patch-2.1.110 linux/drivers/video/compatcon.c

• Lines: 333
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.109/linux/drivers/video/compatcon.c
• Orig date: Thu Jul 16 18:09:27 1998

diff -u --recursive --new-file v2.1.109/linux/drivers/video/compatcon.c linux/drivers/video/compatcon.c
@@ -1,332 +0,0 @@
-/*
- *  linux/drivers/video/compatcon.c -- Console wrapper
- *
- *	Created 26 Apr 1998 by Geert Uytterhoeven
- *
- *  This will be removed once there are frame buffer devices for all supported
- *  graphics hardware
- *
- *  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/types.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/tty.h>
-#include <linux/console.h>
-#include <linux/console_struct.h>
-#include <linux/string.h>
-#include <linux/kd.h>
-#include <linux/malloc.h>
-#include <linux/vt_kern.h>
-#include <linux/selection.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/linux_logo.h>
-
-#include <linux/console_compat.h>
-
-
-    /*
-     *  Interface used by the world
-     */
-
-static const char *compatcon_startup(void);
-static void compatcon_init(struct vc_data *conp);
-static void compatcon_deinit(struct vc_data *conp);
-static void compatcon_clear(struct vc_data *conp, int sy, int sx, int height,
-			    int width);
-static void compatcon_putc(struct vc_data *conp, int c, int ypos, int xpos);
-static void compatcon_putcs(struct vc_data *conp, const unsigned short *s, int count,
-			    int ypos, int xpos);
-static void compatcon_cursor(struct vc_data *conp, int mode);
-static int compatcon_scroll(struct vc_data *conp, int t, int b, int dir,
-			    int count);
-static void compatcon_bmove(struct vc_data *conp, int sy, int sx, int dy,
-			    int dx, int height, int width);
-static int compatcon_switch(struct vc_data *conp);
-static int compatcon_blank(int blank);
-static int compatcon_get_font(struct vc_data *conp, int *w, int *h, char *data);
-static int compatcon_set_font(struct vc_data *conp, int w, int h, char *data);
-static int compatcon_set_palette(struct vc_data *conp, unsigned char *table);
-static int compatcon_scrolldelta(struct vc_data *conp, int lines);
-
-
-    /*
-     *  Internal routines
-     */
-
-unsigned long video_num_columns;
-unsigned long video_num_lines;
-unsigned long video_size_row;
-unsigned char video_type;
-unsigned long video_mem_base;
-unsigned long video_mem_term;
-unsigned long video_screen_size;
-int can_do_color;
-
-extern void set_cursor(int currcons);
-extern void hide_cursor(void);
-extern int set_get_cmap(unsigned char *arg, int set);
-extern void set_palette(void);
-extern int set_get_font(unsigned char *arg, int set, int ch512);
-extern void set_vesa_blanking(unsigned long arg);
-extern void vesa_blank(void);
-extern void vesa_powerdown(void);
-extern int con_adjust_height(unsigned long fontheight);
-extern void con_type_init(const char **);
-extern void con_type_init_finish(void);
-
-#define BLANK	0x0020
-
-
-__initfunc(static const char *compatcon_startup(void))
-{
-    const char *display_desc = "????";
-
-    video_num_lines = ORIG_VIDEO_LINES;
-    video_num_columns = ORIG_VIDEO_COLS;
-    video_size_row = 2*video_num_columns;
-    video_screen_size = video_num_lines*video_size_row;
-
-    con_type_init(&display_desc);
-    return display_desc;
-}
-
-
-static void compatcon_init(struct vc_data *conp)
-{
-    static int first = 1;
-
-    conp->vc_cols = video_num_columns;
-    conp->vc_rows = video_num_lines;
-    conp->vc_can_do_color = can_do_color;
-    if (first) {
-	con_type_init_finish();
-	first = 0;
-    }
-}
-
-static void compatcon_deinit(struct vc_data *conp)
-{
-}
-
-
-static void compatcon_clear(struct vc_data *conp, int sy, int sx, int height,
-			    int width)
-{
-    int rows;
-    unsigned long dest;
-
-    if (console_blanked)
-	return;
-
-    dest = video_mem_base+sy*video_size_row+sx*2;
-    if (sx == 0 && width == video_num_columns)      
-	memsetw((void *)dest, conp->vc_video_erase_char, height*video_size_row);
-    else
-	for (rows = height; rows-- ; dest += video_size_row)
-	    memsetw((void *)dest, conp->vc_video_erase_char, width*2);
-}
-
-
-static void compatcon_putc(struct vc_data *conp, int c, int ypos, int xpos)
-{
-    u16 *p;
-
-    if (console_blanked)
-	return;
-
-    p = (u16 *)(video_mem_base+ypos*video_size_row+xpos*2);
-    scr_writew(c, p);
-}
-
-
-static void compatcon_putcs(struct vc_data *conp, const unsigned short *s, int count,
-			    int ypos, int xpos)
-{
-    u16 *p;
-    u16 sattr;
-
-    if (console_blanked)
-	return;
-
-    p = (u16 *)(video_mem_base+ypos*video_size_row+xpos*2);
-    while (count--)
-	scr_writew(*s++, p++);
-}
-
-
-static void compatcon_cursor(struct vc_data *conp, int mode)
-{
-    switch (mode) {
-	case CM_ERASE:
-	    hide_cursor();
-	    break;
-
-	case CM_MOVE:
-	case CM_DRAW:
-	    set_cursor(conp->vc_num);
-	    break;
-    }
-}
-
-
-static int compatcon_scroll(struct vc_data *conp, int t, int b, int dir,
-			    int count)
-{
-    if (console_blanked)
-	return 0;
-
-    compatcon_cursor(conp, CM_ERASE);
-
-    switch (dir) {
-	case SM_UP:
-	    if (count > conp->vc_rows)	/* Maximum realistic size */
-		count = conp->vc_rows;
-	    compatcon_bmove(conp, t+count, 0, t, 0, b-t-count, conp->vc_cols);
-	    compatcon_clear(conp, b-count, 0, count, conp->vc_cols);
-	    break;
-
-	case SM_DOWN:
-	    if (count > conp->vc_rows)	/* Maximum realistic size */
-		count = conp->vc_rows;
-	    /*
-	     *  Fixed bmove() should end Arno's frustration with copying?
