1 /*
2  *    Copyright IBM Corp. 2007, 2009
3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4  *		 Frank Pavlic <fpavlic@de.ibm.com>,
5  *		 Thomas Spatzier <tspat@de.ibm.com>,
6  *		 Frank Blaschka <frank.blaschka@de.ibm.com>
7  */
8 
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11 
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <net/iucv/af_iucv.h>
23 #include <net/dsfield.h>
24 
25 #include <asm/ebcdic.h>
26 #include <asm/chpid.h>
27 #include <asm/io.h>
28 #include <asm/sysinfo.h>
29 #include <asm/compat.h>
30 
31 #include "qeth_core.h"
32 
33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
34 	/* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
35 	/*                   N  P  A    M  L  V                      H  */
36 	[QETH_DBF_SETUP] = {"qeth_setup",
37 				8, 1,   8, 5, &debug_hex_ascii_view, NULL},
38 	[QETH_DBF_MSG]	 = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
39 			    &debug_sprintf_view, NULL},
40 	[QETH_DBF_CTRL]  = {"qeth_control",
41 		8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
42 };
43 EXPORT_SYMBOL_GPL(qeth_dbf);
44 
45 struct qeth_card_list_struct qeth_core_card_list;
46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
47 struct kmem_cache *qeth_core_header_cache;
48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
49 static struct kmem_cache *qeth_qdio_outbuf_cache;
50 
51 static struct device *qeth_core_root_dev;
52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
53 static struct lock_class_key qdio_out_skb_queue_key;
54 static struct mutex qeth_mod_mutex;
55 
56 static void qeth_send_control_data_cb(struct qeth_channel *,
57 			struct qeth_cmd_buffer *);
58 static int qeth_issue_next_read(struct qeth_card *);
59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
61 static void qeth_free_buffer_pool(struct qeth_card *);
62 static int qeth_qdio_establish(struct qeth_card *);
63 static void qeth_free_qdio_buffers(struct qeth_card *);
64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
65 		struct qeth_qdio_out_buffer *buf,
66 		enum iucv_tx_notify notification);
67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
69 		struct qeth_qdio_out_buffer *buf,
70 		enum qeth_qdio_buffer_states newbufstate);
71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
72 
73 struct workqueue_struct *qeth_wq;
74 EXPORT_SYMBOL_GPL(qeth_wq);
75 
76 int qeth_card_hw_is_reachable(struct qeth_card *card)
77 {
78 	return (card->state == CARD_STATE_SOFTSETUP) ||
79 		(card->state == CARD_STATE_UP);
80 }
81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
82 
83 static void qeth_close_dev_handler(struct work_struct *work)
84 {
85 	struct qeth_card *card;
86 
87 	card = container_of(work, struct qeth_card, close_dev_work);
88 	QETH_CARD_TEXT(card, 2, "cldevhdl");
89 	rtnl_lock();
90 	dev_close(card->dev);
91 	rtnl_unlock();
92 	ccwgroup_set_offline(card->gdev);
93 }
94 
95 void qeth_close_dev(struct qeth_card *card)
96 {
97 	QETH_CARD_TEXT(card, 2, "cldevsubm");
98 	queue_work(qeth_wq, &card->close_dev_work);
99 }
100 EXPORT_SYMBOL_GPL(qeth_close_dev);
101 
102 static inline const char *qeth_get_cardname(struct qeth_card *card)
103 {
104 	if (card->info.guestlan) {
105 		switch (card->info.type) {
106 		case QETH_CARD_TYPE_OSD:
107 			return " Virtual NIC QDIO";
108 		case QETH_CARD_TYPE_IQD:
109 			return " Virtual NIC Hiper";
110 		case QETH_CARD_TYPE_OSM:
111 			return " Virtual NIC QDIO - OSM";
112 		case QETH_CARD_TYPE_OSX:
113 			return " Virtual NIC QDIO - OSX";
114 		default:
115 			return " unknown";
116 		}
117 	} else {
118 		switch (card->info.type) {
119 		case QETH_CARD_TYPE_OSD:
120 			return " OSD Express";
121 		case QETH_CARD_TYPE_IQD:
122 			return " HiperSockets";
123 		case QETH_CARD_TYPE_OSN:
124 			return " OSN QDIO";
125 		case QETH_CARD_TYPE_OSM:
126 			return " OSM QDIO";
127 		case QETH_CARD_TYPE_OSX:
128 			return " OSX QDIO";
129 		default:
130 			return " unknown";
131 		}
132 	}
133 	return " n/a";
134 }
135 
136 /* max length to be returned: 14 */
137 const char *qeth_get_cardname_short(struct qeth_card *card)
138 {
139 	if (card->info.guestlan) {
140 		switch (card->info.type) {
141 		case QETH_CARD_TYPE_OSD:
142 			return "Virt.NIC QDIO";
143 		case QETH_CARD_TYPE_IQD:
144 			return "Virt.NIC Hiper";
145 		case QETH_CARD_TYPE_OSM:
146 			return "Virt.NIC OSM";
147 		case QETH_CARD_TYPE_OSX:
148 			return "Virt.NIC OSX";
149 		default:
150 			return "unknown";
151 		}
152 	} else {
153 		switch (card->info.type) {
154 		case QETH_CARD_TYPE_OSD:
155 			switch (card->info.link_type) {
156 			case QETH_LINK_TYPE_FAST_ETH:
157 				return "OSD_100";
158 			case QETH_LINK_TYPE_HSTR:
159 				return "HSTR";
160 			case QETH_LINK_TYPE_GBIT_ETH:
161 				return "OSD_1000";
162 			case QETH_LINK_TYPE_10GBIT_ETH:
163 				return "OSD_10GIG";
164 			case QETH_LINK_TYPE_LANE_ETH100:
165 				return "OSD_FE_LANE";
166 			case QETH_LINK_TYPE_LANE_TR:
167 				return "OSD_TR_LANE";
168 			case QETH_LINK_TYPE_LANE_ETH1000:
169 				return "OSD_GbE_LANE";
170 			case QETH_LINK_TYPE_LANE:
171 				return "OSD_ATM_LANE";
172 			default:
173 				return "OSD_Express";
174 			}
175 		case QETH_CARD_TYPE_IQD:
176 			return "HiperSockets";
177 		case QETH_CARD_TYPE_OSN:
178 			return "OSN";
179 		case QETH_CARD_TYPE_OSM:
180 			return "OSM_1000";
181 		case QETH_CARD_TYPE_OSX:
182 			return "OSX_10GIG";
183 		default:
184 			return "unknown";
185 		}
186 	}
187 	return "n/a";
188 }
189 
190 void qeth_set_recovery_task(struct qeth_card *card)
191 {
192 	card->recovery_task = current;
193 }
194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
195 
196 void qeth_clear_recovery_task(struct qeth_card *card)
197 {
198 	card->recovery_task = NULL;
199 }
200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
201 
202 static bool qeth_is_recovery_task(const struct qeth_card *card)
203 {
204 	return card->recovery_task == current;
205 }
206 
207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
208 			 int clear_start_mask)
209 {
210 	unsigned long flags;
211 
212 	spin_lock_irqsave(&card->thread_mask_lock, flags);
213 	card->thread_allowed_mask = threads;
214 	if (clear_start_mask)
215 		card->thread_start_mask &= threads;
216 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
217 	wake_up(&card->wait_q);
218 }
219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
220 
221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
222 {
223 	unsigned long flags;
224 	int rc = 0;
225 
226 	spin_lock_irqsave(&card->thread_mask_lock, flags);
227 	rc = (card->thread_running_mask & threads);
228 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
229 	return rc;
230 }
231 EXPORT_SYMBOL_GPL(qeth_threads_running);
232 
233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
234 {
235 	if (qeth_is_recovery_task(card))
236 		return 0;
237 	return wait_event_interruptible(card->wait_q,
238 			qeth_threads_running(card, threads) == 0);
239 }
240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
241 
242 void qeth_clear_working_pool_list(struct qeth_card *card)
243 {
244 	struct qeth_buffer_pool_entry *pool_entry, *tmp;
245 
246 	QETH_CARD_TEXT(card, 5, "clwrklst");
247 	list_for_each_entry_safe(pool_entry, tmp,
248 			    &card->qdio.in_buf_pool.entry_list, list){
249 			list_del(&pool_entry->list);
250 	}
251 }
252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
253 
254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
255 {
256 	struct qeth_buffer_pool_entry *pool_entry;
257 	void *ptr;
258 	int i, j;
259 
260 	QETH_CARD_TEXT(card, 5, "alocpool");
261 	for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
262 		pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
263 		if (!pool_entry) {
264 			qeth_free_buffer_pool(card);
265 			return -ENOMEM;
266 		}
267 		for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
268 			ptr = (void *) __get_free_page(GFP_KERNEL);
269 			if (!ptr) {
270 				while (j > 0)
271 					free_page((unsigned long)
272 						  pool_entry->elements[--j]);
273 				kfree(pool_entry);
274 				qeth_free_buffer_pool(card);
275 				return -ENOMEM;
276 			}
277 			pool_entry->elements[j] = ptr;
278 		}
279 		list_add(&pool_entry->init_list,
280 			 &card->qdio.init_pool.entry_list);
281 	}
282 	return 0;
283 }
284 
285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
286 {
287 	QETH_CARD_TEXT(card, 2, "realcbp");
288 
289 	if ((card->state != CARD_STATE_DOWN) &&
290 	    (card->state != CARD_STATE_RECOVER))
291 		return -EPERM;
292 
293 	/* TODO: steel/add buffers from/to a running card's buffer pool (?) */
294 	qeth_clear_working_pool_list(card);
295 	qeth_free_buffer_pool(card);
296 	card->qdio.in_buf_pool.buf_count = bufcnt;
297 	card->qdio.init_pool.buf_count = bufcnt;
298 	return qeth_alloc_buffer_pool(card);
299 }
300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
301 
302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
303 {
304 	if (!q)
305 		return;
306 
307 	qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
308 	kfree(q);
309 }
310 
311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
312 {
313 	struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
314 	int i;
315 
316 	if (!q)
317 		return NULL;
318 
319 	if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
320 		kfree(q);
321 		return NULL;
322 	}
323 
324 	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
325 		q->bufs[i].buffer = q->qdio_bufs[i];
326 
327 	QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
328 	return q;
329 }
330 
331 static inline int qeth_cq_init(struct qeth_card *card)
332 {
333 	int rc;
334 
335 	if (card->options.cq == QETH_CQ_ENABLED) {
336 		QETH_DBF_TEXT(SETUP, 2, "cqinit");
337 		qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
338 				   QDIO_MAX_BUFFERS_PER_Q);
339 		card->qdio.c_q->next_buf_to_init = 127;
340 		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
341 			     card->qdio.no_in_queues - 1, 0,
342 			     127);
343 		if (rc) {
344 			QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
345 			goto out;
346 		}
347 	}
348 	rc = 0;
349 out:
350 	return rc;
351 }
352 
353 static inline int qeth_alloc_cq(struct qeth_card *card)
354 {
355 	int rc;
356 
357 	if (card->options.cq == QETH_CQ_ENABLED) {
358 		int i;
359 		struct qdio_outbuf_state *outbuf_states;
360 
361 		QETH_DBF_TEXT(SETUP, 2, "cqon");
362 		card->qdio.c_q = qeth_alloc_qdio_queue();
363 		if (!card->qdio.c_q) {
364 			rc = -1;
365 			goto kmsg_out;
366 		}
367 		card->qdio.no_in_queues = 2;
368 		card->qdio.out_bufstates =
369 			kzalloc(card->qdio.no_out_queues *
370 				QDIO_MAX_BUFFERS_PER_Q *
371 				sizeof(struct qdio_outbuf_state), GFP_KERNEL);
372 		outbuf_states = card->qdio.out_bufstates;
373 		if (outbuf_states == NULL) {
374 			rc = -1;
375 			goto free_cq_out;
376 		}
377 		for (i = 0; i < card->qdio.no_out_queues; ++i) {
378 			card->qdio.out_qs[i]->bufstates = outbuf_states;
379 			outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
380 		}
381 	} else {
382 		QETH_DBF_TEXT(SETUP, 2, "nocq");
383 		card->qdio.c_q = NULL;
384 		card->qdio.no_in_queues = 1;
385 	}
386 	QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
387 	rc = 0;
388 out:
389 	return rc;
390 free_cq_out:
391 	qeth_free_qdio_queue(card->qdio.c_q);
392 	card->qdio.c_q = NULL;
393 kmsg_out:
394 	dev_err(&card->gdev->dev, "Failed to create completion queue\n");
395 	goto out;
396 }
397 
398 static inline void qeth_free_cq(struct qeth_card *card)
399 {
400 	if (card->qdio.c_q) {
401 		--card->qdio.no_in_queues;
402 		qeth_free_qdio_queue(card->qdio.c_q);
403 		card->qdio.c_q = NULL;
404 	}
405 	kfree(card->qdio.out_bufstates);
406 	card->qdio.out_bufstates = NULL;
407 }
408 
409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 	int delayed) {
411 	enum iucv_tx_notify n;
412 
413 	switch (sbalf15) {
414 	case 0:
415 		n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
416 		break;
417 	case 4:
418 	case 16:
419 	case 17:
420 	case 18:
421 		n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
422 			TX_NOTIFY_UNREACHABLE;
423 		break;
424 	default:
425 		n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
426 			TX_NOTIFY_GENERALERROR;
427 		break;
428 	}
429 
430 	return n;
431 }
432 
433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
434 	int bidx, int forced_cleanup)
435 {
436 	if (q->card->options.cq != QETH_CQ_ENABLED)
437 		return;
438 
439 	if (q->bufs[bidx]->next_pending != NULL) {
440 		struct qeth_qdio_out_buffer *head = q->bufs[bidx];
441 		struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
442 
443 		while (c) {
444 			if (forced_cleanup ||
445 			    atomic_read(&c->state) ==
446 			      QETH_QDIO_BUF_HANDLED_DELAYED) {
447 				struct qeth_qdio_out_buffer *f = c;
448 				QETH_CARD_TEXT(f->q->card, 5, "fp");
449 				QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
450 				/* release here to avoid interleaving between
451 				   outbound tasklet and inbound tasklet
452 				   regarding notifications and lifecycle */
453 				qeth_release_skbs(c);
454 
455 				c = f->next_pending;
456 				WARN_ON_ONCE(head->next_pending != f);
457 				head->next_pending = c;
458 				kmem_cache_free(qeth_qdio_outbuf_cache, f);
459 			} else {
460 				head = c;
461 				c = c->next_pending;
462 			}
463 
464 		}
465 	}
466 	if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
467 					QETH_QDIO_BUF_HANDLED_DELAYED)) {
468 		/* for recovery situations */
469 		q->bufs[bidx]->aob = q->bufstates[bidx].aob;
470 		qeth_init_qdio_out_buf(q, bidx);
471 		QETH_CARD_TEXT(q->card, 2, "clprecov");
472 	}
473 }
474 
475 
476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
477 		unsigned long phys_aob_addr) {
478 	struct qaob *aob;
479 	struct qeth_qdio_out_buffer *buffer;
480 	enum iucv_tx_notify notification;
481 
482 	aob = (struct qaob *) phys_to_virt(phys_aob_addr);
483 	QETH_CARD_TEXT(card, 5, "haob");
484 	QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
485 	buffer = (struct qeth_qdio_out_buffer *) aob->user1;
486 	QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
487 
488 	if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
489 			   QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
490 		notification = TX_NOTIFY_OK;
491 	} else {
492 		WARN_ON_ONCE(atomic_read(&buffer->state) !=
493 							QETH_QDIO_BUF_PENDING);
494 		atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
495 		notification = TX_NOTIFY_DELAYED_OK;
496 	}
497 
498 	if (aob->aorc != 0)  {
499 		QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
500 		notification = qeth_compute_cq_notification(aob->aorc, 1);
501 	}
502 	qeth_notify_skbs(buffer->q, buffer, notification);
503 
504 	buffer->aob = NULL;
505 	qeth_clear_output_buffer(buffer->q, buffer,
506 				 QETH_QDIO_BUF_HANDLED_DELAYED);
507 
508 	/* from here on: do not touch buffer anymore */
509 	qdio_release_aob(aob);
510 }
511 
512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
513 {
514 	return card->options.cq == QETH_CQ_ENABLED &&
515 	    card->qdio.c_q != NULL &&
516 	    queue != 0 &&
517 	    queue == card->qdio.no_in_queues - 1;
518 }
519 
520 
521 static int qeth_issue_next_read(struct qeth_card *card)
522 {
523 	int rc;
524 	struct qeth_cmd_buffer *iob;
525 
526 	QETH_CARD_TEXT(card, 5, "issnxrd");
527 	if (card->read.state != CH_STATE_UP)
528 		return -EIO;
529 	iob = qeth_get_buffer(&card->read);
530 	if (!iob) {
531 		dev_warn(&card->gdev->dev, "The qeth device driver "
532 			"failed to recover an error on the device\n");
533 		QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
534 			"available\n", dev_name(&card->gdev->dev));
535 		return -ENOMEM;
536 	}
537 	qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
538 	QETH_CARD_TEXT(card, 6, "noirqpnd");
539 	rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
540 			      (addr_t) iob, 0, 0);
541 	if (rc) {
542 		QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
543 			"rc=%i\n", dev_name(&card->gdev->dev), rc);
544 		atomic_set(&card->read.irq_pending, 0);
545 		card->read_or_write_problem = 1;
546 		qeth_schedule_recovery(card);
547 		wake_up(&card->wait_q);
548 	}
549 	return rc;
550 }
551 
552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
553 {
554 	struct qeth_reply *reply;
555 
556 	reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
557 	if (reply) {
558 		atomic_set(&reply->refcnt, 1);
559 		atomic_set(&reply->received, 0);
560 		reply->card = card;
561 	}
562 	return reply;
563 }
564 
565 static void qeth_get_reply(struct qeth_reply *reply)
566 {
567 	WARN_ON(atomic_read(&reply->refcnt) <= 0);
568 	atomic_inc(&reply->refcnt);
569 }
570 
571 static void qeth_put_reply(struct qeth_reply *reply)
572 {
573 	WARN_ON(atomic_read(&reply->refcnt) <= 0);
574 	if (atomic_dec_and_test(&reply->refcnt))
575 		kfree(reply);
576 }
577 
578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
579 		struct qeth_card *card)
580 {
581 	char *ipa_name;
582 	int com = cmd->hdr.command;
583 	ipa_name = qeth_get_ipa_cmd_name(com);
584 	if (rc)
585 		QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
586 				"x%X \"%s\"\n",
587 				ipa_name, com, dev_name(&card->gdev->dev),
588 				QETH_CARD_IFNAME(card), rc,
589 				qeth_get_ipa_msg(rc));
590 	else
591 		QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
592 				ipa_name, com, dev_name(&card->gdev->dev),
593 				QETH_CARD_IFNAME(card));
594 }
595 
596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
597 		struct qeth_cmd_buffer *iob)
598 {
599 	struct qeth_ipa_cmd *cmd = NULL;
600 
601 	QETH_CARD_TEXT(card, 5, "chkipad");
602 	if (IS_IPA(iob->data)) {
603 		cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
604 		if (IS_IPA_REPLY(cmd)) {
605 			if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 			    cmd->hdr.command != IPA_CMD_DELCCID &&
607 			    cmd->hdr.command != IPA_CMD_MODCCID &&
608 			    cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 				qeth_issue_ipa_msg(cmd,
610 						cmd->hdr.return_code, card);
611 			return cmd;
612 		} else {
613 			switch (cmd->hdr.command) {
614 			case IPA_CMD_STOPLAN:
615 				if (cmd->hdr.return_code ==
616 						IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 					dev_err(&card->gdev->dev,
618 					   "Interface %s is down because the "
619 					   "adjacent port is no longer in "
620 					   "reflective relay mode\n",
621 					   QETH_CARD_IFNAME(card));
622 					qeth_close_dev(card);
623 				} else {
624 					dev_warn(&card->gdev->dev,
625 					   "The link for interface %s on CHPID"
626 					   " 0x%X failed\n",
627 					   QETH_CARD_IFNAME(card),
628 					   card->info.chpid);
629 					qeth_issue_ipa_msg(cmd,
630 						cmd->hdr.return_code, card);
631 				}
632 				card->lan_online = 0;
633 				if (card->dev && netif_carrier_ok(card->dev))
634 					netif_carrier_off(card->dev);
635 				return NULL;
636 			case IPA_CMD_STARTLAN:
637 				dev_info(&card->gdev->dev,
638 					   "The link for %s on CHPID 0x%X has"
639 					   " been restored\n",
640 					   QETH_CARD_IFNAME(card),
641 					   card->info.chpid);
642 				netif_carrier_on(card->dev);
643 				card->lan_online = 1;
644 				if (card->info.hwtrap)
645 					card->info.hwtrap = 2;
646 				qeth_schedule_recovery(card);
647 				return NULL;
648 			case IPA_CMD_SETBRIDGEPORT:
649 			case IPA_CMD_ADDRESS_CHANGE_NOTIF:
650 				if (card->discipline->control_event_handler
651 								(card, cmd))
652 					return cmd;
653 				else
654 					return NULL;
655 			case IPA_CMD_MODCCID:
656 				return cmd;
657 			case IPA_CMD_REGISTER_LOCAL_ADDR:
658 				QETH_CARD_TEXT(card, 3, "irla");
659 				break;
660 			case IPA_CMD_UNREGISTER_LOCAL_ADDR:
661 				QETH_CARD_TEXT(card, 3, "urla");
662 				break;
663 			default:
664 				QETH_DBF_MESSAGE(2, "Received data is IPA "
665 					   "but not a reply!\n");
666 				break;
667 			}
668 		}
669 	}
670 	return cmd;
671 }
672 
673 void qeth_clear_ipacmd_list(struct qeth_card *card)
674 {
675 	struct qeth_reply *reply, *r;
676 	unsigned long flags;
677 
678 	QETH_CARD_TEXT(card, 4, "clipalst");
679 
680 	spin_lock_irqsave(&card->lock, flags);
681 	list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
682 		qeth_get_reply(reply);
683 		reply->rc = -EIO;
684 		atomic_inc(&reply->received);
685 		list_del_init(&reply->list);
686 		wake_up(&reply->wait_q);
687 		qeth_put_reply(reply);
688 	}
689 	spin_unlock_irqrestore(&card->lock, flags);
690 	atomic_set(&card->write.irq_pending, 0);
691 }
692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
693 
694 static int qeth_check_idx_response(struct qeth_card *card,
695 	unsigned char *buffer)
696 {
697 	if (!buffer)
698 		return 0;
699 
700 	QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
701 	if ((buffer[2] & 0xc0) == 0xc0) {
702 		QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
703 			   "with cause code 0x%02x%s\n",
704 			   buffer[4],
705 			   ((buffer[4] == 0x22) ?
