Commit | Line | Data |
---|---|---|
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 | ||
2682d27c | 50 | #include <linux/mutex.h> |
1bbb4f20 TW |
51 | #include <linux/module.h> |
52 | #include <linux/kernel.h> | |
53 | #include <linux/signal.h> | |
1bbb4f20 | 54 | #include <linux/fs.h> |
7b5cd5fe | 55 | #include <linux/usb.h> |
1bbb4f20 TW |
56 | #include <linux/tty.h> |
57 | #include <linux/console.h> | |
58 | #include <linux/string.h> | |
59 | #include <linux/kd.h> | |
60 | #include <linux/init.h> | |
1bbb4f20 TW |
61 | #include <linux/vt_kern.h> |
62 | #include <linux/selection.h> | |
63 | #include <linux/spinlock.h> | |
64 | #include <linux/kref.h> | |
1bbb4f20 TW |
65 | #include <linux/ioport.h> |
66 | #include <linux/interrupt.h> | |
67 | #include <linux/vmalloc.h> | |
68 | ||
69 | #include "sisusb.h" | |
df47e533 | 70 | #include "sisusb_init.h" |
1bbb4f20 TW |
71 | |
72 | #ifdef INCL_SISUSB_CON | |
1bbb4f20 TW |
73 | |
74 | #define sisusbcon_writew(val, addr) (*(addr) = (val)) | |
75 | #define sisusbcon_readw(addr) (*(addr)) | |
76 | #define sisusbcon_memmovew(d, s, c) memmove(d, s, c) | |
77 | #define sisusbcon_memcpyw(d, s, c) memcpy(d, s, c) | |
78 | ||
79 | /* vc_data -> sisusb conversion table */ | |
80 | static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES]; | |
81 | ||
82 | /* Forward declaration */ | |
83 | static const struct consw sisusb_con; | |
84 | ||
1bbb4f20 TW |
85 | static inline void |
86 | sisusbcon_memsetw(u16 *s, u16 c, unsigned int count) | |
87 | { | |
88 | count /= 2; | |
89 | while (count--) | |
90 | sisusbcon_writew(c, s++); | |
91 | } | |
92 | ||
93 | static inline void | |
94 | sisusb_initialize(struct sisusb_usb_data *sisusb) | |
95 | { | |
96 | /* Reset cursor and start address */ | |
97 | if (sisusb_setidxreg(sisusb, SISCR, 0x0c, 0x00)) | |
98 | return; | |
99 | if (sisusb_setidxreg(sisusb, SISCR, 0x0d, 0x00)) | |
100 | return; | |
101 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, 0x00)) | |
102 | return; | |
103 | sisusb_setidxreg(sisusb, SISCR, 0x0f, 0x00); | |
104 | } | |
105 | ||
106 | static inline void | |
107 | sisusbcon_set_start_address(struct sisusb_usb_data *sisusb, struct vc_data *c) | |
108 | { | |
109 | sisusb->cur_start_addr = (c->vc_visible_origin - sisusb->scrbuf) / 2; | |
110 | ||
111 | sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8)); | |
112 | sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff)); | |
113 | } | |
114 | ||
115 | void | |
116 | sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location) | |
117 | { | |
118 | if (sisusb->sisusb_cursor_loc == location) | |
119 | return; | |
120 | ||
121 | sisusb->sisusb_cursor_loc = location; | |
122 | ||
123 | /* Hardware bug: Text cursor appears twice or not at all | |
124 | * at some positions. Work around it with the cursor skew | |
125 | * bits. | |
126 | */ | |
127 | ||
128 | if ((location & 0x0007) == 0x0007) { | |
129 | sisusb->bad_cursor_pos = 1; | |
130 | location--; | |
131 | if (sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0x1f, 0x20)) | |
132 | return; | |
133 | } else if (sisusb->bad_cursor_pos) { | |
134 | if (sisusb_setidxregand(sisusb, SISCR, 0x0b, 0x1f)) | |
135 | return; | |
136 | sisusb->bad_cursor_pos = 0; | |
137 | } | |
138 | ||
139 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, (location >> 8))) | |
140 | return; | |
141 | sisusb_setidxreg(sisusb, SISCR, 0x0f, (location & 0xff)); | |
142 | } | |
143 | ||
144 | static inline struct sisusb_usb_data * | |
145 | sisusb_get_sisusb(unsigned short console) | |
146 | { | |
147 | return mysisusbs[console]; | |
148 | } | |
149 | ||
150 | static inline int | |
151 | sisusb_sisusb_valid(struct sisusb_usb_data *sisusb) | |
152 | { | |
153 | if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) | |
154 | return 0; | |
155 | ||
156 | return 1; | |
157 | } | |
158 | ||
159 | static struct sisusb_usb_data * | |
160 | sisusb_get_sisusb_lock_and_check(unsigned short console) | |
161 | { | |
162 | struct sisusb_usb_data *sisusb; | |
163 | ||
164 | /* We can't handle console calls in non-schedulable | |
165 | * context due to our locks and the USB transport. | |
166 | * So we simply ignore them. This should only affect | |
167 | * some calls to printk. | |
168 | */ | |
169 | if (in_atomic()) | |
170 | return NULL; | |
171 | ||
b87f5671 GKH |
172 | sisusb = sisusb_get_sisusb(console); |
173 | if (!sisusb) | |
1bbb4f20 TW |
174 | return NULL; |
175 | ||
2682d27c | 176 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
177 | |
178 | if (!sisusb_sisusb_valid(sisusb) || | |
179 | !sisusb->havethisconsole[console]) { | |
2682d27c | 180 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
181 | return NULL; |
182 | } | |
183 | ||
184 | return sisusb; | |
185 | } | |
186 | ||
187 | static int | |
188 | sisusb_is_inactive(struct vc_data *c, struct sisusb_usb_data *sisusb) | |
189 | { | |
190 | if (sisusb->is_gfx || | |
191 | sisusb->textmodedestroyed || | |
192 | c->vc_mode != KD_TEXT) | |
193 | return 1; | |
194 | ||
195 | return 0; | |
196 | } | |
197 | ||
198 | /* con_startup console interface routine */ | |
199 | static const char * | |
200 | sisusbcon_startup(void) | |
201 | { | |
202 | return "SISUSBCON"; | |
203 | } | |
204 | ||
205 | /* con_init console interface routine */ | |
206 | static void | |
207 | sisusbcon_init(struct vc_data *c, int init) | |
208 | { | |
209 | struct sisusb_usb_data *sisusb; | |
210 | int cols, rows; | |
211 | ||
155957f5 | 212 | /* This is called by do_take_over_console(), |
1bbb4f20 TW |
213 | * ie by us/under our control. It is |
214 | * only called after text mode and fonts | |
215 | * are set up/restored. | |
216 | */ | |
217 | ||
b87f5671 GKH |
218 | sisusb = sisusb_get_sisusb(c->vc_num); |
219 | if (!sisusb) | |
1bbb4f20 | 220 | return; |
1bbb4f20 | 221 | |
2682d27c | 222 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
223 | |
224 | if (!sisusb_sisusb_valid(sisusb)) { | |
2682d27c | 225 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
226 | return; |
227 | } | |
228 | ||
