Annotation of sys/arch/hp300/dev/diofb.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: diofb.c,v 1.16 2006/11/29 19:08:19 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2005, Miodrag Vallat
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 18: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 19: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 20: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 21: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 23: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 24: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 25: * POSSIBILITY OF SUCH DAMAGE.
! 26: */
! 27: /*
! 28: * Copyright (c) 1988 University of Utah.
! 29: * Copyright (c) 1990, 1993
! 30: * The Regents of the University of California. All rights reserved.
! 31: *
! 32: * This code is derived from software contributed to Berkeley by
! 33: * the Systems Programming Group of the University of Utah Computer
! 34: * Science Department.
! 35: *
! 36: * Redistribution and use in source and binary forms, with or without
! 37: * modification, are permitted provided that the following conditions
! 38: * are met:
! 39: * 1. Redistributions of source code must retain the above copyright
! 40: * notice, this list of conditions and the following disclaimer.
! 41: * 2. Redistributions in binary form must reproduce the above copyright
! 42: * notice, this list of conditions and the following disclaimer in the
! 43: * documentation and/or other materials provided with the distribution.
! 44: * 3. Neither the name of the University nor the names of its contributors
! 45: * may be used to endorse or promote products derived from this software
! 46: * without specific prior written permission.
! 47: *
! 48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 58: * SUCH DAMAGE.
! 59: */
! 60:
! 61: #include <sys/param.h>
! 62: #include <sys/conf.h>
! 63: #include <sys/proc.h>
! 64: #include <sys/ioctl.h>
! 65: #include <sys/tty.h>
! 66: #include <sys/systm.h>
! 67: #include <sys/device.h>
! 68:
! 69: #include <machine/autoconf.h>
! 70: #include <machine/cpu.h>
! 71:
! 72: #include <hp300/dev/dioreg.h>
! 73: #include <hp300/dev/diovar.h>
! 74:
! 75: #include <dev/wscons/wsconsio.h>
! 76: #include <dev/wscons/wsdisplayvar.h>
! 77: #include <dev/rasops/rasops.h>
! 78:
! 79: #include <hp300/dev/diofbreg.h>
! 80: #include <hp300/dev/diofbvar.h>
! 81:
! 82: extern int rasops_alloc_cattr(void *, int, int, int, long *);
! 83:
! 84: int diofb_alloc_attr(void *, int, int, int, long *);
! 85: void diofb_copycols(void *, int, int, int, int);
! 86: void diofb_erasecols(void *, int, int, int, long);
! 87: void diofb_copyrows(void *, int, int, int);
! 88: void diofb_eraserows(void *, int, int, long);
! 89: void diofb_do_cursor(struct rasops_info *);
! 90:
! 91: /*
! 92: * Frame buffer geometry initialization
! 93: */
! 94:
! 95: int
! 96: diofb_fbinquire(struct diofb *fb, int scode, struct diofbreg *fbr)
! 97: {
! 98: int fboff, regsize;
! 99:
! 100: if (ISIIOVA(fbr))
! 101: fb->regaddr = (caddr_t)IIOP(fbr);
! 102: else
! 103: fb->regaddr = dio_scodetopa(scode);
! 104:
! 105: if (fb->fbwidth == 0 || fb->fbheight == 0) {
! 106: fb->fbwidth = (fbr->fbwmsb << 8) | fbr->fbwlsb;
! 107: fb->fbheight = (fbr->fbhmsb << 8) | fbr->fbhlsb;
! 108: }
! 109: fb->fbsize = fb->fbwidth * fb->fbheight;
! 110:
! 111: fb->regkva = (caddr_t)fbr;
! 112: fboff = (fbr->fbomsb << 8) | fbr->fbolsb;
! 113: fb->fbaddr = (caddr_t) (*((u_char *)fbr + fboff) << 16);
! 114:
! 115: if (fb->regaddr >= (caddr_t)DIOII_BASE) {
! 116: /*
! 117: * For DIO-II space the fbaddr just computed is
! 118: * the offset from the select code base (regaddr)
! 119: * of the framebuffer. Hence it is also implicitly
! 120: * the size of the set.
