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 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_SETBRIDGEPORT:
 619                                 if (cmd->data.sbp.hdr.command_code ==
 620                                         IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
 621                                         qeth_bridge_state_change(card, cmd);
 622                                         return NULL;
 623                                 } else
 624                                         return cmd;
 625                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 626                                 qeth_bridge_host_event(card, cmd);
 627                                 return NULL;
 628                         case IPA_CMD_MODCCID:
 629                                 return cmd;
 630                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 631                                 QETH_CARD_TEXT(card, 3, "irla");
 632                                 break;
 633                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 634                                 QETH_CARD_TEXT(card, 3, "urla");
 635                                 break;
 636                         default:
 637                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 638                                            "but not a reply!\n");
 639                                 break;
 640                         }
 641                 }
 642         }
 643         return cmd;
 644 }
 645
 646 void qeth_clear_ipacmd_list(struct qeth_card *card)
 647 {
 648         struct qeth_reply *reply, *r;
 649         unsigned long flags;
 650
 651         QETH_CARD_TEXT(card, 4, "clipalst");
 652
 653         spin_lock_irqsave(&card->lock, flags);
 654         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 655                 qeth_get_reply(reply);
 656                 reply->rc = -EIO;
 657                 atomic_inc(&reply->received);
 658                 list_del_init(&reply->list);
 659                 wake_up(&reply->wait_q);
 660                 qeth_put_reply(reply);
 661         }
 662         spin_unlock_irqrestore(&card->lock, flags);
 663         atomic_set(&card->write.irq_pending, 0);
 664 }
 665 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 666
 667 static int qeth_check_idx_response(struct qeth_card *card,
 668         unsigned char *buffer)
 669 {
 670         if (!buffer)
 671                 return 0;
 672
 673         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 674         if ((buffer[2] & 0xc0) == 0xc0) {
 675                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 676                            "with cause code 0x%02x%s\n",
 677                            buffer[4],
 678                            ((buffer[4] == 0x22) ?
 679                             " -- try another portname" : ""));
 680                 QETH_CARD_TEXT(card, 2, "ckidxres");
 681                 QETH_CARD_TEXT(card, 2, " idxterm");
 682                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 683                 if (buffer[4] == 0xf6) {
 684                         dev_err(&card->gdev->dev,
 685                         "The qeth device is not configured "
 686                         "for the OSI layer required by z/VM\n");
 687                         return -EPERM;
 688                 }
 689                 return -EIO;
 690         }
 691         return 0;
 692 }
 693
 694 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 695                 __u32 len)
 696 {
 697         struct qeth_card *card;
 698
 699         card = CARD_FROM_CDEV(channel->ccwdev);
 700         QETH_CARD_TEXT(card, 4, "setupccw");
 701         if (channel == &card->read)
 702                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 703         else
 704                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 705         channel->ccw.count = len;
 706         channel->ccw.cda = (__u32) __pa(iob);
 707 }
 708
 709 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 710 {
 711         __u8 index;
 712
 713         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 714         index = channel->io_buf_no;
 715         do {
 716                 if (channel->iob[index].state == BUF_STATE_FREE) {
 717                         channel->iob[index].state = BUF_STATE_LOCKED;
 718                         channel->io_buf_no = (channel->io_buf_no + 1) %
 719                                 QETH_CMD_BUFFER_NO;
 720                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 721                         return channel->iob + index;
 722                 }
 723                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 724         } while (index != channel->io_buf_no);
 725
 726         return NULL;
 727 }
 728
 729 void qeth_release_buffer(struct qeth_channel *channel,
 730                 struct qeth_cmd_buffer *iob)
 731 {
 732         unsigned long flags;
 733
 734         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 735         spin_lock_irqsave(&channel->iob_lock, flags);
 736         memset(iob->data, 0, QETH_BUFSIZE);
 737         iob->state = BUF_STATE_FREE;
 738         iob->callback = qeth_send_control_data_cb;
 739         iob->rc = 0;
 740         spin_unlock_irqrestore(&channel->iob_lock, flags);
 741         wake_up(&channel->wait_q);
 742 }
 743 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 744
 745 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 746 {
 747         struct qeth_cmd_buffer *buffer = NULL;
 748         unsigned long flags;
 749
 750         spin_lock_irqsave(&channel->iob_lock, flags);
 751         buffer = __qeth_get_buffer(channel);
 752         spin_unlock_irqrestore(&channel->iob_lock, flags);
 753         return buffer;
 754 }
 755
 756 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 757 {
 758         struct qeth_cmd_buffer *buffer;
 759         wait_event(channel->wait_q,
 760                    ((buffer = qeth_get_buffer(channel)) != NULL));
 761         return buffer;
 762 }
 763 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 764
 765 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 766 {
 767         int cnt;
 768
 769         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 770                 qeth_release_buffer(channel, &channel->iob[cnt]);
 771         channel->buf_no = 0;
 772         channel->io_buf_no = 0;
 773 }
 774 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 775
 776 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 777                   struct qeth_cmd_buffer *iob)
 778 {
 779         struct qeth_card *card;
 780         struct qeth_reply *reply, *r;
 781         struct qeth_ipa_cmd *cmd;
 782         unsigned long flags;
 783         int keep_reply;
 784         int rc = 0;
 785
 786         card = CARD_FROM_CDEV(channel->ccwdev);
 787         QETH_CARD_TEXT(card, 4, "sndctlcb");
 788         rc = qeth_check_idx_response(card, iob->data);
 789         switch (rc) {
 790         case 0:
 791                 break;
 792         case -EIO:
 793                 qeth_clear_ipacmd_list(card);
 794                 qeth_schedule_recovery(card);
 795                 /* fall through */
 796         default:
 797                 goto out;
 798         }
 799
 800         cmd = qeth_check_ipa_data(card, iob);
 801         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 802                 goto out;
 803         /*in case of OSN : check if cmd is set */
 804         if (card->info.type == QETH_CARD_TYPE_OSN &&
 805             cmd &&
 806             cmd->hdr.command != IPA_CMD_STARTLAN &&
 807             card->osn_info.assist_cb != NULL) {
 808                 card->osn_info.assist_cb(card->dev, cmd);
 809                 goto out;
 810         }
 811
 812         spin_lock_irqsave(&card->lock, flags);
 813         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 814                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 815                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 816                         qeth_get_reply(reply);
 817                         list_del_init(&reply->list);
 818                         spin_unlock_irqrestore(&card->lock, flags);
 819                         keep_reply = 0;
 820                         if (reply->callback != NULL) {
 821                                 if (cmd) {
 822                                         reply->offset = (__u16)((char *)cmd -
 823                                                         (char *)iob->data);
 824                                         keep_reply = reply->callback(card,
 825                                                         reply,
 826                                                         (unsigned long)cmd);
 827                                 } else
 828                                         keep_reply = reply->callback(card,
 829                                                         reply,
 830                                                         (unsigned long)iob);
 831                         }
 832                         if (cmd)
 833                                 reply->rc = (u16) cmd->hdr.return_code;
 834                         else if (iob->rc)
 835                                 reply->rc = iob->rc;
 836                         if (keep_reply) {
 837                                 spin_lock_irqsave(&card->lock, flags);
 838                                 list_add_tail(&reply->list,
 839                                               &card->cmd_waiter_list);
 840                                 spin_unlock_irqrestore(&card->lock, flags);
 841                         } else {
 842                                 atomic_inc(&reply->received);
 843                                 wake_up(&reply->wait_q);
 844                         }
 845                         qeth_put_reply(reply);
 846                         goto out;
 847                 }
 848         }
 849         spin_unlock_irqrestore(&card->lock, flags);
 850 out:
 851         memcpy(&card->seqno.pdu_hdr_ack,
 852                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 853                 QETH_SEQ_NO_LENGTH);
 854         qeth_release_buffer(channel, iob);
 855 }
 856
 857 static int qeth_setup_channel(struct qeth_channel *channel)
 858 {
 859         int cnt;
 860
 861         QETH_DBF_TEXT(SETUP, 2, "setupch");
 862         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 863                 channel->iob[cnt].data =
 864                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 865                 if (channel->iob[cnt].data == NULL)
 866                         break;
 867                 channel->iob[cnt].state = BUF_STATE_FREE;
 868                 channel->iob[cnt].channel = channel;
 869                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 870                 channel->iob[cnt].rc = 0;
 871         }
 872         if (cnt < QETH_CMD_BUFFER_NO) {
 873                 while (cnt-- > 0)
 874                         kfree(channel->iob[cnt].data);
 875                 return -ENOMEM;
 876         }
 877         channel->buf_no = 0;
 878         channel->io_buf_no = 0;
 879         atomic_set(&channel->irq_pending, 0);
 880         spin_lock_init(&channel->iob_lock);
 881
 882         init_waitqueue_head(&channel->wait_q);
 883         return 0;
 884 }
 885
 886 static int qeth_set_thread_start_bit(struct qeth_card *card,
 887                 unsigned long thread)
 888 {
 889         unsigned long flags;
 890
 891         spin_lock_irqsave(&card->thread_mask_lock, flags);
 892         if (!(card->thread_allowed_mask & thread) ||
 893               (card->thread_start_mask & thread)) {
 894                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 895                 return -EPERM;
 896         }
 897         card->thread_start_mask |= thread;
 898         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 899         return 0;
 900 }
 901
 902 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 903 {
 904         unsigned long flags;
 905
 906         spin_lock_irqsave(&card->thread_mask_lock, flags);
 907         card->thread_start_mask &= ~thread;
 908         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 909         wake_up(&card->wait_q);
 910 }
 911 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 912
 913 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 914 {
 915         unsigned long flags;
 916
 917         spin_lock_irqsave(&card->thread_mask_lock, flags);
 918         card->thread_running_mask &= ~thread;
 919         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 920         wake_up(&card->wait_q);
 921 }
 922 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 923
 924 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 925 {
 926         unsigned long flags;
 927         int rc = 0;
 928
 929         spin_lock_irqsave(&card->thread_mask_lock, flags);
 930         if (card->thread_start_mask & thread) {
 931                 if ((card->thread_allowed_mask & thread) &&
 932                     !(card->thread_running_mask & thread)) {
 933                         rc = 1;
 934                         card->thread_start_mask &= ~thread;
 935                         card->thread_running_mask |= thread;
 936                 } else
 937                         rc = -EPERM;
 938         }
 939         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 940         return rc;
 941 }
 942
 943 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 944 {
 945         int rc = 0;
 946
 947         wait_event(card->wait_q,
 948                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 949         return rc;
 950 }
 951 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 952
 953 void qeth_schedule_recovery(struct qeth_card *card)
 954 {
 955         QETH_CARD_TEXT(card, 2, "startrec");
 956         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 957                 schedule_work(&card->kernel_thread_starter);
 958 }
 959 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 960
 961 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 962 {
 963         int dstat, cstat;
 964         char *sense;
 965         struct qeth_card *card;
 966
 967         sense = (char *) irb->ecw;
 968         cstat = irb->scsw.cmd.cstat;
 969         dstat = irb->scsw.cmd.dstat;
 970         card = CARD_FROM_CDEV(cdev);
 971
 972         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 973                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 974                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 975                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 976                 dev_warn(&cdev->dev, "The qeth device driver "
 977                         "failed to recover an error on the device\n");
 978                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 979                         dev_name(&cdev->dev), dstat, cstat);
 980                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 981                                 16, 1, irb, 64, 1);
 982                 return 1;
 983         }
 984
 985         if (dstat & DEV_STAT_UNIT_CHECK) {
 986                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 987                     SENSE_RESETTING_EVENT_FLAG) {
 988                         QETH_CARD_TEXT(card, 2, "REVIND");
 989                         return 1;
 990                 }
 991                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 992                     SENSE_COMMAND_REJECT_FLAG) {
 993                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 994                         return 1;
 995                 }
 996                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 997                         QETH_CARD_TEXT(card, 2, "AFFE");
 998                         return 1;
 999                 }
1000                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1001                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1002                         return 0;
1003                 }
1004                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1005                         return 1;
1006         }
1007         return 0;
1008 }
1009
1010 static long __qeth_check_irb_error(struct ccw_device *cdev,
1011                 unsigned long intparm, struct irb *irb)
1012 {
1013         struct qeth_card *card;
1014
1015         card = CARD_FROM_CDEV(cdev);
1016
1017         if (!IS_ERR(irb))
1018                 return 0;
1019
1020         switch (PTR_ERR(irb)) {
1021         case -EIO:
1022                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1023                         dev_name(&cdev->dev));
1024                 QETH_CARD_TEXT(card, 2, "ckirberr");
1025                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1026                 break;
1027         case -ETIMEDOUT:
1028                 dev_warn(&cdev->dev, "A hardware operation timed out"
1029                         " on the device\n");
1030                 QETH_CARD_TEXT(card, 2, "ckirberr");
1031                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1032                 if (intparm == QETH_RCD_PARM) {
1033                         if (card && (card->data.ccwdev == cdev)) {
1034                                 card->data.state = CH_STATE_DOWN;
1035                                 wake_up(&card->wait_q);
1036                         }
1037                 }
1038                 break;
1039         default:
1040                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1041                         dev_name(&cdev->dev), PTR_ERR(irb));
1042                 QETH_CARD_TEXT(card, 2, "ckirberr");
1043                 QETH_CARD_TEXT(card, 2, "  rc???");
1044         }
1045         return PTR_ERR(irb);
1046 }
1047
1048 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1049                 struct irb *irb)
1050 {
1051         int rc;
1052         int cstat, dstat;
1053         struct qeth_cmd_buffer *buffer;
1054         struct qeth_channel *channel;
1055         struct qeth_card *card;
1056         struct qeth_cmd_buffer *iob;
1057         __u8 index;
1058
1059         if (__qeth_check_irb_error(cdev, intparm, irb))
1060                 return;
1061         cstat = irb->scsw.cmd.cstat;
1062         dstat = irb->scsw.cmd.dstat;
1063
1064         card = CARD_FROM_CDEV(cdev);
1065         if (!card)
1066                 return;
1067
1068         QETH_CARD_TEXT(card, 5, "irq");
1069
1070         if (card->read.ccwdev == cdev) {
1071                 channel = &card->read;
1072                 QETH_CARD_TEXT(card, 5, "read");
1073         } else if (card->write.ccwdev == cdev) {
1074                 channel = &card->write;
1075                 QETH_CARD_TEXT(card, 5, "write");
1076         } else {
1077                 channel = &card->data;
1078                 QETH_CARD_TEXT(card, 5, "data");
1079         }
1080         atomic_set(&channel->irq_pending, 0);
1081
1082         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1083                 channel->state = CH_STATE_STOPPED;
1084
1085         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1086                 channel->state = CH_STATE_HALTED;
1087
1088         /*let's wake up immediately on data channel*/
1089         if ((channel == &card->data) && (intparm != 0) &&
1090             (intparm != QETH_RCD_PARM))
1091                 goto out;
1092
1093         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1094                 QETH_CARD_TEXT(card, 6, "clrchpar");
1095                 /* we don't have to handle this further */
1096                 intparm = 0;
1097         }
1098         if (intparm == QETH_HALT_CHANNEL_PARM) {
1099                 QETH_CARD_TEXT(card, 6, "hltchpar");
1100                 /* we don't have to handle this further */
1101                 intparm = 0;
1102         }
1103         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1104             (dstat & DEV_STAT_UNIT_CHECK) ||
1105             (cstat)) {
1106                 if (irb->esw.esw0.erw.cons) {
1107                         dev_warn(&channel->ccwdev->dev,
1108                                 "The qeth device driver failed to recover "
1109                                 "an error on the device\n");
1110                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1111                                 "0x%X dstat 0x%X\n",
1112                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1113                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1114                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1115                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1116                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1117                 }
1118                 if (intparm == QETH_RCD_PARM) {
1119                         channel->state = CH_STATE_DOWN;
1120                         goto out;
1121                 }
1122                 rc = qeth_get_problem(cdev, irb);
1123                 if (rc) {
1124                         qeth_clear_ipacmd_list(card);
1125                         qeth_schedule_recovery(card);
1126                         goto out;
1127                 }
1128         }
1129
1130         if (intparm == QETH_RCD_PARM) {
1131                 channel->state = CH_STATE_RCD_DONE;
1132                 goto out;
1133         }
1134         if (intparm) {
1135                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1136                 buffer->state = BUF_STATE_PROCESSED;
1137         }
1138         if (channel == &card->data)
1139                 return;
1140         if (channel == &card->read &&
1141             channel->state == CH_STATE_UP)
1142                 qeth_issue_next_read(card);
1143
1144         iob = channel->iob;
1145         index = channel->buf_no;
1146         while (iob[index].state == BUF_STATE_PROCESSED) {
1147                 if (iob[index].callback != NULL)
1148                         iob[index].callback(channel, iob + index);
1149
1150                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1151         }
1152         channel->buf_no = index;
1153 out:
1154         wake_up(&card->wait_q);
1155         return;
1156 }
1157
1158 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1159                 struct qeth_qdio_out_buffer *buf,
1160                 enum iucv_tx_notify notification)
1161 {
1162         struct sk_buff *skb;
1163
1164         if (skb_queue_empty(&buf->skb_list))
1165                 goto out;
1166         skb = skb_peek(&buf->skb_list);
1167         while (skb) {
1168                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1169                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1170                 if (skb->protocol == ETH_P_AF_IUCV) {
1171                         if (skb->sk) {
1172                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1173                                 iucv->sk_txnotify(skb, notification);
1174                         }
1175                 }
1176                 if (skb_queue_is_last(&buf->skb_list, skb))
1177                         skb = NULL;
1178                 else
1179                         skb = skb_queue_next(&buf->skb_list, skb);
1180         }
1181 out:
1182         return;
1183 }
1184
1185 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1186 {
1187         struct sk_buff *skb;
1188         struct iucv_sock *iucv;
1189         int notify_general_error = 0;
1190
1191         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1192                 notify_general_error = 1;
1193
1194         /* release may never happen from within CQ tasklet scope */
1195         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1196
1197         skb = skb_dequeue(&buf->skb_list);
1198         while (skb) {
1199                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1200                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1201                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1202                         if (skb->sk) {
1203                                 iucv = iucv_sk(skb->sk);
1204                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1205                         }
1206                 }
1207                 atomic_dec(&skb->users);
1208                 dev_kfree_skb_any(skb);
1209                 skb = skb_dequeue(&buf->skb_list);
1210         }
1211 }
1212
1213 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1214                 struct qeth_qdio_out_buffer *buf,
1215                 enum qeth_qdio_buffer_states newbufstate)
1216 {
1217         int i;
1218
1219         /* is PCI flag set on buffer? */
1220         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1221                 atomic_dec(&queue->set_pci_flags_count);
1222
1223         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1224                 qeth_release_skbs(buf);
1225         }
1226         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1227                 if (buf->buffer->element[i].addr && buf->is_header[i])
1228                         kmem_cache_free(qeth_core_header_cache,
1229                                 buf->buffer->element[i].addr);
1230                 buf->is_header[i] = 0;
1231                 buf->buffer->element[i].length = 0;
1232                 buf->buffer->element[i].addr = NULL;
1233                 buf->buffer->element[i].eflags = 0;
1234                 buf->buffer->element[i].sflags = 0;
1235         }
1236         buf->buffer->element[15].eflags = 0;
1237         buf->buffer->element[15].sflags = 0;
1238         buf->next_element_to_fill = 0;
1239         atomic_set(&buf->state, newbufstate);
1240 }
1241
1242 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1243 {
1244         int j;
1245
1246         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1247                 if (!q->bufs[j])
1248                         continue;
1249                 qeth_cleanup_handled_pending(q, j, 1);
1250                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1251                 if (free) {
1252                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1253                         q->bufs[j] = NULL;
1254                 }
1255         }
1256 }
1257
1258 void qeth_clear_qdio_buffers(struct qeth_card *card)
1259 {
1260         int i;
1261
1262         QETH_CARD_TEXT(card, 2, "clearqdbf");
1263         /* clear outbound buffers to free skbs */
1264         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1265                 if (card->qdio.out_qs[i]) {
1266                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1267                 }
1268         }
1269 }
1270 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1271
1272 static void qeth_free_buffer_pool(struct qeth_card *card)
1273 {
1274         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1275         int i = 0;
1276         list_for_each_entry_safe(pool_entry, tmp,
1277                                  &card->qdio.init_pool.entry_list, init_list){
1278                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1279                         free_page((unsigned long)pool_entry->elements[i]);
1280                 list_del(&pool_entry->init_list);
1281                 kfree(pool_entry);
1282         }
1283 }
1284
1285 static void qeth_free_qdio_buffers(struct qeth_card *card)
1286 {
1287         int i, j;
1288
1289         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1290                 QETH_QDIO_UNINITIALIZED)
1291                 return;
1292
1293         qeth_free_cq(card);
1294         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1295         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1296                 if (card->qdio.in_q->bufs[j].rx_skb)
