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1bbb4f20 TW |
1 | /* |
2 | * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles | |
3 | * | |
4 | * VGA text mode console part | |
5 | * | |
6 | * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria | |
7 | * | |
8 | * If distributed as part of the Linux kernel, this code is licensed under the | |
9 | * terms of the GPL v2. | |
10 | * | |
11 | * Otherwise, the following license terms apply: | |
12 | * | |
13 | * * Redistribution and use in source and binary forms, with or without | |
14 | * * modification, are permitted provided that the following conditions | |
15 | * * are met: | |
16 | * * 1) Redistributions of source code must retain the above copyright | |
17 | * * notice, this list of conditions and the following disclaimer. | |
18 | * * 2) Redistributions in binary form must reproduce the above copyright | |
19 | * * notice, this list of conditions and the following disclaimer in the | |
20 | * * documentation and/or other materials provided with the distribution. | |
21 | * * 3) The name of the author may not be used to endorse or promote products | |
22 | * * derived from this software without specific psisusbr written permission. | |
23 | * * | |
24 | * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR | |
25 | * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
26 | * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
27 | * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
28 | * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
29 | * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
30 | * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
31 | * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
32 | * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
33 | * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * Author: Thomas Winischhofer <thomas@winischhofer.net> | |
36 | * | |
37 | * Portions based on vgacon.c which are | |
38 | * Created 28 Sep 1997 by Geert Uytterhoeven | |
39 | * Rewritten by Martin Mares <mj@ucw.cz>, July 1998 | |
40 | * based on code Copyright (C) 1991, 1992 Linus Torvalds | |
41 | * 1995 Jay Estabrook | |
42 | * | |
43 | * A note on using in_atomic() in here: We can't handle console | |
44 | * calls from non-schedulable context due to our USB-dependend | |
45 | * nature. For now, this driver just ignores any calls if it | |
46 | * detects this state. | |
47 | * | |
48 | */ | |
49 | ||
50 | #include <linux/config.h> | |
2682d27c | 51 | #include <linux/mutex.h> |
1bbb4f20 TW |
52 | #include <linux/module.h> |
53 | #include <linux/kernel.h> | |
54 | #include <linux/signal.h> | |
55 | #include <linux/sched.h> | |
56 | #include <linux/fs.h> | |
57 | #include <linux/tty.h> | |
58 | #include <linux/console.h> | |
59 | #include <linux/string.h> | |
60 | #include <linux/kd.h> | |
61 | #include <linux/init.h> | |
62 | #include <linux/slab.h> | |
63 | #include <linux/vt_kern.h> | |
64 | #include <linux/selection.h> | |
65 | #include <linux/spinlock.h> | |
66 | #include <linux/kref.h> | |
67 | #include <linux/smp_lock.h> | |
68 | #include <linux/ioport.h> | |
69 | #include <linux/interrupt.h> | |
70 | #include <linux/vmalloc.h> | |
71 | ||
72 | #include "sisusb.h" | |
df47e533 | 73 | #include "sisusb_init.h" |
1bbb4f20 TW |
74 | |
75 | #ifdef INCL_SISUSB_CON | |
1bbb4f20 TW |
76 | |
77 | #define sisusbcon_writew(val, addr) (*(addr) = (val)) | |
78 | #define sisusbcon_readw(addr) (*(addr)) | |
79 | #define sisusbcon_memmovew(d, s, c) memmove(d, s, c) | |
80 | #define sisusbcon_memcpyw(d, s, c) memcpy(d, s, c) | |
81 | ||
82 | /* vc_data -> sisusb conversion table */ | |
83 | static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES]; | |
84 | ||
85 | /* Forward declaration */ | |
86 | static const struct consw sisusb_con; | |
87 | ||
1bbb4f20 TW |
88 | static inline void |
89 | sisusbcon_memsetw(u16 *s, u16 c, unsigned int count) | |
90 | { | |
91 | count /= 2; | |
92 | while (count--) | |
93 | sisusbcon_writew(c, s++); | |
94 | } | |
95 | ||
96 | static inline void | |
97 | sisusb_initialize(struct sisusb_usb_data *sisusb) | |
98 | { | |
99 | /* Reset cursor and start address */ | |
100 | if (sisusb_setidxreg(sisusb, SISCR, 0x0c, 0x00)) | |
101 | return; | |
102 | if (sisusb_setidxreg(sisusb, SISCR, 0x0d, 0x00)) | |
103 | return; | |
104 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, 0x00)) | |
105 | return; | |
106 | sisusb_setidxreg(sisusb, SISCR, 0x0f, 0x00); | |
107 | } | |
108 | ||
109 | static inline void | |
110 | sisusbcon_set_start_address(struct sisusb_usb_data *sisusb, struct vc_data *c) | |
111 | { | |
112 | sisusb->cur_start_addr = (c->vc_visible_origin - sisusb->scrbuf) / 2; | |
113 | ||
114 | sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8)); | |
115 | sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff)); | |
116 | } | |
117 | ||
118 | void | |
119 | sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location) | |
120 | { | |
121 | if (sisusb->sisusb_cursor_loc == location) | |
122 | return; | |
123 | ||
124 | sisusb->sisusb_cursor_loc = location; | |
125 | ||
126 | /* Hardware bug: Text cursor appears twice or not at all | |
127 | * at some positions. Work around it with the cursor skew | |
128 | * bits. | |
129 | */ | |
130 | ||
131 | if ((location & 0x0007) == 0x0007) { | |
132 | sisusb->bad_cursor_pos = 1; | |
133 | location--; | |
134 | if (sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0x1f, 0x20)) | |
135 | return; | |
136 | } else if (sisusb->bad_cursor_pos) { | |
137 | if (sisusb_setidxregand(sisusb, SISCR, 0x0b, 0x1f)) | |
138 | return; | |
139 | sisusb->bad_cursor_pos = 0; | |
140 | } | |
141 | ||
142 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, (location >> 8))) | |
143 | return; | |
144 | sisusb_setidxreg(sisusb, SISCR, 0x0f, (location & 0xff)); | |
145 | } | |
146 | ||
147 | static inline struct sisusb_usb_data * | |
148 | sisusb_get_sisusb(unsigned short console) | |
149 | { | |
150 | return mysisusbs[console]; | |
151 | } | |
152 | ||
153 | static inline int | |
154 | sisusb_sisusb_valid(struct sisusb_usb_data *sisusb) | |
155 | { | |
156 | if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) | |
157 | return 0; | |
158 | ||
159 | return 1; | |
160 | } | |
161 | ||
162 | static struct sisusb_usb_data * | |
163 | sisusb_get_sisusb_lock_and_check(unsigned short console) | |
164 | { | |
165 | struct sisusb_usb_data *sisusb; | |
166 | ||
167 | /* We can't handle console calls in non-schedulable | |
168 | * context due to our locks and the USB transport. | |
169 | * So we simply ignore them. This should only affect | |
170 | * some calls to printk. | |
171 | */ | |