! 121: */
! 122: regsize = (int)fb->fbaddr;
! 123: fb->fbaddr += (int)fb->regaddr;
! 124: fb->fbkva = (caddr_t)fbr + regsize;
! 125: } else {
! 126: /*
! 127: * For internal or DIO-I space we need to map the separate
! 128: * framebuffer.
! 129: */
! 130: fb->fbkva = iomap(fb->fbaddr, fb->fbsize);
! 131: if (fb->fbkva == NULL)
! 132: return (ENOMEM);
! 133: }
! 134: if (fb->dwidth == 0 || fb->dheight == 0) {
! 135: fb->dwidth = (fbr->dwmsb << 8) | fbr->dwlsb;
! 136: fb->dheight = (fbr->dhmsb << 8) | fbr->dhlsb;
! 137: }
! 138:
! 139: /*
! 140: * Some displays, such as the DaVinci, appear to return a display
! 141: * height larger than the frame buffer height.
! 142: */
! 143: if (fb->dwidth > fb->fbwidth)
! 144: fb->dwidth = fb->fbwidth;
! 145: if (fb->dheight > fb->fbheight)
! 146: fb->dheight = fb->fbheight;
! 147:
! 148: fb->planes = fbr->num_planes;
! 149: if (fb->planes > 8)
! 150: fb->planes = 8;
! 151: fb->planemask = (1 << fb->planes) - 1;
! 152:
! 153: fb->mapmode = WSDISPLAYIO_MODE_DUMBFB;
! 154:
! 155: return (0);
! 156: }
! 157:
! 158: /*
! 159: * Frame buffer rasops and colormap setup
! 160: */
! 161:
! 162: void
! 163: diofb_fbsetup(struct diofb *fb)
! 164: {
! 165: struct rasops_info *ri = &fb->ri;
! 166:
! 167: /*
! 168: * Pretend we are an 8bpp frame buffer, unless ri_depth is already
! 169: * initialized, since this is how it is supposed to be addressed.
! 170: * (Hyperion forces 1bpp because it is really 1bpp addressed).
! 171: */
! 172: if (ri->ri_depth == 0)
! 173: ri->ri_depth = 8;
! 174: ri->ri_stride = (fb->fbwidth * ri->ri_depth) / 8;
! 175:
! 176: ri->ri_flg = RI_CENTER | RI_FULLCLEAR;
! 177: /* We don't really support colors on less than 4bpp frame buffers */
! 178: if (fb->planes < 4)
! 179: ri->ri_flg |= RI_FORCEMONO;
! 180: ri->ri_bits = fb->fbkva;
! 181: ri->ri_width = fb->dwidth;
! 182: ri->ri_height = fb->dheight;
! 183: ri->ri_hw = fb;
! 184:
! 185: /*
! 186: * Ask for an unholy big display, rasops will trim this to more
! 187: * reasonable values.
! 188: */
! 189: rasops_init(ri, 160, 160);
! 190:
! 191: diofb_resetcmap(fb);
! 192:
! 193: /*
! 194: * For low depth frame buffers, since we have faked a 8bpp frame buffer
! 195: * to rasops, we actually have to remove capabilities.
