Annotation of sys/arch/mac68k/dev/grf_iv.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: grf_iv.c,v 1.41 2006/03/13 22:35:17 miod Exp $ */
! 2: /* $NetBSD: grf_iv.c,v 1.17 1997/02/20 00:23:27 scottr Exp $ */
! 3:
! 4: /*
! 5: * Copyright (C) 1998 Scott Reynolds
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 29: */
! 30: /*
! 31: * Copyright (c) 1995 Allen Briggs. All rights reserved.
! 32: *
! 33: * Redistribution and use in source and binary forms, with or without
! 34: * modification, are permitted provided that the following conditions
! 35: * are met:
! 36: * 1. Redistributions of source code must retain the above copyright
! 37: * notice, this list of conditions and the following disclaimer.
! 38: * 2. Redistributions in binary form must reproduce the above copyright
! 39: * notice, this list of conditions and the following disclaimer in the
! 40: * documentation and/or other materials provided with the distribution.
! 41: * 3. All advertising materials mentioning features or use of this software
! 42: * must display the following acknowledgement:
! 43: * This product includes software developed by Allen Briggs.
! 44: * 4. The name of the author may not be used to endorse or promote products
! 45: * derived from this software without specific prior written permission.
! 46: *
! 47: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 48: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 49: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 50: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 51: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 52: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 53: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 54: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 55: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 56: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 57: */
! 58:
! 59: /*
! 60: * Graphics display driver for the Macintosh internal video for machines
! 61: * that don't map it into a fake nubus card.
! 62: */
! 63:
! 64: #include <sys/param.h>
! 65: #include <sys/device.h>
! 66: #include <sys/systm.h>
! 67: #include <sys/malloc.h>
! 68:
! 69: #include <machine/autoconf.h>
! 70: #include <machine/bus.h>
! 71: #include <machine/cpu.h>
! 72: #include <machine/viareg.h>
! 73:
! 74: #include <uvm/uvm_extern.h>
! 75:
! 76: #include <mac68k/dev/nubus.h>
! 77: #include <mac68k/dev/obiovar.h>
! 78:
! 79: #include <dev/wscons/wsdisplayvar.h>
! 80: #include <dev/rasops/rasops.h>
! 81: #include <mac68k/dev/macfbvar.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: int macfb_obio_match(struct device *, void *, void *);
! 91: void macfb_obio_attach(struct device *, struct device *, void *);
! 92:
! 93: struct cfattach macfb_obio_ca = {
! 94: sizeof(struct macfb_softc), macfb_obio_match, macfb_obio_attach
! 95: };
! 96:
! 97: #define DAFB_BASE 0xf9000000
! 98: #define DAFB_CONTROL_BASE 0xf9800000
! 99: #define DAFB_CMAP_BASE 0xf9800200
! 100: #define CIVIC_BASE 0x50100000
! 101: #define CIVIC_CONTROL_BASE 0x50036000
! 102: #define VALKYRIE_BASE 0xf9000000
! 103: #define VALKYRIE_CONTROL_BASE 0x50f2a000
! 104:
! 105: void dafb_setcolor(void *, u_int, u_int);
! 106:
! 107: int
! 108: macfb_obio_match(struct device *parent, void *vcf, void *aux)
! 109: {
! 110: struct obio_attach_args *oa = (struct obio_attach_args *)aux;
! 111: bus_space_handle_t bsh;
! 112: static int found;
! 113:
! 114: if (found != 0)
! 115: return (0);
! 116:
! 117: found = 1;
! 118:
! 119: switch (current_mac_model->class) {
! 120: case MACH_CLASSQ2:
! 121: if (current_mac_model->machineid != MACH_MACLC575)
! 122: break;
! 123:
! 124: /*
! 125: * Note: the only system in this class that does not have
! 126: * the Valkyrie chip -- at least, that we know of -- is
! 127: * the Performa/LC 57x series. This system has a version
! 128: * of the DAFB controller, instead.
! 129: *
! 130: * If this assumption proves false, we'll have to be more
! 131: * intelligent here.
! 132: */
! 133: /*FALLTHROUGH*/
! 134: case MACH_CLASSQ:
! 135: /*
! 136: * Assume DAFB for all of these, unless we can't
! 137: * access the memory.
