On Tue, Jun 20, 2000 at 07:28:00AM -0700, David S. Miller wrote:
> It would almost make more sense to have bus based mmap routines, and
> this can handle also all the issues of 32-bit X server on 64-bit
> kernel (more common than you think) et al. Let's use PCI as an
> example, you could say something like:
>
> struct pci_dev_specifier {
> int bus, dev, fn;
> } pdev;
>
> fd = open("/dev/pci");
> if (fd < 0) {
> perror("open");
> exit(1);
> }
> bus = whatever;
> dev = whatever;
> fn = whatever;
> err = ioctl(fd, PCI_DEV_SPECIFY, &pdev);
Have you looked at the pciconfig_iobase syscall I added for Alpha?
That plus /dev/mem gets what you're proposing here.
r~
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