Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
4b214a0c | 2 | * IBM/3270 Driver - fullscreen driver. |
1da177e4 | 3 | * |
4b214a0c MS |
4 | * Author(s): |
5 | * Original 3270 Code for 2.4 written by Richard Hitt (UTS Global) | |
6 | * Rewritten for 2.5/2.6 by Martin Schwidefsky <schwidefsky@de.ibm.com> | |
7 | * Copyright IBM Corp. 2003, 2009 | |
1da177e4 LT |
8 | */ |
9 | ||
1da177e4 LT |
10 | #include <linux/bootmem.h> |
11 | #include <linux/console.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/list.h> | |
15 | #include <linux/types.h> | |
764a4a8e | 16 | #include <linux/smp_lock.h> |
1da177e4 LT |
17 | |
18 | #include <asm/ccwdev.h> | |
19 | #include <asm/cio.h> | |
1da177e4 LT |
20 | #include <asm/ebcdic.h> |
21 | #include <asm/idals.h> | |
22 | ||
23 | #include "raw3270.h" | |
24 | #include "ctrlchar.h" | |
25 | ||
2b67fc46 | 26 | static struct raw3270_fn fs3270_fn; |
1da177e4 LT |
27 | |
28 | struct fs3270 { | |
29 | struct raw3270_view view; | |
782237a2 | 30 | struct pid *fs_pid; /* Pid of controlling program. */ |
1da177e4 LT |
31 | int read_command; /* ccw command to use for reads. */ |
32 | int write_command; /* ccw command to use for writes. */ | |
33 | int attention; /* Got attention. */ | |
ed3cb6f0 RH |
34 | int active; /* Fullscreen view is active. */ |
35 | struct raw3270_request *init; /* single init request. */ | |
36 | wait_queue_head_t wait; /* Init & attention wait queue. */ | |
37 | struct idal_buffer *rdbuf; /* full-screen-deactivate buffer */ | |
38 | size_t rdbuf_size; /* size of data returned by RDBUF */ | |
1da177e4 LT |
39 | }; |
40 | ||
5cbb5f57 MS |
41 | static DEFINE_MUTEX(fs3270_mutex); |
42 | ||
1da177e4 LT |
43 | static void |
44 | fs3270_wake_up(struct raw3270_request *rq, void *data) | |
45 | { | |
46 | wake_up((wait_queue_head_t *) data); | |
47 | } | |
48 | ||
ed3cb6f0 RH |
49 | static inline int |
50 | fs3270_working(struct fs3270 *fp) | |
51 | { | |
52 | /* | |
53 | * The fullscreen view is in working order if the view | |
54 | * has been activated AND the initial request is finished. | |
55 | */ | |
56 | return fp->active && raw3270_request_final(fp->init); | |
57 | } | |
58 | ||
1da177e4 LT |
59 | static int |
60 | fs3270_do_io(struct raw3270_view *view, struct raw3270_request *rq) | |
61 | { | |
ed3cb6f0 | 62 | struct fs3270 *fp; |
1da177e4 LT |
63 | int rc; |
64 | ||
ed3cb6f0 | 65 | fp = (struct fs3270 *) view; |
1da177e4 | 66 | rq->callback = fs3270_wake_up; |
ed3cb6f0 RH |
67 | rq->callback_data = &fp->wait; |
68 | ||
69 | do { | |
70 | if (!fs3270_working(fp)) { | |
71 | /* Fullscreen view isn't ready yet. */ | |
72 | rc = wait_event_interruptible(fp->wait, | |
73 | fs3270_working(fp)); | |
74 | if (rc != 0) | |
75 | break; | |
76 | } | |
77 | rc = raw3270_start(view, rq); | |
78 | if (rc == 0) { | |
af901ca1 | 79 | /* Started successfully. Now wait for completion. */ |
ed3cb6f0 RH |
80 | wait_event(fp->wait, raw3270_request_final(rq)); |
81 | } | |
82 | } while (rc == -EACCES); | |
83 | return rc; | |
1da177e4 LT |
84 | } |
