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/* $NetBSD: vga_isa.c,v 1.4 1996/12/05 01:39:32 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/autoconf.h>
#include <machine/pte.h>
#include <dev/isa/isavar.h>
#include <alpha/dev/vgavar.h>
#include <alpha/isa/vga_isavar.h>
struct vga_isa_softc {
struct device sc_dev;
struct vga_config *sc_vc; /* VGA configuration */
};
#ifdef __BROKEN_INDIRECT_CONFIG
int vga_isa_match __P((struct device *, void *, void *));
#else
int vga_isa_match __P((struct device *, struct cfdata *, void *));
#endif
void vga_isa_attach __P((struct device *, struct device *, void *));
struct cfattach vga_isa_ca = {
sizeof(struct vga_isa_softc), vga_isa_match, vga_isa_attach,
};
int vga_isa_console_tag; /* really just a boolean. */
struct vga_config vga_isa_console_vc;
int
vga_isa_match(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct isa_attach_args *ia = aux;
int rv;
/* If values are hardwired to something that they can't be, punt. */
if (ia->ia_iobase != IOBASEUNK || /* ia->ia_iosize != 0 || XXX isa.c */
(ia->ia_maddr != MADDRUNK && ia->ia_maddr != 0xb8000) ||
(ia->ia_msize != 0 && ia->ia_msize != 0x8000) ||
ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
return (0);
if (vga_isa_console_tag)
return (1);
rv = vga_common_probe(ia->ia_iot, ia->ia_memt);
if (rv) {
ia->ia_iobase = 0x3b0;
ia->ia_iosize = 0x30;
ia->ia_maddr = 0xb8000;
ia->ia_msize = 0x8000;
}
return (rv);
}
void
vga_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct isa_attach_args *ia = aux;
struct vga_isa_softc *sc = (struct vga_isa_softc *)self;
struct vga_config *vc;
int console;
console = vga_isa_console_tag;
if (console)
vc = sc->sc_vc = &vga_isa_console_vc;
else {
vc = sc->sc_vc = (struct vga_config *)
malloc(sizeof(struct vga_config), M_DEVBUF, M_WAITOK);
/* set up bus-independent VGA configuration */
vga_common_setup(ia->ia_iot, ia->ia_memt, vc);
}
printf("\n");
vga_wscons_attach(self, vc, console);
}
int
vga_isa_console_match(iot, memt)
bus_space_tag_t iot, memt;
{
return (vga_common_probe(iot, memt));
}
void
vga_isa_console_attach(iot, memt)
bus_space_tag_t iot, memt;
{
struct vga_config *vc = &vga_isa_console_vc;
/* for later recognition */
vga_isa_console_tag = 1;
/* set up bus-independent VGA configuration */
vga_common_setup(iot, memt, vc);
vga_wscons_console(vc);
}
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