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51#include <linux/mutex.h>
52#include <linux/module.h>
53#include <linux/kernel.h>
54#include <linux/signal.h>
55#include <linux/fs.h>
56#include <linux/usb.h>
57#include <linux/tty.h>
58#include <linux/console.h>
59#include <linux/string.h>
60#include <linux/kd.h>
61#include <linux/init.h>
62#include <linux/vt_kern.h>
63#include <linux/selection.h>
64#include <linux/spinlock.h>
65#include <linux/kref.h>
66#include <linux/ioport.h>
67#include <linux/interrupt.h>
68#include <linux/vmalloc.h>
69
70#include "sisusb.h"
71#include "sisusb_init.h"
72
73
74static struct sisusb_usb_data *mysisusbs[MAX_NR_CONSOLES];
75
76
77static const struct consw sisusb_con;
78
79static inline void
80sisusbcon_memsetw(u16 *s, u16 c, unsigned int count)
81{
82 memset16(s, c, count / 2);
83}
84
85static inline void
86sisusb_initialize(struct sisusb_usb_data *sisusb)
87{
88
89 if (sisusb_setidxreg(sisusb, SISCR, 0x0c, 0x00))
90 return;
91 if (sisusb_setidxreg(sisusb, SISCR, 0x0d, 0x00))
92 return;
93 if (sisusb_setidxreg(sisusb, SISCR, 0x0e, 0x00))
94 return;
95 sisusb_setidxreg(sisusb, SISCR, 0x0f, 0x00);
96}
97
98static inline void
99sisusbcon_set_start_address(struct sisusb_usb_data *sisusb, struct vc_data *c)
100{
101 sisusb->cur_start_addr = (c->vc_visible_origin - sisusb->scrbuf) / 2;
102
103 sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8));
104 sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff));
105}
106
107void
108sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location)
109{
110 if (sisusb->sisusb_cursor_loc == location)
111 return;
112
113 sisusb->sisusb_cursor_loc = location;
114
115
116
117
118
119
120 if ((location & 0x0007) == 0x0007) {
121 sisusb->bad_cursor_pos = 1;
122 location--;
123 if (sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0x1f, 0x20))
124 return;
125 } else if (sisusb->bad_cursor_pos) {
126 if (sisusb_setidxregand(sisusb, SISCR, 0x0b, 0x1f))
127 return;
128 sisusb->bad_cursor_pos = 0;
129 }
130
131 if (sisusb_setidxreg(sisusb, SISCR, 0x0e, (location >> 8)))
132 return;
133 sisusb_setidxreg(sisusb, SISCR, 0x0f, (location & 0xff));
134}
135
136static inline struct sisusb_usb_data *
137sisusb_get_sisusb(unsigned short console)
138{
139 return mysisusbs[console];
140}
141
142static inline int
143sisusb_sisusb_valid(struct sisusb_usb_data *sisusb)
144{
145 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev)
146 return 0;
147
148 return 1;
149}
150
151static struct sisusb_usb_data *
152sisusb_get_sisusb_lock_and_check(unsigned short console)
153{
154 struct sisusb_usb_data *sisusb;
155
156
157
158
159
160
161 if (in_atomic())
162 return NULL;
163
164 sisusb = sisusb_get_sisusb(console);
165 if (!sisusb)
166 return NULL;
167
168 mutex_lock(&sisusb->lock);
169
170 if (!sisusb_sisusb_valid(sisusb) ||
171 !sisusb->havethisconsole[console]) {
172 mutex_unlock(&sisusb->lock);
173 return NULL;
174 }
175
176 return sisusb;
177}
178
179static int
180sisusb_is_inactive(struct vc_data *c, struct sisusb_usb_data *sisusb)
181{
182 if (sisusb->is_gfx ||
183 sisusb->textmodedestroyed ||
184 c->vc_mode != KD_TEXT)
185 return 1;
186
187 return 0;
188}
189
190
191static const char *
192sisusbcon_startup(void)
193{
194 return "SISUSBCON";
195}
196
197
198static void
199sisusbcon_init(struct vc_data *c, int init)
200{
201 struct sisusb_usb_data *sisusb;
202 int cols, rows;
203
204
205
206
207
208
209
210 sisusb = sisusb_get_sisusb(c->vc_num);
211 if (!sisusb)
212 return;
213
214 mutex_lock(&sisusb->lock);
215
216 if (!sisusb_sisusb_valid(sisusb)) {
217 mutex_unlock(&sisusb->lock);
218 return;
219 }
220
221 c->vc_can_do_color = 1;
222
223 c->vc_complement_mask = 0x7700;
224
225 c->vc_hi_font_mask = sisusb->current_font_512 ? 0x0800 : 0;
226
227 sisusb->haveconsole = 1;
228
