1 /* $NetBSD: lunafb.c,v 1.49 2022/10/03 17:42:35 tsutsui 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 1.49 2022/10/03 17:42:35 tsutsui 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/kmem.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/wscons/wsconsio.h> 51 #include <dev/wscons/wsdisplayvar.h> 52 #include <dev/rasops/rasops.h> 53 54 #include <machine/cpu.h> 55 #include <machine/autoconf.h> 56 57 #include <arch/luna68k/dev/omrasopsvar.h> 58 59 #include "ioconf.h" 60 61 struct bt454 { 62 volatile uint8_t bt_addr; /* map address register */ 63 volatile uint8_t bt_cmap; /* colormap data register */ 64 }; 65 66 struct bt458 { 67 volatile uint8_t bt_addr; /* map address register */ 68 uint8_t pad0[3]; 69 volatile uint8_t bt_cmap; /* colormap data register */ 70 uint8_t pad1[3]; 71 volatile uint8_t bt_ctrl; /* control register */ 72 uint8_t pad2[3]; 73 volatile uint8_t bt_omap; /* overlay (cursor) map register */ 74 uint8_t pad3[3]; 75 }; 76 77 #define OMFB_RFCNT BMAP_RFCNT /* video h-origin/v-origin */ 78 #define OMFB_RAMDAC BMAP_PALLET2 /* Bt454/Bt458 RAMDAC */ 79 #define OMFB_FB_WADDR (BMAP_BMP + 8) /* common bitmap plane */ 80 #define OMFB_FB_RADDR (BMAP_BMAP0 + 8)/* bitmap plane #0 */ 81 82 #define OMFB_SIZE (BMAP_FN0 - BMAP_BMP + PAGE_SIZE) 83 84 struct hwcmap { 85 #define CMAP_SIZE 256 86 uint8_t r[CMAP_SIZE]; 87 uint8_t g[CMAP_SIZE]; 88 uint8_t b[CMAP_SIZE]; 89 }; 90 91 static const struct { 92 uint8_t r; 93 uint8_t g; 94 uint8_t b; 95 } ansicmap[16] = { 96 { 0, 0, 0}, 97 { 0x80, 0, 0}, 98 { 0, 0x80, 0}, 99 { 0x80, 0x80, 0}, 100 { 0, 0, 0x80}, 101 { 0x80, 0, 0x80}, 102 { 0, 0x80, 0x80}, 103 { 0xc0, 0xc0, 0xc0}, 104 { 0x80, 0x80, 0x80}, 105 { 0xff, 0, 0}, 106 { 0, 0xff, 0}, 107 { 0xff, 0xff, 0}, 108 { 0, 0, 0xff}, 109 { 0xff, 0, 0xff}, 110 { 0, 0xff, 0xff}, 111 { 0xff, 0xff, 0xff}, 112 }; 113 114 struct om_hwdevconfig { 115 int dc_wid; /* width of frame buffer */ 116 int dc_ht; /* height of frame buffer */ 117 int dc_depth; /* depth, bits per pixel */ 118 int dc_rowbytes; /* bytes in a FB scan line */ 119 int dc_cmsize; /* colormap size */ 120 struct hwcmap dc_cmap; /* software copy of colormap */ 121 vaddr_t dc_videobase; /* base of flat frame buffer */ 122 struct rasops_info dc_ri; /* raster blitter variables */ 123 }; 124 125 struct omfb_softc { 126 device_t sc_dev; /* base device */ 127 struct om_hwdevconfig *sc_dc; /* device configuration */ 128 int sc_nscreens; 129 int sc_mode; 130 }; 131 132 static int omgetcmap(struct omfb_softc *, struct wsdisplay_cmap *); 133 static int omsetcmap(struct omfb_softc *, struct wsdisplay_cmap *); 134 135 static struct om_hwdevconfig omfb_console_dc; 136 static void omfb_resetcmap(struct om_hwdevconfig *); 137 static void omfb_getdevconfig(paddr_t, struct om_hwdevconfig *); 138 139 static struct wsscreen_descr omfb_stdscreen = { 140 .name = "std" 141 }; 142 143 static const struct wsscreen_descr *_omfb_scrlist[] = { 144 &omfb_stdscreen, 145 }; 146 147 static const struct wsscreen_list omfb_screenlist = { 148 sizeof(_omfb_scrlist) / sizeof(struct wsscreen_descr *), _omfb_scrlist 149 }; 150 151 static int omfbioctl(void *, void *, u_long, void *, int, struct lwp *); 152 static paddr_t omfbmmap(void *, void *, off_t, int); 153 static int omfb_alloc_screen(void *, const struct wsscreen_descr *, 154 void **, int *, int *, long *); 155 static void omfb_free_screen(void *, void *); 156 static int omfb_show_screen(void *, void *, int, 157 void (*) (void *, int, int), void *); 158 159 static const struct wsdisplay_accessops omfb_accessops = { 160 .ioctl = omfbioctl, 161 .mmap = omfbmmap, 162 .alloc_screen = omfb_alloc_screen, 163 .free_screen = omfb_free_screen, 164 .show_screen = omfb_show_screen, 165 .load_font = NULL, 166 .pollc = NULL, 167 .scroll = NULL 168 }; 169 170 static int omfbmatch(device_t, cfdata_t, void *); 171 static void omfbattach(device_t, device_t, void *); 172 173 CFATTACH_DECL_NEW(fb, sizeof(struct omfb_softc), 174 omfbmatch, omfbattach, NULL, NULL); 175 176 extern int hwplanemask; /* hardware planemask; retrieved at boot */ 177 178 static int omfb_console; 179 int omfb_cnattach(void); 180 181 static int 182 omfbmatch(device_t parent, cfdata_t cf, void *aux) 183 { 184 struct mainbus_attach_args *ma = aux; 185 186 if (strcmp(ma->ma_name, fb_cd.cd_name)) 187 return 0; 188 #if 0 /* XXX badaddr() bombs if no framebuffer is installed */ 189 if (badaddr((void *)ma->ma_addr, 4)) 190 return 0; 191 #else 192 if (hwplanemask == 0) 193 return 0; 194 #endif 195 return 1; 196 } 197 198 static void 199 omfbattach(device_t parent, device_t self, void *args) 200 { 201 struct omfb_softc *sc = device_private(self); 202 struct wsemuldisplaydev_attach_args waa; 203 204 sc->sc_dev = self; 205 206 if (omfb_console) { 207 sc->sc_dc = &omfb_console_dc; 208 sc->sc_nscreens = 1; 209 } else { 210 sc->sc_dc = kmem_zalloc(sizeof(struct om_hwdevconfig), 211 KM_SLEEP); 212 omfb_getdevconfig(OMFB_FB_WADDR, sc->sc_dc); 213 } 214 aprint_normal(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht, 215 sc->sc_dc->dc_depth); 216 217 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 218 waa.console = omfb_console; 219 waa.scrdata = &omfb_screenlist; 220 waa.accessops = &omfb_accessops; 221 waa.accesscookie = sc; 222 223 config_found(self, &waa, wsemuldisplaydevprint, CFARGS_NONE); 224 } 225 226 /* EXPORT */ int 227 omfb_cnattach(void) 228 { 229 struct om_hwdevconfig *dc = &omfb_console_dc; 230 struct rasops_info *ri = &dc->dc_ri; 231 long defattr; 232 233 omfb_getdevconfig(OMFB_FB_WADDR, dc); 234 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 235 wsdisplay_cnattach(&omfb_stdscreen, ri, 0, 0, defattr); 236 omfb_console = 1; 237 return 0; 238 } 239 240 static int 241 omfbioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 242 { 243 struct omfb_softc *sc = v; 244 struct om_hwdevconfig *dc = sc->sc_dc; 245 int new_mode; 