lunafb.c revision 1.19
1 /* $NetBSD: lunafb.c,v 1.19 2009/03/14 21:04:10 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 1.19 2009/03/14 21:04:10 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(struct device *parent, struct device *self, void *args) 179 { 180 struct omfb_softc *sc = (struct omfb_softc *)self; 181 struct wsemuldisplaydev_attach_args waa; 182 183 if (omfb_console) { 184 sc->sc_dc = &omfb_console_dc; 185 sc->nscreens = 1; 186 } 187 else { 188 sc->sc_dc = (struct om_hwdevconfig *) 189 malloc(sizeof(struct om_hwdevconfig), M_DEVBUF, M_WAITOK); 190 omfb_getdevconfig(OMFB_FB_WADDR, sc->sc_dc); 191 } 192 printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht, 193 sc->sc_dc->dc_depth); 194 195 #if 0 /* WHITE on BLACK */ 196 cm = &sc->sc_cmap; 197 memset(cm, 255, sizeof(struct hwcmap)); 198 cm->r[0] = cm->g[0] = cm->b[0] = 0; 199 #endif 200 waa.console = omfb_console; 201 waa.scrdata = &omfb_screenlist; 202 waa.accessops = &omfb_accessops; 203 waa.accesscookie = sc; 204 205 config_found(self, &waa, wsemuldisplaydevprint); 206 } 207 208 /* EXPORT */ int 209 omfb_cnattach() 210 { 211 struct om_hwdevconfig *dc = &omfb_console_dc; 212 long defattr; 213 214 omfb_getdevconfig(OMFB_FB_WADDR, dc); 215 (*omfb_emulops.allocattr)(&dc->dc_rcons, 0, 0, 0, &defattr); 216 wsdisplay_cnattach(&omfb_stdscreen, &dc->dc_rcons, 0, 0, defattr); 217 omfb_console = 1; 218 return (0); 219 } 220 221 static int 222 omfbioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 223 { 224 struct omfb_softc *sc = v; 225 struct om_hwdevconfig *dc = sc->sc_dc; 226 227 switch (cmd) { 228 case WSDISPLAYIO_GTYPE: 229 *(u_int *)data = 0x19990927; 230 return (0); 231 232 case WSDISPLAYIO_GINFO: 233 #define wsd_fbip ((struct wsdisplay_fbinfo *)data) 234 wsd_fbip->height = dc->dc_ht; 235 wsd_fbip->width = dc->dc_wid; 236 wsd_fbip->depth = dc->dc_depth; 237 wsd_fbip->cmsize = dc->dc_cmsize; 238 #undef fbt 239 return (0); 240 241 case WSDISPLAYIO_GETCMAP: 242 return omgetcmap(sc, (struct wsdisplay_cmap *)data); 243 244 case WSDISPLAYIO_PUTCMAP: 245 return omsetcmap(sc, (struct wsdisplay_cmap *)data); 246 247 case WSDISPLAYIO_SVIDEO: 248 case WSDISPLAYIO_GVIDEO: 249 case WSDISPLAYIO_GCURPOS: 250 case WSDISPLAYIO_SCURPOS: 251 case WSDISPLAYIO_GCURMAX: 252 case WSDISPLAYIO_GCURSOR: 253 case WSDISPLAYIO_SCURSOR: 254 break; 255 } 256 return (EPASSTHROUGH); 257 } 258 259 /* 260 * Return the address that would map the given device at the given 261 * offset, allowing for the given protection, or return -1 for error. 262 */ 263 static paddr_t 264 omfbmmap(void *v, void *vs, off_t offset, int prot) 265 { 266 struct omfb_softc *sc = v; 267 268 if (offset >= OMFB_SIZE || offset < 0) 269 return (-1); 270 return m68k_btop(m68k_trunc_page(sc->sc_dc->dc_videobase) + offset); 271 } 272 273 static int 274 omgetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 275 { 276 u_int index = p->index, count = p->count; 277 int cmsize, error; 278 279 cmsize = sc->sc_dc->dc_cmsize; 280 if (index >= cmsize || count > cmsize - index) 281 return (EINVAL); 282 283 error = copyout(&sc->sc_cmap.r[index], p->red, count); 284 if (error) 285 return error; 286 error = copyout(&sc->sc_cmap.g[index], p->green, count); 287 if (error) 288 return error; 289 error = copyout(&sc->sc_cmap.b[index], p->blue, count); 290 return error; 291 } 292 293 static int 294 omsetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 295 { 296 struct hwcmap cmap; 297 u_int index = p->index, count = p->count; 298 int cmsize, i, error; 299 300 cmsize = sc->sc_dc->dc_cmsize; 301 if (index >= cmsize || (index + count) > cmsize) 302 return (EINVAL); 303 304 error = copyin(p->red, &cmap.r[index], count); 305 if (error) 306 return error; 307 error = copyin(p->green, &cmap.g[index], count); 308 if (error) 309 return error; 310 error = copyin(p->blue, &cmap.b[index], count); 311 if (error) 312 return error; 313 314 memcpy(&sc->sc_cmap.r[index], &cmap.r[index], count); 315 memcpy(&sc->sc_cmap.g[index], &cmap.g[index], count); 316 memcpy(&sc->sc_cmap.b[index], &cmap.b[index], count); 317 if (hwplanemask == 0x0f) { 318 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 