! 196: */
! 197: if (fb->planes == 4) {
! 198: ri->ri_ops.alloc_attr = diofb_alloc_attr;
! 199: ri->ri_caps &= ~WSSCREEN_HILIT;
! 200: }
! 201:
! 202: ri->ri_ops.copycols = diofb_copycols;
! 203: ri->ri_ops.erasecols = diofb_erasecols;
! 204: if (ri->ri_depth != 1) {
! 205: ri->ri_ops.copyrows = diofb_copyrows;
! 206: ri->ri_ops.eraserows = diofb_eraserows;
! 207: ri->ri_do_cursor = diofb_do_cursor;
! 208: }
! 209:
! 210: /* Clear entire display, including non visible areas */
! 211: (*fb->bmv)(fb, 0, 0, 0, 0, fb->fbwidth, fb->fbheight, RR_CLEAR, 0xff);
! 212:
! 213: strlcpy(fb->wsd.name, "std", sizeof(fb->wsd.name));
! 214: fb->wsd.ncols = ri->ri_cols;
! 215: fb->wsd.nrows = ri->ri_rows;
! 216: fb->wsd.textops = &ri->ri_ops;
! 217: fb->wsd.fontwidth = ri->ri_font->fontwidth;
! 218: fb->wsd.fontheight = ri->ri_font->fontheight;
! 219: fb->wsd.capabilities = ri->ri_caps;
! 220: }
! 221:
! 222: /*
! 223: * Setup default emulation mode colormap
! 224: */
! 225: void
! 226: diofb_resetcmap(struct diofb *fb)
! 227: {
! 228: const u_char *color;
! 229: u_int i;
! 230:
! 231: /* start with the rasops colormap */
! 232: color = (const u_char *)rasops_cmap;
! 233: for (i = 0; i < 256; i++) {
! 234: fb->cmap.r[i] = *color++;
! 235: fb->cmap.g[i] = *color++;
! 236: fb->cmap.b[i] = *color++;
! 237: }
! 238:
! 239: /*
! 240: * Tweak colormap
! 241: *
! 242: * Due to the way rasops cursor work, we need to provide
! 243: * copies of the 8 or 16 basic colors at extra locations
! 244: * in 4bpp and 6bpp mode. This is because missing planes
! 245: * accept writes but read back as zero.
! 246: *
! 247: * So, in 6bpp mode:
! 248: * 00 gets inverted to ff, read back as 3f
! 249: * 3f gets inverted to c0, read back as 00
! 250: * and in 4bpp mode:
! 251: * 00 gets inverted to ff, read back as 0f
! 252: * 0f gets inverted to f0, read back as 00
! 253: */
! 254:
! 255: switch (fb->planes) {
! 256: case 6:
! 257: /*
! 258: * 00-0f normal colors
! 259: * 30-3f inverted colors
! 260: * c0-cf normal colors
! 261: * f0-ff inverted colors
! 262: */
! 263: bcopy(fb->cmap.r + 0x00, fb->cmap.r + 0xc0, 0x10);
! 264: bcopy(fb->cmap.g + 0x00, fb->cmap.g + 0xc0, 0x10);
! 265: bcopy(fb->cmap.b + 0x00, fb->cmap.b + 0xc0, 0x10);
! 266: bcopy(fb->cmap.r + 0xf0, fb->cmap.r + 0x30, 0x10);
! 267: bcopy(fb->cmap.g + 0xf0, fb->cmap.g + 0x30, 0x10);
! 268: bcopy(fb->cmap.b + 0xf0, fb->cmap.b + 0x30, 0x10);
! 269: break;
! 270: case 4:
! 271: /*
! 272: * 00-07 normal colors
! 273: * 08-0f inverted colors
! 274: * highlighted colors are not available.
! 275: */
! 276: bcopy(fb->cmap.r + 0xf8, fb->cmap.r + 0x08, 0x08);
! 277: bcopy(fb->cmap.g + 0xf8, fb->cmap.g + 0x08, 0x08);
! 278: bcopy(fb->cmap.b + 0xf8, fb->cmap.b + 0x08, 0x08);
! 279: break;
! 280: }
! 281: }
! 282:
! 283: /*
! 284: * Attachment helpers
! 285: */
! 286:
! 287: void
! 288: diofb_cnattach(struct diofb *fb)
! 289: {
! 290: long defattr;
