fb_elb.c revision 1.10
1 /* $NetBSD: fb_elb.c,v 1.10 2010/05/15 07:38:24 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Juergen Hannken-Illjes. 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> 33 __KERNEL_RCSID(0, "$NetBSD: fb_elb.c,v 1.10 2010/05/15 07:38:24 tsutsui Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/conf.h> 37 #include <sys/device.h> 38 #include <sys/ioctl.h> 39 #include <sys/malloc.h> 40 #include <sys/systm.h> 41 42 #include <dev/wscons/wsconsio.h> 43 #include <dev/wscons/wsdisplayvar.h> 44 #include <dev/rasops/rasops.h> 45 46 #include <machine/explora.h> 47 #include <machine/bus.h> 48 49 #include <evbppc/explora/dev/elbvar.h> 50 51 #define FB_NPORTS 65536 52 53 struct fb_dev { 54 void *fb_vram; 55 bus_space_tag_t fb_iot; 56 bus_space_handle_t fb_ioh; 57 struct rasops_info fb_ri; 58 }; 59 60 struct fb_elb_softc { 61 struct device sc_dev; 62 struct fb_dev *sc_fb; 63 int sc_nscreens; 64 }; 65 66 static int fb_elb_probe(struct device *, struct cfdata *, void *); 67 static void fb_elb_attach(struct device *, struct device *, void *); 68 void fb_cnattach(bus_space_tag_t, bus_addr_t, void *); 69 static void fb_init(struct fb_dev *, int); 70 static int fb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 71 static paddr_t fb_mmap(void *, void *, off_t, int); 72 static int fb_alloc_screen(void *, const struct wsscreen_descr *, void **, 73 int *, int *, long *); 74 static void fb_free_screen(void *, void *); 75 static int fb_show_screen(void *, void *, int, void (*)(void *, int, int), 76 void *); 77 78 static void fb_eraserows(void *, int, int, long); 79 static void fb_erasecols(void *, int, int, int, long); 80 static void fb_copyrows(void *, int, int, int); 81 static void fb_copycols(void *, int, int, int, int); 82 83 static void s3_init(struct fb_dev *, int *, int *); 84 static void s3_copy(struct fb_dev *, int, int, int, int, int, int, int); 85 static void s3_fill(struct fb_dev *, int, int, int, int, int, int); 86 87 static struct fb_dev console_dev; 88 89 static struct wsdisplay_accessops accessops = { 90 fb_ioctl, 91 fb_mmap, 92 fb_alloc_screen, 93 fb_free_screen, 94 fb_show_screen, 95 NULL 96 }; 97 98 static struct wsscreen_descr stdscreen = { 99 "std", 100 0, 0, 101 0, 102 0, 0, 103 0 104 }; 105 106 static const struct wsscreen_descr *scrlist[] = { 107 &stdscreen 108 }; 109 110 static struct wsscreen_list screenlist = { 111 sizeof(scrlist)/sizeof(scrlist[0]), scrlist 112 }; 113 114 CFATTACH_DECL(fb_elb, sizeof(struct fb_elb_softc), 115 fb_elb_probe, fb_elb_attach, NULL, NULL); 116 117 static int 118 fb_elb_probe(struct device *parent, struct cfdata *cf, void *aux) 119 { 120 struct elb_attach_args *oaa = aux; 121 122 if (strcmp(oaa->elb_name, cf->cf_name) != 0) 123 return 0; 124 125 return (1); 126 } 127 128 static void 129 fb_elb_attach(struct device *parent, struct device *self, void *aux) 130 { 131 struct fb_elb_softc *sc = (void *)self; 132 struct elb_attach_args *eaa = aux; 133 struct wsemuldisplaydev_attach_args waa; 134 struct rasops_info *ri; 135 bus_space_handle_t ioh; 136 int is_console; 137 138 is_console = ((void *)eaa->elb_base == console_dev.fb_vram); 139 140 if (is_console) { 141 sc->sc_fb = &console_dev; 142 } else { 143 sc->sc_fb = malloc(sizeof(struct