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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: fb_misc.c
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 7/91
*
* Driver for the PMAG-AA simple mono framebuffer
*
*/
#include <mfb.h>
#if (NMFB > 0)
/*
* NOTE: This driver relies heavily on the pm one.
*/
#include <device/device_types.h>
#include <chips/screen_defs.h>
#include <chips/pm_defs.h>
typedef pm_softc_t fb_softc_t;
#include <chips/bt455.h>
/*
* Initialize color map, for kernel use
*/
fb_init_colormap(sc)
screen_softc_t sc;
{
fb_softc_t *fb = (fb_softc_t*)sc->hw_state;
user_info_t *up = sc->up;
color_map_t Bg_Fg[2];
register int i;
bt455_init_colormap( fb->vdac_registers );
/* 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;
bt455_cursor_color( fb->vdac_registers, Bg_Fg);
}
/*
* Large viz small cursor
*/
fb_small_cursor_to_large(up, cursor)
user_info_t *up;
cursor_sprite_t cursor;
{
unsigned char *curbytes, *sprite;
int i;
/* Our cursor turns out mirrored, donno why */
static unsigned char mirror[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
/* 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, image(fg) first then mask(bg) */
curbytes = (unsigned char *) cursor;
/* we have even byte --> image, odd byte --> mask;
line size is 8 bytes instead of 2 */
sprite = (unsigned char *) up->dev_dep_2.pm.cursor_sprite;
for (i = 0; i < 32; i += 2) {
*sprite++ = mirror[curbytes[i]]; /* fg */
*sprite++ = mirror[curbytes[i + 32]]; /* bg */
*sprite++ = mirror[curbytes[i + 1]]; /* fg */
*sprite++ = mirror[curbytes[i + 33]]; /* bg */
sprite += 12; /* skip rest of the line */
}
}
/*
* Device-specific set status
*/
fb_set_status(sc, flavor, status, status_count)
screen_softc_t sc;
int flavor;
dev_status_t status;
unsigned int status_count;
{
fb_softc_t *fb = (fb_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;
fb_small_cursor_to_large(sc->up, (cursor_sprite_t*) status);
/* Fall through */
case SCREEN_LOAD_CURSOR_LONG: { /* 3max/3min only */
sc->flags |= SCREEN_BEING_UPDATED;
bt431_cursor_sprite(fb->cursor_registers, 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;
bt455_cursor_color (fb->vdac_registers, 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 < 8) { /* 8&9 are fg&bg, do not touch */
sc->flags |= SCREEN_BEING_UPDATED;
bt455_load_colormap_entry( fb->vdac_registers, e->index, &e->value);
sc->flags &= ~SCREEN_BEING_UPDATED;
}
break;
}
default:
return D_INVALID_OPERATION;
}
return D_SUCCESS;
}
/*
* Do what's needed when X exits
*/
fb_soft_reset(sc)
screen_softc_t sc;
{
fb_softc_t *fb = (fb_softc_t*) sc->hw_state;
user_info_t *up = sc->up;
extern cursor_sprite_t bt431_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, and init cursor
*/
bt455_init(fb->vdac_registers);
bt431_init(fb->cursor_registers);
/*
* Load kernel's cursor sprite
*/
bt431_cursor_sprite(fb->cursor_registers, bt431_default_cursor);
/*
* Color map and cursor color
*/
fb_init_colormap(sc);
}
#endif (NMFB > 0)
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