229 | c->vc_can_do_color = 1; | |
230 | ||
231 | c->vc_complement_mask = 0x7700; | |
232 | ||
233 | c->vc_hi_font_mask = sisusb->current_font_512 ? 0x0800 : 0; | |
234 | ||
235 | sisusb->haveconsole = 1; | |
236 | ||
237 | sisusb->havethisconsole[c->vc_num] = 1; | |
238 | ||
239 | /* We only support 640x400 */ | |
240 | c->vc_scan_lines = 400; | |
241 | ||
242 | c->vc_font.height = sisusb->current_font_height; | |
243 | ||
244 | /* We only support width = 8 */ | |
245 | cols = 80; | |
246 | rows = c->vc_scan_lines / c->vc_font.height; | |
247 | ||
248 | /* Increment usage count for our sisusb. | |
249 | * Doing so saves us from upping/downing | |
250 | * the disconnect semaphore; we can't | |
251 | * lose our sisusb until this is undone | |
252 | * in con_deinit. For all other console | |
253 | * interface functions, it suffices to | |
254 | * use sisusb->lock and do a quick check | |
255 | * of sisusb for device disconnection. | |
256 | */ | |
257 | kref_get(&sisusb->kref); | |
258 | ||
259 | if (!*c->vc_uni_pagedir_loc) | |
260 | con_set_default_unimap(c); | |
261 | ||
2682d27c | 262 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 263 | |
1bbb4f20 TW |
264 | if (init) { |
265 | c->vc_cols = cols; | |
266 | c->vc_rows = rows; | |
267 | } else | |
268 | vc_resize(c, cols, rows); | |
269 | } | |
270 | ||
271 | /* con_deinit console interface routine */ | |
272 | static void | |
273 | sisusbcon_deinit(struct vc_data *c) | |
274 | { | |
275 | struct sisusb_usb_data *sisusb; | |
276 | int i; | |
277 | ||
155957f5 | 278 | /* This is called by do_take_over_console() |
1bbb4f20 TW |
279 | * and others, ie not under our control. |
280 | */ | |
281 | ||
b87f5671 GKH |
282 | sisusb = sisusb_get_sisusb(c->vc_num); |
283 | if (!sisusb) | |
1bbb4f20 | 284 | return; |
1bbb4f20 | 285 | |
2682d27c | 286 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
287 | |
288 | /* Clear ourselves in mysisusbs */ | |
289 | mysisusbs[c->vc_num] = NULL; | |
290 | ||
291 | sisusb->havethisconsole[c->vc_num] = 0; | |
292 | ||
293 | /* Free our font buffer if all consoles are gone */ | |
294 | if (sisusb->font_backup) { | |
295 | for(i = 0; i < MAX_NR_CONSOLES; i++) { | |
296 | if (sisusb->havethisconsole[c->vc_num]) | |
297 | break; | |
298 | } | |
299 | if (i == MAX_NR_CONSOLES) { | |
300 | vfree(sisusb->font_backup); | |
301 | sisusb->font_backup = NULL; | |
302 | } | |
303 | } | |
304 | ||
2682d27c | 305 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
306 | |
307 | /* decrement the usage count on our sisusb */ | |
308 | kref_put(&sisusb->kref, sisusb_delete); | |
1bbb4f20 TW |
309 | } |
310 | ||
311 | /* interface routine */ | |
312 | static u8 | |
313 | sisusbcon_build_attr(struct vc_data *c, u8 color, u8 intensity, | |
31990a9d | 314 | u8 blink, u8 underline, u8 reverse, u8 unused) |
1bbb4f20 TW |
315 | { |
316 | u8 attr = color; | |
317 | ||
318 | if (underline) | |
319 | attr = (attr & 0xf0) | c->vc_ulcolor; | |
320 | else if (intensity == 0) | |
321 | attr = (attr & 0xf0) | c->vc_halfcolor; | |
322 | ||
323 | if (reverse) | |
324 | attr = ((attr) & 0x88) | | |
325 | ((((attr) >> 4) | | |
326 | ((attr) << 4)) & 0x77); | |
327 | ||
328 | if (blink) | |
329 | attr ^= 0x80; | |
330 | ||
331 | if (intensity == 2) | |
332 | attr ^= 0x08; | |
333 | ||
334 | return attr; | |
335 | } | |
336 | ||
337 | /* Interface routine */ | |
338 | static void | |
339 | sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count) | |
340 | { | |
341 | /* Invert a region. This is called with a pointer | |
342 | * to the console's internal screen buffer. So we | |
343 | * simply do the inversion there and rely on | |
344 | * a call to putc(s) to update the real screen. | |
345 | */ | |
346 | ||
347 | while (count--) { | |
348 | u16 a = sisusbcon_readw(p); | |
349 | ||
350 | a = ((a) & 0x88ff) | | |
351 | (((a) & 0x7000) >> 4) | | |
352 | (((a) & 0x0700) << 4); | |
353 | ||
354 | sisusbcon_writew(a, p++); | |
355 | } | |
356 | } | |
357 | ||
358 | #define SISUSB_VADDR(x,y) \ | |
359 | ((u16 *)c->vc_origin + \ | |
360 | (y) * sisusb->sisusb_num_columns + \ | |
361 | (x)) | |
362 | ||
363 | #define SISUSB_HADDR(x,y) \ | |
364 | ((u16 *)(sisusb->vrambase + (c->vc_origin - sisusb->scrbuf)) + \ | |
365 | (y) * sisusb->sisusb_num_columns + \ | |
366 | (x)) | |
367 | ||
368 | /* Interface routine */ | |
369 | static void | |
370 | sisusbcon_putc(struct vc_data *c, int ch, int y, int x) | |
371 | { | |
372 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 | 373 | |
b87f5671 GKH |
374 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
375 | if (!sisusb) | |
1bbb4f20 TW |
376 | return; |
377 | ||
378 | /* sisusb->lock is down */ | |
1bbb4f20 | 379 | if (sisusb_is_inactive(c, sisusb)) { |
2682d27c | 380 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
381 | return; |
382 | } | |
383 | ||
384 | ||
385 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), | |
3cc5be77 | 386 | (long)SISUSB_HADDR(x, y), 2); |
1bbb4f20 | 387 | |
2682d27c | 388 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
389 | } |
390 | ||
391 | /* Interface routine */ | |
392 | static void | |
393 | sisusbcon_putcs(struct vc_data *c, const unsigned short *s, | |
394 | int count, int y, int x) | |
395 | { | |
396 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 TW |
397 | u16 *dest; |
398 | int i; | |
399 | ||
b87f5671 GKH |
400 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
401 | if (!sisusb) | |
1bbb4f20 TW |
402 | return; |
403 | ||
404 | /* sisusb->lock is down */ | |
405 | ||
406 | /* Need to put the characters into the buffer ourselves, | |
407 | * because the vt does this AFTER calling us. | |
408 | */ | |
409 | ||
410 | dest = SISUSB_VADDR(x, y); | |
411 | ||
412 | for (i = count; i > 0; i--) | |
413 | sisusbcon_writew(sisusbcon_readw(s++), dest++); | |
414 | ||
415 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 416 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
417 | return; |
418 | } | |
419 | ||
420 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), | |