fb_dev), M_DEVBUF, M_WAITOK); 144 memset(sc->sc_fb, 0, sizeof(struct fb_dev)); 145 } 146 147 sc->sc_fb->fb_iot = eaa->elb_bt; 148 bus_space_map(sc->sc_fb->fb_iot, eaa->elb_base, SIZE_FB, 149 BUS_SPACE_MAP_LINEAR, &ioh); 150 sc->sc_fb->fb_vram = bus_space_vaddr(sc->sc_fb->fb_iot, ioh); 151 bus_space_map(sc->sc_fb->fb_iot, eaa->elb_base2, FB_NPORTS, 152 0, &sc->sc_fb->fb_ioh); 153 154 fb_init(sc->sc_fb, !is_console); 155 156 ri = &sc->sc_fb->fb_ri; 157 158 printf(": %d x %d\n", ri->ri_rows, ri->ri_cols); 159 160 waa.console = is_console; 161 waa.scrdata = &screenlist; 162 waa.accessops = &accessops; 163 waa.accesscookie = sc; 164 165 config_found(self, &waa, wsemuldisplaydevprint); 166 } 167 168 static void 169 fb_init(struct fb_dev *fb, int full) 170 { 171 struct rasops_info *ri = &fb->fb_ri; 172 173 if (full) { 174 s3_init(fb, &ri->ri_width, &ri->ri_height); 175 ri->ri_depth = 8; 176 ri->ri_stride = ri->ri_width; 177 ri->ri_bits = fb->fb_vram; 178 ri->ri_flg = RI_CENTER; 179 if (ri == &console_dev.fb_ri) 180 ri->ri_flg |= RI_NO_AUTO; 181 182 rasops_init(ri, 500, 500); 183 } else { 184 ri->ri_origbits = fb->fb_vram; /*XXX*/ 185 rasops_reconfig(ri, 500, 500); 186 } 187 188 /* Replace the copy/erase ops. */ 189 ri->ri_hw = fb; 190 ri->ri_ops.eraserows = fb_eraserows; 191 ri->ri_ops.erasecols = fb_erasecols; 192 ri->ri_ops.copyrows = fb_copyrows; 193 ri->ri_ops.copycols = fb_copycols; 194 195 stdscreen.nrows = ri->ri_rows; 196 stdscreen.ncols = ri->ri_cols; 197 stdscreen.textops = &ri->ri_ops; 198 stdscreen.capabilities = ri->ri_caps; 199 } 200 201 static int 202 fb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 203 { 204 struct fb_elb_softc *sc = v; 205 struct rasops_info *ri = &sc->sc_fb->fb_ri; 206 struct wsdisplay_fbinfo *wdf; 207 208 switch (cmd) { 209 case WSDISPLAYIO_GTYPE: 210 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 211 return(0); 212 213 case WSDISPLAYIO_GINFO: 214 wdf = (void *)data; 215 wdf->height = ri->ri_height; 216 wdf->width = ri->ri_width; 217 wdf->depth = ri->ri_depth; 218 wdf->cmsize = 16; /*XXX*/ 219 return(0); 220 221 case WSDISPLAYIO_SVIDEO: 222 case WSDISPLAYIO_GETCMAP: 223 case WSDISPLAYIO_PUTCMAP: 224 break; 225 } 226 227 return(EPASSTHROUGH); 228 } 229 230 static paddr_t 231 fb_mmap(void *v, void *vs, off_t offset, int prot) 232 { 233 struct fb_elb_softc *sc = v; 234 235 if (offset < 0 || offset >= SIZE_FB) 236 return -1; 237 238 return bus_space_mmap(sc->sc_fb->fb_iot, BASE_FB, offset, prot, 239 BUS_SPACE_MAP_LINEAR); 240 } 241 242 static int 243 fb_alloc_screen(void *v, const struct wsscreen_descr *scrdesc, void **cookiep, 244 int *ccolp, int *crowp, long *attrp) 245 { 246 struct fb_elb_softc *sc = v; 247 struct rasops_info *ri = &sc->sc_fb->fb_ri; 248 249 if (sc->sc_nscreens > 0) 250 return ENOMEM; 251 252 *cookiep = ri; 253 *ccolp = *crowp = 0; 254 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, attrp); 255 sc->sc_nscreens++; 256 257 return(0); 258 } 259 260 static void 261 fb_free_screen(void *v, void *cookie) 262 { 263 struct fb_elb_softc *sc = v; 264 265 if (sc->sc_fb == &console_dev) 266 panic("fb_free_screen: freeing console"); 267 268 sc->sc_nscreens--; 269 } 270 271 static int 272 fb_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int), 273 void *cbarg) 