chipsfb.c revision 1.5
1 /* $NetBSD: chipsfb.c,v 1.5 2006/10/27 06:14:17 macallan Exp $ */ 2 3 /* 4 * Copyright (c) 2006 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * A console driver for Chips & Technologies 65550 graphics controllers 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: chipsfb.c,v 1.5 2006/10/27 06:14:17 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/lwp.h> 44 #include <sys/kauth.h> 45 46 #include <uvm/uvm_extern.h> 47 #include <machine/autoconf.h> 48 49 #if defined(macppc) || defined (sparc64) || defined(ofppc) 50 #define HAVE_OPENFIRMWARE 51 #endif 52 53 #ifdef HAVE_OPENFIRMWARE 54 #include <dev/ofw/openfirm.h> 55 #include <dev/ofw/ofw_pci.h> 56 #endif 57 58 #include <dev/videomode/videomode.h> 59 60 #include <dev/pci/pcivar.h> 61 #include <dev/pci/pcireg.h> 62 #include <dev/pci/pcidevs.h> 63 #include <dev/pci/pciio.h> 64 #include <dev/pci/chipsfbreg.h> 65 66 #include <dev/wscons/wsdisplayvar.h> 67 #include <dev/wscons/wsconsio.h> 68 #include <dev/wsfont/wsfont.h> 69 #include <dev/rasops/rasops.h> 70 #include <dev/wscons/wsdisplay_vconsvar.h> 71 72 #include <dev/i2c/i2cvar.h> 73 #include <dev/i2c/i2c_bitbang.h> 74 #include <dev/i2c/edidvar.h> 75 76 #include "opt_wsemul.h" 77 #include "opt_ofb.h" 78 79 /* 80 #define CHIPSFB_WAIT 81 */ 82 struct chipsfb_softc { 83 struct device sc_dev; 84 pci_chipset_tag_t sc_pc; 85 pcitag_t sc_pcitag; 86 87 bus_space_tag_t sc_memt; 88 bus_space_tag_t sc_iot; 89 bus_space_handle_t sc_memh; 90 91 bus_space_tag_t sc_fbt; 92 bus_space_tag_t sc_ioregt; 93 bus_space_handle_t sc_fbh; 94 bus_space_handle_t sc_ioregh; 95 bus_addr_t sc_fb, sc_ioreg; 96 bus_size_t sc_fbsize, sc_ioregsize; 97 98 void *sc_ih; 99 100 size_t memsize; 101 102 int bits_per_pixel; 103 int width, height, linebytes; 104 105 int sc_mode; 106 uint32_t sc_bg; 107 108 u_char sc_cmap_red[256]; 109 u_char sc_cmap_green[256]; 110 u_char sc_cmap_blue[256]; 111 int sc_dacw; 112 113 /* I2C stuff */ 114 struct i2c_controller sc_i2c; 115 uint8_t sc_edid[1024]; 116 int sc_edidbytes; /* number of bytes read from the monitor */ 117 118 struct vcons_data vd; 119 }; 120 121 static struct vcons_screen chipsfb_console_screen; 122 123 extern const u_char rasops_cmap[768]; 124 125 static int chipsfb_match(struct device *, struct cfdata *, void *); 126 static void chipsfb_attach(struct device *, struct device *, void *); 127 128 CFATTACH_DECL(chipsfb, sizeof(struct chipsfb_softc), chipsfb_match, 129 chipsfb_attach, NULL, NULL); 130 131 static int chipsfb_is_console(struct pci_attach_args *); 132 static void chipsfb_init(struct chipsfb_softc *); 133 134 static void chipsfb_cursor(void *, int, int, int); 135 static void chipsfb_copycols(void *, int, int, int, int); 136 static void chipsfb_erasecols(void *, int, int, int, long); 137 static void chipsfb_copyrows(void *, int, int, int); 138 static void chipsfb_eraserows(void *, int, int, long); 139 140 #if 0 141 static int chipsfb_allocattr(void *, int, int, int, long *); 142 static void chipsfb_scroll(void *, void *, int); 143 static int chipsfb_load_font(void *, void *, struct wsdisplay_font *); 144 #endif 145 146 static int chipsfb_putcmap(struct chipsfb_softc *, 147 struct wsdisplay_cmap *); 148 static int chipsfb_getcmap(struct chipsfb_softc *, 149 struct wsdisplay_cmap *); 150 static int chipsfb_putpalreg(struct chipsfb_softc *, uint8_t, uint8_t, 151 uint8_t, uint8_t); 152 153 static void chipsfb_bitblt(struct chipsfb_softc *, int, int, int, int, 154 int, int, uint8_t); 155 static void