Version:  2.0.40 2.2.26 2.4.37 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4

Linux/drivers/s390/net/qeth_core_main.c

  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_IQD:
649                         case IPA_CMD_SETBRIDGEPORT_OSA:
650                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
651                                 if (card->discipline->control_event_handler
652                                                                 (card, cmd))
653                                         return cmd;
654                                 else
655                                         return NULL;
656                         case IPA_CMD_MODCCID:
657                                 return cmd;
658                         case IPA_CMD_REGISTER_LOCAL_ADDR:
659                                 QETH_CARD_TEXT(card, 3, "irla");
660                                 break;
661                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
662                                 QETH_CARD_TEXT(card, 3, "urla");
663                                 break;
664                         default:
665                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
666                                            "but not a reply!\n");
667                                 break;
668                         }
669                 }
670         }
671         return cmd;
672 }
673 
674 void qeth_clear_ipacmd_list(struct qeth_card *card)
675 {
676         struct qeth_reply *reply, *r;
677         unsigned long flags;
678 
679         QETH_CARD_TEXT(card, 4, "clipalst");
680 
681         spin_lock_irqsave(&card->lock, flags);
682         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
683                 qeth_get_reply(reply);
684                 reply->rc = -EIO;
685                 atomic_inc(&reply->received);
686                 list_del_init(&reply->list);
687                 wake_up(&reply->wait_q);
688                 qeth_put_reply(reply);
689         }
690         spin_unlock_irqrestore(&card->lock, flags);
691         atomic_set(&card->write.irq_pending, 0);
692 }
693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
694 
695 static int qeth_check_idx_response(struct qeth_card *card,
696         unsigned char *buffer)
697 {
698         if (!buffer)
699                 return 0;
700 
701         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
702         if ((buffer[2] & 0xc0) == 0xc0) {
703                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
704                            "with cause code 0x%02x%s\n",
705                            buffer[4],
706                            ((buffer[4] == 0x22) ?
707                             " -- try another portname" : ""));
708                 QETH_CARD_TEXT(card, 2, "ckidxres");
709                 QETH_CARD_TEXT(card, 2, " idxterm");
710                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
711                 if (buffer[4] == 0xf6) {
712                         dev_err(&card->gdev->dev,
713                         "The qeth device is not configured "
714                         "for the OSI layer required by z/VM\n");
715                         return -EPERM;
716                 }
717                 return -EIO;
718         }
719         return 0;
720 }
721 
722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
723 {
724         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
725                 dev_get_drvdata(&cdev->dev))->dev);
726         return card;
727 }
728 
729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
730                 __u32 len)
731 {
732         struct qeth_card *card;
733 
734         card = CARD_FROM_CDEV(channel->ccwdev);
735         QETH_CARD_TEXT(card, 4, "setupccw");
736         if (channel == &card->read)
737                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
738         else
739                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
740         channel->ccw.count = len;
741         channel->ccw.cda = (__u32) __pa(iob);
742 }
743 
744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
745 {
746         __u8 index;
747 
748         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
749         index = channel->io_buf_no;
750         do {
751                 if (channel->iob[index].state == BUF_STATE_FREE) {
752                         channel->iob[index].state = BUF_STATE_LOCKED;
753                         channel->io_buf_no = (channel->io_buf_no + 1) %
754                                 QETH_CMD_BUFFER_NO;
755                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
756                         return channel->iob + index;
757                 }
758                 index = (index + 1) % QETH_CMD_BUFFER_NO;
759         } while (index != channel->io_buf_no);
760 
761         return NULL;
762 }
763 
764 void qeth_release_buffer(struct qeth_channel *channel,
765                 struct qeth_cmd_buffer *iob)
766 {
767         unsigned long flags;
768 
769         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
770         spin_lock_irqsave(&channel->iob_lock, flags);
771         memset(iob->data, 0, QETH_BUFSIZE);
772         iob->state = BUF_STATE_FREE;
773         iob->callback = qeth_send_control_data_cb;
774         iob->rc = 0;
775         spin_unlock_irqrestore(&channel->iob_lock, flags);
776         wake_up(&channel->wait_q);
777 }
778 EXPORT_SYMBOL_GPL(qeth_release_buffer);
779 
780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
781 {
782         struct qeth_cmd_buffer *buffer = NULL;
783         unsigned long flags;
784 
785         spin_lock_irqsave(&channel->iob_lock, flags);
786         buffer = __qeth_get_buffer(channel);
787         spin_unlock_irqrestore(&channel->iob_lock, flags);
788         return buffer;
789 }
790 
791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
792 {
793         struct qeth_cmd_buffer *buffer;
794         wait_event(channel->wait_q,
795                    ((buffer = qeth_get_buffer(channel)) != NULL));
796         return buffer;
797 }
798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
799 
800 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
801 {
802         int cnt;
803 
804         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
805                 qeth_release_buffer(channel, &channel->iob[cnt]);
806         channel->buf_no = 0;
807         channel->io_buf_no = 0;
808 }
809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
810 
811 static void qeth_send_control_data_cb(struct qeth_channel *channel,
812                   struct qeth_cmd_buffer *iob)
813 {
814         struct qeth_card *card;
815         struct qeth_reply *reply, *r;
816         struct qeth_ipa_cmd *cmd;
817         unsigned long flags;
818         int keep_reply;
819         int rc = 0;
820 
821         card = CARD_FROM_CDEV(channel->ccwdev);
822         QETH_CARD_TEXT(card, 4, "sndctlcb");
823         rc = qeth_check_idx_response(card, iob->data);
824         switch (rc) {
825         case 0:
826                 break;
827         case -EIO:
828                 qeth_clear_ipacmd_list(card);
829                 qeth_schedule_recovery(card);
830                 /* fall through */
831         default:
832                 goto out;
833         }
834 
835         cmd = qeth_check_ipa_data(card, iob);
836         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
837                 goto out;
838         /*in case of OSN : check if cmd is set */
839         if (card->info.type == QETH_CARD_TYPE_OSN &&
840             cmd &&
841             cmd->hdr.command != IPA_CMD_STARTLAN &&
842             card->osn_info.assist_cb != NULL) {
843                 card->osn_info.assist_cb(card->dev, cmd);
844                 goto out;
845         }
846 
847         spin_lock_irqsave(&card->lock, flags);
848         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
849                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
850                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
851                         qeth_get_reply(reply);
852                         list_del_init(&reply->list);
853                         spin_unlock_irqrestore(&card->lock, flags);
854                         keep_reply = 0;
855                         if (reply->callback != NULL) {
856                                 if (cmd) {
857                                         reply->offset = (__u16)((char *)cmd -
858                                                         (char *)iob->data);
859                                         keep_reply = reply->callback(card,
860                                                         reply,
861                                                         (unsigned long)cmd);
862                                 } else
863                                         keep_reply = reply->callback(card,
864                                                         reply,
865                                                         (unsigned long)iob);
866                         }
867                         if (cmd)
868                                 reply->rc = (u16) cmd->hdr.return_code;
869                         else if (iob->rc)
870                                 reply->rc = iob->rc;
871                         if (keep_reply) {
872                                 spin_lock_irqsave(&card->lock, flags);
873                                 list_add_tail(&reply->list,
874                                               &card->cmd_waiter_list);
875                                 spin_unlock_irqrestore(&card->lock, flags);
876                         } else {
877                                 atomic_inc(&reply->received);
878                                 wake_up(&reply->wait_q);
879                         }
880                         qeth_put_reply(reply);
881                         goto out;
882                 }
883         }
884         spin_unlock_irqrestore(&card->lock, flags);
885 out:
886         memcpy(&card->seqno.pdu_hdr_ack,
887                 QETH_PDU_HEADER_SEQ_NO(iob->data),
888                 QETH_SEQ_NO_LENGTH);
889         qeth_release_buffer(channel, iob);
890 }
891 
892 static int qeth_setup_channel(struct qeth_channel *channel)
893 {
894         int cnt;
895 
896         QETH_DBF_TEXT(SETUP, 2, "setupch");
897         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
898                 channel->iob[cnt].data =
899                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
900                 if (channel->iob[cnt].data == NULL)
901                         break;
902                 channel->iob[cnt].state = BUF_STATE_FREE;
903                 channel->iob[cnt].channel = channel;
904                 channel->iob[cnt].callback = qeth_send_control_data_cb;
905                 channel->iob[cnt].rc = 0;
906         }
907         if (cnt < QETH_CMD_BUFFER_NO) {
908                 while (cnt-- > 0)
909                         kfree(channel->iob[cnt].data);
910                 return -ENOMEM;
911         }
912         channel->buf_no = 0;
913         channel->io_buf_no = 0;
914         atomic_set(&channel->irq_pending, 0);
915         spin_lock_init(&channel->iob_lock);
916 
917         init_waitqueue_head(&channel->wait_q);
918         return 0;
919 }
920 
921 static int qeth_set_thread_start_bit(struct qeth_card *card,
922                 unsigned long thread)
923 {
924         unsigned long flags;
925 
926         spin_lock_irqsave(&card->thread_mask_lock, flags);
927         if (!(card->thread_allowed_mask & thread) ||
928               (card->thread_start_mask & thread)) {
929                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
930                 return -EPERM;
931         }
932         card->thread_start_mask |= thread;
933         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
934         return 0;
935 }
936 
937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
938 {
939         unsigned long flags;
940 
941         spin_lock_irqsave(&card->thread_mask_lock, flags);
942         card->thread_start_mask &= ~thread;
943         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
944         wake_up(&card->wait_q);
945 }
946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
947 
948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
949 {
950         unsigned long flags;
951 
952         spin_lock_irqsave(&card->thread_mask_lock, flags);
953         card->thread_running_mask &= ~thread;
954         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
955         wake_up(&card->wait_q);
956 }
957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
958 
959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
960 {
961         unsigned long flags;
962         int rc = 0;
963 
964         spin_lock_irqsave(&card->thread_mask_lock, flags);
965         if (card->thread_start_mask & thread) {
966                 if ((card->thread_allowed_mask & thread) &&
967                     !(card->thread_running_mask & thread)) {
968                         rc = 1;
969                         card->thread_start_mask &= ~thread;
970                         card->thread_running_mask |= thread;
971                 } else
972                         rc = -EPERM;
973         }
974         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
975         return rc;
976 }
977 
978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
979 {
980         int rc = 0;
981 
982         wait_event(card->wait_q,
983                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
984         return rc;
985 }
986 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
987 
988 void qeth_schedule_recovery(struct qeth_card *card)
989 {
990         QETH_CARD_TEXT(card, 2, "startrec");
991         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
992                 schedule_work(&card->kernel_thread_starter);
993 }
994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
995 
996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
997 {
998         int dstat, cstat;
999         char *sense;
1000         struct qeth_card *card;
1001 
1002         sense = (char *) irb->ecw;
1003         cstat = irb->scsw.cmd.cstat;
1004         dstat = irb->scsw.cmd.dstat;
1005         card = CARD_FROM_CDEV(cdev);
1006 
1007         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1008                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1009                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1010                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1011                 dev_warn(&cdev->dev, "The qeth device driver "
1012                         "failed to recover an error on the device\n");
1013                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1014                         dev_name(&cdev->dev), dstat, cstat);
1015                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1016                                 16, 1, irb, 64, 1);
1017                 return 1;
1018         }
1019 
1020         if (dstat & DEV_STAT_UNIT_CHECK) {
1021                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1022                     SENSE_RESETTING_EVENT_FLAG) {
1023                         QETH_CARD_TEXT(card, 2, "REVIND");
1024                         return 1;
1025                 }
1026                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1027                     SENSE_COMMAND_REJECT_FLAG) {
1028                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1029                         return 1;
1030                 }
1031                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1032                         QETH_CARD_TEXT(card, 2, "AFFE");
1033                         return 1;
1034                 }
1035                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1036                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1037                         return 0;
1038                 }
1039                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1040                         return 1;
1041         }
1042         return 0;
1043 }
1044 
1045 static long __qeth_check_irb_error(struct ccw_device *cdev,
1046                 unsigned long intparm, struct irb *irb)
1047 {
1048         struct qeth_card *card;
1049 
1050         card = CARD_FROM_CDEV(cdev);
1051 
1052         if (!card || !IS_ERR(irb))
1053                 return 0;
1054 
1055         switch (PTR_ERR(irb)) {
1056         case -EIO:
1057                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1058                         dev_name(&cdev->dev));
1059                 QETH_CARD_TEXT(card, 2, "ckirberr");
1060                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1061                 break;
1062         case -ETIMEDOUT:
1063                 dev_warn(&cdev->dev, "A hardware operation timed out"
1064                         " on the device\n");
1065                 QETH_CARD_TEXT(card, 2, "ckirberr");
1066                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1067                 if (intparm == QETH_RCD_PARM) {
1068                         if (card->data.ccwdev == cdev) {
1069                                 card->data.state = CH_STATE_DOWN;
1070                                 wake_up(&card->wait_q);
1071                         }
1072                 }
1073                 break;
1074         default:
1075                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1076                         dev_name(&cdev->dev), PTR_ERR(irb));
1077                 QETH_CARD_TEXT(card, 2, "ckirberr");
1078                 QETH_CARD_TEXT(card, 2, "  rc???");
1079         }
1080         return PTR_ERR(irb);
1081 }
1082 
1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1084                 struct irb *irb)
1085 {
1086         int rc;
1087         int cstat, dstat;
1088         struct qeth_cmd_buffer *buffer;
1089         struct qeth_channel *channel;
1090         struct qeth_card *card;
1091         struct qeth_cmd_buffer *iob;
1092         __u8 index;
1093 
1094         if (__qeth_check_irb_error(cdev, intparm, irb))
1095                 return;
1096         cstat = irb->scsw.cmd.cstat;
1097         dstat = irb->scsw.cmd.dstat;
1098 
1099         card = CARD_FROM_CDEV(cdev);
1100         if (!card)
1101                 return;
1102 
1103         QETH_CARD_TEXT(card, 5, "irq");
1104 
1105         if (card->read.ccwdev == cdev) {
1106                 channel = &card->read;
1107                 QETH_CARD_TEXT(card, 5, "read");
1108         } else if (card->write.ccwdev == cdev) {
1109                 channel = &card->write;
1110                 QETH_CARD_TEXT(card, 5, "write");
1111         } else {
1112                 channel = &card->data;
1113                 QETH_CARD_TEXT(card, 5, "data");
1114         }
1115         atomic_set(&channel->irq_pending, 0);
1116 
1117         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1118                 channel->state = CH_STATE_STOPPED;
1119 
1120         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1121                 channel->state = CH_STATE_HALTED;
1122 
1123         /*let's wake up immediately on data channel*/
1124         if ((channel == &card->data) && (intparm != 0) &&
1125             (intparm != QETH_RCD_PARM))
1126                 goto out;
1127 
1128         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1129                 QETH_CARD_TEXT(card, 6, "clrchpar");
1130                 /* we don't have to handle this further */
1131                 intparm = 0;
1132         }
1133         if (intparm == QETH_HALT_CHANNEL_PARM) {
1134                 QETH_CARD_TEXT(card, 6, "hltchpar");
1135                 /* we don't have to handle this further */
1136                 intparm = 0;
1137         }
1138         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1139             (dstat & DEV_STAT_UNIT_CHECK) ||
1140             (cstat)) {
1141                 if (irb->esw.esw0.erw.cons) {
1142                         dev_warn(&channel->ccwdev->dev,
1143                                 "The qeth device driver failed to recover "
1144                                 "an error on the device\n");
1145                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1146                                 "0x%X dstat 0x%X\n",
1147                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1148                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1149                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1150                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1151                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1152                 }
1153                 if (intparm == QETH_RCD_PARM) {
1154                         channel->state = CH_STATE_DOWN;
1155                         goto out;
1156                 }
1157                 rc = qeth_get_problem(cdev, irb);
1158                 if (rc) {
1159                         qeth_clear_ipacmd_list(card);
1160                         qeth_schedule_recovery(card);
1161                         goto out;
1162                 }
1163         }
1164 
1165         if (intparm == QETH_RCD_PARM) {
1166                 channel->state = CH_STATE_RCD_DONE;
1167                 goto out;
1168         }
1169         if (intparm) {
1170                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1171                 buffer->state = BUF_STATE_PROCESSED;
1172         }
1173         if (channel == &card->data)
1174                 return;
1175         if (channel == &card->read &&
1176             channel->state == CH_STATE_UP)
1177                 qeth_issue_next_read(card);
1178 
1179         iob = channel->iob;
1180         index = channel->buf_no;
1181         while (iob[index].state == BUF_STATE_PROCESSED) {
1182                 if (iob[index].callback != NULL)
1183                         iob[index].callback(channel, iob + index);
1184 
1185                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1186         }
1187         channel->buf_no = index;
1188 out:
1189         wake_up(&card->wait_q);
1190         return;
1191 }
1192 
1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1194                 struct qeth_qdio_out_buffer *buf,
1195                 enum iucv_tx_notify notification)
1196 {
1197         struct sk_buff *skb;
1198 
1199         if (skb_queue_empty(&buf->skb_list))
1200                 goto out;
1201         skb = skb_peek(&buf->skb_list);
1202         while (skb) {
1203                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1204                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1205                 if (skb->protocol == ETH_P_AF_IUCV) {
1206                         if (skb->sk) {
1207                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1208                                 iucv->sk_txnotify(skb, notification);
1209                         }
1210                 }
1211                 if (skb_queue_is_last(&buf->skb_list, skb))
1212                         skb = NULL;
1213                 else
1214                         skb = skb_queue_next(&buf->skb_list, skb);
1215         }
1216 out:
1217         return;
1218 }
1219 
1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1221 {
1222         struct sk_buff *skb;
1223         struct iucv_sock *iucv;
1224         int notify_general_error = 0;
1225 
1226         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1227                 notify_general_error = 1;
1228 
1229         /* release may never happen from within CQ tasklet scope */
1230         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1231 
1232         skb = skb_dequeue(&buf->skb_list);
1233         while (skb) {
1234                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1235                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1236                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1237                         if (skb->sk) {
1238                                 iucv = iucv_sk(skb->sk);
1239                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1240                         }
1241                 }
1242                 atomic_dec(&skb->users);
1243                 dev_kfree_skb_any(skb);
1244                 skb = skb_dequeue(&buf->skb_list);
1245         }
1246 }
1247 
1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1249                 struct qeth_qdio_out_buffer *buf,
1250                 enum qeth_qdio_buffer_states newbufstate)
1251 {
1252         int i;
1253 
1254         /* is PCI flag set on buffer? */
1255         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1256                 atomic_dec(&queue->set_pci_flags_count);
1257 
1258         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1259                 qeth_release_skbs(buf);
1260         }
1261         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1262                 if (buf->buffer->element[i].addr && buf->is_header[i])
1263                         kmem_cache_free(qeth_core_header_cache,
1264                                 buf->buffer->element[i].addr);
1265                 buf->is_header[i] = 0;
1266                 buf->buffer->element[i].length = 0;
1267                 buf->buffer->element[i].addr = NULL;
1268                 buf->buffer->element[i].eflags = 0;
1269                 buf->buffer->element[i].sflags = 0;
1270         }
1271         buf->buffer->element[15].eflags = 0;
1272         buf->buffer->element[15].sflags = 0;
1273         buf->next_element_to_fill = 0;
1274         atomic_set(&buf->state, newbufstate);
1275 }
1276 
1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1278 {
1279         int j;
1280 
1281         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1282                 if (!q->bufs[j])
1283                         continue;
1284                 qeth_cleanup_handled_pending(q, j, 1);
1285                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1286                 if (free) {
1287                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1288                         q->bufs[j] = NULL;
1289                 }
1290         }
1291 }
1292 
1293 void qeth_clear_qdio_buffers(struct qeth_card *card)
1294 {
1295         int i;
1296 
1297         QETH_CARD_TEXT(card, 2, "clearqdbf");
1298         /* clear outbound buffers to free skbs */
1299         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1300                 if (card->qdio.out_qs[i]) {
1301                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1302                 }
1303         }
1304 }
1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1306 
1307 static void qeth_free_buffer_pool(struct qeth_card *card)
1308 {
1309         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1310         int i = 0;
1311         list_for_each_entry_safe(pool_entry, tmp,
1312                                  &card->qdio.init_pool.entry_list, init_list){
1313                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1314                         free_page((unsigned long)pool_entry->elements[i]);
1315                 list_del(&pool_entry->init_list);
1316                 kfree(pool_entry);
1317         }
1318 }
1319 
1320 static void qeth_clean_channel(struct qeth_channel *channel)
1321 {
1322         int cnt;
1323 
1324         QETH_DBF_TEXT(SETUP, 2, "freech");
1325         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1326                 kfree(channel->iob[cnt].data);
1327 }
1328 
1329 static void qeth_set_single_write_queues(struct qeth_card *card)
1330 {
1331         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1332             (card->qdio.no_out_queues == 4))
1333                 qeth_free_qdio_buffers(card);
1334 
1335         card->qdio.no_out_queues = 1;
1336         if (card->qdio.default_out_queue != 0)
1337                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1338 
1339         card->qdio.default_out_queue = 0;
1340 }
1341 
1342 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1343 {
1344         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1345             (card->qdio.no_out_queues == 1)) {
1346                 qeth_free_qdio_buffers(card);
1347                 card->qdio.default_out_queue = 2;
1348         }
1349         card->qdio.no_out_queues = 4;