246 247 switch (cmd) { 248 case WSDISPLAYIO_GTYPE: 249 *(u_int *)data = WSDISPLAY_TYPE_LUNA; 250 return 0; 251 252 case WSDISPLAYIO_GINFO: 253 #define wsd_fbip ((struct wsdisplay_fbinfo *)data) 254 wsd_fbip->height = dc->dc_ht; 255 wsd_fbip->width = dc->dc_wid; 256 wsd_fbip->depth = dc->dc_depth; 257 wsd_fbip->cmsize = dc->dc_cmsize; 258 #undef wsd_fbip 259 return 0; 260 261 case WSDISPLAYIO_LINEBYTES: 262 *(u_int *)data = dc->dc_rowbytes; 263 return 0; 264 265 case WSDISPLAYIO_GETCMAP: 266 return omgetcmap(sc, (struct wsdisplay_cmap *)data); 267 268 case WSDISPLAYIO_PUTCMAP: 269 return omsetcmap(sc, (struct wsdisplay_cmap *)data); 270 271 case WSDISPLAYIO_SMODE: 272 new_mode = *(int *)data; 273 if (new_mode != sc->sc_mode) { 274 sc->sc_mode = new_mode; 275 if (new_mode == WSDISPLAYIO_MODE_EMUL) 276 omfb_resetcmap(dc); 277 } 278 return 0; 279 280 case WSDISPLAYIO_SVIDEO: 281 case WSDISPLAYIO_GVIDEO: 282 case WSDISPLAYIO_GCURPOS: 283 case WSDISPLAYIO_SCURPOS: 284 case WSDISPLAYIO_GCURMAX: 285 case WSDISPLAYIO_GCURSOR: 286 case WSDISPLAYIO_SCURSOR: 287 break; 288 } 289 return EPASSTHROUGH; 290 } 291 292 /* 293 * Return the address that would map the given device at the given 294 * offset, allowing for the given protection, or return -1 for error. 295 */ 296 static paddr_t 297 omfbmmap(void *v, void *vs, off_t offset, int prot) 298 { 299 struct omfb_softc *sc = v; 300 struct om_hwdevconfig *dc = sc->sc_dc; 301 paddr_t cookie = -1; 302 303 switch (sc->sc_mode) { 304 #if 0 305 case WSDISPLAYIO_MODE_MAPPED: 306 if (offset >= 0 && offset < OMFB_SIZE) 307 cookie = m68k_btop(m68k_trunc_page(dc->dc_videobase) + 308 offset); 309 break; 310 #endif 311 case WSDISPLAYIO_MODE_DUMBFB: 312 if (offset >= 0 && 313 offset < m68k_page_offset(OMFB_FB_RADDR) + 314 dc->dc_rowbytes * dc->dc_ht * dc->dc_depth) 315 cookie = m68k_btop(m68k_trunc_page(OMFB_FB_RADDR) + 316 offset); 317 break; 318 } 319 320 return cookie; 321 } 322 323 static int 324 omgetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 325 { 326 u_int index = p->index, count = p->count; 327 u_int cmsize; 328 int error; 329 330 cmsize = sc->sc_dc->dc_cmsize; 331 if (index >= cmsize || count > cmsize - index) 332 return EINVAL; 333 334 error = copyout(&sc->sc_dc->dc_cmap.r[index], p->red, count); 335 if (error != 0) 336 return error; 337 error = copyout(&sc->sc_dc->dc_cmap.g[index], p->green, count); 338 if (error != 0) 339 return error; 340 error = copyout(&sc->sc_dc->dc_cmap.b[index], p->blue, count); 341 if (error != 0) 342 return error; 343 344 return 0; 345 } 346 347 static int 348 omsetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 349 { 350 struct hwcmap cmap; 351 u_int index = p->index, count = p->count; 352 u_int cmsize; 353 int i, error; 354 355 cmsize = sc->sc_dc->dc_cmsize; 356 357 if (index >= cmsize || count > cmsize - index) 358 return EINVAL; 359 360 error = copyin(p->red, &cmap.r[index], count); 361 if (error != 0) 362 