229 sisusb->havethisconsole[c->vc_num] = 1;
230
231
232 c->vc_scan_lines = 400;
233
234 c->vc_font.height = sisusb->current_font_height;
235
236
237 cols = 80;
238 rows = c->vc_scan_lines / c->vc_font.height;
239
240
241
242
243
244
245
246
247
248
249 kref_get(&sisusb->kref);
250
251 if (!*c->vc_uni_pagedir_loc)
252 con_set_default_unimap(c);
253
254 mutex_unlock(&sisusb->lock);
255
256 if (init) {
257 c->vc_cols = cols;
258 c->vc_rows = rows;
259 } else
260 vc_resize(c, cols, rows);
261}
262
263
264static void
265sisusbcon_deinit(struct vc_data *c)
266{
267 struct sisusb_usb_data *sisusb;
268 int i;
269
270
271
272
273
274 sisusb = sisusb_get_sisusb(c->vc_num);
275 if (!sisusb)
276 return;
277
278 mutex_lock(&sisusb->lock);
279
280
281 mysisusbs[c->vc_num] = NULL;
282
283 sisusb->havethisconsole[c->vc_num] = 0;
284
285
286 if (sisusb->font_backup) {
287 for(i = 0; i < MAX_NR_CONSOLES; i++) {
288 if (sisusb->havethisconsole[c->vc_num])
289 break;
290 }
291 if (i == MAX_NR_CONSOLES) {
292 vfree(sisusb->font_backup);
293 sisusb->font_backup = NULL;
294 }
295 }
296
297 mutex_unlock(&sisusb->lock);
298
299
300 kref_put(&sisusb->kref, sisusb_delete);
301}
302
303
304static u8
305sisusbcon_build_attr(struct vc_data *c, u8 color, enum vc_intensity intensity,
306 bool blink, bool underline, bool reverse,
307 bool unused)
308{
309 u8 attr = color;
310
311 if (underline)
312 attr = (attr & 0xf0) | c->vc_ulcolor;
313 else if (intensity == VCI_HALF_BRIGHT)
314 attr = (attr & 0xf0) | c->vc_halfcolor;
315
316 if (reverse)
317 attr = ((attr) & 0x88) |
318 ((((attr) >> 4) |
319 ((attr) << 4)) & 0x77);
320
321 if (blink)
322 attr ^= 0x80;
323
324 if (intensity == VCI_BOLD)
325 attr ^= 0x08;
326
327 return attr;
328}
329
330
331static void
332sisusbcon_invert_region(struct vc_data *vc, u16 *p, int count)
333{
334
335
336
337
338
339
340 while (count--) {
341 u16 a = *p;
342
343 *p++ = ((a) & 0x88ff) |
344 (((a) & 0x7000) >> 4) |
345 (((a) & 0x0700) << 4);
346 }
347}
348
349static inline void *sisusb_vaddr(const struct sisusb_usb_data *sisusb,
350 const struct vc_data *c, unsigned int x, unsigned int y)
351{
352 return (u16 *)c->vc_origin + y * sisusb->sisusb_num_columns + x;
353}
354
355static inline unsigned long sisusb_haddr(const struct sisusb_usb_data *sisusb,
356 const struct vc_data *c, unsigned int x, unsigned int y)
357{
358 unsigned long offset = c->vc_origin - sisusb->scrbuf;
359
360
361 offset += 2 * (y * sisusb->sisusb_num_columns + x);
362
363 return sisusb->vrambase + offset;
364}
365
366
367static void
368sisusbcon_putc(struct vc_data *c, int ch, int y, int x)
369{
370 struct sisusb_usb_data *sisusb;
371
372 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
373 if (!sisusb)
374 return;
375
376
377 if (sisusb_is_inactive(c, sisusb)) {
378 mutex_unlock(&sisusb->lock);
379 return;
380 }
381
382 sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, x, y),
383 sisusb_haddr(sisusb, c, x, y), 2);
384
385 mutex_unlock(&sisusb->lock);
386}
387
388
389static void
390sisusbcon_putcs(struct vc_data *c, const unsigned short *s,
391 int count, int y, int x)
392{
393 struct sisusb_usb_data *sisusb;
394
395 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
396 if (!sisusb)
397 return;
398
399
400
401
402
403
404
405 memcpy(sisusb_vaddr(sisusb, c, x, y), s, count * 2);
406
407 if (sisusb_is_inactive(c, sisusb)) {
408 mutex_unlock(&sisusb->lock);
409 return;
410 }
411
412 sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, x, y),
413 sisusb_haddr(sisusb, c, x, y), count * 2);
414
415 mutex_unlock(&sisusb->lock);
416}
417
418
419static void
420sisusbcon_clear(struct vc_data *c, int y, int x, int height, int width)
421{
422 struct sisusb_usb_data *sisusb;
423 u16 eattr = c->vc_video_erase_char;
424 int i, length, cols;
425 u16 *dest;
426
427 if (width <= 0 || height <= 0)
