Version:  2.0.40 2.2.26 2.4.37 2.6.39 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

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 
 24 #include <asm/ebcdic.h>
 25 #include <asm/io.h>
 26 #include <asm/sysinfo.h>
 27 #include <asm/compat.h>
 28 
 29 #include "qeth_core.h"
 30 
 31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
 32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
 33         /*                   N  P  A    M  L  V                      H  */
 34         [QETH_DBF_SETUP] = {"qeth_setup",
 35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
 36         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
 37                             &debug_sprintf_view, NULL},
 38         [QETH_DBF_CTRL]  = {"qeth_control",
 39                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
 40 };
 41 EXPORT_SYMBOL_GPL(qeth_dbf);
 42 
 43 struct qeth_card_list_struct qeth_core_card_list;
 44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
 45 struct kmem_cache *qeth_core_header_cache;
 46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
 47 static struct kmem_cache *qeth_qdio_outbuf_cache;
 48 
 49 static struct device *qeth_core_root_dev;
 50 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
 51 static struct lock_class_key qdio_out_skb_queue_key;
 52 static struct mutex qeth_mod_mutex;
 53 
 54 static void qeth_send_control_data_cb(struct qeth_channel *,
 55                         struct qeth_cmd_buffer *);
 56 static int qeth_issue_next_read(struct qeth_card *);
 57 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
 58 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
 59 static void qeth_free_buffer_pool(struct qeth_card *);
 60 static int qeth_qdio_establish(struct qeth_card *);
 61 static void qeth_free_qdio_buffers(struct qeth_card *);
 62 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
 63                 struct qeth_qdio_out_buffer *buf,
 64                 enum iucv_tx_notify notification);
 65 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
 66 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 67                 struct qeth_qdio_out_buffer *buf,
 68                 enum qeth_qdio_buffer_states newbufstate);
 69 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
 70 
 71 struct workqueue_struct *qeth_wq;
 72 EXPORT_SYMBOL_GPL(qeth_wq);
 73 
 74 static void qeth_close_dev_handler(struct work_struct *work)
 75 {
 76         struct qeth_card *card;
 77 
 78         card = container_of(work, struct qeth_card, close_dev_work);
 79         QETH_CARD_TEXT(card, 2, "cldevhdl");
 80         rtnl_lock();
 81         dev_close(card->dev);
 82         rtnl_unlock();
 83         ccwgroup_set_offline(card->gdev);
 84 }
 85 
 86 void qeth_close_dev(struct qeth_card *card)
 87 {
 88         QETH_CARD_TEXT(card, 2, "cldevsubm");
 89         queue_work(qeth_wq, &card->close_dev_work);
 90 }
 91 EXPORT_SYMBOL_GPL(qeth_close_dev);
 92 
 93 static inline const char *qeth_get_cardname(struct qeth_card *card)
 94 {
 95         if (card->info.guestlan) {
 96                 switch (card->info.type) {
 97                 case QETH_CARD_TYPE_OSD:
 98                         return " Virtual NIC QDIO";
 99                 case QETH_CARD_TYPE_IQD:
100                         return " Virtual NIC Hiper";
101                 case QETH_CARD_TYPE_OSM:
102                         return " Virtual NIC QDIO - OSM";
103                 case QETH_CARD_TYPE_OSX:
104                         return " Virtual NIC QDIO - OSX";
105                 default:
106                         return " unknown";
107                 }
108         } else {
109                 switch (card->info.type) {
110                 case QETH_CARD_TYPE_OSD:
111                         return " OSD Express";
112                 case QETH_CARD_TYPE_IQD:
113                         return " HiperSockets";
114                 case QETH_CARD_TYPE_OSN:
115                         return " OSN QDIO";
116                 case QETH_CARD_TYPE_OSM:
117                         return " OSM QDIO";
118                 case QETH_CARD_TYPE_OSX:
119                         return " OSX QDIO";
120                 default:
121                         return " unknown";
122                 }
123         }
124         return " n/a";
125 }
126 
127 /* max length to be returned: 14 */
128 const char *qeth_get_cardname_short(struct qeth_card *card)
129 {
130         if (card->info.guestlan) {
131                 switch (card->info.type) {
132                 case QETH_CARD_TYPE_OSD:
133                         return "Virt.NIC QDIO";
134                 case QETH_CARD_TYPE_IQD:
135                         return "Virt.NIC Hiper";
136                 case QETH_CARD_TYPE_OSM:
137                         return "Virt.NIC OSM";
138                 case QETH_CARD_TYPE_OSX:
139                         return "Virt.NIC OSX";
140                 default:
141                         return "unknown";
142                 }
143         } else {
144                 switch (card->info.type) {
145                 case QETH_CARD_TYPE_OSD:
146                         switch (card->info.link_type) {
147                         case QETH_LINK_TYPE_FAST_ETH:
148                                 return "OSD_100";
149                         case QETH_LINK_TYPE_HSTR:
150                                 return "HSTR";
151                         case QETH_LINK_TYPE_GBIT_ETH:
152                                 return "OSD_1000";
153                         case QETH_LINK_TYPE_10GBIT_ETH:
154                                 return "OSD_10GIG";
155                         case QETH_LINK_TYPE_LANE_ETH100:
156                                 return "OSD_FE_LANE";
157                         case QETH_LINK_TYPE_LANE_TR:
158                                 return "OSD_TR_LANE";
159                         case QETH_LINK_TYPE_LANE_ETH1000:
160                                 return "OSD_GbE_LANE";
161                         case QETH_LINK_TYPE_LANE:
162                                 return "OSD_ATM_LANE";
163                         default:
164                                 return "OSD_Express";
165                         }
166                 case QETH_CARD_TYPE_IQD:
167                         return "HiperSockets";
168                 case QETH_CARD_TYPE_OSN:
169                         return "OSN";
170                 case QETH_CARD_TYPE_OSM:
171                         return "OSM_1000";
172                 case QETH_CARD_TYPE_OSX:
173                         return "OSX_10GIG";
174                 default:
175                         return "unknown";
176                 }
177         }
178         return "n/a";
179 }
180 
181 void qeth_set_recovery_task(struct qeth_card *card)
182 {
183         card->recovery_task = current;
184 }
185 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
186 
187 void qeth_clear_recovery_task(struct qeth_card *card)
188 {
189         card->recovery_task = NULL;
190 }
191 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
192 
193 static bool qeth_is_recovery_task(const struct qeth_card *card)
194 {
195         return card->recovery_task == current;
196 }
197 
198 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
199                          int clear_start_mask)
200 {
201         unsigned long flags;
202 
203         spin_lock_irqsave(&card->thread_mask_lock, flags);
204         card->thread_allowed_mask = threads;
205         if (clear_start_mask)
206                 card->thread_start_mask &= threads;
207         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
208         wake_up(&card->wait_q);
209 }
210 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
211 
212 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
213 {
214         unsigned long flags;
215         int rc = 0;
216 
217         spin_lock_irqsave(&card->thread_mask_lock, flags);
218         rc = (card->thread_running_mask & threads);
219         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
220         return rc;
221 }
222 EXPORT_SYMBOL_GPL(qeth_threads_running);
223 
224 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
225 {
226         if (qeth_is_recovery_task(card))
227                 return 0;
228         return wait_event_interruptible(card->wait_q,
229                         qeth_threads_running(card, threads) == 0);
230 }
231 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
232 
233 void qeth_clear_working_pool_list(struct qeth_card *card)
234 {
235         struct qeth_buffer_pool_entry *pool_entry, *tmp;
236 
237         QETH_CARD_TEXT(card, 5, "clwrklst");
238         list_for_each_entry_safe(pool_entry, tmp,
239                             &card->qdio.in_buf_pool.entry_list, list){
240                         list_del(&pool_entry->list);
241         }
242 }
243 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
244 
245 static int qeth_alloc_buffer_pool(struct qeth_card *card)
246 {
247         struct qeth_buffer_pool_entry *pool_entry;
248         void *ptr;
249         int i, j;
250 
251         QETH_CARD_TEXT(card, 5, "alocpool");
252         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
253                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
254                 if (!pool_entry) {
255                         qeth_free_buffer_pool(card);
256                         return -ENOMEM;
257                 }
258                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
259                         ptr = (void *) __get_free_page(GFP_KERNEL);
260                         if (!ptr) {
261                                 while (j > 0)
262                                         free_page((unsigned long)
263                                                   pool_entry->elements[--j]);
264                                 kfree(pool_entry);
265                                 qeth_free_buffer_pool(card);
266                                 return -ENOMEM;
267                         }
268                         pool_entry->elements[j] = ptr;
269                 }
270                 list_add(&pool_entry->init_list,
271                          &card->qdio.init_pool.entry_list);
272         }
273         return 0;
274 }
275 
276 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
277 {
278         QETH_CARD_TEXT(card, 2, "realcbp");
279 
280         if ((card->state != CARD_STATE_DOWN) &&
281             (card->state != CARD_STATE_RECOVER))
282                 return -EPERM;
283 
284         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
285         qeth_clear_working_pool_list(card);
286         qeth_free_buffer_pool(card);
287         card->qdio.in_buf_pool.buf_count = bufcnt;
288         card->qdio.init_pool.buf_count = bufcnt;
289         return qeth_alloc_buffer_pool(card);
290 }
291 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
292 
293 static inline int qeth_cq_init(struct qeth_card *card)
294 {
295         int rc;
296 
297         if (card->options.cq == QETH_CQ_ENABLED) {
298                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
299                 memset(card->qdio.c_q->qdio_bufs, 0,
300                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
301                 card->qdio.c_q->next_buf_to_init = 127;
302                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
303                              card->qdio.no_in_queues - 1, 0,
304                              127);
305                 if (rc) {
306                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
307                         goto out;
308                 }
309         }
310         rc = 0;
311 out:
312         return rc;
313 }
314 
315 static inline int qeth_alloc_cq(struct qeth_card *card)
316 {
317         int rc;
318 
319         if (card->options.cq == QETH_CQ_ENABLED) {
320                 int i;
321                 struct qdio_outbuf_state *outbuf_states;
322 
323                 QETH_DBF_TEXT(SETUP, 2, "cqon");
324                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
325                                          GFP_KERNEL);
326                 if (!card->qdio.c_q) {
327                         rc = -1;
328                         goto kmsg_out;
329                 }
330                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
331 
332                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
333                         card->qdio.c_q->bufs[i].buffer =
334                                 &card->qdio.c_q->qdio_bufs[i];
335                 }
336 
337                 card->qdio.no_in_queues = 2;
338 
339                 card->qdio.out_bufstates =
340                         kzalloc(card->qdio.no_out_queues *
341                                 QDIO_MAX_BUFFERS_PER_Q *
342                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
343                 outbuf_states = card->qdio.out_bufstates;
344                 if (outbuf_states == NULL) {
345                         rc = -1;
346                         goto free_cq_out;
347                 }
348                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
349                         card->qdio.out_qs[i]->bufstates = outbuf_states;
350                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
351                 }
352         } else {
353                 QETH_DBF_TEXT(SETUP, 2, "nocq");
354                 card->qdio.c_q = NULL;
355                 card->qdio.no_in_queues = 1;
356         }
357         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
358         rc = 0;
359 out:
360         return rc;
361 free_cq_out:
362         kfree(card->qdio.c_q);
363         card->qdio.c_q = NULL;
364 kmsg_out:
365         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
366         goto out;
367 }
368 
369 static inline void qeth_free_cq(struct qeth_card *card)
370 {
371         if (card->qdio.c_q) {
372                 --card->qdio.no_in_queues;
373                 kfree(card->qdio.c_q);
374                 card->qdio.c_q = NULL;
375         }
376         kfree(card->qdio.out_bufstates);
377         card->qdio.out_bufstates = NULL;
378 }
379 
380 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
381         int delayed) {
382         enum iucv_tx_notify n;
383 
384         switch (sbalf15) {
385         case 0:
386                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
387                 break;
388         case 4:
389         case 16:
390         case 17:
391         case 18:
392                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
393                         TX_NOTIFY_UNREACHABLE;
394                 break;
395         default:
396                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
397                         TX_NOTIFY_GENERALERROR;
398                 break;
399         }
400 
401         return n;
402 }
403 
404 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
405         int bidx, int forced_cleanup)
406 {
407         if (q->card->options.cq != QETH_CQ_ENABLED)
408                 return;
409 
410         if (q->bufs[bidx]->next_pending != NULL) {
411                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
412                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
413 
414                 while (c) {
415                         if (forced_cleanup ||
416                             atomic_read(&c->state) ==
417                               QETH_QDIO_BUF_HANDLED_DELAYED) {
418                                 struct qeth_qdio_out_buffer *f = c;
419                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
420                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
421                                 /* release here to avoid interleaving between
422                                    outbound tasklet and inbound tasklet
423                                    regarding notifications and lifecycle */
424                                 qeth_release_skbs(c);
425 
426                                 c = f->next_pending;
427                                 WARN_ON_ONCE(head->next_pending != f);
428                                 head->next_pending = c;
429                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
430                         } else {
431                                 head = c;
432                                 c = c->next_pending;
433                         }
434 
435                 }
436         }
437         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
438                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
439                 /* for recovery situations */
440                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
441                 qeth_init_qdio_out_buf(q, bidx);
442                 QETH_CARD_TEXT(q->card, 2, "clprecov");
443         }
444 }
445 
446 
447 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
448                 unsigned long phys_aob_addr) {
449         struct qaob *aob;
450         struct qeth_qdio_out_buffer *buffer;
451         enum iucv_tx_notify notification;
452 
453         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
454         QETH_CARD_TEXT(card, 5, "haob");
455         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
456         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
457         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
458 
459         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
460                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
461                 notification = TX_NOTIFY_OK;
462         } else {
463                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
464                                                         QETH_QDIO_BUF_PENDING);
465                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
466                 notification = TX_NOTIFY_DELAYED_OK;
467         }
468 
469         if (aob->aorc != 0)  {
470                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
471                 notification = qeth_compute_cq_notification(aob->aorc, 1);
472         }
473         qeth_notify_skbs(buffer->q, buffer, notification);
474 
475         buffer->aob = NULL;
476         qeth_clear_output_buffer(buffer->q, buffer,
477                                  QETH_QDIO_BUF_HANDLED_DELAYED);
478 
479         /* from here on: do not touch buffer anymore */
480         qdio_release_aob(aob);
481 }
482 
483 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
484 {
485         return card->options.cq == QETH_CQ_ENABLED &&
486             card->qdio.c_q != NULL &&
487             queue != 0 &&
488             queue == card->qdio.no_in_queues - 1;
489 }
490 
491 
492 static int qeth_issue_next_read(struct qeth_card *card)
493 {
494         int rc;
495         struct qeth_cmd_buffer *iob;
496 
497         QETH_CARD_TEXT(card, 5, "issnxrd");
498         if (card->read.state != CH_STATE_UP)
499                 return -EIO;
500         iob = qeth_get_buffer(&card->read);
501         if (!iob) {
502                 dev_warn(&card->gdev->dev, "The qeth device driver "
503                         "failed to recover an error on the device\n");
504                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
505                         "available\n", dev_name(&card->gdev->dev));
506                 return -ENOMEM;
507         }
508         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
509         QETH_CARD_TEXT(card, 6, "noirqpnd");
510         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
511                               (addr_t) iob, 0, 0);
512         if (rc) {
513                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
514                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
515                 atomic_set(&card->read.irq_pending, 0);
516                 card->read_or_write_problem = 1;
517                 qeth_schedule_recovery(card);
518                 wake_up(&card->wait_q);
519         }
520         return rc;
521 }
522 
523 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
524 {
525         struct qeth_reply *reply;
526 
527         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
528         if (reply) {
529                 atomic_set(&reply->refcnt, 1);
530                 atomic_set(&reply->received, 0);
531                 reply->card = card;
532         }
533         return reply;
534 }
535 
536 static void qeth_get_reply(struct qeth_reply *reply)
537 {
538         WARN_ON(atomic_read(&reply->refcnt) <= 0);
539         atomic_inc(&reply->refcnt);
540 }
541 
542 static void qeth_put_reply(struct qeth_reply *reply)
543 {
544         WARN_ON(atomic_read(&reply->refcnt) <= 0);
545         if (atomic_dec_and_test(&reply->refcnt))
546                 kfree(reply);
547 }
548 
549 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
550                 struct qeth_card *card)
551 {
552         char *ipa_name;
553         int com = cmd->hdr.command;
554         ipa_name = qeth_get_ipa_cmd_name(com);
555         if (rc)
556                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
557                                 "x%X \"%s\"\n",
558                                 ipa_name, com, dev_name(&card->gdev->dev),
559                                 QETH_CARD_IFNAME(card), rc,
560                                 qeth_get_ipa_msg(rc));
561         else
562                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
563                                 ipa_name, com, dev_name(&card->gdev->dev),
564                                 QETH_CARD_IFNAME(card));
565 }
566 
567 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
568                 struct qeth_cmd_buffer *iob)
569 {
570         struct qeth_ipa_cmd *cmd = NULL;
571 
572         QETH_CARD_TEXT(card, 5, "chkipad");
573         if (IS_IPA(iob->data)) {
574                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
575                 if (IS_IPA_REPLY(cmd)) {
576                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
577                             cmd->hdr.command != IPA_CMD_DELCCID &&
578                             cmd->hdr.command != IPA_CMD_MODCCID &&
579                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
580                                 qeth_issue_ipa_msg(cmd,
581                                                 cmd->hdr.return_code, card);
582                         return cmd;
583                 } else {
584                         switch (cmd->hdr.command) {
585                         case IPA_CMD_STOPLAN:
586                                 if (cmd->hdr.return_code ==
587                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
588                                         dev_err(&card->gdev->dev,
589                                            "Interface %s is down because the "
590                                            "adjacent port is no longer in "
591                                            "reflective relay mode\n",
592                                            QETH_CARD_IFNAME(card));
593                                         qeth_close_dev(card);
594                                 } else {
595                                         dev_warn(&card->gdev->dev,
596                                            "The link for interface %s on CHPID"
597                                            " 0x%X failed\n",
598                                            QETH_CARD_IFNAME(card),
599                                            card->info.chpid);
600                                         qeth_issue_ipa_msg(cmd,
601                                                 cmd->hdr.return_code, card);
602                                 }
603                                 card->lan_online = 0;
604                                 if (card->dev && netif_carrier_ok(card->dev))
605                                         netif_carrier_off(card->dev);
606                                 return NULL;
607                         case IPA_CMD_STARTLAN:
608                                 dev_info(&card->gdev->dev,
609                                            "The link for %s on CHPID 0x%X has"
610                                            " been restored\n",
611                                            QETH_CARD_IFNAME(card),
612                                            card->info.chpid);
613                                 netif_carrier_on(card->dev);
614                                 card->lan_online = 1;
615                                 if (card->info.hwtrap)
616                                         card->info.hwtrap = 2;
617                                 qeth_schedule_recovery(card);
618                                 return NULL;
619                         case IPA_CMD_SETBRIDGEPORT:
620                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
621                                 if (card->discipline->control_event_handler
622                                                                 (card, cmd))
623                                         return cmd;
624                                 else
625                                         return NULL;
626                         case IPA_CMD_MODCCID:
627                                 return cmd;
628                         case IPA_CMD_REGISTER_LOCAL_ADDR:
629                                 QETH_CARD_TEXT(card, 3, "irla");
630                                 break;
631                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
632                                 QETH_CARD_TEXT(card, 3, "urla");
633                                 break;
634                         default:
635                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
636                                            "but not a reply!\n");
637                                 break;
638                         }
639                 }
640         }
641         return cmd;
642 }
643 
644 void qeth_clear_ipacmd_list(struct qeth_card *card)
645 {
646         struct qeth_reply *reply, *r;
647         unsigned long flags;
648 
649         QETH_CARD_TEXT(card, 4, "clipalst");
650 
651         spin_lock_irqsave(&card->lock, flags);
652         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
653                 qeth_get_reply(reply);
654                 reply->rc = -EIO;
655                 atomic_inc(&reply->received);
656                 list_del_init(&reply->list);
657                 wake_up(&reply->wait_q);
658                 qeth_put_reply(reply);
659         }
660         spin_unlock_irqrestore(&card->lock, flags);
661         atomic_set(&card->write.irq_pending, 0);
662 }
663 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
664 
665 static int qeth_check_idx_response(struct qeth_card *card,
666         unsigned char *buffer)
667 {
668         if (!buffer)
669                 return 0;
670 
671         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
672         if ((buffer[2] & 0xc0) == 0xc0) {
673                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
674                            "with cause code 0x%02x%s\n",
675                            buffer[4],
676                            ((buffer[4] == 0x22) ?