-	     *  Confucius says:
-	     *	Man who copies in wrong direction, end up with trashed
-	     *	data
-	     */
-	    compatcon_bmove(conp, t, 0, t+count, 0, b-t-count, conp->vc_cols);
-	    compatcon_clear(conp, t, 0, count, conp->vc_cols);
-	    break;
-
-	case SM_LEFT:
-	    compatcon_bmove(conp, 0, t+count, 0, t, conp->vc_rows, b-t-count);
-	    compatcon_clear(conp, 0, b-count, conp->vc_rows, count);
-	    break;
-
-	case SM_RIGHT:
-	    compatcon_bmove(conp, 0, t, 0, t+count, conp->vc_rows, b-t-count);
-	    compatcon_clear(conp, 0, t, conp->vc_rows, count);
-	    break;
-    }
-    return 0;
-}
-
-
-static inline void memmovew(u16 *to, u16 *from, unsigned int count)
-{
-    if ((unsigned long)to < (unsigned long)from)
-	memcpyw(to, from, count);
-    else {
-	count /= 2;
-	to += count;
-	from += count;
-	while (count) {
-	    count--;
-	    scr_writew(scr_readw(--from), --to);
-	}
-    }
-}
-
-static void compatcon_bmove(struct vc_data *conp, int sy, int sx, int dy,
-			    int dx, int height, int width)
-{
-    unsigned long src, dst;
-    int rows;
-
-    if (console_blanked)
-	return;
-
-    if (sx == 0 && dx == 0 && width == video_num_columns) {
-	src = video_mem_base+sy*video_size_row;
-	dst = video_mem_base+dy*video_size_row;
-	memmovew((u16 *)dst, (u16 *)src, height*video_size_row);
-    } else if (dy < sy || (dy == sy && dx < sx)) {
-	src = video_mem_base+sy*video_size_row+sx*2;
-	dst = video_mem_base+dy*video_size_row+dx*2;
-	for (rows = height; rows-- ;) {
-	    memmovew((u16 *)dst, (u16 *)src, width*2);
-	    src += video_size_row;
-	    dst += video_size_row;
-	}
-    } else {
-	src = video_mem_base+(sy+height-1)*video_size_row+sx*2;
-	dst = video_mem_base+(dy+height-1)*video_size_row+dx*2;
-	for (rows = height; rows-- ;) {
-	    memmovew((u16 *)dst, (u16 *)src, width*2);
-	    src -= video_size_row;
-	    dst -= video_size_row;
-	}
-    }
-}
-
-
-static int compatcon_switch(struct vc_data *conp)
-{
-    return 1;
-}
-
-
-static int compatcon_blank(int blank)
-{
-    if (blank) {
-	set_vesa_blanking(blank-1);
-	if (blank-1 == 0)
-	    vesa_blank();
-	else
-	    vesa_powerdown();
-	return 0;
-    } else {
-	/* Tell console.c that it has to restore the screen itself */
-	return 1;
-    }
-    return 0;
-}
-
-
-static int compatcon_get_font(struct vc_data *conp, int *w, int *h, char *data)
-{
-    /* this is not supported: data already points to a kernel space copy */
-    return -ENOSYS;
-}
-
-
-static int compatcon_set_font(struct vc_data *conp, int w, int h, char *data)
-{
-    /* this is not supported: data already points to a kernel space copy */
-    return -ENOSYS;
-}
-
-static int compatcon_set_palette(struct vc_data *conp, unsigned char *table)
-{
-    if (console_blanked || vt_cons[fg_console]->vc_mode == KD_GRAPHICS)
-	return -EINVAL;
-    set_palette();
-    return 0;
-}
-
-static int compatcon_scrolldelta(struct vc_data *conp, int lines)
-{
-    /* TODO */
-    return -ENOSYS;
-}
-
-    /*
-     *  The console `switch' structure for the console wrapper
-     */
-
-struct consw compat_con = {
-    compatcon_startup, compatcon_init, compatcon_deinit, compatcon_clear,
-    compatcon_putc, compatcon_putcs, compatcon_cursor, compatcon_scroll,
-    compatcon_bmove, compatcon_switch, compatcon_blank, compatcon_get_font,
-    compatcon_set_font, compatcon_set_palette, compatcon_scrolldelta,
-    NULL, NULL
-};