmastart(B_WRITE|DMA_BLOCK, .....);', maybe?
>
>Emmanuel
>
eric.
--
erich@lodgenet.com
http://rrnet.com/~erich erich@rrnet.com
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