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
 521 static int qeth_issue_next_read(struct qeth_card *card)
 522 {
 523         int rc;
 524         struct qeth_cmd_buffer *iob;
 525
 526         QETH_CARD_TEXT(card, 5, "issnxrd");
 527         if (card->read.state != CH_STATE_UP)
 528                 return -EIO;
 529         iob = qeth_get_buffer(&card->read);
 530         if (!iob) {
 531                 dev_warn(&card->gdev->dev, "The qeth device driver "
 532                         "failed to recover an error on the device\n");
 533                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 534                         "available\n", dev_name(&card->gdev->dev));
 535                 return -ENOMEM;
 536         }
 537         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 538         QETH_CARD_TEXT(card, 6, "noirqpnd");
 539         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 540                               (addr_t) iob, 0, 0);
 541         if (rc) {
 542                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 543                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 544                 atomic_set(&card->read.irq_pending, 0);
 545                 card->read_or_write_problem = 1;
 546                 qeth_schedule_recovery(card);
 547                 wake_up(&card->wait_q);
 548         }
 549         return rc;
 550 }
 551
 552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 553 {
 554         struct qeth_reply *reply;
 555
 556         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 557         if (reply) {
 558                 atomic_set(&reply->refcnt, 1);
 559                 atomic_set(&reply->received, 0);
 560                 reply->card = card;
 561         }
 562         return reply;
 563 }
 564
 565 static void qeth_get_reply(struct qeth_reply *reply)
 566 {
 567         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 568         atomic_inc(&reply->refcnt);
 569 }
 570
 571 static void qeth_put_reply(struct qeth_reply *reply)
 572 {
 573         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 574         if (atomic_dec_and_test(&reply->refcnt))
 575                 kfree(reply);
 576 }
 577
 578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 579                 struct qeth_card *card)
 580 {
 581         char *ipa_name;
 582         int com = cmd->hdr.command;
 583         ipa_name = qeth_get_ipa_cmd_name(com);
 584         if (rc)
 585                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 586                                 "x%X \"%s\"\n",
 587                                 ipa_name, com, dev_name(&card->gdev->dev),
 588                                 QETH_CARD_IFNAME(card), rc,
 589                                 qeth_get_ipa_msg(rc));
 590         else
 591                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 592                                 ipa_name, com, dev_name(&card->gdev->dev),
 593                                 QETH_CARD_IFNAME(card));
 594 }
 595
 596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 597                 struct qeth_cmd_buffer *iob)
 598 {
 599         struct qeth_ipa_cmd *cmd = NULL;
 600
 601         QETH_CARD_TEXT(card, 5, "chkipad");
 602         if (IS_IPA(iob->data)) {
 603                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 604                 if (IS_IPA_REPLY(cmd)) {
 605                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 606                             cmd->hdr.command != IPA_CMD_DELCCID &&
 607                             cmd->hdr.command != IPA_CMD_MODCCID &&
 608                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 609                                 qeth_issue_ipa_msg(cmd,
 610                                                 cmd->hdr.return_code, card);
 611                         return cmd;
 612                 } else {
 613                         switch (cmd->hdr.command) {
 614                         case IPA_CMD_STOPLAN:
 615                                 if (cmd->hdr.return_code ==
 616                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 617                                         dev_err(&card->gdev->dev,
 618                                            "Interface %s is down because the "
 619                                            "adjacent port is no longer in "
 620                                            "reflective relay mode\n",
 621                                            QETH_CARD_IFNAME(card));
 622                                         qeth_close_dev(card);
 623                                 } else {
 624                                         dev_warn(&card->gdev->dev,
 625                                            "The link for interface %s on CHPID"
 626                                            " 0x%X failed\n",
 627                                            QETH_CARD_IFNAME(card),
 628                                            card->info.chpid);
 629                                         qeth_issue_ipa_msg(cmd,
 630                                                 cmd->hdr.return_code, card);
 631                                 }
 632                                 card->lan_online = 0;
 633                                 if (card->dev && netif_carrier_ok(card->dev))
 634                                         netif_carrier_off(card->dev);
 635                                 return NULL;
 636                         case IPA_CMD_STARTLAN:
 637                                 dev_info(&card->gdev->dev,
 638                                            "The link for %s on CHPID 0x%X has"
 639                                            " been restored\n",
 640                                            QETH_CARD_IFNAME(card),
 641                                            card->info.chpid);
 642                                 netif_carrier_on(card->dev);
 643                                 card->lan_online = 1;
 644                                 if (card->info.hwtrap)
 645                                         card->info.hwtrap = 2;
 646                                 qeth_schedule_recovery(card);
 647                                 return NULL;
 648                         case IPA_CMD_SETBRIDGEPORT_IQD:
 649                         case IPA_CMD_SETBRIDGEPORT_OSA:
 650                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 651                                 if (card->discipline->control_event_handler
 652                                                                 (card, cmd))
 653                                         return cmd;
 654                                 else
 655                                         return NULL;
 656                         case IPA_CMD_MODCCID:
 657                                 return cmd;
 658                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 659                                 QETH_CARD_TEXT(card, 3, "irla");
 660                                 break;
 661                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 662                                 QETH_CARD_TEXT(card, 3, "urla");
 663                                 break;
 664                         default:
 665                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 666                                            "but not a reply!\n");
 667                                 break;
 668                         }
 669                 }
 670         }
 671         return cmd;
 672 }
 673
 674 void qeth_clear_ipacmd_list(struct qeth_card *card)
 675 {
 676         struct qeth_reply *reply, *r;
 677         unsigned long flags;
 678
 679         QETH_CARD_TEXT(card, 4, "clipalst");
 680
 681         spin_lock_irqsave(&card->lock, flags);
 682         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 683                 qeth_get_reply(reply);
 684                 reply->rc = -EIO;
 685                 atomic_inc(&reply->received);
 686                 list_del_init(&reply->list);
 687                 wake_up(&reply->wait_q);
 688                 qeth_put_reply(reply);
 689         }
 690         spin_unlock_irqrestore(&card->lock, flags);
 691         atomic_set(&card->write.irq_pending, 0);
 692 }
 693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 694
 695 static int qeth_check_idx_response(struct qeth_card *card,
 696         unsigned char *buffer)
 697 {
 698         if (!buffer)
 699                 return 0;
 700
 701         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 702         if ((buffer[2] & 0xc0) == 0xc0) {
 703                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 704                            "with cause code 0x%02x%s\n",
 705                            buffer[4],
 706                            ((buffer[4] == 0x22) ?
 707                             " -- try another portname" : ""));
 708                 QETH_CARD_TEXT(card, 2, "ckidxres");
 709                 QETH_CARD_TEXT(card, 2, " idxterm");
 710                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 711                 if (buffer[4] == 0xf6) {
 712                         dev_err(&card->gdev->dev,
 713                         "The qeth device is not configured "
 714                         "for the OSI layer required by z/VM\n");
 715                         return -EPERM;
 716                 }
 717                 return -EIO;
 718         }
 719         return 0;
 720 }
 721
 722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 723 {
 724         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 725                 dev_get_drvdata(&cdev->dev))->dev);
 726         return card;
 727 }
 728
 729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 730                 __u32 len)
 731 {
 732         struct qeth_card *card;
 733
 734         card = CARD_FROM_CDEV(channel->ccwdev);
 735         QETH_CARD_TEXT(card, 4, "setupccw");
 736         if (channel == &card->read)
 737                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 738         else
 739                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 740         channel->ccw.count = len;
 741         channel->ccw.cda = (__u32) __pa(iob);
 742 }
 743
 744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 745 {
 746         __u8 index;
 747
 748         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 749         index = channel->io_buf_no;
 750         do {
 751                 if (channel->iob[index].state == BUF_STATE_FREE) {
 752                         channel->iob[index].state = BUF_STATE_LOCKED;
 753                         channel->io_buf_no = (channel->io_buf_no + 1) %
 754                                 QETH_CMD_BUFFER_NO;
 755                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 756                         return channel->iob + index;
 757                 }
 758                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 759         } while (index != channel->io_buf_no);
 760
 761         return NULL;
 762 }
 763
 764 void qeth_release_buffer(struct qeth_channel *channel,
 765                 struct qeth_cmd_buffer *iob)
 766 {
 767         unsigned long flags;
 768
 769         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 770         spin_lock_irqsave(&channel->iob_lock, flags);
 771         memset(iob->data, 0, QETH_BUFSIZE);
 772         iob->state = BUF_STATE_FREE;
 773         iob->callback = qeth_send_control_data_cb;
 774         iob->rc = 0;
 775         spin_unlock_irqrestore(&channel->iob_lock, flags);
 776         wake_up(&channel->wait_q);
 777 }
 778 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 779
 780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 781 {
 782         struct qeth_cmd_buffer *buffer = NULL;
 783         unsigned long flags;
 784
 785         spin_lock_irqsave(&channel->iob_lock, flags);
 786         buffer = __qeth_get_buffer(channel);
 787         spin_unlock_irqrestore(&channel->iob_lock, flags);
 788         return buffer;
 789 }
 790
 791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 792 {
 793         struct qeth_cmd_buffer *buffer;
 794         wait_event(channel->wait_q,
 795                    ((buffer = qeth_get_buffer(channel)) != NULL));
 796         return buffer;
 797 }
 798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 799
 800 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 801 {
 802         int cnt;
 803
 804         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 805                 qeth_release_buffer(channel, &channel->iob[cnt]);
 806         channel->buf_no = 0;
 807         channel->io_buf_no = 0;
 808 }
 809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 810
 811 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 812                   struct qeth_cmd_buffer *iob)
 813 {
 814         struct qeth_card *card;
 815         struct qeth_reply *reply, *r;
 816         struct qeth_ipa_cmd *cmd;
 817         unsigned long flags;
 818         int keep_reply;
 819         int rc = 0;
 820
 821         card = CARD_FROM_CDEV(channel->ccwdev);
 822         QETH_CARD_TEXT(card, 4, "sndctlcb");
 823         rc = qeth_check_idx_response(card, iob->data);
 824         switch (rc) {
 825         case 0:
 826                 break;
 827         case -EIO:
 828                 qeth_clear_ipacmd_list(card);
 829                 qeth_schedule_recovery(card);
 830                 /* fall through */
 831         default:
 832                 goto out;
 833         }
 834
 835         cmd = qeth_check_ipa_data(card, iob);
 836         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 837                 goto out;
 838         /*in case of OSN : check if cmd is set */
 839         if (card->info.type == QETH_CARD_TYPE_OSN &&
 840             cmd &&
 841             cmd->hdr.command != IPA_CMD_STARTLAN &&
 842             card->osn_info.assist_cb != NULL) {
 843                 card->osn_info.assist_cb(card->dev, cmd);
 844                 goto out;
 845         }
 846
 847         spin_lock_irqsave(&card->lock, flags);
 848         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 849                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 850                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 851                         qeth_get_reply(reply);
 852                         list_del_init(&reply->list);
 853                         spin_unlock_irqrestore(&card->lock, flags);
 854                         keep_reply = 0;
 855                         if (reply->callback != NULL) {
 856                                 if (cmd) {
 857                                         reply->offset = (__u16)((char *)cmd -
 858                                                         (char *)iob->data);
 859                                         keep_reply = reply->callback(card,
 860                                                         reply,
 861                                                         (unsigned long)cmd);
 862                                 } else
 863                                         keep_reply = reply->callback(card,
 864                                                         reply,
 865                                                         (unsigned long)iob);
 866                         }
 867                         if (cmd)
 868                                 reply->rc = (u16) cmd->hdr.return_code;
 869                         else if (iob->rc)
 870                                 reply->rc = iob->rc;
 871                         if (keep_reply) {
 872                                 spin_lock_irqsave(&card->lock, flags);
 873                                 list_add_tail(&reply->list,
 874                                               &card->cmd_waiter_list);
 875                                 spin_unlock_irqrestore(&card->lock, flags);
 876                         } else {
 877                                 atomic_inc(&reply->received);
 878                                 wake_up(&reply->wait_q);
 879                         }
 880                         qeth_put_reply(reply);
 881                         goto out;
 882                 }
 883         }
 884         spin_unlock_irqrestore(&card->lock, flags);
 885 out:
 886         memcpy(&card->seqno.pdu_hdr_ack,
 887                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 888                 QETH_SEQ_NO_LENGTH);
 889         qeth_release_buffer(channel, iob);
 890 }
 891
 892 static int qeth_setup_channel(struct qeth_channel *channel)
 893 {
 894         int cnt;
 895
 896         QETH_DBF_TEXT(SETUP, 2, "setupch");
 897         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 898                 channel->iob[cnt].data =
 899                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 900                 if (channel->iob[cnt].data == NULL)
 901                         break;
 902                 channel->iob[cnt].state = BUF_STATE_FREE;
 903                 channel->iob[cnt].channel = channel;
 904                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 905                 channel->iob[cnt].rc = 0;
 906         }
 907         if (cnt < QETH_CMD_BUFFER_NO) {
 908                 while (cnt-- > 0)
 909                         kfree(channel->iob[cnt].data);
 910                 return -ENOMEM;
 911         }
 912         channel->buf_no = 0;
 913         channel->io_buf_no = 0;
 914         atomic_set(&channel->irq_pending, 0);
 915         spin_lock_init(&channel->iob_lock);
 916
 917         init_waitqueue_head(&channel->wait_q);
 918         return 0;
 919 }
 920
 921 static int qeth_set_thread_start_bit(struct qeth_card *card,
 922                 unsigned long thread)
 923 {
 924         unsigned long flags;
 925
 926         spin_lock_irqsave(&card->thread_mask_lock, flags);
 927         if (!(card->thread_allowed_mask & thread) ||
 928               (card->thread_start_mask & thread)) {
 929                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 930                 return -EPERM;
 931         }
 932         card->thread_start_mask |= thread;
 933         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 934         return 0;
 935 }
 936
 937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 938 {
 939         unsigned long flags;
 940
 941         spin_lock_irqsave(&card->thread_mask_lock, flags);
 942         card->thread_start_mask &= ~thread;
 943         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 944         wake_up(&card->wait_q);
 945 }
 946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 947
 948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 949 {
 950         unsigned long flags;
 951
 952         spin_lock_irqsave(&card->thread_mask_lock, flags);
 953         card->thread_running_mask &= ~thread;
 954         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 955         wake_up(&card->wait_q);
 956 }
 957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 958
 959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 960 {
 961         unsigned long flags;
 962         int rc = 0;
 963
 964         spin_lock_irqsave(&card->thread_mask_lock, flags);
 965         if (card->thread_start_mask & thread) {
 966                 if ((card->thread_allowed_mask & thread) &&
 967                     !(card->thread_running_mask & thread)) {
 968                         rc = 1;
 969                         card->thread_start_mask &= ~thread;
 970                         card->thread_running_mask |= thread;
 971                 } else
 972                         rc = -EPERM;
 973         }
 974         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 975         return rc;
 976 }
 977
 978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 979 {
 980         int rc = 0;
 981
 982         wait_event(card->wait_q,
 983                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 984         return rc;
 985 }
 986 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 987
 988 void qeth_schedule_recovery(struct qeth_card *card)
 989 {
 990         QETH_CARD_TEXT(card, 2, "startrec");
 991         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 992                 schedule_work(&card->kernel_thread_starter);
 993 }
 994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 995
 996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 997 {
 998         int dstat, cstat;
 999         char *sense;
1000         struct qeth_card *card;
1001
1002         sense = (char *) irb->ecw;
1003         cstat = irb->scsw.cmd.cstat;
1004         dstat = irb->scsw.cmd.dstat;
1005         card = CARD_FROM_CDEV(cdev);
1006
1007         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1008                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1009                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1010                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1011                 dev_warn(&cdev->dev, "The qeth device driver "
1012                         "failed to recover an error on the device\n");
1013                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1014                         dev_name(&cdev->dev), dstat, cstat);
1015                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1016                                 16, 1, irb, 64, 1);
1017                 return 1;
1018         }
1019
1020         if (dstat & DEV_STAT_UNIT_CHECK) {
1021                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1022                     SENSE_RESETTING_EVENT_FLAG) {
1023                         QETH_CARD_TEXT(card, 2, "REVIND");
1024                         return 1;
1025                 }
1026                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1027                     SENSE_COMMAND_REJECT_FLAG) {
1028                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1029                         return 1;
1030                 }
1031                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1032                         QETH_CARD_TEXT(card, 2, "AFFE");
1033                         return 1;
1034                 }
1035                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1036                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1037                         return 0;
1038                 }
1039                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1040                         return 1;
1041         }
1042         return 0;
1043 }
1044
1045 static long __qeth_check_irb_error(struct ccw_device *cdev,
1046                 unsigned long intparm, struct irb *irb)
1047 {
1048         struct qeth_card *card;
1049
1050         card = CARD_FROM_CDEV(cdev);
1051
1052         if (!card || !IS_ERR(irb))
1053                 return 0;
1054
1055         switch (PTR_ERR(irb)) {
1056         case -EIO:
1057                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1058                         dev_name(&cdev->dev));
1059                 QETH_CARD_TEXT(card, 2, "ckirberr");
1060                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1061                 break;
1062         case -ETIMEDOUT:
1063                 dev_warn(&cdev->dev, "A hardware operation timed out"
1064                         " on the device\n");
1065                 QETH_CARD_TEXT(card, 2, "ckirberr");
1066                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1067                 if (intparm == QETH_RCD_PARM) {
1068                         if (card->data.ccwdev == cdev) {
1069                                 card->data.state = CH_STATE_DOWN;
1070                                 wake_up(&card->wait_q);
1071                         }
1072                 }
1073                 break;
1074         default:
1075                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1076                         dev_name(&cdev->dev), PTR_ERR(irb));
1077                 QETH_CARD_TEXT(card, 2, "ckirberr");
1078                 QETH_CARD_TEXT(card, 2, "  rc???");
1079         }
1080         return PTR_ERR(irb);
1081 }
1082
1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1084                 struct irb *irb)
1085 {
1086         int rc;
1087         int cstat, dstat;
1088         struct qeth_cmd_buffer *buffer;
1089         struct qeth_channel *channel;
1090         struct qeth_card *card;
1091         struct qeth_cmd_buffer *iob;
1092         __u8 index;
1093
1094         if (__qeth_check_irb_error(cdev, intparm, irb))
1095                 return;
1096         cstat = irb->scsw.cmd.cstat;
1097         dstat = irb->scsw.cmd.dstat;
1098
1099         card = CARD_FROM_CDEV(cdev);
1100         if (!card)
1101                 return;
1102
1103         QETH_CARD_TEXT(card, 5, "irq");
1104
1105         if (card->read.ccwdev == cdev) {
1106                 channel = &card->read;
1107                 QETH_CARD_TEXT(card, 5, "read");
1108         } else if (card->write.ccwdev == cdev) {
1109                 channel = &card->write;
1110                 QETH_CARD_TEXT(card, 5, "write");
1111         } else {
1112                 channel = &card->data;
1113                 QETH_CARD_TEXT(card, 5, "data");
1114         }
1115         atomic_set(&channel->irq_pending, 0);
1116
1117         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1118                 channel->state = CH_STATE_STOPPED;
1119
1120         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1121                 channel->state = CH_STATE_HALTED;
1122
1123         /*let's wake up immediately on data channel*/
1124         if ((channel == &card->data) && (intparm != 0) &&
1125             (intparm != QETH_RCD_PARM))
1126                 goto out;
1127
1128         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1129                 QETH_CARD_TEXT(card, 6, "clrchpar");
1130                 /* we don't have to handle this further */
1131                 intparm = 0;
1132         }
1133         if (intparm == QETH_HALT_CHANNEL_PARM) {
1134                 QETH_CARD_TEXT(card, 6, "hltchpar");
1135                 /* we don't have to handle this further */
1136                 intparm = 0;
1137         }
1138         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1139             (dstat & DEV_STAT_UNIT_CHECK) ||
1140             (cstat)) {
1141                 if (irb->esw.esw0.erw.cons) {
1142                         dev_warn(&channel->ccwdev->dev,
1143                                 "The qeth device driver failed to recover "
1144                                 "an error on the device\n");
1145                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1146                                 "0x%X dstat 0x%X\n",
1147                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1148                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1149                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1150                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1151                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1152                 }
1153                 if (intparm == QETH_RCD_PARM) {
1154                         channel->state = CH_STATE_DOWN;
1155                         goto out;
1156                 }
1157                 rc = qeth_get_problem(cdev, irb);
1158                 if (rc) {
1159                         qeth_clear_ipacmd_list(card);
1160                         qeth_schedule_recovery(card);
1161                         goto out;
1162                 }
1163         }
1164
1165         if (intparm == QETH_RCD_PARM) {
1166                 channel->state = CH_STATE_RCD_DONE;
1167                 goto out;
1168         }
1169         if (intparm) {
1170                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1171                 buffer->state = BUF_STATE_PROCESSED;
1172         }
1173         if (channel == &card->data)
1174                 return;
1175         if (channel == &card->read &&
1176             channel->state == CH_STATE_UP)
