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/*
* linux/drivers/video/cyber.c -- Low level frame buffer operations for the
* CyberVision64 (accelerated)
*
* Created 5 Apr 1997 by Geert Uytterhoeven
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/string.h>
#include <linux/fb.h>
#include "fbcon.h"
#include "s3blit.h"
/*
* Prototypes
*/
static int open_cyber(struct display *p);
static void release_cyber(void);
static void bmove_cyber(struct display *p, int sy, int sx, int dy, int dx,
int height, int width);
static void clear_cyber(struct vc_data *conp, struct display *p, int sy, int sx,
int height, int width);
static void putc_cyber(struct vc_data *conp, struct display *p, int c, int yy,
int xx);
static void putcs_cyber(struct vc_data *conp, struct display *p, const char *s,
int count, int yy, int xx);
static void rev_char_cyber(struct display *p, int xx, int yy);
/*
* Acceleration functions in cyberfb.c
*/
extern void Cyber_WaitQueue(unsigned short fifo);
extern void Cyber_WaitBlit(void);
extern void Cyber_BitBLT(unsigned short curx, unsigned short cury,
unsigned short destx, unsigned short desty,
unsigned short width, unsigned short height,
unsigned short mode);
extern void Cyber_RectFill(unsigned short xx, unsigned short yy,
unsigned short width, unsigned short height,
unsigned short mode, unsigned short fillcolor);
extern void Cyber_MoveCursor(unsigned short xx, unsigned short yy);
/*
* `switch' for the low level operations
*/
static struct display_switch dispsw_cyber = {
open_cyber, release_cyber, bmove_cyber, clear_cyber, putc_cyber,
putcs_cyber, rev_char_cyber
};
/*
* CyberVision64 (accelerated)
*/
static int open_cyber(struct display *p)
{
if (p->type != FB_TYPE_PACKED_PIXELS ||
p->var.accel != FB_ACCEL_CYBERVISION)
return -EINVAL;
p->next_line = p->var.xres_virtual*p->var.bits_per_pixel>>3;
p->next_plane = 0;
MOD_INC_USE_COUNT;
return 0;
}
static void release_cyber(void)
{
MOD_DEC_USE_COUNT;
}
static void bmove_cyber(struct display *p, int sy, int sx, int dy, int dx,
int height, int width)
{
sx *= 8; dx *= 8; width *= 8;
Cyber_BitBLT((u_short)sx, (u_short)(sy*p->fontheight), (u_short)dx,
(u_short)(dy*p->fontheight), (u_short)width,
(u_short)(height*p->fontheight), (u_short)S3_NEW);
}
static void clear_cyber(struct vc_data *conp, struct display *p, int
sy, int sx, int height, int width)
{
unsigned char bg;
sx *= 8; width *= 8;
bg = attr_bgcol_ec(p,conp);
Cyber_RectFill((u_short)sx,
(u_short)(sy*p->fontheight),
(u_short)width,
(u_short)(height*p->fontheight),
(u_short)S3_NEW,
(u_short)bg);
}
static void putc_cyber(struct vc_data *conp, struct display *p, int c, int yy,
int xx)
{
u_char *dest, *cdat;
u_long tmp;
u_int rows, revs, underl;
u_char d;
u_char fg, bg;
c &= 0xff;
dest = p->screen_base+yy*p->fontheight*p->next_line+8*xx;
cdat = p->fontdata+(c*p->fontheight);
fg = p->fgcol;
bg = p->bgcol;
revs = conp->vc_reverse;
underl = conp->vc_underline;
Cyber_WaitBlit();
for (rows = p->fontheight; rows--; dest += p->next_line) {
d = *cdat++;
if (underl && !rows)
d = 0xff;
if (revs)
d = ~d;
tmp = ((d & 0x80) ? fg : bg) << 24;
tmp |= ((d & 0x40) ? fg : bg) << 16;
tmp |= ((d & 0x20) ? fg : bg) << 8;
tmp |= ((d & 0x10) ? fg : bg);
*((u_long*) dest) = tmp;
tmp = ((d & 0x8) ? fg : bg) << 24;
tmp |= ((d & 0x4) ? fg : bg) << 16;
tmp |= ((d & 0x2) ? fg : bg) << 8;
tmp |= ((d & 0x1) ? fg : bg);
*((u_long*) dest + 1) = tmp;
}
}
static void putcs_cyber(struct vc_data *conp, struct display *p, const char *s,
int count, int yy, int xx)
{
u_char *dest, *dest0, *cdat;
u_long tmp;
u_int rows, underl;
u_char c, d;
u_char fg, bg;
dest0 = p->screen_base+yy*p->fontheight*p->next_line+8*xx;
fg = p->fgcol;
bg = p->bgcol;
underl = conp->vc_underline;
Cyber_WaitBlit();
while (count--) {
c = *s++;
dest = dest0;
dest0 += 8;
cdat = p->fontdata+(c*p->fontheight);
for (rows = p->fontheight; rows--; dest += p->next_line) {
d = *cdat++;
if (underl && !rows)
d = 0xff;
tmp = ((d & 0x80) ? fg : bg) << 24;
tmp |= ((d & 0x40) ? fg : bg) << 16;
tmp |= ((d & 0x20) ? fg : bg) << 8;
tmp |= ((d & 0x10) ? fg : bg);
*((u_long*) dest) = tmp;
tmp = ((d & 0x8) ? fg : bg) << 24;
tmp |= ((d & 0x4) ? fg : bg) << 16;
tmp |= ((d & 0x2) ? fg : bg) << 8;
tmp |= ((d & 0x1) ? fg : bg);
*((u_long*) dest + 1) = tmp;
}
}
}
static void rev_char_cyber(struct display *p, int xx, int yy)
{
unsigned char *dest;
unsigned int rows;
unsigned char fg, bg;
fg = p->fgcol;
bg = p->bgcol;
dest = p->screen_base+yy*p->fontheight*p->next_line+8*xx;
Cyber_WaitBlit();
for (rows = p->fontheight; rows--; dest += p->next_line) {
*dest = (*dest == fg) ? bg : fg;
*(dest+1) = (*(dest + 1) == fg) ? bg : fg;
*(dest+2) = (*(dest + 2) == fg) ? bg : fg;
*(dest+3) = (*(dest + 3) == fg) ? bg : fg;
*(dest+4) = (*(dest + 4) == fg) ? bg : fg;
*(dest+5) = (*(dest + 5) == fg) ? bg : fg;
*(dest+6) = (*(dest + 6) == fg) ? bg : fg;
*(dest+7) = (*(dest + 7) == fg) ? bg : fg;
}
}
#ifdef MODULE
int init_module(void)
#else
int fbcon_init_cyber(void)
#endif
{
return(fbcon_register_driver(&dispsw_cyber, 1));
}
#ifdef MODULE
void cleanup_module(void)
{
fbcon_unregister_driver(&dispsw_cyber);
}
#endif /* MODULE */
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