677                             " -- try another portname" : ""));
678                 QETH_CARD_TEXT(card, 2, "ckidxres");
679                 QETH_CARD_TEXT(card, 2, " idxterm");
680                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
681                 if (buffer[4] == 0xf6) {
682                         dev_err(&card->gdev->dev,
683                         "The qeth device is not configured "
684                         "for the OSI layer required by z/VM\n");
685                         return -EPERM;
686                 }
687                 return -EIO;
688         }
689         return 0;
690 }
691 
692 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
693                 __u32 len)
694 {
695         struct qeth_card *card;
696 
697         card = CARD_FROM_CDEV(channel->ccwdev);
698         QETH_CARD_TEXT(card, 4, "setupccw");
699         if (channel == &card->read)
700                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
701         else
702                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
703         channel->ccw.count = len;
704         channel->ccw.cda = (__u32) __pa(iob);
705 }
706 
707 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
708 {
709         __u8 index;
710 
711         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
712         index = channel->io_buf_no;
713         do {
714                 if (channel->iob[index].state == BUF_STATE_FREE) {
715                         channel->iob[index].state = BUF_STATE_LOCKED;
716                         channel->io_buf_no = (channel->io_buf_no + 1) %
717                                 QETH_CMD_BUFFER_NO;
718                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
719                         return channel->iob + index;
720                 }
721                 index = (index + 1) % QETH_CMD_BUFFER_NO;
722         } while (index != channel->io_buf_no);
723 
724         return NULL;
725 }
726 
727 void qeth_release_buffer(struct qeth_channel *channel,
728                 struct qeth_cmd_buffer *iob)
729 {
730         unsigned long flags;
731 
732         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
733         spin_lock_irqsave(&channel->iob_lock, flags);
734         memset(iob->data, 0, QETH_BUFSIZE);
735         iob->state = BUF_STATE_FREE;
736         iob->callback = qeth_send_control_data_cb;
737         iob->rc = 0;
738         spin_unlock_irqrestore(&channel->iob_lock, flags);
739         wake_up(&channel->wait_q);
740 }
741 EXPORT_SYMBOL_GPL(qeth_release_buffer);
742 
743 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
744 {
745         struct qeth_cmd_buffer *buffer = NULL;
746         unsigned long flags;
747 
748         spin_lock_irqsave(&channel->iob_lock, flags);
749         buffer = __qeth_get_buffer(channel);
750         spin_unlock_irqrestore(&channel->iob_lock, flags);
751         return buffer;
752 }
753 
754 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
755 {
756         struct qeth_cmd_buffer *buffer;
757         wait_event(channel->wait_q,
758                    ((buffer = qeth_get_buffer(channel)) != NULL));
759         return buffer;
760 }
761 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
762 
763 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
764 {
765         int cnt;
766 
767         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
768                 qeth_release_buffer(channel, &channel->iob[cnt]);
769         channel->buf_no = 0;
770         channel->io_buf_no = 0;
771 }
772 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
773 
774 static void qeth_send_control_data_cb(struct qeth_channel *channel,
775                   struct qeth_cmd_buffer *iob)
776 {
777         struct qeth_card *card;
778         struct qeth_reply *reply, *r;
779         struct qeth_ipa_cmd *cmd;
780         unsigned long flags;
781         int keep_reply;
782         int rc = 0;
783 
784         card = CARD_FROM_CDEV(channel->ccwdev);
785         QETH_CARD_TEXT(card, 4, "sndctlcb");
786         rc = qeth_check_idx_response(card, iob->data);
787         switch (rc) {
788         case 0:
789                 break;
790         case -EIO:
791                 qeth_clear_ipacmd_list(card);
792                 qeth_schedule_recovery(card);
793                 /* fall through */
794         default:
795                 goto out;
796         }
797 
798         cmd = qeth_check_ipa_data(card, iob);
799         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
800                 goto out;
801         /*in case of OSN : check if cmd is set */
802         if (card->info.type == QETH_CARD_TYPE_OSN &&
803             cmd &&
804             cmd->hdr.command != IPA_CMD_STARTLAN &&
805             card->osn_info.assist_cb != NULL) {
806                 card->osn_info.assist_cb(card->dev, cmd);
807                 goto out;
808         }
809 
810         spin_lock_irqsave(&card->lock, flags);
811         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
812                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
813                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
814                         qeth_get_reply(reply);
815                         list_del_init(&reply->list);
816                         spin_unlock_irqrestore(&card->lock, flags);
817                         keep_reply = 0;
818                         if (reply->callback != NULL) {
819                                 if (cmd) {
820                                         reply->offset = (__u16)((char *)cmd -
821                                                         (char *)iob->data);
822                                         keep_reply = reply->callback(card,
823                                                         reply,
824                                                         (unsigned long)cmd);
825                                 } else
826                                         keep_reply = reply->callback(card,
827                                                         reply,
828                                                         (unsigned long)iob);
829                         }
830                         if (cmd)
831                                 reply->rc = (u16) cmd->hdr.return_code;
832                         else if (iob->rc)
833                                 reply->rc = iob->rc;
834                         if (keep_reply) {
835                                 spin_lock_irqsave(&card->lock, flags);
836                                 list_add_tail(&reply->list,
837                                               &card->cmd_waiter_list);
838                                 spin_unlock_irqrestore(&card->lock, flags);
839                         } else {
840                                 atomic_inc(&reply->received);
841                                 wake_up(&reply->wait_q);
842                         }
843                         qeth_put_reply(reply);
844                         goto out;
845                 }
846         }
847         spin_unlock_irqrestore(&card->lock, flags);
848 out:
849         memcpy(&card->seqno.pdu_hdr_ack,
850                 QETH_PDU_HEADER_SEQ_NO(iob->data),
851                 QETH_SEQ_NO_LENGTH);
852         qeth_release_buffer(channel, iob);
853 }
854 
855 static int qeth_setup_channel(struct qeth_channel *channel)
856 {
857         int cnt;
858 
859         QETH_DBF_TEXT(SETUP, 2, "setupch");
860         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
861                 channel->iob[cnt].data =
862                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
863                 if (channel->iob[cnt].data == NULL)
864                         break;
865                 channel->iob[cnt].state = BUF_STATE_FREE;
866                 channel->iob[cnt].channel = channel;
867                 channel->iob[cnt].callback = qeth_send_control_data_cb;
868                 channel->iob[cnt].rc = 0;
869         }
870         if (cnt < QETH_CMD_BUFFER_NO) {
871                 while (cnt-- > 0)
872                         kfree(channel->iob[cnt].data);
873                 return -ENOMEM;
874         }
875         channel->buf_no = 0;
876         channel->io_buf_no = 0;
877         atomic_set(&channel->irq_pending, 0);
878         spin_lock_init(&channel->iob_lock);
879 
880         init_waitqueue_head(&channel->wait_q);
881         return 0;
882 }
883 
884 static int qeth_set_thread_start_bit(struct qeth_card *card,
885                 unsigned long thread)
886 {
887         unsigned long flags;
888 
889         spin_lock_irqsave(&card->thread_mask_lock, flags);
890         if (!(card->thread_allowed_mask & thread) ||
891               (card->thread_start_mask & thread)) {
892                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
893                 return -EPERM;
894         }
895         card->thread_start_mask |= thread;
896         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
897         return 0;
898 }
899 
900 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
901 {
902         unsigned long flags;
903 
904         spin_lock_irqsave(&card->thread_mask_lock, flags);
905         card->thread_start_mask &= ~thread;
906         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
907         wake_up(&card->wait_q);
908 }
909 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
910 
911 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
912 {
913         unsigned long flags;
914 
915         spin_lock_irqsave(&card->thread_mask_lock, flags);
916         card->thread_running_mask &= ~thread;
917         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
918         wake_up(&card->wait_q);
919 }
920 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
921 
922 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
923 {
924         unsigned long flags;
925         int rc = 0;
926 
927         spin_lock_irqsave(&card->thread_mask_lock, flags);
928         if (card->thread_start_mask & thread) {
929                 if ((card->thread_allowed_mask & thread) &&
930                     !(card->thread_running_mask & thread)) {
931                         rc = 1;
932                         card->thread_start_mask &= ~thread;
933                         card->thread_running_mask |= thread;
934                 } else
935                         rc = -EPERM;
936         }
937         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
938         return rc;
939 }
940 
941 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
942 {
943         int rc = 0;
944 
945         wait_event(card->wait_q,
946                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
947         return rc;
948 }
949 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
950 
951 void qeth_schedule_recovery(struct qeth_card *card)
952 {
953         QETH_CARD_TEXT(card, 2, "startrec");
954         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
955                 schedule_work(&card->kernel_thread_starter);
956 }
957 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
958 
959 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
960 {
961         int dstat, cstat;
962         char *sense;
963         struct qeth_card *card;
964 
965         sense = (char *) irb->ecw;
966         cstat = irb->scsw.cmd.cstat;
967         dstat = irb->scsw.cmd.dstat;
968         card = CARD_FROM_CDEV(cdev);
969 
970         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
971                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
972                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
973                 QETH_CARD_TEXT(card, 2, "CGENCHK");
974                 dev_warn(&cdev->dev, "The qeth device driver "
975                         "failed to recover an error on the device\n");
976                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
977                         dev_name(&cdev->dev), dstat, cstat);
978                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
979                                 16, 1, irb, 64, 1);
980                 return 1;
981         }
982 
983         if (dstat & DEV_STAT_UNIT_CHECK) {
984                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
985                     SENSE_RESETTING_EVENT_FLAG) {
986                         QETH_CARD_TEXT(card, 2, "REVIND");
987                         return 1;
988                 }
989                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
990                     SENSE_COMMAND_REJECT_FLAG) {
991                         QETH_CARD_TEXT(card, 2, "CMDREJi");
992                         return 1;
993                 }
994                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
995                         QETH_CARD_TEXT(card, 2, "AFFE");
996                         return 1;
997                 }
998                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
999                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1000                         return 0;
1001                 }
1002                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1003                         return 1;
1004         }
1005         return 0;
1006 }
1007 
1008 static long __qeth_check_irb_error(struct ccw_device *cdev,
1009                 unsigned long intparm, struct irb *irb)
1010 {
1011         struct qeth_card *card;
1012 
1013         card = CARD_FROM_CDEV(cdev);
1014 
1015         if (!IS_ERR(irb))
1016                 return 0;
1017 
1018         switch (PTR_ERR(irb)) {
1019         case -EIO:
1020                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1021                         dev_name(&cdev->dev));
1022                 QETH_CARD_TEXT(card, 2, "ckirberr");
1023                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1024                 break;
1025         case -ETIMEDOUT:
1026                 dev_warn(&cdev->dev, "A hardware operation timed out"
1027                         " on the device\n");
1028                 QETH_CARD_TEXT(card, 2, "ckirberr");
1029                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1030                 if (intparm == QETH_RCD_PARM) {
1031                         if (card && (card->data.ccwdev == cdev)) {
1032                                 card->data.state = CH_STATE_DOWN;
1033                                 wake_up(&card->wait_q);
1034                         }
1035                 }
1036                 break;
1037         default:
1038                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1039                         dev_name(&cdev->dev), PTR_ERR(irb));
1040                 QETH_CARD_TEXT(card, 2, "ckirberr");
1041                 QETH_CARD_TEXT(card, 2, "  rc???");
1042         }
1043         return PTR_ERR(irb);
1044 }
1045 
1046 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1047                 struct irb *irb)
1048 {
1049         int rc;
1050         int cstat, dstat;
1051         struct qeth_cmd_buffer *buffer;
1052         struct qeth_channel *channel;
1053         struct qeth_card *card;
1054         struct qeth_cmd_buffer *iob;
1055         __u8 index;
1056 
1057         if (__qeth_check_irb_error(cdev, intparm, irb))
1058                 return;
1059         cstat = irb->scsw.cmd.cstat;
1060         dstat = irb->scsw.cmd.dstat;
1061 
1062         card = CARD_FROM_CDEV(cdev);
1063         if (!card)
1064                 return;
1065 
1066         QETH_CARD_TEXT(card, 5, "irq");
1067 
1068         if (card->read.ccwdev == cdev) {
1069                 channel = &card->read;
1070                 QETH_CARD_TEXT(card, 5, "read");
1071         } else if (card->write.ccwdev == cdev) {
1072                 channel = &card->write;
1073                 QETH_CARD_TEXT(card, 5, "write");
1074         } else {
1075                 channel = &card->data;
1076                 QETH_CARD_TEXT(card, 5, "data");
1077         }
1078         atomic_set(&channel->irq_pending, 0);
1079 
1080         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1081                 channel->state = CH_STATE_STOPPED;
1082 
1083         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1084                 channel->state = CH_STATE_HALTED;
1085 
1086         /*let's wake up immediately on data channel*/
1087         if ((channel == &card->data) && (intparm != 0) &&
1088             (intparm != QETH_RCD_PARM))
1089                 goto out;
1090 
1091         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1092                 QETH_CARD_TEXT(card, 6, "clrchpar");
1093                 /* we don't have to handle this further */
1094                 intparm = 0;
1095         }
1096         if (intparm == QETH_HALT_CHANNEL_PARM) {
1097                 QETH_CARD_TEXT(card, 6, "hltchpar");
1098                 /* we don't have to handle this further */
1099                 intparm = 0;
1100         }
1101         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1102             (dstat & DEV_STAT_UNIT_CHECK) ||
1103             (cstat)) {
1104                 if (irb->esw.esw0.erw.cons) {
1105                         dev_warn(&channel->ccwdev->dev,
1106                                 "The qeth device driver failed to recover "
1107                                 "an error on the device\n");
1108                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1109                                 "0x%X dstat 0x%X\n",
1110                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1111                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1112                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1113                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1114                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1115                 }
1116                 if (intparm == QETH_RCD_PARM) {
1117                         channel->state = CH_STATE_DOWN;
1118                         goto out;
1119                 }
1120                 rc = qeth_get_problem(cdev, irb);
1121                 if (rc) {
1122                         qeth_clear_ipacmd_list(card);
1123                         qeth_schedule_recovery(card);
1124                         goto out;
1125                 }
1126         }
1127 
1128         if (intparm == QETH_RCD_PARM) {
1129                 channel->state = CH_STATE_RCD_DONE;
1130                 goto out;
1131         }
1132         if (intparm) {
1133                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1134                 buffer->state = BUF_STATE_PROCESSED;
1135         }
1136         if (channel == &card->data)
1137                 return;
1138         if (channel == &card->read &&
1139             channel->state == CH_STATE_UP)
1140                 qeth_issue_next_read(card);
1141 
1142         iob = channel->iob;
1143         index = channel->buf_no;
1144         while (iob[index].state == BUF_STATE_PROCESSED) {
1145                 if (iob[index].callback != NULL)
1146                         iob[index].callback(channel, iob + index);
1147 
1148                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1149         }
1150         channel->buf_no = index;
1151 out:
1152         wake_up(&card->wait_q);
1153         return;
1154 }
1155 
1156 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1157                 struct qeth_qdio_out_buffer *buf,
1158                 enum iucv_tx_notify notification)
1159 {
1160         struct sk_buff *skb;
1161 
1162         if (skb_queue_empty(&buf->skb_list))
1163                 goto out;
1164         skb = skb_peek(&buf->skb_list);
1165         while (skb) {
1166                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1167                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1168                 if (skb->protocol == ETH_P_AF_IUCV) {
1169                         if (skb->sk) {
1170                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1171                                 iucv->sk_txnotify(skb, notification);
1172                         }
1173                 }
1174                 if (skb_queue_is_last(&buf->skb_list, skb))
1175                         skb = NULL;
1176                 else
1177                         skb = skb_queue_next(&buf->skb_list, skb);
1178         }
1179 out:
1180         return;
1181 }
1182 
1183 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1184 {
1185         struct sk_buff *skb;
1186         struct iucv_sock *iucv;
1187         int notify_general_error = 0;
1188 
1189         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1190                 notify_general_error = 1;
1191 
1192         /* release may never happen from within CQ tasklet scope */
1193         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1194 
1195         skb = skb_dequeue(&buf->skb_list);
1196         while (skb) {
1197                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1198                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1199                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1200                         if (skb->sk) {
1201                                 iucv = iucv_sk(skb->sk);
1202                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1203                         }
1204                 }
1205                 atomic_dec(&skb->users);
1206                 dev_kfree_skb_any(skb);
1207                 skb = skb_dequeue(&buf->skb_list);
1208         }
1209 }
1210 
1211 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1212                 struct qeth_qdio_out_buffer *buf,
1213                 enum qeth_qdio_buffer_states newbufstate)
1214 {
1215         int i;
1216 
1217         /* is PCI flag set on buffer? */
1218         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1219                 atomic_dec(&queue->set_pci_flags_count);
1220 
1221         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1222                 qeth_release_skbs(buf);
1223         }
1224         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1225                 if (buf->buffer->element[i].addr && buf->is_header[i])
1226                         kmem_cache_free(qeth_core_header_cache,
1227                                 buf->buffer->element[i].addr);
1228                 buf->is_header[i] = 0;
1229                 buf->buffer->element[i].length = 0;
1230                 buf->buffer->element[i].addr = NULL;
1231                 buf->buffer->element[i].eflags = 0;
1232                 buf->buffer->element[i].sflags = 0;
1233         }
1234         buf->buffer->element[15].eflags = 0;
1235         buf->buffer->element[15].sflags = 0;
1236         buf->next_element_to_fill = 0;
1237         atomic_set(&buf->state, newbufstate);
1238 }
1239 
1240 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1241 {
1242         int j;
1243 
1244         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1245                 if (!q->bufs[j])
1246                         continue;
1247                 qeth_cleanup_handled_pending(q, j, 1);
1248                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1249                 if (free) {
1250                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1251                         q->bufs[j] = NULL;
1252                 }
1253         }
1254 }
1255 
1256 void qeth_clear_qdio_buffers(struct qeth_card *card)
1257 {
1258         int i;
1259 
1260         QETH_CARD_TEXT(card, 2, "clearqdbf");
1261         /* clear outbound buffers to free skbs */
1262         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1263                 if (card->qdio.out_qs[i]) {
1264                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1265                 }
1266         }
1267 }
1268 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1269 
1270 static void qeth_free_buffer_pool(struct qeth_card *card)
1271 {
1272         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1273         int i = 0;
1274         list_for_each_entry_safe(pool_entry, tmp,
1275                                  &card->qdio.init_pool.entry_list, init_list){
1276                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1277                         free_page((unsigned long)pool_entry->elements[i]);
1278                 list_del(&pool_entry->init_list);
1279                 kfree(pool_entry);
1280         }
1281 }
1282 
1283 static void qeth_free_qdio_buffers(struct qeth_card *card)
1284 {
1285         int i, j;
1286 
1287         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1288                 QETH_QDIO_UNINITIALIZED)
1289                 return;
1290 
1291         qeth_free_cq(card);
1292         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1293         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1294                 if (card->qdio.in_q->bufs[j].rx_skb)
1295                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1296         }
1297         kfree(card->qdio.in_q);
1298         card->qdio.in_q = NULL;
1299         /* inbound buffer pool */
1300         qeth_free_buffer_pool(card);
1301         /* free outbound qdio_qs */
1302         if (card->qdio.out_qs) {
1303                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1304                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1305                         kfree(card->qdio.out_qs[i]);
1306                 }
1307                 kfree(card->qdio.out_qs);
1308                 card->qdio.out_qs = NULL;
1309         }
1310 }
1311 
1312 static void qeth_clean_channel(struct qeth_channel *channel)
1313 {
1314         int cnt;
1315 
1316         QETH_DBF_TEXT(SETUP, 2, "freech");
1317         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1318                 kfree(channel->iob[cnt].data);
1319 }
1320 
1321 static void qeth_set_single_write_queues(struct qeth_card *card)
1322 {
1323         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1324             (card->qdio.no_out_queues == 4))
1325                 qeth_free_qdio_buffers(card);
1326 
1327         card->qdio.no_out_queues = 1;
1328         if (card->qdio.default_out_queue != 0)
1329                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1330 
1331         card->qdio.default_out_queue = 0;
1332 }
1333 
1334 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1335 {
1336         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1337             (card->qdio.no_out_queues == 1)) {
1338                 qeth_free_qdio_buffers(card);
1339                 card->qdio.default_out_queue = 2;
1340         }
1341         card->qdio.no_out_queues = 4;
1342 }
1343 
1344 static void qeth_update_from_chp_desc(struct qeth_card *card)
1345 {
1346         struct ccw_device *ccwdev;
1347         struct channelPath_dsc {
1348                 u8 flags;
1349                 u8 lsn;
1350                 u8 desc;
1351                 u8 chpid;
1352                 u8 swla;
1353                 u8 zeroes;
1354                 u8 chla;
1355                 u8 chpp;
1356         } *chp_dsc;
1357 
1358         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1359 
1360         ccwdev = card->data.ccwdev;
1361         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1362         if (!chp_dsc)
1363                 goto out;
1364 
1365         card->info.func_level = 0x4100 + chp_dsc->desc;
1366         if (card->info.type == QETH_CARD_TYPE_IQD)
1367                 goto out;
1368 
1369         /* CHPP field bit 6 == 1 -> single queue */
1370         if ((chp_dsc->chpp & 0x02) == 0x02)
1371                 qeth_set_single_write_queues(card);
1372         else
1373                 qeth_set_multiple_write_queues(card);
1374 out:
1375         kfree(chp_dsc);
1376         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1377         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1378 }
1379 
1380 static void qeth_init_qdio_info(struct qeth_card *card)
1381 {
1382         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1383         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1384         /* inbound */
1385         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1386         if (card->info.type == QETH_CARD_TYPE_IQD)
1387                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1388         else
1389                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1390         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1391         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1392         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1393 }
1394 
1395 static void qeth_set_intial_options(struct qeth_card *card)
1396 {
1397         card->options.route4.type = NO_ROUTER;
1398         card->options.route6.type = NO_ROUTER;
1399         card->options.fake_broadcast = 0;
1400         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1401         card->options.performance_stats = 0;
1402         card->options.rx_sg_cb = QETH_RX_SG_CB;
1403         card->options.isolation = ISOLATION_MODE_NONE;
1404         card->options.cq = QETH_CQ_DISABLED;
1405 }
1406 
1407 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1408 {
1409         unsigned long flags;
1410         int rc = 0;
1411 
1412         spin_lock_irqsave(&card->thread_mask_lock, flags);
1413         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1414                         (u8) card->thread_start_mask,
1415                         (u8) card->thread_allowed_mask,
1416                         (u8) card->thread_running_mask);
1417         rc = (card->thread_start_mask & thread);
1418         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1419         return rc;
1420 }
1421 
1422 static void qeth_start_kernel_thread(struct work_struct *work)
1423 {
1424         struct task_struct *ts;
1425         struct qeth_card *card = container_of(work, struct qeth_card,
1426                                         kernel_thread_starter);
1427         QETH_CARD_TEXT(card , 2, "strthrd");
1428 
1429         if (card->read.state != CH_STATE_UP &&
1430             card->write.state != CH_STATE_UP)
1431                 return;
1432         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1433                 ts = kthread_run(card->discipline->recover, (void *)card,
1434                                 "qeth_recover");
1435                 if (IS_ERR(ts)) {
1436                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1437                         qeth_clear_thread_running_bit(card,
1438                                 QETH_RECOVER_THREAD);
1439                 }
1440         }
1441 }
1442 
1443 static int qeth_setup_card(struct qeth_card *card)
1444 {
1445 
1446         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1447         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1448 
1449         card->read.state  = CH_STATE_DOWN;
1450         card->write.state = CH_STATE_DOWN;
1451         card->data.state  = CH_STATE_DOWN;
1452         card->state = CARD_STATE_DOWN;
1453         card->lan_online = 0;
1454         card->read_or_write_problem = 0;
1455         card->dev = NULL;
1456         spin_lock_init(&card->vlanlock);
1457         spin_lock_init(&card->mclock);
1458         spin_lock_init(&card->lock);
1459         spin_lock_init(&card->ip_lock);
1460         spin_lock_init(&card->thread_mask_lock);
1461         mutex_init(&card->conf_mutex);
1462         mutex_init(&card->discipline_mutex);
1463         card->thread_start_mask = 0;
1464         card->thread_allowed_mask = 0;
1465         card->thread_running_mask = 0;
1466         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1467         INIT_LIST_HEAD(&card->ip_list);
1468         INIT_LIST_HEAD(card->ip_tbd_list);
1469         INIT_LIST_HEAD(&card->cmd_waiter_list);
1470         init_waitqueue_head(&card->wait_q);
1471         /* initial options */
1472         qeth_set_intial_options(card);
1473         /* IP address takeover */
1474         INIT_LIST_HEAD(&card->ipato.entries);
1475         card->ipato.enabled = 0;
1476         card->ipato.invert4 = 0;
1477         card->ipato.invert6 = 0;
1478         /* init QDIO stuff */
1479         qeth_init_qdio_info(card);
1480         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1481         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1482         return 0;
1483 }
1484 
1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1486 {
1487         struct qeth_card *card = container_of(slr, struct qeth_card,
1488                                         qeth_service_level);
1489         if (card->info.mcl_level[0])
1490                 seq_printf(m, "qeth: %s firmware level %s\n",
1491                         CARD_BUS_ID(card), card->info.mcl_level);
1492 }
1493 
1494 static struct qeth_card *qeth_alloc_card(void)
1495 {
1496         struct qeth_card *card;
1497 
1498         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1499         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1500         if (!card)
1501                 goto out;
1502         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1503         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1504         if (!card->ip_tbd_list) {
1505                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1506                 goto out_card;
1507         }
1508         if (qeth_setup_channel(&card->read))
1509                 goto out_ip;
1510         if (qeth_setup_channel(&card->write))
1511                 goto out_channel;
1512         card->options.layer2 = -1;
1513         card->qeth_service_level.seq_print = qeth_core_sl_print;
1514         register_service_level(&card->qeth_service_level);
1515         return card;
1516 
1517 out_channel:
1518         qeth_clean_channel(&card->read);
1519 out_ip:
1520         kfree(card->ip_tbd_list);
1521 out_card:
1522         kfree(card);
