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5fd54ace | 1 | // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) |
1bbb4f20 TW |
2 | /* |
3 | * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles | |
4 | * | |
5 | * VGA text mode console part | |
6 | * | |
7 | * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria | |
8 | * | |
9 | * If distributed as part of the Linux kernel, this code is licensed under the | |
10 | * terms of the GPL v2. | |
11 | * | |
12 | * Otherwise, the following license terms apply: | |
13 | * | |
14 | * * Redistribution and use in source and binary forms, with or without | |
15 | * * modification, are permitted provided that the following conditions | |
16 | * * are met: | |
17 | * * 1) Redistributions of source code must retain the above copyright | |
18 | * * notice, this list of conditions and the following disclaimer. | |
19 | * * 2) Redistributions in binary form must reproduce the above copyright | |
20 | * * notice, this list of conditions and the following disclaimer in the | |
21 | * * documentation and/or other materials provided with the distribution. | |
22 | * * 3) The name of the author may not be used to endorse or promote products | |
23 | * * derived from this software without specific psisusbr written permission. | |
24 | * * | |
25 | * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR | |
26 | * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
27 | * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
28 | * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
29 | * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
30 | * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
31 | * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
32 | * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
33 | * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
34 | * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
35 | * | |
36 | * Author: Thomas Winischhofer <thomas@winischhofer.net> | |
37 | * | |
38 | * Portions based on vgacon.c which are | |
39 | * Created 28 Sep 1997 by Geert Uytterhoeven | |
40 | * Rewritten by Martin Mares <mj@ucw.cz>, July 1998 | |
41 | * based on code Copyright (C) 1991, 1992 Linus Torvalds | |
42 | * 1995 Jay Estabrook | |
43 | * | |
44 | * A note on using in_atomic() in here: We can't handle console | |
45 | * calls from non-schedulable context due to our USB-dependend | |
46 | * nature. For now, this driver just ignores any calls if it | |
47 | * detects this state. | |
48 | * | |
49 | */ | |
50 | ||
2682d27c | 51 | #include <linux/mutex.h> |
1bbb4f20 TW |
52 | #include <linux/module.h> |
53 | #include <linux/kernel.h> | |
54 | #include <linux/signal.h> | |
1bbb4f20 | 55 | #include <linux/fs.h> |
7b5cd5fe | 56 | #include <linux/usb.h> |
1bbb4f20 TW |
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> | |
1bbb4f20 TW |
62 | #include <linux/vt_kern.h> |
63 | #include <linux/selection.h> | |
64 | #include <linux/spinlock.h> | |
65 | #include <linux/kref.h> | |
1bbb4f20 TW |
66 | #include <linux/ioport.h> |
67 | #include <linux/interrupt.h> | |
68 | #include <linux/vmalloc.h> | |
69 | ||
70 | #include "sisusb.h" | |
df47e533 | 71 | #include "sisusb_init.h" |
1bbb4f20 TW |
72 | |
73 | #ifdef INCL_SISUSB_CON | |
1bbb4f20 TW |
74 | |
75 | #define sisusbcon_writew(val, addr) (*(addr) = (val)) | |
76 | #define sisusbcon_readw(addr) (*(addr)) | |
77 | #define sisusbcon_memmovew(d, s, c) memmove(d, s, c) | |
78 | #define sisusbcon_memcpyw(d, s, c) memcpy(d, s, c) | |
79 | ||
80 | /* vc_data -> sisusb conversion table */ | |
81 | static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES]; | |
82 | ||
83 | /* Forward declaration */ | |
84 | static const struct consw sisusb_con; | |
85 | ||
1bbb4f20 TW |
86 | static inline void |
87 | sisusbcon_memsetw(u16 *s, u16 c, unsigned int count) | |
88 | { | |
89 | count /= 2; | |
90 | while (count--) | |
91 | sisusbcon_writew(c, s++); | |
92 | } | |
93 | ||
94 | static inline void | |
95 | sisusb_initialize(struct sisusb_usb_data *sisusb) | |
96 | { | |
97 | /* Reset cursor and start address */ | |
98 | if (sisusb_setidxreg(sisusb, SISCR, 0x0c, 0x00)) | |
99 | return; | |
100 | if (sisusb_setidxreg(sisusb, SISCR, 0x0d, 0x00)) | |
101 | return; | |
102 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, 0x00)) | |
103 | return; | |
104 | sisusb_setidxreg(sisusb, SISCR, 0x0f, 0x00); | |
105 | } | |
106 | ||
107 | static inline void | |
108 | sisusbcon_set_start_address(struct sisusb_usb_data *sisusb, struct vc_data *c) | |
109 | { | |
110 | sisusb->cur_start_addr = (c->vc_visible_origin - sisusb->scrbuf) / 2; | |
111 | ||
112 | sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8)); | |
113 | sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff)); | |
114 | } | |
115 | ||
116 | void | |
117 | sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location) | |
118 | { | |
119 | if (sisusb->sisusb_cursor_loc == location) | |
120 | return; | |
121 | ||
122 | sisusb->sisusb_cursor_loc = location; | |
123 | ||
124 | /* Hardware bug: Text cursor appears twice or not at all | |
125 | * at some positions. Work around it with the cursor skew | |
126 | * bits. | |
127 | */ | |
128 | ||
129 | if ((location & 0x0007) == 0x0007) { | |
130 | sisusb->bad_cursor_pos = 1; | |
131 | location--; | |
132 | if (sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0x1f, 0x20)) | |
133 | return; | |
134 | } else if (sisusb->bad_cursor_pos) { | |
135 | if (sisusb_setidxregand(sisusb, SISCR, 0x0b, 0x1f)) | |
136 | return; | |
137 | sisusb->bad_cursor_pos = 0; | |
138 | } | |
139 | ||
140 | if (sisusb_setidxreg(sisusb, SISCR, 0x0e, (location >> 8))) | |
141 | return; | |
142 | sisusb_setidxreg(sisusb, SISCR, 0x0f, (location & 0xff)); | |
143 | } | |
144 | ||
145 | static inline struct sisusb_usb_data * | |
146 | sisusb_get_sisusb(unsigned short console) | |
147 | { | |
148 | return mysisusbs[console]; | |
149 | } | |
150 | ||
151 | static inline int | |
152 | sisusb_sisusb_valid(struct sisusb_usb_data *sisusb) | |
153 | { | |
154 | if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) | |
155 | return 0; | |
156 | ||
157 | return 1; | |
158 | } | |
159 | ||
160 | static struct sisusb_usb_data * | |
161 | sisusb_get_sisusb_lock_and_check(unsigned short console) | |
162 | { | |
163 | struct sisusb_usb_data *sisusb; | |
164 | ||
165 | /* We can't handle console calls in non-schedulable | |
166 | * context due to our locks and the USB transport. | |
167 | * So we simply ignore them. This should only affect | |