chipsfb_rectfill(struct chipsfb_softc *, int, int, int, int, 156 int); 157 static void chipsfb_putchar(void *, int, int, u_int, long); 158 static void chipsfb_setup_mono(struct chipsfb_softc *, int, int, int, 159 int, uint32_t, uint32_t); 160 static void chipsfb_feed(struct chipsfb_softc *, int, uint8_t *); 161 162 #ifdef chipsfb_DEBUG 163 static void chipsfb_showpal(struct chipsfb_softc *); 164 #endif 165 static void chipsfb_restore_palette(struct chipsfb_softc *); 166 167 static void chipsfb_wait_idle(struct chipsfb_softc *); 168 169 static uint32_t chipsfb_probe_vram(struct chipsfb_softc *); 170 171 struct wsscreen_descr chipsfb_defaultscreen = { 172 "default", 173 0, 0, 174 NULL, 175 8, 16, 176 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 177 }; 178 179 const struct wsscreen_descr *_chipsfb_scrlist[] = { 180 &chipsfb_defaultscreen, 181 /* XXX other formats, graphics screen? */ 182 }; 183 184 struct wsscreen_list chipsfb_screenlist = { 185 sizeof(_chipsfb_scrlist) / sizeof(struct wsscreen_descr *), _chipsfb_scrlist 186 }; 187 188 static int chipsfb_ioctl(void *, void *, u_long, caddr_t, int, 189 struct lwp *); 190 static paddr_t chipsfb_mmap(void *, void *, off_t, int); 191 static void chipsfb_clearscreen(struct chipsfb_softc *); 192 static void chipsfb_init_screen(void *, struct vcons_screen *, int, 193 long *); 194 195 196 struct wsdisplay_accessops chipsfb_accessops = { 197 chipsfb_ioctl, 198 chipsfb_mmap, 199 NULL, /* load_font */ 200 NULL, /* polls */ 201 NULL, /* scroll */ 202 }; 203 204 /* 205 * Inline functions for getting access to register aperture. 206 */ 207 static inline void 208 chipsfb_write32(struct chipsfb_softc *sc, uint32_t reg, uint32_t val) 209 { 210 bus_space_write_4(sc->sc_fbt, sc->sc_fbh, reg, val); 211 } 212 213 static inline uint32_t 214 chipsfb_read32(struct chipsfb_softc *sc, uint32_t reg) 215 { 216 return bus_space_read_4(sc->sc_fbt, sc->sc_fbh, reg); 217 } 218 219 static inline void 220 chipsfb_write_vga(struct chipsfb_softc *sc, uint32_t reg, uint8_t val) 221 { 222 bus_space_write_1(sc->sc_iot, sc->sc_ioregh, reg, val); 223 } 224 225 static inline uint8_t 226 chipsfb_read_vga(struct chipsfb_softc *sc, uint32_t reg) 227 { 228 return bus_space_read_1(sc->sc_iot, sc->sc_ioregh, reg); 229 } 230 231 static inline uint8_t 232 chipsfb_read_indexed(struct chipsfb_softc *sc, uint32_t reg, uint8_t index) 233 { 234 235 chipsfb_write_vga(sc, reg & 0xfffe, index); 236 return chipsfb_read_vga(sc, reg | 0x0001); 237 } 238 239 static inline void 240 chipsfb_write_indexed(struct chipsfb_softc *sc, uint32_t reg, uint8_t index, 241 uint8_t val) 242 { 243 244 chipsfb_write_vga(sc, reg & 0xfffe, index); 245 chipsfb_write_vga(sc, reg | 0x0001, val); 246 } 247 248 static void 249 chipsfb_wait_idle(struct chipsfb_softc *sc) 250 { 251 252 #ifdef CHIPSFB_DEBUG 253 chipsfb_write32(sc, CT_OFF_FB + (800 * 598) - 4, 0); 254 #endif 255 256 /* spin until the blitter is idle */ 257 while ((chipsfb_read32(sc, CT_BLT_CONTROL) & BLT_IS_BUSY) != 0) { 258 } 259 260 #ifdef CHIPSFB_DEBUG 261 chipsfb_write32(sc, CT_OFF_FB + (800 * 598) - 4, 0xffffffff); 262 #endif 263 } 264 265 static int 266 chipsfb_match(struct device *parent, struct cfdata *match, void *aux) 267 { 268 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 269 270 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 271 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 272 return 0; 273 if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CHIPS) && 274 