Annotation of sys/arch/luna88k/dev/omrasops.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: omrasops.c,v 1.4 2006/11/29 19:08:22 miod Exp $ */
! 2: /* $NetBSD: omrasops.c,v 1.1 2000/01/05 08:48:56 nisimura Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2000 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Tohru Nishimura.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * Designed speficically for 'm68k bitorder';
! 42: * - most significant byte is stored at lower address,
! 43: * - most significant bit is displayed at left most on screen.
! 44: * Implementation relies on;
! 45: * - every memory references is done in aligned 32bit chunk,
! 46: * - font glyphs are stored in 32bit padded.
! 47: */
! 48:
! 49: #include <sys/param.h>
! 50: #include <sys/systm.h>
! 51: #include <sys/device.h>
! 52:
! 53: #include <dev/wscons/wsconsio.h>
! 54: #include <dev/wscons/wsdisplayvar.h>
! 55: #include <dev/rasops/rasops.h>
! 56:
! 57: /* wscons emulator operations */
! 58: void om_cursor(void *, int, int, int);
! 59: void om_putchar(void *, int, int, u_int, long);
! 60: void om_copycols(void *, int, int, int, int);
! 61: void om_copyrows(void *, int, int, int num);
! 62: void om_erasecols(void *, int, int, int, long);
! 63: void om_eraserows(void *, int, int, long);
! 64:
! 65: #define ALL1BITS (~0U)
! 66: #define ALL0BITS (0U)
! 67: #define BLITWIDTH (32)
! 68: #define ALIGNMASK (0x1f)
! 69: #define BYTESDONE (4)
! 70:
! 71: #define W(p) (*(u_int32_t *)(p))
! 72: #define R(p) (*(u_int32_t *)((caddr_t)(p) + 0x40000))
! 73:
! 74: /*
! 75: * Blit a character at the specified co-ordinates.
! 76: */
! 77: void
! 78: om_putchar(cookie, row, startcol, uc, attr)
! 79: void *cookie;
! 80: int row, startcol;
! 81: u_int uc;
! 82: long attr;
! 83: {
! 84: struct rasops_info *ri = cookie;
! 85: caddr_t p;
! 86: int scanspan, startx, height, width, align, y;
! 87: u_int32_t lmask, rmask, glyph, inverse;
! 88: int i, fg, bg;
! 89: u_int8_t *fb;
! 90:
! 91: scanspan = ri->ri_stride;
! 92: y = ri->ri_font->fontheight * row;
! 93: startx = ri->ri_font->fontwidth * startcol;
! 94: height = ri->ri_font->fontheight;
! 95: fb = ri->ri_font->data +
! 96: (uc - ri->ri_font->firstchar) * ri->ri_fontscale;
! 97: ri->ri_ops.unpack_attr(cookie, attr, &fg, &bg, NULL);
! 98: inverse = (bg != 0) ? ALL1BITS : ALL0BITS;
! 99:
! 100: p = (caddr_t)ri->ri_bits + y * scanspan + ((startx / 32) * 4);
! 101: align = startx & ALIGNMASK;
! 102: width = ri->ri_font->fontwidth + align;
! 103: lmask = ALL1BITS >> align;
! 104: rmask = ALL1BITS << (-width & ALIGNMASK);
! 105: if (width <= BLITWIDTH) {
! 106: lmask &= rmask;
! 107: while (height > 0) {
! 108: glyph = 0;
! 109: for (i = ri->ri_font->stride; i != 0; i--)
! 110: glyph = (glyph << 8) | *fb++;
! 111: glyph <<= (4 - ri->ri_font->stride) * NBBY;
! 112: glyph = (glyph >> align) ^ inverse;