319 odac->bt_addr = index; 320 for (i = index; i < count; i++) { 321 odac->bt_cmap = sc->sc_cmap.r[i]; 322 odac->bt_cmap = sc->sc_cmap.g[i]; 323 odac->bt_cmap = sc->sc_cmap.b[i]; 324 } 325 } 326 else if (hwplanemask == 0xff) { 327 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 328 ndac->bt_addr = index; 329 for (i = index; i < count; i++) { 330 ndac->bt_cmap = sc->sc_cmap.r[i]; 331 ndac->bt_cmap = sc->sc_cmap.g[i]; 332 ndac->bt_cmap = sc->sc_cmap.b[i]; 333 } 334 } 335 return (0); 336 } 337 338 static void 339 omfb_getdevconfig(paddr_t paddr, struct om_hwdevconfig *dc) 340 { 341 int bpp, i; 342 struct raster *rap; 343 struct rcons *rcp; 344 union { 345 struct { short h, v; } p; 346 u_int32_t u; 347 } rfcnt; 348 349 switch (hwplanemask) { 350 case 0xff: 351 bpp = 8; /* XXX check monochrome bit in DIPSW */ 352 break; 353 default: 354 case 0x0f: 355 bpp = 4; /* XXX check monochrome bit in DIPSW */ 356 break; 357 case 1: 358 bpp = 1; 359 break; 360 } 361 dc->dc_wid = 1280; 362 dc->dc_ht = 1024; 363 dc->dc_depth = bpp; 364 dc->dc_rowbytes = 2048 / 8; 365 dc->dc_cmsize = (bpp == 1) ? 0 : 1 << bpp; 366 dc->dc_videobase = paddr; 367 368 #if 0 /* WHITE on BLACK XXX experiment resulted in WHITE on SKYBLUE... */ 369 if (hwplanemask == 0x0f) { 370 /* XXX Need Bt454 initialization */ 371 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 372 odac->bt_addr = 0; 373 odac->bt_cmap = 0; 374 odac->bt_cmap = 0; 375 odac->bt_cmap = 0; 376 for (i = 1; i < 16; i++) { 377 odac->bt_cmap = 255; 378 odac->bt_cmap = 255; 379 odac->bt_cmap = 255; 380 } 381 } 382 else if (hwplanemask == 0xff) { 383 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 384 385 ndac->bt_addr = 0x04; 386 ndac->bt_ctrl = 0xff; /* all planes will be read */ 387 ndac->bt_ctrl = 0x00; /* all planes have non-blink */ 388 ndac->bt_ctrl = 0x43; /* pallete enabled, ovly plane */ 389 ndac->bt_ctrl = 0x00; /* no test mode */ 390 ndac->bt_addr = 0; 391 ndac->bt_cmap = 0; 392 ndac->bt_cmap = 0; 393 ndac->bt_cmap = 0; 394 for (i = 1; i < 256; i++) { 395 ndac->bt_cmap = 255; 396 ndac->bt_cmap = 255; 397 ndac->bt_cmap = 255; 398 } 399 } 400 #endif 401 402 /* adjust h/v orgin on screen */ 403 rfcnt.p.h = 7; 404 rfcnt.p.v = -27; 405 *(u_int32_t *)OMFB_RFCNT = rfcnt.u; /* single write of 0x007ffe6 */ 406 407 /* clear the screen */ 408 *(u_int32_t *)OMFB_PLANEMASK = 0xff; 409 ((u_int32_t *)OMFB_ROPFUNC)[5] = ~0; /* ROP copy */ 410 for (i = 0; i < dc->dc_ht * dc->dc_rowbytes/sizeof(u_int32_t); i++) 411 *((u_int32_t *)dc->dc_videobase + i) = 0; 412 *(u_int32_t *)OMFB_PLANEMASK = 0x01; 413 414 /* initialize the raster */ 415 rap = &dc->dc_raster; 416 rap->width = dc->dc_wid; 417 rap->height = dc->dc_ht; 418 rap->depth = dc->dc_depth; 419 rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t); 420 rap->pixels = (u_int32_t *)dc->dc_videobase; 421 422 /* initialize the raster console blitter */ 423 rcp = &dc->dc_rcons; 424 rcp->rc_sp = rap; 425 rcp->rc_crow = rcp->rc_ccol = -1; 426 rcp->rc_crowp = &rcp->rc_crow; 427 rcp->rc_ccolp = &rcp->rc_ccol; 428 rcons_init(rcp, 34, 80); 429 430 omfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow; 431 omfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol; 432 } 433 434 static int 435 omfb_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, int *curxp, int *curyp, long *attrp) 436 { 437 struct omfb_softc *sc = v; 438 long defattr; 439 440 if (sc->nscreens > 0) 441 return (ENOMEM); 442 443 *cookiep = &sc->sc_dc->dc_rcons; /* one and only for now */ 444 *curxp = 0; 445 *curyp = 0; 446 (*omfb_emulops.allocattr)(&sc->sc_dc->dc_rcons, 0, 0, 0, &defattr); 447 *attrp = defattr; 448 sc->nscreens++; 449 return (0); 450 } 451 452 static void 453 omfb_free_screen(void *v, void *cookie) 454 { 455 struct omfb_softc *sc = v; 456 457 if (sc->sc_dc == &omfb_console_dc) 458 panic("omfb_free_screen: console"); 459 460 sc->nscreens--; 461 } 462 463 static int 464 omfb_show_screen(v, cookie, waitok, cb, cbarg) 465 void *v; 466 void *cookie; 467 int waitok; 468 void (*cb)(void *, int, int); 469 void *cbarg; 470 { 471 return 0; 472 } 473
Indexes created Sun Oct 19 02:09:48 GMT 2025