drivers/s390/net/qeth_core_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/ip.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21 #include <linux/slab.h>
  22 #include <net/iucv/af_iucv.h>
  23 #include <net/dsfield.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/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 (!card || !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->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 channelPath_dsc {
1349                 u8 flags;
1350                 u8 lsn;
1351                 u8 desc;
1352                 u8 chpid;
1353                 u8 swla;
1354                 u8 zeroes;
1355                 u8 chla;
1356                 u8 chpp;
1357         } *chp_dsc;
1358
1359         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1360
1361         ccwdev = card->data.ccwdev;
1362         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1363         if (!chp_dsc)
1364                 goto out;
1365
1366         card->info.func_level = 0x4100 + chp_dsc->desc;
1367         if (card->info.type == QETH_CARD_TYPE_IQD)
1368                 goto out;
1369
1370         /* CHPP field bit 6 == 1 -> single queue */
1371         if ((chp_dsc->chpp & 0x02) == 0x02)
1372                 qeth_set_single_write_queues(card);
1373         else
1374                 qeth_set_multiple_write_queues(card);
1375 out:
1376         kfree(chp_dsc);
1377         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1378         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1379 }
1380
1381 static void qeth_init_qdio_info(struct qeth_card *card)
1382 {
1383         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1384         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1385         /* inbound */
1386         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1387         if (card->info.type == QETH_CARD_TYPE_IQD)
1388                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1389         else
1390                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1391         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1392         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1393         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1394 }
1395
1396 static void qeth_set_intial_options(struct qeth_card *card)
1397 {
1398         card->options.route4.type = NO_ROUTER;
1399         card->options.route6.type = NO_ROUTER;
1400         card->options.fake_broadcast = 0;
1401         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1402         card->options.performance_stats = 0;
1403         card->options.rx_sg_cb = QETH_RX_SG_CB;
1404         card->options.isolation = ISOLATION_MODE_NONE;
1405         card->options.cq = QETH_CQ_DISABLED;
1406 }
1407
1408 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1409 {
1410         unsigned long flags;
1411         int rc = 0;
1412
1413         spin_lock_irqsave(&card->thread_mask_lock, flags);
1414         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1415                         (u8) card->thread_start_mask,
1416                         (u8) card->thread_allowed_mask,
1417                         (u8) card->thread_running_mask);
1418         rc = (card->thread_start_mask & thread);
1419         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1420         return rc;
1421 }
1422
1423 static void qeth_start_kernel_thread(struct work_struct *work)
1424 {
1425         struct task_struct *ts;
1426         struct qeth_card *card = container_of(work, struct qeth_card,
1427                                         kernel_thread_starter);
1428         QETH_CARD_TEXT(card , 2, "strthrd");
1429
1430         if (card->read.state != CH_STATE_UP &&
1431             card->write.state != CH_STATE_UP)
1432                 return;
1433         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1434                 ts = kthread_run(card->discipline->recover, (void *)card,
1435                                 "qeth_recover");
1436                 if (IS_ERR(ts)) {
1437                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1438                         qeth_clear_thread_running_bit(card,
1439                                 QETH_RECOVER_THREAD);
1440                 }
1441         }
1442 }
1443
1444 static int qeth_setup_card(struct qeth_card *card)
1445 {
1446
1447         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1448         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1449
1450         card->read.state  = CH_STATE_DOWN;
1451         card->write.state = CH_STATE_DOWN;
1452         card->data.state  = CH_STATE_DOWN;
1453         card->state = CARD_STATE_DOWN;
1454         card->lan_online = 0;
1455         card->read_or_write_problem = 0;
1456         card->dev = NULL;
1457         spin_lock_init(&card->vlanlock);
1458         spin_lock_init(&card->mclock);
1459         spin_lock_init(&card->lock);
1460         spin_lock_init(&card->ip_lock);
1461         spin_lock_init(&card->thread_mask_lock);
1462         mutex_init(&card->conf_mutex);
1463         mutex_init(&card->discipline_mutex);
1464         card->thread_start_mask = 0;
1465         card->thread_allowed_mask = 0;
1466         card->thread_running_mask = 0;
1467         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1468         INIT_LIST_HEAD(&card->ip_list);
1469         INIT_LIST_HEAD(card->ip_tbd_list);
1470         INIT_LIST_HEAD(&card->cmd_waiter_list);
1471         init_waitqueue_head(&card->wait_q);
1472         /* initial options */
1473         qeth_set_intial_options(card);
1474         /* IP address takeover */
1475         INIT_LIST_HEAD(&card->ipato.entries);
1476         card->ipato.enabled = 0;
1477         card->ipato.invert4 = 0;
1478         card->ipato.invert6 = 0;
1479         /* init QDIO stuff */
1480         qeth_init_qdio_info(card);
1481         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1482         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1483         return 0;
1484 }
1485
1486 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1487 {
1488         struct qeth_card *card = container_of(slr, struct qeth_card,
1489                                         qeth_service_level);
1490         if (card->info.mcl_level[0])
1491                 seq_printf(m, "qeth: %s firmware level %s\n",
1492                         CARD_BUS_ID(card), card->info.mcl_level);
1493 }
1494
1495 static struct qeth_card *qeth_alloc_card(void)
1496 {
1497         struct qeth_card *card;
1498
1499         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1500         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1501         if (!card)
1502                 goto out;
1503         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1504         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1505         if (!card->ip_tbd_list) {
1506                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1507                 goto out_card;
1508         }
1509         if (qeth_setup_channel(&card->read))
1510                 goto out_ip;
1511         if (qeth_setup_channel(&card->write))
1512                 goto out_channel;
1513         card->options.layer2 = -1;
1514         card->qeth_service_level.seq_print = qeth_core_sl_print;
1515         register_service_level(&card->qeth_service_level);
1516         return card;
1517
1518 out_channel:
1519         qeth_clean_channel(&card->read);
1520 out_ip:
1521         kfree(card->ip_tbd_list);
1522 out_card:
1523         kfree(card);
1524 out:
1525         return NULL;
1526 }
1527
1528 static int qeth_determine_card_type(struct qeth_card *card)
1529 {
1530         int i = 0;
1531
1532         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1533
1534         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1535         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1536         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1537                 if ((CARD_RDEV(card)->id.dev_type ==
1538                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1539                     (CARD_RDEV(card)->id.dev_model ==
1540                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1541                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1542                         card->qdio.no_out_queues =
1543                                 known_devices[i][QETH_QUEUE_NO_IND];
1544                         card->qdio.no_in_queues = 1;
1545                         card->info.is_multicast_different =
1546                                 known_devices[i][QETH_MULTICAST_IND];
1547                         qeth_update_from_chp_desc(card);
1548                         return 0;
1549                 }
1550                 i++;
1551         }
1552         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1553         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1554                 "unknown type\n");
1555         return -ENOENT;
1556 }
1557
1558 static int qeth_clear_channel(struct qeth_channel *channel)
1559 {
1560         unsigned long flags;
1561         struct qeth_card *card;
1562         int rc;
1563
1564         card = CARD_FROM_CDEV(channel->ccwdev);
1565         QETH_CARD_TEXT(card, 3, "clearch");
1566         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1567         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1568         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1569
1570         if (rc)
1571                 return rc;
1572         rc = wait_event_interruptible_timeout(card->wait_q,
1573                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1574         if (rc == -ERESTARTSYS)
1575                 return rc;
1576         if (channel->state != CH_STATE_STOPPED)
1577                 return -ETIME;
1578         channel->state = CH_STATE_DOWN;
1579         return 0;
1580 }
1581
1582 static int qeth_halt_channel(struct qeth_channel *channel)
1583 {
1584         unsigned long flags;
1585         struct qeth_card *card;
1586         int rc;
1587
1588         card = CARD_FROM_CDEV(channel->ccwdev);
1589         QETH_CARD_TEXT(card, 3, "haltch");
1590         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1591         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1592         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1593
1594         if (rc)
1595                 return rc;
1596         rc = wait_event_interruptible_timeout(card->wait_q,
1597                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1598         if (rc == -ERESTARTSYS)
1599                 return rc;
1600         if (channel->state != CH_STATE_HALTED)
1601                 return -ETIME;
1602         return 0;
1603 }
1604
1605 static int qeth_halt_channels(struct qeth_card *card)
1606 {
1607         int rc1 = 0, rc2 = 0, rc3 = 0;
1608
1609         QETH_CARD_TEXT(card, 3, "haltchs");
1610         rc1 = qeth_halt_channel(&card->read);
1611         rc2 = qeth_halt_channel(&card->write);
1612         rc3 = qeth_halt_channel(&card->data);
1613         if (rc1)
1614                 return rc1;
1615         if (rc2)
1616                 return rc2;
1617         return rc3;
1618 }
1619
1620 static int qeth_clear_channels(struct qeth_card *card)
1621 {
1622         int rc1 = 0, rc2 = 0, rc3 = 0;
1623
1624         QETH_CARD_TEXT(card, 3, "clearchs");
1625         rc1 = qeth_clear_channel(&card->read);
1626         rc2 = qeth_clear_channel(&card->write);
1627         rc3 = qeth_clear_channel(&card->data);
1628         if (rc1)
1629                 return rc1;
1630         if (rc2)
1631                 return rc2;
1632         return rc3;
1633 }
1634
1635 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1636 {
1637         int rc = 0;
1638
1639         QETH_CARD_TEXT(card, 3, "clhacrd");
1640
1641         if (halt)
1642                 rc = qeth_halt_channels(card);
1643         if (rc)
1644                 return rc;
1645         return qeth_clear_channels(card);
1646 }
1647
1648 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1649 {
1650         int rc = 0;
1651
1652         QETH_CARD_TEXT(card, 3, "qdioclr");
1653         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1654                 QETH_QDIO_CLEANING)) {
1655         case QETH_QDIO_ESTABLISHED:
1656                 if (card->info.type == QETH_CARD_TYPE_IQD)
1657                         rc = qdio_shutdown(CARD_DDEV(card),
1658                                 QDIO_FLAG_CLEANUP_USING_HALT);
1659                 else
1660                         rc = qdio_shutdown(CARD_DDEV(card),
1661                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1662                 if (rc)
1663                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1664                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1665                 break;
1666         case QETH_QDIO_CLEANING:
1667                 return rc;
1668         default:
1669                 break;
1670         }
1671         rc = qeth_clear_halt_card(card, use_halt);
1672         if (rc)
1673                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1674         card->state = CARD_STATE_DOWN;
1675         return rc;
1676 }
1677 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1678
1679 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1680                                int *length)
1681 {
1682         struct ciw *ciw;
1683         char *rcd_buf;
1684         int ret;
1685         struct qeth_channel *channel = &card->data;
1686         unsigned long flags;
1687
1688         /*
1689          * scan for RCD command in extended SenseID data
1690          */
1691         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1692         if (!ciw || ciw->cmd == 0)
1693                 return -EOPNOTSUPP;
1694         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1695         if (!rcd_buf)
1696                 return -ENOMEM;
1697
1698         channel->ccw.cmd_code = ciw->cmd;
1699         channel->ccw.cda = (__u32) __pa(rcd_buf);
1700         channel->ccw.count = ciw->count;
1701         channel->ccw.flags = CCW_FLAG_SLI;
1702         channel->state = CH_STATE_RCD;
1703         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1704         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1705                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1706                                        QETH_RCD_TIMEOUT);
1707         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1708         if (!ret)
1709                 wait_event(card->wait_q,
1710                            (channel->state == CH_STATE_RCD_DONE ||
1711                             channel->state == CH_STATE_DOWN));
1712         if (channel->state == CH_STATE_DOWN)
1713                 ret = -EIO;
1714         else
1715                 channel->state = CH_STATE_DOWN;
1716         if (ret) {
1717                 kfree(rcd_buf);
1718                 *buffer = NULL;
1719                 *length = 0;
1720         } else {
1721                 *length = ciw->count;
1722                 *buffer = rcd_buf;
1723         }
1724         return ret;
1725 }
1726
1727 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1728 {
1729         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1730         card->info.chpid = prcd[30];
1731         card->info.unit_addr2 = prcd[31];
1732         card->info.cula = prcd[63];
1733         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1734                                (prcd[0x11] == _ascebc['M']));
1735 }
1736
1737 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1738 {
1739         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1740
1741         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1742             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1743                 card->info.blkt.time_total = 0;
1744                 card->info.blkt.inter_packet = 0;
1745                 card->info.blkt.inter_packet_jumbo = 0;
1746         } else {
1747                 card->info.blkt.time_total = 250;
1748                 card->info.blkt.inter_packet = 5;
1749                 card->info.blkt.inter_packet_jumbo = 15;
1750         }
1751 }
1752
1753 static void qeth_init_tokens(struct qeth_card *card)
1754 {
1755         card->token.issuer_rm_w = 0x00010103UL;
1756         card->token.cm_filter_w = 0x00010108UL;
1757         card->token.cm_connection_w = 0x0001010aUL;
1758         card->token.ulp_filter_w = 0x0001010bUL;
1759         card->token.ulp_connection_w = 0x0001010dUL;
1760 }
1761
1762 static void qeth_init_func_level(struct qeth_card *card)
1763 {
1764         switch (card->info.type) {
1765         case QETH_CARD_TYPE_IQD:
1766                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1767                 break;
1768         case QETH_CARD_TYPE_OSD:
1769         case QETH_CARD_TYPE_OSN:
1770                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1771                 break;
1772         default:
1773                 break;
1774         }
1775 }
1776
1777 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1778                 void (*idx_reply_cb)(struct qeth_channel *,
1779                         struct qeth_cmd_buffer *))
1780 {
1781         struct qeth_cmd_buffer *iob;
1782         unsigned long flags;
1783         int rc;
1784         struct qeth_card *card;
1785
1786         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1787         card = CARD_FROM_CDEV(channel->ccwdev);
1788         iob = qeth_get_buffer(channel);
1789         iob->callback = idx_reply_cb;
1790         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1791         channel->ccw.count = QETH_BUFSIZE;
1792         channel->ccw.cda = (__u32) __pa(iob->data);
1793
1794         wait_event(card->wait_q,
1795                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1796         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1797         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1798         rc = ccw_device_start(channel->ccwdev,
1799                               &channel->ccw, (addr_t) iob, 0, 0);
1800         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1801
1802         if (rc) {
1803                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1804                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1805                 atomic_set(&channel->irq_pending, 0);
1806                 wake_up(&card->wait_q);
1807                 return rc;
1808         }
1809         rc = wait_event_interruptible_timeout(card->wait_q,
1810                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1811         if (rc == -ERESTARTSYS)
1812                 return rc;
1813         if (channel->state != CH_STATE_UP) {
1814                 rc = -ETIME;
1815                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1816                 qeth_clear_cmd_buffers(channel);
1817         } else
1818                 rc = 0;
1819         return rc;
1820 }
1821
1822 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1823                 void (*idx_reply_cb)(struct qeth_channel *,
1824                         struct qeth_cmd_buffer *))
1825 {
1826         struct qeth_card *card;
1827         struct qeth_cmd_buffer *iob;
1828         unsigned long flags;
1829         __u16 temp;
1830         __u8 tmp;
1831         int rc;
1832         struct ccw_dev_id temp_devid;
1833
1834         card = CARD_FROM_CDEV(channel->ccwdev);
1835
1836         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1837
1838         iob = qeth_get_buffer(channel);
1839         iob->callback = idx_reply_cb;
1840         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1841         channel->ccw.count = IDX_ACTIVATE_SIZE;
1842         channel->ccw.cda = (__u32) __pa(iob->data);
1843         if (channel == &card->write) {
1844                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1845                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1846                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1847                 card->seqno.trans_hdr++;
1848         } else {
1849                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1850                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1851                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1852         }
1853         tmp = ((__u8)card->info.portno) | 0x80;
1854         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1855         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1856                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1857         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1858                &card->info.func_level, sizeof(__u16));
1859         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1860         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1861         temp = (card->info.cula << 8) + card->info.unit_addr2;
1862         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1863
1864         wait_event(card->wait_q,
1865                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1866         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1867         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1868         rc = ccw_device_start(channel->ccwdev,
1869                               &channel->ccw, (addr_t) iob, 0, 0);
1870         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1871
1872         if (rc) {
1873                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1874                         rc);
1875                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1876                 atomic_set(&channel->irq_pending, 0);
1877                 wake_up(&card->wait_q);
1878                 return rc;
1879         }
1880         rc = wait_event_interruptible_timeout(card->wait_q,
1881                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1882         if (rc == -ERESTARTSYS)
1883                 return rc;
1884         if (channel->state != CH_STATE_ACTIVATING) {
1885                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1886                         " failed to recover an error on the device\n");
1887                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1888                         dev_name(&channel->ccwdev->dev));
1889                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1890                 qeth_clear_cmd_buffers(channel);
1891                 return -ETIME;
1892         }
1893         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1894 }
1895
1896 static int qeth_peer_func_level(int level)
1897 {
1898         if ((level & 0xff) == 8)
1899                 return (level & 0xff) + 0x400;
1900         if (((level >> 8) & 3) == 1)
1901                 return (level & 0xff) + 0x200;
1902         return level;
1903 }
1904
1905 static void qeth_idx_write_cb(struct qeth_channel *channel,
1906                 struct qeth_cmd_buffer *iob)
1907 {
1908         struct qeth_card *card;
1909         __u16 temp;
1910
1911         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1912
1913         if (channel->state == CH_STATE_DOWN) {
1914                 channel->state = CH_STATE_ACTIVATING;
1915                 goto out;
1916         }
1917         card = CARD_FROM_CDEV(channel->ccwdev);
1918
1919         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1920                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1921                         dev_err(&card->write.ccwdev->dev,
1922                                 "The adapter is used exclusively by another "
1923                                 "host\n");
1924                 else
1925                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1926                                 " negative reply\n",
1927                                 dev_name(&card->write.ccwdev->dev));
1928                 goto out;
1929         }
1930         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1931         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1932                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1933                         "function level mismatch (sent: 0x%x, received: "
1934                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1935                         card->info.func_level, temp);
1936                 goto out;
1937         }
1938         channel->state = CH_STATE_UP;
1939 out:
1940         qeth_release_buffer(channel, iob);
1941 }
1942
1943 static void qeth_idx_read_cb(struct qeth_channel *channel,
1944                 struct qeth_cmd_buffer *iob)
1945 {
1946         struct qeth_card *card;
1947         __u16 temp;
1948
1949         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1950         if (channel->state == CH_STATE_DOWN) {
1951                 channel->state = CH_STATE_ACTIVATING;
1952                 goto out;
1953         }
1954
1955         card = CARD_FROM_CDEV(channel->ccwdev);
1956         if (qeth_check_idx_response(card, iob->data))
