On Wed, Oct 10, 2001 at 05:13:40PM -0400, [EMAIL PROTECTED] wrote:
> So, can anyone answer any of the questions below, or do I have to write
> drm for multimedia ?
The DRM is an architecture for accessing hardware directly.
What functions are implemented in any given kernel module is driven by
the requirements of the applications running on top of it. That's
typically OpenGL at that point.
So, most of the drivers are not going to have a function call to support
your arbitrary DMA.
You don't need to write a "drm for multimedia" you need to add the hooks
you require into the exsting kernel modules for various graphics
cards. When do you do this, be careful to consider the security
implications. Make sure it can't be used to read or write things that it
shouldn't. Also make sure it cooperates with the existing driver in the
way it uses memory on the card, the state it leaves the card in after
its operations, etc.
- |Daryll
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