Re: address translation

On Fri, 16 May 2003, Trevor Woerner wrote:

quoted

From a cursory look at the ide.c code, it appears the kernel wants to

access the ATA registers one byte at a time. Unfortunately, because my
device is wired directly, I have to access it 16 bits at a time. So it
looks like I'm going to have to hack the ide.c code (or something like
it) to combine adjacent registers together before reading/writing.

Which kernel are you using? In 2.4.21-rc2, you can easily override the
hwif->{IN,OUT}B() routines.

Is it just me, or did the hard drive controllers of the 68k era
(drivers/ide/legacy/macide.c) have memory-mapped registers? I was
looking at their code today and it seems similar to what I'm looking
for (i think).

Yes, on m68k all IDE interfaces are memory mapped (just like any other I/O).

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/