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->ip_list);
1468         INIT_LIST_HEAD(card->ip_tbd_list);
1469         INIT_LIST_HEAD(&card->cmd_waiter_list);
1470         init_waitqueue_head(&card->wait_q);
1471         /* initial options */
1472         qeth_set_intial_options(card);
1473         /* IP address takeover */
1474         INIT_LIST_HEAD(&card->ipato.entries);
1475         card->ipato.enabled = 0;
1476         card->ipato.invert4 = 0;
1477         card->ipato.invert6 = 0;
1478         /* init QDIO stuff */
1479         qeth_init_qdio_info(card);
1480         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1481         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1482         return 0;
1483 }
1484
1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1486 {
1487         struct qeth_card *card = container_of(slr, struct qeth_card,
1488                                         qeth_service_level);
1489         if (card->info.mcl_level[0])
1490                 seq_printf(m, "qeth: %s firmware level %s\n",
1491                         CARD_BUS_ID(card), card->info.mcl_level);
1492 }
1493
1494 static struct qeth_card *qeth_alloc_card(void)
1495 {
1496         struct qeth_card *card;
1497
1498         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1499         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1500         if (!card)
1501                 goto out;
1502         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1503         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1504         if (!card->ip_tbd_list) {
1505                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1506                 goto out_card;
1507         }
1508         if (qeth_setup_channel(&card->read))
1509                 goto out_ip;
1510         if (qeth_setup_channel(&card->write))
1511                 goto out_channel;
1512         card->options.layer2 = -1;
1513         card->qeth_service_level.seq_print = qeth_core_sl_print;
1514         register_service_level(&card->qeth_service_level);
1515         return card;
1516
1517 out_channel:
1518         qeth_clean_channel(&card->read);
1519 out_ip:
1520         kfree(card->ip_tbd_list);
1521 out_card:
1522         kfree(card);
1523 out:
1524         return NULL;
1525 }
1526
1527 static int qeth_determine_card_type(struct qeth_card *card)
1528 {
1529         int i = 0;
1530
1531         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1532
1533         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1534         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1535         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1536                 if ((CARD_RDEV(card)->id.dev_type ==
1537                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1538                     (CARD_RDEV(card)->id.dev_model ==
1539                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1540                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1541                         card->qdio.no_out_queues =
1542                                 known_devices[i][QETH_QUEUE_NO_IND];
1543                         card->qdio.no_in_queues = 1;
1544                         card->info.is_multicast_different =
1545                                 known_devices[i][QETH_MULTICAST_IND];
1546                         qeth_update_from_chp_desc(card);
1547                         return 0;
1548                 }
1549                 i++;
1550         }
1551         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1552         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1553                 "unknown type\n");
1554         return -ENOENT;
1555 }
1556
1557 static int qeth_clear_channel(struct qeth_channel *channel)
1558 {
1559         unsigned long flags;
1560         struct qeth_card *card;
1561         int rc;
1562
1563         card = CARD_FROM_CDEV(channel->ccwdev);
1564         QETH_CARD_TEXT(card, 3, "clearch");
1565         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1566         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1567         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1568
1569         if (rc)
1570                 return rc;
1571         rc = wait_event_interruptible_timeout(card->wait_q,
1572                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1573         if (rc == -ERESTARTSYS)
1574                 return rc;
1575         if (channel->state != CH_STATE_STOPPED)
1576                 return -ETIME;
1577         channel->state = CH_STATE_DOWN;
1578         return 0;
1579 }
1580
1581 static int qeth_halt_channel(struct qeth_channel *channel)
1582 {
1583         unsigned long flags;
1584         struct qeth_card *card;
1585         int rc;
1586
1587         card = CARD_FROM_CDEV(channel->ccwdev);
1588         QETH_CARD_TEXT(card, 3, "haltch");
1589         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1590         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1591         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1592
1593         if (rc)
1594                 return rc;
1595         rc = wait_event_interruptible_timeout(card->wait_q,
1596                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1597         if (rc == -ERESTARTSYS)
1598                 return rc;
1599         if (channel->state != CH_STATE_HALTED)
1600                 return -ETIME;
1601         return 0;
1602 }
1603
1604 static int qeth_halt_channels(struct qeth_card *card)
1605 {
1606         int rc1 = 0, rc2 = 0, rc3 = 0;
1607
1608         QETH_CARD_TEXT(card, 3, "haltchs");
1609         rc1 = qeth_halt_channel(&card->read);
1610         rc2 = qeth_halt_channel(&card->write);
1611         rc3 = qeth_halt_channel(&card->data);
1612         if (rc1)
1613                 return rc1;
1614         if (rc2)
1615                 return rc2;
1616         return rc3;
1617 }
1618
1619 static int qeth_clear_channels(struct qeth_card *card)
1620 {
1621         int rc1 = 0, rc2 = 0, rc3 = 0;
1622
1623         QETH_CARD_TEXT(card, 3, "clearchs");
1624         rc1 = qeth_clear_channel(&card->read);
1625         rc2 = qeth_clear_channel(&card->write);
1626         rc3 = qeth_clear_channel(&card->data);
1627         if (rc1)
1628                 return rc1;
1629         if (rc2)
1630                 return rc2;
1631         return rc3;
1632 }
1633
1634 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1635 {
1636         int rc = 0;
1637
1638         QETH_CARD_TEXT(card, 3, "clhacrd");
1639
1640         if (halt)
1641                 rc = qeth_halt_channels(card);
1642         if (rc)
1643                 return rc;
1644         return qeth_clear_channels(card);
1645 }
1646
1647 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1648 {
1649         int rc = 0;
1650
1651         QETH_CARD_TEXT(card, 3, "qdioclr");
1652         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1653                 QETH_QDIO_CLEANING)) {
1654         case QETH_QDIO_ESTABLISHED:
1655                 if (card->info.type == QETH_CARD_TYPE_IQD)
1656                         rc = qdio_shutdown(CARD_DDEV(card),
1657                                 QDIO_FLAG_CLEANUP_USING_HALT);
1658                 else
1659                         rc = qdio_shutdown(CARD_DDEV(card),
1660                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1661                 if (rc)
1662                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1663                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1664                 break;
1665         case QETH_QDIO_CLEANING:
1666                 return rc;
1667         default:
1668                 break;
1669         }
1670         rc = qeth_clear_halt_card(card, use_halt);
1671         if (rc)
1672                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1673         card->state = CARD_STATE_DOWN;
1674         return rc;
1675 }
1676 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1677
1678 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1679                                int *length)
1680 {
1681         struct ciw *ciw;
1682         char *rcd_buf;
1683         int ret;
1684         struct qeth_channel *channel = &card->data;
1685         unsigned long flags;
1686
1687         /*
1688          * scan for RCD command in extended SenseID data
1689          */
1690         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1691         if (!ciw || ciw->cmd == 0)
1692                 return -EOPNOTSUPP;
1693         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1694         if (!rcd_buf)
1695                 return -ENOMEM;
1696
1697         channel->ccw.cmd_code = ciw->cmd;
1698         channel->ccw.cda = (__u32) __pa(rcd_buf);
1699         channel->ccw.count = ciw->count;
1700         channel->ccw.flags = CCW_FLAG_SLI;
1701         channel->state = CH_STATE_RCD;
1702         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1703         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1704                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1705                                        QETH_RCD_TIMEOUT);
1706         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1707         if (!ret)
1708                 wait_event(card->wait_q,
1709                            (channel->state == CH_STATE_RCD_DONE ||
1710                             channel->state == CH_STATE_DOWN));
1711         if (channel->state == CH_STATE_DOWN)
1712                 ret = -EIO;
1713         else
1714                 channel->state = CH_STATE_DOWN;
1715         if (ret) {
1716                 kfree(rcd_buf);
1717                 *buffer = NULL;
1718                 *length = 0;
1719         } else {
1720                 *length = ciw->count;
1721                 *buffer = rcd_buf;
1722         }
1723         return ret;
1724 }
1725
1726 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1727 {
1728         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1729         card->info.chpid = prcd[30];
1730         card->info.unit_addr2 = prcd[31];
1731         card->info.cula = prcd[63];
1732         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1733                                (prcd[0x11] == _ascebc['M']));
1734 }
1735
1736 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1737 {
1738         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1739
1740         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1741             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1742                 card->info.blkt.time_total = 0;
1743                 card->info.blkt.inter_packet = 0;
1744                 card->info.blkt.inter_packet_jumbo = 0;
1745         } else {
1746                 card->info.blkt.time_total = 250;
1747                 card->info.blkt.inter_packet = 5;
1748                 card->info.blkt.inter_packet_jumbo = 15;
1749         }
1750 }
1751
1752 static void qeth_init_tokens(struct qeth_card *card)
1753 {
1754         card->token.issuer_rm_w = 0x00010103UL;
1755         card->token.cm_filter_w = 0x00010108UL;
1756         card->token.cm_connection_w = 0x0001010aUL;
1757         card->token.ulp_filter_w = 0x0001010bUL;
1758         card->token.ulp_connection_w = 0x0001010dUL;
1759 }
1760
1761 static void qeth_init_func_level(struct qeth_card *card)
1762 {
1763         switch (card->info.type) {
1764         case QETH_CARD_TYPE_IQD:
1765                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1766                 break;
1767         case QETH_CARD_TYPE_OSD:
1768         case QETH_CARD_TYPE_OSN:
1769                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1770                 break;
1771         default:
1772                 break;
1773         }
1774 }
1775
1776 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1777                 void (*idx_reply_cb)(struct qeth_channel *,
1778                         struct qeth_cmd_buffer *))
1779 {
1780         struct qeth_cmd_buffer *iob;
1781         unsigned long flags;
1782         int rc;
1783         struct qeth_card *card;
1784
1785         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1786         card = CARD_FROM_CDEV(channel->ccwdev);
1787         iob = qeth_get_buffer(channel);
1788         if (!iob)
1789                 return -ENOMEM;
1790         iob->callback = idx_reply_cb;
1791         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1792         channel->ccw.count = QETH_BUFSIZE;
1793         channel->ccw.cda = (__u32) __pa(iob->data);
1794
1795         wait_event(card->wait_q,
1796                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1797         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1798         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1799         rc = ccw_device_start(channel->ccwdev,
1800                               &channel->ccw, (addr_t) iob, 0, 0);
1801         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1802
1803         if (rc) {
1804                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1805                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1806                 atomic_set(&channel->irq_pending, 0);
1807                 wake_up(&card->wait_q);
1808                 return rc;
1809         }
1810         rc = wait_event_interruptible_timeout(card->wait_q,
1811                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1812         if (rc == -ERESTARTSYS)
1813                 return rc;
1814         if (channel->state != CH_STATE_UP) {
1815                 rc = -ETIME;
1816                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1817                 qeth_clear_cmd_buffers(channel);
1818         } else
1819                 rc = 0;
1820         return rc;
1821 }
1822
1823 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1824                 void (*idx_reply_cb)(struct qeth_channel *,
1825                         struct qeth_cmd_buffer *))
1826 {
1827         struct qeth_card *card;
1828         struct qeth_cmd_buffer *iob;
1829         unsigned long flags;
1830         __u16 temp;
1831         __u8 tmp;
1832         int rc;
1833         struct ccw_dev_id temp_devid;
1834
1835         card = CARD_FROM_CDEV(channel->ccwdev);
1836
1837         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1838
1839         iob = qeth_get_buffer(channel);
1840         if (!iob)
1841                 return -ENOMEM;
1842         iob->callback = idx_reply_cb;
1843         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1844         channel->ccw.count = IDX_ACTIVATE_SIZE;
1845         channel->ccw.cda = (__u32) __pa(iob->data);
1846         if (channel == &card->write) {
1847                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1848                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1849                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1850                 card->seqno.trans_hdr++;
1851         } else {
1852                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1853                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1854                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1855         }
1856         tmp = ((__u8)card->info.portno) | 0x80;
1857         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1858         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1859                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1860         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1861                &card->info.func_level, sizeof(__u16));
1862         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1863         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1864         temp = (card->info.cula << 8) + card->info.unit_addr2;
1865         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1866
1867         wait_event(card->wait_q,
1868                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1869         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1870         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1871         rc = ccw_device_start(channel->ccwdev,
1872                               &channel->ccw, (addr_t) iob, 0, 0);
1873         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1874
1875         if (rc) {
1876                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1877                         rc);
1878                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1879                 atomic_set(&channel->irq_pending, 0);
1880                 wake_up(&card->wait_q);
1881                 return rc;
1882         }
1883         rc = wait_event_interruptible_timeout(card->wait_q,
1884                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1885         if (rc == -ERESTARTSYS)
1886                 return rc;
1887         if (channel->state != CH_STATE_ACTIVATING) {
1888                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1889                         " failed to recover an error on the device\n");
1890                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1891                         dev_name(&channel->ccwdev->dev));
1892                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1893                 qeth_clear_cmd_buffers(channel);
1894                 return -ETIME;
1895         }
1896         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1897 }
1898
1899 static int qeth_peer_func_level(int level)
1900 {
1901         if ((level & 0xff) == 8)
1902                 return (level & 0xff) + 0x400;
1903         if (((level >> 8) & 3) == 1)
1904                 return (level & 0xff) + 0x200;
1905         return level;
1906 }
1907
1908 static void qeth_idx_write_cb(struct qeth_channel *channel,
1909                 struct qeth_cmd_buffer *iob)
1910 {
1911         struct qeth_card *card;
1912         __u16 temp;
1913
1914         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1915
1916         if (channel->state == CH_STATE_DOWN) {
1917                 channel->state = CH_STATE_ACTIVATING;
1918                 goto out;
1919         }
1920         card = CARD_FROM_CDEV(channel->ccwdev);
1921
1922         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1923                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1924                         dev_err(&card->write.ccwdev->dev,
1925                                 "The adapter is used exclusively by another "
1926                                 "host\n");
1927                 else
1928                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1929                                 " negative reply\n",
1930                                 dev_name(&card->write.ccwdev->dev));
1931                 goto out;
1932         }
1933         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1934         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1935                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1936                         "function level mismatch (sent: 0x%x, received: "
1937                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1938                         card->info.func_level, temp);
1939                 goto out;
1940         }
1941         channel->state = CH_STATE_UP;
1942 out:
1943         qeth_release_buffer(channel, iob);
1944 }
1945
1946 static void qeth_idx_read_cb(struct qeth_channel *channel,
1947                 struct qeth_cmd_buffer *iob)
1948 {
1949         struct qeth_card *card;
1950         __u16 temp;
1951
1952         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1953         if (channel->state == CH_STATE_DOWN) {
1954                 channel->state = CH_STATE_ACTIVATING;
1955                 goto out;
1956         }
1957
1958         card = CARD_FROM_CDEV(channel->ccwdev);
1959         if (qeth_check_idx_response(card, iob->data))
1960                         goto out;
1961
1962         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1963                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1964                 case QETH_IDX_ACT_ERR_EXCL:
1965                         dev_err(&card->write.ccwdev->dev,
1966                                 "The adapter is used exclusively by another "
1967                                 "host\n");
1968                         break;
1969                 case QETH_IDX_ACT_ERR_AUTH:
1970                 case QETH_IDX_ACT_ERR_AUTH_USER:
1971                         dev_err(&card->read.ccwdev->dev,
1972                                 "Setting the device online failed because of "
1973                                 "insufficient authorization\n");
1974                         break;
1975                 default:
1976                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1977                                 " negative reply\n",
1978                                 dev_name(&card->read.ccwdev->dev));
1979                 }
1980                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1981                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1982                 goto out;
1983         }
1984
1985         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1986         if (temp != qeth_peer_func_level(card->info.func_level)) {
1987                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1988                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1989                         dev_name(&card->read.ccwdev->dev),
1990                         card->info.func_level, temp);
1991                 goto out;
1992         }
1993         memcpy(&card->token.issuer_rm_r,
1994                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1995                QETH_MPC_TOKEN_LENGTH);
1996         memcpy(&card->info.mcl_level[0],
1997                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1998         channel->state = CH_STATE_UP;
1999 out:
2000         qeth_release_buffer(channel, iob);
2001 }
2002
2003 void qeth_prepare_control_data(struct qeth_card *card, int len,
2004                 struct qeth_cmd_buffer *iob)
2005 {
2006         qeth_setup_ccw(&card->write, iob->data, len);
2007         iob->callback = qeth_release_buffer;
2008
2009         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2010                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2011         card->seqno.trans_hdr++;
2012         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2013                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2014         card->seqno.pdu_hdr++;
2015         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2016                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2017         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2018 }
2019 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2020
2021 /**
2022  * qeth_send_control_data() -   send control command to the card
2023  * @card:                       qeth_card structure pointer
2024  * @len:                        size of the command buffer
2025  * @iob:                        qeth_cmd_buffer pointer
2026  * @reply_cb:                   callback function pointer
2027  * @cb_card:                    pointer to the qeth_card structure
2028  * @cb_reply:                   pointer to the qeth_reply structure
2029  * @cb_cmd:                     pointer to the original iob for non-IPA
2030  *                              commands, or to the qeth_ipa_cmd structure
2031  *                              for the IPA commands.
2032  * @reply_param:                private pointer passed to the callback
2033  *
2034  * Returns the value of the `return_code' field of the response
2035  * block returned from the hardware, or other error indication.
2036  * Value of zero indicates successful execution of the command.
2037  *
2038  * Callback function gets called one or more times, with cb_cmd
2039  * pointing to the response returned by the hardware. Callback
2040  * function must return non-zero if more reply blocks are expected,
2041  * and zero if the last or only reply block is received. Callback
2042  * function can get the value of the reply_param pointer from the
2043  * field 'param' of the structure qeth_reply.
