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
  24 #include <asm/ebcdic.h>
  25 #include <asm/io.h>
  26 #include <asm/sysinfo.h>
  27 #include <asm/compat.h>
  28
  29 #include "qeth_core.h"
  30
  31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  33         /*                   N  P  A    M  L  V                      H  */
  34         [QETH_DBF_SETUP] = {"qeth_setup",
  35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_MSG]   = {"qeth_msg",
  37                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  38         [QETH_DBF_CTRL]  = {"qeth_control",
  39                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  40 };
  41 EXPORT_SYMBOL_GPL(qeth_dbf);
  42
  43 struct qeth_card_list_struct qeth_core_card_list;
  44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  45 struct kmem_cache *qeth_core_header_cache;
  46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  47 static struct kmem_cache *qeth_qdio_outbuf_cache;
  48
  49 static struct device *qeth_core_root_dev;
  50 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  51 static struct lock_class_key qdio_out_skb_queue_key;
  52 static struct mutex qeth_mod_mutex;
  53
  54 static void qeth_send_control_data_cb(struct qeth_channel *,
  55                         struct qeth_cmd_buffer *);
  56 static int qeth_issue_next_read(struct qeth_card *);
  57 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  58 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  59 static void qeth_free_buffer_pool(struct qeth_card *);
  60 static int qeth_qdio_establish(struct qeth_card *);
  61 static void qeth_free_qdio_buffers(struct qeth_card *);
  62 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  63                 struct qeth_qdio_out_buffer *buf,
  64                 enum iucv_tx_notify notification);
  65 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  66 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  67                 struct qeth_qdio_out_buffer *buf,
  68                 enum qeth_qdio_buffer_states newbufstate);
  69 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  70
  71 static struct workqueue_struct *qeth_wq;
  72
  73 static void qeth_close_dev_handler(struct work_struct *work)
  74 {
  75         struct qeth_card *card;
  76
  77         card = container_of(work, struct qeth_card, close_dev_work);
  78         QETH_CARD_TEXT(card, 2, "cldevhdl");
  79         rtnl_lock();
  80         dev_close(card->dev);
  81         rtnl_unlock();
  82         ccwgroup_set_offline(card->gdev);
  83 }
  84
  85 void qeth_close_dev(struct qeth_card *card)
  86 {
  87         QETH_CARD_TEXT(card, 2, "cldevsubm");
  88         queue_work(qeth_wq, &card->close_dev_work);
  89 }
  90 EXPORT_SYMBOL_GPL(qeth_close_dev);
  91
  92 static inline const char *qeth_get_cardname(struct qeth_card *card)
  93 {
  94         if (card->info.guestlan) {
  95                 switch (card->info.type) {
  96                 case QETH_CARD_TYPE_OSD:
  97                         return " Virtual NIC QDIO";
  98                 case QETH_CARD_TYPE_IQD:
  99                         return " Virtual NIC Hiper";
 100                 case QETH_CARD_TYPE_OSM:
 101                         return " Virtual NIC QDIO - OSM";
 102                 case QETH_CARD_TYPE_OSX:
 103                         return " Virtual NIC QDIO - OSX";
 104                 default:
 105                         return " unknown";
 106                 }
 107         } else {
 108                 switch (card->info.type) {
 109                 case QETH_CARD_TYPE_OSD:
 110                         return " OSD Express";
 111                 case QETH_CARD_TYPE_IQD:
 112                         return " HiperSockets";
 113                 case QETH_CARD_TYPE_OSN:
 114                         return " OSN QDIO";
 115                 case QETH_CARD_TYPE_OSM:
 116                         return " OSM QDIO";
 117                 case QETH_CARD_TYPE_OSX:
 118                         return " OSX QDIO";
 119                 default:
 120                         return " unknown";
 121                 }
 122         }
 123         return " n/a";
 124 }
 125
 126 /* max length to be returned: 14 */
 127 const char *qeth_get_cardname_short(struct qeth_card *card)
 128 {
 129         if (card->info.guestlan) {
 130                 switch (card->info.type) {
 131                 case QETH_CARD_TYPE_OSD:
 132                         return "Virt.NIC QDIO";
 133                 case QETH_CARD_TYPE_IQD:
 134                         return "Virt.NIC Hiper";
 135                 case QETH_CARD_TYPE_OSM:
 136                         return "Virt.NIC OSM";
 137                 case QETH_CARD_TYPE_OSX:
 138                         return "Virt.NIC OSX";
 139                 default:
 140                         return "unknown";
 141                 }
 142         } else {
 143                 switch (card->info.type) {
 144                 case QETH_CARD_TYPE_OSD:
 145                         switch (card->info.link_type) {
 146                         case QETH_LINK_TYPE_FAST_ETH:
 147                                 return "OSD_100";
 148                         case QETH_LINK_TYPE_HSTR:
 149                                 return "HSTR";
 150                         case QETH_LINK_TYPE_GBIT_ETH:
 151                                 return "OSD_1000";
 152                         case QETH_LINK_TYPE_10GBIT_ETH:
 153                                 return "OSD_10GIG";