85 | ||
ed3cb6f0 RH |
86 | /* |
87 | * Switch to the fullscreen view. | |
88 | */ | |
1da177e4 LT |
89 | static void |
90 | fs3270_reset_callback(struct raw3270_request *rq, void *data) | |
91 | { | |
ed3cb6f0 RH |
92 | struct fs3270 *fp; |
93 | ||
94 | fp = (struct fs3270 *) rq->view; | |
1da177e4 | 95 | raw3270_request_reset(rq); |
ed3cb6f0 RH |
96 | wake_up(&fp->wait); |
97 | } | |
98 | ||
99 | static void | |
100 | fs3270_restore_callback(struct raw3270_request *rq, void *data) | |
101 | { | |
102 | struct fs3270 *fp; | |
103 | ||
104 | fp = (struct fs3270 *) rq->view; | |
105 | if (rq->rc != 0 || rq->rescnt != 0) { | |
106 | if (fp->fs_pid) | |
782237a2 | 107 | kill_pid(fp->fs_pid, SIGHUP, 1); |
ed3cb6f0 RH |
108 | } |
109 | fp->rdbuf_size = 0; | |
110 | raw3270_request_reset(rq); | |
111 | wake_up(&fp->wait); | |
1da177e4 LT |
112 | } |
113 | ||
1da177e4 LT |
114 | static int |
115 | fs3270_activate(struct raw3270_view *view) | |
116 | { | |
117 | struct fs3270 *fp; | |
ed3cb6f0 RH |
118 | char *cp; |
119 | int rc; | |
1da177e4 LT |
120 | |
121 | fp = (struct fs3270 *) view; | |
ed3cb6f0 RH |
122 | |
123 | /* If an old init command is still running just return. */ | |
124 | if (!raw3270_request_final(fp->init)) | |
125 | return 0; | |
126 | ||
127 | if (fp->rdbuf_size == 0) { | |
128 | /* No saved buffer. Just clear the screen. */ | |
129 | raw3270_request_set_cmd(fp->init, TC_EWRITEA); | |
130 | fp->init->callback = fs3270_reset_callback; | |
131 | } else { | |
132 | /* Restore fullscreen buffer saved by fs3270_deactivate. */ | |
133 | raw3270_request_set_cmd(fp->init, TC_EWRITEA); | |
134 | raw3270_request_set_idal(fp->init, fp->rdbuf); | |
135 | fp->init->ccw.count = fp->rdbuf_size; | |
136 | cp = fp->rdbuf->data[0]; | |
137 | cp[0] = TW_KR; | |
138 | cp[1] = TO_SBA; | |
139 | cp[2] = cp[6]; | |
140 | cp[3] = cp[7]; | |
141 | cp[4] = TO_IC; | |
142 | cp[5] = TO_SBA; | |
143 | cp[6] = 0x40; | |
144 | cp[7] = 0x40; | |
145 | fp->init->rescnt = 0; | |
146 | fp->init->callback = fs3270_restore_callback; | |
147 | } | |
148 | rc = fp->init->rc = raw3270_start_locked(view, fp->init); | |
149 | if (rc) | |
150 | fp->init->callback(fp->init, NULL); | |
151 | else | |
152 | fp->active = 1; | |
153 | return rc; | |
1da177e4 LT |
154 | } |
155 | ||
156 | /* | |
157 | * Shutdown fullscreen view. | |
158 | */ | |
ed3cb6f0 RH |
159 | static void |
160 | fs3270_save_callback(struct raw3270_request *rq, void *data) | |
161 | { | |
162 | struct fs3270 *fp; | |
163 | ||
164 | fp = (struct fs3270 *) rq->view; | |
165 | ||
166 | /* Correct idal buffer element 0 address. */ | |
167 | fp->rdbuf->data[0] -= 5; | |
168 | fp->rdbuf->size += 5; | |
169 | ||
170 | /* | |
171 | * If the rdbuf command failed or the idal buffer is | |
172 | * to small for the amount of data returned by the | |
173 | * rdbuf command, then we have no choice but to send | |
174 | * a SIGHUP to the application. | |
175 | */ | |
176 | if (rq->rc != 0 || rq->rescnt == 0) { | |
177 | if (fp->fs_pid) | |
782237a2 | 178 | kill_pid(fp->fs_pid, SIGHUP, 1); |
