blob: 1227f4591f8d76078631a73d1cd61f1a4045cd06 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * drivers/s390/char/fs3270.c
3 * IBM/3270 Driver - fullscreen driver.
4 *
5 * Author(s):
6 * Original 3270 Code for 2.4 written by Richard Hitt (UTS Global)
7 * Rewritten for 2.5/2.6 by Martin Schwidefsky <schwidefsky@de.ibm.com>
8 * -- Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
9 */
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/bootmem.h>
12#include <linux/console.h>
13#include <linux/init.h>
14#include <linux/interrupt.h>
15#include <linux/list.h>
16#include <linux/types.h>
Jonathan Corbet764a4a82008-05-15 10:01:17 -060017#include <linux/smp_lock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19#include <asm/ccwdev.h>
20#include <asm/cio.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include <asm/ebcdic.h>
22#include <asm/idals.h>
23
24#include "raw3270.h"
25#include "ctrlchar.h"
26
Heiko Carstens2b67fc42007-02-05 21:16:47 +010027static struct raw3270_fn fs3270_fn;
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29struct fs3270 {
30 struct raw3270_view view;
Cedric Le Goater782237a2006-10-02 02:17:28 -070031 struct pid *fs_pid; /* Pid of controlling program. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 int read_command; /* ccw command to use for reads. */
33 int write_command; /* ccw command to use for writes. */
34 int attention; /* Got attention. */
Richard Hitted3cb6f2005-10-30 15:00:10 -080035 int active; /* Fullscreen view is active. */
36 struct raw3270_request *init; /* single init request. */
37 wait_queue_head_t wait; /* Init & attention wait queue. */
38 struct idal_buffer *rdbuf; /* full-screen-deactivate buffer */
39 size_t rdbuf_size; /* size of data returned by RDBUF */
Linus Torvalds1da177e2005-04-16 15:20:36 -070040};
41
42static void
43fs3270_wake_up(struct raw3270_request *rq, void *data)
44{
45 wake_up((wait_queue_head_t *) data);
46}
47
Richard Hitted3cb6f2005-10-30 15:00:10 -080048static inline int
49fs3270_working(struct fs3270 *fp)
50{
51 /*
52 * The fullscreen view is in working order if the view
53 * has been activated AND the initial request is finished.
54 */
55 return fp->active && raw3270_request_final(fp->init);
56}
57
Linus Torvalds1da177e2005-04-16 15:20:36 -070058static int
59fs3270_do_io(struct raw3270_view *view, struct raw3270_request *rq)
60{
Richard Hitted3cb6f2005-10-30 15:00:10 -080061 struct fs3270 *fp;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 int rc;
63
Richard Hitted3cb6f2005-10-30 15:00:10 -080064 fp = (struct fs3270 *) view;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 rq->callback = fs3270_wake_up;
Richard Hitted3cb6f2005-10-30 15:00:10 -080066 rq->callback_data = &fp->wait;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
Richard Hitted3cb6f2005-10-30 15:00:10 -080068 do {
69 if (!fs3270_working(fp)) {
70 /* Fullscreen view isn't ready yet. */
71 rc = wait_event_interruptible(fp->wait,
72 fs3270_working(fp));
73 if (rc != 0)
74 break;
75 }
76 rc = raw3270_start(view, rq);
77 if (rc == 0) {
78 /* Started sucessfully. Now wait for completion. */
79 wait_event(fp->wait, raw3270_request_final(rq));
80 }
81 } while (rc == -EACCES);
82 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -070083}
84
85/*
86 * Switch to the fullscreen view.
