Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/s390/char/tty3270.c | |
3 | * IBM/3270 Driver - tty functions. | |
4 | * | |
5 | * Author(s): | |
6 | * Original 3270 Code for 2.4 written by Richard Hitt (UTS Global) | |
7 | * Rewritten for 2.5 by Martin Schwidefsky <schwidefsky@de.ibm.com> | |
8 | * -- Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | #include <linux/module.h> |
12 | #include <linux/types.h> | |
13 | #include <linux/kdev_t.h> | |
14 | #include <linux/tty.h> | |
15 | #include <linux/vt_kern.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/console.h> | |
18 | #include <linux/interrupt.h> | |
19 | ||
20 | #include <linux/slab.h> | |
21 | #include <linux/bootmem.h> | |
9d4bfd41 | 22 | #include <linux/compat.h> |
1da177e4 LT |
23 | |
24 | #include <asm/ccwdev.h> | |
25 | #include <asm/cio.h> | |
26 | #include <asm/ebcdic.h> | |
27 | #include <asm/uaccess.h> | |
28 | ||
1da177e4 | 29 | #include "raw3270.h" |
364c8558 | 30 | #include "tty3270.h" |
1da177e4 LT |
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 | ||
37 | struct tty_driver *tty3270_driver; | |
38 | static int tty3270_max_index; | |
39 | ||
2b67fc46 | 40 | static struct raw3270_fn tty3270_fn; |
1da177e4 LT |
41 | |
42 | struct tty3270_cell { | |
43 | unsigned char character; | |
44 | unsigned char highlight; | |
45 | unsigned char f_color; | |
46 | }; | |
47 | ||
48 | struct tty3270_line { | |
49 | struct tty3270_cell *cells; | |
50 | int len; | |
51 | }; | |
52 | ||
53 | #define ESCAPE_NPAR 8 | |
54 | ||
55 | /* | |
56 | * The main tty view data structure. | |
57 | * FIXME: | |
58 | * 1) describe line orientation & lines list concept against screen | |
59 | * 2) describe conversion of screen to lines | |
60 | * 3) describe line format. | |
61 | */ | |
62 | struct tty3270 { | |
63 | struct raw3270_view view; | |
64 | struct tty_struct *tty; /* Pointer to tty structure */ | |
65 | void **freemem_pages; /* Array of pages used for freemem. */ | |
66 | struct list_head freemem; /* List of free memory for strings. */ | |
67 | ||
68 | /* Output stuff. */ | |
69 | struct list_head lines; /* List of lines. */ | |
70 | struct list_head update; /* List of lines to update. */ | |
71 | unsigned char wcc; /* Write control character. */ | |
72 | int nr_lines; /* # lines in list. */ | |
73 | int nr_up; /* # lines up in history. */ | |
74 | unsigned long update_flags; /* Update indication bits. */ | |
75 | struct string *status; /* Lower right of display. */ | |
76 | struct raw3270_request *write; /* Single write request. */ | |
77 | struct timer_list timer; /* Output delay timer. */ | |
78 | ||
79 | /* Current tty screen. */ | |
80 | unsigned int cx, cy; /* Current output position. */ | |
81 | unsigned int highlight; /* Blink/reverse/underscore */ | |
82 | unsigned int f_color; /* Foreground color */ | |
83 | struct tty3270_line *screen; | |
84 | ||
85 | /* Input stuff. */ | |
86 | struct string *prompt; /* Output string for input area. */ | |
87 | struct string *input; /* Input string for read request. */ | |
88 | struct raw3270_request *read; /* Single read request. */ | |
89 | struct raw3270_request *kreset; /* Single keyboard reset request. */ | |
90 | unsigned char inattr; /* Visible/invisible input. */ | |
91 | int throttle, attn; /* tty throttle/unthrottle. */ | |
92 | struct tasklet_struct readlet; /* Tasklet to issue read request. */ | |
93 | struct kbd_data *kbd; /* key_maps stuff. */ | |
94 | ||
95 | /* Escape sequence parsing. */ | |
96 | int esc_state, esc_ques, esc_npar; | |
97 | int esc_par[ESCAPE_NPAR]; | |
98 | unsigned int saved_cx, saved_cy; | |
99 | unsigned int saved_highlight, saved_f_color; | |
100 | ||
101 | /* Command recalling. */ | |
102 | struct list_head rcl_lines; /* List of recallable lines. */ | |
103 | struct list_head *rcl_walk; /* Point in rcl_lines list. */ | |
104 | int rcl_nr, rcl_max; /* Number/max number of rcl_lines. */ | |
105 | ||
106 | /* Character array for put_char/flush_chars. */ | |
107 | unsigned int char_count; | |
108 | char char_buf[TTY3270_CHAR_BUF_SIZE]; | |
109 | }; | |
110 | ||
111 | /* tty3270->update_flags. See tty3270_update for details. */ | |
112 | #define TTY_UPDATE_ERASE 1 /* Use EWRITEA instead of WRITE. */ | |
113 | #define TTY_UPDATE_LIST 2 /* Update lines in tty3270->update. */ | |
114 | #define TTY_UPDATE_INPUT 4 /* Update input line. */ | |
115 | #define TTY_UPDATE_STATUS 8 /* Update status line. */ | |
205d7ab9 | 116 | #define TTY_UPDATE_ALL 16 /* Recreate screen. */ |
1da177e4 LT |
117 | |
118 | static void tty3270_update(struct tty3270 *); | |
119 | ||
120 | /* | |
121 | * Setup timeout for a device. On timeout trigger an update. | |
122 | */ | |
2b67fc46 | 123 | static void tty3270_set_timer(struct tty3270 *tp, int expires) |
1da177e4 | 124 | { |
205d7ab9 MS |
125 | if (expires == 0) |
126 | del_timer(&tp->timer); | |
127 | else | |
128 | mod_timer(&tp->timer, jiffies + expires); | |
1da177e4 LT |
129 | } |
130 | ||
131 | /* | |
132 | * The input line are the two last lines of the screen. | |
133 | */ | |
134 | static void | |
135 | tty3270_update_prompt(struct tty3270 *tp, char *input, int count) | |
136 | { | |
137 | struct string *line; | |
138 | unsigned int off; | |
139 | ||
140 | line = tp->prompt; | |
141 | if (count != 0) | |
142 | line->string[5] = TF_INMDT; | |
143 | else | |
144 | line->string[5] = tp->inattr; | |
145 | if (count > tp->view.cols * 2 - 11) | |
146 | count = tp->view.cols * 2 - 11; | |
147 | memcpy(line->string + 6, input, count); | |
148 | line->string[6 + count] = TO_IC; | |
149 | /* Clear to end of input line. */ | |
150 | if (count < tp->view.cols * 2 - 11) { | |
151 | line->string[7 + count] = TO_RA; | |
152 | line->string[10 + count] = 0; | |
153 | off = tp->view.cols * tp->view.rows - 9; | |
154 | raw3270_buffer_address(tp->view.dev, line->string+count+8, off); | |
155 | line->len = 11 + count; | |
156 | } else | |
157 | line->len = 7 + count; | |
158 | tp->update_flags |= TTY_UPDATE_INPUT; | |
159 | } | |
160 | ||
161 | static void | |
162 | tty3270_create_prompt(struct tty3270 *tp) | |
163 | { | |
164 | static const unsigned char blueprint[] = | |
165 | { TO_SBA, 0, 0, 0x6e, TO_SF, TF_INPUT, | |
166 | /* empty input string */ | |
167 | TO_IC, TO_RA, 0, 0, 0 }; | |
168 | struct string *line; | |
169 | unsigned int offset; | |
170 | ||
171 | line = alloc_string(&tp->freemem, | |
172 | sizeof(blueprint) + tp->view.cols * 2 - 9); | |
173 | tp->prompt = line; | |
174 | tp->inattr = TF_INPUT; | |
175 | /* Copy blueprint to status line */ | |
176 | memcpy(line->string, blueprint, sizeof(blueprint)); | |
177 | line->len = sizeof(blueprint); | |
178 | /* Set output offsets. */ | |
179 | offset = tp->view.cols * (tp->view.rows - 2); | |
180 | raw3270_buffer_address(tp->view.dev, line->string + 1, offset); | |
181 | offset = tp->view.cols * tp->view.rows - 9; | |
182 | raw3270_buffer_address(tp->view.dev, line->string + 8, offset); | |
183 | ||
184 | /* Allocate input string for reading. */ | |
185 | tp->input = alloc_string(&tp->freemem, tp->view.cols * 2 - 9 + 6); | |
186 | } | |
187 | ||
188 | /* | |
189 | * The status line is the last line of the screen. It shows the string | |
190 | * "Running"/"Holding" in the lower right corner of the screen. | |
191 | */ | |
192 | static void | |
193 | tty3270_update_status(struct tty3270 * tp) | |
194 | { | |
195 | char *str; | |
196 | ||
197 | str = (tp->nr_up != 0) ? "History" : "Running"; | |
198 | memcpy(tp->status->string + 8, str, 7); | |
199 | codepage_convert(tp->view.ascebc, tp->status->string + 8, 7); | |
