1 /* $NetBSD: lunafb.c,v 1.35 2014/07/25 16:40:12 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 1.35 2014/07/25 16:40:12 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 0xB1000000 /* video h-origin/v-origin */ 78 #define OMFB_PLANEMASK 0xB1040000 /* planemask register */ 79 #define OMFB_FB_WADDR 0xB1080008 /* common plane */ 80 #define OMFB_FB_RADDR 0xB10C0008 /* plane #0 */ 81 #define OMFB_ROPFUNC 0xB12C0000 /* ROP function code */ 82 #define OMFB_RAMDAC 0xC1100000 /* Bt454/Bt458 RAMDAC */ 83 #define OMFB_SIZE (0xB1300000 - 0xB1080000 + PAGE_SIZE) 84 85 struct hwcmap { 86 #define CMAP_SIZE 256 87 uint8_t r[CMAP_SIZE]; 88 uint8_t g[CMAP_SIZE]; 89 uint8_t b[CMAP_SIZE]; 90 }; 91 92 static const struct { 93 uint8_t r; 94 uint8_t g; 95 uint8_t b; 96 } ansicmap[16] = { 97 { 0, 0, 0}, 98 { 0x80, 0, 0}, 99 { 0, 0x80, 0}, 100 { 0x80, 0x80, 0}, 101 { 0, 0, 0x80}, 102 { 0x80, 0, 0x80}, 103 { 0, 0x80, 0x80}, 104 { 0xc0, 0xc0, 0xc0}, 105 { 0x80, 0x80, 0x80}, 106 { 0xff, 0, 0}, 107 { 0, 0xff, 0}, 108 { 0xff, 0xff, 0}, 109 { 0, 0, 0xff}, 110 { 0xff, 0, 0xff}, 111 { 0, 0xff, 0xff}, 112 { 0xff, 0xff, 0xff}, 113 }; 114 115 struct om_hwdevconfig { 116 int dc_wid; /* width of frame buffer */ 117 int dc_ht; /* height of frame buffer */ 118 int dc_depth; /* depth, bits per pixel */ 119 int dc_rowbytes; /* bytes in a FB scan line */ 120 int dc_cmsize; /* colormap size */ 121 struct hwcmap dc_cmap; /* software copy of colormap */ 122 vaddr_t dc_videobase; /* base of flat frame buffer */ 123 struct rasops_info dc_ri; /* raster blitter variables */ 124 }; 125 126 struct omfb_softc { 127 device_t sc_dev; /* base device */ 128 struct om_hwdevconfig *sc_dc; /* device configuration */ 129 int sc_nscreens; 130 int sc_mode; 131 }; 132 133 static int omgetcmap(struct omfb_softc *, struct wsdisplay_cmap *); 134 static int omsetcmap(struct omfb_softc *, struct wsdisplay_cmap *); 135 136 static struct om_hwdevconfig omfb_console_dc; 137 static void omfb_resetcmap(struct om_hwdevconfig *); 138 static void omfb_getdevconfig(paddr_t, struct om_hwdevconfig *); 139 140 static struct wsscreen_descr omfb_stdscreen = { 141 .name = "std" 142 }; 143 144 static const struct wsscreen_descr *_omfb_scrlist[] = { 145 &omfb_stdscreen, 146 }; 147 148 static const struct wsscreen_list omfb_screenlist = { 149 sizeof(_omfb_scrlist) / sizeof(struct wsscreen_descr *), _omfb_scrlist 150 }; 151 152 static int omfbioctl(void *, void *, u_long, void *, int, struct lwp *); 153 static paddr_t omfbmmap(void *, void *, off_t, int); 154 static int omfb_alloc_screen(void *, const struct wsscreen_descr *, 155 void **, int *, int *, long *); 156 static void omfb_free_screen(void *, void *); 157 static int omfb_show_screen(void *, void *, int, 158 void (*) (void *, int, int), void *); 159 160 static const struct wsdisplay_accessops omfb_accessops = { 161 .ioctl = omfbioctl, 162 .mmap = omfbmmap, 163 .alloc_screen = omfb_alloc_screen, 164 .free_screen = omfb_free_screen, 165 .show_screen = omfb_show_screen, 166 .load_font = NULL, 167 .pollc = NULL, 168 .scroll = NULL 169 }; 170 171 static int omfbmatch(device_t, cfdata_t, void *); 172 static void omfbattach(device_t, device_t, void *); 173 174 CFATTACH_DECL_NEW(fb, sizeof(struct omfb_softc), 175 omfbmatch, omfbattach, NULL, NULL); 176 177 extern int hwplanemask; /* hardware planemask; retrieved at boot */ 178 179 static int omfb_console; 