Pileus Git - ~andy/linux/blob - 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                 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1287         kfree(card->qdio.in_q);
1288         card->qdio.in_q = NULL;
1289         /* inbound buffer pool */
1290         qeth_free_buffer_pool(card);
1291         /* free outbound qdio_qs */
1292         if (card->qdio.out_qs) {
1293                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1294                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1295                         kfree(card->qdio.out_qs[i]);
1296                 }
1297                 kfree(card->qdio.out_qs);
1298                 card->qdio.out_qs = NULL;
1299         }
1300 }
1301
1302 static void qeth_clean_channel(struct qeth_channel *channel)
1303 {
1304         int cnt;
1305
1306         QETH_DBF_TEXT(SETUP, 2, "freech");
1307         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1308                 kfree(channel->iob[cnt].data);
1309 }
1310
1311 static void qeth_set_single_write_queues(struct qeth_card *card)
1312 {
1313         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1314             (card->qdio.no_out_queues == 4))
1315                 qeth_free_qdio_buffers(card);
1316
1317         card->qdio.no_out_queues = 1;
1318         if (card->qdio.default_out_queue != 0)
1319                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1320
1321         card->qdio.default_out_queue = 0;
1322 }
1323
1324 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1325 {
1326         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1327             (card->qdio.no_out_queues == 1)) {
1328                 qeth_free_qdio_buffers(card);
1329                 card->qdio.default_out_queue = 2;
1330         }
1331         card->qdio.no_out_queues = 4;
1332 }
1333
1334 static void qeth_update_from_chp_desc(struct qeth_card *card)
1335 {
1336         struct ccw_device *ccwdev;
1337         struct channelPath_dsc {
1338                 u8 flags;
1339                 u8 lsn;
1340                 u8 desc;
1341                 u8 chpid;
1342                 u8 swla;
1343                 u8 zeroes;
1344                 u8 chla;
1345                 u8 chpp;
1346         } *chp_dsc;
1347
1348         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1349
1350         ccwdev = card->data.ccwdev;
1351         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1352         if (!chp_dsc)
1353                 goto out;
1354
1355         card->info.func_level = 0x4100 + chp_dsc->desc;
1356         if (card->info.type == QETH_CARD_TYPE_IQD)
1357                 goto out;
1358
1359         /* CHPP field bit 6 == 1 -> single queue */
1360         if ((chp_dsc->chpp & 0x02) == 0x02)
1361                 qeth_set_single_write_queues(card);
1362         else
1363                 qeth_set_multiple_write_queues(card);
1364 out:
1365         kfree(chp_dsc);
1366         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1367         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1368 }
1369
1370 static void qeth_init_qdio_info(struct qeth_card *card)
1371 {
1372         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1373         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1374         /* inbound */
1375         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1376         if (card->info.type == QETH_CARD_TYPE_IQD)
1377                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1378         else
1379                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1380         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1381         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1382         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1383 }
1384
1385 static void qeth_set_intial_options(struct qeth_card *card)
1386 {
1387         card->options.route4.type = NO_ROUTER;
1388         card->options.route6.type = NO_ROUTER;
1389         card->options.fake_broadcast = 0;
1390         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1391         card->options.performance_stats = 0;
1392         card->options.rx_sg_cb = QETH_RX_SG_CB;
1393         card->options.isolation = ISOLATION_MODE_NONE;
1394         card->options.cq = QETH_CQ_DISABLED;
1395 }
1396
1397 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1398 {
1399         unsigned long flags;
1400         int rc = 0;
1401
1402         spin_lock_irqsave(&card->thread_mask_lock, flags);
1403         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1404                         (u8) card->thread_start_mask,
1405                         (u8) card->thread_allowed_mask,
1406                         (u8) card->thread_running_mask);
1407         rc = (card->thread_start_mask & thread);
1408         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1409         return rc;
1410 }
1411
1412 static void qeth_start_kernel_thread(struct work_struct *work)
1413 {
1414         struct task_struct *ts;
1415         struct qeth_card *card = container_of(work, struct qeth_card,
1416                                         kernel_thread_starter);
1417         QETH_CARD_TEXT(card , 2, "strthrd");
1418
1419         if (card->read.state != CH_STATE_UP &&
1420             card->write.state != CH_STATE_UP)
1421                 return;
1422         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1423                 ts = kthread_run(card->discipline->recover, (void *)card,
1424                                 "qeth_recover");
1425                 if (IS_ERR(ts)) {
1426                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1427                         qeth_clear_thread_running_bit(card,
1428                                 QETH_RECOVER_THREAD);
1429                 }
1430         }
1431 }
1432
1433 static int qeth_setup_card(struct qeth_card *card)
1434 {
1435
1436         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1437         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1438
1439         card->read.state  = CH_STATE_DOWN;
1440         card->write.state = CH_STATE_DOWN;
1441         card->data.state  = CH_STATE_DOWN;
1442         card->state = CARD_STATE_DOWN;
1443         card->lan_online = 0;
1444         card->read_or_write_problem = 0;
1445         card->dev = NULL;
1446         spin_lock_init(&card->vlanlock);
1447         spin_lock_init(&card->mclock);
1448         spin_lock_init(&card->lock);
1449         spin_lock_init(&card->ip_lock);
1450         spin_lock_init(&card->thread_mask_lock);
1451         mutex_init(&card->conf_mutex);
1452         mutex_init(&card->discipline_mutex);
1453         card->thread_start_mask = 0;
1454         card->thread_allowed_mask = 0;
1455         card->thread_running_mask = 0;
1456         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1457         INIT_LIST_HEAD(&card->ip_list);
1458         INIT_LIST_HEAD(card->ip_tbd_list);
1459         INIT_LIST_HEAD(&card->cmd_waiter_list);
1460         init_waitqueue_head(&card->wait_q);
1461         /* initial options */
1462         qeth_set_intial_options(card);
1463         /* IP address takeover */
1464         INIT_LIST_HEAD(&card->ipato.entries);
1465         card->ipato.enabled = 0;
1466         card->ipato.invert4 = 0;
1467         card->ipato.invert6 = 0;
1468         /* init QDIO stuff */
1469         qeth_init_qdio_info(card);
1470         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1471         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1472         return 0;
1473 }
1474
1475 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1476 {
1477         struct qeth_card *card = container_of(slr, struct qeth_card,
1478                                         qeth_service_level);
1479         if (card->info.mcl_level[0])
1480                 seq_printf(m, "qeth: %s firmware level %s\n",
1481                         CARD_BUS_ID(card), card->info.mcl_level);
1482 }
1483
1484 static struct qeth_card *qeth_alloc_card(void)
1485 {
1486         struct qeth_card *card;
1487
1488         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1489         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1490         if (!card)
1491                 goto out;
1492         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1493         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1494         if (!card->ip_tbd_list) {
1495                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1496                 goto out_card;
1497         }
1498         if (qeth_setup_channel(&card->read))
1499                 goto out_ip;
1500         if (qeth_setup_channel(&card->write))
1501                 goto out_channel;
1502         card->options.layer2 = -1;
1503         card->qeth_service_level.seq_print = qeth_core_sl_print;
1504         register_service_level(&card->qeth_service_level);
1505         return card;
1506
1507 out_channel:
1508         qeth_clean_channel(&card->read);
1509 out_ip:
1510         kfree(card->ip_tbd_list);
1511 out_card:
1512         kfree(card);
1513 out:
1514         return NULL;
1515 }
1516
1517 static int qeth_determine_card_type(struct qeth_card *card)
1518 {
1519         int i = 0;
1520
1521         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1522
1523         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1524         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1525         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1526                 if ((CARD_RDEV(card)->id.dev_type ==
1527                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1528                     (CARD_RDEV(card)->id.dev_model ==
1529                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1530                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1531                         card->qdio.no_out_queues =
1532                                 known_devices[i][QETH_QUEUE_NO_IND];
1533                         card->qdio.no_in_queues = 1;
1534                         card->info.is_multicast_different =
1535                                 known_devices[i][QETH_MULTICAST_IND];
1536                         qeth_update_from_chp_desc(card);
1537                         return 0;
1538                 }
1539                 i++;
1540         }
1541         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1542         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1543                 "unknown type\n");
1544         return -ENOENT;
1545 }
1546
1547 static int qeth_clear_channel(struct qeth_channel *channel)
1548 {
1549         unsigned long flags;
1550         struct qeth_card *card;
1551         int rc;
1552
1553         card = CARD_FROM_CDEV(channel->ccwdev);
1554         QETH_CARD_TEXT(card, 3, "clearch");
1555         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1556         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1557         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1558
1559         if (rc)
1560                 return rc;
1561         rc = wait_event_interruptible_timeout(card->wait_q,
1562                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1563         if (rc == -ERESTARTSYS)
1564                 return rc;
1565         if (channel->state != CH_STATE_STOPPED)
1566                 return -ETIME;
1567         channel->state = CH_STATE_DOWN;
1568         return 0;
1569 }
1570
1571 static int qeth_halt_channel(struct qeth_channel *channel)
1572 {
1573         unsigned long flags;
1574         struct qeth_card *card;
1575         int rc;
1576
1577         card = CARD_FROM_CDEV(channel->ccwdev);
1578         QETH_CARD_TEXT(card, 3, "haltch");
1579         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1580         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1581         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1582
1583         if (rc)
1584                 return rc;
1585         rc = wait_event_interruptible_timeout(card->wait_q,
1586                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1587         if (rc == -ERESTARTSYS)
1588                 return rc;
1589         if (channel->state != CH_STATE_HALTED)
1590                 return -ETIME;
1591         return 0;
1592 }
1593
1594 static int qeth_halt_channels(struct qeth_card *card)
1595 {
1596         int rc1 = 0, rc2 = 0, rc3 = 0;
1597
1598         QETH_CARD_TEXT(card, 3, "haltchs");
1599         rc1 = qeth_halt_channel(&card->read);
1600         rc2 = qeth_halt_channel(&card->write);
1601         rc3 = qeth_halt_channel(&card->data);
1602         if (rc1)
1603                 return rc1;
1604         if (rc2)
1605                 return rc2;
1606         return rc3;
1607 }
1608
1609 static int qeth_clear_channels(struct qeth_card *card)
1610 {
1611         int rc1 = 0, rc2 = 0, rc3 = 0;
1612
1613         QETH_CARD_TEXT(card, 3, "clearchs");
1614         rc1 = qeth_clear_channel(&card->read);
1615         rc2 = qeth_clear_channel(&card->write);
1616         rc3 = qeth_clear_channel(&card->data);
1617         if (rc1)
1618                 return rc1;
1619         if (rc2)
1620                 return rc2;
1621         return rc3;
1622 }
1623
1624 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1625 {
1626         int rc = 0;
1627
1628         QETH_CARD_TEXT(card, 3, "clhacrd");
1629
1630         if (halt)
1631                 rc = qeth_halt_channels(card);
1632         if (rc)
1633                 return rc;
1634         return qeth_clear_channels(card);
1635 }
1636
1637 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1638 {
1639         int rc = 0;
1640
1641         QETH_CARD_TEXT(card, 3, "qdioclr");
1642         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1643                 QETH_QDIO_CLEANING)) {
1644         case QETH_QDIO_ESTABLISHED:
1645                 if (card->info.type == QETH_CARD_TYPE_IQD)
1646                         rc = qdio_shutdown(CARD_DDEV(card),
1647                                 QDIO_FLAG_CLEANUP_USING_HALT);
1648                 else
1649                         rc = qdio_shutdown(CARD_DDEV(card),
1650                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1651                 if (rc)
1652                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1653                 qdio_free(CARD_DDEV(card));
1654                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1655                 break;
1656         case QETH_QDIO_CLEANING:
1657                 return rc;
1658         default:
1659                 break;
1660         }
1661         rc = qeth_clear_halt_card(card, use_halt);
1662         if (rc)
1663                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1664         card->state = CARD_STATE_DOWN;
1665         return rc;
1666 }
1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1668
1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1670                                int *length)
1671 {
1672         struct ciw *ciw;
1673         char *rcd_buf;
1674         int ret;
1675         struct qeth_channel *channel = &card->data;
1676         unsigned long flags;
1677
1678         /*
1679          * scan for RCD command in extended SenseID data
1680          */
1681         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1682         if (!ciw || ciw->cmd == 0)
1683                 return -EOPNOTSUPP;
1684         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1685         if (!rcd_buf)
1686                 return -ENOMEM;
1687
1688         channel->ccw.cmd_code = ciw->cmd;
1689         channel->ccw.cda = (__u32) __pa(rcd_buf);
1690         channel->ccw.count = ciw->count;
1691         channel->ccw.flags = CCW_FLAG_SLI;
1692         channel->state = CH_STATE_RCD;
1693         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1694         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1695                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1696                                        QETH_RCD_TIMEOUT);
1697         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1698         if (!ret)
1699                 wait_event(card->wait_q,
1700                            (channel->state == CH_STATE_RCD_DONE ||
1701                             channel->state == CH_STATE_DOWN));
1702         if (channel->state == CH_STATE_DOWN)
1703                 ret = -EIO;
1704         else
1705                 channel->state = CH_STATE_DOWN;
1706         if (ret) {
1707                 kfree(rcd_buf);
1708                 *buffer = NULL;
1709                 *length = 0;
1710         } else {
1711                 *length = ciw->count;
1712                 *buffer = rcd_buf;
1713         }
1714         return ret;
1715 }
1716
1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1718 {
1719         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1720         card->info.chpid = prcd[30];
1721         card->info.unit_addr2 = prcd[31];
1722         card->info.cula = prcd[63];
1723         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1724                                (prcd[0x11] == _ascebc['M']));
1725 }
1726
1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1728 {
1729         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1730
1731         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1732             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1733                 card->info.blkt.time_total = 250;
1734                 card->info.blkt.inter_packet = 5;
1735                 card->info.blkt.inter_packet_jumbo = 15;
1736         } else {
1737                 card->info.blkt.time_total = 0;
1738                 card->info.blkt.inter_packet = 0;
1739                 card->info.blkt.inter_packet_jumbo = 0;
1740         }
1741 }
1742
1743 static void qeth_init_tokens(struct qeth_card *card)
1744 {
1745         card->token.issuer_rm_w = 0x00010103UL;
1746         card->token.cm_filter_w = 0x00010108UL;
1747         card->token.cm_connection_w = 0x0001010aUL;
1748         card->token.ulp_filter_w = 0x0001010bUL;
1749         card->token.ulp_connection_w = 0x0001010dUL;
1750 }
1751
1752 static void qeth_init_func_level(struct qeth_card *card)
1753 {
1754         switch (card->info.type) {
1755         case QETH_CARD_TYPE_IQD:
1756                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1757                 break;
1758         case QETH_CARD_TYPE_OSD:
1759         case QETH_CARD_TYPE_OSN:
1760                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1761                 break;
1762         default:
1763                 break;
1764         }
1765 }
1766
1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1768                 void (*idx_reply_cb)(struct qeth_channel *,
1769                         struct qeth_cmd_buffer *))
1770 {
1771         struct qeth_cmd_buffer *iob;
1772         unsigned long flags;
1773         int rc;
1774         struct qeth_card *card;
1775
1776         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1777         card = CARD_FROM_CDEV(channel->ccwdev);
1778         iob = qeth_get_buffer(channel);
1779         iob->callback = idx_reply_cb;
1780         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1781         channel->ccw.count = QETH_BUFSIZE;
1782         channel->ccw.cda = (__u32) __pa(iob->data);
1783
1784         wait_event(card->wait_q,
1785                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1786         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1787         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1788         rc = ccw_device_start(channel->ccwdev,
1789                               &channel->ccw, (addr_t) iob, 0, 0);
1790         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1791
1792         if (rc) {
1793                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1794                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1795                 atomic_set(&channel->irq_pending, 0);
1796                 wake_up(&card->wait_q);
1797                 return rc;
1798         }
1799         rc = wait_event_interruptible_timeout(card->wait_q,
1800                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1801         if (rc == -ERESTARTSYS)
1802                 return rc;
1803         if (channel->state != CH_STATE_UP) {
1804                 rc = -ETIME;
1805                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1806                 qeth_clear_cmd_buffers(channel);
1807         } else
1808                 rc = 0;
1809         return rc;
1810 }
1811
1812 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1813                 void (*idx_reply_cb)(struct qeth_channel *,
1814                         struct qeth_cmd_buffer *))
1815 {
1816         struct qeth_card *card;
1817         struct qeth_cmd_buffer *iob;
1818         unsigned long flags;
1819         __u16 temp;
1820         __u8 tmp;
1821         int rc;
1822         struct ccw_dev_id temp_devid;
1823
1824         card = CARD_FROM_CDEV(channel->ccwdev);
1825
1826         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1827
1828         iob = qeth_get_buffer(channel);
1829         iob->callback = idx_reply_cb;
1830         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1831         channel->ccw.count = IDX_ACTIVATE_SIZE;
1832         channel->ccw.cda = (__u32) __pa(iob->data);
1833         if (channel == &card->write) {
1834                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1835                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1836                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1837                 card->seqno.trans_hdr++;
1838         } else {
1839                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1840                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1841                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1842         }
1843         tmp = ((__u8)card->info.portno) | 0x80;
1844         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1845         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1846                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1847         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1848                &card->info.func_level, sizeof(__u16));
1849         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1850         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1851         temp = (card->info.cula << 8) + card->info.unit_addr2;
1852         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1853
1854         wait_event(card->wait_q,
1855                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1856         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1857         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1858         rc = ccw_device_start(channel->ccwdev,
1859                               &channel->ccw, (addr_t) iob, 0, 0);
1860         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1861
1862         if (rc) {
1863                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1864                         rc);
1865                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1866                 atomic_set(&channel->irq_pending, 0);
1867                 wake_up(&card->wait_q);
1868                 return rc;
1869         }
1870         rc = wait_event_interruptible_timeout(card->wait_q,
1871                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1872         if (rc == -ERESTARTSYS)
1873                 return rc;
1874         if (channel->state != CH_STATE_ACTIVATING) {
1875                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1876                         " failed to recover an error on the device\n");
1877                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1878                         dev_name(&channel->ccwdev->dev));
1879                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1880                 qeth_clear_cmd_buffers(channel);
1881                 return -ETIME;
1882         }
1883         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1884 }
1885
1886 static int qeth_peer_func_level(int level)
1887 {
1888         if ((level & 0xff) == 8)
1889                 return (level & 0xff) + 0x400;
1890         if (((level >> 8) & 3) == 1)
1891                 return (level & 0xff) + 0x200;
1892         return level;
1893 }
1894
1895 static void qeth_idx_write_cb(struct qeth_channel *channel,
1896                 struct qeth_cmd_buffer *iob)
1897 {
1898         struct qeth_card *card;
1899         __u16 temp;
1900
1901         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1902
1903         if (channel->state == CH_STATE_DOWN) {
1904                 channel->state = CH_STATE_ACTIVATING;
1905                 goto out;
1906         }
1907         card = CARD_FROM_CDEV(channel->ccwdev);
1908
1909         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1910                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1911                         dev_err(&card->write.ccwdev->dev,
1912                                 "The adapter is used exclusively by another "
1913                                 "host\n");
1914                 else
1915                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1916                                 " negative reply\n",
1917                                 dev_name(&card->write.ccwdev->dev));
1918                 goto out;
1919         }