200 | tp->update_flags |= TTY_UPDATE_STATUS; | |
201 | } | |
202 | ||
203 | static void | |
204 | tty3270_create_status(struct tty3270 * tp) | |
205 | { | |
206 | static const unsigned char blueprint[] = | |
207 | { TO_SBA, 0, 0, TO_SF, TF_LOG, TO_SA, TAT_COLOR, TAC_GREEN, | |
208 | 0, 0, 0, 0, 0, 0, 0, TO_SF, TF_LOG, TO_SA, TAT_COLOR, | |
209 | TAC_RESET }; | |
210 | struct string *line; | |
211 | unsigned int offset; | |
212 | ||
213 | line = alloc_string(&tp->freemem,sizeof(blueprint)); | |
214 | tp->status = line; | |
215 | /* Copy blueprint to status line */ | |
216 | memcpy(line->string, blueprint, sizeof(blueprint)); | |
217 | /* Set address to start of status string (= last 9 characters). */ | |
218 | offset = tp->view.cols * tp->view.rows - 9; | |
219 | raw3270_buffer_address(tp->view.dev, line->string + 1, offset); | |
220 | } | |
221 | ||
222 | /* | |
223 | * Set output offsets to 3270 datastream fragment of a tty string. | |
224 | * (TO_SBA offset at the start and TO_RA offset at the end of the string) | |
225 | */ | |
226 | static void | |
227 | tty3270_update_string(struct tty3270 *tp, struct string *line, int nr) | |
228 | { | |
229 | unsigned char *cp; | |
230 | ||
231 | raw3270_buffer_address(tp->view.dev, line->string + 1, | |
232 | tp->view.cols * nr); | |
233 | cp = line->string + line->len - 4; | |
234 | if (*cp == TO_RA) | |
235 | raw3270_buffer_address(tp->view.dev, cp + 1, | |
236 | tp->view.cols * (nr + 1)); | |
237 | } | |
238 | ||
239 | /* | |
240 | * Rebuild update list to print all lines. | |
241 | */ | |
242 | static void | |
243 | tty3270_rebuild_update(struct tty3270 *tp) | |
244 | { | |
245 | struct string *s, *n; | |
246 | int line, nr_up; | |
247 | ||
248 | /* | |
249 | * Throw away update list and create a new one, | |
250 | * containing all lines that will fit on the screen. | |
251 | */ | |
252 | list_for_each_entry_safe(s, n, &tp->update, update) | |
253 | list_del_init(&s->update); | |
254 | line = tp->view.rows - 3; | |
255 | nr_up = tp->nr_up; | |
256 | list_for_each_entry_reverse(s, &tp->lines, list) { | |
257 | if (nr_up > 0) { | |
258 | nr_up--; | |
259 | continue; | |
260 | } | |
261 | tty3270_update_string(tp, s, line); | |
262 | list_add(&s->update, &tp->update); | |
263 | if (--line < 0) | |
264 | break; | |
265 | } | |
266 | tp->update_flags |= TTY_UPDATE_LIST; | |
267 | } | |
268 | ||
269 | /* | |
270 | * Alloc string for size bytes. If there is not enough room in | |
271 | * freemem, free strings until there is room. | |
272 | */ | |
273 | static struct string * | |
274 | tty3270_alloc_string(struct tty3270 *tp, size_t size) | |
275 | { | |
276 | struct string *s, *n; | |
277 | ||
278 | s = alloc_string(&tp->freemem, size); | |
279 | if (s) | |
280 | return s; | |
281 | list_for_each_entry_safe(s, n, &tp->lines, list) { | |
282 | BUG_ON(tp->nr_lines <= tp->view.rows - 2); | |
283 | list_del(&s->list); | |
284 | if (!list_empty(&s->update)) | |
285 | list_del(&s->update); | |
286 | tp->nr_lines--; | |
287 | if (free_string(&tp->freemem, s) >= size) | |
288 | break; | |
289 | } | |
290 | s = alloc_string(&tp->freemem, size); | |
291 | BUG_ON(!s); | |
292 | if (tp->nr_up != 0 && | |
293 | tp->nr_up + tp->view.rows - 2 >= tp->nr_lines) { | |
294 | tp->nr_up = tp->nr_lines - tp->view.rows + 2; | |
295 | tty3270_rebuild_update(tp); | |
296 | tty3270_update_status(tp); | |
297 | } | |
298 | return s; | |
299 | } | |
300 | ||
301 | /* | |
302 | * Add an empty line to the list. | |
303 | */ | |
304 | static void | |
305 | tty3270_blank_line(struct tty3270 *tp) | |
306 | { | |
307 | static const unsigned char blueprint[] = | |
308 | { TO_SBA, 0, 0, TO_SA, TAT_EXTHI, TAX_RESET, | |
309 | TO_SA, TAT_COLOR, TAC_RESET, TO_RA, 0, 0, 0 }; | |
310 | struct string *s; | |
311 | ||
312 | s = tty3270_alloc_string(tp, sizeof(blueprint)); | |
313 | memcpy(s->string, blueprint, sizeof(blueprint)); | |
314 | s->len = sizeof(blueprint); | |
315 | list_add_tail(&s->list, &tp->lines); | |
316 | tp->nr_lines++; | |
317 | if (tp->nr_up != 0) | |
318 | tp->nr_up++; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Write request completion callback. | |
323 | */ | |
324 | static void | |
325 | tty3270_write_callback(struct raw3270_request *rq, void *data) | |
326 | { | |
327 | struct tty3270 *tp; | |
328 | ||
329 | tp = (struct tty3270 *) rq->view; | |
330 | if (rq->rc != 0) { | |
25985edc | 331 | /* Write wasn't successful. Refresh all. */ |
1da177e4 LT |
332 | tp->update_flags = TTY_UPDATE_ALL; |
333 | tty3270_set_timer(tp, 1); | |
334 | } | |
335 | raw3270_request_reset(rq); | |
336 | xchg(&tp->write, rq); | |
337 | } | |
338 | ||
339 | /* | |
340 | * Update 3270 display. | |
341 | */ | |
342 | static void | |
343 | tty3270_update(struct tty3270 *tp) | |
344 | { | |
345 | static char invalid_sba[2] = { 0xff, 0xff }; | |
346 | struct raw3270_request *wrq; | |
347 | unsigned long updated; | |
348 | struct string *s, *n; | |
349 | char *sba, *str; | |
350 | int rc, len; | |
351 | ||
352 | wrq = xchg(&tp->write, 0); | |
353 | if (!wrq) { | |
354 | tty3270_set_timer(tp, 1); | |
355 | return; | |
356 | } | |
357 | ||
358 | spin_lock(&tp->view.lock); | |
359 | updated = 0; | |
205d7ab9 MS |
360 | if (tp->update_flags & TTY_UPDATE_ALL) { |
361 | tty3270_rebuild_update(tp); | |
362 | tty3270_update_status(tp); | |
363 | tp->update_flags = TTY_UPDATE_ERASE | TTY_UPDATE_LIST | | |
364 | TTY_UPDATE_INPUT | TTY_UPDATE_STATUS; | |
365 | } | |
1da177e4 LT |
366 | if (tp->update_flags & TTY_UPDATE_ERASE) { |
367 | /* Use erase write alternate to erase display. */ | |
368 | raw3270_request_set_cmd(wrq, TC_EWRITEA); | |
369 | updated |= TTY_UPDATE_ERASE; | |
370 | } else | |
371 | raw3270_request_set_cmd(wrq, TC_WRITE); | |
372 | ||
373 | raw3270_request_add_data(wrq, &tp->wcc, 1); | |
374 | tp->wcc = TW_NONE; | |
375 | ||
376 | /* | |
377 | * Update status line. | |
378 | */ | |
379 | if (tp->update_flags & TTY_UPDATE_STATUS) | |
380 | if (raw3270_request_add_data(wrq, tp->status->string, | |
381 | tp->status->len) == 0) | |
382 | updated |= TTY_UPDATE_STATUS; | |
383 | ||
384 | /* | |
385 | * Write input line. | |
386 | */ | |
387 | if (tp->update_flags & TTY_UPDATE_INPUT) | |
388 | if (raw3270_request_add_data(wrq, tp->prompt->string, | |
389 | tp->prompt->len) == 0) | |
390 | updated |= TTY_UPDATE_INPUT; | |
391 | ||
392 | sba = invalid_sba; | |
393 | ||
394 | if (tp->update_flags & TTY_UPDATE_LIST) { | |
395 | /* Write strings in the update list to the screen. */ | |
396 | list_for_each_entry_safe(s, n, &tp->update, update) { | |
397 | str = s->string; | |
398 | len = s->len; | |
399 | /* | |
400 | * Skip TO_SBA at the start of the string if the | |
401 | * last output position matches the start address | |
402 | * of this line. | |
403 | */ | |
404 | if (s->string[1] == sba[0] && s->string[2] == sba[1]) | |
405 | str += 3, len -= 3; | |
406 | if (raw3270_request_add_data(wrq, str, len) != 0) | |
407 | break; | |
408 | list_del_init(&s->update); | |
409 | sba = s->string + s->len - 3; | |
410 | } | |
411 | if (list_empty(&tp->update)) | |
412 | updated |= TTY_UPDATE_LIST; | |
413 | } | |
414 | wrq->callback = tty3270_write_callback; | |
415 | rc = raw3270_start(&tp->view, wrq); | |
416 | if (rc == 0) { | |
417 | tp->update_flags &= ~updated; | |
418 | if (tp->update_flags) | |
419 | tty3270_set_timer(tp, 1); | |
420 | } else { | |
421 | raw3270_request_reset(wrq); | |
422 | xchg(&tp->write, wrq); | |
423 | } | |
424 | spin_unlock(&tp->view.lock); | |