2044  */
2045
2046 int qeth_send_control_data(struct qeth_card *card, int len,
2047                 struct qeth_cmd_buffer *iob,
2048                 int (*reply_cb)(struct qeth_card *cb_card,
2049                                 struct qeth_reply *cb_reply,
2050                                 unsigned long cb_cmd),
2051                 void *reply_param)
2052 {
2053         int rc;
2054         unsigned long flags;
2055         struct qeth_reply *reply = NULL;
2056         unsigned long timeout, event_timeout;
2057         struct qeth_ipa_cmd *cmd;
2058
2059         QETH_CARD_TEXT(card, 2, "sendctl");
2060
2061         if (card->read_or_write_problem) {
2062                 qeth_release_buffer(iob->channel, iob);
2063                 return -EIO;
2064         }
2065         reply = qeth_alloc_reply(card);
2066         if (!reply) {
2067                 return -ENOMEM;
2068         }
2069         reply->callback = reply_cb;
2070         reply->param = reply_param;
2071         if (card->state == CARD_STATE_DOWN)
2072                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2073         else
2074                 reply->seqno = card->seqno.ipa++;
2075         init_waitqueue_head(&reply->wait_q);
2076         spin_lock_irqsave(&card->lock, flags);
2077         list_add_tail(&reply->list, &card->cmd_waiter_list);
2078         spin_unlock_irqrestore(&card->lock, flags);
2079         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2080
2081         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2082         qeth_prepare_control_data(card, len, iob);
2083
2084         if (IS_IPA(iob->data))
2085                 event_timeout = QETH_IPA_TIMEOUT;
2086         else
2087                 event_timeout = QETH_TIMEOUT;
2088         timeout = jiffies + event_timeout;
2089
2090         QETH_CARD_TEXT(card, 6, "noirqpnd");
2091         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2092         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2093                               (addr_t) iob, 0, 0);
2094         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2095         if (rc) {
2096                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2097                         "ccw_device_start rc = %i\n",
2098                         dev_name(&card->write.ccwdev->dev), rc);
2099                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2100                 spin_lock_irqsave(&card->lock, flags);
2101                 list_del_init(&reply->list);
2102                 qeth_put_reply(reply);
2103                 spin_unlock_irqrestore(&card->lock, flags);
2104                 qeth_release_buffer(iob->channel, iob);
2105                 atomic_set(&card->write.irq_pending, 0);
2106                 wake_up(&card->wait_q);
2107                 return rc;
2108         }
2109
2110         /* we have only one long running ipassist, since we can ensure
2111            process context of this command we can sleep */
2112         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2113         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2114             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2115                 if (!wait_event_timeout(reply->wait_q,
2116                     atomic_read(&reply->received), event_timeout))
2117                         goto time_err;
2118         } else {
2119                 while (!atomic_read(&reply->received)) {
2120                         if (time_after(jiffies, timeout))
2121                                 goto time_err;
2122                         cpu_relax();
2123                 }
2124         }
2125
2126         if (reply->rc == -EIO)
2127                 goto error;
2128         rc = reply->rc;
2129         qeth_put_reply(reply);
2130         return rc;
2131
2132 time_err:
2133         reply->rc = -ETIME;
2134         spin_lock_irqsave(&reply->card->lock, flags);
2135         list_del_init(&reply->list);
2136         spin_unlock_irqrestore(&reply->card->lock, flags);
2137         atomic_inc(&reply->received);
2138 error:
2139         atomic_set(&card->write.irq_pending, 0);
2140         qeth_release_buffer(iob->channel, iob);
2141         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2142         rc = reply->rc;
2143         qeth_put_reply(reply);
2144         return rc;
2145 }
2146 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2147
2148 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2149                 unsigned long data)
2150 {
2151         struct qeth_cmd_buffer *iob;
2152
2153         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2154
2155         iob = (struct qeth_cmd_buffer *) data;
2156         memcpy(&card->token.cm_filter_r,
2157                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2158                QETH_MPC_TOKEN_LENGTH);
2159         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2160         return 0;
2161 }
2162
2163 static int qeth_cm_enable(struct qeth_card *card)
2164 {
2165         int rc;
2166         struct qeth_cmd_buffer *iob;
2167
2168         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2169
2170         iob = qeth_wait_for_buffer(&card->write);
2171         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2172         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2173                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2174         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2175                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2176
2177         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2178                                     qeth_cm_enable_cb, NULL);
2179         return rc;
2180 }
2181
2182 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2183                 unsigned long data)
2184 {
2185
2186         struct qeth_cmd_buffer *iob;
2187
2188         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2189
2190         iob = (struct qeth_cmd_buffer *) data;
2191         memcpy(&card->token.cm_connection_r,
2192                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2193                QETH_MPC_TOKEN_LENGTH);
2194         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2195         return 0;
2196 }
2197
2198 static int qeth_cm_setup(struct qeth_card *card)
2199 {
2200         int rc;
2201         struct qeth_cmd_buffer *iob;
2202
2203         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2204
2205         iob = qeth_wait_for_buffer(&card->write);
2206         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2207         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2208                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2209         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2210                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2211         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2212                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2213         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2214                                     qeth_cm_setup_cb, NULL);
2215         return rc;
2216
2217 }
2218
2219 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2220 {
2221         switch (card->info.type) {
2222         case QETH_CARD_TYPE_UNKNOWN:
2223                 return 1500;
2224         case QETH_CARD_TYPE_IQD:
2225                 return card->info.max_mtu;
2226         case QETH_CARD_TYPE_OSD:
2227                 switch (card->info.link_type) {
2228                 case QETH_LINK_TYPE_HSTR:
2229                 case QETH_LINK_TYPE_LANE_TR:
2230                         return 2000;
2231                 default:
2232                         return card->options.layer2 ? 1500 : 1492;
2233                 }
2234         case QETH_CARD_TYPE_OSM:
2235         case QETH_CARD_TYPE_OSX:
2236                 return card->options.layer2 ? 1500 : 1492;
2237         default:
2238                 return 1500;
2239         }
2240 }
2241
2242 static inline int qeth_get_mtu_outof_framesize(int framesize)
2243 {
2244         switch (framesize) {
2245         case 0x4000:
2246                 return 8192;
2247         case 0x6000:
2248                 return 16384;
2249         case 0xa000:
2250                 return 32768;
2251         case 0xffff:
2252                 return 57344;
2253         default:
2254                 return 0;
2255         }
2256 }
2257
2258 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2259 {
2260         switch (card->info.type) {
2261         case QETH_CARD_TYPE_OSD:
2262         case QETH_CARD_TYPE_OSM:
2263         case QETH_CARD_TYPE_OSX:
2264         case QETH_CARD_TYPE_IQD:
2265                 return ((mtu >= 576) &&
2266                         (mtu <= card->info.max_mtu));
2267         case QETH_CARD_TYPE_OSN:
2268         case QETH_CARD_TYPE_UNKNOWN:
2269         default:
2270                 return 1;
2271         }
2272 }
2273
2274 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2275                 unsigned long data)
2276 {
2277
2278         __u16 mtu, framesize;
2279         __u16 len;
2280         __u8 link_type;
2281         struct qeth_cmd_buffer *iob;
2282
2283         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2284
2285         iob = (struct qeth_cmd_buffer *) data;
2286         memcpy(&card->token.ulp_filter_r,
2287                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2288                QETH_MPC_TOKEN_LENGTH);
2289         if (card->info.type == QETH_CARD_TYPE_IQD) {
2290                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2291                 mtu = qeth_get_mtu_outof_framesize(framesize);
2292                 if (!mtu) {
2293                         iob->rc = -EINVAL;
2294                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2295                         return 0;
2296                 }
2297                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2298                         /* frame size has changed */
2299                         if (card->dev &&
2300                             ((card->dev->mtu == card->info.initial_mtu) ||
2301                              (card->dev->mtu > mtu)))
2302                                 card->dev->mtu = mtu;
2303                         qeth_free_qdio_buffers(card);
2304                 }
2305                 card->info.initial_mtu = mtu;
2306                 card->info.max_mtu = mtu;
2307                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2308         } else {
2309                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2310                         iob->data);
2311                 card->info.initial_mtu = min(card->info.max_mtu,
2312                                         qeth_get_initial_mtu_for_card(card));
2313                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2314         }
2315
2316         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2317         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2318                 memcpy(&link_type,
2319                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2320                 card->info.link_type = link_type;
2321         } else
2322                 card->info.link_type = 0;
2323         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2324         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2325         return 0;
2326 }
2327
2328 static int qeth_ulp_enable(struct qeth_card *card)
2329 {
2330         int rc;
2331         char prot_type;
2332         struct qeth_cmd_buffer *iob;
2333
2334         /*FIXME: trace view callbacks*/
2335         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2336
2337         iob = qeth_wait_for_buffer(&card->write);
2338         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2339
2340         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2341                 (__u8) card->info.portno;
2342         if (card->options.layer2)
2343                 if (card->info.type == QETH_CARD_TYPE_OSN)
2344                         prot_type = QETH_PROT_OSN2;
2345                 else
2346                         prot_type = QETH_PROT_LAYER2;
2347         else
2348                 prot_type = QETH_PROT_TCPIP;
2349
2350         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2351         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2352                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2353         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2354                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2355         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2356                                     qeth_ulp_enable_cb, NULL);
2357         return rc;
2358
2359 }
2360
2361 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2362                 unsigned long data)
2363 {
2364         struct qeth_cmd_buffer *iob;
2365
2366         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2367
2368         iob = (struct qeth_cmd_buffer *) data;
2369         memcpy(&card->token.ulp_connection_r,
2370                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2371                QETH_MPC_TOKEN_LENGTH);
2372         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2373                      3)) {
2374                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2375                 dev_err(&card->gdev->dev, "A connection could not be "
2376                         "established because of an OLM limit\n");
2377                 iob->rc = -EMLINK;
2378         }
2379         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2380         return 0;
2381 }
2382
2383 static int qeth_ulp_setup(struct qeth_card *card)
2384 {
2385         int rc;
2386         __u16 temp;
2387         struct qeth_cmd_buffer *iob;
2388         struct ccw_dev_id dev_id;
2389
2390         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2391
2392         iob = qeth_wait_for_buffer(&card->write);
2393         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2394
2395         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2396                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2397         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2398                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2399         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2400                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2401
2402         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2403         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2404         temp = (card->info.cula << 8) + card->info.unit_addr2;
2405         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2406         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2407                                     qeth_ulp_setup_cb, NULL);
2408         return rc;
2409 }
2410
2411 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2412 {
2413         int rc;
2414         struct qeth_qdio_out_buffer *newbuf;
2415
2416         rc = 0;
2417         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2418         if (!newbuf) {
2419                 rc = -ENOMEM;
2420                 goto out;
2421         }
2422         newbuf->buffer = q->qdio_bufs[bidx];
2423         skb_queue_head_init(&newbuf->skb_list);
2424         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2425         newbuf->q = q;
2426         newbuf->aob = NULL;
2427         newbuf->next_pending = q->bufs[bidx];
2428         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2429         q->bufs[bidx] = newbuf;
2430         if (q->bufstates) {
2431                 q->bufstates[bidx].user = newbuf;
2432                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2433                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2434                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2435                                 (long) newbuf->next_pending);
2436         }
2437 out:
2438         return rc;
2439 }
2440
2441 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2442 {
2443         if (!q)
2444                 return;
2445
2446         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2447         kfree(q);
2448 }
2449
2450 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2451 {
2452         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2453
2454         if (!q)
2455                 return NULL;
2456
2457         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2458                 kfree(q);
2459                 return NULL;
2460         }
2461         return q;
2462 }
2463
2464 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2465 {
2466         int i, j;
2467
2468         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2469
2470         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2471                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2472                 return 0;
2473
2474         QETH_DBF_TEXT(SETUP, 2, "inq");
2475         card->qdio.in_q = qeth_alloc_qdio_queue();
2476         if (!card->qdio.in_q)
2477                 goto out_nomem;
2478
2479         /* inbound buffer pool */
2480         if (qeth_alloc_buffer_pool(card))
2481                 goto out_freeinq;
2482
2483         /* outbound */
2484         card->qdio.out_qs =
2485                 kzalloc(card->qdio.no_out_queues *
2486                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2487         if (!card->qdio.out_qs)
2488                 goto out_freepool;
2489         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2490                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2491                 if (!card->qdio.out_qs[i])
2492                         goto out_freeoutq;
2493                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2494                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2495                 card->qdio.out_qs[i]->queue_no = i;
2496                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2497                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2498                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2499                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2500                                 goto out_freeoutqbufs;
2501                 }
2502         }
2503
2504         /* completion */
2505         if (qeth_alloc_cq(card))
2506                 goto out_freeoutq;
2507
2508         return 0;
2509
2510 out_freeoutqbufs:
2511         while (j > 0) {
2512                 --j;
2513                 kmem_cache_free(qeth_qdio_outbuf_cache,
2514                                 card->qdio.out_qs[i]->bufs[j]);
2515                 card->qdio.out_qs[i]->bufs[j] = NULL;
2516         }
2517 out_freeoutq:
2518         while (i > 0) {
2519                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2520                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2521         }
2522         kfree(card->qdio.out_qs);
2523         card->qdio.out_qs = NULL;
2524 out_freepool:
2525         qeth_free_buffer_pool(card);
2526 out_freeinq:
2527         qeth_free_qdio_queue(card->qdio.in_q);
2528         card->qdio.in_q = NULL;
2529 out_nomem:
2530         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2531         return -ENOMEM;
2532 }
2533
2534 static void qeth_free_qdio_buffers(struct qeth_card *card)
2535 {
2536         int i, j;
2537
2538         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2539                 QETH_QDIO_UNINITIALIZED)
2540                 return;
2541
2542         qeth_free_cq(card);
2543         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2544         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2545                 if (card->qdio.in_q->bufs[j].rx_skb)
2546                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2547         }
2548         qeth_free_qdio_queue(card->qdio.in_q);
2549         card->qdio.in_q = NULL;
2550         /* inbound buffer pool */
2551         qeth_free_buffer_pool(card);
2552         /* free outbound qdio_qs */
2553         if (card->qdio.out_qs) {
2554                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2555                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2556                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2557                 }
2558                 kfree(card->qdio.out_qs);
2559                 card->qdio.out_qs = NULL;
2560         }
2561 }
2562
2563 static void qeth_create_qib_param_field(struct qeth_card *card,
2564                 char *param_field)
2565 {
2566
2567         param_field[0] = _ascebc['P'];
2568         param_field[1] = _ascebc['C'];
2569         param_field[2] = _ascebc['I'];
2570         param_field[3] = _ascebc['T'];
2571         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2572         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2573         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2574 }
2575
2576 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2577                 char *param_field)
2578 {
2579         param_field[16] = _ascebc['B'];
2580         param_field[17] = _ascebc['L'];
2581         param_field[18] = _ascebc['K'];
2582         param_field[19] = _ascebc['T'];
2583         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2584         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2585         *((unsigned int *) (&param_field[28])) =
2586                 card->info.blkt.inter_packet_jumbo;
2587 }
2588
2589 static int qeth_qdio_activate(struct qeth_card *card)
2590 {
2591         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2592         return qdio_activate(CARD_DDEV(card));
2593 }
2594
2595 static int qeth_dm_act(struct qeth_card *card)
2596 {
2597         int rc;
2598         struct qeth_cmd_buffer *iob;
2599
2600         QETH_DBF_TEXT(SETUP, 2, "dmact");
2601
2602         iob = qeth_wait_for_buffer(&card->write);
2603         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2604
2605         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2606                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2607         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2608                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2609         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2610         return rc;
2611 }
2612
2613 static int qeth_mpc_initialize(struct qeth_card *card)
2614 {
2615         int rc;
2616
2617         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2618
2619         rc = qeth_issue_next_read(card);
2620         if (rc) {
2621                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2622                 return rc;
2623         }
2624         rc = qeth_cm_enable(card);
2625         if (rc) {
2626                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2627                 goto out_qdio;
2628         }
2629         rc = qeth_cm_setup(card);
2630         if (rc) {
2631                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2632                 goto out_qdio;
2633         }
2634         rc = qeth_ulp_enable(card);
2635         if (rc) {
2636                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2637                 goto out_qdio;
2638         }
2639         rc = qeth_ulp_setup(card);
2640         if (rc) {
2641                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2642                 goto out_qdio;
2643         }
2644         rc = qeth_alloc_qdio_buffers(card);
2645         if (rc) {
2646                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2647                 goto out_qdio;
2648         }
2649         rc = qeth_qdio_establish(card);
2650         if (rc) {
2651                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2652                 qeth_free_qdio_buffers(card);
2653                 goto out_qdio;
2654         }
2655         rc = qeth_qdio_activate(card);
2656         if (rc) {
2657                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2658                 goto out_qdio;
2659         }
2660         rc = qeth_dm_act(card);
2661         if (rc) {
2662                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2663                 goto out_qdio;
2664         }
2665
2666         return 0;
2667 out_qdio:
2668         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2669         qdio_free(CARD_DDEV(card));
2670         return rc;
2671 }
2672
2673 void qeth_print_status_message(struct qeth_card *card)
2674 {
2675         switch (card->info.type) {
2676         case QETH_CARD_TYPE_OSD:
2677         case QETH_CARD_TYPE_OSM:
2678         case QETH_CARD_TYPE_OSX:
2679                 /* VM will use a non-zero first character
2680                  * to indicate a HiperSockets like reporting
2681                  * of the level OSA sets the first character to zero
2682                  * */
2683                 if (!card->info.mcl_level[0]) {
2684                         sprintf(card->info.mcl_level, "%02x%02x",
2685                                 card->info.mcl_level[2],
2686                                 card->info.mcl_level[3]);
2687                         break;
2688                 }
2689                 /* fallthrough */
2690         case QETH_CARD_TYPE_IQD:
2691                 if ((card->info.guestlan) ||
2692                     (card->info.mcl_level[0] & 0x80)) {
