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 #include <asm/diag.h>
  31 #include <asm/cio.h>
  32 #include <asm/ccwdev.h>
  33
  34 #include "qeth_core.h"
  35
  36 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  37         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  38         /*                   N  P  A    M  L  V                      H  */
  39         [QETH_DBF_SETUP] = {"qeth_setup",
  40                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  41         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  42                             &debug_sprintf_view, NULL},
  43         [QETH_DBF_CTRL]  = {"qeth_control",
  44                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  45 };
  46 EXPORT_SYMBOL_GPL(qeth_dbf);
  47
  48 struct qeth_card_list_struct qeth_core_card_list;
  49 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  50 struct kmem_cache *qeth_core_header_cache;
  51 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  52 static struct kmem_cache *qeth_qdio_outbuf_cache;
  53
  54 static struct device *qeth_core_root_dev;
  55 static struct lock_class_key qdio_out_skb_queue_key;
  56 static struct mutex qeth_mod_mutex;
  57
  58 static void qeth_send_control_data_cb(struct qeth_channel *,
  59                         struct qeth_cmd_buffer *);
  60 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  61 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  62 static void qeth_free_buffer_pool(struct qeth_card *);
  63 static int qeth_qdio_establish(struct qeth_card *);
  64 static void qeth_free_qdio_buffers(struct qeth_card *);
  65 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  66                 struct qeth_qdio_out_buffer *buf,
  67                 enum iucv_tx_notify notification);
  68 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  69 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  70                 struct qeth_qdio_out_buffer *buf,
  71                 enum qeth_qdio_buffer_states newbufstate);
  72 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  73
  74 struct workqueue_struct *qeth_wq;
  75 EXPORT_SYMBOL_GPL(qeth_wq);
  76
  77 int qeth_card_hw_is_reachable(struct qeth_card *card)
  78 {
  79         return (card->state == CARD_STATE_SOFTSETUP) ||
  80                 (card->state == CARD_STATE_UP);
  81 }
  82 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  83
  84 static void qeth_close_dev_handler(struct work_struct *work)
  85 {
  86         struct qeth_card *card;
  87
  88         card = container_of(work, struct qeth_card, close_dev_work);
  89         QETH_CARD_TEXT(card, 2, "cldevhdl");
  90         rtnl_lock();
  91         dev_close(card->dev);
  92         rtnl_unlock();
  93         ccwgroup_set_offline(card->gdev);
  94 }
  95
  96 void qeth_close_dev(struct qeth_card *card)
  97 {
  98         QETH_CARD_TEXT(card, 2, "cldevsubm");
  99         queue_work(qeth_wq, &card->close_dev_work);
 100 }
 101 EXPORT_SYMBOL_GPL(qeth_close_dev);
 102
 103 static const char *qeth_get_cardname(struct qeth_card *card)
 104 {
 105         if (card->info.guestlan) {
 106                 switch (card->info.type) {
 107                 case QETH_CARD_TYPE_OSD:
 108                         return " Virtual NIC QDIO";
 109                 case QETH_CARD_TYPE_IQD:
 110                         return " Virtual NIC Hiper";
 111                 case QETH_CARD_TYPE_OSM:
 112                         return " Virtual NIC QDIO - OSM";
 113                 case QETH_CARD_TYPE_OSX:
 114                         return " Virtual NIC QDIO - OSX";
 115                 default:
 116                         return " unknown";
 117                 }
 118         } else {
 119                 switch (card->info.type) {
 120                 case QETH_CARD_TYPE_OSD:
 121                         return " OSD Express";
 122                 case QETH_CARD_TYPE_IQD:
 123                         return " HiperSockets";
 124                 case QETH_CARD_TYPE_OSN:
 125                         return " OSN QDIO";
 126                 case QETH_CARD_TYPE_OSM:
 127                         return " OSM QDIO";
 128                 case QETH_CARD_TYPE_OSX:
 129                         return " OSX QDIO";
 130                 default:
 131                         return " unknown";
 132                 }
 133         }
 134         return " n/a";
 135 }
 136
 137 /* max length to be returned: 14 */
 138 const char *qeth_get_cardname_short(struct qeth_card *card)
 139 {
 140         if (card->info.guestlan) {
 141                 switch (card->info.type) {
 142                 case QETH_CARD_TYPE_OSD:
 143                         return "Virt.NIC QDIO";
 144                 case QETH_CARD_TYPE_IQD:
 145                         return "Virt.NIC Hiper";
 146                 case QETH_CARD_TYPE_OSM:
 147                         return "Virt.NIC OSM";
 148                 case QETH_CARD_TYPE_OSX:
 149                         return "Virt.NIC OSX";
 150                 default:
 151                         return "unknown";
 152                 }
 153         } else {
 154                 switch (card->info.type) {
 155                 case QETH_CARD_TYPE_OSD:
 156                         switch (card->info.link_type) {
 157                         case QETH_LINK_TYPE_FAST_ETH:
 158                                 return "OSD_100";
 159                         case QETH_LINK_TYPE_HSTR:
 160                                 return "HSTR";
 161                         case QETH_LINK_TYPE_GBIT_ETH:
 162                                 return "OSD_1000";
 163                         case QETH_LINK_TYPE_10GBIT_ETH:
 164                                 return "OSD_10GIG";
 165                         case QETH_LINK_TYPE_LANE_ETH100:
 166                                 return "OSD_FE_LANE";
 167                         case QETH_LINK_TYPE_LANE_TR:
 168                                 return "OSD_TR_LANE";
 169                         case QETH_LINK_TYPE_LANE_ETH1000:
 170                                 return "OSD_GbE_LANE";
 171                         case QETH_LINK_TYPE_LANE:
 172                                 return "OSD_ATM_LANE";
 173                         default:
 174                                 return "OSD_Express";
 175                         }
 176                 case QETH_CARD_TYPE_IQD:
 177                         return "HiperSockets";
 178                 case QETH_CARD_TYPE_OSN:
 179                         return "OSN";
 180                 case QETH_CARD_TYPE_OSM:
 181                         return "OSM_1000";
 182                 case QETH_CARD_TYPE_OSX:
 183                         return "OSX_10GIG";
 184                 default:
 185                         return "unknown";
 186                 }
 187         }
 188         return "n/a";
 189 }
 190
 191 void qeth_set_recovery_task(struct qeth_card *card)
 192 {
 193         card->recovery_task = current;
 194 }
 195 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 196
 197 void qeth_clear_recovery_task(struct qeth_card *card)
 198 {
 199         card->recovery_task = NULL;
 200 }
 201 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 202
 203 static bool qeth_is_recovery_task(const struct qeth_card *card)
 204 {
 205         return card->recovery_task == current;
 206 }
 207
 208 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 209                          int clear_start_mask)
 210 {
 211         unsigned long flags;
 212
 213         spin_lock_irqsave(&card->thread_mask_lock, flags);
 214         card->thread_allowed_mask = threads;
 215         if (clear_start_mask)
 216                 card->thread_start_mask &= threads;
 217         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 218         wake_up(&card->wait_q);
 219 }
 220 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 221
 222 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 223 {
 224         unsigned long flags;
 225         int rc = 0;
 226
 227         spin_lock_irqsave(&card->thread_mask_lock, flags);
 228         rc = (card->thread_running_mask & threads);
 229         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 230         return rc;
 231 }
 232 EXPORT_SYMBOL_GPL(qeth_threads_running);
 233
 234 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 235 {
 236         if (qeth_is_recovery_task(card))
 237                 return 0;
 238         return wait_event_interruptible(card->wait_q,
 239                         qeth_threads_running(card, threads) == 0);
 240 }
 241 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 242
 243 void qeth_clear_working_pool_list(struct qeth_card *card)
 244 {
 245         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 246
 247         QETH_CARD_TEXT(card, 5, "clwrklst");
 248         list_for_each_entry_safe(pool_entry, tmp,
 249                             &card->qdio.in_buf_pool.entry_list, list){
 250                         list_del(&pool_entry->list);
 251         }
 252 }
 253 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 254
 255 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 256 {
 257         struct qeth_buffer_pool_entry *pool_entry;
 258         void *ptr;
 259         int i, j;
 260
 261         QETH_CARD_TEXT(card, 5, "alocpool");
 262         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 263                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 264                 if (!pool_entry) {
 265                         qeth_free_buffer_pool(card);
 266                         return -ENOMEM;
 267                 }
 268                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 269                         ptr = (void *) __get_free_page(GFP_KERNEL);
 270                         if (!ptr) {
 271                                 while (j > 0)
 272                                         free_page((unsigned long)
 273                                                   pool_entry->elements[--j]);
 274                                 kfree(pool_entry);
 275                                 qeth_free_buffer_pool(card);
 276                                 return -ENOMEM;
 277                         }
 278                         pool_entry->elements[j] = ptr;
 279                 }
 280                 list_add(&pool_entry->init_list,
 281                          &card->qdio.init_pool.entry_list);
 282         }
 283         return 0;
 284 }
 285
 286 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 287 {
 288         QETH_CARD_TEXT(card, 2, "realcbp");
 289
 290         if ((card->state != CARD_STATE_DOWN) &&
 291             (card->state != CARD_STATE_RECOVER))
 292                 return -EPERM;
 293
 294         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 295         qeth_clear_working_pool_list(card);
 296         qeth_free_buffer_pool(card);
 297         card->qdio.in_buf_pool.buf_count = bufcnt;
 298         card->qdio.init_pool.buf_count = bufcnt;
 299         return qeth_alloc_buffer_pool(card);
 300 }
 301 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 302
 303 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 304 {
 305         if (!q)
 306                 return;
 307
 308         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 309         kfree(q);
 310 }
 311
 312 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 313 {
 314         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 315         int i;
 316
 317         if (!q)
 318                 return NULL;
 319
 320         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 321                 kfree(q);
 322                 return NULL;
 323         }
 324
 325         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 326                 q->bufs[i].buffer = q->qdio_bufs[i];
 327
 328         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 329         return q;
 330 }
 331
 332 static int qeth_cq_init(struct qeth_card *card)
 333 {
 334         int rc;
 335
 336         if (card->options.cq == QETH_CQ_ENABLED) {
 337                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 338                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 339                                    QDIO_MAX_BUFFERS_PER_Q);
 340                 card->qdio.c_q->next_buf_to_init = 127;
 341                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 342                              card->qdio.no_in_queues - 1, 0,
 343                              127);
 344                 if (rc) {
 345                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 346                         goto out;
 347                 }
 348         }
 349         rc = 0;
 350 out:
 351         return rc;
 352 }
 353
 354 static int qeth_alloc_cq(struct qeth_card *card)
 355 {
 356         int rc;
 357
 358         if (card->options.cq == QETH_CQ_ENABLED) {
 359                 int i;
 360                 struct qdio_outbuf_state *outbuf_states;
 361
 362                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 363                 card->qdio.c_q = qeth_alloc_qdio_queue();
 364                 if (!card->qdio.c_q) {
 365                         rc = -1;
 366                         goto kmsg_out;
 367                 }
 368                 card->qdio.no_in_queues = 2;
 369                 card->qdio.out_bufstates =
 370                         kzalloc(card->qdio.no_out_queues *
 371                                 QDIO_MAX_BUFFERS_PER_Q *
 372                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 373                 outbuf_states = card->qdio.out_bufstates;
 374                 if (outbuf_states == NULL) {
 375                         rc = -1;
 376                         goto free_cq_out;
 377                 }
 378                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 379                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 380                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 381                 }
 382         } else {
 383                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 384                 card->qdio.c_q = NULL;
 385                 card->qdio.no_in_queues = 1;
 386         }
 387         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 388         rc = 0;
 389 out:
 390         return rc;
 391 free_cq_out:
 392         qeth_free_qdio_queue(card->qdio.c_q);
 393         card->qdio.c_q = NULL;
 394 kmsg_out:
 395         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 396         goto out;
 397 }
 398
 399 static void qeth_free_cq(struct qeth_card *card)
 400 {
 401         if (card->qdio.c_q) {
 402                 --card->qdio.no_in_queues;
 403                 qeth_free_qdio_queue(card->qdio.c_q);
 404                 card->qdio.c_q = NULL;
 405         }
 406         kfree(card->qdio.out_bufstates);
 407         card->qdio.out_bufstates = NULL;
 408 }
 409
 410 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 411                                                         int delayed)
 412 {
 413         enum iucv_tx_notify n;
 414
 415         switch (sbalf15) {
 416         case 0:
 417                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 418                 break;
 419         case 4:
 420         case 16:
 421         case 17:
 422         case 18:
 423                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 424                         TX_NOTIFY_UNREACHABLE;
 425                 break;
 426         default:
 427                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 428                         TX_NOTIFY_GENERALERROR;
 429                 break;
 430         }
 431
 432         return n;
 433 }
 434
 435 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
 436                                          int forced_cleanup)
 437 {
 438         if (q->card->options.cq != QETH_CQ_ENABLED)
 439                 return;
 440
 441         if (q->bufs[bidx]->next_pending != NULL) {
 442                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 443                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 444
 445                 while (c) {
 446                         if (forced_cleanup ||
 447                             atomic_read(&c->state) ==
 448                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 449                                 struct qeth_qdio_out_buffer *f = c;
 450                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 451                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 452                                 /* release here to avoid interleaving between
 453                                    outbound tasklet and inbound tasklet
 454                                    regarding notifications and lifecycle */
 455                                 qeth_release_skbs(c);
 456
 457                                 c = f->next_pending;
 458                                 WARN_ON_ONCE(head->next_pending != f);
 459                                 head->next_pending = c;
 460                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 461                         } else {
 462                                 head = c;
 463                                 c = c->next_pending;
 464                         }
 465
 466                 }
 467         }
 468         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 469                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 470                 /* for recovery situations */
 471                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 472                 qeth_init_qdio_out_buf(q, bidx);
 473                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 474         }
 475 }
 476
 477
 478 static void qeth_qdio_handle_aob(struct qeth_card *card,
 479                                  unsigned long phys_aob_addr)
 480 {
 481         struct qaob *aob;
 482         struct qeth_qdio_out_buffer *buffer;
 483         enum iucv_tx_notify notification;
 484
 485         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 486         QETH_CARD_TEXT(card, 5, "haob");
 487         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 488         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 489         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 490
 491         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 492                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 493                 notification = TX_NOTIFY_OK;
 494         } else {
 495                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 496                                                         QETH_QDIO_BUF_PENDING);
 497                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 498                 notification = TX_NOTIFY_DELAYED_OK;
 499         }
 500
 501         if (aob->aorc != 0)  {
 502                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 503                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 504         }
 505         qeth_notify_skbs(buffer->q, buffer, notification);
 506
 507         buffer->aob = NULL;
 508         qeth_clear_output_buffer(buffer->q, buffer,
 509                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 510
 511         /* from here on: do not touch buffer anymore */
 512         qdio_release_aob(aob);
 513 }
 514
 515 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 516 {
 517         return card->options.cq == QETH_CQ_ENABLED &&
 518             card->qdio.c_q != NULL &&
 519             queue != 0 &&
 520             queue == card->qdio.no_in_queues - 1;
 521 }
 522
 523
 524 static int qeth_issue_next_read(struct qeth_card *card)
 525 {
 526         int rc;
 527         struct qeth_cmd_buffer *iob;
 528
 529         QETH_CARD_TEXT(card, 5, "issnxrd");
 530         if (card->read.state != CH_STATE_UP)
 531                 return -EIO;
 532         iob = qeth_get_buffer(&card->read);
 533         if (!iob) {
 534                 dev_warn(&card->gdev->dev, "The qeth device driver "
 535                         "failed to recover an error on the device\n");
 536                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 537                         "available\n", dev_name(&card->gdev->dev));
 538                 return -ENOMEM;
 539         }
 540         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 541         QETH_CARD_TEXT(card, 6, "noirqpnd");
 542         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 543                               (addr_t) iob, 0, 0);
 544         if (rc) {
 545                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 546                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 547                 atomic_set(&card->read.irq_pending, 0);
 548                 card->read_or_write_problem = 1;
 549                 qeth_schedule_recovery(card);
 550                 wake_up(&card->wait_q);
 551         }
 552         return rc;
 553 }
 554
 555 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 556 {
 557         struct qeth_reply *reply;
 558
 559         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 560         if (reply) {
 561                 atomic_set(&reply->refcnt, 1);
 562                 atomic_set(&reply->received, 0);
 563                 reply->card = card;
 564         }
 565         return reply;
 566 }
 567
 568 static void qeth_get_reply(struct qeth_reply *reply)
 569 {
 570         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 571         atomic_inc(&reply->refcnt);
 572 }
 573
 574 static void qeth_put_reply(struct qeth_reply *reply)
 575 {
 576         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 577         if (atomic_dec_and_test(&reply->refcnt))
 578                 kfree(reply);
 579 }
 580
 581 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 582                 struct qeth_card *card)
 583 {
 584         char *ipa_name;
 585         int com = cmd->hdr.command;
 586         ipa_name = qeth_get_ipa_cmd_name(com);
 587         if (rc)
 588                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 589                                 "x%X \"%s\"\n",
 590                                 ipa_name, com, dev_name(&card->gdev->dev),
 591                                 QETH_CARD_IFNAME(card), rc,
 592                                 qeth_get_ipa_msg(rc));
 593         else
 594                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 595                                 ipa_name, com, dev_name(&card->gdev->dev),
 596                                 QETH_CARD_IFNAME(card));
 597 }
 598
 599 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 600                 struct qeth_cmd_buffer *iob)
 601 {
 602         struct qeth_ipa_cmd *cmd = NULL;
 603
 604         QETH_CARD_TEXT(card, 5, "chkipad");
 605         if (IS_IPA(iob->data)) {
 606                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 607                 if (IS_IPA_REPLY(cmd)) {
 608                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 609                             cmd->hdr.command != IPA_CMD_DELCCID &&
 610                             cmd->hdr.command != IPA_CMD_MODCCID &&
 611                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 612                                 qeth_issue_ipa_msg(cmd,
 613                                                 cmd->hdr.return_code, card);
 614                         return cmd;
 615                 } else {
 616                         switch (cmd->hdr.command) {
 617                         case IPA_CMD_STOPLAN:
 618                                 if (cmd->hdr.return_code ==
 619                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 620                                         dev_err(&card->gdev->dev,
 621                                            "Interface %s is down because the "
 622                                            "adjacent port is no longer in "
 623                                            "reflective relay mode\n",
 624                                            QETH_CARD_IFNAME(card));
 625                                         qeth_close_dev(card);
 626                                 } else {
 627                                         dev_warn(&card->gdev->dev,
 628                                            "The link for interface %s on CHPID"
 629                                            " 0x%X failed\n",
 630                                            QETH_CARD_IFNAME(card),
 631                                            card->info.chpid);
 632                                         qeth_issue_ipa_msg(cmd,
 633                                                 cmd->hdr.return_code, card);
 634                                 }
 635                                 card->lan_online = 0;
 636                                 if (card->dev && netif_carrier_ok(card->dev))
 637                                         netif_carrier_off(card->dev);
 638                                 return NULL;
 639                         case IPA_CMD_STARTLAN:
 640                                 dev_info(&card->gdev->dev,
 641                                            "The link for %s on CHPID 0x%X has"
 642                                            " been restored\n",
 643                                            QETH_CARD_IFNAME(card),
 644                                            card->info.chpid);
 645                                 netif_carrier_on(card->dev);
 646                                 card->lan_online = 1;
 647                                 if (card->info.hwtrap)
 648                                         card->info.hwtrap = 2;
 649                                 qeth_schedule_recovery(card);
 650                                 return NULL;
 651                         case IPA_CMD_SETBRIDGEPORT_IQD:
 652                         case IPA_CMD_SETBRIDGEPORT_OSA:
 653                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 654                                 if (card->discipline->control_event_handler
 655                                                                 (card, cmd))
 656                                         return cmd;
 657                                 else
 658                                         return NULL;
 659                         case IPA_CMD_MODCCID:
 660                                 return cmd;
 661                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 662                                 QETH_CARD_TEXT(card, 3, "irla");
 663                                 break;
 664                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 665                                 QETH_CARD_TEXT(card, 3, "urla");
 666                                 break;
 667                         default:
 668                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 669                                            "but not a reply!\n");
 670                                 break;
 671                         }
 672                 }
 673         }
 674         return cmd;
 675 }
 676
 677 void qeth_clear_ipacmd_list(struct qeth_card *card)
 678 {
 679         struct qeth_reply *reply, *r;
 680         unsigned long flags;
 681
 682         QETH_CARD_TEXT(card, 4, "clipalst");
 683
 684         spin_lock_irqsave(&card->lock, flags);
 685         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 686                 qeth_get_reply(reply);
 687                 reply->rc = -EIO;
 688                 atomic_inc(&reply->received);
 689                 list_del_init(&reply->list);
 690                 wake_up(&reply->wait_q);
 691                 qeth_put_reply(reply);
 692         }
 693         spin_unlock_irqrestore(&card->lock, flags);
 694         atomic_set(&card->write.irq_pending, 0);
 695 }
 696 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 697
 698 static int qeth_check_idx_response(struct qeth_card *card,
 699         unsigned char *buffer)
 700 {
 701         if (!buffer)
 702                 return 0;
 703
 704         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 705         if ((buffer[2] & 0xc0) == 0xc0) {
 706                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 707                            "with cause code 0x%02x%s\n",
 708                            buffer[4],
 709                            ((buffer[4] == 0x22) ?
