Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

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 static void qeth_close_dev_handler(struct work_struct *work)
 77 {
 78         struct qeth_card *card;
 79 
 80         card = container_of(work, struct qeth_card, close_dev_work);
 81         QETH_CARD_TEXT(card, 2, "cldevhdl");
 82         rtnl_lock();
 83         dev_close(card->dev);
 84         rtnl_unlock();
 85         ccwgroup_set_offline(card->gdev);
 86 }
 87 
 88 void qeth_close_dev(struct qeth_card *card)
 89 {
 90         QETH_CARD_TEXT(card, 2, "cldevsubm");
 91         queue_work(qeth_wq, &card->close_dev_work);
 92 }
 93 EXPORT_SYMBOL_GPL(qeth_close_dev);
 94 
 95 static inline const char *qeth_get_cardname(struct qeth_card *card)
 96 {
 97         if (card->info.guestlan) {
 98                 switch (card->info.type) {
 99                 case QETH_CARD_TYPE_OSD:
100                         return " Virtual NIC QDIO";
101                 case QETH_CARD_TYPE_IQD:
102                         return " Virtual NIC Hiper";
103                 case QETH_CARD_TYPE_OSM:
104                         return " Virtual NIC QDIO - OSM";
105                 case QETH_CARD_TYPE_OSX:
106                         return " Virtual NIC QDIO - OSX";
107                 default:
108                         return " unknown";
109                 }
110         } else {
111                 switch (card->info.type) {
112                 case QETH_CARD_TYPE_OSD:
113                         return " OSD Express";
114                 case QETH_CARD_TYPE_IQD:
115                         return " HiperSockets";
116                 case QETH_CARD_TYPE_OSN:
117                         return " OSN QDIO";
118                 case QETH_CARD_TYPE_OSM:
119                         return " OSM QDIO";
120                 case QETH_CARD_TYPE_OSX:
121                         return " OSX QDIO";
122                 default:
123                         return " unknown";
124                 }
125         }
126         return " n/a";
127 }
128 
129 /* max length to be returned: 14 */
130 const char *qeth_get_cardname_short(struct qeth_card *card)
131 {
132         if (card->info.guestlan) {
133                 switch (card->info.type) {
134                 case QETH_CARD_TYPE_OSD:
135                         return "Virt.NIC QDIO";
136                 case QETH_CARD_TYPE_IQD:
137                         return "Virt.NIC Hiper";
138                 case QETH_CARD_TYPE_OSM:
139                         return "Virt.NIC OSM";
140                 case QETH_CARD_TYPE_OSX:
141                         return "Virt.NIC OSX";
142                 default:
143                         return "unknown";
144                 }
145         } else {
146                 switch (card->info.type) {
147                 case QETH_CARD_TYPE_OSD:
148                         switch (card->info.link_type) {
149                         case QETH_LINK_TYPE_FAST_ETH:
150                                 return "OSD_100";
151                         case QETH_LINK_TYPE_HSTR:
152                                 return "HSTR";
153                         case QETH_LINK_TYPE_GBIT_ETH:
154                                 return "OSD_1000";
155                         case QETH_LINK_TYPE_10GBIT_ETH:
156                                 return "OSD_10GIG";
157                         case QETH_LINK_TYPE_LANE_ETH100:
158                                 return "OSD_FE_LANE";
159                         case QETH_LINK_TYPE_LANE_TR:
160                                 return "OSD_TR_LANE";
161                         case QETH_LINK_TYPE_LANE_ETH1000:
162                                 return "OSD_GbE_LANE";
163                         case QETH_LINK_TYPE_LANE:
164                                 return "OSD_ATM_LANE";
165                         default:
166                                 return "OSD_Express";
167                         }
168                 case QETH_CARD_TYPE_IQD:
169                         return "HiperSockets";
170                 case QETH_CARD_TYPE_OSN:
171                         return "OSN";
172                 case QETH_CARD_TYPE_OSM:
173                         return "OSM_1000";
174                 case QETH_CARD_TYPE_OSX:
175                         return "OSX_10GIG";
176                 default:
177                         return "unknown";
178                 }
179         }
180         return "n/a";
181 }
182 
183 void qeth_set_recovery_task(struct qeth_card *card)
184 {
185         card->recovery_task = current;
186 }
187 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
188 
189 void qeth_clear_recovery_task(struct qeth_card *card)
190 {
191         card->recovery_task = NULL;
192 }
193 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
194 
195 static bool qeth_is_recovery_task(const struct qeth_card *card)
196 {
197         return card->recovery_task == current;
198 }
199 
200 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
201                          int clear_start_mask)
202 {
203         unsigned long flags;
204 
205         spin_lock_irqsave(&card->thread_mask_lock, flags);
206         card->thread_allowed_mask = threads;
207         if (clear_start_mask)
208                 card->thread_start_mask &= threads;
209         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
210         wake_up(&card->wait_q);
211 }
212 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
213 
214 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
215 {
216         unsigned long flags;
217         int rc = 0;
218 
219         spin_lock_irqsave(&card->thread_mask_lock, flags);
220         rc = (card->thread_running_mask & threads);
221         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
222         return rc;
223 }
224 EXPORT_SYMBOL_GPL(qeth_threads_running);
225 
226 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
227 {
228         if (qeth_is_recovery_task(card))
229                 return 0;
230         return wait_event_interruptible(card->wait_q,
231                         qeth_threads_running(card, threads) == 0);
232 }
233 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
234 
235 void qeth_clear_working_pool_list(struct qeth_card *card)
236 {
237         struct qeth_buffer_pool_entry *pool_entry, *tmp;
238 
239         QETH_CARD_TEXT(card, 5, "clwrklst");
240         list_for_each_entry_safe(pool_entry, tmp,
241                             &card->qdio.in_buf_pool.entry_list, list){
242                         list_del(&pool_entry->list);
243         }
244 }
245 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
246 
247 static int qeth_alloc_buffer_pool(struct qeth_card *card)
248 {
249         struct qeth_buffer_pool_entry *pool_entry;
250         void *ptr;
251         int i, j;
252 
253         QETH_CARD_TEXT(card, 5, "alocpool");
254         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
255                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
256                 if (!pool_entry) {
257                         qeth_free_buffer_pool(card);
258                         return -ENOMEM;
259                 }
260                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
261                         ptr = (void *) __get_free_page(GFP_KERNEL);
262                         if (!ptr) {
263                                 while (j > 0)
264                                         free_page((unsigned long)
265                                                   pool_entry->elements[--j]);
266                                 kfree(pool_entry);
267                                 qeth_free_buffer_pool(card);
268                                 return -ENOMEM;
269                         }
270                         pool_entry->elements[j] = ptr;
271                 }
272                 list_add(&pool_entry->init_list,
273                          &card->qdio.init_pool.entry_list);
274         }
275         return 0;
276 }
277 
278 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
279 {
280         QETH_CARD_TEXT(card, 2, "realcbp");
281 
282         if ((card->state != CARD_STATE_DOWN) &&
283             (card->state != CARD_STATE_RECOVER))
284                 return -EPERM;
285 
286         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
287         qeth_clear_working_pool_list(card);
288         qeth_free_buffer_pool(card);
289         card->qdio.in_buf_pool.buf_count = bufcnt;
290         card->qdio.init_pool.buf_count = bufcnt;
291         return qeth_alloc_buffer_pool(card);
292 }
293 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
294 
295 static inline int qeth_cq_init(struct qeth_card *card)
296 {
297         int rc;
298 
299         if (card->options.cq == QETH_CQ_ENABLED) {
300                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
301                 memset(card->qdio.c_q->qdio_bufs, 0,
302                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
303                 card->qdio.c_q->next_buf_to_init = 127;
304                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
305                              card->qdio.no_in_queues - 1, 0,
306                              127);
307                 if (rc) {
308                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
309                         goto out;
310                 }
311         }
312         rc = 0;
313 out:
314         return rc;
315 }
316 
317 static inline int qeth_alloc_cq(struct qeth_card *card)
318 {
319         int rc;
320 
321         if (card->options.cq == QETH_CQ_ENABLED) {
322                 int i;
323                 struct qdio_outbuf_state *outbuf_states;
324 
325                 QETH_DBF_TEXT(SETUP, 2, "cqon");
326                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
327                                          GFP_KERNEL);
328                 if (!card->qdio.c_q) {
329                         rc = -1;
330                         goto kmsg_out;
331                 }
332                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
333 
334                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
335                         card->qdio.c_q->bufs[i].buffer =
336                                 &card->qdio.c_q->qdio_bufs[i];
337                 }
338 
339                 card->qdio.no_in_queues = 2;
340 
341                 card->qdio.out_bufstates =
342                         kzalloc(card->qdio.no_out_queues *
343                                 QDIO_MAX_BUFFERS_PER_Q *
344                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
345                 outbuf_states = card->qdio.out_bufstates;
346                 if (outbuf_states == NULL) {
347                         rc = -1;
348                         goto free_cq_out;
349                 }
350                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
351                         card->qdio.out_qs[i]->bufstates = outbuf_states;
352                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
353                 }
354         } else {
355                 QETH_DBF_TEXT(SETUP, 2, "nocq");
356                 card->qdio.c_q = NULL;
357                 card->qdio.no_in_queues = 1;
358         }
359         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
360         rc = 0;
361 out:
362         return rc;
363 free_cq_out:
364         kfree(card->qdio.c_q);
365         card->qdio.c_q = NULL;
366 kmsg_out:
367         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
368         goto out;
369 }
370 
371 static inline void qeth_free_cq(struct qeth_card *card)
372 {
373         if (card->qdio.c_q) {
374                 --card->qdio.no_in_queues;
375                 kfree(card->qdio.c_q);
376                 card->qdio.c_q = NULL;
377         }
378         kfree(card->qdio.out_bufstates);
379         card->qdio.out_bufstates = NULL;
380 }
381 
382 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
383         int delayed) {
384         enum iucv_tx_notify n;
385 
386         switch (sbalf15) {
387         case 0:
388                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
389                 break;
390         case 4:
391         case 16:
392         case 17:
393         case 18:
394                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
395                         TX_NOTIFY_UNREACHABLE;
396                 break;
397         default:
398                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
399                         TX_NOTIFY_GENERALERROR;
400                 break;
401         }
402 
403         return n;
404 }
405 
406 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
407         int bidx, int forced_cleanup)
408 {
409         if (q->card->options.cq != QETH_CQ_ENABLED)
410                 return;
411 
412         if (q->bufs[bidx]->next_pending != NULL) {
413                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
414                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
415 
416                 while (c) {
417                         if (forced_cleanup ||
418                             atomic_read(&c->state) ==
419                               QETH_QDIO_BUF_HANDLED_DELAYED) {
420                                 struct qeth_qdio_out_buffer *f = c;
421                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
422                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
423                                 /* release here to avoid interleaving between
424                                    outbound tasklet and inbound tasklet
425                                    regarding notifications and lifecycle */
426                                 qeth_release_skbs(c);
427 
428                                 c = f->next_pending;
429                                 WARN_ON_ONCE(head->next_pending != f);
430                                 head->next_pending = c;
431                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
432                         } else {
433                                 head = c;
434                                 c = c->next_pending;
435                         }
436 
437                 }
438         }
439         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
440                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
441                 /* for recovery situations */
442                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
443                 qeth_init_qdio_out_buf(q, bidx);
444                 QETH_CARD_TEXT(q->card, 2, "clprecov");
445         }
446 }
447 
448 
449 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
450                 unsigned long phys_aob_addr) {
451         struct qaob *aob;
452         struct qeth_qdio_out_buffer *buffer;
453         enum iucv_tx_notify notification;
454 
455         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
456         QETH_CARD_TEXT(card, 5, "haob");
457         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
458         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
459         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
460 
461         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
462                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
463                 notification = TX_NOTIFY_OK;
464         } else {
465                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
466                                                         QETH_QDIO_BUF_PENDING);
467                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
468                 notification = TX_NOTIFY_DELAYED_OK;
469         }
470 
471         if (aob->aorc != 0)  {
472                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
473                 notification = qeth_compute_cq_notification(aob->aorc, 1);
474         }
475         qeth_notify_skbs(buffer->q, buffer, notification);
476 
477         buffer->aob = NULL;
478         qeth_clear_output_buffer(buffer->q, buffer,
479                                  QETH_QDIO_BUF_HANDLED_DELAYED);
480 
481         /* from here on: do not touch buffer anymore */
482         qdio_release_aob(aob);
483 }
484 
485 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
486 {
487         return card->options.cq == QETH_CQ_ENABLED &&
488             card->qdio.c_q != NULL &&
489             queue != 0 &&
490             queue == card->qdio.no_in_queues - 1;
491 }
492 
493 
494 static int qeth_issue_next_read(struct qeth_card *card)
495 {
496         int rc;
497         struct qeth_cmd_buffer *iob;
498 
499         QETH_CARD_TEXT(card, 5, "issnxrd");
500         if (card->read.state != CH_STATE_UP)
501                 return -EIO;
502         iob = qeth_get_buffer(&card->read);
503         if (!iob) {
504                 dev_warn(&card->gdev->dev, "The qeth device driver "
505                         "failed to recover an error on the device\n");
506                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
507                         "available\n", dev_name(&card->gdev->dev));
508                 return -ENOMEM;
509         }
510         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
511         QETH_CARD_TEXT(card, 6, "noirqpnd");
512         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
513                               (addr_t) iob, 0, 0);
514         if (rc) {
515                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
516                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
517                 atomic_set(&card->read.irq_pending, 0);
518                 card->read_or_write_problem = 1;
519                 qeth_schedule_recovery(card);
520                 wake_up(&card->wait_q);
521         }
522         return rc;
523 }
524 
525 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
526 {
527         struct qeth_reply *reply;
528 
529         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
530         if (reply) {
531                 atomic_set(&reply->refcnt, 1);
532                 atomic_set(&reply->received, 0);
533                 reply->card = card;
534         }
535         return reply;
536 }
537 
538 static void qeth_get_reply(struct qeth_reply *reply)
539 {
540         WARN_ON(atomic_read(&reply->refcnt) <= 0);
541         atomic_inc(&reply->refcnt);
542 }
543 
544 static void qeth_put_reply(struct qeth_reply *reply)
545 {
546         WARN_ON(atomic_read(&reply->refcnt) <= 0);
547         if (atomic_dec_and_test(&reply->refcnt))
548                 kfree(reply);
549 }
550 
551 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
552                 struct qeth_card *card)
553 {
554         char *ipa_name;
555         int com = cmd->hdr.command;
556         ipa_name = qeth_get_ipa_cmd_name(com);
557         if (rc)
558                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
559                                 "x%X \"%s\"\n",
560                                 ipa_name, com, dev_name(&card->gdev->dev),
561                                 QETH_CARD_IFNAME(card), rc,
562                                 qeth_get_ipa_msg(rc));
563         else
564                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
565                                 ipa_name, com, dev_name(&card->gdev->dev),
566                                 QETH_CARD_IFNAME(card));
567 }
568 
569 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
570                 struct qeth_cmd_buffer *iob)
571 {
572         struct qeth_ipa_cmd *cmd = NULL;
573 
574         QETH_CARD_TEXT(card, 5, "chkipad");
575         if (IS_IPA(iob->data)) {
576                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
577                 if (IS_IPA_REPLY(cmd)) {
578                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
579                             cmd->hdr.command != IPA_CMD_DELCCID &&
580                             cmd->hdr.command != IPA_CMD_MODCCID &&
581                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
582                                 qeth_issue_ipa_msg(cmd,
583                                                 cmd->hdr.return_code, card);
584                         return cmd;
585                 } else {
586                         switch (cmd->hdr.command) {
587                         case IPA_CMD_STOPLAN:
588                                 if (cmd->hdr.return_code ==
589                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
590                                         dev_err(&card->gdev->dev,
591                                            "Interface %s is down because the "
592                                            "adjacent port is no longer in "
593                                            "reflective relay mode\n",
594                                            QETH_CARD_IFNAME(card));
595                                         qeth_close_dev(card);
596                                 } else {
597                                         dev_warn(&card->gdev->dev,
598                                            "The link for interface %s on CHPID"
599                                            " 0x%X failed\n",
600                                            QETH_CARD_IFNAME(card),
601                                            card->info.chpid);
602                                         qeth_issue_ipa_msg(cmd,
603                                                 cmd->hdr.return_code, card);
604                                 }
605                                 card->lan_online = 0;
606                                 if (card->dev && netif_carrier_ok(card->dev))
607                                         netif_carrier_off(card->dev);
608                                 return NULL;
609                         case IPA_CMD_STARTLAN:
610                                 dev_info(&card->gdev->dev,
611                                            "The link for %s on CHPID 0x%X has"
612                                            " been restored\n",
613                                            QETH_CARD_IFNAME(card),
614                                            card->info.chpid);
615                                 netif_carrier_on(card->dev);
616                                 card->lan_online = 1;
617                                 if (card->info.hwtrap)
618                                         card->info.hwtrap = 2;
619                                 qeth_schedule_recovery(card);
620                                 return NULL;
621                         case IPA_CMD_SETBRIDGEPORT:
622                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
623                                 if (card->discipline->control_event_handler
624                                                                 (card, cmd))
625                                         return cmd;
626                                 else
627                                         return NULL;
628                         case IPA_CMD_MODCCID:
629                                 return cmd;
630                         case IPA_CMD_REGISTER_LOCAL_ADDR:
631                                 QETH_CARD_TEXT(card, 3, "irla");
632                                 break;
633                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
634                                 QETH_CARD_TEXT(card, 3, "urla");
635                                 break;
636                         default:
637                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
638                                            "but not a reply!\n");
639                                 break;
640                         }
641                 }
642         }
643         return cmd;
644 }
645 
646 void qeth_clear_ipacmd_list(struct qeth_card *card)
647 {
648         struct qeth_reply *reply, *r;
649         unsigned long flags;
650 
651         QETH_CARD_TEXT(card, 4, "clipalst");
652 
653         spin_lock_irqsave(&card->lock, flags);
654         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
655                 qeth_get_reply(reply);
656                 reply->rc = -EIO;
657                 atomic_inc(&reply->received);
658                 list_del_init(&reply->list);
659                 wake_up(&reply->wait_q);
660                 qeth_put_reply(reply);
661         }
662         spin_unlock_irqrestore(&card->lock, flags);
663         atomic_set(&card->write.irq_pending, 0);
664 }
665 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
666 
667 static int qeth_check_idx_response(struct qeth_card *card,
668         unsigned char *buffer)
669 {
670         if (!buffer)
671                 return 0;
672 
673         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
674         if ((buffer[2] & 0xc0) == 0xc0) {
675                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
676                            "with cause code 0x%02x%s\n",
677                            buffer[4],
678                            ((buffer[4] == 0x22) ?
