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NetBSD/sys/arch/pmax/dev/mfb.c

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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)mfb.c 8.1 (Berkeley) 6/10/93
* $Id: mfb.c,v 1.3 1994/05/27 08:59:01 glass Exp $
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* devGraphics.c --
*
* This file contains machine-dependent routines for the graphics device.
*
* Copyright (C) 1989 Digital Equipment Corporation.
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies.
* Digital Equipment Corporation makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* from: Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
* v 9.2 90/02/13 22:16:24 shirriff Exp SPRITE (DECWRL)";
*/
#include <mfb.h>
#if NMFB > 0
#include <sys/param.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/errno.h>
#include <sys/proc.h>
#include <sys/mman.h>
#include <vm/vm.h>
#include <machine/machConst.h>
#include <machine/pmioctl.h>
#include <pmax/pmax/cons.h>
#include <pmax/pmax/pmaxtype.h>
#include <pmax/dev/device.h>
#include <pmax/dev/mfbreg.h>
#include <pmax/dev/fbreg.h>
#include <dc.h>
#include <dtop.h>
#include <scc.h>
/*
* These need to be mapped into user space.
*/
struct fbuaccess mfbu;
struct pmax_fb mfbfb;
/*
* Forward references.
*/
static void mfbScreenInit();
static void mfbLoadCursor();
static void mfbRestoreCursorColor();
static void mfbCursorColor();
void mfbPosCursor();
static void mfbInitColorMap();
static void mfbLoadColorMap();
static void mfbConfigMouse(), mfbDeconfigMouse();
static void bt455_video_on(), bt455_video_off(), bt431_select_reg();
static void bt431_write_reg(), bt431_init();
static u_char bt431_read_reg();
void mfbKbdEvent(), mfbMouseEvent(), mfbMouseButtons();
#if NDC > 0
extern void (*dcDivertXInput)();
extern void (*dcMouseEvent)();
extern void (*dcMouseButtons)();
#endif
#if NSCC > 0
extern void (*sccDivertXInput)();
extern void (*sccMouseEvent)();
extern void (*sccMouseButtons)();
#endif
#if NDTOP > 0
extern void (*dtopDivertXInput)();
extern void (*dtopMouseEvent)();
extern void (*dtopMouseButtons)();
#endif
extern int pmax_boardtype;
extern u_short defCursor[32];
extern struct consdev cn_tab;
int mfbprobe();
struct driver mfbdriver = {
"mfb", mfbprobe, 0, 0,
};
#define MFB_OFFSET_VRAM 0x200000 /* from module's base */
#define MFB_OFFSET_BT431 0x180000 /* Bt431 registers */
#define MFB_OFFSET_BT455 0x100000 /* Bt455 registers */
#define MFB_OFFSET_IREQ 0x080000 /* Interrupt req. control */
#define MFB_OFFSET_ROM 0x0 /* Diagnostic ROM */
#define MFB_FB_SIZE 0x200000 /* frame buffer size */
/*
* Test to see if device is present.
* Return true if found and initialized ok.
*/
/*ARGSUSED*/
mfbprobe(cp)
register struct pmax_ctlr *cp;
{
register struct pmax_fb *fp = &mfbfb;
if (!fp->initialized && !mfbinit(cp->pmax_addr))
return (0);
printf("mfb0 (mono display)\n");
return (1);
}
/*ARGSUSED*/
mfbopen(dev, flag)
dev_t dev;
int flag;
{
register struct pmax_fb *fp = &mfbfb;
int s;
if (!fp->initialized)
return (ENXIO);
if (fp->GraphicsOpen)
return (EBUSY);
fp->GraphicsOpen = 1;
mfbInitColorMap(1);
/*
* Set up event queue for later
*/
fp->fbu->scrInfo.qe.eSize = PM_MAXEVQ;
fp->fbu->scrInfo.qe.eHead = fp->fbu->scrInfo.qe.eTail = 0;
fp->fbu->scrInfo.qe.tcSize = MOTION_BUFFER_SIZE;
fp->fbu->scrInfo.qe.tcNext = 0;
fp->fbu->scrInfo.qe.timestamp_ms = TO_MS(time);
mfbConfigMouse();
return (0);
}
/*ARGSUSED*/
mfbclose(dev, flag)
dev_t dev;
int flag;
{
register struct pmax_fb *fp = &mfbfb;
int s;
if (!fp->GraphicsOpen)
return (EBADF);
fp->GraphicsOpen = 0;
mfbInitColorMap(0);
mfbDeconfigMouse();
mfbScreenInit();
bzero((caddr_t)fp->fr_addr, 2048 * 1024);
mfbPosCursor(fp->col * 8, fp->row * 15);
return (0);
}
/*ARGSUSED*/
mfbioctl(dev, cmd, data, flag, p)
dev_t dev;
caddr_t data;
struct proc *p;
{
register struct pmax_fb *fp = &mfbfb;
int s;
switch (cmd) {
case QIOCGINFO:
return (fbmmap(fp, dev, data, p));
case QIOCPMSTATE:
/*
* Set mouse state.
