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Annotation of Net2/arch/hp300/dev/ite_dv.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 University of Utah.
        !             3:  * Copyright (c) 1990 The Regents of the University of California.
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * This code is derived from software contributed to Berkeley by
        !             7:  * the Systems Programming Group of the University of Utah Computer
        !             8:  * Science Department.
        !             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:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  *
        !            38:  * from: Utah $Hdr: ite_dv.c 1.7 91/01/21$
        !            39:  *
        !            40:  *     @(#)ite_dv.c    7.5 (Berkeley) 5/7/91
        !            41:  */
        !            42: 
        !            43: #include "ite.h"
        !            44: #if NITE > 0
        !            45: 
        !            46: #include "param.h"
        !            47: #include "conf.h"
        !            48: #include "proc.h"
        !            49: #include "ioctl.h"
        !            50: #include "tty.h"
        !            51: #include "systm.h"
        !            52: 
        !            53: #include "itevar.h"
        !            54: #include "itereg.h"
        !            55: #include "grf_dvreg.h"
        !            56: 
        !            57: #include "machine/cpu.h"
        !            58: 
        !            59: /* XXX */
        !            60: #include "grfioctl.h"
        !            61: #include "grfvar.h"
        !            62: 
        !            63: #define REGBASE                ((struct dvboxfb *)(ip->regbase))
        !            64: #define WINDOWMOVER    dvbox_windowmove
        !            65: 
        !            66: dvbox_init(ip)
        !            67:        struct ite_softc *ip;
        !            68: {
        !            69:        int i;
        !            70:        
        !            71:        /* XXX */
        !            72:        if (ip->regbase == 0) {
        !            73:                struct grf_softc *gp = &grf_softc[ip - ite_softc];
        !            74:                ip->regbase = gp->g_regkva;
        !            75:                ip->fbbase = gp->g_fbkva;
        !            76:        }
        !            77: 
        !            78:        dv_reset(REGADDR);
        !            79: 
        !            80:        /*
        !            81:         * Turn on frame buffer, turn on overlay planes, set replacement
        !            82:         * rule, enable top overlay plane writes for ite, disable all frame
        !            83:         * buffer planes, set byte per pixel, and display frame buffer 0.
        !            84:         * Lastly, turn on the box.
        !            85:         */
        !            86:        REGBASE->interrupt = 0x04;
        !            87:        REGBASE->drive     = 0x10;              
        !            88:        REGBASE->rep_rule  = RR_COPY << 4 | RR_COPY;
        !            89:        REGBASE->opwen     = 0x01;
        !            90:        REGBASE->fbwen     = 0x0;
        !            91:        REGBASE->fold      = 0x01;
        !            92:        REGBASE->vdrive    = 0x0;
        !            93:        REGBASE->dispen    = 0x01;
        !            94: 
        !            95:        /*
        !            96:         * Video enable top overlay plane.
        !            97:         */
        !            98:        REGBASE->opvenp = 0x01;
        !            99:        REGBASE->opvens = 0x01;
        !           100: 
        !           101:        /*
        !           102:         * Make sure that overlay planes override frame buffer planes.
        !           103:         */
        !           104:        REGBASE->ovly0p  = 0x0;
        !           105:        REGBASE->ovly0s  = 0x0;
        !           106:        REGBASE->ovly1p  = 0x0;
        !           107:        REGBASE->ovly1s  = 0x0;
        !           108:        REGBASE->fv_trig = 0x1;
        !           109:        DELAY(100);
        !           110: 
        !           111:        /*
        !           112:         * Setup the overlay colormaps. Need to set the 0,1 (black/white)
        !           113:         * color for both banks.
        !           114:         */
        !           115: 
        !           116:        for (i = 0; i <= 1; i++) {
        !           117:                REGBASE->cmapbank = i;
        !           118:                REGBASE->rgb[0].red   = 0x00;
        !           119:                REGBASE->rgb[0].green = 0x00;
        !           120:                REGBASE->rgb[0].blue  = 0x00;
        !           121:                REGBASE->rgb[1].red   = 0xFF;
        !           122:                REGBASE->rgb[1].green = 0xFF;
        !           123:                REGBASE->rgb[1].blue  = 0xFF;
        !           124:        }
        !           125:        REGBASE->cmapbank = 0;
        !           126:        
        !           127:        db_waitbusy(REGADDR);
        !           128: 
        !           129:        ite_devinfo(ip);
        !           130:        ite_fontinit(ip);
        !           131: 
        !           132:        /*
        !           133:         * Clear the (visible) framebuffer.
        !           134:         */
        !           135:        dvbox_windowmove(ip, 0, 0, 0, 0, ip->dheight, ip->dwidth, RR_CLEAR);
        !           136:        db_waitbusy(REGADDR);
        !           137: 
        !           138:        /*
        !           139:         * Stash the inverted cursor.