1920         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1921         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1922                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1923                         "function level mismatch (sent: 0x%x, received: "
1924                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1925                         card->info.func_level, temp);
1926                 goto out;
1927         }
1928         channel->state = CH_STATE_UP;
1929 out:
1930         qeth_release_buffer(channel, iob);
1931 }
1932
1933 static void qeth_idx_read_cb(struct qeth_channel *channel,
1934                 struct qeth_cmd_buffer *iob)
1935 {
1936         struct qeth_card *card;
1937         __u16 temp;
1938
1939         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1940         if (channel->state == CH_STATE_DOWN) {
1941                 channel->state = CH_STATE_ACTIVATING;
1942                 goto out;
1943         }
1944
1945         card = CARD_FROM_CDEV(channel->ccwdev);
1946         if (qeth_check_idx_response(card, iob->data))
1947                         goto out;
1948
1949         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1950                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1951                 case QETH_IDX_ACT_ERR_EXCL:
1952                         dev_err(&card->write.ccwdev->dev,
1953                                 "The adapter is used exclusively by another "
1954                                 "host\n");
1955                         break;
1956                 case QETH_IDX_ACT_ERR_AUTH:
1957                 case QETH_IDX_ACT_ERR_AUTH_USER:
1958                         dev_err(&card->read.ccwdev->dev,
1959                                 "Setting the device online failed because of "
1960                                 "insufficient authorization\n");
1961                         break;
1962                 default:
1963                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1964                                 " negative reply\n",
1965                                 dev_name(&card->read.ccwdev->dev));
1966                 }
1967                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1968                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1969                 goto out;
1970         }
1971
1972 /**
1973  *  * temporary fix for microcode bug
1974  *   * to revert it,replace OR by AND
1975  *    */
1976         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1977              (card->info.type == QETH_CARD_TYPE_OSD))
1978                 card->info.portname_required = 1;
1979
1980         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1981         if (temp != qeth_peer_func_level(card->info.func_level)) {
1982                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1983                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1984                         dev_name(&card->read.ccwdev->dev),
1985                         card->info.func_level, temp);
1986                 goto out;
1987         }
1988         memcpy(&card->token.issuer_rm_r,
1989                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1990                QETH_MPC_TOKEN_LENGTH);
1991         memcpy(&card->info.mcl_level[0],
1992                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1993         channel->state = CH_STATE_UP;
1994 out:
1995         qeth_release_buffer(channel, iob);
1996 }
1997
1998 void qeth_prepare_control_data(struct qeth_card *card, int len,
1999                 struct qeth_cmd_buffer *iob)
2000 {
2001         qeth_setup_ccw(&card->write, iob->data, len);
2002         iob->callback = qeth_release_buffer;
2003
2004         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2005                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2006         card->seqno.trans_hdr++;
2007         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2008                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2009         card->seqno.pdu_hdr++;
2010         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2011                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2012         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2013 }
2014 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2015
2016 int qeth_send_control_data(struct qeth_card *card, int len,
2017                 struct qeth_cmd_buffer *iob,
2018                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2019                         unsigned long),
2020                 void *reply_param)
2021 {
2022         int rc;
2023         unsigned long flags;
2024         struct qeth_reply *reply = NULL;
2025         unsigned long timeout, event_timeout;
2026         struct qeth_ipa_cmd *cmd;
2027
2028         QETH_CARD_TEXT(card, 2, "sendctl");
2029
2030         if (card->read_or_write_problem) {
2031                 qeth_release_buffer(iob->channel, iob);
2032                 return -EIO;
2033         }
2034         reply = qeth_alloc_reply(card);
2035         if (!reply) {
2036                 return -ENOMEM;
2037         }
2038         reply->callback = reply_cb;
2039         reply->param = reply_param;
2040         if (card->state == CARD_STATE_DOWN)
2041                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2042         else
2043                 reply->seqno = card->seqno.ipa++;
2044         init_waitqueue_head(&reply->wait_q);
2045         spin_lock_irqsave(&card->lock, flags);
2046         list_add_tail(&reply->list, &card->cmd_waiter_list);
2047         spin_unlock_irqrestore(&card->lock, flags);
2048         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2049
2050         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2051         qeth_prepare_control_data(card, len, iob);
2052
2053         if (IS_IPA(iob->data))
2054                 event_timeout = QETH_IPA_TIMEOUT;
2055         else
2056                 event_timeout = QETH_TIMEOUT;
2057         timeout = jiffies + event_timeout;
2058
2059         QETH_CARD_TEXT(card, 6, "noirqpnd");
2060         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2061         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2062                               (addr_t) iob, 0, 0);
2063         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2064         if (rc) {
2065                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2066                         "ccw_device_start rc = %i\n",
2067                         dev_name(&card->write.ccwdev->dev), rc);
2068                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2069                 spin_lock_irqsave(&card->lock, flags);
2070                 list_del_init(&reply->list);
2071                 qeth_put_reply(reply);
2072                 spin_unlock_irqrestore(&card->lock, flags);
2073                 qeth_release_buffer(iob->channel, iob);
2074                 atomic_set(&card->write.irq_pending, 0);
2075                 wake_up(&card->wait_q);
2076                 return rc;
2077         }
2078
2079         /* we have only one long running ipassist, since we can ensure
2080            process context of this command we can sleep */
2081         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2082         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2083             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2084                 if (!wait_event_timeout(reply->wait_q,
2085                     atomic_read(&reply->received), event_timeout))
2086                         goto time_err;
2087         } else {
2088                 while (!atomic_read(&reply->received)) {
2089                         if (time_after(jiffies, timeout))
2090                                 goto time_err;
2091                         cpu_relax();
2092                 }
2093         }
2094
2095         if (reply->rc == -EIO)
2096                 goto error;
2097         rc = reply->rc;
2098         qeth_put_reply(reply);
2099         return rc;
2100
2101 time_err:
2102         reply->rc = -ETIME;
2103         spin_lock_irqsave(&reply->card->lock, flags);
2104         list_del_init(&reply->list);
2105         spin_unlock_irqrestore(&reply->card->lock, flags);
2106         atomic_inc(&reply->received);
2107 error:
2108         atomic_set(&card->write.irq_pending, 0);
2109         qeth_release_buffer(iob->channel, iob);
2110         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2111         rc = reply->rc;
2112         qeth_put_reply(reply);
2113         return rc;
2114 }
2115 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2116
2117 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2118                 unsigned long data)
2119 {
2120         struct qeth_cmd_buffer *iob;
2121
2122         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2123
2124         iob = (struct qeth_cmd_buffer *) data;
2125         memcpy(&card->token.cm_filter_r,
2126                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2127                QETH_MPC_TOKEN_LENGTH);
2128         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2129         return 0;
2130 }
2131
2132 static int qeth_cm_enable(struct qeth_card *card)
2133 {
2134         int rc;
2135         struct qeth_cmd_buffer *iob;
2136
2137         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2138
2139         iob = qeth_wait_for_buffer(&card->write);
2140         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2141         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2142                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2143         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2144                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2145
2146         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2147                                     qeth_cm_enable_cb, NULL);
2148         return rc;
2149 }
2150
2151 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2152                 unsigned long data)
2153 {
2154
2155         struct qeth_cmd_buffer *iob;
2156
2157         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2158
2159         iob = (struct qeth_cmd_buffer *) data;
2160         memcpy(&card->token.cm_connection_r,
2161                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2162                QETH_MPC_TOKEN_LENGTH);
2163         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2164         return 0;
2165 }
2166
2167 static int qeth_cm_setup(struct qeth_card *card)
2168 {
2169         int rc;
2170         struct qeth_cmd_buffer *iob;
2171
2172         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2173
2174         iob = qeth_wait_for_buffer(&card->write);
2175         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2176         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2177                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2178         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2179                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2180         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2181                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2182         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2183                                     qeth_cm_setup_cb, NULL);
2184         return rc;
2185
2186 }
2187
2188 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2189 {
2190         switch (card->info.type) {
2191         case QETH_CARD_TYPE_UNKNOWN:
2192                 return 1500;
2193         case QETH_CARD_TYPE_IQD:
2194                 return card->info.max_mtu;
2195         case QETH_CARD_TYPE_OSD:
2196                 switch (card->info.link_type) {
2197                 case QETH_LINK_TYPE_HSTR:
2198                 case QETH_LINK_TYPE_LANE_TR:
2199                         return 2000;
2200                 default:
2201                         return card->options.layer2 ? 1500 : 1492;
2202                 }
2203         case QETH_CARD_TYPE_OSM:
2204         case QETH_CARD_TYPE_OSX:
2205                 return card->options.layer2 ? 1500 : 1492;
2206         default:
2207                 return 1500;
2208         }
2209 }
2210
2211 static inline int qeth_get_mtu_outof_framesize(int framesize)
2212 {
2213         switch (framesize) {
2214         case 0x4000:
2215                 return 8192;
2216         case 0x6000:
2217                 return 16384;
2218         case 0xa000:
2219                 return 32768;
2220         case 0xffff:
2221                 return 57344;
2222         default:
2223                 return 0;
2224         }
2225 }
2226
2227 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2228 {
2229         switch (card->info.type) {
2230         case QETH_CARD_TYPE_OSD:
2231         case QETH_CARD_TYPE_OSM:
2232         case QETH_CARD_TYPE_OSX:
2233         case QETH_CARD_TYPE_IQD:
2234                 return ((mtu >= 576) &&
2235                         (mtu <= card->info.max_mtu));
2236         case QETH_CARD_TYPE_OSN:
2237         case QETH_CARD_TYPE_UNKNOWN:
2238         default:
2239                 return 1;
2240         }
2241 }
2242
2243 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2244                 unsigned long data)
2245 {
2246
2247         __u16 mtu, framesize;
2248         __u16 len;
2249         __u8 link_type;
2250         struct qeth_cmd_buffer *iob;
2251
2252         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2253
2254         iob = (struct qeth_cmd_buffer *) data;
2255         memcpy(&card->token.ulp_filter_r,
2256                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2257                QETH_MPC_TOKEN_LENGTH);
2258         if (card->info.type == QETH_CARD_TYPE_IQD) {
2259                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2260                 mtu = qeth_get_mtu_outof_framesize(framesize);
2261                 if (!mtu) {
2262                         iob->rc = -EINVAL;
2263                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2264                         return 0;
2265                 }
2266                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2267                         /* frame size has changed */
2268                         if (card->dev &&
2269                             ((card->dev->mtu == card->info.initial_mtu) ||
2270                              (card->dev->mtu > mtu)))
2271                                 card->dev->mtu = mtu;
2272                         qeth_free_qdio_buffers(card);
2273                 }
2274                 card->info.initial_mtu = mtu;
2275                 card->info.max_mtu = mtu;
2276                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2277         } else {
2278                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2279                         iob->data);
2280                 card->info.initial_mtu = min(card->info.max_mtu,
2281                                         qeth_get_initial_mtu_for_card(card));
2282                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2283         }
2284
2285         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2286         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2287                 memcpy(&link_type,
2288                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2289                 card->info.link_type = link_type;
2290         } else
2291                 card->info.link_type = 0;
2292         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2293         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2294         return 0;
2295 }
2296
2297 static int qeth_ulp_enable(struct qeth_card *card)
2298 {
2299         int rc;
2300         char prot_type;
2301         struct qeth_cmd_buffer *iob;
2302
2303         /*FIXME: trace view callbacks*/
2304         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2305
2306         iob = qeth_wait_for_buffer(&card->write);
2307         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2308
2309         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2310                 (__u8) card->info.portno;
2311         if (card->options.layer2)
2312                 if (card->info.type == QETH_CARD_TYPE_OSN)
2313                         prot_type = QETH_PROT_OSN2;
2314                 else
2315                         prot_type = QETH_PROT_LAYER2;
2316         else
2317                 prot_type = QETH_PROT_TCPIP;
2318
2319         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2320         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2321                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2322         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2323                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2324         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2325                card->info.portname, 9);
2326         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2327                                     qeth_ulp_enable_cb, NULL);
2328         return rc;
2329
2330 }
2331
2332 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2333                 unsigned long data)
2334 {
2335         struct qeth_cmd_buffer *iob;
2336
2337         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2338
2339         iob = (struct qeth_cmd_buffer *) data;
2340         memcpy(&card->token.ulp_connection_r,
2341                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2342                QETH_MPC_TOKEN_LENGTH);
2343         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2344                      3)) {
2345                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2346                 dev_err(&card->gdev->dev, "A connection could not be "
2347                         "established because of an OLM limit\n");
2348                 iob->rc = -EMLINK;
2349         }
2350         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2351         return 0;
2352 }
2353
2354 static int qeth_ulp_setup(struct qeth_card *card)
2355 {
2356         int rc;
2357         __u16 temp;
2358         struct qeth_cmd_buffer *iob;
2359         struct ccw_dev_id dev_id;
2360
2361         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2362
2363         iob = qeth_wait_for_buffer(&card->write);
2364         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2365
2366         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2367                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2368         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2369                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2370         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2371                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2372
2373         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2374         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2375         temp = (card->info.cula << 8) + card->info.unit_addr2;
2376         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2377         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2378                                     qeth_ulp_setup_cb, NULL);
2379         return rc;
2380 }
2381
2382 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2383 {
2384         int rc;
2385         struct qeth_qdio_out_buffer *newbuf;
2386
2387         rc = 0;
2388         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2389         if (!newbuf) {
2390                 rc = -ENOMEM;
2391                 goto out;
2392         }
2393         newbuf->buffer = &q->qdio_bufs[bidx];
2394         skb_queue_head_init(&newbuf->skb_list);
2395         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2396         newbuf->q = q;
2397         newbuf->aob = NULL;
2398         newbuf->next_pending = q->bufs[bidx];
2399         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2400         q->bufs[bidx] = newbuf;
2401         if (q->bufstates) {
2402                 q->bufstates[bidx].user = newbuf;
2403                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2404                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2405                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2406                                 (long) newbuf->next_pending);
2407         }
2408 out:
2409         return rc;
2410 }
2411
2412
2413 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2414 {
2415         int i, j;
2416
2417         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2418
2419         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2420                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2421                 return 0;
2422
2423         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2424                                    GFP_KERNEL);
2425         if (!card->qdio.in_q)
2426                 goto out_nomem;
2427         QETH_DBF_TEXT(SETUP, 2, "inq");
2428         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2429         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2430         /* give inbound qeth_qdio_buffers their qdio_buffers */
2431         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2432                 card->qdio.in_q->bufs[i].buffer =
2433                         &card->qdio.in_q->qdio_bufs[i];
2434                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2435         }
2436         /* inbound buffer pool */
2437         if (qeth_alloc_buffer_pool(card))
2438                 goto out_freeinq;
2439
2440         /* outbound */
2441         card->qdio.out_qs =
2442                 kzalloc(card->qdio.no_out_queues *
2443                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2444         if (!card->qdio.out_qs)
2445                 goto out_freepool;
2446         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2447                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2448                                                GFP_KERNEL);
2449                 if (!card->qdio.out_qs[i])
2450                         goto out_freeoutq;
2451                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2452                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2453                 card->qdio.out_qs[i]->queue_no = i;
2454                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2455                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2456                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2457                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2458                                 goto out_freeoutqbufs;
2459                 }
2460         }
2461
2462         /* completion */
2463         if (qeth_alloc_cq(card))
2464                 goto out_freeoutq;
2465
2466         return 0;
2467
2468 out_freeoutqbufs:
2469         while (j > 0) {
2470                 --j;
2471                 kmem_cache_free(qeth_qdio_outbuf_cache,
2472                                 card->qdio.out_qs[i]->bufs[j]);
2473                 card->qdio.out_qs[i]->bufs[j] = NULL;
2474         }
2475 out_freeoutq:
2476         while (i > 0) {
2477                 kfree(card->qdio.out_qs[--i]);
2478                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2479         }
2480         kfree(card->qdio.out_qs);
2481         card->qdio.out_qs = NULL;
2482 out_freepool:
2483         qeth_free_buffer_pool(card);
2484 out_freeinq:
2485         kfree(card->qdio.in_q);
2486         card->qdio.in_q = NULL;
2487 out_nomem:
2488         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2489         return -ENOMEM;
2490 }
2491
2492 static void qeth_create_qib_param_field(struct qeth_card *card,
2493                 char *param_field)
2494 {
2495
2496         param_field[0] = _ascebc['P'];
2497         param_field[1] = _ascebc['C'];
2498         param_field[2] = _ascebc['I'];
2499         param_field[3] = _ascebc['T'];
2500         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2501         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2502         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2503 }
2504
2505 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2506                 char *param_field)
2507 {
2508         param_field[16] = _ascebc['B'];
2509         param_field[17] = _ascebc['L'];
2510         param_field[18] = _ascebc['K'];
2511         param_field[19] = _ascebc['T'];
2512         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2513         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2514         *((unsigned int *) (&param_field[28])) =
2515                 card->info.blkt.inter_packet_jumbo;
2516 }
2517
2518 static int qeth_qdio_activate(struct qeth_card *card)
2519 {
2520         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2521         return qdio_activate(CARD_DDEV(card));
2522 }
2523
2524 static int qeth_dm_act(struct qeth_card *card)
2525 {
2526         int rc;
2527         struct qeth_cmd_buffer *iob;
2528
2529         QETH_DBF_TEXT(SETUP, 2, "dmact");
2530
2531         iob = qeth_wait_for_buffer(&card->write);
2532         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2533
2534         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2535                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2536         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2537                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2538         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2539         return rc;