1957                         goto out;
1958
1959         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1960                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1961                 case QETH_IDX_ACT_ERR_EXCL:
1962                         dev_err(&card->write.ccwdev->dev,
1963                                 "The adapter is used exclusively by another "
1964                                 "host\n");
1965                         break;
1966                 case QETH_IDX_ACT_ERR_AUTH:
1967                 case QETH_IDX_ACT_ERR_AUTH_USER:
1968                         dev_err(&card->read.ccwdev->dev,
1969                                 "Setting the device online failed because of "
1970                                 "insufficient authorization\n");
1971                         break;
1972                 default:
1973                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1974                                 " negative reply\n",
1975                                 dev_name(&card->read.ccwdev->dev));
1976                 }
1977                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1978                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1979                 goto out;
1980         }
1981
1982 /**
1983  *  * temporary fix for microcode bug
1984  *   * to revert it,replace OR by AND
1985  *    */
1986         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1987              (card->info.type == QETH_CARD_TYPE_OSD))
1988                 card->info.portname_required = 1;
1989
1990         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1991         if (temp != qeth_peer_func_level(card->info.func_level)) {
1992                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1993                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1994                         dev_name(&card->read.ccwdev->dev),
1995                         card->info.func_level, temp);
1996                 goto out;
1997         }
1998         memcpy(&card->token.issuer_rm_r,
1999                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2000                QETH_MPC_TOKEN_LENGTH);
2001         memcpy(&card->info.mcl_level[0],
2002                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2003         channel->state = CH_STATE_UP;
2004 out:
2005         qeth_release_buffer(channel, iob);
2006 }
2007
2008 void qeth_prepare_control_data(struct qeth_card *card, int len,
2009                 struct qeth_cmd_buffer *iob)
2010 {
2011         qeth_setup_ccw(&card->write, iob->data, len);
2012         iob->callback = qeth_release_buffer;
2013
2014         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2015                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2016         card->seqno.trans_hdr++;
2017         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2018                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2019         card->seqno.pdu_hdr++;
2020         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2021                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2022         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2023 }
2024 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2025
2026 int qeth_send_control_data(struct qeth_card *card, int len,
2027                 struct qeth_cmd_buffer *iob,
2028                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2029                         unsigned long),
2030                 void *reply_param)
2031 {
2032         int rc;
2033         unsigned long flags;
2034         struct qeth_reply *reply = NULL;
2035         unsigned long timeout, event_timeout;
2036         struct qeth_ipa_cmd *cmd;
2037
2038         QETH_CARD_TEXT(card, 2, "sendctl");
2039
2040         if (card->read_or_write_problem) {
2041                 qeth_release_buffer(iob->channel, iob);
2042                 return -EIO;
2043         }
2044         reply = qeth_alloc_reply(card);
2045         if (!reply) {
2046                 return -ENOMEM;
2047         }
2048         reply->callback = reply_cb;
2049         reply->param = reply_param;
2050         if (card->state == CARD_STATE_DOWN)
2051                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2052         else
2053                 reply->seqno = card->seqno.ipa++;
2054         init_waitqueue_head(&reply->wait_q);
2055         spin_lock_irqsave(&card->lock, flags);
2056         list_add_tail(&reply->list, &card->cmd_waiter_list);
2057         spin_unlock_irqrestore(&card->lock, flags);
2058         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2059
2060         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2061         qeth_prepare_control_data(card, len, iob);
2062
2063         if (IS_IPA(iob->data))
2064                 event_timeout = QETH_IPA_TIMEOUT;
2065         else
2066                 event_timeout = QETH_TIMEOUT;
2067         timeout = jiffies + event_timeout;
2068
2069         QETH_CARD_TEXT(card, 6, "noirqpnd");
2070         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2071         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2072                               (addr_t) iob, 0, 0);
2073         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2074         if (rc) {
2075                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2076                         "ccw_device_start rc = %i\n",
2077                         dev_name(&card->write.ccwdev->dev), rc);
2078                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2079                 spin_lock_irqsave(&card->lock, flags);
2080                 list_del_init(&reply->list);
2081                 qeth_put_reply(reply);
2082                 spin_unlock_irqrestore(&card->lock, flags);
2083                 qeth_release_buffer(iob->channel, iob);
2084                 atomic_set(&card->write.irq_pending, 0);
2085                 wake_up(&card->wait_q);
2086                 return rc;
2087         }
2088
2089         /* we have only one long running ipassist, since we can ensure
2090            process context of this command we can sleep */
2091         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2092         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2093             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2094                 if (!wait_event_timeout(reply->wait_q,
2095                     atomic_read(&reply->received), event_timeout))
2096                         goto time_err;
2097         } else {
2098                 while (!atomic_read(&reply->received)) {
2099                         if (time_after(jiffies, timeout))
2100                                 goto time_err;
2101                         cpu_relax();
2102                 }
2103         }
2104
2105         if (reply->rc == -EIO)
2106                 goto error;
2107         rc = reply->rc;
2108         qeth_put_reply(reply);
2109         return rc;
2110
2111 time_err:
2112         reply->rc = -ETIME;
2113         spin_lock_irqsave(&reply->card->lock, flags);
2114         list_del_init(&reply->list);
2115         spin_unlock_irqrestore(&reply->card->lock, flags);
2116         atomic_inc(&reply->received);
2117 error:
2118         atomic_set(&card->write.irq_pending, 0);
2119         qeth_release_buffer(iob->channel, iob);
2120         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2121         rc = reply->rc;
2122         qeth_put_reply(reply);
2123         return rc;
2124 }
2125 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2126
2127 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2128                 unsigned long data)
2129 {
2130         struct qeth_cmd_buffer *iob;
2131
2132         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2133
2134         iob = (struct qeth_cmd_buffer *) data;
2135         memcpy(&card->token.cm_filter_r,
2136                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2137                QETH_MPC_TOKEN_LENGTH);
2138         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2139         return 0;
2140 }
2141
2142 static int qeth_cm_enable(struct qeth_card *card)
2143 {
2144         int rc;
2145         struct qeth_cmd_buffer *iob;
2146
2147         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2148
2149         iob = qeth_wait_for_buffer(&card->write);
2150         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2151         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2152                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2153         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2154                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2155
2156         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2157                                     qeth_cm_enable_cb, NULL);
2158         return rc;
2159 }
2160
2161 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2162                 unsigned long data)
2163 {
2164
2165         struct qeth_cmd_buffer *iob;
2166
2167         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2168
2169         iob = (struct qeth_cmd_buffer *) data;
2170         memcpy(&card->token.cm_connection_r,
2171                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2172                QETH_MPC_TOKEN_LENGTH);
2173         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2174         return 0;
2175 }
2176
2177 static int qeth_cm_setup(struct qeth_card *card)
2178 {
2179         int rc;
2180         struct qeth_cmd_buffer *iob;
2181
2182         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2183
2184         iob = qeth_wait_for_buffer(&card->write);
2185         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2186         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2187                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2188         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2189                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2190         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2191                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2192         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2193                                     qeth_cm_setup_cb, NULL);
2194         return rc;
2195
2196 }
2197
2198 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2199 {
2200         switch (card->info.type) {
2201         case QETH_CARD_TYPE_UNKNOWN:
2202                 return 1500;
2203         case QETH_CARD_TYPE_IQD:
2204                 return card->info.max_mtu;
2205         case QETH_CARD_TYPE_OSD:
2206                 switch (card->info.link_type) {
2207                 case QETH_LINK_TYPE_HSTR:
2208                 case QETH_LINK_TYPE_LANE_TR:
2209                         return 2000;
2210                 default:
2211                         return card->options.layer2 ? 1500 : 1492;
2212                 }
2213         case QETH_CARD_TYPE_OSM:
2214         case QETH_CARD_TYPE_OSX:
2215                 return card->options.layer2 ? 1500 : 1492;
2216         default:
2217                 return 1500;
2218         }
2219 }
2220
2221 static inline int qeth_get_mtu_outof_framesize(int framesize)
2222 {
2223         switch (framesize) {
2224         case 0x4000:
2225                 return 8192;
2226         case 0x6000:
2227                 return 16384;
2228         case 0xa000:
2229                 return 32768;
2230         case 0xffff:
2231                 return 57344;
2232         default:
2233                 return 0;
2234         }
2235 }
2236
2237 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2238 {
2239         switch (card->info.type) {
2240         case QETH_CARD_TYPE_OSD:
2241         case QETH_CARD_TYPE_OSM:
2242         case QETH_CARD_TYPE_OSX:
2243         case QETH_CARD_TYPE_IQD:
2244                 return ((mtu >= 576) &&
2245                         (mtu <= card->info.max_mtu));
2246         case QETH_CARD_TYPE_OSN:
2247         case QETH_CARD_TYPE_UNKNOWN:
2248         default:
2249                 return 1;
2250         }
2251 }
2252
2253 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2254                 unsigned long data)
2255 {
2256
2257         __u16 mtu, framesize;
2258         __u16 len;
2259         __u8 link_type;
2260         struct qeth_cmd_buffer *iob;
2261
2262         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2263
2264         iob = (struct qeth_cmd_buffer *) data;
2265         memcpy(&card->token.ulp_filter_r,
2266                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2267                QETH_MPC_TOKEN_LENGTH);
2268         if (card->info.type == QETH_CARD_TYPE_IQD) {
2269                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2270                 mtu = qeth_get_mtu_outof_framesize(framesize);
2271                 if (!mtu) {
2272                         iob->rc = -EINVAL;
2273                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2274                         return 0;
2275                 }
2276                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2277                         /* frame size has changed */
2278                         if (card->dev &&
2279                             ((card->dev->mtu == card->info.initial_mtu) ||
2280                              (card->dev->mtu > mtu)))
2281                                 card->dev->mtu = mtu;
2282                         qeth_free_qdio_buffers(card);
2283                 }
2284                 card->info.initial_mtu = mtu;
2285                 card->info.max_mtu = mtu;
2286                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2287         } else {
2288                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2289                         iob->data);
2290                 card->info.initial_mtu = min(card->info.max_mtu,
2291                                         qeth_get_initial_mtu_for_card(card));
2292                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2293         }
2294
2295         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2296         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2297                 memcpy(&link_type,
2298                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2299                 card->info.link_type = link_type;
2300         } else
2301                 card->info.link_type = 0;
2302         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2303         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2304         return 0;
2305 }
2306
2307 static int qeth_ulp_enable(struct qeth_card *card)
2308 {
2309         int rc;
2310         char prot_type;
2311         struct qeth_cmd_buffer *iob;
2312
2313         /*FIXME: trace view callbacks*/
2314         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2315
2316         iob = qeth_wait_for_buffer(&card->write);
2317         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2318
2319         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2320                 (__u8) card->info.portno;
2321         if (card->options.layer2)
2322                 if (card->info.type == QETH_CARD_TYPE_OSN)
2323                         prot_type = QETH_PROT_OSN2;
2324                 else
2325                         prot_type = QETH_PROT_LAYER2;
2326         else
2327                 prot_type = QETH_PROT_TCPIP;
2328
2329         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2330         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2331                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2332         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2333                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2334         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2335                card->info.portname, 9);
2336         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2337                                     qeth_ulp_enable_cb, NULL);
2338         return rc;
2339
2340 }
2341
2342 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2343                 unsigned long data)
2344 {
2345         struct qeth_cmd_buffer *iob;
2346
2347         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2348
2349         iob = (struct qeth_cmd_buffer *) data;
2350         memcpy(&card->token.ulp_connection_r,
2351                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2352                QETH_MPC_TOKEN_LENGTH);
2353         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2354                      3)) {
2355                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2356                 dev_err(&card->gdev->dev, "A connection could not be "
2357                         "established because of an OLM limit\n");
2358                 iob->rc = -EMLINK;
2359         }
2360         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2361         return 0;
2362 }
2363
2364 static int qeth_ulp_setup(struct qeth_card *card)
2365 {
2366         int rc;
2367         __u16 temp;
2368         struct qeth_cmd_buffer *iob;
2369         struct ccw_dev_id dev_id;
2370
2371         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2372
2373         iob = qeth_wait_for_buffer(&card->write);
2374         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2375
2376         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2377                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2378         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2379                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2380         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2381                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2382
2383         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2384         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2385         temp = (card->info.cula << 8) + card->info.unit_addr2;
2386         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2387         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2388                                     qeth_ulp_setup_cb, NULL);
2389         return rc;
2390 }
2391
2392 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2393 {
2394         int rc;
2395         struct qeth_qdio_out_buffer *newbuf;
2396
2397         rc = 0;
2398         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2399         if (!newbuf) {
2400                 rc = -ENOMEM;
2401                 goto out;
2402         }
2403         newbuf->buffer = &q->qdio_bufs[bidx];
2404         skb_queue_head_init(&newbuf->skb_list);
2405         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2406         newbuf->q = q;
2407         newbuf->aob = NULL;
2408         newbuf->next_pending = q->bufs[bidx];
2409         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2410         q->bufs[bidx] = newbuf;
2411         if (q->bufstates) {
2412                 q->bufstates[bidx].user = newbuf;
2413                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2414                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2415                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2416                                 (long) newbuf->next_pending);
2417         }
2418 out:
2419         return rc;
2420 }
2421
2422
2423 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2424 {
2425         int i, j;
2426
2427         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2428
2429         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2430                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2431                 return 0;
2432
2433         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2434                                    GFP_KERNEL);
2435         if (!card->qdio.in_q)
2436                 goto out_nomem;
2437         QETH_DBF_TEXT(SETUP, 2, "inq");
2438         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2439         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2440         /* give inbound qeth_qdio_buffers their qdio_buffers */
2441         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2442                 card->qdio.in_q->bufs[i].buffer =
2443                         &card->qdio.in_q->qdio_bufs[i];
2444                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2445         }
2446         /* inbound buffer pool */
2447         if (qeth_alloc_buffer_pool(card))
2448                 goto out_freeinq;
2449
2450         /* outbound */
2451         card->qdio.out_qs =
2452                 kzalloc(card->qdio.no_out_queues *
2453                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2454         if (!card->qdio.out_qs)
2455                 goto out_freepool;
2456         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2457                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2458                                                GFP_KERNEL);
2459                 if (!card->qdio.out_qs[i])
2460                         goto out_freeoutq;
2461                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2462                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2463                 card->qdio.out_qs[i]->queue_no = i;
2464                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2465                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2466                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2467                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2468                                 goto out_freeoutqbufs;
2469                 }
2470         }
2471
2472         /* completion */
2473         if (qeth_alloc_cq(card))
2474                 goto out_freeoutq;
2475
2476         return 0;
2477
2478 out_freeoutqbufs:
2479         while (j > 0) {
2480                 --j;
2481                 kmem_cache_free(qeth_qdio_outbuf_cache,
2482                                 card->qdio.out_qs[i]->bufs[j]);
2483                 card->qdio.out_qs[i]->bufs[j] = NULL;
2484         }
2485 out_freeoutq:
2486         while (i > 0) {
2487                 kfree(card->qdio.out_qs[--i]);
2488                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2489         }
2490         kfree(card->qdio.out_qs);
2491         card->qdio.out_qs = NULL;
2492 out_freepool:
2493         qeth_free_buffer_pool(card);
2494 out_freeinq:
2495         kfree(card->qdio.in_q);
2496         card->qdio.in_q = NULL;
2497 out_nomem:
2498         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2499         return -ENOMEM;
2500 }
2501
2502 static void qeth_create_qib_param_field(struct qeth_card *card,
2503                 char *param_field)
2504 {
2505
2506         param_field[0] = _ascebc['P'];
2507         param_field[1] = _ascebc['C'];
2508         param_field[2] = _ascebc['I'];
2509         param_field[3] = _ascebc['T'];
2510         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2511         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2512         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2513 }
2514
2515 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2516                 char *param_field)
2517 {
2518         param_field[16] = _ascebc['B'];
2519         param_field[17] = _ascebc['L'];
2520         param_field[18] = _ascebc['K'];
2521         param_field[19] = _ascebc['T'];
2522         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2523         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2524         *((unsigned int *) (&param_field[28])) =
2525                 card->info.blkt.inter_packet_jumbo;
2526 }
2527
2528 static int qeth_qdio_activate(struct qeth_card *card)
2529 {
2530         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2531         return qdio_activate(CARD_DDEV(card));
2532 }
2533
2534 static int qeth_dm_act(struct qeth_card *card)
2535 {
2536         int rc;
2537         struct qeth_cmd_buffer *iob;
2538
2539         QETH_DBF_TEXT(SETUP, 2, "dmact");
2540
2541         iob = qeth_wait_for_buffer(&card->write);
2542         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2543
2544         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2545                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2546         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2547                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2548         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2549         return rc;
2550 }
2551
2552 static int qeth_mpc_initialize(struct qeth_card *card)
2553 {
2554         int rc;
2555
2556         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2557
2558         rc = qeth_issue_next_read(card);
2559         if (rc) {
2560                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2561                 return rc;
2562         }
2563         rc = qeth_cm_enable(card);
2564         if (rc) {
2565                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2566                 goto out_qdio;
