drivers/s390/net/qeth_core_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/ip.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21 #include <linux/slab.h>
  22 #include <net/iucv/af_iucv.h>
  23 #include <net/dsfield.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/chpid.h>
  27 #include <asm/io.h>
  28 #include <asm/sysinfo.h>
  29 #include <asm/compat.h>
  30
  31 #include "qeth_core.h"
  32
  33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  34         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  35         /*                   N  P  A    M  L  V                      H  */
  36         [QETH_DBF_SETUP] = {"qeth_setup",
  37                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  39                             &debug_sprintf_view, NULL},
  40         [QETH_DBF_CTRL]  = {"qeth_control",
  41                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  42 };
  43 EXPORT_SYMBOL_GPL(qeth_dbf);
  44
  45 struct qeth_card_list_struct qeth_core_card_list;
  46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  47 struct kmem_cache *qeth_core_header_cache;
  48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  49 static struct kmem_cache *qeth_qdio_outbuf_cache;
  50
  51 static struct device *qeth_core_root_dev;
  52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  53 static struct lock_class_key qdio_out_skb_queue_key;
  54 static struct mutex qeth_mod_mutex;
  55
  56 static void qeth_send_control_data_cb(struct qeth_channel *,
  57                         struct qeth_cmd_buffer *);
  58 static int qeth_issue_next_read(struct qeth_card *);
  59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  61 static void qeth_free_buffer_pool(struct qeth_card *);
  62 static int qeth_qdio_establish(struct qeth_card *);
  63 static void qeth_free_qdio_buffers(struct qeth_card *);
  64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  65                 struct qeth_qdio_out_buffer *buf,
  66                 enum iucv_tx_notify notification);
  67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  69                 struct qeth_qdio_out_buffer *buf,
  70                 enum qeth_qdio_buffer_states newbufstate);
  71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  72
  73 struct workqueue_struct *qeth_wq;
  74 EXPORT_SYMBOL_GPL(qeth_wq);
  75
  76 int qeth_card_hw_is_reachable(struct qeth_card *card)
  77 {
  78         return (card->state == CARD_STATE_SOFTSETUP) ||
  79                 (card->state == CARD_STATE_UP);
  80 }
  81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  82
  83 static void qeth_close_dev_handler(struct work_struct *work)
  84 {
  85         struct qeth_card *card;
  86
  87         card = container_of(work, struct qeth_card, close_dev_work);
  88         QETH_CARD_TEXT(card, 2, "cldevhdl");
  89         rtnl_lock();
  90         dev_close(card->dev);
  91         rtnl_unlock();
  92         ccwgroup_set_offline(card->gdev);
  93 }
  94
  95 void qeth_close_dev(struct qeth_card *card)
  96 {
  97         QETH_CARD_TEXT(card, 2, "cldevsubm");
  98         queue_work(qeth_wq, &card->close_dev_work);
  99 }
 100 EXPORT_SYMBOL_GPL(qeth_close_dev);
 101
 102 static inline const char *qeth_get_cardname(struct qeth_card *card)
 103 {
 104         if (card->info.guestlan) {
 105                 switch (card->info.type) {
 106                 case QETH_CARD_TYPE_OSD:
 107                         return " Virtual NIC QDIO";
 108                 case QETH_CARD_TYPE_IQD:
 109                         return " Virtual NIC Hiper";
 110                 case QETH_CARD_TYPE_OSM:
 111                         return " Virtual NIC QDIO - OSM";
 112                 case QETH_CARD_TYPE_OSX:
 113                         return " Virtual NIC QDIO - OSX";
 114                 default:
 115                         return " unknown";
 116                 }
 117         } else {
 118                 switch (card->info.type) {
 119                 case QETH_CARD_TYPE_OSD:
 120                         return " OSD Express";
 121                 case QETH_CARD_TYPE_IQD:
 122                         return " HiperSockets";
 123                 case QETH_CARD_TYPE_OSN:
 124                         return " OSN QDIO";
 125                 case QETH_CARD_TYPE_OSM:
 126                         return " OSM QDIO";
 127                 case QETH_CARD_TYPE_OSX:
 128                         return " OSX QDIO";
 129                 default:
 130                         return " unknown";
 131                 }
 132         }
 133         return " n/a";
 134 }
 135
 136 /* max length to be returned: 14 */
 137 const char *qeth_get_cardname_short(struct qeth_card *card)
 138 {
 139         if (card->info.guestlan) {
 140                 switch (card->info.type) {
 141                 case QETH_CARD_TYPE_OSD:
 142                         return "Virt.NIC QDIO";
 143                 case QETH_CARD_TYPE_IQD:
 144                         return "Virt.NIC Hiper";
 145                 case QETH_CARD_TYPE_OSM:
 146                         return "Virt.NIC OSM";
 147                 case QETH_CARD_TYPE_OSX:
 148                         return "Virt.NIC OSX";
 149                 default:
 150                         return "unknown";
 151                 }
 152         } else {
 153                 switch (card->info.type) {
 154                 case QETH_CARD_TYPE_OSD:
 155                         switch (card->info.link_type) {
 156                         case QETH_LINK_TYPE_FAST_ETH:
 157                                 return "OSD_100";
 158                         case QETH_LINK_TYPE_HSTR:
 159                                 return "HSTR";
 160                         case QETH_LINK_TYPE_GBIT_ETH:
 161                                 return "OSD_1000";
 162                         case QETH_LINK_TYPE_10GBIT_ETH:
 163                                 return "OSD_10GIG";
 164                         case QETH_LINK_TYPE_LANE_ETH100:
 165                                 return "OSD_FE_LANE";
 166                         case QETH_LINK_TYPE_LANE_TR:
 167                                 return "OSD_TR_LANE";
 168                         case QETH_LINK_TYPE_LANE_ETH1000:
 169                                 return "OSD_GbE_LANE";
 170                         case QETH_LINK_TYPE_LANE:
 171                                 return "OSD_ATM_LANE";
 172                         default:
 173                                 return "OSD_Express";
 174                         }
 175                 case QETH_CARD_TYPE_IQD:
 176                         return "HiperSockets";
 177                 case QETH_CARD_TYPE_OSN:
 178                         return "OSN";
 179                 case QETH_CARD_TYPE_OSM:
 180                         return "OSM_1000";
 181                 case QETH_CARD_TYPE_OSX:
 182                         return "OSX_10GIG";
 183                 default:
 184                         return "unknown";
 185                 }
 186         }
 187         return "n/a";
 188 }
 189
 190 void qeth_set_recovery_task(struct qeth_card *card)
 191 {
 192         card->recovery_task = current;
 193 }
 194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 195
 196 void qeth_clear_recovery_task(struct qeth_card *card)
 197 {
 198         card->recovery_task = NULL;
 199 }
 200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 201
 202 static bool qeth_is_recovery_task(const struct qeth_card *card)
 203 {
 204         return card->recovery_task == current;
 205 }
 206
 207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 208                          int clear_start_mask)
 209 {
 210         unsigned long flags;
 211
 212         spin_lock_irqsave(&card->thread_mask_lock, flags);
 213         card->thread_allowed_mask = threads;
 214         if (clear_start_mask)
 215                 card->thread_start_mask &= threads;
 216         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 217         wake_up(&card->wait_q);
 218 }
 219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 220
 221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 222 {
 223         unsigned long flags;
 224         int rc = 0;
 225
 226         spin_lock_irqsave(&card->thread_mask_lock, flags);
 227         rc = (card->thread_running_mask & threads);
 228         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 229         return rc;
 230 }
 231 EXPORT_SYMBOL_GPL(qeth_threads_running);
 232
 233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 234 {
 235         if (qeth_is_recovery_task(card))
 236                 return 0;
 237         return wait_event_interruptible(card->wait_q,
 238                         qeth_threads_running(card, threads) == 0);
 239 }
 240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 241
 242 void qeth_clear_working_pool_list(struct qeth_card *card)
 243 {
 244         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 245
 246         QETH_CARD_TEXT(card, 5, "clwrklst");
 247         list_for_each_entry_safe(pool_entry, tmp,
 248                             &card->qdio.in_buf_pool.entry_list, list){
 249                         list_del(&pool_entry->list);
 250         }
 251 }
 252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 253
 254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 255 {
 256         struct qeth_buffer_pool_entry *pool_entry;
 257         void *ptr;
 258         int i, j;
 259
 260         QETH_CARD_TEXT(card, 5, "alocpool");
 261         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 262                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 263                 if (!pool_entry) {
 264                         qeth_free_buffer_pool(card);
 265                         return -ENOMEM;
 266                 }
 267                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 268                         ptr = (void *) __get_free_page(GFP_KERNEL);
 269                         if (!ptr) {
 270                                 while (j > 0)
 271                                         free_page((unsigned long)
 272                                                   pool_entry->elements[--j]);
 273                                 kfree(pool_entry);
 274                                 qeth_free_buffer_pool(card);
 275                                 return -ENOMEM;
 276                         }
 277                         pool_entry->elements[j] = ptr;
 278                 }
 279                 list_add(&pool_entry->init_list,
 280                          &card->qdio.init_pool.entry_list);
 281         }
 282         return 0;
 283 }
 284
 285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 286 {
 287         QETH_CARD_TEXT(card, 2, "realcbp");
 288
 289         if ((card->state != CARD_STATE_DOWN) &&
 290             (card->state != CARD_STATE_RECOVER))
 291                 return -EPERM;
 292
 293         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 294         qeth_clear_working_pool_list(card);
 295         qeth_free_buffer_pool(card);
 296         card->qdio.in_buf_pool.buf_count = bufcnt;
 297         card->qdio.init_pool.buf_count = bufcnt;
 298         return qeth_alloc_buffer_pool(card);
 299 }
 300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 301
 302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 303 {
 304         if (!q)
 305                 return;
 306
 307         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 308         kfree(q);
 309 }
 310
 311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 312 {
 313         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 314         int i;
 315
 316         if (!q)
 317                 return NULL;
 318
 319         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 320                 kfree(q);
 321                 return NULL;
 322         }
 323
 324         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 325                 q->bufs[i].buffer = q->qdio_bufs[i];
 326
 327         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 328         return q;
 329 }
 330
 331 static inline int qeth_cq_init(struct qeth_card *card)
 332 {
 333         int rc;
 334
 335         if (card->options.cq == QETH_CQ_ENABLED) {
 336                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 337                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 338                                    QDIO_MAX_BUFFERS_PER_Q);
 339                 card->qdio.c_q->next_buf_to_init = 127;
 340                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 341                              card->qdio.no_in_queues - 1, 0,
 342                              127);
 343                 if (rc) {
 344                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 345                         goto out;
 346                 }
 347         }
 348         rc = 0;
 349 out:
 350         return rc;
 351 }
 352
 353 static inline int qeth_alloc_cq(struct qeth_card *card)
 354 {
 355         int rc;
 356
 357         if (card->options.cq == QETH_CQ_ENABLED) {
 358                 int i;
 359                 struct qdio_outbuf_state *outbuf_states;
 360
 361                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 362                 card->qdio.c_q = qeth_alloc_qdio_queue();
 363                 if (!card->qdio.c_q) {
 364                         rc = -1;
 365                         goto kmsg_out;
 366                 }
 367                 card->qdio.no_in_queues = 2;
 368                 card->qdio.out_bufstates =
 369                         kzalloc(card->qdio.no_out_queues *
 370                                 QDIO_MAX_BUFFERS_PER_Q *
 371                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 372                 outbuf_states = card->qdio.out_bufstates;
 373                 if (outbuf_states == NULL) {
 374                         rc = -1;
 375                         goto free_cq_out;
 376                 }
 377                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 378                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 379                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 380                 }
 381         } else {
 382                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 383                 card->qdio.c_q = NULL;
 384                 card->qdio.no_in_queues = 1;
 385         }
 386         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 387         rc = 0;
 388 out:
 389         return rc;
 390 free_cq_out:
 391         qeth_free_qdio_queue(card->qdio.c_q);
 392         card->qdio.c_q = NULL;
 393 kmsg_out:
 394         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 395         goto out;
 396 }
 397
 398 static inline void qeth_free_cq(struct qeth_card *card)
 399 {
 400         if (card->qdio.c_q) {
 401                 --card->qdio.no_in_queues;
 402                 qeth_free_qdio_queue(card->qdio.c_q);
 403                 card->qdio.c_q = NULL;
 404         }
 405         kfree(card->qdio.out_bufstates);
 406         card->qdio.out_bufstates = NULL;
 407 }
 408
 409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 410         int delayed) {
 411         enum iucv_tx_notify n;
 412
 413         switch (sbalf15) {
 414         case 0:
 415                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 416                 break;
 417         case 4:
 418         case 16:
 419         case 17:
 420         case 18:
 421                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 422                         TX_NOTIFY_UNREACHABLE;
 423                 break;
 424         default:
 425                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 426                         TX_NOTIFY_GENERALERROR;
 427                 break;
 428         }
 429
 430         return n;
 431 }
 432
 433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 434         int bidx, int forced_cleanup)
 435 {
 436         if (q->card->options.cq != QETH_CQ_ENABLED)
 437                 return;
 438
 439         if (q->bufs[bidx]->next_pending != NULL) {
 440                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 441                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 442
 443                 while (c) {
 444                         if (forced_cleanup ||
 445                             atomic_read(&c->state) ==
 446                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 447                                 struct qeth_qdio_out_buffer *f = c;
 448                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 449                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 450                                 /* release here to avoid interleaving between
 451                                    outbound tasklet and inbound tasklet
 452                                    regarding notifications and lifecycle */
 453                                 qeth_release_skbs(c);
 454
 455                                 c = f->next_pending;
 456                                 WARN_ON_ONCE(head->next_pending != f);
 457                                 head->next_pending = c;
 458                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 459                         } else {
 460                                 head = c;
 461                                 c = c->next_pending;
 462                         }
 463
 464                 }
 465         }
 466         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 467                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 468                 /* for recovery situations */
 469                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 470                 qeth_init_qdio_out_buf(q, bidx);
 471                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 472         }
 473 }
 474
 475
 476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 477                 unsigned long phys_aob_addr) {
 478         struct qaob *aob;
 479         struct qeth_qdio_out_buffer *buffer;
 480         enum iucv_tx_notify notification;
 481
 482         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 483         QETH_CARD_TEXT(card, 5, "haob");
 484         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 485         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 486         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 487
 488         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 489                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 490                 notification = TX_NOTIFY_OK;
 491         } else {
 492                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 493                                                         QETH_QDIO_BUF_PENDING);
 494                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 495                 notification = TX_NOTIFY_DELAYED_OK;
 496         }
 497
 498         if (aob->aorc != 0)  {
 499                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 500                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 501         }
 502         qeth_notify_skbs(buffer->q, buffer, notification);
 503
 504         buffer->aob = NULL;
 505         qeth_clear_output_buffer(buffer->q, buffer,
 506                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 507
 508         /* from here on: do not touch buffer anymore */
 509         qdio_release_aob(aob);
 510 }
 511
 512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 513 {
 514         return card->options.cq == QETH_CQ_ENABLED &&
 515             card->qdio.c_q != NULL &&
 516             queue != 0 &&
 517             queue == card->qdio.no_in_queues - 1;
 518 }
 519
 520 static int __qeth_issue_next_read(struct qeth_card *card)
 521 {
 522         int rc;
 523         struct qeth_cmd_buffer *iob;
 524
 525         QETH_CARD_TEXT(card, 5, "issnxrd");
 526         if (card->read.state != CH_STATE_UP)
 527                 return -EIO;
 528         iob = qeth_get_buffer(&card->read);
 529         if (!iob) {
 530                 dev_warn(&card->gdev->dev, "The qeth device driver "
 531                         "failed to recover an error on the device\n");
 532                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 533                         "available\n", dev_name(&card->gdev->dev));
 534                 return -ENOMEM;
 535         }
 536         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 537         QETH_CARD_TEXT(card, 6, "noirqpnd");
 538         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 539                               (addr_t) iob, 0, 0);
 540         if (rc) {
 541                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 542                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 543                 atomic_set(&card->read.irq_pending, 0);
 544                 card->read_or_write_problem = 1;
 545                 qeth_schedule_recovery(card);
 546                 wake_up(&card->wait_q);
 547         }
 548         return rc;
 549 }
 550
 551 static int qeth_issue_next_read(struct qeth_card *card)
 552 {
 553         int ret;
 554
 555         spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 556         ret = __qeth_issue_next_read(card);
 557         spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 558
 559         return ret;
 560 }
 561
 562 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 563 {
 564         struct qeth_reply *reply;
 565
 566         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 567         if (reply) {
 568                 atomic_set(&reply->refcnt, 1);
 569                 atomic_set(&reply->received, 0);
 570                 reply->card = card;
 571         }
 572         return reply;
 573 }
 574
 575 static void qeth_get_reply(struct qeth_reply *reply)
 576 {
 577         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 578         atomic_inc(&reply->refcnt);
 579 }
 580
 581 static void qeth_put_reply(struct qeth_reply *reply)
 582 {
 583         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 584         if (atomic_dec_and_test(&reply->refcnt))
 585                 kfree(reply);
 586 }
 587
 588 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 589                 struct qeth_card *card)
 590 {
 591         char *ipa_name;
 592         int com = cmd->hdr.command;
 593         ipa_name = qeth_get_ipa_cmd_name(com);
 594         if (rc)
 595                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 596                                 "x%X \"%s\"\n",
 597                                 ipa_name, com, dev_name(&card->gdev->dev),
 598                                 QETH_CARD_IFNAME(card), rc,
 599                                 qeth_get_ipa_msg(rc));
 600         else
 601                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 602                                 ipa_name, com, dev_name(&card->gdev->dev),
 603                                 QETH_CARD_IFNAME(card));
 604 }
 605
 606 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 607                 struct qeth_cmd_buffer *iob)
 608 {
 609         struct qeth_ipa_cmd *cmd = NULL;
 610
 611         QETH_CARD_TEXT(card, 5, "chkipad");
 612         if (IS_IPA(iob->data)) {
 613                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 614                 if (IS_IPA_REPLY(cmd)) {
 615                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 616                             cmd->hdr.command != IPA_CMD_DELCCID &&
 617                             cmd->hdr.command != IPA_CMD_MODCCID &&
 618                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 619                                 qeth_issue_ipa_msg(cmd,
 620                                                 cmd->hdr.return_code, card);
 621                         return cmd;
 622                 } else {
 623                         switch (cmd->hdr.command) {
 624                         case IPA_CMD_STOPLAN:
 625                                 if (cmd->hdr.return_code ==
 626                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 627                                         dev_err(&card->gdev->dev,
 628                                            "Interface %s is down because the "
 629                                            "adjacent port is no longer in "
 630                                            "reflective relay mode\n",
 631                                            QETH_CARD_IFNAME(card));
 632                                         qeth_close_dev(card);
 633                                 } else {
 634                                         dev_warn(&card->gdev->dev,
 635                                            "The link for interface %s on CHPID"
 636                                            " 0x%X failed\n",
 637                                            QETH_CARD_IFNAME(card),
 638                                            card->info.chpid);
 639                                         qeth_issue_ipa_msg(cmd,
 640                                                 cmd->hdr.return_code, card);
 641                                 }
 642                                 card->lan_online = 0;
 643                                 if (card->dev && netif_carrier_ok(card->dev))
 644                                         netif_carrier_off(card->dev);
 645                                 return NULL;
 646                         case IPA_CMD_STARTLAN:
 647                                 dev_info(&card->gdev->dev,
 648                                            "The link for %s on CHPID 0x%X has"
 649                                            " been restored\n",
 650                                            QETH_CARD_IFNAME(card),
 651                                            card->info.chpid);
 652                                 netif_carrier_on(card->dev);
 653                                 card->lan_online = 1;
 654                                 if (card->info.hwtrap)
 655                                         card->info.hwtrap = 2;
 656                                 qeth_schedule_recovery(card);
 657                                 return NULL;
 658                         case IPA_CMD_SETBRIDGEPORT_IQD:
 659                         case IPA_CMD_SETBRIDGEPORT_OSA:
 660                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 661                                 if (card->discipline->control_event_handler
 662                                                                 (card, cmd))
 663                                         return cmd;
 664                                 else
 665                                         return NULL;
 666                         case IPA_CMD_MODCCID:
 667                                 return cmd;
 668                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 669                                 QETH_CARD_TEXT(card, 3, "irla");
 670                                 break;
 671                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 672                                 QETH_CARD_TEXT(card, 3, "urla");
 673                                 break;
 674                         default:
 675                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 676                                            "but not a reply!\n");
 677                                 break;
 678                         }
 679                 }
 680         }
 681         return cmd;
 682 }
 683
 684 void qeth_clear_ipacmd_list(struct qeth_card *card)
 685 {
 686         struct qeth_reply *reply, *r;
 687         unsigned long flags;
 688
 689         QETH_CARD_TEXT(card, 4, "clipalst");
 690
 691         spin_lock_irqsave(&card->lock, flags);
 692         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 693                 qeth_get_reply(reply);
 694                 reply->rc = -EIO;
 695                 atomic_inc(&reply->received);
 696                 list_del_init(&reply->list);
 697                 wake_up(&reply->wait_q);
 698                 qeth_put_reply(reply);
 699         }
 700         spin_unlock_irqrestore(&card->lock, flags);
 701         atomic_set(&card->write.irq_pending, 0);
 702 }
 703 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 704
 705 static int qeth_check_idx_response(struct qeth_card *card,
 706         unsigned char *buffer)
 707 {
 708         if (!buffer)
 709                 return 0;
 710
 711         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 712         if ((buffer[2] & 0xc0) == 0xc0) {
 713                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 714                            "with cause code 0x%02x%s\n",
 715                            buffer[4],
 716                            ((buffer[4] == 0x22) ?