1350 }
1351 
1352 static void qeth_update_from_chp_desc(struct qeth_card *card)
1353 {
1354         struct ccw_device *ccwdev;
1355         struct channel_path_desc *chp_dsc;
1356 
1357         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1358 
1359         ccwdev = card->data.ccwdev;
1360         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1361         if (!chp_dsc)
1362                 goto out;
1363 
1364         card->info.func_level = 0x4100 + chp_dsc->desc;
1365         if (card->info.type == QETH_CARD_TYPE_IQD)
1366                 goto out;
1367 
1368         /* CHPP field bit 6 == 1 -> single queue */
1369         if ((chp_dsc->chpp & 0x02) == 0x02)
1370                 qeth_set_single_write_queues(card);
1371         else
1372                 qeth_set_multiple_write_queues(card);
1373 out:
1374         kfree(chp_dsc);
1375         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1376         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1377 }
1378 
1379 static void qeth_init_qdio_info(struct qeth_card *card)
1380 {
1381         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1382         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1383         /* inbound */
1384         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1385         if (card->info.type == QETH_CARD_TYPE_IQD)
1386                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1387         else
1388                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1389         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1390         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1391         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1392 }
1393 
1394 static void qeth_set_intial_options(struct qeth_card *card)
1395 {
1396         card->options.route4.type = NO_ROUTER;
1397         card->options.route6.type = NO_ROUTER;
1398         card->options.fake_broadcast = 0;
1399         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1400         card->options.performance_stats = 0;
1401         card->options.rx_sg_cb = QETH_RX_SG_CB;
1402         card->options.isolation = ISOLATION_MODE_NONE;
1403         card->options.cq = QETH_CQ_DISABLED;
1404 }
1405 
1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1407 {
1408         unsigned long flags;
1409         int rc = 0;
1410 
1411         spin_lock_irqsave(&card->thread_mask_lock, flags);
1412         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1413                         (u8) card->thread_start_mask,
1414                         (u8) card->thread_allowed_mask,
1415                         (u8) card->thread_running_mask);
1416         rc = (card->thread_start_mask & thread);
1417         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1418         return rc;
1419 }
1420 
1421 static void qeth_start_kernel_thread(struct work_struct *work)
1422 {
1423         struct task_struct *ts;
1424         struct qeth_card *card = container_of(work, struct qeth_card,
1425                                         kernel_thread_starter);
1426         QETH_CARD_TEXT(card , 2, "strthrd");
1427 
1428         if (card->read.state != CH_STATE_UP &&
1429             card->write.state != CH_STATE_UP)
1430                 return;
1431         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1432                 ts = kthread_run(card->discipline->recover, (void *)card,
1433                                 "qeth_recover");
1434                 if (IS_ERR(ts)) {
1435                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1436                         qeth_clear_thread_running_bit(card,
1437                                 QETH_RECOVER_THREAD);
1438                 }
1439         }
1440 }
1441 
1442 static void qeth_buffer_reclaim_work(struct work_struct *);
1443 static int qeth_setup_card(struct qeth_card *card)
1444 {
1445 
1446         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1447         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1448 
1449         card->read.state  = CH_STATE_DOWN;
1450         card->write.state = CH_STATE_DOWN;
1451         card->data.state  = CH_STATE_DOWN;
1452         card->state = CARD_STATE_DOWN;
1453         card->lan_online = 0;
1454         card->read_or_write_problem = 0;
1455         card->dev = NULL;
1456         spin_lock_init(&card->vlanlock);
1457         spin_lock_init(&card->mclock);
1458         spin_lock_init(&card->lock);
1459         spin_lock_init(&card->ip_lock);
1460         spin_lock_init(&card->thread_mask_lock);
1461         mutex_init(&card->conf_mutex);
1462         mutex_init(&card->discipline_mutex);
1463         card->thread_start_mask = 0;
1464         card->thread_allowed_mask = 0;
1465         card->thread_running_mask = 0;
1466         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1467         INIT_LIST_HEAD(&card->ip_list);
1468         INIT_LIST_HEAD(card->ip_tbd_list);
1469         INIT_LIST_HEAD(&card->cmd_waiter_list);
1470         init_waitqueue_head(&card->wait_q);
1471         /* initial options */
1472         qeth_set_intial_options(card);
1473         /* IP address takeover */
1474         INIT_LIST_HEAD(&card->ipato.entries);
1475         card->ipato.enabled = 0;
1476         card->ipato.invert4 = 0;
1477         card->ipato.invert6 = 0;
1478         /* init QDIO stuff */
1479         qeth_init_qdio_info(card);
1480         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1481         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1482         return 0;
1483 }
1484 
1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1486 {
1487         struct qeth_card *card = container_of(slr, struct qeth_card,
1488                                         qeth_service_level);
1489         if (card->info.mcl_level[0])
1490                 seq_printf(m, "qeth: %s firmware level %s\n",
1491                         CARD_BUS_ID(card), card->info.mcl_level);
1492 }
1493 
1494 static struct qeth_card *qeth_alloc_card(void)
1495 {
1496         struct qeth_card *card;
1497 
1498         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1499         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1500         if (!card)
1501                 goto out;
1502         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1503         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1504         if (!card->ip_tbd_list) {
1505                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1506                 goto out_card;
1507         }
1508         if (qeth_setup_channel(&card->read))
1509                 goto out_ip;
1510         if (qeth_setup_channel(&card->write))
1511                 goto out_channel;
1512         card->options.layer2 = -1;
1513         card->qeth_service_level.seq_print = qeth_core_sl_print;
1514         register_service_level(&card->qeth_service_level);
1515         return card;
1516 
1517 out_channel:
1518         qeth_clean_channel(&card->read);
1519 out_ip:
1520         kfree(card->ip_tbd_list);
1521 out_card:
1522         kfree(card);
1523 out:
1524         return NULL;
1525 }
1526 
1527 static int qeth_determine_card_type(struct qeth_card *card)
1528 {
1529         int i = 0;
1530 
1531         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1532 
1533         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1534         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1535         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1536                 if ((CARD_RDEV(card)->id.dev_type ==
1537                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1538                     (CARD_RDEV(card)->id.dev_model ==
1539                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1540                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1541                         card->qdio.no_out_queues =
1542                                 known_devices[i][QETH_QUEUE_NO_IND];
1543                         card->qdio.no_in_queues = 1;
1544                         card->info.is_multicast_different =
1545                                 known_devices[i][QETH_MULTICAST_IND];
1546                         qeth_update_from_chp_desc(card);
1547                         return 0;
1548                 }
1549                 i++;
1550         }
1551         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1552         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1553                 "unknown type\n");
1554         return -ENOENT;
1555 }
1556 
1557 static int qeth_clear_channel(struct qeth_channel *channel)
1558 {
1559         unsigned long flags;
1560         struct qeth_card *card;
1561         int rc;
1562 
1563         card = CARD_FROM_CDEV(channel->ccwdev);
1564         QETH_CARD_TEXT(card, 3, "clearch");
1565         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1566         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1567         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1568 
1569         if (rc)
1570                 return rc;
1571         rc = wait_event_interruptible_timeout(card->wait_q,
1572                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1573         if (rc == -ERESTARTSYS)
1574                 return rc;
1575         if (channel->state != CH_STATE_STOPPED)
1576                 return -ETIME;
1577         channel->state = CH_STATE_DOWN;
1578         return 0;
1579 }
1580 
1581 static int qeth_halt_channel(struct qeth_channel *channel)
1582 {
1583         unsigned long flags;
1584         struct qeth_card *card;
1585         int rc;
1586 
1587         card = CARD_FROM_CDEV(channel->ccwdev);
1588         QETH_CARD_TEXT(card, 3, "haltch");
1589         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1590         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1591         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1592 
1593         if (rc)
1594                 return rc;
1595         rc = wait_event_interruptible_timeout(card->wait_q,
1596                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1597         if (rc == -ERESTARTSYS)
1598                 return rc;
1599         if (channel->state != CH_STATE_HALTED)
1600                 return -ETIME;
1601         return 0;
1602 }
1603 
1604 static int qeth_halt_channels(struct qeth_card *card)
1605 {
1606         int rc1 = 0, rc2 = 0, rc3 = 0;
1607 
1608         QETH_CARD_TEXT(card, 3, "haltchs");
1609         rc1 = qeth_halt_channel(&card->read);
1610         rc2 = qeth_halt_channel(&card->write);
1611         rc3 = qeth_halt_channel(&card->data);
1612         if (rc1)
1613                 return rc1;
1614         if (rc2)
1615                 return rc2;
1616         return rc3;
1617 }
1618 
1619 static int qeth_clear_channels(struct qeth_card *card)
1620 {
1621         int rc1 = 0, rc2 = 0, rc3 = 0;
1622 
1623         QETH_CARD_TEXT(card, 3, "clearchs");
1624         rc1 = qeth_clear_channel(&card->read);
1625         rc2 = qeth_clear_channel(&card->write);
1626         rc3 = qeth_clear_channel(&card->data);
1627         if (rc1)
1628                 return rc1;
1629         if (rc2)
1630                 return rc2;
1631         return rc3;
1632 }
1633 
1634 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1635 {
1636         int rc = 0;
1637 
1638         QETH_CARD_TEXT(card, 3, "clhacrd");
1639 
1640         if (halt)
1641                 rc = qeth_halt_channels(card);
1642         if (rc)
1643                 return rc;
1644         return qeth_clear_channels(card);
1645 }
1646 
1647 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1648 {
1649         int rc = 0;
1650 
1651         QETH_CARD_TEXT(card, 3, "qdioclr");
1652         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1653                 QETH_QDIO_CLEANING)) {
1654         case QETH_QDIO_ESTABLISHED:
1655                 if (card->info.type == QETH_CARD_TYPE_IQD)
1656                         rc = qdio_shutdown(CARD_DDEV(card),
1657                                 QDIO_FLAG_CLEANUP_USING_HALT);
1658                 else
1659                         rc = qdio_shutdown(CARD_DDEV(card),
1660                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1661                 if (rc)
1662                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1663                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1664                 break;
1665         case QETH_QDIO_CLEANING:
1666                 return rc;
1667         default:
1668                 break;
1669         }
1670         rc = qeth_clear_halt_card(card, use_halt);
1671         if (rc)
1672                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1673         card->state = CARD_STATE_DOWN;
1674         return rc;
1675 }
1676 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1677 
1678 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1679                                int *length)
1680 {
1681         struct ciw *ciw;
1682         char *rcd_buf;
1683         int ret;
1684         struct qeth_channel *channel = &card->data;
1685         unsigned long flags;
1686 
1687         /*
1688          * scan for RCD command in extended SenseID data
1689          */
1690         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1691         if (!ciw || ciw->cmd == 0)
1692                 return -EOPNOTSUPP;
1693         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1694         if (!rcd_buf)
1695                 return -ENOMEM;
1696 
1697         channel->ccw.cmd_code = ciw->cmd;
1698         channel->ccw.cda = (__u32) __pa(rcd_buf);
1699         channel->ccw.count = ciw->count;
1700         channel->ccw.flags = CCW_FLAG_SLI;
1701         channel->state = CH_STATE_RCD;
1702         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1703         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1704                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1705                                        QETH_RCD_TIMEOUT);
1706         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1707         if (!ret)
1708                 wait_event(card->wait_q,
1709                            (channel->state == CH_STATE_RCD_DONE ||
1710                             channel->state == CH_STATE_DOWN));
1711         if (channel->state == CH_STATE_DOWN)
1712                 ret = -EIO;
1713         else
1714                 channel->state = CH_STATE_DOWN;
1715         if (ret) {
1716                 kfree(rcd_buf);
1717                 *buffer = NULL;
1718                 *length = 0;
1719         } else {
1720                 *length = ciw->count;
1721                 *buffer = rcd_buf;
1722         }
1723         return ret;
1724 }
1725 
1726 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1727 {
1728         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1729         card->info.chpid = prcd[30];
1730         card->info.unit_addr2 = prcd[31];
1731         card->info.cula = prcd[63];
1732         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1733                                (prcd[0x11] == _ascebc['M']));
1734 }
1735 
1736 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1737 {
1738         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1739 
1740         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1741             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1742                 card->info.blkt.time_total = 0;
1743                 card->info.blkt.inter_packet = 0;
1744                 card->info.blkt.inter_packet_jumbo = 0;
1745         } else {
1746                 card->info.blkt.time_total = 250;
1747                 card->info.blkt.inter_packet = 5;
1748                 card->info.blkt.inter_packet_jumbo = 15;
1749         }
1750 }
1751 
1752 static void qeth_init_tokens(struct qeth_card *card)
1753 {
1754         card->token.issuer_rm_w = 0x00010103UL;
1755         card->token.cm_filter_w = 0x00010108UL;
1756         card->token.cm_connection_w = 0x0001010aUL;
1757         card->token.ulp_filter_w = 0x0001010bUL;
1758         card->token.ulp_connection_w = 0x0001010dUL;
1759 }
1760 
1761 static void qeth_init_func_level(struct qeth_card *card)
1762 {
1763         switch (card->info.type) {
1764         case QETH_CARD_TYPE_IQD:
1765                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1766                 break;
1767         case QETH_CARD_TYPE_OSD:
1768         case QETH_CARD_TYPE_OSN:
1769                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1770                 break;
1771         default:
1772                 break;
1773         }
1774 }
1775 
1776 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1777                 void (*idx_reply_cb)(struct qeth_channel *,
1778                         struct qeth_cmd_buffer *))
1779 {
1780         struct qeth_cmd_buffer *iob;
1781         unsigned long flags;
1782         int rc;
1783         struct qeth_card *card;
1784 
1785         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1786         card = CARD_FROM_CDEV(channel->ccwdev);
1787         iob = qeth_get_buffer(channel);
1788         if (!iob)
1789                 return -ENOMEM;
1790         iob->callback = idx_reply_cb;
1791         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1792         channel->ccw.count = QETH_BUFSIZE;
1793         channel->ccw.cda = (__u32) __pa(iob->data);
1794 
1795         wait_event(card->wait_q,
1796                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1797         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1798         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1799         rc = ccw_device_start(channel->ccwdev,
1800                               &channel->ccw, (addr_t) iob, 0, 0);
1801         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1802 
1803         if (rc) {
1804                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1805                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1806                 atomic_set(&channel->irq_pending, 0);
1807                 wake_up(&card->wait_q);
1808                 return rc;
1809         }
1810         rc = wait_event_interruptible_timeout(card->wait_q,
1811                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1812         if (rc == -ERESTARTSYS)
1813                 return rc;
1814         if (channel->state != CH_STATE_UP) {
1815                 rc = -ETIME;
1816                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1817                 qeth_clear_cmd_buffers(channel);
1818         } else
1819                 rc = 0;
1820         return rc;
1821 }
1822 
1823 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1824                 void (*idx_reply_cb)(struct qeth_channel *,
1825                         struct qeth_cmd_buffer *))
1826 {
1827         struct qeth_card *card;
1828         struct qeth_cmd_buffer *iob;
1829         unsigned long flags;
1830         __u16 temp;
1831         __u8 tmp;
1832         int rc;
1833         struct ccw_dev_id temp_devid;
1834 
1835         card = CARD_FROM_CDEV(channel->ccwdev);
1836 
1837         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1838 
1839         iob = qeth_get_buffer(channel);
1840         if (!iob)
1841                 return -ENOMEM;
1842         iob->callback = idx_reply_cb;
1843         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1844         channel->ccw.count = IDX_ACTIVATE_SIZE;
1845         channel->ccw.cda = (__u32) __pa(iob->data);
1846         if (channel == &card->write) {
1847                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1848                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1849                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1850                 card->seqno.trans_hdr++;
1851         } else {
1852                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1853                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1854                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1855         }
1856         tmp = ((__u8)card->info.portno) | 0x80;
1857         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1858         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1859                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1860         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1861                &card->info.func_level, sizeof(__u16));
1862         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1863         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1864         temp = (card->info.cula << 8) + card->info.unit_addr2;
1865         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1866 
1867         wait_event(card->wait_q,
1868                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1869         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1870         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1871         rc = ccw_device_start(channel->ccwdev,
1872                               &channel->ccw, (addr_t) iob, 0, 0);
1873         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1874 
1875         if (rc) {
1876                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1877                         rc);
1878                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1879                 atomic_set(&channel->irq_pending, 0);
1880                 wake_up(&card->wait_q);
1881                 return rc;
1882         }
1883         rc = wait_event_interruptible_timeout(card->wait_q,
1884                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1885         if (rc == -ERESTARTSYS)
1886                 return rc;
1887         if (channel->state != CH_STATE_ACTIVATING) {
1888                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1889                         " failed to recover an error on the device\n");
1890                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1891                         dev_name(&channel->ccwdev->dev));
1892                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1893                 qeth_clear_cmd_buffers(channel);
1894                 return -ETIME;
1895         }
1896         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1897 }
1898 
1899 static int qeth_peer_func_level(int level)
1900 {
1901         if ((level & 0xff) == 8)
1902                 return (level & 0xff) + 0x400;
1903         if (((level >> 8) & 3) == 1)
1904                 return (level & 0xff) + 0x200;
1905         return level;
1906 }
1907 
1908 static void qeth_idx_write_cb(struct qeth_channel *channel,
1909                 struct qeth_cmd_buffer *iob)
1910 {
1911         struct qeth_card *card;
1912         __u16 temp;
1913 
1914         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1915 
1916         if (channel->state == CH_STATE_DOWN) {
1917                 channel->state = CH_STATE_ACTIVATING;
1918                 goto out;
1919         }
1920         card = CARD_FROM_CDEV(channel->ccwdev);
1921 
1922         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1923                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1924                         dev_err(&card->write.ccwdev->dev,
1925                                 "The adapter is used exclusively by another "
1926                                 "host\n");
1927                 else
1928                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1929                                 " negative reply\n",
1930                                 dev_name(&card->write.ccwdev->dev));
1931                 goto out;
1932         }
1933         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1934         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1935                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1936                         "function level mismatch (sent: 0x%x, received: "
1937                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1938                         card->info.func_level, temp);
1939                 goto out;
1940         }
1941         channel->state = CH_STATE_UP;
1942 out:
1943         qeth_release_buffer(channel, iob);
1944 }
1945 
1946 static void qeth_idx_read_cb(struct qeth_channel *channel,
1947                 struct qeth_cmd_buffer *iob)
1948 {
1949         struct qeth_card *card;
1950         __u16 temp;
1951 
1952         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1953         if (channel->state == CH_STATE_DOWN) {
1954                 channel->state = CH_STATE_ACTIVATING;
1955                 goto out;
1956         }
1957 
1958         card = CARD_FROM_CDEV(channel->ccwdev);
1959         if (qeth_check_idx_response(card, iob->data))
1960                         goto out;
1961 
1962         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1963                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1964                 case QETH_IDX_ACT_ERR_EXCL:
1965                         dev_err(&card->write.ccwdev->dev,
1966                                 "The adapter is used exclusively by another "
1967                                 "host\n");
1968                         break;
1969                 case QETH_IDX_ACT_ERR_AUTH:
1970                 case QETH_IDX_ACT_ERR_AUTH_USER:
1971                         dev_err(&card->read.ccwdev->dev,
1972                                 "Setting the device online failed because of "
1973                                 "insufficient authorization\n");
1974                         break;
1975                 default:
1976                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1977                                 " negative reply\n",
1978                                 dev_name(&card->read.ccwdev->dev));
1979                 }
1980                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1981                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1982                 goto out;
1983         }
1984 
1985         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1986         if (temp != qeth_peer_func_level(card->info.func_level)) {
1987                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1988                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1989                         dev_name(&card->read.ccwdev->dev),
1990                         card->info.func_level, temp);
1991                 goto out;
1992         }
1993         memcpy(&card->token.issuer_rm_r,
1994                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1995                QETH_MPC_TOKEN_LENGTH);
1996         memcpy(&card->info.mcl_level[0],
1997                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1998         channel->state = CH_STATE_UP;
1999 out:
2000         qeth_release_buffer(channel, iob);
2001 }
2002 
2003 void qeth_prepare_control_data(struct qeth_card *card, int len,
2004                 struct qeth_cmd_buffer *iob)
2005 {
2006         qeth_setup_ccw(&card->write, iob->data, len);
2007         iob->callback = qeth_release_buffer;
2008 
2009         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2010                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2011         card->seqno.trans_hdr++;
2012         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2013                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2014         card->seqno.pdu_hdr++;
2015         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2016                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2017         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2018 }
2019 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2020 
2021 /**
2022  * qeth_send_control_data() -   send control command to the card
2023  * @card:                       qeth_card structure pointer
2024  * @len:                        size of the command buffer
2025  * @iob:                        qeth_cmd_buffer pointer
2026  * @reply_cb:                   callback function pointer
2027  * @cb_card:                    pointer to the qeth_card structure
2028  * @cb_reply:                   pointer to the qeth_reply structure
2029  * @cb_cmd:                     pointer to the original iob for non-IPA
2030  *                              commands, or to the qeth_ipa_cmd structure
2031  *                              for the IPA commands.