1523 out:
1524         return NULL;
1525 }
1526 
1527 static int qeth_determine_card_type(struct qeth_card *card)
1528 {
1529         int i = 0;
1530 
1531         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1532 
1533         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1534         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1535         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1536                 if ((CARD_RDEV(card)->id.dev_type ==
1537                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1538                     (CARD_RDEV(card)->id.dev_model ==
1539                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1540                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1541                         card->qdio.no_out_queues =
1542                                 known_devices[i][QETH_QUEUE_NO_IND];
1543                         card->qdio.no_in_queues = 1;
1544                         card->info.is_multicast_different =
1545                                 known_devices[i][QETH_MULTICAST_IND];
1546                         qeth_update_from_chp_desc(card);
1547                         return 0;
1548                 }
1549                 i++;
1550         }
1551         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1552         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1553                 "unknown type\n");
1554         return -ENOENT;
1555 }
1556 
1557 static int qeth_clear_channel(struct qeth_channel *channel)
1558 {
1559         unsigned long flags;
1560         struct qeth_card *card;
1561         int rc;
1562 
1563         card = CARD_FROM_CDEV(channel->ccwdev);
1564         QETH_CARD_TEXT(card, 3, "clearch");
1565         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1566         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1567         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1568 
1569         if (rc)
1570                 return rc;
1571         rc = wait_event_interruptible_timeout(card->wait_q,
1572                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1573         if (rc == -ERESTARTSYS)
1574                 return rc;
1575         if (channel->state != CH_STATE_STOPPED)
1576                 return -ETIME;
1577         channel->state = CH_STATE_DOWN;
1578         return 0;
1579 }
1580 
1581 static int qeth_halt_channel(struct qeth_channel *channel)
1582 {
1583         unsigned long flags;
1584         struct qeth_card *card;
1585         int rc;
1586 
1587         card = CARD_FROM_CDEV(channel->ccwdev);
1588         QETH_CARD_TEXT(card, 3, "haltch");
1589         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1590         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1591         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1592 
1593         if (rc)
1594                 return rc;
1595         rc = wait_event_interruptible_timeout(card->wait_q,
1596                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1597         if (rc == -ERESTARTSYS)
1598                 return rc;
1599         if (channel->state != CH_STATE_HALTED)
1600                 return -ETIME;
1601         return 0;
1602 }
1603 
1604 static int qeth_halt_channels(struct qeth_card *card)
1605 {
1606         int rc1 = 0, rc2 = 0, rc3 = 0;
1607 
1608         QETH_CARD_TEXT(card, 3, "haltchs");
1609         rc1 = qeth_halt_channel(&card->read);
1610         rc2 = qeth_halt_channel(&card->write);
1611         rc3 = qeth_halt_channel(&card->data);
1612         if (rc1)
1613                 return rc1;
1614         if (rc2)
1615                 return rc2;
1616         return rc3;
1617 }
1618 
1619 static int qeth_clear_channels(struct qeth_card *card)
1620 {
1621         int rc1 = 0, rc2 = 0, rc3 = 0;
1622 
1623         QETH_CARD_TEXT(card, 3, "clearchs");
1624         rc1 = qeth_clear_channel(&card->read);
1625         rc2 = qeth_clear_channel(&card->write);
1626         rc3 = qeth_clear_channel(&card->data);
1627         if (rc1)
1628                 return rc1;
1629         if (rc2)
1630                 return rc2;
1631         return rc3;
1632 }
1633 
1634 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1635 {
1636         int rc = 0;
1637 
1638         QETH_CARD_TEXT(card, 3, "clhacrd");
1639 
1640         if (halt)
1641                 rc = qeth_halt_channels(card);
1642         if (rc)
1643                 return rc;
1644         return qeth_clear_channels(card);
1645 }
1646 
1647 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1648 {
1649         int rc = 0;
1650 
1651         QETH_CARD_TEXT(card, 3, "qdioclr");
1652         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1653                 QETH_QDIO_CLEANING)) {
1654         case QETH_QDIO_ESTABLISHED:
1655                 if (card->info.type == QETH_CARD_TYPE_IQD)
1656                         rc = qdio_shutdown(CARD_DDEV(card),
1657                                 QDIO_FLAG_CLEANUP_USING_HALT);
1658                 else
1659                         rc = qdio_shutdown(CARD_DDEV(card),
1660                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1661                 if (rc)
1662                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1663                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1664                 break;
1665         case QETH_QDIO_CLEANING:
1666                 return rc;
1667         default:
1668                 break;
1669         }
1670         rc = qeth_clear_halt_card(card, use_halt);
1671         if (rc)
1672                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1673         card->state = CARD_STATE_DOWN;
1674         return rc;
1675 }
1676 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1677 
1678 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1679                                int *length)
1680 {
1681         struct ciw *ciw;
1682         char *rcd_buf;
1683         int ret;
1684         struct qeth_channel *channel = &card->data;
1685         unsigned long flags;
1686 
1687         /*
1688          * scan for RCD command in extended SenseID data
1689          */
1690         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1691         if (!ciw || ciw->cmd == 0)
1692                 return -EOPNOTSUPP;
1693         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1694         if (!rcd_buf)
1695                 return -ENOMEM;
1696 
1697         channel->ccw.cmd_code = ciw->cmd;
1698         channel->ccw.cda = (__u32) __pa(rcd_buf);
1699         channel->ccw.count = ciw->count;
1700         channel->ccw.flags = CCW_FLAG_SLI;
1701         channel->state = CH_STATE_RCD;
1702         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1703         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1704                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1705                                        QETH_RCD_TIMEOUT);
1706         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1707         if (!ret)
1708                 wait_event(card->wait_q,
1709                            (channel->state == CH_STATE_RCD_DONE ||
1710                             channel->state == CH_STATE_DOWN));
1711         if (channel->state == CH_STATE_DOWN)
1712                 ret = -EIO;
1713         else
1714                 channel->state = CH_STATE_DOWN;
1715         if (ret) {
1716                 kfree(rcd_buf);
1717                 *buffer = NULL;
1718                 *length = 0;
1719         } else {
1720                 *length = ciw->count;
1721                 *buffer = rcd_buf;
1722         }
1723         return ret;
1724 }
1725 
1726 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1727 {
1728         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1729         card->info.chpid = prcd[30];
1730         card->info.unit_addr2 = prcd[31];
1731         card->info.cula = prcd[63];
1732         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1733                                (prcd[0x11] == _ascebc['M']));
1734 }
1735 
1736 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1737 {
1738         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1739 
1740         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1741             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1742                 card->info.blkt.time_total = 0;
1743                 card->info.blkt.inter_packet = 0;
1744                 card->info.blkt.inter_packet_jumbo = 0;
1745         } else {
1746                 card->info.blkt.time_total = 250;
1747                 card->info.blkt.inter_packet = 5;
1748                 card->info.blkt.inter_packet_jumbo = 15;
1749         }
1750 }
1751 
1752 static void qeth_init_tokens(struct qeth_card *card)
1753 {
1754         card->token.issuer_rm_w = 0x00010103UL;
1755         card->token.cm_filter_w = 0x00010108UL;
1756         card->token.cm_connection_w = 0x0001010aUL;
1757         card->token.ulp_filter_w = 0x0001010bUL;
1758         card->token.ulp_connection_w = 0x0001010dUL;
1759 }
1760 
1761 static void qeth_init_func_level(struct qeth_card *card)
1762 {
1763         switch (card->info.type) {
1764         case QETH_CARD_TYPE_IQD:
1765                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1766                 break;
1767         case QETH_CARD_TYPE_OSD:
1768         case QETH_CARD_TYPE_OSN:
1769                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1770                 break;
1771         default:
1772                 break;
1773         }
1774 }
1775 
1776 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1777                 void (*idx_reply_cb)(struct qeth_channel *,
1778                         struct qeth_cmd_buffer *))
1779 {
1780         struct qeth_cmd_buffer *iob;
1781         unsigned long flags;
1782         int rc;
1783         struct qeth_card *card;
1784 
1785         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1786         card = CARD_FROM_CDEV(channel->ccwdev);
1787         iob = qeth_get_buffer(channel);
1788         iob->callback = idx_reply_cb;
1789         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1790         channel->ccw.count = QETH_BUFSIZE;
1791         channel->ccw.cda = (__u32) __pa(iob->data);
1792 
1793         wait_event(card->wait_q,
1794                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1795         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1796         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1797         rc = ccw_device_start(channel->ccwdev,
1798                               &channel->ccw, (addr_t) iob, 0, 0);
1799         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1800 
1801         if (rc) {
1802                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1803                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1804                 atomic_set(&channel->irq_pending, 0);
1805                 wake_up(&card->wait_q);
1806                 return rc;
1807         }
1808         rc = wait_event_interruptible_timeout(card->wait_q,
1809                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1810         if (rc == -ERESTARTSYS)
1811                 return rc;
1812         if (channel->state != CH_STATE_UP) {
1813                 rc = -ETIME;
1814                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1815                 qeth_clear_cmd_buffers(channel);
1816         } else
1817                 rc = 0;
1818         return rc;
1819 }
1820 
1821 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1822                 void (*idx_reply_cb)(struct qeth_channel *,
1823                         struct qeth_cmd_buffer *))
1824 {
1825         struct qeth_card *card;
1826         struct qeth_cmd_buffer *iob;
1827         unsigned long flags;
1828         __u16 temp;
1829         __u8 tmp;
1830         int rc;
1831         struct ccw_dev_id temp_devid;
1832 
1833         card = CARD_FROM_CDEV(channel->ccwdev);
1834 
1835         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1836 
1837         iob = qeth_get_buffer(channel);
1838         iob->callback = idx_reply_cb;
1839         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1840         channel->ccw.count = IDX_ACTIVATE_SIZE;
1841         channel->ccw.cda = (__u32) __pa(iob->data);
1842         if (channel == &card->write) {
1843                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1844                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1845                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1846                 card->seqno.trans_hdr++;
1847         } else {
1848                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1849                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1850                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1851         }
1852         tmp = ((__u8)card->info.portno) | 0x80;
1853         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1854         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1855                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1856         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1857                &card->info.func_level, sizeof(__u16));
1858         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1859         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1860         temp = (card->info.cula << 8) + card->info.unit_addr2;
1861         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1862 
1863         wait_event(card->wait_q,
1864                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1865         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1866         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1867         rc = ccw_device_start(channel->ccwdev,
1868                               &channel->ccw, (addr_t) iob, 0, 0);
1869         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1870 
1871         if (rc) {
1872                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1873                         rc);
1874                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1875                 atomic_set(&channel->irq_pending, 0);
1876                 wake_up(&card->wait_q);
1877                 return rc;
1878         }
1879         rc = wait_event_interruptible_timeout(card->wait_q,
1880                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1881         if (rc == -ERESTARTSYS)
1882                 return rc;
1883         if (channel->state != CH_STATE_ACTIVATING) {
1884                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1885                         " failed to recover an error on the device\n");
1886                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1887                         dev_name(&channel->ccwdev->dev));
1888                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1889                 qeth_clear_cmd_buffers(channel);
1890                 return -ETIME;
1891         }
1892         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1893 }
1894 
1895 static int qeth_peer_func_level(int level)
1896 {
1897         if ((level & 0xff) == 8)
1898                 return (level & 0xff) + 0x400;
1899         if (((level >> 8) & 3) == 1)
1900                 return (level & 0xff) + 0x200;
1901         return level;
1902 }
1903 
1904 static void qeth_idx_write_cb(struct qeth_channel *channel,
1905                 struct qeth_cmd_buffer *iob)
1906 {
1907         struct qeth_card *card;
1908         __u16 temp;
1909 
1910         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1911 
1912         if (channel->state == CH_STATE_DOWN) {
1913                 channel->state = CH_STATE_ACTIVATING;
1914                 goto out;
1915         }
1916         card = CARD_FROM_CDEV(channel->ccwdev);
1917 
1918         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1919                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1920                         dev_err(&card->write.ccwdev->dev,
1921                                 "The adapter is used exclusively by another "
1922                                 "host\n");
1923                 else
1924                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1925                                 " negative reply\n",
1926                                 dev_name(&card->write.ccwdev->dev));
1927                 goto out;
1928         }
1929         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1930         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1931                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1932                         "function level mismatch (sent: 0x%x, received: "
1933                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1934                         card->info.func_level, temp);
1935                 goto out;
1936         }
1937         channel->state = CH_STATE_UP;
1938 out:
1939         qeth_release_buffer(channel, iob);
1940 }
1941 
1942 static void qeth_idx_read_cb(struct qeth_channel *channel,
1943                 struct qeth_cmd_buffer *iob)
1944 {
1945         struct qeth_card *card;
1946         __u16 temp;
1947 
1948         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1949         if (channel->state == CH_STATE_DOWN) {
1950                 channel->state = CH_STATE_ACTIVATING;
1951                 goto out;
1952         }
1953 
1954         card = CARD_FROM_CDEV(channel->ccwdev);
1955         if (qeth_check_idx_response(card, iob->data))
1956                         goto out;
1957 
1958         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1959                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1960                 case QETH_IDX_ACT_ERR_EXCL:
1961                         dev_err(&card->write.ccwdev->dev,
1962                                 "The adapter is used exclusively by another "
1963                                 "host\n");
1964                         break;
1965                 case QETH_IDX_ACT_ERR_AUTH:
1966                 case QETH_IDX_ACT_ERR_AUTH_USER:
1967                         dev_err(&card->read.ccwdev->dev,
1968                                 "Setting the device online failed because of "
1969                                 "insufficient authorization\n");
1970                         break;
1971                 default:
1972                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1973                                 " negative reply\n",
1974                                 dev_name(&card->read.ccwdev->dev));
1975                 }
1976                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1977                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1978                 goto out;
1979         }
1980 
1981 /**
1982  *  * temporary fix for microcode bug
1983  *   * to revert it,replace OR by AND
1984  *    */
1985         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1986              (card->info.type == QETH_CARD_TYPE_OSD))
1987                 card->info.portname_required = 1;
1988 
1989         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1990         if (temp != qeth_peer_func_level(card->info.func_level)) {
1991                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1992                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1993                         dev_name(&card->read.ccwdev->dev),
1994                         card->info.func_level, temp);
1995                 goto out;
1996         }
1997         memcpy(&card->token.issuer_rm_r,
1998                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1999                QETH_MPC_TOKEN_LENGTH);
2000         memcpy(&card->info.mcl_level[0],
2001                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2002         channel->state = CH_STATE_UP;
2003 out:
2004         qeth_release_buffer(channel, iob);
2005 }
2006 
2007 void qeth_prepare_control_data(struct qeth_card *card, int len,
2008                 struct qeth_cmd_buffer *iob)
2009 {
2010         qeth_setup_ccw(&card->write, iob->data, len);
2011         iob->callback = qeth_release_buffer;
2012 
2013         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2014                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2015         card->seqno.trans_hdr++;
2016         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2017                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2018         card->seqno.pdu_hdr++;
2019         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2020                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2021         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2022 }
2023 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2024 
2025 int qeth_send_control_data(struct qeth_card *card, int len,
2026                 struct qeth_cmd_buffer *iob,
2027                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2028                         unsigned long),
2029                 void *reply_param)
2030 {
2031         int rc;
2032         unsigned long flags;
2033         struct qeth_reply *reply = NULL;
2034         unsigned long timeout, event_timeout;
2035         struct qeth_ipa_cmd *cmd;
2036 
2037         QETH_CARD_TEXT(card, 2, "sendctl");
2038 
2039         if (card->read_or_write_problem) {
2040                 qeth_release_buffer(iob->channel, iob);
2041                 return -EIO;
2042         }
2043         reply = qeth_alloc_reply(card);
2044         if (!reply) {
2045                 return -ENOMEM;
2046         }
2047         reply->callback = reply_cb;
2048         reply->param = reply_param;
2049         if (card->state == CARD_STATE_DOWN)
2050                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2051         else
2052                 reply->seqno = card->seqno.ipa++;
2053         init_waitqueue_head(&reply->wait_q);
2054         spin_lock_irqsave(&card->lock, flags);
2055         list_add_tail(&reply->list, &card->cmd_waiter_list);
2056         spin_unlock_irqrestore(&card->lock, flags);
2057         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2058 
2059         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2060         qeth_prepare_control_data(card, len, iob);
2061 
2062         if (IS_IPA(iob->data))
2063                 event_timeout = QETH_IPA_TIMEOUT;
2064         else
2065                 event_timeout = QETH_TIMEOUT;
2066         timeout = jiffies + event_timeout;
2067 
2068         QETH_CARD_TEXT(card, 6, "noirqpnd");
2069         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2070         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2071                               (addr_t) iob, 0, 0);
2072         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2073         if (rc) {
2074                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2075                         "ccw_device_start rc = %i\n",
2076                         dev_name(&card->write.ccwdev->dev), rc);
2077                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2078                 spin_lock_irqsave(&card->lock, flags);
2079                 list_del_init(&reply->list);
2080                 qeth_put_reply(reply);
2081                 spin_unlock_irqrestore(&card->lock, flags);
2082                 qeth_release_buffer(iob->channel, iob);
2083                 atomic_set(&card->write.irq_pending, 0);
2084                 wake_up(&card->wait_q);
2085                 return rc;
2086         }
2087 
2088         /* we have only one long running ipassist, since we can ensure
2089            process context of this command we can sleep */
2090         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2091         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2092             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2093                 if (!wait_event_timeout(reply->wait_q,
2094                     atomic_read(&reply->received), event_timeout))
2095                         goto time_err;
2096         } else {
2097                 while (!atomic_read(&reply->received)) {
2098                         if (time_after(jiffies, timeout))
2099                                 goto time_err;
2100                         cpu_relax();
2101                 }
2102         }
2103 
2104         if (reply->rc == -EIO)
2105                 goto error;
2106         rc = reply->rc;
2107         qeth_put_reply(reply);
2108         return rc;
2109 
2110 time_err:
2111         reply->rc = -ETIME;
2112         spin_lock_irqsave(&reply->card->lock, flags);
2113         list_del_init(&reply->list);
2114         spin_unlock_irqrestore(&reply->card->lock, flags);
2115         atomic_inc(&reply->received);
2116 error:
2117         atomic_set(&card->write.irq_pending, 0);
2118         qeth_release_buffer(iob->channel, iob);
2119         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2120         rc = reply->rc;
2121         qeth_put_reply(reply);
2122         return rc;
2123 }
2124 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2125 
2126 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2127                 unsigned long data)
2128 {
2129         struct qeth_cmd_buffer *iob;
2130 
2131         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2132 
2133         iob = (struct qeth_cmd_buffer *) data;
2134         memcpy(&card->token.cm_filter_r,
2135                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2136                QETH_MPC_TOKEN_LENGTH);
2137         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2138         return 0;
2139 }
2140 
2141 static int qeth_cm_enable(struct qeth_card *card)
2142 {
2143         int rc;
2144         struct qeth_cmd_buffer *iob;
2145 
2146         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2147 
2148         iob = qeth_wait_for_buffer(&card->write);
2149         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2150         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2151                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2152         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2153                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2154 
2155         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2156                                     qeth_cm_enable_cb, NULL);
2157         return rc;
2158 }
2159 
2160 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2161                 unsigned long data)
2162 {
2163 
2164         struct qeth_cmd_buffer *iob;
2165 
2166         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2167 
2168         iob = (struct qeth_cmd_buffer *) data;
2169         memcpy(&card->token.cm_connection_r,
2170                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2171                QETH_MPC_TOKEN_LENGTH);
2172         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2173         return 0;
2174 }
2175 
2176 static int qeth_cm_setup(struct qeth_card *card)
2177 {
2178         int rc;
2179         struct qeth_cmd_buffer *iob;
2180 
2181         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2182 
2183         iob = qeth_wait_for_buffer(&card->write);
2184         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2185         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2186                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2187         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2188                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2189         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2190                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2191         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2192                                     qeth_cm_setup_cb, NULL);
2193         return rc;
2194 
2195 }
2196 
2197 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2198 {
2199         switch (card->info.type) {
2200         case QETH_CARD_TYPE_UNKNOWN:
2201                 return 1500;
2202         case QETH_CARD_TYPE_IQD:
2203                 return card->info.max_mtu;
2204         case QETH_CARD_TYPE_OSD:
2205                 switch (card->info.link_type) {
2206                 case QETH_LINK_TYPE_HSTR:
2207                 case QETH_LINK_TYPE_LANE_TR:
2208                         return 2000;
2209                 default:
2210                         return card->options.layer2 ? 1500 : 1492;
2211                 }
2212         case QETH_CARD_TYPE_OSM:
2213         case QETH_CARD_TYPE_OSX:
2214                 return card->options.layer2 ? 1500 : 1492;
2215         default:
2216                 return 1500;
2217         }
2218 }
2219 
2220 static inline int qeth_get_mtu_outof_framesize(int framesize)
2221 {
2222         switch (framesize) {
2223         case 0x4000:
2224                 return 8192;
2225         case 0x6000:
2226                 return 16384;
2227         case 0xa000:
2228                 return 32768;
2229         case 0xffff:
2230                 return 57344;
2231         default:
2232                 return 0;
2233         }
2234 }
2235 
2236 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2237 {
2238         switch (card->info.type) {
2239         case QETH_CARD_TYPE_OSD:
2240         case QETH_CARD_TYPE_OSM:
2241         case QETH_CARD_TYPE_OSX:
2242         case QETH_CARD_TYPE_IQD:
2243                 return ((mtu >= 576) &&
2244                         (mtu <= card->info.max_mtu));
2245         case QETH_CARD_TYPE_OSN:
2246         case QETH_CARD_TYPE_UNKNOWN:
2247         default:
2248                 return 1;
2249         }
2250 }
2251 
2252 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2253                 unsigned long data)
2254 {
2255 
2256         __u16 mtu, framesize;
2257         __u16 len;
2258         __u8 link_type;
2259         struct qeth_cmd_buffer *iob;
2260 
2261         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2262 
2263         iob = (struct qeth_cmd_buffer *) data;
2264         memcpy(&card->token.ulp_filter_r,
2265                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2266                QETH_MPC_TOKEN_LENGTH);
2267         if (card->info.type == QETH_CARD_TYPE_IQD) {
2268                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2269                 mtu = qeth_get_mtu_outof_framesize(framesize);
2270                 if (!mtu) {
2271                         iob->rc = -EINVAL;
2272                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2273                         return 0;
2274                 }
2275                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2276                         /* frame size has changed */
2277                         if (card->dev &&
2278                             ((card->dev->mtu == card->info.initial_mtu) ||
2279                              (card->dev->mtu > mtu)))
2280                                 card->dev->mtu = mtu;
2281                         qeth_free_qdio_buffers(card);
2282                 }
2283                 card->info.initial_mtu = mtu;
2284                 card->info.max_mtu = mtu;
2285                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2286         } else {
2287                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2288                         iob->data);
2289                 card->info.initial_mtu = min(card->info.max_mtu,
2290                                         qeth_get_initial_mtu_for_card(card));
2291                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2292         }
2293 
2294         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2295         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2296                 memcpy(&link_type,
2297                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2298                 card->info.link_type = link_type;
2299         } else
2300                 card->info.link_type = 0;
2301         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2302         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2303         return 0;
2304 }
2305 
2306 static int qeth_ulp_enable(struct qeth_card *card)
2307 {
2308         int rc;
2309         char prot_type;
2310         struct qeth_cmd_buffer *iob;
2311 
2312         /*FIXME: trace view callbacks*/
2313         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2314 
2315         iob = qeth_wait_for_buffer(&card->write);
2316         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2317 
2318         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2319                 (__u8) card->info.portno;
2320         if (card->options.layer2)
2321                 if (card->info.type == QETH_CARD_TYPE_OSN)
2322                         prot_type = QETH_PROT_OSN2;
2323                 else
2324                         prot_type = QETH_PROT_LAYER2;
2325         else
2326                 prot_type = QETH_PROT_TCPIP;
2327 
2328         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2329         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2330                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2331         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2332                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2333         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2334                card->info.portname, 9);
2335         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2336                                     qeth_ulp_enable_cb, NULL);
2337         return rc;
2338 
2339 }
2340 
2341 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2342                 unsigned long data)
2343 {
2344         struct qeth_cmd_buffer *iob;
2345 
2346         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2347 