*/
fp->fbu->scrInfo.mouse = *(pmCursor *)data;
mfbPosCursor(fp->fbu->scrInfo.mouse.x, fp->fbu->scrInfo.mouse.y);
break;
case QIOCINIT:
/*
* Initialize the screen.
*/
mfbScreenInit();
break;
case QIOCKPCMD:
{
pmKpCmd *kpCmdPtr;
unsigned char *cp;
kpCmdPtr = (pmKpCmd *)data;
if (kpCmdPtr->nbytes == 0)
kpCmdPtr->cmd |= 0x80;
if (!fp->GraphicsOpen)
kpCmdPtr->cmd |= 1;
(*fp->KBDPutc)(fp->kbddev, (int)kpCmdPtr->cmd);
cp = &kpCmdPtr->par[0];
for (; kpCmdPtr->nbytes > 0; cp++, kpCmdPtr->nbytes--) {
if (kpCmdPtr->nbytes == 1)
*cp |= 0x80;
(*fp->KBDPutc)(fp->kbddev, (int)*cp);
}
break;
}
case QIOCADDR:
*(PM_Info **)data = &fp->fbu->scrInfo;
break;
case QIOWCURSOR:
mfbLoadCursor((unsigned short *)data);
break;
case QIOWCURSORCOLOR:
mfbCursorColor((unsigned int *)data);
break;
case QIOSETCMAP:
#ifdef notdef
mfbLoadColorMap((ColorMap *)data);
#endif
break;
case QIOKERNLOOP:
mfbConfigMouse();
break;
case QIOKERNUNLOOP:
mfbDeconfigMouse();
break;
case QIOVIDEOON:
bt455_video_on();
break;
case QIOVIDEOOFF:
bt455_video_off();
break;
default:
printf("mfb0: Unknown ioctl command %x\n", cmd);
return (EINVAL);
}
return (0);
}
/*
* Return the physical page number that corresponds to byte offset 'off'.
*/
/*ARGSUSED*/
mfbmap(dev, off, prot)
dev_t dev;
{
int len;
len = pmax_round_page(((vm_offset_t)&mfbu & PGOFSET) + sizeof(mfbu));
if (off < len)
return pmax_btop(MACH_CACHED_TO_PHYS(&mfbu) + off);
off -= len;
if (off >= mfbfb.fr_size)
return (-1);
return pmax_btop(MACH_UNCACHED_TO_PHYS(mfbfb.fr_addr) + off);
}
mfbselect(dev, flag, p)
dev_t dev;
int flag;
struct proc *p;
{
struct pmax_fb *fp = &mfbfb;
switch (flag) {
case FREAD:
if (fp->fbu->scrInfo.qe.eHead != fp->fbu->scrInfo.qe.eTail)
return (1);
selrecord(p, &fp->selp);
break;
}
return (0);
}
static u_char cursor_RGB[6]; /* cursor color 2 & 3 */
/*
* There are actually 2 Bt431 cursor sprite chips that each generate 1 bit
* of each cursor pixel for a 2bit 64x64 cursor sprite. The corresponding
* registers for these two chips live in adjacent bytes of the shorts that
* are defined in bt431_regmap_t.
*/
static void
mfbLoadCursor(cursor)
u_short *cursor;
{
register int i, j, k, pos;
register u_short ap, bp, out;
register bt431_regmap_t *regs;
regs = (bt431_regmap_t *)(mfbfb.fr_chipaddr +
MFB_OFFSET_BT431);
/*
* Fill in the cursor sprite using the A and B planes, as provided
* for the pmax.
* XXX This will have to change when the X server knows that this
* is not a pmax display. (ie. Not the Xcfbpmax server.)