1177                 qeth_issue_next_read(card);
1178
1179         iob = channel->iob;
1180         index = channel->buf_no;
1181         while (iob[index].state == BUF_STATE_PROCESSED) {
1182                 if (iob[index].callback != NULL)
1183                         iob[index].callback(channel, iob + index);
1184
1185                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1186         }
1187         channel->buf_no = index;
1188 out:
1189         wake_up(&card->wait_q);
1190         return;
1191 }
1192
1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1194                 struct qeth_qdio_out_buffer *buf,
1195                 enum iucv_tx_notify notification)
1196 {
1197         struct sk_buff *skb;
1198
1199         if (skb_queue_empty(&buf->skb_list))
1200                 goto out;
1201         skb = skb_peek(&buf->skb_list);
1202         while (skb) {
1203                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1204                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1205                 if (skb->protocol == ETH_P_AF_IUCV) {
1206                         if (skb->sk) {
1207                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1208                                 iucv->sk_txnotify(skb, notification);
1209                         }
1210                 }
1211                 if (skb_queue_is_last(&buf->skb_list, skb))
1212                         skb = NULL;
1213                 else
1214                         skb = skb_queue_next(&buf->skb_list, skb);
1215         }
1216 out:
1217         return;
1218 }
1219
1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1221 {
1222         struct sk_buff *skb;
1223         struct iucv_sock *iucv;
1224         int notify_general_error = 0;
1225
1226         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1227                 notify_general_error = 1;
1228
1229         /* release may never happen from within CQ tasklet scope */
1230         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1231
1232         skb = skb_dequeue(&buf->skb_list);
1233         while (skb) {
1234                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1235                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1236                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1237                         if (skb->sk) {
1238                                 iucv = iucv_sk(skb->sk);
1239                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1240                         }
1241                 }
1242                 atomic_dec(&skb->users);
1243                 dev_kfree_skb_any(skb);
1244                 skb = skb_dequeue(&buf->skb_list);
1245         }
1246 }
1247
1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1249                 struct qeth_qdio_out_buffer *buf,
1250                 enum qeth_qdio_buffer_states newbufstate)
1251 {
1252         int i;
1253
1254         /* is PCI flag set on buffer? */
1255         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1256                 atomic_dec(&queue->set_pci_flags_count);
1257
1258         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1259                 qeth_release_skbs(buf);
1260         }
1261         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1262                 if (buf->buffer->element[i].addr && buf->is_header[i])
1263                         kmem_cache_free(qeth_core_header_cache,
1264                                 buf->buffer->element[i].addr);
1265                 buf->is_header[i] = 0;
1266                 buf->buffer->element[i].length = 0;
1267                 buf->buffer->element[i].addr = NULL;
1268                 buf->buffer->element[i].eflags = 0;
1269                 buf->buffer->element[i].sflags = 0;
1270         }
1271         buf->buffer->element[15].eflags = 0;
1272         buf->buffer->element[15].sflags = 0;
1273         buf->next_element_to_fill = 0;
1274         atomic_set(&buf->state, newbufstate);
1275 }
1276
1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1278 {
1279         int j;
1280
1281         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1282                 if (!q->bufs[j])
1283                         continue;
1284                 qeth_cleanup_handled_pending(q, j, 1);
1285                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1286                 if (free) {
1287                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1288                         q->bufs[j] = NULL;
1289                 }
1290         }
1291 }
1292
1293 void qeth_clear_qdio_buffers(struct qeth_card *card)
1294 {
1295         int i;
1296
1297         QETH_CARD_TEXT(card, 2, "clearqdbf");
1298         /* clear outbound buffers to free skbs */
1299         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1300                 if (card->qdio.out_qs[i]) {
1301                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1302                 }
1303         }
1304 }
1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1306
1307 static void qeth_free_buffer_pool(struct qeth_card *card)
1308 {
1309         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1310         int i = 0;
1311         list_for_each_entry_safe(pool_entry, tmp,
1312                                  &card->qdio.init_pool.entry_list, init_list){
1313                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1314                         free_page((unsigned long)pool_entry->elements[i]);
1315                 list_del(&pool_entry->init_list);
1316                 kfree(pool_entry);
1317         }
1318 }
1319
1320 static void qeth_clean_channel(struct qeth_channel *channel)
1321 {
1322         int cnt;
1323
1324         QETH_DBF_TEXT(SETUP, 2, "freech");
1325         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1326                 kfree(channel->iob[cnt].data);
1327 }
1328
1329 static void qeth_set_single_write_queues(struct qeth_card *card)
1330 {
1331         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1332             (card->qdio.no_out_queues == 4))
1333                 qeth_free_qdio_buffers(card);
1334
1335         card->qdio.no_out_queues = 1;
1336         if (card->qdio.default_out_queue != 0)
1337                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1338
1339         card->qdio.default_out_queue = 0;
1340 }
1341
1342 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1343 {
1344         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1345             (card->qdio.no_out_queues == 1)) {
1346                 qeth_free_qdio_buffers(card);
1347                 card->qdio.default_out_queue = 2;
1348         }
1349         card->qdio.no_out_queues = 4;
1350 }
1351
1352 static void qeth_update_from_chp_desc(struct qeth_card *card)
1353 {
1354         struct ccw_device *ccwdev;
1355         struct channel_path_desc *chp_dsc;
1356
1357         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1358
1359         ccwdev = card->data.ccwdev;
1360         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1361         if (!chp_dsc)
1362                 goto out;
1363
1364         card->info.func_level = 0x4100 + chp_dsc->desc;
1365         if (card->info.type == QETH_CARD_TYPE_IQD)
1366                 goto out;
1367
1368         /* CHPP field bit 6 == 1 -> single queue */
1369         if ((chp_dsc->chpp & 0x02) == 0x02)
1370                 qeth_set_single_write_queues(card);
1371         else
1372                 qeth_set_multiple_write_queues(card);
1373 out:
1374         kfree(chp_dsc);
1375         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1376         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1377 }
1378
1379 static void qeth_init_qdio_info(struct qeth_card *card)
1380 {
1381         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1382         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1383         /* inbound */
1384         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1385         if (card->info.type == QETH_CARD_TYPE_IQD)
1386                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1387         else
1388                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1389         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1390         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1391         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1392 }
1393
1394 static void qeth_set_intial_options(struct qeth_card *card)
1395 {
1396         card->options.route4.type = NO_ROUTER;
1397         card->options.route6.type = NO_ROUTER;
1398         card->options.fake_broadcast = 0;
1399         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1400         card->options.performance_stats = 0;
1401         card->options.rx_sg_cb = QETH_RX_SG_CB;
1402         card->options.isolation = ISOLATION_MODE_NONE;
1403         card->options.cq = QETH_CQ_DISABLED;
1404 }
1405
1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1407 {
1408         unsigned long flags;
1409         int rc = 0;
1410
1411         spin_lock_irqsave(&card->thread_mask_lock, flags);
1412         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1413                         (u8) card->thread_start_mask,
1414                         (u8) card->thread_allowed_mask,
1415                         (u8) card->thread_running_mask);
1416         rc = (card->thread_start_mask & thread);
1417         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1418         return rc;
1419 }
1420
1421 static void qeth_start_kernel_thread(struct work_struct *work)
1422 {
1423         struct task_struct *ts;
1424         struct qeth_card *card = container_of(work, struct qeth_card,
1425                                         kernel_thread_starter);
1426         QETH_CARD_TEXT(card , 2, "strthrd");
1427
1428         if (card->read.state != CH_STATE_UP &&
1429             card->write.state != CH_STATE_UP)
1430                 return;
1431         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1432                 ts = kthread_run(card->discipline->recover, (void *)card,
1433                                 "qeth_recover");
1434                 if (IS_ERR(ts)) {
1435                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1436                         qeth_clear_thread_running_bit(card,
1437                                 QETH_RECOVER_THREAD);
1438                 }
1439         }
1440 }
1441
1442 static void qeth_buffer_reclaim_work(struct work_struct *);
1443 static int qeth_setup_card(struct qeth_card *card)
1444 {
1445
1446         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1447         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1448
1449         card->read.state  = CH_STATE_DOWN;
1450         card->write.state = CH_STATE_DOWN;
1451         card->data.state  = CH_STATE_DOWN;
1452         card->state = CARD_STATE_DOWN;
1453         card->lan_online = 0;
1454         card->read_or_write_problem = 0;
1455         card->dev = NULL;
1456         spin_lock_init(&card->vlanlock);
1457         spin_lock_init(&card->mclock);
1458         spin_lock_init(&card->lock);
1459         spin_lock_init(&card->ip_lock);
1460         spin_lock_init(&card->thread_mask_lock);
1461         mutex_init(&card->conf_mutex);
1462         mutex_init(&card->discipline_mutex);
1463         card->thread_start_mask = 0;
1464         card->thread_allowed_mask = 0;
1465         card->thread_running_mask = 0;
1466         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1467         INIT_LIST_HEAD(&card->cmd_waiter_list);
1468         init_waitqueue_head(&card->wait_q);
1469         /* initial options */
1470         qeth_set_intial_options(card);
1471         /* IP address takeover */
1472         INIT_LIST_HEAD(&card->ipato.entries);
1473         card->ipato.enabled = 0;
1474         card->ipato.invert4 = 0;
1475         card->ipato.invert6 = 0;
1476         /* init QDIO stuff */
1477         qeth_init_qdio_info(card);
1478         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1479         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1480         return 0;
1481 }
1482
1483 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1484 {
1485         struct qeth_card *card = container_of(slr, struct qeth_card,
1486                                         qeth_service_level);
1487         if (card->info.mcl_level[0])
1488                 seq_printf(m, "qeth: %s firmware level %s\n",
1489                         CARD_BUS_ID(card), card->info.mcl_level);
1490 }
1491
1492 static struct qeth_card *qeth_alloc_card(void)
1493 {
1494         struct qeth_card *card;
1495
1496         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1497         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1498         if (!card)
1499                 goto out;
1500         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1501         if (qeth_setup_channel(&card->read))
1502                 goto out_ip;
1503         if (qeth_setup_channel(&card->write))
1504                 goto out_channel;
1505         card->options.layer2 = -1;
1506         card->qeth_service_level.seq_print = qeth_core_sl_print;
1507         register_service_level(&card->qeth_service_level);
1508         return card;
1509
1510 out_channel:
1511         qeth_clean_channel(&card->read);
1512 out_ip:
1513         kfree(card);
1514 out:
1515         return NULL;
1516 }
1517
1518 static int qeth_determine_card_type(struct qeth_card *card)
1519 {
1520         int i = 0;
1521
1522         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1523
1524         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1525         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1526         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1527                 if ((CARD_RDEV(card)->id.dev_type ==
1528                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1529                     (CARD_RDEV(card)->id.dev_model ==
1530                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1531                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1532                         card->qdio.no_out_queues =
1533                                 known_devices[i][QETH_QUEUE_NO_IND];
1534                         card->qdio.no_in_queues = 1;
1535                         card->info.is_multicast_different =
1536                                 known_devices[i][QETH_MULTICAST_IND];
1537                         qeth_update_from_chp_desc(card);
1538                         return 0;
1539                 }
1540                 i++;
1541         }
1542         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1543         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1544                 "unknown type\n");
1545         return -ENOENT;
1546 }
1547
1548 static int qeth_clear_channel(struct qeth_channel *channel)
1549 {
1550         unsigned long flags;
1551         struct qeth_card *card;
1552         int rc;
1553
1554         card = CARD_FROM_CDEV(channel->ccwdev);
1555         QETH_CARD_TEXT(card, 3, "clearch");
1556         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1557         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1558         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1559
1560         if (rc)
1561                 return rc;
1562         rc = wait_event_interruptible_timeout(card->wait_q,
1563                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1564         if (rc == -ERESTARTSYS)
1565                 return rc;
1566         if (channel->state != CH_STATE_STOPPED)
1567                 return -ETIME;
1568         channel->state = CH_STATE_DOWN;
1569         return 0;
1570 }
1571
1572 static int qeth_halt_channel(struct qeth_channel *channel)
1573 {
1574         unsigned long flags;
1575         struct qeth_card *card;
1576         int rc;
1577
1578         card = CARD_FROM_CDEV(channel->ccwdev);
1579         QETH_CARD_TEXT(card, 3, "haltch");
1580         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1581         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1582         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1583
1584         if (rc)
1585                 return rc;
1586         rc = wait_event_interruptible_timeout(card->wait_q,
1587                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1588         if (rc == -ERESTARTSYS)
1589                 return rc;
1590         if (channel->state != CH_STATE_HALTED)
1591                 return -ETIME;
1592         return 0;
1593 }
1594
1595 static int qeth_halt_channels(struct qeth_card *card)
1596 {
1597         int rc1 = 0, rc2 = 0, rc3 = 0;
1598
1599         QETH_CARD_TEXT(card, 3, "haltchs");
1600         rc1 = qeth_halt_channel(&card->read);
1601         rc2 = qeth_halt_channel(&card->write);
1602         rc3 = qeth_halt_channel(&card->data);
1603         if (rc1)
1604                 return rc1;
1605         if (rc2)
1606                 return rc2;
1607         return rc3;
1608 }
1609
1610 static int qeth_clear_channels(struct qeth_card *card)
1611 {
1612         int rc1 = 0, rc2 = 0, rc3 = 0;
1613
1614         QETH_CARD_TEXT(card, 3, "clearchs");
1615         rc1 = qeth_clear_channel(&card->read);
1616         rc2 = qeth_clear_channel(&card->write);
1617         rc3 = qeth_clear_channel(&card->data);
1618         if (rc1)
1619                 return rc1;
1620         if (rc2)
1621                 return rc2;
1622         return rc3;
1623 }
1624
1625 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1626 {
1627         int rc = 0;
1628
1629         QETH_CARD_TEXT(card, 3, "clhacrd");
1630
1631         if (halt)
1632                 rc = qeth_halt_channels(card);
1633         if (rc)
1634                 return rc;
1635         return qeth_clear_channels(card);
1636 }
1637
1638 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1639 {
1640         int rc = 0;
1641
1642         QETH_CARD_TEXT(card, 3, "qdioclr");
1643         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1644                 QETH_QDIO_CLEANING)) {
1645         case QETH_QDIO_ESTABLISHED:
1646                 if (card->info.type == QETH_CARD_TYPE_IQD)
1647                         rc = qdio_shutdown(CARD_DDEV(card),
1648                                 QDIO_FLAG_CLEANUP_USING_HALT);
1649                 else
1650                         rc = qdio_shutdown(CARD_DDEV(card),
1651                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1652                 if (rc)
1653                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1654                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1655                 break;
1656         case QETH_QDIO_CLEANING:
1657                 return rc;
1658         default:
1659                 break;
1660         }
1661         rc = qeth_clear_halt_card(card, use_halt);
1662         if (rc)
1663                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1664         card->state = CARD_STATE_DOWN;
1665         return rc;
1666 }
1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1668
1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1670                                int *length)
1671 {
1672         struct ciw *ciw;
1673         char *rcd_buf;
1674         int ret;
1675         struct qeth_channel *channel = &card->data;
1676         unsigned long flags;
1677
1678         /*
1679          * scan for RCD command in extended SenseID data
1680          */
1681         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1682         if (!ciw || ciw->cmd == 0)
1683                 return -EOPNOTSUPP;
1684         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1685         if (!rcd_buf)
1686                 return -ENOMEM;
1687
1688         channel->ccw.cmd_code = ciw->cmd;
1689         channel->ccw.cda = (__u32) __pa(rcd_buf);
1690         channel->ccw.count = ciw->count;
1691         channel->ccw.flags = CCW_FLAG_SLI;
1692         channel->state = CH_STATE_RCD;
1693         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1694         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1695                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1696                                        QETH_RCD_TIMEOUT);
1697         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1698         if (!ret)
1699                 wait_event(card->wait_q,
1700                            (channel->state == CH_STATE_RCD_DONE ||
1701                             channel->state == CH_STATE_DOWN));
1702         if (channel->state == CH_STATE_DOWN)
1703                 ret = -EIO;
1704         else
1705                 channel->state = CH_STATE_DOWN;
1706         if (ret) {
1707                 kfree(rcd_buf);
1708                 *buffer = NULL;
1709                 *length = 0;
1710         } else {
1711                 *length = ciw->count;
1712                 *buffer = rcd_buf;
1713         }
1714         return ret;
1715 }
1716
1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1718 {
1719         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1720         card->info.chpid = prcd[30];
1721         card->info.unit_addr2 = prcd[31];
1722         card->info.cula = prcd[63];
1723         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1724                                (prcd[0x11] == _ascebc['M']));
1725 }
1726
1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1728 {
1729         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1730
1731         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1732             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1733                 card->info.blkt.time_total = 0;
1734                 card->info.blkt.inter_packet = 0;
1735                 card->info.blkt.inter_packet_jumbo = 0;
1736         } else {
1737                 card->info.blkt.time_total = 250;
1738                 card->info.blkt.inter_packet = 5;
1739                 card->info.blkt.inter_packet_jumbo = 15;
1740         }
1741 }
1742
1743 static void qeth_init_tokens(struct qeth_card *card)
1744 {
1745         card->token.issuer_rm_w = 0x00010103UL;
1746         card->token.cm_filter_w = 0x00010108UL;
1747         card->token.cm_connection_w = 0x0001010aUL;
1748         card->token.ulp_filter_w = 0x0001010bUL;
1749         card->token.ulp_connection_w = 0x0001010dUL;
1750 }
1751
1752 static void qeth_init_func_level(struct qeth_card *card)
1753 {
1754         switch (card->info.type) {
1755         case QETH_CARD_TYPE_IQD:
1756                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1757                 break;
1758         case QETH_CARD_TYPE_OSD:
1759         case QETH_CARD_TYPE_OSN:
1760                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1761                 break;
1762         default:
1763                 break;
1764         }
1765 }
1766
1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1768                 void (*idx_reply_cb)(struct qeth_channel *,
1769                         struct qeth_cmd_buffer *))
1770 {
1771         struct qeth_cmd_buffer *iob;
1772         unsigned long flags;
1773         int rc;
1774         struct qeth_card *card;
1775
1776         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1777         card = CARD_FROM_CDEV(channel->ccwdev);
1778         iob = qeth_get_buffer(channel);
1779         if (!iob)
1780                 return -ENOMEM;
1781         iob->callback = idx_reply_cb;
1782         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1783         channel->ccw.count = QETH_BUFSIZE;
1784         channel->ccw.cda = (__u32) __pa(iob->data);
1785
1786         wait_event(card->wait_q,
1787                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1788         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1789         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1790         rc = ccw_device_start(channel->ccwdev,
1791                               &channel->ccw, (addr_t) iob, 0, 0);
1792         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1793
1794         if (rc) {
1795                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1796                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1797                 atomic_set(&channel->irq_pending, 0);
1798                 wake_up(&card->wait_q);
1799                 return rc;
1800         }
1801         rc = wait_event_interruptible_timeout(card->wait_q,
1802                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1803         if (rc == -ERESTARTSYS)
1804                 return rc;
1805         if (channel->state != CH_STATE_UP) {
1806                 rc = -ETIME;
1807                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1808                 qeth_clear_cmd_buffers(channel);
1809         } else
1810                 rc = 0;
1811         return rc;
1812 }
1813
1814 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1815                 void (*idx_reply_cb)(struct qeth_channel *,
1816                         struct qeth_cmd_buffer *))
1817 {
1818         struct qeth_card *card;
1819         struct qeth_cmd_buffer *iob;
1820         unsigned long flags;
1821         __u16 temp;
1822         __u8 tmp;
1823         int rc;
1824         struct ccw_dev_id temp_devid;
1825
1826         card = CARD_FROM_CDEV(channel->ccwdev);
1827
1828         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1829
1830         iob = qeth_get_buffer(channel);
1831         if (!iob)
1832                 return -ENOMEM;
1833         iob->callback = idx_reply_cb;
1834         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1835         channel->ccw.count = IDX_ACTIVATE_SIZE;
1836         channel->ccw.cda = (__u32) __pa(iob->data);
1837         if (channel == &card->write) {
1838                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1839                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1840                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1841                 card->seqno.trans_hdr++;
1842         } else {
1843                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1844                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1845                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1846         }
1847         tmp = ((__u8)card->info.portno) | 0x80;
1848         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1849         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1850                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1851         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1852                &card->info.func_level, sizeof(__u16));
1853         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1854         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1855         temp = (card->info.cula << 8) + card->info.unit_addr2;
1856         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1857
1858         wait_event(card->wait_q,
1859                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1860         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1861         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1862         rc = ccw_device_start(channel->ccwdev,
1863                               &channel->ccw, (addr_t) iob, 0, 0);
1864         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1865
1866         if (rc) {
1867                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1868                         rc);
1869                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1870                 atomic_set(&channel->irq_pending, 0);
1871                 wake_up(&card->wait_q);
1872                 return rc;
1873         }
1874         rc = wait_event_interruptible_timeout(card->wait_q,
1875                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1876         if (rc == -ERESTARTSYS)
1877                 return rc;
1878         if (channel->state != CH_STATE_ACTIVATING) {
