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 struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  59 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  60 static void qeth_free_buffer_pool(struct qeth_card *);
  61 static int qeth_qdio_establish(struct qeth_card *);
  62 static void qeth_free_qdio_buffers(struct qeth_card *);
  63 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  64                 struct qeth_qdio_out_buffer *buf,
  65                 enum iucv_tx_notify notification);
  66 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  67 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  68                 struct qeth_qdio_out_buffer *buf,
  69                 enum qeth_qdio_buffer_states newbufstate);
  70 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  71
  72 struct workqueue_struct *qeth_wq;
  73 EXPORT_SYMBOL_GPL(qeth_wq);
  74
  75 int qeth_card_hw_is_reachable(struct qeth_card *card)
  76 {
  77         return (card->state == CARD_STATE_SOFTSETUP) ||
  78                 (card->state == CARD_STATE_UP);
  79 }
  80 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  81
  82 static void qeth_close_dev_handler(struct work_struct *work)
  83 {
  84         struct qeth_card *card;
  85
  86         card = container_of(work, struct qeth_card, close_dev_work);
  87         QETH_CARD_TEXT(card, 2, "cldevhdl");
  88         rtnl_lock();
  89         dev_close(card->dev);
  90         rtnl_unlock();
  91         ccwgroup_set_offline(card->gdev);
  92 }
  93
  94 void qeth_close_dev(struct qeth_card *card)
  95 {
  96         QETH_CARD_TEXT(card, 2, "cldevsubm");
  97         queue_work(qeth_wq, &card->close_dev_work);
  98 }
  99 EXPORT_SYMBOL_GPL(qeth_close_dev);
 100
 101 static inline const char *qeth_get_cardname(struct qeth_card *card)
 102 {
 103         if (card->info.guestlan) {
 104                 switch (card->info.type) {
 105                 case QETH_CARD_TYPE_OSD:
 106                         return " Virtual NIC QDIO";
 107                 case QETH_CARD_TYPE_IQD:
 108                         return " Virtual NIC Hiper";
 109                 case QETH_CARD_TYPE_OSM:
 110                         return " Virtual NIC QDIO - OSM";
 111                 case QETH_CARD_TYPE_OSX:
 112                         return " Virtual NIC QDIO - OSX";
 113                 default:
 114                         return " unknown";
 115                 }
 116         } else {
 117                 switch (card->info.type) {
 118                 case QETH_CARD_TYPE_OSD:
 119                         return " OSD Express";
 120                 case QETH_CARD_TYPE_IQD:
 121                         return " HiperSockets";
 122                 case QETH_CARD_TYPE_OSN:
 123                         return " OSN QDIO";
 124                 case QETH_CARD_TYPE_OSM:
 125                         return " OSM QDIO";
 126                 case QETH_CARD_TYPE_OSX:
 127                         return " OSX QDIO";
 128                 default:
 129                         return " unknown";
 130                 }
 131         }
 132         return " n/a";
 133 }
 134
 135 /* max length to be returned: 14 */
 136 const char *qeth_get_cardname_short(struct qeth_card *card)
 137 {
 138         if (card->info.guestlan) {
 139                 switch (card->info.type) {
 140                 case QETH_CARD_TYPE_OSD:
 141                         return "Virt.NIC QDIO";
 142                 case QETH_CARD_TYPE_IQD:
 143                         return "Virt.NIC Hiper";
 144                 case QETH_CARD_TYPE_OSM:
 145                         return "Virt.NIC OSM";
 146                 case QETH_CARD_TYPE_OSX:
 147                         return "Virt.NIC OSX";
 148                 default:
 149                         return "unknown";
 150                 }
 151         } else {
 152                 switch (card->info.type) {
 153                 case QETH_CARD_TYPE_OSD:
 154                         switch (card->info.link_type) {
 155                         case QETH_LINK_TYPE_FAST_ETH:
 156                                 return "OSD_100";
 157                         case QETH_LINK_TYPE_HSTR:
 158                                 return "HSTR";
 159                         case QETH_LINK_TYPE_GBIT_ETH:
 160                                 return "OSD_1000";
 161                         case QETH_LINK_TYPE_10GBIT_ETH:
 162                                 return "OSD_10GIG";
 163                         case QETH_LINK_TYPE_LANE_ETH100:
 164                                 return "OSD_FE_LANE";
 165                         case QETH_LINK_TYPE_LANE_TR:
 166                                 return "OSD_TR_LANE";
 167                         case QETH_LINK_TYPE_LANE_ETH1000:
 168                                 return "OSD_GbE_LANE";
 169                         case QETH_LINK_TYPE_LANE:
 170                                 return "OSD_ATM_LANE";
 171                         default:
 172                                 return "OSD_Express";
 173                         }
 174                 case QETH_CARD_TYPE_IQD:
 175                         return "HiperSockets";
 176                 case QETH_CARD_TYPE_OSN:
 177                         return "OSN";
 178                 case QETH_CARD_TYPE_OSM:
 179                         return "OSM_1000";
 180                 case QETH_CARD_TYPE_OSX:
 181                         return "OSX_10GIG";
 182                 default:
 183                         return "unknown";
 184                 }
 185         }
 186         return "n/a";
 187 }
 188
 189 void qeth_set_recovery_task(struct qeth_card *card)
 190 {
 191         card->recovery_task = current;
 192 }
 193 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 194
 195 void qeth_clear_recovery_task(struct qeth_card *card)
 196 {
 197         card->recovery_task = NULL;
 198 }
 199 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 200
 201 static bool qeth_is_recovery_task(const struct qeth_card *card)
 202 {
 203         return card->recovery_task == current;
 204 }
 205
 206 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 207                          int clear_start_mask)
 208 {
 209         unsigned long flags;
 210
 211         spin_lock_irqsave(&card->thread_mask_lock, flags);
 212         card->thread_allowed_mask = threads;
 213         if (clear_start_mask)
 214                 card->thread_start_mask &= threads;
 215         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 216         wake_up(&card->wait_q);
 217 }
 218 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 219
 220 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 221 {
 222         unsigned long flags;
 223         int rc = 0;
 224
 225         spin_lock_irqsave(&card->thread_mask_lock, flags);
 226         rc = (card->thread_running_mask & threads);
 227         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 228         return rc;
 229 }
 230 EXPORT_SYMBOL_GPL(qeth_threads_running);
 231
 232 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 233 {
 234         if (qeth_is_recovery_task(card))
 235                 return 0;
 236         return wait_event_interruptible(card->wait_q,
 237                         qeth_threads_running(card, threads) == 0);
 238 }
 239 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 240
 241 void qeth_clear_working_pool_list(struct qeth_card *card)
 242 {
 243         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 244
 245         QETH_CARD_TEXT(card, 5, "clwrklst");
 246         list_for_each_entry_safe(pool_entry, tmp,
 247                             &card->qdio.in_buf_pool.entry_list, list){
 248                         list_del(&pool_entry->list);
 249         }
 250 }
 251 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 252
 253 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 254 {
 255         struct qeth_buffer_pool_entry *pool_entry;
 256         void *ptr;
 257         int i, j;
 258
 259         QETH_CARD_TEXT(card, 5, "alocpool");
 260         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 261                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 262                 if (!pool_entry) {
 263                         qeth_free_buffer_pool(card);
 264                         return -ENOMEM;
 265                 }
 266                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 267                         ptr = (void *) __get_free_page(GFP_KERNEL);
 268                         if (!ptr) {
 269                                 while (j > 0)
 270                                         free_page((unsigned long)
 271                                                   pool_entry->elements[--j]);
 272                                 kfree(pool_entry);
 273                                 qeth_free_buffer_pool(card);
 274                                 return -ENOMEM;
 275                         }
 276                         pool_entry->elements[j] = ptr;
 277                 }
 278                 list_add(&pool_entry->init_list,
 279                          &card->qdio.init_pool.entry_list);
 280         }
 281         return 0;
 282 }
 283
 284 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 285 {
 286         QETH_CARD_TEXT(card, 2, "realcbp");
 287
 288         if ((card->state != CARD_STATE_DOWN) &&
 289             (card->state != CARD_STATE_RECOVER))
 290                 return -EPERM;
 291
 292         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 293         qeth_clear_working_pool_list(card);
 294         qeth_free_buffer_pool(card);
 295         card->qdio.in_buf_pool.buf_count = bufcnt;
 296         card->qdio.init_pool.buf_count = bufcnt;
 297         return qeth_alloc_buffer_pool(card);
 298 }
 299 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 300
 301 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 302 {
 303         if (!q)
 304                 return;
 305
 306         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 307         kfree(q);
 308 }
 309
 310 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 311 {
 312         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 313         int i;
 314
 315         if (!q)
 316                 return NULL;
 317
 318         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 319                 kfree(q);
 320                 return NULL;
 321         }
 322
 323         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 324                 q->bufs[i].buffer = q->qdio_bufs[i];
 325
 326         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 327         return q;
 328 }
 329
 330 static inline int qeth_cq_init(struct qeth_card *card)
 331 {
 332         int rc;
 333
 334         if (card->options.cq == QETH_CQ_ENABLED) {
 335                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 336                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 337                                    QDIO_MAX_BUFFERS_PER_Q);
 338                 card->qdio.c_q->next_buf_to_init = 127;
 339                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 340                              card->qdio.no_in_queues - 1, 0,
 341                              127);
 342                 if (rc) {
 343                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 344                         goto out;
 345                 }
 346         }
 347         rc = 0;
 348 out:
 349         return rc;
 350 }
 351
 352 static inline int qeth_alloc_cq(struct qeth_card *card)
 353 {
 354         int rc;
 355
 356         if (card->options.cq == QETH_CQ_ENABLED) {
 357                 int i;
 358                 struct qdio_outbuf_state *outbuf_states;
 359
 360                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 361                 card->qdio.c_q = qeth_alloc_qdio_queue();
 362                 if (!card->qdio.c_q) {
 363                         rc = -1;
 364                         goto kmsg_out;
 365                 }
 366                 card->qdio.no_in_queues = 2;
 367                 card->qdio.out_bufstates =
 368                         kzalloc(card->qdio.no_out_queues *
 369                                 QDIO_MAX_BUFFERS_PER_Q *
 370                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 371                 outbuf_states = card->qdio.out_bufstates;
 372                 if (outbuf_states == NULL) {
 373                         rc = -1;
 374                         goto free_cq_out;
 375                 }
 376                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 377                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 378                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 379                 }
 380         } else {
 381                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 382                 card->qdio.c_q = NULL;
 383                 card->qdio.no_in_queues = 1;
 384         }
 385         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 386         rc = 0;
 387 out:
 388         return rc;
 389 free_cq_out:
 390         qeth_free_qdio_queue(card->qdio.c_q);
 391         card->qdio.c_q = NULL;
 392 kmsg_out:
 393         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 394         goto out;
 395 }
 396
 397 static inline void qeth_free_cq(struct qeth_card *card)
 398 {
 399         if (card->qdio.c_q) {
 400                 --card->qdio.no_in_queues;
 401                 qeth_free_qdio_queue(card->qdio.c_q);
 402                 card->qdio.c_q = NULL;
 403         }
 404         kfree(card->qdio.out_bufstates);
 405         card->qdio.out_bufstates = NULL;
 406 }
 407
 408 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 409         int delayed) {
 410         enum iucv_tx_notify n;
 411
 412         switch (sbalf15) {
 413         case 0:
 414                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 415                 break;
 416         case 4:
 417         case 16:
 418         case 17:
 419         case 18:
 420                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 421                         TX_NOTIFY_UNREACHABLE;
 422                 break;
 423         default:
 424                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 425                         TX_NOTIFY_GENERALERROR;
 426                 break;
 427         }
 428
 429         return n;
 430 }
 431
 432 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 433         int bidx, int forced_cleanup)
 434 {
 435         if (q->card->options.cq != QETH_CQ_ENABLED)
 436                 return;
 437
 438         if (q->bufs[bidx]->next_pending != NULL) {
 439                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 440                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 441
 442                 while (c) {
 443                         if (forced_cleanup ||
 444                             atomic_read(&c->state) ==
 445                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 446                                 struct qeth_qdio_out_buffer *f = c;
 447                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 448                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 449                                 /* release here to avoid interleaving between
 450                                    outbound tasklet and inbound tasklet
 451                                    regarding notifications and lifecycle */
 452                                 qeth_release_skbs(c);
 453
 454                                 c = f->next_pending;
 455                                 WARN_ON_ONCE(head->next_pending != f);
 456                                 head->next_pending = c;
 457                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 458                         } else {
 459                                 head = c;
 460                                 c = c->next_pending;
 461                         }
 462
 463                 }
 464         }
 465         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 466                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 467                 /* for recovery situations */
 468                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 469                 qeth_init_qdio_out_buf(q, bidx);
 470                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 471         }
 472 }
 473
 474
 475 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 476                 unsigned long phys_aob_addr) {
 477         struct qaob *aob;
 478         struct qeth_qdio_out_buffer *buffer;
 479         enum iucv_tx_notify notification;
 480
 481         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 482         QETH_CARD_TEXT(card, 5, "haob");
 483         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 484         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 485         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 486
 487         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 488                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 489                 notification = TX_NOTIFY_OK;
 490         } else {
 491                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 492                                                         QETH_QDIO_BUF_PENDING);
 493                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 494                 notification = TX_NOTIFY_DELAYED_OK;
 495         }
 496
 497         if (aob->aorc != 0)  {
 498                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 499                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 500         }
 501         qeth_notify_skbs(buffer->q, buffer, notification);
 502
 503         buffer->aob = NULL;
 504         qeth_clear_output_buffer(buffer->q, buffer,
 505                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 506
 507         /* from here on: do not touch buffer anymore */
 508         qdio_release_aob(aob);
 509 }
 510
 511 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 512 {
 513         return card->options.cq == QETH_CQ_ENABLED &&
 514             card->qdio.c_q != NULL &&
 515             queue != 0 &&
 516             queue == card->qdio.no_in_queues - 1;
 517 }
 518
 519
 520 static int qeth_issue_next_read(struct qeth_card *card)
 521 {
 522         int rc;
 523         struct qeth_cmd_buffer *iob;
 524
 525         QETH_CARD_TEXT(card, 5, "issnxrd");
 526         if (card->read.state != CH_STATE_UP)
 527                 return -EIO;
 528         iob = qeth_get_buffer(&card->read);
 529         if (!iob) {
 530                 dev_warn(&card->gdev->dev, "The qeth device driver "
 531                         "failed to recover an error on the device\n");
 532                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 533                         "available\n", dev_name(&card->gdev->dev));
 534                 return -ENOMEM;
 535         }
 536         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 537         QETH_CARD_TEXT(card, 6, "noirqpnd");
 538         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 539                               (addr_t) iob, 0, 0);
 540         if (rc) {
 541                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 542                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 543                 atomic_set(&card->read.irq_pending, 0);
 544                 card->read_or_write_problem = 1;
 545                 qeth_schedule_recovery(card);
 546                 wake_up(&card->wait_q);
 547         }
 548         return rc;
 549 }
 550
 551 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 552 {
 553         struct qeth_reply *reply;
 554
 555         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 556         if (reply) {
 557                 atomic_set(&reply->refcnt, 1);
 558                 atomic_set(&reply->received, 0);
 559                 reply->card = card;
 560         }
 561         return reply;
 562 }
 563
 564 static void qeth_get_reply(struct qeth_reply *reply)
 565 {
 566         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 567         atomic_inc(&reply->refcnt);
 568 }
 569
 570 static void qeth_put_reply(struct qeth_reply *reply)
 571 {
 572         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 573         if (atomic_dec_and_test(&reply->refcnt))
 574                 kfree(reply);
 575 }
 576
 577 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 578                 struct qeth_card *card)
 579 {
 580         char *ipa_name;
 581         int com = cmd->hdr.command;
 582         ipa_name = qeth_get_ipa_cmd_name(com);
 583         if (rc)
 584                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 585                                 "x%X \"%s\"\n",
 586                                 ipa_name, com, dev_name(&card->gdev->dev),
 587                                 QETH_CARD_IFNAME(card), rc,
 588                                 qeth_get_ipa_msg(rc));
 589         else
 590                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 591                                 ipa_name, com, dev_name(&card->gdev->dev),
 592                                 QETH_CARD_IFNAME(card));
 593 }
 594
 595 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 596                 struct qeth_cmd_buffer *iob)
 597 {
 598         struct qeth_ipa_cmd *cmd = NULL;
 599
 600         QETH_CARD_TEXT(card, 5, "chkipad");
 601         if (IS_IPA(iob->data)) {
 602                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 603                 if (IS_IPA_REPLY(cmd)) {
 604                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 605                             cmd->hdr.command != IPA_CMD_DELCCID &&
 606                             cmd->hdr.command != IPA_CMD_MODCCID &&
 607                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 608                                 qeth_issue_ipa_msg(cmd,
 609                                                 cmd->hdr.return_code, card);
 610                         return cmd;
 611                 } else {
 612                         switch (cmd->hdr.command) {
 613                         case IPA_CMD_STOPLAN:
 614                                 if (cmd->hdr.return_code ==
 615                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 616                                         dev_err(&card->gdev->dev,
 617                                            "Interface %s is down because the "
 618                                            "adjacent port is no longer in "
 619                                            "reflective relay mode\n",
 620                                            QETH_CARD_IFNAME(card));
 621                                         qeth_close_dev(card);
 622                                 } else {
 623                                         dev_warn(&card->gdev->dev,
 624                                            "The link for interface %s on CHPID"
 625                                            " 0x%X failed\n",
 626                                            QETH_CARD_IFNAME(card),
 627                                            card->info.chpid);
 628                                         qeth_issue_ipa_msg(cmd,
 629                                                 cmd->hdr.return_code, card);
 630                                 }
 631                                 card->lan_online = 0;
 632                                 if (card->dev && netif_carrier_ok(card->dev))
 633                                         netif_carrier_off(card->dev);
 634                                 return NULL;
 635                         case IPA_CMD_STARTLAN:
 636                                 dev_info(&card->gdev->dev,
 637                                            "The link for %s on CHPID 0x%X has"
 638                                            " been restored\n",
 639                                            QETH_CARD_IFNAME(card),
 640                                            card->info.chpid);
 641                                 netif_carrier_on(card->dev);
 642                                 card->lan_online = 1;
 643                                 if (card->info.hwtrap)
 644                                         card->info.hwtrap = 2;
 645                                 qeth_schedule_recovery(card);
 646                                 return NULL;
 647                         case IPA_CMD_SETBRIDGEPORT_IQD:
 648                         case IPA_CMD_SETBRIDGEPORT_OSA:
 649                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 650                                 if (card->discipline->control_event_handler
 651                                                                 (card, cmd))
 652                                         return cmd;
 653                                 else
 654                                         return NULL;
 655                         case IPA_CMD_MODCCID:
 656                                 return cmd;
 657                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 658                                 QETH_CARD_TEXT(card, 3, "irla");
 659                                 break;
 660                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 661                                 QETH_CARD_TEXT(card, 3, "urla");
 662                                 break;
 663                         default:
 664                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 665                                            "but not a reply!\n");
 666                                 break;
 667                         }
 668                 }
 669         }
 670         return cmd;
 671 }
 672
 673 void qeth_clear_ipacmd_list(struct qeth_card *card)
 674 {
 675         struct qeth_reply *reply, *r;
 676         unsigned long flags;
 677
 678         QETH_CARD_TEXT(card, 4, "clipalst");
 679
 680         spin_lock_irqsave(&card->lock, flags);
 681         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 682                 qeth_get_reply(reply);
 683                 reply->rc = -EIO;
 684                 atomic_inc(&reply->received);
 685                 list_del_init(&reply->list);
 686                 wake_up(&reply->wait_q);
 687                 qeth_put_reply(reply);
 688         }
 689         spin_unlock_irqrestore(&card->lock, flags);
 690         atomic_set(&card->write.irq_pending, 0);
 691 }
 692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 693
 694 static int qeth_check_idx_response(struct qeth_card *card,
 695         unsigned char *buffer)
 696 {
 697         if (!buffer)
 698                 return 0;
 699
 700         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 701         if ((buffer[2] & 0xc0) == 0xc0) {
 702                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 703                            "with cause code 0x%02x%s\n",
 704                            buffer[4],
 705                            ((buffer[4] == 0x22) ?