679                             " -- try another portname" : ""));
680                 QETH_CARD_TEXT(card, 2, "ckidxres");
681                 QETH_CARD_TEXT(card, 2, " idxterm");
682                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
683                 if (buffer[4] == 0xf6) {
684                         dev_err(&card->gdev->dev,
685                         "The qeth device is not configured "
686                         "for the OSI layer required by z/VM\n");
687                         return -EPERM;
688                 }
689                 return -EIO;
690         }
691         return 0;
692 }
693 
694 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
695                 __u32 len)
696 {
697         struct qeth_card *card;
698 
699         card = CARD_FROM_CDEV(channel->ccwdev);
700         QETH_CARD_TEXT(card, 4, "setupccw");
701         if (channel == &card->read)
702                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
703         else
704                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
705         channel->ccw.count = len;
706         channel->ccw.cda = (__u32) __pa(iob);
707 }
708 
709 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
710 {
711         __u8 index;
712 
713         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
714         index = channel->io_buf_no;
715         do {
716                 if (channel->iob[index].state == BUF_STATE_FREE) {
717                         channel->iob[index].state = BUF_STATE_LOCKED;
718                         channel->io_buf_no = (channel->io_buf_no + 1) %
719                                 QETH_CMD_BUFFER_NO;
720                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
721                         return channel->iob + index;
722                 }
723                 index = (index + 1) % QETH_CMD_BUFFER_NO;
724         } while (index != channel->io_buf_no);
725 
726         return NULL;
727 }
728 
729 void qeth_release_buffer(struct qeth_channel *channel,
730                 struct qeth_cmd_buffer *iob)
731 {
732         unsigned long flags;
733 
734         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
735         spin_lock_irqsave(&channel->iob_lock, flags);
736         memset(iob->data, 0, QETH_BUFSIZE);
737         iob->state = BUF_STATE_FREE;
738         iob->callback = qeth_send_control_data_cb;
739         iob->rc = 0;
740         spin_unlock_irqrestore(&channel->iob_lock, flags);
741         wake_up(&channel->wait_q);
742 }
743 EXPORT_SYMBOL_GPL(qeth_release_buffer);
744 
745 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
746 {
747         struct qeth_cmd_buffer *buffer = NULL;
748         unsigned long flags;
749 
750         spin_lock_irqsave(&channel->iob_lock, flags);
751         buffer = __qeth_get_buffer(channel);
752         spin_unlock_irqrestore(&channel->iob_lock, flags);
753         return buffer;
754 }
755 
756 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
757 {
758         struct qeth_cmd_buffer *buffer;
759         wait_event(channel->wait_q,
760                    ((buffer = qeth_get_buffer(channel)) != NULL));
761         return buffer;
762 }
763 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
764 
765 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
766 {
767         int cnt;
768 
769         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
770                 qeth_release_buffer(channel, &channel->iob[cnt]);
771         channel->buf_no = 0;
772         channel->io_buf_no = 0;
773 }
774 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
775 
776 static void qeth_send_control_data_cb(struct qeth_channel *channel,
777                   struct qeth_cmd_buffer *iob)
778 {
779         struct qeth_card *card;
780         struct qeth_reply *reply, *r;
781         struct qeth_ipa_cmd *cmd;
782         unsigned long flags;
783         int keep_reply;
784         int rc = 0;
785 
786         card = CARD_FROM_CDEV(channel->ccwdev);
787         QETH_CARD_TEXT(card, 4, "sndctlcb");
788         rc = qeth_check_idx_response(card, iob->data);
789         switch (rc) {
790         case 0:
791                 break;
792         case -EIO:
793                 qeth_clear_ipacmd_list(card);
794                 qeth_schedule_recovery(card);
795                 /* fall through */
796         default:
797                 goto out;
798         }
799 
800         cmd = qeth_check_ipa_data(card, iob);
801         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
802                 goto out;
803         /*in case of OSN : check if cmd is set */
804         if (card->info.type == QETH_CARD_TYPE_OSN &&
805             cmd &&
806             cmd->hdr.command != IPA_CMD_STARTLAN &&
807             card->osn_info.assist_cb != NULL) {
808                 card->osn_info.assist_cb(card->dev, cmd);
809                 goto out;
810         }
811 
812         spin_lock_irqsave(&card->lock, flags);
813         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
814                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
815                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
816                         qeth_get_reply(reply);
817                         list_del_init(&reply->list);
818                         spin_unlock_irqrestore(&card->lock, flags);
819                         keep_reply = 0;
820                         if (reply->callback != NULL) {
821                                 if (cmd) {
822                                         reply->offset = (__u16)((char *)cmd -
823                                                         (char *)iob->data);
824                                         keep_reply = reply->callback(card,
825                                                         reply,
826                                                         (unsigned long)cmd);
827                                 } else
828                                         keep_reply = reply->callback(card,
829                                                         reply,
830                                                         (unsigned long)iob);
831                         }
832                         if (cmd)
833                                 reply->rc = (u16) cmd->hdr.return_code;
834                         else if (iob->rc)
835                                 reply->rc = iob->rc;
836                         if (keep_reply) {
837                                 spin_lock_irqsave(&card->lock, flags);
838                                 list_add_tail(&reply->list,
839                                               &card->cmd_waiter_list);
840                                 spin_unlock_irqrestore(&card->lock, flags);
841                         } else {
842                                 atomic_inc(&reply->received);
843                                 wake_up(&reply->wait_q);
844                         }
845                         qeth_put_reply(reply);
846                         goto out;
847                 }
848         }
849         spin_unlock_irqrestore(&card->lock, flags);
850 out:
851         memcpy(&card->seqno.pdu_hdr_ack,
852                 QETH_PDU_HEADER_SEQ_NO(iob->data),
853                 QETH_SEQ_NO_LENGTH);
854         qeth_release_buffer(channel, iob);
855 }
856 
857 static int qeth_setup_channel(struct qeth_channel *channel)
858 {
859         int cnt;
860 
861         QETH_DBF_TEXT(SETUP, 2, "setupch");
862         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
863                 channel->iob[cnt].data =
864                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
865                 if (channel->iob[cnt].data == NULL)
866                         break;
867                 channel->iob[cnt].state = BUF_STATE_FREE;
868                 channel->iob[cnt].channel = channel;
869                 channel->iob[cnt].callback = qeth_send_control_data_cb;
870                 channel->iob[cnt].rc = 0;
871         }
872         if (cnt < QETH_CMD_BUFFER_NO) {
873                 while (cnt-- > 0)
874                         kfree(channel->iob[cnt].data);
875                 return -ENOMEM;
876         }
877         channel->buf_no = 0;
878         channel->io_buf_no = 0;
879         atomic_set(&channel->irq_pending, 0);
880         spin_lock_init(&channel->iob_lock);
881 
882         init_waitqueue_head(&channel->wait_q);
883         return 0;
884 }
885 
886 static int qeth_set_thread_start_bit(struct qeth_card *card,
887                 unsigned long thread)
888 {
889         unsigned long flags;
890 
891         spin_lock_irqsave(&card->thread_mask_lock, flags);
892         if (!(card->thread_allowed_mask & thread) ||
893               (card->thread_start_mask & thread)) {
894                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
895                 return -EPERM;
896         }
897         card->thread_start_mask |= thread;
898         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
899         return 0;
900 }
901 
902 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
903 {
904         unsigned long flags;
905 
906         spin_lock_irqsave(&card->thread_mask_lock, flags);
907         card->thread_start_mask &= ~thread;
908         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
909         wake_up(&card->wait_q);
910 }
911 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
912 
913 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
914 {
915         unsigned long flags;
916 
917         spin_lock_irqsave(&card->thread_mask_lock, flags);
918         card->thread_running_mask &= ~thread;
919         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
920         wake_up(&card->wait_q);
921 }
922 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
923 
924 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
925 {
926         unsigned long flags;
927         int rc = 0;
928 
929         spin_lock_irqsave(&card->thread_mask_lock, flags);
930         if (card->thread_start_mask & thread) {
931                 if ((card->thread_allowed_mask & thread) &&
932                     !(card->thread_running_mask & thread)) {
933                         rc = 1;
934                         card->thread_start_mask &= ~thread;
935                         card->thread_running_mask |= thread;
936                 } else
937                         rc = -EPERM;
938         }
939         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
940         return rc;
941 }
942 
943 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
944 {
945         int rc = 0;
946 
947         wait_event(card->wait_q,
948                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
949         return rc;
950 }
951 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
952 
953 void qeth_schedule_recovery(struct qeth_card *card)
954 {
955         QETH_CARD_TEXT(card, 2, "startrec");
956         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
957                 schedule_work(&card->kernel_thread_starter);
958 }
959 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
960 
961 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
962 {
963         int dstat, cstat;
964         char *sense;
965         struct qeth_card *card;
966 
967         sense = (char *) irb->ecw;
968         cstat = irb->scsw.cmd.cstat;
969         dstat = irb->scsw.cmd.dstat;
970         card = CARD_FROM_CDEV(cdev);
971 
972         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
973                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
974                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
975                 QETH_CARD_TEXT(card, 2, "CGENCHK");
976                 dev_warn(&cdev->dev, "The qeth device driver "
977                         "failed to recover an error on the device\n");
978                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
979                         dev_name(&cdev->dev), dstat, cstat);
980                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
981                                 16, 1, irb, 64, 1);
982                 return 1;
983         }
984 
985         if (dstat & DEV_STAT_UNIT_CHECK) {
986                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
987                     SENSE_RESETTING_EVENT_FLAG) {
988                         QETH_CARD_TEXT(card, 2, "REVIND");
989                         return 1;
990                 }
991                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
992                     SENSE_COMMAND_REJECT_FLAG) {
993                         QETH_CARD_TEXT(card, 2, "CMDREJi");
994                         return 1;
995                 }
996                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
997                         QETH_CARD_TEXT(card, 2, "AFFE");
998                         return 1;
999                 }
1000                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1001                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1002                         return 0;
1003                 }
1004                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1005                         return 1;
1006         }
1007         return 0;
1008 }
1009 
1010 static long __qeth_check_irb_error(struct ccw_device *cdev,
1011                 unsigned long intparm, struct irb *irb)
1012 {
1013         struct qeth_card *card;
1014 
1015         card = CARD_FROM_CDEV(cdev);
1016 
1017         if (!card || !IS_ERR(irb))
1018                 return 0;
1019 
1020         switch (PTR_ERR(irb)) {
1021         case -EIO:
1022                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1023                         dev_name(&cdev->dev));
1024                 QETH_CARD_TEXT(card, 2, "ckirberr");
1025                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1026                 break;
1027         case -ETIMEDOUT:
1028                 dev_warn(&cdev->dev, "A hardware operation timed out"
1029                         " on the device\n");
1030                 QETH_CARD_TEXT(card, 2, "ckirberr");
1031                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1032                 if (intparm == QETH_RCD_PARM) {
1033                         if (card->data.ccwdev == cdev) {
1034                                 card->data.state = CH_STATE_DOWN;
1035                                 wake_up(&card->wait_q);
1036                         }
1037                 }
1038                 break;
1039         default:
1040                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1041                         dev_name(&cdev->dev), PTR_ERR(irb));
1042                 QETH_CARD_TEXT(card, 2, "ckirberr");
1043                 QETH_CARD_TEXT(card, 2, "  rc???");
1044         }
1045         return PTR_ERR(irb);
1046 }
1047 
1048 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1049                 struct irb *irb)
1050 {
1051         int rc;
1052         int cstat, dstat;
1053         struct qeth_cmd_buffer *buffer;
1054         struct qeth_channel *channel;
1055         struct qeth_card *card;
1056         struct qeth_cmd_buffer *iob;
1057         __u8 index;
1058 
1059         if (__qeth_check_irb_error(cdev, intparm, irb))
1060                 return;
1061         cstat = irb->scsw.cmd.cstat;
1062         dstat = irb->scsw.cmd.dstat;
1063 
1064         card = CARD_FROM_CDEV(cdev);
1065         if (!card)
1066                 return;
1067 
1068         QETH_CARD_TEXT(card, 5, "irq");
1069 
1070         if (card->read.ccwdev == cdev) {
1071                 channel = &card->read;
1072                 QETH_CARD_TEXT(card, 5, "read");
1073         } else if (card->write.ccwdev == cdev) {
1074                 channel = &card->write;
1075                 QETH_CARD_TEXT(card, 5, "write");
1076         } else {
1077                 channel = &card->data;
1078                 QETH_CARD_TEXT(card, 5, "data");
1079         }
1080         atomic_set(&channel->irq_pending, 0);
1081 
1082         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1083                 channel->state = CH_STATE_STOPPED;
1084 
1085         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1086                 channel->state = CH_STATE_HALTED;
1087 
1088         /*let's wake up immediately on data channel*/
1089         if ((channel == &card->data) && (intparm != 0) &&
1090             (intparm != QETH_RCD_PARM))
1091                 goto out;
1092 
1093         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1094                 QETH_CARD_TEXT(card, 6, "clrchpar");
1095                 /* we don't have to handle this further */
1096                 intparm = 0;
1097         }
1098         if (intparm == QETH_HALT_CHANNEL_PARM) {
1099                 QETH_CARD_TEXT(card, 6, "hltchpar");
1100                 /* we don't have to handle this further */
1101                 intparm = 0;
1102         }
1103         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1104             (dstat & DEV_STAT_UNIT_CHECK) ||
1105             (cstat)) {
1106                 if (irb->esw.esw0.erw.cons) {
1107                         dev_warn(&channel->ccwdev->dev,
1108                                 "The qeth device driver failed to recover "
1109                                 "an error on the device\n");
1110                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1111                                 "0x%X dstat 0x%X\n",
1112                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1113                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1114                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1115                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1116                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1117                 }
1118                 if (intparm == QETH_RCD_PARM) {
1119                         channel->state = CH_STATE_DOWN;
1120                         goto out;
1121                 }
1122                 rc = qeth_get_problem(cdev, irb);
1123                 if (rc) {
1124                         qeth_clear_ipacmd_list(card);
1125                         qeth_schedule_recovery(card);
1126                         goto out;
1127                 }
1128         }
1129 
1130         if (intparm == QETH_RCD_PARM) {
1131                 channel->state = CH_STATE_RCD_DONE;
1132                 goto out;
1133         }
1134         if (intparm) {
1135                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1136                 buffer->state = BUF_STATE_PROCESSED;
1137         }
1138         if (channel == &card->data)
1139                 return;
1140         if (channel == &card->read &&
1141             channel->state == CH_STATE_UP)
1142                 qeth_issue_next_read(card);
1143 
1144         iob = channel->iob;
1145         index = channel->buf_no;
1146         while (iob[index].state == BUF_STATE_PROCESSED) {
1147                 if (iob[index].callback != NULL)
1148                         iob[index].callback(channel, iob + index);
1149 
1150                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1151         }
1152         channel->buf_no = index;
1153 out:
1154         wake_up(&card->wait_q);
1155         return;
1156 }
1157 
1158 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1159                 struct qeth_qdio_out_buffer *buf,
1160                 enum iucv_tx_notify notification)
1161 {
1162         struct sk_buff *skb;
1163 
1164         if (skb_queue_empty(&buf->skb_list))
1165                 goto out;
1166         skb = skb_peek(&buf->skb_list);
1167         while (skb) {
1168                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1169                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1170                 if (skb->protocol == ETH_P_AF_IUCV) {
1171                         if (skb->sk) {
1172                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1173                                 iucv->sk_txnotify(skb, notification);
1174                         }
1175                 }
1176                 if (skb_queue_is_last(&buf->skb_list, skb))
1177                         skb = NULL;
1178                 else
1179                         skb = skb_queue_next(&buf->skb_list, skb);
1180         }
1181 out:
1182         return;
1183 }
1184 
1185 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1186 {
1187         struct sk_buff *skb;
1188         struct iucv_sock *iucv;
1189         int notify_general_error = 0;
1190 
1191         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1192                 notify_general_error = 1;
1193 
1194         /* release may never happen from within CQ tasklet scope */
1195         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1196 
1197         skb = skb_dequeue(&buf->skb_list);
1198         while (skb) {
1199                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1200                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1201                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1202                         if (skb->sk) {
1203                                 iucv = iucv_sk(skb->sk);
1204                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1205                         }
1206                 }
1207                 atomic_dec(&skb->users);
1208                 dev_kfree_skb_any(skb);
1209                 skb = skb_dequeue(&buf->skb_list);
1210         }
1211 }
1212 
1213 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1214                 struct qeth_qdio_out_buffer *buf,
1215                 enum qeth_qdio_buffer_states newbufstate)
1216 {
1217         int i;
1218 
1219         /* is PCI flag set on buffer? */
1220         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1221                 atomic_dec(&queue->set_pci_flags_count);
1222 
1223         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1224                 qeth_release_skbs(buf);
1225         }
1226         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1227                 if (buf->buffer->element[i].addr && buf->is_header[i])
1228                         kmem_cache_free(qeth_core_header_cache,
1229                                 buf->buffer->element[i].addr);
1230                 buf->is_header[i] = 0;
1231                 buf->buffer->element[i].length = 0;
1232                 buf->buffer->element[i].addr = NULL;
1233                 buf->buffer->element[i].eflags = 0;
1234                 buf->buffer->element[i].sflags = 0;
1235         }
1236         buf->buffer->element[15].eflags = 0;
1237         buf->buffer->element[15].sflags = 0;
1238         buf->next_element_to_fill = 0;
1239         atomic_set(&buf->state, newbufstate);
1240 }
1241 
1242 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1243 {
1244         int j;
1245 
1246         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1247                 if (!q->bufs[j])
1248                         continue;
1249                 qeth_cleanup_handled_pending(q, j, 1);
1250                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1251                 if (free) {
1252                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1253                         q->bufs[j] = NULL;
1254                 }
1255         }
1256 }
1257 
1258 void qeth_clear_qdio_buffers(struct qeth_card *card)
1259 {
1260         int i;
1261 
1262         QETH_CARD_TEXT(card, 2, "clearqdbf");
1263         /* clear outbound buffers to free skbs */
1264         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1265                 if (card->qdio.out_qs[i]) {
1266                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1267                 }
1268         }
1269 }
1270 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1271 
1272 static void qeth_free_buffer_pool(struct qeth_card *card)
1273 {
1274         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1275         int i = 0;
1276         list_for_each_entry_safe(pool_entry, tmp,
1277                                  &card->qdio.init_pool.entry_list, init_list){
1278                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1279                         free_page((unsigned long)pool_entry->elements[i]);
1280                 list_del(&pool_entry->init_list);
1281                 kfree(pool_entry);
1282         }
1283 }
1284 
1285 static void qeth_free_qdio_buffers(struct qeth_card *card)
1286 {
1287         int i, j;
1288 
1289         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1290                 QETH_QDIO_UNINITIALIZED)
1291                 return;
1292 
1293         qeth_free_cq(card);
1294         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1295         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1296                 if (card->qdio.in_q->bufs[j].rx_skb)
1297                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1298         }
1299         kfree(card->qdio.in_q);
1300         card->qdio.in_q = NULL;
1301         /* inbound buffer pool */
1302         qeth_free_buffer_pool(card);
1303         /* free outbound qdio_qs */
1304         if (card->qdio.out_qs) {
1305                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1306                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1307                         kfree(card->qdio.out_qs[i]);
1308                 }
1309                 kfree(card->qdio.out_qs);
1310                 card->qdio.out_qs = NULL;
1311         }
1312 }
1313 
1314 static void qeth_clean_channel(struct qeth_channel *channel)
1315 {
1316         int cnt;
1317 
1318         QETH_DBF_TEXT(SETUP, 2, "freech");
1319         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1320                 kfree(channel->iob[cnt].data);
1321 }
1322 
1323 static void qeth_set_single_write_queues(struct qeth_card *card)
1324 {
1325         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1326             (card->qdio.no_out_queues == 4))
1327                 qeth_free_qdio_buffers(card);
1328 
1329         card->qdio.no_out_queues = 1;
1330         if (card->qdio.default_out_queue != 0)
1331                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1332 
1333         card->qdio.default_out_queue = 0;
1334 }
1335 
1336 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1337 {
1338         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1339             (card->qdio.no_out_queues == 1)) {
1340                 qeth_free_qdio_buffers(card);
1341                 card->qdio.default_out_queue = 2;
1342         }
1343         card->qdio.no_out_queues = 4;
1344 }
1345 
1346 static void qeth_update_from_chp_desc(struct qeth_card *card)
1347 {
1348         struct ccw_device *ccwdev;
1349         struct channel_path_desc *chp_dsc;
1350 
1351         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1352 
1353         ccwdev = card->data.ccwdev;
1354         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1355         if (!chp_dsc)
1356                 goto out;
1357 
1358         card->info.func_level = 0x4100 + chp_dsc->desc;
1359         if (card->info.type == QETH_CARD_TYPE_IQD)
1360                 goto out;
1361 
1362         /* CHPP field bit 6 == 1 -> single queue */
1363         if ((chp_dsc->chpp & 0x02) == 0x02)
1364                 qeth_set_single_write_queues(card);
1365         else
1366                 qeth_set_multiple_write_queues(card);
1367 out:
1368         kfree(chp_dsc);
1369         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1370         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1371 }
1372 
1373 static void qeth_init_qdio_info(struct qeth_card *card)
1374 {
1375         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1376         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1377         /* inbound */
1378         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1379         if (card->info.type == QETH_CARD_TYPE_IQD)
1380                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1381         else
1382                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1383         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1384         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1385         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1386 }
1387 
1388 static void qeth_set_intial_options(struct qeth_card *card)
1389 {
1390         card->options.route4.type = NO_ROUTER;
1391         card->options.route6.type = NO_ROUTER;
1392         card->options.fake_broadcast = 0;
1393         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1394         card->options.performance_stats = 0;
1395         card->options.rx_sg_cb = QETH_RX_SG_CB;
1396         card->options.isolation = ISOLATION_MODE_NONE;
1397         card->options.cq = QETH_CQ_DISABLED;
1398 }
1399 
1400 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1401 {
1402         unsigned long flags;
1403         int rc = 0;
1404 
1405         spin_lock_irqsave(&card->thread_mask_lock, flags);
1406         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1407                         (u8) card->thread_start_mask,
1408                         (u8) card->thread_allowed_mask,
1409                         (u8) card->thread_running_mask);
1410         rc = (card->thread_start_mask & thread);
1411         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1412         return rc;
1413 }
1414 
1415 static void qeth_start_kernel_thread(struct work_struct *work)
1416 {
1417         struct task_struct *ts;
1418         struct qeth_card *card = container_of(work, struct qeth_card,
1419                                         kernel_thread_starter);
1420         QETH_CARD_TEXT(card , 2, "strthrd");
1421 
1422         if (card->read.state != CH_STATE_UP &&
1423             card->write.state != CH_STATE_UP)
1424                 return;
1425         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1426                 ts = kthread_run(card->discipline->recover, (void *)card,
1427                                 "qeth_recover");
1428                 if (IS_ERR(ts)) {
1429                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1430                         qeth_clear_thread_running_bit(card,
1431                                 QETH_RECOVER_THREAD);
1432                 }
1433         }
1434 }
1435 
1436 static int qeth_setup_card(struct qeth_card *card)
1437 {
1438 
1439         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1440         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1441 
1442         card->read.state  = CH_STATE_DOWN;
1443         card->write.state = CH_STATE_DOWN;
1444         card->data.state  = CH_STATE_DOWN;
1445         card->state = CARD_STATE_DOWN;
1446         card->lan_online = 0;
1447         card->read_or_write_problem = 0;
1448         card->dev = NULL;
1449         spin_lock_init(&card->vlanlock);
1450         spin_lock_init(&card->mclock);
1451         spin_lock_init(&card->lock);
1452         spin_lock_init(&card->ip_lock);
1453         spin_lock_init(&card->thread_mask_lock);
1454         mutex_init(&card->conf_mutex);
1455         mutex_init(&card->discipline_mutex);
1456         card->thread_start_mask = 0;
1457         card->thread_allowed_mask = 0;
1458         card->thread_running_mask = 0;
1459         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1460         INIT_LIST_HEAD(&card->ip_list);
1461         INIT_LIST_HEAD(card->ip_tbd_list);
1462         INIT_LIST_HEAD(&card->cmd_waiter_list);
1463         init_waitqueue_head(&card->wait_q);
1464         /* initial options */
1465         qeth_set_intial_options(card);
1466         /* IP address takeover */
1467         INIT_LIST_HEAD(&card->ipato.entries);
1468         card->ipato.enabled = 0;
1469         card->ipato.invert4 = 0;
1470         card->ipato.invert6 = 0;
1471         /* init QDIO stuff */
1472         qeth_init_qdio_info(card);
1473         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1474         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1475         return 0;
1476 }
1477 
1478 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1479 {
1480         struct qeth_card *card = container_of(slr, struct qeth_card,
1481                                         qeth_service_level);
1482         if (card->info.mcl_level[0])
1483                 seq_printf(m, "qeth: %s firmware level %s\n",
1484                         CARD_BUS_ID(card), card->info.mcl_level);
1485 }
1486 
1487 static struct qeth_card *qeth_alloc_card(void)
1488 {
1489         struct qeth_card *card;
1490 
1491         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1492         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1493         if (!card)
1494                 goto out;
1495         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1496         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1497         if (!card->ip_tbd_list) {
1498                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1499                 goto out_card;
1500         }
1501         if (qeth_setup_channel(&card->read))
1502                 goto out_ip;
1503         if (qeth_setup_channel(&card->write))
1504                 goto out_channel;
1505         card->options.layer2 = -1;
1506         card->qeth_service_level.seq_print = qeth_core_sl_print;
1507         register_service_level(&card->qeth_service_level);
1508         return card;
1509 
1510 out_channel:
1511         qeth_clean_channel(&card->read);
1512 out_ip:
1513         kfree(card->ip_tbd_list);
1514 out_card:
1515         kfree(card);
1516 out:
1517         return NULL;
1518 }
1519 
1520 static int qeth_determine_card_type(struct qeth_card *card)
1521 {
1522         int i = 0;
1523 
