4.4BSD/usr/src/sys/pmax/dev/xcfb.c
/*-
* 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.
*
* @(#)xcfb.c 8.1 (Berkeley) 6/10/93
*/
/*
* 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 <xcfb.h>
#include <dtop.h>
#if NXCFB > 0
#if NDTOP == 0
xcfb needs dtop device
#else
#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/maxine.h>
#include <pmax/pmax/cons.h>
#include <pmax/pmax/pmaxtype.h>
#include <pmax/dev/device.h>
#include <pmax/dev/xcfbreg.h>
#include <pmax/dev/dtopreg.h>
#include <pmax/dev/fbreg.h>
/*
* These need to be mapped into user space.
*/
struct fbuaccess xcfbu;
struct pmax_fb xcfbfb;
/*
* Forward references.
*/
static void xcfbScreenInit();
static void xcfbLoadCursor();
static void xcfbRestoreCursorColor();
static void xcfbCursorColor();
void xcfbPosCursor();
static void xcfbInitColorMap();
static void xcfbLoadColorMap();
static u_int ims332_read_register();
static void ims332_write_register();
static void ims332_load_colormap_entry();
static void ims332_video_off();
static void ims332_video_on();
void xcfbKbdEvent(), xcfbMouseEvent(), xcfbMouseButtons();
extern void dtopKBDPutc();
extern void (*dtopDivertXInput)();
extern void (*dtopMouseEvent)();
extern void (*dtopMouseButtons)();
extern int pmax_boardtype;
extern u_short defCursor[32];
extern struct consdev cn_tab;
int xcfbprobe();
struct driver xcfbdriver = {
"xcfb", xcfbprobe, 0, 0,
};
/*
* Test to see if device is present.
* Return true if found and initialized ok.
*/
/*ARGSUSED*/
xcfbprobe(cp)
register struct pmax_ctlr *cp;
{
register struct pmax_fb *fp = &xcfbfb;
if (pmax_boardtype != DS_MAXINE)
return (0);
if (!fp->initialized && !xcfbinit())
return (0);
printf("xcfb0 (color display)\n");
return (1);
}
/*ARGSUSED*/
xcfbopen(dev, flag)
dev_t dev;
int flag;
{
register struct pmax_fb *fp = &xcfbfb;
int s;
if (!fp->initialized)
return (ENXIO);
if (fp->GraphicsOpen)
return (EBUSY);
fp->GraphicsOpen = 1;
xcfbInitColorMap();
/*
* 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);
s = spltty();
dtopDivertXInput = xcfbKbdEvent;
dtopMouseEvent = xcfbMouseEvent;
dtopMouseButtons = xcfbMouseButtons;
splx(s);
return (0);
}
/*ARGSUSED*/
xcfbclose(dev, flag)
dev_t dev;
int flag;
{
register struct pmax_fb *fp = &xcfbfb;
int s;
if (!fp->GraphicsOpen)
return (EBADF);
fp->GraphicsOpen = 0;
xcfbInitColorMap();
s = spltty();
dtopDivertXInput = (void (*)())0;
dtopMouseEvent = (void (*)())0;
dtopMouseButtons = (void (*)())0;
splx(s);
xcfbScreenInit();
bzero((caddr_t)fp->fr_addr, 1024 * 768);
xcfbPosCursor(fp->col * 8, fp->row * 15);
return (0);
}
/*ARGSUSED*/
xcfbioctl(dev, cmd, data, flag, p)
dev_t dev;
caddr_t data;
struct proc *p;
{
register struct pmax_fb *fp = &xcfbfb;
int s;
switch (cmd) {
case QIOCGINFO:
return (fbmmap(fp, dev, data, p));
case QIOCPMSTATE:
/*
* Set mouse state.
*/
fp->fbu->scrInfo.mouse = *(pmCursor *)data;
xcfbPosCursor(fp->fbu->scrInfo.mouse.x, fp->fbu->scrInfo.mouse.y);
break;
case QIOCINIT:
/*
* Initialize the screen.
