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 (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 && skb->protocol == ETH_P_AF_IUCV) {
1236                         if (skb->sk) {
1237                                 iucv = iucv_sk(skb->sk);
1238                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1239                         }
1240                 }
1241                 atomic_dec(&skb->users);
1242                 dev_kfree_skb_any(skb);
1243                 skb = skb_dequeue(&buf->skb_list);
1244         }
1245 }
1246
1247 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1248                 struct qeth_qdio_out_buffer *buf,
1249                 enum qeth_qdio_buffer_states newbufstate)
1250 {
1251         int i;
1252
1253         /* is PCI flag set on buffer? */
1254         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1255                 atomic_dec(&queue->set_pci_flags_count);
1256
1257         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1258                 qeth_release_skbs(buf);
1259         }
1260         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1261                 if (buf->buffer->element[i].addr && buf->is_header[i])
1262                         kmem_cache_free(qeth_core_header_cache,
1263                                 buf->buffer->element[i].addr);
1264                 buf->is_header[i] = 0;
1265                 buf->buffer->element[i].length = 0;
1266                 buf->buffer->element[i].addr = NULL;
1267                 buf->buffer->element[i].eflags = 0;
1268                 buf->buffer->element[i].sflags = 0;
1269         }
1270         buf->buffer->element[15].eflags = 0;
1271         buf->buffer->element[15].sflags = 0;
1272         buf->next_element_to_fill = 0;
1273         atomic_set(&buf->state, newbufstate);
1274 }
1275
1276 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1277 {
1278         int j;
1279
1280         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1281                 if (!q->bufs[j])
1282                         continue;
1283                 qeth_cleanup_handled_pending(q, j, 1);
1284                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1285                 if (free) {
1286                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1287                         q->bufs[j] = NULL;
1288                 }
1289         }
1290 }
1291
1292 void qeth_clear_qdio_buffers(struct qeth_card *card)
1293 {
1294         int i;
1295
1296         QETH_CARD_TEXT(card, 2, "clearqdbf");
1297         /* clear outbound buffers to free skbs */
1298         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1299                 if (card->qdio.out_qs[i]) {
1300                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1301                 }
1302         }
1303 }
1304 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1305
1306 static void qeth_free_buffer_pool(struct qeth_card *card)
1307 {
1308         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1309         int i = 0;
1310         list_for_each_entry_safe(pool_entry, tmp,
1311                                  &card->qdio.init_pool.entry_list, init_list){
1312                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1313                         free_page((unsigned long)pool_entry->elements[i]);
1314                 list_del(&pool_entry->init_list);
1315                 kfree(pool_entry);
1316         }
1317 }
1318
1319 static void qeth_clean_channel(struct qeth_channel *channel)
1320 {
1321         int cnt;
1322
1323         QETH_DBF_TEXT(SETUP, 2, "freech");
1324         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1325                 kfree(channel->iob[cnt].data);
1326 }
1327
1328 static void qeth_set_single_write_queues(struct qeth_card *card)
1329 {
1330         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1331             (card->qdio.no_out_queues == 4))
1332                 qeth_free_qdio_buffers(card);
1333
1334         card->qdio.no_out_queues = 1;
1335         if (card->qdio.default_out_queue != 0)
1336                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1337
1338         card->qdio.default_out_queue = 0;
1339 }
1340
1341 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1342 {
1343         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1344             (card->qdio.no_out_queues == 1)) {
1345                 qeth_free_qdio_buffers(card);
1346                 card->qdio.default_out_queue = 2;
1347         }
1348         card->qdio.no_out_queues = 4;
1349 }
1350
1351 static void qeth_update_from_chp_desc(struct qeth_card *card)
1352 {
1353         struct ccw_device *ccwdev;
1354         struct channel_path_desc *chp_dsc;
1355
1356         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1357
1358         ccwdev = card->data.ccwdev;
1359         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1360         if (!chp_dsc)
1361                 goto out;
1362
1363         card->info.func_level = 0x4100 + chp_dsc->desc;
1364         if (card->info.type == QETH_CARD_TYPE_IQD)
1365                 goto out;
1366
1367         /* CHPP field bit 6 == 1 -> single queue */
1368         if ((chp_dsc->chpp & 0x02) == 0x02)
1369                 qeth_set_single_write_queues(card);
1370         else
1371                 qeth_set_multiple_write_queues(card);
1372 out:
1373         kfree(chp_dsc);
1374         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1375         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1376 }
1377
1378 static void qeth_init_qdio_info(struct qeth_card *card)
1379 {
1380         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1381         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1382         /* inbound */
1383         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1384         if (card->info.type == QETH_CARD_TYPE_IQD)
1385                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1386         else
1387                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1388         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1389         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1390         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1391 }
1392
1393 static void qeth_set_intial_options(struct qeth_card *card)
1394 {
1395         card->options.route4.type = NO_ROUTER;
1396         card->options.route6.type = NO_ROUTER;
1397         card->options.fake_broadcast = 0;
1398         card->options.performance_stats = 0;
1399         card->options.rx_sg_cb = QETH_RX_SG_CB;
1400         card->options.isolation = ISOLATION_MODE_NONE;
1401         card->options.cq = QETH_CQ_DISABLED;
1402 }
1403
1404 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1405 {
1406         unsigned long flags;
1407         int rc = 0;
1408
1409         spin_lock_irqsave(&card->thread_mask_lock, flags);
1410         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1411                         (u8) card->thread_start_mask,
1412                         (u8) card->thread_allowed_mask,
1413                         (u8) card->thread_running_mask);
1414         rc = (card->thread_start_mask & thread);
1415         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1416         return rc;
1417 }
1418
1419 static void qeth_start_kernel_thread(struct work_struct *work)
1420 {
1421         struct task_struct *ts;
1422         struct qeth_card *card = container_of(work, struct qeth_card,
1423                                         kernel_thread_starter);
1424         QETH_CARD_TEXT(card , 2, "strthrd");
1425
1426         if (card->read.state != CH_STATE_UP &&
1427             card->write.state != CH_STATE_UP)
1428                 return;
1429         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1430                 ts = kthread_run(card->discipline->recover, (void *)card,
1431                                 "qeth_recover");
1432                 if (IS_ERR(ts)) {
1433                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1434                         qeth_clear_thread_running_bit(card,
1435                                 QETH_RECOVER_THREAD);
1436                 }
1437         }
1438 }
1439
1440 static void qeth_buffer_reclaim_work(struct work_struct *);
1441 static int qeth_setup_card(struct qeth_card *card)
1442 {
1443
1444         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1445         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1446
1447         card->read.state  = CH_STATE_DOWN;
1448         card->write.state = CH_STATE_DOWN;
1449         card->data.state  = CH_STATE_DOWN;
1450         card->state = CARD_STATE_DOWN;
1451         card->lan_online = 0;
1452         card->read_or_write_problem = 0;
1453         card->dev = NULL;
1454         spin_lock_init(&card->vlanlock);
1455         spin_lock_init(&card->mclock);
1456         spin_lock_init(&card->lock);
1457         spin_lock_init(&card->ip_lock);
1458         spin_lock_init(&card->thread_mask_lock);
1459         mutex_init(&card->conf_mutex);
1460         mutex_init(&card->discipline_mutex);
1461         card->thread_start_mask = 0;
1462         card->thread_allowed_mask = 0;
1463         card->thread_running_mask = 0;
1464         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1465         INIT_LIST_HEAD(&card->cmd_waiter_list);
1466         init_waitqueue_head(&card->wait_q);
1467         /* initial options */
1468         qeth_set_intial_options(card);
1469         /* IP address takeover */
1470         INIT_LIST_HEAD(&card->ipato.entries);
1471         card->ipato.enabled = 0;
1472         card->ipato.invert4 = 0;
1473         card->ipato.invert6 = 0;
1474         /* init QDIO stuff */
1475         qeth_init_qdio_info(card);
1476         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1477         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1478         return 0;
1479 }
1480
1481 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1482 {
1483         struct qeth_card *card = container_of(slr, struct qeth_card,
1484                                         qeth_service_level);
1485         if (card->info.mcl_level[0])
1486                 seq_printf(m, "qeth: %s firmware level %s\n",
1487                         CARD_BUS_ID(card), card->info.mcl_level);
1488 }
1489
1490 static struct qeth_card *qeth_alloc_card(void)
1491 {
1492         struct qeth_card *card;
1493
1494         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1495         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1496         if (!card)
1497                 goto out;
1498         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1499         if (qeth_setup_channel(&card->read))
1500                 goto out_ip;
1501         if (qeth_setup_channel(&card->write))
1502                 goto out_channel;
1503         card->options.layer2 = -1;
1504         card->qeth_service_level.seq_print = qeth_core_sl_print;
1505         register_service_level(&card->qeth_service_level);
1506         return card;
1507
1508 out_channel:
1509         qeth_clean_channel(&card->read);
1510 out_ip:
1511         kfree(card);
1512 out:
1513         return NULL;
1514 }
1515
1516 static int qeth_determine_card_type(struct qeth_card *card)
1517 {
1518         int i = 0;
1519
1520         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1521
1522         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1523         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1524         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1525                 if ((CARD_RDEV(card)->id.dev_type ==
1526                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1527                     (CARD_RDEV(card)->id.dev_model ==
1528                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1529                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1530                         card->qdio.no_out_queues =
1531                                 known_devices[i][QETH_QUEUE_NO_IND];
1532                         card->qdio.no_in_queues = 1;
1533                         card->info.is_multicast_different =
1534                                 known_devices[i][QETH_MULTICAST_IND];
1535                         qeth_update_from_chp_desc(card);
1536                         return 0;
1537                 }
1538                 i++;
1539         }
1540         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1541         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1542                 "unknown type\n");
1543         return -ENOENT;
1544 }
1545
1546 static int qeth_clear_channel(struct qeth_channel *channel)
1547 {
1548         unsigned long flags;
1549         struct qeth_card *card;
1550         int rc;
1551
1552         card = CARD_FROM_CDEV(channel->ccwdev);
1553         QETH_CARD_TEXT(card, 3, "clearch");
1554         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1555         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1556         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1557
1558         if (rc)
1559                 return rc;
1560         rc = wait_event_interruptible_timeout(card->wait_q,
1561                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1562         if (rc == -ERESTARTSYS)
1563                 return rc;
1564         if (channel->state != CH_STATE_STOPPED)
1565                 return -ETIME;
1566         channel->state = CH_STATE_DOWN;
1567         return 0;
1568 }
1569
1570 static int qeth_halt_channel(struct qeth_channel *channel)
1571 {
1572         unsigned long flags;
1573         struct qeth_card *card;
1574         int rc;
1575
1576         card = CARD_FROM_CDEV(channel->ccwdev);
1577         QETH_CARD_TEXT(card, 3, "haltch");
1578         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1579         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1580         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1581
1582         if (rc)
1583                 return rc;
1584         rc = wait_event_interruptible_timeout(card->wait_q,
1585                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1586         if (rc == -ERESTARTSYS)
1587                 return rc;
1588         if (channel->state != CH_STATE_HALTED)
1589                 return -ETIME;
1590         return 0;
1591 }
1592
1593 static int qeth_halt_channels(struct qeth_card *card)
1594 {
1595         int rc1 = 0, rc2 = 0, rc3 = 0;
1596
1597         QETH_CARD_TEXT(card, 3, "haltchs");
1598         rc1 = qeth_halt_channel(&card->read);
1599         rc2 = qeth_halt_channel(&card->write);
1600         rc3 = qeth_halt_channel(&card->data);
1601         if (rc1)
1602                 return rc1;
1603         if (rc2)
1604                 return rc2;
1605         return rc3;
1606 }
1607
1608 static int qeth_clear_channels(struct qeth_card *card)
1609 {
1610         int rc1 = 0, rc2 = 0, rc3 = 0;
1611
1612         QETH_CARD_TEXT(card, 3, "clearchs");
1613         rc1 = qeth_clear_channel(&card->read);
1614         rc2 = qeth_clear_channel(&card->write);
1615         rc3 = qeth_clear_channel(&card->data);
1616         if (rc1)
1617                 return rc1;
1618         if (rc2)
1619                 return rc2;
1620         return rc3;
1621 }
1622
1623 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1624 {
1625         int rc = 0;
1626
1627         QETH_CARD_TEXT(card, 3, "clhacrd");
1628
1629         if (halt)
1630                 rc = qeth_halt_channels(card);
1631         if (rc)
1632                 return rc;
1633         return qeth_clear_channels(card);
1634 }
1635
1636 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1637 {
1638         int rc = 0;
1639
1640         QETH_CARD_TEXT(card, 3, "qdioclr");
1641         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1642                 QETH_QDIO_CLEANING)) {
1643         case QETH_QDIO_ESTABLISHED:
1644                 if (card->info.type == QETH_CARD_TYPE_IQD)
1645                         rc = qdio_shutdown(CARD_DDEV(card),
1646                                 QDIO_FLAG_CLEANUP_USING_HALT);
1647                 else
1648                         rc = qdio_shutdown(CARD_DDEV(card),
1649                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1650                 if (rc)
1651                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1652                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1653                 break;
1654         case QETH_QDIO_CLEANING:
1655                 return rc;
1656         default:
1657                 break;
1658         }
1659         rc = qeth_clear_halt_card(card, use_halt);
1660         if (rc)
1661                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1662         card->state = CARD_STATE_DOWN;
1663         return rc;
1664 }
1665 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1666
1667 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1668                                int *length)
1669 {
1670         struct ciw *ciw;
1671         char *rcd_buf;
1672         int ret;
1673         struct qeth_channel *channel = &card->data;
1674         unsigned long flags;
1675
1676         /*
1677          * scan for RCD command in extended SenseID data
1678          */
1679         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1680         if (!ciw || ciw->cmd == 0)
1681                 return -EOPNOTSUPP;
1682         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1683         if (!rcd_buf)
1684                 return -ENOMEM;
1685
1686         channel->ccw.cmd_code = ciw->cmd;
1687         channel->ccw.cda = (__u32) __pa(rcd_buf);
1688         channel->ccw.count = ciw->count;
1689         channel->ccw.flags = CCW_FLAG_SLI;
1690         channel->state = CH_STATE_RCD;
1691         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1692         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1693                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1694                                        QETH_RCD_TIMEOUT);
1695         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1696         if (!ret)
1697                 wait_event(card->wait_q,
1698                            (channel->state == CH_STATE_RCD_DONE ||
1699                             channel->state == CH_STATE_DOWN));
1700         if (channel->state == CH_STATE_DOWN)
1701                 ret = -EIO;
1702         else
1703                 channel->state = CH_STATE_DOWN;
1704         if (ret) {
1705                 kfree(rcd_buf);
1706                 *buffer = NULL;
1707                 *length = 0;
1708         } else {
1709                 *length = ciw->count;
1710                 *buffer = rcd_buf;
1711         }
1712         return ret;
1713 }
1714
1715 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1716 {
1717         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1718         card->info.chpid = prcd[30];
1719         card->info.unit_addr2 = prcd[31];
1720         card->info.cula = prcd[63];
1721         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1722                                (prcd[0x11] == _ascebc['M']));
1723 }
1724
1725 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1726 {
1727         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1728
1729         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1730             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1731                 card->info.blkt.time_total = 0;
1732                 card->info.blkt.inter_packet = 0;
1733                 card->info.blkt.inter_packet_jumbo = 0;
1734         } else {
1735                 card->info.blkt.time_total = 250;
1736                 card->info.blkt.inter_packet = 5;
1737                 card->info.blkt.inter_packet_jumbo = 15;
1738         }
1739 }
1740
1741 static void qeth_init_tokens(struct qeth_card *card)
1742 {
1743         card->token.issuer_rm_w = 0x00010103UL;
1744         card->token.cm_filter_w = 0x00010108UL;
1745         card->token.cm_connection_w = 0x0001010aUL;
1746         card->token.ulp_filter_w = 0x0001010bUL;
1747         card->token.ulp_connection_w = 0x0001010dUL;
1748 }
1749
1750 static void qeth_init_func_level(struct qeth_card *card)
1751 {
1752         switch (card->info.type) {
1753         case QETH_CARD_TYPE_IQD:
1754                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1755                 break;
1756         case QETH_CARD_TYPE_OSD:
1757         case QETH_CARD_TYPE_OSN:
1758                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1759                 break;
1760         default:
1761                 break;
1762         }
1763 }
1764
1765 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1766                 void (*idx_reply_cb)(struct qeth_channel *,
1767                         struct qeth_cmd_buffer *))
1768 {
1769         struct qeth_cmd_buffer *iob;
1770         unsigned long flags;
1771         int rc;
1772         struct qeth_card *card;
1773
1774         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1775         card = CARD_FROM_CDEV(channel->ccwdev);
1776         iob = qeth_get_buffer(channel);
1777         if (!iob)
1778                 return -ENOMEM;
1779         iob->callback = idx_reply_cb;
1780         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1781         channel->ccw.count = QETH_BUFSIZE;
1782         channel->ccw.cda = (__u32) __pa(iob->data);
1783
1784         wait_event(card->wait_q,
1785                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1786         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1787         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1788         rc = ccw_device_start(channel->ccwdev,
1789                               &channel->ccw, (addr_t) iob, 0, 0);
1790         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1791
1792         if (rc) {
1793                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1794                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1795                 atomic_set(&channel->irq_pending, 0);
1796                 wake_up(&card->wait_q);
1797                 return rc;
1798         }
1799         rc = wait_event_interruptible_timeout(card->wait_q,
1800                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1801         if (rc == -ERESTARTSYS)
1802                 return rc;
1803         if (channel->state != CH_STATE_UP) {
1804                 rc = -ETIME;
1805                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1806                 qeth_clear_cmd_buffers(channel);
1807         } else
1808                 rc = 0;
1809         return rc;
1810 }
1811
1812 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1813                 void (*idx_reply_cb)(struct qeth_channel *,