! 138: */
! 139: if (bus_space_map(oa->oa_tag, DAFB_CONTROL_BASE, 0x120, 0,
! 140: &bsh) != 0)
! 141: return (0);
! 142:
! 143: if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1c, 4) == 0 ||
! 144: mac68k_bus_space_probe(oa->oa_tag, bsh, 0x104, 4) == 0)
! 145: found = 0;
! 146:
! 147: bus_space_unmap(oa->oa_tag, bsh, 0x120);
! 148: break;
! 149: case MACH_CLASSAV:
! 150: break;
! 151: case MACH_CLASSIIci:
! 152: case MACH_CLASSIIsi:
! 153: if (mac68k_vidlen == 0 ||
! 154: (via2_reg(rMonitor) & RBVMonitorMask) == RBVMonIDNone)
! 155: found = 0;
! 156: break;
! 157: default:
! 158: if (mac68k_vidlen == 0)
! 159: found = 0;
! 160: break;
! 161: }
! 162:
! 163: return (found);
! 164: }
! 165:
! 166: void
! 167: macfb_obio_attach(struct device *parent, struct device *self, void *aux)
! 168: {
! 169: struct obio_attach_args *oa = (struct obio_attach_args *) aux;
! 170: struct macfb_softc *sc = (struct macfb_softc *)self;
! 171: u_long length;
! 172: u_int32_t vbase1, vbase2;
! 173: struct macfb_devconfig *dc;
! 174:
! 175: sc->card_id = 0;
! 176: sc->sc_tag = oa->oa_tag;
! 177:
! 178: dc = malloc(sizeof(*dc), M_DEVBUF, M_WAITOK);
! 179: bzero(dc, sizeof(*dc));
! 180:
! 181: switch (current_mac_model->class) {
! 182: case MACH_CLASSQ2:
! 183: if (current_mac_model->machineid != MACH_MACLC575) {
! 184: sc->sc_basepa = VALKYRIE_BASE;
! 185: length = 0x00100000; /* 1MB */
! 186:
! 187: if (sc->sc_basepa <= mac68k_vidphys &&
! 188: mac68k_vidphys < (sc->sc_basepa + length))
! 189: sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa;
! 190: else
! 191: sc->sc_fbofs = 0;
! 192:
! 193: #ifdef DEBUG
! 194: printf(" @ %lx", sc->sc_basepa + sc->sc_fbofs);
! 195: #endif
! 196:
! 197: if (bus_space_map(sc->sc_tag, VALKYRIE_CONTROL_BASE,
! 198: 0x40, 0, &sc->sc_regh) != 0) {
! 199: printf(": can't map Valkyrie registers\n");
! 200: free(dc, M_DEVBUF);
! 201: return;
! 202: }
! 203: /* Disable interrupts */
! 204: bus_space_write_1(sc->sc_tag, sc->sc_regh, 0x18, 0x1);
! 205: bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x40);
! 206:
! 207: printf(": Valkyrie\n");
! 208: break;
! 209: }
! 210: /*
! 211: * Note: the only system in this class that does not have
! 212: * the Valkyrie chip -- at least, that we know of -- is
! 213: * the Performa/LC 57x series. This system has a version
! 214: * of the DAFB controller, instead.
! 215: *
! 216: * If this assumption proves false, we'll have to be more
! 217: * intelligent here.
! 218: */
! 219: /*FALLTHROUGH*/
! 220: case MACH_CLASSQ:
! 221: if (bus_space_map(sc->sc_tag, DAFB_CONTROL_BASE, 0x120, 0,
! 222: &sc->sc_regh)) {
! 223: printf(": can't map DAFB registers\n");
! 224: free(dc, M_DEVBUF);
! 225: return;
! 226: }
! 227:
! 228: sc->sc_basepa = DAFB_BASE;
! 229: length = 0x00100000; /* 1MB */
! 230:
! 231: /* Compute the current frame buffer offset */
! 232: vbase1 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x0) & 0xfff;
! 233:
! 234: /*
! 235: * XXX The following exists because the DAFB v7 in these
! 236: * systems doesn't return reasonable values to use for fbofs.
! 237: * Ken'ichi Ishizaka gets credit for this hack. (sar 19990426)
! 238: * (Does this get us the correct result for _all_ DAFB-
! 239: * equipped systems and monitor combinations? It seems
! 240: * possible, if not likely...)
! 241: */
! 242: switch (current_mac_model->machineid) {
! 243: case MACH_MACLC475:
! 244: case MACH_MACLC475_33:
! 245: case MACH_MACLC575:
! 246: case MACH_MACQ605:
! 247: case MACH_MACQ605_33:
! 248: vbase1 &= 0x3f;
! 249: break;
! 250: }
! 251: vbase2 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x4) & 0xf;
! 252: sc->sc_fbofs = (vbase1 << 9) | (vbase2 << 5);
! 253:
! 254: #ifdef DEBUG
! 255: printf(" @ %lx", sc->sc_basepa + sc->sc_fbofs);
! 256: #endif
! 257:
! 258: /* Disable interrupts */
! 259: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x104, 0);
! 260:
! 261: /* Clear any pending interrupts */
! 262: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x10C, 0);
! 263: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x110, 0);
! 264: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x114, 0);