1297                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1298         }
1299         kfree(card->qdio.in_q);
1300         card->qdio.in_q = NULL;
1301         /* inbound buffer pool */
1302         qeth_free_buffer_pool(card);
1303         /* free outbound qdio_qs */
1304         if (card->qdio.out_qs) {
1305                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1306                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1307                         kfree(card->qdio.out_qs[i]);
1308                 }
1309                 kfree(card->qdio.out_qs);
1310                 card->qdio.out_qs = NULL;
1311         }
1312 }
1313
1314 static void qeth_clean_channel(struct qeth_channel *channel)
1315 {
1316         int cnt;
1317
1318         QETH_DBF_TEXT(SETUP, 2, "freech");
1319         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1320                 kfree(channel->iob[cnt].data);
1321 }
1322
1323 static void qeth_set_single_write_queues(struct qeth_card *card)
1324 {
1325         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1326             (card->qdio.no_out_queues == 4))
1327                 qeth_free_qdio_buffers(card);
1328
1329         card->qdio.no_out_queues = 1;
1330         if (card->qdio.default_out_queue != 0)
1331                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1332
1333         card->qdio.default_out_queue = 0;
1334 }
1335
1336 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1337 {
1338         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1339             (card->qdio.no_out_queues == 1)) {
1340                 qeth_free_qdio_buffers(card);
1341                 card->qdio.default_out_queue = 2;
1342         }
1343         card->qdio.no_out_queues = 4;
1344 }
1345
1346 static void qeth_update_from_chp_desc(struct qeth_card *card)
1347 {
1348         struct ccw_device *ccwdev;
1349         struct channelPath_dsc {
1350                 u8 flags;
1351                 u8 lsn;
1352                 u8 desc;
1353                 u8 chpid;
1354                 u8 swla;
1355                 u8 zeroes;
1356                 u8 chla;
1357                 u8 chpp;
1358         } *chp_dsc;
1359
1360         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1361
1362         ccwdev = card->data.ccwdev;
1363         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1364         if (!chp_dsc)
1365                 goto out;
1366
1367         card->info.func_level = 0x4100 + chp_dsc->desc;
1368         if (card->info.type == QETH_CARD_TYPE_IQD)
1369                 goto out;
1370
1371         /* CHPP field bit 6 == 1 -> single queue */
1372         if ((chp_dsc->chpp & 0x02) == 0x02)
1373                 qeth_set_single_write_queues(card);
1374         else
1375                 qeth_set_multiple_write_queues(card);
1376 out:
1377         kfree(chp_dsc);
1378         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1379         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1380 }
1381
1382 static void qeth_init_qdio_info(struct qeth_card *card)
1383 {
1384         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1385         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1386         /* inbound */
1387         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1388         if (card->info.type == QETH_CARD_TYPE_IQD)
1389                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1390         else
1391                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1392         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1393         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1394         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1395 }
1396
1397 static void qeth_set_intial_options(struct qeth_card *card)
1398 {
1399         card->options.route4.type = NO_ROUTER;
1400         card->options.route6.type = NO_ROUTER;
1401         card->options.fake_broadcast = 0;
1402         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1403         card->options.performance_stats = 0;
1404         card->options.rx_sg_cb = QETH_RX_SG_CB;
1405         card->options.isolation = ISOLATION_MODE_NONE;
1406         card->options.cq = QETH_CQ_DISABLED;
1407 }
1408
1409 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1410 {
1411         unsigned long flags;
1412         int rc = 0;
1413
1414         spin_lock_irqsave(&card->thread_mask_lock, flags);
1415         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1416                         (u8) card->thread_start_mask,
1417                         (u8) card->thread_allowed_mask,
1418                         (u8) card->thread_running_mask);
1419         rc = (card->thread_start_mask & thread);
1420         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1421         return rc;
1422 }
1423
1424 static void qeth_start_kernel_thread(struct work_struct *work)
1425 {
1426         struct task_struct *ts;
1427         struct qeth_card *card = container_of(work, struct qeth_card,
1428                                         kernel_thread_starter);
1429         QETH_CARD_TEXT(card , 2, "strthrd");
1430
1431         if (card->read.state != CH_STATE_UP &&
1432             card->write.state != CH_STATE_UP)
1433                 return;
1434         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1435                 ts = kthread_run(card->discipline->recover, (void *)card,
1436                                 "qeth_recover");
1437                 if (IS_ERR(ts)) {
1438                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1439                         qeth_clear_thread_running_bit(card,
1440                                 QETH_RECOVER_THREAD);
1441                 }
1442         }
1443 }
1444
1445 static int qeth_setup_card(struct qeth_card *card)
1446 {
1447
1448         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1449         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1450
1451         card->read.state  = CH_STATE_DOWN;
1452         card->write.state = CH_STATE_DOWN;
1453         card->data.state  = CH_STATE_DOWN;
1454         card->state = CARD_STATE_DOWN;
1455         card->lan_online = 0;
1456         card->read_or_write_problem = 0;
1457         card->dev = NULL;
1458         spin_lock_init(&card->vlanlock);
1459         spin_lock_init(&card->mclock);
1460         spin_lock_init(&card->lock);
1461         spin_lock_init(&card->ip_lock);
1462         spin_lock_init(&card->thread_mask_lock);
1463         mutex_init(&card->conf_mutex);
1464         mutex_init(&card->discipline_mutex);
1465         card->thread_start_mask = 0;
1466         card->thread_allowed_mask = 0;
1467         card->thread_running_mask = 0;
1468         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1469         INIT_LIST_HEAD(&card->ip_list);
1470         INIT_LIST_HEAD(card->ip_tbd_list);
1471         INIT_LIST_HEAD(&card->cmd_waiter_list);
1472         init_waitqueue_head(&card->wait_q);
1473         /* initial options */
1474         qeth_set_intial_options(card);
1475         /* IP address takeover */
1476         INIT_LIST_HEAD(&card->ipato.entries);
1477         card->ipato.enabled = 0;
1478         card->ipato.invert4 = 0;
1479         card->ipato.invert6 = 0;
1480         /* init QDIO stuff */
1481         qeth_init_qdio_info(card);
1482         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1483         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1484         return 0;
1485 }
1486
1487 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1488 {
1489         struct qeth_card *card = container_of(slr, struct qeth_card,
1490                                         qeth_service_level);
1491         if (card->info.mcl_level[0])
1492                 seq_printf(m, "qeth: %s firmware level %s\n",
1493                         CARD_BUS_ID(card), card->info.mcl_level);
1494 }
1495
1496 static struct qeth_card *qeth_alloc_card(void)
1497 {
1498         struct qeth_card *card;
1499
1500         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1501         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1502         if (!card)
1503                 goto out;
1504         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1505         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1506         if (!card->ip_tbd_list) {
1507                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1508                 goto out_card;
1509         }
1510         if (qeth_setup_channel(&card->read))
1511                 goto out_ip;
1512         if (qeth_setup_channel(&card->write))
1513                 goto out_channel;
1514         card->options.layer2 = -1;
1515         card->qeth_service_level.seq_print = qeth_core_sl_print;
1516         register_service_level(&card->qeth_service_level);
1517         return card;
1518
1519 out_channel:
1520         qeth_clean_channel(&card->read);
1521 out_ip:
1522         kfree(card->ip_tbd_list);
1523 out_card:
1524         kfree(card);
1525 out:
1526         return NULL;
1527 }
1528
1529 static int qeth_determine_card_type(struct qeth_card *card)
1530 {
1531         int i = 0;
1532
1533         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1534
1535         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1536         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1537         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1538                 if ((CARD_RDEV(card)->id.dev_type ==
1539                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1540                     (CARD_RDEV(card)->id.dev_model ==
1541                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1542                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1543                         card->qdio.no_out_queues =
1544                                 known_devices[i][QETH_QUEUE_NO_IND];
1545                         card->qdio.no_in_queues = 1;
1546                         card->info.is_multicast_different =
1547                                 known_devices[i][QETH_MULTICAST_IND];
1548                         qeth_update_from_chp_desc(card);
1549                         return 0;
1550                 }
1551                 i++;
1552         }
1553         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1554         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1555                 "unknown type\n");
1556         return -ENOENT;
1557 }
1558
1559 static int qeth_clear_channel(struct qeth_channel *channel)
1560 {
1561         unsigned long flags;
1562         struct qeth_card *card;
1563         int rc;
1564
1565         card = CARD_FROM_CDEV(channel->ccwdev);
1566         QETH_CARD_TEXT(card, 3, "clearch");
1567         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1568         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1569         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1570
1571         if (rc)
1572                 return rc;
1573         rc = wait_event_interruptible_timeout(card->wait_q,
1574                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1575         if (rc == -ERESTARTSYS)
1576                 return rc;
1577         if (channel->state != CH_STATE_STOPPED)
1578                 return -ETIME;
1579         channel->state = CH_STATE_DOWN;
1580         return 0;
1581 }
1582
1583 static int qeth_halt_channel(struct qeth_channel *channel)
1584 {
1585         unsigned long flags;
1586         struct qeth_card *card;
1587         int rc;
1588
1589         card = CARD_FROM_CDEV(channel->ccwdev);
1590         QETH_CARD_TEXT(card, 3, "haltch");
1591         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1592         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1593         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1594
1595         if (rc)
1596                 return rc;
1597         rc = wait_event_interruptible_timeout(card->wait_q,
1598                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1599         if (rc == -ERESTARTSYS)
1600                 return rc;
1601         if (channel->state != CH_STATE_HALTED)
1602                 return -ETIME;
1603         return 0;
1604 }
1605
1606 static int qeth_halt_channels(struct qeth_card *card)
1607 {
1608         int rc1 = 0, rc2 = 0, rc3 = 0;
1609
1610         QETH_CARD_TEXT(card, 3, "haltchs");
1611         rc1 = qeth_halt_channel(&card->read);
1612         rc2 = qeth_halt_channel(&card->write);
1613         rc3 = qeth_halt_channel(&card->data);
1614         if (rc1)
1615                 return rc1;
1616         if (rc2)
1617                 return rc2;
1618         return rc3;
1619 }
1620
1621 static int qeth_clear_channels(struct qeth_card *card)
1622 {
1623         int rc1 = 0, rc2 = 0, rc3 = 0;
1624
1625         QETH_CARD_TEXT(card, 3, "clearchs");
1626         rc1 = qeth_clear_channel(&card->read);
1627         rc2 = qeth_clear_channel(&card->write);
1628         rc3 = qeth_clear_channel(&card->data);
1629         if (rc1)
1630                 return rc1;
1631         if (rc2)
1632                 return rc2;
1633         return rc3;
1634 }
1635
1636 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1637 {
1638         int rc = 0;
1639
1640         QETH_CARD_TEXT(card, 3, "clhacrd");
1641
1642         if (halt)
1643                 rc = qeth_halt_channels(card);
1644         if (rc)
1645                 return rc;
1646         return qeth_clear_channels(card);
1647 }
1648
1649 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1650 {
1651         int rc = 0;
1652
1653         QETH_CARD_TEXT(card, 3, "qdioclr");
1654         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1655                 QETH_QDIO_CLEANING)) {
1656         case QETH_QDIO_ESTABLISHED:
1657                 if (card->info.type == QETH_CARD_TYPE_IQD)
1658                         rc = qdio_shutdown(CARD_DDEV(card),
1659                                 QDIO_FLAG_CLEANUP_USING_HALT);
1660                 else
1661                         rc = qdio_shutdown(CARD_DDEV(card),
1662                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1663                 if (rc)
1664                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1665                 qdio_free(CARD_DDEV(card));
1666                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1667                 break;
1668         case QETH_QDIO_CLEANING:
1669                 return rc;
1670         default:
1671                 break;
1672         }
1673         rc = qeth_clear_halt_card(card, use_halt);
1674         if (rc)
1675                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1676         card->state = CARD_STATE_DOWN;
1677         return rc;
1678 }
1679 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1680
1681 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1682                                int *length)
1683 {
1684         struct ciw *ciw;
1685         char *rcd_buf;
1686         int ret;
1687         struct qeth_channel *channel = &card->data;
1688         unsigned long flags;
1689
1690         /*
1691          * scan for RCD command in extended SenseID data
1692          */
1693         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1694         if (!ciw || ciw->cmd == 0)
1695                 return -EOPNOTSUPP;
1696         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1697         if (!rcd_buf)
1698                 return -ENOMEM;
1699
1700         channel->ccw.cmd_code = ciw->cmd;
1701         channel->ccw.cda = (__u32) __pa(rcd_buf);
1702         channel->ccw.count = ciw->count;
1703         channel->ccw.flags = CCW_FLAG_SLI;
1704         channel->state = CH_STATE_RCD;
1705         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1706         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1707                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1708                                        QETH_RCD_TIMEOUT);
1709         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1710         if (!ret)
1711                 wait_event(card->wait_q,
1712                            (channel->state == CH_STATE_RCD_DONE ||
1713                             channel->state == CH_STATE_DOWN));
1714         if (channel->state == CH_STATE_DOWN)
1715                 ret = -EIO;
1716         else
1717                 channel->state = CH_STATE_DOWN;
1718         if (ret) {
1719                 kfree(rcd_buf);
1720                 *buffer = NULL;
1721                 *length = 0;
1722         } else {
1723                 *length = ciw->count;
1724                 *buffer = rcd_buf;
1725         }
1726         return ret;
1727 }
1728
1729 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1730 {
1731         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1732         card->info.chpid = prcd[30];
1733         card->info.unit_addr2 = prcd[31];
1734         card->info.cula = prcd[63];
1735         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1736                                (prcd[0x11] == _ascebc['M']));
1737 }
1738
1739 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1740 {
1741         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1742
1743         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1744             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1745                 card->info.blkt.time_total = 0;
1746                 card->info.blkt.inter_packet = 0;
1747                 card->info.blkt.inter_packet_jumbo = 0;
1748         } else {
1749                 card->info.blkt.time_total = 250;
1750                 card->info.blkt.inter_packet = 5;
1751                 card->info.blkt.inter_packet_jumbo = 15;
1752         }
1753 }
1754
1755 static void qeth_init_tokens(struct qeth_card *card)
1756 {
1757         card->token.issuer_rm_w = 0x00010103UL;
1758         card->token.cm_filter_w = 0x00010108UL;
1759         card->token.cm_connection_w = 0x0001010aUL;
1760         card->token.ulp_filter_w = 0x0001010bUL;
1761         card->token.ulp_connection_w = 0x0001010dUL;
1762 }
1763
1764 static void qeth_init_func_level(struct qeth_card *card)
1765 {
1766         switch (card->info.type) {
1767         case QETH_CARD_TYPE_IQD:
1768                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1769                 break;
1770         case QETH_CARD_TYPE_OSD:
1771         case QETH_CARD_TYPE_OSN:
1772                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1773                 break;
1774         default:
1775                 break;
1776         }
1777 }
1778
1779 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1780                 void (*idx_reply_cb)(struct qeth_channel *,
1781                         struct qeth_cmd_buffer *))
1782 {
1783         struct qeth_cmd_buffer *iob;
1784         unsigned long flags;
1785         int rc;
1786         struct qeth_card *card;
1787
1788         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1789         card = CARD_FROM_CDEV(channel->ccwdev);
1790         iob = qeth_get_buffer(channel);
1791         iob->callback = idx_reply_cb;
1792         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1793         channel->ccw.count = QETH_BUFSIZE;
1794         channel->ccw.cda = (__u32) __pa(iob->data);
1795
1796         wait_event(card->wait_q,
1797                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1798         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1799         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1800         rc = ccw_device_start(channel->ccwdev,
1801                               &channel->ccw, (addr_t) iob, 0, 0);
1802         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1803
1804         if (rc) {
1805                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1806                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1807                 atomic_set(&channel->irq_pending, 0);
1808                 wake_up(&card->wait_q);
1809                 return rc;
1810         }
1811         rc = wait_event_interruptible_timeout(card->wait_q,
1812                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1813         if (rc == -ERESTARTSYS)
1814                 return rc;
1815         if (channel->state != CH_STATE_UP) {
1816                 rc = -ETIME;
1817                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1818                 qeth_clear_cmd_buffers(channel);
1819         } else
1820                 rc = 0;
1821         return rc;
1822 }
1823
1824 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1825                 void (*idx_reply_cb)(struct qeth_channel *,
1826                         struct qeth_cmd_buffer *))
1827 {
1828         struct qeth_card *card;
1829         struct qeth_cmd_buffer *iob;
1830         unsigned long flags;
1831         __u16 temp;
1832         __u8 tmp;
1833         int rc;
1834         struct ccw_dev_id temp_devid;
1835
1836         card = CARD_FROM_CDEV(channel->ccwdev);
1837
1838         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1839
1840         iob = qeth_get_buffer(channel);
1841         iob->callback = idx_reply_cb;
1842         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1843         channel->ccw.count = IDX_ACTIVATE_SIZE;
1844         channel->ccw.cda = (__u32) __pa(iob->data);
1845         if (channel == &card->write) {
1846                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1847                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1848                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1849                 card->seqno.trans_hdr++;
1850         } else {
1851                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1852                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1853                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1854         }
1855         tmp = ((__u8)card->info.portno) | 0x80;
1856         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1857         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1858                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1859         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1860                &card->info.func_level, sizeof(__u16));
1861         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1862         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1863         temp = (card->info.cula << 8) + card->info.unit_addr2;
1864         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1865
1866         wait_event(card->wait_q,
1867                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1868         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1869         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1870         rc = ccw_device_start(channel->ccwdev,
1871                               &channel->ccw, (addr_t) iob, 0, 0);
1872         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1873
1874         if (rc) {
1875                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1876                         rc);
1877                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1878                 atomic_set(&channel->irq_pending, 0);
1879                 wake_up(&card->wait_q);
1880                 return rc;
1881         }
1882         rc = wait_event_interruptible_timeout(card->wait_q,
1883                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1884         if (rc == -ERESTARTSYS)
1885                 return rc;
1886         if (channel->state != CH_STATE_ACTIVATING) {
1887                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1888                         " failed to recover an error on the device\n");
1889                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1890                         dev_name(&channel->ccwdev->dev));
1891                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1892                 qeth_clear_cmd_buffers(channel);
1893                 return -ETIME;
1894         }
1895         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1896 }
1897
1898 static int qeth_peer_func_level(int level)
1899 {
1900         if ((level & 0xff) == 8)
1901                 return (level & 0xff) + 0x400;
1902         if (((level >> 8) & 3) == 1)
1903                 return (level & 0xff) + 0x200;
1904         return level;
1905 }
1906
1907 static void qeth_idx_write_cb(struct qeth_channel *channel,
1908                 struct qeth_cmd_buffer *iob)
1909 {
1910         struct qeth_card *card;
1911         __u16 temp;
1912
1913         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1914
1915         if (channel->state == CH_STATE_DOWN) {
1916                 channel->state = CH_STATE_ACTIVATING;
1917                 goto out;
1918         }
1919         card = CARD_FROM_CDEV(channel->ccwdev);
1920
1921         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1922                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1923                         dev_err(&card->write.ccwdev->dev,
1924                                 "The adapter is used exclusively by another "
1925                                 "host\n");
1926                 else
1927                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1928                                 " negative reply\n",
1929                                 dev_name(&card->write.ccwdev->dev));
1930                 goto out;
1931         }
1932         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1933         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1934                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1935                         "function level mismatch (sent: 0x%x, received: "
1936                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1937                         card->info.func_level, temp);
1938                 goto out;
1939         }
1940         channel->state = CH_STATE_UP;
1941 out:
1942         qeth_release_buffer(channel, iob);
1943 }
1944
1945 static void qeth_idx_read_cb(struct qeth_channel *channel,
1946                 struct qeth_cmd_buffer *iob)
1947 {
1948         struct qeth_card *card;
1949         __u16 temp;
1950
1951         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1952         if (channel->state == CH_STATE_DOWN) {
1953                 channel->state = CH_STATE_ACTIVATING;
1954                 goto out;
1955         }
1956
1957         card = CARD_FROM_CDEV(channel->ccwdev);
1958         if (qeth_check_idx_response(card, iob->data))
1959                         goto out;
1960
1961         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1962                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1963                 case QETH_IDX_ACT_ERR_EXCL:
1964                         dev_err(&card->write.ccwdev->dev,
1965                                 "The adapter is used exclusively by another "
1966                                 "host\n");
1967                         break;
1968                 case QETH_IDX_ACT_ERR_AUTH:
1969                 case QETH_IDX_ACT_ERR_AUTH_USER:
1970                         dev_err(&card->read.ccwdev->dev,
1971                                 "Setting the device online failed because of "
1972                                 "insufficient authorization\n");
1973                         break;
1974                 default:
1975                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1976                                 " negative reply\n",
1977                                 dev_name(&card->read.ccwdev->dev));
1978                 }
1979                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1980                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1981                 goto out;
1982         }