! 291: struct rasops_info *ri;
! 292:
! 293: ri = &fb->ri;
! 294: ri->ri_ops.alloc_attr(ri, 0, 0, 0, &defattr);
! 295: wsdisplay_cnattach(&fb->wsd, ri, 0, 0, defattr);
! 296: }
! 297:
! 298: void
! 299: diofb_end_attach(void *sc, struct wsdisplay_accessops *accessops,
! 300: struct diofb *fb, int console, const char *descr)
! 301: {
! 302: struct wsemuldisplaydev_attach_args waa;
! 303:
! 304: printf(": %dx%d", fb->dwidth, fb->dheight);
! 305:
! 306: if (fb->planes == 1)
! 307: printf(" monochrome");
! 308: else
! 309: printf("x%d", fb->planes);
! 310:
! 311: if (descr != NULL)
! 312: printf(" %s", descr);
! 313: printf(" frame buffer\n");
! 314:
! 315: fb->scrlist[0] = &fb->wsd;
! 316: fb->wsl.nscreens = 1;
! 317: fb->wsl.screens = (const struct wsscreen_descr **)fb->scrlist;
! 318:
! 319: waa.console = console;
! 320: waa.scrdata = &fb->wsl;
! 321: waa.accessops = accessops;
! 322: waa.accesscookie = fb;
! 323: waa.defaultscreens = 0;
! 324:
! 325: config_found((struct device *)sc, &waa, wsemuldisplaydevprint);
! 326: }
! 327:
! 328: /*
! 329: * Common wsdisplay emulops for DIO frame buffers
! 330: */
! 331:
! 332: int
! 333: diofb_alloc_attr(void *cookie, int fg, int bg, int flg, long *attr)
! 334: {
! 335: if ((flg & (WSATTR_BLINK | WSATTR_HILIT)) != 0)
! 336: return (EINVAL);
! 337:
! 338: return (rasops_alloc_cattr(cookie, fg, bg, flg, attr));
! 339: }
! 340:
! 341: void
! 342: diofb_copycols(void *cookie, int row, int src, int dst, int n)
! 343: {
! 344: struct rasops_info *ri = cookie;
! 345: struct diofb *fb = ri->ri_hw;
! 346:
! 347: n *= ri->ri_font->fontwidth;
! 348: src *= ri->ri_font->fontwidth;
! 349: dst *= ri->ri_font->fontwidth;
! 350: row *= ri->ri_font->fontheight;
! 351:
! 352: (*fb->bmv)(fb, ri->ri_xorigin + src, ri->ri_yorigin + row,
! 353: ri->ri_xorigin + dst, ri->ri_yorigin + row,
! 354: n, ri->ri_font->fontheight, RR_COPY, 0xff);
! 355: }
! 356:
! 357: void
! 358: diofb_copyrows(void *cookie, int src, int dst, int n)
! 359: {
! 360: struct rasops_info *ri = cookie;
! 361: struct diofb *fb = ri->ri_hw;
! 362:
! 363: n *= ri->ri_font->fontheight;
! 364: src *= ri->ri_font->fontheight;
! 365: dst *= ri->ri_font->fontheight;
! 366:
! 367: (*fb->bmv)(fb, ri->ri_xorigin, ri->ri_yorigin + src,
! 368: ri->ri_xorigin, ri->ri_yorigin + dst,
! 369: ri->ri_emuwidth, n, RR_COPY, 0xff);
! 370: }
! 371:
! 372: void
! 373: diofb_erasecols(void *cookie, int row, int col, int num, long attr)
! 374: {
! 375: struct rasops_info *ri = cookie;
! 376: struct diofb *fb = ri->ri_hw;
! 377: int fg, bg;
! 378: int snum, scol, srow;
! 379:
! 380: ri->ri_ops.unpack_attr(cookie, attr, &fg, &bg, NULL);
! 381:
! 382: snum = num * ri->ri_font->fontwidth;
! 383: scol = col * ri->ri_font->fontwidth + ri->ri_xorigin;
! 384: srow = row * ri->ri_font->fontheight + ri->ri_yorigin;
! 385:
! 386: /*
! 387: * If this is too tricky for the simple raster ops engine,
! 388: * pass the fun to rasops.
