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10#include <linux/module.h>
11#include <linux/types.h>
12#include <linux/kdev_t.h>
13#include <linux/tty.h>
14#include <linux/vt_kern.h>
15#include <linux/init.h>
16#include <linux/console.h>
17#include <linux/interrupt.h>
18#include <linux/workqueue.h>
19
20#include <linux/slab.h>
21#include <linux/bootmem.h>
22#include <linux/compat.h>
23
24#include <asm/ccwdev.h>
25#include <asm/cio.h>
26#include <asm/ebcdic.h>
27#include <asm/uaccess.h>
28
29#include "raw3270.h"
30#include "tty3270.h"
31#include "keyboard.h"
32
33#define TTY3270_CHAR_BUF_SIZE 256
34#define TTY3270_OUTPUT_BUFFER_SIZE 1024
35#define TTY3270_STRING_PAGES 5
36
37struct tty_driver *tty3270_driver;
38static int tty3270_max_index;
39
40static struct raw3270_fn tty3270_fn;
41
42struct tty3270_cell {
43 unsigned char character;
44 unsigned char highlight;
45 unsigned char f_color;
46};
47
48struct tty3270_line {
49 struct tty3270_cell *cells;
50 int len;
51};
52
53#define ESCAPE_NPAR 8
54
55
56
57
58
59
60
61
62struct tty3270 {
63 struct raw3270_view view;
64 struct tty_port port;
65 void **freemem_pages;
66 struct list_head freemem;
67
68
69 struct list_head lines;
70 struct list_head update;
71 unsigned char wcc;
72 int nr_lines;
73 int nr_up;
74 unsigned long update_flags;
75 struct string *status;
76 struct raw3270_request *write;
77 struct timer_list timer;
78
79
80 unsigned int cx, cy;
81 unsigned int highlight;
82 unsigned int f_color;
83 struct tty3270_line *screen;
84 unsigned int n_model, n_cols, n_rows;
85 struct work_struct resize_work;
86
87
88 struct string *prompt;
89 struct string *input;
90 struct raw3270_request *read;
91 struct raw3270_request *kreset;
92 unsigned char inattr;
93 int throttle, attn;
94 struct tasklet_struct readlet;
95 struct kbd_data *kbd;
96
97
98 int esc_state, esc_ques, esc_npar;
99 int esc_par[ESCAPE_NPAR];
100 unsigned int saved_cx, saved_cy;
101 unsigned int saved_highlight, saved_f_color;
102
103
104 struct list_head rcl_lines;
105 struct list_head *rcl_walk;
106 int rcl_nr, rcl_max;
107
108
109 unsigned int char_count;
110 char char_buf[TTY3270_CHAR_BUF_SIZE];
111};
112
113
114#define TTY_UPDATE_ERASE 1
115#define TTY_UPDATE_LIST 2
116#define TTY_UPDATE_INPUT 4
117#define TTY_UPDATE_STATUS 8
118#define TTY_UPDATE_ALL 16
119
120static void tty3270_update(struct tty3270 *);
121static void tty3270_resize_work(struct work_struct *work);
122
123
124
125
126static void tty3270_set_timer(struct tty3270 *tp, int expires)
127{
128 if (expires == 0)
129 del_timer(&tp->timer);
130 else
131 mod_timer(&tp->timer, jiffies + expires);
132}
133
134
135
136
137static void
138tty3270_update_prompt(struct tty3270 *tp, char *input, int count)
139{
140 struct string *line;
141 unsigned int off;
142
143 line = tp->prompt;
144 if (count != 0)
145 line->string[5] = TF_INMDT;
146 else
147 line->string[5] = tp->inattr;
148 if (count > tp->view.cols * 2 - 11)
149 count = tp->view.cols * 2 - 11;
150 memcpy(line->string + 6, input, count);
151 line->string[6 + count] = TO_IC;
152
153 if (count < tp->view.cols * 2 - 11) {
154 line->string[7 + count] = TO_RA;
155 line->string[10 + count] = 0;
156 off = tp->view.cols * tp->view.rows - 9;
157 raw3270_buffer_address(tp->view.dev, line->string+count+8, off);
158 line->len = 11 + count;
159 } else
160 line->len = 7 + count;
161 tp->update_flags |= TTY_UPDATE_INPUT;
162}
163
164static void
165tty3270_create_prompt(struct tty3270 *tp)
166{
167 static const unsigned char blueprint[] =
168 { TO_SBA, 0, 0, 0x6e, TO_SF, TF_INPUT,
169
170 TO_IC, TO_RA, 0, 0, 0 };
171 struct string *line;
172 unsigned int offset;
173
174 line = alloc_string(&tp->freemem,
175 sizeof(blueprint) + tp->view.cols * 2 - 9);
176 tp->prompt = line;
177 tp->inattr = TF_INPUT;
178
179 memcpy(line->string, blueprint, sizeof(blueprint));
180 line->len = sizeof(blueprint);
181
182 offset = tp->view.cols * (tp->view.rows - 2);
183 raw3270_buffer_address(tp->view.dev, line->string + 1, offset);
184 offset = tp->view.cols * tp->view.rows - 9;
185 raw3270_buffer_address(tp->view.dev, line->string + 8, offset);
186
187
188 tp->input = alloc_string(&tp->freemem, tp->view.cols * 2 - 9 + 6);
189}
190
191
192
193
194
195static void
196tty3270_update_status(struct tty3270 * tp)
197{
198 char *str;
199
200 str = (tp->nr_up != 0) ? "History" : "Running";
201 memcpy(tp->status->string + 8, str, 7);
202 codepage_convert(tp->view.ascebc, tp->status->string + 8, 7);
203 tp->update_flags |= TTY_UPDATE_STATUS;
204}
205
206static void
207tty3270_create_status(struct tty3270 * tp)
208{
209 static const unsigned char blueprint[] =
210 { TO_SBA, 0, 0, TO_SF, TF_LOG, TO_SA, TAT_COLOR, TAC_GREEN,
211 0, 0, 0, 0, 0, 0, 0, TO_SF, TF_LOG, TO_SA, TAT_COLOR,
212 TAC_RESET };
213 struct string *line;
214 unsigned int offset;
215
216 line = alloc_string(&tp->freemem,sizeof(blueprint));
217 tp->status = line;
218
219 memcpy(line->string, blueprint, sizeof(blueprint));
220
221 offset = tp->view.cols * tp->view.rows - 9;
222 raw3270_buffer_address(tp->view.dev, line->string + 1, offset);
223}
224
225
226
227
228
229static void
230tty3270_update_string(struct tty3270 *tp, struct string *line, int nr)
231{
232 unsigned char *cp;
233
234 raw3270_buffer_address(tp->view.dev, line->string + 1,