 710                             " -- try another portname" : ""));
 711                 QETH_CARD_TEXT(card, 2, "ckidxres");
 712                 QETH_CARD_TEXT(card, 2, " idxterm");
 713                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 714                 if (buffer[4] == 0xf6) {
 715                         dev_err(&card->gdev->dev,
 716                         "The qeth device is not configured "
 717                         "for the OSI layer required by z/VM\n");
 718                         return -EPERM;
 719                 }
 720                 return -EIO;
 721         }
 722         return 0;
 723 }
 724
 725 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 726 {
 727         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 728                 dev_get_drvdata(&cdev->dev))->dev);
 729         return card;
 730 }
 731
 732 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 733                 __u32 len)
 734 {
 735         struct qeth_card *card;
 736
 737         card = CARD_FROM_CDEV(channel->ccwdev);
 738         QETH_CARD_TEXT(card, 4, "setupccw");
 739         if (channel == &card->read)
 740                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 741         else
 742                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 743         channel->ccw.count = len;
 744         channel->ccw.cda = (__u32) __pa(iob);
 745 }
 746
 747 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 748 {
 749         __u8 index;
 750
 751         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 752         index = channel->io_buf_no;
 753         do {
 754                 if (channel->iob[index].state == BUF_STATE_FREE) {
 755                         channel->iob[index].state = BUF_STATE_LOCKED;
 756                         channel->io_buf_no = (channel->io_buf_no + 1) %
 757                                 QETH_CMD_BUFFER_NO;
 758                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 759                         return channel->iob + index;
 760                 }
 761                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 762         } while (index != channel->io_buf_no);
 763
 764         return NULL;
 765 }
 766
 767 void qeth_release_buffer(struct qeth_channel *channel,
 768                 struct qeth_cmd_buffer *iob)
 769 {
 770         unsigned long flags;
 771
 772         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 773         spin_lock_irqsave(&channel->iob_lock, flags);
 774         memset(iob->data, 0, QETH_BUFSIZE);
 775         iob->state = BUF_STATE_FREE;
 776         iob->callback = qeth_send_control_data_cb;
 777         iob->rc = 0;
 778         spin_unlock_irqrestore(&channel->iob_lock, flags);
 779         wake_up(&channel->wait_q);
 780 }
 781 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 782
 783 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 784 {
 785         struct qeth_cmd_buffer *buffer = NULL;
 786         unsigned long flags;
 787
 788         spin_lock_irqsave(&channel->iob_lock, flags);
 789         buffer = __qeth_get_buffer(channel);
 790         spin_unlock_irqrestore(&channel->iob_lock, flags);
 791         return buffer;
 792 }
 793
 794 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 795 {
 796         struct qeth_cmd_buffer *buffer;
 797         wait_event(channel->wait_q,
 798                    ((buffer = qeth_get_buffer(channel)) != NULL));
 799         return buffer;
 800 }
 801 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 802
 803 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 804 {
 805         int cnt;
 806
 807         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 808                 qeth_release_buffer(channel, &channel->iob[cnt]);
 809         channel->buf_no = 0;
 810         channel->io_buf_no = 0;
 811 }
 812 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 813
 814 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 815                   struct qeth_cmd_buffer *iob)
 816 {
 817         struct qeth_card *card;
 818         struct qeth_reply *reply, *r;
 819         struct qeth_ipa_cmd *cmd;
 820         unsigned long flags;
 821         int keep_reply;
 822         int rc = 0;
 823
 824         card = CARD_FROM_CDEV(channel->ccwdev);
 825         QETH_CARD_TEXT(card, 4, "sndctlcb");
 826         rc = qeth_check_idx_response(card, iob->data);
 827         switch (rc) {
 828         case 0:
 829                 break;
 830         case -EIO:
 831                 qeth_clear_ipacmd_list(card);
 832                 qeth_schedule_recovery(card);
 833                 /* fall through */
 834         default:
 835                 goto out;
 836         }
 837
 838         cmd = qeth_check_ipa_data(card, iob);
 839         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 840                 goto out;
 841         /*in case of OSN : check if cmd is set */
 842         if (card->info.type == QETH_CARD_TYPE_OSN &&
 843             cmd &&
 844             cmd->hdr.command != IPA_CMD_STARTLAN &&
 845             card->osn_info.assist_cb != NULL) {
 846                 card->osn_info.assist_cb(card->dev, cmd);
 847                 goto out;
 848         }
 849
 850         spin_lock_irqsave(&card->lock, flags);
 851         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 852                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 853                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 854                         qeth_get_reply(reply);
 855                         list_del_init(&reply->list);
 856                         spin_unlock_irqrestore(&card->lock, flags);
 857                         keep_reply = 0;
 858                         if (reply->callback != NULL) {
 859                                 if (cmd) {
 860                                         reply->offset = (__u16)((char *)cmd -
 861                                                         (char *)iob->data);
 862                                         keep_reply = reply->callback(card,
 863                                                         reply,
 864                                                         (unsigned long)cmd);
 865                                 } else
 866                                         keep_reply = reply->callback(card,
 867                                                         reply,
 868                                                         (unsigned long)iob);
 869                         }
 870                         if (cmd)
 871                                 reply->rc = (u16) cmd->hdr.return_code;
 872                         else if (iob->rc)
 873                                 reply->rc = iob->rc;
 874                         if (keep_reply) {
 875                                 spin_lock_irqsave(&card->lock, flags);
 876                                 list_add_tail(&reply->list,
 877                                               &card->cmd_waiter_list);
 878                                 spin_unlock_irqrestore(&card->lock, flags);
 879                         } else {
 880                                 atomic_inc(&reply->received);
 881                                 wake_up(&reply->wait_q);
 882                         }
 883                         qeth_put_reply(reply);
 884                         goto out;
 885                 }
 886         }
 887         spin_unlock_irqrestore(&card->lock, flags);
 888 out:
 889         memcpy(&card->seqno.pdu_hdr_ack,
 890                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 891                 QETH_SEQ_NO_LENGTH);
 892         qeth_release_buffer(channel, iob);
 893 }
 894
 895 static int qeth_setup_channel(struct qeth_channel *channel)
 896 {
 897         int cnt;
 898
 899         QETH_DBF_TEXT(SETUP, 2, "setupch");
 900         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 901                 channel->iob[cnt].data =
 902                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 903                 if (channel->iob[cnt].data == NULL)
 904                         break;
 905                 channel->iob[cnt].state = BUF_STATE_FREE;
 906                 channel->iob[cnt].channel = channel;
 907                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 908                 channel->iob[cnt].rc = 0;
 909         }
 910         if (cnt < QETH_CMD_BUFFER_NO) {
 911                 while (cnt-- > 0)
 912                         kfree(channel->iob[cnt].data);
 913                 return -ENOMEM;
 914         }
 915         channel->buf_no = 0;
 916         channel->io_buf_no = 0;
 917         atomic_set(&channel->irq_pending, 0);
 918         spin_lock_init(&channel->iob_lock);
 919
 920         init_waitqueue_head(&channel->wait_q);
 921         return 0;
 922 }
 923
 924 static int qeth_set_thread_start_bit(struct qeth_card *card,
 925                 unsigned long thread)
 926 {
 927         unsigned long flags;
 928
 929         spin_lock_irqsave(&card->thread_mask_lock, flags);
 930         if (!(card->thread_allowed_mask & thread) ||
 931               (card->thread_start_mask & thread)) {
 932                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 933                 return -EPERM;
 934         }
 935         card->thread_start_mask |= thread;
 936         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 937         return 0;
 938 }
 939
 940 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 941 {
 942         unsigned long flags;
 943
 944         spin_lock_irqsave(&card->thread_mask_lock, flags);
 945         card->thread_start_mask &= ~thread;
 946         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 947         wake_up(&card->wait_q);
 948 }
 949 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 950
 951 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 952 {
 953         unsigned long flags;
 954
 955         spin_lock_irqsave(&card->thread_mask_lock, flags);
 956         card->thread_running_mask &= ~thread;
 957         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 958         wake_up(&card->wait_q);
 959 }
 960 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 961
 962 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 963 {
 964         unsigned long flags;
 965         int rc = 0;
 966
 967         spin_lock_irqsave(&card->thread_mask_lock, flags);
 968         if (card->thread_start_mask & thread) {
 969                 if ((card->thread_allowed_mask & thread) &&
 970                     !(card->thread_running_mask & thread)) {
 971                         rc = 1;
 972                         card->thread_start_mask &= ~thread;
 973                         card->thread_running_mask |= thread;
 974                 } else
 975                         rc = -EPERM;
 976         }
 977         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 978         return rc;
 979 }
 980
 981 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 982 {
 983         int rc = 0;
 984
 985         wait_event(card->wait_q,
 986                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 987         return rc;
 988 }
 989 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 990
 991 void qeth_schedule_recovery(struct qeth_card *card)
 992 {
 993         QETH_CARD_TEXT(card, 2, "startrec");
 994         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 995                 schedule_work(&card->kernel_thread_starter);
 996 }
 997 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 998
 999 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1000 {
1001         int dstat, cstat;
1002         char *sense;
1003         struct qeth_card *card;
1004
1005         sense = (char *) irb->ecw;
1006         cstat = irb->scsw.cmd.cstat;
1007         dstat = irb->scsw.cmd.dstat;
1008         card = CARD_FROM_CDEV(cdev);
1009
1010         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1011                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1012                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1013                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1014                 dev_warn(&cdev->dev, "The qeth device driver "
1015                         "failed to recover an error on the device\n");
1016                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1017                         dev_name(&cdev->dev), dstat, cstat);
1018                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1019                                 16, 1, irb, 64, 1);
1020                 return 1;
1021         }
1022
1023         if (dstat & DEV_STAT_UNIT_CHECK) {
1024                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1025                     SENSE_RESETTING_EVENT_FLAG) {
1026                         QETH_CARD_TEXT(card, 2, "REVIND");
1027                         return 1;
1028                 }
1029                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1030                     SENSE_COMMAND_REJECT_FLAG) {
1031                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1032                         return 1;
1033                 }
1034                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1035                         QETH_CARD_TEXT(card, 2, "AFFE");
1036                         return 1;
1037                 }
1038                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1039                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1040                         return 0;
1041                 }
1042                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1043                         return 1;
1044         }
1045         return 0;
1046 }
1047
1048 static long __qeth_check_irb_error(struct ccw_device *cdev,
1049                 unsigned long intparm, struct irb *irb)
1050 {
1051         struct qeth_card *card;
1052
1053         card = CARD_FROM_CDEV(cdev);
1054
1055         if (!card || !IS_ERR(irb))
1056                 return 0;
1057
1058         switch (PTR_ERR(irb)) {
1059         case -EIO:
1060                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1061                         dev_name(&cdev->dev));
1062                 QETH_CARD_TEXT(card, 2, "ckirberr");
1063                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1064                 break;
1065         case -ETIMEDOUT:
1066                 dev_warn(&cdev->dev, "A hardware operation timed out"
1067                         " on the device\n");
1068                 QETH_CARD_TEXT(card, 2, "ckirberr");
1069                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1070                 if (intparm == QETH_RCD_PARM) {
1071                         if (card->data.ccwdev == cdev) {
1072                                 card->data.state = CH_STATE_DOWN;
1073                                 wake_up(&card->wait_q);
1074                         }
1075                 }
1076                 break;
1077         default:
1078                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1079                         dev_name(&cdev->dev), PTR_ERR(irb));
1080                 QETH_CARD_TEXT(card, 2, "ckirberr");
1081                 QETH_CARD_TEXT(card, 2, "  rc???");
1082         }
1083         return PTR_ERR(irb);
1084 }
1085
1086 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1087                 struct irb *irb)
1088 {
1089         int rc;
1090         int cstat, dstat;
1091         struct qeth_cmd_buffer *buffer;
1092         struct qeth_channel *channel;
1093         struct qeth_card *card;
1094         struct qeth_cmd_buffer *iob;
1095         __u8 index;
1096
1097         if (__qeth_check_irb_error(cdev, intparm, irb))
1098                 return;
1099         cstat = irb->scsw.cmd.cstat;
1100         dstat = irb->scsw.cmd.dstat;
1101
1102         card = CARD_FROM_CDEV(cdev);
1103         if (!card)
1104                 return;
1105
1106         QETH_CARD_TEXT(card, 5, "irq");
1107
1108         if (card->read.ccwdev == cdev) {
1109                 channel = &card->read;
1110                 QETH_CARD_TEXT(card, 5, "read");
1111         } else if (card->write.ccwdev == cdev) {
1112                 channel = &card->write;
1113                 QETH_CARD_TEXT(card, 5, "write");
1114         } else {
1115                 channel = &card->data;
1116                 QETH_CARD_TEXT(card, 5, "data");
1117         }
1118         atomic_set(&channel->irq_pending, 0);
1119
1120         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1121                 channel->state = CH_STATE_STOPPED;
1122
1123         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1124                 channel->state = CH_STATE_HALTED;
1125
1126         /*let's wake up immediately on data channel*/
1127         if ((channel == &card->data) && (intparm != 0) &&
1128             (intparm != QETH_RCD_PARM))
1129                 goto out;
1130
1131         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1132                 QETH_CARD_TEXT(card, 6, "clrchpar");
1133                 /* we don't have to handle this further */
1134                 intparm = 0;
1135         }
1136         if (intparm == QETH_HALT_CHANNEL_PARM) {
1137                 QETH_CARD_TEXT(card, 6, "hltchpar");
1138                 /* we don't have to handle this further */
1139                 intparm = 0;
1140         }
1141         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1142             (dstat & DEV_STAT_UNIT_CHECK) ||
1143             (cstat)) {
1144                 if (irb->esw.esw0.erw.cons) {
1145                         dev_warn(&channel->ccwdev->dev,
1146                                 "The qeth device driver failed to recover "
1147                                 "an error on the device\n");
1148                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1149                                 "0x%X dstat 0x%X\n",
1150                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1151                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1152                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1153                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1154                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1155                 }
1156                 if (intparm == QETH_RCD_PARM) {
1157                         channel->state = CH_STATE_DOWN;
1158                         goto out;
1159                 }
1160                 rc = qeth_get_problem(cdev, irb);
1161                 if (rc) {
1162                         qeth_clear_ipacmd_list(card);
1163                         qeth_schedule_recovery(card);
1164                         goto out;
1165                 }
1166         }
1167
1168         if (intparm == QETH_RCD_PARM) {
1169                 channel->state = CH_STATE_RCD_DONE;
1170                 goto out;
1171         }
1172         if (intparm) {
1173                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1174                 buffer->state = BUF_STATE_PROCESSED;
1175         }
1176         if (channel == &card->data)
1177                 return;
1178         if (channel == &card->read &&
1179             channel->state == CH_STATE_UP)
1180                 qeth_issue_next_read(card);
1181
1182         iob = channel->iob;
1183         index = channel->buf_no;
1184         while (iob[index].state == BUF_STATE_PROCESSED) {
1185                 if (iob[index].callback != NULL)
1186                         iob[index].callback(channel, iob + index);
1187
1188                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1189         }
1190         channel->buf_no = index;
1191 out:
1192         wake_up(&card->wait_q);
1193         return;
1194 }
1195
1196 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1197                 struct qeth_qdio_out_buffer *buf,
1198                 enum iucv_tx_notify notification)
1199 {
1200         struct sk_buff *skb;
1201
1202         if (skb_queue_empty(&buf->skb_list))
1203                 goto out;
1204         skb = skb_peek(&buf->skb_list);
1205         while (skb) {
1206                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1207                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1208                 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1209                         if (skb->sk) {
1210                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1211                                 iucv->sk_txnotify(skb, notification);
1212                         }
1213                 }
1214                 if (skb_queue_is_last(&buf->skb_list, skb))
1215                         skb = NULL;
1216                 else
1217                         skb = skb_queue_next(&buf->skb_list, skb);
1218         }
1219 out:
1220         return;
1221 }
1222
1223 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1224 {
1225         struct sk_buff *skb;
1226         struct iucv_sock *iucv;
1227         int notify_general_error = 0;
1228
1229         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1230                 notify_general_error = 1;
1231
1232         /* release may never happen from within CQ tasklet scope */
1233         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1234
1235         skb = skb_dequeue(&buf->skb_list);
1236         while (skb) {
1237                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1238                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1239                 if (notify_general_error &&
1240                     be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1241                         if (skb->sk) {
1242                                 iucv = iucv_sk(skb->sk);
1243                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1244                         }
1245                 }
1246                 refcount_dec(&skb->users);
1247                 dev_kfree_skb_any(skb);
1248                 skb = skb_dequeue(&buf->skb_list);
1249         }
1250 }
1251
1252 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1253                 struct qeth_qdio_out_buffer *buf,
1254                 enum qeth_qdio_buffer_states newbufstate)
1255 {
1256         int i;
1257
1258         /* is PCI flag set on buffer? */
1259         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1260                 atomic_dec(&queue->set_pci_flags_count);
1261
1262         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1263                 qeth_release_skbs(buf);
1264         }
1265         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1266                 if (buf->buffer->element[i].addr && buf->is_header[i])
1267                         kmem_cache_free(qeth_core_header_cache,
1268                                 buf->buffer->element[i].addr);
1269                 buf->is_header[i] = 0;
1270                 buf->buffer->element[i].length = 0;
1271                 buf->buffer->element[i].addr = NULL;
1272                 buf->buffer->element[i].eflags = 0;
1273                 buf->buffer->element[i].sflags = 0;
1274         }
1275         buf->buffer->element[15].eflags = 0;
1276         buf->buffer->element[15].sflags = 0;
1277         buf->next_element_to_fill = 0;
1278         atomic_set(&buf->state, newbufstate);
1279 }
1280
1281 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1282 {
1283         int j;
1284
1285         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1286                 if (!q->bufs[j])
1287                         continue;
1288                 qeth_cleanup_handled_pending(q, j, 1);
1289                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1290                 if (free) {
1291                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1292                         q->bufs[j] = NULL;
1293                 }
1294         }
1295 }
1296
1297 void qeth_clear_qdio_buffers(struct qeth_card *card)
1298 {
1299         int i;
1300
1301         QETH_CARD_TEXT(card, 2, "clearqdbf");
1302         /* clear outbound buffers to free skbs */
1303         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1304                 if (card->qdio.out_qs[i]) {
1305                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1306                 }
1307         }
1308 }
1309 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1310
1311 static void qeth_free_buffer_pool(struct qeth_card *card)
1312 {
1313         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1314         int i = 0;
1315         list_for_each_entry_safe(pool_entry, tmp,
1316                                  &card->qdio.init_pool.entry_list, init_list){
1317                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1318                         free_page((unsigned long)pool_entry->elements[i]);
1319                 list_del(&pool_entry->init_list);
1320                 kfree(pool_entry);
1321         }
1322 }
1323
1324 static void qeth_clean_channel(struct qeth_channel *channel)
1325 {
1326         int cnt;
1327
1328         QETH_DBF_TEXT(SETUP, 2, "freech");
1329         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1330                 kfree(channel->iob[cnt].data);
1331 }
1332
1333 static void qeth_set_single_write_queues(struct qeth_card *card)
1334 {
1335         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1336             (card->qdio.no_out_queues == 4))
1337                 qeth_free_qdio_buffers(card);
1338
1339         card->qdio.no_out_queues = 1;
1340         if (card->qdio.default_out_queue != 0)
1341                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1342
1343         card->qdio.default_out_queue = 0;
1344 }
1345
1346 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1347 {
1348         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1349             (card->qdio.no_out_queues == 1)) {
1350                 qeth_free_qdio_buffers(card);
1351                 card->qdio.default_out_queue = 2;
1352         }
1353         card->qdio.no_out_queues = 4;
1354 }
1355
1356 static void qeth_update_from_chp_desc(struct qeth_card *card)
1357 {
1358         struct ccw_device *ccwdev;
1359         struct channel_path_desc *chp_dsc;
1360
1361         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1362
1363         ccwdev = card->data.ccwdev;
1364         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1365         if (!chp_dsc)
1366                 goto out;
1367
1368         card->info.func_level = 0x4100 + chp_dsc->desc;
1369         if (card->info.type == QETH_CARD_TYPE_IQD)
1370                 goto out;
1371
1372         /* CHPP field bit 6 == 1 -> single queue */
1373         if ((chp_dsc->chpp & 0x02) == 0x02)
1374                 qeth_set_single_write_queues(card);
1375         else
1376                 qeth_set_multiple_write_queues(card);
1377 out:
1378         kfree(chp_dsc);
1379         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1380         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1381 }
1382
1383 static void qeth_init_qdio_info(struct qeth_card *card)
1384 {
1385         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1386         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1387         /* inbound */
1388         card->qdio.no_in_queues = 1;
1389         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1390         if (card->info.type == QETH_CARD_TYPE_IQD)
1391                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1392         else
1393                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1394         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1395         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1396         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1397 }
1398
1399 static void qeth_set_intial_options(struct qeth_card *card)
1400 {
1401         card->options.route4.type = NO_ROUTER;
1402         card->options.route6.type = NO_ROUTER;
1403         card->options.fake_broadcast = 0;
1404         card->options.performance_stats = 0;
1405         card->options.rx_sg_cb = QETH_RX_SG_CB;
1406         card->options.isolation = ISOLATION_MODE_NONE;
1407         card->options.cq = QETH_CQ_DISABLED;
1408 }
1409
1410 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1411 {
1412         unsigned long flags;
1413         int rc = 0;
1414
1415         spin_lock_irqsave(&card->thread_mask_lock, flags);
1416         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1417                         (u8) card->thread_start_mask,
1418                         (u8) card->thread_allowed_mask,
1419                         (u8) card->thread_running_mask);
1420         rc = (card->thread_start_mask & thread);
1421         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1422         return rc;
1423 }
1424
1425 static void qeth_start_kernel_thread(struct work_struct *work)
1426 {
1427         struct task_struct *ts;
1428         struct qeth_card *card = container_of(work, struct qeth_card,
1429                                         kernel_thread_starter);
1430         QETH_CARD_TEXT(card , 2, "strthrd");
1431
1432         if (card->read.state != CH_STATE_UP &&
1433             card->write.state != CH_STATE_UP)
1434                 return;
1435         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1436                 ts = kthread_run(card->discipline->recover, (void *)card,
1437                                 "qeth_recover");
1438                 if (IS_ERR(ts)) {
1439                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1440                         qeth_clear_thread_running_bit(card,
1441                                 QETH_RECOVER_THREAD);
1442                 }
1443         }
1444 }
1445
1446 static void qeth_buffer_reclaim_work(struct work_struct *);
1447 static int qeth_setup_card(struct qeth_card *card)
1448 {
1449
1450         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1451         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1452
1453         card->read.state  = CH_STATE_DOWN;
1454         card->write.state = CH_STATE_DOWN;
1455         card->data.state  = CH_STATE_DOWN;
1456         card->state = CARD_STATE_DOWN;
1457         card->lan_online = 0;
1458         card->read_or_write_problem = 0;
1459         card->dev = NULL;
1460         spin_lock_init(&card->vlanlock);
1461         spin_lock_init(&card->mclock);
1462         spin_lock_init(&card->lock);
1463         spin_lock_init(&card->ip_lock);
1464         spin_lock_init(&card->thread_mask_lock);
1465         mutex_init(&card->conf_mutex);
1466         mutex_init(&card->discipline_mutex);
1467         card->thread_start_mask = 0;
1468         card->thread_allowed_mask = 0;
1469         card->thread_running_mask = 0;
1470         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1471         INIT_LIST_HEAD(&card->cmd_waiter_list);
1472         init_waitqueue_head(&card->wait_q);
1473         /* initial options */
1474         qeth_set_intial_options(card);
1475         /* IP address takeover */
1476         INIT_LIST_HEAD(&card->ipato.entries);
1477         card->ipato.enabled = 0;
1478         card->ipato.invert4 = 0;
1479         card->ipato.invert6 = 0;
1480         /* init QDIO stuff */
1481         qeth_init_qdio_info(card);
1482         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1483         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1484         return 0;
1485 }
1486
1487 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1488 {
1489         struct qeth_card *card = container_of(slr, struct qeth_card,
1490                                         qeth_service_level);
1491         if (card->info.mcl_level[0])
1492                 seq_printf(m, "qeth: %s firmware level %s\n",
1493                         CARD_BUS_ID(card), card->info.mcl_level);
1494 }
1495
1496 static struct qeth_card *qeth_alloc_card(void)
1497 {
1498         struct qeth_card *card;
1499
1500         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1501         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1502         if (!card)
1503                 goto out;
1504         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1505         if (qeth_setup_channel(&card->read))
1506                 goto out_ip;
1507         if (qeth_setup_channel(&card->write))
1508                 goto out_channel;
1509         card->options.layer2 = -1;
1510         card->qeth_service_level.seq_print = qeth_core_sl_print;
1511         register_service_level(&card->qeth_service_level);
1512         return card;
1513
1514 out_channel:
1515         qeth_clean_channel(&card->read);
1516 out_ip:
1517         kfree(card);
1518 out:
1519         return NULL;
1520 }
1521
1522 static void qeth_determine_card_type(struct qeth_card *card)
1523 {
1524         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1525
1526         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1527         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1528         card->info.type = CARD_RDEV(card)->id.driver_info;
1529         card->qdio.no_out_queues = QETH_MAX_QUEUES;
1530         if (card->info.type == QETH_CARD_TYPE_IQD)
1531                 card->info.is_multicast_different = 0x0103;
1532         qeth_update_from_chp_desc(card);
1533 }
1534
1535 static int qeth_clear_channel(struct qeth_channel *channel)
1536 {
1537         unsigned long flags;
1538         struct qeth_card *card;
1539         int rc;
1540
1541         card = CARD_FROM_CDEV(channel->ccwdev);
1542         QETH_CARD_TEXT(card, 3, "clearch");
1543         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1544         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1545         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1546
1547         if (rc)
1548                 return rc;
1549         rc = wait_event_interruptible_timeout(card->wait_q,
1550                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1551         if (rc == -ERESTARTSYS)
1552                 return rc;
1553         if (channel->state != CH_STATE_STOPPED)
1554                 return -ETIME;
1555         channel->state = CH_STATE_DOWN;
1556         return 0;
1557 }
1558
1559 static int qeth_halt_channel(struct qeth_channel *channel)
1560 {
1561         unsigned long flags;
1562         struct qeth_card *card;
1563         int rc;
1564
1565         card = CARD_FROM_CDEV(channel->ccwdev);
1566         QETH_CARD_TEXT(card, 3, "haltch");
1567         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1568         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1569         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1570
1571         if (rc)
1572                 return rc;
1573         rc = wait_event_interruptible_timeout(card->wait_q,
1574                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1575         if (rc == -ERESTARTSYS)
1576                 return rc;
1577         if (channel->state != CH_STATE_HALTED)
1578                 return -ETIME;
1579         return 0;
1580 }
1581
1582 static int qeth_halt_channels(struct qeth_card *card)
1583 {
1584         int rc1 = 0, rc2 = 0, rc3 = 0;
1585
1586         QETH_CARD_TEXT(card, 3, "haltchs");
1587         rc1 = qeth_halt_channel(&card->read);
1588         rc2 = qeth_halt_channel(&card->write);
1589         rc3 = qeth_halt_channel(&card->data);
1590         if (rc1)
1591                 return rc1;
1592         if (rc2)
1593                 return rc2;
1594         return rc3;
1595 }
1596
1597 static int qeth_clear_channels(struct qeth_card *card)
1598 {
1599         int rc1 = 0, rc2 = 0, rc3 = 0;
1600