168 | * some calls to printk. | |
169 | */ | |
170 | if (in_atomic()) | |
171 | return NULL; | |
172 | ||
b87f5671 GKH |
173 | sisusb = sisusb_get_sisusb(console); |
174 | if (!sisusb) | |
1bbb4f20 TW |
175 | return NULL; |
176 | ||
2682d27c | 177 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
178 | |
179 | if (!sisusb_sisusb_valid(sisusb) || | |
180 | !sisusb->havethisconsole[console]) { | |
2682d27c | 181 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
182 | return NULL; |
183 | } | |
184 | ||
185 | return sisusb; | |
186 | } | |
187 | ||
188 | static int | |
189 | sisusb_is_inactive(struct vc_data *c, struct sisusb_usb_data *sisusb) | |
190 | { | |
191 | if (sisusb->is_gfx || | |
192 | sisusb->textmodedestroyed || | |
193 | c->vc_mode != KD_TEXT) | |
194 | return 1; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | /* con_startup console interface routine */ | |
200 | static const char * | |
201 | sisusbcon_startup(void) | |
202 | { | |
203 | return "SISUSBCON"; | |
204 | } | |
205 | ||
206 | /* con_init console interface routine */ | |
207 | static void | |
208 | sisusbcon_init(struct vc_data *c, int init) | |
209 | { | |
210 | struct sisusb_usb_data *sisusb; | |
211 | int cols, rows; | |
212 | ||
155957f5 | 213 | /* This is called by do_take_over_console(), |
1bbb4f20 TW |
214 | * ie by us/under our control. It is |
215 | * only called after text mode and fonts | |
216 | * are set up/restored. | |
217 | */ | |
218 | ||
b87f5671 GKH |
219 | sisusb = sisusb_get_sisusb(c->vc_num); |
220 | if (!sisusb) | |
1bbb4f20 | 221 | return; |
1bbb4f20 | 222 | |
2682d27c | 223 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
224 | |
225 | if (!sisusb_sisusb_valid(sisusb)) { | |
2682d27c | 226 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
227 | return; |
228 | } | |
229 | ||
230 | c->vc_can_do_color = 1; | |
231 | ||
232 | c->vc_complement_mask = 0x7700; | |
233 | ||
234 | c->vc_hi_font_mask = sisusb->current_font_512 ? 0x0800 : 0; | |
235 | ||
236 | sisusb->haveconsole = 1; | |
237 | ||
238 | sisusb->havethisconsole[c->vc_num] = 1; | |
239 | ||
240 | /* We only support 640x400 */ | |
241 | c->vc_scan_lines = 400; | |
242 | ||
243 | c->vc_font.height = sisusb->current_font_height; | |
244 | ||
245 | /* We only support width = 8 */ | |
246 | cols = 80; | |
247 | rows = c->vc_scan_lines / c->vc_font.height; | |
248 | ||
249 | /* Increment usage count for our sisusb. | |
250 | * Doing so saves us from upping/downing | |
251 | * the disconnect semaphore; we can't | |
252 | * lose our sisusb until this is undone | |
253 | * in con_deinit. For all other console | |
254 | * interface functions, it suffices to | |
255 | * use sisusb->lock and do a quick check | |
256 | * of sisusb for device disconnection. | |
257 | */ | |
258 | kref_get(&sisusb->kref); | |
259 | ||
260 | if (!*c->vc_uni_pagedir_loc) | |
261 | con_set_default_unimap(c); | |
262 | ||
2682d27c | 263 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 264 | |
1bbb4f20 TW |
265 | if (init) { |
266 | c->vc_cols = cols; | |
267 | c->vc_rows = rows; | |
268 | } else | |
269 | vc_resize(c, cols, rows); | |
270 | } | |
271 | ||
272 | /* con_deinit console interface routine */ | |
273 | static void | |
274 | sisusbcon_deinit(struct vc_data *c) | |
275 | { | |
276 | struct sisusb_usb_data *sisusb; | |
277 | int i; | |
278 | ||
155957f5 | 279 | /* This is called by do_take_over_console() |
1bbb4f20 TW |
280 | * and others, ie not under our control. |
281 | */ | |
282 | ||
b87f5671 GKH |
283 | sisusb = sisusb_get_sisusb(c->vc_num); |
284 | if (!sisusb) | |
1bbb4f20 | 285 | return; |
1bbb4f20 | 286 | |
2682d27c | 287 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
288 | |
289 | /* Clear ourselves in mysisusbs */ | |
290 | mysisusbs[c->vc_num] = NULL; | |
291 | ||
292 | sisusb->havethisconsole[c->vc_num] = 0; | |
293 | ||
294 | /* Free our font buffer if all consoles are gone */ | |
295 | if (sisusb->font_backup) { | |
296 | for(i = 0; i < MAX_NR_CONSOLES; i++) { | |
297 | if (sisusb->havethisconsole[c->vc_num]) | |
298 | break; | |
299 | } | |
300 | if (i == MAX_NR_CONSOLES) { | |
301 | vfree(sisusb->font_backup); | |
302 | sisusb->font_backup = NULL; | |
303 | } | |
304 | } | |
305 | ||
2682d27c | 306 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
307 | |
308 | /* decrement the usage count on our sisusb */ | |
309 | kref_put(&sisusb->kref, sisusb_delete); | |
1bbb4f20 TW |
310 | } |
311 | ||
312 | /* interface routine */ | |
313 | static u8 | |
314 | sisusbcon_build_attr(struct vc_data *c, u8 color, u8 intensity, | |
31990a9d | 315 | u8 blink, u8 underline, u8 reverse, u8 unused) |
1bbb4f20 TW |
316 | { |
317 | u8 attr = color; | |
318 | ||
319 | if (underline) | |
320 | attr = (attr & 0xf0) | c->vc_ulcolor; | |
321 | else if (intensity == 0) | |
322 | attr = (attr & 0xf0) | c->vc_halfcolor; | |
323 | ||
324 | if (reverse) | |
325 | attr = ((attr) & 0x88) | | |
326 | ((((attr) >> 4) | | |
327 | ((attr) << 4)) & 0x77); | |
328 | ||
329 | if (blink) | |
330 | attr ^= 0x80; | |
331 | ||
332 | if (intensity == 2) | |
333 | attr ^= 0x08; | |
334 | ||
335 | return attr; | |
336 | } | |
337 | ||
338 | /* Interface routine */ | |
339 | static void | |
340 | sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count) | |
341 | { | |
342 | /* Invert a region. This is called with a pointer | |
343 | * to the console's internal screen buffer. So we | |
344 | * simply do the inversion there and rely on | |
345 | * a call to putc(s) to update the real screen. | |
346 | */ | |
347 | ||
348 | while (count--) { | |
349 | u16 a = sisusbcon_readw(p); | |
350 | ||
351 | a = ((a) & 0x88ff) | | |
352 | (((a) & 0x7000) >> 4) | | |
353 | (((a) & 0x0700) << 4); | |
354 | ||
355 | sisusbcon_writew(a, p++); | |
356 | } | |
357 | } | |
358 | ||
359 | #define SISUSB_VADDR(x,y) \ | |
360 | ((u16 *)c->vc_origin + \ | |
361 | (y) * sisusb->sisusb_num_columns + \ | |
362 | (x)) | |
363 | ||
364 | #define SISUSB_HADDR(x,y) \ | |
365 | ((u16 *)(sisusb->vrambase + (c->vc_origin - sisusb->scrbuf)) + \ | |
366 | (y) * sisusb->sisusb_num_columns + \ | |
367 | (x)) | |
368 | ||
369 | /* Interface routine */ | |
370 | static void | |
371 | sisusbcon_putc(struct vc_data *c, int ch, int y, int x) | |
372 | { | |
373 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 | 374 | |
b87f5671 GKH |
375 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
376 | if (!sisusb) | |
1bbb4f20 TW |
377 | return; |
378 | ||
379 | /* sisusb->lock is down */ | |