235 tp->view.cols * nr);
236 cp = line->string + line->len - 4;
237 if (*cp == TO_RA)
238 raw3270_buffer_address(tp->view.dev, cp + 1,
239 tp->view.cols * (nr + 1));
240}
241
242
243
244
245static void
246tty3270_rebuild_update(struct tty3270 *tp)
247{
248 struct string *s, *n;
249 int line, nr_up;
250
251
252
253
254
255 list_for_each_entry_safe(s, n, &tp->update, update)
256 list_del_init(&s->update);
257 line = tp->view.rows - 3;
258 nr_up = tp->nr_up;
259 list_for_each_entry_reverse(s, &tp->lines, list) {
260 if (nr_up > 0) {
261 nr_up--;
262 continue;
263 }
264 tty3270_update_string(tp, s, line);
265 list_add(&s->update, &tp->update);
266 if (--line < 0)
267 break;
268 }
269 tp->update_flags |= TTY_UPDATE_LIST;
270}
271
272
273
274
275
276static struct string *
277tty3270_alloc_string(struct tty3270 *tp, size_t size)
278{
279 struct string *s, *n;
280
281 s = alloc_string(&tp->freemem, size);
282 if (s)
283 return s;
284 list_for_each_entry_safe(s, n, &tp->lines, list) {
285 BUG_ON(tp->nr_lines <= tp->view.rows - 2);
286 list_del(&s->list);
287 if (!list_empty(&s->update))
288 list_del(&s->update);
289 tp->nr_lines--;
290 if (free_string(&tp->freemem, s) >= size)
291 break;
292 }
293 s = alloc_string(&tp->freemem, size);
294 BUG_ON(!s);
295 if (tp->nr_up != 0 &&
296 tp->nr_up + tp->view.rows - 2 >= tp->nr_lines) {
297 tp->nr_up = tp->nr_lines - tp->view.rows + 2;
298 tty3270_rebuild_update(tp);
299 tty3270_update_status(tp);
300 }
301 return s;
302}
303
304
305
306
307static void
308tty3270_blank_line(struct tty3270 *tp)
309{
310 static const unsigned char blueprint[] =
311 { TO_SBA, 0, 0, TO_SA, TAT_EXTHI, TAX_RESET,
312 TO_SA, TAT_COLOR, TAC_RESET, TO_RA, 0, 0, 0 };
313 struct string *s;
314
315 s = tty3270_alloc_string(tp, sizeof(blueprint));
316 memcpy(s->string, blueprint, sizeof(blueprint));
317 s->len = sizeof(blueprint);
318 list_add_tail(&s->list, &tp->lines);
319 tp->nr_lines++;
320 if (tp->nr_up != 0)
321 tp->nr_up++;
322}
323
324
325
326
327static void
328tty3270_write_callback(struct raw3270_request *rq, void *data)
329{
330 struct tty3270 *tp = container_of(rq->view, struct tty3270, view);
331
332 if (rq->rc != 0) {
333
334 tp->update_flags = TTY_UPDATE_ALL;
335 tty3270_set_timer(tp, 1);
336 }
337 raw3270_request_reset(rq);
338 xchg(&tp->write, rq);
339}
340
341
342
343
344static void
345tty3270_update(struct tty3270 *tp)
346{
347 static char invalid_sba[2] = { 0xff, 0xff };
348 struct raw3270_request *wrq;
349 unsigned long updated;
350 struct string *s, *n;
351 char *sba, *str;
352 int rc, len;
353
354 wrq = xchg(&tp->write, 0);
355 if (!wrq) {
356 tty3270_set_timer(tp, 1);
357 return;
358 }
359
360 spin_lock(&tp->view.lock);
361 updated = 0;
362 if (tp->update_flags & TTY_UPDATE_ALL) {
363 tty3270_rebuild_update(tp);
364 tty3270_update_status(tp);
365 tp->update_flags = TTY_UPDATE_ERASE | TTY_UPDATE_LIST |
366 TTY_UPDATE_INPUT | TTY_UPDATE_STATUS;
367 }
368 if (tp->update_flags & TTY_UPDATE_ERASE) {
369
370 raw3270_request_set_cmd(wrq, TC_EWRITEA);
371 updated |= TTY_UPDATE_ERASE;
372 } else
373 raw3270_request_set_cmd(wrq, TC_WRITE);
374
375 raw3270_request_add_data(wrq, &tp->wcc, 1);
376 tp->wcc = TW_NONE;
377
378
379
380
381 if (tp->update_flags & TTY_UPDATE_STATUS)
382 if (raw3270_request_add_data(wrq, tp->status->string,
383 tp->status->len) == 0)
384 updated |= TTY_UPDATE_STATUS;
385
386
387
388
389 if (tp->update_flags & TTY_UPDATE_INPUT)
390 if (raw3270_request_add_data(wrq, tp->prompt->string,
391 tp->prompt->len) == 0)
392 updated |= TTY_UPDATE_INPUT;
393
394 sba = invalid_sba;
395
396 if (tp->update_flags & TTY_UPDATE_LIST) {
397
398 list_for_each_entry_safe(s, n, &tp->update, update) {
399 str = s->string;
400 len = s->len;
401
402
403
404
405
406 if (s->string[1] == sba[0] && s->string[2] == sba[1])
407 str += 3, len -= 3;
408 if (raw3270_request_add_data(wrq, str, len) != 0)
409 break;
410 list_del_init(&s->update);
411 sba = s->string + s->len - 3;
412 }
413 if (list_empty(&tp->update))
414 updated |= TTY_UPDATE_LIST;
415 }
416 wrq->callback = tty3270_write_callback;
417 rc = raw3270_start(&tp->view, wrq);
418 if (rc == 0) {
419 tp->update_flags &= ~updated;
420 if (tp->update_flags)
421 tty3270_set_timer(tp, 1);
422 } else {
423 raw3270_request_reset(wrq);
424 xchg(&tp->write, wrq);
425 }
426 spin_unlock(&tp->view.lock);
427}
428
429
430
431
432static void
433tty3270_rcl_add(struct tty3270 *tp, char *input, int len)
434{
435 struct string *s;
436
437 tp->rcl_walk = NULL;
438 if (len <= 0)
439 return;
440 if (tp->rcl_nr >= tp->rcl_max) {
441 s = list_entry(tp->rcl_lines.next, struct string, list);
442 list_del(&s->list);
443 free_string(&tp->freemem, s);
444 tp->rcl_nr--;
445 }
446 s = tty3270_alloc_string(tp, len);
447 memcpy(s->string, input, len);
448 list_add_tail(&s->list, &tp->rcl_lines);
449 tp->rcl_nr++;
450}
451
452static void
453tty3270_rcl_backward(struct kbd_data *kbd)
454{
455 struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
456 struct string *s;
457
458 spin_lock_bh(&tp->view.lock);
459 if (tp->inattr == TF_INPUT) {
460 if (tp->rcl_walk && tp->rcl_walk->prev != &tp->rcl_lines)
461 tp->rcl_walk = tp->rcl_walk->prev;
462 else if (!list_empty(&tp->rcl_lines))
463 tp->rcl_walk = tp->rcl_lines.prev;
464 s = tp->rcl_walk ?
