368 lines
8.7 KiB
C
Executable File
368 lines
8.7 KiB
C
Executable File
/*
|
|
* linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
|
|
*
|
|
* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
|
|
* Copyright (C) 2002 Helge Deller <deller@gmx.de>
|
|
*
|
|
* Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
|
|
* which were
|
|
*
|
|
* Created 28 Sep 1997 by Geert Uytterhoeven
|
|
* Rewritten by Martin Mares <mj@ucw.cz>, July 1998
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
* 1995 Jay Estabrook
|
|
* Copyright (C) 1995 Geert Uytterhoeven
|
|
* Copyright (C) 1993 Bjoern Brauel
|
|
* Roman Hodek
|
|
* Copyright (C) 1993 Hamish Macdonald
|
|
* Greg Harp
|
|
* Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
|
|
*
|
|
* with work by William Rucklidge (wjr@cs.cornell.edu)
|
|
* Geert Uytterhoeven
|
|
* Jes Sorensen (jds@kom.auc.dk)
|
|
* Martin Apel
|
|
* with work by Guenther Kelleter
|
|
* Martin Schaller
|
|
* Andreas Schwab
|
|
* Emmanuel Marty (core@ggi-project.org)
|
|
* Jakub Jelinek (jj@ultra.linux.cz)
|
|
* Martin Mares <mj@ucw.cz>
|
|
*
|
|
* 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/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/console.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/vt_kern.h>
|
|
#include <linux/kd.h>
|
|
#include <linux/selection.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
#include "../fbdev/sticore.h"
|
|
|
|
/* switching to graphics mode */
|
|
#define BLANK 0
|
|
static int vga_is_gfx;
|
|
|
|
/* this is the sti_struct used for this console */
|
|
static struct sti_struct *sticon_sti;
|
|
|
|
/* Software scrollback */
|
|
static unsigned long softback_buf, softback_curr;
|
|
static unsigned long softback_in;
|
|
static unsigned long /* softback_top, */ softback_end;
|
|
static int softback_lines;
|
|
|
|
/* software cursor */
|
|
static int cursor_drawn;
|
|
#define CURSOR_DRAW_DELAY (1)
|
|
#define DEFAULT_CURSOR_BLINK_RATE (20)
|
|
|
|
static int vbl_cursor_cnt;
|
|
|
|
static inline void cursor_undrawn(void)
|
|
{
|
|
vbl_cursor_cnt = 0;
|
|
cursor_drawn = 0;
|
|
}
|
|
|
|
static const char *sticon_startup(void)
|
|
{
|
|
return "STI console";
|
|
}
|
|
|
|
static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
|
|
{
|
|
int redraw_cursor = 0;
|
|
|
|
if (vga_is_gfx || console_blanked)
|
|
return;
|
|
|
|
if (conp->vc_mode != KD_TEXT)
|
|
return;
|
|
#if 0
|
|
if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
|
|
cursor_undrawn();
|
|
redraw_cursor = 1;
|
|
}
|
|
#endif
|
|
|
|
sti_putc(sticon_sti, c, ypos, xpos);
|
|
|
|
if (redraw_cursor)
|
|
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
|
|
}
|
|
|
|
static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
|
|
int count, int ypos, int xpos)
|
|
{
|
|
int redraw_cursor = 0;
|
|
|
|
if (vga_is_gfx || console_blanked)
|
|
return;
|
|
|
|
if (conp->vc_mode != KD_TEXT)
|
|
return;
|
|
|
|
#if 0
|
|
if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
|
|
(p->cursor_x < (xpos + count))) {
|
|
cursor_undrawn();
|
|
redraw_cursor = 1;
|
|
}
|
|
#endif
|
|
|
|
while (count--) {
|
|
sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
|
|
}
|
|
|
|
if (redraw_cursor)
|
|
vbl_cursor_cnt = CURSOR_DRAW_DELAY;
|
|
}
|
|
|
|
static void sticon_cursor(struct vc_data *conp, int mode)
|
|
{
|
|
unsigned short car1;
|
|
|
|
car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
|
|
switch (mode) {
|
|
case CM_ERASE:
|
|
sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
|
|
break;
|
|
case CM_MOVE:
|
|
case CM_DRAW:
|
|
switch (conp->vc_cursor_type & 0x0f) {
|
|
case CUR_UNDERLINE:
|
|
case CUR_LOWER_THIRD:
|
|
case CUR_LOWER_HALF:
|
|
case CUR_TWO_THIRDS:
|
|
case CUR_BLOCK:
|
|
sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
|
|
conp->vc_y, conp->vc_x);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static bool sticon_scroll(struct vc_data *conp, unsigned int t,
|
|
unsigned int b, enum con_scroll dir, unsigned int count)
|
|
{
|
|
struct sti_struct *sti = sticon_sti;
|
|
|
|
if (vga_is_gfx)
|
|
return false;
|
|
|
|
sticon_cursor(conp, CM_ERASE);
|
|
|
|
switch (dir) {
|
|
case SM_UP:
|
|
sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
|
|
sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
|
|
break;
|
|
|
|
case SM_DOWN:
|
|
sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
|
|
sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void sticon_init(struct vc_data *c, int init)
|
|
{
|
|
struct sti_struct *sti = sticon_sti;
|
|
int vc_cols, vc_rows;
|
|
|
|
sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
|
|
vc_cols = sti_onscreen_x(sti) / sti->font_width;
|
|
vc_rows = sti_onscreen_y(sti) / sti->font_height;
|
|
c->vc_can_do_color = 1;
|
|
|
|
if (init) {
|
|
c->vc_cols = vc_cols;
|
|
c->vc_rows = vc_rows;
|
|
} else {
|
|
/* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
|
|
/* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
|
|
vc_resize(c, vc_cols, vc_rows);
|
|
/* vc_resize_con(vc_rows, vc_cols, c->vc_num); */
|
|
}
|
|
}
|
|
|
|
static void sticon_deinit(struct vc_data *c)
|
|
{
|
|
}
|
|
|
|
static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
|
|
int width)
|
|
{
|
|
if (!height || !width)
|
|
return;
|
|
|
|
sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
|
|
}
|
|
|
|
static int sticon_switch(struct vc_data *conp)
|
|
{
|
|
return 1; /* needs refreshing */
|
|
}
|
|
|
|
static int sticon_set_origin(struct vc_data *conp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
|
|
{
|
|
if (blank == 0) {
|
|
if (mode_switch)
|
|
vga_is_gfx = 0;
|
|
return 1;
|
|
}
|
|
sticon_set_origin(c);
|
|
sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
|
|
if (mode_switch)
|
|
vga_is_gfx = 1;
|
|
return 1;
|
|
}
|
|
|
|
static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
|
|
{
|
|
int line;
|
|
unsigned long p;
|
|
|
|
if (conp->vc_num != fg_console || !softback_lines)
|
|
return (u16 *)(conp->vc_origin + offset);
|
|
line = offset / conp->vc_size_row;
|
|
if (line >= softback_lines)
|
|
return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
|
|
p = softback_curr + offset;
|
|
if (p >= softback_end)
|
|
p += softback_buf - softback_end;
|
|
return (u16 *)p;
|
|
}
|
|
|
|
static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
|
|
int *px, int *py)
|
|
{
|
|
int x, y;
|
|
unsigned long ret;
|
|
if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
|
|
unsigned long offset = (pos - conp->vc_origin) / 2;
|
|
|
|
x = offset % conp->vc_cols;
|
|
y = offset / conp->vc_cols;
|
|
if (conp->vc_num == fg_console)
|
|
y += softback_lines;
|
|
ret = pos + (conp->vc_cols - x) * 2;
|
|
} else if (conp->vc_num == fg_console && softback_lines) {
|
|
unsigned long offset = pos - softback_curr;
|
|
|
|
if (pos < softback_curr)
|
|
offset += softback_end - softback_buf;
|
|
offset /= 2;
|
|
x = offset % conp->vc_cols;
|
|
y = offset / conp->vc_cols;
|
|
ret = pos + (conp->vc_cols - x) * 2;
|
|
if (ret == softback_end)
|
|
ret = softback_buf;
|
|
if (ret == softback_in)
|
|
ret = conp->vc_origin;
|
|
} else {
|
|
/* Should not happen */
|
|
x = y = 0;
|
|
ret = conp->vc_origin;
|
|
}
|
|
if (px) *px = x;
|
|
if (py) *py = y;
|
|
return ret;
|
|
}
|
|
|
|
static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
|
|
u8 blink, u8 underline, u8 reverse, u8 italic)
|
|
{
|
|
u8 attr = ((color & 0x70) >> 1) | ((color & 7));
|
|
|
|
if (reverse) {
|
|
color = ((color >> 3) & 0x7) | ((color & 0x7) << 3);
|
|
}
|
|
|
|
return attr;
|
|
}
|
|
|
|
static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
|
|
{
|
|
int col = 1; /* vga_can_do_color; */
|
|
|
|
while (count--) {
|
|
u16 a = scr_readw(p);
|
|
|
|
if (col)
|
|
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
|
|
else
|
|
a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
|
|
|
|
scr_writew(a, p++);
|
|
}
|
|
}
|
|
|
|
static void sticon_save_screen(struct vc_data *conp)
|
|
{
|
|
}
|
|
|
|
static const struct consw sti_con = {
|
|
.owner = THIS_MODULE,
|
|
.con_startup = sticon_startup,
|
|
.con_init = sticon_init,
|
|
.con_deinit = sticon_deinit,
|
|
.con_clear = sticon_clear,
|
|
.con_putc = sticon_putc,
|
|
.con_putcs = sticon_putcs,
|
|
.con_cursor = sticon_cursor,
|
|
.con_scroll = sticon_scroll,
|
|
.con_switch = sticon_switch,
|
|
.con_blank = sticon_blank,
|
|
.con_set_origin = sticon_set_origin,
|
|
.con_save_screen = sticon_save_screen,
|
|
.con_build_attr = sticon_build_attr,
|
|
.con_invert_region = sticon_invert_region,
|
|
.con_screen_pos = sticon_screen_pos,
|
|
.con_getxy = sticon_getxy,
|
|
};
|
|
|
|
|
|
|
|
static int __init sticonsole_init(void)
|
|
{
|
|
int err;
|
|
/* already initialized ? */
|
|
if (sticon_sti)
|
|
return 0;
|
|
|
|
sticon_sti = sti_get_rom(0);
|
|
if (!sticon_sti)
|
|
return -ENODEV;
|
|
|
|
if (conswitchp == &dummy_con) {
|
|
printk(KERN_INFO "sticon: Initializing STI text console.\n");
|
|
console_lock();
|
|
err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
|
|
console_unlock();
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
module_init(sticonsole_init);
|
|
MODULE_LICENSE("GPL");
|