1bbb4f20 | 380 | if (sisusb_is_inactive(c, sisusb)) { |
2682d27c | 381 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
382 | return; |
383 | } | |
384 | ||
385 | ||
386 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), | |
3cc5be77 | 387 | (long)SISUSB_HADDR(x, y), 2); |
1bbb4f20 | 388 | |
2682d27c | 389 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
390 | } |
391 | ||
392 | /* Interface routine */ | |
393 | static void | |
394 | sisusbcon_putcs(struct vc_data *c, const unsigned short *s, | |
395 | int count, int y, int x) | |
396 | { | |
397 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 TW |
398 | u16 *dest; |
399 | int i; | |
400 | ||
b87f5671 GKH |
401 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
402 | if (!sisusb) | |
1bbb4f20 TW |
403 | return; |
404 | ||
405 | /* sisusb->lock is down */ | |
406 | ||
407 | /* Need to put the characters into the buffer ourselves, | |
408 | * because the vt does this AFTER calling us. | |
409 | */ | |
410 | ||
411 | dest = SISUSB_VADDR(x, y); | |
412 | ||
413 | for (i = count; i > 0; i--) | |
414 | sisusbcon_writew(sisusbcon_readw(s++), dest++); | |
415 | ||
416 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 417 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
418 | return; |
419 | } | |
420 | ||
421 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(x, y), | |
3cc5be77 | 422 | (long)SISUSB_HADDR(x, y), count * 2); |
1bbb4f20 | 423 | |
2682d27c | 424 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
425 | } |
426 | ||
427 | /* Interface routine */ | |
428 | static void | |
429 | sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width) | |
430 | { | |
431 | struct sisusb_usb_data *sisusb; | |
432 | u16 eattr = c->vc_video_erase_char; | |
1bbb4f20 TW |
433 | int i, length, cols; |
434 | u16 *dest; | |
435 | ||
436 | if (width <= 0 || height <= 0) | |
437 | return; | |
438 | ||
b87f5671 GKH |
439 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
440 | if (!sisusb) | |
1bbb4f20 TW |
441 | return; |
442 | ||
443 | /* sisusb->lock is down */ | |
444 | ||
445 | /* Need to clear buffer ourselves, because the vt does | |
446 | * this AFTER calling us. | |
447 | */ | |
448 | ||
449 | dest = SISUSB_VADDR(x, y); | |
450 | ||
451 | cols = sisusb->sisusb_num_columns; | |
452 | ||
453 | if (width > cols) | |
454 | width = cols; | |
455 | ||
456 | if (x == 0 && width >= c->vc_cols) { | |
457 | ||
458 | sisusbcon_memsetw(dest, eattr, height * cols * 2); | |
459 | ||
460 | } else { | |
461 | ||
462 | for (i = height; i > 0; i--, dest += cols) | |
463 | sisusbcon_memsetw(dest, eattr, width * 2); | |
464 | ||
465 | } | |
466 | ||
467 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 468 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
469 | return; |
470 | } | |
471 | ||
472 | length = ((height * cols) - x - (cols - width - x)) * 2; | |
473 | ||
474 | ||
475 | sisusb_copy_memory(sisusb, (unsigned char *)SISUSB_VADDR(x, y), | |
3cc5be77 | 476 | (long)SISUSB_HADDR(x, y), length); |
1bbb4f20 | 477 | |
2682d27c | 478 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
479 | } |
480 | ||
1bbb4f20 TW |
481 | /* interface routine */ |
482 | static int | |
483 | sisusbcon_switch(struct vc_data *c) | |
484 | { | |
485 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 TW |
486 | int length; |
487 | ||
488 | /* Returnvalue 0 means we have fully restored screen, | |
489 | * and vt doesn't need to call do_update_region(). | |
490 | * Returnvalue != 0 naturally means the opposite. | |
491 | */ | |
492 | ||
b87f5671 GKH |
493 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
494 | if (!sisusb) | |
1bbb4f20 TW |
495 | return 0; |
496 | ||
497 | /* sisusb->lock is down */ | |
498 | ||
499 | /* Don't write to screen if in gfx mode */ | |
500 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 501 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
502 | return 0; |
503 | } | |
504 | ||
505 | /* That really should not happen. It would mean we are | |
506 | * being called while the vc is using its private buffer | |
507 | * as origin. | |
508 | */ | |
509 | if (c->vc_origin == (unsigned long)c->vc_screenbuf) { | |
2682d27c | 510 | mutex_unlock(&sisusb->lock); |
7b5cd5fe | 511 | dev_dbg(&sisusb->sisusb_dev->dev, "ASSERT ORIGIN != SCREENBUF!\n"); |
1bbb4f20 TW |
512 | return 0; |
513 | } | |
514 | ||
515 | /* Check that we don't copy too much */ | |
516 | length = min((int)c->vc_screenbuf_size, | |
517 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); | |
518 | ||
519 | /* Restore the screen contents */ | |
520 | sisusbcon_memcpyw((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, | |
521 | length); | |
522 | ||
523 | sisusb_copy_memory(sisusb, (unsigned char *)c->vc_origin, | |
c067dfc6 | 524 | (long)SISUSB_HADDR(0, 0), |
3cc5be77 | 525 | length); |
1bbb4f20 | 526 | |
2682d27c | 527 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
528 | |
529 | return 0; | |
530 | } | |
531 | ||
532 | /* interface routine */ | |
533 | static void | |
534 | sisusbcon_save_screen(struct vc_data *c) | |
535 | { | |
536 | struct sisusb_usb_data *sisusb; | |
537 | int length; | |
538 | ||
539 | /* Save the current screen contents to vc's private | |
540 | * buffer. | |
541 | */ | |
542 | ||
b87f5671 GKH |
543 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
544 | if (!sisusb) | |
1bbb4f20 TW |
545 | return; |
546 | ||
547 | /* sisusb->lock is down */ | |
548 | ||
549 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 550 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
551 | return; |
552 | } | |
553 | ||
554 | /* Check that we don't copy too much */ | |
555 | length = min((int)c->vc_screenbuf_size, | |
556 | (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin)); | |
557 | ||
558 | /* Save the screen contents to vc's private buffer */ | |
559 | sisusbcon_memcpyw((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, | |
560 | length); | |
561 | ||
2682d27c | 562 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
563 | } |
564 | ||
565 | /* interface routine */ | |
709280da | 566 | static void |
8ede5cce | 567 | sisusbcon_set_palette(struct vc_data *c, const unsigned char *table) |
1bbb4f20 TW |
568 | { |
569 | struct sisusb_usb_data *sisusb; | |
570 | int i, j; | |
571 | ||
572 | /* Return value not used by vt */ | |
573 | ||
6ca8dfd7 | 574 | if (!con_is_visible(c)) |
709280da | 575 | return; |
1bbb4f20 | 576 | |
b87f5671 GKH |
577 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
578 | if (!sisusb) | |