2032  * @reply_param:                private pointer passed to the callback
2033  *
2034  * Returns the value of the `return_code' field of the response
2035  * block returned from the hardware, or other error indication.
2036  * Value of zero indicates successful execution of the command.
2037  *
2038  * Callback function gets called one or more times, with cb_cmd
2039  * pointing to the response returned by the hardware. Callback
2040  * function must return non-zero if more reply blocks are expected,
2041  * and zero if the last or only reply block is received. Callback
2042  * function can get the value of the reply_param pointer from the
2043  * field 'param' of the structure qeth_reply.
2044  */
2045 
2046 int qeth_send_control_data(struct qeth_card *card, int len,
2047                 struct qeth_cmd_buffer *iob,
2048                 int (*reply_cb)(struct qeth_card *cb_card,
2049                                 struct qeth_reply *cb_reply,
2050                                 unsigned long cb_cmd),
2051                 void *reply_param)
2052 {
2053         int rc;
2054         unsigned long flags;
2055         struct qeth_reply *reply = NULL;
2056         unsigned long timeout, event_timeout;
2057         struct qeth_ipa_cmd *cmd;
2058 
2059         QETH_CARD_TEXT(card, 2, "sendctl");
2060 
2061         if (card->read_or_write_problem) {
2062                 qeth_release_buffer(iob->channel, iob);
2063                 return -EIO;
2064         }
2065         reply = qeth_alloc_reply(card);
2066         if (!reply) {
2067                 return -ENOMEM;
2068         }
2069         reply->callback = reply_cb;
2070         reply->param = reply_param;
2071         if (card->state == CARD_STATE_DOWN)
2072                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2073         else
2074                 reply->seqno = card->seqno.ipa++;
2075         init_waitqueue_head(&reply->wait_q);
2076         spin_lock_irqsave(&card->lock, flags);
2077         list_add_tail(&reply->list, &card->cmd_waiter_list);
2078         spin_unlock_irqrestore(&card->lock, flags);
2079         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2080 
2081         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2082         qeth_prepare_control_data(card, len, iob);
2083 
2084         if (IS_IPA(iob->data))
2085                 event_timeout = QETH_IPA_TIMEOUT;
2086         else
2087                 event_timeout = QETH_TIMEOUT;
2088         timeout = jiffies + event_timeout;
2089 
2090         QETH_CARD_TEXT(card, 6, "noirqpnd");
2091         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2092         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2093                               (addr_t) iob, 0, 0);
2094         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2095         if (rc) {
2096                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2097                         "ccw_device_start rc = %i\n",
2098                         dev_name(&card->write.ccwdev->dev), rc);
2099                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2100                 spin_lock_irqsave(&card->lock, flags);
2101                 list_del_init(&reply->list);
2102                 qeth_put_reply(reply);
2103                 spin_unlock_irqrestore(&card->lock, flags);
2104                 qeth_release_buffer(iob->channel, iob);
2105                 atomic_set(&card->write.irq_pending, 0);
2106                 wake_up(&card->wait_q);
2107                 return rc;
2108         }
2109 
2110         /* we have only one long running ipassist, since we can ensure
2111            process context of this command we can sleep */
2112         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2113         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2114             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2115                 if (!wait_event_timeout(reply->wait_q,
2116                     atomic_read(&reply->received), event_timeout))
2117                         goto time_err;
2118         } else {
2119                 while (!atomic_read(&reply->received)) {
2120                         if (time_after(jiffies, timeout))
2121                                 goto time_err;
2122                         cpu_relax();
2123                 }
2124         }
2125 
2126         if (reply->rc == -EIO)
2127                 goto error;
2128         rc = reply->rc;
2129         qeth_put_reply(reply);
2130         return rc;
2131 
2132 time_err:
2133         reply->rc = -ETIME;
2134         spin_lock_irqsave(&reply->card->lock, flags);
2135         list_del_init(&reply->list);
2136         spin_unlock_irqrestore(&reply->card->lock, flags);
2137         atomic_inc(&reply->received);
2138 error:
2139         atomic_set(&card->write.irq_pending, 0);
2140         qeth_release_buffer(iob->channel, iob);
2141         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2142         rc = reply->rc;
2143         qeth_put_reply(reply);
2144         return rc;
2145 }
2146 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2147 
2148 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2149                 unsigned long data)
2150 {
2151         struct qeth_cmd_buffer *iob;
2152 
2153         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2154 
2155         iob = (struct qeth_cmd_buffer *) data;
2156         memcpy(&card->token.cm_filter_r,
2157                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2158                QETH_MPC_TOKEN_LENGTH);
2159         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2160         return 0;
2161 }
2162 
2163 static int qeth_cm_enable(struct qeth_card *card)
2164 {
2165         int rc;
2166         struct qeth_cmd_buffer *iob;
2167 
2168         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2169 
2170         iob = qeth_wait_for_buffer(&card->write);
2171         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2172         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2173                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2174         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2175                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2176 
2177         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2178                                     qeth_cm_enable_cb, NULL);
2179         return rc;
2180 }
2181 
2182 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2183                 unsigned long data)
2184 {
2185 
2186         struct qeth_cmd_buffer *iob;
2187 
2188         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2189 
2190         iob = (struct qeth_cmd_buffer *) data;
2191         memcpy(&card->token.cm_connection_r,
2192                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2193                QETH_MPC_TOKEN_LENGTH);
2194         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2195         return 0;
2196 }
2197 
2198 static int qeth_cm_setup(struct qeth_card *card)
2199 {
2200         int rc;
2201         struct qeth_cmd_buffer *iob;
2202 
2203         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2204 
2205         iob = qeth_wait_for_buffer(&card->write);
2206         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2207         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2208                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2209         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2210                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2211         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2212                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2213         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2214                                     qeth_cm_setup_cb, NULL);
2215         return rc;
2216 
2217 }
2218 
2219 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2220 {
2221         switch (card->info.type) {
2222         case QETH_CARD_TYPE_UNKNOWN:
2223                 return 1500;
2224         case QETH_CARD_TYPE_IQD:
2225                 return card->info.max_mtu;
2226         case QETH_CARD_TYPE_OSD:
2227                 switch (card->info.link_type) {
2228                 case QETH_LINK_TYPE_HSTR:
2229                 case QETH_LINK_TYPE_LANE_TR:
2230                         return 2000;
2231                 default:
2232                         return card->options.layer2 ? 1500 : 1492;
2233                 }
2234         case QETH_CARD_TYPE_OSM:
2235         case QETH_CARD_TYPE_OSX:
2236                 return card->options.layer2 ? 1500 : 1492;
2237         default:
2238                 return 1500;
2239         }
2240 }
2241 
2242 static inline int qeth_get_mtu_outof_framesize(int framesize)
2243 {
2244         switch (framesize) {
2245         case 0x4000:
2246                 return 8192;
2247         case 0x6000:
2248                 return 16384;
2249         case 0xa000:
2250                 return 32768;
2251         case 0xffff:
2252                 return 57344;
2253         default:
2254                 return 0;
2255         }
2256 }
2257 
2258 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2259 {
2260         switch (card->info.type) {
2261         case QETH_CARD_TYPE_OSD:
2262         case QETH_CARD_TYPE_OSM:
2263         case QETH_CARD_TYPE_OSX:
2264         case QETH_CARD_TYPE_IQD:
2265                 return ((mtu >= 576) &&
2266                         (mtu <= card->info.max_mtu));
2267         case QETH_CARD_TYPE_OSN:
2268         case QETH_CARD_TYPE_UNKNOWN:
2269         default:
2270                 return 1;
2271         }
2272 }
2273 
2274 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2275                 unsigned long data)
2276 {
2277 
2278         __u16 mtu, framesize;
2279         __u16 len;
2280         __u8 link_type;
2281         struct qeth_cmd_buffer *iob;
2282 
2283         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2284 
2285         iob = (struct qeth_cmd_buffer *) data;
2286         memcpy(&card->token.ulp_filter_r,
2287                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2288                QETH_MPC_TOKEN_LENGTH);
2289         if (card->info.type == QETH_CARD_TYPE_IQD) {
2290                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2291                 mtu = qeth_get_mtu_outof_framesize(framesize);
2292                 if (!mtu) {
2293                         iob->rc = -EINVAL;
2294                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2295                         return 0;
2296                 }
2297                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2298                         /* frame size has changed */
2299                         if (card->dev &&
2300                             ((card->dev->mtu == card->info.initial_mtu) ||
2301                              (card->dev->mtu > mtu)))
2302                                 card->dev->mtu = mtu;
2303                         qeth_free_qdio_buffers(card);
2304                 }
2305                 card->info.initial_mtu = mtu;
2306                 card->info.max_mtu = mtu;
2307                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2308         } else {
2309                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2310                         iob->data);
2311                 card->info.initial_mtu = min(card->info.max_mtu,
2312                                         qeth_get_initial_mtu_for_card(card));
2313                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2314         }
2315 
2316         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2317         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2318                 memcpy(&link_type,
2319                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2320                 card->info.link_type = link_type;
2321         } else
2322                 card->info.link_type = 0;
2323         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2324         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2325         return 0;
2326 }
2327 
2328 static int qeth_ulp_enable(struct qeth_card *card)
2329 {
2330         int rc;
2331         char prot_type;
2332         struct qeth_cmd_buffer *iob;
2333 
2334         /*FIXME: trace view callbacks*/
2335         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2336 
2337         iob = qeth_wait_for_buffer(&card->write);
2338         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2339 
2340         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2341                 (__u8) card->info.portno;
2342         if (card->options.layer2)
2343                 if (card->info.type == QETH_CARD_TYPE_OSN)
2344                         prot_type = QETH_PROT_OSN2;
2345                 else
2346                         prot_type = QETH_PROT_LAYER2;
2347         else
2348                 prot_type = QETH_PROT_TCPIP;
2349 
2350         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2351         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2352                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2353         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2354                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2355         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2356                                     qeth_ulp_enable_cb, NULL);
2357         return rc;
2358 
2359 }
2360 
2361 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2362                 unsigned long data)
2363 {
2364         struct qeth_cmd_buffer *iob;
2365 
2366         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2367 
2368         iob = (struct qeth_cmd_buffer *) data;
2369         memcpy(&card->token.ulp_connection_r,
2370                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2371                QETH_MPC_TOKEN_LENGTH);
2372         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2373                      3)) {
2374                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2375                 dev_err(&card->gdev->dev, "A connection could not be "
2376                         "established because of an OLM limit\n");
2377                 iob->rc = -EMLINK;
2378         }
2379         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2380         return 0;
2381 }
2382 
2383 static int qeth_ulp_setup(struct qeth_card *card)
2384 {
2385         int rc;
2386         __u16 temp;
2387         struct qeth_cmd_buffer *iob;
2388         struct ccw_dev_id dev_id;
2389 
2390         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2391 
2392         iob = qeth_wait_for_buffer(&card->write);
2393         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2394 
2395         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2396                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2397         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2398                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2399         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2400                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2401 
2402         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2403         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2404         temp = (card->info.cula << 8) + card->info.unit_addr2;
2405         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2406         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2407                                     qeth_ulp_setup_cb, NULL);
2408         return rc;
2409 }
2410 
2411 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2412 {
2413         int rc;
2414         struct qeth_qdio_out_buffer *newbuf;
2415 
2416         rc = 0;
2417         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2418         if (!newbuf) {
2419                 rc = -ENOMEM;
2420                 goto out;
2421         }
2422         newbuf->buffer = q->qdio_bufs[bidx];
2423         skb_queue_head_init(&newbuf->skb_list);
2424         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2425         newbuf->q = q;
2426         newbuf->aob = NULL;
2427         newbuf->next_pending = q->bufs[bidx];
2428         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2429         q->bufs[bidx] = newbuf;
2430         if (q->bufstates) {
2431                 q->bufstates[bidx].user = newbuf;
2432                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2433                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2434                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2435                                 (long) newbuf->next_pending);
2436         }
2437 out:
2438         return rc;
2439 }
2440 
2441 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2442 {
2443         if (!q)
2444                 return;
2445 
2446         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2447         kfree(q);
2448 }
2449 
2450 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2451 {
2452         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2453 
2454         if (!q)
2455                 return NULL;
2456 
2457         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2458                 kfree(q);
2459                 return NULL;
2460         }
2461         return q;
2462 }
2463 
2464 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2465 {
2466         int i, j;
2467 
2468         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2469 
2470         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2471                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2472                 return 0;
2473 
2474         QETH_DBF_TEXT(SETUP, 2, "inq");
2475         card->qdio.in_q = qeth_alloc_qdio_queue();
2476         if (!card->qdio.in_q)
2477                 goto out_nomem;
2478 
2479         /* inbound buffer pool */
2480         if (qeth_alloc_buffer_pool(card))
2481                 goto out_freeinq;
2482 
2483         /* outbound */
2484         card->qdio.out_qs =
2485                 kzalloc(card->qdio.no_out_queues *
2486                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2487         if (!card->qdio.out_qs)
2488                 goto out_freepool;
2489         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2490                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2491                 if (!card->qdio.out_qs[i])
2492                         goto out_freeoutq;
2493                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2494                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2495                 card->qdio.out_qs[i]->queue_no = i;
2496                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2497                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2498                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2499                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2500                                 goto out_freeoutqbufs;
2501                 }
2502         }
2503 
2504         /* completion */
2505         if (qeth_alloc_cq(card))
2506                 goto out_freeoutq;
2507 
2508         return 0;
2509 
2510 out_freeoutqbufs:
2511         while (j > 0) {
2512                 --j;
2513                 kmem_cache_free(qeth_qdio_outbuf_cache,
2514                                 card->qdio.out_qs[i]->bufs[j]);
2515                 card->qdio.out_qs[i]->bufs[j] = NULL;
2516         }
2517 out_freeoutq:
2518         while (i > 0) {
2519                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2520                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2521         }
2522         kfree(card->qdio.out_qs);
2523         card->qdio.out_qs = NULL;
2524 out_freepool:
2525         qeth_free_buffer_pool(card);
2526 out_freeinq:
2527         qeth_free_qdio_queue(card->qdio.in_q);
2528         card->qdio.in_q = NULL;
2529 out_nomem:
2530         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2531         return -ENOMEM;
2532 }
2533 
2534 static void qeth_free_qdio_buffers(struct qeth_card *card)
2535 {
2536         int i, j;
2537 
2538         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2539                 QETH_QDIO_UNINITIALIZED)
2540                 return;
2541 
2542         qeth_free_cq(card);
2543         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2544         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2545                 if (card->qdio.in_q->bufs[j].rx_skb)
2546                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2547         }
2548         qeth_free_qdio_queue(card->qdio.in_q);
2549         card->qdio.in_q = NULL;
2550         /* inbound buffer pool */
2551         qeth_free_buffer_pool(card);
2552         /* free outbound qdio_qs */
2553         if (card->qdio.out_qs) {
2554                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2555                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2556                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2557                 }
2558                 kfree(card->qdio.out_qs);
2559                 card->qdio.out_qs = NULL;
2560         }
2561 }
2562 
2563 static void qeth_create_qib_param_field(struct qeth_card *card,
2564                 char *param_field)
2565 {
2566 
2567         param_field[0] = _ascebc['P'];
2568         param_field[1] = _ascebc['C'];
2569         param_field[2] = _ascebc['I'];
2570         param_field[3] = _ascebc['T'];
2571         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2572         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2573         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2574 }
2575 
2576 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2577                 char *param_field)
2578 {
2579         param_field[16] = _ascebc['B'];
2580         param_field[17] = _ascebc['L'];
2581         param_field[18] = _ascebc['K'];
2582         param_field[19] = _ascebc['T'];
2583         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2584         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2585         *((unsigned int *) (&param_field[28])) =
2586                 card->info.blkt.inter_packet_jumbo;
2587 }
2588 
2589 static int qeth_qdio_activate(struct qeth_card *card)
2590 {
2591         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2592         return qdio_activate(CARD_DDEV(card));
2593 }
2594 
2595 static int qeth_dm_act(struct qeth_card *card)
2596 {
2597         int rc;
2598         struct qeth_cmd_buffer *iob;
2599 
2600         QETH_DBF_TEXT(SETUP, 2, "dmact");
2601 
2602         iob = qeth_wait_for_buffer(&card->write);
2603         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2604 
2605         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2606                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2607         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2608                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2609         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2610         return rc;
2611 }
2612 
2613 static int qeth_mpc_initialize(struct qeth_card *card)
2614 {
2615         int rc;
2616 
2617         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2618 
2619         rc = qeth_issue_next_read(card);
2620         if (rc) {
2621                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2622                 return rc;
2623         }
2624         rc = qeth_cm_enable(card);
2625         if (rc) {
2626                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2627                 goto out_qdio;
2628         }
2629         rc = qeth_cm_setup(card);
2630         if (rc) {
2631                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2632                 goto out_qdio;
2633         }
2634         rc = qeth_ulp_enable(card);
2635         if (rc) {
2636                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2637                 goto out_qdio;
2638         }
2639         rc = qeth_ulp_setup(card);
2640         if (rc) {
2641                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2642                 goto out_qdio;
2643         }
2644         rc = qeth_alloc_qdio_buffers(card);
2645         if (rc) {
2646                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2647                 goto out_qdio;
2648         }
2649         rc = qeth_qdio_establish(card);
2650         if (rc) {
2651                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2652                 qeth_free_qdio_buffers(card);
2653                 goto out_qdio;
2654         }
2655         rc = qeth_qdio_activate(card);
2656         if (rc) {
2657                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2658                 goto out_qdio;
2659         }
2660         rc = qeth_dm_act(card);
2661         if (rc) {
2662                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2663                 goto out_qdio;
2664         }
2665 
2666         return 0;
2667 out_qdio:
2668         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2669         qdio_free(CARD_DDEV(card));
2670         return rc;
2671 }
2672 
2673 void qeth_print_status_message(struct qeth_card *card)
2674 {
2675         switch (card->info.type) {
2676         case QETH_CARD_TYPE_OSD:
2677         case QETH_CARD_TYPE_OSM:
2678         case QETH_CARD_TYPE_OSX:
2679                 /* VM will use a non-zero first character
2680                  * to indicate a HiperSockets like reporting
2681                  * of the level OSA sets the first character to zero
2682                  * */
2683                 if (!card->info.mcl_level[0]) {
2684                         sprintf(card->info.mcl_level, "%02x%02x",
2685                                 card->info.mcl_level[2],
2686                                 card->info.mcl_level[3]);
2687 
2688                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2689                         break;
2690                 }
2691                 /* fallthrough */
2692         case QETH_CARD_TYPE_IQD:
2693                 if ((card->info.guestlan) ||
2694                     (card->info.mcl_level[0] & 0x80)) {
2695                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2696                                 card->info.mcl_level[0]];
2697                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2698                                 card->info.mcl_level[1]];
2699                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2700                                 card->info.mcl_level[2]];
2701                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2702                                 card->info.mcl_level[3]];
2703                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2704                 }
2705                 break;
2706         default:
2707                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2708         }
2709         dev_info(&card->gdev->dev,
2710                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2711                  qeth_get_cardname(card),
2712                  (card->info.mcl_level[0]) ? " (level: " : "",
2713                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2714                  (card->info.mcl_level[0]) ? ")" : "",
2715                  qeth_get_cardname_short(card));
2716 }
2717 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2718 
2719 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2720 {
2721         struct qeth_buffer_pool_entry *entry;
2722 
2723         QETH_CARD_TEXT(card, 5, "inwrklst");
2724 
2725         list_for_each_entry(entry,
2726                             &card->qdio.init_pool.entry_list, init_list) {
2727                 qeth_put_buffer_pool_entry(card, entry);
2728         }
2729 }
2730 
2731 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2732                 struct qeth_card *card)
2733 {
2734         struct list_head *plh;
2735         struct qeth_buffer_pool_entry *entry;
2736         int i, free;
2737         struct page *page;
2738 
2739         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2740                 return NULL;
2741 
2742         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2743                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2744                 free = 1;
2745                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2746                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2747                                 free = 0;
2748                                 break;
2749                         }
2750                 }
2751                 if (free) {
2752                         list_del_init(&entry->list);
2753                         return entry;
2754                 }
2755         }
2756 
2757         /* no free buffer in pool so take first one and swap pages */
2758         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2759                         struct qeth_buffer_pool_entry, list);
2760         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2761                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2762                         page = alloc_page(GFP_ATOMIC);
2763                         if (!page) {
2764                                 return NULL;
2765                         } else {
2766                                 free_page((unsigned long)entry->elements[i]);
2767                                 entry->elements[i] = page_address(page);
2768                                 if (card->options.performance_stats)
2769                                         card->perf_stats.sg_alloc_page_rx++;
2770                         }
2771                 }
2772         }
2773         list_del_init(&entry->list);
2774         return entry;
2775 }
2776 
2777 static int qeth_init_input_buffer(struct qeth_card *card,
2778                 struct qeth_qdio_buffer *buf)
2779 {
2780         struct qeth_buffer_pool_entry *pool_entry;
2781         int i;
2782 
2783         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2784                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2785                 if (!buf->rx_skb)
2786                         return 1;
2787         }
2788 
2789         pool_entry = qeth_find_free_buffer_pool_entry(card);
2790         if (!pool_entry)
2791                 return 1;
2792 
2793         /*
2794          * since the buffer is accessed only from the input_tasklet
2795          * there shouldn't be a need to synchronize; also, since we use
2796          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2797          * buffers
2798          */
2799 
2800         buf->pool_entry = pool_entry;
2801         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2802                 buf->buffer->element[i].length = PAGE_SIZE;
2803                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2804                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2805                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2806                 else
2807                         buf->buffer->element[i].eflags = 0;
2808                 buf->buffer->element[i].sflags = 0;
2809         }
2810         return 0;
2811 }
2812 
2813 int qeth_init_qdio_queues(struct qeth_card *card)
2814 {
2815         int i, j;
2816         int rc;
2817 
2818         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2819 
2820         /* inbound queue */
2821         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2822                            QDIO_MAX_BUFFERS_PER_Q);
2823         qeth_initialize_working_pool_list(card);
2824         /*give only as many buffers to hardware as we have buffer pool entries*/
2825         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2826                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2827         card->qdio.in_q->next_buf_to_init =
2828                 card->qdio.in_buf_pool.buf_count - 1;
2829         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2830                      card->qdio.in_buf_pool.buf_count - 1);
2831         if (rc) {
2832                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2833                 return rc;
2834         }
2835 
2836         /* completion */
2837         rc = qeth_cq_init(card);
2838         if (rc) {
2839                 return rc;
2840         }
2841 
2842         /* outbound queue */
2843         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2844                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2845                                    QDIO_MAX_BUFFERS_PER_Q);
2846                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2847                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2848                                         card->qdio.out_qs[i]->bufs[j],
2849                                         QETH_QDIO_BUF_EMPTY);
2850                 }
2851                 card->qdio.out_qs[i]->card = card;
2852                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2853                 card->qdio.out_qs[i]->do_pack = 0;
2854                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2855                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2856                 atomic_set(&card->qdio.out_qs[i]->state,
2857                            QETH_OUT_Q_UNLOCKED);
2858         }
2859         return 0;
2860 }
2861 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2862 
2863 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2864 {
2865         switch (link_type) {
2866         case QETH_LINK_TYPE_HSTR:
2867                 return 2;
2868         default:
2869                 return 1;
2870         }
2871 }
2872 
2873 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2874                 struct qeth_ipa_cmd *cmd, __u8 command,
2875                 enum qeth_prot_versions prot)
2876 {
2877         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2878         cmd->hdr.command = command;
2879         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2880         cmd->hdr.seqno = card->seqno.ipa;
2881         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2882         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2883         if (card->options.layer2)
2884                 cmd->hdr.prim_version_no = 2;
2885         else
2886                 cmd->hdr.prim_version_no = 1;
2887         cmd->hdr.param_count = 1;
2888         cmd->hdr.prot_version = prot;
2889         cmd->hdr.ipa_supported = 0;
2890         cmd->hdr.ipa_enabled = 0;
2891 }
2892 
2893 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2894                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2895 {
2896         struct qeth_cmd_buffer *iob;
2897         struct qeth_ipa_cmd *cmd;
2898 
2899         iob = qeth_get_buffer(&card->write);
2900         if (iob) {
2901                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2902                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2903         } else {
2904                 dev_warn(&card->gdev->dev,
2905                          "The qeth driver ran out of channel command buffers\n");
2906                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2907                                  dev_name(&card->gdev->dev));
2908         }
2909 
2910         return iob;
2911 }
2912 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2913 
2914 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2915                 char prot_type)
2916 {
2917         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2918         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2919         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2920                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2921 }
2922 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2923 
2924 /**
2925  * qeth_send_ipa_cmd() - send an IPA command
2926  *
2927  * See qeth_send_control_data() for explanation of the arguments.
