On Fri, 2002-12-13 at 19:15, Jason Howard wrote:
> Hello All,
>
> I am wondering if the functionality exists in the Linux kernel to DMA
> from a SCSI controller directly into frame buffer memory of a PCI video
> card? Is there a standard method for this (similar to sendfile) or will
> it require some hacking?
In theory you can mmap the frame buffer memory, then do O_DIRECT I/O
into it. In practice it will buffer (I hope it still does). One of the
problems is that there are huge lists of PCI->AGP DMA errata in
chipsets.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:30 EST