274 { 275 return(0); 276 } 277 278 void 279 fb_cnattach(bus_space_tag_t iot, bus_addr_t iobase, void *vram) 280 { 281 struct rasops_info *ri = &console_dev.fb_ri; 282 long defattr; 283 284 console_dev.fb_iot = iot; 285 console_dev.fb_ioh = iobase; 286 console_dev.fb_vram = vram; 287 288 fb_init(&console_dev, 1); 289 290 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 291 292 wsdisplay_cnattach(&stdscreen, ri, 0, 0, defattr); 293 } 294 295 static void 296 fb_eraserows(void *v, int row, int nrows, long attr) 297 { 298 struct rasops_info *ri = v; 299 struct fb_dev *fb = ri->ri_hw; 300 301 row *= ri->ri_font->fontheight; 302 nrows *= ri->ri_font->fontheight; 303 304 s3_fill(fb, 0, row, ri->ri_stride, nrows, (attr >> 16)&0x0f, 0x0f); 305 } 306 307 static void 308 fb_erasecols(void *v, int row, int startcol, int ncols, long attr) 309 { 310 struct rasops_info *ri = v; 311 struct fb_dev *fb = ri->ri_hw; 312 313 row *= ri->ri_font->fontheight; 314 startcol *= ri->ri_font->fontwidth; 315 ncols *= ri->ri_font->fontwidth; 316 317 s3_fill(fb, startcol, row, ncols, ri->ri_font->fontheight, 318 (attr >> 16)&0x0f, 0x0f); 319 } 320 321 static void 322 fb_copyrows(void *v, int srcrow, int dstrow, int nrows) 323 { 324 struct rasops_info *ri = v; 325 struct fb_dev *fb = ri->ri_hw; 326 327 srcrow *= ri->ri_font->fontheight; 328 dstrow *= ri->ri_font->fontheight; 329 nrows *= ri->ri_font->fontheight; 330 331 s3_copy(fb, 0, srcrow, 0, dstrow, ri->ri_stride, nrows, 0x0f); 332 } 333 334 static void 335 fb_copycols(void *v, int row, int srccol, int dstcol, int ncols) 336 { 337 struct rasops_info *ri = v; 338 struct fb_dev *fb = ri->ri_hw; 339 340 row *= ri->ri_font->fontheight; 341 srccol *= ri->ri_font->fontwidth; 342 dstcol *= ri->ri_font->fontwidth; 343 ncols *= ri->ri_font->fontwidth; 344 345 s3_copy(fb, srccol, row, dstcol, row, 346 ncols, ri->ri_font->fontheight, 0x0f); 347 } 348 349 /* 350 * S3 support routines 351 */ 352 353 #define S3_CRTC_INDEX 0x83d4 354 #define S3_CRTC_DATA 0x83d5 355 356 #define S3_DAC_RD_INDEX 0x83c7 357 #define S3_DAC_WR_INDEX 0x83c8 358 #define S3_DAC_DATA 0x83c9 359 360 #define S3_CUR_Y 0x82e8 361 #define S3_CUR_X 0x86e8 362 #define S3_DESTY_AXSTP 0x8ae8 363 #define S3_DESTX_DIASTP 0x8ee8 364 #define S3_MAJ_AXIS_PCNT 0x96e8 365 #define S3_GP_STAT 0x9ae8 366 #define S3_CMD 0x9ae8 367 #define S3_BKGD_COLOR 0xa2e8 368 #define S3_FRGD_COLOR 0xa6e8 369 #define S3_WRT_MASK 0xaae8 370 #define S3_RD_MASK 0xaee8 371 #define S3_BKGD_MIX 0xb6e8 372 #define S3_FRGD_MIX 0xbae8 373 #define S3_MULTIFUNC_CNTL 0xbee8 374 375 #define S3_GP_STAT_FIFO_1 0x0080 376 #define S3_GP_STAT_BSY 0x0200 377 378 #define S3_CMD_BITBLT 0xc001 379 #define S3_CMD_RECT 0x4001 380 #define S3_INC_Y 0x0080 381 #define S3_INC_X 0x0020 382 #define S3_DRAW 0x0010 383 #define S3_MULTI 0x0002 384 385 #define S3_CSRC_BKGDCOL 0x0000 386 #define S3_CSRC_FRGDCOL 0x0020 387 #define S3_CSRC_DISPMEM 0x0060 388 #define S3_MIX_NEW 0x0007 389 390 #define CMAP_SIZE 256 391 392 static u_int8_t default_cmap[] = { 393 /* black */ 0, 0, 0, 394 /* blue */ 0, 0, 192, 395 /* green */ 0, 192, 0, 396 /* cyan */ 0, 192, 192, 397 /* red */ 192, 0, 0, 398 /* magenta */ 192, 0, 192, 399 /* brown */ 192, 192, 0, 400 /* lightgrey */ 212, 208, 200, 401 /* darkgrey */ 200, 192, 188, 402 /* lightblue */ 0, 0, 255, 403 /* lightgreen */ 0, 255, 0, 404 /* lightcyan */ 0, 255, 255, 405 /* lightred */ 255, 0, 0, 406 /* lightmagenta */ 255, 0, 255, 407 /* yellow */ 255, 255, 0, 408 /* white */ 255, 255, 255, 409 }; 410 411 static void 412 s3_init(struct fb_dev *fb, int *width, int *height) 413 { 414 int i, j, w, h; 415 bus_space_tag_t iot = fb->fb_iot; 416 bus_space_handle_t ioh = fb->fb_ioh; 417 418 /* Initialize colormap */ 419 420 bus_space_write_1(iot, ioh, S3_DAC_WR_INDEX, 0); 421 422 for (i = j = 0; i < CMAP_SIZE*3; i++) { 423 bus_space_write_1(iot, ioh, S3_DAC_DATA, default_cmap[j] >> 2); 424 j = (j+1) % sizeof(default_cmap)/sizeof(default_cmap[0]); 425 } 426 427 /* Retrieve frame buffer geometry */ 428 429 bus_space_write_1(iot, ioh, S3_CRTC_INDEX, 1); 430 w = bus_space_read_1(iot, ioh, S3_CRTC_DATA); 431 432 bus_space_write_1(iot, ioh, S3_CRTC_INDEX, 18); 433 h = bus_space_read_1(iot, ioh, S3_CRTC_DATA); 434 435 bus_space_write_1(iot, ioh, S3_CRTC_INDEX, 7); 436 i = bus_space_read_1(iot, ioh, S3_CRTC_DATA); 437 438 h += (i << 7) & 0x100; 439 h += (i << 3) & 0x200; 440 441 *width = (w+1) << 3; 442 *height = h+1; 443 } 444 445 static void 446 s3_copy(struct fb_dev *fb, int src_x, int src_y, int dest_x, int dest_y, 447 int width, int height, int mask) 448 { 449 bus_space_tag_t iot = fb->fb_iot; 450 bus_space_handle_t ioh = fb->fb_ioh; 451 u_int16_t cmd = S3_CMD_BITBLT | S3_DRAW; 452 453 if (src_x > dest_x) 454 cmd |= S3_INC_X; 455 else { 456 src_x += width-1; 457 dest_x += width-1; 458 } 459 460 if (src_y > dest_y) 461 cmd |= S3_INC_Y; 462 else { 463 src_y += height-1; 464 dest_y += height-1; 465 } 466 467 while (bus_space_read_2(iot, ioh, S3_GP_STAT) & S3_GP_STAT_FIFO_1) 468 ; 469 470 bus_space_write_2(iot, ioh, S3_FRGD_MIX, S3_CSRC_DISPMEM | S3_MIX_NEW); 471 bus_space_write_2(iot, ioh, S3_WRT_MASK, mask); 472 bus_space_write_2(iot, ioh, S3_CUR_X, src_x); 473 bus_space_write_2(iot, ioh, S3_CUR_Y, src_y); 474 bus_space_write_2(iot, ioh, S3_DESTX_DIASTP, dest_x); 475 bus_space_write_2(iot, ioh, S3_DESTY_AXSTP, dest_y); 476 bus_space_write_2(iot, ioh, S3_MULTIFUNC_CNTL, height-1); 477 bus_space_write_2(iot, ioh, S3_MAJ_AXIS_PCNT, width-1); 478 bus_space_write_2(iot, ioh, S3_CMD, cmd); 479 480 while (bus_space_read_2(iot, ioh, S3_GP_STAT) & S3_GP_STAT_BSY) 481 ; 482 } 483 484 static void 485 s3_fill(struct fb_dev *fb, int x, int y, int width, int height, 486 int color, int mask) 487 { 488 bus_space_tag_t iot = fb->fb_iot; 489 bus_space_handle_t ioh = fb->fb_ioh; 490 u_int16_t cmd = S3_CMD_RECT | S3_INC_X | S3_INC_Y | S3_DRAW; 491 492 while (bus_space_read_2(iot, ioh, S3_GP_STAT) & S3_GP_STAT_FIFO_1) 493 ; 494 495 bus_space_write_2(iot, ioh, S3_FRGD_MIX, S3_CSRC_FRGDCOL | S3_MIX_NEW); 496 bus_space_write_2(iot, ioh, S3_FRGD_COLOR, color); 497 bus_space_write_2(iot, ioh, S3_WRT_MASK, mask); 498 bus_space_write_2(iot, ioh, S3_CUR_X, x); 499 bus_space_write_2(iot, ioh, S3_CUR_Y, y); 500 bus_space_write_2(iot, ioh, S3_MULTIFUNC_CNTL, height-1); 501 bus_space_write_2(iot, ioh, S3_MAJ_AXIS_PCNT, width-1); 502 bus_space_write_2(iot, ioh, S3_CMD, cmd); 503 504 while (bus_space_read_2(iot, ioh, S3_GP_STAT) & S3_GP_STAT_BSY) 505 ; 506 } 507
Indexes created Thu Sep 25 02:09:54 GMT 2025