lunafb.c revision 1.18
1 /* $NetBSD: lunafb.c,v 1.18 2009/03/14 15:36:08 dsl Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Tohru Nishimura. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 33 34 __KERNEL_RCSID(0, "$NetBSD: lunafb.c,v 1.18 2009/03/14 15:36:08 dsl Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/conf.h> 39 #include <sys/device.h> 40 #include <sys/ioctl.h> 41 #include <sys/malloc.h> 42 #include <sys/mman.h> 43 #include <sys/proc.h> 44 #include <sys/tty.h> 45 #include <sys/errno.h> 46 #include <sys/buf.h> 47 48 #include <uvm/uvm_extern.h> 49 50 #include <dev/rcons/raster.h> 51 #include <dev/wscons/wsconsio.h> 52 #include <dev/wscons/wscons_raster.h> 53 #include <dev/wscons/wsdisplayvar.h> 54 55 #include <machine/cpu.h> 56 #include <machine/autoconf.h> 57 58 struct bt454 { 59 u_int8_t bt_addr; /* map address register */ 60 u_int8_t bt_cmap; /* colormap data register */ 61 }; 62 63 struct bt458 { 64 u_int8_t bt_addr; /* map address register */ 65 unsigned :24; 66 u_int8_t bt_cmap; /* colormap data register */ 67 unsigned :24; 68 u_int8_t bt_ctrl; /* control register */ 69 unsigned :24; 70 u_int8_t bt_omap; /* overlay (cursor) map register */ 71 unsigned :24; 72 }; 73 74 #define OMFB_RFCNT 0xB1000000 /* video h-origin/v-origin */ 75 #define OMFB_PLANEMASK 0xB1040000 /* planemask register */ 76 #define OMFB_FB_WADDR 0xB1080008 /* common plane */ 77 #define OMFB_FB_RADDR 0xB10C0008 /* plane #0 */ 78 #define OMFB_ROPFUNC 0xB12C0000 /* ROP function code */ 79 #define OMFB_RAMDAC 0xC1100000 /* Bt454/Bt458 RAMDAC */ 80 #define OMFB_SIZE (0xB1300000 - 0xB1080000 + PAGE_SIZE) 81 82 struct om_hwdevconfig { 83 int dc_wid; /* width of frame buffer */ 84 int dc_ht; /* height of frame buffer */ 85 int dc_depth; /* depth, bits per pixel */ 86 int dc_rowbytes; /* bytes in a FB scan line */ 87 int dc_cmsize; /* colormap size */ 88 vaddr_t dc_videobase; /* base of flat frame buffer */ 89 struct raster dc_raster; /* raster description */ 90 struct rcons dc_rcons; /* raster blitter control info */ 91 }; 92 93 struct hwcmap { 94 #define CMAP_SIZE 256 95 u_int8_t r[CMAP_SIZE]; 96 u_int8_t g[CMAP_SIZE]; 97 u_int8_t b[CMAP_SIZE]; 98 }; 99 100 struct omfb_softc { 101 struct device sc_dev; /* base device */ 102 struct om_hwdevconfig *sc_dc; /* device configuration */ 103 struct hwcmap sc_cmap; /* software copy of colormap */ 104 int nscreens; 105 }; 106 107 static int omgetcmap(struct omfb_softc *, struct wsdisplay_cmap *); 108 static int omsetcmap(struct omfb_softc *, struct wsdisplay_cmap *); 109 110 static struct om_hwdevconfig omfb_console_dc; 111 static void omfb_getdevconfig(paddr_t, struct om_hwdevconfig *); 112 113 extern struct wsdisplay_emulops omfb_emulops; 114 115 static struct wsscreen_descr omfb_stdscreen = { 116 "std", 0, 0, 117 &omfb_emulops, 118 0, 0, 119 0 120 }; 121 122 static const struct wsscreen_descr *_omfb_scrlist[] = { 123 &omfb_stdscreen, 124 }; 125 126 static const struct wsscreen_list omfb_screenlist = { 127 sizeof(_omfb_scrlist) / sizeof(struct wsscreen_descr *), _omfb_scrlist 128 }; 129 130 static int omfbioctl(void *, void *, u_long, void *, int, 131 struct lwp *); 132 static paddr_t