2348         iob = (struct qeth_cmd_buffer *) data;
2349         memcpy(&card->token.ulp_connection_r,
2350                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2351                QETH_MPC_TOKEN_LENGTH);
2352         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2353                      3)) {
2354                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2355                 dev_err(&card->gdev->dev, "A connection could not be "
2356                         "established because of an OLM limit\n");
2357                 iob->rc = -EMLINK;
2358         }
2359         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2360         return 0;
2361 }
2362 
2363 static int qeth_ulp_setup(struct qeth_card *card)
2364 {
2365         int rc;
2366         __u16 temp;
2367         struct qeth_cmd_buffer *iob;
2368         struct ccw_dev_id dev_id;
2369 
2370         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2371 
2372         iob = qeth_wait_for_buffer(&card->write);
2373         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2374 
2375         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2376                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2377         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2378                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2379         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2380                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2381 
2382         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2383         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2384         temp = (card->info.cula << 8) + card->info.unit_addr2;
2385         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2386         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2387                                     qeth_ulp_setup_cb, NULL);
2388         return rc;
2389 }
2390 
2391 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2392 {
2393         int rc;
2394         struct qeth_qdio_out_buffer *newbuf;
2395 
2396         rc = 0;
2397         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2398         if (!newbuf) {
2399                 rc = -ENOMEM;
2400                 goto out;
2401         }
2402         newbuf->buffer = &q->qdio_bufs[bidx];
2403         skb_queue_head_init(&newbuf->skb_list);
2404         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2405         newbuf->q = q;
2406         newbuf->aob = NULL;
2407         newbuf->next_pending = q->bufs[bidx];
2408         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2409         q->bufs[bidx] = newbuf;
2410         if (q->bufstates) {
2411                 q->bufstates[bidx].user = newbuf;
2412                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2413                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2414                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2415                                 (long) newbuf->next_pending);
2416         }
2417 out:
2418         return rc;
2419 }
2420 
2421 
2422 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2423 {
2424         int i, j;
2425 
2426         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2427 
2428         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2429                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2430                 return 0;
2431 
2432         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2433                                    GFP_KERNEL);
2434         if (!card->qdio.in_q)
2435                 goto out_nomem;
2436         QETH_DBF_TEXT(SETUP, 2, "inq");
2437         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2438         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2439         /* give inbound qeth_qdio_buffers their qdio_buffers */
2440         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2441                 card->qdio.in_q->bufs[i].buffer =
2442                         &card->qdio.in_q->qdio_bufs[i];
2443                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2444         }
2445         /* inbound buffer pool */
2446         if (qeth_alloc_buffer_pool(card))
2447                 goto out_freeinq;
2448 
2449         /* outbound */
2450         card->qdio.out_qs =
2451                 kzalloc(card->qdio.no_out_queues *
2452                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2453         if (!card->qdio.out_qs)
2454                 goto out_freepool;
2455         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2456                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2457                                                GFP_KERNEL);
2458                 if (!card->qdio.out_qs[i])
2459                         goto out_freeoutq;
2460                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2461                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2462                 card->qdio.out_qs[i]->queue_no = i;
2463                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2464                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2465                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2466                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2467                                 goto out_freeoutqbufs;
2468                 }
2469         }
2470 
2471         /* completion */
2472         if (qeth_alloc_cq(card))
2473                 goto out_freeoutq;
2474 
2475         return 0;
2476 
2477 out_freeoutqbufs:
2478         while (j > 0) {
2479                 --j;
2480                 kmem_cache_free(qeth_qdio_outbuf_cache,
2481                                 card->qdio.out_qs[i]->bufs[j]);
2482                 card->qdio.out_qs[i]->bufs[j] = NULL;
2483         }
2484 out_freeoutq:
2485         while (i > 0) {
2486                 kfree(card->qdio.out_qs[--i]);
2487                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2488         }
2489         kfree(card->qdio.out_qs);
2490         card->qdio.out_qs = NULL;
2491 out_freepool:
2492         qeth_free_buffer_pool(card);
2493 out_freeinq:
2494         kfree(card->qdio.in_q);
2495         card->qdio.in_q = NULL;
2496 out_nomem:
2497         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2498         return -ENOMEM;
2499 }
2500 
2501 static void qeth_create_qib_param_field(struct qeth_card *card,
2502                 char *param_field)
2503 {
2504 
2505         param_field[0] = _ascebc['P'];
2506         param_field[1] = _ascebc['C'];
2507         param_field[2] = _ascebc['I'];
2508         param_field[3] = _ascebc['T'];
2509         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2510         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2511         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2512 }
2513 
2514 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2515                 char *param_field)
2516 {
2517         param_field[16] = _ascebc['B'];
2518         param_field[17] = _ascebc['L'];
2519         param_field[18] = _ascebc['K'];
2520         param_field[19] = _ascebc['T'];
2521         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2522         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2523         *((unsigned int *) (&param_field[28])) =
2524                 card->info.blkt.inter_packet_jumbo;
2525 }
2526 
2527 static int qeth_qdio_activate(struct qeth_card *card)
2528 {
2529         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2530         return qdio_activate(CARD_DDEV(card));
2531 }
2532 
2533 static int qeth_dm_act(struct qeth_card *card)
2534 {
2535         int rc;
2536         struct qeth_cmd_buffer *iob;
2537 
2538         QETH_DBF_TEXT(SETUP, 2, "dmact");
2539 
2540         iob = qeth_wait_for_buffer(&card->write);
2541         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2542 
2543         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2544                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2545         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2546                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2547         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2548         return rc;
2549 }
2550 
2551 static int qeth_mpc_initialize(struct qeth_card *card)
2552 {
2553         int rc;
2554 
2555         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2556 
2557         rc = qeth_issue_next_read(card);
2558         if (rc) {
2559                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2560                 return rc;
2561         }
2562         rc = qeth_cm_enable(card);
2563         if (rc) {
2564                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2565                 goto out_qdio;
2566         }
2567         rc = qeth_cm_setup(card);
2568         if (rc) {
2569                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2570                 goto out_qdio;
2571         }
2572         rc = qeth_ulp_enable(card);
2573         if (rc) {
2574                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2575                 goto out_qdio;
2576         }
2577         rc = qeth_ulp_setup(card);
2578         if (rc) {
2579                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2580                 goto out_qdio;
2581         }
2582         rc = qeth_alloc_qdio_buffers(card);
2583         if (rc) {
2584                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2585                 goto out_qdio;
2586         }
2587         rc = qeth_qdio_establish(card);
2588         if (rc) {
2589                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2590                 qeth_free_qdio_buffers(card);
2591                 goto out_qdio;
2592         }
2593         rc = qeth_qdio_activate(card);
2594         if (rc) {
2595                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2596                 goto out_qdio;
2597         }
2598         rc = qeth_dm_act(card);
2599         if (rc) {
2600                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2601                 goto out_qdio;
2602         }
2603 
2604         return 0;
2605 out_qdio:
2606         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2607         qdio_free(CARD_DDEV(card));
2608         return rc;
2609 }
2610 
2611 static void qeth_print_status_with_portname(struct qeth_card *card)
2612 {
2613         char dbf_text[15];
2614         int i;
2615 
2616         sprintf(dbf_text, "%s", card->info.portname + 1);
2617         for (i = 0; i < 8; i++)
2618                 dbf_text[i] =
2619                         (char) _ebcasc[(__u8) dbf_text[i]];
2620         dbf_text[8] = 0;
2621         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2622                "with link type %s (portname: %s)\n",
2623                qeth_get_cardname(card),
2624                (card->info.mcl_level[0]) ? " (level: " : "",
2625                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2626                (card->info.mcl_level[0]) ? ")" : "",
2627                qeth_get_cardname_short(card),
2628                dbf_text);
2629 
2630 }
2631 
2632 static void qeth_print_status_no_portname(struct qeth_card *card)
2633 {
2634         if (card->info.portname[0])
2635                 dev_info(&card->gdev->dev, "Device is a%s "
2636                        "card%s%s%s\nwith link type %s "
2637                        "(no portname needed by interface).\n",
2638                        qeth_get_cardname(card),
2639                        (card->info.mcl_level[0]) ? " (level: " : "",
2640                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2641                        (card->info.mcl_level[0]) ? ")" : "",
2642                        qeth_get_cardname_short(card));
2643         else
2644                 dev_info(&card->gdev->dev, "Device is a%s "
2645                        "card%s%s%s\nwith link type %s.\n",
2646                        qeth_get_cardname(card),
2647                        (card->info.mcl_level[0]) ? " (level: " : "",
2648                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2649                        (card->info.mcl_level[0]) ? ")" : "",
2650                        qeth_get_cardname_short(card));
2651 }
2652 
2653 void qeth_print_status_message(struct qeth_card *card)
2654 {
2655         switch (card->info.type) {
2656         case QETH_CARD_TYPE_OSD:
2657         case QETH_CARD_TYPE_OSM:
2658         case QETH_CARD_TYPE_OSX:
2659                 /* VM will use a non-zero first character
2660                  * to indicate a HiperSockets like reporting
2661                  * of the level OSA sets the first character to zero
2662                  * */
2663                 if (!card->info.mcl_level[0]) {
2664                         sprintf(card->info.mcl_level, "%02x%02x",
2665                                 card->info.mcl_level[2],
2666                                 card->info.mcl_level[3]);
2667 
2668                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2669                         break;
2670                 }
2671                 /* fallthrough */
2672         case QETH_CARD_TYPE_IQD:
2673                 if ((card->info.guestlan) ||
2674                     (card->info.mcl_level[0] & 0x80)) {
2675                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2676                                 card->info.mcl_level[0]];
2677                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2678                                 card->info.mcl_level[1]];
2679                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2680                                 card->info.mcl_level[2]];
2681                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2682                                 card->info.mcl_level[3]];
2683                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2684                 }
2685                 break;
2686         default:
2687                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2688         }
2689         if (card->info.portname_required)
2690                 qeth_print_status_with_portname(card);
2691         else
2692                 qeth_print_status_no_portname(card);
2693 }
2694 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2695 
2696 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2697 {
2698         struct qeth_buffer_pool_entry *entry;
2699 
2700         QETH_CARD_TEXT(card, 5, "inwrklst");
2701 
2702         list_for_each_entry(entry,
2703                             &card->qdio.init_pool.entry_list, init_list) {
2704                 qeth_put_buffer_pool_entry(card, entry);
2705         }
2706 }
2707 
2708 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2709                 struct qeth_card *card)
2710 {
2711         struct list_head *plh;
2712         struct qeth_buffer_pool_entry *entry;
2713         int i, free;
2714         struct page *page;
2715 
2716         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2717                 return NULL;
2718 
2719         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2720                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2721                 free = 1;
2722                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2723                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2724                                 free = 0;
2725                                 break;
2726                         }
2727                 }
2728                 if (free) {
2729                         list_del_init(&entry->list);
2730                         return entry;
2731                 }
2732         }
2733 
2734         /* no free buffer in pool so take first one and swap pages */
2735         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2736                         struct qeth_buffer_pool_entry, list);
2737         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2738                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2739                         page = alloc_page(GFP_ATOMIC);
2740                         if (!page) {
2741                                 return NULL;
2742                         } else {
2743                                 free_page((unsigned long)entry->elements[i]);
2744                                 entry->elements[i] = page_address(page);
2745                                 if (card->options.performance_stats)
2746                                         card->perf_stats.sg_alloc_page_rx++;
2747                         }
2748                 }
2749         }
2750         list_del_init(&entry->list);
2751         return entry;
2752 }
2753 
2754 static int qeth_init_input_buffer(struct qeth_card *card,
2755                 struct qeth_qdio_buffer *buf)
2756 {
2757         struct qeth_buffer_pool_entry *pool_entry;
2758         int i;
2759 
2760         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2761                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2762                 if (!buf->rx_skb)
2763                         return 1;
2764         }
2765 
2766         pool_entry = qeth_find_free_buffer_pool_entry(card);
2767         if (!pool_entry)
2768                 return 1;
2769 
2770         /*
2771          * since the buffer is accessed only from the input_tasklet
2772          * there shouldn't be a need to synchronize; also, since we use
2773          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2774          * buffers
2775          */
2776 
2777         buf->pool_entry = pool_entry;
2778         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2779                 buf->buffer->element[i].length = PAGE_SIZE;
2780                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2781                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2782                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2783                 else
2784                         buf->buffer->element[i].eflags = 0;
2785                 buf->buffer->element[i].sflags = 0;
2786         }
2787         return 0;
2788 }
2789 
2790 int qeth_init_qdio_queues(struct qeth_card *card)
2791 {
2792         int i, j;
2793         int rc;
2794 
2795         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2796 
2797         /* inbound queue */
2798         memset(card->qdio.in_q->qdio_bufs, 0,
2799                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2800         qeth_initialize_working_pool_list(card);
2801         /*give only as many buffers to hardware as we have buffer pool entries*/
2802         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2803                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2804         card->qdio.in_q->next_buf_to_init =
2805                 card->qdio.in_buf_pool.buf_count - 1;
2806         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2807                      card->qdio.in_buf_pool.buf_count - 1);
2808         if (rc) {
2809                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2810                 return rc;
2811         }
2812 
2813         /* completion */
2814         rc = qeth_cq_init(card);
2815         if (rc) {
2816                 return rc;
2817         }
2818 
2819         /* outbound queue */
2820         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2821                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2822                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2823                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2824                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2825                                         card->qdio.out_qs[i]->bufs[j],
2826                                         QETH_QDIO_BUF_EMPTY);
2827                 }
2828                 card->qdio.out_qs[i]->card = card;
2829                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2830                 card->qdio.out_qs[i]->do_pack = 0;
2831                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2832                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2833                 atomic_set(&card->qdio.out_qs[i]->state,
2834                            QETH_OUT_Q_UNLOCKED);
2835         }
2836         return 0;
2837 }
2838 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2839 
2840 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2841 {
2842         switch (link_type) {
2843         case QETH_LINK_TYPE_HSTR:
2844                 return 2;
2845         default:
2846                 return 1;
2847         }
2848 }
2849 
2850 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2851                 struct qeth_ipa_cmd *cmd, __u8 command,
2852                 enum qeth_prot_versions prot)
2853 {
2854         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2855         cmd->hdr.command = command;
2856         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2857         cmd->hdr.seqno = card->seqno.ipa;
2858         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2859         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2860         if (card->options.layer2)
2861                 cmd->hdr.prim_version_no = 2;
2862         else
2863                 cmd->hdr.prim_version_no = 1;
2864         cmd->hdr.param_count = 1;
2865         cmd->hdr.prot_version = prot;
2866         cmd->hdr.ipa_supported = 0;
2867         cmd->hdr.ipa_enabled = 0;
2868 }
2869 
2870 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2871                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2872 {
2873         struct qeth_cmd_buffer *iob;
2874         struct qeth_ipa_cmd *cmd;
2875 
2876         iob = qeth_wait_for_buffer(&card->write);
2877         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2878         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2879 
2880         return iob;
2881 }
2882 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2883 
2884 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2885                 char prot_type)
2886 {
2887         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2888         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2889         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2890                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2891 }
2892 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2893 
2894 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2895                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2896                         unsigned long),
2897                 void *reply_param)
2898 {
2899         int rc;
2900         char prot_type;
2901 
2902         QETH_CARD_TEXT(card, 4, "sendipa");
2903 
2904         if (card->options.layer2)
2905                 if (card->info.type == QETH_CARD_TYPE_OSN)
2906                         prot_type = QETH_PROT_OSN2;
2907                 else
2908                         prot_type = QETH_PROT_LAYER2;
2909         else
2910                 prot_type = QETH_PROT_TCPIP;
2911         qeth_prepare_ipa_cmd(card, iob, prot_type);
2912         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2913                                                 iob, reply_cb, reply_param);
2914         if (rc == -ETIME) {
2915                 qeth_clear_ipacmd_list(card);
2916                 qeth_schedule_recovery(card);
2917         }
2918         return rc;
2919 }
2920 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2921 
2922 int qeth_send_startlan(struct qeth_card *card)
2923 {
2924         int rc;
2925         struct qeth_cmd_buffer *iob;
2926 
2927         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2928 
2929         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2930         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2931         return rc;
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2934 
2935 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2936                 struct qeth_reply *reply, unsigned long data)
2937 {
2938         struct qeth_ipa_cmd *cmd;
2939 
2940         QETH_CARD_TEXT(card, 4, "defadpcb");
2941 
2942         cmd = (struct qeth_ipa_cmd *) data;
2943         if (cmd->hdr.return_code == 0)
2944                 cmd->hdr.return_code =
2945                         cmd->data.setadapterparms.hdr.return_code;
2946         return 0;
2947 }
2948 
2949 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2950                 struct qeth_reply *reply, unsigned long data)
2951 {
2952         struct qeth_ipa_cmd *cmd;
2953 
2954         QETH_CARD_TEXT(card, 3, "quyadpcb");
2955 
2956         cmd = (struct qeth_ipa_cmd *) data;
2957         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2958                 card->info.link_type =
2959                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2960                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2961         }
2962         card->options.adp.supported_funcs =
2963                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2964         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2965 }
2966 
2967 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2968                 __u32 command, __u32 cmdlen)
2969 {
2970         struct qeth_cmd_buffer *iob;
2971         struct qeth_ipa_cmd *cmd;
2972 
2973         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2974                                      QETH_PROT_IPV4);
2975         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2976         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2977         cmd->data.setadapterparms.hdr.command_code = command;
2978         cmd->data.setadapterparms.hdr.used_total = 1;
2979         cmd->data.setadapterparms.hdr.seq_no = 1;
2980 
2981         return iob;
2982 }
2983 
2984 int qeth_query_setadapterparms(struct qeth_card *card)
2985 {
2986         int rc;
2987         struct qeth_cmd_buffer *iob;
2988 
2989         QETH_CARD_TEXT(card, 3, "queryadp");
2990         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2991                                    sizeof(struct qeth_ipacmd_setadpparms));
2992         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2993         return rc;
2994 }
2995 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2996 
2997 static int qeth_query_ipassists_cb(struct qeth_card *card,
2998                 struct qeth_reply *reply, unsigned long data)
2999 {
3000         struct qeth_ipa_cmd *cmd;
3001 
3002         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3003 
3004         cmd = (struct qeth_ipa_cmd *) data;
3005 
3006         switch (cmd->hdr.return_code) {
3007         case IPA_RC_NOTSUPP:
3008         case IPA_RC_L2_UNSUPPORTED_CMD:
3009                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3010                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3011                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3012                 return -0;
3013         default:
3014                 if (cmd->hdr.return_code) {
3015                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3016                                                 "rc=%d\n",
3017                                                 dev_name(&card->gdev->dev),
3018                                                 cmd->hdr.return_code);
3019                         return 0;
3020                 }
3021         }
3022 
3023         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3024                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3025                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3026         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3027                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3028                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3029         } else
3030                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3031                                         "\n", dev_name(&card->gdev->dev));
3032         return 0;
3033 }
3034 
3035 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3036 {
3037         int rc;
3038         struct qeth_cmd_buffer *iob;
3039 
3040         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3041         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3042         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3043         return rc;
3044 }
3045 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3046 
3047 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3048                 struct qeth_reply *reply, unsigned long data)
3049 {
3050         struct qeth_ipa_cmd *cmd;
3051         __u16 rc;
3052 
3053         cmd = (struct qeth_ipa_cmd *)data;
3054         rc = cmd->hdr.return_code;
3055         if (rc)
3056                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3057         else
3058                 card->info.diagass_support = cmd->data.diagass.ext;
3059         return 0;
3060 }
3061 
3062 static int qeth_query_setdiagass(struct qeth_card *card)
3063 {
3064         struct qeth_cmd_buffer *iob;
3065         struct qeth_ipa_cmd    *cmd;
3066 
3067         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3068         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3069         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3070         cmd->data.diagass.subcmd_len = 16;
3071         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3072         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3073 }
3074 
3075 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3076 {
3077         unsigned long info = get_zeroed_page(GFP_KERNEL);
3078         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3079         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3080         struct ccw_dev_id ccwid;
3081         int level;
3082 
3083         tid->chpid = card->info.chpid;
3084         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3085         tid->ssid = ccwid.ssid;
3086         tid->devno = ccwid.devno;
3087         if (!info)
3088                 return;
3089         level = stsi(NULL, 0, 0, 0);
3090         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3091                 tid->lparnr = info222->lpar_number;
3092         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3093                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3094                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3095         }
3096         free_page(info);
3097         return;
3098 }
3099 
3100 static int qeth_hw_trap_cb(struct qeth_card *card,
3101                 struct qeth_reply *reply, unsigned long data)
3102 {
3103         struct qeth_ipa_cmd *cmd;
3104         __u16 rc;
3105 
3106         cmd = (struct qeth_ipa_cmd *)data;
3107         rc = cmd->hdr.return_code;
3108         if (rc)
3109                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3110         return 0;
3111 }
3112 
3113 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3114 {
3115         struct qeth_cmd_buffer *iob;
3116         struct qeth_ipa_cmd *cmd;
3117 
3118         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3119         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3120         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3121         cmd->data.diagass.subcmd_len = 80;
3122         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3123         cmd->data.diagass.type = 1;
3124         cmd->data.diagass.action = action;
3125         switch (action) {
3126         case QETH_DIAGS_TRAP_ARM:
3127                 cmd->data.diagass.options = 0x0003;
3128                 cmd->data.diagass.ext = 0x00010000 +
3129                         sizeof(struct qeth_trap_id);
3130                 qeth_get_trap_id(card,
3131                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3132                 break;
3133         case QETH_DIAGS_TRAP_DISARM:
3134                 cmd->data.diagass.options = 0x0001;
3135                 break;
3136         case QETH_DIAGS_TRAP_CAPTURE:
3137                 break;
3138         }
3139         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3140 }
3141 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3142 
3143 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3144                 unsigned int qdio_error, const char *dbftext)
3145 {
3146         if (qdio_error) {
3147                 QETH_CARD_TEXT(card, 2, dbftext);
3148                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3149                                buf->element[15].sflags);
3150                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3151                                buf->element[14].sflags);
3152                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3153                 if ((buf->element[15].sflags) == 0x12) {
3154                         card->stats.rx_dropped++;
3155                         return 0;
3156                 } else
3157                         return 1;
3158         }
3159         return 0;
3160 }
3161 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3162 
3163 void qeth_buffer_reclaim_work(struct work_struct *work)
3164 {
3165         struct qeth_card *card = container_of(work, struct qeth_card,
3166                 buffer_reclaim_work.work);
3167 
3168         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3169         qeth_queue_input_buffer(card, card->reclaim_index);
3170 }
3171 
3172 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3173 {
3174         struct qeth_qdio_q *queue = card->qdio.in_q;
3175         struct list_head *lh;
3176         int count;
3177         int i;
3178         int rc;
3179         int newcount = 0;
3180 
3181         count = (index < queue->next_buf_to_init)?
