384 lines
9.7 KiB
C
384 lines
9.7 KiB
C
/* $NetBSD: pm.c,v 1.31 2000/01/09 03:55:37 simonb Exp $ */
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/*-
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* Copyright (c) 1992, 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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* Ralph Campbell and Rick Macklem.
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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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* @(#)pm.c 8.1 (Berkeley) 6/10/93
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*/
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/*
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* devGraphics.c --
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*
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* This file contains machine-dependent routines for the graphics device.
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*
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* Copyright (C) 1989 Digital Equipment Corporation.
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appears in all copies.
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* Digital Equipment Corporation makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* from: Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
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* v 9.2 90/02/13 22:16:24 shirriff Exp SPRITE (DECWRL)";
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: pm.c,v 1.31 2000/01/09 03:55:37 simonb Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/file.h>
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#include <sys/errno.h>
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#include <sys/systm.h>
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#include <vm/vm.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h> /* XXX wbflush() */
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#include <machine/pmioctl.h>
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#include <machine/fbio.h>
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#include <machine/fbvar.h>
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#include <pmax/dev/fbreg.h>
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#include <pmax/dev/pmvar.h>
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#include <pmax/dev/pmreg.h>
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#include <pmax/dev/bt478var.h>
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/*
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* These need to be mapped into user space.
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*/
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struct fbuaccess pmu;
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static u_short curReg; /* copy of PCCRegs.cmdr since it's read only */
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/*
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* rcons methods and globals.
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*/
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struct pmax_fbtty pmfb;
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/*
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* Forward references.
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*/
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static void pmInitColorMap __P((struct fbinfo *fi));
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static void pmLoadCursor __P((struct fbinfo *fi, u_short *ptr));
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static void pmPosCursor __P((struct fbinfo *fi, int x, int y));
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#if 0 /* XXX not used */
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static void pccCursorOn __P((struct fbinfo *fi));
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#endif
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static void pccCursorOff __P((struct fbinfo *fi));
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static int pm_video_on __P((struct fbinfo *));
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static int pm_video_off __P((struct fbinfo *));
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/* new-style raster-cons "driver" methods */
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struct fbdriver pm_driver = {
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pm_video_on,
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pm_video_off,
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pmInitColorMap, /* pcc cursor wrapper for bt478InitColorMap */
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bt478GetColorMap,
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bt478LoadColorMap,
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pmPosCursor,
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pmLoadCursor,
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bt478CursorColor,
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};
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/*
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* Machine-independent backend to attach a pm device.
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* assumes the following fields in struct fbinfo *fi have been set
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* by the MD front-end:
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*
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* fi->fi_pixels framebuffer raster memory
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* fi->fi_vdac vdac register address
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* fi->fi_base address of programmable cursor chip registers
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* fi->fi_type.fb_depth 1 (mono) or 8 (colour)
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* fi->fi_fbu QVSS-compatible user-mapped fbinfo struct
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*/
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int
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pmattach(fi, unit, cold_console_flag)
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struct fbinfo *fi;
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int unit;
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int cold_console_flag;
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{
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PCCRegs *pcc = (PCCRegs *)fi->fi_base;
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/* check for no frame buffer */
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if (badaddr((char *)fi->fi_pixels, 4))
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return (0);
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/* Fill in the stuff that differs from monochrome to color. */
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if (fi->fi_type.fb_depth == 1) {
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fi->fi_type.fb_depth = 1;
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fi->fi_type.fb_cmsize = 0;
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fi->fi_type.fb_boardtype = PMAX_FBTYPE_PM_MONO;
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fi->fi_type.fb_size = 0x40000;
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fi->fi_linebytes = 256;
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} else {
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fi->fi_type.fb_depth = 8;
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fi->fi_type.fb_cmsize = 256;
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fi->fi_type.fb_boardtype = PMAX_FBTYPE_PM_COLOR;
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fi->fi_type.fb_size = 0x100000;
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fi->fi_linebytes = 1024;
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}
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/* Fill in main frame buffer info struct. */
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fi->fi_driver = &pm_driver;
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fi->fi_pixelsize =
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((fi->fi_type.fb_depth == 1) ? 1024 / 8 : 1024) * 864;
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fi->fi_blanked = 0;
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fi->fi_type.fb_width = 1024;
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fi->fi_type.fb_height = 864;
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/*
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* Compatibility glue
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*/
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fi->fi_glasstty = &pmfb;
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/*
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* Initialize the screen.
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*/
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pcc->cmdr = PCC_FOPB | PCC_VBHI;
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/* Initialize the cursor register on . */
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/* Turn off the hardware cursor sprite for rcons text mode. */
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curReg = 0; /* XXX */
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pccCursorOff(fi);
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/*
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* Initialize the color map, the screen, and the mouse.
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*/
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bt478init(fi);
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/*
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* Initialize old-style pmax screen info.
