s390/char/fs3270.c

53 static inline int fs3270_working(struct fs3270 *fp)
59 	return fp->active && raw3270_request_final(fp->init);
64 	struct fs3270 *fp;
67 	fp = (struct fs3270 *)view;
69 	rq->callback_data = &fp->wait;
72 		if (!fs3270_working(fp)) {
74 			rc = wait_event_interruptible(fp->wait,
75 						      fs3270_working(fp));
82 			wait_event(fp->wait, raw3270_request_final(rq));
93 	struct fs3270 *fp;
95 	fp = (struct fs3270 *)rq->view;
97 	wake_up(&fp->wait);
102 	struct fs3270 *fp;
104 	fp = (struct fs3270 *)rq->view;
106 		if (fp->fs_pid)
107 			kill_pid(fp->fs_pid, SIGHUP, 1);
109 	fp->rdbuf_size = 0;
111 	wake_up(&fp->wait);
116 	struct fs3270 *fp;
120 	fp = (struct fs3270 *)view;
123 	if (!raw3270_request_final(fp->init))
126 	raw3270_request_set_cmd(fp->init, TC_EWRITEA);
127 	raw3270_request_set_idal(fp->init, fp->rdbuf);
128 	fp->init->rescnt = 0;
129 	cp = dma64_to_virt(fp->rdbuf->data[0]);
130 	if (fp->rdbuf_size == 0) {
132 		fp->init->ccw.count = 1;
133 		fp->init->callback = fs3270_reset_callback;
137 		fp->init->ccw.count = fp->rdbuf_size;
138 		fp->init->callback = fs3270_restore_callback;
148 	rc = raw3270_start_locked(view, fp->init);
149 	fp->init->rc = rc;
151 		fp->init->callback(fp->init, NULL);
153 		fp->active = 1;
162 	struct fs3270 *fp;
164 	fp = (struct fs3270 *)rq->view;
167 	fp->rdbuf->data[0] = dma64_add(fp->rdbuf->data[0], -5);
168 	fp->rdbuf->size += 5;
177 		if (fp->fs_pid)
178 			kill_pid(fp->fs_pid, SIGHUP, 1);
179 		fp->rdbuf_size = 0;
181 		fp->rdbuf_size = fp->rdbuf->size - rq->rescnt;
184 	wake_up(&fp->wait);
189 	struct fs3270 *fp;
191 	fp = (struct fs3270 *)view;
192 	fp->active = 0;
195 	if (!raw3270_request_final(fp->init))
199 	raw3270_request_set_cmd(fp->init, TC_RDBUF);
205 	fp->rdbuf->data[0] = dma64_add(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;
212 	fp->init->rc = raw3270_start_locked(view, fp->init);
213 	if (fp->init->rc)
214 		fp->init->callback(fp->init, NULL);
217 static void fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq,
222 		fp->attention = 1;
223 		wake_up(&fp->wait);
241 	struct fs3270 *fp;
248 	fp = filp->private_data;
249 	if (!fp)
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);
260 		rc = wait_event_interruptible(fp->wait, fp->attention);
261 		fp->attention = 0;
263 			rc = fs3270_do_io(&fp->view, rq);
286 	struct fs3270 *fp;
292 	fp = filp->private_data;
293 	if (!fp)
301 			write_command = fp->write_command ? : 1;
306 			rc = fs3270_do_io(&fp->view, rq);
326 	struct fs3270 *fp;
330 	fp = filp->private_data;
331 	if (!fp)
341 		fp->read_command = arg;
344 		fp->write_command = arg;
347 		rc = put_user(fp->read_command, argp);
350 		rc = put_user(fp->write_command, argp);
353 		iocb.model = fp->view.model;
354 		iocb.line_cnt = fp->view.rows;
355 		iocb.col_cnt = fp->view.cols;
372 	struct fs3270 *fp;
374 	fp = kzalloc(sizeof(*fp), GFP_KERNEL);
375 	if (!fp)
377 	fp->init = raw3270_request_alloc(0);
378 	if (IS_ERR(fp->init)) {
379 		kfree(fp);
382 	return fp;
390 	struct fs3270 *fp;
392 	fp = (struct fs3270 *)view;
393 	if (fp->rdbuf)
394 		idal_buffer_free(fp->rdbuf);
404 	struct fs3270 *fp;
406 	fp = (struct fs3270 *)view;
407 	if (fp->fs_pid)
408 		kill_pid(fp->fs_pid, SIGHUP, 1);
425 	struct fs3270 *fp;
445 	fp = (struct fs3270 *)raw3270_find_view(&fs3270_fn, minor);
446 	if (!IS_ERR(fp)) {
447 		raw3270_put_view(&fp->view);
452 	fp = fs3270_alloc_view();
453 	if (IS_ERR(fp)) {
454 		rc = PTR_ERR(fp);
458 	init_waitqueue_head(&fp->wait);
459 	fp->fs_pid = get_pid(task_pid(current));
460 	rc = raw3270_add_view(&fp->view, &fs3270_fn, minor,
463 		fs3270_free_view(&fp->view);
468 	ib = idal_buffer_alloc(2 * fp->view.rows * fp->view.cols + 5, 0);
470 		raw3270_put_view(&fp->view);
471 		raw3270_del_view(&fp->view);
475 	fp->rdbuf = ib;
477 	rc = raw3270_activate_view(&fp->view);
479 		raw3270_put_view(&fp->view);
480 		raw3270_del_view(&fp->view);
484 	filp->private_data = fp;
496 	struct fs3270 *fp;
498 	fp = filp->private_data;
500 	if (fp) {
501 		put_pid(fp->fs_pid);
502 		fp->fs_pid = NULL;
503 		raw3270_reset(&fp->view);
504 		raw3270_put_view(&fp->view);
505 		raw3270_del_view(&fp->view);