Re: Solaris DDI/DMA example driver

From: William D. Waddington (william.waddington_at_beezmo.com)
Date: 04/17/04

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    Date: Sat, 17 Apr 2004 17:01:45 GMT

    On Sat, 17 Apr 2004 16:21:44 GMT, kilian@raceme.UUCP (Alan Kilian) wrote:

    >
    >Does anyone have an example driver that uses the DDI/DDK driver routines to do
    >DMA to a device on the PCI bus?
    >
    >I have DMA reads working, but I can't seem to get DMA writes working.
    >
    >I suspect something simple and a peek at another driver's xxxwrite() routine
    >may be the bit I need.
    >
    >Thanks,
    > -Alan

    You are welcome to take a look at mine. The x86 versions do DMA chaining,
    the SPARC versions don't. Take a look at the strategy() code. Unfortunately,
    there is a whole lot of code here that supports compatibility with earlier versions,
    so there may be too much to dig through. These are Sol 7 drivers that haven't
    been re-compiled for 8, 9 or 10 (and probably won't w/out some cleanup) but the
    binaries do run on 7, 8, 9 - and probably 10. They are for our DR11 and hardcopy
    PLX-9080 based boards.

    I don't know if Phil's generic base Pci driver includes DMA examples, but maybe
    another of his drivers does. They are sure to be easier to read than mine :)

    Waddington: http://www.tahomatech.com/downloads/drivers/solaris_7/pci/

    Philip Brown: http://www.bolthole.com/solaris/drivers/

    Good Luck,
    Bill

    --------------------------------------------
    William D Waddington
    Bainbridge Island, WA, USA
    william.waddington@beezmo.com
    --------------------------------------------
    "Even bugs...are unexpected signposts on
    the long road of creativity..." - Ken Burtch

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