1814                         struct qeth_cmd_buffer *))
1815 {
1816         struct qeth_card *card;
1817         struct qeth_cmd_buffer *iob;
1818         unsigned long flags;
1819         __u16 temp;
1820         __u8 tmp;
1821         int rc;
1822         struct ccw_dev_id temp_devid;
1823
1824         card = CARD_FROM_CDEV(channel->ccwdev);
1825
1826         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1827
1828         iob = qeth_get_buffer(channel);
1829         if (!iob)
1830                 return -ENOMEM;
1831         iob->callback = idx_reply_cb;
1832         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1833         channel->ccw.count = IDX_ACTIVATE_SIZE;
1834         channel->ccw.cda = (__u32) __pa(iob->data);
1835         if (channel == &card->write) {
1836                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1837                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1838                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1839                 card->seqno.trans_hdr++;
1840         } else {
1841                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1842                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1843                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1844         }
1845         tmp = ((__u8)card->info.portno) | 0x80;
1846         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1847         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1848                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1849         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1850                &card->info.func_level, sizeof(__u16));
1851         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1852         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1853         temp = (card->info.cula << 8) + card->info.unit_addr2;
1854         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1855
1856         wait_event(card->wait_q,
1857                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1858         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1859         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1860         rc = ccw_device_start(channel->ccwdev,
1861                               &channel->ccw, (addr_t) iob, 0, 0);
1862         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1863
1864         if (rc) {
1865                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1866                         rc);
1867                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1868                 atomic_set(&channel->irq_pending, 0);
1869                 wake_up(&card->wait_q);
1870                 return rc;
1871         }
1872         rc = wait_event_interruptible_timeout(card->wait_q,
1873                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1874         if (rc == -ERESTARTSYS)
1875                 return rc;
1876         if (channel->state != CH_STATE_ACTIVATING) {
1877                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1878                         " failed to recover an error on the device\n");
1879                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1880                         dev_name(&channel->ccwdev->dev));
1881                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1882                 qeth_clear_cmd_buffers(channel);
1883                 return -ETIME;
1884         }
1885         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1886 }
1887
1888 static int qeth_peer_func_level(int level)
1889 {
1890         if ((level & 0xff) == 8)
1891                 return (level & 0xff) + 0x400;
1892         if (((level >> 8) & 3) == 1)
1893                 return (level & 0xff) + 0x200;
1894         return level;
1895 }
1896
1897 static void qeth_idx_write_cb(struct qeth_channel *channel,
1898                 struct qeth_cmd_buffer *iob)
1899 {
1900         struct qeth_card *card;
1901         __u16 temp;
1902
1903         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1904
1905         if (channel->state == CH_STATE_DOWN) {
1906                 channel->state = CH_STATE_ACTIVATING;
1907                 goto out;
1908         }
1909         card = CARD_FROM_CDEV(channel->ccwdev);
1910
1911         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1912                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1913                         dev_err(&card->write.ccwdev->dev,
1914                                 "The adapter is used exclusively by another "
1915                                 "host\n");
1916                 else
1917                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1918                                 " negative reply\n",
1919                                 dev_name(&card->write.ccwdev->dev));
1920                 goto out;
1921         }
1922         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1923         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1924                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1925                         "function level mismatch (sent: 0x%x, received: "
1926                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1927                         card->info.func_level, temp);
1928                 goto out;
1929         }
1930         channel->state = CH_STATE_UP;
1931 out:
1932         qeth_release_buffer(channel, iob);
1933 }
1934
1935 static void qeth_idx_read_cb(struct qeth_channel *channel,
1936                 struct qeth_cmd_buffer *iob)
1937 {
1938         struct qeth_card *card;
1939         __u16 temp;
1940
1941         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1942         if (channel->state == CH_STATE_DOWN) {
1943                 channel->state = CH_STATE_ACTIVATING;
1944                 goto out;
1945         }
1946
1947         card = CARD_FROM_CDEV(channel->ccwdev);
1948         if (qeth_check_idx_response(card, iob->data))
1949                         goto out;
1950
1951         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1952                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1953                 case QETH_IDX_ACT_ERR_EXCL:
1954                         dev_err(&card->write.ccwdev->dev,
1955                                 "The adapter is used exclusively by another "
1956                                 "host\n");
1957                         break;
1958                 case QETH_IDX_ACT_ERR_AUTH:
1959                 case QETH_IDX_ACT_ERR_AUTH_USER:
1960                         dev_err(&card->read.ccwdev->dev,
1961                                 "Setting the device online failed because of "
1962                                 "insufficient authorization\n");
1963                         break;
1964                 default:
1965                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1966                                 " negative reply\n",
1967                                 dev_name(&card->read.ccwdev->dev));
1968                 }
1969                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1970                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1971                 goto out;
1972         }
1973
1974         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1975         if (temp != qeth_peer_func_level(card->info.func_level)) {
1976                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1977                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1978                         dev_name(&card->read.ccwdev->dev),
1979                         card->info.func_level, temp);
1980                 goto out;
1981         }
1982         memcpy(&card->token.issuer_rm_r,
1983                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1984                QETH_MPC_TOKEN_LENGTH);
1985         memcpy(&card->info.mcl_level[0],
1986                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1987         channel->state = CH_STATE_UP;
1988 out:
1989         qeth_release_buffer(channel, iob);
1990 }
1991
1992 void qeth_prepare_control_data(struct qeth_card *card, int len,
1993                 struct qeth_cmd_buffer *iob)
1994 {
1995         qeth_setup_ccw(&card->write, iob->data, len);
1996         iob->callback = qeth_release_buffer;
1997
1998         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1999                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2000         card->seqno.trans_hdr++;
2001         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2002                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2003         card->seqno.pdu_hdr++;
2004         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2005                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2006         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2007 }
2008 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2009
2010 /**
2011  * qeth_send_control_data() -   send control command to the card
2012  * @card:                       qeth_card structure pointer
2013  * @len:                        size of the command buffer
2014  * @iob:                        qeth_cmd_buffer pointer
2015  * @reply_cb:                   callback function pointer
2016  * @cb_card:                    pointer to the qeth_card structure
2017  * @cb_reply:                   pointer to the qeth_reply structure
2018  * @cb_cmd:                     pointer to the original iob for non-IPA
2019  *                              commands, or to the qeth_ipa_cmd structure
2020  *                              for the IPA commands.
2021  * @reply_param:                private pointer passed to the callback
2022  *
2023  * Returns the value of the `return_code' field of the response
2024  * block returned from the hardware, or other error indication.
2025  * Value of zero indicates successful execution of the command.
2026  *
2027  * Callback function gets called one or more times, with cb_cmd
2028  * pointing to the response returned by the hardware. Callback
2029  * function must return non-zero if more reply blocks are expected,
2030  * and zero if the last or only reply block is received. Callback
2031  * function can get the value of the reply_param pointer from the
2032  * field 'param' of the structure qeth_reply.
2033  */
2034
2035 int qeth_send_control_data(struct qeth_card *card, int len,
2036                 struct qeth_cmd_buffer *iob,
2037                 int (*reply_cb)(struct qeth_card *cb_card,
2038                                 struct qeth_reply *cb_reply,
2039                                 unsigned long cb_cmd),
2040                 void *reply_param)
2041 {
2042         int rc;
2043         unsigned long flags;
2044         struct qeth_reply *reply = NULL;
2045         unsigned long timeout, event_timeout;
2046         struct qeth_ipa_cmd *cmd;
2047
2048         QETH_CARD_TEXT(card, 2, "sendctl");
2049
2050         if (card->read_or_write_problem) {
2051                 qeth_release_buffer(iob->channel, iob);
2052                 return -EIO;
2053         }
2054         reply = qeth_alloc_reply(card);
2055         if (!reply) {
2056                 return -ENOMEM;
2057         }
2058         reply->callback = reply_cb;
2059         reply->param = reply_param;
2060         if (card->state == CARD_STATE_DOWN)
2061                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2062         else
2063                 reply->seqno = card->seqno.ipa++;
2064         init_waitqueue_head(&reply->wait_q);
2065         spin_lock_irqsave(&card->lock, flags);
2066         list_add_tail(&reply->list, &card->cmd_waiter_list);
2067         spin_unlock_irqrestore(&card->lock, flags);
2068         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2069
2070         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2071         qeth_prepare_control_data(card, len, iob);
2072
2073         if (IS_IPA(iob->data))
2074                 event_timeout = QETH_IPA_TIMEOUT;
2075         else
2076                 event_timeout = QETH_TIMEOUT;
2077         timeout = jiffies + event_timeout;
2078
2079         QETH_CARD_TEXT(card, 6, "noirqpnd");
2080         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2081         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2082                               (addr_t) iob, 0, 0);
2083         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2084         if (rc) {
2085                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2086                         "ccw_device_start rc = %i\n",
2087                         dev_name(&card->write.ccwdev->dev), rc);
2088                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2089                 spin_lock_irqsave(&card->lock, flags);
2090                 list_del_init(&reply->list);
2091                 qeth_put_reply(reply);
2092                 spin_unlock_irqrestore(&card->lock, flags);
2093                 qeth_release_buffer(iob->channel, iob);
2094                 atomic_set(&card->write.irq_pending, 0);
2095                 wake_up(&card->wait_q);
2096                 return rc;
2097         }
2098
2099         /* we have only one long running ipassist, since we can ensure
2100            process context of this command we can sleep */
2101         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2102         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2103             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2104                 if (!wait_event_timeout(reply->wait_q,
2105                     atomic_read(&reply->received), event_timeout))
2106                         goto time_err;
2107         } else {
2108                 while (!atomic_read(&reply->received)) {
2109                         if (time_after(jiffies, timeout))
2110                                 goto time_err;
2111                         cpu_relax();
2112                 }
2113         }
2114
2115         if (reply->rc == -EIO)
2116                 goto error;
2117         rc = reply->rc;
2118         qeth_put_reply(reply);
2119         return rc;
2120
2121 time_err:
2122         reply->rc = -ETIME;
2123         spin_lock_irqsave(&reply->card->lock, flags);
2124         list_del_init(&reply->list);
2125         spin_unlock_irqrestore(&reply->card->lock, flags);
2126         atomic_inc(&reply->received);
2127 error:
2128         atomic_set(&card->write.irq_pending, 0);
2129         qeth_release_buffer(iob->channel, iob);
2130         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2131         rc = reply->rc;
2132         qeth_put_reply(reply);
2133         return rc;
2134 }
2135 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2136
2137 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2138                 unsigned long data)
2139 {
2140         struct qeth_cmd_buffer *iob;
2141
2142         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2143
2144         iob = (struct qeth_cmd_buffer *) data;
2145         memcpy(&card->token.cm_filter_r,
2146                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2147                QETH_MPC_TOKEN_LENGTH);
2148         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2149         return 0;
2150 }
2151
2152 static int qeth_cm_enable(struct qeth_card *card)
2153 {
2154         int rc;
2155         struct qeth_cmd_buffer *iob;
2156
2157         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2158
2159         iob = qeth_wait_for_buffer(&card->write);
2160         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2161         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2162                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2163         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2164                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2165
2166         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2167                                     qeth_cm_enable_cb, NULL);
2168         return rc;
2169 }
2170
2171 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2172                 unsigned long data)
2173 {
2174
2175         struct qeth_cmd_buffer *iob;
2176
2177         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2178
2179         iob = (struct qeth_cmd_buffer *) data;
2180         memcpy(&card->token.cm_connection_r,
2181                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2182                QETH_MPC_TOKEN_LENGTH);
2183         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2184         return 0;
2185 }
2186
2187 static int qeth_cm_setup(struct qeth_card *card)
2188 {
2189         int rc;
2190         struct qeth_cmd_buffer *iob;
2191
2192         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2193
2194         iob = qeth_wait_for_buffer(&card->write);
2195         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2196         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2197                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2198         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2199                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2200         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2201                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2202         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2203                                     qeth_cm_setup_cb, NULL);
2204         return rc;
2205
2206 }
2207
2208 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2209 {
2210         switch (card->info.type) {
2211         case QETH_CARD_TYPE_UNKNOWN:
2212                 return 1500;
2213         case QETH_CARD_TYPE_IQD:
2214                 return card->info.max_mtu;
2215         case QETH_CARD_TYPE_OSD:
2216                 switch (card->info.link_type) {
2217                 case QETH_LINK_TYPE_HSTR:
2218                 case QETH_LINK_TYPE_LANE_TR:
2219                         return 2000;
2220                 default:
2221                         return card->options.layer2 ? 1500 : 1492;
2222                 }
2223         case QETH_CARD_TYPE_OSM:
2224         case QETH_CARD_TYPE_OSX:
2225                 return card->options.layer2 ? 1500 : 1492;
2226         default:
2227                 return 1500;
2228         }
2229 }
2230
2231 static inline int qeth_get_mtu_outof_framesize(int framesize)
2232 {
2233         switch (framesize) {
2234         case 0x4000:
2235                 return 8192;
2236         case 0x6000:
2237                 return 16384;
2238         case 0xa000:
2239                 return 32768;
2240         case 0xffff:
2241                 return 57344;
2242         default:
2243                 return 0;
2244         }
2245 }
2246
2247 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2248 {
2249         switch (card->info.type) {
2250         case QETH_CARD_TYPE_OSD:
2251         case QETH_CARD_TYPE_OSM:
2252         case QETH_CARD_TYPE_OSX:
2253         case QETH_CARD_TYPE_IQD:
2254                 return ((mtu >= 576) &&
2255                         (mtu <= card->info.max_mtu));
2256         case QETH_CARD_TYPE_OSN:
2257         case QETH_CARD_TYPE_UNKNOWN:
2258         default:
2259                 return 1;
2260         }
2261 }
2262
2263 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2264                 unsigned long data)
2265 {
2266
2267         __u16 mtu, framesize;
2268         __u16 len;
2269         __u8 link_type;
2270         struct qeth_cmd_buffer *iob;
2271
2272         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2273
2274         iob = (struct qeth_cmd_buffer *) data;
2275         memcpy(&card->token.ulp_filter_r,
2276                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2277                QETH_MPC_TOKEN_LENGTH);
2278         if (card->info.type == QETH_CARD_TYPE_IQD) {
2279                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2280                 mtu = qeth_get_mtu_outof_framesize(framesize);
2281                 if (!mtu) {
2282                         iob->rc = -EINVAL;
2283                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2284                         return 0;
2285                 }
2286                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2287                         /* frame size has changed */
2288                         if (card->dev &&
2289                             ((card->dev->mtu == card->info.initial_mtu) ||
2290                              (card->dev->mtu > mtu)))
2291                                 card->dev->mtu = mtu;
2292                         qeth_free_qdio_buffers(card);
2293                 }
2294                 card->info.initial_mtu = mtu;
2295                 card->info.max_mtu = mtu;
2296                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2297         } else {
2298                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2299                         iob->data);
2300                 card->info.initial_mtu = min(card->info.max_mtu,
2301                                         qeth_get_initial_mtu_for_card(card));
2302                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2303         }
2304
2305         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2306         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2307                 memcpy(&link_type,
2308                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2309                 card->info.link_type = link_type;
2310         } else
2311                 card->info.link_type = 0;
2312         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2313         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2314         return 0;
2315 }
2316
2317 static int qeth_ulp_enable(struct qeth_card *card)
2318 {
2319         int rc;
2320         char prot_type;
2321         struct qeth_cmd_buffer *iob;
2322
2323         /*FIXME: trace view callbacks*/
2324         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2325
2326         iob = qeth_wait_for_buffer(&card->write);
2327         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2328
2329         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2330                 (__u8) card->info.portno;
2331         if (card->options.layer2)
2332                 if (card->info.type == QETH_CARD_TYPE_OSN)
2333                         prot_type = QETH_PROT_OSN2;
2334                 else
2335                         prot_type = QETH_PROT_LAYER2;
2336         else
2337                 prot_type = QETH_PROT_TCPIP;
2338
2339         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2340         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2341                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2342         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2343                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2344         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2345                                     qeth_ulp_enable_cb, NULL);