2567         }
2568         rc = qeth_cm_setup(card);
2569         if (rc) {
2570                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2571                 goto out_qdio;
2572         }
2573         rc = qeth_ulp_enable(card);
2574         if (rc) {
2575                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2576                 goto out_qdio;
2577         }
2578         rc = qeth_ulp_setup(card);
2579         if (rc) {
2580                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2581                 goto out_qdio;
2582         }
2583         rc = qeth_alloc_qdio_buffers(card);
2584         if (rc) {
2585                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2586                 goto out_qdio;
2587         }
2588         rc = qeth_qdio_establish(card);
2589         if (rc) {
2590                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2591                 qeth_free_qdio_buffers(card);
2592                 goto out_qdio;
2593         }
2594         rc = qeth_qdio_activate(card);
2595         if (rc) {
2596                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2597                 goto out_qdio;
2598         }
2599         rc = qeth_dm_act(card);
2600         if (rc) {
2601                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2602                 goto out_qdio;
2603         }
2604
2605         return 0;
2606 out_qdio:
2607         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2608         qdio_free(CARD_DDEV(card));
2609         return rc;
2610 }
2611
2612 static void qeth_print_status_with_portname(struct qeth_card *card)
2613 {
2614         char dbf_text[15];
2615         int i;
2616
2617         sprintf(dbf_text, "%s", card->info.portname + 1);
2618         for (i = 0; i < 8; i++)
2619                 dbf_text[i] =
2620                         (char) _ebcasc[(__u8) dbf_text[i]];
2621         dbf_text[8] = 0;
2622         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2623                "with link type %s (portname: %s)\n",
2624                qeth_get_cardname(card),
2625                (card->info.mcl_level[0]) ? " (level: " : "",
2626                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2627                (card->info.mcl_level[0]) ? ")" : "",
2628                qeth_get_cardname_short(card),
2629                dbf_text);
2630
2631 }
2632
2633 static void qeth_print_status_no_portname(struct qeth_card *card)
2634 {
2635         if (card->info.portname[0])
2636                 dev_info(&card->gdev->dev, "Device is a%s "
2637                        "card%s%s%s\nwith link type %s "
2638                        "(no portname needed by interface).\n",
2639                        qeth_get_cardname(card),
2640                        (card->info.mcl_level[0]) ? " (level: " : "",
2641                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2642                        (card->info.mcl_level[0]) ? ")" : "",
2643                        qeth_get_cardname_short(card));
2644         else
2645                 dev_info(&card->gdev->dev, "Device is a%s "
2646                        "card%s%s%s\nwith link type %s.\n",
2647                        qeth_get_cardname(card),
2648                        (card->info.mcl_level[0]) ? " (level: " : "",
2649                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2650                        (card->info.mcl_level[0]) ? ")" : "",
2651                        qeth_get_cardname_short(card));
2652 }
2653
2654 void qeth_print_status_message(struct qeth_card *card)
2655 {
2656         switch (card->info.type) {
2657         case QETH_CARD_TYPE_OSD:
2658         case QETH_CARD_TYPE_OSM:
2659         case QETH_CARD_TYPE_OSX:
2660                 /* VM will use a non-zero first character
2661                  * to indicate a HiperSockets like reporting
2662                  * of the level OSA sets the first character to zero
2663                  * */
2664                 if (!card->info.mcl_level[0]) {
2665                         sprintf(card->info.mcl_level, "%02x%02x",
2666                                 card->info.mcl_level[2],
2667                                 card->info.mcl_level[3]);
2668
2669                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2670                         break;
2671                 }
2672                 /* fallthrough */
2673         case QETH_CARD_TYPE_IQD:
2674                 if ((card->info.guestlan) ||
2675                     (card->info.mcl_level[0] & 0x80)) {
2676                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2677                                 card->info.mcl_level[0]];
2678                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2679                                 card->info.mcl_level[1]];
2680                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2681                                 card->info.mcl_level[2]];
2682                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2683                                 card->info.mcl_level[3]];
2684                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2685                 }
2686                 break;
2687         default:
2688                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2689         }
2690         if (card->info.portname_required)
2691                 qeth_print_status_with_portname(card);
2692         else
2693                 qeth_print_status_no_portname(card);
2694 }
2695 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2696
2697 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2698 {
2699         struct qeth_buffer_pool_entry *entry;
2700
2701         QETH_CARD_TEXT(card, 5, "inwrklst");
2702
2703         list_for_each_entry(entry,
2704                             &card->qdio.init_pool.entry_list, init_list) {
2705                 qeth_put_buffer_pool_entry(card, entry);
2706         }
2707 }
2708
2709 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2710                 struct qeth_card *card)
2711 {
2712         struct list_head *plh;
2713         struct qeth_buffer_pool_entry *entry;
2714         int i, free;
2715         struct page *page;
2716
2717         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2718                 return NULL;
2719
2720         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2721                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2722                 free = 1;
2723                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2724                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2725                                 free = 0;
2726                                 break;
2727                         }
2728                 }
2729                 if (free) {
2730                         list_del_init(&entry->list);
2731                         return entry;
2732                 }
2733         }
2734
2735         /* no free buffer in pool so take first one and swap pages */
2736         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2737                         struct qeth_buffer_pool_entry, list);
2738         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2739                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2740                         page = alloc_page(GFP_ATOMIC);
2741                         if (!page) {
2742                                 return NULL;
2743                         } else {
2744                                 free_page((unsigned long)entry->elements[i]);
2745                                 entry->elements[i] = page_address(page);
2746                                 if (card->options.performance_stats)
2747                                         card->perf_stats.sg_alloc_page_rx++;
2748                         }
2749                 }
2750         }
2751         list_del_init(&entry->list);
2752         return entry;
2753 }
2754
2755 static int qeth_init_input_buffer(struct qeth_card *card,
2756                 struct qeth_qdio_buffer *buf)
2757 {
2758         struct qeth_buffer_pool_entry *pool_entry;
2759         int i;
2760
2761         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2762                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2763                 if (!buf->rx_skb)
2764                         return 1;
2765         }
2766
2767         pool_entry = qeth_find_free_buffer_pool_entry(card);
2768         if (!pool_entry)
2769                 return 1;
2770
2771         /*
2772          * since the buffer is accessed only from the input_tasklet
2773          * there shouldn't be a need to synchronize; also, since we use
2774          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2775          * buffers
2776          */
2777
2778         buf->pool_entry = pool_entry;
2779         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2780                 buf->buffer->element[i].length = PAGE_SIZE;
2781                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2782                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2783                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2784                 else
2785                         buf->buffer->element[i].eflags = 0;
2786                 buf->buffer->element[i].sflags = 0;
2787         }
2788         return 0;
2789 }
2790
2791 int qeth_init_qdio_queues(struct qeth_card *card)
2792 {
2793         int i, j;
2794         int rc;
2795
2796         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2797
2798         /* inbound queue */
2799         memset(card->qdio.in_q->qdio_bufs, 0,
2800                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2801         qeth_initialize_working_pool_list(card);
2802         /*give only as many buffers to hardware as we have buffer pool entries*/
2803         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2804                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2805         card->qdio.in_q->next_buf_to_init =
2806                 card->qdio.in_buf_pool.buf_count - 1;
2807         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2808                      card->qdio.in_buf_pool.buf_count - 1);
2809         if (rc) {
2810                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2811                 return rc;
2812         }
2813
2814         /* completion */
2815         rc = qeth_cq_init(card);
2816         if (rc) {
2817                 return rc;
2818         }
2819
2820         /* outbound queue */
2821         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2822                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2823                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2824                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2825                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2826                                         card->qdio.out_qs[i]->bufs[j],
2827                                         QETH_QDIO_BUF_EMPTY);
2828                 }
2829                 card->qdio.out_qs[i]->card = card;
2830                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2831                 card->qdio.out_qs[i]->do_pack = 0;
2832                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2833                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2834                 atomic_set(&card->qdio.out_qs[i]->state,
2835                            QETH_OUT_Q_UNLOCKED);
2836         }
2837         return 0;
2838 }
2839 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2840
2841 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2842 {
2843         switch (link_type) {
2844         case QETH_LINK_TYPE_HSTR:
2845                 return 2;
2846         default:
2847                 return 1;
2848         }
2849 }
2850
2851 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2852                 struct qeth_ipa_cmd *cmd, __u8 command,
2853                 enum qeth_prot_versions prot)
2854 {
2855         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2856         cmd->hdr.command = command;
2857         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2858         cmd->hdr.seqno = card->seqno.ipa;
2859         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2860         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2861         if (card->options.layer2)
2862                 cmd->hdr.prim_version_no = 2;
2863         else
2864                 cmd->hdr.prim_version_no = 1;
2865         cmd->hdr.param_count = 1;
2866         cmd->hdr.prot_version = prot;
2867         cmd->hdr.ipa_supported = 0;
2868         cmd->hdr.ipa_enabled = 0;
2869 }
2870
2871 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2872                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2873 {
2874         struct qeth_cmd_buffer *iob;
2875         struct qeth_ipa_cmd *cmd;
2876
2877         iob = qeth_wait_for_buffer(&card->write);
2878         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2879         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2880
2881         return iob;
2882 }
2883 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2884
2885 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2886                 char prot_type)
2887 {
2888         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2889         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2890         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2891                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2892 }
2893 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2894
2895 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2896                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2897                         unsigned long),
2898                 void *reply_param)
2899 {
2900         int rc;
2901         char prot_type;
2902
2903         QETH_CARD_TEXT(card, 4, "sendipa");
2904
2905         if (card->options.layer2)
2906                 if (card->info.type == QETH_CARD_TYPE_OSN)
2907                         prot_type = QETH_PROT_OSN2;
2908                 else
2909                         prot_type = QETH_PROT_LAYER2;
2910         else
2911                 prot_type = QETH_PROT_TCPIP;
2912         qeth_prepare_ipa_cmd(card, iob, prot_type);
2913         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2914                                                 iob, reply_cb, reply_param);
2915         if (rc == -ETIME) {
2916                 qeth_clear_ipacmd_list(card);
2917                 qeth_schedule_recovery(card);
2918         }
2919         return rc;
2920 }
2921 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2922
2923 int qeth_send_startlan(struct qeth_card *card)
2924 {
2925         int rc;
2926         struct qeth_cmd_buffer *iob;
2927
2928         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2929
2930         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2931         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2932         return rc;
2933 }
2934 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2935
2936 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2937                 struct qeth_reply *reply, unsigned long data)
2938 {
2939         struct qeth_ipa_cmd *cmd;
2940
2941         QETH_CARD_TEXT(card, 4, "defadpcb");
2942
2943         cmd = (struct qeth_ipa_cmd *) data;
2944         if (cmd->hdr.return_code == 0)
2945                 cmd->hdr.return_code =
2946                         cmd->data.setadapterparms.hdr.return_code;
2947         return 0;
2948 }
2949
2950 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2951                 struct qeth_reply *reply, unsigned long data)
2952 {
2953         struct qeth_ipa_cmd *cmd;
2954
2955         QETH_CARD_TEXT(card, 3, "quyadpcb");
2956
2957         cmd = (struct qeth_ipa_cmd *) data;
2958         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2959                 card->info.link_type =
2960                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2961                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2962         }
2963         card->options.adp.supported_funcs =
2964                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2965         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2966 }
2967
2968 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2969                 __u32 command, __u32 cmdlen)
2970 {
2971         struct qeth_cmd_buffer *iob;
2972         struct qeth_ipa_cmd *cmd;
2973
2974         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2975                                      QETH_PROT_IPV4);
2976         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2977         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2978         cmd->data.setadapterparms.hdr.command_code = command;
2979         cmd->data.setadapterparms.hdr.used_total = 1;
2980         cmd->data.setadapterparms.hdr.seq_no = 1;
2981
2982         return iob;
2983 }
2984
2985 int qeth_query_setadapterparms(struct qeth_card *card)
2986 {
2987         int rc;
2988         struct qeth_cmd_buffer *iob;
2989
2990         QETH_CARD_TEXT(card, 3, "queryadp");
2991         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2992                                    sizeof(struct qeth_ipacmd_setadpparms));
2993         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2994         return rc;
2995 }
2996 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2997
2998 static int qeth_query_ipassists_cb(struct qeth_card *card,
2999                 struct qeth_reply *reply, unsigned long data)
3000 {
3001         struct qeth_ipa_cmd *cmd;
3002
3003         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3004
3005         cmd = (struct qeth_ipa_cmd *) data;
3006
3007         switch (cmd->hdr.return_code) {
3008         case IPA_RC_NOTSUPP:
3009         case IPA_RC_L2_UNSUPPORTED_CMD:
3010                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3011                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3012                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3013                 return -0;
3014         default:
3015                 if (cmd->hdr.return_code) {
3016                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3017                                                 "rc=%d\n",
3018                                                 dev_name(&card->gdev->dev),
3019                                                 cmd->hdr.return_code);
3020                         return 0;
3021                 }
3022         }
3023
3024         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3025                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3026                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3027         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3028                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3029                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3030         } else
3031                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3032                                         "\n", dev_name(&card->gdev->dev));
3033         return 0;
3034 }
3035
3036 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3037 {
3038         int rc;
3039         struct qeth_cmd_buffer *iob;
3040
3041         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3042         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3043         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3044         return rc;
3045 }
3046 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3047
3048 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3049                 struct qeth_reply *reply, unsigned long data)
3050 {
3051         struct qeth_ipa_cmd *cmd;
3052         __u16 rc;
3053
3054         cmd = (struct qeth_ipa_cmd *)data;
3055         rc = cmd->hdr.return_code;
3056         if (rc)
3057                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3058         else
3059                 card->info.diagass_support = cmd->data.diagass.ext;
3060         return 0;
3061 }
3062
3063 static int qeth_query_setdiagass(struct qeth_card *card)
3064 {
3065         struct qeth_cmd_buffer *iob;
3066         struct qeth_ipa_cmd    *cmd;
3067
3068         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3069         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3070         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3071         cmd->data.diagass.subcmd_len = 16;
3072         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3073         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3074 }
3075
3076 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3077 {
3078         unsigned long info = get_zeroed_page(GFP_KERNEL);
3079         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3080         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3081         struct ccw_dev_id ccwid;
3082         int level;
3083
3084         tid->chpid = card->info.chpid;
3085         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3086         tid->ssid = ccwid.ssid;
3087         tid->devno = ccwid.devno;
3088         if (!info)
3089                 return;
3090         level = stsi(NULL, 0, 0, 0);
3091         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3092                 tid->lparnr = info222->lpar_number;
3093         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3094                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3095                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3096         }
3097         free_page(info);
3098         return;
3099 }
3100
3101 static int qeth_hw_trap_cb(struct qeth_card *card,
3102                 struct qeth_reply *reply, unsigned long data)
3103 {
3104         struct qeth_ipa_cmd *cmd;
3105         __u16 rc;
3106
3107         cmd = (struct qeth_ipa_cmd *)data;
3108         rc = cmd->hdr.return_code;
3109         if (rc)
3110                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3111         return 0;
3112 }
3113
3114 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3115 {
3116         struct qeth_cmd_buffer *iob;
3117         struct qeth_ipa_cmd *cmd;
3118
3119         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3120         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3121         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3122         cmd->data.diagass.subcmd_len = 80;
3123         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3124         cmd->data.diagass.type = 1;
3125         cmd->data.diagass.action = action;
3126         switch (action) {
3127         case QETH_DIAGS_TRAP_ARM:
3128                 cmd->data.diagass.options = 0x0003;
3129                 cmd->data.diagass.ext = 0x00010000 +
3130                         sizeof(struct qeth_trap_id);
3131                 qeth_get_trap_id(card,
3132                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3133                 break;
3134         case QETH_DIAGS_TRAP_DISARM:
3135                 cmd->data.diagass.options = 0x0001;
3136                 break;
3137         case QETH_DIAGS_TRAP_CAPTURE:
3138                 break;
3139         }
3140         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3141 }
3142 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3143
3144 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3145                 unsigned int qdio_error, const char *dbftext)
3146 {
3147         if (qdio_error) {
3148                 QETH_CARD_TEXT(card, 2, dbftext);
3149                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3150                                buf->element[15].sflags);
3151                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3152                                buf->element[14].sflags);
3153                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3154                 if ((buf->element[15].sflags) == 0x12) {
3155                         card->stats.rx_dropped++;
3156                         return 0;
3157                 } else
3158                         return 1;
3159         }
3160         return 0;
3161 }
3162 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3163
3164 void qeth_buffer_reclaim_work(struct work_struct *work)
3165 {
3166         struct qeth_card *card = container_of(work, struct qeth_card,
3167                 buffer_reclaim_work.work);
3168
3169         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3170         qeth_queue_input_buffer(card, card->reclaim_index);
3171 }
3172
3173 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3174 {
3175         struct qeth_qdio_q *queue = card->qdio.in_q;
3176         struct list_head *lh;
3177         int count;
3178         int i;
3179         int rc;
3180         int newcount = 0;
3181
3182         count = (index < queue->next_buf_to_init)?