2693                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2694                                 card->info.mcl_level[0]];
2695                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2696                                 card->info.mcl_level[1]];
2697                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2698                                 card->info.mcl_level[2]];
2699                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2700                                 card->info.mcl_level[3]];
2701                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2702                 }
2703                 break;
2704         default:
2705                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2706         }
2707         dev_info(&card->gdev->dev,
2708                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2709                  qeth_get_cardname(card),
2710                  (card->info.mcl_level[0]) ? " (level: " : "",
2711                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2712                  (card->info.mcl_level[0]) ? ")" : "",
2713                  qeth_get_cardname_short(card));
2714 }
2715 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2716
2717 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2718 {
2719         struct qeth_buffer_pool_entry *entry;
2720
2721         QETH_CARD_TEXT(card, 5, "inwrklst");
2722
2723         list_for_each_entry(entry,
2724                             &card->qdio.init_pool.entry_list, init_list) {
2725                 qeth_put_buffer_pool_entry(card, entry);
2726         }
2727 }
2728
2729 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2730                 struct qeth_card *card)
2731 {
2732         struct list_head *plh;
2733         struct qeth_buffer_pool_entry *entry;
2734         int i, free;
2735         struct page *page;
2736
2737         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2738                 return NULL;
2739
2740         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2741                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2742                 free = 1;
2743                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2744                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2745                                 free = 0;
2746                                 break;
2747                         }
2748                 }
2749                 if (free) {
2750                         list_del_init(&entry->list);
2751                         return entry;
2752                 }
2753         }
2754
2755         /* no free buffer in pool so take first one and swap pages */
2756         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2757                         struct qeth_buffer_pool_entry, list);
2758         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2759                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2760                         page = alloc_page(GFP_ATOMIC);
2761                         if (!page) {
2762                                 return NULL;
2763                         } else {
2764                                 free_page((unsigned long)entry->elements[i]);
2765                                 entry->elements[i] = page_address(page);
2766                                 if (card->options.performance_stats)
2767                                         card->perf_stats.sg_alloc_page_rx++;
2768                         }
2769                 }
2770         }
2771         list_del_init(&entry->list);
2772         return entry;
2773 }
2774
2775 static int qeth_init_input_buffer(struct qeth_card *card,
2776                 struct qeth_qdio_buffer *buf)
2777 {
2778         struct qeth_buffer_pool_entry *pool_entry;
2779         int i;
2780
2781         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2782                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2783                 if (!buf->rx_skb)
2784                         return 1;
2785         }
2786
2787         pool_entry = qeth_find_free_buffer_pool_entry(card);
2788         if (!pool_entry)
2789                 return 1;
2790
2791         /*
2792          * since the buffer is accessed only from the input_tasklet
2793          * there shouldn't be a need to synchronize; also, since we use
2794          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2795          * buffers
2796          */
2797
2798         buf->pool_entry = pool_entry;
2799         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2800                 buf->buffer->element[i].length = PAGE_SIZE;
2801                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2802                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2803                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2804                 else
2805                         buf->buffer->element[i].eflags = 0;
2806                 buf->buffer->element[i].sflags = 0;
2807         }
2808         return 0;
2809 }
2810
2811 int qeth_init_qdio_queues(struct qeth_card *card)
2812 {
2813         int i, j;
2814         int rc;
2815
2816         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2817
2818         /* inbound queue */
2819         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2820                            QDIO_MAX_BUFFERS_PER_Q);
2821         qeth_initialize_working_pool_list(card);
2822         /*give only as many buffers to hardware as we have buffer pool entries*/
2823         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2824                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2825         card->qdio.in_q->next_buf_to_init =
2826                 card->qdio.in_buf_pool.buf_count - 1;
2827         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2828                      card->qdio.in_buf_pool.buf_count - 1);
2829         if (rc) {
2830                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2831                 return rc;
2832         }
2833
2834         /* completion */
2835         rc = qeth_cq_init(card);
2836         if (rc) {
2837                 return rc;
2838         }
2839
2840         /* outbound queue */
2841         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2842                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2843                                    QDIO_MAX_BUFFERS_PER_Q);
2844                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2845                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2846                                         card->qdio.out_qs[i]->bufs[j],
2847                                         QETH_QDIO_BUF_EMPTY);
2848                 }
2849                 card->qdio.out_qs[i]->card = card;
2850                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2851                 card->qdio.out_qs[i]->do_pack = 0;
2852                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2853                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2854                 atomic_set(&card->qdio.out_qs[i]->state,
2855                            QETH_OUT_Q_UNLOCKED);
2856         }
2857         return 0;
2858 }
2859 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2860
2861 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2862 {
2863         switch (link_type) {
2864         case QETH_LINK_TYPE_HSTR:
2865                 return 2;
2866         default:
2867                 return 1;
2868         }
2869 }
2870
2871 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2872                 struct qeth_ipa_cmd *cmd, __u8 command,
2873                 enum qeth_prot_versions prot)
2874 {
2875         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2876         cmd->hdr.command = command;
2877         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2878         cmd->hdr.seqno = card->seqno.ipa;
2879         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2880         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2881         if (card->options.layer2)
2882                 cmd->hdr.prim_version_no = 2;
2883         else
2884                 cmd->hdr.prim_version_no = 1;
2885         cmd->hdr.param_count = 1;
2886         cmd->hdr.prot_version = prot;
2887         cmd->hdr.ipa_supported = 0;
2888         cmd->hdr.ipa_enabled = 0;
2889 }
2890
2891 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2892                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2893 {
2894         struct qeth_cmd_buffer *iob;
2895         struct qeth_ipa_cmd *cmd;
2896
2897         iob = qeth_get_buffer(&card->write);
2898         if (iob) {
2899                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2900                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2901         } else {
2902                 dev_warn(&card->gdev->dev,
2903                          "The qeth driver ran out of channel command buffers\n");
2904                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2905                                  dev_name(&card->gdev->dev));
2906         }
2907
2908         return iob;
2909 }
2910 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2911
2912 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2913                 char prot_type)
2914 {
2915         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2916         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2917         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2918                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2919 }
2920 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2921
2922 /**
2923  * qeth_send_ipa_cmd() - send an IPA command
2924  *
2925  * See qeth_send_control_data() for explanation of the arguments.
2926  */
2927
2928 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2929                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2930                         unsigned long),
2931                 void *reply_param)
2932 {
2933         int rc;
2934         char prot_type;
2935
2936         QETH_CARD_TEXT(card, 4, "sendipa");
2937
2938         if (card->options.layer2)
2939                 if (card->info.type == QETH_CARD_TYPE_OSN)
2940                         prot_type = QETH_PROT_OSN2;
2941                 else
2942                         prot_type = QETH_PROT_LAYER2;
2943         else
2944                 prot_type = QETH_PROT_TCPIP;
2945         qeth_prepare_ipa_cmd(card, iob, prot_type);
2946         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2947                                                 iob, reply_cb, reply_param);
2948         if (rc == -ETIME) {
2949                 qeth_clear_ipacmd_list(card);
2950                 qeth_schedule_recovery(card);
2951         }
2952         return rc;
2953 }
2954 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2955
2956 int qeth_send_startlan(struct qeth_card *card)
2957 {
2958         int rc;
2959         struct qeth_cmd_buffer *iob;
2960
2961         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2962
2963         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2964         if (!iob)
2965                 return -ENOMEM;
2966         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2967         return rc;
2968 }
2969 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2970
2971 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2972                 struct qeth_reply *reply, unsigned long data)
2973 {
2974         struct qeth_ipa_cmd *cmd;
2975
2976         QETH_CARD_TEXT(card, 4, "defadpcb");
2977
2978         cmd = (struct qeth_ipa_cmd *) data;
2979         if (cmd->hdr.return_code == 0)
2980                 cmd->hdr.return_code =
2981                         cmd->data.setadapterparms.hdr.return_code;
2982         return 0;
2983 }
2984
2985 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2986                 struct qeth_reply *reply, unsigned long data)
2987 {
2988         struct qeth_ipa_cmd *cmd;
2989
2990         QETH_CARD_TEXT(card, 3, "quyadpcb");
2991
2992         cmd = (struct qeth_ipa_cmd *) data;
2993         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2994                 card->info.link_type =
2995                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2996                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2997         }
2998         card->options.adp.supported_funcs =
2999                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3000         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3001 }
3002
3003 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3004                 __u32 command, __u32 cmdlen)
3005 {
3006         struct qeth_cmd_buffer *iob;
3007         struct qeth_ipa_cmd *cmd;
3008
3009         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3010                                      QETH_PROT_IPV4);
3011         if (iob) {
3012                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3013                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3014                 cmd->data.setadapterparms.hdr.command_code = command;
3015                 cmd->data.setadapterparms.hdr.used_total = 1;
3016                 cmd->data.setadapterparms.hdr.seq_no = 1;
3017         }
3018
3019         return iob;
3020 }
3021
3022 int qeth_query_setadapterparms(struct qeth_card *card)
3023 {
3024         int rc;
3025         struct qeth_cmd_buffer *iob;
3026
3027         QETH_CARD_TEXT(card, 3, "queryadp");
3028         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3029                                    sizeof(struct qeth_ipacmd_setadpparms));
3030         if (!iob)
3031                 return -ENOMEM;
3032         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3033         return rc;
3034 }
3035 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3036
3037 static int qeth_query_ipassists_cb(struct qeth_card *card,
3038                 struct qeth_reply *reply, unsigned long data)
3039 {
3040         struct qeth_ipa_cmd *cmd;
3041
3042         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3043
3044         cmd = (struct qeth_ipa_cmd *) data;
3045
3046         switch (cmd->hdr.return_code) {
3047         case IPA_RC_NOTSUPP:
3048         case IPA_RC_L2_UNSUPPORTED_CMD:
3049                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3050                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3051                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3052                 return -0;
3053         default:
3054                 if (cmd->hdr.return_code) {
3055                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3056                                                 "rc=%d\n",
3057                                                 dev_name(&card->gdev->dev),
3058                                                 cmd->hdr.return_code);
3059                         return 0;
3060                 }
3061         }
3062
3063         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3064                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3065                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3066         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3067                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3068                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3069         } else
3070                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3071                                         "\n", dev_name(&card->gdev->dev));
3072         return 0;
3073 }
3074
3075 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3076 {
3077         int rc;
3078         struct qeth_cmd_buffer *iob;
3079
3080         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3081         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3082         if (!iob)
3083                 return -ENOMEM;
3084         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3085         return rc;
3086 }
3087 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3088
3089 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3090                                 struct qeth_reply *reply, unsigned long data)
3091 {
3092         struct qeth_ipa_cmd *cmd;
3093         struct qeth_switch_info *sw_info;
3094         struct qeth_query_switch_attributes *attrs;
3095
3096         QETH_CARD_TEXT(card, 2, "qswiatcb");
3097         cmd = (struct qeth_ipa_cmd *) data;
3098         sw_info = (struct qeth_switch_info *)reply->param;
3099         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3100                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3101                 sw_info->capabilities = attrs->capabilities;
3102                 sw_info->settings = attrs->settings;
3103                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3104                                                         sw_info->settings);
3105         }
3106         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3107
3108         return 0;
3109 }
3110
3111 int qeth_query_switch_attributes(struct qeth_card *card,
3112                                  struct qeth_switch_info *sw_info)
3113 {
3114         struct qeth_cmd_buffer *iob;
3115
3116         QETH_CARD_TEXT(card, 2, "qswiattr");
3117         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3118                 return -EOPNOTSUPP;
3119         if (!netif_carrier_ok(card->dev))
3120                 return -ENOMEDIUM;
3121         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3122                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3123         if (!iob)
3124                 return -ENOMEM;
3125         return qeth_send_ipa_cmd(card, iob,
3126                                 qeth_query_switch_attributes_cb, sw_info);
3127 }
3128 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3129
3130 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3131                 struct qeth_reply *reply, unsigned long data)
3132 {
3133         struct qeth_ipa_cmd *cmd;
3134         __u16 rc;
3135
3136         cmd = (struct qeth_ipa_cmd *)data;
3137         rc = cmd->hdr.return_code;
3138         if (rc)
3139                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3140         else
3141                 card->info.diagass_support = cmd->data.diagass.ext;
3142         return 0;
3143 }
3144
3145 static int qeth_query_setdiagass(struct qeth_card *card)
3146 {
3147         struct qeth_cmd_buffer *iob;
3148         struct qeth_ipa_cmd    *cmd;
3149
3150         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3151         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3152         if (!iob)
3153                 return -ENOMEM;
3154         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3155         cmd->data.diagass.subcmd_len = 16;
3156         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3157         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3158 }
3159
3160 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3161 {
3162         unsigned long info = get_zeroed_page(GFP_KERNEL);
3163         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3164         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3165         struct ccw_dev_id ccwid;
3166         int level;
3167
3168         tid->chpid = card->info.chpid;
3169         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3170         tid->ssid = ccwid.ssid;
3171         tid->devno = ccwid.devno;
3172         if (!info)
3173                 return;
3174         level = stsi(NULL, 0, 0, 0);
3175         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3176                 tid->lparnr = info222->lpar_number;
3177         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3178                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3179                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3180         }
3181         free_page(info);
3182         return;
3183 }
3184
3185 static int qeth_hw_trap_cb(struct qeth_card *card,
3186                 struct qeth_reply *reply, unsigned long data)
3187 {
3188         struct qeth_ipa_cmd *cmd;
3189         __u16 rc;
3190
3191         cmd = (struct qeth_ipa_cmd *)data;
3192         rc = cmd->hdr.return_code;
3193         if (rc)
3194                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3195         return 0;
3196 }
3197
3198 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3199 {
3200         struct qeth_cmd_buffer *iob;
3201         struct qeth_ipa_cmd *cmd;
3202
3203         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3204         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3205         if (!iob)
3206                 return -ENOMEM;
3207         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3208         cmd->data.diagass.subcmd_len = 80;
3209         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3210         cmd->data.diagass.type = 1;
3211         cmd->data.diagass.action = action;
3212         switch (action) {
3213         case QETH_DIAGS_TRAP_ARM:
3214                 cmd->data.diagass.options = 0x0003;
3215                 cmd->data.diagass.ext = 0x00010000 +
3216                         sizeof(struct qeth_trap_id);
3217                 qeth_get_trap_id(card,
3218                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3219                 break;
3220         case QETH_DIAGS_TRAP_DISARM:
3221                 cmd->data.diagass.options = 0x0001;
3222                 break;
3223         case QETH_DIAGS_TRAP_CAPTURE:
3224                 break;
3225         }
3226         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3227 }
3228 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3229
3230 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3231                 unsigned int qdio_error, const char *dbftext)
3232 {
3233         if (qdio_error) {
3234                 QETH_CARD_TEXT(card, 2, dbftext);
3235                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3236                                buf->element[15].sflags);
3237                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3238                                buf->element[14].sflags);
3239                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3240                 if ((buf->element[15].sflags) == 0x12) {
3241                         card->stats.rx_dropped++;
3242                         return 0;
3243                 } else
3244                         return 1;
3245         }
3246         return 0;
3247 }
3248 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3249
3250 static void qeth_buffer_reclaim_work(struct work_struct *work)
3251 {
3252         struct qeth_card *card = container_of(work, struct qeth_card,
3253                 buffer_reclaim_work.work);
3254
3255         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3256         qeth_queue_input_buffer(card, card->reclaim_index);
3257 }
3258
3259 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3260 {
3261         struct qeth_qdio_q *queue = card->qdio.in_q;
3262         struct list_head *lh;
3263         int count;
3264         int i;
3265         int rc;
3266         int newcount = 0;
3267
3268         count = (index < queue->next_buf_to_init)?
3269                 card->qdio.in_buf_pool.buf_count -
3270                 (queue->next_buf_to_init - index) :
3271                 card->qdio.in_buf_pool.buf_count -
3272                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3273         /* only requeue at a certain threshold to avoid SIGAs */
3274         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3275                 for (i = queue->next_buf_to_init;
3276                      i < queue->next_buf_to_init + count; ++i) {
3277                         if (qeth_init_input_buffer(card,
3278                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3279                                 break;
3280                         } else {
3281                                 newcount++;
3282                         }
3283                 }
3284
3285                 if (newcount < count) {
3286                         /* we are in memory shortage so we switch back to
3287                            traditional skb allocation and drop packages */
3288                         atomic_set(&card->force_alloc_skb, 3);
3289                         count = newcount;
3290                 } else {
3291                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3292                 }
3293
3294                 if (!count) {
3295                         i = 0;
3296                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3297                                 i++;
3298                         if (i == card->qdio.in_buf_pool.buf_count) {
3299                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3300                                 card->reclaim_index = index;
3301                                 schedule_delayed_work(
3302                                         &card->buffer_reclaim_work,
3303                                         QETH_RECLAIM_WORK_TIME);
3304                         }
3305                         return;
3306                 }
3307
3308                 /*
3309                  * according to old code it should be avoided to requeue all
3310                  * 128 buffers in order to benefit from PCI avoidance.