2928  */
2929 
2930 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2931                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2932                         unsigned long),
2933                 void *reply_param)
2934 {
2935         int rc;
2936         char prot_type;
2937 
2938         QETH_CARD_TEXT(card, 4, "sendipa");
2939 
2940         if (card->options.layer2)
2941                 if (card->info.type == QETH_CARD_TYPE_OSN)
2942                         prot_type = QETH_PROT_OSN2;
2943                 else
2944                         prot_type = QETH_PROT_LAYER2;
2945         else
2946                 prot_type = QETH_PROT_TCPIP;
2947         qeth_prepare_ipa_cmd(card, iob, prot_type);
2948         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2949                                                 iob, reply_cb, reply_param);
2950         if (rc == -ETIME) {
2951                 qeth_clear_ipacmd_list(card);
2952                 qeth_schedule_recovery(card);
2953         }
2954         return rc;
2955 }
2956 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2957 
2958 int qeth_send_startlan(struct qeth_card *card)
2959 {
2960         int rc;
2961         struct qeth_cmd_buffer *iob;
2962 
2963         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2964 
2965         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2966         if (!iob)
2967                 return -ENOMEM;
2968         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2969         return rc;
2970 }
2971 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2972 
2973 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2974                 struct qeth_reply *reply, unsigned long data)
2975 {
2976         struct qeth_ipa_cmd *cmd;
2977 
2978         QETH_CARD_TEXT(card, 4, "defadpcb");
2979 
2980         cmd = (struct qeth_ipa_cmd *) data;
2981         if (cmd->hdr.return_code == 0)
2982                 cmd->hdr.return_code =
2983                         cmd->data.setadapterparms.hdr.return_code;
2984         return 0;
2985 }
2986 
2987 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2988                 struct qeth_reply *reply, unsigned long data)
2989 {
2990         struct qeth_ipa_cmd *cmd;
2991 
2992         QETH_CARD_TEXT(card, 3, "quyadpcb");
2993 
2994         cmd = (struct qeth_ipa_cmd *) data;
2995         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2996                 card->info.link_type =
2997                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2998                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2999         }
3000         card->options.adp.supported_funcs =
3001                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3002         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3003 }
3004 
3005 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3006                 __u32 command, __u32 cmdlen)
3007 {
3008         struct qeth_cmd_buffer *iob;
3009         struct qeth_ipa_cmd *cmd;
3010 
3011         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3012                                      QETH_PROT_IPV4);
3013         if (iob) {
3014                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3015                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3016                 cmd->data.setadapterparms.hdr.command_code = command;
3017                 cmd->data.setadapterparms.hdr.used_total = 1;
3018                 cmd->data.setadapterparms.hdr.seq_no = 1;
3019         }
3020 
3021         return iob;
3022 }
3023 
3024 int qeth_query_setadapterparms(struct qeth_card *card)
3025 {
3026         int rc;
3027         struct qeth_cmd_buffer *iob;
3028 
3029         QETH_CARD_TEXT(card, 3, "queryadp");
3030         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3031                                    sizeof(struct qeth_ipacmd_setadpparms));
3032         if (!iob)
3033                 return -ENOMEM;
3034         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3035         return rc;
3036 }
3037 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3038 
3039 static int qeth_query_ipassists_cb(struct qeth_card *card,
3040                 struct qeth_reply *reply, unsigned long data)
3041 {
3042         struct qeth_ipa_cmd *cmd;
3043 
3044         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3045 
3046         cmd = (struct qeth_ipa_cmd *) data;
3047 
3048         switch (cmd->hdr.return_code) {
3049         case IPA_RC_NOTSUPP:
3050         case IPA_RC_L2_UNSUPPORTED_CMD:
3051                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3052                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3053                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3054                 return -0;
3055         default:
3056                 if (cmd->hdr.return_code) {
3057                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3058                                                 "rc=%d\n",
3059                                                 dev_name(&card->gdev->dev),
3060                                                 cmd->hdr.return_code);
3061                         return 0;
3062                 }
3063         }
3064 
3065         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3066                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3067                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3068         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3069                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3070                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3071         } else
3072                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3073                                         "\n", dev_name(&card->gdev->dev));
3074         return 0;
3075 }
3076 
3077 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3078 {
3079         int rc;
3080         struct qeth_cmd_buffer *iob;
3081 
3082         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3083         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3084         if (!iob)
3085                 return -ENOMEM;
3086         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3087         return rc;
3088 }
3089 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3090 
3091 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3092                                 struct qeth_reply *reply, unsigned long data)
3093 {
3094         struct qeth_ipa_cmd *cmd;
3095         struct qeth_switch_info *sw_info;
3096         struct qeth_query_switch_attributes *attrs;
3097 
3098         QETH_CARD_TEXT(card, 2, "qswiatcb");
3099         cmd = (struct qeth_ipa_cmd *) data;
3100         sw_info = (struct qeth_switch_info *)reply->param;
3101         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3102                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3103                 sw_info->capabilities = attrs->capabilities;
3104                 sw_info->settings = attrs->settings;
3105                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3106                                                         sw_info->settings);
3107         }
3108         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3109 
3110         return 0;
3111 }
3112 
3113 int qeth_query_switch_attributes(struct qeth_card *card,
3114                                  struct qeth_switch_info *sw_info)
3115 {
3116         struct qeth_cmd_buffer *iob;
3117 
3118         QETH_CARD_TEXT(card, 2, "qswiattr");
3119         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3120                 return -EOPNOTSUPP;
3121         if (!netif_carrier_ok(card->dev))
3122                 return -ENOMEDIUM;
3123         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3124                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3125         if (!iob)
3126                 return -ENOMEM;
3127         return qeth_send_ipa_cmd(card, iob,
3128                                 qeth_query_switch_attributes_cb, sw_info);
3129 }
3130 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3131 
3132 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3133                 struct qeth_reply *reply, unsigned long data)
3134 {
3135         struct qeth_ipa_cmd *cmd;
3136         __u16 rc;
3137 
3138         cmd = (struct qeth_ipa_cmd *)data;
3139         rc = cmd->hdr.return_code;
3140         if (rc)
3141                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3142         else
3143                 card->info.diagass_support = cmd->data.diagass.ext;
3144         return 0;
3145 }
3146 
3147 static int qeth_query_setdiagass(struct qeth_card *card)
3148 {
3149         struct qeth_cmd_buffer *iob;
3150         struct qeth_ipa_cmd    *cmd;
3151 
3152         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3153         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3154         if (!iob)
3155                 return -ENOMEM;
3156         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3157         cmd->data.diagass.subcmd_len = 16;
3158         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3159         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3160 }
3161 
3162 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3163 {
3164         unsigned long info = get_zeroed_page(GFP_KERNEL);
3165         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3166         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3167         struct ccw_dev_id ccwid;
3168         int level;
3169 
3170         tid->chpid = card->info.chpid;
3171         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3172         tid->ssid = ccwid.ssid;
3173         tid->devno = ccwid.devno;
3174         if (!info)
3175                 return;
3176         level = stsi(NULL, 0, 0, 0);
3177         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3178                 tid->lparnr = info222->lpar_number;
3179         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3180                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3181                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3182         }
3183         free_page(info);
3184         return;
3185 }
3186 
3187 static int qeth_hw_trap_cb(struct qeth_card *card,
3188                 struct qeth_reply *reply, unsigned long data)
3189 {
3190         struct qeth_ipa_cmd *cmd;
3191         __u16 rc;
3192 
3193         cmd = (struct qeth_ipa_cmd *)data;
3194         rc = cmd->hdr.return_code;
3195         if (rc)
3196                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3197         return 0;
3198 }
3199 
3200 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3201 {
3202         struct qeth_cmd_buffer *iob;
3203         struct qeth_ipa_cmd *cmd;
3204 
3205         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3206         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3207         if (!iob)
3208                 return -ENOMEM;
3209         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3210         cmd->data.diagass.subcmd_len = 80;
3211         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3212         cmd->data.diagass.type = 1;
3213         cmd->data.diagass.action = action;
3214         switch (action) {
3215         case QETH_DIAGS_TRAP_ARM:
3216                 cmd->data.diagass.options = 0x0003;
3217                 cmd->data.diagass.ext = 0x00010000 +
3218                         sizeof(struct qeth_trap_id);
3219                 qeth_get_trap_id(card,
3220                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3221                 break;
3222         case QETH_DIAGS_TRAP_DISARM:
3223                 cmd->data.diagass.options = 0x0001;
3224                 break;
3225         case QETH_DIAGS_TRAP_CAPTURE:
3226                 break;
3227         }
3228         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3229 }
3230 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3231 
3232 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3233                 unsigned int qdio_error, const char *dbftext)
3234 {
3235         if (qdio_error) {
3236                 QETH_CARD_TEXT(card, 2, dbftext);
3237                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3238                                buf->element[15].sflags);
3239                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3240                                buf->element[14].sflags);
3241                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3242                 if ((buf->element[15].sflags) == 0x12) {
3243                         card->stats.rx_dropped++;
3244                         return 0;
3245                 } else
3246                         return 1;
3247         }
3248         return 0;
3249 }
3250 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3251 
3252 static void qeth_buffer_reclaim_work(struct work_struct *work)
3253 {
3254         struct qeth_card *card = container_of(work, struct qeth_card,
3255                 buffer_reclaim_work.work);
3256 
3257         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3258         qeth_queue_input_buffer(card, card->reclaim_index);
3259 }
3260 
3261 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3262 {
3263         struct qeth_qdio_q *queue = card->qdio.in_q;
3264         struct list_head *lh;
3265         int count;
3266         int i;
3267         int rc;
3268         int newcount = 0;
3269 
3270         count = (index < queue->next_buf_to_init)?
3271                 card->qdio.in_buf_pool.buf_count -
3272                 (queue->next_buf_to_init - index) :
3273                 card->qdio.in_buf_pool.buf_count -
3274                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3275         /* only requeue at a certain threshold to avoid SIGAs */
3276         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3277                 for (i = queue->next_buf_to_init;
3278                      i < queue->next_buf_to_init + count; ++i) {
3279                         if (qeth_init_input_buffer(card,
3280                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3281                                 break;
3282                         } else {
3283                                 newcount++;
3284                         }
3285                 }
3286 
3287                 if (newcount < count) {
3288                         /* we are in memory shortage so we switch back to
3289                            traditional skb allocation and drop packages */
3290                         atomic_set(&card->force_alloc_skb, 3);
3291                         count = newcount;
3292                 } else {
3293                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3294                 }
3295 
3296                 if (!count) {
3297                         i = 0;
3298                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3299                                 i++;
3300                         if (i == card->qdio.in_buf_pool.buf_count) {
3301                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3302                                 card->reclaim_index = index;
3303                                 schedule_delayed_work(
3304                                         &card->buffer_reclaim_work,
3305                                         QETH_RECLAIM_WORK_TIME);
3306                         }
3307                         return;
3308                 }
3309 
3310                 /*
3311                  * according to old code it should be avoided to requeue all
3312                  * 128 buffers in order to benefit from PCI avoidance.
3313                  * this function keeps at least one buffer (the buffer at
3314                  * 'index') un-requeued -> this buffer is the first buffer that
3315                  * will be requeued the next time
3316                  */
3317                 if (card->options.performance_stats) {
3318                         card->perf_stats.inbound_do_qdio_cnt++;
3319                         card->perf_stats.inbound_do_qdio_start_time =
3320                                 qeth_get_micros();
3321                 }
3322                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3323                              queue->next_buf_to_init, count);
3324                 if (card->options.performance_stats)
3325                         card->perf_stats.inbound_do_qdio_time +=
3326                                 qeth_get_micros() -
3327                                 card->perf_stats.inbound_do_qdio_start_time;
3328                 if (rc) {
3329                         QETH_CARD_TEXT(card, 2, "qinberr");
3330                 }
3331                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3332                                           QDIO_MAX_BUFFERS_PER_Q;
3333         }
3334 }
3335 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3336 
3337 static int qeth_handle_send_error(struct qeth_card *card,
3338                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3339 {
3340         int sbalf15 = buffer->buffer->element[15].sflags;
3341 
3342         QETH_CARD_TEXT(card, 6, "hdsnderr");
3343         if (card->info.type == QETH_CARD_TYPE_IQD) {
3344                 if (sbalf15 == 0) {
3345                         qdio_err = 0;
3346                 } else {
3347                         qdio_err = 1;
3348                 }
3349         }
3350         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3351 
3352         if (!qdio_err)
3353                 return QETH_SEND_ERROR_NONE;
3354 
3355         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3356                 return QETH_SEND_ERROR_RETRY;
3357 
3358         QETH_CARD_TEXT(card, 1, "lnkfail");
3359         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3360                        (u16)qdio_err, (u8)sbalf15);
3361         return QETH_SEND_ERROR_LINK_FAILURE;
3362 }
3363 
3364 /*
3365  * Switched to packing state if the number of used buffers on a queue
3366  * reaches a certain limit.
3367  */
3368 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3369 {
3370         if (!queue->do_pack) {
3371                 if (atomic_read(&queue->used_buffers)
3372                     >= QETH_HIGH_WATERMARK_PACK){
3373                         /* switch non-PACKING -> PACKING */
3374                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3375                         if (queue->card->options.performance_stats)
3376                                 queue->card->perf_stats.sc_dp_p++;
3377                         queue->do_pack = 1;
3378                 }
3379         }
3380 }
3381 
3382 /*
3383  * Switches from packing to non-packing mode. If there is a packing
3384  * buffer on the queue this buffer will be prepared to be flushed.
3385  * In that case 1 is returned to inform the caller. If no buffer
3386  * has to be flushed, zero is returned.
3387  */
3388 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3389 {
3390         struct qeth_qdio_out_buffer *buffer;
3391         int flush_count = 0;
3392 
3393         if (queue->do_pack) {
3394                 if (atomic_read(&queue->used_buffers)
3395                     <= QETH_LOW_WATERMARK_PACK) {
3396                         /* switch PACKING -> non-PACKING */
3397                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3398                         if (queue->card->options.performance_stats)
3399                                 queue->card->perf_stats.sc_p_dp++;
3400                         queue->do_pack = 0;
3401                         /* flush packing buffers */
3402                         buffer = queue->bufs[queue->next_buf_to_fill];
3403                         if ((atomic_read(&buffer->state) ==
3404                                                 QETH_QDIO_BUF_EMPTY) &&
3405                             (buffer->next_element_to_fill > 0)) {
3406                                 atomic_set(&buffer->state,
3407                                            QETH_QDIO_BUF_PRIMED);
3408                                 flush_count++;
3409                                 queue->next_buf_to_fill =
3410                                         (queue->next_buf_to_fill + 1) %
3411                                         QDIO_MAX_BUFFERS_PER_Q;
3412                         }
3413                 }
3414         }
3415         return flush_count;
3416 }
3417 
3418 
3419 /*
3420  * Called to flush a packing buffer if no more pci flags are on the queue.
3421  * Checks if there is a packing buffer and prepares it to be flushed.
3422  * In that case returns 1, otherwise zero.
