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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware | |
3 | * | |
4 | * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> | |
5 | * Copyright (C) 2002 Helge Deller <deller@gmx.de> | |
6 | * | |
7 | * Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c, | |
8 | * which were | |
9 | * | |
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 | |
13 | * 1995 Jay Estabrook | |
14 | * Copyright (C) 1995 Geert Uytterhoeven | |
15 | * Copyright (C) 1993 Bjoern Brauel | |
16 | * Roman Hodek | |
17 | * Copyright (C) 1993 Hamish Macdonald | |
18 | * Greg Harp | |
19 | * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk] | |
20 | * | |
21 | * with work by William Rucklidge (wjr@cs.cornell.edu) | |
22 | * Geert Uytterhoeven | |
23 | * Jes Sorensen (jds@kom.auc.dk) | |
24 | * Martin Apel | |
25 | * with work by Guenther Kelleter | |
26 | * Martin Schaller | |
27 | * Andreas Schwab | |
28 | * Emmanuel Marty (core@ggi-project.org) | |
29 | * Jakub Jelinek (jj@ultra.linux.cz) | |
30 | * Martin Mares <mj@ucw.cz> | |
31 | * | |
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 | |
34 | * more details. | |
35 | * | |
36 | */ | |
37 | ||
38 | #include <linux/init.h> | |
39 | #include <linux/kernel.h> | |
1da177e4 LT |
40 | #include <linux/console.h> |
41 | #include <linux/errno.h> | |
42 | #include <linux/vt_kern.h> | |
43 | #include <linux/kd.h> | |
44 | #include <linux/selection.h> | |
45 | #include <linux/module.h> | |
46 | ||
47 | #include <asm/io.h> | |
48 | ||
f7018c21 | 49 | #include "../fbdev/sticore.h" |
1da177e4 LT |
50 | |
51 | /* switching to graphics mode */ | |
52 | #define BLANK 0 | |
53 | static int vga_is_gfx; | |
54 | ||
55 | /* this is the sti_struct used for this console */ | |
56 | static struct sti_struct *sticon_sti; | |
57 | ||
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; | |
63 | ||
64 | /* software cursor */ | |
65 | static int cursor_drawn; | |
66 | #define CURSOR_DRAW_DELAY (1) | |
67 | #define DEFAULT_CURSOR_BLINK_RATE (20) | |
68 | ||
69 | static int vbl_cursor_cnt; | |
70 | ||
71 | static inline void cursor_undrawn(void) | |
72 | { | |
73 | vbl_cursor_cnt = 0; | |
74 | cursor_drawn = 0; | |
75 | } | |
76 | ||
b877a964 | 77 | static const char *sticon_startup(void) |
1da177e4 LT |
78 | { |
79 | return "STI console"; | |
80 | } | |
81 | ||
1da177e4 LT |
82 | static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos) |
83 | { | |
84 | int redraw_cursor = 0; | |
85 | ||
86 | if (vga_is_gfx || console_blanked) | |
87 | return; | |
88 | ||
89 | if (conp->vc_mode != KD_TEXT) | |
90 | return; | |
91 | #if 0 | |
92 | if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) { | |
93 | cursor_undrawn(); | |
94 | redraw_cursor = 1; | |
95 | } | |
96 | #endif | |
97 | ||
98 | sti_putc(sticon_sti, c, ypos, xpos); | |
99 | ||
100 | if (redraw_cursor) | |
101 | vbl_cursor_cnt = CURSOR_DRAW_DELAY; | |
102 | } | |
103 | ||
104 | static void sticon_putcs(struct vc_data *conp, const unsigned short *s, | |
105 | int count, int ypos, int xpos) | |
106 | { | |
107 | int redraw_cursor = 0; | |
108 | ||
109 | if (vga_is_gfx || console_blanked) | |
110 | return; | |
111 | ||
112 | if (conp->vc_mode != KD_TEXT) | |
113 | return; | |
114 | ||
115 | #if 0 | |
116 | if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) && | |
117 | (p->cursor_x < (xpos + count))) { | |
118 | cursor_undrawn(); | |
119 | redraw_cursor = 1; | |
120 | } | |
121 | #endif | |
122 | ||
123 | while (count--) { | |
124 | sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++); | |
125 | } | |
126 | ||
127 | if (redraw_cursor) | |
128 | vbl_cursor_cnt = CURSOR_DRAW_DELAY; | |
129 | } | |
130 | ||
131 | static void sticon_cursor(struct vc_data *conp, int mode) | |
132 | { | |
133 | unsigned short car1; | |