172 | if (in_atomic()) | |
173 | return NULL; | |
174 | ||
175 | if (!(sisusb = sisusb_get_sisusb(console))) | |
176 | return NULL; | |
177 | ||
2682d27c | 178 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
179 | |
180 | if (!sisusb_sisusb_valid(sisusb) || | |
181 | !sisusb->havethisconsole[console]) { | |
2682d27c | 182 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
183 | return NULL; |
184 | } | |
185 | ||
186 | return sisusb; | |
187 | } | |
188 | ||
189 | static int | |
190 | sisusb_is_inactive(struct vc_data *c, struct sisusb_usb_data *sisusb) | |
191 | { | |
192 | if (sisusb->is_gfx || | |
193 | sisusb->textmodedestroyed || | |
194 | c->vc_mode != KD_TEXT) | |
195 | return 1; | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | /* con_startup console interface routine */ | |
201 | static const char * | |
202 | sisusbcon_startup(void) | |
203 | { | |
204 | return "SISUSBCON"; | |
205 | } | |
206 | ||
207 | /* con_init console interface routine */ | |
208 | static void | |
209 | sisusbcon_init(struct vc_data *c, int init) | |
210 | { | |
211 | struct sisusb_usb_data *sisusb; | |
212 | int cols, rows; | |
213 | ||
214 | /* This is called by take_over_console(), | |
215 | * ie by us/under our control. It is | |
216 | * only called after text mode and fonts | |
217 | * are set up/restored. | |
218 | */ | |
219 | ||
2682d27c | 220 | mutex_lock(&disconnect_mutex); |
1bbb4f20 TW |
221 | |
222 | if (!(sisusb = sisusb_get_sisusb(c->vc_num))) { | |
2682d27c | 223 | mutex_unlock(&disconnect_mutex); |
1bbb4f20 TW |
224 | return; |
225 | } | |
226 | ||
2682d27c | 227 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
228 | |
229 | if (!sisusb_sisusb_valid(sisusb)) { | |
2682d27c AV |
230 | mutex_unlock(&sisusb->lock); |
231 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
232 | return; |
233 | } | |
234 | ||
235 | c->vc_can_do_color = 1; | |
236 | ||
237 | c->vc_complement_mask = 0x7700; | |
238 | ||
239 | c->vc_hi_font_mask = sisusb->current_font_512 ? 0x0800 : 0; | |
240 | ||
241 | sisusb->haveconsole = 1; | |
242 | ||
243 | sisusb->havethisconsole[c->vc_num] = 1; | |
244 | ||
245 | /* We only support 640x400 */ | |
246 | c->vc_scan_lines = 400; | |
247 | ||
248 | c->vc_font.height = sisusb->current_font_height; | |
249 | ||
250 | /* We only support width = 8 */ | |
251 | cols = 80; | |
252 | rows = c->vc_scan_lines / c->vc_font.height; | |
253 | ||
254 | /* Increment usage count for our sisusb. | |
255 | * Doing so saves us from upping/downing | |
256 | * the disconnect semaphore; we can't | |
257 | * lose our sisusb until this is undone | |
258 | * in con_deinit. For all other console | |
259 | * interface functions, it suffices to | |
260 | * use sisusb->lock and do a quick check | |
261 | * of sisusb for device disconnection. | |
262 | */ | |
263 | kref_get(&sisusb->kref); | |
264 | ||
265 | if (!*c->vc_uni_pagedir_loc) | |
266 | con_set_default_unimap(c); | |
267 | ||
2682d27c | 268 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 269 | |
2682d27c | 270 | mutex_unlock(&disconnect_mutex); |
1bbb4f20 TW |
271 | |
272 | if (init) { | |
273 | c->vc_cols = cols; | |
274 | c->vc_rows = rows; | |
275 | } else | |
276 | vc_resize(c, cols, rows); | |
277 | } | |
278 | ||
279 | /* con_deinit console interface routine */ | |
280 | static void | |
281 | sisusbcon_deinit(struct vc_data *c) | |
282 | { | |
283 | struct sisusb_usb_data *sisusb; | |
284 | int i; | |
285 | ||
286 | /* This is called by take_over_console() | |
287 | * and others, ie not under our control. | |
288 | */ | |
289 | ||
2682d27c | 290 | mutex_lock(&disconnect_mutex); |
1bbb4f20 TW |
291 | |
292 | if (!(sisusb = sisusb_get_sisusb(c->vc_num))) { | |
2682d27c | 293 | mutex_unlock(&disconnect_mutex); |
1bbb4f20 TW |
294 | return; |
295 | } | |
296 | ||
2682d27c | 297 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
298 | |
299 | /* Clear ourselves in mysisusbs */ | |
300 | mysisusbs[c->vc_num] = NULL; | |
301 | ||
302 | sisusb->havethisconsole[c->vc_num] = 0; | |
303 | ||
304 | /* Free our font buffer if all consoles are gone */ | |
305 | if (sisusb->font_backup) { | |
306 | for(i = 0; i < MAX_NR_CONSOLES; i++) { | |
307 | if (sisusb->havethisconsole[c->vc_num]) | |
308 | break; | |
309 | } | |
310 | if (i == MAX_NR_CONSOLES) { | |
311 | vfree(sisusb->font_backup); | |
312 | sisusb->font_backup = NULL; | |
313 | } | |
314 | } | |
315 | ||
2682d27c | 316 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
317 | |
318 | /* decrement the usage count on our sisusb */ | |
319 | kref_put(&sisusb->kref, sisusb_delete); | |
320 | ||
2682d27c | 321 | mutex_unlock(&disconnect_mutex); |
1bbb4f20 TW |
322 | } |
323 | ||
324 | /* interface routine */ | |
325 | static u8 | |
326 | sisusbcon_build_attr(struct vc_data *c, u8 color, u8 intensity, | |
327 | u8 blink, u8 underline, u8 reverse) | |
328 | { | |
329 | u8 attr = color; | |
330 | ||
331 | if (underline) | |
332 | attr = (attr & 0xf0) | c->vc_ulcolor; | |
333 | else if (intensity == 0) | |
334 | attr = (attr & 0xf0) | c->vc_halfcolor; | |
335 | ||
336 | if (reverse) | |
337 | attr = ((attr) & 0x88) | | |
338 | ((((attr) >> 4) | | |
339 | ((attr) << 4)) & 0x77); | |
340 | ||
341 | if (blink) | |
342 | attr ^= 0x80; | |
343 | ||
344 | if (intensity == 2) | |
345 | attr ^= 0x08; | |
346 | ||
347 | return attr; | |
348 | } | |
349 | ||
350 | /* Interface routine */ | |
351 | static void | |
352 | sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count) | |
353 | { | |
354 | /* Invert a region. This is called with a pointer | |
355 | * to the console's internal screen buffer. So we | |
356 | * simply do the inversion there and rely on | |
357 | * a call to putc(s) to update the real screen. | |
358 | */ | |
359 | ||
360 | while (count--) { | |
361 | u16 a = sisusbcon_readw(p); | |
362 | ||
363 | a = ((a) & 0x88ff) | | |
364 | (((a) & 0x7000) >> 4) | | |
365 | (((a) & 0x0700) << 4); | |
366 | ||
367 | sisusbcon_writew(a, p++); | |
368 | } | |
369 | } | |
370 | ||
371 | #define SISUSB_VADDR(x,y) \ | |
372 | ((u16 *)c->vc_origin + \ | |
373 | (y) * sisusb->sisusb_num_columns + \ | |
374 | (x)) | |
375 | ||
376 | #define SISUSB_HADDR(x,y) \ | |
377 | ((u16 *)(sisusb->vrambase + (c->vc_origin - sisusb->scrbuf)) + \ | |
378 | (y) * sisusb->sisusb_num_columns + \ | |
379 | (x)) | |
380 | ||
381 | /* Interface routine */ | |
382 | static void | |
383 | sisusbcon_putc(struct vc_data *c, int ch, int y, int x) | |
384 | { | |
385 | struct sisusb_usb_data *sisusb; | |
386 | ssize_t written; | |
387 | ||
388 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
389 | return; | |
390 | ||
391 | /* sisusb->lock is down */ | |
392 | ||