1879                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1880                         " failed to recover an error on the device\n");
1881                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1882                         dev_name(&channel->ccwdev->dev));
1883                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1884                 qeth_clear_cmd_buffers(channel);
1885                 return -ETIME;
1886         }
1887         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1888 }
1889
1890 static int qeth_peer_func_level(int level)
1891 {
1892         if ((level & 0xff) == 8)
1893                 return (level & 0xff) + 0x400;
1894         if (((level >> 8) & 3) == 1)
1895                 return (level & 0xff) + 0x200;
1896         return level;
1897 }
1898
1899 static void qeth_idx_write_cb(struct qeth_channel *channel,
1900                 struct qeth_cmd_buffer *iob)
1901 {
1902         struct qeth_card *card;
1903         __u16 temp;
1904
1905         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1906
1907         if (channel->state == CH_STATE_DOWN) {
1908                 channel->state = CH_STATE_ACTIVATING;
1909                 goto out;
1910         }
1911         card = CARD_FROM_CDEV(channel->ccwdev);
1912
1913         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1914                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1915                         dev_err(&card->write.ccwdev->dev,
1916                                 "The adapter is used exclusively by another "
1917                                 "host\n");
1918                 else
1919                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1920                                 " negative reply\n",
1921                                 dev_name(&card->write.ccwdev->dev));
1922                 goto out;
1923         }
1924         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1925         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1926                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1927                         "function level mismatch (sent: 0x%x, received: "
1928                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1929                         card->info.func_level, temp);
1930                 goto out;
1931         }
1932         channel->state = CH_STATE_UP;
1933 out:
1934         qeth_release_buffer(channel, iob);
1935 }
1936
1937 static void qeth_idx_read_cb(struct qeth_channel *channel,
1938                 struct qeth_cmd_buffer *iob)
1939 {
1940         struct qeth_card *card;
1941         __u16 temp;
1942
1943         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1944         if (channel->state == CH_STATE_DOWN) {
1945                 channel->state = CH_STATE_ACTIVATING;
1946                 goto out;
1947         }
1948
1949         card = CARD_FROM_CDEV(channel->ccwdev);
1950         if (qeth_check_idx_response(card, iob->data))
1951                         goto out;
1952
1953         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1954                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1955                 case QETH_IDX_ACT_ERR_EXCL:
1956                         dev_err(&card->write.ccwdev->dev,
1957                                 "The adapter is used exclusively by another "
1958                                 "host\n");
1959                         break;
1960                 case QETH_IDX_ACT_ERR_AUTH:
1961                 case QETH_IDX_ACT_ERR_AUTH_USER:
1962                         dev_err(&card->read.ccwdev->dev,
1963                                 "Setting the device online failed because of "
1964                                 "insufficient authorization\n");
1965                         break;
1966                 default:
1967                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1968                                 " negative reply\n",
1969                                 dev_name(&card->read.ccwdev->dev));
1970                 }
1971                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1972                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1973                 goto out;
1974         }
1975
1976         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1977         if (temp != qeth_peer_func_level(card->info.func_level)) {
1978                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1979                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1980                         dev_name(&card->read.ccwdev->dev),
1981                         card->info.func_level, temp);
1982                 goto out;
1983         }
1984         memcpy(&card->token.issuer_rm_r,
1985                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1986                QETH_MPC_TOKEN_LENGTH);
1987         memcpy(&card->info.mcl_level[0],
1988                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1989         channel->state = CH_STATE_UP;
1990 out:
1991         qeth_release_buffer(channel, iob);
1992 }
1993
1994 void qeth_prepare_control_data(struct qeth_card *card, int len,
1995                 struct qeth_cmd_buffer *iob)
1996 {
1997         qeth_setup_ccw(&card->write, iob->data, len);
1998         iob->callback = qeth_release_buffer;
1999
2000         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2001                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2002         card->seqno.trans_hdr++;
2003         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2004                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2005         card->seqno.pdu_hdr++;
2006         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2007                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2008         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2009 }
2010 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2011
2012 /**
2013  * qeth_send_control_data() -   send control command to the card
2014  * @card:                       qeth_card structure pointer
2015  * @len:                        size of the command buffer
2016  * @iob:                        qeth_cmd_buffer pointer
2017  * @reply_cb:                   callback function pointer
2018  * @cb_card:                    pointer to the qeth_card structure
2019  * @cb_reply:                   pointer to the qeth_reply structure
2020  * @cb_cmd:                     pointer to the original iob for non-IPA
2021  *                              commands, or to the qeth_ipa_cmd structure
2022  *                              for the IPA commands.
2023  * @reply_param:                private pointer passed to the callback
2024  *
2025  * Returns the value of the `return_code' field of the response
2026  * block returned from the hardware, or other error indication.
2027  * Value of zero indicates successful execution of the command.
2028  *
2029  * Callback function gets called one or more times, with cb_cmd
2030  * pointing to the response returned by the hardware. Callback
2031  * function must return non-zero if more reply blocks are expected,
2032  * and zero if the last or only reply block is received. Callback
2033  * function can get the value of the reply_param pointer from the
2034  * field 'param' of the structure qeth_reply.
2035  */
2036
2037 int qeth_send_control_data(struct qeth_card *card, int len,
2038                 struct qeth_cmd_buffer *iob,
2039                 int (*reply_cb)(struct qeth_card *cb_card,
2040                                 struct qeth_reply *cb_reply,
2041                                 unsigned long cb_cmd),
2042                 void *reply_param)
2043 {
2044         int rc;
2045         unsigned long flags;
2046         struct qeth_reply *reply = NULL;
2047         unsigned long timeout, event_timeout;
2048         struct qeth_ipa_cmd *cmd;
2049
2050         QETH_CARD_TEXT(card, 2, "sendctl");
2051
2052         if (card->read_or_write_problem) {
2053                 qeth_release_buffer(iob->channel, iob);
2054                 return -EIO;
2055         }
2056         reply = qeth_alloc_reply(card);
2057         if (!reply) {
2058                 return -ENOMEM;
2059         }
2060         reply->callback = reply_cb;
2061         reply->param = reply_param;
2062         if (card->state == CARD_STATE_DOWN)
2063                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2064         else
2065                 reply->seqno = card->seqno.ipa++;
2066         init_waitqueue_head(&reply->wait_q);
2067         spin_lock_irqsave(&card->lock, flags);
2068         list_add_tail(&reply->list, &card->cmd_waiter_list);
2069         spin_unlock_irqrestore(&card->lock, flags);
2070         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2071
2072         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2073         qeth_prepare_control_data(card, len, iob);
2074
2075         if (IS_IPA(iob->data))
2076                 event_timeout = QETH_IPA_TIMEOUT;
2077         else
2078                 event_timeout = QETH_TIMEOUT;
2079         timeout = jiffies + event_timeout;
2080
2081         QETH_CARD_TEXT(card, 6, "noirqpnd");
2082         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2083         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2084                               (addr_t) iob, 0, 0);
2085         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2086         if (rc) {
2087                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2088                         "ccw_device_start rc = %i\n",
2089                         dev_name(&card->write.ccwdev->dev), rc);
2090                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2091                 spin_lock_irqsave(&card->lock, flags);
2092                 list_del_init(&reply->list);
2093                 qeth_put_reply(reply);
2094                 spin_unlock_irqrestore(&card->lock, flags);
2095                 qeth_release_buffer(iob->channel, iob);
2096                 atomic_set(&card->write.irq_pending, 0);
2097                 wake_up(&card->wait_q);
2098                 return rc;
2099         }
2100
2101         /* we have only one long running ipassist, since we can ensure
2102            process context of this command we can sleep */
2103         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2104         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2105             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2106                 if (!wait_event_timeout(reply->wait_q,
2107                     atomic_read(&reply->received), event_timeout))
2108                         goto time_err;
2109         } else {
2110                 while (!atomic_read(&reply->received)) {
2111                         if (time_after(jiffies, timeout))
2112                                 goto time_err;
2113                         cpu_relax();
2114                 }
2115         }
2116
2117         if (reply->rc == -EIO)
2118                 goto error;
2119         rc = reply->rc;
2120         qeth_put_reply(reply);
2121         return rc;
2122
2123 time_err:
2124         reply->rc = -ETIME;
2125         spin_lock_irqsave(&reply->card->lock, flags);
2126         list_del_init(&reply->list);
2127         spin_unlock_irqrestore(&reply->card->lock, flags);
2128         atomic_inc(&reply->received);
2129 error:
2130         atomic_set(&card->write.irq_pending, 0);
2131         qeth_release_buffer(iob->channel, iob);
2132         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2133         rc = reply->rc;
2134         qeth_put_reply(reply);
2135         return rc;
2136 }
2137 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2138
2139 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2140                 unsigned long data)
2141 {
2142         struct qeth_cmd_buffer *iob;
2143
2144         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2145
2146         iob = (struct qeth_cmd_buffer *) data;
2147         memcpy(&card->token.cm_filter_r,
2148                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2149                QETH_MPC_TOKEN_LENGTH);
2150         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2151         return 0;
2152 }
2153
2154 static int qeth_cm_enable(struct qeth_card *card)
2155 {
2156         int rc;
2157         struct qeth_cmd_buffer *iob;
2158
2159         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2160
2161         iob = qeth_wait_for_buffer(&card->write);
2162         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2163         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2164                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2165         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2166                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2167
2168         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2169                                     qeth_cm_enable_cb, NULL);
2170         return rc;
2171 }
2172
2173 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2174                 unsigned long data)
2175 {
2176
2177         struct qeth_cmd_buffer *iob;
2178
2179         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2180
2181         iob = (struct qeth_cmd_buffer *) data;
2182         memcpy(&card->token.cm_connection_r,
2183                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2184                QETH_MPC_TOKEN_LENGTH);
2185         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2186         return 0;
2187 }
2188
2189 static int qeth_cm_setup(struct qeth_card *card)
2190 {
2191         int rc;
2192         struct qeth_cmd_buffer *iob;
2193
2194         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2195
2196         iob = qeth_wait_for_buffer(&card->write);
2197         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2198         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2199                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2200         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2201                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2202         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2203                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2204         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2205                                     qeth_cm_setup_cb, NULL);
2206         return rc;
2207
2208 }
2209
2210 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2211 {
2212         switch (card->info.type) {
2213         case QETH_CARD_TYPE_UNKNOWN:
2214                 return 1500;
2215         case QETH_CARD_TYPE_IQD:
2216                 return card->info.max_mtu;
2217         case QETH_CARD_TYPE_OSD:
2218                 switch (card->info.link_type) {
2219                 case QETH_LINK_TYPE_HSTR:
2220                 case QETH_LINK_TYPE_LANE_TR:
2221                         return 2000;
2222                 default:
2223                         return card->options.layer2 ? 1500 : 1492;
2224                 }
2225         case QETH_CARD_TYPE_OSM:
2226         case QETH_CARD_TYPE_OSX:
2227                 return card->options.layer2 ? 1500 : 1492;
2228         default:
2229                 return 1500;
2230         }
2231 }
2232
2233 static inline int qeth_get_mtu_outof_framesize(int framesize)
2234 {
2235         switch (framesize) {
2236         case 0x4000:
2237                 return 8192;
2238         case 0x6000:
2239                 return 16384;
2240         case 0xa000:
2241                 return 32768;
2242         case 0xffff:
2243                 return 57344;
2244         default:
2245                 return 0;
2246         }
2247 }
2248
2249 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2250 {
2251         switch (card->info.type) {
2252         case QETH_CARD_TYPE_OSD:
2253         case QETH_CARD_TYPE_OSM:
2254         case QETH_CARD_TYPE_OSX:
2255         case QETH_CARD_TYPE_IQD:
2256                 return ((mtu >= 576) &&
2257                         (mtu <= card->info.max_mtu));
2258         case QETH_CARD_TYPE_OSN:
2259         case QETH_CARD_TYPE_UNKNOWN:
2260         default:
2261                 return 1;
2262         }
2263 }
2264
2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2266                 unsigned long data)
2267 {
2268
2269         __u16 mtu, framesize;
2270         __u16 len;
2271         __u8 link_type;
2272         struct qeth_cmd_buffer *iob;
2273
2274         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2275
2276         iob = (struct qeth_cmd_buffer *) data;
2277         memcpy(&card->token.ulp_filter_r,
2278                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2279                QETH_MPC_TOKEN_LENGTH);
2280         if (card->info.type == QETH_CARD_TYPE_IQD) {
2281                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2282                 mtu = qeth_get_mtu_outof_framesize(framesize);
2283                 if (!mtu) {
2284                         iob->rc = -EINVAL;
2285                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2286                         return 0;
2287                 }
2288                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2289                         /* frame size has changed */
2290                         if (card->dev &&
2291                             ((card->dev->mtu == card->info.initial_mtu) ||
2292                              (card->dev->mtu > mtu)))
2293                                 card->dev->mtu = mtu;
2294                         qeth_free_qdio_buffers(card);
2295                 }
2296                 card->info.initial_mtu = mtu;
2297                 card->info.max_mtu = mtu;
2298                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2299         } else {
2300                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2301                         iob->data);
2302                 card->info.initial_mtu = min(card->info.max_mtu,
2303                                         qeth_get_initial_mtu_for_card(card));
2304                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2305         }
2306
2307         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2308         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2309                 memcpy(&link_type,
2310                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2311                 card->info.link_type = link_type;
2312         } else
2313                 card->info.link_type = 0;
2314         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2315         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2316         return 0;
2317 }
2318
2319 static int qeth_ulp_enable(struct qeth_card *card)
2320 {
2321         int rc;
2322         char prot_type;
2323         struct qeth_cmd_buffer *iob;
2324
2325         /*FIXME: trace view callbacks*/
2326         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2327
2328         iob = qeth_wait_for_buffer(&card->write);
2329         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2330
2331         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2332                 (__u8) card->info.portno;
2333         if (card->options.layer2)
2334                 if (card->info.type == QETH_CARD_TYPE_OSN)
2335                         prot_type = QETH_PROT_OSN2;
2336                 else
2337                         prot_type = QETH_PROT_LAYER2;
2338         else
2339                 prot_type = QETH_PROT_TCPIP;
2340
2341         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2342         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2343                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2344         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2345                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2346         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2347                                     qeth_ulp_enable_cb, NULL);
2348         return rc;
2349
2350 }
2351
2352 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2353                 unsigned long data)
2354 {
2355         struct qeth_cmd_buffer *iob;
2356
2357         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2358
2359         iob = (struct qeth_cmd_buffer *) data;
2360         memcpy(&card->token.ulp_connection_r,
2361                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2362                QETH_MPC_TOKEN_LENGTH);
2363         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2364                      3)) {
2365                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2366                 dev_err(&card->gdev->dev, "A connection could not be "
2367                         "established because of an OLM limit\n");
2368                 iob->rc = -EMLINK;
2369         }
2370         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2371         return 0;
2372 }
2373
2374 static int qeth_ulp_setup(struct qeth_card *card)
2375 {
2376         int rc;
2377         __u16 temp;
2378         struct qeth_cmd_buffer *iob;
2379         struct ccw_dev_id dev_id;
2380
2381         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2382
2383         iob = qeth_wait_for_buffer(&card->write);
2384         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2385
2386         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2387                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2388         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2389                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2390         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2391                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2392
2393         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2394         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2395         temp = (card->info.cula << 8) + card->info.unit_addr2;
2396         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2397         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2398                                     qeth_ulp_setup_cb, NULL);
2399         return rc;
2400 }
2401
2402 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2403 {
2404         int rc;
2405         struct qeth_qdio_out_buffer *newbuf;
2406
2407         rc = 0;
2408         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2409         if (!newbuf) {
2410                 rc = -ENOMEM;
2411                 goto out;
2412         }
2413         newbuf->buffer = q->qdio_bufs[bidx];
2414         skb_queue_head_init(&newbuf->skb_list);
2415         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2416         newbuf->q = q;
2417         newbuf->aob = NULL;
2418         newbuf->next_pending = q->bufs[bidx];
2419         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2420         q->bufs[bidx] = newbuf;
2421         if (q->bufstates) {
2422                 q->bufstates[bidx].user = newbuf;
2423                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2424                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2425                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2426                                 (long) newbuf->next_pending);
2427         }
2428 out:
2429         return rc;
2430 }
2431
2432 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2433 {
2434         if (!q)
2435                 return;
2436
2437         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2438         kfree(q);
2439 }
2440
2441 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2442 {
2443         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2444
2445         if (!q)
2446                 return NULL;
2447
2448         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2449                 kfree(q);
2450                 return NULL;
2451         }
2452         return q;
2453 }
2454
2455 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2456 {
2457         int i, j;
2458
2459         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2460
2461         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2462                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2463                 return 0;
2464
2465         QETH_DBF_TEXT(SETUP, 2, "inq");
2466         card->qdio.in_q = qeth_alloc_qdio_queue();
2467         if (!card->qdio.in_q)
2468                 goto out_nomem;
2469
2470         /* inbound buffer pool */
2471         if (qeth_alloc_buffer_pool(card))
2472                 goto out_freeinq;
2473
2474         /* outbound */
2475         card->qdio.out_qs =
2476                 kzalloc(card->qdio.no_out_queues *
2477                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2478         if (!card->qdio.out_qs)
2479                 goto out_freepool;
2480         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2481                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2482                 if (!card->qdio.out_qs[i])
2483                         goto out_freeoutq;
2484                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2485                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2486                 card->qdio.out_qs[i]->queue_no = i;
2487                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2488                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2489                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2490                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2491                                 goto out_freeoutqbufs;
2492                 }
2493         }
2494
2495         /* completion */
2496         if (qeth_alloc_cq(card))
2497                 goto out_freeoutq;
2498
2499         return 0;
2500
2501 out_freeoutqbufs:
2502         while (j > 0) {
2503                 --j;
2504                 kmem_cache_free(qeth_qdio_outbuf_cache,
2505                                 card->qdio.out_qs[i]->bufs[j]);
2506                 card->qdio.out_qs[i]->bufs[j] = NULL;
2507         }
2508 out_freeoutq:
2509         while (i > 0) {
2510                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2511                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2512         }
2513         kfree(card->qdio.out_qs);
2514         card->qdio.out_qs = NULL;
2515 out_freepool:
2516         qeth_free_buffer_pool(card);
2517 out_freeinq:
2518         qeth_free_qdio_queue(card->qdio.in_q);
2519         card->qdio.in_q = NULL;
2520 out_nomem:
2521         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2522         return -ENOMEM;
2523 }
2524
2525 static void qeth_free_qdio_buffers(struct qeth_card *card)
2526 {
2527         int i, j;
2528
2529         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2530                 QETH_QDIO_UNINITIALIZED)
2531                 return;
2532
2533         qeth_free_cq(card);
2534         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2535         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2536                 if (card->qdio.in_q->bufs[j].rx_skb)
2537                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2538         }
2539         qeth_free_qdio_queue(card->qdio.in_q);
2540         card->qdio.in_q = NULL;
2541         /* inbound buffer pool */
2542         qeth_free_buffer_pool(card);
2543         /* free outbound qdio_qs */
2544         if (card->qdio.out_qs) {
2545                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2546                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2547                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2548                 }
2549                 kfree(card->qdio.out_qs);
2550                 card->qdio.out_qs = NULL;
2551         }
2552 }
2553
2554 static void qeth_create_qib_param_field(struct qeth_card *card,
2555                 char *param_field)
2556 {
2557
2558         param_field[0] = _ascebc['P'];
2559         param_field[1] = _ascebc['C'];