1da177e4 LT |
425 | } |
426 | ||
427 | /* | |
428 | * Command recalling. | |
429 | */ | |
430 | static void | |
431 | tty3270_rcl_add(struct tty3270 *tp, char *input, int len) | |
432 | { | |
433 | struct string *s; | |
434 | ||
d2c993d8 | 435 | tp->rcl_walk = NULL; |
1da177e4 LT |
436 | if (len <= 0) |
437 | return; | |
438 | if (tp->rcl_nr >= tp->rcl_max) { | |
439 | s = list_entry(tp->rcl_lines.next, struct string, list); | |
440 | list_del(&s->list); | |
441 | free_string(&tp->freemem, s); | |
442 | tp->rcl_nr--; | |
443 | } | |
444 | s = tty3270_alloc_string(tp, len); | |
445 | memcpy(s->string, input, len); | |
446 | list_add_tail(&s->list, &tp->rcl_lines); | |
447 | tp->rcl_nr++; | |
448 | } | |
449 | ||
450 | static void | |
451 | tty3270_rcl_backward(struct kbd_data *kbd) | |
452 | { | |
453 | struct tty3270 *tp; | |
454 | struct string *s; | |
455 | ||
456 | tp = kbd->tty->driver_data; | |
457 | spin_lock_bh(&tp->view.lock); | |
458 | if (tp->inattr == TF_INPUT) { | |
459 | if (tp->rcl_walk && tp->rcl_walk->prev != &tp->rcl_lines) | |
460 | tp->rcl_walk = tp->rcl_walk->prev; | |
461 | else if (!list_empty(&tp->rcl_lines)) | |
462 | tp->rcl_walk = tp->rcl_lines.prev; | |
463 | s = tp->rcl_walk ? | |
d2c993d8 | 464 | list_entry(tp->rcl_walk, struct string, list) : NULL; |
1da177e4 LT |
465 | if (tp->rcl_walk) { |
466 | s = list_entry(tp->rcl_walk, struct string, list); | |
467 | tty3270_update_prompt(tp, s->string, s->len); | |
468 | } else | |
d2c993d8 | 469 | tty3270_update_prompt(tp, NULL, 0); |
1da177e4 LT |
470 | tty3270_set_timer(tp, 1); |
471 | } | |
472 | spin_unlock_bh(&tp->view.lock); | |
473 | } | |
474 | ||
475 | /* | |
476 | * Deactivate tty view. | |
477 | */ | |
478 | static void | |
479 | tty3270_exit_tty(struct kbd_data *kbd) | |
480 | { | |
481 | struct tty3270 *tp; | |
482 | ||
483 | tp = kbd->tty->driver_data; | |
484 | raw3270_deactivate_view(&tp->view); | |
485 | } | |
486 | ||
487 | /* | |
488 | * Scroll forward in history. | |
489 | */ | |
490 | static void | |
491 | tty3270_scroll_forward(struct kbd_data *kbd) | |
492 | { | |
493 | struct tty3270 *tp; | |
494 | int nr_up; | |
495 | ||
496 | tp = kbd->tty->driver_data; | |
497 | spin_lock_bh(&tp->view.lock); | |
498 | nr_up = tp->nr_up - tp->view.rows + 2; | |
499 | if (nr_up < 0) | |
500 | nr_up = 0; | |
501 | if (nr_up != tp->nr_up) { | |
502 | tp->nr_up = nr_up; | |
503 | tty3270_rebuild_update(tp); | |
504 | tty3270_update_status(tp); | |
505 | tty3270_set_timer(tp, 1); | |
506 | } | |
507 | spin_unlock_bh(&tp->view.lock); | |
508 | } | |
509 | ||
510 | /* | |
511 | * Scroll backward in history. | |
512 | */ | |
513 | static void | |
514 | tty3270_scroll_backward(struct kbd_data *kbd) | |
515 | { | |
516 | struct tty3270 *tp; | |
517 | int nr_up; | |
518 | ||
519 | tp = kbd->tty->driver_data; | |
520 | spin_lock_bh(&tp->view.lock); | |
521 | nr_up = tp->nr_up + tp->view.rows - 2; | |
522 | if (nr_up + tp->view.rows - 2 > tp->nr_lines) | |
523 | nr_up = tp->nr_lines - tp->view.rows + 2; | |
524 | if (nr_up != tp->nr_up) { | |
525 | tp->nr_up = nr_up; | |
526 | tty3270_rebuild_update(tp); | |
527 | tty3270_update_status(tp); | |
528 | tty3270_set_timer(tp, 1); | |
529 | } | |
530 | spin_unlock_bh(&tp->view.lock); | |
531 | } | |
532 | ||
533 | /* | |
534 | * Pass input line to tty. | |
535 | */ | |
536 | static void | |
537 | tty3270_read_tasklet(struct raw3270_request *rrq) | |
538 | { | |
539 | static char kreset_data = TW_KR; | |
540 | struct tty3270 *tp; | |
541 | char *input; | |
542 | int len; | |
543 | ||
544 | tp = (struct tty3270 *) rrq->view; | |
545 | spin_lock_bh(&tp->view.lock); | |
546 | /* | |
547 | * Two AID keys are special: For 0x7d (enter) the input line | |
548 | * has to be emitted to the tty and for 0x6d the screen | |
549 | * needs to be redrawn. | |
550 | */ | |
d2c993d8 | 551 | input = NULL; |
1da177e4 LT |
552 | len = 0; |
553 | if (tp->input->string[0] == 0x7d) { | |
554 | /* Enter: write input to tty. */ | |
555 | input = tp->input->string + 6; | |
556 | len = tp->input->len - 6 - rrq->rescnt; | |
557 | if (tp->inattr != TF_INPUTN) | |
558 | tty3270_rcl_add(tp, input, len); | |
559 | if (tp->nr_up > 0) { | |
560 | tp->nr_up = 0; | |
561 | tty3270_rebuild_update(tp); | |
562 | tty3270_update_status(tp); | |
563 | } | |
564 | /* Clear input area. */ | |
d2c993d8 | 565 | tty3270_update_prompt(tp, NULL, 0); |
1da177e4 LT |
566 | tty3270_set_timer(tp, 1); |
567 | } else if (tp->input->string[0] == 0x6d) { | |
568 | /* Display has been cleared. Redraw. */ | |
1da177e4 LT |
569 | tp->update_flags = TTY_UPDATE_ALL; |
570 | tty3270_set_timer(tp, 1); | |
571 | } | |
572 | spin_unlock_bh(&tp->view.lock); | |
573 | ||
574 | /* Start keyboard reset command. */ | |
575 | raw3270_request_reset(tp->kreset); | |
576 | raw3270_request_set_cmd(tp->kreset, TC_WRITE); | |
577 | raw3270_request_add_data(tp->kreset, &kreset_data, 1); | |
578 | raw3270_start(&tp->view, tp->kreset); | |
579 | ||
580 | /* Emit input string. */ | |
581 | if (tp->tty) { | |
582 | while (len-- > 0) | |
583 | kbd_keycode(tp->kbd, *input++); | |
584 | /* Emit keycode for AID byte. */ | |
585 | kbd_keycode(tp->kbd, 256 + tp->input->string[0]); | |
586 | } | |
587 | ||
588 | raw3270_request_reset(rrq); | |
589 | xchg(&tp->read, rrq); | |
590 | raw3270_put_view(&tp->view); | |
591 | } | |
592 | ||
593 | /* | |
594 | * Read request completion callback. | |
595 | */ | |
596 | static void | |
597 | tty3270_read_callback(struct raw3270_request *rq, void *data) | |
598 | { | |
599 | raw3270_get_view(rq->view); | |
600 | /* Schedule tasklet to pass input to tty. */ | |
601 | tasklet_schedule(&((struct tty3270 *) rq->view)->readlet); | |
602 | } | |
603 | ||
604 | /* | |
605 | * Issue a read request. Call with device lock. | |
606 | */ | |
607 | static void | |
608 | tty3270_issue_read(struct tty3270 *tp, int lock) | |
609 | { | |
610 | struct raw3270_request *rrq; | |
611 | int rc; | |
612 | ||
613 | rrq = xchg(&tp->read, 0); | |
614 | if (!rrq) | |
615 | /* Read already scheduled. */ | |
616 | return; | |
617 | rrq->callback = tty3270_read_callback; | |
618 | rrq->callback_data = tp; | |
619 | raw3270_request_set_cmd(rrq, TC_READMOD); | |
620 | raw3270_request_set_data(rrq, tp->input->string, tp->input->len); | |
621 | /* Issue the read modified request. */ | |
622 | if (lock) { | |
623 | rc = raw3270_start(&tp->view, rrq); | |
624 | } else | |
625 | rc = raw3270_start_irq(&tp->view, rrq); | |
626 | if (rc) { | |
627 | raw3270_request_reset(rrq); | |
628 | xchg(&tp->read, rrq); | |
629 | } | |
630 | } | |
631 | ||
632 | /* | |
633 | * Switch to the tty view. | |
634 | */ | |
635 | static int | |
636 | tty3270_activate(struct raw3270_view *view) | |
637 | { | |
638 | struct tty3270 *tp; | |
1da177e4 LT |
639 | |
640 | tp = (struct tty3270 *) view; | |
1da177e4 LT |
641 | tp->update_flags = TTY_UPDATE_ALL; |
642 | tty3270_set_timer(tp, 1); | |
1da177e4 LT |
643 | return 0; |
644 | } | |
645 | ||
646 | static void | |
647 | tty3270_deactivate(struct raw3270_view *view) | |
648 | { | |
205d7ab9 MS |
649 | struct tty3270 *tp; |
650 | ||
651 | tp = (struct tty3270 *) view; | |
652 | del_timer(&tp->timer); | |
1da177e4 LT |
653 | } |
654 | ||
655 | static int | |
656 | tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb) | |
657 | { | |
658 | /* Handle ATTN. Schedule tasklet to read aid. */ | |
23d805b6 | 659 | if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
1da177e4 LT |
660 | if (!tp->throttle) |
661 | tty3270_issue_read(tp, 0); | |