3183                 card->qdio.in_buf_pool.buf_count -
3184                 (queue->next_buf_to_init - index) :
3185                 card->qdio.in_buf_pool.buf_count -
3186                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3187         /* only requeue at a certain threshold to avoid SIGAs */
3188         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3189                 for (i = queue->next_buf_to_init;
3190                      i < queue->next_buf_to_init + count; ++i) {
3191                         if (qeth_init_input_buffer(card,
3192                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3193                                 break;
3194                         } else {
3195                                 newcount++;
3196                         }
3197                 }
3198
3199                 if (newcount < count) {
3200                         /* we are in memory shortage so we switch back to
3201                            traditional skb allocation and drop packages */
3202                         atomic_set(&card->force_alloc_skb, 3);
3203                         count = newcount;
3204                 } else {
3205                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3206                 }
3207
3208                 if (!count) {
3209                         i = 0;
3210                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3211                                 i++;
3212                         if (i == card->qdio.in_buf_pool.buf_count) {
3213                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3214                                 card->reclaim_index = index;
3215                                 schedule_delayed_work(
3216                                         &card->buffer_reclaim_work,
3217                                         QETH_RECLAIM_WORK_TIME);
3218                         }
3219                         return;
3220                 }
3221
3222                 /*
3223                  * according to old code it should be avoided to requeue all
3224                  * 128 buffers in order to benefit from PCI avoidance.
3225                  * this function keeps at least one buffer (the buffer at
3226                  * 'index') un-requeued -> this buffer is the first buffer that
3227                  * will be requeued the next time
3228                  */
3229                 if (card->options.performance_stats) {
3230                         card->perf_stats.inbound_do_qdio_cnt++;
3231                         card->perf_stats.inbound_do_qdio_start_time =
3232                                 qeth_get_micros();
3233                 }
3234                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3235                              queue->next_buf_to_init, count);
3236                 if (card->options.performance_stats)
3237                         card->perf_stats.inbound_do_qdio_time +=
3238                                 qeth_get_micros() -
3239                                 card->perf_stats.inbound_do_qdio_start_time;
3240                 if (rc) {
3241                         QETH_CARD_TEXT(card, 2, "qinberr");
3242                 }
3243                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3244                                           QDIO_MAX_BUFFERS_PER_Q;
3245         }
3246 }
3247 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3248
3249 static int qeth_handle_send_error(struct qeth_card *card,
3250                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3251 {
3252         int sbalf15 = buffer->buffer->element[15].sflags;
3253
3254         QETH_CARD_TEXT(card, 6, "hdsnderr");
3255         if (card->info.type == QETH_CARD_TYPE_IQD) {
3256                 if (sbalf15 == 0) {
3257                         qdio_err = 0;
3258                 } else {
3259                         qdio_err = 1;
3260                 }
3261         }
3262         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3263
3264         if (!qdio_err)
3265                 return QETH_SEND_ERROR_NONE;
3266
3267         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3268                 return QETH_SEND_ERROR_RETRY;
3269
3270         QETH_CARD_TEXT(card, 1, "lnkfail");
3271         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3272                        (u16)qdio_err, (u8)sbalf15);
3273         return QETH_SEND_ERROR_LINK_FAILURE;
3274 }
3275
3276 /*
3277  * Switched to packing state if the number of used buffers on a queue
3278  * reaches a certain limit.
3279  */
3280 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3281 {
3282         if (!queue->do_pack) {
3283                 if (atomic_read(&queue->used_buffers)
3284                     >= QETH_HIGH_WATERMARK_PACK){
3285                         /* switch non-PACKING -> PACKING */
3286                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3287                         if (queue->card->options.performance_stats)
3288                                 queue->card->perf_stats.sc_dp_p++;
3289                         queue->do_pack = 1;
3290                 }
3291         }
3292 }
3293
3294 /*
3295  * Switches from packing to non-packing mode. If there is a packing
3296  * buffer on the queue this buffer will be prepared to be flushed.
3297  * In that case 1 is returned to inform the caller. If no buffer
3298  * has to be flushed, zero is returned.
3299  */
3300 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3301 {
3302         struct qeth_qdio_out_buffer *buffer;
3303         int flush_count = 0;
3304
3305         if (queue->do_pack) {
3306                 if (atomic_read(&queue->used_buffers)
3307                     <= QETH_LOW_WATERMARK_PACK) {
3308                         /* switch PACKING -> non-PACKING */
3309                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3310                         if (queue->card->options.performance_stats)
3311                                 queue->card->perf_stats.sc_p_dp++;
3312                         queue->do_pack = 0;
3313                         /* flush packing buffers */
3314                         buffer = queue->bufs[queue->next_buf_to_fill];
3315                         if ((atomic_read(&buffer->state) ==
3316                                                 QETH_QDIO_BUF_EMPTY) &&
3317                             (buffer->next_element_to_fill > 0)) {
3318                                 atomic_set(&buffer->state,
3319                                            QETH_QDIO_BUF_PRIMED);
3320                                 flush_count++;
3321                                 queue->next_buf_to_fill =
3322                                         (queue->next_buf_to_fill + 1) %
3323                                         QDIO_MAX_BUFFERS_PER_Q;
3324                         }
3325                 }
3326         }
3327         return flush_count;
3328 }
3329
3330
3331 /*
3332  * Called to flush a packing buffer if no more pci flags are on the queue.
3333  * Checks if there is a packing buffer and prepares it to be flushed.
3334  * In that case returns 1, otherwise zero.
3335  */
3336 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3337 {
3338         struct qeth_qdio_out_buffer *buffer;
3339
3340         buffer = queue->bufs[queue->next_buf_to_fill];
3341         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3342            (buffer->next_element_to_fill > 0)) {
3343                 /* it's a packing buffer */
3344                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3345                 queue->next_buf_to_fill =
3346                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3347                 return 1;
3348         }
3349         return 0;
3350 }
3351
3352 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3353                                int count)
3354 {
3355         struct qeth_qdio_out_buffer *buf;
3356         int rc;
3357         int i;
3358         unsigned int qdio_flags;
3359
3360         for (i = index; i < index + count; ++i) {
3361                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3362                 buf = queue->bufs[bidx];
3363                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3364                                 SBAL_EFLAGS_LAST_ENTRY;
3365
3366                 if (queue->bufstates)
3367                         queue->bufstates[bidx].user = buf;
3368
3369                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3370                         continue;
3371
3372                 if (!queue->do_pack) {
3373                         if ((atomic_read(&queue->used_buffers) >=
3374                                 (QETH_HIGH_WATERMARK_PACK -
3375                                  QETH_WATERMARK_PACK_FUZZ)) &&
3376                             !atomic_read(&queue->set_pci_flags_count)) {
3377                                 /* it's likely that we'll go to packing
3378                                  * mode soon */
3379                                 atomic_inc(&queue->set_pci_flags_count);
3380                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3381                         }
3382                 } else {
3383                         if (!atomic_read(&queue->set_pci_flags_count)) {
3384                                 /*
3385                                  * there's no outstanding PCI any more, so we
3386                                  * have to request a PCI to be sure the the PCI
3387                                  * will wake at some time in the future then we
3388                                  * can flush packed buffers that might still be
3389                                  * hanging around, which can happen if no
3390                                  * further send was requested by the stack
3391                                  */
3392                                 atomic_inc(&queue->set_pci_flags_count);
3393                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3394                         }
3395                 }
3396         }
3397
3398         queue->card->dev->trans_start = jiffies;
3399         if (queue->card->options.performance_stats) {
3400                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3401                 queue->card->perf_stats.outbound_do_qdio_start_time =
3402                         qeth_get_micros();
3403         }
3404         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3405         if (atomic_read(&queue->set_pci_flags_count))
3406                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3407         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3408                      queue->queue_no, index, count);
3409         if (queue->card->options.performance_stats)
3410                 queue->card->perf_stats.outbound_do_qdio_time +=
3411                         qeth_get_micros() -
3412                         queue->card->perf_stats.outbound_do_qdio_start_time;
3413         atomic_add(count, &queue->used_buffers);
3414         if (rc) {
3415                 queue->card->stats.tx_errors += count;
3416                 /* ignore temporary SIGA errors without busy condition */
3417                 if (rc == -ENOBUFS)
3418                         return;
3419                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3420                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3421                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3422                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3423                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3424
3425                 /* this must not happen under normal circumstances. if it
3426                  * happens something is really wrong -> recover */
3427                 qeth_schedule_recovery(queue->card);
3428                 return;
3429         }
3430         if (queue->card->options.performance_stats)
3431                 queue->card->perf_stats.bufs_sent += count;
3432 }
3433
3434 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3435 {
3436         int index;
3437         int flush_cnt = 0;
3438         int q_was_packing = 0;
3439
3440         /*
3441          * check if weed have to switch to non-packing mode or if
3442          * we have to get a pci flag out on the queue
3443          */
3444         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3445             !atomic_read(&queue->set_pci_flags_count)) {
3446                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3447                                 QETH_OUT_Q_UNLOCKED) {
3448                         /*
3449                          * If we get in here, there was no action in
3450                          * do_send_packet. So, we check if there is a
3451                          * packing buffer to be flushed here.
3452                          */
3453                         netif_stop_queue(queue->card->dev);
3454                         index = queue->next_buf_to_fill;
3455                         q_was_packing = queue->do_pack;
3456                         /* queue->do_pack may change */
3457                         barrier();
3458                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3459                         if (!flush_cnt &&
3460                             !atomic_read(&queue->set_pci_flags_count))
3461                                 flush_cnt +=
3462                                         qeth_flush_buffers_on_no_pci(queue);
3463                         if (queue->card->options.performance_stats &&
3464                             q_was_packing)
3465                                 queue->card->perf_stats.bufs_sent_pack +=
3466                                         flush_cnt;
3467                         if (flush_cnt)
3468                                 qeth_flush_buffers(queue, index, flush_cnt);
3469                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3470                 }
3471         }
3472 }
3473
3474 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3475                 unsigned long card_ptr)
3476 {
3477         struct qeth_card *card = (struct qeth_card *)card_ptr;
3478
3479         if (card->dev && (card->dev->flags & IFF_UP))
3480                 napi_schedule(&card->napi);
3481 }
3482 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3483
3484 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3485 {
3486         int rc;
3487
3488         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3489                 rc = -1;
3490                 goto out;
3491         } else {
3492                 if (card->options.cq == cq) {
3493                         rc = 0;
3494                         goto out;
3495                 }
3496
3497                 if (card->state != CARD_STATE_DOWN &&
3498                     card->state != CARD_STATE_RECOVER) {
3499                         rc = -1;
3500                         goto out;
3501                 }
3502
3503                 qeth_free_qdio_buffers(card);
3504                 card->options.cq = cq;
3505                 rc = 0;
3506         }
3507 out:
3508         return rc;
3509
3510 }
3511 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3512
3513
3514 static void qeth_qdio_cq_handler(struct qeth_card *card,
3515                 unsigned int qdio_err,
3516                 unsigned int queue, int first_element, int count) {
3517         struct qeth_qdio_q *cq = card->qdio.c_q;
3518         int i;
3519         int rc;
3520
3521         if (!qeth_is_cq(card, queue))
3522                 goto out;
3523
3524         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3525         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3526         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3527
3528         if (qdio_err) {
3529                 netif_stop_queue(card->dev);
3530                 qeth_schedule_recovery(card);
3531                 goto out;
3532         }
3533
3534         if (card->options.performance_stats) {
3535                 card->perf_stats.cq_cnt++;
3536                 card->perf_stats.cq_start_time = qeth_get_micros();
3537         }
3538
3539         for (i = first_element; i < first_element + count; ++i) {
3540                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3541                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3542                 int e;
3543
3544                 e = 0;
3545                 while (buffer->element[e].addr) {
3546                         unsigned long phys_aob_addr;
3547
3548                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3549                         qeth_qdio_handle_aob(card, phys_aob_addr);
3550                         buffer->element[e].addr = NULL;
3551                         buffer->element[e].eflags = 0;
3552                         buffer->element[e].sflags = 0;
3553                         buffer->element[e].length = 0;
3554
3555                         ++e;
3556                 }
3557
3558                 buffer->element[15].eflags = 0;
3559                 buffer->element[15].sflags = 0;
3560         }
3561         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3562                     card->qdio.c_q->next_buf_to_init,
3563                     count);
3564         if (rc) {
3565                 dev_warn(&card->gdev->dev,
3566                         "QDIO reported an error, rc=%i\n", rc);
3567                 QETH_CARD_TEXT(card, 2, "qcqherr");
3568         }
3569         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3570                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3571
3572         netif_wake_queue(card->dev);
3573
3574         if (card->options.performance_stats) {
3575                 int delta_t = qeth_get_micros();
3576                 delta_t -= card->perf_stats.cq_start_time;
3577                 card->perf_stats.cq_time += delta_t;
3578         }
3579 out:
3580         return;
3581 }
3582
3583 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3584                 unsigned int queue, int first_elem, int count,
3585                 unsigned long card_ptr)
3586 {
3587         struct qeth_card *card = (struct qeth_card *)card_ptr;
3588
3589         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3590         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3591
3592         if (qeth_is_cq(card, queue))
3593                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3594         else if (qdio_err)
3595                 qeth_schedule_recovery(card);
3596
3597
3598 }
3599 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3600
3601 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3602                 unsigned int qdio_error, int __queue, int first_element,
3603                 int count, unsigned long card_ptr)
3604 {
3605         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3606         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3607         struct qeth_qdio_out_buffer *buffer;
3608         int i;
3609
3610         QETH_CARD_TEXT(card, 6, "qdouhdl");
3611         if (qdio_error & QDIO_ERROR_FATAL) {
3612                 QETH_CARD_TEXT(card, 2, "achkcond");
3613                 netif_stop_queue(card->dev);
3614                 qeth_schedule_recovery(card);
3615                 return;
3616         }
3617         if (card->options.performance_stats) {
3618                 card->perf_stats.outbound_handler_cnt++;
3619                 card->perf_stats.outbound_handler_start_time =
3620                         qeth_get_micros();
3621         }
3622         for (i = first_element; i < (first_element + count); ++i) {
3623                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3624                 buffer = queue->bufs[bidx];
3625                 qeth_handle_send_error(card, buffer, qdio_error);
3626
3627                 if (queue->bufstates &&
3628                     (queue->bufstates[bidx].flags &
3629                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3630                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3631
3632                         if (atomic_cmpxchg(&buffer->state,
3633                                            QETH_QDIO_BUF_PRIMED,
3634                                            QETH_QDIO_BUF_PENDING) ==
3635                                 QETH_QDIO_BUF_PRIMED) {
3636                                 qeth_notify_skbs(queue, buffer,
3637                                                  TX_NOTIFY_PENDING);
3638                         }
3639                         buffer->aob = queue->bufstates[bidx].aob;
3640                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3641                         QETH_CARD_TEXT(queue->card, 5, "aob");
3642                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3643                                         virt_to_phys(buffer->aob));
3644                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3645                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3646                                 qeth_schedule_recovery(card);
3647                         }
3648                 } else {
3649                         if (card->options.cq == QETH_CQ_ENABLED) {
3650                                 enum iucv_tx_notify n;
3651
3652                                 n = qeth_compute_cq_notification(
3653                                         buffer->buffer->element[15].sflags, 0);
3654                                 qeth_notify_skbs(queue, buffer, n);
3655                         }
3656
3657                         qeth_clear_output_buffer(queue, buffer,
3658                                                 QETH_QDIO_BUF_EMPTY);
3659                 }
3660                 qeth_cleanup_handled_pending(queue, bidx, 0);
3661         }
3662         atomic_sub(count, &queue->used_buffers);
3663         /* check if we need to do something on this outbound queue */
3664         if (card->info.type != QETH_CARD_TYPE_IQD)
3665                 qeth_check_outbound_queue(queue);
3666
3667         netif_wake_queue(queue->card->dev);
3668         if (card->options.performance_stats)
3669                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3670                         card->perf_stats.outbound_handler_start_time;
3671 }
3672 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3673
3674 /**
3675  * Note: Function assumes that we have 4 outbound queues.