2540 }
2541
2542 static int qeth_mpc_initialize(struct qeth_card *card)
2543 {
2544         int rc;
2545
2546         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2547
2548         rc = qeth_issue_next_read(card);
2549         if (rc) {
2550                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2551                 return rc;
2552         }
2553         rc = qeth_cm_enable(card);
2554         if (rc) {
2555                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2556                 goto out_qdio;
2557         }
2558         rc = qeth_cm_setup(card);
2559         if (rc) {
2560                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2561                 goto out_qdio;
2562         }
2563         rc = qeth_ulp_enable(card);
2564         if (rc) {
2565                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2566                 goto out_qdio;
2567         }
2568         rc = qeth_ulp_setup(card);
2569         if (rc) {
2570                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2571                 goto out_qdio;
2572         }
2573         rc = qeth_alloc_qdio_buffers(card);
2574         if (rc) {
2575                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2576                 goto out_qdio;
2577         }
2578         rc = qeth_qdio_establish(card);
2579         if (rc) {
2580                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2581                 qeth_free_qdio_buffers(card);
2582                 goto out_qdio;
2583         }
2584         rc = qeth_qdio_activate(card);
2585         if (rc) {
2586                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2587                 goto out_qdio;
2588         }
2589         rc = qeth_dm_act(card);
2590         if (rc) {
2591                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2592                 goto out_qdio;
2593         }
2594
2595         return 0;
2596 out_qdio:
2597         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2598         return rc;
2599 }
2600
2601 static void qeth_print_status_with_portname(struct qeth_card *card)
2602 {
2603         char dbf_text[15];
2604         int i;
2605
2606         sprintf(dbf_text, "%s", card->info.portname + 1);
2607         for (i = 0; i < 8; i++)
2608                 dbf_text[i] =
2609                         (char) _ebcasc[(__u8) dbf_text[i]];
2610         dbf_text[8] = 0;
2611         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2612                "with link type %s (portname: %s)\n",
2613                qeth_get_cardname(card),
2614                (card->info.mcl_level[0]) ? " (level: " : "",
2615                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2616                (card->info.mcl_level[0]) ? ")" : "",
2617                qeth_get_cardname_short(card),
2618                dbf_text);
2619
2620 }
2621
2622 static void qeth_print_status_no_portname(struct qeth_card *card)
2623 {
2624         if (card->info.portname[0])
2625                 dev_info(&card->gdev->dev, "Device is a%s "
2626                        "card%s%s%s\nwith link type %s "
2627                        "(no portname needed by interface).\n",
2628                        qeth_get_cardname(card),
2629                        (card->info.mcl_level[0]) ? " (level: " : "",
2630                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2631                        (card->info.mcl_level[0]) ? ")" : "",
2632                        qeth_get_cardname_short(card));
2633         else
2634                 dev_info(&card->gdev->dev, "Device is a%s "
2635                        "card%s%s%s\nwith link type %s.\n",
2636                        qeth_get_cardname(card),
2637                        (card->info.mcl_level[0]) ? " (level: " : "",
2638                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2639                        (card->info.mcl_level[0]) ? ")" : "",
2640                        qeth_get_cardname_short(card));
2641 }
2642
2643 void qeth_print_status_message(struct qeth_card *card)
2644 {
2645         switch (card->info.type) {
2646         case QETH_CARD_TYPE_OSD:
2647         case QETH_CARD_TYPE_OSM:
2648         case QETH_CARD_TYPE_OSX:
2649                 /* VM will use a non-zero first character
2650                  * to indicate a HiperSockets like reporting
2651                  * of the level OSA sets the first character to zero
2652                  * */
2653                 if (!card->info.mcl_level[0]) {
2654                         sprintf(card->info.mcl_level, "%02x%02x",
2655                                 card->info.mcl_level[2],
2656                                 card->info.mcl_level[3]);
2657
2658                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2659                         break;
2660                 }
2661                 /* fallthrough */
2662         case QETH_CARD_TYPE_IQD:
2663                 if ((card->info.guestlan) ||
2664                     (card->info.mcl_level[0] & 0x80)) {
2665                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2666                                 card->info.mcl_level[0]];
2667                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2668                                 card->info.mcl_level[1]];
2669                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2670                                 card->info.mcl_level[2]];
2671                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2672                                 card->info.mcl_level[3]];
2673                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2674                 }
2675                 break;
2676         default:
2677                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2678         }
2679         if (card->info.portname_required)
2680                 qeth_print_status_with_portname(card);
2681         else
2682                 qeth_print_status_no_portname(card);
2683 }
2684 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2685
2686 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2687 {
2688         struct qeth_buffer_pool_entry *entry;
2689
2690         QETH_CARD_TEXT(card, 5, "inwrklst");
2691
2692         list_for_each_entry(entry,
2693                             &card->qdio.init_pool.entry_list, init_list) {
2694                 qeth_put_buffer_pool_entry(card, entry);
2695         }
2696 }
2697
2698 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2699                 struct qeth_card *card)
2700 {
2701         struct list_head *plh;
2702         struct qeth_buffer_pool_entry *entry;
2703         int i, free;
2704         struct page *page;
2705
2706         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2707                 return NULL;
2708
2709         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2710                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2711                 free = 1;
2712                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2713                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2714                                 free = 0;
2715                                 break;
2716                         }
2717                 }
2718                 if (free) {
2719                         list_del_init(&entry->list);
2720                         return entry;
2721                 }
2722         }
2723
2724         /* no free buffer in pool so take first one and swap pages */
2725         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2726                         struct qeth_buffer_pool_entry, list);
2727         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2728                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2729                         page = alloc_page(GFP_ATOMIC);
2730                         if (!page) {
2731                                 return NULL;
2732                         } else {
2733                                 free_page((unsigned long)entry->elements[i]);
2734                                 entry->elements[i] = page_address(page);
2735                                 if (card->options.performance_stats)
2736                                         card->perf_stats.sg_alloc_page_rx++;
2737                         }
2738                 }
2739         }
2740         list_del_init(&entry->list);
2741         return entry;
2742 }
2743
2744 static int qeth_init_input_buffer(struct qeth_card *card,
2745                 struct qeth_qdio_buffer *buf)
2746 {
2747         struct qeth_buffer_pool_entry *pool_entry;
2748         int i;
2749
2750         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2751                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2752                 if (!buf->rx_skb)
2753                         return 1;
2754         }
2755
2756         pool_entry = qeth_find_free_buffer_pool_entry(card);
2757         if (!pool_entry)
2758                 return 1;
2759
2760         /*
2761          * since the buffer is accessed only from the input_tasklet
2762          * there shouldn't be a need to synchronize; also, since we use
2763          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2764          * buffers
2765          */
2766
2767         buf->pool_entry = pool_entry;
2768         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2769                 buf->buffer->element[i].length = PAGE_SIZE;
2770                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2771                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2772                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2773                 else
2774                         buf->buffer->element[i].eflags = 0;
2775                 buf->buffer->element[i].sflags = 0;
2776         }
2777         return 0;
2778 }
2779
2780 int qeth_init_qdio_queues(struct qeth_card *card)
2781 {
2782         int i, j;
2783         int rc;
2784
2785         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2786
2787         /* inbound queue */
2788         memset(card->qdio.in_q->qdio_bufs, 0,
2789                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2790         qeth_initialize_working_pool_list(card);
2791         /*give only as many buffers to hardware as we have buffer pool entries*/
2792         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2793                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2794         card->qdio.in_q->next_buf_to_init =
2795                 card->qdio.in_buf_pool.buf_count - 1;
2796         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2797                      card->qdio.in_buf_pool.buf_count - 1);
2798         if (rc) {
2799                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2800                 return rc;
2801         }
2802
2803         /* completion */
2804         rc = qeth_cq_init(card);
2805         if (rc) {
2806                 return rc;
2807         }
2808
2809         /* outbound queue */
2810         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2811                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2812                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2813                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2814                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2815                                         card->qdio.out_qs[i]->bufs[j],
2816                                         QETH_QDIO_BUF_EMPTY);
2817                 }
2818                 card->qdio.out_qs[i]->card = card;
2819                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2820                 card->qdio.out_qs[i]->do_pack = 0;
2821                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2822                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2823                 atomic_set(&card->qdio.out_qs[i]->state,
2824                            QETH_OUT_Q_UNLOCKED);
2825         }
2826         return 0;
2827 }
2828 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2829
2830 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2831 {
2832         switch (link_type) {
2833         case QETH_LINK_TYPE_HSTR:
2834                 return 2;
2835         default:
2836                 return 1;
2837         }
2838 }
2839
2840 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2841                 struct qeth_ipa_cmd *cmd, __u8 command,
2842                 enum qeth_prot_versions prot)
2843 {
2844         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2845         cmd->hdr.command = command;
2846         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2847         cmd->hdr.seqno = card->seqno.ipa;
2848         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2849         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2850         if (card->options.layer2)
2851                 cmd->hdr.prim_version_no = 2;
2852         else
2853                 cmd->hdr.prim_version_no = 1;
2854         cmd->hdr.param_count = 1;
2855         cmd->hdr.prot_version = prot;
2856         cmd->hdr.ipa_supported = 0;
2857         cmd->hdr.ipa_enabled = 0;
2858 }
2859
2860 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2861                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2862 {
2863         struct qeth_cmd_buffer *iob;
2864         struct qeth_ipa_cmd *cmd;
2865
2866         iob = qeth_wait_for_buffer(&card->write);
2867         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2868         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2869
2870         return iob;
2871 }
2872 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2873
2874 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2875                 char prot_type)
2876 {
2877         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2878         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2879         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2880                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2881 }
2882 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2883
2884 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2885                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2886                         unsigned long),
2887                 void *reply_param)
2888 {
2889         int rc;
2890         char prot_type;
2891
2892         QETH_CARD_TEXT(card, 4, "sendipa");
2893
2894         if (card->options.layer2)
2895                 if (card->info.type == QETH_CARD_TYPE_OSN)
2896                         prot_type = QETH_PROT_OSN2;
2897                 else
2898                         prot_type = QETH_PROT_LAYER2;
2899         else
2900                 prot_type = QETH_PROT_TCPIP;
2901         qeth_prepare_ipa_cmd(card, iob, prot_type);
2902         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2903                                                 iob, reply_cb, reply_param);
2904         if (rc == -ETIME) {
2905                 qeth_clear_ipacmd_list(card);
2906                 qeth_schedule_recovery(card);
2907         }
2908         return rc;
2909 }
2910 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2911
2912 int qeth_send_startlan(struct qeth_card *card)
2913 {
2914         int rc;
2915         struct qeth_cmd_buffer *iob;
2916
2917         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2918
2919         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2920         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2921         return rc;
2922 }
2923 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2924
2925 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2926                 struct qeth_reply *reply, unsigned long data)
2927 {
2928         struct qeth_ipa_cmd *cmd;
2929
2930         QETH_CARD_TEXT(card, 4, "defadpcb");
2931
2932         cmd = (struct qeth_ipa_cmd *) data;
2933         if (cmd->hdr.return_code == 0)
2934                 cmd->hdr.return_code =
2935                         cmd->data.setadapterparms.hdr.return_code;
2936         return 0;
2937 }
2938
2939 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2940                 struct qeth_reply *reply, unsigned long data)
2941 {
2942         struct qeth_ipa_cmd *cmd;
2943
2944         QETH_CARD_TEXT(card, 3, "quyadpcb");
2945
2946         cmd = (struct qeth_ipa_cmd *) data;
2947         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2948                 card->info.link_type =
2949                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2950                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2951         }
2952         card->options.adp.supported_funcs =
2953                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2954         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2955 }
2956
2957 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2958                 __u32 command, __u32 cmdlen)
2959 {
2960         struct qeth_cmd_buffer *iob;
2961         struct qeth_ipa_cmd *cmd;
2962
2963         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2964                                      QETH_PROT_IPV4);
2965         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2966         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2967         cmd->data.setadapterparms.hdr.command_code = command;
2968         cmd->data.setadapterparms.hdr.used_total = 1;
2969         cmd->data.setadapterparms.hdr.seq_no = 1;
2970
2971         return iob;
2972 }
2973
2974 int qeth_query_setadapterparms(struct qeth_card *card)
2975 {
2976         int rc;
2977         struct qeth_cmd_buffer *iob;
2978
2979         QETH_CARD_TEXT(card, 3, "queryadp");
2980         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2981                                    sizeof(struct qeth_ipacmd_setadpparms));
2982         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2983         return rc;
2984 }
2985 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2986
2987 static int qeth_query_ipassists_cb(struct qeth_card *card,
2988                 struct qeth_reply *reply, unsigned long data)
2989 {
2990         struct qeth_ipa_cmd *cmd;
2991
2992         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2993
2994         cmd = (struct qeth_ipa_cmd *) data;
2995
2996         switch (cmd->hdr.return_code) {
2997         case IPA_RC_NOTSUPP:
2998         case IPA_RC_L2_UNSUPPORTED_CMD:
2999                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3000                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3001                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3002                 return -0;
3003         default:
3004                 if (cmd->hdr.return_code) {
3005                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3006                                                 "rc=%d\n",
3007                                                 dev_name(&card->gdev->dev),
3008                                                 cmd->hdr.return_code);
3009                         return 0;
3010                 }
3011         }
3012
3013         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3014                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3015                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3016         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3017                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3018                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3019         } else
3020                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3021                                         "\n", dev_name(&card->gdev->dev));
3022         return 0;
3023 }
3024
3025 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3026 {
3027         int rc;
3028         struct qeth_cmd_buffer *iob;
3029
3030         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3031         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3032         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3033         return rc;
3034 }
3035 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3036
3037 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3038                 struct qeth_reply *reply, unsigned long data)
3039 {
3040         struct qeth_ipa_cmd *cmd;
3041         __u16 rc;
3042
3043         cmd = (struct qeth_ipa_cmd *)data;
3044         rc = cmd->hdr.return_code;
3045         if (rc)
3046                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3047         else
3048                 card->info.diagass_support = cmd->data.diagass.ext;
3049         return 0;
3050 }
3051
3052 static int qeth_query_setdiagass(struct qeth_card *card)
3053 {
3054         struct qeth_cmd_buffer *iob;
3055         struct qeth_ipa_cmd    *cmd;
3056
3057         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3058         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3059         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3060         cmd->data.diagass.subcmd_len = 16;
3061         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3062         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3063 }
3064
3065 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3066 {
3067         unsigned long info = get_zeroed_page(GFP_KERNEL);
3068         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3069         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3070         struct ccw_dev_id ccwid;
3071         int level;
3072
3073         tid->chpid = card->info.chpid;
3074         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3075         tid->ssid = ccwid.ssid;
3076         tid->devno = ccwid.devno;
3077         if (!info)
3078                 return;
3079         level = stsi(NULL, 0, 0, 0);
3080         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3081                 tid->lparnr = info222->lpar_number;
3082         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3083                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3084                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3085         }
3086         free_page(info);
3087         return;
3088 }
3089
3090 static int qeth_hw_trap_cb(struct qeth_card *card,
3091                 struct qeth_reply *reply, unsigned long data)
3092 {
3093         struct qeth_ipa_cmd *cmd;
3094         __u16 rc;
3095
3096         cmd = (struct qeth_ipa_cmd *)data;
3097         rc = cmd->hdr.return_code;
3098         if (rc)
3099                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3100         return 0;
3101 }
3102
3103 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3104 {
3105         struct qeth_cmd_buffer *iob;
3106         struct qeth_ipa_cmd *cmd;
3107
3108         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3109         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3110         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3111         cmd->data.diagass.subcmd_len = 80;
3112         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3113         cmd->data.diagass.type = 1;
3114         cmd->data.diagass.action = action;
3115         switch (action) {
3116         case QETH_DIAGS_TRAP_ARM:
3117                 cmd->data.diagass.options = 0x0003;
3118                 cmd->data.diagass.ext = 0x00010000 +
3119                         sizeof(struct qeth_trap_id);
3120                 qeth_get_trap_id(card,
3121                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3122                 break;
3123         case QETH_DIAGS_TRAP_DISARM:
3124                 cmd->data.diagass.options = 0x0001;
3125                 break;
3126         case QETH_DIAGS_TRAP_CAPTURE:
3127                 break;
3128         }
3129         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3130 }
3131 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3132
3133 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3134                 unsigned int qdio_error, const char *dbftext)
3135 {
3136         if (qdio_error) {
3137                 QETH_CARD_TEXT(card, 2, dbftext);
3138                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3139                                buf->element[15].sflags);
3140                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3141                                buf->element[14].sflags);
3142                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3143                 if ((buf->element[15].sflags) == 0x12) {
3144                         card->stats.rx_dropped++;
3145                         return 0;
3146                 } else
3147                         return 1;
3148         }
3149         return 0;
3150 }
3151 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3152
3153 void qeth_buffer_reclaim_work(struct work_struct *work)
3154 {
3155         struct qeth_card *card = container_of(work, struct qeth_card,
3156                 buffer_reclaim_work.work);
3157
3158         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3159         qeth_queue_input_buffer(card, card->reclaim_index);
3160 }
3161
3162 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3163 {
3164         struct qeth_qdio_q *queue = card->qdio.in_q;
3165         struct list_head *lh;
3166         int count;
3167         int i;
3168         int rc;
3169         int newcount = 0;
3170
3171         count = (index < queue->next_buf_to_init)?
