bwtwo.c revision 1.6
1 /* $NetBSD: bwtwo.c,v 1.6 2002/10/23 09:13:53 jdolecek 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/cdefs.h> 93 __KERNEL_RCSID(0, "$NetBSD: bwtwo.c,v 1.6 2002/10/23 09:13:53 jdolecek 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> 113 114 extern struct cfdriver bwtwo_cd; 115 116 dev_type_open(bwtwoopen); 117 dev_type_ioctl(bwtwoioctl); 118 dev_type_mmap(bwtwommap); 119 120 const struct cdevsw bwtwo_cdevsw = { 121 bwtwoopen, nullclose, noread, nowrite, bwtwoioctl, 122 nostop, notty, nopoll, bwtwommap, nokqfilter, 123 }; 124 125 /* XXX we do not handle frame buffer interrupts (do not know how) */ 126 static void bwtwounblank(struct device *); 127 128 /* frame buffer generic driver */ 129 static struct fbdriver bwtwofbdriver = { 130 bwtwounblank, bwtwoopen, nullclose, bwtwoioctl, nopoll, bwtwommap, 131 nokqfilter 132 }; 133 134 int 135 bwtwo_pfour_probe(vaddr, arg) 136 void *vaddr; 137 void *arg; 138 { 139 struct cfdata *cf = arg; 140 141 switch (fb_pfour_id(vaddr)) { 142 case PFOUR_ID_BW: 143 case PFOUR_ID_COLOR8P1: /* bwtwo in ... */ 144 case PFOUR_ID_COLOR24: /* ...overlay plane */ 145 /* This is wrong; should be done in bwtwo_attach() */ 146 cf->cf_flags |= FB_PFOUR; 147 /* FALLTHROUGH */ 148 case PFOUR_NOTPFOUR: 149 return (1); 150 } 151 return (0); 152 } 153 154 void 155 bwtwoattach(sc, name, isconsole) 156 struct bwtwo_softc *sc; 157 char *name; 158 int isconsole; 159 { 160 struct fbdevice *fb = &sc->sc_fb; 161 162 /* Fill in the remaining fbdevice values */ 163 fb->fb_driver = &bwtwofbdriver; 164 fb->fb_device = &sc->sc_dev; 165 fb->fb_type.fb_type = FBTYPE_SUN2BW; 166 fb->fb_type.fb_cmsize = 0; 167 fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; 168 printf(": %s, %d x %d", name, 169 fb->fb_type.fb_width, fb->fb_type.fb_height); 170 171 /* Insure video is enabled */ 172 sc->sc_set_video(sc, 1); 173 174 if (isconsole) { 175 printf(" (console)\n"); 176 #ifdef RASTERCONSOLE 177 /* 178 * XXX rcons doesn't seem to work properly on the overlay 179 * XXX plane. This is a temporary kludge until someone 180 * XXX fixes it. 181 */ 182 if ((fb->fb_flags & FB_PFOUR) == 0 || 183 (sc->sc_ovtype == BWO_NONE)) 184 fbrcons_init(fb); 185 #endif 186 } else 187 printf("\n"); 188 189 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) { 190 char *ovnam; 191 192 switch (sc->sc_ovtype) { 193 case BWO_CGFOUR: 194 ovnam = "cgfour"; 195 break; 196 197 case BWO_CGEIGHT: 198 ovnam = "cgeight"; 199 break; 200 201 default: 202 ovnam = "unknown"; 203 break; 204 } 205 printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam); 206 } 207 208 /* 209 * If we're on an overlay plane of a color framebuffer, 210 * then we don't force the issue in fb_attach() because 211 * we'd like the color framebuffer to actually be the 212 * "console framebuffer". We're only around to speed 213 * up rconsole. 214 */ 215 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE )) 216 fb_attach(fb, 0); 217 else 218 fb_attach(fb, isconsole); 219 } 220 221 int 222 bwtwoopen(dev, flags, mode, p) 223 dev_t dev; 224 int flags, mode; 225 struct proc *p; 226 { 227 int unit = minor(dev); 228 229 if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL) 230 return (ENXIO); 231 232 return (0); 233 } 234 235 int 236 bwtwoioctl(dev, cmd, data, flags, p) 237 dev_t dev; 238 u_long cmd; 239 caddr_t data; 240 int flags; 241 struct proc *p; 242 { 243 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 244 245 switch (cmd) { 246 247 case FBIOGTYPE: 248 *(struct fbtype *)data = sc->sc_fb.fb_type; 249 break; 250 251 case FBIOGVIDEO: 252 *(int *)data = sc->sc_get_video(sc); 253 break; 254 255 case FBIOSVIDEO: 256 sc->sc_set_video(sc, (*(int *)data)); 257 break; 258 259 default: 260 return (ENOTTY); 261 } 262 return (0); 263 } 264 265 static void 266 bwtwounblank(dev) 267 struct device *dev; 268 { 269 struct bwtwo_softc *sc = (struct bwtwo_softc *)dev; 270 271 sc->sc_set_video(sc, 1); 272 } 273 274 /* 275 * Return the address that would map the given device at the given 276 * offset, allowing for the given protection, or return -1 for error. 277 */ 278 paddr_t 279 bwtwommap(dev, off, prot) 280 dev_t dev; 281 off_t off; 282 int prot; 283 { 284 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 285 286 if (off & PGOFSET) 287 panic("bwtwommap"); 288 289 if (off >= sc->sc_fb.fb_type.fb_size) 290 return (-1); 291 292 return (bus_space_mmap(sc->sc_bustag, 293 sc->sc_paddr, sc->sc_pixeloffset + off, 294 prot, BUS_SPACE_MAP_LINEAR)); 295 } 296
Indexes created Tue Sep 23 14:10:03 GMT 2025