1601         QETH_CARD_TEXT(card, 3, "clearchs");
1602         rc1 = qeth_clear_channel(&card->read);
1603         rc2 = qeth_clear_channel(&card->write);
1604         rc3 = qeth_clear_channel(&card->data);
1605         if (rc1)
1606                 return rc1;
1607         if (rc2)
1608                 return rc2;
1609         return rc3;
1610 }
1611
1612 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1613 {
1614         int rc = 0;
1615
1616         QETH_CARD_TEXT(card, 3, "clhacrd");
1617
1618         if (halt)
1619                 rc = qeth_halt_channels(card);
1620         if (rc)
1621                 return rc;
1622         return qeth_clear_channels(card);
1623 }
1624
1625 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1626 {
1627         int rc = 0;
1628
1629         QETH_CARD_TEXT(card, 3, "qdioclr");
1630         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1631                 QETH_QDIO_CLEANING)) {
1632         case QETH_QDIO_ESTABLISHED:
1633                 if (card->info.type == QETH_CARD_TYPE_IQD)
1634                         rc = qdio_shutdown(CARD_DDEV(card),
1635                                 QDIO_FLAG_CLEANUP_USING_HALT);
1636                 else
1637                         rc = qdio_shutdown(CARD_DDEV(card),
1638                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1639                 if (rc)
1640                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1641                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1642                 break;
1643         case QETH_QDIO_CLEANING:
1644                 return rc;
1645         default:
1646                 break;
1647         }
1648         rc = qeth_clear_halt_card(card, use_halt);
1649         if (rc)
1650                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1651         card->state = CARD_STATE_DOWN;
1652         return rc;
1653 }
1654 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1655
1656 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1657                                int *length)
1658 {
1659         struct ciw *ciw;
1660         char *rcd_buf;
1661         int ret;
1662         struct qeth_channel *channel = &card->data;
1663         unsigned long flags;
1664
1665         /*
1666          * scan for RCD command in extended SenseID data
1667          */
1668         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1669         if (!ciw || ciw->cmd == 0)
1670                 return -EOPNOTSUPP;
1671         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1672         if (!rcd_buf)
1673                 return -ENOMEM;
1674
1675         channel->ccw.cmd_code = ciw->cmd;
1676         channel->ccw.cda = (__u32) __pa(rcd_buf);
1677         channel->ccw.count = ciw->count;
1678         channel->ccw.flags = CCW_FLAG_SLI;
1679         channel->state = CH_STATE_RCD;
1680         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1681         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1682                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1683                                        QETH_RCD_TIMEOUT);
1684         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1685         if (!ret)
1686                 wait_event(card->wait_q,
1687                            (channel->state == CH_STATE_RCD_DONE ||
1688                             channel->state == CH_STATE_DOWN));
1689         if (channel->state == CH_STATE_DOWN)
1690                 ret = -EIO;
1691         else
1692                 channel->state = CH_STATE_DOWN;
1693         if (ret) {
1694                 kfree(rcd_buf);
1695                 *buffer = NULL;
1696                 *length = 0;
1697         } else {
1698                 *length = ciw->count;
1699                 *buffer = rcd_buf;
1700         }
1701         return ret;
1702 }
1703
1704 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1705 {
1706         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1707         card->info.chpid = prcd[30];
1708         card->info.unit_addr2 = prcd[31];
1709         card->info.cula = prcd[63];
1710         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1711                                (prcd[0x11] == _ascebc['M']));
1712 }
1713
1714 /* Determine whether the device requires a specific layer discipline */
1715 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1716 {
1717         if (card->info.type == QETH_CARD_TYPE_OSM ||
1718             card->info.type == QETH_CARD_TYPE_OSN) {
1719                 QETH_DBF_TEXT(SETUP, 3, "force l2");
1720                 return QETH_DISCIPLINE_LAYER2;
1721         }
1722
1723         /* virtual HiperSocket is L3 only: */
1724         if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) {
1725                 QETH_DBF_TEXT(SETUP, 3, "force l3");
1726                 return QETH_DISCIPLINE_LAYER3;
1727         }
1728
1729         QETH_DBF_TEXT(SETUP, 3, "force no");
1730         return QETH_DISCIPLINE_UNDETERMINED;
1731 }
1732
1733 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1734 {
1735         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1736
1737         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1738             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1739                 card->info.blkt.time_total = 0;
1740                 card->info.blkt.inter_packet = 0;
1741                 card->info.blkt.inter_packet_jumbo = 0;
1742         } else {
1743                 card->info.blkt.time_total = 250;
1744                 card->info.blkt.inter_packet = 5;
1745                 card->info.blkt.inter_packet_jumbo = 15;
1746         }
1747 }
1748
1749 static void qeth_init_tokens(struct qeth_card *card)
1750 {
1751         card->token.issuer_rm_w = 0x00010103UL;
1752         card->token.cm_filter_w = 0x00010108UL;
1753         card->token.cm_connection_w = 0x0001010aUL;
1754         card->token.ulp_filter_w = 0x0001010bUL;
1755         card->token.ulp_connection_w = 0x0001010dUL;
1756 }
1757
1758 static void qeth_init_func_level(struct qeth_card *card)
1759 {
1760         switch (card->info.type) {
1761         case QETH_CARD_TYPE_IQD:
1762                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1763                 break;
1764         case QETH_CARD_TYPE_OSD:
1765         case QETH_CARD_TYPE_OSN:
1766                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1767                 break;
1768         default:
1769                 break;
1770         }
1771 }
1772
1773 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1774                 void (*idx_reply_cb)(struct qeth_channel *,
1775                         struct qeth_cmd_buffer *))
1776 {
1777         struct qeth_cmd_buffer *iob;
1778         unsigned long flags;
1779         int rc;
1780         struct qeth_card *card;
1781
1782         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1783         card = CARD_FROM_CDEV(channel->ccwdev);
1784         iob = qeth_get_buffer(channel);
1785         if (!iob)
1786                 return -ENOMEM;
1787         iob->callback = idx_reply_cb;
1788         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1789         channel->ccw.count = QETH_BUFSIZE;
1790         channel->ccw.cda = (__u32) __pa(iob->data);
1791
1792         wait_event(card->wait_q,
1793                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1794         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1795         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1796         rc = ccw_device_start(channel->ccwdev,
1797                               &channel->ccw, (addr_t) iob, 0, 0);
1798         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1799
1800         if (rc) {
1801                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1802                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1803                 atomic_set(&channel->irq_pending, 0);
1804                 wake_up(&card->wait_q);
1805                 return rc;
1806         }
1807         rc = wait_event_interruptible_timeout(card->wait_q,
1808                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1809         if (rc == -ERESTARTSYS)
1810                 return rc;
1811         if (channel->state != CH_STATE_UP) {
1812                 rc = -ETIME;
1813                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1814                 qeth_clear_cmd_buffers(channel);
1815         } else
1816                 rc = 0;
1817         return rc;
1818 }
1819
1820 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1821                 void (*idx_reply_cb)(struct qeth_channel *,
1822                         struct qeth_cmd_buffer *))
1823 {
1824         struct qeth_card *card;
1825         struct qeth_cmd_buffer *iob;
1826         unsigned long flags;
1827         __u16 temp;
1828         __u8 tmp;
1829         int rc;
1830         struct ccw_dev_id temp_devid;
1831
1832         card = CARD_FROM_CDEV(channel->ccwdev);
1833
1834         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1835
1836         iob = qeth_get_buffer(channel);
1837         if (!iob)
1838                 return -ENOMEM;
1839         iob->callback = idx_reply_cb;
1840         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1841         channel->ccw.count = IDX_ACTIVATE_SIZE;
1842         channel->ccw.cda = (__u32) __pa(iob->data);
1843         if (channel == &card->write) {
1844                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1845                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1846                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1847                 card->seqno.trans_hdr++;
1848         } else {
1849                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1850                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1851                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1852         }
1853         tmp = ((__u8)card->info.portno) | 0x80;
1854         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1855         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1856                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1857         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1858                &card->info.func_level, sizeof(__u16));
1859         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1860         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1861         temp = (card->info.cula << 8) + card->info.unit_addr2;
1862         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1863
1864         wait_event(card->wait_q,
1865                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1866         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1867         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1868         rc = ccw_device_start(channel->ccwdev,
1869                               &channel->ccw, (addr_t) iob, 0, 0);
1870         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1871
1872         if (rc) {
1873                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1874                         rc);
1875                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1876                 atomic_set(&channel->irq_pending, 0);
1877                 wake_up(&card->wait_q);
1878                 return rc;
1879         }
1880         rc = wait_event_interruptible_timeout(card->wait_q,
1881                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1882         if (rc == -ERESTARTSYS)
1883                 return rc;
1884         if (channel->state != CH_STATE_ACTIVATING) {
1885                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1886                         " failed to recover an error on the device\n");
1887                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1888                         dev_name(&channel->ccwdev->dev));
1889                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1890                 qeth_clear_cmd_buffers(channel);
1891                 return -ETIME;
1892         }
1893         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1894 }
1895
1896 static int qeth_peer_func_level(int level)
1897 {
1898         if ((level & 0xff) == 8)
1899                 return (level & 0xff) + 0x400;
1900         if (((level >> 8) & 3) == 1)
1901                 return (level & 0xff) + 0x200;
1902         return level;
1903 }
1904
1905 static void qeth_idx_write_cb(struct qeth_channel *channel,
1906                 struct qeth_cmd_buffer *iob)
1907 {
1908         struct qeth_card *card;
1909         __u16 temp;
1910
1911         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1912
1913         if (channel->state == CH_STATE_DOWN) {
1914                 channel->state = CH_STATE_ACTIVATING;
1915                 goto out;
1916         }
1917         card = CARD_FROM_CDEV(channel->ccwdev);
1918
1919         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1920                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1921                         dev_err(&card->write.ccwdev->dev,
1922                                 "The adapter is used exclusively by another "
1923                                 "host\n");
1924                 else
1925                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1926                                 " negative reply\n",
1927                                 dev_name(&card->write.ccwdev->dev));
1928                 goto out;
1929         }
1930         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1931         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1932                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1933                         "function level mismatch (sent: 0x%x, received: "
1934                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1935                         card->info.func_level, temp);
1936                 goto out;
1937         }
1938         channel->state = CH_STATE_UP;
1939 out:
1940         qeth_release_buffer(channel, iob);
1941 }
1942
1943 static void qeth_idx_read_cb(struct qeth_channel *channel,
1944                 struct qeth_cmd_buffer *iob)
1945 {
1946         struct qeth_card *card;
1947         __u16 temp;
1948
1949         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1950         if (channel->state == CH_STATE_DOWN) {
1951                 channel->state = CH_STATE_ACTIVATING;
1952                 goto out;
1953         }
1954
1955         card = CARD_FROM_CDEV(channel->ccwdev);
1956         if (qeth_check_idx_response(card, iob->data))
1957                         goto out;
1958
1959         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1960                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1961                 case QETH_IDX_ACT_ERR_EXCL:
1962                         dev_err(&card->write.ccwdev->dev,
1963                                 "The adapter is used exclusively by another "
1964                                 "host\n");
1965                         break;
1966                 case QETH_IDX_ACT_ERR_AUTH:
1967                 case QETH_IDX_ACT_ERR_AUTH_USER:
1968                         dev_err(&card->read.ccwdev->dev,
1969                                 "Setting the device online failed because of "
1970                                 "insufficient authorization\n");
1971                         break;
1972                 default:
1973                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1974                                 " negative reply\n",
1975                                 dev_name(&card->read.ccwdev->dev));
1976                 }
1977                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1978                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1979                 goto out;
1980         }
1981
1982         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1983         if (temp != qeth_peer_func_level(card->info.func_level)) {
1984                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1985                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1986                         dev_name(&card->read.ccwdev->dev),
1987                         card->info.func_level, temp);
1988                 goto out;
1989         }
1990         memcpy(&card->token.issuer_rm_r,
1991                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1992                QETH_MPC_TOKEN_LENGTH);
1993         memcpy(&card->info.mcl_level[0],
1994                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1995         channel->state = CH_STATE_UP;
1996 out:
1997         qeth_release_buffer(channel, iob);
1998 }
1999
2000 void qeth_prepare_control_data(struct qeth_card *card, int len,
2001                 struct qeth_cmd_buffer *iob)
2002 {
2003         qeth_setup_ccw(&card->write, iob->data, len);
2004         iob->callback = qeth_release_buffer;
2005
2006         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2007                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2008         card->seqno.trans_hdr++;
2009         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2010                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2011         card->seqno.pdu_hdr++;
2012         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2013                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2014         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2015 }
2016 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2017
2018 /**
2019  * qeth_send_control_data() -   send control command to the card
2020  * @card:                       qeth_card structure pointer
2021  * @len:                        size of the command buffer
2022  * @iob:                        qeth_cmd_buffer pointer
2023  * @reply_cb:                   callback function pointer
2024  * @cb_card:                    pointer to the qeth_card structure
2025  * @cb_reply:                   pointer to the qeth_reply structure
2026  * @cb_cmd:                     pointer to the original iob for non-IPA
2027  *                              commands, or to the qeth_ipa_cmd structure
2028  *                              for the IPA commands.
2029  * @reply_param:                private pointer passed to the callback
2030  *
2031  * Returns the value of the `return_code' field of the response
2032  * block returned from the hardware, or other error indication.
2033  * Value of zero indicates successful execution of the command.
2034  *
2035  * Callback function gets called one or more times, with cb_cmd
2036  * pointing to the response returned by the hardware. Callback
2037  * function must return non-zero if more reply blocks are expected,
2038  * and zero if the last or only reply block is received. Callback
2039  * function can get the value of the reply_param pointer from the
2040  * field 'param' of the structure qeth_reply.
2041  */
2042
2043 int qeth_send_control_data(struct qeth_card *card, int len,
2044                 struct qeth_cmd_buffer *iob,
2045                 int (*reply_cb)(struct qeth_card *cb_card,
2046                                 struct qeth_reply *cb_reply,
2047                                 unsigned long cb_cmd),
2048                 void *reply_param)
2049 {
2050         int rc;
2051         unsigned long flags;
2052         struct qeth_reply *reply = NULL;
2053         unsigned long timeout, event_timeout;
2054         struct qeth_ipa_cmd *cmd;
2055
2056         QETH_CARD_TEXT(card, 2, "sendctl");
2057
2058         if (card->read_or_write_problem) {
2059                 qeth_release_buffer(iob->channel, iob);
2060                 return -EIO;
2061         }
2062         reply = qeth_alloc_reply(card);
2063         if (!reply) {
2064                 return -ENOMEM;
2065         }
2066         reply->callback = reply_cb;
2067         reply->param = reply_param;
2068         if (card->state == CARD_STATE_DOWN)
2069                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2070         else
2071                 reply->seqno = card->seqno.ipa++;
2072         init_waitqueue_head(&reply->wait_q);
2073         spin_lock_irqsave(&card->lock, flags);
2074         list_add_tail(&reply->list, &card->cmd_waiter_list);
2075         spin_unlock_irqrestore(&card->lock, flags);
2076
2077         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2078         qeth_prepare_control_data(card, len, iob);
2079
2080         if (IS_IPA(iob->data))
2081                 event_timeout = QETH_IPA_TIMEOUT;
2082         else
2083                 event_timeout = QETH_TIMEOUT;
2084         timeout = jiffies + event_timeout;
2085
2086         QETH_CARD_TEXT(card, 6, "noirqpnd");
2087         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2088         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2089                               (addr_t) iob, 0, 0);
2090         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2091         if (rc) {
2092                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2093                         "ccw_device_start rc = %i\n",
2094                         dev_name(&card->write.ccwdev->dev), rc);
2095                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2096                 spin_lock_irqsave(&card->lock, flags);
2097                 list_del_init(&reply->list);
2098                 qeth_put_reply(reply);
2099                 spin_unlock_irqrestore(&card->lock, flags);
2100                 qeth_release_buffer(iob->channel, iob);
2101                 atomic_set(&card->write.irq_pending, 0);
2102                 wake_up(&card->wait_q);
2103                 return rc;
2104         }
2105
2106         /* we have only one long running ipassist, since we can ensure
2107            process context of this command we can sleep */
2108         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2109         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2110             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2111                 if (!wait_event_timeout(reply->wait_q,
2112                     atomic_read(&reply->received), event_timeout))
2113                         goto time_err;
2114         } else {
2115                 while (!atomic_read(&reply->received)) {
2116                         if (time_after(jiffies, timeout))
2117                                 goto time_err;
2118                         cpu_relax();
2119                 }
2120         }
2121
2122         if (reply->rc == -EIO)
2123                 goto error;
2124         rc = reply->rc;
2125         qeth_put_reply(reply);
2126         return rc;
2127
2128 time_err:
2129         reply->rc = -ETIME;
2130         spin_lock_irqsave(&reply->card->lock, flags);
2131         list_del_init(&reply->list);
2132         spin_unlock_irqrestore(&reply->card->lock, flags);
2133         atomic_inc(&reply->received);
2134 error:
2135         atomic_set(&card->write.irq_pending, 0);
2136         qeth_release_buffer(iob->channel, iob);
2137         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2138         rc = reply->rc;
2139         qeth_put_reply(reply);
2140         return rc;
2141 }
2142 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2143
2144 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2145                 unsigned long data)
2146 {
2147         struct qeth_cmd_buffer *iob;
2148
2149         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2150
2151         iob = (struct qeth_cmd_buffer *) data;
2152         memcpy(&card->token.cm_filter_r,
2153                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2154                QETH_MPC_TOKEN_LENGTH);
2155         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2156         return 0;
2157 }
2158
2159 static int qeth_cm_enable(struct qeth_card *card)
2160 {
2161         int rc;
2162         struct qeth_cmd_buffer *iob;
2163
2164         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2165
2166         iob = qeth_wait_for_buffer(&card->write);
2167         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2168         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2169                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2170         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2171                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2172
2173         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2174                                     qeth_cm_enable_cb, NULL);
2175         return rc;
2176 }
2177
2178 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2179                 unsigned long data)
2180 {
2181
2182         struct qeth_cmd_buffer *iob;
2183
2184         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2185
2186         iob = (struct qeth_cmd_buffer *) data;
2187         memcpy(&card->token.cm_connection_r,
2188                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2189                QETH_MPC_TOKEN_LENGTH);
2190         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2191         return 0;
2192 }
2193
2194 static int qeth_cm_setup(struct qeth_card *card)
2195 {
2196         int rc;
2197         struct qeth_cmd_buffer *iob;
2198
2199         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2200
2201         iob = qeth_wait_for_buffer(&card->write);
2202         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2203         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2204                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2205         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2206                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2207         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2208                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2209         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2210                                     qeth_cm_setup_cb, NULL);
2211         return rc;
2212
2213 }
2214
2215 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2216 {
2217         switch (card->info.type) {
2218         case QETH_CARD_TYPE_IQD:
2219                 return card->info.max_mtu;
2220         case QETH_CARD_TYPE_OSD:
2221         case QETH_CARD_TYPE_OSX:
2222                 if (!card->options.layer2)
2223                         return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */
2224                 /* fall through */
2225         default:
2226                 return ETH_DATA_LEN;
2227         }
2228 }
2229
2230 static int qeth_get_mtu_outof_framesize(int framesize)
2231 {
2232         switch (framesize) {
2233         case 0x4000:
2234                 return 8192;
2235         case 0x6000:
2236                 return 16384;
2237         case 0xa000:
2238                 return 32768;
2239         case 0xffff:
2240                 return 57344;
2241         default:
2242                 return 0;
2243         }
2244 }
2245
2246 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2247 {
2248         switch (card->info.type) {
2249         case QETH_CARD_TYPE_OSD:
2250         case QETH_CARD_TYPE_OSM:
2251         case QETH_CARD_TYPE_OSX:
2252         case QETH_CARD_TYPE_IQD:
2253                 return ((mtu >= 576) &&
2254                         (mtu <= card->info.max_mtu));
2255         case QETH_CARD_TYPE_OSN:
2256         default:
2257                 return 1;
2258         }
2259 }
2260
2261 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2262                 unsigned long data)
2263 {
2264
2265         __u16 mtu, framesize;
2266         __u16 len;
2267         __u8 link_type;
2268         struct qeth_cmd_buffer *iob;
2269
2270         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2271
2272         iob = (struct qeth_cmd_buffer *) data;
2273         memcpy(&card->token.ulp_filter_r,
2274                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2275                QETH_MPC_TOKEN_LENGTH);
2276         if (card->info.type == QETH_CARD_TYPE_IQD) {
2277                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2278                 mtu = qeth_get_mtu_outof_framesize(framesize);
2279                 if (!mtu) {
2280                         iob->rc = -EINVAL;
2281                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2282                         return 0;
2283                 }
2284                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2285                         /* frame size has changed */
2286                         if (card->dev &&
2287                             ((card->dev->mtu == card->info.initial_mtu) ||
2288                              (card->dev->mtu > mtu)))
2289                                 card->dev->mtu = mtu;
2290                         qeth_free_qdio_buffers(card);
2291                 }
2292                 card->info.initial_mtu = mtu;
2293                 card->info.max_mtu = mtu;
2294                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2295         } else {
2296                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2297                         iob->data);
2298                 card->info.initial_mtu = min(card->info.max_mtu,
2299                                         qeth_get_initial_mtu_for_card(card));
2300                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2301         }
2302
2303         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2304         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2305                 memcpy(&link_type,
2306                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2307                 card->info.link_type = link_type;
2308         } else
2309                 card->info.link_type = 0;
2310         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2311         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2312         return 0;
2313 }
2314
2315 static int qeth_ulp_enable(struct qeth_card *card)
2316 {
2317         int rc;
2318         char prot_type;
2319         struct qeth_cmd_buffer *iob;
2320
2321         /*FIXME: trace view callbacks*/
2322         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2323
2324         iob = qeth_wait_for_buffer(&card->write);
2325         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2326
2327         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2328                 (__u8) card->info.portno;
2329         if (card->options.layer2)
2330                 if (card->info.type == QETH_CARD_TYPE_OSN)
2331                         prot_type = QETH_PROT_OSN2;
2332                 else
2333                         prot_type = QETH_PROT_LAYER2;
2334         else
2335                 prot_type = QETH_PROT_TCPIP;
2336
2337         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2338         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2339                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2340         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2341                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2342         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2343                                     qeth_ulp_enable_cb, NULL);
2344         return rc;
2345
2346 }
2347
2348 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2349                 unsigned long data)
2350 {
2351         struct qeth_cmd_buffer *iob;
2352
2353         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2354
2355         iob = (struct qeth_cmd_buffer *) data;
2356         memcpy(&card->token.ulp_connection_r,
2357                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2358                QETH_MPC_TOKEN_LENGTH);
2359         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2360                      3)) {
2361                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2362                 dev_err(&card->gdev->dev, "A connection could not be "
2363                         "established because of an OLM limit\n");
2364                 iob->rc = -EMLINK;
2365         }
2366         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2367         return 0;
2368 }
2369
2370 static int qeth_ulp_setup(struct qeth_card *card)
2371 {
2372         int rc;
2373         __u16 temp;
2374         struct qeth_cmd_buffer *iob;
2375         struct ccw_dev_id dev_id;
2376
2377         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2378
2379         iob = qeth_wait_for_buffer(&card->write);
2380         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2381
2382         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2383                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2384         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2385                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2386         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2387                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2388
2389         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2390         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2391         temp = (card->info.cula << 8) + card->info.unit_addr2;
2392         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2393         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2394                                     qeth_ulp_setup_cb, NULL);
2395         return rc;
2396 }
2397
2398 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2399 {
2400         int rc;
2401         struct qeth_qdio_out_buffer *newbuf;
2402
2403         rc = 0;
2404         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2405         if (!newbuf) {
2406                 rc = -ENOMEM;
2407                 goto out;
2408         }
2409         newbuf->buffer = q->qdio_bufs[bidx];
2410         skb_queue_head_init(&newbuf->skb_list);
2411         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2412         newbuf->q = q;
2413         newbuf->aob = NULL;
2414         newbuf->next_pending = q->bufs[bidx];
2415         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2416         q->bufs[bidx] = newbuf;
2417         if (q->bufstates) {
2418                 q->bufstates[bidx].user = newbuf;
2419                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2420                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2421                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2422                                 (long) newbuf->next_pending);
2423         }
2424 out:
2425         return rc;
2426 }
2427
2428 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2429 {
2430         if (!q)
2431                 return;
2432
2433         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2434         kfree(q);
2435 }
2436
2437 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2438 {
2439         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2440
2441         if (!q)
2442                 return NULL;
2443
2444         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2445                 kfree(q);
2446                 return NULL;
2447         }
2448         return q;
2449 }
2450
2451 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2452 {
2453         int i, j;
2454
2455         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2456
2457         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2458                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2459                 return 0;
2460
2461         QETH_DBF_TEXT(SETUP, 2, "inq");
2462         card->qdio.in_q = qeth_alloc_qdio_queue();
