1 /* $NetBSD: voodoofb.c,v 1.49 2014/07/24 09:39:58 macallan Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006, 2012 Michael Lorenz 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * A console driver for 3Dfx Voodoo3 graphics boards 30 * Thanks to Andreas Drewke (andreas_dr@gmx.de) for his Voodoo3 driver for BeOS 31 * which I used as reference / documentation 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: voodoofb.c,v 1.49 2014/07/24 09:39:58 macallan Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/malloc.h> 42 #include <sys/callout.h> 43 #include <sys/kauth.h> 44 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcidevs.h> 48 #include <dev/pci/pciio.h> 49 #include <dev/pci/voodoofbreg.h> 50 51 #include <dev/wscons/wsdisplayvar.h> 52 #include <dev/wscons/wsconsio.h> 53 #include <dev/wsfont/wsfont.h> 54 #include <dev/rasops/rasops.h> 55 #include <dev/wscons/wsdisplay_vconsvar.h> 56 #include <dev/pci/wsdisplay_pci.h> 57 58 #include <dev/i2c/i2cvar.h> 59 #include <dev/i2c/i2c_bitbang.h> 60 #include <dev/i2c/ddcvar.h> 61 #include <dev/videomode/videomode.h> 62 #include <dev/videomode/edidvar.h> 63 #include <dev/videomode/edidreg.h> 64 65 #include "opt_wsemul.h" 66 67 struct voodoofb_softc { 68 device_t sc_dev; 69 pci_chipset_tag_t sc_pc; 70 pcitag_t sc_pcitag; 71 struct pci_attach_args sc_pa; 72 73 bus_space_tag_t sc_memt; 74 bus_space_tag_t sc_iot; 75 bus_space_handle_t sc_memh; 76 77 bus_space_tag_t sc_regt; 78 bus_space_tag_t sc_ioregt; 79 bus_space_handle_t sc_regh; 80 bus_space_handle_t sc_ioregh; 81 bus_addr_t sc_regs, sc_fb, sc_ioreg; 82 bus_size_t sc_regsize, sc_fbsize, sc_ioregsize; 83 84 void *sc_ih; 85 86 #define MAX_CLOCK_VB 270000 /* Voodoo Banshee */ 87 #define MAX_CLOCK_V3 300000 /* Voodoo3 */ 88 #define MAX_CLOCK_V45 350000 /* Voodoo4/5 (not yet) */ 89 uint32_t sc_max_clock; 90 91 size_t sc_memsize; 92 int sc_memtype; 93 94 int sc_bits_per_pixel; 95 int sc_width, sc_height, sc_linebytes; 96 const struct videomode *sc_videomode; 97 int sc_is_mapped; 98 99 /* glyph cache */ 100 long sc_defattr, sc_kernattr; 101 uint32_t sc_glyphs_defattr[256]; 102 uint32_t sc_glyphs_kernattr[256]; 103 int sc_numglyphs, sc_usedglyphs; 104 uint32_t sc_cache; /* offset where cache starts */ 105 uint32_t sc_fmt; /* *fmt register */ 106 void *sc_font; 107 108 /* i2c stuff */ 109 struct i2c_controller sc_i2c; 110 uint8_t sc_edid_data[128]; 111 struct edid_info sc_edid_info; 112 uint32_t sc_i2creg; 113 114 int sc_mode; 115 uint32_t sc_bg; 116 117 u_char sc_cmap_red[256]; 118 u_char sc_cmap_green[256]; 119 u_char sc_cmap_blue[256]; 120 int sc_dacw; 121 122 struct vcons_data vd; 123 }; 124 125 struct voodoo_regs { 126 uint8_t vr_crtc[31]; 127 uint8_t vr_graph[9]; 128 uint8_t vr_attr[21]; 129 uint8_t vr_seq[5]; 130 }; 131 132 static struct vcons_screen voodoofb_console_screen; 133 134 static int voodoofb_match(device_t, cfdata_t, void *); 135 static void voodoofb_attach(device_t, device_t, void *); 136 137 static int voodoofb_drm_print(void *, const char *); 138 static int voodoofb_drm_unmap(struct voodoofb_softc *); 139 static int voodoofb_drm_map(struct voodoofb_softc *); 140 141 CFATTACH_DECL_NEW(voodoofb, sizeof(struct voodoofb_softc), voodoofb_match, 142 voodoofb_attach, NULL, NULL); 143 144 static bool voodoofb_is_console(struct voodoofb_softc *); 145 static void voodoofb_init(struct voodoofb_softc *); 146 147 static void voodoofb_cursor(void *, int, int, int); 148 static void voodoofb_putchar(void *, int, int, u_int, long); 149 static void voodoofb_putchar_aa(void *, int, int, u_int, long); 150 static void voodoofb_copycols(void *, int, int, int, int); 151 static void voodoofb_erasecols(void *, int, int, int, long); 152 static void voodoofb_copyrows(void *, int, int, int); 153 static void voodoofb_eraserows(void *, int, int, long); 154 155 #if 0 156 static int voodoofb_allocattr(void *, int, int, int, long *); 157 static void voodoofb_scroll(void *, void *, int); 158 static int voodoofb_load_font(void *, void *, struct wsdisplay_font *); 159 #endif 160 161 static int voodoofb_putcmap(struct voodoofb_softc *, 162 struct wsdisplay_cmap *); 163 static int voodoofb_getcmap(struct voodoofb_softc *, 164 struct wsdisplay_cmap *); 165 static int voodoofb_putpalreg(struct voodoofb_softc *, uint8_t, uint8_t, 166 uint8_t, uint8_t); 167 static void voodoofb_bitblt(struct voodoofb_softc *, int, int, int, int, 168 int, int); 169 static void voodoofb_rectfill(struct voodoofb_softc *, int, int, int, int, 170 int); 171 static void voodoofb_rectinvert(struct voodoofb_softc *, int, int, int, 172 int); 173 static void voodoofb_setup_mono(struct voodoofb_softc *, int, int, int, 174 int, uint32_t, uint32_t); 175 static void voodoofb_feed_line(struct voodoofb_softc *, int, uint8_t *); 176 177 static void voodoofb_wait_idle(struct voodoofb_softc *); 178 static void voodoofb_init_glyphcache(struct voodoofb_softc *, 179 struct rasops_info *); 180 181 #ifdef VOODOOFB_ENABLE_INTR 182 static int voodoofb_intr(void *); 183 #endif 184 185 static void voodoofb_set_videomode(struct voodoofb_softc *, 186 const struct videomode *); 187 188 struct wsscreen_descr voodoofb_defaultscreen = { 189 "default", 190 0, 0, 191 NULL, 192 8, 16, 193 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 194 NULL, 195 }; 196 197 const struct wsscreen_descr *_voodoofb_scrlist[] = { 198 &voodoofb_defaultscreen, 199 /* XXX other formats, graphics screen? */ 200 }; 201 202 struct wsscreen_list voodoofb_screenlist = { 203 sizeof(_voodoofb_scrlist) / sizeof(struct wsscreen_descr *), _voodoofb_scrlist 204 }; 205 206 static int voodoofb_ioctl(void *, void *, u_long, void *, int, 207 struct lwp *); 208 static paddr_t voodoofb_mmap(void *, void *, off_t, int); 209 210 static void voodoofb_clearscreen(struct voodoofb_softc *); 211 static void voodoofb_init_screen(void *, struct vcons_screen *, int, 212 long *); 213 214 215 struct wsdisplay_accessops voodoofb_accessops = { 216 voodoofb_ioctl, 217 voodoofb_mmap, 218 NULL, 219 NULL, 220 NULL, 221 NULL, /* load_font */ 222 NULL, /* polls */ 223 NULL, /* scroll */ 224 }; 225 226 /* I2C glue */ 227 static int voodoofb_i2c_acquire_bus(void *, int); 228 static void voodoofb_i2c_release_bus(void *, int); 229 static int voodoofb_i2c_send_start(void *, int); 230 static int voodoofb_i2c_send_stop(void *, int); 231 static int voodoofb_i2c_initiate_xfer(void *, i2c_addr_t, int); 232 static int voodoofb_i2c_read_byte(void *, uint8_t *, int); 233 static int voodoofb_i2c_write_byte(void *, uint8_t, int); 234 235 /* I2C bitbang glue */ 236 static void voodoofb_i2cbb_set_bits(void *, uint32_t); 237 static void voodoofb_i2cbb_set_dir(void *, uint32_t); 238 static uint32_t voodoofb_i2cbb_read(void *); 239 240 static void voodoofb_setup_i2c(struct voodoofb_softc *); 241 242 static const struct i2c_bitbang_ops voodoofb_i2cbb_ops = { 243 voodoofb_i2cbb_set_bits, 244 voodoofb_i2cbb_set_dir, 245 voodoofb_i2cbb_read, 246 { 247 VSP_SDA0_IN, 248 VSP_SCL0_IN, 249 0, 250 0 251 } 252 }; 253 254 extern const u_char rasops_cmap[768]; 255 256 /* 257 * Inline functions for getting access to register aperture. 