grf_obio.c revision 1.49
1 /* $NetBSD: grf_obio.c,v 1.49 2002/10/02 05:36:39 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 CFATTACH_DECL(intvid, sizeof(struct grfbus_softc), 93 grfiv_match, grfiv_attach, NULL, NULL); 94 95 #define DAFB_BASE 0xf9000000 96 #define DAFB_CONTROL_BASE 0xf9800000 97 #define CIVIC_BASE 0x50100000 98 #define CIVIC_CONTROL_BASE 0x50036000 99 #define VALKYRIE_BASE 0xf9000000 100 #define VALKYRIE_CONTROL_BASE 0x50f2a000 101 102 static int 103 grfiv_match(parent, cf, aux) 104 struct device *parent; 105 struct cfdata *cf; 106 void *aux; 107 { 108 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 109 bus_space_handle_t bsh; 110 int found; 111 u_int base; 112 113 found = 1; 114 115 switch (current_mac_model->class) { 116 case MACH_CLASSQ2: 117 if (current_mac_model->machineid != MACH_MACLC575) { 118 base = VALKYRIE_CONTROL_BASE; 119 120 if (bus_space_map(oa->oa_tag, base, 0x40, 0, &bsh)) 121 return 0; 122 123 /* Disable interrupts */ 124 bus_space_write_1(oa->oa_tag, bsh, 0x18, 0x1); 125 126 bus_space_unmap(oa->oa_tag, bsh, 0x40); 127 break; 128 } 129 /* 130 * Note: the only system in this class that does not have 131 * the Valkyrie chip -- at least, that we know of -- is 132 * the Performa/LC 57x series. This system has a version 133 * of the DAFB controller, instead. 134 * 135 * If this assumption proves false, we'll have to be more 136 * intelligent here. 137 */ 138 /*FALLTHROUGH*/ 139 case MACH_CLASSQ: 140 /* 141 * Assume DAFB for all of these, unless we can't 142 * access the memory. 143 */ 144 base = DAFB_CONTROL_BASE; 145 146 if (bus_space_map(oa->oa_tag, base, 0x20, 0, &bsh)) 147 return 0; 148 149 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1c, 4) == 0) { 150 bus_space_unmap(oa->oa_tag, bsh, 0x20); 151 return 0; 152 } 153 154 bus_space_unmap(oa->oa_tag, bsh, 0x20); 155 156 if (bus_space_map(oa->oa_tag, base + 0x100, 0x20, 0, &bsh)) 157 return 0; 158 159 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x04, 4) == 0) { 160 bus_space_unmap(oa->oa_tag, bsh, 0x20); 161 return 0; 162 } 163 164 /* Disable interrupts */ 165 bus_space_write_4(oa->oa_tag, bsh, 0x04, 0); 166 167 /* Clear any interrupts */ 168 bus_space_write_4(oa->oa_tag, bsh, 0x0C, 0); 169 bus_space_write_4(oa->oa_tag, bsh, 0x10, 0); 170 bus_space_write_4(oa->oa_tag, bsh, 0x14, 0); 171 172 bus_space_unmap(oa->oa_tag, bsh, 0x20); 173 break; 174 case MACH_CLASSAV: 175 base = CIVIC_CONTROL_BASE; 176 177 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) 178 return 0; 179 180 /* Disable interrupts */ 181 bus_space_write_1(oa->oa_tag, bsh, 0x120, 0); 182 183 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 184 break; 185 case MACH_CLASSIIci: 186 case MACH_CLASSIIsi: 187 if (mac68k_vidlen == 0 || 188 (via2_reg(rMonitor) & RBVMonitorMask) == RBVMonIDNone) 189 found = 0; 190 break; 191 default: 192 if (mac68k_vidlen == 0) 193 found = 0; 194 break; 195 } 196 197 return found; 198 } 199 200 static void 201 grfiv_attach(parent, self, aux) 202 struct device *parent, *self; 203 void *aux; 204 { 205 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 206 struct grfbus_softc *sc; 207 struct grfmode *gm; 208 u_long base, length; 209 u_int32_t vbase1, vbase2; 210 211 sc = (struct grfbus_softc *)self; 212 213 sc->card_id = 0; 214 215 switch (current_mac_model->class) { 216 case MACH_CLASSQ2: 217 if (current_mac_model->machineid != MACH_MACLC575) { 218 sc->sc_basepa = VALKYRIE_BASE; 219 length = 0x00100000; /* 1MB */ 220 221 if (sc->sc_basepa <= mac68k_vidphys && 222 mac68k_vidphys < (sc->sc_basepa + length)) { 223 sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa; 224 } else { 225 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 226 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 227 length = mac68k_vidlen + sc->sc_fbofs; 228 } 229 230 printf(" @ %lx: Valkyrie video subsystem\n", 231 sc->sc_basepa + sc->sc_fbofs); 232 break; 233 } 234 /* See note in grfiv_match() */ 235 /*FALLTHROUGH*/ 236 case MACH_CLASSQ: 237 base = DAFB_CONTROL_BASE; 238 sc->sc_tag = oa->oa_tag; 239 if (bus_space_map(sc->sc_tag, base, 0x20, 0, &sc->sc_regh)) { 240 printf(": failed to map DAFB register space\n"); 241 return; 242 } 243 244 sc->sc_basepa = DAFB_BASE; 245 length = 0x00100000; /* 1MB */ 246 247 /* Compute the current frame buffer offset */ 248 vbase1 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x0) & 0xfff; 249 #if 1 250 /* 251 * XXX The following exists because the DAFB v7 in these 252 * systems doesn't return reasonable values to use for fbofs. 