2346         return rc;
2347
2348 }
2349
2350 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2351                 unsigned long data)
2352 {
2353         struct qeth_cmd_buffer *iob;
2354
2355         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2356
2357         iob = (struct qeth_cmd_buffer *) data;
2358         memcpy(&card->token.ulp_connection_r,
2359                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2360                QETH_MPC_TOKEN_LENGTH);
2361         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2362                      3)) {
2363                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2364                 dev_err(&card->gdev->dev, "A connection could not be "
2365                         "established because of an OLM limit\n");
2366                 iob->rc = -EMLINK;
2367         }
2368         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2369         return 0;
2370 }
2371
2372 static int qeth_ulp_setup(struct qeth_card *card)
2373 {
2374         int rc;
2375         __u16 temp;
2376         struct qeth_cmd_buffer *iob;
2377         struct ccw_dev_id dev_id;
2378
2379         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2380
2381         iob = qeth_wait_for_buffer(&card->write);
2382         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2383
2384         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2385                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2386         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2387                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2388         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2389                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2390
2391         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2392         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2393         temp = (card->info.cula << 8) + card->info.unit_addr2;
2394         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2395         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2396                                     qeth_ulp_setup_cb, NULL);
2397         return rc;
2398 }
2399
2400 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2401 {
2402         int rc;
2403         struct qeth_qdio_out_buffer *newbuf;
2404
2405         rc = 0;
2406         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2407         if (!newbuf) {
2408                 rc = -ENOMEM;
2409                 goto out;
2410         }
2411         newbuf->buffer = q->qdio_bufs[bidx];
2412         skb_queue_head_init(&newbuf->skb_list);
2413         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2414         newbuf->q = q;
2415         newbuf->aob = NULL;
2416         newbuf->next_pending = q->bufs[bidx];
2417         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2418         q->bufs[bidx] = newbuf;
2419         if (q->bufstates) {
2420                 q->bufstates[bidx].user = newbuf;
2421                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2422                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2423                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2424                                 (long) newbuf->next_pending);
2425         }
2426 out:
2427         return rc;
2428 }
2429
2430 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2431 {
2432         if (!q)
2433                 return;
2434
2435         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2436         kfree(q);
2437 }
2438
2439 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2440 {
2441         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2442
2443         if (!q)
2444                 return NULL;
2445
2446         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2447                 kfree(q);
2448                 return NULL;
2449         }
2450         return q;
2451 }
2452
2453 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2454 {
2455         int i, j;
2456
2457         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2458
2459         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2460                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2461                 return 0;
2462
2463         QETH_DBF_TEXT(SETUP, 2, "inq");
2464         card->qdio.in_q = qeth_alloc_qdio_queue();
2465         if (!card->qdio.in_q)
2466                 goto out_nomem;
2467
2468         /* inbound buffer pool */
2469         if (qeth_alloc_buffer_pool(card))
2470                 goto out_freeinq;
2471
2472         /* outbound */
2473         card->qdio.out_qs =
2474                 kzalloc(card->qdio.no_out_queues *
2475                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2476         if (!card->qdio.out_qs)
2477                 goto out_freepool;
2478         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2479                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2480                 if (!card->qdio.out_qs[i])
2481                         goto out_freeoutq;
2482                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2483                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2484                 card->qdio.out_qs[i]->queue_no = i;
2485                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2486                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2487                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2488                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2489                                 goto out_freeoutqbufs;
2490                 }
2491         }
2492
2493         /* completion */
2494         if (qeth_alloc_cq(card))
2495                 goto out_freeoutq;
2496
2497         return 0;
2498
2499 out_freeoutqbufs:
2500         while (j > 0) {
2501                 --j;
2502                 kmem_cache_free(qeth_qdio_outbuf_cache,
2503                                 card->qdio.out_qs[i]->bufs[j]);
2504                 card->qdio.out_qs[i]->bufs[j] = NULL;
2505         }
2506 out_freeoutq:
2507         while (i > 0) {
2508                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2509                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2510         }
2511         kfree(card->qdio.out_qs);
2512         card->qdio.out_qs = NULL;
2513 out_freepool:
2514         qeth_free_buffer_pool(card);
2515 out_freeinq:
2516         qeth_free_qdio_queue(card->qdio.in_q);
2517         card->qdio.in_q = NULL;
2518 out_nomem:
2519         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2520         return -ENOMEM;
2521 }
2522
2523 static void qeth_free_qdio_buffers(struct qeth_card *card)
2524 {
2525         int i, j;
2526
2527         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2528                 QETH_QDIO_UNINITIALIZED)
2529                 return;
2530
2531         qeth_free_cq(card);
2532         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2533         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2534                 if (card->qdio.in_q->bufs[j].rx_skb)
2535                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2536         }
2537         qeth_free_qdio_queue(card->qdio.in_q);
2538         card->qdio.in_q = NULL;
2539         /* inbound buffer pool */
2540         qeth_free_buffer_pool(card);
2541         /* free outbound qdio_qs */
2542         if (card->qdio.out_qs) {
2543                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2544                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2545                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2546                 }
2547                 kfree(card->qdio.out_qs);
2548                 card->qdio.out_qs = NULL;
2549         }
2550 }
2551
2552 static void qeth_create_qib_param_field(struct qeth_card *card,
2553                 char *param_field)
2554 {
2555
2556         param_field[0] = _ascebc['P'];
2557         param_field[1] = _ascebc['C'];
2558         param_field[2] = _ascebc['I'];
2559         param_field[3] = _ascebc['T'];
2560         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2561         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2562         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2563 }
2564
2565 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2566                 char *param_field)
2567 {
2568         param_field[16] = _ascebc['B'];
2569         param_field[17] = _ascebc['L'];
2570         param_field[18] = _ascebc['K'];
2571         param_field[19] = _ascebc['T'];
2572         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2573         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2574         *((unsigned int *) (&param_field[28])) =
2575                 card->info.blkt.inter_packet_jumbo;
2576 }
2577
2578 static int qeth_qdio_activate(struct qeth_card *card)
2579 {
2580         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2581         return qdio_activate(CARD_DDEV(card));
2582 }
2583
2584 static int qeth_dm_act(struct qeth_card *card)
2585 {
2586         int rc;
2587         struct qeth_cmd_buffer *iob;
2588
2589         QETH_DBF_TEXT(SETUP, 2, "dmact");
2590
2591         iob = qeth_wait_for_buffer(&card->write);
2592         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2593
2594         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2595                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2596         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2597                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2598         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2599         return rc;
2600 }
2601
2602 static int qeth_mpc_initialize(struct qeth_card *card)
2603 {
2604         int rc;
2605
2606         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2607
2608         rc = qeth_issue_next_read(card);
2609         if (rc) {
2610                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2611                 return rc;
2612         }
2613         rc = qeth_cm_enable(card);
2614         if (rc) {
2615                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2616                 goto out_qdio;
2617         }
2618         rc = qeth_cm_setup(card);
2619         if (rc) {
2620                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2621                 goto out_qdio;
2622         }
2623         rc = qeth_ulp_enable(card);
2624         if (rc) {
2625                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2626                 goto out_qdio;
2627         }
2628         rc = qeth_ulp_setup(card);
2629         if (rc) {
2630                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2631                 goto out_qdio;
2632         }
2633         rc = qeth_alloc_qdio_buffers(card);
2634         if (rc) {
2635                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2636                 goto out_qdio;
2637         }
2638         rc = qeth_qdio_establish(card);
2639         if (rc) {
2640                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2641                 qeth_free_qdio_buffers(card);
2642                 goto out_qdio;
2643         }
2644         rc = qeth_qdio_activate(card);
2645         if (rc) {
2646                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2647                 goto out_qdio;
2648         }
2649         rc = qeth_dm_act(card);
2650         if (rc) {
2651                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2652                 goto out_qdio;
2653         }
2654
2655         return 0;
2656 out_qdio:
2657         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2658         qdio_free(CARD_DDEV(card));
2659         return rc;
2660 }
2661
2662 void qeth_print_status_message(struct qeth_card *card)
2663 {
2664         switch (card->info.type) {
2665         case QETH_CARD_TYPE_OSD:
2666         case QETH_CARD_TYPE_OSM:
2667         case QETH_CARD_TYPE_OSX:
2668                 /* VM will use a non-zero first character
2669                  * to indicate a HiperSockets like reporting
2670                  * of the level OSA sets the first character to zero
2671                  * */
2672                 if (!card->info.mcl_level[0]) {
2673                         sprintf(card->info.mcl_level, "%02x%02x",
2674                                 card->info.mcl_level[2],
2675                                 card->info.mcl_level[3]);
2676                         break;
2677                 }
2678                 /* fallthrough */
2679         case QETH_CARD_TYPE_IQD:
2680                 if ((card->info.guestlan) ||
2681                     (card->info.mcl_level[0] & 0x80)) {
2682                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2683                                 card->info.mcl_level[0]];
2684                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2685                                 card->info.mcl_level[1]];
2686                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2687                                 card->info.mcl_level[2]];
2688                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2689                                 card->info.mcl_level[3]];
2690                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2691                 }
2692                 break;
2693         default:
2694                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2695         }
2696         dev_info(&card->gdev->dev,
2697                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2698                  qeth_get_cardname(card),
2699                  (card->info.mcl_level[0]) ? " (level: " : "",
2700                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2701                  (card->info.mcl_level[0]) ? ")" : "",
2702                  qeth_get_cardname_short(card));
2703 }
2704 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2705
2706 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2707 {
2708         struct qeth_buffer_pool_entry *entry;
2709
2710         QETH_CARD_TEXT(card, 5, "inwrklst");
2711
2712         list_for_each_entry(entry,
2713                             &card->qdio.init_pool.entry_list, init_list) {
2714                 qeth_put_buffer_pool_entry(card, entry);
2715         }
2716 }
2717
2718 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2719                 struct qeth_card *card)
2720 {
2721         struct list_head *plh;
2722         struct qeth_buffer_pool_entry *entry;
2723         int i, free;
2724         struct page *page;
2725
2726         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2727                 return NULL;
2728
2729         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2730                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2731                 free = 1;
2732                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2733                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2734                                 free = 0;
2735                                 break;
2736                         }
2737                 }
2738                 if (free) {
2739                         list_del_init(&entry->list);
2740                         return entry;
2741                 }
2742         }
2743
2744         /* no free buffer in pool so take first one and swap pages */
2745         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2746                         struct qeth_buffer_pool_entry, list);
2747         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2748                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2749                         page = alloc_page(GFP_ATOMIC);
2750                         if (!page) {
2751                                 return NULL;
2752                         } else {
2753                                 free_page((unsigned long)entry->elements[i]);
2754                                 entry->elements[i] = page_address(page);
2755                                 if (card->options.performance_stats)
2756                                         card->perf_stats.sg_alloc_page_rx++;
2757                         }
2758                 }
2759         }
2760         list_del_init(&entry->list);
2761         return entry;
2762 }
2763
2764 static int qeth_init_input_buffer(struct qeth_card *card,
2765                 struct qeth_qdio_buffer *buf)
2766 {
2767         struct qeth_buffer_pool_entry *pool_entry;
2768         int i;
2769
2770         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2771                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2772                 if (!buf->rx_skb)
2773                         return 1;
2774         }
2775
2776         pool_entry = qeth_find_free_buffer_pool_entry(card);
2777         if (!pool_entry)
2778                 return 1;
2779
2780         /*
2781          * since the buffer is accessed only from the input_tasklet
2782          * there shouldn't be a need to synchronize; also, since we use
2783          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2784          * buffers
2785          */
2786
2787         buf->pool_entry = pool_entry;
2788         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2789                 buf->buffer->element[i].length = PAGE_SIZE;
2790                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2791                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2792                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2793                 else
2794                         buf->buffer->element[i].eflags = 0;
2795                 buf->buffer->element[i].sflags = 0;
2796         }
2797         return 0;
2798 }
2799
2800 int qeth_init_qdio_queues(struct qeth_card *card)
2801 {
2802         int i, j;
2803         int rc;
2804
2805         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2806
2807         /* inbound queue */
2808         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2809                            QDIO_MAX_BUFFERS_PER_Q);
2810         qeth_initialize_working_pool_list(card);
2811         /*give only as many buffers to hardware as we have buffer pool entries*/
2812         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2813                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2814         card->qdio.in_q->next_buf_to_init =
2815                 card->qdio.in_buf_pool.buf_count - 1;
2816         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2817                      card->qdio.in_buf_pool.buf_count - 1);
2818         if (rc) {
2819                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2820                 return rc;
2821         }
2822
2823         /* completion */
2824         rc = qeth_cq_init(card);
2825         if (rc) {
2826                 return rc;
2827         }
2828
2829         /* outbound queue */
2830         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2831                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2832                                    QDIO_MAX_BUFFERS_PER_Q);
2833                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2834                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2835                                         card->qdio.out_qs[i]->bufs[j],
2836                                         QETH_QDIO_BUF_EMPTY);
2837                 }
2838                 card->qdio.out_qs[i]->card = card;
2839                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2840                 card->qdio.out_qs[i]->do_pack = 0;
2841                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2842                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2843                 atomic_set(&card->qdio.out_qs[i]->state,
2844                            QETH_OUT_Q_UNLOCKED);
2845         }
2846         return 0;
2847 }
2848 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2849
2850 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2851 {
2852         switch (link_type) {
2853         case QETH_LINK_TYPE_HSTR:
2854                 return 2;
2855         default:
2856                 return 1;
2857         }
2858 }
2859
2860 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2861                 struct qeth_ipa_cmd *cmd, __u8 command,
2862                 enum qeth_prot_versions prot)
2863 {
2864         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2865         cmd->hdr.command = command;
2866         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2867         cmd->hdr.seqno = card->seqno.ipa;
2868         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2869         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2870         if (card->options.layer2)
2871                 cmd->hdr.prim_version_no = 2;
2872         else
2873                 cmd->hdr.prim_version_no = 1;
2874         cmd->hdr.param_count = 1;
2875         cmd->hdr.prot_version = prot;
2876         cmd->hdr.ipa_supported = 0;
2877         cmd->hdr.ipa_enabled = 0;
2878 }
2879
2880 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2881                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2882 {
2883         struct qeth_cmd_buffer *iob;
2884         struct qeth_ipa_cmd *cmd;
2885
2886         iob = qeth_get_buffer(&card->write);
2887         if (iob) {
2888                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2889                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2890         } else {
2891                 dev_warn(&card->gdev->dev,
2892                          "The qeth driver ran out of channel command buffers\n");
2893                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2894                                  dev_name(&card->gdev->dev));
2895         }
2896
2897         return iob;
2898 }
2899 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2900
2901 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2902                 char prot_type)
2903 {
2904         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2905         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2906         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2907                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2908 }
2909 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2910
2911 /**
2912  * qeth_send_ipa_cmd() - send an IPA command
2913  *
2914  * See qeth_send_control_data() for explanation of the arguments.