3cc5be77 | 421 | (long)SISUSB_HADDR(x, y), count * 2); |
1bbb4f20 | 422 | |
2682d27c | 423 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
424 | } |
425 | ||
426 | /* Interface routine */ | |
427 | static void | |
428 | sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width) | |
429 | { | |
430 | struct sisusb_usb_data *sisusb; | |
431 | u16 eattr = c->vc_video_erase_char; | |
1bbb4f20 TW |
432 | int i, length, cols; |
433 | u16 *dest; | |
434 | ||
435 | if (width <= 0 || height <= 0) | |
436 | return; | |
437 | ||
b87f5671 GKH |
438 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
439 | if (!sisusb) | |
1bbb4f20 TW |
440 | return; |
441 | ||
442 | /* sisusb->lock is down */ | |
443 | ||
444 | /* Need to clear buffer ourselves, because the vt does | |
445 | * this AFTER calling us. | |
446 | */ | |
447 | ||
448 | dest = SISUSB_VADDR(x, y); | |
449 | ||
450 | cols = sisusb->sisusb_num_columns; | |
451 | ||
452 | if (width > cols) | |
453 | width = cols; | |
454 | ||
455 | if (x == 0 && width >= c->vc_cols) { | |
456 | ||
457 | sisusbcon_memsetw(dest, eattr, height * cols * 2); | |
458 | ||
459 | } else { | |
460 | ||
461 | for (i = height; i > 0; i--, dest += cols) | |
462 | sisusbcon_memsetw(dest, eattr, width * 2); | |
463 | ||
464 | } | |
465 | ||
466 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 467 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
468 | return; |
469 | } | |
470 | ||
471 | length = ((height * cols) - x - (cols - width - x)) * 2; | |
472 | ||
473 | ||
474 | sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(x, y), | |
3cc5be77 | 475 | (long)SISUSB_HADDR(x, y), length); |
1bbb4f20 | 476 | |
2682d27c | 477 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
478 | } |
479 | ||
1bbb4f20 TW |
480 | /* interface routine */ |
481 | static int | |
482 | sisusbcon_switch(struct vc_data *c) | |
483 | { | |
484 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 TW |
485 | int length; |
486 | ||
487 | /* Returnvalue 0 means we have fully restored screen, | |
488 | * and vt doesn't need to call do_update_region(). | |
489 | * Returnvalue != 0 naturally means the opposite. | |
490 | */ | |
491 | ||
b87f5671 GKH |
492 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
493 | if (!sisusb) | |
1bbb4f20 TW |
494 | return 0; |
495 | ||
496 | /* sisusb->lock is down */ | |
497 | ||
498 | /* Don't write to screen if in gfx mode */ | |
499 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 500 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
501 | return 0; |
502 | } | |
503 | ||
504 | /* That really should not happen. It would mean we are | |
505 | * being called while the vc is using its private buffer | |
506 | * as origin. | |
507 | */ | |
508 | if (c->vc_origin == (unsigned long)c->vc_screenbuf) { | |
2682d27c | 509 | mutex_unlock(&sisusb->lock); |
7b5cd5fe | 510 | dev_dbg(&sisusb->sisusb_dev->dev, "ASSERT ORIGIN != SCREENBUF!\n"); |
1bbb4f20 TW |
511 | return 0; |
512 | } | |
513 | ||
514 | /* Check that we don't copy too much */ | |
515 | length = min((int)c->vc_screenbuf_size, | |
516 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); | |
517 | ||
518 | /* Restore the screen contents */ | |
519 | sisusbcon_memcpyw((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, | |
520 | length); | |
521 | ||
522 | sisusb_copy_memory(sisusb, (unsigned char *)c->vc_origin, | |
c067dfc6 | 523 | (long)SISUSB_HADDR(0, 0), |
3cc5be77 | 524 | length); |
1bbb4f20 | 525 | |
2682d27c | 526 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
527 | |
528 | return 0; | |
529 | } | |
530 | ||
531 | /* interface routine */ | |
532 | static void | |
533 | sisusbcon_save_screen(struct vc_data *c) | |
534 | { | |
535 | struct sisusb_usb_data *sisusb; | |
536 | int length; | |
537 | ||
538 | /* Save the current screen contents to vc's private | |
539 | * buffer. | |
540 | */ | |
541 | ||
b87f5671 GKH |
542 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
543 | if (!sisusb) | |
1bbb4f20 TW |
544 | return; |
545 | ||
546 | /* sisusb->lock is down */ | |
547 | ||
548 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 549 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
550 | return; |
551 | } | |
552 | ||
553 | /* Check that we don't copy too much */ | |
554 | length = min((int)c->vc_screenbuf_size, | |
555 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); | |
556 | ||
557 | /* Save the screen contents to vc's private buffer */ | |
558 | sisusbcon_memcpyw((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, | |
559 | length); | |
560 | ||
2682d27c | 561 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
562 | } |
563 | ||
564 | /* interface routine */ | |
709280da | 565 | static void |
8ede5cce | 566 | sisusbcon_set_palette(struct vc_data *c, const unsigned char *table) |
1bbb4f20 TW |
567 | { |
568 | struct sisusb_usb_data *sisusb; | |
569 | int i, j; | |
570 | ||
571 | /* Return value not used by vt */ | |
572 | ||
6ca8dfd7 | 573 | if (!con_is_visible(c)) |
709280da | 574 | return; |
1bbb4f20 | 575 | |
b87f5671 GKH |
576 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
577 | if (!sisusb) | |
709280da | 578 | return; |
1bbb4f20 TW |
579 | |
580 | /* sisusb->lock is down */ | |
581 | ||
582 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 583 | mutex_unlock(&sisusb->lock); |
709280da | 584 | return; |
1bbb4f20 TW |
585 | } |
586 | ||
587 | for (i = j = 0; i < 16; i++) { | |
588 | if (sisusb_setreg(sisusb, SISCOLIDX, table[i])) | |
589 | break; | |
590 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
591 | break; | |
592 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
593 | break; | |
594 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
595 | break; | |
596 | } | |
597 | ||
2682d27c | 598 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
599 | } |
600 | ||
601 | /* interface routine */ | |
602 | static int | |
603 | sisusbcon_blank(struct vc_data *c, int blank, int mode_switch) | |
604 | { | |
605 | struct sisusb_usb_data *sisusb; | |