 154                         case QETH_LINK_TYPE_LANE_ETH100:
 155                                 return "OSD_FE_LANE";
 156                         case QETH_LINK_TYPE_LANE_TR:
 157                                 return "OSD_TR_LANE";
 158                         case QETH_LINK_TYPE_LANE_ETH1000:
 159                                 return "OSD_GbE_LANE";
 160                         case QETH_LINK_TYPE_LANE:
 161                                 return "OSD_ATM_LANE";
 162                         default:
 163                                 return "OSD_Express";
 164                         }
 165                 case QETH_CARD_TYPE_IQD:
 166                         return "HiperSockets";
 167                 case QETH_CARD_TYPE_OSN:
 168                         return "OSN";
 169                 case QETH_CARD_TYPE_OSM:
 170                         return "OSM_1000";
 171                 case QETH_CARD_TYPE_OSX:
 172                         return "OSX_10GIG";
 173                 default:
 174                         return "unknown";
 175                 }
 176         }
 177         return "n/a";
 178 }
 179
 180 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 181                          int clear_start_mask)
 182 {
 183         unsigned long flags;
 184
 185         spin_lock_irqsave(&card->thread_mask_lock, flags);
 186         card->thread_allowed_mask = threads;
 187         if (clear_start_mask)
 188                 card->thread_start_mask &= threads;
 189         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 190         wake_up(&card->wait_q);
 191 }
 192 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 193
 194 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 195 {
 196         unsigned long flags;
 197         int rc = 0;
 198
 199         spin_lock_irqsave(&card->thread_mask_lock, flags);
 200         rc = (card->thread_running_mask & threads);
 201         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 202         return rc;
 203 }
 204 EXPORT_SYMBOL_GPL(qeth_threads_running);
 205
 206 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 207 {
 208         return wait_event_interruptible(card->wait_q,
 209                         qeth_threads_running(card, threads) == 0);
 210 }
 211 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 212
 213 void qeth_clear_working_pool_list(struct qeth_card *card)
 214 {
 215         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 216
 217         QETH_CARD_TEXT(card, 5, "clwrklst");
 218         list_for_each_entry_safe(pool_entry, tmp,
 219                             &card->qdio.in_buf_pool.entry_list, list){
 220                         list_del(&pool_entry->list);
 221         }
 222 }
 223 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 224
 225 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 226 {
 227         struct qeth_buffer_pool_entry *pool_entry;
 228         void *ptr;
 229         int i, j;
 230
 231         QETH_CARD_TEXT(card, 5, "alocpool");
 232         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 233                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 234                 if (!pool_entry) {
 235                         qeth_free_buffer_pool(card);
 236                         return -ENOMEM;
 237                 }
 238                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 239                         ptr = (void *) __get_free_page(GFP_KERNEL);
 240                         if (!ptr) {
 241                                 while (j > 0)
 242                                         free_page((unsigned long)
 243                                                   pool_entry->elements[--j]);
 244                                 kfree(pool_entry);
 245                                 qeth_free_buffer_pool(card);
 246                                 return -ENOMEM;
 247                         }
 248                         pool_entry->elements[j] = ptr;
 249                 }
 250                 list_add(&pool_entry->init_list,
 251                          &card->qdio.init_pool.entry_list);
 252         }
 253         return 0;
 254 }
 255
 256 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 257 {
 258         QETH_CARD_TEXT(card, 2, "realcbp");
 259
 260         if ((card->state != CARD_STATE_DOWN) &&
 261             (card->state != CARD_STATE_RECOVER))
 262                 return -EPERM;
 263
 264         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 265         qeth_clear_working_pool_list(card);
 266         qeth_free_buffer_pool(card);
 267         card->qdio.in_buf_pool.buf_count = bufcnt;
 268         card->qdio.init_pool.buf_count = bufcnt;
 269         return qeth_alloc_buffer_pool(card);
 270 }
 271 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 272
 273 static inline int qeth_cq_init(struct qeth_card *card)
 274 {
 275         int rc;
 276
 277         if (card->options.cq == QETH_CQ_ENABLED) {
 278                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 279                 memset(card->qdio.c_q->qdio_bufs, 0,
 280                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
 281                 card->qdio.c_q->next_buf_to_init = 127;
 282                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 283                              card->qdio.no_in_queues - 1, 0,
 284                              127);
 285                 if (rc) {
 286                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 287                         goto out;