omfbmmap(void *, void *, off_t, int); 133 static int omfb_alloc_screen(void *, const struct wsscreen_descr *, 134 void **, int *, int *, long *); 135 static void omfb_free_screen(void *, void *); 136 static int omfb_show_screen(void *, void *, int, 137 void (*) (void *, int, int), void *); 138 139 static const struct wsdisplay_accessops omfb_accessops = { 140 omfbioctl, 141 omfbmmap, 142 omfb_alloc_screen, 143 omfb_free_screen, 144 omfb_show_screen, 145 0 /* load_font */ 146 }; 147 148 static int omfbmatch(struct device *, struct cfdata *, void *); 149 static void omfbattach(struct device *, struct device *, void *); 150 151 CFATTACH_DECL(fb, sizeof(struct omfb_softc), 152 omfbmatch, omfbattach, NULL, NULL); 153 extern struct cfdriver fb_cd; 154 155 extern int hwplanemask; /* hardware planemask; retrieved at boot */ 156 157 static int omfb_console; 158 int omfb_cnattach(void); 159 160 static int 161 omfbmatch(struct device *parent, struct cfdata *cf, void *aux) 162 { 163 struct mainbus_attach_args *ma = aux; 164 165 if (strcmp(ma->ma_name, fb_cd.cd_name)) 166 return (0); 167 #if 0 /* XXX badaddr() bombs if no framebuffer is installed */ 168 if (badaddr((void *)ma->ma_addr, 4)) 169 return (0); 170 #else 171 if (hwplanemask == 0) 172 return (0); 173 #endif 174 return (1); 175 } 176 177 static void 178 omfbattach(parent, self, args) 179 struct device *parent, *self; 180 void *args; 181 { 182 struct omfb_softc *sc = (struct omfb_softc *)self; 183 struct wsemuldisplaydev_attach_args waa; 184 185 if (omfb_console) { 186 sc->sc_dc = &omfb_console_dc; 187 sc->nscreens = 1; 188 } 189 else { 190 sc->sc_dc = (struct om_hwdevconfig *) 191 malloc(sizeof(struct om_hwdevconfig), M_DEVBUF, M_WAITOK); 192 omfb_getdevconfig(OMFB_FB_WADDR, sc->sc_dc); 193 } 194 printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht, 195 sc->sc_dc->dc_depth); 196 197 #if 0 /* WHITE on BLACK */ 198 cm = &sc->sc_cmap; 199 memset(cm, 255, sizeof(struct hwcmap)); 200 cm->r[0] = cm->g[0] = cm->b[0] = 0; 201 #endif 202 waa.console = omfb_console; 203 waa.scrdata = &omfb_screenlist; 204 waa.accessops = &omfb_accessops; 205 waa.accesscookie = sc; 206 207 config_found(self, &waa, wsemuldisplaydevprint); 208 } 209 210 /* EXPORT */ int 211 omfb_cnattach() 212 { 213 struct om_hwdevconfig *dc = &omfb_console_dc; 214 long defattr; 215 216 omfb_getdevconfig(OMFB_FB_WADDR, dc); 217 (*omfb_emulops.allocattr)(&dc->dc_rcons, 0, 0, 0, &defattr); 218 wsdisplay_cnattach(&omfb_stdscreen, &dc->dc_rcons, 0, 0, defattr); 219 omfb_console = 1; 220 return (0); 221 } 222 223 static int 224 omfbioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 225 { 226 struct omfb_softc *sc = v; 227 struct om_hwdevconfig *dc = sc->sc_dc; 228 229 switch (cmd) { 230 case WSDISPLAYIO_GTYPE: 231 *(u_int *)data = 0x19990927; 232 return (0); 233 234 case WSDISPLAYIO_GINFO: 235 #define wsd_fbip ((struct wsdisplay_fbinfo *)data) 236 wsd_fbip->height = dc->dc_ht; 237 wsd_fbip->width = dc->dc_wid; 238 wsd_fbip->depth = dc->dc_depth; 239 wsd_fbip->cmsize = dc->dc_cmsize; 240 #undef fbt 241 return (0); 242 243 case WSDISPLAYIO_GETCMAP: 244 return omgetcmap(sc, (struct wsdisplay_cmap *)data); 