3311                  * this function keeps at least one buffer (the buffer at
3312                  * 'index') un-requeued -> this buffer is the first buffer that
3313                  * will be requeued the next time
3314                  */
3315                 if (card->options.performance_stats) {
3316                         card->perf_stats.inbound_do_qdio_cnt++;
3317                         card->perf_stats.inbound_do_qdio_start_time =
3318                                 qeth_get_micros();
3319                 }
3320                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3321                              queue->next_buf_to_init, count);
3322                 if (card->options.performance_stats)
3323                         card->perf_stats.inbound_do_qdio_time +=
3324                                 qeth_get_micros() -
3325                                 card->perf_stats.inbound_do_qdio_start_time;
3326                 if (rc) {
3327                         QETH_CARD_TEXT(card, 2, "qinberr");
3328                 }
3329                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3330                                           QDIO_MAX_BUFFERS_PER_Q;
3331         }
3332 }
3333 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3334
3335 static int qeth_handle_send_error(struct qeth_card *card,
3336                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3337 {
3338         int sbalf15 = buffer->buffer->element[15].sflags;
3339
3340         QETH_CARD_TEXT(card, 6, "hdsnderr");
3341         if (card->info.type == QETH_CARD_TYPE_IQD) {
3342                 if (sbalf15 == 0) {
3343                         qdio_err = 0;
3344                 } else {
3345                         qdio_err = 1;
3346                 }
3347         }
3348         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3349
3350         if (!qdio_err)
3351                 return QETH_SEND_ERROR_NONE;
3352
3353         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3354                 return QETH_SEND_ERROR_RETRY;
3355
3356         QETH_CARD_TEXT(card, 1, "lnkfail");
3357         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3358                        (u16)qdio_err, (u8)sbalf15);
3359         return QETH_SEND_ERROR_LINK_FAILURE;
3360 }
3361
3362 /*
3363  * Switched to packing state if the number of used buffers on a queue
3364  * reaches a certain limit.
3365  */
3366 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3367 {
3368         if (!queue->do_pack) {
3369                 if (atomic_read(&queue->used_buffers)
3370                     >= QETH_HIGH_WATERMARK_PACK){
3371                         /* switch non-PACKING -> PACKING */
3372                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3373                         if (queue->card->options.performance_stats)
3374                                 queue->card->perf_stats.sc_dp_p++;
3375                         queue->do_pack = 1;
3376                 }
3377         }
3378 }
3379
3380 /*
3381  * Switches from packing to non-packing mode. If there is a packing
3382  * buffer on the queue this buffer will be prepared to be flushed.
3383  * In that case 1 is returned to inform the caller. If no buffer
3384  * has to be flushed, zero is returned.
3385  */
3386 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3387 {
3388         struct qeth_qdio_out_buffer *buffer;
3389         int flush_count = 0;
3390
3391         if (queue->do_pack) {
3392                 if (atomic_read(&queue->used_buffers)
3393                     <= QETH_LOW_WATERMARK_PACK) {
3394                         /* switch PACKING -> non-PACKING */
3395                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3396                         if (queue->card->options.performance_stats)
3397                                 queue->card->perf_stats.sc_p_dp++;
3398                         queue->do_pack = 0;
3399                         /* flush packing buffers */
3400                         buffer = queue->bufs[queue->next_buf_to_fill];
3401                         if ((atomic_read(&buffer->state) ==
3402                                                 QETH_QDIO_BUF_EMPTY) &&
3403                             (buffer->next_element_to_fill > 0)) {
3404                                 atomic_set(&buffer->state,
3405                                            QETH_QDIO_BUF_PRIMED);
3406                                 flush_count++;
3407                                 queue->next_buf_to_fill =
3408                                         (queue->next_buf_to_fill + 1) %
3409                                         QDIO_MAX_BUFFERS_PER_Q;
3410                         }
3411                 }
3412         }
3413         return flush_count;
3414 }
3415
3416
3417 /*
3418  * Called to flush a packing buffer if no more pci flags are on the queue.
3419  * Checks if there is a packing buffer and prepares it to be flushed.
3420  * In that case returns 1, otherwise zero.
3421  */
3422 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3423 {
3424         struct qeth_qdio_out_buffer *buffer;
3425
3426         buffer = queue->bufs[queue->next_buf_to_fill];
3427         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3428            (buffer->next_element_to_fill > 0)) {
3429                 /* it's a packing buffer */
3430                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3431                 queue->next_buf_to_fill =
3432                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3433                 return 1;
3434         }
3435         return 0;
3436 }
3437
3438 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3439                                int count)
3440 {
3441         struct qeth_qdio_out_buffer *buf;
3442         int rc;
3443         int i;
3444         unsigned int qdio_flags;
3445
3446         for (i = index; i < index + count; ++i) {
3447                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3448                 buf = queue->bufs[bidx];
3449                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3450                                 SBAL_EFLAGS_LAST_ENTRY;
3451
3452                 if (queue->bufstates)
3453                         queue->bufstates[bidx].user = buf;
3454
3455                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3456                         continue;
3457
3458                 if (!queue->do_pack) {
3459                         if ((atomic_read(&queue->used_buffers) >=
3460                                 (QETH_HIGH_WATERMARK_PACK -
3461                                  QETH_WATERMARK_PACK_FUZZ)) &&
3462                             !atomic_read(&queue->set_pci_flags_count)) {
3463                                 /* it's likely that we'll go to packing
3464                                  * mode soon */
3465                                 atomic_inc(&queue->set_pci_flags_count);
3466                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3467                         }
3468                 } else {
3469                         if (!atomic_read(&queue->set_pci_flags_count)) {
3470                                 /*
3471                                  * there's no outstanding PCI any more, so we
3472                                  * have to request a PCI to be sure the the PCI
3473                                  * will wake at some time in the future then we
3474                                  * can flush packed buffers that might still be
3475                                  * hanging around, which can happen if no
3476                                  * further send was requested by the stack
3477                                  */
3478                                 atomic_inc(&queue->set_pci_flags_count);
3479                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3480                         }
3481                 }
3482         }
3483
3484         queue->card->dev->trans_start = jiffies;
3485         if (queue->card->options.performance_stats) {
3486                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3487                 queue->card->perf_stats.outbound_do_qdio_start_time =
3488                         qeth_get_micros();
3489         }
3490         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3491         if (atomic_read(&queue->set_pci_flags_count))
3492                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3493         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3494                      queue->queue_no, index, count);
3495         if (queue->card->options.performance_stats)
3496                 queue->card->perf_stats.outbound_do_qdio_time +=
3497                         qeth_get_micros() -
3498                         queue->card->perf_stats.outbound_do_qdio_start_time;
3499         atomic_add(count, &queue->used_buffers);
3500         if (rc) {
3501                 queue->card->stats.tx_errors += count;
3502                 /* ignore temporary SIGA errors without busy condition */
3503                 if (rc == -ENOBUFS)
3504                         return;
3505                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3506                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3507                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3508                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3509                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3510
3511                 /* this must not happen under normal circumstances. if it
3512                  * happens something is really wrong -> recover */
3513                 qeth_schedule_recovery(queue->card);
3514                 return;
3515         }
3516         if (queue->card->options.performance_stats)
3517                 queue->card->perf_stats.bufs_sent += count;
3518 }
3519
3520 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3521 {
3522         int index;
3523         int flush_cnt = 0;
3524         int q_was_packing = 0;
3525
3526         /*
3527          * check if weed have to switch to non-packing mode or if
3528          * we have to get a pci flag out on the queue
3529          */
3530         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3531             !atomic_read(&queue->set_pci_flags_count)) {
3532                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3533                                 QETH_OUT_Q_UNLOCKED) {
3534                         /*
3535                          * If we get in here, there was no action in
3536                          * do_send_packet. So, we check if there is a
3537                          * packing buffer to be flushed here.
3538                          */
3539                         netif_stop_queue(queue->card->dev);
3540                         index = queue->next_buf_to_fill;
3541                         q_was_packing = queue->do_pack;
3542                         /* queue->do_pack may change */
3543                         barrier();
3544                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3545                         if (!flush_cnt &&
3546                             !atomic_read(&queue->set_pci_flags_count))
3547                                 flush_cnt +=
3548                                         qeth_flush_buffers_on_no_pci(queue);
3549                         if (queue->card->options.performance_stats &&
3550                             q_was_packing)
3551                                 queue->card->perf_stats.bufs_sent_pack +=
3552                                         flush_cnt;
3553                         if (flush_cnt)
3554                                 qeth_flush_buffers(queue, index, flush_cnt);
3555                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3556                 }
3557         }
3558 }
3559
3560 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3561                 unsigned long card_ptr)
3562 {
3563         struct qeth_card *card = (struct qeth_card *)card_ptr;
3564
3565         if (card->dev && (card->dev->flags & IFF_UP))
3566                 napi_schedule(&card->napi);
3567 }
3568 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3569
3570 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3571 {
3572         int rc;
3573
3574         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3575                 rc = -1;
3576                 goto out;
3577         } else {
3578                 if (card->options.cq == cq) {
3579                         rc = 0;
3580                         goto out;
3581                 }
3582
3583                 if (card->state != CARD_STATE_DOWN &&
3584                     card->state != CARD_STATE_RECOVER) {
3585                         rc = -1;
3586                         goto out;
3587                 }
3588
3589                 qeth_free_qdio_buffers(card);
3590                 card->options.cq = cq;
3591                 rc = 0;
3592         }
3593 out:
3594         return rc;
3595
3596 }
3597 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3598
3599
3600 static void qeth_qdio_cq_handler(struct qeth_card *card,
3601                 unsigned int qdio_err,
3602                 unsigned int queue, int first_element, int count) {
3603         struct qeth_qdio_q *cq = card->qdio.c_q;
3604         int i;
3605         int rc;
3606
3607         if (!qeth_is_cq(card, queue))
3608                 goto out;
3609
3610         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3611         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3612         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3613
3614         if (qdio_err) {
3615                 netif_stop_queue(card->dev);
3616                 qeth_schedule_recovery(card);
3617                 goto out;
3618         }
3619
3620         if (card->options.performance_stats) {
3621                 card->perf_stats.cq_cnt++;
3622                 card->perf_stats.cq_start_time = qeth_get_micros();
3623         }
3624
3625         for (i = first_element; i < first_element + count; ++i) {
3626                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3627                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3628                 int e;
3629
3630                 e = 0;
3631                 while (buffer->element[e].addr) {
3632                         unsigned long phys_aob_addr;
3633
3634                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3635                         qeth_qdio_handle_aob(card, phys_aob_addr);
3636                         buffer->element[e].addr = NULL;
3637                         buffer->element[e].eflags = 0;
3638                         buffer->element[e].sflags = 0;
3639                         buffer->element[e].length = 0;
3640
3641                         ++e;
3642                 }
3643
3644                 buffer->element[15].eflags = 0;
3645                 buffer->element[15].sflags = 0;
3646         }
3647         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3648                     card->qdio.c_q->next_buf_to_init,
3649                     count);
3650         if (rc) {
3651                 dev_warn(&card->gdev->dev,
3652                         "QDIO reported an error, rc=%i\n", rc);
3653                 QETH_CARD_TEXT(card, 2, "qcqherr");
3654         }
3655         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3656                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3657
3658         netif_wake_queue(card->dev);
3659
3660         if (card->options.performance_stats) {
3661                 int delta_t = qeth_get_micros();
3662                 delta_t -= card->perf_stats.cq_start_time;
3663                 card->perf_stats.cq_time += delta_t;
3664         }
3665 out:
3666         return;
3667 }
3668
3669 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3670                 unsigned int queue, int first_elem, int count,
3671                 unsigned long card_ptr)
3672 {
3673         struct qeth_card *card = (struct qeth_card *)card_ptr;
3674
3675         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3676         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3677
3678         if (qeth_is_cq(card, queue))
3679                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3680         else if (qdio_err)
3681                 qeth_schedule_recovery(card);
3682
3683
3684 }
3685 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3686
3687 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3688                 unsigned int qdio_error, int __queue, int first_element,
3689                 int count, unsigned long card_ptr)
3690 {
3691         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3692         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3693         struct qeth_qdio_out_buffer *buffer;
3694         int i;
3695
3696         QETH_CARD_TEXT(card, 6, "qdouhdl");
3697         if (qdio_error & QDIO_ERROR_FATAL) {
3698                 QETH_CARD_TEXT(card, 2, "achkcond");
3699                 netif_stop_queue(card->dev);
3700                 qeth_schedule_recovery(card);
3701                 return;
3702         }
3703         if (card->options.performance_stats) {
3704                 card->perf_stats.outbound_handler_cnt++;
3705                 card->perf_stats.outbound_handler_start_time =
3706                         qeth_get_micros();
3707         }
3708         for (i = first_element; i < (first_element + count); ++i) {
3709                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3710                 buffer = queue->bufs[bidx];
3711                 qeth_handle_send_error(card, buffer, qdio_error);
3712
3713                 if (queue->bufstates &&
3714                     (queue->bufstates[bidx].flags &
3715                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3716                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3717
3718                         if (atomic_cmpxchg(&buffer->state,
3719                                            QETH_QDIO_BUF_PRIMED,
3720                                            QETH_QDIO_BUF_PENDING) ==
3721                                 QETH_QDIO_BUF_PRIMED) {
3722                                 qeth_notify_skbs(queue, buffer,
3723                                                  TX_NOTIFY_PENDING);
3724                         }
3725                         buffer->aob = queue->bufstates[bidx].aob;
3726                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3727                         QETH_CARD_TEXT(queue->card, 5, "aob");
3728                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3729                                         virt_to_phys(buffer->aob));
3730                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3731                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3732                                 qeth_schedule_recovery(card);
3733                         }
3734                 } else {
3735                         if (card->options.cq == QETH_CQ_ENABLED) {
3736                                 enum iucv_tx_notify n;
3737
3738                                 n = qeth_compute_cq_notification(
3739                                         buffer->buffer->element[15].sflags, 0);
3740                                 qeth_notify_skbs(queue, buffer, n);
3741                         }
3742
3743                         qeth_clear_output_buffer(queue, buffer,
3744                                                 QETH_QDIO_BUF_EMPTY);
3745                 }
3746                 qeth_cleanup_handled_pending(queue, bidx, 0);
3747         }
3748         atomic_sub(count, &queue->used_buffers);
3749         /* check if we need to do something on this outbound queue */
3750         if (card->info.type != QETH_CARD_TYPE_IQD)
3751                 qeth_check_outbound_queue(queue);
3752
3753         netif_wake_queue(queue->card->dev);
3754         if (card->options.performance_stats)
3755                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3756                         card->perf_stats.outbound_handler_start_time;
3757 }
3758 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3759
3760 /**
3761  * Note: Function assumes that we have 4 outbound queues.