2915  */
2916
2917 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2918                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2919                         unsigned long),
2920                 void *reply_param)
2921 {
2922         int rc;
2923         char prot_type;
2924
2925         QETH_CARD_TEXT(card, 4, "sendipa");
2926
2927         if (card->options.layer2)
2928                 if (card->info.type == QETH_CARD_TYPE_OSN)
2929                         prot_type = QETH_PROT_OSN2;
2930                 else
2931                         prot_type = QETH_PROT_LAYER2;
2932         else
2933                 prot_type = QETH_PROT_TCPIP;
2934         qeth_prepare_ipa_cmd(card, iob, prot_type);
2935         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2936                                                 iob, reply_cb, reply_param);
2937         if (rc == -ETIME) {
2938                 qeth_clear_ipacmd_list(card);
2939                 qeth_schedule_recovery(card);
2940         }
2941         return rc;
2942 }
2943 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2944
2945 static int qeth_send_startlan(struct qeth_card *card)
2946 {
2947         int rc;
2948         struct qeth_cmd_buffer *iob;
2949
2950         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2951
2952         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2953         if (!iob)
2954                 return -ENOMEM;
2955         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2956         return rc;
2957 }
2958
2959 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2960                 struct qeth_reply *reply, unsigned long data)
2961 {
2962         struct qeth_ipa_cmd *cmd;
2963
2964         QETH_CARD_TEXT(card, 4, "defadpcb");
2965
2966         cmd = (struct qeth_ipa_cmd *) data;
2967         if (cmd->hdr.return_code == 0)
2968                 cmd->hdr.return_code =
2969                         cmd->data.setadapterparms.hdr.return_code;
2970         return 0;
2971 }
2972
2973 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2974                 struct qeth_reply *reply, unsigned long data)
2975 {
2976         struct qeth_ipa_cmd *cmd;
2977
2978         QETH_CARD_TEXT(card, 3, "quyadpcb");
2979
2980         cmd = (struct qeth_ipa_cmd *) data;
2981         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2982                 card->info.link_type =
2983                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2984                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2985         }
2986         card->options.adp.supported_funcs =
2987                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2988         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2989 }
2990
2991 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2992                 __u32 command, __u32 cmdlen)
2993 {
2994         struct qeth_cmd_buffer *iob;
2995         struct qeth_ipa_cmd *cmd;
2996
2997         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2998                                      QETH_PROT_IPV4);
2999         if (iob) {
3000                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3001                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3002                 cmd->data.setadapterparms.hdr.command_code = command;
3003                 cmd->data.setadapterparms.hdr.used_total = 1;
3004                 cmd->data.setadapterparms.hdr.seq_no = 1;
3005         }
3006
3007         return iob;
3008 }
3009
3010 int qeth_query_setadapterparms(struct qeth_card *card)
3011 {
3012         int rc;
3013         struct qeth_cmd_buffer *iob;
3014
3015         QETH_CARD_TEXT(card, 3, "queryadp");
3016         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3017                                    sizeof(struct qeth_ipacmd_setadpparms));
3018         if (!iob)
3019                 return -ENOMEM;
3020         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3021         return rc;
3022 }
3023 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3024
3025 static int qeth_query_ipassists_cb(struct qeth_card *card,
3026                 struct qeth_reply *reply, unsigned long data)
3027 {
3028         struct qeth_ipa_cmd *cmd;
3029
3030         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3031
3032         cmd = (struct qeth_ipa_cmd *) data;
3033
3034         switch (cmd->hdr.return_code) {
3035         case IPA_RC_NOTSUPP:
3036         case IPA_RC_L2_UNSUPPORTED_CMD:
3037                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3038                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3039                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3040                 return -0;
3041         default:
3042                 if (cmd->hdr.return_code) {
3043                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3044                                                 "rc=%d\n",
3045                                                 dev_name(&card->gdev->dev),
3046                                                 cmd->hdr.return_code);
3047                         return 0;
3048                 }
3049         }
3050
3051         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3052                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3053                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3054         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3055                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3056                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3057         } else
3058                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3059                                         "\n", dev_name(&card->gdev->dev));
3060         return 0;
3061 }
3062
3063 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3064 {
3065         int rc;
3066         struct qeth_cmd_buffer *iob;
3067
3068         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3069         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3070         if (!iob)
3071                 return -ENOMEM;
3072         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3073         return rc;
3074 }
3075 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3076
3077 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3078                                 struct qeth_reply *reply, unsigned long data)
3079 {
3080         struct qeth_ipa_cmd *cmd;
3081         struct qeth_switch_info *sw_info;
3082         struct qeth_query_switch_attributes *attrs;
3083
3084         QETH_CARD_TEXT(card, 2, "qswiatcb");
3085         cmd = (struct qeth_ipa_cmd *) data;
3086         sw_info = (struct qeth_switch_info *)reply->param;
3087         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3088                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3089                 sw_info->capabilities = attrs->capabilities;
3090                 sw_info->settings = attrs->settings;
3091                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3092                                                         sw_info->settings);
3093         }
3094         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3095
3096         return 0;
3097 }
3098
3099 int qeth_query_switch_attributes(struct qeth_card *card,
3100                                  struct qeth_switch_info *sw_info)
3101 {
3102         struct qeth_cmd_buffer *iob;
3103
3104         QETH_CARD_TEXT(card, 2, "qswiattr");
3105         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3106                 return -EOPNOTSUPP;
3107         if (!netif_carrier_ok(card->dev))
3108                 return -ENOMEDIUM;
3109         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3110                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3111         if (!iob)
3112                 return -ENOMEM;
3113         return qeth_send_ipa_cmd(card, iob,
3114                                 qeth_query_switch_attributes_cb, sw_info);
3115 }
3116 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3117
3118 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3119                 struct qeth_reply *reply, unsigned long data)
3120 {
3121         struct qeth_ipa_cmd *cmd;
3122         __u16 rc;
3123
3124         cmd = (struct qeth_ipa_cmd *)data;
3125         rc = cmd->hdr.return_code;
3126         if (rc)
3127                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3128         else
3129                 card->info.diagass_support = cmd->data.diagass.ext;
3130         return 0;
3131 }
3132
3133 static int qeth_query_setdiagass(struct qeth_card *card)
3134 {
3135         struct qeth_cmd_buffer *iob;
3136         struct qeth_ipa_cmd    *cmd;
3137
3138         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3139         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3140         if (!iob)
3141                 return -ENOMEM;
3142         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3143         cmd->data.diagass.subcmd_len = 16;
3144         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3145         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3146 }
3147
3148 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3149 {
3150         unsigned long info = get_zeroed_page(GFP_KERNEL);
3151         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3152         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3153         struct ccw_dev_id ccwid;
3154         int level;
3155
3156         tid->chpid = card->info.chpid;
3157         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3158         tid->ssid = ccwid.ssid;
3159         tid->devno = ccwid.devno;
3160         if (!info)
3161                 return;
3162         level = stsi(NULL, 0, 0, 0);
3163         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3164                 tid->lparnr = info222->lpar_number;
3165         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3166                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3167                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3168         }
3169         free_page(info);
3170         return;
3171 }
3172
3173 static int qeth_hw_trap_cb(struct qeth_card *card,
3174                 struct qeth_reply *reply, unsigned long data)
3175 {
3176         struct qeth_ipa_cmd *cmd;
3177         __u16 rc;
3178
3179         cmd = (struct qeth_ipa_cmd *)data;
3180         rc = cmd->hdr.return_code;
3181         if (rc)
3182                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3183         return 0;
3184 }
3185
3186 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3187 {
3188         struct qeth_cmd_buffer *iob;
3189         struct qeth_ipa_cmd *cmd;
3190
3191         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3192         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3193         if (!iob)
3194                 return -ENOMEM;
3195         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3196         cmd->data.diagass.subcmd_len = 80;
3197         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3198         cmd->data.diagass.type = 1;
3199         cmd->data.diagass.action = action;
3200         switch (action) {
3201         case QETH_DIAGS_TRAP_ARM:
3202                 cmd->data.diagass.options = 0x0003;
3203                 cmd->data.diagass.ext = 0x00010000 +
3204                         sizeof(struct qeth_trap_id);
3205                 qeth_get_trap_id(card,
3206                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3207                 break;
3208         case QETH_DIAGS_TRAP_DISARM:
3209                 cmd->data.diagass.options = 0x0001;
3210                 break;
3211         case QETH_DIAGS_TRAP_CAPTURE:
3212                 break;
3213         }
3214         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3215 }
3216 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3217
3218 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3219                 unsigned int qdio_error, const char *dbftext)
3220 {
3221         if (qdio_error) {
3222                 QETH_CARD_TEXT(card, 2, dbftext);
3223                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3224                                buf->element[15].sflags);
3225                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3226                                buf->element[14].sflags);
3227                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3228                 if ((buf->element[15].sflags) == 0x12) {
3229                         card->stats.rx_dropped++;
3230                         return 0;
3231                 } else
3232                         return 1;
3233         }
3234         return 0;
3235 }
3236 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3237
3238 static void qeth_buffer_reclaim_work(struct work_struct *work)
3239 {
3240         struct qeth_card *card = container_of(work, struct qeth_card,
3241                 buffer_reclaim_work.work);
3242
3243         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3244         qeth_queue_input_buffer(card, card->reclaim_index);
3245 }
3246
3247 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3248 {
3249         struct qeth_qdio_q *queue = card->qdio.in_q;
3250         struct list_head *lh;
3251         int count;
3252         int i;
3253         int rc;
3254         int newcount = 0;
3255
3256         count = (index < queue->next_buf_to_init)?
3257                 card->qdio.in_buf_pool.buf_count -
3258                 (queue->next_buf_to_init - index) :
3259                 card->qdio.in_buf_pool.buf_count -
3260                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3261         /* only requeue at a certain threshold to avoid SIGAs */
3262         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3263                 for (i = queue->next_buf_to_init;
3264                      i < queue->next_buf_to_init + count; ++i) {
3265                         if (qeth_init_input_buffer(card,
3266                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3267                                 break;
3268                         } else {
3269                                 newcount++;
3270                         }
3271                 }
3272
3273                 if (newcount < count) {
3274                         /* we are in memory shortage so we switch back to
3275                            traditional skb allocation and drop packages */
3276                         atomic_set(&card->force_alloc_skb, 3);
3277                         count = newcount;
3278                 } else {
3279                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3280                 }
3281
3282                 if (!count) {
3283                         i = 0;
3284                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3285                                 i++;
3286                         if (i == card->qdio.in_buf_pool.buf_count) {
3287                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3288                                 card->reclaim_index = index;
3289                                 schedule_delayed_work(
3290                                         &card->buffer_reclaim_work,
3291                                         QETH_RECLAIM_WORK_TIME);
3292                         }
3293                         return;
3294                 }
3295
3296                 /*
3297                  * according to old code it should be avoided to requeue all
3298                  * 128 buffers in order to benefit from PCI avoidance.
3299                  * this function keeps at least one buffer (the buffer at
3300                  * 'index') un-requeued -> this buffer is the first buffer that
3301                  * will be requeued the next time
3302                  */
3303                 if (card->options.performance_stats) {
3304                         card->perf_stats.inbound_do_qdio_cnt++;
3305                         card->perf_stats.inbound_do_qdio_start_time =
3306                                 qeth_get_micros();
3307                 }
3308                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3309                              queue->next_buf_to_init, count);
3310                 if (card->options.performance_stats)
3311                         card->perf_stats.inbound_do_qdio_time +=
3312                                 qeth_get_micros() -
3313                                 card->perf_stats.inbound_do_qdio_start_time;
3314                 if (rc) {
3315                         QETH_CARD_TEXT(card, 2, "qinberr");
3316                 }
3317                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3318                                           QDIO_MAX_BUFFERS_PER_Q;
3319         }
3320 }
3321 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3322
3323 static void qeth_handle_send_error(struct qeth_card *card,
3324                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3325 {
3326         int sbalf15 = buffer->buffer->element[15].sflags;
3327
3328         QETH_CARD_TEXT(card, 6, "hdsnderr");
3329         if (card->info.type == QETH_CARD_TYPE_IQD) {
3330                 if (sbalf15 == 0) {
3331                         qdio_err = 0;
3332                 } else {
3333                         qdio_err = 1;
3334                 }
3335         }
3336         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3337
3338         if (!qdio_err)
3339                 return;
3340
3341         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3342                 return;
3343
3344         QETH_CARD_TEXT(card, 1, "lnkfail");
3345         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3346                        (u16)qdio_err, (u8)sbalf15);
3347 }
3348
3349 /*
3350  * Switched to packing state if the number of used buffers on a queue
3351  * reaches a certain limit.
3352  */
3353 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3354 {
3355         if (!queue->do_pack) {
3356                 if (atomic_read(&queue->used_buffers)
3357                     >= QETH_HIGH_WATERMARK_PACK){
3358                         /* switch non-PACKING -> PACKING */
3359                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3360                         if (queue->card->options.performance_stats)
3361                                 queue->card->perf_stats.sc_dp_p++;
3362                         queue->do_pack = 1;
3363                 }
3364         }
3365 }
3366
3367 /*
3368  * Switches from packing to non-packing mode. If there is a packing
3369  * buffer on the queue this buffer will be prepared to be flushed.
3370  * In that case 1 is returned to inform the caller. If no buffer
3371  * has to be flushed, zero is returned.
3372  */
3373 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3374 {
3375         struct qeth_qdio_out_buffer *buffer;
3376         int flush_count = 0;
3377
3378         if (queue->do_pack) {
3379                 if (atomic_read(&queue->used_buffers)
3380                     <= QETH_LOW_WATERMARK_PACK) {
3381                         /* switch PACKING -> non-PACKING */
3382                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3383                         if (queue->card->options.performance_stats)
3384                                 queue->card->perf_stats.sc_p_dp++;
3385                         queue->do_pack = 0;
3386                         /* flush packing buffers */
3387                         buffer = queue->bufs[queue->next_buf_to_fill];
3388                         if ((atomic_read(&buffer->state) ==
3389                                                 QETH_QDIO_BUF_EMPTY) &&
3390                             (buffer->next_element_to_fill > 0)) {
3391                                 atomic_set(&buffer->state,
3392                                            QETH_QDIO_BUF_PRIMED);
3393                                 flush_count++;
3394                                 queue->next_buf_to_fill =
3395                                         (queue->next_buf_to_fill + 1) %
3396                                         QDIO_MAX_BUFFERS_PER_Q;
3397                         }
3398                 }
3399         }
3400         return flush_count;
3401 }
3402
3403
3404 /*
3405  * Called to flush a packing buffer if no more pci flags are on the queue.
3406  * Checks if there is a packing buffer and prepares it to be flushed.
3407  * In that case returns 1, otherwise zero.
3408  */
3409 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3410 {
3411         struct qeth_qdio_out_buffer *buffer;
3412
3413         buffer = queue->bufs[queue->next_buf_to_fill];
3414         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3415            (buffer->next_element_to_fill > 0)) {
3416                 /* it's a packing buffer */
3417                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3418                 queue->next_buf_to_fill =
3419                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3420                 return 1;
3421         }
3422         return 0;
3423 }
3424
3425 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3426                                int count)
3427 {
3428         struct qeth_qdio_out_buffer *buf;
3429         int rc;
3430         int i;
3431         unsigned int qdio_flags;
3432
3433         for (i = index; i < index + count; ++i) {
3434                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3435                 buf = queue->bufs[bidx];
3436                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3437                                 SBAL_EFLAGS_LAST_ENTRY;
3438
3439                 if (queue->bufstates)
3440                         queue->bufstates[bidx].user = buf;
3441
3442                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3443                         continue;
3444
3445                 if (!queue->do_pack) {
3446                         if ((atomic_read(&queue->used_buffers) >=
3447                                 (QETH_HIGH_WATERMARK_PACK -
3448                                  QETH_WATERMARK_PACK_FUZZ)) &&
3449                             !atomic_read(&queue->set_pci_flags_count)) {
3450                                 /* it's likely that we'll go to packing
3451                                  * mode soon */
3452                                 atomic_inc(&queue->set_pci_flags_count);
3453                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3454                         }
3455                 } else {
3456                         if (!atomic_read(&queue->set_pci_flags_count)) {
3457                                 /*
3458                                  * there's no outstanding PCI any more, so we
3459                                  * have to request a PCI to be sure the the PCI
3460                                  * will wake at some time in the future then we
3461                                  * can flush packed buffers that might still be
3462                                  * hanging around, which can happen if no
3463                                  * further send was requested by the stack
3464                                  */
3465                                 atomic_inc(&queue->set_pci_flags_count);
3466                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3467                         }
3468                 }
3469         }
3470
3471         netif_trans_update(queue->card->dev);
3472         if (queue->card->options.performance_stats) {
3473                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3474                 queue->card->perf_stats.outbound_do_qdio_start_time =
3475                         qeth_get_micros();
3476         }
3477         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3478         if (atomic_read(&queue->set_pci_flags_count))
3479                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3480         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3481                      queue->queue_no, index, count);
3482         if (queue->card->options.performance_stats)
3483                 queue->card->perf_stats.outbound_do_qdio_time +=
3484                         qeth_get_micros() -
3485                         queue->card->perf_stats.outbound_do_qdio_start_time;
3486         atomic_add(count, &queue->used_buffers);
3487         if (rc) {
3488                 queue->card->stats.tx_errors += count;
3489                 /* ignore temporary SIGA errors without busy condition */
3490                 if (rc == -ENOBUFS)
3491                         return;
3492                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3493                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3494                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3495                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3496                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3497
3498                 /* this must not happen under normal circumstances. if it
3499                  * happens something is really wrong -> recover */
3500                 qeth_schedule_recovery(queue->card);
3501                 return;
3502         }
3503         if (queue->card->options.performance_stats)
3504                 queue->card->perf_stats.bufs_sent += count;
3505 }
3506
3507 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3508 {
3509         int index;
3510         int flush_cnt = 0;
3511         int q_was_packing = 0;
3512
3513         /*
3514          * check if weed have to switch to non-packing mode or if
3515          * we have to get a pci flag out on the queue
3516          */
3517         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3518             !atomic_read(&queue->set_pci_flags_count)) {
3519                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3520                                 QETH_OUT_Q_UNLOCKED) {
3521                         /*
3522                          * If we get in here, there was no action in
3523                          * do_send_packet. So, we check if there is a
3524                          * packing buffer to be flushed here.