662 | else | |
663 | tp->attn = 1; | |
664 | } | |
665 | ||
666 | if (rq) { | |
23d805b6 | 667 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
1da177e4 LT |
668 | rq->rc = -EIO; |
669 | else | |
670 | /* Normal end. Copy residual count. */ | |
23d805b6 | 671 | rq->rescnt = irb->scsw.cmd.count; |
1da177e4 LT |
672 | } |
673 | return RAW3270_IO_DONE; | |
674 | } | |
675 | ||
676 | /* | |
677 | * Allocate tty3270 structure. | |
678 | */ | |
679 | static struct tty3270 * | |
680 | tty3270_alloc_view(void) | |
681 | { | |
682 | struct tty3270 *tp; | |
683 | int pages; | |
684 | ||
88abaab4 | 685 | tp = kzalloc(sizeof(struct tty3270), GFP_KERNEL); |
1da177e4 LT |
686 | if (!tp) |
687 | goto out_err; | |
1da177e4 LT |
688 | tp->freemem_pages = |
689 | kmalloc(sizeof(void *) * TTY3270_STRING_PAGES, GFP_KERNEL); | |
690 | if (!tp->freemem_pages) | |
691 | goto out_tp; | |
692 | INIT_LIST_HEAD(&tp->freemem); | |
9d2ae233 JS |
693 | INIT_LIST_HEAD(&tp->lines); |
694 | INIT_LIST_HEAD(&tp->update); | |
695 | INIT_LIST_HEAD(&tp->rcl_lines); | |
696 | tp->rcl_max = 20; | |
697 | setup_timer(&tp->timer, (void (*)(unsigned long)) tty3270_update, | |
698 | (unsigned long) tp); | |
699 | tasklet_init(&tp->readlet, | |
700 | (void (*)(unsigned long)) tty3270_read_tasklet, | |
701 | (unsigned long) tp->read); | |
702 | ||
1da177e4 LT |
703 | for (pages = 0; pages < TTY3270_STRING_PAGES; pages++) { |
704 | tp->freemem_pages[pages] = (void *) | |
705 | __get_free_pages(GFP_KERNEL|GFP_DMA, 0); | |
706 | if (!tp->freemem_pages[pages]) | |
707 | goto out_pages; | |
708 | add_string_memory(&tp->freemem, | |
709 | tp->freemem_pages[pages], PAGE_SIZE); | |
710 | } | |
711 | tp->write = raw3270_request_alloc(TTY3270_OUTPUT_BUFFER_SIZE); | |
ed3cb6f0 | 712 | if (IS_ERR(tp->write)) |
1da177e4 LT |
713 | goto out_pages; |
714 | tp->read = raw3270_request_alloc(0); | |
ed3cb6f0 | 715 | if (IS_ERR(tp->read)) |
1da177e4 LT |
716 | goto out_write; |
717 | tp->kreset = raw3270_request_alloc(1); | |
ed3cb6f0 | 718 | if (IS_ERR(tp->kreset)) |
1da177e4 LT |
719 | goto out_read; |
720 | tp->kbd = kbd_alloc(); | |
721 | if (!tp->kbd) | |
722 | goto out_reset; | |
723 | return tp; | |
724 | ||
725 | out_reset: | |
726 | raw3270_request_free(tp->kreset); | |
727 | out_read: | |
728 | raw3270_request_free(tp->read); | |
729 | out_write: | |
730 | raw3270_request_free(tp->write); | |
731 | out_pages: | |
732 | while (pages--) | |
733 | free_pages((unsigned long) tp->freemem_pages[pages], 0); | |
734 | kfree(tp->freemem_pages); | |
735 | out_tp: | |
736 | kfree(tp); | |
737 | out_err: | |
738 | return ERR_PTR(-ENOMEM); | |
739 | } | |
740 | ||
741 | /* | |
742 | * Free tty3270 structure. | |
743 | */ | |
744 | static void | |
745 | tty3270_free_view(struct tty3270 *tp) | |
746 | { | |
747 | int pages; | |
748 | ||
205d7ab9 | 749 | del_timer_sync(&tp->timer); |
1da177e4 LT |
750 | kbd_free(tp->kbd); |
751 | raw3270_request_free(tp->kreset); | |
752 | raw3270_request_free(tp->read); | |
753 | raw3270_request_free(tp->write); | |
754 | for (pages = 0; pages < TTY3270_STRING_PAGES; pages++) | |
755 | free_pages((unsigned long) tp->freemem_pages[pages], 0); | |
756 | kfree(tp->freemem_pages); | |
757 | kfree(tp); | |
758 | } | |
759 | ||
760 | /* | |
761 | * Allocate tty3270 screen. | |
762 | */ | |
763 | static int | |
764 | tty3270_alloc_screen(struct tty3270 *tp) | |
765 | { | |
766 | unsigned long size; | |
767 | int lines; | |
768 | ||
769 | size = sizeof(struct tty3270_line) * (tp->view.rows - 2); | |
88abaab4 | 770 | tp->screen = kzalloc(size, GFP_KERNEL); |
1da177e4 LT |
771 | if (!tp->screen) |
772 | goto out_err; | |
1da177e4 LT |
773 | for (lines = 0; lines < tp->view.rows - 2; lines++) { |
774 | size = sizeof(struct tty3270_cell) * tp->view.cols; | |
88abaab4 | 775 | tp->screen[lines].cells = kzalloc(size, GFP_KERNEL); |
1da177e4 LT |
776 | if (!tp->screen[lines].cells) |
777 | goto out_screen; | |
1da177e4 LT |
778 | } |
779 | return 0; | |
780 | out_screen: | |
781 | while (lines--) | |
782 | kfree(tp->screen[lines].cells); | |
783 | kfree(tp->screen); | |
784 | out_err: | |
785 | return -ENOMEM; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Free tty3270 screen. | |
790 | */ | |
791 | static void | |
792 | tty3270_free_screen(struct tty3270 *tp) | |
793 | { | |
794 | int lines; | |
795 | ||
796 | for (lines = 0; lines < tp->view.rows - 2; lines++) | |
797 | kfree(tp->screen[lines].cells); | |
798 | kfree(tp->screen); | |
799 | } | |
800 | ||
801 | /* | |
802 | * Unlink tty3270 data structure from tty. | |
803 | */ | |
804 | static void | |
805 | tty3270_release(struct raw3270_view *view) | |
806 | { | |
807 | struct tty3270 *tp; | |
808 | struct tty_struct *tty; | |
809 | ||
810 | tp = (struct tty3270 *) view; | |
811 | tty = tp->tty; | |
812 | if (tty) { | |
d2c993d8 HC |
813 | tty->driver_data = NULL; |
814 | tp->tty = tp->kbd->tty = NULL; | |
1da177e4 LT |
815 | tty_hangup(tty); |
816 | raw3270_put_view(&tp->view); | |
817 | } | |
818 | } | |
819 | ||
820 | /* | |
821 | * Free tty3270 data structure | |
822 | */ | |
823 | static void | |
824 | tty3270_free(struct raw3270_view *view) | |
825 | { | |
826 | tty3270_free_screen((struct tty3270 *) view); | |
827 | tty3270_free_view((struct tty3270 *) view); | |
828 | } | |
829 | ||
830 | /* | |
831 | * Delayed freeing of tty3270 views. | |
832 | */ | |
833 | static void | |
834 | tty3270_del_views(void) | |
835 | { | |
836 | struct tty3270 *tp; | |
837 | int i; | |
838 | ||
839 | for (i = 0; i < tty3270_max_index; i++) { | |
ed3cb6f0 RH |
840 | tp = (struct tty3270 *) |
841 | raw3270_find_view(&tty3270_fn, i + RAW3270_FIRSTMINOR); | |
1da177e4 LT |
842 | if (!IS_ERR(tp)) |
843 | raw3270_del_view(&tp->view); | |
844 | } | |
845 | } | |
846 | ||
2b67fc46 | 847 | static struct raw3270_fn tty3270_fn = { |
1da177e4 LT |
848 | .activate = tty3270_activate, |
849 | .deactivate = tty3270_deactivate, | |
850 | .intv = (void *) tty3270_irq, | |
851 | .release = tty3270_release, | |
852 | .free = tty3270_free | |
853 | }; | |
854 | ||
855 | /* | |
856 | * This routine is called whenever a 3270 tty is opened. | |
857 | */ | |
858 | static int | |
859 | tty3270_open(struct tty_struct *tty, struct file * filp) | |
860 | { | |
861 | struct tty3270 *tp; | |
862 | int i, rc; | |
863 | ||
864 | if (tty->count > 1) | |
865 | return 0; | |
866 | /* Check if the tty3270 is already there. */ | |
ed3cb6f0 RH |
867 | tp = (struct tty3270 *) |
868 | raw3270_find_view(&tty3270_fn, | |
869 | tty->index + RAW3270_FIRSTMINOR); | |
1da177e4 LT |
870 | if (!IS_ERR(tp)) { |
871 | tty->driver_data = tp; | |
872 | tty->winsize.ws_row = tp->view.rows - 2; | |
873 | tty->winsize.ws_col = tp->view.cols; | |
874 | tty->low_latency = 0; | |
875 | tp->tty = tty; | |
876 | tp->kbd->tty = tty; | |
877 | tp->inattr = TF_INPUT; | |
878 | return 0; | |
879 | } | |
880 | if (tty3270_max_index < tty->index + 1) | |
881 | tty3270_max_index = tty->index + 1; | |
882 | ||
883 | /* Quick exit if there is no device for tty->index. */ | |
884 | if (PTR_ERR(tp) == -ENODEV) | |
885 | return -ENODEV; | |
886 | ||
887 | /* Allocate tty3270 structure on first open. */ | |
888 | tp = tty3270_alloc_view(); | |
889 | if (IS_ERR(tp)) | |
890 | return PTR_ERR(tp); | |
891 | ||
ed3cb6f0 RH |
892 | rc = raw3270_add_view(&tp->view, &tty3270_fn, |
893 | tty->index + RAW3270_FIRSTMINOR); | |
1da177e4 LT |
894 | if (rc) { |
895 | tty3270_free_view(tp); | |
896 | return rc; | |
897 | } | |
898 | ||
899 | rc = tty3270_alloc_screen(tp); | |
