fb.c revision 1.23
1 /* $NetBSD: fb.c,v 1.23 2007/03/04 06:00:26 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: fb.c,v 1.23 2007/03/04 06:00:26 christos Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/ioctl.h> 35 #include <sys/malloc.h> 36 #include <sys/systm.h> 37 38 #include <uvm/uvm_extern.h> 39 40 #include <machine/adrsmap.h> 41 42 #include <newsmips/dev/hbvar.h> 43 44 #include <dev/wscons/wsconsio.h> 45 #include <dev/wscons/wsdisplayvar.h> 46 #include <dev/rasops/rasops.h> 47 48 struct fb_devconfig { 49 u_char *dc_fbbase; /* VRAM base address */ 50 struct rasops_info dc_ri; 51 }; 52 53 struct fb_softc { 54 struct device sc_dev; 55 struct fb_devconfig *sc_dc; 56 int sc_nscreens; 57 }; 58 59 int fb_match(struct device *, struct cfdata *, void *); 60 void fb_attach(struct device *, struct device *, void *); 61 62 int fb_common_init(struct fb_devconfig *); 63 int fb_is_console(void); 64 65 int fb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 66 paddr_t fb_mmap(void *, void *, off_t, int); 67 int fb_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, 68 int *, long *); 69 void fb_free_screen(void *, void *); 70 int fb_show_screen(void *, void *, int, void (*)(void *, int, int), void *); 71 72 void fb_cnattach(void); 73 74 static void fb253_init(void); 75 76 CFATTACH_DECL(fb, sizeof(struct fb_softc), 77 fb_match, fb_attach, NULL, NULL); 78 79 struct fb_devconfig fb_console_dc; 80 81 struct wsdisplay_accessops fb_accessops = { 82 fb_ioctl, 83 fb_mmap, 84 fb_alloc_screen, 85 fb_free_screen, 86 fb_show_screen, 87 NULL /* load_font */ 88 }; 89 90 struct wsscreen_descr fb_stdscreen = { 91 "std", 92 0, 0, 93 0, 94 0, 0, 95 WSSCREEN_REVERSE 96 }; 97 98 const struct wsscreen_descr *fb_scrlist[] = { 99 &fb_stdscreen 100 }; 101 102 struct wsscreen_list fb_screenlist = { 103 sizeof(fb_scrlist) / sizeof(fb_scrlist[0]), fb_scrlist 104 }; 105 106 #define NWB253_VRAM ((u_char *) 0x88000000) 107 #define NWB253_CTLREG ((u_short *)0xb8ff0000) 108 #define NWB253_CRTREG ((u_short *)0xb8fe0000) 109 110 static const char *devname[8] = { "NWB-512", "NWB-518", "NWE-501" }; /* XXX ? */ 111 112 int 113 fb_match(struct device *parent, struct cfdata *match, void *aux) 114 { 115 struct hb_attach_args *ha = aux; 116 117 if (strcmp(ha->ha_name, "fb") != 0) 118 return 0; 119 120 if (hb_badaddr(NWB253_CTLREG, 2) || hb_badaddr(NWB253_CRTREG, 2)) 121 return 0; 122 if ((*(volatile u_short *)NWB253_CTLREG & 7) != 4) 123 return 0; 124 125 return 1; 126 } 127 128 void 129 fb_attach(struct device *parent, struct device *self, void *aux) 130 { 131 struct fb_softc *sc = (void *)self; 132 struct wsemuldisplaydev_attach_args waa; 133 struct fb_devconfig *dc; 134 struct rasops_info *ri; 135 int console; 136 volatile u_short *ctlreg = NWB253_CTLREG; 137 int id; 138 139 console = fb_is_console(); 140 141 if (console) { 142 dc = &fb_console_dc; 143 ri = &dc->dc_ri; 144 sc->sc_nscreens = 1; 145 } else { 146 dc = malloc(sizeof(struct fb_devconfig), M_DEVBUF, 147 M_WAITOK|M_ZERO); 148 149 dc->dc_fbbase = NWB253_VRAM; 150 fb_common_init(dc); 151 ri = &dc->dc_ri; 152 153 /* clear screen */ 154 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, 0); 155 156 fb253_init(); 157 } 158 sc->sc_dc = dc; 159 160 id = (*ctlreg >> 8) & 0xf; 161 printf(": %s, %d x %d, %dbpp\n", devname[id], 162 ri->ri_width, ri->ri_height, ri->ri_depth); 163 164 waa.console = console; 165 waa.scrdata = &fb_screenlist; 166 waa.accessops = &fb_accessops; 167 waa.accesscookie = sc; 168 169 config_found(self, &waa, wsemuldisplaydevprint); 