1983
1984 /**
1985  *  * temporary fix for microcode bug
1986  *   * to revert it,replace OR by AND
1987  *    */
1988         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1989              (card->info.type == QETH_CARD_TYPE_OSD))
1990                 card->info.portname_required = 1;
1991
1992         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1993         if (temp != qeth_peer_func_level(card->info.func_level)) {
1994                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1995                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1996                         dev_name(&card->read.ccwdev->dev),
1997                         card->info.func_level, temp);
1998                 goto out;
1999         }
2000         memcpy(&card->token.issuer_rm_r,
2001                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2002                QETH_MPC_TOKEN_LENGTH);
2003         memcpy(&card->info.mcl_level[0],
2004                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2005         channel->state = CH_STATE_UP;
2006 out:
2007         qeth_release_buffer(channel, iob);
2008 }
2009
2010 void qeth_prepare_control_data(struct qeth_card *card, int len,
2011                 struct qeth_cmd_buffer *iob)
2012 {
2013         qeth_setup_ccw(&card->write, iob->data, len);
2014         iob->callback = qeth_release_buffer;
2015
2016         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2017                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2018         card->seqno.trans_hdr++;
2019         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2020                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2021         card->seqno.pdu_hdr++;
2022         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2023                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2024         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2025 }
2026 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2027
2028 int qeth_send_control_data(struct qeth_card *card, int len,
2029                 struct qeth_cmd_buffer *iob,
2030                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2031                         unsigned long),
2032                 void *reply_param)
2033 {
2034         int rc;
2035         unsigned long flags;
2036         struct qeth_reply *reply = NULL;
2037         unsigned long timeout, event_timeout;
2038         struct qeth_ipa_cmd *cmd;
2039
2040         QETH_CARD_TEXT(card, 2, "sendctl");
2041
2042         if (card->read_or_write_problem) {
2043                 qeth_release_buffer(iob->channel, iob);
2044                 return -EIO;
2045         }
2046         reply = qeth_alloc_reply(card);
2047         if (!reply) {
2048                 return -ENOMEM;
2049         }
2050         reply->callback = reply_cb;
2051         reply->param = reply_param;
2052         if (card->state == CARD_STATE_DOWN)
2053                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2054         else
2055                 reply->seqno = card->seqno.ipa++;
2056         init_waitqueue_head(&reply->wait_q);
2057         spin_lock_irqsave(&card->lock, flags);
2058         list_add_tail(&reply->list, &card->cmd_waiter_list);
2059         spin_unlock_irqrestore(&card->lock, flags);
2060         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2061
2062         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2063         qeth_prepare_control_data(card, len, iob);
2064
2065         if (IS_IPA(iob->data))
2066                 event_timeout = QETH_IPA_TIMEOUT;
2067         else
2068                 event_timeout = QETH_TIMEOUT;
2069         timeout = jiffies + event_timeout;
2070
2071         QETH_CARD_TEXT(card, 6, "noirqpnd");
2072         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2073         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2074                               (addr_t) iob, 0, 0);
2075         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2076         if (rc) {
2077                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2078                         "ccw_device_start rc = %i\n",
2079                         dev_name(&card->write.ccwdev->dev), rc);
2080                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2081                 spin_lock_irqsave(&card->lock, flags);
2082                 list_del_init(&reply->list);
2083                 qeth_put_reply(reply);
2084                 spin_unlock_irqrestore(&card->lock, flags);
2085                 qeth_release_buffer(iob->channel, iob);
2086                 atomic_set(&card->write.irq_pending, 0);
2087                 wake_up(&card->wait_q);
2088                 return rc;
2089         }
2090
2091         /* we have only one long running ipassist, since we can ensure
2092            process context of this command we can sleep */
2093         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2094         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2095             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2096                 if (!wait_event_timeout(reply->wait_q,
2097                     atomic_read(&reply->received), event_timeout))
2098                         goto time_err;
2099         } else {
2100                 while (!atomic_read(&reply->received)) {
2101                         if (time_after(jiffies, timeout))
2102                                 goto time_err;
2103                         cpu_relax();
2104                 }
2105         }
2106
2107         if (reply->rc == -EIO)
2108                 goto error;
2109         rc = reply->rc;
2110         qeth_put_reply(reply);
2111         return rc;
2112
2113 time_err:
2114         reply->rc = -ETIME;
2115         spin_lock_irqsave(&reply->card->lock, flags);
2116         list_del_init(&reply->list);
2117         spin_unlock_irqrestore(&reply->card->lock, flags);
2118         atomic_inc(&reply->received);
2119 error:
2120         atomic_set(&card->write.irq_pending, 0);
2121         qeth_release_buffer(iob->channel, iob);
2122         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2123         rc = reply->rc;
2124         qeth_put_reply(reply);
2125         return rc;
2126 }
2127 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2128
2129 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2130                 unsigned long data)
2131 {
2132         struct qeth_cmd_buffer *iob;
2133
2134         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2135
2136         iob = (struct qeth_cmd_buffer *) data;
2137         memcpy(&card->token.cm_filter_r,
2138                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2139                QETH_MPC_TOKEN_LENGTH);
2140         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2141         return 0;
2142 }
2143
2144 static int qeth_cm_enable(struct qeth_card *card)
2145 {
2146         int rc;
2147         struct qeth_cmd_buffer *iob;
2148
2149         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2150
2151         iob = qeth_wait_for_buffer(&card->write);
2152         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2153         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2154                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2155         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2156                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2157
2158         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2159                                     qeth_cm_enable_cb, NULL);
2160         return rc;
2161 }
2162
2163 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2164                 unsigned long data)
2165 {
2166
2167         struct qeth_cmd_buffer *iob;
2168
2169         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2170
2171         iob = (struct qeth_cmd_buffer *) data;
2172         memcpy(&card->token.cm_connection_r,
2173                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2174                QETH_MPC_TOKEN_LENGTH);
2175         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2176         return 0;
2177 }
2178
2179 static int qeth_cm_setup(struct qeth_card *card)
2180 {
2181         int rc;
2182         struct qeth_cmd_buffer *iob;
2183
2184         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2185
2186         iob = qeth_wait_for_buffer(&card->write);
2187         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2188         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2189                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2190         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2191                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2192         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2193                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2194         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2195                                     qeth_cm_setup_cb, NULL);
2196         return rc;
2197
2198 }
2199
2200 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2201 {
2202         switch (card->info.type) {
2203         case QETH_CARD_TYPE_UNKNOWN:
2204                 return 1500;
2205         case QETH_CARD_TYPE_IQD:
2206                 return card->info.max_mtu;
2207         case QETH_CARD_TYPE_OSD:
2208                 switch (card->info.link_type) {
2209                 case QETH_LINK_TYPE_HSTR:
2210                 case QETH_LINK_TYPE_LANE_TR:
2211                         return 2000;
2212                 default:
2213                         return card->options.layer2 ? 1500 : 1492;
2214                 }
2215         case QETH_CARD_TYPE_OSM:
2216         case QETH_CARD_TYPE_OSX:
2217                 return card->options.layer2 ? 1500 : 1492;
2218         default:
2219                 return 1500;
2220         }
2221 }
2222
2223 static inline int qeth_get_mtu_outof_framesize(int framesize)
2224 {
2225         switch (framesize) {
2226         case 0x4000:
2227                 return 8192;
2228         case 0x6000:
2229                 return 16384;
2230         case 0xa000:
2231                 return 32768;
2232         case 0xffff:
2233                 return 57344;
2234         default:
2235                 return 0;
2236         }
2237 }
2238
2239 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2240 {
2241         switch (card->info.type) {
2242         case QETH_CARD_TYPE_OSD:
2243         case QETH_CARD_TYPE_OSM:
2244         case QETH_CARD_TYPE_OSX:
2245         case QETH_CARD_TYPE_IQD:
2246                 return ((mtu >= 576) &&
2247                         (mtu <= card->info.max_mtu));
2248         case QETH_CARD_TYPE_OSN:
2249         case QETH_CARD_TYPE_UNKNOWN:
2250         default:
2251                 return 1;
2252         }
2253 }
2254
2255 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2256                 unsigned long data)
2257 {
2258
2259         __u16 mtu, framesize;
2260         __u16 len;
2261         __u8 link_type;
2262         struct qeth_cmd_buffer *iob;
2263
2264         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2265
2266         iob = (struct qeth_cmd_buffer *) data;
2267         memcpy(&card->token.ulp_filter_r,
2268                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2269                QETH_MPC_TOKEN_LENGTH);
2270         if (card->info.type == QETH_CARD_TYPE_IQD) {
2271                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2272                 mtu = qeth_get_mtu_outof_framesize(framesize);
2273                 if (!mtu) {
2274                         iob->rc = -EINVAL;
2275                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2276                         return 0;
2277                 }
2278                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2279                         /* frame size has changed */
2280                         if (card->dev &&
2281                             ((card->dev->mtu == card->info.initial_mtu) ||
2282                              (card->dev->mtu > mtu)))
2283                                 card->dev->mtu = mtu;
2284                         qeth_free_qdio_buffers(card);
2285                 }
2286                 card->info.initial_mtu = mtu;
2287                 card->info.max_mtu = mtu;
2288                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2289         } else {
2290                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2291                         iob->data);
2292                 card->info.initial_mtu = min(card->info.max_mtu,
2293                                         qeth_get_initial_mtu_for_card(card));
2294                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2295         }
2296
2297         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2298         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2299                 memcpy(&link_type,
2300                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2301                 card->info.link_type = link_type;
2302         } else
2303                 card->info.link_type = 0;
2304         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2305         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2306         return 0;
2307 }
2308
2309 static int qeth_ulp_enable(struct qeth_card *card)
2310 {
2311         int rc;
2312         char prot_type;
2313         struct qeth_cmd_buffer *iob;
2314
2315         /*FIXME: trace view callbacks*/
2316         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2317
2318         iob = qeth_wait_for_buffer(&card->write);
2319         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2320
2321         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2322                 (__u8) card->info.portno;
2323         if (card->options.layer2)
2324                 if (card->info.type == QETH_CARD_TYPE_OSN)
2325                         prot_type = QETH_PROT_OSN2;
2326                 else
2327                         prot_type = QETH_PROT_LAYER2;
2328         else
2329                 prot_type = QETH_PROT_TCPIP;
2330
2331         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2332         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2333                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2334         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2335                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2336         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2337                card->info.portname, 9);
2338         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2339                                     qeth_ulp_enable_cb, NULL);
2340         return rc;
2341
2342 }
2343
2344 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2345                 unsigned long data)
2346 {
2347         struct qeth_cmd_buffer *iob;
2348
2349         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2350
2351         iob = (struct qeth_cmd_buffer *) data;
2352         memcpy(&card->token.ulp_connection_r,
2353                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2354                QETH_MPC_TOKEN_LENGTH);
2355         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2356                      3)) {
2357                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2358                 dev_err(&card->gdev->dev, "A connection could not be "
2359                         "established because of an OLM limit\n");
2360                 iob->rc = -EMLINK;
2361         }
2362         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2363         return 0;
2364 }
2365
2366 static int qeth_ulp_setup(struct qeth_card *card)
2367 {
2368         int rc;
2369         __u16 temp;
2370         struct qeth_cmd_buffer *iob;
2371         struct ccw_dev_id dev_id;
2372
2373         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2374
2375         iob = qeth_wait_for_buffer(&card->write);
2376         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2377
2378         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2379                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2380         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2381                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2382         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2383                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2384
2385         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2386         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2387         temp = (card->info.cula << 8) + card->info.unit_addr2;
2388         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2389         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2390                                     qeth_ulp_setup_cb, NULL);
2391         return rc;
2392 }
2393
2394 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2395 {
2396         int rc;
2397         struct qeth_qdio_out_buffer *newbuf;
2398
2399         rc = 0;
2400         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2401         if (!newbuf) {
2402                 rc = -ENOMEM;
2403                 goto out;
2404         }
2405         newbuf->buffer = &q->qdio_bufs[bidx];
2406         skb_queue_head_init(&newbuf->skb_list);
2407         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2408         newbuf->q = q;
2409         newbuf->aob = NULL;
2410         newbuf->next_pending = q->bufs[bidx];
2411         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2412         q->bufs[bidx] = newbuf;
2413         if (q->bufstates) {
2414                 q->bufstates[bidx].user = newbuf;
2415                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2416                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2417                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2418                                 (long) newbuf->next_pending);
2419         }
2420 out:
2421         return rc;
2422 }
2423
2424
2425 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2426 {
2427         int i, j;
2428
2429         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2430
2431         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2432                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2433                 return 0;
2434
2435         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2436                                    GFP_KERNEL);
2437         if (!card->qdio.in_q)
2438                 goto out_nomem;
2439         QETH_DBF_TEXT(SETUP, 2, "inq");
2440         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2441         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2442         /* give inbound qeth_qdio_buffers their qdio_buffers */
2443         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2444                 card->qdio.in_q->bufs[i].buffer =
2445                         &card->qdio.in_q->qdio_bufs[i];
2446                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2447         }
2448         /* inbound buffer pool */
2449         if (qeth_alloc_buffer_pool(card))
2450                 goto out_freeinq;
2451
2452         /* outbound */
2453         card->qdio.out_qs =
2454                 kzalloc(card->qdio.no_out_queues *
2455                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2456         if (!card->qdio.out_qs)
2457                 goto out_freepool;
2458         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2459                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2460                                                GFP_KERNEL);
2461                 if (!card->qdio.out_qs[i])
2462                         goto out_freeoutq;
2463                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2464                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2465                 card->qdio.out_qs[i]->queue_no = i;
2466                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2467                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2468                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2469                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2470                                 goto out_freeoutqbufs;
2471                 }
2472         }
2473
2474         /* completion */
2475         if (qeth_alloc_cq(card))
2476                 goto out_freeoutq;
2477
2478         return 0;
2479
2480 out_freeoutqbufs:
2481         while (j > 0) {
2482                 --j;
2483                 kmem_cache_free(qeth_qdio_outbuf_cache,
2484                                 card->qdio.out_qs[i]->bufs[j]);
2485                 card->qdio.out_qs[i]->bufs[j] = NULL;
2486         }
2487 out_freeoutq:
2488         while (i > 0) {
2489                 kfree(card->qdio.out_qs[--i]);
2490                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2491         }
2492         kfree(card->qdio.out_qs);
2493         card->qdio.out_qs = NULL;
2494 out_freepool:
2495         qeth_free_buffer_pool(card);
2496 out_freeinq:
2497         kfree(card->qdio.in_q);
2498         card->qdio.in_q = NULL;
2499 out_nomem:
2500         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2501         return -ENOMEM;
2502 }
2503
2504 static void qeth_create_qib_param_field(struct qeth_card *card,
2505                 char *param_field)
2506 {
2507
2508         param_field[0] = _ascebc['P'];
2509         param_field[1] = _ascebc['C'];
2510         param_field[2] = _ascebc['I'];
2511         param_field[3] = _ascebc['T'];
2512         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2513         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2514         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2515 }
2516
2517 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2518                 char *param_field)
2519 {
2520         param_field[16] = _ascebc['B'];
2521         param_field[17] = _ascebc['L'];
2522         param_field[18] = _ascebc['K'];
2523         param_field[19] = _ascebc['T'];
2524         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2525         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2526         *((unsigned int *) (&param_field[28])) =
2527                 card->info.blkt.inter_packet_jumbo;
2528 }
2529
2530 static int qeth_qdio_activate(struct qeth_card *card)
2531 {
2532         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2533         return qdio_activate(CARD_DDEV(card));
2534 }
2535
2536 static int qeth_dm_act(struct qeth_card *card)
2537 {
2538         int rc;
2539         struct qeth_cmd_buffer *iob;
2540
2541         QETH_DBF_TEXT(SETUP, 2, "dmact");
2542
2543         iob = qeth_wait_for_buffer(&card->write);
2544         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2545
2546         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2547                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2548         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2549                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2550         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2551         return rc;
2552 }
2553
2554 static int qeth_mpc_initialize(struct qeth_card *card)
2555 {
2556         int rc;
2557
2558         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2559
2560         rc = qeth_issue_next_read(card);
2561         if (rc) {
2562                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2563                 return rc;
2564         }
2565         rc = qeth_cm_enable(card);
2566         if (rc) {
2567                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2568                 goto out_qdio;
2569         }
2570         rc = qeth_cm_setup(card);
2571         if (rc) {
2572                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2573                 goto out_qdio;
2574         }
2575         rc = qeth_ulp_enable(card);
2576         if (rc) {
2577                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2578                 goto out_qdio;
2579         }
2580         rc = qeth_ulp_setup(card);
2581         if (rc) {
2582                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2583                 goto out_qdio;
2584         }
2585         rc = qeth_alloc_qdio_buffers(card);
2586         if (rc) {
2587                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2588                 goto out_qdio;
2589         }
2590         rc = qeth_qdio_establish(card);
2591         if (rc) {
2592                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2593                 qeth_free_qdio_buffers(card);
2594                 goto out_qdio;
2595         }
2596         rc = qeth_qdio_activate(card);
2597         if (rc) {
2598                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2599                 goto out_qdio;
2600         }
2601         rc = qeth_dm_act(card);
2602         if (rc) {
2603                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2604                 goto out_qdio;
2605         }
2606
2607         return 0;
2608 out_qdio:
2609         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2610         return rc;
2611 }
2612
2613 static void qeth_print_status_with_portname(struct qeth_card *card)
2614 {
2615         char dbf_text[15];
2616         int i;
2617
2618         sprintf(dbf_text, "%s", card->info.portname + 1);
2619         for (i = 0; i < 8; i++)
2620                 dbf_text[i] =
2621                         (char) _ebcasc[(__u8) dbf_text[i]];
2622         dbf_text[8] = 0;
2623         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2624                "with link type %s (portname: %s)\n",
2625                qeth_get_cardname(card),
2626                (card->info.mcl_level[0]) ? " (level: " : "",
2627                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2628                (card->info.mcl_level[0]) ? ")" : "",
2629                qeth_get_cardname_short(card),
2630                dbf_text);
2631
2632 }
2633
2634 static void qeth_print_status_no_portname(struct qeth_card *card)
2635 {
2636         if (card->info.portname[0])
2637                 dev_info(&card->gdev->dev, "Device is a%s "
2638                        "card%s%s%s\nwith link type %s "
2639                        "(no portname needed by interface).\n",
2640                        qeth_get_cardname(card),
2641                        (card->info.mcl_level[0]) ? " (level: " : "",
2642                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2643                        (card->info.mcl_level[0]) ? ")" : "",
2644                        qeth_get_cardname_short(card));
2645         else
2646                 dev_info(&card->gdev->dev, "Device is a%s "
2647                        "card%s%s%s\nwith link type %s.\n",
2648                        qeth_get_cardname(card),
2649                        (card->info.mcl_level[0]) ? " (level: " : "",
2650                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2651                        (card->info.mcl_level[0]) ? ")" : "",
2652                        qeth_get_cardname_short(card));
2653 }
2654
2655 void qeth_print_status_message(struct qeth_card *card)
2656 {
2657         switch (card->info.type) {
2658         case QETH_CARD_TYPE_OSD:
2659         case QETH_CARD_TYPE_OSM:
2660         case QETH_CARD_TYPE_OSX:
2661                 /* VM will use a non-zero first character
2662                  * to indicate a HiperSockets like reporting
2663                  * of the level OSA sets the first character to zero
2664                  * */
2665                 if (!card->info.mcl_level[0]) {
2666                         sprintf(card->info.mcl_level, "%02x%02x",
2667                                 card->info.mcl_level[2],