 717                             " -- try another portname" : ""));
 718                 QETH_CARD_TEXT(card, 2, "ckidxres");
 719                 QETH_CARD_TEXT(card, 2, " idxterm");
 720                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 721                 if (buffer[4] == 0xf6) {
 722                         dev_err(&card->gdev->dev,
 723                         "The qeth device is not configured "
 724                         "for the OSI layer required by z/VM\n");
 725                         return -EPERM;
 726                 }
 727                 return -EIO;
 728         }
 729         return 0;
 730 }
 731
 732 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 733 {
 734         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 735                 dev_get_drvdata(&cdev->dev))->dev);
 736         return card;
 737 }
 738
 739 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 740                 __u32 len)
 741 {
 742         struct qeth_card *card;
 743
 744         card = CARD_FROM_CDEV(channel->ccwdev);
 745         QETH_CARD_TEXT(card, 4, "setupccw");
 746         if (channel == &card->read)
 747                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 748         else
 749                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 750         channel->ccw.count = len;
 751         channel->ccw.cda = (__u32) __pa(iob);
 752 }
 753
 754 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 755 {
 756         __u8 index;
 757
 758         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 759         index = channel->io_buf_no;
 760         do {
 761                 if (channel->iob[index].state == BUF_STATE_FREE) {
 762                         channel->iob[index].state = BUF_STATE_LOCKED;
 763                         channel->io_buf_no = (channel->io_buf_no + 1) %
 764                                 QETH_CMD_BUFFER_NO;
 765                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 766                         return channel->iob + index;
 767                 }
 768                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 769         } while (index != channel->io_buf_no);
 770
 771         return NULL;
 772 }
 773
 774 void qeth_release_buffer(struct qeth_channel *channel,
 775                 struct qeth_cmd_buffer *iob)
 776 {
 777         unsigned long flags;
 778
 779         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 780         spin_lock_irqsave(&channel->iob_lock, flags);
 781         memset(iob->data, 0, QETH_BUFSIZE);
 782         iob->state = BUF_STATE_FREE;
 783         iob->callback = qeth_send_control_data_cb;
 784         iob->rc = 0;
 785         spin_unlock_irqrestore(&channel->iob_lock, flags);
 786         wake_up(&channel->wait_q);
 787 }
 788 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 789
 790 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 791 {
 792         struct qeth_cmd_buffer *buffer = NULL;
 793         unsigned long flags;
 794
 795         spin_lock_irqsave(&channel->iob_lock, flags);
 796         buffer = __qeth_get_buffer(channel);
 797         spin_unlock_irqrestore(&channel->iob_lock, flags);
 798         return buffer;
 799 }
 800
 801 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 802 {
 803         struct qeth_cmd_buffer *buffer;
 804         wait_event(channel->wait_q,
 805                    ((buffer = qeth_get_buffer(channel)) != NULL));
 806         return buffer;
 807 }
 808 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 809
 810 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 811 {
 812         int cnt;
 813
 814         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 815                 qeth_release_buffer(channel, &channel->iob[cnt]);
 816         channel->buf_no = 0;
 817         channel->io_buf_no = 0;
 818 }
 819 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 820
 821 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 822                   struct qeth_cmd_buffer *iob)
 823 {
 824         struct qeth_card *card;
 825         struct qeth_reply *reply, *r;
 826         struct qeth_ipa_cmd *cmd;
 827         unsigned long flags;
 828         int keep_reply;
 829         int rc = 0;
 830
 831         card = CARD_FROM_CDEV(channel->ccwdev);
 832         QETH_CARD_TEXT(card, 4, "sndctlcb");
 833         rc = qeth_check_idx_response(card, iob->data);
 834         switch (rc) {
 835         case 0:
 836                 break;
 837         case -EIO:
 838                 qeth_clear_ipacmd_list(card);
 839                 qeth_schedule_recovery(card);
 840                 /* fall through */
 841         default:
 842                 goto out;
 843         }
 844
 845         cmd = qeth_check_ipa_data(card, iob);
 846         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 847                 goto out;
 848         /*in case of OSN : check if cmd is set */
 849         if (card->info.type == QETH_CARD_TYPE_OSN &&
 850             cmd &&
 851             cmd->hdr.command != IPA_CMD_STARTLAN &&
 852             card->osn_info.assist_cb != NULL) {
 853                 card->osn_info.assist_cb(card->dev, cmd);
 854                 goto out;
 855         }
 856
 857         spin_lock_irqsave(&card->lock, flags);
 858         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 859                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 860                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 861                         qeth_get_reply(reply);
 862                         list_del_init(&reply->list);
 863                         spin_unlock_irqrestore(&card->lock, flags);
 864                         keep_reply = 0;
 865                         if (reply->callback != NULL) {
 866                                 if (cmd) {
 867                                         reply->offset = (__u16)((char *)cmd -
 868                                                         (char *)iob->data);
 869                                         keep_reply = reply->callback(card,
 870                                                         reply,
 871                                                         (unsigned long)cmd);
 872                                 } else
 873                                         keep_reply = reply->callback(card,
 874                                                         reply,
 875                                                         (unsigned long)iob);
 876                         }
 877                         if (cmd)
 878                                 reply->rc = (u16) cmd->hdr.return_code;
 879                         else if (iob->rc)
 880                                 reply->rc = iob->rc;
 881                         if (keep_reply) {
 882                                 spin_lock_irqsave(&card->lock, flags);
 883                                 list_add_tail(&reply->list,
 884                                               &card->cmd_waiter_list);
 885                                 spin_unlock_irqrestore(&card->lock, flags);
 886                         } else {
 887                                 atomic_inc(&reply->received);
 888                                 wake_up(&reply->wait_q);
 889                         }
 890                         qeth_put_reply(reply);
 891                         goto out;
 892                 }
 893         }
 894         spin_unlock_irqrestore(&card->lock, flags);
 895 out:
 896         memcpy(&card->seqno.pdu_hdr_ack,
 897                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 898                 QETH_SEQ_NO_LENGTH);
 899         qeth_release_buffer(channel, iob);
 900 }
 901
 902 static int qeth_setup_channel(struct qeth_channel *channel)
 903 {
 904         int cnt;
 905
 906         QETH_DBF_TEXT(SETUP, 2, "setupch");
 907         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 908                 channel->iob[cnt].data =
 909                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 910                 if (channel->iob[cnt].data == NULL)
 911                         break;
 912                 channel->iob[cnt].state = BUF_STATE_FREE;
 913                 channel->iob[cnt].channel = channel;
 914                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 915                 channel->iob[cnt].rc = 0;
 916         }
 917         if (cnt < QETH_CMD_BUFFER_NO) {
 918                 while (cnt-- > 0)
 919                         kfree(channel->iob[cnt].data);
 920                 return -ENOMEM;
 921         }
 922         channel->buf_no = 0;
 923         channel->io_buf_no = 0;
 924         atomic_set(&channel->irq_pending, 0);
 925         spin_lock_init(&channel->iob_lock);
 926
 927         init_waitqueue_head(&channel->wait_q);
 928         return 0;
 929 }
 930
 931 static int qeth_set_thread_start_bit(struct qeth_card *card,
 932                 unsigned long thread)
 933 {
 934         unsigned long flags;
 935
 936         spin_lock_irqsave(&card->thread_mask_lock, flags);
 937         if (!(card->thread_allowed_mask & thread) ||
 938               (card->thread_start_mask & thread)) {
 939                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 940                 return -EPERM;
 941         }
 942         card->thread_start_mask |= thread;
 943         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 944         return 0;
 945 }
 946
 947 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 948 {
 949         unsigned long flags;
 950
 951         spin_lock_irqsave(&card->thread_mask_lock, flags);
 952         card->thread_start_mask &= ~thread;
 953         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 954         wake_up(&card->wait_q);
 955 }
 956 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 957
 958 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 959 {
 960         unsigned long flags;
 961
 962         spin_lock_irqsave(&card->thread_mask_lock, flags);
 963         card->thread_running_mask &= ~thread;
 964         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 965         wake_up_all(&card->wait_q);
 966 }
 967 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 968
 969 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 970 {
 971         unsigned long flags;
 972         int rc = 0;
 973
 974         spin_lock_irqsave(&card->thread_mask_lock, flags);
 975         if (card->thread_start_mask & thread) {
 976                 if ((card->thread_allowed_mask & thread) &&
 977                     !(card->thread_running_mask & thread)) {
 978                         rc = 1;
 979                         card->thread_start_mask &= ~thread;
 980                         card->thread_running_mask |= thread;
 981                 } else
 982                         rc = -EPERM;
 983         }
 984         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 985         return rc;
 986 }
 987
 988 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 989 {
 990         int rc = 0;
 991
 992         wait_event(card->wait_q,
 993                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 994         return rc;
 995 }
 996 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 997
 998 void qeth_schedule_recovery(struct qeth_card *card)
 999 {
1000         QETH_CARD_TEXT(card, 2, "startrec");
1001         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1002                 schedule_work(&card->kernel_thread_starter);
1003 }
1004 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1005
1006 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1007 {
1008         int dstat, cstat;
1009         char *sense;
1010         struct qeth_card *card;
1011
1012         sense = (char *) irb->ecw;
1013         cstat = irb->scsw.cmd.cstat;
1014         dstat = irb->scsw.cmd.dstat;
1015         card = CARD_FROM_CDEV(cdev);
1016
1017         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1018                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1019                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1020                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1021                 dev_warn(&cdev->dev, "The qeth device driver "
1022                         "failed to recover an error on the device\n");
1023                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1024                         dev_name(&cdev->dev), dstat, cstat);
1025                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1026                                 16, 1, irb, 64, 1);
1027                 return 1;
1028         }
1029
1030         if (dstat & DEV_STAT_UNIT_CHECK) {
1031                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1032                     SENSE_RESETTING_EVENT_FLAG) {
1033                         QETH_CARD_TEXT(card, 2, "REVIND");
1034                         return 1;
1035                 }
1036                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1037                     SENSE_COMMAND_REJECT_FLAG) {
1038                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1039                         return 1;
1040                 }
1041                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1042                         QETH_CARD_TEXT(card, 2, "AFFE");
1043                         return 1;
1044                 }
1045                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1046                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1047                         return 0;
1048                 }
1049                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1050                         return 1;
1051         }
1052         return 0;
1053 }
1054
1055 static long __qeth_check_irb_error(struct ccw_device *cdev,
1056                 unsigned long intparm, struct irb *irb)
1057 {
1058         struct qeth_card *card;
1059
1060         card = CARD_FROM_CDEV(cdev);
1061
1062         if (!card || !IS_ERR(irb))
1063                 return 0;
1064
1065         switch (PTR_ERR(irb)) {
1066         case -EIO:
1067                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1068                         dev_name(&cdev->dev));
1069                 QETH_CARD_TEXT(card, 2, "ckirberr");
1070                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1071                 break;
1072         case -ETIMEDOUT:
1073                 dev_warn(&cdev->dev, "A hardware operation timed out"
1074                         " on the device\n");
1075                 QETH_CARD_TEXT(card, 2, "ckirberr");
1076                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1077                 if (intparm == QETH_RCD_PARM) {
1078                         if (card->data.ccwdev == cdev) {
1079                                 card->data.state = CH_STATE_DOWN;
1080                                 wake_up(&card->wait_q);
1081                         }
1082                 }
1083                 break;
1084         default:
1085                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1086                         dev_name(&cdev->dev), PTR_ERR(irb));
1087                 QETH_CARD_TEXT(card, 2, "ckirberr");
1088                 QETH_CARD_TEXT(card, 2, "  rc???");
1089         }
1090         return PTR_ERR(irb);
1091 }
1092
1093 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1094                 struct irb *irb)
1095 {
1096         int rc;
1097         int cstat, dstat;
1098         struct qeth_cmd_buffer *buffer;
1099         struct qeth_channel *channel;
1100         struct qeth_card *card;
1101         struct qeth_cmd_buffer *iob;
1102         __u8 index;
1103
1104         if (__qeth_check_irb_error(cdev, intparm, irb))
1105                 return;
1106         cstat = irb->scsw.cmd.cstat;
1107         dstat = irb->scsw.cmd.dstat;
1108
1109         card = CARD_FROM_CDEV(cdev);
1110         if (!card)
1111                 return;
1112
1113         QETH_CARD_TEXT(card, 5, "irq");
1114
1115         if (card->read.ccwdev == cdev) {
1116                 channel = &card->read;
1117                 QETH_CARD_TEXT(card, 5, "read");
1118         } else if (card->write.ccwdev == cdev) {
1119                 channel = &card->write;
1120                 QETH_CARD_TEXT(card, 5, "write");
1121         } else {
1122                 channel = &card->data;
1123                 QETH_CARD_TEXT(card, 5, "data");
1124         }
1125         atomic_set(&channel->irq_pending, 0);
1126
1127         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1128                 channel->state = CH_STATE_STOPPED;
1129
1130         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1131                 channel->state = CH_STATE_HALTED;
1132
1133         /*let's wake up immediately on data channel*/
1134         if ((channel == &card->data) && (intparm != 0) &&
1135             (intparm != QETH_RCD_PARM))
1136                 goto out;
1137
1138         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1139                 QETH_CARD_TEXT(card, 6, "clrchpar");
1140                 /* we don't have to handle this further */
1141                 intparm = 0;
1142         }
1143         if (intparm == QETH_HALT_CHANNEL_PARM) {
1144                 QETH_CARD_TEXT(card, 6, "hltchpar");
1145                 /* we don't have to handle this further */
1146                 intparm = 0;
1147         }
1148         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1149             (dstat & DEV_STAT_UNIT_CHECK) ||
1150             (cstat)) {
1151                 if (irb->esw.esw0.erw.cons) {
1152                         dev_warn(&channel->ccwdev->dev,
1153                                 "The qeth device driver failed to recover "
1154                                 "an error on the device\n");
1155                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1156                                 "0x%X dstat 0x%X\n",
1157                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1158                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1159                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1160                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1161                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1162                 }
1163                 if (intparm == QETH_RCD_PARM) {
1164                         channel->state = CH_STATE_DOWN;
1165                         goto out;
1166                 }
1167                 rc = qeth_get_problem(cdev, irb);
1168                 if (rc) {
1169                         card->read_or_write_problem = 1;
1170                         qeth_clear_ipacmd_list(card);
1171                         qeth_schedule_recovery(card);
1172                         goto out;
1173                 }
1174         }
1175
1176         if (intparm == QETH_RCD_PARM) {
1177                 channel->state = CH_STATE_RCD_DONE;
1178                 goto out;
1179         }
1180         if (intparm) {
1181                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1182                 buffer->state = BUF_STATE_PROCESSED;
1183         }
1184         if (channel == &card->data)
1185                 return;
1186         if (channel == &card->read &&
1187             channel->state == CH_STATE_UP)
1188                 __qeth_issue_next_read(card);
1189
1190         iob = channel->iob;
1191         index = channel->buf_no;
1192         while (iob[index].state == BUF_STATE_PROCESSED) {
1193                 if (iob[index].callback != NULL)
1194                         iob[index].callback(channel, iob + index);
1195
1196                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1197         }
1198         channel->buf_no = index;
1199 out:
1200         wake_up(&card->wait_q);
1201         return;
1202 }
1203
1204 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1205                 struct qeth_qdio_out_buffer *buf,
1206                 enum iucv_tx_notify notification)
1207 {
1208         struct sk_buff *skb;
1209
1210         if (skb_queue_empty(&buf->skb_list))
1211                 goto out;
1212         skb = skb_peek(&buf->skb_list);
1213         while (skb) {
1214                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1215                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1216                 if (skb->protocol == ETH_P_AF_IUCV) {
1217                         if (skb->sk) {
1218                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1219                                 iucv->sk_txnotify(skb, notification);
1220                         }
1221                 }
1222                 if (skb_queue_is_last(&buf->skb_list, skb))
1223                         skb = NULL;
1224                 else
1225                         skb = skb_queue_next(&buf->skb_list, skb);
1226         }
1227 out:
1228         return;
1229 }
1230
1231 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1232 {
1233         struct sk_buff *skb;
1234         struct iucv_sock *iucv;
1235         int notify_general_error = 0;
1236
1237         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1238                 notify_general_error = 1;
1239
1240         /* release may never happen from within CQ tasklet scope */
1241         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1242
1243         skb = skb_dequeue(&buf->skb_list);
1244         while (skb) {
1245                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1246                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1247                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1248                         if (skb->sk) {
1249                                 iucv = iucv_sk(skb->sk);
1250                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1251                         }
1252                 }
1253                 atomic_dec(&skb->users);
1254                 dev_kfree_skb_any(skb);
1255                 skb = skb_dequeue(&buf->skb_list);
1256         }
1257 }
1258
1259 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1260                 struct qeth_qdio_out_buffer *buf,
1261                 enum qeth_qdio_buffer_states newbufstate)
1262 {
1263         int i;
1264
1265         /* is PCI flag set on buffer? */
1266         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1267                 atomic_dec(&queue->set_pci_flags_count);
1268
1269         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1270                 qeth_release_skbs(buf);
1271         }
1272         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1273                 if (buf->buffer->element[i].addr && buf->is_header[i])
1274                         kmem_cache_free(qeth_core_header_cache,
1275                                 buf->buffer->element[i].addr);
1276                 buf->is_header[i] = 0;
1277                 buf->buffer->element[i].length = 0;
1278                 buf->buffer->element[i].addr = NULL;
1279                 buf->buffer->element[i].eflags = 0;
1280                 buf->buffer->element[i].sflags = 0;
1281         }
1282         buf->buffer->element[15].eflags = 0;
1283         buf->buffer->element[15].sflags = 0;
1284         buf->next_element_to_fill = 0;
1285         atomic_set(&buf->state, newbufstate);
1286 }
1287
1288 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1289 {
1290         int j;
1291
1292         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1293                 if (!q->bufs[j])
1294                         continue;
1295                 qeth_cleanup_handled_pending(q, j, 1);
1296                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1297                 if (free) {
1298                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1299                         q->bufs[j] = NULL;
1300                 }
1301         }
1302 }
1303
1304 void qeth_clear_qdio_buffers(struct qeth_card *card)
1305 {
1306         int i;
1307
1308         QETH_CARD_TEXT(card, 2, "clearqdbf");
1309         /* clear outbound buffers to free skbs */
1310         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1311                 if (card->qdio.out_qs[i]) {
1312                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1313                 }
1314         }
1315 }
1316 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1317
1318 static void qeth_free_buffer_pool(struct qeth_card *card)
1319 {
1320         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1321         int i = 0;
1322         list_for_each_entry_safe(pool_entry, tmp,
1323                                  &card->qdio.init_pool.entry_list, init_list){
1324                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1325                         free_page((unsigned long)pool_entry->elements[i]);
1326                 list_del(&pool_entry->init_list);
1327                 kfree(pool_entry);
1328         }
1329 }
1330
1331 static void qeth_clean_channel(struct qeth_channel *channel)
1332 {
1333         int cnt;
1334
1335         QETH_DBF_TEXT(SETUP, 2, "freech");
1336         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1337                 kfree(channel->iob[cnt].data);
1338 }
1339
1340 static void qeth_set_single_write_queues(struct qeth_card *card)
1341 {
1342         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1343             (card->qdio.no_out_queues == 4))
1344                 qeth_free_qdio_buffers(card);
1345
1346         card->qdio.no_out_queues = 1;
1347         if (card->qdio.default_out_queue != 0)
1348                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1349
1350         card->qdio.default_out_queue = 0;
1351 }
1352
1353 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1354 {
1355         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1356             (card->qdio.no_out_queues == 1)) {
1357                 qeth_free_qdio_buffers(card);
1358                 card->qdio.default_out_queue = 2;
1359         }
1360         card->qdio.no_out_queues = 4;
1361 }
1362
1363 static void qeth_update_from_chp_desc(struct qeth_card *card)
1364 {
1365         struct ccw_device *ccwdev;
1366         struct channel_path_desc *chp_dsc;
1367
1368         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1369
1370         ccwdev = card->data.ccwdev;
1371         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1372         if (!chp_dsc)
1373                 goto out;
1374
1375         card->info.func_level = 0x4100 + chp_dsc->desc;
1376         if (card->info.type == QETH_CARD_TYPE_IQD)
1377                 goto out;
1378
1379         /* CHPP field bit 6 == 1 -> single queue */
1380         if ((chp_dsc->chpp & 0x02) == 0x02)
1381                 qeth_set_single_write_queues(card);
1382         else
1383                 qeth_set_multiple_write_queues(card);
1384 out:
1385         kfree(chp_dsc);
1386         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1387         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1388 }
1389
1390 static void qeth_init_qdio_info(struct qeth_card *card)
1391 {
1392         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1393         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1394         /* inbound */
1395         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1396         if (card->info.type == QETH_CARD_TYPE_IQD)
1397                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1398         else
1399                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1400         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1401         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1402         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1403 }
1404
1405 static void qeth_set_intial_options(struct qeth_card *card)
1406 {
1407         card->options.route4.type = NO_ROUTER;
1408         card->options.route6.type = NO_ROUTER;
1409         card->options.fake_broadcast = 0;
1410         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1411         card->options.performance_stats = 0;
1412         card->options.rx_sg_cb = QETH_RX_SG_CB;
1413         card->options.isolation = ISOLATION_MODE_NONE;
1414         card->options.cq = QETH_CQ_DISABLED;
1415 }
1416
1417 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1418 {
1419         unsigned long flags;
1420         int rc = 0;
1421
1422         spin_lock_irqsave(&card->thread_mask_lock, flags);
1423         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1424                         (u8) card->thread_start_mask,
1425                         (u8) card->thread_allowed_mask,
1426                         (u8) card->thread_running_mask);
1427         rc = (card->thread_start_mask & thread);
1428         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1429         return rc;
1430 }
1431
1432 static void qeth_start_kernel_thread(struct work_struct *work)
1433 {
1434         struct task_struct *ts;
1435         struct qeth_card *card = container_of(work, struct qeth_card,
1436                                         kernel_thread_starter);
1437         QETH_CARD_TEXT(card , 2, "strthrd");
1438
1439         if (card->read.state != CH_STATE_UP &&
1440             card->write.state != CH_STATE_UP)
1441                 return;
1442         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1443                 ts = kthread_run(card->discipline->recover, (void *)card,
1444                                 "qeth_recover");
1445                 if (IS_ERR(ts)) {
1446                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1447                         qeth_clear_thread_running_bit(card,
1448                                 QETH_RECOVER_THREAD);
1449                 }
1450         }
1451 }
1452
1453 static void qeth_buffer_reclaim_work(struct work_struct *);
1454 static int qeth_setup_card(struct qeth_card *card)
1455 {
1456
1457         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1458         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1459
1460         card->read.state  = CH_STATE_DOWN;
1461         card->write.state = CH_STATE_DOWN;
1462         card->data.state  = CH_STATE_DOWN;
1463         card->state = CARD_STATE_DOWN;
1464         card->lan_online = 0;
1465         card->read_or_write_problem = 0;
1466         card->dev = NULL;
1467         spin_lock_init(&card->vlanlock);
1468         spin_lock_init(&card->mclock);
1469         spin_lock_init(&card->lock);
1470         spin_lock_init(&card->ip_lock);
1471         spin_lock_init(&card->thread_mask_lock);
1472         mutex_init(&card->conf_mutex);
1473         mutex_init(&card->discipline_mutex);
1474         card->thread_start_mask = 0;
1475         card->thread_allowed_mask = 0;
1476         card->thread_running_mask = 0;
1477         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1478         INIT_LIST_HEAD(&card->ip_list);
1479         INIT_LIST_HEAD(card->ip_tbd_list);
1480         INIT_LIST_HEAD(&card->cmd_waiter_list);
1481         init_waitqueue_head(&card->wait_q);
1482         /* initial options */
1483         qeth_set_intial_options(card);
1484         /* IP address takeover */
1485         INIT_LIST_HEAD(&card->ipato.entries);
1486         card->ipato.enabled = 0;
1487         card->ipato.invert4 = 0;
1488         card->ipato.invert6 = 0;
1489         /* init QDIO stuff */
1490         qeth_init_qdio_info(card);
1491         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1492         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1493         return 0;
1494 }
1495
1496 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1497 {
1498         struct qeth_card *card = container_of(slr, struct qeth_card,
1499                                         qeth_service_level);
1500         if (card->info.mcl_level[0])
1501                 seq_printf(m, "qeth: %s firmware level %s\n",
1502                         CARD_BUS_ID(card), card->info.mcl_level);
1503 }
1504
1505 static struct qeth_card *qeth_alloc_card(void)
1506 {
1507         struct qeth_card *card;
1508
1509         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1510         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1511         if (!card)
1512                 goto out;
1513         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1514         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1515         if (!card->ip_tbd_list) {
1516                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1517                 goto out_card;
1518         }
1519         if (qeth_setup_channel(&card->read))
1520                 goto out_ip;
1521         if (qeth_setup_channel(&card->write))
1522                 goto out_channel;
1523         card->options.layer2 = -1;
1524         card->qeth_service_level.seq_print = qeth_core_sl_print;
1525         register_service_level(&card->qeth_service_level);
1526         return card;
1527
1528 out_channel:
1529         qeth_clean_channel(&card->read);
1530 out_ip:
1531         kfree(card->ip_tbd_list);
1532 out_card:
1533         kfree(card);
1534 out:
1535         return NULL;
1536 }
1537
1538 static int qeth_determine_card_type(struct qeth_card *card)
1539 {
1540         int i = 0;
1541
1542         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1543
1544         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1545         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1546         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1547                 if ((CARD_RDEV(card)->id.dev_type ==
1548                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1549                     (CARD_RDEV(card)->id.dev_model ==
1550                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1551                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1552                         card->qdio.no_out_queues =
1553                                 known_devices[i][QETH_QUEUE_NO_IND];
1554                         card->qdio.no_in_queues = 1;
1555                         card->info.is_multicast_different =
1556                                 known_devices[i][QETH_MULTICAST_IND];
1557                         qeth_update_from_chp_desc(card);
1558                         return 0;
1559                 }
1560                 i++;
1561         }
1562         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1563         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1564                 "unknown type\n");
1565         return -ENOENT;
1566 }
1567
1568 static int qeth_clear_channel(struct qeth_channel *channel)
