bwtwo_obio.c revision 1.4.4.1
1 /* $NetBSD: bwtwo_obio.c,v 1.4.4.1 2002/03/16 15:59:45 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/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/ctlreg.h> 104 #include <machine/conf.h> 105 #include <sparc/sparc/asm.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 /* autoconfiguration driver */ 115 static void bwtwoattach_obio (struct device *, struct device *, void *); 116 static int bwtwomatch_obio (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(struct bwtwo_softc *); 124 static void bwtwo_set_video_sun4(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, 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_paddr = (bus_addr_t)oba->oba_paddr; 167 168 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 169 fb->fb_type.fb_depth = 1; 170 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 171 172 constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW; 173 if (eep == NULL || eep->eeConsole == constype) 174 isconsole = fb_is_console(0); 175 else 176 isconsole = 0; 177 178 if (fb->fb_flags & FB_PFOUR) { 179 /* 180 * Map the pfour control register. 181 * Set pixel offset to appropriate overlay plane. 182 */ 183 name = "bwtwo/p4"; 184 185 if (bus_space_map(oba->oba_bustag, 186 oba->oba_paddr, 187 sizeof(u_int32_t), 188 BUS_SPACE_MAP_LINEAR, 189 &bh) != 0) { 190 printf("%s: cannot map pfour register\n", 191 self->dv_xname); 192 return; 193 } 194 fb->fb_pfour = (u_int32_t *)bh; 195 sc->sc_reg = NULL; 196 197 /* 198 * Notice if this is an overlay plane on a color 199 * framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY 200 * is the same as PFOUR_BW_OFF, but we use the 201 * different names anyway. 202 */ 203 switch (PFOUR_ID(*fb->fb_pfour)) { 204 case PFOUR_ID_COLOR8P1: 205 sc->sc_ovtype = BWO_CGFOUR; 206 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 207 break; 208 209 case PFOUR_ID_COLOR24: 210 sc->sc_ovtype = BWO_CGEIGHT; 211 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 212 break; 213 214 default: 215 sc->sc_ovtype = BWO_NONE; 216 sc->sc_pixeloffset = PFOUR_BW_OFF; 217 break; 218 } 219 220 } else { 221 /* A plain bwtwo */ 222 if (bus_space_map(oba->oba_bustag, 223 oba->oba_paddr + BWREG_REG, 224 sizeof(struct fbcontrol), 225 BUS_SPACE_MAP_LINEAR, 226 &bh) != 0) { 227 printf("%s: cannot map control registers\n", 228 self->dv_xname); 229 return; 230 } 231 sc->sc_reg = (struct fbcontrol *)bh; 232 fb->fb_pfour = NULL; 233 234 name = "bwtwo"; 235 sc->sc_pixeloffset = BWREG_MEM; 236 } 237 sc->sc_get_video = bwtwo_get_video_sun4; 238 sc->sc_set_video = bwtwo_set_video_sun4; 239 240 if (isconsole) { 241 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 242 if (bus_space_map(oba->oba_bustag, 243 oba->oba_paddr + sc->sc_pixeloffset, 244 ramsize, 245 BUS_SPACE_MAP_LINEAR, 246 &bh) != 0) { 247 printf("%s: cannot map pixels\n", self->dv_xname); 248 return; 249 } 250 sc->sc_fb.fb_pixels = (char *)bh; 251 } 252 253 bwtwoattach(sc, name, isconsole); 254 } 255 256 static void 257 bwtwo_set_video_sun4(sc, enable) 258 struct bwtwo_softc *sc; 259 int enable; 260 { 261 262 if (sc->sc_fb.fb_flags & FB_PFOUR) { 263 /* 264 * This handles the overlay plane case, too. 265 */ 266 fb_pfour_set_video(&sc->sc_fb, enable); 267 return; 268 } 269 if (enable) 270 stba(AC_SYSENABLE, ASI_CONTROL, 271 lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO); 272 else 273 stba(AC_SYSENABLE, ASI_CONTROL, 274 lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO); 275 276 return; 277 } 278 279 static int 280 bwtwo_get_video_sun4(sc) 281 struct bwtwo_softc *sc; 282 { 283 284 if (sc->sc_fb.fb_flags & FB_PFOUR) { 285 /* 286 * This handles the overlay plane case, too. 287 */ 288 return (fb_pfour_get_video(&sc->sc_fb)); 289 } else 290 return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0); 291 } 292
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