2668                                 card->info.mcl_level[3]);
2669
2670                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2671                         break;
2672                 }
2673                 /* fallthrough */
2674         case QETH_CARD_TYPE_IQD:
2675                 if ((card->info.guestlan) ||
2676                     (card->info.mcl_level[0] & 0x80)) {
2677                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2678                                 card->info.mcl_level[0]];
2679                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2680                                 card->info.mcl_level[1]];
2681                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2682                                 card->info.mcl_level[2]];
2683                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2684                                 card->info.mcl_level[3]];
2685                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2686                 }
2687                 break;
2688         default:
2689                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2690         }
2691         if (card->info.portname_required)
2692                 qeth_print_status_with_portname(card);
2693         else
2694                 qeth_print_status_no_portname(card);
2695 }
2696 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2697
2698 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2699 {
2700         struct qeth_buffer_pool_entry *entry;
2701
2702         QETH_CARD_TEXT(card, 5, "inwrklst");
2703
2704         list_for_each_entry(entry,
2705                             &card->qdio.init_pool.entry_list, init_list) {
2706                 qeth_put_buffer_pool_entry(card, entry);
2707         }
2708 }
2709
2710 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2711                 struct qeth_card *card)
2712 {
2713         struct list_head *plh;
2714         struct qeth_buffer_pool_entry *entry;
2715         int i, free;
2716         struct page *page;
2717
2718         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2719                 return NULL;
2720
2721         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2722                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2723                 free = 1;
2724                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2725                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2726                                 free = 0;
2727                                 break;
2728                         }
2729                 }
2730                 if (free) {
2731                         list_del_init(&entry->list);
2732                         return entry;
2733                 }
2734         }
2735
2736         /* no free buffer in pool so take first one and swap pages */
2737         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2738                         struct qeth_buffer_pool_entry, list);
2739         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2740                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2741                         page = alloc_page(GFP_ATOMIC);
2742                         if (!page) {
2743                                 return NULL;
2744                         } else {
2745                                 free_page((unsigned long)entry->elements[i]);
2746                                 entry->elements[i] = page_address(page);
2747                                 if (card->options.performance_stats)
2748                                         card->perf_stats.sg_alloc_page_rx++;
2749                         }
2750                 }
2751         }
2752         list_del_init(&entry->list);
2753         return entry;
2754 }
2755
2756 static int qeth_init_input_buffer(struct qeth_card *card,
2757                 struct qeth_qdio_buffer *buf)
2758 {
2759         struct qeth_buffer_pool_entry *pool_entry;
2760         int i;
2761
2762         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2763                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2764                 if (!buf->rx_skb)
2765                         return 1;
2766         }
2767
2768         pool_entry = qeth_find_free_buffer_pool_entry(card);
2769         if (!pool_entry)
2770                 return 1;
2771
2772         /*
2773          * since the buffer is accessed only from the input_tasklet
2774          * there shouldn't be a need to synchronize; also, since we use
2775          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2776          * buffers
2777          */
2778
2779         buf->pool_entry = pool_entry;
2780         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2781                 buf->buffer->element[i].length = PAGE_SIZE;
2782                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2783                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2784                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2785                 else
2786                         buf->buffer->element[i].eflags = 0;
2787                 buf->buffer->element[i].sflags = 0;
2788         }
2789         return 0;
2790 }
2791
2792 int qeth_init_qdio_queues(struct qeth_card *card)
2793 {
2794         int i, j;
2795         int rc;
2796
2797         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2798
2799         /* inbound queue */
2800         memset(card->qdio.in_q->qdio_bufs, 0,
2801                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2802         qeth_initialize_working_pool_list(card);
2803         /*give only as many buffers to hardware as we have buffer pool entries*/
2804         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2805                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2806         card->qdio.in_q->next_buf_to_init =
2807                 card->qdio.in_buf_pool.buf_count - 1;
2808         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2809                      card->qdio.in_buf_pool.buf_count - 1);
2810         if (rc) {
2811                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2812                 return rc;
2813         }
2814
2815         /* completion */
2816         rc = qeth_cq_init(card);
2817         if (rc) {
2818                 return rc;
2819         }
2820
2821         /* outbound queue */
2822         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2823                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2824                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2825                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2826                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2827                                         card->qdio.out_qs[i]->bufs[j],
2828                                         QETH_QDIO_BUF_EMPTY);
2829                 }
2830                 card->qdio.out_qs[i]->card = card;
2831                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2832                 card->qdio.out_qs[i]->do_pack = 0;
2833                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2834                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2835                 atomic_set(&card->qdio.out_qs[i]->state,
2836                            QETH_OUT_Q_UNLOCKED);
2837         }
2838         return 0;
2839 }
2840 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2841
2842 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2843 {
2844         switch (link_type) {
2845         case QETH_LINK_TYPE_HSTR:
2846                 return 2;
2847         default:
2848                 return 1;
2849         }
2850 }
2851
2852 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2853                 struct qeth_ipa_cmd *cmd, __u8 command,
2854                 enum qeth_prot_versions prot)
2855 {
2856         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2857         cmd->hdr.command = command;
2858         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2859         cmd->hdr.seqno = card->seqno.ipa;
2860         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2861         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2862         if (card->options.layer2)
2863                 cmd->hdr.prim_version_no = 2;
2864         else
2865                 cmd->hdr.prim_version_no = 1;
2866         cmd->hdr.param_count = 1;
2867         cmd->hdr.prot_version = prot;
2868         cmd->hdr.ipa_supported = 0;
2869         cmd->hdr.ipa_enabled = 0;
2870 }
2871
2872 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2873                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2874 {
2875         struct qeth_cmd_buffer *iob;
2876         struct qeth_ipa_cmd *cmd;
2877
2878         iob = qeth_wait_for_buffer(&card->write);
2879         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2880         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2881
2882         return iob;
2883 }
2884 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2885
2886 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2887                 char prot_type)
2888 {
2889         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2890         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2891         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2892                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2893 }
2894 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2895
2896 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2897                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2898                         unsigned long),
2899                 void *reply_param)
2900 {
2901         int rc;
2902         char prot_type;
2903
2904         QETH_CARD_TEXT(card, 4, "sendipa");
2905
2906         if (card->options.layer2)
2907                 if (card->info.type == QETH_CARD_TYPE_OSN)
2908                         prot_type = QETH_PROT_OSN2;
2909                 else
2910                         prot_type = QETH_PROT_LAYER2;
2911         else
2912                 prot_type = QETH_PROT_TCPIP;
2913         qeth_prepare_ipa_cmd(card, iob, prot_type);
2914         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2915                                                 iob, reply_cb, reply_param);
2916         if (rc == -ETIME) {
2917                 qeth_clear_ipacmd_list(card);
2918                 qeth_schedule_recovery(card);
2919         }
2920         return rc;
2921 }
2922 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2923
2924 int qeth_send_startlan(struct qeth_card *card)
2925 {
2926         int rc;
2927         struct qeth_cmd_buffer *iob;
2928
2929         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2930
2931         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2932         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2933         return rc;
2934 }
2935 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2936
2937 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2938                 struct qeth_reply *reply, unsigned long data)
2939 {
2940         struct qeth_ipa_cmd *cmd;
2941
2942         QETH_CARD_TEXT(card, 4, "defadpcb");
2943
2944         cmd = (struct qeth_ipa_cmd *) data;
2945         if (cmd->hdr.return_code == 0)
2946                 cmd->hdr.return_code =
2947                         cmd->data.setadapterparms.hdr.return_code;
2948         return 0;
2949 }
2950
2951 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2952                 struct qeth_reply *reply, unsigned long data)
2953 {
2954         struct qeth_ipa_cmd *cmd;
2955
2956         QETH_CARD_TEXT(card, 3, "quyadpcb");
2957
2958         cmd = (struct qeth_ipa_cmd *) data;
2959         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2960                 card->info.link_type =
2961                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2962                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2963         }
2964         card->options.adp.supported_funcs =
2965                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2966         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2967 }
2968
2969 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2970                 __u32 command, __u32 cmdlen)
2971 {
2972         struct qeth_cmd_buffer *iob;
2973         struct qeth_ipa_cmd *cmd;
2974
2975         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2976                                      QETH_PROT_IPV4);
2977         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2978         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2979         cmd->data.setadapterparms.hdr.command_code = command;
2980         cmd->data.setadapterparms.hdr.used_total = 1;
2981         cmd->data.setadapterparms.hdr.seq_no = 1;
2982
2983         return iob;
2984 }
2985
2986 int qeth_query_setadapterparms(struct qeth_card *card)
2987 {
2988         int rc;
2989         struct qeth_cmd_buffer *iob;
2990
2991         QETH_CARD_TEXT(card, 3, "queryadp");
2992         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2993                                    sizeof(struct qeth_ipacmd_setadpparms));
2994         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2995         return rc;
2996 }
2997 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2998
2999 static int qeth_query_ipassists_cb(struct qeth_card *card,
3000                 struct qeth_reply *reply, unsigned long data)
3001 {
3002         struct qeth_ipa_cmd *cmd;
3003
3004         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3005
3006         cmd = (struct qeth_ipa_cmd *) data;
3007
3008         switch (cmd->hdr.return_code) {
3009         case IPA_RC_NOTSUPP:
3010         case IPA_RC_L2_UNSUPPORTED_CMD:
3011                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3012                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3013                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3014                 return -0;
3015         default:
3016                 if (cmd->hdr.return_code) {
3017                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3018                                                 "rc=%d\n",
3019                                                 dev_name(&card->gdev->dev),
3020                                                 cmd->hdr.return_code);
3021                         return 0;
3022                 }
3023         }
3024
3025         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3026                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3027                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3028         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3029                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3030                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3031         } else
3032                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3033                                         "\n", dev_name(&card->gdev->dev));
3034         return 0;
3035 }
3036
3037 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3038 {
3039         int rc;
3040         struct qeth_cmd_buffer *iob;
3041
3042         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3043         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3044         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3045         return rc;
3046 }
3047 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3048
3049 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3050                 struct qeth_reply *reply, unsigned long data)
3051 {
3052         struct qeth_ipa_cmd *cmd;
3053         __u16 rc;
3054
3055         cmd = (struct qeth_ipa_cmd *)data;
3056         rc = cmd->hdr.return_code;
3057         if (rc)
3058                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3059         else
3060                 card->info.diagass_support = cmd->data.diagass.ext;
3061         return 0;
3062 }
3063
3064 static int qeth_query_setdiagass(struct qeth_card *card)
3065 {
3066         struct qeth_cmd_buffer *iob;
3067         struct qeth_ipa_cmd    *cmd;
3068
3069         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3070         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3071         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3072         cmd->data.diagass.subcmd_len = 16;
3073         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3074         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3075 }
3076
3077 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3078 {
3079         unsigned long info = get_zeroed_page(GFP_KERNEL);
3080         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3081         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3082         struct ccw_dev_id ccwid;
3083         int level;
3084
3085         tid->chpid = card->info.chpid;
3086         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3087         tid->ssid = ccwid.ssid;
3088         tid->devno = ccwid.devno;
3089         if (!info)
3090                 return;
3091         level = stsi(NULL, 0, 0, 0);
3092         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3093                 tid->lparnr = info222->lpar_number;
3094         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3095                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3096                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3097         }
3098         free_page(info);
3099         return;
3100 }
3101
3102 static int qeth_hw_trap_cb(struct qeth_card *card,
3103                 struct qeth_reply *reply, unsigned long data)
3104 {
3105         struct qeth_ipa_cmd *cmd;
3106         __u16 rc;
3107
3108         cmd = (struct qeth_ipa_cmd *)data;
3109         rc = cmd->hdr.return_code;
3110         if (rc)
3111                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3112         return 0;
3113 }
3114
3115 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3116 {
3117         struct qeth_cmd_buffer *iob;
3118         struct qeth_ipa_cmd *cmd;
3119
3120         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3121         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3122         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3123         cmd->data.diagass.subcmd_len = 80;
3124         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3125         cmd->data.diagass.type = 1;
3126         cmd->data.diagass.action = action;
3127         switch (action) {
3128         case QETH_DIAGS_TRAP_ARM:
3129                 cmd->data.diagass.options = 0x0003;
3130                 cmd->data.diagass.ext = 0x00010000 +
3131                         sizeof(struct qeth_trap_id);
3132                 qeth_get_trap_id(card,
3133                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3134                 break;
3135         case QETH_DIAGS_TRAP_DISARM:
3136                 cmd->data.diagass.options = 0x0001;
3137                 break;
3138         case QETH_DIAGS_TRAP_CAPTURE:
3139                 break;
3140         }
3141         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3142 }
3143 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3144
3145 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3146                 unsigned int qdio_error, const char *dbftext)
3147 {
3148         if (qdio_error) {
3149                 QETH_CARD_TEXT(card, 2, dbftext);
3150                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3151                                buf->element[15].sflags);
3152                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3153                                buf->element[14].sflags);
3154                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3155                 if ((buf->element[15].sflags) == 0x12) {
3156                         card->stats.rx_dropped++;
3157                         return 0;
3158                 } else
3159                         return 1;
3160         }
3161         return 0;
3162 }
3163 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3164
3165 void qeth_buffer_reclaim_work(struct work_struct *work)
3166 {
3167         struct qeth_card *card = container_of(work, struct qeth_card,
3168                 buffer_reclaim_work.work);
3169
3170         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3171         qeth_queue_input_buffer(card, card->reclaim_index);
3172 }
3173
3174 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3175 {
3176         struct qeth_qdio_q *queue = card->qdio.in_q;
3177         struct list_head *lh;
3178         int count;
3179         int i;
3180         int rc;
3181         int newcount = 0;
3182
3183         count = (index < queue->next_buf_to_init)?
3184                 card->qdio.in_buf_pool.buf_count -
3185                 (queue->next_buf_to_init - index) :
3186                 card->qdio.in_buf_pool.buf_count -
3187                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3188         /* only requeue at a certain threshold to avoid SIGAs */
3189         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3190                 for (i = queue->next_buf_to_init;
3191                      i < queue->next_buf_to_init + count; ++i) {
3192                         if (qeth_init_input_buffer(card,
3193                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3194                                 break;
3195                         } else {
3196                                 newcount++;
3197                         }
3198                 }
3199
3200                 if (newcount < count) {
3201                         /* we are in memory shortage so we switch back to
3202                            traditional skb allocation and drop packages */
3203                         atomic_set(&card->force_alloc_skb, 3);
3204                         count = newcount;
3205                 } else {
3206                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3207                 }
3208
3209                 if (!count) {
3210                         i = 0;
3211                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3212                                 i++;
3213                         if (i == card->qdio.in_buf_pool.buf_count) {
3214                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3215                                 card->reclaim_index = index;
3216                                 schedule_delayed_work(
3217                                         &card->buffer_reclaim_work,
3218                                         QETH_RECLAIM_WORK_TIME);
3219                         }
3220                         return;
3221                 }
3222
3223                 /*
3224                  * according to old code it should be avoided to requeue all
3225                  * 128 buffers in order to benefit from PCI avoidance.
3226                  * this function keeps at least one buffer (the buffer at
3227                  * 'index') un-requeued -> this buffer is the first buffer that
3228                  * will be requeued the next time
3229                  */
3230                 if (card->options.performance_stats) {
3231                         card->perf_stats.inbound_do_qdio_cnt++;
3232                         card->perf_stats.inbound_do_qdio_start_time =
3233                                 qeth_get_micros();
3234                 }
3235                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3236                              queue->next_buf_to_init, count);
3237                 if (card->options.performance_stats)
3238                         card->perf_stats.inbound_do_qdio_time +=
3239                                 qeth_get_micros() -
3240                                 card->perf_stats.inbound_do_qdio_start_time;
3241                 if (rc) {
3242                         QETH_CARD_TEXT(card, 2, "qinberr");
3243                 }
3244                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3245                                           QDIO_MAX_BUFFERS_PER_Q;
3246         }
3247 }
3248 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3249
3250 static int qeth_handle_send_error(struct qeth_card *card,
3251                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3252 {
3253         int sbalf15 = buffer->buffer->element[15].sflags;
3254
3255         QETH_CARD_TEXT(card, 6, "hdsnderr");
3256         if (card->info.type == QETH_CARD_TYPE_IQD) {
3257                 if (sbalf15 == 0) {
3258                         qdio_err = 0;
3259                 } else {
3260                         qdio_err = 1;
3261                 }
3262         }
3263         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3264
3265         if (!qdio_err)
3266                 return QETH_SEND_ERROR_NONE;
3267
3268         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3269                 return QETH_SEND_ERROR_RETRY;
3270
3271         QETH_CARD_TEXT(card, 1, "lnkfail");
3272         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3273                        (u16)qdio_err, (u8)sbalf15);
3274         return QETH_SEND_ERROR_LINK_FAILURE;
3275 }
3276
3277 /*
3278  * Switched to packing state if the number of used buffers on a queue
3279  * reaches a certain limit.
3280  */
3281 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3282 {
3283         if (!queue->do_pack) {
3284                 if (atomic_read(&queue->used_buffers)
3285                     >= QETH_HIGH_WATERMARK_PACK){
3286                         /* switch non-PACKING -> PACKING */
3287                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3288                         if (queue->card->options.performance_stats)
3289                                 queue->card->perf_stats.sc_dp_p++;
3290                         queue->do_pack = 1;
3291                 }
3292         }
3293 }
3294
3295 /*
3296  * Switches from packing to non-packing mode. If there is a packing
3297  * buffer on the queue this buffer will be prepared to be flushed.
3298  * In that case 1 is returned to inform the caller. If no buffer
3299  * has to be flushed, zero is returned.
3300  */
3301 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3302 {
3303         struct qeth_qdio_out_buffer *buffer;
3304         int flush_count = 0;
3305
3306         if (queue->do_pack) {
3307                 if (atomic_read(&queue->used_buffers)
3308                     <= QETH_LOW_WATERMARK_PACK) {
3309                         /* switch PACKING -> non-PACKING */
3310                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3311                         if (queue->card->options.performance_stats)
3312                                 queue->card->perf_stats.sc_p_dp++;
3313                         queue->do_pack = 0;
3314                         /* flush packing buffers */
3315                         buffer = queue->bufs[queue->next_buf_to_fill];
3316                         if ((atomic_read(&buffer->state) ==
3317                                                 QETH_QDIO_BUF_EMPTY) &&
3318                             (buffer->next_element_to_fill > 0)) {
3319                                 atomic_set(&buffer->state,
3320                                            QETH_QDIO_BUF_PRIMED);
3321                                 flush_count++;
3322                                 queue->next_buf_to_fill =
3323                                         (queue->next_buf_to_fill + 1) %
3324                                         QDIO_MAX_BUFFERS_PER_Q;
3325                         }
3326                 }
3327         }
3328         return flush_count;
3329 }
3330
3331
3332 /*
3333  * Called to flush a packing buffer if no more pci flags are on the queue.