258 */ 259 static inline void 260 voodoo3_write32(struct voodoofb_softc *sc, uint32_t reg, uint32_t val) 261 { 262 bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val); 263 } 264 265 static inline void 266 voodoo3_write32s(struct voodoofb_softc *sc, uint32_t reg, uint32_t val) 267 { 268 bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val); 269 } 270 static inline uint32_t 271 voodoo3_read32(struct voodoofb_softc *sc, uint32_t reg) 272 { 273 return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg); 274 } 275 276 static inline void 277 voodoo3_write_crtc(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 278 { 279 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, CRTC_INDEX - 0x300, reg); 280 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, CRTC_DATA - 0x300, val); 281 } 282 283 static inline void 284 voodoo3_write_seq(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 285 { 286 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, SEQ_INDEX - 0x300, reg); 287 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, SEQ_DATA - 0x300, val); 288 } 289 290 static inline void 291 voodoo3_write_gra(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 292 { 293 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, GRA_INDEX - 0x300, reg); 294 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, GRA_DATA - 0x300, val); 295 } 296 297 static inline void 298 voodoo3_write_attr(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 299 { 300 uint8_t index; 301 302 (void)bus_space_read_1(sc->sc_ioregt, sc->sc_ioregh, IS1_R - 0x300); 303 index = bus_space_read_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300); 304 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, reg); 305 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, val); 306 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, index); 307 } 308 309 static inline void 310 vga_outb(struct voodoofb_softc *sc, uint32_t reg, uint8_t val) 311 { 312 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, reg - 0x300, val); 313 } 314 315 /* wait until there's room for len bytes in the FIFO */ 316 static inline void 317 voodoo3_make_room(struct voodoofb_softc *sc, int len) 318 { 319 while ((voodoo3_read32(sc, STATUS) & 0x1f) < len); 320 } 321 322 static void 323 voodoofb_wait_idle(struct voodoofb_softc *sc) 324 { 325 int i = 0; 326 327 voodoo3_make_room(sc, 1); 328 voodoo3_write32(sc, COMMAND_3D, COMMAND_3D_NOP); 329 330 while (1) { 331 i = (voodoo3_read32(sc, STATUS) & STATUS_BUSY) ? 0 : i + 1; 332 if(i == 3) break; 333 } 334 } 335 336 static int 337 voodoofb_match(device_t parent, cfdata_t match, void *aux) 338 { 339 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 340 341 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 342 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 343 return 0; 344 if ((PCI_VENDOR(pa->pa_id)==PCI_VENDOR_3DFX) && 345 (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_VOODOO3)) 346 return 100; 347 348 if ((PCI_VENDOR(pa->pa_id)==PCI_VENDOR_3DFX) && 349 (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_BANSHEE)) 350 return 100; 351 return 0; 352 } 353 354 static void 355 voodoofb_attach(device_t parent, device_t self, void *aux) 356 { 357 struct voodoofb_softc *sc = device_private(self); 358 struct pci_attach_args *pa = aux; 359 struct wsemuldisplaydev_attach_args aa; 360 struct rasops_info *ri; 361 #ifdef VOODOOFB_ENABLE_INTR 362 pci_intr_handle_t ih; 363 const char *intrstr; 364 #endif 365 ulong defattr; 366 int console, width, height, i; 367 prop_dictionary_t dict; 368 int linebytes, depth, flags; 369 uint32_t bg, fg, ul; 370 371 sc->sc_dev = self; 372 373 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 374 sc->sc_pc = pa->pa_pc; 375 sc->sc_pcitag = pa->pa_tag; 376 sc->sc_dacw = -1; 377 pci_aprint_devinfo(pa, NULL); 378 379 sc->sc_memt = pa->pa_memt; 380 sc->sc_iot = pa->pa_iot; 381 sc->sc_pa = *pa; 382 383 if (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_BANSHEE) 384 sc->sc_max_clock = MAX_CLOCK_VB; 385 else 386 sc->sc_max_clock = MAX_CLOCK_V3; 387 388 /* the framebuffer */ 389 if (pci_mapreg_info(sc->sc_pc, sc->sc_pcitag, 0x14, PCI_MAPREG_TYPE_MEM, 390 &sc->sc_fb, &sc->sc_fbsize, &flags)) { 391 aprint_error_dev(self, "failed to map the frame buffer.\n"); 392 } 393 sc->sc_memsize = sc->sc_fbsize >> 1; /* VRAM aperture is 2x VRAM */ 394 395 /* memory-mapped registers */ 396 if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 397 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 398 aprint_error_dev(self, "failed to map memory-mapped registers.\n"); 399 } 400 401 /* IO-mapped registers */ 402 if (pci_mapreg_map(pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 403 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 404 &sc->sc_ioregsize)) { 405 aprint_error_dev(self, "failed to map IO-mapped registers.\n"); 406 } 407 sc->sc_is_mapped = TRUE; 408 voodoofb_init(sc); 409 410 /* we should read these from the chip instead of depending on OF */ 411 width = height = -1; 412 413 dict = device_properties(self); 414 if (!prop_dictionary_get_uint32(dict, "width", &width)) { 415 aprint_error_dev(self, "no width property\n"); 416 return; 417 } 418 if (!prop_dictionary_get_uint32(dict, "height", &height)) { 419 aprint_error_dev(self, "no height property\n"); 420 return; 421 } 422 if (!prop_dictionary_get_uint32(dict, "depth", &depth)) { 423 aprint_error_dev(self, "no depth property\n"); 424 return; 425 } 426 linebytes = width; /* XXX */ 427 428 if (width == -1 || height == -1) 429 return; 430 431 sc->sc_width = width; 432 sc->sc_height = height; 433 sc->sc_bits_per_pixel = depth; 434 sc->sc_linebytes = linebytes; 435 printf("%s: initial resolution %dx%d, %d bit\n", device_xname(self), 436 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 437 438 sc->sc_videomode = NULL; 439 voodoofb_setup_i2c(sc); 440 441 /* XXX this should at least be configurable via kernel config */ 442 if (sc->sc_videomode == NULL) { 443 sc->sc_videomode = pick_mode_by_ref(width, height, 60); 444 } 445 446 voodoofb_set_videomode(sc, sc->sc_videomode); 447 448 sc->sc_font = NULL; 449 450 vcons_init(&sc->vd, sc, &voodoofb_defaultscreen, &voodoofb_accessops); 451 sc->vd.init_screen = voodoofb_init_screen; 452 453 console = voodoofb_is_console(sc); 454 455 ri = &voodoofb_console_screen.scr_ri; 456 if (console) { 457 vcons_init_screen(&sc->vd, &voodoofb_console_screen, 1, 458 &defattr); 459 voodoofb_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 460 461 voodoofb_defaultscreen.textops = &ri->ri_ops; 462 voodoofb_defaultscreen.capabilities = ri->ri_caps; 463 voodoofb_defaultscreen.nrows = ri->ri_rows; 