3172                 card->qdio.in_buf_pool.buf_count -
3173                 (queue->next_buf_to_init - index) :
3174                 card->qdio.in_buf_pool.buf_count -
3175                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3176         /* only requeue at a certain threshold to avoid SIGAs */
3177         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3178                 for (i = queue->next_buf_to_init;
3179                      i < queue->next_buf_to_init + count; ++i) {
3180                         if (qeth_init_input_buffer(card,
3181                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3182                                 break;
3183                         } else {
3184                                 newcount++;
3185                         }
3186                 }
3187
3188                 if (newcount < count) {
3189                         /* we are in memory shortage so we switch back to
3190                            traditional skb allocation and drop packages */
3191                         atomic_set(&card->force_alloc_skb, 3);
3192                         count = newcount;
3193                 } else {
3194                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3195                 }
3196
3197                 if (!count) {
3198                         i = 0;
3199                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3200                                 i++;
3201                         if (i == card->qdio.in_buf_pool.buf_count) {
3202                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3203                                 card->reclaim_index = index;
3204                                 schedule_delayed_work(
3205                                         &card->buffer_reclaim_work,
3206                                         QETH_RECLAIM_WORK_TIME);
3207                         }
3208                         return;
3209                 }
3210
3211                 /*
3212                  * according to old code it should be avoided to requeue all
3213                  * 128 buffers in order to benefit from PCI avoidance.
3214                  * this function keeps at least one buffer (the buffer at
3215                  * 'index') un-requeued -> this buffer is the first buffer that
3216                  * will be requeued the next time
3217                  */
3218                 if (card->options.performance_stats) {
3219                         card->perf_stats.inbound_do_qdio_cnt++;
3220                         card->perf_stats.inbound_do_qdio_start_time =
3221                                 qeth_get_micros();
3222                 }
3223                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3224                              queue->next_buf_to_init, count);
3225                 if (card->options.performance_stats)
3226                         card->perf_stats.inbound_do_qdio_time +=
3227                                 qeth_get_micros() -
3228                                 card->perf_stats.inbound_do_qdio_start_time;
3229                 if (rc) {
3230                         QETH_CARD_TEXT(card, 2, "qinberr");
3231                 }
3232                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3233                                           QDIO_MAX_BUFFERS_PER_Q;
3234         }
3235 }
3236 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3237
3238 static int qeth_handle_send_error(struct qeth_card *card,
3239                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3240 {
3241         int sbalf15 = buffer->buffer->element[15].sflags;
3242
3243         QETH_CARD_TEXT(card, 6, "hdsnderr");
3244         if (card->info.type == QETH_CARD_TYPE_IQD) {
3245                 if (sbalf15 == 0) {
3246                         qdio_err = 0;
3247                 } else {
3248                         qdio_err = 1;
3249                 }
3250         }
3251         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3252
3253         if (!qdio_err)
3254                 return QETH_SEND_ERROR_NONE;
3255
3256         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3257                 return QETH_SEND_ERROR_RETRY;
3258
3259         QETH_CARD_TEXT(card, 1, "lnkfail");
3260         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3261                        (u16)qdio_err, (u8)sbalf15);
3262         return QETH_SEND_ERROR_LINK_FAILURE;
3263 }
3264
3265 /*
3266  * Switched to packing state if the number of used buffers on a queue
3267  * reaches a certain limit.
3268  */
3269 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3270 {
3271         if (!queue->do_pack) {
3272                 if (atomic_read(&queue->used_buffers)
3273                     >= QETH_HIGH_WATERMARK_PACK){
3274                         /* switch non-PACKING -> PACKING */
3275                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3276                         if (queue->card->options.performance_stats)
3277                                 queue->card->perf_stats.sc_dp_p++;
3278                         queue->do_pack = 1;
3279                 }
3280         }
3281 }
3282
3283 /*
3284  * Switches from packing to non-packing mode. If there is a packing
3285  * buffer on the queue this buffer will be prepared to be flushed.
3286  * In that case 1 is returned to inform the caller. If no buffer
3287  * has to be flushed, zero is returned.
3288  */
3289 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3290 {
3291         struct qeth_qdio_out_buffer *buffer;
3292         int flush_count = 0;
3293
3294         if (queue->do_pack) {
3295                 if (atomic_read(&queue->used_buffers)
3296                     <= QETH_LOW_WATERMARK_PACK) {
3297                         /* switch PACKING -> non-PACKING */
3298                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3299                         if (queue->card->options.performance_stats)
3300                                 queue->card->perf_stats.sc_p_dp++;
3301                         queue->do_pack = 0;
3302                         /* flush packing buffers */
3303                         buffer = queue->bufs[queue->next_buf_to_fill];
3304                         if ((atomic_read(&buffer->state) ==
3305                                                 QETH_QDIO_BUF_EMPTY) &&
3306                             (buffer->next_element_to_fill > 0)) {
3307                                 atomic_set(&buffer->state,
3308                                            QETH_QDIO_BUF_PRIMED);
3309                                 flush_count++;
3310                                 queue->next_buf_to_fill =
3311                                         (queue->next_buf_to_fill + 1) %
3312                                         QDIO_MAX_BUFFERS_PER_Q;
3313                         }
3314                 }
3315         }
3316         return flush_count;
3317 }
3318
3319
3320 /*
3321  * Called to flush a packing buffer if no more pci flags are on the queue.
3322  * Checks if there is a packing buffer and prepares it to be flushed.
3323  * In that case returns 1, otherwise zero.
3324  */
3325 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3326 {
3327         struct qeth_qdio_out_buffer *buffer;
3328
3329         buffer = queue->bufs[queue->next_buf_to_fill];
3330         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3331            (buffer->next_element_to_fill > 0)) {
3332                 /* it's a packing buffer */
3333                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3334                 queue->next_buf_to_fill =
3335                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3336                 return 1;
3337         }
3338         return 0;
3339 }
3340
3341 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3342                                int count)
3343 {
3344         struct qeth_qdio_out_buffer *buf;
3345         int rc;
3346         int i;
3347         unsigned int qdio_flags;
3348
3349         for (i = index; i < index + count; ++i) {
3350                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3351                 buf = queue->bufs[bidx];
3352                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3353                                 SBAL_EFLAGS_LAST_ENTRY;
3354
3355                 if (queue->bufstates)
3356                         queue->bufstates[bidx].user = buf;
3357
3358                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3359                         continue;
3360
3361                 if (!queue->do_pack) {
3362                         if ((atomic_read(&queue->used_buffers) >=
3363                                 (QETH_HIGH_WATERMARK_PACK -
3364                                  QETH_WATERMARK_PACK_FUZZ)) &&
3365                             !atomic_read(&queue->set_pci_flags_count)) {
3366                                 /* it's likely that we'll go to packing
3367                                  * mode soon */
3368                                 atomic_inc(&queue->set_pci_flags_count);
3369                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3370                         }
3371                 } else {
3372                         if (!atomic_read(&queue->set_pci_flags_count)) {
3373                                 /*
3374                                  * there's no outstanding PCI any more, so we
3375                                  * have to request a PCI to be sure the the PCI
3376                                  * will wake at some time in the future then we
3377                                  * can flush packed buffers that might still be
3378                                  * hanging around, which can happen if no
3379                                  * further send was requested by the stack
3380                                  */
3381                                 atomic_inc(&queue->set_pci_flags_count);
3382                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3383                         }
3384                 }
3385         }
3386
3387         queue->card->dev->trans_start = jiffies;
3388         if (queue->card->options.performance_stats) {
3389                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3390                 queue->card->perf_stats.outbound_do_qdio_start_time =
3391                         qeth_get_micros();
3392         }
3393         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3394         if (atomic_read(&queue->set_pci_flags_count))
3395                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3396         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3397                      queue->queue_no, index, count);
3398         if (queue->card->options.performance_stats)
3399                 queue->card->perf_stats.outbound_do_qdio_time +=
3400                         qeth_get_micros() -
3401                         queue->card->perf_stats.outbound_do_qdio_start_time;
3402         atomic_add(count, &queue->used_buffers);
3403         if (rc) {
3404                 queue->card->stats.tx_errors += count;
3405                 /* ignore temporary SIGA errors without busy condition */
3406                 if (rc == -ENOBUFS)
3407                         return;
3408                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3409                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3410                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3411                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3412                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3413
3414                 /* this must not happen under normal circumstances. if it
3415                  * happens something is really wrong -> recover */
3416                 qeth_schedule_recovery(queue->card);
3417                 return;
3418         }
3419         if (queue->card->options.performance_stats)
3420                 queue->card->perf_stats.bufs_sent += count;
3421 }
3422
3423 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3424 {
3425         int index;
3426         int flush_cnt = 0;
3427         int q_was_packing = 0;
3428
3429         /*
3430          * check if weed have to switch to non-packing mode or if
3431          * we have to get a pci flag out on the queue
3432          */
3433         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3434             !atomic_read(&queue->set_pci_flags_count)) {
3435                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3436                                 QETH_OUT_Q_UNLOCKED) {
3437                         /*
3438                          * If we get in here, there was no action in
3439                          * do_send_packet. So, we check if there is a
3440                          * packing buffer to be flushed here.