3525                          */
3526                         netif_stop_queue(queue->card->dev);
3527                         index = queue->next_buf_to_fill;
3528                         q_was_packing = queue->do_pack;
3529                         /* queue->do_pack may change */
3530                         barrier();
3531                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3532                         if (!flush_cnt &&
3533                             !atomic_read(&queue->set_pci_flags_count))
3534                                 flush_cnt +=
3535                                         qeth_flush_buffers_on_no_pci(queue);
3536                         if (queue->card->options.performance_stats &&
3537                             q_was_packing)
3538                                 queue->card->perf_stats.bufs_sent_pack +=
3539                                         flush_cnt;
3540                         if (flush_cnt)
3541                                 qeth_flush_buffers(queue, index, flush_cnt);
3542                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3543                 }
3544         }
3545 }
3546
3547 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3548                 unsigned long card_ptr)
3549 {
3550         struct qeth_card *card = (struct qeth_card *)card_ptr;
3551
3552         if (card->dev && (card->dev->flags & IFF_UP))
3553                 napi_schedule(&card->napi);
3554 }
3555 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3556
3557 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3558 {
3559         int rc;
3560
3561         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3562                 rc = -1;
3563                 goto out;
3564         } else {
3565                 if (card->options.cq == cq) {
3566                         rc = 0;
3567                         goto out;
3568                 }
3569
3570                 if (card->state != CARD_STATE_DOWN &&
3571                     card->state != CARD_STATE_RECOVER) {
3572                         rc = -1;
3573                         goto out;
3574                 }
3575
3576                 qeth_free_qdio_buffers(card);
3577                 card->options.cq = cq;
3578                 rc = 0;
3579         }
3580 out:
3581         return rc;
3582
3583 }
3584 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3585
3586
3587 static void qeth_qdio_cq_handler(struct qeth_card *card,
3588                 unsigned int qdio_err,
3589                 unsigned int queue, int first_element, int count) {
3590         struct qeth_qdio_q *cq = card->qdio.c_q;
3591         int i;
3592         int rc;
3593
3594         if (!qeth_is_cq(card, queue))
3595                 goto out;
3596
3597         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3598         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3599         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3600
3601         if (qdio_err) {
3602                 netif_stop_queue(card->dev);
3603                 qeth_schedule_recovery(card);
3604                 goto out;
3605         }
3606
3607         if (card->options.performance_stats) {
3608                 card->perf_stats.cq_cnt++;
3609                 card->perf_stats.cq_start_time = qeth_get_micros();
3610         }
3611
3612         for (i = first_element; i < first_element + count; ++i) {
3613                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3614                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3615                 int e;
3616
3617                 e = 0;
3618                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3619                        buffer->element[e].addr) {
3620                         unsigned long phys_aob_addr;
3621
3622                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3623                         qeth_qdio_handle_aob(card, phys_aob_addr);
3624                         buffer->element[e].addr = NULL;
3625                         buffer->element[e].eflags = 0;
3626                         buffer->element[e].sflags = 0;
3627                         buffer->element[e].length = 0;
3628
3629                         ++e;
3630                 }
3631
3632                 buffer->element[15].eflags = 0;
3633                 buffer->element[15].sflags = 0;
3634         }
3635         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3636                     card->qdio.c_q->next_buf_to_init,
3637                     count);
3638         if (rc) {
3639                 dev_warn(&card->gdev->dev,
3640                         "QDIO reported an error, rc=%i\n", rc);
3641                 QETH_CARD_TEXT(card, 2, "qcqherr");
3642         }
3643         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3644                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3645
3646         netif_wake_queue(card->dev);
3647
3648         if (card->options.performance_stats) {
3649                 int delta_t = qeth_get_micros();
3650                 delta_t -= card->perf_stats.cq_start_time;
3651                 card->perf_stats.cq_time += delta_t;
3652         }
3653 out:
3654         return;
3655 }
3656
3657 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3658                 unsigned int queue, int first_elem, int count,
3659                 unsigned long card_ptr)
3660 {
3661         struct qeth_card *card = (struct qeth_card *)card_ptr;
3662
3663         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3664         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3665
3666         if (qeth_is_cq(card, queue))
3667                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3668         else if (qdio_err)
3669                 qeth_schedule_recovery(card);
3670
3671
3672 }
3673 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3674
3675 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3676                 unsigned int qdio_error, int __queue, int first_element,
3677                 int count, unsigned long card_ptr)
3678 {
3679         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3680         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3681         struct qeth_qdio_out_buffer *buffer;
3682         int i;
3683
3684         QETH_CARD_TEXT(card, 6, "qdouhdl");
3685         if (qdio_error & QDIO_ERROR_FATAL) {
3686                 QETH_CARD_TEXT(card, 2, "achkcond");
3687                 netif_stop_queue(card->dev);
3688                 qeth_schedule_recovery(card);
3689                 return;
3690         }
3691         if (card->options.performance_stats) {
3692                 card->perf_stats.outbound_handler_cnt++;
3693                 card->perf_stats.outbound_handler_start_time =
3694                         qeth_get_micros();
3695         }
3696         for (i = first_element; i < (first_element + count); ++i) {
3697                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3698                 buffer = queue->bufs[bidx];
3699                 qeth_handle_send_error(card, buffer, qdio_error);
3700
3701                 if (queue->bufstates &&
3702                     (queue->bufstates[bidx].flags &
3703                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3704                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3705
3706                         if (atomic_cmpxchg(&buffer->state,
3707                                            QETH_QDIO_BUF_PRIMED,
3708                                            QETH_QDIO_BUF_PENDING) ==
3709                                 QETH_QDIO_BUF_PRIMED) {
3710                                 qeth_notify_skbs(queue, buffer,
3711                                                  TX_NOTIFY_PENDING);
3712                         }
3713                         buffer->aob = queue->bufstates[bidx].aob;
3714                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3715                         QETH_CARD_TEXT(queue->card, 5, "aob");
3716                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3717                                         virt_to_phys(buffer->aob));
3718                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3719                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3720                                 qeth_schedule_recovery(card);
3721                         }
3722                 } else {
3723                         if (card->options.cq == QETH_CQ_ENABLED) {
3724                                 enum iucv_tx_notify n;
3725
3726                                 n = qeth_compute_cq_notification(
3727                                         buffer->buffer->element[15].sflags, 0);
3728                                 qeth_notify_skbs(queue, buffer, n);
3729                         }
3730
3731                         qeth_clear_output_buffer(queue, buffer,
3732                                                 QETH_QDIO_BUF_EMPTY);
3733                 }
3734                 qeth_cleanup_handled_pending(queue, bidx, 0);
3735         }
3736         atomic_sub(count, &queue->used_buffers);
3737         /* check if we need to do something on this outbound queue */
3738         if (card->info.type != QETH_CARD_TYPE_IQD)
3739                 qeth_check_outbound_queue(queue);
3740
3741         netif_wake_queue(queue->card->dev);
3742         if (card->options.performance_stats)
3743                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3744                         card->perf_stats.outbound_handler_start_time;
3745 }
3746 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3747
3748 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3749 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3750 {
3751         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3752                 return 2;
3753         return queue_num;
3754 }
3755
3756 /**
3757  * Note: Function assumes that we have 4 outbound queues.
3758  */
3759 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3760                         int ipv, int cast_type)
3761 {
3762         __be16 *tci;
3763         u8 tos;
3764
3765         if (cast_type && card->info.is_multicast_different)
3766                 return card->info.is_multicast_different &
3767                         (card->qdio.no_out_queues - 1);
3768
3769         switch (card->qdio.do_prio_queueing) {
3770         case QETH_PRIO_Q_ING_TOS:
3771         case QETH_PRIO_Q_ING_PREC:
3772                 switch (ipv) {
3773                 case 4:
3774                         tos = ipv4_get_dsfield(ip_hdr(skb));
3775                         break;
3776                 case 6:
3777                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3778                         break;
3779                 default:
3780                         return card->qdio.default_out_queue;
3781                 }
3782                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3783                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3784                 if (tos & IPTOS_MINCOST)
3785                         return qeth_cut_iqd_prio(card, 3);
3786                 if (tos & IPTOS_RELIABILITY)
3787                         return 2;
3788                 if (tos & IPTOS_THROUGHPUT)
3789                         return 1;
3790                 if (tos & IPTOS_LOWDELAY)
3791                         return 0;
3792                 break;
3793         case QETH_PRIO_Q_ING_SKB:
3794                 if (skb->priority > 5)
3795                         return 0;
3796                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3797         case QETH_PRIO_Q_ING_VLAN:
3798                 tci = &((struct ethhdr *)skb->data)->h_proto;
3799                 if (*tci == ETH_P_8021Q)
3800                         return qeth_cut_iqd_prio(card, ~*(tci + 1) >>
3801                         (VLAN_PRIO_SHIFT + 1) & 3);
3802                 break;
3803         default:
3804                 break;
3805         }
3806         return card->qdio.default_out_queue;
3807 }
3808 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3809
3810 /**
3811  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3812  * @skb:                                SKB address
3813  *
3814  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3815  * fragmented part of the SKB. Returns zero for linear SKB.
3816  */
3817 int qeth_get_elements_for_frags(struct sk_buff *skb)
3818 {
3819         int cnt, elements = 0;
3820
3821         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3822                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3823
3824                 elements += qeth_get_elements_for_range(
3825                         (addr_t)skb_frag_address(frag),
3826                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3827         }
3828         return elements;
3829 }
3830 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3831
3832 /**
3833  * qeth_get_elements_no() -     find number of SBALEs for skb data, inc. frags.
3834  * @card:                       qeth card structure, to check max. elems.
3835  * @skb:                        SKB address
3836  * @extra_elems:                extra elems needed, to check against max.
3837  * @data_offset:                range starts at skb->data + data_offset
3838  *
3839  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3840  * skb data, including linear part and fragments. Checks if the result plus
3841  * extra_elems fits under the limit for the card. Returns 0 if it does not.
3842  * Note: extra_elems is not included in the returned result.
3843  */
3844 int qeth_get_elements_no(struct qeth_card *card,
3845                      struct sk_buff *skb, int extra_elems, int data_offset)
3846 {
3847         int elements = qeth_get_elements_for_range(
3848                                 (addr_t)skb->data + data_offset,
3849                                 (addr_t)skb->data + skb_headlen(skb)) +
3850                         qeth_get_elements_for_frags(skb);
3851
3852         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3853                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3854                         "(Number=%d / Length=%d). Discarded.\n",
3855                         elements + extra_elems, skb->len);
3856                 return 0;
3857         }
3858         return elements;
3859 }
3860 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3861
3862 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3863 {
3864         int hroom, inpage, rest;
3865
3866         if (((unsigned long)skb->data & PAGE_MASK) !=
3867             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3868                 hroom = skb_headroom(skb);
3869                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3870                 rest = len - inpage;
3871                 if (rest > hroom)
3872                         return 1;
3873                 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3874                 skb->data -= rest;
3875                 skb->tail -= rest;
3876                 *hdr = (struct qeth_hdr *)skb->data;
3877                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3878         }
3879         return 0;
3880 }
3881 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3882
3883 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3884         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3885         int offset)
3886 {
3887         int length = skb_headlen(skb);
3888         int length_here;
3889         int element;
3890         char *data;
3891         int first_lap, cnt;
3892         struct skb_frag_struct *frag;
3893
3894         element = *next_element_to_fill;
3895         data = skb->data;
3896         first_lap = (is_tso == 0 ? 1 : 0);
3897
3898         if (offset >= 0) {
3899                 data = skb->data + offset;
3900                 length -= offset;
3901                 first_lap = 0;
3902         }
3903
3904         while (length > 0) {
3905                 /* length_here is the remaining amount of data in this page */
3906                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3907                 if (length < length_here)
3908                         length_here = length;
3909
3910                 buffer->element[element].addr = data;
3911                 buffer->element[element].length = length_here;
3912                 length -= length_here;
3913                 if (!length) {
3914                         if (first_lap)
3915                                 if (skb_shinfo(skb)->nr_frags)
3916                                         buffer->element[element].eflags =
3917                                                 SBAL_EFLAGS_FIRST_FRAG;
3918                                 else
3919                                         buffer->element[element].eflags = 0;
3920                         else
3921                                 buffer->element[element].eflags =
3922                                     SBAL_EFLAGS_MIDDLE_FRAG;
3923                 } else {
3924                         if (first_lap)
3925                                 buffer->element[element].eflags =
3926                                     SBAL_EFLAGS_FIRST_FRAG;
3927                         else
3928                                 buffer->element[element].eflags =
3929                                     SBAL_EFLAGS_MIDDLE_FRAG;
3930                 }
3931                 data += length_here;
3932                 element++;
3933                 first_lap = 0;
3934         }
3935
3936         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3937                 frag = &skb_shinfo(skb)->frags[cnt];
3938                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3939                         frag->page_offset;
3940                 length = frag->size;
3941                 while (length > 0) {
3942                         length_here = PAGE_SIZE -
3943                                 ((unsigned long) data % PAGE_SIZE);
3944                         if (length < length_here)
3945                                 length_here = length;
3946
3947                         buffer->element[element].addr = data;
3948                         buffer->element[element].length = length_here;
3949                         buffer->element[element].eflags =
3950                                 SBAL_EFLAGS_MIDDLE_FRAG;
3951                         length -= length_here;
3952                         data += length_here;
3953                         element++;
3954                 }
3955         }
3956
3957         if (buffer->element[element - 1].eflags)
3958                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3959         *next_element_to_fill = element;
3960 }
3961
3962 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3963                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3964                 struct qeth_hdr *hdr, int offset, int hd_len)
3965 {
3966         struct qdio_buffer *buffer;
3967         int flush_cnt = 0, hdr_len, large_send = 0;
3968
3969         buffer = buf->buffer;
3970         atomic_inc(&skb->users);
3971         skb_queue_tail(&buf->skb_list, skb);
3972
3973         /*check first on TSO ....*/
3974         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3975                 int element = buf->next_element_to_fill;
3976
3977                 hdr_len = sizeof(struct qeth_hdr_tso) +
3978                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3979                 /*fill first buffer entry only with header information */
3980                 buffer->element[element].addr = skb->data;
3981                 buffer->element[element].length = hdr_len;
3982                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3983                 buf->next_element_to_fill++;
3984                 skb->data += hdr_len;
3985                 skb->len  -= hdr_len;
3986                 large_send = 1;
3987         }
3988
3989         if (offset >= 0) {
3990                 int element = buf->next_element_to_fill;
3991                 buffer->element[element].addr = hdr;
3992                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3993                                                         hd_len;
3994                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3995                 buf->is_header[element] = 1;
3996                 buf->next_element_to_fill++;
3997         }
3998
3999         __qeth_fill_buffer(skb, buffer, large_send,
4000                 (int *)&buf->next_element_to_fill, offset);
4001
4002         if (!queue->do_pack) {
4003                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4004                 /* set state to PRIMED -> will be flushed */
4005                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4006                 flush_cnt = 1;
4007         } else {
4008                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4009                 if (queue->card->options.performance_stats)
4010                         queue->card->perf_stats.skbs_sent_pack++;
4011                 if (buf->next_element_to_fill >=
4012                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4013                         /*
4014                          * packed buffer if full -> set state PRIMED
4015                          * -> will be flushed
4016                          */
4017                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4018                         flush_cnt = 1;
4019                 }
4020         }
4021         return flush_cnt;
4022 }
4023
4024 int qeth_do_send_packet_fast(struct qeth_card *card,
4025                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4026                 struct qeth_hdr *hdr, int elements_needed,
4027                 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 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 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4483
4484 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4485                 struct qeth_cmd_buffer *iob, int len,
4486                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4487                         unsigned long),
4488                 void *reply_param)
4489 {
4490         u16 s1, s2;
4491
4492         QETH_CARD_TEXT(card, 4, "sendsnmp");
4493
4494         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4495         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4496                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4497         /* adjust PDU length fields in IPA_PDU_HEADER */
4498         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4499         s2 = (u32) len;
4500         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4501         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4502         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4503         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4504         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4505                                       reply_cb, reply_param);
4506 }
4507
4508 static int qeth_snmp_command_cb(struct qeth_card *card,
4509                 struct qeth_reply *reply, unsigned long sdata)
4510 {
4511         struct qeth_ipa_cmd *cmd;
4512         struct qeth_arp_query_info *qinfo;
4513         struct qeth_snmp_cmd *snmp;
4514         unsigned char *data;
4515         __u16 data_len;
4516
4517         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4518
4519         cmd = (struct qeth_ipa_cmd *) sdata;
4520         data = (unsigned char *)((char *)cmd - reply->offset);
4521         qinfo = (struct qeth_arp_query_info *) reply->param;
4522         snmp = &cmd->data.setadapterparms.data.snmp;
4523
4524         if (cmd->hdr.return_code) {
4525                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4526                 return 0;
4527         }
4528         if (cmd->data.setadapterparms.hdr.return_code) {
4529                 cmd->hdr.return_code =
4530                         cmd->data.setadapterparms.hdr.return_code;
4531                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4532                 return 0;
4533         }
4534         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4535         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4536                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4537         else
4538                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4539
4540         /* check if there is enough room in userspace */
4541         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4542                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4543                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4544                 return 0;
4545         }
4546         QETH_CARD_TEXT_(card, 4, "snore%i",
4547                        cmd->data.setadapterparms.hdr.used_total);
4548         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4549                 cmd->data.setadapterparms.hdr.seq_no);
4550         /*copy entries to user buffer*/
4551         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4552                 memcpy(qinfo->udata + qinfo->udata_offset,
