xref: /netbsd/sys/arch/shark/ofw/vga_ofbus.c (revision c4a72b64)
1 /* $NetBSD: vga_ofbus.c,v 1.4 2002/10/02 15:52:39 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/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/device.h>
34 #include <sys/malloc.h>
35 
36 #include <dev/isa/isavar.h>
37 
38 #include <dev/ic/mc6845reg.h>
39 #include <dev/ic/pcdisplayvar.h>
40 #include <dev/ic/vgareg.h>
41 #include <dev/ic/vgavar.h>
42 
43 #include <dev/wscons/wsconsio.h>
44 #include <dev/wscons/wsdisplayvar.h>
45 
46 #include <dev/ofw/openfirm.h>
47 #if 0
48 #include <dnard/ofw/vga_ofisavar.h>
49 #endif
50 
51 struct vga_ofbus_softc {
52 	struct vga_softc sc_vga;
53 
54 	int sc_phandle;
55 };
56 
57 int	vga_ofbus_match (struct device *, struct cfdata *, void *);
58 void	vga_ofbus_attach (struct device *, struct device *, void *);
59 
60 CFATTACH_DECL(vga_ofbus, sizeof(struct vga_ofbus_softc),
61     vga_ofbus_match, vga_ofbus_attach, NULL, NULL);
62 
63 static const char *compat_strings[] = { "pnpPNP,900", 0 };
64 
65 int
66 vga_ofbus_match(struct device *parent, struct cfdata *match, void *aux)
67 {
68 	struct ofbus_attach_args *oba = aux;
69 
70 	if (of_compatible(oba->oba_phandle, compat_strings) == -1)
71 		return (0);
72 
73 	if (!vga_is_console(&isa_io_bs_tag, WSDISPLAY_TYPE_ISAVGA) &&
74 	    !vga_common_probe(&isa_io_bs_tag, &isa_mem_bs_tag))
75 		return (0);
76 
77 	return (2);	/* more than generic pcdisplay */
78 }
79 
80 void
81 vga_ofbus_attach(struct device *parent, struct device *self, void *aux)
82 {
83 	struct vga_ofbus_softc *osc = (void *) self;
84 	struct vga_softc *sc = &osc->sc_vga;
85 	struct ofbus_attach_args *oba = aux;
86 
87 	printf("\n");
88 	osc->sc_phandle = oba->oba_phandle;
89 
90 	vga_common_attach(sc, &isa_io_bs_tag, &isa_mem_bs_tag,
91 	    WSDISPLAY_TYPE_ISAVGA, NULL);
92 }
93 
94 int
95 vga_ofbus_cnattach(int phandle, bus_space_tag_t iot, bus_space_tag_t memt)
96 {
97 	if (OF_call_method("text-mode3", phandle, 0, 0) != 0) {
98 		printf("vga_ofbus_match: text-mode3 method invocation on VGA "
99 		       "screen device failed\n");
100 	}
101 
102 	return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
103 }
104