253 * Ken'ichi Ishizaka gets credit for this hack. (sar 19990426) 254 * (Does this get us the correct result for _all_ DAFB- 255 * equipped systems and monitor combinations? It seems 256 * possible, if not likely...) 257 */ 258 switch (current_mac_model->machineid) { 259 case MACH_MACLC475: 260 case MACH_MACLC475_33: 261 case MACH_MACLC575: 262 case MACH_MACQ605: 263 case MACH_MACQ605_33: 264 vbase1 &= 0x3f; 265 break; 266 } 267 #endif 268 vbase2 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x4) & 0xf; 269 sc->sc_fbofs = (vbase1 << 9) | (vbase2 << 5); 270 271 printf(" @ %lx: DAFB video subsystem, monitor sense %x\n", 272 sc->sc_basepa + sc->sc_fbofs, 273 (bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x1c) & 0x7)); 274 275 bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x20); 276 break; 277 case MACH_CLASSAV: 278 sc->sc_basepa = CIVIC_BASE; 279 length = 0x00200000; /* 2MB */ 280 if (mac68k_vidphys >= sc->sc_basepa && 281 mac68k_vidphys < (sc->sc_basepa + length)) { 282 sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa; 283 } else { 284 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 285 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 286 length = mac68k_vidlen + sc->sc_fbofs; 287 } 288 289 printf(" @ %lx: CIVIC video subsystem\n", 290 sc->sc_basepa + sc->sc_fbofs); 291 break; 292 case MACH_CLASSIIci: 293 case MACH_CLASSIIsi: 294 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 295 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 296 length = mac68k_vidlen + sc->sc_fbofs; 297 298 printf(" @ %lx: RBV video subsystem, ", 299 sc->sc_basepa + sc->sc_fbofs); 300 switch (via2_reg(rMonitor) & RBVMonitorMask) { 301 case RBVMonIDBWP: 302 printf("15\" monochrome portrait"); 303 break; 304 case RBVMonIDRGB12: 305 printf("12\" color"); 306 break; 307 case RBVMonIDRGB15: 308 printf("15\" color"); 309 break; 310 case RBVMonIDStd: 311 printf("Macintosh II"); 312 break; 313 default: 314 printf("unrecognized"); 315 break; 316 } 317 printf(" display\n"); 318 319 break; 320 default: 321 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 322 sc->sc_fbofs = m68k_page_offset(mac68k_vidphys); 323 length = mac68k_vidlen + sc->sc_fbofs; 324 325 printf(" @ %lx: On-board video\n", 326 sc->sc_basepa + sc->sc_fbofs); 327 break; 328 } 329 330 if (bus_space_map(sc->sc_tag, sc->sc_basepa, length, 0, 331 &sc->sc_handle)) { 332 printf("%s: failed to map video RAM\n", sc->sc_dev.dv_xname); 333 return; 334 } 335 336 if (sc->sc_basepa <= mac68k_vidphys && 337 mac68k_vidphys < (sc->sc_basepa + length)) 338 videoaddr = sc->sc_handle.base + sc->sc_fbofs; /* XXX hack */ 339 340 gm = &(sc->curr_mode); 341 gm->mode_id = 0; 342 gm->psize = videobitdepth; 343 gm->ptype = 0; 344 gm->width = videosize & 0xffff; 345 gm->height = (videosize >> 16) & 0xffff; 346 gm->rowbytes = videorowbytes; 347 gm->hres = 80; /* XXX hack */ 348 gm->vres = 80; /* XXX hack */ 349 gm->fbsize = gm->height * gm->rowbytes; 350 gm->fbbase = (caddr_t)sc->sc_handle.base; /* XXX yet another hack */ 351 gm->fboff = sc->sc_fbofs; 352 353 /* Perform common video attachment. */ 354 grf_establish(sc, NULL, grfiv_mode); 355 } 356 357 static int 358 grfiv_mode(sc, cmd, arg) 359 struct grf_softc *sc; 360 int cmd; 361 void *arg; 362 { 363 switch (cmd) { 364 case GM_GRFON: 365 case GM_GRFOFF: 366 return 0; 367 case GM_CURRMODE: 368 break; 369 case GM_NEWMODE: 370 break; 371 case GM_LISTMODES: 372 break; 373 } 374 return EINVAL; 375 } 376
Indexes created Mon Oct 20 05:10:11 GMT 2025