3423  */
3424 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3425 {
3426         struct qeth_qdio_out_buffer *buffer;
3427 
3428         buffer = queue->bufs[queue->next_buf_to_fill];
3429         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3430            (buffer->next_element_to_fill > 0)) {
3431                 /* it's a packing buffer */
3432                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3433                 queue->next_buf_to_fill =
3434                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3435                 return 1;
3436         }
3437         return 0;
3438 }
3439 
3440 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3441                                int count)
3442 {
3443         struct qeth_qdio_out_buffer *buf;
3444         int rc;
3445         int i;
3446         unsigned int qdio_flags;
3447 
3448         for (i = index; i < index + count; ++i) {
3449                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3450                 buf = queue->bufs[bidx];
3451                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3452                                 SBAL_EFLAGS_LAST_ENTRY;
3453 
3454                 if (queue->bufstates)
3455                         queue->bufstates[bidx].user = buf;
3456 
3457                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3458                         continue;
3459 
3460                 if (!queue->do_pack) {
3461                         if ((atomic_read(&queue->used_buffers) >=
3462                                 (QETH_HIGH_WATERMARK_PACK -
3463                                  QETH_WATERMARK_PACK_FUZZ)) &&
3464                             !atomic_read(&queue->set_pci_flags_count)) {
3465                                 /* it's likely that we'll go to packing
3466                                  * mode soon */
3467                                 atomic_inc(&queue->set_pci_flags_count);
3468                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3469                         }
3470                 } else {
3471                         if (!atomic_read(&queue->set_pci_flags_count)) {
3472                                 /*
3473                                  * there's no outstanding PCI any more, so we
3474                                  * have to request a PCI to be sure the the PCI
3475                                  * will wake at some time in the future then we
3476                                  * can flush packed buffers that might still be
3477                                  * hanging around, which can happen if no
3478                                  * further send was requested by the stack
3479                                  */
3480                                 atomic_inc(&queue->set_pci_flags_count);
3481                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3482                         }
3483                 }
3484         }
3485 
3486         queue->card->dev->trans_start = jiffies;
3487         if (queue->card->options.performance_stats) {
3488                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3489                 queue->card->perf_stats.outbound_do_qdio_start_time =
3490                         qeth_get_micros();
3491         }
3492         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3493         if (atomic_read(&queue->set_pci_flags_count))
3494                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3495         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3496                      queue->queue_no, index, count);
3497         if (queue->card->options.performance_stats)
3498                 queue->card->perf_stats.outbound_do_qdio_time +=
3499                         qeth_get_micros() -
3500                         queue->card->perf_stats.outbound_do_qdio_start_time;
3501         atomic_add(count, &queue->used_buffers);
3502         if (rc) {
3503                 queue->card->stats.tx_errors += count;
3504                 /* ignore temporary SIGA errors without busy condition */
3505                 if (rc == -ENOBUFS)
3506                         return;
3507                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3508                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3509                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3510                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3511                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3512 
3513                 /* this must not happen under normal circumstances. if it
3514                  * happens something is really wrong -> recover */
3515                 qeth_schedule_recovery(queue->card);
3516                 return;
3517         }
3518         if (queue->card->options.performance_stats)
3519                 queue->card->perf_stats.bufs_sent += count;
3520 }
3521 
3522 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3523 {
3524         int index;
3525         int flush_cnt = 0;
3526         int q_was_packing = 0;
3527 
3528         /*
3529          * check if weed have to switch to non-packing mode or if
3530          * we have to get a pci flag out on the queue
3531          */
3532         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3533             !atomic_read(&queue->set_pci_flags_count)) {
3534                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3535                                 QETH_OUT_Q_UNLOCKED) {
3536                         /*
3537                          * If we get in here, there was no action in
3538                          * do_send_packet. So, we check if there is a
3539                          * packing buffer to be flushed here.
3540                          */
3541                         netif_stop_queue(queue->card->dev);
3542                         index = queue->next_buf_to_fill;
3543                         q_was_packing = queue->do_pack;
3544                         /* queue->do_pack may change */
3545                         barrier();
3546                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3547                         if (!flush_cnt &&
3548                             !atomic_read(&queue->set_pci_flags_count))
3549                                 flush_cnt +=
3550                                         qeth_flush_buffers_on_no_pci(queue);
3551                         if (queue->card->options.performance_stats &&
3552                             q_was_packing)
3553                                 queue->card->perf_stats.bufs_sent_pack +=
3554                                         flush_cnt;
3555                         if (flush_cnt)
3556                                 qeth_flush_buffers(queue, index, flush_cnt);
3557                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3558                 }
3559         }
3560 }
3561 
3562 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3563                 unsigned long card_ptr)
3564 {
3565         struct qeth_card *card = (struct qeth_card *)card_ptr;
3566 
3567         if (card->dev && (card->dev->flags & IFF_UP))
3568                 napi_schedule(&card->napi);
3569 }
3570 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3571 
3572 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3573 {
3574         int rc;
3575 
3576         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3577                 rc = -1;
3578                 goto out;
3579         } else {
3580                 if (card->options.cq == cq) {
3581                         rc = 0;
3582                         goto out;
3583                 }
3584 
3585                 if (card->state != CARD_STATE_DOWN &&
3586                     card->state != CARD_STATE_RECOVER) {
3587                         rc = -1;
3588                         goto out;
3589                 }
3590 
3591                 qeth_free_qdio_buffers(card);
3592                 card->options.cq = cq;
3593                 rc = 0;
3594         }
3595 out:
3596         return rc;
3597 
3598 }
3599 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3600 
3601 
3602 static void qeth_qdio_cq_handler(struct qeth_card *card,
3603                 unsigned int qdio_err,
3604                 unsigned int queue, int first_element, int count) {
3605         struct qeth_qdio_q *cq = card->qdio.c_q;
3606         int i;
3607         int rc;
3608 
3609         if (!qeth_is_cq(card, queue))
3610                 goto out;
3611 
3612         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3613         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3614         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3615 
3616         if (qdio_err) {
3617                 netif_stop_queue(card->dev);
3618                 qeth_schedule_recovery(card);
3619                 goto out;
3620         }
3621 
3622         if (card->options.performance_stats) {
3623                 card->perf_stats.cq_cnt++;
3624                 card->perf_stats.cq_start_time = qeth_get_micros();
3625         }
3626 
3627         for (i = first_element; i < first_element + count; ++i) {
3628                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3629                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3630                 int e;
3631 
3632                 e = 0;
3633                 while (buffer->element[e].addr) {
3634                         unsigned long phys_aob_addr;
3635 
3636                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3637                         qeth_qdio_handle_aob(card, phys_aob_addr);
3638                         buffer->element[e].addr = NULL;
3639                         buffer->element[e].eflags = 0;
3640                         buffer->element[e].sflags = 0;
3641                         buffer->element[e].length = 0;
3642 
3643                         ++e;
3644                 }
3645 
3646                 buffer->element[15].eflags = 0;
3647                 buffer->element[15].sflags = 0;
3648         }
3649         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3650                     card->qdio.c_q->next_buf_to_init,
3651                     count);
3652         if (rc) {
3653                 dev_warn(&card->gdev->dev,
3654                         "QDIO reported an error, rc=%i\n", rc);
3655                 QETH_CARD_TEXT(card, 2, "qcqherr");
3656         }
3657         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3658                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3659 
3660         netif_wake_queue(card->dev);
3661 
3662         if (card->options.performance_stats) {
3663                 int delta_t = qeth_get_micros();
3664                 delta_t -= card->perf_stats.cq_start_time;
3665                 card->perf_stats.cq_time += delta_t;
3666         }
3667 out:
3668         return;
3669 }
3670 
3671 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3672                 unsigned int queue, int first_elem, int count,
3673                 unsigned long card_ptr)
3674 {
3675         struct qeth_card *card = (struct qeth_card *)card_ptr;
3676 
3677         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3678         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3679 
3680         if (qeth_is_cq(card, queue))
3681                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3682         else if (qdio_err)
3683                 qeth_schedule_recovery(card);
3684 
3685 
3686 }
3687 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3688 
3689 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3690                 unsigned int qdio_error, int __queue, int first_element,
3691                 int count, unsigned long card_ptr)
3692 {
3693         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3694         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3695         struct qeth_qdio_out_buffer *buffer;
3696         int i;
3697 
3698         QETH_CARD_TEXT(card, 6, "qdouhdl");
3699         if (qdio_error & QDIO_ERROR_FATAL) {
3700                 QETH_CARD_TEXT(card, 2, "achkcond");
3701                 netif_stop_queue(card->dev);
3702                 qeth_schedule_recovery(card);
3703                 return;
3704         }
3705         if (card->options.performance_stats) {
3706                 card->perf_stats.outbound_handler_cnt++;
3707                 card->perf_stats.outbound_handler_start_time =
3708                         qeth_get_micros();
3709         }
3710         for (i = first_element; i < (first_element + count); ++i) {
3711                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3712                 buffer = queue->bufs[bidx];
3713                 qeth_handle_send_error(card, buffer, qdio_error);
3714 
3715                 if (queue->bufstates &&
3716                     (queue->bufstates[bidx].flags &
3717                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3718                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3719 
3720                         if (atomic_cmpxchg(&buffer->state,
3721                                            QETH_QDIO_BUF_PRIMED,
3722                                            QETH_QDIO_BUF_PENDING) ==
3723                                 QETH_QDIO_BUF_PRIMED) {
3724                                 qeth_notify_skbs(queue, buffer,
3725                                                  TX_NOTIFY_PENDING);
3726                         }
3727                         buffer->aob = queue->bufstates[bidx].aob;
3728                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3729                         QETH_CARD_TEXT(queue->card, 5, "aob");
3730                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3731                                         virt_to_phys(buffer->aob));
3732                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3733                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3734                                 qeth_schedule_recovery(card);
3735                         }
3736                 } else {
3737                         if (card->options.cq == QETH_CQ_ENABLED) {
3738                                 enum iucv_tx_notify n;
3739 
3740                                 n = qeth_compute_cq_notification(
3741                                         buffer->buffer->element[15].sflags, 0);
3742                                 qeth_notify_skbs(queue, buffer, n);
3743                         }
3744 
3745                         qeth_clear_output_buffer(queue, buffer,
3746                                                 QETH_QDIO_BUF_EMPTY);
3747                 }
3748                 qeth_cleanup_handled_pending(queue, bidx, 0);
3749         }
3750         atomic_sub(count, &queue->used_buffers);
3751         /* check if we need to do something on this outbound queue */
3752         if (card->info.type != QETH_CARD_TYPE_IQD)
3753                 qeth_check_outbound_queue(queue);
3754 
3755         netif_wake_queue(queue->card->dev);
3756         if (card->options.performance_stats)
3757                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3758                         card->perf_stats.outbound_handler_start_time;
3759 }
3760 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3761 
3762 /**
3763  * Note: Function assumes that we have 4 outbound queues.
3764  */
3765 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3766                         int ipv, int cast_type)
3767 {
3768         __be16 *tci;
3769         u8 tos;
3770 
3771         if (cast_type && card->info.is_multicast_different)
3772                 return card->info.is_multicast_different &
3773                         (card->qdio.no_out_queues - 1);
3774 
3775         switch (card->qdio.do_prio_queueing) {
3776         case QETH_PRIO_Q_ING_TOS:
3777         case QETH_PRIO_Q_ING_PREC:
3778                 switch (ipv) {
3779                 case 4:
3780                         tos = ipv4_get_dsfield(ip_hdr(skb));
3781                         break;
3782                 case 6:
3783                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3784                         break;
3785                 default:
3786                         return card->qdio.default_out_queue;
3787                 }
3788                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3789                         return ~tos >> 6 & 3;
3790                 if (tos & IPTOS_MINCOST)
3791                         return 3;
3792                 if (tos & IPTOS_RELIABILITY)
3793                         return 2;
3794                 if (tos & IPTOS_THROUGHPUT)
3795                         return 1;
3796                 if (tos & IPTOS_LOWDELAY)
3797                         return 0;
3798                 break;
3799         case QETH_PRIO_Q_ING_SKB:
3800                 if (skb->priority > 5)
3801                         return 0;
3802                 return ~skb->priority >> 1 & 3;
3803         case QETH_PRIO_Q_ING_VLAN:
3804                 tci = &((struct ethhdr *)skb->data)->h_proto;
3805                 if (*tci == ETH_P_8021Q)
3806                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3807                 break;
3808         default:
3809                 break;
3810         }
3811         return card->qdio.default_out_queue;
3812 }
3813 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3814 
3815 int qeth_get_elements_for_frags(struct sk_buff *skb)
3816 {
3817         int cnt, length, e, elements = 0;
3818         struct skb_frag_struct *frag;
3819         char *data;
3820 
3821         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3822                 frag = &skb_shinfo(skb)->frags[cnt];
3823                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3824                         frag->page_offset;
3825                 length = frag->size;
3826                 e = PFN_UP((unsigned long)data + length - 1) -
3827                         PFN_DOWN((unsigned long)data);
3828                 elements += e;
3829         }
3830         return elements;
3831 }
3832 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3833 
3834 int qeth_get_elements_no(struct qeth_card *card,
3835                      struct sk_buff *skb, int elems)
3836 {
3837         int dlen = skb->len - skb->data_len;
3838         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3839                 PFN_DOWN((unsigned long)skb->data);
3840 
3841         elements_needed += qeth_get_elements_for_frags(skb);
3842 
3843         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3844                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3845                         "(Number=%d / Length=%d). Discarded.\n",
3846                         (elements_needed+elems), skb->len);
3847                 return 0;
3848         }
3849         return elements_needed;
3850 }
3851 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3852 
3853 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3854 {
3855         int hroom, inpage, rest;
3856 
3857         if (((unsigned long)skb->data & PAGE_MASK) !=
3858             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3859                 hroom = skb_headroom(skb);
3860                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3861                 rest = len - inpage;
3862                 if (rest > hroom)
3863                         return 1;
3864                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3865                 skb->data -= rest;
3866                 skb->tail -= rest;
3867                 *hdr = (struct qeth_hdr *)skb->data;
3868                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3869         }
3870         return 0;
3871 }
3872 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3873 
3874 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3875         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3876         int offset)
3877 {
3878         int length = skb->len - skb->data_len;
3879         int length_here;
3880         int element;
3881         char *data;
3882         int first_lap, cnt;
3883         struct skb_frag_struct *frag;
3884 
3885         element = *next_element_to_fill;
3886         data = skb->data;
3887         first_lap = (is_tso == 0 ? 1 : 0);
3888 
3889         if (offset >= 0) {
3890                 data = skb->data + offset;
3891                 length -= offset;
3892                 first_lap = 0;
3893         }
3894 
3895         while (length > 0) {
3896                 /* length_here is the remaining amount of data in this page */
3897                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3898                 if (length < length_here)
3899                         length_here = length;
3900 
3901                 buffer->element[element].addr = data;
3902                 buffer->element[element].length = length_here;
3903                 length -= length_here;
3904                 if (!length) {
3905                         if (first_lap)
3906                                 if (skb_shinfo(skb)->nr_frags)
3907                                         buffer->element[element].eflags =
3908                                                 SBAL_EFLAGS_FIRST_FRAG;
3909                                 else
3910                                         buffer->element[element].eflags = 0;
3911                         else
3912                                 buffer->element[element].eflags =
3913                                     SBAL_EFLAGS_MIDDLE_FRAG;
3914                 } else {
3915                         if (first_lap)
3916                                 buffer->element[element].eflags =
3917                                     SBAL_EFLAGS_FIRST_FRAG;
3918                         else
3919                                 buffer->element[element].eflags =
3920                                     SBAL_EFLAGS_MIDDLE_FRAG;
3921                 }
3922                 data += length_here;
3923                 element++;
3924                 first_lap = 0;
3925         }
3926 
3927         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3928                 frag = &skb_shinfo(skb)->frags[cnt];
3929                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3930                         frag->page_offset;
3931                 length = frag->size;
3932                 while (length > 0) {
3933                         length_here = PAGE_SIZE -
3934                                 ((unsigned long) data % PAGE_SIZE);
3935                         if (length < length_here)
3936                                 length_here = length;
3937 
3938                         buffer->element[element].addr = data;
3939                         buffer->element[element].length = length_here;
3940                         buffer->element[element].eflags =
3941                                 SBAL_EFLAGS_MIDDLE_FRAG;
3942                         length -= length_here;
3943                         data += length_here;
3944                         element++;
3945                 }
3946         }
3947 
3948         if (buffer->element[element - 1].eflags)
3949                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3950         *next_element_to_fill = element;
3951 }
3952 
3953 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3954                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3955                 struct qeth_hdr *hdr, int offset, int hd_len)
3956 {
3957         struct qdio_buffer *buffer;
3958         int flush_cnt = 0, hdr_len, large_send = 0;
3959 
3960         buffer = buf->buffer;
3961         atomic_inc(&skb->users);
3962         skb_queue_tail(&buf->skb_list, skb);
3963 
3964         /*check first on TSO ....*/
3965         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3966                 int element = buf->next_element_to_fill;
3967 
3968                 hdr_len = sizeof(struct qeth_hdr_tso) +
3969                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3970                 /*fill first buffer entry only with header information */
3971                 buffer->element[element].addr = skb->data;
3972                 buffer->element[element].length = hdr_len;
3973                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3974                 buf->next_element_to_fill++;
3975                 skb->data += hdr_len;
3976                 skb->len  -= hdr_len;
3977                 large_send = 1;
3978         }
3979 
3980         if (offset >= 0) {
3981                 int element = buf->next_element_to_fill;
3982                 buffer->element[element].addr = hdr;
3983                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3984                                                         hd_len;
3985                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3986                 buf->is_header[element] = 1;
3987                 buf->next_element_to_fill++;
3988         }
3989 
3990         __qeth_fill_buffer(skb, buffer, large_send,
3991                 (int *)&buf->next_element_to_fill, offset);
3992 
3993         if (!queue->do_pack) {
3994                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3995                 /* set state to PRIMED -> will be flushed */
3996                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3997                 flush_cnt = 1;
3998         } else {
3999                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4000                 if (queue->card->options.performance_stats)
4001                         queue->card->perf_stats.skbs_sent_pack++;
4002                 if (buf->next_element_to_fill >=
4003                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4004                         /*
4005                          * packed buffer if full -> set state PRIMED
4006                          * -> will be flushed
4007                          */
4008                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4009                         flush_cnt = 1;
4010                 }
4011         }
4012         return flush_cnt;
4013 }
4014 
4015 int qeth_do_send_packet_fast(struct qeth_card *card,
4016                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4017                 struct qeth_hdr *hdr, int elements_needed,
4018                 int offset, int hd_len)
4019 {
4020         struct qeth_qdio_out_buffer *buffer;
4021         int index;
4022 
4023         /* spin until we get the queue ... */
4024         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4025                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4026         /* ... now we've got the queue */
4027         index = queue->next_buf_to_fill;
4028         buffer = queue->bufs[queue->next_buf_to_fill];
4029         /*
4030          * check if buffer is empty to make sure that we do not 'overtake'
4031          * ourselves and try to fill a buffer that is already primed
4032          */
4033         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4034                 goto out;
4035         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4036                                           QDIO_MAX_BUFFERS_PER_Q;
4037         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4038         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4039         qeth_flush_buffers(queue, index, 1);
4040         return 0;
4041 out:
4042         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4043         return -EBUSY;
4044 }
4045 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4046 
4047 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4048                 struct sk_buff *skb, struct qeth_hdr *hdr,
4049                 int elements_needed)
4050 {
4051         struct qeth_qdio_out_buffer *buffer;
4052         int start_index;
4053         int flush_count = 0;
4054         int do_pack = 0;
4055         int tmp;
4056         int rc = 0;
4057 
4058         /* spin until we get the queue ... */
4059         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4060                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4061         start_index = queue->next_buf_to_fill;
4062         buffer = queue->bufs[queue->next_buf_to_fill];
4063         /*
4064          * check if buffer is empty to make sure that we do not 'overtake'
4065          * ourselves and try to fill a buffer that is already primed
4066          */
4067         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4068                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4069                 return -EBUSY;
4070         }
4071         /* check if we need to switch packing state of this queue */
4072         qeth_switch_to_packing_if_needed(queue);
4073         if (queue->do_pack) {
4074                 do_pack = 1;
4075                 /* does packet fit in current buffer? */
4076                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4077                     buffer->next_element_to_fill) < elements_needed) {
4078                         /* ... no -> set state PRIMED */
4079                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4080                         flush_count++;
4081                         queue->next_buf_to_fill =
4082                                 (queue->next_buf_to_fill + 1) %
4083                                 QDIO_MAX_BUFFERS_PER_Q;
4084                         buffer = queue->bufs[queue->next_buf_to_fill];
4085                         /* we did a step forward, so check buffer state
4086                          * again */
4087                         if (atomic_read(&buffer->state) !=
4088                             QETH_QDIO_BUF_EMPTY) {
4089                                 qeth_flush_buffers(queue, start_index,
4090                                                            flush_count);
4091                                 atomic_set(&queue->state,
4092                                                 QETH_OUT_Q_UNLOCKED);
4093                                 return -EBUSY;
4094                         }
4095                 }
4096         }
4097         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4098         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4099                                   QDIO_MAX_BUFFERS_PER_Q;
4100         flush_count += tmp;
4101         if (flush_count)
4102                 qeth_flush_buffers(queue, start_index, flush_count);
4103         else if (!atomic_read(&queue->set_pci_flags_count))
4104                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4105         /*
4106          * queue->state will go from LOCKED -> UNLOCKED or from
4107          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4108          * (switch packing state or flush buffer to get another pci flag out).
