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/*
* linux/drivers/video/sticon.c - console driver using HP's STI firmware
*
* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
*
* 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.
*/
/*
* TODO:
* - call STI in virtual mode rather than in real mode
* - support for PCI-only STI ROMs (which don't have a traditional region
* list)
* - safe detection (i.e. verify there is a graphics device at a given
* address first, not just read a random device's io space)
* - support for multiple STI devices in one machine
* - support for byte-mode STI ROMs
* - support for just using STI to switch to a colour fb (stifb ?)
* - try to make it work on m68k hp workstations ;)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/console_struct.h>
#include <linux/errno.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
#include <asm/io.h>
#include "sti.h"
/* STICON */
static const char * __init
sticon_startup(void)
{
return "STI console";
}
static int
sticon_set_palette(struct vc_data *c, unsigned char *table)
{
return -EINVAL;
}
static int
sticon_font_op(struct vc_data *c, struct console_font_op *op)
{
return -ENOSYS;
}
static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
{
sti_putc(&default_sti, c, ypos, xpos);
}
static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
int count, int ypos, int xpos)
{
while(count--) {
sti_putc(&default_sti, scr_readw(s++), ypos, xpos++);
}
}
static void sticon_cursor(struct vc_data *conp, int mode)
{
}
static int sticon_scroll(struct vc_data *conp, int t, int b, int dir,
int count)
{
struct sti_struct *sti = &default_sti;
if(console_blanked)
return 0;
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);
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);
break;
}
return 0;
}
static void sticon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
int height, int width)
{
sti_bmove(&default_sti, sy, sx, dy, dx, height, width);
}
static void sticon_init(struct vc_data *c, int init)
{
struct sti_struct *sti = &default_sti;
int vc_cols, vc_rows;
sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
c->vc_can_do_color = 1;
vc_cols = PTR_STI(sti->glob_cfg)->onscreen_x / sti_font_x(sti);
vc_rows = PTR_STI(sti->glob_cfg)->onscreen_y / sti_font_y(sti);
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)
{
sti_clear(&default_sti, sy, sx, height, width);
}
static int sticon_switch(struct vc_data *conp)
{
return 0;
}
static int sticon_blank(struct vc_data *conp, int blank)
{
return 0;
}
static int sticon_scrolldelta(struct vc_data *conp, int lines)
{
return 0;
}
static int sticon_set_origin(struct vc_data *conp)
{
return 0;
}
static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens, u8 blink, u8 underline, u8 reverse)
{
u8 attr = ((color & 0x70) >> 1) | ((color & 7));
if(reverse) {
color = ((color>>3)&0x7) | ((color &0x7)<<3);
}
return attr;
}
struct consw sti_con = {
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_bmove: sticon_bmove,
con_switch: sticon_switch,
con_blank: sticon_blank,
con_font_op: sticon_font_op,
con_set_palette: sticon_set_palette,
con_scrolldelta: sticon_scrolldelta,
con_set_origin: sticon_set_origin,
con_build_attr: sticon_build_attr,
};
static int __init sti_init(void)
{
printk("searching for word mode STI ROMs\n");
if (sti_init_roms()) {
pdc_console_die();
take_over_console(&sti_con, 0, MAX_NR_CONSOLES-1, 1);
return 0;
} else
return -ENODEV;
}
module_init(sti_init)
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