1 /* $NetBSD: voodoofb.c,v 1.47 2013/11/19 06:37:42 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 1.47 2013/11/19 06:37:42 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 98 /* glyph cache */ 99 long sc_defattr, sc_kernattr; 100 uint32_t sc_glyphs_defattr[256]; 101 uint32_t sc_glyphs_kernattr[256]; 102 int sc_numglyphs, sc_usedglyphs; 103 uint32_t sc_cache; /* offset where cache starts */ 104 uint32_t sc_fmt; /* *fmt register */ 105 void *sc_font; 106 107 /* i2c stuff */ 108 struct i2c_controller sc_i2c; 109 uint8_t sc_edid_data[128]; 110 struct edid_info sc_edid_info; 111 uint32_t sc_i2creg; 112 113 int sc_mode; 114 uint32_t sc_bg; 115 116 u_char sc_cmap_red[256]; 117 u_char sc_cmap_green[256]; 118 u_char sc_cmap_blue[256]; 119 int sc_dacw; 120 121 struct vcons_data vd; 122 }; 123 124 struct voodoo_regs { 125 uint8_t vr_crtc[31]; 126 uint8_t vr_graph[9]; 127 uint8_t vr_attr[21]; 128 uint8_t vr_seq[5]; 129 }; 130 131 static struct vcons_screen voodoofb_console_screen; 132 133 static int voodoofb_match(device_t, cfdata_t, void *); 134 static void voodoofb_attach(device_t, device_t, void *); 135 136 static int voodoofb_drm_print(void *, const char *); 137 static int voodoofb_drm_unmap(struct voodoofb_softc *); 138 static int voodoofb_drm_map(struct voodoofb_softc *); 139 140 CFATTACH_DECL_NEW(voodoofb, sizeof(struct voodoofb_softc), voodoofb_match, 141 voodoofb_attach, NULL, NULL); 142 143 static bool voodoofb_is_console(struct voodoofb_softc *); 144 static void voodoofb_init(struct voodoofb_softc *); 145 146 static void voodoofb_cursor(void *, int, int, int); 147 static void voodoofb_putchar(void *, int, int, u_int, long); 148 static void voodoofb_putchar_aa(void *, int, int, u_int, long); 149 static void voodoofb_copycols(void *, int, int, int, int); 150 static void voodoofb_erasecols(void *, int, int, int, long); 151 static void voodoofb_copyrows(void *, int, int, int); 152 static void voodoofb_eraserows(void *, int, int, long); 153 154 #if 0 155 static int voodoofb_allocattr(void *, int, int, int, long *); 156 static void voodoofb_scroll(void *, void *, int); 157 static int voodoofb_load_font(void *, void *, struct wsdisplay_font *); 158 #endif 159 160 static int voodoofb_putcmap(struct voodoofb_softc *, 161 struct wsdisplay_cmap *); 162 static int voodoofb_getcmap(struct voodoofb_softc *, 163 struct wsdisplay_cmap *); 164 static int voodoofb_putpalreg(struct voodoofb_softc *, uint8_t, uint8_t, 165 uint8_t, uint8_t); 166 static void voodoofb_bitblt(struct voodoofb_softc *, int, int, int, int, 167 int, int); 168 static void voodoofb_rectfill(struct voodoofb_softc *, int, int, int, int, 169 int); 170 static void voodoofb_rectinvert(struct voodoofb_softc *, int, int, int, 171 int); 172 static void voodoofb_setup_mono(struct voodoofb_softc *, int, int, int, 173 int, uint32_t, uint32_t); 174 static void voodoofb_feed_line(struct voodoofb_softc *, int, uint8_t *); 175 176 static void voodoofb_wait_idle(struct voodoofb_softc *); 177 static void voodoofb_init_glyphcache(struct voodoofb_softc *, 178 struct rasops_info *); 179 180 #ifdef VOODOOFB_ENABLE_INTR 181 static int voodoofb_intr(void *); 182 #endif 183 184 static void voodoofb_set_videomode(struct voodoofb_softc *, 185 const struct videomode *); 186 187 struct wsscreen_descr voodoofb_defaultscreen = { 188 "default", 189 0, 0, 190 NULL, 191 8, 16, 192 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 193 NULL, 194 }; 195 196 const struct wsscreen_descr *_voodoofb_scrlist[] = { 197 &voodoofb_defaultscreen, 198 /* XXX other formats, graphics screen? */ 199 }; 200 201 struct wsscreen_list voodoofb_screenlist = { 202 sizeof(_voodoofb_scrlist) / sizeof(struct wsscreen_descr *), _voodoofb_scrlist 203 }; 204 205 static int voodoofb_ioctl(void *, void *, u_long, void *, int, 206 struct lwp *); 207 static paddr_t voodoofb_mmap(void *, void *, off_t, int); 208 209 static void voodoofb_clearscreen(struct voodoofb_softc *); 210 static void voodoofb_init_screen(void *, struct vcons_screen *, int, 211 long *); 212 213 214 struct wsdisplay_accessops voodoofb_accessops = { 215 voodoofb_ioctl, 216 voodoofb_mmap, 217 NULL, 218 NULL, 219 NULL, 220 NULL, /* load_font */ 221 NULL, /* polls */ 222 NULL, /* scroll */ 223 }; 224 225 /* I2C glue */ 226 static int voodoofb_i2c_acquire_bus(void *, int); 227 static void voodoofb_i2c_release_bus(void *, int); 228 static int voodoofb_i2c_send_start(void *, int); 229 static int voodoofb_i2c_send_stop(void *, int); 230 static int voodoofb_i2c_initiate_xfer(void *, i2c_addr_t, int); 231 static int voodoofb_i2c_read_byte(void *, uint8_t *, int); 232 static int voodoofb_i2c_write_byte(void *, uint8_t, int); 233 234 /* I2C bitbang glue */ 235 static void voodoofb_i2cbb_set_bits(void *, uint32_t); 236 static void voodoofb_i2cbb_set_dir(void *, uint32_t); 237 static uint32_t voodoofb_i2cbb_read(void *); 238 239 static void voodoofb_setup_i2c(struct voodoofb_softc *); 240 241 static const struct i2c_bitbang_ops voodoofb_i2cbb_ops = { 242 voodoofb_i2cbb_set_bits, 243 voodoofb_i2cbb_set_dir, 244 voodoofb_i2cbb_read, 245 { 246 VSP_SDA0_IN, 247 VSP_SCL0_IN, 248 0, 249 0 250 } 251 }; 252 253 extern const u_char rasops_cmap[768]; 254 255 /* 256 * Inline functions for getting access to register aperture. 257 */ 258 static inline void 259 voodoo3_write32(struct voodoofb_softc *sc, uint32_t reg, uint32_t val) 260 { 261 bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val); 262 } 263 264 static inline void 265 voodoo3_write32s(struct voodoofb_softc *sc, uint32_t reg, uint32_t val) 266 { 267 bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val); 268 } 269 static inline uint32_t 270 voodoo3_read32(struct voodoofb_softc *sc, uint32_t reg) 271 { 272 return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg); 273 } 274 275 static inline void 276 voodoo3_write_crtc(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 277 { 278 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, CRTC_INDEX - 0x300, reg); 279 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, CRTC_DATA - 0x300, val); 280 } 281 282 static inline void 283 voodoo3_write_seq(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 284 { 285 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, SEQ_INDEX - 0x300, reg); 286 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, SEQ_DATA - 0x300, val); 287 } 288 289 static inline void 290 voodoo3_write_gra(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 291 { 292 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, GRA_INDEX - 0x300, reg); 293 