1569 {
1570         unsigned long flags;
1571         struct qeth_card *card;
1572         int rc;
1573
1574         card = CARD_FROM_CDEV(channel->ccwdev);
1575         QETH_CARD_TEXT(card, 3, "clearch");
1576         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1577         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1578         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1579
1580         if (rc)
1581                 return rc;
1582         rc = wait_event_interruptible_timeout(card->wait_q,
1583                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1584         if (rc == -ERESTARTSYS)
1585                 return rc;
1586         if (channel->state != CH_STATE_STOPPED)
1587                 return -ETIME;
1588         channel->state = CH_STATE_DOWN;
1589         return 0;
1590 }
1591
1592 static int qeth_halt_channel(struct qeth_channel *channel)
1593 {
1594         unsigned long flags;
1595         struct qeth_card *card;
1596         int rc;
1597
1598         card = CARD_FROM_CDEV(channel->ccwdev);
1599         QETH_CARD_TEXT(card, 3, "haltch");
1600         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1601         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1602         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1603
1604         if (rc)
1605                 return rc;
1606         rc = wait_event_interruptible_timeout(card->wait_q,
1607                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1608         if (rc == -ERESTARTSYS)
1609                 return rc;
1610         if (channel->state != CH_STATE_HALTED)
1611                 return -ETIME;
1612         return 0;
1613 }
1614
1615 static int qeth_halt_channels(struct qeth_card *card)
1616 {
1617         int rc1 = 0, rc2 = 0, rc3 = 0;
1618
1619         QETH_CARD_TEXT(card, 3, "haltchs");
1620         rc1 = qeth_halt_channel(&card->read);
1621         rc2 = qeth_halt_channel(&card->write);
1622         rc3 = qeth_halt_channel(&card->data);
1623         if (rc1)
1624                 return rc1;
1625         if (rc2)
1626                 return rc2;
1627         return rc3;
1628 }
1629
1630 static int qeth_clear_channels(struct qeth_card *card)
1631 {
1632         int rc1 = 0, rc2 = 0, rc3 = 0;
1633
1634         QETH_CARD_TEXT(card, 3, "clearchs");
1635         rc1 = qeth_clear_channel(&card->read);
1636         rc2 = qeth_clear_channel(&card->write);
1637         rc3 = qeth_clear_channel(&card->data);
1638         if (rc1)
1639                 return rc1;
1640         if (rc2)
1641                 return rc2;
1642         return rc3;
1643 }
1644
1645 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1646 {
1647         int rc = 0;
1648
1649         QETH_CARD_TEXT(card, 3, "clhacrd");
1650
1651         if (halt)
1652                 rc = qeth_halt_channels(card);
1653         if (rc)
1654                 return rc;
1655         return qeth_clear_channels(card);
1656 }
1657
1658 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1659 {
1660         int rc = 0;
1661
1662         QETH_CARD_TEXT(card, 3, "qdioclr");
1663         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1664                 QETH_QDIO_CLEANING)) {
1665         case QETH_QDIO_ESTABLISHED:
1666                 if (card->info.type == QETH_CARD_TYPE_IQD)
1667                         rc = qdio_shutdown(CARD_DDEV(card),
1668                                 QDIO_FLAG_CLEANUP_USING_HALT);
1669                 else
1670                         rc = qdio_shutdown(CARD_DDEV(card),
1671                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1672                 if (rc)
1673                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1674                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1675                 break;
1676         case QETH_QDIO_CLEANING:
1677                 return rc;
1678         default:
1679                 break;
1680         }
1681         rc = qeth_clear_halt_card(card, use_halt);
1682         if (rc)
1683                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1684         card->state = CARD_STATE_DOWN;
1685         return rc;
1686 }
1687 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1688
1689 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1690                                int *length)
1691 {
1692         struct ciw *ciw;
1693         char *rcd_buf;
1694         int ret;
1695         struct qeth_channel *channel = &card->data;
1696         unsigned long flags;
1697
1698         /*
1699          * scan for RCD command in extended SenseID data
1700          */
1701         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1702         if (!ciw || ciw->cmd == 0)
1703                 return -EOPNOTSUPP;
1704         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1705         if (!rcd_buf)
1706                 return -ENOMEM;
1707
1708         channel->ccw.cmd_code = ciw->cmd;
1709         channel->ccw.cda = (__u32) __pa(rcd_buf);
1710         channel->ccw.count = ciw->count;
1711         channel->ccw.flags = CCW_FLAG_SLI;
1712         channel->state = CH_STATE_RCD;
1713         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1714         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1715                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1716                                        QETH_RCD_TIMEOUT);
1717         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1718         if (!ret)
1719                 wait_event(card->wait_q,
1720                            (channel->state == CH_STATE_RCD_DONE ||
1721                             channel->state == CH_STATE_DOWN));
1722         if (channel->state == CH_STATE_DOWN)
1723                 ret = -EIO;
1724         else
1725                 channel->state = CH_STATE_DOWN;
1726         if (ret) {
1727                 kfree(rcd_buf);
1728                 *buffer = NULL;
1729                 *length = 0;
1730         } else {
1731                 *length = ciw->count;
1732                 *buffer = rcd_buf;
1733         }
1734         return ret;
1735 }
1736
1737 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1738 {
1739         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1740         card->info.chpid = prcd[30];
1741         card->info.unit_addr2 = prcd[31];
1742         card->info.cula = prcd[63];
1743         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1744                                (prcd[0x11] == _ascebc['M']));
1745 }
1746
1747 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1748 {
1749         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1750
1751         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1752             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1753                 card->info.blkt.time_total = 0;
1754                 card->info.blkt.inter_packet = 0;
1755                 card->info.blkt.inter_packet_jumbo = 0;
1756         } else {
1757                 card->info.blkt.time_total = 250;
1758                 card->info.blkt.inter_packet = 5;
1759                 card->info.blkt.inter_packet_jumbo = 15;
1760         }
1761 }
1762
1763 static void qeth_init_tokens(struct qeth_card *card)
1764 {
1765         card->token.issuer_rm_w = 0x00010103UL;
1766         card->token.cm_filter_w = 0x00010108UL;
1767         card->token.cm_connection_w = 0x0001010aUL;
1768         card->token.ulp_filter_w = 0x0001010bUL;
1769         card->token.ulp_connection_w = 0x0001010dUL;
1770 }
1771
1772 static void qeth_init_func_level(struct qeth_card *card)
1773 {
1774         switch (card->info.type) {
1775         case QETH_CARD_TYPE_IQD:
1776                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1777                 break;
1778         case QETH_CARD_TYPE_OSD:
1779         case QETH_CARD_TYPE_OSN:
1780                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1781                 break;
1782         default:
1783                 break;
1784         }
1785 }
1786
1787 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1788                 void (*idx_reply_cb)(struct qeth_channel *,
1789                         struct qeth_cmd_buffer *))
1790 {
1791         struct qeth_cmd_buffer *iob;
1792         unsigned long flags;
1793         int rc;
1794         struct qeth_card *card;
1795
1796         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1797         card = CARD_FROM_CDEV(channel->ccwdev);
1798         iob = qeth_get_buffer(channel);
1799         if (!iob)
1800                 return -ENOMEM;
1801         iob->callback = idx_reply_cb;
1802         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1803         channel->ccw.count = QETH_BUFSIZE;
1804         channel->ccw.cda = (__u32) __pa(iob->data);
1805
1806         wait_event(card->wait_q,
1807                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1808         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1809         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1810         rc = ccw_device_start(channel->ccwdev,
1811                               &channel->ccw, (addr_t) iob, 0, 0);
1812         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1813
1814         if (rc) {
1815                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1816                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1817                 atomic_set(&channel->irq_pending, 0);
1818                 wake_up(&card->wait_q);
1819                 return rc;
1820         }
1821         rc = wait_event_interruptible_timeout(card->wait_q,
1822                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1823         if (rc == -ERESTARTSYS)
1824                 return rc;
1825         if (channel->state != CH_STATE_UP) {
1826                 rc = -ETIME;
1827                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1828                 qeth_clear_cmd_buffers(channel);
1829         } else
1830                 rc = 0;
1831         return rc;
1832 }
1833
1834 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1835                 void (*idx_reply_cb)(struct qeth_channel *,
1836                         struct qeth_cmd_buffer *))
1837 {
1838         struct qeth_card *card;
1839         struct qeth_cmd_buffer *iob;
1840         unsigned long flags;
1841         __u16 temp;
1842         __u8 tmp;
1843         int rc;
1844         struct ccw_dev_id temp_devid;
1845
1846         card = CARD_FROM_CDEV(channel->ccwdev);
1847
1848         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1849
1850         iob = qeth_get_buffer(channel);
1851         if (!iob)
1852                 return -ENOMEM;
1853         iob->callback = idx_reply_cb;
1854         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1855         channel->ccw.count = IDX_ACTIVATE_SIZE;
1856         channel->ccw.cda = (__u32) __pa(iob->data);
1857         if (channel == &card->write) {
1858                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1859                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1860                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1861                 card->seqno.trans_hdr++;
1862         } else {
1863                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1864                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1865                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1866         }
1867         tmp = ((__u8)card->info.portno) | 0x80;
1868         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1869         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1870                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1871         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1872                &card->info.func_level, sizeof(__u16));
1873         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1874         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1875         temp = (card->info.cula << 8) + card->info.unit_addr2;
1876         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1877
1878         wait_event(card->wait_q,
1879                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1880         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1881         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1882         rc = ccw_device_start(channel->ccwdev,
1883                               &channel->ccw, (addr_t) iob, 0, 0);
1884         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1885
1886         if (rc) {
1887                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1888                         rc);
1889                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1890                 atomic_set(&channel->irq_pending, 0);
1891                 wake_up(&card->wait_q);
1892                 return rc;
1893         }
1894         rc = wait_event_interruptible_timeout(card->wait_q,
1895                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1896         if (rc == -ERESTARTSYS)
1897                 return rc;
1898         if (channel->state != CH_STATE_ACTIVATING) {
1899                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1900                         " failed to recover an error on the device\n");
1901                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1902                         dev_name(&channel->ccwdev->dev));
1903                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1904                 qeth_clear_cmd_buffers(channel);
1905                 return -ETIME;
1906         }
1907         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1908 }
1909
1910 static int qeth_peer_func_level(int level)
1911 {
1912         if ((level & 0xff) == 8)
1913                 return (level & 0xff) + 0x400;
1914         if (((level >> 8) & 3) == 1)
1915                 return (level & 0xff) + 0x200;
1916         return level;
1917 }
1918
1919 static void qeth_idx_write_cb(struct qeth_channel *channel,
1920                 struct qeth_cmd_buffer *iob)
1921 {
1922         struct qeth_card *card;
1923         __u16 temp;
1924
1925         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1926
1927         if (channel->state == CH_STATE_DOWN) {
1928                 channel->state = CH_STATE_ACTIVATING;
1929                 goto out;
1930         }
1931         card = CARD_FROM_CDEV(channel->ccwdev);
1932
1933         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1934                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1935                         dev_err(&card->write.ccwdev->dev,
1936                                 "The adapter is used exclusively by another "
1937                                 "host\n");
1938                 else
1939                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1940                                 " negative reply\n",
1941                                 dev_name(&card->write.ccwdev->dev));
1942                 goto out;
1943         }
1944         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1945         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1946                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1947                         "function level mismatch (sent: 0x%x, received: "
1948                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1949                         card->info.func_level, temp);
1950                 goto out;
1951         }
1952         channel->state = CH_STATE_UP;
1953 out:
1954         qeth_release_buffer(channel, iob);
1955 }
1956
1957 static void qeth_idx_read_cb(struct qeth_channel *channel,
1958                 struct qeth_cmd_buffer *iob)
1959 {
1960         struct qeth_card *card;
1961         __u16 temp;
1962
1963         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1964         if (channel->state == CH_STATE_DOWN) {
1965                 channel->state = CH_STATE_ACTIVATING;
1966                 goto out;
1967         }
1968
1969         card = CARD_FROM_CDEV(channel->ccwdev);
1970         if (qeth_check_idx_response(card, iob->data))
1971                         goto out;
1972
1973         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1974                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1975                 case QETH_IDX_ACT_ERR_EXCL:
1976                         dev_err(&card->write.ccwdev->dev,
1977                                 "The adapter is used exclusively by another "
1978                                 "host\n");
1979                         break;
1980                 case QETH_IDX_ACT_ERR_AUTH:
1981                 case QETH_IDX_ACT_ERR_AUTH_USER:
1982                         dev_err(&card->read.ccwdev->dev,
1983                                 "Setting the device online failed because of "
1984                                 "insufficient authorization\n");
1985                         break;
1986                 default:
1987                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1988                                 " negative reply\n",
1989                                 dev_name(&card->read.ccwdev->dev));
1990                 }
1991                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1992                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1993                 goto out;
1994         }
1995
1996         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1997         if (temp != qeth_peer_func_level(card->info.func_level)) {
1998                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1999                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
2000                         dev_name(&card->read.ccwdev->dev),
2001                         card->info.func_level, temp);
2002                 goto out;
2003         }
2004         memcpy(&card->token.issuer_rm_r,
2005                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2006                QETH_MPC_TOKEN_LENGTH);
2007         memcpy(&card->info.mcl_level[0],
2008                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2009         channel->state = CH_STATE_UP;
2010 out:
2011         qeth_release_buffer(channel, iob);
2012 }
2013
2014 void qeth_prepare_control_data(struct qeth_card *card, int len,
2015                 struct qeth_cmd_buffer *iob)
2016 {
2017         qeth_setup_ccw(&card->write, iob->data, len);
2018         iob->callback = qeth_release_buffer;
2019
2020         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2021                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2022         card->seqno.trans_hdr++;
2023         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2024                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2025         card->seqno.pdu_hdr++;
2026         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2027                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2028         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2029 }
2030 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2031
2032 /**
2033  * qeth_send_control_data() -   send control command to the card
2034  * @card:                       qeth_card structure pointer
2035  * @len:                        size of the command buffer
2036  * @iob:                        qeth_cmd_buffer pointer
2037  * @reply_cb:                   callback function pointer
2038  * @cb_card:                    pointer to the qeth_card structure
2039  * @cb_reply:                   pointer to the qeth_reply structure
2040  * @cb_cmd:                     pointer to the original iob for non-IPA
2041  *                              commands, or to the qeth_ipa_cmd structure
2042  *                              for the IPA commands.
2043  * @reply_param:                private pointer passed to the callback
2044  *
2045  * Returns the value of the `return_code' field of the response
2046  * block returned from the hardware, or other error indication.
2047  * Value of zero indicates successful execution of the command.
2048  *
2049  * Callback function gets called one or more times, with cb_cmd
2050  * pointing to the response returned by the hardware. Callback
2051  * function must return non-zero if more reply blocks are expected,
2052  * and zero if the last or only reply block is received. Callback
2053  * function can get the value of the reply_param pointer from the
2054  * field 'param' of the structure qeth_reply.
2055  */
2056
2057 int qeth_send_control_data(struct qeth_card *card, int len,
2058                 struct qeth_cmd_buffer *iob,
2059                 int (*reply_cb)(struct qeth_card *cb_card,
2060                                 struct qeth_reply *cb_reply,
2061                                 unsigned long cb_cmd),
2062                 void *reply_param)
2063 {
2064         int rc;
2065         unsigned long flags;
2066         struct qeth_reply *reply = NULL;
2067         unsigned long timeout, event_timeout;
2068         struct qeth_ipa_cmd *cmd = NULL;
2069
2070         QETH_CARD_TEXT(card, 2, "sendctl");
2071
2072         if (card->read_or_write_problem) {
2073                 qeth_release_buffer(iob->channel, iob);
2074                 return -EIO;
2075         }
2076         reply = qeth_alloc_reply(card);
2077         if (!reply) {
2078                 return -ENOMEM;
2079         }
2080         reply->callback = reply_cb;
2081         reply->param = reply_param;
2082
2083         init_waitqueue_head(&reply->wait_q);
2084         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2085
2086         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2087
2088         if (IS_IPA(iob->data)) {
2089                 cmd = __ipa_cmd(iob);
2090                 cmd->hdr.seqno = card->seqno.ipa++;
2091                 reply->seqno = cmd->hdr.seqno;
2092                 event_timeout = QETH_IPA_TIMEOUT;
2093         } else {
2094                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2095                 event_timeout = QETH_TIMEOUT;
2096         }
2097         qeth_prepare_control_data(card, len, iob);
2098
2099         spin_lock_irqsave(&card->lock, flags);
2100         list_add_tail(&reply->list, &card->cmd_waiter_list);
2101         spin_unlock_irqrestore(&card->lock, flags);
2102
2103         timeout = jiffies + event_timeout;
2104
2105         QETH_CARD_TEXT(card, 6, "noirqpnd");
2106         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2107         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2108                               (addr_t) iob, 0, 0);
2109         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2110         if (rc) {
2111                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2112                         "ccw_device_start rc = %i\n",
2113                         dev_name(&card->write.ccwdev->dev), rc);
2114                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2115                 spin_lock_irqsave(&card->lock, flags);
2116                 list_del_init(&reply->list);
2117                 qeth_put_reply(reply);
2118                 spin_unlock_irqrestore(&card->lock, flags);
2119                 qeth_release_buffer(iob->channel, iob);
2120                 atomic_set(&card->write.irq_pending, 0);
2121                 wake_up(&card->wait_q);
2122                 return rc;
2123         }
2124
2125         /* we have only one long running ipassist, since we can ensure
2126            process context of this command we can sleep */
2127         if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2128             cmd->hdr.prot_version == QETH_PROT_IPV4) {
2129                 if (!wait_event_timeout(reply->wait_q,
2130                     atomic_read(&reply->received), event_timeout))
2131                         goto time_err;
2132         } else {
2133                 while (!atomic_read(&reply->received)) {
2134                         if (time_after(jiffies, timeout))
2135                                 goto time_err;
2136                         cpu_relax();
2137                 }
2138         }
2139
2140         if (reply->rc == -EIO)
2141                 goto error;
2142         rc = reply->rc;
2143         qeth_put_reply(reply);
2144         return rc;
2145
2146 time_err:
2147         reply->rc = -ETIME;
2148         spin_lock_irqsave(&reply->card->lock, flags);
2149         list_del_init(&reply->list);
2150         spin_unlock_irqrestore(&reply->card->lock, flags);
2151         atomic_inc(&reply->received);
2152 error:
2153         atomic_set(&card->write.irq_pending, 0);
2154         qeth_release_buffer(iob->channel, iob);
2155         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2156         rc = reply->rc;
2157         qeth_put_reply(reply);
2158         return rc;
2159 }
2160 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2161
2162 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2163                 unsigned long data)
2164 {
2165         struct qeth_cmd_buffer *iob;
2166
2167         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2168
2169         iob = (struct qeth_cmd_buffer *) data;
2170         memcpy(&card->token.cm_filter_r,
2171                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2172                QETH_MPC_TOKEN_LENGTH);
2173         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2174         return 0;
2175 }
2176
2177 static int qeth_cm_enable(struct qeth_card *card)
2178 {
2179         int rc;
2180         struct qeth_cmd_buffer *iob;
2181
2182         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2183
2184         iob = qeth_wait_for_buffer(&card->write);
2185         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2186         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2187                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2188         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2189                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2190
2191         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2192                                     qeth_cm_enable_cb, NULL);
2193         return rc;
2194 }
2195
2196 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2197                 unsigned long data)
2198 {
2199
2200         struct qeth_cmd_buffer *iob;
2201
2202         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2203
2204         iob = (struct qeth_cmd_buffer *) data;
2205         memcpy(&card->token.cm_connection_r,
2206                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2207                QETH_MPC_TOKEN_LENGTH);
2208         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2209         return 0;
2210 }
2211
2212 static int qeth_cm_setup(struct qeth_card *card)
2213 {
2214         int rc;
2215         struct qeth_cmd_buffer *iob;
2216
2217         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2218
2219         iob = qeth_wait_for_buffer(&card->write);
2220         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2221         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2222                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2223         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2224                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2225         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2226                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2227         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2228                                     qeth_cm_setup_cb, NULL);
2229         return rc;
2230
2231 }
2232
2233 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2234 {
2235         switch (card->info.type) {
2236         case QETH_CARD_TYPE_UNKNOWN:
2237                 return 1500;
2238         case QETH_CARD_TYPE_IQD:
2239                 return card->info.max_mtu;
2240         case QETH_CARD_TYPE_OSD:
2241                 switch (card->info.link_type) {
2242                 case QETH_LINK_TYPE_HSTR:
2243                 case QETH_LINK_TYPE_LANE_TR:
2244                         return 2000;
2245                 default:
2246                         return card->options.layer2 ? 1500 : 1492;
2247                 }
2248         case QETH_CARD_TYPE_OSM:
2249         case QETH_CARD_TYPE_OSX:
2250                 return card->options.layer2 ? 1500 : 1492;
2251         default:
2252                 return 1500;
2253         }
2254 }
2255
2256 static inline int qeth_get_mtu_outof_framesize(int framesize)
2257 {
2258         switch (framesize) {
2259         case 0x4000:
2260                 return 8192;
2261         case 0x6000:
2262                 return 16384;
2263         case 0xa000:
2264                 return 32768;
2265         case 0xffff:
2266                 return 57344;
2267         default:
2268                 return 0;
2269         }
2270 }
2271
2272 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2273 {
2274         switch (card->info.type) {
2275         case QETH_CARD_TYPE_OSD:
2276         case QETH_CARD_TYPE_OSM:
2277         case QETH_CARD_TYPE_OSX:
2278         case QETH_CARD_TYPE_IQD:
2279                 return ((mtu >= 576) &&
2280                         (mtu <= card->info.max_mtu));
2281         case QETH_CARD_TYPE_OSN:
2282         case QETH_CARD_TYPE_UNKNOWN:
2283         default:
2284                 return 1;
2285         }
2286 }
2287
2288 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2289                 unsigned long data)
2290 {
2291
2292         __u16 mtu, framesize;
2293         __u16 len;
2294         __u8 link_type;
2295         struct qeth_cmd_buffer *iob;
2296
2297         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2298
2299         iob = (struct qeth_cmd_buffer *) data;
2300         memcpy(&card->token.ulp_filter_r,
2301                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2302                QETH_MPC_TOKEN_LENGTH);
2303         if (card->info.type == QETH_CARD_TYPE_IQD) {
2304                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2305                 mtu = qeth_get_mtu_outof_framesize(framesize);
2306                 if (!mtu) {
2307                         iob->rc = -EINVAL;
2308                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2309                         return 0;
2310                 }
2311                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2312                         /* frame size has changed */
2313                         if (card->dev &&
2314                             ((card->dev->mtu == card->info.initial_mtu) ||
2315                              (card->dev->mtu > mtu)))
2316                                 card->dev->mtu = mtu;
2317                         qeth_free_qdio_buffers(card);
2318                 }
2319                 card->info.initial_mtu = mtu;
2320                 card->info.max_mtu = mtu;
2321                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2322         } else {
2323                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2324                         iob->data);
2325                 card->info.initial_mtu = min(card->info.max_mtu,
2326                                         qeth_get_initial_mtu_for_card(card));
2327                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2328         }
2329
2330         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2331         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2332                 memcpy(&link_type,
2333                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2334                 card->info.link_type = link_type;
2335         } else
2336                 card->info.link_type = 0;
2337         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2338         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2339         return 0;
2340 }
2341
2342 static int qeth_ulp_enable(struct qeth_card *card)
2343 {
2344         int rc;
2345         char prot_type;
2346         struct qeth_cmd_buffer *iob;
2347
2348         /*FIXME: trace view callbacks*/
2349         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2350
2351         iob = qeth_wait_for_buffer(&card->write);
2352         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2353
2354         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2355                 (__u8) card->info.portno;
2356         if (card->options.layer2)
2357                 if (card->info.type == QETH_CARD_TYPE_OSN)
2358                         prot_type = QETH_PROT_OSN2;
2359                 else
2360                         prot_type = QETH_PROT_LAYER2;
2361         else
2362                 prot_type = QETH_PROT_TCPIP;
2363
2364         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2365         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2366                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2367         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2368                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2369         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2370                                     qeth_ulp_enable_cb, NULL);
2371         return rc;
2372
2373 }
2374
2375 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2376                 unsigned long data)
2377 {
2378         struct qeth_cmd_buffer *iob;
2379
2380         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2381
2382         iob = (struct qeth_cmd_buffer *) data;
2383         memcpy(&card->token.ulp_connection_r,
2384                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2385                QETH_MPC_TOKEN_LENGTH);
2386         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2387                      3)) {
2388                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2389                 dev_err(&card->gdev->dev, "A connection could not be "
2390                         "established because of an OLM limit\n");
2391                 iob->rc = -EMLINK;
2392         }
2393         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2394         return 0;
2395 }
2396
2397 static int qeth_ulp_setup(struct qeth_card *card)
2398 {
2399         int rc;
2400         __u16 temp;
2401         struct qeth_cmd_buffer *iob;
2402         struct ccw_dev_id dev_id;
2403
2404         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2405
2406         iob = qeth_wait_for_buffer(&card->write);
2407         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2408