3676  */
3677 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3678                         int ipv, int cast_type)
3679 {
3680         __be16 *tci;
3681         u8 tos;
3682
3683         if (cast_type && card->info.is_multicast_different)
3684                 return card->info.is_multicast_different &
3685                         (card->qdio.no_out_queues - 1);
3686
3687         switch (card->qdio.do_prio_queueing) {
3688         case QETH_PRIO_Q_ING_TOS:
3689         case QETH_PRIO_Q_ING_PREC:
3690                 switch (ipv) {
3691                 case 4:
3692                         tos = ipv4_get_dsfield(ip_hdr(skb));
3693                         break;
3694                 case 6:
3695                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3696                         break;
3697                 default:
3698                         return card->qdio.default_out_queue;
3699                 }
3700                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3701                         return ~tos >> 6 & 3;
3702                 if (tos & IPTOS_MINCOST)
3703                         return 3;
3704                 if (tos & IPTOS_RELIABILITY)
3705                         return 2;
3706                 if (tos & IPTOS_THROUGHPUT)
3707                         return 1;
3708                 if (tos & IPTOS_LOWDELAY)
3709                         return 0;
3710                 break;
3711         case QETH_PRIO_Q_ING_SKB:
3712                 if (skb->priority > 5)
3713                         return 0;
3714                 return ~skb->priority >> 1 & 3;
3715         case QETH_PRIO_Q_ING_VLAN:
3716                 tci = &((struct ethhdr *)skb->data)->h_proto;
3717                 if (*tci == ETH_P_8021Q)
3718                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3719                 break;
3720         default:
3721                 break;
3722         }
3723         return card->qdio.default_out_queue;
3724 }
3725 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3726
3727 int qeth_get_elements_for_frags(struct sk_buff *skb)
3728 {
3729         int cnt, length, e, elements = 0;
3730         struct skb_frag_struct *frag;
3731         char *data;
3732
3733         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3734                 frag = &skb_shinfo(skb)->frags[cnt];
3735                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3736                         frag->page_offset;
3737                 length = frag->size;
3738                 e = PFN_UP((unsigned long)data + length - 1) -
3739                         PFN_DOWN((unsigned long)data);
3740                 elements += e;
3741         }
3742         return elements;
3743 }
3744 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3745
3746 int qeth_get_elements_no(struct qeth_card *card,
3747                      struct sk_buff *skb, int elems)
3748 {
3749         int dlen = skb->len - skb->data_len;
3750         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3751                 PFN_DOWN((unsigned long)skb->data);
3752
3753         elements_needed += qeth_get_elements_for_frags(skb);
3754
3755         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3756                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3757                         "(Number=%d / Length=%d). Discarded.\n",
3758                         (elements_needed+elems), skb->len);
3759                 return 0;
3760         }
3761         return elements_needed;
3762 }
3763 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3764
3765 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3766 {
3767         int hroom, inpage, rest;
3768
3769         if (((unsigned long)skb->data & PAGE_MASK) !=
3770             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3771                 hroom = skb_headroom(skb);
3772                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3773                 rest = len - inpage;
3774                 if (rest > hroom)
3775                         return 1;
3776                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3777                 skb->data -= rest;
3778                 skb->tail -= rest;
3779                 *hdr = (struct qeth_hdr *)skb->data;
3780                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3781         }
3782         return 0;
3783 }
3784 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3785
3786 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3787         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3788         int offset)
3789 {
3790         int length = skb->len - skb->data_len;
3791         int length_here;
3792         int element;
3793         char *data;
3794         int first_lap, cnt;
3795         struct skb_frag_struct *frag;
3796
3797         element = *next_element_to_fill;
3798         data = skb->data;
3799         first_lap = (is_tso == 0 ? 1 : 0);
3800
3801         if (offset >= 0) {
3802                 data = skb->data + offset;
3803                 length -= offset;
3804                 first_lap = 0;
3805         }
3806
3807         while (length > 0) {
3808                 /* length_here is the remaining amount of data in this page */
3809                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3810                 if (length < length_here)
3811                         length_here = length;
3812
3813                 buffer->element[element].addr = data;
3814                 buffer->element[element].length = length_here;
3815                 length -= length_here;
3816                 if (!length) {
3817                         if (first_lap)
3818                                 if (skb_shinfo(skb)->nr_frags)
3819                                         buffer->element[element].eflags =
3820                                                 SBAL_EFLAGS_FIRST_FRAG;
3821                                 else
3822                                         buffer->element[element].eflags = 0;
3823                         else
3824                                 buffer->element[element].eflags =
3825                                     SBAL_EFLAGS_MIDDLE_FRAG;
3826                 } else {
3827                         if (first_lap)
3828                                 buffer->element[element].eflags =
3829                                     SBAL_EFLAGS_FIRST_FRAG;
3830                         else
3831                                 buffer->element[element].eflags =
3832                                     SBAL_EFLAGS_MIDDLE_FRAG;
3833                 }
3834                 data += length_here;
3835                 element++;
3836                 first_lap = 0;
3837         }
3838
3839         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3840                 frag = &skb_shinfo(skb)->frags[cnt];
3841                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3842                         frag->page_offset;
3843                 length = frag->size;
3844                 while (length > 0) {
3845                         length_here = PAGE_SIZE -
3846                                 ((unsigned long) data % PAGE_SIZE);
3847                         if (length < length_here)
3848                                 length_here = length;
3849
3850                         buffer->element[element].addr = data;
3851                         buffer->element[element].length = length_here;
3852                         buffer->element[element].eflags =
3853                                 SBAL_EFLAGS_MIDDLE_FRAG;
3854                         length -= length_here;
3855                         data += length_here;
3856                         element++;
3857                 }
3858         }
3859
3860         if (buffer->element[element - 1].eflags)
3861                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3862         *next_element_to_fill = element;
3863 }
3864
3865 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3866                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3867                 struct qeth_hdr *hdr, int offset, int hd_len)
3868 {
3869         struct qdio_buffer *buffer;
3870         int flush_cnt = 0, hdr_len, large_send = 0;
3871
3872         buffer = buf->buffer;
3873         atomic_inc(&skb->users);
3874         skb_queue_tail(&buf->skb_list, skb);
3875
3876         /*check first on TSO ....*/
3877         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3878                 int element = buf->next_element_to_fill;
3879
3880                 hdr_len = sizeof(struct qeth_hdr_tso) +
3881                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3882                 /*fill first buffer entry only with header information */
3883                 buffer->element[element].addr = skb->data;
3884                 buffer->element[element].length = hdr_len;
3885                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3886                 buf->next_element_to_fill++;
3887                 skb->data += hdr_len;
3888                 skb->len  -= hdr_len;
3889                 large_send = 1;
3890         }
3891
3892         if (offset >= 0) {
3893                 int element = buf->next_element_to_fill;
3894                 buffer->element[element].addr = hdr;
3895                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3896                                                         hd_len;
3897                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3898                 buf->is_header[element] = 1;
3899                 buf->next_element_to_fill++;
3900         }
3901
3902         __qeth_fill_buffer(skb, buffer, large_send,
3903                 (int *)&buf->next_element_to_fill, offset);
3904
3905         if (!queue->do_pack) {
3906                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3907                 /* set state to PRIMED -> will be flushed */
3908                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3909                 flush_cnt = 1;
3910         } else {
3911                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3912                 if (queue->card->options.performance_stats)
3913                         queue->card->perf_stats.skbs_sent_pack++;
3914                 if (buf->next_element_to_fill >=
3915                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3916                         /*
3917                          * packed buffer if full -> set state PRIMED
3918                          * -> will be flushed
3919                          */
3920                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3921                         flush_cnt = 1;
3922                 }
3923         }
3924         return flush_cnt;
3925 }
3926
3927 int qeth_do_send_packet_fast(struct qeth_card *card,
3928                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3929                 struct qeth_hdr *hdr, int elements_needed,
3930                 int offset, int hd_len)
3931 {
3932         struct qeth_qdio_out_buffer *buffer;
3933         int index;
3934
3935         /* spin until we get the queue ... */
3936         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3937                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3938         /* ... now we've got the queue */
3939         index = queue->next_buf_to_fill;
3940         buffer = queue->bufs[queue->next_buf_to_fill];
3941         /*
3942          * check if buffer is empty to make sure that we do not 'overtake'
3943          * ourselves and try to fill a buffer that is already primed
3944          */
3945         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3946                 goto out;
3947         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3948                                           QDIO_MAX_BUFFERS_PER_Q;
3949         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3950         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3951         qeth_flush_buffers(queue, index, 1);
3952         return 0;
3953 out:
3954         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3955         return -EBUSY;
3956 }
3957 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3958
3959 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3960                 struct sk_buff *skb, struct qeth_hdr *hdr,
3961                 int elements_needed)
3962 {
3963         struct qeth_qdio_out_buffer *buffer;
3964         int start_index;
3965         int flush_count = 0;
3966         int do_pack = 0;
3967         int tmp;
3968         int rc = 0;
3969
3970         /* spin until we get the queue ... */
3971         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3972                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3973         start_index = queue->next_buf_to_fill;
3974         buffer = queue->bufs[queue->next_buf_to_fill];
3975         /*
3976          * check if buffer is empty to make sure that we do not 'overtake'
3977          * ourselves and try to fill a buffer that is already primed
3978          */
3979         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3980                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3981                 return -EBUSY;
3982         }
3983         /* check if we need to switch packing state of this queue */
3984         qeth_switch_to_packing_if_needed(queue);
3985         if (queue->do_pack) {
3986                 do_pack = 1;
3987                 /* does packet fit in current buffer? */
3988                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3989                     buffer->next_element_to_fill) < elements_needed) {
3990                         /* ... no -> set state PRIMED */
3991                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3992                         flush_count++;
3993                         queue->next_buf_to_fill =
3994                                 (queue->next_buf_to_fill + 1) %
3995                                 QDIO_MAX_BUFFERS_PER_Q;
3996                         buffer = queue->bufs[queue->next_buf_to_fill];
3997                         /* we did a step forward, so check buffer state
3998                          * again */
3999                         if (atomic_read(&buffer->state) !=
4000                             QETH_QDIO_BUF_EMPTY) {
4001                                 qeth_flush_buffers(queue, start_index,
4002                                                            flush_count);
4003                                 atomic_set(&queue->state,
4004                                                 QETH_OUT_Q_UNLOCKED);
4005                                 return -EBUSY;
4006                         }
4007                 }
4008         }
4009         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4010         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4011                                   QDIO_MAX_BUFFERS_PER_Q;
4012         flush_count += tmp;
4013         if (flush_count)
4014                 qeth_flush_buffers(queue, start_index, flush_count);
4015         else if (!atomic_read(&queue->set_pci_flags_count))
4016                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4017         /*
4018          * queue->state will go from LOCKED -> UNLOCKED or from
4019          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4020          * (switch packing state or flush buffer to get another pci flag out).
4021          * In that case we will enter this loop
4022          */
4023         while (atomic_dec_return(&queue->state)) {
4024                 flush_count = 0;
4025                 start_index = queue->next_buf_to_fill;
4026                 /* check if we can go back to non-packing state */
4027                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4028                 /*
4029                  * check if we need to flush a packing buffer to get a pci
4030                  * flag out on the queue
4031                  */
4032                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4033                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4034                 if (flush_count)
4035                         qeth_flush_buffers(queue, start_index, flush_count);
4036         }
4037         /* at this point the queue is UNLOCKED again */
4038         if (queue->card->options.performance_stats && do_pack)
4039                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4040
4041         return rc;
4042 }
4043 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4044
4045 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4046                 struct qeth_reply *reply, unsigned long data)
4047 {
4048         struct qeth_ipa_cmd *cmd;
4049         struct qeth_ipacmd_setadpparms *setparms;
4050
4051         QETH_CARD_TEXT(card, 4, "prmadpcb");
4052
4053         cmd = (struct qeth_ipa_cmd *) data;
4054         setparms = &(cmd->data.setadapterparms);
4055
4056         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4057         if (cmd->hdr.return_code) {
4058                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4059                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4060         }
4061         card->info.promisc_mode = setparms->data.mode;
4062         return 0;
4063 }
4064
4065 void qeth_setadp_promisc_mode(struct qeth_card *card)
4066 {
4067         enum qeth_ipa_promisc_modes mode;
4068         struct net_device *dev = card->dev;
4069         struct qeth_cmd_buffer *iob;
4070         struct qeth_ipa_cmd *cmd;
4071
4072         QETH_CARD_TEXT(card, 4, "setprom");
4073
4074         if (((dev->flags & IFF_PROMISC) &&
4075              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4076             (!(dev->flags & IFF_PROMISC) &&
4077              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4078                 return;
4079         mode = SET_PROMISC_MODE_OFF;
4080         if (dev->flags & IFF_PROMISC)
4081                 mode = SET_PROMISC_MODE_ON;
4082         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4083
4084         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4085                         sizeof(struct qeth_ipacmd_setadpparms));
4086         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4087         cmd->data.setadapterparms.data.mode = mode;
4088         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4089 }
4090 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4091
4092 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4093 {
4094         struct qeth_card *card;
4095         char dbf_text[15];
4096
4097         card = dev->ml_priv;
4098
4099         QETH_CARD_TEXT(card, 4, "chgmtu");
4100         sprintf(dbf_text, "%8x", new_mtu);
4101         QETH_CARD_TEXT(card, 4, dbf_text);
4102
4103         if (new_mtu < 64)
4104                 return -EINVAL;
4105         if (new_mtu > 65535)
4106                 return -EINVAL;
4107         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4108             (!qeth_mtu_is_valid(card, new_mtu)))
4109                 return -EINVAL;
4110         dev->mtu = new_mtu;
4111         return 0;
4112 }
4113 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4114
4115 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4116 {
4117         struct qeth_card *card;
4118
4119         card = dev->ml_priv;
4120
4121         QETH_CARD_TEXT(card, 5, "getstat");
4122
4123         return &card->stats;
4124 }
4125 EXPORT_SYMBOL_GPL(qeth_get_stats);
4126
4127 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4128                 struct qeth_reply *reply, unsigned long data)
4129 {
4130         struct qeth_ipa_cmd *cmd;
4131
4132         QETH_CARD_TEXT(card, 4, "chgmaccb");
4133
4134         cmd = (struct qeth_ipa_cmd *) data;
4135         if (!card->options.layer2 ||
4136             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4137                 memcpy(card->dev->dev_addr,
4138                        &cmd->data.setadapterparms.data.change_addr.addr,
4139                        OSA_ADDR_LEN);
4140                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4141         }
4142         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4143         return 0;
4144 }
4145
4146 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4147 {
4148         int rc;
4149         struct qeth_cmd_buffer *iob;
4150         struct qeth_ipa_cmd *cmd;
4151
4152         QETH_CARD_TEXT(card, 4, "chgmac");
4153
4154         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4155                                    sizeof(struct qeth_ipacmd_setadpparms));
4156         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4157         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4158         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4159         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4160                card->dev->dev_addr, OSA_ADDR_LEN);
4161         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4162                                NULL);
4163         return rc;
4164 }
4165 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4166
4167 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4168                 struct qeth_reply *reply, unsigned long data)
4169 {
4170         struct qeth_ipa_cmd *cmd;
4171         struct qeth_set_access_ctrl *access_ctrl_req;
4172         int fallback = *(int *)reply->param;
4173
4174         QETH_CARD_TEXT(card, 4, "setaccb");
4175
4176         cmd = (struct qeth_ipa_cmd *) data;
4177         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4178         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4179         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4180         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4181                 cmd->data.setadapterparms.hdr.return_code);
4182         if (cmd->data.setadapterparms.hdr.return_code !=
4183                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4184                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4185                                 card->gdev->dev.kobj.name,
4186                                 access_ctrl_req->subcmd_code,
4187                                 cmd->data.setadapterparms.hdr.return_code);
4188         switch (cmd->data.setadapterparms.hdr.return_code) {
4189         case SET_ACCESS_CTRL_RC_SUCCESS:
4190                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4191                         dev_info(&card->gdev->dev,
4192                             "QDIO data connection isolation is deactivated\n");
4193                 } else {
4194                         dev_info(&card->gdev->dev,
4195                             "QDIO data connection isolation is activated\n");
4196                 }
4197                 break;
4198         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4199                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4200                                 "deactivated\n", dev_name(&card->gdev->dev));