2560         param_field[2] = _ascebc['I'];
2561         param_field[3] = _ascebc['T'];
2562         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2563         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2564         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2565 }
2566
2567 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2568                 char *param_field)
2569 {
2570         param_field[16] = _ascebc['B'];
2571         param_field[17] = _ascebc['L'];
2572         param_field[18] = _ascebc['K'];
2573         param_field[19] = _ascebc['T'];
2574         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2575         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2576         *((unsigned int *) (&param_field[28])) =
2577                 card->info.blkt.inter_packet_jumbo;
2578 }
2579
2580 static int qeth_qdio_activate(struct qeth_card *card)
2581 {
2582         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2583         return qdio_activate(CARD_DDEV(card));
2584 }
2585
2586 static int qeth_dm_act(struct qeth_card *card)
2587 {
2588         int rc;
2589         struct qeth_cmd_buffer *iob;
2590
2591         QETH_DBF_TEXT(SETUP, 2, "dmact");
2592
2593         iob = qeth_wait_for_buffer(&card->write);
2594         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2595
2596         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2597                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2598         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2599                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2600         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2601         return rc;
2602 }
2603
2604 static int qeth_mpc_initialize(struct qeth_card *card)
2605 {
2606         int rc;
2607
2608         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2609
2610         rc = qeth_issue_next_read(card);
2611         if (rc) {
2612                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2613                 return rc;
2614         }
2615         rc = qeth_cm_enable(card);
2616         if (rc) {
2617                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2618                 goto out_qdio;
2619         }
2620         rc = qeth_cm_setup(card);
2621         if (rc) {
2622                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2623                 goto out_qdio;
2624         }
2625         rc = qeth_ulp_enable(card);
2626         if (rc) {
2627                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2628                 goto out_qdio;
2629         }
2630         rc = qeth_ulp_setup(card);
2631         if (rc) {
2632                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2633                 goto out_qdio;
2634         }
2635         rc = qeth_alloc_qdio_buffers(card);
2636         if (rc) {
2637                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2638                 goto out_qdio;
2639         }
2640         rc = qeth_qdio_establish(card);
2641         if (rc) {
2642                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2643                 qeth_free_qdio_buffers(card);
2644                 goto out_qdio;
2645         }
2646         rc = qeth_qdio_activate(card);
2647         if (rc) {
2648                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2649                 goto out_qdio;
2650         }
2651         rc = qeth_dm_act(card);
2652         if (rc) {
2653                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2654                 goto out_qdio;
2655         }
2656
2657         return 0;
2658 out_qdio:
2659         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2660         qdio_free(CARD_DDEV(card));
2661         return rc;
2662 }
2663
2664 void qeth_print_status_message(struct qeth_card *card)
2665 {
2666         switch (card->info.type) {
2667         case QETH_CARD_TYPE_OSD:
2668         case QETH_CARD_TYPE_OSM:
2669         case QETH_CARD_TYPE_OSX:
2670                 /* VM will use a non-zero first character
2671                  * to indicate a HiperSockets like reporting
2672                  * of the level OSA sets the first character to zero
2673                  * */
2674                 if (!card->info.mcl_level[0]) {
2675                         sprintf(card->info.mcl_level, "%02x%02x",
2676                                 card->info.mcl_level[2],
2677                                 card->info.mcl_level[3]);
2678                         break;
2679                 }
2680                 /* fallthrough */
2681         case QETH_CARD_TYPE_IQD:
2682                 if ((card->info.guestlan) ||
2683                     (card->info.mcl_level[0] & 0x80)) {
2684                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2685                                 card->info.mcl_level[0]];
2686                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2687                                 card->info.mcl_level[1]];
2688                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2689                                 card->info.mcl_level[2]];
2690                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2691                                 card->info.mcl_level[3]];
2692                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2693                 }
2694                 break;
2695         default:
2696                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2697         }
2698         dev_info(&card->gdev->dev,
2699                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2700                  qeth_get_cardname(card),
2701                  (card->info.mcl_level[0]) ? " (level: " : "",
2702                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2703                  (card->info.mcl_level[0]) ? ")" : "",
2704                  qeth_get_cardname_short(card));
2705 }
2706 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2707
2708 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2709 {
2710         struct qeth_buffer_pool_entry *entry;
2711
2712         QETH_CARD_TEXT(card, 5, "inwrklst");
2713
2714         list_for_each_entry(entry,
2715                             &card->qdio.init_pool.entry_list, init_list) {
2716                 qeth_put_buffer_pool_entry(card, entry);
2717         }
2718 }
2719
2720 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2721                 struct qeth_card *card)
2722 {
2723         struct list_head *plh;
2724         struct qeth_buffer_pool_entry *entry;
2725         int i, free;
2726         struct page *page;
2727
2728         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2729                 return NULL;
2730
2731         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2732                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2733                 free = 1;
2734                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2735                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2736                                 free = 0;
2737                                 break;
2738                         }
2739                 }
2740                 if (free) {
2741                         list_del_init(&entry->list);
2742                         return entry;
2743                 }
2744         }
2745
2746         /* no free buffer in pool so take first one and swap pages */
2747         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2748                         struct qeth_buffer_pool_entry, list);
2749         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2750                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2751                         page = alloc_page(GFP_ATOMIC);
2752                         if (!page) {
2753                                 return NULL;
2754                         } else {
2755                                 free_page((unsigned long)entry->elements[i]);
2756                                 entry->elements[i] = page_address(page);
2757                                 if (card->options.performance_stats)
2758                                         card->perf_stats.sg_alloc_page_rx++;
2759                         }
2760                 }
2761         }
2762         list_del_init(&entry->list);
2763         return entry;
2764 }
2765
2766 static int qeth_init_input_buffer(struct qeth_card *card,
2767                 struct qeth_qdio_buffer *buf)
2768 {
2769         struct qeth_buffer_pool_entry *pool_entry;
2770         int i;
2771
2772         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2773                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2774                 if (!buf->rx_skb)
2775                         return 1;
2776         }
2777
2778         pool_entry = qeth_find_free_buffer_pool_entry(card);
2779         if (!pool_entry)
2780                 return 1;
2781
2782         /*
2783          * since the buffer is accessed only from the input_tasklet
2784          * there shouldn't be a need to synchronize; also, since we use
2785          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2786          * buffers
2787          */
2788
2789         buf->pool_entry = pool_entry;
2790         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2791                 buf->buffer->element[i].length = PAGE_SIZE;
2792                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2793                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2794                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2795                 else
2796                         buf->buffer->element[i].eflags = 0;
2797                 buf->buffer->element[i].sflags = 0;
2798         }
2799         return 0;
2800 }
2801
2802 int qeth_init_qdio_queues(struct qeth_card *card)
2803 {
2804         int i, j;
2805         int rc;
2806
2807         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2808
2809         /* inbound queue */
2810         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2811                            QDIO_MAX_BUFFERS_PER_Q);
2812         qeth_initialize_working_pool_list(card);
2813         /*give only as many buffers to hardware as we have buffer pool entries*/
2814         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2815                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2816         card->qdio.in_q->next_buf_to_init =
2817                 card->qdio.in_buf_pool.buf_count - 1;
2818         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2819                      card->qdio.in_buf_pool.buf_count - 1);
2820         if (rc) {
2821                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2822                 return rc;
2823         }
2824
2825         /* completion */
2826         rc = qeth_cq_init(card);
2827         if (rc) {
2828                 return rc;
2829         }
2830
2831         /* outbound queue */
2832         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2833                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2834                                    QDIO_MAX_BUFFERS_PER_Q);
2835                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2836                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2837                                         card->qdio.out_qs[i]->bufs[j],
2838                                         QETH_QDIO_BUF_EMPTY);
2839                 }
2840                 card->qdio.out_qs[i]->card = card;
2841                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2842                 card->qdio.out_qs[i]->do_pack = 0;
2843                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2844                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2845                 atomic_set(&card->qdio.out_qs[i]->state,
2846                            QETH_OUT_Q_UNLOCKED);
2847         }
2848         return 0;
2849 }
2850 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2851
2852 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2853 {
2854         switch (link_type) {
2855         case QETH_LINK_TYPE_HSTR:
2856                 return 2;
2857         default:
2858                 return 1;
2859         }
2860 }
2861
2862 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2863                 struct qeth_ipa_cmd *cmd, __u8 command,
2864                 enum qeth_prot_versions prot)
2865 {
2866         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2867         cmd->hdr.command = command;
2868         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2869         cmd->hdr.seqno = card->seqno.ipa;
2870         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2871         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2872         if (card->options.layer2)
2873                 cmd->hdr.prim_version_no = 2;
2874         else
2875                 cmd->hdr.prim_version_no = 1;
2876         cmd->hdr.param_count = 1;
2877         cmd->hdr.prot_version = prot;
2878         cmd->hdr.ipa_supported = 0;
2879         cmd->hdr.ipa_enabled = 0;
2880 }
2881
2882 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2883                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2884 {
2885         struct qeth_cmd_buffer *iob;
2886         struct qeth_ipa_cmd *cmd;
2887
2888         iob = qeth_get_buffer(&card->write);
2889         if (iob) {
2890                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2891                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2892         } else {
2893                 dev_warn(&card->gdev->dev,
2894                          "The qeth driver ran out of channel command buffers\n");
2895                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2896                                  dev_name(&card->gdev->dev));
2897         }
2898
2899         return iob;
2900 }
2901 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2902
2903 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2904                 char prot_type)
2905 {
2906         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2907         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2908         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2909                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2910 }
2911 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2912
2913 /**
2914  * qeth_send_ipa_cmd() - send an IPA command
2915  *
2916  * See qeth_send_control_data() for explanation of the arguments.
2917  */
2918
2919 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2920                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2921                         unsigned long),
2922                 void *reply_param)
2923 {
2924         int rc;
2925         char prot_type;
2926
2927         QETH_CARD_TEXT(card, 4, "sendipa");
2928
2929         if (card->options.layer2)
2930                 if (card->info.type == QETH_CARD_TYPE_OSN)
2931                         prot_type = QETH_PROT_OSN2;
2932                 else
2933                         prot_type = QETH_PROT_LAYER2;
2934         else
2935                 prot_type = QETH_PROT_TCPIP;
2936         qeth_prepare_ipa_cmd(card, iob, prot_type);
2937         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2938                                                 iob, reply_cb, reply_param);
2939         if (rc == -ETIME) {
2940                 qeth_clear_ipacmd_list(card);
2941                 qeth_schedule_recovery(card);
2942         }
2943         return rc;
2944 }
2945 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2946
2947 static int qeth_send_startlan(struct qeth_card *card)
2948 {
2949         int rc;
2950         struct qeth_cmd_buffer *iob;
2951
2952         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2953
2954         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2955         if (!iob)
2956                 return -ENOMEM;
2957         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2958         return rc;
2959 }
2960
2961 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2962                 struct qeth_reply *reply, unsigned long data)
2963 {
2964         struct qeth_ipa_cmd *cmd;
2965
2966         QETH_CARD_TEXT(card, 4, "defadpcb");
2967
2968         cmd = (struct qeth_ipa_cmd *) data;
2969         if (cmd->hdr.return_code == 0)
2970                 cmd->hdr.return_code =
2971                         cmd->data.setadapterparms.hdr.return_code;
2972         return 0;
2973 }
2974
2975 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2976                 struct qeth_reply *reply, unsigned long data)
2977 {
2978         struct qeth_ipa_cmd *cmd;
2979
2980         QETH_CARD_TEXT(card, 3, "quyadpcb");
2981
2982         cmd = (struct qeth_ipa_cmd *) data;
2983         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2984                 card->info.link_type =
2985                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2986                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2987         }
2988         card->options.adp.supported_funcs =
2989                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2990         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2991 }
2992
2993 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2994                 __u32 command, __u32 cmdlen)
2995 {
2996         struct qeth_cmd_buffer *iob;
2997         struct qeth_ipa_cmd *cmd;
2998
2999         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3000                                      QETH_PROT_IPV4);
3001         if (iob) {
3002                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3003                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3004                 cmd->data.setadapterparms.hdr.command_code = command;
3005                 cmd->data.setadapterparms.hdr.used_total = 1;
3006                 cmd->data.setadapterparms.hdr.seq_no = 1;
3007         }
3008
3009         return iob;
3010 }
3011
3012 int qeth_query_setadapterparms(struct qeth_card *card)
3013 {
3014         int rc;
3015         struct qeth_cmd_buffer *iob;
3016
3017         QETH_CARD_TEXT(card, 3, "queryadp");
3018         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3019                                    sizeof(struct qeth_ipacmd_setadpparms));
3020         if (!iob)
3021                 return -ENOMEM;
3022         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3023         return rc;
3024 }
3025 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3026
3027 static int qeth_query_ipassists_cb(struct qeth_card *card,
3028                 struct qeth_reply *reply, unsigned long data)
3029 {
3030         struct qeth_ipa_cmd *cmd;
3031
3032         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3033
3034         cmd = (struct qeth_ipa_cmd *) data;
3035
3036         switch (cmd->hdr.return_code) {
3037         case IPA_RC_NOTSUPP:
3038         case IPA_RC_L2_UNSUPPORTED_CMD:
3039                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3040                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3041                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3042                 return -0;
3043         default:
3044                 if (cmd->hdr.return_code) {
3045                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3046                                                 "rc=%d\n",
3047                                                 dev_name(&card->gdev->dev),
3048                                                 cmd->hdr.return_code);
3049                         return 0;
3050                 }
3051         }
3052
3053         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3054                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3055                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3056         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3057                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3058                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3059         } else
3060                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3061                                         "\n", dev_name(&card->gdev->dev));
3062         return 0;
3063 }
3064
3065 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3066 {
3067         int rc;
3068         struct qeth_cmd_buffer *iob;
3069
3070         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3071         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3072         if (!iob)
3073                 return -ENOMEM;
3074         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3075         return rc;
3076 }
3077 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3078
3079 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3080                                 struct qeth_reply *reply, unsigned long data)
3081 {
3082         struct qeth_ipa_cmd *cmd;
3083         struct qeth_switch_info *sw_info;
3084         struct qeth_query_switch_attributes *attrs;
3085
3086         QETH_CARD_TEXT(card, 2, "qswiatcb");
3087         cmd = (struct qeth_ipa_cmd *) data;
3088         sw_info = (struct qeth_switch_info *)reply->param;
3089         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3090                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3091                 sw_info->capabilities = attrs->capabilities;
3092                 sw_info->settings = attrs->settings;
3093                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3094                                                         sw_info->settings);
3095         }
3096         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3097
3098         return 0;
3099 }
3100
3101 int qeth_query_switch_attributes(struct qeth_card *card,
3102                                  struct qeth_switch_info *sw_info)
3103 {
3104         struct qeth_cmd_buffer *iob;
3105
3106         QETH_CARD_TEXT(card, 2, "qswiattr");
3107         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3108                 return -EOPNOTSUPP;
3109         if (!netif_carrier_ok(card->dev))
3110                 return -ENOMEDIUM;
3111         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3112                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3113         if (!iob)
3114                 return -ENOMEM;
3115         return qeth_send_ipa_cmd(card, iob,
3116                                 qeth_query_switch_attributes_cb, sw_info);
3117 }
3118 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3119
3120 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3121                 struct qeth_reply *reply, unsigned long data)
3122 {
3123         struct qeth_ipa_cmd *cmd;
3124         __u16 rc;
3125
3126         cmd = (struct qeth_ipa_cmd *)data;
3127         rc = cmd->hdr.return_code;
3128         if (rc)
3129                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3130         else
3131                 card->info.diagass_support = cmd->data.diagass.ext;
3132         return 0;
3133 }
3134
3135 static int qeth_query_setdiagass(struct qeth_card *card)
3136 {
3137         struct qeth_cmd_buffer *iob;
3138         struct qeth_ipa_cmd    *cmd;
3139
3140         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3141         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3142         if (!iob)
3143                 return -ENOMEM;
3144         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3145         cmd->data.diagass.subcmd_len = 16;
3146         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3147         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3148 }
3149
3150 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3151 {
3152         unsigned long info = get_zeroed_page(GFP_KERNEL);
3153         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3154         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3155         struct ccw_dev_id ccwid;
3156         int level;
3157
3158         tid->chpid = card->info.chpid;
3159         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3160         tid->ssid = ccwid.ssid;
3161         tid->devno = ccwid.devno;
3162         if (!info)
3163                 return;
3164         level = stsi(NULL, 0, 0, 0);
3165         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3166                 tid->lparnr = info222->lpar_number;
3167         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3168                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3169                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3170         }
3171         free_page(info);
3172         return;
3173 }
3174
3175 static int qeth_hw_trap_cb(struct qeth_card *card,
3176                 struct qeth_reply *reply, unsigned long data)
3177 {
3178         struct qeth_ipa_cmd *cmd;
3179         __u16 rc;
3180
3181         cmd = (struct qeth_ipa_cmd *)data;
3182         rc = cmd->hdr.return_code;
3183         if (rc)
3184                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3185         return 0;
3186 }
3187
3188 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3189 {
3190         struct qeth_cmd_buffer *iob;
3191         struct qeth_ipa_cmd *cmd;
3192
3193         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3194         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3195         if (!iob)
3196                 return -ENOMEM;
3197         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3198         cmd->data.diagass.subcmd_len = 80;
3199         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3200         cmd->data.diagass.type = 1;
3201         cmd->data.diagass.action = action;
3202         switch (action) {
3203         case QETH_DIAGS_TRAP_ARM:
3204                 cmd->data.diagass.options = 0x0003;
3205                 cmd->data.diagass.ext = 0x00010000 +
3206                         sizeof(struct qeth_trap_id);
3207                 qeth_get_trap_id(card,
3208                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3209                 break;
3210         case QETH_DIAGS_TRAP_DISARM:
3211                 cmd->data.diagass.options = 0x0001;
3212                 break;
3213         case QETH_DIAGS_TRAP_CAPTURE:
3214                 break;
3215         }
3216         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3217 }
3218 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3219
3220 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3221                 unsigned int qdio_error, const char *dbftext)
3222 {
3223         if (qdio_error) {
3224                 QETH_CARD_TEXT(card, 2, dbftext);
3225                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3226                                buf->element[15].sflags);
3227                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3228                                buf->element[14].sflags);
3229                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3230                 if ((buf->element[15].sflags) == 0x12) {
3231                         card->stats.rx_dropped++;
3232                         return 0;
3233                 } else
3234                         return 1;
3235         }
3236         return 0;
3237 }
3238 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3239
3240 static void qeth_buffer_reclaim_work(struct work_struct *work)
3241 {
3242         struct qeth_card *card = container_of(work, struct qeth_card,
3243                 buffer_reclaim_work.work);
3244
3245         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3246         qeth_queue_input_buffer(card, card->reclaim_index);
3247 }
3248
3249 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3250 {
3251         struct qeth_qdio_q *queue = card->qdio.in_q;
3252         struct list_head *lh;
3253         int count;
3254         int i;
3255         int rc;
3256         int newcount = 0;
3257
3258         count = (index < queue->next_buf_to_init)?