393 | /* Don't need to put the character into buffer ourselves, | |
394 | * because the vt does this BEFORE calling us. | |
395 | */ | |
396 | #if 0 | |
397 | sisusbcon_writew(ch, SISUSB_VADDR(x, y)); | |
398 | #endif | |
399 | ||
400 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 401 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
402 | return; |
403 | } | |
404 | ||
405 | ||
406 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), | |
407 | (u32)SISUSB_HADDR(x, y), 2, &written); | |
408 | ||
2682d27c | 409 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
410 | } |
411 | ||
412 | /* Interface routine */ | |
413 | static void | |
414 | sisusbcon_putcs(struct vc_data *c, const unsigned short *s, | |
415 | int count, int y, int x) | |
416 | { | |
417 | struct sisusb_usb_data *sisusb; | |
418 | ssize_t written; | |
419 | u16 *dest; | |
420 | int i; | |
421 | ||
422 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
423 | return; | |
424 | ||
425 | /* sisusb->lock is down */ | |
426 | ||
427 | /* Need to put the characters into the buffer ourselves, | |
428 | * because the vt does this AFTER calling us. | |
429 | */ | |
430 | ||
431 | dest = SISUSB_VADDR(x, y); | |
432 | ||
433 | for (i = count; i > 0; i--) | |
434 | sisusbcon_writew(sisusbcon_readw(s++), dest++); | |
435 | ||
436 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 437 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
438 | return; |
439 | } | |
440 | ||
441 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), | |
442 | (u32)SISUSB_HADDR(x, y), count * 2, &written); | |
443 | ||
2682d27c | 444 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
445 | } |
446 | ||
447 | /* Interface routine */ | |
448 | static void | |
449 | sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width) | |
450 | { | |
451 | struct sisusb_usb_data *sisusb; | |
452 | u16 eattr = c->vc_video_erase_char; | |
453 | ssize_t written; | |
454 | int i, length, cols; | |
455 | u16 *dest; | |
456 | ||
457 | if (width <= 0 || height <= 0) | |
458 | return; | |
459 | ||
460 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
461 | return; | |
462 | ||
463 | /* sisusb->lock is down */ | |
464 | ||
465 | /* Need to clear buffer ourselves, because the vt does | |
466 | * this AFTER calling us. | |
467 | */ | |
468 | ||
469 | dest = SISUSB_VADDR(x, y); | |
470 | ||
471 | cols = sisusb->sisusb_num_columns; | |
472 | ||
473 | if (width > cols) | |
474 | width = cols; | |
475 | ||
476 | if (x == 0 && width >= c->vc_cols) { | |
477 | ||
478 | sisusbcon_memsetw(dest, eattr, height * cols * 2); | |
479 | ||
480 | } else { | |
481 | ||
482 | for (i = height; i > 0; i--, dest += cols) | |
483 | sisusbcon_memsetw(dest, eattr, width * 2); | |
484 | ||
485 | } | |
486 | ||
487 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 488 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
489 | return; |
490 | } | |
491 | ||
492 | length = ((height * cols) - x - (cols - width - x)) * 2; | |
493 | ||
494 | ||
495 | sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(x, y), | |
496 | (u32)SISUSB_HADDR(x, y), length, &written); | |
497 | ||
2682d27c | 498 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
499 | } |
500 | ||
501 | /* Interface routine */ | |
502 | static void | |
503 | sisusbcon_bmove(struct vc_data *c, int sy, int sx, | |
504 | int dy, int dx, int height, int width) | |
505 | { | |
506 | struct sisusb_usb_data *sisusb; | |
507 | ssize_t written; | |
508 | int cols, length; | |
509 | #if 0 | |
510 | u16 *src, *dest; | |
511 | int i; | |
512 | #endif | |
513 | ||
514 | if (width <= 0 || height <= 0) | |
515 | return; | |
516 | ||
517 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
518 | return; | |
519 | ||
520 | /* sisusb->lock is down */ | |
521 | ||
522 | cols = sisusb->sisusb_num_columns; | |
523 | ||
524 | /* Don't need to move data outselves, because | |
525 | * vt does this BEFORE calling us. | |
526 | * This is only used by vt's insert/deletechar. | |
527 | */ | |
528 | #if 0 | |
529 | if (sx == 0 && dx == 0 && width >= c->vc_cols && width <= cols) { | |
530 | ||
531 | sisusbcon_memmovew(SISUSB_VADDR(0, dy), SISUSB_VADDR(0, sy), | |
532 | height * width * 2); | |
533 | ||
534 | } else if (dy < sy || (dy == sy && dx < sx)) { | |
535 | ||
536 | src = SISUSB_VADDR(sx, sy); | |
537 | dest = SISUSB_VADDR(dx, dy); | |
538 | ||
539 | for (i = height; i > 0; i--) { | |
540 | sisusbcon_memmovew(dest, src, width * 2); | |
541 | src += cols; | |
542 | dest += cols; | |
543 | } | |
544 | ||
545 | } else { | |
546 | ||
547 | src = SISUSB_VADDR(sx, sy + height - 1); | |
548 | dest = SISUSB_VADDR(dx, dy + height - 1); | |
549 | ||
550 | for (i = height; i > 0; i--) { | |
551 | sisusbcon_memmovew(dest, src, width * 2); | |
552 | src -= cols; | |
553 | dest -= cols; | |
554 | } | |
555 | ||
556 | } | |
557 | #endif | |
558 | ||
559 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 560 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
561 | return; |
562 | } | |
563 | ||
564 | length = ((height * cols) - dx - (cols - width - dx)) * 2; | |
565 | ||
566 | ||
567 | sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(dx, dy), | |
568 | (u32)SISUSB_HADDR(dx, dy), length, &written); | |
569 | ||
2682d27c | 570 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
571 | } |
572 | ||
573 | /* interface routine */ | |
574 | static int | |
575 | sisusbcon_switch(struct vc_data *c) | |
576 | { | |
577 | struct sisusb_usb_data *sisusb; | |
578 | ssize_t written; | |
579 | int length; | |
580 | ||
581 | /* Returnvalue 0 means we have fully restored screen, | |
582 | * and vt doesn't need to call do_update_region(). | |
583 | * Returnvalue != 0 naturally means the opposite. | |
584 | */ | |
585 | ||
586 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
587 | return 0; | |
588 | ||
589 | /* sisusb->lock is down */ | |
590 | ||
591 | /* Don't write to screen if in gfx mode */ | |
592 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 593 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
594 | return 0; |
595 | } | |
596 | ||
597 | /* That really should not happen. It would mean we are | |
598 | * being called while the vc is using its private buffer | |
599 | * as origin. | |
600 | */ | |
601 | if (c->vc_origin == (unsigned long)c->vc_screenbuf) { | |
2682d27c | 602 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
603 | printk(KERN_DEBUG "sisusb: ASSERT ORIGIN != SCREENBUF!\n"); |
604 | return 0; | |
605 | } | |
606 | ||
607 | /* Check that we don't copy too much */ | |
608 | length = min((int)c->vc_screenbuf_size, | |
609 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); | |
610 | ||