428 return;
429
430 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
431 if (!sisusb)
432 return;
433
434
435
436
437
438
439
440 dest = sisusb_vaddr(sisusb, c, x, y);
441
442 cols = sisusb->sisusb_num_columns;
443
444 if (width > cols)
445 width = cols;
446
447 if (x == 0 && width >= c->vc_cols) {
448
449 sisusbcon_memsetw(dest, eattr, height * cols * 2);
450
451 } else {
452
453 for (i = height; i > 0; i--, dest += cols)
454 sisusbcon_memsetw(dest, eattr, width * 2);
455
456 }
457
458 if (sisusb_is_inactive(c, sisusb)) {
459 mutex_unlock(&sisusb->lock);
460 return;
461 }
462
463 length = ((height * cols) - x - (cols - width - x)) * 2;
464
465
466 sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, x, y),
467 sisusb_haddr(sisusb, c, x, y), length);
468
469 mutex_unlock(&sisusb->lock);
470}
471
472
473static int
474sisusbcon_switch(struct vc_data *c)
475{
476 struct sisusb_usb_data *sisusb;
477 int length;
478
479
480
481
482
483
484 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
485 if (!sisusb)
486 return 0;
487
488
489
490
491 if (sisusb_is_inactive(c, sisusb)) {
492 mutex_unlock(&sisusb->lock);
493 return 0;
494 }
495
496
497
498
499
500 if (c->vc_origin == (unsigned long)c->vc_screenbuf) {
501 mutex_unlock(&sisusb->lock);
502 dev_dbg(&sisusb->sisusb_dev->dev, "ASSERT ORIGIN != SCREENBUF!\n");
503 return 0;
504 }
505
506
507 length = min((int)c->vc_screenbuf_size,
508 (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin));
509
510
511 memcpy((u16 *)c->vc_origin, (u16 *)c->vc_screenbuf, length);
512
513 sisusb_copy_memory(sisusb, (u8 *)c->vc_origin,
514 sisusb_haddr(sisusb, c, 0, 0), length);
515
516 mutex_unlock(&sisusb->lock);
517
518 return 0;
519}
520
521
522static void
523sisusbcon_save_screen(struct vc_data *c)
524{
525 struct sisusb_usb_data *sisusb;
526 int length;
527
528
529
530
531
532 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
533 if (!sisusb)
534 return;
535
536
537
538 if (sisusb_is_inactive(c, sisusb)) {
539 mutex_unlock(&sisusb->lock);
540 return;
541 }
542
543
544 length = min((int)c->vc_screenbuf_size,
545 (int)(sisusb->scrbuf + sisusb->scrbuf_size - c->vc_origin));
546
547
548 memcpy((u16 *)c->vc_screenbuf, (u16 *)c->vc_origin, length);
549
550 mutex_unlock(&sisusb->lock);
551}
552
553
554static void
555sisusbcon_set_palette(struct vc_data *c, const unsigned char *table)
556{
557 struct sisusb_usb_data *sisusb;
558 int i, j;
559
560
561
562 if (!con_is_visible(c))
563 return;
564
565 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
566 if (!sisusb)
567 return;
568
569
570
571 if (sisusb_is_inactive(c, sisusb)) {
572 mutex_unlock(&sisusb->lock);
573 return;
574 }
575
576 for (i = j = 0; i < 16; i++) {
577 if (sisusb_setreg(sisusb, SISCOLIDX, table[i]))
578 break;
579 if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2))
580 break;
581 if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2))
582 break;
583 if (sisusb_setreg(sisusb, SISCOLDATA, c->vc_palette[j++] >> 2))
584 break;
585 }
586
587 mutex_unlock(&sisusb->lock);
588}
589
590
591static int
592sisusbcon_blank(struct vc_data *c, int blank, int mode_switch)
593{
594 struct sisusb_usb_data *sisusb;
595 u8 sr1, cr17, pmreg, cr63;
596 int ret = 0;
597
598 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
599 if (!sisusb)
600 return 0;
601
602
603
604 if (mode_switch)
605 sisusb->is_gfx = blank ? 1 : 0;
606
607 if (sisusb_is_inactive(c, sisusb)) {
608 mutex_unlock(&sisusb->lock);
609 return 0;
610 }
611
612 switch (blank) {
613
614 case 1:
615 case -1:
616 sisusbcon_memsetw((u16 *)c->vc_origin,
617 c->vc_video_erase_char,
618 c->vc_screenbuf_size);
619 sisusb_copy_memory(sisusb, (u8 *)c->vc_origin,
620 sisusb_haddr(sisusb, c, 0, 0),
621 c->vc_screenbuf_size);
622 sisusb->con_blanked = 1;
623 ret = 1;
624 break;
625
626 default:
627 switch (blank) {
628 case 0:
629 sr1 = 0x00;
630 cr17 = 0x80;
631 pmreg = 0x00;
632 cr63 = 0x00;
633 ret = 1;
634 sisusb->con_blanked = 0;
635 break;
636 case VESA_VSYNC_SUSPEND + 1:
637 sr1 = 0x20;
638 cr17 = 0x80;
639 pmreg = 0x80;
640 cr63 = 0x40;
641 break;
642 case VESA_HSYNC_SUSPEND + 1:
643 sr1 = 0x20;
644 cr17 = 0x80;
645 pmreg = 0x40;
646 cr63 = 0x40;
647 break;
648 case VESA_POWERDOWN + 1:
649 sr1 = 0x20;
650 cr17 = 0x00;
651 pmreg = 0xc0;
652 cr63 = 0x40;
653 break;
654 default:
655 mutex_unlock(&sisusb->lock);
656 return -EINVAL;
657 }
658
659 sisusb_setidxregandor(sisusb, SISSR, 0x01, ~0x20, sr1);
660 sisusb_setidxregandor(sisusb, SISCR, 0x17, 0x7f, cr17);
661 sisusb_setidxregandor(sisusb, SISSR, 0x1f, 0x3f, pmreg);
662 sisusb_setidxregandor(sisusb, SISCR, 0x63, 0xbf, cr63);
663
664 }
665
666 mutex_unlock(&sisusb->lock);
667
668 return ret;
669}
670
671
672static void
673sisusbcon_scrolldelta(struct vc_data *c, int lines)
674{
675 struct sisusb_usb_data *sisusb;
676
677 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
678 if (!sisusb)
679 return;
680
681
682
683 if (sisusb_is_inactive(c, sisusb)) {
684 mutex_unlock(&sisusb->lock);
685 return;
686 }
687
688 vc_scrolldelta_helper(c, lines, sisusb->con_rolled_over,
689 (void *)sisusb->scrbuf, sisusb->scrbuf_size);
690
691 sisusbcon_set_start_address(sisusb, c);
692
693 mutex_unlock(&sisusb->lock);
694}
695
696
697static void
698sisusbcon_cursor(struct vc_data *c, int mode)
699{
700 struct sisusb_usb_data *sisusb;
701 int from, to, baseline;
702
703 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
704 if (!sisusb)
705 return;
706
707
708
709 if (sisusb_is_inactive(c, sisusb)) {
710 mutex_unlock(&sisusb->lock);
711 return;
712 }
713
714 if (c->vc_origin != c->vc_visible_origin) {
715 c->vc_visible_origin = c->vc_origin;
716 sisusbcon_set_start_address(sisusb, c);
717 }
718
719 if (mode == CM_ERASE) {
720 sisusb_setidxregor(sisusb, SISCR, 0x0a, 0x20);
721 sisusb->sisusb_cursor_size_to = -1;
722 mutex_unlock(&sisusb->lock);
723 return;
724 }
725
726 sisusb_set_cursor(sisusb, (c->vc_pos - sisusb->scrbuf) / 2);
727
728 baseline = c->vc_font.height - (c->vc_font.height < 10 ? 1 : 2);
729
730 switch (CUR_SIZE(c->vc_cursor_type)) {
731 case CUR_BLOCK: from = 1;
732 to = c->vc_font.height;
733 break;
734 case CUR_TWO_THIRDS: from = c->vc_font.height / 3;
735 to = baseline;
736 break;
737 case CUR_LOWER_HALF: from = c->vc_font.height / 2;
738 to = baseline;
739 break;
740 case CUR_LOWER_THIRD: from = (c->vc_font.height * 2) / 3;
741 to = baseline;
742 break;
743 case CUR_NONE: from = 31;
744 to = 30;
745 break;
746 default:
747 case CUR_UNDERLINE: from = baseline - 1;
748 to = baseline;
749 break;
750 }
751
752 if (sisusb->sisusb_cursor_size_from != from ||
753 sisusb->sisusb_cursor_size_to != to) {
754
755 sisusb_setidxreg(sisusb, SISCR, 0x0a, from);
756 sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0, to);
757
758 sisusb->sisusb_cursor_size_from = from;
759 sisusb->sisusb_cursor_size_to = to;
760 }
761
762 mutex_unlock(&sisusb->lock);
763}
764
765static bool
766sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb,
767 unsigned int t, unsigned int b, enum con_scroll dir,
768 unsigned int lines)
769{
770 int cols = sisusb->sisusb_num_columns;
771 int length = ((b - t) * cols) * 2;
772 u16 eattr = c->vc_video_erase_char;
773
774
775
776
777
778
779
780
781
782 switch (dir) {
783
784 case SM_UP:
785 memmove(sisusb_vaddr(sisusb, c, 0, t),
786 sisusb_vaddr(sisusb, c, 0, t + lines),
787 (b - t - lines) * cols * 2);
788 sisusbcon_memsetw(sisusb_vaddr(sisusb, c, 0, b - lines),
789 eattr, lines * cols * 2);
790 break;
791
792 case SM_DOWN:
793 memmove(sisusb_vaddr(sisusb, c, 0, t + lines),
794 sisusb_vaddr(sisusb, c, 0, t),
795 (b - t - lines) * cols * 2);
796 sisusbcon_memsetw(sisusb_vaddr(sisusb, c, 0, t), eattr,