4109          * In that case we will enter this loop
4110          */
4111         while (atomic_dec_return(&queue->state)) {
4112                 flush_count = 0;
4113                 start_index = queue->next_buf_to_fill;
4114                 /* check if we can go back to non-packing state */
4115                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4116                 /*
4117                  * check if we need to flush a packing buffer to get a pci
4118                  * flag out on the queue
4119                  */
4120                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4121                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4122                 if (flush_count)
4123                         qeth_flush_buffers(queue, start_index, flush_count);
4124         }
4125         /* at this point the queue is UNLOCKED again */
4126         if (queue->card->options.performance_stats && do_pack)
4127                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4128 
4129         return rc;
4130 }
4131 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4132 
4133 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4134                 struct qeth_reply *reply, unsigned long data)
4135 {
4136         struct qeth_ipa_cmd *cmd;
4137         struct qeth_ipacmd_setadpparms *setparms;
4138 
4139         QETH_CARD_TEXT(card, 4, "prmadpcb");
4140 
4141         cmd = (struct qeth_ipa_cmd *) data;
4142         setparms = &(cmd->data.setadapterparms);
4143 
4144         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4145         if (cmd->hdr.return_code) {
4146                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4147                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4148         }
4149         card->info.promisc_mode = setparms->data.mode;
4150         return 0;
4151 }
4152 
4153 void qeth_setadp_promisc_mode(struct qeth_card *card)
4154 {
4155         enum qeth_ipa_promisc_modes mode;
4156         struct net_device *dev = card->dev;
4157         struct qeth_cmd_buffer *iob;
4158         struct qeth_ipa_cmd *cmd;
4159 
4160         QETH_CARD_TEXT(card, 4, "setprom");
4161 
4162         if (((dev->flags & IFF_PROMISC) &&
4163              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4164             (!(dev->flags & IFF_PROMISC) &&
4165              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4166                 return;
4167         mode = SET_PROMISC_MODE_OFF;
4168         if (dev->flags & IFF_PROMISC)
4169                 mode = SET_PROMISC_MODE_ON;
4170         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4171 
4172         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4173                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4174         if (!iob)
4175                 return;
4176         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4177         cmd->data.setadapterparms.data.mode = mode;
4178         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4179 }
4180 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4181 
4182 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4183 {
4184         struct qeth_card *card;
4185         char dbf_text[15];
4186 
4187         card = dev->ml_priv;
4188 
4189         QETH_CARD_TEXT(card, 4, "chgmtu");
4190         sprintf(dbf_text, "%8x", new_mtu);
4191         QETH_CARD_TEXT(card, 4, dbf_text);
4192 
4193         if (new_mtu < 64)
4194                 return -EINVAL;
4195         if (new_mtu > 65535)
4196                 return -EINVAL;
4197         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4198             (!qeth_mtu_is_valid(card, new_mtu)))
4199                 return -EINVAL;
4200         dev->mtu = new_mtu;
4201         return 0;
4202 }
4203 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4204 
4205 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4206 {
4207         struct qeth_card *card;
4208 
4209         card = dev->ml_priv;
4210 
4211         QETH_CARD_TEXT(card, 5, "getstat");
4212 
4213         return &card->stats;
4214 }
4215 EXPORT_SYMBOL_GPL(qeth_get_stats);
4216 
4217 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4218                 struct qeth_reply *reply, unsigned long data)
4219 {
4220         struct qeth_ipa_cmd *cmd;
4221 
4222         QETH_CARD_TEXT(card, 4, "chgmaccb");
4223 
4224         cmd = (struct qeth_ipa_cmd *) data;
4225         if (!card->options.layer2 ||
4226             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4227                 memcpy(card->dev->dev_addr,
4228                        &cmd->data.setadapterparms.data.change_addr.addr,
4229                        OSA_ADDR_LEN);
4230                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4231         }
4232         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4233         return 0;
4234 }
4235 
4236 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4237 {
4238         int rc;
4239         struct qeth_cmd_buffer *iob;
4240         struct qeth_ipa_cmd *cmd;
4241 
4242         QETH_CARD_TEXT(card, 4, "chgmac");
4243 
4244         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4245                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4246                                    sizeof(struct qeth_change_addr));
4247         if (!iob)
4248                 return -ENOMEM;
4249         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4250         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4251         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4252         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4253                card->dev->dev_addr, OSA_ADDR_LEN);
4254         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4255                                NULL);
4256         return rc;
4257 }
4258 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4259 
4260 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4261                 struct qeth_reply *reply, unsigned long data)
4262 {
4263         struct qeth_ipa_cmd *cmd;
4264         struct qeth_set_access_ctrl *access_ctrl_req;
4265         int fallback = *(int *)reply->param;
4266 
4267         QETH_CARD_TEXT(card, 4, "setaccb");
4268 
4269         cmd = (struct qeth_ipa_cmd *) data;
4270         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4271         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4272         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4273         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4274                 cmd->data.setadapterparms.hdr.return_code);
4275         if (cmd->data.setadapterparms.hdr.return_code !=
4276                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4277                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4278                                 card->gdev->dev.kobj.name,
4279                                 access_ctrl_req->subcmd_code,
4280                                 cmd->data.setadapterparms.hdr.return_code);
4281         switch (cmd->data.setadapterparms.hdr.return_code) {
4282         case SET_ACCESS_CTRL_RC_SUCCESS:
4283                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4284                         dev_info(&card->gdev->dev,
4285                             "QDIO data connection isolation is deactivated\n");
4286                 } else {
4287                         dev_info(&card->gdev->dev,
4288                             "QDIO data connection isolation is activated\n");
4289                 }
4290                 break;
4291         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4292                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4293                                 "deactivated\n", dev_name(&card->gdev->dev));
4294                 if (fallback)
4295                         card->options.isolation = card->options.prev_isolation;
4296                 break;
4297         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4298                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4299                                 " activated\n", dev_name(&card->gdev->dev));
4300                 if (fallback)
4301                         card->options.isolation = card->options.prev_isolation;
4302                 break;
4303         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4304                 dev_err(&card->gdev->dev, "Adapter does not "
4305                         "support QDIO data connection isolation\n");
4306                 break;
4307         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4308                 dev_err(&card->gdev->dev,
4309                         "Adapter is dedicated. "
4310                         "QDIO data connection isolation not supported\n");
4311                 if (fallback)
4312                         card->options.isolation = card->options.prev_isolation;
4313                 break;
4314         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4315                 dev_err(&card->gdev->dev,
4316                         "TSO does not permit QDIO data connection isolation\n");
4317                 if (fallback)
4318                         card->options.isolation = card->options.prev_isolation;
4319                 break;
4320         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4321                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4322                         "support reflective relay mode\n");
4323                 if (fallback)
4324                         card->options.isolation = card->options.prev_isolation;
4325                 break;
4326         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4327                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4328                                         "enabled at the adjacent switch port");
4329                 if (fallback)
4330                         card->options.isolation = card->options.prev_isolation;
4331                 break;
4332         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4333                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4334                                         "at the adjacent switch failed\n");
4335                 break;
4336         default:
4337                 /* this should never happen */
4338                 if (fallback)
4339                         card->options.isolation = card->options.prev_isolation;
4340                 break;
4341         }
4342         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4343         return 0;
4344 }
4345 
4346 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4347                 enum qeth_ipa_isolation_modes isolation, int fallback)
4348 {
4349         int rc;
4350         struct qeth_cmd_buffer *iob;
4351         struct qeth_ipa_cmd *cmd;
4352         struct qeth_set_access_ctrl *access_ctrl_req;
4353 
4354         QETH_CARD_TEXT(card, 4, "setacctl");
4355 
4356         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4357         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4358 
4359         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4360                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4361                                    sizeof(struct qeth_set_access_ctrl));
4362         if (!iob)
4363                 return -ENOMEM;
4364         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4365         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4366         access_ctrl_req->subcmd_code = isolation;
4367 
4368         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4369                                &fallback);
4370         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4371         return rc;
4372 }
4373 
4374 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4375 {
4376         int rc = 0;
4377 
4378         QETH_CARD_TEXT(card, 4, "setactlo");
4379 
4380         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4381              card->info.type == QETH_CARD_TYPE_OSX) &&
4382              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4383                 rc = qeth_setadpparms_set_access_ctrl(card,
4384                         card->options.isolation, fallback);
4385                 if (rc) {
4386                         QETH_DBF_MESSAGE(3,
4387                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4388                                 card->gdev->dev.kobj.name,
4389                                 rc);
4390                         rc = -EOPNOTSUPP;
4391                 }
4392         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4393                 card->options.isolation = ISOLATION_MODE_NONE;
4394 
4395                 dev_err(&card->gdev->dev, "Adapter does not "
4396                         "support QDIO data connection isolation\n");
4397                 rc = -EOPNOTSUPP;
4398         }
4399         return rc;
4400 }
4401 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4402 
4403 void qeth_tx_timeout(struct net_device *dev)
4404 {
4405         struct qeth_card *card;
4406 
4407         card = dev->ml_priv;
4408         QETH_CARD_TEXT(card, 4, "txtimeo");
4409         card->stats.tx_errors++;
4410         qeth_schedule_recovery(card);
4411 }
4412 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4413 
4414 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4415 {
4416         struct qeth_card *card = dev->ml_priv;
4417         int rc = 0;
4418 
4419         switch (regnum) {
4420         case MII_BMCR: /* Basic mode control register */
4421                 rc = BMCR_FULLDPLX;
4422                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4423                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4424                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4425                         rc |= BMCR_SPEED100;
4426                 break;
4427         case MII_BMSR: /* Basic mode status register */
4428                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4429                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4430                      BMSR_100BASE4;
4431                 break;
4432         case MII_PHYSID1: /* PHYS ID 1 */
4433                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4434                      dev->dev_addr[2];
4435                 rc = (rc >> 5) & 0xFFFF;
4436                 break;
4437         case MII_PHYSID2: /* PHYS ID 2 */
4438                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4439                 break;
4440         case MII_ADVERTISE: /* Advertisement control reg */
4441                 rc = ADVERTISE_ALL;
4442                 break;
4443         case MII_LPA: /* Link partner ability reg */
4444                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4445                      LPA_100BASE4 | LPA_LPACK;
4446                 break;
4447         case MII_EXPANSION: /* Expansion register */
4448                 break;
4449         case MII_DCOUNTER: /* disconnect counter */
4450                 break;
4451         case MII_FCSCOUNTER: /* false carrier counter */
4452                 break;
4453         case MII_NWAYTEST: /* N-way auto-neg test register */
4454                 break;
4455         case MII_RERRCOUNTER: /* rx error counter */
4456                 rc = card->stats.rx_errors;
4457                 break;
4458         case MII_SREVISION: /* silicon revision */
4459                 break;
4460         case MII_RESV1: /* reserved 1 */
4461                 break;
4462         case MII_LBRERROR: /* loopback, rx, bypass error */
4463                 break;
4464         case MII_PHYADDR: /* physical address */
4465                 break;
4466         case MII_RESV2: /* reserved 2 */
4467                 break;
4468         case MII_TPISTATUS: /* TPI status for 10mbps */
4469                 break;
4470         case MII_NCONFIG: /* network interface config */
4471                 break;
4472         default:
4473                 break;
4474         }
4475         return rc;
4476 }
4477 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4478 
4479 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4480                 struct qeth_cmd_buffer *iob, int len,
4481                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4482                         unsigned long),
4483                 void *reply_param)
4484 {
4485         u16 s1, s2;
4486 
4487         QETH_CARD_TEXT(card, 4, "sendsnmp");
4488 
4489         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4490         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4491                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4492         /* adjust PDU length fields in IPA_PDU_HEADER */
4493         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4494         s2 = (u32) len;
4495         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4496         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4497         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4498         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4499         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4500                                       reply_cb, reply_param);
4501 }
4502 
4503 static int qeth_snmp_command_cb(struct qeth_card *card,
4504                 struct qeth_reply *reply, unsigned long sdata)
4505 {
4506         struct qeth_ipa_cmd *cmd;
4507         struct qeth_arp_query_info *qinfo;
4508         struct qeth_snmp_cmd *snmp;
4509         unsigned char *data;
4510         __u16 data_len;
4511 
4512         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4513 
4514         cmd = (struct qeth_ipa_cmd *) sdata;
4515         data = (unsigned char *)((char *)cmd - reply->offset);
4516         qinfo = (struct qeth_arp_query_info *) reply->param;
4517         snmp = &cmd->data.setadapterparms.data.snmp;
4518 
4519         if (cmd->hdr.return_code) {
4520                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4521                 return 0;
4522         }
4523         if (cmd->data.setadapterparms.hdr.return_code) {
4524                 cmd->hdr.return_code =
4525                         cmd->data.setadapterparms.hdr.return_code;
4526                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4527                 return 0;
4528         }
4529         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4530         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4531                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4532         else
4533                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4534 
4535         /* check if there is enough room in userspace */
4536         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4537                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4538                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4539                 return 0;
4540         }
4541         QETH_CARD_TEXT_(card, 4, "snore%i",
4542                        cmd->data.setadapterparms.hdr.used_total);
4543         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4544                 cmd->data.setadapterparms.hdr.seq_no);
4545         /*copy entries to user buffer*/
4546         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4547                 memcpy(qinfo->udata + qinfo->udata_offset,
4548                        (char *)snmp,
4549                        data_len + offsetof(struct qeth_snmp_cmd, data));
4550                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4551         } else {
4552                 memcpy(qinfo->udata + qinfo->udata_offset,
4553                        (char *)&snmp->request, data_len);
4554         }
4555         qinfo->udata_offset += data_len;
4556         /* check if all replies received ... */
4557                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4558                                cmd->data.setadapterparms.hdr.used_total);
4559                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4560                                cmd->data.setadapterparms.hdr.seq_no);
4561         if (cmd->data.setadapterparms.hdr.seq_no <
4562             cmd->data.setadapterparms.hdr.used_total)
4563                 return 1;
4564         return 0;
4565 }
4566 
4567 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4568 {
4569         struct qeth_cmd_buffer *iob;
4570         struct qeth_ipa_cmd *cmd;
4571         struct qeth_snmp_ureq *ureq;
4572         unsigned int req_len;
4573         struct qeth_arp_query_info qinfo = {0, };
4574         int rc = 0;
4575 
4576         QETH_CARD_TEXT(card, 3, "snmpcmd");
4577 
4578         if (card->info.guestlan)
4579                 return -EOPNOTSUPP;
4580 
4581         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4582             (!card->options.layer2)) {
4583                 return -EOPNOTSUPP;
4584         }
4585         /* skip 4 bytes (data_len struct member) to get req_len */
4586         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4587                 return -EFAULT;
4588         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4589                        sizeof(struct qeth_ipacmd_hdr) -
4590                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4591                 return -EINVAL;
4592         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4593         if (IS_ERR(ureq)) {
4594                 QETH_CARD_TEXT(card, 2, "snmpnome");
4595                 return PTR_ERR(ureq);
4596         }
4597         qinfo.udata_len = ureq->hdr.data_len;
4598         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4599         if (!qinfo.udata) {
4600                 kfree(ureq);
4601                 return -ENOMEM;
4602         }
4603         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4604 
4605         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4606                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4607         if (!iob) {
4608                 rc = -ENOMEM;
4609                 goto out;
4610         }
4611         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4612         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4613         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4614                                     qeth_snmp_command_cb, (void *)&qinfo);
4615         if (rc)
4616                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4617                            QETH_CARD_IFNAME(card), rc);
4618         else {
4619                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4620                         rc = -EFAULT;
4621         }
4622 out:
4623         kfree(ureq);
4624         kfree(qinfo.udata);
4625         return rc;
4626 }
4627 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4628 
4629 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4630                 struct qeth_reply *reply, unsigned long data)
4631 {
4632         struct qeth_ipa_cmd *cmd;
4633         struct qeth_qoat_priv *priv;
4634         char *resdata;
4635         int resdatalen;
4636 
4637         QETH_CARD_TEXT(card, 3, "qoatcb");
4638 
4639         cmd = (struct qeth_ipa_cmd *)data;
4640         priv = (struct qeth_qoat_priv *)reply->param;
4641         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4642         resdata = (char *)data + 28;
4643 
4644         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4645                 cmd->hdr.return_code = IPA_RC_FFFF;
4646                 return 0;
4647         }
4648 
4649         memcpy((priv->buffer + priv->response_len), resdata,
4650                 resdatalen);
4651         priv->response_len += resdatalen;
4652 
4653         if (cmd->data.setadapterparms.hdr.seq_no <
4654             cmd->data.setadapterparms.hdr.used_total)
4655                 return 1;
4656         return 0;
4657 }
4658 
4659 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4660 {
4661         int rc = 0;
4662         struct qeth_cmd_buffer *iob;
4663         struct qeth_ipa_cmd *cmd;
4664         struct qeth_query_oat *oat_req;
4665         struct qeth_query_oat_data oat_data;
4666         struct qeth_qoat_priv priv;
4667         void __user *tmp;
4668 
4669         QETH_CARD_TEXT(card, 3, "qoatcmd");
4670 
4671         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4672                 rc = -EOPNOTSUPP;
4673                 goto out;
4674         }
4675 
4676         if (copy_from_user(&oat_data, udata,
4677             sizeof(struct qeth_query_oat_data))) {
4678                         rc = -EFAULT;
4679                         goto out;
4680         }
4681 
4682         priv.buffer_len = oat_data.buffer_len;
4683         priv.response_len = 0;
4684         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4685         if (!priv.buffer) {
4686                 rc = -ENOMEM;
4687                 goto out;
4688         }
4689 
4690         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4691                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4692                                    sizeof(struct qeth_query_oat));
4693         if (!iob) {
4694                 rc = -ENOMEM;
4695                 goto out_free;
4696         }
4697         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4698         oat_req = &cmd->data.setadapterparms.data.query_oat;
4699         oat_req->subcmd_code = oat_data.command;
4700 
4701         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4702                                &priv);
4703         if (!rc) {
4704                 if (is_compat_task())
4705                         tmp = compat_ptr(oat_data.ptr);
4706                 else
4707                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4708 
4709                 if (copy_to_user(tmp, priv.buffer,
4710                     priv.response_len)) {
4711                         rc = -EFAULT;
4712                         goto out_free;
4713                 }
4714 
4715                 oat_data.response_len = priv.response_len;
4716 
4717                 if (copy_to_user(udata, &oat_data,
4718                     sizeof(struct qeth_query_oat_data)))
4719                         rc = -EFAULT;
4720         } else
4721                 if (rc == IPA_RC_FFFF)
4722                         rc = -EFAULT;
4723 
4724 out_free:
4725         kfree(priv.buffer);
4726 out:
4727         return rc;
4728 }
4729 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4730 
4731 static int qeth_query_card_info_cb(struct qeth_card *card,
4732                                    struct qeth_reply *reply, unsigned long data)
4733 {
4734         struct qeth_ipa_cmd *cmd;
4735         struct qeth_query_card_info *card_info;
4736         struct carrier_info *carrier_info;
4737 
4738         QETH_CARD_TEXT(card, 2, "qcrdincb");
4739         carrier_info = (struct carrier_info *)reply->param;
4740         cmd = (struct qeth_ipa_cmd *)data;
4741         card_info = &cmd->data.setadapterparms.data.card_info;
4742         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4743                 carrier_info->card_type = card_info->card_type;
4744                 carrier_info->port_mode = card_info->port_mode;
4745                 carrier_info->port_speed = card_info->port_speed;
4746         }
4747 
4748         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4749         return 0;
4750 }
4751 
4752 static int qeth_query_card_info(struct qeth_card *card,
4753                                 struct carrier_info *carrier_info)
4754 {
4755         struct qeth_cmd_buffer *iob;
4756 
4757         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4758         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4759                 return -EOPNOTSUPP;
4760         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4761                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4762         if (!iob)
4763                 return -ENOMEM;
4764         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4765                                         (void *)carrier_info);
4766 }
4767 
4768 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4769 {
4770         switch (card->info.type) {
