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Annotation of 43BSDReno/sys/hpdev/ite_subr.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 is only permitted until one year after the first shipment
        !            11:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !            12:  * binary forms are permitted provided that: (1) source distributions retain
        !            13:  * this entire copyright notice and comment, and (2) distributions including
        !            14:  * binaries display the following acknowledgement:  This product includes
        !            15:  * software developed by the University of California, Berkeley and its
        !            16:  * contributors'' in the documentation or other materials provided with the
        !            17:  * distribution and in all advertising materials mentioning features or use
        !            18:  * of this software.  Neither the name of the University nor the names of
        !            19:  * its contributors may be used to endorse or promote products derived from
        !            20:  * this software without specific prior written permission.
        !            21:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            22:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            23:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            24:  *
        !            25:  * from: Utah $Hdr: ite_subr.c 1.3 89/04/11$
        !            26:  *
        !            27:  *     @(#)ite_subr.c  7.1 (Berkeley) 5/8/90
        !            28:  */
        !            29: 
        !            30: #include "ite.h"
        !            31: #if NITE > 0
        !            32: 
        !            33: #include "param.h"
        !            34: #include "conf.h"
        !            35: #include "user.h"
        !            36: #include "proc.h"
        !            37: #include "ioctl.h"
        !            38: #include "tty.h"
        !            39: #include "systm.h"
        !            40: #include "uio.h"
        !            41: 
        !            42: #include "itevar.h"
        !            43: #include "itereg.h"
        !            44: 
        !            45: #include "machine/cpu.h"
        !            46: 
        !            47: ite_devinfo(ip)
        !            48:        struct ite_softc *ip;
        !            49: {
        !            50:        struct fontinfo *fi;
        !            51:        struct font *fd;
        !            52: 
        !            53:        fi = (struct fontinfo *) ((*FONTROM << 8 | *(FONTROM + 2)) + REGADDR);
        !            54:        fd = (struct font *) ((fi->haddr << 8 | fi->laddr) + REGADDR);
        !            55: 
        !            56:        ip->ftheight = fd->fh;
        !            57:        ip->ftwidth  = fd->fw;
        !            58:        ip->fbwidth  = ITEREGS->fbwidth_h << 8 | ITEREGS->fbwidth_l;
        !            59:        ip->fbheight = ITEREGS->fbheight_h << 8 | ITEREGS->fbheight_l;
        !            60:        ip->dwidth   = ITEREGS->dispwidth_h << 8 | ITEREGS->dispwidth_l;
        !            61:        ip->dheight  = ITEREGS->dispheight_h << 8 | ITEREGS->dispheight_l;
        !            62:        ip->rows     = ip->dheight / ip->ftheight;
        !            63:        ip->cols     = ip->dwidth / ip->ftwidth;
        !            64: 
        !            65:        if (ip->fbwidth > ip->dwidth) {
        !            66:                /*
        !            67:                 * Stuff goes to right of display.
        !            68:                 */
        !            69:                ip->fontx    = ip->dwidth;
        !            70:                ip->fonty    = 0;
        !            71:                ip->cpl      = (ip->fbwidth - ip->dwidth) / ip->ftwidth;
        !            72:                ip->cblankx  = ip->dwidth;
        !            73:                ip->cblanky  = ip->fonty + ((128 / ip->cpl) +1) * ip->ftheight;
        !            74:        }
        !            75:        else {
        !            76:                /*
        !            77:                 * Stuff goes below the display.
        !            78:                 */
        !            79:                ip->fontx   = 0;
        !            80:                ip->fonty   = ip->dheight;
        !            81:                ip->cpl     = ip->fbwidth / ip->ftwidth;
        !            82:                ip->cblankx = 0;
        !            83:                ip->cblanky = ip->fonty + ((128 / ip->cpl) + 1) * ip->ftheight;
        !            84:        }
        !            85: }
        !            86: 
        !            87: ite_fontinit(ip)
        !            88:        register struct ite_softc *ip;
        !            89: {
        !            90:        struct fontinfo *fi;
        !            91:        struct font *fd;
        !            92:        register u_char *fbmem, *dp;
        !            93:        register int bn;
        !            94:        int c, l, b;
        !            95: 
        !            96:        fi = (struct fontinfo *) ((*FONTROM << 8 | *(FONTROM + 2)) + REGADDR);
        !            97:        fd = (struct font *) ((fi->haddr << 8 | fi->laddr) + REGADDR);
        !            98: 
        !            99:        dp = fd->data;
        !           100: 
        !           101:        for (c = 0; c < 128; c++) {
        !           102:                fbmem = (u_char *) FBBASE +
        !           103:                        (ip->fonty + (c / ip->cpl) * ip->ftheight) *
        !           104:                        ip->fbwidth;
        !           105:                fbmem += ip->fontx + (c % ip->cpl) * ip->ftwidth;
        !           106:                for (l = 0; l < ip->ftheight; l++) {
        !           107:                        bn = 7;
        !           108:                        for (b = 0; b < ip->ftwidth; b++) {
        !           109:                                if ((1 << bn) & *dp)
        !           110:                                        *fbmem++ = 1;
        !           111:                                else
        !           112:                                        *fbmem++ = 0;
        !           113:                                if (--bn < 0) {
        !           114:                                        bn = 7;
        !           115:                                        dp += 2;
        !           116:                                }
        !           117:                        }
        !           118:                        if (bn < 7)
        !           119:                                dp += 2;
        !           120:                        fbmem -= ip->ftwidth;
        !           121:                        fbmem += ip->fbwidth;
        !           122:                }
        !           123:        }
        !           124: 
        !           125: }
        !           126: #endif

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