706 			    " -- try another portname" : ""));
707 		QETH_CARD_TEXT(card, 2, "ckidxres");
708 		QETH_CARD_TEXT(card, 2, " idxterm");
709 		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
710 		if (buffer[4] == 0xf6) {
711 			dev_err(&card->gdev->dev,
712 			"The qeth device is not configured "
713 			"for the OSI layer required by z/VM\n");
714 			return -EPERM;
715 		}
716 		return -EIO;
717 	}
718 	return 0;
719 }
720 
721 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
722 {
723 	struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
724 		dev_get_drvdata(&cdev->dev))->dev);
725 	return card;
726 }
727 
728 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
729 		__u32 len)
730 {
731 	struct qeth_card *card;
732 
733 	card = CARD_FROM_CDEV(channel->ccwdev);
734 	QETH_CARD_TEXT(card, 4, "setupccw");
735 	if (channel == &card->read)
736 		memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
737 	else
738 		memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
739 	channel->ccw.count = len;
740 	channel->ccw.cda = (__u32) __pa(iob);
741 }
742 
743 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
744 {
745 	__u8 index;
746 
747 	QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
748 	index = channel->io_buf_no;
749 	do {
750 		if (channel->iob[index].state == BUF_STATE_FREE) {
751 			channel->iob[index].state = BUF_STATE_LOCKED;
752 			channel->io_buf_no = (channel->io_buf_no + 1) %
753 				QETH_CMD_BUFFER_NO;
754 			memset(channel->iob[index].data, 0, QETH_BUFSIZE);
755 			return channel->iob + index;
756 		}
757 		index = (index + 1) % QETH_CMD_BUFFER_NO;
758 	} while (index != channel->io_buf_no);
759 
760 	return NULL;
761 }
762 
763 void qeth_release_buffer(struct qeth_channel *channel,
764 		struct qeth_cmd_buffer *iob)
765 {
766 	unsigned long flags;
767 
768 	QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
769 	spin_lock_irqsave(&channel->iob_lock, flags);
770 	memset(iob->data, 0, QETH_BUFSIZE);
771 	iob->state = BUF_STATE_FREE;
772 	iob->callback = qeth_send_control_data_cb;
773 	iob->rc = 0;
774 	spin_unlock_irqrestore(&channel->iob_lock, flags);
775 	wake_up(&channel->wait_q);
776 }
777 EXPORT_SYMBOL_GPL(qeth_release_buffer);
778 
779 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
780 {
781 	struct qeth_cmd_buffer *buffer = NULL;
782 	unsigned long flags;
783 
784 	spin_lock_irqsave(&channel->iob_lock, flags);
785 	buffer = __qeth_get_buffer(channel);
786 	spin_unlock_irqrestore(&channel->iob_lock, flags);
787 	return buffer;
788 }
789 
790 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
791 {
792 	struct qeth_cmd_buffer *buffer;
793 	wait_event(channel->wait_q,
794 		   ((buffer = qeth_get_buffer(channel)) != NULL));
795 	return buffer;
796 }
797 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
798 
799 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
800 {
801 	int cnt;
802 
803 	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
804 		qeth_release_buffer(channel, &channel->iob[cnt]);
805 	channel->buf_no = 0;
806 	channel->io_buf_no = 0;
807 }
808 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
809 
810 static void qeth_send_control_data_cb(struct qeth_channel *channel,
811 		  struct qeth_cmd_buffer *iob)
812 {
813 	struct qeth_card *card;
814 	struct qeth_reply *reply, *r;
815 	struct qeth_ipa_cmd *cmd;
816 	unsigned long flags;
817 	int keep_reply;
818 	int rc = 0;
819 
820 	card = CARD_FROM_CDEV(channel->ccwdev);
821 	QETH_CARD_TEXT(card, 4, "sndctlcb");
822 	rc = qeth_check_idx_response(card, iob->data);
823 	switch (rc) {
824 	case 0:
825 		break;
826 	case -EIO:
827 		qeth_clear_ipacmd_list(card);
828 		qeth_schedule_recovery(card);
829 		/* fall through */
830 	default:
831 		goto out;
832 	}
833 
834 	cmd = qeth_check_ipa_data(card, iob);
835 	if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
836 		goto out;
837 	/*in case of OSN : check if cmd is set */
838 	if (card->info.type == QETH_CARD_TYPE_OSN &&
839 	    cmd &&
840 	    cmd->hdr.command != IPA_CMD_STARTLAN &&
841 	    card->osn_info.assist_cb != NULL) {
842 		card->osn_info.assist_cb(card->dev, cmd);
843 		goto out;
844 	}
845 
846 	spin_lock_irqsave(&card->lock, flags);
847 	list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
848 		if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
849 		    ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
850 			qeth_get_reply(reply);
851 			list_del_init(&reply->list);
852 			spin_unlock_irqrestore(&card->lock, flags);
853 			keep_reply = 0;
854 			if (reply->callback != NULL) {
855 				if (cmd) {
856 					reply->offset = (__u16)((char *)cmd -
857 							(char *)iob->data);
858 					keep_reply = reply->callback(card,
859 							reply,
860 							(unsigned long)cmd);
861 				} else
862 					keep_reply = reply->callback(card,
863 							reply,
864 							(unsigned long)iob);
865 			}
866 			if (cmd)
867 				reply->rc = (u16) cmd->hdr.return_code;
868 			else if (iob->rc)
869 				reply->rc = iob->rc;
870 			if (keep_reply) {
871 				spin_lock_irqsave(&card->lock, flags);
872 				list_add_tail(&reply->list,
873 					      &card->cmd_waiter_list);
874 				spin_unlock_irqrestore(&card->lock, flags);
875 			} else {
876 				atomic_inc(&reply->received);
877 				wake_up(&reply->wait_q);
878 			}
879 			qeth_put_reply(reply);
880 			goto out;
881 		}
882 	}
883 	spin_unlock_irqrestore(&card->lock, flags);
884 out:
885 	memcpy(&card->seqno.pdu_hdr_ack,
886 		QETH_PDU_HEADER_SEQ_NO(iob->data),
887 		QETH_SEQ_NO_LENGTH);
888 	qeth_release_buffer(channel, iob);
889 }
890 
891 static int qeth_setup_channel(struct qeth_channel *channel)
892 {
893 	int cnt;
894 
895 	QETH_DBF_TEXT(SETUP, 2, "setupch");
896 	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
897 		channel->iob[cnt].data =
898 			kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
899 		if (channel->iob[cnt].data == NULL)
900 			break;
901 		channel->iob[cnt].state = BUF_STATE_FREE;
902 		channel->iob[cnt].channel = channel;
903 		channel->iob[cnt].callback = qeth_send_control_data_cb;
904 		channel->iob[cnt].rc = 0;
905 	}
906 	if (cnt < QETH_CMD_BUFFER_NO) {
907 		while (cnt-- > 0)
908 			kfree(channel->iob[cnt].data);
909 		return -ENOMEM;
910 	}
911 	channel->buf_no = 0;
912 	channel->io_buf_no = 0;
913 	atomic_set(&channel->irq_pending, 0);
914 	spin_lock_init(&channel->iob_lock);
915 
916 	init_waitqueue_head(&channel->wait_q);
917 	return 0;
918 }
919 
920 static int qeth_set_thread_start_bit(struct qeth_card *card,
921 		unsigned long thread)
922 {
923 	unsigned long flags;
924 
925 	spin_lock_irqsave(&card->thread_mask_lock, flags);
926 	if (!(card->thread_allowed_mask & thread) ||
927 	      (card->thread_start_mask & thread)) {
928 		spin_unlock_irqrestore(&card->thread_mask_lock, flags);
929 		return -EPERM;
930 	}
931 	card->thread_start_mask |= thread;
932 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
933 	return 0;
934 }
935 
936 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
937 {
938 	unsigned long flags;
939 
940 	spin_lock_irqsave(&card->thread_mask_lock, flags);
941 	card->thread_start_mask &= ~thread;
942 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
943 	wake_up(&card->wait_q);
944 }
945 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
946 
947 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
948 {
949 	unsigned long flags;
950 
951 	spin_lock_irqsave(&card->thread_mask_lock, flags);
952 	card->thread_running_mask &= ~thread;
953 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
954 	wake_up(&card->wait_q);
955 }
956 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
957 
958 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
959 {
960 	unsigned long flags;
961 	int rc = 0;
962 
963 	spin_lock_irqsave(&card->thread_mask_lock, flags);
964 	if (card->thread_start_mask & thread) {
965 		if ((card->thread_allowed_mask & thread) &&
966 		    !(card->thread_running_mask & thread)) {
967 			rc = 1;
968 			card->thread_start_mask &= ~thread;
969 			card->thread_running_mask |= thread;
970 		} else
971 			rc = -EPERM;
972 	}
973 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
974 	return rc;
975 }
976 
977 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
978 {
979 	int rc = 0;
980 
981 	wait_event(card->wait_q,
982 		   (rc = __qeth_do_run_thread(card, thread)) >= 0);
983 	return rc;
984 }
985 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
986 
987 void qeth_schedule_recovery(struct qeth_card *card)
988 {
989 	QETH_CARD_TEXT(card, 2, "startrec");
990 	if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
991 		schedule_work(&card->kernel_thread_starter);
992 }
993 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
994 
995 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
996 {
997 	int dstat, cstat;
998 	char *sense;
999 	struct qeth_card *card;
1000 
1001 	sense = (char *) irb->ecw;
1002 	cstat = irb->scsw.cmd.cstat;
1003 	dstat = irb->scsw.cmd.dstat;
1004 	card = CARD_FROM_CDEV(cdev);
1005 
1006 	if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1007 		     SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1008 		     SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1009 		QETH_CARD_TEXT(card, 2, "CGENCHK");
1010 		dev_warn(&cdev->dev, "The qeth device driver "
1011 			"failed to recover an error on the device\n");
1012 		QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1013 			dev_name(&cdev->dev), dstat, cstat);
1014 		print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1015 				16, 1, irb, 64, 1);
1016 		return 1;
1017 	}
1018 
1019 	if (dstat & DEV_STAT_UNIT_CHECK) {
1020 		if (sense[SENSE_RESETTING_EVENT_BYTE] &
1021 		    SENSE_RESETTING_EVENT_FLAG) {
1022 			QETH_CARD_TEXT(card, 2, "REVIND");
1023 			return 1;
1024 		}
1025 		if (sense[SENSE_COMMAND_REJECT_BYTE] &
1026 		    SENSE_COMMAND_REJECT_FLAG) {
1027 			QETH_CARD_TEXT(card, 2, "CMDREJi");
1028 			return 1;
1029 		}
1030 		if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1031 			QETH_CARD_TEXT(card, 2, "AFFE");
1032 			return 1;
1033 		}
1034 		if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1035 			QETH_CARD_TEXT(card, 2, "ZEROSEN");
1036 			return 0;
1037 		}
1038 		QETH_CARD_TEXT(card, 2, "DGENCHK");
1039 			return 1;
1040 	}
1041 	return 0;
1042 }
1043 
1044 static long __qeth_check_irb_error(struct ccw_device *cdev,
1045 		unsigned long intparm, struct irb *irb)
1046 {
1047 	struct qeth_card *card;
1048 
1049 	card = CARD_FROM_CDEV(cdev);
1050 
1051 	if (!card || !IS_ERR(irb))
1052 		return 0;
1053 
1054 	switch (PTR_ERR(irb)) {
1055 	case -EIO:
1056 		QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1057 			dev_name(&cdev->dev));
1058 		QETH_CARD_TEXT(card, 2, "ckirberr");
1059 		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1060 		break;
1061 	case -ETIMEDOUT:
1062 		dev_warn(&cdev->dev, "A hardware operation timed out"
1063 			" on the device\n");
1064 		QETH_CARD_TEXT(card, 2, "ckirberr");
1065 		QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1066 		if (intparm == QETH_RCD_PARM) {
1067 			if (card->data.ccwdev == cdev) {
1068 				card->data.state = CH_STATE_DOWN;
1069 				wake_up(&card->wait_q);
1070 			}
1071 		}
1072 		break;
1073 	default:
1074 		QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1075 			dev_name(&cdev->dev), PTR_ERR(irb));
1076 		QETH_CARD_TEXT(card, 2, "ckirberr");
1077 		QETH_CARD_TEXT(card, 2, "  rc???");
1078 	}
1079 	return PTR_ERR(irb);
1080 }
1081 
1082 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1083 		struct irb *irb)
1084 {
1085 	int rc;
1086 	int cstat, dstat;
1087 	struct qeth_cmd_buffer *buffer;
1088 	struct qeth_channel *channel;
1089 	struct qeth_card *card;
1090 	struct qeth_cmd_buffer *iob;
1091 	__u8 index;
1092 
1093 	if (__qeth_check_irb_error(cdev, intparm, irb))
1094 		return;
1095 	cstat = irb->scsw.cmd.cstat;
1096 	dstat = irb->scsw.cmd.dstat;
1097 
1098 	card = CARD_FROM_CDEV(cdev);
1099 	if (!card)
1100 		return;
1101 
1102 	QETH_CARD_TEXT(card, 5, "irq");
1103 
1104 	if (card->read.ccwdev == cdev) {
1105 		channel = &card->read;
1106 		QETH_CARD_TEXT(card, 5, "read");
1107 	} else if (card->write.ccwdev == cdev) {
1108 		channel = &card->write;
1109 		QETH_CARD_TEXT(card, 5, "write");
1110 	} else {
1111 		channel = &card->data;
1112 		QETH_CARD_TEXT(card, 5, "data");
1113 	}
1114 	atomic_set(&channel->irq_pending, 0);
1115 
1116 	if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1117 		channel->state = CH_STATE_STOPPED;
1118 
1119 	if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1120 		channel->state = CH_STATE_HALTED;
1121 
1122 	/*let's wake up immediately on data channel*/
1123 	if ((channel == &card->data) && (intparm != 0) &&
1124 	    (intparm != QETH_RCD_PARM))
1125 		goto out;
1126 
1127 	if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1128 		QETH_CARD_TEXT(card, 6, "clrchpar");
1129 		/* we don't have to handle this further */
1130 		intparm = 0;
1131 	}
1132 	if (intparm == QETH_HALT_CHANNEL_PARM) {
1133 		QETH_CARD_TEXT(card, 6, "hltchpar");
1134 		/* we don't have to handle this further */
1135 		intparm = 0;
1136 	}
1137 	if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1138 	    (dstat & DEV_STAT_UNIT_CHECK) ||
1139 	    (cstat)) {
1140 		if (irb->esw.esw0.erw.cons) {
1141 			dev_warn(&channel->ccwdev->dev,
1142 				"The qeth device driver failed to recover "
1143 				"an error on the device\n");
1144 			QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1145 				"0x%X dstat 0x%X\n",
1146 				dev_name(&channel->ccwdev->dev), cstat, dstat);
1147 			print_hex_dump(KERN_WARNING, "qeth: irb ",
1148 				DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1149 			print_hex_dump(KERN_WARNING, "qeth: sense data ",
1150 				DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1151 		}
1152 		if (intparm == QETH_RCD_PARM) {
1153 			channel->state = CH_STATE_DOWN;
1154 			goto out;
1155 		}
1156 		rc = qeth_get_problem(cdev, irb);
1157 		if (rc) {
1158 			qeth_clear_ipacmd_list(card);
1159 			qeth_schedule_recovery(card);
1160 			goto out;
1161 		}
1162 	}
1163 
1164 	if (intparm == QETH_RCD_PARM) {
1165 		channel->state = CH_STATE_RCD_DONE;
1166 		goto out;
1167 	}
1168 	if (intparm) {
1169 		buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1170 		buffer->state = BUF_STATE_PROCESSED;
1171 	}
1172 	if (channel == &card->data)
1173 		return;
1174 	if (channel == &card->read &&
1175 	    channel->state == CH_STATE_UP)
1176 		qeth_issue_next_read(card);
1177 
1178 	iob = channel->iob;
1179 	index = channel->buf_no;
1180 	while (iob[index].state == BUF_STATE_PROCESSED) {
1181 		if (iob[index].callback != NULL)
1182 			iob[index].callback(channel, iob + index);
1183 
1184 		index = (index + 1) % QETH_CMD_BUFFER_NO;
1185 	}
1186 	channel->buf_no = index;
1187 out:
1188 	wake_up(&card->wait_q);
1189 	return;
1190 }
1191 
1192 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1193 		struct qeth_qdio_out_buffer *buf,
1194 		enum iucv_tx_notify notification)
1195 {
1196 	struct sk_buff *skb;
1197 
1198 	if (skb_queue_empty(&buf->skb_list))
1199 		goto out;
1200 	skb = skb_peek(&buf->skb_list);
1201 	while (skb) {
1202 		QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1203 		QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1204 		if (skb->protocol == ETH_P_AF_IUCV) {
1205 			if (skb->sk) {
1206 				struct iucv_sock *iucv = iucv_sk(skb->sk);
1207 				iucv->sk_txnotify(skb, notification);
1208 			}
1209 		}
1210 		if (skb_queue_is_last(&buf->skb_list, skb))
1211 			skb = NULL;
1212 		else
1213 			skb = skb_queue_next(&buf->skb_list, skb);
1214 	}
1215 out:
1216 	return;
1217 }
1218 
1219 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1220 {
1221 	struct sk_buff *skb;
1222 	struct iucv_sock *iucv;
1223 	int notify_general_error = 0;
1224 
1225 	if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1226 		notify_general_error = 1;
1227 
1228 	/* release may never happen from within CQ tasklet scope */
1229 	WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1230 
1231 	skb = skb_dequeue(&buf->skb_list);
1232 	while (skb) {
1233 		QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1234 		QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1235 		if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1236 			if (skb->sk) {
1237 				iucv = iucv_sk(skb->sk);
1238 				iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1239 			}
1240 		}
1241 		atomic_dec(&skb->users);
1242 		dev_kfree_skb_any(skb);
1243 		skb = skb_dequeue(&buf->skb_list);
1244 	}
1245 }
1246 
1247 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1248 		struct qeth_qdio_out_buffer *buf,
1249 		enum qeth_qdio_buffer_states newbufstate)
1250 {
1251 	int i;
1252 
1253 	/* is PCI flag set on buffer? */
1254 	if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1255 		atomic_dec(&queue->set_pci_flags_count);
1256 
1257 	if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1258 		qeth_release_skbs(buf);
1259 	}
1260 	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1261 		if (buf->buffer->element[i].addr && buf->is_header[i])
1262 			kmem_cache_free(qeth_core_header_cache,
1263 				buf->buffer->element[i].addr);
1264 		buf->is_header[i] = 0;
1265 		buf->buffer->element[i].length = 0;
1266 		buf->buffer->element[i].addr = NULL;
1267 		buf->buffer->element[i].eflags = 0;
1268 		buf->buffer->element[i].sflags = 0;
1269 	}
1270 	buf->buffer->element[15].eflags = 0;
1271 	buf->buffer->element[15].sflags = 0;
1272 	buf->next_element_to_fill = 0;
1273 	atomic_set(&buf->state, newbufstate);
1274 }
1275 
1276 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1277 {
1278 	int j;
1279 
1280 	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1281 		if (!q->bufs[j])
1282 			continue;
1283 		qeth_cleanup_handled_pending(q, j, 1);
1284 		qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1285 		if (free) {
1286 			kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1287 			q->bufs[j] = NULL;
1288 		}
1289 	}
1290 }
1291 
1292 void qeth_clear_qdio_buffers(struct qeth_card *card)
1293 {
1294 	int i;
1295 
1296 	QETH_CARD_TEXT(card, 2, "clearqdbf");
1297 	/* clear outbound buffers to free skbs */
1298 	for (i = 0; i < card->qdio.no_out_queues; ++i) {
1299 		if (card->qdio.out_qs[i]) {
1300 			qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1301 		}
1302 	}
1303 }
1304 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1305 
1306 static void qeth_free_buffer_pool(struct qeth_card *card)
1307 {
1308 	struct qeth_buffer_pool_entry *pool_entry, *tmp;
1309 	int i = 0;
1310 	list_for_each_entry_safe(pool_entry, tmp,
1311 				 &card->qdio.init_pool.entry_list, init_list){
1312 		for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1313 			free_page((unsigned long)pool_entry->elements[i]);
1314 		list_del(&pool_entry->init_list);
1315 		kfree(pool_entry);
1316 	}
1317 }
1318 
1319 static void qeth_clean_channel(struct qeth_channel *channel)
1320 {
1321 	int cnt;
1322 
1323 	QETH_DBF_TEXT(SETUP, 2, "freech");
1324 	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1325 		kfree(channel->iob[cnt].data);
1326 }
1327 
1328 static void qeth_set_single_write_queues(struct qeth_card *card)
1329 {
1330 	if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1331 	    (card->qdio.no_out_queues == 4))
1332 		qeth_free_qdio_buffers(card);
1333 
1334 	card->qdio.no_out_queues = 1;
1335 	if (card->qdio.default_out_queue != 0)
1336 		dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1337 
1338 	card->qdio.default_out_queue = 0;
1339 }
1340 
1341 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1342 {
1343 	if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1344 	    (card->qdio.no_out_queues == 1)) {
1345 		qeth_free_qdio_buffers(card);
1346 		card->qdio.default_out_queue = 2;
1347 	}
1348 	card->qdio.no_out_queues = 4;
1349 }
1350 
1351 static void qeth_update_from_chp_desc(struct qeth_card *card)
1352 {
1353 	struct ccw_device *ccwdev;
1354 	struct channel_path_desc *chp_dsc;
1355 
1356 	QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1357 
1358 	ccwdev = card->data.ccwdev;
1359 	chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1360 	if (!chp_dsc)
1361 		goto out;
1362 
1363 	card->info.func_level = 0x4100 + chp_dsc->desc;
1364 	if (card->info.type == QETH_CARD_TYPE_IQD)
1365 		goto out;
1366 
1367 	/* CHPP field bit 6 == 1 -> single queue */
1368 	if ((chp_dsc->chpp & 0x02) == 0x02)
1369 		qeth_set_single_write_queues(card);
1370 	else
1371 		qeth_set_multiple_write_queues(card);
1372 out:
1373 	kfree(chp_dsc);
1374 	QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1375 	QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1376 }
1377 
1378 static void qeth_init_qdio_info(struct qeth_card *card)
1379 {
1380 	QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1381 	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1382 	/* inbound */
1383 	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1384 	if (card->info.type == QETH_CARD_TYPE_IQD)
1385 		card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1386 	else
1387 		card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1388 	card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1389 	INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1390 	INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1391 }
1392 
1393 static void qeth_set_intial_options(struct qeth_card *card)
1394 {
1395 	card->options.route4.type = NO_ROUTER;
1396 	card->options.route6.type = NO_ROUTER;
1397 	card->options.fake_broadcast = 0;
1398 	card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1399 	card->options.performance_stats = 0;
1400 	card->options.rx_sg_cb = QETH_RX_SG_CB;
1401 	card->options.isolation = ISOLATION_MODE_NONE;
1402 	card->options.cq = QETH_CQ_DISABLED;
1403 }
1404 
1405 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1406 {
1407 	unsigned long flags;
1408 	int rc = 0;
1409 