3259                 card->qdio.in_buf_pool.buf_count -
3260                 (queue->next_buf_to_init - index) :
3261                 card->qdio.in_buf_pool.buf_count -
3262                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3263         /* only requeue at a certain threshold to avoid SIGAs */
3264         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3265                 for (i = queue->next_buf_to_init;
3266                      i < queue->next_buf_to_init + count; ++i) {
3267                         if (qeth_init_input_buffer(card,
3268                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3269                                 break;
3270                         } else {
3271                                 newcount++;
3272                         }
3273                 }
3274
3275                 if (newcount < count) {
3276                         /* we are in memory shortage so we switch back to
3277                            traditional skb allocation and drop packages */
3278                         atomic_set(&card->force_alloc_skb, 3);
3279                         count = newcount;
3280                 } else {
3281                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3282                 }
3283
3284                 if (!count) {
3285                         i = 0;
3286                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3287                                 i++;
3288                         if (i == card->qdio.in_buf_pool.buf_count) {
3289                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3290                                 card->reclaim_index = index;
3291                                 schedule_delayed_work(
3292                                         &card->buffer_reclaim_work,
3293                                         QETH_RECLAIM_WORK_TIME);
3294                         }
3295                         return;
3296                 }
3297
3298                 /*
3299                  * according to old code it should be avoided to requeue all
3300                  * 128 buffers in order to benefit from PCI avoidance.
3301                  * this function keeps at least one buffer (the buffer at
3302                  * 'index') un-requeued -> this buffer is the first buffer that
3303                  * will be requeued the next time
3304                  */
3305                 if (card->options.performance_stats) {
3306                         card->perf_stats.inbound_do_qdio_cnt++;
3307                         card->perf_stats.inbound_do_qdio_start_time =
3308                                 qeth_get_micros();
3309                 }
3310                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3311                              queue->next_buf_to_init, count);
3312                 if (card->options.performance_stats)
3313                         card->perf_stats.inbound_do_qdio_time +=
3314                                 qeth_get_micros() -
3315                                 card->perf_stats.inbound_do_qdio_start_time;
3316                 if (rc) {
3317                         QETH_CARD_TEXT(card, 2, "qinberr");
3318                 }
3319                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3320                                           QDIO_MAX_BUFFERS_PER_Q;
3321         }
3322 }
3323 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3324
3325 static int qeth_handle_send_error(struct qeth_card *card,
3326                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3327 {
3328         int sbalf15 = buffer->buffer->element[15].sflags;
3329
3330         QETH_CARD_TEXT(card, 6, "hdsnderr");
3331         if (card->info.type == QETH_CARD_TYPE_IQD) {
3332                 if (sbalf15 == 0) {
3333                         qdio_err = 0;
3334                 } else {
3335                         qdio_err = 1;
3336                 }
3337         }
3338         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3339
3340         if (!qdio_err)
3341                 return QETH_SEND_ERROR_NONE;
3342
3343         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3344                 return QETH_SEND_ERROR_RETRY;
3345
3346         QETH_CARD_TEXT(card, 1, "lnkfail");
3347         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3348                        (u16)qdio_err, (u8)sbalf15);
3349         return QETH_SEND_ERROR_LINK_FAILURE;
3350 }
3351
3352 /*
3353  * Switched to packing state if the number of used buffers on a queue
3354  * reaches a certain limit.
3355  */
3356 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3357 {
3358         if (!queue->do_pack) {
3359                 if (atomic_read(&queue->used_buffers)
3360                     >= QETH_HIGH_WATERMARK_PACK){
3361                         /* switch non-PACKING -> PACKING */
3362                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3363                         if (queue->card->options.performance_stats)
3364                                 queue->card->perf_stats.sc_dp_p++;
3365                         queue->do_pack = 1;
3366                 }
3367         }
3368 }
3369
3370 /*
3371  * Switches from packing to non-packing mode. If there is a packing
3372  * buffer on the queue this buffer will be prepared to be flushed.
3373  * In that case 1 is returned to inform the caller. If no buffer
3374  * has to be flushed, zero is returned.
3375  */
3376 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3377 {
3378         struct qeth_qdio_out_buffer *buffer;
3379         int flush_count = 0;
3380
3381         if (queue->do_pack) {
3382                 if (atomic_read(&queue->used_buffers)
3383                     <= QETH_LOW_WATERMARK_PACK) {
3384                         /* switch PACKING -> non-PACKING */
3385                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3386                         if (queue->card->options.performance_stats)
3387                                 queue->card->perf_stats.sc_p_dp++;
3388                         queue->do_pack = 0;
3389                         /* flush packing buffers */
3390                         buffer = queue->bufs[queue->next_buf_to_fill];
3391                         if ((atomic_read(&buffer->state) ==
3392                                                 QETH_QDIO_BUF_EMPTY) &&
3393                             (buffer->next_element_to_fill > 0)) {
3394                                 atomic_set(&buffer->state,
3395                                            QETH_QDIO_BUF_PRIMED);
3396                                 flush_count++;
3397                                 queue->next_buf_to_fill =
3398                                         (queue->next_buf_to_fill + 1) %
3399                                         QDIO_MAX_BUFFERS_PER_Q;
3400                         }
3401                 }
3402         }
3403         return flush_count;
3404 }
3405
3406
3407 /*
3408  * Called to flush a packing buffer if no more pci flags are on the queue.
3409  * Checks if there is a packing buffer and prepares it to be flushed.
3410  * In that case returns 1, otherwise zero.
3411  */
3412 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3413 {
3414         struct qeth_qdio_out_buffer *buffer;
3415
3416         buffer = queue->bufs[queue->next_buf_to_fill];
3417         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3418            (buffer->next_element_to_fill > 0)) {
3419                 /* it's a packing buffer */
3420                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3421                 queue->next_buf_to_fill =
3422                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3423                 return 1;
3424         }
3425         return 0;
3426 }
3427
3428 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3429                                int count)
3430 {
3431         struct qeth_qdio_out_buffer *buf;
3432         int rc;
3433         int i;
3434         unsigned int qdio_flags;
3435
3436         for (i = index; i < index + count; ++i) {
3437                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3438                 buf = queue->bufs[bidx];
3439                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3440                                 SBAL_EFLAGS_LAST_ENTRY;
3441
3442                 if (queue->bufstates)
3443                         queue->bufstates[bidx].user = buf;
3444
3445                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3446                         continue;
3447
3448                 if (!queue->do_pack) {
3449                         if ((atomic_read(&queue->used_buffers) >=
3450                                 (QETH_HIGH_WATERMARK_PACK -
3451                                  QETH_WATERMARK_PACK_FUZZ)) &&
3452                             !atomic_read(&queue->set_pci_flags_count)) {
3453                                 /* it's likely that we'll go to packing
3454                                  * mode soon */
3455                                 atomic_inc(&queue->set_pci_flags_count);
3456                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3457                         }
3458                 } else {
3459                         if (!atomic_read(&queue->set_pci_flags_count)) {
3460                                 /*
3461                                  * there's no outstanding PCI any more, so we
3462                                  * have to request a PCI to be sure the the PCI
3463                                  * will wake at some time in the future then we
3464                                  * can flush packed buffers that might still be
3465                                  * hanging around, which can happen if no
3466                                  * further send was requested by the stack
3467                                  */
3468                                 atomic_inc(&queue->set_pci_flags_count);
3469                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3470                         }
3471                 }
3472         }
3473
3474         netif_trans_update(queue->card->dev);
3475         if (queue->card->options.performance_stats) {
3476                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3477                 queue->card->perf_stats.outbound_do_qdio_start_time =
3478                         qeth_get_micros();
3479         }
3480         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3481         if (atomic_read(&queue->set_pci_flags_count))
3482                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3483         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3484                      queue->queue_no, index, count);
3485         if (queue->card->options.performance_stats)
3486                 queue->card->perf_stats.outbound_do_qdio_time +=
3487                         qeth_get_micros() -
3488                         queue->card->perf_stats.outbound_do_qdio_start_time;
3489         atomic_add(count, &queue->used_buffers);
3490         if (rc) {
3491                 queue->card->stats.tx_errors += count;
3492                 /* ignore temporary SIGA errors without busy condition */
3493                 if (rc == -ENOBUFS)
3494                         return;
3495                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3496                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3497                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3498                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3499                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3500
3501                 /* this must not happen under normal circumstances. if it
3502                  * happens something is really wrong -> recover */
3503                 qeth_schedule_recovery(queue->card);
3504                 return;
3505         }
3506         if (queue->card->options.performance_stats)
3507                 queue->card->perf_stats.bufs_sent += count;
3508 }
3509
3510 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3511 {
3512         int index;
3513         int flush_cnt = 0;
3514         int q_was_packing = 0;
3515
3516         /*
3517          * check if weed have to switch to non-packing mode or if
3518          * we have to get a pci flag out on the queue
3519          */
3520         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3521             !atomic_read(&queue->set_pci_flags_count)) {
3522                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3523                                 QETH_OUT_Q_UNLOCKED) {
3524                         /*
3525                          * If we get in here, there was no action in
3526                          * do_send_packet. So, we check if there is a
3527                          * packing buffer to be flushed here.
3528                          */
3529                         netif_stop_queue(queue->card->dev);
3530                         index = queue->next_buf_to_fill;
3531                         q_was_packing = queue->do_pack;
3532                         /* queue->do_pack may change */
3533                         barrier();
3534                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3535                         if (!flush_cnt &&
3536                             !atomic_read(&queue->set_pci_flags_count))
3537                                 flush_cnt +=
3538                                         qeth_flush_buffers_on_no_pci(queue);
3539                         if (queue->card->options.performance_stats &&
3540                             q_was_packing)
3541                                 queue->card->perf_stats.bufs_sent_pack +=
3542                                         flush_cnt;
3543                         if (flush_cnt)
3544                                 qeth_flush_buffers(queue, index, flush_cnt);
3545                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3546                 }
3547         }
3548 }
3549
3550 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3551                 unsigned long card_ptr)
3552 {
3553         struct qeth_card *card = (struct qeth_card *)card_ptr;
3554
3555         if (card->dev && (card->dev->flags & IFF_UP))
3556                 napi_schedule(&card->napi);
3557 }
3558 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3559
3560 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3561 {
3562         int rc;
3563
3564         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3565                 rc = -1;
3566                 goto out;
3567         } else {
3568                 if (card->options.cq == cq) {
3569                         rc = 0;
3570                         goto out;
3571                 }
3572
3573                 if (card->state != CARD_STATE_DOWN &&
3574                     card->state != CARD_STATE_RECOVER) {
3575                         rc = -1;
3576                         goto out;
3577                 }
3578
3579                 qeth_free_qdio_buffers(card);
3580                 card->options.cq = cq;
3581                 rc = 0;
3582         }
3583 out:
3584         return rc;
3585
3586 }
3587 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3588
3589
3590 static void qeth_qdio_cq_handler(struct qeth_card *card,
3591                 unsigned int qdio_err,
3592                 unsigned int queue, int first_element, int count) {
3593         struct qeth_qdio_q *cq = card->qdio.c_q;
3594         int i;
3595         int rc;
3596
3597         if (!qeth_is_cq(card, queue))
3598                 goto out;
3599
3600         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3601         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3602         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3603
3604         if (qdio_err) {
3605                 netif_stop_queue(card->dev);
3606                 qeth_schedule_recovery(card);
3607                 goto out;
3608         }
3609
3610         if (card->options.performance_stats) {
3611                 card->perf_stats.cq_cnt++;
3612                 card->perf_stats.cq_start_time = qeth_get_micros();
3613         }
3614
3615         for (i = first_element; i < first_element + count; ++i) {
3616                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3617                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3618                 int e;
3619
3620                 e = 0;
3621                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3622                        buffer->element[e].addr) {
3623                         unsigned long phys_aob_addr;
3624
3625                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3626                         qeth_qdio_handle_aob(card, phys_aob_addr);
3627                         buffer->element[e].addr = NULL;
3628                         buffer->element[e].eflags = 0;
3629                         buffer->element[e].sflags = 0;
3630                         buffer->element[e].length = 0;
3631
3632                         ++e;
3633                 }
3634
3635                 buffer->element[15].eflags = 0;
3636                 buffer->element[15].sflags = 0;
3637         }
3638         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3639                     card->qdio.c_q->next_buf_to_init,
3640                     count);
3641         if (rc) {
3642                 dev_warn(&card->gdev->dev,
3643                         "QDIO reported an error, rc=%i\n", rc);
3644                 QETH_CARD_TEXT(card, 2, "qcqherr");
3645         }
3646         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3647                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3648
3649         netif_wake_queue(card->dev);
3650
3651         if (card->options.performance_stats) {
3652                 int delta_t = qeth_get_micros();
3653                 delta_t -= card->perf_stats.cq_start_time;
3654                 card->perf_stats.cq_time += delta_t;
3655         }
3656 out:
3657         return;
3658 }
3659
3660 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3661                 unsigned int queue, int first_elem, int count,
3662                 unsigned long card_ptr)
3663 {
3664         struct qeth_card *card = (struct qeth_card *)card_ptr;
3665
3666         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3667         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3668
3669         if (qeth_is_cq(card, queue))
3670                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3671         else if (qdio_err)
3672                 qeth_schedule_recovery(card);
3673
3674
3675 }
3676 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3677
3678 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3679                 unsigned int qdio_error, int __queue, int first_element,
3680                 int count, unsigned long card_ptr)
3681 {
3682         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3683         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3684         struct qeth_qdio_out_buffer *buffer;
3685         int i;
3686
3687         QETH_CARD_TEXT(card, 6, "qdouhdl");
3688         if (qdio_error & QDIO_ERROR_FATAL) {
3689                 QETH_CARD_TEXT(card, 2, "achkcond");
3690                 netif_stop_queue(card->dev);
3691                 qeth_schedule_recovery(card);
3692                 return;
3693         }
3694         if (card->options.performance_stats) {
3695                 card->perf_stats.outbound_handler_cnt++;
3696                 card->perf_stats.outbound_handler_start_time =
3697                         qeth_get_micros();
3698         }
3699         for (i = first_element; i < (first_element + count); ++i) {
3700                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3701                 buffer = queue->bufs[bidx];
3702                 qeth_handle_send_error(card, buffer, qdio_error);
3703
3704                 if (queue->bufstates &&
3705                     (queue->bufstates[bidx].flags &
3706                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3707                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3708
3709                         if (atomic_cmpxchg(&buffer->state,
3710                                            QETH_QDIO_BUF_PRIMED,
3711                                            QETH_QDIO_BUF_PENDING) ==
3712                                 QETH_QDIO_BUF_PRIMED) {
3713                                 qeth_notify_skbs(queue, buffer,
3714                                                  TX_NOTIFY_PENDING);
3715                         }
3716                         buffer->aob = queue->bufstates[bidx].aob;
3717                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3718                         QETH_CARD_TEXT(queue->card, 5, "aob");
3719                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3720                                         virt_to_phys(buffer->aob));
3721                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3722                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3723                                 qeth_schedule_recovery(card);
3724                         }
3725                 } else {
3726                         if (card->options.cq == QETH_CQ_ENABLED) {
3727                                 enum iucv_tx_notify n;
3728
3729                                 n = qeth_compute_cq_notification(
3730                                         buffer->buffer->element[15].sflags, 0);
3731                                 qeth_notify_skbs(queue, buffer, n);
3732                         }
3733
3734                         qeth_clear_output_buffer(queue, buffer,
3735                                                 QETH_QDIO_BUF_EMPTY);
3736                 }
3737                 qeth_cleanup_handled_pending(queue, bidx, 0);
3738         }
3739         atomic_sub(count, &queue->used_buffers);
3740         /* check if we need to do something on this outbound queue */
3741         if (card->info.type != QETH_CARD_TYPE_IQD)
3742                 qeth_check_outbound_queue(queue);
3743
3744         netif_wake_queue(queue->card->dev);
3745         if (card->options.performance_stats)
3746                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3747                         card->perf_stats.outbound_handler_start_time;
3748 }
3749 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3750
3751 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3752 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3753 {
3754         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3755                 return 2;
3756         return queue_num;
3757 }
3758
3759 /**
3760  * Note: Function assumes that we have 4 outbound queues.