3182                 card->qdio.in_buf_pool.buf_count -
3183                 (queue->next_buf_to_init - index) :
3184                 card->qdio.in_buf_pool.buf_count -
3185                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3186         /* only requeue at a certain threshold to avoid SIGAs */
3187         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3188                 for (i = queue->next_buf_to_init;
3189                      i < queue->next_buf_to_init + count; ++i) {
3190                         if (qeth_init_input_buffer(card,
3191                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3192                                 break;
3193                         } else {
3194                                 newcount++;
3195                         }
3196                 }
3197 
3198                 if (newcount < count) {
3199                         /* we are in memory shortage so we switch back to
3200                            traditional skb allocation and drop packages */
3201                         atomic_set(&card->force_alloc_skb, 3);
3202                         count = newcount;
3203                 } else {
3204                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3205                 }
3206 
3207                 if (!count) {
3208                         i = 0;
3209                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3210                                 i++;
3211                         if (i == card->qdio.in_buf_pool.buf_count) {
3212                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3213                                 card->reclaim_index = index;
3214                                 schedule_delayed_work(
3215                                         &card->buffer_reclaim_work,
3216                                         QETH_RECLAIM_WORK_TIME);
3217                         }
3218                         return;
3219                 }
3220 
3221                 /*
3222                  * according to old code it should be avoided to requeue all
3223                  * 128 buffers in order to benefit from PCI avoidance.
3224                  * this function keeps at least one buffer (the buffer at
3225                  * 'index') un-requeued -> this buffer is the first buffer that
3226                  * will be requeued the next time
3227                  */
3228                 if (card->options.performance_stats) {
3229                         card->perf_stats.inbound_do_qdio_cnt++;
3230                         card->perf_stats.inbound_do_qdio_start_time =
3231                                 qeth_get_micros();
3232                 }
3233                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3234                              queue->next_buf_to_init, count);
3235                 if (card->options.performance_stats)
3236                         card->perf_stats.inbound_do_qdio_time +=
3237                                 qeth_get_micros() -
3238                                 card->perf_stats.inbound_do_qdio_start_time;
3239                 if (rc) {
3240                         QETH_CARD_TEXT(card, 2, "qinberr");
3241                 }
3242                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3243                                           QDIO_MAX_BUFFERS_PER_Q;
3244         }
3245 }
3246 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3247 
3248 static int qeth_handle_send_error(struct qeth_card *card,
3249                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3250 {
3251         int sbalf15 = buffer->buffer->element[15].sflags;
3252 
3253         QETH_CARD_TEXT(card, 6, "hdsnderr");
3254         if (card->info.type == QETH_CARD_TYPE_IQD) {
3255                 if (sbalf15 == 0) {
3256                         qdio_err = 0;
3257                 } else {
3258                         qdio_err = 1;
3259                 }
3260         }
3261         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3262 
3263         if (!qdio_err)
3264                 return QETH_SEND_ERROR_NONE;
3265 
3266         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3267                 return QETH_SEND_ERROR_RETRY;
3268 
3269         QETH_CARD_TEXT(card, 1, "lnkfail");
3270         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3271                        (u16)qdio_err, (u8)sbalf15);
3272         return QETH_SEND_ERROR_LINK_FAILURE;
3273 }
3274 
3275 /*
3276  * Switched to packing state if the number of used buffers on a queue
3277  * reaches a certain limit.
3278  */
3279 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3280 {
3281         if (!queue->do_pack) {
3282                 if (atomic_read(&queue->used_buffers)
3283                     >= QETH_HIGH_WATERMARK_PACK){
3284                         /* switch non-PACKING -> PACKING */
3285                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3286                         if (queue->card->options.performance_stats)
3287                                 queue->card->perf_stats.sc_dp_p++;
3288                         queue->do_pack = 1;
3289                 }
3290         }
3291 }
3292 
3293 /*
3294  * Switches from packing to non-packing mode. If there is a packing
3295  * buffer on the queue this buffer will be prepared to be flushed.
3296  * In that case 1 is returned to inform the caller. If no buffer
3297  * has to be flushed, zero is returned.
3298  */
3299 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3300 {
3301         struct qeth_qdio_out_buffer *buffer;
3302         int flush_count = 0;
3303 
3304         if (queue->do_pack) {
3305                 if (atomic_read(&queue->used_buffers)
3306                     <= QETH_LOW_WATERMARK_PACK) {
3307                         /* switch PACKING -> non-PACKING */
3308                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3309                         if (queue->card->options.performance_stats)
3310                                 queue->card->perf_stats.sc_p_dp++;
3311                         queue->do_pack = 0;
3312                         /* flush packing buffers */
3313                         buffer = queue->bufs[queue->next_buf_to_fill];
3314                         if ((atomic_read(&buffer->state) ==
3315                                                 QETH_QDIO_BUF_EMPTY) &&
3316                             (buffer->next_element_to_fill > 0)) {
3317                                 atomic_set(&buffer->state,
3318                                            QETH_QDIO_BUF_PRIMED);
3319                                 flush_count++;
3320                                 queue->next_buf_to_fill =
3321                                         (queue->next_buf_to_fill + 1) %
3322                                         QDIO_MAX_BUFFERS_PER_Q;
3323                         }
3324                 }
3325         }
3326         return flush_count;
3327 }
3328 
3329 
3330 /*
3331  * Called to flush a packing buffer if no more pci flags are on the queue.
3332  * Checks if there is a packing buffer and prepares it to be flushed.
3333  * In that case returns 1, otherwise zero.
3334  */
3335 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3336 {
3337         struct qeth_qdio_out_buffer *buffer;
3338 
3339         buffer = queue->bufs[queue->next_buf_to_fill];
3340         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3341            (buffer->next_element_to_fill > 0)) {
3342                 /* it's a packing buffer */
3343                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3344                 queue->next_buf_to_fill =
3345                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3346                 return 1;
3347         }
3348         return 0;
3349 }
3350 
3351 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3352                                int count)
3353 {
3354         struct qeth_qdio_out_buffer *buf;
3355         int rc;
3356         int i;
3357         unsigned int qdio_flags;
3358 
3359         for (i = index; i < index + count; ++i) {
3360                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3361                 buf = queue->bufs[bidx];
3362                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3363                                 SBAL_EFLAGS_LAST_ENTRY;
3364 
3365                 if (queue->bufstates)
3366                         queue->bufstates[bidx].user = buf;
3367 
3368                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3369                         continue;
3370 
3371                 if (!queue->do_pack) {
3372                         if ((atomic_read(&queue->used_buffers) >=
3373                                 (QETH_HIGH_WATERMARK_PACK -
3374                                  QETH_WATERMARK_PACK_FUZZ)) &&
3375                             !atomic_read(&queue->set_pci_flags_count)) {
3376                                 /* it's likely that we'll go to packing
3377                                  * mode soon */
3378                                 atomic_inc(&queue->set_pci_flags_count);
3379                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3380                         }
3381                 } else {
3382                         if (!atomic_read(&queue->set_pci_flags_count)) {
3383                                 /*
3384                                  * there's no outstanding PCI any more, so we
3385                                  * have to request a PCI to be sure the the PCI
3386                                  * will wake at some time in the future then we
3387                                  * can flush packed buffers that might still be
3388                                  * hanging around, which can happen if no
3389                                  * further send was requested by the stack
3390                                  */
3391                                 atomic_inc(&queue->set_pci_flags_count);
3392                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3393                         }
3394                 }
3395         }
3396 
3397         queue->card->dev->trans_start = jiffies;
3398         if (queue->card->options.performance_stats) {
3399                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3400                 queue->card->perf_stats.outbound_do_qdio_start_time =
3401                         qeth_get_micros();
3402         }
3403         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3404         if (atomic_read(&queue->set_pci_flags_count))
3405                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3406         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3407                      queue->queue_no, index, count);
3408         if (queue->card->options.performance_stats)
3409                 queue->card->perf_stats.outbound_do_qdio_time +=
3410                         qeth_get_micros() -
3411                         queue->card->perf_stats.outbound_do_qdio_start_time;
3412         atomic_add(count, &queue->used_buffers);
3413         if (rc) {
3414                 queue->card->stats.tx_errors += count;
3415                 /* ignore temporary SIGA errors without busy condition */
3416                 if (rc == -ENOBUFS)
3417                         return;
3418                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3419                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3420                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3421                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3422                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3423 
3424                 /* this must not happen under normal circumstances. if it
3425                  * happens something is really wrong -> recover */
3426                 qeth_schedule_recovery(queue->card);
3427                 return;
3428         }
3429         if (queue->card->options.performance_stats)
3430                 queue->card->perf_stats.bufs_sent += count;
3431 }
3432 
3433 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3434 {
3435         int index;
3436         int flush_cnt = 0;
3437         int q_was_packing = 0;
3438 
3439         /*
3440          * check if weed have to switch to non-packing mode or if
3441          * we have to get a pci flag out on the queue
3442          */
3443         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3444             !atomic_read(&queue->set_pci_flags_count)) {
3445                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3446                                 QETH_OUT_Q_UNLOCKED) {
3447                         /*
3448                          * If we get in here, there was no action in
3449                          * do_send_packet. So, we check if there is a
3450                          * packing buffer to be flushed here.
3451                          */
3452                         netif_stop_queue(queue->card->dev);
3453                         index = queue->next_buf_to_fill;
3454                         q_was_packing = queue->do_pack;
3455                         /* queue->do_pack may change */
3456                         barrier();
3457                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3458                         if (!flush_cnt &&
3459                             !atomic_read(&queue->set_pci_flags_count))
3460                                 flush_cnt +=
3461                                         qeth_flush_buffers_on_no_pci(queue);
3462                         if (queue->card->options.performance_stats &&
3463                             q_was_packing)
3464                                 queue->card->perf_stats.bufs_sent_pack +=
3465                                         flush_cnt;
3466                         if (flush_cnt)
3467                                 qeth_flush_buffers(queue, index, flush_cnt);
3468                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3469                 }
3470         }
3471 }
3472 
3473 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3474                 unsigned long card_ptr)
3475 {
3476         struct qeth_card *card = (struct qeth_card *)card_ptr;
3477 
3478         if (card->dev && (card->dev->flags & IFF_UP))
3479                 napi_schedule(&card->napi);
3480 }
3481 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3482 
3483 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3484 {
3485         int rc;
3486 
3487         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3488                 rc = -1;
3489                 goto out;
3490         } else {
3491                 if (card->options.cq == cq) {
3492                         rc = 0;
3493                         goto out;
3494                 }
3495 
3496                 if (card->state != CARD_STATE_DOWN &&
3497                     card->state != CARD_STATE_RECOVER) {
3498                         rc = -1;
3499                         goto out;
3500                 }
3501 
3502                 qeth_free_qdio_buffers(card);
3503                 card->options.cq = cq;
3504                 rc = 0;
3505         }
3506 out:
3507         return rc;
3508 
3509 }
3510 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3511 
3512 
3513 static void qeth_qdio_cq_handler(struct qeth_card *card,
3514                 unsigned int qdio_err,
3515                 unsigned int queue, int first_element, int count) {
3516         struct qeth_qdio_q *cq = card->qdio.c_q;
3517         int i;
3518         int rc;
3519 
3520         if (!qeth_is_cq(card, queue))
3521                 goto out;
3522 
3523         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3524         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3525         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3526 
3527         if (qdio_err) {
3528                 netif_stop_queue(card->dev);
3529                 qeth_schedule_recovery(card);
3530                 goto out;
3531         }
3532 
3533         if (card->options.performance_stats) {
3534                 card->perf_stats.cq_cnt++;
3535                 card->perf_stats.cq_start_time = qeth_get_micros();
3536         }
3537 
3538         for (i = first_element; i < first_element + count; ++i) {
3539                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3540                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3541                 int e;
3542 
3543                 e = 0;
3544                 while (buffer->element[e].addr) {
3545                         unsigned long phys_aob_addr;
3546 
3547                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3548                         qeth_qdio_handle_aob(card, phys_aob_addr);
3549                         buffer->element[e].addr = NULL;
3550                         buffer->element[e].eflags = 0;
3551                         buffer->element[e].sflags = 0;
3552                         buffer->element[e].length = 0;
3553 
3554                         ++e;
3555                 }
3556 
3557                 buffer->element[15].eflags = 0;
3558                 buffer->element[15].sflags = 0;
3559         }
3560         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3561                     card->qdio.c_q->next_buf_to_init,
3562                     count);
3563         if (rc) {
3564                 dev_warn(&card->gdev->dev,
3565                         "QDIO reported an error, rc=%i\n", rc);
3566                 QETH_CARD_TEXT(card, 2, "qcqherr");
3567         }
3568         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3569                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3570 
3571         netif_wake_queue(card->dev);
3572 
3573         if (card->options.performance_stats) {
3574                 int delta_t = qeth_get_micros();
3575                 delta_t -= card->perf_stats.cq_start_time;
3576                 card->perf_stats.cq_time += delta_t;
3577         }
3578 out:
3579         return;
3580 }
3581 
3582 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3583                 unsigned int queue, int first_elem, int count,
3584                 unsigned long card_ptr)
3585 {
3586         struct qeth_card *card = (struct qeth_card *)card_ptr;
3587 
3588         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3589         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3590 
3591         if (qeth_is_cq(card, queue))
3592                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3593         else if (qdio_err)
3594                 qeth_schedule_recovery(card);
3595 
3596 
3597 }
3598 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3599 
3600 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3601                 unsigned int qdio_error, int __queue, int first_element,
3602                 int count, unsigned long card_ptr)
3603 {
3604         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3605         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3606         struct qeth_qdio_out_buffer *buffer;
3607         int i;
3608 
3609         QETH_CARD_TEXT(card, 6, "qdouhdl");
3610         if (qdio_error & QDIO_ERROR_FATAL) {
3611                 QETH_CARD_TEXT(card, 2, "achkcond");
3612                 netif_stop_queue(card->dev);
3613                 qeth_schedule_recovery(card);
3614                 return;
3615         }
3616         if (card->options.performance_stats) {
3617                 card->perf_stats.outbound_handler_cnt++;
3618                 card->perf_stats.outbound_handler_start_time =
3619                         qeth_get_micros();
3620         }
3621         for (i = first_element; i < (first_element + count); ++i) {
3622                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3623                 buffer = queue->bufs[bidx];
3624                 qeth_handle_send_error(card, buffer, qdio_error);
3625 
3626                 if (queue->bufstates &&
3627                     (queue->bufstates[bidx].flags &
3628                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3629                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3630 
3631                         if (atomic_cmpxchg(&buffer->state,
3632                                            QETH_QDIO_BUF_PRIMED,
3633                                            QETH_QDIO_BUF_PENDING) ==
3634                                 QETH_QDIO_BUF_PRIMED) {
3635                                 qeth_notify_skbs(queue, buffer,
3636                                                  TX_NOTIFY_PENDING);
3637                         }
3638                         buffer->aob = queue->bufstates[bidx].aob;
3639                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3640                         QETH_CARD_TEXT(queue->card, 5, "aob");
3641                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3642                                         virt_to_phys(buffer->aob));
3643                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3644                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3645                                 qeth_schedule_recovery(card);
3646                         }
3647                 } else {
3648                         if (card->options.cq == QETH_CQ_ENABLED) {
3649                                 enum iucv_tx_notify n;
3650 
3651                                 n = qeth_compute_cq_notification(
3652                                         buffer->buffer->element[15].sflags, 0);
3653                                 qeth_notify_skbs(queue, buffer, n);
3654                         }
3655 
3656                         qeth_clear_output_buffer(queue, buffer,
3657                                                 QETH_QDIO_BUF_EMPTY);
3658                 }
3659                 qeth_cleanup_handled_pending(queue, bidx, 0);
3660         }
3661         atomic_sub(count, &queue->used_buffers);
3662         /* check if we need to do something on this outbound queue */
3663         if (card->info.type != QETH_CARD_TYPE_IQD)
3664                 qeth_check_outbound_queue(queue);
3665 
3666         netif_wake_queue(queue->card->dev);
3667         if (card->options.performance_stats)
3668                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3669                         card->perf_stats.outbound_handler_start_time;
3670 }
3671 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3672 
3673 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3674                         int ipv, int cast_type)
3675 {
3676         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3677                      card->info.type == QETH_CARD_TYPE_OSX))
3678                 return card->qdio.default_out_queue;
3679         switch (card->qdio.no_out_queues) {
3680         case 4:
3681                 if (cast_type && card->info.is_multicast_different)
3682                         return card->info.is_multicast_different &
3683                                 (card->qdio.no_out_queues - 1);
3684                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3685                         const u8 tos = ip_hdr(skb)->tos;
3686 
3687                         if (card->qdio.do_prio_queueing ==
3688                                 QETH_PRIO_Q_ING_TOS) {
3689                                 if (tos & IP_TOS_NOTIMPORTANT)
3690                                         return 3;
3691                                 if (tos & IP_TOS_HIGHRELIABILITY)
3692                                         return 2;
3693                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3694                                         return 1;
3695                                 if (tos & IP_TOS_LOWDELAY)
3696                                         return 0;
3697                         }
3698                         if (card->qdio.do_prio_queueing ==
3699                                 QETH_PRIO_Q_ING_PREC)
3700                                 return 3 - (tos >> 6);
3701                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3702                         /* TODO: IPv6!!! */
3703                 }
3704                 return card->qdio.default_out_queue;
3705         case 1: /* fallthrough for single-out-queue 1920-device */
3706         default:
3707                 return card->qdio.default_out_queue;
3708         }
3709 }
3710 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3711 
3712 int qeth_get_elements_for_frags(struct sk_buff *skb)
3713 {
3714         int cnt, length, e, elements = 0;
3715         struct skb_frag_struct *frag;
3716         char *data;
3717 
3718         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3719                 frag = &skb_shinfo(skb)->frags[cnt];
3720                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3721                         frag->page_offset;
3722                 length = frag->size;
3723                 e = PFN_UP((unsigned long)data + length - 1) -
3724                         PFN_DOWN((unsigned long)data);
3725                 elements += e;
3726         }
3727         return elements;
3728 }
3729 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3730 
3731 int qeth_get_elements_no(struct qeth_card *card,
3732                      struct sk_buff *skb, int elems)
3733 {
3734         int dlen = skb->len - skb->data_len;
3735         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3736                 PFN_DOWN((unsigned long)skb->data);
3737 
3738         elements_needed += qeth_get_elements_for_frags(skb);
3739 
3740         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3741                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3742                         "(Number=%d / Length=%d). Discarded.\n",
3743                         (elements_needed+elems), skb->len);
3744                 return 0;
3745         }
3746         return elements_needed;
3747 }
3748 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3749 
3750 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3751 {
3752         int hroom, inpage, rest;
3753 
3754         if (((unsigned long)skb->data & PAGE_MASK) !=
3755             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3756                 hroom = skb_headroom(skb);
3757                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3758                 rest = len - inpage;
3759                 if (rest > hroom)
3760                         return 1;
3761                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3762                 skb->data -= rest;
3763                 skb->tail -= rest;
3764                 *hdr = (struct qeth_hdr *)skb->data;
3765                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3766         }
3767         return 0;
3768 }
3769 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3770 
3771 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3772         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3773         int offset)
3774 {
3775         int length = skb->len - skb->data_len;
3776         int length_here;
3777         int element;
3778         char *data;
3779         int first_lap, cnt;
3780         struct skb_frag_struct *frag;
3781 
3782         element = *next_element_to_fill;
3783         data = skb->data;
3784         first_lap = (is_tso == 0 ? 1 : 0);
3785 
3786         if (offset >= 0) {
3787                 data = skb->data + offset;
3788                 length -= offset;
3789                 first_lap = 0;
3790         }
3791 
3792         while (length > 0) {
3793                 /* length_here is the remaining amount of data in this page */
3794                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3795                 if (length < length_here)
3796                         length_here = length;
3797 
3798                 buffer->element[element].addr = data;
3799                 buffer->element[element].length = length_here;
3800                 length -= length_here;
3801                 if (!length) {
3802                         if (first_lap)
3803                                 if (skb_shinfo(skb)->nr_frags)
3804                                         buffer->element[element].eflags =
3805                                                 SBAL_EFLAGS_FIRST_FRAG;
3806                                 else
3807                                         buffer->element[element].eflags = 0;
3808                         else
3809                                 buffer->element[element].eflags =
3810                                     SBAL_EFLAGS_MIDDLE_FRAG;
3811                 } else {
