grf_obio.c revision 1.48
1 /* $NetBSD: grf_obio.c,v 1.48 2002/09/27 20:33:27 thorpej Exp $ */ 2 3 /* 4 * Copyright (C) 1998 Scott Reynolds 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 /* 30 * Copyright (c) 1995 Allen Briggs. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by Allen Briggs. 43 * 4. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 /* 58 * Graphics display driver for the Macintosh internal video for machines 59 * that don't map it into a fake nubus card. 60 */ 61 62 #include <sys/param.h> 63 #include <sys/device.h> 64 #include <sys/ioctl.h> 65 #include <sys/file.h> 66 #include <sys/malloc.h> 67 #include <sys/mman.h> 68 #include <sys/proc.h> 69 #include <sys/systm.h> 70 71 #include <machine/autoconf.h> 72 #include <machine/bus.h> 73 #include <machine/cpu.h> 74 #include <machine/grfioctl.h> 75 #include <machine/viareg.h> 76 77 #include <mac68k/nubus/nubus.h> 78 #include <mac68k/obio/obiovar.h> 79 #include <mac68k/dev/grfvar.h> 80 81 extern u_int32_t mac68k_vidphys; 82 extern u_int32_t mac68k_vidlen; 83 extern long videoaddr; 84 extern long videorowbytes; 85 extern long videobitdepth; 86 extern u_long videosize; 87 88 static int grfiv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 89 static int grfiv_match __P((struct device *, struct cfdata *, void *)); 90 static void grfiv_attach __P((struct device *, struct device *, void *)); 91 92 const struct cfattach intvid_ca = { 93 sizeof(struct grfbus_softc), grfiv_match, grfiv_attach 94 }; 95 96 #define DAFB_BASE 0xf9000000 97 #define DAFB_CONTROL_BASE 0xf9800000 98 #define CIVIC_BASE 0x50100000 99 #define CIVIC_CONTROL_BASE 0x50036000 100 #define VALKYRIE_BASE 0xf9000000 101 #define VALKYRIE_CONTROL_BASE 0x50f2a000 102 103 static int 104 grfiv_match(parent, cf, aux) 105 struct device *parent; 106 struct cfdata *cf; 107 void *aux; 108 { 109 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 110 bus_space_handle_t bsh; 111 int found; 112 u_int base; 113 114 found = 1; 115 116 switch (current_mac_model->class) { 117 case MACH_CLASSQ2: 118 if (current_mac_model->machineid != MACH_MACLC575) { 119 base = VALKYRIE_CONTROL_BASE; 120 121 if (bus_space_map(oa->oa_tag, base, 0x40, 0, &bsh)) 122 return 0; 123 124 /* Disable interrupts */ 125 bus_space_write_1(oa->oa_tag, bsh, 0x18, 0x1); 126 127 bus_space_unmap(oa->oa_tag, bsh, 0x40); 128 break; 129 } 130 /* 131 * Note: the only system in this class that does not have 132 * the Valkyrie chip -- at least, that we know of -- is 133 * the Performa/LC 57x series. This system has a version 134 * of the DAFB controller, instead. 135 * 136 * If this assumption proves false, we'll have to be more 137 * intelligent here. 138 */ 139 /*FALLTHROUGH*/ 140 case MACH_CLASSQ: 141 /* 142 * Assume DAFB for all of these, unless we can't 143 * access the memory. 144 */ 145 base = DAFB_CONTROL_BASE; 146 147 if (bus_space_map(oa->oa_tag, base, 0x20, 0, &bsh)) 148 return 0; 149 150 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1c, 4) == 0) { 151 bus_space_unmap(oa->oa_tag, bsh, 0x20); 152 return 0; 153 } 154 155 bus_space_unmap(oa->oa_tag, bsh, 0x20); 156 157 if (bus_space_map(oa->oa_tag, base + 0x100, 0x20, 0, &bsh)) 158 return 0; 159 160 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x04, 4) == 0) { 161 bus_space_unmap(oa->oa_tag, bsh, 0x20); 162 return 0; 163 } 164 165 /* Disable interrupts */ 166 bus_space_write_4(oa->oa_tag, bsh, 0x04, 0); 167 168 /* Clear any interrupts */ 169 bus_space_write_4(oa->oa_tag, bsh, 0x0C, 0); 170 bus_space_write_4(oa->oa_tag, bsh, 0x10, 0); 171 bus_space_write_4(oa->oa_tag, bsh, 0x14, 0); 172 173 bus_space_unmap(oa->oa_tag, bsh, 0x20); 174 break; 175 case MACH_CLASSAV: 176 base = CIVIC_CONTROL_BASE; 177 178 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) 179 return 0; 180 181 /* Disable interrupts */ 182 bus_space_write_1(oa->oa_tag, bsh, 0x120, 0); 183 184 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 185 break; 186 case MACH_CLASSIIci: 187 case MACH_CLASSIIsi: 188 if (mac68k_vidlen == 0 || 189 (via2_reg(rMonitor) & RBVMonitorMask) == RBVMonIDNone) 190 found = 0; 191 break; 192 default: 193 if (mac68k_vidlen == 0) 194 found = 0; 195 break; 196 } 197 198 return found; 199 } 200 201 static void 202 grfiv_attach(parent, self, aux) 203 struct device *parent, *self; 204 void *aux; 205 { 206 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 207 struct grfbus_softc *sc; 208 struct grfmode *gm; 209 u_long base, length; 210 u_int32_t vbase1, vbase2; 211 212 sc = (struct grfbus_softc *)self; 213 214 sc->card_id = 0; 215 216 switch (current_mac_model->class) { 217 case MACH_CLASSQ2: 218 if (current_mac_model->machineid != MACH_MACLC575) { 219 sc->sc_basepa = VALKYRIE_BASE; 220 length = 0x00100000; /* 1MB */ 221 222 if (sc->sc_basepa <= mac68k_vidphys && 223 mac68k_vidphys < (sc->sc_basepa + length)) { 224 sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa; 225 } else { 226 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 227 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 228 length = mac68k_vidlen + sc->sc_fbofs; 229 } 230 231 printf(" @ %lx: Valkyrie video subsystem\n", 232 sc->sc_basepa + sc->sc_fbofs); 233 break; 234 } 235 /* See note in grfiv_match() */ 236 /*FALLTHROUGH*/ 237 case MACH_CLASSQ: 238 base = DAFB_CONTROL_BASE; 239 sc->sc_tag = oa->oa_tag; 240 if (bus_space_map(sc->sc_tag, base, 0x20, 0, &sc->sc_regh)) { 241 printf(": failed to map DAFB register space\n"); 242 return; 243 } 244 245 sc->sc_basepa = DAFB_BASE; 246 length = 0x00100000; /* 1MB */ 247 248 /* Compute the current frame buffer offset */ 249 vbase1 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x0) & 0xfff; 250 #if 1 251 /* 252 * XXX The following exists because the DAFB v7 in these 253 * systems doesn't return reasonable values to use for fbofs. 254 * Ken'ichi Ishizaka gets credit for this hack. (sar 19990426) 255 * (Does this get us the correct result for _all_ DAFB- 256 * equipped systems and monitor combinations? It seems 257 * possible, if not likely...) 258 */ 259 switch (current_mac_model->machineid) { 260 case MACH_MACLC475: 261 case MACH_MACLC475_33: 262 case MACH_MACLC575: 263 case MACH_MACQ605: 264 case MACH_MACQ605_33: 265 vbase1 &= 0x3f; 266 break; 267 } 268 #endif 269 vbase2 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x4) & 0xf; 270 sc->sc_fbofs = (vbase1 << 9) | (vbase2 << 5); 271 272 printf(" @ %lx: DAFB video subsystem, monitor sense %x\n", 273 sc->sc_basepa + sc->sc_fbofs, 274 (bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x1c) & 0x7)); 275 276 bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x20); 277 break; 278 case MACH_CLASSAV: 279 sc->sc_basepa = CIVIC_BASE; 280 length = 0x00200000; /* 2MB */ 281 if (mac68k_vidphys >= sc->sc_basepa && 282 mac68k_vidphys < (sc->sc_basepa + length)) { 283 sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa; 284 } else { 285 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 286 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 287 length = mac68k_vidlen + sc->sc_fbofs; 288 } 289 290 printf(" @ %lx: CIVIC video subsystem\n", 291 sc->sc_basepa + sc->sc_fbofs); 292 break; 293 case MACH_CLASSIIci: 294 case MACH_CLASSIIsi: 295 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 296 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 297 length = mac68k_vidlen + sc->sc_fbofs; 298 299 printf(" @ %lx: RBV video subsystem, ", 300 sc->sc_basepa + sc->sc_fbofs); 301 switch (via2_reg(rMonitor) & RBVMonitorMask) { 302 case RBVMonIDBWP: 303 printf("15\" monochrome portrait"); 304 break; 305 case RBVMonIDRGB12: 306 printf("12\" color"); 307 break; 308 case RBVMonIDRGB15: 309 printf("15\" color"); 310 break; 311 case RBVMonIDStd: 312 printf("Macintosh II"); 313 break; 314 default: 315 printf("unrecognized"); 316 break; 317 } 318 printf(" display\n"); 319 320 break; 321 default: 322 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 323 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 324 length = mac68k_vidlen + sc->sc_fbofs; 325 326 printf(" @ %lx: On-board video\n", 327 sc->sc_basepa + sc->sc_fbofs); 328 break; 329 } 330 331 if (bus_space_map(sc->sc_tag, sc->sc_basepa, length, 0, 332 &sc->sc_handle)) { 333 printf("%s: failed to map video RAM\n", sc->sc_dev.dv_xname); 334 return; 335 } 336 337 if (sc->sc_basepa <= mac68k_vidphys && 338 mac68k_vidphys < (sc->sc_basepa + length)) 339 videoaddr = sc->sc_handle.base + sc->sc_fbofs; /* XXX hack */ 340 341 gm = &(sc->curr_mode); 342 gm->mode_id = 0; 343 gm->psize = videobitdepth; 344 gm->ptype = 0; 345 gm->width = videosize & 0xffff; 346 gm->height = (videosize >> 16) & 0xffff; 347 gm->rowbytes = videorowbytes; 348 gm->hres = 80; /* XXX hack */ 349 gm->vres = 80; /* XXX hack */ 350 gm->fbsize = gm->height * gm->rowbytes; 351 gm->fbbase = (caddr_t)sc->sc_handle.base; /* XXX yet another hack */ 352 gm->fboff = sc->sc_fbofs; 353 354 /* Perform common video attachment. */ 355 grf_establish(sc, NULL, grfiv_mode); 356 } 357 358 static int 359 grfiv_mode(sc, cmd, arg) 360 struct grf_softc *sc; 361 int cmd; 362 void *arg; 363 { 364 switch (cmd) { 365 case GM_GRFON: 366 case GM_GRFOFF: 367 return 0; 368 case GM_CURRMODE: 369 break; 370 case GM_NEWMODE: 371 break; 372 case GM_LISTMODES: 373 break; 374 } 375 return EINVAL; 376 } 377
Indexes created Mon Oct 20 11:09:49 GMT 2025