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Re: [ppopov@mvista.com: Re: [Linux-mips-kernel]ioremap & ISA]

To: Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: [ppopov@mvista.com: Re: [Linux-mips-kernel]ioremap & ISA]
From: Ralf Baechle <ralf@oss.sgi.com>
Date: Wed, 19 Dec 2001 14:47:47 -0200
Cc: Jun Sun <jsun@mvista.com>, Jim Paris <jim@jtan.com>, Linux/MIPS Development <linux-mips@oss.sgi.com>
In-reply-to: <Pine.GSO.4.21.0112191031270.28694-100000@vervain.sonytel.be>; from geert@linux-m68k.org on Wed, Dec 19, 2001 at 10:34:37AM +0100
References: <3C1F9608.E4E32E18@mvista.com> <Pine.GSO.4.21.0112191031270.28694-100000@vervain.sonytel.be>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.2.5i
On Wed, Dec 19, 2001 at 10:34:37AM +0100, Geert Uytterhoeven wrote:

> > >         set_io_port_base(0xb4000000);
> > >         isa_slot_offset = 0xb0000000;
> > 
> > I see.  So isa_slot_offset is for isa_read/isa_write, although I still don't
> > see what kind of drivers would use isa_read/isa_write.
> 
> E.g. VGA and ISA NVRAM.

Correct.  And much much more, the whole PC insanity.  There are plenty of
MIPS systems that are essentially PCs with a MIPS CPU glued on so you get
all the fun, ISA, EISA, VLB etc.  Barf bag technology.

  Ralf

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