606 | u8 sr1, cr17, pmreg, cr63; | |
1bbb4f20 TW |
607 | int ret = 0; |
608 | ||
b87f5671 GKH |
609 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
610 | if (!sisusb) | |
1bbb4f20 TW |
611 | return 0; |
612 | ||
613 | /* sisusb->lock is down */ | |
614 | ||
615 | if (mode_switch) | |
616 | sisusb->is_gfx = blank ? 1 : 0; | |
617 | ||
618 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 619 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
620 | return 0; |
621 | } | |
622 | ||
623 | switch (blank) { | |
624 | ||
625 | case 1: /* Normal blanking: Clear screen */ | |
626 | case -1: | |
627 | sisusbcon_memsetw((u16 *)c->vc_origin, | |
628 | c->vc_video_erase_char, | |
629 | c->vc_screenbuf_size); | |
630 | sisusb_copy_memory(sisusb, | |
631 | (unsigned char *)c->vc_origin, | |
632 | (u32)(sisusb->vrambase + | |
633 | (c->vc_origin - sisusb->scrbuf)), | |
3cc5be77 | 634 | c->vc_screenbuf_size); |
1bbb4f20 TW |
635 | sisusb->con_blanked = 1; |
636 | ret = 1; | |
637 | break; | |
638 | ||
639 | default: /* VESA blanking */ | |
640 | switch (blank) { | |
641 | case 0: /* Unblank */ | |
642 | sr1 = 0x00; | |
643 | cr17 = 0x80; | |
644 | pmreg = 0x00; | |
645 | cr63 = 0x00; | |
646 | ret = 1; | |
647 | sisusb->con_blanked = 0; | |
648 | break; | |
649 | case VESA_VSYNC_SUSPEND + 1: | |
650 | sr1 = 0x20; | |
651 | cr17 = 0x80; | |
652 | pmreg = 0x80; | |
653 | cr63 = 0x40; | |
654 | break; | |
655 | case VESA_HSYNC_SUSPEND + 1: | |
656 | sr1 = 0x20; | |
657 | cr17 = 0x80; | |
658 | pmreg = 0x40; | |
659 | cr63 = 0x40; | |
660 | break; | |
661 | case VESA_POWERDOWN + 1: | |
662 | sr1 = 0x20; | |
663 | cr17 = 0x00; | |
664 | pmreg = 0xc0; | |
665 | cr63 = 0x40; | |
666 | break; | |
667 | default: | |
2682d27c | 668 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
669 | return -EINVAL; |
670 | } | |
671 | ||
672 | sisusb_setidxregandor(sisusb, SISSR, 0x01, ~0x20, sr1); | |
673 | sisusb_setidxregandor(sisusb, SISCR, 0x17, 0x7f, cr17); | |
674 | sisusb_setidxregandor(sisusb, SISSR, 0x1f, 0x3f, pmreg); | |
675 | sisusb_setidxregandor(sisusb, SISCR, 0x63, 0xbf, cr63); | |
676 | ||
677 | } | |
678 | ||
2682d27c | 679 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
680 | |
681 | return ret; | |
682 | } | |
683 | ||
684 | /* interface routine */ | |
97293de9 | 685 | static void |
1bbb4f20 TW |
686 | sisusbcon_scrolldelta(struct vc_data *c, int lines) |
687 | { | |
688 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 | 689 | |
b87f5671 GKH |
690 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
691 | if (!sisusb) | |
97293de9 | 692 | return; |
1bbb4f20 TW |
693 | |
694 | /* sisusb->lock is down */ | |
695 | ||
696 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 697 | mutex_unlock(&sisusb->lock); |
97293de9 | 698 | return; |
1bbb4f20 TW |
699 | } |
700 | ||
35cc56f9 JS |
701 | vc_scrolldelta_helper(c, lines, sisusb->con_rolled_over, |
702 | (void *)sisusb->scrbuf, sisusb->scrbuf_size); | |
1bbb4f20 TW |
703 | |
704 | sisusbcon_set_start_address(sisusb, c); | |
705 | ||
2682d27c | 706 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
707 | } |
708 | ||
709 | /* Interface routine */ | |
710 | static void | |
711 | sisusbcon_cursor(struct vc_data *c, int mode) | |
712 | { | |
713 | struct sisusb_usb_data *sisusb; | |
714 | int from, to, baseline; | |
715 | ||
b87f5671 GKH |
716 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
717 | if (!sisusb) | |
1bbb4f20 TW |
718 | return; |
719 | ||
720 | /* sisusb->lock is down */ | |
721 | ||
722 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 723 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
724 | return; |
725 | } | |
726 | ||
727 | if (c->vc_origin != c->vc_visible_origin) { | |
728 | c->vc_visible_origin = c->vc_origin; | |
729 | sisusbcon_set_start_address(sisusb, c); | |
730 | } | |
731 | ||
732 | if (mode == CM_ERASE) { | |
733 | sisusb_setidxregor(sisusb, SISCR, 0x0a, 0x20); | |
734 | sisusb->sisusb_cursor_size_to = -1; | |
2682d27c | 735 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
736 | return; |
737 | } | |
738 | ||
739 | sisusb_set_cursor(sisusb, (c->vc_pos - sisusb->scrbuf) / 2); | |
740 | ||
741 | baseline = c->vc_font.height - (c->vc_font.height < 10 ? 1 : 2); | |
742 | ||
743 | switch (c->vc_cursor_type & 0x0f) { | |
744 | case CUR_BLOCK: from = 1; | |
745 | to = c->vc_font.height; | |
746 | break; | |
747 | case CUR_TWO_THIRDS: from = c->vc_font.height / 3; | |
748 | to = baseline; | |
749 | break; | |
750 | case CUR_LOWER_HALF: from = c->vc_font.height / 2; | |
751 | to = baseline; | |
752 | break; | |
753 | case CUR_LOWER_THIRD: from = (c->vc_font.height * 2) / 3; | |
754 | to = baseline; | |
755 | break; | |
756 | case CUR_NONE: from = 31; | |
757 | to = 30; | |
758 | break; | |
759 | default: | |
760 | case CUR_UNDERLINE: from = baseline - 1; | |
761 | to = baseline; | |
762 | break; | |
763 | } | |
764 | ||
765 | if (sisusb->sisusb_cursor_size_from != from || | |
766 | sisusb->sisusb_cursor_size_to != to) { | |
767 | ||
768 | sisusb_setidxreg(sisusb, SISCR, 0x0a, from); | |
769 | sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0, to); | |
770 | ||
771 | sisusb->sisusb_cursor_size_from = from; | |
772 | sisusb->sisusb_cursor_size_to = to; | |
773 | } | |
774 | ||
2682d27c | 775 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
776 | } |
777 | ||
d705ff38 | 778 | static bool |
1bbb4f20 | 779 | sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, |
d705ff38 JS |
780 | unsigned int t, unsigned int b, enum con_scroll dir, |
781 | unsigned int lines) | |
1bbb4f20 TW |
782 | { |
783 | int cols = sisusb->sisusb_num_columns; | |
784 | int length = ((b - t) * cols) * 2; | |
785 | u16 eattr = c->vc_video_erase_char; | |
1bbb4f20 TW |
786 | |
787 | /* sisusb->lock is down */ | |
788 | ||
789 | /* Scroll an area which does not match the | |
790 | * visible screen's dimensions. This needs | |
791 | * to be done separately, as it does not | |
792 | * use hardware panning. | |
793 | */ | |
794 | ||
795 | switch (dir) { | |
796 | ||
