Ira,
we have a pretty old PCI device driver here that needs some basic rework
running on 2.6.27 on several MPC83xx.
It's a simple char-device with "give me some data" implemented using
read() resulting in zero-copy DMA to user mem.
There's get_user_pages() working under the hood along with
SetPageDirty() and page_cache_release().
Main goal is to prepare a sg-list that gets fed into a DMA controller.
I wonder if there's a more up-to-date/efficient and future proof scheme
of creating the mapping.
Could you provide some pointers or would you stick to the current scheme ?
Regards,
André
MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler
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