465 list_entry(tp->rcl_walk, struct string, list) : NULL;
466 if (tp->rcl_walk) {
467 s = list_entry(tp->rcl_walk, struct string, list);
468 tty3270_update_prompt(tp, s->string, s->len);
469 } else
470 tty3270_update_prompt(tp, NULL, 0);
471 tty3270_set_timer(tp, 1);
472 }
473 spin_unlock_bh(&tp->view.lock);
474}
475
476
477
478
479static void
480tty3270_exit_tty(struct kbd_data *kbd)
481{
482 struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
483
484 raw3270_deactivate_view(&tp->view);
485}
486
487
488
489
490static void
491tty3270_scroll_forward(struct kbd_data *kbd)
492{
493 struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
494 int nr_up;
495
496 spin_lock_bh(&tp->view.lock);
497 nr_up = tp->nr_up - tp->view.rows + 2;
498 if (nr_up < 0)
499 nr_up = 0;
500 if (nr_up != tp->nr_up) {
501 tp->nr_up = nr_up;
502 tty3270_rebuild_update(tp);
503 tty3270_update_status(tp);
504 tty3270_set_timer(tp, 1);
505 }
506 spin_unlock_bh(&tp->view.lock);
507}
508
509
510
511
512static void
513tty3270_scroll_backward(struct kbd_data *kbd)
514{
515 struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
516 int nr_up;
517
518 spin_lock_bh(&tp->view.lock);
519 nr_up = tp->nr_up + tp->view.rows - 2;
520 if (nr_up + tp->view.rows - 2 > tp->nr_lines)
521 nr_up = tp->nr_lines - tp->view.rows + 2;
522 if (nr_up != tp->nr_up) {
523 tp->nr_up = nr_up;
524 tty3270_rebuild_update(tp);
525 tty3270_update_status(tp);
526 tty3270_set_timer(tp, 1);
527 }
528 spin_unlock_bh(&tp->view.lock);
529}
530
531
532
533
534static void
535tty3270_read_tasklet(struct raw3270_request *rrq)
536{
537 static char kreset_data = TW_KR;
538 struct tty3270 *tp = container_of(rrq->view, struct tty3270, view);
539 char *input;
540 int len;
541
542 spin_lock_bh(&tp->view.lock);
543
544
545
546
547
548 input = NULL;
549 len = 0;
550 if (tp->input->string[0] == 0x7d) {
551
552 input = tp->input->string + 6;
553 len = tp->input->len - 6 - rrq->rescnt;
554 if (tp->inattr != TF_INPUTN)
555 tty3270_rcl_add(tp, input, len);
556 if (tp->nr_up > 0) {
557 tp->nr_up = 0;
558 tty3270_rebuild_update(tp);
559 tty3270_update_status(tp);
560 }
561
562 tty3270_update_prompt(tp, NULL, 0);
563 tty3270_set_timer(tp, 1);
564 } else if (tp->input->string[0] == 0x6d) {
565
566 tp->update_flags = TTY_UPDATE_ALL;
567 tty3270_set_timer(tp, 1);
568 }
569 spin_unlock_bh(&tp->view.lock);
570
571
572 raw3270_request_reset(tp->kreset);
573 raw3270_request_set_cmd(tp->kreset, TC_WRITE);
574 raw3270_request_add_data(tp->kreset, &kreset_data, 1);
575 raw3270_start(&tp->view, tp->kreset);
576
577 while (len-- > 0)
578 kbd_keycode(tp->kbd, *input++);
579
580 kbd_keycode(tp->kbd, 256 + tp->input->string[0]);
581
582 raw3270_request_reset(rrq);
583 xchg(&tp->read, rrq);
584 raw3270_put_view(&tp->view);
585}
586
587
588
589
590static void
591tty3270_read_callback(struct raw3270_request *rq, void *data)
592{
593 struct tty3270 *tp = container_of(rq->view, struct tty3270, view);
594 raw3270_get_view(rq->view);
595
596 tasklet_schedule(&tp->readlet);
597}
598
599
600
601
602static void
603tty3270_issue_read(struct tty3270 *tp, int lock)
604{
605 struct raw3270_request *rrq;
606 int rc;
607
608 rrq = xchg(&tp->read, 0);
609 if (!rrq)
610
611 return;
612 rrq->callback = tty3270_read_callback;
613 rrq->callback_data = tp;
614 raw3270_request_set_cmd(rrq, TC_READMOD);
615 raw3270_request_set_data(rrq, tp->input->string, tp->input->len);
616
617 if (lock) {
618 rc = raw3270_start(&tp->view, rrq);
619 } else
620 rc = raw3270_start_irq(&tp->view, rrq);
621 if (rc) {
622 raw3270_request_reset(rrq);
623 xchg(&tp->read, rrq);
624 }
625}
626
627
628
629
630static int
631tty3270_activate(struct raw3270_view *view)
632{
633 struct tty3270 *tp = container_of(view, struct tty3270, view);
634
635 tp->update_flags = TTY_UPDATE_ALL;
636 tty3270_set_timer(tp, 1);
637 return 0;
638}
639
640static void
641tty3270_deactivate(struct raw3270_view *view)
642{
643 struct tty3270 *tp = container_of(view, struct tty3270, view);
644
645 del_timer(&tp->timer);
646}
647
648static int
649tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb)
650{
651
652 if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
653 if (!tp->throttle)
654 tty3270_issue_read(tp, 0);
655 else
656 tp->attn = 1;
657 }
658
659 if (rq) {
660 if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
661 rq->rc = -EIO;
662 else
663
664 rq->rescnt = irb->scsw.cmd.count;
665 }
666 return RAW3270_IO_DONE;
667}
668
669
670
671
672static struct tty3270 *
673tty3270_alloc_view(void)
674{
675 struct tty3270 *tp;
676 int pages;
677
678 tp = kzalloc(sizeof(struct tty3270), GFP_KERNEL);
679 if (!tp)
680 goto out_err;
681 tp->freemem_pages =
682 kmalloc(sizeof(void *) * TTY3270_STRING_PAGES, GFP_KERNEL);
683 if (!tp->freemem_pages)
684 goto out_tp;
685 INIT_LIST_HEAD(&tp->freemem);
686 INIT_LIST_HEAD(&tp->lines);
687 INIT_LIST_HEAD(&tp->update);
688 INIT_LIST_HEAD(&tp->rcl_lines);
689 tp->rcl_max = 20;
690
691 for (pages = 0; pages < TTY3270_STRING_PAGES; pages++) {
692 tp->freemem_pages[pages] = (void *)
693 __get_free_pages(GFP_KERNEL|GFP_DMA, 0);
694 if (!tp->freemem_pages[pages])
695 goto out_pages;
696 add_string_memory(&tp->freemem,
697 tp->freemem_pages[pages], PAGE_SIZE);
698 }
699 tp->write = raw3270_request_alloc(TTY3270_OUTPUT_BUFFER_SIZE);
700 if (IS_ERR(tp->write))
701 goto out_pages;
702 tp->read = raw3270_request_alloc(0);