return error; 363 error = copyin(p->green, &cmap.g[index], count); 364 if (error != 0) 365 return error; 366 error = copyin(p->blue, &cmap.b[index], count); 367 if (error != 0) 368 return error; 369 370 memcpy(&sc->sc_dc->dc_cmap.r[index], &cmap.r[index], count); 371 memcpy(&sc->sc_dc->dc_cmap.g[index], &cmap.g[index], count); 372 memcpy(&sc->sc_dc->dc_cmap.b[index], &cmap.b[index], count); 373 if (hwplanemask == 0x0f) { 374 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 375 odac->bt_addr = index; 376 for (i = index; i < index + count; i++) { 377 odac->bt_cmap = sc->sc_dc->dc_cmap.r[i]; 378 odac->bt_cmap = sc->sc_dc->dc_cmap.g[i]; 379 odac->bt_cmap = sc->sc_dc->dc_cmap.b[i]; 380 } 381 } else if (hwplanemask == 0xff) { 382 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 383 ndac->bt_addr = index; 384 for (i = index; i < index + count; i++) { 385 ndac->bt_cmap = sc->sc_dc->dc_cmap.r[i]; 386 ndac->bt_cmap = sc->sc_dc->dc_cmap.g[i]; 387 ndac->bt_cmap = sc->sc_dc->dc_cmap.b[i]; 388 } 389 } 390 return 0; 391 } 392 393 static void 394 omfb_resetcmap(struct om_hwdevconfig *dc) 395 { 396 int i; 397 398 if (hwplanemask == 0x01) { 399 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 400 401 /* 402 * On 1bpp framebuffer, only plane P0 has framebuffer memory 403 * and other planes seems pulled up, i.e. always 1. 404 * Set white only for a palette (P0,P1,P2,P3) = (1,1,1,1). 405 */ 406 odac->bt_addr = 0; 407 for (i = 0; i < 15; i++) { 408 odac->bt_cmap = dc->dc_cmap.r[i] = 0; 409 odac->bt_cmap = dc->dc_cmap.g[i] = 0; 410 odac->bt_cmap = dc->dc_cmap.b[i] = 0; 411 } 412 /* 413 * The B/W video connector is connected to IOG of Bt454, 414 * and IOR and IOB are unused. 415 */ 416 odac->bt_cmap = dc->dc_cmap.r[15] = 0; 417 odac->bt_cmap = dc->dc_cmap.g[15] = 255; 418 odac->bt_cmap = dc->dc_cmap.b[15] = 0; 419 } else if (hwplanemask == 0x0f) { 420 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 421 422 odac->bt_addr = 0; 423 for (i = 0; i < 16; i++) { 424 odac->bt_cmap = dc->dc_cmap.r[i] = ansicmap[i].r; 425 odac->bt_cmap = dc->dc_cmap.g[i] = ansicmap[i].g; 426 odac->bt_cmap = dc->dc_cmap.b[i] = ansicmap[i].b; 427 } 428 } else if (hwplanemask == 0xff) { 429 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 430 431 /* 432 * Initialize the Bt458. When we write to control registers, 433 * the address is not incremented automatically. So we specify 434 * it ourselves for each control register. 435 */ 436 ndac->bt_addr = 0x04; 437 ndac->bt_ctrl = 0xff; /* all planes will be read */ 438 ndac->bt_addr = 0x05; 439 ndac->bt_ctrl = 0x00; /* all planes have non-blink */ 440 ndac->bt_addr = 0x06; 441 ndac->bt_ctrl = 0x40; /* palette enabled, ovly plane disabled */ 442 ndac->bt_addr = 0x07; 443 ndac->bt_ctrl = 0x00; /* no test mode */ 444 445 /* 446 * Set ANSI 16 colors. We only supports 4bpp console right 447 * now, repeat 16 colors in 256 colormap. 