 706                             " -- try another portname" : ""));
 707                 QETH_CARD_TEXT(card, 2, "ckidxres");
 708                 QETH_CARD_TEXT(card, 2, " idxterm");
 709                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 710                 if (buffer[4] == 0xf6) {
 711                         dev_err(&card->gdev->dev,
 712                         "The qeth device is not configured "
 713                         "for the OSI layer required by z/VM\n");
 714                         return -EPERM;
 715                 }
 716                 return -EIO;
 717         }
 718         return 0;
 719 }
 720
 721 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 722 {
 723         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 724                 dev_get_drvdata(&cdev->dev))->dev);
 725         return card;
 726 }
 727
 728 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 729                 __u32 len)
 730 {
 731         struct qeth_card *card;
 732
 733         card = CARD_FROM_CDEV(channel->ccwdev);
 734         QETH_CARD_TEXT(card, 4, "setupccw");
 735         if (channel == &card->read)
 736                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 737         else
 738                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 739         channel->ccw.count = len;
 740         channel->ccw.cda = (__u32) __pa(iob);
 741 }
 742
 743 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 744 {
 745         __u8 index;
 746
 747         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 748         index = channel->io_buf_no;
 749         do {
 750                 if (channel->iob[index].state == BUF_STATE_FREE) {
 751                         channel->iob[index].state = BUF_STATE_LOCKED;
 752                         channel->io_buf_no = (channel->io_buf_no + 1) %
 753                                 QETH_CMD_BUFFER_NO;
 754                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 755                         return channel->iob + index;
 756                 }
 757                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 758         } while (index != channel->io_buf_no);
 759
 760         return NULL;
 761 }
 762
 763 void qeth_release_buffer(struct qeth_channel *channel,
 764                 struct qeth_cmd_buffer *iob)
 765 {
 766         unsigned long flags;
 767
 768         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 769         spin_lock_irqsave(&channel->iob_lock, flags);
 770         memset(iob->data, 0, QETH_BUFSIZE);
 771         iob->state = BUF_STATE_FREE;
 772         iob->callback = qeth_send_control_data_cb;
 773         iob->rc = 0;
 774         spin_unlock_irqrestore(&channel->iob_lock, flags);
 775         wake_up(&channel->wait_q);
 776 }
 777 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 778
 779 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 780 {
 781         struct qeth_cmd_buffer *buffer = NULL;
 782         unsigned long flags;
 783
 784         spin_lock_irqsave(&channel->iob_lock, flags);
 785         buffer = __qeth_get_buffer(channel);
 786         spin_unlock_irqrestore(&channel->iob_lock, flags);
 787         return buffer;
 788 }
 789
 790 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 791 {
 792         struct qeth_cmd_buffer *buffer;
 793         wait_event(channel->wait_q,
 794                    ((buffer = qeth_get_buffer(channel)) != NULL));
 795         return buffer;
 796 }
 797 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 798
 799 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 800 {
 801         int cnt;
 802
 803         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 804                 qeth_release_buffer(channel, &channel->iob[cnt]);
 805         channel->buf_no = 0;
 806         channel->io_buf_no = 0;
 807 }
 808 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 809
 810 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 811                   struct qeth_cmd_buffer *iob)
 812 {
 813         struct qeth_card *card;
 814         struct qeth_reply *reply, *r;
 815         struct qeth_ipa_cmd *cmd;
 816         unsigned long flags;
 817         int keep_reply;
 818         int rc = 0;
 819
 820         card = CARD_FROM_CDEV(channel->ccwdev);
 821         QETH_CARD_TEXT(card, 4, "sndctlcb");
 822         rc = qeth_check_idx_response(card, iob->data);
 823         switch (rc) {
 824         case 0:
 825                 break;
 826         case -EIO:
 827                 qeth_clear_ipacmd_list(card);
 828                 qeth_schedule_recovery(card);
 829                 /* fall through */
 830         default:
 831                 goto out;
 832         }
 833
 834         cmd = qeth_check_ipa_data(card, iob);
 835         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 836                 goto out;
 837         /*in case of OSN : check if cmd is set */
 838         if (card->info.type == QETH_CARD_TYPE_OSN &&
 839             cmd &&
 840             cmd->hdr.command != IPA_CMD_STARTLAN &&
 841             card->osn_info.assist_cb != NULL) {
 842                 card->osn_info.assist_cb(card->dev, cmd);
 843                 goto out;
 844         }
 845
 846         spin_lock_irqsave(&card->lock, flags);
 847         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 848                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 849                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 850                         qeth_get_reply(reply);
 851                         list_del_init(&reply->list);
 852                         spin_unlock_irqrestore(&card->lock, flags);
 853                         keep_reply = 0;
 854                         if (reply->callback != NULL) {
 855                                 if (cmd) {
 856                                         reply->offset = (__u16)((char *)cmd -
 857                                                         (char *)iob->data);
 858                                         keep_reply = reply->callback(card,
 859                                                         reply,
 860                                                         (unsigned long)cmd);
 861                                 } else
 862                                         keep_reply = reply->callback(card,
 863                                                         reply,
 864                                                         (unsigned long)iob);
 865                         }
 866                         if (cmd)
 867                                 reply->rc = (u16) cmd->hdr.return_code;
 868                         else if (iob->rc)
 869                                 reply->rc = iob->rc;
 870                         if (keep_reply) {
 871                                 spin_lock_irqsave(&card->lock, flags);
 872                                 list_add_tail(&reply->list,
 873                                               &card->cmd_waiter_list);
 874                                 spin_unlock_irqrestore(&card->lock, flags);
 875                         } else {
 876                                 atomic_inc(&reply->received);
 877                                 wake_up(&reply->wait_q);
 878                         }
 879                         qeth_put_reply(reply);
 880                         goto out;
 881                 }
 882         }
 883         spin_unlock_irqrestore(&card->lock, flags);
 884 out:
 885         memcpy(&card->seqno.pdu_hdr_ack,
 886                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 887                 QETH_SEQ_NO_LENGTH);
 888         qeth_release_buffer(channel, iob);
 889 }
 890
 891 static int qeth_setup_channel(struct qeth_channel *channel)
 892 {
 893         int cnt;
 894
 895         QETH_DBF_TEXT(SETUP, 2, "setupch");
 896         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 897                 channel->iob[cnt].data =
 898                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 899                 if (channel->iob[cnt].data == NULL)
 900                         break;
 901                 channel->iob[cnt].state = BUF_STATE_FREE;
 902                 channel->iob[cnt].channel = channel;
 903                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 904                 channel->iob[cnt].rc = 0;
 905         }
 906         if (cnt < QETH_CMD_BUFFER_NO) {
 907                 while (cnt-- > 0)
 908                         kfree(channel->iob[cnt].data);
 909                 return -ENOMEM;
 910         }
 911         channel->buf_no = 0;
 912         channel->io_buf_no = 0;
 913         atomic_set(&channel->irq_pending, 0);
 914         spin_lock_init(&channel->iob_lock);
 915
 916         init_waitqueue_head(&channel->wait_q);
 917         return 0;
 918 }
 919
 920 static int qeth_set_thread_start_bit(struct qeth_card *card,
 921                 unsigned long thread)
 922 {
 923         unsigned long flags;
 924
 925         spin_lock_irqsave(&card->thread_mask_lock, flags);
 926         if (!(card->thread_allowed_mask & thread) ||
 927               (card->thread_start_mask & thread)) {
 928                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 929                 return -EPERM;
 930         }
 931         card->thread_start_mask |= thread;
 932         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 933         return 0;
 934 }
 935
 936 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 937 {
 938         unsigned long flags;
 939
 940         spin_lock_irqsave(&card->thread_mask_lock, flags);
 941         card->thread_start_mask &= ~thread;
 942         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 943         wake_up(&card->wait_q);
 944 }
 945 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 946
 947 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 948 {
 949         unsigned long flags;
 950
 951         spin_lock_irqsave(&card->thread_mask_lock, flags);
 952         card->thread_running_mask &= ~thread;
 953         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 954         wake_up(&card->wait_q);
 955 }
 956 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 957
 958 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 959 {
 960         unsigned long flags;
 961         int rc = 0;
 962
 963         spin_lock_irqsave(&card->thread_mask_lock, flags);
 964         if (card->thread_start_mask & thread) {
 965                 if ((card->thread_allowed_mask & thread) &&
 966                     !(card->thread_running_mask & thread)) {
 967                         rc = 1;
 968                         card->thread_start_mask &= ~thread;
 969                         card->thread_running_mask |= thread;
 970                 } else
 971                         rc = -EPERM;
 972         }
 973         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 974         return rc;
 975 }
 976
 977 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 978 {
 979         int rc = 0;
 980
 981         wait_event(card->wait_q,
 982                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 983         return rc;
 984 }
 985 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 986
 987 void qeth_schedule_recovery(struct qeth_card *card)
 988 {
 989         QETH_CARD_TEXT(card, 2, "startrec");
 990         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 991                 schedule_work(&card->kernel_thread_starter);
 992 }
 993 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 994
 995 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 996 {
 997         int dstat, cstat;
 998         char *sense;
 999         struct qeth_card *card;
1000
1001         sense = (char *) irb->ecw;
1002         cstat = irb->scsw.cmd.cstat;
1003         dstat = irb->scsw.cmd.dstat;
1004         card = CARD_FROM_CDEV(cdev);
1005
1006         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1007                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1008                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1009                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1010                 dev_warn(&cdev->dev, "The qeth device driver "
1011                         "failed to recover an error on the device\n");
1012                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1013                         dev_name(&cdev->dev), dstat, cstat);
1014                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1015                                 16, 1, irb, 64, 1);
1016                 return 1;
1017         }
1018
1019         if (dstat & DEV_STAT_UNIT_CHECK) {
1020                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1021                     SENSE_RESETTING_EVENT_FLAG) {
1022                         QETH_CARD_TEXT(card, 2, "REVIND");
1023                         return 1;
1024                 }
1025                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1026                     SENSE_COMMAND_REJECT_FLAG) {
1027                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1028                         return 1;
1029                 }
1030                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1031                         QETH_CARD_TEXT(card, 2, "AFFE");
1032                         return 1;
1033                 }
1034                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1035                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1036                         return 0;
1037                 }
1038                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1039                         return 1;
1040         }
1041         return 0;
1042 }
1043
1044 static long __qeth_check_irb_error(struct ccw_device *cdev,
1045                 unsigned long intparm, struct irb *irb)
1046 {
1047         struct qeth_card *card;
1048
1049         card = CARD_FROM_CDEV(cdev);
1050
1051         if (!card || !IS_ERR(irb))
1052                 return 0;
1053
1054         switch (PTR_ERR(irb)) {
1055         case -EIO:
1056                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1057                         dev_name(&cdev->dev));
1058                 QETH_CARD_TEXT(card, 2, "ckirberr");
1059                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1060                 break;
1061         case -ETIMEDOUT:
1062                 dev_warn(&cdev->dev, "A hardware operation timed out"
1063                         " on the device\n");
1064                 QETH_CARD_TEXT(card, 2, "ckirberr");
1065                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1066                 if (intparm == QETH_RCD_PARM) {
1067                         if (card->data.ccwdev == cdev) {
1068                                 card->data.state = CH_STATE_DOWN;
1069                                 wake_up(&card->wait_q);
1070                         }
1071                 }
1072                 break;
1073         default:
1074                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1075                         dev_name(&cdev->dev), PTR_ERR(irb));
1076                 QETH_CARD_TEXT(card, 2, "ckirberr");
1077                 QETH_CARD_TEXT(card, 2, "  rc???");
1078         }
1079         return PTR_ERR(irb);
1080 }
1081
1082 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1083                 struct irb *irb)
1084 {
1085         int rc;
1086         int cstat, dstat;
1087         struct qeth_cmd_buffer *buffer;
1088         struct qeth_channel *channel;
1089         struct qeth_card *card;
1090         struct qeth_cmd_buffer *iob;
1091         __u8 index;
1092
1093         if (__qeth_check_irb_error(cdev, intparm, irb))
1094                 return;
1095         cstat = irb->scsw.cmd.cstat;
1096         dstat = irb->scsw.cmd.dstat;
1097
1098         card = CARD_FROM_CDEV(cdev);
1099         if (!card)
1100                 return;
1101
1102         QETH_CARD_TEXT(card, 5, "irq");
1103
1104         if (card->read.ccwdev == cdev) {
1105                 channel = &card->read;
1106                 QETH_CARD_TEXT(card, 5, "read");
1107         } else if (card->write.ccwdev == cdev) {
1108                 channel = &card->write;
1109                 QETH_CARD_TEXT(card, 5, "write");
1110         } else {
1111                 channel = &card->data;
1112                 QETH_CARD_TEXT(card, 5, "data");
1113         }
1114         atomic_set(&channel->irq_pending, 0);
1115
1116         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1117                 channel->state = CH_STATE_STOPPED;
1118
1119         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1120                 channel->state = CH_STATE_HALTED;
1121
1122         /*let's wake up immediately on data channel*/
1123         if ((channel == &card->data) && (intparm != 0) &&
1124             (intparm != QETH_RCD_PARM))
1125                 goto out;
1126
1127         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1128                 QETH_CARD_TEXT(card, 6, "clrchpar");
1129                 /* we don't have to handle this further */
1130                 intparm = 0;
1131         }
1132         if (intparm == QETH_HALT_CHANNEL_PARM) {
1133                 QETH_CARD_TEXT(card, 6, "hltchpar");
1134                 /* we don't have to handle this further */
1135                 intparm = 0;
1136         }
1137         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1138             (dstat & DEV_STAT_UNIT_CHECK) ||
1139             (cstat)) {
1140                 if (irb->esw.esw0.erw.cons) {
1141                         dev_warn(&channel->ccwdev->dev,
1142                                 "The qeth device driver failed to recover "
1143                                 "an error on the device\n");
1144                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1145                                 "0x%X dstat 0x%X\n",
1146                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1147                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1148                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1149                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1150                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1151                 }
1152                 if (intparm == QETH_RCD_PARM) {
1153                         channel->state = CH_STATE_DOWN;
1154                         goto out;
1155                 }
1156                 rc = qeth_get_problem(cdev, irb);
1157                 if (rc) {
1158                         qeth_clear_ipacmd_list(card);
1159                         qeth_schedule_recovery(card);
1160                         goto out;
1161                 }
1162         }
1163
1164         if (intparm == QETH_RCD_PARM) {
1165                 channel->state = CH_STATE_RCD_DONE;
1166                 goto out;
1167         }
1168         if (intparm) {
1169                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1170                 buffer->state = BUF_STATE_PROCESSED;
1171         }
1172         if (channel == &card->data)
1173                 return;
1174         if (channel == &card->read &&
1175             channel->state == CH_STATE_UP)
1176                 qeth_issue_next_read(card);
1177
1178         iob = channel->iob;
1179         index = channel->buf_no;
1180         while (iob[index].state == BUF_STATE_PROCESSED) {
1181                 if (iob[index].callback != NULL)
1182                         iob[index].callback(channel, iob + index);
1183
1184                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1185         }
1186         channel->buf_no = index;
1187 out:
1188         wake_up(&card->wait_q);
1189         return;
1190 }
1191
1192 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1193                 struct qeth_qdio_out_buffer *buf,
1194                 enum iucv_tx_notify notification)
1195 {
1196         struct sk_buff *skb;
1197
1198         if (skb_queue_empty(&buf->skb_list))
1199                 goto out;
1200         skb = skb_peek(&buf->skb_list);
1201         while (skb) {
1202                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1203                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1204                 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1205                         if (skb->sk) {
1206                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1207                                 iucv->sk_txnotify(skb, notification);
1208                         }
1209                 }
1210                 if (skb_queue_is_last(&buf->skb_list, skb))
1211                         skb = NULL;
1212                 else
1213                         skb = skb_queue_next(&buf->skb_list, skb);
1214         }
1215 out:
1216         return;
1217 }
1218
1219 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1220 {
1221         struct sk_buff *skb;
1222         struct iucv_sock *iucv;
1223         int notify_general_error = 0;
1224
1225         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1226                 notify_general_error = 1;
1227
1228         /* release may never happen from within CQ tasklet scope */
1229         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1230
1231         skb = skb_dequeue(&buf->skb_list);
1232         while (skb) {
1233                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1234                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1235                 if (notify_general_error &&
1236                     be16_to_cpu(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.performance_stats = 0;
1400         card->options.rx_sg_cb = QETH_RX_SG_CB;
1401         card->options.isolation = ISOLATION_MODE_NONE;
1402         card->options.cq = QETH_CQ_DISABLED;
1403 }
1404
1405 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1406 {
1407         unsigned long flags;
1408         int rc = 0;
1409
1410         spin_lock_irqsave(&card->thread_mask_lock, flags);
1411         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1412                         (u8) card->thread_start_mask,
1413                         (u8) card->thread_allowed_mask,
1414                         (u8) card->thread_running_mask);
1415         rc = (card->thread_start_mask & thread);
1416         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1417         return rc;
1418 }
1419
1420 static void qeth_start_kernel_thread(struct work_struct *work)
1421 {
1422         struct task_struct *ts;
1423         struct qeth_card *card = container_of(work, struct qeth_card,
1424                                         kernel_thread_starter);
1425         QETH_CARD_TEXT(card , 2, "strthrd");
1426
1427         if (card->read.state != CH_STATE_UP &&
1428             card->write.state != CH_STATE_UP)
1429                 return;
1430         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1431                 ts = kthread_run(card->discipline->recover, (void *)card,
1432                                 "qeth_recover");
1433                 if (IS_ERR(ts)) {
1434                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1435                         qeth_clear_thread_running_bit(card,
1436                                 QETH_RECOVER_THREAD);
1437                 }
1438         }
1439 }
1440
1441 static void qeth_buffer_reclaim_work(struct work_struct *);
1442 static int qeth_setup_card(struct qeth_card *card)
1443 {
1444
1445         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1446         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1447
1448         card->read.state  = CH_STATE_DOWN;
1449         card->write.state = CH_STATE_DOWN;
1450         card->data.state  = CH_STATE_DOWN;
1451         card->state = CARD_STATE_DOWN;
1452         card->lan_online = 0;
1453         card->read_or_write_problem = 0;
1454         card->dev = NULL;
1455         spin_lock_init(&card->vlanlock);
1456         spin_lock_init(&card->mclock);
1457         spin_lock_init(&card->lock);
1458         spin_lock_init(&card->ip_lock);
1459         spin_lock_init(&card->thread_mask_lock);
1460         mutex_init(&card->conf_mutex);
1461         mutex_init(&card->discipline_mutex);
1462         card->thread_start_mask = 0;
1463         card->thread_allowed_mask = 0;
1464         card->thread_running_mask = 0;
1465         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1466         INIT_LIST_HEAD(&card->cmd_waiter_list);
1467         init_waitqueue_head(&card->wait_q);
1468         /* initial options */
1469         qeth_set_intial_options(card);
1470         /* IP address takeover */
1471         INIT_LIST_HEAD(&card->ipato.entries);
1472         card->ipato.enabled = 0;
1473         card->ipato.invert4 = 0;
1474         card->ipato.invert6 = 0;
1475         /* init QDIO stuff */
1476         qeth_init_qdio_info(card);
1477         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1478         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1479         return 0;
1480 }
1481
1482 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1483 {
1484         struct qeth_card *card = container_of(slr, struct qeth_card,
1485                                         qeth_service_level);
1486         if (card->info.mcl_level[0])
1487                 seq_printf(m, "qeth: %s firmware level %s\n",
1488                         CARD_BUS_ID(card), card->info.mcl_level);
1489 }
1490
1491 static struct qeth_card *qeth_alloc_card(void)
1492 {
1493         struct qeth_card *card;
1494
1495         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1496         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1497         if (!card)
1498                 goto out;
1499         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1500         if (qeth_setup_channel(&card->read))
1501                 goto out_ip;
1502         if (qeth_setup_channel(&card->write))
1503                 goto out_channel;
1504         card->options.layer2 = -1;
1505         card->qeth_service_level.seq_print = qeth_core_sl_print;
1506         register_service_level(&card->qeth_service_level);
1507         return card;
1508
1509 out_channel:
1510         qeth_clean_channel(&card->read);
1511 out_ip:
1512         kfree(card);
1513 out:
1514         return NULL;
1515 }
1516
1517 static int qeth_determine_card_type(struct qeth_card *card)
1518 {
1519         int i = 0;
1520
1521         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1522
1523         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1524         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1525         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1526                 if ((CARD_RDEV(card)->id.dev_type ==
1527                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1528                     (CARD_RDEV(card)->id.dev_model ==
1529                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1530                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1531                         card->qdio.no_out_queues =
1532                                 known_devices[i][QETH_QUEUE_NO_IND];
1533                         card->qdio.no_in_queues = 1;
1534                         card->info.is_multicast_different =
1535                                 known_devices[i][QETH_MULTICAST_IND];
1536                         qeth_update_from_chp_desc(card);
1537                         return 0;
1538                 }
1539                 i++;
1540         }
1541         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1542         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1543                 "unknown type\n");
1544         return -ENOENT;
1545 }
1546
1547 static int qeth_clear_channel(struct qeth_channel *channel)
1548 {
1549         unsigned long flags;
1550         struct qeth_card *card;
1551         int rc;
1552
1553         card = CARD_FROM_CDEV(channel->ccwdev);
1554         QETH_CARD_TEXT(card, 3, "clearch");
1555         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1556         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1557         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1558
1559         if (rc)
1560                 return rc;
1561         rc = wait_event_interruptible_timeout(card->wait_q,
1562                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1563         if (rc == -ERESTARTSYS)
1564                 return rc;
1565         if (channel->state != CH_STATE_STOPPED)
1566                 return -ETIME;
1567         channel->state = CH_STATE_DOWN;
1568         return 0;
1569 }
1570
1571 static int qeth_halt_channel(struct qeth_channel *channel)
1572 {
1573         unsigned long flags;
1574         struct qeth_card *card;
1575         int rc;
1576
1577         card = CARD_FROM_CDEV(channel->ccwdev);
1578         QETH_CARD_TEXT(card, 3, "haltch");
1579         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1580         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1581         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1582
1583         if (rc)
1584                 return rc;
1585         rc = wait_event_interruptible_timeout(card->wait_q,
1586                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1587         if (rc == -ERESTARTSYS)
1588                 return rc;
1589         if (channel->state != CH_STATE_HALTED)
1590                 return -ETIME;
1591         return 0;
1592 }
1593
1594 static int qeth_halt_channels(struct qeth_card *card)
1595 {
1596         int rc1 = 0, rc2 = 0, rc3 = 0;
1597
1598         QETH_CARD_TEXT(card, 3, "haltchs");
1599         rc1 = qeth_halt_channel(&card->read);
1600         rc2 = qeth_halt_channel(&card->write);
1601         rc3 = qeth_halt_channel(&card->data);
1602         if (rc1)
1603                 return rc1;
1604         if (rc2)
1605                 return rc2;
1606         return rc3;
1607 }
1608
1609 static int qeth_clear_channels(struct qeth_card *card)
1610 {
1611         int rc1 = 0, rc2 = 0, rc3 = 0;
1612
1613         QETH_CARD_TEXT(card, 3, "clearchs");
1614         rc1 = qeth_clear_channel(&card->read);
1615         rc2 = qeth_clear_channel(&card->write);
1616         rc3 = qeth_clear_channel(&card->data);
1617         if (rc1)
1618                 return rc1;
1619         if (rc2)
1620                 return rc2;
1621         return rc3;
1622 }
1623
1624 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1625 {
1626         int rc = 0;
1627
1628         QETH_CARD_TEXT(card, 3, "clhacrd");
1629
1630         if (halt)
1631                 rc = qeth_halt_channels(card);
1632         if (rc)
1633                 return rc;
1634         return qeth_clear_channels(card);
1635 }
1636
1637 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1638 {
1639         int rc = 0;
1640
1641         QETH_CARD_TEXT(card, 3, "qdioclr");
1642         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1643                 QETH_QDIO_CLEANING)) {
1644         case QETH_QDIO_ESTABLISHED:
1645                 if (card->info.type == QETH_CARD_TYPE_IQD)
1646                         rc = qdio_shutdown(CARD_DDEV(card),
1647                                 QDIO_FLAG_CLEANUP_USING_HALT);
1648                 else
1649                         rc = qdio_shutdown(CARD_DDEV(card),
1650                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1651                 if (rc)
1652                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1653                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1654                 break;
1655         case QETH_QDIO_CLEANING:
1656                 return rc;
1657         default:
1658                 break;
1659         }
1660         rc = qeth_clear_halt_card(card, use_halt);
1661         if (rc)
1662                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1663         card->state = CARD_STATE_DOWN;
1664         return rc;
1665 }
1666 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1667
1668 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1669                                int *length)
1670 {
1671         struct ciw *ciw;
1672         char *rcd_buf;
1673         int ret;
1674         struct qeth_channel *channel = &card->data;
1675         unsigned long flags;
1676
1677         /*
1678          * scan for RCD command in extended SenseID data
1679          */
1680         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1681         if (!ciw || ciw->cmd == 0)
1682                 return -EOPNOTSUPP;
1683         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1684         if (!rcd_buf)
1685                 return -ENOMEM;
1686
1687         channel->ccw.cmd_code = ciw->cmd;
1688         channel->ccw.cda = (__u32) __pa(rcd_buf);
1689         channel->ccw.count = ciw->count;
1690         channel->ccw.flags = CCW_FLAG_SLI;
1691         channel->state = CH_STATE_RCD;
1692         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1693         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1694                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1695                                        QETH_RCD_TIMEOUT);
1696         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1697         if (!ret)
1698                 wait_event(card->wait_q,
1699                            (channel->state == CH_STATE_RCD_DONE ||
1700                             channel->state == CH_STATE_DOWN));
1701         if (channel->state == CH_STATE_DOWN)
1702                 ret = -EIO;
1703         else
1704                 channel->state = CH_STATE_DOWN;
1705         if (ret) {
1706                 kfree(rcd_buf);
1707                 *buffer = NULL;
1708                 *length = 0;
1709         } else {
1710                 *length = ciw->count;
1711                 *buffer = rcd_buf;
1712         }
1713         return ret;
1714 }
1715
1716 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1717 {
1718         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1719         card->info.chpid = prcd[30];
1720         card->info.unit_addr2 = prcd[31];
1721         card->info.cula = prcd[63];
1722         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1723                                (prcd[0x11] == _ascebc['M']));
1724 }
1725
1726 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1727 {
1728         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1729
1730         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1731             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1732                 card->info.blkt.time_total = 0;
1733                 card->info.blkt.inter_packet = 0;
