Subject: Re: needs MI wdc changes to support macppc's wdc
To: Jason Thorpe <email@example.com>
From: Ignatios Souvatzis <firstname.lastname@example.org>
Date: 11/04/1998 10:30:37
On Tue, Nov 03, 1998 at 11:15:09AM -0800, Jason Thorpe wrote:
> On Wed, 4 Nov 1998 01:04:06 +0900 (JST)
> email@example.com (Izumi Tsutsui) wrote:
> > I think it is better to use offset array to access wdc register,
> > though it would make some overheads on archs which have only contiguous
> > addressed wdc (like i386).
> > Any suggestions?
> I don't think it will be much overhead. For multi-pio, the address will
> be computed only once. I think the reg map in the wdc driver is the right
> way to go.
Yes, but ports as the Amiga that need variable strides in bus_space anyway
will get the double overhead.