grf_obio.c revision 1.36
1 /* $NetBSD: grf_obio.c,v 1.36 1998/08/12 02:36:38 scottr 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 "opt_grf.h" 63 64 #include <sys/param.h> 65 #include <sys/device.h> 66 #include <sys/ioctl.h> 67 #include <sys/file.h> 68 #include <sys/malloc.h> 69 #include <sys/mman.h> 70 #include <sys/proc.h> 71 #include <sys/systm.h> 72 73 #include <machine/autoconf.h> 74 #include <machine/bus.h> 75 #include <machine/cpu.h> 76 #include <machine/grfioctl.h> 77 #include <machine/viareg.h> 78 79 #include <mac68k/nubus/nubus.h> 80 #include <mac68k/obio/obiovar.h> 81 #include <mac68k/dev/grfvar.h> 82 83 extern u_int32_t mac68k_vidphys; 84 extern u_int32_t mac68k_vidlen; 85 extern long videoaddr; 86 extern long videorowbytes; 87 extern long videobitdepth; 88 extern u_long videosize; 89 90 static int grfiv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 91 static int grfiv_match __P((struct device *, struct cfdata *, void *)); 92 static void grfiv_attach __P((struct device *, struct device *, void *)); 93 94 struct cfattach intvid_ca = { 95 sizeof(struct grfbus_softc), grfiv_match, grfiv_attach 96 }; 97 98 #define DAFB_BASE 0xf9000000 99 #define DAFB_CONTROL_BASE 0xf9800000 100 #define CIVIC_BASE 0x50100000 101 #define CIVIC_CONTROL_BASE 0x50036000 102 #define VALKYRIE_BASE 0xf9000000 103 #define VALKYRIE_CONTROL_BASE 0x50f2a000 104 105 static int 106 grfiv_match(parent, cf, aux) 107 struct device *parent; 108 struct cfdata *cf; 109 void *aux; 110 { 111 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 112 bus_space_handle_t bsh; 113 int found; 114 u_int base; 115 116 found = 1; 117 118 switch (current_mac_model->class) { 119 case MACH_CLASSQ2: 120 if (current_mac_model->machineid != MACH_MACLC575) { 121 base = VALKYRIE_CONTROL_BASE; 122 123 if (bus_space_map(oa->oa_tag, base, 0x40, 0, &bsh)) 124 return 0; 125 126 /* Disable interrupts */ 127 bus_space_write_1(oa->oa_tag, bsh, 0x18, 0x1); 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, 0x1000, 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, 0x1000); 151 return 0; 152 } 153 154 /* Set "Turbo SCSI" configuration to default */ 155 bus_space_write_4(oa->oa_tag, bsh, 0x24, 0x1d1); /* ch0 */ 156 bus_space_write_4(oa->oa_tag, bsh, 0x28, 0x1d1); /* ch1 */ 157 158 /* Disable interrupts */ 159 bus_space_write_4(oa->oa_tag, bsh, 0x104, 0); 160 161 /* Clear any interrupts */ 162 bus_space_write_4(oa->oa_tag, bsh, 0x10C, 0); 163 bus_space_write_4(oa->oa_tag, bsh, 0x110, 0); 164 bus_space_write_4(oa->oa_tag, bsh, 0x114, 0); 165 166 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 167 break; 168 case MACH_CLASSAV: 169 base = CIVIC_CONTROL_BASE; 170 171 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) 172 return 0; 173 174 /* Disable interrupts */ 175 bus_space_write_1(oa->oa_tag, bsh, 0x120, 0); 176 177 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 178 break; 179 default: 180 if (mac68k_vidlen == 0) 181 found = 0; 182 break; 183 } 184 185 return found; 186 } 187 188 static void 189 grfiv_attach(parent, self, aux) 190 struct device *parent, *self; 191 void *aux; 192 { 193 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 194 struct grfbus_softc *sc; 195 struct grfmode *gm; 196 u_long base, length; 197 u_int32_t vbase1, vbase2; 198 199 sc = (struct grfbus_softc *)self; 200 201 sc->card_id = 0; 202 203 switch (current_mac_model->class) { 204 case MACH_CLASSQ2: 205 if (current_mac_model->machineid == MACH_MACQ630) { 206 printf(": Valkyrie video subsystem\n"); 207 sc->sc_basepa = VALKYRIE_BASE; 208 length = 0x00100000; /* 1MB */ 209 210 if (sc->sc_basepa <= mac68k_vidphys && 211 mac68k_vidphys < (sc->sc_basepa + length)) 212 sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa; 213 else 214 sc->sc_fbofs = 0; 215 216 printf(" @ %lx: Valkyrie video subsystem\n", 217 sc->sc_basepa + sc->sc_fbofs); 218 break; 219 } 220 /* See note in grfiv_match() */ 221 /*FALLTHROUGH*/ 222 case MACH_CLASSQ: 223 base = DAFB_CONTROL_BASE; 224 sc->sc_tag = oa->oa_tag; 225 if (bus_space_map(sc->sc_tag, base, 0x1000, 0, &sc->sc_regh)) { 226 printf(": failed to map DAFB register space\n"); 227 return; 228 } 229 230 sc->sc_basepa = DAFB_BASE; 231 length = 0x00100000; /* 1MB */ 232 233 /* Compute the current frame buffer offset */ 234 vbase1 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x0) & 0xfff; 235 vbase2 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x4) & 0xf; 236 sc->sc_fbofs = (vbase1 << 9) | (vbase2 << 5); 237 switch (current_mac_model->machineid) { /* XXX */ 238 case MACH_MACLC475: /* XXX */ 239 case MACH_MACLC475_33: /* XXX */ 240 case MACH_MACLC575: /* XXX */ 241 case MACH_MACP580: /* XXX */ 242 /* A guess... ? */ /* XXX */ 243 sc->sc_fbofs = 0x1000; /* XXX */ 244 break; /* XXX */ 245 } /* XXX */ 246 247 printf(" @ %lx: DAFB video subsystem, monitor sense %x\n", 248 sc->sc_basepa + sc->sc_fbofs, 249 (bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x1c) & 0x7)); 250 251 bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x1000); 252 break; 253 case MACH_CLASSAV: 254 sc->sc_basepa = CIVIC_BASE; 255 length = 0x00200000; /* 2MB */ 256 257 if (sc->sc_basepa <= mac68k_vidphys && 258 mac68k_vidphys < (sc->sc_basepa + length)) 259 sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa; 260 else 261 sc->sc_fbofs = 0; 262 263 printf(" @ %lx: Civic video subsystem\n", 264 sc->sc_basepa + sc->sc_fbofs); 265 break; 266 default: 267 sc->sc_basepa = m68k_trunc_page(mac68k_vidphys); 268 sc->sc_fbofs = mac68k_vidphys & PGOFSET; 269 length = mac68k_vidlen + sc->sc_fbofs; 270 271 printf(" @ %lx: On-board video\n", 272 sc->sc_basepa + sc->sc_fbofs); 273 break; 274 } 275 276 if (bus_space_map(sc->sc_tag, sc->sc_basepa, length, 0, 277 &sc->sc_handle)) { 278 printf("%s: failed to map video RAM\n", sc->sc_dev.dv_xname); 279 return; 280 } 281 282 if (sc->sc_basepa <= mac68k_vidphys && 283 mac68k_vidphys < (sc->sc_basepa + length)) 284 videoaddr = sc->sc_handle + sc->sc_fbofs; /* XXX big ol' hack */ 285 286 gm = &(sc->curr_mode); 287 gm->mode_id = 0; 288 gm->psize = videobitdepth; 289 gm->ptype = 0; 290 gm->width = videosize & 0xffff; 291 gm->height = (videosize >> 16) & 0xffff; 292 gm->rowbytes = videorowbytes; 293 gm->hres = 80; /* XXX hack */ 294 gm->vres = 80; /* XXX hack */ 295 gm->fbsize = gm->height * gm->rowbytes; 296 gm->fbbase = (caddr_t)sc->sc_handle; /* XXX yet another hack */ 297 gm->fboff = sc->sc_fbofs; 298 299 /* Perform common video attachment. */ 300 grf_establish(sc, NULL, grfiv_mode); 301 } 302 303 static int 304 grfiv_mode(sc, cmd, arg) 305 struct grf_softc *sc; 306 int cmd; 307 void *arg; 308 { 309 switch (cmd) { 310 case GM_GRFON: 311 case GM_GRFOFF: 312 return 0; 313 case GM_CURRMODE: 314 break; 315 case GM_NEWMODE: 316 break; 317 case GM_LISTMODES: 318 break; 319 } 320 return EINVAL; 321 } 322
Indexes created Mon Oct 20 11:09:49 GMT 2025