1410 	spin_lock_irqsave(&card->thread_mask_lock, flags);
1411 	QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1412 			(u8) card->thread_start_mask,
1413 			(u8) card->thread_allowed_mask,
1414 			(u8) card->thread_running_mask);
1415 	rc = (card->thread_start_mask & thread);
1416 	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1417 	return rc;
1418 }
1419 
1420 static void qeth_start_kernel_thread(struct work_struct *work)
1421 {
1422 	struct task_struct *ts;
1423 	struct qeth_card *card = container_of(work, struct qeth_card,
1424 					kernel_thread_starter);
1425 	QETH_CARD_TEXT(card , 2, "strthrd");
1426 
1427 	if (card->read.state != CH_STATE_UP &&
1428 	    card->write.state != CH_STATE_UP)
1429 		return;
1430 	if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1431 		ts = kthread_run(card->discipline->recover, (void *)card,
1432 				"qeth_recover");
1433 		if (IS_ERR(ts)) {
1434 			qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1435 			qeth_clear_thread_running_bit(card,
1436 				QETH_RECOVER_THREAD);
1437 		}
1438 	}
1439 }
1440 
1441 static void qeth_buffer_reclaim_work(struct work_struct *);
1442 static int qeth_setup_card(struct qeth_card *card)
1443 {
1444 
1445 	QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1446 	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1447 
1448 	card->read.state  = CH_STATE_DOWN;
1449 	card->write.state = CH_STATE_DOWN;
1450 	card->data.state  = CH_STATE_DOWN;
1451 	card->state = CARD_STATE_DOWN;
1452 	card->lan_online = 0;
1453 	card->read_or_write_problem = 0;
1454 	card->dev = NULL;
1455 	spin_lock_init(&card->vlanlock);
1456 	spin_lock_init(&card->mclock);
1457 	spin_lock_init(&card->lock);
1458 	spin_lock_init(&card->ip_lock);
1459 	spin_lock_init(&card->thread_mask_lock);
1460 	mutex_init(&card->conf_mutex);
1461 	mutex_init(&card->discipline_mutex);
1462 	card->thread_start_mask = 0;
1463 	card->thread_allowed_mask = 0;
1464 	card->thread_running_mask = 0;
1465 	INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1466 	INIT_LIST_HEAD(&card->ip_list);
1467 	INIT_LIST_HEAD(card->ip_tbd_list);
1468 	INIT_LIST_HEAD(&card->cmd_waiter_list);
1469 	init_waitqueue_head(&card->wait_q);
1470 	/* initial options */
1471 	qeth_set_intial_options(card);
1472 	/* IP address takeover */
1473 	INIT_LIST_HEAD(&card->ipato.entries);
1474 	card->ipato.enabled = 0;
1475 	card->ipato.invert4 = 0;
1476 	card->ipato.invert6 = 0;
1477 	/* init QDIO stuff */
1478 	qeth_init_qdio_info(card);
1479 	INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1480 	INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1481 	return 0;
1482 }
1483 
1484 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1485 {
1486 	struct qeth_card *card = container_of(slr, struct qeth_card,
1487 					qeth_service_level);
1488 	if (card->info.mcl_level[0])
1489 		seq_printf(m, "qeth: %s firmware level %s\n",
1490 			CARD_BUS_ID(card), card->info.mcl_level);
1491 }
1492 
1493 static struct qeth_card *qeth_alloc_card(void)
1494 {
1495 	struct qeth_card *card;
1496 
1497 	QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1498 	card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1499 	if (!card)
1500 		goto out;
1501 	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1502 	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1503 	if (!card->ip_tbd_list) {
1504 		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1505 		goto out_card;
1506 	}
1507 	if (qeth_setup_channel(&card->read))
1508 		goto out_ip;
1509 	if (qeth_setup_channel(&card->write))
1510 		goto out_channel;
1511 	card->options.layer2 = -1;
1512 	card->qeth_service_level.seq_print = qeth_core_sl_print;
1513 	register_service_level(&card->qeth_service_level);
1514 	return card;
1515 
1516 out_channel:
1517 	qeth_clean_channel(&card->read);
1518 out_ip:
1519 	kfree(card->ip_tbd_list);
1520 out_card:
1521 	kfree(card);
1522 out:
1523 	return NULL;
1524 }
1525 
1526 static int qeth_determine_card_type(struct qeth_card *card)
1527 {
1528 	int i = 0;
1529 
1530 	QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1531 
1532 	card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1533 	card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1534 	while (known_devices[i][QETH_DEV_MODEL_IND]) {
1535 		if ((CARD_RDEV(card)->id.dev_type ==
1536 				known_devices[i][QETH_DEV_TYPE_IND]) &&
1537 		    (CARD_RDEV(card)->id.dev_model ==
1538 				known_devices[i][QETH_DEV_MODEL_IND])) {
1539 			card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1540 			card->qdio.no_out_queues =
1541 				known_devices[i][QETH_QUEUE_NO_IND];
1542 			card->qdio.no_in_queues = 1;
1543 			card->info.is_multicast_different =
1544 				known_devices[i][QETH_MULTICAST_IND];
1545 			qeth_update_from_chp_desc(card);
1546 			return 0;
1547 		}
1548 		i++;
1549 	}
1550 	card->info.type = QETH_CARD_TYPE_UNKNOWN;
1551 	dev_err(&card->gdev->dev, "The adapter hardware is of an "
1552 		"unknown type\n");
1553 	return -ENOENT;
1554 }
1555 
1556 static int qeth_clear_channel(struct qeth_channel *channel)
1557 {
1558 	unsigned long flags;
1559 	struct qeth_card *card;
1560 	int rc;
1561 
1562 	card = CARD_FROM_CDEV(channel->ccwdev);
1563 	QETH_CARD_TEXT(card, 3, "clearch");
1564 	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1565 	rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1566 	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1567 
1568 	if (rc)
1569 		return rc;
1570 	rc = wait_event_interruptible_timeout(card->wait_q,
1571 			channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1572 	if (rc == -ERESTARTSYS)
1573 		return rc;
1574 	if (channel->state != CH_STATE_STOPPED)
1575 		return -ETIME;
1576 	channel->state = CH_STATE_DOWN;
1577 	return 0;
1578 }
1579 
1580 static int qeth_halt_channel(struct qeth_channel *channel)
1581 {
1582 	unsigned long flags;
1583 	struct qeth_card *card;
1584 	int rc;
1585 
1586 	card = CARD_FROM_CDEV(channel->ccwdev);
1587 	QETH_CARD_TEXT(card, 3, "haltch");
1588 	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1589 	rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1590 	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1591 
1592 	if (rc)
1593 		return rc;
1594 	rc = wait_event_interruptible_timeout(card->wait_q,
1595 			channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1596 	if (rc == -ERESTARTSYS)
1597 		return rc;
1598 	if (channel->state != CH_STATE_HALTED)
1599 		return -ETIME;
1600 	return 0;
1601 }
1602 
1603 static int qeth_halt_channels(struct qeth_card *card)
1604 {
1605 	int rc1 = 0, rc2 = 0, rc3 = 0;
1606 
1607 	QETH_CARD_TEXT(card, 3, "haltchs");
1608 	rc1 = qeth_halt_channel(&card->read);
1609 	rc2 = qeth_halt_channel(&card->write);
1610 	rc3 = qeth_halt_channel(&card->data);
1611 	if (rc1)
1612 		return rc1;
1613 	if (rc2)
1614 		return rc2;
1615 	return rc3;
1616 }
1617 
1618 static int qeth_clear_channels(struct qeth_card *card)
1619 {
1620 	int rc1 = 0, rc2 = 0, rc3 = 0;
1621 
1622 	QETH_CARD_TEXT(card, 3, "clearchs");
1623 	rc1 = qeth_clear_channel(&card->read);
1624 	rc2 = qeth_clear_channel(&card->write);
1625 	rc3 = qeth_clear_channel(&card->data);
1626 	if (rc1)
1627 		return rc1;
1628 	if (rc2)
1629 		return rc2;
1630 	return rc3;
1631 }
1632 
1633 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1634 {
1635 	int rc = 0;
1636 
1637 	QETH_CARD_TEXT(card, 3, "clhacrd");
1638 
1639 	if (halt)
1640 		rc = qeth_halt_channels(card);
1641 	if (rc)
1642 		return rc;
1643 	return qeth_clear_channels(card);
1644 }
1645 
1646 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1647 {
1648 	int rc = 0;
1649 
1650 	QETH_CARD_TEXT(card, 3, "qdioclr");
1651 	switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1652 		QETH_QDIO_CLEANING)) {
1653 	case QETH_QDIO_ESTABLISHED:
1654 		if (card->info.type == QETH_CARD_TYPE_IQD)
1655 			rc = qdio_shutdown(CARD_DDEV(card),
1656 				QDIO_FLAG_CLEANUP_USING_HALT);
1657 		else
1658 			rc = qdio_shutdown(CARD_DDEV(card),
1659 				QDIO_FLAG_CLEANUP_USING_CLEAR);
1660 		if (rc)
1661 			QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1662 		atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1663 		break;
1664 	case QETH_QDIO_CLEANING:
1665 		return rc;
1666 	default:
1667 		break;
1668 	}
1669 	rc = qeth_clear_halt_card(card, use_halt);
1670 	if (rc)
1671 		QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1672 	card->state = CARD_STATE_DOWN;
1673 	return rc;
1674 }
1675 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1676 
1677 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1678 			       int *length)
1679 {
1680 	struct ciw *ciw;
1681 	char *rcd_buf;
1682 	int ret;
1683 	struct qeth_channel *channel = &card->data;
1684 	unsigned long flags;
1685 
1686 	/*
1687 	 * scan for RCD command in extended SenseID data
1688 	 */
1689 	ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1690 	if (!ciw || ciw->cmd == 0)
1691 		return -EOPNOTSUPP;
1692 	rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1693 	if (!rcd_buf)
1694 		return -ENOMEM;
1695 
1696 	channel->ccw.cmd_code = ciw->cmd;
1697 	channel->ccw.cda = (__u32) __pa(rcd_buf);
1698 	channel->ccw.count = ciw->count;
1699 	channel->ccw.flags = CCW_FLAG_SLI;
1700 	channel->state = CH_STATE_RCD;
1701 	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1702 	ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1703 				       QETH_RCD_PARM, LPM_ANYPATH, 0,
1704 				       QETH_RCD_TIMEOUT);
1705 	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1706 	if (!ret)
1707 		wait_event(card->wait_q,
1708 			   (channel->state == CH_STATE_RCD_DONE ||
1709 			    channel->state == CH_STATE_DOWN));
1710 	if (channel->state == CH_STATE_DOWN)
1711 		ret = -EIO;
1712 	else
1713 		channel->state = CH_STATE_DOWN;
1714 	if (ret) {
1715 		kfree(rcd_buf);
1716 		*buffer = NULL;
1717 		*length = 0;
1718 	} else {
1719 		*length = ciw->count;
1720 		*buffer = rcd_buf;
1721 	}
1722 	return ret;
1723 }
1724 
1725 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1726 {
1727 	QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1728 	card->info.chpid = prcd[30];
1729 	card->info.unit_addr2 = prcd[31];
1730 	card->info.cula = prcd[63];
1731 	card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1732 			       (prcd[0x11] == _ascebc['M']));
1733 }
1734 
1735 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1736 {
1737 	QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1738 
1739 	if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1740 	    prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1741 		card->info.blkt.time_total = 0;
1742 		card->info.blkt.inter_packet = 0;
1743 		card->info.blkt.inter_packet_jumbo = 0;
1744 	} else {
1745 		card->info.blkt.time_total = 250;
1746 		card->info.blkt.inter_packet = 5;
1747 		card->info.blkt.inter_packet_jumbo = 15;
1748 	}
1749 }
1750 
1751 static void qeth_init_tokens(struct qeth_card *card)
1752 {
1753 	card->token.issuer_rm_w = 0x00010103UL;
1754 	card->token.cm_filter_w = 0x00010108UL;
1755 	card->token.cm_connection_w = 0x0001010aUL;
1756 	card->token.ulp_filter_w = 0x0001010bUL;
1757 	card->token.ulp_connection_w = 0x0001010dUL;
1758 }
1759 
1760 static void qeth_init_func_level(struct qeth_card *card)
1761 {
1762 	switch (card->info.type) {
1763 	case QETH_CARD_TYPE_IQD:
1764 		card->info.func_level =	QETH_IDX_FUNC_LEVEL_IQD;
1765 		break;
1766 	case QETH_CARD_TYPE_OSD:
1767 	case QETH_CARD_TYPE_OSN:
1768 		card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1769 		break;
1770 	default:
1771 		break;
1772 	}
1773 }
1774 
1775 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1776 		void (*idx_reply_cb)(struct qeth_channel *,
1777 			struct qeth_cmd_buffer *))
1778 {
1779 	struct qeth_cmd_buffer *iob;
1780 	unsigned long flags;
1781 	int rc;
1782 	struct qeth_card *card;
1783 
1784 	QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1785 	card = CARD_FROM_CDEV(channel->ccwdev);
1786 	iob = qeth_get_buffer(channel);
1787 	if (!iob)
1788 		return -ENOMEM;
1789 	iob->callback = idx_reply_cb;
1790 	memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1791 	channel->ccw.count = QETH_BUFSIZE;
1792 	channel->ccw.cda = (__u32) __pa(iob->data);
1793 
1794 	wait_event(card->wait_q,
1795 		   atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1796 	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1797 	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1798 	rc = ccw_device_start(channel->ccwdev,
1799 			      &channel->ccw, (addr_t) iob, 0, 0);
1800 	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1801 
1802 	if (rc) {
1803 		QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1804 		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1805 		atomic_set(&channel->irq_pending, 0);
1806 		wake_up(&card->wait_q);
1807 		return rc;
1808 	}
1809 	rc = wait_event_interruptible_timeout(card->wait_q,
1810 			 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1811 	if (rc == -ERESTARTSYS)
1812 		return rc;
1813 	if (channel->state != CH_STATE_UP) {
1814 		rc = -ETIME;
1815 		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1816 		qeth_clear_cmd_buffers(channel);
1817 	} else
1818 		rc = 0;
1819 	return rc;
1820 }
1821 
1822 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1823 		void (*idx_reply_cb)(struct qeth_channel *,
1824 			struct qeth_cmd_buffer *))
1825 {
1826 	struct qeth_card *card;
1827 	struct qeth_cmd_buffer *iob;
1828 	unsigned long flags;
1829 	__u16 temp;
1830 	__u8 tmp;
1831 	int rc;
1832 	struct ccw_dev_id temp_devid;
1833 
1834 	card = CARD_FROM_CDEV(channel->ccwdev);
1835 
1836 	QETH_DBF_TEXT(SETUP, 2, "idxactch");
1837 
1838 	iob = qeth_get_buffer(channel);
1839 	if (!iob)
1840 		return -ENOMEM;
1841 	iob->callback = idx_reply_cb;
1842 	memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1843 	channel->ccw.count = IDX_ACTIVATE_SIZE;
1844 	channel->ccw.cda = (__u32) __pa(iob->data);
1845 	if (channel == &card->write) {
1846 		memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1847 		memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1848 		       &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1849 		card->seqno.trans_hdr++;
1850 	} else {
1851 		memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1852 		memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1853 		       &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1854 	}
1855 	tmp = ((__u8)card->info.portno) | 0x80;
1856 	memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1857 	memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1858 	       &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1859 	memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1860 	       &card->info.func_level, sizeof(__u16));
1861 	ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1862 	memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1863 	temp = (card->info.cula << 8) + card->info.unit_addr2;
1864 	memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1865 
1866 	wait_event(card->wait_q,
1867 		   atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1868 	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1869 	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1870 	rc = ccw_device_start(channel->ccwdev,
1871 			      &channel->ccw, (addr_t) iob, 0, 0);
1872 	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1873 
1874 	if (rc) {
1875 		QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1876 			rc);
1877 		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1878 		atomic_set(&channel->irq_pending, 0);
1879 		wake_up(&card->wait_q);
1880 		return rc;
1881 	}
1882 	rc = wait_event_interruptible_timeout(card->wait_q,
1883 			channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1884 	if (rc == -ERESTARTSYS)
1885 		return rc;
1886 	if (channel->state != CH_STATE_ACTIVATING) {
1887 		dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1888 			" failed to recover an error on the device\n");
1889 		QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1890 			dev_name(&channel->ccwdev->dev));
1891 		QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1892 		qeth_clear_cmd_buffers(channel);
1893 		return -ETIME;
1894 	}
1895 	return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1896 }
1897 
1898 static int qeth_peer_func_level(int level)
1899 {
1900 	if ((level & 0xff) == 8)
1901 		return (level & 0xff) + 0x400;
1902 	if (((level >> 8) & 3) == 1)
1903 		return (level & 0xff) + 0x200;
1904 	return level;
1905 }
1906 
1907 static void qeth_idx_write_cb(struct qeth_channel *channel,
1908 		struct qeth_cmd_buffer *iob)
1909 {
1910 	struct qeth_card *card;
1911 	__u16 temp;
1912 
1913 	QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1914 
1915 	if (channel->state == CH_STATE_DOWN) {
1916 		channel->state = CH_STATE_ACTIVATING;
1917 		goto out;
1918 	}
1919 	card = CARD_FROM_CDEV(channel->ccwdev);
1920 
1921 	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1922 		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1923 			dev_err(&card->write.ccwdev->dev,
1924 				"The adapter is used exclusively by another "
1925 				"host\n");
1926 		else
1927 			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1928 				" negative reply\n",
1929 				dev_name(&card->write.ccwdev->dev));
1930 		goto out;
1931 	}
1932 	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1933 	if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1934 		QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1935 			"function level mismatch (sent: 0x%x, received: "
1936 			"0x%x)\n", dev_name(&card->write.ccwdev->dev),
1937 			card->info.func_level, temp);
1938 		goto out;
1939 	}
1940 	channel->state = CH_STATE_UP;
1941 out:
1942 	qeth_release_buffer(channel, iob);
1943 }
1944 
1945 static void qeth_idx_read_cb(struct qeth_channel *channel,
1946 		struct qeth_cmd_buffer *iob)
1947 {
1948 	struct qeth_card *card;
1949 	__u16 temp;
1950 
1951 	QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1952 	if (channel->state == CH_STATE_DOWN) {
1953 		channel->state = CH_STATE_ACTIVATING;
1954 		goto out;
1955 	}
1956 
1957 	card = CARD_FROM_CDEV(channel->ccwdev);
1958 	if (qeth_check_idx_response(card, iob->data))
1959 			goto out;
1960 
1961 	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1962 		switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1963 		case QETH_IDX_ACT_ERR_EXCL:
1964 			dev_err(&card->write.ccwdev->dev,
1965 				"The adapter is used exclusively by another "
1966 				"host\n");
1967 			break;
1968 		case QETH_IDX_ACT_ERR_AUTH:
1969 		case QETH_IDX_ACT_ERR_AUTH_USER:
1970 			dev_err(&card->read.ccwdev->dev,
1971 				"Setting the device online failed because of "
1972 				"insufficient authorization\n");
1973 			break;
1974 		default:
1975 			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1976 				" negative reply\n",
1977 				dev_name(&card->read.ccwdev->dev));
1978 		}
1979 		QETH_CARD_TEXT_(card, 2, "idxread%c",
1980 			QETH_IDX_ACT_CAUSE_CODE(iob->data));
1981 		goto out;
1982 	}
1983 
1984 /**
1985  *  * temporary fix for microcode bug
1986  *   * to revert it,replace OR by AND
1987  *    */
1988 	if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1989 	     (card->info.type == QETH_CARD_TYPE_OSD))
1990 		card->info.portname_required = 1;
1991 
1992 	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1993 	if (temp != qeth_peer_func_level(card->info.func_level)) {
1994 		QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1995 			"level mismatch (sent: 0x%x, received: 0x%x)\n",
1996 			dev_name(&card->read.ccwdev->dev),
1997 			card->info.func_level, temp);
1998 		goto out;
1999 	}
2000 	memcpy(&card->token.issuer_rm_r,
2001 	       QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2002 	       QETH_MPC_TOKEN_LENGTH);
2003 	memcpy(&card->info.mcl_level[0],
2004 	       QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2005 	channel->state = CH_STATE_UP;
2006 out:
2007 	qeth_release_buffer(channel, iob);
2008 }
2009 
2010 void qeth_prepare_control_data(struct qeth_card *card, int len,
2011 		struct qeth_cmd_buffer *iob)
2012 {
2013 	qeth_setup_ccw(&card->write, iob->data, len);
2014 	iob->callback = qeth_release_buffer;
2015 
2016 	memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2017 	       &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2018 	card->seqno.trans_hdr++;
2019 	memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2020 	       &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2021 	card->seqno.pdu_hdr++;
2022 	memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2023 	       &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2024 	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2025 }
2026 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2027 
2028 /**
2029  * qeth_send_control_data() -	send control command to the card
2030  * @card:			qeth_card structure pointer
2031  * @len:			size of the command buffer
2032  * @iob:			qeth_cmd_buffer pointer
2033  * @reply_cb:			callback function pointer
2034  * @cb_card:			pointer to the qeth_card structure
2035  * @cb_reply:			pointer to the qeth_reply structure
2036  * @cb_cmd:			pointer to the original iob for non-IPA
2037  *				commands, or to the qeth_ipa_cmd structure
2038  *				for the IPA commands.
2039  * @reply_param:		private pointer passed to the callback
2040  *
2041  * Returns the value of the `return_code' field of the response
2042  * block returned from the hardware, or other error indication.
2043  * Value of zero indicates successful execution of the command.
2044  *
2045  * Callback function gets called one or more times, with cb_cmd
2046  * pointing to the response returned by the hardware. Callback
2047  * function must return non-zero if more reply blocks are expected,
2048  * and zero if the last or only reply block is received. Callback
2049  * function can get the value of the reply_param pointer from the
2050  * field 'param' of the structure qeth_reply.