170 } 171 172 int 173 fb_common_init(struct fb_devconfig *dc) 174 { 175 struct rasops_info *ri = &dc->dc_ri; 176 volatile u_short *ctlreg = NWB253_CTLREG; 177 int id; 178 int width, height, xoff, yoff, cols, rows; 179 180 id = (*ctlreg >> 8) & 0xf; 181 182 /* initialize rasops */ 183 switch (id) { 184 case 0: 185 width = 816; 186 height = 1024; 187 break; 188 case 1: 189 case 2: 190 default: 191 width = 1024; 192 height = 768; 193 break; 194 } 195 196 ri->ri_width = width; 197 ri->ri_height = height; 198 ri->ri_depth = 1; 199 ri->ri_stride = 2048 / 8; 200 ri->ri_bits = dc->dc_fbbase; 201 ri->ri_flg = RI_FULLCLEAR; 202 203 rasops_init(ri, 24, 80); 204 rows = (height - 2) / ri->ri_font->fontheight; 205 cols = ((width - 2) / ri->ri_font->fontwidth) & ~7; 206 xoff = ((width - cols * ri->ri_font->fontwidth) / 2 / 8) & ~3; 207 yoff = (height - rows * ri->ri_font->fontheight) / 2; 208 rasops_reconfig(ri, rows, cols); 209 210 ri->ri_xorigin = xoff; 211 ri->ri_yorigin = yoff; 212 ri->ri_bits = dc->dc_fbbase + xoff + ri->ri_stride * yoff; 213 214 fb_stdscreen.nrows = ri->ri_rows; 215 fb_stdscreen.ncols = ri->ri_cols; 216 fb_stdscreen.textops = &ri->ri_ops; 217 fb_stdscreen.capabilities = ri->ri_caps; 218 219 return 0; 220 } 221 222 int 223 fb_is_console(void) 224 { 225 volatile u_int *dipsw = (void *)DIP_SWITCH; 226 227 if (*dipsw & 7) /* XXX right? */ 228 return 1; 229 230 return 0; 231 } 232 233 int 234 fb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 235 { 236 struct fb_softc *sc = v; 237 struct fb_devconfig *dc = sc->sc_dc; 238 struct wsdisplay_fbinfo *wdf; 239 240 switch (cmd) { 241 case WSDISPLAYIO_GTYPE: 242 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 243 return 0; 244 245 case WSDISPLAYIO_GINFO: 246 wdf = (void *)data; 247 wdf->height = dc->dc_ri.ri_height; 248 wdf->width = dc->dc_ri.ri_width; 249 wdf->depth = dc->dc_ri.ri_depth; 250 wdf->cmsize = 2; 251 return 0; 252 253 case WSDISPLAYIO_SVIDEO: 254 if (*(int *)data == WSDISPLAYIO_VIDEO_OFF) { 255 volatile u_short *ctlreg = NWB253_CTLREG; 256 *ctlreg = 0; /* stop crtc */ 257 } else 258 fb253_init(); 259 return 0; 260 261 case WSDISPLAYIO_GETCMAP: 262 case WSDISPLAYIO_PUTCMAP: 263 break; 264 } 265 return EPASSTHROUGH; 266 } 267 268 paddr_t 269 fb_mmap(void *v, void *vs, off_t offset, int prot) 270 { 271 struct fb_softc *sc = v; 272 struct fb_devconfig *dc = sc->sc_dc; 273 274 if (offset >= 2048 * 2048 / 8 || offset < 0) 275 return -1; 276 277 return mips_btop((int)dc->dc_fbbase + offset); 278 } 279 280 int 281 fb_alloc_screen(void *v, const struct wsscreen_descr *scrdesc, void **cookiep, 282 int *ccolp, int *crowp, long *attrp) 283 { 284 struct fb_softc *sc = v; 285 struct rasops_info *ri = &sc->sc_dc->dc_ri; 286 long defattr; 287 288 if (sc->sc_nscreens > 0) 289 return ENOMEM; 290 291 *cookiep = ri; 292 *ccolp = *crowp = 0; 293 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 294 *attrp = defattr; 295 sc->sc_nscreens++; 296 297 return 0; 298 } 299 300 void 301 fb_free_screen(void *v, void *cookie) 302 { 303 struct fb_softc *sc = v; 304 305 if (sc->sc_dc == &fb_console_dc) 306 panic("fb_free_screen: console"); 307 308 sc->sc_nscreens--; 309 } 310 311 int 312 fb_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int), 313 void *cbarg) 314 { 315 316 return 0; 317 } 318 319 void 320 fb_cnattach(void) 321 { 322 struct fb_devconfig *dc = &fb_console_dc; 323 struct rasops_info *ri = &dc->dc_ri; 324 long defattr; 325 326 if (!fb_is_console()) 327 return; 328 329 dc->dc_fbbase = NWB253_VRAM; 330 fb_common_init(dc); 331 332 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 333 wsdisplay_cnattach(&fb_stdscreen, ri, 0, ri->ri_rows - 1, defattr); 334 } 335 336 static const uint8_t 337 nwp512_data1[] = { 338 0x00, 0x44, 339 0x01, 0x33, 340 0x02, 0x3c, 341 0x03, 0x38, 342 0x04, 0x84, 343 0x05, 0x03, 344 0x06, 0x80, 345 0x07, 0x80, 346 0x08, 0x10, 347 0x09, 0x07, 348 0x0a, 0x20, 349 0x0c, 0x00, 350 0x0d, 0x00, 351 0x1b, 0x03 352 }; 353 354 static const uint8_t 355 nwp512_data2[] = { 356 0x1e, 0x08, 357 0x20, 0x08, 358 0x21, 0x0d 359 }; 360 361 static const uint8_t 362 nwp518_data1[] = { 363 0x00, 0x52, 364 0x01, 0x40, 365 0x02, 0x4a, 366 0x03, 0x49, 367 0x04, 0x63, 368 0x05, 0x02, 369 0x06, 0x60, 370 0x07, 0x60, 371 0x08, 0x10, 372 0x09, 0x07, 373 0x0a, 0x20, 374 0x0c, 0x00, 375 0x0d, 0x00, 376 0x1b, 0x04 377 }; 378 379 static const uint8_t 380 nwp518_data2[] = { 381 0x1e, 0x08, 382 0x20, 0x00, 383 0x21, 0x00 384 }; 385 386 static const uint8_t 387 nwe501_data1[] = { 388 0x00, 0x4b, 389 0x01, 0x40, 390 0x02, 0x4a, 391 0x03, 0x43, 392 0x04, 0x64, 393 0x05, 0x02, 394 0x06, 0x60, 395 0x07, 0x60, 396 0x08, 0x10, 397 0x09, 0x07, 398 0x0a, 0x20, 399 0x0c, 0x00, 400 0x0d, 0x00, 401 0x1b, 0x04 402 }; 403 404 static const uint8_t 405 nwe501_data2[] = { 406 0x1e, 0x08, 407 0x20, 0x00, 408 0x21, 0x00 409 }; 410 411 static const uint8_t 412 *crtc_data[3][2] = { 413 { nwp512_data1, nwp512_data2 }, 414 { nwp518_data1, nwp518_data2 }, 415 { nwe501_data1, nwe501_data2 } 416 }; 417 418 static void 419 fb253_init(void) 420 { 421 volatile u_short *ctlreg = NWB253_CTLREG; 422 volatile u_short *crtreg = NWB253_CRTREG; 423 int id = (*ctlreg >> 8) & 0xf; 424 const uint8_t *p; 425 int i; 426 427 *ctlreg = 0; /* stop crtc */ 428 delay(10); 429 430 /* initialize crtc without R3{0,1,2} */ 431 p = crtc_data[id][0]; 432 for (i = 0; i < 28; i++) { 433 *crtreg++ = *p++; 434 delay(10); 435 } 436 437 *ctlreg = 0x02; /* start crtc */ 438 delay(10); 439 440 /* set crtc control reg */ 441 p = crtc_data[id][1]; 442 for (i = 0; i < 6; i++) { 443 *crtreg++ = *p++; 444 delay(10); 445 } 446 } 447 448 #if 0 449 static struct wsdisplay_font newsrom8x16; 450 static struct wsdisplay_font newsrom12x24; 451 static char fontarea16[96][32]; 452 static char fontarea24[96][96]; 453 454 void 455 initfont(struct rasops_info *ri) 456 { 457 int c, x; 458 459 for (c = 0; c < 96; c++) { 460 x = ((c & 0x1f) | ((c & 0xe0) << 2)) << 7; 461 memcpy(fontarea16 + c, (char *)0xb8e00000 + x + 96, 32); 462 memcpy(fontarea24 + c, (char *)0xb8e00000 + x, 96); 463 } 464 465 newsrom8x16.name = "rom8x16"; 466 newsrom8x16.firstchar = 32; 467 newsrom8x16.numchars = 96; 468 newsrom8x16.encoding = WSDISPLAY_FONTENC_ISO; 469 newsrom8x16.fontwidth = 8; 470 newsrom8x16.fontheight = 16; 471 newsrom8x16.stride = 2; 472 newsrom8x16.bitorder = WSDISPLAY_FONTORDER_L2R; 473 newsrom8x16.byteorder = WSDISPLAY_FONTORDER_L2R; 474 newsrom8x16.data = fontarea16; 475 476 newsrom12x24.name = "rom12x24"; 477 newsrom12x24.firstchar = 32; 478 newsrom12x24.numchars = 96; 479 newsrom12x24.encoding = WSDISPLAY_FONTENC_ISO; 480 newsrom12x24.fontwidth = 12; 481 newsrom12x24.fontheight = 24; 482 newsrom12x24.stride = 4; 483 newsrom12x24.bitorder = WSDISPLAY_FONTORDER_L2R; 484 newsrom12x24.byteorder = WSDISPLAY_FONTORDER_L2R; 485 newsrom12x24.data = fontarea24; 486 487 ri->ri_font = &newsrom8x16; 488 ri->ri_font = &newsrom12x24; 489 ri->ri_wsfcookie = -1; /* not using wsfont */ 490 } 491 #endif 492
Indexes created Thu Oct 02 14:10:14 GMT 2025