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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>
43#include <linux/kd.h>
44#include <linux/selection.h>
45#include <linux/module.h>
46
47#include <asm/io.h>
48
49#include "../sticore.h"
50
51
52#define BLANK 0
53static int vga_is_gfx;
54
55
56static struct sti_struct *sticon_sti;
57
58
59static unsigned long softback_buf, softback_curr;
60static unsigned long softback_in;
61static unsigned long softback_end;
62static int softback_lines;
63
64
65static int cursor_drawn;
66#define CURSOR_DRAW_DELAY (1)
67#define DEFAULT_CURSOR_BLINK_RATE (20)
68
69static int vbl_cursor_cnt;
70
71static inline void cursor_undrawn(void)
72{
73 vbl_cursor_cnt = 0;
74 cursor_drawn = 0;
75}
76
77static const char *sticon_startup(void)
78{
79 return "STI console";
80}
81
82static int sticon_set_palette(struct vc_data *c, unsigned char *table)
83{
84 return -EINVAL;
85}
86
87static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
88{
89 int redraw_cursor = 0;
90
91 if (vga_is_gfx || console_blanked)
92 return;
93
94 if (conp->vc_mode != KD_TEXT)
95 return;
96#if 0
97 if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
98 cursor_undrawn();
99 redraw_cursor = 1;
100 }
101#endif
102
103 sti_putc(sticon_sti, c, ypos, xpos);
104
105 if (redraw_cursor)
106 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
107}
108
109static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
110 int count, int ypos, int xpos)
111{
112 int redraw_cursor = 0;
113
114 if (vga_is_gfx || console_blanked)
115 return;
116
117 if (conp->vc_mode != KD_TEXT)
118 return;
119
120#if 0
121 if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
122 (p->cursor_x < (xpos + count))) {
123 cursor_undrawn();
124 redraw_cursor = 1;
125 }
126#endif
127
128 while (count--) {
129 sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
130 }
131
132 if (redraw_cursor)
133 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
134}
135
136static void sticon_cursor(struct vc_data *conp, int mode)
137{
138 unsigned short car1;
139
140 car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
141 switch (mode) {
142 case CM_ERASE:
143 sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
144 break;
145 case CM_MOVE:
146 case CM_DRAW:
147 switch (conp->vc_cursor_type & 0x0f) {
148 case CUR_UNDERLINE:
149 case CUR_LOWER_THIRD:
150 case CUR_LOWER_HALF:
151 case CUR_TWO_THIRDS:
152 case CUR_BLOCK:
153 sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
154 conp->vc_y, conp->vc_x);
155 break;
156 }
157 break;
158 }
159}
160
161static int sticon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
162{
163 struct sti_struct *sti = sticon_sti;
164
165 if (vga_is_gfx)
166 return 0;
167
168 sticon_cursor(conp, CM_ERASE);
169
170 switch (dir) {
171 case SM_UP:
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);
174 break;
175
176 case SM_DOWN:
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);
179 break;
180 }
181
182 return 0;
183}
184
185static void sticon_bmove(struct vc_data *conp, int sy, int sx,
186 int dy, int dx, int height, int width)
187{
188 if (!width || !height)
189 return;
190#if 0
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 );
196#endif
197
198 sti_bmove(sticon_sti, sy, sx, dy, dx, height, width);
199}
200
201static void sticon_init(struct vc_data *c, int init)
202{
203 struct sti_struct *sti = sticon_sti;
204 int vc_cols, vc_rows;
205
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;
210
211 if (init) {
212 c->vc_cols = vc_cols;
213 c->vc_rows = vc_rows;
214 } else {
215
216
217 vc_resize(c, vc_cols, vc_rows);
218
219 }
220}
221
222static void sticon_deinit(struct vc_data *c)
223{
224}
225
226static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
227 int width)
228{
229 if (!height || !width)
230 return;
231
232 sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
233}
234
235static int sticon_switch(struct vc_data *conp)
236{
237 return 1;
238}
239
240static int sticon_set_origin(struct vc_data *conp)
241{
242 return 0;
243}
244
245static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
246{
247 if (blank == 0) {
248 if (mode_switch)
249 vga_is_gfx = 0;
250 return 1;
251 }
252 sticon_set_origin(c);
253 sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
254 if (mode_switch)
255 vga_is_gfx = 1;
256 return 1;
257}
258
259static int sticon_scrolldelta(struct vc_data *conp, int lines)
260{
261 return 0;
262}
263
264static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
265{
266 int line;
267 unsigned long p;
268
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;
277 return (u16 *)p;
278}
279
280static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
281 int *px, int *py)
282{
283 int x, y;
284 unsigned long ret;
285 if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
286 unsigned long offset = (pos - conp->vc_origin) / 2;
287
288 x = offset % conp->vc_cols;
289 y = offset / conp->vc_cols;
290 if (conp->vc_num == fg_console)
291 y += softback_lines;
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;
295
296 if (pos < softback_curr)
297 offset += softback_end - softback_buf;
298 offset /= 2;
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)
303 ret = softback_buf;
304 if (ret == softback_in)
305 ret = conp->vc_origin;
306 } else {
307
308 x = y = 0;
309 ret = conp->vc_origin;
310 }
311 if (px) *px = x;
312 if (py) *py = y;
313 return ret;
314}
315
316static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
317 u8 blink, u8 underline, u8 reverse, u8 italic)
318{
319 u8 attr = ((color & 0x70) >> 1) | ((color & 7));
320
321 if (reverse) {
322 color = ((color >> 3) & 0x7) | ((color & 0x7) << 3);
323 }
324
325 return attr;
326}
327
328static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
329{
330 int col = 1;
331
332 while (count--) {
333 u16 a = scr_readw(p);
334
335 if (col)
336 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
337 else
338 a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
339
340 scr_writew(a, p++);
341 }
342}
343
344static void sticon_save_screen(struct vc_data *conp)
345{
346}
347
348static 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,
369};
370
371
372
373static int __init sticonsole_init(void)
374{
375
376 if (sticon_sti)
377 return 0;
378
379 sticon_sti = sti_get_rom(0);
380 if (!sticon_sti)
381 return -ENODEV;
382
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);
386 }
387 return 0;
388}
389
390module_init(sticonsole_init);
391MODULE_LICENSE("GPL");
392