1734                 card->info.blkt.inter_packet_jumbo = 0;
1735         } else {
1736                 card->info.blkt.time_total = 250;
1737                 card->info.blkt.inter_packet = 5;
1738                 card->info.blkt.inter_packet_jumbo = 15;
1739         }
1740 }
1741
1742 static void qeth_init_tokens(struct qeth_card *card)
1743 {
1744         card->token.issuer_rm_w = 0x00010103UL;
1745         card->token.cm_filter_w = 0x00010108UL;
1746         card->token.cm_connection_w = 0x0001010aUL;
1747         card->token.ulp_filter_w = 0x0001010bUL;
1748         card->token.ulp_connection_w = 0x0001010dUL;
1749 }
1750
1751 static void qeth_init_func_level(struct qeth_card *card)
1752 {
1753         switch (card->info.type) {
1754         case QETH_CARD_TYPE_IQD:
1755                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1756                 break;
1757         case QETH_CARD_TYPE_OSD:
1758         case QETH_CARD_TYPE_OSN:
1759                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1760                 break;
1761         default:
1762                 break;
1763         }
1764 }
1765
1766 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1767                 void (*idx_reply_cb)(struct qeth_channel *,
1768                         struct qeth_cmd_buffer *))
1769 {
1770         struct qeth_cmd_buffer *iob;
1771         unsigned long flags;
1772         int rc;
1773         struct qeth_card *card;
1774
1775         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1776         card = CARD_FROM_CDEV(channel->ccwdev);
1777         iob = qeth_get_buffer(channel);
1778         if (!iob)
1779                 return -ENOMEM;
1780         iob->callback = idx_reply_cb;
1781         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1782         channel->ccw.count = QETH_BUFSIZE;
1783         channel->ccw.cda = (__u32) __pa(iob->data);
1784
1785         wait_event(card->wait_q,
1786                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1787         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1788         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1789         rc = ccw_device_start(channel->ccwdev,
1790                               &channel->ccw, (addr_t) iob, 0, 0);
1791         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1792
1793         if (rc) {
1794                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1795                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1796                 atomic_set(&channel->irq_pending, 0);
1797                 wake_up(&card->wait_q);
1798                 return rc;
1799         }
1800         rc = wait_event_interruptible_timeout(card->wait_q,
1801                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1802         if (rc == -ERESTARTSYS)
1803                 return rc;
1804         if (channel->state != CH_STATE_UP) {
1805                 rc = -ETIME;
1806                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1807                 qeth_clear_cmd_buffers(channel);
1808         } else
1809                 rc = 0;
1810         return rc;
1811 }
1812
1813 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1814                 void (*idx_reply_cb)(struct qeth_channel *,
1815                         struct qeth_cmd_buffer *))
1816 {
1817         struct qeth_card *card;
1818         struct qeth_cmd_buffer *iob;
1819         unsigned long flags;
1820         __u16 temp;
1821         __u8 tmp;
1822         int rc;
1823         struct ccw_dev_id temp_devid;
1824
1825         card = CARD_FROM_CDEV(channel->ccwdev);
1826
1827         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1828
1829         iob = qeth_get_buffer(channel);
1830         if (!iob)
1831                 return -ENOMEM;
1832         iob->callback = idx_reply_cb;
1833         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1834         channel->ccw.count = IDX_ACTIVATE_SIZE;
1835         channel->ccw.cda = (__u32) __pa(iob->data);
1836         if (channel == &card->write) {
1837                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1838                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1839                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1840                 card->seqno.trans_hdr++;
1841         } else {
1842                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1843                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1844                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1845         }
1846         tmp = ((__u8)card->info.portno) | 0x80;
1847         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1848         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1849                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1850         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1851                &card->info.func_level, sizeof(__u16));
1852         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1853         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1854         temp = (card->info.cula << 8) + card->info.unit_addr2;
1855         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1856
1857         wait_event(card->wait_q,
1858                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1859         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1860         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1861         rc = ccw_device_start(channel->ccwdev,
1862                               &channel->ccw, (addr_t) iob, 0, 0);
1863         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1864
1865         if (rc) {
1866                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1867                         rc);
1868                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1869                 atomic_set(&channel->irq_pending, 0);
1870                 wake_up(&card->wait_q);
1871                 return rc;
1872         }
1873         rc = wait_event_interruptible_timeout(card->wait_q,
1874                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1875         if (rc == -ERESTARTSYS)
1876                 return rc;
1877         if (channel->state != CH_STATE_ACTIVATING) {
1878                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1879                         " failed to recover an error on the device\n");
1880                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1881                         dev_name(&channel->ccwdev->dev));
1882                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1883                 qeth_clear_cmd_buffers(channel);
1884                 return -ETIME;
1885         }
1886         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1887 }
1888
1889 static int qeth_peer_func_level(int level)
1890 {
1891         if ((level & 0xff) == 8)
1892                 return (level & 0xff) + 0x400;
1893         if (((level >> 8) & 3) == 1)
1894                 return (level & 0xff) + 0x200;
1895         return level;
1896 }
1897
1898 static void qeth_idx_write_cb(struct qeth_channel *channel,
1899                 struct qeth_cmd_buffer *iob)
1900 {
1901         struct qeth_card *card;
1902         __u16 temp;
1903
1904         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1905
1906         if (channel->state == CH_STATE_DOWN) {
1907                 channel->state = CH_STATE_ACTIVATING;
1908                 goto out;
1909         }
1910         card = CARD_FROM_CDEV(channel->ccwdev);
1911
1912         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1913                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1914                         dev_err(&card->write.ccwdev->dev,
1915                                 "The adapter is used exclusively by another "
1916                                 "host\n");
1917                 else
1918                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1919                                 " negative reply\n",
1920                                 dev_name(&card->write.ccwdev->dev));
1921                 goto out;
1922         }
1923         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1924         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1925                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1926                         "function level mismatch (sent: 0x%x, received: "
1927                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1928                         card->info.func_level, temp);
1929                 goto out;
1930         }
1931         channel->state = CH_STATE_UP;
1932 out:
1933         qeth_release_buffer(channel, iob);
1934 }
1935
1936 static void qeth_idx_read_cb(struct qeth_channel *channel,
1937                 struct qeth_cmd_buffer *iob)
1938 {
1939         struct qeth_card *card;
1940         __u16 temp;
1941
1942         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1943         if (channel->state == CH_STATE_DOWN) {
1944                 channel->state = CH_STATE_ACTIVATING;
1945                 goto out;
1946         }
1947
1948         card = CARD_FROM_CDEV(channel->ccwdev);
1949         if (qeth_check_idx_response(card, iob->data))
1950                         goto out;
1951
1952         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1953                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1954                 case QETH_IDX_ACT_ERR_EXCL:
1955                         dev_err(&card->write.ccwdev->dev,
1956                                 "The adapter is used exclusively by another "
1957                                 "host\n");
1958                         break;
1959                 case QETH_IDX_ACT_ERR_AUTH:
1960                 case QETH_IDX_ACT_ERR_AUTH_USER:
1961                         dev_err(&card->read.ccwdev->dev,
1962                                 "Setting the device online failed because of "
1963                                 "insufficient authorization\n");
1964                         break;
1965                 default:
1966                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1967                                 " negative reply\n",
1968                                 dev_name(&card->read.ccwdev->dev));
1969                 }
1970                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1971                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1972                 goto out;
1973         }
1974
1975         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1976         if (temp != qeth_peer_func_level(card->info.func_level)) {
1977                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1978                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1979                         dev_name(&card->read.ccwdev->dev),
1980                         card->info.func_level, temp);
1981                 goto out;
1982         }
1983         memcpy(&card->token.issuer_rm_r,
1984                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1985                QETH_MPC_TOKEN_LENGTH);
1986         memcpy(&card->info.mcl_level[0],
1987                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1988         channel->state = CH_STATE_UP;
1989 out:
1990         qeth_release_buffer(channel, iob);
1991 }
1992
1993 void qeth_prepare_control_data(struct qeth_card *card, int len,
1994                 struct qeth_cmd_buffer *iob)
1995 {
1996         qeth_setup_ccw(&card->write, iob->data, len);
1997         iob->callback = qeth_release_buffer;
1998
1999         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2000                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2001         card->seqno.trans_hdr++;
2002         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2003                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2004         card->seqno.pdu_hdr++;
2005         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2006                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2007         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2008 }
2009 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2010
2011 /**
2012  * qeth_send_control_data() -   send control command to the card
2013  * @card:                       qeth_card structure pointer
2014  * @len:                        size of the command buffer
2015  * @iob:                        qeth_cmd_buffer pointer
2016  * @reply_cb:                   callback function pointer
2017  * @cb_card:                    pointer to the qeth_card structure
2018  * @cb_reply:                   pointer to the qeth_reply structure
2019  * @cb_cmd:                     pointer to the original iob for non-IPA
2020  *                              commands, or to the qeth_ipa_cmd structure
2021  *                              for the IPA commands.
2022  * @reply_param:                private pointer passed to the callback
2023  *
2024  * Returns the value of the `return_code' field of the response
2025  * block returned from the hardware, or other error indication.
2026  * Value of zero indicates successful execution of the command.
2027  *
2028  * Callback function gets called one or more times, with cb_cmd
2029  * pointing to the response returned by the hardware. Callback
2030  * function must return non-zero if more reply blocks are expected,
2031  * and zero if the last or only reply block is received. Callback
2032  * function can get the value of the reply_param pointer from the
2033  * field 'param' of the structure qeth_reply.
2034  */
2035
2036 int qeth_send_control_data(struct qeth_card *card, int len,
2037                 struct qeth_cmd_buffer *iob,
2038                 int (*reply_cb)(struct qeth_card *cb_card,
2039                                 struct qeth_reply *cb_reply,
2040                                 unsigned long cb_cmd),
2041                 void *reply_param)
2042 {
2043         int rc;
2044         unsigned long flags;
2045         struct qeth_reply *reply = NULL;
2046         unsigned long timeout, event_timeout;
2047         struct qeth_ipa_cmd *cmd;
2048
2049         QETH_CARD_TEXT(card, 2, "sendctl");
2050
2051         if (card->read_or_write_problem) {
2052                 qeth_release_buffer(iob->channel, iob);
2053                 return -EIO;
2054         }
2055         reply = qeth_alloc_reply(card);
2056         if (!reply) {
2057                 return -ENOMEM;
2058         }
2059         reply->callback = reply_cb;
2060         reply->param = reply_param;
2061         if (card->state == CARD_STATE_DOWN)
2062                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2063         else
2064                 reply->seqno = card->seqno.ipa++;
2065         init_waitqueue_head(&reply->wait_q);
2066         spin_lock_irqsave(&card->lock, flags);
2067         list_add_tail(&reply->list, &card->cmd_waiter_list);
2068         spin_unlock_irqrestore(&card->lock, flags);
2069         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2070
2071         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2072         qeth_prepare_control_data(card, len, iob);
2073
2074         if (IS_IPA(iob->data))
2075                 event_timeout = QETH_IPA_TIMEOUT;
2076         else
2077                 event_timeout = QETH_TIMEOUT;
2078         timeout = jiffies + event_timeout;
2079
2080         QETH_CARD_TEXT(card, 6, "noirqpnd");
2081         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2082         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2083                               (addr_t) iob, 0, 0);
2084         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2085         if (rc) {
2086                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2087                         "ccw_device_start rc = %i\n",
2088                         dev_name(&card->write.ccwdev->dev), rc);
2089                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2090                 spin_lock_irqsave(&card->lock, flags);
2091                 list_del_init(&reply->list);
2092                 qeth_put_reply(reply);
2093                 spin_unlock_irqrestore(&card->lock, flags);
2094                 qeth_release_buffer(iob->channel, iob);
2095                 atomic_set(&card->write.irq_pending, 0);
2096                 wake_up(&card->wait_q);
2097                 return rc;
2098         }
2099
2100         /* we have only one long running ipassist, since we can ensure
2101            process context of this command we can sleep */
2102         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2103         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2104             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2105                 if (!wait_event_timeout(reply->wait_q,
2106                     atomic_read(&reply->received), event_timeout))
2107                         goto time_err;
2108         } else {
2109                 while (!atomic_read(&reply->received)) {
2110                         if (time_after(jiffies, timeout))
2111                                 goto time_err;
2112                         cpu_relax();
2113                 }
2114         }
2115
2116         if (reply->rc == -EIO)
2117                 goto error;
2118         rc = reply->rc;
2119         qeth_put_reply(reply);
2120         return rc;
2121
2122 time_err:
2123         reply->rc = -ETIME;
2124         spin_lock_irqsave(&reply->card->lock, flags);
2125         list_del_init(&reply->list);
2126         spin_unlock_irqrestore(&reply->card->lock, flags);
2127         atomic_inc(&reply->received);
2128 error:
2129         atomic_set(&card->write.irq_pending, 0);
2130         qeth_release_buffer(iob->channel, iob);
2131         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2132         rc = reply->rc;
2133         qeth_put_reply(reply);
2134         return rc;
2135 }
2136 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2137
2138 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2139                 unsigned long data)
2140 {
2141         struct qeth_cmd_buffer *iob;
2142
2143         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2144
2145         iob = (struct qeth_cmd_buffer *) data;
2146         memcpy(&card->token.cm_filter_r,
2147                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2148                QETH_MPC_TOKEN_LENGTH);
2149         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2150         return 0;
2151 }
2152
2153 static int qeth_cm_enable(struct qeth_card *card)
2154 {
2155         int rc;
2156         struct qeth_cmd_buffer *iob;
2157
2158         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2159
2160         iob = qeth_wait_for_buffer(&card->write);
2161         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2162         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2163                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2164         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2165                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2166
2167         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2168                                     qeth_cm_enable_cb, NULL);
2169         return rc;
2170 }
2171
2172 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2173                 unsigned long data)
2174 {
2175
2176         struct qeth_cmd_buffer *iob;
2177
2178         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2179
2180         iob = (struct qeth_cmd_buffer *) data;
2181         memcpy(&card->token.cm_connection_r,
2182                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2183                QETH_MPC_TOKEN_LENGTH);
2184         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2185         return 0;
2186 }
2187
2188 static int qeth_cm_setup(struct qeth_card *card)
2189 {
2190         int rc;
2191         struct qeth_cmd_buffer *iob;
2192
2193         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2194
2195         iob = qeth_wait_for_buffer(&card->write);
2196         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2197         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2198                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2199         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2200                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2201         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2202                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2203         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2204                                     qeth_cm_setup_cb, NULL);
2205         return rc;
2206
2207 }
2208
2209 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2210 {
2211         switch (card->info.type) {
2212         case QETH_CARD_TYPE_UNKNOWN:
2213                 return 1500;
2214         case QETH_CARD_TYPE_IQD:
2215                 return card->info.max_mtu;
2216         case QETH_CARD_TYPE_OSD:
2217                 switch (card->info.link_type) {
2218                 case QETH_LINK_TYPE_HSTR:
2219                 case QETH_LINK_TYPE_LANE_TR:
2220                         return 2000;
2221                 default:
2222                         return card->options.layer2 ? 1500 : 1492;
2223                 }
2224         case QETH_CARD_TYPE_OSM:
2225         case QETH_CARD_TYPE_OSX:
2226                 return card->options.layer2 ? 1500 : 1492;
2227         default:
2228                 return 1500;
2229         }
2230 }
2231
2232 static inline int qeth_get_mtu_outof_framesize(int framesize)
2233 {
2234         switch (framesize) {
2235         case 0x4000:
2236                 return 8192;
2237         case 0x6000:
2238                 return 16384;
2239         case 0xa000:
2240                 return 32768;
2241         case 0xffff:
2242                 return 57344;
2243         default:
2244                 return 0;
2245         }
2246 }
2247
2248 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2249 {
2250         switch (card->info.type) {
2251         case QETH_CARD_TYPE_OSD:
2252         case QETH_CARD_TYPE_OSM:
2253         case QETH_CARD_TYPE_OSX:
2254         case QETH_CARD_TYPE_IQD:
2255                 return ((mtu >= 576) &&
2256                         (mtu <= card->info.max_mtu));
2257         case QETH_CARD_TYPE_OSN:
2258         case QETH_CARD_TYPE_UNKNOWN:
2259         default:
2260                 return 1;
2261         }
2262 }
2263
2264 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2265                 unsigned long data)
2266 {
2267
2268         __u16 mtu, framesize;
2269         __u16 len;
2270         __u8 link_type;
2271         struct qeth_cmd_buffer *iob;
2272
2273         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2274
2275         iob = (struct qeth_cmd_buffer *) data;
2276         memcpy(&card->token.ulp_filter_r,
2277                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2278                QETH_MPC_TOKEN_LENGTH);
2279         if (card->info.type == QETH_CARD_TYPE_IQD) {
2280                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2281                 mtu = qeth_get_mtu_outof_framesize(framesize);
2282                 if (!mtu) {
2283                         iob->rc = -EINVAL;
2284                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2285                         return 0;
2286                 }
2287                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2288                         /* frame size has changed */
2289                         if (card->dev &&
2290                             ((card->dev->mtu == card->info.initial_mtu) ||
2291                              (card->dev->mtu > mtu)))
2292                                 card->dev->mtu = mtu;
2293                         qeth_free_qdio_buffers(card);
2294                 }
2295                 card->info.initial_mtu = mtu;
2296                 card->info.max_mtu = mtu;
2297                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2298         } else {
2299                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2300                         iob->data);
2301                 card->info.initial_mtu = min(card->info.max_mtu,
2302                                         qeth_get_initial_mtu_for_card(card));
2303                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2304         }
2305
2306         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2307         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2308                 memcpy(&link_type,
2309                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2310                 card->info.link_type = link_type;
2311         } else
2312                 card->info.link_type = 0;
2313         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2314         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2315         return 0;
2316 }
2317
2318 static int qeth_ulp_enable(struct qeth_card *card)
2319 {
2320         int rc;
2321         char prot_type;
2322         struct qeth_cmd_buffer *iob;
2323
2324         /*FIXME: trace view callbacks*/
2325         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2326
2327         iob = qeth_wait_for_buffer(&card->write);
2328         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2329
2330         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2331                 (__u8) card->info.portno;
2332         if (card->options.layer2)
2333                 if (card->info.type == QETH_CARD_TYPE_OSN)
2334                         prot_type = QETH_PROT_OSN2;
2335                 else
2336                         prot_type = QETH_PROT_LAYER2;
2337         else
2338                 prot_type = QETH_PROT_TCPIP;
2339
2340         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2341         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2342                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2343         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2344                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2345         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2346                                     qeth_ulp_enable_cb, NULL);
2347         return rc;
2348
2349 }
2350
2351 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2352                 unsigned long data)
2353 {
2354         struct qeth_cmd_buffer *iob;
2355
2356         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2357
2358         iob = (struct qeth_cmd_buffer *) data;
2359         memcpy(&card->token.ulp_connection_r,
2360                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2361                QETH_MPC_TOKEN_LENGTH);
2362         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2363                      3)) {
2364                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2365                 dev_err(&card->gdev->dev, "A connection could not be "
2366                         "established because of an OLM limit\n");
2367                 iob->rc = -EMLINK;
2368         }
2369         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2370         return 0;
2371 }
2372
2373 static int qeth_ulp_setup(struct qeth_card *card)
2374 {
2375         int rc;
2376         __u16 temp;
2377         struct qeth_cmd_buffer *iob;
2378         struct ccw_dev_id dev_id;
2379
2380         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2381
2382         iob = qeth_wait_for_buffer(&card->write);
2383         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2384
2385         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2386                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2387         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2388                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2389         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2390                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2391
2392         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2393         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2394         temp = (card->info.cula << 8) + card->info.unit_addr2;
2395         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2396         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2397                                     qeth_ulp_setup_cb, NULL);
2398         return rc;
2399 }
2400
2401 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2402 {
2403         int rc;
2404         struct qeth_qdio_out_buffer *newbuf;
2405
2406         rc = 0;
2407         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2408         if (!newbuf) {
2409                 rc = -ENOMEM;
2410                 goto out;
2411         }
2412         newbuf->buffer = q->qdio_bufs[bidx];
2413         skb_queue_head_init(&newbuf->skb_list);
2414         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2415         newbuf->q = q;
2416         newbuf->aob = NULL;
2417         newbuf->next_pending = q->bufs[bidx];
2418         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2419         q->bufs[bidx] = newbuf;
2420         if (q->bufstates) {
2421                 q->bufstates[bidx].user = newbuf;
2422                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2423                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2424                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2425                                 (long) newbuf->next_pending);
2426         }
2427 out:
2428         return rc;
2429 }
2430
2431 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2432 {
2433         if (!q)
2434                 return;
2435
2436         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2437         kfree(q);
2438 }
2439
2440 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2441 {
2442         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2443
2444         if (!q)
2445                 return NULL;
2446
2447         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2448                 kfree(q);
2449                 return NULL;
2450         }
2451         return q;
2452 }
2453
2454 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2455 {
2456         int i, j;
2457
2458         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2459
2460         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2461                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2462                 return 0;
2463
2464         QETH_DBF_TEXT(SETUP, 2, "inq");
2465         card->qdio.in_q = qeth_alloc_qdio_queue();
2466         if (!card->qdio.in_q)
2467                 goto out_nomem;
2468
2469         /* inbound buffer pool */
2470         if (qeth_alloc_buffer_pool(card))
2471                 goto out_freeinq;
2472
2473         /* outbound */
2474         card->qdio.out_qs =
2475                 kzalloc(card->qdio.no_out_queues *
2476                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2477         if (!card->qdio.out_qs)
2478                 goto out_freepool;
2479         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2480                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2481                 if (!card->qdio.out_qs[i])
2482                         goto out_freeoutq;
2483                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2484                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2485                 card->qdio.out_qs[i]->queue_no = i;
2486                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2487                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2488                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2489                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2490                                 goto out_freeoutqbufs;
2491                 }
2492         }
2493
2494         /* completion */
2495         if (qeth_alloc_cq(card))
2496                 goto out_freeoutq;
2497
2498         return 0;
2499
2500 out_freeoutqbufs:
2501         while (j > 0) {
2502                 --j;
2503                 kmem_cache_free(qeth_qdio_outbuf_cache,
2504                                 card->qdio.out_qs[i]->bufs[j]);
2505                 card->qdio.out_qs[i]->bufs[j] = NULL;
2506         }
2507 out_freeoutq:
2508         while (i > 0) {
2509                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2510                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2511         }
2512         kfree(card->qdio.out_qs);
2513         card->qdio.out_qs = NULL;
2514 out_freepool:
2515         qeth_free_buffer_pool(card);
2516 out_freeinq:
2517         qeth_free_qdio_queue(card->qdio.in_q);
2518         card->qdio.in_q = NULL;
2519 out_nomem:
2520         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2521         return -ENOMEM;
2522 }
2523
2524 static void qeth_free_qdio_buffers(struct qeth_card *card)
2525 {
2526         int i, j;
2527
2528         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2529                 QETH_QDIO_UNINITIALIZED)
2530                 return;
2531
2532         qeth_free_cq(card);
2533         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2534         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2535                 if (card->qdio.in_q->bufs[j].rx_skb)
2536                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2537         }
2538         qeth_free_qdio_queue(card->qdio.in_q);
2539         card->qdio.in_q = NULL;
2540         /* inbound buffer pool */
2541         qeth_free_buffer_pool(card);
2542         /* free outbound qdio_qs */
2543         if (card->qdio.out_qs) {
2544                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2545                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2546                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2547                 }
2548                 kfree(card->qdio.out_qs);
2549                 card->qdio.out_qs = NULL;
2550         }
2551 }
2552
2553 static void qeth_create_qib_param_field(struct qeth_card *card,
2554                 char *param_field)
2555 {
2556
2557         param_field[0] = _ascebc['P'];
2558         param_field[1] = _ascebc['C'];
2559         param_field[2] = _ascebc['I'];
2560         param_field[3] = _ascebc['T'];
2561         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2562         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2563         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2564 }
2565
2566 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2567                 char *param_field)
2568 {