3812                         if (first_lap)
3813                                 buffer->element[element].eflags =
3814                                     SBAL_EFLAGS_FIRST_FRAG;
3815                         else
3816                                 buffer->element[element].eflags =
3817                                     SBAL_EFLAGS_MIDDLE_FRAG;
3818                 }
3819                 data += length_here;
3820                 element++;
3821                 first_lap = 0;
3822         }
3823 
3824         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3825                 frag = &skb_shinfo(skb)->frags[cnt];
3826                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3827                         frag->page_offset;
3828                 length = frag->size;
3829                 while (length > 0) {
3830                         length_here = PAGE_SIZE -
3831                                 ((unsigned long) data % PAGE_SIZE);
3832                         if (length < length_here)
3833                                 length_here = length;
3834 
3835                         buffer->element[element].addr = data;
3836                         buffer->element[element].length = length_here;
3837                         buffer->element[element].eflags =
3838                                 SBAL_EFLAGS_MIDDLE_FRAG;
3839                         length -= length_here;
3840                         data += length_here;
3841                         element++;
3842                 }
3843         }
3844 
3845         if (buffer->element[element - 1].eflags)
3846                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3847         *next_element_to_fill = element;
3848 }
3849 
3850 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3851                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3852                 struct qeth_hdr *hdr, int offset, int hd_len)
3853 {
3854         struct qdio_buffer *buffer;
3855         int flush_cnt = 0, hdr_len, large_send = 0;
3856 
3857         buffer = buf->buffer;
3858         atomic_inc(&skb->users);
3859         skb_queue_tail(&buf->skb_list, skb);
3860 
3861         /*check first on TSO ....*/
3862         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3863                 int element = buf->next_element_to_fill;
3864 
3865                 hdr_len = sizeof(struct qeth_hdr_tso) +
3866                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3867                 /*fill first buffer entry only with header information */
3868                 buffer->element[element].addr = skb->data;
3869                 buffer->element[element].length = hdr_len;
3870                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3871                 buf->next_element_to_fill++;
3872                 skb->data += hdr_len;
3873                 skb->len  -= hdr_len;
3874                 large_send = 1;
3875         }
3876 
3877         if (offset >= 0) {
3878                 int element = buf->next_element_to_fill;
3879                 buffer->element[element].addr = hdr;
3880                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3881                                                         hd_len;
3882                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3883                 buf->is_header[element] = 1;
3884                 buf->next_element_to_fill++;
3885         }
3886 
3887         __qeth_fill_buffer(skb, buffer, large_send,
3888                 (int *)&buf->next_element_to_fill, offset);
3889 
3890         if (!queue->do_pack) {
3891                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3892                 /* set state to PRIMED -> will be flushed */
3893                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3894                 flush_cnt = 1;
3895         } else {
3896                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3897                 if (queue->card->options.performance_stats)
3898                         queue->card->perf_stats.skbs_sent_pack++;
3899                 if (buf->next_element_to_fill >=
3900                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3901                         /*
3902                          * packed buffer if full -> set state PRIMED
3903                          * -> will be flushed
3904                          */
3905                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3906                         flush_cnt = 1;
3907                 }
3908         }
3909         return flush_cnt;
3910 }
3911 
3912 int qeth_do_send_packet_fast(struct qeth_card *card,
3913                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3914                 struct qeth_hdr *hdr, int elements_needed,
3915                 int offset, int hd_len)
3916 {
3917         struct qeth_qdio_out_buffer *buffer;
3918         int index;
3919 
3920         /* spin until we get the queue ... */
3921         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3922                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3923         /* ... now we've got the queue */
3924         index = queue->next_buf_to_fill;
3925         buffer = queue->bufs[queue->next_buf_to_fill];
3926         /*
3927          * check if buffer is empty to make sure that we do not 'overtake'
3928          * ourselves and try to fill a buffer that is already primed
3929          */
3930         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3931                 goto out;
3932         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3933                                           QDIO_MAX_BUFFERS_PER_Q;
3934         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3935         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3936         qeth_flush_buffers(queue, index, 1);
3937         return 0;
3938 out:
3939         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3940         return -EBUSY;
3941 }
3942 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3943 
3944 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3945                 struct sk_buff *skb, struct qeth_hdr *hdr,
3946                 int elements_needed)
3947 {
3948         struct qeth_qdio_out_buffer *buffer;
3949         int start_index;
3950         int flush_count = 0;
3951         int do_pack = 0;
3952         int tmp;
3953         int rc = 0;
3954 
3955         /* spin until we get the queue ... */
3956         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3957                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3958         start_index = queue->next_buf_to_fill;
3959         buffer = queue->bufs[queue->next_buf_to_fill];
3960         /*
3961          * check if buffer is empty to make sure that we do not 'overtake'
3962          * ourselves and try to fill a buffer that is already primed
3963          */
3964         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3965                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3966                 return -EBUSY;
3967         }
3968         /* check if we need to switch packing state of this queue */
3969         qeth_switch_to_packing_if_needed(queue);
3970         if (queue->do_pack) {
3971                 do_pack = 1;
3972                 /* does packet fit in current buffer? */
3973                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3974                     buffer->next_element_to_fill) < elements_needed) {
3975                         /* ... no -> set state PRIMED */
3976                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3977                         flush_count++;
3978                         queue->next_buf_to_fill =
3979                                 (queue->next_buf_to_fill + 1) %
3980                                 QDIO_MAX_BUFFERS_PER_Q;
3981                         buffer = queue->bufs[queue->next_buf_to_fill];
3982                         /* we did a step forward, so check buffer state
3983                          * again */
3984                         if (atomic_read(&buffer->state) !=
3985                             QETH_QDIO_BUF_EMPTY) {
3986                                 qeth_flush_buffers(queue, start_index,
3987                                                            flush_count);
3988                                 atomic_set(&queue->state,
3989                                                 QETH_OUT_Q_UNLOCKED);
3990                                 return -EBUSY;
3991                         }
3992                 }
3993         }
3994         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3995         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3996                                   QDIO_MAX_BUFFERS_PER_Q;
3997         flush_count += tmp;
3998         if (flush_count)
3999                 qeth_flush_buffers(queue, start_index, flush_count);
4000         else if (!atomic_read(&queue->set_pci_flags_count))
4001                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4002         /*
4003          * queue->state will go from LOCKED -> UNLOCKED or from
4004          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4005          * (switch packing state or flush buffer to get another pci flag out).
4006          * In that case we will enter this loop
4007          */
4008         while (atomic_dec_return(&queue->state)) {
4009                 flush_count = 0;
4010                 start_index = queue->next_buf_to_fill;
4011                 /* check if we can go back to non-packing state */
4012                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4013                 /*
4014                  * check if we need to flush a packing buffer to get a pci
4015                  * flag out on the queue
4016                  */
4017                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4018                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4019                 if (flush_count)
4020                         qeth_flush_buffers(queue, start_index, flush_count);
4021         }
4022         /* at this point the queue is UNLOCKED again */
4023         if (queue->card->options.performance_stats && do_pack)
4024                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4025 
4026         return rc;
4027 }
4028 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4029 
4030 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4031                 struct qeth_reply *reply, unsigned long data)
4032 {
4033         struct qeth_ipa_cmd *cmd;
4034         struct qeth_ipacmd_setadpparms *setparms;
4035 
4036         QETH_CARD_TEXT(card, 4, "prmadpcb");
4037 
4038         cmd = (struct qeth_ipa_cmd *) data;
4039         setparms = &(cmd->data.setadapterparms);
4040 
4041         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4042         if (cmd->hdr.return_code) {
4043                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4044                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4045         }
4046         card->info.promisc_mode = setparms->data.mode;
4047         return 0;
4048 }
4049 
4050 void qeth_setadp_promisc_mode(struct qeth_card *card)
4051 {
4052         enum qeth_ipa_promisc_modes mode;
4053         struct net_device *dev = card->dev;
4054         struct qeth_cmd_buffer *iob;
4055         struct qeth_ipa_cmd *cmd;
4056 
4057         QETH_CARD_TEXT(card, 4, "setprom");
4058 
4059         if (((dev->flags & IFF_PROMISC) &&
4060              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4061             (!(dev->flags & IFF_PROMISC) &&
4062              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4063                 return;
4064         mode = SET_PROMISC_MODE_OFF;
4065         if (dev->flags & IFF_PROMISC)
4066                 mode = SET_PROMISC_MODE_ON;
4067         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4068 
4069         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4070                         sizeof(struct qeth_ipacmd_setadpparms));
4071         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4072         cmd->data.setadapterparms.data.mode = mode;
4073         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4074 }
4075 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4076 
4077 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4078 {
4079         struct qeth_card *card;
4080         char dbf_text[15];
4081 
4082         card = dev->ml_priv;
4083 
4084         QETH_CARD_TEXT(card, 4, "chgmtu");
4085         sprintf(dbf_text, "%8x", new_mtu);
4086         QETH_CARD_TEXT(card, 4, dbf_text);
4087 
4088         if (new_mtu < 64)
4089                 return -EINVAL;
4090         if (new_mtu > 65535)
4091                 return -EINVAL;
4092         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4093             (!qeth_mtu_is_valid(card, new_mtu)))
4094                 return -EINVAL;
4095         dev->mtu = new_mtu;
4096         return 0;
4097 }
4098 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4099 
4100 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4101 {
4102         struct qeth_card *card;
4103 
4104         card = dev->ml_priv;
4105 
4106         QETH_CARD_TEXT(card, 5, "getstat");
4107 
4108         return &card->stats;
4109 }
4110 EXPORT_SYMBOL_GPL(qeth_get_stats);
4111 
4112 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4113                 struct qeth_reply *reply, unsigned long data)
4114 {
4115         struct qeth_ipa_cmd *cmd;
4116 
4117         QETH_CARD_TEXT(card, 4, "chgmaccb");
4118 
4119         cmd = (struct qeth_ipa_cmd *) data;
4120         if (!card->options.layer2 ||
4121             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4122                 memcpy(card->dev->dev_addr,
4123                        &cmd->data.setadapterparms.data.change_addr.addr,
4124                        OSA_ADDR_LEN);
4125                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4126         }
4127         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4128         return 0;
4129 }
4130 
4131 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4132 {
4133         int rc;
4134         struct qeth_cmd_buffer *iob;
4135         struct qeth_ipa_cmd *cmd;
4136 
4137         QETH_CARD_TEXT(card, 4, "chgmac");
4138 
4139         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4140                                    sizeof(struct qeth_ipacmd_setadpparms));
4141         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4142         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4143         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4144         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4145                card->dev->dev_addr, OSA_ADDR_LEN);
4146         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4147                                NULL);
4148         return rc;
4149 }
4150 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4151 
4152 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4153                 struct qeth_reply *reply, unsigned long data)
4154 {
4155         struct qeth_ipa_cmd *cmd;
4156         struct qeth_set_access_ctrl *access_ctrl_req;
4157         int fallback = *(int *)reply->param;
4158 
4159         QETH_CARD_TEXT(card, 4, "setaccb");
4160 
4161         cmd = (struct qeth_ipa_cmd *) data;
4162         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4163         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4164         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4165         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4166                 cmd->data.setadapterparms.hdr.return_code);
4167         if (cmd->data.setadapterparms.hdr.return_code !=
4168                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4169                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4170                                 card->gdev->dev.kobj.name,
4171                                 access_ctrl_req->subcmd_code,
4172                                 cmd->data.setadapterparms.hdr.return_code);
4173         switch (cmd->data.setadapterparms.hdr.return_code) {
4174         case SET_ACCESS_CTRL_RC_SUCCESS:
4175                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4176                         dev_info(&card->gdev->dev,
4177                             "QDIO data connection isolation is deactivated\n");
4178                 } else {
4179                         dev_info(&card->gdev->dev,
4180                             "QDIO data connection isolation is activated\n");
4181                 }
4182                 break;
4183         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4184                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4185                                 "deactivated\n", dev_name(&card->gdev->dev));
4186                 if (fallback)
4187                         card->options.isolation = card->options.prev_isolation;
4188                 break;
4189         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4190                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4191                                 " activated\n", dev_name(&card->gdev->dev));
4192                 if (fallback)
4193                         card->options.isolation = card->options.prev_isolation;
4194                 break;
4195         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4196                 dev_err(&card->gdev->dev, "Adapter does not "
4197                         "support QDIO data connection isolation\n");
4198                 break;
4199         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4200                 dev_err(&card->gdev->dev,
4201                         "Adapter is dedicated. "
4202                         "QDIO data connection isolation not supported\n");
4203                 if (fallback)
4204                         card->options.isolation = card->options.prev_isolation;
4205                 break;
4206         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4207                 dev_err(&card->gdev->dev,
4208                         "TSO does not permit QDIO data connection isolation\n");
4209                 if (fallback)
4210                         card->options.isolation = card->options.prev_isolation;
4211                 break;
4212         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4213                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4214                         "support reflective relay mode\n");
4215                 if (fallback)
4216                         card->options.isolation = card->options.prev_isolation;
4217                 break;
4218         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4219                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4220                                         "enabled at the adjacent switch port");
4221                 if (fallback)
4222                         card->options.isolation = card->options.prev_isolation;
4223                 break;
4224         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4225                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4226                                         "at the adjacent switch failed\n");
4227                 break;
4228         default:
4229                 /* this should never happen */
4230                 if (fallback)
4231                         card->options.isolation = card->options.prev_isolation;
4232                 break;
4233         }
4234         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4235         return 0;
4236 }
4237 
4238 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4239                 enum qeth_ipa_isolation_modes isolation, int fallback)
4240 {
4241         int rc;
4242         struct qeth_cmd_buffer *iob;
4243         struct qeth_ipa_cmd *cmd;
4244         struct qeth_set_access_ctrl *access_ctrl_req;
4245 
4246         QETH_CARD_TEXT(card, 4, "setacctl");
4247 
4248         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4249         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4250 
4251         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4252                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4253                                    sizeof(struct qeth_set_access_ctrl));
4254         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4255         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4256         access_ctrl_req->subcmd_code = isolation;
4257 
4258         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4259                                &fallback);
4260         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4261         return rc;
4262 }
4263 
4264 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4265 {
4266         int rc = 0;
4267 
4268         QETH_CARD_TEXT(card, 4, "setactlo");
4269 
4270         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4271              card->info.type == QETH_CARD_TYPE_OSX) &&
4272              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4273                 rc = qeth_setadpparms_set_access_ctrl(card,
4274                         card->options.isolation, fallback);
4275                 if (rc) {
4276                         QETH_DBF_MESSAGE(3,
4277                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4278                                 card->gdev->dev.kobj.name,
4279                                 rc);
4280                         rc = -EOPNOTSUPP;
4281                 }
4282         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4283                 card->options.isolation = ISOLATION_MODE_NONE;
4284 
4285                 dev_err(&card->gdev->dev, "Adapter does not "
4286                         "support QDIO data connection isolation\n");
4287                 rc = -EOPNOTSUPP;
4288         }
4289         return rc;
4290 }
4291 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4292 
4293 void qeth_tx_timeout(struct net_device *dev)
4294 {
4295         struct qeth_card *card;
4296 
4297         card = dev->ml_priv;
4298         QETH_CARD_TEXT(card, 4, "txtimeo");
4299         card->stats.tx_errors++;
4300         qeth_schedule_recovery(card);
4301 }
4302 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4303 
4304 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4305 {
4306         struct qeth_card *card = dev->ml_priv;
4307         int rc = 0;
4308 
4309         switch (regnum) {
4310         case MII_BMCR: /* Basic mode control register */
4311                 rc = BMCR_FULLDPLX;
4312                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4313                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4314                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4315                         rc |= BMCR_SPEED100;
4316                 break;
4317         case MII_BMSR: /* Basic mode status register */
4318                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4319                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4320                      BMSR_100BASE4;
4321                 break;
4322         case MII_PHYSID1: /* PHYS ID 1 */
4323                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4324                      dev->dev_addr[2];
4325                 rc = (rc >> 5) & 0xFFFF;
4326                 break;
4327         case MII_PHYSID2: /* PHYS ID 2 */
4328                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4329                 break;
4330         case MII_ADVERTISE: /* Advertisement control reg */
4331                 rc = ADVERTISE_ALL;
4332                 break;
4333         case MII_LPA: /* Link partner ability reg */
4334                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4335                      LPA_100BASE4 | LPA_LPACK;
4336                 break;
4337         case MII_EXPANSION: /* Expansion register */
4338                 break;
4339         case MII_DCOUNTER: /* disconnect counter */
4340                 break;
4341         case MII_FCSCOUNTER: /* false carrier counter */
4342                 break;
4343         case MII_NWAYTEST: /* N-way auto-neg test register */
4344                 break;
4345         case MII_RERRCOUNTER: /* rx error counter */
4346                 rc = card->stats.rx_errors;
4347                 break;
4348         case MII_SREVISION: /* silicon revision */
4349                 break;
4350         case MII_RESV1: /* reserved 1 */
4351                 break;
4352         case MII_LBRERROR: /* loopback, rx, bypass error */
4353                 break;
4354         case MII_PHYADDR: /* physical address */
4355                 break;
4356         case MII_RESV2: /* reserved 2 */
4357                 break;
4358         case MII_TPISTATUS: /* TPI status for 10mbps */
4359                 break;
4360         case MII_NCONFIG: /* network interface config */
4361                 break;
4362         default:
4363                 break;
4364         }
4365         return rc;
4366 }
4367 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4368 
4369 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4370                 struct qeth_cmd_buffer *iob, int len,
4371                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4372                         unsigned long),
4373                 void *reply_param)
4374 {
4375         u16 s1, s2;
4376 
4377         QETH_CARD_TEXT(card, 4, "sendsnmp");
4378 
4379         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4380         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4381                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4382         /* adjust PDU length fields in IPA_PDU_HEADER */
4383         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4384         s2 = (u32) len;
4385         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4386         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4387         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4388         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4389         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4390                                       reply_cb, reply_param);
4391 }
4392 
4393 static int qeth_snmp_command_cb(struct qeth_card *card,
4394                 struct qeth_reply *reply, unsigned long sdata)
4395 {
4396         struct qeth_ipa_cmd *cmd;
4397         struct qeth_arp_query_info *qinfo;
4398         struct qeth_snmp_cmd *snmp;
4399         unsigned char *data;
4400         __u16 data_len;
4401 
4402         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4403 
4404         cmd = (struct qeth_ipa_cmd *) sdata;
4405         data = (unsigned char *)((char *)cmd - reply->offset);
4406         qinfo = (struct qeth_arp_query_info *) reply->param;
4407         snmp = &cmd->data.setadapterparms.data.snmp;
4408 
4409         if (cmd->hdr.return_code) {
4410                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4411                 return 0;
4412         }
4413         if (cmd->data.setadapterparms.hdr.return_code) {
4414                 cmd->hdr.return_code =
4415                         cmd->data.setadapterparms.hdr.return_code;
4416                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4417                 return 0;
4418         }
4419         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4420         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4421                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4422         else
4423                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4424 
4425         /* check if there is enough room in userspace */
4426         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4427                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4428                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4429                 return 0;
4430         }
4431         QETH_CARD_TEXT_(card, 4, "snore%i",
4432                        cmd->data.setadapterparms.hdr.used_total);
4433         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4434                 cmd->data.setadapterparms.hdr.seq_no);
4435         /*copy entries to user buffer*/
4436         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4437                 memcpy(qinfo->udata + qinfo->udata_offset,
4438                        (char *)snmp,
4439                        data_len + offsetof(struct qeth_snmp_cmd, data));
4440                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4441         } else {