*/
pos = 0;
bt431_select_reg(regs, BT431_REG_CRAM_BASE);
for (k = 0; k < 16; k++) {
ap = *cursor;
bp = *(cursor + 16);
j = 0;
while (j < 2) {
out = 0;
for (i = 0; i < 8; i++) {
out = (out << 1) | ((bp & 0x1) << 8) |
(ap & 0x1);
ap >>= 1;
bp >>= 1;
}
BT431_WRITE_CMAP_AUTOI(regs, out);
pos++;
j++;
}
while (j < 8) {
BT431_WRITE_CMAP_AUTOI(regs, 0);
pos++;
j++;
}
cursor++;
}
while (pos < 512) {
BT431_WRITE_CMAP_AUTOI(regs, 0);
pos++;
}
}
/*
* Initialization
*/
int
mfbinit(cp)
char *cp;
{
register struct pmax_fb *fp = &mfbfb;
/* check for no frame buffer */
if (badaddr(cp, 4))
return (0);
fp->isMono = 0;
fp->fr_addr = cp + MFB_OFFSET_VRAM;
fp->fr_chipaddr = cp;
fp->fr_size = MFB_FB_SIZE;
/*
* Must be in Uncached space since the fbuaccess structure is
* mapped into the user's address space uncached.
*/
fp->fbu = (struct fbuaccess *)
MACH_PHYS_TO_UNCACHED(MACH_CACHED_TO_PHYS(&mfbu));
fp->posCursor = mfbPosCursor;
if (tb_kbdmouseconfig(fp))
return (0);
/*
* Initialize the screen.
*/
bt431_init(fp->fr_chipaddr + MFB_OFFSET_BT431);
/*
* Initialize screen info.
*/
fp->fbu->scrInfo.max_row = 67;
fp->fbu->scrInfo.max_col = 80;
fp->fbu->scrInfo.max_x = 1280;
fp->fbu->scrInfo.max_y = 1024;
fp->fbu->scrInfo.max_cur_x = 1279;
fp->fbu->scrInfo.max_cur_y = 1023;
fp->fbu->scrInfo.version = 11;
fp->fbu->scrInfo.mthreshold = 4;
fp->fbu->scrInfo.mscale = 2;
fp->fbu->scrInfo.min_cur_x = 0;
fp->fbu->scrInfo.min_cur_y = 0;
fp->fbu->scrInfo.qe.timestamp_ms = TO_MS(time);
fp->fbu->scrInfo.qe.eSize = PM_MAXEVQ;
fp->fbu->scrInfo.qe.eHead = fp->fbu->scrInfo.qe.eTail = 0;
fp->fbu->scrInfo.qe.tcSize = MOTION_BUFFER_SIZE;
fp->fbu->scrInfo.qe.tcNext = 0;
/*
* Initialize the color map, the screen, and the mouse.
*/
mfbInitColorMap(0);
mfbScreenInit();
fbScroll(fp);
fp->initialized = 1;
if (cn_tab.cn_fb == (struct pmax_fb *)0)
cn_tab.cn_fb = fp;
return (1);
}
/*
* ----------------------------------------------------------------------------
*
* mfbScreenInit --
*
* Initialize the screen.
*
* Results:
* None.
*
* Side effects:
* The screen is initialized.
*
* ----------------------------------------------------------------------------
*/
static void
mfbScreenInit()
{
register struct pmax_fb *fp = &mfbfb;
/*
* Home the cursor.
* We want an LSI terminal emulation. We want the graphics
* terminal to scroll from the bottom. So start at the bottom.
*/
fp->row = 66;
fp->col = 0;
/*
* Load the cursor with the default values
*
*/
mfbLoadCursor(defCursor);
}
/*
* ----------------------------------------------------------------------------
*
* RestoreCursorColor --
*
* Routine to restore the color of the cursor.
*
* Results:
* None.
*
* Side effects:
* None.
*
* ----------------------------------------------------------------------------
*/
static void
mfbRestoreCursorColor()
{
bt455_regmap_t *regs = (bt455_regmap_t *)(mfbfb.fr_chipaddr +
MFB_OFFSET_BT455);
ColorMap cm;
u_char fg;
if (cursor_RGB[0] || cursor_RGB[1] || cursor_RGB[2])
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0xffff;
else
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0;
cm.index = 8;
mfbLoadColorMap(&cm);
cm.index = 9;
mfbLoadColorMap(&cm);
if (cursor_RGB[3] || cursor_RGB[4] || cursor_RGB[5])
fg = 0xf;
else
fg = 0;
regs->addr_ovly = fg;
MachEmptyWriteBuffer();
regs->addr_ovly = fg;
MachEmptyWriteBuffer();
regs->addr_ovly = fg;
MachEmptyWriteBuffer();
}
/*
* ----------------------------------------------------------------------------
*
* CursorColor --
*
* Set the color of the cursor.
*
* Results:
* None.
*
* Side effects:
* None.