611 | /* Restore the screen contents */ | |
612 | sisusbcon_memcpyw((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, | |
613 | length); | |
614 | ||
615 | sisusb_copy_memory(sisusb, (unsigned char *)c->vc_origin, | |
616 | (u32)SISUSB_HADDR(0, 0), | |
617 | length, &written); | |
618 | ||
2682d27c | 619 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
620 | |
621 | return 0; | |
622 | } | |
623 | ||
624 | /* interface routine */ | |
625 | static void | |
626 | sisusbcon_save_screen(struct vc_data *c) | |
627 | { | |
628 | struct sisusb_usb_data *sisusb; | |
629 | int length; | |
630 | ||
631 | /* Save the current screen contents to vc's private | |
632 | * buffer. | |
633 | */ | |
634 | ||
635 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
636 | return; | |
637 | ||
638 | /* sisusb->lock is down */ | |
639 | ||
640 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 641 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
642 | return; |
643 | } | |
644 | ||
645 | /* Check that we don't copy too much */ | |
646 | length = min((int)c->vc_screenbuf_size, | |
647 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); | |
648 | ||
649 | /* Save the screen contents to vc's private buffer */ | |
650 | sisusbcon_memcpyw((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, | |
651 | length); | |
652 | ||
2682d27c | 653 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
654 | } |
655 | ||
656 | /* interface routine */ | |
657 | static int | |
658 | sisusbcon_set_palette(struct vc_data *c, unsigned char *table) | |
659 | { | |
660 | struct sisusb_usb_data *sisusb; | |
661 | int i, j; | |
662 | ||
663 | /* Return value not used by vt */ | |
664 | ||
665 | if (!CON_IS_VISIBLE(c)) | |
666 | return -EINVAL; | |
667 | ||
668 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
669 | return -EINVAL; | |
670 | ||
671 | /* sisusb->lock is down */ | |
672 | ||
673 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 674 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
675 | return -EINVAL; |
676 | } | |
677 | ||
678 | for (i = j = 0; i < 16; i++) { | |
679 | if (sisusb_setreg(sisusb, SISCOLIDX, table[i])) | |
680 | break; | |
681 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
682 | break; | |
683 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
684 | break; | |
685 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
686 | break; | |
687 | } | |
688 | ||
2682d27c | 689 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
690 | |
691 | return 0; | |
692 | } | |
693 | ||
694 | /* interface routine */ | |
695 | static int | |
696 | sisusbcon_blank(struct vc_data *c, int blank, int mode_switch) | |
697 | { | |
698 | struct sisusb_usb_data *sisusb; | |
699 | u8 sr1, cr17, pmreg, cr63; | |
700 | ssize_t written; | |
701 | int ret = 0; | |
702 | ||
703 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
704 | return 0; | |
705 | ||
706 | /* sisusb->lock is down */ | |
707 | ||
708 | if (mode_switch) | |
709 | sisusb->is_gfx = blank ? 1 : 0; | |
710 | ||
711 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 712 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
713 | return 0; |
714 | } | |
715 | ||
716 | switch (blank) { | |
717 | ||
718 | case 1: /* Normal blanking: Clear screen */ | |
719 | case -1: | |
720 | sisusbcon_memsetw((u16 *)c->vc_origin, | |
721 | c->vc_video_erase_char, | |
722 | c->vc_screenbuf_size); | |
723 | sisusb_copy_memory(sisusb, | |
724 | (unsigned char *)c->vc_origin, | |
725 | (u32)(sisusb->vrambase + | |
726 | (c->vc_origin - sisusb->scrbuf)), | |
727 | c->vc_screenbuf_size, &written); | |
728 | sisusb->con_blanked = 1; | |
729 | ret = 1; | |
730 | break; | |
731 | ||
732 | default: /* VESA blanking */ | |
733 | switch (blank) { | |
734 | case 0: /* Unblank */ | |
735 | sr1 = 0x00; | |
736 | cr17 = 0x80; | |
737 | pmreg = 0x00; | |
738 | cr63 = 0x00; | |
739 | ret = 1; | |
740 | sisusb->con_blanked = 0; | |
741 | break; | |
742 | case VESA_VSYNC_SUSPEND + 1: | |
743 | sr1 = 0x20; | |
744 | cr17 = 0x80; | |
745 | pmreg = 0x80; | |
746 | cr63 = 0x40; | |
747 | break; | |
748 | case VESA_HSYNC_SUSPEND + 1: | |
749 | sr1 = 0x20; | |
750 | cr17 = 0x80; | |
751 | pmreg = 0x40; | |
752 | cr63 = 0x40; | |
753 | break; | |
754 | case VESA_POWERDOWN + 1: | |
755 | sr1 = 0x20; | |
756 | cr17 = 0x00; | |
757 | pmreg = 0xc0; | |
758 | cr63 = 0x40; | |
759 | break; | |
760 | default: | |
2682d27c | 761 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
762 | return -EINVAL; |
763 | } | |
764 | ||
765 | sisusb_setidxregandor(sisusb, SISSR, 0x01, ~0x20, sr1); | |
766 | sisusb_setidxregandor(sisusb, SISCR, 0x17, 0x7f, cr17); | |
767 | sisusb_setidxregandor(sisusb, SISSR, 0x1f, 0x3f, pmreg); | |
768 | sisusb_setidxregandor(sisusb, SISCR, 0x63, 0xbf, cr63); | |
769 | ||
770 | } | |
771 | ||
2682d27c | 772 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
773 | |
774 | return ret; | |
775 | } | |
776 | ||
777 | /* interface routine */ | |
778 | static int | |
779 | sisusbcon_scrolldelta(struct vc_data *c, int lines) | |
780 | { | |
781 | struct sisusb_usb_data *sisusb; | |
782 | int margin = c->vc_size_row * 4; | |
783 | int ul, we, p, st; | |
784 | ||
785 | /* The return value does not seem to be used */ | |
786 | ||
787 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
788 | return 0; | |
789 | ||
790 | /* sisusb->lock is down */ | |
791 | ||
792 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 793 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
794 | return 0; |
795 | } | |
796 | ||
797 | if (!lines) /* Turn scrollback off */ | |
798 | c->vc_visible_origin = c->vc_origin; | |
799 | else { | |
800 | ||
801 | if (sisusb->con_rolled_over > | |
802 | (c->vc_scr_end - sisusb->scrbuf) + margin) { | |
803 | ||
804 | ul = c->vc_scr_end - sisusb->scrbuf; | |
805 | we = sisusb->con_rolled_over + c->vc_size_row; | |
806 | ||
807 | } else { | |
808 | ||
809 | ul = 0; | |
810 | we = sisusb->scrbuf_size; | |
811 | ||
812 | } | |
813 | ||
814 | p = (c->vc_visible_origin - sisusb->scrbuf - ul + we) % we + | |
815 | lines * c->vc_size_row; | |
816 | ||
817 | st = (c->vc_origin - sisusb->scrbuf - ul + we) % we; | |
818 | ||
819 | if (st < 2 * margin) | |
820 | margin = 0; | |
821 | ||
822 | if (p < margin) | |
823 | p = 0; | |
824 | ||
825 | if (p > st - margin) | |
826 | p = st; | |
827 | ||
828 | c->vc_visible_origin = sisusb->scrbuf + (p + ul) % we; | |
829 | } | |
830 | ||
831 | sisusbcon_set_start_address(sisusb, c); | |
832 | ||
2682d27c | 833 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
834 | |
835 | return 1; | |
836 | } | |
837 | ||
838 | /* Interface routine */ | |
839 | static void | |