797 | case SM_UP: | |
798 | sisusbcon_memmovew(SISUSB_VADDR(0, t), | |
799 | SISUSB_VADDR(0, t + lines), | |
800 | (b - t - lines) * cols * 2); | |
801 | sisusbcon_memsetw(SISUSB_VADDR(0, b - lines), eattr, | |
802 | lines * cols * 2); | |
803 | break; | |
804 | ||
805 | case SM_DOWN: | |
806 | sisusbcon_memmovew(SISUSB_VADDR(0, t + lines), | |
807 | SISUSB_VADDR(0, t), | |
808 | (b - t - lines) * cols * 2); | |
809 | sisusbcon_memsetw(SISUSB_VADDR(0, t), eattr, | |
810 | lines * cols * 2); | |
811 | break; | |
812 | } | |
813 | ||
814 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(0, t), | |
3cc5be77 | 815 | (long)SISUSB_HADDR(0, t), length); |
1bbb4f20 | 816 | |
2682d27c | 817 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 818 | |
a25557f2 | 819 | return true; |
1bbb4f20 TW |
820 | } |
821 | ||
822 | /* Interface routine */ | |
d705ff38 JS |
823 | static bool |
824 | sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b, | |
825 | enum con_scroll dir, unsigned int lines) | |
1bbb4f20 TW |
826 | { |
827 | struct sisusb_usb_data *sisusb; | |
828 | u16 eattr = c->vc_video_erase_char; | |
1bbb4f20 TW |
829 | int copyall = 0; |
830 | unsigned long oldorigin; | |
831 | unsigned int delta = lines * c->vc_size_row; | |
832 | u32 originoffset; | |
833 | ||
834 | /* Returning != 0 means we have done the scrolling successfully. | |
835 | * Returning 0 makes vt do the scrolling on its own. | |
836 | * Note that con_scroll is only called if the console is | |
837 | * visible. In that case, the origin should be our buffer, | |
838 | * not the vt's private one. | |
839 | */ | |
840 | ||
841 | if (!lines) | |
d705ff38 | 842 | return true; |
1bbb4f20 | 843 | |
b87f5671 GKH |
844 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
845 | if (!sisusb) | |
d705ff38 | 846 | return false; |
1bbb4f20 TW |
847 | |
848 | /* sisusb->lock is down */ | |
849 | ||
850 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 851 | mutex_unlock(&sisusb->lock); |
d705ff38 | 852 | return false; |
1bbb4f20 TW |
853 | } |
854 | ||
855 | /* Special case */ | |
856 | if (t || b != c->vc_rows) | |
857 | return sisusbcon_scroll_area(c, sisusb, t, b, dir, lines); | |
858 | ||
859 | if (c->vc_origin != c->vc_visible_origin) { | |
860 | c->vc_visible_origin = c->vc_origin; | |
861 | sisusbcon_set_start_address(sisusb, c); | |
862 | } | |
863 | ||
864 | /* limit amount to maximum realistic size */ | |
865 | if (lines > c->vc_rows) | |
866 | lines = c->vc_rows; | |
867 | ||
868 | oldorigin = c->vc_origin; | |
869 | ||
870 | switch (dir) { | |
871 | ||
872 | case SM_UP: | |
873 | ||
874 | if (c->vc_scr_end + delta >= | |
875 | sisusb->scrbuf + sisusb->scrbuf_size) { | |
876 | sisusbcon_memcpyw((u16 *)sisusb->scrbuf, | |
877 | (u16 *)(oldorigin + delta), | |
878 | c->vc_screenbuf_size - delta); | |
879 | c->vc_origin = sisusb->scrbuf; | |
880 | sisusb->con_rolled_over = oldorigin - sisusb->scrbuf; | |
881 | copyall = 1; | |
882 | } else | |
883 | c->vc_origin += delta; | |
884 | ||
885 | sisusbcon_memsetw( | |
886 | (u16 *)(c->vc_origin + c->vc_screenbuf_size - delta), | |
887 | eattr, delta); | |
888 | ||
889 | break; | |
890 | ||
891 | case SM_DOWN: | |
892 | ||
893 | if (oldorigin - delta < sisusb->scrbuf) { | |
894 | sisusbcon_memmovew((u16 *)(sisusb->scrbuf + | |
895 | sisusb->scrbuf_size - | |
896 | c->vc_screenbuf_size + | |
897 | delta), | |
898 | (u16 *)oldorigin, | |
899 | c->vc_screenbuf_size - delta); | |
900 | c->vc_origin = sisusb->scrbuf + | |
901 | sisusb->scrbuf_size - | |
902 | c->vc_screenbuf_size; | |
903 | sisusb->con_rolled_over = 0; | |
904 | copyall = 1; | |
905 | } else | |
906 | c->vc_origin -= delta; | |
907 | ||
908 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
909 | ||
910 | scr_memsetw((u16 *)(c->vc_origin), eattr, delta); | |
911 | ||
912 | break; | |
913 | } | |
914 | ||
915 | originoffset = (u32)(c->vc_origin - sisusb->scrbuf); | |
916 | ||
917 | if (copyall) | |
918 | sisusb_copy_memory(sisusb, | |
919 | (char *)c->vc_origin, | |
920 | (u32)(sisusb->vrambase + originoffset), | |
3cc5be77 | 921 | c->vc_screenbuf_size); |
1bbb4f20 TW |
922 | else if (dir == SM_UP) |
923 | sisusb_copy_memory(sisusb, | |
924 | (char *)c->vc_origin + c->vc_screenbuf_size - delta, | |
925 | (u32)sisusb->vrambase + originoffset + | |
926 | c->vc_screenbuf_size - delta, | |
3cc5be77 | 927 | delta); |
1bbb4f20 TW |
928 | else |
929 | sisusb_copy_memory(sisusb, | |
930 | (char *)c->vc_origin, | |
931 | (u32)(sisusb->vrambase + originoffset), | |
3cc5be77 | 932 | delta); |
1bbb4f20 TW |
933 | |
934 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
935 | c->vc_visible_origin = c->vc_origin; | |
936 | ||
937 | sisusbcon_set_start_address(sisusb, c); | |
938 | ||
939 | c->vc_pos = c->vc_pos - oldorigin + c->vc_origin; | |
940 | ||
2682d27c | 941 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 942 | |
d705ff38 | 943 | return true; |
1bbb4f20 TW |
944 | } |
945 | ||
946 | /* Interface routine */ | |
947 | static int | |
948 | sisusbcon_set_origin(struct vc_data *c) | |
949 | { | |
950 | struct sisusb_usb_data *sisusb; | |
951 | ||
952 | /* Returning != 0 means we were successful. | |
953 | * Returning 0 will vt make to use its own | |
954 | * screenbuffer as the origin. | |
955 | */ | |
956 | ||
b87f5671 GKH |
957 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
958 | if (!sisusb) | |
1bbb4f20 TW |
959 | return 0; |
960 | ||
961 | /* sisusb->lock is down */ | |
962 | ||
963 | if (sisusb_is_inactive(c, sisusb) || sisusb->con_blanked) { | |
2682d27c | 964 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
965 | return 0; |
966 | } | |
967 | ||
968 | c->vc_origin = c->vc_visible_origin = sisusb->scrbuf; | |
969 | ||
970 | sisusbcon_set_start_address(sisusb, c); | |
971 | ||
972 | sisusb->con_rolled_over = 0; | |
973 | ||
2682d27c | 974 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 975 | |
7cdfe4dd | 976 | return true; |
1bbb4f20 TW |
977 | } |
978 | ||
979 | /* Interface routine */ | |
980 | static int | |
e400b6ec AD |