2569         param_field[16] = _ascebc['B'];
2570         param_field[17] = _ascebc['L'];
2571         param_field[18] = _ascebc['K'];
2572         param_field[19] = _ascebc['T'];
2573         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2574         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2575         *((unsigned int *) (&param_field[28])) =
2576                 card->info.blkt.inter_packet_jumbo;
2577 }
2578
2579 static int qeth_qdio_activate(struct qeth_card *card)
2580 {
2581         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2582         return qdio_activate(CARD_DDEV(card));
2583 }
2584
2585 static int qeth_dm_act(struct qeth_card *card)
2586 {
2587         int rc;
2588         struct qeth_cmd_buffer *iob;
2589
2590         QETH_DBF_TEXT(SETUP, 2, "dmact");
2591
2592         iob = qeth_wait_for_buffer(&card->write);
2593         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2594
2595         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2596                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2597         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2598                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2599         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2600         return rc;
2601 }
2602
2603 static int qeth_mpc_initialize(struct qeth_card *card)
2604 {
2605         int rc;
2606
2607         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2608
2609         rc = qeth_issue_next_read(card);
2610         if (rc) {
2611                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2612                 return rc;
2613         }
2614         rc = qeth_cm_enable(card);
2615         if (rc) {
2616                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2617                 goto out_qdio;
2618         }
2619         rc = qeth_cm_setup(card);
2620         if (rc) {
2621                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2622                 goto out_qdio;
2623         }
2624         rc = qeth_ulp_enable(card);
2625         if (rc) {
2626                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2627                 goto out_qdio;
2628         }
2629         rc = qeth_ulp_setup(card);
2630         if (rc) {
2631                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2632                 goto out_qdio;
2633         }
2634         rc = qeth_alloc_qdio_buffers(card);
2635         if (rc) {
2636                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2637                 goto out_qdio;
2638         }
2639         rc = qeth_qdio_establish(card);
2640         if (rc) {
2641                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2642                 qeth_free_qdio_buffers(card);
2643                 goto out_qdio;
2644         }
2645         rc = qeth_qdio_activate(card);
2646         if (rc) {
2647                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2648                 goto out_qdio;
2649         }
2650         rc = qeth_dm_act(card);
2651         if (rc) {
2652                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2653                 goto out_qdio;
2654         }
2655
2656         return 0;
2657 out_qdio:
2658         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2659         qdio_free(CARD_DDEV(card));
2660         return rc;
2661 }
2662
2663 void qeth_print_status_message(struct qeth_card *card)
2664 {
2665         switch (card->info.type) {
2666         case QETH_CARD_TYPE_OSD:
2667         case QETH_CARD_TYPE_OSM:
2668         case QETH_CARD_TYPE_OSX:
2669                 /* VM will use a non-zero first character
2670                  * to indicate a HiperSockets like reporting
2671                  * of the level OSA sets the first character to zero
2672                  * */
2673                 if (!card->info.mcl_level[0]) {
2674                         sprintf(card->info.mcl_level, "%02x%02x",
2675                                 card->info.mcl_level[2],
2676                                 card->info.mcl_level[3]);
2677                         break;
2678                 }
2679                 /* fallthrough */
2680         case QETH_CARD_TYPE_IQD:
2681                 if ((card->info.guestlan) ||
2682                     (card->info.mcl_level[0] & 0x80)) {
2683                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2684                                 card->info.mcl_level[0]];
2685                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2686                                 card->info.mcl_level[1]];
2687                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2688                                 card->info.mcl_level[2]];
2689                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2690                                 card->info.mcl_level[3]];
2691                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2692                 }
2693                 break;
2694         default:
2695                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2696         }
2697         dev_info(&card->gdev->dev,
2698                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2699                  qeth_get_cardname(card),
2700                  (card->info.mcl_level[0]) ? " (level: " : "",
2701                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2702                  (card->info.mcl_level[0]) ? ")" : "",
2703                  qeth_get_cardname_short(card));
2704 }
2705 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2706
2707 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2708 {
2709         struct qeth_buffer_pool_entry *entry;
2710
2711         QETH_CARD_TEXT(card, 5, "inwrklst");
2712
2713         list_for_each_entry(entry,
2714                             &card->qdio.init_pool.entry_list, init_list) {
2715                 qeth_put_buffer_pool_entry(card, entry);
2716         }
2717 }
2718
2719 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2720                 struct qeth_card *card)
2721 {
2722         struct list_head *plh;
2723         struct qeth_buffer_pool_entry *entry;
2724         int i, free;
2725         struct page *page;
2726
2727         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2728                 return NULL;
2729
2730         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2731                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2732                 free = 1;
2733                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2734                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2735                                 free = 0;
2736                                 break;
2737                         }
2738                 }
2739                 if (free) {
2740                         list_del_init(&entry->list);
2741                         return entry;
2742                 }
2743         }
2744
2745         /* no free buffer in pool so take first one and swap pages */
2746         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2747                         struct qeth_buffer_pool_entry, list);
2748         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2749                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2750                         page = alloc_page(GFP_ATOMIC);
2751                         if (!page) {
2752                                 return NULL;
2753                         } else {
2754                                 free_page((unsigned long)entry->elements[i]);
2755                                 entry->elements[i] = page_address(page);
2756                                 if (card->options.performance_stats)
2757                                         card->perf_stats.sg_alloc_page_rx++;
2758                         }
2759                 }
2760         }
2761         list_del_init(&entry->list);
2762         return entry;
2763 }
2764
2765 static int qeth_init_input_buffer(struct qeth_card *card,
2766                 struct qeth_qdio_buffer *buf)
2767 {
2768         struct qeth_buffer_pool_entry *pool_entry;
2769         int i;
2770
2771         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2772                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2773                 if (!buf->rx_skb)
2774                         return 1;
2775         }
2776
2777         pool_entry = qeth_find_free_buffer_pool_entry(card);
2778         if (!pool_entry)
2779                 return 1;
2780
2781         /*
2782          * since the buffer is accessed only from the input_tasklet
2783          * there shouldn't be a need to synchronize; also, since we use
2784          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2785          * buffers
2786          */
2787
2788         buf->pool_entry = pool_entry;
2789         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2790                 buf->buffer->element[i].length = PAGE_SIZE;
2791                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2792                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2793                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2794                 else
2795                         buf->buffer->element[i].eflags = 0;
2796                 buf->buffer->element[i].sflags = 0;
2797         }
2798         return 0;
2799 }
2800
2801 int qeth_init_qdio_queues(struct qeth_card *card)
2802 {
2803         int i, j;
2804         int rc;
2805
2806         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2807
2808         /* inbound queue */
2809         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2810                            QDIO_MAX_BUFFERS_PER_Q);
2811         qeth_initialize_working_pool_list(card);
2812         /*give only as many buffers to hardware as we have buffer pool entries*/
2813         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2814                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2815         card->qdio.in_q->next_buf_to_init =
2816                 card->qdio.in_buf_pool.buf_count - 1;
2817         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2818                      card->qdio.in_buf_pool.buf_count - 1);
2819         if (rc) {
2820                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2821                 return rc;
2822         }
2823
2824         /* completion */
2825         rc = qeth_cq_init(card);
2826         if (rc) {
2827                 return rc;
2828         }
2829
2830         /* outbound queue */
2831         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2832                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2833                                    QDIO_MAX_BUFFERS_PER_Q);
2834                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2835                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2836                                         card->qdio.out_qs[i]->bufs[j],
2837                                         QETH_QDIO_BUF_EMPTY);
2838                 }
2839                 card->qdio.out_qs[i]->card = card;
2840                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2841                 card->qdio.out_qs[i]->do_pack = 0;
2842                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2843                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2844                 atomic_set(&card->qdio.out_qs[i]->state,
2845                            QETH_OUT_Q_UNLOCKED);
2846         }
2847         return 0;
2848 }
2849 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2850
2851 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2852 {
2853         switch (link_type) {
2854         case QETH_LINK_TYPE_HSTR:
2855                 return 2;
2856         default:
2857                 return 1;
2858         }
2859 }
2860
2861 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2862                 struct qeth_ipa_cmd *cmd, __u8 command,
2863                 enum qeth_prot_versions prot)
2864 {
2865         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2866         cmd->hdr.command = command;
2867         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2868         cmd->hdr.seqno = card->seqno.ipa;
2869         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2870         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2871         if (card->options.layer2)
2872                 cmd->hdr.prim_version_no = 2;
2873         else
2874                 cmd->hdr.prim_version_no = 1;
2875         cmd->hdr.param_count = 1;
2876         cmd->hdr.prot_version = prot;
2877         cmd->hdr.ipa_supported = 0;
2878         cmd->hdr.ipa_enabled = 0;
2879 }
2880
2881 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2882                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2883 {
2884         struct qeth_cmd_buffer *iob;
2885         struct qeth_ipa_cmd *cmd;
2886
2887         iob = qeth_get_buffer(&card->write);
2888         if (iob) {
2889                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2890                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2891         } else {
2892                 dev_warn(&card->gdev->dev,
2893                          "The qeth driver ran out of channel command buffers\n");
2894                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2895                                  dev_name(&card->gdev->dev));
2896         }
2897
2898         return iob;
2899 }
2900 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2901
2902 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2903                 char prot_type)
2904 {
2905         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2906         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2907         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2908                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2909 }
2910 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2911
2912 /**
2913  * qeth_send_ipa_cmd() - send an IPA command
2914  *
2915  * See qeth_send_control_data() for explanation of the arguments.
2916  */
2917
2918 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2919                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2920                         unsigned long),
2921                 void *reply_param)
2922 {
2923         int rc;
2924         char prot_type;
2925
2926         QETH_CARD_TEXT(card, 4, "sendipa");
2927
2928         if (card->options.layer2)
2929                 if (card->info.type == QETH_CARD_TYPE_OSN)
2930                         prot_type = QETH_PROT_OSN2;
2931                 else
2932                         prot_type = QETH_PROT_LAYER2;
2933         else
2934                 prot_type = QETH_PROT_TCPIP;
2935         qeth_prepare_ipa_cmd(card, iob, prot_type);
2936         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2937                                                 iob, reply_cb, reply_param);
2938         if (rc == -ETIME) {
2939                 qeth_clear_ipacmd_list(card);
2940                 qeth_schedule_recovery(card);
2941         }
2942         return rc;
2943 }
2944 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2945
2946 static int qeth_send_startlan(struct qeth_card *card)
2947 {
2948         int rc;
2949         struct qeth_cmd_buffer *iob;
2950
2951         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2952
2953         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2954         if (!iob)
2955                 return -ENOMEM;
2956         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2957         return rc;
2958 }
2959
2960 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2961                 struct qeth_reply *reply, unsigned long data)
2962 {
2963         struct qeth_ipa_cmd *cmd;
2964
2965         QETH_CARD_TEXT(card, 4, "defadpcb");
2966
2967         cmd = (struct qeth_ipa_cmd *) data;
2968         if (cmd->hdr.return_code == 0)
2969                 cmd->hdr.return_code =
2970                         cmd->data.setadapterparms.hdr.return_code;
2971         return 0;
2972 }
2973
2974 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2975                 struct qeth_reply *reply, unsigned long data)
2976 {
2977         struct qeth_ipa_cmd *cmd;
2978
2979         QETH_CARD_TEXT(card, 3, "quyadpcb");
2980
2981         cmd = (struct qeth_ipa_cmd *) data;
2982         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2983                 card->info.link_type =
2984                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2985                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2986         }
2987         card->options.adp.supported_funcs =
2988                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2989         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2990 }
2991
2992 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2993                 __u32 command, __u32 cmdlen)
2994 {
2995         struct qeth_cmd_buffer *iob;
2996         struct qeth_ipa_cmd *cmd;
2997
2998         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2999                                      QETH_PROT_IPV4);
3000         if (iob) {
3001                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3002                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3003                 cmd->data.setadapterparms.hdr.command_code = command;
3004                 cmd->data.setadapterparms.hdr.used_total = 1;
3005                 cmd->data.setadapterparms.hdr.seq_no = 1;
3006         }
3007
3008         return iob;
3009 }
3010
3011 int qeth_query_setadapterparms(struct qeth_card *card)
3012 {
3013         int rc;
3014         struct qeth_cmd_buffer *iob;
3015
3016         QETH_CARD_TEXT(card, 3, "queryadp");
3017         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3018                                    sizeof(struct qeth_ipacmd_setadpparms));
3019         if (!iob)
3020                 return -ENOMEM;
3021         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3022         return rc;
3023 }
3024 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3025
3026 static int qeth_query_ipassists_cb(struct qeth_card *card,
3027                 struct qeth_reply *reply, unsigned long data)
3028 {
3029         struct qeth_ipa_cmd *cmd;
3030
3031         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3032
3033         cmd = (struct qeth_ipa_cmd *) data;
3034
3035         switch (cmd->hdr.return_code) {
3036         case IPA_RC_NOTSUPP:
3037         case IPA_RC_L2_UNSUPPORTED_CMD:
3038                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3039                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3040                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3041                 return -0;
3042         default:
3043                 if (cmd->hdr.return_code) {
3044                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3045                                                 "rc=%d\n",
3046                                                 dev_name(&card->gdev->dev),
3047                                                 cmd->hdr.return_code);
3048                         return 0;
3049                 }
3050         }
3051
3052         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3053                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3054                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3055         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3056                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3057                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3058         } else
3059                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3060                                         "\n", dev_name(&card->gdev->dev));
3061         return 0;
3062 }
3063
3064 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3065 {
3066         int rc;
3067         struct qeth_cmd_buffer *iob;
3068
3069         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3070         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3071         if (!iob)
3072                 return -ENOMEM;
3073         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3074         return rc;
3075 }
3076 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3077
3078 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3079                                 struct qeth_reply *reply, unsigned long data)
3080 {
3081         struct qeth_ipa_cmd *cmd;
3082         struct qeth_switch_info *sw_info;
3083         struct qeth_query_switch_attributes *attrs;
3084
3085         QETH_CARD_TEXT(card, 2, "qswiatcb");
3086         cmd = (struct qeth_ipa_cmd *) data;
3087         sw_info = (struct qeth_switch_info *)reply->param;
3088         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3089                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3090                 sw_info->capabilities = attrs->capabilities;
3091                 sw_info->settings = attrs->settings;
3092                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3093                                                         sw_info->settings);
3094         }
3095         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3096
3097         return 0;
3098 }
3099
3100 int qeth_query_switch_attributes(struct qeth_card *card,
3101                                  struct qeth_switch_info *sw_info)
3102 {
3103         struct qeth_cmd_buffer *iob;
3104
3105         QETH_CARD_TEXT(card, 2, "qswiattr");
3106         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3107                 return -EOPNOTSUPP;
3108         if (!netif_carrier_ok(card->dev))
3109                 return -ENOMEDIUM;
3110         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3111                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3112         if (!iob)
3113                 return -ENOMEM;
3114         return qeth_send_ipa_cmd(card, iob,
3115                                 qeth_query_switch_attributes_cb, sw_info);
3116 }
3117 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3118
3119 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3120                 struct qeth_reply *reply, unsigned long data)
3121 {
3122         struct qeth_ipa_cmd *cmd;
3123         __u16 rc;
3124
3125         cmd = (struct qeth_ipa_cmd *)data;
3126         rc = cmd->hdr.return_code;
3127         if (rc)
3128                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3129         else
3130                 card->info.diagass_support = cmd->data.diagass.ext;
3131         return 0;
3132 }
3133
3134 static int qeth_query_setdiagass(struct qeth_card *card)
3135 {
3136         struct qeth_cmd_buffer *iob;
3137         struct qeth_ipa_cmd    *cmd;
3138
3139         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3140         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3141         if (!iob)
3142                 return -ENOMEM;
3143         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3144         cmd->data.diagass.subcmd_len = 16;
3145         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3146         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3147 }
3148
3149 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3150 {
3151         unsigned long info = get_zeroed_page(GFP_KERNEL);
3152         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3153         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3154         struct ccw_dev_id ccwid;
3155         int level;
3156
3157         tid->chpid = card->info.chpid;
3158         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3159         tid->ssid = ccwid.ssid;
3160         tid->devno = ccwid.devno;
3161         if (!info)
3162                 return;
3163         level = stsi(NULL, 0, 0, 0);
3164         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3165                 tid->lparnr = info222->lpar_number;
3166         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3167                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3168                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3169         }
3170         free_page(info);
3171         return;
3172 }
3173
3174 static int qeth_hw_trap_cb(struct qeth_card *card,
3175                 struct qeth_reply *reply, unsigned long data)
3176 {
3177         struct qeth_ipa_cmd *cmd;
3178         __u16 rc;
3179
3180         cmd = (struct qeth_ipa_cmd *)data;
3181         rc = cmd->hdr.return_code;
3182         if (rc)
3183                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3184         return 0;
3185 }
3186
3187 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3188 {
3189         struct qeth_cmd_buffer *iob;
3190         struct qeth_ipa_cmd *cmd;
3191
3192         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3193         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3194         if (!iob)
3195                 return -ENOMEM;
3196         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3197         cmd->data.diagass.subcmd_len = 80;
3198         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3199         cmd->data.diagass.type = 1;
3200         cmd->data.diagass.action = action;
3201         switch (action) {
3202         case QETH_DIAGS_TRAP_ARM:
3203                 cmd->data.diagass.options = 0x0003;
3204                 cmd->data.diagass.ext = 0x00010000 +
3205                         sizeof(struct qeth_trap_id);
3206                 qeth_get_trap_id(card,
3207                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3208                 break;
3209         case QETH_DIAGS_TRAP_DISARM:
3210                 cmd->data.diagass.options = 0x0001;
3211                 break;
3212         case QETH_DIAGS_TRAP_CAPTURE:
3213                 break;
3214         }
3215         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3216 }
3217 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3218
3219 static int qeth_check_qdio_errors(struct qeth_card *card,
3220                                   struct qdio_buffer *buf,
3221                                   unsigned int qdio_error,
3222                                   const char *dbftext)
3223 {
3224         if (qdio_error) {
3225                 QETH_CARD_TEXT(card, 2, dbftext);
3226                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3227                                buf->element[15].sflags);
3228                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3229                                buf->element[14].sflags);
3230                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3231                 if ((buf->element[15].sflags) == 0x12) {
3232                         card->stats.rx_dropped++;
3233                         return 0;
3234                 } else
3235                         return 1;
3236         }
3237         return 0;
3238 }
3239
3240 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3241 {
3242         struct qeth_qdio_q *queue = card->qdio.in_q;
3243         struct list_head *lh;
3244         int count;
3245         int i;
3246         int rc;
3247         int newcount = 0;
3248
3249         count = (index < queue->next_buf_to_init)?
3250                 card->qdio.in_buf_pool.buf_count -
3251                 (queue->next_buf_to_init - index) :
3252                 card->qdio.in_buf_pool.buf_count -
3253                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3254         /* only requeue at a certain threshold to avoid SIGAs */
3255         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3256                 for (i = queue->next_buf_to_init;
3257                      i < queue->next_buf_to_init + count; ++i) {
3258                         if (qeth_init_input_buffer(card,
3259                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3260                                 break;
3261                         } else {
3262                                 newcount++;
3263                         }
3264                 }
3265
3266                 if (newcount < count) {
3267                         /* we are in memory shortage so we switch back to
3268                            traditional skb allocation and drop packages */
3269                         atomic_set(&card->force_alloc_skb, 3);
3270                         count = newcount;
3271                 } else {
3272                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3273                 }
3274
3275                 if (!count) {
3276                         i = 0;
3277                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3278                                 i++;
3279                         if (i == card->qdio.in_buf_pool.buf_count) {
3280                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3281                                 card->reclaim_index = index;
3282                                 schedule_delayed_work(
3283                                         &card->buffer_reclaim_work,
3284                                         QETH_RECLAIM_WORK_TIME);
3285                         }
3286                         return;
3287                 }
3288
3289                 /*
3290                  * according to old code it should be avoided to requeue all
3291                  * 128 buffers in order to benefit from PCI avoidance.
3292                  * this function keeps at least one buffer (the buffer at
3293                  * 'index') un-requeued -> this buffer is the first buffer that
3294                  * will be requeued the next time
3295                  */
3296                 if (card->options.performance_stats) {
3297                         card->perf_stats.inbound_do_qdio_cnt++;
3298                         card->perf_stats.inbound_do_qdio_start_time =
3299                                 qeth_get_micros();
3300                 }
3301                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3302                              queue->next_buf_to_init, count);
3303                 if (card->options.performance_stats)
3304                         card->perf_stats.inbound_do_qdio_time +=
3305                                 qeth_get_micros() -
3306                                 card->perf_stats.inbound_do_qdio_start_time;
3307                 if (rc) {
3308                         QETH_CARD_TEXT(card, 2, "qinberr");
3309                 }
3310                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3311                                           QDIO_MAX_BUFFERS_PER_Q;
3312         }
3313 }
3314
3315 static void qeth_buffer_reclaim_work(struct work_struct *work)
3316 {
3317         struct qeth_card *card = container_of(work, struct qeth_card,
3318                 buffer_reclaim_work.work);
3319
3320         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3321         qeth_queue_input_buffer(card, card->reclaim_index);
3322 }
3323
3324 static void qeth_handle_send_error(struct qeth_card *card,
3325                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3326 {
3327         int sbalf15 = buffer->buffer->element[15].sflags;
3328
3329         QETH_CARD_TEXT(card, 6, "hdsnderr");
3330         if (card->info.type == QETH_CARD_TYPE_IQD) {
3331                 if (sbalf15 == 0) {
3332                         qdio_err = 0;
3333                 } else {
3334                         qdio_err = 1;
3335                 }
3336         }
3337         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3338
3339         if (!qdio_err)
3340                 return;
3341
3342         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3343                 return;
3344
3345         QETH_CARD_TEXT(card, 1, "lnkfail");
3346         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3347                        (u16)qdio_err, (u8)sbalf15);
3348 }
3349
3350 /*
3351  * Switched to packing state if the number of used buffers on a queue
3352  * reaches a certain limit.
3353  */
3354 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3355 {
3356         if (!queue->do_pack) {
3357                 if (atomic_read(&queue->used_buffers)
3358                     >= QETH_HIGH_WATERMARK_PACK){
3359                         /* switch non-PACKING -> PACKING */
3360                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3361                         if (queue->card->options.performance_stats)
3362                                 queue->card->perf_stats.sc_dp_p++;
3363                         queue->do_pack = 1;
3364                 }
3365         }
3366 }
3367
3368 /*
3369  * Switches from packing to non-packing mode. If there is a packing
3370  * buffer on the queue this buffer will be prepared to be flushed.
3371  * In that case 1 is returned to inform the caller. If no buffer
3372  * has to be flushed, zero is returned.
3373  */
3374 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3375 {
3376         struct qeth_qdio_out_buffer *buffer;
3377         int flush_count = 0;
3378
3379         if (queue->do_pack) {
3380                 if (atomic_read(&queue->used_buffers)
3381                     <= QETH_LOW_WATERMARK_PACK) {
3382                         /* switch PACKING -> non-PACKING */
3383                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3384                         if (queue->card->options.performance_stats)
3385                                 queue->card->perf_stats.sc_p_dp++;
3386                         queue->do_pack = 0;
3387                         /* flush packing buffers */
3388                         buffer = queue->bufs[queue->next_buf_to_fill];
3389                         if ((atomic_read(&buffer->state) ==
3390                                                 QETH_QDIO_BUF_EMPTY) &&
3391                             (buffer->next_element_to_fill > 0)) {
3392                                 atomic_set(&buffer->state,
3393                                            QETH_QDIO_BUF_PRIMED);
3394                                 flush_count++;
3395                                 queue->next_buf_to_fill =
3396                                         (queue->next_buf_to_fill + 1) %
3397                                         QDIO_MAX_BUFFERS_PER_Q;
3398                         }
3399                 }
3400         }
3401         return flush_count;
3402 }
3403
3404
3405 /*
3406  * Called to flush a packing buffer if no more pci flags are on the queue.
3407  * Checks if there is a packing buffer and prepares it to be flushed.
3408  * In that case returns 1, otherwise zero.