3762  */
3763 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3764                         int ipv, int cast_type)
3765 {
3766         __be16 *tci;
3767         u8 tos;
3768
3769         if (cast_type && card->info.is_multicast_different)
3770                 return card->info.is_multicast_different &
3771                         (card->qdio.no_out_queues - 1);
3772
3773         switch (card->qdio.do_prio_queueing) {
3774         case QETH_PRIO_Q_ING_TOS:
3775         case QETH_PRIO_Q_ING_PREC:
3776                 switch (ipv) {
3777                 case 4:
3778                         tos = ipv4_get_dsfield(ip_hdr(skb));
3779                         break;
3780                 case 6:
3781                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3782                         break;
3783                 default:
3784                         return card->qdio.default_out_queue;
3785                 }
3786                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3787                         return ~tos >> 6 & 3;
3788                 if (tos & IPTOS_MINCOST)
3789                         return 3;
3790                 if (tos & IPTOS_RELIABILITY)
3791                         return 2;
3792                 if (tos & IPTOS_THROUGHPUT)
3793                         return 1;
3794                 if (tos & IPTOS_LOWDELAY)
3795                         return 0;
3796                 break;
3797         case QETH_PRIO_Q_ING_SKB:
3798                 if (skb->priority > 5)
3799                         return 0;
3800                 return ~skb->priority >> 1 & 3;
3801         case QETH_PRIO_Q_ING_VLAN:
3802                 tci = &((struct ethhdr *)skb->data)->h_proto;
3803                 if (*tci == ETH_P_8021Q)
3804                         return ~*(tci + 1) >> (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 int qeth_get_elements_for_frags(struct sk_buff *skb)
3814 {
3815         int cnt, length, e, elements = 0;
3816         struct skb_frag_struct *frag;
3817         char *data;
3818
3819         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3820                 frag = &skb_shinfo(skb)->frags[cnt];
3821                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3822                         frag->page_offset;
3823                 length = frag->size;
3824                 e = PFN_UP((unsigned long)data + length - 1) -
3825                         PFN_DOWN((unsigned long)data);
3826                 elements += e;
3827         }
3828         return elements;
3829 }
3830 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3831
3832 int qeth_get_elements_no(struct qeth_card *card,
3833                      struct sk_buff *skb, int elems)
3834 {
3835         int dlen = skb->len - skb->data_len;
3836         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3837                 PFN_DOWN((unsigned long)skb->data);
3838
3839         elements_needed += qeth_get_elements_for_frags(skb);
3840
3841         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3842                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3843                         "(Number=%d / Length=%d). Discarded.\n",
3844                         (elements_needed+elems), skb->len);
3845                 return 0;
3846         }
3847         return elements_needed;
3848 }
3849 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3850
3851 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3852 {
3853         int hroom, inpage, rest;
3854
3855         if (((unsigned long)skb->data & PAGE_MASK) !=
3856             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3857                 hroom = skb_headroom(skb);
3858                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3859                 rest = len - inpage;
3860                 if (rest > hroom)
3861                         return 1;
3862                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3863                 skb->data -= rest;
3864                 skb->tail -= rest;
3865                 *hdr = (struct qeth_hdr *)skb->data;
3866                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3867         }
3868         return 0;
3869 }
3870 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3871
3872 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3873         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3874         int offset)
3875 {
3876         int length = skb->len - skb->data_len;
3877         int length_here;
3878         int element;
3879         char *data;
3880         int first_lap, cnt;
3881         struct skb_frag_struct *frag;
3882
3883         element = *next_element_to_fill;
3884         data = skb->data;
3885         first_lap = (is_tso == 0 ? 1 : 0);
3886
3887         if (offset >= 0) {
3888                 data = skb->data + offset;
3889                 length -= offset;
3890                 first_lap = 0;
3891         }
3892
3893         while (length > 0) {
3894                 /* length_here is the remaining amount of data in this page */
3895                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3896                 if (length < length_here)
3897                         length_here = length;
3898
3899                 buffer->element[element].addr = data;
3900                 buffer->element[element].length = length_here;
3901                 length -= length_here;
3902                 if (!length) {
3903                         if (first_lap)
3904                                 if (skb_shinfo(skb)->nr_frags)
3905                                         buffer->element[element].eflags =
3906                                                 SBAL_EFLAGS_FIRST_FRAG;
3907                                 else
3908                                         buffer->element[element].eflags = 0;
3909                         else
3910                                 buffer->element[element].eflags =
3911                                     SBAL_EFLAGS_MIDDLE_FRAG;
3912                 } else {
3913                         if (first_lap)
3914                                 buffer->element[element].eflags =
3915                                     SBAL_EFLAGS_FIRST_FRAG;
3916                         else
3917                                 buffer->element[element].eflags =
3918                                     SBAL_EFLAGS_MIDDLE_FRAG;
3919                 }
3920                 data += length_here;
3921                 element++;
3922                 first_lap = 0;
3923         }
3924
3925         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3926                 frag = &skb_shinfo(skb)->frags[cnt];
3927                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3928                         frag->page_offset;
3929                 length = frag->size;
3930                 while (length > 0) {
3931                         length_here = PAGE_SIZE -
3932                                 ((unsigned long) data % PAGE_SIZE);
3933                         if (length < length_here)
3934                                 length_here = length;
3935
3936                         buffer->element[element].addr = data;
3937                         buffer->element[element].length = length_here;
3938                         buffer->element[element].eflags =
3939                                 SBAL_EFLAGS_MIDDLE_FRAG;
3940                         length -= length_here;
3941                         data += length_here;
3942                         element++;
3943                 }
3944         }
3945
3946         if (buffer->element[element - 1].eflags)
3947                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3948         *next_element_to_fill = element;
3949 }
3950
3951 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3952                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3953                 struct qeth_hdr *hdr, int offset, int hd_len)
3954 {
3955         struct qdio_buffer *buffer;
3956         int flush_cnt = 0, hdr_len, large_send = 0;
3957
3958         buffer = buf->buffer;
3959         atomic_inc(&skb->users);
3960         skb_queue_tail(&buf->skb_list, skb);
3961
3962         /*check first on TSO ....*/
3963         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3964                 int element = buf->next_element_to_fill;
3965
3966                 hdr_len = sizeof(struct qeth_hdr_tso) +
3967                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3968                 /*fill first buffer entry only with header information */
3969                 buffer->element[element].addr = skb->data;
3970                 buffer->element[element].length = hdr_len;
3971                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3972                 buf->next_element_to_fill++;
3973                 skb->data += hdr_len;
3974                 skb->len  -= hdr_len;
3975                 large_send = 1;
3976         }
3977
3978         if (offset >= 0) {
3979                 int element = buf->next_element_to_fill;
3980                 buffer->element[element].addr = hdr;
3981                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3982                                                         hd_len;
3983                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3984                 buf->is_header[element] = 1;
3985                 buf->next_element_to_fill++;
3986         }
3987
3988         __qeth_fill_buffer(skb, buffer, large_send,
3989                 (int *)&buf->next_element_to_fill, offset);
3990
3991         if (!queue->do_pack) {
3992                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3993                 /* set state to PRIMED -> will be flushed */
3994                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3995                 flush_cnt = 1;
3996         } else {
3997                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3998                 if (queue->card->options.performance_stats)
3999                         queue->card->perf_stats.skbs_sent_pack++;
4000                 if (buf->next_element_to_fill >=
4001                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4002                         /*
4003                          * packed buffer if full -> set state PRIMED
4004                          * -> will be flushed
4005                          */
4006                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4007                         flush_cnt = 1;
4008                 }
4009         }
4010         return flush_cnt;
4011 }
4012
4013 int qeth_do_send_packet_fast(struct qeth_card *card,
4014                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4015                 struct qeth_hdr *hdr, int elements_needed,
4016                 int offset, int hd_len)
4017 {
4018         struct qeth_qdio_out_buffer *buffer;
4019         int index;
4020
4021         /* spin until we get the queue ... */
4022         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4023                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4024         /* ... now we've got the queue */
4025         index = queue->next_buf_to_fill;
4026         buffer = queue->bufs[queue->next_buf_to_fill];
4027         /*
4028          * check if buffer is empty to make sure that we do not 'overtake'
4029          * ourselves and try to fill a buffer that is already primed
4030          */
4031         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4032                 goto out;
4033         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4034                                           QDIO_MAX_BUFFERS_PER_Q;
4035         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4036         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4037         qeth_flush_buffers(queue, index, 1);
4038         return 0;
4039 out:
4040         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4041         return -EBUSY;
4042 }
4043 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4044
4045 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4046                 struct sk_buff *skb, struct qeth_hdr *hdr,
4047                 int elements_needed)
4048 {
4049         struct qeth_qdio_out_buffer *buffer;
4050         int start_index;
4051         int flush_count = 0;
4052         int do_pack = 0;
4053         int tmp;
4054         int rc = 0;
4055
4056         /* spin until we get the queue ... */
4057         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4058                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4059         start_index = queue->next_buf_to_fill;
4060         buffer = queue->bufs[queue->next_buf_to_fill];
4061         /*
4062          * check if buffer is empty to make sure that we do not 'overtake'
4063          * ourselves and try to fill a buffer that is already primed
4064          */
4065         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4066                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4067                 return -EBUSY;
4068         }
4069         /* check if we need to switch packing state of this queue */
4070         qeth_switch_to_packing_if_needed(queue);
4071         if (queue->do_pack) {
4072                 do_pack = 1;
4073                 /* does packet fit in current buffer? */
4074                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4075                     buffer->next_element_to_fill) < elements_needed) {
4076                         /* ... no -> set state PRIMED */
4077                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4078                         flush_count++;
4079                         queue->next_buf_to_fill =
4080                                 (queue->next_buf_to_fill + 1) %
4081                                 QDIO_MAX_BUFFERS_PER_Q;
4082                         buffer = queue->bufs[queue->next_buf_to_fill];
4083                         /* we did a step forward, so check buffer state
4084                          * again */
4085                         if (atomic_read(&buffer->state) !=
4086                             QETH_QDIO_BUF_EMPTY) {
4087                                 qeth_flush_buffers(queue, start_index,
4088                                                            flush_count);
4089                                 atomic_set(&queue->state,
4090                                                 QETH_OUT_Q_UNLOCKED);
4091                                 return -EBUSY;
4092                         }
4093                 }
4094         }
4095         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4096         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4097                                   QDIO_MAX_BUFFERS_PER_Q;
4098         flush_count += tmp;
4099         if (flush_count)
4100                 qeth_flush_buffers(queue, start_index, flush_count);
4101         else if (!atomic_read(&queue->set_pci_flags_count))
4102                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4103         /*
4104          * queue->state will go from LOCKED -> UNLOCKED or from
4105          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4106          * (switch packing state or flush buffer to get another pci flag out).
4107          * In that case we will enter this loop
4108          */
4109         while (atomic_dec_return(&queue->state)) {
4110                 flush_count = 0;
4111                 start_index = queue->next_buf_to_fill;
4112                 /* check if we can go back to non-packing state */
4113                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4114                 /*
4115                  * check if we need to flush a packing buffer to get a pci
4116                  * flag out on the queue
4117                  */
4118                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4119                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4120                 if (flush_count)
4121                         qeth_flush_buffers(queue, start_index, flush_count);
4122         }
4123         /* at this point the queue is UNLOCKED again */
4124         if (queue->card->options.performance_stats && do_pack)
4125                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4126
4127         return rc;
4128 }
4129 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4130
4131 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4132                 struct qeth_reply *reply, unsigned long data)
4133 {
4134         struct qeth_ipa_cmd *cmd;
4135         struct qeth_ipacmd_setadpparms *setparms;
4136
4137         QETH_CARD_TEXT(card, 4, "prmadpcb");
4138
4139         cmd = (struct qeth_ipa_cmd *) data;
4140         setparms = &(cmd->data.setadapterparms);
4141
4142         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4143         if (cmd->hdr.return_code) {
4144                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4145                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4146         }
4147         card->info.promisc_mode = setparms->data.mode;
4148         return 0;
4149 }
4150
4151 void qeth_setadp_promisc_mode(struct qeth_card *card)
4152 {
4153         enum qeth_ipa_promisc_modes mode;
4154         struct net_device *dev = card->dev;
4155         struct qeth_cmd_buffer *iob;
4156         struct qeth_ipa_cmd *cmd;
4157
4158         QETH_CARD_TEXT(card, 4, "setprom");
4159
4160         if (((dev->flags & IFF_PROMISC) &&
4161              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4162             (!(dev->flags & IFF_PROMISC) &&
4163              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4164                 return;
4165         mode = SET_PROMISC_MODE_OFF;
4166         if (dev->flags & IFF_PROMISC)
4167                 mode = SET_PROMISC_MODE_ON;
4168         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4169
4170         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4171                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4172         if (!iob)
4173                 return;
4174         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4175         cmd->data.setadapterparms.data.mode = mode;
4176         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4177 }
4178 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4179
4180 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4181 {
4182         struct qeth_card *card;
4183         char dbf_text[15];
4184
4185         card = dev->ml_priv;
4186
4187         QETH_CARD_TEXT(card, 4, "chgmtu");
4188         sprintf(dbf_text, "%8x", new_mtu);
4189         QETH_CARD_TEXT(card, 4, dbf_text);
4190
4191         if (new_mtu < 64)
4192                 return -EINVAL;
4193         if (new_mtu > 65535)
4194                 return -EINVAL;
4195         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4196             (!qeth_mtu_is_valid(card, new_mtu)))
4197                 return -EINVAL;
4198         dev->mtu = new_mtu;
4199         return 0;
4200 }
4201 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4202
4203 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4204 {
4205         struct qeth_card *card;
4206
4207         card = dev->ml_priv;
4208
4209         QETH_CARD_TEXT(card, 5, "getstat");
4210
4211         return &card->stats;
4212 }
4213 EXPORT_SYMBOL_GPL(qeth_get_stats);
4214
4215 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4216                 struct qeth_reply *reply, unsigned long data)
4217 {
4218         struct qeth_ipa_cmd *cmd;
4219
4220         QETH_CARD_TEXT(card, 4, "chgmaccb");
4221
4222         cmd = (struct qeth_ipa_cmd *) data;
4223         if (!card->options.layer2 ||
4224             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4225                 memcpy(card->dev->dev_addr,
4226                        &cmd->data.setadapterparms.data.change_addr.addr,
4227                        OSA_ADDR_LEN);
4228                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4229         }
4230         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4231         return 0;
4232 }
4233
4234 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4235 {
4236         int rc;
4237         struct qeth_cmd_buffer *iob;
4238         struct qeth_ipa_cmd *cmd;
4239
4240         QETH_CARD_TEXT(card, 4, "chgmac");
4241
4242         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4243                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4244                                    sizeof(struct qeth_change_addr));
4245         if (!iob)
4246                 return -ENOMEM;
4247         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4248         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4249         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4250         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4251                card->dev->dev_addr, OSA_ADDR_LEN);
4252         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4253                                NULL);
4254         return rc;
4255 }
4256 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4257
4258 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4259                 struct qeth_reply *reply, unsigned long data)
4260 {
4261         struct qeth_ipa_cmd *cmd;
4262         struct qeth_set_access_ctrl *access_ctrl_req;
4263         int fallback = *(int *)reply->param;
4264
4265         QETH_CARD_TEXT(card, 4, "setaccb");
4266
4267         cmd = (struct qeth_ipa_cmd *) data;
4268         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4269         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4270         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4271         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4272                 cmd->data.setadapterparms.hdr.return_code);
4273         if (cmd->data.setadapterparms.hdr.return_code !=
4274                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4275                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4276                                 card->gdev->dev.kobj.name,
4277                                 access_ctrl_req->subcmd_code,
4278                                 cmd->data.setadapterparms.hdr.return_code);
4279         switch (cmd->data.setadapterparms.hdr.return_code) {
4280         case SET_ACCESS_CTRL_RC_SUCCESS:
4281                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4282                         dev_info(&card->gdev->dev,
4283                             "QDIO data connection isolation is deactivated\n");
4284                 } else {
4285                         dev_info(&card->gdev->dev,
4286                             "QDIO data connection isolation is activated\n");
4287                 }
4288                 break;
4289         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4290                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4291                                 "deactivated\n", dev_name(&card->gdev->dev));
4292                 if (fallback)
4293                         card->options.isolation = card->options.prev_isolation;
4294                 break;
4295         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4296                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4297                                 " activated\n", dev_name(&card->gdev->dev));
4298                 if (fallback)
4299                         card->options.isolation = card->options.prev_isolation;
4300                 break;
4301         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4302                 dev_err(&card->gdev->dev, "Adapter does not "
4303                         "support QDIO data connection isolation\n");
4304                 break;
4305         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4306                 dev_err(&card->gdev->dev,
4307                         "Adapter is dedicated. "
4308                         "QDIO data connection isolation not supported\n");
4309                 if (fallback)
4310                         card->options.isolation = card->options.prev_isolation;
4311                 break;
4312         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4313                 dev_err(&card->gdev->dev,
4314                         "TSO does not permit QDIO data connection isolation\n");
4315                 if (fallback)
4316                         card->options.isolation = card->options.prev_isolation;
4317                 break;
4318         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4319                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4320                         "support reflective relay mode\n");
4321                 if (fallback)
4322                         card->options.isolation = card->options.prev_isolation;
4323                 break;
