bwtwo.c revision 1.5
1/* $NetBSD: bwtwo.c,v 1.5 2002/09/06 13:18:43 gehenna 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. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39/* 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This software was developed by the Computer Systems Engineering group 44 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 45 * contributed to Berkeley. 46 * 47 * All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Lawrence Berkeley Laboratory. 51 * 52 * Redistribution and use in source and binary forms, with or without 53 * modification, are permitted provided that the following conditions 54 * are met: 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. All advertising materials mentioning features or use of this software 61 * must display the following acknowledgement: 62 * This product includes software developed by the University of 63 * California, Berkeley and its contributors. 64 * 4. Neither the name of the University nor the names of its contributors 65 * may be used to endorse or promote products derived from this software 66 * without specific prior written permission. 67 * 68 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 71 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 72 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 73 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 74 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 75 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 76 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 77 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 78 * SUCH DAMAGE. 79 * 80 * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 81 */ 82 83/* 84 * black & white display (bwtwo) driver. 85 * 86 * Does not handle interrupts, even though they can occur. 87 * 88 * P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.ORG>. 89 * Overlay plane handling hints and ideas provided by Brad Spencer. 90 */ 91 92#include <sys/cdefs.h> 93__KERNEL_RCSID(0, "$NetBSD: bwtwo.c,v 1.5 2002/09/06 13:18:43 gehenna Exp $"); 94 95#include <sys/param.h> 96#include <sys/systm.h> 97#include <sys/device.h> 98#include <sys/ioctl.h> 99#include <sys/malloc.h> 100#include <sys/mman.h> 101#include <sys/tty.h> 102#include <sys/conf.h> 103 104#include <machine/autoconf.h> 105#include <machine/eeprom.h> 106 107#include <dev/sun/fbio.h> 108#include <dev/sun/fbvar.h> 109#include <dev/sun/btreg.h> 110#include <dev/sun/bwtworeg.h> 111#include <dev/sun/bwtwovar.h> 112#include <dev/sun/pfourreg.h> 113 114extern struct cfdriver bwtwo_cd; 115 116dev_type_open(bwtwoopen); 117dev_type_ioctl(bwtwoioctl); 118dev_type_mmap(bwtwommap); 119 120const struct cdevsw bwtwo_cdevsw = { 121 bwtwoopen, nullclose, noread, nowrite, bwtwoioctl, 122 nostop, notty, nopoll, bwtwommap, 123}; 124 125/* XXX we do not handle frame buffer interrupts (do not know how) */ 126static void bwtwounblank(struct device *); 127 128/* frame buffer generic driver */ 129static struct fbdriver bwtwofbdriver = { 130 bwtwounblank, bwtwoopen, nullclose, bwtwoioctl, nopoll, bwtwommap 131}; 132 133int 134bwtwo_pfour_probe(vaddr, arg) 135 void *vaddr; 136 void *arg; 137{ 138 struct cfdata *cf = arg; 139 140 switch (fb_pfour_id(vaddr)) { 141 case PFOUR_ID_BW: 142 case PFOUR_ID_COLOR8P1: /* bwtwo in ... */ 143 case PFOUR_ID_COLOR24: /* ...overlay plane */ 144 /* This is wrong; should be done in bwtwo_attach() */ 145 cf->cf_flags |= FB_PFOUR; 146 /* FALLTHROUGH */ 147 case PFOUR_NOTPFOUR: 148 return (1); 149 } 150 return (0); 151} 152 153void 154bwtwoattach(sc, name, isconsole) 155 struct bwtwo_softc *sc; 156 char *name; 157 int isconsole; 158{ 159 struct fbdevice *fb = &sc->sc_fb; 160 161 /* Fill in the remaining fbdevice values */ 162 fb->fb_driver = &bwtwofbdriver; 163 fb->fb_device = &sc->sc_dev; 164 fb->fb_type.fb_type = FBTYPE_SUN2BW; 165 fb->fb_type.fb_cmsize = 0; 166 fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; 167 printf(": %s, %d x %d", name, 168 fb->fb_type.fb_width, fb->fb_type.fb_height); 169 170 /* Insure video is enabled */ 171 sc->sc_set_video(sc, 1); 172 173 if (isconsole) { 174 printf(" (console)\n"); 175#ifdef RASTERCONSOLE 176 /* 177 * XXX rcons doesn't seem to work properly on the overlay 178 * XXX plane. This is a temporary kludge until someone 179 * XXX fixes it. 180 */ 181 if ((fb->fb_flags & FB_PFOUR) == 0 || 182 (sc->sc_ovtype == BWO_NONE)) 183 fbrcons_init(fb); 184#endif 185 } else 186 printf("\n"); 187 188 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) { 189 char *ovnam; 190 191 switch (sc->sc_ovtype) { 192 case BWO_CGFOUR: 193 ovnam = "cgfour"; 194 break; 195 196 case BWO_CGEIGHT: 197 ovnam = "cgeight"; 198 break; 199 200 default: 201 ovnam = "unknown"; 202 break; 203 } 204 printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam); 205 } 206 207 /* 208 * If we're on an overlay plane of a color framebuffer, 209 * then we don't force the issue in fb_attach() because 210 * we'd like the color framebuffer to actually be the 211 * "console framebuffer". We're only around to speed 212 * up rconsole. 213 */ 214 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE )) 215 fb_attach(fb, 0); 216 else 217 fb_attach(fb, isconsole); 218} 219 220int 221bwtwoopen(dev, flags, mode, p) 222 dev_t dev; 223 int flags, mode; 224 struct proc *p; 225{ 226 int unit = minor(dev); 227 228 if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL) 229 return (ENXIO); 230 231 return (0); 232} 233 234int 235bwtwoioctl(dev, cmd, data, flags, p) 236 dev_t dev; 237 u_long cmd; 238 caddr_t data; 239 int flags; 240 struct proc *p; 241{ 242 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 243 244 switch (cmd) { 245 246 case FBIOGTYPE: 247 *(struct fbtype *)data = sc->sc_fb.fb_type; 248 break; 249 250 case FBIOGVIDEO: 251 *(int *)data = sc->sc_get_video(sc); 252 break; 253 254 case FBIOSVIDEO: 255 sc->sc_set_video(sc, (*(int *)data)); 256 break; 257 258 default: 259 return (ENOTTY); 260 } 261 return (0); 262} 263 264static void 265bwtwounblank(dev) 266 struct device *dev; 267{ 268 struct bwtwo_softc *sc = (struct bwtwo_softc *)dev; 269 270 sc->sc_set_video(sc, 1); 271} 272 273/* 274 * Return the address that would map the given device at the given 275 * offset, allowing for the given protection, or return -1 for error. 276 */ 277paddr_t 278bwtwommap(dev, off, prot) 279 dev_t dev; 280 off_t off; 281 int prot; 282{ 283 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 284 285 if (off & PGOFSET) 286 panic("bwtwommap"); 287 288 if (off >= sc->sc_fb.fb_type.fb_size) 289 return (-1); 290 291 return (bus_space_mmap(sc->sc_bustag, 292 sc->sc_paddr, sc->sc_pixeloffset + off, 293 prot, BUS_SPACE_MAP_LINEAR)); 294} 295