1524         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1525 
1526         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1527         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1528         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1529                 if ((CARD_RDEV(card)->id.dev_type ==
1530                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1531                     (CARD_RDEV(card)->id.dev_model ==
1532                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1533                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1534                         card->qdio.no_out_queues =
1535                                 known_devices[i][QETH_QUEUE_NO_IND];
1536                         card->qdio.no_in_queues = 1;
1537                         card->info.is_multicast_different =
1538                                 known_devices[i][QETH_MULTICAST_IND];
1539                         qeth_update_from_chp_desc(card);
1540                         return 0;
1541                 }
1542                 i++;
1543         }
1544         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1545         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1546                 "unknown type\n");
1547         return -ENOENT;
1548 }
1549 
1550 static int qeth_clear_channel(struct qeth_channel *channel)
1551 {
1552         unsigned long flags;
1553         struct qeth_card *card;
1554         int rc;
1555 
1556         card = CARD_FROM_CDEV(channel->ccwdev);
1557         QETH_CARD_TEXT(card, 3, "clearch");
1558         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1559         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1560         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1561 
1562         if (rc)
1563                 return rc;
1564         rc = wait_event_interruptible_timeout(card->wait_q,
1565                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1566         if (rc == -ERESTARTSYS)
1567                 return rc;
1568         if (channel->state != CH_STATE_STOPPED)
1569                 return -ETIME;
1570         channel->state = CH_STATE_DOWN;
1571         return 0;
1572 }
1573 
1574 static int qeth_halt_channel(struct qeth_channel *channel)
1575 {
1576         unsigned long flags;
1577         struct qeth_card *card;
1578         int rc;
1579 
1580         card = CARD_FROM_CDEV(channel->ccwdev);
1581         QETH_CARD_TEXT(card, 3, "haltch");
1582         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1583         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1584         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1585 
1586         if (rc)
1587                 return rc;
1588         rc = wait_event_interruptible_timeout(card->wait_q,
1589                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1590         if (rc == -ERESTARTSYS)
1591                 return rc;
1592         if (channel->state != CH_STATE_HALTED)
1593                 return -ETIME;
1594         return 0;
1595 }
1596 
1597 static int qeth_halt_channels(struct qeth_card *card)
1598 {
1599         int rc1 = 0, rc2 = 0, rc3 = 0;
1600 
1601         QETH_CARD_TEXT(card, 3, "haltchs");
1602         rc1 = qeth_halt_channel(&card->read);
1603         rc2 = qeth_halt_channel(&card->write);
1604         rc3 = qeth_halt_channel(&card->data);
1605         if (rc1)
1606                 return rc1;
1607         if (rc2)
1608                 return rc2;
1609         return rc3;
1610 }
1611 
1612 static int qeth_clear_channels(struct qeth_card *card)
1613 {
1614         int rc1 = 0, rc2 = 0, rc3 = 0;
1615 
1616         QETH_CARD_TEXT(card, 3, "clearchs");
1617         rc1 = qeth_clear_channel(&card->read);
1618         rc2 = qeth_clear_channel(&card->write);
1619         rc3 = qeth_clear_channel(&card->data);
1620         if (rc1)
1621                 return rc1;
1622         if (rc2)
1623                 return rc2;
1624         return rc3;
1625 }
1626 
1627 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1628 {
1629         int rc = 0;
1630 
1631         QETH_CARD_TEXT(card, 3, "clhacrd");
1632 
1633         if (halt)
1634                 rc = qeth_halt_channels(card);
1635         if (rc)
1636                 return rc;
1637         return qeth_clear_channels(card);
1638 }
1639 
1640 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1641 {
1642         int rc = 0;
1643 
1644         QETH_CARD_TEXT(card, 3, "qdioclr");
1645         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1646                 QETH_QDIO_CLEANING)) {
1647         case QETH_QDIO_ESTABLISHED:
1648                 if (card->info.type == QETH_CARD_TYPE_IQD)
1649                         rc = qdio_shutdown(CARD_DDEV(card),
1650                                 QDIO_FLAG_CLEANUP_USING_HALT);
1651                 else
1652                         rc = qdio_shutdown(CARD_DDEV(card),
1653                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1654                 if (rc)
1655                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1656                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1657                 break;
1658         case QETH_QDIO_CLEANING:
1659                 return rc;
1660         default:
1661                 break;
1662         }
1663         rc = qeth_clear_halt_card(card, use_halt);
1664         if (rc)
1665                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1666         card->state = CARD_STATE_DOWN;
1667         return rc;
1668 }
1669 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1670 
1671 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1672                                int *length)
1673 {
1674         struct ciw *ciw;
1675         char *rcd_buf;
1676         int ret;
1677         struct qeth_channel *channel = &card->data;
1678         unsigned long flags;
1679 
1680         /*
1681          * scan for RCD command in extended SenseID data
1682          */
1683         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1684         if (!ciw || ciw->cmd == 0)
1685                 return -EOPNOTSUPP;
1686         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1687         if (!rcd_buf)
1688                 return -ENOMEM;
1689 
1690         channel->ccw.cmd_code = ciw->cmd;
1691         channel->ccw.cda = (__u32) __pa(rcd_buf);
1692         channel->ccw.count = ciw->count;
1693         channel->ccw.flags = CCW_FLAG_SLI;
1694         channel->state = CH_STATE_RCD;
1695         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1696         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1697                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1698                                        QETH_RCD_TIMEOUT);
1699         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1700         if (!ret)
1701                 wait_event(card->wait_q,
1702                            (channel->state == CH_STATE_RCD_DONE ||
1703                             channel->state == CH_STATE_DOWN));
1704         if (channel->state == CH_STATE_DOWN)
1705                 ret = -EIO;
1706         else
1707                 channel->state = CH_STATE_DOWN;
1708         if (ret) {
1709                 kfree(rcd_buf);
1710                 *buffer = NULL;
1711                 *length = 0;
1712         } else {
1713                 *length = ciw->count;
1714                 *buffer = rcd_buf;
1715         }
1716         return ret;
1717 }
1718 
1719 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1720 {
1721         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1722         card->info.chpid = prcd[30];
1723         card->info.unit_addr2 = prcd[31];
1724         card->info.cula = prcd[63];
1725         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1726                                (prcd[0x11] == _ascebc['M']));
1727 }
1728 
1729 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1730 {
1731         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1732 
1733         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1734             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1735                 card->info.blkt.time_total = 0;
1736                 card->info.blkt.inter_packet = 0;
1737                 card->info.blkt.inter_packet_jumbo = 0;
1738         } else {
1739                 card->info.blkt.time_total = 250;
1740                 card->info.blkt.inter_packet = 5;
1741                 card->info.blkt.inter_packet_jumbo = 15;
1742         }
1743 }
1744 
1745 static void qeth_init_tokens(struct qeth_card *card)
1746 {
1747         card->token.issuer_rm_w = 0x00010103UL;
1748         card->token.cm_filter_w = 0x00010108UL;
1749         card->token.cm_connection_w = 0x0001010aUL;
1750         card->token.ulp_filter_w = 0x0001010bUL;
1751         card->token.ulp_connection_w = 0x0001010dUL;
1752 }
1753 
1754 static void qeth_init_func_level(struct qeth_card *card)
1755 {
1756         switch (card->info.type) {
1757         case QETH_CARD_TYPE_IQD:
1758                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1759                 break;
1760         case QETH_CARD_TYPE_OSD:
1761         case QETH_CARD_TYPE_OSN:
1762                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1763                 break;
1764         default:
1765                 break;
1766         }
1767 }
1768 
1769 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1770                 void (*idx_reply_cb)(struct qeth_channel *,
1771                         struct qeth_cmd_buffer *))
1772 {
1773         struct qeth_cmd_buffer *iob;
1774         unsigned long flags;
1775         int rc;
1776         struct qeth_card *card;
1777 
1778         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1779         card = CARD_FROM_CDEV(channel->ccwdev);
1780         iob = qeth_get_buffer(channel);
1781         iob->callback = idx_reply_cb;
1782         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1783         channel->ccw.count = QETH_BUFSIZE;
1784         channel->ccw.cda = (__u32) __pa(iob->data);
1785 
1786         wait_event(card->wait_q,
1787                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1788         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1789         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1790         rc = ccw_device_start(channel->ccwdev,
1791                               &channel->ccw, (addr_t) iob, 0, 0);
1792         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1793 
1794         if (rc) {
1795                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1796                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1797                 atomic_set(&channel->irq_pending, 0);
1798                 wake_up(&card->wait_q);
1799                 return rc;
1800         }
1801         rc = wait_event_interruptible_timeout(card->wait_q,
1802                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1803         if (rc == -ERESTARTSYS)
1804                 return rc;
1805         if (channel->state != CH_STATE_UP) {
1806                 rc = -ETIME;
1807                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1808                 qeth_clear_cmd_buffers(channel);
1809         } else
1810                 rc = 0;
1811         return rc;
1812 }
1813 
1814 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1815                 void (*idx_reply_cb)(struct qeth_channel *,
1816                         struct qeth_cmd_buffer *))
1817 {
1818         struct qeth_card *card;
1819         struct qeth_cmd_buffer *iob;
1820         unsigned long flags;
1821         __u16 temp;
1822         __u8 tmp;
1823         int rc;
1824         struct ccw_dev_id temp_devid;
1825 
1826         card = CARD_FROM_CDEV(channel->ccwdev);
1827 
1828         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1829 
1830         iob = qeth_get_buffer(channel);
1831         iob->callback = idx_reply_cb;
1832         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1833         channel->ccw.count = IDX_ACTIVATE_SIZE;
1834         channel->ccw.cda = (__u32) __pa(iob->data);
1835         if (channel == &card->write) {
1836                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1837                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1838                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1839                 card->seqno.trans_hdr++;
1840         } else {
1841                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1842                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1843                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1844         }
1845         tmp = ((__u8)card->info.portno) | 0x80;
1846         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1847         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1848                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1849         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1850                &card->info.func_level, sizeof(__u16));
1851         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1852         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1853         temp = (card->info.cula << 8) + card->info.unit_addr2;
1854         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1855 
1856         wait_event(card->wait_q,
1857                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1858         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1859         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1860         rc = ccw_device_start(channel->ccwdev,
1861                               &channel->ccw, (addr_t) iob, 0, 0);
1862         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1863 
1864         if (rc) {
1865                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1866                         rc);
1867                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1868                 atomic_set(&channel->irq_pending, 0);
1869                 wake_up(&card->wait_q);
1870                 return rc;
1871         }
1872         rc = wait_event_interruptible_timeout(card->wait_q,
1873                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1874         if (rc == -ERESTARTSYS)
1875                 return rc;
1876         if (channel->state != CH_STATE_ACTIVATING) {
1877                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1878                         " failed to recover an error on the device\n");
1879                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1880                         dev_name(&channel->ccwdev->dev));
1881                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1882                 qeth_clear_cmd_buffers(channel);
1883                 return -ETIME;
1884         }
1885         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1886 }
1887 
1888 static int qeth_peer_func_level(int level)
1889 {
1890         if ((level & 0xff) == 8)
1891                 return (level & 0xff) + 0x400;
1892         if (((level >> 8) & 3) == 1)
1893                 return (level & 0xff) + 0x200;
1894         return level;
1895 }
1896 
1897 static void qeth_idx_write_cb(struct qeth_channel *channel,
1898                 struct qeth_cmd_buffer *iob)
1899 {
1900         struct qeth_card *card;
1901         __u16 temp;
1902 
1903         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1904 
1905         if (channel->state == CH_STATE_DOWN) {
1906                 channel->state = CH_STATE_ACTIVATING;
1907                 goto out;
1908         }
1909         card = CARD_FROM_CDEV(channel->ccwdev);
1910 
1911         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1912                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1913                         dev_err(&card->write.ccwdev->dev,
1914                                 "The adapter is used exclusively by another "
1915                                 "host\n");
1916                 else
1917                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1918                                 " negative reply\n",
1919                                 dev_name(&card->write.ccwdev->dev));
1920                 goto out;
1921         }
1922         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1923         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1924                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1925                         "function level mismatch (sent: 0x%x, received: "
1926                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1927                         card->info.func_level, temp);
1928                 goto out;
1929         }
1930         channel->state = CH_STATE_UP;
1931 out:
1932         qeth_release_buffer(channel, iob);
1933 }
1934 
1935 static void qeth_idx_read_cb(struct qeth_channel *channel,
1936                 struct qeth_cmd_buffer *iob)
1937 {
1938         struct qeth_card *card;
1939         __u16 temp;
1940 
1941         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1942         if (channel->state == CH_STATE_DOWN) {
1943                 channel->state = CH_STATE_ACTIVATING;
1944                 goto out;
1945         }
1946 
1947         card = CARD_FROM_CDEV(channel->ccwdev);
1948         if (qeth_check_idx_response(card, iob->data))
1949                         goto out;
1950 
1951         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1952                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1953                 case QETH_IDX_ACT_ERR_EXCL:
1954                         dev_err(&card->write.ccwdev->dev,
1955                                 "The adapter is used exclusively by another "
1956                                 "host\n");
1957                         break;
1958                 case QETH_IDX_ACT_ERR_AUTH:
1959                 case QETH_IDX_ACT_ERR_AUTH_USER:
1960                         dev_err(&card->read.ccwdev->dev,
1961                                 "Setting the device online failed because of "
1962                                 "insufficient authorization\n");
1963                         break;
1964                 default:
1965                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1966                                 " negative reply\n",
1967                                 dev_name(&card->read.ccwdev->dev));
1968                 }
1969                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1970                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1971                 goto out;
1972         }
1973 
1974 /**
1975  *  * temporary fix for microcode bug
1976  *   * to revert it,replace OR by AND
1977  *    */
1978         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1979              (card->info.type == QETH_CARD_TYPE_OSD))
1980                 card->info.portname_required = 1;
1981 
1982         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1983         if (temp != qeth_peer_func_level(card->info.func_level)) {
1984                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1985                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1986                         dev_name(&card->read.ccwdev->dev),
1987                         card->info.func_level, temp);
1988                 goto out;
1989         }
1990         memcpy(&card->token.issuer_rm_r,
1991                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1992                QETH_MPC_TOKEN_LENGTH);
1993         memcpy(&card->info.mcl_level[0],
1994                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1995         channel->state = CH_STATE_UP;
1996 out:
1997         qeth_release_buffer(channel, iob);
1998 }
1999 
2000 void qeth_prepare_control_data(struct qeth_card *card, int len,
2001                 struct qeth_cmd_buffer *iob)
2002 {
2003         qeth_setup_ccw(&card->write, iob->data, len);
2004         iob->callback = qeth_release_buffer;
2005 
2006         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2007                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2008         card->seqno.trans_hdr++;
2009         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2010                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2011         card->seqno.pdu_hdr++;
2012         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2013                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2014         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2015 }
2016 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2017 
2018 int qeth_send_control_data(struct qeth_card *card, int len,
2019                 struct qeth_cmd_buffer *iob,
2020                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2021                         unsigned long),
2022                 void *reply_param)
2023 {
2024         int rc;
2025         unsigned long flags;
2026         struct qeth_reply *reply = NULL;
2027         unsigned long timeout, event_timeout;
2028         struct qeth_ipa_cmd *cmd;
2029 
2030         QETH_CARD_TEXT(card, 2, "sendctl");
2031 
2032         if (card->read_or_write_problem) {
2033                 qeth_release_buffer(iob->channel, iob);
2034                 return -EIO;
2035         }
2036         reply = qeth_alloc_reply(card);
2037         if (!reply) {
2038                 return -ENOMEM;
2039         }
2040         reply->callback = reply_cb;
2041         reply->param = reply_param;
2042         if (card->state == CARD_STATE_DOWN)
2043                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2044         else
2045                 reply->seqno = card->seqno.ipa++;
2046         init_waitqueue_head(&reply->wait_q);
2047         spin_lock_irqsave(&card->lock, flags);
2048         list_add_tail(&reply->list, &card->cmd_waiter_list);
2049         spin_unlock_irqrestore(&card->lock, flags);
2050         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2051 
2052         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2053         qeth_prepare_control_data(card, len, iob);
2054 
2055         if (IS_IPA(iob->data))
2056                 event_timeout = QETH_IPA_TIMEOUT;
2057         else
2058                 event_timeout = QETH_TIMEOUT;
2059         timeout = jiffies + event_timeout;
2060 
2061         QETH_CARD_TEXT(card, 6, "noirqpnd");
2062         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2063         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2064                               (addr_t) iob, 0, 0);
2065         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2066         if (rc) {
2067                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2068                         "ccw_device_start rc = %i\n",
2069                         dev_name(&card->write.ccwdev->dev), rc);
2070                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2071                 spin_lock_irqsave(&card->lock, flags);
2072                 list_del_init(&reply->list);
2073                 qeth_put_reply(reply);
2074                 spin_unlock_irqrestore(&card->lock, flags);
2075                 qeth_release_buffer(iob->channel, iob);
2076                 atomic_set(&card->write.irq_pending, 0);
2077                 wake_up(&card->wait_q);
2078                 return rc;
2079         }
2080 
2081         /* we have only one long running ipassist, since we can ensure
2082            process context of this command we can sleep */
2083         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2084         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2085             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2086                 if (!wait_event_timeout(reply->wait_q,
2087                     atomic_read(&reply->received), event_timeout))
2088                         goto time_err;
2089         } else {
2090                 while (!atomic_read(&reply->received)) {
2091                         if (time_after(jiffies, timeout))
2092                                 goto time_err;
2093                         cpu_relax();
2094                 }
2095         }
2096 
2097         if (reply->rc == -EIO)
2098                 goto error;
2099         rc = reply->rc;
2100         qeth_put_reply(reply);
2101         return rc;
2102 
2103 time_err:
2104         reply->rc = -ETIME;
2105         spin_lock_irqsave(&reply->card->lock, flags);
2106         list_del_init(&reply->list);
2107         spin_unlock_irqrestore(&reply->card->lock, flags);
2108         atomic_inc(&reply->received);
2109 error:
2110         atomic_set(&card->write.irq_pending, 0);
2111         qeth_release_buffer(iob->channel, iob);
2112         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2113         rc = reply->rc;
2114         qeth_put_reply(reply);
2115         return rc;
2116 }
2117 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2118 
2119 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2120                 unsigned long data)
2121 {
2122         struct qeth_cmd_buffer *iob;
2123 
2124         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2125 
2126         iob = (struct qeth_cmd_buffer *) data;
2127         memcpy(&card->token.cm_filter_r,
2128                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2129                QETH_MPC_TOKEN_LENGTH);
2130         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2131         return 0;
2132 }
2133 
2134 static int qeth_cm_enable(struct qeth_card *card)
2135 {
2136         int rc;
2137         struct qeth_cmd_buffer *iob;
2138 
2139         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2140 
2141         iob = qeth_wait_for_buffer(&card->write);
2142         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2143         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2144                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2145         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2146                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2147 
2148         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2149                                     qeth_cm_enable_cb, NULL);
2150         return rc;
2151 }
2152 
2153 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2154                 unsigned long data)
2155 {
2156 
2157         struct qeth_cmd_buffer *iob;
2158 
2159         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2160 
2161         iob = (struct qeth_cmd_buffer *) data;
2162         memcpy(&card->token.cm_connection_r,
2163                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2164                QETH_MPC_TOKEN_LENGTH);
2165         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2166         return 0;
2167 }
2168 
2169 static int qeth_cm_setup(struct qeth_card *card)
2170 {
2171         int rc;
2172         struct qeth_cmd_buffer *iob;
2173 
2174         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2175 
2176         iob = qeth_wait_for_buffer(&card->write);
2177         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2178         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2179                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2180         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2181                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2182         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2183                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2184         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2185                                     qeth_cm_setup_cb, NULL);
2186         return rc;
2187 
2188 }
2189 
2190 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2191 {
2192         switch (card->info.type) {
2193         case QETH_CARD_TYPE_UNKNOWN:
2194                 return 1500;
2195         case QETH_CARD_TYPE_IQD:
2196                 return card->info.max_mtu;
2197         case QETH_CARD_TYPE_OSD:
2198                 switch (card->info.link_type) {
2199                 case QETH_LINK_TYPE_HSTR:
2200                 case QETH_LINK_TYPE_LANE_TR:
2201                         return 2000;
2202                 default:
2203                         return card->options.layer2 ? 1500 : 1492;
2204                 }
2205         case QETH_CARD_TYPE_OSM:
2206         case QETH_CARD_TYPE_OSX:
2207                 return card->options.layer2 ? 1500 : 1492;
2208         default:
2209                 return 1500;
2210         }
2211 }
2212 
2213 static inline int qeth_get_mtu_outof_framesize(int framesize)
2214 {
2215         switch (framesize) {
2216         case 0x4000:
2217                 return 8192;
2218         case 0x6000:
2219                 return 16384;
2220         case 0xa000:
2221                 return 32768;
2222         case 0xffff:
2223                 return 57344;
2224         default:
2225                 return 0;
2226         }
2227 }
2228 
2229 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2230 {
2231         switch (card->info.type) {
2232         case QETH_CARD_TYPE_OSD:
2233         case QETH_CARD_TYPE_OSM:
2234         case QETH_CARD_TYPE_OSX:
2235         case QETH_CARD_TYPE_IQD:
2236                 return ((mtu >= 576) &&
2237                         (mtu <= card->info.max_mtu));
2238         case QETH_CARD_TYPE_OSN:
2239         case QETH_CARD_TYPE_UNKNOWN:
2240         default:
2241                 return 1;
2242         }
2243 }
2244 
2245 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2246                 unsigned long data)
2247 {
2248 
2249         __u16 mtu, framesize;
2250         __u16 len;
2251         __u8 link_type;
2252         struct qeth_cmd_buffer *iob;
2253 
2254         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2255 
2256         iob = (struct qeth_cmd_buffer *) data;
2257         memcpy(&card->token.ulp_filter_r,
2258                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2259                QETH_MPC_TOKEN_LENGTH);
2260         if (card->info.type == QETH_CARD_TYPE_IQD) {
2261                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2262                 mtu = qeth_get_mtu_outof_framesize(framesize);
2263                 if (!mtu) {
2264                         iob->rc = -EINVAL;
2265                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2266                         return 0;
2267                 }
2268                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2269                         /* frame size has changed */
2270                         if (card->dev &&
2271                             ((card->dev->mtu == card->info.initial_mtu) ||
2272                              (card->dev->mtu > mtu)))
2273                                 card->dev->mtu = mtu;
2274                         qeth_free_qdio_buffers(card);
2275                 }
2276                 card->info.initial_mtu = mtu;
2277                 card->info.max_mtu = mtu;
2278                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2279         } else {
2280                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2281                         iob->data);
2282                 card->info.initial_mtu = min(card->info.max_mtu,
2283                                         qeth_get_initial_mtu_for_card(card));
2284                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2285         }
2286 
2287         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2288         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2289                 memcpy(&link_type,
2290                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2291                 card->info.link_type = link_type;
2292         } else
2293                 card->info.link_type = 0;
2294         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2295         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2296         return 0;
2297 }
2298 
2299 static int qeth_ulp_enable(struct qeth_card *card)
2300 {
2301         int rc;
2302         char prot_type;
2303         struct qeth_cmd_buffer *iob;
2304 
2305         /*FIXME: trace view callbacks*/
2306         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2307 
2308         iob = qeth_wait_for_buffer(&card->write);
2309         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2310 
2311         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2312                 (__u8) card->info.portno;
2313         if (card->options.layer2)
2314                 if (card->info.type == QETH_CARD_TYPE_OSN)
2315                         prot_type = QETH_PROT_OSN2;
2316                 else
2317                         prot_type = QETH_PROT_LAYER2;
2318         else
2319                 prot_type = QETH_PROT_TCPIP;
2320 
2321         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2322         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2323                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2324         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2325                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2326         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2327                card->info.portname, 9);
2328         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2329                                     qeth_ulp_enable_cb, NULL);
2330         return rc;
2331 
2332 }
2333 
2334 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2335                 unsigned long data)
2336 {
2337         struct qeth_cmd_buffer *iob;
2338 
2339         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2340 
2341         iob = (struct qeth_cmd_buffer *) data;
2342         memcpy(&card->token.ulp_connection_r,