4553                        (char *)snmp,
4554                        data_len + offsetof(struct qeth_snmp_cmd, data));
4555                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4556         } else {
4557                 memcpy(qinfo->udata + qinfo->udata_offset,
4558                        (char *)&snmp->request, data_len);
4559         }
4560         qinfo->udata_offset += data_len;
4561         /* check if all replies received ... */
4562                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4563                                cmd->data.setadapterparms.hdr.used_total);
4564                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4565                                cmd->data.setadapterparms.hdr.seq_no);
4566         if (cmd->data.setadapterparms.hdr.seq_no <
4567             cmd->data.setadapterparms.hdr.used_total)
4568                 return 1;
4569         return 0;
4570 }
4571
4572 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4573 {
4574         struct qeth_cmd_buffer *iob;
4575         struct qeth_ipa_cmd *cmd;
4576         struct qeth_snmp_ureq *ureq;
4577         unsigned int req_len;
4578         struct qeth_arp_query_info qinfo = {0, };
4579         int rc = 0;
4580
4581         QETH_CARD_TEXT(card, 3, "snmpcmd");
4582
4583         if (card->info.guestlan)
4584                 return -EOPNOTSUPP;
4585
4586         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4587             (!card->options.layer2)) {
4588                 return -EOPNOTSUPP;
4589         }
4590         /* skip 4 bytes (data_len struct member) to get req_len */
4591         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4592                 return -EFAULT;
4593         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4594                        sizeof(struct qeth_ipacmd_hdr) -
4595                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4596                 return -EINVAL;
4597         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4598         if (IS_ERR(ureq)) {
4599                 QETH_CARD_TEXT(card, 2, "snmpnome");
4600                 return PTR_ERR(ureq);
4601         }
4602         qinfo.udata_len = ureq->hdr.data_len;
4603         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4604         if (!qinfo.udata) {
4605                 kfree(ureq);
4606                 return -ENOMEM;
4607         }
4608         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4609
4610         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4611                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4612         if (!iob) {
4613                 rc = -ENOMEM;
4614                 goto out;
4615         }
4616         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4617         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4618         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4619                                     qeth_snmp_command_cb, (void *)&qinfo);
4620         if (rc)
4621                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4622                            QETH_CARD_IFNAME(card), rc);
4623         else {
4624                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4625                         rc = -EFAULT;
4626         }
4627 out:
4628         kfree(ureq);
4629         kfree(qinfo.udata);
4630         return rc;
4631 }
4632 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4633
4634 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4635                 struct qeth_reply *reply, unsigned long data)
4636 {
4637         struct qeth_ipa_cmd *cmd;
4638         struct qeth_qoat_priv *priv;
4639         char *resdata;
4640         int resdatalen;
4641
4642         QETH_CARD_TEXT(card, 3, "qoatcb");
4643
4644         cmd = (struct qeth_ipa_cmd *)data;
4645         priv = (struct qeth_qoat_priv *)reply->param;
4646         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4647         resdata = (char *)data + 28;
4648
4649         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4650                 cmd->hdr.return_code = IPA_RC_FFFF;
4651                 return 0;
4652         }
4653
4654         memcpy((priv->buffer + priv->response_len), resdata,
4655                 resdatalen);
4656         priv->response_len += resdatalen;
4657
4658         if (cmd->data.setadapterparms.hdr.seq_no <
4659             cmd->data.setadapterparms.hdr.used_total)
4660                 return 1;
4661         return 0;
4662 }
4663
4664 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4665 {
4666         int rc = 0;
4667         struct qeth_cmd_buffer *iob;
4668         struct qeth_ipa_cmd *cmd;
4669         struct qeth_query_oat *oat_req;
4670         struct qeth_query_oat_data oat_data;
4671         struct qeth_qoat_priv priv;
4672         void __user *tmp;
4673
4674         QETH_CARD_TEXT(card, 3, "qoatcmd");
4675
4676         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4677                 rc = -EOPNOTSUPP;
4678                 goto out;
4679         }
4680
4681         if (copy_from_user(&oat_data, udata,
4682             sizeof(struct qeth_query_oat_data))) {
4683                         rc = -EFAULT;
4684                         goto out;
4685         }
4686
4687         priv.buffer_len = oat_data.buffer_len;
4688         priv.response_len = 0;
4689         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4690         if (!priv.buffer) {
4691                 rc = -ENOMEM;
4692                 goto out;
4693         }
4694
4695         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4696                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4697                                    sizeof(struct qeth_query_oat));
4698         if (!iob) {
4699                 rc = -ENOMEM;
4700                 goto out_free;
4701         }
4702         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4703         oat_req = &cmd->data.setadapterparms.data.query_oat;
4704         oat_req->subcmd_code = oat_data.command;
4705
4706         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4707                                &priv);
4708         if (!rc) {
4709                 if (is_compat_task())
4710                         tmp = compat_ptr(oat_data.ptr);
4711                 else
4712                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4713
4714                 if (copy_to_user(tmp, priv.buffer,
4715                     priv.response_len)) {
4716                         rc = -EFAULT;
4717                         goto out_free;
4718                 }
4719
4720                 oat_data.response_len = priv.response_len;
4721
4722                 if (copy_to_user(udata, &oat_data,
4723                     sizeof(struct qeth_query_oat_data)))
4724                         rc = -EFAULT;
4725         } else
4726                 if (rc == IPA_RC_FFFF)
4727                         rc = -EFAULT;
4728
4729 out_free:
4730         kfree(priv.buffer);
4731 out:
4732         return rc;
4733 }
4734 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4735
4736 static int qeth_query_card_info_cb(struct qeth_card *card,
4737                                    struct qeth_reply *reply, unsigned long data)
4738 {
4739         struct qeth_ipa_cmd *cmd;
4740         struct qeth_query_card_info *card_info;
4741         struct carrier_info *carrier_info;
4742
4743         QETH_CARD_TEXT(card, 2, "qcrdincb");
4744         carrier_info = (struct carrier_info *)reply->param;
4745         cmd = (struct qeth_ipa_cmd *)data;
4746         card_info = &cmd->data.setadapterparms.data.card_info;
4747         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4748                 carrier_info->card_type = card_info->card_type;
4749                 carrier_info->port_mode = card_info->port_mode;
4750                 carrier_info->port_speed = card_info->port_speed;
4751         }
4752
4753         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4754         return 0;
4755 }
4756
4757 static int qeth_query_card_info(struct qeth_card *card,
4758                                 struct carrier_info *carrier_info)
4759 {
4760         struct qeth_cmd_buffer *iob;
4761
4762         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4763         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4764                 return -EOPNOTSUPP;
4765         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4766                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4767         if (!iob)
4768                 return -ENOMEM;
4769         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4770                                         (void *)carrier_info);
4771 }
4772
4773 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4774 {
4775         if (card->info.type == QETH_CARD_TYPE_IQD)
4776                 return QDIO_IQDIO_QFMT;
4777         else
4778                 return QDIO_QETH_QFMT;
4779 }
4780
4781 static void qeth_determine_capabilities(struct qeth_card *card)
4782 {
4783         int rc;
4784         int length;
4785         char *prcd;
4786         struct ccw_device *ddev;
4787         int ddev_offline = 0;
4788
4789         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4790         ddev = CARD_DDEV(card);
4791         if (!ddev->online) {
4792                 ddev_offline = 1;
4793                 rc = ccw_device_set_online(ddev);
4794                 if (rc) {
4795                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4796                         goto out;
4797                 }
4798         }
4799
4800         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4801         if (rc) {
4802                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4803                         dev_name(&card->gdev->dev), rc);
4804                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4805                 goto out_offline;
4806         }
4807         qeth_configure_unitaddr(card, prcd);
4808         if (ddev_offline)
4809                 qeth_configure_blkt_default(card, prcd);
4810         kfree(prcd);
4811
4812         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4813         if (rc)
4814                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4815
4816         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4817         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4818         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4819         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4820         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4821         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4822             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4823             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4824                 dev_info(&card->gdev->dev,
4825                         "Completion Queueing supported\n");
4826         } else {
4827                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4828         }
4829
4830
4831 out_offline:
4832         if (ddev_offline == 1)
4833                 ccw_device_set_offline(ddev);
4834 out:
4835         return;
4836 }
4837
4838 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4839         struct qdio_buffer **in_sbal_ptrs,
4840         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4841         int i;
4842
4843         if (card->options.cq == QETH_CQ_ENABLED) {
4844                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4845                              (card->qdio.no_in_queues - 1);
4846                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4847                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4848                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4849                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4850                 }
4851
4852                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4853         }
4854 }
4855
4856 static int qeth_qdio_establish(struct qeth_card *card)
4857 {
4858         struct qdio_initialize init_data;
4859         char *qib_param_field;
4860         struct qdio_buffer **in_sbal_ptrs;
4861         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4862         struct qdio_buffer **out_sbal_ptrs;
4863         int i, j, k;
4864         int rc = 0;
4865
4866         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4867
4868         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4869                               GFP_KERNEL);
4870         if (!qib_param_field) {
4871                 rc =  -ENOMEM;
4872                 goto out_free_nothing;
4873         }
4874
4875         qeth_create_qib_param_field(card, qib_param_field);
4876         qeth_create_qib_param_field_blkt(card, qib_param_field);
4877
4878         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4879                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4880                                GFP_KERNEL);
4881         if (!in_sbal_ptrs) {
4882                 rc = -ENOMEM;
4883                 goto out_free_qib_param;
4884         }
4885         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4886                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4887                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4888         }
4889
4890         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4891                                    GFP_KERNEL);
4892         if (!queue_start_poll) {
4893                 rc = -ENOMEM;
4894                 goto out_free_in_sbals;
4895         }
4896         for (i = 0; i < card->qdio.no_in_queues; ++i)
4897                 queue_start_poll[i] = card->discipline->start_poll;
4898
4899         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4900
4901         out_sbal_ptrs =
4902                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4903                         sizeof(void *), GFP_KERNEL);
4904         if (!out_sbal_ptrs) {
4905                 rc = -ENOMEM;
4906                 goto out_free_queue_start_poll;
4907         }
4908         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4909                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4910                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4911                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4912                 }
4913
4914         memset(&init_data, 0, sizeof(struct qdio_initialize));
4915         init_data.cdev                   = CARD_DDEV(card);
4916         init_data.q_format               = qeth_get_qdio_q_format(card);
4917         init_data.qib_param_field_format = 0;
4918         init_data.qib_param_field        = qib_param_field;
4919         init_data.no_input_qs            = card->qdio.no_in_queues;
4920         init_data.no_output_qs           = card->qdio.no_out_queues;
4921         init_data.input_handler          = card->discipline->input_handler;
4922         init_data.output_handler         = card->discipline->output_handler;
4923         init_data.queue_start_poll_array = queue_start_poll;
4924         init_data.int_parm               = (unsigned long) card;
4925         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4926         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4927         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4928         init_data.scan_threshold =
4929                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4930
4931         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4932                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4933                 rc = qdio_allocate(&init_data);
4934                 if (rc) {
4935                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4936                         goto out;
4937                 }
4938                 rc = qdio_establish(&init_data);
4939                 if (rc) {
4940                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4941                         qdio_free(CARD_DDEV(card));
4942                 }
4943         }
4944
4945         switch (card->options.cq) {
4946         case QETH_CQ_ENABLED:
4947                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4948                 break;
4949         case QETH_CQ_DISABLED:
4950                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4951                 break;
4952         default:
4953                 break;
4954         }
4955 out:
4956         kfree(out_sbal_ptrs);
4957 out_free_queue_start_poll:
4958         kfree(queue_start_poll);
4959 out_free_in_sbals:
4960         kfree(in_sbal_ptrs);
4961 out_free_qib_param:
4962         kfree(qib_param_field);
4963 out_free_nothing:
4964         return rc;
4965 }
4966
4967 static void qeth_core_free_card(struct qeth_card *card)
4968 {
4969
4970         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4971         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4972         qeth_clean_channel(&card->read);
4973         qeth_clean_channel(&card->write);
4974         if (card->dev)
4975                 free_netdev(card->dev);
4976         qeth_free_qdio_buffers(card);
4977         unregister_service_level(&card->qeth_service_level);
4978         kfree(card);
4979 }
4980
4981 void qeth_trace_features(struct qeth_card *card)
4982 {
4983         QETH_CARD_TEXT(card, 2, "features");
4984         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4985         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4986         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4987         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4988                       sizeof(card->info.diagass_support));
4989 }
4990 EXPORT_SYMBOL_GPL(qeth_trace_features);
4991
4992 static struct ccw_device_id qeth_ids[] = {
4993         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4994                                         .driver_info = QETH_CARD_TYPE_OSD},
4995         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4996                                         .driver_info = QETH_CARD_TYPE_IQD},
4997         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4998                                         .driver_info = QETH_CARD_TYPE_OSN},
4999         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5000                                         .driver_info = QETH_CARD_TYPE_OSM},
5001         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5002                                         .driver_info = QETH_CARD_TYPE_OSX},
5003         {},
5004 };
5005 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5006
5007 static struct ccw_driver qeth_ccw_driver = {
5008         .driver = {
5009                 .owner = THIS_MODULE,
5010                 .name = "qeth",
5011         },
5012         .ids = qeth_ids,
5013         .probe = ccwgroup_probe_ccwdev,
5014         .remove = ccwgroup_remove_ccwdev,
5015 };
5016
5017 int qeth_core_hardsetup_card(struct qeth_card *card)
5018 {
5019         int retries = 3;
5020         int rc;
5021
5022         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5023         atomic_set(&card->force_alloc_skb, 0);
5024         qeth_update_from_chp_desc(card);
5025 retry:
5026         if (retries < 3)
5027                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5028                         dev_name(&card->gdev->dev));
5029         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5030         ccw_device_set_offline(CARD_DDEV(card));
5031         ccw_device_set_offline(CARD_WDEV(card));
5032         ccw_device_set_offline(CARD_RDEV(card));
5033         qdio_free(CARD_DDEV(card));
5034         rc = ccw_device_set_online(CARD_RDEV(card));
5035         if (rc)
5036                 goto retriable;
5037         rc = ccw_device_set_online(CARD_WDEV(card));
5038         if (rc)
5039                 goto retriable;
5040         rc = ccw_device_set_online(CARD_DDEV(card));
5041         if (rc)
5042                 goto retriable;
5043 retriable:
5044         if (rc == -ERESTARTSYS) {
5045                 QETH_DBF_TEXT(SETUP, 2, "break1");
5046                 return rc;
5047         } else if (rc) {
5048                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5049                 if (--retries < 0)
5050                         goto out;
5051                 else
5052                         goto retry;
5053         }
5054         qeth_determine_capabilities(card);
5055         qeth_init_tokens(card);
5056         qeth_init_func_level(card);
5057         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5058         if (rc == -ERESTARTSYS) {
5059                 QETH_DBF_TEXT(SETUP, 2, "break2");
5060                 return rc;
5061         } else if (rc) {
5062                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5063                 if (--retries < 0)
5064                         goto out;
5065                 else
5066                         goto retry;
5067         }
5068         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5069         if (rc == -ERESTARTSYS) {
5070                 QETH_DBF_TEXT(SETUP, 2, "break3");
5071                 return rc;
5072         } else if (rc) {
5073                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5074                 if (--retries < 0)
5075                         goto out;
5076                 else
5077                         goto retry;
5078         }
5079         card->read_or_write_problem = 0;
5080         rc = qeth_mpc_initialize(card);
5081         if (rc) {
5082                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5083                 goto out;
5084         }
5085
5086         rc = qeth_send_startlan(card);
5087         if (rc) {
5088                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5089                 if (rc == IPA_RC_LAN_OFFLINE) {
5090                         dev_warn(&card->gdev->dev,
5091                                 "The LAN is offline\n");
5092                         card->lan_online = 0;
5093                 } else {
5094                         rc = -ENODEV;
5095                         goto out;
5096                 }
5097         } else
5098                 card->lan_online = 1;
5099
5100         card->options.ipa4.supported_funcs = 0;
5101         card->options.ipa6.supported_funcs = 0;
5102         card->options.adp.supported_funcs = 0;
5103         card->options.sbp.supported_funcs = 0;
5104         card->info.diagass_support = 0;
5105         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5106         if (rc == -ENOMEM)
5107                 goto out;
5108         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5109                 rc = qeth_query_setadapterparms(card);
5110                 if (rc < 0) {
5111                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5112                         goto out;
5113                 }
5114         }
5115         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5116                 rc = qeth_query_setdiagass(card);
5117                 if (rc < 0) {
5118                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5119                         goto out;
5120                 }
5121         }
5122         return 0;
5123 out:
5124         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5125                 "an error on the device\n");
5126         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5127                 dev_name(&card->gdev->dev), rc);
5128         return rc;
5129 }
5130 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5131
5132 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5133                 struct qdio_buffer_element *element,
5134                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5135 {
5136         struct page *page = virt_to_page(element->addr);
5137         if (*pskb == NULL) {
5138                 if (qethbuffer->rx_skb) {
5139                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5140                         *pskb = qethbuffer->rx_skb;
5141                         qethbuffer->rx_skb = NULL;
5142                 } else {
5143                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5144                         if (!(*pskb))
5145                                 return -ENOMEM;
5146                 }
5147
5148                 skb_reserve(*pskb, ETH_HLEN);
5149                 if (data_len <= QETH_RX_PULL_LEN) {
5150                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5151                                 data_len);
5152                 } else {
5153                         get_page(page);
5154                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5155                                element->addr + offset, QETH_RX_PULL_LEN);
5156                         skb_fill_page_desc(*pskb, *pfrag, page,
5157                                 offset + QETH_RX_PULL_LEN,
5158                                 data_len - QETH_RX_PULL_LEN);
5159                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5160                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5161                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5162                         (*pfrag)++;
