File: [local] / sys / arch / sparc / dev / fb.c (download)
Revision 1.1, Tue Mar 4 16:08:03 2008 UTC (16 years, 2 months ago) by nbrk
Branch point for: MAIN
Initial revision
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/* $OpenBSD: fb.c,v 1.43 2006/12/03 22:10:30 miod Exp $ */
/* $NetBSD: fb.c,v 1.23 1997/07/07 23:30:22 pk Exp $ */
/*
* Copyright (c) 2002, 2004 Miodrag Vallat.
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*
* 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
*/
/*
* Common wsdisplay framebuffer drivers helpers.
*/
#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/conf.h>
#if defined(SUN4)
#include <machine/eeprom.h>
#include <sparc/dev/pfourreg.h>
#endif
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <machine/fbvar.h>
#include "wsdisplay.h"
/*
* Sun specific color indexes.
* Black is not really 7, but rather ~0; to fit within the 8 ANSI color
* palette we are using on console, we pick (~0) & 0x07 instead.
* This essentially swaps WSCOL_BLACK and WSCOL_WHITE.
*/
#define WSCOL_SUN_WHITE 0
#define WSCOL_SUN_BLACK 7
/*
* emergency unblank code
* XXX should be somewhat moved to wscons MI code
*/
void (*fb_burner)(void *, u_int, u_int);
void *fb_cookie;
void
fb_unblank()
{
if (fb_burner != NULL)
(*fb_burner)(fb_cookie, 1, 0);
}
#if NWSDISPLAY > 0
#if defined(SUN4C) || defined(SUN4M)
static int a2int(char *, int);
#endif
static void fb_initwsd(struct sunfb *);
static void fb_updatecursor(struct rasops_info *);
int fb_alloc_screen(void *, const struct wsscreen_descr *, void **,
int *, int *, long *);
void fb_free_screen(void *, void *);
int fb_show_screen(void *, void *, int, void (*)(void *, int, int),
void *);
void
fb_setsize(struct sunfb *sf, int def_depth, int def_width, int def_height,
int node, int bustype)
{
int def_linebytes;
switch (bustype) {
case BUS_VME16:
case BUS_VME32:
case BUS_OBIO:
#if defined(SUN4M)
/* 4m may have SBus-like framebuffer on obio */
if (CPU_ISSUN4M) {
goto obpsize;
}
#endif
/* Set up some defaults. */
sf->sf_width = def_width;
sf->sf_height = def_height;
sf->sf_depth = def_depth;
#if defined(SUN4)
/*
* This is not particularly useful on Sun 4 VME framebuffers.
* The EEPROM only contains info about the built-in.
*/
if (CPU_ISSUN4 && bustype == BUS_OBIO) {
struct eeprom *eep = (struct eeprom *)eeprom_va;
if (ISSET(sf->sf_flags, FB_PFOUR)) {
volatile u_int32_t pfour;
u_int size;
pfour = *sf->sf_pfour;
/*
* Use the pfour register to determine
* the size. Note that the cgsix and
* cgeight don't use this size encoding.
* In this case, we have to settle
* for the defaults we were provided
* with.
*/
if ((PFOUR_ID(pfour) == PFOUR_ID_COLOR24) ||
(PFOUR_ID(pfour) == PFOUR_ID_FASTCOLOR))
size = 0x00; /* invalid */
else
size = PFOUR_SIZE(pfour);
switch (size) {
case PFOUR_SIZE_1152X900:
sf->sf_width = 1152;
sf->sf_height = 900;
break;
case PFOUR_SIZE_1024X1024:
sf->sf_width = 1024;
sf->sf_height = 1024;
break;
case PFOUR_SIZE_1280X1024:
sf->sf_width = 1280;
sf->sf_height = 1024;
break;
case PFOUR_SIZE_1600X1280:
sf->sf_width = 1600;
sf->sf_height = 1280;
break;
case PFOUR_SIZE_1440X1440:
sf->sf_width = 1440;
sf->sf_height = 1440;
break;
case PFOUR_SIZE_640X480:
sf->sf_width = 640;
sf->sf_height = 480;
break;
}
} else if (eep != NULL) {
switch (eep->eeScreenSize) {
case EE_SCR_1152X900:
sf->sf_width = 1152;
sf->sf_height = 900;
break;
case EE_SCR_1024X1024:
sf->sf_width = 1024;
sf->sf_height = 1024;
break;
case EE_SCR_1600X1280:
sf->sf_width = 1600;
sf->sf_height = 1280;
break;
case EE_SCR_1440X1440:
sf->sf_width = 1440;
sf->sf_height = 1440;
break;
}
}
}
#endif /* SUN4 */
#if defined(SUN4M)
if (CPU_ISSUN4M) {
/* XXX: need code to find 4/600 vme screen size */
}
#endif /* SUN4M */
sf->sf_linebytes = (sf->sf_width * sf->sf_depth) / 8;
break;
case BUS_SBUS:
#if defined(SUN4M)
obpsize:
#endif
sf->sf_depth = getpropint(node, "depth", def_depth);
sf->sf_width = getpropint(node, "width", def_width);
sf->sf_height = getpropint(node, "height", def_height);
def_linebytes =
roundup(sf->sf_width, sf->sf_depth) * sf->sf_depth / 8;
sf->sf_linebytes = getpropint(node, "linebytes", def_linebytes);
/*
* XXX If we are configuring a board in a wider depth level
* than the mode it is currently operating in, the PROM will
* return a linebytes property tied to the current depth value,
* which is NOT what we are relying upon!