2343                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2344                QETH_MPC_TOKEN_LENGTH);
2345         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2346                      3)) {
2347                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2348                 dev_err(&card->gdev->dev, "A connection could not be "
2349                         "established because of an OLM limit\n");
2350                 iob->rc = -EMLINK;
2351         }
2352         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2353         return 0;
2354 }
2355 
2356 static int qeth_ulp_setup(struct qeth_card *card)
2357 {
2358         int rc;
2359         __u16 temp;
2360         struct qeth_cmd_buffer *iob;
2361         struct ccw_dev_id dev_id;
2362 
2363         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2364 
2365         iob = qeth_wait_for_buffer(&card->write);
2366         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2367 
2368         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2369                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2370         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2371                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2372         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2373                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2374 
2375         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2376         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2377         temp = (card->info.cula << 8) + card->info.unit_addr2;
2378         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2379         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2380                                     qeth_ulp_setup_cb, NULL);
2381         return rc;
2382 }
2383 
2384 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2385 {
2386         int rc;
2387         struct qeth_qdio_out_buffer *newbuf;
2388 
2389         rc = 0;
2390         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2391         if (!newbuf) {
2392                 rc = -ENOMEM;
2393                 goto out;
2394         }
2395         newbuf->buffer = &q->qdio_bufs[bidx];
2396         skb_queue_head_init(&newbuf->skb_list);
2397         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2398         newbuf->q = q;
2399         newbuf->aob = NULL;
2400         newbuf->next_pending = q->bufs[bidx];
2401         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2402         q->bufs[bidx] = newbuf;
2403         if (q->bufstates) {
2404                 q->bufstates[bidx].user = newbuf;
2405                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2406                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2407                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2408                                 (long) newbuf->next_pending);
2409         }
2410 out:
2411         return rc;
2412 }
2413 
2414 
2415 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2416 {
2417         int i, j;
2418 
2419         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2420 
2421         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2422                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2423                 return 0;
2424 
2425         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2426                                    GFP_KERNEL);
2427         if (!card->qdio.in_q)
2428                 goto out_nomem;
2429         QETH_DBF_TEXT(SETUP, 2, "inq");
2430         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2431         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2432         /* give inbound qeth_qdio_buffers their qdio_buffers */
2433         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2434                 card->qdio.in_q->bufs[i].buffer =
2435                         &card->qdio.in_q->qdio_bufs[i];
2436                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2437         }
2438         /* inbound buffer pool */
2439         if (qeth_alloc_buffer_pool(card))
2440                 goto out_freeinq;
2441 
2442         /* outbound */
2443         card->qdio.out_qs =
2444                 kzalloc(card->qdio.no_out_queues *
2445                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2446         if (!card->qdio.out_qs)
2447                 goto out_freepool;
2448         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2449                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2450                                                GFP_KERNEL);
2451                 if (!card->qdio.out_qs[i])
2452                         goto out_freeoutq;
2453                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2454                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2455                 card->qdio.out_qs[i]->queue_no = i;
2456                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2457                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2458                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2459                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2460                                 goto out_freeoutqbufs;
2461                 }
2462         }
2463 
2464         /* completion */
2465         if (qeth_alloc_cq(card))
2466                 goto out_freeoutq;
2467 
2468         return 0;
2469 
2470 out_freeoutqbufs:
2471         while (j > 0) {
2472                 --j;
2473                 kmem_cache_free(qeth_qdio_outbuf_cache,
2474                                 card->qdio.out_qs[i]->bufs[j]);
2475                 card->qdio.out_qs[i]->bufs[j] = NULL;
2476         }
2477 out_freeoutq:
2478         while (i > 0) {
2479                 kfree(card->qdio.out_qs[--i]);
2480                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2481         }
2482         kfree(card->qdio.out_qs);
2483         card->qdio.out_qs = NULL;
2484 out_freepool:
2485         qeth_free_buffer_pool(card);
2486 out_freeinq:
2487         kfree(card->qdio.in_q);
2488         card->qdio.in_q = NULL;
2489 out_nomem:
2490         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2491         return -ENOMEM;
2492 }
2493 
2494 static void qeth_create_qib_param_field(struct qeth_card *card,
2495                 char *param_field)
2496 {
2497 
2498         param_field[0] = _ascebc['P'];
2499         param_field[1] = _ascebc['C'];
2500         param_field[2] = _ascebc['I'];
2501         param_field[3] = _ascebc['T'];
2502         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2503         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2504         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2505 }
2506 
2507 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2508                 char *param_field)
2509 {
2510         param_field[16] = _ascebc['B'];
2511         param_field[17] = _ascebc['L'];
2512         param_field[18] = _ascebc['K'];
2513         param_field[19] = _ascebc['T'];
2514         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2515         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2516         *((unsigned int *) (&param_field[28])) =
2517                 card->info.blkt.inter_packet_jumbo;
2518 }
2519 
2520 static int qeth_qdio_activate(struct qeth_card *card)
2521 {
2522         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2523         return qdio_activate(CARD_DDEV(card));
2524 }
2525 
2526 static int qeth_dm_act(struct qeth_card *card)
2527 {
2528         int rc;
2529         struct qeth_cmd_buffer *iob;
2530 
2531         QETH_DBF_TEXT(SETUP, 2, "dmact");
2532 
2533         iob = qeth_wait_for_buffer(&card->write);
2534         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2535 
2536         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2537                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2538         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2539                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2540         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2541         return rc;
2542 }
2543 
2544 static int qeth_mpc_initialize(struct qeth_card *card)
2545 {
2546         int rc;
2547 
2548         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2549 
2550         rc = qeth_issue_next_read(card);
2551         if (rc) {
2552                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2553                 return rc;
2554         }
2555         rc = qeth_cm_enable(card);
2556         if (rc) {
2557                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2558                 goto out_qdio;
2559         }
2560         rc = qeth_cm_setup(card);
2561         if (rc) {
2562                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2563                 goto out_qdio;
2564         }
2565         rc = qeth_ulp_enable(card);
2566         if (rc) {
2567                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2568                 goto out_qdio;
2569         }
2570         rc = qeth_ulp_setup(card);
2571         if (rc) {
2572                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2573                 goto out_qdio;
2574         }
2575         rc = qeth_alloc_qdio_buffers(card);
2576         if (rc) {
2577                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2578                 goto out_qdio;
2579         }
2580         rc = qeth_qdio_establish(card);
2581         if (rc) {
2582                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2583                 qeth_free_qdio_buffers(card);
2584                 goto out_qdio;
2585         }
2586         rc = qeth_qdio_activate(card);
2587         if (rc) {
2588                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2589                 goto out_qdio;
2590         }
2591         rc = qeth_dm_act(card);
2592         if (rc) {
2593                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2594                 goto out_qdio;
2595         }
2596 
2597         return 0;
2598 out_qdio:
2599         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2600         qdio_free(CARD_DDEV(card));
2601         return rc;
2602 }
2603 
2604 static void qeth_print_status_with_portname(struct qeth_card *card)
2605 {
2606         char dbf_text[15];
2607         int i;
2608 
2609         sprintf(dbf_text, "%s", card->info.portname + 1);
2610         for (i = 0; i < 8; i++)
2611                 dbf_text[i] =
2612                         (char) _ebcasc[(__u8) dbf_text[i]];
2613         dbf_text[8] = 0;
2614         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2615                "with link type %s (portname: %s)\n",
2616                qeth_get_cardname(card),
2617                (card->info.mcl_level[0]) ? " (level: " : "",
2618                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2619                (card->info.mcl_level[0]) ? ")" : "",
2620                qeth_get_cardname_short(card),
2621                dbf_text);
2622 
2623 }
2624 
2625 static void qeth_print_status_no_portname(struct qeth_card *card)
2626 {
2627         if (card->info.portname[0])
2628                 dev_info(&card->gdev->dev, "Device is a%s "
2629                        "card%s%s%s\nwith link type %s "
2630                        "(no portname needed by interface).\n",
2631                        qeth_get_cardname(card),
2632                        (card->info.mcl_level[0]) ? " (level: " : "",
2633                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2634                        (card->info.mcl_level[0]) ? ")" : "",
2635                        qeth_get_cardname_short(card));
2636         else
2637                 dev_info(&card->gdev->dev, "Device is a%s "
2638                        "card%s%s%s\nwith link type %s.\n",
2639                        qeth_get_cardname(card),
2640                        (card->info.mcl_level[0]) ? " (level: " : "",
2641                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2642                        (card->info.mcl_level[0]) ? ")" : "",
2643                        qeth_get_cardname_short(card));
2644 }
2645 
2646 void qeth_print_status_message(struct qeth_card *card)
2647 {
2648         switch (card->info.type) {
2649         case QETH_CARD_TYPE_OSD:
2650         case QETH_CARD_TYPE_OSM:
2651         case QETH_CARD_TYPE_OSX:
2652                 /* VM will use a non-zero first character
2653                  * to indicate a HiperSockets like reporting
2654                  * of the level OSA sets the first character to zero
2655                  * */
2656                 if (!card->info.mcl_level[0]) {
2657                         sprintf(card->info.mcl_level, "%02x%02x",
2658                                 card->info.mcl_level[2],
2659                                 card->info.mcl_level[3]);
2660 
2661                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2662                         break;
2663                 }
2664                 /* fallthrough */
2665         case QETH_CARD_TYPE_IQD:
2666                 if ((card->info.guestlan) ||
2667                     (card->info.mcl_level[0] & 0x80)) {
2668                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2669                                 card->info.mcl_level[0]];
2670                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2671                                 card->info.mcl_level[1]];
2672                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2673                                 card->info.mcl_level[2]];
2674                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2675                                 card->info.mcl_level[3]];
2676                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2677                 }
2678                 break;
2679         default:
2680                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2681         }
2682         if (card->info.portname_required)
2683                 qeth_print_status_with_portname(card);
2684         else
2685                 qeth_print_status_no_portname(card);
2686 }
2687 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2688 
2689 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2690 {
2691         struct qeth_buffer_pool_entry *entry;
2692 
2693         QETH_CARD_TEXT(card, 5, "inwrklst");
2694 
2695         list_for_each_entry(entry,
2696                             &card->qdio.init_pool.entry_list, init_list) {
2697                 qeth_put_buffer_pool_entry(card, entry);
2698         }
2699 }
2700 
2701 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2702                 struct qeth_card *card)
2703 {
2704         struct list_head *plh;
2705         struct qeth_buffer_pool_entry *entry;
2706         int i, free;
2707         struct page *page;
2708 
2709         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2710                 return NULL;
2711 
2712         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2713                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2714                 free = 1;
2715                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2716                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2717                                 free = 0;
2718                                 break;
2719                         }
2720                 }
2721                 if (free) {
2722                         list_del_init(&entry->list);
2723                         return entry;
2724                 }
2725         }
2726 
2727         /* no free buffer in pool so take first one and swap pages */
2728         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2729                         struct qeth_buffer_pool_entry, list);
2730         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2731                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2732                         page = alloc_page(GFP_ATOMIC);
2733                         if (!page) {
2734                                 return NULL;
2735                         } else {
2736                                 free_page((unsigned long)entry->elements[i]);
2737                                 entry->elements[i] = page_address(page);
2738                                 if (card->options.performance_stats)
2739                                         card->perf_stats.sg_alloc_page_rx++;
2740                         }
2741                 }
2742         }
2743         list_del_init(&entry->list);
2744         return entry;
2745 }
2746 
2747 static int qeth_init_input_buffer(struct qeth_card *card,
2748                 struct qeth_qdio_buffer *buf)
2749 {
2750         struct qeth_buffer_pool_entry *pool_entry;
2751         int i;
2752 
2753         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2754                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2755                 if (!buf->rx_skb)
2756                         return 1;
2757         }
2758 
2759         pool_entry = qeth_find_free_buffer_pool_entry(card);
2760         if (!pool_entry)
2761                 return 1;
2762 
2763         /*
2764          * since the buffer is accessed only from the input_tasklet
2765          * there shouldn't be a need to synchronize; also, since we use
2766          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2767          * buffers
2768          */
2769 
2770         buf->pool_entry = pool_entry;
2771         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2772                 buf->buffer->element[i].length = PAGE_SIZE;
2773                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2774                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2775                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2776                 else
2777                         buf->buffer->element[i].eflags = 0;
2778                 buf->buffer->element[i].sflags = 0;
2779         }
2780         return 0;
2781 }
2782 
2783 int qeth_init_qdio_queues(struct qeth_card *card)
2784 {
2785         int i, j;
2786         int rc;
2787 
2788         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2789 
2790         /* inbound queue */
2791         memset(card->qdio.in_q->qdio_bufs, 0,
2792                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2793         qeth_initialize_working_pool_list(card);
2794         /*give only as many buffers to hardware as we have buffer pool entries*/
2795         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2796                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2797         card->qdio.in_q->next_buf_to_init =
2798                 card->qdio.in_buf_pool.buf_count - 1;
2799         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2800                      card->qdio.in_buf_pool.buf_count - 1);
2801         if (rc) {
2802                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2803                 return rc;
2804         }
2805 
2806         /* completion */
2807         rc = qeth_cq_init(card);
2808         if (rc) {
2809                 return rc;
2810         }
2811 
2812         /* outbound queue */
2813         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2814                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2815                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2816                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2817                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2818                                         card->qdio.out_qs[i]->bufs[j],
2819                                         QETH_QDIO_BUF_EMPTY);
2820                 }
2821                 card->qdio.out_qs[i]->card = card;
2822                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2823                 card->qdio.out_qs[i]->do_pack = 0;
2824                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2825                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2826                 atomic_set(&card->qdio.out_qs[i]->state,
2827                            QETH_OUT_Q_UNLOCKED);
2828         }
2829         return 0;
2830 }
2831 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2832 
2833 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2834 {
2835         switch (link_type) {
2836         case QETH_LINK_TYPE_HSTR:
2837                 return 2;
2838         default:
2839                 return 1;
2840         }
2841 }
2842 
2843 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2844                 struct qeth_ipa_cmd *cmd, __u8 command,
2845                 enum qeth_prot_versions prot)
2846 {
2847         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2848         cmd->hdr.command = command;
2849         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2850         cmd->hdr.seqno = card->seqno.ipa;
2851         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2852         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2853         if (card->options.layer2)
2854                 cmd->hdr.prim_version_no = 2;
2855         else
2856                 cmd->hdr.prim_version_no = 1;
2857         cmd->hdr.param_count = 1;
2858         cmd->hdr.prot_version = prot;
2859         cmd->hdr.ipa_supported = 0;
2860         cmd->hdr.ipa_enabled = 0;
2861 }
2862 
2863 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2864                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2865 {
2866         struct qeth_cmd_buffer *iob;
2867         struct qeth_ipa_cmd *cmd;
2868 
2869         iob = qeth_wait_for_buffer(&card->write);
2870         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2871         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2872 
2873         return iob;
2874 }
2875 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2876 
2877 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2878                 char prot_type)
2879 {
2880         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2881         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2882         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2883                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2884 }
2885 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2886 
2887 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2888                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2889                         unsigned long),
2890                 void *reply_param)
2891 {
2892         int rc;
2893         char prot_type;
2894 
2895         QETH_CARD_TEXT(card, 4, "sendipa");
2896 
2897         if (card->options.layer2)
2898                 if (card->info.type == QETH_CARD_TYPE_OSN)
2899                         prot_type = QETH_PROT_OSN2;
2900                 else
2901                         prot_type = QETH_PROT_LAYER2;
2902         else
2903                 prot_type = QETH_PROT_TCPIP;
2904         qeth_prepare_ipa_cmd(card, iob, prot_type);
2905         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2906                                                 iob, reply_cb, reply_param);
2907         if (rc == -ETIME) {
2908                 qeth_clear_ipacmd_list(card);
2909                 qeth_schedule_recovery(card);
2910         }
2911         return rc;
2912 }
2913 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2914 
2915 int qeth_send_startlan(struct qeth_card *card)
2916 {
2917         int rc;
2918         struct qeth_cmd_buffer *iob;
2919 
2920         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2921 
2922         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2923         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2924         return rc;
2925 }
2926 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2927 
2928 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2929                 struct qeth_reply *reply, unsigned long data)
2930 {
2931         struct qeth_ipa_cmd *cmd;
2932 
2933         QETH_CARD_TEXT(card, 4, "defadpcb");
2934 
2935         cmd = (struct qeth_ipa_cmd *) data;
2936         if (cmd->hdr.return_code == 0)
2937                 cmd->hdr.return_code =
2938                         cmd->data.setadapterparms.hdr.return_code;
2939         return 0;
2940 }
2941 
2942 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2943                 struct qeth_reply *reply, unsigned long data)
2944 {
2945         struct qeth_ipa_cmd *cmd;
2946 
2947         QETH_CARD_TEXT(card, 3, "quyadpcb");
2948 
2949         cmd = (struct qeth_ipa_cmd *) data;
2950         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2951                 card->info.link_type =
2952                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2953                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2954         }
2955         card->options.adp.supported_funcs =
2956                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2957         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2958 }
2959 
2960 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2961                 __u32 command, __u32 cmdlen)
2962 {
2963         struct qeth_cmd_buffer *iob;
2964         struct qeth_ipa_cmd *cmd;
2965 
2966         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2967                                      QETH_PROT_IPV4);
2968         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2969         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2970         cmd->data.setadapterparms.hdr.command_code = command;
2971         cmd->data.setadapterparms.hdr.used_total = 1;
2972         cmd->data.setadapterparms.hdr.seq_no = 1;
2973 
2974         return iob;
2975 }
2976 
2977 int qeth_query_setadapterparms(struct qeth_card *card)
2978 {
2979         int rc;
2980         struct qeth_cmd_buffer *iob;
2981 
2982         QETH_CARD_TEXT(card, 3, "queryadp");
2983         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2984                                    sizeof(struct qeth_ipacmd_setadpparms));
2985         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2986         return rc;
2987 }
2988 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2989 
2990 static int qeth_query_ipassists_cb(struct qeth_card *card,
2991                 struct qeth_reply *reply, unsigned long data)
2992 {
2993         struct qeth_ipa_cmd *cmd;
2994 
2995         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2996 
2997         cmd = (struct qeth_ipa_cmd *) data;
2998 
2999         switch (cmd->hdr.return_code) {
3000         case IPA_RC_NOTSUPP:
3001         case IPA_RC_L2_UNSUPPORTED_CMD:
3002                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3003                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3004                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3005                 return -0;
3006         default:
3007                 if (cmd->hdr.return_code) {
3008                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3009                                                 "rc=%d\n",
3010                                                 dev_name(&card->gdev->dev),
3011                                                 cmd->hdr.return_code);
3012                         return 0;
3013                 }
3014         }
3015 
3016         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3017                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3018                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3019         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3020                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3021                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3022         } else
3023                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3024                                         "\n", dev_name(&card->gdev->dev));
3025         return 0;
3026 }
3027 
3028 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3029 {
3030         int rc;
3031         struct qeth_cmd_buffer *iob;
3032 
3033         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3034         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3035         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3036         return rc;
3037 }
3038 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3039 
3040 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3041                 struct qeth_reply *reply, unsigned long data)
3042 {
3043         struct qeth_ipa_cmd *cmd;
3044         __u16 rc;
3045 
3046         cmd = (struct qeth_ipa_cmd *)data;
3047         rc = cmd->hdr.return_code;
3048         if (rc)
3049                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3050         else
3051                 card->info.diagass_support = cmd->data.diagass.ext;
3052         return 0;
3053 }
3054 
3055 static int qeth_query_setdiagass(struct qeth_card *card)
3056 {
3057         struct qeth_cmd_buffer *iob;
3058         struct qeth_ipa_cmd    *cmd;
3059 
3060         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3061         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3062         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3063         cmd->data.diagass.subcmd_len = 16;
3064         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3065         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3066 }
3067 
3068 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3069 {
3070         unsigned long info = get_zeroed_page(GFP_KERNEL);
3071         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3072         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3073         struct ccw_dev_id ccwid;
3074         int level;
3075 
3076         tid->chpid = card->info.chpid;
3077         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3078         tid->ssid = ccwid.ssid;
3079         tid->devno = ccwid.devno;
3080         if (!info)
3081                 return;
3082         level = stsi(NULL, 0, 0, 0);
3083         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3084                 tid->lparnr = info222->lpar_number;
3085         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3086                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3087                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3088         }
3089         free_page(info);
3090         return;
3091 }
3092 
3093 static int qeth_hw_trap_cb(struct qeth_card *card,
3094                 struct qeth_reply *reply, unsigned long data)
3095 {
3096         struct qeth_ipa_cmd *cmd;
3097         __u16 rc;
3098 
3099         cmd = (struct qeth_ipa_cmd *)data;
3100         rc = cmd->hdr.return_code;
3101         if (rc)
3102                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3103         return 0;
3104 }
3105 
3106 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3107 {
3108         struct qeth_cmd_buffer *iob;
3109         struct qeth_ipa_cmd *cmd;
3110 
3111         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3112         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3113         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3114         cmd->data.diagass.subcmd_len = 80;
3115         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3116         cmd->data.diagass.type = 1;
3117         cmd->data.diagass.action = action;
3118         switch (action) {
3119         case QETH_DIAGS_TRAP_ARM:
3120                 cmd->data.diagass.options = 0x0003;
3121                 cmd->data.diagass.ext = 0x00010000 +
3122                         sizeof(struct qeth_trap_id);
3123                 qeth_get_trap_id(card,
3124                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3125                 break;
3126         case QETH_DIAGS_TRAP_DISARM:
3127                 cmd->data.diagass.options = 0x0001;
3128                 break;
3129         case QETH_DIAGS_TRAP_CAPTURE:
3130                 break;
3131         }
3132         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3133 }
3134 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3135 
3136 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3137                 unsigned int qdio_error, const char *dbftext)
3138 {
3139         if (qdio_error) {
3140                 QETH_CARD_TEXT(card, 2, dbftext);
3141                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3142                                buf->element[15].sflags);
3143                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3144                                buf->element[14].sflags);
3145                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3146                 if ((buf->element[15].sflags) == 0x12) {
3147                         card->stats.rx_dropped++;
3148                         return 0;
3149                 } else
3150                         return 1;
3151         }
3152         return 0;
3153 }
3154 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3155 
3156 void qeth_buffer_reclaim_work(struct work_struct *work)
3157 {
3158         struct qeth_card *card = container_of(work, struct qeth_card,
3159                 buffer_reclaim_work.work);
3160 
3161         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3162         qeth_queue_input_buffer(card, card->reclaim_index);
3163 }
3164 
3165 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3166 {
3167         struct qeth_qdio_q *queue = card->qdio.in_q;
3168         struct list_head *lh;
3169         int count;
3170         int i;
3171         int rc;
3172         int newcount = 0;
3173 
3174         count = (index < queue->next_buf_to_init)?