! 113: W(p) = (R(p) & ~lmask) | (glyph & lmask);
! 114: p += scanspan;
! 115: height--;
! 116: }
! 117: }
! 118: else {
! 119: caddr_t q = p;
! 120: u_int32_t lhalf, rhalf;
! 121:
! 122: while (height > 0) {
! 123: glyph = 0;
! 124: for (i = ri->ri_font->stride; i != 0; i--)
! 125: glyph = (glyph << 8) | *fb++;
! 126: glyph <<= (4 - ri->ri_font->stride) * NBBY;
! 127: lhalf = (glyph >> align) ^ inverse;
! 128: W(p) = (R(p) & ~lmask) | (lhalf & lmask);
! 129: p += BYTESDONE;
! 130: rhalf = (glyph << (BLITWIDTH - align)) ^ inverse;
! 131: W(p) = (rhalf & rmask) | (R(p) & ~rmask);
! 132:
! 133: p = (q += scanspan);
! 134: height--;
! 135: }
! 136: }
! 137: }
! 138:
! 139: void
! 140: om_erasecols(cookie, row, startcol, ncols, attr)
! 141: void *cookie;
! 142: int row, startcol, ncols;
! 143: long attr;
! 144: {
! 145: struct rasops_info *ri = cookie;
! 146: caddr_t p;
! 147: int scanspan, startx, height, width, align, w, y;
! 148: u_int32_t lmask, rmask, fill;
! 149:
! 150: scanspan = ri->ri_stride;
! 151: y = ri->ri_font->fontheight * row;
! 152: startx = ri->ri_font->fontwidth * startcol;
! 153: height = ri->ri_font->fontheight;
! 154: w = ri->ri_font->fontwidth * ncols;
! 155: fill = (attr != 0) ? ALL1BITS : ALL0BITS;
! 156:
! 157: p = (caddr_t)ri->ri_bits + y * scanspan + ((startx / 32) * 4);
! 158: align = startx & ALIGNMASK;
! 159: width = w + align;
! 160: lmask = ALL1BITS >> align;
! 161: rmask = ALL1BITS << (-width & ALIGNMASK);
! 162: if (width <= BLITWIDTH) {
! 163: lmask &= rmask;
! 164: fill &= lmask;
! 165: while (height > 0) {
! 166: W(p) = (R(p) & ~lmask) | fill;
! 167: p += scanspan;
! 168: height--;
! 169: }
! 170: }
! 171: else {
! 172: caddr_t q = p;
! 173: while (height > 0) {
! 174: W(p) = (R(p) & ~lmask) | (fill & lmask);
! 175: width -= 2 * BLITWIDTH;
! 176: while (width > 0) {
! 177: p += BYTESDONE;
! 178: W(p) = fill;
! 179: width -= BLITWIDTH;
! 180: }
! 181: p += BYTESDONE;
! 182: W(p) = (fill & rmask) | (R(p) & ~rmask);
! 183:
! 184: p = (q += scanspan);
! 185: width = w + align;
! 186: height--;
! 187: }
! 188: }
! 189: }
! 190:
! 191: void
! 192: om_eraserows(cookie, startrow, nrows, attr)
! 193: void *cookie;
! 194: int startrow, nrows;
! 195: long attr;
! 196: {
! 197: struct rasops_info *ri = cookie;
! 198: caddr_t p, q;
! 199: int scanspan, starty, height, width, w;
! 200: u_int32_t rmask, fill;
! 201:
! 202: scanspan = ri->ri_stride;
! 203: starty = ri->ri_font->fontheight * startrow;
! 204: height = ri->ri_font->fontheight * nrows;
! 205: w = ri->ri_emuwidth;
! 206: fill = (attr == 1) ? ALL1BITS : ALL0BITS;
! 207:
! 208: p = (caddr_t)ri->ri_bits + starty * scanspan;
! 209: width = w;
! 210: rmask = ALL1BITS << (-width & ALIGNMASK);
! 211: q = p;
! 212: while (height > 0) {
! 213: W(p) = fill; /* always aligned */
! 214: width -= 2 * BLITWIDTH;
! 215: while (width > 0) {