87 */
Richard Hitted3cb6f2005-10-30 15:00:10 -080088static void
89fs3270_reset_callback(struct raw3270_request *rq, void *data)
90{
91 struct fs3270 *fp;
92
93 fp = (struct fs3270 *) rq->view;
94 raw3270_request_reset(rq);
95 wake_up(&fp->wait);
96}
97
98static void
99fs3270_restore_callback(struct raw3270_request *rq, void *data)
100{
101 struct fs3270 *fp;
102
103 fp = (struct fs3270 *) rq->view;
104 if (rq->rc != 0 || rq->rescnt != 0) {
105 if (fp->fs_pid)
Cedric Le Goater782237a2006-10-02 02:17:28 -0700106 kill_pid(fp->fs_pid, SIGHUP, 1);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800107 }
108 fp->rdbuf_size = 0;
109 raw3270_request_reset(rq);
110 wake_up(&fp->wait);
111}
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113static int
114fs3270_activate(struct raw3270_view *view)
115{
116 struct fs3270 *fp;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800117 char *cp;
118 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
120 fp = (struct fs3270 *) view;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800121
122 /* If an old init command is still running just return. */
123 if (!raw3270_request_final(fp->init))
124 return 0;
125
126 if (fp->rdbuf_size == 0) {
127 /* No saved buffer. Just clear the screen. */
128 raw3270_request_set_cmd(fp->init, TC_EWRITEA);
129 fp->init->callback = fs3270_reset_callback;
130 } else {
131 /* Restore fullscreen buffer saved by fs3270_deactivate. */
132 raw3270_request_set_cmd(fp->init, TC_EWRITEA);
133 raw3270_request_set_idal(fp->init, fp->rdbuf);
134 fp->init->ccw.count = fp->rdbuf_size;
135 cp = fp->rdbuf->data[0];
136 cp[0] = TW_KR;
137 cp[1] = TO_SBA;
138 cp[2] = cp[6];
139 cp[3] = cp[7];
140 cp[4] = TO_IC;
141 cp[5] = TO_SBA;
142 cp[6] = 0x40;
143 cp[7] = 0x40;
144 fp->init->rescnt = 0;
145 fp->init->callback = fs3270_restore_callback;
146 }
147 rc = fp->init->rc = raw3270_start_locked(view, fp->init);
148 if (rc)
149 fp->init->callback(fp->init, NULL);
150 else
151 fp->active = 1;
152 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153}
154
155/*
156 * Shutdown fullscreen view.
157 */
158static void
Richard Hitted3cb6f2005-10-30 15:00:10 -0800159fs3270_save_callback(struct raw3270_request *rq, void *data)
160{
161 struct fs3270 *fp;
162
163 fp = (struct fs3270 *) rq->view;
164
165 /* Correct idal buffer element 0 address. */
166 fp->rdbuf->data[0] -= 5;
167 fp->rdbuf->size += 5;
168
169 /*
170 * If the rdbuf command failed or the idal buffer is
171 * to small for the amount of data returned by the
172 * rdbuf command, then we have no choice but to send
173 * a SIGHUP to the application.
174 */
175 if (rq->rc != 0 || rq->rescnt == 0) {
176 if (fp->fs_pid)
Cedric Le Goater782237a2006-10-02 02:17:28 -0700177 kill_pid(fp->fs_pid, SIGHUP, 1);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800178 fp->rdbuf_size = 0;
179 } else
180 fp->rdbuf_size = fp->rdbuf->size - rq->rescnt;
181 raw3270_request_reset(rq);
182 wake_up(&fp->wait);
183}
184
185static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186fs3270_deactivate(struct raw3270_view *view)
187{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 struct fs3270 *fp;
189
190 fp = (struct fs3270 *) view;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800191 fp->active = 0;
192
193 /* If an old init command is still running just return. */
194 if (!raw3270_request_final(fp->init))
195 return;
196
197 /* Prepare read-buffer request. */
198 raw3270_request_set_cmd(fp->init, TC_RDBUF);
199 /*
200 * Hackish: skip first 5 bytes of the idal buffer to make
201 * room for the TW_KR/TO_SBA/<address>/<address>/TO_IC sequence
202 * in the activation command.