3409  */
3410 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3411 {
3412         struct qeth_qdio_out_buffer *buffer;
3413
3414         buffer = queue->bufs[queue->next_buf_to_fill];
3415         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3416            (buffer->next_element_to_fill > 0)) {
3417                 /* it's a packing buffer */
3418                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3419                 queue->next_buf_to_fill =
3420                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3421                 return 1;
3422         }
3423         return 0;
3424 }
3425
3426 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3427                                int count)
3428 {
3429         struct qeth_qdio_out_buffer *buf;
3430         int rc;
3431         int i;
3432         unsigned int qdio_flags;
3433
3434         for (i = index; i < index + count; ++i) {
3435                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3436                 buf = queue->bufs[bidx];
3437                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3438                                 SBAL_EFLAGS_LAST_ENTRY;
3439
3440                 if (queue->bufstates)
3441                         queue->bufstates[bidx].user = buf;
3442
3443                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3444                         continue;
3445
3446                 if (!queue->do_pack) {
3447                         if ((atomic_read(&queue->used_buffers) >=
3448                                 (QETH_HIGH_WATERMARK_PACK -
3449                                  QETH_WATERMARK_PACK_FUZZ)) &&
3450                             !atomic_read(&queue->set_pci_flags_count)) {
3451                                 /* it's likely that we'll go to packing
3452                                  * mode soon */
3453                                 atomic_inc(&queue->set_pci_flags_count);
3454                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3455                         }
3456                 } else {
3457                         if (!atomic_read(&queue->set_pci_flags_count)) {
3458                                 /*
3459                                  * there's no outstanding PCI any more, so we
3460                                  * have to request a PCI to be sure the the PCI
3461                                  * will wake at some time in the future then we
3462                                  * can flush packed buffers that might still be
3463                                  * hanging around, which can happen if no
3464                                  * further send was requested by the stack
3465                                  */
3466                                 atomic_inc(&queue->set_pci_flags_count);
3467                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3468                         }
3469                 }
3470         }
3471
3472         netif_trans_update(queue->card->dev);
3473         if (queue->card->options.performance_stats) {
3474                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3475                 queue->card->perf_stats.outbound_do_qdio_start_time =
3476                         qeth_get_micros();
3477         }
3478         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3479         if (atomic_read(&queue->set_pci_flags_count))
3480                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3481         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3482                      queue->queue_no, index, count);
3483         if (queue->card->options.performance_stats)
3484                 queue->card->perf_stats.outbound_do_qdio_time +=
3485                         qeth_get_micros() -
3486                         queue->card->perf_stats.outbound_do_qdio_start_time;
3487         atomic_add(count, &queue->used_buffers);
3488         if (rc) {
3489                 queue->card->stats.tx_errors += count;
3490                 /* ignore temporary SIGA errors without busy condition */
3491                 if (rc == -ENOBUFS)
3492                         return;
3493                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3494                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3495                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3496                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3497                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3498
3499                 /* this must not happen under normal circumstances. if it
3500                  * happens something is really wrong -> recover */
3501                 qeth_schedule_recovery(queue->card);
3502                 return;
3503         }
3504         if (queue->card->options.performance_stats)
3505                 queue->card->perf_stats.bufs_sent += count;
3506 }
3507
3508 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3509 {
3510         int index;
3511         int flush_cnt = 0;
3512         int q_was_packing = 0;
3513
3514         /*
3515          * check if weed have to switch to non-packing mode or if
3516          * we have to get a pci flag out on the queue
3517          */
3518         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3519             !atomic_read(&queue->set_pci_flags_count)) {
3520                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3521                                 QETH_OUT_Q_UNLOCKED) {
3522                         /*
3523                          * If we get in here, there was no action in
3524                          * do_send_packet. So, we check if there is a
3525                          * packing buffer to be flushed here.
3526                          */
3527                         netif_stop_queue(queue->card->dev);
3528                         index = queue->next_buf_to_fill;
3529                         q_was_packing = queue->do_pack;
3530                         /* queue->do_pack may change */
3531                         barrier();
3532                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3533                         if (!flush_cnt &&
3534                             !atomic_read(&queue->set_pci_flags_count))
3535                                 flush_cnt +=
3536                                         qeth_flush_buffers_on_no_pci(queue);
3537                         if (queue->card->options.performance_stats &&
3538                             q_was_packing)
3539                                 queue->card->perf_stats.bufs_sent_pack +=
3540                                         flush_cnt;
3541                         if (flush_cnt)
3542                                 qeth_flush_buffers(queue, index, flush_cnt);
3543                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3544                 }
3545         }
3546 }
3547
3548 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3549                 unsigned long card_ptr)
3550 {
3551         struct qeth_card *card = (struct qeth_card *)card_ptr;
3552
3553         if (card->dev && (card->dev->flags & IFF_UP))
3554                 napi_schedule(&card->napi);
3555 }
3556 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3557
3558 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3559 {
3560         int rc;
3561
3562         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3563                 rc = -1;
3564                 goto out;
3565         } else {
3566                 if (card->options.cq == cq) {
3567                         rc = 0;
3568                         goto out;
3569                 }
3570
3571                 if (card->state != CARD_STATE_DOWN &&
3572                     card->state != CARD_STATE_RECOVER) {
3573                         rc = -1;
3574                         goto out;
3575                 }
3576
3577                 qeth_free_qdio_buffers(card);
3578                 card->options.cq = cq;
3579                 rc = 0;
3580         }
3581 out:
3582         return rc;
3583
3584 }
3585 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3586
3587
3588 static void qeth_qdio_cq_handler(struct qeth_card *card,
3589                 unsigned int qdio_err,
3590                 unsigned int queue, int first_element, int count) {
3591         struct qeth_qdio_q *cq = card->qdio.c_q;
3592         int i;
3593         int rc;
3594
3595         if (!qeth_is_cq(card, queue))
3596                 goto out;
3597
3598         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3599         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3600         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3601
3602         if (qdio_err) {
3603                 netif_stop_queue(card->dev);
3604                 qeth_schedule_recovery(card);
3605                 goto out;
3606         }
3607
3608         if (card->options.performance_stats) {
3609                 card->perf_stats.cq_cnt++;
3610                 card->perf_stats.cq_start_time = qeth_get_micros();
3611         }
3612
3613         for (i = first_element; i < first_element + count; ++i) {
3614                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3615                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3616                 int e;
3617
3618                 e = 0;
3619                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3620                        buffer->element[e].addr) {
3621                         unsigned long phys_aob_addr;
3622
3623                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3624                         qeth_qdio_handle_aob(card, phys_aob_addr);
3625                         buffer->element[e].addr = NULL;
3626                         buffer->element[e].eflags = 0;
3627                         buffer->element[e].sflags = 0;
3628                         buffer->element[e].length = 0;
3629
3630                         ++e;
3631                 }
3632
3633                 buffer->element[15].eflags = 0;
3634                 buffer->element[15].sflags = 0;
3635         }
3636         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3637                     card->qdio.c_q->next_buf_to_init,
3638                     count);
3639         if (rc) {
3640                 dev_warn(&card->gdev->dev,
3641                         "QDIO reported an error, rc=%i\n", rc);
3642                 QETH_CARD_TEXT(card, 2, "qcqherr");
3643         }
3644         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3645                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3646
3647         netif_wake_queue(card->dev);
3648
3649         if (card->options.performance_stats) {
3650                 int delta_t = qeth_get_micros();
3651                 delta_t -= card->perf_stats.cq_start_time;
3652                 card->perf_stats.cq_time += delta_t;
3653         }
3654 out:
3655         return;
3656 }
3657
3658 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3659                 unsigned int queue, int first_elem, int count,
3660                 unsigned long card_ptr)
3661 {
3662         struct qeth_card *card = (struct qeth_card *)card_ptr;
3663
3664         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3665         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3666
3667         if (qeth_is_cq(card, queue))
3668                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3669         else if (qdio_err)
3670                 qeth_schedule_recovery(card);
3671
3672
3673 }
3674 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3675
3676 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3677                 unsigned int qdio_error, int __queue, int first_element,
3678                 int count, unsigned long card_ptr)
3679 {
3680         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3681         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3682         struct qeth_qdio_out_buffer *buffer;
3683         int i;
3684
3685         QETH_CARD_TEXT(card, 6, "qdouhdl");
3686         if (qdio_error & QDIO_ERROR_FATAL) {
3687                 QETH_CARD_TEXT(card, 2, "achkcond");
3688                 netif_stop_queue(card->dev);
3689                 qeth_schedule_recovery(card);
3690                 return;
3691         }
3692         if (card->options.performance_stats) {
3693                 card->perf_stats.outbound_handler_cnt++;
3694                 card->perf_stats.outbound_handler_start_time =
3695                         qeth_get_micros();
3696         }
3697         for (i = first_element; i < (first_element + count); ++i) {
3698                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3699                 buffer = queue->bufs[bidx];
3700                 qeth_handle_send_error(card, buffer, qdio_error);
3701
3702                 if (queue->bufstates &&
3703                     (queue->bufstates[bidx].flags &
3704                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3705                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3706
3707                         if (atomic_cmpxchg(&buffer->state,
3708                                            QETH_QDIO_BUF_PRIMED,
3709                                            QETH_QDIO_BUF_PENDING) ==
3710                                 QETH_QDIO_BUF_PRIMED) {
3711                                 qeth_notify_skbs(queue, buffer,
3712                                                  TX_NOTIFY_PENDING);
3713                         }
3714                         buffer->aob = queue->bufstates[bidx].aob;
3715                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3716                         QETH_CARD_TEXT(queue->card, 5, "aob");
3717                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3718                                         virt_to_phys(buffer->aob));
3719                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3720                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3721                                 qeth_schedule_recovery(card);
3722                         }
3723                 } else {
3724                         if (card->options.cq == QETH_CQ_ENABLED) {
3725                                 enum iucv_tx_notify n;
3726
3727                                 n = qeth_compute_cq_notification(
3728                                         buffer->buffer->element[15].sflags, 0);
3729                                 qeth_notify_skbs(queue, buffer, n);
3730                         }
3731
3732                         qeth_clear_output_buffer(queue, buffer,
3733                                                 QETH_QDIO_BUF_EMPTY);
3734                 }
3735                 qeth_cleanup_handled_pending(queue, bidx, 0);
3736         }
3737         atomic_sub(count, &queue->used_buffers);
3738         /* check if we need to do something on this outbound queue */
3739         if (card->info.type != QETH_CARD_TYPE_IQD)
3740                 qeth_check_outbound_queue(queue);
3741
3742         netif_wake_queue(queue->card->dev);
3743         if (card->options.performance_stats)
3744                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3745                         card->perf_stats.outbound_handler_start_time;
3746 }
3747 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3748
3749 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3750 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3751 {
3752         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3753                 return 2;
3754         return queue_num;
3755 }
3756
3757 /**
3758  * Note: Function assumes that we have 4 outbound queues.
3759  */
3760 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3761                         int ipv, int cast_type)
3762 {
3763         __be16 *tci;
3764         u8 tos;
3765
3766         if (cast_type && card->info.is_multicast_different)
3767                 return card->info.is_multicast_different &
3768                         (card->qdio.no_out_queues - 1);
3769
3770         switch (card->qdio.do_prio_queueing) {
3771         case QETH_PRIO_Q_ING_TOS:
3772         case QETH_PRIO_Q_ING_PREC:
3773                 switch (ipv) {
3774                 case 4:
3775                         tos = ipv4_get_dsfield(ip_hdr(skb));
3776                         break;
3777                 case 6:
3778                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3779                         break;
3780                 default:
3781                         return card->qdio.default_out_queue;
3782                 }
3783                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3784                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3785                 if (tos & IPTOS_MINCOST)
3786                         return qeth_cut_iqd_prio(card, 3);
3787                 if (tos & IPTOS_RELIABILITY)
3788                         return 2;
3789                 if (tos & IPTOS_THROUGHPUT)
3790                         return 1;
3791                 if (tos & IPTOS_LOWDELAY)
3792                         return 0;
3793                 break;
3794         case QETH_PRIO_Q_ING_SKB:
3795                 if (skb->priority > 5)
3796                         return 0;
3797                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3798         case QETH_PRIO_Q_ING_VLAN:
3799                 tci = &((struct ethhdr *)skb->data)->h_proto;
3800                 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3801                         return qeth_cut_iqd_prio(card,
3802                         ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3803                 break;
3804         default:
3805                 break;
3806         }
3807         return card->qdio.default_out_queue;
3808 }
3809 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3810
3811 /**
3812  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3813  * @skb:                                SKB address
3814  *
3815  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3816  * fragmented part of the SKB. Returns zero for linear SKB.
3817  */
3818 int qeth_get_elements_for_frags(struct sk_buff *skb)
3819 {
3820         int cnt, elements = 0;
3821
3822         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3823                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3824
3825                 elements += qeth_get_elements_for_range(
3826                         (addr_t)skb_frag_address(frag),
3827                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3828         }
3829         return elements;
3830 }
3831 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3832
3833 /**
3834  * qeth_get_elements_no() -     find number of SBALEs for skb data, inc. frags.
3835  * @card:                       qeth card structure, to check max. elems.
3836  * @skb:                        SKB address
3837  * @extra_elems:                extra elems needed, to check against max.
3838  * @data_offset:                range starts at skb->data + data_offset
3839  *
3840  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3841  * skb data, including linear part and fragments. Checks if the result plus
3842  * extra_elems fits under the limit for the card. Returns 0 if it does not.
3843  * Note: extra_elems is not included in the returned result.
3844  */
3845 int qeth_get_elements_no(struct qeth_card *card,
3846                      struct sk_buff *skb, int extra_elems, int data_offset)
3847 {
3848         int elements = qeth_get_elements_for_range(
3849                                 (addr_t)skb->data + data_offset,
3850                                 (addr_t)skb->data + skb_headlen(skb)) +
3851                         qeth_get_elements_for_frags(skb);
3852
3853         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3854                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3855                         "(Number=%d / Length=%d). Discarded.\n",
3856                         elements + extra_elems, skb->len);
3857                 return 0;
3858         }
3859         return elements;
3860 }
3861 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3862
3863 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3864 {
3865         int hroom, inpage, rest;
3866
3867         if (((unsigned long)skb->data & PAGE_MASK) !=
3868             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3869                 hroom = skb_headroom(skb);
3870                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3871                 rest = len - inpage;
3872                 if (rest > hroom)
3873                         return 1;
3874                 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3875                 skb->data -= rest;
3876                 skb->tail -= rest;
3877                 *hdr = (struct qeth_hdr *)skb->data;
3878                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3879         }
3880         return 0;
3881 }
3882 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3883
3884 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3885         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3886         int offset)
3887 {
3888         int length = skb_headlen(skb);
3889         int length_here;
3890         int element;
3891         char *data;
3892         int first_lap, cnt;
3893         struct skb_frag_struct *frag;
3894
3895         element = *next_element_to_fill;
3896         data = skb->data;
3897         first_lap = (is_tso == 0 ? 1 : 0);
3898
3899         if (offset >= 0) {
3900                 data = skb->data + offset;
3901                 length -= offset;
3902                 first_lap = 0;
3903         }
3904
3905         while (length > 0) {
3906                 /* length_here is the remaining amount of data in this page */
3907                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3908                 if (length < length_here)
3909                         length_here = length;
3910
3911                 buffer->element[element].addr = data;
3912                 buffer->element[element].length = length_here;
3913                 length -= length_here;
3914                 if (!length) {
3915                         if (first_lap)
3916                                 if (skb_shinfo(skb)->nr_frags)
3917                                         buffer->element[element].eflags =
3918                                                 SBAL_EFLAGS_FIRST_FRAG;
3919                                 else
3920                                         buffer->element[element].eflags = 0;
3921                         else
3922                                 buffer->element[element].eflags =
3923                                     SBAL_EFLAGS_MIDDLE_FRAG;
3924                 } else {
3925                         if (first_lap)
3926                                 buffer->element[element].eflags =
3927                                     SBAL_EFLAGS_FIRST_FRAG;
3928                         else
3929                                 buffer->element[element].eflags =
3930                                     SBAL_EFLAGS_MIDDLE_FRAG;
3931                 }
3932                 data += length_here;
3933                 element++;
3934                 first_lap = 0;
3935         }
3936
3937         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3938                 frag = &skb_shinfo(skb)->frags[cnt];
3939                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3940                         frag->page_offset;
3941                 length = frag->size;
3942                 while (length > 0) {
3943                         length_here = PAGE_SIZE -
3944                                 ((unsigned long) data % PAGE_SIZE);
3945                         if (length < length_here)
3946                                 length_here = length;
3947
3948                         buffer->element[element].addr = data;
3949                         buffer->element[element].length = length_here;
3950                         buffer->element[element].eflags =
3951                                 SBAL_EFLAGS_MIDDLE_FRAG;
3952                         length -= length_here;
3953                         data += length_here;
3954                         element++;
3955                 }
3956         }
3957
3958         if (buffer->element[element - 1].eflags)
3959                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3960         *next_element_to_fill = element;
3961 }
3962
3963 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3964                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3965                 struct qeth_hdr *hdr, int offset, int hd_len)
3966 {
3967         struct qdio_buffer *buffer;
3968         int flush_cnt = 0, hdr_len, large_send = 0;
3969
3970         buffer = buf->buffer;
3971         atomic_inc(&skb->users);
3972         skb_queue_tail(&buf->skb_list, skb);
3973
3974         /*check first on TSO ....*/
3975         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3976                 int element = buf->next_element_to_fill;
3977
3978                 hdr_len = sizeof(struct qeth_hdr_tso) +
3979                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3980                 /*fill first buffer entry only with header information */
3981                 buffer->element[element].addr = skb->data;
3982                 buffer->element[element].length = hdr_len;
3983                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3984                 buf->next_element_to_fill++;
3985                 skb->data += hdr_len;
3986                 skb->len  -= hdr_len;
3987                 large_send = 1;
3988         }
3989
3990         if (offset >= 0) {
3991                 int element = buf->next_element_to_fill;
3992                 buffer->element[element].addr = hdr;
3993                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3994                                                         hd_len;
3995                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3996                 buf->is_header[element] = 1;
3997                 buf->next_element_to_fill++;
3998         }
3999
4000         __qeth_fill_buffer(skb, buffer, large_send,
4001                 (int *)&buf->next_element_to_fill, offset);
4002
4003         if (!queue->do_pack) {
4004                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4005                 /* set state to PRIMED -> will be flushed */
4006                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4007                 flush_cnt = 1;
4008         } else {
4009                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4010                 if (queue->card->options.performance_stats)
4011                         queue->card->perf_stats.skbs_sent_pack++;
4012                 if (buf->next_element_to_fill >=
4013                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4014                         /*
4015                          * packed buffer if full -> set state PRIMED
4016                          * -> will be flushed
4017                          */
4018                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4019                         flush_cnt = 1;
4020                 }
4021         }
4022         return flush_cnt;
4023 }
4024
4025 int qeth_do_send_packet_fast(struct qeth_card *card,
4026                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4027                 struct qeth_hdr *hdr, int offset, int hd_len)
4028 {
4029         struct qeth_qdio_out_buffer *buffer;
4030         int index;
4031
4032         /* spin until we get the queue ... */
4033         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4034                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4035         /* ... now we've got the queue */
4036         index = queue->next_buf_to_fill;
4037         buffer = queue->bufs[queue->next_buf_to_fill];
4038         /*
4039          * check if buffer is empty to make sure that we do not 'overtake'
4040          * ourselves and try to fill a buffer that is already primed
4041          */
4042         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4043                 goto out;
4044         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4045                                           QDIO_MAX_BUFFERS_PER_Q;
4046         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4047         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4048         qeth_flush_buffers(queue, index, 1);
4049         return 0;
4050 out:
4051         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4052         return -EBUSY;
4053 }
4054 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4055
4056 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4057                 struct sk_buff *skb, struct qeth_hdr *hdr,
4058                 int elements_needed)
4059 {
4060         struct qeth_qdio_out_buffer *buffer;
4061         int start_index;
4062         int flush_count = 0;
4063         int do_pack = 0;
4064         int tmp;
4065         int rc = 0;
4066
4067         /* spin until we get the queue ... */
4068         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4069                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4070         start_index = queue->next_buf_to_fill;
4071         buffer = queue->bufs[queue->next_buf_to_fill];
4072         /*
4073          * check if buffer is empty to make sure that we do not 'overtake'
4074          * ourselves and try to fill a buffer that is already primed
4075          */
4076         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4077                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4078                 return -EBUSY;
4079         }
4080         /* check if we need to switch packing state of this queue */
4081         qeth_switch_to_packing_if_needed(queue);
4082         if (queue->do_pack) {
4083                 do_pack = 1;
4084                 /* does packet fit in current buffer? */
4085                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4086                     buffer->next_element_to_fill) < elements_needed) {
4087                         /* ... no -> set state PRIMED */
4088                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4089                         flush_count++;
4090                         queue->next_buf_to_fill =
4091                                 (queue->next_buf_to_fill + 1) %
4092                                 QDIO_MAX_BUFFERS_PER_Q;
4093                         buffer = queue->bufs[queue->next_buf_to_fill];
4094                         /* we did a step forward, so check buffer state
4095                          * again */
4096                         if (atomic_read(&buffer->state) !=
4097                             QETH_QDIO_BUF_EMPTY) {
4098                                 qeth_flush_buffers(queue, start_index,
4099                                                            flush_count);
4100                                 atomic_set(&queue->state,
4101                                                 QETH_OUT_Q_UNLOCKED);
4102                                 return -EBUSY;
4103                         }
4104                 }
4105         }
4106         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4107         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4108                                   QDIO_MAX_BUFFERS_PER_Q;
4109         flush_count += tmp;
4110         if (flush_count)
4111                 qeth_flush_buffers(queue, start_index, flush_count);
4112         else if (!atomic_read(&queue->set_pci_flags_count))
4113                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4114         /*
4115          * queue->state will go from LOCKED -> UNLOCKED or from
4116          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4117          * (switch packing state or flush buffer to get another pci flag out).