4201                 if (fallback)
4202                         card->options.isolation = card->options.prev_isolation;
4203                 break;
4204         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4205                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4206                                 " activated\n", dev_name(&card->gdev->dev));
4207                 if (fallback)
4208                         card->options.isolation = card->options.prev_isolation;
4209                 break;
4210         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4211                 dev_err(&card->gdev->dev, "Adapter does not "
4212                         "support QDIO data connection isolation\n");
4213                 break;
4214         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4215                 dev_err(&card->gdev->dev,
4216                         "Adapter is dedicated. "
4217                         "QDIO data connection isolation not supported\n");
4218                 if (fallback)
4219                         card->options.isolation = card->options.prev_isolation;
4220                 break;
4221         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4222                 dev_err(&card->gdev->dev,
4223                         "TSO does not permit QDIO data connection isolation\n");
4224                 if (fallback)
4225                         card->options.isolation = card->options.prev_isolation;
4226                 break;
4227         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4228                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4229                         "support reflective relay mode\n");
4230                 if (fallback)
4231                         card->options.isolation = card->options.prev_isolation;
4232                 break;
4233         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4234                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4235                                         "enabled at the adjacent switch port");
4236                 if (fallback)
4237                         card->options.isolation = card->options.prev_isolation;
4238                 break;
4239         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4240                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4241                                         "at the adjacent switch failed\n");
4242                 break;
4243         default:
4244                 /* this should never happen */
4245                 if (fallback)
4246                         card->options.isolation = card->options.prev_isolation;
4247                 break;
4248         }
4249         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4250         return 0;
4251 }
4252
4253 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4254                 enum qeth_ipa_isolation_modes isolation, int fallback)
4255 {
4256         int rc;
4257         struct qeth_cmd_buffer *iob;
4258         struct qeth_ipa_cmd *cmd;
4259         struct qeth_set_access_ctrl *access_ctrl_req;
4260
4261         QETH_CARD_TEXT(card, 4, "setacctl");
4262
4263         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4264         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4265
4266         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4267                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4268                                    sizeof(struct qeth_set_access_ctrl));
4269         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4270         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4271         access_ctrl_req->subcmd_code = isolation;
4272
4273         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4274                                &fallback);
4275         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4276         return rc;
4277 }
4278
4279 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4280 {
4281         int rc = 0;
4282
4283         QETH_CARD_TEXT(card, 4, "setactlo");
4284
4285         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4286              card->info.type == QETH_CARD_TYPE_OSX) &&
4287              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4288                 rc = qeth_setadpparms_set_access_ctrl(card,
4289                         card->options.isolation, fallback);
4290                 if (rc) {
4291                         QETH_DBF_MESSAGE(3,
4292                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4293                                 card->gdev->dev.kobj.name,
4294                                 rc);
4295                         rc = -EOPNOTSUPP;
4296                 }
4297         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4298                 card->options.isolation = ISOLATION_MODE_NONE;
4299
4300                 dev_err(&card->gdev->dev, "Adapter does not "
4301                         "support QDIO data connection isolation\n");
4302                 rc = -EOPNOTSUPP;
4303         }
4304         return rc;
4305 }
4306 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4307
4308 void qeth_tx_timeout(struct net_device *dev)
4309 {
4310         struct qeth_card *card;
4311
4312         card = dev->ml_priv;
4313         QETH_CARD_TEXT(card, 4, "txtimeo");
4314         card->stats.tx_errors++;
4315         qeth_schedule_recovery(card);
4316 }
4317 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4318
4319 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4320 {
4321         struct qeth_card *card = dev->ml_priv;
4322         int rc = 0;
4323
4324         switch (regnum) {
4325         case MII_BMCR: /* Basic mode control register */
4326                 rc = BMCR_FULLDPLX;
4327                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4328                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4329                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4330                         rc |= BMCR_SPEED100;
4331                 break;
4332         case MII_BMSR: /* Basic mode status register */
4333                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4334                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4335                      BMSR_100BASE4;
4336                 break;
4337         case MII_PHYSID1: /* PHYS ID 1 */
4338                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4339                      dev->dev_addr[2];
4340                 rc = (rc >> 5) & 0xFFFF;
4341                 break;
4342         case MII_PHYSID2: /* PHYS ID 2 */
4343                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4344                 break;
4345         case MII_ADVERTISE: /* Advertisement control reg */
4346                 rc = ADVERTISE_ALL;
4347                 break;
4348         case MII_LPA: /* Link partner ability reg */
4349                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4350                      LPA_100BASE4 | LPA_LPACK;
4351                 break;
4352         case MII_EXPANSION: /* Expansion register */
4353                 break;
4354         case MII_DCOUNTER: /* disconnect counter */
4355                 break;
4356         case MII_FCSCOUNTER: /* false carrier counter */
4357                 break;
4358         case MII_NWAYTEST: /* N-way auto-neg test register */
4359                 break;
4360         case MII_RERRCOUNTER: /* rx error counter */
4361                 rc = card->stats.rx_errors;
4362                 break;
4363         case MII_SREVISION: /* silicon revision */
4364                 break;
4365         case MII_RESV1: /* reserved 1 */
4366                 break;
4367         case MII_LBRERROR: /* loopback, rx, bypass error */
4368                 break;
4369         case MII_PHYADDR: /* physical address */
4370                 break;
4371         case MII_RESV2: /* reserved 2 */
4372                 break;
4373         case MII_TPISTATUS: /* TPI status for 10mbps */
4374                 break;
4375         case MII_NCONFIG: /* network interface config */
4376                 break;
4377         default:
4378                 break;
4379         }
4380         return rc;
4381 }
4382 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4383
4384 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4385                 struct qeth_cmd_buffer *iob, int len,
4386                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4387                         unsigned long),
4388                 void *reply_param)
4389 {
4390         u16 s1, s2;
4391
4392         QETH_CARD_TEXT(card, 4, "sendsnmp");
4393
4394         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4395         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4396                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4397         /* adjust PDU length fields in IPA_PDU_HEADER */
4398         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4399         s2 = (u32) len;
4400         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4401         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4402         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4403         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4404         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4405                                       reply_cb, reply_param);
4406 }
4407
4408 static int qeth_snmp_command_cb(struct qeth_card *card,
4409                 struct qeth_reply *reply, unsigned long sdata)
4410 {
4411         struct qeth_ipa_cmd *cmd;
4412         struct qeth_arp_query_info *qinfo;
4413         struct qeth_snmp_cmd *snmp;
4414         unsigned char *data;
4415         __u16 data_len;
4416
4417         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4418
4419         cmd = (struct qeth_ipa_cmd *) sdata;
4420         data = (unsigned char *)((char *)cmd - reply->offset);
4421         qinfo = (struct qeth_arp_query_info *) reply->param;
4422         snmp = &cmd->data.setadapterparms.data.snmp;
4423
4424         if (cmd->hdr.return_code) {
4425                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4426                 return 0;
4427         }
4428         if (cmd->data.setadapterparms.hdr.return_code) {
4429                 cmd->hdr.return_code =
4430                         cmd->data.setadapterparms.hdr.return_code;
4431                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4432                 return 0;
4433         }
4434         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4435         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4436                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4437         else
4438                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4439
4440         /* check if there is enough room in userspace */
4441         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4442                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4443                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4444                 return 0;
4445         }
4446         QETH_CARD_TEXT_(card, 4, "snore%i",
4447                        cmd->data.setadapterparms.hdr.used_total);
4448         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4449                 cmd->data.setadapterparms.hdr.seq_no);
4450         /*copy entries to user buffer*/
4451         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4452                 memcpy(qinfo->udata + qinfo->udata_offset,
4453                        (char *)snmp,
4454                        data_len + offsetof(struct qeth_snmp_cmd, data));
4455                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4456         } else {
4457                 memcpy(qinfo->udata + qinfo->udata_offset,
4458                        (char *)&snmp->request, data_len);
4459         }
4460         qinfo->udata_offset += data_len;
4461         /* check if all replies received ... */
4462                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4463                                cmd->data.setadapterparms.hdr.used_total);
4464                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4465                                cmd->data.setadapterparms.hdr.seq_no);
4466         if (cmd->data.setadapterparms.hdr.seq_no <
4467             cmd->data.setadapterparms.hdr.used_total)
4468                 return 1;
4469         return 0;
4470 }
4471
4472 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4473 {
4474         struct qeth_cmd_buffer *iob;
4475         struct qeth_ipa_cmd *cmd;
4476         struct qeth_snmp_ureq *ureq;
4477         unsigned int req_len;
4478         struct qeth_arp_query_info qinfo = {0, };
4479         int rc = 0;
4480
4481         QETH_CARD_TEXT(card, 3, "snmpcmd");
4482
4483         if (card->info.guestlan)
4484                 return -EOPNOTSUPP;
4485
4486         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4487             (!card->options.layer2)) {
4488                 return -EOPNOTSUPP;
4489         }
4490         /* skip 4 bytes (data_len struct member) to get req_len */
4491         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4492                 return -EFAULT;
4493         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4494                        sizeof(struct qeth_ipacmd_hdr) -
4495                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4496                 return -EINVAL;
4497         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4498         if (IS_ERR(ureq)) {
4499                 QETH_CARD_TEXT(card, 2, "snmpnome");
4500                 return PTR_ERR(ureq);
4501         }
4502         qinfo.udata_len = ureq->hdr.data_len;
4503         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4504         if (!qinfo.udata) {
4505                 kfree(ureq);
4506                 return -ENOMEM;
4507         }
4508         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4509
4510         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4511                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4512         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4513         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4514         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4515                                     qeth_snmp_command_cb, (void *)&qinfo);
4516         if (rc)
4517                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4518                            QETH_CARD_IFNAME(card), rc);
4519         else {
4520                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4521                         rc = -EFAULT;
4522         }
4523
4524         kfree(ureq);
4525         kfree(qinfo.udata);
4526         return rc;
4527 }
4528 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4529
4530 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4531                 struct qeth_reply *reply, unsigned long data)
4532 {
4533         struct qeth_ipa_cmd *cmd;
4534         struct qeth_qoat_priv *priv;
4535         char *resdata;
4536         int resdatalen;
4537
4538         QETH_CARD_TEXT(card, 3, "qoatcb");
4539
4540         cmd = (struct qeth_ipa_cmd *)data;
4541         priv = (struct qeth_qoat_priv *)reply->param;
4542         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4543         resdata = (char *)data + 28;
4544
4545         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4546                 cmd->hdr.return_code = IPA_RC_FFFF;
4547                 return 0;
4548         }
4549
4550         memcpy((priv->buffer + priv->response_len), resdata,
4551                 resdatalen);
4552         priv->response_len += resdatalen;
4553
4554         if (cmd->data.setadapterparms.hdr.seq_no <
4555             cmd->data.setadapterparms.hdr.used_total)
4556                 return 1;
4557         return 0;
4558 }
4559
4560 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4561 {
4562         int rc = 0;
4563         struct qeth_cmd_buffer *iob;
4564         struct qeth_ipa_cmd *cmd;
4565         struct qeth_query_oat *oat_req;
4566         struct qeth_query_oat_data oat_data;
4567         struct qeth_qoat_priv priv;
4568         void __user *tmp;
4569
4570         QETH_CARD_TEXT(card, 3, "qoatcmd");
4571
4572         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4573                 rc = -EOPNOTSUPP;
4574                 goto out;
4575         }
4576
4577         if (copy_from_user(&oat_data, udata,
4578             sizeof(struct qeth_query_oat_data))) {
4579                         rc = -EFAULT;
4580                         goto out;
4581         }
4582
4583         priv.buffer_len = oat_data.buffer_len;
4584         priv.response_len = 0;
4585         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4586         if (!priv.buffer) {
4587                 rc = -ENOMEM;
4588                 goto out;
4589         }
4590
4591         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4592                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4593                                    sizeof(struct qeth_query_oat));
4594         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4595         oat_req = &cmd->data.setadapterparms.data.query_oat;
4596         oat_req->subcmd_code = oat_data.command;
4597
4598         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4599                                &priv);
4600         if (!rc) {
4601                 if (is_compat_task())
4602                         tmp = compat_ptr(oat_data.ptr);
4603                 else
4604                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4605
4606                 if (copy_to_user(tmp, priv.buffer,
4607                     priv.response_len)) {
4608                         rc = -EFAULT;
4609                         goto out_free;
4610                 }
4611
4612                 oat_data.response_len = priv.response_len;
4613
4614                 if (copy_to_user(udata, &oat_data,
4615                     sizeof(struct qeth_query_oat_data)))
4616                         rc = -EFAULT;
4617         } else
4618                 if (rc == IPA_RC_FFFF)
4619                         rc = -EFAULT;
4620
4621 out_free:
4622         kfree(priv.buffer);
4623 out:
4624         return rc;
4625 }
4626 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4627
4628 static int qeth_query_card_info_cb(struct qeth_card *card,
4629                                    struct qeth_reply *reply, unsigned long data)
4630 {
4631         struct qeth_ipa_cmd *cmd;
4632         struct qeth_query_card_info *card_info;
4633         struct carrier_info *carrier_info;
4634
4635         QETH_CARD_TEXT(card, 2, "qcrdincb");
4636         carrier_info = (struct carrier_info *)reply->param;
4637         cmd = (struct qeth_ipa_cmd *)data;
4638         card_info = &cmd->data.setadapterparms.data.card_info;
4639         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4640                 carrier_info->card_type = card_info->card_type;
4641                 carrier_info->port_mode = card_info->port_mode;
4642                 carrier_info->port_speed = card_info->port_speed;
4643         }
4644
4645         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4646         return 0;
4647 }
4648
4649 int qeth_query_card_info(struct qeth_card *card,
4650                                 struct carrier_info *carrier_info)
4651 {
4652         struct qeth_cmd_buffer *iob;
4653
4654         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4655         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4656                 return -EOPNOTSUPP;
4657         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4658                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4659         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4660                                         (void *)carrier_info);
4661 }
4662 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4663
4664 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4665 {
4666         switch (card->info.type) {
4667         case QETH_CARD_TYPE_IQD:
4668                 return 2;
4669         default:
4670                 return 0;
4671         }
4672 }
4673
4674 static void qeth_determine_capabilities(struct qeth_card *card)
4675 {
4676         int rc;
4677         int length;
4678         char *prcd;
4679         struct ccw_device *ddev;
4680         int ddev_offline = 0;
4681
4682         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4683         ddev = CARD_DDEV(card);
4684         if (!ddev->online) {
4685                 ddev_offline = 1;
4686                 rc = ccw_device_set_online(ddev);
4687                 if (rc) {
4688                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4689                         goto out;
4690                 }
4691         }
4692
4693         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4694         if (rc) {
4695                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4696                         dev_name(&card->gdev->dev), rc);
4697                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4698                 goto out_offline;
4699         }
4700         qeth_configure_unitaddr(card, prcd);
4701         if (ddev_offline)
4702                 qeth_configure_blkt_default(card, prcd);
4703         kfree(prcd);
4704
4705         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4706         if (rc)
4707                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4708
4709         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4710         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4711         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4712         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4713         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4714             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4715             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4716                 dev_info(&card->gdev->dev,
4717                         "Completion Queueing supported\n");
4718         } else {
4719                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4720         }
4721
4722
4723 out_offline:
4724         if (ddev_offline == 1)
4725                 ccw_device_set_offline(ddev);
4726 out:
4727         return;
4728 }
4729
4730 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4731         struct qdio_buffer **in_sbal_ptrs,
4732         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4733         int i;
4734
4735         if (card->options.cq == QETH_CQ_ENABLED) {
4736                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4737                              (card->qdio.no_in_queues - 1);