ed3cb6f0 RH |
179 | fp->rdbuf_size = 0; |
180 | } else | |
181 | fp->rdbuf_size = fp->rdbuf->size - rq->rescnt; | |
182 | raw3270_request_reset(rq); | |
183 | wake_up(&fp->wait); | |
184 | } | |
185 | ||
1da177e4 LT |
186 | static void |
187 | fs3270_deactivate(struct raw3270_view *view) | |
188 | { | |
1da177e4 LT |
189 | struct fs3270 *fp; |
190 | ||
191 | fp = (struct fs3270 *) view; | |
ed3cb6f0 RH |
192 | fp->active = 0; |
193 | ||
194 | /* If an old init command is still running just return. */ | |
195 | if (!raw3270_request_final(fp->init)) | |
196 | return; | |
197 | ||
198 | /* Prepare read-buffer request. */ | |
199 | raw3270_request_set_cmd(fp->init, TC_RDBUF); | |
200 | /* | |
201 | * Hackish: skip first 5 bytes of the idal buffer to make | |
202 | * room for the TW_KR/TO_SBA/<address>/<address>/TO_IC sequence | |
203 | * in the activation command. | |
204 | */ | |
205 | fp->rdbuf->data[0] += 5; | |
206 | fp->rdbuf->size -= 5; | |
207 | raw3270_request_set_idal(fp->init, fp->rdbuf); | |
208 | fp->init->rescnt = 0; | |
209 | fp->init->callback = fs3270_save_callback; | |
210 | ||
211 | /* Start I/O to read in the 3270 buffer. */ | |
212 | fp->init->rc = raw3270_start_locked(view, fp->init); | |
213 | if (fp->init->rc) | |
214 | fp->init->callback(fp->init, NULL); | |
1da177e4 LT |
215 | } |
216 | ||
217 | static int | |
218 | fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb) | |
219 | { | |
220 | /* Handle ATTN. Set indication and wake waiters for attention. */ | |
23d805b6 | 221 | if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
1da177e4 | 222 | fp->attention = 1; |
ed3cb6f0 | 223 | wake_up(&fp->wait); |
1da177e4 LT |
224 | } |
225 | ||
226 | if (rq) { | |
23d805b6 | 227 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
1da177e4 LT |
228 | rq->rc = -EIO; |
229 | else | |
230 | /* Normal end. Copy residual count. */ | |
23d805b6 | 231 | rq->rescnt = irb->scsw.cmd.count; |
1da177e4 LT |
232 | } |
233 | return RAW3270_IO_DONE; | |
234 | } | |
235 | ||
236 | /* | |
237 | * Process reads from fullscreen 3270. | |
238 | */ | |
239 | static ssize_t | |
d2c993d8 | 240 | fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off) |
1da177e4 LT |
241 | { |
242 | struct fs3270 *fp; | |
243 | struct raw3270_request *rq; | |
244 | struct idal_buffer *ib; | |
ed3cb6f0 | 245 | ssize_t rc; |
1da177e4 LT |
246 | |
247 | if (count == 0 || count > 65535) | |
248 | return -EINVAL; | |
249 | fp = filp->private_data; | |
250 | if (!fp) | |
251 | return -ENODEV; | |
252 | ib = idal_buffer_alloc(count, 0); | |
ed3cb6f0 | 253 | if (IS_ERR(ib)) |
1da177e4 LT |
254 | return -ENOMEM; |
255 | rq = raw3270_request_alloc(0); | |
256 | if (!IS_ERR(rq)) { | |
257 | if (fp->read_command == 0 && fp->write_command != 0) | |
258 | fp->read_command = 6; | |
259 | raw3270_request_set_cmd(rq, fp->read_command ? : 2); | |
260 | raw3270_request_set_idal(rq, ib); | |
ed3cb6f0 RH |
261 | rc = wait_event_interruptible(fp->wait, fp->attention); |
262 | fp->attention = 0; | |
