vga_isa.c revision 1.13 
1/* $NetBSD: vga_isa.c,v 1.13 2002/09/27 20:38:53 thorpej Exp $ */
2
3/*
4 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30#include <sys/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: vga_isa.c,v 1.13 2002/09/27 20:38:53 thorpej Exp $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/device.h>
37#include <sys/malloc.h>
38
39#include <dev/isa/isavar.h>
40
41#include <dev/ic/mc6845reg.h>
42#include <dev/ic/pcdisplayvar.h>
43#include <dev/ic/vgareg.h>
44#include <dev/ic/vgavar.h>
45#include <dev/isa/vga_isavar.h>
46
47#include <dev/wscons/wsconsio.h>
48#include <dev/wscons/wsdisplayvar.h>
49
50int	vga_isa_match(struct device *, struct cfdata *, void *);
51void	vga_isa_attach(struct device *, struct device *, void *);
52
53const struct cfattach vga_isa_ca = {
54	sizeof(struct vga_softc), vga_isa_match, vga_isa_attach,
55};
56
57int
58vga_isa_match(struct device *parent, struct cfdata *match, void *aux)
59{
60	struct isa_attach_args *ia = aux;
61
62	if (ISA_DIRECT_CONFIG(ia))
63		return (0);
64
65	/* If values are hardwired to something that they can't be, punt. */
66	if (ia->ia_nio < 1 ||
67	    (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT &&
68	     ia->ia_io[0].ir_addr != 0x3b0))
69		return (0);
70
71	if (ia->ia_niomem < 1 ||
72	    (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT &&
73	     ia->ia_iomem[0].ir_addr != 0xa0000))
74		return (0);
75	if (ia->ia_iomem[0].ir_size != 0 &&
76	    ia->ia_iomem[0].ir_size != 0x20000)
77		return (0);
78
79	if (ia->ia_nirq > 0 &&
80	    ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT)
81		return (0);
82
83	if (ia->ia_ndrq > 0 &&
84	    ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT)
85		return (0);
86
87	if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) &&
88	    !vga_common_probe(ia->ia_iot, ia->ia_memt))
89		return (0);
90
91	ia->ia_nio = 1;
92	ia->ia_io[0].ir_addr = 0x3b0;	/* XXX mono 0x3b0 color 0x3c0 */
93	ia->ia_io[0].ir_size = 0x30;	/* XXX 0x20 */
94
95	ia->ia_niomem = 1;
96	ia->ia_iomem[0].ir_addr = 0xa0000;
97	ia->ia_iomem[0].ir_size = 0x20000;
98
99	ia->ia_nirq = 0;
100	ia->ia_ndrq = 0;
101
102	return (2);	/* more than generic pcdisplay */
103}
104
105void
106vga_isa_attach(struct device *parent, struct device *self, void *aux)
107{
108	struct vga_softc *sc = (void *) self;
109	struct isa_attach_args *ia = aux;
110
111	printf("\n");
112
113	vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA,
114	    0, NULL);
115}
116
117int
118vga_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
119{
120
121	return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
122}
123