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, GRA_DATA - 0x300, val); 294 } 295 296 static inline void 297 voodoo3_write_attr(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 298 { 299 uint8_t index; 300 301 (void)bus_space_read_1(sc->sc_ioregt, sc->sc_ioregh, IS1_R - 0x300); 302 index = bus_space_read_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300); 303 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, reg); 304 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, val); 305 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, index); 306 } 307 308 static inline void 309 vga_outb(struct voodoofb_softc *sc, uint32_t reg, uint8_t val) 310 { 311 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, reg - 0x300, val); 312 } 313 314 /* wait until there's room for len bytes in the FIFO */ 315 static inline void 316 voodoo3_make_room(struct voodoofb_softc *sc, int len) 317 { 318 while ((voodoo3_read32(sc, STATUS) & 0x1f) < len); 319 } 320 321 static void 322 voodoofb_wait_idle(struct voodoofb_softc *sc) 323 { 324 int i = 0; 325 326 voodoo3_make_room(sc, 1); 327 voodoo3_write32(sc, COMMAND_3D, COMMAND_3D_NOP); 328 329 while (1) { 330 i = (voodoo3_read32(sc, STATUS) & STATUS_BUSY) ? 0 : i + 1; 331 if(i == 3) break; 332 } 333 } 334 335 static int 336 voodoofb_match(device_t parent, cfdata_t match, void *aux) 337 { 338 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 339 340 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 341 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 342 return 0; 343 if ((PCI_VENDOR(pa->pa_id)==PCI_VENDOR_3DFX) && 344 (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_VOODOO3)) 345 return 100; 346 347 if ((PCI_VENDOR(pa->pa_id)==PCI_VENDOR_3DFX) && 348 (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_BANSHEE)) 349 return 100; 350 return 0; 351 } 352 353 static void 354 voodoofb_attach(device_t parent, device_t self, void *aux) 355 { 356 struct voodoofb_softc *sc = device_private(self); 357 struct pci_attach_args *pa = aux; 358 struct wsemuldisplaydev_attach_args aa; 359 struct rasops_info *ri; 360 #ifdef VOODOOFB_ENABLE_INTR 361 pci_intr_handle_t ih; 362 const char *intrstr; 363 #endif 364 ulong defattr; 365 int console, width, height, i; 366 prop_dictionary_t dict; 367 int linebytes, depth, flags; 368 uint32_t bg, fg, ul; 369 370 sc->sc_dev = self; 371 372 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 373 sc->sc_pc = pa->pa_pc; 374 sc->sc_pcitag = pa->pa_tag; 375 sc->sc_dacw = -1; 376 pci_aprint_devinfo(pa, NULL); 377 378 sc->sc_memt = pa->pa_memt; 379 sc->sc_iot = pa->pa_iot; 380 sc->sc_pa = *pa; 381 382 if (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_BANSHEE) 383 sc->sc_max_clock = MAX_CLOCK_VB; 384 else 385 sc->sc_max_clock = MAX_CLOCK_V3; 386 387 /* the framebuffer */ 388 if (pci_mapreg_info(sc->sc_pc, sc->sc_pcitag, 0x14, PCI_MAPREG_TYPE_MEM, 389 &sc->sc_fb, &sc->sc_fbsize, &flags)) { 390 aprint_error_dev(self, "failed to map the frame buffer.\n"); 391 } 392 sc->sc_memsize = sc->sc_fbsize >> 1; /* VRAM aperture is 2x VRAM */ 393 394 /* memory-mapped registers */ 395 if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 396 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 397 aprint_error_dev(self, "failed to map memory-mapped registers.\n"); 398 } 399 400 /* IO-mapped registers */ 401 if (pci_mapreg_map(pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 402 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 403 &sc->sc_ioregsize)) { 404 aprint_error_dev(self, "failed to map IO-mapped registers.\n"); 405 } 406 voodoofb_init(sc); 407 408 /* we should read these from the chip instead of depending on OF */ 409 width = height = -1; 410 411 dict = device_properties(self); 412 if (!prop_dictionary_get_uint32(dict, "width", &width)) { 413 aprint_error_dev(self, "no width property\n"); 414 return; 415 } 416 if (!prop_dictionary_get_uint32(dict, "height", &height)) { 417 aprint_error_dev(self, "no height property\n"); 418 return; 419 } 420 if (!prop_dictionary_get_uint32(dict, "depth", &depth)) { 421 aprint_error_dev(self, "no depth property\n"); 422 return; 423 } 424 linebytes = width; /* XXX */ 425 426 if (width == -1 || height == -1) 427 return; 428 429 sc->sc_width = width; 430 sc->sc_height = height; 431 sc->sc_bits_per_pixel = depth; 432 sc->sc_linebytes = linebytes; 433 printf("%s: initial resolution %dx%d, %d bit\n", device_xname(self), 434 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 435 436 sc->sc_videomode = NULL; 437 voodoofb_setup_i2c(sc); 438 439 /* XXX this should at least be configurable via kernel config */ 440 if (sc->sc_videomode == NULL) { 441 sc->sc_videomode = pick_mode_by_ref(width, height, 60); 442 } 443 444 voodoofb_set_videomode(sc, sc->sc_videomode); 445 446 sc->sc_font = NULL; 447 448 vcons_init(&sc->vd, sc, &voodoofb_defaultscreen, &voodoofb_accessops); 449 sc->vd.init_screen = voodoofb_init_screen; 450 451 console = voodoofb_is_console(sc); 452 453 ri = &voodoofb_console_screen.scr_ri; 454 if (console) { 455 vcons_init_screen(&sc->vd, &voodoofb_console_screen, 1, 456 &defattr); 457 voodoofb_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 458 459 voodoofb_defaultscreen.textops = &ri->ri_ops; 460 voodoofb_defaultscreen.capabilities = ri->ri_caps; 461 voodoofb_defaultscreen.nrows = ri->ri_rows; 462 voodoofb_defaultscreen.ncols = ri->ri_cols; 463 wsdisplay_cnattach(&voodoofb_defaultscreen, ri, 0, 0, defattr); 464 } else { 465 if (voodoofb_console_screen.scr_ri.ri_rows == 0) { 466 /* do some minimal setup to avoid weirdnesses later */ 467 vcons_init_screen(&sc->vd, &voodoofb_console_screen, 468 1, &defattr); 469 } else 470 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 471 } 472 473 printf("%s: %d MB aperture at 0x%08x, %d MB registers at 0x%08x\n", 474 device_xname(self), (u_int)(sc->sc_fbsize >> 20), 475 (u_int)sc->sc_fb, (u_int)(sc->sc_regsize >> 20), 476 (u_int)sc->sc_regs); 477 #ifdef VOODOOFB_DEBUG 478 printf("fb: %08lx\n", (ulong)ri->ri_bits); 479 #endif 480 481 if (sc->sc_bits_per_pixel == 8) { 482 uint8_t tmp; 483 for (i = 0; i < 256; i++) { 484 tmp = i & 0xe0; 485 /* 486 * replicate bits so 0xe0 maps to a red value of 0xff 487 * in order to make white look actually white 488 */ 489 tmp |= (tmp >> 3) | (tmp >> 6); 490 sc->sc_cmap_red[i] = tmp; 491 492 tmp = (i & 0x1c) << 3; 493 tmp |= (tmp >> 3) | (tmp >> 6); 494 sc->sc_cmap_green[i] = tmp; 495 496 tmp = (i & 0x03) << 6; 497 tmp |= tmp >> 2; 498 tmp |= tmp >> 4; 499 sc->sc_cmap_blue[i] = tmp; 500 501 voodoofb_putpalreg(sc, i, sc->sc_cmap_red[i], 502 