2463         if (!card->qdio.in_q)
2464                 goto out_nomem;
2465
2466         /* inbound buffer pool */
2467         if (qeth_alloc_buffer_pool(card))
2468                 goto out_freeinq;
2469
2470         /* outbound */
2471         card->qdio.out_qs =
2472                 kzalloc(card->qdio.no_out_queues *
2473                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2474         if (!card->qdio.out_qs)
2475                 goto out_freepool;
2476         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2477                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2478                 if (!card->qdio.out_qs[i])
2479                         goto out_freeoutq;
2480                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2481                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2482                 card->qdio.out_qs[i]->queue_no = i;
2483                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2484                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2485                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2486                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2487                                 goto out_freeoutqbufs;
2488                 }
2489         }
2490
2491         /* completion */
2492         if (qeth_alloc_cq(card))
2493                 goto out_freeoutq;
2494
2495         return 0;
2496
2497 out_freeoutqbufs:
2498         while (j > 0) {
2499                 --j;
2500                 kmem_cache_free(qeth_qdio_outbuf_cache,
2501                                 card->qdio.out_qs[i]->bufs[j]);
2502                 card->qdio.out_qs[i]->bufs[j] = NULL;
2503         }
2504 out_freeoutq:
2505         while (i > 0) {
2506                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2507                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2508         }
2509         kfree(card->qdio.out_qs);
2510         card->qdio.out_qs = NULL;
2511 out_freepool:
2512         qeth_free_buffer_pool(card);
2513 out_freeinq:
2514         qeth_free_qdio_queue(card->qdio.in_q);
2515         card->qdio.in_q = NULL;
2516 out_nomem:
2517         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2518         return -ENOMEM;
2519 }
2520
2521 static void qeth_free_qdio_buffers(struct qeth_card *card)
2522 {
2523         int i, j;
2524
2525         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2526                 QETH_QDIO_UNINITIALIZED)
2527                 return;
2528
2529         qeth_free_cq(card);
2530         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2531         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2532                 if (card->qdio.in_q->bufs[j].rx_skb)
2533                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2534         }
2535         qeth_free_qdio_queue(card->qdio.in_q);
2536         card->qdio.in_q = NULL;
2537         /* inbound buffer pool */
2538         qeth_free_buffer_pool(card);
2539         /* free outbound qdio_qs */
2540         if (card->qdio.out_qs) {
2541                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2542                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2543                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2544                 }
2545                 kfree(card->qdio.out_qs);
2546                 card->qdio.out_qs = NULL;
2547         }
2548 }
2549
2550 static void qeth_create_qib_param_field(struct qeth_card *card,
2551                 char *param_field)
2552 {
2553
2554         param_field[0] = _ascebc['P'];
2555         param_field[1] = _ascebc['C'];
2556         param_field[2] = _ascebc['I'];
2557         param_field[3] = _ascebc['T'];
2558         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2559         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2560         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2561 }
2562
2563 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2564                 char *param_field)
2565 {
2566         param_field[16] = _ascebc['B'];
2567         param_field[17] = _ascebc['L'];
2568         param_field[18] = _ascebc['K'];
2569         param_field[19] = _ascebc['T'];
2570         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2571         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2572         *((unsigned int *) (&param_field[28])) =
2573                 card->info.blkt.inter_packet_jumbo;
2574 }
2575
2576 static int qeth_qdio_activate(struct qeth_card *card)
2577 {
2578         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2579         return qdio_activate(CARD_DDEV(card));
2580 }
2581
2582 static int qeth_dm_act(struct qeth_card *card)
2583 {
2584         int rc;
2585         struct qeth_cmd_buffer *iob;
2586
2587         QETH_DBF_TEXT(SETUP, 2, "dmact");
2588
2589         iob = qeth_wait_for_buffer(&card->write);
2590         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2591
2592         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2593                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2594         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2595                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2596         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2597         return rc;
2598 }
2599
2600 static int qeth_mpc_initialize(struct qeth_card *card)
2601 {
2602         int rc;
2603
2604         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2605
2606         rc = qeth_issue_next_read(card);
2607         if (rc) {
2608                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2609                 return rc;
2610         }
2611         rc = qeth_cm_enable(card);
2612         if (rc) {
2613                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2614                 goto out_qdio;
2615         }
2616         rc = qeth_cm_setup(card);
2617         if (rc) {
2618                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2619                 goto out_qdio;
2620         }
2621         rc = qeth_ulp_enable(card);
2622         if (rc) {
2623                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2624                 goto out_qdio;
2625         }
2626         rc = qeth_ulp_setup(card);
2627         if (rc) {
2628                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2629                 goto out_qdio;
2630         }
2631         rc = qeth_alloc_qdio_buffers(card);
2632         if (rc) {
2633                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2634                 goto out_qdio;
2635         }
2636         rc = qeth_qdio_establish(card);
2637         if (rc) {
2638                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2639                 qeth_free_qdio_buffers(card);
2640                 goto out_qdio;
2641         }
2642         rc = qeth_qdio_activate(card);
2643         if (rc) {
2644                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2645                 goto out_qdio;
2646         }
2647         rc = qeth_dm_act(card);
2648         if (rc) {
2649                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2650                 goto out_qdio;
2651         }
2652
2653         return 0;
2654 out_qdio:
2655         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2656         qdio_free(CARD_DDEV(card));
2657         return rc;
2658 }
2659
2660 void qeth_print_status_message(struct qeth_card *card)
2661 {
2662         switch (card->info.type) {
2663         case QETH_CARD_TYPE_OSD:
2664         case QETH_CARD_TYPE_OSM:
2665         case QETH_CARD_TYPE_OSX:
2666                 /* VM will use a non-zero first character
2667                  * to indicate a HiperSockets like reporting
2668                  * of the level OSA sets the first character to zero
2669                  * */
2670                 if (!card->info.mcl_level[0]) {
2671                         sprintf(card->info.mcl_level, "%02x%02x",
2672                                 card->info.mcl_level[2],
2673                                 card->info.mcl_level[3]);
2674                         break;
2675                 }
2676                 /* fallthrough */
2677         case QETH_CARD_TYPE_IQD:
2678                 if ((card->info.guestlan) ||
2679                     (card->info.mcl_level[0] & 0x80)) {
2680                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2681                                 card->info.mcl_level[0]];
2682                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2683                                 card->info.mcl_level[1]];
2684                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2685                                 card->info.mcl_level[2]];
2686                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2687                                 card->info.mcl_level[3]];
2688                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2689                 }
2690                 break;
2691         default:
2692                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2693         }
2694         dev_info(&card->gdev->dev,
2695                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2696                  qeth_get_cardname(card),
2697                  (card->info.mcl_level[0]) ? " (level: " : "",
2698                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2699                  (card->info.mcl_level[0]) ? ")" : "",
2700                  qeth_get_cardname_short(card));
2701 }
2702 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2703
2704 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2705 {
2706         struct qeth_buffer_pool_entry *entry;
2707
2708         QETH_CARD_TEXT(card, 5, "inwrklst");
2709
2710         list_for_each_entry(entry,
2711                             &card->qdio.init_pool.entry_list, init_list) {
2712                 qeth_put_buffer_pool_entry(card, entry);
2713         }
2714 }
2715
2716 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2717                                         struct qeth_card *card)
2718 {
2719         struct list_head *plh;
2720         struct qeth_buffer_pool_entry *entry;
2721         int i, free;
2722         struct page *page;
2723
2724         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2725                 return NULL;
2726
2727         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2728                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2729                 free = 1;
2730                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2731                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2732                                 free = 0;
2733                                 break;
2734                         }
2735                 }
2736                 if (free) {
2737                         list_del_init(&entry->list);
2738                         return entry;
2739                 }
2740         }
2741
2742         /* no free buffer in pool so take first one and swap pages */
2743         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2744                         struct qeth_buffer_pool_entry, list);
2745         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2746                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2747                         page = alloc_page(GFP_ATOMIC);
2748                         if (!page) {
2749                                 return NULL;
2750                         } else {
2751                                 free_page((unsigned long)entry->elements[i]);
2752                                 entry->elements[i] = page_address(page);
2753                                 if (card->options.performance_stats)
2754                                         card->perf_stats.sg_alloc_page_rx++;
2755                         }
2756                 }
2757         }
2758         list_del_init(&entry->list);
2759         return entry;
2760 }
2761
2762 static int qeth_init_input_buffer(struct qeth_card *card,
2763                 struct qeth_qdio_buffer *buf)
2764 {
2765         struct qeth_buffer_pool_entry *pool_entry;
2766         int i;
2767
2768         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2769                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2770                 if (!buf->rx_skb)
2771                         return 1;
2772         }
2773
2774         pool_entry = qeth_find_free_buffer_pool_entry(card);
2775         if (!pool_entry)
2776                 return 1;
2777
2778         /*
2779          * since the buffer is accessed only from the input_tasklet
2780          * there shouldn't be a need to synchronize; also, since we use
2781          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2782          * buffers
2783          */
2784
2785         buf->pool_entry = pool_entry;
2786         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2787                 buf->buffer->element[i].length = PAGE_SIZE;
2788                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2789                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2790                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2791                 else
2792                         buf->buffer->element[i].eflags = 0;
2793                 buf->buffer->element[i].sflags = 0;
2794         }
2795         return 0;
2796 }
2797
2798 int qeth_init_qdio_queues(struct qeth_card *card)
2799 {
2800         int i, j;
2801         int rc;
2802
2803         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2804
2805         /* inbound queue */
2806         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2807                            QDIO_MAX_BUFFERS_PER_Q);
2808         qeth_initialize_working_pool_list(card);
2809         /*give only as many buffers to hardware as we have buffer pool entries*/
2810         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2811                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2812         card->qdio.in_q->next_buf_to_init =
2813                 card->qdio.in_buf_pool.buf_count - 1;
2814         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2815                      card->qdio.in_buf_pool.buf_count - 1);
2816         if (rc) {
2817                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2818                 return rc;
2819         }
2820
2821         /* completion */
2822         rc = qeth_cq_init(card);
2823         if (rc) {
2824                 return rc;
2825         }
2826
2827         /* outbound queue */
2828         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2829                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2830                                    QDIO_MAX_BUFFERS_PER_Q);
2831                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2832                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2833                                         card->qdio.out_qs[i]->bufs[j],
2834                                         QETH_QDIO_BUF_EMPTY);
2835                 }
2836                 card->qdio.out_qs[i]->card = card;
2837                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2838                 card->qdio.out_qs[i]->do_pack = 0;
2839                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2840                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2841                 atomic_set(&card->qdio.out_qs[i]->state,
2842                            QETH_OUT_Q_UNLOCKED);
2843         }
2844         return 0;
2845 }
2846 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2847
2848 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2849 {
2850         switch (link_type) {
2851         case QETH_LINK_TYPE_HSTR:
2852                 return 2;
2853         default:
2854                 return 1;
2855         }
2856 }
2857
2858 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2859                 struct qeth_ipa_cmd *cmd, __u8 command,
2860                 enum qeth_prot_versions prot)
2861 {
2862         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2863         cmd->hdr.command = command;
2864         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2865         cmd->hdr.seqno = card->seqno.ipa;
2866         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2867         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2868         if (card->options.layer2)
2869                 cmd->hdr.prim_version_no = 2;
2870         else
2871                 cmd->hdr.prim_version_no = 1;
2872         cmd->hdr.param_count = 1;
2873         cmd->hdr.prot_version = prot;
2874         cmd->hdr.ipa_supported = 0;
2875         cmd->hdr.ipa_enabled = 0;
2876 }
2877
2878 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2879                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2880 {
2881         struct qeth_cmd_buffer *iob;
2882         struct qeth_ipa_cmd *cmd;
2883
2884         iob = qeth_get_buffer(&card->write);
2885         if (iob) {
2886                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2887                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2888         } else {
2889                 dev_warn(&card->gdev->dev,
2890                          "The qeth driver ran out of channel command buffers\n");
2891                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2892                                  dev_name(&card->gdev->dev));
2893         }
2894
2895         return iob;
2896 }
2897 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2898
2899 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2900                 char prot_type)
2901 {
2902         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2903         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2904         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2905                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2906 }
2907 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2908
2909 /**
2910  * qeth_send_ipa_cmd() - send an IPA command
2911  *
2912  * See qeth_send_control_data() for explanation of the arguments.
2913  */
2914
2915 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2916                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2917                         unsigned long),
2918                 void *reply_param)
2919 {
2920         int rc;
2921         char prot_type;
2922
2923         QETH_CARD_TEXT(card, 4, "sendipa");
2924
2925         if (card->options.layer2)
2926                 if (card->info.type == QETH_CARD_TYPE_OSN)
2927                         prot_type = QETH_PROT_OSN2;
2928                 else
2929                         prot_type = QETH_PROT_LAYER2;
2930         else
2931                 prot_type = QETH_PROT_TCPIP;
2932         qeth_prepare_ipa_cmd(card, iob, prot_type);
2933         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2934                                                 iob, reply_cb, reply_param);
2935         if (rc == -ETIME) {
2936                 qeth_clear_ipacmd_list(card);
2937                 qeth_schedule_recovery(card);
2938         }
2939         return rc;
2940 }
2941 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2942
2943 static int qeth_send_startlan(struct qeth_card *card)
2944 {
2945         int rc;
2946         struct qeth_cmd_buffer *iob;
2947
2948         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2949
2950         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2951         if (!iob)
2952                 return -ENOMEM;
2953         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2954         return rc;
2955 }
2956
2957 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2958                 struct qeth_reply *reply, unsigned long data)
2959 {
2960         struct qeth_ipa_cmd *cmd;
2961
2962         QETH_CARD_TEXT(card, 4, "defadpcb");
2963
2964         cmd = (struct qeth_ipa_cmd *) data;
2965         if (cmd->hdr.return_code == 0)
2966                 cmd->hdr.return_code =
2967                         cmd->data.setadapterparms.hdr.return_code;
2968         return 0;
2969 }
2970
2971 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2972                 struct qeth_reply *reply, unsigned long data)
2973 {
2974         struct qeth_ipa_cmd *cmd;
2975
2976         QETH_CARD_TEXT(card, 3, "quyadpcb");
2977
2978         cmd = (struct qeth_ipa_cmd *) data;
2979         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2980                 card->info.link_type =
2981                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2982                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2983         }
2984         card->options.adp.supported_funcs =
2985                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2986         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2987 }
2988
2989 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2990                 __u32 command, __u32 cmdlen)
2991 {
2992         struct qeth_cmd_buffer *iob;
2993         struct qeth_ipa_cmd *cmd;
2994
2995         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2996                                      QETH_PROT_IPV4);
2997         if (iob) {
2998                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2999                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3000                 cmd->data.setadapterparms.hdr.command_code = command;
3001                 cmd->data.setadapterparms.hdr.used_total = 1;
3002                 cmd->data.setadapterparms.hdr.seq_no = 1;
3003         }
3004
3005         return iob;
3006 }
3007
3008 int qeth_query_setadapterparms(struct qeth_card *card)
3009 {
3010         int rc;
3011         struct qeth_cmd_buffer *iob;
3012
3013         QETH_CARD_TEXT(card, 3, "queryadp");
3014         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3015                                    sizeof(struct qeth_ipacmd_setadpparms));
3016         if (!iob)
3017                 return -ENOMEM;
3018         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3019         return rc;
3020 }
3021 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3022
3023 static int qeth_query_ipassists_cb(struct qeth_card *card,
3024                 struct qeth_reply *reply, unsigned long data)
3025 {
3026         struct qeth_ipa_cmd *cmd;
3027
3028         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3029
3030         cmd = (struct qeth_ipa_cmd *) data;
3031
3032         switch (cmd->hdr.return_code) {
3033         case IPA_RC_NOTSUPP:
3034         case IPA_RC_L2_UNSUPPORTED_CMD:
3035                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3036                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3037                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3038                 return -0;
3039         default:
3040                 if (cmd->hdr.return_code) {
3041                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3042                                                 "rc=%d\n",
3043                                                 dev_name(&card->gdev->dev),
3044                                                 cmd->hdr.return_code);
3045                         return 0;
3046                 }
3047         }
3048
3049         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3050                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3051                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3052         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3053                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3054                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3055         } else
3056                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3057                                         "\n", dev_name(&card->gdev->dev));
3058         return 0;
3059 }
3060
3061 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3062 {
3063         int rc;
3064         struct qeth_cmd_buffer *iob;
3065
3066         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3067         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3068         if (!iob)
3069                 return -ENOMEM;
3070         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3071         return rc;
3072 }
3073 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3074
3075 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3076                                 struct qeth_reply *reply, unsigned long data)
3077 {
3078         struct qeth_ipa_cmd *cmd;
3079         struct qeth_switch_info *sw_info;
3080         struct qeth_query_switch_attributes *attrs;
3081
3082         QETH_CARD_TEXT(card, 2, "qswiatcb");
3083         cmd = (struct qeth_ipa_cmd *) data;
3084         sw_info = (struct qeth_switch_info *)reply->param;
3085         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3086                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3087                 sw_info->capabilities = attrs->capabilities;
3088                 sw_info->settings = attrs->settings;
3089                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3090                                                         sw_info->settings);
3091         }
3092         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3093
3094         return 0;
3095 }
3096
3097 int qeth_query_switch_attributes(struct qeth_card *card,
3098                                  struct qeth_switch_info *sw_info)
3099 {
3100         struct qeth_cmd_buffer *iob;
3101
3102         QETH_CARD_TEXT(card, 2, "qswiattr");
3103         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3104                 return -EOPNOTSUPP;
3105         if (!netif_carrier_ok(card->dev))
3106                 return -ENOMEDIUM;
3107         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3108                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3109         if (!iob)
3110                 return -ENOMEM;
3111         return qeth_send_ipa_cmd(card, iob,
3112                                 qeth_query_switch_attributes_cb, sw_info);
3113 }
3114 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3115
3116 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3117                 struct qeth_reply *reply, unsigned long data)
3118 {
3119         struct qeth_ipa_cmd *cmd;
3120         __u16 rc;
3121
3122         cmd = (struct qeth_ipa_cmd *)data;
3123         rc = cmd->hdr.return_code;
3124         if (rc)
3125                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3126         else
3127                 card->info.diagass_support = cmd->data.diagass.ext;
3128         return 0;
3129 }
3130
3131 static int qeth_query_setdiagass(struct qeth_card *card)
3132 {
3133         struct qeth_cmd_buffer *iob;
3134         struct qeth_ipa_cmd    *cmd;
3135
3136         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3137         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3138         if (!iob)
3139                 return -ENOMEM;
3140         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3141         cmd->data.diagass.subcmd_len = 16;
3142         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3143         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3144 }
3145
3146 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3147 {
3148         unsigned long info = get_zeroed_page(GFP_KERNEL);
3149         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3150         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3151         struct ccw_dev_id ccwid;
3152         int level;
3153
3154         tid->chpid = card->info.chpid;
3155         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3156         tid->ssid = ccwid.ssid;
3157         tid->devno = ccwid.devno;
3158         if (!info)
3159                 return;
3160         level = stsi(NULL, 0, 0, 0);
3161         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3162                 tid->lparnr = info222->lpar_number;
3163         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3164                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3165                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3166         }
3167         free_page(info);
3168         return;
3169 }
3170
3171 static int qeth_hw_trap_cb(struct qeth_card *card,
3172                 struct qeth_reply *reply, unsigned long data)
3173 {
3174         struct qeth_ipa_cmd *cmd;
3175         __u16 rc;
3176
3177         cmd = (struct qeth_ipa_cmd *)data;
3178         rc = cmd->hdr.return_code;
3179         if (rc)
3180                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3181         return 0;
3182 }
3183
3184 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3185 {
3186         struct qeth_cmd_buffer *iob;
3187         struct qeth_ipa_cmd *cmd;
3188
3189         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3190         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3191         if (!iob)
3192                 return -ENOMEM;
3193         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3194         cmd->data.diagass.subcmd_len = 80;
3195         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3196         cmd->data.diagass.type = 1;
3197         cmd->data.diagass.action = action;
3198         switch (action) {
3199         case QETH_DIAGS_TRAP_ARM:
3200                 cmd->data.diagass.options = 0x0003;
3201                 cmd->data.diagass.ext = 0x00010000 +
3202                         sizeof(struct qeth_trap_id);
3203                 qeth_get_trap_id(card,
3204                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3205                 break;
3206         case QETH_DIAGS_TRAP_DISARM:
3207                 cmd->data.diagass.options = 0x0001;
3208                 break;
3209         case QETH_DIAGS_TRAP_CAPTURE:
3210                 break;
3211         }
3212         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3213 }
3214 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3215
3216 static int qeth_check_qdio_errors(struct qeth_card *card,
3217                                   struct qdio_buffer *buf,
3218                                   unsigned int qdio_error,
3219                                   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
3237 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3238 {
3239         struct qeth_qdio_q *queue = card->qdio.in_q;
3240         struct list_head *lh;
3241         int count;
3242         int i;
3243         int rc;
3244         int newcount = 0;
3245
3246         count = (index < queue->next_buf_to_init)?
3247                 card->qdio.in_buf_pool.buf_count -
3248                 (queue->next_buf_to_init - index) :
3249                 card->qdio.in_buf_pool.buf_count -
3250                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3251         /* only requeue at a certain threshold to avoid SIGAs */
3252         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3253                 for (i = queue->next_buf_to_init;
3254                      i < queue->next_buf_to_init + count; ++i) {
3255                         if (qeth_init_input_buffer(card,
3256                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3257                                 break;
3258                         } else {
3259                                 newcount++;
3260                         }
3261                 }
3262
3263                 if (newcount < count) {
3264                         /* we are in memory shortage so we switch back to
3265                            traditional skb allocation and drop packages */
3266                         atomic_set(&card->force_alloc_skb, 3);
3267                         count = newcount;
3268                 } else {
3269                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3270                 }
3271
3272                 if (!count) {
3273                         i = 0;
3274                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3275                                 i++;
3276                         if (i == card->qdio.in_buf_pool.buf_count) {
3277                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3278                                 card->reclaim_index = index;
3279                                 schedule_delayed_work(
3280                                         &card->buffer_reclaim_work,
3281                                         QETH_RECLAIM_WORK_TIME);
3282                         }
3283                         return;
3284                 }
3285
3286                 /*
3287                  * according to old code it should be avoided to requeue all
3288                  * 128 buffers in order to benefit from PCI avoidance.
3289                  * this function keeps at least one buffer (the buffer at
3290                  * 'index') un-requeued -> this buffer is the first buffer that
3291                  * will be requeued the next time
3292                  */
3293                 if (card->options.performance_stats) {
3294                         card->perf_stats.inbound_do_qdio_cnt++;
3295                         card->perf_stats.inbound_do_qdio_start_time =
3296                                 qeth_get_micros();
3297                 }
3298                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3299                              queue->next_buf_to_init, count);
3300                 if (card->options.performance_stats)
3301                         card->perf_stats.inbound_do_qdio_time +=
3302                                 qeth_get_micros() -
3303                                 card->perf_stats.inbound_do_qdio_start_time;
3304                 if (rc) {
3305                         QETH_CARD_TEXT(card, 2, "qinberr");
3306                 }
3307                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3308                                           QDIO_MAX_BUFFERS_PER_Q;
3309         }
3310 }
3311
3312 static void qeth_buffer_reclaim_work(struct work_struct *work)
3313 {
3314         struct qeth_card *card = container_of(work, struct qeth_card,
3315                 buffer_reclaim_work.work);
3316
3317         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3318         qeth_queue_input_buffer(card, card->reclaim_index);
3319 }
3320
3321 static void qeth_handle_send_error(struct qeth_card *card,
3322                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3323 {
3324         int sbalf15 = buffer->buffer->element[15].sflags;
3325
3326         QETH_CARD_TEXT(card, 6, "hdsnderr");
3327         if (card->info.type == QETH_CARD_TYPE_IQD) {
3328                 if (sbalf15 == 0) {
3329                         qdio_err = 0;
3330                 } else {
3331                         qdio_err = 1;
3332                 }
3333         }
3334         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3335
3336         if (!qdio_err)
3337                 return;
3338
3339         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3340                 return;
3341
3342         QETH_CARD_TEXT(card, 1, "lnkfail");
3343         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3344                        (u16)qdio_err, (u8)sbalf15);
3345 }
3346
3347 /**
3348  * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3349  * @queue: queue to check for packing buffer
3350  *
3351  * Returns number of buffers that were prepared for flush.