981 | sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows, |
982 | unsigned int user) | |
1bbb4f20 TW |
983 | { |
984 | struct sisusb_usb_data *sisusb; | |
985 | int fh; | |
986 | ||
b87f5671 GKH |
987 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
988 | if (!sisusb) | |
1bbb4f20 TW |
989 | return -ENODEV; |
990 | ||
991 | fh = sisusb->current_font_height; | |
992 | ||
2682d27c | 993 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
994 | |
995 | /* We are quite unflexible as regards resizing. The vt code | |
996 | * handles sizes where the line length isn't equal the pitch | |
997 | * quite badly. As regards the rows, our panning tricks only | |
998 | * work well if the number of rows equals the visible number | |
999 | * of rows. | |
1000 | */ | |
1001 | ||
1002 | if (newcols != 80 || c->vc_scan_lines / fh != newrows) | |
1003 | return -EINVAL; | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | int | |
1009 | sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot, | |
1010 | u8 *arg, int cmapsz, int ch512, int dorecalc, | |
1011 | struct vc_data *c, int fh, int uplock) | |
1012 | { | |
1013 | int font_select = 0x00, i, err = 0; | |
1014 | u32 offset = 0; | |
1015 | u8 dummy; | |
1016 | ||
1017 | /* sisusb->lock is down */ | |
1018 | ||
1019 | /* | |
1020 | * The default font is kept in slot 0. | |
1021 | * A user font is loaded in slot 2 (256 ch) | |
1022 | * or 2+3 (512 ch). | |
1023 | */ | |
1024 | ||
1025 | if ((slot != 0 && slot != 2) || !fh) { | |
1026 | if (uplock) | |
2682d27c | 1027 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1028 | return -EINVAL; |
1029 | } | |
1030 | ||
1031 | if (set) | |
1032 | sisusb->font_slot = slot; | |
1033 | ||
1034 | /* Default font is always 256 */ | |
1035 | if (slot == 0) | |
1036 | ch512 = 0; | |
1037 | else | |
1038 | offset = 4 * cmapsz; | |
1039 | ||
1040 | font_select = (slot == 0) ? 0x00 : (ch512 ? 0x0e : 0x0a); | |
1041 | ||
1042 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ | |
1043 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x04); /* Write to plane 2 */ | |
1044 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x07); /* Memory mode a0-bf */ | |
1045 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset */ | |
1046 | ||
1047 | if (err) | |
1048 | goto font_op_error; | |
1049 | ||
1050 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x03); /* Select plane read 2 */ | |
1051 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x00); /* Disable odd/even */ | |
1052 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x00); /* Address range a0-bf */ | |
1053 | ||
1054 | if (err) | |
1055 | goto font_op_error; | |
1056 | ||
1057 | if (arg) { | |
1058 | if (set) | |
1059 | for (i = 0; i < cmapsz; i++) { | |
1060 | err |= sisusb_writeb(sisusb, | |
1061 | sisusb->vrambase + offset + i, | |
1062 | arg[i]); | |
1063 | if (err) | |
1064 | break; | |
1065 | } | |
1066 | else | |
1067 | for (i = 0; i < cmapsz; i++) { | |
1068 | err |= sisusb_readb(sisusb, | |
1069 | sisusb->vrambase + offset + i, | |
1070 | &arg[i]); | |
1071 | if (err) | |
1072 | break; | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * In 512-character mode, the character map is not contiguous if | |
1077 | * we want to remain EGA compatible -- which we do | |
1078 | */ | |
1079 | ||
1080 | if (ch512) { | |
1081 | if (set) | |
1082 | for (i = 0; i < cmapsz; i++) { | |
1083 | err |= sisusb_writeb(sisusb, | |
1084 | sisusb->vrambase + offset + | |
1085 | (2 * cmapsz) + i, | |
1086 | arg[cmapsz + i]); | |
1087 | if (err) | |
1088 | break; | |
1089 | } | |
1090 | else | |
1091 | for (i = 0; i < cmapsz; i++) { | |
1092 | err |= sisusb_readb(sisusb, | |
1093 | sisusb->vrambase + offset + | |
1094 | (2 * cmapsz) + i, | |
1095 | &arg[cmapsz + i]); | |
1096 | if (err) | |
1097 | break; | |
1098 | } | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | if (err) | |
1103 | goto font_op_error; | |
1104 | ||
1105 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ | |
1106 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x03); /* Write to planes 0+1 */ | |
1107 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x03); /* Memory mode a0-bf */ | |
1108 | if (set) | |
1109 | sisusb_setidxreg(sisusb, SISSR, 0x03, font_select); | |
1110 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset end */ | |
1111 | ||
1112 | if (err) | |
1113 | goto font_op_error; | |
1114 | ||
1115 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x00); /* Select plane read 0 */ | |
1116 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x10); /* Enable odd/even */ | |
1117 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x06); /* Address range b8-bf */ | |
1118 | ||
1119 | if (err) | |
1120 | goto font_op_error; | |
1121 | ||
1122 | if ((set) && (ch512 != sisusb->current_font_512)) { | |
1123 | ||
1124 | /* Font is shared among all our consoles. | |
1125 | * And so is the hi_font_mask. | |
1126 | */ | |
1127 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
993e33b0 BP |
1128 | struct vc_data *d = vc_cons[i].d; |
1129 | if (d && d->vc_sw == &sisusb_con) | |
1130 | d->vc_hi_font_mask = ch512 ? 0x0800 : 0; | |
1bbb4f20 TW |
1131 | } |
1132 | ||
1133 | sisusb->current_font_512 = ch512; | |
1134 | ||
1135 | /* color plane enable register: | |
1136 | 256-char: enable intensity bit | |
1137 | 512-char: disable intensity bit */ | |
1138 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1139 | sisusb_setreg(sisusb, SISAR, 0x12); | |
1140 | sisusb_setreg(sisusb, SISAR, ch512 ? 0x07 : 0x0f); | |
1141 | ||
1142 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1143 | sisusb_setreg(sisusb, SISAR, 0x20); | |
1144 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1145 | } | |
1146 | ||
1147 | if (dorecalc) { | |
1148 | ||
1149 | /* | |
1150 | * Adjust the screen to fit a font of a certain height | |
1151 | */ | |
1152 | ||
1153 | unsigned char ovr, vde, fsr; | |
1154 | int rows = 0, maxscan = 0; | |
1155 | ||
1156 | if (c) { | |
1157 | ||
1158 | /* Number of video rows */ | |
1159 | rows = c->vc_scan_lines / fh; | |
