bwtwo.c revision 1.15
1 /* $NetBSD: bwtwo.c,v 1.15 2007/03/04 06:02:44 christos 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. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 77 */ 78 79 /* 80 * black & white display (bwtwo) driver. 81 * 82 * Does not handle interrupts, even though they can occur. 83 * 84 * P4 and overlay plane support by Jason R. Thorpe <thorpej (at) NetBSD.org>. 85 * Overlay plane handling hints and ideas provided by Brad Spencer. 86 */ 87 88 #include <sys/cdefs.h> 89 __KERNEL_RCSID(0, "$NetBSD: bwtwo.c,v 1.15 2007/03/04 06:02:44 christos Exp $"); 90 91 #include <sys/param.h> 92 #include <sys/systm.h> 93 #include <sys/device.h> 94 #include <sys/ioctl.h> 95 #include <sys/malloc.h> 96 #include <sys/mman.h> 97 #include <sys/tty.h> 98 #include <sys/conf.h> 99 100 #include <machine/autoconf.h> 101 #include <machine/eeprom.h> 102 103 #include <dev/sun/fbio.h> 104 #include <dev/sun/fbvar.h> 105 #include <dev/sun/btreg.h> 106 #include <dev/sun/bwtworeg.h> 107 #include <dev/sun/bwtwovar.h> 108 #include <dev/sun/pfourreg.h> 109 110 extern struct cfdriver bwtwo_cd; 111 112 dev_type_open(bwtwoopen); 113 dev_type_ioctl(bwtwoioctl); 114 dev_type_mmap(bwtwommap); 115 116 const struct cdevsw bwtwo_cdevsw = { 117 bwtwoopen, nullclose, noread, nowrite, bwtwoioctl, 118 nostop, notty, nopoll, bwtwommap, nokqfilter, 119 }; 120 121 /* XXX we do not handle frame buffer interrupts (do not know how) */ 122 static void bwtwounblank(struct device *); 123 124 /* frame buffer generic driver */ 125 static struct fbdriver bwtwofbdriver = { 126 bwtwounblank, bwtwoopen, nullclose, bwtwoioctl, nopoll, bwtwommap, 127 nokqfilter 128 }; 129 130 int 131 bwtwo_pfour_probe(vaddr, arg) 132 void *vaddr; 133 void *arg; 134 { 135 struct cfdata *cf = arg; 136 137 switch (fb_pfour_id(vaddr)) { 138 case PFOUR_ID_BW: 139 case PFOUR_ID_COLOR8P1: /* bwtwo in ... */ 140 case PFOUR_ID_COLOR24: /* ...overlay plane */ 141 /* This is wrong; should be done in bwtwo_attach() */ 142 cf->cf_flags |= FB_PFOUR; 143 /* FALLTHROUGH */ 144 case PFOUR_NOTPFOUR: 145 return (1); 146 } 147 return (0); 148 } 149 150 void 151 bwtwoattach(sc, name, isconsole) 152 struct bwtwo_softc *sc; 153 const char *name; 154 int isconsole; 155 { 156 struct fbdevice *fb = &sc->sc_fb; 157 158 /* Fill in the remaining fbdevice values */ 159 fb->fb_driver = &bwtwofbdriver; 160 fb->fb_device = &sc->sc_dev; 161 fb->fb_type.fb_type = FBTYPE_SUN2BW; 162 fb->fb_type.fb_cmsize = 0; 163 fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; 164 printf(": %s, %d x %d", name, 165 fb->fb_type.fb_width, fb->fb_type.fb_height); 166 167 /* Insure video is enabled */ 168 sc->sc_set_video(sc, 1); 169 170 if (isconsole) { 171 printf(" (console)\n"); 172 #ifdef RASTERCONSOLE 173 /* 174 * XXX rcons doesn't seem to work properly on the overlay 175 * XXX plane. This is a temporary kludge until someone 176 * XXX fixes it. 177 */ 178 if ((fb->fb_flags & FB_PFOUR) == 0 || 179 (sc->sc_ovtype == BWO_NONE)) 180 fbrcons_init(fb); 181 #endif 182 } else 183 printf("\n"); 184 185 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) { 186 const char *ovnam; 187 188 switch (sc->sc_ovtype) { 189 case BWO_CGFOUR: 190 ovnam = "cgfour"; 191 break; 192 193 case BWO_CGEIGHT: 194 ovnam = "cgeight"; 195 break; 196 197 default: 198 ovnam = "unknown"; 199 break; 200 } 201 printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam); 202 } 203 204 /* 205 * If we're on an overlay plane of a color framebuffer, 206 * then we don't force the issue in fb_attach() because 207 * we'd like the color framebuffer to actually be the 208 * "console framebuffer". We're only around to speed 209 * up rconsole. 210 */ 211 if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE )) 212 fb_attach(fb, 0); 213 else 214 fb_attach(fb, isconsole); 215 } 216 217 int 218 bwtwoopen(dev, flags, mode, l) 219 dev_t dev; 220 int flags, mode; 221 struct lwp *l; 222 { 223 int unit = minor(dev); 224 225 if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL) 226 return (ENXIO); 227 228 return (0); 229 } 230 231 int 232 bwtwoioctl(dev, cmd, data, flags, l) 233 dev_t dev; 234 u_long cmd; 235 void *data; 236 int flags; 237 struct lwp *l; 238 { 239 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 240 241 switch (cmd) { 242 243 case FBIOGTYPE: 244 *(struct fbtype *)data = sc->sc_fb.fb_type; 245 break; 246 247 case FBIOGVIDEO: 248 *(int *)data = sc->sc_get_video(sc); 249 break; 250 251 case FBIOSVIDEO: 252 sc->sc_set_video(sc, (*(int *)data)); 253 break; 254 255 default: 256 return (ENOTTY); 257 } 258 return (0); 259 } 260 261 static void 262 bwtwounblank(dev) 263 struct device *dev; 264 { 265 struct bwtwo_softc *sc = (struct bwtwo_softc *)dev; 266 267 sc->sc_set_video(sc, 1); 268 } 269 270 /* 271 * Return the address that would map the given device at the given 272 * offset, allowing for the given protection, or return -1 for error. 273 */ 274 paddr_t 275 bwtwommap(dev, off, prot) 276 dev_t dev; 277 off_t off; 278 int prot; 279 { 280 struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; 281 282 if (off & PGOFSET) 283 panic("bwtwommap"); 284 285 if (off >= sc->sc_fb.fb_type.fb_size) 286 return (-1); 287 288 return (bus_space_mmap(sc->sc_bustag, 289 sc->sc_paddr, sc->sc_pixeloffset + off, 290 prot, BUS_SPACE_MAP_LINEAR)); 291 } 292
Indexes created Tue Sep 23 22:09:46 GMT 2025