! 216: p += BYTESDONE;
! 217: W(p) = fill;
! 218: width -= BLITWIDTH;
! 219: }
! 220: p += BYTESDONE;
! 221: W(p) = (fill & rmask) | (R(p) & ~rmask);
! 222: p = (q += scanspan);
! 223: width = w;
! 224: height--;
! 225: }
! 226: }
! 227:
! 228: void
! 229: om_copyrows(cookie, srcrow, dstrow, nrows)
! 230: void *cookie;
! 231: int srcrow, dstrow, nrows;
! 232: {
! 233: struct rasops_info *ri = cookie;
! 234: caddr_t p, q;
! 235: int scanspan, offset, srcy, height, width, w;
! 236: u_int32_t rmask;
! 237:
! 238: scanspan = ri->ri_stride;
! 239: height = ri->ri_font->fontheight * nrows;
! 240: offset = (dstrow - srcrow) * scanspan * ri->ri_font->fontheight;
! 241: srcy = ri->ri_font->fontheight * srcrow;
! 242: if (srcrow < dstrow && srcrow + nrows > dstrow) {
! 243: scanspan = -scanspan;
! 244: srcy += height;
! 245: }
! 246:
! 247: p = (caddr_t)ri->ri_bits + srcy * ri->ri_stride;
! 248: w = ri->ri_emuwidth;
! 249: width = w;
! 250: rmask = ALL1BITS << (-width & ALIGNMASK);
! 251: q = p;
! 252: while (height > 0) {
! 253: W(p + offset) = R(p); /* always aligned */
! 254: width -= 2 * BLITWIDTH;
! 255: while (width > 0) {
! 256: p += BYTESDONE;
! 257: W(p + offset) = R(p);
! 258: width -= BLITWIDTH;
! 259: }
! 260: p += BYTESDONE;
! 261: W(p + offset) = (R(p) & rmask) | (R(p + offset) & ~rmask);
! 262:
! 263: p = (q += scanspan);
! 264: width = w;
! 265: height--;
! 266: }
! 267: }
! 268:
! 269: void
! 270: om_copycols(cookie, startrow, srccol, dstcol, ncols)
! 271: void *cookie;
! 272: int startrow, srccol, dstcol, ncols;
! 273: {
! 274: struct rasops_info *ri = cookie;
! 275: caddr_t sp, dp, basep;
! 276: int scanspan, height, width, align, shift, w, y, srcx, dstx;
! 277: u_int32_t lmask, rmask;
! 278:
! 279: scanspan = ri->ri_stride;
! 280: y = ri->ri_font->fontheight * startrow;
! 281: srcx = ri->ri_font->fontwidth * srccol;
! 282: dstx = ri->ri_font->fontwidth * dstcol;
! 283: height = ri->ri_font->fontheight;
! 284: w = ri->ri_font->fontwidth * ncols;
! 285: basep = (caddr_t)ri->ri_bits + y * scanspan;
! 286:
! 287: align = shift = srcx & ALIGNMASK;
! 288: width = w + align;
! 289: align = dstx & ALIGNMASK;
! 290: lmask = ALL1BITS >> align;
! 291: rmask = ALL1BITS << (-(w + align) & ALIGNMASK);
! 292: shift = align - shift;
! 293: sp = basep + (srcx / 32) * 4;
! 294: dp = basep + (dstx / 32) * 4;
! 295:
! 296: if (shift != 0)
! 297: goto hardluckalignment;
! 298:
! 299: /* alignments comfortably match */
! 300: if (width <= BLITWIDTH) {
! 301: lmask &= rmask;
! 302: while (height > 0) {
! 303: W(dp) = (R(dp) & ~lmask) | (R(sp) & lmask);
! 304: dp += scanspan;
! 305: sp += scanspan;
! 306: height--;
! 307: }
! 308: }
! 309: /* copy forward (left-to-right) */
! 310: else if (dstcol < srccol || srccol + ncols < dstcol) {
! 311: caddr_t sq = sp, dq = dp;
! 312:
! 313: w = width;
! 314: while (height > 0) {