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 503 } 504 } else { 505 /* linear ramp */ 506 for (i = 0; i < 256; i++) { 507 sc->sc_cmap_red[i] = i; 508 sc->sc_cmap_green[i] = i; 509 sc->sc_cmap_blue[i] = i; 510 511 voodoofb_putpalreg(sc, i, sc->sc_cmap_red[i], 512 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 513 } 514 } 515 516 #ifdef VOODOOFB_ENABLE_INTR 517 /* Interrupt. We don't use it for anything yet */ 518 if (pci_intr_map(pa, &ih)) { 519 aprint_error_dev(self, "failed to map interrupt\n"); 520 return; 521 } 522 523 intrstr = pci_intr_string(sc->sc_pc, ih); 524 sc->sc_ih = pci_intr_establish(sc->sc_pc, ih, IPL_NET, voodoofb_intr, 525 sc); 526 if (sc->sc_ih == NULL) { 527 aprint_error_dev(self, "failed to establish interrupt"); 528 if (intrstr != NULL) 529 aprint_error(" at %s", intrstr); 530 aprint_error("\n"); 531 return; 532 } 533 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 534 #endif 535 536 rasops_unpack_attr(defattr, &fg, &bg, &ul); 537 sc->sc_bg = ri->ri_devcmap[bg]; 538 voodoofb_clearscreen(sc); 539 540 if (console) 541 vcons_replay_msgbuf(&voodoofb_console_screen); 542 aa.console = console; 543 aa.scrdata = &voodoofb_screenlist; 544 aa.accessops = &voodoofb_accessops; 545 aa.accesscookie = &sc->vd; 546 547 config_found(self, &aa, wsemuldisplaydevprint); 548 config_found_ia(self, "drm", aux, voodoofb_drm_print); 549 } 550 551 static int 552 voodoofb_drm_print(void *opaque, const char *pnp) 553 { 554 if (pnp) 555 aprint_normal("drm at %s", pnp); 556 557 return UNCONF; 558 } 559 560 static int 561 voodoofb_drm_unmap(struct voodoofb_softc *sc) 562 { 563 printf("%s: releasing bus resources\n", device_xname(sc->sc_dev)); 564 565 bus_space_unmap(sc->sc_ioregt, sc->sc_ioregh, sc->sc_ioregsize); 566 bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsize); 567 568 return 0; 569 } 570 571 static int 572 voodoofb_drm_map(struct voodoofb_softc *sc) 573 { 574 575 /* memory-mapped registers */ 576 if (pci_mapreg_map(&sc->sc_pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 577 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 578 aprint_error_dev(sc->sc_dev, "failed to map memory-mapped registers.\n"); 579 } 580 581 /* IO-mapped registers */ 582 if (pci_mapreg_map(&sc->sc_pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 583 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 584 &sc->sc_ioregsize)) { 585 aprint_error_dev(sc->sc_dev, "failed to map IO-mapped registers.\n"); 586 } 587 588 voodoofb_init(sc); 589 /* XXX this should at least be configurable via kernel config */ 590 voodoofb_set_videomode(sc, sc->sc_videomode); 591 592 return 0; 593 } 594 595 static int 596 voodoofb_putpalreg(struct voodoofb_softc *sc, uint8_t index, uint8_t r, 597 uint8_t g, uint8_t b) 598 { 599 uint32_t color; 600 601 sc->sc_cmap_red[index] = r; 602 sc->sc_cmap_green[index] = g; 603 sc->sc_cmap_blue[index] = b; 604 605 color = (r << 16) | (g << 8) | b; 606 voodoo3_make_room(sc, 2); 607 voodoo3_write32(sc, DACADDR, index); 608 voodoo3_write32(sc, DACDATA, color); 609 610 return 0; 611 } 612 613 static int 614 voodoofb_putcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 615 { 616 u_char *r, *g, *b; 617 u_int index = cm->index; 618 u_int count = cm->count; 619 int i, error; 620 u_char rbuf[256], gbuf[256], bbuf[256]; 621 622 #ifdef VOODOOFB_DEBUG 623 printf("putcmap: %d %d\n",index, count); 624 #endif 625 if (cm->index >= 256 || cm->count > 256 || 626 (cm->index + cm->count) > 256) 627 return EINVAL; 628 error = copyin(cm->red, &rbuf[index], count); 629 if (error) 630 return error; 631 error = copyin(cm->green, &gbuf[index], count); 632 if (error) 633 return error; 634 error = copyin(cm->blue, &bbuf[index], count); 635 if (error) 636 return error; 637 638 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 639 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 640 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 641 642 r = &sc->sc_cmap_red[index]; 643 g = &sc->sc_cmap_green[index]; 644 b = &sc->sc_cmap_blue[index]; 645 646 for (i = 0; i < count; i++) { 647 voodoofb_putpalreg(sc, index, *r, *g, *b); 648 index++; 649 r++, g++, b++; 650 } 651 return 0; 652 } 653 654 static int 655 voodoofb_getcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 656 { 657 u_int index = cm->index; 658 u_int count = cm->count; 659 int error; 660 661 if (index >= 255 || count > 256 || index + count > 256) 662 return EINVAL; 663 664 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 665 if (error) 666 return error; 667 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 668 if (error) 669 return error; 670 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 671 if (error) 672 return error; 673 674 return 0; 675 } 676 677 static bool 678 voodoofb_is_console(struct voodoofb_softc *sc) 679 { 680 prop_dictionary_t dict; 681 bool console; 682 683 dict = device_properties(sc->sc_dev); 684 prop_dictionary_get_bool(dict, "is_console", &console); 685 return console; 686 } 687 688 static void 689 voodoofb_clearscreen(struct voodoofb_softc *sc) 690 { 691 voodoofb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, sc->sc_bg); 692 } 693 694 /* 695 * wsdisplay_emulops 696 */ 697 698 static void 699 voodoofb_cursor(void *cookie, int on, int row, int col) 700 { 701 struct rasops_info *ri = cookie; 702 struct vcons_screen *scr = ri->ri_hw; 703 struct voodoofb_softc *sc = scr->scr_cookie; 704 int x, y, wi, he; 705 706 wi = ri->ri_font->fontwidth; 707 he = ri->ri_font->fontheight; 708 709 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 710 x = ri->ri_ccol * wi + ri->ri_xorigin; 711 y = ri->ri_crow * he + ri->ri_yorigin; 712 if (ri->ri_flg & RI_CURSOR) { 713 voodoofb_rectinvert(sc, x, y, wi, he); 714 ri->ri_flg &= ~RI_CURSOR; 715 } 716 ri->ri_crow = row; 717 ri->ri_ccol = col; 718 if (on) 719 { 720 x = ri->ri_ccol * wi + ri->ri_xorigin; 721 y = ri->ri_crow * he + ri->ri_yorigin; 722 voodoofb_rectinvert(sc, x, y, wi, he); 723 ri->ri_flg |= RI_CURSOR; 724 } 725 } else { 726 ri->ri_flg &= ~RI_CURSOR; 727 ri->ri_crow = row; 728 ri->ri_ccol = col; 729 } 730 } 731 732 #if 0 733 int 734 voodoofb_mapchar(void *cookie, int uni, u_int *index) 735 { 736 return 0; 737 } 738 #endif 739 740 static void 741 voodoofb_putchar(void *cookie, int row, int col, u_int c, long attr) 742 { 743 struct rasops_info *ri = cookie; 744 struct wsdisplay_font *font = PICK_FONT(ri, c); 745 struct vcons_screen *scr = ri->ri_hw; 746 struct voodoofb_softc *sc = scr->scr_cookie; 747 748 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 749 uint8_t *data; 750 int fg, bg, uc, i; 751 int x, y, wi, he; 