4118          * In that case we will enter this loop
4119          */
4120         while (atomic_dec_return(&queue->state)) {
4121                 flush_count = 0;
4122                 start_index = queue->next_buf_to_fill;
4123                 /* check if we can go back to non-packing state */
4124                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4125                 /*
4126                  * check if we need to flush a packing buffer to get a pci
4127                  * flag out on the queue
4128                  */
4129                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4130                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4131                 if (flush_count)
4132                         qeth_flush_buffers(queue, start_index, flush_count);
4133         }
4134         /* at this point the queue is UNLOCKED again */
4135         if (queue->card->options.performance_stats && do_pack)
4136                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4137
4138         return rc;
4139 }
4140 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4141
4142 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4143                 struct qeth_reply *reply, unsigned long data)
4144 {
4145         struct qeth_ipa_cmd *cmd;
4146         struct qeth_ipacmd_setadpparms *setparms;
4147
4148         QETH_CARD_TEXT(card, 4, "prmadpcb");
4149
4150         cmd = (struct qeth_ipa_cmd *) data;
4151         setparms = &(cmd->data.setadapterparms);
4152
4153         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4154         if (cmd->hdr.return_code) {
4155                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4156                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4157         }
4158         card->info.promisc_mode = setparms->data.mode;
4159         return 0;
4160 }
4161
4162 void qeth_setadp_promisc_mode(struct qeth_card *card)
4163 {
4164         enum qeth_ipa_promisc_modes mode;
4165         struct net_device *dev = card->dev;
4166         struct qeth_cmd_buffer *iob;
4167         struct qeth_ipa_cmd *cmd;
4168
4169         QETH_CARD_TEXT(card, 4, "setprom");
4170
4171         if (((dev->flags & IFF_PROMISC) &&
4172              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4173             (!(dev->flags & IFF_PROMISC) &&
4174              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4175                 return;
4176         mode = SET_PROMISC_MODE_OFF;
4177         if (dev->flags & IFF_PROMISC)
4178                 mode = SET_PROMISC_MODE_ON;
4179         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4180
4181         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4182                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4183         if (!iob)
4184                 return;
4185         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4186         cmd->data.setadapterparms.data.mode = mode;
4187         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4188 }
4189 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4190
4191 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4192 {
4193         struct qeth_card *card;
4194         char dbf_text[15];
4195
4196         card = dev->ml_priv;
4197
4198         QETH_CARD_TEXT(card, 4, "chgmtu");
4199         sprintf(dbf_text, "%8x", new_mtu);
4200         QETH_CARD_TEXT(card, 4, dbf_text);
4201
4202         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4203             (!qeth_mtu_is_valid(card, new_mtu)))
4204                 return -EINVAL;
4205         dev->mtu = new_mtu;
4206         return 0;
4207 }
4208 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4209
4210 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4211 {
4212         struct qeth_card *card;
4213
4214         card = dev->ml_priv;
4215
4216         QETH_CARD_TEXT(card, 5, "getstat");
4217
4218         return &card->stats;
4219 }
4220 EXPORT_SYMBOL_GPL(qeth_get_stats);
4221
4222 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4223                 struct qeth_reply *reply, unsigned long data)
4224 {
4225         struct qeth_ipa_cmd *cmd;
4226
4227         QETH_CARD_TEXT(card, 4, "chgmaccb");
4228
4229         cmd = (struct qeth_ipa_cmd *) data;
4230         if (!card->options.layer2 ||
4231             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4232                 memcpy(card->dev->dev_addr,
4233                        &cmd->data.setadapterparms.data.change_addr.addr,
4234                        OSA_ADDR_LEN);
4235                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4236         }
4237         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4238         return 0;
4239 }
4240
4241 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4242 {
4243         int rc;
4244         struct qeth_cmd_buffer *iob;
4245         struct qeth_ipa_cmd *cmd;
4246
4247         QETH_CARD_TEXT(card, 4, "chgmac");
4248
4249         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4250                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4251                                    sizeof(struct qeth_change_addr));
4252         if (!iob)
4253                 return -ENOMEM;
4254         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4255         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4256         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4257         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4258                card->dev->dev_addr, OSA_ADDR_LEN);
4259         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4260                                NULL);
4261         return rc;
4262 }
4263 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4264
4265 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4266                 struct qeth_reply *reply, unsigned long data)
4267 {
4268         struct qeth_ipa_cmd *cmd;
4269         struct qeth_set_access_ctrl *access_ctrl_req;
4270         int fallback = *(int *)reply->param;
4271
4272         QETH_CARD_TEXT(card, 4, "setaccb");
4273
4274         cmd = (struct qeth_ipa_cmd *) data;
4275         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4276         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4277         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4278         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4279                 cmd->data.setadapterparms.hdr.return_code);
4280         if (cmd->data.setadapterparms.hdr.return_code !=
4281                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4282                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4283                                 card->gdev->dev.kobj.name,
4284                                 access_ctrl_req->subcmd_code,
4285                                 cmd->data.setadapterparms.hdr.return_code);
4286         switch (cmd->data.setadapterparms.hdr.return_code) {
4287         case SET_ACCESS_CTRL_RC_SUCCESS:
4288                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4289                         dev_info(&card->gdev->dev,
4290                             "QDIO data connection isolation is deactivated\n");
4291                 } else {
4292                         dev_info(&card->gdev->dev,
4293                             "QDIO data connection isolation is activated\n");
4294                 }
4295                 break;
4296         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4297                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4298                                 "deactivated\n", dev_name(&card->gdev->dev));
4299                 if (fallback)
4300                         card->options.isolation = card->options.prev_isolation;
4301                 break;
4302         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4303                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4304                                 " activated\n", dev_name(&card->gdev->dev));
4305                 if (fallback)
4306                         card->options.isolation = card->options.prev_isolation;
4307                 break;
4308         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4309                 dev_err(&card->gdev->dev, "Adapter does not "
4310                         "support QDIO data connection isolation\n");
4311                 break;
4312         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4313                 dev_err(&card->gdev->dev,
4314                         "Adapter is dedicated. "
4315                         "QDIO data connection isolation not supported\n");
4316                 if (fallback)
4317                         card->options.isolation = card->options.prev_isolation;
4318                 break;
4319         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4320                 dev_err(&card->gdev->dev,
4321                         "TSO does not permit QDIO data connection isolation\n");
4322                 if (fallback)
4323                         card->options.isolation = card->options.prev_isolation;
4324                 break;
4325         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4326                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4327                         "support reflective relay mode\n");
4328                 if (fallback)
4329                         card->options.isolation = card->options.prev_isolation;
4330                 break;
4331         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4332                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4333                                         "enabled at the adjacent switch port");
4334                 if (fallback)
4335                         card->options.isolation = card->options.prev_isolation;
4336                 break;
4337         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4338                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4339                                         "at the adjacent switch failed\n");
4340                 break;
4341         default:
4342                 /* this should never happen */
4343                 if (fallback)
4344                         card->options.isolation = card->options.prev_isolation;
4345                 break;
4346         }
4347         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4348         return 0;
4349 }
4350
4351 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4352                 enum qeth_ipa_isolation_modes isolation, int fallback)
4353 {
4354         int rc;
4355         struct qeth_cmd_buffer *iob;
4356         struct qeth_ipa_cmd *cmd;
4357         struct qeth_set_access_ctrl *access_ctrl_req;
4358
4359         QETH_CARD_TEXT(card, 4, "setacctl");
4360
4361         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4362         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4363
4364         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4365                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4366                                    sizeof(struct qeth_set_access_ctrl));
4367         if (!iob)
4368                 return -ENOMEM;
4369         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4370         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4371         access_ctrl_req->subcmd_code = isolation;
4372
4373         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4374                                &fallback);
4375         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4376         return rc;
4377 }
4378
4379 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4380 {
4381         int rc = 0;
4382
4383         QETH_CARD_TEXT(card, 4, "setactlo");
4384
4385         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4386              card->info.type == QETH_CARD_TYPE_OSX) &&
4387              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4388                 rc = qeth_setadpparms_set_access_ctrl(card,
4389                         card->options.isolation, fallback);
4390                 if (rc) {
4391                         QETH_DBF_MESSAGE(3,
4392                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4393                                 card->gdev->dev.kobj.name,
4394                                 rc);
4395                         rc = -EOPNOTSUPP;
4396                 }
4397         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4398                 card->options.isolation = ISOLATION_MODE_NONE;
4399
4400                 dev_err(&card->gdev->dev, "Adapter does not "
4401                         "support QDIO data connection isolation\n");
4402                 rc = -EOPNOTSUPP;
4403         }
4404         return rc;
4405 }
4406 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4407
4408 void qeth_tx_timeout(struct net_device *dev)
4409 {
4410         struct qeth_card *card;
4411
4412         card = dev->ml_priv;
4413         QETH_CARD_TEXT(card, 4, "txtimeo");
4414         card->stats.tx_errors++;
4415         qeth_schedule_recovery(card);
4416 }
4417 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4418
4419 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4420 {
4421         struct qeth_card *card = dev->ml_priv;
4422         int rc = 0;
4423
4424         switch (regnum) {
4425         case MII_BMCR: /* Basic mode control register */
4426                 rc = BMCR_FULLDPLX;
4427                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4428                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4429                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4430                         rc |= BMCR_SPEED100;
4431                 break;
4432         case MII_BMSR: /* Basic mode status register */
4433                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4434                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4435                      BMSR_100BASE4;
4436                 break;
4437         case MII_PHYSID1: /* PHYS ID 1 */
4438                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4439                      dev->dev_addr[2];
4440                 rc = (rc >> 5) & 0xFFFF;
4441                 break;
4442         case MII_PHYSID2: /* PHYS ID 2 */
4443                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4444                 break;
4445         case MII_ADVERTISE: /* Advertisement control reg */
4446                 rc = ADVERTISE_ALL;
4447                 break;
4448         case MII_LPA: /* Link partner ability reg */
4449                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4450                      LPA_100BASE4 | LPA_LPACK;
4451                 break;
4452         case MII_EXPANSION: /* Expansion register */
4453                 break;
4454         case MII_DCOUNTER: /* disconnect counter */
4455                 break;
4456         case MII_FCSCOUNTER: /* false carrier counter */
4457                 break;
4458         case MII_NWAYTEST: /* N-way auto-neg test register */
4459                 break;
4460         case MII_RERRCOUNTER: /* rx error counter */
4461                 rc = card->stats.rx_errors;
4462                 break;
4463         case MII_SREVISION: /* silicon revision */
4464                 break;
4465         case MII_RESV1: /* reserved 1 */
4466                 break;
4467         case MII_LBRERROR: /* loopback, rx, bypass error */
4468                 break;
4469         case MII_PHYADDR: /* physical address */
4470                 break;
4471         case MII_RESV2: /* reserved 2 */
4472                 break;
4473         case MII_TPISTATUS: /* TPI status for 10mbps */
4474                 break;
4475         case MII_NCONFIG: /* network interface config */
4476                 break;
4477         default:
4478                 break;
4479         }
4480         return rc;
4481 }
4482
4483 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4484                 struct qeth_cmd_buffer *iob, int len,
4485                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4486                         unsigned long),
4487                 void *reply_param)
4488 {
4489         u16 s1, s2;
4490
4491         QETH_CARD_TEXT(card, 4, "sendsnmp");
4492
4493         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4494         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4495                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4496         /* adjust PDU length fields in IPA_PDU_HEADER */
4497         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4498         s2 = (u32) len;
4499         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4500         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4501         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4502         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4503         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4504                                       reply_cb, reply_param);
4505 }
4506
4507 static int qeth_snmp_command_cb(struct qeth_card *card,
4508                 struct qeth_reply *reply, unsigned long sdata)
4509 {
4510         struct qeth_ipa_cmd *cmd;
4511         struct qeth_arp_query_info *qinfo;
4512         struct qeth_snmp_cmd *snmp;
4513         unsigned char *data;
4514         __u16 data_len;
4515
4516         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4517
4518         cmd = (struct qeth_ipa_cmd *) sdata;
4519         data = (unsigned char *)((char *)cmd - reply->offset);
4520         qinfo = (struct qeth_arp_query_info *) reply->param;
4521         snmp = &cmd->data.setadapterparms.data.snmp;
4522
4523         if (cmd->hdr.return_code) {
4524                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4525                 return 0;
4526         }
4527         if (cmd->data.setadapterparms.hdr.return_code) {
4528                 cmd->hdr.return_code =
4529                         cmd->data.setadapterparms.hdr.return_code;
4530                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4531                 return 0;
4532         }
4533         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4534         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4535                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4536         else
4537                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4538
4539         /* check if there is enough room in userspace */
4540         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4541                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4542                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4543                 return 0;
4544         }
4545         QETH_CARD_TEXT_(card, 4, "snore%i",
4546                        cmd->data.setadapterparms.hdr.used_total);
4547         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4548                 cmd->data.setadapterparms.hdr.seq_no);
4549         /*copy entries to user buffer*/
4550         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4551                 memcpy(qinfo->udata + qinfo->udata_offset,
4552                        (char *)snmp,
4553                        data_len + offsetof(struct qeth_snmp_cmd, data));
4554                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4555         } else {
4556                 memcpy(qinfo->udata + qinfo->udata_offset,
4557                        (char *)&snmp->request, data_len);
4558         }
4559         qinfo->udata_offset += data_len;
4560         /* check if all replies received ... */
4561                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4562                                cmd->data.setadapterparms.hdr.used_total);
4563                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4564                                cmd->data.setadapterparms.hdr.seq_no);
4565         if (cmd->data.setadapterparms.hdr.seq_no <
4566             cmd->data.setadapterparms.hdr.used_total)
4567                 return 1;
4568         return 0;
4569 }
4570
4571 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4572 {
4573         struct qeth_cmd_buffer *iob;
4574         struct qeth_ipa_cmd *cmd;
4575         struct qeth_snmp_ureq *ureq;
4576         unsigned int req_len;
4577         struct qeth_arp_query_info qinfo = {0, };
4578         int rc = 0;
4579
4580         QETH_CARD_TEXT(card, 3, "snmpcmd");
4581
4582         if (card->info.guestlan)
4583                 return -EOPNOTSUPP;
4584
4585         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4586             (!card->options.layer2)) {
4587                 return -EOPNOTSUPP;
4588         }
4589         /* skip 4 bytes (data_len struct member) to get req_len */
4590         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4591                 return -EFAULT;
4592         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4593                        sizeof(struct qeth_ipacmd_hdr) -
4594                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4595                 return -EINVAL;
4596         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4597         if (IS_ERR(ureq)) {
4598                 QETH_CARD_TEXT(card, 2, "snmpnome");
4599                 return PTR_ERR(ureq);
4600         }
4601         qinfo.udata_len = ureq->hdr.data_len;
4602         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4603         if (!qinfo.udata) {
4604                 kfree(ureq);
4605                 return -ENOMEM;
4606         }
4607         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4608
4609         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4610                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4611         if (!iob) {
4612                 rc = -ENOMEM;
4613                 goto out;
4614         }
4615         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4616         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4617         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4618                                     qeth_snmp_command_cb, (void *)&qinfo);
4619         if (rc)
4620                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4621                            QETH_CARD_IFNAME(card), rc);
4622         else {
4623                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4624                         rc = -EFAULT;
4625         }
4626 out:
4627         kfree(ureq);
4628         kfree(qinfo.udata);
4629         return rc;
4630 }
4631
4632 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4633                 struct qeth_reply *reply, unsigned long data)
4634 {
4635         struct qeth_ipa_cmd *cmd;
4636         struct qeth_qoat_priv *priv;
4637         char *resdata;
4638         int resdatalen;
4639
4640         QETH_CARD_TEXT(card, 3, "qoatcb");
4641
4642         cmd = (struct qeth_ipa_cmd *)data;
4643         priv = (struct qeth_qoat_priv *)reply->param;
4644         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4645         resdata = (char *)data + 28;
4646
4647         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4648                 cmd->hdr.return_code = IPA_RC_FFFF;
4649                 return 0;
4650         }
4651
4652         memcpy((priv->buffer + priv->response_len), resdata,
4653                 resdatalen);
4654         priv->response_len += resdatalen;
4655
4656         if (cmd->data.setadapterparms.hdr.seq_no <
4657             cmd->data.setadapterparms.hdr.used_total)
4658                 return 1;
4659         return 0;
4660 }
4661
4662 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4663 {
4664         int rc = 0;
4665         struct qeth_cmd_buffer *iob;
4666         struct qeth_ipa_cmd *cmd;
4667         struct qeth_query_oat *oat_req;
4668         struct qeth_query_oat_data oat_data;
4669         struct qeth_qoat_priv priv;
4670         void __user *tmp;
4671
4672         QETH_CARD_TEXT(card, 3, "qoatcmd");
4673
4674         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4675                 rc = -EOPNOTSUPP;
4676                 goto out;
4677         }
4678
4679         if (copy_from_user(&oat_data, udata,
4680             sizeof(struct qeth_query_oat_data))) {
4681                         rc = -EFAULT;
4682                         goto out;
4683         }
4684
4685         priv.buffer_len = oat_data.buffer_len;
4686         priv.response_len = 0;
4687         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4688         if (!priv.buffer) {
4689                 rc = -ENOMEM;
4690                 goto out;
4691         }
4692
4693         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4694                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4695                                    sizeof(struct qeth_query_oat));
4696         if (!iob) {
4697                 rc = -ENOMEM;
4698                 goto out_free;
4699         }
4700         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4701         oat_req = &cmd->data.setadapterparms.data.query_oat;
4702         oat_req->subcmd_code = oat_data.command;
4703
4704         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4705                                &priv);
4706         if (!rc) {
4707                 if (is_compat_task())
4708                         tmp = compat_ptr(oat_data.ptr);
4709                 else
4710                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4711
4712                 if (copy_to_user(tmp, priv.buffer,
4713                     priv.response_len)) {
4714                         rc = -EFAULT;
4715                         goto out_free;
4716                 }
4717
4718                 oat_data.response_len = priv.response_len;
4719
4720                 if (copy_to_user(udata, &oat_data,
4721                     sizeof(struct qeth_query_oat_data)))
4722                         rc = -EFAULT;
4723         } else
4724                 if (rc == IPA_RC_FFFF)
4725                         rc = -EFAULT;
4726
4727 out_free:
4728         kfree(priv.buffer);
4729 out:
4730         return rc;
4731 }
4732
4733 static int qeth_query_card_info_cb(struct qeth_card *card,
4734                                    struct qeth_reply *reply, unsigned long data)
4735 {
4736         struct qeth_ipa_cmd *cmd;
4737         struct qeth_query_card_info *card_info;
4738         struct carrier_info *carrier_info;
4739
4740         QETH_CARD_TEXT(card, 2, "qcrdincb");
4741         carrier_info = (struct carrier_info *)reply->param;
4742         cmd = (struct qeth_ipa_cmd *)data;
4743         card_info = &cmd->data.setadapterparms.data.card_info;
4744         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4745                 carrier_info->card_type = card_info->card_type;
4746                 carrier_info->port_mode = card_info->port_mode;
4747                 carrier_info->port_speed = card_info->port_speed;
4748         }
4749
4750         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4751         return 0;
4752 }
4753
4754 static int qeth_query_card_info(struct qeth_card *card,
4755                                 struct carrier_info *carrier_info)
4756 {
4757         struct qeth_cmd_buffer *iob;
4758
4759         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4760         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4761                 return -EOPNOTSUPP;
4762         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4763                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4764         if (!iob)
4765                 return -ENOMEM;
4766         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4767                                         (void *)carrier_info);
4768 }
4769
4770 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4771 {
4772         if (card->info.type == QETH_CARD_TYPE_IQD)
4773                 return QDIO_IQDIO_QFMT;
4774         else
4775                 return QDIO_QETH_QFMT;
4776 }
4777
4778 static void qeth_determine_capabilities(struct qeth_card *card)
4779 {
4780         int rc;
4781         int length;
4782         char *prcd;
4783         struct ccw_device *ddev;
4784         int ddev_offline = 0;
4785
4786         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4787         ddev = CARD_DDEV(card);
4788         if (!ddev->online) {
4789                 ddev_offline = 1;
4790                 rc = ccw_device_set_online(ddev);
4791                 if (rc) {
4792                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4793                         goto out;
4794                 }
4795         }
4796
4797         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4798         if (rc) {
4799                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4800                         dev_name(&card->gdev->dev), rc);
4801                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4802                 goto out_offline;
4803         }
4804         qeth_configure_unitaddr(card, prcd);
4805         if (ddev_offline)
4806                 qeth_configure_blkt_default(card, prcd);
4807         kfree(prcd);
4808
4809         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4810         if (rc)
4811                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4812
4813         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4814         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4815         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4816         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4817         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4818         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4819             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4820             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4821                 dev_info(&card->gdev->dev,
4822                         "Completion Queueing supported\n");
4823         } else {
4824                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4825         }
4826
4827
4828 out_offline:
4829         if (ddev_offline == 1)
4830                 ccw_device_set_offline(ddev);
4831 out:
4832         return;
4833 }
4834
4835 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4836         struct qdio_buffer **in_sbal_ptrs,
4837         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4838         int i;
4839
4840         if (card->options.cq == QETH_CQ_ENABLED) {
4841                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4842                              (card->qdio.no_in_queues - 1);
4843                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4844                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4845                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4846                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4847                 }
4848
4849                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4850         }
4851 }
4852
4853 static int qeth_qdio_establish(struct qeth_card *card)
4854 {
4855         struct qdio_initialize init_data;
4856         char *qib_param_field;
4857         struct qdio_buffer **in_sbal_ptrs;
4858         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4859         struct qdio_buffer **out_sbal_ptrs;
4860         int i, j, k;
4861         int rc = 0;
4862
4863         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4864
4865         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4866                               GFP_KERNEL);
4867         if (!qib_param_field) {
4868                 rc =  -ENOMEM;
4869                 goto out_free_nothing;
4870         }
4871
4872         qeth_create_qib_param_field(card, qib_param_field);
4873         qeth_create_qib_param_field_blkt(card, qib_param_field);
4874
4875         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4876                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4877                                GFP_KERNEL);
4878         if (!in_sbal_ptrs) {
4879                 rc = -ENOMEM;
4880                 goto out_free_qib_param;
4881         }
4882         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4883                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4884                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4885         }
4886
4887         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4888                                    GFP_KERNEL);
4889         if (!queue_start_poll) {
4890                 rc = -ENOMEM;
4891                 goto out_free_in_sbals;
4892         }
4893         for (i = 0; i < card->qdio.no_in_queues; ++i)
4894                 queue_start_poll[i] = card->discipline->start_poll;
4895
4896         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4897
4898         out_sbal_ptrs =
4899                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4900                         sizeof(void *), GFP_KERNEL);
4901         if (!out_sbal_ptrs) {
4902                 rc = -ENOMEM;
4903                 goto out_free_queue_start_poll;
4904         }
4905         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4906                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4907                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4908                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4909                 }
4910
4911         memset(&init_data, 0, sizeof(struct qdio_initialize));
4912         init_data.cdev                   = CARD_DDEV(card);
4913         init_data.q_format               = qeth_get_qdio_q_format(card);
4914         init_data.qib_param_field_format = 0;
4915         init_data.qib_param_field        = qib_param_field;
4916         init_data.no_input_qs            = card->qdio.no_in_queues;
4917         init_data.no_output_qs           = card->qdio.no_out_queues;
4918         init_data.input_handler          = card->discipline->input_handler;
4919         init_data.output_handler         = card->discipline->output_handler;
4920         init_data.queue_start_poll_array = queue_start_poll;
4921         init_data.int_parm               = (unsigned long) card;
4922         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4923         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4924         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4925         init_data.scan_threshold =
4926                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4927
4928         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4929                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4930                 rc = qdio_allocate(&init_data);
4931                 if (rc) {
4932                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4933                         goto out;
4934                 }
4935                 rc = qdio_establish(&init_data);
4936                 if (rc) {
4937                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4938                         qdio_free(CARD_DDEV(card));
4939                 }
4940         }
4941
4942         switch (card->options.cq) {
4943         case QETH_CQ_ENABLED:
4944                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4945                 break;
4946         case QETH_CQ_DISABLED:
4947                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4948                 break;
4949         default:
4950                 break;
4951         }
4952 out:
4953         kfree(out_sbal_ptrs);
4954 out_free_queue_start_poll:
4955         kfree(queue_start_poll);
4956 out_free_in_sbals:
4957         kfree(in_sbal_ptrs);
4958 out_free_qib_param:
4959         kfree(qib_param_field);
4960 out_free_nothing:
4961         return rc;
4962 }
4963
4964 static void qeth_core_free_card(struct qeth_card *card)
4965 {
4966
4967         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4968         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4969         qeth_clean_channel(&card->read);
4970         qeth_clean_channel(&card->write);
4971         if (card->dev)
4972                 free_netdev(card->dev);
4973         qeth_free_qdio_buffers(card);
4974         unregister_service_level(&card->qeth_service_level);
4975         kfree(card);
4976 }
4977
4978 void qeth_trace_features(struct qeth_card *card)
4979 {
4980         QETH_CARD_TEXT(card, 2, "features");
4981         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4982         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4983         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4984         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4985                       sizeof(card->info.diagass_support));
4986 }
4987 EXPORT_SYMBOL_GPL(qeth_trace_features);
4988
4989 static struct ccw_device_id qeth_ids[] = {
4990         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4991                                         .driver_info = QETH_CARD_TYPE_OSD},
4992         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4993                                         .driver_info = QETH_CARD_TYPE_IQD},
4994         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4995                                         .driver_info = QETH_CARD_TYPE_OSN},
4996         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4997                                         .driver_info = QETH_CARD_TYPE_OSM},
4998         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4999                                         .driver_info = QETH_CARD_TYPE_OSX},