2051  */
2052 
2053 int qeth_send_control_data(struct qeth_card *card, int len,
2054 		struct qeth_cmd_buffer *iob,
2055 		int (*reply_cb)(struct qeth_card *cb_card,
2056 				struct qeth_reply *cb_reply,
2057 				unsigned long cb_cmd),
2058 		void *reply_param)
2059 {
2060 	int rc;
2061 	unsigned long flags;
2062 	struct qeth_reply *reply = NULL;
2063 	unsigned long timeout, event_timeout;
2064 	struct qeth_ipa_cmd *cmd;
2065 
2066 	QETH_CARD_TEXT(card, 2, "sendctl");
2067 
2068 	if (card->read_or_write_problem) {
2069 		qeth_release_buffer(iob->channel, iob);
2070 		return -EIO;
2071 	}
2072 	reply = qeth_alloc_reply(card);
2073 	if (!reply) {
2074 		return -ENOMEM;
2075 	}
2076 	reply->callback = reply_cb;
2077 	reply->param = reply_param;
2078 	if (card->state == CARD_STATE_DOWN)
2079 		reply->seqno = QETH_IDX_COMMAND_SEQNO;
2080 	else
2081 		reply->seqno = card->seqno.ipa++;
2082 	init_waitqueue_head(&reply->wait_q);
2083 	spin_lock_irqsave(&card->lock, flags);
2084 	list_add_tail(&reply->list, &card->cmd_waiter_list);
2085 	spin_unlock_irqrestore(&card->lock, flags);
2086 	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2087 
2088 	while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2089 	qeth_prepare_control_data(card, len, iob);
2090 
2091 	if (IS_IPA(iob->data))
2092 		event_timeout = QETH_IPA_TIMEOUT;
2093 	else
2094 		event_timeout = QETH_TIMEOUT;
2095 	timeout = jiffies + event_timeout;
2096 
2097 	QETH_CARD_TEXT(card, 6, "noirqpnd");
2098 	spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2099 	rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2100 			      (addr_t) iob, 0, 0);
2101 	spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2102 	if (rc) {
2103 		QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2104 			"ccw_device_start rc = %i\n",
2105 			dev_name(&card->write.ccwdev->dev), rc);
2106 		QETH_CARD_TEXT_(card, 2, " err%d", rc);
2107 		spin_lock_irqsave(&card->lock, flags);
2108 		list_del_init(&reply->list);
2109 		qeth_put_reply(reply);
2110 		spin_unlock_irqrestore(&card->lock, flags);
2111 		qeth_release_buffer(iob->channel, iob);
2112 		atomic_set(&card->write.irq_pending, 0);
2113 		wake_up(&card->wait_q);
2114 		return rc;
2115 	}
2116 
2117 	/* we have only one long running ipassist, since we can ensure
2118 	   process context of this command we can sleep */
2119 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2120 	if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2121 	    (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2122 		if (!wait_event_timeout(reply->wait_q,
2123 		    atomic_read(&reply->received), event_timeout))
2124 			goto time_err;
2125 	} else {
2126 		while (!atomic_read(&reply->received)) {
2127 			if (time_after(jiffies, timeout))
2128 				goto time_err;
2129 			cpu_relax();
2130 		}
2131 	}
2132 
2133 	if (reply->rc == -EIO)
2134 		goto error;
2135 	rc = reply->rc;
2136 	qeth_put_reply(reply);
2137 	return rc;
2138 
2139 time_err:
2140 	reply->rc = -ETIME;
2141 	spin_lock_irqsave(&reply->card->lock, flags);
2142 	list_del_init(&reply->list);
2143 	spin_unlock_irqrestore(&reply->card->lock, flags);
2144 	atomic_inc(&reply->received);
2145 error:
2146 	atomic_set(&card->write.irq_pending, 0);
2147 	qeth_release_buffer(iob->channel, iob);
2148 	card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2149 	rc = reply->rc;
2150 	qeth_put_reply(reply);
2151 	return rc;
2152 }
2153 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2154 
2155 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2156 		unsigned long data)
2157 {
2158 	struct qeth_cmd_buffer *iob;
2159 
2160 	QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2161 
2162 	iob = (struct qeth_cmd_buffer *) data;
2163 	memcpy(&card->token.cm_filter_r,
2164 	       QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2165 	       QETH_MPC_TOKEN_LENGTH);
2166 	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2167 	return 0;
2168 }
2169 
2170 static int qeth_cm_enable(struct qeth_card *card)
2171 {
2172 	int rc;
2173 	struct qeth_cmd_buffer *iob;
2174 
2175 	QETH_DBF_TEXT(SETUP, 2, "cmenable");
2176 
2177 	iob = qeth_wait_for_buffer(&card->write);
2178 	memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2179 	memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2180 	       &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2181 	memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2182 	       &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2183 
2184 	rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2185 				    qeth_cm_enable_cb, NULL);
2186 	return rc;
2187 }
2188 
2189 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2190 		unsigned long data)
2191 {
2192 
2193 	struct qeth_cmd_buffer *iob;
2194 
2195 	QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2196 
2197 	iob = (struct qeth_cmd_buffer *) data;
2198 	memcpy(&card->token.cm_connection_r,
2199 	       QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2200 	       QETH_MPC_TOKEN_LENGTH);
2201 	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2202 	return 0;
2203 }
2204 
2205 static int qeth_cm_setup(struct qeth_card *card)
2206 {
2207 	int rc;
2208 	struct qeth_cmd_buffer *iob;
2209 
2210 	QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2211 
2212 	iob = qeth_wait_for_buffer(&card->write);
2213 	memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2214 	memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2215 	       &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2216 	memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2217 	       &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2218 	memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2219 	       &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2220 	rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2221 				    qeth_cm_setup_cb, NULL);
2222 	return rc;
2223 
2224 }
2225 
2226 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2227 {
2228 	switch (card->info.type) {
2229 	case QETH_CARD_TYPE_UNKNOWN:
2230 		return 1500;
2231 	case QETH_CARD_TYPE_IQD:
2232 		return card->info.max_mtu;
2233 	case QETH_CARD_TYPE_OSD:
2234 		switch (card->info.link_type) {
2235 		case QETH_LINK_TYPE_HSTR:
2236 		case QETH_LINK_TYPE_LANE_TR:
2237 			return 2000;
2238 		default:
2239 			return card->options.layer2 ? 1500 : 1492;
2240 		}
2241 	case QETH_CARD_TYPE_OSM:
2242 	case QETH_CARD_TYPE_OSX:
2243 		return card->options.layer2 ? 1500 : 1492;
2244 	default:
2245 		return 1500;
2246 	}
2247 }
2248 
2249 static inline int qeth_get_mtu_outof_framesize(int framesize)
2250 {
2251 	switch (framesize) {
2252 	case 0x4000:
2253 		return 8192;
2254 	case 0x6000:
2255 		return 16384;
2256 	case 0xa000:
2257 		return 32768;
2258 	case 0xffff:
2259 		return 57344;
2260 	default:
2261 		return 0;
2262 	}
2263 }
2264 
2265 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2266 {
2267 	switch (card->info.type) {
2268 	case QETH_CARD_TYPE_OSD:
2269 	case QETH_CARD_TYPE_OSM:
2270 	case QETH_CARD_TYPE_OSX:
2271 	case QETH_CARD_TYPE_IQD:
2272 		return ((mtu >= 576) &&
2273 			(mtu <= card->info.max_mtu));
2274 	case QETH_CARD_TYPE_OSN:
2275 	case QETH_CARD_TYPE_UNKNOWN:
2276 	default:
2277 		return 1;
2278 	}
2279 }
2280 
2281 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2282 		unsigned long data)
2283 {
2284 
2285 	__u16 mtu, framesize;
2286 	__u16 len;
2287 	__u8 link_type;
2288 	struct qeth_cmd_buffer *iob;
2289 
2290 	QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2291 
2292 	iob = (struct qeth_cmd_buffer *) data;
2293 	memcpy(&card->token.ulp_filter_r,
2294 	       QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2295 	       QETH_MPC_TOKEN_LENGTH);
2296 	if (card->info.type == QETH_CARD_TYPE_IQD) {
2297 		memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2298 		mtu = qeth_get_mtu_outof_framesize(framesize);
2299 		if (!mtu) {
2300 			iob->rc = -EINVAL;
2301 			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2302 			return 0;
2303 		}
2304 		if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2305 			/* frame size has changed */
2306 			if (card->dev &&
2307 			    ((card->dev->mtu == card->info.initial_mtu) ||
2308 			     (card->dev->mtu > mtu)))
2309 				card->dev->mtu = mtu;
2310 			qeth_free_qdio_buffers(card);
2311 		}
2312 		card->info.initial_mtu = mtu;
2313 		card->info.max_mtu = mtu;
2314 		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2315 	} else {
2316 		card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2317 			iob->data);
2318 		card->info.initial_mtu = min(card->info.max_mtu,
2319 					qeth_get_initial_mtu_for_card(card));
2320 		card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2321 	}
2322 
2323 	memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2324 	if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2325 		memcpy(&link_type,
2326 		       QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2327 		card->info.link_type = link_type;
2328 	} else
2329 		card->info.link_type = 0;
2330 	QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2331 	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2332 	return 0;
2333 }
2334 
2335 static int qeth_ulp_enable(struct qeth_card *card)
2336 {
2337 	int rc;
2338 	char prot_type;
2339 	struct qeth_cmd_buffer *iob;
2340 
2341 	/*FIXME: trace view callbacks*/
2342 	QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2343 
2344 	iob = qeth_wait_for_buffer(&card->write);
2345 	memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2346 
2347 	*(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2348 		(__u8) card->info.portno;
2349 	if (card->options.layer2)
2350 		if (card->info.type == QETH_CARD_TYPE_OSN)
2351 			prot_type = QETH_PROT_OSN2;
2352 		else
2353 			prot_type = QETH_PROT_LAYER2;
2354 	else
2355 		prot_type = QETH_PROT_TCPIP;
2356 
2357 	memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2358 	memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2359 	       &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2360 	memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2361 	       &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2362 	memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2363 	       card->info.portname, 9);
2364 	rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2365 				    qeth_ulp_enable_cb, NULL);
2366 	return rc;
2367 
2368 }
2369 
2370 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2371 		unsigned long data)
2372 {
2373 	struct qeth_cmd_buffer *iob;
2374 
2375 	QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2376 
2377 	iob = (struct qeth_cmd_buffer *) data;
2378 	memcpy(&card->token.ulp_connection_r,
2379 	       QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2380 	       QETH_MPC_TOKEN_LENGTH);
2381 	if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2382 		     3)) {
2383 		QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2384 		dev_err(&card->gdev->dev, "A connection could not be "
2385 			"established because of an OLM limit\n");
2386 		iob->rc = -EMLINK;
2387 	}
2388 	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2389 	return 0;
2390 }
2391 
2392 static int qeth_ulp_setup(struct qeth_card *card)
2393 {
2394 	int rc;
2395 	__u16 temp;
2396 	struct qeth_cmd_buffer *iob;
2397 	struct ccw_dev_id dev_id;
2398 
2399 	QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2400 
2401 	iob = qeth_wait_for_buffer(&card->write);
2402 	memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2403 
2404 	memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2405 	       &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2406 	memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2407 	       &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2408 	memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2409 	       &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2410 
2411 	ccw_device_get_id(CARD_DDEV(card), &dev_id);
2412 	memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2413 	temp = (card->info.cula << 8) + card->info.unit_addr2;
2414 	memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2415 	rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2416 				    qeth_ulp_setup_cb, NULL);
2417 	return rc;
2418 }
2419 
2420 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2421 {
2422 	int rc;
2423 	struct qeth_qdio_out_buffer *newbuf;
2424 
2425 	rc = 0;
2426 	newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2427 	if (!newbuf) {
2428 		rc = -ENOMEM;
2429 		goto out;
2430 	}
2431 	newbuf->buffer = q->qdio_bufs[bidx];
2432 	skb_queue_head_init(&newbuf->skb_list);
2433 	lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2434 	newbuf->q = q;
2435 	newbuf->aob = NULL;
2436 	newbuf->next_pending = q->bufs[bidx];
2437 	atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2438 	q->bufs[bidx] = newbuf;
2439 	if (q->bufstates) {
2440 		q->bufstates[bidx].user = newbuf;
2441 		QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2442 		QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2443 		QETH_CARD_TEXT_(q->card, 2, "%lx",
2444 				(long) newbuf->next_pending);
2445 	}
2446 out:
2447 	return rc;
2448 }
2449 
2450 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2451 {
2452 	if (!q)
2453 		return;
2454 
2455 	qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2456 	kfree(q);
2457 }
2458 
2459 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2460 {
2461 	struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2462 
2463 	if (!q)
2464 		return NULL;
2465 
2466 	if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2467 		kfree(q);
2468 		return NULL;
2469 	}
2470 	return q;
2471 }
2472 
2473 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2474 {
2475 	int i, j;
2476 
2477 	QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2478 
2479 	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2480 		QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2481 		return 0;
2482 
2483 	QETH_DBF_TEXT(SETUP, 2, "inq");
2484 	card->qdio.in_q = qeth_alloc_qdio_queue();
2485 	if (!card->qdio.in_q)
2486 		goto out_nomem;
2487 
2488 	/* inbound buffer pool */
2489 	if (qeth_alloc_buffer_pool(card))
2490 		goto out_freeinq;
2491 
2492 	/* outbound */
2493 	card->qdio.out_qs =
2494 		kzalloc(card->qdio.no_out_queues *
2495 			sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2496 	if (!card->qdio.out_qs)
2497 		goto out_freepool;
2498 	for (i = 0; i < card->qdio.no_out_queues; ++i) {
2499 		card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2500 		if (!card->qdio.out_qs[i])
2501 			goto out_freeoutq;
2502 		QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2503 		QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2504 		card->qdio.out_qs[i]->queue_no = i;
2505 		/* give outbound qeth_qdio_buffers their qdio_buffers */
2506 		for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2507 			WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2508 			if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2509 				goto out_freeoutqbufs;
2510 		}
2511 	}
2512 
2513 	/* completion */
2514 	if (qeth_alloc_cq(card))
2515 		goto out_freeoutq;
2516 
2517 	return 0;
2518 
2519 out_freeoutqbufs:
2520 	while (j > 0) {
2521 		--j;
2522 		kmem_cache_free(qeth_qdio_outbuf_cache,
2523 				card->qdio.out_qs[i]->bufs[j]);
2524 		card->qdio.out_qs[i]->bufs[j] = NULL;
2525 	}
2526 out_freeoutq:
2527 	while (i > 0) {
2528 		qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2529 		qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2530 	}
2531 	kfree(card->qdio.out_qs);
2532 	card->qdio.out_qs = NULL;
2533 out_freepool:
2534 	qeth_free_buffer_pool(card);
2535 out_freeinq:
2536 	qeth_free_qdio_queue(card->qdio.in_q);
2537 	card->qdio.in_q = NULL;
2538 out_nomem:
2539 	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2540 	return -ENOMEM;
2541 }
2542 
2543 static void qeth_free_qdio_buffers(struct qeth_card *card)
2544 {
2545 	int i, j;
2546 
2547 	if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2548 		QETH_QDIO_UNINITIALIZED)
2549 		return;
2550 
2551 	qeth_free_cq(card);
2552 	cancel_delayed_work_sync(&card->buffer_reclaim_work);
2553 	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2554 		if (card->qdio.in_q->bufs[j].rx_skb)
2555 			dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2556 	}
2557 	qeth_free_qdio_queue(card->qdio.in_q);
2558 	card->qdio.in_q = NULL;
2559 	/* inbound buffer pool */
2560 	qeth_free_buffer_pool(card);
2561 	/* free outbound qdio_qs */
2562 	if (card->qdio.out_qs) {
2563 		for (i = 0; i < card->qdio.no_out_queues; ++i) {
2564 			qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2565 			qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2566 		}
2567 		kfree(card->qdio.out_qs);
2568 		card->qdio.out_qs = NULL;
2569 	}
2570 }
2571 
2572 static void qeth_create_qib_param_field(struct qeth_card *card,
2573 		char *param_field)
2574 {
2575 
2576 	param_field[0] = _ascebc['P'];
2577 	param_field[1] = _ascebc['C'];
2578 	param_field[2] = _ascebc['I'];
2579 	param_field[3] = _ascebc['T'];
2580 	*((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2581 	*((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2582 	*((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2583 }
2584 
2585 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2586 		char *param_field)
2587 {
2588 	param_field[16] = _ascebc['B'];
2589 	param_field[17] = _ascebc['L'];
2590 	param_field[18] = _ascebc['K'];
2591 	param_field[19] = _ascebc['T'];
2592 	*((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2593 	*((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2594 	*((unsigned int *) (&param_field[28])) =
2595 		card->info.blkt.inter_packet_jumbo;
2596 }
2597 
2598 static int qeth_qdio_activate(struct qeth_card *card)
2599 {
2600 	QETH_DBF_TEXT(SETUP, 3, "qdioact");
2601 	return qdio_activate(CARD_DDEV(card));
2602 }
2603 
2604 static int qeth_dm_act(struct qeth_card *card)
2605 {
2606 	int rc;
2607 	struct qeth_cmd_buffer *iob;
2608 
2609 	QETH_DBF_TEXT(SETUP, 2, "dmact");
2610 
2611 	iob = qeth_wait_for_buffer(&card->write);
2612 	memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2613 
2614 	memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2615 	       &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2616 	memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2617 	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2618 	rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2619 	return rc;
2620 }
2621 
2622 static int qeth_mpc_initialize(struct qeth_card *card)
2623 {
2624 	int rc;
2625 
2626 	QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2627 
2628 	rc = qeth_issue_next_read(card);
2629 	if (rc) {
2630 		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2631 		return rc;
2632 	}
2633 	rc = qeth_cm_enable(card);
2634 	if (rc) {
2635 		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2636 		goto out_qdio;
2637 	}
2638 	rc = qeth_cm_setup(card);
2639 	if (rc) {
2640 		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2641 		goto out_qdio;
2642 	}
2643 	rc = qeth_ulp_enable(card);
2644 	if (rc) {
2645 		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2646 		goto out_qdio;
2647 	}
2648 	rc = qeth_ulp_setup(card);
2649 	if (rc) {
2650 		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2651 		goto out_qdio;
2652 	}
2653 	rc = qeth_alloc_qdio_buffers(card);
2654 	if (rc) {
2655 		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2656 		goto out_qdio;
2657 	}
2658 	rc = qeth_qdio_establish(card);
2659 	if (rc) {
2660 		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2661 		qeth_free_qdio_buffers(card);
2662 		goto out_qdio;
2663 	}
2664 	rc = qeth_qdio_activate(card);
2665 	if (rc) {
2666 		QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2667 		goto out_qdio;
2668 	}
2669 	rc = qeth_dm_act(card);
2670 	if (rc) {
2671 		QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2672 		goto out_qdio;
2673 	}
2674 
2675 	return 0;
2676 out_qdio:
2677 	qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2678 	qdio_free(CARD_DDEV(card));
2679 	return rc;
2680 }
2681 
2682 static void qeth_print_status_with_portname(struct qeth_card *card)
2683 {
2684 	char dbf_text[15];
2685 	int i;
2686 
2687 	sprintf(dbf_text, "%s", card->info.portname + 1);
2688 	for (i = 0; i < 8; i++)
2689 		dbf_text[i] =
2690 			(char) _ebcasc[(__u8) dbf_text[i]];
2691 	dbf_text[8] = 0;
2692 	dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2693 	       "with link type %s (portname: %s)\n",
2694 	       qeth_get_cardname(card),
2695 	       (card->info.mcl_level[0]) ? " (level: " : "",
2696 	       (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2697 	       (card->info.mcl_level[0]) ? ")" : "",
2698 	       qeth_get_cardname_short(card),
2699 	       dbf_text);
2700 
2701 }
2702 
2703 static void qeth_print_status_no_portname(struct qeth_card *card)
2704 {
2705 	if (card->info.portname[0])
2706 		dev_info(&card->gdev->dev, "Device is a%s "
2707 		       "card%s%s%s\nwith link type %s "
2708 		       "(no portname needed by interface).\n",
2709 		       qeth_get_cardname(card),
2710 		       (card->info.mcl_level[0]) ? " (level: " : "",
2711 		       (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2712 		       (card->info.mcl_level[0]) ? ")" : "",
2713 		       qeth_get_cardname_short(card));
2714 	else
2715 		dev_info(&card->gdev->dev, "Device is a%s "
2716 		       "card%s%s%s\nwith link type %s.\n",
2717 		       qeth_get_cardname(card),
2718 		       (card->info.mcl_level[0]) ? " (level: " : "",
2719 		       (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2720 		       (card->info.mcl_level[0]) ? ")" : "",
2721 		       qeth_get_cardname_short(card));
2722 }
2723 
2724 void qeth_print_status_message(struct qeth_card *card)
2725 {
2726 	switch (card->info.type) {
2727 	case QETH_CARD_TYPE_OSD:
2728 	case QETH_CARD_TYPE_OSM:
2729 	case QETH_CARD_TYPE_OSX:
2730 		/* VM will use a non-zero first character
2731 		 * to indicate a HiperSockets like reporting
2732 		 * of the level OSA sets the first character to zero
2733 		 * */
2734 		if (!card->info.mcl_level[0]) {
2735 			sprintf(card->info.mcl_level, "%02x%02x",
2736 				card->info.mcl_level[2],
2737 				card->info.mcl_level[3]);
2738 
2739 			card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2740 			break;
2741 		}
2742 		/* fallthrough */
2743 	case QETH_CARD_TYPE_IQD:
2744 		if ((card->info.guestlan) ||
2745 		    (card->info.mcl_level[0] & 0x80)) {
2746 			card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2747 				card->info.mcl_level[0]];
2748 			card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2749 				card->info.mcl_level[1]];
2750 			card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2751 				card->info.mcl_level[2]];
2752 			card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2753 				card->info.mcl_level[3]];
2754 			card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2755 		}
2756 		break;
2757 	default:
2758 		memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2759 	}
2760 	if (card->info.portname_required)
2761 		qeth_print_status_with_portname(card);
2762 	else
2763 		qeth_print_status_no_portname(card);
2764 }
2765 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2766 
2767 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2768 {
2769 	struct qeth_buffer_pool_entry *entry;
2770 
2771 	QETH_CARD_TEXT(card, 5, "inwrklst");
2772 
2773 	list_for_each_entry(entry,
2774 			    &card->qdio.init_pool.entry_list, init_list) {
2775 		qeth_put_buffer_pool_entry(card, entry);
2776 	}
2777 }
2778 
2779 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2780 		struct qeth_card *card)
2781 {
2782 	struct list_head *plh;
2783 	struct qeth_buffer_pool_entry *entry;
2784 	int i, free;
2785 	struct page *page;
2786 
2787 	if (list_empty(&card->qdio.in_buf_pool.entry_list))
2788 		return NULL;
2789 
2790 	list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2791 		entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2792 		free = 1;
2793 		for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2794 			if (page_count(virt_to_page(entry->elements[i])) > 1) {
2795 				free = 0;
2796 				break;
2797 			}
2798 		}
2799 		if (free) {
2800 			list_del_init(&entry->list);
2801 			return entry;
2802 		}
2803 	}
2804 
2805 	/* no free buffer in pool so take first one and swap pages */
2806 	entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2807 			struct qeth_buffer_pool_entry, list);
2808 	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2809 		if (page_count(virt_to_page(entry->elements[i])) > 1) {
2810 			page = alloc_page(GFP_ATOMIC);
2811 			if (!page) {
2812 				return NULL;
2813 			} else {
2814 				free_page((unsigned long)entry->elements[i]);
2815 				entry->elements[i] = page_address(page);
2816 				if (card->options.performance_stats)
2817 					card->perf_stats.sg_alloc_page_rx++;
2818 			}
2819 		}
2820 	}
2821 	list_del_init(&entry->list);
2822 	return entry;
2823 }
2824 
2825 static int qeth_init_input_buffer(struct qeth_card *card,
2826 		struct qeth_qdio_buffer *buf)
2827 {
2828 	struct qeth_buffer_pool_entry *pool_entry;
2829 	int i;
2830 
2831 	if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2832 		buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2833 		if (!buf->rx_skb)
2834 			return 1;
2835 	}
2836 
2837 	pool_entry = qeth_find_free_buffer_pool_entry(card);
2838 	if (!pool_entry)
2839 		return 1;
2840 
2841 	/*
2842 	 * since the buffer is accessed only from the input_tasklet
2843 	 * there shouldn't be a need to synchronize; also, since we use
2844 	 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2845 	 * buffers
2846 	 */
2847 
2848 	buf->pool_entry = pool_entry;
2849 	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2850 		buf->buffer->element[i].length = PAGE_SIZE;
2851 		buf->buffer->element[i].addr =  pool_entry->elements[i];
2852 		if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2853 			buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2854 		else
2855 			buf->buffer->element[i].eflags = 0;
2856 		buf->buffer->element[i].sflags = 0;
2857 	}
2858 	return 0;
2859 }
2860 
2861 int qeth_init_qdio_queues(struct qeth_card *card)
2862 {
2863 	int i, j;
2864 	int rc;
2865 
2866 	QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2867 
2868 	/* inbound queue */
2869 	qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2870 			   QDIO_MAX_BUFFERS_PER_Q);
2871 	qeth_initialize_working_pool_list(card);
2872 	/*give only as many buffers to hardware as we have buffer pool entries*/
2873 	for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2874 		qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2875 	card->qdio.in_q->next_buf_to_init =
2876 		card->qdio.in_buf_pool.buf_count - 1;
2877 	rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2878 		     card->qdio.in_buf_pool.buf_count - 1);
2879 	if (rc) {
2880 		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2881 		return rc;
2882 	}
2883 
2884 	/* completion */
2885 	rc = qeth_cq_init(card);
2886 	if (rc) {
2887 		return rc;
2888 	}
2889 
2890 	/* outbound queue */
2891 	for (i = 0; i < card->qdio.no_out_queues; ++i) {
2892 		qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2893 				   QDIO_MAX_BUFFERS_PER_Q);
2894 		for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2895 			qeth_clear_output_buffer(card->qdio.out_qs[i],
2896 					card->qdio.out_qs[i]->bufs[j],
2897 					QETH_QDIO_BUF_EMPTY);
2898 		}
2899 		card->qdio.out_qs[i]->card = card;
2900 		card->qdio.out_qs[i]->next_buf_to_fill = 0;
2901 		card->qdio.out_qs[i]->do_pack = 0;
2902 		atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2903 		atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2904 		atomic_set(&card->qdio.out_qs[i]->state,
2905 			   QETH_OUT_Q_UNLOCKED);
2906 	}
2907 	return 0;
2908 }
2909 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2910 
2911 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2912 {
2913 	switch (link_type) {
2914 	case QETH_LINK_TYPE_HSTR:
2915 		return 2;
2916 	default:
2917 		return 1;
2918 	}
2919 }
2920 
2921 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2922 		struct qeth_ipa_cmd *cmd, __u8 command,
2923 		enum qeth_prot_versions prot)
2924 {
2925 	memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2926 	cmd->hdr.command = command;
2927 	cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2928 	cmd->hdr.seqno = card->seqno.ipa;
2929 	cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2930 	cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2931 	if (card->options.layer2)
2932 		cmd->hdr.prim_version_no = 2;
2933 	else
2934 		cmd->hdr.prim_version_no = 1;
2935 	cmd->hdr.param_count = 1;
2936 	cmd->hdr.prot_version = prot;
2937 	cmd->hdr.ipa_supported = 0;
2938 	cmd->hdr.ipa_enabled = 0;
2939 }
2940 
2941 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2942 		enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2943 {
2944 	struct qeth_cmd_buffer *iob;
2945 	struct qeth_ipa_cmd *cmd;
2946 
2947 	iob = qeth_get_buffer(&card->write);
2948 	if (iob) {
2949 		cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2950 		qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2951 	} else {
2952 		dev_warn(&card->gdev->dev,
2953 			 "The qeth driver ran out of channel command buffers\n");
2954 		QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2955 				 dev_name(&card->gdev->dev));
2956 	}
2957 
2958 	return iob;
2959 }
2960 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2961 
2962 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2963 		char prot_type)
2964 {
2965 	memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2966 	memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2967 	memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2968 	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2969 }
2970 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2971 
2972 /**
2973  * qeth_send_ipa_cmd() - send an IPA command
2974  *
2975  * See qeth_send_control_data() for explanation of the arguments.