3352  */
3353 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3354 {
3355         struct qeth_qdio_out_buffer *buffer;
3356
3357         buffer = queue->bufs[queue->next_buf_to_fill];
3358         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3359             (buffer->next_element_to_fill > 0)) {
3360                 /* it's a packing buffer */
3361                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3362                 queue->next_buf_to_fill =
3363                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3364                 return 1;
3365         }
3366         return 0;
3367 }
3368
3369 /*
3370  * Switched to packing state if the number of used buffers on a queue
3371  * reaches a certain limit.
3372  */
3373 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3374 {
3375         if (!queue->do_pack) {
3376                 if (atomic_read(&queue->used_buffers)
3377                     >= QETH_HIGH_WATERMARK_PACK){
3378                         /* switch non-PACKING -> PACKING */
3379                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3380                         if (queue->card->options.performance_stats)
3381                                 queue->card->perf_stats.sc_dp_p++;
3382                         queue->do_pack = 1;
3383                 }
3384         }
3385 }
3386
3387 /*
3388  * Switches from packing to non-packing mode. If there is a packing
3389  * buffer on the queue this buffer will be prepared to be flushed.
3390  * In that case 1 is returned to inform the caller. If no buffer
3391  * has to be flushed, zero is returned.
3392  */
3393 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3394 {
3395         if (queue->do_pack) {
3396                 if (atomic_read(&queue->used_buffers)
3397                     <= QETH_LOW_WATERMARK_PACK) {
3398                         /* switch PACKING -> non-PACKING */
3399                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3400                         if (queue->card->options.performance_stats)
3401                                 queue->card->perf_stats.sc_p_dp++;
3402                         queue->do_pack = 0;
3403                         return qeth_prep_flush_pack_buffer(queue);
3404                 }
3405         }
3406         return 0;
3407 }
3408
3409 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3410                                int count)
3411 {
3412         struct qeth_qdio_out_buffer *buf;
3413         int rc;
3414         int i;
3415         unsigned int qdio_flags;
3416
3417         for (i = index; i < index + count; ++i) {
3418                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3419                 buf = queue->bufs[bidx];
3420                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3421                                 SBAL_EFLAGS_LAST_ENTRY;
3422
3423                 if (queue->bufstates)
3424                         queue->bufstates[bidx].user = buf;
3425
3426                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3427                         continue;
3428
3429                 if (!queue->do_pack) {
3430                         if ((atomic_read(&queue->used_buffers) >=
3431                                 (QETH_HIGH_WATERMARK_PACK -
3432                                  QETH_WATERMARK_PACK_FUZZ)) &&
3433                             !atomic_read(&queue->set_pci_flags_count)) {
3434                                 /* it's likely that we'll go to packing
3435                                  * mode soon */
3436                                 atomic_inc(&queue->set_pci_flags_count);
3437                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3438                         }
3439                 } else {
3440                         if (!atomic_read(&queue->set_pci_flags_count)) {
3441                                 /*
3442                                  * there's no outstanding PCI any more, so we
3443                                  * have to request a PCI to be sure the the PCI
3444                                  * will wake at some time in the future then we
3445                                  * can flush packed buffers that might still be
3446                                  * hanging around, which can happen if no
3447                                  * further send was requested by the stack
3448                                  */
3449                                 atomic_inc(&queue->set_pci_flags_count);
3450                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3451                         }
3452                 }
3453         }
3454
3455         netif_trans_update(queue->card->dev);
3456         if (queue->card->options.performance_stats) {
3457                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3458                 queue->card->perf_stats.outbound_do_qdio_start_time =
3459                         qeth_get_micros();
3460         }
3461         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3462         if (atomic_read(&queue->set_pci_flags_count))
3463                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3464         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3465                      queue->queue_no, index, count);
3466         if (queue->card->options.performance_stats)
3467                 queue->card->perf_stats.outbound_do_qdio_time +=
3468                         qeth_get_micros() -
3469                         queue->card->perf_stats.outbound_do_qdio_start_time;
3470         atomic_add(count, &queue->used_buffers);
3471         if (rc) {
3472                 queue->card->stats.tx_errors += count;
3473                 /* ignore temporary SIGA errors without busy condition */
3474                 if (rc == -ENOBUFS)
3475                         return;
3476                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3477                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3478                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3479                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3480                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3481
3482                 /* this must not happen under normal circumstances. if it
3483                  * happens something is really wrong -> recover */
3484                 qeth_schedule_recovery(queue->card);
3485                 return;
3486         }
3487         if (queue->card->options.performance_stats)
3488                 queue->card->perf_stats.bufs_sent += count;
3489 }
3490
3491 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3492 {
3493         int index;
3494         int flush_cnt = 0;
3495         int q_was_packing = 0;
3496
3497         /*
3498          * check if weed have to switch to non-packing mode or if
3499          * we have to get a pci flag out on the queue
3500          */
3501         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3502             !atomic_read(&queue->set_pci_flags_count)) {
3503                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3504                                 QETH_OUT_Q_UNLOCKED) {
3505                         /*
3506                          * If we get in here, there was no action in
3507                          * do_send_packet. So, we check if there is a
3508                          * packing buffer to be flushed here.
3509                          */
3510                         netif_stop_queue(queue->card->dev);
3511                         index = queue->next_buf_to_fill;
3512                         q_was_packing = queue->do_pack;
3513                         /* queue->do_pack may change */
3514                         barrier();
3515                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3516                         if (!flush_cnt &&
3517                             !atomic_read(&queue->set_pci_flags_count))
3518                                 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3519                         if (queue->card->options.performance_stats &&
3520                             q_was_packing)
3521                                 queue->card->perf_stats.bufs_sent_pack +=
3522                                         flush_cnt;
3523                         if (flush_cnt)
3524                                 qeth_flush_buffers(queue, index, flush_cnt);
3525                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3526                 }
3527         }
3528 }
3529
3530 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3531                 unsigned long card_ptr)
3532 {
3533         struct qeth_card *card = (struct qeth_card *)card_ptr;
3534
3535         if (card->dev && (card->dev->flags & IFF_UP))
3536                 napi_schedule(&card->napi);
3537 }
3538 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3539
3540 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3541 {
3542         int rc;
3543
3544         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3545                 rc = -1;
3546                 goto out;
3547         } else {
3548                 if (card->options.cq == cq) {
3549                         rc = 0;
3550                         goto out;
3551                 }
3552
3553                 if (card->state != CARD_STATE_DOWN &&
3554                     card->state != CARD_STATE_RECOVER) {
3555                         rc = -1;
3556                         goto out;
3557                 }
3558
3559                 qeth_free_qdio_buffers(card);
3560                 card->options.cq = cq;
3561                 rc = 0;
3562         }
3563 out:
3564         return rc;
3565
3566 }
3567 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3568
3569
3570 static void qeth_qdio_cq_handler(struct qeth_card *card,
3571                 unsigned int qdio_err,
3572                 unsigned int queue, int first_element, int count) {
3573         struct qeth_qdio_q *cq = card->qdio.c_q;
3574         int i;
3575         int rc;
3576
3577         if (!qeth_is_cq(card, queue))
3578                 goto out;
3579
3580         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3581         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3582         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3583
3584         if (qdio_err) {
3585                 netif_stop_queue(card->dev);
3586                 qeth_schedule_recovery(card);
3587                 goto out;
3588         }
3589
3590         if (card->options.performance_stats) {
3591                 card->perf_stats.cq_cnt++;
3592                 card->perf_stats.cq_start_time = qeth_get_micros();
3593         }
3594
3595         for (i = first_element; i < first_element + count; ++i) {
3596                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3597                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3598                 int e;
3599
3600                 e = 0;
3601                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3602                        buffer->element[e].addr) {
3603                         unsigned long phys_aob_addr;
3604
3605                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3606                         qeth_qdio_handle_aob(card, phys_aob_addr);
3607                         buffer->element[e].addr = NULL;
3608                         buffer->element[e].eflags = 0;
3609                         buffer->element[e].sflags = 0;
3610                         buffer->element[e].length = 0;
3611
3612                         ++e;
3613                 }
3614
3615                 buffer->element[15].eflags = 0;
3616                 buffer->element[15].sflags = 0;
3617         }
3618         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3619                     card->qdio.c_q->next_buf_to_init,
3620                     count);
3621         if (rc) {
3622                 dev_warn(&card->gdev->dev,
3623                         "QDIO reported an error, rc=%i\n", rc);
3624                 QETH_CARD_TEXT(card, 2, "qcqherr");
3625         }
3626         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3627                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3628
3629         netif_wake_queue(card->dev);
3630
3631         if (card->options.performance_stats) {
3632                 int delta_t = qeth_get_micros();
3633                 delta_t -= card->perf_stats.cq_start_time;
3634                 card->perf_stats.cq_time += delta_t;
3635         }
3636 out:
3637         return;
3638 }
3639
3640 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3641                 unsigned int queue, int first_elem, int count,
3642                 unsigned long card_ptr)
3643 {
3644         struct qeth_card *card = (struct qeth_card *)card_ptr;
3645
3646         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3647         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3648
3649         if (qeth_is_cq(card, queue))
3650                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3651         else if (qdio_err)
3652                 qeth_schedule_recovery(card);
3653
3654
3655 }
3656 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3657
3658 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3659                 unsigned int qdio_error, int __queue, int first_element,
3660                 int count, unsigned long card_ptr)
3661 {
3662         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3663         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3664         struct qeth_qdio_out_buffer *buffer;
3665         int i;
3666
3667         QETH_CARD_TEXT(card, 6, "qdouhdl");
3668         if (qdio_error & QDIO_ERROR_FATAL) {
3669                 QETH_CARD_TEXT(card, 2, "achkcond");
3670                 netif_stop_queue(card->dev);
3671                 qeth_schedule_recovery(card);
3672                 return;
3673         }
3674         if (card->options.performance_stats) {
3675                 card->perf_stats.outbound_handler_cnt++;
3676                 card->perf_stats.outbound_handler_start_time =
3677                         qeth_get_micros();
3678         }
3679         for (i = first_element; i < (first_element + count); ++i) {
3680                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3681                 buffer = queue->bufs[bidx];
3682                 qeth_handle_send_error(card, buffer, qdio_error);
3683
3684                 if (queue->bufstates &&
3685                     (queue->bufstates[bidx].flags &
3686                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3687                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3688
3689                         if (atomic_cmpxchg(&buffer->state,
3690                                            QETH_QDIO_BUF_PRIMED,
3691                                            QETH_QDIO_BUF_PENDING) ==
3692                                 QETH_QDIO_BUF_PRIMED) {
3693                                 qeth_notify_skbs(queue, buffer,
3694                                                  TX_NOTIFY_PENDING);
3695                         }
3696                         buffer->aob = queue->bufstates[bidx].aob;
3697                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3698                         QETH_CARD_TEXT(queue->card, 5, "aob");
3699                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3700                                         virt_to_phys(buffer->aob));
3701                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3702                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3703                                 qeth_schedule_recovery(card);
3704                         }
3705                 } else {
3706                         if (card->options.cq == QETH_CQ_ENABLED) {
3707                                 enum iucv_tx_notify n;
3708
3709                                 n = qeth_compute_cq_notification(
3710                                         buffer->buffer->element[15].sflags, 0);
3711                                 qeth_notify_skbs(queue, buffer, n);
3712                         }
3713
3714                         qeth_clear_output_buffer(queue, buffer,
3715                                                 QETH_QDIO_BUF_EMPTY);
3716                 }
3717                 qeth_cleanup_handled_pending(queue, bidx, 0);
3718         }
3719         atomic_sub(count, &queue->used_buffers);
3720         /* check if we need to do something on this outbound queue */
3721         if (card->info.type != QETH_CARD_TYPE_IQD)
3722                 qeth_check_outbound_queue(queue);
3723
3724         netif_wake_queue(queue->card->dev);
3725         if (card->options.performance_stats)
3726                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3727                         card->perf_stats.outbound_handler_start_time;
3728 }
3729 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3730
3731 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3732 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3733 {
3734         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3735                 return 2;
3736         return queue_num;
3737 }
3738
3739 /**
3740  * Note: Function assumes that we have 4 outbound queues.
3741  */
3742 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3743                         int ipv, int cast_type)
3744 {
3745         __be16 *tci;
3746         u8 tos;
3747
3748         if (cast_type && card->info.is_multicast_different)
3749                 return card->info.is_multicast_different &
3750                         (card->qdio.no_out_queues - 1);
3751
3752         switch (card->qdio.do_prio_queueing) {
3753         case QETH_PRIO_Q_ING_TOS:
3754         case QETH_PRIO_Q_ING_PREC:
3755                 switch (ipv) {
3756                 case 4:
3757                         tos = ipv4_get_dsfield(ip_hdr(skb));
3758                         break;
3759                 case 6:
3760                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3761                         break;
3762                 default:
3763                         return card->qdio.default_out_queue;
3764                 }
3765                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3766                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3767                 if (tos & IPTOS_MINCOST)
3768                         return qeth_cut_iqd_prio(card, 3);
3769                 if (tos & IPTOS_RELIABILITY)
3770                         return 2;
3771                 if (tos & IPTOS_THROUGHPUT)
3772                         return 1;
3773                 if (tos & IPTOS_LOWDELAY)
3774                         return 0;
3775                 break;
3776         case QETH_PRIO_Q_ING_SKB:
3777                 if (skb->priority > 5)
3778                         return 0;
3779                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3780         case QETH_PRIO_Q_ING_VLAN:
3781                 tci = &((struct ethhdr *)skb->data)->h_proto;
3782                 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3783                         return qeth_cut_iqd_prio(card,
3784                         ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3785                 break;
3786         default:
3787                 break;
3788         }
3789         return card->qdio.default_out_queue;
3790 }
3791 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3792
3793 /**
3794  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3795  * @skb:                                SKB address
3796  *
3797  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3798  * fragmented part of the SKB. Returns zero for linear SKB.
3799  */
3800 int qeth_get_elements_for_frags(struct sk_buff *skb)
3801 {
3802         int cnt, elements = 0;
3803
3804         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3805                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3806
3807                 elements += qeth_get_elements_for_range(
3808                         (addr_t)skb_frag_address(frag),
3809                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3810         }
3811         return elements;
3812 }
3813 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3814
3815 /**
3816  * qeth_get_elements_no() -     find number of SBALEs for skb data, inc. frags.
3817  * @card:                       qeth card structure, to check max. elems.
3818  * @skb:                        SKB address
3819  * @extra_elems:                extra elems needed, to check against max.
3820  * @data_offset:                range starts at skb->data + data_offset
3821  *
3822  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3823  * skb data, including linear part and fragments. Checks if the result plus
3824  * extra_elems fits under the limit for the card. Returns 0 if it does not.
3825  * Note: extra_elems is not included in the returned result.
3826  */
3827 int qeth_get_elements_no(struct qeth_card *card,
3828                      struct sk_buff *skb, int extra_elems, int data_offset)
3829 {
3830         int elements = qeth_get_elements_for_range(
3831                                 (addr_t)skb->data + data_offset,
3832                                 (addr_t)skb->data + skb_headlen(skb)) +
3833                         qeth_get_elements_for_frags(skb);
3834
3835         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3836                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3837                         "(Number=%d / Length=%d). Discarded.\n",
3838                         elements + extra_elems, skb->len);
3839                 return 0;
3840         }
3841         return elements;
3842 }
3843 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3844
3845 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3846 {
3847         int hroom, inpage, rest;
3848
3849         if (((unsigned long)skb->data & PAGE_MASK) !=
3850             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3851                 hroom = skb_headroom(skb);
3852                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3853                 rest = len - inpage;
3854                 if (rest > hroom)
3855                         return 1;
3856                 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3857                 skb->data -= rest;
3858                 skb->tail -= rest;
3859                 *hdr = (struct qeth_hdr *)skb->data;
3860                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3861         }
3862         return 0;
3863 }
3864 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3865
3866 /**
3867  * qeth_push_hdr() - push a qeth_hdr onto an skb.
3868  * @skb: skb that the qeth_hdr should be pushed onto.
3869  * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3870  *       it contains a valid pointer to a qeth_hdr.
3871  * @len: length of the hdr that needs to be pushed on.
3872  *
3873  * Returns the pushed length. If the header can't be pushed on
3874  * (eg. because it would cross a page boundary), it is allocated from
3875  * the cache instead and 0 is returned.
3876  * Error to create the hdr is indicated by returning with < 0.
3877  */
3878 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3879 {
3880         if (skb_headroom(skb) >= len &&
3881             qeth_get_elements_for_range((addr_t)skb->data - len,
3882                                         (addr_t)skb->data) == 1) {
3883                 *hdr = skb_push(skb, len);
3884                 return len;
3885         }
3886         /* fall back */
3887         *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3888         if (!*hdr)
3889                 return -ENOMEM;
3890         return 0;
3891 }
3892 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3893
3894 static void __qeth_fill_buffer(struct sk_buff *skb,
3895                                struct qeth_qdio_out_buffer *buf,
3896                                bool is_first_elem, unsigned int offset)
3897 {
3898         struct qdio_buffer *buffer = buf->buffer;
3899         int element = buf->next_element_to_fill;
3900         int length = skb_headlen(skb) - offset;
3901         char *data = skb->data + offset;
3902         int length_here, cnt;
3903
3904         /* map linear part into buffer element(s) */
3905         while (length > 0) {
3906                 /* length_here is the remaining amount of data in this page */
3907                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3908                 if (length < length_here)
3909                         length_here = length;
3910
3911                 buffer->element[element].addr = data;
3912                 buffer->element[element].length = length_here;
3913                 length -= length_here;
3914                 if (is_first_elem) {
3915                         is_first_elem = false;
3916                         if (length || skb_is_nonlinear(skb))
3917                                 /* skb needs additional elements */
3918                                 buffer->element[element].eflags =
3919                                         SBAL_EFLAGS_FIRST_FRAG;
3920                         else
3921                                 buffer->element[element].eflags = 0;
3922                 } else {
3923                         buffer->element[element].eflags =
3924                                 SBAL_EFLAGS_MIDDLE_FRAG;
3925                 }
3926                 data += length_here;
3927                 element++;
3928         }
3929
3930         /* map page frags into buffer element(s) */
3931         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3932                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3933
3934                 data = skb_frag_address(frag);
3935                 length = skb_frag_size(frag);
3936                 while (length > 0) {
3937                         length_here = PAGE_SIZE -
3938                                 ((unsigned long) data % PAGE_SIZE);
3939                         if (length < length_here)
3940                                 length_here = length;
3941
3942                         buffer->element[element].addr = data;
3943                         buffer->element[element].length = length_here;
3944                         buffer->element[element].eflags =
3945                                 SBAL_EFLAGS_MIDDLE_FRAG;
3946                         length -= length_here;
3947                         data += length_here;
3948                         element++;
3949                 }
3950         }
3951
3952         if (buffer->element[element - 1].eflags)
3953                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3954         buf->next_element_to_fill = element;
3955 }
3956
3957 /**
3958  * qeth_fill_buffer() - map skb into an output buffer
3959  * @queue:      QDIO queue to submit the buffer on
3960  * @buf:        buffer to transport the skb
3961  * @skb:        skb to map into the buffer
3962  * @hdr:        qeth_hdr for this skb. Either at skb->data, or allocated
3963  *              from qeth_core_header_cache.
3964  * @offset:     when mapping the skb, start at skb->data + offset
3965  * @hd_len:     if > 0, build a dedicated header element of this size
3966  */
3967 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3968                             struct qeth_qdio_out_buffer *buf,
3969                             struct sk_buff *skb, struct qeth_hdr *hdr,
3970                             unsigned int offset, unsigned int hd_len)
3971 {
3972         struct qdio_buffer *buffer = buf->buffer;
3973         bool is_first_elem = true;
3974         int flush_cnt = 0;
3975
3976         refcount_inc(&skb->users);
3977         skb_queue_tail(&buf->skb_list, skb);
3978
3979         /* build dedicated header element */
3980         if (hd_len) {
3981                 int element = buf->next_element_to_fill;
3982                 is_first_elem = false;
3983
3984                 buffer->element[element].addr = hdr;
3985                 buffer->element[element].length = hd_len;
3986                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3987                 /* remember to free cache-allocated qeth_hdr: */
3988                 buf->is_header[element] = ((void *)hdr != skb->data);
3989                 buf->next_element_to_fill++;
3990         }
3991
3992         __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3993
3994         if (!queue->do_pack) {
3995                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3996                 /* set state to PRIMED -> will be flushed */
3997                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3998                 flush_cnt = 1;
3999         } else {
4000                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4001                 if (queue->card->options.performance_stats)
4002                         queue->card->perf_stats.skbs_sent_pack++;
4003                 if (buf->next_element_to_fill >=
4004                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4005                         /*
4006                          * packed buffer if full -> set state PRIMED
4007                          * -> will be flushed
4008                          */
4009                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4010                         flush_cnt = 1;
4011                 }
4012         }
4013         return flush_cnt;
4014 }
4015
4016 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4017                              struct qeth_hdr *hdr, unsigned int offset,
4018                              unsigned int hd_len)
4019 {
4020         int index = queue->next_buf_to_fill;
4021         struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4022
4023         /*
4024          * check if buffer is empty to make sure that we do not 'overtake'
4025          * ourselves and try to fill a buffer that is already primed
4026          */
4027         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4028                 return -EBUSY;
4029         queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4030         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4031         qeth_flush_buffers(queue, index, 1);
4032         return 0;
4033 }
4034 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4035
4036 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4037                         struct sk_buff *skb, struct qeth_hdr *hdr,
4038                         unsigned int offset, unsigned int hd_len,
4039                         int elements_needed)
4040 {
4041         struct qeth_qdio_out_buffer *buffer;
4042         int start_index;
4043         int flush_count = 0;
4044         int do_pack = 0;
4045         int tmp;
4046         int rc = 0;
4047
4048         /* spin until we get the queue ... */
4049         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4050                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4051         start_index = queue->next_buf_to_fill;
4052         buffer = queue->bufs[queue->next_buf_to_fill];
4053         /*
4054          * check if buffer is empty to make sure that we do not 'overtake'
4055          * ourselves and try to fill a buffer that is already primed
4056          */
4057         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4058                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4059                 return -EBUSY;
4060         }
4061         /* check if we need to switch packing state of this queue */
4062         qeth_switch_to_packing_if_needed(queue);
4063         if (queue->do_pack) {
4064                 do_pack = 1;
4065                 /* does packet fit in current buffer? */
4066                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4067                     buffer->next_element_to_fill) < elements_needed) {
4068                         /* ... no -> set state PRIMED */
4069                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4070                         flush_count++;
4071                         queue->next_buf_to_fill =
4072                                 (queue->next_buf_to_fill + 1) %
4073                                 QDIO_MAX_BUFFERS_PER_Q;
4074                         buffer = queue->bufs[queue->next_buf_to_fill];
4075                         /* we did a step forward, so check buffer state
4076                          * again */
4077                         if (atomic_read(&buffer->state) !=
4078                             QETH_QDIO_BUF_EMPTY) {
4079                                 qeth_flush_buffers(queue, start_index,
4080                                                            flush_count);
4081                                 atomic_set(&queue->state,
4082                                                 QETH_OUT_Q_UNLOCKED);
4083                                 rc = -EBUSY;
4084                                 goto out;
4085                         }
4086                 }
4087         }
4088         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4089         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4090                                   QDIO_MAX_BUFFERS_PER_Q;
4091         flush_count += tmp;
4092         if (flush_count)
4093                 qeth_flush_buffers(queue, start_index, flush_count);
4094         else if (!atomic_read(&queue->set_pci_flags_count))
4095                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4096         /*
4097          * queue->state will go from LOCKED -> UNLOCKED or from
4098          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4099          * (switch packing state or flush buffer to get another pci flag out).