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CHIPS_65550)) 275 return 100; 276 return 0; 277 } 278 279 static void 280 chipsfb_attach(struct device *parent, struct device *self, void *aux) 281 { 282 struct chipsfb_softc *sc = (void *)self; 283 struct pci_attach_args *pa = aux; 284 char devinfo[256]; 285 struct wsemuldisplaydev_attach_args aa; 286 struct rasops_info *ri; 287 pcireg_t screg; 288 ulong defattr; 289 int console, width, height, node, i, j; 290 #ifdef HAVE_OPENFIRMWARE 291 int linebytes, depth; 292 #endif 293 uint32_t bg, fg, ul; 294 295 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 296 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 297 sc->sc_pc = pa->pa_pc; 298 sc->sc_pcitag = pa->pa_tag; 299 sc->sc_dacw = -1; 300 301 screg = pci_conf_read(sc->sc_pc, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 302 screg |= PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 303 pci_conf_write(sc->sc_pc, sc->sc_pcitag,PCI_COMMAND_STATUS_REG,screg); 304 305 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 306 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 307 308 sc->sc_memt = pa->pa_memt; 309 sc->sc_iot = pa->pa_iot; 310 311 /* the framebuffer */ 312 if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM, 313 BUS_SPACE_MAP_LINEAR, 314 &sc->sc_fbt, &sc->sc_fbh, &sc->sc_fb, &sc->sc_fbsize)) { 315 printf("%s: failed to map the frame buffer.\n", 316 sc->sc_dev.dv_xname); 317 } 318 319 /* IO-mapped registers */ 320 if (bus_space_map(sc->sc_iot, 0x0, PAGE_SIZE, 0, &sc->sc_ioregh) != 0) { 321 printf("%s: failed to map IO-mapped registers.\n", 322 sc->sc_dev.dv_xname); 323 } 324 325 sc->memsize = chipsfb_probe_vram(sc); 326 chipsfb_init(sc); 327 328 /* we should read these from the chip instead of depending on OF */ 329 width = height = -1; 330 331 /* detect panel size */ 332 width = chipsfb_read_indexed(sc, CT_FP_INDEX, FP_HSIZE_LSB); 333 width |= (chipsfb_read_indexed(sc, CT_FP_INDEX, FP_HORZ_OVERFLOW_1) 334 & 0x0f) << 8; 335 width = (width + 1) * 8; 336 height = chipsfb_read_indexed(sc, CT_FP_INDEX, FP_VSIZE_LSB); 337 height |= (chipsfb_read_indexed(sc, CT_FP_INDEX, FP_VERT_OVERFLOW_1) 338 & 0x0f) << 8; 339 height++; 340 printf("Panel size: %d x %d\n", width, height); 341 342 #ifdef HAVE_OPENFIRMWARE 343 if (OF_getprop(node, "width", &width, 4) != 4) 344 OF_interpret("screen-width", 1, &width); 345 if (OF_getprop(node, "height", &height, 4) != 4) 346 OF_interpret("screen-height", 1, &height); 347 if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) 348 linebytes = width; /* XXX */ 349 if (OF_getprop(node, "depth", &depth, 4) != 4) 350 depth = 8; /* XXX */ 351 352 if (width == -1 || height == -1) 353 return; 354 355 sc->width = width; 356 sc->height = height; 357 sc->bits_per_pixel = depth; 358 sc->linebytes = linebytes; 359 printf("%s: initial resolution %dx%d, %d bit\n", sc->sc_dev.dv_xname, 360 sc->width, sc->height, sc->bits_per_pixel); 361 #endif 362 363 #ifdef notyet 364 /* XXX this should at least be configurable via kernel config */ 365 chipsfb_set_videomode(sc, &videomode_list[16]); 366 #endif 367 368 vcons_init(&sc->vd, sc, &chipsfb_defaultscreen, &chipsfb_accessops); 369 sc->vd.init_screen = chipsfb_init_screen; 370 371 console = chipsfb_is_console(pa); 372 373 ri = &chipsfb_console_screen.scr_ri; 374 if (console) { 375 vcons_init_screen(&sc->vd, &chipsfb_console_screen, 1, 376 &defattr); 377 chipsfb_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 378 379 chipsfb_defaultscreen.textops = &ri->ri_ops; 380 chipsfb_defaultscreen.capabilities = ri->ri_caps; 381 chipsfb_defaultscreen.nrows = ri->ri_rows; 382 chipsfb_defaultscreen.ncols = ri->ri_cols; 383 wsdisplay_cnattach(&chipsfb_defaultscreen, ri, 0, 0, defattr); 384 } else { 385 /* 386 * since we're not the console we can postpone the rest 387 * until someone actually allocates a screen for us 388 */ 389 #ifdef notyet 390 chipsfb_set_videomode(sc, &videomode_list[0]); 391 #endif 392 } 393 394 rasops_unpack_attr(defattr, &fg, &bg, &ul); 395 sc->sc_bg = ri->ri_devcmap[bg]; 396 chipsfb_clearscreen(sc); 397 398 printf("%s: %d MB aperture, %d MB VRAM at 0x%08x\n", 399 sc->sc_dev.dv_xname, (u_int)(sc->sc_fbsize >> 20), 400 sc->memsize >> 20, (u_int)sc->sc_fb); 401 #ifdef chipsfb_DEBUG 402 printf("fb: %08lx\n", (ulong)ri->ri_bits); 403 #endif 404 405 j = 0; 406 for (i = 0; i < 256; i++) { 407 chipsfb_putpalreg(sc, i, rasops_cmap[j], rasops_cmap[j + 1], 408 rasops_cmap[j + 2]); 409 j += 3; 410 } 411 412 aa.console = console; 413 aa.scrdata = &chipsfb_screenlist; 414 aa.accessops = &chipsfb_accessops; 415 aa.accesscookie = &sc->vd; 416 417 config_found(self, &aa, wsemuldisplaydevprint); 418 } 419 420 static int 421 chipsfb_putpalreg(struct chipsfb_softc *sc, uint8_t index, uint8_t r, 422 uint8_t g, uint8_t b) 423 { 424 425 sc->sc_cmap_red[index] = r; 426 sc->sc_cmap_green[index] = g; 427 sc->sc_cmap_blue[index] = b; 428 429 chipsfb_write_vga(sc, CT_DACMASK, 0xff); 430 chipsfb_write_vga(sc, CT_WRITEINDEX, index); 431 chipsfb_write_vga(sc, CT_DACDATA, r); 432 chipsfb_write_vga(sc, CT_DACDATA, g); 433 chipsfb_write_vga(sc, CT_DACDATA, b); 434 435 return 0; 436 } 437 438 static int 439 chipsfb_putcmap(struct chipsfb_softc *sc, struct wsdisplay_cmap *cm) 440 { 441 u_char *r, *g, *b; 442 u_int index = cm->index; 443 u_int count = cm->count; 444 int i, error; 445 u_char rbuf[256], gbuf[256], bbuf[256]; 446 447 #ifdef chipsfb_DEBUG 448 printf("putcmap: %d %d\n",index, count); 449 #endif 450 if (cm->index >= 256 || cm->count > 256 || 451 (cm->index + cm->count) > 256) 452 return EINVAL; 453 error = copyin(cm->red, &rbuf[index], count); 454 if (error) 455 return error; 456 error = copyin(cm->green, &gbuf[index], count); 457 if (error) 458 return error; 459 error = copyin(cm->blue, &bbuf[index], count); 460 if (error) 461 return error; 462 463 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 464 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 465 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 466 467 r = &sc->sc_cmap_red[index]; 468 g = &sc->sc_cmap_green[index]; 469 b = &sc->sc_cmap_blue[index]; 470 471 for (i = 0; i < count; i++) { 472 chipsfb_putpalreg(sc, index, *r, *g, *b); 473 index++; 474 r++, g++, b++; 475 } 476 return 0; 477 } 478 479 static int 480 chipsfb_getcmap(struct chipsfb_softc *sc, struct wsdisplay_cmap *cm) 481 { 482 u_int index = cm->index; 483 u_int count = cm->count; 484 int error; 485 486 if (index >= 255 || count > 256 || index + count > 256) 487 return EINVAL; 488 489 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 490 if (error) 491 return error; 492 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 493 if (error) 494 return error; 495 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 496 if (error) 497 return error; 498 499 return 0; 500 } 501 502 static int 503 chipsfb_is_console(struct pci_attach_args *pa) 504 { 505 506 #ifdef HAVE_OPENFIRMWARE 507 /* check if we're the /chosen console device */ 508 int chosen, stdout, node, us; 509 510 us = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 