2976  */
2977 
2978 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2979 		int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2980 			unsigned long),
2981 		void *reply_param)
2982 {
2983 	int rc;
2984 	char prot_type;
2985 
2986 	QETH_CARD_TEXT(card, 4, "sendipa");
2987 
2988 	if (card->options.layer2)
2989 		if (card->info.type == QETH_CARD_TYPE_OSN)
2990 			prot_type = QETH_PROT_OSN2;
2991 		else
2992 			prot_type = QETH_PROT_LAYER2;
2993 	else
2994 		prot_type = QETH_PROT_TCPIP;
2995 	qeth_prepare_ipa_cmd(card, iob, prot_type);
2996 	rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2997 						iob, reply_cb, reply_param);
2998 	if (rc == -ETIME) {
2999 		qeth_clear_ipacmd_list(card);
3000 		qeth_schedule_recovery(card);
3001 	}
3002 	return rc;
3003 }
3004 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3005 
3006 int qeth_send_startlan(struct qeth_card *card)
3007 {
3008 	int rc;
3009 	struct qeth_cmd_buffer *iob;
3010 
3011 	QETH_DBF_TEXT(SETUP, 2, "strtlan");
3012 
3013 	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
3014 	if (!iob)
3015 		return -ENOMEM;
3016 	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
3017 	return rc;
3018 }
3019 EXPORT_SYMBOL_GPL(qeth_send_startlan);
3020 
3021 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
3022 		struct qeth_reply *reply, unsigned long data)
3023 {
3024 	struct qeth_ipa_cmd *cmd;
3025 
3026 	QETH_CARD_TEXT(card, 4, "defadpcb");
3027 
3028 	cmd = (struct qeth_ipa_cmd *) data;
3029 	if (cmd->hdr.return_code == 0)
3030 		cmd->hdr.return_code =
3031 			cmd->data.setadapterparms.hdr.return_code;
3032 	return 0;
3033 }
3034 
3035 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3036 		struct qeth_reply *reply, unsigned long data)
3037 {
3038 	struct qeth_ipa_cmd *cmd;
3039 
3040 	QETH_CARD_TEXT(card, 3, "quyadpcb");
3041 
3042 	cmd = (struct qeth_ipa_cmd *) data;
3043 	if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3044 		card->info.link_type =
3045 		      cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3046 		QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3047 	}
3048 	card->options.adp.supported_funcs =
3049 		cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3050 	return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3051 }
3052 
3053 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3054 		__u32 command, __u32 cmdlen)
3055 {
3056 	struct qeth_cmd_buffer *iob;
3057 	struct qeth_ipa_cmd *cmd;
3058 
3059 	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3060 				     QETH_PROT_IPV4);
3061 	if (iob) {
3062 		cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3063 		cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3064 		cmd->data.setadapterparms.hdr.command_code = command;
3065 		cmd->data.setadapterparms.hdr.used_total = 1;
3066 		cmd->data.setadapterparms.hdr.seq_no = 1;
3067 	}
3068 
3069 	return iob;
3070 }
3071 
3072 int qeth_query_setadapterparms(struct qeth_card *card)
3073 {
3074 	int rc;
3075 	struct qeth_cmd_buffer *iob;
3076 
3077 	QETH_CARD_TEXT(card, 3, "queryadp");
3078 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3079 				   sizeof(struct qeth_ipacmd_setadpparms));
3080 	if (!iob)
3081 		return -ENOMEM;
3082 	rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3083 	return rc;
3084 }
3085 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3086 
3087 static int qeth_query_ipassists_cb(struct qeth_card *card,
3088 		struct qeth_reply *reply, unsigned long data)
3089 {
3090 	struct qeth_ipa_cmd *cmd;
3091 
3092 	QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3093 
3094 	cmd = (struct qeth_ipa_cmd *) data;
3095 
3096 	switch (cmd->hdr.return_code) {
3097 	case IPA_RC_NOTSUPP:
3098 	case IPA_RC_L2_UNSUPPORTED_CMD:
3099 		QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3100 		card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3101 		card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3102 		return -0;
3103 	default:
3104 		if (cmd->hdr.return_code) {
3105 			QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3106 						"rc=%d\n",
3107 						dev_name(&card->gdev->dev),
3108 						cmd->hdr.return_code);
3109 			return 0;
3110 		}
3111 	}
3112 
3113 	if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3114 		card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3115 		card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3116 	} else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3117 		card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3118 		card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3119 	} else
3120 		QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3121 					"\n", dev_name(&card->gdev->dev));
3122 	return 0;
3123 }
3124 
3125 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3126 {
3127 	int rc;
3128 	struct qeth_cmd_buffer *iob;
3129 
3130 	QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3131 	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3132 	if (!iob)
3133 		return -ENOMEM;
3134 	rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3135 	return rc;
3136 }
3137 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3138 
3139 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3140 				struct qeth_reply *reply, unsigned long data)
3141 {
3142 	struct qeth_ipa_cmd *cmd;
3143 	struct qeth_switch_info *sw_info;
3144 	struct qeth_query_switch_attributes *attrs;
3145 
3146 	QETH_CARD_TEXT(card, 2, "qswiatcb");
3147 	cmd = (struct qeth_ipa_cmd *) data;
3148 	sw_info = (struct qeth_switch_info *)reply->param;
3149 	if (cmd->data.setadapterparms.hdr.return_code == 0) {
3150 		attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3151 		sw_info->capabilities = attrs->capabilities;
3152 		sw_info->settings = attrs->settings;
3153 		QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3154 							sw_info->settings);
3155 	}
3156 	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3157 
3158 	return 0;
3159 }
3160 
3161 int qeth_query_switch_attributes(struct qeth_card *card,
3162 				 struct qeth_switch_info *sw_info)
3163 {
3164 	struct qeth_cmd_buffer *iob;
3165 
3166 	QETH_CARD_TEXT(card, 2, "qswiattr");
3167 	if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3168 		return -EOPNOTSUPP;
3169 	if (!netif_carrier_ok(card->dev))
3170 		return -ENOMEDIUM;
3171 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3172 				sizeof(struct qeth_ipacmd_setadpparms_hdr));
3173 	if (!iob)
3174 		return -ENOMEM;
3175 	return qeth_send_ipa_cmd(card, iob,
3176 				qeth_query_switch_attributes_cb, sw_info);
3177 }
3178 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3179 
3180 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3181 		struct qeth_reply *reply, unsigned long data)
3182 {
3183 	struct qeth_ipa_cmd *cmd;
3184 	__u16 rc;
3185 
3186 	cmd = (struct qeth_ipa_cmd *)data;
3187 	rc = cmd->hdr.return_code;
3188 	if (rc)
3189 		QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3190 	else
3191 		card->info.diagass_support = cmd->data.diagass.ext;
3192 	return 0;
3193 }
3194 
3195 static int qeth_query_setdiagass(struct qeth_card *card)
3196 {
3197 	struct qeth_cmd_buffer *iob;
3198 	struct qeth_ipa_cmd    *cmd;
3199 
3200 	QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3201 	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3202 	if (!iob)
3203 		return -ENOMEM;
3204 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3205 	cmd->data.diagass.subcmd_len = 16;
3206 	cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3207 	return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3208 }
3209 
3210 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3211 {
3212 	unsigned long info = get_zeroed_page(GFP_KERNEL);
3213 	struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3214 	struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3215 	struct ccw_dev_id ccwid;
3216 	int level;
3217 
3218 	tid->chpid = card->info.chpid;
3219 	ccw_device_get_id(CARD_RDEV(card), &ccwid);
3220 	tid->ssid = ccwid.ssid;
3221 	tid->devno = ccwid.devno;
3222 	if (!info)
3223 		return;
3224 	level = stsi(NULL, 0, 0, 0);
3225 	if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3226 		tid->lparnr = info222->lpar_number;
3227 	if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3228 		EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3229 		memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3230 	}
3231 	free_page(info);
3232 	return;
3233 }
3234 
3235 static int qeth_hw_trap_cb(struct qeth_card *card,
3236 		struct qeth_reply *reply, unsigned long data)
3237 {
3238 	struct qeth_ipa_cmd *cmd;
3239 	__u16 rc;
3240 
3241 	cmd = (struct qeth_ipa_cmd *)data;
3242 	rc = cmd->hdr.return_code;
3243 	if (rc)
3244 		QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3245 	return 0;
3246 }
3247 
3248 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3249 {
3250 	struct qeth_cmd_buffer *iob;
3251 	struct qeth_ipa_cmd *cmd;
3252 
3253 	QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3254 	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3255 	if (!iob)
3256 		return -ENOMEM;
3257 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3258 	cmd->data.diagass.subcmd_len = 80;
3259 	cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3260 	cmd->data.diagass.type = 1;
3261 	cmd->data.diagass.action = action;
3262 	switch (action) {
3263 	case QETH_DIAGS_TRAP_ARM:
3264 		cmd->data.diagass.options = 0x0003;
3265 		cmd->data.diagass.ext = 0x00010000 +
3266 			sizeof(struct qeth_trap_id);
3267 		qeth_get_trap_id(card,
3268 			(struct qeth_trap_id *)cmd->data.diagass.cdata);
3269 		break;
3270 	case QETH_DIAGS_TRAP_DISARM:
3271 		cmd->data.diagass.options = 0x0001;
3272 		break;
3273 	case QETH_DIAGS_TRAP_CAPTURE:
3274 		break;
3275 	}
3276 	return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3277 }
3278 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3279 
3280 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3281 		unsigned int qdio_error, const char *dbftext)
3282 {
3283 	if (qdio_error) {
3284 		QETH_CARD_TEXT(card, 2, dbftext);
3285 		QETH_CARD_TEXT_(card, 2, " F15=%02X",
3286 			       buf->element[15].sflags);
3287 		QETH_CARD_TEXT_(card, 2, " F14=%02X",
3288 			       buf->element[14].sflags);
3289 		QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3290 		if ((buf->element[15].sflags) == 0x12) {
3291 			card->stats.rx_dropped++;
3292 			return 0;
3293 		} else
3294 			return 1;
3295 	}
3296 	return 0;
3297 }
3298 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3299 
3300 static void qeth_buffer_reclaim_work(struct work_struct *work)
3301 {
3302 	struct qeth_card *card = container_of(work, struct qeth_card,
3303 		buffer_reclaim_work.work);
3304 
3305 	QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3306 	qeth_queue_input_buffer(card, card->reclaim_index);
3307 }
3308 
3309 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3310 {
3311 	struct qeth_qdio_q *queue = card->qdio.in_q;
3312 	struct list_head *lh;
3313 	int count;
3314 	int i;
3315 	int rc;
3316 	int newcount = 0;
3317 
3318 	count = (index < queue->next_buf_to_init)?
3319 		card->qdio.in_buf_pool.buf_count -
3320 		(queue->next_buf_to_init - index) :
3321 		card->qdio.in_buf_pool.buf_count -
3322 		(queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3323 	/* only requeue at a certain threshold to avoid SIGAs */
3324 	if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3325 		for (i = queue->next_buf_to_init;
3326 		     i < queue->next_buf_to_init + count; ++i) {
3327 			if (qeth_init_input_buffer(card,
3328 				&queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3329 				break;
3330 			} else {
3331 				newcount++;
3332 			}
3333 		}
3334 
3335 		if (newcount < count) {
3336 			/* we are in memory shortage so we switch back to
3337 			   traditional skb allocation and drop packages */
3338 			atomic_set(&card->force_alloc_skb, 3);
3339 			count = newcount;
3340 		} else {
3341 			atomic_add_unless(&card->force_alloc_skb, -1, 0);
3342 		}
3343 
3344 		if (!count) {
3345 			i = 0;
3346 			list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3347 				i++;
3348 			if (i == card->qdio.in_buf_pool.buf_count) {
3349 				QETH_CARD_TEXT(card, 2, "qsarbw");
3350 				card->reclaim_index = index;
3351 				schedule_delayed_work(
3352 					&card->buffer_reclaim_work,
3353 					QETH_RECLAIM_WORK_TIME);
3354 			}
3355 			return;
3356 		}
3357 
3358 		/*
3359 		 * according to old code it should be avoided to requeue all
3360 		 * 128 buffers in order to benefit from PCI avoidance.
3361 		 * this function keeps at least one buffer (the buffer at
3362 		 * 'index') un-requeued -> this buffer is the first buffer that
3363 		 * will be requeued the next time
3364 		 */
3365 		if (card->options.performance_stats) {
3366 			card->perf_stats.inbound_do_qdio_cnt++;
3367 			card->perf_stats.inbound_do_qdio_start_time =
3368 				qeth_get_micros();
3369 		}
3370 		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3371 			     queue->next_buf_to_init, count);
3372 		if (card->options.performance_stats)
3373 			card->perf_stats.inbound_do_qdio_time +=
3374 				qeth_get_micros() -
3375 				card->perf_stats.inbound_do_qdio_start_time;
3376 		if (rc) {
3377 			QETH_CARD_TEXT(card, 2, "qinberr");
3378 		}
3379 		queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3380 					  QDIO_MAX_BUFFERS_PER_Q;
3381 	}
3382 }
3383 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3384 
3385 static int qeth_handle_send_error(struct qeth_card *card,
3386 		struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3387 {
3388 	int sbalf15 = buffer->buffer->element[15].sflags;
3389 
3390 	QETH_CARD_TEXT(card, 6, "hdsnderr");
3391 	if (card->info.type == QETH_CARD_TYPE_IQD) {
3392 		if (sbalf15 == 0) {
3393 			qdio_err = 0;
3394 		} else {
3395 			qdio_err = 1;
3396 		}
3397 	}
3398 	qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3399 
3400 	if (!qdio_err)
3401 		return QETH_SEND_ERROR_NONE;
3402 
3403 	if ((sbalf15 >= 15) && (sbalf15 <= 31))
3404 		return QETH_SEND_ERROR_RETRY;
3405 
3406 	QETH_CARD_TEXT(card, 1, "lnkfail");
3407 	QETH_CARD_TEXT_(card, 1, "%04x %02x",
3408 		       (u16)qdio_err, (u8)sbalf15);
3409 	return QETH_SEND_ERROR_LINK_FAILURE;
3410 }
3411 
3412 /*
3413  * Switched to packing state if the number of used buffers on a queue
3414  * reaches a certain limit.
3415  */
3416 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3417 {
3418 	if (!queue->do_pack) {
3419 		if (atomic_read(&queue->used_buffers)
3420 		    >= QETH_HIGH_WATERMARK_PACK){
3421 			/* switch non-PACKING -> PACKING */
3422 			QETH_CARD_TEXT(queue->card, 6, "np->pack");
3423 			if (queue->card->options.performance_stats)
3424 				queue->card->perf_stats.sc_dp_p++;
3425 			queue->do_pack = 1;
3426 		}
3427 	}
3428 }
3429 
3430 /*
3431  * Switches from packing to non-packing mode. If there is a packing
3432  * buffer on the queue this buffer will be prepared to be flushed.
3433  * In that case 1 is returned to inform the caller. If no buffer
3434  * has to be flushed, zero is returned.
3435  */
3436 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3437 {
3438 	struct qeth_qdio_out_buffer *buffer;
3439 	int flush_count = 0;
3440 
3441 	if (queue->do_pack) {
3442 		if (atomic_read(&queue->used_buffers)
3443 		    <= QETH_LOW_WATERMARK_PACK) {
3444 			/* switch PACKING -> non-PACKING */
3445 			QETH_CARD_TEXT(queue->card, 6, "pack->np");
3446 			if (queue->card->options.performance_stats)
3447 				queue->card->perf_stats.sc_p_dp++;
3448 			queue->do_pack = 0;
3449 			/* flush packing buffers */
3450 			buffer = queue->bufs[queue->next_buf_to_fill];
3451 			if ((atomic_read(&buffer->state) ==
3452 						QETH_QDIO_BUF_EMPTY) &&
3453 			    (buffer->next_element_to_fill > 0)) {
3454 				atomic_set(&buffer->state,
3455 					   QETH_QDIO_BUF_PRIMED);
3456 				flush_count++;
3457 				queue->next_buf_to_fill =
3458 					(queue->next_buf_to_fill + 1) %
3459 					QDIO_MAX_BUFFERS_PER_Q;
3460 			}
3461 		}
3462 	}
3463 	return flush_count;
3464 }
3465 
3466 
3467 /*
3468  * Called to flush a packing buffer if no more pci flags are on the queue.
3469  * Checks if there is a packing buffer and prepares it to be flushed.
3470  * In that case returns 1, otherwise zero.
3471  */
3472 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3473 {
3474 	struct qeth_qdio_out_buffer *buffer;
3475 
3476 	buffer = queue->bufs[queue->next_buf_to_fill];
3477 	if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3478 	   (buffer->next_element_to_fill > 0)) {
3479 		/* it's a packing buffer */
3480 		atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3481 		queue->next_buf_to_fill =
3482 			(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3483 		return 1;
3484 	}
3485 	return 0;
3486 }
3487 
3488 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3489 			       int count)
3490 {
3491 	struct qeth_qdio_out_buffer *buf;
3492 	int rc;
3493 	int i;
3494 	unsigned int qdio_flags;
3495 
3496 	for (i = index; i < index + count; ++i) {
3497 		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3498 		buf = queue->bufs[bidx];
3499 		buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3500 				SBAL_EFLAGS_LAST_ENTRY;
3501 
3502 		if (queue->bufstates)
3503 			queue->bufstates[bidx].user = buf;
3504 
3505 		if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3506 			continue;
3507 
3508 		if (!queue->do_pack) {
3509 			if ((atomic_read(&queue->used_buffers) >=
3510 				(QETH_HIGH_WATERMARK_PACK -
3511 				 QETH_WATERMARK_PACK_FUZZ)) &&
3512 			    !atomic_read(&queue->set_pci_flags_count)) {
3513 				/* it's likely that we'll go to packing
3514 				 * mode soon */
3515 				atomic_inc(&queue->set_pci_flags_count);
3516 				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3517 			}
3518 		} else {
3519 			if (!atomic_read(&queue->set_pci_flags_count)) {
3520 				/*
3521 				 * there's no outstanding PCI any more, so we
3522 				 * have to request a PCI to be sure the the PCI
3523 				 * will wake at some time in the future then we
3524 				 * can flush packed buffers that might still be
3525 				 * hanging around, which can happen if no
3526 				 * further send was requested by the stack
3527 				 */
3528 				atomic_inc(&queue->set_pci_flags_count);
3529 				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3530 			}
3531 		}
3532 	}
3533 
3534 	queue->card->dev->trans_start = jiffies;
3535 	if (queue->card->options.performance_stats) {
3536 		queue->card->perf_stats.outbound_do_qdio_cnt++;
3537 		queue->card->perf_stats.outbound_do_qdio_start_time =
3538 			qeth_get_micros();
3539 	}
3540 	qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3541 	if (atomic_read(&queue->set_pci_flags_count))
3542 		qdio_flags |= QDIO_FLAG_PCI_OUT;
3543 	rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3544 		     queue->queue_no, index, count);
3545 	if (queue->card->options.performance_stats)
3546 		queue->card->perf_stats.outbound_do_qdio_time +=
3547 			qeth_get_micros() -
3548 			queue->card->perf_stats.outbound_do_qdio_start_time;
3549 	atomic_add(count, &queue->used_buffers);
3550 	if (rc) {
3551 		queue->card->stats.tx_errors += count;
3552 		/* ignore temporary SIGA errors without busy condition */
3553 		if (rc == -ENOBUFS)
3554 			return;
3555 		QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3556 		QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3557 		QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3558 		QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3559 		QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3560 
3561 		/* this must not happen under normal circumstances. if it
3562 		 * happens something is really wrong -> recover */
3563 		qeth_schedule_recovery(queue->card);
3564 		return;
3565 	}
3566 	if (queue->card->options.performance_stats)
3567 		queue->card->perf_stats.bufs_sent += count;
3568 }
3569 
3570 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3571 {
3572 	int index;
3573 	int flush_cnt = 0;
3574 	int q_was_packing = 0;
3575 
3576 	/*
3577 	 * check if weed have to switch to non-packing mode or if
3578 	 * we have to get a pci flag out on the queue
3579 	 */
3580 	if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3581 	    !atomic_read(&queue->set_pci_flags_count)) {
3582 		if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3583 				QETH_OUT_Q_UNLOCKED) {
3584 			/*
3585 			 * If we get in here, there was no action in
3586 			 * do_send_packet. So, we check if there is a
3587 			 * packing buffer to be flushed here.
3588 			 */
3589 			netif_stop_queue(queue->card->dev);
3590 			index = queue->next_buf_to_fill;
3591 			q_was_packing = queue->do_pack;
3592 			/* queue->do_pack may change */
3593 			barrier();
3594 			flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3595 			if (!flush_cnt &&
3596 			    !atomic_read(&queue->set_pci_flags_count))
3597 				flush_cnt +=
3598 					qeth_flush_buffers_on_no_pci(queue);
3599 			if (queue->card->options.performance_stats &&
3600 			    q_was_packing)
3601 				queue->card->perf_stats.bufs_sent_pack +=
3602 					flush_cnt;
3603 			if (flush_cnt)
3604 				qeth_flush_buffers(queue, index, flush_cnt);
3605 			atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3606 		}
3607 	}
3608 }
3609 
3610 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3611 		unsigned long card_ptr)
3612 {
3613 	struct qeth_card *card = (struct qeth_card *)card_ptr;
3614 
3615 	if (card->dev && (card->dev->flags & IFF_UP))
3616 		napi_schedule(&card->napi);
3617 }
3618 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3619 
3620 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3621 {
3622 	int rc;
3623 
3624 	if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3625 		rc = -1;
3626 		goto out;
3627 	} else {
3628 		if (card->options.cq == cq) {
3629 			rc = 0;
3630 			goto out;
3631 		}
3632 
3633 		if (card->state != CARD_STATE_DOWN &&
3634 		    card->state != CARD_STATE_RECOVER) {
3635 			rc = -1;
3636 			goto out;
3637 		}
3638 
3639 		qeth_free_qdio_buffers(card);
3640 		card->options.cq = cq;
3641 		rc = 0;
3642 	}
3643 out:
3644 	return rc;
3645 
3646 }
3647 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3648 
3649 
3650 static void qeth_qdio_cq_handler(struct qeth_card *card,
3651 		unsigned int qdio_err,
3652 		unsigned int queue, int first_element, int count) {
3653 	struct qeth_qdio_q *cq = card->qdio.c_q;
3654 	int i;
3655 	int rc;
3656 
3657 	if (!qeth_is_cq(card, queue))
3658 		goto out;
3659 
3660 	QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3661 	QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3662 	QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3663 
3664 	if (qdio_err) {
3665 		netif_stop_queue(card->dev);
3666 		qeth_schedule_recovery(card);
3667 		goto out;
3668 	}
3669 
3670 	if (card->options.performance_stats) {
3671 		card->perf_stats.cq_cnt++;
3672 		card->perf_stats.cq_start_time = qeth_get_micros();
3673 	}
3674 
3675 	for (i = first_element; i < first_element + count; ++i) {
3676 		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3677 		struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3678 		int e;
3679 
3680 		e = 0;
3681 		while (buffer->element[e].addr) {
3682 			unsigned long phys_aob_addr;
3683 
3684 			phys_aob_addr = (unsigned long) buffer->element[e].addr;
3685 			qeth_qdio_handle_aob(card, phys_aob_addr);
3686 			buffer->element[e].addr = NULL;
3687 			buffer->element[e].eflags = 0;
3688 			buffer->element[e].sflags = 0;
3689 			buffer->element[e].length = 0;
3690 
3691 			++e;
3692 		}
3693 
3694 		buffer->element[15].eflags = 0;
3695 		buffer->element[15].sflags = 0;
3696 	}
3697 	rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3698 		    card->qdio.c_q->next_buf_to_init,
3699 		    count);
3700 	if (rc) {
3701 		dev_warn(&card->gdev->dev,
3702 			"QDIO reported an error, rc=%i\n", rc);
3703 		QETH_CARD_TEXT(card, 2, "qcqherr");
3704 	}
3705 	card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3706 				   + count) % QDIO_MAX_BUFFERS_PER_Q;
3707 
3708 	netif_wake_queue(card->dev);
3709 
3710 	if (card->options.performance_stats) {
3711 		int delta_t = qeth_get_micros();
3712 		delta_t -= card->perf_stats.cq_start_time;
3713 		card->perf_stats.cq_time += delta_t;
3714 	}
3715 out:
3716 	return;
3717 }
3718 
3719 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3720 		unsigned int queue, int first_elem, int count,
3721 		unsigned long card_ptr)
3722 {
3723 	struct qeth_card *card = (struct qeth_card *)card_ptr;
3724 
3725 	QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3726 	QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3727 
3728 	if (qeth_is_cq(card, queue))
3729 		qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3730 	else if (qdio_err)
3731 		qeth_schedule_recovery(card);
3732 
3733 
3734 }
3735 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3736 
3737 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3738 		unsigned int qdio_error, int __queue, int first_element,
3739 		int count, unsigned long card_ptr)
3740 {
3741 	struct qeth_card *card        = (struct qeth_card *) card_ptr;
3742 	struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3743 	struct qeth_qdio_out_buffer *buffer;
3744 	int i;
3745 
3746 	QETH_CARD_TEXT(card, 6, "qdouhdl");
3747 	if (qdio_error & QDIO_ERROR_FATAL) {
3748 		QETH_CARD_TEXT(card, 2, "achkcond");
3749 		netif_stop_queue(card->dev);
3750 		qeth_schedule_recovery(card);
3751 		return;
3752 	}
3753 	if (card->options.performance_stats) {
3754 		card->perf_stats.outbound_handler_cnt++;
3755 		card->perf_stats.outbound_handler_start_time =
3756 			qeth_get_micros();
3757 	}
3758 	for (i = first_element; i < (first_element + count); ++i) {
3759 		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3760 		buffer = queue->bufs[bidx];
3761 		qeth_handle_send_error(card, buffer, qdio_error);
3762 
3763 		if (queue->bufstates &&
3764 		    (queue->bufstates[bidx].flags &
3765 		     QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3766 			WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3767 
3768 			if (atomic_cmpxchg(&buffer->state,
3769 					   QETH_QDIO_BUF_PRIMED,
3770 					   QETH_QDIO_BUF_PENDING) ==
3771 				QETH_QDIO_BUF_PRIMED) {
3772 				qeth_notify_skbs(queue, buffer,
3773 						 TX_NOTIFY_PENDING);
3774 			}
3775 			buffer->aob = queue->bufstates[bidx].aob;
3776 			QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3777 			QETH_CARD_TEXT(queue->card, 5, "aob");
3778 			QETH_CARD_TEXT_(queue->card, 5, "%lx",
3779 					virt_to_phys(buffer->aob));
3780 			if (qeth_init_qdio_out_buf(queue, bidx)) {
3781 				QETH_CARD_TEXT(card, 2, "outofbuf");
3782 				qeth_schedule_recovery(card);
3783 			}
3784 		} else {
3785 			if (card->options.cq == QETH_CQ_ENABLED) {
3786 				enum iucv_tx_notify n;
3787 
3788 				n = qeth_compute_cq_notification(
3789 					buffer->buffer->element[15].sflags, 0);
3790 				qeth_notify_skbs(queue, buffer, n);
3791 			}
3792 
3793 			qeth_clear_output_buffer(queue, buffer,
3794 						QETH_QDIO_BUF_EMPTY);
3795 		}
3796 		qeth_cleanup_handled_pending(queue, bidx, 0);
3797 	}
3798 	atomic_sub(count, &queue->used_buffers);
3799 	/* check if we need to do something on this outbound queue */
3800 	if (card->info.type != QETH_CARD_TYPE_IQD)
3801 		qeth_check_outbound_queue(queue);
3802 
3803 	netif_wake_queue(queue->card->dev);
3804 	if (card->options.performance_stats)
3805 		card->perf_stats.outbound_handler_time += qeth_get_micros() -
3806 			card->perf_stats.outbound_handler_start_time;
3807 }
3808 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3809 
3810 /**
3811  * Note: Function assumes that we have 4 outbound queues.