*
* ----------------------------------------------------------------------------
*/
static void
mfbCursorColor(color)
unsigned int color[];
{
register int i, j;
for (i = 0; i < 6; i++)
cursor_RGB[i] = (u_char)(color[i] >> 8);
mfbRestoreCursorColor();
}
/*
*----------------------------------------------------------------------
*
* PosCursor --
*
* Postion the cursor.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
mfbPosCursor(x, y)
register int x, y;
{
bt431_regmap_t *regs = (bt431_regmap_t *)(mfbfb.fr_chipaddr +
MFB_OFFSET_BT431);
register struct pmax_fb *fp = &mfbfb;
if (y < fp->fbu->scrInfo.min_cur_y || y > fp->fbu->scrInfo.max_cur_y)
y = fp->fbu->scrInfo.max_cur_y;
if (x < fp->fbu->scrInfo.min_cur_x || x > fp->fbu->scrInfo.max_cur_x)
x = fp->fbu->scrInfo.max_cur_x;
fp->fbu->scrInfo.cursor.x = x; /* keep track of real cursor */
fp->fbu->scrInfo.cursor.y = y; /* position, indep. of mouse */
#define lo(v) ((v)&0xff)
#define hi(v) (((v)&0xf00)>>8)
/*
* Cx = x + D + H - P
* P = 37 if 1:1, 52 if 4:1, 57 if 5:1
* D = pixel skew between outdata and external data
* H = pixels between HSYNCH falling and active video
*
* Cy = y + V - 32
* V = scanlines between HSYNCH falling, two or more
* clocks after VSYNCH falling, and active video
*/
bt431_write_reg(regs, BT431_REG_CXLO, lo(x + 360));
BT431_WRITE_REG_AUTOI(regs, hi(x + 360));
BT431_WRITE_REG_AUTOI(regs, lo(y + 36));
BT431_WRITE_REG_AUTOI(regs, hi(y + 36));
}
/*
* ----------------------------------------------------------------------------
*
* InitColorMap --
*
* Initialize the color map.
*
* Results:
* None.
*
* Side effects:
* The colormap is initialized appropriately.
*
* ----------------------------------------------------------------------------
*/
static void
mfbInitColorMap(blackpix)
int blackpix;
{
ColorMap cm;
register int i;
cm.index = 0;
if (blackpix)
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0xffff;
else
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0;
mfbLoadColorMap(&cm);
if (blackpix)
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0;
else
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0xffff;
for (i = 1; i < 16; i++) {
cm.index = i;
mfbLoadColorMap(&cm);
}
for (i = 0; i < 3; i++) {
cursor_RGB[i] = 0;
cursor_RGB[i + 3] = 0xff;
}
mfbRestoreCursorColor();
}
/*
* ----------------------------------------------------------------------------
*
* LoadColorMap --
*
* Load the color map.
*
* Results:
* None.
*
* Side effects:
* The color map is loaded.
*
* ----------------------------------------------------------------------------
*/
static void
mfbLoadColorMap(ptr)
ColorMap *ptr;
{
bt455_regmap_t *regs = (bt455_regmap_t *)(mfbfb.fr_chipaddr +
MFB_OFFSET_BT455);
if (ptr->index > 15)
return;
BT455_SELECT_ENTRY(regs, ptr->index);
regs->addr_cmap_data = ptr->Entry.red >> 12;
MachEmptyWriteBuffer();
regs->addr_cmap_data = ptr->Entry.green >> 12;
MachEmptyWriteBuffer();
regs->addr_cmap_data = ptr->Entry.blue >> 12;
MachEmptyWriteBuffer();
}
/*
* Video on/off state.
*/
static struct vstate {
u_char color0[6]; /* saved color map entry zero */
u_char off; /* TRUE if display is off */
u_char cursor[6]; /* saved cursor color */
} vstate;
/*
* ----------------------------------------------------------------------------
*
* bt455_video_on
*
* Enable the video display.
*
* Results:
* None.
*
* Side effects:
* The display is enabled.
*
* ----------------------------------------------------------------------------
*/
static void
bt455_video_on()
{
register int i;
bt455_regmap_t *regs = (bt455_regmap_t *)(mfbfb.fr_chipaddr +
MFB_OFFSET_BT455);
if (!vstate.off)
return;
/* restore old color map entry zero */
BT455_SELECT_ENTRY(regs, 0);
for (i = 0; i < 6; i++) {
regs->addr_cmap_data = vstate.color0[i];
MachEmptyWriteBuffer();
cursor_RGB[i] = vstate.cursor[i];
}
mfbRestoreCursorColor();
vstate.off = 0;
}
/*
* ----------------------------------------------------------------------------
*
* bt455_video_off
*
* Disable the video display.