4324         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4325                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4326                                         "enabled at the adjacent switch port");
4327                 if (fallback)
4328                         card->options.isolation = card->options.prev_isolation;
4329                 break;
4330         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4331                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4332                                         "at the adjacent switch failed\n");
4333                 break;
4334         default:
4335                 /* this should never happen */
4336                 if (fallback)
4337                         card->options.isolation = card->options.prev_isolation;
4338                 break;
4339         }
4340         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4341         return 0;
4342 }
4343
4344 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4345                 enum qeth_ipa_isolation_modes isolation, int fallback)
4346 {
4347         int rc;
4348         struct qeth_cmd_buffer *iob;
4349         struct qeth_ipa_cmd *cmd;
4350         struct qeth_set_access_ctrl *access_ctrl_req;
4351
4352         QETH_CARD_TEXT(card, 4, "setacctl");
4353
4354         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4355         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4356
4357         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4358                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4359                                    sizeof(struct qeth_set_access_ctrl));
4360         if (!iob)
4361                 return -ENOMEM;
4362         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4363         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4364         access_ctrl_req->subcmd_code = isolation;
4365
4366         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4367                                &fallback);
4368         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4369         return rc;
4370 }
4371
4372 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4373 {
4374         int rc = 0;
4375
4376         QETH_CARD_TEXT(card, 4, "setactlo");
4377
4378         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4379              card->info.type == QETH_CARD_TYPE_OSX) &&
4380              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4381                 rc = qeth_setadpparms_set_access_ctrl(card,
4382                         card->options.isolation, fallback);
4383                 if (rc) {
4384                         QETH_DBF_MESSAGE(3,
4385                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4386                                 card->gdev->dev.kobj.name,
4387                                 rc);
4388                         rc = -EOPNOTSUPP;
4389                 }
4390         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4391                 card->options.isolation = ISOLATION_MODE_NONE;
4392
4393                 dev_err(&card->gdev->dev, "Adapter does not "
4394                         "support QDIO data connection isolation\n");
4395                 rc = -EOPNOTSUPP;
4396         }
4397         return rc;
4398 }
4399 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4400
4401 void qeth_tx_timeout(struct net_device *dev)
4402 {
4403         struct qeth_card *card;
4404
4405         card = dev->ml_priv;
4406         QETH_CARD_TEXT(card, 4, "txtimeo");
4407         card->stats.tx_errors++;
4408         qeth_schedule_recovery(card);
4409 }
4410 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4411
4412 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4413 {
4414         struct qeth_card *card = dev->ml_priv;
4415         int rc = 0;
4416
4417         switch (regnum) {
4418         case MII_BMCR: /* Basic mode control register */
4419                 rc = BMCR_FULLDPLX;
4420                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4421                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4422                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4423                         rc |= BMCR_SPEED100;
4424                 break;
4425         case MII_BMSR: /* Basic mode status register */
4426                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4427                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4428                      BMSR_100BASE4;
4429                 break;
4430         case MII_PHYSID1: /* PHYS ID 1 */
4431                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4432                      dev->dev_addr[2];
4433                 rc = (rc >> 5) & 0xFFFF;
4434                 break;
4435         case MII_PHYSID2: /* PHYS ID 2 */
4436                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4437                 break;
4438         case MII_ADVERTISE: /* Advertisement control reg */
4439                 rc = ADVERTISE_ALL;
4440                 break;
4441         case MII_LPA: /* Link partner ability reg */
4442                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4443                      LPA_100BASE4 | LPA_LPACK;
4444                 break;
4445         case MII_EXPANSION: /* Expansion register */
4446                 break;
4447         case MII_DCOUNTER: /* disconnect counter */
4448                 break;
4449         case MII_FCSCOUNTER: /* false carrier counter */
4450                 break;
4451         case MII_NWAYTEST: /* N-way auto-neg test register */
4452                 break;
4453         case MII_RERRCOUNTER: /* rx error counter */
4454                 rc = card->stats.rx_errors;
4455                 break;
4456         case MII_SREVISION: /* silicon revision */
4457                 break;
4458         case MII_RESV1: /* reserved 1 */
4459                 break;
4460         case MII_LBRERROR: /* loopback, rx, bypass error */
4461                 break;
4462         case MII_PHYADDR: /* physical address */
4463                 break;
4464         case MII_RESV2: /* reserved 2 */
4465                 break;
4466         case MII_TPISTATUS: /* TPI status for 10mbps */
4467                 break;
4468         case MII_NCONFIG: /* network interface config */
4469                 break;
4470         default:
4471                 break;
4472         }
4473         return rc;
4474 }
4475 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4476
4477 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4478                 struct qeth_cmd_buffer *iob, int len,
4479                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4480                         unsigned long),
4481                 void *reply_param)
4482 {
4483         u16 s1, s2;
4484
4485         QETH_CARD_TEXT(card, 4, "sendsnmp");
4486
4487         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4488         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4489                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4490         /* adjust PDU length fields in IPA_PDU_HEADER */
4491         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4492         s2 = (u32) len;
4493         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4494         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4495         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4496         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4497         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4498                                       reply_cb, reply_param);
4499 }
4500
4501 static int qeth_snmp_command_cb(struct qeth_card *card,
4502                 struct qeth_reply *reply, unsigned long sdata)
4503 {
4504         struct qeth_ipa_cmd *cmd;
4505         struct qeth_arp_query_info *qinfo;
4506         struct qeth_snmp_cmd *snmp;
4507         unsigned char *data;
4508         __u16 data_len;
4509
4510         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4511
4512         cmd = (struct qeth_ipa_cmd *) sdata;
4513         data = (unsigned char *)((char *)cmd - reply->offset);
4514         qinfo = (struct qeth_arp_query_info *) reply->param;
4515         snmp = &cmd->data.setadapterparms.data.snmp;
4516
4517         if (cmd->hdr.return_code) {
4518                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4519                 return 0;
4520         }
4521         if (cmd->data.setadapterparms.hdr.return_code) {
4522                 cmd->hdr.return_code =
4523                         cmd->data.setadapterparms.hdr.return_code;
4524                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4525                 return 0;
4526         }
4527         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4528         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4529                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4530         else
4531                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4532
4533         /* check if there is enough room in userspace */
4534         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4535                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4536                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4537                 return 0;
4538         }
4539         QETH_CARD_TEXT_(card, 4, "snore%i",
4540                        cmd->data.setadapterparms.hdr.used_total);
4541         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4542                 cmd->data.setadapterparms.hdr.seq_no);
4543         /*copy entries to user buffer*/
4544         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4545                 memcpy(qinfo->udata + qinfo->udata_offset,
4546                        (char *)snmp,
4547                        data_len + offsetof(struct qeth_snmp_cmd, data));
4548                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4549         } else {
4550                 memcpy(qinfo->udata + qinfo->udata_offset,
4551                        (char *)&snmp->request, data_len);
4552         }
4553         qinfo->udata_offset += data_len;
4554         /* check if all replies received ... */
4555                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4556                                cmd->data.setadapterparms.hdr.used_total);
4557                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4558                                cmd->data.setadapterparms.hdr.seq_no);
4559         if (cmd->data.setadapterparms.hdr.seq_no <
4560             cmd->data.setadapterparms.hdr.used_total)
4561                 return 1;
4562         return 0;
4563 }
4564
4565 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4566 {
4567         struct qeth_cmd_buffer *iob;
4568         struct qeth_ipa_cmd *cmd;
4569         struct qeth_snmp_ureq *ureq;
4570         unsigned int req_len;
4571         struct qeth_arp_query_info qinfo = {0, };
4572         int rc = 0;
4573
4574         QETH_CARD_TEXT(card, 3, "snmpcmd");
4575
4576         if (card->info.guestlan)
4577                 return -EOPNOTSUPP;
4578
4579         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4580             (!card->options.layer2)) {
4581                 return -EOPNOTSUPP;
4582         }
4583         /* skip 4 bytes (data_len struct member) to get req_len */
4584         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4585                 return -EFAULT;
4586         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4587                        sizeof(struct qeth_ipacmd_hdr) -
4588                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4589                 return -EINVAL;
4590         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4591         if (IS_ERR(ureq)) {
4592                 QETH_CARD_TEXT(card, 2, "snmpnome");
4593                 return PTR_ERR(ureq);
4594         }
4595         qinfo.udata_len = ureq->hdr.data_len;
4596         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4597         if (!qinfo.udata) {
4598                 kfree(ureq);
4599                 return -ENOMEM;
4600         }
4601         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4602
4603         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4604                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4605         if (!iob) {
4606                 rc = -ENOMEM;
4607                 goto out;
4608         }
4609         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4610         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4611         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4612                                     qeth_snmp_command_cb, (void *)&qinfo);
4613         if (rc)
4614                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4615                            QETH_CARD_IFNAME(card), rc);
4616         else {
4617                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4618                         rc = -EFAULT;
4619         }
4620 out:
4621         kfree(ureq);
4622         kfree(qinfo.udata);
4623         return rc;
4624 }
4625 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4626
4627 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4628                 struct qeth_reply *reply, unsigned long data)
4629 {
4630         struct qeth_ipa_cmd *cmd;
4631         struct qeth_qoat_priv *priv;
4632         char *resdata;
4633         int resdatalen;
4634
4635         QETH_CARD_TEXT(card, 3, "qoatcb");
4636
4637         cmd = (struct qeth_ipa_cmd *)data;
4638         priv = (struct qeth_qoat_priv *)reply->param;
4639         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4640         resdata = (char *)data + 28;
4641
4642         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4643                 cmd->hdr.return_code = IPA_RC_FFFF;
4644                 return 0;
4645         }
4646
4647         memcpy((priv->buffer + priv->response_len), resdata,
4648                 resdatalen);
4649         priv->response_len += resdatalen;
4650
4651         if (cmd->data.setadapterparms.hdr.seq_no <
4652             cmd->data.setadapterparms.hdr.used_total)
4653                 return 1;
4654         return 0;
4655 }
4656
4657 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4658 {
4659         int rc = 0;
4660         struct qeth_cmd_buffer *iob;
4661         struct qeth_ipa_cmd *cmd;
4662         struct qeth_query_oat *oat_req;
4663         struct qeth_query_oat_data oat_data;
4664         struct qeth_qoat_priv priv;
4665         void __user *tmp;
4666
4667         QETH_CARD_TEXT(card, 3, "qoatcmd");
4668
4669         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4670                 rc = -EOPNOTSUPP;
4671                 goto out;
4672         }
4673
4674         if (copy_from_user(&oat_data, udata,
4675             sizeof(struct qeth_query_oat_data))) {
4676                         rc = -EFAULT;
4677                         goto out;
4678         }
4679
4680         priv.buffer_len = oat_data.buffer_len;
4681         priv.response_len = 0;
4682         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4683         if (!priv.buffer) {
4684                 rc = -ENOMEM;
4685                 goto out;
4686         }
4687
4688         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4689                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4690                                    sizeof(struct qeth_query_oat));
4691         if (!iob) {
4692                 rc = -ENOMEM;
4693                 goto out_free;
4694         }
4695         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4696         oat_req = &cmd->data.setadapterparms.data.query_oat;
4697         oat_req->subcmd_code = oat_data.command;
4698
4699         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4700                                &priv);
4701         if (!rc) {
4702                 if (is_compat_task())
4703                         tmp = compat_ptr(oat_data.ptr);
4704                 else
4705                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4706
4707                 if (copy_to_user(tmp, priv.buffer,
4708                     priv.response_len)) {
4709                         rc = -EFAULT;
4710                         goto out_free;
4711                 }
4712
4713                 oat_data.response_len = priv.response_len;
4714
4715                 if (copy_to_user(udata, &oat_data,
4716                     sizeof(struct qeth_query_oat_data)))
4717                         rc = -EFAULT;
4718         } else
4719                 if (rc == IPA_RC_FFFF)
4720                         rc = -EFAULT;
4721
4722 out_free:
4723         kfree(priv.buffer);
4724 out:
4725         return rc;
4726 }
4727 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4728
4729 static int qeth_query_card_info_cb(struct qeth_card *card,
4730                                    struct qeth_reply *reply, unsigned long data)
4731 {
4732         struct qeth_ipa_cmd *cmd;
4733         struct qeth_query_card_info *card_info;
4734         struct carrier_info *carrier_info;
4735
4736         QETH_CARD_TEXT(card, 2, "qcrdincb");
4737         carrier_info = (struct carrier_info *)reply->param;
4738         cmd = (struct qeth_ipa_cmd *)data;
4739         card_info = &cmd->data.setadapterparms.data.card_info;
4740         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4741                 carrier_info->card_type = card_info->card_type;
4742                 carrier_info->port_mode = card_info->port_mode;
4743                 carrier_info->port_speed = card_info->port_speed;
4744         }
4745
4746         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4747         return 0;
4748 }
4749
4750 static int qeth_query_card_info(struct qeth_card *card,
4751                                 struct carrier_info *carrier_info)
4752 {
4753         struct qeth_cmd_buffer *iob;
4754
4755         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4756         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4757                 return -EOPNOTSUPP;
4758         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4759                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4760         if (!iob)
4761                 return -ENOMEM;
4762         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4763                                         (void *)carrier_info);
4764 }
4765
4766 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4767 {
4768         switch (card->info.type) {
4769         case QETH_CARD_TYPE_IQD:
4770                 return 2;
4771         default:
4772                 return 0;
4773         }
4774 }
4775
4776 static void qeth_determine_capabilities(struct qeth_card *card)
4777 {
4778         int rc;
4779         int length;
4780         char *prcd;
4781         struct ccw_device *ddev;
4782         int ddev_offline = 0;
4783
4784         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4785         ddev = CARD_DDEV(card);
4786         if (!ddev->online) {
4787                 ddev_offline = 1;
4788                 rc = ccw_device_set_online(ddev);
4789                 if (rc) {
4790                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4791                         goto out;
4792                 }
4793         }
4794
4795         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4796         if (rc) {
4797                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4798                         dev_name(&card->gdev->dev), rc);
4799                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4800                 goto out_offline;
4801         }
4802         qeth_configure_unitaddr(card, prcd);
4803         if (ddev_offline)
4804                 qeth_configure_blkt_default(card, prcd);
4805         kfree(prcd);
4806
4807         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4808         if (rc)
4809                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4810
4811         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4812         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4813         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4814         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4815         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4816             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4817             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4818                 dev_info(&card->gdev->dev,
4819                         "Completion Queueing supported\n");
4820         } else {
4821                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4822         }
4823
4824
4825 out_offline:
4826         if (ddev_offline == 1)
4827                 ccw_device_set_offline(ddev);
4828 out:
4829         return;
4830 }
4831
4832 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4833         struct qdio_buffer **in_sbal_ptrs,
4834         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4835         int i;
4836
4837         if (card->options.cq == QETH_CQ_ENABLED) {
4838                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4839                              (card->qdio.no_in_queues - 1);
4840                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4841                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4842                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4843                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4844                 }
4845
4846                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4847         }
4848 }
4849
4850 static int qeth_qdio_establish(struct qeth_card *card)
4851 {
4852         struct qdio_initialize init_data;
4853         char *qib_param_field;
4854         struct qdio_buffer **in_sbal_ptrs;
4855         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4856         struct qdio_buffer **out_sbal_ptrs;
4857         int i, j, k;
4858         int rc = 0;
4859
4860         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4861
4862         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4863                               GFP_KERNEL);
4864         if (!qib_param_field) {
4865                 rc =  -ENOMEM;
4866                 goto out_free_nothing;
4867         }
4868
4869         qeth_create_qib_param_field(card, qib_param_field);
4870         qeth_create_qib_param_field_blkt(card, qib_param_field);
4871
4872         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4873                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4874                                GFP_KERNEL);
4875         if (!in_sbal_ptrs) {
4876                 rc = -ENOMEM;
4877                 goto out_free_qib_param;
4878         }
4879         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4880                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4881                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4882         }
4883
4884         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4885                                    GFP_KERNEL);
4886         if (!queue_start_poll) {
4887                 rc = -ENOMEM;
4888                 goto out_free_in_sbals;
4889         }
4890         for (i = 0; i < card->qdio.no_in_queues; ++i)
4891                 queue_start_poll[i] = card->discipline->start_poll;
4892
4893         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4894
4895         out_sbal_ptrs =
4896                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4897                         sizeof(void *), GFP_KERNEL);
4898         if (!out_sbal_ptrs) {
4899                 rc = -ENOMEM;
4900                 goto out_free_queue_start_poll;
4901         }
4902         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4903                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4904                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4905                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4906                 }
4907
4908         memset(&init_data, 0, sizeof(struct qdio_initialize));
4909         init_data.cdev                   = CARD_DDEV(card);
4910         init_data.q_format               = qeth_get_qdio_q_format(card);
4911         init_data.qib_param_field_format = 0;
4912         init_data.qib_param_field        = qib_param_field;
4913         init_data.no_input_qs            = card->qdio.no_in_queues;
4914         init_data.no_output_qs           = card->qdio.no_out_queues;
4915         init_data.input_handler          = card->discipline->input_handler;
4916         init_data.output_handler         = card->discipline->output_handler;
4917         init_data.queue_start_poll_array = queue_start_poll;
4918         init_data.int_parm               = (unsigned long) card;
4919         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4920         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4921         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4922         init_data.scan_threshold =