3812  */
3813 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3814 			int ipv, int cast_type)
3815 {
3816 	__be16 *tci;
3817 	u8 tos;
3818 
3819 	if (cast_type && card->info.is_multicast_different)
3820 		return card->info.is_multicast_different &
3821 			(card->qdio.no_out_queues - 1);
3822 
3823 	switch (card->qdio.do_prio_queueing) {
3824 	case QETH_PRIO_Q_ING_TOS:
3825 	case QETH_PRIO_Q_ING_PREC:
3826 		switch (ipv) {
3827 		case 4:
3828 			tos = ipv4_get_dsfield(ip_hdr(skb));
3829 			break;
3830 		case 6:
3831 			tos = ipv6_get_dsfield(ipv6_hdr(skb));
3832 			break;
3833 		default:
3834 			return card->qdio.default_out_queue;
3835 		}
3836 		if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3837 			return ~tos >> 6 & 3;
3838 		if (tos & IPTOS_MINCOST)
3839 			return 3;
3840 		if (tos & IPTOS_RELIABILITY)
3841 			return 2;
3842 		if (tos & IPTOS_THROUGHPUT)
3843 			return 1;
3844 		if (tos & IPTOS_LOWDELAY)
3845 			return 0;
3846 		break;
3847 	case QETH_PRIO_Q_ING_SKB:
3848 		if (skb->priority > 5)
3849 			return 0;
3850 		return ~skb->priority >> 1 & 3;
3851 	case QETH_PRIO_Q_ING_VLAN:
3852 		tci = &((struct ethhdr *)skb->data)->h_proto;
3853 		if (*tci == ETH_P_8021Q)
3854 			return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3855 		break;
3856 	default:
3857 		break;
3858 	}
3859 	return card->qdio.default_out_queue;
3860 }
3861 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3862 
3863 int qeth_get_elements_for_frags(struct sk_buff *skb)
3864 {
3865 	int cnt, length, e, elements = 0;
3866 	struct skb_frag_struct *frag;
3867 	char *data;
3868 
3869 	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3870 		frag = &skb_shinfo(skb)->frags[cnt];
3871 		data = (char *)page_to_phys(skb_frag_page(frag)) +
3872 			frag->page_offset;
3873 		length = frag->size;
3874 		e = PFN_UP((unsigned long)data + length - 1) -
3875 			PFN_DOWN((unsigned long)data);
3876 		elements += e;
3877 	}
3878 	return elements;
3879 }
3880 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3881 
3882 int qeth_get_elements_no(struct qeth_card *card,
3883 		     struct sk_buff *skb, int elems)
3884 {
3885 	int dlen = skb->len - skb->data_len;
3886 	int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3887 		PFN_DOWN((unsigned long)skb->data);
3888 
3889 	elements_needed += qeth_get_elements_for_frags(skb);
3890 
3891 	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3892 		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3893 			"(Number=%d / Length=%d). Discarded.\n",
3894 			(elements_needed+elems), skb->len);
3895 		return 0;
3896 	}
3897 	return elements_needed;
3898 }
3899 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3900 
3901 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3902 {
3903 	int hroom, inpage, rest;
3904 
3905 	if (((unsigned long)skb->data & PAGE_MASK) !=
3906 	    (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3907 		hroom = skb_headroom(skb);
3908 		inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3909 		rest = len - inpage;
3910 		if (rest > hroom)
3911 			return 1;
3912 		memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3913 		skb->data -= rest;
3914 		skb->tail -= rest;
3915 		*hdr = (struct qeth_hdr *)skb->data;
3916 		QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3917 	}
3918 	return 0;
3919 }
3920 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3921 
3922 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3923 	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3924 	int offset)
3925 {
3926 	int length = skb->len - skb->data_len;
3927 	int length_here;
3928 	int element;
3929 	char *data;
3930 	int first_lap, cnt;
3931 	struct skb_frag_struct *frag;
3932 
3933 	element = *next_element_to_fill;
3934 	data = skb->data;
3935 	first_lap = (is_tso == 0 ? 1 : 0);
3936 
3937 	if (offset >= 0) {
3938 		data = skb->data + offset;
3939 		length -= offset;
3940 		first_lap = 0;
3941 	}
3942 
3943 	while (length > 0) {
3944 		/* length_here is the remaining amount of data in this page */
3945 		length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3946 		if (length < length_here)
3947 			length_here = length;
3948 
3949 		buffer->element[element].addr = data;
3950 		buffer->element[element].length = length_here;
3951 		length -= length_here;
3952 		if (!length) {
3953 			if (first_lap)
3954 				if (skb_shinfo(skb)->nr_frags)
3955 					buffer->element[element].eflags =
3956 						SBAL_EFLAGS_FIRST_FRAG;
3957 				else
3958 					buffer->element[element].eflags = 0;
3959 			else
3960 				buffer->element[element].eflags =
3961 				    SBAL_EFLAGS_MIDDLE_FRAG;
3962 		} else {
3963 			if (first_lap)
3964 				buffer->element[element].eflags =
3965 				    SBAL_EFLAGS_FIRST_FRAG;
3966 			else
3967 				buffer->element[element].eflags =
3968 				    SBAL_EFLAGS_MIDDLE_FRAG;
3969 		}
3970 		data += length_here;
3971 		element++;
3972 		first_lap = 0;
3973 	}
3974 
3975 	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3976 		frag = &skb_shinfo(skb)->frags[cnt];
3977 		data = (char *)page_to_phys(skb_frag_page(frag)) +
3978 			frag->page_offset;
3979 		length = frag->size;
3980 		while (length > 0) {
3981 			length_here = PAGE_SIZE -
3982 				((unsigned long) data % PAGE_SIZE);
3983 			if (length < length_here)
3984 				length_here = length;
3985 
3986 			buffer->element[element].addr = data;
3987 			buffer->element[element].length = length_here;
3988 			buffer->element[element].eflags =
3989 				SBAL_EFLAGS_MIDDLE_FRAG;
3990 			length -= length_here;
3991 			data += length_here;
3992 			element++;
3993 		}
3994 	}
3995 
3996 	if (buffer->element[element - 1].eflags)
3997 		buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3998 	*next_element_to_fill = element;
3999 }
4000 
4001 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4002 		struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
4003 		struct qeth_hdr *hdr, int offset, int hd_len)
4004 {
4005 	struct qdio_buffer *buffer;
4006 	int flush_cnt = 0, hdr_len, large_send = 0;
4007 
4008 	buffer = buf->buffer;
4009 	atomic_inc(&skb->users);
4010 	skb_queue_tail(&buf->skb_list, skb);
4011 
4012 	/*check first on TSO ....*/
4013 	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
4014 		int element = buf->next_element_to_fill;
4015 
4016 		hdr_len = sizeof(struct qeth_hdr_tso) +
4017 			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
4018 		/*fill first buffer entry only with header information */
4019 		buffer->element[element].addr = skb->data;
4020 		buffer->element[element].length = hdr_len;
4021 		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4022 		buf->next_element_to_fill++;
4023 		skb->data += hdr_len;
4024 		skb->len  -= hdr_len;
4025 		large_send = 1;
4026 	}
4027 
4028 	if (offset >= 0) {
4029 		int element = buf->next_element_to_fill;
4030 		buffer->element[element].addr = hdr;
4031 		buffer->element[element].length = sizeof(struct qeth_hdr) +
4032 							hd_len;
4033 		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4034 		buf->is_header[element] = 1;
4035 		buf->next_element_to_fill++;
4036 	}
4037 
4038 	__qeth_fill_buffer(skb, buffer, large_send,
4039 		(int *)&buf->next_element_to_fill, offset);
4040 
4041 	if (!queue->do_pack) {
4042 		QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4043 		/* set state to PRIMED -> will be flushed */
4044 		atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4045 		flush_cnt = 1;
4046 	} else {
4047 		QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4048 		if (queue->card->options.performance_stats)
4049 			queue->card->perf_stats.skbs_sent_pack++;
4050 		if (buf->next_element_to_fill >=
4051 				QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4052 			/*
4053 			 * packed buffer if full -> set state PRIMED
4054 			 * -> will be flushed
4055 			 */
4056 			atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4057 			flush_cnt = 1;
4058 		}
4059 	}
4060 	return flush_cnt;
4061 }
4062 
4063 int qeth_do_send_packet_fast(struct qeth_card *card,
4064 		struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4065 		struct qeth_hdr *hdr, int elements_needed,
4066 		int offset, int hd_len)
4067 {
4068 	struct qeth_qdio_out_buffer *buffer;
4069 	int index;
4070 
4071 	/* spin until we get the queue ... */
4072 	while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4073 			      QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4074 	/* ... now we've got the queue */
4075 	index = queue->next_buf_to_fill;
4076 	buffer = queue->bufs[queue->next_buf_to_fill];
4077 	/*
4078 	 * check if buffer is empty to make sure that we do not 'overtake'
4079 	 * ourselves and try to fill a buffer that is already primed
4080 	 */
4081 	if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4082 		goto out;
4083 	queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4084 					  QDIO_MAX_BUFFERS_PER_Q;
4085 	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4086 	qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4087 	qeth_flush_buffers(queue, index, 1);
4088 	return 0;
4089 out:
4090 	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4091 	return -EBUSY;
4092 }
4093 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4094 
4095 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4096 		struct sk_buff *skb, struct qeth_hdr *hdr,
4097 		int elements_needed)
4098 {
4099 	struct qeth_qdio_out_buffer *buffer;
4100 	int start_index;
4101 	int flush_count = 0;
4102 	int do_pack = 0;
4103 	int tmp;
4104 	int rc = 0;
4105 
4106 	/* spin until we get the queue ... */
4107 	while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4108 			      QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4109 	start_index = queue->next_buf_to_fill;
4110 	buffer = queue->bufs[queue->next_buf_to_fill];
4111 	/*
4112 	 * check if buffer is empty to make sure that we do not 'overtake'
4113 	 * ourselves and try to fill a buffer that is already primed
4114 	 */
4115 	if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4116 		atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4117 		return -EBUSY;
4118 	}
4119 	/* check if we need to switch packing state of this queue */
4120 	qeth_switch_to_packing_if_needed(queue);
4121 	if (queue->do_pack) {
4122 		do_pack = 1;
4123 		/* does packet fit in current buffer? */
4124 		if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4125 		    buffer->next_element_to_fill) < elements_needed) {
4126 			/* ... no -> set state PRIMED */
4127 			atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4128 			flush_count++;
4129 			queue->next_buf_to_fill =
4130 				(queue->next_buf_to_fill + 1) %
4131 				QDIO_MAX_BUFFERS_PER_Q;
4132 			buffer = queue->bufs[queue->next_buf_to_fill];
4133 			/* we did a step forward, so check buffer state
4134 			 * again */
4135 			if (atomic_read(&buffer->state) !=
4136 			    QETH_QDIO_BUF_EMPTY) {
4137 				qeth_flush_buffers(queue, start_index,
4138 							   flush_count);
4139 				atomic_set(&queue->state,
4140 						QETH_OUT_Q_UNLOCKED);
4141 				return -EBUSY;
4142 			}
4143 		}
4144 	}
4145 	tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4146 	queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4147 				  QDIO_MAX_BUFFERS_PER_Q;
4148 	flush_count += tmp;
4149 	if (flush_count)
4150 		qeth_flush_buffers(queue, start_index, flush_count);
4151 	else if (!atomic_read(&queue->set_pci_flags_count))
4152 		atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4153 	/*
4154 	 * queue->state will go from LOCKED -> UNLOCKED or from
4155 	 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4156 	 * (switch packing state or flush buffer to get another pci flag out).
4157 	 * In that case we will enter this loop
4158 	 */
4159 	while (atomic_dec_return(&queue->state)) {
4160 		flush_count = 0;
4161 		start_index = queue->next_buf_to_fill;
4162 		/* check if we can go back to non-packing state */
4163 		flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4164 		/*
4165 		 * check if we need to flush a packing buffer to get a pci
4166 		 * flag out on the queue
4167 		 */
4168 		if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4169 			flush_count += qeth_flush_buffers_on_no_pci(queue);
4170 		if (flush_count)
4171 			qeth_flush_buffers(queue, start_index, flush_count);
4172 	}
4173 	/* at this point the queue is UNLOCKED again */
4174 	if (queue->card->options.performance_stats && do_pack)
4175 		queue->card->perf_stats.bufs_sent_pack += flush_count;
4176 
4177 	return rc;
4178 }
4179 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4180 
4181 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4182 		struct qeth_reply *reply, unsigned long data)
4183 {
4184 	struct qeth_ipa_cmd *cmd;
4185 	struct qeth_ipacmd_setadpparms *setparms;
4186 
4187 	QETH_CARD_TEXT(card, 4, "prmadpcb");
4188 
4189 	cmd = (struct qeth_ipa_cmd *) data;
4190 	setparms = &(cmd->data.setadapterparms);
4191 
4192 	qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4193 	if (cmd->hdr.return_code) {
4194 		QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4195 		setparms->data.mode = SET_PROMISC_MODE_OFF;
4196 	}
4197 	card->info.promisc_mode = setparms->data.mode;
4198 	return 0;
4199 }
4200 
4201 void qeth_setadp_promisc_mode(struct qeth_card *card)
4202 {
4203 	enum qeth_ipa_promisc_modes mode;
4204 	struct net_device *dev = card->dev;
4205 	struct qeth_cmd_buffer *iob;
4206 	struct qeth_ipa_cmd *cmd;
4207 
4208 	QETH_CARD_TEXT(card, 4, "setprom");
4209 
4210 	if (((dev->flags & IFF_PROMISC) &&
4211 	     (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4212 	    (!(dev->flags & IFF_PROMISC) &&
4213 	     (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4214 		return;
4215 	mode = SET_PROMISC_MODE_OFF;
4216 	if (dev->flags & IFF_PROMISC)
4217 		mode = SET_PROMISC_MODE_ON;
4218 	QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4219 
4220 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4221 			sizeof(struct qeth_ipacmd_setadpparms));
4222 	if (!iob)
4223 		return;
4224 	cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4225 	cmd->data.setadapterparms.data.mode = mode;
4226 	qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4227 }
4228 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4229 
4230 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4231 {
4232 	struct qeth_card *card;
4233 	char dbf_text[15];
4234 
4235 	card = dev->ml_priv;
4236 
4237 	QETH_CARD_TEXT(card, 4, "chgmtu");
4238 	sprintf(dbf_text, "%8x", new_mtu);
4239 	QETH_CARD_TEXT(card, 4, dbf_text);
4240 
4241 	if (new_mtu < 64)
4242 		return -EINVAL;
4243 	if (new_mtu > 65535)
4244 		return -EINVAL;
4245 	if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4246 	    (!qeth_mtu_is_valid(card, new_mtu)))
4247 		return -EINVAL;
4248 	dev->mtu = new_mtu;
4249 	return 0;
4250 }
4251 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4252 
4253 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4254 {
4255 	struct qeth_card *card;
4256 
4257 	card = dev->ml_priv;
4258 
4259 	QETH_CARD_TEXT(card, 5, "getstat");
4260 
4261 	return &card->stats;
4262 }
4263 EXPORT_SYMBOL_GPL(qeth_get_stats);
4264 
4265 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4266 		struct qeth_reply *reply, unsigned long data)
4267 {
4268 	struct qeth_ipa_cmd *cmd;
4269 
4270 	QETH_CARD_TEXT(card, 4, "chgmaccb");
4271 
4272 	cmd = (struct qeth_ipa_cmd *) data;
4273 	if (!card->options.layer2 ||
4274 	    !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4275 		memcpy(card->dev->dev_addr,
4276 		       &cmd->data.setadapterparms.data.change_addr.addr,
4277 		       OSA_ADDR_LEN);
4278 		card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4279 	}
4280 	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4281 	return 0;
4282 }
4283 
4284 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4285 {
4286 	int rc;
4287 	struct qeth_cmd_buffer *iob;
4288 	struct qeth_ipa_cmd *cmd;
4289 
4290 	QETH_CARD_TEXT(card, 4, "chgmac");
4291 
4292 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4293 				   sizeof(struct qeth_ipacmd_setadpparms));
4294 	if (!iob)
4295 		return -ENOMEM;
4296 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4297 	cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4298 	cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4299 	memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4300 	       card->dev->dev_addr, OSA_ADDR_LEN);
4301 	rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4302 			       NULL);
4303 	return rc;
4304 }
4305 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4306 
4307 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4308 		struct qeth_reply *reply, unsigned long data)
4309 {
4310 	struct qeth_ipa_cmd *cmd;
4311 	struct qeth_set_access_ctrl *access_ctrl_req;
4312 	int fallback = *(int *)reply->param;
4313 
4314 	QETH_CARD_TEXT(card, 4, "setaccb");
4315 
4316 	cmd = (struct qeth_ipa_cmd *) data;
4317 	access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4318 	QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4319 	QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4320 	QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4321 		cmd->data.setadapterparms.hdr.return_code);
4322 	if (cmd->data.setadapterparms.hdr.return_code !=
4323 						SET_ACCESS_CTRL_RC_SUCCESS)
4324 		QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4325 				card->gdev->dev.kobj.name,
4326 				access_ctrl_req->subcmd_code,
4327 				cmd->data.setadapterparms.hdr.return_code);
4328 	switch (cmd->data.setadapterparms.hdr.return_code) {
4329 	case SET_ACCESS_CTRL_RC_SUCCESS:
4330 		if (card->options.isolation == ISOLATION_MODE_NONE) {
4331 			dev_info(&card->gdev->dev,
4332 			    "QDIO data connection isolation is deactivated\n");
4333 		} else {
4334 			dev_info(&card->gdev->dev,
4335 			    "QDIO data connection isolation is activated\n");
4336 		}
4337 		break;
4338 	case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4339 		QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4340 				"deactivated\n", dev_name(&card->gdev->dev));
4341 		if (fallback)
4342 			card->options.isolation = card->options.prev_isolation;
4343 		break;
4344 	case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4345 		QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4346 				" activated\n", dev_name(&card->gdev->dev));
4347 		if (fallback)
4348 			card->options.isolation = card->options.prev_isolation;
4349 		break;
4350 	case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4351 		dev_err(&card->gdev->dev, "Adapter does not "
4352 			"support QDIO data connection isolation\n");
4353 		break;
4354 	case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4355 		dev_err(&card->gdev->dev,
4356 			"Adapter is dedicated. "
4357 			"QDIO data connection isolation not supported\n");
4358 		if (fallback)
4359 			card->options.isolation = card->options.prev_isolation;
4360 		break;
4361 	case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4362 		dev_err(&card->gdev->dev,
4363 			"TSO does not permit QDIO data connection isolation\n");
4364 		if (fallback)
4365 			card->options.isolation = card->options.prev_isolation;
4366 		break;
4367 	case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4368 		dev_err(&card->gdev->dev, "The adjacent switch port does not "
4369 			"support reflective relay mode\n");
4370 		if (fallback)
4371 			card->options.isolation = card->options.prev_isolation;
4372 		break;
4373 	case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4374 		dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4375 					"enabled at the adjacent switch port");
4376 		if (fallback)
4377 			card->options.isolation = card->options.prev_isolation;
4378 		break;
4379 	case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4380 		dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4381 					"at the adjacent switch failed\n");
4382 		break;
4383 	default:
4384 		/* this should never happen */
4385 		if (fallback)
4386 			card->options.isolation = card->options.prev_isolation;
4387 		break;
4388 	}
4389 	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4390 	return 0;
4391 }
4392 
4393 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4394 		enum qeth_ipa_isolation_modes isolation, int fallback)
4395 {
4396 	int rc;
4397 	struct qeth_cmd_buffer *iob;
4398 	struct qeth_ipa_cmd *cmd;
4399 	struct qeth_set_access_ctrl *access_ctrl_req;
4400 
4401 	QETH_CARD_TEXT(card, 4, "setacctl");
4402 
4403 	QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4404 	QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4405 
4406 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4407 				   sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4408 				   sizeof(struct qeth_set_access_ctrl));
4409 	if (!iob)
4410 		return -ENOMEM;
4411 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4412 	access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4413 	access_ctrl_req->subcmd_code = isolation;
4414 
4415 	rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4416 			       &fallback);
4417 	QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4418 	return rc;
4419 }
4420 
4421 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4422 {
4423 	int rc = 0;
4424 
4425 	QETH_CARD_TEXT(card, 4, "setactlo");
4426 
4427 	if ((card->info.type == QETH_CARD_TYPE_OSD ||
4428 	     card->info.type == QETH_CARD_TYPE_OSX) &&
4429 	     qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4430 		rc = qeth_setadpparms_set_access_ctrl(card,
4431 			card->options.isolation, fallback);
4432 		if (rc) {
4433 			QETH_DBF_MESSAGE(3,
4434 				"IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4435 				card->gdev->dev.kobj.name,
4436 				rc);
4437 			rc = -EOPNOTSUPP;
4438 		}
4439 	} else if (card->options.isolation != ISOLATION_MODE_NONE) {
4440 		card->options.isolation = ISOLATION_MODE_NONE;
4441 
4442 		dev_err(&card->gdev->dev, "Adapter does not "
4443 			"support QDIO data connection isolation\n");
4444 		rc = -EOPNOTSUPP;
4445 	}
4446 	return rc;
4447 }
4448 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4449 
4450 void qeth_tx_timeout(struct net_device *dev)
4451 {
4452 	struct qeth_card *card;
4453 
4454 	card = dev->ml_priv;
4455 	QETH_CARD_TEXT(card, 4, "txtimeo");
4456 	card->stats.tx_errors++;
4457 	qeth_schedule_recovery(card);
4458 }
4459 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4460 
4461 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4462 {
4463 	struct qeth_card *card = dev->ml_priv;
4464 	int rc = 0;
4465 
4466 	switch (regnum) {
4467 	case MII_BMCR: /* Basic mode control register */
4468 		rc = BMCR_FULLDPLX;
4469 		if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4470 		    (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4471 		    (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4472 			rc |= BMCR_SPEED100;
4473 		break;
4474 	case MII_BMSR: /* Basic mode status register */
4475 		rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4476 		     BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4477 		     BMSR_100BASE4;
4478 		break;
4479 	case MII_PHYSID1: /* PHYS ID 1 */
4480 		rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4481 		     dev->dev_addr[2];
4482 		rc = (rc >> 5) & 0xFFFF;
4483 		break;
4484 	case MII_PHYSID2: /* PHYS ID 2 */
4485 		rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4486 		break;
4487 	case MII_ADVERTISE: /* Advertisement control reg */
4488 		rc = ADVERTISE_ALL;
4489 		break;
4490 	case MII_LPA: /* Link partner ability reg */
4491 		rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4492 		     LPA_100BASE4 | LPA_LPACK;
4493 		break;
4494 	case MII_EXPANSION: /* Expansion register */
4495 		break;
4496 	case MII_DCOUNTER: /* disconnect counter */
4497 		break;
4498 	case MII_FCSCOUNTER: /* false carrier counter */
4499 		break;
4500 	case MII_NWAYTEST: /* N-way auto-neg test register */
4501 		break;
4502 	case MII_RERRCOUNTER: /* rx error counter */
4503 		rc = card->stats.rx_errors;
4504 		break;
4505 	case MII_SREVISION: /* silicon revision */
4506 		break;
4507 	case MII_RESV1: /* reserved 1 */
4508 		break;
4509 	case MII_LBRERROR: /* loopback, rx, bypass error */
4510 		break;
4511 	case MII_PHYADDR: /* physical address */
4512 		break;
4513 	case MII_RESV2: /* reserved 2 */
4514 		break;
4515 	case MII_TPISTATUS: /* TPI status for 10mbps */
4516 		break;
4517 	case MII_NCONFIG: /* network interface config */
4518 		break;
4519 	default:
4520 		break;
4521 	}
4522 	return rc;
4523 }
4524 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4525 
4526 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4527 		struct qeth_cmd_buffer *iob, int len,