3334  * Checks if there is a packing buffer and prepares it to be flushed.
3335  * In that case returns 1, otherwise zero.
3336  */
3337 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3338 {
3339         struct qeth_qdio_out_buffer *buffer;
3340
3341         buffer = queue->bufs[queue->next_buf_to_fill];
3342         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3343            (buffer->next_element_to_fill > 0)) {
3344                 /* it's a packing buffer */
3345                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3346                 queue->next_buf_to_fill =
3347                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3348                 return 1;
3349         }
3350         return 0;
3351 }
3352
3353 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3354                                int count)
3355 {
3356         struct qeth_qdio_out_buffer *buf;
3357         int rc;
3358         int i;
3359         unsigned int qdio_flags;
3360
3361         for (i = index; i < index + count; ++i) {
3362                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3363                 buf = queue->bufs[bidx];
3364                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3365                                 SBAL_EFLAGS_LAST_ENTRY;
3366
3367                 if (queue->bufstates)
3368                         queue->bufstates[bidx].user = buf;
3369
3370                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3371                         continue;
3372
3373                 if (!queue->do_pack) {
3374                         if ((atomic_read(&queue->used_buffers) >=
3375                                 (QETH_HIGH_WATERMARK_PACK -
3376                                  QETH_WATERMARK_PACK_FUZZ)) &&
3377                             !atomic_read(&queue->set_pci_flags_count)) {
3378                                 /* it's likely that we'll go to packing
3379                                  * mode soon */
3380                                 atomic_inc(&queue->set_pci_flags_count);
3381                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3382                         }
3383                 } else {
3384                         if (!atomic_read(&queue->set_pci_flags_count)) {
3385                                 /*
3386                                  * there's no outstanding PCI any more, so we
3387                                  * have to request a PCI to be sure the the PCI
3388                                  * will wake at some time in the future then we
3389                                  * can flush packed buffers that might still be
3390                                  * hanging around, which can happen if no
3391                                  * further send was requested by the stack
3392                                  */
3393                                 atomic_inc(&queue->set_pci_flags_count);
3394                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3395                         }
3396                 }
3397         }
3398
3399         queue->card->dev->trans_start = jiffies;
3400         if (queue->card->options.performance_stats) {
3401                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3402                 queue->card->perf_stats.outbound_do_qdio_start_time =
3403                         qeth_get_micros();
3404         }
3405         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3406         if (atomic_read(&queue->set_pci_flags_count))
3407                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3408         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3409                      queue->queue_no, index, count);
3410         if (queue->card->options.performance_stats)
3411                 queue->card->perf_stats.outbound_do_qdio_time +=
3412                         qeth_get_micros() -
3413                         queue->card->perf_stats.outbound_do_qdio_start_time;
3414         atomic_add(count, &queue->used_buffers);
3415         if (rc) {
3416                 queue->card->stats.tx_errors += count;
3417                 /* ignore temporary SIGA errors without busy condition */
3418                 if (rc == -ENOBUFS)
3419                         return;
3420                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3421                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3422                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3423                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3424                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3425
3426                 /* this must not happen under normal circumstances. if it
3427                  * happens something is really wrong -> recover */
3428                 qeth_schedule_recovery(queue->card);
3429                 return;
3430         }
3431         if (queue->card->options.performance_stats)
3432                 queue->card->perf_stats.bufs_sent += count;
3433 }
3434
3435 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3436 {
3437         int index;
3438         int flush_cnt = 0;
3439         int q_was_packing = 0;
3440
3441         /*
3442          * check if weed have to switch to non-packing mode or if
3443          * we have to get a pci flag out on the queue
3444          */
3445         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3446             !atomic_read(&queue->set_pci_flags_count)) {
3447                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3448                                 QETH_OUT_Q_UNLOCKED) {
3449                         /*
3450                          * If we get in here, there was no action in
3451                          * do_send_packet. So, we check if there is a
3452                          * packing buffer to be flushed here.
3453                          */
3454                         netif_stop_queue(queue->card->dev);
3455                         index = queue->next_buf_to_fill;
3456                         q_was_packing = queue->do_pack;
3457                         /* queue->do_pack may change */
3458                         barrier();
3459                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3460                         if (!flush_cnt &&
3461                             !atomic_read(&queue->set_pci_flags_count))
3462                                 flush_cnt +=
3463                                         qeth_flush_buffers_on_no_pci(queue);
3464                         if (queue->card->options.performance_stats &&
3465                             q_was_packing)
3466                                 queue->card->perf_stats.bufs_sent_pack +=
3467                                         flush_cnt;
3468                         if (flush_cnt)
3469                                 qeth_flush_buffers(queue, index, flush_cnt);
3470                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3471                 }
3472         }
3473 }
3474
3475 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3476                 unsigned long card_ptr)
3477 {
3478         struct qeth_card *card = (struct qeth_card *)card_ptr;
3479
3480         if (card->dev && (card->dev->flags & IFF_UP))
3481                 napi_schedule(&card->napi);
3482 }
3483 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3484
3485 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3486 {
3487         int rc;
3488
3489         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3490                 rc = -1;
3491                 goto out;
3492         } else {
3493                 if (card->options.cq == cq) {
3494                         rc = 0;
3495                         goto out;
3496                 }
3497
3498                 if (card->state != CARD_STATE_DOWN &&
3499                     card->state != CARD_STATE_RECOVER) {
3500                         rc = -1;
3501                         goto out;
3502                 }
3503
3504                 qeth_free_qdio_buffers(card);
3505                 card->options.cq = cq;
3506                 rc = 0;
3507         }
3508 out:
3509         return rc;
3510
3511 }
3512 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3513
3514
3515 static void qeth_qdio_cq_handler(struct qeth_card *card,
3516                 unsigned int qdio_err,
3517                 unsigned int queue, int first_element, int count) {
3518         struct qeth_qdio_q *cq = card->qdio.c_q;
3519         int i;
3520         int rc;
3521
3522         if (!qeth_is_cq(card, queue))
3523                 goto out;
3524
3525         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3526         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3527         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3528
3529         if (qdio_err) {
3530                 netif_stop_queue(card->dev);
3531                 qeth_schedule_recovery(card);
3532                 goto out;
3533         }
3534
3535         if (card->options.performance_stats) {
3536                 card->perf_stats.cq_cnt++;
3537                 card->perf_stats.cq_start_time = qeth_get_micros();
3538         }
3539
3540         for (i = first_element; i < first_element + count; ++i) {
3541                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3542                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3543                 int e;
3544
3545                 e = 0;
3546                 while (buffer->element[e].addr) {
3547                         unsigned long phys_aob_addr;
3548
3549                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3550                         qeth_qdio_handle_aob(card, phys_aob_addr);
3551                         buffer->element[e].addr = NULL;
3552                         buffer->element[e].eflags = 0;
3553                         buffer->element[e].sflags = 0;
3554                         buffer->element[e].length = 0;
3555
3556                         ++e;
3557                 }
3558
3559                 buffer->element[15].eflags = 0;
3560                 buffer->element[15].sflags = 0;
3561         }
3562         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3563                     card->qdio.c_q->next_buf_to_init,
3564                     count);
3565         if (rc) {
3566                 dev_warn(&card->gdev->dev,
3567                         "QDIO reported an error, rc=%i\n", rc);
3568                 QETH_CARD_TEXT(card, 2, "qcqherr");
3569         }
3570         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3571                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3572
3573         netif_wake_queue(card->dev);
3574
3575         if (card->options.performance_stats) {
3576                 int delta_t = qeth_get_micros();
3577                 delta_t -= card->perf_stats.cq_start_time;
3578                 card->perf_stats.cq_time += delta_t;
3579         }
3580 out:
3581         return;
3582 }
3583
3584 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3585                 unsigned int queue, int first_elem, int count,
3586                 unsigned long card_ptr)
3587 {
3588         struct qeth_card *card = (struct qeth_card *)card_ptr;
3589
3590         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3591         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3592
3593         if (qeth_is_cq(card, queue))
3594                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3595         else if (qdio_err)
3596                 qeth_schedule_recovery(card);
3597
3598
3599 }
3600 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3601
3602 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3603                 unsigned int qdio_error, int __queue, int first_element,
3604                 int count, unsigned long card_ptr)
3605 {
3606         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3607         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3608         struct qeth_qdio_out_buffer *buffer;
3609         int i;
3610
3611         QETH_CARD_TEXT(card, 6, "qdouhdl");
3612         if (qdio_error & QDIO_ERROR_FATAL) {
3613                 QETH_CARD_TEXT(card, 2, "achkcond");
3614                 netif_stop_queue(card->dev);
3615                 qeth_schedule_recovery(card);
3616                 return;
3617         }
3618         if (card->options.performance_stats) {
3619                 card->perf_stats.outbound_handler_cnt++;
3620                 card->perf_stats.outbound_handler_start_time =
3621                         qeth_get_micros();
3622         }
3623         for (i = first_element; i < (first_element + count); ++i) {
3624                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3625                 buffer = queue->bufs[bidx];
3626                 qeth_handle_send_error(card, buffer, qdio_error);
3627
3628                 if (queue->bufstates &&
3629                     (queue->bufstates[bidx].flags &
3630                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3631                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3632
3633                         if (atomic_cmpxchg(&buffer->state,
3634                                            QETH_QDIO_BUF_PRIMED,
3635                                            QETH_QDIO_BUF_PENDING) ==
3636                                 QETH_QDIO_BUF_PRIMED) {
3637                                 qeth_notify_skbs(queue, buffer,
3638                                                  TX_NOTIFY_PENDING);
3639                         }
3640                         buffer->aob = queue->bufstates[bidx].aob;
3641                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3642                         QETH_CARD_TEXT(queue->card, 5, "aob");
3643                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3644                                         virt_to_phys(buffer->aob));
3645                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3646                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3647                                 qeth_schedule_recovery(card);
3648                         }
3649                 } else {
3650                         if (card->options.cq == QETH_CQ_ENABLED) {
3651                                 enum iucv_tx_notify n;
3652
3653                                 n = qeth_compute_cq_notification(
3654                                         buffer->buffer->element[15].sflags, 0);
3655                                 qeth_notify_skbs(queue, buffer, n);
3656                         }
3657
3658                         qeth_clear_output_buffer(queue, buffer,
3659                                                 QETH_QDIO_BUF_EMPTY);
3660                 }
3661                 qeth_cleanup_handled_pending(queue, bidx, 0);
3662         }
3663         atomic_sub(count, &queue->used_buffers);
3664         /* check if we need to do something on this outbound queue */
3665         if (card->info.type != QETH_CARD_TYPE_IQD)
3666                 qeth_check_outbound_queue(queue);
3667
3668         netif_wake_queue(queue->card->dev);
3669         if (card->options.performance_stats)
3670                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3671                         card->perf_stats.outbound_handler_start_time;
3672 }
3673 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3674
3675 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3676                         int ipv, int cast_type)
3677 {
3678         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3679                      card->info.type == QETH_CARD_TYPE_OSX))
3680                 return card->qdio.default_out_queue;
3681         switch (card->qdio.no_out_queues) {
3682         case 4:
3683                 if (cast_type && card->info.is_multicast_different)
3684                         return card->info.is_multicast_different &
3685                                 (card->qdio.no_out_queues - 1);
3686                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3687                         const u8 tos = ip_hdr(skb)->tos;
3688
3689                         if (card->qdio.do_prio_queueing ==
3690                                 QETH_PRIO_Q_ING_TOS) {
3691                                 if (tos & IP_TOS_NOTIMPORTANT)
3692                                         return 3;
3693                                 if (tos & IP_TOS_HIGHRELIABILITY)
3694                                         return 2;
3695                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3696                                         return 1;
3697                                 if (tos & IP_TOS_LOWDELAY)
3698                                         return 0;
3699                         }
3700                         if (card->qdio.do_prio_queueing ==
3701                                 QETH_PRIO_Q_ING_PREC)
3702                                 return 3 - (tos >> 6);
3703                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3704                         /* TODO: IPv6!!! */
3705                 }
3706                 return card->qdio.default_out_queue;
3707         case 1: /* fallthrough for single-out-queue 1920-device */
3708         default:
3709                 return card->qdio.default_out_queue;
3710         }
3711 }
3712 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3713
3714 int qeth_get_elements_for_frags(struct sk_buff *skb)
3715 {
3716         int cnt, length, e, elements = 0;
3717         struct skb_frag_struct *frag;
3718         char *data;
3719
3720         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3721                 frag = &skb_shinfo(skb)->frags[cnt];
3722                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3723                         frag->page_offset;
3724                 length = frag->size;
3725                 e = PFN_UP((unsigned long)data + length - 1) -
3726                         PFN_DOWN((unsigned long)data);
3727                 elements += e;
3728         }
3729         return elements;
3730 }
3731 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3732
3733 int qeth_get_elements_no(struct qeth_card *card,
3734                      struct sk_buff *skb, int elems)
3735 {
3736         int dlen = skb->len - skb->data_len;
3737         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3738                 PFN_DOWN((unsigned long)skb->data);
3739
3740         elements_needed += qeth_get_elements_for_frags(skb);
3741
3742         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3743                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3744                         "(Number=%d / Length=%d). Discarded.\n",
3745                         (elements_needed+elems), skb->len);
3746                 return 0;
3747         }
3748         return elements_needed;
3749 }
3750 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3751
3752 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3753 {
3754         int hroom, inpage, rest;
3755
3756         if (((unsigned long)skb->data & PAGE_MASK) !=
3757             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3758                 hroom = skb_headroom(skb);
3759                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3760                 rest = len - inpage;
3761                 if (rest > hroom)
3762                         return 1;
3763                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3764                 skb->data -= rest;
3765                 skb->tail -= rest;
3766                 *hdr = (struct qeth_hdr *)skb->data;
3767                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3768         }
3769         return 0;
3770 }
3771 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3772
3773 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3774         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3775         int offset)
3776 {
3777         int length = skb->len - skb->data_len;
3778         int length_here;
3779         int element;
3780         char *data;
3781         int first_lap, cnt;
3782         struct skb_frag_struct *frag;
3783
3784         element = *next_element_to_fill;
3785         data = skb->data;
3786         first_lap = (is_tso == 0 ? 1 : 0);
3787
3788         if (offset >= 0) {
3789                 data = skb->data + offset;
3790                 length -= offset;
3791                 first_lap = 0;
3792         }
3793
3794         while (length > 0) {
3795                 /* length_here is the remaining amount of data in this page */
3796                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3797                 if (length < length_here)
3798                         length_here = length;
3799
3800                 buffer->element[element].addr = data;
3801                 buffer->element[element].length = length_here;
3802                 length -= length_here;
3803                 if (!length) {
3804                         if (first_lap)
3805                                 if (skb_shinfo(skb)->nr_frags)
3806                                         buffer->element[element].eflags =
3807                                                 SBAL_EFLAGS_FIRST_FRAG;
3808                                 else
3809                                         buffer->element[element].eflags = 0;
3810                         else
3811                                 buffer->element[element].eflags =
3812                                     SBAL_EFLAGS_MIDDLE_FRAG;
3813                 } else {
3814                         if (first_lap)
3815                                 buffer->element[element].eflags =
3816                                     SBAL_EFLAGS_FIRST_FRAG;
3817                         else
3818                                 buffer->element[element].eflags =
3819                                     SBAL_EFLAGS_MIDDLE_FRAG;
3820                 }
3821                 data += length_here;
3822                 element++;
3823                 first_lap = 0;
3824         }
3825
3826         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3827                 frag = &skb_shinfo(skb)->frags[cnt];
3828                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3829                         frag->page_offset;
3830                 length = frag->size;
3831                 while (length > 0) {
3832                         length_here = PAGE_SIZE -
3833                                 ((unsigned long) data % PAGE_SIZE);
3834                         if (length < length_here)
3835                                 length_here = length;
3836
3837                         buffer->element[element].addr = data;
3838                         buffer->element[element].length = length_here;
3839                         buffer->element[element].eflags =
3840                                 SBAL_EFLAGS_MIDDLE_FRAG;
3841                         length -= length_here;
3842                         data += length_here;
3843                         element++;
3844                 }
3845         }
3846
3847         if (buffer->element[element - 1].eflags)
3848                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3849         *next_element_to_fill = element;
3850 }
3851
3852 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3853                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3854                 struct qeth_hdr *hdr, int offset, int hd_len)
3855 {
3856         struct qdio_buffer *buffer;
3857         int flush_cnt = 0, hdr_len, large_send = 0;
3858
3859         buffer = buf->buffer;
3860         atomic_inc(&skb->users);
3861         skb_queue_tail(&buf->skb_list, skb);
3862
3863         /*check first on TSO ....*/
3864         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3865                 int element = buf->next_element_to_fill;
3866
3867                 hdr_len = sizeof(struct qeth_hdr_tso) +
3868                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3869                 /*fill first buffer entry only with header information */
3870                 buffer->element[element].addr = skb->data;
3871                 buffer->element[element].length = hdr_len;
3872                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3873                 buf->next_element_to_fill++;
3874                 skb->data += hdr_len;
3875                 skb->len  -= hdr_len;
3876                 large_send = 1;
3877         }
3878
3879         if (offset >= 0) {
3880                 int element = buf->next_element_to_fill;
3881                 buffer->element[element].addr = hdr;
3882                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3883                                                         hd_len;
3884                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3885                 buf->is_header[element] = 1;
3886                 buf->next_element_to_fill++;
3887         }
3888
3889         __qeth_fill_buffer(skb, buffer, large_send,
3890                 (int *)&buf->next_element_to_fill, offset);
3891
3892         if (!queue->do_pack) {
3893                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3894                 /* set state to PRIMED -> will be flushed */
3895                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3896                 flush_cnt = 1;
3897         } else {
3898                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3899                 if (queue->card->options.performance_stats)
3900                         queue->card->perf_stats.skbs_sent_pack++;
3901                 if (buf->next_element_to_fill >=
3902                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3903                         /*
3904                          * packed buffer if full -> set state PRIMED
3905                          * -> will be flushed
3906                          */
3907                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3908                         flush_cnt = 1;
3909                 }
3910         }
3911         return flush_cnt;
3912 }
3913
3914 int qeth_do_send_packet_fast(struct qeth_card *card,
3915                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3916                 struct qeth_hdr *hdr, int elements_needed,
3917                 int offset, int hd_len)
3918 {
3919         struct qeth_qdio_out_buffer *buffer;
3920         int index;
3921
3922         /* spin until we get the queue ... */
3923         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3924                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3925         /* ... now we've got the queue */
3926         index = queue->next_buf_to_fill;
3927         buffer = queue->bufs[queue->next_buf_to_fill];
3928         /*
3929          * check if buffer is empty to make sure that we do not 'overtake'
3930          * ourselves and try to fill a buffer that is already primed
3931          */
3932         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3933                 goto out;
3934         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3935                                           QDIO_MAX_BUFFERS_PER_Q;
3936         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3937         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3938         qeth_flush_buffers(queue, index, 1);
3939         return 0;
3940 out:
3941         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3942         return -EBUSY;
3943 }
3944 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3945
3946 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3947                 struct sk_buff *skb, struct qeth_hdr *hdr,
3948                 int elements_needed)
3949 {
3950         struct qeth_qdio_out_buffer *buffer;
3951         int start_index;
3952         int flush_count = 0;
3953         int do_pack = 0;
3954         int tmp;
3955         int rc = 0;
3956
3957         /* spin until we get the queue ... */
3958         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3959                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3960         start_index = queue->next_buf_to_fill;
3961         buffer = queue->bufs[queue->next_buf_to_fill];
3962         /*
3963          * check if buffer is empty to make sure that we do not 'overtake'
3964          * ourselves and try to fill a buffer that is already primed
3965          */
3966         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3967                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3968                 return -EBUSY;
3969         }
3970         /* check if we need to switch packing state of this queue */
3971         qeth_switch_to_packing_if_needed(queue);
3972         if (queue->do_pack) {
3973                 do_pack = 1;
3974                 /* does packet fit in current buffer? */
3975                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3976                     buffer->next_element_to_fill) < elements_needed) {
3977                         /* ... no -> set state PRIMED */
3978                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3979                         flush_count++;
3980                         queue->next_buf_to_fill =
3981                                 (queue->next_buf_to_fill + 1) %
3982                                 QDIO_MAX_BUFFERS_PER_Q;
3983                         buffer = queue->bufs[queue->next_buf_to_fill];
3984                         /* we did a step forward, so check buffer state
3985                          * again */
3986                         if (atomic_read(&buffer->state) !=
3987                             QETH_QDIO_BUF_EMPTY) {
3988                                 qeth_flush_buffers(queue, start_index,
3989                                                            flush_count);
3990                                 atomic_set(&queue->state,
3991                                                 QETH_OUT_Q_UNLOCKED);
3992                                 return -EBUSY;
3993                         }
3994                 }
3995         }
3996         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3997         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3998                                   QDIO_MAX_BUFFERS_PER_Q;
3999         flush_count += tmp;
4000         if (flush_count)
4001                 qeth_flush_buffers(queue, start_index, flush_count);
4002         else if (!atomic_read(&queue->set_pci_flags_count))
4003                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4004         /*
4005          * queue->state will go from LOCKED -> UNLOCKED or from
4006          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4007          * (switch packing state or flush buffer to get another pci flag out).