*
* Results:
* None.
*
* Side effects:
* The display is disabled.
*
* ----------------------------------------------------------------------------
*/
static void
bt455_video_off()
{
register int i;
bt455_regmap_t *regs = (bt455_regmap_t *)(mfbfb.fr_chipaddr +
MFB_OFFSET_BT455);
ColorMap cm;
if (vstate.off)
return;
/* save old color map entry zero */
BT455_SELECT_ENTRY(regs, 0);
for (i = 0; i < 6; i++) {
vstate.color0[i] = regs->addr_cmap_data;
vstate.cursor[i] = cursor_RGB[i];
cursor_RGB[i] = 0;
}
/* set color map entry zero to zero */
cm.index = 0;
cm.Entry.red = cm.Entry.green = cm.Entry.blue = 0;
mfbLoadColorMap(&cm);
cm.index = 1;
mfbLoadColorMap(&cm);
mfbRestoreCursorColor();
vstate.off = 1;
}
/*
* mfb keyboard and mouse input. Just punt to the generic ones in fb.c
*/
void
mfbKbdEvent(ch)
int ch;
{
fbKbdEvent(ch, &mfbfb);
}
void
mfbMouseEvent(newRepPtr)
MouseReport *newRepPtr;
{
fbMouseEvent(newRepPtr, &mfbfb);
}
void
mfbMouseButtons(newRepPtr)
MouseReport *newRepPtr;
{
fbMouseButtons(newRepPtr, &mfbfb);
}
/*
* Configure the mouse and keyboard based on machine type
*/
static void
mfbConfigMouse()
{
int s;
s = spltty();
switch (pmax_boardtype) {
#if NDC > 0
case DS_3MAX:
dcDivertXInput = mfbKbdEvent;
dcMouseEvent = mfbMouseEvent;
dcMouseButtons = mfbMouseButtons;
break;
#endif
#if NSCC > 1
case DS_3MIN:
sccDivertXInput = mfbKbdEvent;
sccMouseEvent = mfbMouseEvent;
sccMouseButtons = mfbMouseButtons;
break;
#endif
#if NDTOP > 0
case DS_MAXINE:
dtopDivertXInput = mfbKbdEvent;
dtopMouseEvent = mfbMouseEvent;
dtopMouseButtons = mfbMouseButtons;
break;
#endif
default:
printf("Can't configure mouse/keyboard\n");
};
splx(s);
}
/*
* and deconfigure them
*/
static void
mfbDeconfigMouse()
{
int s;
s = spltty();
switch (pmax_boardtype) {
#if NDC > 0
case DS_3MAX:
dcDivertXInput = (void (*)())0;
dcMouseEvent = (void (*)())0;
dcMouseButtons = (void (*)())0;
break;
#endif
#if NSCC > 1
case DS_3MIN:
sccDivertXInput = (void (*)())0;
sccMouseEvent = (void (*)())0;
sccMouseButtons = (void (*)())0;
break;
#endif
#if NDTOP > 0
case DS_MAXINE:
dtopDivertXInput = (void (*)())0;
dtopMouseEvent = (void (*)())0;
dtopMouseButtons = (void (*)())0;
break;
#endif
default:
printf("Can't deconfigure mouse/keyboard\n");
};
}
/*
* Generic register access
*/
static void
bt431_select_reg(regs, regno)
bt431_regmap_t *regs;
{
regs->addr_lo = SET_VALUE(regno & 0xff);
regs->addr_hi = SET_VALUE((regno >> 8) & 0xff);
MachEmptyWriteBuffer();
}
static void
bt431_write_reg(regs, regno, val)
bt431_regmap_t *regs;
{
bt431_select_reg(regs, regno);
regs->addr_reg = SET_VALUE(val);
MachEmptyWriteBuffer();
}
static u_char
bt431_read_reg(regs, regno)
bt431_regmap_t *regs;
{
bt431_select_reg(regs, regno);
return (GET_VALUE(regs->addr_reg));
}
static void
bt431_init(regs)
bt431_regmap_t *regs;
{
register int i;
/* use 4:1 input mux */
bt431_write_reg(regs, BT431_REG_CMD,
BT431_CMD_CURS_ENABLE|BT431_CMD_OR_CURSORS|
BT431_CMD_4_1_MUX|BT431_CMD_THICK_1);
/* home cursor */
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
/* no crosshair window */
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
BT431_WRITE_REG_AUTOI(regs, 0x00);
}
#endif /* NMFB */
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