797 lines * cols * 2);
798 break;
799 }
800
801 sisusb_copy_memory(sisusb, sisusb_vaddr(sisusb, c, 0, t),
802 sisusb_haddr(sisusb, c, 0, t), length);
803
804 mutex_unlock(&sisusb->lock);
805
806 return true;
807}
808
809
810static bool
811sisusbcon_scroll(struct vc_data *c, unsigned int t, unsigned int b,
812 enum con_scroll dir, unsigned int lines)
813{
814 struct sisusb_usb_data *sisusb;
815 u16 eattr = c->vc_video_erase_char;
816 int copyall = 0;
817 unsigned long oldorigin;
818 unsigned int delta = lines * c->vc_size_row;
819
820
821
822
823
824
825
826
827 if (!lines)
828 return true;
829
830 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
831 if (!sisusb)
832 return false;
833
834
835
836 if (sisusb_is_inactive(c, sisusb)) {
837 mutex_unlock(&sisusb->lock);
838 return false;
839 }
840
841
842 if (t || b != c->vc_rows)
843 return sisusbcon_scroll_area(c, sisusb, t, b, dir, lines);
844
845 if (c->vc_origin != c->vc_visible_origin) {
846 c->vc_visible_origin = c->vc_origin;
847 sisusbcon_set_start_address(sisusb, c);
848 }
849
850
851 if (lines > c->vc_rows)
852 lines = c->vc_rows;
853
854 oldorigin = c->vc_origin;
855
856 switch (dir) {
857
858 case SM_UP:
859
860 if (c->vc_scr_end + delta >=
861 sisusb->scrbuf + sisusb->scrbuf_size) {
862 memcpy((u16 *)sisusb->scrbuf,
863 (u16 *)(oldorigin + delta),
864 c->vc_screenbuf_size - delta);
865 c->vc_origin = sisusb->scrbuf;
866 sisusb->con_rolled_over = oldorigin - sisusb->scrbuf;
867 copyall = 1;
868 } else
869 c->vc_origin += delta;
870
871 sisusbcon_memsetw(
872 (u16 *)(c->vc_origin + c->vc_screenbuf_size - delta),
873 eattr, delta);
874
875 break;
876
877 case SM_DOWN:
878
879 if (oldorigin - delta < sisusb->scrbuf) {
880 memmove((void *)sisusb->scrbuf + sisusb->scrbuf_size -
881 c->vc_screenbuf_size + delta,
882 (u16 *)oldorigin,
883 c->vc_screenbuf_size - delta);
884 c->vc_origin = sisusb->scrbuf +
885 sisusb->scrbuf_size -
886 c->vc_screenbuf_size;
887 sisusb->con_rolled_over = 0;
888 copyall = 1;
889 } else
890 c->vc_origin -= delta;
891
892 c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size;
893
894 scr_memsetw((u16 *)(c->vc_origin), eattr, delta);
895
896 break;
897 }
898
899 if (copyall)
900 sisusb_copy_memory(sisusb,
901 (u8 *)c->vc_origin,
902 sisusb_haddr(sisusb, c, 0, 0),
903 c->vc_screenbuf_size);
904 else if (dir == SM_UP)
905 sisusb_copy_memory(sisusb,
906 (u8 *)c->vc_origin + c->vc_screenbuf_size - delta,
907 sisusb_haddr(sisusb, c, 0, 0) +
908 c->vc_screenbuf_size - delta,
909 delta);
910 else
911 sisusb_copy_memory(sisusb,
912 (u8 *)c->vc_origin,
913 sisusb_haddr(sisusb, c, 0, 0),
914 delta);
915
916 c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size;
917 c->vc_visible_origin = c->vc_origin;
918
919 sisusbcon_set_start_address(sisusb, c);
920
921 c->vc_pos = c->vc_pos - oldorigin + c->vc_origin;
922
923 mutex_unlock(&sisusb->lock);
924
925 return true;
926}
927
928
929static int
930sisusbcon_set_origin(struct vc_data *c)
931{
932 struct sisusb_usb_data *sisusb;
933
934
935
936
937
938
939 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
940 if (!sisusb)
941 return 0;
942
943
944
945 if (sisusb_is_inactive(c, sisusb) || sisusb->con_blanked) {
946 mutex_unlock(&sisusb->lock);
947 return 0;
948 }
949
950 c->vc_origin = c->vc_visible_origin = sisusb->scrbuf;
951
952 sisusbcon_set_start_address(sisusb, c);
953
954 sisusb->con_rolled_over = 0;
955
956 mutex_unlock(&sisusb->lock);
957
958 return true;
959}
960
961
962static int
963sisusbcon_resize(struct vc_data *c, unsigned int newcols, unsigned int newrows,
964 unsigned int user)
965{
966 struct sisusb_usb_data *sisusb;
967 int fh;
968
969 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
970 if (!sisusb)
971 return -ENODEV;
972
973 fh = sisusb->current_font_height;
974