464 voodoofb_defaultscreen.ncols = ri->ri_cols; 465 wsdisplay_cnattach(&voodoofb_defaultscreen, ri, 0, 0, defattr); 466 } else { 467 if (voodoofb_console_screen.scr_ri.ri_rows == 0) { 468 /* do some minimal setup to avoid weirdnesses later */ 469 vcons_init_screen(&sc->vd, &voodoofb_console_screen, 470 1, &defattr); 471 } else 472 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 473 } 474 475 printf("%s: %d MB aperture at 0x%08x, %d MB registers at 0x%08x\n", 476 device_xname(self), (u_int)(sc->sc_fbsize >> 20), 477 (u_int)sc->sc_fb, (u_int)(sc->sc_regsize >> 20), 478 (u_int)sc->sc_regs); 479 #ifdef VOODOOFB_DEBUG 480 printf("fb: %08lx\n", (ulong)ri->ri_bits); 481 #endif 482 483 if (sc->sc_bits_per_pixel == 8) { 484 uint8_t tmp; 485 for (i = 0; i < 256; i++) { 486 tmp = i & 0xe0; 487 /* 488 * replicate bits so 0xe0 maps to a red value of 0xff 489 * in order to make white look actually white 490 */ 491 tmp |= (tmp >> 3) | (tmp >> 6); 492 sc->sc_cmap_red[i] = tmp; 493 494 tmp = (i & 0x1c) << 3; 495 tmp |= (tmp >> 3) | (tmp >> 6); 496 sc->sc_cmap_green[i] = tmp; 497 498 tmp = (i & 0x03) << 6; 499 tmp |= tmp >> 2; 500 tmp |= tmp >> 4; 501 sc->sc_cmap_blue[i] = tmp; 502 503 voodoofb_putpalreg(sc, i, sc->sc_cmap_red[i], 504 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 505 } 506 } else { 507 /* linear ramp */ 508 for (i = 0; i < 256; i++) { 509 sc->sc_cmap_red[i] = i; 510 sc->sc_cmap_green[i] = i; 511 sc->sc_cmap_blue[i] = i; 512 513 voodoofb_putpalreg(sc, i, sc->sc_cmap_red[i], 514 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 515 } 516 } 517 518 #ifdef VOODOOFB_ENABLE_INTR 519 char intrbuf[PCI_INTRSTR_LEN]; 520 /* Interrupt. We don't use it for anything yet */ 521 if (pci_intr_map(pa, &ih)) { 522 aprint_error_dev(self, "failed to map interrupt\n"); 523 return; 524 } 525 526 intrstr = pci_intr_string(sc->sc_pc, ih, intrbuf, sizeof(intrbuf)); 527 sc->sc_ih = pci_intr_establish(sc->sc_pc, ih, IPL_NET, voodoofb_intr, 528 sc); 529 if (sc->sc_ih == NULL) { 530 aprint_error_dev(self, "failed to establish interrupt"); 531 if (intrstr != NULL) 532 aprint_error(" at %s", intrstr); 533 aprint_error("\n"); 534 return; 535 } 536 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 537 #endif 538 539 rasops_unpack_attr(defattr, &fg, &bg, &ul); 540 sc->sc_bg = ri->ri_devcmap[bg]; 541 voodoofb_clearscreen(sc); 542 543 if (console) 544 vcons_replay_msgbuf(&voodoofb_console_screen); 545 aa.console = console; 546 aa.scrdata = &voodoofb_screenlist; 547 aa.accessops = &voodoofb_accessops; 548 aa.accesscookie = &sc->vd; 549 550 config_found(self, &aa, wsemuldisplaydevprint); 551 config_found_ia(self, "drm", aux, voodoofb_drm_print); 552 } 553 554 static int 555 voodoofb_drm_print(void *opaque, const char *pnp) 556 { 557 if (pnp) 558 aprint_normal("drm at %s", pnp); 559 560 return UNCONF; 561 } 562 563 static int 564 voodoofb_drm_unmap(struct voodoofb_softc *sc) 565 { 566 567 if (!sc->sc_is_mapped) 568 return 0; 569 570 printf("%s: releasing bus resources\n", device_xname(sc->sc_dev)); 571 572 bus_space_unmap(sc->sc_ioregt, sc->sc_ioregh, sc->sc_ioregsize); 573 bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsize); 574 575 sc->sc_is_mapped = FALSE; 576 577 return 0; 578 } 579 580 static int 581 voodoofb_drm_map(struct voodoofb_softc *sc) 582 { 583 584 if (sc->sc_is_mapped) 585 return 0; 586 587 /* memory-mapped registers */ 588 if (pci_mapreg_map(&sc->sc_pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 589 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 590 aprint_error_dev(sc->sc_dev, 591 "failed to map memory-mapped registers.\n"); 592 } 593 594 /* IO-mapped registers */ 595 if (pci_mapreg_map(&sc->sc_pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 596 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 597 &sc->sc_ioregsize)) { 598 aprint_error_dev(sc->sc_dev, 599 "failed to map IO-mapped registers.\n"); 600 } 601 602 sc->sc_is_mapped = TRUE; 603 604 voodoofb_init(sc); 605 /* XXX this should at least be configurable via kernel config */ 606 voodoofb_set_videomode(sc, sc->sc_videomode); 607 608 return 0; 609 } 610 611 static int 612 voodoofb_putpalreg(struct voodoofb_softc *sc, uint8_t index, uint8_t r, 613 uint8_t g, uint8_t b) 614 { 615 uint32_t color; 616 617 sc->sc_cmap_red[index] = r; 618 sc->sc_cmap_green[index] = g; 619 sc->sc_cmap_blue[index] = b; 620 621 color = (r << 16) | (g << 8) | b; 622 voodoo3_make_room(sc, 2); 623 voodoo3_write32(sc, DACADDR, index); 624 voodoo3_write32(sc, DACDATA, color); 625 626 return 0; 627 } 628 629 static int 630 voodoofb_putcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 631 { 632 u_char *r, *g, *b; 633 u_int index = cm->index; 634 u_int count = cm->count; 635 int i, error; 636 u_char rbuf[256], gbuf[256], bbuf[256]; 637 638 #ifdef VOODOOFB_DEBUG 639 printf("putcmap: %d %d\n",index, count); 640 #endif 641 if (cm->index >= 256 || cm->count > 256 || 642 (cm->index + cm->count) > 256) 643 return EINVAL; 644 error = copyin(cm->red, &rbuf[index], count); 645 if (error) 646 return error; 647 error = copyin(cm->green, &gbuf[index], count); 648 if (error) 649 return error; 650 error = copyin(cm->blue, &bbuf[index], count); 651 if (error) 652 return error; 653 654 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 655 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 656 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 657 658 r = &sc->sc_cmap_red[index]; 659 g = &sc->sc_cmap_green[index]; 660 b = &sc->sc_cmap_blue[index]; 661 662 for (i = 0; i < count; i++) { 663 voodoofb_putpalreg(sc, index, *r, *g, *b); 664 index++; 665 r++, g++, b++; 666 } 667 return 0; 668 } 669 670 static int 671 voodoofb_getcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 672 { 673 u_int index = cm->index; 674 u_int count = cm->count; 675 int error; 676 677 if (index >= 255 || count > 256 || index + count > 256) 678 return EINVAL; 679 680 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 681 if (error) 682 return error; 683 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 684 if (error) 685 return error; 686 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 687 if (error) 688 return error; 689 690 return 0; 691 } 692 693 static bool 694 voodoofb_is_console(struct voodoofb_softc *sc) 695 { 696 prop_dictionary_t dict; 697 bool console; 698 699 dict = device_properties(sc->sc_dev); 700 prop_dictionary_get_bool(dict, "is_console", &console); 701 return console; 702 } 703 704 static void 705 voodoofb_clearscreen(struct voodoofb_softc *sc) 706 { 707 voodoofb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, sc->sc_bg); 708 } 709 710 /* 711 * wsdisplay_emulops 712 */ 713 714 static void 715 voodoofb_cursor(void *cookie, int on, int row, int col) 716 { 717 struct rasops_info *ri = cookie; 718 struct vcons_screen *scr = ri->ri_hw; 719 struct voodoofb_softc *sc = scr->scr_cookie; 720 int