180 int omfb_cnattach(void); 181 182 static int 183 omfbmatch(device_t parent, cfdata_t cf, void *aux) 184 { 185 struct mainbus_attach_args *ma = aux; 186 187 if (strcmp(ma->ma_name, fb_cd.cd_name)) 188 return 0; 189 #if 0 /* XXX badaddr() bombs if no framebuffer is installed */ 190 if (badaddr((void *)ma->ma_addr, 4)) 191 return 0; 192 #else 193 if (hwplanemask == 0) 194 return 0; 195 #endif 196 return 1; 197 } 198 199 static void 200 omfbattach(device_t parent, device_t self, void *args) 201 { 202 struct omfb_softc *sc = device_private(self); 203 struct wsemuldisplaydev_attach_args waa; 204 205 sc->sc_dev = self; 206 207 if (omfb_console) { 208 sc->sc_dc = &omfb_console_dc; 209 sc->sc_nscreens = 1; 210 } else { 211 sc->sc_dc = kmem_zalloc(sizeof(struct om_hwdevconfig), 212 KM_SLEEP); 213 omfb_getdevconfig(OMFB_FB_WADDR, sc->sc_dc); 214 } 215 aprint_normal(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht, 216 sc->sc_dc->dc_depth); 217 218 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 219 waa.console = omfb_console; 220 waa.scrdata = &omfb_screenlist; 221 waa.accessops = &omfb_accessops; 222 waa.accesscookie = sc; 223 224 config_found(self, &waa, wsemuldisplaydevprint); 225 } 226 227 /* EXPORT */ int 228 omfb_cnattach(void) 229 { 230 struct om_hwdevconfig *dc = &omfb_console_dc; 231 struct rasops_info *ri = &dc->dc_ri; 232 long defattr; 233 234 omfb_getdevconfig(OMFB_FB_WADDR, dc); 235 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 236 wsdisplay_cnattach(&omfb_stdscreen, ri, 0, 0, defattr); 237 omfb_console = 1; 238 return 0; 239 } 240 241 static int 242 omfbioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 243 { 244 struct omfb_softc *sc = v; 245 struct om_hwdevconfig *dc = sc->sc_dc; 246 int new_mode; 247 248 switch (cmd) { 249 case WSDISPLAYIO_GTYPE: 250 *(u_int *)data = WSDISPLAY_TYPE_LUNA; 251 return 0; 252 253 case WSDISPLAYIO_GINFO: 254 #define wsd_fbip ((struct wsdisplay_fbinfo *)data) 255 wsd_fbip->height = dc->dc_ht; 256 wsd_fbip->width = dc->dc_wid; 257 wsd_fbip->depth = dc->dc_depth; 258 wsd_fbip->cmsize = dc->dc_cmsize; 259 #undef fbt 260 return 0; 261 262 case WSDISPLAYIO_LINEBYTES: 263 *(u_int *)data = dc->dc_rowbytes; 264 return 0; 265 266 case WSDISPLAYIO_GETCMAP: 267 return omgetcmap(sc, (struct wsdisplay_cmap *)data); 268 269 case WSDISPLAYIO_PUTCMAP: 270 return omsetcmap(sc, (struct wsdisplay_cmap *)data); 271 272 case WSDISPLAYIO_SMODE: 273 new_mode = *(int *)data; 274 if (new_mode != sc->sc_mode) { 275 sc->sc_mode = new_mode; 276 if (new_mode == WSDISPLAYIO_MODE_EMUL) 277 omfb_resetcmap(dc); 278 } 279 return 0; 280 281 case WSDISPLAYIO_SVIDEO: 282 case WSDISPLAYIO_GVIDEO: 283 case WSDISPLAYIO_GCURPOS: 284 case WSDISPLAYIO_SCURPOS: 285 case WSDISPLAYIO_GCURMAX: 286 case WSDISPLAYIO_GCURSOR: 287 case WSDISPLAYIO_SCURSOR: 288 break; 289 } 290 return EPASSTHROUGH; 291 } 292 293 /* 294 * Return the address that would map the given device at the given 295 * offset, allowing for the given protection, or return -1 for error. 