703 if (IS_ERR(tp->read))
704 goto out_write;
705 tp->kreset = raw3270_request_alloc(1);
706 if (IS_ERR(tp->kreset))
707 goto out_read;
708 tp->kbd = kbd_alloc();
709 if (!tp->kbd)
710 goto out_reset;
711
712 tty_port_init(&tp->port);
713 setup_timer(&tp->timer, (void (*)(unsigned long)) tty3270_update,
714 (unsigned long) tp);
715 tasklet_init(&tp->readlet,
716 (void (*)(unsigned long)) tty3270_read_tasklet,
717 (unsigned long) tp->read);
718 INIT_WORK(&tp->resize_work, tty3270_resize_work);
719
720 return tp;
721
722out_reset:
723 raw3270_request_free(tp->kreset);
724out_read:
725 raw3270_request_free(tp->read);
726out_write:
727 raw3270_request_free(tp->write);
728out_pages:
729 while (pages--)
730 free_pages((unsigned long) tp->freemem_pages[pages], 0);
731 kfree(tp->freemem_pages);
732 tty_port_destroy(&tp->port);
733out_tp:
734 kfree(tp);
735out_err:
736 return ERR_PTR(-ENOMEM);
737}
738
739
740
741
742static void
743tty3270_free_view(struct tty3270 *tp)
744{
745 int pages;
746
747 del_timer_sync(&tp->timer);
748 kbd_free(tp->kbd);
749 raw3270_request_free(tp->kreset);
750 raw3270_request_free(tp->read);
751 raw3270_request_free(tp->write);
752 for (pages = 0; pages < TTY3270_STRING_PAGES; pages++)
753 free_pages((unsigned long) tp->freemem_pages[pages], 0);
754 kfree(tp->freemem_pages);
755 tty_port_destroy(&tp->port);
756 kfree(tp);
757}
758
759
760
761
762static struct tty3270_line *
763tty3270_alloc_screen(unsigned int rows, unsigned int cols)
764{
765 struct tty3270_line *screen;
766 unsigned long size;
767 int lines;
768
769 size = sizeof(struct tty3270_line) * (rows - 2);
770 screen = kzalloc(size, GFP_KERNEL);
771 if (!screen)
772 goto out_err;
773 for (lines = 0; lines < rows - 2; lines++) {
774 size = sizeof(struct tty3270_cell) * cols;
775 screen[lines].cells = kzalloc(size, GFP_KERNEL);
776 if (!screen[lines].cells)
777 goto out_screen;
778 }
779 return screen;
780out_screen:
781 while (lines--)
782 kfree(screen[lines].cells);
783 kfree(screen);
784out_err:
785 return ERR_PTR(-ENOMEM);
786}
787
788
789
790
791static void
792tty3270_free_screen(struct tty3270_line *screen, unsigned int rows)
793{
794 int lines;
795
796 for (lines = 0; lines < rows - 2; lines++)
797 kfree(screen[lines].cells);
798 kfree(screen);
799}
800
801
802
803
804static void tty3270_resize_work(struct work_struct *work)
805{
806 struct tty3270 *tp = container_of(work, struct tty3270, resize_work);
807 struct tty3270_line *screen, *oscreen;
808 struct tty_struct *tty;
809 unsigned int orows;
810 struct winsize ws;
811
812 screen = tty3270_alloc_screen(tp->n_rows, tp->n_cols);
813 if (!screen)
814 return;
815
816 spin_lock_bh(&tp->view.lock);
817 oscreen = tp->screen;
818 orows = tp->view.rows;
819 tp->view.model = tp->n_model;
820 tp->view.rows = tp->n_rows;
821 tp->view.cols = tp->n_cols;
822 tp->screen = screen;
823 free_string(&tp->freemem, tp->prompt);
824 free_string(&tp->freemem, tp->status);
825 tty3270_create_prompt(tp);
826 tty3270_create_status(tp);
827 tp->nr_up = 0;
828 while (tp->nr_lines < tp->view.rows - 2)
829 tty3270_blank_line(tp);
830 tp->update_flags = TTY_UPDATE_ALL;
831 spin_unlock_bh(&tp->view.lock);
832 tty3270_free_screen(oscreen, orows);
833 tty3270_set_timer(tp, 1);
834
835 tty = tty_port_tty_get(&tp->port);
836 if (!tty)
837 return;
838 ws.ws_row = tp->view.rows - 2;
839 ws.ws_col = tp->view.cols;
840 tty_do_resize(tty, &ws);
841}
842
843static void
844tty3270_resize(struct raw3270_view *view, int model, int rows, int cols)
845{
846 struct tty3270 *tp = container_of(view, struct tty3270, view);
847
848 tp->n_model = model;
849 tp->n_rows = rows;
850 tp->n_cols = cols;
851 schedule_work(&tp->resize_work);
852}
853
854
855
856
857static void
858tty3270_release(struct raw3270_view *view)
859{
860 struct tty3270 *tp = container_of(view, struct tty3270, view);
861 struct tty_struct *tty = tty_port_tty_get(&tp->port);
862
863 if (tty) {
864 tty->driver_data = NULL;
865 tty_port_tty_set(&tp->port, NULL);
866 tty_hangup(tty);
867 raw3270_put_view(&tp->view);
868 tty_kref_put(tty);
869 }
870}
871
872
873
874
875static void
876tty3270_free(struct raw3270_view *view)
877{
878 struct tty3270 *tp = container_of(view, struct tty3270, view);
879
880 tty3270_free_screen(tp->screen, tp->view.rows);
881 tty3270_free_view(tp);
882}
883
884
885
886
887static void
888tty3270_del_views(void)
889{
890 int i;
891
892 for (i = RAW3270_FIRSTMINOR; i <= tty3270_max_index; i++) {
893 struct raw3270_view *view = raw3270_find_view(&tty3270_fn, i);
894 if (!IS_ERR(view))
895 raw3270_del_view(view);
896 }
897}
898
899static struct raw3270_fn tty3270_fn = {
900 .activate = tty3270_activate,
901 .deactivate = tty3270_deactivate,
902 .intv = (void *) tty3270_irq,
903 .release = tty3270_release,
904 .free = tty3270_free,
905 .resize = tty3270_resize
906};
907
908
909
910
911static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
912{
913 struct raw3270_view *view;
914 struct tty3270 *tp;
915 int i, rc;
916
917
918 view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR);
919 if (!IS_ERR(view)) {
920 tp = container_of(view, struct tty3270, view);
921 tty->driver_data = tp;
922 tty->winsize.ws_row = tp->view.rows - 2;
923 tty->winsize.ws_col = tp->view.cols;
924 tp->port.low_latency = 0;
925
926 tty_port_tty_set(&tp->port, tty);
927 tp->inattr = TF_INPUT;
928 return tty_port_install(&tp->port, driver, tty);
