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Annotation of 43BSDReno/sys/hpdev/grf_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 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 $Hdr: grf_dv.c 1.6 89/04/11$
        !            26:  *
        !            27:  *     @(#)grf_dv.c    7.1 (Berkeley) 5/8/90
        !            28:  */
        !            29: 
        !            30: #include "grf.h"
        !            31: #if NGRF > 0
        !            32: 
        !            33: /*
        !            34:  * Graphics routines for the DaVinci, HP98730/98731 Graphics system.
        !            35:  */
        !            36: #include "param.h"
        !            37: #include "errno.h"
        !            38: 
        !            39: #include "grfioctl.h"
        !            40: #include "grfvar.h"
        !            41: #include "grf_dvreg.h"
        !            42: 
        !            43: #include "machine/cpu.h"
        !            44: 
        !            45: /*
        !            46:  * Initialize hardware.
        !            47:  * Must point g_display at a grfinfo structure describing the hardware.
        !            48:  * Returns 0 if hardware not present, non-zero ow.
        !            49:  */
        !            50: dv_init(gp, addr)
        !            51:        struct grf_softc *gp;
        !            52:        u_char *addr;
        !            53: {
        !            54:        register struct dvboxfb *dbp;
        !            55:        struct grfinfo *gi = &gp->g_display;
        !            56:        int fboff;
        !            57: 
        !            58:        dbp = (struct dvboxfb *) addr;
        !            59:        gi->gd_regaddr = (caddr_t) UNIOV(addr);
        !            60:        gi->gd_regsize = 0x20000;
        !            61:        gi->gd_fbwidth = (dbp->fbwmsb << 8) | dbp->fbwlsb;
        !            62:        gi->gd_fbheight = (dbp->fbhmsb << 8) | dbp->fbhlsb;
        !            63:        fboff = (dbp->fbomsb << 8) | dbp->fbolsb;
        !            64:        gi->gd_fbaddr = (caddr_t) (*(addr + fboff) << 16);
        !            65:        gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight;
        !            66:        gi->gd_dwidth = (dbp->dwmsb << 8) | dbp->dwlsb;
        !            67:        gi->gd_dheight = (dbp->dwmsb << 8) | dbp->dwlsb;
        !            68:        gi->gd_planes = 0;      /* ?? */
        !            69:        gi->gd_colors = 256;
        !            70: 
        !            71:        dv_reset(dbp);
        !            72:        return(1);
        !            73: }
        !            74: 
        !            75: /*
        !            76:  *  Magic code herein.
        !            77:  */
        !            78: dv_reset(dbp)
        !            79:        register struct dvboxfb *dbp;
        !            80: {
        !            81:        dbp->reset = 0x80;
        !            82:        DELAY(100);
        !            83: 
        !            84:        dbp->interrupt = 0x04;
        !            85:        dbp->en_scan   = 0x01;
        !            86:        dbp->fbwen     = ~0;
        !            87:        dbp->opwen     = ~0;
        !            88:        dbp->fold      = 0x01;
        !            89:        dbp->drive     = 0x01;
        !            90:        dbp->rep_rule  = 0x33;
        !            91:        dbp->alt_rr    = 0x33;
        !            92:        dbp->zrr       = 0x33;
        !            93: 
        !            94:        dbp->fbvenp    = 0xFF;
        !            95:        dbp->dispen    = 0x01;
        !            96:        dbp->fbvens    = 0x0;
        !            97:        dbp->fv_trig   = 0x01;
        !            98:        DELAY(100);
        !            99:        dbp->vdrive    = 0x0;
        !           100:        dbp->zconfig   = 0x0;
        !           101: 
        !           102:        while (dbp->wbusy & 0x01)
        !           103:          DELAY(100);
        !           104: 
        !           105:        dbp->cmapbank = 0;
        !           106: 
        !           107:        dbp->red0   = 0;
        !           108:        dbp->red1   = 0;
        !           109:        dbp->green0 = 0;
        !           110:        dbp->green1 = 0;
        !           111:        dbp->blue0  = 0;
        !           112:        dbp->blue1  = 0;
        !           113: 
        !           114:        dbp->panxh   = 0;
        !           115:        dbp->panxl   = 0;
        !           116:        dbp->panyh   = 0;
        !           117:        dbp->panyl   = 0;
        !           118:        dbp->zoom    = 0;
        !           119:        dbp->cdwidth = 0x50;
        !           120:        dbp->chstart = 0x52;
        !           121:        dbp->cvwidth = 0x22;
        !           122:        dbp->pz_trig = 1;
        !           123: }
        !           124: 
        !           125: /*
        !           126:  * Change the mode of the display.
        !           127:  * Right now all we can do is grfon/grfoff.
        !           128:  * Return a UNIX error number or 0 for success.
        !           129:  */
        !           130: dv_mode(gp, cmd)
        !           131:        register struct grf_softc *gp;
        !           132: {
        !           133:        register struct dvboxfb *dbp;
        !           134:        int error = 0;
        !           135: 
        !           136:        dbp = (struct dvboxfb *) IOV(gp->g_display.gd_regaddr);
        !           137:        switch (cmd) {
        !           138:        case GM_GRFON:
        !           139:                dbp->dispen = 0x01;
        !           140:                break;
        !           141:        case GM_GRFOFF:
        !           142:                break;
        !           143:        case GM_GRFOVON:
        !           144:                dbp->opwen = 0xF;
        !           145:                dbp->drive = 0x10;
        !           146:                break;
        !           147:        case GM_GRFOVOFF:
        !           148:                dbp->opwen = 0;
        !           149:                dbp->drive = 0x01;
        !           150:                break;
        !           151:        default:
        !           152:                error = EINVAL;
        !           153:                break;
        !           154:        }
        !           155:        return(error);
        !           156: }
        !           157: 
        !           158: #endif

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