4100          * In that case we will enter this loop
4101          */
4102         while (atomic_dec_return(&queue->state)) {
4103                 start_index = queue->next_buf_to_fill;
4104                 /* check if we can go back to non-packing state */
4105                 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4106                 /*
4107                  * check if we need to flush a packing buffer to get a pci
4108                  * flag out on the queue
4109                  */
4110                 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4111                         tmp = qeth_prep_flush_pack_buffer(queue);
4112                 if (tmp) {
4113                         qeth_flush_buffers(queue, start_index, tmp);
4114                         flush_count += tmp;
4115                 }
4116         }
4117 out:
4118         /* at this point the queue is UNLOCKED again */
4119         if (queue->card->options.performance_stats && do_pack)
4120                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4121
4122         return rc;
4123 }
4124 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4125
4126 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4127                 struct qeth_reply *reply, unsigned long data)
4128 {
4129         struct qeth_ipa_cmd *cmd;
4130         struct qeth_ipacmd_setadpparms *setparms;
4131
4132         QETH_CARD_TEXT(card, 4, "prmadpcb");
4133
4134         cmd = (struct qeth_ipa_cmd *) data;
4135         setparms = &(cmd->data.setadapterparms);
4136
4137         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4138         if (cmd->hdr.return_code) {
4139                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4140                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4141         }
4142         card->info.promisc_mode = setparms->data.mode;
4143         return 0;
4144 }
4145
4146 void qeth_setadp_promisc_mode(struct qeth_card *card)
4147 {
4148         enum qeth_ipa_promisc_modes mode;
4149         struct net_device *dev = card->dev;
4150         struct qeth_cmd_buffer *iob;
4151         struct qeth_ipa_cmd *cmd;
4152
4153         QETH_CARD_TEXT(card, 4, "setprom");
4154
4155         if (((dev->flags & IFF_PROMISC) &&
4156              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4157             (!(dev->flags & IFF_PROMISC) &&
4158              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4159                 return;
4160         mode = SET_PROMISC_MODE_OFF;
4161         if (dev->flags & IFF_PROMISC)
4162                 mode = SET_PROMISC_MODE_ON;
4163         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4164
4165         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4166                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4167         if (!iob)
4168                 return;
4169         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4170         cmd->data.setadapterparms.data.mode = mode;
4171         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4172 }
4173 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4174
4175 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4176 {
4177         struct qeth_card *card;
4178         char dbf_text[15];
4179
4180         card = dev->ml_priv;
4181
4182         QETH_CARD_TEXT(card, 4, "chgmtu");
4183         sprintf(dbf_text, "%8x", new_mtu);
4184         QETH_CARD_TEXT(card, 4, dbf_text);
4185
4186         if (!qeth_mtu_is_valid(card, new_mtu))
4187                 return -EINVAL;
4188         dev->mtu = new_mtu;
4189         return 0;
4190 }
4191 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4192
4193 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4194 {
4195         struct qeth_card *card;
4196
4197         card = dev->ml_priv;
4198
4199         QETH_CARD_TEXT(card, 5, "getstat");
4200
4201         return &card->stats;
4202 }
4203 EXPORT_SYMBOL_GPL(qeth_get_stats);
4204
4205 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4206                 struct qeth_reply *reply, unsigned long data)
4207 {
4208         struct qeth_ipa_cmd *cmd;
4209
4210         QETH_CARD_TEXT(card, 4, "chgmaccb");
4211
4212         cmd = (struct qeth_ipa_cmd *) data;
4213         if (!card->options.layer2 ||
4214             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4215                 memcpy(card->dev->dev_addr,
4216                        &cmd->data.setadapterparms.data.change_addr.addr,
4217                        OSA_ADDR_LEN);
4218                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4219         }
4220         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4221         return 0;
4222 }
4223
4224 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4225 {
4226         int rc;
4227         struct qeth_cmd_buffer *iob;
4228         struct qeth_ipa_cmd *cmd;
4229
4230         QETH_CARD_TEXT(card, 4, "chgmac");
4231
4232         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4233                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4234                                    sizeof(struct qeth_change_addr));
4235         if (!iob)
4236                 return -ENOMEM;
4237         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4238         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4239         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4240         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4241                card->dev->dev_addr, OSA_ADDR_LEN);
4242         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4243                                NULL);
4244         return rc;
4245 }
4246 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4247
4248 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4249                 struct qeth_reply *reply, unsigned long data)
4250 {
4251         struct qeth_ipa_cmd *cmd;
4252         struct qeth_set_access_ctrl *access_ctrl_req;
4253         int fallback = *(int *)reply->param;
4254
4255         QETH_CARD_TEXT(card, 4, "setaccb");
4256
4257         cmd = (struct qeth_ipa_cmd *) data;
4258         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4259         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4260         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4261         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4262                 cmd->data.setadapterparms.hdr.return_code);
4263         if (cmd->data.setadapterparms.hdr.return_code !=
4264                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4265                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4266                                 card->gdev->dev.kobj.name,
4267                                 access_ctrl_req->subcmd_code,
4268                                 cmd->data.setadapterparms.hdr.return_code);
4269         switch (cmd->data.setadapterparms.hdr.return_code) {
4270         case SET_ACCESS_CTRL_RC_SUCCESS:
4271                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4272                         dev_info(&card->gdev->dev,
4273                             "QDIO data connection isolation is deactivated\n");
4274                 } else {
4275                         dev_info(&card->gdev->dev,
4276                             "QDIO data connection isolation is activated\n");
4277                 }
4278                 break;
4279         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4280                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4281                                 "deactivated\n", dev_name(&card->gdev->dev));
4282                 if (fallback)
4283                         card->options.isolation = card->options.prev_isolation;
4284                 break;
4285         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4286                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4287                                 " activated\n", dev_name(&card->gdev->dev));
4288                 if (fallback)
4289                         card->options.isolation = card->options.prev_isolation;
4290                 break;
4291         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4292                 dev_err(&card->gdev->dev, "Adapter does not "
4293                         "support QDIO data connection isolation\n");
4294                 break;
4295         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4296                 dev_err(&card->gdev->dev,
4297                         "Adapter is dedicated. "
4298                         "QDIO data connection isolation not supported\n");
4299                 if (fallback)
4300                         card->options.isolation = card->options.prev_isolation;
4301                 break;
4302         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4303                 dev_err(&card->gdev->dev,
4304                         "TSO does not permit QDIO data connection isolation\n");
4305                 if (fallback)
4306                         card->options.isolation = card->options.prev_isolation;
4307                 break;
4308         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4309                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4310                         "support reflective relay mode\n");
4311                 if (fallback)
4312                         card->options.isolation = card->options.prev_isolation;
4313                 break;
4314         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4315                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4316                                         "enabled at the adjacent switch port");
4317                 if (fallback)
4318                         card->options.isolation = card->options.prev_isolation;
4319                 break;
4320         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4321                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4322                                         "at the adjacent switch failed\n");
4323                 break;
4324         default:
4325                 /* this should never happen */
4326                 if (fallback)
4327                         card->options.isolation = card->options.prev_isolation;
4328                 break;
4329         }
4330         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4331         return 0;
4332 }
4333
4334 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4335                 enum qeth_ipa_isolation_modes isolation, int fallback)
4336 {
4337         int rc;
4338         struct qeth_cmd_buffer *iob;
4339         struct qeth_ipa_cmd *cmd;
4340         struct qeth_set_access_ctrl *access_ctrl_req;
4341
4342         QETH_CARD_TEXT(card, 4, "setacctl");
4343
4344         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4345         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4346
4347         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4348                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4349                                    sizeof(struct qeth_set_access_ctrl));
4350         if (!iob)
4351                 return -ENOMEM;
4352         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4353         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4354         access_ctrl_req->subcmd_code = isolation;
4355
4356         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4357                                &fallback);
4358         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4359         return rc;
4360 }
4361
4362 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4363 {
4364         int rc = 0;
4365
4366         QETH_CARD_TEXT(card, 4, "setactlo");
4367
4368         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4369              card->info.type == QETH_CARD_TYPE_OSX) &&
4370              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4371                 rc = qeth_setadpparms_set_access_ctrl(card,
4372                         card->options.isolation, fallback);
4373                 if (rc) {
4374                         QETH_DBF_MESSAGE(3,
4375                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4376                                 card->gdev->dev.kobj.name,
4377                                 rc);
4378                         rc = -EOPNOTSUPP;
4379                 }
4380         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4381                 card->options.isolation = ISOLATION_MODE_NONE;
4382
4383                 dev_err(&card->gdev->dev, "Adapter does not "
4384                         "support QDIO data connection isolation\n");
4385                 rc = -EOPNOTSUPP;
4386         }
4387         return rc;
4388 }
4389 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4390
4391 void qeth_tx_timeout(struct net_device *dev)
4392 {
4393         struct qeth_card *card;
4394
4395         card = dev->ml_priv;
4396         QETH_CARD_TEXT(card, 4, "txtimeo");
4397         card->stats.tx_errors++;
4398         qeth_schedule_recovery(card);
4399 }
4400 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4401
4402 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4403 {
4404         struct qeth_card *card = dev->ml_priv;
4405         int rc = 0;
4406
4407         switch (regnum) {
4408         case MII_BMCR: /* Basic mode control register */
4409                 rc = BMCR_FULLDPLX;
4410                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4411                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4412                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4413                         rc |= BMCR_SPEED100;
4414                 break;
4415         case MII_BMSR: /* Basic mode status register */
4416                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4417                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4418                      BMSR_100BASE4;
4419                 break;
4420         case MII_PHYSID1: /* PHYS ID 1 */
4421                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4422                      dev->dev_addr[2];
4423                 rc = (rc >> 5) & 0xFFFF;
4424                 break;
4425         case MII_PHYSID2: /* PHYS ID 2 */
4426                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4427                 break;
4428         case MII_ADVERTISE: /* Advertisement control reg */
4429                 rc = ADVERTISE_ALL;
4430                 break;
4431         case MII_LPA: /* Link partner ability reg */
4432                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4433                      LPA_100BASE4 | LPA_LPACK;
4434                 break;
4435         case MII_EXPANSION: /* Expansion register */
4436                 break;
4437         case MII_DCOUNTER: /* disconnect counter */
4438                 break;
4439         case MII_FCSCOUNTER: /* false carrier counter */
4440                 break;
4441         case MII_NWAYTEST: /* N-way auto-neg test register */
4442                 break;
4443         case MII_RERRCOUNTER: /* rx error counter */
4444                 rc = card->stats.rx_errors;
4445                 break;
4446         case MII_SREVISION: /* silicon revision */
4447                 break;
4448         case MII_RESV1: /* reserved 1 */
4449                 break;
4450         case MII_LBRERROR: /* loopback, rx, bypass error */
4451                 break;
4452         case MII_PHYADDR: /* physical address */
4453                 break;
4454         case MII_RESV2: /* reserved 2 */
4455                 break;
4456         case MII_TPISTATUS: /* TPI status for 10mbps */
4457                 break;
4458         case MII_NCONFIG: /* network interface config */
4459                 break;
4460         default:
4461                 break;
4462         }
4463         return rc;
4464 }
4465
4466 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4467                 struct qeth_cmd_buffer *iob, int len,
4468                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4469                         unsigned long),
4470                 void *reply_param)
4471 {
4472         u16 s1, s2;
4473
4474         QETH_CARD_TEXT(card, 4, "sendsnmp");
4475
4476         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4477         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4478                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4479         /* adjust PDU length fields in IPA_PDU_HEADER */
4480         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4481         s2 = (u32) len;
4482         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4483         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4484         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4485         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4486         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4487                                       reply_cb, reply_param);
4488 }
4489
4490 static int qeth_snmp_command_cb(struct qeth_card *card,
4491                 struct qeth_reply *reply, unsigned long sdata)
4492 {
4493         struct qeth_ipa_cmd *cmd;
4494         struct qeth_arp_query_info *qinfo;
4495         struct qeth_snmp_cmd *snmp;
4496         unsigned char *data;
4497         __u16 data_len;
4498
4499         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4500
4501         cmd = (struct qeth_ipa_cmd *) sdata;
4502         data = (unsigned char *)((char *)cmd - reply->offset);
4503         qinfo = (struct qeth_arp_query_info *) reply->param;
4504         snmp = &cmd->data.setadapterparms.data.snmp;
4505
4506         if (cmd->hdr.return_code) {
4507                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4508                 return 0;
4509         }
4510         if (cmd->data.setadapterparms.hdr.return_code) {
4511                 cmd->hdr.return_code =
4512                         cmd->data.setadapterparms.hdr.return_code;
4513                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4514                 return 0;
4515         }
4516         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4517         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4518                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4519         else
4520                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4521
4522         /* check if there is enough room in userspace */
4523         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4524                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4525                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4526                 return 0;
4527         }
4528         QETH_CARD_TEXT_(card, 4, "snore%i",
4529                        cmd->data.setadapterparms.hdr.used_total);
4530         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4531                 cmd->data.setadapterparms.hdr.seq_no);
4532         /*copy entries to user buffer*/
4533         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4534                 memcpy(qinfo->udata + qinfo->udata_offset,
4535                        (char *)snmp,
4536                        data_len + offsetof(struct qeth_snmp_cmd, data));
4537                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4538         } else {
4539                 memcpy(qinfo->udata + qinfo->udata_offset,
4540                        (char *)&snmp->request, data_len);
4541         }
4542         qinfo->udata_offset += data_len;
4543         /* check if all replies received ... */
4544                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4545                                cmd->data.setadapterparms.hdr.used_total);
4546                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4547                                cmd->data.setadapterparms.hdr.seq_no);
4548         if (cmd->data.setadapterparms.hdr.seq_no <
4549             cmd->data.setadapterparms.hdr.used_total)
4550                 return 1;
4551         return 0;
4552 }
4553
4554 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4555 {
4556         struct qeth_cmd_buffer *iob;
4557         struct qeth_ipa_cmd *cmd;
4558         struct qeth_snmp_ureq *ureq;
4559         unsigned int req_len;
4560         struct qeth_arp_query_info qinfo = {0, };
4561         int rc = 0;
4562
4563         QETH_CARD_TEXT(card, 3, "snmpcmd");
4564
4565         if (card->info.guestlan)
4566                 return -EOPNOTSUPP;
4567
4568         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4569             (!card->options.layer2)) {
4570                 return -EOPNOTSUPP;
4571         }
4572         /* skip 4 bytes (data_len struct member) to get req_len */
4573         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4574                 return -EFAULT;
4575         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4576                        sizeof(struct qeth_ipacmd_hdr) -
4577                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4578                 return -EINVAL;
4579         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4580         if (IS_ERR(ureq)) {
4581                 QETH_CARD_TEXT(card, 2, "snmpnome");
4582                 return PTR_ERR(ureq);
4583         }
4584         qinfo.udata_len = ureq->hdr.data_len;
4585         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4586         if (!qinfo.udata) {
4587                 kfree(ureq);
4588                 return -ENOMEM;
4589         }
4590         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4591
4592         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4593                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4594         if (!iob) {
4595                 rc = -ENOMEM;
4596                 goto out;
4597         }
4598         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4599         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4600         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4601                                     qeth_snmp_command_cb, (void *)&qinfo);
4602         if (rc)
4603                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4604                            QETH_CARD_IFNAME(card), rc);
4605         else {
4606                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4607                         rc = -EFAULT;
4608         }
4609 out:
4610         kfree(ureq);
4611         kfree(qinfo.udata);
4612         return rc;
4613 }
4614
4615 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4616                 struct qeth_reply *reply, unsigned long data)
4617 {
4618         struct qeth_ipa_cmd *cmd;
4619         struct qeth_qoat_priv *priv;
4620         char *resdata;
4621         int resdatalen;
4622
4623         QETH_CARD_TEXT(card, 3, "qoatcb");
4624
4625         cmd = (struct qeth_ipa_cmd *)data;
4626         priv = (struct qeth_qoat_priv *)reply->param;
4627         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4628         resdata = (char *)data + 28;
4629
4630         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4631                 cmd->hdr.return_code = IPA_RC_FFFF;
4632                 return 0;
4633         }
4634
4635         memcpy((priv->buffer + priv->response_len), resdata,
4636                 resdatalen);
4637         priv->response_len += resdatalen;
4638
4639         if (cmd->data.setadapterparms.hdr.seq_no <
4640             cmd->data.setadapterparms.hdr.used_total)
4641                 return 1;
4642         return 0;
4643 }
4644
4645 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4646 {
4647         int rc = 0;
4648         struct qeth_cmd_buffer *iob;
4649         struct qeth_ipa_cmd *cmd;
4650         struct qeth_query_oat *oat_req;
4651         struct qeth_query_oat_data oat_data;
4652         struct qeth_qoat_priv priv;
4653         void __user *tmp;
4654
4655         QETH_CARD_TEXT(card, 3, "qoatcmd");
4656
4657         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4658                 rc = -EOPNOTSUPP;
4659                 goto out;
4660         }
4661
4662         if (copy_from_user(&oat_data, udata,
4663             sizeof(struct qeth_query_oat_data))) {
4664                         rc = -EFAULT;
4665                         goto out;
4666         }
4667
4668         priv.buffer_len = oat_data.buffer_len;
4669         priv.response_len = 0;
4670         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4671         if (!priv.buffer) {
4672                 rc = -ENOMEM;
4673                 goto out;
4674         }
4675
4676         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4677                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4678                                    sizeof(struct qeth_query_oat));
4679         if (!iob) {
4680                 rc = -ENOMEM;
4681                 goto out_free;
4682         }
4683         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4684         oat_req = &cmd->data.setadapterparms.data.query_oat;
4685         oat_req->subcmd_code = oat_data.command;
4686
4687         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4688                                &priv);
4689         if (!rc) {
4690                 if (is_compat_task())
4691                         tmp = compat_ptr(oat_data.ptr);
4692                 else
4693                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4694
4695                 if (copy_to_user(tmp, priv.buffer,
4696                     priv.response_len)) {
4697                         rc = -EFAULT;
4698                         goto out_free;
4699                 }
4700
4701                 oat_data.response_len = priv.response_len;
4702
4703                 if (copy_to_user(udata, &oat_data,
4704                     sizeof(struct qeth_query_oat_data)))
4705                         rc = -EFAULT;
4706         } else
4707                 if (rc == IPA_RC_FFFF)
4708                         rc = -EFAULT;
4709
4710 out_free:
4711         kfree(priv.buffer);
4712 out:
4713         return rc;
4714 }
4715
4716 static int qeth_query_card_info_cb(struct qeth_card *card,
4717                                    struct qeth_reply *reply, unsigned long data)
4718 {
4719         struct qeth_ipa_cmd *cmd;
4720         struct qeth_query_card_info *card_info;
4721         struct carrier_info *carrier_info;
4722
4723         QETH_CARD_TEXT(card, 2, "qcrdincb");
4724         carrier_info = (struct carrier_info *)reply->param;
4725         cmd = (struct qeth_ipa_cmd *)data;
4726         card_info = &cmd->data.setadapterparms.data.card_info;
4727         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4728                 carrier_info->card_type = card_info->card_type;
4729                 carrier_info->port_mode = card_info->port_mode;
4730                 carrier_info->port_speed = card_info->port_speed;
4731         }
4732
4733         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4734         return 0;
4735 }
4736
4737 static int qeth_query_card_info(struct qeth_card *card,
4738                                 struct carrier_info *carrier_info)
4739 {
4740         struct qeth_cmd_buffer *iob;
4741
4742         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4743         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4744                 return -EOPNOTSUPP;
4745         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4746                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4747         if (!iob)
4748                 return -ENOMEM;
4749         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4750                                         (void *)carrier_info);
4751 }
4752
4753 /**
4754  * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4755  * @card: pointer to a qeth_card
4756  *
4757  * Returns
4758  *      0, if a MAC address has been set for the card's netdevice
4759  *      a return code, for various error conditions
4760  */
4761 int qeth_vm_request_mac(struct qeth_card *card)
4762 {
4763         struct diag26c_mac_resp *response;
4764         struct diag26c_mac_req *request;
4765         struct ccw_dev_id id;
4766         int rc;
4767
4768         QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4769
4770         if (!card->dev)
4771                 return -ENODEV;
4772
4773         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4774         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4775         if (!request || !response) {
4776                 rc = -ENOMEM;
4777                 goto out;
4778         }
4779
4780         ccw_device_get_id(CARD_DDEV(card), &id);
4781         request->resp_buf_len = sizeof(*response);
4782         request->resp_version = DIAG26C_VERSION2;
4783         request->op_code = DIAG26C_GET_MAC;
4784         request->devno = id.devno;
4785
4786         rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4787         if (rc)
4788                 goto out;
4789
4790         if (request->resp_buf_len < sizeof(*response) ||
4791             response->version != request->resp_version) {
4792                 rc = -EIO;
4793                 QETH_DBF_TEXT(SETUP, 2, "badresp");
4794                 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4795                              sizeof(request->resp_buf_len));
4796         } else if (!is_valid_ether_addr(response->mac)) {
4797                 rc = -EINVAL;
4798                 QETH_DBF_TEXT(SETUP, 2, "badmac");
4799                 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4800         } else {
4801                 ether_addr_copy(card->dev->dev_addr, response->mac);
4802         }
4803
4804 out:
4805         kfree(response);
4806         kfree(request);
4807         return rc;
4808 }
4809 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4810
4811 static int qeth_get_qdio_q_format(struct qeth_card *card)
4812 {
4813         if (card->info.type == QETH_CARD_TYPE_IQD)
4814                 return QDIO_IQDIO_QFMT;
4815         else
4816                 return QDIO_QETH_QFMT;
4817 }
4818
4819 static void qeth_determine_capabilities(struct qeth_card *card)
4820 {
4821         int rc;
4822         int length;
4823         char *prcd;
4824         struct ccw_device *ddev;
4825         int ddev_offline = 0;
4826
4827         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4828         ddev = CARD_DDEV(card);
4829         if (!ddev->online) {
4830                 ddev_offline = 1;
4831                 rc = ccw_device_set_online(ddev);
4832                 if (rc) {
4833                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4834                         goto out;
4835                 }
4836         }
4837
4838         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4839         if (rc) {
4840                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4841                         dev_name(&card->gdev->dev), rc);
4842                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4843                 goto out_offline;
4844         }
4845         qeth_configure_unitaddr(card, prcd);
4846         if (ddev_offline)
4847                 qeth_configure_blkt_default(card, prcd);
4848         kfree(prcd);
4849
4850         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4851         if (rc)
4852                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4853
4854         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4855         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4856         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4857         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4858         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4859         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4860             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4861             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4862                 dev_info(&card->gdev->dev,
4863                         "Completion Queueing supported\n");
4864         } else {
4865                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4866         }
4867
4868
4869 out_offline:
4870         if (ddev_offline == 1)
4871                 ccw_device_set_offline(ddev);
4872 out:
4873         return;
4874 }
4875
4876 static void qeth_qdio_establish_cq(struct qeth_card *card,
4877                                    struct qdio_buffer **in_sbal_ptrs,
4878                                    void (**queue_start_poll)
4879                                         (struct ccw_device *, int,
4880                                          unsigned long))
4881 {
4882         int i;
4883
4884         if (card->options.cq == QETH_CQ_ENABLED) {
4885                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4886                              (card->qdio.no_in_queues - 1);
4887                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4888                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4889                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4890                 }
4891
4892                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4893         }
