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NetBSD/sys/dev/sun/fb.c

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/* $NetBSD: fb.c,v 1.15 2003/08/25 17:50:30 uwe Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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. 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.
*
* @(#)fb.c 8.1 (Berkeley) 6/11/93
*/
/*
* /dev/fb (indirect frame buffer driver). This is gross; we should
* just build cdevsw[] dynamically.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fb.c,v 1.15 2003/08/25 17:50:30 uwe Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <machine/autoconf.h>
#include <machine/kbd.h>
#include <machine/eeprom.h>
#include <sparc/dev/cons.h>
#include <dev/sun/fbio.h>
#include <dev/sun/fbvar.h>
#include "kbd.h"
#include "pfour.h"
static struct fbdevice *devfb;
dev_type_open(fbopen);
dev_type_close(fbclose);
dev_type_ioctl(fbioctl);
dev_type_poll(fbpoll);
dev_type_mmap(fbmmap);
dev_type_kqfilter(fbkqfilter);
const struct cdevsw fb_cdevsw = {
fbopen, fbclose, noread, nowrite, fbioctl,
nostop, notty, fbpoll, fbmmap, fbkqfilter,
};
void
fb_unblank()
{
if (devfb)
(*devfb->fb_driver->fbd_unblank)(devfb->fb_device);
}
/*
* Helper function for frame buffer devices. Decides whether
* the device can be the console output device according to
* PROM info. The result from this function may not be conclusive
* on machines with old PROMs; in that case, drivers should consult
* other sources of configuration information (e.g. EEPROM entries).
*/
#if defined(SUN4U)
/* Temporary special case for sun4u */
int
fb_is_console(node)
int node;
{
extern int fbnode;
return (node == fbnode);
}
#else
int
fb_is_console(node)
int node;
{
int fbnode;
switch (prom_version()) {
case PROM_OLDMON:
/* `node' is not valid; just check for any fb device */
return (prom_stdout() == PROMDEV_SCREEN);
case PROM_OBP_V0:
/*
* First, check if prom_stdout() represents a frame buffer,
* then match on the `fb' property on the root node, if any.
*/
if (prom_stdout() != PROMDEV_SCREEN)
return (0);
fbnode = PROM_getpropint(findroot(), "fb", 0);
return (fbnode == 0 || node == fbnode);
case PROM_OBP_V2:
case PROM_OBP_V3:
case PROM_OPENFIRM:
/* Just match the nodes */
return (node == prom_stdout_node);
}
return (0);
}
#endif /* SUN4U */
void
fb_attach(fb, isconsole)
struct fbdevice *fb;
int isconsole;
{
static int no_replace, seen_force;
/*
* We've already had a framebuffer forced into /dev/fb. Don't
* allow any more, even if this is the console.
*/
if (seen_force) {
if (devfb) { /* sanity */
printf("%s: /dev/fb already full\n",
fb->fb_device->dv_xname);
return;
} else
seen_force = 0;
}
/*
* Check to see if we're being forced into /dev/fb.
*/
if (fb->fb_flags & FB_FORCE) {
if (devfb)
printf("%s: forcefully replacing %s\n",
fb->fb_device->dv_xname,
devfb->fb_device->dv_xname);
devfb = fb;
seen_force = no_replace = 1;
goto attached;
}
/*
* Check to see if we're the console. If we are, then replace
* any currently existing framebuffer.
*/
if (isconsole) {
if (devfb)
printf("%s: replacing %s\n", fb->fb_device->dv_xname,
devfb->fb_device->dv_xname);
devfb = fb;
no_replace = 1;
goto attached;
}
/*
* For the final case, we check to see if we can replace an
* existing framebuffer, if not, say so and return.
*/
if (no_replace) {
if (devfb) { /* sanity */
printf("%s: /dev/fb already full\n",
fb->fb_device->dv_xname);
return;
} else
no_replace = 0;
}
if (devfb)
printf("%s: replacing %s\n", fb->fb_device->dv_xname,
devfb->fb_device->dv_xname);
devfb = fb;
attached:
printf("%s: attached to /dev/fb\n", devfb->fb_device->dv_xname);
}
int
fbopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
if (devfb == NULL)
return (ENXIO);
return (devfb->fb_driver->fbd_open)(dev, flags, mode, p);
}
int
fbclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
return (devfb->fb_driver->fbd_close)(dev, flags, mode, p);
}
int
fbioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
return (devfb->fb_driver->fbd_ioctl)(dev, cmd, data, flags, p);
}
int
fbpoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
return (devfb->fb_driver->fbd_poll)(dev, events, p);
}
int
fbkqfilter(dev, kn)
dev_t dev;
struct knote *kn;
{
return (devfb->fb_driver->fbd_kqfilter)(dev, kn);
}
paddr_t
fbmmap(dev, off, prot)
dev_t dev;
off_t off;
int prot;
{
paddr_t (*map)__P((dev_t, off_t, int)) = devfb->fb_driver->fbd_mmap;
if (map == NULL)
return (-1);
return (map(dev, off, prot));
}
void
fb_setsize_obp(fb, depth, def_width, def_height, node)
struct fbdevice *fb;
int depth, def_width, def_height, node;
{
fb->fb_type.fb_width = PROM_getpropint(node, "width", def_width);
fb->fb_type.fb_height = PROM_getpropint(node, "height", def_height);
fb->fb_linebytes = PROM_getpropint(node, "linebytes",
(fb->fb_type.fb_width * depth) / 8);
}
void
fb_setsize_eeprom(fb, depth, def_width, def_height)
struct fbdevice *fb;
int depth, def_width, def_height;
{
#if !defined(SUN4U)
struct eeprom *eep = (struct eeprom *)eeprom_va;
if (!CPU_ISSUN4) {
printf("fb_setsize_eeprom: not sun4\n");
return;
}
/* Set up some defaults. */
fb->fb_type.fb_width = def_width;
fb->fb_type.fb_height = def_height;
if (fb->fb_flags & FB_PFOUR) {
#if NPFOUR > 0
fb_setsize_pfour(fb);
#endif
} else if (eep != NULL) {
switch (eep->eeScreenSize) {
case EE_SCR_1152X900:
fb->fb_type.fb_width = 1152;
fb->fb_type.fb_height = 900;
break;
case EE_SCR_1024X1024:
fb->fb_type.fb_width = 1024;
fb->fb_type.fb_height = 1024;
break;
case EE_SCR_1600X1280:
fb->fb_type.fb_width = 1600;
fb->fb_type.fb_height = 1280;
break;
case EE_SCR_1440X1440:
fb->fb_type.fb_width = 1440;
fb->fb_type.fb_height = 1440;
break;
default:
/*
* XXX: Do nothing, I guess.