5163                 }
5164         } else {
5165                 get_page(page);
5166                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5167                 (*pskb)->data_len += data_len;
5168                 (*pskb)->len      += data_len;
5169                 (*pskb)->truesize += data_len;
5170                 (*pfrag)++;
5171         }
5172
5173
5174         return 0;
5175 }
5176
5177 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5178 {
5179         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5180 }
5181
5182 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5183                 struct qeth_qdio_buffer *qethbuffer,
5184                 struct qdio_buffer_element **__element, int *__offset,
5185                 struct qeth_hdr **hdr)
5186 {
5187         struct qdio_buffer_element *element = *__element;
5188         struct qdio_buffer *buffer = qethbuffer->buffer;
5189         int offset = *__offset;
5190         struct sk_buff *skb = NULL;
5191         int skb_len = 0;
5192         void *data_ptr;
5193         int data_len;
5194         int headroom = 0;
5195         int use_rx_sg = 0;
5196         int frag = 0;
5197
5198         /* qeth_hdr must not cross element boundaries */
5199         if (element->length < offset + sizeof(struct qeth_hdr)) {
5200                 if (qeth_is_last_sbale(element))
5201                         return NULL;
5202                 element++;
5203                 offset = 0;
5204                 if (element->length < sizeof(struct qeth_hdr))
5205                         return NULL;
5206         }
5207         *hdr = element->addr + offset;
5208
5209         offset += sizeof(struct qeth_hdr);
5210         switch ((*hdr)->hdr.l2.id) {
5211         case QETH_HEADER_TYPE_LAYER2:
5212                 skb_len = (*hdr)->hdr.l2.pkt_length;
5213                 break;
5214         case QETH_HEADER_TYPE_LAYER3:
5215                 skb_len = (*hdr)->hdr.l3.length;
5216                 headroom = ETH_HLEN;
5217                 break;
5218         case QETH_HEADER_TYPE_OSN:
5219                 skb_len = (*hdr)->hdr.osn.pdu_length;
5220                 headroom = sizeof(struct qeth_hdr);
5221                 break;
5222         default:
5223                 break;
5224         }
5225
5226         if (!skb_len)
5227                 return NULL;
5228
5229         if (((skb_len >= card->options.rx_sg_cb) &&
5230              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5231              (!atomic_read(&card->force_alloc_skb))) ||
5232             (card->options.cq == QETH_CQ_ENABLED)) {
5233                 use_rx_sg = 1;
5234         } else {
5235                 skb = dev_alloc_skb(skb_len + headroom);
5236                 if (!skb)
5237                         goto no_mem;
5238                 if (headroom)
5239                         skb_reserve(skb, headroom);
5240         }
5241
5242         data_ptr = element->addr + offset;
5243         while (skb_len) {
5244                 data_len = min(skb_len, (int)(element->length - offset));
5245                 if (data_len) {
5246                         if (use_rx_sg) {
5247                                 if (qeth_create_skb_frag(qethbuffer, element,
5248                                     &skb, offset, &frag, data_len))
5249                                         goto no_mem;
5250                         } else {
5251                                 memcpy(skb_put(skb, data_len), data_ptr,
5252                                         data_len);
5253                         }
5254                 }
5255                 skb_len -= data_len;
5256                 if (skb_len) {
5257                         if (qeth_is_last_sbale(element)) {
5258                                 QETH_CARD_TEXT(card, 4, "unexeob");
5259                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5260                                 dev_kfree_skb_any(skb);
5261                                 card->stats.rx_errors++;
5262                                 return NULL;
5263                         }
5264                         element++;
5265                         offset = 0;
5266                         data_ptr = element->addr;
5267                 } else {
5268                         offset += data_len;
5269                 }
5270         }
5271         *__element = element;
5272         *__offset = offset;
5273         if (use_rx_sg && card->options.performance_stats) {
5274                 card->perf_stats.sg_skbs_rx++;
5275                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5276         }
5277         return skb;
5278 no_mem:
5279         if (net_ratelimit()) {
5280                 QETH_CARD_TEXT(card, 2, "noskbmem");
5281         }
5282         card->stats.rx_dropped++;
5283         return NULL;
5284 }
5285 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5286
5287 int qeth_setassparms_cb(struct qeth_card *card,
5288                         struct qeth_reply *reply, unsigned long data)
5289 {
5290         struct qeth_ipa_cmd *cmd;
5291
5292         QETH_CARD_TEXT(card, 4, "defadpcb");
5293
5294         cmd = (struct qeth_ipa_cmd *) data;
5295         if (cmd->hdr.return_code == 0) {
5296                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5297                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5298                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5299                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5300                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5301         }
5302         return 0;
5303 }
5304 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5305
5306 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5307                                                  enum qeth_ipa_funcs ipa_func,
5308                                                  __u16 cmd_code, __u16 len,
5309                                                  enum qeth_prot_versions prot)
5310 {
5311         struct qeth_cmd_buffer *iob;
5312         struct qeth_ipa_cmd *cmd;
5313
5314         QETH_CARD_TEXT(card, 4, "getasscm");
5315         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5316
5317         if (iob) {
5318                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5319                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5320                 cmd->data.setassparms.hdr.length = 8 + len;
5321                 cmd->data.setassparms.hdr.command_code = cmd_code;
5322                 cmd->data.setassparms.hdr.return_code = 0;
5323                 cmd->data.setassparms.hdr.seq_no = 0;
5324         }
5325
5326         return iob;
5327 }
5328 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5329
5330 int qeth_send_setassparms(struct qeth_card *card,
5331                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5332                           int (*reply_cb)(struct qeth_card *,
5333                                           struct qeth_reply *, unsigned long),
5334                           void *reply_param)
5335 {
5336         int rc;
5337         struct qeth_ipa_cmd *cmd;
5338
5339         QETH_CARD_TEXT(card, 4, "sendassp");
5340
5341         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5342         if (len <= sizeof(__u32))
5343                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5344         else   /* (len > sizeof(__u32)) */
5345                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5346
5347         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5348         return rc;
5349 }
5350 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5351
5352 int qeth_send_simple_setassparms(struct qeth_card *card,
5353                                  enum qeth_ipa_funcs ipa_func,
5354                                  __u16 cmd_code, long data)
5355 {
5356         int rc;
5357         int length = 0;
5358         struct qeth_cmd_buffer *iob;
5359
5360         QETH_CARD_TEXT(card, 4, "simassp4");
5361         if (data)
5362                 length = sizeof(__u32);
5363         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5364                                        length, QETH_PROT_IPV4);
5365         if (!iob)
5366                 return -ENOMEM;
5367         rc = qeth_send_setassparms(card, iob, length, data,
5368                                    qeth_setassparms_cb, NULL);
5369         return rc;
5370 }
5371 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5372
5373 static void qeth_unregister_dbf_views(void)
5374 {
5375         int x;
5376         for (x = 0; x < QETH_DBF_INFOS; x++) {
5377                 debug_unregister(qeth_dbf[x].id);
5378                 qeth_dbf[x].id = NULL;
5379         }
5380 }
5381
5382 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5383 {
5384         char dbf_txt_buf[32];
5385         va_list args;
5386
5387         if (!debug_level_enabled(id, level))
5388                 return;
5389         va_start(args, fmt);
5390         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5391         va_end(args);
5392         debug_text_event(id, level, dbf_txt_buf);
5393 }
5394 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5395
5396 static int qeth_register_dbf_views(void)
5397 {
5398         int ret;
5399         int x;
5400
5401         for (x = 0; x < QETH_DBF_INFOS; x++) {
5402                 /* register the areas */
5403                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5404                                                 qeth_dbf[x].pages,
5405                                                 qeth_dbf[x].areas,
5406                                                 qeth_dbf[x].len);
5407                 if (qeth_dbf[x].id == NULL) {
5408                         qeth_unregister_dbf_views();
5409                         return -ENOMEM;
5410                 }
5411
5412                 /* register a view */
5413                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5414                 if (ret) {
5415                         qeth_unregister_dbf_views();
5416                         return ret;
5417                 }
5418
5419                 /* set a passing level */
5420                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5421         }
5422
5423         return 0;
5424 }
5425
5426 int qeth_core_load_discipline(struct qeth_card *card,
5427                 enum qeth_discipline_id discipline)
5428 {
5429         int rc = 0;
5430         mutex_lock(&qeth_mod_mutex);
5431         switch (discipline) {
5432         case QETH_DISCIPLINE_LAYER3:
5433                 card->discipline = try_then_request_module(
5434                         symbol_get(qeth_l3_discipline), "qeth_l3");
5435                 break;
5436         case QETH_DISCIPLINE_LAYER2:
5437                 card->discipline = try_then_request_module(
5438                         symbol_get(qeth_l2_discipline), "qeth_l2");
5439                 break;
5440         }
5441         if (!card->discipline) {
5442                 dev_err(&card->gdev->dev, "There is no kernel module to "
5443                         "support discipline %d\n", discipline);
5444                 rc = -EINVAL;
5445         }
5446         mutex_unlock(&qeth_mod_mutex);
5447         return rc;
5448 }
5449
5450 void qeth_core_free_discipline(struct qeth_card *card)
5451 {
5452         if (card->options.layer2)
5453                 symbol_put(qeth_l2_discipline);
5454         else
5455                 symbol_put(qeth_l3_discipline);
5456         card->discipline = NULL;
5457 }
5458
5459 static const struct device_type qeth_generic_devtype = {
5460         .name = "qeth_generic",
5461         .groups = qeth_generic_attr_groups,
5462 };
5463 static const struct device_type qeth_osn_devtype = {
5464         .name = "qeth_osn",
5465         .groups = qeth_osn_attr_groups,
5466 };
5467
5468 #define DBF_NAME_LEN    20
5469
5470 struct qeth_dbf_entry {
5471         char dbf_name[DBF_NAME_LEN];
5472         debug_info_t *dbf_info;
5473         struct list_head dbf_list;
5474 };
5475
5476 static LIST_HEAD(qeth_dbf_list);
5477 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5478
5479 static debug_info_t *qeth_get_dbf_entry(char *name)
5480 {
5481         struct qeth_dbf_entry *entry;
5482         debug_info_t *rc = NULL;
5483
5484         mutex_lock(&qeth_dbf_list_mutex);
5485         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5486                 if (strcmp(entry->dbf_name, name) == 0) {
5487                         rc = entry->dbf_info;
5488                         break;
5489                 }
5490         }
5491         mutex_unlock(&qeth_dbf_list_mutex);
5492         return rc;
5493 }
5494
5495 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5496 {
5497         struct qeth_dbf_entry *new_entry;
5498
5499         card->debug = debug_register(name, 2, 1, 8);
5500         if (!card->debug) {
5501                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5502                 goto err;
5503         }
5504         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5505                 goto err_dbg;
5506         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5507         if (!new_entry)
5508                 goto err_dbg;
5509         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5510         new_entry->dbf_info = card->debug;
5511         mutex_lock(&qeth_dbf_list_mutex);
5512         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5513         mutex_unlock(&qeth_dbf_list_mutex);
5514
5515         return 0;
5516
5517 err_dbg:
5518         debug_unregister(card->debug);
5519 err:
5520         return -ENOMEM;
5521 }
5522
5523 static void qeth_clear_dbf_list(void)
5524 {
5525         struct qeth_dbf_entry *entry, *tmp;
5526
5527         mutex_lock(&qeth_dbf_list_mutex);
5528         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5529                 list_del(&entry->dbf_list);
5530                 debug_unregister(entry->dbf_info);
5531                 kfree(entry);
5532         }
5533         mutex_unlock(&qeth_dbf_list_mutex);
5534 }
5535
5536 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5537 {
5538         struct qeth_card *card;
5539         struct device *dev;
5540         int rc;
5541         unsigned long flags;
5542         char dbf_name[DBF_NAME_LEN];
5543
5544         QETH_DBF_TEXT(SETUP, 2, "probedev");
5545
5546         dev = &gdev->dev;
5547         if (!get_device(dev))
5548                 return -ENODEV;
5549
5550         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5551
5552         card = qeth_alloc_card();
5553         if (!card) {
5554                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5555                 rc = -ENOMEM;
5556                 goto err_dev;
5557         }
5558
5559         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5560                 dev_name(&gdev->dev));
5561         card->debug = qeth_get_dbf_entry(dbf_name);
5562         if (!card->debug) {
5563                 rc = qeth_add_dbf_entry(card, dbf_name);
5564                 if (rc)
5565                         goto err_card;
5566         }
5567
5568         card->read.ccwdev  = gdev->cdev[0];
5569         card->write.ccwdev = gdev->cdev[1];
5570         card->data.ccwdev  = gdev->cdev[2];
5571         dev_set_drvdata(&gdev->dev, card);
5572         card->gdev = gdev;
5573         gdev->cdev[0]->handler = qeth_irq;
5574         gdev->cdev[1]->handler = qeth_irq;
5575         gdev->cdev[2]->handler = qeth_irq;
5576
5577         rc = qeth_determine_card_type(card);
5578         if (rc) {
5579                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5580                 goto err_card;
5581         }
5582         rc = qeth_setup_card(card);
5583         if (rc) {
5584                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5585                 goto err_card;
5586         }
5587
5588         if (card->info.type == QETH_CARD_TYPE_OSN)
5589                 gdev->dev.type = &qeth_osn_devtype;
5590         else
5591                 gdev->dev.type = &qeth_generic_devtype;
5592
5593         switch (card->info.type) {
5594         case QETH_CARD_TYPE_OSN:
5595         case QETH_CARD_TYPE_OSM:
5596                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5597                 if (rc)
5598                         goto err_card;
5599                 rc = card->discipline->setup(card->gdev);
5600                 if (rc)
5601                         goto err_disc;
5602         case QETH_CARD_TYPE_OSD:
5603         case QETH_CARD_TYPE_OSX:
5604         default:
5605                 break;
5606         }
5607
5608         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5609         list_add_tail(&card->list, &qeth_core_card_list.list);
5610         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5611
5612         qeth_determine_capabilities(card);
5613         return 0;
5614
5615 err_disc:
5616         qeth_core_free_discipline(card);
5617 err_card:
5618         qeth_core_free_card(card);
5619 err_dev:
5620         put_device(dev);
5621         return rc;
5622 }
5623
5624 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5625 {
5626         unsigned long flags;
5627         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5628
5629         QETH_DBF_TEXT(SETUP, 2, "removedv");
5630
5631         if (card->discipline) {
5632                 card->discipline->remove(gdev);
5633                 qeth_core_free_discipline(card);
5634         }
5635
5636         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5637         list_del(&card->list);
5638         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5639         qeth_core_free_card(card);
5640         dev_set_drvdata(&gdev->dev, NULL);
5641         put_device(&gdev->dev);
5642         return;
5643 }
5644
5645 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5646 {
5647         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5648         int rc = 0;
5649         int def_discipline;
5650
5651         if (!card->discipline) {
5652                 if (card->info.type == QETH_CARD_TYPE_IQD)
5653                         def_discipline = QETH_DISCIPLINE_LAYER3;
5654                 else
5655                         def_discipline = QETH_DISCIPLINE_LAYER2;
5656                 rc = qeth_core_load_discipline(card, def_discipline);
5657                 if (rc)
5658                         goto err;
5659                 rc = card->discipline->setup(card->gdev);
5660                 if (rc)
5661                         goto err;
5662         }
5663         rc = card->discipline->set_online(gdev);
5664 err:
5665         return rc;
5666 }
5667
5668 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5669 {
5670         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5671         return card->discipline->set_offline(gdev);
5672 }
5673
5674 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5675 {
5676         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5677         if (card->discipline && card->discipline->shutdown)
5678                 card->discipline->shutdown(gdev);
5679 }
5680
5681 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5682 {
5683         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5684         if (card->discipline && card->discipline->prepare)
5685                 return card->discipline->prepare(gdev);
5686         return 0;
5687 }
5688
5689 static void qeth_core_complete(struct ccwgroup_device *gdev)
5690 {
5691         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5692         if (card->discipline && card->discipline->complete)
5693                 card->discipline->complete(gdev);
5694 }
5695
5696 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5697 {
5698         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5699         if (card->discipline && card->discipline->freeze)
5700                 return card->discipline->freeze(gdev);
5701         return 0;
5702 }
5703
5704 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5705 {
5706         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5707         if (card->discipline && card->discipline->thaw)
5708                 return card->discipline->thaw(gdev);
5709         return 0;
5710 }
5711
5712 static int qeth_core_restore(struct ccwgroup_device *gdev)
5713 {
5714         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5715         if (card->discipline && card->discipline->restore)
5716                 return card->discipline->restore(gdev);
5717         return 0;
5718 }
5719
5720 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5721         .driver = {
5722                 .owner = THIS_MODULE,
5723                 .name = "qeth",
5724         },
5725         .setup = qeth_core_probe_device,
5726         .remove = qeth_core_remove_device,
5727         .set_online = qeth_core_set_online,
5728         .set_offline = qeth_core_set_offline,
5729         .shutdown = qeth_core_shutdown,
5730         .prepare = qeth_core_prepare,
5731         .complete = qeth_core_complete,
5732         .freeze = qeth_core_freeze,
5733         .thaw = qeth_core_thaw,
5734         .restore = qeth_core_restore,
5735 };
5736
5737 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5738                                             const char *buf, size_t count)
5739 {
5740         int err;
5741
5742         err = ccwgroup_create_dev(qeth_core_root_dev,
5743                                   &qeth_core_ccwgroup_driver, 3, buf);
5744
5745         return err ? err : count;
5746 }
5747 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5748
5749 static struct attribute *qeth_drv_attrs[] = {
5750         &driver_attr_group.attr,
5751         NULL,
5752 };
5753 static struct attribute_group qeth_drv_attr_group = {
5754         .attrs = qeth_drv_attrs,
5755 };
5756 static const struct attribute_group *qeth_drv_attr_groups[] = {
5757         &qeth_drv_attr_group,
5758         NULL,
5759 };
5760
5761 static struct {
5762         const char str[ETH_GSTRING_LEN];
5763 } qeth_ethtool_stats_keys[] = {
5764 /*  0 */{"rx skbs"},
5765         {"rx buffers"},
5766         {"tx skbs"},
5767         {"tx buffers"},
5768         {"tx skbs no packing"},
5769         {"tx buffers no packing"},
5770         {"tx skbs packing"},
5771         {"tx buffers packing"},
5772         {"tx sg skbs"},
5773         {"tx sg frags"},
5774 /* 10 */{"rx sg skbs"},
5775         {"rx sg frags"},
5776         {"rx sg page allocs"},
5777         {"tx large kbytes"},
5778         {"tx large count"},
5779         {"tx pk state ch n->p"},
5780         {"tx pk state ch p->n"},
5781         {"tx pk watermark low"},
5782         {"tx pk watermark high"},
5783         {"queue 0 buffer usage"},
5784 /* 20 */{"queue 1 buffer usage"},
5785         {"queue 2 buffer usage"},
5786         {"queue 3 buffer usage"},
5787         {"rx poll time"},
5788         {"rx poll count"},
5789         {"rx do_QDIO time"},
5790         {"rx do_QDIO count"},
5791         {"tx handler time"},
5792         {"tx handler count"},
5793         {"tx time"},
5794 /* 30 */{"tx count"},
5795         {"tx do_QDIO time"},
5796         {"tx do_QDIO count"},
5797         {"tx csum"},
5798         {"tx lin"},
5799         {"tx linfail"},
5800         {"cq handler count"},
5801         {"cq handler time"}
5802 };
5803
5804 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5805 {
5806         switch (stringset) {
5807         case ETH_SS_STATS:
5808                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5809         default:
5810                 return -EINVAL;
5811         }
5812 }
5813 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5814
5815 void qeth_core_get_ethtool_stats(struct net_device *dev,
5816                 struct ethtool_stats *stats, u64 *data)
5817 {
5818         struct qeth_card *card = dev->ml_priv;
5819         data[0] = card->stats.rx_packets -
5820                                 card->perf_stats.initial_rx_packets;
5821         data[1] = card->perf_stats.bufs_rec;
5822         data[2] = card->stats.tx_packets -
5823                                 card->perf_stats.initial_tx_packets;
5824         data[3] = card->perf_stats.bufs_sent;
5825         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5826                         - card->perf_stats.skbs_sent_pack;
5827         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5828         data[6] = card->perf_stats.skbs_sent_pack;
5829         data[7] = card->perf_stats.bufs_sent_pack;
5830         data[8] = card->perf_stats.sg_skbs_sent;
5831         data[9] = card->perf_stats.sg_frags_sent;
5832         data[10] = card->perf_stats.sg_skbs_rx;
5833         data[11] = card->perf_stats.sg_frags_rx;
5834         data[12] = card->perf_stats.sg_alloc_page_rx;
5835         data[13] = (card->perf_stats.large_send_bytes >> 10);
5836         data[14] = card->perf_stats.large_send_cnt;
5837         data[15] = card->perf_stats.sc_dp_p;
5838         data[16] = card->perf_stats.sc_p_dp;
5839         data[17] = QETH_LOW_WATERMARK_PACK;
5840         data[18] = QETH_HIGH_WATERMARK_PACK;
5841         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5842         data[20] = (card->qdio.no_out_queues > 1) ?