3761  */
3762 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3763                         int ipv, int cast_type)
3764 {
3765         __be16 *tci;
3766         u8 tos;
3767
3768         if (cast_type && card->info.is_multicast_different)
3769                 return card->info.is_multicast_different &
3770                         (card->qdio.no_out_queues - 1);
3771
3772         switch (card->qdio.do_prio_queueing) {
3773         case QETH_PRIO_Q_ING_TOS:
3774         case QETH_PRIO_Q_ING_PREC:
3775                 switch (ipv) {
3776                 case 4:
3777                         tos = ipv4_get_dsfield(ip_hdr(skb));
3778                         break;
3779                 case 6:
3780                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3781                         break;
3782                 default:
3783                         return card->qdio.default_out_queue;
3784                 }
3785                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3786                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3787                 if (tos & IPTOS_MINCOST)
3788                         return qeth_cut_iqd_prio(card, 3);
3789                 if (tos & IPTOS_RELIABILITY)
3790                         return 2;
3791                 if (tos & IPTOS_THROUGHPUT)
3792                         return 1;
3793                 if (tos & IPTOS_LOWDELAY)
3794                         return 0;
3795                 break;
3796         case QETH_PRIO_Q_ING_SKB:
3797                 if (skb->priority > 5)
3798                         return 0;
3799                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3800         case QETH_PRIO_Q_ING_VLAN:
3801                 tci = &((struct ethhdr *)skb->data)->h_proto;
3802                 if (*tci == ETH_P_8021Q)
3803                         return qeth_cut_iqd_prio(card, ~*(tci + 1) >>
3804                         (VLAN_PRIO_SHIFT + 1) & 3);
3805                 break;
3806         default:
3807                 break;
3808         }
3809         return card->qdio.default_out_queue;
3810 }
3811 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3812
3813 /**
3814  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3815  * @skb:                                SKB address
3816  *
3817  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3818  * fragmented part of the SKB. Returns zero for linear SKB.
3819  */
3820 int qeth_get_elements_for_frags(struct sk_buff *skb)
3821 {
3822         int cnt, elements = 0;
3823
3824         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3825                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3826
3827                 elements += qeth_get_elements_for_range(
3828                         (addr_t)skb_frag_address(frag),
3829                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3830         }
3831         return elements;
3832 }
3833 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3834
3835 /**
3836  * qeth_get_elements_no() -     find number of SBALEs for skb data, inc. frags.
3837  * @card:                       qeth card structure, to check max. elems.
3838  * @skb:                        SKB address
3839  * @extra_elems:                extra elems needed, to check against max.
3840  *
3841  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3842  * skb data, including linear part and fragments. Checks if the result plus
3843  * extra_elems fits under the limit for the card. Returns 0 if it does not.
3844  * Note: extra_elems is not included in the returned result.
3845  */
3846 int qeth_get_elements_no(struct qeth_card *card,
3847                      struct sk_buff *skb, int extra_elems)
3848 {
3849         int elements = qeth_get_elements_for_range(
3850                                 (addr_t)skb->data,
3851                                 (addr_t)skb->data + skb_headlen(skb)) +
3852                         qeth_get_elements_for_frags(skb);
3853
3854         if ((elements + extra_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 + extra_elems, skb->len);
3858                 return 0;
3859         }
3860         return elements;
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_headlen(skb));
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_headlen(skb);
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 ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4205             (!qeth_mtu_is_valid(card, new_mtu)))
4206                 return -EINVAL;
4207         dev->mtu = new_mtu;
4208         return 0;
4209 }
4210 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4211
4212 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4213 {
4214         struct qeth_card *card;
4215
4216         card = dev->ml_priv;
4217
4218         QETH_CARD_TEXT(card, 5, "getstat");
4219
4220         return &card->stats;
4221 }
4222 EXPORT_SYMBOL_GPL(qeth_get_stats);
4223
4224 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4225                 struct qeth_reply *reply, unsigned long data)
4226 {
4227         struct qeth_ipa_cmd *cmd;
4228
4229         QETH_CARD_TEXT(card, 4, "chgmaccb");
4230
4231         cmd = (struct qeth_ipa_cmd *) data;
4232         if (!card->options.layer2 ||
4233             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4234                 memcpy(card->dev->dev_addr,
4235                        &cmd->data.setadapterparms.data.change_addr.addr,
4236                        OSA_ADDR_LEN);
4237                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4238         }
4239         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4240         return 0;
4241 }
4242
4243 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4244 {
4245         int rc;
4246         struct qeth_cmd_buffer *iob;
4247         struct qeth_ipa_cmd *cmd;
4248
4249         QETH_CARD_TEXT(card, 4, "chgmac");
4250
4251         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4252                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4253                                    sizeof(struct qeth_change_addr));
4254         if (!iob)
4255                 return -ENOMEM;
4256         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4257         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4258         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4259         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4260                card->dev->dev_addr, OSA_ADDR_LEN);
4261         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4262                                NULL);
4263         return rc;
4264 }
4265 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4266
4267 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4268                 struct qeth_reply *reply, unsigned long data)
4269 {
4270         struct qeth_ipa_cmd *cmd;
4271         struct qeth_set_access_ctrl *access_ctrl_req;
4272         int fallback = *(int *)reply->param;
4273
4274         QETH_CARD_TEXT(card, 4, "setaccb");
4275
4276         cmd = (struct qeth_ipa_cmd *) data;
4277         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4278         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4279         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4280         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4281                 cmd->data.setadapterparms.hdr.return_code);
4282         if (cmd->data.setadapterparms.hdr.return_code !=
4283                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4284                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4285                                 card->gdev->dev.kobj.name,
4286                                 access_ctrl_req->subcmd_code,
4287                                 cmd->data.setadapterparms.hdr.return_code);
4288         switch (cmd->data.setadapterparms.hdr.return_code) {
4289         case SET_ACCESS_CTRL_RC_SUCCESS:
4290                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4291                         dev_info(&card->gdev->dev,
4292                             "QDIO data connection isolation is deactivated\n");
4293                 } else {
4294                         dev_info(&card->gdev->dev,
4295                             "QDIO data connection isolation is activated\n");
4296                 }
4297                 break;
4298         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4299                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4300                                 "deactivated\n", dev_name(&card->gdev->dev));
4301                 if (fallback)
4302                         card->options.isolation = card->options.prev_isolation;
4303                 break;
4304         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4305                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4306                                 " activated\n", dev_name(&card->gdev->dev));
4307                 if (fallback)
4308                         card->options.isolation = card->options.prev_isolation;
4309                 break;
4310         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4311                 dev_err(&card->gdev->dev, "Adapter does not "
4312                         "support QDIO data connection isolation\n");
4313                 break;
4314         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4315                 dev_err(&card->gdev->dev,
4316                         "Adapter is dedicated. "
4317                         "QDIO data connection isolation not supported\n");
4318                 if (fallback)
4319                         card->options.isolation = card->options.prev_isolation;
4320                 break;
4321         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4322                 dev_err(&card->gdev->dev,
4323                         "TSO does not permit QDIO data connection isolation\n");
4324                 if (fallback)
4325                         card->options.isolation = card->options.prev_isolation;
4326                 break;
4327         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4328                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4329                         "support reflective relay mode\n");
4330                 if (fallback)
4331                         card->options.isolation = card->options.prev_isolation;
4332                 break;
4333         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4334                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4335                                         "enabled at the adjacent switch port");
4336                 if (fallback)
4337                         card->options.isolation = card->options.prev_isolation;
4338                 break;
4339         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4340                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4341                                         "at the adjacent switch failed\n");
4342                 break;
4343         default:
4344                 /* this should never happen */
4345                 if (fallback)
4346                         card->options.isolation = card->options.prev_isolation;
4347                 break;
4348         }
4349         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4350         return 0;
4351 }
4352
4353 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4354                 enum qeth_ipa_isolation_modes isolation, int fallback)
4355 {
4356         int rc;
4357         struct qeth_cmd_buffer *iob;
4358         struct qeth_ipa_cmd *cmd;
4359         struct qeth_set_access_ctrl *access_ctrl_req;
4360
4361         QETH_CARD_TEXT(card, 4, "setacctl");
4362
4363         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4364         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4365
4366         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4367                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4368                                    sizeof(struct qeth_set_access_ctrl));
4369         if (!iob)
4370                 return -ENOMEM;
4371         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4372         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4373         access_ctrl_req->subcmd_code = isolation;
4374
4375         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4376                                &fallback);
4377         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4378         return rc;
4379 }
4380
4381 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4382 {
4383         int rc = 0;
4384
4385         QETH_CARD_TEXT(card, 4, "setactlo");
4386
4387         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4388              card->info.type == QETH_CARD_TYPE_OSX) &&
4389              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4390                 rc = qeth_setadpparms_set_access_ctrl(card,
4391                         card->options.isolation, fallback);
4392                 if (rc) {
4393                         QETH_DBF_MESSAGE(3,
4394                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4395                                 card->gdev->dev.kobj.name,
4396                                 rc);
4397                         rc = -EOPNOTSUPP;
4398                 }
4399         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4400                 card->options.isolation = ISOLATION_MODE_NONE;
4401
4402                 dev_err(&card->gdev->dev, "Adapter does not "
4403                         "support QDIO data connection isolation\n");
4404                 rc = -EOPNOTSUPP;
4405         }
4406         return rc;
4407 }
4408 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4409
4410 void qeth_tx_timeout(struct net_device *dev)
4411 {
4412         struct qeth_card *card;
4413
4414         card = dev->ml_priv;
4415         QETH_CARD_TEXT(card, 4, "txtimeo");
4416         card->stats.tx_errors++;
4417         qeth_schedule_recovery(card);
4418 }
4419 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4420
4421 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4422 {
4423         struct qeth_card *card = dev->ml_priv;
4424         int rc = 0;
4425
4426         switch (regnum) {
4427         case MII_BMCR: /* Basic mode control register */
4428                 rc = BMCR_FULLDPLX;
4429                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4430                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4431                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4432                         rc |= BMCR_SPEED100;
4433                 break;
4434         case MII_BMSR: /* Basic mode status register */
4435                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4436                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4437                      BMSR_100BASE4;
4438                 break;
4439         case MII_PHYSID1: /* PHYS ID 1 */
4440                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4441                      dev->dev_addr[2];
4442                 rc = (rc >> 5) & 0xFFFF;
4443                 break;
4444         case MII_PHYSID2: /* PHYS ID 2 */
4445                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4446                 break;
4447         case MII_ADVERTISE: /* Advertisement control reg */
4448                 rc = ADVERTISE_ALL;
4449                 break;
4450         case MII_LPA: /* Link partner ability reg */
4451                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4452                      LPA_100BASE4 | LPA_LPACK;
4453                 break;
4454         case MII_EXPANSION: /* Expansion register */
4455                 break;
4456         case MII_DCOUNTER: /* disconnect counter */
4457                 break;
4458         case MII_FCSCOUNTER: /* false carrier counter */
4459                 break;
4460         case MII_NWAYTEST: /* N-way auto-neg test register */
4461                 break;
4462         case MII_RERRCOUNTER: /* rx error counter */
4463                 rc = card->stats.rx_errors;
4464                 break;
4465         case MII_SREVISION: /* silicon revision */
4466                 break;
4467         case MII_RESV1: /* reserved 1 */
4468                 break;
4469         case MII_LBRERROR: /* loopback, rx, bypass error */
4470                 break;
4471         case MII_PHYADDR: /* physical address */
4472                 break;
4473         case MII_RESV2: /* reserved 2 */
4474                 break;
4475         case MII_TPISTATUS: /* TPI status for 10mbps */
4476                 break;
4477         case MII_NCONFIG: /* network interface config */
4478                 break;
4479         default:
4480                 break;
4481         }
4482         return rc;
4483 }
4484 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4485
4486 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4487                 struct qeth_cmd_buffer *iob, int len,
4488                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4489                         unsigned long),
4490                 void *reply_param)
4491 {
4492         u16 s1, s2;
4493
4494         QETH_CARD_TEXT(card, 4, "sendsnmp");
4495
4496         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4497         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4498                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4499         /* adjust PDU length fields in IPA_PDU_HEADER */
4500         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4501         s2 = (u32) len;
4502         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4503         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4504         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4505         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4506         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4507                                       reply_cb, reply_param);
4508 }
4509
4510 static int qeth_snmp_command_cb(struct qeth_card *card,
4511                 struct qeth_reply *reply, unsigned long sdata)
4512 {
4513         struct qeth_ipa_cmd *cmd;
4514         struct qeth_arp_query_info *qinfo;
4515         struct qeth_snmp_cmd *snmp;
4516         unsigned char *data;
4517         __u16 data_len;
4518
4519         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4520
4521         cmd = (struct qeth_ipa_cmd *) sdata;
4522         data = (unsigned char *)((char *)cmd - reply->offset);
4523         qinfo = (struct qeth_arp_query_info *) reply->param;
4524         snmp = &cmd->data.setadapterparms.data.snmp;
4525
4526         if (cmd->hdr.return_code) {
4527                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4528                 return 0;
4529         }
4530         if (cmd->data.setadapterparms.hdr.return_code) {
4531                 cmd->hdr.return_code =
4532                         cmd->data.setadapterparms.hdr.return_code;
4533                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4534                 return 0;
4535         }
4536         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4537         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4538                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4539         else
4540                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4541
4542         /* check if there is enough room in userspace */
4543         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4544                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4545                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4546                 return 0;
4547         }
4548         QETH_CARD_TEXT_(card, 4, "snore%i",
4549                        cmd->data.setadapterparms.hdr.used_total);
4550         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4551                 cmd->data.setadapterparms.hdr.seq_no);
4552         /*copy entries to user buffer*/
4553         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4554                 memcpy(qinfo->udata + qinfo->udata_offset,
4555                        (char *)snmp,
4556                        data_len + offsetof(struct qeth_snmp_cmd, data));
4557                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4558         } else {
4559                 memcpy(qinfo->udata + qinfo->udata_offset,
4560                        (char *)&snmp->request, data_len);
4561         }
4562         qinfo->udata_offset += data_len;
4563         /* check if all replies received ... */
4564                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4565                                cmd->data.setadapterparms.hdr.used_total);
4566                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4567                                cmd->data.setadapterparms.hdr.seq_no);
4568         if (cmd->data.setadapterparms.hdr.seq_no <
4569             cmd->data.setadapterparms.hdr.used_total)
4570                 return 1;
4571         return 0;
4572 }
4573
4574 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4575 {
4576         struct qeth_cmd_buffer *iob;
4577         struct qeth_ipa_cmd *cmd;
4578         struct qeth_snmp_ureq *ureq;
4579         unsigned int req_len;
4580         struct qeth_arp_query_info qinfo = {0, };
4581         int rc = 0;
4582
4583         QETH_CARD_TEXT(card, 3, "snmpcmd");
4584
4585         if (card->info.guestlan)
4586                 return -EOPNOTSUPP;
4587
4588         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4589             (!card->options.layer2)) {
4590                 return -EOPNOTSUPP;
4591         }
4592         /* skip 4 bytes (data_len struct member) to get req_len */
4593         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4594                 return -EFAULT;
4595         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4596                        sizeof(struct qeth_ipacmd_hdr) -
4597                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4598                 return -EINVAL;
4599         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4600         if (IS_ERR(ureq)) {
4601                 QETH_CARD_TEXT(card, 2, "snmpnome");
4602                 return PTR_ERR(ureq);
4603         }
4604         qinfo.udata_len = ureq->hdr.data_len;
4605         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4606         if (!qinfo.udata) {
4607                 kfree(ureq);
4608                 return -ENOMEM;
4609         }
4610         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4611
4612         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4613                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4614         if (!iob) {
4615                 rc = -ENOMEM;
4616                 goto out;
4617         }
4618         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4619         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4620         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4621                                     qeth_snmp_command_cb, (void *)&qinfo);
4622         if (rc)
4623                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4624                            QETH_CARD_IFNAME(card), rc);
4625         else {
4626                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4627                         rc = -EFAULT;
4628         }
4629 out:
4630         kfree(ureq);
4631         kfree(qinfo.udata);
4632         return rc;
4633 }
4634 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4635
4636 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4637                 struct qeth_reply *reply, unsigned long data)
4638 {
4639         struct qeth_ipa_cmd *cmd;
4640         struct qeth_qoat_priv *priv;
4641         char *resdata;
4642         int resdatalen;
4643
4644         QETH_CARD_TEXT(card, 3, "qoatcb");
4645
4646         cmd = (struct qeth_ipa_cmd *)data;
4647         priv = (struct qeth_qoat_priv *)reply->param;
4648         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4649         resdata = (char *)data + 28;
4650
4651         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4652                 cmd->hdr.return_code = IPA_RC_FFFF;
4653                 return 0;
4654         }
4655
4656         memcpy((priv->buffer + priv->response_len), resdata,
4657                 resdatalen);
4658         priv->response_len += resdatalen;
4659
4660         if (cmd->data.setadapterparms.hdr.seq_no <
4661             cmd->data.setadapterparms.hdr.used_total)
4662                 return 1;
4663         return 0;
4664 }
4665
4666 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4667 {
4668         int rc = 0;
4669         struct qeth_cmd_buffer *iob;
4670         struct qeth_ipa_cmd *cmd;
4671         struct qeth_query_oat *oat_req;
4672         struct qeth_query_oat_data oat_data;
4673         struct qeth_qoat_priv priv;
4674         void __user *tmp;
4675
4676         QETH_CARD_TEXT(card, 3, "qoatcmd");
4677
4678         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4679                 rc = -EOPNOTSUPP;
4680                 goto out;
4681         }
4682
4683         if (copy_from_user(&oat_data, udata,
4684             sizeof(struct qeth_query_oat_data))) {
4685                         rc = -EFAULT;
4686                         goto out;
4687         }
4688
4689         priv.buffer_len = oat_data.buffer_len;
4690         priv.response_len = 0;
4691         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4692         if (!priv.buffer) {
4693                 rc = -ENOMEM;
4694                 goto out;
4695         }
4696
4697         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4698                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4699                                    sizeof(struct qeth_query_oat));
4700         if (!iob) {
4701                 rc = -ENOMEM;
4702                 goto out_free;
4703         }
4704         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4705         oat_req = &cmd->data.setadapterparms.data.query_oat;
4706         oat_req->subcmd_code = oat_data.command;
4707
4708         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4709                                &priv);
4710         if (!rc) {
4711                 if (is_compat_task())
4712                         tmp = compat_ptr(oat_data.ptr);
4713                 else
4714                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4715
4716                 if (copy_to_user(tmp, priv.buffer,
4717                     priv.response_len)) {
4718                         rc = -EFAULT;
4719                         goto out_free;
4720                 }
4721
4722                 oat_data.response_len = priv.response_len;
4723
4724                 if (copy_to_user(udata, &oat_data,
4725                     sizeof(struct qeth_query_oat_data)))
4726                         rc = -EFAULT;
4727         } else
4728                 if (rc == IPA_RC_FFFF)
4729                         rc = -EFAULT;
4730
4731 out_free:
4732         kfree(priv.buffer);
4733 out:
4734         return rc;
4735 }
4736 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4737
4738 static int qeth_query_card_info_cb(struct qeth_card *card,
4739                                    struct qeth_reply *reply, unsigned long data)
4740 {
4741         struct qeth_ipa_cmd *cmd;
4742         struct qeth_query_card_info *card_info;
4743         struct carrier_info *carrier_info;
4744
4745         QETH_CARD_TEXT(card, 2, "qcrdincb");
4746         carrier_info = (struct carrier_info *)reply->param;
4747         cmd = (struct qeth_ipa_cmd *)data;
4748         card_info = &cmd->data.setadapterparms.data.card_info;
4749         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4750                 carrier_info->card_type = card_info->card_type;
4751                 carrier_info->port_mode = card_info->port_mode;
4752                 carrier_info->port_speed = card_info->port_speed;
4753         }
4754
4755         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4756         return 0;
4757 }
4758
4759 static int qeth_query_card_info(struct qeth_card *card,
4760                                 struct carrier_info *carrier_info)
4761 {
4762         struct qeth_cmd_buffer *iob;
4763
4764         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4765         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4766                 return -EOPNOTSUPP;