840 | sisusbcon_cursor(struct vc_data *c, int mode) | |
841 | { | |
842 | struct sisusb_usb_data *sisusb; | |
843 | int from, to, baseline; | |
844 | ||
845 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
846 | return; | |
847 | ||
848 | /* sisusb->lock is down */ | |
849 | ||
850 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 851 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
852 | return; |
853 | } | |
854 | ||
855 | if (c->vc_origin != c->vc_visible_origin) { | |
856 | c->vc_visible_origin = c->vc_origin; | |
857 | sisusbcon_set_start_address(sisusb, c); | |
858 | } | |
859 | ||
860 | if (mode == CM_ERASE) { | |
861 | sisusb_setidxregor(sisusb, SISCR, 0x0a, 0x20); | |
862 | sisusb->sisusb_cursor_size_to = -1; | |
2682d27c | 863 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
864 | return; |
865 | } | |
866 | ||
867 | sisusb_set_cursor(sisusb, (c->vc_pos - sisusb->scrbuf) / 2); | |
868 | ||
869 | baseline = c->vc_font.height - (c->vc_font.height < 10 ? 1 : 2); | |
870 | ||
871 | switch (c->vc_cursor_type & 0x0f) { | |
872 | case CUR_BLOCK: from = 1; | |
873 | to = c->vc_font.height; | |
874 | break; | |
875 | case CUR_TWO_THIRDS: from = c->vc_font.height / 3; | |
876 | to = baseline; | |
877 | break; | |
878 | case CUR_LOWER_HALF: from = c->vc_font.height / 2; | |
879 | to = baseline; | |
880 | break; | |
881 | case CUR_LOWER_THIRD: from = (c->vc_font.height * 2) / 3; | |
882 | to = baseline; | |
883 | break; | |
884 | case CUR_NONE: from = 31; | |
885 | to = 30; | |
886 | break; | |
887 | default: | |
888 | case CUR_UNDERLINE: from = baseline - 1; | |
889 | to = baseline; | |
890 | break; | |
891 | } | |
892 | ||
893 | if (sisusb->sisusb_cursor_size_from != from || | |
894 | sisusb->sisusb_cursor_size_to != to) { | |
895 | ||
896 | sisusb_setidxreg(sisusb, SISCR, 0x0a, from); | |
897 | sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0, to); | |
898 | ||
899 | sisusb->sisusb_cursor_size_from = from; | |
900 | sisusb->sisusb_cursor_size_to = to; | |
901 | } | |
902 | ||
2682d27c | 903 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
904 | } |
905 | ||
906 | static int | |
907 | sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, | |
908 | int t, int b, int dir, int lines) | |
909 | { | |
910 | int cols = sisusb->sisusb_num_columns; | |
911 | int length = ((b - t) * cols) * 2; | |
912 | u16 eattr = c->vc_video_erase_char; | |
913 | ssize_t written; | |
914 | ||
915 | /* sisusb->lock is down */ | |
916 | ||
917 | /* Scroll an area which does not match the | |
918 | * visible screen's dimensions. This needs | |
919 | * to be done separately, as it does not | |
920 | * use hardware panning. | |
921 | */ | |
922 | ||
923 | switch (dir) { | |
924 | ||
925 | case SM_UP: | |
926 | sisusbcon_memmovew(SISUSB_VADDR(0, t), | |
927 | SISUSB_VADDR(0, t + lines), | |
928 | (b - t - lines) * cols * 2); | |
929 | sisusbcon_memsetw(SISUSB_VADDR(0, b - lines), eattr, | |
930 | lines * cols * 2); | |
931 | break; | |
932 | ||
933 | case SM_DOWN: | |
934 | sisusbcon_memmovew(SISUSB_VADDR(0, t + lines), | |
935 | SISUSB_VADDR(0, t), | |
936 | (b - t - lines) * cols * 2); | |
937 | sisusbcon_memsetw(SISUSB_VADDR(0, t), eattr, | |
938 | lines * cols * 2); | |
939 | break; | |
940 | } | |
941 | ||
942 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(0, t), | |
943 | (u32)SISUSB_HADDR(0, t), length, &written); | |
944 | ||
2682d27c | 945 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
946 | |
947 | return 1; | |
948 | } | |
949 | ||
950 | /* Interface routine */ | |
951 | static int | |
952 | sisusbcon_scroll(struct vc_data *c, int t, int b, int dir, int lines) | |
953 | { | |
954 | struct sisusb_usb_data *sisusb; | |
955 | u16 eattr = c->vc_video_erase_char; | |
956 | ssize_t written; | |
957 | int copyall = 0; | |
958 | unsigned long oldorigin; | |
959 | unsigned int delta = lines * c->vc_size_row; | |
960 | u32 originoffset; | |
961 | ||
962 | /* Returning != 0 means we have done the scrolling successfully. | |
963 | * Returning 0 makes vt do the scrolling on its own. | |
964 | * Note that con_scroll is only called if the console is | |
965 | * visible. In that case, the origin should be our buffer, | |
966 | * not the vt's private one. | |
967 | */ | |
968 | ||
969 | if (!lines) | |
970 | return 1; | |
971 | ||
972 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
973 | return 0; | |
974 | ||
975 | /* sisusb->lock is down */ | |
976 | ||
977 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 978 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
979 | return 0; |
980 | } | |
981 | ||
982 | /* Special case */ | |
983 | if (t || b != c->vc_rows) | |
984 | return sisusbcon_scroll_area(c, sisusb, t, b, dir, lines); | |
985 | ||
986 | if (c->vc_origin != c->vc_visible_origin) { | |
987 | c->vc_visible_origin = c->vc_origin; | |
988 | sisusbcon_set_start_address(sisusb, c); | |
989 | } | |
990 | ||
991 | /* limit amount to maximum realistic size */ | |
992 | if (lines > c->vc_rows) | |
993 | lines = c->vc_rows; | |
994 | ||
995 | oldorigin = c->vc_origin; | |
996 | ||
997 | switch (dir) { | |
998 | ||
999 | case SM_UP: | |
1000 | ||
1001 | if (c->vc_scr_end + delta >= | |
1002 | sisusb->scrbuf + sisusb->scrbuf_size) { | |
1003 | sisusbcon_memcpyw((u16 *)sisusb->scrbuf, | |
1004 | (u16 *)(oldorigin + delta), | |
1005 | c->vc_screenbuf_size - delta); | |
1006 | c->vc_origin = sisusb->scrbuf; | |
1007 | sisusb->con_rolled_over = oldorigin - sisusb->scrbuf; | |
1008 | copyall = 1; | |
1009 | } else | |
1010 | c->vc_origin += delta; | |
1011 | ||
1012 | sisusbcon_memsetw( | |
1013 | (u16 *)(c->vc_origin + c->vc_screenbuf_size - delta), | |
1014 | eattr, delta); | |
1015 | ||
1016 | break; | |
1017 | ||
1018 | case SM_DOWN: | |
1019 | ||
1020 | if (oldorigin - delta < sisusb->scrbuf) { | |
1021 | sisusbcon_memmovew((u16 *)(sisusb->scrbuf + | |
1022 | sisusb->scrbuf_size - | |
1023 | c->vc_screenbuf_size + | |
1024 | delta), | |
1025 | (u16 *)oldorigin, | |
1026 | c->vc_screenbuf_size - delta); | |
1027 | c->vc_origin = sisusb->scrbuf + | |
1028 | sisusb->scrbuf_size - | |
1029 | c->vc_screenbuf_size; | |
1030 | sisusb->con_rolled_over = 0; | |
1031 | copyall = 1; | |
1032 | } else | |
1033 | c->vc_origin -= delta; | |
1034 | ||
1035 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
1036 | ||
1037 | scr_memsetw((u16 *)(c->vc_origin), eattr, delta); | |
1038 | ||
1039 | break; | |
1040 | } | |
1041 | ||
1042 | originoffset = (u32)(c->vc_origin - sisusb->scrbuf); | |
1043 | ||
1044 | if (copyall) | |
1045 | sisusb_copy_memory(sisusb, | |
1046 | (char *)c->vc_origin, | |
1047 | (u32)(sisusb->vrambase + originoffset), | |
1048 | c->vc_screenbuf_size, &written); | |