752 753 wi = font->fontwidth; 754 he = font->fontheight; 755 756 if (!CHAR_IN_FONT(c, font)) 757 return; 758 bg = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 759 fg = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 760 x = ri->ri_xorigin + col * wi; 761 y = ri->ri_yorigin + row * he; 762 if (c == 0x20) { 763 voodoofb_rectfill(sc, x, y, wi, he, bg); 764 } else { 765 uc = c - font->firstchar; 766 data = (uint8_t *)font->data + uc * 767 ri->ri_fontscale; 768 voodoofb_setup_mono(sc, x, y, wi, he, fg, bg); 769 for (i = 0; i < he; i++) { 770 voodoofb_feed_line(sc, font->stride, data); 771 data += font->stride; 772 } 773 } 774 } 775 } 776 777 static void 778 voodoofb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 779 { 780 struct rasops_info *ri = cookie; 781 struct wsdisplay_font *font = PICK_FONT(ri, c); 782 struct vcons_screen *scr = ri->ri_hw; 783 struct voodoofb_softc *sc = scr->scr_cookie; 784 uint8_t *data; 785 uint32_t bg, latch = 0, bg8, fg8, pixel, save_offset = 0; 786 int i, x, y, wi, he, r, g, b, aval; 787 int r1, g1, b1, r0, g0, b0, fgo, bgo, j; 788 789 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 790 return; 791 792 if (!CHAR_IN_FONT(c, font)) 793 return; 794 795 wi = font->fontwidth; 796 he = font->fontheight; 797 798 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 799 x = ri->ri_xorigin + col * wi; 800 y = ri->ri_yorigin + row * he; 801 if (c == 0x20) { 802 voodoofb_rectfill(sc, x, y, wi, he, bg); 803 return; 804 } 805 806 /* first, see if it's in the cache */ 807 if ((attr == sc->sc_defattr) && (c < 256)) { 808 uint32_t offset = sc->sc_glyphs_defattr[c]; 809 if (offset != 0) { 810 voodoo3_make_room(sc, 8); 811 voodoo3_write32(sc, SRCBASE, offset); 812 voodoo3_write32(sc, DSTBASE, 0); 813 voodoo3_write32(sc, SRCFORMAT, sc->sc_fmt); 814 voodoo3_write32(sc, DSTFORMAT, sc->sc_linebytes | FMT_8BIT); 815 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 816 voodoo3_write32(sc, DSTXY, x | (y << 16)); 817 voodoo3_write32(sc, SRCXY, 0); 818 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT | 819 (ROP_COPY << 24) | SST_2D_GO); 820 return; 821 } else { 822 int slot = sc->sc_usedglyphs; 823 sc->sc_usedglyphs++; 824 save_offset = sc->sc_cache + (slot * ri->ri_fontscale); 825 sc->sc_glyphs_defattr[c] = save_offset; 826 } 827 } 828 data = WSFONT_GLYPH(c, font); 829 830 voodoo3_make_room(sc, 7); 831 voodoo3_write32(sc, DSTBASE, 0); 832 voodoo3_write32(sc, SRCFORMAT, FMT_8BIT | FMT_PAD_BYTE); 833 voodoo3_write32(sc, DSTFORMAT, sc->sc_linebytes | FMT_8BIT); 834 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 835 voodoo3_write32(sc, DSTXY, x | (y << 16)); 836 voodoo3_write32(sc, SRCXY, 0); 837 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 838 (ROP_COPY << 24) | SST_2D_GO); 839 840 /* 841 * we need the RGB colours here, so get offsets into rasops_cmap 842 */ 843 fgo = ((attr >> 24) & 0xf) * 3; 844 bgo = ((attr >> 16) & 0xf) * 3; 845 846 r0 = rasops_cmap[bgo]; 847 r1 = rasops_cmap[fgo]; 848 g0 = rasops_cmap[bgo + 1]; 849 g1 = rasops_cmap[fgo + 1]; 850 b0 = rasops_cmap[bgo + 2]; 851 b1 = rasops_cmap[fgo + 2]; 852 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 853 bg8 = R3G3B2(r0, g0, b0); 854 fg8 = R3G3B2(r1, g1, b1); 855 voodoo3_make_room(sc, 15); 856 j = 15; 857 for (i = 0; i < ri->ri_fontscale; i++) { 858 aval = *data; 859 if (aval == 0) { 860 pixel = bg8; 861 } else if (aval == 255) { 862 pixel = fg8; 863 } else { 864 r = aval * r1 + (255 - aval) * r0; 865 g = aval * g1 + (255 - aval) * g0; 866 b = aval * b1 + (255 - aval) * b0; 867 pixel = ((r & 0xe000) >> 8) | 868 ((g & 0xe000) >> 11) | 869 ((b & 0xc000) >> 14); 870 } 871 latch = (latch << 8) | pixel; 872 /* write in 32bit chunks */ 873 if ((i & 3) == 3) { 874 voodoo3_write32s(sc, LAUNCH_2D, latch); 875 /* 876 * not strictly necessary, old data should be shifted 877 * out 878 */ 879 latch = 0; 880 /* 881 * check for pipeline space every now and then 882 * I don't think we can feed a Voodoo3 faster than it 883 * can process simple pixel data but I have been wrong 884 * about that before 885 */ 886 j--; 887 if (j == 0) { 888 voodoo3_make_room(sc, 15); 889 j = 15; 890 } 891 } 892 data++; 893 } 894 /* if we have pixels left in latch write them out */ 895 if ((i & 3) != 0) { 896 latch = latch << ((4 - (i & 3)) << 3); 897 voodoo3_write32s(sc, LAUNCH_2D, latch); 898 } 899 if (save_offset != 0) { 900 /* save the glyph we just drew */ 901 voodoo3_make_room(sc, 8); 902 voodoo3_write32(sc, SRCBASE, 0); 903 voodoo3_write32(sc, DSTBASE, save_offset); 904 voodoo3_write32(sc, SRCFORMAT, sc->sc_linebytes | FMT_8BIT); 905 voodoo3_write32(sc, DSTFORMAT, sc->sc_fmt); 906 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 907 voodoo3_write32(sc, DSTXY, 0); 908 voodoo3_write32(sc, SRCXY, x | (y << 16)); 909 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT | 910 (ROP_COPY << 24) | SST_2D_GO); 911 } 912 } 913 914 static void 915 voodoofb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 916 { 917 struct rasops_info *ri = cookie; 918 struct vcons_screen *scr = ri->ri_hw; 919 struct voodoofb_softc *sc = scr->scr_cookie; 920 int32_t xs, xd, y, width, height; 921 922 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 923 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 924 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 925 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 926 width = ri->ri_font->fontwidth * ncols; 927 height = ri->ri_font->fontheight; 928 voodoofb_bitblt(sc, xs, y, xd, y, width, height); 929 } 930 } 931 932 static void 933 voodoofb_erasecols(void *cookie, int row, int startcol, int ncols, 934 long fillattr) 935 { 936 struct rasops_info *ri = cookie; 937 struct vcons_screen *scr = ri->ri_hw; 938 struct voodoofb_softc *sc = scr->scr_cookie; 939 int32_t x, y, width, height, fg, bg, ul; 940 941 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 942 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 943 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 944 width = ri->ri_font->fontwidth * ncols; 945 height = ri->ri_font->fontheight; 946 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 947 948 voodoofb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 949 } 950 } 951 952 static void 953 voodoofb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 954 { 955 struct rasops_info *ri = cookie; 956 struct vcons_screen *scr = ri->ri_hw; 957 struct voodoofb_softc *sc = scr->scr_cookie; 958 int32_t x, ys, yd, width, height; 959 960 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 961 x = ri->ri_xorigin; 962 