975 mutex_unlock(&sisusb->lock);
976
977
978
979
980
981
982
983
984 if (newcols != 80 || c->vc_scan_lines / fh != newrows)
985 return -EINVAL;
986
987 return 0;
988}
989
990int
991sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
992 u8 *arg, int cmapsz, int ch512, int dorecalc,
993 struct vc_data *c, int fh, int uplock)
994{
995 int font_select = 0x00, i, err = 0;
996 u32 offset = 0;
997 u8 dummy;
998
999
1000
1001
1002
1003
1004
1005
1006
1007 if ((slot != 0 && slot != 2) || !fh) {
1008 if (uplock)
1009 mutex_unlock(&sisusb->lock);
1010 return -EINVAL;
1011 }
1012
1013 if (set)
1014 sisusb->font_slot = slot;
1015
1016
1017 if (slot == 0)
1018 ch512 = 0;
1019 else
1020 offset = 4 * cmapsz;
1021
1022 font_select = (slot == 0) ? 0x00 : (ch512 ? 0x0e : 0x0a);
1023
1024 err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01);
1025 err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x04);
1026 err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x07);
1027 err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03);
1028
1029 if (err)
1030 goto font_op_error;
1031
1032 err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x03);
1033 err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x00);
1034 err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x00);
1035
1036 if (err)
1037 goto font_op_error;
1038
1039 if (arg) {
1040 if (set)
1041 for (i = 0; i < cmapsz; i++) {
1042 err |= sisusb_writeb(sisusb,
1043 sisusb->vrambase + offset + i,
1044 arg[i]);
1045 if (err)
1046 break;
1047 }
1048 else
1049 for (i = 0; i < cmapsz; i++) {
1050 err |= sisusb_readb(sisusb,
1051 sisusb->vrambase + offset + i,
1052 &arg[i]);
1053 if (err)
1054 break;
1055 }
1056
1057
1058
1059
1060
1061
1062 if (ch512) {
1063 if (set)
1064 for (i = 0; i < cmapsz; i++) {
1065 err |= sisusb_writeb(sisusb,
1066 sisusb->vrambase + offset +
1067 (2 * cmapsz) + i,
1068 arg[cmapsz + i]);
1069 if (err)
1070 break;
1071 }
1072 else
1073 for (i = 0; i < cmapsz; i++) {
1074 err |= sisusb_readb(sisusb,
1075 sisusb->vrambase + offset +
1076 (2 * cmapsz) + i,
1077 &arg[cmapsz + i]);
1078 if (err)
1079 break;
1080 }
1081 }
1082 }
1083
1084 if (err)
1085 goto font_op_error;
1086
1087 err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x01);
1088 err |= sisusb_setidxreg(sisusb, SISSR, 0x02, 0x03);
1089 err |= sisusb_setidxreg(sisusb, SISSR, 0x04, 0x03);
1090 if (set)
1091 sisusb_setidxreg(sisusb, SISSR, 0x03, font_select);
1092 err |= sisusb_setidxreg(sisusb, SISSR, 0x00, 0x03);
1093
1094 if (err)
1095 goto font_op_error;
1096
1097 err |= sisusb_setidxreg(sisusb, SISGR, 0x04, 0x00);
1098 err |= sisusb_setidxreg(sisusb, SISGR, 0x05, 0x10);
1099 err |= sisusb_setidxreg(sisusb, SISGR, 0x06, 0x06);
1100
1101 if (err)
1102 goto font_op_error;
1103
1104 if ((set) && (ch512 != sisusb->current_font_512)) {
1105
1106
1107
1108
1109 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1110 struct vc_data *d = vc_cons[i].d;
1111 if (d && d->vc_sw == &sisusb_con)
1112 d->vc_hi_font_mask = ch512 ? 0x0800 : 0;
1113 }
1114
1115 sisusb->current_font_512 = ch512;
1116
1117
1118
1119
1120 sisusb_getreg(sisusb, SISINPSTAT, &dummy);
1121 sisusb_setreg(sisusb, SISAR, 0x12);
1122 sisusb_setreg(sisusb, SISAR, ch512 ? 0x07 : 0x0f);
1123
1124 sisusb_getreg(sisusb, SISINPSTAT, &dummy);
1125 sisusb_setreg(sisusb, SISAR, 0x20);
1126 sisusb_getreg(sisusb, SISINPSTAT, &dummy);
1127 }
1128
1129 if (dorecalc) {
1130
1131
1132
1133
1134
1135 unsigned char ovr, vde, fsr;
1136 int rows = 0, maxscan = 0;
1137
1138 if (c) {
1139
1140
1141 rows = c->vc_scan_lines / fh;
1142
1143 maxscan = rows * fh - 1;
1144
1145
1146
1147
1148 sisusb_getidxreg(sisusb, SISCR, 0x07, &ovr);
1149 vde = maxscan & 0xff;
1150 ovr = (ovr & 0xbd) |
1151 ((maxscan & 0x100) >> 7) |
1152 ((maxscan & 0x200) >> 3);
1153 sisusb_setidxreg(sisusb, SISCR, 0x07, ovr);