x, y, wi, he; 721 722 wi = ri->ri_font->fontwidth; 723 he = ri->ri_font->fontheight; 724 725 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 726 x = ri->ri_ccol * wi + ri->ri_xorigin; 727 y = ri->ri_crow * he + ri->ri_yorigin; 728 if (ri->ri_flg & RI_CURSOR) { 729 voodoofb_rectinvert(sc, x, y, wi, he); 730 ri->ri_flg &= ~RI_CURSOR; 731 } 732 ri->ri_crow = row; 733 ri->ri_ccol = col; 734 if (on) 735 { 736 x = ri->ri_ccol * wi + ri->ri_xorigin; 737 y = ri->ri_crow * he + ri->ri_yorigin; 738 voodoofb_rectinvert(sc, x, y, wi, he); 739 ri->ri_flg |= RI_CURSOR; 740 } 741 } else { 742 ri->ri_flg &= ~RI_CURSOR; 743 ri->ri_crow = row; 744 ri->ri_ccol = col; 745 } 746 } 747 748 #if 0 749 int 750 voodoofb_mapchar(void *cookie, int uni, u_int *index) 751 { 752 return 0; 753 } 754 #endif 755 756 static void 757 voodoofb_putchar(void *cookie, int row, int col, u_int c, long attr) 758 { 759 struct rasops_info *ri = cookie; 760 struct wsdisplay_font *font = PICK_FONT(ri, c); 761 struct vcons_screen *scr = ri->ri_hw; 762 struct voodoofb_softc *sc = scr->scr_cookie; 763 764 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 765 uint8_t *data; 766 int fg, bg, uc, i; 767 int x, y, wi, he; 768 769 wi = font->fontwidth; 770 he = font->fontheight; 771 772 if (!CHAR_IN_FONT(c, font)) 773 return; 774 bg = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 775 fg = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 776 x = ri->ri_xorigin + col * wi; 777 y = ri->ri_yorigin + row * he; 778 if (c == 0x20) { 779 voodoofb_rectfill(sc, x, y, wi, he, bg); 780 } else { 781 uc = c - font->firstchar; 782 data = (uint8_t *)font->data + uc * 783 ri->ri_fontscale; 784 voodoofb_setup_mono(sc, x, y, wi, he, fg, bg); 785 for (i = 0; i < he; i++) { 786 voodoofb_feed_line(sc, font->stride, data); 787 data += font->stride; 788 } 789 } 790 } 791 } 792 793 static void 794 voodoofb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 795 { 796 struct rasops_info *ri = cookie; 797 struct wsdisplay_font *font = PICK_FONT(ri, c); 798 struct vcons_screen *scr = ri->ri_hw; 799 struct voodoofb_softc *sc = scr->scr_cookie; 800 uint8_t *data; 801 uint32_t bg, latch = 0, bg8, fg8, pixel, save_offset = 0; 802 int i, x, y, wi, he, r, g, b, aval; 803 int r1, g1, b1, r0, g0, b0, fgo, bgo, j; 804 805 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 806 return; 807 808 if (!CHAR_IN_FONT(c, font)) 809 return; 810 811 wi = font->fontwidth; 812 he = font->fontheight; 813 814 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 815 x = ri->ri_xorigin + col * wi; 816 y = ri->ri_yorigin + row * he; 817 if (c == 0x20) { 818 voodoofb_rectfill(sc, x, y, wi, he, bg); 819 return; 820 } 821 822 /* first, see if it's in the cache */ 823 if ((attr == sc->sc_defattr) && (c < 256)) { 824 uint32_t offset = sc->sc_glyphs_defattr[c]; 825 if (offset != 0) { 826 voodoo3_make_room(sc, 8); 827 voodoo3_write32(sc, SRCBASE, offset); 828 voodoo3_write32(sc, DSTBASE, 0); 829 voodoo3_write32(sc, SRCFORMAT, sc->sc_fmt); 830 voodoo3_write32(sc, DSTFORMAT, sc->sc_linebytes | FMT_8BIT); 831 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 832 voodoo3_write32(sc, DSTXY, x | (y << 16)); 833 voodoo3_write32(sc, SRCXY, 0); 834 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT | 835 (ROP_COPY << 24) | SST_2D_GO); 836 return; 837 } else { 838 int slot = sc->sc_usedglyphs; 839 sc->sc_usedglyphs++; 840 save_offset = sc->sc_cache + (slot * ri->ri_fontscale); 841 sc->sc_glyphs_defattr[c] = save_offset; 842 } 843 } 844 data = WSFONT_GLYPH(c, font); 845 846 voodoo3_make_room(sc, 7); 847 voodoo3_write32(sc, DSTBASE, 0); 848 voodoo3_write32(sc, SRCFORMAT, FMT_8BIT | FMT_PAD_BYTE); 849 voodoo3_write32(sc, DSTFORMAT, sc->sc_linebytes | FMT_8BIT); 850 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 851 voodoo3_write32(sc, DSTXY, x | (y << 16)); 852 voodoo3_write32(sc, SRCXY, 0); 853 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 854 (ROP_COPY << 24) | SST_2D_GO); 855 856 /* 857 * we need the RGB colours here, so get offsets into rasops_cmap 858 */ 859 fgo = ((attr >> 24) & 0xf) * 3; 860 bgo = ((attr >> 16) & 0xf) * 3; 861 862 r0 = rasops_cmap[bgo]; 863 r1 = rasops_cmap[fgo]; 864 g0 = rasops_cmap[bgo + 1]; 865 g1 = rasops_cmap[fgo + 1]; 866 b0 = rasops_cmap[bgo + 2]; 867 b1 = rasops_cmap[fgo + 2]; 868 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 869 bg8 = R3G3B2(r0, g0, b0); 870 fg8 = R3G3B2(r1, g1, b1); 871 voodoo3_make_room(sc, 15); 872 j = 15; 873 for (i = 0; i < ri->ri_fontscale; i++) { 874 aval = *data; 875 if (aval == 0) { 876 pixel = bg8; 877 } else if (aval == 255) { 878 pixel = fg8; 879 } else { 880 r = aval * r1 + (255 - aval) * r0; 881 g = aval * g1 + (255 - aval) * g0; 882 b = aval * b1 + (255 - aval) * b0; 883 pixel = ((r & 0xe000) >> 8) | 884 ((g & 0xe000) >> 11) | 885 ((b & 0xc000) >> 14); 886 } 887 latch = (latch << 8) | pixel; 888 /* write in 32bit chunks */ 889 if ((i & 3) == 3) { 890 voodoo3_write32s(sc, LAUNCH_2D, latch); 891 /* 892 * not strictly necessary, old data should be shifted 893 * out 894 */ 895 latch = 0; 896 /* 897 * check for pipeline space every now and then 898 * I don't think we can feed a Voodoo3 faster than it 899 * can process simple pixel data but I have been wrong 900 * about that before 901 */ 902 j--; 903 if (j == 0) { 904 voodoo3_make_room(sc, 15); 905 j = 15; 906 } 907 } 908 data++; 909 } 910 /* if we have pixels left in latch write them out */ 911 if ((i & 3) != 0) { 912 latch = latch << ((4 - (i & 3)) << 3); 913 voodoo3_write32s(sc, LAUNCH_2D, latch); 914 } 915 if (save_offset != 0) { 916 /* save the glyph we just drew */ 917 voodoo3_make_room(sc, 8); 918 voodoo3_write32(sc, SRCBASE, 0); 919 voodoo3_write32(sc, DSTBASE, save_offset); 920 voodoo3_write32(sc, SRCFORMAT, sc->sc_linebytes | FMT_8BIT); 921 voodoo3_write32(sc, DSTFORMAT, sc->sc_fmt); 922 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 923 voodoo3_write32(sc, DSTXY, 0); 924 voodoo3_write32(sc, SRCXY, x | (y << 16)); 925 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT | 926 (ROP_COPY << 24) | SST_2D_GO); 927 } 928 } 929 930 static void 931 voodoofb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 932 { 933 struct rasops_info *ri = cookie; 934 struct vcons_screen *scr = ri->ri_hw; 935 struct voodoofb_softc *sc = scr->scr_cookie; 936 int32_t xs, xd, y, width, height; 937 938 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 939 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 940 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 941 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 942 width = ri->ri_font->fontwidth * ncols; 943 height = ri->ri_font->fontheight; 944 voodoofb_bitblt(sc, xs, y, xd, y, width, height); 945 } 946 } 947 948 static void 949 voodoofb_erasecols(void *cookie, int row, int startcol, int ncols, 950 long fillattr) 951 { 952 struct rasops_info *ri = cookie; 