5000         {},
5001 };
5002 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5003
5004 static struct ccw_driver qeth_ccw_driver = {
5005         .driver = {
5006                 .owner = THIS_MODULE,
5007                 .name = "qeth",
5008         },
5009         .ids = qeth_ids,
5010         .probe = ccwgroup_probe_ccwdev,
5011         .remove = ccwgroup_remove_ccwdev,
5012 };
5013
5014 int qeth_core_hardsetup_card(struct qeth_card *card)
5015 {
5016         int retries = 3;
5017         int rc;
5018
5019         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5020         atomic_set(&card->force_alloc_skb, 0);
5021         qeth_update_from_chp_desc(card);
5022 retry:
5023         if (retries < 3)
5024                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5025                         dev_name(&card->gdev->dev));
5026         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5027         ccw_device_set_offline(CARD_DDEV(card));
5028         ccw_device_set_offline(CARD_WDEV(card));
5029         ccw_device_set_offline(CARD_RDEV(card));
5030         qdio_free(CARD_DDEV(card));
5031         rc = ccw_device_set_online(CARD_RDEV(card));
5032         if (rc)
5033                 goto retriable;
5034         rc = ccw_device_set_online(CARD_WDEV(card));
5035         if (rc)
5036                 goto retriable;
5037         rc = ccw_device_set_online(CARD_DDEV(card));
5038         if (rc)
5039                 goto retriable;
5040 retriable:
5041         if (rc == -ERESTARTSYS) {
5042                 QETH_DBF_TEXT(SETUP, 2, "break1");
5043                 return rc;
5044         } else if (rc) {
5045                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5046                 if (--retries < 0)
5047                         goto out;
5048                 else
5049                         goto retry;
5050         }
5051         qeth_determine_capabilities(card);
5052         qeth_init_tokens(card);
5053         qeth_init_func_level(card);
5054         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5055         if (rc == -ERESTARTSYS) {
5056                 QETH_DBF_TEXT(SETUP, 2, "break2");
5057                 return rc;
5058         } else if (rc) {
5059                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5060                 if (--retries < 0)
5061                         goto out;
5062                 else
5063                         goto retry;
5064         }
5065         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5066         if (rc == -ERESTARTSYS) {
5067                 QETH_DBF_TEXT(SETUP, 2, "break3");
5068                 return rc;
5069         } else if (rc) {
5070                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5071                 if (--retries < 0)
5072                         goto out;
5073                 else
5074                         goto retry;
5075         }
5076         card->read_or_write_problem = 0;
5077         rc = qeth_mpc_initialize(card);
5078         if (rc) {
5079                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5080                 goto out;
5081         }
5082
5083         rc = qeth_send_startlan(card);
5084         if (rc) {
5085                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5086                 if (rc == IPA_RC_LAN_OFFLINE) {
5087                         dev_warn(&card->gdev->dev,
5088                                 "The LAN is offline\n");
5089                         card->lan_online = 0;
5090                 } else {
5091                         rc = -ENODEV;
5092                         goto out;
5093                 }
5094         } else
5095                 card->lan_online = 1;
5096
5097         card->options.ipa4.supported_funcs = 0;
5098         card->options.ipa6.supported_funcs = 0;
5099         card->options.adp.supported_funcs = 0;
5100         card->options.sbp.supported_funcs = 0;
5101         card->info.diagass_support = 0;
5102         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5103         if (rc == -ENOMEM)
5104                 goto out;
5105         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5106                 rc = qeth_query_setadapterparms(card);
5107                 if (rc < 0) {
5108                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5109                         goto out;
5110                 }
5111         }
5112         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5113                 rc = qeth_query_setdiagass(card);
5114                 if (rc < 0) {
5115                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5116                         goto out;
5117                 }
5118         }
5119         return 0;
5120 out:
5121         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5122                 "an error on the device\n");
5123         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5124                 dev_name(&card->gdev->dev), rc);
5125         return rc;
5126 }
5127 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5128
5129 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5130                 struct qdio_buffer_element *element,
5131                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5132 {
5133         struct page *page = virt_to_page(element->addr);
5134         if (*pskb == NULL) {
5135                 if (qethbuffer->rx_skb) {
5136                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5137                         *pskb = qethbuffer->rx_skb;
5138                         qethbuffer->rx_skb = NULL;
5139                 } else {
5140                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5141                         if (!(*pskb))
5142                                 return -ENOMEM;
5143                 }
5144
5145                 skb_reserve(*pskb, ETH_HLEN);
5146                 if (data_len <= QETH_RX_PULL_LEN) {
5147                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5148                                 data_len);
5149                 } else {
5150                         get_page(page);
5151                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5152                                element->addr + offset, QETH_RX_PULL_LEN);
5153                         skb_fill_page_desc(*pskb, *pfrag, page,
5154                                 offset + QETH_RX_PULL_LEN,
5155                                 data_len - QETH_RX_PULL_LEN);
5156                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5157                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5158                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5159                         (*pfrag)++;
5160                 }
5161         } else {
5162                 get_page(page);
5163                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5164                 (*pskb)->data_len += data_len;
5165                 (*pskb)->len      += data_len;
5166                 (*pskb)->truesize += data_len;
5167                 (*pfrag)++;
5168         }
5169
5170
5171         return 0;
5172 }
5173
5174 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5175 {
5176         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5177 }
5178
5179 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5180                 struct qeth_qdio_buffer *qethbuffer,
5181                 struct qdio_buffer_element **__element, int *__offset,
5182                 struct qeth_hdr **hdr)
5183 {
5184         struct qdio_buffer_element *element = *__element;
5185         struct qdio_buffer *buffer = qethbuffer->buffer;
5186         int offset = *__offset;
5187         struct sk_buff *skb = NULL;
5188         int skb_len = 0;
5189         void *data_ptr;
5190         int data_len;
5191         int headroom = 0;
5192         int use_rx_sg = 0;
5193         int frag = 0;
5194
5195         /* qeth_hdr must not cross element boundaries */
5196         if (element->length < offset + sizeof(struct qeth_hdr)) {
5197                 if (qeth_is_last_sbale(element))
5198                         return NULL;
5199                 element++;
5200                 offset = 0;
5201                 if (element->length < sizeof(struct qeth_hdr))
5202                         return NULL;
5203         }
5204         *hdr = element->addr + offset;
5205
5206         offset += sizeof(struct qeth_hdr);
5207         switch ((*hdr)->hdr.l2.id) {
5208         case QETH_HEADER_TYPE_LAYER2:
5209                 skb_len = (*hdr)->hdr.l2.pkt_length;
5210                 break;
5211         case QETH_HEADER_TYPE_LAYER3:
5212                 skb_len = (*hdr)->hdr.l3.length;
5213                 headroom = ETH_HLEN;
5214                 break;
5215         case QETH_HEADER_TYPE_OSN:
5216                 skb_len = (*hdr)->hdr.osn.pdu_length;
5217                 headroom = sizeof(struct qeth_hdr);
5218                 break;
5219         default:
5220                 break;
5221         }
5222
5223         if (!skb_len)
5224                 return NULL;
5225
5226         if (((skb_len >= card->options.rx_sg_cb) &&
5227              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5228              (!atomic_read(&card->force_alloc_skb))) ||
5229             (card->options.cq == QETH_CQ_ENABLED)) {
5230                 use_rx_sg = 1;
5231         } else {
5232                 skb = dev_alloc_skb(skb_len + headroom);
5233                 if (!skb)
5234                         goto no_mem;
5235                 if (headroom)
5236                         skb_reserve(skb, headroom);
5237         }
5238
5239         data_ptr = element->addr + offset;
5240         while (skb_len) {
5241                 data_len = min(skb_len, (int)(element->length - offset));
5242                 if (data_len) {
5243                         if (use_rx_sg) {
5244                                 if (qeth_create_skb_frag(qethbuffer, element,
5245                                     &skb, offset, &frag, data_len))
5246                                         goto no_mem;
5247                         } else {
5248                                 memcpy(skb_put(skb, data_len), data_ptr,
5249                                         data_len);
5250                         }
5251                 }
5252                 skb_len -= data_len;
5253                 if (skb_len) {
5254                         if (qeth_is_last_sbale(element)) {
5255                                 QETH_CARD_TEXT(card, 4, "unexeob");
5256                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5257                                 dev_kfree_skb_any(skb);
5258                                 card->stats.rx_errors++;
5259                                 return NULL;
5260                         }
5261                         element++;
5262                         offset = 0;
5263                         data_ptr = element->addr;
5264                 } else {
5265                         offset += data_len;
5266                 }
5267         }
5268         *__element = element;
5269         *__offset = offset;
5270         if (use_rx_sg && card->options.performance_stats) {
5271                 card->perf_stats.sg_skbs_rx++;
5272                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5273         }
5274         return skb;
5275 no_mem:
5276         if (net_ratelimit()) {
5277                 QETH_CARD_TEXT(card, 2, "noskbmem");
5278         }
5279         card->stats.rx_dropped++;
5280         return NULL;
5281 }
5282 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5283
5284 int qeth_poll(struct napi_struct *napi, int budget)
5285 {
5286         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5287         int work_done = 0;
5288         struct qeth_qdio_buffer *buffer;
5289         int done;
5290         int new_budget = budget;
5291
5292         if (card->options.performance_stats) {
5293                 card->perf_stats.inbound_cnt++;
5294                 card->perf_stats.inbound_start_time = qeth_get_micros();
5295         }
5296
5297         while (1) {
5298                 if (!card->rx.b_count) {
5299                         card->rx.qdio_err = 0;
5300                         card->rx.b_count = qdio_get_next_buffers(
5301                                 card->data.ccwdev, 0, &card->rx.b_index,
5302                                 &card->rx.qdio_err);
5303                         if (card->rx.b_count <= 0) {
5304                                 card->rx.b_count = 0;
5305                                 break;
5306                         }
5307                         card->rx.b_element =
5308                                 &card->qdio.in_q->bufs[card->rx.b_index]
5309                                 .buffer->element[0];
5310                         card->rx.e_offset = 0;
5311                 }
5312
5313                 while (card->rx.b_count) {
5314                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5315                         if (!(card->rx.qdio_err &&
5316                             qeth_check_qdio_errors(card, buffer->buffer,
5317                             card->rx.qdio_err, "qinerr")))
5318                                 work_done +=
5319                                         card->discipline->process_rx_buffer(
5320                                                 card, new_budget, &done);
5321                         else
5322                                 done = 1;
5323
5324                         if (done) {
5325                                 if (card->options.performance_stats)
5326                                         card->perf_stats.bufs_rec++;
5327                                 qeth_put_buffer_pool_entry(card,
5328                                         buffer->pool_entry);
5329                                 qeth_queue_input_buffer(card, card->rx.b_index);
5330                                 card->rx.b_count--;
5331                                 if (card->rx.b_count) {
5332                                         card->rx.b_index =
5333                                                 (card->rx.b_index + 1) %
5334                                                 QDIO_MAX_BUFFERS_PER_Q;
5335                                         card->rx.b_element =
5336                                                 &card->qdio.in_q
5337                                                 ->bufs[card->rx.b_index]
5338                                                 .buffer->element[0];
5339                                         card->rx.e_offset = 0;
5340                                 }
5341                         }
5342
5343                         if (work_done >= budget)
5344                                 goto out;
5345                         else
5346                                 new_budget = budget - work_done;
5347                 }
5348         }
5349
5350         napi_complete(napi);
5351         if (qdio_start_irq(card->data.ccwdev, 0))
5352                 napi_schedule(&card->napi);
5353 out:
5354         if (card->options.performance_stats)
5355                 card->perf_stats.inbound_time += qeth_get_micros() -
5356                         card->perf_stats.inbound_start_time;
5357         return work_done;
5358 }
5359 EXPORT_SYMBOL_GPL(qeth_poll);
5360
5361 int qeth_setassparms_cb(struct qeth_card *card,
5362                         struct qeth_reply *reply, unsigned long data)
5363 {
5364         struct qeth_ipa_cmd *cmd;
5365
5366         QETH_CARD_TEXT(card, 4, "defadpcb");
5367
5368         cmd = (struct qeth_ipa_cmd *) data;
5369         if (cmd->hdr.return_code == 0) {
5370                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5371                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5372                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5373                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5374                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5375         }
5376         return 0;
5377 }
5378 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5379
5380 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5381                                                  enum qeth_ipa_funcs ipa_func,
5382                                                  __u16 cmd_code, __u16 len,
5383                                                  enum qeth_prot_versions prot)
5384 {
5385         struct qeth_cmd_buffer *iob;
5386         struct qeth_ipa_cmd *cmd;
5387
5388         QETH_CARD_TEXT(card, 4, "getasscm");
5389         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5390
5391         if (iob) {
5392                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5393                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5394                 cmd->data.setassparms.hdr.length = 8 + len;
5395                 cmd->data.setassparms.hdr.command_code = cmd_code;
5396                 cmd->data.setassparms.hdr.return_code = 0;
5397                 cmd->data.setassparms.hdr.seq_no = 0;
5398         }
5399
5400         return iob;
5401 }
5402 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5403
5404 int qeth_send_setassparms(struct qeth_card *card,
5405                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5406                           int (*reply_cb)(struct qeth_card *,
5407                                           struct qeth_reply *, unsigned long),
5408                           void *reply_param)
5409 {
5410         int rc;
5411         struct qeth_ipa_cmd *cmd;
5412
5413         QETH_CARD_TEXT(card, 4, "sendassp");
5414
5415         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5416         if (len <= sizeof(__u32))
5417                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5418         else   /* (len > sizeof(__u32)) */
5419                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5420
5421         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5422         return rc;
5423 }
5424 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5425
5426 int qeth_send_simple_setassparms(struct qeth_card *card,
5427                                  enum qeth_ipa_funcs ipa_func,
5428                                  __u16 cmd_code, long data)
5429 {
5430         int rc;
5431         int length = 0;
5432         struct qeth_cmd_buffer *iob;
5433
5434         QETH_CARD_TEXT(card, 4, "simassp4");
5435         if (data)
5436                 length = sizeof(__u32);
5437         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5438                                        length, QETH_PROT_IPV4);
5439         if (!iob)
5440                 return -ENOMEM;
5441         rc = qeth_send_setassparms(card, iob, length, data,
5442                                    qeth_setassparms_cb, NULL);
5443         return rc;
5444 }
5445 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5446
5447 static void qeth_unregister_dbf_views(void)
5448 {
5449         int x;
5450         for (x = 0; x < QETH_DBF_INFOS; x++) {
5451                 debug_unregister(qeth_dbf[x].id);
5452                 qeth_dbf[x].id = NULL;
5453         }
5454 }
5455
5456 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5457 {
5458         char dbf_txt_buf[32];
5459         va_list args;
5460
5461         if (!debug_level_enabled(id, level))
5462                 return;
5463         va_start(args, fmt);
5464         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5465         va_end(args);
5466         debug_text_event(id, level, dbf_txt_buf);
5467 }
5468 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5469
5470 static int qeth_register_dbf_views(void)
5471 {
5472         int ret;
5473         int x;
5474
5475         for (x = 0; x < QETH_DBF_INFOS; x++) {
5476                 /* register the areas */
5477                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5478                                                 qeth_dbf[x].pages,
5479                                                 qeth_dbf[x].areas,
5480                                                 qeth_dbf[x].len);
5481                 if (qeth_dbf[x].id == NULL) {
5482                         qeth_unregister_dbf_views();
5483                         return -ENOMEM;
5484                 }
5485
5486                 /* register a view */
5487                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5488                 if (ret) {
5489                         qeth_unregister_dbf_views();
5490                         return ret;
5491                 }
5492
5493                 /* set a passing level */
5494                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5495         }
5496
5497         return 0;
5498 }
5499
5500 int qeth_core_load_discipline(struct qeth_card *card,
5501                 enum qeth_discipline_id discipline)
5502 {
5503         int rc = 0;
5504         mutex_lock(&qeth_mod_mutex);
5505         switch (discipline) {
5506         case QETH_DISCIPLINE_LAYER3:
5507                 card->discipline = try_then_request_module(
5508                         symbol_get(qeth_l3_discipline), "qeth_l3");
5509                 break;
5510         case QETH_DISCIPLINE_LAYER2:
5511                 card->discipline = try_then_request_module(
5512                         symbol_get(qeth_l2_discipline), "qeth_l2");
5513                 break;
5514         }
5515         if (!card->discipline) {
5516                 dev_err(&card->gdev->dev, "There is no kernel module to "
5517                         "support discipline %d\n", discipline);
5518                 rc = -EINVAL;
5519         }
5520         mutex_unlock(&qeth_mod_mutex);
5521         return rc;
5522 }
5523
5524 void qeth_core_free_discipline(struct qeth_card *card)
5525 {
5526         if (card->options.layer2)
5527                 symbol_put(qeth_l2_discipline);
5528         else
5529                 symbol_put(qeth_l3_discipline);
5530         card->discipline = NULL;
5531 }
5532
5533 const struct device_type qeth_generic_devtype = {
5534         .name = "qeth_generic",
5535         .groups = qeth_generic_attr_groups,
5536 };
5537 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5538
5539 static const struct device_type qeth_osn_devtype = {
5540         .name = "qeth_osn",
5541         .groups = qeth_osn_attr_groups,
5542 };
5543
5544 #define DBF_NAME_LEN    20
5545
5546 struct qeth_dbf_entry {
5547         char dbf_name[DBF_NAME_LEN];
5548         debug_info_t *dbf_info;
5549         struct list_head dbf_list;
5550 };
5551
5552 static LIST_HEAD(qeth_dbf_list);
5553 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5554
5555 static debug_info_t *qeth_get_dbf_entry(char *name)
5556 {
5557         struct qeth_dbf_entry *entry;
5558         debug_info_t *rc = NULL;
5559
5560         mutex_lock(&qeth_dbf_list_mutex);
5561         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5562                 if (strcmp(entry->dbf_name, name) == 0) {
5563                         rc = entry->dbf_info;
5564                         break;
5565                 }
5566         }
5567         mutex_unlock(&qeth_dbf_list_mutex);
5568         return rc;
5569 }
5570
5571 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5572 {
5573         struct qeth_dbf_entry *new_entry;
5574
5575         card->debug = debug_register(name, 2, 1, 8);
5576         if (!card->debug) {
5577                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5578                 goto err;
5579         }
5580         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5581                 goto err_dbg;
5582         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5583         if (!new_entry)
5584                 goto err_dbg;
5585         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5586         new_entry->dbf_info = card->debug;
5587         mutex_lock(&qeth_dbf_list_mutex);
5588         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5589         mutex_unlock(&qeth_dbf_list_mutex);
5590
5591         return 0;
5592
5593 err_dbg:
5594         debug_unregister(card->debug);
5595 err:
5596         return -ENOMEM;
5597 }
5598
5599 static void qeth_clear_dbf_list(void)
5600 {
5601         struct qeth_dbf_entry *entry, *tmp;
5602
5603         mutex_lock(&qeth_dbf_list_mutex);
5604         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5605                 list_del(&entry->dbf_list);
5606                 debug_unregister(entry->dbf_info);
5607                 kfree(entry);
5608         }
5609         mutex_unlock(&qeth_dbf_list_mutex);
5610 }
5611
5612 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5613 {
5614         struct qeth_card *card;
5615         struct device *dev;
5616         int rc;
5617         unsigned long flags;
5618         char dbf_name[DBF_NAME_LEN];
5619
5620         QETH_DBF_TEXT(SETUP, 2, "probedev");
5621
5622         dev = &gdev->dev;
5623         if (!get_device(dev))
5624                 return -ENODEV;
5625
5626         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5627
5628         card = qeth_alloc_card();
5629         if (!card) {
5630                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5631                 rc = -ENOMEM;
5632                 goto err_dev;
5633         }
5634
5635         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5636                 dev_name(&gdev->dev));
5637         card->debug = qeth_get_dbf_entry(dbf_name);
5638         if (!card->debug) {
5639                 rc = qeth_add_dbf_entry(card, dbf_name);
5640                 if (rc)
5641                         goto err_card;
5642         }
5643
5644         card->read.ccwdev  = gdev->cdev[0];
5645         card->write.ccwdev = gdev->cdev[1];
5646         card->data.ccwdev  = gdev->cdev[2];
5647         dev_set_drvdata(&gdev->dev, card);
5648         card->gdev = gdev;
5649         gdev->cdev[0]->handler = qeth_irq;
5650         gdev->cdev[1]->handler = qeth_irq;
5651         gdev->cdev[2]->handler = qeth_irq;
5652
5653         rc = qeth_determine_card_type(card);
5654         if (rc) {
5655                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5656                 goto err_card;
5657         }
5658         rc = qeth_setup_card(card);
5659         if (rc) {
5660                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5661                 goto err_card;
5662         }
5663
5664         switch (card->info.type) {
5665         case QETH_CARD_TYPE_OSN:
5666         case QETH_CARD_TYPE_OSM:
5667                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5668                 if (rc)
5669                         goto err_card;
5670
5671                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5672                                         ? card->discipline->devtype
5673                                         : &qeth_osn_devtype;
5674                 rc = card->discipline->setup(card->gdev);
5675                 if (rc)
5676                         goto err_disc;
5677                 break;
5678         default:
5679                 gdev->dev.type = &qeth_generic_devtype;
5680                 break;
5681         }
5682
5683         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5684         list_add_tail(&card->list, &qeth_core_card_list.list);
5685         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5686
5687         qeth_determine_capabilities(card);
5688         return 0;
5689
5690 err_disc:
5691         qeth_core_free_discipline(card);
5692 err_card:
5693         qeth_core_free_card(card);
5694 err_dev:
5695         put_device(dev);
5696         return rc;
5697 }
5698
5699 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5700 {
5701         unsigned long flags;
5702         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5703
5704         QETH_DBF_TEXT(SETUP, 2, "removedv");
5705
5706         if (card->discipline) {
5707                 card->discipline->remove(gdev);
5708                 qeth_core_free_discipline(card);
5709         }
5710
5711         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5712         list_del(&card->list);
5713         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5714         qeth_core_free_card(card);
5715         dev_set_drvdata(&gdev->dev, NULL);
5716         put_device(&gdev->dev);
5717         return;
5718 }
5719
5720 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5721 {
5722         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5723         int rc = 0;
5724         int def_discipline;
5725
5726         if (!card->discipline) {
5727                 if (card->info.type == QETH_CARD_TYPE_IQD)
5728                         def_discipline = QETH_DISCIPLINE_LAYER3;
5729                 else
5730                         def_discipline = QETH_DISCIPLINE_LAYER2;
5731                 rc = qeth_core_load_discipline(card, def_discipline);
5732                 if (rc)
5733                         goto err;
5734                 rc = card->discipline->setup(card->gdev);
5735                 if (rc) {
5736                         qeth_core_free_discipline(card);
5737                         goto err;
5738                 }
5739         }
5740         rc = card->discipline->set_online(gdev);
5741 err:
5742         return rc;
5743 }
5744
5745 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5746 {
5747         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5748         return card->discipline->set_offline(gdev);
5749 }
5750
5751 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5752 {
5753         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5754         qeth_set_allowed_threads(card, 0, 1);
5755         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5756                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5757         qeth_qdio_clear_card(card, 0);
5758         qeth_clear_qdio_buffers(card);
5759         qdio_free(CARD_DDEV(card));
5760 }
5761
5762 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5763 {
5764         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5765         if (card->discipline && card->discipline->freeze)
5766                 return card->discipline->freeze(gdev);
5767         return 0;
5768 }
5769
5770 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5771 {
5772         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5773         if (card->discipline && card->discipline->thaw)
5774                 return card->discipline->thaw(gdev);
5775         return 0;
5776 }
5777
5778 static int qeth_core_restore(struct ccwgroup_device *gdev)
5779 {
5780         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5781         if (card->discipline && card->discipline->restore)
5782                 return card->discipline->restore(gdev);
5783         return 0;
5784 }
5785
5786 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5787         .driver = {
5788                 .owner = THIS_MODULE,
5789                 .name = "qeth",
5790         },
5791         .setup = qeth_core_probe_device,
5792         .remove = qeth_core_remove_device,
5793         .set_online = qeth_core_set_online,
5794         .set_offline = qeth_core_set_offline,
5795         .shutdown = qeth_core_shutdown,
5796         .prepare = NULL,
5797         .complete = NULL,
5798         .freeze = qeth_core_freeze,
5799         .thaw = qeth_core_thaw,
5800         .restore = qeth_core_restore,
5801 };
5802
5803 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5804                                             const char *buf, size_t count)
5805 {
5806         int err;
5807
5808         err = ccwgroup_create_dev(qeth_core_root_dev,
5809                                   &qeth_core_ccwgroup_driver, 3, buf);
5810
5811         return err ? err : count;
5812 }
5813 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5814
5815 static struct attribute *qeth_drv_attrs[] = {
5816         &driver_attr_group.attr,
5817         NULL,
5818 };
5819 static struct attribute_group qeth_drv_attr_group = {
5820         .attrs = qeth_drv_attrs,
5821 };
5822 static const struct attribute_group *qeth_drv_attr_groups[] = {
5823         &qeth_drv_attr_group,
5824         NULL,
5825 };
5826
5827 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5828 {
5829         struct qeth_card *card = dev->ml_priv;
5830         struct mii_ioctl_data *mii_data;
5831         int rc = 0;
5832
5833         if (!card)
5834                 return -ENODEV;
5835
5836         if (!qeth_card_hw_is_reachable(card))
5837                 return -ENODEV;
5838
5839         if (card->info.type == QETH_CARD_TYPE_OSN)
5840                 return -EPERM;
5841
5842         switch (cmd) {
5843         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5844                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5845                 break;
5846         case SIOC_QETH_GET_CARD_TYPE:
5847                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5848                      card->info.type == QETH_CARD_TYPE_OSM ||
5849                      card->info.type == QETH_CARD_TYPE_OSX) &&
5850                     !card->info.guestlan)
5851                         return 1;
5852                 else
5853                         return 0;
5854         case SIOCGMIIPHY:
5855                 mii_data = if_mii(rq);
5856                 mii_data->phy_id = 0;
5857                 break;
5858         case SIOCGMIIREG:
5859                 mii_data = if_mii(rq);
5860                 if (mii_data->phy_id != 0)
5861                         rc = -EINVAL;
5862                 else
5863                         mii_data->val_out = qeth_mdio_read(dev,
5864                                 mii_data->phy_id, mii_data->reg_num);
5865                 break;
5866         case SIOC_QETH_QUERY_OAT:
5867                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5868                 break;
5869         default:
5870                 if (card->discipline->do_ioctl)
5871                         rc = card->discipline->do_ioctl(dev, rq, cmd);
5872                 else
5873                         rc = -EOPNOTSUPP;
5874         }
5875         if (rc)
5876                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5877         return rc;
5878 }
5879 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5880
5881 static struct {
5882         const char str[ETH_GSTRING_LEN];
5883 } qeth_ethtool_stats_keys[] = {
5884 /*  0 */{"rx skbs"},
5885         {"rx buffers"},
5886         {"tx skbs"},
5887         {"tx buffers"},
5888         {"tx skbs no packing"},
5889         {"tx buffers no packing"},
5890         {"tx skbs packing"},
5891         {"tx buffers packing"},
5892         {"tx sg skbs"},
5893         {"tx sg frags"},
5894 /* 10 */{"rx sg skbs"},
5895         {"rx sg frags"},
5896         {"rx sg page allocs"},
5897         {"tx large kbytes"},
5898         {"tx large count"},
5899         {"tx pk state ch n->p"},
5900         {"tx pk state ch p->n"},
5901         {"tx pk watermark low"},
5902         {"tx pk watermark high"},
5903         {"queue 0 buffer usage"},
5904 /* 20 */{"queue 1 buffer usage"},
5905         {"queue 2 buffer usage"},
5906         {"queue 3 buffer usage"},
5907         {"rx poll time"},
5908         {"rx poll count"},
5909         {"rx do_QDIO time"},
5910         {"rx do_QDIO count"},
5911         {"tx handler time"},
5912         {"tx handler count"},
5913         {"tx time"},
5914 /* 30 */{"tx count"},
5915         {"tx do_QDIO time"},
5916         {"tx do_QDIO count"},
5917         {"tx csum"},
5918         {"tx lin"},
5919         {"tx linfail"},
5920         {"cq handler count"},
5921         {"cq handler time"}
5922 };
5923
5924 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5925 {
5926         switch (stringset) {
5927         case ETH_SS_STATS:
5928                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5929         default:
5930                 return -EINVAL;
5931         }
5932 }
5933 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5934
5935 void qeth_core_get_ethtool_stats(struct net_device *dev,
5936                 struct ethtool_stats *stats, u64 *data)
5937 {
5938         struct qeth_card *card = dev->ml_priv;
5939         data[0] = card->stats.rx_packets -
5940                                 card->perf_stats.initial_rx_packets;
5941         data[1] = card->perf_stats.bufs_rec;
5942         data[2] = card->stats.tx_packets -
5943                                 card->perf_stats.initial_tx_packets;
5944         data[3] = card->perf_stats.bufs_sent;
5945         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5946                         - card->perf_stats.skbs_sent_pack;
5947         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5948         data[6] = card->perf_stats.skbs_sent_pack;
5949         data[7] = card->perf_stats.bufs_sent_pack;
5950         data[8] = card->perf_stats.sg_skbs_sent;
5951         data[9] = card->perf_stats.sg_frags_sent;
5952         data[10] = card->perf_stats.sg_skbs_rx;
5953         data[11] = card->perf_stats.sg_frags_rx;
5954         data[12] = card->perf_stats.sg_alloc_page_rx;
5955         data[13] = (card->perf_stats.large_send_bytes >> 10);
5956         data[14] = card->perf_stats.large_send_cnt;
5957         data[15] = card->perf_stats.sc_dp_p;
5958         data[16] = card->perf_stats.sc_p_dp;
5959         data[17] = QETH_LOW_WATERMARK_PACK;
5960         data[18] = QETH_HIGH_WATERMARK_PACK;
5961         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5962         data[20] = (card->qdio.no_out_queues > 1) ?
