bwtwo.c revision 1.2
1 /* $NetBSD: bwtwo.c,v 1.2 2000/08/20 19:58:53 pk 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 (at) NetBSD.ORG>. 89 * Overlay plane handling hints and ideas provided by Brad Spencer. 90 */ 91 92 #include <sys/param.h> 93 #include <sys/systm.h> 94 #include <sys/device.h> 95 #include <sys/ioctl.h> 96 #include <sys/malloc.h> 97 #include <sys/mman.h> 98 #include <sys/tty.h> 99 #include <sys/conf.h> 100 101 #include <machine/autoconf.h> 102 #include <machine/eeprom.h> 103 #include <machine/conf.h> 104 105 #include <dev/sun/fbio.h> 106 #include <dev/sun/fbvar.h> 107 #include <dev/sun/btreg.h> 108 #include <dev/sun/bwtworeg.h> 109 #include <dev/sun/bwtwovar.h> 110 #include <dev/sun/pfourreg.h> 111 112 /* cdevsw prototypes */ 113 cdev_decl(bwtwo); 114 115 extern struct cfdriver bwtwo_cd; 116 117 /* XXX we do not handle frame buffer interrupts (do not know how) */ 118 static void bwtwounblank(struct device *); 119 120 /* frame buffer generic driver */ 121 static struct fbdriver bwtwofbdriver = { 122 bwtwounblank, bwtwoopen, bwtwoclose, bwtwoioctl, bwtwopoll, bwtwommap 123 }; 124 125 int 126 bwtwo_pfour_probe(vaddr, arg) 127 void *vaddr; 128 void *arg; 129 { 130 struct cfdata *cf = arg; 131 132 switch (fb_pfour_id(vaddr)) { 133 case PFOUR_ID_BW: 134 case PFOUR_ID_COLOR8P1: /* bwtwo in ... */ 135 case PFOUR_ID_COLOR24: /* ...overlay plane */ 136 /* This is wrong; should be done in bwtwo_attach() */ 137 cf->cf_flags |= FB_PFOUR; 138 /* FALLTHROUGH */ 139 case PFOUR_NOTPFOUR: 140 return (1); 141 } 142 return (0); 143 } 144 145 void 146 bwtwoattach(sc, name, isconsole) 147 struct bwtwo_softc *sc; 148 char *name; 149 int isconsole; 150 { 151 struct fbdevice *fb = &sc->sc_fb; 152 153 /* Fill in the remaining fbdevice values */ 154 fb->fb_driver = &bwtwofbdriver; 155 fb->fb_device = &sc->sc_dev; 156 fb->fb_type.fb_type = FBTYPE_SUN2BW; 157 fb->fb_type.fb_cmsize = 0; 158 fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; 159 printf(": %s, %d x %d", name, 160 fb->fb_type.fb_width, fb->fb_type.fb_height); 161 162 /* Insure video is enabled */ 163 sc->sc_set_video(sc, 1); 164 165 if (isconsole) { 166 printf(" (console)\n"); 167 #ifdef RASTERCONSOLE 168 /* 169 * XXX rcons doesn't seem to work properly on the overlay 170 * XXX plane. This is a temporary kludge until someone 171 * XXX fixes it. 172 */ 173 if ((fb->fb_flags & FB_PFOUR) == 0 || 174 (sc->sc_ovtype == BWO_NONE)) 175 fbrcons_init(fb); 176 #endif 177 } else 178 printf("\n"); 179 180 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) { 181 char *ovnam; 182 183 switch (sc->sc_ovtype) { 184 case BWO_CGFOUR: 185 ovnam = "cgfour"; 186 break; 187 188 case BWO_CGEIGHT: 189 ovnam = "cgeight"; 190 break; 191 192 default: 193 ovnam = "unknown"; 194 break; 195 } 196 printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam); 197 } 198 199 /* 200 * If we're on an overlay plane of a color framebuffer, 201 * then we don't force the issue in fb_attach() because 202 * we'd like the color framebuffer to actually be the 203 * "console framebuffer". We're only around to speed 204 * up rconsole. 205 */ 206 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE )) 207 fb_attach(fb, 0); 208 else 209 fb_attach(fb, isconsole); 210 } 211 212 int 213 bwtwoopen(dev, flags, mode, p) 214 dev_t dev; 215 int flags, mode; 216 struct proc *p; 217 { 218 int unit = minor(dev); 219 220 if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL) 221 return (ENXIO); 222 223 return (0); 224 } 225 226 int 227 bwtwoclose(dev, flags, mode, p) 228 dev_t dev; 229 int flags, mode; 230 struct proc *p; 231 { 232 233 return (0); 234 } 235 236 int 237 bwtwoioctl(dev, cmd, data, flags, p) 238 dev_t dev; 239 u_long cmd; 240 caddr_t data; 241 int flags; 242 struct proc *p; 243 { 244 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 245 246 switch (cmd) { 247 248 case FBIOGTYPE: 249 *(struct fbtype *)data = sc->sc_fb.fb_type; 250 break; 251 252 case FBIOGVIDEO: 253 *(int *)data = sc->sc_get_video(sc); 254 break; 255 256 case FBIOSVIDEO: 257 sc->sc_set_video(sc, (*(int *)data)); 258 break; 259 260 default: 261 return (ENOTTY); 262 } 263 return (0); 264 } 265 266 static void 267 bwtwounblank(dev) 268 struct device *dev; 269 { 270 struct bwtwo_softc *sc = (struct bwtwo_softc *)dev; 271 272 sc->sc_set_video(sc, 1); 273 } 274 275 int 276 bwtwopoll(dev, events, p) 277 dev_t dev; 278 int events; 279 struct proc *p; 280 { 281 282 return (seltrue(dev, events, p)); 283 } 284 285 /* 286 * Return the address that would map the given device at the given 287 * offset, allowing for the given protection, or return -1 for error. 288 */ 289 paddr_t 290 bwtwommap(dev, off, prot) 291 dev_t dev; 292 off_t off; 293 int prot; 294 { 295 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 296 bus_space_handle_t bh; 297 298 if (off & PGOFSET) 299 panic("bwtwommap"); 300 301 if (off >= sc->sc_fb.fb_type.fb_size) 302 return (-1); 303 304 if (bus_space_mmap(sc->sc_bustag, 305 sc->sc_btype, 306 sc->sc_paddr + sc->sc_pixeloffset + off, 307 BUS_SPACE_MAP_LINEAR, &bh)) 308 return (-1); 309 310 return ((paddr_t)bh); 311 } 312
Indexes created Tue Sep 23 02:09:52 GMT 2025