900 | if (rc) { | |
1da177e4 | 901 | raw3270_put_view(&tp->view); |
ed3cb6f0 | 902 | raw3270_del_view(&tp->view); |
1da177e4 LT |
903 | return rc; |
904 | } | |
905 | ||
906 | tp->tty = tty; | |
907 | tty->low_latency = 0; | |
908 | tty->driver_data = tp; | |
909 | tty->winsize.ws_row = tp->view.rows - 2; | |
910 | tty->winsize.ws_col = tp->view.cols; | |
911 | ||
912 | tty3270_create_prompt(tp); | |
913 | tty3270_create_status(tp); | |
914 | tty3270_update_status(tp); | |
915 | ||
916 | /* Create blank line for every line in the tty output area. */ | |
917 | for (i = 0; i < tp->view.rows - 2; i++) | |
918 | tty3270_blank_line(tp); | |
919 | ||
920 | tp->kbd->tty = tty; | |
921 | tp->kbd->fn_handler[KVAL(K_INCRCONSOLE)] = tty3270_exit_tty; | |
922 | tp->kbd->fn_handler[KVAL(K_SCROLLBACK)] = tty3270_scroll_backward; | |
923 | tp->kbd->fn_handler[KVAL(K_SCROLLFORW)] = tty3270_scroll_forward; | |
924 | tp->kbd->fn_handler[KVAL(K_CONS)] = tty3270_rcl_backward; | |
925 | kbd_ascebc(tp->kbd, tp->view.ascebc); | |
926 | ||
927 | raw3270_activate_view(&tp->view); | |
928 | return 0; | |
929 | } | |
930 | ||
931 | /* | |
932 | * This routine is called when the 3270 tty is closed. We wait | |
933 | * for the remaining request to be completed. Then we clean up. | |
934 | */ | |
935 | static void | |
936 | tty3270_close(struct tty_struct *tty, struct file * filp) | |
937 | { | |
938 | struct tty3270 *tp; | |
939 | ||
940 | if (tty->count > 1) | |
941 | return; | |
942 | tp = (struct tty3270 *) tty->driver_data; | |
943 | if (tp) { | |
d2c993d8 HC |
944 | tty->driver_data = NULL; |
945 | tp->tty = tp->kbd->tty = NULL; | |
1da177e4 LT |
946 | raw3270_put_view(&tp->view); |
947 | } | |
948 | } | |
949 | ||
950 | /* | |
951 | * We always have room. | |
952 | */ | |
953 | static int | |
954 | tty3270_write_room(struct tty_struct *tty) | |
955 | { | |
956 | return INT_MAX; | |
957 | } | |
958 | ||
959 | /* | |
960 | * Insert character into the screen at the current position with the | |
961 | * current color and highlight. This function does NOT do cursor movement. | |
962 | */ | |
74c76c84 | 963 | static void tty3270_put_character(struct tty3270 *tp, char ch) |
1da177e4 LT |
964 | { |
965 | struct tty3270_line *line; | |
966 | struct tty3270_cell *cell; | |
967 | ||
968 | line = tp->screen + tp->cy; | |
969 | if (line->len <= tp->cx) { | |
970 | while (line->len < tp->cx) { | |
971 | cell = line->cells + line->len; | |
972 | cell->character = tp->view.ascebc[' ']; | |
973 | cell->highlight = tp->highlight; | |
974 | cell->f_color = tp->f_color; | |
975 | line->len++; | |
976 | } | |
977 | line->len++; | |
978 | } | |
979 | cell = line->cells + tp->cx; | |
980 | cell->character = tp->view.ascebc[(unsigned int) ch]; | |
981 | cell->highlight = tp->highlight; | |
982 | cell->f_color = tp->f_color; | |
983 | } | |
984 | ||
985 | /* | |
986 | * Convert a tty3270_line to a 3270 data fragment usable for output. | |
987 | */ | |
988 | static void | |
989 | tty3270_convert_line(struct tty3270 *tp, int line_nr) | |
990 | { | |
991 | struct tty3270_line *line; | |
992 | struct tty3270_cell *cell; | |
993 | struct string *s, *n; | |
994 | unsigned char highlight; | |
995 | unsigned char f_color; | |
996 | char *cp; | |
997 | int flen, i; | |
998 | ||
999 | /* Determine how long the fragment will be. */ | |
1000 | flen = 3; /* Prefix (TO_SBA). */ | |
1001 | line = tp->screen + line_nr; | |
1002 | flen += line->len; | |
1003 | highlight = TAX_RESET; | |
1004 | f_color = TAC_RESET; | |
1005 | for (i = 0, cell = line->cells; i < line->len; i++, cell++) { | |
1006 | if (cell->highlight != highlight) { | |
1007 | flen += 3; /* TO_SA to switch highlight. */ | |
1008 | highlight = cell->highlight; | |
1009 | } | |
1010 | if (cell->f_color != f_color) { | |
1011 | flen += 3; /* TO_SA to switch color. */ | |
1012 | f_color = cell->f_color; | |
1013 | } | |
1014 | } | |
1015 | if (highlight != TAX_RESET) | |
1016 | flen += 3; /* TO_SA to reset hightlight. */ | |
1017 | if (f_color != TAC_RESET) | |
1018 | flen += 3; /* TO_SA to reset color. */ | |
1019 | if (line->len < tp->view.cols) | |
1020 | flen += 4; /* Postfix (TO_RA). */ | |
1021 | ||
1022 | /* Find the line in the list. */ | |
1023 | i = tp->view.rows - 2 - line_nr; | |
1024 | list_for_each_entry_reverse(s, &tp->lines, list) | |
1025 | if (--i <= 0) | |
1026 | break; | |
1027 | /* | |
1028 | * Check if the line needs to get reallocated. | |
1029 | */ | |
1030 | if (s->len != flen) { | |
1031 | /* Reallocate string. */ | |
1032 | n = tty3270_alloc_string(tp, flen); | |
1033 | list_add(&n->list, &s->list); | |
1034 | list_del_init(&s->list); | |
1035 | if (!list_empty(&s->update)) | |
1036 | list_del_init(&s->update); | |
1037 | free_string(&tp->freemem, s); | |
1038 | s = n; | |
1039 | } | |
1040 | ||
1041 | /* Write 3270 data fragment. */ | |
1042 | cp = s->string; | |
1043 | *cp++ = TO_SBA; | |
1044 | *cp++ = 0; | |
1045 | *cp++ = 0; | |
1046 | ||
1047 | highlight = TAX_RESET; | |
1048 | f_color = TAC_RESET; | |
1049 | for (i = 0, cell = line->cells; i < line->len; i++, cell++) { | |
1050 | if (cell->highlight != highlight) { | |
1051 | *cp++ = TO_SA; | |
1052 | *cp++ = TAT_EXTHI; | |
1053 | *cp++ = cell->highlight; | |
1054 | highlight = cell->highlight; | |
1055 | } | |
1056 | if (cell->f_color != f_color) { | |
1057 | *cp++ = TO_SA; | |
1058 | *cp++ = TAT_COLOR; | |
1059 | *cp++ = cell->f_color; | |
1060 | f_color = cell->f_color; | |
1061 | } | |
1062 | *cp++ = cell->character; | |
1063 | } | |
1064 | if (highlight != TAX_RESET) { | |
1065 | *cp++ = TO_SA; | |
1066 | *cp++ = TAT_EXTHI; | |
1067 | *cp++ = TAX_RESET; | |
1068 | } | |
1069 | if (f_color != TAC_RESET) { | |
1070 | *cp++ = TO_SA; | |
1071 | *cp++ = TAT_COLOR; | |
1072 | *cp++ = TAC_RESET; | |
1073 | } | |
1074 | if (line->len < tp->view.cols) { | |
1075 | *cp++ = TO_RA; | |
1076 | *cp++ = 0; | |
1077 | *cp++ = 0; | |
1078 | *cp++ = 0; | |
1079 | } | |
1080 | ||
1081 | if (tp->nr_up + line_nr < tp->view.rows - 2) { | |
1082 | /* Line is currently visible on screen. */ | |
1083 | tty3270_update_string(tp, s, line_nr); | |
1084 | /* Add line to update list. */ | |
1085 | if (list_empty(&s->update)) { | |
1086 | list_add_tail(&s->update, &tp->update); | |
1087 | tp->update_flags |= TTY_UPDATE_LIST; | |
1088 | } | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * Do carriage return. | |
1094 | */ | |
1095 | static void | |
1096 | tty3270_cr(struct tty3270 *tp) | |
1097 | { | |
1098 | tp->cx = 0; | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | * Do line feed. | |
1103 | */ | |
1104 | static void | |
1105 | tty3270_lf(struct tty3270 *tp) | |
1106 | { | |
1107 | struct tty3270_line temp; | |
1108 | int i; | |
1109 | ||
1110 | tty3270_convert_line(tp, tp->cy); | |
1111 | if (tp->cy < tp->view.rows - 3) { | |
1112 | tp->cy++; | |
1113 | return; | |
1114 | } | |
1115 | /* Last line just filled up. Add new, blank line. */ | |
1116 | tty3270_blank_line(tp); | |
1117 | temp = tp->screen[0]; | |
1118 | temp.len = 0; | |
1119 | for (i = 0; i < tp->view.rows - 3; i++) | |
1120 | tp->screen[i] = tp->screen[i+1]; | |
1121 | tp->screen[tp->view.rows - 3] = temp; | |
1122 | tty3270_rebuild_update(tp); | |
1123 | } | |
1124 | ||
1125 | static void | |
1126 | tty3270_ri(struct tty3270 *tp) | |
1127 | { | |
1128 | if (tp->cy > 0) { | |
1129 | tty3270_convert_line(tp, tp->cy); | |
1130 | tp->cy--; | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* | |
1135 | * Insert characters at current position. | |
1136 | */ | |
1137 | static void | |