4767         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4768                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4769         if (!iob)
4770                 return -ENOMEM;
4771         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4772                                         (void *)carrier_info);
4773 }
4774
4775 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4776 {
4777         switch (card->info.type) {
4778         case QETH_CARD_TYPE_IQD:
4779                 return 2;
4780         default:
4781                 return 0;
4782         }
4783 }
4784
4785 static void qeth_determine_capabilities(struct qeth_card *card)
4786 {
4787         int rc;
4788         int length;
4789         char *prcd;
4790         struct ccw_device *ddev;
4791         int ddev_offline = 0;
4792
4793         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4794         ddev = CARD_DDEV(card);
4795         if (!ddev->online) {
4796                 ddev_offline = 1;
4797                 rc = ccw_device_set_online(ddev);
4798                 if (rc) {
4799                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4800                         goto out;
4801                 }
4802         }
4803
4804         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4805         if (rc) {
4806                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4807                         dev_name(&card->gdev->dev), rc);
4808                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4809                 goto out_offline;
4810         }
4811         qeth_configure_unitaddr(card, prcd);
4812         if (ddev_offline)
4813                 qeth_configure_blkt_default(card, prcd);
4814         kfree(prcd);
4815
4816         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4817         if (rc)
4818                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4819
4820         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4821         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4822         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4823         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4824         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4825             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4826             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4827                 dev_info(&card->gdev->dev,
4828                         "Completion Queueing supported\n");
4829         } else {
4830                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4831         }
4832
4833
4834 out_offline:
4835         if (ddev_offline == 1)
4836                 ccw_device_set_offline(ddev);
4837 out:
4838         return;
4839 }
4840
4841 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4842         struct qdio_buffer **in_sbal_ptrs,
4843         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4844         int i;
4845
4846         if (card->options.cq == QETH_CQ_ENABLED) {
4847                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4848                              (card->qdio.no_in_queues - 1);
4849                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4850                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4851                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4852                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4853                 }
4854
4855                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4856         }
4857 }
4858
4859 static int qeth_qdio_establish(struct qeth_card *card)
4860 {
4861         struct qdio_initialize init_data;
4862         char *qib_param_field;
4863         struct qdio_buffer **in_sbal_ptrs;
4864         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4865         struct qdio_buffer **out_sbal_ptrs;
4866         int i, j, k;
4867         int rc = 0;
4868
4869         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4870
4871         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4872                               GFP_KERNEL);
4873         if (!qib_param_field) {
4874                 rc =  -ENOMEM;
4875                 goto out_free_nothing;
4876         }
4877
4878         qeth_create_qib_param_field(card, qib_param_field);
4879         qeth_create_qib_param_field_blkt(card, qib_param_field);
4880
4881         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4882                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4883                                GFP_KERNEL);
4884         if (!in_sbal_ptrs) {
4885                 rc = -ENOMEM;
4886                 goto out_free_qib_param;
4887         }
4888         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4889                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4890                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4891         }
4892
4893         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4894                                    GFP_KERNEL);
4895         if (!queue_start_poll) {
4896                 rc = -ENOMEM;
4897                 goto out_free_in_sbals;
4898         }
4899         for (i = 0; i < card->qdio.no_in_queues; ++i)
4900                 queue_start_poll[i] = card->discipline->start_poll;
4901
4902         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4903
4904         out_sbal_ptrs =
4905                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4906                         sizeof(void *), GFP_KERNEL);
4907         if (!out_sbal_ptrs) {
4908                 rc = -ENOMEM;
4909                 goto out_free_queue_start_poll;
4910         }
4911         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4912                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4913                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4914                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4915                 }
4916
4917         memset(&init_data, 0, sizeof(struct qdio_initialize));
4918         init_data.cdev                   = CARD_DDEV(card);
4919         init_data.q_format               = qeth_get_qdio_q_format(card);
4920         init_data.qib_param_field_format = 0;
4921         init_data.qib_param_field        = qib_param_field;
4922         init_data.no_input_qs            = card->qdio.no_in_queues;
4923         init_data.no_output_qs           = card->qdio.no_out_queues;
4924         init_data.input_handler          = card->discipline->input_handler;
4925         init_data.output_handler         = card->discipline->output_handler;
4926         init_data.queue_start_poll_array = queue_start_poll;
4927         init_data.int_parm               = (unsigned long) card;
4928         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4929         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4930         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4931         init_data.scan_threshold =
4932                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4933
4934         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4935                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4936                 rc = qdio_allocate(&init_data);
4937                 if (rc) {
4938                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4939                         goto out;
4940                 }
4941                 rc = qdio_establish(&init_data);
4942                 if (rc) {
4943                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4944                         qdio_free(CARD_DDEV(card));
4945                 }
4946         }
4947
4948         switch (card->options.cq) {
4949         case QETH_CQ_ENABLED:
4950                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4951                 break;
4952         case QETH_CQ_DISABLED:
4953                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4954                 break;
4955         default:
4956                 break;
4957         }
4958 out:
4959         kfree(out_sbal_ptrs);
4960 out_free_queue_start_poll:
4961         kfree(queue_start_poll);
4962 out_free_in_sbals:
4963         kfree(in_sbal_ptrs);
4964 out_free_qib_param:
4965         kfree(qib_param_field);
4966 out_free_nothing:
4967         return rc;
4968 }
4969
4970 static void qeth_core_free_card(struct qeth_card *card)
4971 {
4972
4973         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4974         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4975         qeth_clean_channel(&card->read);
4976         qeth_clean_channel(&card->write);
4977         if (card->dev)
4978                 free_netdev(card->dev);
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 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         return 0;
5306 }
5307 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5308
5309 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5310                                                  enum qeth_ipa_funcs ipa_func,
5311                                                  __u16 cmd_code, __u16 len,
5312                                                  enum qeth_prot_versions prot)
5313 {
5314         struct qeth_cmd_buffer *iob;
5315         struct qeth_ipa_cmd *cmd;
5316
5317         QETH_CARD_TEXT(card, 4, "getasscm");
5318         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5319
5320         if (iob) {
5321                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5322                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5323                 cmd->data.setassparms.hdr.length = 8 + len;
5324                 cmd->data.setassparms.hdr.command_code = cmd_code;
5325                 cmd->data.setassparms.hdr.return_code = 0;
5326                 cmd->data.setassparms.hdr.seq_no = 0;
5327         }
5328
5329         return iob;
5330 }
5331 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5332
5333 int qeth_send_setassparms(struct qeth_card *card,
5334                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5335                           int (*reply_cb)(struct qeth_card *,
5336                                           struct qeth_reply *, unsigned long),
5337                           void *reply_param)
5338 {
5339         int rc;
5340         struct qeth_ipa_cmd *cmd;
5341
5342         QETH_CARD_TEXT(card, 4, "sendassp");
5343
5344         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5345         if (len <= sizeof(__u32))
5346                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5347         else   /* (len > sizeof(__u32)) */
5348                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5349
5350         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5351         return rc;
5352 }
5353 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5354
5355 int qeth_send_simple_setassparms(struct qeth_card *card,
5356                                  enum qeth_ipa_funcs ipa_func,
5357                                  __u16 cmd_code, long data)
5358 {
5359         int rc;
5360         int length = 0;
5361         struct qeth_cmd_buffer *iob;
5362
5363         QETH_CARD_TEXT(card, 4, "simassp4");
5364         if (data)
5365                 length = sizeof(__u32);
5366         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5367                                        length, QETH_PROT_IPV4);
5368         if (!iob)
5369                 return -ENOMEM;
5370         rc = qeth_send_setassparms(card, iob, length, data,
5371                                    qeth_setassparms_cb, NULL);
5372         return rc;
5373 }
5374 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5375
5376 static void qeth_unregister_dbf_views(void)
5377 {
5378         int x;
5379         for (x = 0; x < QETH_DBF_INFOS; x++) {
5380                 debug_unregister(qeth_dbf[x].id);
5381                 qeth_dbf[x].id = NULL;
5382         }
5383 }
5384
5385 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5386 {
5387         char dbf_txt_buf[32];
5388         va_list args;
5389
5390         if (!debug_level_enabled(id, level))
5391                 return;
5392         va_start(args, fmt);
5393         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5394         va_end(args);
5395         debug_text_event(id, level, dbf_txt_buf);
5396 }
5397 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5398
5399 static int qeth_register_dbf_views(void)
5400 {
5401         int ret;
5402         int x;
5403
5404         for (x = 0; x < QETH_DBF_INFOS; x++) {
5405                 /* register the areas */
5406                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5407                                                 qeth_dbf[x].pages,
5408                                                 qeth_dbf[x].areas,
5409                                                 qeth_dbf[x].len);
5410                 if (qeth_dbf[x].id == NULL) {
5411                         qeth_unregister_dbf_views();
5412                         return -ENOMEM;
5413                 }
5414
5415                 /* register a view */
5416                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5417                 if (ret) {
5418                         qeth_unregister_dbf_views();
5419                         return ret;
5420                 }
5421
5422                 /* set a passing level */
5423                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5424         }
5425
5426         return 0;
5427 }
5428
5429 int qeth_core_load_discipline(struct qeth_card *card,
5430                 enum qeth_discipline_id discipline)
5431 {
5432         int rc = 0;
5433         mutex_lock(&qeth_mod_mutex);
5434         switch (discipline) {
5435         case QETH_DISCIPLINE_LAYER3:
5436                 card->discipline = try_then_request_module(
5437                         symbol_get(qeth_l3_discipline), "qeth_l3");
5438                 break;
5439         case QETH_DISCIPLINE_LAYER2:
5440                 card->discipline = try_then_request_module(
5441                         symbol_get(qeth_l2_discipline), "qeth_l2");
5442                 break;
5443         }
5444         if (!card->discipline) {
5445                 dev_err(&card->gdev->dev, "There is no kernel module to "
5446                         "support discipline %d\n", discipline);
5447                 rc = -EINVAL;
5448         }
5449         mutex_unlock(&qeth_mod_mutex);
5450         return rc;
5451 }
5452
5453 void qeth_core_free_discipline(struct qeth_card *card)
5454 {
5455         if (card->options.layer2)
5456                 symbol_put(qeth_l2_discipline);
5457         else
5458                 symbol_put(qeth_l3_discipline);
5459         card->discipline = NULL;
5460 }
5461
5462 static const struct device_type qeth_generic_devtype = {
5463         .name = "qeth_generic",
5464         .groups = qeth_generic_attr_groups,
5465 };
5466 static const struct device_type qeth_osn_devtype = {
5467         .name = "qeth_osn",
5468         .groups = qeth_osn_attr_groups,
5469 };
5470
5471 #define DBF_NAME_LEN    20
5472
5473 struct qeth_dbf_entry {
5474         char dbf_name[DBF_NAME_LEN];
5475         debug_info_t *dbf_info;
5476         struct list_head dbf_list;
5477 };
5478
5479 static LIST_HEAD(qeth_dbf_list);
5480 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5481
5482 static debug_info_t *qeth_get_dbf_entry(char *name)
5483 {
5484         struct qeth_dbf_entry *entry;
5485         debug_info_t *rc = NULL;
5486
5487         mutex_lock(&qeth_dbf_list_mutex);
5488         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5489                 if (strcmp(entry->dbf_name, name) == 0) {
5490                         rc = entry->dbf_info;
5491                         break;
5492                 }
5493         }
5494         mutex_unlock(&qeth_dbf_list_mutex);
5495         return rc;
5496 }
5497
5498 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5499 {
5500         struct qeth_dbf_entry *new_entry;
5501
5502         card->debug = debug_register(name, 2, 1, 8);
5503         if (!card->debug) {
5504                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5505                 goto err;
5506         }
5507         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5508                 goto err_dbg;
5509         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5510         if (!new_entry)
5511                 goto err_dbg;
5512         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5513         new_entry->dbf_info = card->debug;
5514         mutex_lock(&qeth_dbf_list_mutex);
5515         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5516         mutex_unlock(&qeth_dbf_list_mutex);
5517
5518         return 0;
5519
5520 err_dbg:
5521         debug_unregister(card->debug);
5522 err:
5523         return -ENOMEM;
5524 }
5525
5526 static void qeth_clear_dbf_list(void)
5527 {
5528         struct qeth_dbf_entry *entry, *tmp;
5529
5530         mutex_lock(&qeth_dbf_list_mutex);
5531         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5532                 list_del(&entry->dbf_list);
5533                 debug_unregister(entry->dbf_info);
5534                 kfree(entry);
5535         }
5536         mutex_unlock(&qeth_dbf_list_mutex);
5537 }
5538
5539 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5540 {
5541         struct qeth_card *card;
5542         struct device *dev;
5543         int rc;
5544         unsigned long flags;
5545         char dbf_name[DBF_NAME_LEN];
5546
5547         QETH_DBF_TEXT(SETUP, 2, "probedev");
5548
5549         dev = &gdev->dev;
5550         if (!get_device(dev))
5551                 return -ENODEV;
5552
5553         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5554
5555         card = qeth_alloc_card();
5556         if (!card) {
5557                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5558                 rc = -ENOMEM;
5559                 goto err_dev;
5560         }
5561
5562         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5563                 dev_name(&gdev->dev));
5564         card->debug = qeth_get_dbf_entry(dbf_name);
5565         if (!card->debug) {
5566                 rc = qeth_add_dbf_entry(card, dbf_name);
5567                 if (rc)
5568                         goto err_card;
5569         }
5570
5571         card->read.ccwdev  = gdev->cdev[0];
5572         card->write.ccwdev = gdev->cdev[1];
5573         card->data.ccwdev  = gdev->cdev[2];
5574         dev_set_drvdata(&gdev->dev, card);
5575         card->gdev = gdev;
5576         gdev->cdev[0]->handler = qeth_irq;
5577         gdev->cdev[1]->handler = qeth_irq;
5578         gdev->cdev[2]->handler = qeth_irq;
5579
5580         rc = qeth_determine_card_type(card);
5581         if (rc) {
5582                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5583                 goto err_card;
5584         }
5585         rc = qeth_setup_card(card);
5586         if (rc) {
5587                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5588                 goto err_card;
5589         }
5590
5591         if (card->info.type == QETH_CARD_TYPE_OSN)
5592                 gdev->dev.type = &qeth_osn_devtype;
5593         else
5594                 gdev->dev.type = &qeth_generic_devtype;
5595
5596         switch (card->info.type) {
5597         case QETH_CARD_TYPE_OSN:
5598         case QETH_CARD_TYPE_OSM:
5599                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5600                 if (rc)
5601                         goto err_card;
5602                 rc = card->discipline->setup(card->gdev);
5603                 if (rc)
5604                         goto err_disc;
5605         case QETH_CARD_TYPE_OSD:
5606         case QETH_CARD_TYPE_OSX:
5607         default:
5608                 break;
5609         }
5610
5611         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5612         list_add_tail(&card->list, &qeth_core_card_list.list);
5613         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5614
5615         qeth_determine_capabilities(card);
5616         return 0;
5617
5618 err_disc:
5619         qeth_core_free_discipline(card);
5620 err_card:
5621         qeth_core_free_card(card);
5622 err_dev:
5623         put_device(dev);
5624         return rc;
5625 }
5626
5627 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5628 {
5629         unsigned long flags;
5630         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5631
5632         QETH_DBF_TEXT(SETUP, 2, "removedv");
5633
5634         if (card->discipline) {
5635                 card->discipline->remove(gdev);
5636                 qeth_core_free_discipline(card);
5637         }
5638
5639         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5640         list_del(&card->list);
5641         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5642         qeth_core_free_card(card);
5643         dev_set_drvdata(&gdev->dev, NULL);
5644         put_device(&gdev->dev);
5645         return;
5646 }
5647
5648 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5649 {
5650         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5651         int rc = 0;
5652         int def_discipline;
5653
5654         if (!card->discipline) {
5655                 if (card->info.type == QETH_CARD_TYPE_IQD)
5656                         def_discipline = QETH_DISCIPLINE_LAYER3;
5657                 else
5658                         def_discipline = QETH_DISCIPLINE_LAYER2;
5659                 rc = qeth_core_load_discipline(card, def_discipline);
5660                 if (rc)
5661                         goto err;
5662                 rc = card->discipline->setup(card->gdev);
5663                 if (rc)
5664                         goto err;
5665         }
5666         rc = card->discipline->set_online(gdev);
5667 err:
5668         return rc;
5669 }
5670
5671 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5672 {
5673         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5674         return card->discipline->set_offline(gdev);
5675 }
5676
5677 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5678 {
5679         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5680         if (card->discipline && card->discipline->shutdown)
5681                 card->discipline->shutdown(gdev);
5682 }
5683
5684 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5685 {
5686         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5687         if (card->discipline && card->discipline->prepare)
5688                 return card->discipline->prepare(gdev);
5689         return 0;
5690 }
5691
5692 static void qeth_core_complete(struct ccwgroup_device *gdev)
5693 {
5694         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5695         if (card->discipline && card->discipline->complete)
5696                 card->discipline->complete(gdev);
5697 }
5698
5699 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5700 {
5701         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5702         if (card->discipline && card->discipline->freeze)
5703                 return card->discipline->freeze(gdev);
5704         return 0;
5705 }
5706
5707 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5708 {
5709         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5710         if (card->discipline && card->discipline->thaw)
5711                 return card->discipline->thaw(gdev);
5712         return 0;
5713 }
5714
5715 static int qeth_core_restore(struct ccwgroup_device *gdev)
5716 {
5717         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5718         if (card->discipline && card->discipline->restore)
5719                 return card->discipline->restore(gdev);
5720         return 0;
5721 }
5722
5723 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5724         .driver = {
5725                 .owner = THIS_MODULE,
5726                 .name = "qeth",
5727         },
5728         .setup = qeth_core_probe_device,
5729         .remove = qeth_core_remove_device,
5730         .set_online = qeth_core_set_online,
5731         .set_offline = qeth_core_set_offline,
5732         .shutdown = qeth_core_shutdown,
5733         .prepare = qeth_core_prepare,
5734         .complete = qeth_core_complete,
5735         .freeze = qeth_core_freeze,
5736         .thaw = qeth_core_thaw,
5737         .restore = qeth_core_restore,
5738 };
5739
5740 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5741                                             const char *buf, size_t count)
5742 {
5743         int err;
5744
5745         err = ccwgroup_create_dev(qeth_core_root_dev,
5746                                   &qeth_core_ccwgroup_driver, 3, buf);
5747
5748         return err ? err : count;
5749 }
5750 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5751
5752 static struct attribute *qeth_drv_attrs[] = {
5753         &driver_attr_group.attr,
5754         NULL,
5755 };
5756 static struct attribute_group qeth_drv_attr_group = {
5757         .attrs = qeth_drv_attrs,
5758 };
5759 static const struct attribute_group *qeth_drv_attr_groups[] = {
5760         &qeth_drv_attr_group,
5761         NULL,
5762 };
5763
5764 static struct {
5765         const char str[ETH_GSTRING_LEN];
5766 } qeth_ethtool_stats_keys[] = {
5767 /*  0 */{"rx skbs"},
5768         {"rx buffers"},
5769         {"tx skbs"},
5770         {"tx buffers"},
5771         {"tx skbs no packing"},
5772         {"tx buffers no packing"},
5773         {"tx skbs packing"},
5774         {"tx buffers packing"},
5775         {"tx sg skbs"},
5776         {"tx sg frags"},
5777 /* 10 */{"rx sg skbs"},
5778         {"rx sg frags"},
5779         {"rx sg page allocs"},
5780         {"tx large kbytes"},
5781         {"tx large count"},
5782         {"tx pk state ch n->p"},
5783         {"tx pk state ch p->n"},
5784         {"tx pk watermark low"},
5785         {"tx pk watermark high"},
5786         {"queue 0 buffer usage"},
5787 /* 20 */{"queue 1 buffer usage"},
5788         {"queue 2 buffer usage"},
5789         {"queue 3 buffer usage"},
5790         {"rx poll time"},
5791         {"rx poll count"},
5792         {"rx do_QDIO time"},
5793         {"rx do_QDIO count"},
5794         {"tx handler time"},
5795         {"tx handler count"},
5796         {"tx time"},
5797 /* 30 */{"tx count"},
5798         {"tx do_QDIO time"},
5799         {"tx do_QDIO count"},
5800         {"tx csum"},
5801         {"tx lin"},
5802         {"tx linfail"},
5803         {"cq handler count"},
5804         {"cq handler time"}
5805 };
5806
5807 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5808 {
5809         switch (stringset) {
5810         case ETH_SS_STATS:
5811                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5812         default:
5813                 return -EINVAL;
5814         }
5815 }
5816 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5817
5818 void qeth_core_get_ethtool_stats(struct net_device *dev,
5819                 struct ethtool_stats *stats, u64 *data)
5820 {
5821         struct qeth_card *card = dev->ml_priv;
5822         data[0] = card->stats.rx_packets -
5823                                 card->perf_stats.initial_rx_packets;
5824         data[1] = card->perf_stats.bufs_rec;
5825         data[2] = card->stats.tx_packets -
5826                                 card->perf_stats.initial_tx_packets;
5827         data[3] = card->perf_stats.bufs_sent;
5828         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5829                         - card->perf_stats.skbs_sent_pack;
5830         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5831         data[6] = card->perf_stats.skbs_sent_pack;
5832         data[7] = card->perf_stats.bufs_sent_pack;
5833         data[8] = card->perf_stats.sg_skbs_sent;
5834         data[9] = card->perf_stats.sg_frags_sent;
5835         data[10] = card->perf_stats.sg_skbs_rx;
5836         data[11] = card->perf_stats.sg_frags_rx;
5837         data[12] = card->perf_stats.sg_alloc_page_rx;
5838         data[13] = (card->perf_stats.large_send_bytes >> 10);
5839         data[14] = card->perf_stats.large_send_cnt;
5840         data[15] = card->perf_stats.sc_dp_p;
5841         data[16] = card->perf_stats.sc_p_dp;
5842         data[17] = QETH_LOW_WATERMARK_PACK;
5843         data[18] = QETH_HIGH_WATERMARK_PACK;
5844         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5845         data[20] = (card->qdio.no_out_queues > 1) ?