4894 }
4895
4896 static int qeth_qdio_establish(struct qeth_card *card)
4897 {
4898         struct qdio_initialize init_data;
4899         char *qib_param_field;
4900         struct qdio_buffer **in_sbal_ptrs;
4901         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4902         struct qdio_buffer **out_sbal_ptrs;
4903         int i, j, k;
4904         int rc = 0;
4905
4906         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4907
4908         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4909                               GFP_KERNEL);
4910         if (!qib_param_field) {
4911                 rc =  -ENOMEM;
4912                 goto out_free_nothing;
4913         }
4914
4915         qeth_create_qib_param_field(card, qib_param_field);
4916         qeth_create_qib_param_field_blkt(card, qib_param_field);
4917
4918         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4919                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4920                                GFP_KERNEL);
4921         if (!in_sbal_ptrs) {
4922                 rc = -ENOMEM;
4923                 goto out_free_qib_param;
4924         }
4925         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4926                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4927                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4928         }
4929
4930         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4931                                    GFP_KERNEL);
4932         if (!queue_start_poll) {
4933                 rc = -ENOMEM;
4934                 goto out_free_in_sbals;
4935         }
4936         for (i = 0; i < card->qdio.no_in_queues; ++i)
4937                 queue_start_poll[i] = card->discipline->start_poll;
4938
4939         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4940
4941         out_sbal_ptrs =
4942                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4943                         sizeof(void *), GFP_KERNEL);
4944         if (!out_sbal_ptrs) {
4945                 rc = -ENOMEM;
4946                 goto out_free_queue_start_poll;
4947         }
4948         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4949                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4950                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4951                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4952                 }
4953
4954         memset(&init_data, 0, sizeof(struct qdio_initialize));
4955         init_data.cdev                   = CARD_DDEV(card);
4956         init_data.q_format               = qeth_get_qdio_q_format(card);
4957         init_data.qib_param_field_format = 0;
4958         init_data.qib_param_field        = qib_param_field;
4959         init_data.no_input_qs            = card->qdio.no_in_queues;
4960         init_data.no_output_qs           = card->qdio.no_out_queues;
4961         init_data.input_handler          = card->discipline->input_handler;
4962         init_data.output_handler         = card->discipline->output_handler;
4963         init_data.queue_start_poll_array = queue_start_poll;
4964         init_data.int_parm               = (unsigned long) card;
4965         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4966         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4967         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4968         init_data.scan_threshold =
4969                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4970
4971         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4972                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4973                 rc = qdio_allocate(&init_data);
4974                 if (rc) {
4975                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4976                         goto out;
4977                 }
4978                 rc = qdio_establish(&init_data);
4979                 if (rc) {
4980                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4981                         qdio_free(CARD_DDEV(card));
4982                 }
4983         }
4984
4985         switch (card->options.cq) {
4986         case QETH_CQ_ENABLED:
4987                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4988                 break;
4989         case QETH_CQ_DISABLED:
4990                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4991                 break;
4992         default:
4993                 break;
4994         }
4995 out:
4996         kfree(out_sbal_ptrs);
4997 out_free_queue_start_poll:
4998         kfree(queue_start_poll);
4999 out_free_in_sbals:
5000         kfree(in_sbal_ptrs);
5001 out_free_qib_param:
5002         kfree(qib_param_field);
5003 out_free_nothing:
5004         return rc;
5005 }
5006
5007 static void qeth_core_free_card(struct qeth_card *card)
5008 {
5009
5010         QETH_DBF_TEXT(SETUP, 2, "freecrd");
5011         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5012         qeth_clean_channel(&card->read);
5013         qeth_clean_channel(&card->write);
5014         if (card->dev)
5015                 free_netdev(card->dev);
5016         qeth_free_qdio_buffers(card);
5017         unregister_service_level(&card->qeth_service_level);
5018         kfree(card);
5019 }
5020
5021 void qeth_trace_features(struct qeth_card *card)
5022 {
5023         QETH_CARD_TEXT(card, 2, "features");
5024         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5025         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5026         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5027         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5028                       sizeof(card->info.diagass_support));
5029 }
5030 EXPORT_SYMBOL_GPL(qeth_trace_features);
5031
5032 static struct ccw_device_id qeth_ids[] = {
5033         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5034                                         .driver_info = QETH_CARD_TYPE_OSD},
5035         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5036                                         .driver_info = QETH_CARD_TYPE_IQD},
5037         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5038                                         .driver_info = QETH_CARD_TYPE_OSN},
5039         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5040                                         .driver_info = QETH_CARD_TYPE_OSM},
5041         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5042                                         .driver_info = QETH_CARD_TYPE_OSX},
5043         {},
5044 };
5045 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5046
5047 static struct ccw_driver qeth_ccw_driver = {
5048         .driver = {
5049                 .owner = THIS_MODULE,
5050                 .name = "qeth",
5051         },
5052         .ids = qeth_ids,
5053         .probe = ccwgroup_probe_ccwdev,
5054         .remove = ccwgroup_remove_ccwdev,
5055 };
5056
5057 int qeth_core_hardsetup_card(struct qeth_card *card)
5058 {
5059         int retries = 3;
5060         int rc;
5061
5062         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5063         atomic_set(&card->force_alloc_skb, 0);
5064         qeth_update_from_chp_desc(card);
5065 retry:
5066         if (retries < 3)
5067                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5068                         dev_name(&card->gdev->dev));
5069         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5070         ccw_device_set_offline(CARD_DDEV(card));
5071         ccw_device_set_offline(CARD_WDEV(card));
5072         ccw_device_set_offline(CARD_RDEV(card));
5073         qdio_free(CARD_DDEV(card));
5074         rc = ccw_device_set_online(CARD_RDEV(card));
5075         if (rc)
5076                 goto retriable;
5077         rc = ccw_device_set_online(CARD_WDEV(card));
5078         if (rc)
5079                 goto retriable;
5080         rc = ccw_device_set_online(CARD_DDEV(card));
5081         if (rc)
5082                 goto retriable;
5083 retriable:
5084         if (rc == -ERESTARTSYS) {
5085                 QETH_DBF_TEXT(SETUP, 2, "break1");
5086                 return rc;
5087         } else if (rc) {
5088                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5089                 if (--retries < 0)
5090                         goto out;
5091                 else
5092                         goto retry;
5093         }
5094         qeth_determine_capabilities(card);
5095         qeth_init_tokens(card);
5096         qeth_init_func_level(card);
5097         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5098         if (rc == -ERESTARTSYS) {
5099                 QETH_DBF_TEXT(SETUP, 2, "break2");
5100                 return rc;
5101         } else if (rc) {
5102                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5103                 if (--retries < 0)
5104                         goto out;
5105                 else
5106                         goto retry;
5107         }
5108         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5109         if (rc == -ERESTARTSYS) {
5110                 QETH_DBF_TEXT(SETUP, 2, "break3");
5111                 return rc;
5112         } else if (rc) {
5113                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5114                 if (--retries < 0)
5115                         goto out;
5116                 else
5117                         goto retry;
5118         }
5119         card->read_or_write_problem = 0;
5120         rc = qeth_mpc_initialize(card);
5121         if (rc) {
5122                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5123                 goto out;
5124         }
5125
5126         rc = qeth_send_startlan(card);
5127         if (rc) {
5128                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5129                 if (rc == IPA_RC_LAN_OFFLINE) {
5130                         dev_warn(&card->gdev->dev,
5131                                 "The LAN is offline\n");
5132                         card->lan_online = 0;
5133                 } else {
5134                         rc = -ENODEV;
5135                         goto out;
5136                 }
5137         } else
5138                 card->lan_online = 1;
5139
5140         card->options.ipa4.supported_funcs = 0;
5141         card->options.ipa6.supported_funcs = 0;
5142         card->options.adp.supported_funcs = 0;
5143         card->options.sbp.supported_funcs = 0;
5144         card->info.diagass_support = 0;
5145         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5146         if (rc == -ENOMEM)
5147                 goto out;
5148         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5149                 rc = qeth_query_setadapterparms(card);
5150                 if (rc < 0) {
5151                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5152                         goto out;
5153                 }
5154         }
5155         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5156                 rc = qeth_query_setdiagass(card);
5157                 if (rc < 0) {
5158                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5159                         goto out;
5160                 }
5161         }
5162         return 0;
5163 out:
5164         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5165                 "an error on the device\n");
5166         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5167                 dev_name(&card->gdev->dev), rc);
5168         return rc;
5169 }
5170 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5171
5172 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5173                                  struct sk_buff *skb, int offset, int data_len)
5174 {
5175         struct page *page = virt_to_page(element->addr);
5176         unsigned int next_frag;
5177
5178         /* first fill the linear space */
5179         if (!skb->len) {
5180                 unsigned int linear = min(data_len, skb_tailroom(skb));
5181
5182                 skb_put_data(skb, element->addr + offset, linear);
5183                 data_len -= linear;
5184                 if (!data_len)
5185                         return;
5186                 offset += linear;
5187                 /* fall through to add page frag for remaining data */
5188         }
5189
5190         next_frag = skb_shinfo(skb)->nr_frags;
5191         get_page(page);
5192         skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5193 }
5194
5195 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5196 {
5197         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5198 }
5199
5200 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5201                 struct qeth_qdio_buffer *qethbuffer,
5202                 struct qdio_buffer_element **__element, int *__offset,
5203                 struct qeth_hdr **hdr)
5204 {
5205         struct qdio_buffer_element *element = *__element;
5206         struct qdio_buffer *buffer = qethbuffer->buffer;
5207         int offset = *__offset;
5208         struct sk_buff *skb;
5209         int skb_len = 0;
5210         void *data_ptr;
5211         int data_len;
5212         int headroom = 0;
5213         int use_rx_sg = 0;
5214
5215         /* qeth_hdr must not cross element boundaries */
5216         while (element->length < offset + sizeof(struct qeth_hdr)) {
5217                 if (qeth_is_last_sbale(element))
5218                         return NULL;
5219                 element++;
5220                 offset = 0;
5221         }
5222         *hdr = element->addr + offset;
5223
5224         offset += sizeof(struct qeth_hdr);
5225         switch ((*hdr)->hdr.l2.id) {
5226         case QETH_HEADER_TYPE_LAYER2:
5227                 skb_len = (*hdr)->hdr.l2.pkt_length;
5228                 break;
5229         case QETH_HEADER_TYPE_LAYER3:
5230                 skb_len = (*hdr)->hdr.l3.length;
5231                 headroom = ETH_HLEN;
5232                 break;
5233         case QETH_HEADER_TYPE_OSN:
5234                 skb_len = (*hdr)->hdr.osn.pdu_length;
5235                 headroom = sizeof(struct qeth_hdr);
5236                 break;
5237         default:
5238                 break;
5239         }
5240
5241         if (!skb_len)
5242                 return NULL;
5243
5244         if (((skb_len >= card->options.rx_sg_cb) &&
5245              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5246              (!atomic_read(&card->force_alloc_skb))) ||
5247             (card->options.cq == QETH_CQ_ENABLED))
5248                 use_rx_sg = 1;
5249
5250         if (use_rx_sg && qethbuffer->rx_skb) {
5251                 /* QETH_CQ_ENABLED only: */
5252                 skb = qethbuffer->rx_skb;
5253                 qethbuffer->rx_skb = NULL;
5254         } else {
5255                 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5256
5257                 skb = dev_alloc_skb(linear + headroom);
5258         }
5259         if (!skb)
5260                 goto no_mem;
5261         if (headroom)
5262                 skb_reserve(skb, headroom);
5263
5264         data_ptr = element->addr + offset;
5265         while (skb_len) {
5266                 data_len = min(skb_len, (int)(element->length - offset));
5267                 if (data_len) {
5268                         if (use_rx_sg)
5269                                 qeth_create_skb_frag(element, skb, offset,
5270                                                      data_len);
5271                         else
5272                                 skb_put_data(skb, data_ptr, data_len);
5273                 }
5274                 skb_len -= data_len;
5275                 if (skb_len) {
5276                         if (qeth_is_last_sbale(element)) {
5277                                 QETH_CARD_TEXT(card, 4, "unexeob");
5278                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5279                                 dev_kfree_skb_any(skb);
5280                                 card->stats.rx_errors++;
5281                                 return NULL;
5282                         }
5283                         element++;
5284                         offset = 0;
5285                         data_ptr = element->addr;
5286                 } else {
5287                         offset += data_len;
5288                 }
5289         }
5290         *__element = element;
5291         *__offset = offset;
5292         if (use_rx_sg && card->options.performance_stats) {
5293                 card->perf_stats.sg_skbs_rx++;
5294                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5295         }
5296         return skb;
5297 no_mem:
5298         if (net_ratelimit()) {
5299                 QETH_CARD_TEXT(card, 2, "noskbmem");
5300         }
5301         card->stats.rx_dropped++;
5302         return NULL;
5303 }
5304 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5305
5306 int qeth_poll(struct napi_struct *napi, int budget)
5307 {
5308         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5309         int work_done = 0;
5310         struct qeth_qdio_buffer *buffer;
5311         int done;
5312         int new_budget = budget;
5313
5314         if (card->options.performance_stats) {
5315                 card->perf_stats.inbound_cnt++;
5316                 card->perf_stats.inbound_start_time = qeth_get_micros();
5317         }
5318
5319         while (1) {
5320                 if (!card->rx.b_count) {
5321                         card->rx.qdio_err = 0;
5322                         card->rx.b_count = qdio_get_next_buffers(
5323                                 card->data.ccwdev, 0, &card->rx.b_index,
5324                                 &card->rx.qdio_err);
5325                         if (card->rx.b_count <= 0) {
5326                                 card->rx.b_count = 0;
5327                                 break;
5328                         }
5329                         card->rx.b_element =
5330                                 &card->qdio.in_q->bufs[card->rx.b_index]
5331                                 .buffer->element[0];
5332                         card->rx.e_offset = 0;
5333                 }
5334
5335                 while (card->rx.b_count) {
5336                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5337                         if (!(card->rx.qdio_err &&
5338                             qeth_check_qdio_errors(card, buffer->buffer,
5339                             card->rx.qdio_err, "qinerr")))
5340                                 work_done +=
5341                                         card->discipline->process_rx_buffer(
5342                                                 card, new_budget, &done);
5343                         else
5344                                 done = 1;
5345
5346                         if (done) {
5347                                 if (card->options.performance_stats)
5348                                         card->perf_stats.bufs_rec++;
5349                                 qeth_put_buffer_pool_entry(card,
5350                                         buffer->pool_entry);
5351                                 qeth_queue_input_buffer(card, card->rx.b_index);
5352                                 card->rx.b_count--;
5353                                 if (card->rx.b_count) {
5354                                         card->rx.b_index =
5355                                                 (card->rx.b_index + 1) %
5356                                                 QDIO_MAX_BUFFERS_PER_Q;
5357                                         card->rx.b_element =
5358                                                 &card->qdio.in_q
5359                                                 ->bufs[card->rx.b_index]
5360                                                 .buffer->element[0];
5361                                         card->rx.e_offset = 0;
5362                                 }
5363                         }
5364
5365                         if (work_done >= budget)
5366                                 goto out;
5367                         else
5368                                 new_budget = budget - work_done;
5369                 }
5370         }
5371
5372         napi_complete_done(napi, work_done);
5373         if (qdio_start_irq(card->data.ccwdev, 0))
5374                 napi_schedule(&card->napi);
5375 out:
5376         if (card->options.performance_stats)
5377                 card->perf_stats.inbound_time += qeth_get_micros() -
5378                         card->perf_stats.inbound_start_time;
5379         return work_done;
5380 }
5381 EXPORT_SYMBOL_GPL(qeth_poll);
5382
5383 int qeth_setassparms_cb(struct qeth_card *card,
5384                         struct qeth_reply *reply, unsigned long data)
5385 {
5386         struct qeth_ipa_cmd *cmd;
5387
5388         QETH_CARD_TEXT(card, 4, "defadpcb");
5389
5390         cmd = (struct qeth_ipa_cmd *) data;
5391         if (cmd->hdr.return_code == 0) {
5392                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5393                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5394                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5395                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5396                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5397         }
5398         return 0;
5399 }
5400 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5401
5402 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5403                                                  enum qeth_ipa_funcs ipa_func,
5404                                                  __u16 cmd_code, __u16 len,
5405                                                  enum qeth_prot_versions prot)
5406 {
5407         struct qeth_cmd_buffer *iob;
5408         struct qeth_ipa_cmd *cmd;
5409
5410         QETH_CARD_TEXT(card, 4, "getasscm");
5411         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5412
5413         if (iob) {
5414                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5415                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5416                 cmd->data.setassparms.hdr.length = 8 + len;
5417                 cmd->data.setassparms.hdr.command_code = cmd_code;
5418                 cmd->data.setassparms.hdr.return_code = 0;
5419                 cmd->data.setassparms.hdr.seq_no = 0;
5420         }
5421
5422         return iob;
5423 }
5424 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5425
5426 int qeth_send_setassparms(struct qeth_card *card,
5427                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5428                           int (*reply_cb)(struct qeth_card *,
5429                                           struct qeth_reply *, unsigned long),
5430                           void *reply_param)
5431 {
5432         int rc;
5433         struct qeth_ipa_cmd *cmd;
5434
5435         QETH_CARD_TEXT(card, 4, "sendassp");
5436
5437         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5438         if (len <= sizeof(__u32))
5439                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5440         else   /* (len > sizeof(__u32)) */
5441                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5442
5443         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5444         return rc;
5445 }
5446 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5447
5448 int qeth_send_simple_setassparms(struct qeth_card *card,
5449                                  enum qeth_ipa_funcs ipa_func,
5450                                  __u16 cmd_code, long data)
5451 {
5452         int rc;
5453         int length = 0;
5454         struct qeth_cmd_buffer *iob;
5455
5456         QETH_CARD_TEXT(card, 4, "simassp4");
5457         if (data)
5458                 length = sizeof(__u32);
5459         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5460                                        length, QETH_PROT_IPV4);
5461         if (!iob)
5462                 return -ENOMEM;
5463         rc = qeth_send_setassparms(card, iob, length, data,
5464                                    qeth_setassparms_cb, NULL);
5465         return rc;
5466 }
5467 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5468
5469 static void qeth_unregister_dbf_views(void)
5470 {
5471         int x;
5472         for (x = 0; x < QETH_DBF_INFOS; x++) {
5473                 debug_unregister(qeth_dbf[x].id);
5474                 qeth_dbf[x].id = NULL;
5475         }
5476 }
5477
5478 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5479 {
5480         char dbf_txt_buf[32];
5481         va_list args;
5482
5483         if (!debug_level_enabled(id, level))
5484                 return;
5485         va_start(args, fmt);
5486         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5487         va_end(args);
5488         debug_text_event(id, level, dbf_txt_buf);
5489 }
5490 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5491
5492 static int qeth_register_dbf_views(void)
5493 {
5494         int ret;
5495         int x;
5496
5497         for (x = 0; x < QETH_DBF_INFOS; x++) {
5498                 /* register the areas */
5499                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5500                                                 qeth_dbf[x].pages,
5501                                                 qeth_dbf[x].areas,
5502                                                 qeth_dbf[x].len);
5503                 if (qeth_dbf[x].id == NULL) {
5504                         qeth_unregister_dbf_views();
5505                         return -ENOMEM;
5506                 }
5507
5508                 /* register a view */
5509                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5510                 if (ret) {
5511                         qeth_unregister_dbf_views();
5512                         return ret;
5513                 }
5514
5515                 /* set a passing level */
5516                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5517         }
5518
5519         return 0;
5520 }
5521
5522 int qeth_core_load_discipline(struct qeth_card *card,
5523                 enum qeth_discipline_id discipline)
5524 {
5525         int rc = 0;
5526
5527         mutex_lock(&qeth_mod_mutex);
5528         switch (discipline) {
5529         case QETH_DISCIPLINE_LAYER3:
5530                 card->discipline = try_then_request_module(
5531                         symbol_get(qeth_l3_discipline), "qeth_l3");
5532                 break;
5533         case QETH_DISCIPLINE_LAYER2:
5534                 card->discipline = try_then_request_module(
5535                         symbol_get(qeth_l2_discipline), "qeth_l2");
5536                 break;
5537         default:
5538                 break;
5539         }
5540
5541         if (!card->discipline) {
5542                 dev_err(&card->gdev->dev, "There is no kernel module to "
5543                         "support discipline %d\n", discipline);
5544                 rc = -EINVAL;
5545         }
5546         mutex_unlock(&qeth_mod_mutex);
5547         return rc;
5548 }
5549
5550 void qeth_core_free_discipline(struct qeth_card *card)
5551 {
5552         if (card->options.layer2)
5553                 symbol_put(qeth_l2_discipline);
5554         else
5555                 symbol_put(qeth_l3_discipline);
5556         card->discipline = NULL;
5557 }
5558
5559 const struct device_type qeth_generic_devtype = {
5560         .name = "qeth_generic",
5561         .groups = qeth_generic_attr_groups,
5562 };
5563 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5564
5565 static const struct device_type qeth_osn_devtype = {
5566         .name = "qeth_osn",
5567         .groups = qeth_osn_attr_groups,
5568 };
5569
5570 #define DBF_NAME_LEN    20
5571
5572 struct qeth_dbf_entry {
5573         char dbf_name[DBF_NAME_LEN];
5574         debug_info_t *dbf_info;
5575         struct list_head dbf_list;
5576 };
5577
5578 static LIST_HEAD(qeth_dbf_list);
5579 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5580
5581 static debug_info_t *qeth_get_dbf_entry(char *name)
5582 {
5583         struct qeth_dbf_entry *entry;
5584         debug_info_t *rc = NULL;
5585
5586         mutex_lock(&qeth_dbf_list_mutex);
5587         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5588                 if (strcmp(entry->dbf_name, name) == 0) {
5589                         rc = entry->dbf_info;
5590                         break;
5591                 }
5592         }
5593         mutex_unlock(&qeth_dbf_list_mutex);
5594         return rc;
5595 }
5596
5597 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5598 {
5599         struct qeth_dbf_entry *new_entry;
5600
5601         card->debug = debug_register(name, 2, 1, 8);
5602         if (!card->debug) {
5603                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5604                 goto err;
5605         }
5606         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5607                 goto err_dbg;
5608         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5609         if (!new_entry)
5610                 goto err_dbg;
5611         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5612         new_entry->dbf_info = card->debug;
5613         mutex_lock(&qeth_dbf_list_mutex);
5614         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5615         mutex_unlock(&qeth_dbf_list_mutex);
5616
5617         return 0;
5618
5619 err_dbg:
5620         debug_unregister(card->debug);
5621 err:
5622         return -ENOMEM;
5623 }
5624
5625 static void qeth_clear_dbf_list(void)
5626 {
5627         struct qeth_dbf_entry *entry, *tmp;
5628
5629         mutex_lock(&qeth_dbf_list_mutex);
5630         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5631                 list_del(&entry->dbf_list);
5632                 debug_unregister(entry->dbf_info);
5633                 kfree(entry);
5634         }
5635         mutex_unlock(&qeth_dbf_list_mutex);
5636 }
5637
5638 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5639 {
5640         struct qeth_card *card;
5641         struct device *dev;
5642         int rc;
5643         enum qeth_discipline_id enforced_disc;
5644         unsigned long flags;
5645         char dbf_name[DBF_NAME_LEN];
5646
5647         QETH_DBF_TEXT(SETUP, 2, "probedev");
5648
5649         dev = &gdev->dev;
5650         if (!get_device(dev))
5651                 return -ENODEV;
5652
5653         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5654
5655         card = qeth_alloc_card();
5656         if (!card) {
5657                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5658                 rc = -ENOMEM;
5659                 goto err_dev;
5660         }
5661
5662         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5663                 dev_name(&gdev->dev));
5664         card->debug = qeth_get_dbf_entry(dbf_name);
5665         if (!card->debug) {
5666                 rc = qeth_add_dbf_entry(card, dbf_name);
5667                 if (rc)
5668                         goto err_card;
5669         }
5670
5671         card->read.ccwdev  = gdev->cdev[0];
5672         card->write.ccwdev = gdev->cdev[1];
5673         card->data.ccwdev  = gdev->cdev[2];
5674         dev_set_drvdata(&gdev->dev, card);
5675         card->gdev = gdev;
5676         gdev->cdev[0]->handler = qeth_irq;
5677         gdev->cdev[1]->handler = qeth_irq;
5678         gdev->cdev[2]->handler = qeth_irq;
5679
5680         qeth_determine_card_type(card);
5681         rc = qeth_setup_card(card);
5682         if (rc) {
5683                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5684                 goto err_card;
5685         }
5686
5687         qeth_determine_capabilities(card);
5688         enforced_disc = qeth_enforce_discipline(card);
5689         switch (enforced_disc) {
5690         case QETH_DISCIPLINE_UNDETERMINED:
5691                 gdev->dev.type = &qeth_generic_devtype;
5692                 break;
5693         default:
5694                 card->info.layer_enforced = true;
5695                 rc = qeth_core_load_discipline(card, enforced_disc);
5696                 if (rc)
5697                         goto err_card;
5698
5699                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5700                                         ? card->discipline->devtype
5701                                         : &qeth_osn_devtype;
5702                 rc = card->discipline->setup(card->gdev);
5703                 if (rc)
5704                         goto err_disc;
5705                 break;
5706         }
5707
5708         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5709         list_add_tail(&card->list, &qeth_core_card_list.list);
5710         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5711         return 0;
5712
5713 err_disc:
5714         qeth_core_free_discipline(card);
5715 err_card:
5716         qeth_core_free_card(card);
5717 err_dev:
5718         put_device(dev);
5719         return rc;
5720 }
5721
5722 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5723 {
5724         unsigned long flags;
5725         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5726
5727         QETH_DBF_TEXT(SETUP, 2, "removedv");