709280da | 579 | return; |
1bbb4f20 TW |
580 | |
581 | /* sisusb->lock is down */ | |
582 | ||
583 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 584 | mutex_unlock(&sisusb->lock); |
709280da | 585 | return; |
1bbb4f20 TW |
586 | } |
587 | ||
588 | for (i = j = 0; i < 16; i++) { | |
589 | if (sisusb_setreg(sisusb, SISCOLIDX, table[i])) | |
590 | break; | |
591 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
592 | break; | |
593 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
594 | break; | |
595 | if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2)) | |
596 | break; | |
597 | } | |
598 | ||
2682d27c | 599 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
600 | } |
601 | ||
602 | /* interface routine */ | |
603 | static int | |
604 | sisusbcon_blank(struct vc_data *c, int blank, int mode_switch) | |
605 | { | |
606 | struct sisusb_usb_data *sisusb; | |
607 | u8 sr1, cr17, pmreg, cr63; | |
1bbb4f20 TW |
608 | int ret = 0; |
609 | ||
b87f5671 GKH |
610 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
611 | if (!sisusb) | |
1bbb4f20 TW |
612 | return 0; |
613 | ||
614 | /* sisusb->lock is down */ | |
615 | ||
616 | if (mode_switch) | |
617 | sisusb->is_gfx = blank ? 1 : 0; | |
618 | ||
619 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 620 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
621 | return 0; |
622 | } | |
623 | ||
624 | switch (blank) { | |
625 | ||
626 | case 1: /* Normal blanking: Clear screen */ | |
627 | case -1: | |
628 | sisusbcon_memsetw((u16 *)c->vc_origin, | |
629 | c->vc_video_erase_char, | |
630 | c->vc_screenbuf_size); | |
631 | sisusb_copy_memory(sisusb, | |
632 | (unsigned char *)c->vc_origin, | |
633 | (u32)(sisusb->vrambase + | |
634 | (c->vc_origin - sisusb->scrbuf)), | |
3cc5be77 | 635 | c->vc_screenbuf_size); |
1bbb4f20 TW |
636 | sisusb->con_blanked = 1; |
637 | ret = 1; | |
638 | break; | |
639 | ||
640 | default: /* VESA blanking */ | |
641 | switch (blank) { | |
642 | case 0: /* Unblank */ | |
643 | sr1 = 0x00; | |
644 | cr17 = 0x80; | |
645 | pmreg = 0x00; | |
646 | cr63 = 0x00; | |
647 | ret = 1; | |
648 | sisusb->con_blanked = 0; | |
649 | break; | |
650 | case VESA_VSYNC_SUSPEND + 1: | |
651 | sr1 = 0x20; | |
652 | cr17 = 0x80; | |
653 | pmreg = 0x80; | |
654 | cr63 = 0x40; | |
655 | break; | |
656 | case VESA_HSYNC_SUSPEND + 1: | |
657 | sr1 = 0x20; | |
658 | cr17 = 0x80; | |
659 | pmreg = 0x40; | |
660 | cr63 = 0x40; | |
661 | break; | |
662 | case VESA_POWERDOWN + 1: | |
663 | sr1 = 0x20; | |
664 | cr17 = 0x00; | |
665 | pmreg = 0xc0; | |
666 | cr63 = 0x40; | |
667 | break; | |
668 | default: | |
2682d27c | 669 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
670 | return -EINVAL; |
671 | } | |
672 | ||
673 | sisusb_setidxregandor(sisusb, SISSR, 0x01, ~0x20, sr1); | |
674 | sisusb_setidxregandor(sisusb, SISCR, 0x17, 0x7f, cr17); | |
675 | sisusb_setidxregandor(sisusb, SISSR, 0x1f, 0x3f, pmreg); | |
676 | sisusb_setidxregandor(sisusb, SISCR, 0x63, 0xbf, cr63); | |
677 | ||
678 | } | |
679 | ||
2682d27c | 680 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
681 | |
682 | return ret; | |
683 | } | |
684 | ||
685 | /* interface routine */ | |
97293de9 | 686 | static void |
1bbb4f20 TW |
687 | sisusbcon_scrolldelta(struct vc_data *c, int lines) |
688 | { | |
689 | struct sisusb_usb_data *sisusb; | |
1bbb4f20 | 690 | |
b87f5671 GKH |
691 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
692 | if (!sisusb) | |
97293de9 | 693 | return; |
1bbb4f20 TW |
694 | |
695 | /* sisusb->lock is down */ | |
696 | ||
697 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 698 | mutex_unlock(&sisusb->lock); |
97293de9 | 699 | return; |
1bbb4f20 TW |
700 | } |
701 | ||
35cc56f9 JS |
702 | vc_scrolldelta_helper(c, lines, sisusb->con_rolled_over, |
703 | (void *)sisusb->scrbuf, sisusb->scrbuf_size); | |
1bbb4f20 TW |
704 | |
705 | sisusbcon_set_start_address(sisusb, c); | |
706 | ||
2682d27c | 707 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
708 | } |
709 | ||
710 | /* Interface routine */ | |
711 | static void | |
712 | sisusbcon_cursor(struct vc_data *c, int mode) | |
713 | { | |
714 | struct sisusb_usb_data *sisusb; | |
715 | int from, to, baseline; | |
716 | ||
b87f5671 GKH |
717 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
718 | if (!sisusb) | |
1bbb4f20 TW |
719 | return; |
720 | ||
721 | /* sisusb->lock is down */ | |
722 | ||
723 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 724 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
725 | return; |
726 | } | |
727 | ||
728 | if (c->vc_origin != c->vc_visible_origin) { | |
729 | c->vc_visible_origin = c->vc_origin; | |
730 | sisusbcon_set_start_address(sisusb, c); | |
731 | } | |
732 | ||
733 | if (mode == CM_ERASE) { | |
734 | sisusb_setidxregor(sisusb, SISCR, 0x0a, 0x20); | |
735 | sisusb->sisusb_cursor_size_to = -1; | |
2682d27c | 736 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
737 | return; |
738 | } | |
739 | ||
740 | sisusb_set_cursor(sisusb, (c->vc_pos - sisusb->scrbuf) / 2); | |
741 | ||
742 | baseline = c->vc_font.height - (c->vc_font.height < 10 ? 1 : 2); | |
743 | ||
744 | switch (c->vc_cursor_type & 0x0f) { | |
745 | case CUR_BLOCK: from = 1; | |
746 | to = c->vc_font.height; | |
747 | break; | |
748 | case CUR_TWO_THIRDS: from = c->vc_font.height / 3; | |
749 | to = baseline; | |
750 | break; | |
751 | case CUR_LOWER_HALF: from = c->vc_font.height / 2; | |
752 | to = baseline; | |
753 | break; | |
754 | case CUR_LOWER_THIRD: from = (c->vc_font.height * 2) / 3; | |
755 | to = baseline; | |
756 | break; | |
757 | case CUR_NONE: from = 31; | |
758 | to = 30; | |
759 | break; | |
760 | default: | |
761 | case CUR_UNDERLINE: from = baseline - 1; | |
762 | to = baseline; | |
763 | break; | |
764 | } | |
765 | ||
766 | if (sisusb->sisusb_cursor_size_from != from || | |
767 | sisusb->sisusb_cursor_size_to != to) { | |
768 | ||
769 | sisusb_setidxreg(sisusb, SISCR, 0x0a, from); | |
770 | sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0, to); | |
771 | ||
772 | sisusb->sisusb_cursor_size_from = from; | |
773 | sisusb->sisusb_cursor_size_to = to; | |
774 | } | |
775 | ||
2682d27c | 776 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
777 | } |
778 | ||
d705ff38 | 779 | static bool |
1bbb4f20 | 780 | sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, |
d705ff38 JS |
781 | unsigned int t, unsigned int b, enum con_scroll dir, |
782 | unsigned int lines) | |
1bbb4f20 TW |
783 | { |
784 | int cols = sisusb->sisusb_num_columns; | |