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 963 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 964 width = ri->ri_emuwidth; 965 height = ri->ri_font->fontheight * nrows; 966 voodoofb_bitblt(sc, x, ys, x, yd, width, height); 967 } 968 } 969 970 static void 971 voodoofb_eraserows(void *cookie, int row, int nrows, long fillattr) 972 { 973 struct rasops_info *ri = cookie; 974 struct vcons_screen *scr = ri->ri_hw; 975 struct voodoofb_softc *sc = scr->scr_cookie; 976 int32_t x, y, width, height, fg, bg, ul; 977 978 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 979 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 980 if ((row == 0) && (nrows == ri->ri_rows)) { 981 /* clear the whole screen */ 982 voodoofb_rectfill(sc, 0, 0, ri->ri_width, 983 ri->ri_height, ri->ri_devcmap[bg]); 984 } else { 985 x = ri->ri_xorigin; 986 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 987 width = ri->ri_emuwidth; 988 height = ri->ri_font->fontheight * nrows; 989 voodoofb_rectfill(sc, x, y, width, height, 990 ri->ri_devcmap[bg]); 991 } 992 } 993 } 994 995 static void 996 voodoofb_bitblt(struct voodoofb_softc *sc, int xs, int ys, int xd, int yd, int width, int height) 997 { 998 uint32_t fmt, blitcmd; 999 1000 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1001 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1002 blitcmd = COMMAND_2D_S2S_BITBLT | (ROP_COPY << 24); 1003 1004 if (xs <= xd) { 1005 blitcmd |= BIT(14); 1006 xs += (width - 1); 1007 xd += (width - 1); 1008 } 1009 if (ys <= yd) { 1010 blitcmd |= BIT(15); 1011 ys += (height - 1); 1012 yd += (height - 1); 1013 } 1014 voodoo3_make_room(sc, 8); 1015 1016 voodoo3_write32(sc, SRCBASE, 0); 1017 voodoo3_write32(sc, DSTBASE, 0); 1018 voodoo3_write32(sc, SRCFORMAT, fmt); 1019 voodoo3_write32(sc, DSTFORMAT, fmt); 1020 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1021 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1022 voodoo3_write32(sc, SRCXY, xs | (ys << 16)); 1023 voodoo3_write32(sc, COMMAND_2D, blitcmd | SST_2D_GO); 1024 } 1025 1026 static void 1027 voodoofb_rectfill(struct voodoofb_softc *sc, int x, int y, int width, 1028 int height, int colour) 1029 { 1030 uint32_t fmt; 1031 1032 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1033 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1034 1035 voodoo3_make_room(sc, 7); 1036 voodoo3_write32(sc, DSTFORMAT, fmt); 1037 voodoo3_write32(sc, DSTBASE, 0); 1038 voodoo3_write32(sc, COLORFORE, colour); 1039 voodoo3_write32(sc, COLORBACK, colour); 1040 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | (ROP_COPY << 24)); 1041 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1042 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1043 } 1044 1045 static void 1046 voodoofb_rectinvert(struct voodoofb_softc *sc, int x, int y, int width, 1047 int height) 1048 { 1049 uint32_t fmt; 1050 1051 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1052 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1053 1054 voodoo3_make_room(sc, 8); 1055 voodoo3_write32(sc, SRCBASE, 0); 1056 voodoo3_write32(sc, DSTBASE, 0); 1057 voodoo3_write32(sc, DSTFORMAT, fmt); 1058 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | 1059 (ROP_INVERT << 24)); 1060 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1061 voodoo3_write32(sc, DSTXY, x | (y << 16)); 1062 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1063 } 1064 1065 static void 1066 voodoofb_setup_mono(struct voodoofb_softc *sc, int xd, int yd, int width, int height, uint32_t fg, 1067 uint32_t bg) 1068 { 1069 uint32_t dfmt, sfmt = sc->sc_linebytes; 1070 1071 dfmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1072 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1073 1074 voodoo3_make_room(sc, 10); 1075 voodoo3_write32(sc, SRCFORMAT, sfmt); 1076 voodoo3_write32(sc, DSTFORMAT, dfmt); 1077 voodoo3_write32(sc, DSTBASE, 0); 1078 voodoo3_write32(sc, COLORFORE, fg); 1079 voodoo3_write32(sc, COLORBACK, bg); 1080 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1081 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1082 voodoo3_write32(sc, SRCXY, 0); 1083 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 1084 (ROP_COPY << 24) | SST_2D_GO); 1085 1086 /* now feed the data into the chip */ 1087 } 1088 1089 static void 1090 voodoofb_feed_line(struct voodoofb_softc *sc, int count, uint8_t *data) 1091 { 1092 int i; 1093 uint32_t latch = 0, bork; 1094 int shift = 0; 1095 1096 voodoo3_make_room(sc, count); 1097 for (i = 0; i < count; i++) { 1098 bork = data[i]; 1099 latch |= (bork << shift); 1100 if (shift == 24) { 1101 voodoo3_write32(sc, LAUNCH_2D, latch); 1102 latch = 0; 1103 shift = 0; 1104 } else 1105 shift += 8; 1106 } 1107 if (shift != 24) 1108 voodoo3_write32(sc, LAUNCH_2D, latch); 1109 } 1110 1111 #if 0 1112 static int 1113 voodoofb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp) 1114 { 1115 1116 return 0; 1117 } 1118 #endif 1119 1120 /* 1121 * wsdisplay_accessops 1122 */ 1123 1124 static int 1125 voodoofb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 1126 struct lwp *l) 1127 { 1128 struct vcons_data *vd = v; 1129 struct voodoofb_softc *sc = vd->cookie; 1130 struct wsdisplay_fbinfo *wdf; 1131 struct vcons_screen *ms = vd->active; 1132 1133 switch (cmd) { 1134 case WSDISPLAYIO_GTYPE: 1135 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 1136 return 0; 1137 1138 case WSDISPLAYIO_GINFO: 1139 wdf = (void *)data; 1140 wdf->height = ms->scr_ri.ri_height; 1141 wdf->width = ms->scr_ri.ri_width; 1142 wdf->depth = ms->scr_ri.ri_depth; 1143 wdf->cmsize = 256; 1144 return 0; 1145 1146 case WSDISPLAYIO_GETCMAP: 1147 return voodoofb_getcmap(sc, 1148 (struct wsdisplay_cmap *)data); 1149 1150 case WSDISPLAYIO_PUTCMAP: 1151 return voodoofb_putcmap(sc, 1152 (struct wsdisplay_cmap *)data); 1153 1154 /* PCI config read/write passthrough. */ 1155 case PCI_IOC_CFGREAD: 1156 case PCI_IOC_CFGWRITE: 1157 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 1158 cmd, data, flag, l); 1159 1160 case WSDISPLAYIO_GET_BUSID: 1161 return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc, 1162 sc->sc_pcitag, data); 1163 1164 case WSDISPLAYIO_SMODE: { 1165 int new_mode = *(int*)data; 1166 if (new_mode != sc->sc_mode) { 1167 sc->sc_mode = new_mode; 1168 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 1169 voodoofb_drm_map(sc); 1170 int i; 1171 1172 /* restore the palette */ 1173 for (i = 0; i < 256; i++) { 1174 voodoofb_putpalreg(sc, 1175 i, 1176 sc->sc_cmap_red[i], 1177 sc->sc_cmap_green[i], 1178 sc->sc_cmap_blue[i]); 1179 } 1180 1181 /* zap the glyph cache */ 1182 for (i = 0; i < 