4771         case QETH_CARD_TYPE_IQD:
4772                 return 2;
4773         default:
4774                 return 0;
4775         }
4776 }
4777 
4778 static void qeth_determine_capabilities(struct qeth_card *card)
4779 {
4780         int rc;
4781         int length;
4782         char *prcd;
4783         struct ccw_device *ddev;
4784         int ddev_offline = 0;
4785 
4786         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4787         ddev = CARD_DDEV(card);
4788         if (!ddev->online) {
4789                 ddev_offline = 1;
4790                 rc = ccw_device_set_online(ddev);
4791                 if (rc) {
4792                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4793                         goto out;
4794                 }
4795         }
4796 
4797         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4798         if (rc) {
4799                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4800                         dev_name(&card->gdev->dev), rc);
4801                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4802                 goto out_offline;
4803         }
4804         qeth_configure_unitaddr(card, prcd);
4805         if (ddev_offline)
4806                 qeth_configure_blkt_default(card, prcd);
4807         kfree(prcd);
4808 
4809         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4810         if (rc)
4811                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4812 
4813         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4814         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4815         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4816         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4817         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4818             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4819             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4820                 dev_info(&card->gdev->dev,
4821                         "Completion Queueing supported\n");
4822         } else {
4823                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4824         }
4825 
4826 
4827 out_offline:
4828         if (ddev_offline == 1)
4829                 ccw_device_set_offline(ddev);
4830 out:
4831         return;
4832 }
4833 
4834 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4835         struct qdio_buffer **in_sbal_ptrs,
4836         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4837         int i;
4838 
4839         if (card->options.cq == QETH_CQ_ENABLED) {
4840                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4841                              (card->qdio.no_in_queues - 1);
4842                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4843                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4844                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4845                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4846                 }
4847 
4848                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4849         }
4850 }
4851 
4852 static int qeth_qdio_establish(struct qeth_card *card)
4853 {
4854         struct qdio_initialize init_data;
4855         char *qib_param_field;
4856         struct qdio_buffer **in_sbal_ptrs;
4857         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4858         struct qdio_buffer **out_sbal_ptrs;
4859         int i, j, k;
4860         int rc = 0;
4861 
4862         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4863 
4864         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4865                               GFP_KERNEL);
4866         if (!qib_param_field) {
4867                 rc =  -ENOMEM;
4868                 goto out_free_nothing;
4869         }
4870 
4871         qeth_create_qib_param_field(card, qib_param_field);
4872         qeth_create_qib_param_field_blkt(card, qib_param_field);
4873 
4874         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4875                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4876                                GFP_KERNEL);
4877         if (!in_sbal_ptrs) {
4878                 rc = -ENOMEM;
4879                 goto out_free_qib_param;
4880         }
4881         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4882                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4883                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4884         }
4885 
4886         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4887                                    GFP_KERNEL);
4888         if (!queue_start_poll) {
4889                 rc = -ENOMEM;
4890                 goto out_free_in_sbals;
4891         }
4892         for (i = 0; i < card->qdio.no_in_queues; ++i)
4893                 queue_start_poll[i] = card->discipline->start_poll;
4894 
4895         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4896 
4897         out_sbal_ptrs =
4898                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4899                         sizeof(void *), GFP_KERNEL);
4900         if (!out_sbal_ptrs) {
4901                 rc = -ENOMEM;
4902                 goto out_free_queue_start_poll;
4903         }
4904         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4905                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4906                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4907                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4908                 }
4909 
4910         memset(&init_data, 0, sizeof(struct qdio_initialize));
4911         init_data.cdev                   = CARD_DDEV(card);
4912         init_data.q_format               = qeth_get_qdio_q_format(card);
4913         init_data.qib_param_field_format = 0;
4914         init_data.qib_param_field        = qib_param_field;
4915         init_data.no_input_qs            = card->qdio.no_in_queues;
4916         init_data.no_output_qs           = card->qdio.no_out_queues;
4917         init_data.input_handler          = card->discipline->input_handler;
4918         init_data.output_handler         = card->discipline->output_handler;
4919         init_data.queue_start_poll_array = queue_start_poll;
4920         init_data.int_parm               = (unsigned long) card;
4921         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4922         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4923         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4924         init_data.scan_threshold =
4925                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4926 
4927         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4928                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4929                 rc = qdio_allocate(&init_data);
4930                 if (rc) {
4931                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4932                         goto out;
4933                 }
4934                 rc = qdio_establish(&init_data);
4935                 if (rc) {
4936                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4937                         qdio_free(CARD_DDEV(card));
4938                 }
4939         }
4940 
4941         switch (card->options.cq) {
4942         case QETH_CQ_ENABLED:
4943                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4944                 break;
4945         case QETH_CQ_DISABLED:
4946                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4947                 break;
4948         default:
4949                 break;
4950         }
4951 out:
4952         kfree(out_sbal_ptrs);
4953 out_free_queue_start_poll:
4954         kfree(queue_start_poll);
4955 out_free_in_sbals:
4956         kfree(in_sbal_ptrs);
4957 out_free_qib_param:
4958         kfree(qib_param_field);
4959 out_free_nothing:
4960         return rc;
4961 }
4962 
4963 static void qeth_core_free_card(struct qeth_card *card)
4964 {
4965 
4966         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4967         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4968         qeth_clean_channel(&card->read);
4969         qeth_clean_channel(&card->write);
4970         if (card->dev)
4971                 free_netdev(card->dev);
4972         kfree(card->ip_tbd_list);
4973         qeth_free_qdio_buffers(card);
4974         unregister_service_level(&card->qeth_service_level);
4975         kfree(card);
4976 }
4977 
4978 void qeth_trace_features(struct qeth_card *card)
4979 {
4980         QETH_CARD_TEXT(card, 2, "features");
4981         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4982         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4983         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4984         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4985                       sizeof(card->info.diagass_support));
4986 }
4987 EXPORT_SYMBOL_GPL(qeth_trace_features);
4988 
4989 static struct ccw_device_id qeth_ids[] = {
4990         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4991                                         .driver_info = QETH_CARD_TYPE_OSD},
4992         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4993                                         .driver_info = QETH_CARD_TYPE_IQD},
4994         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4995                                         .driver_info = QETH_CARD_TYPE_OSN},
4996         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4997                                         .driver_info = QETH_CARD_TYPE_OSM},
4998         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4999                                         .driver_info = QETH_CARD_TYPE_OSX},
5000         {},
5001 };
5002 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5003 
5004 static struct ccw_driver qeth_ccw_driver = {
5005         .driver = {
5006                 .owner = THIS_MODULE,
5007                 .name = "qeth",
5008         },
5009         .ids = qeth_ids,
5010         .probe = ccwgroup_probe_ccwdev,
5011         .remove = ccwgroup_remove_ccwdev,
5012 };
5013 
5014 int qeth_core_hardsetup_card(struct qeth_card *card)
5015 {
5016         int retries = 3;
5017         int rc;
5018 
5019         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5020         atomic_set(&card->force_alloc_skb, 0);
5021         qeth_update_from_chp_desc(card);
5022 retry:
5023         if (retries < 3)
5024                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5025                         dev_name(&card->gdev->dev));
5026         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5027         ccw_device_set_offline(CARD_DDEV(card));
5028         ccw_device_set_offline(CARD_WDEV(card));
5029         ccw_device_set_offline(CARD_RDEV(card));
5030         qdio_free(CARD_DDEV(card));
5031         rc = ccw_device_set_online(CARD_RDEV(card));
5032         if (rc)
5033                 goto retriable;
5034         rc = ccw_device_set_online(CARD_WDEV(card));
5035         if (rc)
5036                 goto retriable;
5037         rc = ccw_device_set_online(CARD_DDEV(card));
5038         if (rc)
5039                 goto retriable;
5040 retriable:
5041         if (rc == -ERESTARTSYS) {
5042                 QETH_DBF_TEXT(SETUP, 2, "break1");
5043                 return rc;
5044         } else if (rc) {
5045                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5046                 if (--retries < 0)
5047                         goto out;
5048                 else
5049                         goto retry;
5050         }
5051         qeth_determine_capabilities(card);
5052         qeth_init_tokens(card);
5053         qeth_init_func_level(card);
5054         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5055         if (rc == -ERESTARTSYS) {
5056                 QETH_DBF_TEXT(SETUP, 2, "break2");
5057                 return rc;
5058         } else if (rc) {
5059                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5060                 if (--retries < 0)
5061                         goto out;
5062                 else
5063                         goto retry;
5064         }
5065         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5066         if (rc == -ERESTARTSYS) {
5067                 QETH_DBF_TEXT(SETUP, 2, "break3");
5068                 return rc;
5069         } else if (rc) {
5070                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5071                 if (--retries < 0)
5072                         goto out;
5073                 else
5074                         goto retry;
5075         }
5076         card->read_or_write_problem = 0;
5077         rc = qeth_mpc_initialize(card);
5078         if (rc) {
5079                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5080                 goto out;
5081         }
5082 
5083         card->options.ipa4.supported_funcs = 0;
5084         card->options.ipa6.supported_funcs = 0;
5085         card->options.adp.supported_funcs = 0;
5086         card->options.sbp.supported_funcs = 0;
5087         card->info.diagass_support = 0;
5088         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5089         if (rc == -ENOMEM)
5090                 goto out;
5091         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5092                 rc = qeth_query_setadapterparms(card);
5093                 if (rc < 0) {
5094                         QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5095                         goto out;
5096                 }
5097         }
5098         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5099                 rc = qeth_query_setdiagass(card);
5100                 if (rc < 0) {
5101                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5102                         goto out;
5103                 }
5104         }
5105         return 0;
5106 out:
5107         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5108                 "an error on the device\n");
5109         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5110                 dev_name(&card->gdev->dev), rc);
5111         return rc;
5112 }
5113 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5114 
5115 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5116                 struct qdio_buffer_element *element,
5117                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5118 {
5119         struct page *page = virt_to_page(element->addr);
5120         if (*pskb == NULL) {
5121                 if (qethbuffer->rx_skb) {
5122                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5123                         *pskb = qethbuffer->rx_skb;
5124                         qethbuffer->rx_skb = NULL;
5125                 } else {
5126                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5127                         if (!(*pskb))
5128                                 return -ENOMEM;
5129                 }
5130 
5131                 skb_reserve(*pskb, ETH_HLEN);
5132                 if (data_len <= QETH_RX_PULL_LEN) {
5133                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5134                                 data_len);
5135                 } else {
5136                         get_page(page);
5137                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5138                                element->addr + offset, QETH_RX_PULL_LEN);
5139                         skb_fill_page_desc(*pskb, *pfrag, page,
5140                                 offset + QETH_RX_PULL_LEN,
5141                                 data_len - QETH_RX_PULL_LEN);
5142                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5143                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5144                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5145                         (*pfrag)++;
5146                 }
5147         } else {
5148                 get_page(page);
5149                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5150                 (*pskb)->data_len += data_len;
5151                 (*pskb)->len      += data_len;
5152                 (*pskb)->truesize += data_len;
5153                 (*pfrag)++;
5154         }
5155 
5156 
5157         return 0;
5158 }
5159 
5160 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5161 {
5162         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5163 }
5164 
5165 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5166                 struct qeth_qdio_buffer *qethbuffer,
5167                 struct qdio_buffer_element **__element, int *__offset,
5168                 struct qeth_hdr **hdr)
5169 {
5170         struct qdio_buffer_element *element = *__element;
5171         struct qdio_buffer *buffer = qethbuffer->buffer;
5172         int offset = *__offset;
5173         struct sk_buff *skb = NULL;
5174         int skb_len = 0;
5175         void *data_ptr;
5176         int data_len;
5177         int headroom = 0;
5178         int use_rx_sg = 0;
5179         int frag = 0;
5180 
5181         /* qeth_hdr must not cross element boundaries */
5182         if (element->length < offset + sizeof(struct qeth_hdr)) {
5183                 if (qeth_is_last_sbale(element))
5184                         return NULL;
5185                 element++;
5186                 offset = 0;
5187                 if (element->length < sizeof(struct qeth_hdr))
5188                         return NULL;
5189         }
5190         *hdr = element->addr + offset;
5191 
5192         offset += sizeof(struct qeth_hdr);
5193         switch ((*hdr)->hdr.l2.id) {
5194         case QETH_HEADER_TYPE_LAYER2:
5195                 skb_len = (*hdr)->hdr.l2.pkt_length;
5196                 break;
5197         case QETH_HEADER_TYPE_LAYER3:
5198                 skb_len = (*hdr)->hdr.l3.length;
5199                 headroom = ETH_HLEN;
5200                 break;
5201         case QETH_HEADER_TYPE_OSN:
5202                 skb_len = (*hdr)->hdr.osn.pdu_length;
5203                 headroom = sizeof(struct qeth_hdr);
5204                 break;
5205         default:
5206                 break;
5207         }
5208 
5209         if (!skb_len)
5210                 return NULL;
5211 
5212         if (((skb_len >= card->options.rx_sg_cb) &&
5213              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5214              (!atomic_read(&card->force_alloc_skb))) ||
5215             (card->options.cq == QETH_CQ_ENABLED)) {
5216                 use_rx_sg = 1;
5217         } else {
5218                 skb = dev_alloc_skb(skb_len + headroom);
5219                 if (!skb)
5220                         goto no_mem;
5221                 if (headroom)
5222                         skb_reserve(skb, headroom);
5223         }
5224 
5225         data_ptr = element->addr + offset;
5226         while (skb_len) {
5227                 data_len = min(skb_len, (int)(element->length - offset));
5228                 if (data_len) {
5229                         if (use_rx_sg) {
5230                                 if (qeth_create_skb_frag(qethbuffer, element,
5231                                     &skb, offset, &frag, data_len))
5232                                         goto no_mem;
5233                         } else {
5234                                 memcpy(skb_put(skb, data_len), data_ptr,
5235                                         data_len);
5236                         }
5237                 }
5238                 skb_len -= data_len;
5239                 if (skb_len) {
5240                         if (qeth_is_last_sbale(element)) {
5241                                 QETH_CARD_TEXT(card, 4, "unexeob");
5242                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5243                                 dev_kfree_skb_any(skb);
5244                                 card->stats.rx_errors++;
5245                                 return NULL;
5246                         }
5247                         element++;
5248                         offset = 0;
5249                         data_ptr = element->addr;
5250                 } else {
5251                         offset += data_len;
5252                 }
5253         }
5254         *__element = element;
5255         *__offset = offset;
5256         if (use_rx_sg && card->options.performance_stats) {
5257                 card->perf_stats.sg_skbs_rx++;
5258                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5259         }
5260         return skb;
5261 no_mem:
5262         if (net_ratelimit()) {
5263                 QETH_CARD_TEXT(card, 2, "noskbmem");
5264         }
5265         card->stats.rx_dropped++;
5266         return NULL;
5267 }
5268 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5269 
5270 static int qeth_setassparms_cb(struct qeth_card *card,
5271                                struct qeth_reply *reply, unsigned long data)
5272 {
5273         struct qeth_ipa_cmd *cmd;
5274 
5275         QETH_CARD_TEXT(card, 4, "defadpcb");
5276 
5277         cmd = (struct qeth_ipa_cmd *) data;
5278         if (cmd->hdr.return_code == 0) {
5279                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5280                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5281                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5282                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5283                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5284         }
5285         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
5286             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5287                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
5288                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
5289         }
5290         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
5291             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5292                 card->info.tx_csum_mask =
5293                         cmd->data.setassparms.data.flags_32bit;
5294                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
5295         }
5296 
5297         return 0;
5298 }
5299 
5300 static struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5301                                                   enum qeth_ipa_funcs ipa_func,
5302                                                   __u16 cmd_code, __u16 len,
5303                                                   enum qeth_prot_versions prot)
5304 {
5305         struct qeth_cmd_buffer *iob;
5306         struct qeth_ipa_cmd *cmd;
5307 
5308         QETH_CARD_TEXT(card, 4, "getasscm");
5309         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5310 
5311         if (iob) {
5312                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5313                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5314                 cmd->data.setassparms.hdr.length = 8 + len;
5315                 cmd->data.setassparms.hdr.command_code = cmd_code;
5316                 cmd->data.setassparms.hdr.return_code = 0;
5317                 cmd->data.setassparms.hdr.seq_no = 0;
5318         }
5319 
5320         return iob;
5321 }
5322 
5323 int qeth_send_setassparms(struct qeth_card *card,
5324                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5325                           int (*reply_cb)(struct qeth_card *,
5326                                           struct qeth_reply *, unsigned long),
5327                           void *reply_param)
5328 {
5329         int rc;
5330         struct qeth_ipa_cmd *cmd;
5331 
5332         QETH_CARD_TEXT(card, 4, "sendassp");
5333 
5334         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5335         if (len <= sizeof(__u32))
5336                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5337         else   /* (len > sizeof(__u32)) */
5338                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5339 
5340         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5341         return rc;
5342 }
5343 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5344 
5345 int qeth_send_simple_setassparms(struct qeth_card *card,
5346                                  enum qeth_ipa_funcs ipa_func,
5347                                  __u16 cmd_code, long data)
5348 {
5349         int rc;
5350         int length = 0;
5351         struct qeth_cmd_buffer *iob;
5352 
5353         QETH_CARD_TEXT(card, 4, "simassp4");
5354         if (data)
5355                 length = sizeof(__u32);
5356         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5357                                        length, QETH_PROT_IPV4);
5358         if (!iob)
5359                 return -ENOMEM;
5360         rc = qeth_send_setassparms(card, iob, length, data,
5361                                    qeth_setassparms_cb, NULL);
5362         return rc;
5363 }
5364 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5365 
5366 static void qeth_unregister_dbf_views(void)
5367 {
5368         int x;
5369         for (x = 0; x < QETH_DBF_INFOS; x++) {
5370                 debug_unregister(qeth_dbf[x].id);
5371                 qeth_dbf[x].id = NULL;
5372         }
5373 }
5374 
5375 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5376 {
5377         char dbf_txt_buf[32];
5378         va_list args;
5379 
5380         if (!debug_level_enabled(id, level))
5381                 return;
5382         va_start(args, fmt);
5383         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5384         va_end(args);
5385         debug_text_event(id, level, dbf_txt_buf);
5386 }
5387 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5388 
5389 static int qeth_register_dbf_views(void)
5390 {
5391         int ret;
5392         int x;
5393 
5394         for (x = 0; x < QETH_DBF_INFOS; x++) {
5395                 /* register the areas */
5396                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5397                                                 qeth_dbf[x].pages,
5398                                                 qeth_dbf[x].areas,
5399                                                 qeth_dbf[x].len);
5400                 if (qeth_dbf[x].id == NULL) {
5401                         qeth_unregister_dbf_views();
5402                         return -ENOMEM;
5403                 }
5404 
5405                 /* register a view */
5406                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5407                 if (ret) {
5408                         qeth_unregister_dbf_views();
5409                         return ret;
5410                 }
5411 
5412                 /* set a passing level */
5413                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5414         }
5415 
5416         return 0;
5417 }
5418 
5419 int qeth_core_load_discipline(struct qeth_card *card,
5420                 enum qeth_discipline_id discipline)
5421 {
5422         int rc = 0;
5423         mutex_lock(&qeth_mod_mutex);
5424         switch (discipline) {
5425         case QETH_DISCIPLINE_LAYER3:
5426                 card->discipline = try_then_request_module(
5427                         symbol_get(qeth_l3_discipline), "qeth_l3");
5428                 break;
5429         case QETH_DISCIPLINE_LAYER2:
5430                 card->discipline = try_then_request_module(
5431                         symbol_get(qeth_l2_discipline), "qeth_l2");
5432                 break;
5433         }
5434         if (!card->discipline) {
5435                 dev_err(&card->gdev->dev, "There is no kernel module to "
5436                         "support discipline %d\n", discipline);
5437                 rc = -EINVAL;
5438         }
5439         mutex_unlock(&qeth_mod_mutex);
5440         return rc;
5441 }
5442 
5443 void qeth_core_free_discipline(struct qeth_card *card)
5444 {
5445         if (card->options.layer2)
5446                 symbol_put(qeth_l2_discipline);
5447         else
5448                 symbol_put(qeth_l3_discipline);
5449         card->discipline = NULL;
5450 }
5451 
5452 static const struct device_type qeth_generic_devtype = {
5453         .name = "qeth_generic",
5454         .groups = qeth_generic_attr_groups,
5455 };
5456 static const struct device_type qeth_osn_devtype = {
