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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 "../fbdev/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 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
104static 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
131static 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
156static bool sticon_scroll(struct vc_data *conp, unsigned int t,
157 unsigned int b, enum con_scroll dir, unsigned int count)
158{
159 struct sti_struct *sti = sticon_sti;
160
161 if (vga_is_gfx)
162 return false;
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);
169 sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
170 break;
171
172 case SM_DOWN:
173 sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
174 sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
175 break;
176 }
177
178 return false;
179}
180
181static 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
196
197 vc_resize(c, vc_cols, vc_rows);
198
199 }
200}
201
202static void sticon_deinit(struct vc_data *c)
203{
204}
205
206static 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
215static int sticon_switch(struct vc_data *conp)
216{
217 return 1;
218}
219
220static int sticon_set_origin(struct vc_data *conp)
221{
222 return 0;
223}
224
225static 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
239static 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
255static 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
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
291static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
292 u8 blink, u8 underline, u8 reverse, u8 italic)
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
303static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
304{
305 int col = 1;
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
319static void sticon_save_screen(struct vc_data *conp)
320{
321}
322
323static const struct consw sti_con = {
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,
333 .con_switch = sticon_switch,
334 .con_blank = sticon_blank,
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
345static int __init sticonsole_init(void)
346{
347 int err;
348
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");
358 console_lock();
359 err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
360 console_unlock();
361 return err;
362 }
363 return 0;
364}
365
366module_init(sticonsole_init);
367MODULE_LICENSE("GPL");
368