2409         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2410                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2411         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2412                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2413         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2414                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2415
2416         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2417         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2418         temp = (card->info.cula << 8) + card->info.unit_addr2;
2419         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2420         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2421                                     qeth_ulp_setup_cb, NULL);
2422         return rc;
2423 }
2424
2425 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2426 {
2427         int rc;
2428         struct qeth_qdio_out_buffer *newbuf;
2429
2430         rc = 0;
2431         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2432         if (!newbuf) {
2433                 rc = -ENOMEM;
2434                 goto out;
2435         }
2436         newbuf->buffer = q->qdio_bufs[bidx];
2437         skb_queue_head_init(&newbuf->skb_list);
2438         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2439         newbuf->q = q;
2440         newbuf->aob = NULL;
2441         newbuf->next_pending = q->bufs[bidx];
2442         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2443         q->bufs[bidx] = newbuf;
2444         if (q->bufstates) {
2445                 q->bufstates[bidx].user = newbuf;
2446                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2447                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2448                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2449                                 (long) newbuf->next_pending);
2450         }
2451 out:
2452         return rc;
2453 }
2454
2455 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2456 {
2457         if (!q)
2458                 return;
2459
2460         qeth_clear_outq_buffers(q, 1);
2461         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2462         kfree(q);
2463 }
2464
2465 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2466 {
2467         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2468
2469         if (!q)
2470                 return NULL;
2471
2472         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2473                 kfree(q);
2474                 return NULL;
2475         }
2476         return q;
2477 }
2478
2479 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2480 {
2481         int i, j;
2482
2483         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2484
2485         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2486                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2487                 return 0;
2488
2489         QETH_DBF_TEXT(SETUP, 2, "inq");
2490         card->qdio.in_q = qeth_alloc_qdio_queue();
2491         if (!card->qdio.in_q)
2492                 goto out_nomem;
2493
2494         /* inbound buffer pool */
2495         if (qeth_alloc_buffer_pool(card))
2496                 goto out_freeinq;
2497
2498         /* outbound */
2499         card->qdio.out_qs =
2500                 kzalloc(card->qdio.no_out_queues *
2501                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2502         if (!card->qdio.out_qs)
2503                 goto out_freepool;
2504         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2505                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2506                 if (!card->qdio.out_qs[i])
2507                         goto out_freeoutq;
2508                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2509                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2510                 card->qdio.out_qs[i]->queue_no = i;
2511                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2512                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2513                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2514                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2515                                 goto out_freeoutqbufs;
2516                 }
2517         }
2518
2519         /* completion */
2520         if (qeth_alloc_cq(card))
2521                 goto out_freeoutq;
2522
2523         return 0;
2524
2525 out_freeoutqbufs:
2526         while (j > 0) {
2527                 --j;
2528                 kmem_cache_free(qeth_qdio_outbuf_cache,
2529                                 card->qdio.out_qs[i]->bufs[j]);
2530                 card->qdio.out_qs[i]->bufs[j] = NULL;
2531         }
2532 out_freeoutq:
2533         while (i > 0)
2534                 qeth_free_output_queue(card->qdio.out_qs[--i]);
2535         kfree(card->qdio.out_qs);
2536         card->qdio.out_qs = NULL;
2537 out_freepool:
2538         qeth_free_buffer_pool(card);
2539 out_freeinq:
2540         qeth_free_qdio_queue(card->qdio.in_q);
2541         card->qdio.in_q = NULL;
2542 out_nomem:
2543         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2544         return -ENOMEM;
2545 }
2546
2547 static void qeth_free_qdio_buffers(struct qeth_card *card)
2548 {
2549         int i, j;
2550
2551         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2552                 QETH_QDIO_UNINITIALIZED)
2553                 return;
2554
2555         qeth_free_cq(card);
2556         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2557         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2558                 if (card->qdio.in_q->bufs[j].rx_skb)
2559                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2560         }
2561         qeth_free_qdio_queue(card->qdio.in_q);
2562         card->qdio.in_q = NULL;
2563         /* inbound buffer pool */
2564         qeth_free_buffer_pool(card);
2565         /* free outbound qdio_qs */
2566         if (card->qdio.out_qs) {
2567                 for (i = 0; i < card->qdio.no_out_queues; i++)
2568                         qeth_free_output_queue(card->qdio.out_qs[i]);
2569                 kfree(card->qdio.out_qs);
2570                 card->qdio.out_qs = NULL;
2571         }
2572 }
2573
2574 static void qeth_create_qib_param_field(struct qeth_card *card,
2575                 char *param_field)
2576 {
2577
2578         param_field[0] = _ascebc['P'];
2579         param_field[1] = _ascebc['C'];
2580         param_field[2] = _ascebc['I'];
2581         param_field[3] = _ascebc['T'];
2582         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2583         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2584         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2585 }
2586
2587 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2588                 char *param_field)
2589 {
2590         param_field[16] = _ascebc['B'];
2591         param_field[17] = _ascebc['L'];
2592         param_field[18] = _ascebc['K'];
2593         param_field[19] = _ascebc['T'];
2594         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2595         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2596         *((unsigned int *) (&param_field[28])) =
2597                 card->info.blkt.inter_packet_jumbo;
2598 }
2599
2600 static int qeth_qdio_activate(struct qeth_card *card)
2601 {
2602         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2603         return qdio_activate(CARD_DDEV(card));
2604 }
2605
2606 static int qeth_dm_act(struct qeth_card *card)
2607 {
2608         int rc;
2609         struct qeth_cmd_buffer *iob;
2610
2611         QETH_DBF_TEXT(SETUP, 2, "dmact");
2612
2613         iob = qeth_wait_for_buffer(&card->write);
2614         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2615
2616         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2617                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2618         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2619                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2620         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2621         return rc;
2622 }
2623
2624 static int qeth_mpc_initialize(struct qeth_card *card)
2625 {
2626         int rc;
2627
2628         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2629
2630         rc = qeth_issue_next_read(card);
2631         if (rc) {
2632                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2633                 return rc;
2634         }
2635         rc = qeth_cm_enable(card);
2636         if (rc) {
2637                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2638                 goto out_qdio;
2639         }
2640         rc = qeth_cm_setup(card);
2641         if (rc) {
2642                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2643                 goto out_qdio;
2644         }
2645         rc = qeth_ulp_enable(card);
2646         if (rc) {
2647                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2648                 goto out_qdio;
2649         }
2650         rc = qeth_ulp_setup(card);
2651         if (rc) {
2652                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2653                 goto out_qdio;
2654         }
2655         rc = qeth_alloc_qdio_buffers(card);
2656         if (rc) {
2657                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2658                 goto out_qdio;
2659         }
2660         rc = qeth_qdio_establish(card);
2661         if (rc) {
2662                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2663                 qeth_free_qdio_buffers(card);
2664                 goto out_qdio;
2665         }
2666         rc = qeth_qdio_activate(card);
2667         if (rc) {
2668                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2669                 goto out_qdio;
2670         }
2671         rc = qeth_dm_act(card);
2672         if (rc) {
2673                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2674                 goto out_qdio;
2675         }
2676
2677         return 0;
2678 out_qdio:
2679         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2680         qdio_free(CARD_DDEV(card));
2681         return rc;
2682 }
2683
2684 void qeth_print_status_message(struct qeth_card *card)
2685 {
2686         switch (card->info.type) {
2687         case QETH_CARD_TYPE_OSD:
2688         case QETH_CARD_TYPE_OSM:
2689         case QETH_CARD_TYPE_OSX:
2690                 /* VM will use a non-zero first character
2691                  * to indicate a HiperSockets like reporting
2692                  * of the level OSA sets the first character to zero
2693                  * */
2694                 if (!card->info.mcl_level[0]) {
2695                         sprintf(card->info.mcl_level, "%02x%02x",
2696                                 card->info.mcl_level[2],
2697                                 card->info.mcl_level[3]);
2698
2699                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2700                         break;
2701                 }
2702                 /* fallthrough */
2703         case QETH_CARD_TYPE_IQD:
2704                 if ((card->info.guestlan) ||
2705                     (card->info.mcl_level[0] & 0x80)) {
2706                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2707                                 card->info.mcl_level[0]];
2708                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2709                                 card->info.mcl_level[1]];
2710                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2711                                 card->info.mcl_level[2]];
2712                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2713                                 card->info.mcl_level[3]];
2714                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2715                 }
2716                 break;
2717         default:
2718                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2719         }
2720         dev_info(&card->gdev->dev,
2721                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2722                  qeth_get_cardname(card),
2723                  (card->info.mcl_level[0]) ? " (level: " : "",
2724                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2725                  (card->info.mcl_level[0]) ? ")" : "",
2726                  qeth_get_cardname_short(card));
2727 }
2728 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2729
2730 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2731 {
2732         struct qeth_buffer_pool_entry *entry;
2733
2734         QETH_CARD_TEXT(card, 5, "inwrklst");
2735
2736         list_for_each_entry(entry,
2737                             &card->qdio.init_pool.entry_list, init_list) {
2738                 qeth_put_buffer_pool_entry(card, entry);
2739         }
2740 }
2741
2742 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2743                 struct qeth_card *card)
2744 {
2745         struct list_head *plh;
2746         struct qeth_buffer_pool_entry *entry;
2747         int i, free;
2748         struct page *page;
2749
2750         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2751                 return NULL;
2752
2753         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2754                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2755                 free = 1;
2756                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2757                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2758                                 free = 0;
2759                                 break;
2760                         }
2761                 }
2762                 if (free) {
2763                         list_del_init(&entry->list);
2764                         return entry;
2765                 }
2766         }
2767
2768         /* no free buffer in pool so take first one and swap pages */
2769         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2770                         struct qeth_buffer_pool_entry, list);
2771         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2772                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2773                         page = alloc_page(GFP_ATOMIC);
2774                         if (!page) {
2775                                 return NULL;
2776                         } else {
2777                                 free_page((unsigned long)entry->elements[i]);
2778                                 entry->elements[i] = page_address(page);
2779                                 if (card->options.performance_stats)
2780                                         card->perf_stats.sg_alloc_page_rx++;
2781                         }
2782                 }
2783         }
2784         list_del_init(&entry->list);
2785         return entry;
2786 }
2787
2788 static int qeth_init_input_buffer(struct qeth_card *card,
2789                 struct qeth_qdio_buffer *buf)
2790 {
2791         struct qeth_buffer_pool_entry *pool_entry;
2792         int i;
2793
2794         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2795                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2796                 if (!buf->rx_skb)
2797                         return 1;
2798         }
2799
2800         pool_entry = qeth_find_free_buffer_pool_entry(card);
2801         if (!pool_entry)
2802                 return 1;
2803
2804         /*
2805          * since the buffer is accessed only from the input_tasklet
2806          * there shouldn't be a need to synchronize; also, since we use
2807          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2808          * buffers
2809          */
2810
2811         buf->pool_entry = pool_entry;
2812         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2813                 buf->buffer->element[i].length = PAGE_SIZE;
2814                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2815                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2816                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2817                 else
2818                         buf->buffer->element[i].eflags = 0;
2819                 buf->buffer->element[i].sflags = 0;
2820         }
2821         return 0;
2822 }
2823
2824 int qeth_init_qdio_queues(struct qeth_card *card)
2825 {
2826         int i, j;
2827         int rc;
2828
2829         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2830
2831         /* inbound queue */
2832         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2833                            QDIO_MAX_BUFFERS_PER_Q);
2834         qeth_initialize_working_pool_list(card);
2835         /*give only as many buffers to hardware as we have buffer pool entries*/
2836         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2837                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2838         card->qdio.in_q->next_buf_to_init =
2839                 card->qdio.in_buf_pool.buf_count - 1;
2840         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2841                      card->qdio.in_buf_pool.buf_count - 1);
2842         if (rc) {
2843                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2844                 return rc;
2845         }
2846
2847         /* completion */
2848         rc = qeth_cq_init(card);
2849         if (rc) {
2850                 return rc;
2851         }
2852
2853         /* outbound queue */
2854         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2855                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2856                                    QDIO_MAX_BUFFERS_PER_Q);
2857                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2858                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2859                                         card->qdio.out_qs[i]->bufs[j],
2860                                         QETH_QDIO_BUF_EMPTY);
2861                 }
2862                 card->qdio.out_qs[i]->card = card;
2863                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2864                 card->qdio.out_qs[i]->do_pack = 0;
2865                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2866                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2867                 atomic_set(&card->qdio.out_qs[i]->state,
2868                            QETH_OUT_Q_UNLOCKED);
2869         }
2870         return 0;
2871 }
2872 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2873
2874 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2875 {
2876         switch (link_type) {
2877         case QETH_LINK_TYPE_HSTR:
2878                 return 2;
2879         default:
2880                 return 1;
2881         }
2882 }
2883
2884 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2885                 struct qeth_ipa_cmd *cmd, __u8 command,
2886                 enum qeth_prot_versions prot)
2887 {
2888         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2889         cmd->hdr.command = command;
2890         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2891         /* cmd->hdr.seqno is set by qeth_send_control_data() */
2892         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2893         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2894         if (card->options.layer2)
2895                 cmd->hdr.prim_version_no = 2;
2896         else
2897                 cmd->hdr.prim_version_no = 1;
2898         cmd->hdr.param_count = 1;
2899         cmd->hdr.prot_version = prot;
2900         cmd->hdr.ipa_supported = 0;
2901         cmd->hdr.ipa_enabled = 0;
2902 }
2903
2904 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2905                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2906 {
2907         struct qeth_cmd_buffer *iob;
2908         struct qeth_ipa_cmd *cmd;
2909
2910         iob = qeth_get_buffer(&card->write);
2911         if (iob) {
2912                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2913                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2914         } else {
2915                 dev_warn(&card->gdev->dev,
2916                          "The qeth driver ran out of channel command buffers\n");
2917                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2918                                  dev_name(&card->gdev->dev));
2919         }
2920
2921         return iob;
2922 }
2923 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2924
2925 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2926                 char prot_type)
2927 {
2928         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2929         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2930         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2931                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2934
2935 /**
2936  * qeth_send_ipa_cmd() - send an IPA command
2937  *
2938  * See qeth_send_control_data() for explanation of the arguments.
2939  */
2940
2941 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2942                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2943                         unsigned long),
2944                 void *reply_param)
2945 {
2946         int rc;
2947         char prot_type;
2948
2949         QETH_CARD_TEXT(card, 4, "sendipa");
2950
2951         if (card->options.layer2)
2952                 if (card->info.type == QETH_CARD_TYPE_OSN)
2953                         prot_type = QETH_PROT_OSN2;
2954                 else
2955                         prot_type = QETH_PROT_LAYER2;
2956         else
2957                 prot_type = QETH_PROT_TCPIP;
2958         qeth_prepare_ipa_cmd(card, iob, prot_type);
2959         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2960                                                 iob, reply_cb, reply_param);
2961         if (rc == -ETIME) {
2962                 qeth_clear_ipacmd_list(card);
2963                 qeth_schedule_recovery(card);
2964         }
2965         return rc;
2966 }
2967 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2968
2969 static int qeth_send_startlan(struct qeth_card *card)
2970 {
2971         int rc;
2972         struct qeth_cmd_buffer *iob;
2973
2974         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2975
2976         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2977         if (!iob)
2978                 return -ENOMEM;
2979         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2980         return rc;
2981 }
2982
2983 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2984                 struct qeth_reply *reply, unsigned long data)
2985 {
2986         struct qeth_ipa_cmd *cmd;
2987
2988         QETH_CARD_TEXT(card, 4, "defadpcb");
2989
2990         cmd = (struct qeth_ipa_cmd *) data;
2991         if (cmd->hdr.return_code == 0)
2992                 cmd->hdr.return_code =
2993                         cmd->data.setadapterparms.hdr.return_code;
2994         return 0;
2995 }
2996
2997 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2998                 struct qeth_reply *reply, unsigned long data)
2999 {
3000         struct qeth_ipa_cmd *cmd;
3001
3002         QETH_CARD_TEXT(card, 3, "quyadpcb");
3003
3004         cmd = (struct qeth_ipa_cmd *) data;
3005         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3006                 card->info.link_type =
3007                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3008                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3009         }
3010         card->options.adp.supported_funcs =
3011                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3012         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3013 }
3014
3015 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3016                 __u32 command, __u32 cmdlen)
3017 {
3018         struct qeth_cmd_buffer *iob;
3019         struct qeth_ipa_cmd *cmd;
3020
3021         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3022                                      QETH_PROT_IPV4);
3023         if (iob) {
3024                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3025                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3026                 cmd->data.setadapterparms.hdr.command_code = command;
3027                 cmd->data.setadapterparms.hdr.used_total = 1;
3028                 cmd->data.setadapterparms.hdr.seq_no = 1;
3029         }
3030
3031         return iob;
3032 }
3033
3034 int qeth_query_setadapterparms(struct qeth_card *card)
3035 {
3036         int rc;
3037         struct qeth_cmd_buffer *iob;
3038
3039         QETH_CARD_TEXT(card, 3, "queryadp");
3040         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3041                                    sizeof(struct qeth_ipacmd_setadpparms));
3042         if (!iob)
3043                 return -ENOMEM;
3044         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3045         return rc;
3046 }
3047 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3048
3049 static int qeth_query_ipassists_cb(struct qeth_card *card,
3050                 struct qeth_reply *reply, unsigned long data)
3051 {
3052         struct qeth_ipa_cmd *cmd;
3053
3054         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3055
3056         cmd = (struct qeth_ipa_cmd *) data;
3057
3058         switch (cmd->hdr.return_code) {
3059         case IPA_RC_NOTSUPP:
3060         case IPA_RC_L2_UNSUPPORTED_CMD:
3061                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3062                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3063                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3064                 return -0;
3065         default:
3066                 if (cmd->hdr.return_code) {
3067                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3068                                                 "rc=%d\n",
3069                                                 dev_name(&card->gdev->dev),
3070                                                 cmd->hdr.return_code);
3071                         return 0;
3072                 }
3073         }
3074
3075         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3076                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3077                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3078         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3079                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3080                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3081         } else
3082                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3083                                         "\n", dev_name(&card->gdev->dev));
3084         return 0;
3085 }
3086
3087 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3088 {
3089         int rc;
3090         struct qeth_cmd_buffer *iob;
3091
3092         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3093         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3094         if (!iob)
3095                 return -ENOMEM;
3096         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3097         return rc;
3098 }
3099 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3100
3101 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3102                                 struct qeth_reply *reply, unsigned long data)
3103 {
3104         struct qeth_ipa_cmd *cmd;
3105         struct qeth_switch_info *sw_info;
3106         struct qeth_query_switch_attributes *attrs;
3107
3108         QETH_CARD_TEXT(card, 2, "qswiatcb");
3109         cmd = (struct qeth_ipa_cmd *) data;
3110         sw_info = (struct qeth_switch_info *)reply->param;
3111         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3112                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3113                 sw_info->capabilities = attrs->capabilities;
3114                 sw_info->settings = attrs->settings;
3115                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3116                                                         sw_info->settings);
3117         }
3118         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3119
3120         return 0;
3121 }
3122
3123 int qeth_query_switch_attributes(struct qeth_card *card,
3124                                  struct qeth_switch_info *sw_info)
3125 {
3126         struct qeth_cmd_buffer *iob;
3127
3128         QETH_CARD_TEXT(card, 2, "qswiattr");
3129         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3130                 return -EOPNOTSUPP;
3131         if (!netif_carrier_ok(card->dev))
3132                 return -ENOMEDIUM;
3133         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3134                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3135         if (!iob)
3136                 return -ENOMEM;
3137         return qeth_send_ipa_cmd(card, iob,
3138                                 qeth_query_switch_attributes_cb, sw_info);
3139 }
3140 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3141
3142 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3143                 struct qeth_reply *reply, unsigned long data)
3144 {
3145         struct qeth_ipa_cmd *cmd;
3146         __u16 rc;
3147
3148         cmd = (struct qeth_ipa_cmd *)data;
3149         rc = cmd->hdr.return_code;
3150         if (rc)
3151                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3152         else
3153                 card->info.diagass_support = cmd->data.diagass.ext;
3154         return 0;
3155 }
3156
3157 static int qeth_query_setdiagass(struct qeth_card *card)
3158 {
3159         struct qeth_cmd_buffer *iob;
3160         struct qeth_ipa_cmd    *cmd;
3161
3162         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3163         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3164         if (!iob)
3165                 return -ENOMEM;
3166         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3167         cmd->data.diagass.subcmd_len = 16;
3168         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3169         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3170 }
3171
3172 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3173 {
3174         unsigned long info = get_zeroed_page(GFP_KERNEL);
3175         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3176         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3177         struct ccw_dev_id ccwid;
3178         int level;
3179
3180         tid->chpid = card->info.chpid;
3181         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3182         tid->ssid = ccwid.ssid;
3183         tid->devno = ccwid.devno;
3184         if (!info)
3185                 return;
3186         level = stsi(NULL, 0, 0, 0);
3187         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3188                 tid->lparnr = info222->lpar_number;
3189         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3190                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3191                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3192         }
3193         free_page(info);
3194         return;
3195 }
3196
3197 static int qeth_hw_trap_cb(struct qeth_card *card,
3198                 struct qeth_reply *reply, unsigned long data)
3199 {
3200         struct qeth_ipa_cmd *cmd;
3201         __u16 rc;
3202
3203         cmd = (struct qeth_ipa_cmd *)data;
3204         rc = cmd->hdr.return_code;
3205         if (rc)
3206                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3207         return 0;
3208 }
3209
3210 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3211 {
3212         struct qeth_cmd_buffer *iob;
3213         struct qeth_ipa_cmd *cmd;
3214
3215         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3216         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3217         if (!iob)
3218                 return -ENOMEM;
3219         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3220         cmd->data.diagass.subcmd_len = 80;
3221         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3222         cmd->data.diagass.type = 1;
3223         cmd->data.diagass.action = action;
3224         switch (action) {
3225         case QETH_DIAGS_TRAP_ARM:
3226                 cmd->data.diagass.options = 0x0003;
3227                 cmd->data.diagass.ext = 0x00010000 +
3228                         sizeof(struct qeth_trap_id);
3229                 qeth_get_trap_id(card,
3230                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3231                 break;
3232         case QETH_DIAGS_TRAP_DISARM:
3233                 cmd->data.diagass.options = 0x0001;
3234                 break;
3235         case QETH_DIAGS_TRAP_CAPTURE:
3236                 break;
3237         }
3238         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3239 }
3240 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3241
3242 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3243                 unsigned int qdio_error, const char *dbftext)
3244 {
3245         if (qdio_error) {
3246                 QETH_CARD_TEXT(card, 2, dbftext);
3247                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3248                                buf->element[15].sflags);
3249                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3250                                buf->element[14].sflags);
3251                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3252                 if ((buf->element[15].sflags) == 0x12) {
3253                         card->stats.rx_dropped++;
3254                         return 0;
3255                 } else
3256                         return 1;
3257         }
3258         return 0;
3259 }
3260 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3261
3262 static void qeth_buffer_reclaim_work(struct work_struct *work)
3263 {
3264         struct qeth_card *card = container_of(work, struct qeth_card,
3265                 buffer_reclaim_work.work);
3266
3267         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3268         qeth_queue_input_buffer(card, card->reclaim_index);
3269 }
3270
3271 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3272 {
3273         struct qeth_qdio_q *queue = card->qdio.in_q;
3274         struct list_head *lh;
3275         int count;
3276         int i;
3277         int rc;
3278         int newcount = 0;
3279
3280         count = (index < queue->next_buf_to_init)?
