Re: [UPDATE] 2.4.10-pre2 PCI64, API changes README

[David S. Miller]

   From: Alan Cox <[e-mail]>
   Date: Fri, 31 Aug 2001 00:30:34 +0100 (BST)

   That isnt done anyway - the card executes a risc instruction set for the
   DMA engine specifying which to skip and draw. So you feed it a base
   physical address for the fb via ioctl (yes this needs to be a pci device
   bar and offset I suspect) and then tell it about the fb layout and the like

We could do something interesting with /proc/bus/pci/bus/devfn nodes
I suspect.

You open the target fb pci dev, and part of the argument to the video
ioctl is:

	int pci_dev_fd;
	int resource_num;
	u64 offset;
	u64 len;

Something like that.

Later,
David S. Miller
[e-mail]