5728
5729         if (card->discipline) {
5730                 card->discipline->remove(gdev);
5731                 qeth_core_free_discipline(card);
5732         }
5733
5734         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5735         list_del(&card->list);
5736         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5737         qeth_core_free_card(card);
5738         dev_set_drvdata(&gdev->dev, NULL);
5739         put_device(&gdev->dev);
5740         return;
5741 }
5742
5743 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5744 {
5745         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5746         int rc = 0;
5747         enum qeth_discipline_id def_discipline;
5748
5749         if (!card->discipline) {
5750                 if (card->info.type == QETH_CARD_TYPE_IQD)
5751                         def_discipline = QETH_DISCIPLINE_LAYER3;
5752                 else
5753                         def_discipline = QETH_DISCIPLINE_LAYER2;
5754                 rc = qeth_core_load_discipline(card, def_discipline);
5755                 if (rc)
5756                         goto err;
5757                 rc = card->discipline->setup(card->gdev);
5758                 if (rc) {
5759                         qeth_core_free_discipline(card);
5760                         goto err;
5761                 }
5762         }
5763         rc = card->discipline->set_online(gdev);
5764 err:
5765         return rc;
5766 }
5767
5768 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5769 {
5770         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5771         return card->discipline->set_offline(gdev);
5772 }
5773
5774 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5775 {
5776         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5777         qeth_set_allowed_threads(card, 0, 1);
5778         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5779                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5780         qeth_qdio_clear_card(card, 0);
5781         qeth_clear_qdio_buffers(card);
5782         qdio_free(CARD_DDEV(card));
5783 }
5784
5785 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5786 {
5787         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5788         if (card->discipline && card->discipline->freeze)
5789                 return card->discipline->freeze(gdev);
5790         return 0;
5791 }
5792
5793 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5794 {
5795         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5796         if (card->discipline && card->discipline->thaw)
5797                 return card->discipline->thaw(gdev);
5798         return 0;
5799 }
5800
5801 static int qeth_core_restore(struct ccwgroup_device *gdev)
5802 {
5803         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5804         if (card->discipline && card->discipline->restore)
5805                 return card->discipline->restore(gdev);
5806         return 0;
5807 }
5808
5809 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5810         .driver = {
5811                 .owner = THIS_MODULE,
5812                 .name = "qeth",
5813         },
5814         .ccw_driver = &qeth_ccw_driver,
5815         .setup = qeth_core_probe_device,
5816         .remove = qeth_core_remove_device,
5817         .set_online = qeth_core_set_online,
5818         .set_offline = qeth_core_set_offline,
5819         .shutdown = qeth_core_shutdown,
5820         .prepare = NULL,
5821         .complete = NULL,
5822         .freeze = qeth_core_freeze,
5823         .thaw = qeth_core_thaw,
5824         .restore = qeth_core_restore,
5825 };
5826
5827 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5828                            size_t count)
5829 {
5830         int err;
5831
5832         err = ccwgroup_create_dev(qeth_core_root_dev,
5833                                   &qeth_core_ccwgroup_driver, 3, buf);
5834
5835         return err ? err : count;
5836 }
5837 static DRIVER_ATTR_WO(group);
5838
5839 static struct attribute *qeth_drv_attrs[] = {
5840         &driver_attr_group.attr,
5841         NULL,
5842 };
5843 static struct attribute_group qeth_drv_attr_group = {
5844         .attrs = qeth_drv_attrs,
5845 };
5846 static const struct attribute_group *qeth_drv_attr_groups[] = {
5847         &qeth_drv_attr_group,
5848         NULL,
5849 };
5850
5851 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5852 {
5853         struct qeth_card *card = dev->ml_priv;
5854         struct mii_ioctl_data *mii_data;
5855         int rc = 0;
5856
5857         if (!card)
5858                 return -ENODEV;
5859
5860         if (!qeth_card_hw_is_reachable(card))
5861                 return -ENODEV;
5862
5863         if (card->info.type == QETH_CARD_TYPE_OSN)
5864                 return -EPERM;
5865
5866         switch (cmd) {
5867         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5868                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5869                 break;
5870         case SIOC_QETH_GET_CARD_TYPE:
5871                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5872                      card->info.type == QETH_CARD_TYPE_OSM ||
5873                      card->info.type == QETH_CARD_TYPE_OSX) &&
5874                     !card->info.guestlan)
5875                         return 1;
5876                 else
5877                         return 0;
5878         case SIOCGMIIPHY:
5879                 mii_data = if_mii(rq);
5880                 mii_data->phy_id = 0;
5881                 break;
5882         case SIOCGMIIREG:
5883                 mii_data = if_mii(rq);
5884                 if (mii_data->phy_id != 0)
5885                         rc = -EINVAL;
5886                 else
5887                         mii_data->val_out = qeth_mdio_read(dev,
5888                                 mii_data->phy_id, mii_data->reg_num);
5889                 break;
5890         case SIOC_QETH_QUERY_OAT:
5891                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5892                 break;
5893         default:
5894                 if (card->discipline->do_ioctl)
5895                         rc = card->discipline->do_ioctl(dev, rq, cmd);
5896                 else
5897                         rc = -EOPNOTSUPP;
5898         }
5899         if (rc)
5900                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5901         return rc;
5902 }
5903 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5904
5905 static struct {
5906         const char str[ETH_GSTRING_LEN];
5907 } qeth_ethtool_stats_keys[] = {
5908 /*  0 */{"rx skbs"},
5909         {"rx buffers"},
5910         {"tx skbs"},
5911         {"tx buffers"},
5912         {"tx skbs no packing"},
5913         {"tx buffers no packing"},
5914         {"tx skbs packing"},
5915         {"tx buffers packing"},
5916         {"tx sg skbs"},
5917         {"tx sg frags"},
5918 /* 10 */{"rx sg skbs"},
5919         {"rx sg frags"},
5920         {"rx sg page allocs"},
5921         {"tx large kbytes"},
5922         {"tx large count"},
5923         {"tx pk state ch n->p"},
5924         {"tx pk state ch p->n"},
5925         {"tx pk watermark low"},
5926         {"tx pk watermark high"},
5927         {"queue 0 buffer usage"},
5928 /* 20 */{"queue 1 buffer usage"},
5929         {"queue 2 buffer usage"},
5930         {"queue 3 buffer usage"},
5931         {"rx poll time"},
5932         {"rx poll count"},
5933         {"rx do_QDIO time"},
5934         {"rx do_QDIO count"},
5935         {"tx handler time"},
5936         {"tx handler count"},
5937         {"tx time"},
5938 /* 30 */{"tx count"},
5939         {"tx do_QDIO time"},
5940         {"tx do_QDIO count"},
5941         {"tx csum"},
5942         {"tx lin"},
5943         {"tx linfail"},
5944         {"cq handler count"},
5945         {"cq handler time"}
5946 };
5947
5948 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5949 {
5950         switch (stringset) {
5951         case ETH_SS_STATS:
5952                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5953         default:
5954                 return -EINVAL;
5955         }
5956 }
5957 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5958
5959 void qeth_core_get_ethtool_stats(struct net_device *dev,
5960                 struct ethtool_stats *stats, u64 *data)
5961 {
5962         struct qeth_card *card = dev->ml_priv;
5963         data[0] = card->stats.rx_packets -
5964                                 card->perf_stats.initial_rx_packets;
5965         data[1] = card->perf_stats.bufs_rec;
5966         data[2] = card->stats.tx_packets -
5967                                 card->perf_stats.initial_tx_packets;
5968         data[3] = card->perf_stats.bufs_sent;
5969         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5970                         - card->perf_stats.skbs_sent_pack;
5971         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5972         data[6] = card->perf_stats.skbs_sent_pack;
5973         data[7] = card->perf_stats.bufs_sent_pack;
5974         data[8] = card->perf_stats.sg_skbs_sent;
5975         data[9] = card->perf_stats.sg_frags_sent;
5976         data[10] = card->perf_stats.sg_skbs_rx;
5977         data[11] = card->perf_stats.sg_frags_rx;
5978         data[12] = card->perf_stats.sg_alloc_page_rx;
5979         data[13] = (card->perf_stats.large_send_bytes >> 10);
5980         data[14] = card->perf_stats.large_send_cnt;
5981         data[15] = card->perf_stats.sc_dp_p;
5982         data[16] = card->perf_stats.sc_p_dp;
5983         data[17] = QETH_LOW_WATERMARK_PACK;
5984         data[18] = QETH_HIGH_WATERMARK_PACK;
5985         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5986         data[20] = (card->qdio.no_out_queues > 1) ?
5987                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5988         data[21] = (card->qdio.no_out_queues > 2) ?
5989                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5990         data[22] = (card->qdio.no_out_queues > 3) ?
5991                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5992         data[23] = card->perf_stats.inbound_time;
5993         data[24] = card->perf_stats.inbound_cnt;
5994         data[25] = card->perf_stats.inbound_do_qdio_time;
5995         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5996         data[27] = card->perf_stats.outbound_handler_time;
5997         data[28] = card->perf_stats.outbound_handler_cnt;
5998         data[29] = card->perf_stats.outbound_time;
5999         data[30] = card->perf_stats.outbound_cnt;
6000         data[31] = card->perf_stats.outbound_do_qdio_time;
6001         data[32] = card->perf_stats.outbound_do_qdio_cnt;
6002         data[33] = card->perf_stats.tx_csum;
6003         data[34] = card->perf_stats.tx_lin;
6004         data[35] = card->perf_stats.tx_linfail;
6005         data[36] = card->perf_stats.cq_cnt;
6006         data[37] = card->perf_stats.cq_time;
6007 }
6008 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6009
6010 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6011 {
6012         switch (stringset) {
6013         case ETH_SS_STATS:
6014                 memcpy(data, &qeth_ethtool_stats_keys,
6015                         sizeof(qeth_ethtool_stats_keys));
6016                 break;
6017         default:
6018                 WARN_ON(1);
6019                 break;
6020         }
6021 }
6022 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6023
6024 void qeth_core_get_drvinfo(struct net_device *dev,
6025                 struct ethtool_drvinfo *info)
6026 {
6027         struct qeth_card *card = dev->ml_priv;
6028
6029         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6030                 sizeof(info->driver));
6031         strlcpy(info->version, "1.0", sizeof(info->version));
6032         strlcpy(info->fw_version, card->info.mcl_level,
6033                 sizeof(info->fw_version));
6034         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6035                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6036 }
6037 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6038
6039 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6040 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
6041 /* Always advertise and support all speeds up to specified, and only one     */
6042 /* specified port type.                                                      */
6043 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6044                                 int maxspeed, int porttype)
6045 {
6046         ethtool_link_ksettings_zero_link_mode(cmd, supported);
6047         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6048         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6049
6050         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6051         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6052
6053         switch (porttype) {
6054         case PORT_TP:
6055                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6056                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6057                 break;
6058         case PORT_FIBRE:
6059                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6060                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6061                 break;
6062         default:
6063                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6064                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6065                 WARN_ON_ONCE(1);
6066         }
6067
6068         /* fallthrough from high to low, to select all legal speeds: */
6069         switch (maxspeed) {
6070         case SPEED_10000:
6071                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6072                                                      10000baseT_Full);
6073                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6074                                                      10000baseT_Full);
6075         case SPEED_1000:
6076                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6077                                                      1000baseT_Full);
6078                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6079                                                      1000baseT_Full);
6080                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6081                                                      1000baseT_Half);
6082                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6083                                                      1000baseT_Half);
6084         case SPEED_100:
6085                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6086                                                      100baseT_Full);
6087                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6088                                                      100baseT_Full);
6089                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6090                                                      100baseT_Half);
6091                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6092                                                      100baseT_Half);
6093         case SPEED_10:
6094                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6095                                                      10baseT_Full);
6096                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6097                                                      10baseT_Full);
6098                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6099                                                      10baseT_Half);
6100                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6101                                                      10baseT_Half);
6102                 /* end fallthrough */
6103                 break;
6104         default:
6105                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6106                                                      10baseT_Full);
6107                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6108                                                      10baseT_Full);
6109                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6110                                                      10baseT_Half);
6111                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6112                                                      10baseT_Half);
6113                 WARN_ON_ONCE(1);
6114         }
6115 }
6116
6117 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6118                 struct ethtool_link_ksettings *cmd)
6119 {
6120         struct qeth_card *card = netdev->ml_priv;
6121         enum qeth_link_types link_type;
6122         struct carrier_info carrier_info;
6123         int rc;
6124
6125         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6126                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6127         else
6128                 link_type = card->info.link_type;
6129
6130         cmd->base.duplex = DUPLEX_FULL;
6131         cmd->base.autoneg = AUTONEG_ENABLE;
6132         cmd->base.phy_address = 0;
6133         cmd->base.mdio_support = 0;
6134         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6135         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6136
6137         switch (link_type) {
6138         case QETH_LINK_TYPE_FAST_ETH:
6139         case QETH_LINK_TYPE_LANE_ETH100:
6140                 cmd->base.speed = SPEED_100;
6141                 cmd->base.port = PORT_TP;
6142                 break;
6143         case QETH_LINK_TYPE_GBIT_ETH:
6144         case QETH_LINK_TYPE_LANE_ETH1000:
6145                 cmd->base.speed = SPEED_1000;
6146                 cmd->base.port = PORT_FIBRE;
6147                 break;
6148         case QETH_LINK_TYPE_10GBIT_ETH:
6149                 cmd->base.speed = SPEED_10000;
6150                 cmd->base.port = PORT_FIBRE;
6151                 break;
6152         default:
6153                 cmd->base.speed = SPEED_10;
6154                 cmd->base.port = PORT_TP;
6155         }
6156         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6157
6158         /* Check if we can obtain more accurate information.     */
6159         /* If QUERY_CARD_INFO command is not supported or fails, */
6160         /* just return the heuristics that was filled above.     */
6161         if (!qeth_card_hw_is_reachable(card))
6162                 return -ENODEV;
6163         rc = qeth_query_card_info(card, &carrier_info);
6164         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6165                 return 0;
6166         if (rc) /* report error from the hardware operation */
6167                 return rc;
6168         /* on success, fill in the information got from the hardware */
6169
6170         netdev_dbg(netdev,
6171         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6172                         carrier_info.card_type,
6173                         carrier_info.port_mode,
6174                         carrier_info.port_speed);
6175
6176         /* Update attributes for which we've obtained more authoritative */
6177         /* information, leave the rest the way they where filled above.  */
6178         switch (carrier_info.card_type) {
6179         case CARD_INFO_TYPE_1G_COPPER_A:
6180         case CARD_INFO_TYPE_1G_COPPER_B:
6181                 cmd->base.port = PORT_TP;
6182                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6183                 break;
6184         case CARD_INFO_TYPE_1G_FIBRE_A:
6185         case CARD_INFO_TYPE_1G_FIBRE_B:
6186                 cmd->base.port = PORT_FIBRE;
6187                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6188                 break;
6189         case CARD_INFO_TYPE_10G_FIBRE_A:
6190         case CARD_INFO_TYPE_10G_FIBRE_B:
6191                 cmd->base.port = PORT_FIBRE;
6192                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6193                 break;
6194         }
6195
6196         switch (carrier_info.port_mode) {
6197         case CARD_INFO_PORTM_FULLDUPLEX:
6198                 cmd->base.duplex = DUPLEX_FULL;
6199                 break;
6200         case CARD_INFO_PORTM_HALFDUPLEX:
6201                 cmd->base.duplex = DUPLEX_HALF;
6202                 break;
6203         }
6204
6205         switch (carrier_info.port_speed) {
6206         case CARD_INFO_PORTS_10M:
6207                 cmd->base.speed = SPEED_10;
6208                 break;
6209         case CARD_INFO_PORTS_100M:
6210                 cmd->base.speed = SPEED_100;
6211                 break;
6212         case CARD_INFO_PORTS_1G:
6213                 cmd->base.speed = SPEED_1000;
6214                 break;
6215         case CARD_INFO_PORTS_10G:
6216                 cmd->base.speed = SPEED_10000;
6217                 break;
6218         }
6219
6220         return 0;
6221 }
6222 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6223
6224 /* Callback to handle checksum offload command reply from OSA card.
6225  * Verify that required features have been enabled on the card.
6226  * Return error in hdr->return_code as this value is checked by caller.
6227  *
6228  * Always returns zero to indicate no further messages from the OSA card.
6229  */
6230 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6231                                         struct qeth_reply *reply,
6232                                         unsigned long data)
6233 {
6234         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6235         struct qeth_checksum_cmd *chksum_cb =
6236                                 (struct qeth_checksum_cmd *)reply->param;
6237
6238         QETH_CARD_TEXT(card, 4, "chkdoccb");
6239         if (cmd->hdr.return_code)
6240                 return 0;
6241
6242         memset(chksum_cb, 0, sizeof(*chksum_cb));
6243         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6244                 chksum_cb->supported =
6245                                 cmd->data.setassparms.data.chksum.supported;
6246                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6247         }
6248         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6249                 chksum_cb->supported =
6250                                 cmd->data.setassparms.data.chksum.supported;
6251                 chksum_cb->enabled =
6252                                 cmd->data.setassparms.data.chksum.enabled;
6253                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6254                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6255         }
6256         return 0;
6257 }
6258
6259 /* Send command to OSA card and check results. */
6260 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6261                                      enum qeth_ipa_funcs ipa_func,
6262                                      __u16 cmd_code, long data,
6263                                      struct qeth_checksum_cmd *chksum_cb)
6264 {
6265         struct qeth_cmd_buffer *iob;
6266         int rc = -ENOMEM;
6267
6268         QETH_CARD_TEXT(card, 4, "chkdocmd");
6269         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6270                                        sizeof(__u32), QETH_PROT_IPV4);
6271         if (iob)
6272                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6273                                            qeth_ipa_checksum_run_cmd_cb,
6274                                            chksum_cb);
6275         return rc;
6276 }
6277
6278 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6279 {
6280         const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6281                                         QETH_IPA_CHECKSUM_UDP |
6282                                         QETH_IPA_CHECKSUM_TCP;
6283         struct qeth_checksum_cmd chksum_cb;
6284         int rc;
6285
6286         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6287                                        &chksum_cb);
6288         if (!rc) {
6289                 if ((required_features & chksum_cb.supported) !=
6290                     required_features)
6291                         rc = -EIO;
6292                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6293                          cstype == IPA_INBOUND_CHECKSUM)
6294                         dev_warn(&card->gdev->dev,
6295                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6296                                  QETH_CARD_IFNAME(card));
6297         }
6298         if (rc) {
6299                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6300                 dev_warn(&card->gdev->dev,
6301                          "Starting HW checksumming for %s failed, using SW checksumming\n",
6302                          QETH_CARD_IFNAME(card));
6303                 return rc;
6304         }
6305         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6306                                        chksum_cb.supported, &chksum_cb);
6307         if (!rc) {
6308                 if ((required_features & chksum_cb.enabled) !=
6309                     required_features)
6310                         rc = -EIO;
6311         }
6312         if (rc) {
6313                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6314                 dev_warn(&card->gdev->dev,
6315                          "Enabling HW checksumming for %s failed, using SW checksumming\n",
6316                          QETH_CARD_IFNAME(card));
6317                 return rc;
6318         }
6319
6320         dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6321                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6322         return 0;
6323 }
6324
6325 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6326 {
6327         int rc = (on) ? qeth_send_checksum_on(card, cstype)
6328                       : qeth_send_simple_setassparms(card, cstype,
6329                                                      IPA_CMD_ASS_STOP, 0);
6330         return rc ? -EIO : 0;
6331 }
6332
6333 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6334 {
6335         int rc;
6336
6337         QETH_CARD_TEXT(card, 3, "sttso");
6338
6339         if (on) {
6340                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6341                                                   IPA_CMD_ASS_START, 0);
6342                 if (rc) {
6343                         dev_warn(&card->gdev->dev,
6344                                  "Starting outbound TCP segmentation offload for %s failed\n",
6345                                  QETH_CARD_IFNAME(card));
6346                         return -EIO;
6347                 }
6348                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6349         } else {
6350                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6351                                                   IPA_CMD_ASS_STOP, 0);
6352         }
6353         return rc;
6354 }
6355
6356 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO)
6357
6358 /**
6359  * qeth_recover_features() - Restore device features after recovery
6360  * @dev:        the recovering net_device
6361  *
6362  * Caller must hold rtnl lock.
6363  */
6364 void qeth_recover_features(struct net_device *dev)
6365 {
6366         netdev_features_t features = dev->features;
6367         struct qeth_card *card = dev->ml_priv;
6368
6369         /* force-off any feature that needs an IPA sequence.
6370          * netdev_update_features() will restart them.
6371          */
6372         dev->features &= ~QETH_HW_FEATURES;
6373         netdev_update_features(dev);
6374
6375         if (features == dev->features)
6376                 return;
6377         dev_warn(&card->gdev->dev,
6378                  "Device recovery failed to restore all offload features\n");
6379 }
6380 EXPORT_SYMBOL_GPL(qeth_recover_features);
6381
6382 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6383 {
6384         struct qeth_card *card = dev->ml_priv;
6385         netdev_features_t changed = dev->features ^ features;
6386         int rc = 0;
6387
6388         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6389         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6390
6391         if ((changed & NETIF_F_IP_CSUM)) {
6392                 rc = qeth_set_ipa_csum(card,
6393                                        features & NETIF_F_IP_CSUM ? 1 : 0,
6394                                        IPA_OUTBOUND_CHECKSUM);
6395                 if (rc)
6396                         changed ^= NETIF_F_IP_CSUM;
6397         }
6398         if ((changed & NETIF_F_RXCSUM)) {
6399                 rc = qeth_set_ipa_csum(card,
6400                                         features & NETIF_F_RXCSUM ? 1 : 0,
6401                                         IPA_INBOUND_CHECKSUM);
6402                 if (rc)
6403                         changed ^= NETIF_F_RXCSUM;
6404         }
6405         if ((changed & NETIF_F_TSO)) {
6406                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6407                 if (rc)
6408                         changed ^= NETIF_F_TSO;
6409         }
6410
6411         /* everything changed successfully? */
6412         if ((dev->features ^ features) == changed)
6413                 return 0;
6414         /* something went wrong. save changed features and return error */
6415         dev->features ^= changed;
6416         return -EIO;
6417 }
6418 EXPORT_SYMBOL_GPL(qeth_set_features);
6419
6420 netdev_features_t qeth_fix_features(struct net_device *dev,
6421                                     netdev_features_t features)
6422 {
6423         struct qeth_card *card = dev->ml_priv;
6424
6425         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6426         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6427                 features &= ~NETIF_F_IP_CSUM;
6428         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6429                 features &= ~NETIF_F_RXCSUM;
6430         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6431                 features &= ~NETIF_F_TSO;
6432         /* if the card isn't up, remove features that require hw changes */
6433         if (card->state == CARD_STATE_DOWN ||
6434             card->state == CARD_STATE_RECOVER)
6435                 features &= ~QETH_HW_FEATURES;
6436         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6437         return features;
6438 }
6439 EXPORT_SYMBOL_GPL(qeth_fix_features);
6440
6441 static int __init qeth_core_init(void)
6442 {
6443         int rc;
6444
6445         pr_info("loading core functions\n");
6446         INIT_LIST_HEAD(&qeth_core_card_list.list);
6447         INIT_LIST_HEAD(&qeth_dbf_list);
6448         rwlock_init(&qeth_core_card_list.rwlock);
6449         mutex_init(&qeth_mod_mutex);
6450
6451         qeth_wq = create_singlethread_workqueue("qeth_wq");
6452
6453         rc = qeth_register_dbf_views();
6454         if (rc)
6455                 goto out_err;
6456         qeth_core_root_dev = root_device_register("qeth");
6457         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6458         if (rc)
6459                 goto register_err;
6460         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6461                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6462         if (!qeth_core_header_cache) {
6463                 rc = -ENOMEM;
6464                 goto slab_err;
6465         }
6466         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6467                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6468         if (!qeth_qdio_outbuf_cache) {
6469                 rc = -ENOMEM;
6470                 goto cqslab_err;
6471         }
6472         rc = ccw_driver_register(&qeth_ccw_driver);
6473         if (rc)
6474                 goto ccw_err;
6475         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6476         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6477         if (rc)
6478                 goto ccwgroup_err;
6479
6480         return 0;
6481
6482 ccwgroup_err:
6483         ccw_driver_unregister(&qeth_ccw_driver);
6484 ccw_err:
6485         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6486 cqslab_err:
6487         kmem_cache_destroy(qeth_core_header_cache);
6488 slab_err:
6489         root_device_unregister(qeth_core_root_dev);
6490 register_err:
6491         qeth_unregister_dbf_views();
6492 out_err:
6493         pr_err("Initializing the qeth device driver failed\n");
6494         return rc;
6495 }
6496
6497 static void __exit qeth_core_exit(void)
6498 {
6499         qeth_clear_dbf_list();
6500         destroy_workqueue(qeth_wq);
6501         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6502         ccw_driver_unregister(&qeth_ccw_driver);
6503         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6504         kmem_cache_destroy(qeth_core_header_cache);
6505         root_device_unregister(qeth_core_root_dev);
6506         qeth_unregister_dbf_views();
6507         pr_info("core functions removed\n");
6508 }
6509
6510 module_init(qeth_core_init);
6511 module_exit(qeth_core_exit);
6512 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6513 MODULE_DESCRIPTION("qeth core functions");
6514 MODULE_LICENSE("GPL");