203 */
204 fp->rdbuf->data[0] += 5;
205 fp->rdbuf->size -= 5;
206 raw3270_request_set_idal(fp->init, fp->rdbuf);
207 fp->init->rescnt = 0;
208 fp->init->callback = fs3270_save_callback;
209
210 /* Start I/O to read in the 3270 buffer. */
211 fp->init->rc = raw3270_start_locked(view, fp->init);
212 if (fp->init->rc)
213 fp->init->callback(fp->init, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214}
215
216static int
217fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb)
218{
219 /* Handle ATTN. Set indication and wake waiters for attention. */
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200220 if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 fp->attention = 1;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800222 wake_up(&fp->wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 }
224
225 if (rq) {
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200226 if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 rq->rc = -EIO;
228 else
229 /* Normal end. Copy residual count. */
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200230 rq->rescnt = irb->scsw.cmd.count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 }
232 return RAW3270_IO_DONE;
233}
234
235/*
236 * Process reads from fullscreen 3270.
237 */
238static ssize_t
Heiko Carstensd2c993d2006-07-12 16:41:55 +0200239fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240{
241 struct fs3270 *fp;
242 struct raw3270_request *rq;
243 struct idal_buffer *ib;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800244 ssize_t rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
246 if (count == 0 || count > 65535)
247 return -EINVAL;
248 fp = filp->private_data;
249 if (!fp)
250 return -ENODEV;
251 ib = idal_buffer_alloc(count, 0);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800252 if (IS_ERR(ib))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 return -ENOMEM;
254 rq = raw3270_request_alloc(0);
255 if (!IS_ERR(rq)) {
256 if (fp->read_command == 0 && fp->write_command != 0)
257 fp->read_command = 6;
258 raw3270_request_set_cmd(rq, fp->read_command ? : 2);
259 raw3270_request_set_idal(rq, ib);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800260 rc = wait_event_interruptible(fp->wait, fp->attention);
261 fp->attention = 0;
262 if (rc == 0) {
263 rc = fs3270_do_io(&fp->view, rq);
264 if (rc == 0) {
265 count -= rq->rescnt;
266 if (idal_buffer_to_user(ib, data, count) != 0)
267 rc = -EFAULT;
268 else
269 rc = count;
270
271 }
272 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 raw3270_request_free(rq);
274 } else
275 rc = PTR_ERR(rq);
276 idal_buffer_free(ib);
277 return rc;
278}
279
280/*
281 * Process writes to fullscreen 3270.
282 */
283static ssize_t
Heiko Carstensd2c993d2006-07-12 16:41:55 +0200284fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *off)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285{
286 struct fs3270 *fp;
287 struct raw3270_request *rq;
288 struct idal_buffer *ib;
289 int write_command;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800290 ssize_t rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
292 fp = filp->private_data;
293 if (!fp)
294 return -ENODEV;
295 ib = idal_buffer_alloc(count, 0);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800296 if (IS_ERR(ib))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 return -ENOMEM;
298 rq = raw3270_request_alloc(0);
299 if (!IS_ERR(rq)) {
300 if (idal_buffer_from_user(ib, data, count) == 0) {
301 write_command = fp->write_command ? : 1;
302 if (write_command == 5)
303 write_command = 13;