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*/
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fi->fi_fbu->scrInfo.max_row = 56;
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fi->fi_fbu->scrInfo.max_col = 80;
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init_pmaxfbu(fi);
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/* These are non-zero on the kn01 framebuffer. Why? */
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fi->fi_fbu->scrInfo.min_cur_x = -15;
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fi->fi_fbu->scrInfo.min_cur_y = -15;
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#ifdef notanymore
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bt478InitColorMap(fi); /* done inside bt478init() */
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#endif
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/*
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* Connect to the raster-console pseudo-driver.
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*/
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fi->fi_glasstty = &pmfb; /*XXX*/
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fbconnect((fi->fi_type.fb_depth == 1) ? "KN01 mfb" : "KN01 cfb",
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fi, cold_console_flag);
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#ifdef fpinitialized
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fp->initialized = 1;
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#endif
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return (1);
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}
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/*
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* ----------------------------------------------------------------------------
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*
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* pmLoadCursor --
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*
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* Routine to load the cursor Sprite pattern.
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*
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* Results:
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* None.
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*
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* Side effects:
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* The cursor is loaded into the hardware cursor.
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* Also, turn on the cursor in case it was disabled before.
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* If someone sets a cursor pattern, it should probably be displayed.
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*
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* ----------------------------------------------------------------------------
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*/
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static void
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pmLoadCursor(fi, cur)
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struct fbinfo *fi;
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unsigned short *cur;
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{
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PCCRegs *pcc = (PCCRegs *)fi->fi_base;
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int i;
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curReg |= PCC_LODSA;
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pcc->cmdr = curReg;
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for (i = 0; i < 32; i++) {
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pcc->memory = cur[i];
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wbflush();
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}
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curReg &= ~PCC_LODSA;
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/* turn on the cursor plane overlays in the PCC chip. */
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curReg |= (PCC_ENPA | PCC_ENPB);
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pcc->cmdr = curReg;
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}
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/*
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*----------------------------------------------------------------------
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*
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* pmPosCursor --
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*
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* Postion the cursor.
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*
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* Results:
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* None.
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*
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* Side effects:
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* None.
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* NB: should not turn on the hardwar cursor, since the
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* Xserver positions the cursor to upper left corner as the last
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* cursor operation before it exits.
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*
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*----------------------------------------------------------------------
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*/
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void
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pmPosCursor(fi, x, y)
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struct fbinfo *fi;
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int x, y;
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{
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PCCRegs *pcc = (PCCRegs *)fi->fi_base;
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if (y < fi->fi_fbu->scrInfo.min_cur_y ||
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y > fi->fi_fbu->scrInfo.max_cur_y)
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y = fi->fi_fbu->scrInfo.max_cur_y;
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if (x < fi->fi_fbu->scrInfo.min_cur_x ||
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x > fi->fi_fbu->scrInfo.max_cur_x)
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x = fi->fi_fbu->scrInfo.max_cur_x;
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fi->fi_fbu->scrInfo.cursor.x = x; /* keep track of real cursor */
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fi->fi_fbu->scrInfo.cursor.y = y; /* position, indep. of mouse */
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pcc->xpos = PCC_X_OFFSET + x;
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pcc->ypos = PCC_Y_OFFSET + y;
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}
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#if 0 /* XXX not used */
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/*
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* Turn hardware cursor on by turning on the enable for A and B
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* overlay planes. video output under the cursor sprite is then
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* determined by the A and B plane contents.
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*/
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void pccCursorOn(fi)
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struct fbinfo *fi;
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{
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PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
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pcc -> cmdr = curReg | (PCC_ENPA | PCC_ENPB);
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wbflush();
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}
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#endif
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/*
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* Turn hardware cursor off by turning off the enable for A and B
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* overlay planes. video output under the cursor sprite is then
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* determined by the framebuffer contents.
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*/
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void pccCursorOff(fi)
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struct fbinfo *fi;
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{
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PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
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pcc -> cmdr = curReg & ~(PCC_ENPA | PCC_ENPB);
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wbflush();
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}
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/*
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* Initialize colourmap to default values.
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* The default cursor hardware state is off.
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*/
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void pmInitColorMap(fi)
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struct fbinfo *fi;
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{
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bt478InitColorMap(fi);
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pccCursorOff(fi);
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}
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/*
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* Enable the video display.
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*/
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static int
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pm_video_on (fi)
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struct fbinfo *fi;
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{
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PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
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if (!fi -> fi_blanked)
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return 0;
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pcc -> cmdr = curReg & ~(PCC_FOPA | PCC_FOPB);
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bt478RestoreCursorColor (fi);
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fi -> fi_blanked = 0;
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return 0;
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}
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/*
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* Disable the video display.
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* Sets the FOPA and FOPB bits in the PCC chip to force the contents
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* of the A and B overlay planes to 1. Video output is then
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* determined by colourmap entry 12 (0x0c), which we set here to
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* black.
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*/
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static int pm_video_off (fi)
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struct fbinfo *fi;
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{
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PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
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if (fi -> fi_blanked)
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return 0;
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bt478BlankCursor (fi);
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pcc -> cmdr = curReg | PCC_FOPA | PCC_FOPB;
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fi -> fi_blanked = 1;
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return 0;
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}
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