1154 sisusb_setidxreg(sisusb, SISCR, 0x12, vde);
1155
1156 }
1157
1158 sisusb_getidxreg(sisusb, SISCR, 0x09, &fsr);
1159 fsr = (fsr & 0xe0) | (fh - 1);
1160 sisusb_setidxreg(sisusb, SISCR, 0x09, fsr);
1161 sisusb->current_font_height = fh;
1162
1163 sisusb->sisusb_cursor_size_from = -1;
1164 sisusb->sisusb_cursor_size_to = -1;
1165
1166 }
1167
1168 if (uplock)
1169 mutex_unlock(&sisusb->lock);
1170
1171 if (dorecalc && c) {
1172 int rows = c->vc_scan_lines / fh;
1173
1174
1175
1176 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1177 struct vc_data *vc = vc_cons[i].d;
1178
1179 if (vc && vc->vc_sw == &sisusb_con) {
1180 if (con_is_visible(vc)) {
1181 vc->vc_sw->con_cursor(vc, CM_DRAW);
1182 }
1183 vc->vc_font.height = fh;
1184 vc_resize(vc, 0, rows);
1185 }
1186 }
1187 }
1188
1189 return 0;
1190
1191font_op_error:
1192 if (uplock)
1193 mutex_unlock(&sisusb->lock);
1194
1195 return -EIO;
1196}
1197
1198
1199static int
1200sisusbcon_font_set(struct vc_data *c, struct console_font *font,
1201 unsigned int flags)
1202{
1203 struct sisusb_usb_data *sisusb;
1204 unsigned charcount = font->charcount;
1205
1206 if (font->width != 8 || (charcount != 256 && charcount != 512))
1207 return -EINVAL;
1208
1209 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
1210 if (!sisusb)
1211 return -ENODEV;
1212
1213
1214
1215
1216
1217
1218
1219 if (sisusb->font_backup) {
1220 if (sisusb->font_backup_size < charcount) {
1221 vfree(sisusb->font_backup);
1222 sisusb->font_backup = NULL;
1223 }
1224 }
1225
1226 if (!sisusb->font_backup)
1227 sisusb->font_backup = vmalloc(array_size(charcount, 32));
1228
1229 if (sisusb->font_backup) {
1230 memcpy(sisusb->font_backup, font->data, array_size(charcount, 32));
1231 sisusb->font_backup_size = charcount;
1232 sisusb->font_backup_height = font->height;
1233 sisusb->font_backup_512 = (charcount == 512) ? 1 : 0;
1234 }
1235
1236
1237
1238 return sisusbcon_do_font_op(sisusb, 1, 2, font->data,
1239 8192, (charcount == 512),
1240 (!(flags & KD_FONT_FLAG_DONT_RECALC)) ? 1 : 0,
1241 c, font->height, 1);
1242}
1243
1244
1245static int
1246sisusbcon_font_get(struct vc_data *c, struct console_font *font)
1247{
1248 struct sisusb_usb_data *sisusb;
1249
1250 sisusb = sisusb_get_sisusb_lock_and_check(c->vc_num);
1251 if (!sisusb)
1252 return -ENODEV;
1253
1254
1255
1256 font->width = 8;
1257 font->height = c->vc_font.height;
1258 font->charcount = 256;
1259
1260 if (!font->data) {
1261 mutex_unlock(&sisusb->lock);
1262 return 0;
1263 }
1264
1265 if (!sisusb->font_backup) {
1266 mutex_unlock(&sisusb->lock);
1267 return -ENODEV;
1268 }
1269
1270
1271 memcpy(font->data, sisusb->font_backup, 256 * 32);
1272
1273 mutex_unlock(&sisusb->lock);
1274
1275 return 0;
1276}
1277
1278
1279
1280
1281
1282static const struct consw sisusb_con = {
1283 .owner = THIS_MODULE,
1284 .con_startup = sisusbcon_startup,
1285 .con_init = sisusbcon_init,
1286 .con_deinit = sisusbcon_deinit,
1287 .con_clear = sisusbcon_clear,
1288 .con_putc = sisusbcon_putc,
1289 .con_putcs = sisusbcon_putcs,
1290 .con_cursor = sisusbcon_cursor,
1291 .con_scroll = sisusbcon_scroll,
1292 .con_switch = sisusbcon_switch,
1293 .con_blank = sisusbcon_blank,
1294 .con_font_set = sisusbcon_font_set,
1295 .con_font_get = sisusbcon_font_get,
1296 .con_set_palette = sisusbcon_set_palette,
1297 .con_scrolldelta = sisusbcon_scrolldelta,
1298 .con_build_attr = sisusbcon_build_attr,
1299 .con_invert_region = sisusbcon_invert_region,
1300 .con_set_origin = sisusbcon_set_origin,
1301 .con_save_screen = sisusbcon_save_screen,
1302 .con_resize = sisusbcon_resize,
1303};
1304
1305
1306
1307static const char *sisusbdummycon_startup(void)
1308{
1309 return "SISUSBVGADUMMY";
1310}
1311
1312static void sisusbdummycon_init(struct vc_data *vc, int init)
1313{
1314 vc->vc_can_do_color = 1;
1315 if (init) {