785 | int length = ((b - t) * cols) * 2; | |
786 | u16 eattr = c->vc_video_erase_char; | |
1bbb4f20 TW |
787 | |
788 | /* sisusb->lock is down */ | |
789 | ||
790 | /* Scroll an area which does not match the | |
791 | * visible screen's dimensions. This needs | |
792 | * to be done separately, as it does not | |
793 | * use hardware panning. | |
794 | */ | |
795 | ||
796 | switch (dir) { | |
797 | ||
798 | case SM_UP: | |
799 | sisusbcon_memmovew(SISUSB_VADDR(0, t), | |
800 | SISUSB_VADDR(0, t + lines), | |
801 | (b - t - lines) * cols * 2); | |
802 | sisusbcon_memsetw(SISUSB_VADDR(0, b - lines), eattr, | |
803 | lines * cols * 2); | |
804 | break; | |
805 | ||
806 | case SM_DOWN: | |
807 | sisusbcon_memmovew(SISUSB_VADDR(0, t + lines), | |
808 | SISUSB_VADDR(0, t), | |
809 | (b - t - lines) * cols * 2); | |
810 | sisusbcon_memsetw(SISUSB_VADDR(0, t), eattr, | |
811 | lines * cols * 2); | |
812 | break; | |
813 | } | |
814 | ||
815 | sisusb_copy_memory(sisusb, (char *)SISUSB_VADDR(0, t), | |
3cc5be77 | 816 | (long)SISUSB_HADDR(0, t), length); |
1bbb4f20 | 817 | |
2682d27c | 818 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 819 | |
a25557f2 | 820 | return true; |
1bbb4f20 TW |
821 | } |
822 | ||
823 | /* Interface routine */ | |
d705ff38 JS |
824 | static bool |
825 | sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b, | |
826 | enum con_scroll dir, unsigned int lines) | |
1bbb4f20 TW |
827 | { |
828 | struct sisusb_usb_data *sisusb; | |
829 | u16 eattr = c->vc_video_erase_char; | |
1bbb4f20 TW |
830 | int copyall = 0; |
831 | unsigned long oldorigin; | |
832 | unsigned int delta = lines * c->vc_size_row; | |
833 | u32 originoffset; | |
834 | ||
835 | /* Returning != 0 means we have done the scrolling successfully. | |
836 | * Returning 0 makes vt do the scrolling on its own. | |
837 | * Note that con_scroll is only called if the console is | |
838 | * visible. In that case, the origin should be our buffer, | |
839 | * not the vt's private one. | |
840 | */ | |
841 | ||
842 | if (!lines) | |
d705ff38 | 843 | return true; |
1bbb4f20 | 844 | |
b87f5671 GKH |
845 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
846 | if (!sisusb) | |
d705ff38 | 847 | return false; |
1bbb4f20 TW |
848 | |
849 | /* sisusb->lock is down */ | |
850 | ||
851 | if (sisusb_is_inactive(c, sisusb)) { | |
2682d27c | 852 | mutex_unlock(&sisusb->lock); |
d705ff38 | 853 | return false; |
1bbb4f20 TW |
854 | } |
855 | ||
856 | /* Special case */ | |
857 | if (t || b != c->vc_rows) | |
858 | return sisusbcon_scroll_area(c, sisusb, t, b, dir, lines); | |
859 | ||
860 | if (c->vc_origin != c->vc_visible_origin) { | |
861 | c->vc_visible_origin = c->vc_origin; | |
862 | sisusbcon_set_start_address(sisusb, c); | |
863 | } | |
864 | ||
865 | /* limit amount to maximum realistic size */ | |
866 | if (lines > c->vc_rows) | |
867 | lines = c->vc_rows; | |
868 | ||
869 | oldorigin = c->vc_origin; | |
870 | ||
871 | switch (dir) { | |
872 | ||
873 | case SM_UP: | |
874 | ||
875 | if (c->vc_scr_end + delta >= | |
876 | sisusb->scrbuf + sisusb->scrbuf_size) { | |
877 | sisusbcon_memcpyw((u16 *)sisusb->scrbuf, | |
878 | (u16 *)(oldorigin + delta), | |
879 | c->vc_screenbuf_size - delta); | |
880 | c->vc_origin = sisusb->scrbuf; | |
881 | sisusb->con_rolled_over = oldorigin - sisusb->scrbuf; | |
882 | copyall = 1; | |
883 | } else | |
884 | c->vc_origin += delta; | |
885 | ||
886 | sisusbcon_memsetw( | |
887 | (u16 *)(c->vc_origin + c->vc_screenbuf_size - delta), | |
888 | eattr, delta); | |
889 | ||
890 | break; | |
891 | ||
892 | case SM_DOWN: | |
893 | ||
894 | if (oldorigin - delta < sisusb->scrbuf) { | |
895 | sisusbcon_memmovew((u16 *)(sisusb->scrbuf + | |
896 | sisusb->scrbuf_size - | |
897 | c->vc_screenbuf_size + | |
898 | delta), | |
899 | (u16 *)oldorigin, | |
900 | c->vc_screenbuf_size - delta); | |
901 | c->vc_origin = sisusb->scrbuf + | |
902 | sisusb->scrbuf_size - | |
903 | c->vc_screenbuf_size; | |
904 | sisusb->con_rolled_over = 0; | |
905 | copyall = 1; | |
906 | } else | |
907 | c->vc_origin -= delta; | |
908 | ||
909 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
910 | ||
911 | scr_memsetw((u16 *)(c->vc_origin), eattr, delta); | |
912 | ||
913 | break; | |
914 | } | |
915 | ||
916 | originoffset = (u32)(c->vc_origin - sisusb->scrbuf); | |
917 | ||
918 | if (copyall) | |
919 | sisusb_copy_memory(sisusb, | |
920 | (char *)c->vc_origin, | |
921 | (u32)(sisusb->vrambase + originoffset), | |
3cc5be77 | 922 | c->vc_screenbuf_size); |
1bbb4f20 TW |
923 | else if (dir == SM_UP) |
924 | sisusb_copy_memory(sisusb, | |
925 | (char *)c->vc_origin + c->vc_screenbuf_size - delta, | |
926 | (u32)sisusb->vrambase + originoffset + | |
927 | c->vc_screenbuf_size - delta, | |
3cc5be77 | 928 | delta); |
1bbb4f20 TW |
929 | else |
930 | sisusb_copy_memory(sisusb, | |
931 | (char *)c->vc_origin, | |
932 | (u32)(sisusb->vrambase + originoffset), | |
3cc5be77 | 933 | delta); |
1bbb4f20 TW |
934 | |
935 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
936 | c->vc_visible_origin = c->vc_origin; | |
937 | ||
938 | sisusbcon_set_start_address(sisusb, c); | |
939 | ||
940 | c->vc_pos = c->vc_pos - oldorigin + c->vc_origin; | |
941 | ||
2682d27c | 942 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 943 | |
d705ff38 | 944 | return true; |
1bbb4f20 TW |
945 | } |
946 | ||
947 | /* Interface routine */ | |
948 | static int | |
949 | sisusbcon_set_origin(struct vc_data *c) | |
950 | { | |
951 | struct sisusb_usb_data *sisusb; | |
952 | ||
953 | /* Returning != 0 means we were successful. | |
954 | * Returning 0 will vt make to use its own | |
955 | * screenbuffer as the origin. | |
956 | */ | |
957 | ||
b87f5671 GKH |
958 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
959 | if (!sisusb) | |
1bbb4f20 TW |
960 | return 0; |
961 | ||
962 | /* sisusb->lock is down */ | |
963 | ||
964 | if (sisusb_is_inactive(c, sisusb) || sisusb->con_blanked) { | |
2682d27c | 965 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
966 | return 0; |
967 | } | |
968 | ||
969 | c->vc_origin = c->vc_visible_origin = sisusb->scrbuf; | |
970 | ||
971 | sisusbcon_set_start_address(sisusb, c); | |
972 | ||
973 | sisusb->con_rolled_over = 0; | |
974 | ||
2682d27c | 975 | mutex_unlock(&sisusb->lock); |
1bbb4f20 | 976 | |
7cdfe4dd | 977 | return true; |
1bbb4f20 TW |
978 | } |
979 | ||
980 | /* Interface routine */ | |
981 | static int | |
e400b6ec AD |
982 | sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows, |
983 | unsigned int user) | |