3441                          */
3442                         netif_stop_queue(queue->card->dev);
3443                         index = queue->next_buf_to_fill;
3444                         q_was_packing = queue->do_pack;
3445                         /* queue->do_pack may change */
3446                         barrier();
3447                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3448                         if (!flush_cnt &&
3449                             !atomic_read(&queue->set_pci_flags_count))
3450                                 flush_cnt +=
3451                                         qeth_flush_buffers_on_no_pci(queue);
3452                         if (queue->card->options.performance_stats &&
3453                             q_was_packing)
3454                                 queue->card->perf_stats.bufs_sent_pack +=
3455                                         flush_cnt;
3456                         if (flush_cnt)
3457                                 qeth_flush_buffers(queue, index, flush_cnt);
3458                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3459                 }
3460         }
3461 }
3462
3463 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3464                 unsigned long card_ptr)
3465 {
3466         struct qeth_card *card = (struct qeth_card *)card_ptr;
3467
3468         if (card->dev && (card->dev->flags & IFF_UP))
3469                 napi_schedule(&card->napi);
3470 }
3471 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3472
3473 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3474 {
3475         int rc;
3476
3477         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3478                 rc = -1;
3479                 goto out;
3480         } else {
3481                 if (card->options.cq == cq) {
3482                         rc = 0;
3483                         goto out;
3484                 }
3485
3486                 if (card->state != CARD_STATE_DOWN &&
3487                     card->state != CARD_STATE_RECOVER) {
3488                         rc = -1;
3489                         goto out;
3490                 }
3491
3492                 qeth_free_qdio_buffers(card);
3493                 card->options.cq = cq;
3494                 rc = 0;
3495         }
3496 out:
3497         return rc;
3498
3499 }
3500 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3501
3502
3503 static void qeth_qdio_cq_handler(struct qeth_card *card,
3504                 unsigned int qdio_err,
3505                 unsigned int queue, int first_element, int count) {
3506         struct qeth_qdio_q *cq = card->qdio.c_q;
3507         int i;
3508         int rc;
3509
3510         if (!qeth_is_cq(card, queue))
3511                 goto out;
3512
3513         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3514         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3515         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3516
3517         if (qdio_err) {
3518                 netif_stop_queue(card->dev);
3519                 qeth_schedule_recovery(card);
3520                 goto out;
3521         }
3522
3523         if (card->options.performance_stats) {
3524                 card->perf_stats.cq_cnt++;
3525                 card->perf_stats.cq_start_time = qeth_get_micros();
3526         }
3527
3528         for (i = first_element; i < first_element + count; ++i) {
3529                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3530                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3531                 int e;
3532
3533                 e = 0;
3534                 while (buffer->element[e].addr) {
3535                         unsigned long phys_aob_addr;
3536
3537                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3538                         qeth_qdio_handle_aob(card, phys_aob_addr);
3539                         buffer->element[e].addr = NULL;
3540                         buffer->element[e].eflags = 0;
3541                         buffer->element[e].sflags = 0;
3542                         buffer->element[e].length = 0;
3543
3544                         ++e;
3545                 }
3546
3547                 buffer->element[15].eflags = 0;
3548                 buffer->element[15].sflags = 0;
3549         }
3550         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3551                     card->qdio.c_q->next_buf_to_init,
3552                     count);
3553         if (rc) {
3554                 dev_warn(&card->gdev->dev,
3555                         "QDIO reported an error, rc=%i\n", rc);
3556                 QETH_CARD_TEXT(card, 2, "qcqherr");
3557         }
3558         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3559                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3560
3561         netif_wake_queue(card->dev);
3562
3563         if (card->options.performance_stats) {
3564                 int delta_t = qeth_get_micros();
3565                 delta_t -= card->perf_stats.cq_start_time;
3566                 card->perf_stats.cq_time += delta_t;
3567         }
3568 out:
3569         return;
3570 }
3571
3572 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3573                 unsigned int queue, int first_elem, int count,
3574                 unsigned long card_ptr)
3575 {
3576         struct qeth_card *card = (struct qeth_card *)card_ptr;
3577
3578         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3579         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3580
3581         if (qeth_is_cq(card, queue))
3582                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3583         else if (qdio_err)
3584                 qeth_schedule_recovery(card);
3585
3586
3587 }
3588 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3589
3590 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3591                 unsigned int qdio_error, int __queue, int first_element,
3592                 int count, unsigned long card_ptr)
3593 {
3594         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3595         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3596         struct qeth_qdio_out_buffer *buffer;
3597         int i;
3598
3599         QETH_CARD_TEXT(card, 6, "qdouhdl");
3600         if (qdio_error & QDIO_ERROR_FATAL) {
3601                 QETH_CARD_TEXT(card, 2, "achkcond");
3602                 netif_stop_queue(card->dev);
3603                 qeth_schedule_recovery(card);
3604                 return;
3605         }
3606         if (card->options.performance_stats) {
3607                 card->perf_stats.outbound_handler_cnt++;
3608                 card->perf_stats.outbound_handler_start_time =
3609                         qeth_get_micros();
3610         }
3611         for (i = first_element; i < (first_element + count); ++i) {
3612                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3613                 buffer = queue->bufs[bidx];
3614                 qeth_handle_send_error(card, buffer, qdio_error);
3615
3616                 if (queue->bufstates &&
3617                     (queue->bufstates[bidx].flags &
3618                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3619                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3620
3621                         if (atomic_cmpxchg(&buffer->state,
3622                                            QETH_QDIO_BUF_PRIMED,
3623                                            QETH_QDIO_BUF_PENDING) ==
3624                                 QETH_QDIO_BUF_PRIMED) {
3625                                 qeth_notify_skbs(queue, buffer,
3626                                                  TX_NOTIFY_PENDING);
3627                         }
3628                         buffer->aob = queue->bufstates[bidx].aob;
3629                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3630                         QETH_CARD_TEXT(queue->card, 5, "aob");
3631                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3632                                         virt_to_phys(buffer->aob));
3633                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3634                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3635                                 qeth_schedule_recovery(card);
3636                         }
3637                 } else {
3638                         if (card->options.cq == QETH_CQ_ENABLED) {
3639                                 enum iucv_tx_notify n;
3640
3641                                 n = qeth_compute_cq_notification(
3642                                         buffer->buffer->element[15].sflags, 0);
3643                                 qeth_notify_skbs(queue, buffer, n);
3644                         }
3645
3646                         qeth_clear_output_buffer(queue, buffer,
3647                                                 QETH_QDIO_BUF_EMPTY);
3648                 }
3649                 qeth_cleanup_handled_pending(queue, bidx, 0);
3650         }
3651         atomic_sub(count, &queue->used_buffers);
3652         /* check if we need to do something on this outbound queue */
3653         if (card->info.type != QETH_CARD_TYPE_IQD)
3654                 qeth_check_outbound_queue(queue);
3655
3656         netif_wake_queue(queue->card->dev);
3657         if (card->options.performance_stats)
3658                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3659                         card->perf_stats.outbound_handler_start_time;
3660 }
3661 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3662
3663 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3664                         int ipv, int cast_type)
3665 {
3666         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3667                      card->info.type == QETH_CARD_TYPE_OSX))
3668                 return card->qdio.default_out_queue;
3669         switch (card->qdio.no_out_queues) {
3670         case 4:
3671                 if (cast_type && card->info.is_multicast_different)
3672                         return card->info.is_multicast_different &
3673                                 (card->qdio.no_out_queues - 1);
3674                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3675                         const u8 tos = ip_hdr(skb)->tos;
3676
3677                         if (card->qdio.do_prio_queueing ==
3678                                 QETH_PRIO_Q_ING_TOS) {
3679                                 if (tos & IP_TOS_NOTIMPORTANT)
3680                                         return 3;
3681                                 if (tos & IP_TOS_HIGHRELIABILITY)
3682                                         return 2;
3683                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3684                                         return 1;
3685                                 if (tos & IP_TOS_LOWDELAY)
3686                                         return 0;
3687                         }
3688                         if (card->qdio.do_prio_queueing ==
3689                                 QETH_PRIO_Q_ING_PREC)
3690                                 return 3 - (tos >> 6);
3691                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3692                         /* TODO: IPv6!!! */
3693                 }
3694                 return card->qdio.default_out_queue;
3695         case 1: /* fallthrough for single-out-queue 1920-device */
3696         default:
3697                 return card->qdio.default_out_queue;
3698         }
3699 }
3700 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3701
3702 int qeth_get_elements_for_frags(struct sk_buff *skb)
3703 {
3704         int cnt, length, e, elements = 0;
3705         struct skb_frag_struct *frag;
3706         char *data;
3707
3708         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3709                 frag = &skb_shinfo(skb)->frags[cnt];
3710                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3711                         frag->page_offset;
3712                 length = frag->size;
3713                 e = PFN_UP((unsigned long)data + length - 1) -
3714                         PFN_DOWN((unsigned long)data);
3715                 elements += e;
3716         }
3717         return elements;
3718 }
3719 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3720
3721 int qeth_get_elements_no(struct qeth_card *card,
3722                      struct sk_buff *skb, int elems)
3723 {
3724         int dlen = skb->len - skb->data_len;
3725         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3726                 PFN_DOWN((unsigned long)skb->data);
3727
3728         elements_needed += qeth_get_elements_for_frags(skb);
3729
3730         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3731                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3732                         "(Number=%d / Length=%d). Discarded.\n",
3733                         (elements_needed+elems), skb->len);
3734                 return 0;
3735         }
3736         return elements_needed;
3737 }
3738 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3739
3740 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3741 {
3742         int hroom, inpage, rest;
3743
3744         if (((unsigned long)skb->data & PAGE_MASK) !=
3745             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3746                 hroom = skb_headroom(skb);
3747                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3748                 rest = len - inpage;
3749                 if (rest > hroom)
3750                         return 1;
3751                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3752                 skb->data -= rest;
3753                 skb->tail -= rest;
3754                 *hdr = (struct qeth_hdr *)skb->data;
3755                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3756         }
3757         return 0;
3758 }
3759 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3760
3761 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3762         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3763         int offset)
3764 {
3765         int length = skb->len - skb->data_len;
3766         int length_here;
3767         int element;
3768         char *data;
3769         int first_lap, cnt;
3770         struct skb_frag_struct *frag;
3771
3772         element = *next_element_to_fill;
3773         data = skb->data;
3774         first_lap = (is_tso == 0 ? 1 : 0);
3775
3776         if (offset >= 0) {
3777                 data = skb->data + offset;
3778                 length -= offset;
3779                 first_lap = 0;
3780         }
3781
3782         while (length > 0) {
3783                 /* length_here is the remaining amount of data in this page */
3784                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3785                 if (length < length_here)
3786                         length_here = length;
3787
3788                 buffer->element[element].addr = data;
3789                 buffer->element[element].length = length_here;
3790                 length -= length_here;
3791                 if (!length) {
3792                         if (first_lap)
3793                                 if (skb_shinfo(skb)->nr_frags)
3794                                         buffer->element[element].eflags =
3795                                                 SBAL_EFLAGS_FIRST_FRAG;
3796                                 else
3797                                         buffer->element[element].eflags = 0;
3798                         else
3799                                 buffer->element[element].eflags =
3800                                     SBAL_EFLAGS_MIDDLE_FRAG;
3801                 } else {
3802                         if (first_lap)
3803                                 buffer->element[element].eflags =
3804                                     SBAL_EFLAGS_FIRST_FRAG;
3805                         else
3806                                 buffer->element[element].eflags =
3807                                     SBAL_EFLAGS_MIDDLE_FRAG;
3808                 }
3809                 data += length_here;
3810                 element++;
3811                 first_lap = 0;
3812         }
3813
3814         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3815                 frag = &skb_shinfo(skb)->frags[cnt];
3816                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3817                         frag->page_offset;
3818                 length = frag->size;
3819                 while (length > 0) {
3820                         length_here = PAGE_SIZE -
3821                                 ((unsigned long) data % PAGE_SIZE);
3822                         if (length < length_here)
3823                                 length_here = length;
3824
3825                         buffer->element[element].addr = data;
3826                         buffer->element[element].length = length_here;
3827                         buffer->element[element].eflags =
3828                                 SBAL_EFLAGS_MIDDLE_FRAG;
3829                         length -= length_here;
3830                         data += length_here;
3831                         element++;
3832                 }
3833         }
3834
3835         if (buffer->element[element - 1].eflags)
3836                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3837         *next_element_to_fill = element;
3838 }
3839
3840 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3841                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3842                 struct qeth_hdr *hdr, int offset, int hd_len)
3843 {
3844         struct qdio_buffer *buffer;
3845         int flush_cnt = 0, hdr_len, large_send = 0;
3846
3847         buffer = buf->buffer;
3848         atomic_inc(&skb->users);
3849         skb_queue_tail(&buf->skb_list, skb);
3850
3851         /*check first on TSO ....*/
3852         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3853                 int element = buf->next_element_to_fill;
3854
3855                 hdr_len = sizeof(struct qeth_hdr_tso) +
3856                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3857                 /*fill first buffer entry only with header information */
3858                 buffer->element[element].addr = skb->data;
3859                 buffer->element[element].length = hdr_len;
3860                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3861                 buf->next_element_to_fill++;
3862                 skb->data += hdr_len;
3863                 skb->len  -= hdr_len;
3864                 large_send = 1;
3865         }
3866
3867         if (offset >= 0) {
3868                 int element = buf->next_element_to_fill;
3869                 buffer->element[element].addr = hdr;
3870                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3871                                                         hd_len;
3872                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3873                 buf->is_header[element] = 1;
3874                 buf->next_element_to_fill++;
3875         }
3876
3877         __qeth_fill_buffer(skb, buffer, large_send,
3878                 (int *)&buf->next_element_to_fill, offset);
3879
3880         if (!queue->do_pack) {
3881                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3882                 /* set state to PRIMED -> will be flushed */
3883                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3884                 flush_cnt = 1;
3885         } else {
3886                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3887                 if (queue->card->options.performance_stats)
3888                         queue->card->perf_stats.skbs_sent_pack++;
3889                 if (buf->next_element_to_fill >=
3890                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3891                         /*
3892                          * packed buffer if full -> set state PRIMED
3893                          * -> will be flushed
3894                          */
3895                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3896                         flush_cnt = 1;
3897                 }
3898         }
3899         return flush_cnt;
3900 }
3901
3902 int qeth_do_send_packet_fast(struct qeth_card *card,
3903                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3904                 struct qeth_hdr *hdr, int elements_needed,
3905                 int offset, int hd_len)
3906 {
3907         struct qeth_qdio_out_buffer *buffer;
3908         int index;
3909
3910         /* spin until we get the queue ... */
3911         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3912                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3913         /* ... now we've got the queue */
3914         index = queue->next_buf_to_fill;
3915         buffer = queue->bufs[queue->next_buf_to_fill];
3916         /*
3917          * check if buffer is empty to make sure that we do not 'overtake'
3918          * ourselves and try to fill a buffer that is already primed
3919          */
3920         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3921                 goto out;
3922         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3923                                           QDIO_MAX_BUFFERS_PER_Q;
3924         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3925         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3926         qeth_flush_buffers(queue, index, 1);
3927         return 0;
3928 out:
3929         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3930         return -EBUSY;
3931 }
3932 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3933
3934 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3935                 struct sk_buff *skb, struct qeth_hdr *hdr,
3936                 int elements_needed)
3937 {
3938         struct qeth_qdio_out_buffer *buffer;
3939         int start_index;
3940         int flush_count = 0;
3941         int do_pack = 0;
3942         int tmp;
3943         int rc = 0;
3944
3945         /* spin until we get the queue ... */
3946         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3947                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3948         start_index = queue->next_buf_to_fill;
3949         buffer = queue->bufs[queue->next_buf_to_fill];
3950         /*
3951          * check if buffer is empty to make sure that we do not 'overtake'
3952          * ourselves and try to fill a buffer that is already primed
3953          */
3954         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3955                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3956                 return -EBUSY;
3957         }
3958         /* check if we need to switch packing state of this queue */
3959         qeth_switch_to_packing_if_needed(queue);
3960         if (queue->do_pack) {
3961                 do_pack = 1;
3962                 /* does packet fit in current buffer? */
3963                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3964                     buffer->next_element_to_fill) < elements_needed) {
3965                         /* ... no -> set state PRIMED */
3966                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3967                         flush_count++;
3968                         queue->next_buf_to_fill =
3969                                 (queue->next_buf_to_fill + 1) %
3970                                 QDIO_MAX_BUFFERS_PER_Q;
3971                         buffer = queue->bufs[queue->next_buf_to_fill];
3972                         /* we did a step forward, so check buffer state
3973                          * again */
3974                         if (atomic_read(&buffer->state) !=
3975                             QETH_QDIO_BUF_EMPTY) {
3976                                 qeth_flush_buffers(queue, start_index,
3977                                                            flush_count);
3978                                 atomic_set(&queue->state,
3979                                                 QETH_OUT_Q_UNLOCKED);
3980                                 return -EBUSY;
3981                         }
3982                 }
3983         }
3984         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3985         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3986                                   QDIO_MAX_BUFFERS_PER_Q;
3987         flush_count += tmp;
3988         if (flush_count)
3989                 qeth_flush_buffers(queue, start_index, flush_count);
3990         else if (!atomic_read(&queue->set_pci_flags_count))
3991                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3992         /*
3993          * queue->state will go from LOCKED -> UNLOCKED or from
3994          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3995          * (switch packing state or flush buffer to get another pci flag out).