953 struct vcons_screen *scr = ri->ri_hw; 954 struct voodoofb_softc *sc = scr->scr_cookie; 955 int32_t x, y, width, height, fg, bg, ul; 956 957 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 958 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 959 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 960 width = ri->ri_font->fontwidth * ncols; 961 height = ri->ri_font->fontheight; 962 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 963 964 voodoofb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 965 } 966 } 967 968 static void 969 voodoofb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 970 { 971 struct rasops_info *ri = cookie; 972 struct vcons_screen *scr = ri->ri_hw; 973 struct voodoofb_softc *sc = scr->scr_cookie; 974 int32_t x, ys, yd, width, height; 975 976 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 977 x = ri->ri_xorigin; 978 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 979 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 980 width = ri->ri_emuwidth; 981 height = ri->ri_font->fontheight * nrows; 982 voodoofb_bitblt(sc, x, ys, x, yd, width, height); 983 } 984 } 985 986 static void 987 voodoofb_eraserows(void *cookie, int row, int nrows, long fillattr) 988 { 989 struct rasops_info *ri = cookie; 990 struct vcons_screen *scr = ri->ri_hw; 991 struct voodoofb_softc *sc = scr->scr_cookie; 992 int32_t x, y, width, height, fg, bg, ul; 993 994 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 995 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 996 if ((row == 0) && (nrows == ri->ri_rows)) { 997 /* clear the whole screen */ 998 voodoofb_rectfill(sc, 0, 0, ri->ri_width, 999 ri->ri_height, ri->ri_devcmap[bg]); 1000 } else { 1001 x = ri->ri_xorigin; 1002 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1003 width = ri->ri_emuwidth; 1004 height = ri->ri_font->fontheight * nrows; 1005 voodoofb_rectfill(sc, x, y, width, height, 1006 ri->ri_devcmap[bg]); 1007 } 1008 } 1009 } 1010 1011 static void 1012 voodoofb_bitblt(struct voodoofb_softc *sc, int xs, int ys, int xd, int yd, int width, int height) 1013 { 1014 uint32_t fmt, blitcmd; 1015 1016 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1017 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1018 blitcmd = COMMAND_2D_S2S_BITBLT | (ROP_COPY << 24); 1019 1020 if (xs <= xd) { 1021 blitcmd |= BIT(14); 1022 xs += (width - 1); 1023 xd += (width - 1); 1024 } 1025 if (ys <= yd) { 1026 blitcmd |= BIT(15); 1027 ys += (height - 1); 1028 yd += (height - 1); 1029 } 1030 voodoo3_make_room(sc, 8); 1031 1032 voodoo3_write32(sc, SRCBASE, 0); 1033 voodoo3_write32(sc, DSTBASE, 0); 1034 voodoo3_write32(sc, SRCFORMAT, fmt); 1035 voodoo3_write32(sc, DSTFORMAT, fmt); 1036 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1037 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1038 voodoo3_write32(sc, SRCXY, xs | (ys << 16)); 1039 voodoo3_write32(sc, COMMAND_2D, blitcmd | SST_2D_GO); 1040 } 1041 1042 static void 1043 voodoofb_rectfill(struct voodoofb_softc *sc, int x, int y, int width, 1044 int height, int colour) 1045 { 1046 uint32_t fmt; 1047 1048 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1049 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1050 1051 voodoo3_make_room(sc, 7); 1052 voodoo3_write32(sc, DSTFORMAT, fmt); 1053 voodoo3_write32(sc, DSTBASE, 0); 1054 voodoo3_write32(sc, COLORFORE, colour); 1055 voodoo3_write32(sc, COLORBACK, colour); 1056 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | (ROP_COPY << 24)); 1057 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1058 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1059 } 1060 1061 static void 1062 voodoofb_rectinvert(struct voodoofb_softc *sc, int x, int y, int width, 1063 int height) 1064 { 1065 uint32_t fmt; 1066 1067 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1068 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1069 1070 voodoo3_make_room(sc, 8); 1071 voodoo3_write32(sc, SRCBASE, 0); 1072 voodoo3_write32(sc, DSTBASE, 0); 1073 voodoo3_write32(sc, DSTFORMAT, fmt); 1074 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | 1075 (ROP_INVERT << 24)); 1076 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1077 voodoo3_write32(sc, DSTXY, x | (y << 16)); 1078 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1079 } 1080 1081 static void 1082 voodoofb_setup_mono(struct voodoofb_softc *sc, int xd, int yd, int width, int height, uint32_t fg, 1083 uint32_t bg) 1084 { 1085 uint32_t dfmt, sfmt = sc->sc_linebytes; 1086 1087 dfmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1088 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1089 1090 voodoo3_make_room(sc, 10); 1091 voodoo3_write32(sc, SRCFORMAT, sfmt); 1092 voodoo3_write32(sc, DSTFORMAT, dfmt); 1093 voodoo3_write32(sc, DSTBASE, 0); 1094 voodoo3_write32(sc, COLORFORE, fg); 1095 voodoo3_write32(sc, COLORBACK, bg); 1096 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1097 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1098 voodoo3_write32(sc, SRCXY, 0); 1099 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 1100 (ROP_COPY << 24) | SST_2D_GO); 1101 1102 /* now feed the data into the chip */ 1103 } 1104 1105 static void 1106 voodoofb_feed_line(struct voodoofb_softc *sc, int count, uint8_t *data) 1107 { 1108 int i; 1109 uint32_t latch = 0, bork; 1110 int shift = 0; 1111 1112 voodoo3_make_room(sc, count); 1113 for (i = 0; i < count; i++) { 1114 bork = data[i]; 1115 latch |= (bork << shift); 1116 if (shift == 24) { 1117 voodoo3_write32(sc, LAUNCH_2D, latch); 1118 latch = 0; 1119 shift = 0; 1120 } else 1121 shift += 8; 1122 } 1123 if (shift != 24) 1124 voodoo3_write32(sc, LAUNCH_2D, latch); 1125 } 1126 1127 #if 0 1128 static int 1129 voodoofb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp) 1130 { 1131 1132 return 0; 1133 } 1134 #endif 1135 1136 /* 1137 * wsdisplay_accessops 1138 */ 1139 1140 static int 1141 voodoofb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 1142 struct lwp *l) 1143 { 1144 struct vcons_data *vd = v; 1145 struct voodoofb_softc *sc = vd->cookie; 1146 struct wsdisplay_fbinfo *wdf; 1147 struct vcons_screen *ms = vd->active; 1148 1149 switch (cmd) { 1150 case WSDISPLAYIO_GTYPE: 1151 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 1152 return 0; 1153 1154 case WSDISPLAYIO_GINFO: 1155 wdf = (void *)data; 1156 wdf->height = ms->scr_ri.ri_height; 1157 wdf->width = ms->scr_ri.ri_width; 1158 wdf->depth = ms->scr_ri.ri_depth; 1159 wdf->cmsize = 256; 1160 return 0; 1161 1162 case WSDISPLAYIO_GETCMAP: 1163 return voodoofb_getcmap(sc, 1164 (struct wsdisplay_cmap *)data); 1165 1166 case WSDISPLAYIO_PUTCMAP: 1167 return voodoofb_putcmap(sc, 1168 (struct wsdisplay_cmap *)data); 1169 1170 /* PCI config read/write passthrough. */ 1171 case PCI_IOC_CFGREAD: 1172 case PCI_IOC_CFGWRITE: 1173 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 1174 cmd, data, flag, l); 1175 