4528 		int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4529 			unsigned long),
4530 		void *reply_param)
4531 {
4532 	u16 s1, s2;
4533 
4534 	QETH_CARD_TEXT(card, 4, "sendsnmp");
4535 
4536 	memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4537 	memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4538 	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4539 	/* adjust PDU length fields in IPA_PDU_HEADER */
4540 	s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4541 	s2 = (u32) len;
4542 	memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4543 	memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4544 	memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4545 	memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4546 	return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4547 				      reply_cb, reply_param);
4548 }
4549 
4550 static int qeth_snmp_command_cb(struct qeth_card *card,
4551 		struct qeth_reply *reply, unsigned long sdata)
4552 {
4553 	struct qeth_ipa_cmd *cmd;
4554 	struct qeth_arp_query_info *qinfo;
4555 	struct qeth_snmp_cmd *snmp;
4556 	unsigned char *data;
4557 	__u16 data_len;
4558 
4559 	QETH_CARD_TEXT(card, 3, "snpcmdcb");
4560 
4561 	cmd = (struct qeth_ipa_cmd *) sdata;
4562 	data = (unsigned char *)((char *)cmd - reply->offset);
4563 	qinfo = (struct qeth_arp_query_info *) reply->param;
4564 	snmp = &cmd->data.setadapterparms.data.snmp;
4565 
4566 	if (cmd->hdr.return_code) {
4567 		QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4568 		return 0;
4569 	}
4570 	if (cmd->data.setadapterparms.hdr.return_code) {
4571 		cmd->hdr.return_code =
4572 			cmd->data.setadapterparms.hdr.return_code;
4573 		QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4574 		return 0;
4575 	}
4576 	data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4577 	if (cmd->data.setadapterparms.hdr.seq_no == 1)
4578 		data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4579 	else
4580 		data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4581 
4582 	/* check if there is enough room in userspace */
4583 	if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4584 		QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4585 		cmd->hdr.return_code = IPA_RC_ENOMEM;
4586 		return 0;
4587 	}
4588 	QETH_CARD_TEXT_(card, 4, "snore%i",
4589 		       cmd->data.setadapterparms.hdr.used_total);
4590 	QETH_CARD_TEXT_(card, 4, "sseqn%i",
4591 		cmd->data.setadapterparms.hdr.seq_no);
4592 	/*copy entries to user buffer*/
4593 	if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4594 		memcpy(qinfo->udata + qinfo->udata_offset,
4595 		       (char *)snmp,
4596 		       data_len + offsetof(struct qeth_snmp_cmd, data));
4597 		qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4598 	} else {
4599 		memcpy(qinfo->udata + qinfo->udata_offset,
4600 		       (char *)&snmp->request, data_len);
4601 	}
4602 	qinfo->udata_offset += data_len;
4603 	/* check if all replies received ... */
4604 		QETH_CARD_TEXT_(card, 4, "srtot%i",
4605 			       cmd->data.setadapterparms.hdr.used_total);
4606 		QETH_CARD_TEXT_(card, 4, "srseq%i",
4607 			       cmd->data.setadapterparms.hdr.seq_no);
4608 	if (cmd->data.setadapterparms.hdr.seq_no <
4609 	    cmd->data.setadapterparms.hdr.used_total)
4610 		return 1;
4611 	return 0;
4612 }
4613 
4614 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4615 {
4616 	struct qeth_cmd_buffer *iob;
4617 	struct qeth_ipa_cmd *cmd;
4618 	struct qeth_snmp_ureq *ureq;
4619 	unsigned int req_len;
4620 	struct qeth_arp_query_info qinfo = {0, };
4621 	int rc = 0;
4622 
4623 	QETH_CARD_TEXT(card, 3, "snmpcmd");
4624 
4625 	if (card->info.guestlan)
4626 		return -EOPNOTSUPP;
4627 
4628 	if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4629 	    (!card->options.layer2)) {
4630 		return -EOPNOTSUPP;
4631 	}
4632 	/* skip 4 bytes (data_len struct member) to get req_len */
4633 	if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4634 		return -EFAULT;
4635 	if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4636 		       sizeof(struct qeth_ipacmd_hdr) -
4637 		       sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4638 		return -EINVAL;
4639 	ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4640 	if (IS_ERR(ureq)) {
4641 		QETH_CARD_TEXT(card, 2, "snmpnome");
4642 		return PTR_ERR(ureq);
4643 	}
4644 	qinfo.udata_len = ureq->hdr.data_len;
4645 	qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4646 	if (!qinfo.udata) {
4647 		kfree(ureq);
4648 		return -ENOMEM;
4649 	}
4650 	qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4651 
4652 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4653 				   QETH_SNMP_SETADP_CMDLENGTH + req_len);
4654 	if (!iob) {
4655 		rc = -ENOMEM;
4656 		goto out;
4657 	}
4658 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4659 	memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4660 	rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4661 				    qeth_snmp_command_cb, (void *)&qinfo);
4662 	if (rc)
4663 		QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4664 			   QETH_CARD_IFNAME(card), rc);
4665 	else {
4666 		if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4667 			rc = -EFAULT;
4668 	}
4669 out:
4670 	kfree(ureq);
4671 	kfree(qinfo.udata);
4672 	return rc;
4673 }
4674 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4675 
4676 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4677 		struct qeth_reply *reply, unsigned long data)
4678 {
4679 	struct qeth_ipa_cmd *cmd;
4680 	struct qeth_qoat_priv *priv;
4681 	char *resdata;
4682 	int resdatalen;
4683 
4684 	QETH_CARD_TEXT(card, 3, "qoatcb");
4685 
4686 	cmd = (struct qeth_ipa_cmd *)data;
4687 	priv = (struct qeth_qoat_priv *)reply->param;
4688 	resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4689 	resdata = (char *)data + 28;
4690 
4691 	if (resdatalen > (priv->buffer_len - priv->response_len)) {
4692 		cmd->hdr.return_code = IPA_RC_FFFF;
4693 		return 0;
4694 	}
4695 
4696 	memcpy((priv->buffer + priv->response_len), resdata,
4697 		resdatalen);
4698 	priv->response_len += resdatalen;
4699 
4700 	if (cmd->data.setadapterparms.hdr.seq_no <
4701 	    cmd->data.setadapterparms.hdr.used_total)
4702 		return 1;
4703 	return 0;
4704 }
4705 
4706 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4707 {
4708 	int rc = 0;
4709 	struct qeth_cmd_buffer *iob;
4710 	struct qeth_ipa_cmd *cmd;
4711 	struct qeth_query_oat *oat_req;
4712 	struct qeth_query_oat_data oat_data;
4713 	struct qeth_qoat_priv priv;
4714 	void __user *tmp;
4715 
4716 	QETH_CARD_TEXT(card, 3, "qoatcmd");
4717 
4718 	if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4719 		rc = -EOPNOTSUPP;
4720 		goto out;
4721 	}
4722 
4723 	if (copy_from_user(&oat_data, udata,
4724 	    sizeof(struct qeth_query_oat_data))) {
4725 			rc = -EFAULT;
4726 			goto out;
4727 	}
4728 
4729 	priv.buffer_len = oat_data.buffer_len;
4730 	priv.response_len = 0;
4731 	priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4732 	if (!priv.buffer) {
4733 		rc = -ENOMEM;
4734 		goto out;
4735 	}
4736 
4737 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4738 				   sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4739 				   sizeof(struct qeth_query_oat));
4740 	if (!iob) {
4741 		rc = -ENOMEM;
4742 		goto out_free;
4743 	}
4744 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4745 	oat_req = &cmd->data.setadapterparms.data.query_oat;
4746 	oat_req->subcmd_code = oat_data.command;
4747 
4748 	rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4749 			       &priv);
4750 	if (!rc) {
4751 		if (is_compat_task())
4752 			tmp = compat_ptr(oat_data.ptr);
4753 		else
4754 			tmp = (void __user *)(unsigned long)oat_data.ptr;
4755 
4756 		if (copy_to_user(tmp, priv.buffer,
4757 		    priv.response_len)) {
4758 			rc = -EFAULT;
4759 			goto out_free;
4760 		}
4761 
4762 		oat_data.response_len = priv.response_len;
4763 
4764 		if (copy_to_user(udata, &oat_data,
4765 		    sizeof(struct qeth_query_oat_data)))
4766 			rc = -EFAULT;
4767 	} else
4768 		if (rc == IPA_RC_FFFF)
4769 			rc = -EFAULT;
4770 
4771 out_free:
4772 	kfree(priv.buffer);
4773 out:
4774 	return rc;
4775 }
4776 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4777 
4778 static int qeth_query_card_info_cb(struct qeth_card *card,
4779 				   struct qeth_reply *reply, unsigned long data)
4780 {
4781 	struct qeth_ipa_cmd *cmd;
4782 	struct qeth_query_card_info *card_info;
4783 	struct carrier_info *carrier_info;
4784 
4785 	QETH_CARD_TEXT(card, 2, "qcrdincb");
4786 	carrier_info = (struct carrier_info *)reply->param;
4787 	cmd = (struct qeth_ipa_cmd *)data;
4788 	card_info = &cmd->data.setadapterparms.data.card_info;
4789 	if (cmd->data.setadapterparms.hdr.return_code == 0) {
4790 		carrier_info->card_type = card_info->card_type;
4791 		carrier_info->port_mode = card_info->port_mode;
4792 		carrier_info->port_speed = card_info->port_speed;
4793 	}
4794 
4795 	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4796 	return 0;
4797 }
4798 
4799 static int qeth_query_card_info(struct qeth_card *card,
4800 				struct carrier_info *carrier_info)
4801 {
4802 	struct qeth_cmd_buffer *iob;
4803 
4804 	QETH_CARD_TEXT(card, 2, "qcrdinfo");
4805 	if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4806 		return -EOPNOTSUPP;
4807 	iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4808 		sizeof(struct qeth_ipacmd_setadpparms_hdr));
4809 	if (!iob)
4810 		return -ENOMEM;
4811 	return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4812 					(void *)carrier_info);
4813 }
4814 
4815 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4816 {
4817 	switch (card->info.type) {
4818 	case QETH_CARD_TYPE_IQD:
4819 		return 2;
4820 	default:
4821 		return 0;
4822 	}
4823 }
4824 
4825 static void qeth_determine_capabilities(struct qeth_card *card)
4826 {
4827 	int rc;
4828 	int length;
4829 	char *prcd;
4830 	struct ccw_device *ddev;
4831 	int ddev_offline = 0;
4832 
4833 	QETH_DBF_TEXT(SETUP, 2, "detcapab");
4834 	ddev = CARD_DDEV(card);
4835 	if (!ddev->online) {
4836 		ddev_offline = 1;
4837 		rc = ccw_device_set_online(ddev);
4838 		if (rc) {
4839 			QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4840 			goto out;
4841 		}
4842 	}
4843 
4844 	rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4845 	if (rc) {
4846 		QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4847 			dev_name(&card->gdev->dev), rc);
4848 		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4849 		goto out_offline;
4850 	}
4851 	qeth_configure_unitaddr(card, prcd);
4852 	if (ddev_offline)
4853 		qeth_configure_blkt_default(card, prcd);
4854 	kfree(prcd);
4855 
4856 	rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4857 	if (rc)
4858 		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4859 
4860 	QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4861 	QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4862 	QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4863 	QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4864 	if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4865 	    ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4866 	    ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4867 		dev_info(&card->gdev->dev,
4868 			"Completion Queueing supported\n");
4869 	} else {
4870 		card->options.cq = QETH_CQ_NOTAVAILABLE;
4871 	}
4872 
4873 
4874 out_offline:
4875 	if (ddev_offline == 1)
4876 		ccw_device_set_offline(ddev);
4877 out:
4878 	return;
4879 }
4880 
4881 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4882 	struct qdio_buffer **in_sbal_ptrs,
4883 	void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4884 	int i;
4885 
4886 	if (card->options.cq == QETH_CQ_ENABLED) {
4887 		int offset = QDIO_MAX_BUFFERS_PER_Q *
4888 			     (card->qdio.no_in_queues - 1);
4889 		i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4890 		for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4891 			in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4892 				virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4893 		}
4894 
4895 		queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4896 	}
4897 }
4898 
4899 static int qeth_qdio_establish(struct qeth_card *card)
4900 {
4901 	struct qdio_initialize init_data;
4902 	char *qib_param_field;
4903 	struct qdio_buffer **in_sbal_ptrs;
4904 	void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4905 	struct qdio_buffer **out_sbal_ptrs;
4906 	int i, j, k;
4907 	int rc = 0;
4908 
4909 	QETH_DBF_TEXT(SETUP, 2, "qdioest");
4910 
4911 	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4912 			      GFP_KERNEL);
4913 	if (!qib_param_field) {
4914 		rc =  -ENOMEM;
4915 		goto out_free_nothing;
4916 	}
4917 
4918 	qeth_create_qib_param_field(card, qib_param_field);
4919 	qeth_create_qib_param_field_blkt(card, qib_param_field);
4920 
4921 	in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4922 			       QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4923 			       GFP_KERNEL);
4924 	if (!in_sbal_ptrs) {
4925 		rc = -ENOMEM;
4926 		goto out_free_qib_param;
4927 	}
4928 	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4929 		in_sbal_ptrs[i] = (struct qdio_buffer *)
4930 			virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4931 	}
4932 
4933 	queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4934 				   GFP_KERNEL);
4935 	if (!queue_start_poll) {
4936 		rc = -ENOMEM;
4937 		goto out_free_in_sbals;
4938 	}
4939 	for (i = 0; i < card->qdio.no_in_queues; ++i)
4940 		queue_start_poll[i] = card->discipline->start_poll;
4941 
4942 	qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4943 
4944 	out_sbal_ptrs =
4945 		kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4946 			sizeof(void *), GFP_KERNEL);
4947 	if (!out_sbal_ptrs) {
4948 		rc = -ENOMEM;
4949 		goto out_free_queue_start_poll;
4950 	}
4951 	for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4952 		for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4953 			out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4954 				card->qdio.out_qs[i]->bufs[j]->buffer);
4955 		}
4956 
4957 	memset(&init_data, 0, sizeof(struct qdio_initialize));
4958 	init_data.cdev                   = CARD_DDEV(card);
4959 	init_data.q_format               = qeth_get_qdio_q_format(card);
4960 	init_data.qib_param_field_format = 0;
4961 	init_data.qib_param_field        = qib_param_field;
4962 	init_data.no_input_qs            = card->qdio.no_in_queues;
4963 	init_data.no_output_qs           = card->qdio.no_out_queues;
4964 	init_data.input_handler 	 = card->discipline->input_handler;
4965 	init_data.output_handler	 = card->discipline->output_handler;
4966 	init_data.queue_start_poll_array = queue_start_poll;
4967 	init_data.int_parm               = (unsigned long) card;
4968 	init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4969 	init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4970 	init_data.output_sbal_state_array = card->qdio.out_bufstates;
4971 	init_data.scan_threshold =
4972 		(card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4973 
4974 	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4975 		QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4976 		rc = qdio_allocate(&init_data);
4977 		if (rc) {
4978 			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4979 			goto out;
4980 		}
4981 		rc = qdio_establish(&init_data);
4982 		if (rc) {
4983 			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4984 			qdio_free(CARD_DDEV(card));
4985 		}
4986 	}
4987 
4988 	switch (card->options.cq) {
4989 	case QETH_CQ_ENABLED:
4990 		dev_info(&card->gdev->dev, "Completion Queue support enabled");
4991 		break;
4992 	case QETH_CQ_DISABLED:
4993 		dev_info(&card->gdev->dev, "Completion Queue support disabled");
4994 		break;
4995 	default:
4996 		break;
4997 	}
4998 out:
4999 	kfree(out_sbal_ptrs);
5000 out_free_queue_start_poll:
5001 	kfree(queue_start_poll);
5002 out_free_in_sbals:
5003 	kfree(in_sbal_ptrs);
5004 out_free_qib_param:
5005 	kfree(qib_param_field);
5006 out_free_nothing:
5007 	return rc;
5008 }
5009 
5010 static void qeth_core_free_card(struct qeth_card *card)
5011 {
5012 
5013 	QETH_DBF_TEXT(SETUP, 2, "freecrd");
5014 	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5015 	qeth_clean_channel(&card->read);
5016 	qeth_clean_channel(&card->write);
5017 	if (card->dev)
5018 		free_netdev(card->dev);
5019 	kfree(card->ip_tbd_list);
5020 	qeth_free_qdio_buffers(card);
5021 	unregister_service_level(&card->qeth_service_level);
5022 	kfree(card);
5023 }
5024 
5025 void qeth_trace_features(struct qeth_card *card)
5026 {
5027 	QETH_CARD_TEXT(card, 2, "features");
5028 	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
5029 	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
5030 	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
5031 	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
5032 	QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
5033 	QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
5034 	QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
5035 }
5036 EXPORT_SYMBOL_GPL(qeth_trace_features);
5037 
5038 static struct ccw_device_id qeth_ids[] = {
5039 	{CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5040 					.driver_info = QETH_CARD_TYPE_OSD},
5041 	{CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5042 					.driver_info = QETH_CARD_TYPE_IQD},
5043 	{CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5044 					.driver_info = QETH_CARD_TYPE_OSN},
5045 	{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5046 					.driver_info = QETH_CARD_TYPE_OSM},
5047 	{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5048 					.driver_info = QETH_CARD_TYPE_OSX},
5049 	{},
5050 };
5051 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5052 
5053 static struct ccw_driver qeth_ccw_driver = {
5054 	.driver = {
5055 		.owner = THIS_MODULE,
5056 		.name = "qeth",
5057 	},
5058 	.ids = qeth_ids,
5059 	.probe = ccwgroup_probe_ccwdev,
5060 	.remove = ccwgroup_remove_ccwdev,
5061 };
5062 
5063 int qeth_core_hardsetup_card(struct qeth_card *card)
5064 {
5065 	int retries = 3;
5066 	int rc;
5067 
5068 	QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5069 	atomic_set(&card->force_alloc_skb, 0);
5070 	qeth_update_from_chp_desc(card);
5071 retry:
5072 	if (retries < 3)
5073 		QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5074 			dev_name(&card->gdev->dev));
5075 	rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5076 	ccw_device_set_offline(CARD_DDEV(card));
5077 	ccw_device_set_offline(CARD_WDEV(card));
5078 	ccw_device_set_offline(CARD_RDEV(card));
5079 	qdio_free(CARD_DDEV(card));
5080 	rc = ccw_device_set_online(CARD_RDEV(card));
5081 	if (rc)
5082 		goto retriable;
5083 	rc = ccw_device_set_online(CARD_WDEV(card));
5084 	if (rc)
5085 		goto retriable;
5086 	rc = ccw_device_set_online(CARD_DDEV(card));
5087 	if (rc)
5088 		goto retriable;
5089 retriable:
5090 	if (rc == -ERESTARTSYS) {
5091 		QETH_DBF_TEXT(SETUP, 2, "break1");
5092 		return rc;
5093 	} else if (rc) {
5094 		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5095 		if (--retries < 0)
5096 			goto out;
5097 		else
5098 			goto retry;
5099 	}
5100 	qeth_determine_capabilities(card);
5101 	qeth_init_tokens(card);
5102 	qeth_init_func_level(card);
5103 	rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5104 	if (rc == -ERESTARTSYS) {
5105 		QETH_DBF_TEXT(SETUP, 2, "break2");
5106 		return rc;
5107 	} else if (rc) {
5108 		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5109 		if (--retries < 0)
5110 			goto out;
5111 		else
5112 			goto retry;
5113 	}
5114 	rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5115 	if (rc == -ERESTARTSYS) {
5116 		QETH_DBF_TEXT(SETUP, 2, "break3");
5117 		return rc;
5118 	} else if (rc) {
5119 		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5120 		if (--retries < 0)
5121 			goto out;
5122 		else
5123 			goto retry;
5124 	}
5125 	card->read_or_write_problem = 0;
5126 	rc = qeth_mpc_initialize(card);
5127 	if (rc) {
5128 		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5129 		goto out;
5130 	}
5131 
5132 	card->options.ipa4.supported_funcs = 0;
5133 	card->options.adp.supported_funcs = 0;
5134 	card->options.sbp.supported_funcs = 0;
5135 	card->info.diagass_support = 0;
5136 	rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5137 	if (rc == -ENOMEM)
5138 		goto out;
5139 	if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5140 		rc = qeth_query_setadapterparms(card);
5141 		if (rc < 0) {
5142 			QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5143 			goto out;
5144 		}
5145 	}
5146 	if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5147 		rc = qeth_query_setdiagass(card);
5148 		if (rc < 0) {
5149 			QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5150 			goto out;
5151 		}
5152 	}
5153 	return 0;
5154 out:
5155 	dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5156 		"an error on the device\n");
5157 	QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5158 		dev_name(&card->gdev->dev), rc);
5159 	return rc;
5160 }
5161 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5162 
5163 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5164 		struct qdio_buffer_element *element,
5165 		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5166 {
5167 	struct page *page = virt_to_page(element->addr);
5168 	if (*pskb == NULL) {
5169 		if (qethbuffer->rx_skb) {
5170 			/* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5171 			*pskb = qethbuffer->rx_skb;
5172 			qethbuffer->rx_skb = NULL;
5173 		} else {
5174 			*pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5175 			if (!(*pskb))
5176 				return -ENOMEM;
5177 		}
5178 
5179 		skb_reserve(*pskb, ETH_HLEN);
5180 		if (data_len <= QETH_RX_PULL_LEN) {
5181 			memcpy(skb_put(*pskb, data_len), element->addr + offset,
5182 				data_len);
5183 		} else {
5184 			get_page(page);
5185 			memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5186 			       element->addr + offset, QETH_RX_PULL_LEN);
5187 			skb_fill_page_desc(*pskb, *pfrag, page,
5188 				offset + QETH_RX_PULL_LEN,
5189 				data_len - QETH_RX_PULL_LEN);
5190 			(*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5191 			(*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5192 			(*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5193 			(*pfrag)++;
5194 		}
5195 	} else {
5196 		get_page(page);
5197 		skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5198 		(*pskb)->data_len += data_len;
5199 		(*pskb)->len      += data_len;
5200 		(*pskb)->truesize += data_len;
5201 		(*pfrag)++;
5202 	}
5203 
5204 
5205 	return 0;
5206 }
5207 
5208 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5209 {
5210 	return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5211 }
5212 
5213 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5214 		struct qeth_qdio_buffer *qethbuffer,
5215 		struct qdio_buffer_element **__element, int *__offset,
5216 		struct qeth_hdr **hdr)
5217 {
5218 	struct qdio_buffer_element *element = *__element;
5219 	struct qdio_buffer *buffer = qethbuffer->buffer;
5220 	int offset = *__offset;
5221 	struct sk_buff *skb = NULL;
5222 	int skb_len = 0;
5223 	void *data_ptr;
5224 	int data_len;
5225 	int headroom = 0;
5226 	int use_rx_sg = 0;
5227 	int frag = 0;
5228 
5229 	/* qeth_hdr must not cross element boundaries */
5230 	if (element->length < offset + sizeof(struct qeth_hdr)) {
5231 		if (qeth_is_last_sbale(element))
5232 			return NULL;
5233 		element++;
5234 		offset = 0;
5235 		if (element->length < sizeof(struct qeth_hdr))
5236 			return NULL;
5237 	}
5238 	*hdr = element->addr + offset;
5239 
5240 	offset += sizeof(struct qeth_hdr);
5241 	switch ((*hdr)->hdr.l2.id) {
5242 	case QETH_HEADER_TYPE_LAYER2:
5243 		skb_len = (*hdr)->hdr.l2.pkt_length;
5244 		break;
5245 	case QETH_HEADER_TYPE_LAYER3:
5246 		skb_len = (*hdr)->hdr.l3.length;
5247 		headroom = ETH_HLEN;
5248 		break;
5249 	case QETH_HEADER_TYPE_OSN:
5250 		skb_len = (*hdr)->hdr.osn.pdu_length;
5251 		headroom = sizeof(struct qeth_hdr);
5252 		break;
5253 	default:
5254 		break;
5255 	}
5256 
5257 	if (!skb_len)
5258 		return NULL;
5259 
5260 	if (((skb_len >= card->options.rx_sg_cb) &&
5261 	     (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5262 	     (!atomic_read(&card->force_alloc_skb))) ||
5263 	    (card->options.cq == QETH_CQ_ENABLED)) {
5264 		use_rx_sg = 1;
5265 	} else {
5266 		skb = dev_alloc_skb(skb_len + headroom);
5267 		if (!skb)
5268 			goto no_mem;
5269 		if (headroom)
5270 			skb_reserve(skb, headroom);
5271 	}
5272 
5273 	data_ptr = element->addr + offset;
5274 	while (skb_len) {
5275 		data_len = min(skb_len, (int)(element->length - offset));
5276 		if (data_len) {
5277 			if (use_rx_sg) {