4008          * In that case we will enter this loop
4009          */
4010         while (atomic_dec_return(&queue->state)) {
4011                 flush_count = 0;
4012                 start_index = queue->next_buf_to_fill;
4013                 /* check if we can go back to non-packing state */
4014                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4015                 /*
4016                  * check if we need to flush a packing buffer to get a pci
4017                  * flag out on the queue
4018                  */
4019                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4020                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4021                 if (flush_count)
4022                         qeth_flush_buffers(queue, start_index, flush_count);
4023         }
4024         /* at this point the queue is UNLOCKED again */
4025         if (queue->card->options.performance_stats && do_pack)
4026                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4027
4028         return rc;
4029 }
4030 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4031
4032 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4033                 struct qeth_reply *reply, unsigned long data)
4034 {
4035         struct qeth_ipa_cmd *cmd;
4036         struct qeth_ipacmd_setadpparms *setparms;
4037
4038         QETH_CARD_TEXT(card, 4, "prmadpcb");
4039
4040         cmd = (struct qeth_ipa_cmd *) data;
4041         setparms = &(cmd->data.setadapterparms);
4042
4043         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4044         if (cmd->hdr.return_code) {
4045                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4046                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4047         }
4048         card->info.promisc_mode = setparms->data.mode;
4049         return 0;
4050 }
4051
4052 void qeth_setadp_promisc_mode(struct qeth_card *card)
4053 {
4054         enum qeth_ipa_promisc_modes mode;
4055         struct net_device *dev = card->dev;
4056         struct qeth_cmd_buffer *iob;
4057         struct qeth_ipa_cmd *cmd;
4058
4059         QETH_CARD_TEXT(card, 4, "setprom");
4060
4061         if (((dev->flags & IFF_PROMISC) &&
4062              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4063             (!(dev->flags & IFF_PROMISC) &&
4064              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4065                 return;
4066         mode = SET_PROMISC_MODE_OFF;
4067         if (dev->flags & IFF_PROMISC)
4068                 mode = SET_PROMISC_MODE_ON;
4069         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4070
4071         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4072                         sizeof(struct qeth_ipacmd_setadpparms));
4073         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4074         cmd->data.setadapterparms.data.mode = mode;
4075         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4076 }
4077 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4078
4079 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4080 {
4081         struct qeth_card *card;
4082         char dbf_text[15];
4083
4084         card = dev->ml_priv;
4085
4086         QETH_CARD_TEXT(card, 4, "chgmtu");
4087         sprintf(dbf_text, "%8x", new_mtu);
4088         QETH_CARD_TEXT(card, 4, dbf_text);
4089
4090         if (new_mtu < 64)
4091                 return -EINVAL;
4092         if (new_mtu > 65535)
4093                 return -EINVAL;
4094         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4095             (!qeth_mtu_is_valid(card, new_mtu)))
4096                 return -EINVAL;
4097         dev->mtu = new_mtu;
4098         return 0;
4099 }
4100 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4101
4102 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4103 {
4104         struct qeth_card *card;
4105
4106         card = dev->ml_priv;
4107
4108         QETH_CARD_TEXT(card, 5, "getstat");
4109
4110         return &card->stats;
4111 }
4112 EXPORT_SYMBOL_GPL(qeth_get_stats);
4113
4114 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4115                 struct qeth_reply *reply, unsigned long data)
4116 {
4117         struct qeth_ipa_cmd *cmd;
4118
4119         QETH_CARD_TEXT(card, 4, "chgmaccb");
4120
4121         cmd = (struct qeth_ipa_cmd *) data;
4122         if (!card->options.layer2 ||
4123             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4124                 memcpy(card->dev->dev_addr,
4125                        &cmd->data.setadapterparms.data.change_addr.addr,
4126                        OSA_ADDR_LEN);
4127                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4128         }
4129         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4130         return 0;
4131 }
4132
4133 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4134 {
4135         int rc;
4136         struct qeth_cmd_buffer *iob;
4137         struct qeth_ipa_cmd *cmd;
4138
4139         QETH_CARD_TEXT(card, 4, "chgmac");
4140
4141         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4142                                    sizeof(struct qeth_ipacmd_setadpparms));
4143         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4144         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4145         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4146         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4147                card->dev->dev_addr, OSA_ADDR_LEN);
4148         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4149                                NULL);
4150         return rc;
4151 }
4152 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4153
4154 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4155                 struct qeth_reply *reply, unsigned long data)
4156 {
4157         struct qeth_ipa_cmd *cmd;
4158         struct qeth_set_access_ctrl *access_ctrl_req;
4159         int fallback = *(int *)reply->param;
4160
4161         QETH_CARD_TEXT(card, 4, "setaccb");
4162
4163         cmd = (struct qeth_ipa_cmd *) data;
4164         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4165         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4166         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4167         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4168                 cmd->data.setadapterparms.hdr.return_code);
4169         if (cmd->data.setadapterparms.hdr.return_code !=
4170                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4171                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4172                                 card->gdev->dev.kobj.name,
4173                                 access_ctrl_req->subcmd_code,
4174                                 cmd->data.setadapterparms.hdr.return_code);
4175         switch (cmd->data.setadapterparms.hdr.return_code) {
4176         case SET_ACCESS_CTRL_RC_SUCCESS:
4177                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4178                         dev_info(&card->gdev->dev,
4179                             "QDIO data connection isolation is deactivated\n");
4180                 } else {
4181                         dev_info(&card->gdev->dev,
4182                             "QDIO data connection isolation is activated\n");
4183                 }
4184                 break;
4185         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4186                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4187                                 "deactivated\n", dev_name(&card->gdev->dev));
4188                 if (fallback)
4189                         card->options.isolation = card->options.prev_isolation;
4190                 break;
4191         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4192                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4193                                 " activated\n", dev_name(&card->gdev->dev));
4194                 if (fallback)
4195                         card->options.isolation = card->options.prev_isolation;
4196                 break;
4197         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4198                 dev_err(&card->gdev->dev, "Adapter does not "
4199                         "support QDIO data connection isolation\n");
4200                 break;
4201         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4202                 dev_err(&card->gdev->dev,
4203                         "Adapter is dedicated. "
4204                         "QDIO data connection isolation not supported\n");
4205                 if (fallback)
4206                         card->options.isolation = card->options.prev_isolation;
4207                 break;
4208         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4209                 dev_err(&card->gdev->dev,
4210                         "TSO does not permit QDIO data connection isolation\n");
4211                 if (fallback)
4212                         card->options.isolation = card->options.prev_isolation;
4213                 break;
4214         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4215                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4216                         "support reflective relay mode\n");
4217                 if (fallback)
4218                         card->options.isolation = card->options.prev_isolation;
4219                 break;
4220         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4221                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4222                                         "enabled at the adjacent switch port");
4223                 if (fallback)
4224                         card->options.isolation = card->options.prev_isolation;
4225                 break;
4226         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4227                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4228                                         "at the adjacent switch failed\n");
4229                 break;
4230         default:
4231                 /* this should never happen */
4232                 if (fallback)
4233                         card->options.isolation = card->options.prev_isolation;
4234                 break;
4235         }
4236         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4237         return 0;
4238 }
4239
4240 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4241                 enum qeth_ipa_isolation_modes isolation, int fallback)
4242 {
4243         int rc;
4244         struct qeth_cmd_buffer *iob;
4245         struct qeth_ipa_cmd *cmd;
4246         struct qeth_set_access_ctrl *access_ctrl_req;
4247
4248         QETH_CARD_TEXT(card, 4, "setacctl");
4249
4250         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4251         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4252
4253         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4254                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4255                                    sizeof(struct qeth_set_access_ctrl));
4256         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4257         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4258         access_ctrl_req->subcmd_code = isolation;
4259
4260         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4261                                &fallback);
4262         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4263         return rc;
4264 }
4265
4266 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4267 {
4268         int rc = 0;
4269
4270         QETH_CARD_TEXT(card, 4, "setactlo");
4271
4272         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4273              card->info.type == QETH_CARD_TYPE_OSX) &&
4274              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4275                 rc = qeth_setadpparms_set_access_ctrl(card,
4276                         card->options.isolation, fallback);
4277                 if (rc) {
4278                         QETH_DBF_MESSAGE(3,
4279                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4280                                 card->gdev->dev.kobj.name,
4281                                 rc);
4282                         rc = -EOPNOTSUPP;
4283                 }
4284         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4285                 card->options.isolation = ISOLATION_MODE_NONE;
4286
4287                 dev_err(&card->gdev->dev, "Adapter does not "
4288                         "support QDIO data connection isolation\n");
4289                 rc = -EOPNOTSUPP;
4290         }
4291         return rc;
4292 }
4293 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4294
4295 void qeth_tx_timeout(struct net_device *dev)
4296 {
4297         struct qeth_card *card;
4298
4299         card = dev->ml_priv;
4300         QETH_CARD_TEXT(card, 4, "txtimeo");
4301         card->stats.tx_errors++;
4302         qeth_schedule_recovery(card);
4303 }
4304 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4305
4306 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4307 {
4308         struct qeth_card *card = dev->ml_priv;
4309         int rc = 0;
4310
4311         switch (regnum) {
4312         case MII_BMCR: /* Basic mode control register */
4313                 rc = BMCR_FULLDPLX;
4314                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4315                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4316                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4317                         rc |= BMCR_SPEED100;
4318                 break;
4319         case MII_BMSR: /* Basic mode status register */
4320                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4321                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4322                      BMSR_100BASE4;
4323                 break;
4324         case MII_PHYSID1: /* PHYS ID 1 */
4325                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4326                      dev->dev_addr[2];
4327                 rc = (rc >> 5) & 0xFFFF;
4328                 break;
4329         case MII_PHYSID2: /* PHYS ID 2 */
4330                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4331                 break;
4332         case MII_ADVERTISE: /* Advertisement control reg */
4333                 rc = ADVERTISE_ALL;
4334                 break;
4335         case MII_LPA: /* Link partner ability reg */
4336                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4337                      LPA_100BASE4 | LPA_LPACK;
4338                 break;
4339         case MII_EXPANSION: /* Expansion register */
4340                 break;
4341         case MII_DCOUNTER: /* disconnect counter */
4342                 break;
4343         case MII_FCSCOUNTER: /* false carrier counter */
4344                 break;
4345         case MII_NWAYTEST: /* N-way auto-neg test register */
4346                 break;
4347         case MII_RERRCOUNTER: /* rx error counter */
4348                 rc = card->stats.rx_errors;
4349                 break;
4350         case MII_SREVISION: /* silicon revision */
4351                 break;
4352         case MII_RESV1: /* reserved 1 */
4353                 break;
4354         case MII_LBRERROR: /* loopback, rx, bypass error */
4355                 break;
4356         case MII_PHYADDR: /* physical address */
4357                 break;
4358         case MII_RESV2: /* reserved 2 */
4359                 break;
4360         case MII_TPISTATUS: /* TPI status for 10mbps */
4361                 break;
4362         case MII_NCONFIG: /* network interface config */
4363                 break;
4364         default:
4365                 break;
4366         }
4367         return rc;
4368 }
4369 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4370
4371 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4372                 struct qeth_cmd_buffer *iob, int len,
4373                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4374                         unsigned long),
4375                 void *reply_param)
4376 {
4377         u16 s1, s2;
4378
4379         QETH_CARD_TEXT(card, 4, "sendsnmp");
4380
4381         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4382         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4383                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4384         /* adjust PDU length fields in IPA_PDU_HEADER */
4385         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4386         s2 = (u32) len;
4387         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4388         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4389         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4390         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4391         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4392                                       reply_cb, reply_param);
4393 }
4394
4395 static int qeth_snmp_command_cb(struct qeth_card *card,
4396                 struct qeth_reply *reply, unsigned long sdata)
4397 {
4398         struct qeth_ipa_cmd *cmd;
4399         struct qeth_arp_query_info *qinfo;
4400         struct qeth_snmp_cmd *snmp;
4401         unsigned char *data;
4402         __u16 data_len;
4403
4404         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4405
4406         cmd = (struct qeth_ipa_cmd *) sdata;
4407         data = (unsigned char *)((char *)cmd - reply->offset);
4408         qinfo = (struct qeth_arp_query_info *) reply->param;
4409         snmp = &cmd->data.setadapterparms.data.snmp;
4410
4411         if (cmd->hdr.return_code) {
4412                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4413                 return 0;
4414         }
4415         if (cmd->data.setadapterparms.hdr.return_code) {
4416                 cmd->hdr.return_code =
4417                         cmd->data.setadapterparms.hdr.return_code;
4418                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4419                 return 0;
4420         }
4421         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4422         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4423                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4424         else
4425                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4426
4427         /* check if there is enough room in userspace */
4428         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4429                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4430                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4431                 return 0;
4432         }
4433         QETH_CARD_TEXT_(card, 4, "snore%i",
4434                        cmd->data.setadapterparms.hdr.used_total);
4435         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4436                 cmd->data.setadapterparms.hdr.seq_no);
4437         /*copy entries to user buffer*/
4438         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4439                 memcpy(qinfo->udata + qinfo->udata_offset,
4440                        (char *)snmp,
4441                        data_len + offsetof(struct qeth_snmp_cmd, data));
4442                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4443         } else {
4444                 memcpy(qinfo->udata + qinfo->udata_offset,
4445                        (char *)&snmp->request, data_len);
4446         }
4447         qinfo->udata_offset += data_len;
4448         /* check if all replies received ... */
4449                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4450                                cmd->data.setadapterparms.hdr.used_total);
4451                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4452                                cmd->data.setadapterparms.hdr.seq_no);
4453         if (cmd->data.setadapterparms.hdr.seq_no <
4454             cmd->data.setadapterparms.hdr.used_total)
4455                 return 1;
4456         return 0;
4457 }
4458
4459 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4460 {
4461         struct qeth_cmd_buffer *iob;
4462         struct qeth_ipa_cmd *cmd;
4463         struct qeth_snmp_ureq *ureq;
4464         unsigned int req_len;
4465         struct qeth_arp_query_info qinfo = {0, };
4466         int rc = 0;
4467
4468         QETH_CARD_TEXT(card, 3, "snmpcmd");
4469
4470         if (card->info.guestlan)
4471                 return -EOPNOTSUPP;
4472
4473         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4474             (!card->options.layer2)) {
4475                 return -EOPNOTSUPP;
4476         }
4477         /* skip 4 bytes (data_len struct member) to get req_len */
4478         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4479                 return -EFAULT;
4480         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4481                        sizeof(struct qeth_ipacmd_hdr) -
4482                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4483                 return -EINVAL;
4484         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4485         if (IS_ERR(ureq)) {
4486                 QETH_CARD_TEXT(card, 2, "snmpnome");
4487                 return PTR_ERR(ureq);
4488         }
4489         qinfo.udata_len = ureq->hdr.data_len;
4490         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4491         if (!qinfo.udata) {
4492                 kfree(ureq);
4493                 return -ENOMEM;
4494         }
4495         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4496
4497         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4498                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4499         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4500         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4501         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4502                                     qeth_snmp_command_cb, (void *)&qinfo);
4503         if (rc)
4504                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4505                            QETH_CARD_IFNAME(card), rc);
4506         else {
4507                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4508                         rc = -EFAULT;
4509         }
4510
4511         kfree(ureq);
4512         kfree(qinfo.udata);
4513         return rc;
4514 }
4515 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4516
4517 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4518                 struct qeth_reply *reply, unsigned long data)
4519 {
4520         struct qeth_ipa_cmd *cmd;
4521         struct qeth_qoat_priv *priv;
4522         char *resdata;
4523         int resdatalen;
4524
4525         QETH_CARD_TEXT(card, 3, "qoatcb");
4526
4527         cmd = (struct qeth_ipa_cmd *)data;
4528         priv = (struct qeth_qoat_priv *)reply->param;
4529         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4530         resdata = (char *)data + 28;
4531
4532         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4533                 cmd->hdr.return_code = IPA_RC_FFFF;
4534                 return 0;
4535         }
4536
4537         memcpy((priv->buffer + priv->response_len), resdata,
4538                 resdatalen);
4539         priv->response_len += resdatalen;
4540
4541         if (cmd->data.setadapterparms.hdr.seq_no <
4542             cmd->data.setadapterparms.hdr.used_total)
4543                 return 1;
4544         return 0;
4545 }
4546
4547 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4548 {
4549         int rc = 0;
4550         struct qeth_cmd_buffer *iob;
4551         struct qeth_ipa_cmd *cmd;
4552         struct qeth_query_oat *oat_req;
4553         struct qeth_query_oat_data oat_data;
4554         struct qeth_qoat_priv priv;
4555         void __user *tmp;
4556
4557         QETH_CARD_TEXT(card, 3, "qoatcmd");
4558
4559         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4560                 rc = -EOPNOTSUPP;
4561                 goto out;
4562         }
4563
4564         if (copy_from_user(&oat_data, udata,
4565             sizeof(struct qeth_query_oat_data))) {
4566                         rc = -EFAULT;
4567                         goto out;
4568         }
4569
4570         priv.buffer_len = oat_data.buffer_len;
4571         priv.response_len = 0;
4572         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4573         if (!priv.buffer) {
4574                 rc = -ENOMEM;
4575                 goto out;
4576         }
4577
4578         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4579                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4580                                    sizeof(struct qeth_query_oat));
4581         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4582         oat_req = &cmd->data.setadapterparms.data.query_oat;
4583         oat_req->subcmd_code = oat_data.command;
4584
4585         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4586                                &priv);
4587         if (!rc) {
4588                 if (is_compat_task())
4589                         tmp = compat_ptr(oat_data.ptr);
4590                 else
4591                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4592
4593                 if (copy_to_user(tmp, priv.buffer,
4594                     priv.response_len)) {
4595                         rc = -EFAULT;
4596                         goto out_free;