*/
xcfbScreenInit();
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:
xcfbLoadCursor((unsigned short *)data);
break;
case QIOWCURSORCOLOR:
xcfbCursorColor((unsigned int *)data);
break;
case QIOSETCMAP:
xcfbLoadColorMap((ColorMap *)data);
break;
case QIOKERNLOOP:
s = spltty();
dtopDivertXInput = xcfbKbdEvent;
dtopMouseEvent = xcfbMouseEvent;
dtopMouseButtons = xcfbMouseButtons;
splx(s);
break;
case QIOKERNUNLOOP:
s = spltty();
dtopDivertXInput = (void (*)())0;
dtopMouseEvent = (void (*)())0;
dtopMouseButtons = (void (*)())0;
splx(s);
break;
case QIOVIDEOON:
xcfbRestoreCursorColor();
ims332_video_on();
break;
case QIOVIDEOOFF:
ims332_video_off();
break;
default:
printf("xcfb0: Unknown ioctl command %x\n", cmd);
return (EINVAL);
}
return (0);
}
/*
* Return the physical page number that corresponds to byte offset 'off'.
*/
/*ARGSUSED*/
xcfbmap(dev, off, prot)
dev_t dev;
{
int len;
len = pmax_round_page(((vm_offset_t)&xcfbu & PGOFSET) + sizeof(xcfbu));
if (off < len)
return pmax_btop(MACH_CACHED_TO_PHYS(&xcfbu) + off);
off -= len;
if (off >= xcfbfb.fr_size)
return (-1);
return pmax_btop(MACH_UNCACHED_TO_PHYS(xcfbfb.fr_addr) + off);
}
xcfbselect(dev, flag, p)
dev_t dev;
int flag;
struct proc *p;
{
struct pmax_fb *fp = &xcfbfb;
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 */
/*
* Routines for the Inmos IMS-G332 Colour video controller
* Author: Alessandro Forin, Carnegie Mellon University
*/
static u_int
ims332_read_register(regno)
{
register u_char *regs = (u_char *)IMS332_ADDRESS;
unsigned char *rptr;
register u_int val, v1;
/* spec sez: */
rptr = regs + 0x80000 + (regno << 4);
val = *((volatile u_short *) rptr );
v1 = *((volatile u_short *) regs );
return (val & 0xffff) | ((v1 & 0xff00) << 8);
}
static void
ims332_write_register(regno, val)
register unsigned int val;
{
register u_char *regs = (u_char *)IMS332_ADDRESS;
u_char *wptr;
/* spec sez: */
wptr = regs + 0xa0000 + (regno << 4);
*((volatile u_int *)(regs)) = (val >> 8) & 0xff00;
*((volatile u_short *)(wptr)) = val;
}
#define assert_ims332_reset_bit(r) *r &= ~0x40
#define deassert_ims332_reset_bit(r) *r |= 0x40
/*
* Color map
*/
static void
xcfbLoadColorMap(ptr)
ColorMap *ptr;
{
register int i;
if (ptr->index > 256)
return;
ims332_load_colormap_entry(ptr->index, ptr);
}
static void
ims332_load_colormap_entry(entry, map)
ColorMap *map;
{
/* ?? stop VTG */
ims332_write_register(IMS332_REG_LUT_BASE + (entry & 0xff),
(map->Entry.blue << 16) |
(map->Entry.green << 8) |
(map->Entry.red));
}
static void
xcfbInitColorMap()
{
register int i;
ColorMap m;
m.Entry.red = m.Entry.green = m.Entry.blue = 0;
ims332_load_colormap_entry(0, &m);
m.Entry.red = m.Entry.green = m.Entry.blue = 0xff;
for (i = 1; i < 256; i++)
ims332_load_colormap_entry(i, &m);
for (i = 0; i < 3; i++) {
cursor_RGB[i] = 0x00;
cursor_RGB[i + 3] = 0xff;
}
xcfbRestoreCursorColor();
}
/*
* Video on/off
*
* It is unfortunate that X11 goes backward with white@0
* and black@1. So we must stash away the zero-th entry
* and fix it while screen is off. Also must remember
* it, sigh.
