drivers/s390/net/qeth_core_main.c

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