245 246 case WSDISPLAYIO_PUTCMAP: 247 return omsetcmap(sc, (struct wsdisplay_cmap *)data); 248 249 case WSDISPLAYIO_SVIDEO: 250 case WSDISPLAYIO_GVIDEO: 251 case WSDISPLAYIO_GCURPOS: 252 case WSDISPLAYIO_SCURPOS: 253 case WSDISPLAYIO_GCURMAX: 254 case WSDISPLAYIO_GCURSOR: 255 case WSDISPLAYIO_SCURSOR: 256 break; 257 } 258 return (EPASSTHROUGH); 259 } 260 261 /* 262 * Return the address that would map the given device at the given 263 * offset, allowing for the given protection, or return -1 for error. 264 */ 265 static paddr_t 266 omfbmmap(void *v, void *vs, off_t offset, int prot) 267 { 268 struct omfb_softc *sc = v; 269 270 if (offset >= OMFB_SIZE || offset < 0) 271 return (-1); 272 return m68k_btop(m68k_trunc_page(sc->sc_dc->dc_videobase) + offset); 273 } 274 275 static int 276 omgetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 277 { 278 u_int index = p->index, count = p->count; 279 int cmsize, error; 280 281 cmsize = sc->sc_dc->dc_cmsize; 282 if (index >= cmsize || count > cmsize - index) 283 return (EINVAL); 284 285 error = copyout(&sc->sc_cmap.r[index], p->red, count); 286 if (error) 287 return error; 288 error = copyout(&sc->sc_cmap.g[index], p->green, count); 289 if (error) 290 return error; 291 error = copyout(&sc->sc_cmap.b[index], p->blue, count); 292 return error; 293 } 294 295 static int 296 omsetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 297 { 298 struct hwcmap cmap; 299 u_int index = p->index, count = p->count; 300 int cmsize, i, error; 301 302 cmsize = sc->sc_dc->dc_cmsize; 303 if (index >= cmsize || (index + count) > cmsize) 304 return (EINVAL); 305 306 error = copyin(p->red, &cmap.r[index], count); 307 if (error) 308 return error; 309 error = copyin(p->green, &cmap.g[index], count); 310 if (error) 311 return error; 312 error = copyin(p->blue, &cmap.b[index], count); 313 if (error) 314 return error; 315 316 memcpy(&sc->sc_cmap.r[index], &cmap.r[index], count); 317 memcpy(&sc->sc_cmap.g[index], &cmap.g[index], count); 318 memcpy(&sc->sc_cmap.b[index], &cmap.b[index], count); 319 if (hwplanemask == 0x0f) { 320 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 321 odac->bt_addr = index; 322 for (i = index; i < count; i++) { 323 odac->bt_cmap = sc->sc_cmap.r[i]; 324 odac->bt_cmap = sc->sc_cmap.g[i]; 325 odac->bt_cmap = sc->sc_cmap.b[i]; 326 } 327 } 328 else if (hwplanemask == 0xff) { 329 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 330 ndac->bt_addr = index; 331 for (i = index; i < count; i++) { 332 ndac->bt_cmap = sc->sc_cmap.r[i]; 333 ndac->bt_cmap = sc->sc_cmap.g[i]; 334 ndac->bt_cmap = sc->sc_cmap.b[i]; 335 } 336 } 337 return (0); 338 } 339 340 static void 341 omfb_getdevconfig(paddr_t paddr, struct om_hwdevconfig *dc) 342 { 343 int bpp, i; 344 struct raster *rap; 345 struct rcons *rcp; 346 union { 347 struct { short h, v; } p; 348 u_int32_t u; 349 } rfcnt; 350 351 switch (hwplanemask) { 352 case 0xff: 353 bpp = 8; /* XXX check monochrome bit in DIPSW */ 354 break; 355 default: 356 case 0x0f: 357 bpp = 4; /* XXX check monochrome bit in DIPSW */ 358 break; 359 case 1: 360 bpp = 1; 361 break; 362 } 363 dc->dc_wid = 1280; 364 dc->dc_ht = 1024; 365 dc->dc_depth = bpp; 366 dc->dc_rowbytes = 2048 / 8; 367 dc->dc_cmsize = (bpp == 1) ? 