304 raw3270_request_set_cmd(rq, write_command);
305 raw3270_request_set_idal(rq, ib);
306 rc = fs3270_do_io(&fp->view, rq);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800307 if (rc == 0)
308 rc = count - rq->rescnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 } else
310 rc = -EFAULT;
311 raw3270_request_free(rq);
312 } else
313 rc = PTR_ERR(rq);
314 idal_buffer_free(ib);
315 return rc;
316}
317
318/*
319 * process ioctl commands for the tube driver
320 */
Christoph Hellwig0f75e002006-01-09 20:52:04 -0800321static long
322fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323{
324 struct fs3270 *fp;
325 struct raw3270_iocb iocb;
326 int rc;
327
328 fp = filp->private_data;
329 if (!fp)
330 return -ENODEV;
331 rc = 0;
Christoph Hellwig0f75e002006-01-09 20:52:04 -0800332 lock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 switch (cmd) {
334 case TUBICMD:
335 fp->read_command = arg;
336 break;
337 case TUBOCMD:
338 fp->write_command = arg;
339 break;
340 case TUBGETI:
Heiko Carstensd2c993d2006-07-12 16:41:55 +0200341 rc = put_user(fp->read_command, (char __user *) arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 break;
343 case TUBGETO:
Heiko Carstensd2c993d2006-07-12 16:41:55 +0200344 rc = put_user(fp->write_command,(char __user *) arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 break;
346 case TUBGETMOD:
347 iocb.model = fp->view.model;
348 iocb.line_cnt = fp->view.rows;
349 iocb.col_cnt = fp->view.cols;
350 iocb.pf_cnt = 24;
351 iocb.re_cnt = 20;
352 iocb.map = 0;
Heiko Carstensd2c993d2006-07-12 16:41:55 +0200353 if (copy_to_user((char __user *) arg, &iocb,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 sizeof(struct raw3270_iocb)))
355 rc = -EFAULT;
356 break;
357 }
Christoph Hellwig0f75e002006-01-09 20:52:04 -0800358 unlock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 return rc;
360}
361
362/*
Richard Hitted3cb6f2005-10-30 15:00:10 -0800363 * Allocate fs3270 structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 */
365static struct fs3270 *
366fs3270_alloc_view(void)
367{
368 struct fs3270 *fp;
369
Eric Sesterhenn88abaab2006-03-24 03:15:31 -0800370 fp = kzalloc(sizeof(struct fs3270),GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 if (!fp)
372 return ERR_PTR(-ENOMEM);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800373 fp->init = raw3270_request_alloc(0);
374 if (IS_ERR(fp->init)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 kfree(fp);
376 return ERR_PTR(-ENOMEM);
377 }
378 return fp;
379}
380
381/*
Richard Hitted3cb6f2005-10-30 15:00:10 -0800382 * Free fs3270 structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 */
384static void
385fs3270_free_view(struct raw3270_view *view)
386{
Richard Hitted3cb6f2005-10-30 15:00:10 -0800387 struct fs3270 *fp;
388
389 fp = (struct fs3270 *) view;
390 if (fp->rdbuf)
391 idal_buffer_free(fp->rdbuf);
392 raw3270_request_free(((struct fs3270 *) view)->init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 kfree(view);
394}
395
396/*
397 * Unlink fs3270 data structure from filp.
398 */
399static void
400fs3270_release(struct raw3270_view *view)
401{
402}
403
404/* View to a 3270 device. Can be console, tty or fullscreen. */
Heiko Carstens2b67fc42007-02-05 21:16:47 +0100405static struct raw3270_fn fs3270_fn = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 .activate = fs3270_activate,
407 .deactivate = fs3270_deactivate,
408 .intv = (void *) fs3270_irq,
409 .release = fs3270_release,
410 .free = fs3270_free_view
411};
412
413/*
414 * This routine is called whenever a 3270 fullscreen device is opened.