256; i++) { 1183 sc->sc_glyphs_defattr[i] = 0; 1184 sc->sc_glyphs_kernattr[i] = 0; 1185 } 1186 sc->sc_usedglyphs = 0; 1187 1188 voodoofb_clearscreen(sc); 1189 vcons_redraw_screen(ms); 1190 } else { 1191 voodoofb_drm_unmap(sc); 1192 } 1193 } 1194 } 1195 return 0; 1196 /* XXX WSDISPLAYIO_GET_EDID */ 1197 1198 case WSDISPLAYIO_GET_FBINFO: { 1199 struct wsdisplayio_fbinfo *fbi = data; 1200 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 1201 } 1202 } 1203 return EPASSTHROUGH; 1204 } 1205 1206 static paddr_t 1207 voodoofb_mmap(void *v, void *vs, off_t offset, int prot) 1208 { 1209 struct vcons_data *vd = v; 1210 struct voodoofb_softc *sc = vd->cookie; 1211 paddr_t pa; 1212 1213 /* 'regular' framebuffer mmap()ing */ 1214 if (offset < sc->sc_fbsize) { 1215 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1216 BUS_SPACE_MAP_LINEAR); 1217 return pa; 1218 } 1219 1220 /* 1221 * restrict all other mappings to processes with superuser privileges 1222 * or the kernel itself 1223 */ 1224 if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM, 1225 NULL, NULL, NULL, NULL) != 0) { 1226 aprint_error_dev(sc->sc_dev, "mmap() rejected.\n"); 1227 return -1; 1228 } 1229 1230 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 1231 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1232 BUS_SPACE_MAP_LINEAR); 1233 return pa; 1234 } 1235 1236 if ((offset >= sc->sc_regs) && (offset < (sc->sc_regs + 1237 sc->sc_regsize))) { 1238 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1239 BUS_SPACE_MAP_LINEAR); 1240 return pa; 1241 } 1242 1243 #ifdef PCI_MAGIC_IO_RANGE 1244 /* allow mapping of IO space */ 1245 if ((offset >= PCI_MAGIC_IO_RANGE) &&\ 1246 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 1247 pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE, 1248 0, prot, BUS_SPACE_MAP_LINEAR); 1249 return pa; 1250 } 1251 #endif 1252 1253 #ifdef OFB_ALLOW_OTHERS 1254 if (offset >= 0x80000000) { 1255 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1256 BUS_SPACE_MAP_LINEAR); 1257 return pa; 1258 } 1259 #endif 1260 return -1; 1261 } 1262 1263 static void 1264 voodoofb_init_screen(void *cookie, struct vcons_screen *scr, 1265 int existing, long *defattr) 1266 { 1267 struct voodoofb_softc *sc = cookie; 1268 struct rasops_info *ri = &scr->scr_ri; 1269 1270 ri->ri_depth = sc->sc_bits_per_pixel; 1271 ri->ri_width = sc->sc_width; 1272 ri->ri_height = sc->sc_height; 1273 ri->ri_stride = sc->sc_linebytes; 1274 ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 1275 1276 rasops_init(ri, 0, 0); 1277 ri->ri_caps = WSSCREEN_WSCOLORS; 1278 1279 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 1280 sc->sc_width / ri->ri_font->fontwidth); 1281 1282 ri->ri_hw = scr; 1283 ri->ri_ops.copyrows = voodoofb_copyrows; 1284 ri->ri_ops.copycols = voodoofb_copycols; 1285 ri->ri_ops.eraserows = voodoofb_eraserows; 1286 ri->ri_ops.erasecols = voodoofb_erasecols; 1287 ri->ri_ops.cursor = voodoofb_cursor; 1288 if (FONT_IS_ALPHA(ri->ri_font)) { 1289 ri->ri_ops.putchar = voodoofb_putchar_aa; 1290 ri->ri_ops.allocattr(ri, WS_DEFAULT_FG, WS_DEFAULT_BG, 1291 0, &sc->sc_defattr); 1292 sc->sc_kernattr = (WS_KERNEL_FG << 24) | (WS_KERNEL_BG << 16); 1293 voodoofb_init_glyphcache(sc, ri); 1294 } else { 1295 ri->ri_ops.putchar = voodoofb_putchar; 1296 } 1297 } 1298 1299 #if 0 1300 int 1301 voodoofb_load_font(void *v, void *cookie, struct wsdisplay_font *data) 1302 { 1303 1304 return 0; 1305 } 1306 #endif 1307 1308 #ifdef VOODOOFB_ENABLE_INTR 1309 static int 1310 voodoofb_intr(void *arg) 1311 { 1312 struct voodoofb_softc *sc = arg; 1313 1314 voodoo3_write32(sc, V3_STATUS, 0); /* clear interrupts */ 1315 return 1; 1316 } 1317 #endif 1318 1319 /* video mode stuff */ 1320 1321 #define REFFREQ 14318 /* .18 */ 1322 1323 #define ABS(a) ((a < 0) ? -a : a) 1324 1325 static int 1326 voodoofb_calc_pll(int freq, int *f_out, int isBanshee) 1327 { 1328 int m, n, k, best_m, best_n, best_k, f_cur, best_error; 1329 int minm, maxm; 1330 1331 best_error = freq; 1332 best_n = best_m = best_k = 0; 1333 1334 if (isBanshee) { 1335 minm = 24; 1336 maxm = 24; 1337 } else { 1338 minm = 1; 1339 maxm = 57; 1340 /* This used to be 64, alas it seems the last 8 (funny that ?) 1341 * values cause jittering at lower resolutions. I've not done 1342 * any calculations to what the adjustment affects clock ranges, 1343 * but I can still run at 1600x1200@75Hz */ 1344 } 1345 for (n = 1; n < 256; n++) { 1346 f_cur = REFFREQ * (n + 2); 1347 if (f_cur < freq) { 1348 f_cur = f_cur / 3; 1349 if (freq - f_cur < best_error) { 1350 best_error = freq - f_cur; 1351 best_n = n; 1352 best_m = 1; 1353 best_k = 0; 1354 continue; 1355 } 1356 } 1357 for (m = minm; m < maxm; m++) { 1358 for (k = 0; k < 4; k++) { 1359 f_cur = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1360 if (ABS(f_cur - freq) < best_error) { 1361 best_error = ABS(f_cur - freq); 1362 best_n = n; 1363 best_m = m; 1364 best_k = k; 1365 } 1366 } 1367 } 1368 } 1369 n = best_n; 1370 m = best_m; 1371 k = best_k; 1372 *f_out = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1373 return ( n << 8) | (m << 2) | k; 1374 } 1375 1376 static void 1377 voodoofb_setup_monitor(struct voodoofb_softc *sc, const struct videomode *vm) 1378 { 1379 struct voodoo_regs mod; 1380 struct voodoo_regs *mode; 1381 uint32_t horizontal_display_end, horizontal_sync_start, 1382 horizontal_sync_end, horizontal_total, 1383 horizontal_blanking_start, horizontal_blanking_end; 1384 1385 uint32_t vertical_display_enable_end, vertical_sync_start, 1386 vertical_sync_end, vertical_total, vertical_blanking_start, 1387 vertical_blanking_end; 1388 1389 uint32_t wd; // CRTC offset 1390 1391 int i; 1392 1393 uint8_t misc; 1394 1395 memset(&mod, 0, sizeof(mod)); 1396 1397 mode = &mod; 1398 1399 wd = (vm->hdisplay >> 3) - 1; 1400 horizontal_display_end = (vm->hdisplay >> 3) - 1; 1401 horizontal_sync_start = (vm->hsync_start >> 3) - 1; 1402 horizontal_sync_end = (vm->hsync_end >> 3) - 1; 1403 horizontal_total = (vm->htotal >> 3) - 1; 1404 horizontal_blanking_start = horizontal_display_end; 1405 horizontal_blanking_end = horizontal_total; 1406 1407 vertical_display_enable_end = vm->vdisplay - 1; 1408 vertical_sync_start = vm->vsync_start; // - 1; 1409 vertical_sync_end = vm->vsync_end; // - 1; 1410 vertical_total = vm->vtotal - 2; 1411 vertical_blanking_start = vertical_display_enable_end; 1412 vertical_blanking_end = vertical_total; 1413 1414 #if 0 1415 misc = 0x0f | 1416 (vm->hdisplay < 400 ? 0xa0 : 1417 vm->hdisplay < 480 ? 0x60 : 1418 vm->hdisplay < 768 ? 