1 /* $NetBSD: bwtwo_obio.c,v 1.3 2000/06/29 07:40:06 mrg 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/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/fbio.h> 102 #include <machine/autoconf.h> 103 #include <machine/fbvar.h> 104 #include <machine/eeprom.h> 105 #include <machine/ctlreg.h> 106 #include <machine/conf.h> 107 #include <sparc/sparc/asm.h> 108 109 #include <sparc/dev/btreg.h> 110 #include <sparc/dev/bwtworeg.h> 111 #include <sparc/dev/bwtwovar.h> 112 #include <sparc/dev/pfourreg.h> 113 114 /* autoconfiguration driver */ 115 static void bwtwoattach_obio __P((struct device *, struct device *, void *)); 116 static int bwtwomatch_obio __P((struct device *, struct cfdata *, void *)); 117 118 119 struct cfattach bwtwo_obio_ca = { 120 sizeof(struct bwtwo_softc), bwtwomatch_obio, bwtwoattach_obio 121 }; 122 123 static int bwtwo_get_video_sun4 __P((struct bwtwo_softc *)); 124 static void bwtwo_set_video_sun4 __P((struct bwtwo_softc *, int)); 125 126 extern int fbnode; 127 128 static int 129 bwtwomatch_obio(parent, cf, aux) 130 struct device *parent; 131 struct cfdata *cf; 132 void *aux; 133 { 134 union obio_attach_args *uoba = aux; 135 struct obio4_attach_args *oba; 136 137 if (uoba->uoba_isobio4 == 0) 138 return (0); 139 140 oba = &uoba->uoba_oba4; 141 return (bus_space_probe(oba->oba_bustag, 0, oba->oba_paddr, 142 4, /* probe size */ 143 0, /* offset */ 144 0, /* flags */ 145 bwtwo_pfour_probe, cf)); 146 } 147 148 static void 149 bwtwoattach_obio(parent, self, uax) 150 struct device *parent, *self; 151 void *uax; 152 { 153 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 154 union obio_attach_args *uoba = uax; 155 struct obio4_attach_args *oba; 156 struct fbdevice *fb = &sc->sc_fb; 157 struct eeprom *eep = (struct eeprom *)eeprom_va; 158 bus_space_handle_t bh; 159 int constype, isconsole; 160 char *name; 161 162 oba = &uoba->uoba_oba4; 163 164 /* Remember cookies for bwtwo_mmap() */ 165 sc->sc_bustag = oba->oba_bustag; 166 sc->sc_btype = (bus_type_t)0; 167 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 168 169 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 170 fb->fb_type.fb_depth = 1; 171 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 172 173 constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW; 174 if (eep == NULL || eep->eeConsole == constype) 175 isconsole = fb_is_console(0); 176 else 177 isconsole = 0; 178 179 if (fb->fb_flags & FB_PFOUR) { 180 /* 181 * Map the pfour control register. 182 * Set pixel offset to appropriate overlay plane. 183 */ 184 name = "bwtwo/p4"; 185 186 if (obio_bus_map(oba->oba_bustag, 187 oba->oba_paddr, 188 0, 189 sizeof(u_int32_t), 190 BUS_SPACE_MAP_LINEAR, 191 0, &bh) != 0) { 192 printf("%s: cannot map pfour register\n", 193 self->dv_xname); 194 return; 195 } 196 fb->fb_pfour = (u_int32_t *)bh; 197 sc->sc_reg = NULL; 198 199 /* 200 * Notice if this is an overlay plane on a color 201 * framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY 202 * is the same as PFOUR_BW_OFF, but we use the 203 * different names anyway. 204 */ 205 switch (PFOUR_ID(*fb->fb_pfour)) { 206 case PFOUR_ID_COLOR8P1: 207 sc->sc_ovtype = BWO_CGFOUR; 208 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 209 break; 210 211 case PFOUR_ID_COLOR24: 212 sc->sc_ovtype = BWO_CGEIGHT; 213 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 214 break; 215 216 default: 217 sc->sc_ovtype = BWO_NONE; 218 sc->sc_pixeloffset = PFOUR_BW_OFF; 219 break; 220 } 221 222 } else { 223 /* A plain bwtwo */ 224 if (obio_bus_map(oba->oba_bustag, 225 oba->oba_paddr, 226 BWREG_REG, 227 sizeof(struct fbcontrol), 228 BUS_SPACE_MAP_LINEAR, 229 0, &bh) != 0) { 230 printf("%s: cannot map control registers\n", 231 self->dv_xname); 232 return; 233 } 234 sc->sc_reg = (struct fbcontrol *)bh; 235 fb->fb_pfour = NULL; 236 237 name = "bwtwo"; 238 sc->sc_pixeloffset = BWREG_MEM; 239 } 240 sc->sc_get_video = bwtwo_get_video_sun4; 241 sc->sc_set_video = bwtwo_set_video_sun4; 242 243 if (isconsole) { 244 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 245 if (obio_bus_map(oba->oba_bustag, oba->oba_paddr, 246 sc->sc_pixeloffset, 247 ramsize, 248 BUS_SPACE_MAP_LINEAR, 249 0, &bh) != 0) { 250 printf("%s: cannot map pixels\n", self->dv_xname); 251 return; 252 } 253 sc->sc_fb.fb_pixels = (char *)bh; 254 } 255 256 bwtwoattach(sc, name, isconsole); 257 } 258 259 static void 260 bwtwo_set_video_sun4(sc, enable) 261 struct bwtwo_softc *sc; 262 int enable; 263 { 264 265 if (sc->sc_fb.fb_flags & FB_PFOUR) { 266 /* 267 * This handles the overlay plane case, too. 268 */ 269 fb_pfour_set_video(&sc->sc_fb, enable); 270 return; 271 } 272 if (enable) 273 stba(AC_SYSENABLE, ASI_CONTROL, 274 lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO); 275 else 276 stba(AC_SYSENABLE, ASI_CONTROL, 277 lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO); 278 279 return; 280 } 281 282 static int 283 bwtwo_get_video_sun4(sc) 284 struct bwtwo_softc *sc; 285 { 286 287 if (sc->sc_fb.fb_flags & FB_PFOUR) { 288 /* 289 * This handles the overlay plane case, too. 290 */ 291 return (fb_pfour_get_video(&sc->sc_fb)); 292 } else 293 return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0); 294 } 295