1138 | tty3270_insert_characters(struct tty3270 *tp, int n) | |
1139 | { | |
1140 | struct tty3270_line *line; | |
1141 | int k; | |
1142 | ||
1143 | line = tp->screen + tp->cy; | |
1144 | while (line->len < tp->cx) { | |
1145 | line->cells[line->len].character = tp->view.ascebc[' ']; | |
1146 | line->cells[line->len].highlight = TAX_RESET; | |
1147 | line->cells[line->len].f_color = TAC_RESET; | |
1148 | line->len++; | |
1149 | } | |
1150 | if (n > tp->view.cols - tp->cx) | |
1151 | n = tp->view.cols - tp->cx; | |
1152 | k = min_t(int, line->len - tp->cx, tp->view.cols - tp->cx - n); | |
1153 | while (k--) | |
1154 | line->cells[tp->cx + n + k] = line->cells[tp->cx + k]; | |
1155 | line->len += n; | |
1156 | if (line->len > tp->view.cols) | |
1157 | line->len = tp->view.cols; | |
1158 | while (n-- > 0) { | |
1159 | line->cells[tp->cx + n].character = tp->view.ascebc[' ']; | |
1160 | line->cells[tp->cx + n].highlight = tp->highlight; | |
1161 | line->cells[tp->cx + n].f_color = tp->f_color; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | /* | |
1166 | * Delete characters at current position. | |
1167 | */ | |
1168 | static void | |
1169 | tty3270_delete_characters(struct tty3270 *tp, int n) | |
1170 | { | |
1171 | struct tty3270_line *line; | |
1172 | int i; | |
1173 | ||
1174 | line = tp->screen + tp->cy; | |
1175 | if (line->len <= tp->cx) | |
1176 | return; | |
1177 | if (line->len - tp->cx <= n) { | |
1178 | line->len = tp->cx; | |
1179 | return; | |
1180 | } | |
1181 | for (i = tp->cx; i + n < line->len; i++) | |
1182 | line->cells[i] = line->cells[i + n]; | |
1183 | line->len -= n; | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * Erase characters at current position. | |
1188 | */ | |
1189 | static void | |
1190 | tty3270_erase_characters(struct tty3270 *tp, int n) | |
1191 | { | |
1192 | struct tty3270_line *line; | |
1193 | struct tty3270_cell *cell; | |
1194 | ||
1195 | line = tp->screen + tp->cy; | |
1196 | while (line->len > tp->cx && n-- > 0) { | |
1197 | cell = line->cells + tp->cx++; | |
1198 | cell->character = ' '; | |
1199 | cell->highlight = TAX_RESET; | |
1200 | cell->f_color = TAC_RESET; | |
1201 | } | |
1202 | tp->cx += n; | |
1203 | tp->cx = min_t(int, tp->cx, tp->view.cols - 1); | |
1204 | } | |
1205 | ||
1206 | /* | |
1207 | * Erase line, 3 different cases: | |
1208 | * Esc [ 0 K Erase from current position to end of line inclusive | |
1209 | * Esc [ 1 K Erase from beginning of line to current position inclusive | |
1210 | * Esc [ 2 K Erase entire line (without moving cursor) | |
1211 | */ | |
1212 | static void | |
1213 | tty3270_erase_line(struct tty3270 *tp, int mode) | |
1214 | { | |
1215 | struct tty3270_line *line; | |
1216 | struct tty3270_cell *cell; | |
1217 | int i; | |
1218 | ||
1219 | line = tp->screen + tp->cy; | |
1220 | if (mode == 0) | |
1221 | line->len = tp->cx; | |
1222 | else if (mode == 1) { | |
1223 | for (i = 0; i < tp->cx; i++) { | |
1224 | cell = line->cells + i; | |
1225 | cell->character = ' '; | |
1226 | cell->highlight = TAX_RESET; | |
1227 | cell->f_color = TAC_RESET; | |
1228 | } | |
1229 | if (line->len <= tp->cx) | |
1230 | line->len = tp->cx + 1; | |
1231 | } else if (mode == 2) | |
1232 | line->len = 0; | |
1233 | tty3270_convert_line(tp, tp->cy); | |
1234 | } | |
1235 | ||
1236 | /* | |
1237 | * Erase display, 3 different cases: | |
1238 | * Esc [ 0 J Erase from current position to bottom of screen inclusive | |
1239 | * Esc [ 1 J Erase from top of screen to current position inclusive | |
1240 | * Esc [ 2 J Erase entire screen (without moving the cursor) | |
1241 | */ | |
1242 | static void | |
1243 | tty3270_erase_display(struct tty3270 *tp, int mode) | |
1244 | { | |
1245 | int i; | |
1246 | ||
1247 | if (mode == 0) { | |
1248 | tty3270_erase_line(tp, 0); | |
1249 | for (i = tp->cy + 1; i < tp->view.rows - 2; i++) { | |
1250 | tp->screen[i].len = 0; | |
1251 | tty3270_convert_line(tp, i); | |
1252 | } | |
1253 | } else if (mode == 1) { | |
1254 | for (i = 0; i < tp->cy; i++) { | |
1255 | tp->screen[i].len = 0; | |
1256 | tty3270_convert_line(tp, i); | |
1257 | } | |
1258 | tty3270_erase_line(tp, 1); | |
1259 | } else if (mode == 2) { | |
1260 | for (i = 0; i < tp->view.rows - 2; i++) { | |
1261 | tp->screen[i].len = 0; | |
1262 | tty3270_convert_line(tp, i); | |
1263 | } | |
1264 | } | |
1265 | tty3270_rebuild_update(tp); | |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * Set attributes found in an escape sequence. | |
1270 | * Esc [ <attr> ; <attr> ; ... m | |
1271 | */ | |
1272 | static void | |
1273 | tty3270_set_attributes(struct tty3270 *tp) | |
1274 | { | |
1275 | static unsigned char f_colors[] = { | |
1276 | TAC_DEFAULT, TAC_RED, TAC_GREEN, TAC_YELLOW, TAC_BLUE, | |
1277 | TAC_PINK, TAC_TURQ, TAC_WHITE, 0, TAC_DEFAULT | |
1278 | }; | |
1279 | int i, attr; | |
1280 | ||
1281 | for (i = 0; i <= tp->esc_npar; i++) { | |
1282 | attr = tp->esc_par[i]; | |
1283 | switch (attr) { | |
1284 | case 0: /* Reset */ | |
1285 | tp->highlight = TAX_RESET; | |
1286 | tp->f_color = TAC_RESET; | |
1287 | break; | |
1288 | /* Highlight. */ | |
1289 | case 4: /* Start underlining. */ | |
1290 | tp->highlight = TAX_UNDER; | |
1291 | break; | |
1292 | case 5: /* Start blink. */ | |
1293 | tp->highlight = TAX_BLINK; | |
1294 | break; | |
1295 | case 7: /* Start reverse. */ | |
1296 | tp->highlight = TAX_REVER; | |
1297 | break; | |
1298 | case 24: /* End underlining */ | |
1299 | if (tp->highlight == TAX_UNDER) | |
1300 | tp->highlight = TAX_RESET; | |
1301 | break; | |
1302 | case 25: /* End blink. */ | |
1303 | if (tp->highlight == TAX_BLINK) | |
1304 | tp->highlight = TAX_RESET; | |
1305 | break; | |
1306 | case 27: /* End reverse. */ | |
1307 | if (tp->highlight == TAX_REVER) | |
1308 | tp->highlight = TAX_RESET; | |
1309 | break; | |
1310 | /* Foreground color. */ | |
1311 | case 30: /* Black */ | |
1312 | case 31: /* Red */ | |
1313 | case 32: /* Green */ | |
1314 | case 33: /* Yellow */ | |
1315 | case 34: /* Blue */ | |
1316 | case 35: /* Magenta */ | |
1317 | case 36: /* Cyan */ | |
1318 | case 37: /* White */ | |
1319 | case 39: /* Black */ | |
1320 | tp->f_color = f_colors[attr - 30]; | |
1321 | break; | |
1322 | } | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | static inline int | |
1327 | tty3270_getpar(struct tty3270 *tp, int ix) | |
1328 | { | |
1329 | return (tp->esc_par[ix] > 0) ? tp->esc_par[ix] : 1; | |
1330 | } | |
1331 | ||
1332 | static void | |
1333 | tty3270_goto_xy(struct tty3270 *tp, int cx, int cy) | |
1334 | { | |
364c8558 HC |
1335 | int max_cx = max(0, cx); |
1336 | int max_cy = max(0, cy); | |
1337 | ||
1338 | tp->cx = min_t(int, tp->view.cols - 1, max_cx); | |
1339 | cy = min_t(int, tp->view.rows - 3, max_cy); | |
1da177e4 LT |
1340 | if (cy != tp->cy) { |
1341 | tty3270_convert_line(tp, tp->cy); | |
1342 | tp->cy = cy; | |
1343 | } | |
1344 | } | |
1345 | ||
1346 | /* | |
1347 | * Process escape sequences. Known sequences: | |
1348 | * Esc 7 Save Cursor Position | |
1349 | * Esc 8 Restore Cursor Position | |
1350 | * Esc [ Pn ; Pn ; .. m Set attributes | |
1351 | * Esc [ Pn ; Pn H Cursor Position | |
1352 | * Esc [ Pn ; Pn f Cursor Position | |
1353 | * Esc [ Pn A Cursor Up | |
1354 | * Esc [ Pn B Cursor Down | |
1355 | * Esc [ Pn C Cursor Forward | |
1356 | * Esc [ Pn D Cursor Backward | |
1357 | * Esc [ Pn G Cursor Horizontal Absolute | |
1358 | * Esc [ Pn X Erase Characters | |
1359 | * Esc [ Ps J Erase in Display | |
1360 | * Esc [ Ps K Erase in Line | |
1361 | * // FIXME: add all the new ones. | |
