ofb.c revision 1.13
1 /* $NetBSD: ofb.c,v 1.13 2000/06/19 19:35:20 tsubai Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #include <sys/param.h> 31 #include <sys/buf.h> 32 #include <sys/conf.h> 33 #include <sys/device.h> 34 #include <sys/ioctl.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/systm.h> 38 39 #include <vm/vm.h> 40 41 #include <dev/pci/pcidevs.h> 42 #include <dev/pci/pcireg.h> 43 #include <dev/pci/pcivar.h> 44 45 #include <dev/wscons/wsconsio.h> 46 #include <dev/wscons/wsdisplayvar.h> 47 #include <dev/rasops/rasops.h> 48 49 #include <dev/ofw/ofw_pci.h> 50 51 #include <machine/bus.h> 52 #include <machine/grfioctl.h> 53 54 #include <macppc/dev/ofbvar.h> 55 56 int ofbmatch __P((struct device *, struct cfdata *, void *)); 57 void ofbattach __P((struct device *, struct device *, void *)); 58 int ofbprint __P((void *, const char *)); 59 60 struct cfattach ofb_ca = { 61 sizeof(struct ofb_softc), ofbmatch, ofbattach, 62 }; 63 64 struct ofb_devconfig ofb_console_dc; 65 66 struct wsscreen_descr ofb_stdscreen = { 67 "std", 68 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 69 0, 70 0, 0, 71 WSSCREEN_REVERSE 72 }; 73 74 const struct wsscreen_descr *_ofb_scrlist[] = { 75 &ofb_stdscreen, 76 /* XXX other formats, graphics screen? */ 77 }; 78 79 struct wsscreen_list ofb_screenlist = { 80 sizeof(_ofb_scrlist) / sizeof(struct wsscreen_descr *), _ofb_scrlist 81 }; 82 83 static int ofb_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 84 static int ofb_mmap __P((void *, off_t, int)); 85 static int ofb_alloc_screen __P((void *, const struct wsscreen_descr *, 86 void **, int *, int *, long *)); 87 static void ofb_free_screen __P((void *, void *)); 88 static int ofb_show_screen __P((void *, void *, int, 89 void (*) (void *, int, int), void *)); 90 91 struct wsdisplay_accessops ofb_accessops = { 92 ofb_ioctl, 93 ofb_mmap, 94 ofb_alloc_screen, 95 ofb_free_screen, 96 ofb_show_screen, 97 0 /* load_font */ 98 }; 99 100 static struct wsdisplay_font openfirm6x11; 101 102 static void ofb_common_init __P((int, struct ofb_devconfig *)); 103 static int ofb_getcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); 104 static int ofb_putcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); 105 106 int 107 ofbmatch(parent, match, aux) 108 struct device *parent; 109 struct cfdata *match; 110 void *aux; 111 { 112 struct pci_attach_args *pa = aux; 113 114 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE && 115 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_CONTROL) 116 return 1; 117 118 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY) 119 return 1; 120 121 return 0; 122 } 123 124 void 125 ofbattach(parent, self, aux) 126 struct device *parent, *self; 127 void *aux; 128 { 129 struct ofb_softc *sc = (struct ofb_softc *)self; 130 struct pci_attach_args *pa = aux; 131 struct wsemuldisplaydev_attach_args a; 132 int console; 133 struct ofb_devconfig *dc; 134 char devinfo[256]; 135 136 console = ofb_is_console(); 137 138 if (console) { 139 dc = &ofb_console_dc; 140 sc->nscreens = 1; 141 } else { 142 int node, i, screenbytes; 143 144 dc = malloc(sizeof(struct ofb_devconfig), M_DEVBUF, M_WAITOK); 145 bzero(dc, sizeof(struct ofb_devconfig)); 146 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 147 if (node == 0) { 148 printf(": ofdev not found\n"); 149 return; 150 } 151 