263 | if (rc == 0) { | |
264 | rc = fs3270_do_io(&fp->view, rq); | |
265 | if (rc == 0) { | |
266 | count -= rq->rescnt; | |
267 | if (idal_buffer_to_user(ib, data, count) != 0) | |
268 | rc = -EFAULT; | |
269 | else | |
270 | rc = count; | |
271 | ||
272 | } | |
273 | } | |
1da177e4 LT |
274 | raw3270_request_free(rq); |
275 | } else | |
276 | rc = PTR_ERR(rq); | |
277 | idal_buffer_free(ib); | |
278 | return rc; | |
279 | } | |
280 | ||
281 | /* | |
282 | * Process writes to fullscreen 3270. | |
283 | */ | |
284 | static ssize_t | |
d2c993d8 | 285 | fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *off) |
1da177e4 LT |
286 | { |
287 | struct fs3270 *fp; | |
288 | struct raw3270_request *rq; | |
289 | struct idal_buffer *ib; | |
290 | int write_command; | |
ed3cb6f0 | 291 | ssize_t rc; |
1da177e4 LT |
292 | |
293 | fp = filp->private_data; | |
294 | if (!fp) | |
295 | return -ENODEV; | |
296 | ib = idal_buffer_alloc(count, 0); | |
ed3cb6f0 | 297 | if (IS_ERR(ib)) |
1da177e4 LT |
298 | return -ENOMEM; |
299 | rq = raw3270_request_alloc(0); | |
300 | if (!IS_ERR(rq)) { | |
301 | if (idal_buffer_from_user(ib, data, count) == 0) { | |
302 | write_command = fp->write_command ? : 1; | |
303 | if (write_command == 5) | |
304 | write_command = 13; | |
305 | raw3270_request_set_cmd(rq, write_command); | |
306 | raw3270_request_set_idal(rq, ib); | |
307 | rc = fs3270_do_io(&fp->view, rq); | |
ed3cb6f0 RH |
308 | if (rc == 0) |
309 | rc = count - rq->rescnt; | |
1da177e4 LT |
310 | } else |
311 | rc = -EFAULT; | |
312 | raw3270_request_free(rq); | |
313 | } else | |
314 | rc = PTR_ERR(rq); | |
315 | idal_buffer_free(ib); | |
316 | return rc; | |
317 | } | |
318 | ||
319 | /* | |
320 | * process ioctl commands for the tube driver | |
321 | */ | |
0f75e00c CH |
322 | static long |
323 | fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
324 | { |
325 | struct fs3270 *fp; | |
326 | struct raw3270_iocb iocb; | |
327 | int rc; | |
328 | ||
329 | fp = filp->private_data; | |
330 | if (!fp) | |
331 | return -ENODEV; | |
332 | rc = 0; | |
5cbb5f57 | 333 | mutex_lock(&fs3270_mutex); |
1da177e4 LT |
334 | switch (cmd) { |
335 | case TUBICMD: | |
336 | fp->read_command = arg; | |
337 | break; | |
338 | case TUBOCMD: | |
339 | fp->write_command = arg; | |
340 | break; | |
341 | case TUBGETI: | |
d2c993d8 | 342 | rc = put_user(fp->read_command, (char __user *) arg); |
1da177e4 LT |
343 | break; |
344 | case TUBGETO: | |
d2c993d8 | 345 | rc = put_user(fp->write_command,(char __user *) arg); |
1da177e4 LT |
346 | break; |
347 | case TUBGETMOD: | |
348 | iocb.model = fp->view.model; | |
349 | iocb.line_cnt = fp->view.rows; | |
350 | iocb.col_cnt = fp->view.cols; | |
351 | iocb.pf_cnt = 24; | |
352 | iocb.re_cnt = 20; | |
353 | iocb.map = 0; | |
d2c993d8 | 354 | if (copy_to_user((char __user *) arg, &iocb, |
1da177e4 LT |
355 | sizeof(struct raw3270_iocb))) |
356 | rc = -EFAULT; | |
357 | break; | |
358 | } | |
5cbb5f57 | 359 | mutex_unlock(&fs3270_mutex); |
1da177e4 LT |
360 | return rc; |
361 | } | |
362 | ||