3175                 card->qdio.in_buf_pool.buf_count -
3176                 (queue->next_buf_to_init - index) :
3177                 card->qdio.in_buf_pool.buf_count -
3178                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3179         /* only requeue at a certain threshold to avoid SIGAs */
3180         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3181                 for (i = queue->next_buf_to_init;
3182                      i < queue->next_buf_to_init + count; ++i) {
3183                         if (qeth_init_input_buffer(card,
3184                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3185                                 break;
3186                         } else {
3187                                 newcount++;
3188                         }
3189                 }
3190 
3191                 if (newcount < count) {
3192                         /* we are in memory shortage so we switch back to
3193                            traditional skb allocation and drop packages */
3194                         atomic_set(&card->force_alloc_skb, 3);
3195                         count = newcount;
3196                 } else {
3197                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3198                 }
3199 
3200                 if (!count) {
3201                         i = 0;
3202                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3203                                 i++;
3204                         if (i == card->qdio.in_buf_pool.buf_count) {
3205                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3206                                 card->reclaim_index = index;
3207                                 schedule_delayed_work(
3208                                         &card->buffer_reclaim_work,
3209                                         QETH_RECLAIM_WORK_TIME);
3210                         }
3211                         return;
3212                 }
3213 
3214                 /*
3215                  * according to old code it should be avoided to requeue all
3216                  * 128 buffers in order to benefit from PCI avoidance.
3217                  * this function keeps at least one buffer (the buffer at
3218                  * 'index') un-requeued -> this buffer is the first buffer that
3219                  * will be requeued the next time
3220                  */
3221                 if (card->options.performance_stats) {
3222                         card->perf_stats.inbound_do_qdio_cnt++;
3223                         card->perf_stats.inbound_do_qdio_start_time =
3224                                 qeth_get_micros();
3225                 }
3226                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3227                              queue->next_buf_to_init, count);
3228                 if (card->options.performance_stats)
3229                         card->perf_stats.inbound_do_qdio_time +=
3230                                 qeth_get_micros() -
3231                                 card->perf_stats.inbound_do_qdio_start_time;
3232                 if (rc) {
3233                         QETH_CARD_TEXT(card, 2, "qinberr");
3234                 }
3235                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3236                                           QDIO_MAX_BUFFERS_PER_Q;
3237         }
3238 }
3239 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3240 
3241 static int qeth_handle_send_error(struct qeth_card *card,
3242                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3243 {
3244         int sbalf15 = buffer->buffer->element[15].sflags;
3245 
3246         QETH_CARD_TEXT(card, 6, "hdsnderr");
3247         if (card->info.type == QETH_CARD_TYPE_IQD) {
3248                 if (sbalf15 == 0) {
3249                         qdio_err = 0;
3250                 } else {
3251                         qdio_err = 1;
3252                 }
3253         }
3254         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3255 
3256         if (!qdio_err)
3257                 return QETH_SEND_ERROR_NONE;
3258 
3259         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3260                 return QETH_SEND_ERROR_RETRY;
3261 
3262         QETH_CARD_TEXT(card, 1, "lnkfail");
3263         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3264                        (u16)qdio_err, (u8)sbalf15);
3265         return QETH_SEND_ERROR_LINK_FAILURE;
3266 }
3267 
3268 /*
3269  * Switched to packing state if the number of used buffers on a queue
3270  * reaches a certain limit.
3271  */
3272 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3273 {
3274         if (!queue->do_pack) {
3275                 if (atomic_read(&queue->used_buffers)
3276                     >= QETH_HIGH_WATERMARK_PACK){
3277                         /* switch non-PACKING -> PACKING */
3278                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3279                         if (queue->card->options.performance_stats)
3280                                 queue->card->perf_stats.sc_dp_p++;
3281                         queue->do_pack = 1;
3282                 }
3283         }
3284 }
3285 
3286 /*
3287  * Switches from packing to non-packing mode. If there is a packing
3288  * buffer on the queue this buffer will be prepared to be flushed.
3289  * In that case 1 is returned to inform the caller. If no buffer
3290  * has to be flushed, zero is returned.
3291  */
3292 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3293 {
3294         struct qeth_qdio_out_buffer *buffer;
3295         int flush_count = 0;
3296 
3297         if (queue->do_pack) {
3298                 if (atomic_read(&queue->used_buffers)
3299                     <= QETH_LOW_WATERMARK_PACK) {
3300                         /* switch PACKING -> non-PACKING */
3301                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3302                         if (queue->card->options.performance_stats)
3303                                 queue->card->perf_stats.sc_p_dp++;
3304                         queue->do_pack = 0;
3305                         /* flush packing buffers */
3306                         buffer = queue->bufs[queue->next_buf_to_fill];
3307                         if ((atomic_read(&buffer->state) ==
3308                                                 QETH_QDIO_BUF_EMPTY) &&
3309                             (buffer->next_element_to_fill > 0)) {
3310                                 atomic_set(&buffer->state,
3311                                            QETH_QDIO_BUF_PRIMED);
3312                                 flush_count++;
3313                                 queue->next_buf_to_fill =
3314                                         (queue->next_buf_to_fill + 1) %
3315                                         QDIO_MAX_BUFFERS_PER_Q;
3316                         }
3317                 }
3318         }
3319         return flush_count;
3320 }
3321 
3322 
3323 /*
3324  * Called to flush a packing buffer if no more pci flags are on the queue.
3325  * Checks if there is a packing buffer and prepares it to be flushed.
3326  * In that case returns 1, otherwise zero.
3327  */
3328 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3329 {
3330         struct qeth_qdio_out_buffer *buffer;
3331 
3332         buffer = queue->bufs[queue->next_buf_to_fill];
3333         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3334            (buffer->next_element_to_fill > 0)) {
3335                 /* it's a packing buffer */
3336                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3337                 queue->next_buf_to_fill =
3338                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3339                 return 1;
3340         }
3341         return 0;
3342 }
3343 
3344 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3345                                int count)
3346 {
3347         struct qeth_qdio_out_buffer *buf;
3348         int rc;
3349         int i;
3350         unsigned int qdio_flags;
3351 
3352         for (i = index; i < index + count; ++i) {
3353                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3354                 buf = queue->bufs[bidx];
3355                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3356                                 SBAL_EFLAGS_LAST_ENTRY;
3357 
3358                 if (queue->bufstates)
3359                         queue->bufstates[bidx].user = buf;
3360 
3361                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3362                         continue;
3363 
3364                 if (!queue->do_pack) {
3365                         if ((atomic_read(&queue->used_buffers) >=
3366                                 (QETH_HIGH_WATERMARK_PACK -
3367                                  QETH_WATERMARK_PACK_FUZZ)) &&
3368                             !atomic_read(&queue->set_pci_flags_count)) {
3369                                 /* it's likely that we'll go to packing
3370                                  * mode soon */
3371                                 atomic_inc(&queue->set_pci_flags_count);
3372                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3373                         }
3374                 } else {
3375                         if (!atomic_read(&queue->set_pci_flags_count)) {
3376                                 /*
3377                                  * there's no outstanding PCI any more, so we
3378                                  * have to request a PCI to be sure the the PCI
3379                                  * will wake at some time in the future then we
3380                                  * can flush packed buffers that might still be
3381                                  * hanging around, which can happen if no
3382                                  * further send was requested by the stack
3383                                  */
3384                                 atomic_inc(&queue->set_pci_flags_count);
3385                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3386                         }
3387                 }
3388         }
3389 
3390         queue->card->dev->trans_start = jiffies;
3391         if (queue->card->options.performance_stats) {
3392                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3393                 queue->card->perf_stats.outbound_do_qdio_start_time =
3394                         qeth_get_micros();
3395         }
3396         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3397         if (atomic_read(&queue->set_pci_flags_count))
3398                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3399         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3400                      queue->queue_no, index, count);
3401         if (queue->card->options.performance_stats)
3402                 queue->card->perf_stats.outbound_do_qdio_time +=
3403                         qeth_get_micros() -
3404                         queue->card->perf_stats.outbound_do_qdio_start_time;
3405         atomic_add(count, &queue->used_buffers);
3406         if (rc) {
3407                 queue->card->stats.tx_errors += count;
3408                 /* ignore temporary SIGA errors without busy condition */
3409                 if (rc == -ENOBUFS)
3410                         return;
3411                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3412                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3413                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3414                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3415                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3416 
3417                 /* this must not happen under normal circumstances. if it
3418                  * happens something is really wrong -> recover */
3419                 qeth_schedule_recovery(queue->card);
3420                 return;
3421         }
3422         if (queue->card->options.performance_stats)
3423                 queue->card->perf_stats.bufs_sent += count;
3424 }
3425 
3426 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3427 {
3428         int index;
3429         int flush_cnt = 0;
3430         int q_was_packing = 0;
3431 
3432         /*
3433          * check if weed have to switch to non-packing mode or if
3434          * we have to get a pci flag out on the queue
3435          */
3436         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3437             !atomic_read(&queue->set_pci_flags_count)) {
3438                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3439                                 QETH_OUT_Q_UNLOCKED) {
3440                         /*
3441                          * If we get in here, there was no action in
3442                          * do_send_packet. So, we check if there is a
3443                          * packing buffer to be flushed here.
3444                          */
3445                         netif_stop_queue(queue->card->dev);
3446                         index = queue->next_buf_to_fill;
3447                         q_was_packing = queue->do_pack;
3448                         /* queue->do_pack may change */
3449                         barrier();
3450                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3451                         if (!flush_cnt &&
3452                             !atomic_read(&queue->set_pci_flags_count))
3453                                 flush_cnt +=
3454                                         qeth_flush_buffers_on_no_pci(queue);
3455                         if (queue->card->options.performance_stats &&
3456                             q_was_packing)
3457                                 queue->card->perf_stats.bufs_sent_pack +=
3458                                         flush_cnt;
3459                         if (flush_cnt)
3460                                 qeth_flush_buffers(queue, index, flush_cnt);
3461                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3462                 }
3463         }
3464 }
3465 
3466 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3467                 unsigned long card_ptr)
3468 {
3469         struct qeth_card *card = (struct qeth_card *)card_ptr;
3470 
3471         if (card->dev && (card->dev->flags & IFF_UP))
3472                 napi_schedule(&card->napi);
3473 }
3474 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3475 
3476 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3477 {
3478         int rc;
3479 
3480         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3481                 rc = -1;
3482                 goto out;
3483         } else {
3484                 if (card->options.cq == cq) {
3485                         rc = 0;
3486                         goto out;
3487                 }
3488 
3489                 if (card->state != CARD_STATE_DOWN &&
3490                     card->state != CARD_STATE_RECOVER) {
3491                         rc = -1;
3492                         goto out;
3493                 }
3494 
3495                 qeth_free_qdio_buffers(card);
3496                 card->options.cq = cq;
3497                 rc = 0;
3498         }
3499 out:
3500         return rc;
3501 
3502 }
3503 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3504 
3505 
3506 static void qeth_qdio_cq_handler(struct qeth_card *card,
3507                 unsigned int qdio_err,
3508                 unsigned int queue, int first_element, int count) {
3509         struct qeth_qdio_q *cq = card->qdio.c_q;
3510         int i;
3511         int rc;
3512 
3513         if (!qeth_is_cq(card, queue))
3514                 goto out;
3515 
3516         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3517         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3518         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3519 
3520         if (qdio_err) {
3521                 netif_stop_queue(card->dev);
3522                 qeth_schedule_recovery(card);
3523                 goto out;
3524         }
3525 
3526         if (card->options.performance_stats) {
3527                 card->perf_stats.cq_cnt++;
3528                 card->perf_stats.cq_start_time = qeth_get_micros();
3529         }
3530 
3531         for (i = first_element; i < first_element + count; ++i) {
3532                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3533                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3534                 int e;
3535 
3536                 e = 0;
3537                 while (buffer->element[e].addr) {
3538                         unsigned long phys_aob_addr;
3539 
3540                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3541                         qeth_qdio_handle_aob(card, phys_aob_addr);
3542                         buffer->element[e].addr = NULL;
3543                         buffer->element[e].eflags = 0;
3544                         buffer->element[e].sflags = 0;
3545                         buffer->element[e].length = 0;
3546 
3547                         ++e;
3548                 }
3549 
3550                 buffer->element[15].eflags = 0;
3551                 buffer->element[15].sflags = 0;
3552         }
3553         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3554                     card->qdio.c_q->next_buf_to_init,
3555                     count);
3556         if (rc) {
3557                 dev_warn(&card->gdev->dev,
3558                         "QDIO reported an error, rc=%i\n", rc);
3559                 QETH_CARD_TEXT(card, 2, "qcqherr");
3560         }
3561         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3562                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3563 
3564         netif_wake_queue(card->dev);
3565 
3566         if (card->options.performance_stats) {
3567                 int delta_t = qeth_get_micros();
3568                 delta_t -= card->perf_stats.cq_start_time;
3569                 card->perf_stats.cq_time += delta_t;
3570         }
3571 out:
3572         return;
3573 }
3574 
3575 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3576                 unsigned int queue, int first_elem, int count,
3577                 unsigned long card_ptr)
3578 {
3579         struct qeth_card *card = (struct qeth_card *)card_ptr;
3580 
3581         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3582         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3583 
3584         if (qeth_is_cq(card, queue))
3585                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3586         else if (qdio_err)
3587                 qeth_schedule_recovery(card);
3588 
3589 
3590 }
3591 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3592 
3593 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3594                 unsigned int qdio_error, int __queue, int first_element,
3595                 int count, unsigned long card_ptr)
3596 {
3597         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3598         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3599         struct qeth_qdio_out_buffer *buffer;
3600         int i;
3601 
3602         QETH_CARD_TEXT(card, 6, "qdouhdl");
3603         if (qdio_error & QDIO_ERROR_FATAL) {
3604                 QETH_CARD_TEXT(card, 2, "achkcond");
3605                 netif_stop_queue(card->dev);
3606                 qeth_schedule_recovery(card);
3607                 return;
3608         }
3609         if (card->options.performance_stats) {
3610                 card->perf_stats.outbound_handler_cnt++;
3611                 card->perf_stats.outbound_handler_start_time =
3612                         qeth_get_micros();
3613         }
3614         for (i = first_element; i < (first_element + count); ++i) {
3615                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3616                 buffer = queue->bufs[bidx];
3617                 qeth_handle_send_error(card, buffer, qdio_error);
3618 
3619                 if (queue->bufstates &&
3620                     (queue->bufstates[bidx].flags &
3621                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3622                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3623 
3624                         if (atomic_cmpxchg(&buffer->state,
3625                                            QETH_QDIO_BUF_PRIMED,
3626                                            QETH_QDIO_BUF_PENDING) ==
3627                                 QETH_QDIO_BUF_PRIMED) {
3628                                 qeth_notify_skbs(queue, buffer,
3629                                                  TX_NOTIFY_PENDING);
3630                         }
3631                         buffer->aob = queue->bufstates[bidx].aob;
3632                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3633                         QETH_CARD_TEXT(queue->card, 5, "aob");
3634                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3635                                         virt_to_phys(buffer->aob));
3636                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3637                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3638                                 qeth_schedule_recovery(card);
3639                         }
3640                 } else {
3641                         if (card->options.cq == QETH_CQ_ENABLED) {
3642                                 enum iucv_tx_notify n;
3643 
3644                                 n = qeth_compute_cq_notification(
3645                                         buffer->buffer->element[15].sflags, 0);
3646                                 qeth_notify_skbs(queue, buffer, n);
3647                         }
3648 
3649                         qeth_clear_output_buffer(queue, buffer,
3650                                                 QETH_QDIO_BUF_EMPTY);
3651                 }
3652                 qeth_cleanup_handled_pending(queue, bidx, 0);
3653         }
3654         atomic_sub(count, &queue->used_buffers);
3655         /* check if we need to do something on this outbound queue */
3656         if (card->info.type != QETH_CARD_TYPE_IQD)
3657                 qeth_check_outbound_queue(queue);
3658 
3659         netif_wake_queue(queue->card->dev);
3660         if (card->options.performance_stats)
3661                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3662                         card->perf_stats.outbound_handler_start_time;
3663 }
3664 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3665 
3666 /**
3667  * Note: Function assumes that we have 4 outbound queues.