134 | ||
135 | car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols]; | |
136 | switch (mode) { | |
137 | case CM_ERASE: | |
138 | sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x); | |
139 | break; | |
140 | case CM_MOVE: | |
141 | case CM_DRAW: | |
142 | switch (conp->vc_cursor_type & 0x0f) { | |
143 | case CUR_UNDERLINE: | |
144 | case CUR_LOWER_THIRD: | |
145 | case CUR_LOWER_HALF: | |
146 | case CUR_TWO_THIRDS: | |
147 | case CUR_BLOCK: | |
148 | sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11), | |
149 | conp->vc_y, conp->vc_x); | |
150 | break; | |
151 | } | |
152 | break; | |
153 | } | |
154 | } | |
155 | ||
d705ff38 JS |
156 | static bool sticon_scroll(struct vc_data *conp, unsigned int t, |
157 | unsigned int b, enum con_scroll dir, unsigned int count) | |
1da177e4 LT |
158 | { |
159 | struct sti_struct *sti = sticon_sti; | |
160 | ||
161 | if (vga_is_gfx) | |
d705ff38 | 162 | return false; |
1da177e4 LT |
163 | |
164 | sticon_cursor(conp, CM_ERASE); | |
165 | ||
166 | switch (dir) { | |
167 | case SM_UP: | |
168 | sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols); | |
93f78da4 | 169 | sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char); |
1da177e4 LT |
170 | break; |
171 | ||
172 | case SM_DOWN: | |
173 | sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols); | |
93f78da4 | 174 | sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char); |
1da177e4 LT |
175 | break; |
176 | } | |
177 | ||
d705ff38 | 178 | return false; |
1da177e4 LT |
179 | } |
180 | ||
1da177e4 LT |
181 | static void sticon_init(struct vc_data *c, int init) |
182 | { | |
183 | struct sti_struct *sti = sticon_sti; | |
184 | int vc_cols, vc_rows; | |
185 | ||
186 | sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0); | |
187 | vc_cols = sti_onscreen_x(sti) / sti->font_width; | |
188 | vc_rows = sti_onscreen_y(sti) / sti->font_height; | |
189 | c->vc_can_do_color = 1; | |
190 | ||
191 | if (init) { | |
192 | c->vc_cols = vc_cols; | |
193 | c->vc_rows = vc_rows; | |
194 | } else { | |
195 | /* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */ | |
196 | /* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */ | |
197 | vc_resize(c, vc_cols, vc_rows); | |
198 | /* vc_resize_con(vc_rows, vc_cols, c->vc_num); */ | |
199 | } | |
200 | } | |
201 | ||
202 | static void sticon_deinit(struct vc_data *c) | |
203 | { | |
204 | } | |
205 | ||
206 | static void sticon_clear(struct vc_data *conp, int sy, int sx, int height, | |
207 | int width) | |
208 | { | |
209 | if (!height || !width) | |
210 | return; | |
211 | ||
212 | sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char); | |
213 | } | |
214 | ||
215 | static int sticon_switch(struct vc_data *conp) | |
216 | { | |
217 | return 1; /* needs refreshing */ | |
218 | } | |
219 | ||
220 | static int sticon_set_origin(struct vc_data *conp) | |
221 | { | |
222 | return 0; | |
223 | } | |
224 | ||
225 | static int sticon_blank(struct vc_data *c, int blank, int mode_switch) | |
226 | { | |
227 | if (blank == 0) { | |
228 | if (mode_switch) | |
229 | vga_is_gfx = 0; | |
230 | return 1; | |
231 | } | |
232 | sticon_set_origin(c); | |
233 | sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK); | |
234 | if (mode_switch) | |
235 | vga_is_gfx = 1; | |
236 | return 1; | |
237 | } | |
238 | ||
1da177e4 LT |
239 | static u16 *sticon_screen_pos(struct vc_data *conp, int offset) |
240 | { | |
241 | int line; | |
242 | unsigned long p; | |
243 | ||
244 | if (conp->vc_num != fg_console || !softback_lines) | |
245 | return (u16 *)(conp->vc_origin + offset); | |
246 | line = offset / conp->vc_size_row; | |
247 | if (line >= softback_lines) | |
248 | return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row); | |
249 | p = softback_curr + offset; | |