929 }
930 if (tty3270_max_index < tty->index + 1)
931 tty3270_max_index = tty->index + 1;
932
933
934 tp = tty3270_alloc_view();
935 if (IS_ERR(tp))
936 return PTR_ERR(tp);
937
938 rc = raw3270_add_view(&tp->view, &tty3270_fn,
939 tty->index + RAW3270_FIRSTMINOR);
940 if (rc) {
941 tty3270_free_view(tp);
942 return rc;
943 }
944
945 tp->screen = tty3270_alloc_screen(tp->view.cols, tp->view.rows);
946 if (IS_ERR(tp->screen)) {
947 rc = PTR_ERR(tp->screen);
948 raw3270_put_view(&tp->view);
949 raw3270_del_view(&tp->view);
950 tty3270_free_view(tp);
951 return rc;
952 }
953
954 tty_port_tty_set(&tp->port, tty);
955 tp->port.low_latency = 0;
956 tty->winsize.ws_row = tp->view.rows - 2;
957 tty->winsize.ws_col = tp->view.cols;
958
959 tty3270_create_prompt(tp);
960 tty3270_create_status(tp);
961 tty3270_update_status(tp);
962
963
964 for (i = 0; i < tp->view.rows - 2; i++)
965 tty3270_blank_line(tp);
966
967 tp->kbd->port = &tp->port;
968 tp->kbd->fn_handler[KVAL(K_INCRCONSOLE)] = tty3270_exit_tty;
969 tp->kbd->fn_handler[KVAL(K_SCROLLBACK)] = tty3270_scroll_backward;
970 tp->kbd->fn_handler[KVAL(K_SCROLLFORW)] = tty3270_scroll_forward;
971 tp->kbd->fn_handler[KVAL(K_CONS)] = tty3270_rcl_backward;
972 kbd_ascebc(tp->kbd, tp->view.ascebc);
973
974 raw3270_activate_view(&tp->view);
975
976 rc = tty_port_install(&tp->port, driver, tty);
977 if (rc) {
978 raw3270_put_view(&tp->view);
979 return rc;
980 }
981
982 tty->driver_data = tp;
983
984 return 0;
985}
986
987
988
989
990static int
991tty3270_open(struct tty_struct *tty, struct file *filp)
992{
993 struct tty3270 *tp = tty->driver_data;
994 struct tty_port *port = &tp->port;
995
996 port->count++;
997 tty_port_tty_set(port, tty);
998 return 0;
999}
1000
1001
1002
1003
1004
1005static void
1006tty3270_close(struct tty_struct *tty, struct file * filp)
1007{
1008 struct tty3270 *tp = tty->driver_data;
1009
1010 if (tty->count > 1)
1011 return;
1012 if (tp) {
1013 tty->driver_data = NULL;
1014 tty_port_tty_set(&tp->port, NULL);
1015 }
1016}
1017
1018static void tty3270_cleanup(struct tty_struct *tty)
1019{
1020 struct tty3270 *tp = tty->driver_data;
1021
1022 if (tp)
1023 raw3270_put_view(&tp->view);
1024}
1025
1026
1027
1028
1029static int
1030tty3270_write_room(struct tty_struct *tty)
1031{
1032 return INT_MAX;
1033}
1034
1035
1036
1037
1038
1039static void tty3270_put_character(struct tty3270 *tp, char ch)
1040{
1041 struct tty3270_line *line;
1042 struct tty3270_cell *cell;
1043
1044 line = tp->screen + tp->cy;
1045 if (line->len <= tp->cx) {
1046 while (line->len < tp->cx) {
1047 cell = line->cells + line->len;
1048 cell->character = tp->view.ascebc[' '];
1049 cell->highlight = tp->highlight;
1050 cell->f_color = tp->f_color;
1051 line->len++;
1052 }
1053 line->len++;
1054 }
1055 cell = line->cells + tp->cx;
1056 cell->character = tp->view.ascebc[(unsigned int) ch];
1057 cell->highlight = tp->highlight;
1058 cell->f_color = tp->f_color;
1059}
1060
1061
1062
1063
1064static void
1065tty3270_convert_line(struct tty3270 *tp, int line_nr)
1066{
1067 struct tty3270_line *line;
1068 struct tty3270_cell *cell;
1069 struct string *s, *n;
1070 unsigned char highlight;
1071 unsigned char f_color;
1072 char *cp;
1073 int flen, i;
1074
1075
1076 flen = 3;
1077 line = tp->screen + line_nr;
1078 flen += line->len;
1079 highlight = TAX_RESET;
1080 f_color = TAC_RESET;
1081 for (i = 0, cell = line->cells; i < line->len; i++, cell++) {
1082 if (cell->highlight != highlight) {
1083 flen += 3;
1084 highlight = cell->highlight;
1085 }
1086 if (cell->f_color != f_color) {
1087 flen += 3;
1088 f_color = cell->f_color;
1089 }
1090 }
1091 if (highlight != TAX_RESET)
1092 flen += 3;
1093 if (f_color != TAC_RESET)
1094 flen += 3;
1095 if (line->len < tp->view.cols)
1096 flen += 4;
1097
1098
1099 i = tp->view.rows - 2 - line_nr;
1100 list_for_each_entry_reverse(s, &tp->lines, list)
1101 if (--i <= 0)
1102 break;
1103
1104
1105
1106 if (s->len != flen) {
1107
1108 n = tty3270_alloc_string(tp, flen);
1109 list_add(&n->list, &s->list);
1110 list_del_init(&s->list);
1111 if (!list_empty(&s->update))
1112 list_del_init(&s->update);
1113 free_string(&tp->freemem, s);
1114 s = n;
1115 }
1116
1117
1118 cp = s->string;
1119 *cp++ = TO_SBA;
1120 *cp++ = 0;
1121 *cp++ = 0;
1122
1123 highlight = TAX_RESET;
1124 f_color = TAC_RESET;
1125 for (i = 0, cell = line->cells; i < line->len; i++, cell++) {
1126 if (cell->highlight != highlight) {
1127 *cp++ = TO_SA;
1128 *cp++ = TAT_EXTHI;
1129 *cp++ = cell->highlight;
1130 highlight = cell->highlight;
1131 }
1132 if (cell->f_color != f_color) {
1133 *cp++ = TO_SA;
1134 *cp++ = TAT_COLOR;
1135 *cp++ = cell->f_color;
1136 f_color = cell->f_color;
1137 }
1138 *cp++ = cell->character;
1139 }
1140 if (highlight != TAX_RESET) {
1141 *cp++ = TO_SA;
1142 *cp++ = TAT_EXTHI;
1143 *cp++ = TAX_RESET;
1144 }
1145 if (f_color != TAC_RESET) {
1146 *cp++ = TO_SA;
1147 *cp++ = TAT_COLOR;
1148 *cp++ = TAC_RESET;
1149 }
1150 if (line->len < tp->view.cols) {
1151 *cp++ = TO_RA;
1152 *cp++ = 0;
1153 *cp++ = 0;
1154 *cp++ = 0;
1155 }
1156
1157 if (tp->nr_up + line_nr < tp->view.rows - 2) {
1158
1159 tty3270_update_string(tp, s, line_nr);
1160
1161 if (list_empty(&s->update)) {
1162 list_add_tail(&s->update, &tp->update);
1163 tp->update_flags |= TTY_UPDATE_LIST;
1164 }
1165 }
1166}
1167
1168
1169
1170
1171static void