! 389: */
! 390: if ((*fb->bmv)(fb, scol, srow, scol, srow, snum,
! 391: ri->ri_font->fontheight, RR_CLEAR, 0xff ^ bg) != 0)
! 392: rasops_erasecols(cookie, row, col, num, attr);
! 393: }
! 394:
! 395: void
! 396: diofb_eraserows(void *cookie, int row, int num, long attr)
! 397: {
! 398: struct rasops_info *ri = cookie;
! 399: struct diofb *fb = ri->ri_hw;
! 400: int fg, bg;
! 401: int srow, snum;
! 402: int rc;
! 403:
! 404: ri->ri_ops.unpack_attr(cookie, attr, &fg, &bg, NULL);
! 405: bg ^= 0xff;
! 406:
! 407: if (num == ri->ri_rows && (ri->ri_flg & RI_FULLCLEAR)) {
! 408: rc = (*fb->bmv)(fb, 0, 0, 0, 0, ri->ri_width, ri->ri_height,
! 409: RR_CLEAR, bg);
! 410: } else {
! 411: srow = row * ri->ri_font->fontheight + ri->ri_yorigin;
! 412: snum = num * ri->ri_font->fontheight;
! 413: rc = (*fb->bmv)(fb, ri->ri_xorigin, srow, ri->ri_xorigin,
! 414: srow, ri->ri_emuwidth, snum, RR_CLEAR, bg);
! 415: }
! 416: if (rc != 0)
! 417: rasops_eraserows(cookie, row, num, attr);
! 418: }
! 419:
! 420: void
! 421: diofb_do_cursor(struct rasops_info *ri)
! 422: {
! 423: struct diofb *fb = ri->ri_hw;
! 424: int x, y;
! 425:
! 426: x = ri->ri_ccol * ri->ri_font->fontwidth + ri->ri_xorigin;
! 427: y = ri->ri_crow * ri->ri_font->fontheight + ri->ri_yorigin;
! 428: (*fb->bmv)(fb, x, y, x, y, ri->ri_font->fontwidth,
! 429: ri->ri_font->fontheight, RR_INVERT, 0xff);
! 430: }
! 431:
! 432: /*
! 433: * Common wsdisplay accessops for DIO frame buffers
! 434: */
! 435:
! 436: int
! 437: diofb_alloc_screen(void *v, const struct wsscreen_descr *type,
! 438: void **cookiep, int *curxp, int *curyp, long *attrp)
! 439: {
! 440: struct diofb *fb = v;
! 441: struct rasops_info *ri = &fb->ri;
! 442:
! 443: if (fb->nscreens > 0)
! 444: return (ENOMEM);
! 445:
! 446: *cookiep = ri;
! 447: *curxp = *curyp = 0;
! 448: ri->ri_ops.alloc_attr(ri, 0, 0, 0, attrp);
! 449: fb->nscreens++;
! 450:
! 451: return (0);
! 452: }
! 453:
! 454: void
! 455: diofb_free_screen(void *v, void *cookie)
! 456: {
! 457: struct diofb *fb = v;
! 458:
! 459: fb->nscreens--;
! 460: }
! 461:
! 462: int
! 463: diofb_show_screen(void *v, void *cookie, int waitok,
! 464: void (*cb)(void *, int, int), void *cbarg)
! 465: {
! 466: return (0);
! 467: }
! 468:
! 469: paddr_t
! 470: diofb_mmap(void * v, off_t offset, int prot)
! 471: {
! 472: struct diofb *fb = v;
! 473:
! 474: if ((offset & PAGE_MASK) != 0)
! 475: return (-1);
! 476:
! 477: switch (fb->mapmode) {
! 478: case WSDISPLAYIO_MODE_MAPPED:
! 479: if (offset >= 0 && offset < DIOFB_REGSPACE)
! 480: return (((paddr_t)fb->regaddr + offset) >> PGSHIFT);
! 481: offset -= DIOFB_REGSPACE;
! 482: /* FALLTHROUGH */
! 483: case WSDISPLAYIO_MODE_DUMBFB:
! 484: if (offset >= 0 && offset < fb->fbsize)
! 485: return (((paddr_t)fb->fbaddr + offset) >> PGSHIFT);
! 486: break;
! 487: }
! 488:
! 489: return (-1);
! 490: }
! 491:
! 492: int
! 493: diofb_getcmap(struct diofb *fb, struct wsdisplay_cmap *cm)
! 494: {
! 495: u_int index = cm->index, count = cm->count;
! 496: u_int colcount = 1 << fb->planes;
! 497: int error;
! 498:
! 499: if (index >= colcount || count > colcount - index)
! 500: return (EINVAL);
! 501:
! 502: if ((error = copyout(fb->cmap.r + index, cm->red, count)) != 0)
! 503: return (error);
! 504: if ((error = copyout(fb->cmap.g + index, cm->green, count)) != 0)
! 505: return (error);
! 506: if ((error = copyout(fb->cmap.b + index, cm->blue, count)) != 0)
! 507: return (error);
! 508:
! 509: return (0);
! 510: }
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