5278 				if (qeth_create_skb_frag(qethbuffer, element,
5279 				    &skb, offset, &frag, data_len))
5280 					goto no_mem;
5281 			} else {
5282 				memcpy(skb_put(skb, data_len), data_ptr,
5283 					data_len);
5284 			}
5285 		}
5286 		skb_len -= data_len;
5287 		if (skb_len) {
5288 			if (qeth_is_last_sbale(element)) {
5289 				QETH_CARD_TEXT(card, 4, "unexeob");
5290 				QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5291 				dev_kfree_skb_any(skb);
5292 				card->stats.rx_errors++;
5293 				return NULL;
5294 			}
5295 			element++;
5296 			offset = 0;
5297 			data_ptr = element->addr;
5298 		} else {
5299 			offset += data_len;
5300 		}
5301 	}
5302 	*__element = element;
5303 	*__offset = offset;
5304 	if (use_rx_sg && card->options.performance_stats) {
5305 		card->perf_stats.sg_skbs_rx++;
5306 		card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5307 	}
5308 	return skb;
5309 no_mem:
5310 	if (net_ratelimit()) {
5311 		QETH_CARD_TEXT(card, 2, "noskbmem");
5312 	}
5313 	card->stats.rx_dropped++;
5314 	return NULL;
5315 }
5316 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5317 
5318 static void qeth_unregister_dbf_views(void)
5319 {
5320 	int x;
5321 	for (x = 0; x < QETH_DBF_INFOS; x++) {
5322 		debug_unregister(qeth_dbf[x].id);
5323 		qeth_dbf[x].id = NULL;
5324 	}
5325 }
5326 
5327 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5328 {
5329 	char dbf_txt_buf[32];
5330 	va_list args;
5331 
5332 	if (!debug_level_enabled(id, level))
5333 		return;
5334 	va_start(args, fmt);
5335 	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5336 	va_end(args);
5337 	debug_text_event(id, level, dbf_txt_buf);
5338 }
5339 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5340 
5341 static int qeth_register_dbf_views(void)
5342 {
5343 	int ret;
5344 	int x;
5345 
5346 	for (x = 0; x < QETH_DBF_INFOS; x++) {
5347 		/* register the areas */
5348 		qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5349 						qeth_dbf[x].pages,
5350 						qeth_dbf[x].areas,
5351 						qeth_dbf[x].len);
5352 		if (qeth_dbf[x].id == NULL) {
5353 			qeth_unregister_dbf_views();
5354 			return -ENOMEM;
5355 		}
5356 
5357 		/* register a view */
5358 		ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5359 		if (ret) {
5360 			qeth_unregister_dbf_views();
5361 			return ret;
5362 		}
5363 
5364 		/* set a passing level */
5365 		debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5366 	}
5367 
5368 	return 0;
5369 }
5370 
5371 int qeth_core_load_discipline(struct qeth_card *card,
5372 		enum qeth_discipline_id discipline)
5373 {
5374 	int rc = 0;
5375 	mutex_lock(&qeth_mod_mutex);
5376 	switch (discipline) {
5377 	case QETH_DISCIPLINE_LAYER3:
5378 		card->discipline = try_then_request_module(
5379 			symbol_get(qeth_l3_discipline), "qeth_l3");
5380 		break;
5381 	case QETH_DISCIPLINE_LAYER2:
5382 		card->discipline = try_then_request_module(
5383 			symbol_get(qeth_l2_discipline), "qeth_l2");
5384 		break;
5385 	}
5386 	if (!card->discipline) {
5387 		dev_err(&card->gdev->dev, "There is no kernel module to "
5388 			"support discipline %d\n", discipline);
5389 		rc = -EINVAL;
5390 	}
5391 	mutex_unlock(&qeth_mod_mutex);
5392 	return rc;
5393 }
5394 
5395 void qeth_core_free_discipline(struct qeth_card *card)
5396 {
5397 	if (card->options.layer2)
5398 		symbol_put(qeth_l2_discipline);
5399 	else
5400 		symbol_put(qeth_l3_discipline);
5401 	card->discipline = NULL;
5402 }
5403 
5404 static const struct device_type qeth_generic_devtype = {
5405 	.name = "qeth_generic",
5406 	.groups = qeth_generic_attr_groups,
5407 };
5408 static const struct device_type qeth_osn_devtype = {
5409 	.name = "qeth_osn",
5410 	.groups = qeth_osn_attr_groups,
5411 };
5412 
5413 #define DBF_NAME_LEN	20
5414 
5415 struct qeth_dbf_entry {
5416 	char dbf_name[DBF_NAME_LEN];
5417 	debug_info_t *dbf_info;
5418 	struct list_head dbf_list;
5419 };
5420 
5421 static LIST_HEAD(qeth_dbf_list);
5422 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5423 
5424 static debug_info_t *qeth_get_dbf_entry(char *name)
5425 {
5426 	struct qeth_dbf_entry *entry;
5427 	debug_info_t *rc = NULL;
5428 
5429 	mutex_lock(&qeth_dbf_list_mutex);
5430 	list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5431 		if (strcmp(entry->dbf_name, name) == 0) {
5432 			rc = entry->dbf_info;
5433 			break;
5434 		}
5435 	}
5436 	mutex_unlock(&qeth_dbf_list_mutex);
5437 	return rc;
5438 }
5439 
5440 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5441 {
5442 	struct qeth_dbf_entry *new_entry;
5443 
5444 	card->debug = debug_register(name, 2, 1, 8);
5445 	if (!card->debug) {
5446 		QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5447 		goto err;
5448 	}
5449 	if (debug_register_view(card->debug, &debug_hex_ascii_view))
5450 		goto err_dbg;
5451 	new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5452 	if (!new_entry)
5453 		goto err_dbg;
5454 	strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5455 	new_entry->dbf_info = card->debug;
5456 	mutex_lock(&qeth_dbf_list_mutex);
5457 	list_add(&new_entry->dbf_list, &qeth_dbf_list);
5458 	mutex_unlock(&qeth_dbf_list_mutex);
5459 
5460 	return 0;
5461 
5462 err_dbg:
5463 	debug_unregister(card->debug);
5464 err:
5465 	return -ENOMEM;
5466 }
5467 
5468 static void qeth_clear_dbf_list(void)
5469 {
5470 	struct qeth_dbf_entry *entry, *tmp;
5471 
5472 	mutex_lock(&qeth_dbf_list_mutex);
5473 	list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5474 		list_del(&entry->dbf_list);
5475 		debug_unregister(entry->dbf_info);
5476 		kfree(entry);
5477 	}
5478 	mutex_unlock(&qeth_dbf_list_mutex);
5479 }
5480 
5481 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5482 {
5483 	struct qeth_card *card;
5484 	struct device *dev;
5485 	int rc;
5486 	unsigned long flags;
5487 	char dbf_name[DBF_NAME_LEN];
5488 
5489 	QETH_DBF_TEXT(SETUP, 2, "probedev");
5490 
5491 	dev = &gdev->dev;
5492 	if (!get_device(dev))
5493 		return -ENODEV;
5494 
5495 	QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5496 
5497 	card = qeth_alloc_card();
5498 	if (!card) {
5499 		QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5500 		rc = -ENOMEM;
5501 		goto err_dev;
5502 	}
5503 
5504 	snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5505 		dev_name(&gdev->dev));
5506 	card->debug = qeth_get_dbf_entry(dbf_name);
5507 	if (!card->debug) {
5508 		rc = qeth_add_dbf_entry(card, dbf_name);
5509 		if (rc)
5510 			goto err_card;
5511 	}
5512 
5513 	card->read.ccwdev  = gdev->cdev[0];
5514 	card->write.ccwdev = gdev->cdev[1];
5515 	card->data.ccwdev  = gdev->cdev[2];
5516 	dev_set_drvdata(&gdev->dev, card);
5517 	card->gdev = gdev;
5518 	gdev->cdev[0]->handler = qeth_irq;
5519 	gdev->cdev[1]->handler = qeth_irq;
5520 	gdev->cdev[2]->handler = qeth_irq;
5521 
5522 	rc = qeth_determine_card_type(card);
5523 	if (rc) {
5524 		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5525 		goto err_card;
5526 	}
5527 	rc = qeth_setup_card(card);
5528 	if (rc) {
5529 		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5530 		goto err_card;
5531 	}
5532 
5533 	if (card->info.type == QETH_CARD_TYPE_OSN)
5534 		gdev->dev.type = &qeth_osn_devtype;
5535 	else
5536 		gdev->dev.type = &qeth_generic_devtype;
5537 
5538 	switch (card->info.type) {
5539 	case QETH_CARD_TYPE_OSN:
5540 	case QETH_CARD_TYPE_OSM:
5541 		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5542 		if (rc)
5543 			goto err_card;
5544 		rc = card->discipline->setup(card->gdev);
5545 		if (rc)
5546 			goto err_disc;
5547 	case QETH_CARD_TYPE_OSD:
5548 	case QETH_CARD_TYPE_OSX:
5549 	default:
5550 		break;
5551 	}
5552 
5553 	write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5554 	list_add_tail(&card->list, &qeth_core_card_list.list);
5555 	write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5556 
5557 	qeth_determine_capabilities(card);
5558 	return 0;
5559 
5560 err_disc:
5561 	qeth_core_free_discipline(card);
5562 err_card:
5563 	qeth_core_free_card(card);
5564 err_dev:
5565 	put_device(dev);
5566 	return rc;
5567 }
5568 
5569 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5570 {
5571 	unsigned long flags;
5572 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5573 
5574 	QETH_DBF_TEXT(SETUP, 2, "removedv");
5575 
5576 	if (card->discipline) {
5577 		card->discipline->remove(gdev);
5578 		qeth_core_free_discipline(card);
5579 	}
5580 
5581 	write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5582 	list_del(&card->list);
5583 	write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5584 	qeth_core_free_card(card);
5585 	dev_set_drvdata(&gdev->dev, NULL);
5586 	put_device(&gdev->dev);
5587 	return;
5588 }
5589 
5590 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5591 {
5592 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5593 	int rc = 0;
5594 	int def_discipline;
5595 
5596 	if (!card->discipline) {
5597 		if (card->info.type == QETH_CARD_TYPE_IQD)
5598 			def_discipline = QETH_DISCIPLINE_LAYER3;
5599 		else
5600 			def_discipline = QETH_DISCIPLINE_LAYER2;
5601 		rc = qeth_core_load_discipline(card, def_discipline);
5602 		if (rc)
5603 			goto err;
5604 		rc = card->discipline->setup(card->gdev);
5605 		if (rc)
5606 			goto err;
5607 	}
5608 	rc = card->discipline->set_online(gdev);
5609 err:
5610 	return rc;
5611 }
5612 
5613 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5614 {
5615 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5616 	return card->discipline->set_offline(gdev);
5617 }
5618 
5619 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5620 {
5621 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5622 	if (card->discipline && card->discipline->shutdown)
5623 		card->discipline->shutdown(gdev);
5624 }
5625 
5626 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5627 {
5628 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5629 	if (card->discipline && card->discipline->prepare)
5630 		return card->discipline->prepare(gdev);
5631 	return 0;
5632 }
5633 
5634 static void qeth_core_complete(struct ccwgroup_device *gdev)
5635 {
5636 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5637 	if (card->discipline && card->discipline->complete)
5638 		card->discipline->complete(gdev);
5639 }
5640 
5641 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5642 {
5643 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5644 	if (card->discipline && card->discipline->freeze)
5645 		return card->discipline->freeze(gdev);
5646 	return 0;
5647 }
5648 
5649 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5650 {
5651 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5652 	if (card->discipline && card->discipline->thaw)
5653 		return card->discipline->thaw(gdev);
5654 	return 0;
5655 }
5656 
5657 static int qeth_core_restore(struct ccwgroup_device *gdev)
5658 {
5659 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5660 	if (card->discipline && card->discipline->restore)
5661 		return card->discipline->restore(gdev);
5662 	return 0;
5663 }
5664 
5665 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5666 	.driver = {
5667 		.owner = THIS_MODULE,
5668 		.name = "qeth",
5669 	},
5670 	.setup = qeth_core_probe_device,
5671 	.remove = qeth_core_remove_device,
5672 	.set_online = qeth_core_set_online,
5673 	.set_offline = qeth_core_set_offline,
5674 	.shutdown = qeth_core_shutdown,
5675 	.prepare = qeth_core_prepare,
5676 	.complete = qeth_core_complete,
5677 	.freeze = qeth_core_freeze,
5678 	.thaw = qeth_core_thaw,
5679 	.restore = qeth_core_restore,
5680 };
5681 
5682 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5683 					    const char *buf, size_t count)
5684 {
5685 	int err;
5686 
5687 	err = ccwgroup_create_dev(qeth_core_root_dev,
5688 				  &qeth_core_ccwgroup_driver, 3, buf);
5689 
5690 	return err ? err : count;
5691 }
5692 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5693 
5694 static struct attribute *qeth_drv_attrs[] = {
5695 	&driver_attr_group.attr,
5696 	NULL,
5697 };
5698 static struct attribute_group qeth_drv_attr_group = {
5699 	.attrs = qeth_drv_attrs,
5700 };
5701 static const struct attribute_group *qeth_drv_attr_groups[] = {
5702 	&qeth_drv_attr_group,
5703 	NULL,
5704 };
5705 
5706 static struct {
5707 	const char str[ETH_GSTRING_LEN];
5708 } qeth_ethtool_stats_keys[] = {
5709 /*  0 */{"rx skbs"},
5710 	{"rx buffers"},
5711 	{"tx skbs"},
5712 	{"tx buffers"},
5713 	{"tx skbs no packing"},
5714 	{"tx buffers no packing"},
5715 	{"tx skbs packing"},
5716 	{"tx buffers packing"},
5717 	{"tx sg skbs"},
5718 	{"tx sg frags"},
5719 /* 10 */{"rx sg skbs"},
5720 	{"rx sg frags"},
5721 	{"rx sg page allocs"},
5722 	{"tx large kbytes"},
5723 	{"tx large count"},
5724 	{"tx pk state ch n->p"},
5725 	{"tx pk state ch p->n"},
5726 	{"tx pk watermark low"},
5727 	{"tx pk watermark high"},
5728 	{"queue 0 buffer usage"},
5729 /* 20 */{"queue 1 buffer usage"},
5730 	{"queue 2 buffer usage"},
5731 	{"queue 3 buffer usage"},
5732 	{"rx poll time"},
5733 	{"rx poll count"},
5734 	{"rx do_QDIO time"},
5735 	{"rx do_QDIO count"},
5736 	{"tx handler time"},
5737 	{"tx handler count"},
5738 	{"tx time"},
5739 /* 30 */{"tx count"},
5740 	{"tx do_QDIO time"},
5741 	{"tx do_QDIO count"},
5742 	{"tx csum"},
5743 	{"tx lin"},
5744 	{"cq handler count"},
5745 	{"cq handler time"}
5746 };
5747 
5748 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5749 {
5750 	switch (stringset) {
5751 	case ETH_SS_STATS:
5752 		return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5753 	default:
5754 		return -EINVAL;
5755 	}
5756 }
5757 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5758 
5759 void qeth_core_get_ethtool_stats(struct net_device *dev,
5760 		struct ethtool_stats *stats, u64 *data)
5761 {
5762 	struct qeth_card *card = dev->ml_priv;
5763 	data[0] = card->stats.rx_packets -
5764 				card->perf_stats.initial_rx_packets;
5765 	data[1] = card->perf_stats.bufs_rec;
5766 	data[2] = card->stats.tx_packets -
5767 				card->perf_stats.initial_tx_packets;
5768 	data[3] = card->perf_stats.bufs_sent;
5769 	data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5770 			- card->perf_stats.skbs_sent_pack;
5771 	data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5772 	data[6] = card->perf_stats.skbs_sent_pack;
5773 	data[7] = card->perf_stats.bufs_sent_pack;
5774 	data[8] = card->perf_stats.sg_skbs_sent;
5775 	data[9] = card->perf_stats.sg_frags_sent;
5776 	data[10] = card->perf_stats.sg_skbs_rx;
5777 	data[11] = card->perf_stats.sg_frags_rx;
5778 	data[12] = card->perf_stats.sg_alloc_page_rx;
5779 	data[13] = (card->perf_stats.large_send_bytes >> 10);
5780 	data[14] = card->perf_stats.large_send_cnt;
5781 	data[15] = card->perf_stats.sc_dp_p;
5782 	data[16] = card->perf_stats.sc_p_dp;
5783 	data[17] = QETH_LOW_WATERMARK_PACK;
5784 	data[18] = QETH_HIGH_WATERMARK_PACK;
5785 	data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5786 	data[20] = (card->qdio.no_out_queues > 1) ?
5787 			atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5788 	data[21] = (card->qdio.no_out_queues > 2) ?
5789 			atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5790 	data[22] = (card->qdio.no_out_queues > 3) ?
5791 			atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5792 	data[23] = card->perf_stats.inbound_time;
5793 	data[24] = card->perf_stats.inbound_cnt;
5794 	data[25] = card->perf_stats.inbound_do_qdio_time;
5795 	data[26] = card->perf_stats.inbound_do_qdio_cnt;
5796 	data[27] = card->perf_stats.outbound_handler_time;
5797 	data[28] = card->perf_stats.outbound_handler_cnt;
5798 	data[29] = card->perf_stats.outbound_time;
5799 	data[30] = card->perf_stats.outbound_cnt;
5800 	data[31] = card->perf_stats.outbound_do_qdio_time;
5801 	data[32] = card->perf_stats.outbound_do_qdio_cnt;
5802 	data[33] = card->perf_stats.tx_csum;
5803 	data[34] = card->perf_stats.tx_lin;
5804 	data[35] = card->perf_stats.cq_cnt;
5805 	data[36] = card->perf_stats.cq_time;
5806 }
5807 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5808 
5809 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5810 {
5811 	switch (stringset) {
5812 	case ETH_SS_STATS:
5813 		memcpy(data, &qeth_ethtool_stats_keys,
5814 			sizeof(qeth_ethtool_stats_keys));
5815 		break;
5816 	default:
5817 		WARN_ON(1);
5818 		break;
5819 	}
5820 }
5821 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5822 
5823 void qeth_core_get_drvinfo(struct net_device *dev,
5824 		struct ethtool_drvinfo *info)
5825 {
5826 	struct qeth_card *card = dev->ml_priv;
5827 
5828 	strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5829 		sizeof(info->driver));
5830 	strlcpy(info->version, "1.0", sizeof(info->version));
5831 	strlcpy(info->fw_version, card->info.mcl_level,
5832 		sizeof(info->fw_version));
5833 	snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5834 		 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5835 }
5836 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5837 
5838 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5839 /* Autoneg and full-duplex are supported and advertized uncondionally.	     */
5840 /* Always advertize and support all speeds up to specified, and only one     */
5841 /* specified port type.							     */
5842 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5843 				int maxspeed, int porttype)
5844 {
5845 	int port_sup, port_adv, spd_sup, spd_adv;
5846 
5847 	switch (porttype) {
5848 	case PORT_TP:
5849 		port_sup = SUPPORTED_TP;
5850 		port_adv = ADVERTISED_TP;
5851 		break;
5852 	case PORT_FIBRE:
5853 		port_sup = SUPPORTED_FIBRE;
5854 		port_adv = ADVERTISED_FIBRE;
5855 		break;
5856 	default:
5857 		port_sup = SUPPORTED_TP;
5858 		port_adv = ADVERTISED_TP;
5859 		WARN_ON_ONCE(1);
5860 	}
5861 
5862 	/* "Fallthrough" case'es ordered from high to low result in setting  */
5863 	/* flags cumulatively, starting from the specified speed and down to */
5864 	/* the lowest possible.						     */
5865 	spd_sup = 0;
5866 	spd_adv = 0;
5867 	switch (maxspeed) {
5868 	case SPEED_10000:
5869 		spd_sup |= SUPPORTED_10000baseT_Full;
5870 		spd_adv |= ADVERTISED_10000baseT_Full;
5871 	case SPEED_1000:
5872 		spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5873 		spd_adv |= ADVERTISED_1000baseT_Half |
5874 						ADVERTISED_1000baseT_Full;
5875 	case SPEED_100:
5876 		spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5877 		spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5878 	case SPEED_10:
5879 		spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5880 		spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5881 	break;
5882 	default:
5883 		spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5884 		spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5885 		WARN_ON_ONCE(1);
5886 	}
5887 	ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5888 	ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5889 }
5890 
5891 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5892 					struct ethtool_cmd *ecmd)
5893 {
5894 	struct qeth_card *card = netdev->ml_priv;
5895 	enum qeth_link_types link_type;
5896 	struct carrier_info carrier_info;
5897 	int rc;
5898 	u32 speed;
5899 
5900 	if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5901 		link_type = QETH_LINK_TYPE_10GBIT_ETH;
5902 	else
5903 		link_type = card->info.link_type;
5904 
5905 	ecmd->transceiver = XCVR_INTERNAL;
5906 	ecmd->duplex = DUPLEX_FULL;
5907 	ecmd->autoneg = AUTONEG_ENABLE;
5908 
5909 	switch (link_type) {
5910 	case QETH_LINK_TYPE_FAST_ETH:
5911 	case QETH_LINK_TYPE_LANE_ETH100:
5912 		qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5913 		speed = SPEED_100;
5914 		ecmd->port = PORT_TP;
5915 		break;
5916 
5917 	case QETH_LINK_TYPE_GBIT_ETH:
5918 	case QETH_LINK_TYPE_LANE_ETH1000:
5919 		qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5920 		speed = SPEED_1000;
5921 		ecmd->port = PORT_FIBRE;
5922 		break;
5923 
5924 	case QETH_LINK_TYPE_10GBIT_ETH:
5925 		qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5926 		speed = SPEED_10000;
5927 		ecmd->port = PORT_FIBRE;
5928 		break;
5929 
5930 	default:
5931 		qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5932 		speed = SPEED_10;
5933 		ecmd->port = PORT_TP;
5934 	}
5935 	ethtool_cmd_speed_set(ecmd, speed);
5936 
5937 	/* Check if we can obtain more accurate information.	 */
5938 	/* If QUERY_CARD_INFO command is not supported or fails, */
5939 	/* just return the heuristics that was filled above.	 */
5940 	if (!qeth_card_hw_is_reachable(card))
5941 		return -ENODEV;
5942 	rc = qeth_query_card_info(card, &carrier_info);
5943 	if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5944 		return 0;
5945 	if (rc) /* report error from the hardware operation */
5946 		return rc;
5947 	/* on success, fill in the information got from the hardware */
5948 
5949 	netdev_dbg(netdev,
5950 	"card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5951 			carrier_info.card_type,
5952 			carrier_info.port_mode,
5953 			carrier_info.port_speed);
5954 
5955 	/* Update attributes for which we've obtained more authoritative */
5956 	/* information, leave the rest the way they where filled above.  */
5957 	switch (carrier_info.card_type) {
5958 	case CARD_INFO_TYPE_1G_COPPER_A:
5959 	case CARD_INFO_TYPE_1G_COPPER_B:
5960 		qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5961 		ecmd->port = PORT_TP;
5962 		break;
5963 	case CARD_INFO_TYPE_1G_FIBRE_A:
5964 	case CARD_INFO_TYPE_1G_FIBRE_B:
5965 		qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5966 		ecmd->port = PORT_FIBRE;
5967 		break;
5968 	case CARD_INFO_TYPE_10G_FIBRE_A:
5969 	case CARD_INFO_TYPE_10G_FIBRE_B:
5970 		qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5971 		ecmd->port = PORT_FIBRE;
5972 		break;
5973 	}
5974 
5975 	switch (carrier_info.port_mode) {
5976 	case CARD_INFO_PORTM_FULLDUPLEX:
5977 		ecmd->duplex = DUPLEX_FULL;
5978 		break;
5979 	case CARD_INFO_PORTM_HALFDUPLEX:
5980 		ecmd->duplex = DUPLEX_HALF;
5981 		break;
5982 	}
5983 
5984 	switch (carrier_info.port_speed) {
5985 	case CARD_INFO_PORTS_10M:
5986 		speed = SPEED_10;
5987 		break;
5988 	case CARD_INFO_PORTS_100M:
5989 		speed = SPEED_100;
5990 		break;
5991 	case CARD_INFO_PORTS_1G:
5992 		speed = SPEED_1000;
5993 		break;
5994 	case CARD_INFO_PORTS_10G:
5995 		speed = SPEED_10000;
5996 		break;
5997 	}
5998 	ethtool_cmd_speed_set(ecmd, speed);
5999 
6000 	return 0;
6001 }
6002 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6003 
6004 static int __init qeth_core_init(void)
6005 {
6006 	int rc;
6007 
6008 	pr_info("loading core functions\n");
6009 	INIT_LIST_HEAD(&qeth_core_card_list.list);
6010 	INIT_LIST_HEAD(&qeth_dbf_list);
6011 	rwlock_init(&qeth_core_card_list.rwlock);
6012 	mutex_init(&qeth_mod_mutex);
6013 
6014 	qeth_wq = create_singlethread_workqueue("qeth_wq");
6015 
6016 	rc = qeth_register_dbf_views();
6017 	if (rc)
6018 		goto out_err;
6019 	qeth_core_root_dev = root_device_register("qeth");
6020 	rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6021 	if (rc)
6022 		goto register_err;
6023 	qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6024 			sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6025 	if (!qeth_core_header_cache) {
6026 		rc = -ENOMEM;
6027 		goto slab_err;
6028 	}
6029 	qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6030 			sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6031 	if (!qeth_qdio_outbuf_cache) {
6032 		rc = -ENOMEM;
6033 		goto cqslab_err;
6034 	}
6035 	rc = ccw_driver_register(&qeth_ccw_driver);
6036 	if (rc)
6037 		goto ccw_err;
6038 	qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6039 	rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6040 	if (rc)
6041 		goto ccwgroup_err;
6042 
6043 	return 0;
6044 
6045 ccwgroup_err:
6046 	ccw_driver_unregister(&qeth_ccw_driver);
6047 ccw_err:
6048 	kmem_cache_destroy(qeth_qdio_outbuf_cache);
6049 cqslab_err:
6050 	kmem_cache_destroy(qeth_core_header_cache);
6051 slab_err:
6052 	root_device_unregister(qeth_core_root_dev);
6053 register_err:
6054 	qeth_unregister_dbf_views();
6055 out_err:
6056 	pr_err("Initializing the qeth device driver failed\n");
6057 	return rc;
6058 }
6059 
6060 static void __exit qeth_core_exit(void)
6061 {
6062 	qeth_clear_dbf_list();
6063 	destroy_workqueue(qeth_wq);
6064 	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6065 	ccw_driver_unregister(&qeth_ccw_driver);
6066 	kmem_cache_destroy(qeth_qdio_outbuf_cache);
6067 	kmem_cache_destroy(qeth_core_header_cache);
6068 	root_device_unregister(qeth_core_root_dev);
6069 	qeth_unregister_dbf_views();
6070 	pr_info("core functions removed\n");
6071 }
6072 
6073 module_init(qeth_core_init);
6074 module_exit(qeth_core_exit);
6075 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6076 MODULE_DESCRIPTION("qeth core functions");
6077 MODULE_LICENSE("GPL");
6078