I have a question regarding the DRI/DRM kernel modules: Is there a simple way for another XFree86 module to gain access to the DMA functions of a video card and transfer fairly large buffers to userspace from the on-card memory? The situation is this: ATI has a line of cards, the all-in-wonders, with on-board video capture. They capture directly the card's VRAM, and are shown using overlay. This part works fine with the new Xv drivers, using straight PIO modes. However, this breaks down when attempting to capture the video stream. The problem is bandwidth; on my main dev card I only get about 6 MB/s. The solution is to use the card's DMA mode, and this bumps into DRI's area. I've read the (google's cache) DRM documentation on PI's site (currently down) and drmDMA seems, to my first reading, for transfering data _to_ the card only. Is there any currently defined mechanism for reading data _from_ the card? Thanks for any help/suggestions, Robert Cicconetti _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/dri-devel