*/
static struct {
u_int save;
int off;
} xcfb_vstate;
static void
ims332_video_off()
{
register u_int csr;
if (xcfb_vstate.off)
return;
xcfb_vstate.save = ims332_read_register(IMS332_REG_LUT_BASE);
ims332_write_register(IMS332_REG_LUT_BASE, 0);
ims332_write_register(IMS332_REG_COLOR_MASK, 0);
/* cursor now */
csr = ims332_read_register(IMS332_REG_CSR_A);
csr |= IMS332_CSR_A_DISABLE_CURSOR;
ims332_write_register(IMS332_REG_CSR_A, csr);
xcfb_vstate.off = 1;
}
static void
ims332_video_on()
{
register u_int csr;
if (!xcfb_vstate.off)
return;
ims332_write_register(IMS332_REG_LUT_BASE, xcfb_vstate.save);
ims332_write_register(IMS332_REG_COLOR_MASK, 0xffffffff);
/* cursor now */
csr = ims332_read_register(IMS332_REG_CSR_A);
csr &= ~IMS332_CSR_A_DISABLE_CURSOR;
ims332_write_register(IMS332_REG_CSR_A, csr);
xcfb_vstate.off = 0;
}
/*
* Cursor
*/
void
xcfbPosCursor(x, y)
register int x, y;
{
register struct pmax_fb *fp = &xcfbfb;
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 */
ims332_write_register(IMS332_REG_CURSOR_LOC,
((x & 0xfff) << 12) | (y & 0xfff));
}
/*
* xcfbRestoreCursorColor
*/
static void
xcfbRestoreCursorColor()
{
/* Bg is color[0], Fg is color[1] */
ims332_write_register(IMS332_REG_CURSOR_LUT_0,
(cursor_RGB[2] << 16) |
(cursor_RGB[1] << 8) |
(cursor_RGB[0]));
ims332_write_register(IMS332_REG_CURSOR_LUT_1, 0x7f0000);
ims332_write_register(IMS332_REG_CURSOR_LUT_2,
(cursor_RGB[5] << 16) |
(cursor_RGB[4] << 8) |
(cursor_RGB[3]));
}
/*
* ----------------------------------------------------------------------------
*
* xcfbCursorColor --
*
* Set the color of the cursor.
*
* Results:
* None.
*
* Side effects:
* None.
*
* ----------------------------------------------------------------------------
*/
static void
xcfbCursorColor(color)
unsigned int color[];
{
register int i, j;
for (i = 0; i < 6; i++)
cursor_RGB[i] = (u_char)(color[i] >> 8);
xcfbRestoreCursorColor();
}
static void
xcfbLoadCursor(cursor)
u_short *cursor;
{
register int i, j, k, pos;
register u_short ap, bp, out;
/*
* 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.
*/
pos = 0;
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 >> 2) & 0x3fff) |
((ap & 0x1) << 15) |
((bp & 0x1) << 14);
ap >>= 1;
bp >>= 1;
}
ims332_write_register(IMS332_REG_CURSOR_RAM + pos, out);
pos++;
j++;
}
while (j < 8) {
ims332_write_register(IMS332_REG_CURSOR_RAM + pos, 0);
pos++;
j++;
}
cursor++;
}
while (pos < 512) {
ims332_write_register(IMS332_REG_CURSOR_RAM + pos, 0);
pos++;
}
}
/*
* Initialization
*/
int
xcfbinit()
{
register u_int *reset = (u_int *)IMS332_RESET_ADDRESS;
register struct pmax_fb *fp = &xcfbfb;
fp->isMono = 0;
/*
* Or Cached? A comment in the Mach driver suggests that the X server
* runs faster in cached address space, but the X server is going
* to blow away the data cache whenever it updates the screen, so..
*/
fp->fr_addr = (char *)
MACH_PHYS_TO_UNCACHED(XINE_PHYS_CFB_START + VRAM_OFFSET);
fp->fr_size = 0x100000;
/*
* 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(&xcfbu));
fp->posCursor = xcfbPosCursor;
fp->KBDPutc = dtopKBDPutc;
fp->kbddev = makedev(DTOPDEV, DTOPKBD_PORT);
/*
* Initialize the screen.