*/
if (sf->sf_linebytes < (sf->sf_width * sf->sf_depth) / 8)
sf->sf_linebytes = def_linebytes;
break;
}
sf->sf_fbsize = sf->sf_height * sf->sf_linebytes;
}
#if defined(SUN4C) || defined(SUN4M)
static int
a2int(char *cp, int deflt)
{
int i = 0;
if (*cp == '\0')
return (deflt);
while (*cp != '\0')
i = i * 10 + *cp++ - '0';
return (i);
}
#endif
/* setup the embedded wsscreen_descr structure from rasops settings */
static void
fb_initwsd(struct sunfb *sf)
{
strlcpy(sf->sf_wsd.name, "std", sizeof(sf->sf_wsd.name));
sf->sf_wsd.capabilities = sf->sf_ro.ri_caps;
sf->sf_wsd.nrows = sf->sf_ro.ri_rows;
sf->sf_wsd.ncols = sf->sf_ro.ri_cols;
sf->sf_wsd.textops = &sf->sf_ro.ri_ops;
}
static void
fb_updatecursor(struct rasops_info *ri)
{
struct sunfb *sf = (struct sunfb *)ri->ri_hw;
if (sf->sf_crowp != NULL)
*sf->sf_crowp = ri->ri_crow;
if (sf->sf_ccolp != NULL)
*sf->sf_ccolp = ri->ri_ccol;
}
void
fbwscons_init(struct sunfb *sf, int flags)
{
struct rasops_info *ri = &sf->sf_ro;
int cols, rows;
/* ri_hw and ri_bits must have already been setup by caller */
ri->ri_flg = RI_CENTER | RI_FULLCLEAR | flags;
ri->ri_depth = sf->sf_depth;
ri->ri_stride = sf->sf_linebytes;
ri->ri_width = sf->sf_width;
ri->ri_height = sf->sf_height;
#if defined(SUN4C) || defined(SUN4M)
if (CPU_ISSUN4COR4M) {
rows = a2int(getpropstring(optionsnode, "screen-#rows"), 34);
cols = a2int(getpropstring(optionsnode, "screen-#columns"), 80);
}
#endif
#if defined(SUN4)
if (CPU_ISSUN4) {
struct eeprom *ep = (struct eeprom *)eeprom_va;
if (ep != NULL) {
rows = (u_short)ep->eeTtyRows;
cols = (u_short)ep->eeTtyCols;
/* deal with broken nvram contents... */
if (rows <= 0)
rows = 34;
if (cols <= 0)
cols = 80;
} else {
rows = 34;
cols = 80;
}
}
#endif
rasops_init(ri, rows, cols);
if (sf->sf_depth == 8) {
/*
* If we are running with an indexed palette, compensate
* the swap of black and white through ri_devcmap.
*/
ri->ri_devcmap[WSCOL_SUN_BLACK] = 0;
ri->ri_devcmap[WSCOL_SUN_WHITE] = 0xffffffff;
} else if (sf->sf_depth > 8) {
/*
* If we are running on a direct color frame buffer,
* make the ``normal'' white the same as the hilighted
* white.
*/
ri->ri_devcmap[WSCOL_WHITE] = ri->ri_devcmap[WSCOL_WHITE + 8];
}
}
void
fbwscons_console_init(struct sunfb *sf, int row)
{
struct rasops_info *ri = &sf->sf_ro;
long defattr;
if (CPU_ISSUN4 || romgetcursoraddr(&sf->sf_crowp, &sf->sf_ccolp))
sf->sf_ccolp = sf->sf_crowp = NULL;
if (sf->sf_ccolp != NULL)
ri->ri_ccol = *sf->sf_ccolp;
if (row < 0) {
if (sf->sf_crowp != NULL)
ri->ri_crow = *sf->sf_crowp;
else
/* assume last row */
ri->ri_crow = ri->ri_rows - 1;
} else {
/*
* If we force the display row, this is because the screen
* has been cleared or the font has been changed.
* In this case, choose not to keep pointers to the PROM
* cursor position, as the values are likely to be inaccurate
* upon shutdown...
*/
sf->sf_crowp = sf->sf_ccolp = NULL;
ri->ri_crow = row;
}
/*
* Scale back rows and columns if the font would not otherwise
* fit on this display. Without this we would panic later.
*/
if (ri->ri_crow >= ri->ri_rows)
ri->ri_crow = ri->ri_rows - 1;
if (ri->ri_ccol >= ri->ri_cols)
ri->ri_ccol = ri->ri_cols - 1;
/*
* Take care of updating the PROM cursor position as well if we can.