296 */ 297 static paddr_t 298 omfbmmap(void *v, void *vs, off_t offset, int prot) 299 { 300 struct omfb_softc *sc = v; 301 struct om_hwdevconfig *dc = sc->sc_dc; 302 paddr_t cookie = -1; 303 304 switch (sc->sc_mode) { 305 #if 0 306 case WSDISPLAYIO_MODE_MAPPED: 307 if (offset >= 0 && offset < OMFB_SIZE) 308 cookie = m68k_btop(m68k_trunc_page(dc->dc_videobase) + 309 offset); 310 break; 311 #endif 312 case WSDISPLAYIO_MODE_DUMBFB: 313 if (offset >= 0 && 314 offset < 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 int cmsize, error; 328 329 cmsize = sc->sc_dc->dc_cmsize; 330 if (index >= cmsize || count > cmsize - index) 331 return EINVAL; 332 333 error = copyout(&sc->sc_dc->dc_cmap.r[index], p->red, count); 334 if (error) 335 return error; 336 error = copyout(&sc->sc_dc->dc_cmap.g[index], p->green, count); 337 if (error) 338 return error; 339 error = copyout(&sc->sc_dc->dc_cmap.b[index], p->blue, count); 340 return error; 341 } 342 343 static int 344 omsetcmap(struct omfb_softc *sc, struct wsdisplay_cmap *p) 345 { 346 struct hwcmap cmap; 347 u_int index = p->index, count = p->count; 348 int cmsize, i, error; 349 350 cmsize = sc->sc_dc->dc_cmsize; 351 if (index >= cmsize || (index + count) > cmsize) 352 return (EINVAL); 353 354 error = copyin(p->red, &cmap.r[index], count); 355 if (error) 356 return error; 357 error = copyin(p->green, &cmap.g[index], count); 358 if (error) 359 return error; 360 error = copyin(p->blue, &cmap.b[index], count); 361 if (error) 362 return error; 363 364 memcpy(&sc->sc_dc->dc_cmap.r[index], &cmap.r[index], count); 365 memcpy(&sc->sc_dc->dc_cmap.g[index], &cmap.g[index], count); 366 memcpy(&sc->sc_dc->dc_cmap.b[index], &cmap.b[index], count); 367 if (hwplanemask == 0x0f) { 368 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 369 odac->bt_addr = index; 370 for (i = index; i < index + count; i++) { 371 odac->bt_cmap = sc->sc_dc->dc_cmap.r[i]; 372 odac->bt_cmap = sc->sc_dc->dc_cmap.g[i]; 373 odac->bt_cmap = sc->sc_dc->dc_cmap.b[i]; 374 } 375 } else if (hwplanemask == 0xff) { 376 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 377 ndac->bt_addr = index; 378 for (i = index; i < index + count; i++) { 379 ndac->bt_cmap = sc->sc_dc->dc_cmap.r[i]; 380 ndac->bt_cmap = sc->sc_dc->dc_cmap.g[i]; 381 ndac->bt_cmap = sc->sc_dc->dc_cmap.b[i]; 382 } 383 } 384 return 0; 385 } 386 387 static void 388 omfb_resetcmap(struct om_hwdevconfig *dc) 389 { 390 int i; 391 392 if (hwplanemask == 0x01) { 393 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 394 395 /* 396 * On 1bpp framebuffer, only plane P0 has framebuffer memory 397 * and other planes seems pulled up, i.e. always 1. 398 * Set white only for a palette (P0,P1,P2,P3) = (1,1,1,1). 399 */ 400 odac->bt_addr = 0; 401 for (i = 0; i < 15; i++) { 402 odac->bt_cmap = dc->dc_cmap.r[i] = 0; 403 odac->bt_cmap = dc->dc_cmap.g[i] = 0; 404 odac->bt_cmap = dc->dc_cmap.b[i] = 0; 405 } 406 /* 407 * The B/W video connector is connected to IOG of Bt454, 408 * and IOR and IOB are unused. 409 */ 410 odac->bt_cmap = dc->dc_cmap.r[15] = 0; 411 odac->bt_cmap = dc->dc_cmap.g[15] = 255; 412 odac->bt_cmap = dc->dc_cmap.b[15] = 0; 413 } else if (hwplanemask == 0x0f) { 414 struct bt454 *odac = (struct bt454 *)OMFB_RAMDAC; 415 416 odac->bt_addr = 0; 417 for (i = 0; i < 16; i++) { 418 odac->bt_cmap = dc->dc_cmap.r[i] = ansicmap[i].r; 419 odac->bt_cmap = dc->dc_cmap.g[i] = ansicmap[i].g; 420 odac->bt_cmap = dc->dc_cmap.b[i] = ansicmap[i].b; 421 } 422 } else if (hwplanemask == 0xff) { 423 struct bt458 *ndac = (struct bt458 *)OMFB_RAMDAC; 424 425 /* 426 * Initialize the Bt458. When we write to control registers, 427 * the address is not incremented automatically. So we specify 428 * it ourselves for each control register. 