1316 vc->vc_cols = 80;
1317 vc->vc_rows = 25;
1318 } else
1319 vc_resize(vc, 80, 25);
1320}
1321
1322static void sisusbdummycon_deinit(struct vc_data *vc) { }
1323static void sisusbdummycon_clear(struct vc_data *vc, int sy, int sx,
1324 int height, int width) { }
1325static void sisusbdummycon_putc(struct vc_data *vc, int c, int ypos,
1326 int xpos) { }
1327static void sisusbdummycon_putcs(struct vc_data *vc, const unsigned short *s,
1328 int count, int ypos, int xpos) { }
1329static void sisusbdummycon_cursor(struct vc_data *vc, int mode) { }
1330
1331static bool sisusbdummycon_scroll(struct vc_data *vc, unsigned int top,
1332 unsigned int bottom, enum con_scroll dir,
1333 unsigned int lines)
1334{
1335 return false;
1336}
1337
1338static int sisusbdummycon_switch(struct vc_data *vc)
1339{
1340 return 0;
1341}
1342
1343static int sisusbdummycon_blank(struct vc_data *vc, int blank, int mode_switch)
1344{
1345 return 0;
1346}
1347
1348static const struct consw sisusb_dummy_con = {
1349 .owner = THIS_MODULE,
1350 .con_startup = sisusbdummycon_startup,
1351 .con_init = sisusbdummycon_init,
1352 .con_deinit = sisusbdummycon_deinit,
1353 .con_clear = sisusbdummycon_clear,
1354 .con_putc = sisusbdummycon_putc,
1355 .con_putcs = sisusbdummycon_putcs,
1356 .con_cursor = sisusbdummycon_cursor,
1357 .con_scroll = sisusbdummycon_scroll,
1358 .con_switch = sisusbdummycon_switch,
1359 .con_blank = sisusbdummycon_blank,
1360};
1361
1362int
1363sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last)
1364{
1365 int i, ret;
1366
1367 mutex_lock(&sisusb->lock);
1368
1369
1370 if (sisusb->haveconsole || !sisusb->SiS_Pr) {
1371 mutex_unlock(&sisusb->lock);
1372 return 1;
1373 }
1374
1375 sisusb->con_first = first;
1376 sisusb->con_last = last;
1377
1378 if (first > last ||
1379 first > MAX_NR_CONSOLES ||
1380 last > MAX_NR_CONSOLES) {
1381 mutex_unlock(&sisusb->lock);
1382 return 1;
1383 }
1384
1385
1386 if (!sisusb->gfxinit || first < 1 || last < 1) {
1387 mutex_unlock(&sisusb->lock);
1388 return 0;
1389 }
1390
1391 sisusb->sisusb_cursor_loc = -1;
1392 sisusb->sisusb_cursor_size_from = -1;
1393 sisusb->sisusb_cursor_size_to = -1;
1394
1395
1396 if (sisusb_reset_text_mode(sisusb, 1)) {
1397 mutex_unlock(&sisusb->lock);
1398 dev_err(&sisusb->sisusb_dev->dev, "Failed to set up text mode\n");
1399 return 1;
1400 }
1401
1402
1403 sisusb_initialize(sisusb);
1404
1405 for (i = first - 1; i <= last - 1; i++) {
1406
1407 mysisusbs[i] = sisusb;
1408 }
1409
1410
1411 sisusb->sisusb_num_columns = 80;
1412
1413
1414 sisusb->scrbuf_size = 32 * 1024;
1415
1416
1417 if (!(sisusb->scrbuf = (unsigned long)vmalloc(sisusb->scrbuf_size))) {
1418 mutex_unlock(&sisusb->lock);
1419 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate screen buffer\n");
1420 return 1;
1421 }
1422
1423 mutex_unlock(&sisusb->lock);
1424
1425
1426 console_lock();
1427 ret = do_take_over_console(&sisusb_con, first - 1, last - 1, 0);
1428 console_unlock();
1429 if (!ret)
1430 sisusb->haveconsole = 1;
1431 else {
1432 for (i = first - 1; i <= last - 1; i++)
1433 mysisusbs[i] = NULL;
1434 }
1435
1436 return ret;
1437}
1438
1439void
1440sisusb_console_exit(struct sisusb_usb_data *sisusb)
1441{
1442 int i;
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470 if (sisusb->haveconsole) {
1471 for (i = 0; i < MAX_NR_CONSOLES; i++)
1472 if (sisusb->havethisconsole[i]) {
1473 console_lock();
1474 do_take_over_console(&sisusb_dummy_con, i, i, 0);
1475 console_unlock();
1476
1477
1478
1479 }
1480 sisusb->haveconsole = 0;
1481 }
1482
1483 vfree((void *)sisusb->scrbuf);
1484 sisusb->scrbuf = 0;
1485
1486 vfree(sisusb->font_backup);
1487 sisusb->font_backup = NULL;
1488}
1489
1490void __init sisusb_init_concode(void)
1491{
1492 int i;
1493
1494 for (i = 0; i < MAX_NR_CONSOLES; i++)
1495 mysisusbs[i] = NULL;
1496}
1497