3281                 card->qdio.in_buf_pool.buf_count -
3282                 (queue->next_buf_to_init - index) :
3283                 card->qdio.in_buf_pool.buf_count -
3284                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3285         /* only requeue at a certain threshold to avoid SIGAs */
3286         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3287                 for (i = queue->next_buf_to_init;
3288                      i < queue->next_buf_to_init + count; ++i) {
3289                         if (qeth_init_input_buffer(card,
3290                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3291                                 break;
3292                         } else {
3293                                 newcount++;
3294                         }
3295                 }
3296
3297                 if (newcount < count) {
3298                         /* we are in memory shortage so we switch back to
3299                            traditional skb allocation and drop packages */
3300                         atomic_set(&card->force_alloc_skb, 3);
3301                         count = newcount;
3302                 } else {
3303                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3304                 }
3305
3306                 if (!count) {
3307                         i = 0;
3308                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3309                                 i++;
3310                         if (i == card->qdio.in_buf_pool.buf_count) {
3311                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3312                                 card->reclaim_index = index;
3313                                 schedule_delayed_work(
3314                                         &card->buffer_reclaim_work,
3315                                         QETH_RECLAIM_WORK_TIME);
3316                         }
3317                         return;
3318                 }
3319
3320                 /*
3321                  * according to old code it should be avoided to requeue all
3322                  * 128 buffers in order to benefit from PCI avoidance.
3323                  * this function keeps at least one buffer (the buffer at
3324                  * 'index') un-requeued -> this buffer is the first buffer that
3325                  * will be requeued the next time
3326                  */
3327                 if (card->options.performance_stats) {
3328                         card->perf_stats.inbound_do_qdio_cnt++;
3329                         card->perf_stats.inbound_do_qdio_start_time =
3330                                 qeth_get_micros();
3331                 }
3332                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3333                              queue->next_buf_to_init, count);
3334                 if (card->options.performance_stats)
3335                         card->perf_stats.inbound_do_qdio_time +=
3336                                 qeth_get_micros() -
3337                                 card->perf_stats.inbound_do_qdio_start_time;
3338                 if (rc) {
3339                         QETH_CARD_TEXT(card, 2, "qinberr");
3340                 }
3341                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3342                                           QDIO_MAX_BUFFERS_PER_Q;
3343         }
3344 }
3345 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3346
3347 static int qeth_handle_send_error(struct qeth_card *card,
3348                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3349 {
3350         int sbalf15 = buffer->buffer->element[15].sflags;
3351
3352         QETH_CARD_TEXT(card, 6, "hdsnderr");
3353         if (card->info.type == QETH_CARD_TYPE_IQD) {
3354                 if (sbalf15 == 0) {
3355                         qdio_err = 0;
3356                 } else {
3357                         qdio_err = 1;
3358                 }
3359         }
3360         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3361
3362         if (!qdio_err)
3363                 return QETH_SEND_ERROR_NONE;
3364
3365         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3366                 return QETH_SEND_ERROR_RETRY;
3367
3368         QETH_CARD_TEXT(card, 1, "lnkfail");
3369         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3370                        (u16)qdio_err, (u8)sbalf15);
3371         return QETH_SEND_ERROR_LINK_FAILURE;
3372 }
3373
3374 /*
3375  * Switched to packing state if the number of used buffers on a queue
3376  * reaches a certain limit.
3377  */
3378 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3379 {
3380         if (!queue->do_pack) {
3381                 if (atomic_read(&queue->used_buffers)
3382                     >= QETH_HIGH_WATERMARK_PACK){
3383                         /* switch non-PACKING -> PACKING */
3384                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3385                         if (queue->card->options.performance_stats)
3386                                 queue->card->perf_stats.sc_dp_p++;
3387                         queue->do_pack = 1;
3388                 }
3389         }
3390 }
3391
3392 /*
3393  * Switches from packing to non-packing mode. If there is a packing
3394  * buffer on the queue this buffer will be prepared to be flushed.
3395  * In that case 1 is returned to inform the caller. If no buffer
3396  * has to be flushed, zero is returned.
3397  */
3398 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3399 {
3400         struct qeth_qdio_out_buffer *buffer;
3401         int flush_count = 0;
3402
3403         if (queue->do_pack) {
3404                 if (atomic_read(&queue->used_buffers)
3405                     <= QETH_LOW_WATERMARK_PACK) {
3406                         /* switch PACKING -> non-PACKING */
3407                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3408                         if (queue->card->options.performance_stats)
3409                                 queue->card->perf_stats.sc_p_dp++;
3410                         queue->do_pack = 0;
3411                         /* flush packing buffers */
3412                         buffer = queue->bufs[queue->next_buf_to_fill];
3413                         if ((atomic_read(&buffer->state) ==
3414                                                 QETH_QDIO_BUF_EMPTY) &&
3415                             (buffer->next_element_to_fill > 0)) {
3416                                 atomic_set(&buffer->state,
3417                                            QETH_QDIO_BUF_PRIMED);
3418                                 flush_count++;
3419                                 queue->next_buf_to_fill =
3420                                         (queue->next_buf_to_fill + 1) %
3421                                         QDIO_MAX_BUFFERS_PER_Q;
3422                         }
3423                 }
3424         }
3425         return flush_count;
3426 }
3427
3428
3429 /*
3430  * Called to flush a packing buffer if no more pci flags are on the queue.
3431  * Checks if there is a packing buffer and prepares it to be flushed.
3432  * In that case returns 1, otherwise zero.
3433  */
3434 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3435 {
3436         struct qeth_qdio_out_buffer *buffer;
3437
3438         buffer = queue->bufs[queue->next_buf_to_fill];
3439         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3440            (buffer->next_element_to_fill > 0)) {
3441                 /* it's a packing buffer */
3442                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3443                 queue->next_buf_to_fill =
3444                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3445                 return 1;
3446         }
3447         return 0;
3448 }
3449
3450 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3451                                int count)
3452 {
3453         struct qeth_qdio_out_buffer *buf;
3454         int rc;
3455         int i;
3456         unsigned int qdio_flags;
3457
3458         for (i = index; i < index + count; ++i) {
3459                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3460                 buf = queue->bufs[bidx];
3461                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3462                                 SBAL_EFLAGS_LAST_ENTRY;
3463
3464                 if (queue->bufstates)
3465                         queue->bufstates[bidx].user = buf;
3466
3467                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3468                         continue;
3469
3470                 if (!queue->do_pack) {
3471                         if ((atomic_read(&queue->used_buffers) >=
3472                                 (QETH_HIGH_WATERMARK_PACK -
3473                                  QETH_WATERMARK_PACK_FUZZ)) &&
3474                             !atomic_read(&queue->set_pci_flags_count)) {
3475                                 /* it's likely that we'll go to packing
3476                                  * mode soon */
3477                                 atomic_inc(&queue->set_pci_flags_count);
3478                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3479                         }
3480                 } else {
3481                         if (!atomic_read(&queue->set_pci_flags_count)) {
3482                                 /*
3483                                  * there's no outstanding PCI any more, so we
3484                                  * have to request a PCI to be sure the the PCI
3485                                  * will wake at some time in the future then we
3486                                  * can flush packed buffers that might still be
3487                                  * hanging around, which can happen if no
3488                                  * further send was requested by the stack
3489                                  */
3490                                 atomic_inc(&queue->set_pci_flags_count);
3491                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3492                         }
3493                 }
3494         }
3495
3496         queue->card->dev->trans_start = jiffies;
3497         if (queue->card->options.performance_stats) {
3498                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3499                 queue->card->perf_stats.outbound_do_qdio_start_time =
3500                         qeth_get_micros();
3501         }
3502         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3503         if (atomic_read(&queue->set_pci_flags_count))
3504                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3505         atomic_add(count, &queue->used_buffers);
3506
3507         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3508                      queue->queue_no, index, count);
3509         if (queue->card->options.performance_stats)
3510                 queue->card->perf_stats.outbound_do_qdio_time +=
3511                         qeth_get_micros() -
3512                         queue->card->perf_stats.outbound_do_qdio_start_time;
3513         if (rc) {
3514                 queue->card->stats.tx_errors += count;
3515                 /* ignore temporary SIGA errors without busy condition */
3516                 if (rc == -ENOBUFS)
3517                         return;
3518                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3519                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3520                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3521                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3522                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3523
3524                 /* this must not happen under normal circumstances. if it
3525                  * happens something is really wrong -> recover */
3526                 qeth_schedule_recovery(queue->card);
3527                 return;
3528         }
3529         if (queue->card->options.performance_stats)
3530                 queue->card->perf_stats.bufs_sent += count;
3531 }
3532
3533 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3534 {
3535         int index;
3536         int flush_cnt = 0;
3537         int q_was_packing = 0;
3538
3539         /*
3540          * check if weed have to switch to non-packing mode or if
3541          * we have to get a pci flag out on the queue
3542          */
3543         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3544             !atomic_read(&queue->set_pci_flags_count)) {
3545                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3546                                 QETH_OUT_Q_UNLOCKED) {
3547                         /*
3548                          * If we get in here, there was no action in
3549                          * do_send_packet. So, we check if there is a
3550                          * packing buffer to be flushed here.
3551                          */
3552                         netif_stop_queue(queue->card->dev);
3553                         index = queue->next_buf_to_fill;
3554                         q_was_packing = queue->do_pack;
3555                         /* queue->do_pack may change */
3556                         barrier();
3557                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3558                         if (!flush_cnt &&
3559                             !atomic_read(&queue->set_pci_flags_count))
3560                                 flush_cnt +=
3561                                         qeth_flush_buffers_on_no_pci(queue);
3562                         if (queue->card->options.performance_stats &&
3563                             q_was_packing)
3564                                 queue->card->perf_stats.bufs_sent_pack +=
3565                                         flush_cnt;
3566                         if (flush_cnt)
3567                                 qeth_flush_buffers(queue, index, flush_cnt);
3568                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3569                 }
3570         }
3571 }
3572
3573 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3574                 unsigned long card_ptr)
3575 {
3576         struct qeth_card *card = (struct qeth_card *)card_ptr;
3577
3578         if (card->dev && (card->dev->flags & IFF_UP))
3579                 napi_schedule(&card->napi);
3580 }
3581 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3582
3583 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3584 {
3585         int rc;
3586
3587         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3588                 rc = -1;
3589                 goto out;
3590         } else {
3591                 if (card->options.cq == cq) {
3592                         rc = 0;
3593                         goto out;
3594                 }
3595
3596                 if (card->state != CARD_STATE_DOWN &&
3597                     card->state != CARD_STATE_RECOVER) {
3598                         rc = -1;
3599                         goto out;
3600                 }
3601
3602                 qeth_free_qdio_buffers(card);
3603                 card->options.cq = cq;
3604                 rc = 0;
3605         }
3606 out:
3607         return rc;
3608
3609 }
3610 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3611
3612
3613 static void qeth_qdio_cq_handler(struct qeth_card *card,
3614                 unsigned int qdio_err,
3615                 unsigned int queue, int first_element, int count) {
3616         struct qeth_qdio_q *cq = card->qdio.c_q;
3617         int i;
3618         int rc;
3619
3620         if (!qeth_is_cq(card, queue))
3621                 goto out;
3622
3623         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3624         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3625         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3626
3627         if (qdio_err) {
3628                 netif_stop_queue(card->dev);
3629                 qeth_schedule_recovery(card);
3630                 goto out;
3631         }
3632
3633         if (card->options.performance_stats) {
3634                 card->perf_stats.cq_cnt++;
3635                 card->perf_stats.cq_start_time = qeth_get_micros();
3636         }
3637
3638         for (i = first_element; i < first_element + count; ++i) {
3639                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3640                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3641                 int e;
3642
3643                 e = 0;
3644                 while (buffer->element[e].addr) {
3645                         unsigned long phys_aob_addr;
3646
3647                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3648                         qeth_qdio_handle_aob(card, phys_aob_addr);
3649                         buffer->element[e].addr = NULL;
3650                         buffer->element[e].eflags = 0;
3651                         buffer->element[e].sflags = 0;
3652                         buffer->element[e].length = 0;
3653
3654                         ++e;
3655                 }
3656
3657                 buffer->element[15].eflags = 0;
3658                 buffer->element[15].sflags = 0;
3659         }
3660         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3661                     card->qdio.c_q->next_buf_to_init,
3662                     count);
3663         if (rc) {
3664                 dev_warn(&card->gdev->dev,
3665                         "QDIO reported an error, rc=%i\n", rc);
3666                 QETH_CARD_TEXT(card, 2, "qcqherr");
3667         }
3668         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3669                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3670
3671         netif_wake_queue(card->dev);
3672
3673         if (card->options.performance_stats) {
3674                 int delta_t = qeth_get_micros();
3675                 delta_t -= card->perf_stats.cq_start_time;
3676                 card->perf_stats.cq_time += delta_t;
3677         }
3678 out:
3679         return;
3680 }
3681
3682 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3683                 unsigned int queue, int first_elem, int count,
3684                 unsigned long card_ptr)
3685 {
3686         struct qeth_card *card = (struct qeth_card *)card_ptr;
3687
3688         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3689         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3690
3691         if (qeth_is_cq(card, queue))
3692                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3693         else if (qdio_err)
3694                 qeth_schedule_recovery(card);
3695
3696
3697 }
3698 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3699
3700 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3701                 unsigned int qdio_error, int __queue, int first_element,
3702                 int count, unsigned long card_ptr)
3703 {
3704         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3705         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3706         struct qeth_qdio_out_buffer *buffer;
3707         int i;
3708
3709         QETH_CARD_TEXT(card, 6, "qdouhdl");
3710         if (qdio_error & QDIO_ERROR_FATAL) {
3711                 QETH_CARD_TEXT(card, 2, "achkcond");
3712                 netif_stop_queue(card->dev);
3713                 qeth_schedule_recovery(card);
3714                 return;
3715         }
3716         if (card->options.performance_stats) {
3717                 card->perf_stats.outbound_handler_cnt++;
3718                 card->perf_stats.outbound_handler_start_time =
3719                         qeth_get_micros();
3720         }
3721         for (i = first_element; i < (first_element + count); ++i) {
3722                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3723                 buffer = queue->bufs[bidx];
3724                 qeth_handle_send_error(card, buffer, qdio_error);
3725
3726                 if (queue->bufstates &&
3727                     (queue->bufstates[bidx].flags &
3728                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3729                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3730
3731                         if (atomic_cmpxchg(&buffer->state,
3732                                            QETH_QDIO_BUF_PRIMED,
3733                                            QETH_QDIO_BUF_PENDING) ==
3734                                 QETH_QDIO_BUF_PRIMED) {
3735                                 qeth_notify_skbs(queue, buffer,
3736                                                  TX_NOTIFY_PENDING);
3737                         }
3738                         buffer->aob = queue->bufstates[bidx].aob;
3739                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3740                         QETH_CARD_TEXT(queue->card, 5, "aob");
3741                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3742                                         virt_to_phys(buffer->aob));
3743                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3744                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3745                                 qeth_schedule_recovery(card);
3746                         }
3747                 } else {
3748                         if (card->options.cq == QETH_CQ_ENABLED) {
3749                                 enum iucv_tx_notify n;
3750
3751                                 n = qeth_compute_cq_notification(
3752                                         buffer->buffer->element[15].sflags, 0);
3753                                 qeth_notify_skbs(queue, buffer, n);
3754                         }
3755
3756                         qeth_clear_output_buffer(queue, buffer,
3757                                                 QETH_QDIO_BUF_EMPTY);
3758                 }
3759                 qeth_cleanup_handled_pending(queue, bidx, 0);
3760         }
3761         atomic_sub(count, &queue->used_buffers);
3762         /* check if we need to do something on this outbound queue */
3763         if (card->info.type != QETH_CARD_TYPE_IQD)
3764                 qeth_check_outbound_queue(queue);
3765
3766         netif_wake_queue(queue->card->dev);
3767         if (card->options.performance_stats)
3768                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3769                         card->perf_stats.outbound_handler_start_time;
3770 }
3771 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3772
3773 /**
3774  * Note: Function assumes that we have 4 outbound queues.
