On Thu, 2002-09-19 at 16:03, Eric W. Biederman wrote:
> If I do an inb to a PCI-X device running at 133Mhz it should come back
> much faster than an inb from my serial port on the ISA port. What
> is the reason for the fixed minimum timing?
As far as I can tell the minimum time for the inb/outb is simply the
time it takes the bus to respond. The only difference there is that for
writel rather than outl you won't wait for the write to complete on the
PCI bus just dump it into the fifo if its empty
-
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 : Mon Sep 23 2002 - 22:00:26 EST