4442                 memcpy(qinfo->udata + qinfo->udata_offset,
4443                        (char *)&snmp->request, data_len);
4444         }
4445         qinfo->udata_offset += data_len;
4446         /* check if all replies received ... */
4447                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4448                                cmd->data.setadapterparms.hdr.used_total);
4449                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4450                                cmd->data.setadapterparms.hdr.seq_no);
4451         if (cmd->data.setadapterparms.hdr.seq_no <
4452             cmd->data.setadapterparms.hdr.used_total)
4453                 return 1;
4454         return 0;
4455 }
4456 
4457 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4458 {
4459         struct qeth_cmd_buffer *iob;
4460         struct qeth_ipa_cmd *cmd;
4461         struct qeth_snmp_ureq *ureq;
4462         unsigned int req_len;
4463         struct qeth_arp_query_info qinfo = {0, };
4464         int rc = 0;
4465 
4466         QETH_CARD_TEXT(card, 3, "snmpcmd");
4467 
4468         if (card->info.guestlan)
4469                 return -EOPNOTSUPP;
4470 
4471         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4472             (!card->options.layer2)) {
4473                 return -EOPNOTSUPP;
4474         }
4475         /* skip 4 bytes (data_len struct member) to get req_len */
4476         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4477                 return -EFAULT;
4478         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4479                        sizeof(struct qeth_ipacmd_hdr) -
4480                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4481                 return -EINVAL;
4482         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4483         if (IS_ERR(ureq)) {
4484                 QETH_CARD_TEXT(card, 2, "snmpnome");
4485                 return PTR_ERR(ureq);
4486         }
4487         qinfo.udata_len = ureq->hdr.data_len;
4488         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4489         if (!qinfo.udata) {
4490                 kfree(ureq);
4491                 return -ENOMEM;
4492         }
4493         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4494 
4495         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4496                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4497         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4498         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4499         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4500                                     qeth_snmp_command_cb, (void *)&qinfo);
4501         if (rc)
4502                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4503                            QETH_CARD_IFNAME(card), rc);
4504         else {
4505                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4506                         rc = -EFAULT;
4507         }
4508 
4509         kfree(ureq);
4510         kfree(qinfo.udata);
4511         return rc;
4512 }
4513 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4514 
4515 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4516                 struct qeth_reply *reply, unsigned long data)
4517 {
4518         struct qeth_ipa_cmd *cmd;
4519         struct qeth_qoat_priv *priv;
4520         char *resdata;
4521         int resdatalen;
4522 
4523         QETH_CARD_TEXT(card, 3, "qoatcb");
4524 
4525         cmd = (struct qeth_ipa_cmd *)data;
4526         priv = (struct qeth_qoat_priv *)reply->param;
4527         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4528         resdata = (char *)data + 28;
4529 
4530         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4531                 cmd->hdr.return_code = IPA_RC_FFFF;
4532                 return 0;
4533         }
4534 
4535         memcpy((priv->buffer + priv->response_len), resdata,
4536                 resdatalen);
4537         priv->response_len += resdatalen;
4538 
4539         if (cmd->data.setadapterparms.hdr.seq_no <
4540             cmd->data.setadapterparms.hdr.used_total)
4541                 return 1;
4542         return 0;
4543 }
4544 
4545 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4546 {
4547         int rc = 0;
4548         struct qeth_cmd_buffer *iob;
4549         struct qeth_ipa_cmd *cmd;
4550         struct qeth_query_oat *oat_req;
4551         struct qeth_query_oat_data oat_data;
4552         struct qeth_qoat_priv priv;
4553         void __user *tmp;
4554 
4555         QETH_CARD_TEXT(card, 3, "qoatcmd");
4556 
4557         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4558                 rc = -EOPNOTSUPP;
4559                 goto out;
4560         }
4561 
4562         if (copy_from_user(&oat_data, udata,
4563             sizeof(struct qeth_query_oat_data))) {
4564                         rc = -EFAULT;
4565                         goto out;
4566         }
4567 
4568         priv.buffer_len = oat_data.buffer_len;
4569         priv.response_len = 0;
4570         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4571         if (!priv.buffer) {
4572                 rc = -ENOMEM;
4573                 goto out;
4574         }
4575 
4576         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4577                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4578                                    sizeof(struct qeth_query_oat));
4579         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4580         oat_req = &cmd->data.setadapterparms.data.query_oat;
4581         oat_req->subcmd_code = oat_data.command;
4582 
4583         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4584                                &priv);
4585         if (!rc) {
4586                 if (is_compat_task())
4587                         tmp = compat_ptr(oat_data.ptr);
4588                 else
4589                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4590 
4591                 if (copy_to_user(tmp, priv.buffer,
4592                     priv.response_len)) {
4593                         rc = -EFAULT;
4594                         goto out_free;
4595                 }
4596 
4597                 oat_data.response_len = priv.response_len;
4598 
4599                 if (copy_to_user(udata, &oat_data,
4600                     sizeof(struct qeth_query_oat_data)))
4601                         rc = -EFAULT;
4602         } else
4603                 if (rc == IPA_RC_FFFF)
4604                         rc = -EFAULT;
4605 
4606 out_free:
4607         kfree(priv.buffer);
4608 out:
4609         return rc;
4610 }
4611 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4612 
4613 static int qeth_query_card_info_cb(struct qeth_card *card,
4614                                    struct qeth_reply *reply, unsigned long data)
4615 {
4616         struct qeth_ipa_cmd *cmd;
4617         struct qeth_query_card_info *card_info;
4618         struct carrier_info *carrier_info;
4619 
4620         QETH_CARD_TEXT(card, 2, "qcrdincb");
4621         carrier_info = (struct carrier_info *)reply->param;
4622         cmd = (struct qeth_ipa_cmd *)data;
4623         card_info = &cmd->data.setadapterparms.data.card_info;
4624         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4625                 carrier_info->card_type = card_info->card_type;
4626                 carrier_info->port_mode = card_info->port_mode;
4627                 carrier_info->port_speed = card_info->port_speed;
4628         }
4629 
4630         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4631         return 0;
4632 }
4633 
4634 int qeth_query_card_info(struct qeth_card *card,
4635                                 struct carrier_info *carrier_info)
4636 {
4637         struct qeth_cmd_buffer *iob;
4638 
4639         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4640         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4641                 return -EOPNOTSUPP;
4642         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4643                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4644         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4645                                         (void *)carrier_info);
4646 }
4647 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4648 
4649 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4650 {
4651         switch (card->info.type) {
4652         case QETH_CARD_TYPE_IQD:
4653                 return 2;
4654         default:
4655                 return 0;
4656         }
4657 }
4658 
4659 static void qeth_determine_capabilities(struct qeth_card *card)
4660 {
4661         int rc;
4662         int length;
4663         char *prcd;
4664         struct ccw_device *ddev;
4665         int ddev_offline = 0;
4666 
4667         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4668         ddev = CARD_DDEV(card);
4669         if (!ddev->online) {
4670                 ddev_offline = 1;
4671                 rc = ccw_device_set_online(ddev);
4672                 if (rc) {
4673                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4674                         goto out;
4675                 }
4676         }
4677 
4678         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4679         if (rc) {
4680                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4681                         dev_name(&card->gdev->dev), rc);
4682                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4683                 goto out_offline;
4684         }
4685         qeth_configure_unitaddr(card, prcd);
4686         if (ddev_offline)
4687                 qeth_configure_blkt_default(card, prcd);
4688         kfree(prcd);
4689 
4690         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4691         if (rc)
4692                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4693 
4694         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4695         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4696         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4697         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4698         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4699             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4700             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4701                 dev_info(&card->gdev->dev,
4702                         "Completion Queueing supported\n");
4703         } else {
4704                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4705         }
4706 
4707 
4708 out_offline:
4709         if (ddev_offline == 1)
4710                 ccw_device_set_offline(ddev);
4711 out:
4712         return;
4713 }
4714 
4715 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4716         struct qdio_buffer **in_sbal_ptrs,
4717         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4718         int i;
4719 
4720         if (card->options.cq == QETH_CQ_ENABLED) {
4721                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4722                              (card->qdio.no_in_queues - 1);
4723                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4724                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4725                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4726                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4727                 }
4728 
4729                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4730         }
4731 }
4732 
4733 static int qeth_qdio_establish(struct qeth_card *card)
4734 {
4735         struct qdio_initialize init_data;
4736         char *qib_param_field;
4737         struct qdio_buffer **in_sbal_ptrs;
4738         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4739         struct qdio_buffer **out_sbal_ptrs;
4740         int i, j, k;
4741         int rc = 0;
4742 
4743         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4744 
4745         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4746                               GFP_KERNEL);
4747         if (!qib_param_field) {
4748                 rc =  -ENOMEM;
4749                 goto out_free_nothing;
4750         }
4751 
4752         qeth_create_qib_param_field(card, qib_param_field);
4753         qeth_create_qib_param_field_blkt(card, qib_param_field);
4754 
4755         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4756                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4757                                GFP_KERNEL);
4758         if (!in_sbal_ptrs) {
4759                 rc = -ENOMEM;
4760                 goto out_free_qib_param;
4761         }
4762         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4763                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4764                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4765         }
4766 
4767         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4768                                    GFP_KERNEL);
4769         if (!queue_start_poll) {
4770                 rc = -ENOMEM;
4771                 goto out_free_in_sbals;
4772         }
4773         for (i = 0; i < card->qdio.no_in_queues; ++i)
4774                 queue_start_poll[i] = card->discipline->start_poll;
4775 
4776         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4777 
4778         out_sbal_ptrs =
4779                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4780                         sizeof(void *), GFP_KERNEL);
4781         if (!out_sbal_ptrs) {
4782                 rc = -ENOMEM;
4783                 goto out_free_queue_start_poll;
4784         }
4785         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4786                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4787                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4788                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4789                 }
4790 
4791         memset(&init_data, 0, sizeof(struct qdio_initialize));
4792         init_data.cdev                   = CARD_DDEV(card);
4793         init_data.q_format               = qeth_get_qdio_q_format(card);
4794         init_data.qib_param_field_format = 0;
4795         init_data.qib_param_field        = qib_param_field;
4796         init_data.no_input_qs            = card->qdio.no_in_queues;
4797         init_data.no_output_qs           = card->qdio.no_out_queues;
4798         init_data.input_handler          = card->discipline->input_handler;
4799         init_data.output_handler         = card->discipline->output_handler;
4800         init_data.queue_start_poll_array = queue_start_poll;
4801         init_data.int_parm               = (unsigned long) card;
4802         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4803         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4804         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4805         init_data.scan_threshold =
4806                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4807 
4808         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4809                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4810                 rc = qdio_allocate(&init_data);
4811                 if (rc) {
4812                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4813                         goto out;
4814                 }
4815                 rc = qdio_establish(&init_data);
4816                 if (rc) {
4817                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4818                         qdio_free(CARD_DDEV(card));
4819                 }
4820         }
4821 
4822         switch (card->options.cq) {
4823         case QETH_CQ_ENABLED:
4824                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4825                 break;
4826         case QETH_CQ_DISABLED:
4827                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4828                 break;
4829         default:
4830                 break;
4831         }
4832 out:
4833         kfree(out_sbal_ptrs);
4834 out_free_queue_start_poll:
4835         kfree(queue_start_poll);
4836 out_free_in_sbals:
4837         kfree(in_sbal_ptrs);
4838 out_free_qib_param:
4839         kfree(qib_param_field);
4840 out_free_nothing:
4841         return rc;
4842 }
4843 
4844 static void qeth_core_free_card(struct qeth_card *card)
4845 {
4846 
4847         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4848         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4849         qeth_clean_channel(&card->read);
4850         qeth_clean_channel(&card->write);
4851         if (card->dev)
4852                 free_netdev(card->dev);
4853         kfree(card->ip_tbd_list);
4854         qeth_free_qdio_buffers(card);
4855         unregister_service_level(&card->qeth_service_level);
4856         kfree(card);
4857 }
4858 
4859 void qeth_trace_features(struct qeth_card *card)
4860 {
4861         QETH_CARD_TEXT(card, 2, "features");
4862         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4863         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4864         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4865         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4866         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4867         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4868         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4869 }
4870 EXPORT_SYMBOL_GPL(qeth_trace_features);
4871 
4872 static struct ccw_device_id qeth_ids[] = {
4873         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4874                                         .driver_info = QETH_CARD_TYPE_OSD},
4875         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4876                                         .driver_info = QETH_CARD_TYPE_IQD},
4877         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4878                                         .driver_info = QETH_CARD_TYPE_OSN},
4879         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4880                                         .driver_info = QETH_CARD_TYPE_OSM},
4881         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4882                                         .driver_info = QETH_CARD_TYPE_OSX},
4883         {},
4884 };
4885 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4886 
4887 static struct ccw_driver qeth_ccw_driver = {
4888         .driver = {
4889                 .owner = THIS_MODULE,
4890                 .name = "qeth",
4891         },
4892         .ids = qeth_ids,
4893         .probe = ccwgroup_probe_ccwdev,
4894         .remove = ccwgroup_remove_ccwdev,
4895 };
4896 
4897 int qeth_core_hardsetup_card(struct qeth_card *card)
4898 {
4899         int retries = 3;
4900         int rc;
4901 
4902         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4903         atomic_set(&card->force_alloc_skb, 0);
4904         qeth_update_from_chp_desc(card);
4905 retry:
4906         if (retries < 3)
4907                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4908                         dev_name(&card->gdev->dev));
4909         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4910         ccw_device_set_offline(CARD_DDEV(card));
4911         ccw_device_set_offline(CARD_WDEV(card));
4912         ccw_device_set_offline(CARD_RDEV(card));
4913         qdio_free(CARD_DDEV(card));
4914         rc = ccw_device_set_online(CARD_RDEV(card));
4915         if (rc)
4916                 goto retriable;
4917         rc = ccw_device_set_online(CARD_WDEV(card));
4918         if (rc)
4919                 goto retriable;
4920         rc = ccw_device_set_online(CARD_DDEV(card));
4921         if (rc)
4922                 goto retriable;
4923 retriable:
4924         if (rc == -ERESTARTSYS) {
4925                 QETH_DBF_TEXT(SETUP, 2, "break1");
4926                 return rc;
4927         } else if (rc) {
4928                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4929                 if (--retries < 0)
4930                         goto out;
4931                 else
4932                         goto retry;
4933         }
4934         qeth_determine_capabilities(card);
4935         qeth_init_tokens(card);
4936         qeth_init_func_level(card);
4937         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4938         if (rc == -ERESTARTSYS) {
4939                 QETH_DBF_TEXT(SETUP, 2, "break2");
4940                 return rc;
4941         } else if (rc) {
4942                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4943                 if (--retries < 0)
4944                         goto out;
4945                 else
4946                         goto retry;
4947         }
4948         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4949         if (rc == -ERESTARTSYS) {
4950                 QETH_DBF_TEXT(SETUP, 2, "break3");
4951                 return rc;
4952         } else if (rc) {
4953                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4954                 if (--retries < 0)
4955                         goto out;
4956                 else
4957                         goto retry;
4958         }
4959         card->read_or_write_problem = 0;
4960         rc = qeth_mpc_initialize(card);
4961         if (rc) {
4962                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4963                 goto out;
4964         }
4965 
4966         card->options.ipa4.supported_funcs = 0;
4967         card->options.adp.supported_funcs = 0;
4968         card->options.sbp.supported_funcs = 0;
4969         card->info.diagass_support = 0;
4970         qeth_query_ipassists(card, QETH_PROT_IPV4);
4971         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4972                 qeth_query_setadapterparms(card);
4973         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4974                 qeth_query_setdiagass(card);
4975         return 0;
4976 out:
4977         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4978                 "an error on the device\n");
4979         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4980                 dev_name(&card->gdev->dev), rc);
4981         return rc;
4982 }
4983 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4984 
4985 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4986                 struct qdio_buffer_element *element,
4987                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4988 {
4989         struct page *page = virt_to_page(element->addr);
4990         if (*pskb == NULL) {
4991                 if (qethbuffer->rx_skb) {
4992                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4993                         *pskb = qethbuffer->rx_skb;
4994                         qethbuffer->rx_skb = NULL;
4995                 } else {
4996                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4997                         if (!(*pskb))
4998                                 return -ENOMEM;
4999                 }
5000 
5001                 skb_reserve(*pskb, ETH_HLEN);
5002                 if (data_len <= QETH_RX_PULL_LEN) {
5003                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5004                                 data_len);
5005                 } else {
5006                         get_page(page);
5007                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5008                                element->addr + offset, QETH_RX_PULL_LEN);
5009                         skb_fill_page_desc(*pskb, *pfrag, page,
5010                                 offset + QETH_RX_PULL_LEN,
5011                                 data_len - QETH_RX_PULL_LEN);
5012                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5013                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5014                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5015                         (*pfrag)++;
5016                 }
5017         } else {
5018                 get_page(page);
5019                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5020                 (*pskb)->data_len += data_len;
5021                 (*pskb)->len      += data_len;
5022                 (*pskb)->truesize += data_len;
5023                 (*pfrag)++;
5024         }
5025 
5026 
5027         return 0;
5028 }
5029 
5030 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5031                 struct qeth_qdio_buffer *qethbuffer,
5032                 struct qdio_buffer_element **__element, int *__offset,
5033                 struct qeth_hdr **hdr)
5034 {
5035         struct qdio_buffer_element *element = *__element;
5036         struct qdio_buffer *buffer = qethbuffer->buffer;
5037         int offset = *__offset;
5038         struct sk_buff *skb = NULL;
5039         int skb_len = 0;
5040         void *data_ptr;
5041         int data_len;
5042         int headroom = 0;
5043         int use_rx_sg = 0;
5044         int frag = 0;
5045 
5046         /* qeth_hdr must not cross element boundaries */
5047         if (element->length < offset + sizeof(struct qeth_hdr)) {
5048                 if (qeth_is_last_sbale(element))
5049                         return NULL;
5050                 element++;
5051                 offset = 0;
5052                 if (element->length < sizeof(struct qeth_hdr))
5053                         return NULL;
5054         }
5055         *hdr = element->addr + offset;
5056 
5057         offset += sizeof(struct qeth_hdr);
5058         switch ((*hdr)->hdr.l2.id) {
5059         case QETH_HEADER_TYPE_LAYER2:
5060                 skb_len = (*hdr)->hdr.l2.pkt_length;
5061                 break;
5062         case QETH_HEADER_TYPE_LAYER3:
5063                 skb_len = (*hdr)->hdr.l3.length;
5064                 headroom = ETH_HLEN;
5065                 break;
5066         case QETH_HEADER_TYPE_OSN:
5067                 skb_len = (*hdr)->hdr.osn.pdu_length;
5068                 headroom = sizeof(struct qeth_hdr);
5069                 break;
5070         default:
5071                 break;
5072         }
5073 
5074         if (!skb_len)
5075                 return NULL;
5076 
5077         if (((skb_len >= card->options.rx_sg_cb) &&
5078              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5079              (!atomic_read(&card->force_alloc_skb))) ||
5080             (card->options.cq == QETH_CQ_ENABLED)) {
5081                 use_rx_sg = 1;
5082         } else {
5083                 skb = dev_alloc_skb(skb_len + headroom);
5084                 if (!skb)
5085                         goto no_mem;
5086                 if (headroom)
5087                         skb_reserve(skb, headroom);
5088         }
5089 
5090         data_ptr = element->addr + offset;
5091         while (skb_len) {
5092                 data_len = min(skb_len, (int)(element->length - offset));
5093                 if (data_len) {
5094                         if (use_rx_sg) {
5095                                 if (qeth_create_skb_frag(qethbuffer, element,
5096                                     &skb, offset, &frag, data_len))
5097                                         goto no_mem;
5098                         } else {
5099                                 memcpy(skb_put(skb, data_len), data_ptr,
5100                                         data_len);
5101                         }
5102                 }
5103                 skb_len -= data_len;
5104                 if (skb_len) {
5105                         if (qeth_is_last_sbale(element)) {
5106                                 QETH_CARD_TEXT(card, 4, "unexeob");
5107                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5108                                 dev_kfree_skb_any(skb);
5109                                 card->stats.rx_errors++;
5110                                 return NULL;
5111                         }
5112                         element++;
5113                         offset = 0;
5114                         data_ptr = element->addr;
5115                 } else {
5116                         offset += data_len;
5117                 }
5118         }
5119         *__element = element;
5120         *__offset = offset;
5121         if (use_rx_sg && card->options.performance_stats) {
5122                 card->perf_stats.sg_skbs_rx++;
5123                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5124         }
5125         return skb;
5126 no_mem:
5127         if (net_ratelimit()) {
5128                 QETH_CARD_TEXT(card, 2, "noskbmem");
5129         }