1172tty3270_cr(struct tty3270 *tp)
1173{
1174 tp->cx = 0;
1175}
1176
1177
1178
1179
1180static void
1181tty3270_lf(struct tty3270 *tp)
1182{
1183 struct tty3270_line temp;
1184 int i;
1185
1186 tty3270_convert_line(tp, tp->cy);
1187 if (tp->cy < tp->view.rows - 3) {
1188 tp->cy++;
1189 return;
1190 }
1191
1192 tty3270_blank_line(tp);
1193 temp = tp->screen[0];
1194 temp.len = 0;
1195 for (i = 0; i < tp->view.rows - 3; i++)
1196 tp->screen[i] = tp->screen[i+1];
1197 tp->screen[tp->view.rows - 3] = temp;
1198 tty3270_rebuild_update(tp);
1199}
1200
1201static void
1202tty3270_ri(struct tty3270 *tp)
1203{
1204 if (tp->cy > 0) {
1205 tty3270_convert_line(tp, tp->cy);
1206 tp->cy--;
1207 }
1208}
1209
1210
1211
1212
1213static void
1214tty3270_insert_characters(struct tty3270 *tp, int n)
1215{
1216 struct tty3270_line *line;
1217 int k;
1218
1219 line = tp->screen + tp->cy;
1220 while (line->len < tp->cx) {
1221 line->cells[line->len].character = tp->view.ascebc[' '];
1222 line->cells[line->len].highlight = TAX_RESET;
1223 line->cells[line->len].f_color = TAC_RESET;
1224 line->len++;
1225 }
1226 if (n > tp->view.cols - tp->cx)
1227 n = tp->view.cols - tp->cx;
1228 k = min_t(int, line->len - tp->cx, tp->view.cols - tp->cx - n);
1229 while (k--)
1230 line->cells[tp->cx + n + k] = line->cells[tp->cx + k];
1231 line->len += n;
1232 if (line->len > tp->view.cols)
1233 line->len = tp->view.cols;
1234 while (n-- > 0) {
1235 line->cells[tp->cx + n].character = tp->view.ascebc[' '];
1236 line->cells[tp->cx + n].highlight = tp->highlight;
1237 line->cells[tp->cx + n].f_color = tp->f_color;
1238 }
1239}
1240
1241
1242
1243
1244static void
1245tty3270_delete_characters(struct tty3270 *tp, int n)
1246{
1247 struct tty3270_line *line;
1248 int i;
1249
1250 line = tp->screen + tp->cy;
1251 if (line->len <= tp->cx)
1252 return;
1253 if (line->len - tp->cx <= n) {
1254 line->len = tp->cx;
1255 return;
1256 }
1257 for (i = tp->cx; i + n < line->len; i++)
1258 line->cells[i] = line->cells[i + n];
1259 line->len -= n;
1260}
1261
1262
1263
1264
1265static void
1266tty3270_erase_characters(struct tty3270 *tp, int n)
1267{
1268 struct tty3270_line *line;
1269 struct tty3270_cell *cell;
1270
1271 line = tp->screen + tp->cy;
1272 while (line->len > tp->cx && n-- > 0) {
1273 cell = line->cells + tp->cx++;
1274 cell->character = ' ';
1275 cell->highlight = TAX_RESET;
1276 cell->f_color = TAC_RESET;
1277 }
1278 tp->cx += n;
1279 tp->cx = min_t(int, tp->cx, tp->view.cols - 1);
1280}
1281
1282
1283
1284
1285
1286
1287
1288static void
1289tty3270_erase_line(struct tty3270 *tp, int mode)
1290{
1291 struct tty3270_line *line;
1292 struct tty3270_cell *cell;
1293 int i;
1294
1295 line = tp->screen + tp->cy;
1296 if (mode == 0)
1297 line->len = tp->cx;
1298 else if (mode == 1) {
1299 for (i = 0; i < tp->cx; i++) {
1300 cell = line->cells + i;
1301 cell->character = ' ';
1302 cell->highlight = TAX_RESET;
1303 cell->f_color = TAC_RESET;
1304 }
1305 if (line->len <= tp->cx)
1306 line->len = tp->cx + 1;
1307 } else if (mode == 2)
1308 line->len = 0;
1309 tty3270_convert_line(tp, tp->cy);
1310}
1311
1312
1313
1314
1315
1316
1317
1318static void
1319tty3270_erase_display(struct tty3270 *tp, int mode)
1320{
1321 int i;
1322
1323 if (mode == 0) {
1324 tty3270_erase_line(tp, 0);
1325 for (i = tp->cy + 1; i < tp->view.rows - 2; i++) {
1326 tp->screen[i].len = 0;
1327 tty3270_convert_line(tp, i);
1328 }
1329 } else if (mode == 1) {
1330 for (i = 0; i < tp->cy; i++) {
1331 tp->screen[i].len = 0;
1332 tty3270_convert_line(tp, i);
1333 }
1334 tty3270_erase_line(tp, 1);
1335 } else if (mode == 2) {
1336 for (i = 0; i < tp->view.rows - 2; i++) {
1337 tp->screen[i].len = 0;
1338 tty3270_convert_line(tp, i);
1339 }
1340 }
1341 tty3270_rebuild_update(tp);
1342}
1343
1344
1345
1346
1347
1348static void
1349tty3270_set_attributes(struct tty3270 *tp)
1350{
1351 static unsigned char f_colors[] = {
1352 TAC_DEFAULT, TAC_RED, TAC_GREEN, TAC_YELLOW, TAC_BLUE,
1353 TAC_PINK, TAC_TURQ, TAC_WHITE, 0, TAC_DEFAULT
1354 };
1355 int i, attr;
1356
1357 for (i = 0; i <= tp->esc_npar; i++) {
1358 attr = tp->esc_par[i];
1359 switch (attr) {
1360 case 0:
1361 tp->highlight = TAX_RESET;
1362 tp->f_color = TAC_RESET;
1363 break;
1364
1365 case 4:
1366 tp->highlight = TAX_UNDER;
1367 break;
1368 case 5:
1369 tp->highlight = TAX_BLINK;
1370 break;
1371 case 7:
1372 tp->highlight = TAX_REVER;
1373 break;
1374 case 24:
1375 if (tp->highlight == TAX_UNDER)
1376 tp->highlight = TAX_RESET;
1377 break;
1378 case 25:
1379 if (tp->highlight == TAX_BLINK)
1380 tp->highlight = TAX_RESET;
1381 break;
1382 case 27:
1383 if (tp->highlight == TAX_REVER)
1384 tp->highlight = TAX_RESET;
1385 break;
1386
1387 case 30:
1388 case 31:
1389 case 32:
1390 case 33:
1391 case 34:
1392 case 35:
1393 case 36:
1394 case 37:
1395 case 39:
1396 tp->f_color = f_colors[attr - 30];
1397 break;
1398 }
1399 }
1400}
1401
1402static inline int
1403tty3270_getpar(struct tty3270 *tp, int ix)
1404{
1405 return (tp->esc_par[ix] > 0) ? tp->esc_par[ix] : 1;
1406}
1407
1408static void
1409tty3270_goto_xy(struct tty3270 *tp, int cx, int cy)
1410{
1411 int max_cx = max(0, cx);
1412 int max_cy = max(0, cy);
1413
1414 tp->cx = min_t(int, tp->view.cols - 1, max_cx);
1415 cy = min_t(int, tp->view.rows - 3, max_cy);
1416 if (cy != tp->cy) {
1417 tty3270_convert_line(tp, tp->cy);
1418 tp->cy = cy;
1419 }
1420}