1176 case WSDISPLAYIO_GET_BUSID: 1177 return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc, 1178 sc->sc_pcitag, data); 1179 1180 case WSDISPLAYIO_SMODE: { 1181 int new_mode = *(int*)data; 1182 if (new_mode != sc->sc_mode) { 1183 sc->sc_mode = new_mode; 1184 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 1185 voodoofb_drm_map(sc); 1186 int i; 1187 1188 /* restore the palette */ 1189 for (i = 0; i < 256; i++) { 1190 voodoofb_putpalreg(sc, 1191 i, 1192 sc->sc_cmap_red[i], 1193 sc->sc_cmap_green[i], 1194 sc->sc_cmap_blue[i]); 1195 } 1196 1197 /* zap the glyph cache */ 1198 for (i = 0; i < 256; i++) { 1199 sc->sc_glyphs_defattr[i] = 0; 1200 sc->sc_glyphs_kernattr[i] = 0; 1201 } 1202 sc->sc_usedglyphs = 0; 1203 1204 voodoofb_clearscreen(sc); 1205 vcons_redraw_screen(ms); 1206 } else { 1207 voodoofb_drm_unmap(sc); 1208 } 1209 } 1210 } 1211 return 0; 1212 /* XXX WSDISPLAYIO_GET_EDID */ 1213 1214 case WSDISPLAYIO_GET_FBINFO: { 1215 struct wsdisplayio_fbinfo *fbi = data; 1216 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 1217 } 1218 } 1219 return EPASSTHROUGH; 1220 } 1221 1222 static paddr_t 1223 voodoofb_mmap(void *v, void *vs, off_t offset, int prot) 1224 { 1225 struct vcons_data *vd = v; 1226 struct voodoofb_softc *sc = vd->cookie; 1227 paddr_t pa; 1228 1229 /* 'regular' framebuffer mmap()ing */ 1230 if (sc->sc_mode == WSDISPLAYIO_MODE_DUMBFB) { 1231 if (offset < sc->sc_fbsize) { 1232 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb, offset, 1233 prot, 1234 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 1235 return pa; 1236 } 1237 } else if (sc->sc_mode == WSDISPLAYIO_MODE_MAPPED) { 1238 1239 if (kauth_authorize_machdep(kauth_cred_get(), 1240 KAUTH_MACHDEP_UNMANAGEDMEM, NULL, NULL, NULL, NULL) != 0) { 1241 aprint_error_dev(sc->sc_dev, "mmap() rejected.\n"); 1242 return -1; 1243 } 1244 1245 if ((offset >= 0xa0000) && 1246 (offset < 0xb0000)) { 1247 pa = bus_space_mmap(sc->sc_memt, 1248 sc->sc_fb, offset - 0xa0000, 1249 prot, BUS_SPACE_MAP_LINEAR); 1250 return pa; 1251 } 1252 1253 if ((offset >= sc->sc_fb) && 1254 (offset < (sc->sc_fb + sc->sc_fbsize))) { 1255 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1256 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 1257 return pa; 1258 } 1259 1260 if ((offset >= sc->sc_regs) && (offset < (sc->sc_regs + 1261 sc->sc_regsize))) { 1262 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1263 BUS_SPACE_MAP_LINEAR); 1264 return pa; 1265 } 1266 1267 #ifdef PCI_MAGIC_IO_RANGE 1268 /* allow mapping of IO space */ 1269 if ((offset >= PCI_MAGIC_IO_RANGE) && 1270 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 1271 pa = bus_space_mmap(sc->sc_iot, 1272 offset - PCI_MAGIC_IO_RANGE, 0, prot, 0); 1273 return pa; 1274 } 1275 #endif 1276 1277 #ifdef OFB_ALLOW_OTHERS 1278 if (offset >= 0x80000000) { 1279 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1280 BUS_SPACE_MAP_LINEAR); 1281 return pa; 1282 } 1283 #endif 1284 } 1285 return -1; 1286 } 1287 1288 static void 1289 voodoofb_init_screen(void *cookie, struct vcons_screen *scr, 1290 int existing, long *defattr) 1291 { 1292 struct voodoofb_softc *sc = cookie; 1293 struct rasops_info *ri = &scr->scr_ri; 1294 1295 ri->ri_depth = sc->sc_bits_per_pixel; 1296 ri->ri_width = sc->sc_width; 1297 ri->ri_height = sc->sc_height; 1298 ri->ri_stride = sc->sc_linebytes; 1299 ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 1300 1301 rasops_init(ri, 0, 0); 1302 ri->ri_caps = WSSCREEN_WSCOLORS; 1303 1304 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 1305 sc->sc_width / ri->ri_font->fontwidth); 1306 1307 ri->ri_hw = scr; 1308 ri->ri_ops.copyrows = voodoofb_copyrows; 1309 ri->ri_ops.copycols = voodoofb_copycols; 1310 ri->ri_ops.eraserows = voodoofb_eraserows; 1311 ri->ri_ops.erasecols = voodoofb_erasecols; 1312 ri->ri_ops.cursor = voodoofb_cursor; 1313 if (FONT_IS_ALPHA(ri->ri_font)) { 1314 ri->ri_ops.putchar = voodoofb_putchar_aa; 1315 ri->ri_ops.allocattr(ri, WS_DEFAULT_FG, WS_DEFAULT_BG, 1316 0, &sc->sc_defattr); 1317 sc->sc_kernattr = (WS_KERNEL_FG << 24) | (WS_KERNEL_BG << 16); 1318 voodoofb_init_glyphcache(sc, ri); 1319 } else { 1320 ri->ri_ops.putchar = voodoofb_putchar; 1321 } 1322 } 1323 1324 #if 0 1325 int 1326 voodoofb_load_font(void *v, void *cookie, struct wsdisplay_font *data) 1327 { 1328 1329 return 0; 1330 } 1331 #endif 1332 1333 #ifdef VOODOOFB_ENABLE_INTR 1334 static int 1335 voodoofb_intr(void *arg) 1336 { 1337 struct voodoofb_softc *sc = arg; 1338 1339 voodoo3_write32(sc, V3_STATUS, 0); /* clear interrupts */ 1340 return 1; 1341 } 1342 #endif 1343 1344 /* video mode stuff */ 1345 1346 #define REFFREQ 14318 /* .18 */ 1347 1348 #define ABS(a) ((a < 0) ? -a : a) 1349 1350 static int 1351 voodoofb_calc_pll(int freq, int *f_out, int isBanshee) 1352 { 1353 int m, n, k, best_m, best_n, best_k, f_cur, best_error; 1354 int minm, maxm; 1355 1356 best_error = freq; 1357 best_n = best_m = best_k = 0; 1358 1359 if (isBanshee) { 1360 minm = 24; 1361 maxm = 24; 1362 } else { 1363 minm = 1; 1364 maxm = 57; 1365 /* This used to be 64, alas it seems the last 8 (funny that ?) 1366 * values cause jittering at lower resolutions. I've not done 1367 * any calculations to what the adjustment affects clock ranges, 1368 * but I can still run at 1600x1200@75Hz */ 1369 } 1370 for (n = 1; n < 256; n++) { 1371 f_cur = REFFREQ * (n + 2); 1372 if (f_cur < freq) { 1373 f_cur = f_cur / 3; 1374 if (freq - f_cur < best_error) { 1375 best_error = freq - f_cur; 1376 best_n = n; 1377 best_m = 1; 1378 best_k = 0; 1379 continue; 1380 } 1381 } 1382 for (m = minm; m < maxm; m++) { 1383 for (k = 0; k < 4; k++) { 1384 f_cur = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1385 if (ABS(f_cur - freq) < best_error) { 1386 best_error = ABS(f_cur - freq); 1387 best_n = n; 1388 best_m = m; 1389 best_k = k; 1390 } 1391 } 1392 } 1393 } 1394 n = best_n; 1395 m = best_m; 1396 k = best_k; 1397 *f_out = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1398 return ( n << 8) | (m << 2) | k; 1399 } 1400 1401 static void 1402 voodoofb_setup_monitor(struct voodoofb_softc *sc, const struct videomode *vm) 1403 { 1404 struct voodoo_regs mod; 1405 struct voodoo_regs *mode; 1406 uint32_t horizontal_display_end, horizontal_sync_start, 1407 horizontal_sync_end, horizontal_total, 1408 horizontal_blanking_start, horizontal_blanking_end; 1409 1410 uint32_t vertical_display_enable_end, vertical_sync_start, 1411 vertical_sync_end, vertical_total, vertical_blanking_start, 1412 vertical_blanking_end; 1413 1414 uint32_t wd; // CRTC offset 1415 1416 int i; 1417 1418 uint8_t misc; 1419 1420 memset(&mod, 0, sizeof(mod)); 1421 1422 mode = &mod; 1423 1424 wd = (vm->hdisplay >> 3) - 1; 1425 horizontal_display_end = (vm->hdisplay >> 3) - 1; 1426 horizontal_sync_start = (vm->hsync_start >> 3) - 1; 1427 horizontal_sync_end = (vm->hsync_end >> 3) - 1; 1428 horizontal_total = (vm->htotal >> 3) - 1; 1429 horizontal_blanking_start = horizontal_display_end; 1430 horizontal_blanking_end = horizontal_total; 1431 1432 vertical_display_enable_end = vm->vdisplay - 1; 1433 vertical_sync_start = vm->vsync_start; // - 1; 1434 vertical_sync_end = vm->vsync_end; // - 1; 1435 vertical_total = vm->vtotal - 2; 1436 vertical_blanking_start = vertical_display_enable_end; 1437 vertical_blanking_end = vertical_total; 1438 1439 #if 0 1440 misc = 0x0f | 1441 (vm->hdisplay < 400 ? 