4597                 }
4598
4599                 oat_data.response_len = priv.response_len;
4600
4601                 if (copy_to_user(udata, &oat_data,
4602                     sizeof(struct qeth_query_oat_data)))
4603                         rc = -EFAULT;
4604         } else
4605                 if (rc == IPA_RC_FFFF)
4606                         rc = -EFAULT;
4607
4608 out_free:
4609         kfree(priv.buffer);
4610 out:
4611         return rc;
4612 }
4613 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4614
4615 int qeth_query_card_info_cb(struct qeth_card *card,
4616                         struct qeth_reply *reply, unsigned long data)
4617 {
4618         struct qeth_ipa_cmd *cmd;
4619         struct qeth_query_card_info *card_info;
4620         struct carrier_info *carrier_info;
4621
4622         QETH_CARD_TEXT(card, 2, "qcrdincb");
4623         carrier_info = (struct carrier_info *)reply->param;
4624         cmd = (struct qeth_ipa_cmd *)data;
4625         card_info = &cmd->data.setadapterparms.data.card_info;
4626         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4627                 carrier_info->card_type = card_info->card_type;
4628                 carrier_info->port_mode = card_info->port_mode;
4629                 carrier_info->port_speed = card_info->port_speed;
4630         }
4631
4632         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4633         return 0;
4634 }
4635
4636 int qeth_query_card_info(struct qeth_card *card,
4637                                 struct carrier_info *carrier_info)
4638 {
4639         struct qeth_cmd_buffer *iob;
4640
4641         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4642         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4643                 return -EOPNOTSUPP;
4644         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4645                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4646         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4647                                         (void *)carrier_info);
4648 }
4649 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4650
4651 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4652 {
4653         switch (card->info.type) {
4654         case QETH_CARD_TYPE_IQD:
4655                 return 2;
4656         default:
4657                 return 0;
4658         }
4659 }
4660
4661 static void qeth_determine_capabilities(struct qeth_card *card)
4662 {
4663         int rc;
4664         int length;
4665         char *prcd;
4666         struct ccw_device *ddev;
4667         int ddev_offline = 0;
4668
4669         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4670         ddev = CARD_DDEV(card);
4671         if (!ddev->online) {
4672                 ddev_offline = 1;
4673                 rc = ccw_device_set_online(ddev);
4674                 if (rc) {
4675                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4676                         goto out;
4677                 }
4678         }
4679
4680         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4681         if (rc) {
4682                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4683                         dev_name(&card->gdev->dev), rc);
4684                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4685                 goto out_offline;
4686         }
4687         qeth_configure_unitaddr(card, prcd);
4688         if (ddev_offline)
4689                 qeth_configure_blkt_default(card, prcd);
4690         kfree(prcd);
4691
4692         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4693         if (rc)
4694                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4695
4696         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4697         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4698         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4699         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4700         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4701             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4702             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4703                 dev_info(&card->gdev->dev,
4704                         "Completion Queueing supported\n");
4705         } else {
4706                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4707         }
4708
4709
4710 out_offline:
4711         if (ddev_offline == 1)
4712                 ccw_device_set_offline(ddev);
4713 out:
4714         return;
4715 }
4716
4717 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4718         struct qdio_buffer **in_sbal_ptrs,
4719         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4720         int i;
4721
4722         if (card->options.cq == QETH_CQ_ENABLED) {
4723                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4724                              (card->qdio.no_in_queues - 1);
4725                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4726                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4727                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4728                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4729                 }
4730
4731                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4732         }
4733 }
4734
4735 static int qeth_qdio_establish(struct qeth_card *card)
4736 {
4737         struct qdio_initialize init_data;
4738         char *qib_param_field;
4739         struct qdio_buffer **in_sbal_ptrs;
4740         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4741         struct qdio_buffer **out_sbal_ptrs;
4742         int i, j, k;
4743         int rc = 0;
4744
4745         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4746
4747         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4748                               GFP_KERNEL);
4749         if (!qib_param_field) {
4750                 rc =  -ENOMEM;
4751                 goto out_free_nothing;
4752         }
4753
4754         qeth_create_qib_param_field(card, qib_param_field);
4755         qeth_create_qib_param_field_blkt(card, qib_param_field);
4756
4757         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4758                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4759                                GFP_KERNEL);
4760         if (!in_sbal_ptrs) {
4761                 rc = -ENOMEM;
4762                 goto out_free_qib_param;
4763         }
4764         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4765                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4766                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4767         }
4768
4769         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4770                                    GFP_KERNEL);
4771         if (!queue_start_poll) {
4772                 rc = -ENOMEM;
4773                 goto out_free_in_sbals;
4774         }
4775         for (i = 0; i < card->qdio.no_in_queues; ++i)
4776                 queue_start_poll[i] = card->discipline->start_poll;
4777
4778         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4779
4780         out_sbal_ptrs =
4781                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4782                         sizeof(void *), GFP_KERNEL);
4783         if (!out_sbal_ptrs) {
4784                 rc = -ENOMEM;
4785                 goto out_free_queue_start_poll;
4786         }
4787         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4788                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4789                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4790                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4791                 }
4792
4793         memset(&init_data, 0, sizeof(struct qdio_initialize));
4794         init_data.cdev                   = CARD_DDEV(card);
4795         init_data.q_format               = qeth_get_qdio_q_format(card);
4796         init_data.qib_param_field_format = 0;
4797         init_data.qib_param_field        = qib_param_field;
4798         init_data.no_input_qs            = card->qdio.no_in_queues;
4799         init_data.no_output_qs           = card->qdio.no_out_queues;
4800         init_data.input_handler          = card->discipline->input_handler;
4801         init_data.output_handler         = card->discipline->output_handler;
4802         init_data.queue_start_poll_array = queue_start_poll;
4803         init_data.int_parm               = (unsigned long) card;
4804         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4805         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4806         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4807         init_data.scan_threshold =
4808                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4809
4810         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4811                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4812                 rc = qdio_allocate(&init_data);
4813                 if (rc) {
4814                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4815                         goto out;
4816                 }
4817                 rc = qdio_establish(&init_data);
4818                 if (rc) {
4819                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4820                         qdio_free(CARD_DDEV(card));
4821                 }
4822         }
4823
4824         switch (card->options.cq) {
4825         case QETH_CQ_ENABLED:
4826                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4827                 break;
4828         case QETH_CQ_DISABLED:
4829                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4830                 break;
4831         default:
4832                 break;
4833         }
4834 out:
4835         kfree(out_sbal_ptrs);
4836 out_free_queue_start_poll:
4837         kfree(queue_start_poll);
4838 out_free_in_sbals:
4839         kfree(in_sbal_ptrs);
4840 out_free_qib_param:
4841         kfree(qib_param_field);
4842 out_free_nothing:
4843         return rc;
4844 }
4845
4846 static void qeth_core_free_card(struct qeth_card *card)
4847 {
4848
4849         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4850         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4851         qeth_clean_channel(&card->read);
4852         qeth_clean_channel(&card->write);
4853         if (card->dev)
4854                 free_netdev(card->dev);
4855         kfree(card->ip_tbd_list);
4856         qeth_free_qdio_buffers(card);
4857         unregister_service_level(&card->qeth_service_level);
4858         kfree(card);
4859 }
4860
4861 void qeth_trace_features(struct qeth_card *card)
4862 {
4863         QETH_CARD_TEXT(card, 2, "features");
4864         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4865         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4866         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4867         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4868         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4869         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4870         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4871 }
4872 EXPORT_SYMBOL_GPL(qeth_trace_features);
4873
4874 static struct ccw_device_id qeth_ids[] = {
4875         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4876                                         .driver_info = QETH_CARD_TYPE_OSD},
4877         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4878                                         .driver_info = QETH_CARD_TYPE_IQD},
4879         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4880                                         .driver_info = QETH_CARD_TYPE_OSN},
4881         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4882                                         .driver_info = QETH_CARD_TYPE_OSM},
4883         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4884                                         .driver_info = QETH_CARD_TYPE_OSX},
4885         {},
4886 };
4887 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4888
4889 static struct ccw_driver qeth_ccw_driver = {
4890         .driver = {
4891                 .owner = THIS_MODULE,
4892                 .name = "qeth",
4893         },
4894         .ids = qeth_ids,
4895         .probe = ccwgroup_probe_ccwdev,
4896         .remove = ccwgroup_remove_ccwdev,
4897 };
4898
4899 int qeth_core_hardsetup_card(struct qeth_card *card)
4900 {
4901         int retries = 3;
4902         int rc;
4903
4904         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4905         atomic_set(&card->force_alloc_skb, 0);
4906         qeth_update_from_chp_desc(card);
4907 retry:
4908         if (retries < 3)
4909                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4910                         dev_name(&card->gdev->dev));
4911         ccw_device_set_offline(CARD_DDEV(card));
4912         ccw_device_set_offline(CARD_WDEV(card));
4913         ccw_device_set_offline(CARD_RDEV(card));
4914         rc = ccw_device_set_online(CARD_RDEV(card));
4915         if (rc)
4916                 goto retriable;
4917         rc = ccw_device_set_online(CARD_WDEV(card));
4918         if (rc)
4919                 goto retriable;
4920         rc = ccw_device_set_online(CARD_DDEV(card));
4921         if (rc)
4922                 goto retriable;
4923         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4924 retriable:
4925         if (rc == -ERESTARTSYS) {
4926                 QETH_DBF_TEXT(SETUP, 2, "break1");
4927                 return rc;
4928         } else if (rc) {
4929                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4930                 if (--retries < 0)
4931                         goto out;
4932                 else
4933                         goto retry;
4934         }
4935         qeth_determine_capabilities(card);
4936         qeth_init_tokens(card);
4937         qeth_init_func_level(card);
4938         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4939         if (rc == -ERESTARTSYS) {
4940                 QETH_DBF_TEXT(SETUP, 2, "break2");
4941                 return rc;
4942         } else if (rc) {
4943                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4944                 if (--retries < 0)
4945                         goto out;
4946                 else
4947                         goto retry;
4948         }
4949         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4950         if (rc == -ERESTARTSYS) {
4951                 QETH_DBF_TEXT(SETUP, 2, "break3");
4952                 return rc;
4953         } else if (rc) {
4954                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4955                 if (--retries < 0)
4956                         goto out;
4957                 else
4958                         goto retry;
4959         }
4960         card->read_or_write_problem = 0;
4961         rc = qeth_mpc_initialize(card);
4962         if (rc) {
4963                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4964                 goto out;
4965         }
4966
4967         card->options.ipa4.supported_funcs = 0;
4968         card->options.adp.supported_funcs = 0;
4969         card->options.sbp.supported_funcs = 0;
4970         card->info.diagass_support = 0;
4971         qeth_query_ipassists(card, QETH_PROT_IPV4);
4972         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4973                 qeth_query_setadapterparms(card);
4974         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4975                 qeth_query_setdiagass(card);
4976         qeth_bridgeport_query_support(card);
4977         if (card->options.sbp.supported_funcs)
4978                 dev_info(&card->gdev->dev,
4979                 "The device represents a HiperSockets Bridge Capable Port\n");
4980         return 0;
4981 out:
4982         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4983                 "an error on the device\n");
4984         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4985                 dev_name(&card->gdev->dev), rc);
4986         return rc;
4987 }
4988 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4989
4990 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4991                 struct qdio_buffer_element *element,
4992                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4993 {
4994         struct page *page = virt_to_page(element->addr);
4995         if (*pskb == NULL) {
4996                 if (qethbuffer->rx_skb) {
4997                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4998                         *pskb = qethbuffer->rx_skb;
4999                         qethbuffer->rx_skb = NULL;
5000                 } else {
5001                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5002                         if (!(*pskb))
5003                                 return -ENOMEM;
5004                 }
5005
5006                 skb_reserve(*pskb, ETH_HLEN);
5007                 if (data_len <= QETH_RX_PULL_LEN) {
5008                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5009                                 data_len);
5010                 } else {
5011                         get_page(page);
5012                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5013                                element->addr + offset, QETH_RX_PULL_LEN);
5014                         skb_fill_page_desc(*pskb, *pfrag, page,
5015                                 offset + QETH_RX_PULL_LEN,
5016                                 data_len - QETH_RX_PULL_LEN);
5017                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5018                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5019                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5020                         (*pfrag)++;
5021                 }
5022         } else {
5023                 get_page(page);
5024                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5025                 (*pskb)->data_len += data_len;
5026                 (*pskb)->len      += data_len;
5027                 (*pskb)->truesize += data_len;
5028                 (*pfrag)++;
5029         }
5030
5031
5032         return 0;
5033 }
5034
5035 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5036                 struct qeth_qdio_buffer *qethbuffer,
5037                 struct qdio_buffer_element **__element, int *__offset,
5038                 struct qeth_hdr **hdr)
5039 {
5040         struct qdio_buffer_element *element = *__element;
5041         struct qdio_buffer *buffer = qethbuffer->buffer;
5042         int offset = *__offset;
5043         struct sk_buff *skb = NULL;
5044         int skb_len = 0;
5045         void *data_ptr;
5046         int data_len;
5047         int headroom = 0;
5048         int use_rx_sg = 0;
5049         int frag = 0;
5050
5051         /* qeth_hdr must not cross element boundaries */
5052         if (element->length < offset + sizeof(struct qeth_hdr)) {
5053                 if (qeth_is_last_sbale(element))
5054                         return NULL;
5055                 element++;
5056                 offset = 0;
5057                 if (element->length < sizeof(struct qeth_hdr))
5058                         return NULL;
5059         }
5060         *hdr = element->addr + offset;
5061
5062         offset += sizeof(struct qeth_hdr);
5063         switch ((*hdr)->hdr.l2.id) {
5064         case QETH_HEADER_TYPE_LAYER2:
5065                 skb_len = (*hdr)->hdr.l2.pkt_length;
5066                 break;
5067         case QETH_HEADER_TYPE_LAYER3:
5068                 skb_len = (*hdr)->hdr.l3.length;
5069                 headroom = ETH_HLEN;
5070                 break;
5071         case QETH_HEADER_TYPE_OSN:
5072                 skb_len = (*hdr)->hdr.osn.pdu_length;
5073                 headroom = sizeof(struct qeth_hdr);
5074                 break;
5075         default:
5076                 break;
5077         }
5078
5079         if (!skb_len)
5080                 return NULL;
5081
5082         if (((skb_len >= card->options.rx_sg_cb) &&
5083              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5084              (!atomic_read(&card->force_alloc_skb))) ||
5085             (card->options.cq == QETH_CQ_ENABLED)) {
5086                 use_rx_sg = 1;
5087         } else {
5088                 skb = dev_alloc_skb(skb_len + headroom);
5089                 if (!skb)
5090                         goto no_mem;
5091                 if (headroom)
5092                         skb_reserve(skb, headroom);
5093         }
5094
5095         data_ptr = element->addr + offset;
5096         while (skb_len) {
5097                 data_len = min(skb_len, (int)(element->length - offset));
5098                 if (data_len) {
5099                         if (use_rx_sg) {
5100                                 if (qeth_create_skb_frag(qethbuffer, element,
5101                                     &skb, offset, &frag, data_len))
5102                                         goto no_mem;
5103                         } else {
5104                                 memcpy(skb_put(skb, data_len), data_ptr,
5105                                         data_len);
5106                         }
5107                 }
5108                 skb_len -= data_len;
5109                 if (skb_len) {
5110                         if (qeth_is_last_sbale(element)) {
5111                                 QETH_CARD_TEXT(card, 4, "unexeob");
5112                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5113                                 dev_kfree_skb_any(skb);
5114                                 card->stats.rx_errors++;
5115                                 return NULL;
5116                         }
5117                         element++;
5118                         offset = 0;
5119                         data_ptr = element->addr;
5120                 } else {
5121                         offset += data_len;
5122                 }
5123         }
5124         *__element = element;
5125         *__offset = offset;
5126         if (use_rx_sg && card->options.performance_stats) {
5127                 card->perf_stats.sg_skbs_rx++;
5128                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5129         }
5130         return skb;
5131 no_mem:
5132         if (net_ratelimit()) {
5133                 QETH_CARD_TEXT(card, 2, "noskbmem");
5134         }
5135         card->stats.rx_dropped++;
5136         return NULL;
5137 }
5138 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5139
5140 static void qeth_unregister_dbf_views(void)
5141 {
5142         int x;
5143         for (x = 0; x < QETH_DBF_INFOS; x++) {
5144                 debug_unregister(qeth_dbf[x].id);
5145                 qeth_dbf[x].id = NULL;
5146         }
5147 }
5148
5149 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5150 {
5151         char dbf_txt_buf[32];
5152         va_list args;
5153
5154         if (!debug_level_enabled(id, level))
5155                 return;
5156         va_start(args, fmt);
5157         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5158         va_end(args);
5159         debug_text_event(id, level, dbf_txt_buf);
5160 }
5161 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5162
5163 static int qeth_register_dbf_views(void)
5164 {
5165         int ret;
5166         int x;
5167
5168         for (x = 0; x < QETH_DBF_INFOS; x++) {
5169                 /* register the areas */
5170                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5171                                                 qeth_dbf[x].pages,
5172                                                 qeth_dbf[x].areas,
5173                                                 qeth_dbf[x].len);
5174                 if (qeth_dbf[x].id == NULL) {
5175                         qeth_unregister_dbf_views();
5176                         return -ENOMEM;
5177                 }
5178
5179                 /* register a view */
5180                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5181                 if (ret) {
5182                         qeth_unregister_dbf_views();
5183                         return ret;
5184                 }
5185
5186                 /* set a passing level */
5187                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5188         }
5189
5190         return 0;
5191 }
5192
5193 int qeth_core_load_discipline(struct qeth_card *card,
5194                 enum qeth_discipline_id discipline)
5195 {
5196         int rc = 0;
5197         mutex_lock(&qeth_mod_mutex);
5198         switch (discipline) {
5199         case QETH_DISCIPLINE_LAYER3:
5200                 card->discipline = try_then_request_module(
5201                         symbol_get(qeth_l3_discipline), "qeth_l3");
5202                 break;
5203         case QETH_DISCIPLINE_LAYER2:
5204                 card->discipline = try_then_request_module(
5205                         symbol_get(qeth_l2_discipline), "qeth_l2");
5206                 break;
5207         }
5208         if (!card->discipline) {
5209                 dev_err(&card->gdev->dev, "There is no kernel module to "
5210                         "support discipline %d\n", discipline);
5211                 rc = -EINVAL;
5212         }
5213         mutex_unlock(&qeth_mod_mutex);
5214         return rc;
5215 }
5216
5217 void qeth_core_free_discipline(struct qeth_card *card)