3775  */
3776 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3777                         int ipv, int cast_type)
3778 {
3779         __be16 *tci;
3780         u8 tos;
3781
3782         if (cast_type && card->info.is_multicast_different)
3783                 return card->info.is_multicast_different &
3784                         (card->qdio.no_out_queues - 1);
3785
3786         switch (card->qdio.do_prio_queueing) {
3787         case QETH_PRIO_Q_ING_TOS:
3788         case QETH_PRIO_Q_ING_PREC:
3789                 switch (ipv) {
3790                 case 4:
3791                         tos = ipv4_get_dsfield(ip_hdr(skb));
3792                         break;
3793                 case 6:
3794                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3795                         break;
3796                 default:
3797                         return card->qdio.default_out_queue;
3798                 }
3799                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3800                         return ~tos >> 6 & 3;
3801                 if (tos & IPTOS_MINCOST)
3802                         return 3;
3803                 if (tos & IPTOS_RELIABILITY)
3804                         return 2;
3805                 if (tos & IPTOS_THROUGHPUT)
3806                         return 1;
3807                 if (tos & IPTOS_LOWDELAY)
3808                         return 0;
3809                 break;
3810         case QETH_PRIO_Q_ING_SKB:
3811                 if (skb->priority > 5)
3812                         return 0;
3813                 return ~skb->priority >> 1 & 3;
3814         case QETH_PRIO_Q_ING_VLAN:
3815                 tci = &((struct ethhdr *)skb->data)->h_proto;
3816                 if (*tci == ETH_P_8021Q)
3817                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3818                 break;
3819         default:
3820                 break;
3821         }
3822         return card->qdio.default_out_queue;
3823 }
3824 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3825
3826 int qeth_get_elements_for_frags(struct sk_buff *skb)
3827 {
3828         int cnt, length, e, elements = 0;
3829         struct skb_frag_struct *frag;
3830         char *data;
3831
3832         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3833                 frag = &skb_shinfo(skb)->frags[cnt];
3834                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3835                         frag->page_offset;
3836                 length = frag->size;
3837                 e = PFN_UP((unsigned long)data + length - 1) -
3838                         PFN_DOWN((unsigned long)data);
3839                 elements += e;
3840         }
3841         return elements;
3842 }
3843 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3844
3845 int qeth_get_elements_no(struct qeth_card *card,
3846                      struct sk_buff *skb, int elems)
3847 {
3848         int dlen = skb->len - skb->data_len;
3849         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3850                 PFN_DOWN((unsigned long)skb->data);
3851
3852         elements_needed += qeth_get_elements_for_frags(skb);
3853
3854         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3855                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3856                         "(Number=%d / Length=%d). Discarded.\n",
3857                         (elements_needed+elems), skb->len);
3858                 return 0;
3859         }
3860         return elements_needed;
3861 }
3862 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3863
3864 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3865 {
3866         int hroom, inpage, rest;
3867
3868         if (((unsigned long)skb->data & PAGE_MASK) !=
3869             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3870                 hroom = skb_headroom(skb);
3871                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3872                 rest = len - inpage;
3873                 if (rest > hroom)
3874                         return 1;
3875                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3876                 skb->data -= rest;
3877                 skb->tail -= rest;
3878                 *hdr = (struct qeth_hdr *)skb->data;
3879                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3880         }
3881         return 0;
3882 }
3883 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3884
3885 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3886         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3887         int offset)
3888 {
3889         int length = skb->len - skb->data_len;
3890         int length_here;
3891         int element;
3892         char *data;
3893         int first_lap, cnt;
3894         struct skb_frag_struct *frag;
3895
3896         element = *next_element_to_fill;
3897         data = skb->data;
3898         first_lap = (is_tso == 0 ? 1 : 0);
3899
3900         if (offset >= 0) {
3901                 data = skb->data + offset;
3902                 length -= offset;
3903                 first_lap = 0;
3904         }
3905
3906         while (length > 0) {
3907                 /* length_here is the remaining amount of data in this page */
3908                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3909                 if (length < length_here)
3910                         length_here = length;
3911
3912                 buffer->element[element].addr = data;
3913                 buffer->element[element].length = length_here;
3914                 length -= length_here;
3915                 if (!length) {
3916                         if (first_lap)
3917                                 if (skb_shinfo(skb)->nr_frags)
3918                                         buffer->element[element].eflags =
3919                                                 SBAL_EFLAGS_FIRST_FRAG;
3920                                 else
3921                                         buffer->element[element].eflags = 0;
3922                         else
3923                                 buffer->element[element].eflags =
3924                                     SBAL_EFLAGS_MIDDLE_FRAG;
3925                 } else {
3926                         if (first_lap)
3927                                 buffer->element[element].eflags =
3928                                     SBAL_EFLAGS_FIRST_FRAG;
3929                         else
3930                                 buffer->element[element].eflags =
3931                                     SBAL_EFLAGS_MIDDLE_FRAG;
3932                 }
3933                 data += length_here;
3934                 element++;
3935                 first_lap = 0;
3936         }
3937
3938         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3939                 frag = &skb_shinfo(skb)->frags[cnt];
3940                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3941                         frag->page_offset;
3942                 length = frag->size;
3943                 while (length > 0) {
3944                         length_here = PAGE_SIZE -
3945                                 ((unsigned long) data % PAGE_SIZE);
3946                         if (length < length_here)
3947                                 length_here = length;
3948
3949                         buffer->element[element].addr = data;
3950                         buffer->element[element].length = length_here;
3951                         buffer->element[element].eflags =
3952                                 SBAL_EFLAGS_MIDDLE_FRAG;
3953                         length -= length_here;
3954                         data += length_here;
3955                         element++;
3956                 }
3957         }
3958
3959         if (buffer->element[element - 1].eflags)
3960                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3961         *next_element_to_fill = element;
3962 }
3963
3964 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3965                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3966                 struct qeth_hdr *hdr, int offset, int hd_len)
3967 {
3968         struct qdio_buffer *buffer;
3969         int flush_cnt = 0, hdr_len, large_send = 0;
3970
3971         buffer = buf->buffer;
3972         atomic_inc(&skb->users);
3973         skb_queue_tail(&buf->skb_list, skb);
3974
3975         /*check first on TSO ....*/
3976         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3977                 int element = buf->next_element_to_fill;
3978
3979                 hdr_len = sizeof(struct qeth_hdr_tso) +
3980                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3981                 /*fill first buffer entry only with header information */
3982                 buffer->element[element].addr = skb->data;
3983                 buffer->element[element].length = hdr_len;
3984                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3985                 buf->next_element_to_fill++;
3986                 skb->data += hdr_len;
3987                 skb->len  -= hdr_len;
3988                 large_send = 1;
3989         }
3990
3991         if (offset >= 0) {
3992                 int element = buf->next_element_to_fill;
3993                 buffer->element[element].addr = hdr;
3994                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3995                                                         hd_len;
3996                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3997                 buf->is_header[element] = 1;
3998                 buf->next_element_to_fill++;
3999         }
4000
4001         __qeth_fill_buffer(skb, buffer, large_send,
4002                 (int *)&buf->next_element_to_fill, offset);
4003
4004         if (!queue->do_pack) {
4005                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4006                 /* set state to PRIMED -> will be flushed */
4007                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4008                 flush_cnt = 1;
4009         } else {
4010                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4011                 if (queue->card->options.performance_stats)
4012                         queue->card->perf_stats.skbs_sent_pack++;
4013                 if (buf->next_element_to_fill >=
4014                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4015                         /*
4016                          * packed buffer if full -> set state PRIMED
4017                          * -> will be flushed
4018                          */
4019                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4020                         flush_cnt = 1;
4021                 }
4022         }
4023         return flush_cnt;
4024 }
4025
4026 int qeth_do_send_packet_fast(struct qeth_card *card,
4027                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4028                 struct qeth_hdr *hdr, int elements_needed,
4029                 int offset, int hd_len)
4030 {
4031         struct qeth_qdio_out_buffer *buffer;
4032         int index;
4033
4034         /* spin until we get the queue ... */
4035         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4036                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4037         /* ... now we've got the queue */
4038         index = queue->next_buf_to_fill;
4039         buffer = queue->bufs[queue->next_buf_to_fill];
4040         /*
4041          * check if buffer is empty to make sure that we do not 'overtake'
4042          * ourselves and try to fill a buffer that is already primed
4043          */
4044         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4045                 goto out;
4046         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4047                                           QDIO_MAX_BUFFERS_PER_Q;
4048         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4049         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4050         qeth_flush_buffers(queue, index, 1);
4051         return 0;
4052 out:
4053         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4054         return -EBUSY;
4055 }
4056 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4057
4058 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4059                 struct sk_buff *skb, struct qeth_hdr *hdr,
4060                 int elements_needed)
4061 {
4062         struct qeth_qdio_out_buffer *buffer;
4063         int start_index;
4064         int flush_count = 0;
4065         int do_pack = 0;
4066         int tmp;
4067         int rc = 0;
4068
4069         /* spin until we get the queue ... */
4070         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4071                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4072         start_index = queue->next_buf_to_fill;
4073         buffer = queue->bufs[queue->next_buf_to_fill];
4074         /*
4075          * check if buffer is empty to make sure that we do not 'overtake'
4076          * ourselves and try to fill a buffer that is already primed
4077          */
4078         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4079                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4080                 return -EBUSY;
4081         }
4082         /* check if we need to switch packing state of this queue */
4083         qeth_switch_to_packing_if_needed(queue);
4084         if (queue->do_pack) {
4085                 do_pack = 1;
4086                 /* does packet fit in current buffer? */
4087                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4088                     buffer->next_element_to_fill) < elements_needed) {
4089                         /* ... no -> set state PRIMED */
4090                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4091                         flush_count++;
4092                         queue->next_buf_to_fill =
4093                                 (queue->next_buf_to_fill + 1) %
4094                                 QDIO_MAX_BUFFERS_PER_Q;
4095                         buffer = queue->bufs[queue->next_buf_to_fill];
4096                         /* we did a step forward, so check buffer state
4097                          * again */
4098                         if (atomic_read(&buffer->state) !=
4099                             QETH_QDIO_BUF_EMPTY) {
4100                                 qeth_flush_buffers(queue, start_index,
4101                                                            flush_count);
4102                                 atomic_set(&queue->state,
4103                                                 QETH_OUT_Q_UNLOCKED);
4104                                 return -EBUSY;
4105                         }
4106                 }
4107         }
4108         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4109         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4110                                   QDIO_MAX_BUFFERS_PER_Q;
4111         flush_count += tmp;
4112         if (flush_count)
4113                 qeth_flush_buffers(queue, start_index, flush_count);
4114         else if (!atomic_read(&queue->set_pci_flags_count))
4115                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4116         /*
4117          * queue->state will go from LOCKED -> UNLOCKED or from
4118          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4119          * (switch packing state or flush buffer to get another pci flag out).
4120          * In that case we will enter this loop
4121          */
4122         while (atomic_dec_return(&queue->state)) {
4123                 flush_count = 0;
4124                 start_index = queue->next_buf_to_fill;
4125                 /* check if we can go back to non-packing state */
4126                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4127                 /*
4128                  * check if we need to flush a packing buffer to get a pci
4129                  * flag out on the queue
4130                  */
4131                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4132                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4133                 if (flush_count)
4134                         qeth_flush_buffers(queue, start_index, flush_count);
4135         }
4136         /* at this point the queue is UNLOCKED again */
4137         if (queue->card->options.performance_stats && do_pack)
4138                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4139
4140         return rc;
4141 }
4142 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4143
4144 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4145                 struct qeth_reply *reply, unsigned long data)
4146 {
4147         struct qeth_ipa_cmd *cmd;
4148         struct qeth_ipacmd_setadpparms *setparms;
4149
4150         QETH_CARD_TEXT(card, 4, "prmadpcb");
4151
4152         cmd = (struct qeth_ipa_cmd *) data;
4153         setparms = &(cmd->data.setadapterparms);
4154
4155         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4156         if (cmd->hdr.return_code) {
4157                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4158                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4159         }
4160         card->info.promisc_mode = setparms->data.mode;
4161         return 0;
4162 }
4163
4164 void qeth_setadp_promisc_mode(struct qeth_card *card)
4165 {
4166         enum qeth_ipa_promisc_modes mode;
4167         struct net_device *dev = card->dev;
4168         struct qeth_cmd_buffer *iob;
4169         struct qeth_ipa_cmd *cmd;
4170
4171         QETH_CARD_TEXT(card, 4, "setprom");
4172
4173         if (((dev->flags & IFF_PROMISC) &&
4174              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4175             (!(dev->flags & IFF_PROMISC) &&
4176              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4177                 return;
4178         mode = SET_PROMISC_MODE_OFF;
4179         if (dev->flags & IFF_PROMISC)
4180                 mode = SET_PROMISC_MODE_ON;
4181         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4182
4183         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4184                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4185         if (!iob)
4186                 return;
4187         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4188         cmd->data.setadapterparms.data.mode = mode;
4189         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4190 }
4191 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4192
4193 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4194 {
4195         struct qeth_card *card;
4196         char dbf_text[15];
4197
4198         card = dev->ml_priv;
4199
4200         QETH_CARD_TEXT(card, 4, "chgmtu");
4201         sprintf(dbf_text, "%8x", new_mtu);
4202         QETH_CARD_TEXT(card, 4, dbf_text);
4203
4204         if (new_mtu < 64)
4205                 return -EINVAL;
4206         if (new_mtu > 65535)
4207                 return -EINVAL;
4208         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4209             (!qeth_mtu_is_valid(card, new_mtu)))
4210                 return -EINVAL;
4211         dev->mtu = new_mtu;
4212         return 0;
4213 }
4214 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4215
4216 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4217 {
4218         struct qeth_card *card;
4219
4220         card = dev->ml_priv;
4221
4222         QETH_CARD_TEXT(card, 5, "getstat");
4223
4224         return &card->stats;
4225 }
4226 EXPORT_SYMBOL_GPL(qeth_get_stats);
4227
4228 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4229                 struct qeth_reply *reply, unsigned long data)
4230 {
4231         struct qeth_ipa_cmd *cmd;
4232
4233         QETH_CARD_TEXT(card, 4, "chgmaccb");
4234
4235         cmd = (struct qeth_ipa_cmd *) data;
4236         if (!card->options.layer2 ||
4237             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4238                 memcpy(card->dev->dev_addr,
4239                        &cmd->data.setadapterparms.data.change_addr.addr,
4240                        OSA_ADDR_LEN);
4241                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4242         }
4243         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4244         return 0;
4245 }
4246
4247 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4248 {
4249         int rc;
4250         struct qeth_cmd_buffer *iob;
4251         struct qeth_ipa_cmd *cmd;
4252
4253         QETH_CARD_TEXT(card, 4, "chgmac");
4254
4255         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4256                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4257                                    sizeof(struct qeth_change_addr));
4258         if (!iob)
4259                 return -ENOMEM;
4260         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4261         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4262         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4263         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4264                card->dev->dev_addr, OSA_ADDR_LEN);
4265         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4266                                NULL);
4267         return rc;
4268 }
4269 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4270
4271 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4272                 struct qeth_reply *reply, unsigned long data)
4273 {
4274         struct qeth_ipa_cmd *cmd;
4275         struct qeth_set_access_ctrl *access_ctrl_req;
4276         int fallback = *(int *)reply->param;
4277
4278         QETH_CARD_TEXT(card, 4, "setaccb");
4279
4280         cmd = (struct qeth_ipa_cmd *) data;
4281         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4282         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4283         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4284         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4285                 cmd->data.setadapterparms.hdr.return_code);
4286         if (cmd->data.setadapterparms.hdr.return_code !=
4287                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4288                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4289                                 card->gdev->dev.kobj.name,
4290                                 access_ctrl_req->subcmd_code,
4291                                 cmd->data.setadapterparms.hdr.return_code);
4292         switch (cmd->data.setadapterparms.hdr.return_code) {
4293         case SET_ACCESS_CTRL_RC_SUCCESS:
4294                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4295                         dev_info(&card->gdev->dev,
4296                             "QDIO data connection isolation is deactivated\n");
4297                 } else {
4298                         dev_info(&card->gdev->dev,
4299                             "QDIO data connection isolation is activated\n");
4300                 }
4301                 break;
4302         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4303                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4304                                 "deactivated\n", dev_name(&card->gdev->dev));
4305                 if (fallback)
4306                         card->options.isolation = card->options.prev_isolation;
4307                 break;
4308         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4309                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4310                                 " activated\n", dev_name(&card->gdev->dev));
4311                 if (fallback)
4312                         card->options.isolation = card->options.prev_isolation;
4313                 break;
4314         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4315                 dev_err(&card->gdev->dev, "Adapter does not "
4316                         "support QDIO data connection isolation\n");
4317                 break;
4318         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4319                 dev_err(&card->gdev->dev,
4320                         "Adapter is dedicated. "
4321                         "QDIO data connection isolation not supported\n");
4322                 if (fallback)
4323                         card->options.isolation = card->options.prev_isolation;
4324                 break;
4325         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4326                 dev_err(&card->gdev->dev,
4327                         "TSO does not permit QDIO data connection isolation\n");
4328                 if (fallback)
4329                         card->options.isolation = card->options.prev_isolation;
4330                 break;
4331         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4332                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4333                         "support reflective relay mode\n");
4334                 if (fallback)
4335                         card->options.isolation = card->options.prev_isolation;
4336                 break;
4337         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4338                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4339                                         "enabled at the adjacent switch port");
4340                 if (fallback)
4341                         card->options.isolation = card->options.prev_isolation;
4342                 break;
4343         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4344                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4345                                         "at the adjacent switch failed\n");
4346                 break;
4347         default:
4348                 /* this should never happen */
4349                 if (fallback)
4350                         card->options.isolation = card->options.prev_isolation;
4351                 break;
4352         }
4353         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4354         return 0;
4355 }
4356
4357 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4358                 enum qeth_ipa_isolation_modes isolation, int fallback)
4359 {
4360         int rc;
4361         struct qeth_cmd_buffer *iob;
4362         struct qeth_ipa_cmd *cmd;
4363         struct qeth_set_access_ctrl *access_ctrl_req;
4364
4365         QETH_CARD_TEXT(card, 4, "setacctl");
4366
4367         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4368         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4369
4370         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4371                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4372                                    sizeof(struct qeth_set_access_ctrl));
4373         if (!iob)
4374                 return -ENOMEM;
4375         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4376         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4377         access_ctrl_req->subcmd_code = isolation;
4378
4379         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4380                                &fallback);
4381         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4382         return rc;
4383 }
4384
4385 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4386 {
4387         int rc = 0;
4388
4389         QETH_CARD_TEXT(card, 4, "setactlo");
4390
4391         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4392              card->info.type == QETH_CARD_TYPE_OSX) &&
4393              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4394                 rc = qeth_setadpparms_set_access_ctrl(card,
4395                         card->options.isolation, fallback);
4396                 if (rc) {
4397                         QETH_DBF_MESSAGE(3,
4398                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4399                                 card->gdev->dev.kobj.name,
4400                                 rc);
4401                         rc = -EOPNOTSUPP;
4402                 }
4403         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4404                 card->options.isolation = ISOLATION_MODE_NONE;
4405
4406                 dev_err(&card->gdev->dev, "Adapter does not "
4407                         "support QDIO data connection isolation\n");
4408                 rc = -EOPNOTSUPP;
4409         }
4410         return rc;
4411 }
4412 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4413
4414 void qeth_tx_timeout(struct net_device *dev)
4415 {
4416         struct qeth_card *card;
4417
4418         card = dev->ml_priv;
4419         QETH_CARD_TEXT(card, 4, "txtimeo");
4420         card->stats.tx_errors++;
4421         qeth_schedule_recovery(card);
4422 }
4423 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4424
4425 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4426 {
4427         struct qeth_card *card = dev->ml_priv;
4428         int rc = 0;
4429
4430         switch (regnum) {
4431         case MII_BMCR: /* Basic mode control register */
4432                 rc = BMCR_FULLDPLX;
4433                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4434                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4435                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4436                         rc |= BMCR_SPEED100;
4437                 break;
4438         case MII_BMSR: /* Basic mode status register */
4439                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4440                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4441                      BMSR_100BASE4;
4442                 break;
4443         case MII_PHYSID1: /* PHYS ID 1 */
4444                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4445                      dev->dev_addr[2];
4446                 rc = (rc >> 5) & 0xFFFF;
4447                 break;
4448         case MII_PHYSID2: /* PHYS ID 2 */
4449                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4450                 break;
4451         case MII_ADVERTISE: /* Advertisement control reg */
4452                 rc = ADVERTISE_ALL;
4453                 break;
4454         case MII_LPA: /* Link partner ability reg */
4455                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4456                      LPA_100BASE4 | LPA_LPACK;
4457                 break;
4458         case MII_EXPANSION: /* Expansion register */
4459                 break;
4460         case MII_DCOUNTER: /* disconnect counter */
4461                 break;
4462         case MII_FCSCOUNTER: /* false carrier counter */
4463                 break;
4464         case MII_NWAYTEST: /* N-way auto-neg test register */
4465                 break;
4466         case MII_RERRCOUNTER: /* rx error counter */
4467                 rc = card->stats.rx_errors;
4468                 break;
4469         case MII_SREVISION: /* silicon revision */
4470                 break;
4471         case MII_RESV1: /* reserved 1 */
4472                 break;
4473         case MII_LBRERROR: /* loopback, rx, bypass error */
4474                 break;
4475         case MII_PHYADDR: /* physical address */
4476                 break;
4477         case MII_RESV2: /* reserved 2 */
4478                 break;
4479         case MII_TPISTATUS: /* TPI status for 10mbps */
4480                 break;
4481         case MII_NCONFIG: /* network interface config */
4482                 break;
4483         default:
4484                 break;
4485         }
4486         return rc;
4487 }
4488 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4489
4490 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4491                 struct qeth_cmd_buffer *iob, int len,
4492                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4493                         unsigned long),
4494                 void *reply_param)
4495 {
4496         u16 s1, s2;
4497
4498         QETH_CARD_TEXT(card, 4, "sendsnmp");
4499
4500         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4501         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4502                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4503         /* adjust PDU length fields in IPA_PDU_HEADER */
4504         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4505         s2 = (u32) len;
4506         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4507         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4508         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4509         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4510         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4511                                       reply_cb, reply_param);
4512 }
4513
4514 static int qeth_snmp_command_cb(struct qeth_card *card,
4515                 struct qeth_reply *reply, unsigned long sdata)
4516 {
4517         struct qeth_ipa_cmd *cmd;
4518         struct qeth_arp_query_info *qinfo;
4519         unsigned char *data;
4520         void *snmp_data;
4521         __u16 data_len;
4522
4523         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4524
4525         cmd = (struct qeth_ipa_cmd *) sdata;
4526         data = (unsigned char *)((char *)cmd - reply->offset);
4527         qinfo = (struct qeth_arp_query_info *) reply->param;
4528
4529         if (cmd->hdr.return_code) {
4530                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4531                 return 0;
4532         }
4533         if (cmd->data.setadapterparms.hdr.return_code) {