1160 | /* Scan lines to actually display-1 */ | |
1161 | maxscan = rows * fh - 1; | |
1162 | ||
1163 | /*printk(KERN_DEBUG "sisusb recalc rows %d maxscan %d fh %d sl %d\n", | |
1164 | rows, maxscan, fh, c->vc_scan_lines);*/ | |
1165 | ||
1166 | sisusb_getidxreg(sisusb, SISCR, 0x07, &ovr); | |
1167 | vde = maxscan & 0xff; | |
1168 | ovr = (ovr & 0xbd) | | |
1169 | ((maxscan & 0x100) >> 7) | | |
1170 | ((maxscan & 0x200) >> 3); | |
1171 | sisusb_setidxreg(sisusb, SISCR, 0x07, ovr); | |
1172 | sisusb_setidxreg(sisusb, SISCR, 0x12, vde); | |
1173 | ||
1174 | } | |
1175 | ||
1176 | sisusb_getidxreg(sisusb, SISCR, 0x09, &fsr); | |
1177 | fsr = (fsr & 0xe0) | (fh - 1); | |
1178 | sisusb_setidxreg(sisusb, SISCR, 0x09, fsr); | |
1179 | sisusb->current_font_height = fh; | |
1180 | ||
1181 | sisusb->sisusb_cursor_size_from = -1; | |
1182 | sisusb->sisusb_cursor_size_to = -1; | |
1183 | ||
1184 | } | |
1185 | ||
1186 | if (uplock) | |
2682d27c | 1187 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1188 | |
1189 | if (dorecalc && c) { | |
993e33b0 | 1190 | int rows = c->vc_scan_lines / fh; |
1bbb4f20 TW |
1191 | |
1192 | /* Now adjust our consoles' size */ | |
1193 | ||
1194 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
1195 | struct vc_data *vc = vc_cons[i].d; | |
1196 | ||
1197 | if (vc && vc->vc_sw == &sisusb_con) { | |
6ca8dfd7 | 1198 | if (con_is_visible(vc)) { |
1bbb4f20 TW |
1199 | vc->vc_sw->con_cursor(vc, CM_DRAW); |
1200 | } | |
1201 | vc->vc_font.height = fh; | |
1202 | vc_resize(vc, 0, rows); | |
1203 | } | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | return 0; | |
1208 | ||
1209 | font_op_error: | |
1210 | if (uplock) | |
2682d27c | 1211 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1212 | |
1213 | return -EIO; | |
1214 | } | |
1215 | ||
1216 | /* Interface routine */ | |
1217 | static int | |
1218 | sisusbcon_font_set(struct vc_data *c, struct console_font *font, | |
1219 | unsigned flags) | |
1220 | { | |
1221 | struct sisusb_usb_data *sisusb; | |
1222 | unsigned charcount = font->charcount; | |
1223 | ||
1224 | if (font->width != 8 || (charcount != 256 && charcount != 512)) | |
1225 | return -EINVAL; | |
1226 | ||
b87f5671 GKH |
1227 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
1228 | if (!sisusb) | |
1bbb4f20 TW |
1229 | return -ENODEV; |
1230 | ||
1231 | /* sisusb->lock is down */ | |
1232 | ||
1233 | /* Save the user-provided font into a buffer. This | |
1234 | * is used for restoring text mode after quitting | |
1235 | * from X and for the con_getfont routine. | |
1236 | */ | |
1237 | if (sisusb->font_backup) { | |
1238 | if (sisusb->font_backup_size < charcount) { | |
1239 | vfree(sisusb->font_backup); | |
1240 | sisusb->font_backup = NULL; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | if (!sisusb->font_backup) | |
1245 | sisusb->font_backup = vmalloc(charcount * 32); | |
1246 | ||
1247 | if (sisusb->font_backup) { | |
1248 | memcpy(sisusb->font_backup, font->data, charcount * 32); | |
1249 | sisusb->font_backup_size = charcount; | |
1250 | sisusb->font_backup_height = font->height; | |
1251 | sisusb->font_backup_512 = (charcount == 512) ? 1 : 0; | |
1252 | } | |
1253 | ||
1254 | /* do_font_op ups sisusb->lock */ | |
1255 | ||
1256 | return sisusbcon_do_font_op(sisusb, 1, 2, font->data, | |
1257 | 8192, (charcount == 512), | |
1258 | (!(flags & KD_FONT_FLAG_DONT_RECALC)) ? 1 : 0, | |
1259 | c, font->height, 1); | |
1260 | } | |
1261 | ||
1262 | /* Interface routine */ | |
1263 | static int | |
1264 | sisusbcon_font_get(struct vc_data *c, struct console_font *font) | |
1265 | { | |
1266 | struct sisusb_usb_data *sisusb; | |
1267 | ||
b87f5671 GKH |
1268 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
1269 | if (!sisusb) | |
1bbb4f20 TW |
1270 | return -ENODEV; |
1271 | ||
1272 | /* sisusb->lock is down */ | |
1273 | ||
1274 | font->width = 8; | |
1275 | font->height = c->vc_font.height; | |
1276 | font->charcount = 256; | |
1277 | ||
1278 | if (!font->data) { | |
2682d27c | 1279 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1280 | return 0; |
1281 | } | |
1282 | ||
1283 | if (!sisusb->font_backup) { | |
2682d27c | 1284 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1285 | return -ENODEV; |
1286 | } | |
1287 | ||
1288 | /* Copy 256 chars only, like vgacon */ | |
1289 | memcpy(font->data, sisusb->font_backup, 256 * 32); | |
1290 | ||
2682d27c | 1291 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1292 | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | /* | |
1297 | * The console `switch' structure for the sisusb console | |
1298 | */ | |
1299 | ||
1300 | static const struct consw sisusb_con = { | |
1301 | .owner = THIS_MODULE, | |
1302 | .con_startup = sisusbcon_startup, | |
1303 | .con_init = sisusbcon_init, | |
1304 | .con_deinit = sisusbcon_deinit, | |
1305 | .con_clear = sisusbcon_clear, | |
1306 | .con_putc = sisusbcon_putc, | |
1307 | .con_putcs = sisusbcon_putcs, | |
1308 | .con_cursor = sisusbcon_cursor, | |
1309 | .con_scroll = sisusbcon_scroll, | |
1bbb4f20 TW |
1310 | .con_switch = sisusbcon_switch, |
1311 | .con_blank = sisusbcon_blank, | |
1312 | .con_font_set = sisusbcon_font_set, | |
1313 | .con_font_get = sisusbcon_font_get, | |
1314 | .con_set_palette = sisusbcon_set_palette, | |
1315 | .con_scrolldelta = sisusbcon_scrolldelta, | |
1316 | .con_build_attr = sisusbcon_build_attr, | |
1317 | .con_invert_region = sisusbcon_invert_region, | |
1318 | .con_set_origin = sisusbcon_set_origin, | |
1319 | .con_save_screen = sisusbcon_save_screen, | |
1320 | .con_resize = sisusbcon_resize, | |
1321 | }; | |
1322 | ||
1323 | /* Our very own dummy console driver */ | |
1324 | ||
1325 | static const char *sisusbdummycon_startup(void) | |
1326 | { | |
1327 | return "SISUSBVGADUMMY"; | |
1328 | } | |
1329 | ||
1330 | static void sisusbdummycon_init(struct vc_data *vc, int init) | |
1331 | { | |
1332 | vc->vc_can_do_color = 1; | |
1333 | if (init) { | |
1334 | vc->vc_cols = 80; | |
1335 | vc->vc_rows = 25; | |
1336 | } else | |