363 | /* | |
ed3cb6f0 | 364 | * Allocate fs3270 structure. |
1da177e4 LT |
365 | */ |
366 | static struct fs3270 * | |
367 | fs3270_alloc_view(void) | |
368 | { | |
369 | struct fs3270 *fp; | |
370 | ||
88abaab4 | 371 | fp = kzalloc(sizeof(struct fs3270),GFP_KERNEL); |
1da177e4 LT |
372 | if (!fp) |
373 | return ERR_PTR(-ENOMEM); | |
ed3cb6f0 RH |
374 | fp->init = raw3270_request_alloc(0); |
375 | if (IS_ERR(fp->init)) { | |
1da177e4 LT |
376 | kfree(fp); |
377 | return ERR_PTR(-ENOMEM); | |
378 | } | |
379 | return fp; | |
380 | } | |
381 | ||
382 | /* | |
ed3cb6f0 | 383 | * Free fs3270 structure. |
1da177e4 LT |
384 | */ |
385 | static void | |
386 | fs3270_free_view(struct raw3270_view *view) | |
387 | { | |
ed3cb6f0 RH |
388 | struct fs3270 *fp; |
389 | ||
390 | fp = (struct fs3270 *) view; | |
391 | if (fp->rdbuf) | |
392 | idal_buffer_free(fp->rdbuf); | |
393 | raw3270_request_free(((struct fs3270 *) view)->init); | |
1da177e4 LT |
394 | kfree(view); |
395 | } | |
396 | ||
397 | /* | |
398 | * Unlink fs3270 data structure from filp. | |
399 | */ | |
400 | static void | |
401 | fs3270_release(struct raw3270_view *view) | |
402 | { | |
4b214a0c MS |
403 | struct fs3270 *fp; |
404 | ||
405 | fp = (struct fs3270 *) view; | |
406 | if (fp->fs_pid) | |
407 | kill_pid(fp->fs_pid, SIGHUP, 1); | |
1da177e4 LT |
408 | } |
409 | ||
410 | /* View to a 3270 device. Can be console, tty or fullscreen. */ | |
2b67fc46 | 411 | static struct raw3270_fn fs3270_fn = { |
1da177e4 LT |
412 | .activate = fs3270_activate, |
413 | .deactivate = fs3270_deactivate, | |
414 | .intv = (void *) fs3270_irq, | |
415 | .release = fs3270_release, | |
416 | .free = fs3270_free_view | |
417 | }; | |
418 | ||
419 | /* | |
420 | * This routine is called whenever a 3270 fullscreen device is opened. | |
421 | */ | |
422 | static int | |
423 | fs3270_open(struct inode *inode, struct file *filp) | |
424 | { | |
425 | struct fs3270 *fp; | |
ed3cb6f0 | 426 | struct idal_buffer *ib; |
a18992d4 | 427 | int minor, rc = 0; |
1da177e4 | 428 | |
49522c97 | 429 | if (imajor(filp->f_path.dentry->d_inode) != IBM_FS3270_MAJOR) |
1da177e4 | 430 | return -ENODEV; |
49522c97 | 431 | minor = iminor(filp->f_path.dentry->d_inode); |
ed3cb6f0 RH |
432 | /* Check for minor 0 multiplexer. */ |
433 | if (minor == 0) { | |
a90610e5 | 434 | struct tty_struct *tty = get_current_tty(); |
24ec839c | 435 | if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) { |
452a00d2 | 436 | tty_kref_put(tty); |
a18992d4 | 437 | return -ENODEV; |
24ec839c PZ |
438 | } |
439 | minor = tty->index + RAW3270_FIRSTMINOR; | |
452a00d2 | 440 | tty_kref_put(tty); |
ed3cb6f0 | 441 | } |
5cbb5f57 | 442 | mutex_lock(&fs3270_mutex); |
1da177e4 LT |
443 | /* Check if some other program is already using fullscreen mode. */ |
444 | fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor); | |
445 | if (!IS_ERR(fp)) { | |
446 | raw3270_put_view(&fp->view); | |
764a4a8e JC |
447 | rc = -EBUSY; |
448 | goto out; | |
1da177e4 LT |
449 | } |
450 | /* Allocate fullscreen view structure. */ | |
