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