0xe0 : 0x20); 1419 #else 1420 misc = 0x2f; 1421 if (vm->flags & VID_NHSYNC) 1422 misc |= HSYNC_NEG; 1423 if (vm->flags & VID_NVSYNC) 1424 misc |= VSYNC_NEG; 1425 #ifdef VOODOOFB_DEBUG 1426 printf("misc: %02x\n", misc); 1427 #endif 1428 #endif 1429 mode->vr_seq[0] = 3; 1430 mode->vr_seq[1] = 1; 1431 mode->vr_seq[2] = 8; 1432 mode->vr_seq[3] = 0; 1433 mode->vr_seq[4] = 6; 1434 1435 /* crtc regs start */ 1436 mode->vr_crtc[0] = horizontal_total - 4; 1437 mode->vr_crtc[1] = horizontal_display_end; 1438 mode->vr_crtc[2] = horizontal_blanking_start; 1439 mode->vr_crtc[3] = 0x80 | (horizontal_blanking_end & 0x1f); 1440 mode->vr_crtc[4] = horizontal_sync_start; 1441 1442 mode->vr_crtc[5] = ((horizontal_blanking_end & 0x20) << 2) | 1443 (horizontal_sync_end & 0x1f); 1444 mode->vr_crtc[6] = vertical_total; 1445 mode->vr_crtc[7] = ((vertical_sync_start & 0x200) >> 2) | 1446 ((vertical_display_enable_end & 0x200) >> 3) | 1447 ((vertical_total & 0x200) >> 4) | 1448 0x10 | 1449 ((vertical_blanking_start & 0x100) >> 5) | 1450 ((vertical_sync_start & 0x100) >> 6) | 1451 ((vertical_display_enable_end & 0x100) >> 7) | 1452 ((vertical_total & 0x100) >> 8); 1453 1454 mode->vr_crtc[8] = 0; 1455 mode->vr_crtc[9] = 0x40 | 1456 ((vertical_blanking_start & 0x200) >> 4); 1457 1458 mode->vr_crtc[10] = 0; 1459 mode->vr_crtc[11] = 0; 1460 mode->vr_crtc[12] = 0; 1461 mode->vr_crtc[13] = 0; 1462 mode->vr_crtc[14] = 0; 1463 mode->vr_crtc[15] = 0; 1464 1465 mode->vr_crtc[16] = vertical_sync_start; 1466 mode->vr_crtc[17] = (vertical_sync_end & 0x0f) | 0x20; 1467 mode->vr_crtc[18] = vertical_display_enable_end; 1468 mode->vr_crtc[19] = wd; // CRTC offset 1469 mode->vr_crtc[20] = 0; 1470 mode->vr_crtc[21] = vertical_blanking_start; 1471 mode->vr_crtc[22] = vertical_blanking_end + 1; 1472 mode->vr_crtc[23] = 128; 1473 mode->vr_crtc[24] = 255; 1474 1475 /* overflow registers */ 1476 mode->vr_crtc[CRTC_HDISP_EXT] = 1477 (horizontal_total&0x100) >> 8 | 1478 (horizontal_display_end & 0x100) >> 6 | 1479 (horizontal_blanking_start & 0x100) >> 4 | 1480 (horizontal_blanking_end & 0x40) >> 1 | 1481 (horizontal_sync_start & 0x100) >> 2 | 1482 (horizontal_sync_end & 0x20) << 2; 1483 1484 mode->vr_crtc[CRTC_VDISP_EXT] = 1485 (vertical_total & 0x400) >> 10 | 1486 (vertical_display_enable_end & 0x400) >> 8 | /* the manual is contradictory here */ 1487 (vertical_blanking_start & 0x400) >> 6 | 1488 (vertical_blanking_end & 0x400) >> 4; 1489 1490 /* attr regs start */ 1491 mode->vr_attr[0] = 0; 1492 mode->vr_attr[1] = 0; 1493 mode->vr_attr[2] = 0; 1494 mode->vr_attr[3] = 0; 1495 mode->vr_attr[4] = 0; 1496 mode->vr_attr[5] = 0; 1497 mode->vr_attr[6] = 0; 1498 mode->vr_attr[7] = 0; 1499 mode->vr_attr[8] = 0; 1500 mode->vr_attr[9] = 0; 1501 mode->vr_attr[10] = 0; 1502 mode->vr_attr[11] = 0; 1503 mode->vr_attr[12] = 0; 1504 mode->vr_attr[13] = 0; 1505 mode->vr_attr[14] = 0; 1506 mode->vr_attr[15] = 0; 1507 mode->vr_attr[16] = 1; 1508 mode->vr_attr[17] = 0; 1509 mode->vr_attr[18] = 15; 1510 mode->vr_attr[19] = 0; 1511 /* attr regs end */ 1512 1513 /* graph regs start */ 1514 mode->vr_graph[0] = 159; 1515 mode->vr_graph[1] = 127; 1516 mode->vr_graph[2] = 127; 1517 mode->vr_graph[3] = 131; 1518 mode->vr_graph[4] = 130; 1519 mode->vr_graph[5] = 142; 1520 mode->vr_graph[6] = 30; 1521 mode->vr_graph[7] = 245; 1522 mode->vr_graph[8] = 0; 1523 1524 vga_outb(sc, MISC_W, misc | 0x01); 1525 1526 for(i = 0; i < 5; i++) 1527 voodoo3_write_seq(sc, i, mode->vr_seq[i]); 1528 for (i = 0; i < CRTC_PCI_READBACK; i ++) 1529 voodoo3_write_crtc(sc, i, mode->vr_crtc[i]); 1530 for (i = 0; i < 0x14; i ++) 1531 voodoo3_write_attr(sc, i, mode->vr_attr[i]); 1532 for (i = 0; i < 0x09; i ++) 1533 voodoo3_write_gra(sc, i, mode->vr_graph[i]); 1534 } 1535 1536 static void 1537 voodoofb_set_videomode(struct voodoofb_softc *sc, 1538 const struct videomode *vm) 1539 { 1540 uint32_t miscinit0 = 0; 1541 int vidpll, fout; 1542 uint32_t vidproc = VIDPROCDEFAULT; 1543 uint32_t bpp = 1; /* for now */ 1544 uint32_t bytes_per_row = vm->hdisplay * bpp; 1545 1546 sc->sc_bits_per_pixel = bpp << 3; 1547 sc->sc_width = vm->hdisplay; 1548 sc->sc_height = vm->vdisplay; 1549 sc->sc_linebytes = bytes_per_row; 1550 1551 voodoofb_setup_monitor(sc, vm); 1552 1553 vidproc &= ~(0x1c0000); /* clear bits 18 to 20, bpp in vidproccfg */ 1554 /* enable bits 18 to 20 to the required bpp */ 1555 vidproc |= ((bpp - 1) << VIDCFG_PIXFMT_SHIFT); 1556 1557 vidpll = voodoofb_calc_pll(vm->dot_clock, &fout, 0); 1558 1559 #ifdef VOODOOFB_DEBUG 1560 uint32_t vp; 1561 vp = voodoo3_read32(sc, VIDPROCCFG); 1562 printf("old vidproc: %08x\n", vp); 1563 printf("pll: %08x %d\n", vidpll, fout); 1564 #endif 1565 /* bit 10 of vidproccfg, is enabled or disabled as needed */ 1566 switch (bpp) { 1567 case 1: 1568 /* 1569 * bit 10 off for palettized modes only, off means 1570 * palette is used 1571 */ 1572 vidproc &= ~(1 << 10); 1573 break; 1574 #if 0 1575 case 2: 1576 #if __POWERPC__ 1577 miscinit0 = 0xc0000000; 1578 #endif 1579 /* bypass palette for 16bit modes */ 1580 vidproc |= (1 << 10); 1581 break; 1582 case 4: 1583 #if __POWERPC__ 1584 miscinit0 = 0x40000000; 1585 #endif 1586 vidproc |= (1 << 10); /* Same for 32bit modes */ 1587 break; 1588 #endif 1589 default: 1590 printf("We support only 8 bit for now\n"); 1591 return; 1592 } 1593 1594 voodoofb_wait_idle(sc); 1595 1596 voodoo3_write32(sc, MISCINIT1, voodoo3_read32(sc, MISCINIT1) | 0x01); 1597 1598 voodoo3_make_room(sc, 4); 1599 voodoo3_write32(sc, VGAINIT0, 4928); 1600 voodoo3_write32(sc, DACMODE, 0); 1601 voodoo3_write32(sc, VIDDESKSTRIDE, bytes_per_row); 1602 voodoo3_write32(sc, PLLCTRL0, vidpll); 1603 1604 voodoo3_make_room(sc, 5); 1605 voodoo3_write32(sc, VIDSCREENSIZE, sc->sc_width | 1606 (sc->sc_height << 12)); 1607 voodoo3_write32(sc, VIDDESKSTART, 0); 1608 1609 vidproc &= ~VIDCFG_HWCURSOR_ENABLE; 1610 voodoo3_write32(sc, VIDPROCCFG, vidproc); 1611 1612 voodoo3_write32(sc, VGAINIT1, 0); 1613 voodoo3_write32(sc, MISCINIT0, miscinit0); 1614 #ifdef VOODOOFB_DEBUG 1615 printf("vidproc: %08x\n", vidproc); 1616 #endif 1617 voodoo3_make_room(sc, 8); 1618 voodoo3_write32(sc, SRCBASE, 0); 1619 voodoo3_write32(sc, DSTBASE, 0); 1620 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1621 voodoo3_write32(sc, CLIP0MIN, 0); 1622 voodoo3_write32(sc, CLIP0MAX, 0x0fff0fff); 1623 voodoo3_write32(sc, CLIP1MIN, 0); 1624 voodoo3_write32(sc, CLIP1MAX, 0x0fff0fff); 1625 voodoo3_write32(sc, SRCXY, 0); 1626 voodoofb_wait_idle(sc); 1627 printf("%s: switched to %dx%d, %d bit\n", device_xname(sc->sc_dev), 1628 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 1629 sc->sc_numglyphs = 0; /* invalidate the glyph cache */ 