3996          * In that case we will enter this loop
3997          */
3998         while (atomic_dec_return(&queue->state)) {
3999                 flush_count = 0;
4000                 start_index = queue->next_buf_to_fill;
4001                 /* check if we can go back to non-packing state */
4002                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4003                 /*
4004                  * check if we need to flush a packing buffer to get a pci
4005                  * flag out on the queue
4006                  */
4007                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4008                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4009                 if (flush_count)
4010                         qeth_flush_buffers(queue, start_index, flush_count);
4011         }
4012         /* at this point the queue is UNLOCKED again */
4013         if (queue->card->options.performance_stats && do_pack)
4014                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4015
4016         return rc;
4017 }
4018 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4019
4020 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4021                 struct qeth_reply *reply, unsigned long data)
4022 {
4023         struct qeth_ipa_cmd *cmd;
4024         struct qeth_ipacmd_setadpparms *setparms;
4025
4026         QETH_CARD_TEXT(card, 4, "prmadpcb");
4027
4028         cmd = (struct qeth_ipa_cmd *) data;
4029         setparms = &(cmd->data.setadapterparms);
4030
4031         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4032         if (cmd->hdr.return_code) {
4033                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4034                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4035         }
4036         card->info.promisc_mode = setparms->data.mode;
4037         return 0;
4038 }
4039
4040 void qeth_setadp_promisc_mode(struct qeth_card *card)
4041 {
4042         enum qeth_ipa_promisc_modes mode;
4043         struct net_device *dev = card->dev;
4044         struct qeth_cmd_buffer *iob;
4045         struct qeth_ipa_cmd *cmd;
4046
4047         QETH_CARD_TEXT(card, 4, "setprom");
4048
4049         if (((dev->flags & IFF_PROMISC) &&
4050              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4051             (!(dev->flags & IFF_PROMISC) &&
4052              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4053                 return;
4054         mode = SET_PROMISC_MODE_OFF;
4055         if (dev->flags & IFF_PROMISC)
4056                 mode = SET_PROMISC_MODE_ON;
4057         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4058
4059         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4060                         sizeof(struct qeth_ipacmd_setadpparms));
4061         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4062         cmd->data.setadapterparms.data.mode = mode;
4063         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4064 }
4065 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4066
4067 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4068 {
4069         struct qeth_card *card;
4070         char dbf_text[15];
4071
4072         card = dev->ml_priv;
4073
4074         QETH_CARD_TEXT(card, 4, "chgmtu");
4075         sprintf(dbf_text, "%8x", new_mtu);
4076         QETH_CARD_TEXT(card, 4, dbf_text);
4077
4078         if (new_mtu < 64)
4079                 return -EINVAL;
4080         if (new_mtu > 65535)
4081                 return -EINVAL;
4082         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4083             (!qeth_mtu_is_valid(card, new_mtu)))
4084                 return -EINVAL;
4085         dev->mtu = new_mtu;
4086         return 0;
4087 }
4088 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4089
4090 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4091 {
4092         struct qeth_card *card;
4093
4094         card = dev->ml_priv;
4095
4096         QETH_CARD_TEXT(card, 5, "getstat");
4097
4098         return &card->stats;
4099 }
4100 EXPORT_SYMBOL_GPL(qeth_get_stats);
4101
4102 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4103                 struct qeth_reply *reply, unsigned long data)
4104 {
4105         struct qeth_ipa_cmd *cmd;
4106
4107         QETH_CARD_TEXT(card, 4, "chgmaccb");
4108
4109         cmd = (struct qeth_ipa_cmd *) data;
4110         if (!card->options.layer2 ||
4111             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4112                 memcpy(card->dev->dev_addr,
4113                        &cmd->data.setadapterparms.data.change_addr.addr,
4114                        OSA_ADDR_LEN);
4115                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4116         }
4117         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4118         return 0;
4119 }
4120
4121 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4122 {
4123         int rc;
4124         struct qeth_cmd_buffer *iob;
4125         struct qeth_ipa_cmd *cmd;
4126
4127         QETH_CARD_TEXT(card, 4, "chgmac");
4128
4129         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4130                                    sizeof(struct qeth_ipacmd_setadpparms));
4131         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4132         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4133         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4134         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4135                card->dev->dev_addr, OSA_ADDR_LEN);
4136         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4137                                NULL);
4138         return rc;
4139 }
4140 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4141
4142 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4143                 struct qeth_reply *reply, unsigned long data)
4144 {
4145         struct qeth_ipa_cmd *cmd;
4146         struct qeth_set_access_ctrl *access_ctrl_req;
4147         int fallback = *(int *)reply->param;
4148
4149         QETH_CARD_TEXT(card, 4, "setaccb");
4150
4151         cmd = (struct qeth_ipa_cmd *) data;
4152         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4153         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4154         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4155         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4156                 cmd->data.setadapterparms.hdr.return_code);
4157         if (cmd->data.setadapterparms.hdr.return_code !=
4158                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4159                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4160                                 card->gdev->dev.kobj.name,
4161                                 access_ctrl_req->subcmd_code,
4162                                 cmd->data.setadapterparms.hdr.return_code);
4163         switch (cmd->data.setadapterparms.hdr.return_code) {
4164         case SET_ACCESS_CTRL_RC_SUCCESS:
4165                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4166                         dev_info(&card->gdev->dev,
4167                             "QDIO data connection isolation is deactivated\n");
4168                 } else {
4169                         dev_info(&card->gdev->dev,
4170                             "QDIO data connection isolation is activated\n");
4171                 }
4172                 break;
4173         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4174                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4175                                 "deactivated\n", dev_name(&card->gdev->dev));
4176                 if (fallback)
4177                         card->options.isolation = card->options.prev_isolation;
4178                 break;
4179         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4180                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4181                                 " activated\n", dev_name(&card->gdev->dev));
4182                 if (fallback)
4183                         card->options.isolation = card->options.prev_isolation;
4184                 break;
4185         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4186                 dev_err(&card->gdev->dev, "Adapter does not "
4187                         "support QDIO data connection isolation\n");
4188                 break;
4189         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4190                 dev_err(&card->gdev->dev,
4191                         "Adapter is dedicated. "
4192                         "QDIO data connection isolation not supported\n");
4193                 if (fallback)
4194                         card->options.isolation = card->options.prev_isolation;
4195                 break;
4196         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4197                 dev_err(&card->gdev->dev,
4198                         "TSO does not permit QDIO data connection isolation\n");
4199                 if (fallback)
4200                         card->options.isolation = card->options.prev_isolation;
4201                 break;
4202         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4203                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4204                         "support reflective relay mode\n");
4205                 if (fallback)
4206                         card->options.isolation = card->options.prev_isolation;
4207                 break;
4208         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4209                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4210                                         "enabled at the adjacent switch port");
4211                 if (fallback)
4212                         card->options.isolation = card->options.prev_isolation;
4213                 break;
4214         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4215                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4216                                         "at the adjacent switch failed\n");
4217                 break;
4218         default:
4219                 /* this should never happen */
4220                 if (fallback)
4221                         card->options.isolation = card->options.prev_isolation;
4222                 break;
4223         }
4224         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4225         return 0;
4226 }
4227
4228 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4229                 enum qeth_ipa_isolation_modes isolation, int fallback)
4230 {
4231         int rc;
4232         struct qeth_cmd_buffer *iob;
4233         struct qeth_ipa_cmd *cmd;
4234         struct qeth_set_access_ctrl *access_ctrl_req;
4235
4236         QETH_CARD_TEXT(card, 4, "setacctl");
4237
4238         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4239         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4240
4241         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4242                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4243                                    sizeof(struct qeth_set_access_ctrl));
4244         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4245         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4246         access_ctrl_req->subcmd_code = isolation;
4247
4248         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4249                                &fallback);
4250         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4251         return rc;
4252 }
4253
4254 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4255 {
4256         int rc = 0;
4257
4258         QETH_CARD_TEXT(card, 4, "setactlo");
4259
4260         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4261              card->info.type == QETH_CARD_TYPE_OSX) &&
4262              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4263                 rc = qeth_setadpparms_set_access_ctrl(card,
4264                         card->options.isolation, fallback);
4265                 if (rc) {
4266                         QETH_DBF_MESSAGE(3,
4267                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4268                                 card->gdev->dev.kobj.name,
4269                                 rc);
4270                         rc = -EOPNOTSUPP;
4271                 }
4272         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4273                 card->options.isolation = ISOLATION_MODE_NONE;
4274
4275                 dev_err(&card->gdev->dev, "Adapter does not "
4276                         "support QDIO data connection isolation\n");
4277                 rc = -EOPNOTSUPP;
4278         }
4279         return rc;
4280 }
4281 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4282
4283 void qeth_tx_timeout(struct net_device *dev)
4284 {
4285         struct qeth_card *card;
4286
4287         card = dev->ml_priv;
4288         QETH_CARD_TEXT(card, 4, "txtimeo");
4289         card->stats.tx_errors++;
4290         qeth_schedule_recovery(card);
4291 }
4292 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4293
4294 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4295 {
4296         struct qeth_card *card = dev->ml_priv;
4297         int rc = 0;
4298
4299         switch (regnum) {
4300         case MII_BMCR: /* Basic mode control register */
4301                 rc = BMCR_FULLDPLX;
4302                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4303                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4304                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4305                         rc |= BMCR_SPEED100;
4306                 break;
4307         case MII_BMSR: /* Basic mode status register */
4308                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4309                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4310                      BMSR_100BASE4;
4311                 break;
4312         case MII_PHYSID1: /* PHYS ID 1 */
4313                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4314                      dev->dev_addr[2];
4315                 rc = (rc >> 5) & 0xFFFF;
4316                 break;
4317         case MII_PHYSID2: /* PHYS ID 2 */
4318                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4319                 break;
4320         case MII_ADVERTISE: /* Advertisement control reg */
4321                 rc = ADVERTISE_ALL;
4322                 break;
4323         case MII_LPA: /* Link partner ability reg */
4324                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4325                      LPA_100BASE4 | LPA_LPACK;
4326                 break;
4327         case MII_EXPANSION: /* Expansion register */
4328                 break;
4329         case MII_DCOUNTER: /* disconnect counter */
4330                 break;
4331         case MII_FCSCOUNTER: /* false carrier counter */
4332                 break;
4333         case MII_NWAYTEST: /* N-way auto-neg test register */
4334                 break;
4335         case MII_RERRCOUNTER: /* rx error counter */
4336                 rc = card->stats.rx_errors;
4337                 break;
4338         case MII_SREVISION: /* silicon revision */
4339                 break;
4340         case MII_RESV1: /* reserved 1 */
4341                 break;
4342         case MII_LBRERROR: /* loopback, rx, bypass error */
4343                 break;
4344         case MII_PHYADDR: /* physical address */
4345                 break;
4346         case MII_RESV2: /* reserved 2 */
4347                 break;
4348         case MII_TPISTATUS: /* TPI status for 10mbps */
4349                 break;
4350         case MII_NCONFIG: /* network interface config */
4351                 break;
4352         default:
4353                 break;
4354         }
4355         return rc;
4356 }
4357 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4358
4359 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4360                 struct qeth_cmd_buffer *iob, int len,
4361                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4362                         unsigned long),
4363                 void *reply_param)
4364 {
4365         u16 s1, s2;
4366
4367         QETH_CARD_TEXT(card, 4, "sendsnmp");
4368
4369         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4370         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4371                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4372         /* adjust PDU length fields in IPA_PDU_HEADER */
4373         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4374         s2 = (u32) len;
4375         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4376         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4377         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4378         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4379         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4380                                       reply_cb, reply_param);
4381 }
4382
4383 static int qeth_snmp_command_cb(struct qeth_card *card,
4384                 struct qeth_reply *reply, unsigned long sdata)
4385 {
4386         struct qeth_ipa_cmd *cmd;
4387         struct qeth_arp_query_info *qinfo;
4388         struct qeth_snmp_cmd *snmp;
4389         unsigned char *data;
4390         __u16 data_len;
4391
4392         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4393
4394         cmd = (struct qeth_ipa_cmd *) sdata;
4395         data = (unsigned char *)((char *)cmd - reply->offset);
4396         qinfo = (struct qeth_arp_query_info *) reply->param;
4397         snmp = &cmd->data.setadapterparms.data.snmp;
4398
4399         if (cmd->hdr.return_code) {
4400                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4401                 return 0;
4402         }
4403         if (cmd->data.setadapterparms.hdr.return_code) {
4404                 cmd->hdr.return_code =
4405                         cmd->data.setadapterparms.hdr.return_code;
4406                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4407                 return 0;
4408         }
4409         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4410         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4411                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4412         else
4413                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4414
4415         /* check if there is enough room in userspace */
4416         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4417                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4418                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4419                 return 0;
4420         }
4421         QETH_CARD_TEXT_(card, 4, "snore%i",
4422                        cmd->data.setadapterparms.hdr.used_total);
4423         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4424                 cmd->data.setadapterparms.hdr.seq_no);
4425         /*copy entries to user buffer*/
4426         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4427                 memcpy(qinfo->udata + qinfo->udata_offset,
4428                        (char *)snmp,
4429                        data_len + offsetof(struct qeth_snmp_cmd, data));
4430                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4431         } else {
4432                 memcpy(qinfo->udata + qinfo->udata_offset,
4433                        (char *)&snmp->request, data_len);
4434         }
4435         qinfo->udata_offset += data_len;
4436         /* check if all replies received ... */
4437                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4438                                cmd->data.setadapterparms.hdr.used_total);
4439                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4440                                cmd->data.setadapterparms.hdr.seq_no);
4441         if (cmd->data.setadapterparms.hdr.seq_no <
4442             cmd->data.setadapterparms.hdr.used_total)
4443                 return 1;
4444         return 0;
4445 }
4446
4447 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4448 {
4449         struct qeth_cmd_buffer *iob;
4450         struct qeth_ipa_cmd *cmd;
4451         struct qeth_snmp_ureq *ureq;
4452         int req_len;
4453         struct qeth_arp_query_info qinfo = {0, };
4454         int rc = 0;
4455
4456         QETH_CARD_TEXT(card, 3, "snmpcmd");
4457
4458         if (card->info.guestlan)
4459                 return -EOPNOTSUPP;
4460
4461         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4462             (!card->options.layer2)) {
4463                 return -EOPNOTSUPP;
4464         }
4465         /* skip 4 bytes (data_len struct member) to get req_len */
4466         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4467                 return -EFAULT;
4468         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4469         if (IS_ERR(ureq)) {
4470                 QETH_CARD_TEXT(card, 2, "snmpnome");
4471                 return PTR_ERR(ureq);
4472         }
4473         qinfo.udata_len = ureq->hdr.data_len;
4474         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4475         if (!qinfo.udata) {
4476                 kfree(ureq);
4477                 return -ENOMEM;
4478         }
4479         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4480
4481         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4482                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4483         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4484         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4485         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4486                                     qeth_snmp_command_cb, (void *)&qinfo);
4487         if (rc)
4488                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4489                            QETH_CARD_IFNAME(card), rc);
4490         else {
4491                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4492                         rc = -EFAULT;
4493         }
4494
4495         kfree(ureq);
4496         kfree(qinfo.udata);
4497         return rc;
4498 }
4499 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4500
4501 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4502                 struct qeth_reply *reply, unsigned long data)
4503 {
4504         struct qeth_ipa_cmd *cmd;
4505         struct qeth_qoat_priv *priv;
4506         char *resdata;
4507         int resdatalen;
4508
4509         QETH_CARD_TEXT(card, 3, "qoatcb");
4510
4511         cmd = (struct qeth_ipa_cmd *)data;
4512         priv = (struct qeth_qoat_priv *)reply->param;
4513         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4514         resdata = (char *)data + 28;
4515
4516         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4517                 cmd->hdr.return_code = IPA_RC_FFFF;
4518                 return 0;
4519         }
4520
4521         memcpy((priv->buffer + priv->response_len), resdata,
4522                 resdatalen);
4523         priv->response_len += resdatalen;
4524
4525         if (cmd->data.setadapterparms.hdr.seq_no <
4526             cmd->data.setadapterparms.hdr.used_total)
4527                 return 1;
4528         return 0;
4529 }
4530
4531 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4532 {
4533         int rc = 0;
4534         struct qeth_cmd_buffer *iob;
4535         struct qeth_ipa_cmd *cmd;
4536         struct qeth_query_oat *oat_req;
4537         struct qeth_query_oat_data oat_data;
4538         struct qeth_qoat_priv priv;
4539         void __user *tmp;
4540
4541         QETH_CARD_TEXT(card, 3, "qoatcmd");
4542
4543         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4544                 rc = -EOPNOTSUPP;
4545                 goto out;
4546         }
4547
4548         if (copy_from_user(&oat_data, udata,
4549             sizeof(struct qeth_query_oat_data))) {
4550                         rc = -EFAULT;
4551                         goto out;
4552         }
4553
4554         priv.buffer_len = oat_data.buffer_len;
4555         priv.response_len = 0;