4738                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4739                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4740                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4741                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4742                 }
4743
4744                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4745         }
4746 }
4747
4748 static int qeth_qdio_establish(struct qeth_card *card)
4749 {
4750         struct qdio_initialize init_data;
4751         char *qib_param_field;
4752         struct qdio_buffer **in_sbal_ptrs;
4753         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4754         struct qdio_buffer **out_sbal_ptrs;
4755         int i, j, k;
4756         int rc = 0;
4757
4758         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4759
4760         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4761                               GFP_KERNEL);
4762         if (!qib_param_field) {
4763                 rc =  -ENOMEM;
4764                 goto out_free_nothing;
4765         }
4766
4767         qeth_create_qib_param_field(card, qib_param_field);
4768         qeth_create_qib_param_field_blkt(card, qib_param_field);
4769
4770         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4771                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4772                                GFP_KERNEL);
4773         if (!in_sbal_ptrs) {
4774                 rc = -ENOMEM;
4775                 goto out_free_qib_param;
4776         }
4777         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4778                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4779                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4780         }
4781
4782         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4783                                    GFP_KERNEL);
4784         if (!queue_start_poll) {
4785                 rc = -ENOMEM;
4786                 goto out_free_in_sbals;
4787         }
4788         for (i = 0; i < card->qdio.no_in_queues; ++i)
4789                 queue_start_poll[i] = card->discipline->start_poll;
4790
4791         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4792
4793         out_sbal_ptrs =
4794                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4795                         sizeof(void *), GFP_KERNEL);
4796         if (!out_sbal_ptrs) {
4797                 rc = -ENOMEM;
4798                 goto out_free_queue_start_poll;
4799         }
4800         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4801                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4802                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4803                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4804                 }
4805
4806         memset(&init_data, 0, sizeof(struct qdio_initialize));
4807         init_data.cdev                   = CARD_DDEV(card);
4808         init_data.q_format               = qeth_get_qdio_q_format(card);
4809         init_data.qib_param_field_format = 0;
4810         init_data.qib_param_field        = qib_param_field;
4811         init_data.no_input_qs            = card->qdio.no_in_queues;
4812         init_data.no_output_qs           = card->qdio.no_out_queues;
4813         init_data.input_handler          = card->discipline->input_handler;
4814         init_data.output_handler         = card->discipline->output_handler;
4815         init_data.queue_start_poll_array = queue_start_poll;
4816         init_data.int_parm               = (unsigned long) card;
4817         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4818         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4819         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4820         init_data.scan_threshold =
4821                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4822
4823         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4824                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4825                 rc = qdio_allocate(&init_data);
4826                 if (rc) {
4827                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4828                         goto out;
4829                 }
4830                 rc = qdio_establish(&init_data);
4831                 if (rc) {
4832                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4833                         qdio_free(CARD_DDEV(card));
4834                 }
4835         }
4836
4837         switch (card->options.cq) {
4838         case QETH_CQ_ENABLED:
4839                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4840                 break;
4841         case QETH_CQ_DISABLED:
4842                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4843                 break;
4844         default:
4845                 break;
4846         }
4847 out:
4848         kfree(out_sbal_ptrs);
4849 out_free_queue_start_poll:
4850         kfree(queue_start_poll);
4851 out_free_in_sbals:
4852         kfree(in_sbal_ptrs);
4853 out_free_qib_param:
4854         kfree(qib_param_field);
4855 out_free_nothing:
4856         return rc;
4857 }
4858
4859 static void qeth_core_free_card(struct qeth_card *card)
4860 {
4861
4862         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4863         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4864         qeth_clean_channel(&card->read);
4865         qeth_clean_channel(&card->write);
4866         if (card->dev)
4867                 free_netdev(card->dev);
4868         kfree(card->ip_tbd_list);
4869         qeth_free_qdio_buffers(card);
4870         unregister_service_level(&card->qeth_service_level);
4871         kfree(card);
4872 }
4873
4874 void qeth_trace_features(struct qeth_card *card)
4875 {
4876         QETH_CARD_TEXT(card, 2, "features");
4877         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4878         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4879         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4880         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4881         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4882         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4883         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4884 }
4885 EXPORT_SYMBOL_GPL(qeth_trace_features);
4886
4887 static struct ccw_device_id qeth_ids[] = {
4888         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4889                                         .driver_info = QETH_CARD_TYPE_OSD},
4890         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4891                                         .driver_info = QETH_CARD_TYPE_IQD},
4892         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4893                                         .driver_info = QETH_CARD_TYPE_OSN},
4894         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4895                                         .driver_info = QETH_CARD_TYPE_OSM},
4896         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4897                                         .driver_info = QETH_CARD_TYPE_OSX},
4898         {},
4899 };
4900 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4901
4902 static struct ccw_driver qeth_ccw_driver = {
4903         .driver = {
4904                 .owner = THIS_MODULE,
4905                 .name = "qeth",
4906         },
4907         .ids = qeth_ids,
4908         .probe = ccwgroup_probe_ccwdev,
4909         .remove = ccwgroup_remove_ccwdev,
4910 };
4911
4912 int qeth_core_hardsetup_card(struct qeth_card *card)
4913 {
4914         int retries = 3;
4915         int rc;
4916
4917         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4918         atomic_set(&card->force_alloc_skb, 0);
4919         qeth_update_from_chp_desc(card);
4920 retry:
4921         if (retries < 3)
4922                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4923                         dev_name(&card->gdev->dev));
4924         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4925         ccw_device_set_offline(CARD_DDEV(card));
4926         ccw_device_set_offline(CARD_WDEV(card));
4927         ccw_device_set_offline(CARD_RDEV(card));
4928         qdio_free(CARD_DDEV(card));
4929         rc = ccw_device_set_online(CARD_RDEV(card));
4930         if (rc)
4931                 goto retriable;
4932         rc = ccw_device_set_online(CARD_WDEV(card));
4933         if (rc)
4934                 goto retriable;
4935         rc = ccw_device_set_online(CARD_DDEV(card));
4936         if (rc)
4937                 goto retriable;
4938 retriable:
4939         if (rc == -ERESTARTSYS) {
4940                 QETH_DBF_TEXT(SETUP, 2, "break1");
4941                 return rc;
4942         } else if (rc) {
4943                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4944                 if (--retries < 0)
4945                         goto out;
4946                 else
4947                         goto retry;
4948         }
4949         qeth_determine_capabilities(card);
4950         qeth_init_tokens(card);
4951         qeth_init_func_level(card);
4952         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4953         if (rc == -ERESTARTSYS) {
4954                 QETH_DBF_TEXT(SETUP, 2, "break2");
4955                 return rc;
4956         } else if (rc) {
4957                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4958                 if (--retries < 0)
4959                         goto out;
4960                 else
4961                         goto retry;
4962         }
4963         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4964         if (rc == -ERESTARTSYS) {
4965                 QETH_DBF_TEXT(SETUP, 2, "break3");
4966                 return rc;
4967         } else if (rc) {
4968                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4969                 if (--retries < 0)
4970                         goto out;
4971                 else
4972                         goto retry;
4973         }
4974         card->read_or_write_problem = 0;
4975         rc = qeth_mpc_initialize(card);
4976         if (rc) {
4977                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4978                 goto out;
4979         }
4980
4981         card->options.ipa4.supported_funcs = 0;
4982         card->options.adp.supported_funcs = 0;
4983         card->options.sbp.supported_funcs = 0;
4984         card->info.diagass_support = 0;
4985         qeth_query_ipassists(card, QETH_PROT_IPV4);
4986         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4987                 qeth_query_setadapterparms(card);
4988         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4989                 qeth_query_setdiagass(card);
4990         return 0;
4991 out:
4992         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4993                 "an error on the device\n");
4994         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4995                 dev_name(&card->gdev->dev), rc);
4996         return rc;
4997 }
4998 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4999
5000 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5001                 struct qdio_buffer_element *element,
5002                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5003 {
5004         struct page *page = virt_to_page(element->addr);
5005         if (*pskb == NULL) {
5006                 if (qethbuffer->rx_skb) {
5007                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5008                         *pskb = qethbuffer->rx_skb;
5009                         qethbuffer->rx_skb = NULL;
5010                 } else {
5011                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5012                         if (!(*pskb))
5013                                 return -ENOMEM;
5014                 }
5015
5016                 skb_reserve(*pskb, ETH_HLEN);
5017                 if (data_len <= QETH_RX_PULL_LEN) {
5018                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5019                                 data_len);
5020                 } else {
5021                         get_page(page);
5022                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5023                                element->addr + offset, QETH_RX_PULL_LEN);
5024                         skb_fill_page_desc(*pskb, *pfrag, page,
5025                                 offset + QETH_RX_PULL_LEN,
5026                                 data_len - QETH_RX_PULL_LEN);
5027                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5028                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5029                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5030                         (*pfrag)++;
5031                 }
5032         } else {
5033                 get_page(page);
5034                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5035                 (*pskb)->data_len += data_len;
5036                 (*pskb)->len      += data_len;
5037                 (*pskb)->truesize += data_len;
5038                 (*pfrag)++;
5039         }
5040
5041
5042         return 0;
5043 }
5044
5045 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5046                 struct qeth_qdio_buffer *qethbuffer,
5047                 struct qdio_buffer_element **__element, int *__offset,
5048                 struct qeth_hdr **hdr)
5049 {
5050         struct qdio_buffer_element *element = *__element;
5051         struct qdio_buffer *buffer = qethbuffer->buffer;
5052         int offset = *__offset;
5053         struct sk_buff *skb = NULL;
5054         int skb_len = 0;
5055         void *data_ptr;
5056         int data_len;
5057         int headroom = 0;
5058         int use_rx_sg = 0;
5059         int frag = 0;
5060
5061         /* qeth_hdr must not cross element boundaries */
5062         if (element->length < offset + sizeof(struct qeth_hdr)) {
5063                 if (qeth_is_last_sbale(element))
5064                         return NULL;
5065                 element++;
5066                 offset = 0;
5067                 if (element->length < sizeof(struct qeth_hdr))
5068                         return NULL;
5069         }
5070         *hdr = element->addr + offset;
5071
5072         offset += sizeof(struct qeth_hdr);
5073         switch ((*hdr)->hdr.l2.id) {
5074         case QETH_HEADER_TYPE_LAYER2:
5075                 skb_len = (*hdr)->hdr.l2.pkt_length;
5076                 break;
5077         case QETH_HEADER_TYPE_LAYER3:
5078                 skb_len = (*hdr)->hdr.l3.length;
5079                 headroom = ETH_HLEN;
5080                 break;
5081         case QETH_HEADER_TYPE_OSN:
5082                 skb_len = (*hdr)->hdr.osn.pdu_length;
5083                 headroom = sizeof(struct qeth_hdr);
5084                 break;
5085         default:
5086                 break;
5087         }
5088
5089         if (!skb_len)
5090                 return NULL;
5091
5092         if (((skb_len >= card->options.rx_sg_cb) &&
5093              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5094              (!atomic_read(&card->force_alloc_skb))) ||
5095             (card->options.cq == QETH_CQ_ENABLED)) {
5096                 use_rx_sg = 1;
5097         } else {
5098                 skb = dev_alloc_skb(skb_len + headroom);
5099                 if (!skb)
5100                         goto no_mem;
5101                 if (headroom)
5102                         skb_reserve(skb, headroom);
5103         }
5104
5105         data_ptr = element->addr + offset;
5106         while (skb_len) {
5107                 data_len = min(skb_len, (int)(element->length - offset));
5108                 if (data_len) {
5109                         if (use_rx_sg) {
5110                                 if (qeth_create_skb_frag(qethbuffer, element,
5111                                     &skb, offset, &frag, data_len))
5112                                         goto no_mem;
5113                         } else {
5114                                 memcpy(skb_put(skb, data_len), data_ptr,
5115                                         data_len);
5116                         }
5117                 }
5118                 skb_len -= data_len;
5119                 if (skb_len) {
5120                         if (qeth_is_last_sbale(element)) {
5121                                 QETH_CARD_TEXT(card, 4, "unexeob");
5122                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5123                                 dev_kfree_skb_any(skb);
5124                                 card->stats.rx_errors++;
5125                                 return NULL;
5126                         }
5127                         element++;
5128                         offset = 0;
5129                         data_ptr = element->addr;
5130                 } else {
5131                         offset += data_len;
5132                 }
5133         }
5134         *__element = element;
5135         *__offset = offset;
5136         if (use_rx_sg && card->options.performance_stats) {
5137                 card->perf_stats.sg_skbs_rx++;
5138                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5139         }
5140         return skb;
5141 no_mem:
5142         if (net_ratelimit()) {
5143                 QETH_CARD_TEXT(card, 2, "noskbmem");
5144         }
5145         card->stats.rx_dropped++;
5146         return NULL;
5147 }
5148 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5149
5150 static void qeth_unregister_dbf_views(void)
5151 {
5152         int x;
5153         for (x = 0; x < QETH_DBF_INFOS; x++) {
5154                 debug_unregister(qeth_dbf[x].id);
5155                 qeth_dbf[x].id = NULL;
5156         }
5157 }
5158
5159 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5160 {
5161         char dbf_txt_buf[32];
5162         va_list args;
5163
5164         if (!debug_level_enabled(id, level))
5165                 return;
5166         va_start(args, fmt);
5167         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5168         va_end(args);
5169         debug_text_event(id, level, dbf_txt_buf);
5170 }
5171 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5172
5173 static int qeth_register_dbf_views(void)
5174 {
5175         int ret;
5176         int x;
5177
5178         for (x = 0; x < QETH_DBF_INFOS; x++) {
5179                 /* register the areas */
5180                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5181                                                 qeth_dbf[x].pages,
5182                                                 qeth_dbf[x].areas,
5183                                                 qeth_dbf[x].len);
5184                 if (qeth_dbf[x].id == NULL) {
5185                         qeth_unregister_dbf_views();
5186                         return -ENOMEM;
5187                 }
5188
5189                 /* register a view */
5190                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5191                 if (ret) {
5192                         qeth_unregister_dbf_views();
5193                         return ret;
5194                 }
5195
5196                 /* set a passing level */
5197                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5198         }
5199
5200         return 0;
5201 }
5202
5203 int qeth_core_load_discipline(struct qeth_card *card,
5204                 enum qeth_discipline_id discipline)
5205 {
5206         int rc = 0;
5207         mutex_lock(&qeth_mod_mutex);
5208         switch (discipline) {
5209         case QETH_DISCIPLINE_LAYER3:
5210                 card->discipline = try_then_request_module(
5211                         symbol_get(qeth_l3_discipline), "qeth_l3");
5212                 break;
5213         case QETH_DISCIPLINE_LAYER2:
5214                 card->discipline = try_then_request_module(
5215                         symbol_get(qeth_l2_discipline), "qeth_l2");
5216                 break;
5217         }
5218         if (!card->discipline) {
5219                 dev_err(&card->gdev->dev, "There is no kernel module to "
5220                         "support discipline %d\n", discipline);
5221                 rc = -EINVAL;
5222         }
5223         mutex_unlock(&qeth_mod_mutex);
5224         return rc;
5225 }
5226
5227 void qeth_core_free_discipline(struct qeth_card *card)
5228 {
5229         if (card->options.layer2)
5230                 symbol_put(qeth_l2_discipline);
5231         else
5232                 symbol_put(qeth_l3_discipline);
5233         card->discipline = NULL;
5234 }
5235
5236 static const struct device_type qeth_generic_devtype = {
5237         .name = "qeth_generic",
5238         .groups = qeth_generic_attr_groups,
5239 };
5240 static const struct device_type qeth_osn_devtype = {
5241         .name = "qeth_osn",
5242         .groups = qeth_osn_attr_groups,
5243 };
5244
5245 #define DBF_NAME_LEN    20
5246
5247 struct qeth_dbf_entry {
5248         char dbf_name[DBF_NAME_LEN];
5249         debug_info_t *dbf_info;
5250         struct list_head dbf_list;
5251 };
5252
5253 static LIST_HEAD(qeth_dbf_list);
5254 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5255
5256 static debug_info_t *qeth_get_dbf_entry(char *name)
5257 {
5258         struct qeth_dbf_entry *entry;
5259         debug_info_t *rc = NULL;
5260
5261         mutex_lock(&qeth_dbf_list_mutex);
5262         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5263                 if (strcmp(entry->dbf_name, name) == 0) {
5264                         rc = entry->dbf_info;
5265                         break;
5266                 }
5267         }
5268         mutex_unlock(&qeth_dbf_list_mutex);
5269         return rc;
5270 }
5271
5272 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5273 {
5274         struct qeth_dbf_entry *new_entry;
5275
5276         card->debug = debug_register(name, 2, 1, 8);
5277         if (!card->debug) {
5278                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5279                 goto err;
5280         }
5281         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5282                 goto err_dbg;
5283         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5284         if (!new_entry)
5285                 goto err_dbg;
5286         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5287         new_entry->dbf_info = card->debug;
5288         mutex_lock(&qeth_dbf_list_mutex);
5289         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5290         mutex_unlock(&qeth_dbf_list_mutex);
5291
5292         return 0;
5293
5294 err_dbg:
5295         debug_unregister(card->debug);
5296 err:
5297         return -ENOMEM;
5298 }
5299
5300 static void qeth_clear_dbf_list(void)
5301 {
5302         struct qeth_dbf_entry *entry, *tmp;
5303
5304         mutex_lock(&qeth_dbf_list_mutex);
5305         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5306                 list_del(&entry->dbf_list);
5307                 debug_unregister(entry->dbf_info);