        !           140:         */
        !           141:        dvbox_windowmove(ip, charY(ip, ' '), charX(ip, ' '),
        !           142:                         ip->cblanky, ip->cblankx, ip->ftheight,
        !           143:                         ip->ftwidth, RR_COPYINVERTED);
        !           144: }
        !           145: 
        !           146: dvbox_deinit(ip)
        !           147:        struct ite_softc *ip;
        !           148: {
        !           149:        dvbox_windowmove(ip, 0, 0, 0, 0, ip->fbheight, ip->fbwidth, RR_CLEAR);
        !           150:        db_waitbusy(REGADDR);
        !           151: 
        !           152:        ip->flags &= ~ITE_INITED;
        !           153: }
        !           154: 
        !           155: dvbox_putc(ip, c, dy, dx, mode)
        !           156:        register struct ite_softc *ip;
        !           157:         register int dy, dx;
        !           158:        int c, mode;
        !           159: {
        !           160:         register int wrr = ((mode == ATTR_INV) ? RR_COPYINVERTED : RR_COPY);
        !           161:        
        !           162:        dvbox_windowmove(ip, charY(ip, c), charX(ip, c),
        !           163:                         dy * ip->ftheight, dx * ip->ftwidth,
        !           164:                         ip->ftheight, ip->ftwidth, wrr);
        !           165: }
        !           166: 
        !           167: dvbox_cursor(ip, flag)
        !           168:        register struct ite_softc *ip;
        !           169:         register int flag;
        !           170: {
        !           171:        if (flag == DRAW_CURSOR)
        !           172:                draw_cursor(ip)
        !           173:        else if (flag == MOVE_CURSOR) {
        !           174:                erase_cursor(ip)
        !           175:                draw_cursor(ip)
        !           176:        }
        !           177:        else
        !           178:                erase_cursor(ip)
        !           179: }
        !           180: 
        !           181: dvbox_clear(ip, sy, sx, h, w)
        !           182:        struct ite_softc *ip;
        !           183:        register int sy, sx, h, w;
        !           184: {
        !           185:        dvbox_windowmove(ip, sy * ip->ftheight, sx * ip->ftwidth,
        !           186:                         sy * ip->ftheight, sx * ip->ftwidth, 
        !           187:                         h  * ip->ftheight, w  * ip->ftwidth,
        !           188:                         RR_CLEAR);
        !           189: }
        !           190: 
        !           191: dvbox_scroll(ip, sy, sx, count, dir)
        !           192:         register struct ite_softc *ip;
        !           193:         register int sy, count;
        !           194:         int dir, sx;
        !           195: {
        !           196:        register int dy;
        !           197:        register int dx = sx;
        !           198:        register int height = 1;
        !           199:        register int width = ip->cols;
        !           200: 
        !           201:        dvbox_cursor(ip, ERASE_CURSOR);
        !           202: 
        !           203:        if (dir == SCROLL_UP) {
        !           204:                dy = sy - count;
        !           205:                height = ip->rows - sy;
        !           206:        }
        !           207:        else if (dir == SCROLL_DOWN) {
        !           208:                dy = sy + count;
        !           209:                height = ip->rows - dy - 1;
        !           210:        }
        !           211:        else if (dir == SCROLL_RIGHT) {
        !           212:                dy = sy;
        !           213:                dx = sx + count;
        !           214:                width = ip->cols - dx;
        !           215:        }
        !           216:        else {
        !           217:                dy = sy;
        !           218:                dx = sx - count;
        !           219:                width = ip->cols - sx;
        !           220:        }               
        !           221: 
        !           222:        dvbox_windowmove(ip, sy * ip->ftheight, sx * ip->ftwidth,
        !           223:                         dy * ip->ftheight, dx * ip->ftwidth,
        !           224:                         height * ip->ftheight,
        !           225:                         width  * ip->ftwidth, RR_COPY);
        !           226: }
        !           227: 
        !           228: dvbox_windowmove(ip, sy, sx, dy, dx, h, w, func)
        !           229:        struct ite_softc *ip;
        !           230:        int sy, sx, dy, dx, h, w, func;
        !           231: {
        !           232:        register struct dvboxfb *dp = REGBASE;
        !           233:        if (h == 0 || w == 0)
        !           234:                return;
        !           235:        
        !           236:        db_waitbusy(REGADDR);
        !           237:        dp->rep_rule = func << 4 | func;
        !           238:        dp->source_y = sy;
        !           239:        dp->source_x = sx;
        !           240:        dp->dest_y   = dy;
        !           241:        dp->dest_x   = dx;
        !           242:        dp->wheight  = h;
        !           243:        dp->wwidth   = w;
        !           244:        dp->wmove    = 1;
        !           245: }
        !           246: #endif

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