1362 | * | |
1363 | * Pn is a numeric parameter, a string of zero or more decimal digits. | |
1364 | * Ps is a selective parameter. | |
1365 | */ | |
1366 | static void | |
1367 | tty3270_escape_sequence(struct tty3270 *tp, char ch) | |
1368 | { | |
1369 | enum { ESnormal, ESesc, ESsquare, ESgetpars }; | |
1370 | ||
1371 | if (tp->esc_state == ESnormal) { | |
1372 | if (ch == 0x1b) | |
1373 | /* Starting new escape sequence. */ | |
1374 | tp->esc_state = ESesc; | |
1375 | return; | |
1376 | } | |
1377 | if (tp->esc_state == ESesc) { | |
1378 | tp->esc_state = ESnormal; | |
1379 | switch (ch) { | |
1380 | case '[': | |
1381 | tp->esc_state = ESsquare; | |
1382 | break; | |
1383 | case 'E': | |
1384 | tty3270_cr(tp); | |
1385 | tty3270_lf(tp); | |
1386 | break; | |
1387 | case 'M': | |
1388 | tty3270_ri(tp); | |
1389 | break; | |
1390 | case 'D': | |
1391 | tty3270_lf(tp); | |
1392 | break; | |
1393 | case 'Z': /* Respond ID. */ | |
1394 | kbd_puts_queue(tp->tty, "\033[?6c"); | |
1395 | break; | |
1396 | case '7': /* Save cursor position. */ | |
1397 | tp->saved_cx = tp->cx; | |
1398 | tp->saved_cy = tp->cy; | |
1399 | tp->saved_highlight = tp->highlight; | |
1400 | tp->saved_f_color = tp->f_color; | |
1401 | break; | |
1402 | case '8': /* Restore cursor position. */ | |
1403 | tty3270_convert_line(tp, tp->cy); | |
1404 | tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy); | |
1405 | tp->highlight = tp->saved_highlight; | |
1406 | tp->f_color = tp->saved_f_color; | |
1407 | break; | |
1408 | case 'c': /* Reset terminal. */ | |
1409 | tp->cx = tp->saved_cx = 0; | |
1410 | tp->cy = tp->saved_cy = 0; | |
1411 | tp->highlight = tp->saved_highlight = TAX_RESET; | |
1412 | tp->f_color = tp->saved_f_color = TAC_RESET; | |
1413 | tty3270_erase_display(tp, 2); | |
1414 | break; | |
1415 | } | |
1416 | return; | |
1417 | } | |
1418 | if (tp->esc_state == ESsquare) { | |
1419 | tp->esc_state = ESgetpars; | |
1420 | memset(tp->esc_par, 0, sizeof(tp->esc_par)); | |
1421 | tp->esc_npar = 0; | |
1422 | tp->esc_ques = (ch == '?'); | |
1423 | if (tp->esc_ques) | |
1424 | return; | |
1425 | } | |
1426 | if (tp->esc_state == ESgetpars) { | |
1427 | if (ch == ';' && tp->esc_npar < ESCAPE_NPAR - 1) { | |
1428 | tp->esc_npar++; | |
1429 | return; | |
1430 | } | |
1431 | if (ch >= '0' && ch <= '9') { | |
1432 | tp->esc_par[tp->esc_npar] *= 10; | |
1433 | tp->esc_par[tp->esc_npar] += ch - '0'; | |
1434 | return; | |
1435 | } | |
1436 | } | |
1437 | tp->esc_state = ESnormal; | |
1438 | if (ch == 'n' && !tp->esc_ques) { | |
1439 | if (tp->esc_par[0] == 5) /* Status report. */ | |
1440 | kbd_puts_queue(tp->tty, "\033[0n"); | |
1441 | else if (tp->esc_par[0] == 6) { /* Cursor report. */ | |
1442 | char buf[40]; | |
1443 | sprintf(buf, "\033[%d;%dR", tp->cy + 1, tp->cx + 1); | |
1444 | kbd_puts_queue(tp->tty, buf); | |
1445 | } | |
1446 | return; | |
1447 | } | |
1448 | if (tp->esc_ques) | |
1449 | return; | |
1450 | switch (ch) { | |
1451 | case 'm': | |
1452 | tty3270_set_attributes(tp); | |
1453 | break; | |
1454 | case 'H': /* Set cursor position. */ | |
1455 | case 'f': | |
1456 | tty3270_goto_xy(tp, tty3270_getpar(tp, 1) - 1, | |
1457 | tty3270_getpar(tp, 0) - 1); | |
1458 | break; | |
1459 | case 'd': /* Set y position. */ | |
1460 | tty3270_goto_xy(tp, tp->cx, tty3270_getpar(tp, 0) - 1); | |
1461 | break; | |
1462 | case 'A': /* Cursor up. */ | |
1463 | case 'F': | |
1464 | tty3270_goto_xy(tp, tp->cx, tp->cy - tty3270_getpar(tp, 0)); | |
1465 | break; | |
1466 | case 'B': /* Cursor down. */ | |
1467 | case 'e': | |
1468 | case 'E': | |
1469 | tty3270_goto_xy(tp, tp->cx, tp->cy + tty3270_getpar(tp, 0)); | |
1470 | break; | |
1471 | case 'C': /* Cursor forward. */ | |
1472 | case 'a': | |
1473 | tty3270_goto_xy(tp, tp->cx + tty3270_getpar(tp, 0), tp->cy); | |
1474 | break; | |
1475 | case 'D': /* Cursor backward. */ | |
1476 | tty3270_goto_xy(tp, tp->cx - tty3270_getpar(tp, 0), tp->cy); | |
1477 | break; | |
1478 | case 'G': /* Set x position. */ | |
1479 | case '`': | |
1480 | tty3270_goto_xy(tp, tty3270_getpar(tp, 0), tp->cy); | |
1481 | break; | |
1482 | case 'X': /* Erase Characters. */ | |
1483 | tty3270_erase_characters(tp, tty3270_getpar(tp, 0)); | |
1484 | break; | |
1485 | case 'J': /* Erase display. */ | |
1486 | tty3270_erase_display(tp, tp->esc_par[0]); | |
1487 | break; | |
1488 | case 'K': /* Erase line. */ | |
1489 | tty3270_erase_line(tp, tp->esc_par[0]); | |
1490 | break; | |
1491 | case 'P': /* Delete characters. */ | |
1492 | tty3270_delete_characters(tp, tty3270_getpar(tp, 0)); | |
1493 | break; | |
1494 | case '@': /* Insert characters. */ | |
1495 | tty3270_insert_characters(tp, tty3270_getpar(tp, 0)); | |
1496 | break; | |
1497 | case 's': /* Save cursor position. */ | |
1498 | tp->saved_cx = tp->cx; | |
1499 | tp->saved_cy = tp->cy; | |
1500 | tp->saved_highlight = tp->highlight; | |
1501 | tp->saved_f_color = tp->f_color; | |
1502 | break; | |
1503 | case 'u': /* Restore cursor position. */ | |
1504 | tty3270_convert_line(tp, tp->cy); | |
1505 | tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy); | |
1506 | tp->highlight = tp->saved_highlight; | |
1507 | tp->f_color = tp->saved_f_color; | |
1508 | break; | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * String write routine for 3270 ttys | |
1514 | */ | |
1515 | static void | |
1516 | tty3270_do_write(struct tty3270 *tp, const unsigned char *buf, int count) | |
1517 | { | |
1518 | int i_msg, i; | |
1519 | ||
1520 | spin_lock_bh(&tp->view.lock); | |
1521 | for (i_msg = 0; !tp->tty->stopped && i_msg < count; i_msg++) { | |
1522 | if (tp->esc_state != 0) { | |
1523 | /* Continue escape sequence. */ | |
1524 | tty3270_escape_sequence(tp, buf[i_msg]); | |
1525 | continue; | |
1526 | } | |
1527 | ||
1528 | switch (buf[i_msg]) { | |
1529 | case 0x07: /* '\a' -- Alarm */ | |
1530 | tp->wcc |= TW_PLUSALARM; | |
1531 | break; | |
1532 | case 0x08: /* Backspace. */ | |
1533 | if (tp->cx > 0) { | |
1534 | tp->cx--; | |
1535 | tty3270_put_character(tp, ' '); | |
1536 | } | |
1537 | break; | |
1538 | case 0x09: /* '\t' -- Tabulate */ | |
1539 | for (i = tp->cx % 8; i < 8; i++) { | |
1540 | if (tp->cx >= tp->view.cols) { | |
1541 | tty3270_cr(tp); | |
1542 | tty3270_lf(tp); | |
1543 | break; | |
1544 | } | |
1545 | tty3270_put_character(tp, ' '); | |
1546 | tp->cx++; | |
1547 | } | |
1548 | break; | |
1549 | case 0x0a: /* '\n' -- New Line */ | |
1550 | tty3270_cr(tp); | |
1551 | tty3270_lf(tp); | |
1552 | break; | |
1553 | case 0x0c: /* '\f' -- Form Feed */ | |
1554 | tty3270_erase_display(tp, 2); | |
1555 | tp->cx = tp->cy = 0; | |
1556 | break; | |
1557 | case 0x0d: /* '\r' -- Carriage Return */ | |
1558 | tp->cx = 0; | |
1559 | break; | |
1560 | case 0x0f: /* SuSE "exit alternate mode" */ | |
1561 | break; | |
1562 | case 0x1b: /* Start escape sequence. */ | |
1563 | tty3270_escape_sequence(tp, buf[i_msg]); | |
1564 | break; | |
1565 | default: /* Insert normal character. */ | |
1566 | if (tp->cx >= tp->view.cols) { | |
1567 | tty3270_cr(tp); | |
1568 | tty3270_lf(tp); | |
1569 | } | |
1570 | tty3270_put_character(tp, buf[i_msg]); | |
1571 | tp->cx++; | |
1572 | break; | |
1573 | } | |
1574 | } | |
1575 | /* Convert current line to 3270 data fragment. */ | |
1576 | tty3270_convert_line(tp, tp->cy); | |
1577 | ||
1578 | /* Setup timer to update display after 1/10 second */ | |
1579 | if (!timer_pending(&tp->timer)) | |
1580 | tty3270_set_timer(tp, HZ/10); | |
1581 | ||