5963                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5964         data[21] = (card->qdio.no_out_queues > 2) ?
5965                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5966         data[22] = (card->qdio.no_out_queues > 3) ?
5967                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5968         data[23] = card->perf_stats.inbound_time;
5969         data[24] = card->perf_stats.inbound_cnt;
5970         data[25] = card->perf_stats.inbound_do_qdio_time;
5971         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5972         data[27] = card->perf_stats.outbound_handler_time;
5973         data[28] = card->perf_stats.outbound_handler_cnt;
5974         data[29] = card->perf_stats.outbound_time;
5975         data[30] = card->perf_stats.outbound_cnt;
5976         data[31] = card->perf_stats.outbound_do_qdio_time;
5977         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5978         data[33] = card->perf_stats.tx_csum;
5979         data[34] = card->perf_stats.tx_lin;
5980         data[35] = card->perf_stats.tx_linfail;
5981         data[36] = card->perf_stats.cq_cnt;
5982         data[37] = card->perf_stats.cq_time;
5983 }
5984 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5985
5986 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5987 {
5988         switch (stringset) {
5989         case ETH_SS_STATS:
5990                 memcpy(data, &qeth_ethtool_stats_keys,
5991                         sizeof(qeth_ethtool_stats_keys));
5992                 break;
5993         default:
5994                 WARN_ON(1);
5995                 break;
5996         }
5997 }
5998 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5999
6000 void qeth_core_get_drvinfo(struct net_device *dev,
6001                 struct ethtool_drvinfo *info)
6002 {
6003         struct qeth_card *card = dev->ml_priv;
6004
6005         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6006                 sizeof(info->driver));
6007         strlcpy(info->version, "1.0", sizeof(info->version));
6008         strlcpy(info->fw_version, card->info.mcl_level,
6009                 sizeof(info->fw_version));
6010         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6011                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6012 }
6013 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6014
6015 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6016 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
6017 /* Always advertise and support all speeds up to specified, and only one     */
6018 /* specified port type.                                                      */
6019 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6020                                 int maxspeed, int porttype)
6021 {
6022         ethtool_link_ksettings_zero_link_mode(cmd, supported);
6023         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6024         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6025
6026         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6027         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6028
6029         switch (porttype) {
6030         case PORT_TP:
6031                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6032                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6033                 break;
6034         case PORT_FIBRE:
6035                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6036                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6037                 break;
6038         default:
6039                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6040                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6041                 WARN_ON_ONCE(1);
6042         }
6043
6044         /* fallthrough from high to low, to select all legal speeds: */
6045         switch (maxspeed) {
6046         case SPEED_10000:
6047                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6048                                                      10000baseT_Full);
6049                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6050                                                      10000baseT_Full);
6051         case SPEED_1000:
6052                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6053                                                      1000baseT_Full);
6054                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6055                                                      1000baseT_Full);
6056                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6057                                                      1000baseT_Half);
6058                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6059                                                      1000baseT_Half);
6060         case SPEED_100:
6061                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6062                                                      100baseT_Full);
6063                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6064                                                      100baseT_Full);
6065                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6066                                                      100baseT_Half);
6067                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6068                                                      100baseT_Half);
6069         case SPEED_10:
6070                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6071                                                      10baseT_Full);
6072                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6073                                                      10baseT_Full);
6074                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6075                                                      10baseT_Half);
6076                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6077                                                      10baseT_Half);
6078                 /* end fallthrough */
6079                 break;
6080         default:
6081                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6082                                                      10baseT_Full);
6083                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6084                                                      10baseT_Full);
6085                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6086                                                      10baseT_Half);
6087                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6088                                                      10baseT_Half);
6089                 WARN_ON_ONCE(1);
6090         }
6091 }
6092
6093 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6094                 struct ethtool_link_ksettings *cmd)
6095 {
6096         struct qeth_card *card = netdev->ml_priv;
6097         enum qeth_link_types link_type;
6098         struct carrier_info carrier_info;
6099         int rc;
6100
6101         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6102                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6103         else
6104                 link_type = card->info.link_type;
6105
6106         cmd->base.duplex = DUPLEX_FULL;
6107         cmd->base.autoneg = AUTONEG_ENABLE;
6108         cmd->base.phy_address = 0;
6109         cmd->base.mdio_support = 0;
6110         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6111         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6112
6113         switch (link_type) {
6114         case QETH_LINK_TYPE_FAST_ETH:
6115         case QETH_LINK_TYPE_LANE_ETH100:
6116                 cmd->base.speed = SPEED_100;
6117                 cmd->base.port = PORT_TP;
6118                 break;
6119         case QETH_LINK_TYPE_GBIT_ETH:
6120         case QETH_LINK_TYPE_LANE_ETH1000:
6121                 cmd->base.speed = SPEED_1000;
6122                 cmd->base.port = PORT_FIBRE;
6123                 break;
6124         case QETH_LINK_TYPE_10GBIT_ETH:
6125                 cmd->base.speed = SPEED_10000;
6126                 cmd->base.port = PORT_FIBRE;
6127                 break;
6128         default:
6129                 cmd->base.speed = SPEED_10;
6130                 cmd->base.port = PORT_TP;
6131         }
6132         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6133
6134         /* Check if we can obtain more accurate information.     */
6135         /* If QUERY_CARD_INFO command is not supported or fails, */
6136         /* just return the heuristics that was filled above.     */
6137         if (!qeth_card_hw_is_reachable(card))
6138                 return -ENODEV;
6139         rc = qeth_query_card_info(card, &carrier_info);
6140         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6141                 return 0;
6142         if (rc) /* report error from the hardware operation */
6143                 return rc;
6144         /* on success, fill in the information got from the hardware */
6145
6146         netdev_dbg(netdev,
6147         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6148                         carrier_info.card_type,
6149                         carrier_info.port_mode,
6150                         carrier_info.port_speed);
6151
6152         /* Update attributes for which we've obtained more authoritative */
6153         /* information, leave the rest the way they where filled above.  */
6154         switch (carrier_info.card_type) {
6155         case CARD_INFO_TYPE_1G_COPPER_A:
6156         case CARD_INFO_TYPE_1G_COPPER_B:
6157                 cmd->base.port = PORT_TP;
6158                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6159                 break;
6160         case CARD_INFO_TYPE_1G_FIBRE_A:
6161         case CARD_INFO_TYPE_1G_FIBRE_B:
6162                 cmd->base.port = PORT_FIBRE;
6163                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6164                 break;
6165         case CARD_INFO_TYPE_10G_FIBRE_A:
6166         case CARD_INFO_TYPE_10G_FIBRE_B:
6167                 cmd->base.port = PORT_FIBRE;
6168                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6169                 break;
6170         }
6171
6172         switch (carrier_info.port_mode) {
6173         case CARD_INFO_PORTM_FULLDUPLEX:
6174                 cmd->base.duplex = DUPLEX_FULL;
6175                 break;
6176         case CARD_INFO_PORTM_HALFDUPLEX:
6177                 cmd->base.duplex = DUPLEX_HALF;
6178                 break;
6179         }
6180
6181         switch (carrier_info.port_speed) {
6182         case CARD_INFO_PORTS_10M:
6183                 cmd->base.speed = SPEED_10;
6184                 break;
6185         case CARD_INFO_PORTS_100M:
6186                 cmd->base.speed = SPEED_100;
6187                 break;
6188         case CARD_INFO_PORTS_1G:
6189                 cmd->base.speed = SPEED_1000;
6190                 break;
6191         case CARD_INFO_PORTS_10G:
6192                 cmd->base.speed = SPEED_10000;
6193                 break;
6194         }
6195
6196         return 0;
6197 }
6198 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6199
6200 /* Callback to handle checksum offload command reply from OSA card.
6201  * Verify that required features have been enabled on the card.
6202  * Return error in hdr->return_code as this value is checked by caller.
6203  *
6204  * Always returns zero to indicate no further messages from the OSA card.
6205  */
6206 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6207                                         struct qeth_reply *reply,
6208                                         unsigned long data)
6209 {
6210         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6211         struct qeth_checksum_cmd *chksum_cb =
6212                                 (struct qeth_checksum_cmd *)reply->param;
6213
6214         QETH_CARD_TEXT(card, 4, "chkdoccb");
6215         if (cmd->hdr.return_code)
6216                 return 0;
6217
6218         memset(chksum_cb, 0, sizeof(*chksum_cb));
6219         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6220                 chksum_cb->supported =
6221                                 cmd->data.setassparms.data.chksum.supported;
6222                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6223         }
6224         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6225                 chksum_cb->supported =
6226                                 cmd->data.setassparms.data.chksum.supported;
6227                 chksum_cb->enabled =
6228                                 cmd->data.setassparms.data.chksum.enabled;
6229                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6230                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6231         }
6232         return 0;
6233 }
6234
6235 /* Send command to OSA card and check results. */
6236 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6237                                      enum qeth_ipa_funcs ipa_func,
6238                                      __u16 cmd_code, long data,
6239                                      struct qeth_checksum_cmd *chksum_cb)
6240 {
6241         struct qeth_cmd_buffer *iob;
6242         int rc = -ENOMEM;
6243
6244         QETH_CARD_TEXT(card, 4, "chkdocmd");
6245         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6246                                        sizeof(__u32), QETH_PROT_IPV4);
6247         if (iob)
6248                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6249                                            qeth_ipa_checksum_run_cmd_cb,
6250                                            chksum_cb);
6251         return rc;
6252 }
6253
6254 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6255 {
6256         const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6257                                         QETH_IPA_CHECKSUM_UDP |
6258                                         QETH_IPA_CHECKSUM_TCP;
6259         struct qeth_checksum_cmd chksum_cb;
6260         int rc;
6261
6262         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6263                                        &chksum_cb);
6264         if (!rc) {
6265                 if ((required_features & chksum_cb.supported) !=
6266                     required_features)
6267                         rc = -EIO;
6268                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6269                          cstype == IPA_INBOUND_CHECKSUM)
6270                         dev_warn(&card->gdev->dev,
6271                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6272                                  QETH_CARD_IFNAME(card));
6273         }
6274         if (rc) {
6275                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6276                 dev_warn(&card->gdev->dev,
6277                          "Starting HW checksumming for %s failed, using SW checksumming\n",
6278                          QETH_CARD_IFNAME(card));
6279                 return rc;
6280         }
6281         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6282                                        chksum_cb.supported, &chksum_cb);
6283         if (!rc) {
6284                 if ((required_features & chksum_cb.enabled) !=
6285                     required_features)
6286                         rc = -EIO;
6287         }
6288         if (rc) {
6289                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6290                 dev_warn(&card->gdev->dev,
6291                          "Enabling HW checksumming for %s failed, using SW checksumming\n",
6292                          QETH_CARD_IFNAME(card));
6293                 return rc;
6294         }
6295
6296         dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6297                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6298         return 0;
6299 }
6300
6301 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6302 {
6303         int rc = (on) ? qeth_send_checksum_on(card, cstype)
6304                       : qeth_send_simple_setassparms(card, cstype,
6305                                                      IPA_CMD_ASS_STOP, 0);
6306         return rc ? -EIO : 0;
6307 }
6308
6309 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6310 {
6311         int rc;
6312
6313         QETH_CARD_TEXT(card, 3, "sttso");
6314
6315         if (on) {
6316                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6317                                                   IPA_CMD_ASS_START, 0);
6318                 if (rc) {
6319                         dev_warn(&card->gdev->dev,
6320                                  "Starting outbound TCP segmentation offload for %s failed\n",
6321                                  QETH_CARD_IFNAME(card));
6322                         return -EIO;
6323                 }
6324                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6325         } else {
6326                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6327                                                   IPA_CMD_ASS_STOP, 0);
6328         }
6329         return rc;
6330 }
6331
6332 /* try to restore device features on a device after recovery */
6333 int qeth_recover_features(struct net_device *dev)
6334 {
6335         struct qeth_card *card = dev->ml_priv;
6336         netdev_features_t recover = dev->features;
6337
6338         if (recover & NETIF_F_IP_CSUM) {
6339                 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
6340                         recover ^= NETIF_F_IP_CSUM;
6341         }
6342         if (recover & NETIF_F_RXCSUM) {
6343                 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
6344                         recover ^= NETIF_F_RXCSUM;
6345         }
6346         if (recover & NETIF_F_TSO) {
6347                 if (qeth_set_ipa_tso(card, 1))
6348                         recover ^= NETIF_F_TSO;
6349         }
6350
6351         if (recover == dev->features)
6352                 return 0;
6353
6354         dev_warn(&card->gdev->dev,
6355                  "Device recovery failed to restore all offload features\n");
6356         dev->features = recover;
6357         return -EIO;
6358 }
6359 EXPORT_SYMBOL_GPL(qeth_recover_features);
6360
6361 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6362 {
6363         struct qeth_card *card = dev->ml_priv;
6364         netdev_features_t changed = dev->features ^ features;
6365         int rc = 0;
6366
6367         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6368         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6369
6370         if ((changed & NETIF_F_IP_CSUM)) {
6371                 rc = qeth_set_ipa_csum(card,
6372                                        features & NETIF_F_IP_CSUM ? 1 : 0,
6373                                        IPA_OUTBOUND_CHECKSUM);
6374                 if (rc)
6375                         changed ^= NETIF_F_IP_CSUM;
6376         }
6377         if ((changed & NETIF_F_RXCSUM)) {
6378                 rc = qeth_set_ipa_csum(card,
6379                                         features & NETIF_F_RXCSUM ? 1 : 0,
6380                                         IPA_INBOUND_CHECKSUM);
6381                 if (rc)
6382                         changed ^= NETIF_F_RXCSUM;
6383         }
6384         if ((changed & NETIF_F_TSO)) {
6385                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6386                 if (rc)
6387                         changed ^= NETIF_F_TSO;
6388         }
6389
6390         /* everything changed successfully? */
6391         if ((dev->features ^ features) == changed)
6392                 return 0;
6393         /* something went wrong. save changed features and return error */
6394         dev->features ^= changed;
6395         return -EIO;
6396 }
6397 EXPORT_SYMBOL_GPL(qeth_set_features);
6398
6399 netdev_features_t qeth_fix_features(struct net_device *dev,
6400                                     netdev_features_t features)
6401 {
6402         struct qeth_card *card = dev->ml_priv;
6403
6404         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6405         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6406                 features &= ~NETIF_F_IP_CSUM;
6407         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6408                 features &= ~NETIF_F_RXCSUM;
6409         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
6410                 features &= ~NETIF_F_TSO;
6411                 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n",
6412                          QETH_CARD_IFNAME(card));
6413         }
6414         /* if the card isn't up, remove features that require hw changes */
6415         if (card->state == CARD_STATE_DOWN ||
6416             card->state == CARD_STATE_RECOVER)
6417                 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
6418                                         NETIF_F_TSO);
6419         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6420         return features;
6421 }
6422 EXPORT_SYMBOL_GPL(qeth_fix_features);
6423
6424 static int __init qeth_core_init(void)
6425 {
6426         int rc;
6427
6428         pr_info("loading core functions\n");
6429         INIT_LIST_HEAD(&qeth_core_card_list.list);
6430         INIT_LIST_HEAD(&qeth_dbf_list);
6431         rwlock_init(&qeth_core_card_list.rwlock);
6432         mutex_init(&qeth_mod_mutex);
6433
6434         qeth_wq = create_singlethread_workqueue("qeth_wq");
6435
6436         rc = qeth_register_dbf_views();
6437         if (rc)
6438                 goto out_err;
6439         qeth_core_root_dev = root_device_register("qeth");
6440         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6441         if (rc)
6442                 goto register_err;
6443         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6444                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6445         if (!qeth_core_header_cache) {
6446                 rc = -ENOMEM;
6447                 goto slab_err;
6448         }
6449         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6450                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6451         if (!qeth_qdio_outbuf_cache) {
6452                 rc = -ENOMEM;
6453                 goto cqslab_err;
6454         }
6455         rc = ccw_driver_register(&qeth_ccw_driver);
6456         if (rc)
6457                 goto ccw_err;
6458         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6459         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6460         if (rc)
6461                 goto ccwgroup_err;
6462
6463         return 0;
6464
6465 ccwgroup_err:
6466         ccw_driver_unregister(&qeth_ccw_driver);
6467 ccw_err:
6468         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6469 cqslab_err:
6470         kmem_cache_destroy(qeth_core_header_cache);
6471 slab_err:
6472         root_device_unregister(qeth_core_root_dev);
6473 register_err:
6474         qeth_unregister_dbf_views();
6475 out_err:
6476         pr_err("Initializing the qeth device driver failed\n");
6477         return rc;
6478 }
6479
6480 static void __exit qeth_core_exit(void)
6481 {
6482         qeth_clear_dbf_list();
6483         destroy_workqueue(qeth_wq);
6484         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6485         ccw_driver_unregister(&qeth_ccw_driver);
6486         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6487         kmem_cache_destroy(qeth_core_header_cache);
6488         root_device_unregister(qeth_core_root_dev);
6489         qeth_unregister_dbf_views();
6490         pr_info("core functions removed\n");
6491 }
6492
6493 module_init(qeth_core_init);
6494 module_exit(qeth_core_exit);
6495 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6496 MODULE_DESCRIPTION("qeth core functions");
6497 MODULE_LICENSE("GPL");