3668  */
3669 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3670                         int ipv, int cast_type)
3671 {
3672         __be16 *tci;
3673         u8 tos;
3674 
3675         if (cast_type && card->info.is_multicast_different)
3676                 return card->info.is_multicast_different &
3677                         (card->qdio.no_out_queues - 1);
3678 
3679         switch (card->qdio.do_prio_queueing) {
3680         case QETH_PRIO_Q_ING_TOS:
3681         case QETH_PRIO_Q_ING_PREC:
3682                 switch (ipv) {
3683                 case 4:
3684                         tos = ipv4_get_dsfield(ip_hdr(skb));
3685                         break;
3686                 case 6:
3687                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3688                         break;
3689                 default:
3690                         return card->qdio.default_out_queue;
3691                 }
3692                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3693                         return ~tos >> 6 & 3;
3694                 if (tos & IPTOS_MINCOST)
3695                         return 3;
3696                 if (tos & IPTOS_RELIABILITY)
3697                         return 2;
3698                 if (tos & IPTOS_THROUGHPUT)
3699                         return 1;
3700                 if (tos & IPTOS_LOWDELAY)
3701                         return 0;
3702                 break;
3703         case QETH_PRIO_Q_ING_SKB:
3704                 if (skb->priority > 5)
3705                         return 0;
3706                 return ~skb->priority >> 1 & 3;
3707         case QETH_PRIO_Q_ING_VLAN:
3708                 tci = &((struct ethhdr *)skb->data)->h_proto;
3709                 if (*tci == ETH_P_8021Q)
3710                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3711                 break;
3712         default:
3713                 break;
3714         }
3715         return card->qdio.default_out_queue;
3716 }
3717 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3718 
3719 int qeth_get_elements_for_frags(struct sk_buff *skb)
3720 {
3721         int cnt, length, e, elements = 0;
3722         struct skb_frag_struct *frag;
3723         char *data;
3724 
3725         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3726                 frag = &skb_shinfo(skb)->frags[cnt];
3727                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3728                         frag->page_offset;
3729                 length = frag->size;
3730                 e = PFN_UP((unsigned long)data + length - 1) -
3731                         PFN_DOWN((unsigned long)data);
3732                 elements += e;
3733         }
3734         return elements;
3735 }
3736 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3737 
3738 int qeth_get_elements_no(struct qeth_card *card,
3739                      struct sk_buff *skb, int elems)
3740 {
3741         int dlen = skb->len - skb->data_len;
3742         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3743                 PFN_DOWN((unsigned long)skb->data);
3744 
3745         elements_needed += qeth_get_elements_for_frags(skb);
3746 
3747         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3748                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3749                         "(Number=%d / Length=%d). Discarded.\n",
3750                         (elements_needed+elems), skb->len);
3751                 return 0;
3752         }
3753         return elements_needed;
3754 }
3755 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3756 
3757 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3758 {
3759         int hroom, inpage, rest;
3760 
3761         if (((unsigned long)skb->data & PAGE_MASK) !=
3762             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3763                 hroom = skb_headroom(skb);
3764                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3765                 rest = len - inpage;
3766                 if (rest > hroom)
3767                         return 1;
3768                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3769                 skb->data -= rest;
3770                 skb->tail -= rest;
3771                 *hdr = (struct qeth_hdr *)skb->data;
3772                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3773         }
3774         return 0;
3775 }
3776 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3777 
3778 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3779         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3780         int offset)
3781 {
3782         int length = skb->len - skb->data_len;
3783         int length_here;
3784         int element;
3785         char *data;
3786         int first_lap, cnt;
3787         struct skb_frag_struct *frag;
3788 
3789         element = *next_element_to_fill;
3790         data = skb->data;
3791         first_lap = (is_tso == 0 ? 1 : 0);
3792 
3793         if (offset >= 0) {
3794                 data = skb->data + offset;
3795                 length -= offset;
3796                 first_lap = 0;
3797         }
3798 
3799         while (length > 0) {
3800                 /* length_here is the remaining amount of data in this page */
3801                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3802                 if (length < length_here)
3803                         length_here = length;
3804 
3805                 buffer->element[element].addr = data;
3806                 buffer->element[element].length = length_here;
3807                 length -= length_here;
3808                 if (!length) {
3809                         if (first_lap)
3810                                 if (skb_shinfo(skb)->nr_frags)
3811                                         buffer->element[element].eflags =
3812                                                 SBAL_EFLAGS_FIRST_FRAG;
3813                                 else
3814                                         buffer->element[element].eflags = 0;
3815                         else
3816                                 buffer->element[element].eflags =
3817                                     SBAL_EFLAGS_MIDDLE_FRAG;
3818                 } else {
3819                         if (first_lap)
3820                                 buffer->element[element].eflags =
3821                                     SBAL_EFLAGS_FIRST_FRAG;
3822                         else
3823                                 buffer->element[element].eflags =
3824                                     SBAL_EFLAGS_MIDDLE_FRAG;
3825                 }
3826                 data += length_here;
3827                 element++;
3828                 first_lap = 0;
3829         }
3830 
3831         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3832                 frag = &skb_shinfo(skb)->frags[cnt];
3833                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3834                         frag->page_offset;
3835                 length = frag->size;
3836                 while (length > 0) {
3837                         length_here = PAGE_SIZE -
3838                                 ((unsigned long) data % PAGE_SIZE);
3839                         if (length < length_here)
3840                                 length_here = length;
3841 
3842                         buffer->element[element].addr = data;
3843                         buffer->element[element].length = length_here;
3844                         buffer->element[element].eflags =
3845                                 SBAL_EFLAGS_MIDDLE_FRAG;
3846                         length -= length_here;
3847                         data += length_here;
3848                         element++;
3849                 }
3850         }
3851 
3852         if (buffer->element[element - 1].eflags)
3853                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3854         *next_element_to_fill = element;
3855 }
3856 
3857 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3858                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3859                 struct qeth_hdr *hdr, int offset, int hd_len)
3860 {
3861         struct qdio_buffer *buffer;
3862         int flush_cnt = 0, hdr_len, large_send = 0;
3863 
3864         buffer = buf->buffer;
3865         atomic_inc(&skb->users);
3866         skb_queue_tail(&buf->skb_list, skb);
3867 
3868         /*check first on TSO ....*/
3869         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3870                 int element = buf->next_element_to_fill;
3871 
3872                 hdr_len = sizeof(struct qeth_hdr_tso) +
3873                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3874                 /*fill first buffer entry only with header information */
3875                 buffer->element[element].addr = skb->data;
3876                 buffer->element[element].length = hdr_len;
3877                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3878                 buf->next_element_to_fill++;
3879                 skb->data += hdr_len;
3880                 skb->len  -= hdr_len;
3881                 large_send = 1;
3882         }
3883 
3884         if (offset >= 0) {
3885                 int element = buf->next_element_to_fill;
3886                 buffer->element[element].addr = hdr;
3887                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3888                                                         hd_len;
3889                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3890                 buf->is_header[element] = 1;
3891                 buf->next_element_to_fill++;
3892         }
3893 
3894         __qeth_fill_buffer(skb, buffer, large_send,
3895                 (int *)&buf->next_element_to_fill, offset);
3896 
3897         if (!queue->do_pack) {
3898                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3899                 /* set state to PRIMED -> will be flushed */
3900                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3901                 flush_cnt = 1;
3902         } else {
3903                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3904                 if (queue->card->options.performance_stats)
3905                         queue->card->perf_stats.skbs_sent_pack++;
3906                 if (buf->next_element_to_fill >=
3907                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3908                         /*
3909                          * packed buffer if full -> set state PRIMED
3910                          * -> will be flushed
3911                          */
3912                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3913                         flush_cnt = 1;
3914                 }
3915         }
3916         return flush_cnt;
3917 }
3918 
3919 int qeth_do_send_packet_fast(struct qeth_card *card,
3920                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3921                 struct qeth_hdr *hdr, int elements_needed,
3922                 int offset, int hd_len)
3923 {
3924         struct qeth_qdio_out_buffer *buffer;
3925         int index;
3926 
3927         /* spin until we get the queue ... */
3928         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3929                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3930         /* ... now we've got the queue */
3931         index = queue->next_buf_to_fill;
3932         buffer = queue->bufs[queue->next_buf_to_fill];
3933         /*
3934          * check if buffer is empty to make sure that we do not 'overtake'
3935          * ourselves and try to fill a buffer that is already primed
3936          */
3937         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3938                 goto out;
3939         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3940                                           QDIO_MAX_BUFFERS_PER_Q;
3941         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3942         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3943         qeth_flush_buffers(queue, index, 1);
3944         return 0;
3945 out:
3946         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3947         return -EBUSY;
3948 }
3949 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3950 
3951 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3952                 struct sk_buff *skb, struct qeth_hdr *hdr,
3953                 int elements_needed)
3954 {
3955         struct qeth_qdio_out_buffer *buffer;
3956         int start_index;
3957         int flush_count = 0;
3958         int do_pack = 0;
3959         int tmp;
3960         int rc = 0;
3961 
3962         /* spin until we get the queue ... */
3963         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3964                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3965         start_index = queue->next_buf_to_fill;
3966         buffer = queue->bufs[queue->next_buf_to_fill];
3967         /*
3968          * check if buffer is empty to make sure that we do not 'overtake'
3969          * ourselves and try to fill a buffer that is already primed
3970          */
3971         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3972                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3973                 return -EBUSY;
3974         }
3975         /* check if we need to switch packing state of this queue */
3976         qeth_switch_to_packing_if_needed(queue);
3977         if (queue->do_pack) {
3978                 do_pack = 1;
3979                 /* does packet fit in current buffer? */
3980                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3981                     buffer->next_element_to_fill) < elements_needed) {
3982                         /* ... no -> set state PRIMED */
3983                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3984                         flush_count++;
3985                         queue->next_buf_to_fill =
3986                                 (queue->next_buf_to_fill + 1) %
3987                                 QDIO_MAX_BUFFERS_PER_Q;
3988                         buffer = queue->bufs[queue->next_buf_to_fill];
3989                         /* we did a step forward, so check buffer state
3990                          * again */
3991                         if (atomic_read(&buffer->state) !=
3992                             QETH_QDIO_BUF_EMPTY) {
3993                                 qeth_flush_buffers(queue, start_index,
3994                                                            flush_count);
3995                                 atomic_set(&queue->state,
3996                                                 QETH_OUT_Q_UNLOCKED);
3997                                 return -EBUSY;
3998                         }
3999                 }
4000         }
4001         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4002         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4003                                   QDIO_MAX_BUFFERS_PER_Q;
4004         flush_count += tmp;
4005         if (flush_count)
4006                 qeth_flush_buffers(queue, start_index, flush_count);
4007         else if (!atomic_read(&queue->set_pci_flags_count))
4008                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4009         /*
4010          * queue->state will go from LOCKED -> UNLOCKED or from
4011          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4012          * (switch packing state or flush buffer to get another pci flag out).
4013          * In that case we will enter this loop
4014          */
4015         while (atomic_dec_return(&queue->state)) {
4016                 flush_count = 0;
4017                 start_index = queue->next_buf_to_fill;
4018                 /* check if we can go back to non-packing state */
4019                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4020                 /*
4021                  * check if we need to flush a packing buffer to get a pci
4022                  * flag out on the queue
4023                  */
4024                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4025                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4026                 if (flush_count)
4027                         qeth_flush_buffers(queue, start_index, flush_count);
4028         }
4029         /* at this point the queue is UNLOCKED again */
4030         if (queue->card->options.performance_stats && do_pack)
4031                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4032 
4033         return rc;
4034 }
4035 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4036 
4037 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4038                 struct qeth_reply *reply, unsigned long data)
4039 {
4040         struct qeth_ipa_cmd *cmd;
4041         struct qeth_ipacmd_setadpparms *setparms;
4042 
4043         QETH_CARD_TEXT(card, 4, "prmadpcb");
4044 
4045         cmd = (struct qeth_ipa_cmd *) data;
4046         setparms = &(cmd->data.setadapterparms);
4047 
4048         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4049         if (cmd->hdr.return_code) {
4050                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4051                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4052         }
4053         card->info.promisc_mode = setparms->data.mode;
4054         return 0;
4055 }
4056 
4057 void qeth_setadp_promisc_mode(struct qeth_card *card)
4058 {
4059         enum qeth_ipa_promisc_modes mode;
4060         struct net_device *dev = card->dev;
4061         struct qeth_cmd_buffer *iob;
4062         struct qeth_ipa_cmd *cmd;
4063 
4064         QETH_CARD_TEXT(card, 4, "setprom");
4065 
4066         if (((dev->flags & IFF_PROMISC) &&
4067              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4068             (!(dev->flags & IFF_PROMISC) &&
4069              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4070                 return;
4071         mode = SET_PROMISC_MODE_OFF;
4072         if (dev->flags & IFF_PROMISC)
4073                 mode = SET_PROMISC_MODE_ON;
4074         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4075 
4076         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4077                         sizeof(struct qeth_ipacmd_setadpparms));
4078         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4079         cmd->data.setadapterparms.data.mode = mode;
4080         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4081 }
4082 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4083 
4084 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4085 {
4086         struct qeth_card *card;
4087         char dbf_text[15];
4088 
4089         card = dev->ml_priv;
4090 
4091         QETH_CARD_TEXT(card, 4, "chgmtu");
4092         sprintf(dbf_text, "%8x", new_mtu);
4093         QETH_CARD_TEXT(card, 4, dbf_text);
4094 
4095         if (new_mtu < 64)
4096                 return -EINVAL;
4097         if (new_mtu > 65535)
4098                 return -EINVAL;
4099         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4100             (!qeth_mtu_is_valid(card, new_mtu)))
4101                 return -EINVAL;
4102         dev->mtu = new_mtu;
4103         return 0;
4104 }
4105 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4106 
4107 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4108 {
4109         struct qeth_card *card;
4110 
4111         card = dev->ml_priv;
4112 
4113         QETH_CARD_TEXT(card, 5, "getstat");
4114 
4115         return &card->stats;
4116 }
4117 EXPORT_SYMBOL_GPL(qeth_get_stats);
4118 
4119 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4120                 struct qeth_reply *reply, unsigned long data)
4121 {
4122         struct qeth_ipa_cmd *cmd;
4123 
4124         QETH_CARD_TEXT(card, 4, "chgmaccb");
4125 
4126         cmd = (struct qeth_ipa_cmd *) data;
4127         if (!card->options.layer2 ||
4128             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4129                 memcpy(card->dev->dev_addr,
4130                        &cmd->data.setadapterparms.data.change_addr.addr,
4131                        OSA_ADDR_LEN);
4132                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4133         }
4134         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4135         return 0;
4136 }
4137 
4138 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4139 {
4140         int rc;
4141         struct qeth_cmd_buffer *iob;
4142         struct qeth_ipa_cmd *cmd;
4143 
4144         QETH_CARD_TEXT(card, 4, "chgmac");
4145 
4146         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4147                                    sizeof(struct qeth_ipacmd_setadpparms));
4148         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4149         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4150         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4151         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4152                card->dev->dev_addr, OSA_ADDR_LEN);
4153         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4154                                NULL);
4155         return rc;
4156 }
4157 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4158 
4159 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4160                 struct qeth_reply *reply, unsigned long data)
4161 {
4162         struct qeth_ipa_cmd *cmd;
4163         struct qeth_set_access_ctrl *access_ctrl_req;
4164         int fallback = *(int *)reply->param;
4165 
4166         QETH_CARD_TEXT(card, 4, "setaccb");
4167 
4168         cmd = (struct qeth_ipa_cmd *) data;
4169         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4170         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4171         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4172         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4173                 cmd->data.setadapterparms.hdr.return_code);
4174         if (cmd->data.setadapterparms.hdr.return_code !=
4175                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4176                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4177                                 card->gdev->dev.kobj.name,
4178                                 access_ctrl_req->subcmd_code,
4179                                 cmd->data.setadapterparms.hdr.return_code);
4180         switch (cmd->data.setadapterparms.hdr.return_code) {
4181         case SET_ACCESS_CTRL_RC_SUCCESS:
4182                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4183                         dev_info(&card->gdev->dev,
4184                             "QDIO data connection isolation is deactivated\n");
4185                 } else {
4186                         dev_info(&card->gdev->dev,
4187                             "QDIO data connection isolation is activated\n");
4188                 }
4189                 break;
4190         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4191                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4192                                 "deactivated\n", dev_name(&card->gdev->dev));
4193                 if (fallback)
4194                         card->options.isolation = card->options.prev_isolation;
4195                 break;
4196         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4197                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4198                                 " activated\n", dev_name(&card->gdev->dev));
4199                 if (fallback)
4200                         card->options.isolation = card->options.prev_isolation;
4201                 break;
4202         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4203                 dev_err(&card->gdev->dev, "Adapter does not "
4204                         "support QDIO data connection isolation\n");
4205                 break;
4206         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4207                 dev_err(&card->gdev->dev,
4208                         "Adapter is dedicated. "
4209                         "QDIO data connection isolation not supported\n");
4210                 if (fallback)
4211                         card->options.isolation = card->options.prev_isolation;
4212                 break;
4213         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4214                 dev_err(&card->gdev->dev,
4215                         "TSO does not permit QDIO data connection isolation\n");
4216                 if (fallback)
4217                         card->options.isolation = card->options.prev_isolation;
4218                 break;
4219         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4220                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4221                         "support reflective relay mode\n");
4222                 if (fallback)
4223                         card->options.isolation = card->options.prev_isolation;
4224                 break;
4225         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4226                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4227                                         "enabled at the adjacent switch port");
4228                 if (fallback)
4229                         card->options.isolation = card->options.prev_isolation;
4230                 break;
4231         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4232                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4233                                         "at the adjacent switch failed\n");
4234                 break;
4235         default:
4236                 /* this should never happen */
4237                 if (fallback)
4238                         card->options.isolation = card->options.prev_isolation;
4239                 break;
4240         }
4241         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4242         return 0;
4243 }
4244 
4245 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4246                 enum qeth_ipa_isolation_modes isolation, int fallback)
4247 {
4248         int rc;
4249         struct qeth_cmd_buffer *iob;
4250         struct qeth_ipa_cmd *cmd;
4251         struct qeth_set_access_ctrl *access_ctrl_req;
4252 
4253         QETH_CARD_TEXT(card, 4, "setacctl");
4254 
4255         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4256         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4257 
4258         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4259                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4260                                    sizeof(struct qeth_set_access_ctrl));
4261         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4262         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4263         access_ctrl_req->subcmd_code = isolation;
4264 
4265         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4266                                &fallback);
4267         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4268         return rc;
4269 }
4270 
4271 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4272 {
4273         int rc = 0;
4274 
4275         QETH_CARD_TEXT(card, 4, "setactlo");
4276 
4277         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4278              card->info.type == QETH_CARD_TYPE_OSX) &&
4279              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4280                 rc = qeth_setadpparms_set_access_ctrl(card,
4281                         card->options.isolation, fallback);
4282                 if (rc) {
4283                         QETH_DBF_MESSAGE(3,
4284                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4285                                 card->gdev->dev.kobj.name,
4286                                 rc);
4287                         rc = -EOPNOTSUPP;
4288                 }
4289         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4290                 card->options.isolation = ISOLATION_MODE_NONE;
4291 
4292                 dev_err(&card->gdev->dev, "Adapter does not "
4293                         "support QDIO data connection isolation\n");
4294                 rc = -EOPNOTSUPP;
4295         }
4296         return rc;
4297 }
4298 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4299 
4300 void qeth_tx_timeout(struct net_device *dev)
4301 {
4302         struct qeth_card *card;
4303 
4304         card = dev->ml_priv;
4305         QETH_CARD_TEXT(card, 4, "txtimeo");
4306         card->stats.tx_errors++;
4307         qeth_schedule_recovery(card);
4308 }
4309 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4310 
4311 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4312 {
4313         struct qeth_card *card = dev->ml_priv;
4314         int rc = 0;
4315 
4316         switch (regnum) {
4317         case MII_BMCR: /* Basic mode control register */
4318                 rc = BMCR_FULLDPLX;
4319                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4320                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4321                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4322                         rc |= BMCR_SPEED100;
4323                 break;
4324         case MII_BMSR: /* Basic mode status register */
4325                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4326                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4327                      BMSR_100BASE4;
4328                 break;
4329         case MII_PHYSID1: /* PHYS ID 1 */
4330                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4331                      dev->dev_addr[2];
4332                 rc = (rc >> 5) & 0xFFFF;
4333                 break;
4334         case MII_PHYSID2: /* PHYS ID 2 */
4335                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4336                 break;
4337         case MII_ADVERTISE: /* Advertisement control reg */
4338                 rc = ADVERTISE_ALL;
4339                 break;
4340         case MII_LPA: /* Link partner ability reg */
4341                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4342                      LPA_100BASE4 | LPA_LPACK;
4343                 break;
4344         case MII_EXPANSION: /* Expansion register */
4345                 break;
4346         case MII_DCOUNTER: /* disconnect counter */
4347                 break;
4348         case MII_FCSCOUNTER: /* false carrier counter */
4349                 break;
4350         case MII_NWAYTEST: /* N-way auto-neg test register */
4351                 break;
4352         case MII_RERRCOUNTER: /* rx error counter */
4353                 rc = card->stats.rx_errors;
4354                 break;
4355         case MII_SREVISION: /* silicon revision */
4356                 break;