5457         .name = "qeth_osn",
5458         .groups = qeth_osn_attr_groups,
5459 };
5460 
5461 #define DBF_NAME_LEN    20
5462 
5463 struct qeth_dbf_entry {
5464         char dbf_name[DBF_NAME_LEN];
5465         debug_info_t *dbf_info;
5466         struct list_head dbf_list;
5467 };
5468 
5469 static LIST_HEAD(qeth_dbf_list);
5470 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5471 
5472 static debug_info_t *qeth_get_dbf_entry(char *name)
5473 {
5474         struct qeth_dbf_entry *entry;
5475         debug_info_t *rc = NULL;
5476 
5477         mutex_lock(&qeth_dbf_list_mutex);
5478         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5479                 if (strcmp(entry->dbf_name, name) == 0) {
5480                         rc = entry->dbf_info;
5481                         break;
5482                 }
5483         }
5484         mutex_unlock(&qeth_dbf_list_mutex);
5485         return rc;
5486 }
5487 
5488 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5489 {
5490         struct qeth_dbf_entry *new_entry;
5491 
5492         card->debug = debug_register(name, 2, 1, 8);
5493         if (!card->debug) {
5494                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5495                 goto err;
5496         }
5497         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5498                 goto err_dbg;
5499         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5500         if (!new_entry)
5501                 goto err_dbg;
5502         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5503         new_entry->dbf_info = card->debug;
5504         mutex_lock(&qeth_dbf_list_mutex);
5505         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5506         mutex_unlock(&qeth_dbf_list_mutex);
5507 
5508         return 0;
5509 
5510 err_dbg:
5511         debug_unregister(card->debug);
5512 err:
5513         return -ENOMEM;
5514 }
5515 
5516 static void qeth_clear_dbf_list(void)
5517 {
5518         struct qeth_dbf_entry *entry, *tmp;
5519 
5520         mutex_lock(&qeth_dbf_list_mutex);
5521         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5522                 list_del(&entry->dbf_list);
5523                 debug_unregister(entry->dbf_info);
5524                 kfree(entry);
5525         }
5526         mutex_unlock(&qeth_dbf_list_mutex);
5527 }
5528 
5529 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5530 {
5531         struct qeth_card *card;
5532         struct device *dev;
5533         int rc;
5534         unsigned long flags;
5535         char dbf_name[DBF_NAME_LEN];
5536 
5537         QETH_DBF_TEXT(SETUP, 2, "probedev");
5538 
5539         dev = &gdev->dev;
5540         if (!get_device(dev))
5541                 return -ENODEV;
5542 
5543         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5544 
5545         card = qeth_alloc_card();
5546         if (!card) {
5547                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5548                 rc = -ENOMEM;
5549                 goto err_dev;
5550         }
5551 
5552         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5553                 dev_name(&gdev->dev));
5554         card->debug = qeth_get_dbf_entry(dbf_name);
5555         if (!card->debug) {
5556                 rc = qeth_add_dbf_entry(card, dbf_name);
5557                 if (rc)
5558                         goto err_card;
5559         }
5560 
5561         card->read.ccwdev  = gdev->cdev[0];
5562         card->write.ccwdev = gdev->cdev[1];
5563         card->data.ccwdev  = gdev->cdev[2];
5564         dev_set_drvdata(&gdev->dev, card);
5565         card->gdev = gdev;
5566         gdev->cdev[0]->handler = qeth_irq;
5567         gdev->cdev[1]->handler = qeth_irq;
5568         gdev->cdev[2]->handler = qeth_irq;
5569 
5570         rc = qeth_determine_card_type(card);
5571         if (rc) {
5572                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5573                 goto err_card;
5574         }
5575         rc = qeth_setup_card(card);
5576         if (rc) {
5577                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5578                 goto err_card;
5579         }
5580 
5581         if (card->info.type == QETH_CARD_TYPE_OSN)
5582                 gdev->dev.type = &qeth_osn_devtype;
5583         else
5584                 gdev->dev.type = &qeth_generic_devtype;
5585 
5586         switch (card->info.type) {
5587         case QETH_CARD_TYPE_OSN:
5588         case QETH_CARD_TYPE_OSM:
5589                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5590                 if (rc)
5591                         goto err_card;
5592                 rc = card->discipline->setup(card->gdev);
5593                 if (rc)
5594                         goto err_disc;
5595         case QETH_CARD_TYPE_OSD:
5596         case QETH_CARD_TYPE_OSX:
5597         default:
5598                 break;
5599         }
5600 
5601         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5602         list_add_tail(&card->list, &qeth_core_card_list.list);
5603         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5604 
5605         qeth_determine_capabilities(card);
5606         return 0;
5607 
5608 err_disc:
5609         qeth_core_free_discipline(card);
5610 err_card:
5611         qeth_core_free_card(card);
5612 err_dev:
5613         put_device(dev);
5614         return rc;
5615 }
5616 
5617 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5618 {
5619         unsigned long flags;
5620         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5621 
5622         QETH_DBF_TEXT(SETUP, 2, "removedv");
5623 
5624         if (card->discipline) {
5625                 card->discipline->remove(gdev);
5626                 qeth_core_free_discipline(card);
5627         }
5628 
5629         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5630         list_del(&card->list);
5631         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5632         qeth_core_free_card(card);
5633         dev_set_drvdata(&gdev->dev, NULL);
5634         put_device(&gdev->dev);
5635         return;
5636 }
5637 
5638 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5639 {
5640         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5641         int rc = 0;
5642         int def_discipline;
5643 
5644         if (!card->discipline) {
5645                 if (card->info.type == QETH_CARD_TYPE_IQD)
5646                         def_discipline = QETH_DISCIPLINE_LAYER3;
5647                 else
5648                         def_discipline = QETH_DISCIPLINE_LAYER2;
5649                 rc = qeth_core_load_discipline(card, def_discipline);
5650                 if (rc)
5651                         goto err;
5652                 rc = card->discipline->setup(card->gdev);
5653                 if (rc)
5654                         goto err;
5655         }
5656         rc = card->discipline->set_online(gdev);
5657 err:
5658         return rc;
5659 }
5660 
5661 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5662 {
5663         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5664         return card->discipline->set_offline(gdev);
5665 }
5666 
5667 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5668 {
5669         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5670         if (card->discipline && card->discipline->shutdown)
5671                 card->discipline->shutdown(gdev);
5672 }
5673 
5674 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5675 {
5676         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5677         if (card->discipline && card->discipline->prepare)
5678                 return card->discipline->prepare(gdev);
5679         return 0;
5680 }
5681 
5682 static void qeth_core_complete(struct ccwgroup_device *gdev)
5683 {
5684         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5685         if (card->discipline && card->discipline->complete)
5686                 card->discipline->complete(gdev);
5687 }
5688 
5689 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5690 {
5691         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5692         if (card->discipline && card->discipline->freeze)
5693                 return card->discipline->freeze(gdev);
5694         return 0;
5695 }
5696 
5697 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5698 {
5699         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5700         if (card->discipline && card->discipline->thaw)
5701                 return card->discipline->thaw(gdev);
5702         return 0;
5703 }
5704 
5705 static int qeth_core_restore(struct ccwgroup_device *gdev)
5706 {
5707         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5708         if (card->discipline && card->discipline->restore)
5709                 return card->discipline->restore(gdev);
5710         return 0;
5711 }
5712 
5713 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5714         .driver = {
5715                 .owner = THIS_MODULE,
5716                 .name = "qeth",
5717         },
5718         .setup = qeth_core_probe_device,
5719         .remove = qeth_core_remove_device,
5720         .set_online = qeth_core_set_online,
5721         .set_offline = qeth_core_set_offline,
5722         .shutdown = qeth_core_shutdown,
5723         .prepare = qeth_core_prepare,
5724         .complete = qeth_core_complete,
5725         .freeze = qeth_core_freeze,
5726         .thaw = qeth_core_thaw,
5727         .restore = qeth_core_restore,
5728 };
5729 
5730 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5731                                             const char *buf, size_t count)
5732 {
5733         int err;
5734 
5735         err = ccwgroup_create_dev(qeth_core_root_dev,
5736                                   &qeth_core_ccwgroup_driver, 3, buf);
5737 
5738         return err ? err : count;
5739 }
5740 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5741 
5742 static struct attribute *qeth_drv_attrs[] = {
5743         &driver_attr_group.attr,
5744         NULL,
5745 };
5746 static struct attribute_group qeth_drv_attr_group = {
5747         .attrs = qeth_drv_attrs,
5748 };
5749 static const struct attribute_group *qeth_drv_attr_groups[] = {
5750         &qeth_drv_attr_group,
5751         NULL,
5752 };
5753 
5754 static struct {
5755         const char str[ETH_GSTRING_LEN];
5756 } qeth_ethtool_stats_keys[] = {
5757 /*  0 */{"rx skbs"},
5758         {"rx buffers"},
5759         {"tx skbs"},
5760         {"tx buffers"},
5761         {"tx skbs no packing"},
5762         {"tx buffers no packing"},
5763         {"tx skbs packing"},
5764         {"tx buffers packing"},
5765         {"tx sg skbs"},
5766         {"tx sg frags"},
5767 /* 10 */{"rx sg skbs"},
5768         {"rx sg frags"},
5769         {"rx sg page allocs"},
5770         {"tx large kbytes"},
5771         {"tx large count"},
5772         {"tx pk state ch n->p"},
5773         {"tx pk state ch p->n"},
5774         {"tx pk watermark low"},
5775         {"tx pk watermark high"},
5776         {"queue 0 buffer usage"},
5777 /* 20 */{"queue 1 buffer usage"},
5778         {"queue 2 buffer usage"},
5779         {"queue 3 buffer usage"},
5780         {"rx poll time"},
5781         {"rx poll count"},
5782         {"rx do_QDIO time"},
5783         {"rx do_QDIO count"},
5784         {"tx handler time"},
5785         {"tx handler count"},
5786         {"tx time"},
5787 /* 30 */{"tx count"},
5788         {"tx do_QDIO time"},
5789         {"tx do_QDIO count"},
5790         {"tx csum"},
5791         {"tx lin"},
5792         {"cq handler count"},
5793         {"cq handler time"}
5794 };
5795 
5796 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5797 {
5798         switch (stringset) {
5799         case ETH_SS_STATS:
5800                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5801         default:
5802                 return -EINVAL;
5803         }
5804 }
5805 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5806 
5807 void qeth_core_get_ethtool_stats(struct net_device *dev,
5808                 struct ethtool_stats *stats, u64 *data)
5809 {
5810         struct qeth_card *card = dev->ml_priv;
5811         data[0] = card->stats.rx_packets -
5812                                 card->perf_stats.initial_rx_packets;
5813         data[1] = card->perf_stats.bufs_rec;
5814         data[2] = card->stats.tx_packets -
5815                                 card->perf_stats.initial_tx_packets;
5816         data[3] = card->perf_stats.bufs_sent;
5817         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5818                         - card->perf_stats.skbs_sent_pack;
5819         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5820         data[6] = card->perf_stats.skbs_sent_pack;
5821         data[7] = card->perf_stats.bufs_sent_pack;
5822         data[8] = card->perf_stats.sg_skbs_sent;
5823         data[9] = card->perf_stats.sg_frags_sent;
5824         data[10] = card->perf_stats.sg_skbs_rx;
5825         data[11] = card->perf_stats.sg_frags_rx;
5826         data[12] = card->perf_stats.sg_alloc_page_rx;
5827         data[13] = (card->perf_stats.large_send_bytes >> 10);
5828         data[14] = card->perf_stats.large_send_cnt;
5829         data[15] = card->perf_stats.sc_dp_p;
5830         data[16] = card->perf_stats.sc_p_dp;
5831         data[17] = QETH_LOW_WATERMARK_PACK;
5832         data[18] = QETH_HIGH_WATERMARK_PACK;
5833         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5834         data[20] = (card->qdio.no_out_queues > 1) ?
5835                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5836         data[21] = (card->qdio.no_out_queues > 2) ?
5837                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5838         data[22] = (card->qdio.no_out_queues > 3) ?
5839                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5840         data[23] = card->perf_stats.inbound_time;
5841         data[24] = card->perf_stats.inbound_cnt;
5842         data[25] = card->perf_stats.inbound_do_qdio_time;
5843         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5844         data[27] = card->perf_stats.outbound_handler_time;
5845         data[28] = card->perf_stats.outbound_handler_cnt;
5846         data[29] = card->perf_stats.outbound_time;
5847         data[30] = card->perf_stats.outbound_cnt;
5848         data[31] = card->perf_stats.outbound_do_qdio_time;
5849         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5850         data[33] = card->perf_stats.tx_csum;
5851         data[34] = card->perf_stats.tx_lin;
5852         data[35] = card->perf_stats.cq_cnt;
5853         data[36] = card->perf_stats.cq_time;
5854 }
5855 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5856 
5857 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5858 {
5859         switch (stringset) {
5860         case ETH_SS_STATS:
5861                 memcpy(data, &qeth_ethtool_stats_keys,
5862                         sizeof(qeth_ethtool_stats_keys));
5863                 break;
5864         default:
5865                 WARN_ON(1);
5866                 break;
5867         }
5868 }
5869 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5870 
5871 void qeth_core_get_drvinfo(struct net_device *dev,
5872                 struct ethtool_drvinfo *info)
5873 {
5874         struct qeth_card *card = dev->ml_priv;
5875 
5876         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5877                 sizeof(info->driver));
5878         strlcpy(info->version, "1.0", sizeof(info->version));
5879         strlcpy(info->fw_version, card->info.mcl_level,
5880                 sizeof(info->fw_version));
5881         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5882                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5883 }
5884 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5885 
5886 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5887 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5888 /* Always advertize and support all speeds up to specified, and only one     */
5889 /* specified port type.                                                      */
5890 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5891                                 int maxspeed, int porttype)
5892 {
5893         int port_sup, port_adv, spd_sup, spd_adv;
5894 
5895         switch (porttype) {
5896         case PORT_TP:
5897                 port_sup = SUPPORTED_TP;
5898                 port_adv = ADVERTISED_TP;
5899                 break;
5900         case PORT_FIBRE:
5901                 port_sup = SUPPORTED_FIBRE;
5902                 port_adv = ADVERTISED_FIBRE;
5903                 break;
5904         default:
5905                 port_sup = SUPPORTED_TP;
5906                 port_adv = ADVERTISED_TP;
5907                 WARN_ON_ONCE(1);
5908         }
5909 
5910         /* "Fallthrough" case'es ordered from high to low result in setting  */
5911         /* flags cumulatively, starting from the specified speed and down to */
5912         /* the lowest possible.                                              */
5913         spd_sup = 0;
5914         spd_adv = 0;
5915         switch (maxspeed) {
5916         case SPEED_10000:
5917                 spd_sup |= SUPPORTED_10000baseT_Full;
5918                 spd_adv |= ADVERTISED_10000baseT_Full;
5919         case SPEED_1000:
5920                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5921                 spd_adv |= ADVERTISED_1000baseT_Half |
5922                                                 ADVERTISED_1000baseT_Full;
5923         case SPEED_100:
5924                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5925                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5926         case SPEED_10:
5927                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5928                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5929         break;
5930         default:
5931                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5932                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5933                 WARN_ON_ONCE(1);
5934         }
5935         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5936         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5937 }
5938 
5939 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5940                                         struct ethtool_cmd *ecmd)
5941 {
5942         struct qeth_card *card = netdev->ml_priv;
5943         enum qeth_link_types link_type;
5944         struct carrier_info carrier_info;
5945         int rc;
5946         u32 speed;
5947 
5948         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5949                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5950         else
5951                 link_type = card->info.link_type;
5952 
5953         ecmd->transceiver = XCVR_INTERNAL;
5954         ecmd->duplex = DUPLEX_FULL;
5955         ecmd->autoneg = AUTONEG_ENABLE;
5956 
5957         switch (link_type) {
5958         case QETH_LINK_TYPE_FAST_ETH:
5959         case QETH_LINK_TYPE_LANE_ETH100:
5960                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5961                 speed = SPEED_100;
5962                 ecmd->port = PORT_TP;
5963                 break;
5964 
5965         case QETH_LINK_TYPE_GBIT_ETH:
5966         case QETH_LINK_TYPE_LANE_ETH1000:
5967                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5968                 speed = SPEED_1000;
5969                 ecmd->port = PORT_FIBRE;
5970                 break;
5971 
5972         case QETH_LINK_TYPE_10GBIT_ETH:
5973                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5974                 speed = SPEED_10000;
5975                 ecmd->port = PORT_FIBRE;
5976                 break;
5977 
5978         default:
5979                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5980                 speed = SPEED_10;
5981                 ecmd->port = PORT_TP;
5982         }
5983         ethtool_cmd_speed_set(ecmd, speed);
5984 
5985         /* Check if we can obtain more accurate information.     */
5986         /* If QUERY_CARD_INFO command is not supported or fails, */
5987         /* just return the heuristics that was filled above.     */
5988         if (!qeth_card_hw_is_reachable(card))
5989                 return -ENODEV;
5990         rc = qeth_query_card_info(card, &carrier_info);
5991         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5992                 return 0;
5993         if (rc) /* report error from the hardware operation */
5994                 return rc;
5995         /* on success, fill in the information got from the hardware */
5996 
5997         netdev_dbg(netdev,
5998         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5999                         carrier_info.card_type,
6000                         carrier_info.port_mode,
6001                         carrier_info.port_speed);
6002 
6003         /* Update attributes for which we've obtained more authoritative */
6004         /* information, leave the rest the way they where filled above.  */
6005         switch (carrier_info.card_type) {
6006         case CARD_INFO_TYPE_1G_COPPER_A:
6007         case CARD_INFO_TYPE_1G_COPPER_B:
6008                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6009                 ecmd->port = PORT_TP;
6010                 break;
6011         case CARD_INFO_TYPE_1G_FIBRE_A:
6012         case CARD_INFO_TYPE_1G_FIBRE_B:
6013                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6014                 ecmd->port = PORT_FIBRE;
6015                 break;
6016         case CARD_INFO_TYPE_10G_FIBRE_A:
6017         case CARD_INFO_TYPE_10G_FIBRE_B:
6018                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6019                 ecmd->port = PORT_FIBRE;
6020                 break;
6021         }
6022 
6023         switch (carrier_info.port_mode) {
6024         case CARD_INFO_PORTM_FULLDUPLEX:
6025                 ecmd->duplex = DUPLEX_FULL;
6026                 break;
6027         case CARD_INFO_PORTM_HALFDUPLEX:
6028                 ecmd->duplex = DUPLEX_HALF;
6029                 break;
6030         }
6031 
6032         switch (carrier_info.port_speed) {
6033         case CARD_INFO_PORTS_10M:
6034                 speed = SPEED_10;
6035                 break;
6036         case CARD_INFO_PORTS_100M:
6037                 speed = SPEED_100;
6038                 break;
6039         case CARD_INFO_PORTS_1G:
6040                 speed = SPEED_1000;
6041                 break;
6042         case CARD_INFO_PORTS_10G:
6043                 speed = SPEED_10000;
6044                 break;
6045         }
6046         ethtool_cmd_speed_set(ecmd, speed);
6047 
6048         return 0;
6049 }
6050 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6051 
6052 static int qeth_send_checksum_command(struct qeth_card *card)
6053 {
6054         int rc;
6055 
6056         rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6057                                           IPA_CMD_ASS_START, 0);
6058         if (rc) {
6059                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
6060                         "failed, using SW checksumming\n",
6061                         QETH_CARD_IFNAME(card));
6062                 return rc;
6063         }
6064         rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6065                                           IPA_CMD_ASS_ENABLE,
6066                                           card->info.csum_mask);
6067         if (rc) {
6068                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
6069                         "failed, using SW checksumming\n",
6070                         QETH_CARD_IFNAME(card));
6071                 return rc;
6072         }
6073         return 0;
6074 }
6075 
6076 int qeth_set_rx_csum(struct qeth_card *card, int on)
6077 {
6078         int rc;
6079 
6080         if (on) {
6081                 rc = qeth_send_checksum_command(card);
6082                 if (rc)
6083                         return -EIO;
6084                 dev_info(&card->gdev->dev,
6085                         "HW Checksumming (inbound) enabled\n");
6086         } else {
6087                 rc = qeth_send_simple_setassparms(card,
6088                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
6089                 if (rc)
6090                         return -EIO;
6091         }
6092         return 0;
6093 }
6094 EXPORT_SYMBOL_GPL(qeth_set_rx_csum);
6095 
6096 int qeth_start_ipa_tx_checksum(struct qeth_card *card)
6097 {
6098         int rc = 0;
6099 
6100         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6101                 return rc;
6102         rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6103                                           IPA_CMD_ASS_START, 0);
6104         if (rc)
6105                 goto err_out;
6106         rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6107                                           IPA_CMD_ASS_ENABLE,
6108                                           card->info.tx_csum_mask);
6109         if (rc)
6110                 goto err_out;
6111 
6112         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
6113         return rc;
6114 err_out:
6115         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
6116                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
6117         return rc;
6118 }
6119 EXPORT_SYMBOL_GPL(qeth_start_ipa_tx_checksum);
6120 
6121 static int __init qeth_core_init(void)
6122 {
6123         int rc;
6124 
6125         pr_info("loading core functions\n");
6126         INIT_LIST_HEAD(&qeth_core_card_list.list);
6127         INIT_LIST_HEAD(&qeth_dbf_list);
6128         rwlock_init(&qeth_core_card_list.rwlock);
6129         mutex_init(&qeth_mod_mutex);
6130 
6131         qeth_wq = create_singlethread_workqueue("qeth_wq");
6132 
6133         rc = qeth_register_dbf_views();
6134         if (rc)
6135                 goto out_err;
6136         qeth_core_root_dev = root_device_register("qeth");
6137         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6138         if (rc)
6139                 goto register_err;
6140         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6141                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6142         if (!qeth_core_header_cache) {
6143                 rc = -ENOMEM;
6144                 goto slab_err;
6145         }
6146         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6147                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6148         if (!qeth_qdio_outbuf_cache) {
6149                 rc = -ENOMEM;
6150                 goto cqslab_err;
6151         }
6152         rc = ccw_driver_register(&qeth_ccw_driver);
6153         if (rc)
6154                 goto ccw_err;
6155         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6156         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6157         if (rc)
6158                 goto ccwgroup_err;
6159 
6160         return 0;
6161 
6162 ccwgroup_err:
6163         ccw_driver_unregister(&qeth_ccw_driver);
6164 ccw_err:
6165         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6166 cqslab_err:
6167         kmem_cache_destroy(qeth_core_header_cache);
6168 slab_err:
6169         root_device_unregister(qeth_core_root_dev);
6170 register_err:
6171         qeth_unregister_dbf_views();
6172 out_err:
6173         pr_err("Initializing the qeth device driver failed\n");
6174         return rc;
6175 }
6176 
6177 static void __exit qeth_core_exit(void)
6178 {
6179         qeth_clear_dbf_list();
6180         destroy_workqueue(qeth_wq);
6181         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6182         ccw_driver_unregister(&qeth_ccw_driver);
6183         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6184         kmem_cache_destroy(qeth_core_header_cache);
6185         root_device_unregister(qeth_core_root_dev);
6186         qeth_unregister_dbf_views();
6187         pr_info("core functions removed\n");
6188 }
6189 
6190 module_init(qeth_core_init);
6191 module_exit(qeth_core_exit);
6192 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6193 MODULE_DESCRIPTION("qeth core functions");
6194 MODULE_LICENSE("GPL");
6195 

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