429 */ 430 ndac->bt_addr = 0x04; 431 ndac->bt_ctrl = 0xff; /* all planes will be read */ 432 ndac->bt_addr = 0x05; 433 ndac->bt_ctrl = 0x00; /* all planes have non-blink */ 434 ndac->bt_addr = 0x06; 435 ndac->bt_ctrl = 0x40; /* pallete enabled, ovly plane disabled */ 436 ndac->bt_addr = 0x07; 437 ndac->bt_ctrl = 0x00; /* no test mode */ 438 439 /* 440 * Set ANSI 16 colors. We only supports 4bpp console right 441 * now, repeat 16 colors in 256 colormap. 442 */ 443 ndac->bt_addr = 0; 444 for (i = 0; i < 256; i++) { 445 ndac->bt_cmap = dc->dc_cmap.r[i] = ansicmap[i % 16].r; 446 ndac->bt_cmap = dc->dc_cmap.g[i] = ansicmap[i % 16].g; 447 ndac->bt_cmap = dc->dc_cmap.b[i] = ansicmap[i % 16].b; 448 } 449 } 450 } 451 452 static void 453 omfb_getdevconfig(paddr_t paddr, struct om_hwdevconfig *dc) 454 { 455 int bpp, i; 456 struct rasops_info *ri; 457 union { 458 struct { short h, v; } p; 459 uint32_t u; 460 } rfcnt; 461 462 switch (hwplanemask) { 463 case 0xff: 464 bpp = 8; /* XXX check monochrome bit in DIPSW */ 465 break; 466 default: 467 case 0x0f: 468 bpp = 4; /* XXX check monochrome bit in DIPSW */ 469 break; 470 case 1: 471 bpp = 1; 472 break; 473 } 474 dc->dc_wid = 1280; 475 dc->dc_ht = 1024; 476 dc->dc_depth = bpp; 477 dc->dc_rowbytes = 2048 / 8; 478 dc->dc_cmsize = (bpp == 1) ? 0 : 1 << bpp; 479 dc->dc_videobase = paddr; 480 481 omfb_resetcmap(dc); 482 483 /* adjust h/v origin on screen */ 484 rfcnt.p.h = 7; 485 rfcnt.p.v = -27; 486 /* single write of 0x007ffe6 */ 487 *(volatile uint32_t *)OMFB_RFCNT = rfcnt.u; 488 489 /* clear the screen */ 490 *(volatile uint32_t *)OMFB_PLANEMASK = 0xff; 491 ((volatile uint32_t *)OMFB_ROPFUNC)[5] = ~0; /* ROP copy */ 492 for (i = 0; i < dc->dc_ht * dc->dc_rowbytes / sizeof(uint32_t); i++) 493 *((volatile uint32_t *)dc->dc_videobase + i) = 0; 494 *(volatile uint32_t *)OMFB_PLANEMASK = 0x01; 495 496 /* initialize the raster */ 497 ri = &dc->dc_ri; 498 ri->ri_width = dc->dc_wid; 499 ri->ri_height = dc->dc_ht; 500 ri->ri_depth = 1; /* since planes are independently addressed */ 501 ri->ri_stride = dc->dc_rowbytes; 502 ri->ri_bits = (void *)dc->dc_videobase; 503 ri->ri_flg = RI_CENTER; 504 if (dc == &omfb_console_dc) 505 ri->ri_flg |= RI_NO_AUTO; 506 ri->ri_hw = dc; 507 508 if (bpp == 4 || bpp == 8) 509 omrasops4_init(ri, 34, 80); 510 else 511 omrasops1_init(ri, 34, 80); 512 513 omfb_stdscreen.nrows = ri->ri_rows; 514 omfb_stdscreen.ncols = ri->ri_cols; 515 omfb_stdscreen.textops = &ri->ri_ops; 516 omfb_stdscreen.capabilities = ri->ri_caps; 517 omfb_stdscreen.fontwidth = ri->ri_font->fontwidth; 518 omfb_stdscreen.fontheight = ri->ri_font->fontheight; 519 } 520 521 static int 522 omfb_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, 523 int *curxp, int *curyp, long *attrp) 524 { 525 struct omfb_softc *sc = v; 526 struct rasops_info *ri = &sc->sc_dc->dc_ri; 527 528 if (sc->sc_nscreens > 0) 529 return ENOMEM; 530 531 *cookiep = ri; 532 *curxp = 0; 533 *curyp = 0; 534 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, attrp); 535 sc->sc_nscreens++; 536 return 0; 537 } 538 539 static void 540 omfb_free_screen(void *v, void *cookie) 541 { 542 struct omfb_softc *sc = v; 543 544 if (sc->sc_dc == &omfb_console_dc) 545 panic("omfb_free_screen: console"); 546 547 sc->sc_nscreens--; 548 } 549 550 static int 551 omfb_show_screen(void *v, void *cookie, int waitok, 552 void (*cb)(void *, int, int), void *cbarg) 553 { 554 555 return 0; 556 } 557