4357         case MII_RESV1: /* reserved 1 */
4358                 break;
4359         case MII_LBRERROR: /* loopback, rx, bypass error */
4360                 break;
4361         case MII_PHYADDR: /* physical address */
4362                 break;
4363         case MII_RESV2: /* reserved 2 */
4364                 break;
4365         case MII_TPISTATUS: /* TPI status for 10mbps */
4366                 break;
4367         case MII_NCONFIG: /* network interface config */
4368                 break;
4369         default:
4370                 break;
4371         }
4372         return rc;
4373 }
4374 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4375 
4376 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4377                 struct qeth_cmd_buffer *iob, int len,
4378                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4379                         unsigned long),
4380                 void *reply_param)
4381 {
4382         u16 s1, s2;
4383 
4384         QETH_CARD_TEXT(card, 4, "sendsnmp");
4385 
4386         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4387         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4388                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4389         /* adjust PDU length fields in IPA_PDU_HEADER */
4390         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4391         s2 = (u32) len;
4392         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4393         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4394         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4395         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4396         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4397                                       reply_cb, reply_param);
4398 }
4399 
4400 static int qeth_snmp_command_cb(struct qeth_card *card,
4401                 struct qeth_reply *reply, unsigned long sdata)
4402 {
4403         struct qeth_ipa_cmd *cmd;
4404         struct qeth_arp_query_info *qinfo;
4405         struct qeth_snmp_cmd *snmp;
4406         unsigned char *data;
4407         __u16 data_len;
4408 
4409         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4410 
4411         cmd = (struct qeth_ipa_cmd *) sdata;
4412         data = (unsigned char *)((char *)cmd - reply->offset);
4413         qinfo = (struct qeth_arp_query_info *) reply->param;
4414         snmp = &cmd->data.setadapterparms.data.snmp;
4415 
4416         if (cmd->hdr.return_code) {
4417                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4418                 return 0;
4419         }
4420         if (cmd->data.setadapterparms.hdr.return_code) {
4421                 cmd->hdr.return_code =
4422                         cmd->data.setadapterparms.hdr.return_code;
4423                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4424                 return 0;
4425         }
4426         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4427         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4428                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4429         else
4430                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4431 
4432         /* check if there is enough room in userspace */
4433         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4434                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4435                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4436                 return 0;
4437         }
4438         QETH_CARD_TEXT_(card, 4, "snore%i",
4439                        cmd->data.setadapterparms.hdr.used_total);
4440         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4441                 cmd->data.setadapterparms.hdr.seq_no);
4442         /*copy entries to user buffer*/
4443         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4444                 memcpy(qinfo->udata + qinfo->udata_offset,
4445                        (char *)snmp,
4446                        data_len + offsetof(struct qeth_snmp_cmd, data));
4447                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4448         } else {
4449                 memcpy(qinfo->udata + qinfo->udata_offset,
4450                        (char *)&snmp->request, data_len);
4451         }
4452         qinfo->udata_offset += data_len;
4453         /* check if all replies received ... */
4454                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4455                                cmd->data.setadapterparms.hdr.used_total);
4456                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4457                                cmd->data.setadapterparms.hdr.seq_no);
4458         if (cmd->data.setadapterparms.hdr.seq_no <
4459             cmd->data.setadapterparms.hdr.used_total)
4460                 return 1;
4461         return 0;
4462 }
4463 
4464 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4465 {
4466         struct qeth_cmd_buffer *iob;
4467         struct qeth_ipa_cmd *cmd;
4468         struct qeth_snmp_ureq *ureq;
4469         unsigned int req_len;
4470         struct qeth_arp_query_info qinfo = {0, };
4471         int rc = 0;
4472 
4473         QETH_CARD_TEXT(card, 3, "snmpcmd");
4474 
4475         if (card->info.guestlan)
4476                 return -EOPNOTSUPP;
4477 
4478         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4479             (!card->options.layer2)) {
4480                 return -EOPNOTSUPP;
4481         }
4482         /* skip 4 bytes (data_len struct member) to get req_len */
4483         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4484                 return -EFAULT;
4485         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4486                        sizeof(struct qeth_ipacmd_hdr) -
4487                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4488                 return -EINVAL;
4489         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4490         if (IS_ERR(ureq)) {
4491                 QETH_CARD_TEXT(card, 2, "snmpnome");
4492                 return PTR_ERR(ureq);
4493         }
4494         qinfo.udata_len = ureq->hdr.data_len;
4495         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4496         if (!qinfo.udata) {
4497                 kfree(ureq);
4498                 return -ENOMEM;
4499         }
4500         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4501 
4502         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4503                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4504         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4505         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4506         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4507                                     qeth_snmp_command_cb, (void *)&qinfo);
4508         if (rc)
4509                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4510                            QETH_CARD_IFNAME(card), rc);
4511         else {
4512                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4513                         rc = -EFAULT;
4514         }
4515 
4516         kfree(ureq);
4517         kfree(qinfo.udata);
4518         return rc;
4519 }
4520 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4521 
4522 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4523                 struct qeth_reply *reply, unsigned long data)
4524 {
4525         struct qeth_ipa_cmd *cmd;
4526         struct qeth_qoat_priv *priv;
4527         char *resdata;
4528         int resdatalen;
4529 
4530         QETH_CARD_TEXT(card, 3, "qoatcb");
4531 
4532         cmd = (struct qeth_ipa_cmd *)data;
4533         priv = (struct qeth_qoat_priv *)reply->param;
4534         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4535         resdata = (char *)data + 28;
4536 
4537         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4538                 cmd->hdr.return_code = IPA_RC_FFFF;
4539                 return 0;
4540         }
4541 
4542         memcpy((priv->buffer + priv->response_len), resdata,
4543                 resdatalen);
4544         priv->response_len += resdatalen;
4545 
4546         if (cmd->data.setadapterparms.hdr.seq_no <
4547             cmd->data.setadapterparms.hdr.used_total)
4548                 return 1;
4549         return 0;
4550 }
4551 
4552 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4553 {
4554         int rc = 0;
4555         struct qeth_cmd_buffer *iob;
4556         struct qeth_ipa_cmd *cmd;
4557         struct qeth_query_oat *oat_req;
4558         struct qeth_query_oat_data oat_data;
4559         struct qeth_qoat_priv priv;
4560         void __user *tmp;
4561 
4562         QETH_CARD_TEXT(card, 3, "qoatcmd");
4563 
4564         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4565                 rc = -EOPNOTSUPP;
4566                 goto out;
4567         }
4568 
4569         if (copy_from_user(&oat_data, udata,
4570             sizeof(struct qeth_query_oat_data))) {
4571                         rc = -EFAULT;
4572                         goto out;
4573         }
4574 
4575         priv.buffer_len = oat_data.buffer_len;
4576         priv.response_len = 0;
4577         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4578         if (!priv.buffer) {
4579                 rc = -ENOMEM;
4580                 goto out;
4581         }
4582 
4583         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4584                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4585                                    sizeof(struct qeth_query_oat));
4586         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4587         oat_req = &cmd->data.setadapterparms.data.query_oat;
4588         oat_req->subcmd_code = oat_data.command;
4589 
4590         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4591                                &priv);
4592         if (!rc) {
4593                 if (is_compat_task())
4594                         tmp = compat_ptr(oat_data.ptr);
4595                 else
4596                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4597 
4598                 if (copy_to_user(tmp, priv.buffer,
4599                     priv.response_len)) {
4600                         rc = -EFAULT;
4601                         goto out_free;
4602                 }
4603 
4604                 oat_data.response_len = priv.response_len;
4605 
4606                 if (copy_to_user(udata, &oat_data,
4607                     sizeof(struct qeth_query_oat_data)))
4608                         rc = -EFAULT;
4609         } else
4610                 if (rc == IPA_RC_FFFF)
4611                         rc = -EFAULT;
4612 
4613 out_free:
4614         kfree(priv.buffer);
4615 out:
4616         return rc;
4617 }
4618 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4619 
4620 static int qeth_query_card_info_cb(struct qeth_card *card,
4621                                    struct qeth_reply *reply, unsigned long data)
4622 {
4623         struct qeth_ipa_cmd *cmd;
4624         struct qeth_query_card_info *card_info;
4625         struct carrier_info *carrier_info;
4626 
4627         QETH_CARD_TEXT(card, 2, "qcrdincb");
4628         carrier_info = (struct carrier_info *)reply->param;
4629         cmd = (struct qeth_ipa_cmd *)data;
4630         card_info = &cmd->data.setadapterparms.data.card_info;
4631         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4632                 carrier_info->card_type = card_info->card_type;
4633                 carrier_info->port_mode = card_info->port_mode;
4634                 carrier_info->port_speed = card_info->port_speed;
4635         }
4636 
4637         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4638         return 0;
4639 }
4640 
4641 int qeth_query_card_info(struct qeth_card *card,
4642                                 struct carrier_info *carrier_info)
4643 {
4644         struct qeth_cmd_buffer *iob;
4645 
4646         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4647         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4648                 return -EOPNOTSUPP;
4649         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4650                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4651         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4652                                         (void *)carrier_info);
4653 }
4654 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4655 
4656 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4657 {
4658         switch (card->info.type) {
4659         case QETH_CARD_TYPE_IQD:
4660                 return 2;
4661         default:
4662                 return 0;
4663         }
4664 }
4665 
4666 static void qeth_determine_capabilities(struct qeth_card *card)
4667 {
4668         int rc;
4669         int length;
4670         char *prcd;
4671         struct ccw_device *ddev;
4672         int ddev_offline = 0;
4673 
4674         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4675         ddev = CARD_DDEV(card);
4676         if (!ddev->online) {
4677                 ddev_offline = 1;
4678                 rc = ccw_device_set_online(ddev);
4679                 if (rc) {
4680                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4681                         goto out;
4682                 }
4683         }
4684 
4685         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4686         if (rc) {
4687                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4688                         dev_name(&card->gdev->dev), rc);
4689                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4690                 goto out_offline;
4691         }
4692         qeth_configure_unitaddr(card, prcd);
4693         if (ddev_offline)
4694                 qeth_configure_blkt_default(card, prcd);
4695         kfree(prcd);
4696 
4697         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4698         if (rc)
4699                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4700 
4701         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4702         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4703         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4704         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4705         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4706             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4707             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4708                 dev_info(&card->gdev->dev,
4709                         "Completion Queueing supported\n");
4710         } else {
4711                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4712         }
4713 
4714 
4715 out_offline:
4716         if (ddev_offline == 1)
4717                 ccw_device_set_offline(ddev);
4718 out:
4719         return;
4720 }
4721 
4722 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4723         struct qdio_buffer **in_sbal_ptrs,
4724         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4725         int i;
4726 
4727         if (card->options.cq == QETH_CQ_ENABLED) {
4728                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4729                              (card->qdio.no_in_queues - 1);
4730                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4731                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4732                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4733                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4734                 }
4735 
4736                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4737         }
4738 }
4739 
4740 static int qeth_qdio_establish(struct qeth_card *card)
4741 {
4742         struct qdio_initialize init_data;
4743         char *qib_param_field;
4744         struct qdio_buffer **in_sbal_ptrs;
4745         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4746         struct qdio_buffer **out_sbal_ptrs;
4747         int i, j, k;
4748         int rc = 0;
4749 
4750         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4751 
4752         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4753                               GFP_KERNEL);
4754         if (!qib_param_field) {
4755                 rc =  -ENOMEM;
4756                 goto out_free_nothing;
4757         }
4758 
4759         qeth_create_qib_param_field(card, qib_param_field);
4760         qeth_create_qib_param_field_blkt(card, qib_param_field);
4761 
4762         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4763                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4764                                GFP_KERNEL);
4765         if (!in_sbal_ptrs) {
4766                 rc = -ENOMEM;
4767                 goto out_free_qib_param;
4768         }
4769         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4770                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4771                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4772         }
4773 
4774         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4775                                    GFP_KERNEL);
4776         if (!queue_start_poll) {
4777                 rc = -ENOMEM;
4778                 goto out_free_in_sbals;
4779         }
4780         for (i = 0; i < card->qdio.no_in_queues; ++i)
4781                 queue_start_poll[i] = card->discipline->start_poll;
4782 
4783         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4784 
4785         out_sbal_ptrs =
4786                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4787                         sizeof(void *), GFP_KERNEL);
4788         if (!out_sbal_ptrs) {
4789                 rc = -ENOMEM;
4790                 goto out_free_queue_start_poll;
4791         }
4792         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4793                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4794                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4795                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4796                 }
4797 
4798         memset(&init_data, 0, sizeof(struct qdio_initialize));
4799         init_data.cdev                   = CARD_DDEV(card);
4800         init_data.q_format               = qeth_get_qdio_q_format(card);
4801         init_data.qib_param_field_format = 0;
4802         init_data.qib_param_field        = qib_param_field;
4803         init_data.no_input_qs            = card->qdio.no_in_queues;
4804         init_data.no_output_qs           = card->qdio.no_out_queues;
4805         init_data.input_handler          = card->discipline->input_handler;
4806         init_data.output_handler         = card->discipline->output_handler;
4807         init_data.queue_start_poll_array = queue_start_poll;
4808         init_data.int_parm               = (unsigned long) card;
4809         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4810         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4811         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4812         init_data.scan_threshold =
4813                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4814 
4815         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4816                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4817                 rc = qdio_allocate(&init_data);
4818                 if (rc) {
4819                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4820                         goto out;
4821                 }
4822                 rc = qdio_establish(&init_data);
4823                 if (rc) {
4824                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4825                         qdio_free(CARD_DDEV(card));
4826                 }
4827         }
4828 
4829         switch (card->options.cq) {
4830         case QETH_CQ_ENABLED:
4831                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4832                 break;
4833         case QETH_CQ_DISABLED:
4834                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4835                 break;
4836         default:
4837                 break;
4838         }
4839 out:
4840         kfree(out_sbal_ptrs);
4841 out_free_queue_start_poll:
4842         kfree(queue_start_poll);
4843 out_free_in_sbals:
4844         kfree(in_sbal_ptrs);
4845 out_free_qib_param:
4846         kfree(qib_param_field);
4847 out_free_nothing:
4848         return rc;
4849 }
4850 
4851 static void qeth_core_free_card(struct qeth_card *card)
4852 {
4853 
4854         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4855         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4856         qeth_clean_channel(&card->read);
4857         qeth_clean_channel(&card->write);
4858         if (card->dev)
4859                 free_netdev(card->dev);
4860         kfree(card->ip_tbd_list);
4861         qeth_free_qdio_buffers(card);
4862         unregister_service_level(&card->qeth_service_level);
4863         kfree(card);
4864 }
4865 
4866 void qeth_trace_features(struct qeth_card *card)
4867 {
4868         QETH_CARD_TEXT(card, 2, "features");
4869         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4870         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4871         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4872         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4873         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4874         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4875         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4876 }
4877 EXPORT_SYMBOL_GPL(qeth_trace_features);
4878 
4879 static struct ccw_device_id qeth_ids[] = {
4880         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4881                                         .driver_info = QETH_CARD_TYPE_OSD},
4882         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4883                                         .driver_info = QETH_CARD_TYPE_IQD},
4884         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4885                                         .driver_info = QETH_CARD_TYPE_OSN},
4886         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4887                                         .driver_info = QETH_CARD_TYPE_OSM},
4888         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4889                                         .driver_info = QETH_CARD_TYPE_OSX},
4890         {},
4891 };
4892 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4893 
4894 static struct ccw_driver qeth_ccw_driver = {
4895         .driver = {
4896                 .owner = THIS_MODULE,
4897                 .name = "qeth",
4898         },
4899         .ids = qeth_ids,
4900         .probe = ccwgroup_probe_ccwdev,
4901         .remove = ccwgroup_remove_ccwdev,
4902 };
4903 
4904 int qeth_core_hardsetup_card(struct qeth_card *card)
4905 {
4906         int retries = 3;
4907         int rc;
4908 
4909         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4910         atomic_set(&card->force_alloc_skb, 0);
4911         qeth_update_from_chp_desc(card);
4912 retry:
4913         if (retries < 3)
4914                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4915                         dev_name(&card->gdev->dev));
4916         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4917         ccw_device_set_offline(CARD_DDEV(card));
4918         ccw_device_set_offline(CARD_WDEV(card));
4919         ccw_device_set_offline(CARD_RDEV(card));
4920         qdio_free(CARD_DDEV(card));
4921         rc = ccw_device_set_online(CARD_RDEV(card));
4922         if (rc)
4923                 goto retriable;
4924         rc = ccw_device_set_online(CARD_WDEV(card));
4925         if (rc)
4926                 goto retriable;
4927         rc = ccw_device_set_online(CARD_DDEV(card));
4928         if (rc)
4929                 goto retriable;
4930 retriable:
4931         if (rc == -ERESTARTSYS) {
4932                 QETH_DBF_TEXT(SETUP, 2, "break1");
4933                 return rc;
4934         } else if (rc) {
4935                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4936                 if (--retries < 0)
4937                         goto out;
4938                 else
4939                         goto retry;
4940         }
4941         qeth_determine_capabilities(card);
4942         qeth_init_tokens(card);
4943         qeth_init_func_level(card);
4944         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4945         if (rc == -ERESTARTSYS) {
4946                 QETH_DBF_TEXT(SETUP, 2, "break2");
4947                 return rc;
4948         } else if (rc) {
4949                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4950                 if (--retries < 0)
4951                         goto out;
4952                 else
4953                         goto retry;
4954         }
4955         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4956         if (rc == -ERESTARTSYS) {
4957                 QETH_DBF_TEXT(SETUP, 2, "break3");
4958                 return rc;
4959         } else if (rc) {
4960                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4961                 if (--retries < 0)
4962                         goto out;
4963                 else
4964                         goto retry;
4965         }
4966         card->read_or_write_problem = 0;
4967         rc = qeth_mpc_initialize(card);
4968         if (rc) {
4969                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4970                 goto out;
4971         }
4972 
4973         card->options.ipa4.supported_funcs = 0;
4974         card->options.adp.supported_funcs = 0;
4975         card->options.sbp.supported_funcs = 0;
4976         card->info.diagass_support = 0;
4977         qeth_query_ipassists(card, QETH_PROT_IPV4);
4978         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4979                 qeth_query_setadapterparms(card);
4980         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4981                 qeth_query_setdiagass(card);
4982         return 0;
4983 out:
4984         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4985                 "an error on the device\n");
4986         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4987                 dev_name(&card->gdev->dev), rc);
4988         return rc;
4989 }
4990 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4991 
4992 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4993                 struct qdio_buffer_element *element,
4994                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4995 {
4996         struct page *page = virt_to_page(element->addr);
4997         if (*pskb == NULL) {
4998                 if (qethbuffer->rx_skb) {
4999                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5000                         *pskb = qethbuffer->rx_skb;
5001                         qethbuffer->rx_skb = NULL;
5002                 } else {
5003                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5004                         if (!(*pskb))
5005                                 return -ENOMEM;
5006                 }
5007 
5008                 skb_reserve(*pskb, ETH_HLEN);
5009                 if (data_len <= QETH_RX_PULL_LEN) {
5010                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5011                                 data_len);
5012                 } else {
5013                         get_page(page);
5014                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5015                                element->addr + offset, QETH_RX_PULL_LEN);
5016                         skb_fill_page_desc(*pskb, *pfrag, page,
5017                                 offset + QETH_RX_PULL_LEN,
5018                                 data_len - QETH_RX_PULL_LEN);
5019                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5020                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5021                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5022                         (*pfrag)++;
5023                 }
5024         } else {
5025                 get_page(page);
5026                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5027                 (*pskb)->data_len += data_len;
5028                 (*pskb)->len      += data_len;
5029                 (*pskb)->truesize += data_len;
5030                 (*pfrag)++;
5031         }
5032 
5033 
5034         return 0;
5035 }
5036 
5037 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5038                 struct qeth_qdio_buffer *qethbuffer,
5039                 struct qdio_buffer_element **__element, int *__offset,
5040                 struct qeth_hdr **hdr)
5041 {
5042         struct qdio_buffer_element *element = *__element;
5043         struct qdio_buffer *buffer = qethbuffer->buffer;
5044         int offset = *__offset;
5045         struct sk_buff *skb = NULL;
5046         int skb_len = 0;
5047         void *data_ptr;
5048         int data_len;
5049         int headroom = 0;
5050         int use_rx_sg = 0;
5051         int frag = 0;
5052 
5053         /* qeth_hdr must not cross element boundaries */
5054         if (element->length < offset + sizeof(struct qeth_hdr)) {
5055                 if (qeth_is_last_sbale(element))
5056                         return NULL;
5057                 element++;
5058                 offset = 0;
5059                 if (element->length < sizeof(struct qeth_hdr))
5060                         return NULL;
5061         }
5062         *hdr = element->addr + offset;
5063 
5064         offset += sizeof(struct qeth_hdr);
5065         switch ((*hdr)->hdr.l2.id) {
5066         case QETH_HEADER_TYPE_LAYER2:
5067                 skb_len = (*hdr)->hdr.l2.pkt_length;
5068                 break;
5069         case QETH_HEADER_TYPE_LAYER3:
5070                 skb_len = (*hdr)->hdr.l3.length;
5071                 headroom = ETH_HLEN;
5072                 break;
5073         case QETH_HEADER_TYPE_OSN:
5074                 skb_len = (*hdr)->hdr.osn.pdu_length;
5075                 headroom = sizeof(struct qeth_hdr);
5076                 break;
5077         default:
5078                 break;
5079         }
5080 
5081         if (!skb_len)
5082                 return NULL;
5083 
5084         if (((skb_len >= card->options.rx_sg_cb) &&
5085              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5086              (!atomic_read(&card->force_alloc_skb))) ||
5087             (card->options.cq == QETH_CQ_ENABLED)) {
5088                 use_rx_sg = 1;
5089         } else {
5090                 skb = dev_alloc_skb(skb_len + headroom);
5091                 if (!skb)
