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/tty.h>
41 #include <linux/console.h>
42 #include <linux/errno.h>
43 #include <linux/vt_kern.h>
45 #include <linux/selection.h>
46 #include <linux/module.h>
50 #include "../sticore.h"
52 /* switching to graphics mode */
54 static int vga_is_gfx;
56 /* this is the sti_struct used for this console */
57 static struct sti_struct *sticon_sti;
59 /* Software scrollback */
60 static unsigned long softback_buf, softback_curr;
61 static unsigned long softback_in;
62 static unsigned long /* softback_top, */ softback_end;
63 static int softback_lines;
66 static int cursor_drawn;
67 #define CURSOR_DRAW_DELAY (1)
68 #define DEFAULT_CURSOR_BLINK_RATE (20)
70 static int vbl_cursor_cnt;
72 static inline void cursor_undrawn(void)
78 static const char *__init sticon_startup(void)
83 static int sticon_set_palette(struct vc_data *c, unsigned char *table)
88 static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
90 int redraw_cursor = 0;
92 if (vga_is_gfx || console_blanked)
95 if (conp->vc_mode != KD_TEXT)
98 if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
104 sti_putc(sticon_sti, c, ypos, xpos);
107 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
110 static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
111 int count, int ypos, int xpos)
113 int redraw_cursor = 0;
115 if (vga_is_gfx || console_blanked)
118 if (conp->vc_mode != KD_TEXT)
122 if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
123 (p->cursor_x < (xpos + count))) {
130 sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
134 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
137 static void sticon_cursor(struct vc_data *conp, int mode)
141 car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
144 sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
148 switch (conp->vc_cursor_type & 0x0f) {
150 case CUR_LOWER_THIRD:
154 sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
155 conp->vc_y, conp->vc_x);
162 static int sticon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
164 struct sti_struct *sti = sticon_sti;
169 sticon_cursor(conp, CM_ERASE);
173 sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
174 sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
178 sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
179 sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
186 static void sticon_bmove(struct vc_data *conp, int sy, int sx,
187 int dy, int dx, int height, int width)
189 if (!width || !height)
192 if (((sy <= p->cursor_y) && (p->cursor_y < sy+height) &&
193 (sx <= p->cursor_x) && (p->cursor_x < sx+width)) ||
194 ((dy <= p->cursor_y) && (p->cursor_y < dy+height) &&
195 (dx <= p->cursor_x) && (p->cursor_x < dx+width)))
196 sticon_cursor(p, CM_ERASE /*|CM_SOFTBACK*/);
199 sti_bmove(sticon_sti, sy, sx, dy, dx, height, width);
202 static void sticon_init(struct vc_data *c, int init)
204 struct sti_struct *sti = sticon_sti;
205 int vc_cols, vc_rows;
207 sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
208 vc_cols = sti_onscreen_x(sti) / sti->font_width;
209 vc_rows = sti_onscreen_y(sti) / sti->font_height;
210 c->vc_can_do_color = 1;
213 c->vc_cols = vc_cols;
214 c->vc_rows = vc_rows;
216 /* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
217 /* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
218 vc_resize(c, vc_cols, vc_rows);
219 /* vc_resize_con(vc_rows, vc_cols, c->vc_num); */
223 static void sticon_deinit(struct vc_data *c)
227 static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
230 if (!height || !width)
233 sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
236 static int sticon_switch(struct vc_data *conp)
238 return 1; /* needs refreshing */
241 static int sticon_set_origin(struct vc_data *conp)
246 static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
253 sticon_set_origin(c);
254 sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
260 static int sticon_scrolldelta(struct vc_data *conp, int lines)
265 static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
270 if (conp->vc_num != fg_console || !softback_lines)
271 return (u16 *)(conp->vc_origin + offset);
272 line = offset / conp->vc_size_row;
273 if (line >= softback_lines)
274 return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
275 p = softback_curr + offset;
276 if (p >= softback_end)
277 p += softback_buf - softback_end;
281 static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
286 if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
287 unsigned long offset = (pos - conp->vc_origin) / 2;
289 x = offset % conp->vc_cols;
290 y = offset / conp->vc_cols;
291 if (conp->vc_num == fg_console)
293 ret = pos + (conp->vc_cols - x) * 2;
294 } else if (conp->vc_num == fg_console && softback_lines) {
295 unsigned long offset = pos - softback_curr;
297 if (pos < softback_curr)
298 offset += softback_end - softback_buf;
300 x = offset % conp->vc_cols;
301 y = offset / conp->vc_cols;
302 ret = pos + (conp->vc_cols - x) * 2;
303 if (ret == softback_end)
305 if (ret == softback_in)
306 ret = conp->vc_origin;
308 /* Should not happen */
310 ret = conp->vc_origin;
317 static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
318 u8 blink, u8 underline, u8 reverse)
320 u8 attr = ((color & 0x70) >> 1) | ((color & 7));
323 color = ((color >> 3) & 0x7) | ((color & 0x7) << 3);
329 static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
331 int col = 1; /* vga_can_do_color; */
334 u16 a = scr_readw(p);
337 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
339 a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
345 static void sticon_save_screen(struct vc_data *conp)
349 static struct consw sti_con = {
350 .owner = THIS_MODULE,
351 .con_startup = sticon_startup,
352 .con_init = sticon_init,
353 .con_deinit = sticon_deinit,
354 .con_clear = sticon_clear,
355 .con_putc = sticon_putc,
356 .con_putcs = sticon_putcs,
357 .con_cursor = sticon_cursor,
358 .con_scroll = sticon_scroll,
359 .con_bmove = sticon_bmove,
360 .con_switch = sticon_switch,
361 .con_blank = sticon_blank,
362 .con_set_palette = sticon_set_palette,
363 .con_scrolldelta = sticon_scrolldelta,
364 .con_set_origin = sticon_set_origin,
365 .con_save_screen = sticon_save_screen,
366 .con_build_attr = sticon_build_attr,
367 .con_invert_region = sticon_invert_region,
368 .con_screen_pos = sticon_screen_pos,
369 .con_getxy = sticon_getxy,
374 int __init sticonsole_init(void)
376 /* already initialized ? */
380 sticon_sti = sti_get_rom(0);
384 if (conswitchp == &dummy_con) {
385 printk(KERN_INFO "sticon: Initializing STI text console.\n");
386 return take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
391 module_init(sticonsole_init);
392 MODULE_LICENSE("GPL");