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442static void
1443tty3270_escape_sequence(struct tty3270 *tp, char ch)
1444{
1445 enum { ESnormal, ESesc, ESsquare, ESgetpars };
1446
1447 if (tp->esc_state == ESnormal) {
1448 if (ch == 0x1b)
1449
1450 tp->esc_state = ESesc;
1451 return;
1452 }
1453 if (tp->esc_state == ESesc) {
1454 tp->esc_state = ESnormal;
1455 switch (ch) {
1456 case '[':
1457 tp->esc_state = ESsquare;
1458 break;
1459 case 'E':
1460 tty3270_cr(tp);
1461 tty3270_lf(tp);
1462 break;
1463 case 'M':
1464 tty3270_ri(tp);
1465 break;
1466 case 'D':
1467 tty3270_lf(tp);
1468 break;
1469 case 'Z':
1470 kbd_puts_queue(&tp->port, "\033[?6c");
1471 break;
1472 case '7':
1473 tp->saved_cx = tp->cx;
1474 tp->saved_cy = tp->cy;
1475 tp->saved_highlight = tp->highlight;
1476 tp->saved_f_color = tp->f_color;
1477 break;
1478 case '8':
1479 tty3270_convert_line(tp, tp->cy);
1480 tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy);
1481 tp->highlight = tp->saved_highlight;
1482 tp->f_color = tp->saved_f_color;
1483 break;
1484 case 'c':
1485 tp->cx = tp->saved_cx = 0;
1486 tp->cy = tp->saved_cy = 0;
1487 tp->highlight = tp->saved_highlight = TAX_RESET;
1488 tp->f_color = tp->saved_f_color = TAC_RESET;
1489 tty3270_erase_display(tp, 2);
1490 break;
1491 }
1492 return;
1493 }
1494 if (tp->esc_state == ESsquare) {
1495 tp->esc_state = ESgetpars;
1496 memset(tp->esc_par, 0, sizeof(tp->esc_par));
1497 tp->esc_npar = 0;
1498 tp->esc_ques = (ch == '?');
1499 if (tp->esc_ques)
1500 return;
1501 }
1502 if (tp->esc_state == ESgetpars) {
1503 if (ch == ';' && tp->esc_npar < ESCAPE_NPAR - 1) {
1504 tp->esc_npar++;
1505 return;
1506 }
1507 if (ch >= '0' && ch <= '9') {
1508 tp->esc_par[tp->esc_npar] *= 10;
1509 tp->esc_par[tp->esc_npar] += ch - '0';
1510 return;
1511 }
1512 }
1513 tp->esc_state = ESnormal;
1514 if (ch == 'n' && !tp->esc_ques) {
1515 if (tp->esc_par[0] == 5)
1516 kbd_puts_queue(&tp->port, "\033[0n");
1517 else if (tp->esc_par[0] == 6) {
1518 char buf[40];
1519 sprintf(buf, "\033[%d;%dR", tp->cy + 1, tp->cx + 1);
1520 kbd_puts_queue(&tp->port, buf);
1521 }
1522 return;
1523 }
1524 if (tp->esc_ques)
1525 return;
1526 switch (ch) {
1527 case 'm':
1528 tty3270_set_attributes(tp);
1529 break;
1530 case 'H':
1531 case 'f':
1532 tty3270_goto_xy(tp, tty3270_getpar(tp, 1) - 1,
1533 tty3270_getpar(tp, 0) - 1);
1534 break;
1535 case 'd':
1536 tty3270_goto_xy(tp, tp->cx, tty3270_getpar(tp, 0) - 1);
1537 break;
1538 case 'A':
1539 case 'F':
1540 tty3270_goto_xy(tp, tp->cx, tp->cy - tty3270_getpar(tp, 0));
1541 break;
1542 case 'B':
1543 case 'e':
1544 case 'E':
1545 tty3270_goto_xy(tp, tp->cx, tp->cy + tty3270_getpar(tp, 0));
1546 break;
1547 case 'C':
1548 case 'a':
1549 tty3270_goto_xy(tp, tp->cx + tty3270_getpar(tp, 0), tp->cy);
1550 break;
1551 case 'D':
1552 tty3270_goto_xy(tp, tp->cx - tty3270_getpar(tp, 0), tp->cy);
1553 break;
1554 case 'G':
1555 case '`':
1556 tty3270_goto_xy(tp, tty3270_getpar(tp, 0), tp->cy);
1557 break;
1558 case 'X':
1559 tty3270_erase_characters(tp, tty3270_getpar(tp, 0));
1560 break;
1561 case 'J':
1562 tty3270_erase_display(tp, tp->esc_par[0]);
1563 break;
1564 case 'K':
1565 tty3270_erase_line(tp, tp->esc_par[0]);
1566 break;
1567 case 'P':
1568 tty3270_delete_characters(tp, tty3270_getpar(tp, 0));
1569 break;
1570 case '@':
1571 tty3270_insert_characters(tp, tty3270_getpar(tp, 0));
1572 break;
1573 case 's':
1574 tp->saved_cx = tp->cx;
1575 tp->saved_cy = tp->cy;
1576 tp->saved_highlight = tp->highlight;
1577 tp->saved_f_color = tp->f_color;
1578 break;
1579 case 'u':
1580 tty3270_convert_line(tp, tp->cy);
1581 tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy);
1582 tp->highlight = tp->saved_highlight;
1583 tp->f_color = tp->saved_f_color;
1584 break;
1585 }
1586}
1587
1588
1589
1590
1591static void
1592tty3270_do_write(struct tty3270 *tp, struct tty_struct *tty,
1593 const unsigned char *buf, int count)
1594{
1595 int i_msg, i;
1596
1597 spin_lock_bh(&tp->view.lock);
1598 for (i_msg = 0; !tty->stopped && i_msg < count; i_msg++) {
1599 if (tp->esc_state != 0) {
1600
1601 tty3270_escape_sequence(tp, buf[i_msg]);
1602 continue;
1603 }
1604
1605 switch (buf[i_msg]) {
1606 case 0x07:
1607 tp->wcc |= TW_PLUSALARM;
1608 break;
1609 case 0x08:
1610 if (tp->cx > 0) {
1611 tp->cx--;
1612 tty3270_put_character(tp, ' ');
1613 }
1614 break;
1615 case 0x09:
1616 for (i = tp->cx % 8; i < 8; i++) {
1617 if (tp->cx >= tp->view.cols) {
1618 tty3270_cr(tp);
1619 tty3270_lf(tp);
1620 break;
1621 }
1622 tty3270_put_character(tp, ' ');
1623 tp->cx++;
1624 }
1625 break;
1626 case 0x0a:
1627 tty3270_cr(tp);
1628 tty3270_lf(tp);
1629 break;
1630 case 0x0c:
1631 tty3270_erase_display(tp, 2);
1632 tp->cx = tp->cy = 0;
1633 break;
1634 case 0x0d:
1635 tp->cx = 0;
1636 break;
1637 case 0x0f:
1638 break;
1639 case 0x1b:
1640 tty3270_escape_sequence(tp, buf[i_msg]);
1641 break;
1642 default:
1643 if (tp->cx >= tp->view.cols) {
1644 tty3270_cr(tp);
1645 tty3270_lf(tp);
1646 }
1647 tty3270_put_character(tp, buf[i_msg]);
1648 tp->cx++;
1649 break;
1650 }
1651 }
1652
1653 tty3270_convert_line(tp, tp->cy);
1654
1655
1656 if (!timer_pending(&tp->timer))
1657 tty3270_set_timer(tp, HZ/10);
1658
1659 spin_unlock_bh(&tp->view.lock);
1660}
1661
1662
1663
1664
1665static int
1666tty3270_write(struct tty_struct * tty,
1667 const unsigned char *buf, int count)
1668{
1669 struct tty3270 *tp;
1670
