Re: newbus ioport usage

From: Nate Lawson (nate_at_root.org)
Date: 01/27/04

  • Next message: M. Warner Losh: "Re: newbus ioport usage" 
    Date: Mon, 26 Jan 2004 17:23:46 -0800 (PST)
To: "M. Warner Losh" <imp@bsdimp.com>

    On Mon, 26 Jan 2004, M. Warner Losh wrote:
    > In message: <20040126165523.W30461@root.org>
    > Nate Lawson <nate@root.org> writes:
    > : Ok, I'm doing the set/alloc and it works. However, one weird thing. If I
    > : allocate all ports at boot time, it succeeds. My driver goes through
    > : multiple release/allocate cycles and it all works as expected. However if
    > : I boot and attach to only one of the registers, subsequent attempts to
    > : attach the second one fail. The resources are 2 IO ports, 0x101c and
    > : 0x101d. Both are 1 byte.
    >
    > Deos devinfo -r show any cause for the problem? Maybe you aren't
    > releasing them properly? Also, why not allocate them as a block of 2?

    I'll look into that. I can't allocate them in one block as they come and
    go, based on system state. In one state, one is available and in another,
    both are available. If I boot while only one is available and then you
    plug in the AC adapter, new ones appear. This is acpi, btw.

    -Nate
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  • Next message: M. Warner Losh: "Re: newbus ioport usage"

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