415 */
416static int
417fs3270_open(struct inode *inode, struct file *filp)
418{
419 struct fs3270 *fp;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800420 struct idal_buffer *ib;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 int minor, rc;
422
Josef Sipek49522c92006-12-08 02:37:34 -0800423 if (imajor(filp->f_path.dentry->d_inode) != IBM_FS3270_MAJOR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 return -ENODEV;
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600425 lock_kernel();
Josef Sipek49522c92006-12-08 02:37:34 -0800426 minor = iminor(filp->f_path.dentry->d_inode);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800427 /* Check for minor 0 multiplexer. */
428 if (minor == 0) {
Alan Coxa90610e2008-10-13 10:45:52 +0100429 struct tty_struct *tty = get_current_tty();
Peter Zijlstra24ec8392006-12-08 02:36:04 -0800430 if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) {
Alan Cox452a00d2008-10-13 10:39:13 +0100431 tty_kref_put(tty);
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600432 rc = -ENODEV;
433 goto out;
Peter Zijlstra24ec8392006-12-08 02:36:04 -0800434 }
435 minor = tty->index + RAW3270_FIRSTMINOR;
Alan Cox452a00d2008-10-13 10:39:13 +0100436 tty_kref_put(tty);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800437 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 /* Check if some other program is already using fullscreen mode. */
439 fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor);
440 if (!IS_ERR(fp)) {
441 raw3270_put_view(&fp->view);
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600442 rc = -EBUSY;
443 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 }
445 /* Allocate fullscreen view structure. */
446 fp = fs3270_alloc_view();
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600447 if (IS_ERR(fp)) {
448 rc = PTR_ERR(fp);
449 goto out;
450 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
Richard Hitted3cb6f2005-10-30 15:00:10 -0800452 init_waitqueue_head(&fp->wait);
Cedric Le Goater782237a2006-10-02 02:17:28 -0700453 fp->fs_pid = get_pid(task_pid(current));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 rc = raw3270_add_view(&fp->view, &fs3270_fn, minor);
455 if (rc) {
456 fs3270_free_view(&fp->view);
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600457 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 }
459
Richard Hitted3cb6f2005-10-30 15:00:10 -0800460 /* Allocate idal-buffer. */
461 ib = idal_buffer_alloc(2*fp->view.rows*fp->view.cols + 5, 0);
462 if (IS_ERR(ib)) {
463 raw3270_put_view(&fp->view);
464 raw3270_del_view(&fp->view);
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600465 rc = PTR_ERR(fp);
466 goto out;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800467 }
468 fp->rdbuf = ib;
469
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 rc = raw3270_activate_view(&fp->view);
471 if (rc) {
Richard Hitted3cb6f2005-10-30 15:00:10 -0800472 raw3270_put_view(&fp->view);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 raw3270_del_view(&fp->view);
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600474 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 }
476 filp->private_data = fp;
Jonathan Corbet764a4a82008-05-15 10:01:17 -0600477out:
478 unlock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 return 0;
480}
481
482/*
483 * This routine is called when the 3270 tty is closed. We wait
484 * for the remaining request to be completed. Then we clean up.
485 */
486static int
487fs3270_close(struct inode *inode, struct file *filp)
488{
489 struct fs3270 *fp;
490
491 fp = filp->private_data;
Heiko Carstensd2c993d2006-07-12 16:41:55 +0200492 filp->private_data = NULL;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800493 if (fp) {
Cedric Le Goater782237a2006-10-02 02:17:28 -0700494 put_pid(fp->fs_pid);
495 fp->fs_pid = NULL;
Richard Hitted3cb6f2005-10-30 15:00:10 -0800496 raw3270_reset(&fp->view);
497 raw3270_put_view(&fp->view);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 raw3270_del_view(&fp->view);
Richard Hitted3cb6f2005-10-30 15:00:10 -0800499 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 return 0;
501}
502
Arjan van de Vend54b1fd2007-02-12 00:55:34 -0800503static const struct file_operations fs3270_fops = {
Christoph Hellwig0f75e002006-01-09 20:52:04 -0800504 .owner = THIS_MODULE, /* owner */
505 .read = fs3270_read, /* read */
506 .write = fs3270_write, /* write */
507 .unlocked_ioctl = fs3270_ioctl, /* ioctl */
508 .compat_ioctl = fs3270_ioctl, /* ioctl */
509 .open = fs3270_open, /* open */
510 .release = fs3270_close, /* release */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511};
512
513/*
514 * 3270 fullscreen driver initialization.
515 */
516static int __init
517fs3270_init(void)
518{
519 int rc;
520
521 rc = register_chrdev(IBM_FS3270_MAJOR, "fs3270", &fs3270_fops);
Martin Schwidefskya26182e2008-07-14 09:59:25 +0200522 if (rc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 return 0;
525}
526
527static void __exit
528fs3270_exit(void)
529{
530 unregister_chrdev(IBM_FS3270_MAJOR, "fs3270");
531}
532
533MODULE_LICENSE("GPL");
534MODULE_ALIAS_CHARDEV_MAJOR(IBM_FS3270_MAJOR);
535
536module_init(fs3270_init);
537module_exit(fs3270_exit);