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