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/*
* 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 "AS IS"
* 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 Mellon
* the rights to redistribute these changes.
*/
/*
* File: xcfb_misc.c
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 1/92
*
* Driver for the MAXine color framebuffer
*
*/
#include <xcfb.h>
#if (NXCFB > 0)
/*
* NOTE: This driver relies heavily on the pm one.
*/
#include <device/device_types.h>
#include <chips/screen_defs.h>
#include <chips/xcfb_monitor.h>
#include <chips/pm_defs.h>
typedef pm_softc_t xcfb_softc_t;
#include <chips/ims332.h>
#define ims332 cursor_registers
/*
* Initialize color map, for kernel use
*/
xcfb_init_colormap(sc)
screen_softc_t sc;
{
xcfb_softc_t *xcfb = (xcfb_softc_t*)sc->hw_state;
user_info_t *up = sc->up;
color_map_t Bg_Fg[2];
register int i;
ims332_init_colormap( xcfb->ims332 );
/* init bg/fg colors */
for (i = 0; i < 3; i++) {
up->dev_dep_2.pm.Bg_color[i] = 0x00;
up->dev_dep_2.pm.Fg_color[i] = 0xff;
}
Bg_Fg[0].red = Bg_Fg[0].green = Bg_Fg[0].blue = 0x00;
Bg_Fg[1].red = Bg_Fg[1].green = Bg_Fg[1].blue = 0xff;
ims332_cursor_color( xcfb->ims332, Bg_Fg);
}
/*
* Large viz small cursor
*/
xcfb_small_cursor_to_large(up, cursor)
user_info_t *up;
cursor_sprite_t cursor;
{
unsigned short new_cursor[32];
unsigned char *cursor_bytes;
char *sprite;
register int i;
/* Clear out old cursor */
bzero( up->dev_dep_2.pm.cursor_sprite,
sizeof(up->dev_dep_2.pm.cursor_sprite));
/* small cursor is 32x2 bytes, fg first */
cursor_bytes = (unsigned char *) cursor;
/* use the upper left corner of the large cursor
* as a 64x1 cursor, fg&bg alternated */
for (i = 0; i < 32; i++) {
register short nc = 0;
register unsigned char fg, bg;
register int j, k;
fg = cursor_bytes[i];
bg = cursor_bytes[i + 32];
bg &= ~fg;
for (j = 1, k = 0; j < 256; j <<= 1) {
nc |= (bg & j) << (k++);
nc |= (fg & j) << (k);
}
new_cursor[i] = nc;
}
/* Now stick it in the proper place */
cursor_bytes = (unsigned char *) new_cursor;
sprite = up->dev_dep_2.pm.cursor_sprite;
for (i = 0; i < 64; i += 4) {
*sprite++ = cursor_bytes[i + 0];
*sprite++ = cursor_bytes[i + 1];
*sprite++ = cursor_bytes[i + 2];
*sprite++ = cursor_bytes[i + 3];
sprite += 12; /* skip rest of the line */
}
}
/*
* Device-specific set status
*/
xcfb_set_status(sc, flavor, status, status_count)
screen_softc_t sc;
int flavor;
dev_status_t status;
unsigned int status_count;
{
xcfb_softc_t *xcfb = (xcfb_softc_t*) sc->hw_state;
switch (flavor) {
case SCREEN_ADJ_MAPPED_INFO:
return pm_set_status(sc, flavor, status, status_count);
case SCREEN_LOAD_CURSOR:
if (status_count < sizeof(cursor_sprite_t)/sizeof(int))
return D_INVALID_SIZE;
xcfb_small_cursor_to_large(sc->up, (cursor_sprite_t*) status);
/* Fall through */
case SCREEN_LOAD_CURSOR_LONG: /* 3max only */
sc->flags |= SCREEN_BEING_UPDATED;
ims332_cursor_sprite(xcfb->ims332, sc->up->dev_dep_2.pm.cursor_sprite);
sc->flags &= ~SCREEN_BEING_UPDATED;
break;
case SCREEN_SET_CURSOR_COLOR: {
color_map_t c[2];
register cursor_color_t *cc = (cursor_color_t*) status;
c[0].red = cc->Bg_rgb[0];
c[0].green = cc->Bg_rgb[1];
c[0].blue = cc->Bg_rgb[2];
c[1].red = cc->Fg_rgb[0];
c[1].green = cc->Fg_rgb[1];
c[1].blue = cc->Fg_rgb[2];
sc->flags |= SCREEN_BEING_UPDATED;
ims332_cursor_color (xcfb->ims332, c );
sc->flags &= ~SCREEN_BEING_UPDATED;
break;
}
case SCREEN_SET_CMAP_ENTRY: {
color_map_entry_t *e = (color_map_entry_t*) status;
if (e->index < 256) {
sc->flags |= SCREEN_BEING_UPDATED;
ims332_load_colormap_entry( xcfb->ims332, e->index, &e->value);
sc->flags &= ~SCREEN_BEING_UPDATED;
}
break;
}
default:
return D_INVALID_OPERATION;
}
return D_SUCCESS;
}
/*
* Hardware initialization
*/
xcfb_init_screen(xcfb)
xcfb_softc_t *xcfb;
{
extern xcfb_monitor_type_t xcfb_get_monitor_type();
ims332_init( xcfb->ims332, xcfb->vdac_registers, xcfb_get_monitor_type());
}
/*
* Do what's needed when X exits
*/
xcfb_soft_reset(sc)
screen_softc_t sc;
{
xcfb_softc_t *xcfb = (xcfb_softc_t*) sc->hw_state;
user_info_t *up = sc->up;
extern cursor_sprite_t dc503_default_cursor;
/*
* Restore params in mapped structure
*/
pm_init_screen_params(sc,up);
up->row = up->max_row - 1;
up->dev_dep_2.pm.x26 = 2; /* you do not want to know */
up->dev_dep_1.pm.x18 = (short*)2;
/*
* Restore RAMDAC chip to default state
*/
xcfb_init_screen(xcfb);
/*
* Load kernel's cursor sprite: just use the same pmax one
*/
xcfb_small_cursor_to_large(up, dc503_default_cursor);
ims332_cursor_sprite(xcfb->ims332, up->dev_dep_2.pm.cursor_sprite);
/*
* Color map and cursor color
*/
xcfb_init_colormap(sc);
}
#endif (NXCFB > 0)
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