0xa0 : 1442 vm->hdisplay < 480 ? 0x60 : 1443 vm->hdisplay < 768 ? 0xe0 : 0x20); 1444 #else 1445 misc = 0x2f; 1446 if (vm->flags & VID_NHSYNC) 1447 misc |= HSYNC_NEG; 1448 if (vm->flags & VID_NVSYNC) 1449 misc |= VSYNC_NEG; 1450 #ifdef VOODOOFB_DEBUG 1451 printf("misc: %02x\n", misc); 1452 #endif 1453 #endif 1454 mode->vr_seq[0] = 3; 1455 mode->vr_seq[1] = 1; 1456 mode->vr_seq[2] = 8; 1457 mode->vr_seq[3] = 0; 1458 mode->vr_seq[4] = 6; 1459 1460 /* crtc regs start */ 1461 mode->vr_crtc[0] = horizontal_total - 4; 1462 mode->vr_crtc[1] = horizontal_display_end; 1463 mode->vr_crtc[2] = horizontal_blanking_start; 1464 mode->vr_crtc[3] = 0x80 | (horizontal_blanking_end & 0x1f); 1465 mode->vr_crtc[4] = horizontal_sync_start; 1466 1467 mode->vr_crtc[5] = ((horizontal_blanking_end & 0x20) << 2) | 1468 (horizontal_sync_end & 0x1f); 1469 mode->vr_crtc[6] = vertical_total; 1470 mode->vr_crtc[7] = ((vertical_sync_start & 0x200) >> 2) | 1471 ((vertical_display_enable_end & 0x200) >> 3) | 1472 ((vertical_total & 0x200) >> 4) | 1473 0x10 | 1474 ((vertical_blanking_start & 0x100) >> 5) | 1475 ((vertical_sync_start & 0x100) >> 6) | 1476 ((vertical_display_enable_end & 0x100) >> 7) | 1477 ((vertical_total & 0x100) >> 8); 1478 1479 mode->vr_crtc[8] = 0; 1480 mode->vr_crtc[9] = 0x40 | 1481 ((vertical_blanking_start & 0x200) >> 4); 1482 1483 mode->vr_crtc[10] = 0; 1484 mode->vr_crtc[11] = 0; 1485 mode->vr_crtc[12] = 0; 1486 mode->vr_crtc[13] = 0; 1487 mode->vr_crtc[14] = 0; 1488 mode->vr_crtc[15] = 0; 1489 1490 mode->vr_crtc[16] = vertical_sync_start; 1491 mode->vr_crtc[17] = (vertical_sync_end & 0x0f) | 0x20; 1492 mode->vr_crtc[18] = vertical_display_enable_end; 1493 mode->vr_crtc[19] = wd; // CRTC offset 1494 mode->vr_crtc[20] = 0; 1495 mode->vr_crtc[21] = vertical_blanking_start; 1496 mode->vr_crtc[22] = vertical_blanking_end + 1; 1497 mode->vr_crtc[23] = 128; 1498 mode->vr_crtc[24] = 255; 1499 1500 /* overflow registers */ 1501 mode->vr_crtc[CRTC_HDISP_EXT] = 1502 (horizontal_total&0x100) >> 8 | 1503 (horizontal_display_end & 0x100) >> 6 | 1504 (horizontal_blanking_start & 0x100) >> 4 | 1505 (horizontal_blanking_end & 0x40) >> 1 | 1506 (horizontal_sync_start & 0x100) >> 2 | 1507 (horizontal_sync_end & 0x20) << 2; 1508 1509 mode->vr_crtc[CRTC_VDISP_EXT] = 1510 (vertical_total & 0x400) >> 10 | 1511 (vertical_display_enable_end & 0x400) >> 8 | /* the manual is contradictory here */ 1512 (vertical_blanking_start & 0x400) >> 6 | 1513 (vertical_blanking_end & 0x400) >> 4; 1514 1515 /* attr regs start */ 1516 mode->vr_attr[0] = 0; 1517 mode->vr_attr[1] = 0; 1518 mode->vr_attr[2] = 0; 1519 mode->vr_attr[3] = 0; 1520 mode->vr_attr[4] = 0; 1521 mode->vr_attr[5] = 0; 1522 mode->vr_attr[6] = 0; 1523 mode->vr_attr[7] = 0; 1524 mode->vr_attr[8] = 0; 1525 mode->vr_attr[9] = 0; 1526 mode->vr_attr[10] = 0; 1527 mode->vr_attr[11] = 0; 1528 mode->vr_attr[12] = 0; 1529 mode->vr_attr[13] = 0; 1530 mode->vr_attr[14] = 0; 1531 mode->vr_attr[15] = 0; 1532 mode->vr_attr[16] = 1; 1533 mode->vr_attr[17] = 0; 1534 mode->vr_attr[18] = 15; 1535 mode->vr_attr[19] = 0; 1536 /* attr regs end */ 1537 1538 /* graph regs start */ 1539 mode->vr_graph[0] = 159; 1540 mode->vr_graph[1] = 127; 1541 mode->vr_graph[2] = 127; 1542 mode->vr_graph[3] = 131; 1543 mode->vr_graph[4] = 130; 1544 mode->vr_graph[5] = 142; 1545 mode->vr_graph[6] = 30; 1546 mode->vr_graph[7] = 245; 1547 mode->vr_graph[8] = 0; 1548 1549 vga_outb(sc, MISC_W, misc | 0x01); 1550 1551 for(i = 0; i < 5; i++) 1552 voodoo3_write_seq(sc, i, mode->vr_seq[i]); 1553 for (i = 0; i < CRTC_PCI_READBACK; i ++) 1554 voodoo3_write_crtc(sc, i, mode->vr_crtc[i]); 1555 for (i = 0; i < 0x14; i ++) 1556 voodoo3_write_attr(sc, i, mode->vr_attr[i]); 1557 for (i = 0; i < 0x09; i ++) 1558 voodoo3_write_gra(sc, i, mode->vr_graph[i]); 1559 } 1560 1561 static void 1562 voodoofb_set_videomode(struct voodoofb_softc *sc, 1563 const struct videomode *vm) 1564 { 1565 uint32_t miscinit0 = 0; 1566 int vidpll, fout; 1567 uint32_t vidproc = VIDPROCDEFAULT; 1568 uint32_t bpp = 1; /* for now */ 1569 uint32_t bytes_per_row = vm->hdisplay * bpp; 1570 1571 sc->sc_bits_per_pixel = bpp << 3; 1572 sc->sc_width = vm->hdisplay; 1573 sc->sc_height = vm->vdisplay; 1574 sc->sc_linebytes = bytes_per_row; 1575 1576 voodoofb_setup_monitor(sc, vm); 1577 1578 vidproc &= ~(0x1c0000); /* clear bits 18 to 20, bpp in vidproccfg */ 1579 /* enable bits 18 to 20 to the required bpp */ 1580 vidproc |= ((bpp - 1) << VIDCFG_PIXFMT_SHIFT); 1581 1582 vidpll = voodoofb_calc_pll(vm->dot_clock, &fout, 0); 1583 1584 #ifdef VOODOOFB_DEBUG 1585 uint32_t vp; 1586 vp = voodoo3_read32(sc, VIDPROCCFG); 1587 printf("old vidproc: %08x\n", vp); 1588 printf("pll: %08x %d\n", vidpll, fout); 1589 #endif 1590 /* bit 10 of vidproccfg, is enabled or disabled as needed */ 1591 switch (bpp) { 1592 case 1: 1593 /* 1594 * bit 10 off for palettized modes only, off means 1595 * palette is used 1596 */ 1597 vidproc &= ~(1 << 10); 1598 break; 1599 #if 0 1600 case 2: 1601 #if __POWERPC__ 1602 miscinit0 = 0xc0000000; 1603 #endif 1604 /* bypass palette for 16bit modes */ 1605 vidproc |= (1 << 10); 1606 break; 1607 case 4: 1608 #if __POWERPC__ 1609 miscinit0 = 0x40000000; 1610 #endif 1611 vidproc |= (1 << 10); /* Same for 32bit modes */ 1612 break; 1613 #endif 1614 default: 1615 printf("We support only 8 bit for now\n"); 1616 return; 1617 } 1618 1619 voodoofb_wait_idle(sc); 1620 1621 voodoo3_write32(sc, MISCINIT1, voodoo3_read32(sc, MISCINIT1) | 0x01); 1622 1623 voodoo3_make_room(sc, 4); 1624 voodoo3_write32(sc, VGAINIT0, 4928); 1625 voodoo3_write32(sc, DACMODE, 0); 1626 voodoo3_write32(sc, VIDDESKSTRIDE, bytes_per_row); 1627 voodoo3_write32(sc, PLLCTRL0, vidpll); 1628 1629 voodoo3_make_room(sc, 5); 1630 voodoo3_write32(sc, VIDSCREENSIZE, sc->sc_width | 1631 (sc->sc_height << 12)); 1632 voodoo3_write32(sc, VIDDESKSTART, 0); 1633 1634 vidproc &= ~VIDCFG_HWCURSOR_ENABLE; 1635 voodoo3_write32(sc, VIDPROCCFG, vidproc); 1636 1637 voodoo3_write32(sc, VGAINIT1, 0); 1638 voodoo3_write32(sc, MISCINIT0, miscinit0); 1639 #ifdef VOODOOFB_DEBUG 1640 printf("vidproc: %08x\n", vidproc); 1641 #endif 1642 voodoo3_make_room(sc, 8); 1643 voodoo3_write32(sc, SRCBASE, 0); 1644 voodoo3_write32(sc, DSTBASE, 0); 1645 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1646 voodoo3_write32(sc, CLIP0MIN, 0); 1647 voodoo3_write32(sc, CLIP0MAX, 0x0fff0fff); 1648 voodoo3_write32(sc, CLIP1MIN, 0); 1649 