5218 {
5219         if (card->options.layer2)
5220                 symbol_put(qeth_l2_discipline);
5221         else
5222                 symbol_put(qeth_l3_discipline);
5223         card->discipline = NULL;
5224 }
5225
5226 static const struct device_type qeth_generic_devtype = {
5227         .name = "qeth_generic",
5228         .groups = qeth_generic_attr_groups,
5229 };
5230 static const struct device_type qeth_osn_devtype = {
5231         .name = "qeth_osn",
5232         .groups = qeth_osn_attr_groups,
5233 };
5234
5235 #define DBF_NAME_LEN    20
5236
5237 struct qeth_dbf_entry {
5238         char dbf_name[DBF_NAME_LEN];
5239         debug_info_t *dbf_info;
5240         struct list_head dbf_list;
5241 };
5242
5243 static LIST_HEAD(qeth_dbf_list);
5244 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5245
5246 static debug_info_t *qeth_get_dbf_entry(char *name)
5247 {
5248         struct qeth_dbf_entry *entry;
5249         debug_info_t *rc = NULL;
5250
5251         mutex_lock(&qeth_dbf_list_mutex);
5252         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5253                 if (strcmp(entry->dbf_name, name) == 0) {
5254                         rc = entry->dbf_info;
5255                         break;
5256                 }
5257         }
5258         mutex_unlock(&qeth_dbf_list_mutex);
5259         return rc;
5260 }
5261
5262 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5263 {
5264         struct qeth_dbf_entry *new_entry;
5265
5266         card->debug = debug_register(name, 2, 1, 8);
5267         if (!card->debug) {
5268                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5269                 goto err;
5270         }
5271         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5272                 goto err_dbg;
5273         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5274         if (!new_entry)
5275                 goto err_dbg;
5276         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5277         new_entry->dbf_info = card->debug;
5278         mutex_lock(&qeth_dbf_list_mutex);
5279         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5280         mutex_unlock(&qeth_dbf_list_mutex);
5281
5282         return 0;
5283
5284 err_dbg:
5285         debug_unregister(card->debug);
5286 err:
5287         return -ENOMEM;
5288 }
5289
5290 static void qeth_clear_dbf_list(void)
5291 {
5292         struct qeth_dbf_entry *entry, *tmp;
5293
5294         mutex_lock(&qeth_dbf_list_mutex);
5295         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5296                 list_del(&entry->dbf_list);
5297                 debug_unregister(entry->dbf_info);
5298                 kfree(entry);
5299         }
5300         mutex_unlock(&qeth_dbf_list_mutex);
5301 }
5302
5303 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5304 {
5305         struct qeth_card *card;
5306         struct device *dev;
5307         int rc;
5308         unsigned long flags;
5309         char dbf_name[DBF_NAME_LEN];
5310
5311         QETH_DBF_TEXT(SETUP, 2, "probedev");
5312
5313         dev = &gdev->dev;
5314         if (!get_device(dev))
5315                 return -ENODEV;
5316
5317         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5318
5319         card = qeth_alloc_card();
5320         if (!card) {
5321                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5322                 rc = -ENOMEM;
5323                 goto err_dev;
5324         }
5325
5326         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5327                 dev_name(&gdev->dev));
5328         card->debug = qeth_get_dbf_entry(dbf_name);
5329         if (!card->debug) {
5330                 rc = qeth_add_dbf_entry(card, dbf_name);
5331                 if (rc)
5332                         goto err_card;
5333         }
5334
5335         card->read.ccwdev  = gdev->cdev[0];
5336         card->write.ccwdev = gdev->cdev[1];
5337         card->data.ccwdev  = gdev->cdev[2];
5338         dev_set_drvdata(&gdev->dev, card);
5339         card->gdev = gdev;
5340         gdev->cdev[0]->handler = qeth_irq;
5341         gdev->cdev[1]->handler = qeth_irq;
5342         gdev->cdev[2]->handler = qeth_irq;
5343
5344         rc = qeth_determine_card_type(card);
5345         if (rc) {
5346                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5347                 goto err_card;
5348         }
5349         rc = qeth_setup_card(card);
5350         if (rc) {
5351                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5352                 goto err_card;
5353         }
5354
5355         if (card->info.type == QETH_CARD_TYPE_OSN)
5356                 gdev->dev.type = &qeth_osn_devtype;
5357         else
5358                 gdev->dev.type = &qeth_generic_devtype;
5359
5360         switch (card->info.type) {
5361         case QETH_CARD_TYPE_OSN:
5362         case QETH_CARD_TYPE_OSM:
5363                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5364                 if (rc)
5365                         goto err_card;
5366                 rc = card->discipline->setup(card->gdev);
5367                 if (rc)
5368                         goto err_disc;
5369         case QETH_CARD_TYPE_OSD:
5370         case QETH_CARD_TYPE_OSX:
5371         default:
5372                 break;
5373         }
5374
5375         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5376         list_add_tail(&card->list, &qeth_core_card_list.list);
5377         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5378
5379         qeth_determine_capabilities(card);
5380         return 0;
5381
5382 err_disc:
5383         qeth_core_free_discipline(card);
5384 err_card:
5385         qeth_core_free_card(card);
5386 err_dev:
5387         put_device(dev);
5388         return rc;
5389 }
5390
5391 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5392 {
5393         unsigned long flags;
5394         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5395
5396         QETH_DBF_TEXT(SETUP, 2, "removedv");
5397
5398         if (card->discipline) {
5399                 card->discipline->remove(gdev);
5400                 qeth_core_free_discipline(card);
5401         }
5402
5403         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5404         list_del(&card->list);
5405         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5406         qeth_core_free_card(card);
5407         dev_set_drvdata(&gdev->dev, NULL);
5408         put_device(&gdev->dev);
5409         return;
5410 }
5411
5412 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5413 {
5414         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5415         int rc = 0;
5416         int def_discipline;
5417
5418         if (!card->discipline) {
5419                 if (card->info.type == QETH_CARD_TYPE_IQD)
5420                         def_discipline = QETH_DISCIPLINE_LAYER3;
5421                 else
5422                         def_discipline = QETH_DISCIPLINE_LAYER2;
5423                 rc = qeth_core_load_discipline(card, def_discipline);
5424                 if (rc)
5425                         goto err;
5426                 rc = card->discipline->setup(card->gdev);
5427                 if (rc)
5428                         goto err;
5429         }
5430         rc = card->discipline->set_online(gdev);
5431 err:
5432         return rc;
5433 }
5434
5435 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5436 {
5437         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5438         return card->discipline->set_offline(gdev);
5439 }
5440
5441 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5442 {
5443         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5444         if (card->discipline && card->discipline->shutdown)
5445                 card->discipline->shutdown(gdev);
5446 }
5447
5448 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5449 {
5450         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5451         if (card->discipline && card->discipline->prepare)
5452                 return card->discipline->prepare(gdev);
5453         return 0;
5454 }
5455
5456 static void qeth_core_complete(struct ccwgroup_device *gdev)
5457 {
5458         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5459         if (card->discipline && card->discipline->complete)
5460                 card->discipline->complete(gdev);
5461 }
5462
5463 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5464 {
5465         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5466         if (card->discipline && card->discipline->freeze)
5467                 return card->discipline->freeze(gdev);
5468         return 0;
5469 }
5470
5471 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5472 {
5473         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5474         if (card->discipline && card->discipline->thaw)
5475                 return card->discipline->thaw(gdev);
5476         return 0;
5477 }
5478
5479 static int qeth_core_restore(struct ccwgroup_device *gdev)
5480 {
5481         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5482         if (card->discipline && card->discipline->restore)
5483                 return card->discipline->restore(gdev);
5484         return 0;
5485 }
5486
5487 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5488         .driver = {
5489                 .owner = THIS_MODULE,
5490                 .name = "qeth",
5491         },
5492         .setup = qeth_core_probe_device,
5493         .remove = qeth_core_remove_device,
5494         .set_online = qeth_core_set_online,
5495         .set_offline = qeth_core_set_offline,
5496         .shutdown = qeth_core_shutdown,
5497         .prepare = qeth_core_prepare,
5498         .complete = qeth_core_complete,
5499         .freeze = qeth_core_freeze,
5500         .thaw = qeth_core_thaw,
5501         .restore = qeth_core_restore,
5502 };
5503
5504 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5505                                             const char *buf, size_t count)
5506 {
5507         int err;
5508
5509         err = ccwgroup_create_dev(qeth_core_root_dev,
5510                                   &qeth_core_ccwgroup_driver, 3, buf);
5511
5512         return err ? err : count;
5513 }
5514 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5515
5516 static struct attribute *qeth_drv_attrs[] = {
5517         &driver_attr_group.attr,
5518         NULL,
5519 };
5520 static struct attribute_group qeth_drv_attr_group = {
5521         .attrs = qeth_drv_attrs,
5522 };
5523 static const struct attribute_group *qeth_drv_attr_groups[] = {
5524         &qeth_drv_attr_group,
5525         NULL,
5526 };
5527
5528 static struct {
5529         const char str[ETH_GSTRING_LEN];
5530 } qeth_ethtool_stats_keys[] = {
5531 /*  0 */{"rx skbs"},
5532         {"rx buffers"},
5533         {"tx skbs"},
5534         {"tx buffers"},
5535         {"tx skbs no packing"},
5536         {"tx buffers no packing"},
5537         {"tx skbs packing"},
5538         {"tx buffers packing"},
5539         {"tx sg skbs"},
5540         {"tx sg frags"},
5541 /* 10 */{"rx sg skbs"},
5542         {"rx sg frags"},
5543         {"rx sg page allocs"},
5544         {"tx large kbytes"},
5545         {"tx large count"},
5546         {"tx pk state ch n->p"},
5547         {"tx pk state ch p->n"},
5548         {"tx pk watermark low"},
5549         {"tx pk watermark high"},
5550         {"queue 0 buffer usage"},
5551 /* 20 */{"queue 1 buffer usage"},
5552         {"queue 2 buffer usage"},
5553         {"queue 3 buffer usage"},
5554         {"rx poll time"},
5555         {"rx poll count"},
5556         {"rx do_QDIO time"},
5557         {"rx do_QDIO count"},
5558         {"tx handler time"},
5559         {"tx handler count"},
5560         {"tx time"},
5561 /* 30 */{"tx count"},
5562         {"tx do_QDIO time"},
5563         {"tx do_QDIO count"},
5564         {"tx csum"},
5565         {"tx lin"},
5566         {"cq handler count"},
5567         {"cq handler time"}
5568 };
5569
5570 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5571 {
5572         switch (stringset) {
5573         case ETH_SS_STATS:
5574                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5575         default:
5576                 return -EINVAL;
5577         }
5578 }
5579 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5580
5581 void qeth_core_get_ethtool_stats(struct net_device *dev,
5582                 struct ethtool_stats *stats, u64 *data)
5583 {
5584         struct qeth_card *card = dev->ml_priv;
5585         data[0] = card->stats.rx_packets -
5586                                 card->perf_stats.initial_rx_packets;
5587         data[1] = card->perf_stats.bufs_rec;
5588         data[2] = card->stats.tx_packets -
5589                                 card->perf_stats.initial_tx_packets;
5590         data[3] = card->perf_stats.bufs_sent;
5591         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5592                         - card->perf_stats.skbs_sent_pack;
5593         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5594         data[6] = card->perf_stats.skbs_sent_pack;
5595         data[7] = card->perf_stats.bufs_sent_pack;
5596         data[8] = card->perf_stats.sg_skbs_sent;
5597         data[9] = card->perf_stats.sg_frags_sent;
5598         data[10] = card->perf_stats.sg_skbs_rx;
5599         data[11] = card->perf_stats.sg_frags_rx;
5600         data[12] = card->perf_stats.sg_alloc_page_rx;
5601         data[13] = (card->perf_stats.large_send_bytes >> 10);
5602         data[14] = card->perf_stats.large_send_cnt;
5603         data[15] = card->perf_stats.sc_dp_p;
5604         data[16] = card->perf_stats.sc_p_dp;
5605         data[17] = QETH_LOW_WATERMARK_PACK;
5606         data[18] = QETH_HIGH_WATERMARK_PACK;
5607         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5608         data[20] = (card->qdio.no_out_queues > 1) ?
5609                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5610         data[21] = (card->qdio.no_out_queues > 2) ?
5611                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5612         data[22] = (card->qdio.no_out_queues > 3) ?
5613                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5614         data[23] = card->perf_stats.inbound_time;
5615         data[24] = card->perf_stats.inbound_cnt;
5616         data[25] = card->perf_stats.inbound_do_qdio_time;
5617         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5618         data[27] = card->perf_stats.outbound_handler_time;
5619         data[28] = card->perf_stats.outbound_handler_cnt;
5620         data[29] = card->perf_stats.outbound_time;
5621         data[30] = card->perf_stats.outbound_cnt;
5622         data[31] = card->perf_stats.outbound_do_qdio_time;
5623         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5624         data[33] = card->perf_stats.tx_csum;
5625         data[34] = card->perf_stats.tx_lin;
5626         data[35] = card->perf_stats.cq_cnt;
5627         data[36] = card->perf_stats.cq_time;
5628 }
5629 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5630
5631 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5632 {
5633         switch (stringset) {
5634         case ETH_SS_STATS:
5635                 memcpy(data, &qeth_ethtool_stats_keys,
5636                         sizeof(qeth_ethtool_stats_keys));
5637                 break;
5638         default:
5639                 WARN_ON(1);
5640                 break;
5641         }
5642 }
5643 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5644
5645 void qeth_core_get_drvinfo(struct net_device *dev,
5646                 struct ethtool_drvinfo *info)
5647 {
5648         struct qeth_card *card = dev->ml_priv;
5649
5650         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5651                 sizeof(info->driver));
5652         strlcpy(info->version, "1.0", sizeof(info->version));
5653         strlcpy(info->fw_version, card->info.mcl_level,
5654                 sizeof(info->fw_version));
5655         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5656                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5657 }
5658 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5659
5660 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5661 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5662 /* Always advertize and support all speeds up to specified, and only one     */
5663 /* specified port type.                                                      */
5664 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5665                                 int maxspeed, int porttype)
5666 {
5667         int port_sup, port_adv, spd_sup, spd_adv;
5668
5669         switch (porttype) {
5670         case PORT_TP:
5671                 port_sup = SUPPORTED_TP;
5672                 port_adv = ADVERTISED_TP;
5673                 break;
5674         case PORT_FIBRE:
5675                 port_sup = SUPPORTED_FIBRE;
5676                 port_adv = ADVERTISED_FIBRE;
5677                 break;
5678         default:
5679                 port_sup = SUPPORTED_TP;
5680                 port_adv = ADVERTISED_TP;
5681                 WARN_ON_ONCE(1);
5682         }
5683
5684         /* "Fallthrough" case'es ordered from high to low result in setting  */
5685         /* flags cumulatively, starting from the specified speed and down to */
5686         /* the lowest possible.                                              */
5687         spd_sup = 0;
5688         spd_adv = 0;
5689         switch (maxspeed) {
5690         case SPEED_10000:
5691                 spd_sup |= SUPPORTED_10000baseT_Full;
5692                 spd_adv |= ADVERTISED_10000baseT_Full;
5693         case SPEED_1000:
5694                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5695                 spd_adv |= ADVERTISED_1000baseT_Half |
5696                                                 ADVERTISED_1000baseT_Full;
5697         case SPEED_100:
5698                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5699                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5700         case SPEED_10:
5701                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5702                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5703         break;
5704         default:
5705                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5706                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5707                 WARN_ON_ONCE(1);
5708         }
5709         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5710         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5711 }
5712
5713 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5714                                         struct ethtool_cmd *ecmd)
5715 {
5716         struct qeth_card *card = netdev->ml_priv;
5717         enum qeth_link_types link_type;
5718         struct carrier_info carrier_info;
5719
5720         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5721                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5722         else
5723                 link_type = card->info.link_type;
5724
5725         ecmd->transceiver = XCVR_INTERNAL;
5726         ecmd->duplex = DUPLEX_FULL;
5727         ecmd->autoneg = AUTONEG_ENABLE;
5728
5729         switch (link_type) {
5730         case QETH_LINK_TYPE_FAST_ETH:
5731         case QETH_LINK_TYPE_LANE_ETH100:
5732                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5733                 ecmd->speed = SPEED_100;
5734                 ecmd->port = PORT_TP;
5735                 break;
5736
5737         case QETH_LINK_TYPE_GBIT_ETH:
5738         case QETH_LINK_TYPE_LANE_ETH1000:
5739                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5740                 ecmd->speed = SPEED_1000;
5741                 ecmd->port = PORT_FIBRE;
5742                 break;
5743
5744         case QETH_LINK_TYPE_10GBIT_ETH:
5745                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5746                 ecmd->speed = SPEED_10000;
5747                 ecmd->port = PORT_FIBRE;
5748                 break;
5749
5750         default:
5751                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5752                 ecmd->speed = SPEED_10;
5753                 ecmd->port = PORT_TP;
5754         }
5755
5756         /* Check if we can obtain more accurate information.     */
5757         /* If QUERY_CARD_INFO command is not supported or fails, */
5758         /* just return the heuristics that was filled above.     */
5759         if (qeth_query_card_info(card, &carrier_info) != 0)
5760                 return 0;
5761
5762         netdev_dbg(netdev,
5763         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5764                         carrier_info.card_type,
5765                         carrier_info.port_mode,
5766                         carrier_info.port_speed);
5767
5768         /* Update attributes for which we've obtained more authoritative */
5769         /* information, leave the rest the way they where filled above.  */
5770         switch (carrier_info.card_type) {
5771         case CARD_INFO_TYPE_1G_COPPER_A:
5772         case CARD_INFO_TYPE_1G_COPPER_B:
5773                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5774                 ecmd->port = PORT_TP;
5775                 break;
5776         case CARD_INFO_TYPE_1G_FIBRE_A:
5777         case CARD_INFO_TYPE_1G_FIBRE_B:
5778                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5779                 ecmd->port = PORT_FIBRE;
5780                 break;
5781         case CARD_INFO_TYPE_10G_FIBRE_A:
5782         case CARD_INFO_TYPE_10G_FIBRE_B:
5783                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5784                 ecmd->port = PORT_FIBRE;
5785                 break;
5786         }
5787
5788         switch (carrier_info.port_mode) {
5789         case CARD_INFO_PORTM_FULLDUPLEX:
5790                 ecmd->duplex = DUPLEX_FULL;
5791                 break;
5792         case CARD_INFO_PORTM_HALFDUPLEX:
5793                 ecmd->duplex = DUPLEX_HALF;
5794                 break;
5795         }
5796
5797         switch (carrier_info.port_speed) {
5798         case CARD_INFO_PORTS_10M:
5799                 ecmd->speed = SPEED_10;
5800                 break;
5801         case CARD_INFO_PORTS_100M:
5802                 ecmd->speed = SPEED_100;
5803                 break;
5804         case CARD_INFO_PORTS_1G:
5805                 ecmd->speed = SPEED_1000;
5806                 break;
5807         case CARD_INFO_PORTS_10G:
5808                 ecmd->speed = SPEED_10000;
5809                 break;
5810         }
5811
5812         return 0;
5813 }
5814 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5815
5816 static int __init qeth_core_init(void)
5817 {
5818         int rc;
5819
5820         pr_info("loading core functions\n");
5821         INIT_LIST_HEAD(&qeth_core_card_list.list);
5822         INIT_LIST_HEAD(&qeth_dbf_list);
5823         rwlock_init(&qeth_core_card_list.rwlock);
5824         mutex_init(&qeth_mod_mutex);
5825
5826         qeth_wq = create_singlethread_workqueue("qeth_wq");
5827
5828         rc = qeth_register_dbf_views();
5829         if (rc)
5830                 goto out_err;
5831         qeth_core_root_dev = root_device_register("qeth");
5832         rc = PTR_RET(qeth_core_root_dev);
5833         if (rc)
5834                 goto register_err;
5835         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5836                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5837         if (!qeth_core_header_cache) {
5838                 rc = -ENOMEM;
5839                 goto slab_err;
5840         }
5841         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5842                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5843         if (!qeth_qdio_outbuf_cache) {
5844                 rc = -ENOMEM;
5845                 goto cqslab_err;
5846         }
5847         rc = ccw_driver_register(&qeth_ccw_driver);
5848         if (rc)
5849                 goto ccw_err;
5850         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5851         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5852         if (rc)
5853                 goto ccwgroup_err;
5854
5855         return 0;
5856
5857 ccwgroup_err:
5858         ccw_driver_unregister(&qeth_ccw_driver);
5859 ccw_err:
5860         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5861 cqslab_err:
5862         kmem_cache_destroy(qeth_core_header_cache);
5863 slab_err:
5864         root_device_unregister(qeth_core_root_dev);
5865 register_err:
5866         qeth_unregister_dbf_views();
5867 out_err:
5868         pr_err("Initializing the qeth device driver failed\n");
5869         return rc;
5870 }
5871
5872 static void __exit qeth_core_exit(void)
5873 {
5874         qeth_clear_dbf_list();
5875         destroy_workqueue(qeth_wq);
5876         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5877         ccw_driver_unregister(&qeth_ccw_driver);
5878         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5879         kmem_cache_destroy(qeth_core_header_cache);
5880         root_device_unregister(qeth_core_root_dev);
5881         qeth_unregister_dbf_views();
5882         pr_info("core functions removed\n");
5883 }
5884
5885 module_init(qeth_core_init);
5886 module_exit(qeth_core_exit);
5887 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5888 MODULE_DESCRIPTION("qeth core functions");
5889 MODULE_LICENSE("GPL");