1582 | spin_unlock_bh(&tp->view.lock); | |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * String write routine for 3270 ttys | |
1587 | */ | |
1588 | static int | |
1589 | tty3270_write(struct tty_struct * tty, | |
1590 | const unsigned char *buf, int count) | |
1591 | { | |
1592 | struct tty3270 *tp; | |
1593 | ||
1594 | tp = tty->driver_data; | |
1595 | if (!tp) | |
1596 | return 0; | |
1597 | if (tp->char_count > 0) { | |
1598 | tty3270_do_write(tp, tp->char_buf, tp->char_count); | |
1599 | tp->char_count = 0; | |
1600 | } | |
1601 | tty3270_do_write(tp, buf, count); | |
1602 | return count; | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Put single characters to the ttys character buffer | |
1607 | */ | |
74c76c84 | 1608 | static int tty3270_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 LT |
1609 | { |
1610 | struct tty3270 *tp; | |
1611 | ||
1612 | tp = tty->driver_data; | |
74c76c84 HC |
1613 | if (!tp || tp->char_count >= TTY3270_CHAR_BUF_SIZE) |
1614 | return 0; | |
1615 | tp->char_buf[tp->char_count++] = ch; | |
1616 | return 1; | |
1da177e4 LT |
1617 | } |
1618 | ||
1619 | /* | |
1620 | * Flush all characters from the ttys characeter buffer put there | |
1621 | * by tty3270_put_char. | |
1622 | */ | |
1623 | static void | |
1624 | tty3270_flush_chars(struct tty_struct *tty) | |
1625 | { | |
1626 | struct tty3270 *tp; | |
1627 | ||
1628 | tp = tty->driver_data; | |
1629 | if (!tp) | |
1630 | return; | |
1631 | if (tp->char_count > 0) { | |
1632 | tty3270_do_write(tp, tp->char_buf, tp->char_count); | |
1633 | tp->char_count = 0; | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * Returns the number of characters in the output buffer. This is | |
1639 | * used in tty_wait_until_sent to wait until all characters have | |
1640 | * appeared on the screen. | |
1641 | */ | |
1642 | static int | |
1643 | tty3270_chars_in_buffer(struct tty_struct *tty) | |
1644 | { | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | static void | |
1649 | tty3270_flush_buffer(struct tty_struct *tty) | |
1650 | { | |
1651 | } | |
1652 | ||
1653 | /* | |
1654 | * Check for visible/invisible input switches | |
1655 | */ | |
1656 | static void | |
606d099c | 1657 | tty3270_set_termios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 LT |
1658 | { |
1659 | struct tty3270 *tp; | |
1660 | int new; | |
1661 | ||
1662 | tp = tty->driver_data; | |
1663 | if (!tp) | |
1664 | return; | |
1665 | spin_lock_bh(&tp->view.lock); | |
1666 | if (L_ICANON(tty)) { | |
1667 | new = L_ECHO(tty) ? TF_INPUT: TF_INPUTN; | |
1668 | if (new != tp->inattr) { | |
1669 | tp->inattr = new; | |
d2c993d8 | 1670 | tty3270_update_prompt(tp, NULL, 0); |
1da177e4 LT |
1671 | tty3270_set_timer(tp, 1); |
1672 | } | |
1673 | } | |
1674 | spin_unlock_bh(&tp->view.lock); | |
1675 | } | |
1676 | ||
1677 | /* | |
1678 | * Disable reading from a 3270 tty | |
1679 | */ | |
1680 | static void | |
1681 | tty3270_throttle(struct tty_struct * tty) | |
1682 | { | |
1683 | struct tty3270 *tp; | |
1684 | ||
1685 | tp = tty->driver_data; | |
1686 | if (!tp) | |
1687 | return; | |
1688 | tp->throttle = 1; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * Enable reading from a 3270 tty | |
1693 | */ | |
1694 | static void | |
1695 | tty3270_unthrottle(struct tty_struct * tty) | |
1696 | { | |
1697 | struct tty3270 *tp; | |
1698 | ||
1699 | tp = tty->driver_data; | |
1700 | if (!tp) | |
1701 | return; | |
1702 | tp->throttle = 0; | |
1703 | if (tp->attn) | |
1704 | tty3270_issue_read(tp, 1); | |
1705 | } | |
1706 | ||
1707 | /* | |
1708 | * Hang up the tty device. | |
1709 | */ | |
1710 | static void | |
1711 | tty3270_hangup(struct tty_struct *tty) | |
1712 | { | |
1713 | // FIXME: implement | |
1714 | } | |
1715 | ||
1716 | static void | |
1717 | tty3270_wait_until_sent(struct tty_struct *tty, int timeout) | |
1718 | { | |
1719 | } | |
1720 | ||
65c56e07 HC |
1721 | static int tty3270_ioctl(struct tty_struct *tty, unsigned int cmd, |
1722 | unsigned long arg) | |
1da177e4 LT |
1723 | { |
1724 | struct tty3270 *tp; | |
1725 | ||
1726 | tp = tty->driver_data; | |
1727 | if (!tp) | |
1728 | return -ENODEV; | |
1729 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
1730 | return -EIO; | |
65c56e07 | 1731 | return kbd_ioctl(tp->kbd, cmd, arg); |
1da177e4 LT |
1732 | } |
1733 | ||
9d4bfd41 | 1734 | #ifdef CONFIG_COMPAT |
65c56e07 HC |
1735 | static long tty3270_compat_ioctl(struct tty_struct *tty, |
1736 | unsigned int cmd, unsigned long arg) | |
9d4bfd41 AB |
1737 | { |
1738 | struct tty3270 *tp; | |
1739 | ||
1740 | tp = tty->driver_data; | |
1741 | if (!tp) | |
1742 | return -ENODEV; | |
1743 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
1744 | return -EIO; | |
65c56e07 | 1745 | return kbd_ioctl(tp->kbd, cmd, (unsigned long)compat_ptr(arg)); |
9d4bfd41 AB |
1746 | } |
1747 | #endif | |
1748 | ||
b68e31d0 | 1749 | static const struct tty_operations tty3270_ops = { |
1da177e4 LT |
1750 | .open = tty3270_open, |
1751 | .close = tty3270_close, | |
1752 | .write = tty3270_write, | |
1753 | .put_char = tty3270_put_char, | |
1754 | .flush_chars = tty3270_flush_chars, | |
1755 | .write_room = tty3270_write_room, | |
1756 | .chars_in_buffer = tty3270_chars_in_buffer, | |
1757 | .flush_buffer = tty3270_flush_buffer, | |
1758 | .throttle = tty3270_throttle, | |
1759 | .unthrottle = tty3270_unthrottle, | |
1760 | .hangup = tty3270_hangup, | |
1761 | .wait_until_sent = tty3270_wait_until_sent, | |
1762 | .ioctl = tty3270_ioctl, | |
9d4bfd41 AB |
1763 | #ifdef CONFIG_COMPAT |
1764 | .compat_ioctl = tty3270_compat_ioctl, | |
1765 | #endif | |
1da177e4 LT |
1766 | .set_termios = tty3270_set_termios |
1767 | }; | |
1768 | ||
1da177e4 LT |
1769 | /* |
1770 | * 3270 tty registration code called from tty_init(). | |
1771 | * Most kernel services (incl. kmalloc) are available at this poimt. | |
1772 | */ | |
2b67fc46 | 1773 | static int __init tty3270_init(void) |
1da177e4 LT |
1774 | { |
1775 | struct tty_driver *driver; | |
1776 | int ret; | |
1777 | ||
ed3cb6f0 | 1778 | driver = alloc_tty_driver(RAW3270_MAXDEVS); |
1da177e4 LT |
1779 | if (!driver) |
1780 | return -ENOMEM; | |
1781 | ||
1782 | /* | |
1783 | * Initialize the tty_driver structure | |
1784 | * Entries in tty3270_driver that are NOT initialized: | |
1785 | * proc_entry, set_termios, flush_buffer, set_ldisc, write_proc | |
1786 | */ | |
1da177e4 LT |
1787 | driver->driver_name = "ttyTUB"; |
1788 | driver->name = "ttyTUB"; | |
1789 | driver->major = IBM_TTY3270_MAJOR; | |
ed3cb6f0 | 1790 | driver->minor_start = RAW3270_FIRSTMINOR; |
1da177e4 LT |
1791 | driver->type = TTY_DRIVER_TYPE_SYSTEM; |
1792 | driver->subtype = SYSTEM_TYPE_TTY; | |
1793 | driver->init_termios = tty_std_termios; | |
331b8319 | 1794 | driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
1795 | tty_set_operations(driver, &tty3270_ops); |
1796 | ret = tty_register_driver(driver); | |
1797 | if (ret) { | |
1da177e4 LT |
1798 | put_tty_driver(driver); |
1799 | return ret; | |
1800 | } | |
1801 | tty3270_driver = driver; | |
1da177e4 LT |
1802 | return 0; |
1803 | } | |
1804 | ||
1805 | static void __exit | |
1806 | tty3270_exit(void) | |
1807 | { | |
1808 | struct tty_driver *driver; | |
1809 | ||
1da177e4 | 1810 | driver = tty3270_driver; |
d2c993d8 | 1811 | tty3270_driver = NULL; |
1da177e4 LT |
1812 | tty_unregister_driver(driver); |
1813 | tty3270_del_views(); | |
1814 | } | |
1815 | ||
1816 | MODULE_LICENSE("GPL"); | |
1817 | MODULE_ALIAS_CHARDEV_MAJOR(IBM_TTY3270_MAJOR); | |
1818 | ||
1819 | module_init(tty3270_init); | |
1820 | module_exit(tty3270_exit); |