bwtwo_obio.c revision 1.1
1 /* $NetBSD: bwtwo_obio.c,v 1.1 1999/08/10 04:56:30 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. 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 <vm/vm.h> 102 103 #include <machine/fbio.h> 104 #include <machine/autoconf.h> 105 #include <machine/pmap.h> 106 #include <machine/fbvar.h> 107 #include <machine/eeprom.h> 108 #include <machine/ctlreg.h> 109 #include <machine/conf.h> 110 #include <sparc/sparc/asm.h> 111 112 #include <sparc/dev/btreg.h> 113 #include <sparc/dev/bwtworeg.h> 114 #include <sparc/dev/bwtwovar.h> 115 #include <sparc/dev/pfourreg.h> 116 117 /* autoconfiguration driver */ 118 static void bwtwoattach_obio __P((struct device *, struct device *, void *)); 119 static int bwtwomatch_obio __P((struct device *, struct cfdata *, void *)); 120 121 122 struct cfattach bwtwo_obio_ca = { 123 sizeof(struct bwtwo_softc), bwtwomatch_obio, bwtwoattach_obio 124 }; 125 126 static int bwtwo_get_video_sun4 __P((struct bwtwo_softc *)); 127 static void bwtwo_set_video_sun4 __P((struct bwtwo_softc *, int)); 128 129 extern int fbnode; 130 extern struct tty *fbconstty; 131 132 static int 133 bwtwomatch_obio(parent, cf, aux) 134 struct device *parent; 135 struct cfdata *cf; 136 void *aux; 137 { 138 union obio_attach_args *uoba = aux; 139 struct obio4_attach_args *oba; 140 141 if (uoba->uoba_isobio4 == 0) 142 return (0); 143 144 oba = &uoba->uoba_oba4; 145 return (bus_space_probe(oba->oba_bustag, 0, oba->oba_paddr, 146 4, /* probe size */ 147 0, /* offset */ 148 0, /* flags */ 149 bwtwo_pfour_probe, cf)); 150 } 151 152 static void 153 bwtwoattach_obio(parent, self, uax) 154 struct device *parent, *self; 155 void *uax; 156 { 157 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 158 union obio_attach_args *uoba = uax; 159 struct obio4_attach_args *oba; 160 struct fbdevice *fb = &sc->sc_fb; 161 struct eeprom *eep = (struct eeprom *)eeprom_va; 162 bus_space_handle_t bh; 163 int constype, isconsole; 164 char *name; 165 166 oba = &uoba->uoba_oba4; 167 168 /* Remember cookies for bwtwo_mmap() */ 169 sc->sc_bustag = oba->oba_bustag; 170 sc->sc_btype = (bus_type_t)0; 171 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 172 173 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 174 fb->fb_type.fb_depth = 1; 175 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 176 177 constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW; 178 if (eep == NULL || eep->eeConsole == constype) 179 isconsole = (fbconstty != NULL); 180 else 181 isconsole = 0; 182 183 if (fb->fb_flags & FB_PFOUR) { 184 /* 185 * Map the pfour control register. 186 * Set pixel offset to appropriate overlay plane. 187 */ 188 name = "bwtwo/p4"; 189 190 if (obio_bus_map(oba->oba_bustag, 191 oba->oba_paddr, 192 0, 193 sizeof(u_int32_t), 194 BUS_SPACE_MAP_LINEAR, 195 0, &bh) != 0) { 196 printf("%s: cannot map pfour register\n", 197 self->dv_xname); 198 return; 199 } 200 fb->fb_pfour = (u_int32_t *)bh; 201 sc->sc_reg = NULL; 202 203 /* 204 * Notice if this is an overlay plane on a color 205 * framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY 206 * is the same as PFOUR_BW_OFF, but we use the 207 * different names anyway. 208 */ 209 switch (PFOUR_ID(*fb->fb_pfour)) { 210 case PFOUR_ID_COLOR8P1: 211 sc->sc_ovtype = BWO_CGFOUR; 212 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 213 break; 214 215 case PFOUR_ID_COLOR24: 216 sc->sc_ovtype = BWO_CGEIGHT; 217 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 218 break; 219 220 default: 221 sc->sc_ovtype = BWO_NONE; 222 sc->sc_pixeloffset = PFOUR_BW_OFF; 223 break; 224 } 225 226 } else { 227 /* A plain bwtwo */ 228 if (obio_bus_map(oba->oba_bustag, 229 oba->oba_paddr, 230 BWREG_REG, 231 sizeof(struct fbcontrol), 232 BUS_SPACE_MAP_LINEAR, 233 0, &bh) != 0) { 234 printf("%s: cannot map control registers\n", 235 self->dv_xname); 236 return; 237 } 238 sc->sc_reg = (struct fbcontrol *)bh; 239 fb->fb_pfour = NULL; 240 241 name = "bwtwo"; 242 sc->sc_pixeloffset = BWREG_MEM; 243 } 244 sc->sc_get_video = bwtwo_get_video_sun4; 245 sc->sc_set_video = bwtwo_set_video_sun4; 246 247 if (isconsole) { 248 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 249 if (obio_bus_map(oba->oba_bustag, oba->oba_paddr, 250 sc->sc_pixeloffset, 251 ramsize, 252 BUS_SPACE_MAP_LINEAR, 253 0, &bh) != 0) { 254 printf("%s: cannot map pixels\n", self->dv_xname); 255 return; 256 } 257 sc->sc_fb.fb_pixels = (char *)bh; 258 } 259 260 bwtwoattach(sc, name, isconsole, 1); 261 } 262 263 static void 264 bwtwo_set_video_sun4(sc, enable) 265 struct bwtwo_softc *sc; 266 int enable; 267 { 268 269 if (sc->sc_fb.fb_flags & FB_PFOUR) { 270 /* 271 * This handles the overlay plane case, too. 272 */ 273 fb_pfour_set_video(&sc->sc_fb, enable); 274 return; 275 } 276 if (enable) 277 stba(AC_SYSENABLE, ASI_CONTROL, 278 lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO); 279 else 280 stba(AC_SYSENABLE, ASI_CONTROL, 281 lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO); 282 283 return; 284 } 285 286 static int 287 bwtwo_get_video_sun4(sc) 288 struct bwtwo_softc *sc; 289 { 290 291 if (sc->sc_fb.fb_flags & FB_PFOUR) { 292 /* 293 * This handles the overlay plane case, too. 294 */ 295 return (fb_pfour_get_video(&sc->sc_fb)); 296 } else 297 return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0); 298 } 299
Indexes created Mon Oct 13 14:09:54 GMT 2025