4534                 cmd->hdr.return_code =
4535                         cmd->data.setadapterparms.hdr.return_code;
4536                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4537                 return 0;
4538         }
4539         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4540         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4541                 snmp_data = &cmd->data.setadapterparms.data.snmp;
4542                 data_len -= offsetof(struct qeth_ipa_cmd,
4543                                      data.setadapterparms.data.snmp);
4544         } else {
4545                 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4546                 data_len -= offsetof(struct qeth_ipa_cmd,
4547                                      data.setadapterparms.data.snmp.request);
4548         }
4549
4550         /* check if there is enough room in userspace */
4551         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4552                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4553                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4554                 return 0;
4555         }
4556         QETH_CARD_TEXT_(card, 4, "snore%i",
4557                        cmd->data.setadapterparms.hdr.used_total);
4558         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4559                 cmd->data.setadapterparms.hdr.seq_no);
4560         /*copy entries to user buffer*/
4561         memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4562         qinfo->udata_offset += data_len;
4563
4564         /* check if all replies received ... */
4565                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4566                                cmd->data.setadapterparms.hdr.used_total);
4567                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4568                                cmd->data.setadapterparms.hdr.seq_no);
4569         if (cmd->data.setadapterparms.hdr.seq_no <
4570             cmd->data.setadapterparms.hdr.used_total)
4571                 return 1;
4572         return 0;
4573 }
4574
4575 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4576 {
4577         struct qeth_cmd_buffer *iob;
4578         struct qeth_ipa_cmd *cmd;
4579         struct qeth_snmp_ureq *ureq;
4580         unsigned int req_len;
4581         struct qeth_arp_query_info qinfo = {0, };
4582         int rc = 0;
4583
4584         QETH_CARD_TEXT(card, 3, "snmpcmd");
4585
4586         if (card->info.guestlan)
4587                 return -EOPNOTSUPP;
4588
4589         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4590             (!card->options.layer2)) {
4591                 return -EOPNOTSUPP;
4592         }
4593         /* skip 4 bytes (data_len struct member) to get req_len */
4594         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4595                 return -EFAULT;
4596         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4597                        sizeof(struct qeth_ipacmd_hdr) -
4598                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4599                 return -EINVAL;
4600         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4601         if (IS_ERR(ureq)) {
4602                 QETH_CARD_TEXT(card, 2, "snmpnome");
4603                 return PTR_ERR(ureq);
4604         }
4605         qinfo.udata_len = ureq->hdr.data_len;
4606         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4607         if (!qinfo.udata) {
4608                 kfree(ureq);
4609                 return -ENOMEM;
4610         }
4611         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4612
4613         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4614                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4615         if (!iob) {
4616                 rc = -ENOMEM;
4617                 goto out;
4618         }
4619         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4620         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4621         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4622                                     qeth_snmp_command_cb, (void *)&qinfo);
4623         if (rc)
4624                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4625                            QETH_CARD_IFNAME(card), rc);
4626         else {
4627                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4628                         rc = -EFAULT;
4629         }
4630 out:
4631         kfree(ureq);
4632         kfree(qinfo.udata);
4633         return rc;
4634 }
4635 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4636
4637 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4638                 struct qeth_reply *reply, unsigned long data)
4639 {
4640         struct qeth_ipa_cmd *cmd;
4641         struct qeth_qoat_priv *priv;
4642         char *resdata;
4643         int resdatalen;
4644
4645         QETH_CARD_TEXT(card, 3, "qoatcb");
4646
4647         cmd = (struct qeth_ipa_cmd *)data;
4648         priv = (struct qeth_qoat_priv *)reply->param;
4649         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4650         resdata = (char *)data + 28;
4651
4652         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4653                 cmd->hdr.return_code = IPA_RC_FFFF;
4654                 return 0;
4655         }
4656
4657         memcpy((priv->buffer + priv->response_len), resdata,
4658                 resdatalen);
4659         priv->response_len += resdatalen;
4660
4661         if (cmd->data.setadapterparms.hdr.seq_no <
4662             cmd->data.setadapterparms.hdr.used_total)
4663                 return 1;
4664         return 0;
4665 }
4666
4667 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4668 {
4669         int rc = 0;
4670         struct qeth_cmd_buffer *iob;
4671         struct qeth_ipa_cmd *cmd;
4672         struct qeth_query_oat *oat_req;
4673         struct qeth_query_oat_data oat_data;
4674         struct qeth_qoat_priv priv;
4675         void __user *tmp;
4676
4677         QETH_CARD_TEXT(card, 3, "qoatcmd");
4678
4679         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4680                 rc = -EOPNOTSUPP;
4681                 goto out;
4682         }
4683
4684         if (copy_from_user(&oat_data, udata,
4685             sizeof(struct qeth_query_oat_data))) {
4686                         rc = -EFAULT;
4687                         goto out;
4688         }
4689
4690         priv.buffer_len = oat_data.buffer_len;
4691         priv.response_len = 0;
4692         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4693         if (!priv.buffer) {
4694                 rc = -ENOMEM;
4695                 goto out;
4696         }
4697
4698         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4699                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4700                                    sizeof(struct qeth_query_oat));
4701         if (!iob) {
4702                 rc = -ENOMEM;
4703                 goto out_free;
4704         }
4705         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4706         oat_req = &cmd->data.setadapterparms.data.query_oat;
4707         oat_req->subcmd_code = oat_data.command;
4708
4709         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4710                                &priv);
4711         if (!rc) {
4712                 if (is_compat_task())
4713                         tmp = compat_ptr(oat_data.ptr);
4714                 else
4715                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4716
4717                 if (copy_to_user(tmp, priv.buffer,
4718                     priv.response_len)) {
4719                         rc = -EFAULT;
4720                         goto out_free;
4721                 }
4722
4723                 oat_data.response_len = priv.response_len;
4724
4725                 if (copy_to_user(udata, &oat_data,
4726                     sizeof(struct qeth_query_oat_data)))
4727                         rc = -EFAULT;
4728         } else
4729                 if (rc == IPA_RC_FFFF)
4730                         rc = -EFAULT;
4731
4732 out_free:
4733         kfree(priv.buffer);
4734 out:
4735         return rc;
4736 }
4737 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4738
4739 static int qeth_query_card_info_cb(struct qeth_card *card,
4740                                    struct qeth_reply *reply, unsigned long data)
4741 {
4742         struct qeth_ipa_cmd *cmd;
4743         struct qeth_query_card_info *card_info;
4744         struct carrier_info *carrier_info;
4745
4746         QETH_CARD_TEXT(card, 2, "qcrdincb");
4747         carrier_info = (struct carrier_info *)reply->param;
4748         cmd = (struct qeth_ipa_cmd *)data;
4749         card_info = &cmd->data.setadapterparms.data.card_info;
4750         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4751                 carrier_info->card_type = card_info->card_type;
4752                 carrier_info->port_mode = card_info->port_mode;
4753                 carrier_info->port_speed = card_info->port_speed;
4754         }
4755
4756         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4757         return 0;
4758 }
4759
4760 static int qeth_query_card_info(struct qeth_card *card,
4761                                 struct carrier_info *carrier_info)
4762 {
4763         struct qeth_cmd_buffer *iob;
4764
4765         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4766         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4767                 return -EOPNOTSUPP;
4768         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4769                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4770         if (!iob)
4771                 return -ENOMEM;
4772         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4773                                         (void *)carrier_info);
4774 }
4775
4776 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4777 {
4778         switch (card->info.type) {
4779         case QETH_CARD_TYPE_IQD:
4780                 return 2;
4781         default:
4782                 return 0;
4783         }
4784 }
4785
4786 static void qeth_determine_capabilities(struct qeth_card *card)
4787 {
4788         int rc;
4789         int length;
4790         char *prcd;
4791         struct ccw_device *ddev;
4792         int ddev_offline = 0;
4793
4794         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4795         ddev = CARD_DDEV(card);
4796         if (!ddev->online) {
4797                 ddev_offline = 1;
4798                 rc = ccw_device_set_online(ddev);
4799                 if (rc) {
4800                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4801                         goto out;
4802                 }
4803         }
4804
4805         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4806         if (rc) {
4807                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4808                         dev_name(&card->gdev->dev), rc);
4809                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4810                 goto out_offline;
4811         }
4812         qeth_configure_unitaddr(card, prcd);
4813         if (ddev_offline)
4814                 qeth_configure_blkt_default(card, prcd);
4815         kfree(prcd);
4816
4817         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4818         if (rc)
4819                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4820
4821         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4822         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4823         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4824         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4825         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4826             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4827             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4828                 dev_info(&card->gdev->dev,
4829                         "Completion Queueing supported\n");
4830         } else {
4831                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4832         }
4833
4834
4835 out_offline:
4836         if (ddev_offline == 1)
4837                 ccw_device_set_offline(ddev);
4838 out:
4839         return;
4840 }
4841
4842 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4843         struct qdio_buffer **in_sbal_ptrs,
4844         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4845         int i;
4846
4847         if (card->options.cq == QETH_CQ_ENABLED) {
4848                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4849                              (card->qdio.no_in_queues - 1);
4850                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4851                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4852                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4853                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4854                 }
4855
4856                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4857         }
4858 }
4859
4860 static int qeth_qdio_establish(struct qeth_card *card)
4861 {
4862         struct qdio_initialize init_data;
4863         char *qib_param_field;
4864         struct qdio_buffer **in_sbal_ptrs;
4865         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4866         struct qdio_buffer **out_sbal_ptrs;
4867         int i, j, k;
4868         int rc = 0;
4869
4870         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4871
4872         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4873                               GFP_KERNEL);
4874         if (!qib_param_field) {
4875                 rc =  -ENOMEM;
4876                 goto out_free_nothing;
4877         }
4878
4879         qeth_create_qib_param_field(card, qib_param_field);
4880         qeth_create_qib_param_field_blkt(card, qib_param_field);
4881
4882         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4883                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4884                                GFP_KERNEL);
4885         if (!in_sbal_ptrs) {
4886                 rc = -ENOMEM;
4887                 goto out_free_qib_param;
4888         }
4889         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4890                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4891                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4892         }
4893
4894         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4895                                    GFP_KERNEL);
4896         if (!queue_start_poll) {
4897                 rc = -ENOMEM;
4898                 goto out_free_in_sbals;
4899         }
4900         for (i = 0; i < card->qdio.no_in_queues; ++i)
4901                 queue_start_poll[i] = card->discipline->start_poll;
4902
4903         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4904
4905         out_sbal_ptrs =
4906                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4907                         sizeof(void *), GFP_KERNEL);
4908         if (!out_sbal_ptrs) {
4909                 rc = -ENOMEM;
4910                 goto out_free_queue_start_poll;
4911         }
4912         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4913                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4914                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4915                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4916                 }
4917
4918         memset(&init_data, 0, sizeof(struct qdio_initialize));
4919         init_data.cdev                   = CARD_DDEV(card);
4920         init_data.q_format               = qeth_get_qdio_q_format(card);
4921         init_data.qib_param_field_format = 0;
4922         init_data.qib_param_field        = qib_param_field;
4923         init_data.no_input_qs            = card->qdio.no_in_queues;
4924         init_data.no_output_qs           = card->qdio.no_out_queues;
4925         init_data.input_handler          = card->discipline->input_handler;
4926         init_data.output_handler         = card->discipline->output_handler;
4927         init_data.queue_start_poll_array = queue_start_poll;
4928         init_data.int_parm               = (unsigned long) card;
4929         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4930         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4931         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4932         init_data.scan_threshold =
4933                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4934
4935         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4936                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4937                 rc = qdio_allocate(&init_data);
4938                 if (rc) {
4939                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4940                         goto out;
4941                 }
4942                 rc = qdio_establish(&init_data);
4943                 if (rc) {
4944                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4945                         qdio_free(CARD_DDEV(card));
4946                 }
4947         }
4948
4949         switch (card->options.cq) {
4950         case QETH_CQ_ENABLED:
4951                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4952                 break;
4953         case QETH_CQ_DISABLED:
4954                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4955                 break;
4956         default:
4957                 break;
4958         }
4959 out:
4960         kfree(out_sbal_ptrs);
4961 out_free_queue_start_poll:
4962         kfree(queue_start_poll);
4963 out_free_in_sbals:
4964         kfree(in_sbal_ptrs);
4965 out_free_qib_param:
4966         kfree(qib_param_field);
4967 out_free_nothing:
4968         return rc;
4969 }
4970
4971 static void qeth_core_free_card(struct qeth_card *card)
4972 {
4973
4974         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4975         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4976         qeth_clean_channel(&card->read);
4977         qeth_clean_channel(&card->write);
4978         kfree(card->ip_tbd_list);
4979         qeth_free_qdio_buffers(card);
4980         unregister_service_level(&card->qeth_service_level);
4981         kfree(card);
4982 }
4983
4984 void qeth_trace_features(struct qeth_card *card)
4985 {
4986         QETH_CARD_TEXT(card, 2, "features");
4987         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4988         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4989         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4990         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4991                       sizeof(card->info.diagass_support));
4992 }
4993 EXPORT_SYMBOL_GPL(qeth_trace_features);
4994
4995 static struct ccw_device_id qeth_ids[] = {
4996         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4997                                         .driver_info = QETH_CARD_TYPE_OSD},
4998         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4999                                         .driver_info = QETH_CARD_TYPE_IQD},
5000         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5001                                         .driver_info = QETH_CARD_TYPE_OSN},
5002         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5003                                         .driver_info = QETH_CARD_TYPE_OSM},
5004         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5005                                         .driver_info = QETH_CARD_TYPE_OSX},
5006         {},
5007 };
5008 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5009
5010 static struct ccw_driver qeth_ccw_driver = {
5011         .driver = {
5012                 .owner = THIS_MODULE,
5013                 .name = "qeth",
5014         },
5015         .ids = qeth_ids,
5016         .probe = ccwgroup_probe_ccwdev,
5017         .remove = ccwgroup_remove_ccwdev,
5018 };
5019
5020 int qeth_core_hardsetup_card(struct qeth_card *card)
5021 {
5022         int retries = 3;
5023         int rc;
5024
5025         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5026         atomic_set(&card->force_alloc_skb, 0);
5027         qeth_update_from_chp_desc(card);
5028 retry:
5029         if (retries < 3)
5030                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5031                         dev_name(&card->gdev->dev));
5032         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5033         ccw_device_set_offline(CARD_DDEV(card));
5034         ccw_device_set_offline(CARD_WDEV(card));
5035         ccw_device_set_offline(CARD_RDEV(card));
5036         qdio_free(CARD_DDEV(card));
5037         rc = ccw_device_set_online(CARD_RDEV(card));
5038         if (rc)
5039                 goto retriable;
5040         rc = ccw_device_set_online(CARD_WDEV(card));
5041         if (rc)
5042                 goto retriable;
5043         rc = ccw_device_set_online(CARD_DDEV(card));
5044         if (rc)
5045                 goto retriable;
5046 retriable:
5047         if (rc == -ERESTARTSYS) {
5048                 QETH_DBF_TEXT(SETUP, 2, "break1");
5049                 return rc;
5050         } else if (rc) {
5051                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5052                 if (--retries < 0)
5053                         goto out;
5054                 else
5055                         goto retry;
5056         }
5057         qeth_determine_capabilities(card);
5058         qeth_init_tokens(card);
5059         qeth_init_func_level(card);
5060         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5061         if (rc == -ERESTARTSYS) {
5062                 QETH_DBF_TEXT(SETUP, 2, "break2");
5063                 return rc;
5064         } else if (rc) {
5065                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5066                 if (--retries < 0)
5067                         goto out;
5068                 else
5069                         goto retry;
5070         }
5071         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5072         if (rc == -ERESTARTSYS) {
5073                 QETH_DBF_TEXT(SETUP, 2, "break3");
5074                 return rc;
5075         } else if (rc) {
5076                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5077                 if (--retries < 0)
5078                         goto out;
5079                 else
5080                         goto retry;
5081         }
5082         card->read_or_write_problem = 0;
5083         rc = qeth_mpc_initialize(card);
5084         if (rc) {
5085                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5086                 goto out;
5087         }
5088
5089         rc = qeth_send_startlan(card);
5090         if (rc) {
5091                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5092                 if (rc == IPA_RC_LAN_OFFLINE) {
5093                         dev_warn(&card->gdev->dev,
5094                                 "The LAN is offline\n");
5095                         card->lan_online = 0;
5096                 } else {
5097                         rc = -ENODEV;
5098                         goto out;
5099                 }
5100         } else
5101                 card->lan_online = 1;
5102
5103         card->options.ipa4.supported_funcs = 0;
5104         card->options.ipa6.supported_funcs = 0;
5105         card->options.adp.supported_funcs = 0;
5106         card->options.sbp.supported_funcs = 0;
5107         card->info.diagass_support = 0;
5108         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5109         if (rc == -ENOMEM)
5110                 goto out;
5111         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5112                 rc = qeth_query_setadapterparms(card);
5113                 if (rc < 0) {
5114                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5115                         goto out;
5116                 }
5117         }
5118         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5119                 rc = qeth_query_setdiagass(card);
5120                 if (rc < 0) {
5121                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5122                         goto out;
5123                 }
5124         }
5125         return 0;
5126 out:
5127         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5128                 "an error on the device\n");
5129         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5130                 dev_name(&card->gdev->dev), rc);
5131         return rc;
5132 }
5133 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5134
5135 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5136                 struct qdio_buffer_element *element,
5137                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5138 {
5139         struct page *page = virt_to_page(element->addr);
5140         if (*pskb == NULL) {
5141                 if (qethbuffer->rx_skb) {
5142                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5143                         *pskb = qethbuffer->rx_skb;
5144                         qethbuffer->rx_skb = NULL;
5145                 } else {
5146                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5147                         if (!(*pskb))
5148                                 return -ENOMEM;
5149                 }
5150
5151                 skb_reserve(*pskb, ETH_HLEN);
5152                 if (data_len <= QETH_RX_PULL_LEN) {
5153                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5154                                 data_len);
5155                 } else {
5156                         get_page(page);
5157                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5158                                element->addr + offset, QETH_RX_PULL_LEN);
5159                         skb_fill_page_desc(*pskb, *pfrag, page,
5160                                 offset + QETH_RX_PULL_LEN,
5161                                 data_len - QETH_RX_PULL_LEN);
5162                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5163                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5164                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5165                         (*pfrag)++;
5166                 }
5167         } else {
5168                 get_page(page);
5169                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5170                 (*pskb)->data_len += data_len;
5171                 (*pskb)->len      += data_len;
5172                 (*pskb)->truesize += data_len;
5173                 (*pfrag)++;
5174         }
5175
5176
5177         return 0;
5178 }
5179
5180 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5181 {
5182         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5183 }
5184
5185 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5186                 struct qeth_qdio_buffer *qethbuffer,
5187                 struct qdio_buffer_element **__element, int *__offset,
5188                 struct qeth_hdr **hdr)
5189 {
5190         struct qdio_buffer_element *element = *__element;
5191         struct qdio_buffer *buffer = qethbuffer->buffer;
5192         int offset = *__offset;
5193         struct sk_buff *skb = NULL;
5194         int skb_len = 0;
5195         void *data_ptr;
5196         int data_len;
5197         int headroom = 0;
5198         int use_rx_sg = 0;
5199         int frag = 0;
5200
5201         /* qeth_hdr must not cross element boundaries */
5202         if (element->length < offset + sizeof(struct qeth_hdr)) {
5203                 if (qeth_is_last_sbale(element))
5204                         return NULL;
5205                 element++;
5206                 offset = 0;
5207                 if (element->length < sizeof(struct qeth_hdr))
5208                         return NULL;
5209         }
5210         *hdr = element->addr + offset;
5211
5212         offset += sizeof(struct qeth_hdr);
5213         switch ((*hdr)->hdr.l2.id) {
5214         case QETH_HEADER_TYPE_LAYER2:
5215                 skb_len = (*hdr)->hdr.l2.pkt_length;
5216                 break;
5217         case QETH_HEADER_TYPE_LAYER3:
5218                 skb_len = (*hdr)->hdr.l3.length;
5219                 headroom = ETH_HLEN;
5220                 break;
5221         case QETH_HEADER_TYPE_OSN:
5222                 skb_len = (*hdr)->hdr.osn.pdu_length;
5223                 headroom = sizeof(struct qeth_hdr);
5224                 break;
5225         default:
5226                 break;
5227         }
5228
5229         if (!skb_len)
5230                 return NULL;
5231
5232         if (((skb_len >= card->options.rx_sg_cb) &&
5233              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5234              (!atomic_read(&card->force_alloc_skb))) ||
5235             (card->options.cq == QETH_CQ_ENABLED)) {
5236                 use_rx_sg = 1;
5237         } else {
5238                 skb = dev_alloc_skb(skb_len + headroom);
5239                 if (!skb)
5240                         goto no_mem;
5241                 if (headroom)
5242                         skb_reserve(skb, headroom);
5243         }
5244
5245         data_ptr = element->addr + offset;
5246         while (skb_len) {
5247                 data_len = min(skb_len, (int)(element->length - offset));
5248                 if (data_len) {
5249                         if (use_rx_sg) {
5250                                 if (qeth_create_skb_frag(qethbuffer, element,
5251                                     &skb, offset, &frag, data_len))
5252                                         goto no_mem;
5253                         } else {
5254                                 memcpy(skb_put(skb, data_len), data_ptr,
5255                                         data_len);
5256                         }
5257                 }
5258                 skb_len -= data_len;
5259                 if (skb_len) {
5260                         if (qeth_is_last_sbale(element)) {
5261                                 QETH_CARD_TEXT(card, 4, "unexeob");
5262                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5263                                 dev_kfree_skb_any(skb);
5264                                 card->stats.rx_errors++;
5265                                 return NULL;
5266                         }
5267                         element++;
5268                         offset = 0;
5269                         data_ptr = element->addr;
5270                 } else {
5271                         offset += data_len;
5272                 }
5273         }
5274         *__element = element;
5275         *__offset = offset;
5276         if (use_rx_sg && card->options.performance_stats) {
5277                 card->perf_stats.sg_skbs_rx++;
5278                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5279         }
5280         return skb;
5281 no_mem:
5282         if (net_ratelimit()) {
5283                 QETH_CARD_TEXT(card, 2, "noskbmem");
5284         }
5285         card->stats.rx_dropped++;
5286         return NULL;
5287 }
5288 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5289
5290 static int qeth_setassparms_cb(struct qeth_card *card,
5291                                struct qeth_reply *reply, unsigned long data)
5292 {
5293         struct qeth_ipa_cmd *cmd;
5294
5295         QETH_CARD_TEXT(card, 4, "defadpcb");
5296
5297         cmd = (struct qeth_ipa_cmd *) data;
5298         if (cmd->hdr.return_code == 0) {
5299                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5300                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5301                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5302                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5303                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5304         }
5305         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
5306             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5307                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
5308                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
5309         }
5310         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
5311             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5312                 card->info.tx_csum_mask =
5313                         cmd->data.setassparms.data.flags_32bit;
5314                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
5315         }
5316
5317         return 0;
5318 }
5319
5320 static struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5321                                                   enum qeth_ipa_funcs ipa_func,
5322                                                   __u16 cmd_code, __u16 len,
5323                                                   enum qeth_prot_versions prot)
5324 {
5325         struct qeth_cmd_buffer *iob;
5326         struct qeth_ipa_cmd *cmd;
5327
5328         QETH_CARD_TEXT(card, 4, "getasscm");
5329         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5330
5331         if (iob) {
5332                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5333                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5334                 cmd->data.setassparms.hdr.length = 8 + len;
5335                 cmd->data.setassparms.hdr.command_code = cmd_code;
5336                 cmd->data.setassparms.hdr.return_code = 0;