*/
#ifdef notdef
assert_ims332_reset_bit(reset);
DELAY(1); /* specs sez 50ns.. */
deassert_ims332_reset_bit(reset);
/* CLOCKIN appears to receive a 6.25 Mhz clock --> PLL 12 for 75Mhz monitor */
ims332_write_register(IMS332_REG_BOOT, 12 | IMS332_BOOT_CLOCK_PLL);
/* initialize VTG */
ims332_write_register(IMS332_REG_CSR_A,
IMS332_BPP_8 | IMS332_CSR_A_DISABLE_CURSOR);
DELAY(50); /* spec does not say */
/* datapath registers (values taken from prom's settings) */
ims332_write_register(IMS332_REG_HALF_SYNCH, 0x10);
ims332_write_register(IMS332_REG_BACK_PORCH, 0x21);
ims332_write_register(IMS332_REG_DISPLAY, 0x100);
ims332_write_register(IMS332_REG_SHORT_DIS, 0x5d);
ims332_write_register(IMS332_REG_BROAD_PULSE, 0x9f);
ims332_write_register(IMS332_REG_V_SYNC, 0xc);
ims332_write_register(IMS332_REG_V_PRE_EQUALIZE, 2);
ims332_write_register(IMS332_REG_V_POST_EQUALIZE, 2);
ims332_write_register(IMS332_REG_V_BLANK, 0x2a);
ims332_write_register(IMS332_REG_V_DISPLAY, 0x600);
ims332_write_register(IMS332_REG_LINE_TIME, 0x146);
ims332_write_register(IMS332_REG_LINE_START, 0x10);
ims332_write_register(IMS332_REG_MEM_INIT, 0xa);
ims332_write_register(IMS332_REG_XFER_DELAY, 0xa);
ims332_write_register(IMS332_REG_COLOR_MASK, 0xffffff);
#endif
/*
* Initialize screen info.
*/
fp->fbu->scrInfo.max_row = 50;
fp->fbu->scrInfo.max_col = 80;
fp->fbu->scrInfo.max_x = 1024;
fp->fbu->scrInfo.max_y = 768;
fp->fbu->scrInfo.max_cur_x = 1008;
fp->fbu->scrInfo.max_cur_y = 752;
fp->fbu->scrInfo.version = 11;
fp->fbu->scrInfo.mthreshold = 4;
fp->fbu->scrInfo.mscale = 2;
fp->fbu->scrInfo.min_cur_x = -15;
fp->fbu->scrInfo.min_cur_y = -15;
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;
xcfbInitColorMap();
ims332_write_register(IMS332_REG_CSR_A,
IMS332_BPP_8 | IMS332_CSR_A_DMA_DISABLE | IMS332_CSR_A_VTG_ENABLE);
xcfbScreenInit();
fbScroll(fp);
fp->initialized = 1;
if (cn_tab.cn_fb == (struct pmax_fb *)0)
cn_tab.cn_fb = fp;
return (1);
}
/*
* ----------------------------------------------------------------------------
*
* xcfbScreenInit --
*
* Initialize the screen.
*
* Results:
* None.
*
* Side effects:
* The screen is initialized.
*
* ----------------------------------------------------------------------------
*/
static void
xcfbScreenInit()
{
register struct pmax_fb *fp = &xcfbfb;
/*
* 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 = 49;
fp->col = 0;
/*
* Load the cursor with the default values
*
*/
xcfbLoadCursor(defCursor);
}
/*
* xcfb keyboard and mouse input. Just punt to the generic ones in fb.c
*/
void
xcfbKbdEvent(ch)
int ch;
{
fbKbdEvent(ch, &xcfbfb);
}
void
xcfbMouseEvent(newRepPtr)
MouseReport *newRepPtr;
{
fbMouseEvent(newRepPtr, &xcfbfb);
}
void
xcfbMouseButtons(newRepPtr)
MouseReport *newRepPtr;
{
fbMouseButtons(newRepPtr, &xcfbfb);
}
#endif /* NDTOP */
#endif /* NXCFB */