152 lines
4.4 KiB
C
152 lines
4.4 KiB
C
/*
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* Copyright (c) 1991 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: grf_machdep.c 1.1 92/01/21
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*
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* from: @(#)grf_machdep.c 8.2 (Berkeley) 1/12/94
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* $Id: grf_machdep.c,v 1.1 1994/05/25 11:47:43 mycroft Exp $
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*/
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/*
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* Graphics display driver for the HP300/400 DIO/DIO-II based machines.
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* This is the hardware-dependent configuration portion of the driver.
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*/
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#include "grf.h"
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#if NGRF > 0
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#include <sys/param.h>
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#include <hp300/dev/device.h>
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#include <hp300/dev/grfioctl.h>
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#include <hp300/dev/grfvar.h>
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#include <hp300/dev/grfreg.h>
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int grfprobe();
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struct driver grfdriver = { grfprobe, "grf" };
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/*
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* XXX called from ite console init routine.
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* Does just what configure will do later but without printing anything.
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*/
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grfconfig()
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{
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register caddr_t addr;
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register struct hp_hw *hw;
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register struct hp_device *hd, *nhd;
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for (hw = sc_table; hw->hw_type; hw++) {
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if (!HW_ISDEV(hw, D_BITMAP))
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continue;
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/*
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* Found one, now match up with a logical unit number
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*/
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nhd = NULL;
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addr = hw->hw_kva;
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for (hd = hp_dinit; hd->hp_driver; hd++) {
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if (hd->hp_driver != &grfdriver || hd->hp_alive)
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continue;
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/*
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* Wildcarded. If first, remember as possible match.
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*/
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if (hd->hp_addr == NULL) {
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if (nhd == NULL)
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nhd = hd;
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continue;
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}
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/*
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* Not wildcarded.
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* If exact match done searching, else keep looking.
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*/
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if (sctova(hd->hp_addr) == addr) {
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nhd = hd;
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break;
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}
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}
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/*
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* Found a match, initialize
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*/
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if (nhd && grfinit(addr, nhd->hp_unit))
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nhd->hp_addr = addr;
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}
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}
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/*
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* Normal init routine called by configure() code
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*/
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grfprobe(hd)
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struct hp_device *hd;
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{
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struct grf_softc *gp = &grf_softc[hd->hp_unit];
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if ((gp->g_flags & GF_ALIVE) == 0 &&
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!grfinit(hd->hp_addr, hd->hp_unit))
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return(0);
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printf("grf%d: %d x %d ", hd->hp_unit,
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gp->g_display.gd_dwidth, gp->g_display.gd_dheight);
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if (gp->g_display.gd_colors == 2)
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printf("monochrome");
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else
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printf("%d color", gp->g_display.gd_colors);
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printf(" %s display\n", gp->g_sw->gd_desc);
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return(1);
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}
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grfinit(addr, unit)
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caddr_t addr;
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int unit;
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{
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struct grf_softc *gp = &grf_softc[unit];
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register struct grfsw *gsw;
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struct grfreg *gr;
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gr = (struct grfreg *) addr;
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if (gr->gr_id != GRFHWID)
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return(0);
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for (gsw = grfsw; gsw < &grfsw[ngrfsw]; gsw++)
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if (gsw->gd_hwid == gr->gr_id2)
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break;
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if (gsw < &grfsw[ngrfsw] && (*gsw->gd_init)(gp, addr)) {
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gp->g_sw = gsw;
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gp->g_display.gd_id = gsw->gd_swid;
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gp->g_flags = GF_ALIVE;
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return(1);
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}
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return(0);
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}
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#endif
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