5337                 cmd->data.setassparms.hdr.seq_no = 0;
5338         }
5339
5340         return iob;
5341 }
5342
5343 int qeth_send_setassparms(struct qeth_card *card,
5344                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5345                           int (*reply_cb)(struct qeth_card *,
5346                                           struct qeth_reply *, unsigned long),
5347                           void *reply_param)
5348 {
5349         int rc;
5350         struct qeth_ipa_cmd *cmd;
5351
5352         QETH_CARD_TEXT(card, 4, "sendassp");
5353
5354         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5355         if (len <= sizeof(__u32))
5356                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5357         else   /* (len > sizeof(__u32)) */
5358                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5359
5360         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5361         return rc;
5362 }
5363 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5364
5365 int qeth_send_simple_setassparms(struct qeth_card *card,
5366                                  enum qeth_ipa_funcs ipa_func,
5367                                  __u16 cmd_code, long data)
5368 {
5369         int rc;
5370         int length = 0;
5371         struct qeth_cmd_buffer *iob;
5372
5373         QETH_CARD_TEXT(card, 4, "simassp4");
5374         if (data)
5375                 length = sizeof(__u32);
5376         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5377                                        length, QETH_PROT_IPV4);
5378         if (!iob)
5379                 return -ENOMEM;
5380         rc = qeth_send_setassparms(card, iob, length, data,
5381                                    qeth_setassparms_cb, NULL);
5382         return rc;
5383 }
5384 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5385
5386 static void qeth_unregister_dbf_views(void)
5387 {
5388         int x;
5389         for (x = 0; x < QETH_DBF_INFOS; x++) {
5390                 debug_unregister(qeth_dbf[x].id);
5391                 qeth_dbf[x].id = NULL;
5392         }
5393 }
5394
5395 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5396 {
5397         char dbf_txt_buf[32];
5398         va_list args;
5399
5400         if (!debug_level_enabled(id, level))
5401                 return;
5402         va_start(args, fmt);
5403         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5404         va_end(args);
5405         debug_text_event(id, level, dbf_txt_buf);
5406 }
5407 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5408
5409 static int qeth_register_dbf_views(void)
5410 {
5411         int ret;
5412         int x;
5413
5414         for (x = 0; x < QETH_DBF_INFOS; x++) {
5415                 /* register the areas */
5416                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5417                                                 qeth_dbf[x].pages,
5418                                                 qeth_dbf[x].areas,
5419                                                 qeth_dbf[x].len);
5420                 if (qeth_dbf[x].id == NULL) {
5421                         qeth_unregister_dbf_views();
5422                         return -ENOMEM;
5423                 }
5424
5425                 /* register a view */
5426                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5427                 if (ret) {
5428                         qeth_unregister_dbf_views();
5429                         return ret;
5430                 }
5431
5432                 /* set a passing level */
5433                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5434         }
5435
5436         return 0;
5437 }
5438
5439 int qeth_core_load_discipline(struct qeth_card *card,
5440                 enum qeth_discipline_id discipline)
5441 {
5442         int rc = 0;
5443         mutex_lock(&qeth_mod_mutex);
5444         switch (discipline) {
5445         case QETH_DISCIPLINE_LAYER3:
5446                 card->discipline = try_then_request_module(
5447                         symbol_get(qeth_l3_discipline), "qeth_l3");
5448                 break;
5449         case QETH_DISCIPLINE_LAYER2:
5450                 card->discipline = try_then_request_module(
5451                         symbol_get(qeth_l2_discipline), "qeth_l2");
5452                 break;
5453         }
5454         if (!card->discipline) {
5455                 dev_err(&card->gdev->dev, "There is no kernel module to "
5456                         "support discipline %d\n", discipline);
5457                 rc = -EINVAL;
5458         }
5459         mutex_unlock(&qeth_mod_mutex);
5460         return rc;
5461 }
5462
5463 void qeth_core_free_discipline(struct qeth_card *card)
5464 {
5465         if (card->options.layer2)
5466                 symbol_put(qeth_l2_discipline);
5467         else
5468                 symbol_put(qeth_l3_discipline);
5469         card->discipline = NULL;
5470 }
5471
5472 const struct device_type qeth_generic_devtype = {
5473         .name = "qeth_generic",
5474         .groups = qeth_generic_attr_groups,
5475 };
5476 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5477
5478 static const struct device_type qeth_osn_devtype = {
5479         .name = "qeth_osn",
5480         .groups = qeth_osn_attr_groups,
5481 };
5482
5483 #define DBF_NAME_LEN    20
5484
5485 struct qeth_dbf_entry {
5486         char dbf_name[DBF_NAME_LEN];
5487         debug_info_t *dbf_info;
5488         struct list_head dbf_list;
5489 };
5490
5491 static LIST_HEAD(qeth_dbf_list);
5492 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5493
5494 static debug_info_t *qeth_get_dbf_entry(char *name)
5495 {
5496         struct qeth_dbf_entry *entry;
5497         debug_info_t *rc = NULL;
5498
5499         mutex_lock(&qeth_dbf_list_mutex);
5500         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5501                 if (strcmp(entry->dbf_name, name) == 0) {
5502                         rc = entry->dbf_info;
5503                         break;
5504                 }
5505         }
5506         mutex_unlock(&qeth_dbf_list_mutex);
5507         return rc;
5508 }
5509
5510 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5511 {
5512         struct qeth_dbf_entry *new_entry;
5513
5514         card->debug = debug_register(name, 2, 1, 8);
5515         if (!card->debug) {
5516                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5517                 goto err;
5518         }
5519         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5520                 goto err_dbg;
5521         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5522         if (!new_entry)
5523                 goto err_dbg;
5524         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5525         new_entry->dbf_info = card->debug;
5526         mutex_lock(&qeth_dbf_list_mutex);
5527         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5528         mutex_unlock(&qeth_dbf_list_mutex);
5529
5530         return 0;
5531
5532 err_dbg:
5533         debug_unregister(card->debug);
5534 err:
5535         return -ENOMEM;
5536 }
5537
5538 static void qeth_clear_dbf_list(void)
5539 {
5540         struct qeth_dbf_entry *entry, *tmp;
5541
5542         mutex_lock(&qeth_dbf_list_mutex);
5543         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5544                 list_del(&entry->dbf_list);
5545                 debug_unregister(entry->dbf_info);
5546                 kfree(entry);
5547         }
5548         mutex_unlock(&qeth_dbf_list_mutex);
5549 }
5550
5551 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5552 {
5553         struct qeth_card *card;
5554         struct device *dev;
5555         int rc;
5556         unsigned long flags;
5557         char dbf_name[DBF_NAME_LEN];
5558
5559         QETH_DBF_TEXT(SETUP, 2, "probedev");
5560
5561         dev = &gdev->dev;
5562         if (!get_device(dev))
5563                 return -ENODEV;
5564
5565         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5566
5567         card = qeth_alloc_card();
5568         if (!card) {
5569                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5570                 rc = -ENOMEM;
5571                 goto err_dev;
5572         }
5573
5574         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5575                 dev_name(&gdev->dev));
5576         card->debug = qeth_get_dbf_entry(dbf_name);
5577         if (!card->debug) {
5578                 rc = qeth_add_dbf_entry(card, dbf_name);
5579                 if (rc)
5580                         goto err_card;
5581         }
5582
5583         card->read.ccwdev  = gdev->cdev[0];
5584         card->write.ccwdev = gdev->cdev[1];
5585         card->data.ccwdev  = gdev->cdev[2];
5586         dev_set_drvdata(&gdev->dev, card);
5587         card->gdev = gdev;
5588         gdev->cdev[0]->handler = qeth_irq;
5589         gdev->cdev[1]->handler = qeth_irq;
5590         gdev->cdev[2]->handler = qeth_irq;
5591
5592         rc = qeth_determine_card_type(card);
5593         if (rc) {
5594                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5595                 goto err_card;
5596         }
5597         rc = qeth_setup_card(card);
5598         if (rc) {
5599                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5600                 goto err_card;
5601         }
5602
5603         switch (card->info.type) {
5604         case QETH_CARD_TYPE_OSN:
5605         case QETH_CARD_TYPE_OSM:
5606                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5607                 if (rc)
5608                         goto err_card;
5609
5610                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5611                                         ? card->discipline->devtype
5612                                         : &qeth_osn_devtype;
5613                 rc = card->discipline->setup(card->gdev);
5614                 if (rc)
5615                         goto err_disc;
5616                 break;
5617         default:
5618                 gdev->dev.type = &qeth_generic_devtype;
5619                 break;
5620         }
5621
5622         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5623         list_add_tail(&card->list, &qeth_core_card_list.list);
5624         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5625
5626         qeth_determine_capabilities(card);
5627         return 0;
5628
5629 err_disc:
5630         qeth_core_free_discipline(card);
5631 err_card:
5632         qeth_core_free_card(card);
5633 err_dev:
5634         put_device(dev);
5635         return rc;
5636 }
5637
5638 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5639 {
5640         unsigned long flags;
5641         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5642
5643         QETH_DBF_TEXT(SETUP, 2, "removedv");
5644
5645         if (card->discipline) {
5646                 card->discipline->remove(gdev);
5647                 qeth_core_free_discipline(card);
5648         }
5649
5650         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5651         list_del(&card->list);
5652         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5653         qeth_core_free_card(card);
5654         dev_set_drvdata(&gdev->dev, NULL);
5655         put_device(&gdev->dev);
5656         return;
5657 }
5658
5659 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5660 {
5661         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5662         int rc = 0;
5663         int def_discipline;
5664
5665         if (!card->discipline) {
5666                 if (card->info.type == QETH_CARD_TYPE_IQD)
5667                         def_discipline = QETH_DISCIPLINE_LAYER3;
5668                 else
5669                         def_discipline = QETH_DISCIPLINE_LAYER2;
5670                 rc = qeth_core_load_discipline(card, def_discipline);
5671                 if (rc)
5672                         goto err;
5673                 rc = card->discipline->setup(card->gdev);
5674                 if (rc) {
5675                         qeth_core_free_discipline(card);
5676                         goto err;
5677                 }
5678         }
5679         rc = card->discipline->set_online(gdev);
5680 err:
5681         return rc;
5682 }
5683
5684 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5685 {
5686         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5687         return card->discipline->set_offline(gdev);
5688 }
5689
5690 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5691 {
5692         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5693         if (card->discipline && card->discipline->shutdown)
5694                 card->discipline->shutdown(gdev);
5695 }
5696
5697 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5698 {
5699         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5700         if (card->discipline && card->discipline->prepare)
5701                 return card->discipline->prepare(gdev);
5702         return 0;
5703 }
5704
5705 static void qeth_core_complete(struct ccwgroup_device *gdev)
5706 {
5707         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5708         if (card->discipline && card->discipline->complete)
5709                 card->discipline->complete(gdev);
5710 }
5711
5712 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5713 {
5714         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5715         if (card->discipline && card->discipline->freeze)
5716                 return card->discipline->freeze(gdev);
5717         return 0;
5718 }
5719
5720 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5721 {
5722         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5723         if (card->discipline && card->discipline->thaw)
5724                 return card->discipline->thaw(gdev);
5725         return 0;
5726 }
5727
5728 static int qeth_core_restore(struct ccwgroup_device *gdev)
5729 {
5730         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5731         if (card->discipline && card->discipline->restore)
5732                 return card->discipline->restore(gdev);
5733         return 0;
5734 }
5735
5736 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5737         .driver = {
5738                 .owner = THIS_MODULE,
5739                 .name = "qeth",
5740         },
5741         .setup = qeth_core_probe_device,
5742         .remove = qeth_core_remove_device,
5743         .set_online = qeth_core_set_online,
5744         .set_offline = qeth_core_set_offline,
5745         .shutdown = qeth_core_shutdown,
5746         .prepare = qeth_core_prepare,
5747         .complete = qeth_core_complete,
5748         .freeze = qeth_core_freeze,
5749         .thaw = qeth_core_thaw,
5750         .restore = qeth_core_restore,
5751 };
5752
5753 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5754                                             const char *buf, size_t count)
5755 {
5756         int err;
5757
5758         err = ccwgroup_create_dev(qeth_core_root_dev,
5759                                   &qeth_core_ccwgroup_driver, 3, buf);
5760
5761         return err ? err : count;
5762 }
5763 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5764
5765 static struct attribute *qeth_drv_attrs[] = {
5766         &driver_attr_group.attr,
5767         NULL,
5768 };
5769 static struct attribute_group qeth_drv_attr_group = {
5770         .attrs = qeth_drv_attrs,
5771 };
5772 static const struct attribute_group *qeth_drv_attr_groups[] = {
5773         &qeth_drv_attr_group,
5774         NULL,
5775 };
5776
5777 static struct {
5778         const char str[ETH_GSTRING_LEN];
5779 } qeth_ethtool_stats_keys[] = {
5780 /*  0 */{"rx skbs"},
5781         {"rx buffers"},
5782         {"tx skbs"},
5783         {"tx buffers"},
5784         {"tx skbs no packing"},
5785         {"tx buffers no packing"},
5786         {"tx skbs packing"},
5787         {"tx buffers packing"},
5788         {"tx sg skbs"},
5789         {"tx sg frags"},
5790 /* 10 */{"rx sg skbs"},
5791         {"rx sg frags"},
5792         {"rx sg page allocs"},
5793         {"tx large kbytes"},
5794         {"tx large count"},
5795         {"tx pk state ch n->p"},
5796         {"tx pk state ch p->n"},
5797         {"tx pk watermark low"},
5798         {"tx pk watermark high"},
5799         {"queue 0 buffer usage"},
5800 /* 20 */{"queue 1 buffer usage"},
5801         {"queue 2 buffer usage"},
5802         {"queue 3 buffer usage"},
5803         {"rx poll time"},
5804         {"rx poll count"},
5805         {"rx do_QDIO time"},
5806         {"rx do_QDIO count"},
5807         {"tx handler time"},
5808         {"tx handler count"},
5809         {"tx time"},
5810 /* 30 */{"tx count"},
5811         {"tx do_QDIO time"},
5812         {"tx do_QDIO count"},
5813         {"tx csum"},
5814         {"tx lin"},
5815         {"cq handler count"},
5816         {"cq handler time"}
5817 };
5818
5819 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5820 {
5821         switch (stringset) {
5822         case ETH_SS_STATS:
5823                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5824         default:
5825                 return -EINVAL;
5826         }
5827 }
5828 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5829
5830 void qeth_core_get_ethtool_stats(struct net_device *dev,
5831                 struct ethtool_stats *stats, u64 *data)
5832 {
5833         struct qeth_card *card = dev->ml_priv;
5834         data[0] = card->stats.rx_packets -
5835                                 card->perf_stats.initial_rx_packets;
5836         data[1] = card->perf_stats.bufs_rec;
5837         data[2] = card->stats.tx_packets -
5838                                 card->perf_stats.initial_tx_packets;
5839         data[3] = card->perf_stats.bufs_sent;
5840         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5841                         - card->perf_stats.skbs_sent_pack;
5842         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5843         data[6] = card->perf_stats.skbs_sent_pack;
5844         data[7] = card->perf_stats.bufs_sent_pack;
5845         data[8] = card->perf_stats.sg_skbs_sent;
5846         data[9] = card->perf_stats.sg_frags_sent;
5847         data[10] = card->perf_stats.sg_skbs_rx;
5848         data[11] = card->perf_stats.sg_frags_rx;
5849         data[12] = card->perf_stats.sg_alloc_page_rx;
5850         data[13] = (card->perf_stats.large_send_bytes >> 10);
5851         data[14] = card->perf_stats.large_send_cnt;
5852         data[15] = card->perf_stats.sc_dp_p;
5853         data[16] = card->perf_stats.sc_p_dp;
5854         data[17] = QETH_LOW_WATERMARK_PACK;
5855         data[18] = QETH_HIGH_WATERMARK_PACK;
5856         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5857         data[20] = (card->qdio.no_out_queues > 1) ?
5858                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5859         data[21] = (card->qdio.no_out_queues > 2) ?
5860                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5861         data[22] = (card->qdio.no_out_queues > 3) ?
5862                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5863         data[23] = card->perf_stats.inbound_time;
5864         data[24] = card->perf_stats.inbound_cnt;
5865         data[25] = card->perf_stats.inbound_do_qdio_time;
5866         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5867         data[27] = card->perf_stats.outbound_handler_time;
5868         data[28] = card->perf_stats.outbound_handler_cnt;
5869         data[29] = card->perf_stats.outbound_time;
5870         data[30] = card->perf_stats.outbound_cnt;
5871         data[31] = card->perf_stats.outbound_do_qdio_time;
5872         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5873         data[33] = card->perf_stats.tx_csum;
5874         data[34] = card->perf_stats.tx_lin;
5875         data[35] = card->perf_stats.cq_cnt;
5876         data[36] = card->perf_stats.cq_time;
5877 }
5878 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5879
5880 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5881 {
5882         switch (stringset) {
5883         case ETH_SS_STATS:
5884                 memcpy(data, &qeth_ethtool_stats_keys,
5885                         sizeof(qeth_ethtool_stats_keys));
5886                 break;
5887         default:
5888                 WARN_ON(1);
5889                 break;
5890         }
5891 }
5892 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5893
5894 void qeth_core_get_drvinfo(struct net_device *dev,
5895                 struct ethtool_drvinfo *info)
5896 {
5897         struct qeth_card *card = dev->ml_priv;
5898
5899         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5900                 sizeof(info->driver));
5901         strlcpy(info->version, "1.0", sizeof(info->version));
5902         strlcpy(info->fw_version, card->info.mcl_level,
5903                 sizeof(info->fw_version));
5904         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5905                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5906 }
5907 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5908
5909 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5910 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5911 /* Always advertize and support all speeds up to specified, and only one     */
5912 /* specified port type.                                                      */
5913 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5914                                 int maxspeed, int porttype)
5915 {
5916         int port_sup, port_adv, spd_sup, spd_adv;
5917
5918         switch (porttype) {
5919         case PORT_TP:
5920                 port_sup = SUPPORTED_TP;
5921                 port_adv = ADVERTISED_TP;
5922                 break;
5923         case PORT_FIBRE:
5924                 port_sup = SUPPORTED_FIBRE;
5925                 port_adv = ADVERTISED_FIBRE;
5926                 break;
5927         default:
5928                 port_sup = SUPPORTED_TP;
5929                 port_adv = ADVERTISED_TP;
5930                 WARN_ON_ONCE(1);
5931         }
5932
5933         /* "Fallthrough" case'es ordered from high to low result in setting  */
5934         /* flags cumulatively, starting from the specified speed and down to */
5935         /* the lowest possible.                                              */
5936         spd_sup = 0;
5937         spd_adv = 0;
5938         switch (maxspeed) {
5939         case SPEED_10000:
5940                 spd_sup |= SUPPORTED_10000baseT_Full;
5941                 spd_adv |= ADVERTISED_10000baseT_Full;
5942         case SPEED_1000:
5943                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5944                 spd_adv |= ADVERTISED_1000baseT_Half |
5945                                                 ADVERTISED_1000baseT_Full;
5946         case SPEED_100:
5947                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5948                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5949         case SPEED_10:
5950                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5951                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5952         break;
5953         default:
5954                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5955                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5956                 WARN_ON_ONCE(1);
5957         }
5958         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5959         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5960 }
5961
5962 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5963                                         struct ethtool_cmd *ecmd)
5964 {
5965         struct qeth_card *card = netdev->ml_priv;
5966         enum qeth_link_types link_type;
5967         struct carrier_info carrier_info;
5968         int rc;
5969         u32 speed;
5970
5971         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5972                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5973         else
5974                 link_type = card->info.link_type;
5975
5976         ecmd->transceiver = XCVR_INTERNAL;
5977         ecmd->duplex = DUPLEX_FULL;
5978         ecmd->autoneg = AUTONEG_ENABLE;
5979
5980         switch (link_type) {
5981         case QETH_LINK_TYPE_FAST_ETH:
5982         case QETH_LINK_TYPE_LANE_ETH100:
5983                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5984                 speed = SPEED_100;
5985                 ecmd->port = PORT_TP;
5986                 break;
5987
5988         case QETH_LINK_TYPE_GBIT_ETH:
5989         case QETH_LINK_TYPE_LANE_ETH1000:
5990                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5991                 speed = SPEED_1000;
5992                 ecmd->port = PORT_FIBRE;
5993                 break;
5994
5995         case QETH_LINK_TYPE_10GBIT_ETH:
5996                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5997                 speed = SPEED_10000;
5998                 ecmd->port = PORT_FIBRE;
5999                 break;
6000
6001         default:
6002                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
6003                 speed = SPEED_10;
6004                 ecmd->port = PORT_TP;
6005         }
6006         ethtool_cmd_speed_set(ecmd, speed);
6007
6008         /* Check if we can obtain more accurate information.     */
6009         /* If QUERY_CARD_INFO command is not supported or fails, */
6010         /* just return the heuristics that was filled above.     */
6011         if (!qeth_card_hw_is_reachable(card))
6012                 return -ENODEV;
6013         rc = qeth_query_card_info(card, &carrier_info);
6014         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6015                 return 0;
6016         if (rc) /* report error from the hardware operation */
6017                 return rc;
6018         /* on success, fill in the information got from the hardware */
6019
6020         netdev_dbg(netdev,
6021         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6022                         carrier_info.card_type,
6023                         carrier_info.port_mode,
6024                         carrier_info.port_speed);
6025
6026         /* Update attributes for which we've obtained more authoritative */
6027         /* information, leave the rest the way they where filled above.  */
6028         switch (carrier_info.card_type) {
6029         case CARD_INFO_TYPE_1G_COPPER_A:
6030         case CARD_INFO_TYPE_1G_COPPER_B:
6031                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6032                 ecmd->port = PORT_TP;
6033                 break;
6034         case CARD_INFO_TYPE_1G_FIBRE_A:
6035         case CARD_INFO_TYPE_1G_FIBRE_B:
6036                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6037                 ecmd->port = PORT_FIBRE;
6038                 break;
6039         case CARD_INFO_TYPE_10G_FIBRE_A:
6040         case CARD_INFO_TYPE_10G_FIBRE_B:
6041                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6042                 ecmd->port = PORT_FIBRE;
6043                 break;
6044         }
6045
6046         switch (carrier_info.port_mode) {
6047         case CARD_INFO_PORTM_FULLDUPLEX:
6048                 ecmd->duplex = DUPLEX_FULL;
6049                 break;
6050         case CARD_INFO_PORTM_HALFDUPLEX:
6051                 ecmd->duplex = DUPLEX_HALF;
6052                 break;
6053         }
6054
6055         switch (carrier_info.port_speed) {
6056         case CARD_INFO_PORTS_10M:
6057                 speed = SPEED_10;
6058                 break;
6059         case CARD_INFO_PORTS_100M:
6060                 speed = SPEED_100;
6061                 break;
6062         case CARD_INFO_PORTS_1G:
6063                 speed = SPEED_1000;
6064                 break;
6065         case CARD_INFO_PORTS_10G:
6066                 speed = SPEED_10000;
6067                 break;
6068         }
6069         ethtool_cmd_speed_set(ecmd, speed);
6070
6071         return 0;
6072 }
6073 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6074
6075 static int qeth_send_checksum_command(struct qeth_card *card)
6076 {
6077         int rc;
6078
6079         rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6080                                           IPA_CMD_ASS_START, 0);
6081         if (rc) {
6082                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
6083                         "failed, using SW checksumming\n",
6084                         QETH_CARD_IFNAME(card));
6085                 return rc;
6086         }
6087         rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6088                                           IPA_CMD_ASS_ENABLE,
6089                                           card->info.csum_mask);
6090         if (rc) {
6091                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
6092                         "failed, using SW checksumming\n",
6093                         QETH_CARD_IFNAME(card));
6094                 return rc;
6095         }
6096         return 0;
6097 }
6098
6099 int qeth_set_rx_csum(struct qeth_card *card, int on)
6100 {
6101         int rc;
6102
6103         if (on) {
6104                 rc = qeth_send_checksum_command(card);
6105                 if (rc)
6106                         return -EIO;
6107                 dev_info(&card->gdev->dev,
6108                         "HW Checksumming (inbound) enabled\n");
6109         } else {
6110                 rc = qeth_send_simple_setassparms(card,
6111                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
6112                 if (rc)
6113                         return -EIO;
6114         }
6115         return 0;
6116 }
6117 EXPORT_SYMBOL_GPL(qeth_set_rx_csum);
6118
6119 int qeth_start_ipa_tx_checksum(struct qeth_card *card)
6120 {
6121         int rc = 0;
6122
6123         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6124                 return rc;
6125         rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6126                                           IPA_CMD_ASS_START, 0);
6127         if (rc)
6128                 goto err_out;
6129         rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6130                                           IPA_CMD_ASS_ENABLE,
6131                                           card->info.tx_csum_mask);
6132         if (rc)
6133                 goto err_out;
6134
6135         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
6136         return rc;
6137 err_out:
6138         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
6139                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
6140         return rc;
6141 }
6142 EXPORT_SYMBOL_GPL(qeth_start_ipa_tx_checksum);
6143
6144 static int __init qeth_core_init(void)
6145 {
6146         int rc;
6147
6148         pr_info("loading core functions\n");
6149         INIT_LIST_HEAD(&qeth_core_card_list.list);
6150         INIT_LIST_HEAD(&qeth_dbf_list);
6151         rwlock_init(&qeth_core_card_list.rwlock);
6152         mutex_init(&qeth_mod_mutex);
6153
6154         qeth_wq = create_singlethread_workqueue("qeth_wq");
6155
6156         rc = qeth_register_dbf_views();
6157         if (rc)
6158                 goto out_err;
6159         qeth_core_root_dev = root_device_register("qeth");
6160         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6161         if (rc)
6162                 goto register_err;
6163         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6164                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6165         if (!qeth_core_header_cache) {
6166                 rc = -ENOMEM;
6167                 goto slab_err;
6168         }
6169         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6170                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6171         if (!qeth_qdio_outbuf_cache) {
6172                 rc = -ENOMEM;
6173                 goto cqslab_err;
6174         }
6175         rc = ccw_driver_register(&qeth_ccw_driver);
6176         if (rc)
6177                 goto ccw_err;
6178         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6179         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6180         if (rc)
6181                 goto ccwgroup_err;
6182
6183         return 0;
6184
6185 ccwgroup_err:
6186         ccw_driver_unregister(&qeth_ccw_driver);
6187 ccw_err:
6188         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6189 cqslab_err:
6190         kmem_cache_destroy(qeth_core_header_cache);
6191 slab_err:
6192         root_device_unregister(qeth_core_root_dev);
6193 register_err:
6194         qeth_unregister_dbf_views();
6195 out_err:
6196         pr_err("Initializing the qeth device driver failed\n");
6197         return rc;
6198 }
6199
6200 static void __exit qeth_core_exit(void)
6201 {
6202         qeth_clear_dbf_list();
6203         destroy_workqueue(qeth_wq);
6204         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6205         ccw_driver_unregister(&qeth_ccw_driver);
6206         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6207         kmem_cache_destroy(qeth_core_header_cache);
6208         root_device_unregister(qeth_core_root_dev);
6209         qeth_unregister_dbf_views();
6210         pr_info("core functions removed\n");
6211 }
6212
6213 module_init(qeth_core_init);
6214 module_exit(qeth_core_exit);
6215 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6216 MODULE_DESCRIPTION("qeth core functions");
6217 MODULE_LICENSE("GPL");