4556         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4557         if (!priv.buffer) {
4558                 rc = -ENOMEM;
4559                 goto out;
4560         }
4561
4562         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4563                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4564                                    sizeof(struct qeth_query_oat));
4565         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4566         oat_req = &cmd->data.setadapterparms.data.query_oat;
4567         oat_req->subcmd_code = oat_data.command;
4568
4569         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4570                                &priv);
4571         if (!rc) {
4572                 if (is_compat_task())
4573                         tmp = compat_ptr(oat_data.ptr);
4574                 else
4575                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4576
4577                 if (copy_to_user(tmp, priv.buffer,
4578                     priv.response_len)) {
4579                         rc = -EFAULT;
4580                         goto out_free;
4581                 }
4582
4583                 oat_data.response_len = priv.response_len;
4584
4585                 if (copy_to_user(udata, &oat_data,
4586                     sizeof(struct qeth_query_oat_data)))
4587                         rc = -EFAULT;
4588         } else
4589                 if (rc == IPA_RC_FFFF)
4590                         rc = -EFAULT;
4591
4592 out_free:
4593         kfree(priv.buffer);
4594 out:
4595         return rc;
4596 }
4597 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4598
4599 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4600 {
4601         switch (card->info.type) {
4602         case QETH_CARD_TYPE_IQD:
4603                 return 2;
4604         default:
4605                 return 0;
4606         }
4607 }
4608
4609 static void qeth_determine_capabilities(struct qeth_card *card)
4610 {
4611         int rc;
4612         int length;
4613         char *prcd;
4614         struct ccw_device *ddev;
4615         int ddev_offline = 0;
4616
4617         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4618         ddev = CARD_DDEV(card);
4619         if (!ddev->online) {
4620                 ddev_offline = 1;
4621                 rc = ccw_device_set_online(ddev);
4622                 if (rc) {
4623                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4624                         goto out;
4625                 }
4626         }
4627
4628         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4629         if (rc) {
4630                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4631                         dev_name(&card->gdev->dev), rc);
4632                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4633                 goto out_offline;
4634         }
4635         qeth_configure_unitaddr(card, prcd);
4636         if (ddev_offline)
4637                 qeth_configure_blkt_default(card, prcd);
4638         kfree(prcd);
4639
4640         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4641         if (rc)
4642                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4643
4644         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4645         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4646         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4647         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4648         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4649             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4650             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4651                 dev_info(&card->gdev->dev,
4652                         "Completion Queueing supported\n");
4653         } else {
4654                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4655         }
4656
4657
4658 out_offline:
4659         if (ddev_offline == 1)
4660                 ccw_device_set_offline(ddev);
4661 out:
4662         return;
4663 }
4664
4665 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4666         struct qdio_buffer **in_sbal_ptrs,
4667         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4668         int i;
4669
4670         if (card->options.cq == QETH_CQ_ENABLED) {
4671                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4672                              (card->qdio.no_in_queues - 1);
4673                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4674                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4675                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4676                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4677                 }
4678
4679                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4680         }
4681 }
4682
4683 static int qeth_qdio_establish(struct qeth_card *card)
4684 {
4685         struct qdio_initialize init_data;
4686         char *qib_param_field;
4687         struct qdio_buffer **in_sbal_ptrs;
4688         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4689         struct qdio_buffer **out_sbal_ptrs;
4690         int i, j, k;
4691         int rc = 0;
4692
4693         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4694
4695         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4696                               GFP_KERNEL);
4697         if (!qib_param_field) {
4698                 rc =  -ENOMEM;
4699                 goto out_free_nothing;
4700         }
4701
4702         qeth_create_qib_param_field(card, qib_param_field);
4703         qeth_create_qib_param_field_blkt(card, qib_param_field);
4704
4705         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4706                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4707                                GFP_KERNEL);
4708         if (!in_sbal_ptrs) {
4709                 rc = -ENOMEM;
4710                 goto out_free_qib_param;
4711         }
4712         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4713                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4714                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4715         }
4716
4717         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4718                                    GFP_KERNEL);
4719         if (!queue_start_poll) {
4720                 rc = -ENOMEM;
4721                 goto out_free_in_sbals;
4722         }
4723         for (i = 0; i < card->qdio.no_in_queues; ++i)
4724                 queue_start_poll[i] = card->discipline->start_poll;
4725
4726         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4727
4728         out_sbal_ptrs =
4729                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4730                         sizeof(void *), GFP_KERNEL);
4731         if (!out_sbal_ptrs) {
4732                 rc = -ENOMEM;
4733                 goto out_free_queue_start_poll;
4734         }
4735         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4736                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4737                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4738                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4739                 }
4740
4741         memset(&init_data, 0, sizeof(struct qdio_initialize));
4742         init_data.cdev                   = CARD_DDEV(card);
4743         init_data.q_format               = qeth_get_qdio_q_format(card);
4744         init_data.qib_param_field_format = 0;
4745         init_data.qib_param_field        = qib_param_field;
4746         init_data.no_input_qs            = card->qdio.no_in_queues;
4747         init_data.no_output_qs           = card->qdio.no_out_queues;
4748         init_data.input_handler          = card->discipline->input_handler;
4749         init_data.output_handler         = card->discipline->output_handler;
4750         init_data.queue_start_poll_array = queue_start_poll;
4751         init_data.int_parm               = (unsigned long) card;
4752         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4753         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4754         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4755         init_data.scan_threshold =
4756                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4757
4758         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4759                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4760                 rc = qdio_allocate(&init_data);
4761                 if (rc) {
4762                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4763                         goto out;
4764                 }
4765                 rc = qdio_establish(&init_data);
4766                 if (rc) {
4767                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4768                         qdio_free(CARD_DDEV(card));
4769                 }
4770         }
4771
4772         switch (card->options.cq) {
4773         case QETH_CQ_ENABLED:
4774                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4775                 break;
4776         case QETH_CQ_DISABLED:
4777                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4778                 break;
4779         default:
4780                 break;
4781         }
4782 out:
4783         kfree(out_sbal_ptrs);
4784 out_free_queue_start_poll:
4785         kfree(queue_start_poll);
4786 out_free_in_sbals:
4787         kfree(in_sbal_ptrs);
4788 out_free_qib_param:
4789         kfree(qib_param_field);
4790 out_free_nothing:
4791         return rc;
4792 }
4793
4794 static void qeth_core_free_card(struct qeth_card *card)
4795 {
4796
4797         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4798         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4799         qeth_clean_channel(&card->read);
4800         qeth_clean_channel(&card->write);
4801         if (card->dev)
4802                 free_netdev(card->dev);
4803         kfree(card->ip_tbd_list);
4804         qeth_free_qdio_buffers(card);
4805         unregister_service_level(&card->qeth_service_level);
4806         kfree(card);
4807 }
4808
4809 void qeth_trace_features(struct qeth_card *card)
4810 {
4811         QETH_CARD_TEXT(card, 2, "features");
4812         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4813         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4814         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4815         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4816         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4817         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4818         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4819 }
4820 EXPORT_SYMBOL_GPL(qeth_trace_features);
4821
4822 static struct ccw_device_id qeth_ids[] = {
4823         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4824                                         .driver_info = QETH_CARD_TYPE_OSD},
4825         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4826                                         .driver_info = QETH_CARD_TYPE_IQD},
4827         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4828                                         .driver_info = QETH_CARD_TYPE_OSN},
4829         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4830                                         .driver_info = QETH_CARD_TYPE_OSM},
4831         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4832                                         .driver_info = QETH_CARD_TYPE_OSX},
4833         {},
4834 };
4835 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4836
4837 static struct ccw_driver qeth_ccw_driver = {
4838         .driver = {
4839                 .owner = THIS_MODULE,
4840                 .name = "qeth",
4841         },
4842         .ids = qeth_ids,
4843         .probe = ccwgroup_probe_ccwdev,
4844         .remove = ccwgroup_remove_ccwdev,
4845 };
4846
4847 int qeth_core_hardsetup_card(struct qeth_card *card)
4848 {
4849         int retries = 3;
4850         int rc;
4851
4852         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4853         atomic_set(&card->force_alloc_skb, 0);
4854         qeth_update_from_chp_desc(card);
4855 retry:
4856         if (retries < 3)
4857                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4858                         dev_name(&card->gdev->dev));
4859         ccw_device_set_offline(CARD_DDEV(card));
4860         ccw_device_set_offline(CARD_WDEV(card));
4861         ccw_device_set_offline(CARD_RDEV(card));
4862         rc = ccw_device_set_online(CARD_RDEV(card));
4863         if (rc)
4864                 goto retriable;
4865         rc = ccw_device_set_online(CARD_WDEV(card));
4866         if (rc)
4867                 goto retriable;
4868         rc = ccw_device_set_online(CARD_DDEV(card));
4869         if (rc)
4870                 goto retriable;
4871         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4872 retriable:
4873         if (rc == -ERESTARTSYS) {
4874                 QETH_DBF_TEXT(SETUP, 2, "break1");
4875                 return rc;
4876         } else if (rc) {
4877                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4878                 if (--retries < 0)
4879                         goto out;
4880                 else
4881                         goto retry;
4882         }
4883         qeth_determine_capabilities(card);
4884         qeth_init_tokens(card);
4885         qeth_init_func_level(card);
4886         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4887         if (rc == -ERESTARTSYS) {
4888                 QETH_DBF_TEXT(SETUP, 2, "break2");
4889                 return rc;
4890         } else if (rc) {
4891                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4892                 if (--retries < 0)
4893                         goto out;
4894                 else
4895                         goto retry;
4896         }
4897         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4898         if (rc == -ERESTARTSYS) {
4899                 QETH_DBF_TEXT(SETUP, 2, "break3");
4900                 return rc;
4901         } else if (rc) {
4902                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4903                 if (--retries < 0)
4904                         goto out;
4905                 else
4906                         goto retry;
4907         }
4908         card->read_or_write_problem = 0;
4909         rc = qeth_mpc_initialize(card);
4910         if (rc) {
4911                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4912                 goto out;
4913         }
4914
4915         card->options.ipa4.supported_funcs = 0;
4916         card->options.adp.supported_funcs = 0;
4917         card->info.diagass_support = 0;
4918         qeth_query_ipassists(card, QETH_PROT_IPV4);
4919         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4920                 qeth_query_setadapterparms(card);
4921         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4922                 qeth_query_setdiagass(card);
4923         return 0;
4924 out:
4925         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4926                 "an error on the device\n");
4927         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4928                 dev_name(&card->gdev->dev), rc);
4929         return rc;
4930 }
4931 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4932
4933 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4934                 struct qdio_buffer_element *element,
4935                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4936 {
4937         struct page *page = virt_to_page(element->addr);
4938         if (*pskb == NULL) {
4939                 if (qethbuffer->rx_skb) {
4940                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4941                         *pskb = qethbuffer->rx_skb;
4942                         qethbuffer->rx_skb = NULL;
4943                 } else {
4944                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4945                         if (!(*pskb))
4946                                 return -ENOMEM;
4947                 }
4948
4949                 skb_reserve(*pskb, ETH_HLEN);
4950                 if (data_len <= QETH_RX_PULL_LEN) {
4951                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4952                                 data_len);
4953                 } else {
4954                         get_page(page);
4955                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4956                                element->addr + offset, QETH_RX_PULL_LEN);
4957                         skb_fill_page_desc(*pskb, *pfrag, page,
4958                                 offset + QETH_RX_PULL_LEN,
4959                                 data_len - QETH_RX_PULL_LEN);
4960                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4961                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4962                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4963                         (*pfrag)++;
4964                 }
4965         } else {
4966                 get_page(page);
4967                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4968                 (*pskb)->data_len += data_len;
4969                 (*pskb)->len      += data_len;
4970                 (*pskb)->truesize += data_len;
4971                 (*pfrag)++;
4972         }
4973
4974
4975         return 0;
4976 }
4977
4978 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4979                 struct qeth_qdio_buffer *qethbuffer,
4980                 struct qdio_buffer_element **__element, int *__offset,
4981                 struct qeth_hdr **hdr)
4982 {
4983         struct qdio_buffer_element *element = *__element;
4984         struct qdio_buffer *buffer = qethbuffer->buffer;
4985         int offset = *__offset;
4986         struct sk_buff *skb = NULL;
4987         int skb_len = 0;
4988         void *data_ptr;
4989         int data_len;
4990         int headroom = 0;
4991         int use_rx_sg = 0;
4992         int frag = 0;
4993
4994         /* qeth_hdr must not cross element boundaries */
4995         if (element->length < offset + sizeof(struct qeth_hdr)) {
4996                 if (qeth_is_last_sbale(element))
4997                         return NULL;
4998                 element++;
4999                 offset = 0;
5000                 if (element->length < sizeof(struct qeth_hdr))
5001                         return NULL;
5002         }
5003         *hdr = element->addr + offset;
5004
5005         offset += sizeof(struct qeth_hdr);
5006         switch ((*hdr)->hdr.l2.id) {
5007         case QETH_HEADER_TYPE_LAYER2:
5008                 skb_len = (*hdr)->hdr.l2.pkt_length;
5009                 break;
5010         case QETH_HEADER_TYPE_LAYER3:
5011                 skb_len = (*hdr)->hdr.l3.length;
5012                 headroom = ETH_HLEN;
5013                 break;
5014         case QETH_HEADER_TYPE_OSN:
5015                 skb_len = (*hdr)->hdr.osn.pdu_length;
5016                 headroom = sizeof(struct qeth_hdr);
5017                 break;
5018         default:
5019                 break;
5020         }
5021
5022         if (!skb_len)
5023                 return NULL;
5024
5025         if (((skb_len >= card->options.rx_sg_cb) &&
5026              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5027              (!atomic_read(&card->force_alloc_skb))) ||
5028             (card->options.cq == QETH_CQ_ENABLED)) {
5029                 use_rx_sg = 1;
5030         } else {
5031                 skb = dev_alloc_skb(skb_len + headroom);
5032                 if (!skb)
5033                         goto no_mem;
5034                 if (headroom)
5035                         skb_reserve(skb, headroom);
5036         }
5037
5038         data_ptr = element->addr + offset;
5039         while (skb_len) {
5040                 data_len = min(skb_len, (int)(element->length - offset));
5041                 if (data_len) {
5042                         if (use_rx_sg) {
5043                                 if (qeth_create_skb_frag(qethbuffer, element,
5044                                     &skb, offset, &frag, data_len))
5045                                         goto no_mem;
5046                         } else {
5047                                 memcpy(skb_put(skb, data_len), data_ptr,
5048                                         data_len);
5049                         }
5050                 }
5051                 skb_len -= data_len;
5052                 if (skb_len) {
5053                         if (qeth_is_last_sbale(element)) {
5054                                 QETH_CARD_TEXT(card, 4, "unexeob");
5055                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5056                                 dev_kfree_skb_any(skb);
5057                                 card->stats.rx_errors++;
5058                                 return NULL;
5059                         }
5060                         element++;
5061                         offset = 0;
5062                         data_ptr = element->addr;
5063                 } else {
5064                         offset += data_len;
5065                 }
5066         }
5067         *__element = element;
5068         *__offset = offset;
5069         if (use_rx_sg && card->options.performance_stats) {
5070                 card->perf_stats.sg_skbs_rx++;
5071                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5072         }
5073         return skb;
5074 no_mem:
5075         if (net_ratelimit()) {
5076                 QETH_CARD_TEXT(card, 2, "noskbmem");
5077         }
5078         card->stats.rx_dropped++;
5079         return NULL;
5080 }
5081 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5082
5083 static void qeth_unregister_dbf_views(void)
5084 {
5085         int x;
5086         for (x = 0; x < QETH_DBF_INFOS; x++) {
5087                 debug_unregister(qeth_dbf[x].id);
5088                 qeth_dbf[x].id = NULL;
5089         }
5090 }
5091
5092 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5093 {
5094         char dbf_txt_buf[32];
5095         va_list args;
5096
5097         if (level > id->level)
5098                 return;
5099         va_start(args, fmt);
5100         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5101         va_end(args);
5102         debug_text_event(id, level, dbf_txt_buf);
5103 }
5104 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5105
5106 static int qeth_register_dbf_views(void)
5107 {
5108         int ret;
5109         int x;
5110
5111         for (x = 0; x < QETH_DBF_INFOS; x++) {
5112                 /* register the areas */
5113                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5114                                                 qeth_dbf[x].pages,
5115                                                 qeth_dbf[x].areas,
5116                                                 qeth_dbf[x].len);
5117                 if (qeth_dbf[x].id == NULL) {
5118                         qeth_unregister_dbf_views();
5119                         return -ENOMEM;
5120                 }
5121
5122                 /* register a view */
5123                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5124                 if (ret) {
5125                         qeth_unregister_dbf_views();
5126                         return ret;
5127                 }
5128
5129                 /* set a passing level */
5130                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5131         }
5132
5133         return 0;
5134 }
5135
5136 int qeth_core_load_discipline(struct qeth_card *card,
5137                 enum qeth_discipline_id discipline)
5138 {
5139         int rc = 0;
5140         mutex_lock(&qeth_mod_mutex);
5141         switch (discipline) {
5142         case QETH_DISCIPLINE_LAYER3:
5143                 card->discipline = try_then_request_module(
5144                         symbol_get(qeth_l3_discipline), "qeth_l3");
5145                 break;
5146         case QETH_DISCIPLINE_LAYER2:
5147                 card->discipline = try_then_request_module(