voodoo3_write32(sc, CLIP1MAX, 0x0fff0fff); 1650 voodoo3_write32(sc, SRCXY, 0); 1651 voodoofb_wait_idle(sc); 1652 printf("%s: switched to %dx%d, %d bit\n", device_xname(sc->sc_dev), 1653 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 1654 sc->sc_numglyphs = 0; /* invalidate the glyph cache */ 1655 } 1656 1657 static void 1658 voodoofb_init(struct voodoofb_softc *sc) 1659 { 1660 /* XXX */ 1661 uint32_t vgainit0 = 0; 1662 uint32_t vidcfg = 0; 1663 1664 #ifdef VOODOOFB_DEBUG 1665 printf("initializing engine..."); 1666 #endif 1667 vgainit0 = voodoo3_read32(sc, VGAINIT0); 1668 #ifdef VOODOOFB_DEBUG 1669 printf("vga: %08x", vgainit0); 1670 #endif 1671 vgainit0 |= 1672 VGAINIT0_8BIT_DAC | 1673 VGAINIT0_EXT_ENABLE | 1674 VGAINIT0_WAKEUP_3C3 | 1675 VGAINIT0_ALT_READBACK | 1676 VGAINIT0_EXTSHIFTOUT; 1677 1678 vidcfg = voodoo3_read32(sc, VIDPROCCFG); 1679 #ifdef VOODOOFB_DEBUG 1680 printf(" vidcfg: %08x\n", vidcfg); 1681 #endif 1682 vidcfg |= 1683 VIDCFG_VIDPROC_ENABLE | 1684 VIDCFG_DESK_ENABLE; 1685 vidcfg &= ~VIDCFG_HWCURSOR_ENABLE; 1686 1687 voodoo3_make_room(sc, 2); 1688 1689 voodoo3_write32(sc, VGAINIT0, vgainit0); 1690 voodoo3_write32(sc, VIDPROCCFG, vidcfg); 1691 1692 voodoo3_make_room(sc, 8); 1693 voodoo3_write32(sc, SRCBASE, 0); 1694 voodoo3_write32(sc, DSTBASE, 0); 1695 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1696 voodoo3_write32(sc, CLIP0MIN, 0); 1697 voodoo3_write32(sc, CLIP0MAX, 0x1fff1fff); 1698 voodoo3_write32(sc, CLIP1MIN, 0); 1699 voodoo3_write32(sc, CLIP1MAX, 0x1fff1fff); 1700 voodoo3_write32(sc, SRCXY, 0); 1701 1702 voodoofb_wait_idle(sc); 1703 } 1704 1705 #define MAX_HRES 1700 /* 1706 * XXX in theory we can go higher but I 1707 * couldn't get anything above 1680 x 1200 1708 * to work, so until I find out why, it's 1709 * disabled so people won't end up with a 1710 * blank screen 1711 */ 1712 #define MODE_IS_VALID(m, mclk) (((m)->dot_clock <= (mclk)) && \ 1713 ((m)->hdisplay < MAX_HRES)) 1714 static void 1715 voodoofb_setup_i2c(struct voodoofb_softc *sc) 1716 { 1717 int i; 1718 1719 /* Fill in the i2c tag */ 1720 sc->sc_i2c.ic_cookie = sc; 1721 sc->sc_i2c.ic_acquire_bus = voodoofb_i2c_acquire_bus; 1722 sc->sc_i2c.ic_release_bus = voodoofb_i2c_release_bus; 1723 sc->sc_i2c.ic_send_start = voodoofb_i2c_send_start; 1724 sc->sc_i2c.ic_send_stop = voodoofb_i2c_send_stop; 1725 sc->sc_i2c.ic_initiate_xfer = voodoofb_i2c_initiate_xfer; 1726 sc->sc_i2c.ic_read_byte = voodoofb_i2c_read_byte; 1727 sc->sc_i2c.ic_write_byte = voodoofb_i2c_write_byte; 1728 sc->sc_i2c.ic_exec = NULL; 1729 1730 sc->sc_i2creg = voodoo3_read32(sc, VIDSERPARPORT); 1731 #ifdef VOODOOFB_DEBUG 1732 printf("data: %08x\n", sc->sc_i2creg); 1733 #endif 1734 sc->sc_i2creg |= VSP_ENABLE_IIC0; 1735 sc->sc_i2creg &= ~(VSP_SDA0_OUT | VSP_SCL0_OUT); 1736 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg); 1737 1738 /* zero out the EDID buffer */ 1739 memset(sc->sc_edid_data, 0, 128); 1740 1741 /* Some monitors don't respond first time */ 1742 i = 0; 1743 while (sc->sc_edid_data[1] == 0 && i++ < 3) 1744 ddc_read_edid(&sc->sc_i2c, sc->sc_edid_data, 128); 1745 if (i < 3) { 1746 if (edid_parse(sc->sc_edid_data, &sc->sc_edid_info) != -1) { 1747 #ifdef VOODOOFB_DEBUG 1748 edid_print(&sc->sc_edid_info); 1749 #endif 1750 /* 1751 * Now pick a mode. 1752 * How do we know our max. pixel clock? 1753 * All Voodoo3 should support at least 250MHz. 1754 * All Voodoo3 I've seen so far have at least 8MB 1755 * which we're not going to exhaust either in 8bit. 1756 */ 1757 if ((sc->sc_edid_info.edid_preferred_mode != NULL)) { 1758 struct videomode *m = 1759 sc->sc_edid_info.edid_preferred_mode; 1760 if (MODE_IS_VALID(m, sc->sc_max_clock)) { 1761 sc->sc_videomode = m; 1762 } else { 1763 aprint_error_dev(sc->sc_dev, 1764 "unable to use preferred mode\n"); 1765 } 1766 } 1767 /* 1768 * if we can't use the preferred mode go look for the 1769 * best one we can support 1770 */ 1771 if (sc->sc_videomode == NULL) { 1772 int n = 0; 1773 struct videomode *m = 1774 sc->sc_edid_info.edid_modes; 1775 1776 sort_modes(sc->sc_edid_info.edid_modes, 1777 &sc->sc_edid_info.edid_preferred_mode, 1778 sc->sc_edid_info.edid_nmodes); 1779 while ((sc->sc_videomode == NULL) && 1780 (n < sc->sc_edid_info.edid_nmodes)) { 1781 if (MODE_IS_VALID(&m[n], 1782 sc->sc_max_clock)) { 1783 sc->sc_videomode = &m[n]; 1784 } 1785 n++; 1786 } 1787 } 1788 } 1789 } 1790 } 1791 1792 /* I2C bitbanging */ 1793 static void voodoofb_i2cbb_set_bits(void *cookie, uint32_t bits) 1794 { 1795 struct voodoofb_softc *sc = cookie; 1796 uint32_t out; 1797 1798 out = bits >> 2; /* bitmasks match the IN bits */ 1799 1800 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg | out); 1801 } 1802 1803 static void voodoofb_i2cbb_set_dir(void *cookie, uint32_t dir) 1804 { 1805 /* Nothing to do */ 1806 } 1807 1808 static uint32_t voodoofb_i2cbb_read(void *cookie) 1809 { 1810 struct voodoofb_softc *sc = cookie; 1811 uint32_t bits; 1812 1813 bits = voodoo3_read32(sc, VIDSERPARPORT); 1814 1815 return bits; 1816 } 1817 1818 /* higher level I2C stuff */ 1819 static int 1820 voodoofb_i2c_acquire_bus(void *cookie, int flags) 1821 { 1822 /* private bus */ 1823 return (0); 1824 } 1825 1826 static void 1827 voodoofb_i2c_release_bus(void *cookie, int flags) 1828 { 1829 /* private bus */ 1830 } 1831 1832 static int 1833 voodoofb_i2c_send_start(void *cookie, int flags) 1834 { 1835 return (i2c_bitbang_send_start(cookie, flags, &voodoofb_i2cbb_ops)); 1836 } 1837 1838 static int 1839 voodoofb_i2c_send_stop(void *cookie, int flags) 1840 { 1841 1842 return (i2c_bitbang_send_stop(cookie, flags, &voodoofb_i2cbb_ops)); 1843 } 1844 1845 static int 1846 voodoofb_i2c_initiate_xfer(void *cookie, i2c_addr_t addr, int flags) 1847 { 1848 1849 return (i2c_bitbang_initiate_xfer(cookie, addr, flags, 1850 &voodoofb_i2cbb_ops)); 1851 } 1852 1853 static int 1854 voodoofb_i2c_read_byte(void *cookie, uint8_t *valp, int flags) 1855 { 1856 return (i2c_bitbang_read_byte(cookie, valp, flags, &voodoofb_i2cbb_ops)); 1857 } 1858 1859 static int 1860 voodoofb_i2c_write_byte(void *cookie, uint8_t val, int flags) 1861 { 1862 return (i2c_bitbang_write_byte(cookie, val, flags, &voodoofb_i2cbb_ops)); 1863 } 1864 1865 /* glyph cache */ 1866 static void 1867 voodoofb_init_glyphcache(struct voodoofb_softc *sc, struct rasops_info *ri) 1868 { 1869 int bufsize, i; 1870 1871 if (sc->sc_numglyphs != 0) { 1872 /* re-initialize */ 1873 if (ri->ri_font == sc->sc_font) { 1874 /* nothing to do, keep using the same cache */ 1875 return; 1876 } 1877 } 1878 sc->sc_cache = (ri->ri_width * ri->ri_stride + 3) & 0xfffffffc; 1879 bufsize = sc->sc_memsize - sc->sc_cache; 1880 sc->sc_numglyphs = bufsize / ri->ri_fontscale; 1881 sc->sc_usedglyphs = 0; 1882 for (i = 0; i < 256; i++) { 1883 sc->sc_glyphs_kernattr[i] = 0; 1884 sc->sc_glyphs_defattr[i] = 0; 1885 } 1886 sc->sc_fmt = ri->ri_font->fontwidth | FMT_8BIT; 1887 } 1888