250 | if (p >= softback_end) | |
251 | p += softback_buf - softback_end; | |
252 | return (u16 *)p; | |
253 | } | |
254 | ||
255 | static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos, | |
256 | int *px, int *py) | |
257 | { | |
258 | int x, y; | |
259 | unsigned long ret; | |
260 | if (pos >= conp->vc_origin && pos < conp->vc_scr_end) { | |
261 | unsigned long offset = (pos - conp->vc_origin) / 2; | |
262 | ||
263 | x = offset % conp->vc_cols; | |
264 | y = offset / conp->vc_cols; | |
265 | if (conp->vc_num == fg_console) | |
266 | y += softback_lines; | |
267 | ret = pos + (conp->vc_cols - x) * 2; | |
268 | } else if (conp->vc_num == fg_console && softback_lines) { | |
269 | unsigned long offset = pos - softback_curr; | |
270 | ||
271 | if (pos < softback_curr) | |
272 | offset += softback_end - softback_buf; | |
273 | offset /= 2; | |
274 | x = offset % conp->vc_cols; | |
275 | y = offset / conp->vc_cols; | |
276 | ret = pos + (conp->vc_cols - x) * 2; | |
277 | if (ret == softback_end) | |
278 | ret = softback_buf; | |
279 | if (ret == softback_in) | |
280 | ret = conp->vc_origin; | |
281 | } else { | |
282 | /* Should not happen */ | |
283 | x = y = 0; | |
284 | ret = conp->vc_origin; | |
285 | } | |
286 | if (px) *px = x; | |
287 | if (py) *py = y; | |
288 | return ret; | |
289 | } | |
290 | ||
291 | static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens, | |
fa6ce9ab | 292 | u8 blink, u8 underline, u8 reverse, u8 italic) |
1da177e4 LT |
293 | { |
294 | u8 attr = ((color & 0x70) >> 1) | ((color & 7)); | |
295 | ||
296 | if (reverse) { | |
297 | color = ((color >> 3) & 0x7) | ((color & 0x7) << 3); | |
298 | } | |
299 | ||
300 | return attr; | |
301 | } | |
302 | ||
303 | static void sticon_invert_region(struct vc_data *conp, u16 *p, int count) | |
304 | { | |
305 | int col = 1; /* vga_can_do_color; */ | |
306 | ||
307 | while (count--) { | |
308 | u16 a = scr_readw(p); | |
309 | ||
310 | if (col) | |
311 | a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4); | |
312 | else | |
313 | a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700; | |
314 | ||
315 | scr_writew(a, p++); | |
316 | } | |
317 | } | |
318 | ||
319 | static void sticon_save_screen(struct vc_data *conp) | |
320 | { | |
321 | } | |
322 | ||
d95159cf | 323 | static const struct consw sti_con = { |
1da177e4 LT |
324 | .owner = THIS_MODULE, |
325 | .con_startup = sticon_startup, | |
326 | .con_init = sticon_init, | |
327 | .con_deinit = sticon_deinit, | |
328 | .con_clear = sticon_clear, | |
329 | .con_putc = sticon_putc, | |
330 | .con_putcs = sticon_putcs, | |
331 | .con_cursor = sticon_cursor, | |
332 | .con_scroll = sticon_scroll, | |
1da177e4 LT |
333 | .con_switch = sticon_switch, |
334 | .con_blank = sticon_blank, | |
1da177e4 LT |
335 | .con_set_origin = sticon_set_origin, |
336 | .con_save_screen = sticon_save_screen, | |
337 | .con_build_attr = sticon_build_attr, | |
338 | .con_invert_region = sticon_invert_region, | |
339 | .con_screen_pos = sticon_screen_pos, | |
340 | .con_getxy = sticon_getxy, | |
341 | }; | |
342 | ||
343 | ||
344 | ||
3d1e412a | 345 | static int __init sticonsole_init(void) |
1da177e4 | 346 | { |
155957f5 | 347 | int err; |
1da177e4 LT |
348 | /* already initialized ? */ |
349 | if (sticon_sti) | |
350 | return 0; | |
351 | ||
352 | sticon_sti = sti_get_rom(0); | |
353 | if (!sticon_sti) | |
354 | return -ENODEV; | |
355 | ||
356 | if (conswitchp == &dummy_con) { | |
357 | printk(KERN_INFO "sticon: Initializing STI text console.\n"); | |
155957f5 WY |
358 | console_lock(); |
359 | err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1); | |
360 | console_unlock(); | |
361 | return err; | |
1da177e4 LT |
362 | } |
363 | return 0; | |
364 | } | |
365 | ||
366 | module_init(sticonsole_init); | |
367 | MODULE_LICENSE("GPL"); |