*/
if (ri->ri_updatecursor == NULL &&
(sf->sf_ccolp != NULL || sf->sf_crowp != NULL))
ri->ri_updatecursor = fb_updatecursor;
if (ISSET(ri->ri_caps, WSSCREEN_WSCOLORS))
ri->ri_ops.alloc_attr(ri,
WSCOL_BLACK, WSCOL_WHITE, WSATTR_WSCOLORS, &defattr);
else
ri->ri_ops.alloc_attr(ri, 0, 0, 0, &defattr);
fb_initwsd(sf);
wsdisplay_cnattach(&sf->sf_wsd, ri,
ri->ri_ccol, ri->ri_crow, defattr);
}
void
fbwscons_setcolormap(struct sunfb *sf,
void (*setcolor)(void *, u_int, u_int8_t, u_int8_t, u_int8_t))
{
int i;
const u_char *color;
if (sf->sf_depth <= 8 && setcolor != NULL) {
for (i = 0; i < 16; i++) {
color = &rasops_cmap[i * 3];
setcolor(sf, i, color[0], color[1], color[2]);
}
for (i = 240; i < 256; i++) {
color = &rasops_cmap[i * 3];
setcolor(sf, i, color[0], color[1], color[2]);
}
/*
* Compensate for BoW default hardware palette: existing
* output (which we do not want to affect) is black on
* white with color index 0 being white and 0xff being
* black.
*/
setcolor(sf, WSCOL_SUN_WHITE, 0xff, 0xff, 0xff);
setcolor(sf, 0xff ^ WSCOL_SUN_WHITE, 0, 0, 0);
setcolor(sf, WSCOL_SUN_BLACK, 0, 0, 0);
setcolor(sf, 0xff ^ (WSCOL_SUN_BLACK), 0xff, 0xff, 0xff);
}
}
void
fbwscons_attach(struct sunfb *sf, struct wsdisplay_accessops *op, int isconsole)
{
struct wsemuldisplaydev_attach_args waa;
if (isconsole == 0) {
/* done in wsdisplay_cnattach() earlier if console */
fb_initwsd(sf);
} else {
/* remember screen burner routine */
fb_burner = op->burn_screen;
fb_cookie = sf;
}
/* plug common wsdisplay_accessops if necessary */
if (op->alloc_screen == NULL) {
op->alloc_screen = fb_alloc_screen;
op->free_screen = fb_free_screen;
op->show_screen = fb_show_screen;
}
sf->sf_scrlist[0] = &sf->sf_wsd;
sf->sf_wsl.nscreens = 1;
sf->sf_wsl.screens = (const struct wsscreen_descr **)sf->sf_scrlist;
waa.console = isconsole;
waa.scrdata = &sf->sf_wsl;
waa.accessops = op;
waa.accesscookie = sf;
waa.defaultscreens = 0;
config_found(&sf->sf_dev, &waa, wsemuldisplaydevprint);
}
/*
* Common wsdisplay_accessops routines.
*/
int
fb_alloc_screen(void *v, const struct wsscreen_descr *type,
void **cookiep, int *curxp, int *curyp, long *attrp)
{
struct sunfb *sf = v;
struct rasops_info *ri = &sf->sf_ro;
if (sf->sf_nscreens > 0)
return (ENOMEM);
*cookiep = ri;
*curyp = 0;
*curxp = 0;
if (ISSET(ri->ri_caps, WSSCREEN_WSCOLORS))
ri->ri_ops.alloc_attr(ri,
WSCOL_BLACK, WSCOL_WHITE, WSATTR_WSCOLORS, attrp);
else
ri->ri_ops.alloc_attr(ri, 0, 0, 0, attrp);
sf->sf_nscreens++;
return (0);
}
void
fb_free_screen(void *v, void *cookie)
{
struct sunfb *sf = v;
sf->sf_nscreens--;
}
int
fb_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int),
void *cbarg)
{
return (0);
}
#if defined(SUN4)
/*
* Support routines for P4 framebuffers.
*/
/*
* Probe for a P4 framebuffer. Return values:
* PFOUR_NOTPFOUR framebuffer is not a P4 framebuffer
* otherwise returns P4 ID
*/
int
fb_pfour_id(void *va)
{
volatile u_int32_t val, save, *pfour = va;
/* Read the pfour register. */
save = *pfour;
/*
* Try to modify the type code. If it changes, put the
* original value back, and notify the caller that it's
* not a pfour framebuffer.
*/
val = save & ~PFOUR_REG_RESET;
*pfour = (val ^ PFOUR_FBTYPE_MASK);
if ((*pfour ^ val) & PFOUR_FBTYPE_MASK) {
*pfour = save;
return (PFOUR_NOTPFOUR);
}
return (PFOUR_ID(val));
}
/*
* Screen burner routine for P4
*/
void
fb_pfour_burner(void *v, u_int enable, u_int flags)
{
struct sunfb *sf = (struct sunfb *)v;
volatile u_int32_t pfour;
pfour = *sf->sf_pfour & ~(PFOUR_REG_INTCLR | PFOUR_REG_VIDEO);
*sf->sf_pfour = pfour | (enable ? PFOUR_REG_VIDEO : 0);
}
#endif /* SUN4 */
#endif /* NWSDISPLAY */
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