5846                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5847         data[21] = (card->qdio.no_out_queues > 2) ?
5848                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5849         data[22] = (card->qdio.no_out_queues > 3) ?
5850                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5851         data[23] = card->perf_stats.inbound_time;
5852         data[24] = card->perf_stats.inbound_cnt;
5853         data[25] = card->perf_stats.inbound_do_qdio_time;
5854         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5855         data[27] = card->perf_stats.outbound_handler_time;
5856         data[28] = card->perf_stats.outbound_handler_cnt;
5857         data[29] = card->perf_stats.outbound_time;
5858         data[30] = card->perf_stats.outbound_cnt;
5859         data[31] = card->perf_stats.outbound_do_qdio_time;
5860         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5861         data[33] = card->perf_stats.tx_csum;
5862         data[34] = card->perf_stats.tx_lin;
5863         data[35] = card->perf_stats.tx_linfail;
5864         data[36] = card->perf_stats.cq_cnt;
5865         data[37] = card->perf_stats.cq_time;
5866 }
5867 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5868
5869 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5870 {
5871         switch (stringset) {
5872         case ETH_SS_STATS:
5873                 memcpy(data, &qeth_ethtool_stats_keys,
5874                         sizeof(qeth_ethtool_stats_keys));
5875                 break;
5876         default:
5877                 WARN_ON(1);
5878                 break;
5879         }
5880 }
5881 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5882
5883 void qeth_core_get_drvinfo(struct net_device *dev,
5884                 struct ethtool_drvinfo *info)
5885 {
5886         struct qeth_card *card = dev->ml_priv;
5887
5888         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5889                 sizeof(info->driver));
5890         strlcpy(info->version, "1.0", sizeof(info->version));
5891         strlcpy(info->fw_version, card->info.mcl_level,
5892                 sizeof(info->fw_version));
5893         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5894                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5895 }
5896 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5897
5898 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5899 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5900 /* Always advertize and support all speeds up to specified, and only one     */
5901 /* specified port type.                                                      */
5902 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5903                                 int maxspeed, int porttype)
5904 {
5905         int port_sup, port_adv, spd_sup, spd_adv;
5906
5907         switch (porttype) {
5908         case PORT_TP:
5909                 port_sup = SUPPORTED_TP;
5910                 port_adv = ADVERTISED_TP;
5911                 break;
5912         case PORT_FIBRE:
5913                 port_sup = SUPPORTED_FIBRE;
5914                 port_adv = ADVERTISED_FIBRE;
5915                 break;
5916         default:
5917                 port_sup = SUPPORTED_TP;
5918                 port_adv = ADVERTISED_TP;
5919                 WARN_ON_ONCE(1);
5920         }
5921
5922         /* "Fallthrough" case'es ordered from high to low result in setting  */
5923         /* flags cumulatively, starting from the specified speed and down to */
5924         /* the lowest possible.                                              */
5925         spd_sup = 0;
5926         spd_adv = 0;
5927         switch (maxspeed) {
5928         case SPEED_10000:
5929                 spd_sup |= SUPPORTED_10000baseT_Full;
5930                 spd_adv |= ADVERTISED_10000baseT_Full;
5931         case SPEED_1000:
5932                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5933                 spd_adv |= ADVERTISED_1000baseT_Half |
5934                                                 ADVERTISED_1000baseT_Full;
5935         case SPEED_100:
5936                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5937                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5938         case SPEED_10:
5939                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5940                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5941         break;
5942         default:
5943                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5944                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5945                 WARN_ON_ONCE(1);
5946         }
5947         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5948         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5949 }
5950
5951 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5952                                         struct ethtool_cmd *ecmd)
5953 {
5954         struct qeth_card *card = netdev->ml_priv;
5955         enum qeth_link_types link_type;
5956         struct carrier_info carrier_info;
5957         int rc;
5958         u32 speed;
5959
5960         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5961                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5962         else
5963                 link_type = card->info.link_type;
5964
5965         ecmd->transceiver = XCVR_INTERNAL;
5966         ecmd->duplex = DUPLEX_FULL;
5967         ecmd->autoneg = AUTONEG_ENABLE;
5968
5969         switch (link_type) {
5970         case QETH_LINK_TYPE_FAST_ETH:
5971         case QETH_LINK_TYPE_LANE_ETH100:
5972                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5973                 speed = SPEED_100;
5974                 ecmd->port = PORT_TP;
5975                 break;
5976
5977         case QETH_LINK_TYPE_GBIT_ETH:
5978         case QETH_LINK_TYPE_LANE_ETH1000:
5979                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5980                 speed = SPEED_1000;
5981                 ecmd->port = PORT_FIBRE;
5982                 break;
5983
5984         case QETH_LINK_TYPE_10GBIT_ETH:
5985                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5986                 speed = SPEED_10000;
5987                 ecmd->port = PORT_FIBRE;
5988                 break;
5989
5990         default:
5991                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5992                 speed = SPEED_10;
5993                 ecmd->port = PORT_TP;
5994         }
5995         ethtool_cmd_speed_set(ecmd, speed);
5996
5997         /* Check if we can obtain more accurate information.     */
5998         /* If QUERY_CARD_INFO command is not supported or fails, */
5999         /* just return the heuristics that was filled above.     */
6000         if (!qeth_card_hw_is_reachable(card))
6001                 return -ENODEV;
6002         rc = qeth_query_card_info(card, &carrier_info);
6003         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6004                 return 0;
6005         if (rc) /* report error from the hardware operation */
6006                 return rc;
6007         /* on success, fill in the information got from the hardware */
6008
6009         netdev_dbg(netdev,
6010         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6011                         carrier_info.card_type,
6012                         carrier_info.port_mode,
6013                         carrier_info.port_speed);
6014
6015         /* Update attributes for which we've obtained more authoritative */
6016         /* information, leave the rest the way they where filled above.  */
6017         switch (carrier_info.card_type) {
6018         case CARD_INFO_TYPE_1G_COPPER_A:
6019         case CARD_INFO_TYPE_1G_COPPER_B:
6020                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6021                 ecmd->port = PORT_TP;
6022                 break;
6023         case CARD_INFO_TYPE_1G_FIBRE_A:
6024         case CARD_INFO_TYPE_1G_FIBRE_B:
6025                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6026                 ecmd->port = PORT_FIBRE;
6027                 break;
6028         case CARD_INFO_TYPE_10G_FIBRE_A:
6029         case CARD_INFO_TYPE_10G_FIBRE_B:
6030                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6031                 ecmd->port = PORT_FIBRE;
6032                 break;
6033         }
6034
6035         switch (carrier_info.port_mode) {
6036         case CARD_INFO_PORTM_FULLDUPLEX:
6037                 ecmd->duplex = DUPLEX_FULL;
6038                 break;
6039         case CARD_INFO_PORTM_HALFDUPLEX:
6040                 ecmd->duplex = DUPLEX_HALF;
6041                 break;
6042         }
6043
6044         switch (carrier_info.port_speed) {
6045         case CARD_INFO_PORTS_10M:
6046                 speed = SPEED_10;
6047                 break;
6048         case CARD_INFO_PORTS_100M:
6049                 speed = SPEED_100;
6050                 break;
6051         case CARD_INFO_PORTS_1G:
6052                 speed = SPEED_1000;
6053                 break;
6054         case CARD_INFO_PORTS_10G:
6055                 speed = SPEED_10000;
6056                 break;
6057         }
6058         ethtool_cmd_speed_set(ecmd, speed);
6059
6060         return 0;
6061 }
6062 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6063
6064 /* Callback to handle checksum offload command reply from OSA card.
6065  * Verify that required features have been enabled on the card.
6066  * Return error in hdr->return_code as this value is checked by caller.
6067  *
6068  * Always returns zero to indicate no further messages from the OSA card.
6069  */
6070 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6071                                         struct qeth_reply *reply,
6072                                         unsigned long data)
6073 {
6074         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6075         struct qeth_checksum_cmd *chksum_cb =
6076                                 (struct qeth_checksum_cmd *)reply->param;
6077
6078         QETH_CARD_TEXT(card, 4, "chkdoccb");
6079         if (cmd->hdr.return_code)
6080                 return 0;
6081
6082         memset(chksum_cb, 0, sizeof(*chksum_cb));
6083         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6084                 chksum_cb->supported =
6085                                 cmd->data.setassparms.data.chksum.supported;
6086                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6087         }
6088         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6089                 chksum_cb->supported =
6090                                 cmd->data.setassparms.data.chksum.supported;
6091                 chksum_cb->enabled =
6092                                 cmd->data.setassparms.data.chksum.enabled;
6093                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6094                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6095         }
6096         return 0;
6097 }
6098
6099 /* Send command to OSA card and check results. */
6100 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6101                                      enum qeth_ipa_funcs ipa_func,
6102                                      __u16 cmd_code, long data,
6103                                      struct qeth_checksum_cmd *chksum_cb)
6104 {
6105         struct qeth_cmd_buffer *iob;
6106         int rc = -ENOMEM;
6107
6108         QETH_CARD_TEXT(card, 4, "chkdocmd");
6109         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6110                                        sizeof(__u32), QETH_PROT_IPV4);
6111         if (iob)
6112                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6113                                            qeth_ipa_checksum_run_cmd_cb,
6114                                            chksum_cb);
6115         return rc;
6116 }
6117
6118 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6119 {
6120         const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6121                                         QETH_IPA_CHECKSUM_UDP |
6122                                         QETH_IPA_CHECKSUM_TCP;
6123         struct qeth_checksum_cmd chksum_cb;
6124         int rc;
6125
6126         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6127                                        &chksum_cb);
6128         if (!rc) {
6129                 if ((required_features & chksum_cb.supported) !=
6130                     required_features)
6131                         rc = -EIO;
6132                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6133                          cstype == IPA_INBOUND_CHECKSUM)
6134                         dev_warn(&card->gdev->dev,
6135                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6136                                  QETH_CARD_IFNAME(card));
6137         }
6138         if (rc) {
6139                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6140                 dev_warn(&card->gdev->dev,
6141                          "Starting HW checksumming for %s failed, using SW checksumming\n",
6142                          QETH_CARD_IFNAME(card));
6143                 return rc;
6144         }
6145         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6146                                        chksum_cb.supported, &chksum_cb);
6147         if (!rc) {
6148                 if ((required_features & chksum_cb.enabled) !=
6149                     required_features)
6150                         rc = -EIO;
6151         }
6152         if (rc) {
6153                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6154                 dev_warn(&card->gdev->dev,
6155                          "Enabling HW checksumming for %s failed, using SW checksumming\n",
6156                          QETH_CARD_IFNAME(card));
6157                 return rc;
6158         }
6159
6160         dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6161                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6162         return 0;
6163 }
6164
6165 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6166 {
6167         int rc = (on) ? qeth_send_checksum_on(card, cstype)
6168                       : qeth_send_simple_setassparms(card, cstype,
6169                                                      IPA_CMD_ASS_STOP, 0);
6170         return rc ? -EIO : 0;
6171 }
6172
6173 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6174 {
6175         int rc;
6176
6177         QETH_CARD_TEXT(card, 3, "sttso");
6178
6179         if (on) {
6180                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6181                                                   IPA_CMD_ASS_START, 0);
6182                 if (rc) {
6183                         dev_warn(&card->gdev->dev,
6184                                  "Starting outbound TCP segmentation offload for %s failed\n",
6185                                  QETH_CARD_IFNAME(card));
6186                         return -EIO;
6187                 }
6188                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6189         } else {
6190                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6191                                                   IPA_CMD_ASS_STOP, 0);
6192         }
6193         return rc;
6194 }
6195
6196 /* try to restore device features on a device after recovery */
6197 int qeth_recover_features(struct net_device *dev)
6198 {
6199         struct qeth_card *card = dev->ml_priv;
6200         netdev_features_t recover = dev->features;
6201
6202         if (recover & NETIF_F_IP_CSUM) {
6203                 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
6204                         recover ^= NETIF_F_IP_CSUM;
6205         }
6206         if (recover & NETIF_F_RXCSUM) {
6207                 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
6208                         recover ^= NETIF_F_RXCSUM;
6209         }
6210         if (recover & NETIF_F_TSO) {
6211                 if (qeth_set_ipa_tso(card, 1))
6212                         recover ^= NETIF_F_TSO;
6213         }
6214
6215         if (recover == dev->features)
6216                 return 0;
6217
6218         dev_warn(&card->gdev->dev,
6219                  "Device recovery failed to restore all offload features\n");
6220         dev->features = recover;
6221         return -EIO;
6222 }
6223 EXPORT_SYMBOL_GPL(qeth_recover_features);
6224
6225 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6226 {
6227         struct qeth_card *card = dev->ml_priv;
6228         netdev_features_t changed = dev->features ^ features;
6229         int rc = 0;
6230
6231         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6232         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6233
6234         if ((changed & NETIF_F_IP_CSUM)) {
6235                 rc = qeth_set_ipa_csum(card,
6236                                        features & NETIF_F_IP_CSUM ? 1 : 0,
6237                                        IPA_OUTBOUND_CHECKSUM);
6238                 if (rc)
6239                         changed ^= NETIF_F_IP_CSUM;
6240         }
6241         if ((changed & NETIF_F_RXCSUM)) {
6242                 rc = qeth_set_ipa_csum(card,
6243                                         features & NETIF_F_RXCSUM ? 1 : 0,
6244                                         IPA_INBOUND_CHECKSUM);
6245                 if (rc)
6246                         changed ^= NETIF_F_RXCSUM;
6247         }
6248         if ((changed & NETIF_F_TSO)) {
6249                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6250                 if (rc)
6251                         changed ^= NETIF_F_TSO;
6252         }
6253
6254         /* everything changed successfully? */
6255         if ((dev->features ^ features) == changed)
6256                 return 0;
6257         /* something went wrong. save changed features and return error */
6258         dev->features ^= changed;
6259         return -EIO;
6260 }
6261 EXPORT_SYMBOL_GPL(qeth_set_features);
6262
6263 netdev_features_t qeth_fix_features(struct net_device *dev,
6264                                     netdev_features_t features)
6265 {
6266         struct qeth_card *card = dev->ml_priv;
6267
6268         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6269         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6270                 features &= ~NETIF_F_IP_CSUM;
6271         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6272                 features &= ~NETIF_F_RXCSUM;
6273         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
6274                 features &= ~NETIF_F_TSO;
6275                 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n",
6276                          QETH_CARD_IFNAME(card));
6277         }
6278         /* if the card isn't up, remove features that require hw changes */
6279         if (card->state == CARD_STATE_DOWN ||
6280             card->state == CARD_STATE_RECOVER)
6281                 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
6282                                         NETIF_F_TSO);
6283         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6284         return features;
6285 }
6286 EXPORT_SYMBOL_GPL(qeth_fix_features);
6287
6288 static int __init qeth_core_init(void)
6289 {
6290         int rc;
6291
6292         pr_info("loading core functions\n");
6293         INIT_LIST_HEAD(&qeth_core_card_list.list);
6294         INIT_LIST_HEAD(&qeth_dbf_list);
6295         rwlock_init(&qeth_core_card_list.rwlock);
6296         mutex_init(&qeth_mod_mutex);
6297
6298         qeth_wq = create_singlethread_workqueue("qeth_wq");
6299
6300         rc = qeth_register_dbf_views();
6301         if (rc)
6302                 goto out_err;
6303         qeth_core_root_dev = root_device_register("qeth");
6304         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6305         if (rc)
6306                 goto register_err;
6307         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6308                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6309         if (!qeth_core_header_cache) {
6310                 rc = -ENOMEM;
6311                 goto slab_err;
6312         }
6313         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6314                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6315         if (!qeth_qdio_outbuf_cache) {
6316                 rc = -ENOMEM;
6317                 goto cqslab_err;
6318         }
6319         rc = ccw_driver_register(&qeth_ccw_driver);
6320         if (rc)
6321                 goto ccw_err;
6322         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6323         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6324         if (rc)
6325                 goto ccwgroup_err;
6326
6327         return 0;
6328
6329 ccwgroup_err:
6330         ccw_driver_unregister(&qeth_ccw_driver);
6331 ccw_err:
6332         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6333 cqslab_err:
6334         kmem_cache_destroy(qeth_core_header_cache);
6335 slab_err:
6336         root_device_unregister(qeth_core_root_dev);
6337 register_err:
6338         qeth_unregister_dbf_views();
6339 out_err:
6340         pr_err("Initializing the qeth device driver failed\n");
6341         return rc;
6342 }
6343
6344 static void __exit qeth_core_exit(void)
6345 {
6346         qeth_clear_dbf_list();
6347         destroy_workqueue(qeth_wq);
6348         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6349         ccw_driver_unregister(&qeth_ccw_driver);
6350         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6351         kmem_cache_destroy(qeth_core_header_cache);
6352         root_device_unregister(qeth_core_root_dev);
6353         qeth_unregister_dbf_views();
6354         pr_info("core functions removed\n");
6355 }
6356
6357 module_init(qeth_core_init);
6358 module_exit(qeth_core_exit);
6359 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6360 MODULE_DESCRIPTION("qeth core functions");
6361 MODULE_LICENSE("GPL");