1bbb4f20 TW |
984 | { |
985 | struct sisusb_usb_data *sisusb; | |
986 | int fh; | |
987 | ||
b87f5671 GKH |
988 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
989 | if (!sisusb) | |
1bbb4f20 TW |
990 | return -ENODEV; |
991 | ||
992 | fh = sisusb->current_font_height; | |
993 | ||
2682d27c | 994 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
995 | |
996 | /* We are quite unflexible as regards resizing. The vt code | |
997 | * handles sizes where the line length isn't equal the pitch | |
998 | * quite badly. As regards the rows, our panning tricks only | |
999 | * work well if the number of rows equals the visible number | |
1000 | * of rows. | |
1001 | */ | |
1002 | ||
1003 | if (newcols != 80 || c->vc_scan_lines / fh != newrows) | |
1004 | return -EINVAL; | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | int | |
1010 | sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot, | |
1011 | u8 *arg, int cmapsz, int ch512, int dorecalc, | |
1012 | struct vc_data *c, int fh, int uplock) | |
1013 | { | |
1014 | int font_select = 0x00, i, err = 0; | |
1015 | u32 offset = 0; | |
1016 | u8 dummy; | |
1017 | ||
1018 | /* sisusb->lock is down */ | |
1019 | ||
1020 | /* | |
1021 | * The default font is kept in slot 0. | |
1022 | * A user font is loaded in slot 2 (256 ch) | |
1023 | * or 2+3 (512 ch). | |
1024 | */ | |
1025 | ||
1026 | if ((slot != 0 && slot != 2) || !fh) { | |
1027 | if (uplock) | |
2682d27c | 1028 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1029 | return -EINVAL; |
1030 | } | |
1031 | ||
1032 | if (set) | |
1033 | sisusb->font_slot = slot; | |
1034 | ||
1035 | /* Default font is always 256 */ | |
1036 | if (slot == 0) | |
1037 | ch512 = 0; | |
1038 | else | |
1039 | offset = 4 * cmapsz; | |
1040 | ||
1041 | font_select = (slot == 0) ? 0x00 : (ch512 ? 0x0e : 0x0a); | |
1042 | ||
1043 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ | |
1044 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x04); /* Write to plane 2 */ | |
1045 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x07); /* Memory mode a0-bf */ | |
1046 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset */ | |
1047 | ||
1048 | if (err) | |
1049 | goto font_op_error; | |
1050 | ||
1051 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x03); /* Select plane read 2 */ | |
1052 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x00); /* Disable odd/even */ | |
1053 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x00); /* Address range a0-bf */ | |
1054 | ||
1055 | if (err) | |
1056 | goto font_op_error; | |
1057 | ||
1058 | if (arg) { | |
1059 | if (set) | |
1060 | for (i = 0; i < cmapsz; i++) { | |
1061 | err |= sisusb_writeb(sisusb, | |
1062 | sisusb->vrambase + offset + i, | |
1063 | arg[i]); | |
1064 | if (err) | |
1065 | break; | |
1066 | } | |
1067 | else | |
1068 | for (i = 0; i < cmapsz; i++) { | |
1069 | err |= sisusb_readb(sisusb, | |
1070 | sisusb->vrambase + offset + i, | |
1071 | &arg[i]); | |
1072 | if (err) | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | * In 512-character mode, the character map is not contiguous if | |
1078 | * we want to remain EGA compatible -- which we do | |
1079 | */ | |
1080 | ||
1081 | if (ch512) { | |
1082 | if (set) | |
1083 | for (i = 0; i < cmapsz; i++) { | |
1084 | err |= sisusb_writeb(sisusb, | |
1085 | sisusb->vrambase + offset + | |
1086 | (2 * cmapsz) + i, | |
1087 | arg[cmapsz + i]); | |
1088 | if (err) | |
1089 | break; | |
1090 | } | |
1091 | else | |
1092 | for (i = 0; i < cmapsz; i++) { | |
1093 | err |= sisusb_readb(sisusb, | |
1094 | sisusb->vrambase + offset + | |
1095 | (2 * cmapsz) + i, | |
1096 | &arg[cmapsz + i]); | |
1097 | if (err) | |
1098 | break; | |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | if (err) | |
1104 | goto font_op_error; | |
1105 | ||
1106 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01); /* Reset */ | |
1107 | err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x03); /* Write to planes 0+1 */ | |
1108 | err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x03); /* Memory mode a0-bf */ | |
1109 | if (set) | |
1110 | sisusb_setidxreg(sisusb, SISSR, 0x03, font_select); | |
1111 | err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03); /* Reset end */ | |
1112 | ||
1113 | if (err) | |
1114 | goto font_op_error; | |
1115 | ||
1116 | err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x00); /* Select plane read 0 */ | |
1117 | err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x10); /* Enable odd/even */ | |
1118 | err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x06); /* Address range b8-bf */ | |
1119 | ||
1120 | if (err) | |
1121 | goto font_op_error; | |
1122 | ||
1123 | if ((set) && (ch512 != sisusb->current_font_512)) { | |
1124 | ||
1125 | /* Font is shared among all our consoles. | |
1126 | * And so is the hi_font_mask. | |
1127 | */ | |
1128 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
993e33b0 BP |
1129 | struct vc_data *d = vc_cons[i].d; |
1130 | if (d && d->vc_sw == &sisusb_con) | |
1131 | d->vc_hi_font_mask = ch512 ? 0x0800 : 0; | |
1bbb4f20 TW |
1132 | } |
1133 | ||
1134 | sisusb->current_font_512 = ch512; | |
1135 | ||
1136 | /* color plane enable register: | |
1137 | 256-char: enable intensity bit | |
1138 | 512-char: disable intensity bit */ | |
1139 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1140 | sisusb_setreg(sisusb, SISAR, 0x12); | |
1141 | sisusb_setreg(sisusb, SISAR, ch512 ? 0x07 : 0x0f); | |
1142 | ||
1143 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1144 | sisusb_setreg(sisusb, SISAR, 0x20); | |
1145 | sisusb_getreg(sisusb, SISINPSTAT, &dummy); | |
1146 | } | |
1147 | ||
1148 | if (dorecalc) { | |
1149 | ||
1150 | /* | |
1151 | * Adjust the screen to fit a font of a certain height | |
1152 | */ | |
1153 | ||
1154 | unsigned char ovr, vde, fsr; | |
1155 | int rows = 0, maxscan = 0; | |
1156 | ||
1157 | if (c) { | |
1158 | ||
1159 | /* Number of video rows */ | |
1160 | rows = c->vc_scan_lines / fh; | |
1161 | /* Scan lines to actually display-1 */ | |
1162 | maxscan = rows * fh - 1; | |
1163 | ||
1164 | /*printk(KERN_DEBUG "sisusb recalc rows %d maxscan %d fh %d sl %d\n", | |
1165 | rows, maxscan, fh, c->vc_scan_lines);*/ | |
1166 | ||
1167 | sisusb_getidxreg(sisusb, SISCR, 0x07, &ovr); | |
1168 | vde = maxscan & 0xff; | |
1169 | ovr = (ovr & 0xbd) | | |
1170 | ((maxscan & 0x100) >> 7) | | |
1171 | ((maxscan & 0x200) >> 3); | |
1172 | sisusb_setidxreg(sisusb, SISCR, 0x07, ovr); | |