ofb_common_init(node, dc); 152 153 screenbytes = dc->dc_ri.ri_stride * dc->dc_ri.ri_height; 154 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 155 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 156 } 157 sc->sc_dc = dc; 158 159 OF_getprop(dc->dc_node, "assigned-addresses", sc->sc_addrs, 160 sizeof(sc->sc_addrs)); 161 162 if (dc->dc_paddr == 0) { 163 printf(": cannot map framebuffer\n"); 164 return; 165 } 166 167 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 168 printf(": %s\n", devinfo); 169 printf("%s: %d x %d, %dbpp\n", self->dv_xname, 170 dc->dc_ri.ri_width, dc->dc_ri.ri_height, dc->dc_ri.ri_depth); 171 172 sc->sc_cmap_red[0] = sc->sc_cmap_green[0] = sc->sc_cmap_blue[0] = 0; 173 sc->sc_cmap_red[15] = sc->sc_cmap_red[255] = 0xff; 174 sc->sc_cmap_green[15] = sc->sc_cmap_green[255] = 0xff; 175 sc->sc_cmap_blue[15] = sc->sc_cmap_blue[255] = 0xff; 176 177 a.console = console; 178 a.scrdata = &ofb_screenlist; 179 a.accessops = &ofb_accessops; 180 a.accesscookie = sc; 181 182 config_found(self, &a, wsemuldisplaydevprint); 183 } 184 185 void 186 ofb_common_init(node, dc) 187 int node; 188 struct ofb_devconfig *dc; 189 { 190 struct rasops_info *ri = &dc->dc_ri; 191 int32_t addr, width, height, linebytes, depth; 192 193 dc->dc_node = node; 194 if (dc->dc_ih == 0) { 195 char name[64]; 196 197 bzero(name, 64); 198 OF_package_to_path(node, name, sizeof(name)); 199 dc->dc_ih = OF_open(name); 200 } 201 202 /* XXX /chaos/control doesn't have "width", "height", ... */ 203 width = height = -1; 204 if (OF_getprop(node, "width", &width, 4) != 4) 205 OF_interpret("screen-width", 1, &width); 206 if (OF_getprop(node, "height", &height, 4) != 4) 207 OF_interpret("screen-height", 1, &height); 208 if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) 209 linebytes = width; /* XXX */ 210 if (OF_getprop(node, "depth", &depth, 4) != 4) 211 depth = 8; /* XXX */ 212 if (OF_getprop(node, "address", &addr, 4) != 4) 213 OF_interpret("frame-buffer-adr", 1, &addr); 214 215 if (width == -1 || height == -1 || addr == 0 || addr == -1) 216 return; 217 218 dc->dc_paddr = addr; /* PA of the frame buffer */ 219 220 /* Make sure 0/0/0 is black and 255/255/255 is white. */ 221 OF_call_method_1("color!", dc->dc_ih, 4, 0, 0, 0, 0); 222 OF_call_method_1("color!", dc->dc_ih, 4, 255, 255, 255, 255); 223 224 /* initialize rasops */ 225 ri->ri_width = width; 226 ri->ri_height = height; 227 ri->ri_depth = depth; 228 ri->ri_stride = linebytes; 229 ri->ri_bits = (char *)addr; 230 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR | RI_CENTER; 231 232 /* If screen is smaller than 1024x768, use small font. */ 233 if ((width < 1024 || height < 768) && copy_rom_font() == 0) { 234 int cols, rows; 235 236 OF_interpret("#lines", 1, &rows); 237 OF_interpret("#columns", 1, &cols); 238 239 ri->ri_font = &openfirm6x11; 240 ri->ri_wsfcookie = -1; /* not using wsfont */ 241 rasops_init(ri, rows, cols); 242 243 ri->ri_xorigin = 2; 244 ri->ri_yorigin = 3; 245 ri->ri_bits = (char *)addr + ri->ri_xorigin + 246 ri->ri_stride * ri->ri_yorigin; 247 } else 248 rasops_init(ri, height/22, (width/12) & ~7); /* XXX 12x22 */ 249 250 /* black on white */ 251 ri->ri_devcmap[0] = 0xffffffff; /* bg */ 252 ri->ri_devcmap[1] = 0; /* fg */ 253 254 ofb_stdscreen.nrows = ri->ri_rows; 255 ofb_stdscreen.ncols = ri->ri_cols; 256 ofb_stdscreen.textops = &ri->ri_ops; 257 ofb_stdscreen.capabilities = ri->ri_caps; 258 } 259 260 int 261 ofb_is_console() 262 { 263 int chosen, stdout, node; 264 char type[16]; 265 266 chosen = OF_finddevice("/chosen"); 267 OF_getprop(chosen, "stdout", &stdout, 4); 268 node = OF_instance_to_package(stdout); 269 OF_getprop(node, "device_type", type, sizeof(type)); 270 if (strcmp(type, "display") == 0) 271 return 1; 272 else 273 return 0; 274 } 275 276 int 277 ofb_ioctl(v, cmd, data, flag, p) 278 void *v; 279 u_long cmd; 280 caddr_t data; 281 int flag; 282 struct proc *p; 283 { 284 struct ofb_softc *sc = v; 285 struct ofb_devconfig *dc = sc->sc_dc; 286 struct wsdisplay_fbinfo *wdf; 287 struct grfinfo *gm; 288 289 switch (cmd) { 290 case WSDISPLAYIO_GTYPE: 291 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */ 292 return 0; 293 294 case WSDISPLAYIO_GINFO: 295 wdf = (void *)data; 296 wdf->height = dc->dc_ri.ri_height; 297 wdf->width = dc->dc_ri.ri_width; 298 wdf->depth = dc->dc_ri.ri_depth; 299 wdf->cmsize = 256; 300 return 0; 301 302 case WSDISPLAYIO_GETCMAP: 303 return ofb_getcmap(sc, (struct wsdisplay_cmap *)data); 304 305 case WSDISPLAYIO_PUTCMAP: 306 return ofb_putcmap(sc, (struct wsdisplay_cmap *)data); 307 308 /* XXX There are no way to know framebuffer pa from a user program. */ 309 case GRFIOCGINFO: 310 gm = (void *)data; 311 bzero(gm, sizeof(struct grfinfo)); 312 gm->gd_fbaddr = (caddr_t)dc->dc_paddr; 313 gm->gd_fbrowbytes = dc->dc_ri.ri_stride; 314 return 0; 315 } 316 return -1; 317 } 318 319 int 320 ofb_mmap(v, offset, prot) 321 void *v; 322 off_t offset; 323 int prot; 324 { 325 struct ofb_softc *sc = v; 326 struct ofb_devconfig *dc = sc->sc_dc; 327 struct rasops_info *ri = &dc->dc_ri; 328 u_int32_t *ap = sc->sc_addrs; 329 paddr_t pa; 330 int i; 331 332 if (offset >=0 && offset < (ri->ri_stride * ri->ri_height)) 333 return dc->dc_paddr + offset; 334 335 pa = offset; 336 for (i = 0; i < 6; i++) { 337 switch (ap[0] & OFW_PCI_PHYS_HI_SPACEMASK) { 338 case OFW_PCI_PHYS_HI_SPACE_MEM32: 339 if (pa >= ap[2] && pa < ap[2] + ap[4]) 340 return pa; 341 /* XXX I/O space? */ 342 } 343 ap += 5; 344 } 345 346 return -1; 347 } 348 349 int 350 ofb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) 351 void *v; 352 const struct wsscreen_descr *type; 353 void **cookiep; 354 int *curxp, *curyp; 355 long *attrp; 356 { 357 struct ofb_softc *sc = v; 358 struct rasops_info *ri = &sc->sc_dc->dc_ri; 359 long defattr; 360 361 if (sc->nscreens > 0) 362 return (ENOMEM); 363 364 *cookiep = ri; /* one and only for now */ 365 *curxp = 0; 366 *curyp = 0; 367 (*ri->ri_ops.alloc_attr)(ri, 0, 0, 0, &defattr); 368 *attrp = defattr; 369 sc->nscreens++; 370 return 0; 371 } 372 373 void 374 ofb_free_screen(v, cookie) 375 void *v; 376 void *cookie; 377 { 378 struct ofb_softc *sc = v; 379 380 if (sc->sc_dc == &ofb_console_dc) 381 panic("ofb_free_screen: console"); 382 383 sc->nscreens--; 384 } 385 386 int 387 ofb_show_screen(v, cookie, waitok, cb, cbarg) 388 void *v; 389 void *cookie; 390 int waitok; 391 void (*cb) __P((void *, int, int)); 392 void *cbarg; 393 { 394 395 return (0); 396 } 397 398 int 399 ofb_cnattach() 400 { 401 struct ofb_devconfig *dc = &ofb_console_dc; 402 struct rasops_info *ri = &dc->dc_ri; 403 long defattr; 404 int crow = 0; 405 int chosen, stdout, node; 406 407 chosen = OF_finddevice("/chosen"); 408 