* Should we print a warning about
* an unknown value? --thorpej
*/
break;
}
}
fb->fb_linebytes = (fb->fb_type.fb_width * depth) / 8;
#endif /* !SUN4U */
}
#ifdef RASTERCONSOLE
#include <machine/kbd.h>
static void fb_bell __P((int));
#if !defined(RASTERCONS_FULLSCREEN)
static int a2int __P((char *, int));
static int
a2int(cp, deflt)
register char *cp;
register int deflt;
{
register int i = 0;
if (*cp == '\0')
return (deflt);
while (*cp != '\0')
i = i * 10 + *cp++ - '0';
return (i);
}
#endif
static void
fb_bell(on)
int on;
{
#if NKBD > 0
kbd_bell(on);
#endif
}
void
fbrcons_init(fb)
struct fbdevice *fb;
{
struct rconsole *rc = &fb->fb_rcons;
struct rasops_info *ri = &fb->fb_rinfo;
int maxrow, maxcol;
#if !defined(RASTERCONS_FULLSCREEN)
int *row, *col;
#endif
/* Set up what rasops needs to know about */
bzero(ri, sizeof *ri);
ri->ri_stride = fb->fb_linebytes;
ri->ri_bits = (caddr_t)fb->fb_pixels;
ri->ri_depth = fb->fb_type.fb_depth;
ri->ri_width = fb->fb_type.fb_width;
ri->ri_height = fb->fb_type.fb_height;
maxrow = 5000;
maxcol = 5000;
#if !defined(RASTERCONS_FULLSCREEN)
#if !defined(SUN4U)
if (CPU_ISSUN4) {
struct eeprom *eep = (struct eeprom *)eeprom_va;
if (eep == NULL) {
maxcol = 80;
maxrow = 34;
} else {
maxcol = eep->eeTtyCols;
maxrow = eep->eeTtyRows;
}
}
#endif /* !SUN4U */
if (!CPU_ISSUN4) {
maxcol =
a2int(PROM_getpropstring(optionsnode, "screen-#columns"), 80);
maxrow =
a2int(PROM_getpropstring(optionsnode, "screen-#rows"), 34);
}
#endif /* !RASTERCONS_FULLSCREEN */
/*
* - force monochrome output
* - eraserows() hack to clear the *entire* display
* - cursor is currently enabled
* - center output
*/
ri->ri_flg = RI_FULLCLEAR | RI_CURSOR | RI_CENTER;
/* Get operations set and connect to rcons */
if (rasops_init(ri, maxrow, maxcol))
panic("fbrcons_init: rasops_init failed!");
if (ri->ri_depth == 8) {
int i;
for (i = 0; i < 16; i++) {
/*
* Cmap entries are repeated four times in the
* 32 bit wide `devcmap' entries for optimization
* purposes; see rasops(9)
*/
#define I_TO_DEVCMAP(i) ((i) | ((i)<<8) | ((i)<<16) | ((i)<<24))
/*
* Use existing colormap entries for black and white
*/
if ((i & 7) == WSCOL_BLACK) {
ri->ri_devcmap[i] = I_TO_DEVCMAP(255);
continue;
}
if ((i & 7) == WSCOL_WHITE) {
ri->ri_devcmap[i] = I_TO_DEVCMAP(0);
continue;
}
/*
* Other entries refer to ANSI map, which for now
* is setup in bt_subr.c
*/
ri->ri_devcmap[i] = I_TO_DEVCMAP(i + 1);
#undef I_TO_DEVCMAP
}
}
rc->rc_row = rc->rc_col = 0;
#if !defined(RASTERCONS_FULLSCREEN)
/* Determine addresses of prom emulator row and column */
if (!CPU_ISSUN4 && !romgetcursoraddr(&row, &col)) {
rc->rc_row = *row;
rc->rc_col = *col;
}
#endif
ri->ri_crow = rc->rc_row;
ri->ri_ccol = rc->rc_col;
rc->rc_ops = &ri->ri_ops;
rc->rc_cookie = ri;
rc->rc_bell = fb_bell;
rc->rc_maxcol = ri->ri_cols;
rc->rc_maxrow = ri->ri_rows;
rc->rc_width = ri->ri_emuwidth;
rc->rc_height = ri->ri_emuheight;
rc->rc_deffgcolor = WSCOL_BLACK;
rc->rc_defbgcolor = WSCOL_WHITE;
rcons_init(rc, 0);
/* Hook up virtual console */
v_putc = rcons_cnputc;
}
int
fbrcons_rows()
{
return (devfb ? devfb->fb_rcons.rc_maxrow : 0);
}
int
fbrcons_cols()
{
return (devfb ? devfb->fb_rcons.rc_maxcol : 0);
}
#endif /* RASTERCONSOLE */
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