5130         card->stats.rx_dropped++;
5131         return NULL;
5132 }
5133 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5134 
5135 static void qeth_unregister_dbf_views(void)
5136 {
5137         int x;
5138         for (x = 0; x < QETH_DBF_INFOS; x++) {
5139                 debug_unregister(qeth_dbf[x].id);
5140                 qeth_dbf[x].id = NULL;
5141         }
5142 }
5143 
5144 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5145 {
5146         char dbf_txt_buf[32];
5147         va_list args;
5148 
5149         if (!debug_level_enabled(id, level))
5150                 return;
5151         va_start(args, fmt);
5152         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5153         va_end(args);
5154         debug_text_event(id, level, dbf_txt_buf);
5155 }
5156 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5157 
5158 static int qeth_register_dbf_views(void)
5159 {
5160         int ret;
5161         int x;
5162 
5163         for (x = 0; x < QETH_DBF_INFOS; x++) {
5164                 /* register the areas */
5165                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5166                                                 qeth_dbf[x].pages,
5167                                                 qeth_dbf[x].areas,
5168                                                 qeth_dbf[x].len);
5169                 if (qeth_dbf[x].id == NULL) {
5170                         qeth_unregister_dbf_views();
5171                         return -ENOMEM;
5172                 }
5173 
5174                 /* register a view */
5175                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5176                 if (ret) {
5177                         qeth_unregister_dbf_views();
5178                         return ret;
5179                 }
5180 
5181                 /* set a passing level */
5182                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5183         }
5184 
5185         return 0;
5186 }
5187 
5188 int qeth_core_load_discipline(struct qeth_card *card,
5189                 enum qeth_discipline_id discipline)
5190 {
5191         int rc = 0;
5192         mutex_lock(&qeth_mod_mutex);
5193         switch (discipline) {
5194         case QETH_DISCIPLINE_LAYER3:
5195                 card->discipline = try_then_request_module(
5196                         symbol_get(qeth_l3_discipline), "qeth_l3");
5197                 break;
5198         case QETH_DISCIPLINE_LAYER2:
5199                 card->discipline = try_then_request_module(
5200                         symbol_get(qeth_l2_discipline), "qeth_l2");
5201                 break;
5202         }
5203         if (!card->discipline) {
5204                 dev_err(&card->gdev->dev, "There is no kernel module to "
5205                         "support discipline %d\n", discipline);
5206                 rc = -EINVAL;
5207         }
5208         mutex_unlock(&qeth_mod_mutex);
5209         return rc;
5210 }
5211 
5212 void qeth_core_free_discipline(struct qeth_card *card)
5213 {
5214         if (card->options.layer2)
5215                 symbol_put(qeth_l2_discipline);
5216         else
5217                 symbol_put(qeth_l3_discipline);
5218         card->discipline = NULL;
5219 }
5220 
5221 static const struct device_type qeth_generic_devtype = {
5222         .name = "qeth_generic",
5223         .groups = qeth_generic_attr_groups,
5224 };
5225 static const struct device_type qeth_osn_devtype = {
5226         .name = "qeth_osn",
5227         .groups = qeth_osn_attr_groups,
5228 };
5229 
5230 #define DBF_NAME_LEN    20
5231 
5232 struct qeth_dbf_entry {
5233         char dbf_name[DBF_NAME_LEN];
5234         debug_info_t *dbf_info;
5235         struct list_head dbf_list;
5236 };
5237 
5238 static LIST_HEAD(qeth_dbf_list);
5239 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5240 
5241 static debug_info_t *qeth_get_dbf_entry(char *name)
5242 {
5243         struct qeth_dbf_entry *entry;
5244         debug_info_t *rc = NULL;
5245 
5246         mutex_lock(&qeth_dbf_list_mutex);
5247         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5248                 if (strcmp(entry->dbf_name, name) == 0) {
5249                         rc = entry->dbf_info;
5250                         break;
5251                 }
5252         }
5253         mutex_unlock(&qeth_dbf_list_mutex);
5254         return rc;
5255 }
5256 
5257 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5258 {
5259         struct qeth_dbf_entry *new_entry;
5260 
5261         card->debug = debug_register(name, 2, 1, 8);
5262         if (!card->debug) {
5263                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5264                 goto err;
5265         }
5266         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5267                 goto err_dbg;
5268         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5269         if (!new_entry)
5270                 goto err_dbg;
5271         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5272         new_entry->dbf_info = card->debug;
5273         mutex_lock(&qeth_dbf_list_mutex);
5274         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5275         mutex_unlock(&qeth_dbf_list_mutex);
5276 
5277         return 0;
5278 
5279 err_dbg:
5280         debug_unregister(card->debug);
5281 err:
5282         return -ENOMEM;
5283 }
5284 
5285 static void qeth_clear_dbf_list(void)
5286 {
5287         struct qeth_dbf_entry *entry, *tmp;
5288 
5289         mutex_lock(&qeth_dbf_list_mutex);
5290         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5291                 list_del(&entry->dbf_list);
5292                 debug_unregister(entry->dbf_info);
5293                 kfree(entry);
5294         }
5295         mutex_unlock(&qeth_dbf_list_mutex);
5296 }
5297 
5298 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5299 {
5300         struct qeth_card *card;
5301         struct device *dev;
5302         int rc;
5303         unsigned long flags;
5304         char dbf_name[DBF_NAME_LEN];
5305 
5306         QETH_DBF_TEXT(SETUP, 2, "probedev");
5307 
5308         dev = &gdev->dev;
5309         if (!get_device(dev))
5310                 return -ENODEV;
5311 
5312         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5313 
5314         card = qeth_alloc_card();
5315         if (!card) {
5316                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5317                 rc = -ENOMEM;
5318                 goto err_dev;
5319         }
5320 
5321         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5322                 dev_name(&gdev->dev));
5323         card->debug = qeth_get_dbf_entry(dbf_name);
5324         if (!card->debug) {
5325                 rc = qeth_add_dbf_entry(card, dbf_name);
5326                 if (rc)
5327                         goto err_card;
5328         }
5329 
5330         card->read.ccwdev  = gdev->cdev[0];
5331         card->write.ccwdev = gdev->cdev[1];
5332         card->data.ccwdev  = gdev->cdev[2];
5333         dev_set_drvdata(&gdev->dev, card);
5334         card->gdev = gdev;
5335         gdev->cdev[0]->handler = qeth_irq;
5336         gdev->cdev[1]->handler = qeth_irq;
5337         gdev->cdev[2]->handler = qeth_irq;
5338 
5339         rc = qeth_determine_card_type(card);
5340         if (rc) {
5341                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5342                 goto err_card;
5343         }
5344         rc = qeth_setup_card(card);
5345         if (rc) {
5346                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5347                 goto err_card;
5348         }
5349 
5350         if (card->info.type == QETH_CARD_TYPE_OSN)
5351                 gdev->dev.type = &qeth_osn_devtype;
5352         else
5353                 gdev->dev.type = &qeth_generic_devtype;
5354 
5355         switch (card->info.type) {
5356         case QETH_CARD_TYPE_OSN:
5357         case QETH_CARD_TYPE_OSM:
5358                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5359                 if (rc)
5360                         goto err_card;
5361                 rc = card->discipline->setup(card->gdev);
5362                 if (rc)
5363                         goto err_disc;
5364         case QETH_CARD_TYPE_OSD:
5365         case QETH_CARD_TYPE_OSX:
5366         default:
5367                 break;
5368         }
5369 
5370         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5371         list_add_tail(&card->list, &qeth_core_card_list.list);
5372         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5373 
5374         qeth_determine_capabilities(card);
5375         return 0;
5376 
5377 err_disc:
5378         qeth_core_free_discipline(card);
5379 err_card:
5380         qeth_core_free_card(card);
5381 err_dev:
5382         put_device(dev);
5383         return rc;
5384 }
5385 
5386 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5387 {
5388         unsigned long flags;
5389         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5390 
5391         QETH_DBF_TEXT(SETUP, 2, "removedv");
5392 
5393         if (card->discipline) {
5394                 card->discipline->remove(gdev);
5395                 qeth_core_free_discipline(card);
5396         }
5397 
5398         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5399         list_del(&card->list);
5400         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5401         qeth_core_free_card(card);
5402         dev_set_drvdata(&gdev->dev, NULL);
5403         put_device(&gdev->dev);
5404         return;
5405 }
5406 
5407 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5408 {
5409         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5410         int rc = 0;
5411         int def_discipline;
5412 
5413         if (!card->discipline) {
5414                 if (card->info.type == QETH_CARD_TYPE_IQD)
5415                         def_discipline = QETH_DISCIPLINE_LAYER3;
5416                 else
5417                         def_discipline = QETH_DISCIPLINE_LAYER2;
5418                 rc = qeth_core_load_discipline(card, def_discipline);
5419                 if (rc)
5420                         goto err;
5421                 rc = card->discipline->setup(card->gdev);
5422                 if (rc)
5423                         goto err;
5424         }
5425         rc = card->discipline->set_online(gdev);
5426 err:
5427         return rc;
5428 }
5429 
5430 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5431 {
5432         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5433         return card->discipline->set_offline(gdev);
5434 }
5435 
5436 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5437 {
5438         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5439         if (card->discipline && card->discipline->shutdown)
5440                 card->discipline->shutdown(gdev);
5441 }
5442 
5443 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5444 {
5445         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5446         if (card->discipline && card->discipline->prepare)
5447                 return card->discipline->prepare(gdev);
5448         return 0;
5449 }
5450 
5451 static void qeth_core_complete(struct ccwgroup_device *gdev)
5452 {
5453         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5454         if (card->discipline && card->discipline->complete)
5455                 card->discipline->complete(gdev);
5456 }
5457 
5458 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5459 {
5460         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5461         if (card->discipline && card->discipline->freeze)
5462                 return card->discipline->freeze(gdev);
5463         return 0;
5464 }
5465 
5466 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5467 {
5468         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5469         if (card->discipline && card->discipline->thaw)
5470                 return card->discipline->thaw(gdev);
5471         return 0;
5472 }
5473 
5474 static int qeth_core_restore(struct ccwgroup_device *gdev)
5475 {
5476         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5477         if (card->discipline && card->discipline->restore)
5478                 return card->discipline->restore(gdev);
5479         return 0;
5480 }
5481 
5482 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5483         .driver = {
5484                 .owner = THIS_MODULE,
5485                 .name = "qeth",
5486         },
5487         .setup = qeth_core_probe_device,
5488         .remove = qeth_core_remove_device,
5489         .set_online = qeth_core_set_online,
5490         .set_offline = qeth_core_set_offline,
5491         .shutdown = qeth_core_shutdown,
5492         .prepare = qeth_core_prepare,
5493         .complete = qeth_core_complete,
5494         .freeze = qeth_core_freeze,
5495         .thaw = qeth_core_thaw,
5496         .restore = qeth_core_restore,
5497 };
5498 
5499 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5500                                             const char *buf, size_t count)
5501 {
5502         int err;
5503 
5504         err = ccwgroup_create_dev(qeth_core_root_dev,
5505                                   &qeth_core_ccwgroup_driver, 3, buf);
5506 
5507         return err ? err : count;
5508 }
5509 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5510 
5511 static struct attribute *qeth_drv_attrs[] = {
5512         &driver_attr_group.attr,
5513         NULL,
5514 };
5515 static struct attribute_group qeth_drv_attr_group = {
5516         .attrs = qeth_drv_attrs,
5517 };
5518 static const struct attribute_group *qeth_drv_attr_groups[] = {
5519         &qeth_drv_attr_group,
5520         NULL,
5521 };
5522 
5523 static struct {
5524         const char str[ETH_GSTRING_LEN];
5525 } qeth_ethtool_stats_keys[] = {
5526 /*  0 */{"rx skbs"},
5527         {"rx buffers"},
5528         {"tx skbs"},
5529         {"tx buffers"},
5530         {"tx skbs no packing"},
5531         {"tx buffers no packing"},
5532         {"tx skbs packing"},
5533         {"tx buffers packing"},
5534         {"tx sg skbs"},
5535         {"tx sg frags"},
5536 /* 10 */{"rx sg skbs"},
5537         {"rx sg frags"},
5538         {"rx sg page allocs"},
5539         {"tx large kbytes"},
5540         {"tx large count"},
5541         {"tx pk state ch n->p"},
5542         {"tx pk state ch p->n"},
5543         {"tx pk watermark low"},
5544         {"tx pk watermark high"},
5545         {"queue 0 buffer usage"},
5546 /* 20 */{"queue 1 buffer usage"},
5547         {"queue 2 buffer usage"},
5548         {"queue 3 buffer usage"},
5549         {"rx poll time"},
5550         {"rx poll count"},
5551         {"rx do_QDIO time"},
5552         {"rx do_QDIO count"},
5553         {"tx handler time"},
5554         {"tx handler count"},
5555         {"tx time"},
5556 /* 30 */{"tx count"},
5557         {"tx do_QDIO time"},
5558         {"tx do_QDIO count"},
5559         {"tx csum"},
5560         {"tx lin"},
5561         {"cq handler count"},
5562         {"cq handler time"}
5563 };
5564 
5565 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5566 {
5567         switch (stringset) {
5568         case ETH_SS_STATS:
5569                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5570         default:
5571                 return -EINVAL;
5572         }
5573 }
5574 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5575 
5576 void qeth_core_get_ethtool_stats(struct net_device *dev,
5577                 struct ethtool_stats *stats, u64 *data)
5578 {
5579         struct qeth_card *card = dev->ml_priv;
5580         data[0] = card->stats.rx_packets -
5581                                 card->perf_stats.initial_rx_packets;
5582         data[1] = card->perf_stats.bufs_rec;
5583         data[2] = card->stats.tx_packets -
5584                                 card->perf_stats.initial_tx_packets;
5585         data[3] = card->perf_stats.bufs_sent;
5586         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5587                         - card->perf_stats.skbs_sent_pack;
5588         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5589         data[6] = card->perf_stats.skbs_sent_pack;
5590         data[7] = card->perf_stats.bufs_sent_pack;
5591         data[8] = card->perf_stats.sg_skbs_sent;
5592         data[9] = card->perf_stats.sg_frags_sent;
5593         data[10] = card->perf_stats.sg_skbs_rx;
5594         data[11] = card->perf_stats.sg_frags_rx;
5595         data[12] = card->perf_stats.sg_alloc_page_rx;
5596         data[13] = (card->perf_stats.large_send_bytes >> 10);
5597         data[14] = card->perf_stats.large_send_cnt;
5598         data[15] = card->perf_stats.sc_dp_p;
5599         data[16] = card->perf_stats.sc_p_dp;
5600         data[17] = QETH_LOW_WATERMARK_PACK;
5601         data[18] = QETH_HIGH_WATERMARK_PACK;
5602         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5603         data[20] = (card->qdio.no_out_queues > 1) ?
5604                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5605         data[21] = (card->qdio.no_out_queues > 2) ?
5606                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5607         data[22] = (card->qdio.no_out_queues > 3) ?
5608                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5609         data[23] = card->perf_stats.inbound_time;
5610         data[24] = card->perf_stats.inbound_cnt;
5611         data[25] = card->perf_stats.inbound_do_qdio_time;
5612         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5613         data[27] = card->perf_stats.outbound_handler_time;
5614         data[28] = card->perf_stats.outbound_handler_cnt;
5615         data[29] = card->perf_stats.outbound_time;
5616         data[30] = card->perf_stats.outbound_cnt;
5617         data[31] = card->perf_stats.outbound_do_qdio_time;
5618         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5619         data[33] = card->perf_stats.tx_csum;
5620         data[34] = card->perf_stats.tx_lin;
5621         data[35] = card->perf_stats.cq_cnt;
5622         data[36] = card->perf_stats.cq_time;
5623 }
5624 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5625 
5626 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5627 {
5628         switch (stringset) {
5629         case ETH_SS_STATS:
5630                 memcpy(data, &qeth_ethtool_stats_keys,
5631                         sizeof(qeth_ethtool_stats_keys));
5632                 break;
5633         default:
5634                 WARN_ON(1);
5635                 break;
5636         }
5637 }
5638 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5639 
5640 void qeth_core_get_drvinfo(struct net_device *dev,
5641                 struct ethtool_drvinfo *info)
5642 {
5643         struct qeth_card *card = dev->ml_priv;
5644 
5645         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5646                 sizeof(info->driver));
5647         strlcpy(info->version, "1.0", sizeof(info->version));
5648         strlcpy(info->fw_version, card->info.mcl_level,
5649                 sizeof(info->fw_version));
5650         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5651                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5652 }
5653 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5654 
5655 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5656 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5657 /* Always advertize and support all speeds up to specified, and only one     */
5658 /* specified port type.                                                      */
5659 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5660                                 int maxspeed, int porttype)
5661 {
5662         int port_sup, port_adv, spd_sup, spd_adv;
5663 
5664         switch (porttype) {
5665         case PORT_TP:
5666                 port_sup = SUPPORTED_TP;
5667                 port_adv = ADVERTISED_TP;
5668                 break;
5669         case PORT_FIBRE:
5670                 port_sup = SUPPORTED_FIBRE;
5671                 port_adv = ADVERTISED_FIBRE;
5672                 break;
5673         default:
5674                 port_sup = SUPPORTED_TP;
5675                 port_adv = ADVERTISED_TP;
5676                 WARN_ON_ONCE(1);
5677         }
5678 
5679         /* "Fallthrough" case'es ordered from high to low result in setting  */
5680         /* flags cumulatively, starting from the specified speed and down to */
5681         /* the lowest possible.                                              */
5682         spd_sup = 0;
5683         spd_adv = 0;
5684         switch (maxspeed) {
5685         case SPEED_10000:
5686                 spd_sup |= SUPPORTED_10000baseT_Full;
5687                 spd_adv |= ADVERTISED_10000baseT_Full;
5688         case SPEED_1000:
5689                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5690                 spd_adv |= ADVERTISED_1000baseT_Half |
5691                                                 ADVERTISED_1000baseT_Full;
5692         case SPEED_100:
5693                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5694                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5695         case SPEED_10:
5696                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5697                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5698         break;
5699         default:
5700                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5701                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5702                 WARN_ON_ONCE(1);
5703         }
5704         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5705         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5706 }
5707 
5708 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5709                                         struct ethtool_cmd *ecmd)
5710 {
5711         struct qeth_card *card = netdev->ml_priv;
5712         enum qeth_link_types link_type;
5713         struct carrier_info carrier_info;
5714 
5715         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5716                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5717         else
5718                 link_type = card->info.link_type;
5719 
5720         ecmd->transceiver = XCVR_INTERNAL;
5721         ecmd->duplex = DUPLEX_FULL;
5722         ecmd->autoneg = AUTONEG_ENABLE;
5723 
5724         switch (link_type) {
5725         case QETH_LINK_TYPE_FAST_ETH:
5726         case QETH_LINK_TYPE_LANE_ETH100:
5727                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5728                 ecmd->speed = SPEED_100;
5729                 ecmd->port = PORT_TP;
5730                 break;
5731 
5732         case QETH_LINK_TYPE_GBIT_ETH:
5733         case QETH_LINK_TYPE_LANE_ETH1000:
5734                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5735                 ecmd->speed = SPEED_1000;
5736                 ecmd->port = PORT_FIBRE;
5737                 break;
5738 
5739         case QETH_LINK_TYPE_10GBIT_ETH:
5740                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5741                 ecmd->speed = SPEED_10000;
5742                 ecmd->port = PORT_FIBRE;
5743                 break;
5744 
5745         default:
5746                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5747                 ecmd->speed = SPEED_10;
5748                 ecmd->port = PORT_TP;
5749         }
5750 
5751         /* Check if we can obtain more accurate information.     */
5752         /* If QUERY_CARD_INFO command is not supported or fails, */
5753         /* just return the heuristics that was filled above.     */
5754         if (qeth_query_card_info(card, &carrier_info) != 0)
5755                 return 0;
5756 
5757         netdev_dbg(netdev,
5758         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5759                         carrier_info.card_type,
5760                         carrier_info.port_mode,
5761                         carrier_info.port_speed);
5762 
5763         /* Update attributes for which we've obtained more authoritative */
5764         /* information, leave the rest the way they where filled above.  */
5765         switch (carrier_info.card_type) {
5766         case CARD_INFO_TYPE_1G_COPPER_A:
5767         case CARD_INFO_TYPE_1G_COPPER_B:
5768                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5769                 ecmd->port = PORT_TP;
5770                 break;
5771         case CARD_INFO_TYPE_1G_FIBRE_A:
5772         case CARD_INFO_TYPE_1G_FIBRE_B:
5773                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5774                 ecmd->port = PORT_FIBRE;
5775                 break;
5776         case CARD_INFO_TYPE_10G_FIBRE_A:
5777         case CARD_INFO_TYPE_10G_FIBRE_B:
5778                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5779                 ecmd->port = PORT_FIBRE;
5780                 break;
5781         }
5782 
5783         switch (carrier_info.port_mode) {
5784         case CARD_INFO_PORTM_FULLDUPLEX:
5785                 ecmd->duplex = DUPLEX_FULL;
5786                 break;
5787         case CARD_INFO_PORTM_HALFDUPLEX:
5788                 ecmd->duplex = DUPLEX_HALF;
5789                 break;
5790         }
5791 
5792         switch (carrier_info.port_speed) {
5793         case CARD_INFO_PORTS_10M:
5794                 ecmd->speed = SPEED_10;
5795                 break;
5796         case CARD_INFO_PORTS_100M:
5797                 ecmd->speed = SPEED_100;
5798                 break;
5799         case CARD_INFO_PORTS_1G:
5800                 ecmd->speed = SPEED_1000;
5801                 break;
5802         case CARD_INFO_PORTS_10G:
5803                 ecmd->speed = SPEED_10000;
5804                 break;
5805         }
5806 
5807         return 0;
5808 }
5809 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5810 
5811 static int __init qeth_core_init(void)
5812 {
5813         int rc;
5814 
5815         pr_info("loading core functions\n");
5816         INIT_LIST_HEAD(&qeth_core_card_list.list);
5817         INIT_LIST_HEAD(&qeth_dbf_list);
5818         rwlock_init(&qeth_core_card_list.rwlock);
5819         mutex_init(&qeth_mod_mutex);
5820 
5821         qeth_wq = create_singlethread_workqueue("qeth_wq");
5822 
5823         rc = qeth_register_dbf_views();
5824         if (rc)
5825                 goto out_err;
5826         qeth_core_root_dev = root_device_register("qeth");
5827         rc = PTR_RET(qeth_core_root_dev);
5828         if (rc)
5829                 goto register_err;
5830         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5831                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5832         if (!qeth_core_header_cache) {
5833                 rc = -ENOMEM;
5834                 goto slab_err;
5835         }
5836         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5837                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5838         if (!qeth_qdio_outbuf_cache) {
5839                 rc = -ENOMEM;
5840                 goto cqslab_err;
5841         }
5842         rc = ccw_driver_register(&qeth_ccw_driver);
5843         if (rc)
5844                 goto ccw_err;
5845         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5846         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5847         if (rc)
5848                 goto ccwgroup_err;
5849 
5850         return 0;
5851 
5852 ccwgroup_err:
5853         ccw_driver_unregister(&qeth_ccw_driver);
5854 ccw_err:
5855         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5856 cqslab_err:
5857         kmem_cache_destroy(qeth_core_header_cache);
5858 slab_err:
5859         root_device_unregister(qeth_core_root_dev);
5860 register_err:
5861         qeth_unregister_dbf_views();
5862 out_err:
5863         pr_err("Initializing the qeth device driver failed\n");
5864         return rc;
5865 }
5866 
5867 static void __exit qeth_core_exit(void)
5868 {
5869         qeth_clear_dbf_list();
5870         destroy_workqueue(qeth_wq);
5871         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5872         ccw_driver_unregister(&qeth_ccw_driver);
5873         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5874         kmem_cache_destroy(qeth_core_header_cache);
5875         root_device_unregister(qeth_core_root_dev);
5876         qeth_unregister_dbf_views();
5877         pr_info("core functions removed\n");
5878 }
5879 
5880 module_init(qeth_core_init);
5881 module_exit(qeth_core_exit);
5882 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5883 MODULE_DESCRIPTION("qeth core functions");
5884 MODULE_LICENSE("GPL");
5885 

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