1049 | else if (dir == SM_UP) | |
1050 | sisusb_copy_memory(sisusb, | |
1051 | (char *)c->vc_origin + c->vc_screenbuf_size - delta, | |
1052 | (u32)sisusb->vrambase + originoffset + | |
1053 | c->vc_screenbuf_size - delta, | |
1054 | delta, &written); | |
1055 | else | |
1056 | sisusb_copy_memory(sisusb, | |
1057 | (char *)c->vc_origin, | |
1058 | (u32)(sisusb->vrambase + originoffset), | |
1059 | delta, &written); | |
1060 | ||
1061 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
1062 | c->vc_visible_origin = c->vc_origin; | |
1063 | ||
1064 | sisusbcon_set_start_address(sisusb, c); | |
1065 | ||
1066 | c->vc_pos = c->vc_pos - oldorigin + c->vc_origin; | |
1067 | ||
2682d27c | 1068 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1069 | |
1070 | return 1; | |
1071 | } | |
1072 | ||
1073 | /* Interface routine */ | |
1074 | static int | |
1075 | sisusbcon_set_origin(struct vc_data *c) | |
1076 | { | |
1077 | struct sisusb_usb_data *sisusb; | |
1078 | ||
1079 | /* Returning != 0 means we were successful. | |
1080 | * Returning 0 will vt make to use its own | |
1081 | * screenbuffer as the origin. | |
1082 | */ | |
1083 | ||
1084 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
1085 | return 0; | |
1086 | ||
1087 | /* sisusb->lock is down */ | |
1088 | ||
1089 | if (sisusb_is_inactive(c, sisusb) || sisusb->con_blanked) { | |
2682d27c | 1090 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1091 | return 0; |
1092 | } | |
1093 | ||
1094 | c->vc_origin = c->vc_visible_origin = sisusb->scrbuf; | |
1095 | ||
1096 | sisusbcon_set_start_address(sisusb, c); | |
1097 | ||
1098 | sisusb->con_rolled_over = 0; | |
1099 | ||
2682d27c | 1100 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1101 | |
1102 | return 1; | |
1103 | } | |
1104 | ||
1105 | /* Interface routine */ | |
1106 | static int | |
1107 | sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows) | |
1108 | { | |
1109 | struct sisusb_usb_data *sisusb; | |
1110 | int fh; | |
1111 | ||
1112 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
1113 | return -ENODEV; | |
1114 | ||
1115 | fh = sisusb->current_font_height; | |
1116 | ||
2682d27c | 1117 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1118 | |
1119 | /* We are quite unflexible as regards resizing. The vt code | |
1120 | * handles sizes where the line length isn't equal the pitch | |
1121 | * quite badly. As regards the rows, our panning tricks only | |
1122 | * work well if the number of rows equals the visible number | |
1123 | * of rows. | |
1124 | */ | |
1125 | ||
1126 | if (newcols != 80 || c->vc_scan_lines / fh != newrows) | |
1127 | return -EINVAL; | |
1128 | ||
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | int | |
1133 | sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot, | |
1134 | u8 *arg, int cmapsz, int ch512, int dorecalc, | |
1135 | struct vc_data *c, int fh, int uplock) | |
1136 | { | |
1137 | int font_select = 0x00, i, err = 0; | |
1138 | u32 offset = 0; | |
1139 | u8 dummy; | |
1140 | ||
1141 | /* sisusb->lock is down */ | |
1142 | ||
1143 | /* | |
1144 | * The default font is kept in slot 0. | |
1145 | * A user font is loaded in slot 2 (256 ch) | |
1146 | * or 2+3 (512 ch). | |
1147 | */ | |
1148 | ||
1149 | if ((slot != 0 && slot != 2) || !fh) { | |
1150 | if (uplock) | |
2682d27c | 1151 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1152 | return -EINVAL; |
1153 | } | |
1154 | ||
1155 | if (set) | |
1156 | sisusb->font_slot = slot; | |
1157 | ||
1158 | /* Default font is always 256 */ | |
1159 | if (slot == 0) | |
1160 | ch512 = 0; | |
1161 | else | |
1162 | offset = 4 * cmapsz; | |
1163 | ||
1164 | font_select = (slot == 0) ? 0x00 : (ch512 ? 0x0e : 0x0a); | |
1165 | ||
1166 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ | |
1167 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x04); /* Write to plane 2 */ | |
1168 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x07); /* Memory mode a0-bf */ | |
1169 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset */ | |
1170 | ||
1171 | if (err) | |
1172 | goto font_op_error; | |
1173 | ||
1174 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x03); /* Select plane read 2 */ | |
1175 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x00); /* Disable odd/even */ | |
1176 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x00); /* Address range a0-bf */ | |
1177 | ||
1178 | if (err) | |
1179 | goto font_op_error; | |
1180 | ||
1181 | if (arg) { | |
1182 | if (set) | |
1183 | for (i = 0; i < cmapsz; i++) { | |
1184 | err |= sisusb_writeb(sisusb, | |
1185 | sisusb->vrambase + offset + i, | |
1186 | arg[i]); | |
1187 | if (err) | |
1188 | break; | |
1189 | } | |
1190 | else | |
1191 | for (i = 0; i < cmapsz; i++) { | |
1192 | err |= sisusb_readb(sisusb, | |
1193 | sisusb->vrambase + offset + i, | |
1194 | &arg[i]); | |
1195 | if (err) | |
1196 | break; | |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * In 512-character mode, the character map is not contiguous if | |
1201 | * we want to remain EGA compatible -- which we do | |
1202 | */ | |
1203 | ||
1204 | if (ch512) { | |
1205 | if (set) | |
1206 | for (i = 0; i < cmapsz; i++) { | |
1207 | err |= sisusb_writeb(sisusb, | |
1208 | sisusb->vrambase + offset + | |
1209 | (2 * cmapsz) + i, | |
1210 | arg[cmapsz + i]); | |
1211 | if (err) | |
1212 | break; | |
1213 | } | |
1214 | else | |
1215 | for (i = 0; i < cmapsz; i++) { | |
1216 | err |= sisusb_readb(sisusb, | |
1217 | sisusb->vrambase + offset + | |
1218 | (2 * cmapsz) + i, | |
1219 | &arg[cmapsz + i]); | |
1220 | if (err) | |
1221 | break; | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | if (err) | |
1227 | goto font_op_error; | |
1228 | ||
1229 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ | |
1230 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x03); /* Write to planes 0+1 */ | |
1231 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x03); /* Memory mode a0-bf */ | |
1232 | if (set) | |
1233 | sisusb_setidxreg(sisusb, SISSR, 0x03, font_select); | |
1234 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset end */ | |
1235 | ||
1236 | if (err) | |
1237 | goto font_op_error; | |
1238 | ||
1239 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x00); /* Select plane read 0 */ | |
1240 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x10); /* Enable odd/even */ | |
1241 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x06); /* Address range b8-bf */ | |
1242 | ||
1243 | if (err) | |
1244 | goto font_op_error; | |
1245 | ||
1246 | if ((set) && (ch512 != sisusb->current_font_512)) { | |
1247 | ||
1248 | /* Font is shared among all our consoles. | |
1249 | * And so is the hi_font_mask. | |