1630 } 1631 1632 static void 1633 voodoofb_init(struct voodoofb_softc *sc) 1634 { 1635 /* XXX */ 1636 uint32_t vgainit0 = 0; 1637 uint32_t vidcfg = 0; 1638 1639 #ifdef VOODOOFB_DEBUG 1640 printf("initializing engine..."); 1641 #endif 1642 vgainit0 = voodoo3_read32(sc, VGAINIT0); 1643 #ifdef VOODOOFB_DEBUG 1644 printf("vga: %08x", vgainit0); 1645 #endif 1646 vgainit0 |= 1647 VGAINIT0_8BIT_DAC | 1648 VGAINIT0_EXT_ENABLE | 1649 VGAINIT0_WAKEUP_3C3 | 1650 VGAINIT0_ALT_READBACK | 1651 VGAINIT0_EXTSHIFTOUT; 1652 1653 vidcfg = voodoo3_read32(sc, VIDPROCCFG); 1654 #ifdef VOODOOFB_DEBUG 1655 printf(" vidcfg: %08x\n", vidcfg); 1656 #endif 1657 vidcfg |= 1658 VIDCFG_VIDPROC_ENABLE | 1659 VIDCFG_DESK_ENABLE; 1660 vidcfg &= ~VIDCFG_HWCURSOR_ENABLE; 1661 1662 voodoo3_make_room(sc, 2); 1663 1664 voodoo3_write32(sc, VGAINIT0, vgainit0); 1665 voodoo3_write32(sc, VIDPROCCFG, vidcfg); 1666 1667 voodoo3_make_room(sc, 8); 1668 voodoo3_write32(sc, SRCBASE, 0); 1669 voodoo3_write32(sc, DSTBASE, 0); 1670 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1671 voodoo3_write32(sc, CLIP0MIN, 0); 1672 voodoo3_write32(sc, CLIP0MAX, 0x1fff1fff); 1673 voodoo3_write32(sc, CLIP1MIN, 0); 1674 voodoo3_write32(sc, CLIP1MAX, 0x1fff1fff); 1675 voodoo3_write32(sc, SRCXY, 0); 1676 1677 voodoofb_wait_idle(sc); 1678 } 1679 1680 #define MAX_HRES 1700 /* 1681 * XXX in theory we can go higher but I 1682 * couldn't get anything above 1680 x 1200 1683 * to work, so until I find out why, it's 1684 * disabled so people won't end up with a 1685 * blank screen 1686 */ 1687 #define MODE_IS_VALID(m, mclk) (((m)->dot_clock <= (mclk)) && \ 1688 ((m)->hdisplay < MAX_HRES)) 1689 static void 1690 voodoofb_setup_i2c(struct voodoofb_softc *sc) 1691 { 1692 int i; 1693 1694 /* Fill in the i2c tag */ 1695 sc->sc_i2c.ic_cookie = sc; 1696 sc->sc_i2c.ic_acquire_bus = voodoofb_i2c_acquire_bus; 1697 sc->sc_i2c.ic_release_bus = voodoofb_i2c_release_bus; 1698 sc->sc_i2c.ic_send_start = voodoofb_i2c_send_start; 1699 sc->sc_i2c.ic_send_stop = voodoofb_i2c_send_stop; 1700 sc->sc_i2c.ic_initiate_xfer = voodoofb_i2c_initiate_xfer; 1701 sc->sc_i2c.ic_read_byte = voodoofb_i2c_read_byte; 1702 sc->sc_i2c.ic_write_byte = voodoofb_i2c_write_byte; 1703 sc->sc_i2c.ic_exec = NULL; 1704 1705 sc->sc_i2creg = voodoo3_read32(sc, VIDSERPARPORT); 1706 #ifdef VOODOOFB_DEBUG 1707 printf("data: %08x\n", sc->sc_i2creg); 1708 #endif 1709 sc->sc_i2creg |= VSP_ENABLE_IIC0; 1710 sc->sc_i2creg &= ~(VSP_SDA0_OUT | VSP_SCL0_OUT); 1711 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg); 1712 1713 /* zero out the EDID buffer */ 1714 memset(sc->sc_edid_data, 0, 128); 1715 1716 /* Some monitors don't respond first time */ 1717 i = 0; 1718 while (sc->sc_edid_data[1] == 0 && i++ < 3) 1719 ddc_read_edid(&sc->sc_i2c, sc->sc_edid_data, 128); 1720 if (i < 3) { 1721 if (edid_parse(sc->sc_edid_data, &sc->sc_edid_info) != -1) { 1722 #ifdef VOODOOFB_DEBUG 1723 edid_print(&sc->sc_edid_info); 1724 #endif 1725 /* 1726 * Now pick a mode. 1727 * How do we know our max. pixel clock? 1728 * All Voodoo3 should support at least 250MHz. 1729 * All Voodoo3 I've seen so far have at least 8MB 1730 * which we're not going to exhaust either in 8bit. 1731 */ 1732 if ((sc->sc_edid_info.edid_preferred_mode != NULL)) { 1733 struct videomode *m = 1734 sc->sc_edid_info.edid_preferred_mode; 1735 if (MODE_IS_VALID(m, sc->sc_max_clock)) { 1736 sc->sc_videomode = m; 1737 } else { 1738 aprint_error_dev(sc->sc_dev, 1739 "unable to use preferred mode\n"); 1740 } 1741 } 1742 /* 1743 * if we can't use the preferred mode go look for the 1744 * best one we can support 1745 */ 1746 if (sc->sc_videomode == NULL) { 1747 int n = 0; 1748 struct videomode *m = 1749 sc->sc_edid_info.edid_modes; 1750 1751 sort_modes(sc->sc_edid_info.edid_modes, 1752 &sc->sc_edid_info.edid_preferred_mode, 1753 sc->sc_edid_info.edid_nmodes); 1754 while ((sc->sc_videomode == NULL) && 1755 (n < sc->sc_edid_info.edid_nmodes)) { 1756 if (MODE_IS_VALID(&m[n], 1757 sc->sc_max_clock)) { 1758 sc->sc_videomode = &m[n]; 1759 } 1760 n++; 1761 } 1762 } 1763 } 1764 } 1765 } 1766 1767 /* I2C bitbanging */ 1768 static void voodoofb_i2cbb_set_bits(void *cookie, uint32_t bits) 1769 { 1770 struct voodoofb_softc *sc = cookie; 1771 uint32_t out; 1772 1773 out = bits >> 2; /* bitmasks match the IN bits */ 1774 1775 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg | out); 1776 } 1777 1778 static void voodoofb_i2cbb_set_dir(void *cookie, uint32_t dir) 1779 { 1780 /* Nothing to do */ 1781 } 1782 1783 static uint32_t voodoofb_i2cbb_read(void *cookie) 1784 { 1785 struct voodoofb_softc *sc = cookie; 1786 uint32_t bits; 1787 1788 bits = voodoo3_read32(sc, VIDSERPARPORT); 1789 1790 return bits; 1791 } 1792 1793 /* higher level I2C stuff */ 1794 static int 1795 voodoofb_i2c_acquire_bus(void *cookie, int flags) 1796 { 1797 /* private bus */ 1798 return (0); 1799 } 1800 1801 static void 1802 voodoofb_i2c_release_bus(void *cookie, int flags) 1803 { 1804 /* private bus */ 1805 } 1806 1807 static int 1808 voodoofb_i2c_send_start(void *cookie, int flags) 1809 { 1810 return (i2c_bitbang_send_start(cookie, flags, &voodoofb_i2cbb_ops)); 1811 } 1812 1813 static int 1814 voodoofb_i2c_send_stop(void *cookie, int flags) 1815 { 1816 1817 return (i2c_bitbang_send_stop(cookie, flags, &voodoofb_i2cbb_ops)); 1818 } 1819 1820 static int 1821 voodoofb_i2c_initiate_xfer(void *cookie, i2c_addr_t addr, int flags) 1822 { 1823 1824 return (i2c_bitbang_initiate_xfer(cookie, addr, flags, 1825 &voodoofb_i2cbb_ops)); 1826 } 1827 1828 static int 1829 voodoofb_i2c_read_byte(void *cookie, uint8_t *valp, int flags) 1830 { 1831 return (i2c_bitbang_read_byte(cookie, valp, flags, &voodoofb_i2cbb_ops)); 1832 } 1833 1834 static int 1835 voodoofb_i2c_write_byte(void *cookie, uint8_t val, int flags) 1836 { 1837 return (i2c_bitbang_write_byte(cookie, val, flags, &voodoofb_i2cbb_ops)); 1838 } 1839 1840 /* glyph cache */ 1841 static void 1842 voodoofb_init_glyphcache(struct voodoofb_softc *sc, struct rasops_info *ri) 1843 { 1844 int bufsize, i; 1845 1846 if (sc->sc_numglyphs != 0) { 1847 /* re-initialize */ 1848 if (ri->ri_font == sc->sc_font) { 1849 /* nothing to do, keep using the same cache */ 1850 return; 1851 } 1852 } 1853 sc->sc_cache = (ri->ri_width * ri->ri_stride + 3) & 0xfffffffc; 1854 bufsize = sc->sc_memsize - sc->sc_cache; 1855 sc->sc_numglyphs = bufsize / ri->ri_fontscale; 1856 sc->sc_usedglyphs = 0; 1857 for (i = 0; i < 256; i++) { 1858 sc->sc_glyphs_kernattr[i] = 0; 1859 sc->sc_glyphs_defattr[i] = 0; 1860 } 1861 sc->sc_fmt = ri->ri_font->fontwidth | FMT_8BIT; 1862 } 1863