448 */ 449 ndac->bt_addr = 0; 450 for (i = 0; i < 256; i++) { 451 ndac->bt_cmap = dc->dc_cmap.r[i] = ansicmap[i % 16].r; 452 ndac->bt_cmap = dc->dc_cmap.g[i] = ansicmap[i % 16].g; 453 ndac->bt_cmap = dc->dc_cmap.b[i] = ansicmap[i % 16].b; 454 } 455 } 456 } 457 458 static void 459 omfb_getdevconfig(paddr_t paddr, struct om_hwdevconfig *dc) 460 { 461 int bpp, i; 462 struct rasops_info *ri; 463 union { 464 struct { short h, v; } p; 465 uint32_t u; 466 } rfcnt; 467 468 switch (hwplanemask) { 469 case 0xff: 470 bpp = 8; /* XXX check monochrome bit in DIPSW */ 471 break; 472 default: 473 case 0x0f: 474 bpp = 4; /* XXX check monochrome bit in DIPSW */ 475 break; 476 case 1: 477 bpp = 1; 478 break; 479 } 480 dc->dc_wid = 1280; 481 dc->dc_ht = 1024; 482 dc->dc_depth = bpp; 483 dc->dc_rowbytes = 2048 / 8; 484 dc->dc_cmsize = (bpp == 1) ? 0 : 1 << bpp; 485 dc->dc_videobase = paddr; 486 487 omfb_resetcmap(dc); 488 489 /* adjust h/v origin on screen */ 490 rfcnt.p.h = 7; 491 rfcnt.p.v = -27; 492 /* single write of 0x007ffe6 */ 493 *(volatile uint32_t *)OMFB_RFCNT = rfcnt.u; 494 495 /* clear the screen */ 496 *(volatile uint32_t *)OMFB_PLANEMASK = 0xff; 497 ((volatile uint32_t *)OMFB_ROPFUNC)[5] = ~0; /* ROP copy */ 498 for (i = 0; i < dc->dc_ht * dc->dc_rowbytes / sizeof(uint32_t); i++) 499 *((volatile uint32_t *)dc->dc_videobase + i) = 0; 500 *(volatile uint32_t *)OMFB_PLANEMASK = 0x01; 501 502 /* initialize the raster */ 503 ri = &dc->dc_ri; 504 ri->ri_width = dc->dc_wid; 505 ri->ri_height = dc->dc_ht; 506 ri->ri_depth = dc->dc_depth; 507 ri->ri_stride = dc->dc_rowbytes; 508 ri->ri_bits = (void *)dc->dc_videobase; 509 ri->ri_flg = RI_CENTER; 510 if (dc == &omfb_console_dc) 511 ri->ri_flg |= RI_NO_AUTO; 512 ri->ri_hw = dc; 513 514 if (bpp == 4 || bpp == 8) 515 omrasops4_init(ri, 34, 80); 516 else 517 omrasops1_init(ri, 34, 80); 518 519 omfb_stdscreen.nrows = ri->ri_rows; 520 omfb_stdscreen.ncols = ri->ri_cols; 521 omfb_stdscreen.textops = &ri->ri_ops; 522 omfb_stdscreen.capabilities = ri->ri_caps; 523 omfb_stdscreen.fontwidth = ri->ri_font->fontwidth; 524 omfb_stdscreen.fontheight = ri->ri_font->fontheight; 525 } 526 527 static int 528 omfb_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, 529 int *curxp, int *curyp, long *attrp) 530 { 531 struct omfb_softc *sc = v; 532 struct rasops_info *ri = &sc->sc_dc->dc_ri; 533 534 if (sc->sc_nscreens > 0) 535 return ENOMEM; 536 537 *cookiep = ri; 538 *curxp = 0; 539 *curyp = 0; 540 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, attrp); 541 sc->sc_nscreens++; 542 return 0; 543 } 544 545 static void 546 omfb_free_screen(void *v, void *cookie) 547 { 548 struct omfb_softc *sc = v; 549 550 if (sc->sc_dc == &omfb_console_dc) 551 panic("omfb_free_screen: console"); 552 553 sc->sc_nscreens--; 554 } 555 556 static int 557 omfb_show_screen(void *v, void *cookie, int waitok, 558 void (*cb)(void *, int, int), void *cbarg) 559 { 560 561 return 0; 562 } 563
Indexes created Fri Sep 26 08:10:20 GMT 2025