bwtwo_obio.c revision 1.4.8.3
1 /* $NetBSD: bwtwo_obio.c,v 1.4.8.3 2002/10/18 02:39:51 nathanw 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 <sparc/sparc/asm.h> 105 106 #include <dev/sun/fbio.h> 107 #include <dev/sun/fbvar.h> 108 #include <dev/sun/btreg.h> 109 #include <dev/sun/bwtworeg.h> 110 #include <dev/sun/bwtwovar.h> 111 #include <dev/sun/pfourreg.h> 112 113 /* autoconfiguration driver */ 114 static void bwtwoattach_obio (struct device *, struct device *, void *); 115 static int bwtwomatch_obio (struct device *, struct cfdata *, void *); 116 117 118 CFATTACH_DECL(bwtwo_obio, sizeof(struct bwtwo_softc), 119 bwtwomatch_obio, bwtwoattach_obio, NULL, NULL); 120 121 static int bwtwo_get_video_sun4(struct bwtwo_softc *); 122 static void bwtwo_set_video_sun4(struct bwtwo_softc *, int); 123 124 extern int fbnode; 125 126 static int 127 bwtwomatch_obio(parent, cf, aux) 128 struct device *parent; 129 struct cfdata *cf; 130 void *aux; 131 { 132 union obio_attach_args *uoba = aux; 133 struct obio4_attach_args *oba; 134 135 if (uoba->uoba_isobio4 == 0) 136 return (0); 137 138 oba = &uoba->uoba_oba4; 139 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 140 4, /* probe size */ 141 0, /* offset */ 142 0, /* flags */ 143 bwtwo_pfour_probe, cf)); 144 } 145 146 static void 147 bwtwoattach_obio(parent, self, uax) 148 struct device *parent, *self; 149 void *uax; 150 { 151 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 152 union obio_attach_args *uoba = uax; 153 struct obio4_attach_args *oba; 154 struct fbdevice *fb = &sc->sc_fb; 155 struct eeprom *eep = (struct eeprom *)eeprom_va; 156 bus_space_handle_t bh; 157 int constype, isconsole; 158 char *name; 159 160 oba = &uoba->uoba_oba4; 161 162 /* Remember cookies for bwtwo_mmap() */ 163 sc->sc_bustag = oba->oba_bustag; 164 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 165 166 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 167 fb->fb_type.fb_depth = 1; 168 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 169 170 constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW; 171 if (eep == NULL || eep->eeConsole == constype) 172 isconsole = fb_is_console(0); 173 else 174 isconsole = 0; 175 176 if (fb->fb_flags & FB_PFOUR) { 177 /* 178 * Map the pfour control register. 179 * Set pixel offset to appropriate overlay plane. 180 */ 181 name = "bwtwo/p4"; 182 183 if (bus_space_map(oba->oba_bustag, 184 oba->oba_paddr, 185 sizeof(u_int32_t), 186 BUS_SPACE_MAP_LINEAR, 187 &bh) != 0) { 188 printf("%s: cannot map pfour register\n", 189 self->dv_xname); 190 return; 191 } 192 fb->fb_pfour = (u_int32_t *)bh; 193 sc->sc_reg = NULL; 194 195 /* 196 * Notice if this is an overlay plane on a color 197 * framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY 198 * is the same as PFOUR_BW_OFF, but we use the 199 * different names anyway. 200 */ 201 switch (PFOUR_ID(*fb->fb_pfour)) { 202 case PFOUR_ID_COLOR8P1: 203 sc->sc_ovtype = BWO_CGFOUR; 204 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 205 break; 206 207 case PFOUR_ID_COLOR24: 208 sc->sc_ovtype = BWO_CGEIGHT; 209 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 210 break; 211 212 default: 213 sc->sc_ovtype = BWO_NONE; 214 sc->sc_pixeloffset = PFOUR_BW_OFF; 215 break; 216 } 217 218 } else { 219 /* A plain bwtwo */ 220 if (bus_space_map(oba->oba_bustag, 221 oba->oba_paddr + BWREG_REG, 222 sizeof(struct fbcontrol), 223 BUS_SPACE_MAP_LINEAR, 224 &bh) != 0) { 225 printf("%s: cannot map control registers\n", 226 self->dv_xname); 227 return; 228 } 229 sc->sc_reg = (struct fbcontrol *)bh; 230 fb->fb_pfour = NULL; 231 232 name = "bwtwo"; 233 sc->sc_pixeloffset = BWREG_MEM; 234 } 235 sc->sc_get_video = bwtwo_get_video_sun4; 236 sc->sc_set_video = bwtwo_set_video_sun4; 237 238 if (isconsole) { 239 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 240 if (bus_space_map(oba->oba_bustag, 241 oba->oba_paddr + sc->sc_pixeloffset, 242 ramsize, 243 BUS_SPACE_MAP_LINEAR, 244 &bh) != 0) { 245 printf("%s: cannot map pixels\n", self->dv_xname); 246 return; 247 } 248 sc->sc_fb.fb_pixels = (char *)bh; 249 } 250 251 bwtwoattach(sc, name, isconsole); 252 } 253 254 static void 255 bwtwo_set_video_sun4(sc, enable) 256 struct bwtwo_softc *sc; 257 int enable; 258 { 259 260 if (sc->sc_fb.fb_flags & FB_PFOUR) { 261 /* 262 * This handles the overlay plane case, too. 263 */ 264 fb_pfour_set_video(&sc->sc_fb, enable); 265 return; 266 } 267 if (enable) 268 stba(AC_SYSENABLE, ASI_CONTROL, 269 lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO); 270 else 271 stba(AC_SYSENABLE, ASI_CONTROL, 272 lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO); 273 274 return; 275 } 276 277 static int 278 bwtwo_get_video_sun4(sc) 279 struct bwtwo_softc *sc; 280 { 281 282 if (sc->sc_fb.fb_flags & FB_PFOUR) { 283 /* 284 * This handles the overlay plane case, too. 285 */ 286 return (fb_pfour_get_video(&sc->sc_fb)); 287 } else 288 return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0); 289 } 290
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