Re: [RFC] generic device DMA implementation

From: William Lee Irwin III (wli@holomorphy.com)
Date: Thu Dec 05 2002 - 06:16:47 EST


On Thu, Dec 05, 2002 at 12:15:30PM +0100, Benjamin Herrenschmidt wrote:
> Actually, the device model defines a bus "type" structure rather than a
> "bus instance" structure (well, at least it did last I looked a couple
> of weeks ago). That's a problem I beleive here, as those functions are
> really a property of a given bus instance. One solution would eventually
> be to have the set of functions pointers in the generic struct device
> and by default be copied from parent to child.

On an unrelated note, a "bus instance" structure would seem to be
required for proper handling of bridges in combination with PCI segments.

Bill
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