1337 | vc_resize(vc, 80, 25); | |
1338 | } | |
1339 | ||
1340 | static int sisusbdummycon_dummy(void) | |
1341 | { | |
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | #define SISUSBCONDUMMY (void *)sisusbdummycon_dummy | |
1346 | ||
df47e533 | 1347 | static const struct consw sisusb_dummy_con = { |
1bbb4f20 TW |
1348 | .owner = THIS_MODULE, |
1349 | .con_startup = sisusbdummycon_startup, | |
1350 | .con_init = sisusbdummycon_init, | |
1351 | .con_deinit = SISUSBCONDUMMY, | |
1352 | .con_clear = SISUSBCONDUMMY, | |
1353 | .con_putc = SISUSBCONDUMMY, | |
1354 | .con_putcs = SISUSBCONDUMMY, | |
1355 | .con_cursor = SISUSBCONDUMMY, | |
1356 | .con_scroll = SISUSBCONDUMMY, | |
1bbb4f20 TW |
1357 | .con_switch = SISUSBCONDUMMY, |
1358 | .con_blank = SISUSBCONDUMMY, | |
1359 | .con_font_set = SISUSBCONDUMMY, | |
1360 | .con_font_get = SISUSBCONDUMMY, | |
1361 | .con_font_default = SISUSBCONDUMMY, | |
1362 | .con_font_copy = SISUSBCONDUMMY, | |
1bbb4f20 TW |
1363 | }; |
1364 | ||
1365 | int | |
1366 | sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last) | |
1367 | { | |
7b5cd5fe | 1368 | int i, ret; |
1bbb4f20 | 1369 | |
2682d27c | 1370 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
1371 | |
1372 | /* Erm.. that should not happen */ | |
1373 | if (sisusb->haveconsole || !sisusb->SiS_Pr) { | |
2682d27c | 1374 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1375 | return 1; |
1376 | } | |
1377 | ||
1378 | sisusb->con_first = first; | |
1379 | sisusb->con_last = last; | |
1380 | ||
1381 | if (first > last || | |
1382 | first > MAX_NR_CONSOLES || | |
1383 | last > MAX_NR_CONSOLES) { | |
2682d27c | 1384 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1385 | return 1; |
1386 | } | |
1387 | ||
1388 | /* If gfxcore not initialized or no consoles given, quit graciously */ | |
1389 | if (!sisusb->gfxinit || first < 1 || last < 1) { | |
2682d27c | 1390 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1391 | return 0; |
1392 | } | |
1393 | ||
1394 | sisusb->sisusb_cursor_loc = -1; | |
1395 | sisusb->sisusb_cursor_size_from = -1; | |
1396 | sisusb->sisusb_cursor_size_to = -1; | |
1397 | ||
1398 | /* Set up text mode (and upload default font) */ | |
1399 | if (sisusb_reset_text_mode(sisusb, 1)) { | |
2682d27c | 1400 | mutex_unlock(&sisusb->lock); |
7b5cd5fe | 1401 | dev_err(&sisusb->sisusb_dev->dev, "Failed to set up text mode\n"); |
1bbb4f20 TW |
1402 | return 1; |
1403 | } | |
1404 | ||
1405 | /* Initialize some gfx registers */ | |
1406 | sisusb_initialize(sisusb); | |
1407 | ||
1408 | for (i = first - 1; i <= last - 1; i++) { | |
1409 | /* Save sisusb for our interface routines */ | |
1410 | mysisusbs[i] = sisusb; | |
1411 | } | |
1412 | ||
1413 | /* Initial console setup */ | |
1414 | sisusb->sisusb_num_columns = 80; | |
1415 | ||
1416 | /* Use a 32K buffer (matches b8000-bffff area) */ | |
1417 | sisusb->scrbuf_size = 32 * 1024; | |
1418 | ||
1419 | /* Allocate screen buffer */ | |
1420 | if (!(sisusb->scrbuf = (unsigned long)vmalloc(sisusb->scrbuf_size))) { | |
2682d27c | 1421 | mutex_unlock(&sisusb->lock); |
7b5cd5fe | 1422 | dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate screen buffer\n"); |
1bbb4f20 TW |
1423 | return 1; |
1424 | } | |
1425 | ||
2682d27c | 1426 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1427 | |
1428 | /* Now grab the desired console(s) */ | |
155957f5 WY |
1429 | console_lock(); |
1430 | ret = do_take_over_console(&sisusb_con, first - 1, last - 1, 0); | |
1431 | console_unlock(); | |
1bbb4f20 TW |
1432 | if (!ret) |
1433 | sisusb->haveconsole = 1; | |
1434 | else { | |
1435 | for (i = first - 1; i <= last - 1; i++) | |
1436 | mysisusbs[i] = NULL; | |
1437 | } | |
1438 | ||
1439 | return ret; | |
1440 | } | |
1441 | ||
1442 | void | |
1443 | sisusb_console_exit(struct sisusb_usb_data *sisusb) | |
1444 | { | |
1445 | int i; | |
1446 | ||
1447 | /* This is called if the device is disconnected | |
1448 | * and while disconnect and lock semaphores | |
1449 | * are up. This should be save because we | |
1450 | * can't lose our sisusb any other way but by | |
1451 | * disconnection (and hence, the disconnect | |
1452 | * sema is for protecting all other access | |
1453 | * functions from disconnection, not the | |
1454 | * other way round). | |
1455 | */ | |
1456 | ||
1457 | /* Now what do we do in case of disconnection: | |
1458 | * One alternative would be to simply call | |
1459 | * give_up_console(). Nah, not a good idea. | |
1460 | * give_up_console() is obviously buggy as it | |
1461 | * only discards the consw pointer from the | |
1462 | * driver_map, but doesn't adapt vc->vc_sw | |
1463 | * of the affected consoles. Hence, the next | |
1464 | * call to any of the console functions will | |
1465 | * eventually take a trip to oops county. | |
1466 | * Also, give_up_console for some reason | |
1467 | * doesn't decrement our module refcount. | |
1468 | * Instead, we switch our consoles to a private | |
1469 | * dummy console. This, of course, keeps our | |
1470 | * refcount up as well, but it works perfectly. | |
1471 | */ | |
1472 | ||
1473 | if (sisusb->haveconsole) { | |
1474 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
155957f5 WY |
1475 | if (sisusb->havethisconsole[i]) { |
1476 | console_lock(); | |
1477 | do_take_over_console(&sisusb_dummy_con, i, i, 0); | |
1478 | console_unlock(); | |
1bbb4f20 | 1479 | /* At this point, con_deinit for all our |
155957f5 | 1480 | * consoles is executed by do_take_over_console(). |
1bbb4f20 | 1481 | */ |
155957f5 | 1482 | } |
1bbb4f20 TW |
1483 | sisusb->haveconsole = 0; |
1484 | } | |
1485 | ||
1486 | vfree((void *)sisusb->scrbuf); | |
1487 | sisusb->scrbuf = 0; | |
1488 | ||
1489 | vfree(sisusb->font_backup); | |
1490 | sisusb->font_backup = NULL; | |
1491 | } | |
1492 | ||
1493 | void __init sisusb_init_concode(void) | |
1494 | { | |
1495 | int i; | |
1496 | ||
1497 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
1498 | mysisusbs[i] = NULL; | |
1499 | } | |
1500 | ||
1501 | #endif /* INCL_CON */ | |
1502 | ||
1503 | ||
1504 |