5308                 kfree(entry);
5309         }
5310         mutex_unlock(&qeth_dbf_list_mutex);
5311 }
5312
5313 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5314 {
5315         struct qeth_card *card;
5316         struct device *dev;
5317         int rc;
5318         unsigned long flags;
5319         char dbf_name[DBF_NAME_LEN];
5320
5321         QETH_DBF_TEXT(SETUP, 2, "probedev");
5322
5323         dev = &gdev->dev;
5324         if (!get_device(dev))
5325                 return -ENODEV;
5326
5327         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5328
5329         card = qeth_alloc_card();
5330         if (!card) {
5331                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5332                 rc = -ENOMEM;
5333                 goto err_dev;
5334         }
5335
5336         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5337                 dev_name(&gdev->dev));
5338         card->debug = qeth_get_dbf_entry(dbf_name);
5339         if (!card->debug) {
5340                 rc = qeth_add_dbf_entry(card, dbf_name);
5341                 if (rc)
5342                         goto err_card;
5343         }
5344
5345         card->read.ccwdev  = gdev->cdev[0];
5346         card->write.ccwdev = gdev->cdev[1];
5347         card->data.ccwdev  = gdev->cdev[2];
5348         dev_set_drvdata(&gdev->dev, card);
5349         card->gdev = gdev;
5350         gdev->cdev[0]->handler = qeth_irq;
5351         gdev->cdev[1]->handler = qeth_irq;
5352         gdev->cdev[2]->handler = qeth_irq;
5353
5354         rc = qeth_determine_card_type(card);
5355         if (rc) {
5356                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5357                 goto err_card;
5358         }
5359         rc = qeth_setup_card(card);
5360         if (rc) {
5361                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5362                 goto err_card;
5363         }
5364
5365         if (card->info.type == QETH_CARD_TYPE_OSN)
5366                 gdev->dev.type = &qeth_osn_devtype;
5367         else
5368                 gdev->dev.type = &qeth_generic_devtype;
5369
5370         switch (card->info.type) {
5371         case QETH_CARD_TYPE_OSN:
5372         case QETH_CARD_TYPE_OSM:
5373                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5374                 if (rc)
5375                         goto err_card;
5376                 rc = card->discipline->setup(card->gdev);
5377                 if (rc)
5378                         goto err_disc;
5379         case QETH_CARD_TYPE_OSD:
5380         case QETH_CARD_TYPE_OSX:
5381         default:
5382                 break;
5383         }
5384
5385         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5386         list_add_tail(&card->list, &qeth_core_card_list.list);
5387         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5388
5389         qeth_determine_capabilities(card);
5390         return 0;
5391
5392 err_disc:
5393         qeth_core_free_discipline(card);
5394 err_card:
5395         qeth_core_free_card(card);
5396 err_dev:
5397         put_device(dev);
5398         return rc;
5399 }
5400
5401 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5402 {
5403         unsigned long flags;
5404         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5405
5406         QETH_DBF_TEXT(SETUP, 2, "removedv");
5407
5408         if (card->discipline) {
5409                 card->discipline->remove(gdev);
5410                 qeth_core_free_discipline(card);
5411         }
5412
5413         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5414         list_del(&card->list);
5415         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5416         qeth_core_free_card(card);
5417         dev_set_drvdata(&gdev->dev, NULL);
5418         put_device(&gdev->dev);
5419         return;
5420 }
5421
5422 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5423 {
5424         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5425         int rc = 0;
5426         int def_discipline;
5427
5428         if (!card->discipline) {
5429                 if (card->info.type == QETH_CARD_TYPE_IQD)
5430                         def_discipline = QETH_DISCIPLINE_LAYER3;
5431                 else
5432                         def_discipline = QETH_DISCIPLINE_LAYER2;
5433                 rc = qeth_core_load_discipline(card, def_discipline);
5434                 if (rc)
5435                         goto err;
5436                 rc = card->discipline->setup(card->gdev);
5437                 if (rc)
5438                         goto err;
5439         }
5440         rc = card->discipline->set_online(gdev);
5441 err:
5442         return rc;
5443 }
5444
5445 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5446 {
5447         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5448         return card->discipline->set_offline(gdev);
5449 }
5450
5451 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5452 {
5453         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5454         if (card->discipline && card->discipline->shutdown)
5455                 card->discipline->shutdown(gdev);
5456 }
5457
5458 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5459 {
5460         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5461         if (card->discipline && card->discipline->prepare)
5462                 return card->discipline->prepare(gdev);
5463         return 0;
5464 }
5465
5466 static void qeth_core_complete(struct ccwgroup_device *gdev)
5467 {
5468         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5469         if (card->discipline && card->discipline->complete)
5470                 card->discipline->complete(gdev);
5471 }
5472
5473 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5474 {
5475         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5476         if (card->discipline && card->discipline->freeze)
5477                 return card->discipline->freeze(gdev);
5478         return 0;
5479 }
5480
5481 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5482 {
5483         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5484         if (card->discipline && card->discipline->thaw)
5485                 return card->discipline->thaw(gdev);
5486         return 0;
5487 }
5488
5489 static int qeth_core_restore(struct ccwgroup_device *gdev)
5490 {
5491         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5492         if (card->discipline && card->discipline->restore)
5493                 return card->discipline->restore(gdev);
5494         return 0;
5495 }
5496
5497 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5498         .driver = {
5499                 .owner = THIS_MODULE,
5500                 .name = "qeth",
5501         },
5502         .setup = qeth_core_probe_device,
5503         .remove = qeth_core_remove_device,
5504         .set_online = qeth_core_set_online,
5505         .set_offline = qeth_core_set_offline,
5506         .shutdown = qeth_core_shutdown,
5507         .prepare = qeth_core_prepare,
5508         .complete = qeth_core_complete,
5509         .freeze = qeth_core_freeze,
5510         .thaw = qeth_core_thaw,
5511         .restore = qeth_core_restore,
5512 };
5513
5514 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5515                                             const char *buf, size_t count)
5516 {
5517         int err;
5518
5519         err = ccwgroup_create_dev(qeth_core_root_dev,
5520                                   &qeth_core_ccwgroup_driver, 3, buf);
5521
5522         return err ? err : count;
5523 }
5524 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5525
5526 static struct attribute *qeth_drv_attrs[] = {
5527         &driver_attr_group.attr,
5528         NULL,
5529 };
5530 static struct attribute_group qeth_drv_attr_group = {
5531         .attrs = qeth_drv_attrs,
5532 };
5533 static const struct attribute_group *qeth_drv_attr_groups[] = {
5534         &qeth_drv_attr_group,
5535         NULL,
5536 };
5537
5538 static struct {
5539         const char str[ETH_GSTRING_LEN];
5540 } qeth_ethtool_stats_keys[] = {
5541 /*  0 */{"rx skbs"},
5542         {"rx buffers"},
5543         {"tx skbs"},
5544         {"tx buffers"},
5545         {"tx skbs no packing"},
5546         {"tx buffers no packing"},
5547         {"tx skbs packing"},
5548         {"tx buffers packing"},
5549         {"tx sg skbs"},
5550         {"tx sg frags"},
5551 /* 10 */{"rx sg skbs"},
5552         {"rx sg frags"},
5553         {"rx sg page allocs"},
5554         {"tx large kbytes"},
5555         {"tx large count"},
5556         {"tx pk state ch n->p"},
5557         {"tx pk state ch p->n"},
5558         {"tx pk watermark low"},
5559         {"tx pk watermark high"},
5560         {"queue 0 buffer usage"},
5561 /* 20 */{"queue 1 buffer usage"},
5562         {"queue 2 buffer usage"},
5563         {"queue 3 buffer usage"},
5564         {"rx poll time"},
5565         {"rx poll count"},
5566         {"rx do_QDIO time"},
5567         {"rx do_QDIO count"},
5568         {"tx handler time"},
5569         {"tx handler count"},
5570         {"tx time"},
5571 /* 30 */{"tx count"},
5572         {"tx do_QDIO time"},
5573         {"tx do_QDIO count"},
5574         {"tx csum"},
5575         {"tx lin"},
5576         {"cq handler count"},
5577         {"cq handler time"}
5578 };
5579
5580 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5581 {
5582         switch (stringset) {
5583         case ETH_SS_STATS:
5584                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5585         default:
5586                 return -EINVAL;
5587         }
5588 }
5589 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5590
5591 void qeth_core_get_ethtool_stats(struct net_device *dev,
5592                 struct ethtool_stats *stats, u64 *data)
5593 {
5594         struct qeth_card *card = dev->ml_priv;
5595         data[0] = card->stats.rx_packets -
5596                                 card->perf_stats.initial_rx_packets;
5597         data[1] = card->perf_stats.bufs_rec;
5598         data[2] = card->stats.tx_packets -
5599                                 card->perf_stats.initial_tx_packets;
5600         data[3] = card->perf_stats.bufs_sent;
5601         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5602                         - card->perf_stats.skbs_sent_pack;
5603         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5604         data[6] = card->perf_stats.skbs_sent_pack;
5605         data[7] = card->perf_stats.bufs_sent_pack;
5606         data[8] = card->perf_stats.sg_skbs_sent;
5607         data[9] = card->perf_stats.sg_frags_sent;
5608         data[10] = card->perf_stats.sg_skbs_rx;
5609         data[11] = card->perf_stats.sg_frags_rx;
5610         data[12] = card->perf_stats.sg_alloc_page_rx;
5611         data[13] = (card->perf_stats.large_send_bytes >> 10);
5612         data[14] = card->perf_stats.large_send_cnt;
5613         data[15] = card->perf_stats.sc_dp_p;
5614         data[16] = card->perf_stats.sc_p_dp;
5615         data[17] = QETH_LOW_WATERMARK_PACK;
5616         data[18] = QETH_HIGH_WATERMARK_PACK;
5617         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5618         data[20] = (card->qdio.no_out_queues > 1) ?
5619                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5620         data[21] = (card->qdio.no_out_queues > 2) ?
5621                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5622         data[22] = (card->qdio.no_out_queues > 3) ?
5623                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5624         data[23] = card->perf_stats.inbound_time;
5625         data[24] = card->perf_stats.inbound_cnt;
5626         data[25] = card->perf_stats.inbound_do_qdio_time;
5627         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5628         data[27] = card->perf_stats.outbound_handler_time;
5629         data[28] = card->perf_stats.outbound_handler_cnt;
5630         data[29] = card->perf_stats.outbound_time;
5631         data[30] = card->perf_stats.outbound_cnt;
5632         data[31] = card->perf_stats.outbound_do_qdio_time;
5633         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5634         data[33] = card->perf_stats.tx_csum;
5635         data[34] = card->perf_stats.tx_lin;
5636         data[35] = card->perf_stats.cq_cnt;
5637         data[36] = card->perf_stats.cq_time;
5638 }
5639 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5640
5641 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5642 {
5643         switch (stringset) {
5644         case ETH_SS_STATS:
5645                 memcpy(data, &qeth_ethtool_stats_keys,
5646                         sizeof(qeth_ethtool_stats_keys));
5647                 break;
5648         default:
5649                 WARN_ON(1);
5650                 break;
5651         }
5652 }
5653 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5654
5655 void qeth_core_get_drvinfo(struct net_device *dev,
5656                 struct ethtool_drvinfo *info)
5657 {
5658         struct qeth_card *card = dev->ml_priv;
5659
5660         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5661                 sizeof(info->driver));
5662         strlcpy(info->version, "1.0", sizeof(info->version));
5663         strlcpy(info->fw_version, card->info.mcl_level,
5664                 sizeof(info->fw_version));
5665         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5666                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5667 }
5668 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5669
5670 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5671 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5672 /* Always advertize and support all speeds up to specified, and only one     */
5673 /* specified port type.                                                      */
5674 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5675                                 int maxspeed, int porttype)
5676 {
5677         int port_sup, port_adv, spd_sup, spd_adv;
5678
5679         switch (porttype) {
5680         case PORT_TP:
5681                 port_sup = SUPPORTED_TP;
5682                 port_adv = ADVERTISED_TP;
5683                 break;
5684         case PORT_FIBRE:
5685                 port_sup = SUPPORTED_FIBRE;
5686                 port_adv = ADVERTISED_FIBRE;
5687                 break;
5688         default:
5689                 port_sup = SUPPORTED_TP;
5690                 port_adv = ADVERTISED_TP;
5691                 WARN_ON_ONCE(1);
5692         }
5693
5694         /* "Fallthrough" case'es ordered from high to low result in setting  */
5695         /* flags cumulatively, starting from the specified speed and down to */
5696         /* the lowest possible.                                              */
5697         spd_sup = 0;
5698         spd_adv = 0;
5699         switch (maxspeed) {
5700         case SPEED_10000:
5701                 spd_sup |= SUPPORTED_10000baseT_Full;
5702                 spd_adv |= ADVERTISED_10000baseT_Full;
5703         case SPEED_1000:
5704                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5705                 spd_adv |= ADVERTISED_1000baseT_Half |
5706                                                 ADVERTISED_1000baseT_Full;
5707         case SPEED_100:
5708                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5709                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5710         case SPEED_10:
5711                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5712                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5713         break;
5714         default:
5715                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5716                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5717                 WARN_ON_ONCE(1);
5718         }
5719         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5720         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5721 }
5722
5723 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5724                                         struct ethtool_cmd *ecmd)
5725 {
5726         struct qeth_card *card = netdev->ml_priv;
5727         enum qeth_link_types link_type;
5728         struct carrier_info carrier_info;
5729         u32 speed;
5730
5731         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5732                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5733         else
5734                 link_type = card->info.link_type;
5735
5736         ecmd->transceiver = XCVR_INTERNAL;
5737         ecmd->duplex = DUPLEX_FULL;
5738         ecmd->autoneg = AUTONEG_ENABLE;
5739
5740         switch (link_type) {
5741         case QETH_LINK_TYPE_FAST_ETH:
5742         case QETH_LINK_TYPE_LANE_ETH100:
5743                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5744                 speed = SPEED_100;
5745                 ecmd->port = PORT_TP;
5746                 break;
5747
5748         case QETH_LINK_TYPE_GBIT_ETH:
5749         case QETH_LINK_TYPE_LANE_ETH1000:
5750                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5751                 speed = SPEED_1000;
5752                 ecmd->port = PORT_FIBRE;
5753                 break;
5754
5755         case QETH_LINK_TYPE_10GBIT_ETH:
5756                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5757                 speed = SPEED_10000;
5758                 ecmd->port = PORT_FIBRE;
5759                 break;
5760
5761         default:
5762                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5763                 speed = SPEED_10;
5764                 ecmd->port = PORT_TP;
5765         }
5766         ethtool_cmd_speed_set(ecmd, speed);
5767
5768         /* Check if we can obtain more accurate information.     */
5769         /* If QUERY_CARD_INFO command is not supported or fails, */
5770         /* just return the heuristics that was filled above.     */
5771         if (qeth_query_card_info(card, &carrier_info) != 0)
5772                 return 0;
5773
5774         netdev_dbg(netdev,
5775         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5776                         carrier_info.card_type,
5777                         carrier_info.port_mode,
5778                         carrier_info.port_speed);
5779
5780         /* Update attributes for which we've obtained more authoritative */
5781         /* information, leave the rest the way they where filled above.  */
5782         switch (carrier_info.card_type) {
5783         case CARD_INFO_TYPE_1G_COPPER_A:
5784         case CARD_INFO_TYPE_1G_COPPER_B:
5785                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5786                 ecmd->port = PORT_TP;
5787                 break;
5788         case CARD_INFO_TYPE_1G_FIBRE_A:
5789         case CARD_INFO_TYPE_1G_FIBRE_B:
5790                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5791                 ecmd->port = PORT_FIBRE;
5792                 break;
5793         case CARD_INFO_TYPE_10G_FIBRE_A:
5794         case CARD_INFO_TYPE_10G_FIBRE_B:
5795                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5796                 ecmd->port = PORT_FIBRE;
5797                 break;
5798         }
5799
5800         switch (carrier_info.port_mode) {
5801         case CARD_INFO_PORTM_FULLDUPLEX:
5802                 ecmd->duplex = DUPLEX_FULL;
5803                 break;
5804         case CARD_INFO_PORTM_HALFDUPLEX:
5805                 ecmd->duplex = DUPLEX_HALF;
5806                 break;
5807         }
5808
5809         switch (carrier_info.port_speed) {
5810         case CARD_INFO_PORTS_10M:
5811                 speed = SPEED_10;
5812                 break;
5813         case CARD_INFO_PORTS_100M:
5814                 speed = SPEED_100;
5815                 break;
5816         case CARD_INFO_PORTS_1G:
5817                 speed = SPEED_1000;
5818                 break;
5819         case CARD_INFO_PORTS_10G:
5820                 speed = SPEED_10000;
5821                 break;
5822         }
5823         ethtool_cmd_speed_set(ecmd, speed);
5824
5825         return 0;
5826 }
5827 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5828
5829 static int __init qeth_core_init(void)
5830 {
5831         int rc;
5832
5833         pr_info("loading core functions\n");
5834         INIT_LIST_HEAD(&qeth_core_card_list.list);
5835         INIT_LIST_HEAD(&qeth_dbf_list);
5836         rwlock_init(&qeth_core_card_list.rwlock);
5837         mutex_init(&qeth_mod_mutex);
5838
5839         qeth_wq = create_singlethread_workqueue("qeth_wq");
5840
5841         rc = qeth_register_dbf_views();
5842         if (rc)
5843                 goto out_err;
5844         qeth_core_root_dev = root_device_register("qeth");
5845         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
5846         if (rc)
5847                 goto register_err;
5848         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5849                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5850         if (!qeth_core_header_cache) {
5851                 rc = -ENOMEM;
5852                 goto slab_err;
5853         }
5854         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5855                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5856         if (!qeth_qdio_outbuf_cache) {
5857                 rc = -ENOMEM;
5858                 goto cqslab_err;
5859         }
5860         rc = ccw_driver_register(&qeth_ccw_driver);
5861         if (rc)
5862                 goto ccw_err;
5863         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5864         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5865         if (rc)
5866                 goto ccwgroup_err;
5867
5868         return 0;
5869
5870 ccwgroup_err:
5871         ccw_driver_unregister(&qeth_ccw_driver);
5872 ccw_err:
5873         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5874 cqslab_err:
5875         kmem_cache_destroy(qeth_core_header_cache);
5876 slab_err:
5877         root_device_unregister(qeth_core_root_dev);
5878 register_err:
5879         qeth_unregister_dbf_views();
5880 out_err:
5881         pr_err("Initializing the qeth device driver failed\n");
5882         return rc;
5883 }
5884
5885 static void __exit qeth_core_exit(void)
5886 {
5887         qeth_clear_dbf_list();
5888         destroy_workqueue(qeth_wq);
5889         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5890         ccw_driver_unregister(&qeth_ccw_driver);
5891         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5892         kmem_cache_destroy(qeth_core_header_cache);
5893         root_device_unregister(qeth_core_root_dev);
5894         qeth_unregister_dbf_views();
5895         pr_info("core functions removed\n");
5896 }
5897
5898 module_init(qeth_core_init);
5899 module_exit(qeth_core_exit);
5900 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5901 MODULE_DESCRIPTION("qeth core functions");
5902 MODULE_LICENSE("GPL");