1 /* $NetBSD: bwtwo_any.c,v 1.18 2023/12/20 05:13:35 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe and Matthew Fredette.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1992, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * This software was developed by the Computer Systems Engineering group
37 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
38 * contributed to Berkeley.
39 *
40 * All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by the University of
43 * California, Lawrence Berkeley Laboratory.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. Neither the name of the University nor the names of its contributors
54 * may be used to endorse or promote products derived from this software
55 * without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67 * SUCH DAMAGE.
68 *
69 * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93
70 */
71
72 /*
73 * black&white display (bwtwo) driver.
74 *
75 * Does not handle interrupts, even though they can occur.
76 *
77 * P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.org>.
78 * Overlay plane handling hints and ideas provided by Brad Spencer.
79 */
80
81 #include <sys/cdefs.h>
82 __KERNEL_RCSID(0, "$NetBSD: bwtwo_any.c,v 1.18 2023/12/20 05:13:35 thorpej Exp $");
83
84 #include <sys/param.h>
85 #include <sys/systm.h>
86 #include <sys/device.h>
87 #include <sys/ioctl.h>
88 #include <sys/mman.h>
89 #include <sys/tty.h>
90 #include <sys/conf.h>
91
92 #include <machine/autoconf.h>
93 #include <sun2/sun2/control.h>
94
95 #include <dev/sun/fbio.h>
96 #include <dev/sun/fbvar.h>
97 #include <dev/sun/btreg.h>
98 #include <sun2/dev/bwtworeg.h>
99 #include <dev/sun/bwtwovar.h>
100
101 /* autoconfiguration driver */
102 static int bwtwomatch_any(device_t, cfdata_t, void *);
103 static void bwtwoattach_any(device_t, device_t, void *);
104
105 struct bwtwosun2_softc {
106 struct bwtwo_softc sc;
107 bus_space_handle_t bh;
108 };
109
110 CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwosun2_softc),
111 bwtwomatch_any, bwtwoattach_any, NULL, NULL);
112
113 CFATTACH_DECL_NEW(bwtwo_obmem, sizeof(struct bwtwosun2_softc),
114 bwtwomatch_any, bwtwoattach_any, NULL, NULL);
115
116 static int bwtwo_get_video_sun2(struct bwtwo_softc *);
117 static void bwtwo_set_video_sun2(struct bwtwo_softc *, int);
118
119 extern int fbnode;
120
121 static int
bwtwomatch_any(device_t parent,cfdata_t cf,void * aux)122 bwtwomatch_any(device_t parent, cfdata_t cf, void *aux)
123 {
124 struct mainbus_attach_args *ma = aux;
125 bus_space_handle_t bh;
126 int matched;
127
128 /* Make sure there is something there... */
129 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG,
130 sizeof(struct bwtworeg), 0, &bh))
131 return (0);
132 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0);
133 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct bwtworeg));
134 return (matched);
135 }
136
137 static void
bwtwoattach_any(device_t parent,device_t self,void * aux)138 bwtwoattach_any(device_t parent, device_t self, void *aux)
139 {
140 struct bwtwosun2_softc *scsun2 = device_private(self);
141 struct bwtwo_softc *sc = &scsun2->sc;
142 struct mainbus_attach_args *ma = aux;
143 struct fbdevice *fb = &sc->sc_fb;
144 bus_space_handle_t bh;
145 int isconsole;
146 const char *name;
147
148 sc->sc_dev = self;
149
150 /* Remember cookies for bwtwo_mmap() */
151 sc->sc_bustag = ma->ma_bustag;
152 sc->sc_paddr = ma->ma_paddr;
153
154 fb->fb_flags = device_cfdata(self)->cf_flags;
155 fb->fb_type.fb_depth = 1;
156 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
157
158 isconsole = fb_is_console(0);
159
160 /* A plain bwtwo */
161 sc->sc_reg = NULL;
162 fb->fb_pfour = NULL;
163 name = "bwtwo";
164 sc->sc_pixeloffset = BWREG_MEM;
165 sc->sc_get_video = bwtwo_get_video_sun2;
166 sc->sc_set_video = bwtwo_set_video_sun2;
167
168 /* Map the registers. */
169 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG,
170 sizeof(struct bwtworeg), 0, &scsun2->bh)) {
171 printf("%s: cannot map regs\n", device_xname(self));
172 return;
173 }
174
175 if (isconsole) {
176 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
177 if (bus_space_map(ma->ma_bustag,
178 ma->ma_paddr + sc->sc_pixeloffset,
179 ramsize,
180 BUS_SPACE_MAP_LINEAR, &bh) != 0) {
181 printf("%s: cannot map pixels\n", device_xname(self));
182 return;
183 }
184 sc->sc_fb.fb_pixels = (char *)bh;
185 }
186
187 bwtwoattach(sc, name, isconsole);
188 }
189
190 static void
bwtwo_set_video_sun2(struct bwtwo_softc * sc,int enable)191 bwtwo_set_video_sun2(struct bwtwo_softc *sc, int enable)
192 {
193 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc;
194 unsigned char cr;
195
196 cr = bus_space_read_1(sc->sc_bustag, scsun2->bh, 0);
197 bus_space_write_1(sc->sc_bustag, scsun2->bh, 0,
198 (enable ?
199 (cr | BW2_CR_ENABLE_VIDEO) :
200 (cr & ~BW2_CR_ENABLE_VIDEO)));
201 return;
202 }
203
204 static int
bwtwo_get_video_sun2(struct bwtwo_softc * sc)205 bwtwo_get_video_sun2(struct bwtwo_softc *sc)
206 {
207 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc;
208
209 return ((bus_space_read_1(sc->sc_bustag, scsun2->bh, 0) &
210 BW2_CR_ENABLE_VIDEO) != 0);
211 }
212