Subject: Re: BUS_DMA_CONTROLDATA flag for bus_dma(9)
To: None <Richard.Earnshaw@buzzard.freeserve.co.uk>
From: Jason Thorpe <thorpej@wasabisystems.com>
List: tech-kern
Date: 08/15/2003 15:55:20
On Friday, August 15, 2003, at 03:36 PM, Richard Earnshaw wrote:
> Which implies that coherrency is impossible if bounce buffers are
> needed.
...except that COHERENT still requires bus_dmamap_sync() for correct
operation. I still think it's possible for it to work with bounce
buffers.
-- Jason R. Thorpe <thorpej@wasabisystems.com>