1173 | sisusb_setidxreg(sisusb, SISCR, 0x12, vde); | |
1174 | ||
1175 | } | |
1176 | ||
1177 | sisusb_getidxreg(sisusb, SISCR, 0x09, &fsr); | |
1178 | fsr = (fsr & 0xe0) | (fh - 1); | |
1179 | sisusb_setidxreg(sisusb, SISCR, 0x09, fsr); | |
1180 | sisusb->current_font_height = fh; | |
1181 | ||
1182 | sisusb->sisusb_cursor_size_from = -1; | |
1183 | sisusb->sisusb_cursor_size_to = -1; | |
1184 | ||
1185 | } | |
1186 | ||
1187 | if (uplock) | |
2682d27c | 1188 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1189 | |
1190 | if (dorecalc && c) { | |
993e33b0 | 1191 | int rows = c->vc_scan_lines / fh; |
1bbb4f20 TW |
1192 | |
1193 | /* Now adjust our consoles' size */ | |
1194 | ||
1195 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
1196 | struct vc_data *vc = vc_cons[i].d; | |
1197 | ||
1198 | if (vc && vc->vc_sw == &sisusb_con) { | |
6ca8dfd7 | 1199 | if (con_is_visible(vc)) { |
1bbb4f20 TW |
1200 | vc->vc_sw->con_cursor(vc, CM_DRAW); |
1201 | } | |
1202 | vc->vc_font.height = fh; | |
1203 | vc_resize(vc, 0, rows); | |
1204 | } | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | return 0; | |
1209 | ||
1210 | font_op_error: | |
1211 | if (uplock) | |
2682d27c | 1212 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1213 | |
1214 | return -EIO; | |
1215 | } | |
1216 | ||
1217 | /* Interface routine */ | |
1218 | static int | |
1219 | sisusbcon_font_set(struct vc_data *c, struct console_font *font, | |
c396a5bf | 1220 | unsigned int flags) |
1bbb4f20 TW |
1221 | { |
1222 | struct sisusb_usb_data *sisusb; | |
1223 | unsigned charcount = font->charcount; | |
1224 | ||
1225 | if (font->width != 8 || (charcount != 256 && charcount != 512)) | |
1226 | return -EINVAL; | |
1227 | ||
b87f5671 GKH |
1228 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
1229 | if (!sisusb) | |
1bbb4f20 TW |
1230 | return -ENODEV; |
1231 | ||
1232 | /* sisusb->lock is down */ | |
1233 | ||
1234 | /* Save the user-provided font into a buffer. This | |
1235 | * is used for restoring text mode after quitting | |
1236 | * from X and for the con_getfont routine. | |
1237 | */ | |
1238 | if (sisusb->font_backup) { | |
1239 | if (sisusb->font_backup_size < charcount) { | |
1240 | vfree(sisusb->font_backup); | |
1241 | sisusb->font_backup = NULL; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | if (!sisusb->font_backup) | |
42bc47b3 | 1246 | sisusb->font_backup = vmalloc(array_size(charcount, 32)); |
1bbb4f20 TW |
1247 | |
1248 | if (sisusb->font_backup) { | |
1249 | memcpy(sisusb->font_backup, font->data, charcount * 32); | |
1250 | sisusb->font_backup_size = charcount; | |
1251 | sisusb->font_backup_height = font->height; | |
1252 | sisusb->font_backup_512 = (charcount == 512) ? 1 : 0; | |
1253 | } | |
1254 | ||
1255 | /* do_font_op ups sisusb->lock */ | |
1256 | ||
1257 | return sisusbcon_do_font_op(sisusb, 1, 2, font->data, | |
1258 | 8192, (charcount == 512), | |
1259 | (!(flags & KD_FONT_FLAG_DONT_RECALC)) ? 1 : 0, | |
1260 | c, font->height, 1); | |
1261 | } | |
1262 | ||
1263 | /* Interface routine */ | |
1264 | static int | |
1265 | sisusbcon_font_get(struct vc_data *c, struct console_font *font) | |
1266 | { | |
1267 | struct sisusb_usb_data *sisusb; | |
1268 | ||
b87f5671 GKH |
1269 | sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num); |
1270 | if (!sisusb) | |
1bbb4f20 TW |
1271 | return -ENODEV; |
1272 | ||
1273 | /* sisusb->lock is down */ | |
1274 | ||
1275 | font->width = 8; | |
1276 | font->height = c->vc_font.height; | |
1277 | font->charcount = 256; | |
1278 | ||
1279 | if (!font->data) { | |
2682d27c | 1280 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1281 | return 0; |
1282 | } | |
1283 | ||
1284 | if (!sisusb->font_backup) { | |
2682d27c | 1285 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1286 | return -ENODEV; |
1287 | } | |
1288 | ||
1289 | /* Copy 256 chars only, like vgacon */ | |
1290 | memcpy(font->data, sisusb->font_backup, 256 * 32); | |
1291 | ||
2682d27c | 1292 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1293 | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | /* | |
1298 | * The console `switch' structure for the sisusb console | |
1299 | */ | |
1300 | ||
1301 | static const struct consw sisusb_con = { | |
1302 | .owner = THIS_MODULE, | |
1303 | .con_startup = sisusbcon_startup, | |
1304 | .con_init = sisusbcon_init, | |
1305 | .con_deinit = sisusbcon_deinit, | |
1306 | .con_clear = sisusbcon_clear, | |
1307 | .con_putc = sisusbcon_putc, | |
1308 | .con_putcs = sisusbcon_putcs, | |
1309 | .con_cursor = sisusbcon_cursor, | |
1310 | .con_scroll = sisusbcon_scroll, | |
1bbb4f20 TW |
1311 | .con_switch = sisusbcon_switch, |
1312 | .con_blank = sisusbcon_blank, | |
1313 | .con_font_set = sisusbcon_font_set, | |
1314 | .con_font_get = sisusbcon_font_get, | |
1315 | .con_set_palette = sisusbcon_set_palette, | |
1316 | .con_scrolldelta = sisusbcon_scrolldelta, | |
1317 | .con_build_attr = sisusbcon_build_attr, | |
1318 | .con_invert_region = sisusbcon_invert_region, | |
1319 | .con_set_origin = sisusbcon_set_origin, | |
1320 | .con_save_screen = sisusbcon_save_screen, | |
1321 | .con_resize = sisusbcon_resize, | |
1322 | }; | |
1323 | ||
1324 | /* Our very own dummy console driver */ | |
1325 | ||
1326 | static const char *sisusbdummycon_startup(void) | |
1327 | { | |
1328 | return "SISUSBVGADUMMY"; | |
1329 | } | |
1330 | ||
1331 | static void sisusbdummycon_init(struct vc_data *vc, int init) | |
1332 | { | |
1333 | vc->vc_can_do_color = 1; | |
1334 | if (init) { | |
1335 | vc->vc_cols = 80; | |
1336 | vc->vc_rows = 25; | |
1337 | } else | |
1338 | vc_resize(vc, 80, 25); | |
1339 | } | |
1340 | ||
c396a5bf KC |
1341 | static void sisusbdummycon_deinit(struct vc_data *vc) { } |
1342 | static void sisusbdummycon_clear(struct vc_data *vc, int sy, int sx, | |
1343 | int height, int width) { } | |
1344 | static void sisusbdummycon_putc(struct vc_data *vc, int c, int ypos, | |
1345 | int xpos) { } | |
1346 | static void sisusbdummycon_putcs(struct vc_data *vc, const unsigned short *s, | |
1347 | int count, int ypos, int xpos) { } | |
1348 | static void sisusbdummycon_cursor(struct vc_data *vc, int mode) { } | |
1349 | ||
1350 | static bool sisusbdummycon_scroll(struct vc_data *vc, unsigned int top, | |
1351 | unsigned int bottom, enum con_scroll dir, | |
1352 | unsigned int lines) | |
1bbb4f20 | 1353 | { |
c396a5bf | 1354 | return false; |
1bbb4f20 TW |
1355 | } |
1356 | ||
c396a5bf KC |
1357 | static int sisusbdummycon_switch(struct vc_data *vc) |
1358 | { | |
1359 | return 0; | |
