Re: API change for bus_dma

From: Andrew Gallatin (gallatin_at_cs.duke.edu)
Date: 06/30/03

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    Date: Mon, 30 Jun 2003 09:59:36 -0400 (EDT)
To: "Justin T. Gibbs" <gibbs@scsiguy.com>

    Justin T. Gibbs writes:
    > > > As I understand it, it is possible to set the pycho bridge to use
    > > > a coherent address range, but FreeBSD doesn't take advantage of that
    > > > yet.
    > > >
    > >
    > > Yes, that's what solaris does..
    >
    > We added BUS_DMA_COHERENT to the API just before shipping 5.1. It
    > is only a "hint", so if you need to verify that the implementation
    > was able to give you coherent memory, we should add an API to allow
    > you to know. Of course, the Sparc bus dma implementation doesn't honor
    > the flag yet, but I'm sure that will change shortly.
    >

    Thanks Justin!

    Drew
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