1 /* $NetBSD: cgsix_obio.c,v 1.28 2023/12/20 05:33:18 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Paul Kranenburg.
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 * color display (cgsix) driver; sun4 obio bus front-end.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: cgsix_obio.c,v 1.28 2023/12/20 05:33:18 thorpej Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/buf.h>
42 #include <sys/device.h>
43 #include <sys/ioctl.h>
44 #include <sys/mman.h>
45 #include <sys/tty.h>
46 #include <sys/conf.h>
47
48 #ifdef DEBUG
49 #include <sys/proc.h>
50 #include <sys/syslog.h>
51 #endif
52
53 #include <sys/bus.h>
54 #include <machine/autoconf.h>
55 #include <machine/eeprom.h>
56
57 #include <dev/sun/fbio.h>
58 #include <dev/sun/fbvar.h>
59 #include <dev/sun/btreg.h>
60 #include <dev/sun/btvar.h>
61 #include <dev/sun/cgsixreg.h>
62 #include <dev/sun/cgsixvar.h>
63 #include <dev/sun/pfourreg.h>
64
65 /* autoconfiguration driver */
66 static int cgsixmatch(device_t, struct cfdata *, void *);
67 static void cgsixattach(device_t, device_t, void *);
68 static int cg6_pfour_probe(void *, void *);
69
70 CFATTACH_DECL_NEW(cgsix_obio, sizeof(struct cgsix_softc),
71 cgsixmatch, cgsixattach, NULL, NULL);
72
73 /*
74 * Match a cgsix.
75 */
76 static int
cgsixmatch(device_t parent,struct cfdata * cf,void * aux)77 cgsixmatch(device_t parent, struct cfdata *cf, void *aux)
78 {
79 union obio_attach_args *uoba = aux;
80 struct obio4_attach_args *oba;
81
82 if (uoba->uoba_isobio4 == 0)
83 return (0);
84
85 oba = &uoba->uoba_oba4;
86 return (bus_space_probe(oba->oba_bustag,
87 oba->oba_paddr + CGSIX_FHC_OFFSET,
88 4, /* probe size */
89 0, /* offset */
90 0, /* flags */
91 cg6_pfour_probe, NULL));
92 }
93
94 static int
cg6_pfour_probe(void * vaddr,void * arg)95 cg6_pfour_probe(void *vaddr, void *arg)
96 {
97
98 return (fb_pfour_id(vaddr) == PFOUR_ID_FASTCOLOR);
99 }
100
101
102 /*
103 * Attach a display.
104 */
105 static void
cgsixattach(device_t parent,device_t self,void * aux)106 cgsixattach(device_t parent, device_t self, void *aux)
107 {
108 struct cgsix_softc *sc = device_private(self);
109 union obio_attach_args *uoba = aux;
110 struct obio4_attach_args *oba;
111 struct eeprom *eep = (struct eeprom *)eeprom_va;
112 struct fbdevice *fb = &sc->sc_fb;
113 bus_space_handle_t bh;
114 int constype, isconsole;
115 const char *name;
116
117 sc->sc_dev = self;
118 oba = &uoba->uoba_oba4;
119
120 /* Remember cookies for cgsix_mmap() */
121 sc->sc_bustag = oba->oba_bustag;
122 sc->sc_paddr = (bus_addr_t)oba->oba_paddr;
123
124 fb->fb_device = sc->sc_dev;
125 fb->fb_type.fb_type = FBTYPE_SUNFAST_COLOR;
126 fb->fb_flags = device_cfdata(sc->sc_dev)->cf_flags & FB_USERMASK;
127 fb->fb_type.fb_depth = 8;
128
129 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
130
131 sc->sc_ramsize = 1024 * 1024; /* All our cgsix's are 1MB */
132
133 /*
134 * Dunno what the PROM has mapped, though obviously it must have
135 * the video RAM mapped. Just map what we care about for ourselves
136 * (the FHC, THC, and Brooktree registers).
137 */
138 if (bus_space_map(oba->oba_bustag,
139 oba->oba_paddr + CGSIX_BT_OFFSET,
140 sizeof(*sc->sc_bt),
141 BUS_SPACE_MAP_LINEAR,
142 &bh) != 0) {
143 printf("%s: cannot map brooktree registers\n", device_xname(self));
144 return;
145 }
146 sc->sc_bt = (struct bt_regs *)bh;
147
148 if (bus_space_map(oba->oba_bustag,
149 oba->oba_paddr + CGSIX_FHC_OFFSET,
150 sizeof(*sc->sc_fhc),
151 BUS_SPACE_MAP_LINEAR,
152 &bh) != 0) {
153 printf("%s: cannot map FHC registers\n", device_xname(self));
154 return;
155 }
156 sc->sc_fhc = (int *)bh;
157
158 if (bus_space_map(oba->oba_bustag,
159 oba->oba_paddr + CGSIX_THC_OFFSET,
160 sizeof(*sc->sc_thc),
161 BUS_SPACE_MAP_LINEAR,
162 &bh) != 0) {
163 printf("%s: cannot map THC registers\n", device_xname(self));
164 return;
165 }
166 sc->sc_thc = (struct cg6_thc *)bh;
167
168 if (bus_space_map(oba->oba_bustag,
169 oba->oba_paddr + CGSIX_TEC_OFFSET,
170 sizeof(*sc->sc_tec),
171 BUS_SPACE_MAP_LINEAR,
172 &bh) != 0) {
173 printf("%s: cannot map TEC registers\n", device_xname(self));
174 return;
175 }
176 sc->sc_tec = (struct cg6_tec_xxx *)bh;
177
178 if (bus_space_map(oba->oba_bustag,
179 oba->oba_paddr + CGSIX_FBC_OFFSET,
180 sizeof(*sc->sc_fbc),
181 BUS_SPACE_MAP_LINEAR,
182 &bh) != 0) {
183 printf("%s: cannot map FBC registers\n", device_xname(self));
184 return;
185 }
186 sc->sc_fbc = (struct cg6_fbc *)bh;
187
188
189 if (fb_pfour_id(sc->sc_fhc) == PFOUR_ID_FASTCOLOR) {
190 fb->fb_flags |= FB_PFOUR;
191 name = "cgsix/p4";
192 } else
193 name = "cgsix";
194
195 constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_COLOR;
196
197 /*
198 * Check to see if this is the console if there's no eeprom info
199 * to be found, or if it's the correct framebuffer type.
200 */
201 if (eep == NULL || eep->eeConsole == constype)
202 isconsole = fb_is_console(0);
203 else
204 isconsole = 0;
205
206 if (bus_space_map(oba->oba_bustag,
207 oba->oba_paddr + CGSIX_RAM_OFFSET,
208 sc->sc_ramsize,
209 BUS_SPACE_MAP_LINEAR,
210 &bh) != 0) {
211 printf("%s: cannot map pixels\n", device_xname(self));
212 return;
213 }
214 sc->sc_fb.fb_pixels = (void *)bh;
215
216 cg6attach(sc, name, isconsole);
217 }
218