! 265:
! 266: printf(": DAFB, monitor sense %x\n",
! 267: (bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x1c) & 0x7));
! 268:
! 269: bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x120);
! 270:
! 271: if (bus_space_map(sc->sc_tag, DAFB_CMAP_BASE, 0x20, 0,
! 272: &sc->sc_regh) == 0) {
! 273: dc->dc_cmapregs = (vaddr_t)bus_space_vaddr(sc->sc_tag,
! 274: sc->sc_regh);
! 275: dc->dc_setcolor = dafb_setcolor;
! 276: }
! 277:
! 278: break;
! 279: case MACH_CLASSAV:
! 280: sc->sc_basepa = CIVIC_BASE;
! 281: length = 0x00200000; /* 2MB */
! 282:
! 283: if (sc->sc_basepa <= mac68k_vidphys &&
! 284: mac68k_vidphys < (sc->sc_basepa + length))
! 285: sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa;
! 286: else
! 287: sc->sc_fbofs = 0;
! 288:
! 289: #ifdef DEBUG
! 290: printf(" @ %lx", sc->sc_basepa + sc->sc_fbofs);
! 291: #endif
! 292:
! 293: if (bus_space_map(sc->sc_tag, CIVIC_CONTROL_BASE, PAGE_SIZE,
! 294: 0, &sc->sc_regh) != 0) {
! 295: printf(": can't map Civic registers\n");
! 296: free(dc, M_DEVBUF);
! 297: return;
! 298: }
! 299:
! 300: /* Disable interrupts */
! 301: bus_space_write_1(sc->sc_tag, sc->sc_regh, 0x120, 0);
! 302: bus_space_unmap(sc->sc_tag, sc->sc_regh, PAGE_SIZE);
! 303:
! 304: printf(": Civic\n");
! 305: break;
! 306: case MACH_CLASSIIci:
! 307: case MACH_CLASSIIsi:
! 308: sc->sc_basepa = trunc_page(mac68k_vidphys);
! 309: sc->sc_fbofs = m68k_page_offset(mac68k_vidphys);
! 310: length = mac68k_vidlen + sc->sc_fbofs;
! 311:
! 312: #ifdef DEBUG
! 313: printf(" @ %lx: RBV", sc->sc_basepa + sc->sc_fbofs);
! 314: switch (via2_reg(rMonitor) & RBVMonitorMask) {
! 315: case RBVMonIDBWP:
! 316: printf(", 15\" monochrome portrait");
! 317: break;
! 318: case RBVMonIDRGB12:
! 319: printf(", 12\" color");
! 320: break;
! 321: case RBVMonIDRGB15:
! 322: printf(", 15\" color");
! 323: break;
! 324: case RBVMonIDStd:
! 325: printf(", Macintosh II");
! 326: break;
! 327: default:
! 328: printf(", unrecognized");
! 329: break;
! 330: }
! 331: printf(" display\n");
! 332: #else
! 333: printf(": RBV\n");
! 334: #endif
! 335:
! 336: break;
! 337: default:
! 338: sc->sc_basepa = trunc_page(mac68k_vidphys);
! 339: sc->sc_fbofs = m68k_page_offset(mac68k_vidphys);
! 340: length = mac68k_vidlen + sc->sc_fbofs;
! 341:
! 342: #ifdef DEBUG
! 343: printf(" @ %lx:", sc->sc_basepa + sc->sc_fbofs);
! 344: #endif
! 345: printf(": On-board video\n");
! 346: break;
! 347: }
! 348:
! 349: if (bus_space_map(sc->sc_tag, sc->sc_basepa, length, 0,
! 350: &sc->sc_handle)) {
! 351: printf("%s: failed to map video RAM\n", sc->sc_dev.dv_xname);
! 352: free(dc, M_DEVBUF);
! 353: return;
! 354: }
! 355:
! 356: if (sc->sc_basepa <= mac68k_vidphys &&
! 357: mac68k_vidphys < (sc->sc_basepa + length))
! 358: videoaddr =
! 359: (vaddr_t)bus_space_vaddr(sc->sc_tag, sc->sc_handle) +
! 360: sc->sc_fbofs;
! 361:
! 362: dc->dc_vaddr = (vaddr_t)bus_space_vaddr(sc->sc_tag, sc->sc_handle);
! 363: dc->dc_paddr = sc->sc_basepa;
! 364: dc->dc_offset = sc->sc_fbofs;
! 365: dc->dc_wid = videosize & 0xffff;
! 366: dc->dc_ht = (videosize >> 16) & 0xffff;
! 367: dc->dc_depth = videobitdepth;
! 368: dc->dc_rowbytes = videorowbytes;
! 369: dc->dc_size = dc->dc_ht * dc->dc_rowbytes;
! 370:
! 371: /* Perform common video attachment. */
! 372: macfb_attach_common(sc, dc);
! 373: }
! 374:
! 375: /*
! 376: * Basic indexed modes palette handling.
! 377: */
! 378:
! 379: void
! 380: dafb_setcolor(void *v, u_int start, u_int end)
! 381: {
! 382: struct macfb_devconfig *dc = v;
! 383: u_int i;
! 384: u_int8_t *c;
! 385:
! 386: c = dc->dc_cmap;
! 387:
! 388: /*
! 389: * DAFB can not start a colormap update at a color index different
! 390: * than zero, so we need to reprogram all slots below the requested
! 391: * range.
! 392: */
! 393: *(volatile u_int32_t *)(dc->dc_cmapregs) = 0;
! 394: for (i = 0; i < end; i++) {
! 395: *(volatile u_int8_t *)(dc->dc_cmapregs + 0x13) = *c++;
! 396: *(volatile u_int8_t *)(dc->dc_cmapregs + 0x13) = *c++;
! 397: *(volatile u_int8_t *)(dc->dc_cmapregs + 0x13) = *c++;
! 398: }
! 399: }
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