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 409 node = OF_instance_to_package(stdout); 410 dc->dc_ih = stdout; 411 412 /* get current cursor position */ 413 OF_interpret("line#", 1, &crow); 414 415 /* move (rom monitor) cursor to the lowest line - 1 */ 416 OF_interpret("#lines 2 - to line#", 0); 417 418 ofb_common_init(node, dc); 419 420 if (ri->ri_width >= 1024 && ri->ri_height >= 768) { 421 int i, screenbytes = ri->ri_stride * ri->ri_height; 422 423 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 424 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 425 crow = 0; 426 } 427 428 (*ri->ri_ops.alloc_attr)(ri, 0, 0, 0, &defattr); 429 wsdisplay_cnattach(&ofb_stdscreen, ri, 0, crow, defattr); 430 431 return 0; 432 } 433 434 int 435 copy_rom_font() 436 { 437 u_char *romfont; 438 int char_width, char_height; 439 int chosen, mmu, m, e; 440 441 /* Get ROM FONT address. */ 442 OF_interpret("font-adr", 1, &romfont); 443 if (romfont == NULL) 444 return -1; 445 446 chosen = OF_finddevice("/chosen"); 447 OF_getprop(chosen, "mmu", &mmu, 4); 448 449 /* 450 * Convert to physcal address. We cannot access to Open Firmware's 451 * virtual address space. 452 */ 453 OF_call_method("translate", mmu, 1, 3, romfont, &romfont, &m, &e); 454 455 /* Get character size */ 456 OF_interpret("char-width", 1, &char_width); 457 OF_interpret("char-height", 1, &char_height); 458 459 openfirm6x11.name = "Open Firmware"; 460 openfirm6x11.firstchar = 32; 461 openfirm6x11.numchars = 96; 462 openfirm6x11.encoding = WSDISPLAY_FONTENC_ISO; 463 openfirm6x11.fontwidth = char_width; 464 openfirm6x11.fontheight = char_height; 465 openfirm6x11.stride = 1; 466 openfirm6x11.bitorder = WSDISPLAY_FONTORDER_L2R; 467 openfirm6x11.byteorder = WSDISPLAY_FONTORDER_L2R; 468 openfirm6x11.data = romfont; 469 470 return 0; 471 } 472 473 int 474 ofb_getcmap(sc, cm) 475 struct ofb_softc *sc; 476 struct wsdisplay_cmap *cm; 477 { 478 u_int index = cm->index; 479 u_int count = cm->count; 480 int error; 481 482 if (index >= 256 || count > 256 || index + count > 256) 483 return EINVAL; 484 485 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 486 if (error) 487 return error; 488 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 489 if (error) 490 return error; 491 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 492 if (error) 493 return error; 494 495 return 0; 496 } 497 498 int 499 ofb_putcmap(sc, cm) 500 struct ofb_softc *sc; 501 struct wsdisplay_cmap *cm; 502 { 503 struct ofb_devconfig *dc = sc->sc_dc; 504 int index = cm->index; 505 int count = cm->count; 506 int i; 507 u_char *r, *g, *b; 508 509 if (cm->index >= 256 || cm->count > 256 || 510 (cm->index + cm->count) > 256) 511 return EINVAL; 512 if (!uvm_useracc(cm->red, cm->count, B_READ) || 513 !uvm_useracc(cm->green, cm->count, B_READ) || 514 !uvm_useracc(cm->blue, cm->count, B_READ)) 515 return EFAULT; 516 copyin(cm->red, &sc->sc_cmap_red[index], count); 517 copyin(cm->green, &sc->sc_cmap_green[index], count); 518 copyin(cm->blue, &sc->sc_cmap_blue[index], count); 519 520 r = &sc->sc_cmap_red[index]; 521 g = &sc->sc_cmap_green[index]; 522 b = &sc->sc_cmap_blue[index]; 523 524 for (i = 0; i < count; i++) { 525 OF_call_method_1("color!", dc->dc_ih, 4, *r, *g, *b, index); 526 r++, g++, b++, index++; 527 } 528 529 return 0; 530 } 531
Indexes created Sat Sep 27 14:09:57 GMT 2025