! 315: W(dp) = (R(dp) & ~lmask) | (R(sp) & lmask);
! 316: width -= 2 * BLITWIDTH;
! 317: while (width > 0) {
! 318: sp += BYTESDONE;
! 319: dp += BYTESDONE;
! 320: W(dp) = R(sp);
! 321: width -= BLITWIDTH;
! 322: }
! 323: sp += BYTESDONE;
! 324: dp += BYTESDONE;
! 325: W(dp) = (R(sp) & rmask) | (R(dp) & ~rmask);
! 326: sp = (sq += scanspan);
! 327: dp = (dq += scanspan);
! 328: width = w;
! 329: height--;
! 330: }
! 331: }
! 332: /* copy backward (right-to-left) */
! 333: else {
! 334: caddr_t sq, dq;
! 335:
! 336: sq = (sp += width / 32 * 4);
! 337: dq = (dp += width / 32 * 4);
! 338: w = width;
! 339: while (height > 0) {
! 340: W(dp) = (R(sp) & rmask) | (R(dp) & ~rmask);
! 341: width -= 2 * BLITWIDTH;
! 342: while (width > 0) {
! 343: sp -= BYTESDONE;
! 344: dp -= BYTESDONE;
! 345: W(dp) = R(sp);
! 346: width -= BLITWIDTH;
! 347: }
! 348: sp -= BYTESDONE;
! 349: dp -= BYTESDONE;
! 350: W(dp) = (R(dp) & ~lmask) | (R(sp) & lmask);
! 351:
! 352: sp = (sq += scanspan);
! 353: dp = (dq += scanspan);
! 354: width = w;
! 355: height--;
! 356: }
! 357: }
! 358: return;
! 359:
! 360: hardluckalignment:
! 361: /* alignments painfully disagree */
! 362: }
! 363:
! 364: /*
! 365: * Position|{enable|disable} the cursor at the specified location.
! 366: */
! 367: void
! 368: om_cursor(cookie, on, row, col)
! 369: void *cookie;
! 370: int on, row, col;
! 371: {
! 372: struct rasops_info *ri = cookie;
! 373: caddr_t p;
! 374: int scanspan, startx, height, width, align, y;
! 375: u_int32_t lmask, rmask, image;
! 376:
! 377: if (!on) {
! 378: /* make sure it's on */
! 379: if ((ri->ri_flg & RI_CURSOR) == 0)
! 380: return;
! 381:
! 382: row = ri->ri_crow;
! 383: col = ri->ri_ccol;
! 384: } else {
! 385: /* unpaint the old copy. */
! 386: ri->ri_crow = row;
! 387: ri->ri_ccol = col;
! 388: }
! 389:
! 390: scanspan = ri->ri_stride;
! 391: y = ri->ri_font->fontheight * row;
! 392: startx = ri->ri_font->fontwidth * col;
! 393: height = ri->ri_font->fontheight;
! 394:
! 395: p = (caddr_t)ri->ri_bits + y * scanspan + ((startx / 32) * 4);
! 396: align = startx & ALIGNMASK;
! 397: width = ri->ri_font->fontwidth + align;
! 398: lmask = ALL1BITS >> align;
! 399: rmask = ALL1BITS << (-width & ALIGNMASK);
! 400: if (width <= BLITWIDTH) {
! 401: lmask &= rmask;
! 402: while (height > 0) {
! 403: image = R(p);
! 404: W(p) = (image & ~lmask) | ((image ^ ALL1BITS) & lmask);
! 405: p += scanspan;
! 406: height--;
! 407: }
! 408: }
! 409: else {
! 410: caddr_t q = p;
! 411:
! 412: while (height > 0) {
! 413: image = R(p);
! 414: W(p) = (image & ~lmask) | ((image ^ ALL1BITS) & lmask);
! 415: p += BYTESDONE;
! 416: image = R(p);
! 417: W(p) = ((image ^ ALL1BITS) & rmask) | (image & ~rmask);
! 418:
! 419: p = (q += scanspan);
! 420: height--;
! 421: }
! 422: }
! 423: ri->ri_flg ^= RI_CURSOR;
! 424: }
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