From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 17 Oct 2000 15:45:36 +0200 (CEST) From: Geert Uytterhoeven To: Benjamin Herrenschmidt cc: paulus@linuxcare.com.au, Linux/PowerPC Devel List Subject: Re: dual head r128 In-Reply-To: <19340911041320.23766@192.168.1.2> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Tue, 17 Oct 2000, Benjamin Herrenschmidt wrote: > >Could someone fill me in on why we need legacy I/O to the AGP bus? > > Some display cards (like voodoo) AFAIK, need us to tweak with the VGA IO > registers. The interest in having something like ioportremap or similar > is that we can have the platform specific code return a different base > for VGA than other legacy devices, thus allowing us to have, for example, > such a VGA card in the AGP slot and a legacy serial card in the PCI slots. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do these exist? I'm aware of legacy serial cards for ISA slots only. AFAIK all PCI serial cards use PCI configuration and are handled separately by serial.c. 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/