1250 | */ | |
1251 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
1252 | struct vc_data *c = vc_cons[i].d; | |
1253 | if (c && c->vc_sw == &sisusb_con) | |
1254 | c->vc_hi_font_mask = ch512 ? 0x0800 : 0; | |
1255 | } | |
1256 | ||
1257 | sisusb->current_font_512 = ch512; | |
1258 | ||
1259 | /* color plane enable register: | |
1260 | 256-char: enable intensity bit | |
1261 | 512-char: disable intensity bit */ | |
1262 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1263 | sisusb_setreg(sisusb, SISAR, 0x12); | |
1264 | sisusb_setreg(sisusb, SISAR, ch512 ? 0x07 : 0x0f); | |
1265 | ||
1266 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1267 | sisusb_setreg(sisusb, SISAR, 0x20); | |
1268 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1269 | } | |
1270 | ||
1271 | if (dorecalc) { | |
1272 | ||
1273 | /* | |
1274 | * Adjust the screen to fit a font of a certain height | |
1275 | */ | |
1276 | ||
1277 | unsigned char ovr, vde, fsr; | |
1278 | int rows = 0, maxscan = 0; | |
1279 | ||
1280 | if (c) { | |
1281 | ||
1282 | /* Number of video rows */ | |
1283 | rows = c->vc_scan_lines / fh; | |
1284 | /* Scan lines to actually display-1 */ | |
1285 | maxscan = rows * fh - 1; | |
1286 | ||
1287 | /*printk(KERN_DEBUG "sisusb recalc rows %d maxscan %d fh %d sl %d\n", | |
1288 | rows, maxscan, fh, c->vc_scan_lines);*/ | |
1289 | ||
1290 | sisusb_getidxreg(sisusb, SISCR, 0x07, &ovr); | |
1291 | vde = maxscan & 0xff; | |
1292 | ovr = (ovr & 0xbd) | | |
1293 | ((maxscan & 0x100) >> 7) | | |
1294 | ((maxscan & 0x200) >> 3); | |
1295 | sisusb_setidxreg(sisusb, SISCR, 0x07, ovr); | |
1296 | sisusb_setidxreg(sisusb, SISCR, 0x12, vde); | |
1297 | ||
1298 | } | |
1299 | ||
1300 | sisusb_getidxreg(sisusb, SISCR, 0x09, &fsr); | |
1301 | fsr = (fsr & 0xe0) | (fh - 1); | |
1302 | sisusb_setidxreg(sisusb, SISCR, 0x09, fsr); | |
1303 | sisusb->current_font_height = fh; | |
1304 | ||
1305 | sisusb->sisusb_cursor_size_from = -1; | |
1306 | sisusb->sisusb_cursor_size_to = -1; | |
1307 | ||
1308 | } | |
1309 | ||
1310 | if (uplock) | |
2682d27c | 1311 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1312 | |
1313 | if (dorecalc && c) { | |
1314 | int i, rows = c->vc_scan_lines / fh; | |
1315 | ||
1316 | /* Now adjust our consoles' size */ | |
1317 | ||
1318 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
1319 | struct vc_data *vc = vc_cons[i].d; | |
1320 | ||
1321 | if (vc && vc->vc_sw == &sisusb_con) { | |
1322 | if (CON_IS_VISIBLE(vc)) { | |
1323 | vc->vc_sw->con_cursor(vc, CM_DRAW); | |
1324 | } | |
1325 | vc->vc_font.height = fh; | |
1326 | vc_resize(vc, 0, rows); | |
1327 | } | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | return 0; | |
1332 | ||
1333 | font_op_error: | |
1334 | if (uplock) | |
2682d27c | 1335 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1336 | |
1337 | return -EIO; | |
1338 | } | |
1339 | ||
1340 | /* Interface routine */ | |
1341 | static int | |
1342 | sisusbcon_font_set(struct vc_data *c, struct console_font *font, | |
1343 | unsigned flags) | |
1344 | { | |
1345 | struct sisusb_usb_data *sisusb; | |
1346 | unsigned charcount = font->charcount; | |
1347 | ||
1348 | if (font->width != 8 || (charcount != 256 && charcount != 512)) | |
1349 | return -EINVAL; | |
1350 | ||
1351 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
1352 | return -ENODEV; | |
1353 | ||
1354 | /* sisusb->lock is down */ | |
1355 | ||
1356 | /* Save the user-provided font into a buffer. This | |
1357 | * is used for restoring text mode after quitting | |
1358 | * from X and for the con_getfont routine. | |
1359 | */ | |
1360 | if (sisusb->font_backup) { | |
1361 | if (sisusb->font_backup_size < charcount) { | |
1362 | vfree(sisusb->font_backup); | |
1363 | sisusb->font_backup = NULL; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | if (!sisusb->font_backup) | |
1368 | sisusb->font_backup = vmalloc(charcount * 32); | |
1369 | ||
1370 | if (sisusb->font_backup) { | |
1371 | memcpy(sisusb->font_backup, font->data, charcount * 32); | |
1372 | sisusb->font_backup_size = charcount; | |
1373 | sisusb->font_backup_height = font->height; | |
1374 | sisusb->font_backup_512 = (charcount == 512) ? 1 : 0; | |
1375 | } | |
1376 | ||
1377 | /* do_font_op ups sisusb->lock */ | |
1378 | ||
1379 | return sisusbcon_do_font_op(sisusb, 1, 2, font->data, | |
1380 | 8192, (charcount == 512), | |
1381 | (!(flags & KD_FONT_FLAG_DONT_RECALC)) ? 1 : 0, | |
1382 | c, font->height, 1); | |
1383 | } | |
1384 | ||
1385 | /* Interface routine */ | |
1386 | static int | |
1387 | sisusbcon_font_get(struct vc_data *c, struct console_font *font) | |
1388 | { | |
1389 | struct sisusb_usb_data *sisusb; | |
1390 | ||
1391 | if (!(sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num))) | |
1392 | return -ENODEV; | |
1393 | ||
1394 | /* sisusb->lock is down */ | |
1395 | ||
1396 | font->width = 8; | |
1397 | font->height = c->vc_font.height; | |
1398 | font->charcount = 256; | |
1399 | ||
1400 | if (!font->data) { | |
2682d27c | 1401 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1402 | return 0; |
1403 | } | |
1404 | ||
1405 | if (!sisusb->font_backup) { | |
2682d27c | 1406 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1407 | return -ENODEV; |
1408 | } | |
1409 | ||
1410 | /* Copy 256 chars only, like vgacon */ | |
1411 | memcpy(font->data, sisusb->font_backup, 256 * 32); | |
1412 | ||
2682d27c | 1413 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1414 | |
1415 | return 0; | |
1416 | } | |
1417 | ||
1418 | /* | |
1419 | * The console `switch' structure for the sisusb console | |
1420 | */ | |
1421 | ||
1422 | static const struct consw sisusb_con = { | |
1423 | .owner = THIS_MODULE, | |
1424 | .con_startup = sisusbcon_startup, | |
1425 | .con_init = sisusbcon_init, | |
1426 | .con_deinit = sisusbcon_deinit, | |
1427 | .con_clear = sisusbcon_clear, | |
1428 | .con_putc = sisusbcon_putc, | |
1429 | .con_putcs = sisusbcon_putcs, | |
1430 | .con_cursor = sisusbcon_cursor, | |
1431 | .con_scroll = sisusbcon_scroll, | |
1432 | .con_bmove = sisusbcon_bmove, | |
1433 | .con_switch = sisusbcon_switch, | |
1434 | .con_blank = sisusbcon_blank, | |
1435 | .con_font_set = sisusbcon_font_set, | |
1436 | .con_font_get = sisusbcon_font_get, | |
1437 | .con_set_palette = sisusbcon_set_palette, | |
1438 | .con_scrolldelta = sisusbcon_scrolldelta, | |
1439 | .con_build_attr = sisusbcon_build_attr, | |
1440 | .con_invert_region = sisusbcon_invert_region, | |
1441 | .con_set_origin = sisusbcon_set_origin, | |
1442 | .con_save_screen = sisusbcon_save_screen, | |
1443 | .con_resize = sisusbcon_resize, | |
1444 | }; | |
1445 | ||
1446 | /* Our very own dummy console driver */ | |