0 : 1 << bpp; 368 dc->dc_videobase = paddr; 369 370 #if 0 /* WHITE on BLACK XXX experiment resulted in WHITE on SKYBLUE... */ 371 if (hwplanemask == 0x0f) { 372 /* XXX Need Bt454 initialization */ 373 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 374 odac->bt_addr = 0; 375 odac->bt_cmap = 0; 376 odac->bt_cmap = 0; 377 odac->bt_cmap = 0; 378 for (i = 1; i < 16; i++) { 379 odac->bt_cmap = 255; 380 odac->bt_cmap = 255; 381 odac->bt_cmap = 255; 382 } 383 } 384 else if (hwplanemask == 0xff) { 385 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 386 387 ndac->bt_addr = 0x04; 388 ndac->bt_ctrl = 0xff; /* all planes will be read */ 389 ndac->bt_ctrl = 0x00; /* all planes have non-blink */ 390 ndac->bt_ctrl = 0x43; /* pallete enabled, ovly plane */ 391 ndac->bt_ctrl = 0x00; /* no test mode */ 392 ndac->bt_addr = 0; 393 ndac->bt_cmap = 0; 394 ndac->bt_cmap = 0; 395 ndac->bt_cmap = 0; 396 for (i = 1; i < 256; i++) { 397 ndac->bt_cmap = 255; 398 ndac->bt_cmap = 255; 399 ndac->bt_cmap = 255; 400 } 401 } 402 #endif 403 404 /* adjust h/v orgin on screen */ 405 rfcnt.p.h = 7; 406 rfcnt.p.v = -27; 407 *(u_int32_t *)OMFB_RFCNT = rfcnt.u; /* single write of 0x007ffe6 */ 408 409 /* clear the screen */ 410 *(u_int32_t *)OMFB_PLANEMASK = 0xff; 411 ((u_int32_t *)OMFB_ROPFUNC)[5] = ~0; /* ROP copy */ 412 for (i = 0; i < dc->dc_ht * dc->dc_rowbytes/sizeof(u_int32_t); i++) 413 *((u_int32_t *)dc->dc_videobase + i) = 0; 414 *(u_int32_t *)OMFB_PLANEMASK = 0x01; 415 416 /* initialize the raster */ 417 rap = &dc->dc_raster; 418 rap->width = dc->dc_wid; 419 rap->height = dc->dc_ht; 420 rap->depth = dc->dc_depth; 421 rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t); 422 rap->pixels = (u_int32_t *)dc->dc_videobase; 423 424 /* initialize the raster console blitter */ 425 rcp = &dc->dc_rcons; 426 rcp->rc_sp = rap; 427 rcp->rc_crow = rcp->rc_ccol = -1; 428 rcp->rc_crowp = &rcp->rc_crow; 429 rcp->rc_ccolp = &rcp->rc_ccol; 430 rcons_init(rcp, 34, 80); 431 432 omfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow; 433 omfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol; 434 } 435 436 static int 437 omfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) 438 void *v; 439 const struct wsscreen_descr *type; 440 void **cookiep; 441 int *curxp, *curyp; 442 long *attrp; 443 { 444 struct omfb_softc *sc = v; 445 long defattr; 446 447 if (sc->nscreens > 0) 448 return (ENOMEM); 449 450 *cookiep = &sc->sc_dc->dc_rcons; /* one and only for now */ 451 *curxp = 0; 452 *curyp = 0; 453 (*omfb_emulops.allocattr)(&sc->sc_dc->dc_rcons, 0, 0, 0, &defattr); 454 *attrp = defattr; 455 sc->nscreens++; 456 return (0); 457 } 458 459 static void 460 omfb_free_screen(void *v, void *cookie) 461 { 462 struct omfb_softc *sc = v; 463 464 if (sc->sc_dc == &omfb_console_dc) 465 panic("omfb_free_screen: console"); 466 467 sc->nscreens--; 468 } 469 470 static int 471 omfb_show_screen(v, cookie, waitok, cb, cbarg) 472 void *v; 473 void *cookie; 474 int waitok; 475 void (*cb)(void *, int, int); 476 void *cbarg; 477 { 478 return 0; 479 } 480
Indexes created Sun Oct 19 02:09:48 GMT 2025