5092                         goto no_mem;
5093                 if (headroom)
5094                         skb_reserve(skb, headroom);
5095         }
5096 
5097         data_ptr = element->addr + offset;
5098         while (skb_len) {
5099                 data_len = min(skb_len, (int)(element->length - offset));
5100                 if (data_len) {
5101                         if (use_rx_sg) {
5102                                 if (qeth_create_skb_frag(qethbuffer, element,
5103                                     &skb, offset, &frag, data_len))
5104                                         goto no_mem;
5105                         } else {
5106                                 memcpy(skb_put(skb, data_len), data_ptr,
5107                                         data_len);
5108                         }
5109                 }
5110                 skb_len -= data_len;
5111                 if (skb_len) {
5112                         if (qeth_is_last_sbale(element)) {
5113                                 QETH_CARD_TEXT(card, 4, "unexeob");
5114                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5115                                 dev_kfree_skb_any(skb);
5116                                 card->stats.rx_errors++;
5117                                 return NULL;
5118                         }
5119                         element++;
5120                         offset = 0;
5121                         data_ptr = element->addr;
5122                 } else {
5123                         offset += data_len;
5124                 }
5125         }
5126         *__element = element;
5127         *__offset = offset;
5128         if (use_rx_sg && card->options.performance_stats) {
5129                 card->perf_stats.sg_skbs_rx++;
5130                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5131         }
5132         return skb;
5133 no_mem:
5134         if (net_ratelimit()) {
5135                 QETH_CARD_TEXT(card, 2, "noskbmem");
5136         }
5137         card->stats.rx_dropped++;
5138         return NULL;
5139 }
5140 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5141 
5142 static void qeth_unregister_dbf_views(void)
5143 {
5144         int x;
5145         for (x = 0; x < QETH_DBF_INFOS; x++) {
5146                 debug_unregister(qeth_dbf[x].id);
5147                 qeth_dbf[x].id = NULL;
5148         }
5149 }
5150 
5151 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5152 {
5153         char dbf_txt_buf[32];
5154         va_list args;
5155 
5156         if (!debug_level_enabled(id, level))
5157                 return;
5158         va_start(args, fmt);
5159         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5160         va_end(args);
5161         debug_text_event(id, level, dbf_txt_buf);
5162 }
5163 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5164 
5165 static int qeth_register_dbf_views(void)
5166 {
5167         int ret;
5168         int x;
5169 
5170         for (x = 0; x < QETH_DBF_INFOS; x++) {
5171                 /* register the areas */
5172                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5173                                                 qeth_dbf[x].pages,
5174                                                 qeth_dbf[x].areas,
5175                                                 qeth_dbf[x].len);
5176                 if (qeth_dbf[x].id == NULL) {
5177                         qeth_unregister_dbf_views();
5178                         return -ENOMEM;
5179                 }
5180 
5181                 /* register a view */
5182                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5183                 if (ret) {
5184                         qeth_unregister_dbf_views();
5185                         return ret;
5186                 }
5187 
5188                 /* set a passing level */
5189                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5190         }
5191 
5192         return 0;
5193 }
5194 
5195 int qeth_core_load_discipline(struct qeth_card *card,
5196                 enum qeth_discipline_id discipline)
5197 {
5198         int rc = 0;
5199         mutex_lock(&qeth_mod_mutex);
5200         switch (discipline) {
5201         case QETH_DISCIPLINE_LAYER3:
5202                 card->discipline = try_then_request_module(
5203                         symbol_get(qeth_l3_discipline), "qeth_l3");
5204                 break;
5205         case QETH_DISCIPLINE_LAYER2:
5206                 card->discipline = try_then_request_module(
5207                         symbol_get(qeth_l2_discipline), "qeth_l2");
5208                 break;
5209         }
5210         if (!card->discipline) {
5211                 dev_err(&card->gdev->dev, "There is no kernel module to "
5212                         "support discipline %d\n", discipline);
5213                 rc = -EINVAL;
5214         }
5215         mutex_unlock(&qeth_mod_mutex);
5216         return rc;
5217 }
5218 
5219 void qeth_core_free_discipline(struct qeth_card *card)
5220 {
5221         if (card->options.layer2)
5222                 symbol_put(qeth_l2_discipline);
5223         else
5224                 symbol_put(qeth_l3_discipline);
5225         card->discipline = NULL;
5226 }
5227 
5228 static const struct device_type qeth_generic_devtype = {
5229         .name = "qeth_generic",
5230         .groups = qeth_generic_attr_groups,
5231 };
5232 static const struct device_type qeth_osn_devtype = {
5233         .name = "qeth_osn",
5234         .groups = qeth_osn_attr_groups,
5235 };
5236 
5237 #define DBF_NAME_LEN    20
5238 
5239 struct qeth_dbf_entry {
5240         char dbf_name[DBF_NAME_LEN];
5241         debug_info_t *dbf_info;
5242         struct list_head dbf_list;
5243 };
5244 
5245 static LIST_HEAD(qeth_dbf_list);
5246 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5247 
5248 static debug_info_t *qeth_get_dbf_entry(char *name)
5249 {
5250         struct qeth_dbf_entry *entry;
5251         debug_info_t *rc = NULL;
5252 
5253         mutex_lock(&qeth_dbf_list_mutex);
5254         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5255                 if (strcmp(entry->dbf_name, name) == 0) {
5256                         rc = entry->dbf_info;
5257                         break;
5258                 }
5259         }
5260         mutex_unlock(&qeth_dbf_list_mutex);
5261         return rc;
5262 }
5263 
5264 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5265 {
5266         struct qeth_dbf_entry *new_entry;
5267 
5268         card->debug = debug_register(name, 2, 1, 8);
5269         if (!card->debug) {
5270                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5271                 goto err;
5272         }
5273         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5274                 goto err_dbg;
5275         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5276         if (!new_entry)
5277                 goto err_dbg;
5278         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5279         new_entry->dbf_info = card->debug;
5280         mutex_lock(&qeth_dbf_list_mutex);
5281         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5282         mutex_unlock(&qeth_dbf_list_mutex);
5283 
5284         return 0;
5285 
5286 err_dbg:
5287         debug_unregister(card->debug);
5288 err:
5289         return -ENOMEM;
5290 }
5291 
5292 static void qeth_clear_dbf_list(void)
5293 {
5294         struct qeth_dbf_entry *entry, *tmp;
5295 
5296         mutex_lock(&qeth_dbf_list_mutex);
5297         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5298                 list_del(&entry->dbf_list);
5299                 debug_unregister(entry->dbf_info);
5300                 kfree(entry);
5301         }
5302         mutex_unlock(&qeth_dbf_list_mutex);
5303 }
5304 
5305 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5306 {
5307         struct qeth_card *card;
5308         struct device *dev;
5309         int rc;
5310         unsigned long flags;
5311         char dbf_name[DBF_NAME_LEN];
5312 
5313         QETH_DBF_TEXT(SETUP, 2, "probedev");
5314 
5315         dev = &gdev->dev;
5316         if (!get_device(dev))
5317                 return -ENODEV;
5318 
5319         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5320 
5321         card = qeth_alloc_card();
5322         if (!card) {
5323                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5324                 rc = -ENOMEM;
5325                 goto err_dev;
5326         }
5327 
5328         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5329                 dev_name(&gdev->dev));
5330         card->debug = qeth_get_dbf_entry(dbf_name);
5331         if (!card->debug) {
5332                 rc = qeth_add_dbf_entry(card, dbf_name);
5333                 if (rc)
5334                         goto err_card;
5335         }
5336 
5337         card->read.ccwdev  = gdev->cdev[0];
5338         card->write.ccwdev = gdev->cdev[1];
5339         card->data.ccwdev  = gdev->cdev[2];
5340         dev_set_drvdata(&gdev->dev, card);
5341         card->gdev = gdev;
5342         gdev->cdev[0]->handler = qeth_irq;
5343         gdev->cdev[1]->handler = qeth_irq;
5344         gdev->cdev[2]->handler = qeth_irq;
5345 
5346         rc = qeth_determine_card_type(card);
5347         if (rc) {
5348                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5349                 goto err_card;
5350         }
5351         rc = qeth_setup_card(card);
5352         if (rc) {
5353                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5354                 goto err_card;
5355         }
5356 
5357         if (card->info.type == QETH_CARD_TYPE_OSN)
5358                 gdev->dev.type = &qeth_osn_devtype;
5359         else
5360                 gdev->dev.type = &qeth_generic_devtype;
5361 
5362         switch (card->info.type) {
5363         case QETH_CARD_TYPE_OSN:
5364         case QETH_CARD_TYPE_OSM:
5365                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5366                 if (rc)
5367                         goto err_card;
5368                 rc = card->discipline->setup(card->gdev);
5369                 if (rc)
5370                         goto err_disc;
5371         case QETH_CARD_TYPE_OSD:
5372         case QETH_CARD_TYPE_OSX:
5373         default:
5374                 break;
5375         }
5376 
5377         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5378         list_add_tail(&card->list, &qeth_core_card_list.list);
5379         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5380 
5381         qeth_determine_capabilities(card);
5382         return 0;
5383 
5384 err_disc:
5385         qeth_core_free_discipline(card);
5386 err_card:
5387         qeth_core_free_card(card);
5388 err_dev:
5389         put_device(dev);
5390         return rc;
5391 }
5392 
5393 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5394 {
5395         unsigned long flags;
5396         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5397 
5398         QETH_DBF_TEXT(SETUP, 2, "removedv");
5399 
5400         if (card->discipline) {
5401                 card->discipline->remove(gdev);
5402                 qeth_core_free_discipline(card);
5403         }
5404 
5405         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5406         list_del(&card->list);
5407         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5408         qeth_core_free_card(card);
5409         dev_set_drvdata(&gdev->dev, NULL);
5410         put_device(&gdev->dev);
5411         return;
5412 }
5413 
5414 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5415 {
5416         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5417         int rc = 0;
5418         int def_discipline;
5419 
5420         if (!card->discipline) {
5421                 if (card->info.type == QETH_CARD_TYPE_IQD)
5422                         def_discipline = QETH_DISCIPLINE_LAYER3;
5423                 else
5424                         def_discipline = QETH_DISCIPLINE_LAYER2;
5425                 rc = qeth_core_load_discipline(card, def_discipline);
5426                 if (rc)
5427                         goto err;
5428                 rc = card->discipline->setup(card->gdev);
5429                 if (rc)
5430                         goto err;
5431         }
5432         rc = card->discipline->set_online(gdev);
5433 err:
5434         return rc;
5435 }
5436 
5437 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5438 {
5439         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5440         return card->discipline->set_offline(gdev);
5441 }
5442 
5443 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5444 {
5445         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5446         if (card->discipline && card->discipline->shutdown)
5447                 card->discipline->shutdown(gdev);
5448 }
5449 
5450 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5451 {
5452         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5453         if (card->discipline && card->discipline->prepare)
5454                 return card->discipline->prepare(gdev);
5455         return 0;
5456 }
5457 
5458 static void qeth_core_complete(struct ccwgroup_device *gdev)
5459 {
5460         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5461         if (card->discipline && card->discipline->complete)
5462                 card->discipline->complete(gdev);
5463 }
5464 
5465 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5466 {
5467         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5468         if (card->discipline && card->discipline->freeze)
5469                 return card->discipline->freeze(gdev);
5470         return 0;
5471 }
5472 
5473 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5474 {
5475         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5476         if (card->discipline && card->discipline->thaw)
5477                 return card->discipline->thaw(gdev);
5478         return 0;
5479 }
5480 
5481 static int qeth_core_restore(struct ccwgroup_device *gdev)
5482 {
5483         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5484         if (card->discipline && card->discipline->restore)
5485                 return card->discipline->restore(gdev);
5486         return 0;
5487 }
5488 
5489 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5490         .driver = {
5491                 .owner = THIS_MODULE,
5492                 .name = "qeth",
5493         },
5494         .setup = qeth_core_probe_device,
5495         .remove = qeth_core_remove_device,
5496         .set_online = qeth_core_set_online,
5497         .set_offline = qeth_core_set_offline,
5498         .shutdown = qeth_core_shutdown,
5499         .prepare = qeth_core_prepare,
5500         .complete = qeth_core_complete,
5501         .freeze = qeth_core_freeze,
5502         .thaw = qeth_core_thaw,
5503         .restore = qeth_core_restore,
5504 };
5505 
5506 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5507                                             const char *buf, size_t count)
5508 {
5509         int err;
5510 
5511         err = ccwgroup_create_dev(qeth_core_root_dev,
5512                                   &qeth_core_ccwgroup_driver, 3, buf);
5513 
5514         return err ? err : count;
5515 }
5516 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5517 
5518 static struct attribute *qeth_drv_attrs[] = {
5519         &driver_attr_group.attr,
5520         NULL,
5521 };
5522 static struct attribute_group qeth_drv_attr_group = {
5523         .attrs = qeth_drv_attrs,
5524 };
5525 static const struct attribute_group *qeth_drv_attr_groups[] = {
5526         &qeth_drv_attr_group,
5527         NULL,
5528 };
5529 
5530 static struct {
5531         const char str[ETH_GSTRING_LEN];
5532 } qeth_ethtool_stats_keys[] = {
5533 /*  0 */{"rx skbs"},
5534         {"rx buffers"},
5535         {"tx skbs"},
5536         {"tx buffers"},
5537         {"tx skbs no packing"},
5538         {"tx buffers no packing"},
5539         {"tx skbs packing"},
5540         {"tx buffers packing"},
5541         {"tx sg skbs"},
5542         {"tx sg frags"},
5543 /* 10 */{"rx sg skbs"},
5544         {"rx sg frags"},
5545         {"rx sg page allocs"},
5546         {"tx large kbytes"},
5547         {"tx large count"},
5548         {"tx pk state ch n->p"},
5549         {"tx pk state ch p->n"},
5550         {"tx pk watermark low"},
5551         {"tx pk watermark high"},
5552         {"queue 0 buffer usage"},
5553 /* 20 */{"queue 1 buffer usage"},
5554         {"queue 2 buffer usage"},
5555         {"queue 3 buffer usage"},
5556         {"rx poll time"},
5557         {"rx poll count"},
5558         {"rx do_QDIO time"},
5559         {"rx do_QDIO count"},
5560         {"tx handler time"},
5561         {"tx handler count"},
5562         {"tx time"},
5563 /* 30 */{"tx count"},
5564         {"tx do_QDIO time"},
5565         {"tx do_QDIO count"},
5566         {"tx csum"},
5567         {"tx lin"},
5568         {"cq handler count"},
5569         {"cq handler time"}
5570 };
5571 
5572 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5573 {
5574         switch (stringset) {
5575         case ETH_SS_STATS:
5576                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5577         default:
5578                 return -EINVAL;
5579         }
5580 }
5581 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5582 
5583 void qeth_core_get_ethtool_stats(struct net_device *dev,
5584                 struct ethtool_stats *stats, u64 *data)
5585 {
5586         struct qeth_card *card = dev->ml_priv;
5587         data[0] = card->stats.rx_packets -
5588                                 card->perf_stats.initial_rx_packets;
5589         data[1] = card->perf_stats.bufs_rec;
5590         data[2] = card->stats.tx_packets -
5591                                 card->perf_stats.initial_tx_packets;
5592         data[3] = card->perf_stats.bufs_sent;
5593         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5594                         - card->perf_stats.skbs_sent_pack;
5595         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5596         data[6] = card->perf_stats.skbs_sent_pack;
5597         data[7] = card->perf_stats.bufs_sent_pack;
5598         data[8] = card->perf_stats.sg_skbs_sent;
5599         data[9] = card->perf_stats.sg_frags_sent;
5600         data[10] = card->perf_stats.sg_skbs_rx;
5601         data[11] = card->perf_stats.sg_frags_rx;
5602         data[12] = card->perf_stats.sg_alloc_page_rx;
5603         data[13] = (card->perf_stats.large_send_bytes >> 10);
5604         data[14] = card->perf_stats.large_send_cnt;
5605         data[15] = card->perf_stats.sc_dp_p;
5606         data[16] = card->perf_stats.sc_p_dp;
5607         data[17] = QETH_LOW_WATERMARK_PACK;
5608         data[18] = QETH_HIGH_WATERMARK_PACK;
5609         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5610         data[20] = (card->qdio.no_out_queues > 1) ?
5611                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5612         data[21] = (card->qdio.no_out_queues > 2) ?
5613                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5614         data[22] = (card->qdio.no_out_queues > 3) ?
5615                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5616         data[23] = card->perf_stats.inbound_time;
5617         data[24] = card->perf_stats.inbound_cnt;
5618         data[25] = card->perf_stats.inbound_do_qdio_time;
5619         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5620         data[27] = card->perf_stats.outbound_handler_time;
5621         data[28] = card->perf_stats.outbound_handler_cnt;
5622         data[29] = card->perf_stats.outbound_time;
5623         data[30] = card->perf_stats.outbound_cnt;
5624         data[31] = card->perf_stats.outbound_do_qdio_time;
5625         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5626         data[33] = card->perf_stats.tx_csum;
5627         data[34] = card->perf_stats.tx_lin;
5628         data[35] = card->perf_stats.cq_cnt;
5629         data[36] = card->perf_stats.cq_time;
5630 }
5631 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5632 
5633 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5634 {
5635         switch (stringset) {
5636         case ETH_SS_STATS:
5637                 memcpy(data, &qeth_ethtool_stats_keys,
5638                         sizeof(qeth_ethtool_stats_keys));
5639                 break;
5640         default:
5641                 WARN_ON(1);
5642                 break;
5643         }
5644 }
5645 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5646 
5647 void qeth_core_get_drvinfo(struct net_device *dev,
5648                 struct ethtool_drvinfo *info)
5649 {
5650         struct qeth_card *card = dev->ml_priv;
5651 
5652         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5653                 sizeof(info->driver));
5654         strlcpy(info->version, "1.0", sizeof(info->version));
5655         strlcpy(info->fw_version, card->info.mcl_level,
5656                 sizeof(info->fw_version));
5657         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5658                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5659 }
5660 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5661 
5662 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5663 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5664 /* Always advertize and support all speeds up to specified, and only one     */
5665 /* specified port type.                                                      */
5666 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5667                                 int maxspeed, int porttype)
5668 {
5669         int port_sup, port_adv, spd_sup, spd_adv;
5670 
5671         switch (porttype) {
5672         case PORT_TP:
5673                 port_sup = SUPPORTED_TP;
5674                 port_adv = ADVERTISED_TP;
5675                 break;
5676         case PORT_FIBRE:
5677                 port_sup = SUPPORTED_FIBRE;
5678                 port_adv = ADVERTISED_FIBRE;
5679                 break;
5680         default:
5681                 port_sup = SUPPORTED_TP;
5682                 port_adv = ADVERTISED_TP;
5683                 WARN_ON_ONCE(1);
5684         }
5685 
5686         /* "Fallthrough" case'es ordered from high to low result in setting  */
5687         /* flags cumulatively, starting from the specified speed and down to */
5688         /* the lowest possible.                                              */
5689         spd_sup = 0;
5690         spd_adv = 0;
5691         switch (maxspeed) {
5692         case SPEED_10000:
5693                 spd_sup |= SUPPORTED_10000baseT_Full;
5694                 spd_adv |= ADVERTISED_10000baseT_Full;
5695         case SPEED_1000:
5696                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5697                 spd_adv |= ADVERTISED_1000baseT_Half |
5698                                                 ADVERTISED_1000baseT_Full;
5699         case SPEED_100:
5700                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5701                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5702         case SPEED_10:
5703                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5704                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5705         break;
5706         default:
5707                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5708                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5709                 WARN_ON_ONCE(1);
5710         }
5711         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5712         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5713 }
5714 
5715 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5716                                         struct ethtool_cmd *ecmd)
5717 {
5718         struct qeth_card *card = netdev->ml_priv;
5719         enum qeth_link_types link_type;
5720         struct carrier_info carrier_info;
5721         u32 speed;
5722 
5723         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5724                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5725         else
5726                 link_type = card->info.link_type;
5727 
5728         ecmd->transceiver = XCVR_INTERNAL;
5729         ecmd->duplex = DUPLEX_FULL;
5730         ecmd->autoneg = AUTONEG_ENABLE;
5731 
5732         switch (link_type) {
5733         case QETH_LINK_TYPE_FAST_ETH:
5734         case QETH_LINK_TYPE_LANE_ETH100:
5735                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5736                 speed = SPEED_100;
5737                 ecmd->port = PORT_TP;
5738                 break;
5739 
5740         case QETH_LINK_TYPE_GBIT_ETH:
5741         case QETH_LINK_TYPE_LANE_ETH1000:
5742                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5743                 speed = SPEED_1000;
5744                 ecmd->port = PORT_FIBRE;
5745                 break;
5746 
5747         case QETH_LINK_TYPE_10GBIT_ETH:
5748                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5749                 speed = SPEED_10000;
5750                 ecmd->port = PORT_FIBRE;
5751                 break;
5752 
5753         default:
5754                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5755                 speed = SPEED_10;
5756                 ecmd->port = PORT_TP;
5757         }
5758         ethtool_cmd_speed_set(ecmd, speed);
5759 
5760         /* Check if we can obtain more accurate information.     */
5761         /* If QUERY_CARD_INFO command is not supported or fails, */
5762         /* just return the heuristics that was filled above.     */
5763         if (qeth_query_card_info(card, &carrier_info) != 0)
5764                 return 0;
5765 
5766         netdev_dbg(netdev,
5767         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5768                         carrier_info.card_type,
5769                         carrier_info.port_mode,
5770                         carrier_info.port_speed);
5771 
5772         /* Update attributes for which we've obtained more authoritative */
5773         /* information, leave the rest the way they where filled above.  */
5774         switch (carrier_info.card_type) {
5775         case CARD_INFO_TYPE_1G_COPPER_A:
5776         case CARD_INFO_TYPE_1G_COPPER_B:
5777                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5778                 ecmd->port = PORT_TP;
5779                 break;
5780         case CARD_INFO_TYPE_1G_FIBRE_A:
5781         case CARD_INFO_TYPE_1G_FIBRE_B:
5782                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5783                 ecmd->port = PORT_FIBRE;
5784                 break;
5785         case CARD_INFO_TYPE_10G_FIBRE_A:
5786         case CARD_INFO_TYPE_10G_FIBRE_B:
5787                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5788                 ecmd->port = PORT_FIBRE;
5789                 break;
5790         }
5791 
5792         switch (carrier_info.port_mode) {
5793         case CARD_INFO_PORTM_FULLDUPLEX:
5794                 ecmd->duplex = DUPLEX_FULL;
5795                 break;
5796         case CARD_INFO_PORTM_HALFDUPLEX:
5797                 ecmd->duplex = DUPLEX_HALF;
5798                 break;
5799         }
5800 
5801         switch (carrier_info.port_speed) {
5802         case CARD_INFO_PORTS_10M:
5803                 speed = SPEED_10;
5804                 break;
5805         case CARD_INFO_PORTS_100M:
5806                 speed = SPEED_100;
5807                 break;
5808         case CARD_INFO_PORTS_1G:
5809                 speed = SPEED_1000;
5810                 break;
5811         case CARD_INFO_PORTS_10G:
5812                 speed = SPEED_10000;
5813                 break;
5814         }
5815         ethtool_cmd_speed_set(ecmd, speed);
5816 
5817         return 0;
5818 }
5819 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5820 
5821 static int __init qeth_core_init(void)
5822 {
5823         int rc;
5824 
5825         pr_info("loading core functions\n");
5826         INIT_LIST_HEAD(&qeth_core_card_list.list);
5827         INIT_LIST_HEAD(&qeth_dbf_list);
5828         rwlock_init(&qeth_core_card_list.rwlock);
5829         mutex_init(&qeth_mod_mutex);
5830 
5831         qeth_wq = create_singlethread_workqueue("qeth_wq");
5832 
5833         rc = qeth_register_dbf_views();
5834         if (rc)
5835                 goto out_err;
5836         qeth_core_root_dev = root_device_register("qeth");
5837         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
5838         if (rc)
5839                 goto register_err;
5840         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5841                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5842         if (!qeth_core_header_cache) {
5843                 rc = -ENOMEM;
5844                 goto slab_err;
5845         }
5846         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5847                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5848         if (!qeth_qdio_outbuf_cache) {
5849                 rc = -ENOMEM;
5850                 goto cqslab_err;
5851         }
5852         rc = ccw_driver_register(&qeth_ccw_driver);
5853         if (rc)
5854                 goto ccw_err;
5855         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5856         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5857         if (rc)
5858                 goto ccwgroup_err;
5859 
5860         return 0;
5861 
5862 ccwgroup_err:
5863         ccw_driver_unregister(&qeth_ccw_driver);
5864 ccw_err:
5865         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5866 cqslab_err:
5867         kmem_cache_destroy(qeth_core_header_cache);
5868 slab_err:
5869         root_device_unregister(qeth_core_root_dev);
5870 register_err:
5871         qeth_unregister_dbf_views();
5872 out_err:
5873         pr_err("Initializing the qeth device driver failed\n");
5874         return rc;
5875 }
5876 
5877 static void __exit qeth_core_exit(void)
5878 {
5879         qeth_clear_dbf_list();
5880         destroy_workqueue(qeth_wq);
5881         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5882         ccw_driver_unregister(&qeth_ccw_driver);
5883         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5884         kmem_cache_destroy(qeth_core_header_cache);
5885         root_device_unregister(qeth_core_root_dev);
5886         qeth_unregister_dbf_views();
5887         pr_info("core functions removed\n");
5888 }
5889 
5890 module_init(qeth_core_init);
5891 module_exit(qeth_core_exit);
5892 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5893 MODULE_DESCRIPTION("qeth core functions");
5894 MODULE_LICENSE("GPL");
5895 

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