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Annotation of 43BSDReno/sys/hpdev/ite_subr.c, revision 1.1.1.1

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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