1360 | } | |
1361 | ||
1362 | static int sisusbdummycon_blank(struct vc_data *vc, int blank, int mode_switch) | |
1363 | { | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | static int sisusbdummycon_font_set(struct vc_data *vc, | |
1368 | struct console_font *font, | |
1369 | unsigned int flags) | |
1370 | { | |
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | static int sisusbdummycon_font_default(struct vc_data *vc, | |
1375 | struct console_font *font, char *name) | |
1376 | { | |
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | static int sisusbdummycon_font_copy(struct vc_data *vc, int con) | |
1381 | { | |
1382 | return 0; | |
1383 | } | |
1bbb4f20 | 1384 | |
df47e533 | 1385 | static const struct consw sisusb_dummy_con = { |
1bbb4f20 TW |
1386 | .owner = THIS_MODULE, |
1387 | .con_startup = sisusbdummycon_startup, | |
1388 | .con_init = sisusbdummycon_init, | |
c396a5bf KC |
1389 | .con_deinit = sisusbdummycon_deinit, |
1390 | .con_clear = sisusbdummycon_clear, | |
1391 | .con_putc = sisusbdummycon_putc, | |
1392 | .con_putcs = sisusbdummycon_putcs, | |
1393 | .con_cursor = sisusbdummycon_cursor, | |
1394 | .con_scroll = sisusbdummycon_scroll, | |
1395 | .con_switch = sisusbdummycon_switch, | |
1396 | .con_blank = sisusbdummycon_blank, | |
1397 | .con_font_set = sisusbdummycon_font_set, | |
1398 | .con_font_default = sisusbdummycon_font_default, | |
1399 | .con_font_copy = sisusbdummycon_font_copy, | |
1bbb4f20 TW |
1400 | }; |
1401 | ||
1402 | int | |
1403 | sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last) | |
1404 | { | |
7b5cd5fe | 1405 | int i, ret; |
1bbb4f20 | 1406 | |
2682d27c | 1407 | mutex_lock(&sisusb->lock); |
1bbb4f20 TW |
1408 | |
1409 | /* Erm.. that should not happen */ | |
1410 | if (sisusb->haveconsole || !sisusb->SiS_Pr) { | |
2682d27c | 1411 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1412 | return 1; |
1413 | } | |
1414 | ||
1415 | sisusb->con_first = first; | |
1416 | sisusb->con_last = last; | |
1417 | ||
1418 | if (first > last || | |
1419 | first > MAX_NR_CONSOLES || | |
1420 | last > MAX_NR_CONSOLES) { | |
2682d27c | 1421 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1422 | return 1; |
1423 | } | |
1424 | ||
1425 | /* If gfxcore not initialized or no consoles given, quit graciously */ | |
1426 | if (!sisusb->gfxinit || first < 1 || last < 1) { | |
2682d27c | 1427 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1428 | return 0; |
1429 | } | |
1430 | ||
1431 | sisusb->sisusb_cursor_loc = -1; | |
1432 | sisusb->sisusb_cursor_size_from = -1; | |
1433 | sisusb->sisusb_cursor_size_to = -1; | |
1434 | ||
1435 | /* Set up text mode (and upload default font) */ | |
1436 | if (sisusb_reset_text_mode(sisusb, 1)) { | |
2682d27c | 1437 | mutex_unlock(&sisusb->lock); |
7b5cd5fe | 1438 | dev_err(&sisusb->sisusb_dev->dev, "Failed to set up text mode\n"); |
1bbb4f20 TW |
1439 | return 1; |
1440 | } | |
1441 | ||
1442 | /* Initialize some gfx registers */ | |
1443 | sisusb_initialize(sisusb); | |
1444 | ||
1445 | for (i = first - 1; i <= last - 1; i++) { | |
1446 | /* Save sisusb for our interface routines */ | |
1447 | mysisusbs[i] = sisusb; | |
1448 | } | |
1449 | ||
1450 | /* Initial console setup */ | |
1451 | sisusb->sisusb_num_columns = 80; | |
1452 | ||
1453 | /* Use a 32K buffer (matches b8000-bffff area) */ | |
1454 | sisusb->scrbuf_size = 32 * 1024; | |
1455 | ||
1456 | /* Allocate screen buffer */ | |
1457 | if (!(sisusb->scrbuf = (unsigned long)vmalloc(sisusb->scrbuf_size))) { | |
2682d27c | 1458 | mutex_unlock(&sisusb->lock); |
7b5cd5fe | 1459 | dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate screen buffer\n"); |
1bbb4f20 TW |
1460 | return 1; |
1461 | } | |
1462 | ||
2682d27c | 1463 | mutex_unlock(&sisusb->lock); |
1bbb4f20 TW |
1464 | |
1465 | /* Now grab the desired console(s) */ | |
155957f5 WY |
1466 | console_lock(); |
1467 | ret = do_take_over_console(&sisusb_con, first - 1, last - 1, 0); | |
1468 | console_unlock(); | |
1bbb4f20 TW |
1469 | if (!ret) |
1470 | sisusb->haveconsole = 1; | |
1471 | else { | |
1472 | for (i = first - 1; i <= last - 1; i++) | |
1473 | mysisusbs[i] = NULL; | |
1474 | } | |
1475 | ||
1476 | return ret; | |
1477 | } | |
1478 | ||
1479 | void | |
1480 | sisusb_console_exit(struct sisusb_usb_data *sisusb) | |
1481 | { | |
1482 | int i; | |
1483 | ||
1484 | /* This is called if the device is disconnected | |
1485 | * and while disconnect and lock semaphores | |
1486 | * are up. This should be save because we | |
1487 | * can't lose our sisusb any other way but by | |
1488 | * disconnection (and hence, the disconnect | |
1489 | * sema is for protecting all other access | |
1490 | * functions from disconnection, not the | |
1491 | * other way round). | |
1492 | */ | |
1493 | ||
1494 | /* Now what do we do in case of disconnection: | |
1495 | * One alternative would be to simply call | |
1496 | * give_up_console(). Nah, not a good idea. | |
1497 | * give_up_console() is obviously buggy as it | |
1498 | * only discards the consw pointer from the | |
1499 | * driver_map, but doesn't adapt vc->vc_sw | |
1500 | * of the affected consoles. Hence, the next | |
1501 | * call to any of the console functions will | |
1502 | * eventually take a trip to oops county. | |
1503 | * Also, give_up_console for some reason | |
1504 | * doesn't decrement our module refcount. | |
1505 | * Instead, we switch our consoles to a private | |
1506 | * dummy console. This, of course, keeps our | |
1507 | * refcount up as well, but it works perfectly. | |
1508 | */ | |
1509 | ||
1510 | if (sisusb->haveconsole) { | |
1511 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
155957f5 WY |
1512 | if (sisusb->havethisconsole[i]) { |
1513 | console_lock(); | |
1514 | do_take_over_console(&sisusb_dummy_con, i, i, 0); | |
1515 | console_unlock(); | |
1bbb4f20 | 1516 | /* At this point, con_deinit for all our |
155957f5 | 1517 | * consoles is executed by do_take_over_console(). |
1bbb4f20 | 1518 | */ |
155957f5 | 1519 | } |
1bbb4f20 TW |
1520 | sisusb->haveconsole = 0; |
1521 | } | |
1522 | ||
1523 | vfree((void *)sisusb->scrbuf); | |
1524 | sisusb->scrbuf = 0; | |
1525 | ||
1526 | vfree(sisusb->font_backup); | |
1527 | sisusb->font_backup = NULL; | |
1528 | } | |
1529 | ||
1530 | void __init sisusb_init_concode(void) | |
1531 | { | |
1532 | int i; | |
1533 | ||
1534 | for (i = 0; i < MAX_NR_CONSOLES; i++) | |
1535 | mysisusbs[i] = NULL; | |
1536 | } | |
1537 | ||
1538 | #endif /* INCL_CON */ | |
1539 | ||
1540 | ||
1541 |