2 * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
4 * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
5 * Copyright (C) 2002 Helge Deller <deller@gmx.de>
7 * Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
10 * Created 28 Sep 1997 by Geert Uytterhoeven
11 * Rewritten by Martin Mares <mj@ucw.cz>, July 1998
12 * Copyright (C) 1991, 1992 Linus Torvalds
14 * Copyright (C) 1995 Geert Uytterhoeven
15 * Copyright (C) 1993 Bjoern Brauel
17 * Copyright (C) 1993 Hamish Macdonald
19 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
21 * with work by William Rucklidge (wjr@cs.cornell.edu)
23 * Jes Sorensen (jds@kom.auc.dk)
25 * with work by Guenther Kelleter
28 * Emmanuel Marty (core@ggi-project.org)
29 * Jakub Jelinek (jj@ultra.linux.cz)
30 * Martin Mares <mj@ucw.cz>
32 * This file is subject to the terms and conditions of the GNU General Public
33 * License. See the file COPYING in the main directory of this archive for
38 #include <linux/init.h>
39 #include <linux/kernel.h>
40 #include <linux/console.h>
41 #include <linux/errno.h>
42 #include <linux/vt_kern.h>
44 #include <linux/selection.h>
45 #include <linux/module.h>
49 #include "../sticore.h"
51 /* switching to graphics mode */
53 static int vga_is_gfx;
55 /* this is the sti_struct used for this console */
56 static struct sti_struct *sticon_sti;
58 /* Software scrollback */
59 static unsigned long softback_buf, softback_curr;
60 static unsigned long softback_in;
61 static unsigned long /* softback_top, */ softback_end;
62 static int softback_lines;
65 static int cursor_drawn;
66 #define CURSOR_DRAW_DELAY (1)
67 #define DEFAULT_CURSOR_BLINK_RATE (20)
69 static int vbl_cursor_cnt;
71 static inline void cursor_undrawn(void)
77 static const char *sticon_startup(void)
82 static int sticon_set_palette(struct vc_data *c, unsigned char *table)
87 static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
89 int redraw_cursor = 0;
91 if (vga_is_gfx || console_blanked)
94 if (conp->vc_mode != KD_TEXT)
97 if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
103 sti_putc(sticon_sti, c, ypos, xpos);
106 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
109 static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
110 int count, int ypos, int xpos)
112 int redraw_cursor = 0;
114 if (vga_is_gfx || console_blanked)
117 if (conp->vc_mode != KD_TEXT)
121 if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
122 (p->cursor_x < (xpos + count))) {
129 sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
133 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
136 static void sticon_cursor(struct vc_data *conp, int mode)
140 car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
143 sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
147 switch (conp->vc_cursor_type & 0x0f) {
149 case CUR_LOWER_THIRD:
153 sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
154 conp->vc_y, conp->vc_x);
161 static int sticon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
163 struct sti_struct *sti = sticon_sti;
168 sticon_cursor(conp, CM_ERASE);
172 sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
173 sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
177 sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
178 sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
185 static void sticon_bmove(struct vc_data *conp, int sy, int sx,
186 int dy, int dx, int height, int width)
188 if (!width || !height)
191 if (((sy <= p->cursor_y) && (p->cursor_y < sy+height) &&
192 (sx <= p->cursor_x) && (p->cursor_x < sx+width)) ||
193 ((dy <= p->cursor_y) && (p->cursor_y < dy+height) &&
194 (dx <= p->cursor_x) && (p->cursor_x < dx+width)))
195 sticon_cursor(p, CM_ERASE /*|CM_SOFTBACK*/);
198 sti_bmove(sticon_sti, sy, sx, dy, dx, height, width);
201 static void sticon_init(struct vc_data *c, int init)
203 struct sti_struct *sti = sticon_sti;
204 int vc_cols, vc_rows;
206 sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
207 vc_cols = sti_onscreen_x(sti) / sti->font_width;
208 vc_rows = sti_onscreen_y(sti) / sti->font_height;
209 c->vc_can_do_color = 1;
212 c->vc_cols = vc_cols;
213 c->vc_rows = vc_rows;
215 /* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
216 /* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
217 vc_resize(c, vc_cols, vc_rows);
218 /* vc_resize_con(vc_rows, vc_cols, c->vc_num); */
222 static void sticon_deinit(struct vc_data *c)
226 static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
229 if (!height || !width)
232 sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
235 static int sticon_switch(struct vc_data *conp)
237 return 1; /* needs refreshing */
240 static int sticon_set_origin(struct vc_data *conp)
245 static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
252 sticon_set_origin(c);
253 sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
259 static int sticon_scrolldelta(struct vc_data *conp, int lines)
264 static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
269 if (conp->vc_num != fg_console || !softback_lines)
270 return (u16 *)(conp->vc_origin + offset);
271 line = offset / conp->vc_size_row;
272 if (line >= softback_lines)
273 return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
274 p = softback_curr + offset;
275 if (p >= softback_end)
276 p += softback_buf - softback_end;
280 static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
285 if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
286 unsigned long offset = (pos - conp->vc_origin) / 2;
288 x = offset % conp->vc_cols;
289 y = offset / conp->vc_cols;
290 if (conp->vc_num == fg_console)
292 ret = pos + (conp->vc_cols - x) * 2;
293 } else if (conp->vc_num == fg_console && softback_lines) {
294 unsigned long offset = pos - softback_curr;
296 if (pos < softback_curr)
297 offset += softback_end - softback_buf;
299 x = offset % conp->vc_cols;
300 y = offset / conp->vc_cols;
301 ret = pos + (conp->vc_cols - x) * 2;
302 if (ret == softback_end)
304 if (ret == softback_in)
305 ret = conp->vc_origin;
307 /* Should not happen */
309 ret = conp->vc_origin;
316 static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
317 u8 blink, u8 underline, u8 reverse, u8 italic)
319 u8 attr = ((color & 0x70) >> 1) | ((color & 7));
322 color = ((color >> 3) & 0x7) | ((color & 0x7) << 3);
328 static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
330 int col = 1; /* vga_can_do_color; */
333 u16 a = scr_readw(p);
336 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
338 a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
344 static void sticon_save_screen(struct vc_data *conp)
348 static const struct consw sti_con = {
349 .owner = THIS_MODULE,
350 .con_startup = sticon_startup,
351 .con_init = sticon_init,
352 .con_deinit = sticon_deinit,
353 .con_clear = sticon_clear,
354 .con_putc = sticon_putc,
355 .con_putcs = sticon_putcs,
356 .con_cursor = sticon_cursor,
357 .con_scroll = sticon_scroll,
358 .con_bmove = sticon_bmove,
359 .con_switch = sticon_switch,
360 .con_blank = sticon_blank,
361 .con_set_palette = sticon_set_palette,
362 .con_scrolldelta = sticon_scrolldelta,
363 .con_set_origin = sticon_set_origin,
364 .con_save_screen = sticon_save_screen,
365 .con_build_attr = sticon_build_attr,
366 .con_invert_region = sticon_invert_region,
367 .con_screen_pos = sticon_screen_pos,
368 .con_getxy = sticon_getxy,
373 static int __init sticonsole_init(void)
375 /* already initialized ? */
379 sticon_sti = sti_get_rom(0);
383 if (conswitchp == &dummy_con) {
384 printk(KERN_INFO "sticon: Initializing STI text console.\n");
385 return take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
390 module_init(sticonsole_init);
391 MODULE_LICENSE("GPL");