4923                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4924
4925         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4926                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4927                 rc = qdio_allocate(&init_data);
4928                 if (rc) {
4929                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4930                         goto out;
4931                 }
4932                 rc = qdio_establish(&init_data);
4933                 if (rc) {
4934                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4935                         qdio_free(CARD_DDEV(card));
4936                 }
4937         }
4938
4939         switch (card->options.cq) {
4940         case QETH_CQ_ENABLED:
4941                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4942                 break;
4943         case QETH_CQ_DISABLED:
4944                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4945                 break;
4946         default:
4947                 break;
4948         }
4949 out:
4950         kfree(out_sbal_ptrs);
4951 out_free_queue_start_poll:
4952         kfree(queue_start_poll);
4953 out_free_in_sbals:
4954         kfree(in_sbal_ptrs);
4955 out_free_qib_param:
4956         kfree(qib_param_field);
4957 out_free_nothing:
4958         return rc;
4959 }
4960
4961 static void qeth_core_free_card(struct qeth_card *card)
4962 {
4963
4964         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4965         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4966         qeth_clean_channel(&card->read);
4967         qeth_clean_channel(&card->write);
4968         if (card->dev)
4969                 free_netdev(card->dev);
4970         kfree(card->ip_tbd_list);
4971         qeth_free_qdio_buffers(card);
4972         unregister_service_level(&card->qeth_service_level);
4973         kfree(card);
4974 }
4975
4976 void qeth_trace_features(struct qeth_card *card)
4977 {
4978         QETH_CARD_TEXT(card, 2, "features");
4979         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4980         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4981         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4982         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4983                       sizeof(card->info.diagass_support));
4984 }
4985 EXPORT_SYMBOL_GPL(qeth_trace_features);
4986
4987 static struct ccw_device_id qeth_ids[] = {
4988         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4989                                         .driver_info = QETH_CARD_TYPE_OSD},
4990         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4991                                         .driver_info = QETH_CARD_TYPE_IQD},
4992         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4993                                         .driver_info = QETH_CARD_TYPE_OSN},
4994         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4995                                         .driver_info = QETH_CARD_TYPE_OSM},
4996         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4997                                         .driver_info = QETH_CARD_TYPE_OSX},
4998         {},
4999 };
5000 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5001
5002 static struct ccw_driver qeth_ccw_driver = {
5003         .driver = {
5004                 .owner = THIS_MODULE,
5005                 .name = "qeth",
5006         },
5007         .ids = qeth_ids,
5008         .probe = ccwgroup_probe_ccwdev,
5009         .remove = ccwgroup_remove_ccwdev,
5010 };
5011
5012 int qeth_core_hardsetup_card(struct qeth_card *card)
5013 {
5014         int retries = 3;
5015         int rc;
5016
5017         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5018         atomic_set(&card->force_alloc_skb, 0);
5019         qeth_update_from_chp_desc(card);
5020 retry:
5021         if (retries < 3)
5022                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5023                         dev_name(&card->gdev->dev));
5024         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5025         ccw_device_set_offline(CARD_DDEV(card));
5026         ccw_device_set_offline(CARD_WDEV(card));
5027         ccw_device_set_offline(CARD_RDEV(card));
5028         qdio_free(CARD_DDEV(card));
5029         rc = ccw_device_set_online(CARD_RDEV(card));
5030         if (rc)
5031                 goto retriable;
5032         rc = ccw_device_set_online(CARD_WDEV(card));
5033         if (rc)
5034                 goto retriable;
5035         rc = ccw_device_set_online(CARD_DDEV(card));
5036         if (rc)
5037                 goto retriable;
5038 retriable:
5039         if (rc == -ERESTARTSYS) {
5040                 QETH_DBF_TEXT(SETUP, 2, "break1");
5041                 return rc;
5042         } else if (rc) {
5043                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5044                 if (--retries < 0)
5045                         goto out;
5046                 else
5047                         goto retry;
5048         }
5049         qeth_determine_capabilities(card);
5050         qeth_init_tokens(card);
5051         qeth_init_func_level(card);
5052         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5053         if (rc == -ERESTARTSYS) {
5054                 QETH_DBF_TEXT(SETUP, 2, "break2");
5055                 return rc;
5056         } else if (rc) {
5057                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5058                 if (--retries < 0)
5059                         goto out;
5060                 else
5061                         goto retry;
5062         }
5063         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5064         if (rc == -ERESTARTSYS) {
5065                 QETH_DBF_TEXT(SETUP, 2, "break3");
5066                 return rc;
5067         } else if (rc) {
5068                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5069                 if (--retries < 0)
5070                         goto out;
5071                 else
5072                         goto retry;
5073         }
5074         card->read_or_write_problem = 0;
5075         rc = qeth_mpc_initialize(card);
5076         if (rc) {
5077                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5078                 goto out;
5079         }
5080
5081         card->options.ipa4.supported_funcs = 0;
5082         card->options.ipa6.supported_funcs = 0;
5083         card->options.adp.supported_funcs = 0;
5084         card->options.sbp.supported_funcs = 0;
5085         card->info.diagass_support = 0;
5086         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5087         if (rc == -ENOMEM)
5088                 goto out;
5089         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5090                 rc = qeth_query_setadapterparms(card);
5091                 if (rc < 0) {
5092                         QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5093                         goto out;
5094                 }
5095         }
5096         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5097                 rc = qeth_query_setdiagass(card);
5098                 if (rc < 0) {
5099                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5100                         goto out;
5101                 }
5102         }
5103         return 0;
5104 out:
5105         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5106                 "an error on the device\n");
5107         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5108                 dev_name(&card->gdev->dev), rc);
5109         return rc;
5110 }
5111 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5112
5113 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5114                 struct qdio_buffer_element *element,
5115                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5116 {
5117         struct page *page = virt_to_page(element->addr);
5118         if (*pskb == NULL) {
5119                 if (qethbuffer->rx_skb) {
5120                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5121                         *pskb = qethbuffer->rx_skb;
5122                         qethbuffer->rx_skb = NULL;
5123                 } else {
5124                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5125                         if (!(*pskb))
5126                                 return -ENOMEM;
5127                 }
5128
5129                 skb_reserve(*pskb, ETH_HLEN);
5130                 if (data_len <= QETH_RX_PULL_LEN) {
5131                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5132                                 data_len);
5133                 } else {
5134                         get_page(page);
5135                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5136                                element->addr + offset, QETH_RX_PULL_LEN);
5137                         skb_fill_page_desc(*pskb, *pfrag, page,
5138                                 offset + QETH_RX_PULL_LEN,
5139                                 data_len - QETH_RX_PULL_LEN);
5140                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5141                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5142                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5143                         (*pfrag)++;
5144                 }
5145         } else {
5146                 get_page(page);
5147                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5148                 (*pskb)->data_len += data_len;
5149                 (*pskb)->len      += data_len;
5150                 (*pskb)->truesize += data_len;
5151                 (*pfrag)++;
5152         }
5153
5154
5155         return 0;
5156 }
5157
5158 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5159 {
5160         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5161 }
5162
5163 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5164                 struct qeth_qdio_buffer *qethbuffer,
5165                 struct qdio_buffer_element **__element, int *__offset,
5166                 struct qeth_hdr **hdr)
5167 {
5168         struct qdio_buffer_element *element = *__element;
5169         struct qdio_buffer *buffer = qethbuffer->buffer;
5170         int offset = *__offset;
5171         struct sk_buff *skb = NULL;
5172         int skb_len = 0;
5173         void *data_ptr;
5174         int data_len;
5175         int headroom = 0;
5176         int use_rx_sg = 0;
5177         int frag = 0;
5178
5179         /* qeth_hdr must not cross element boundaries */
5180         if (element->length < offset + sizeof(struct qeth_hdr)) {
5181                 if (qeth_is_last_sbale(element))
5182                         return NULL;
5183                 element++;
5184                 offset = 0;
5185                 if (element->length < sizeof(struct qeth_hdr))
5186                         return NULL;
5187         }
5188         *hdr = element->addr + offset;
5189
5190         offset += sizeof(struct qeth_hdr);
5191         switch ((*hdr)->hdr.l2.id) {
5192         case QETH_HEADER_TYPE_LAYER2:
5193                 skb_len = (*hdr)->hdr.l2.pkt_length;
5194                 break;
5195         case QETH_HEADER_TYPE_LAYER3:
5196                 skb_len = (*hdr)->hdr.l3.length;
5197                 headroom = ETH_HLEN;
5198                 break;
5199         case QETH_HEADER_TYPE_OSN:
5200                 skb_len = (*hdr)->hdr.osn.pdu_length;
5201                 headroom = sizeof(struct qeth_hdr);
5202                 break;
5203         default:
5204                 break;
5205         }
5206
5207         if (!skb_len)
5208                 return NULL;
5209
5210         if (((skb_len >= card->options.rx_sg_cb) &&
5211              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5212              (!atomic_read(&card->force_alloc_skb))) ||
5213             (card->options.cq == QETH_CQ_ENABLED)) {
5214                 use_rx_sg = 1;
5215         } else {
5216                 skb = dev_alloc_skb(skb_len + headroom);
5217                 if (!skb)
5218                         goto no_mem;
5219                 if (headroom)
5220                         skb_reserve(skb, headroom);
5221         }
5222
5223         data_ptr = element->addr + offset;
5224         while (skb_len) {
5225                 data_len = min(skb_len, (int)(element->length - offset));
5226                 if (data_len) {
5227                         if (use_rx_sg) {
5228                                 if (qeth_create_skb_frag(qethbuffer, element,
5229                                     &skb, offset, &frag, data_len))
5230                                         goto no_mem;
5231                         } else {
5232                                 memcpy(skb_put(skb, data_len), data_ptr,
5233                                         data_len);
5234                         }
5235                 }
5236                 skb_len -= data_len;
5237                 if (skb_len) {
5238                         if (qeth_is_last_sbale(element)) {
5239                                 QETH_CARD_TEXT(card, 4, "unexeob");
5240                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5241                                 dev_kfree_skb_any(skb);
5242                                 card->stats.rx_errors++;
5243                                 return NULL;
5244                         }
5245                         element++;
5246                         offset = 0;
5247                         data_ptr = element->addr;
5248                 } else {
5249                         offset += data_len;
5250                 }
5251         }
5252         *__element = element;
5253         *__offset = offset;
5254         if (use_rx_sg && card->options.performance_stats) {
5255                 card->perf_stats.sg_skbs_rx++;
5256                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5257         }
5258         return skb;
5259 no_mem:
5260         if (net_ratelimit()) {
5261                 QETH_CARD_TEXT(card, 2, "noskbmem");
5262         }
5263         card->stats.rx_dropped++;
5264         return NULL;
5265 }
5266 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5267
5268 static int qeth_setassparms_cb(struct qeth_card *card,
5269                                struct qeth_reply *reply, unsigned long data)
5270 {
5271         struct qeth_ipa_cmd *cmd;
5272
5273         QETH_CARD_TEXT(card, 4, "defadpcb");
5274
5275         cmd = (struct qeth_ipa_cmd *) data;
5276         if (cmd->hdr.return_code == 0) {
5277                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5278                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5279                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5280                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5281                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5282         }
5283         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
5284             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5285                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
5286                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
5287         }
5288         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
5289             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5290                 card->info.tx_csum_mask =
5291                         cmd->data.setassparms.data.flags_32bit;
5292                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
5293         }
5294
5295         return 0;
5296 }
5297
5298 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5299                                                  enum qeth_ipa_funcs ipa_func,
5300                                                  __u16 cmd_code, __u16 len,
5301                                                  enum qeth_prot_versions prot)
5302 {
5303         struct qeth_cmd_buffer *iob;
5304         struct qeth_ipa_cmd *cmd;
5305
5306         QETH_CARD_TEXT(card, 4, "getasscm");
5307         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5308
5309         if (iob) {
5310                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5311                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5312                 cmd->data.setassparms.hdr.length = 8 + len;
5313                 cmd->data.setassparms.hdr.command_code = cmd_code;
5314                 cmd->data.setassparms.hdr.return_code = 0;
5315                 cmd->data.setassparms.hdr.seq_no = 0;
5316         }
5317
5318         return iob;
5319 }
5320 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5321
5322 int qeth_send_setassparms(struct qeth_card *card,
5323                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5324                           int (*reply_cb)(struct qeth_card *,
5325                                           struct qeth_reply *, unsigned long),
5326                           void *reply_param)
5327 {
5328         int rc;
5329         struct qeth_ipa_cmd *cmd;
5330
5331         QETH_CARD_TEXT(card, 4, "sendassp");
5332
5333         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5334         if (len <= sizeof(__u32))
5335                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5336         else   /* (len > sizeof(__u32)) */
5337                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5338
5339         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5340         return rc;
5341 }
5342 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5343
5344 int qeth_send_simple_setassparms(struct qeth_card *card,
5345                                  enum qeth_ipa_funcs ipa_func,
5346                                  __u16 cmd_code, long data)
5347 {
5348         int rc;
5349         int length = 0;
5350         struct qeth_cmd_buffer *iob;
5351
5352         QETH_CARD_TEXT(card, 4, "simassp4");
5353         if (data)
5354                 length = sizeof(__u32);
5355         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5356                                        length, QETH_PROT_IPV4);
5357         if (!iob)
5358                 return -ENOMEM;
5359         rc = qeth_send_setassparms(card, iob, length, data,
5360                                    qeth_setassparms_cb, NULL);
5361         return rc;
5362 }
5363 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5364
5365 static void qeth_unregister_dbf_views(void)
5366 {
5367         int x;
5368         for (x = 0; x < QETH_DBF_INFOS; x++) {
5369                 debug_unregister(qeth_dbf[x].id);
5370                 qeth_dbf[x].id = NULL;
5371         }
5372 }
5373
5374 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5375 {
5376         char dbf_txt_buf[32];
5377         va_list args;
5378
5379         if (!debug_level_enabled(id, level))
5380                 return;
5381         va_start(args, fmt);
5382         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5383         va_end(args);
5384         debug_text_event(id, level, dbf_txt_buf);
5385 }
5386 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5387
5388 static int qeth_register_dbf_views(void)
5389 {
5390         int ret;
5391         int x;
5392
5393         for (x = 0; x < QETH_DBF_INFOS; x++) {
5394                 /* register the areas */
5395                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5396                                                 qeth_dbf[x].pages,
5397                                                 qeth_dbf[x].areas,
5398                                                 qeth_dbf[x].len);
5399                 if (qeth_dbf[x].id == NULL) {
5400                         qeth_unregister_dbf_views();
5401                         return -ENOMEM;
5402                 }
5403
5404                 /* register a view */
5405                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5406                 if (ret) {
5407                         qeth_unregister_dbf_views();
5408                         return ret;
5409                 }
5410
5411                 /* set a passing level */
5412                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5413         }
5414
5415         return 0;
5416 }
5417
5418 int qeth_core_load_discipline(struct qeth_card *card,
5419                 enum qeth_discipline_id discipline)
5420 {
5421         int rc = 0;
5422         mutex_lock(&qeth_mod_mutex);
5423         switch (discipline) {
5424         case QETH_DISCIPLINE_LAYER3:
5425                 card->discipline = try_then_request_module(
5426                         symbol_get(qeth_l3_discipline), "qeth_l3");
5427                 break;
5428         case QETH_DISCIPLINE_LAYER2:
5429                 card->discipline = try_then_request_module(
5430                         symbol_get(qeth_l2_discipline), "qeth_l2");
5431                 break;
5432         }
5433         if (!card->discipline) {
5434                 dev_err(&card->gdev->dev, "There is no kernel module to "
5435                         "support discipline %d\n", discipline);
5436                 rc = -EINVAL;
5437         }
5438         mutex_unlock(&qeth_mod_mutex);
5439         return rc;
5440 }
5441
5442 void qeth_core_free_discipline(struct qeth_card *card)
5443 {
5444         if (card->options.layer2)
5445                 symbol_put(qeth_l2_discipline);
5446         else
5447                 symbol_put(qeth_l3_discipline);
5448         card->discipline = NULL;
5449 }
5450
5451 static const struct device_type qeth_generic_devtype = {
5452         .name = "qeth_generic",
5453         .groups = qeth_generic_attr_groups,
5454 };
5455 static const struct device_type qeth_osn_devtype = {
5456         .name = "qeth_osn",
5457         .groups = qeth_osn_attr_groups,
5458 };
5459
5460 #define DBF_NAME_LEN    20
5461
5462 struct qeth_dbf_entry {
5463         char dbf_name[DBF_NAME_LEN];
5464         debug_info_t *dbf_info;
5465         struct list_head dbf_list;
5466 };
5467
5468 static LIST_HEAD(qeth_dbf_list);
5469 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5470
5471 static debug_info_t *qeth_get_dbf_entry(char *name)
5472 {
5473         struct qeth_dbf_entry *entry;
5474         debug_info_t *rc = NULL;
5475
5476         mutex_lock(&qeth_dbf_list_mutex);
5477         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5478                 if (strcmp(entry->dbf_name, name) == 0) {
5479                         rc = entry->dbf_info;
5480                         break;
5481                 }
5482         }
5483         mutex_unlock(&qeth_dbf_list_mutex);
5484         return rc;
5485 }
5486
5487 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5488 {
5489         struct qeth_dbf_entry *new_entry;
5490
5491         card->debug = debug_register(name, 2, 1, 8);
5492         if (!card->debug) {
5493                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5494                 goto err;
5495         }
5496         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5497                 goto err_dbg;
5498         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5499         if (!new_entry)
5500                 goto err_dbg;
5501         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5502         new_entry->dbf_info = card->debug;
5503         mutex_lock(&qeth_dbf_list_mutex);
5504         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5505         mutex_unlock(&qeth_dbf_list_mutex);
5506
5507         return 0;
5508
5509 err_dbg:
5510         debug_unregister(card->debug);
5511 err:
5512         return -ENOMEM;
5513 }
5514
5515 static void qeth_clear_dbf_list(void)
5516 {
5517         struct qeth_dbf_entry *entry, *tmp;
5518
5519         mutex_lock(&qeth_dbf_list_mutex);
5520         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5521                 list_del(&entry->dbf_list);
5522                 debug_unregister(entry->dbf_info);
5523                 kfree(entry);
5524         }
5525         mutex_unlock(&qeth_dbf_list_mutex);
5526 }
5527
5528 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5529 {
5530         struct qeth_card *card;
5531         struct device *dev;
5532         int rc;
5533         unsigned long flags;
5534         char dbf_name[DBF_NAME_LEN];
5535
5536         QETH_DBF_TEXT(SETUP, 2, "probedev");
5537
5538         dev = &gdev->dev;
5539         if (!get_device(dev))
5540                 return -ENODEV;
5541
5542         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5543
5544         card = qeth_alloc_card();
5545         if (!card) {
5546                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5547                 rc = -ENOMEM;
5548                 goto err_dev;
5549         }
5550
5551         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5552                 dev_name(&gdev->dev));
5553         card->debug = qeth_get_dbf_entry(dbf_name);