1447 | ||
1448 | static const char *sisusbdummycon_startup(void) | |
1449 | { | |
1450 | return "SISUSBVGADUMMY"; | |
1451 | } | |
1452 | ||
1453 | static void sisusbdummycon_init(struct vc_data *vc, int init) | |
1454 | { | |
1455 | vc->vc_can_do_color = 1; | |
1456 | if (init) { | |
1457 | vc->vc_cols = 80; | |
1458 | vc->vc_rows = 25; | |
1459 | } else | |
1460 | vc_resize(vc, 80, 25); | |
1461 | } | |
1462 | ||
1463 | static int sisusbdummycon_dummy(void) | |
1464 | { | |
1465 | return 0; | |
1466 | } | |
1467 | ||
1468 | #define SISUSBCONDUMMY (void *)sisusbdummycon_dummy | |
1469 | ||
df47e533 | 1470 | static const struct consw sisusb_dummy_con = { |
1bbb4f20 TW |
1471 | .owner = THIS_MODULE, |
1472 | .con_startup = sisusbdummycon_startup, | |
1473 | .con_init = sisusbdummycon_init, | |
1474 | .con_deinit = SISUSBCONDUMMY, | |
1475 | .con_clear = SISUSBCONDUMMY, | |
1476 | .con_putc = SISUSBCONDUMMY, | |
1477 | .con_putcs = SISUSBCONDUMMY, | |
1478 | .con_cursor = SISUSBCONDUMMY, | |
1479 | .con_scroll = SISUSBCONDUMMY, | |
1480 | .con_bmove = SISUSBCONDUMMY, | |
1481 | .con_switch = SISUSBCONDUMMY, | |
1482 | .con_blank = SISUSBCONDUMMY, | |
1483 | .con_font_set = SISUSBCONDUMMY, | |
1484 | .con_font_get = SISUSBCONDUMMY, | |
1485 | .con_font_default = SISUSBCONDUMMY, | |
1486 | .con_font_copy = SISUSBCONDUMMY, | |
1487 | .con_set_palette = SISUSBCONDUMMY, | |
1488 | .con_scrolldelta = SISUSBCONDUMMY, | |
1489 | }; | |
1490 | ||
1491 | int | |
1492 | sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last) | |
1493 | { | |
1494 | int i, ret, minor = sisusb->minor; | |
1495 | ||
2682d27c | 1496 | mutex_lock(&disconnect_mutex); |
1bbb4f20 | 1497 | |
2682d27c | 1498 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
1499 | |
1500 | /* Erm.. that should not happen */ | |
1501 | if (sisusb->haveconsole || !sisusb->SiS_Pr) { | |
2682d27c AV |
1502 | mutex_unlock(&sisusb->lock); |
1503 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
1504 | return 1; |
1505 | } | |
1506 | ||
1507 | sisusb->con_first = first; | |
1508 | sisusb->con_last = last; | |
1509 | ||
1510 | if (first > last || | |
1511 | first > MAX_NR_CONSOLES || | |
1512 | last > MAX_NR_CONSOLES) { | |
2682d27c AV |
1513 | mutex_unlock(&sisusb->lock); |
1514 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
1515 | return 1; |
1516 | } | |
1517 | ||
1518 | /* If gfxcore not initialized or no consoles given, quit graciously */ | |
1519 | if (!sisusb->gfxinit || first < 1 || last < 1) { | |
2682d27c AV |
1520 | mutex_unlock(&sisusb->lock); |
1521 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
1522 | return 0; |
1523 | } | |
1524 | ||
1525 | sisusb->sisusb_cursor_loc = -1; | |
1526 | sisusb->sisusb_cursor_size_from = -1; | |
1527 | sisusb->sisusb_cursor_size_to = -1; | |
1528 | ||
1529 | /* Set up text mode (and upload default font) */ | |
1530 | if (sisusb_reset_text_mode(sisusb, 1)) { | |
2682d27c AV |
1531 | mutex_unlock(&sisusb->lock); |
1532 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
1533 | printk(KERN_ERR |
1534 | "sisusbvga[%d]: Failed to set up text mode\n", | |
1535 | minor); | |
1536 | return 1; | |
1537 | } | |
1538 | ||
1539 | /* Initialize some gfx registers */ | |
1540 | sisusb_initialize(sisusb); | |
1541 | ||
1542 | for (i = first - 1; i <= last - 1; i++) { | |
1543 | /* Save sisusb for our interface routines */ | |
1544 | mysisusbs[i] = sisusb; | |
1545 | } | |
1546 | ||
1547 | /* Initial console setup */ | |
1548 | sisusb->sisusb_num_columns = 80; | |
1549 | ||
1550 | /* Use a 32K buffer (matches b8000-bffff area) */ | |
1551 | sisusb->scrbuf_size = 32 * 1024; | |
1552 | ||
1553 | /* Allocate screen buffer */ | |
1554 | if (!(sisusb->scrbuf = (unsigned long)vmalloc(sisusb->scrbuf_size))) { | |
2682d27c AV |
1555 | mutex_unlock(&sisusb->lock); |
1556 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
1557 | printk(KERN_ERR |
1558 | "sisusbvga[%d]: Failed to allocate screen buffer\n", | |
1559 | minor); | |
1560 | return 1; | |
1561 | } | |
1562 | ||
2682d27c AV |
1563 | mutex_unlock(&sisusb->lock); |
1564 | mutex_unlock(&disconnect_mutex); | |
1bbb4f20 TW |
1565 | |
1566 | /* Now grab the desired console(s) */ | |
1567 | ret = take_over_console(&sisusb_con, first - 1, last - 1, 0); | |
1568 | ||
1569 | if (!ret) | |
1570 | sisusb->haveconsole = 1; | |
1571 | else { | |
1572 | for (i = first - 1; i <= last - 1; i++) | |
1573 | mysisusbs[i] = NULL; | |
1574 | } | |
1575 | ||
1576 | return ret; | |
1577 | } | |
1578 | ||
1579 | void | |
1580 | sisusb_console_exit(struct sisusb_usb_data *sisusb) | |
1581 | { | |
1582 | int i; | |
1583 | ||
1584 | /* This is called if the device is disconnected | |
1585 | * and while disconnect and lock semaphores | |
1586 | * are up. This should be save because we | |
1587 | * can't lose our sisusb any other way but by | |
1588 | * disconnection (and hence, the disconnect | |
1589 | * sema is for protecting all other access | |
1590 | * functions from disconnection, not the | |
1591 | * other way round). | |
1592 | */ | |
1593 | ||
1594 | /* Now what do we do in case of disconnection: | |
1595 | * One alternative would be to simply call | |
1596 | * give_up_console(). Nah, not a good idea. | |
1597 | * give_up_console() is obviously buggy as it | |
1598 | * only discards the consw pointer from the | |
1599 | * driver_map, but doesn't adapt vc->vc_sw | |
1600 | * of the affected consoles. Hence, the next | |
1601 | * call to any of the console functions will | |
1602 | * eventually take a trip to oops county. | |
1603 | * Also, give_up_console for some reason | |
1604 | * doesn't decrement our module refcount. | |
1605 | * Instead, we switch our consoles to a private | |
1606 | * dummy console. This, of course, keeps our | |
1607 | * refcount up as well, but it works perfectly. | |
1608 | */ | |
1609 | ||
1610 | if (sisusb->haveconsole) { | |
1611 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
1612 | if (sisusb->havethisconsole[i]) | |
1613 | take_over_console(&sisusb_dummy_con, i, i, 0); | |
1614 | /* At this point, con_deinit for all our | |
1615 | * consoles is executed by take_over_console(). | |
1616 | */ | |
1617 | sisusb->haveconsole = 0; | |
1618 | } | |
1619 | ||
1620 | vfree((void *)sisusb->scrbuf); | |
1621 | sisusb->scrbuf = 0; | |
1622 | ||
1623 | vfree(sisusb->font_backup); | |
1624 | sisusb->font_backup = NULL; | |
1625 | } | |
1626 | ||
1627 | void __init sisusb_init_concode(void) | |
1628 | { | |
1629 | int i; | |
1630 | ||
1631 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
1632 | mysisusbs[i] = NULL; | |
1633 | } | |
1634 | ||
1635 | #endif /* INCL_CON */ | |
1636 | ||
1637 | ||
1638 |