5843                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5844         data[21] = (card->qdio.no_out_queues > 2) ?
5845                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5846         data[22] = (card->qdio.no_out_queues > 3) ?
5847                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5848         data[23] = card->perf_stats.inbound_time;
5849         data[24] = card->perf_stats.inbound_cnt;
5850         data[25] = card->perf_stats.inbound_do_qdio_time;
5851         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5852         data[27] = card->perf_stats.outbound_handler_time;
5853         data[28] = card->perf_stats.outbound_handler_cnt;
5854         data[29] = card->perf_stats.outbound_time;
5855         data[30] = card->perf_stats.outbound_cnt;
5856         data[31] = card->perf_stats.outbound_do_qdio_time;
5857         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5858         data[33] = card->perf_stats.tx_csum;
5859         data[34] = card->perf_stats.tx_lin;
5860         data[35] = card->perf_stats.tx_linfail;
5861         data[36] = card->perf_stats.cq_cnt;
5862         data[37] = card->perf_stats.cq_time;
5863 }
5864 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5865
5866 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5867 {
5868         switch (stringset) {
5869         case ETH_SS_STATS:
5870                 memcpy(data, &qeth_ethtool_stats_keys,
5871                         sizeof(qeth_ethtool_stats_keys));
5872                 break;
5873         default:
5874                 WARN_ON(1);
5875                 break;
5876         }
5877 }
5878 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5879
5880 void qeth_core_get_drvinfo(struct net_device *dev,
5881                 struct ethtool_drvinfo *info)
5882 {
5883         struct qeth_card *card = dev->ml_priv;
5884
5885         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5886                 sizeof(info->driver));
5887         strlcpy(info->version, "1.0", sizeof(info->version));
5888         strlcpy(info->fw_version, card->info.mcl_level,
5889                 sizeof(info->fw_version));
5890         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5891                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5892 }
5893 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5894
5895 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5896 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5897 /* Always advertize and support all speeds up to specified, and only one     */
5898 /* specified port type.                                                      */
5899 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5900                                 int maxspeed, int porttype)
5901 {
5902         int port_sup, port_adv, spd_sup, spd_adv;
5903
5904         switch (porttype) {
5905         case PORT_TP:
5906                 port_sup = SUPPORTED_TP;
5907                 port_adv = ADVERTISED_TP;
5908                 break;
5909         case PORT_FIBRE:
5910                 port_sup = SUPPORTED_FIBRE;
5911                 port_adv = ADVERTISED_FIBRE;
5912                 break;
5913         default:
5914                 port_sup = SUPPORTED_TP;
5915                 port_adv = ADVERTISED_TP;
5916                 WARN_ON_ONCE(1);
5917         }
5918
5919         /* "Fallthrough" case'es ordered from high to low result in setting  */
5920         /* flags cumulatively, starting from the specified speed and down to */
5921         /* the lowest possible.                                              */
5922         spd_sup = 0;
5923         spd_adv = 0;
5924         switch (maxspeed) {
5925         case SPEED_10000:
5926                 spd_sup |= SUPPORTED_10000baseT_Full;
5927                 spd_adv |= ADVERTISED_10000baseT_Full;
5928         case SPEED_1000:
5929                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5930                 spd_adv |= ADVERTISED_1000baseT_Half |
5931                                                 ADVERTISED_1000baseT_Full;
5932         case SPEED_100:
5933                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5934                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5935         case SPEED_10:
5936                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5937                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5938         break;
5939         default:
5940                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5941                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5942                 WARN_ON_ONCE(1);
5943         }
5944         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5945         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5946 }
5947
5948 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5949                                         struct ethtool_cmd *ecmd)
5950 {
5951         struct qeth_card *card = netdev->ml_priv;
5952         enum qeth_link_types link_type;
5953         struct carrier_info carrier_info;
5954         int rc;
5955         u32 speed;
5956
5957         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5958                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5959         else
5960                 link_type = card->info.link_type;
5961
5962         ecmd->transceiver = XCVR_INTERNAL;
5963         ecmd->duplex = DUPLEX_FULL;
5964         ecmd->autoneg = AUTONEG_ENABLE;
5965
5966         switch (link_type) {
5967         case QETH_LINK_TYPE_FAST_ETH:
5968         case QETH_LINK_TYPE_LANE_ETH100:
5969                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5970                 speed = SPEED_100;
5971                 ecmd->port = PORT_TP;
5972                 break;
5973
5974         case QETH_LINK_TYPE_GBIT_ETH:
5975         case QETH_LINK_TYPE_LANE_ETH1000:
5976                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5977                 speed = SPEED_1000;
5978                 ecmd->port = PORT_FIBRE;
5979                 break;
5980
5981         case QETH_LINK_TYPE_10GBIT_ETH:
5982                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5983                 speed = SPEED_10000;
5984                 ecmd->port = PORT_FIBRE;
5985                 break;
5986
5987         default:
5988                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5989                 speed = SPEED_10;
5990                 ecmd->port = PORT_TP;
5991         }
5992         ethtool_cmd_speed_set(ecmd, speed);
5993
5994         /* Check if we can obtain more accurate information.     */
5995         /* If QUERY_CARD_INFO command is not supported or fails, */
5996         /* just return the heuristics that was filled above.     */
5997         if (!qeth_card_hw_is_reachable(card))
5998                 return -ENODEV;
5999         rc = qeth_query_card_info(card, &carrier_info);
6000         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6001                 return 0;
6002         if (rc) /* report error from the hardware operation */
6003                 return rc;
6004         /* on success, fill in the information got from the hardware */
6005
6006         netdev_dbg(netdev,
6007         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6008                         carrier_info.card_type,
6009                         carrier_info.port_mode,
6010                         carrier_info.port_speed);
6011
6012         /* Update attributes for which we've obtained more authoritative */
6013         /* information, leave the rest the way they where filled above.  */
6014         switch (carrier_info.card_type) {
6015         case CARD_INFO_TYPE_1G_COPPER_A:
6016         case CARD_INFO_TYPE_1G_COPPER_B:
6017                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6018                 ecmd->port = PORT_TP;
6019                 break;
6020         case CARD_INFO_TYPE_1G_FIBRE_A:
6021         case CARD_INFO_TYPE_1G_FIBRE_B:
6022                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6023                 ecmd->port = PORT_FIBRE;
6024                 break;
6025         case CARD_INFO_TYPE_10G_FIBRE_A:
6026         case CARD_INFO_TYPE_10G_FIBRE_B:
6027                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6028                 ecmd->port = PORT_FIBRE;
6029                 break;
6030         }
6031
6032         switch (carrier_info.port_mode) {
6033         case CARD_INFO_PORTM_FULLDUPLEX:
6034                 ecmd->duplex = DUPLEX_FULL;
6035                 break;
6036         case CARD_INFO_PORTM_HALFDUPLEX:
6037                 ecmd->duplex = DUPLEX_HALF;
6038                 break;
6039         }
6040
6041         switch (carrier_info.port_speed) {
6042         case CARD_INFO_PORTS_10M:
6043                 speed = SPEED_10;
6044                 break;
6045         case CARD_INFO_PORTS_100M:
6046                 speed = SPEED_100;
6047                 break;
6048         case CARD_INFO_PORTS_1G:
6049                 speed = SPEED_1000;
6050                 break;
6051         case CARD_INFO_PORTS_10G:
6052                 speed = SPEED_10000;
6053                 break;
6054         }
6055         ethtool_cmd_speed_set(ecmd, speed);
6056
6057         return 0;
6058 }
6059 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6060
6061 /* Callback to handle checksum offload command reply from OSA card.
6062  * Verify that required features have been enabled on the card.
6063  * Return error in hdr->return_code as this value is checked by caller.
6064  *
6065  * Always returns zero to indicate no further messages from the OSA card.
6066  */
6067 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6068                                         struct qeth_reply *reply,
6069                                         unsigned long data)
6070 {
6071         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6072         struct qeth_checksum_cmd *chksum_cb =
6073                                 (struct qeth_checksum_cmd *)reply->param;
6074
6075         QETH_CARD_TEXT(card, 4, "chkdoccb");
6076         if (cmd->hdr.return_code)
6077                 return 0;
6078
6079         memset(chksum_cb, 0, sizeof(*chksum_cb));
6080         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6081                 chksum_cb->supported =
6082                                 cmd->data.setassparms.data.chksum.supported;
6083                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6084         }
6085         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6086                 chksum_cb->supported =
6087                                 cmd->data.setassparms.data.chksum.supported;
6088                 chksum_cb->enabled =
6089                                 cmd->data.setassparms.data.chksum.enabled;
6090                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6091                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6092         }
6093         return 0;
6094 }
6095
6096 /* Send command to OSA card and check results. */
6097 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6098                                      enum qeth_ipa_funcs ipa_func,
6099                                      __u16 cmd_code, long data,
6100                                      struct qeth_checksum_cmd *chksum_cb)
6101 {
6102         struct qeth_cmd_buffer *iob;
6103         int rc = -ENOMEM;
6104
6105         QETH_CARD_TEXT(card, 4, "chkdocmd");
6106         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6107                                        sizeof(__u32), QETH_PROT_IPV4);
6108         if (iob)
6109                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6110                                            qeth_ipa_checksum_run_cmd_cb,
6111                                            chksum_cb);
6112         return rc;
6113 }
6114
6115 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6116 {
6117         const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6118                                         QETH_IPA_CHECKSUM_UDP |
6119                                         QETH_IPA_CHECKSUM_TCP;
6120         struct qeth_checksum_cmd chksum_cb;
6121         int rc;
6122
6123         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6124                                        &chksum_cb);
6125         if (!rc) {
6126                 if ((required_features & chksum_cb.supported) !=
6127                     required_features)
6128                         rc = -EIO;
6129                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6130                          cstype == IPA_INBOUND_CHECKSUM)
6131                         dev_warn(&card->gdev->dev,
6132                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6133                                  QETH_CARD_IFNAME(card));
6134         }
6135         if (rc) {
6136                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6137                 dev_warn(&card->gdev->dev,
6138                          "Starting HW checksumming for %s failed, using SW checksumming\n",
6139                          QETH_CARD_IFNAME(card));
6140                 return rc;
6141         }
6142         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6143                                        chksum_cb.supported, &chksum_cb);
6144         if (!rc) {
6145                 if ((required_features & chksum_cb.enabled) !=
6146                     required_features)
6147                         rc = -EIO;
6148         }
6149         if (rc) {
6150                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6151                 dev_warn(&card->gdev->dev,
6152                          "Enabling HW checksumming for %s failed, using SW checksumming\n",
6153                          QETH_CARD_IFNAME(card));
6154                 return rc;
6155         }
6156
6157         dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6158                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6159         return 0;
6160 }
6161
6162 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6163 {
6164         int rc = (on) ? qeth_send_checksum_on(card, cstype)
6165                       : qeth_send_simple_setassparms(card, cstype,
6166                                                      IPA_CMD_ASS_STOP, 0);
6167         return rc ? -EIO : 0;
6168 }
6169
6170 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6171 {
6172         int rc;
6173
6174         QETH_CARD_TEXT(card, 3, "sttso");
6175
6176         if (on) {
6177                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6178                                                   IPA_CMD_ASS_START, 0);
6179                 if (rc) {
6180                         dev_warn(&card->gdev->dev,
6181                                  "Starting outbound TCP segmentation offload for %s failed\n",
6182                                  QETH_CARD_IFNAME(card));
6183                         return -EIO;
6184                 }
6185                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6186         } else {
6187                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6188                                                   IPA_CMD_ASS_STOP, 0);
6189         }
6190         return rc;
6191 }
6192
6193 /* try to restore device features on a device after recovery */
6194 int qeth_recover_features(struct net_device *dev)
6195 {
6196         struct qeth_card *card = dev->ml_priv;
6197         netdev_features_t recover = dev->features;
6198
6199         if (recover & NETIF_F_IP_CSUM) {
6200                 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
6201                         recover ^= NETIF_F_IP_CSUM;
6202         }
6203         if (recover & NETIF_F_RXCSUM) {
6204                 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
6205                         recover ^= NETIF_F_RXCSUM;
6206         }
6207         if (recover & NETIF_F_TSO) {
6208                 if (qeth_set_ipa_tso(card, 1))
6209                         recover ^= NETIF_F_TSO;
6210         }
6211
6212         if (recover == dev->features)
6213                 return 0;
6214
6215         dev_warn(&card->gdev->dev,
6216                  "Device recovery failed to restore all offload features\n");
6217         dev->features = recover;
6218         return -EIO;
6219 }
6220 EXPORT_SYMBOL_GPL(qeth_recover_features);
6221
6222 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6223 {
6224         struct qeth_card *card = dev->ml_priv;
6225         netdev_features_t changed = dev->features ^ features;
6226         int rc = 0;
6227
6228         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6229         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6230
6231         if ((changed & NETIF_F_IP_CSUM)) {
6232                 rc = qeth_set_ipa_csum(card,
6233                                        features & NETIF_F_IP_CSUM ? 1 : 0,
6234                                        IPA_OUTBOUND_CHECKSUM);
6235                 if (rc)
6236                         changed ^= NETIF_F_IP_CSUM;
6237         }
6238         if ((changed & NETIF_F_RXCSUM)) {
6239                 rc = qeth_set_ipa_csum(card,
6240                                         features & NETIF_F_RXCSUM ? 1 : 0,
6241                                         IPA_INBOUND_CHECKSUM);
6242                 if (rc)
6243                         changed ^= NETIF_F_RXCSUM;
6244         }
6245         if ((changed & NETIF_F_TSO)) {
6246                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6247                 if (rc)
6248                         changed ^= NETIF_F_TSO;
6249         }
6250
6251         /* everything changed successfully? */
6252         if ((dev->features ^ features) == changed)
6253                 return 0;
6254         /* something went wrong. save changed features and return error */
6255         dev->features ^= changed;
6256         return -EIO;
6257 }
6258 EXPORT_SYMBOL_GPL(qeth_set_features);
6259
6260 netdev_features_t qeth_fix_features(struct net_device *dev,
6261                                     netdev_features_t features)
6262 {
6263         struct qeth_card *card = dev->ml_priv;
6264
6265         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6266         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6267                 features &= ~NETIF_F_IP_CSUM;
6268         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6269                 features &= ~NETIF_F_RXCSUM;
6270         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
6271                 features &= ~NETIF_F_TSO;
6272                 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n",
6273                          QETH_CARD_IFNAME(card));
6274         }
6275         /* if the card isn't up, remove features that require hw changes */
6276         if (card->state == CARD_STATE_DOWN ||
6277             card->state == CARD_STATE_RECOVER)
6278                 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
6279                                         NETIF_F_TSO);
6280         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6281         return features;
6282 }
6283 EXPORT_SYMBOL_GPL(qeth_fix_features);
6284
6285 static int __init qeth_core_init(void)
6286 {
6287         int rc;
6288
6289         pr_info("loading core functions\n");
6290         INIT_LIST_HEAD(&qeth_core_card_list.list);
6291         INIT_LIST_HEAD(&qeth_dbf_list);
6292         rwlock_init(&qeth_core_card_list.rwlock);
6293         mutex_init(&qeth_mod_mutex);
6294
6295         qeth_wq = create_singlethread_workqueue("qeth_wq");
6296
6297         rc = qeth_register_dbf_views();
6298         if (rc)
6299                 goto out_err;
6300         qeth_core_root_dev = root_device_register("qeth");
6301         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6302         if (rc)
6303                 goto register_err;
6304         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6305                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6306         if (!qeth_core_header_cache) {
6307                 rc = -ENOMEM;
6308                 goto slab_err;
6309         }
6310         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6311                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6312         if (!qeth_qdio_outbuf_cache) {
6313                 rc = -ENOMEM;
6314                 goto cqslab_err;
6315         }
6316         rc = ccw_driver_register(&qeth_ccw_driver);
6317         if (rc)
6318                 goto ccw_err;
6319         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6320         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6321         if (rc)
6322                 goto ccwgroup_err;
6323
6324         return 0;
6325
6326 ccwgroup_err:
6327         ccw_driver_unregister(&qeth_ccw_driver);
6328 ccw_err:
6329         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6330 cqslab_err:
6331         kmem_cache_destroy(qeth_core_header_cache);
6332 slab_err:
6333         root_device_unregister(qeth_core_root_dev);
6334 register_err:
6335         qeth_unregister_dbf_views();
6336 out_err:
6337         pr_err("Initializing the qeth device driver failed\n");
6338         return rc;
6339 }
6340
6341 static void __exit qeth_core_exit(void)
6342 {
6343         qeth_clear_dbf_list();
6344         destroy_workqueue(qeth_wq);
6345         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6346         ccw_driver_unregister(&qeth_ccw_driver);
6347         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6348         kmem_cache_destroy(qeth_core_header_cache);
6349         root_device_unregister(qeth_core_root_dev);
6350         qeth_unregister_dbf_views();
6351         pr_info("core functions removed\n");
6352 }
6353
6354 module_init(qeth_core_init);
6355 module_exit(qeth_core_exit);
6356 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6357 MODULE_DESCRIPTION("qeth core functions");
6358 MODULE_LICENSE("GPL");