511 chosen = OF_finddevice("/chosen"); 512 OF_getprop(chosen, "stdout", &stdout, 4); 513 node = OF_instance_to_package(stdout); 514 return(us == node); 515 #else 516 /* XXX how do we know we're console on i386? */ 517 return 1; 518 #endif 519 } 520 521 static void 522 chipsfb_clearscreen(struct chipsfb_softc *sc) 523 { 524 chipsfb_rectfill(sc, 0, 0, sc->width, sc->height, sc->sc_bg); 525 } 526 527 /* 528 * wsdisplay_emulops 529 */ 530 531 static void 532 chipsfb_cursor(void *cookie, int on, int row, int col) 533 { 534 struct rasops_info *ri = cookie; 535 struct vcons_screen *scr = ri->ri_hw; 536 struct chipsfb_softc *sc = scr->scr_cookie; 537 int x, y, wi, he; 538 539 wi = ri->ri_font->fontwidth; 540 he = ri->ri_font->fontheight; 541 542 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 543 x = ri->ri_ccol * wi + ri->ri_xorigin; 544 y = ri->ri_crow * he + ri->ri_yorigin; 545 if (ri->ri_flg & RI_CURSOR) { 546 chipsfb_bitblt(sc, x, y, x, y, wi, he, ROP_NOT_DST); 547 ri->ri_flg &= ~RI_CURSOR; 548 } 549 ri->ri_crow = row; 550 ri->ri_ccol = col; 551 if (on) { 552 x = ri->ri_ccol * wi + ri->ri_xorigin; 553 y = ri->ri_crow * he + ri->ri_yorigin; 554 chipsfb_bitblt(sc, x, y, x, y, wi, he, ROP_NOT_DST); 555 ri->ri_flg |= RI_CURSOR; 556 } 557 } else { 558 ri->ri_flg &= ~RI_CURSOR; 559 ri->ri_crow = row; 560 ri->ri_ccol = col; 561 } 562 } 563 564 #if 0 565 int 566 chipsfb_mapchar(void *cookie, int uni, u_int *index) 567 { 568 return 0; 569 } 570 #endif 571 572 static void 573 chipsfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 574 { 575 struct rasops_info *ri = cookie; 576 struct vcons_screen *scr = ri->ri_hw; 577 struct chipsfb_softc *sc = scr->scr_cookie; 578 int32_t xs, xd, y, width, height; 579 580 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 581 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 582 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 583 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 584 width = ri->ri_font->fontwidth * ncols; 585 height = ri->ri_font->fontheight; 586 chipsfb_bitblt(sc, xs, y, xd, y, width, height, ROP_COPY); 587 } 588 } 589 590 static void 591 chipsfb_erasecols(void *cookie, int row, int startcol, int ncols, 592 long fillattr) 593 { 594 struct rasops_info *ri = cookie; 595 struct vcons_screen *scr = ri->ri_hw; 596 struct chipsfb_softc *sc = scr->scr_cookie; 597 int32_t x, y, width, height, fg, bg, ul; 598 599 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 600 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 601 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 602 width = ri->ri_font->fontwidth * ncols; 603 height = ri->ri_font->fontheight; 604 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 605 606 chipsfb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 607 } 608 } 609 610 static void 611 chipsfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 612 { 613 struct rasops_info *ri = cookie; 614 struct vcons_screen *scr = ri->ri_hw; 615 struct chipsfb_softc *sc = scr->scr_cookie; 616 int32_t x, ys, yd, width, height; 617 618 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 619 x = ri->ri_xorigin; 620 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 621 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 622 width = ri->ri_emuwidth; 623 height = ri->ri_font->fontheight * nrows; 624 chipsfb_bitblt(sc, x, ys, x, yd, width, height, ROP_COPY); 625 } 626 } 627 628 static void 629 chipsfb_eraserows(void *cookie, int row, int nrows, long fillattr) 630 { 631 struct rasops_info *ri = cookie; 632 struct vcons_screen *scr = ri->ri_hw; 633 struct chipsfb_softc *sc = scr->scr_cookie; 634 int32_t x, y, width, height, fg, bg, ul; 635 636 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 637 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 638 if ((row == 0) && (nrows == ri->ri_rows)) { 639 /* clear the whole screen */ 640 chipsfb_rectfill(sc, 0, 0, ri->ri_width, 641 ri->ri_height, ri->ri_devcmap[bg]); 642 } else { 643 x = ri->ri_xorigin; 644 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 645 width = ri->ri_emuwidth; 646 height = ri->ri_font->fontheight * nrows; 647 chipsfb_rectfill(sc, x, y, width, height, 648 ri->ri_devcmap[bg]); 649 } 650 } 651 } 652 653 static void 654 chipsfb_bitblt(struct chipsfb_softc *sc, int xs, int ys, int xd, int yd, 655 int width, int height, uint8_t rop) 656 { 657 uint32_t src, dst, cmd = rop, stride, size; 658 659 cmd |= BLT_PAT_IS_SOLID; 660 661 /* we assume 8 bit for now */ 662 src = xs + ys * sc->linebytes; 663 dst = xd + yd * sc->linebytes; 664 665 if (xs < xd) { 666 /* right-to-left operation */ 667 cmd |= BLT_START_RIGHT; 668 src += width - 1; 669 dst += width - 1; 670 } 671 672 if (ys < yd) { 673 /* bottom-to-top operation */ 674 cmd |= BLT_START_BOTTOM; 675 src += (height - 1) * sc->linebytes; 676 dst += (height - 1) * sc->linebytes; 677 } 678 679 stride = (sc->linebytes << 16) | sc->linebytes; 680 size = (height << 16) | width; 681 682 chipsfb_wait_idle(sc); 683 chipsfb_write32(sc, CT_BLT_STRIDE, stride); 684 chipsfb_write32(sc, CT_BLT_SRCADDR, src); 685 chipsfb_write32(sc, CT_BLT_DSTADDR, dst); 686 chipsfb_write32(sc, CT_BLT_CONTROL, cmd); 687 chipsfb_write32(sc, CT_BLT_SIZE, size); 688 #ifdef CHIPSFB_WAIT 689 chipsfb_wait_idle(sc); 690 #endif 691 } 692 693 static void 694 chipsfb_rectfill(struct chipsfb_softc *sc, int x, int y, int width, 695 int height, int colour) 696 { 697 uint32_t dst, cmd, stride, size; 698 699 cmd = BLT_PAT_IS_SOLID | BLT_PAT_IS_MONO | ROP_PAT; 700 701 /* we assume 8 bit for now */ 702 dst = x + y * sc->linebytes; 703 704 stride = (sc->linebytes << 16) | sc->linebytes; 705 size = (height << 16) | width; 706 707 chipsfb_wait_idle(sc); 708 chipsfb_write32(sc, CT_BLT_STRIDE, stride); 709 chipsfb_write32(sc, CT_BLT_SRCADDR, dst); 710 chipsfb_write32(sc, CT_BLT_DSTADDR, dst); 711 chipsfb_write32(sc, CT_BLT_CONTROL, cmd); 712 chipsfb_write32(sc, CT_BLT_BG, colour); 713 chipsfb_write32(sc, CT_BLT_FG, colour); 714 chipsfb_write32(sc, CT_BLT_SIZE, size); 715 #ifdef CHIPSFB_WAIT 716 chipsfb_wait_idle(sc); 717 #endif 718 } 719 720 static void 721 chipsfb_putchar(void *cookie, int row, int col, u_int c, long attr) 722 { 723 struct rasops_info *ri = cookie; 724 struct vcons_screen *scr = ri->ri_hw; 725 struct chipsfb_softc *sc = scr->scr_cookie; 726 727 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 728 uint8_t *data; 729 int fg, bg, uc; 730 int x, y, wi, he; 731 732 wi = ri->ri_font->fontwidth; 733 he = ri->ri_font->fontheight; 734 735 if (!CHAR_IN_FONT(c, ri->ri_font)) 736 return; 737 bg = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 738 fg = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 739 x = ri->ri_xorigin + col * wi; 740 y = ri->ri_yorigin + row * he; 741 if (c == 0x20) { 742 chipsfb_rectfill(sc, x, y, wi, he, bg); 743 } else { 744 uc = c-ri->ri_font->firstchar; 745 data = (uint8_t *)ri->ri_font->data + uc * 746 ri->ri_fontscale; 747 chipsfb_setup_mono(sc, x, y, wi, he, fg, bg); 748 chipsfb_feed(sc, ri->ri_font->stride * he, data); 749 } 750 } 751 } 752 753 static void 754 chipsfb_setup_mono(struct chipsfb_softc *sc, int xd, int yd, int width, 755 int height, uint32_t fg, uint32_t bg) 756 { 757 uint32_t dst, cmd, stride, size; 758 759 cmd = BLT_PAT_IS_SOLID | BLT_SRC_IS_CPU | BLT_SRC_IS_MONO | ROP_COPY; 760 761 /* we assume 8 bit for now */ 762 dst = xd + yd * sc->linebytes; 763 764 stride = (sc->linebytes << 16); 765 size = (height << 16) | width; 766 767 chipsfb_wait_idle(sc); 768 chipsfb_write32(sc, CT_BLT_STRIDE, stride); 769 chipsfb_write32(sc, CT_BLT_EXPCTL, MONO_SRC_ALIGN_BYTE); 770 chipsfb_write32(sc, CT_BLT_DSTADDR, dst); 771 chipsfb_write32(sc, CT_BLT_SRCADDR, 0); 772 chipsfb_write32(sc, CT_BLT_CONTROL, cmd); 773 chipsfb_write32(sc, CT_BLT_BG, bg); 774 chipsfb_write32(sc, CT_BLT_FG, fg); 775 chipsfb_write32(sc, CT_BLT_SIZE, size); 776 } 777 778 static void 779 chipsfb_feed(struct chipsfb_softc *sc, int count, uint8_t *data) 780 { 781 int i; 782 uint32_t latch = 0, bork; 783 int shift = 0; 784 785 for (i = 0; i < count; i++) { 786 bork = data[i]; 787 latch |= (bork << shift); 788 if (shift == 24) { 789 chipsfb_write32(sc, CT_OFF_DATA, latch); 790 latch = 0; 791 shift = 0; 792 } else 793 shift += 8; 794 } 795 796 if (shift != 0) { 797 chipsfb_write32(sc, CT_OFF_DATA, latch); 798 } 799 800 /* apparently the chip wants 64bit-aligned data or it won't go idle */ 801 if ((count + 3) & 0x04) { 802 chipsfb_write32(sc, CT_OFF_DATA, 0); 803 } 804 #ifdef CHIPSFB_WAIT 805 chipsfb_wait_idle(sc); 806 #endif 807 } 808 809 #ifdef CHIPSFB_DEBUG 810 static void 811 chipsfb_showpal(struct chipsfb_softc *sc) 812 { 813 int i, x = 0; 814 815 for (i = 0; i < 16; i++) { 816 chipsfb_rectfill(sc, x, 0, 64, 64, i); 817 x += 64; 818 } 819 } 820 #endif 821 822 #if 0 823 static int 824 chipsfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp) 825 { 826 827 return 0; 828 } 829 #endif 830 831 static void 832 chipsfb_restore_palette(struct chipsfb_softc *sc) 833 { 834 int i; 835 836 for (i = 0; i < 256; i++) { 837 chipsfb_putpalreg(sc, 838 i, 839 sc->sc_cmap_red[i], 840 sc->sc_cmap_green[i], 841 sc->sc_cmap_blue[i]); 842 } 843 } 844 845 /* 846 * wsdisplay_accessops 847 */ 848 849 static int 850 chipsfb_ioctl(void *v, void *vs, u_long cmd, caddr_t data, int flag, 851 struct lwp *l) 852 { 853 struct vcons_data *vd = v; 854 struct chipsfb_softc *sc = vd->cookie; 855 struct wsdisplay_fbinfo *wdf; 856 struct vcons_screen *ms = vd->active; 857 858 switch (cmd) { 859 case WSDISPLAYIO_GTYPE: 860 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 861 return 0; 862 863 case WSDISPLAYIO_GINFO: 864 wdf = (void *)data; 865 wdf->height = ms->scr_ri.ri_height; 866 wdf->width = ms->scr_ri.ri_width; 867 wdf->depth = ms->scr_ri.ri_depth; 868 wdf->cmsize = 256; 869 return 0; 870 871 case WSDISPLAYIO_GETCMAP: 872 return chipsfb_getcmap(sc, 873 (struct wsdisplay_cmap *)data); 874 875 case WSDISPLAYIO_PUTCMAP: 876 return chipsfb_putcmap(sc, 877 (struct wsdisplay_cmap *)data); 878 879 /* PCI config read/write passthrough. */ 880 case PCI_IOC_CFGREAD: 881 case PCI_IOC_CFGWRITE: 882 return (pci_devioctl(sc->sc_pc, sc->sc_pcitag, 883 cmd, data, flag, l)); 884 885 case WSDISPLAYIO_SMODE: 886 { 887 int new_mode = *(int*)data; 888 if (new_mode != sc->sc_mode) { 889 sc->sc_mode = new_mode; 890 if(new_mode == WSDISPLAYIO_MODE_EMUL) { 891 chipsfb_restore_palette(sc); 892 vcons_redraw_screen(ms); 893 } 894 } 895 } 896 return 0; 897 } 898 return EPASSTHROUGH; 899 } 900 901 static paddr_t 902 chipsfb_mmap(void *v, void *vs, off_t offset, int prot) 903 { 904 struct vcons_data *vd = v; 905 struct chipsfb_softc *sc = vd->cookie; 906 struct lwp *me; 907 paddr_t pa; 908 909 /* 'regular' framebuffer mmap()ing */ 910 if (offset < sc->memsize) { 911 pa = bus_space_mmap(sc->sc_fbt, offset, 0, prot, 912 BUS_SPACE_MAP_LINEAR); 913 return pa; 914 } 915 916 /* 917 * restrict all other mappings to processes with superuser privileges 918 * or the kernel itself 919 */ 920 me = curlwp; 921 if (me != NULL) { 922 if (kauth_authorize_generic(me->l_cred, KAUTH_GENERIC_ISSUSER, 923 NULL) != 0) { 924 printf("%s: mmap() rejected.\n", sc->sc_dev.dv_xname); 925 return -1; 926 } 927 } 928 929 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 930 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 931 BUS_SPACE_MAP_LINEAR); 932 return pa; 933 } 934 935 #ifdef macppc 936 /* allow mapping of IO space */ 937 if ((offset >= 0xf2000000) && (offset < 0xf2800000)) { 938 pa = bus_space_mmap(sc->sc_iot, offset - 0xf2000000, 0, prot, 939 BUS_SPACE_MAP_LINEAR); 940 return pa; 941 } 942 #endif 943 944 #ifdef OFB_ALLOW_OTHERS 945 if (offset >= 0x80000000) { 946 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 947 BUS_SPACE_MAP_LINEAR); 948 return pa; 949 } 950 #endif 951 return -1; 952 } 953 954 static void 955 chipsfb_init_screen(void *cookie, struct vcons_screen *scr, 956 int existing, long *defattr) 957 { 958 struct chipsfb_softc *sc = cookie; 959 struct rasops_info *ri = &scr->scr_ri; 960 961 ri->ri_depth = sc->bits_per_pixel; 962 ri->ri_width = sc->width; 963 ri->ri_height = sc->height; 964 ri->ri_stride = sc->width; 965 ri->ri_flg = RI_CENTER | RI_FULLCLEAR; 966 967 ri->ri_bits = bus_space_vaddr(sc->sc_fbt, sc->sc_fbh); 968 969 #ifdef CHIPSFB_DEBUG 970 printf("addr: %08lx\n", (ulong)ri->ri_bits); 971 #endif 972 if (existing) { 973 ri->ri_flg |= RI_CLEAR; 974 } 975 976 rasops_init(ri, sc->height/8, sc->width/8); 977 ri->ri_caps = WSSCREEN_WSCOLORS; 978 979 rasops_reconfig(ri, sc->height / ri->ri_font->fontheight, 980 sc->width / ri->ri_font->fontwidth); 981 982 ri->ri_hw = scr; 983 ri->ri_ops.copyrows = chipsfb_copyrows; 984 ri->ri_ops.copycols = chipsfb_copycols; 985 ri->ri_ops.eraserows = chipsfb_eraserows; 986 ri->ri_ops.erasecols = chipsfb_erasecols; 987 ri->ri_ops.cursor = chipsfb_cursor; 988 ri->ri_ops.putchar = chipsfb_putchar; 989 } 990 991 #if 0 992 int 993 chipsfb_load_font(void *v, void *cookie, struct wsdisplay_font *data) 994 { 995 996 return 0; 997 } 998 #endif 999 1000 static void 1001 chipsfb_init(struct chipsfb_softc *sc) 1002 { 1003 1004 chipsfb_wait_idle(sc); 1005 1006 chipsfb_write_indexed(sc, CT_CONF_INDEX, XR_IO_CONTROL, 1007 ENABLE_CRTC_EXT | ENABLE_ATTR_EXT); 1008 chipsfb_write_indexed(sc, CT_CONF_INDEX, XR_ADDR_MAPPING, 1009 ENABLE_LINEAR); 1010 1011 /* setup the blitter */ 1012 } 1013 1014 static uint32_t 1015 chipsfb_probe_vram(struct chipsfb_softc *sc) 1016 { 1017 uint32_t ofs = 0x00080000; /* 512kB */ 1018 1019 /* 1020 * advance in 0.5MB steps, see if we can read back what we wrote and 1021 * if what we wrote to 0 is left untouched. Max. fb size is 4MB so 1022 * we voluntarily stop there. 1023 */ 1024 chipsfb_write32(sc, 0, 0xf0f0f0f0); 1025 chipsfb_write32(sc, ofs, 0x0f0f0f0f); 1026 while ((chipsfb_read32(sc, 0) == 0xf0f0f0f0) && 1027 (chipsfb_read32(sc, ofs) == 0x0f0f0f0f) && 1028 (ofs < 0x00400000)) { 1029 1030 ofs += 0x00080000; 1031 chipsfb_write32(sc, ofs, 0x0f0f0f0f); 1032 } 1033 1034 return ofs; 1035 } 1036
Indexes created Tue Sep 23 07:09:52 GMT 2025