5554         if (!card->debug) {
5555                 rc = qeth_add_dbf_entry(card, dbf_name);
5556                 if (rc)
5557                         goto err_card;
5558         }
5559
5560         card->read.ccwdev  = gdev->cdev[0];
5561         card->write.ccwdev = gdev->cdev[1];
5562         card->data.ccwdev  = gdev->cdev[2];
5563         dev_set_drvdata(&gdev->dev, card);
5564         card->gdev = gdev;
5565         gdev->cdev[0]->handler = qeth_irq;
5566         gdev->cdev[1]->handler = qeth_irq;
5567         gdev->cdev[2]->handler = qeth_irq;
5568
5569         rc = qeth_determine_card_type(card);
5570         if (rc) {
5571                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5572                 goto err_card;
5573         }
5574         rc = qeth_setup_card(card);
5575         if (rc) {
5576                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5577                 goto err_card;
5578         }
5579
5580         if (card->info.type == QETH_CARD_TYPE_OSN)
5581                 gdev->dev.type = &qeth_osn_devtype;
5582         else
5583                 gdev->dev.type = &qeth_generic_devtype;
5584
5585         switch (card->info.type) {
5586         case QETH_CARD_TYPE_OSN:
5587         case QETH_CARD_TYPE_OSM:
5588                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5589                 if (rc)
5590                         goto err_card;
5591                 rc = card->discipline->setup(card->gdev);
5592                 if (rc)
5593                         goto err_disc;
5594         case QETH_CARD_TYPE_OSD:
5595         case QETH_CARD_TYPE_OSX:
5596         default:
5597                 break;
5598         }
5599
5600         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5601         list_add_tail(&card->list, &qeth_core_card_list.list);
5602         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5603
5604         qeth_determine_capabilities(card);
5605         return 0;
5606
5607 err_disc:
5608         qeth_core_free_discipline(card);
5609 err_card:
5610         qeth_core_free_card(card);
5611 err_dev:
5612         put_device(dev);
5613         return rc;
5614 }
5615
5616 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5617 {
5618         unsigned long flags;
5619         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5620
5621         QETH_DBF_TEXT(SETUP, 2, "removedv");
5622
5623         if (card->discipline) {
5624                 card->discipline->remove(gdev);
5625                 qeth_core_free_discipline(card);
5626         }
5627
5628         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5629         list_del(&card->list);
5630         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5631         qeth_core_free_card(card);
5632         dev_set_drvdata(&gdev->dev, NULL);
5633         put_device(&gdev->dev);
5634         return;
5635 }
5636
5637 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5638 {
5639         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5640         int rc = 0;
5641         int def_discipline;
5642
5643         if (!card->discipline) {
5644                 if (card->info.type == QETH_CARD_TYPE_IQD)
5645                         def_discipline = QETH_DISCIPLINE_LAYER3;
5646                 else
5647                         def_discipline = QETH_DISCIPLINE_LAYER2;
5648                 rc = qeth_core_load_discipline(card, def_discipline);
5649                 if (rc)
5650                         goto err;
5651                 rc = card->discipline->setup(card->gdev);
5652                 if (rc)
5653                         goto err;
5654         }
5655         rc = card->discipline->set_online(gdev);
5656 err:
5657         return rc;
5658 }
5659
5660 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5661 {
5662         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5663         return card->discipline->set_offline(gdev);
5664 }
5665
5666 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5667 {
5668         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5669         if (card->discipline && card->discipline->shutdown)
5670                 card->discipline->shutdown(gdev);
5671 }
5672
5673 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5674 {
5675         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5676         if (card->discipline && card->discipline->prepare)
5677                 return card->discipline->prepare(gdev);
5678         return 0;
5679 }
5680
5681 static void qeth_core_complete(struct ccwgroup_device *gdev)
5682 {
5683         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5684         if (card->discipline && card->discipline->complete)
5685                 card->discipline->complete(gdev);
5686 }
5687
5688 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5689 {
5690         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5691         if (card->discipline && card->discipline->freeze)
5692                 return card->discipline->freeze(gdev);
5693         return 0;
5694 }
5695
5696 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5697 {
5698         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5699         if (card->discipline && card->discipline->thaw)
5700                 return card->discipline->thaw(gdev);
5701         return 0;
5702 }
5703
5704 static int qeth_core_restore(struct ccwgroup_device *gdev)
5705 {
5706         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5707         if (card->discipline && card->discipline->restore)
5708                 return card->discipline->restore(gdev);
5709         return 0;
5710 }
5711
5712 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5713         .driver = {
5714                 .owner = THIS_MODULE,
5715                 .name = "qeth",
5716         },
5717         .setup = qeth_core_probe_device,
5718         .remove = qeth_core_remove_device,
5719         .set_online = qeth_core_set_online,
5720         .set_offline = qeth_core_set_offline,
5721         .shutdown = qeth_core_shutdown,
5722         .prepare = qeth_core_prepare,
5723         .complete = qeth_core_complete,
5724         .freeze = qeth_core_freeze,
5725         .thaw = qeth_core_thaw,
5726         .restore = qeth_core_restore,
5727 };
5728
5729 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5730                                             const char *buf, size_t count)
5731 {
5732         int err;
5733
5734         err = ccwgroup_create_dev(qeth_core_root_dev,
5735                                   &qeth_core_ccwgroup_driver, 3, buf);
5736
5737         return err ? err : count;
5738 }
5739 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5740
5741 static struct attribute *qeth_drv_attrs[] = {
5742         &driver_attr_group.attr,
5743         NULL,
5744 };
5745 static struct attribute_group qeth_drv_attr_group = {
5746         .attrs = qeth_drv_attrs,
5747 };
5748 static const struct attribute_group *qeth_drv_attr_groups[] = {
5749         &qeth_drv_attr_group,
5750         NULL,
5751 };
5752
5753 static struct {
5754         const char str[ETH_GSTRING_LEN];
5755 } qeth_ethtool_stats_keys[] = {
5756 /*  0 */{"rx skbs"},
5757         {"rx buffers"},
5758         {"tx skbs"},
5759         {"tx buffers"},
5760         {"tx skbs no packing"},
5761         {"tx buffers no packing"},
5762         {"tx skbs packing"},
5763         {"tx buffers packing"},
5764         {"tx sg skbs"},
5765         {"tx sg frags"},
5766 /* 10 */{"rx sg skbs"},
5767         {"rx sg frags"},
5768         {"rx sg page allocs"},
5769         {"tx large kbytes"},
5770         {"tx large count"},
5771         {"tx pk state ch n->p"},
5772         {"tx pk state ch p->n"},
5773         {"tx pk watermark low"},
5774         {"tx pk watermark high"},
5775         {"queue 0 buffer usage"},
5776 /* 20 */{"queue 1 buffer usage"},
5777         {"queue 2 buffer usage"},
5778         {"queue 3 buffer usage"},
5779         {"rx poll time"},
5780         {"rx poll count"},
5781         {"rx do_QDIO time"},
5782         {"rx do_QDIO count"},
5783         {"tx handler time"},
5784         {"tx handler count"},
5785         {"tx time"},
5786 /* 30 */{"tx count"},
5787         {"tx do_QDIO time"},
5788         {"tx do_QDIO count"},
5789         {"tx csum"},
5790         {"tx lin"},
5791         {"cq handler count"},
5792         {"cq handler time"}
5793 };
5794
5795 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5796 {
5797         switch (stringset) {
5798         case ETH_SS_STATS:
5799                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5800         default:
5801                 return -EINVAL;
5802         }
5803 }
5804 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5805
5806 void qeth_core_get_ethtool_stats(struct net_device *dev,
5807                 struct ethtool_stats *stats, u64 *data)
5808 {
5809         struct qeth_card *card = dev->ml_priv;
5810         data[0] = card->stats.rx_packets -
5811                                 card->perf_stats.initial_rx_packets;
5812         data[1] = card->perf_stats.bufs_rec;
5813         data[2] = card->stats.tx_packets -
5814                                 card->perf_stats.initial_tx_packets;
5815         data[3] = card->perf_stats.bufs_sent;
5816         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5817                         - card->perf_stats.skbs_sent_pack;
5818         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5819         data[6] = card->perf_stats.skbs_sent_pack;
5820         data[7] = card->perf_stats.bufs_sent_pack;
5821         data[8] = card->perf_stats.sg_skbs_sent;
5822         data[9] = card->perf_stats.sg_frags_sent;
5823         data[10] = card->perf_stats.sg_skbs_rx;
5824         data[11] = card->perf_stats.sg_frags_rx;
5825         data[12] = card->perf_stats.sg_alloc_page_rx;
5826         data[13] = (card->perf_stats.large_send_bytes >> 10);
5827         data[14] = card->perf_stats.large_send_cnt;
5828         data[15] = card->perf_stats.sc_dp_p;
5829         data[16] = card->perf_stats.sc_p_dp;
5830         data[17] = QETH_LOW_WATERMARK_PACK;
5831         data[18] = QETH_HIGH_WATERMARK_PACK;
5832         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5833         data[20] = (card->qdio.no_out_queues > 1) ?
5834                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5835         data[21] = (card->qdio.no_out_queues > 2) ?
5836                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5837         data[22] = (card->qdio.no_out_queues > 3) ?
5838                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5839         data[23] = card->perf_stats.inbound_time;
5840         data[24] = card->perf_stats.inbound_cnt;
5841         data[25] = card->perf_stats.inbound_do_qdio_time;
5842         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5843         data[27] = card->perf_stats.outbound_handler_time;
5844         data[28] = card->perf_stats.outbound_handler_cnt;
5845         data[29] = card->perf_stats.outbound_time;
5846         data[30] = card->perf_stats.outbound_cnt;
5847         data[31] = card->perf_stats.outbound_do_qdio_time;
5848         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5849         data[33] = card->perf_stats.tx_csum;
5850         data[34] = card->perf_stats.tx_lin;
5851         data[35] = card->perf_stats.cq_cnt;
5852         data[36] = card->perf_stats.cq_time;
5853 }
5854 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5855
5856 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5857 {
5858         switch (stringset) {
5859         case ETH_SS_STATS:
5860                 memcpy(data, &qeth_ethtool_stats_keys,
5861                         sizeof(qeth_ethtool_stats_keys));
5862                 break;
5863         default:
5864                 WARN_ON(1);
5865                 break;
5866         }
5867 }
5868 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5869
5870 void qeth_core_get_drvinfo(struct net_device *dev,
5871                 struct ethtool_drvinfo *info)
5872 {
5873         struct qeth_card *card = dev->ml_priv;
5874
5875         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5876                 sizeof(info->driver));
5877         strlcpy(info->version, "1.0", sizeof(info->version));
5878         strlcpy(info->fw_version, card->info.mcl_level,
5879                 sizeof(info->fw_version));
5880         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5881                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5882 }
5883 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5884
5885 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5886 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5887 /* Always advertize and support all speeds up to specified, and only one     */
5888 /* specified port type.                                                      */
5889 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5890                                 int maxspeed, int porttype)
5891 {
5892         int port_sup, port_adv, spd_sup, spd_adv;
5893
5894         switch (porttype) {
5895         case PORT_TP:
5896                 port_sup = SUPPORTED_TP;
5897                 port_adv = ADVERTISED_TP;
5898                 break;
5899         case PORT_FIBRE:
5900                 port_sup = SUPPORTED_FIBRE;
5901                 port_adv = ADVERTISED_FIBRE;
5902                 break;
5903         default:
5904                 port_sup = SUPPORTED_TP;
5905                 port_adv = ADVERTISED_TP;
5906                 WARN_ON_ONCE(1);
5907         }
5908
5909         /* "Fallthrough" case'es ordered from high to low result in setting  */
5910         /* flags cumulatively, starting from the specified speed and down to */
5911         /* the lowest possible.                                              */
5912         spd_sup = 0;
5913         spd_adv = 0;
5914         switch (maxspeed) {
5915         case SPEED_10000:
5916                 spd_sup |= SUPPORTED_10000baseT_Full;
5917                 spd_adv |= ADVERTISED_10000baseT_Full;
5918         case SPEED_1000:
5919                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5920                 spd_adv |= ADVERTISED_1000baseT_Half |
5921                                                 ADVERTISED_1000baseT_Full;
5922         case SPEED_100:
5923                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5924                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5925         case SPEED_10:
5926                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5927                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5928         break;
5929         default:
5930                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5931                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5932                 WARN_ON_ONCE(1);
5933         }
5934         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5935         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5936 }
5937
5938 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5939                                         struct ethtool_cmd *ecmd)
5940 {
5941         struct qeth_card *card = netdev->ml_priv;
5942         enum qeth_link_types link_type;
5943         struct carrier_info carrier_info;
5944         int rc;
5945         u32 speed;
5946
5947         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5948                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5949         else
5950                 link_type = card->info.link_type;
5951
5952         ecmd->transceiver = XCVR_INTERNAL;
5953         ecmd->duplex = DUPLEX_FULL;
5954         ecmd->autoneg = AUTONEG_ENABLE;
5955
5956         switch (link_type) {
5957         case QETH_LINK_TYPE_FAST_ETH:
5958         case QETH_LINK_TYPE_LANE_ETH100:
5959                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5960                 speed = SPEED_100;
5961                 ecmd->port = PORT_TP;
5962                 break;
5963
5964         case QETH_LINK_TYPE_GBIT_ETH:
5965         case QETH_LINK_TYPE_LANE_ETH1000:
5966                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5967                 speed = SPEED_1000;
5968                 ecmd->port = PORT_FIBRE;
5969                 break;
5970
5971         case QETH_LINK_TYPE_10GBIT_ETH:
5972                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5973                 speed = SPEED_10000;
5974                 ecmd->port = PORT_FIBRE;
5975                 break;
5976
5977         default:
5978                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5979                 speed = SPEED_10;
5980                 ecmd->port = PORT_TP;
5981         }
5982         ethtool_cmd_speed_set(ecmd, speed);
5983
5984         /* Check if we can obtain more accurate information.     */
5985         /* If QUERY_CARD_INFO command is not supported or fails, */
5986         /* just return the heuristics that was filled above.     */
5987         if (!qeth_card_hw_is_reachable(card))
5988                 return -ENODEV;
5989         rc = qeth_query_card_info(card, &carrier_info);
5990         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5991                 return 0;
5992         if (rc) /* report error from the hardware operation */
5993                 return rc;
5994         /* on success, fill in the information got from the hardware */
5995
5996         netdev_dbg(netdev,
5997         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5998                         carrier_info.card_type,
5999                         carrier_info.port_mode,
6000                         carrier_info.port_speed);
6001
6002         /* Update attributes for which we've obtained more authoritative */
6003         /* information, leave the rest the way they where filled above.  */
6004         switch (carrier_info.card_type) {
6005         case CARD_INFO_TYPE_1G_COPPER_A:
6006         case CARD_INFO_TYPE_1G_COPPER_B:
6007                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6008                 ecmd->port = PORT_TP;
6009                 break;
6010         case CARD_INFO_TYPE_1G_FIBRE_A:
6011         case CARD_INFO_TYPE_1G_FIBRE_B:
6012                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6013                 ecmd->port = PORT_FIBRE;
6014                 break;
6015         case CARD_INFO_TYPE_10G_FIBRE_A:
6016         case CARD_INFO_TYPE_10G_FIBRE_B:
6017                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6018                 ecmd->port = PORT_FIBRE;
6019                 break;
6020         }
6021
6022         switch (carrier_info.port_mode) {
6023         case CARD_INFO_PORTM_FULLDUPLEX:
6024                 ecmd->duplex = DUPLEX_FULL;
6025                 break;
6026         case CARD_INFO_PORTM_HALFDUPLEX:
6027                 ecmd->duplex = DUPLEX_HALF;
6028                 break;
6029         }
6030
6031         switch (carrier_info.port_speed) {
6032         case CARD_INFO_PORTS_10M:
6033                 speed = SPEED_10;
6034                 break;
6035         case CARD_INFO_PORTS_100M:
6036                 speed = SPEED_100;
6037                 break;
6038         case CARD_INFO_PORTS_1G:
6039                 speed = SPEED_1000;
6040                 break;
6041         case CARD_INFO_PORTS_10G:
6042                 speed = SPEED_10000;
6043                 break;
6044         }
6045         ethtool_cmd_speed_set(ecmd, speed);
6046
6047         return 0;
6048 }
6049 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6050
6051 static int qeth_send_checksum_command(struct qeth_card *card)
6052 {
6053         int rc;
6054
6055         rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6056                                           IPA_CMD_ASS_START, 0);
6057         if (rc) {
6058                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
6059                         "failed, using SW checksumming\n",
6060                         QETH_CARD_IFNAME(card));
6061                 return rc;
6062         }
6063         rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
6064                                           IPA_CMD_ASS_ENABLE,
6065                                           card->info.csum_mask);
6066         if (rc) {
6067                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
6068                         "failed, using SW checksumming\n",
6069                         QETH_CARD_IFNAME(card));
6070                 return rc;
6071         }
6072         return 0;
6073 }
6074
6075 int qeth_set_rx_csum(struct qeth_card *card, int on)
6076 {
6077         int rc;
6078
6079         if (on) {
6080                 rc = qeth_send_checksum_command(card);
6081                 if (rc)
6082                         return -EIO;
6083                 dev_info(&card->gdev->dev,
6084                         "HW Checksumming (inbound) enabled\n");
6085         } else {
6086                 rc = qeth_send_simple_setassparms(card,
6087                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
6088                 if (rc)
6089                         return -EIO;
6090         }
6091         return 0;
6092 }
6093 EXPORT_SYMBOL_GPL(qeth_set_rx_csum);
6094
6095 int qeth_start_ipa_tx_checksum(struct qeth_card *card)
6096 {
6097         int rc = 0;
6098
6099         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6100                 return rc;
6101         rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6102                                           IPA_CMD_ASS_START, 0);
6103         if (rc)
6104                 goto err_out;
6105         rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
6106                                           IPA_CMD_ASS_ENABLE,
6107                                           card->info.tx_csum_mask);
6108         if (rc)
6109                 goto err_out;
6110
6111         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
6112         return rc;
6113 err_out:
6114         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
6115                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
6116         return rc;
6117 }
6118 EXPORT_SYMBOL_GPL(qeth_start_ipa_tx_checksum);
6119
6120 static int __init qeth_core_init(void)
6121 {
6122         int rc;
6123
6124         pr_info("loading core functions\n");
6125         INIT_LIST_HEAD(&qeth_core_card_list.list);
6126         INIT_LIST_HEAD(&qeth_dbf_list);
6127         rwlock_init(&qeth_core_card_list.rwlock);
6128         mutex_init(&qeth_mod_mutex);
6129
6130         qeth_wq = create_singlethread_workqueue("qeth_wq");
6131
6132         rc = qeth_register_dbf_views();
6133         if (rc)
6134                 goto out_err;
6135         qeth_core_root_dev = root_device_register("qeth");
6136         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6137         if (rc)
6138                 goto register_err;
6139         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6140                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6141         if (!qeth_core_header_cache) {
6142                 rc = -ENOMEM;
6143                 goto slab_err;
6144         }
6145         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6146                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6147         if (!qeth_qdio_outbuf_cache) {
6148                 rc = -ENOMEM;
6149                 goto cqslab_err;
6150         }
6151         rc = ccw_driver_register(&qeth_ccw_driver);
6152         if (rc)
6153                 goto ccw_err;
6154         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6155         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6156         if (rc)
6157                 goto ccwgroup_err;
6158
6159         return 0;
6160
6161 ccwgroup_err:
6162         ccw_driver_unregister(&qeth_ccw_driver);
6163 ccw_err:
6164         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6165 cqslab_err:
6166         kmem_cache_destroy(qeth_core_header_cache);
6167 slab_err:
6168         root_device_unregister(qeth_core_root_dev);
6169 register_err:
6170         qeth_unregister_dbf_views();
6171 out_err:
6172         pr_err("Initializing the qeth device driver failed\n");
6173         return rc;
6174 }
6175
6176 static void __exit qeth_core_exit(void)
6177 {
6178         qeth_clear_dbf_list();
6179         destroy_workqueue(qeth_wq);
6180         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6181         ccw_driver_unregister(&qeth_ccw_driver);
6182         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6183         kmem_cache_destroy(qeth_core_header_cache);
6184         root_device_unregister(qeth_core_root_dev);
6185         qeth_unregister_dbf_views();
6186         pr_info("core functions removed\n");
6187 }
6188
6189 module_init(qeth_core_init);
6190 module_exit(qeth_core_exit);
6191 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6192 MODULE_DESCRIPTION("qeth core functions");
6193 MODULE_LICENSE("GPL");