1671 tp = tty->driver_data;
1672 if (!tp)
1673 return 0;
1674 if (tp->char_count > 0) {
1675 tty3270_do_write(tp, tty, tp->char_buf, tp->char_count);
1676 tp->char_count = 0;
1677 }
1678 tty3270_do_write(tp, tty, buf, count);
1679 return count;
1680}
1681
1682
1683
1684
1685static int tty3270_put_char(struct tty_struct *tty, unsigned char ch)
1686{
1687 struct tty3270 *tp;
1688
1689 tp = tty->driver_data;
1690 if (!tp || tp->char_count >= TTY3270_CHAR_BUF_SIZE)
1691 return 0;
1692 tp->char_buf[tp->char_count++] = ch;
1693 return 1;
1694}
1695
1696
1697
1698
1699
1700static void
1701tty3270_flush_chars(struct tty_struct *tty)
1702{
1703 struct tty3270 *tp;
1704
1705 tp = tty->driver_data;
1706 if (!tp)
1707 return;
1708 if (tp->char_count > 0) {
1709 tty3270_do_write(tp, tty, tp->char_buf, tp->char_count);
1710 tp->char_count = 0;
1711 }
1712}
1713
1714
1715
1716
1717
1718
1719static int
1720tty3270_chars_in_buffer(struct tty_struct *tty)
1721{
1722 return 0;
1723}
1724
1725static void
1726tty3270_flush_buffer(struct tty_struct *tty)
1727{
1728}
1729
1730
1731
1732
1733static void
1734tty3270_set_termios(struct tty_struct *tty, struct ktermios *old)
1735{
1736 struct tty3270 *tp;
1737 int new;
1738
1739 tp = tty->driver_data;
1740 if (!tp)
1741 return;
1742 spin_lock_bh(&tp->view.lock);
1743 if (L_ICANON(tty)) {
1744 new = L_ECHO(tty) ? TF_INPUT: TF_INPUTN;
1745 if (new != tp->inattr) {
1746 tp->inattr = new;
1747 tty3270_update_prompt(tp, NULL, 0);
1748 tty3270_set_timer(tp, 1);
1749 }
1750 }
1751 spin_unlock_bh(&tp->view.lock);
1752}
1753
1754
1755
1756
1757static void
1758tty3270_throttle(struct tty_struct * tty)
1759{
1760 struct tty3270 *tp;
1761
1762 tp = tty->driver_data;
1763 if (!tp)
1764 return;
1765 tp->throttle = 1;
1766}
1767
1768
1769
1770
1771static void
1772tty3270_unthrottle(struct tty_struct * tty)
1773{
1774 struct tty3270 *tp;
1775
1776 tp = tty->driver_data;
1777 if (!tp)
1778 return;
1779 tp->throttle = 0;
1780 if (tp->attn)
1781 tty3270_issue_read(tp, 1);
1782}
1783
1784
1785
1786
1787static void
1788tty3270_hangup(struct tty_struct *tty)
1789{
1790
1791}
1792
1793static void
1794tty3270_wait_until_sent(struct tty_struct *tty, int timeout)
1795{
1796}
1797
1798static int tty3270_ioctl(struct tty_struct *tty, unsigned int cmd,
1799 unsigned long arg)
1800{
1801 struct tty3270 *tp;
1802
1803 tp = tty->driver_data;
1804 if (!tp)
1805 return -ENODEV;
1806 if (tty->flags & (1 << TTY_IO_ERROR))
1807 return -EIO;
1808 return kbd_ioctl(tp->kbd, cmd, arg);
1809}
1810
1811#ifdef CONFIG_COMPAT
1812static long tty3270_compat_ioctl(struct tty_struct *tty,
1813 unsigned int cmd, unsigned long arg)
1814{
1815 struct tty3270 *tp;
1816
1817 tp = tty->driver_data;
1818 if (!tp)
1819 return -ENODEV;
1820 if (tty->flags & (1 << TTY_IO_ERROR))
1821 return -EIO;
1822 return kbd_ioctl(tp->kbd, cmd, (unsigned long)compat_ptr(arg));
1823}
1824#endif
1825
1826static const struct tty_operations tty3270_ops = {
1827 .install = tty3270_install,
1828 .cleanup = tty3270_cleanup,
1829 .open = tty3270_open,
1830 .close = tty3270_close,
1831 .write = tty3270_write,
1832 .put_char = tty3270_put_char,
1833 .flush_chars = tty3270_flush_chars,
1834 .write_room = tty3270_write_room,
1835 .chars_in_buffer = tty3270_chars_in_buffer,
1836 .flush_buffer = tty3270_flush_buffer,
1837 .throttle = tty3270_throttle,
1838 .unthrottle = tty3270_unthrottle,
1839 .hangup = tty3270_hangup,
1840 .wait_until_sent = tty3270_wait_until_sent,
1841 .ioctl = tty3270_ioctl,
1842#ifdef CONFIG_COMPAT
1843 .compat_ioctl = tty3270_compat_ioctl,
1844#endif
1845 .set_termios = tty3270_set_termios
1846};
1847
1848void tty3270_create_cb(int minor)
1849{
1850 tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL);
1851}
1852
1853void tty3270_destroy_cb(int minor)
1854{
1855 tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR);
1856}
1857
1858struct raw3270_notifier tty3270_notifier =
1859{
1860 .create = tty3270_create_cb,
1861 .destroy = tty3270_destroy_cb,
1862};
1863
1864
1865
1866
1867
1868static int __init tty3270_init(void)
1869{
1870 struct tty_driver *driver;
1871 int ret;
1872
1873 driver = tty_alloc_driver(RAW3270_MAXDEVS,
1874 TTY_DRIVER_REAL_RAW |
1875 TTY_DRIVER_DYNAMIC_DEV |
1876 TTY_DRIVER_RESET_TERMIOS);
1877 if (IS_ERR(driver))
1878 return PTR_ERR(driver);
1879
1880
1881
1882
1883
1884
1885 driver->driver_name = "tty3270";
1886 driver->name = "3270/tty";
1887 driver->major = IBM_TTY3270_MAJOR;
1888 driver->minor_start = RAW3270_FIRSTMINOR;
1889 driver->name_base = RAW3270_FIRSTMINOR;
1890 driver->type = TTY_DRIVER_TYPE_SYSTEM;
1891 driver->subtype = SYSTEM_TYPE_TTY;
1892 driver->init_termios = tty_std_termios;
1893 tty_set_operations(driver, &tty3270_ops);
1894 ret = tty_register_driver(driver);
1895 if (ret) {
1896 put_tty_driver(driver);
1897 return ret;
1898 }
1899 tty3270_driver = driver;
1900 raw3270_register_notifier(&tty3270_notifier);
1901 return 0;
1902}
1903
1904static void __exit
1905tty3270_exit(void)
1906{
1907 struct tty_driver *driver;
1908
1909 raw3270_unregister_notifier(&tty3270_notifier);
1910 driver = tty3270_driver;
1911 tty3270_driver = NULL;
1912 tty_unregister_driver(driver);
1913 put_tty_driver(driver);
1914 tty3270_del_views();
1915}
1916
1917MODULE_LICENSE("GPL");
1918MODULE_ALIAS_CHARDEV_MAJOR(IBM_TTY3270_MAJOR);
1919
1920module_init(tty3270_init);
1921module_exit(tty3270_exit);
1922