451 | fp = fs3270_alloc_view(); | |
764a4a8e JC |
452 | if (IS_ERR(fp)) { |
453 | rc = PTR_ERR(fp); | |
454 | goto out; | |
455 | } | |
1da177e4 | 456 | |
ed3cb6f0 | 457 | init_waitqueue_head(&fp->wait); |
782237a2 | 458 | fp->fs_pid = get_pid(task_pid(current)); |
1da177e4 LT |
459 | rc = raw3270_add_view(&fp->view, &fs3270_fn, minor); |
460 | if (rc) { | |
461 | fs3270_free_view(&fp->view); | |
764a4a8e | 462 | goto out; |
1da177e4 LT |
463 | } |
464 | ||
ed3cb6f0 RH |
465 | /* Allocate idal-buffer. */ |
466 | ib = idal_buffer_alloc(2*fp->view.rows*fp->view.cols + 5, 0); | |
467 | if (IS_ERR(ib)) { | |
468 | raw3270_put_view(&fp->view); | |
469 | raw3270_del_view(&fp->view); | |
2b31001d | 470 | rc = PTR_ERR(ib); |
764a4a8e | 471 | goto out; |
ed3cb6f0 RH |
472 | } |
473 | fp->rdbuf = ib; | |
474 | ||
1da177e4 LT |
475 | rc = raw3270_activate_view(&fp->view); |
476 | if (rc) { | |
ed3cb6f0 | 477 | raw3270_put_view(&fp->view); |
1da177e4 | 478 | raw3270_del_view(&fp->view); |
764a4a8e | 479 | goto out; |
1da177e4 LT |
480 | } |
481 | filp->private_data = fp; | |
764a4a8e | 482 | out: |
5cbb5f57 | 483 | mutex_unlock(&fs3270_mutex); |
a18992d4 | 484 | return rc; |
1da177e4 LT |
485 | } |
486 | ||
487 | /* | |
488 | * This routine is called when the 3270 tty is closed. We wait | |
489 | * for the remaining request to be completed. Then we clean up. | |
490 | */ | |
491 | static int | |
492 | fs3270_close(struct inode *inode, struct file *filp) | |
493 | { | |
494 | struct fs3270 *fp; | |
495 | ||
496 | fp = filp->private_data; | |
d2c993d8 | 497 | filp->private_data = NULL; |
ed3cb6f0 | 498 | if (fp) { |
782237a2 CLG |
499 | put_pid(fp->fs_pid); |
500 | fp->fs_pid = NULL; | |
ed3cb6f0 RH |
501 | raw3270_reset(&fp->view); |
502 | raw3270_put_view(&fp->view); | |
1da177e4 | 503 | raw3270_del_view(&fp->view); |
ed3cb6f0 | 504 | } |
1da177e4 LT |
505 | return 0; |
506 | } | |
507 | ||
d54b1fdb | 508 | static const struct file_operations fs3270_fops = { |
0f75e00c CH |
509 | .owner = THIS_MODULE, /* owner */ |
510 | .read = fs3270_read, /* read */ | |
511 | .write = fs3270_write, /* write */ | |
512 | .unlocked_ioctl = fs3270_ioctl, /* ioctl */ | |
513 | .compat_ioctl = fs3270_ioctl, /* ioctl */ | |
514 | .open = fs3270_open, /* open */ | |
515 | .release = fs3270_close, /* release */ | |
1da177e4 LT |
516 | }; |
517 | ||
518 | /* | |
519 | * 3270 fullscreen driver initialization. | |
520 | */ | |
521 | static int __init | |
522 | fs3270_init(void) | |
523 | { | |
524 | int rc; | |
525 | ||
526 | rc = register_chrdev(IBM_FS3270_MAJOR, "fs3270", &fs3270_fops); | |
a26182ed | 527 | if (rc) |
1da177e4 | 528 | return rc; |
1da177e4 LT |
529 | return 0; |
530 | } | |
531 | ||
532 | static void __exit | |
533 | fs3270_exit(void) | |
534 | { | |
535 | unregister_chrdev(IBM_FS3270_MAJOR, "fs3270"); | |
536 | } | |
537 | ||
538 | MODULE_LICENSE("GPL"); | |
539 | MODULE_ALIAS_CHARDEV_MAJOR(IBM_FS3270_MAJOR); | |
540 | ||
541 | module_init(fs3270_init); | |
542 | module_exit(fs3270_exit); |