Annotation of sys/dev/isa/vga_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: vga_isa.c,v 1.8 2002/03/14 01:26:56 millert Exp $ */
2: /* $NetBSD: vga_isa.c,v 1.3 1998/06/12 18:45:48 drochner Exp $ */
3:
4: /*
5: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Chris G. Demetriou
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: #include <sys/param.h>
32: #include <sys/systm.h>
33: #include <sys/kernel.h>
34: #include <sys/device.h>
35: #include <sys/malloc.h>
36:
37: #include <dev/isa/isavar.h>
38:
39: #include <dev/ic/mc6845reg.h>
40: #include <dev/ic/pcdisplayvar.h>
41: #include <dev/ic/vgareg.h>
42: #include <dev/ic/vgavar.h>
43: #include <dev/isa/vga_isavar.h>
44:
45: #include <dev/wscons/wsconsio.h>
46: #include <dev/wscons/wsdisplayvar.h>
47:
48: struct vga_isa_softc {
49: struct device sc_dev;
50: #if 0
51: struct vga_config *sc_vc; /* VGA configuration */
52: #endif
53: };
54:
55: int vga_isa_match(struct device *, void *, void *);
56: void vga_isa_attach(struct device *, struct device *, void *);
57:
58: struct cfattach vga_isa_ca = {
59: sizeof(struct vga_isa_softc), vga_isa_match, vga_isa_attach,
60: };
61:
62: int
63: vga_isa_match(parent, match, aux)
64: struct device *parent;
65: void *match;
66: void *aux;
67: {
68: struct isa_attach_args *ia = aux;
69:
70: /* If values are hardwired to something that they can't be, punt. */
71: if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != 0x3b0) ||
72: /* ia->ia_iosize != 0 || XXX isa.c */
73: (ia->ia_maddr != MADDRUNK && ia->ia_maddr != 0xa0000) ||
74: (ia->ia_msize != 0 && ia->ia_msize != 0x20000) ||
75: ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
76: return (0);
77:
78: if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) &&
79: !vga_common_probe(ia->ia_iot, ia->ia_memt))
80: return (0);
81:
82: ia->ia_iobase = 0x3b0; /* XXX mono 0x3b0 color 0x3c0 */
83: ia->ia_iosize = 0x30; /* XXX 0x20 */
84: ia->ia_maddr = 0xa0000;
85: ia->ia_msize = 0x20000;
86: return (2); /* more than generic pcdisplay */
87: }
88:
89: void
90: vga_isa_attach(parent, self, aux)
91: struct device *parent, *self;
92: void *aux;
93: {
94: struct isa_attach_args *ia = aux;
95: #if 0
96: struct vga_isa_softc *sc = (struct vga_isa_softc *)self;
97: #endif
98:
99: printf("\n");
100:
101: vga_common_attach(self, ia->ia_iot, ia->ia_memt,
102: WSDISPLAY_TYPE_ISAVGA);
103: }
104:
105: int
106: vga_isa_cnattach(iot, memt)
107: bus_space_tag_t iot, memt;
108: {
109: return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
110: }
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