5148                         symbol_get(qeth_l2_discipline), "qeth_l2");
5149                 break;
5150         }
5151         if (!card->discipline) {
5152                 dev_err(&card->gdev->dev, "There is no kernel module to "
5153                         "support discipline %d\n", discipline);
5154                 rc = -EINVAL;
5155         }
5156         mutex_unlock(&qeth_mod_mutex);
5157         return rc;
5158 }
5159
5160 void qeth_core_free_discipline(struct qeth_card *card)
5161 {
5162         if (card->options.layer2)
5163                 symbol_put(qeth_l2_discipline);
5164         else
5165                 symbol_put(qeth_l3_discipline);
5166         card->discipline = NULL;
5167 }
5168
5169 static const struct device_type qeth_generic_devtype = {
5170         .name = "qeth_generic",
5171         .groups = qeth_generic_attr_groups,
5172 };
5173 static const struct device_type qeth_osn_devtype = {
5174         .name = "qeth_osn",
5175         .groups = qeth_osn_attr_groups,
5176 };
5177
5178 #define DBF_NAME_LEN    20
5179
5180 struct qeth_dbf_entry {
5181         char dbf_name[DBF_NAME_LEN];
5182         debug_info_t *dbf_info;
5183         struct list_head dbf_list;
5184 };
5185
5186 static LIST_HEAD(qeth_dbf_list);
5187 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5188
5189 static debug_info_t *qeth_get_dbf_entry(char *name)
5190 {
5191         struct qeth_dbf_entry *entry;
5192         debug_info_t *rc = NULL;
5193
5194         mutex_lock(&qeth_dbf_list_mutex);
5195         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5196                 if (strcmp(entry->dbf_name, name) == 0) {
5197                         rc = entry->dbf_info;
5198                         break;
5199                 }
5200         }
5201         mutex_unlock(&qeth_dbf_list_mutex);
5202         return rc;
5203 }
5204
5205 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5206 {
5207         struct qeth_dbf_entry *new_entry;
5208
5209         card->debug = debug_register(name, 2, 1, 8);
5210         if (!card->debug) {
5211                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5212                 goto err;
5213         }
5214         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5215                 goto err_dbg;
5216         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5217         if (!new_entry)
5218                 goto err_dbg;
5219         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5220         new_entry->dbf_info = card->debug;
5221         mutex_lock(&qeth_dbf_list_mutex);
5222         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5223         mutex_unlock(&qeth_dbf_list_mutex);
5224
5225         return 0;
5226
5227 err_dbg:
5228         debug_unregister(card->debug);
5229 err:
5230         return -ENOMEM;
5231 }
5232
5233 static void qeth_clear_dbf_list(void)
5234 {
5235         struct qeth_dbf_entry *entry, *tmp;
5236
5237         mutex_lock(&qeth_dbf_list_mutex);
5238         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5239                 list_del(&entry->dbf_list);
5240                 debug_unregister(entry->dbf_info);
5241                 kfree(entry);
5242         }
5243         mutex_unlock(&qeth_dbf_list_mutex);
5244 }
5245
5246 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5247 {
5248         struct qeth_card *card;
5249         struct device *dev;
5250         int rc;
5251         unsigned long flags;
5252         char dbf_name[DBF_NAME_LEN];
5253
5254         QETH_DBF_TEXT(SETUP, 2, "probedev");
5255
5256         dev = &gdev->dev;
5257         if (!get_device(dev))
5258                 return -ENODEV;
5259
5260         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5261
5262         card = qeth_alloc_card();
5263         if (!card) {
5264                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5265                 rc = -ENOMEM;
5266                 goto err_dev;
5267         }
5268
5269         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5270                 dev_name(&gdev->dev));
5271         card->debug = qeth_get_dbf_entry(dbf_name);
5272         if (!card->debug) {
5273                 rc = qeth_add_dbf_entry(card, dbf_name);
5274                 if (rc)
5275                         goto err_card;
5276         }
5277
5278         card->read.ccwdev  = gdev->cdev[0];
5279         card->write.ccwdev = gdev->cdev[1];
5280         card->data.ccwdev  = gdev->cdev[2];
5281         dev_set_drvdata(&gdev->dev, card);
5282         card->gdev = gdev;
5283         gdev->cdev[0]->handler = qeth_irq;
5284         gdev->cdev[1]->handler = qeth_irq;
5285         gdev->cdev[2]->handler = qeth_irq;
5286
5287         rc = qeth_determine_card_type(card);
5288         if (rc) {
5289                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5290                 goto err_card;
5291         }
5292         rc = qeth_setup_card(card);
5293         if (rc) {
5294                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5295                 goto err_card;
5296         }
5297
5298         if (card->info.type == QETH_CARD_TYPE_OSN)
5299                 gdev->dev.type = &qeth_osn_devtype;
5300         else
5301                 gdev->dev.type = &qeth_generic_devtype;
5302
5303         switch (card->info.type) {
5304         case QETH_CARD_TYPE_OSN:
5305         case QETH_CARD_TYPE_OSM:
5306                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5307                 if (rc)
5308                         goto err_card;
5309                 rc = card->discipline->setup(card->gdev);
5310                 if (rc)
5311                         goto err_disc;
5312         case QETH_CARD_TYPE_OSD:
5313         case QETH_CARD_TYPE_OSX:
5314         default:
5315                 break;
5316         }
5317
5318         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5319         list_add_tail(&card->list, &qeth_core_card_list.list);
5320         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5321
5322         qeth_determine_capabilities(card);
5323         return 0;
5324
5325 err_disc:
5326         qeth_core_free_discipline(card);
5327 err_card:
5328         qeth_core_free_card(card);
5329 err_dev:
5330         put_device(dev);
5331         return rc;
5332 }
5333
5334 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5335 {
5336         unsigned long flags;
5337         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5338
5339         QETH_DBF_TEXT(SETUP, 2, "removedv");
5340
5341         if (card->discipline) {
5342                 card->discipline->remove(gdev);
5343                 qeth_core_free_discipline(card);
5344         }
5345
5346         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5347         list_del(&card->list);
5348         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5349         qeth_core_free_card(card);
5350         dev_set_drvdata(&gdev->dev, NULL);
5351         put_device(&gdev->dev);
5352         return;
5353 }
5354
5355 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5356 {
5357         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5358         int rc = 0;
5359         int def_discipline;
5360
5361         if (!card->discipline) {
5362                 if (card->info.type == QETH_CARD_TYPE_IQD)
5363                         def_discipline = QETH_DISCIPLINE_LAYER3;
5364                 else
5365                         def_discipline = QETH_DISCIPLINE_LAYER2;
5366                 rc = qeth_core_load_discipline(card, def_discipline);
5367                 if (rc)
5368                         goto err;
5369                 rc = card->discipline->setup(card->gdev);
5370                 if (rc)
5371                         goto err;
5372         }
5373         rc = card->discipline->set_online(gdev);
5374 err:
5375         return rc;
5376 }
5377
5378 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5379 {
5380         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5381         return card->discipline->set_offline(gdev);
5382 }
5383
5384 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5385 {
5386         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5387         if (card->discipline && card->discipline->shutdown)
5388                 card->discipline->shutdown(gdev);
5389 }
5390
5391 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5392 {
5393         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5394         if (card->discipline && card->discipline->prepare)
5395                 return card->discipline->prepare(gdev);
5396         return 0;
5397 }
5398
5399 static void qeth_core_complete(struct ccwgroup_device *gdev)
5400 {
5401         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5402         if (card->discipline && card->discipline->complete)
5403                 card->discipline->complete(gdev);
5404 }
5405
5406 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5407 {
5408         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5409         if (card->discipline && card->discipline->freeze)
5410                 return card->discipline->freeze(gdev);
5411         return 0;
5412 }
5413
5414 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5415 {
5416         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5417         if (card->discipline && card->discipline->thaw)
5418                 return card->discipline->thaw(gdev);
5419         return 0;
5420 }
5421
5422 static int qeth_core_restore(struct ccwgroup_device *gdev)
5423 {
5424         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5425         if (card->discipline && card->discipline->restore)
5426                 return card->discipline->restore(gdev);
5427         return 0;
5428 }
5429
5430 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5431         .driver = {
5432                 .owner = THIS_MODULE,
5433                 .name = "qeth",
5434         },
5435         .setup = qeth_core_probe_device,
5436         .remove = qeth_core_remove_device,
5437         .set_online = qeth_core_set_online,
5438         .set_offline = qeth_core_set_offline,
5439         .shutdown = qeth_core_shutdown,
5440         .prepare = qeth_core_prepare,
5441         .complete = qeth_core_complete,
5442         .freeze = qeth_core_freeze,
5443         .thaw = qeth_core_thaw,
5444         .restore = qeth_core_restore,
5445 };
5446
5447 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5448                                             const char *buf, size_t count)
5449 {
5450         int err;
5451
5452         err = ccwgroup_create_dev(qeth_core_root_dev,
5453                                   &qeth_core_ccwgroup_driver, 3, buf);
5454
5455         return err ? err : count;
5456 }
5457 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5458
5459 static struct attribute *qeth_drv_attrs[] = {
5460         &driver_attr_group.attr,
5461         NULL,
5462 };
5463 static struct attribute_group qeth_drv_attr_group = {
5464         .attrs = qeth_drv_attrs,
5465 };
5466 static const struct attribute_group *qeth_drv_attr_groups[] = {
5467         &qeth_drv_attr_group,
5468         NULL,
5469 };
5470
5471 static struct {
5472         const char str[ETH_GSTRING_LEN];
5473 } qeth_ethtool_stats_keys[] = {
5474 /*  0 */{"rx skbs"},
5475         {"rx buffers"},
5476         {"tx skbs"},
5477         {"tx buffers"},
5478         {"tx skbs no packing"},
5479         {"tx buffers no packing"},
5480         {"tx skbs packing"},
5481         {"tx buffers packing"},
5482         {"tx sg skbs"},
5483         {"tx sg frags"},
5484 /* 10 */{"rx sg skbs"},
5485         {"rx sg frags"},
5486         {"rx sg page allocs"},
5487         {"tx large kbytes"},
5488         {"tx large count"},
5489         {"tx pk state ch n->p"},
5490         {"tx pk state ch p->n"},
5491         {"tx pk watermark low"},
5492         {"tx pk watermark high"},
5493         {"queue 0 buffer usage"},
5494 /* 20 */{"queue 1 buffer usage"},
5495         {"queue 2 buffer usage"},
5496         {"queue 3 buffer usage"},
5497         {"rx poll time"},
5498         {"rx poll count"},
5499         {"rx do_QDIO time"},
5500         {"rx do_QDIO count"},
5501         {"tx handler time"},
5502         {"tx handler count"},
5503         {"tx time"},
5504 /* 30 */{"tx count"},
5505         {"tx do_QDIO time"},
5506         {"tx do_QDIO count"},
5507         {"tx csum"},
5508         {"tx lin"},
5509         {"cq handler count"},
5510         {"cq handler time"}
5511 };
5512
5513 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5514 {
5515         switch (stringset) {
5516         case ETH_SS_STATS:
5517                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5518         default:
5519                 return -EINVAL;
5520         }
5521 }
5522 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5523
5524 void qeth_core_get_ethtool_stats(struct net_device *dev,
5525                 struct ethtool_stats *stats, u64 *data)
5526 {
5527         struct qeth_card *card = dev->ml_priv;
5528         data[0] = card->stats.rx_packets -
5529                                 card->perf_stats.initial_rx_packets;
5530         data[1] = card->perf_stats.bufs_rec;
5531         data[2] = card->stats.tx_packets -
5532                                 card->perf_stats.initial_tx_packets;
5533         data[3] = card->perf_stats.bufs_sent;
5534         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5535                         - card->perf_stats.skbs_sent_pack;
5536         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5537         data[6] = card->perf_stats.skbs_sent_pack;
5538         data[7] = card->perf_stats.bufs_sent_pack;
5539         data[8] = card->perf_stats.sg_skbs_sent;
5540         data[9] = card->perf_stats.sg_frags_sent;
5541         data[10] = card->perf_stats.sg_skbs_rx;
5542         data[11] = card->perf_stats.sg_frags_rx;
5543         data[12] = card->perf_stats.sg_alloc_page_rx;
5544         data[13] = (card->perf_stats.large_send_bytes >> 10);
5545         data[14] = card->perf_stats.large_send_cnt;
5546         data[15] = card->perf_stats.sc_dp_p;
5547         data[16] = card->perf_stats.sc_p_dp;
5548         data[17] = QETH_LOW_WATERMARK_PACK;
5549         data[18] = QETH_HIGH_WATERMARK_PACK;
5550         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5551         data[20] = (card->qdio.no_out_queues > 1) ?
5552                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5553         data[21] = (card->qdio.no_out_queues > 2) ?
5554                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5555         data[22] = (card->qdio.no_out_queues > 3) ?
5556                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5557         data[23] = card->perf_stats.inbound_time;
5558         data[24] = card->perf_stats.inbound_cnt;
5559         data[25] = card->perf_stats.inbound_do_qdio_time;
5560         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5561         data[27] = card->perf_stats.outbound_handler_time;
5562         data[28] = card->perf_stats.outbound_handler_cnt;
5563         data[29] = card->perf_stats.outbound_time;
5564         data[30] = card->perf_stats.outbound_cnt;
5565         data[31] = card->perf_stats.outbound_do_qdio_time;
5566         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5567         data[33] = card->perf_stats.tx_csum;
5568         data[34] = card->perf_stats.tx_lin;
5569         data[35] = card->perf_stats.cq_cnt;
5570         data[36] = card->perf_stats.cq_time;
5571 }
5572 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5573
5574 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5575 {
5576         switch (stringset) {
5577         case ETH_SS_STATS:
5578                 memcpy(data, &qeth_ethtool_stats_keys,
5579                         sizeof(qeth_ethtool_stats_keys));
5580                 break;
5581         default:
5582                 WARN_ON(1);
5583                 break;
5584         }
5585 }
5586 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5587
5588 void qeth_core_get_drvinfo(struct net_device *dev,
5589                 struct ethtool_drvinfo *info)
5590 {
5591         struct qeth_card *card = dev->ml_priv;
5592
5593         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5594                 sizeof(info->driver));
5595         strlcpy(info->version, "1.0", sizeof(info->version));
5596         strlcpy(info->fw_version, card->info.mcl_level,
5597                 sizeof(info->fw_version));
5598         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5599                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5600 }
5601 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5602
5603 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5604                                         struct ethtool_cmd *ecmd)
5605 {
5606         struct qeth_card *card = netdev->ml_priv;
5607         enum qeth_link_types link_type;
5608
5609         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5610                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5611         else
5612                 link_type = card->info.link_type;
5613
5614         ecmd->transceiver = XCVR_INTERNAL;
5615         ecmd->supported = SUPPORTED_Autoneg;
5616         ecmd->advertising = ADVERTISED_Autoneg;
5617         ecmd->duplex = DUPLEX_FULL;
5618         ecmd->autoneg = AUTONEG_ENABLE;
5619
5620         switch (link_type) {
5621         case QETH_LINK_TYPE_FAST_ETH:
5622         case QETH_LINK_TYPE_LANE_ETH100:
5623                 ecmd->supported |= SUPPORTED_10baseT_Half |
5624                                         SUPPORTED_10baseT_Full |
5625                                         SUPPORTED_100baseT_Half |
5626                                         SUPPORTED_100baseT_Full |
5627                                         SUPPORTED_TP;
5628                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5629                                         ADVERTISED_10baseT_Full |
5630                                         ADVERTISED_100baseT_Half |
5631                                         ADVERTISED_100baseT_Full |
5632                                         ADVERTISED_TP;
5633                 ecmd->speed = SPEED_100;
5634                 ecmd->port = PORT_TP;
5635                 break;
5636
5637         case QETH_LINK_TYPE_GBIT_ETH:
5638         case QETH_LINK_TYPE_LANE_ETH1000:
5639                 ecmd->supported |= SUPPORTED_10baseT_Half |
5640                                         SUPPORTED_10baseT_Full |
5641                                         SUPPORTED_100baseT_Half |
5642                                         SUPPORTED_100baseT_Full |
5643                                         SUPPORTED_1000baseT_Half |
5644                                         SUPPORTED_1000baseT_Full |
5645                                         SUPPORTED_FIBRE;
5646                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5647                                         ADVERTISED_10baseT_Full |
5648                                         ADVERTISED_100baseT_Half |
5649                                         ADVERTISED_100baseT_Full |
5650                                         ADVERTISED_1000baseT_Half |
5651                                         ADVERTISED_1000baseT_Full |
5652                                         ADVERTISED_FIBRE;
5653                 ecmd->speed = SPEED_1000;
5654                 ecmd->port = PORT_FIBRE;
5655                 break;
5656
5657         case QETH_LINK_TYPE_10GBIT_ETH:
5658                 ecmd->supported |= SUPPORTED_10baseT_Half |
5659                                         SUPPORTED_10baseT_Full |
5660                                         SUPPORTED_100baseT_Half |
5661                                         SUPPORTED_100baseT_Full |
5662                                         SUPPORTED_1000baseT_Half |
5663                                         SUPPORTED_1000baseT_Full |
5664                                         SUPPORTED_10000baseT_Full |
5665                                         SUPPORTED_FIBRE;
5666                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5667                                         ADVERTISED_10baseT_Full |
5668                                         ADVERTISED_100baseT_Half |
5669                                         ADVERTISED_100baseT_Full |
5670                                         ADVERTISED_1000baseT_Half |
5671                                         ADVERTISED_1000baseT_Full |
5672                                         ADVERTISED_10000baseT_Full |
5673                                         ADVERTISED_FIBRE;
5674                 ecmd->speed = SPEED_10000;
5675                 ecmd->port = PORT_FIBRE;
5676                 break;
5677
5678         default:
5679                 ecmd->supported |= SUPPORTED_10baseT_Half |
5680                                         SUPPORTED_10baseT_Full |
5681                                         SUPPORTED_TP;
5682                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5683                                         ADVERTISED_10baseT_Full |
5684                                         ADVERTISED_TP;
5685                 ecmd->speed = SPEED_10;
5686                 ecmd->port = PORT_TP;
5687         }
5688
5689         return 0;
5690 }
5691 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5692
5693 static int __init qeth_core_init(void)
5694 {
5695         int rc;
5696
5697         pr_info("loading core functions\n");
5698         INIT_LIST_HEAD(&qeth_core_card_list.list);
5699         INIT_LIST_HEAD(&qeth_dbf_list);
5700         rwlock_init(&qeth_core_card_list.rwlock);
5701         mutex_init(&qeth_mod_mutex);
5702
5703         qeth_wq = create_singlethread_workqueue("qeth_wq");
5704
5705         rc = qeth_register_dbf_views();
5706         if (rc)
5707                 goto out_err;
5708         qeth_core_root_dev = root_device_register("qeth");
5709         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5710         if (rc)
5711                 goto register_err;
5712         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5713                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5714         if (!qeth_core_header_cache) {
5715                 rc = -ENOMEM;
5716                 goto slab_err;
5717         }
5718         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5719                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5720         if (!qeth_qdio_outbuf_cache) {
5721                 rc = -ENOMEM;
5722                 goto cqslab_err;
5723         }
5724         rc = ccw_driver_register(&qeth_ccw_driver);
5725         if (rc)
5726                 goto ccw_err;
5727         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5728         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5729         if (rc)
5730                 goto ccwgroup_err;
5731
5732         return 0;
5733
5734 ccwgroup_err:
5735         ccw_driver_unregister(&qeth_ccw_driver);
5736 ccw_err:
5737         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5738 cqslab_err:
5739         kmem_cache_destroy(qeth_core_header_cache);
5740 slab_err:
5741         root_device_unregister(qeth_core_root_dev);
5742 register_err:
5743         qeth_unregister_dbf_views();
5744 out_err:
5745         pr_err("Initializing the qeth device driver failed\n");
5746         return rc;
5747 }
5748
5749 static void __exit qeth_core_exit(void)
5750 {
5751         qeth_clear_dbf_list();
5752         destroy_workqueue(qeth_wq);
5753         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5754         ccw_driver_unregister(&qeth_ccw_driver);
5755         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5756         kmem_cache_destroy(qeth_core_header_cache);
5757         root_device_unregister(qeth_core_root_dev);
5758         qeth_unregister_dbf_views();
5759         pr_info("core functions removed\n");
5760 }
5761
5762 module_init(qeth_core_init);
5763 module_exit(qeth_core_exit);
5764 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5765 MODULE_DESCRIPTION("qeth core functions");
5766 MODULE_LICENSE("GPL");