 288                 }
 289         }
 290         rc = 0;
 291 out:
 292         return rc;
 293 }
 294
 295 static inline int qeth_alloc_cq(struct qeth_card *card)
 296 {
 297         int rc;
 298
 299         if (card->options.cq == QETH_CQ_ENABLED) {
 300                 int i;
 301                 struct qdio_outbuf_state *outbuf_states;
 302
 303                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 304                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
 305                                          GFP_KERNEL);
 306                 if (!card->qdio.c_q) {
 307                         rc = -1;
 308                         goto kmsg_out;
 309                 }
 310                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
 311
 312                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
 313                         card->qdio.c_q->bufs[i].buffer =
 314                                 &card->qdio.c_q->qdio_bufs[i];
 315                 }
 316
 317                 card->qdio.no_in_queues = 2;
 318
 319                 card->qdio.out_bufstates = (struct qdio_outbuf_state *)
 320                         kzalloc(card->qdio.no_out_queues *
 321                                 QDIO_MAX_BUFFERS_PER_Q *
 322                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 323                 outbuf_states = card->qdio.out_bufstates;
 324                 if (outbuf_states == NULL) {
 325                         rc = -1;
 326                         goto free_cq_out;
 327                 }
 328                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 329                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 330                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 331                 }
 332         } else {
 333                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 334                 card->qdio.c_q = NULL;
 335                 card->qdio.no_in_queues = 1;
 336         }
 337         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 338         rc = 0;
 339 out:
 340         return rc;
 341 free_cq_out:
 342         kfree(card->qdio.c_q);
 343         card->qdio.c_q = NULL;
 344 kmsg_out:
 345         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 346         goto out;
 347 }
 348
 349 static inline void qeth_free_cq(struct qeth_card *card)
 350 {
 351         if (card->qdio.c_q) {
 352                 --card->qdio.no_in_queues;
 353                 kfree(card->qdio.c_q);
 354                 card->qdio.c_q = NULL;
 355         }
 356         kfree(card->qdio.out_bufstates);
 357         card->qdio.out_bufstates = NULL;
 358 }
 359
 360 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 361         int delayed) {
 362         enum iucv_tx_notify n;
 363
 364         switch (sbalf15) {
 365         case 0:
 366                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 367                 break;
 368         case 4:
 369         case 16:
 370         case 17:
 371         case 18:
 372                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 373                         TX_NOTIFY_UNREACHABLE;
 374                 break;
 375         default:
 376                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 377                         TX_NOTIFY_GENERALERROR;
 378                 break;
 379         }
 380
 381         return n;
 382 }
 383
 384 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 385         int bidx, int forced_cleanup)
 386 {
 387         if (q->card->options.cq != QETH_CQ_ENABLED)
 388                 return;
 389
 390         if (q->bufs[bidx]->next_pending != NULL) {
 391                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 392                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 393
 394                 while (c) {
 395                         if (forced_cleanup ||
 396                             atomic_read(&c->state) ==
 397                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 398                                 struct qeth_qdio_out_buffer *f = c;
 399                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 400                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 401                                 /* release here to avoid interleaving between
 402                                    outbound tasklet and inbound tasklet
 403                                    regarding notifications and lifecycle */
 404                                 qeth_release_skbs(c);
 405
 406                                 c = f->next_pending;
 407                                 WARN_ON_ONCE(head->next_pending != f);
 408                                 head->next_pending = c;
 409                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 410                         } else {
 411                                 head = c;
 412                                 c = c->next_pending;
 413                         }
 414
 415                 }
 416         }
 417         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 418                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 419                 /* for recovery situations */
 420                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 421                 qeth_init_qdio_out_buf(q, bidx);
 422                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 423         }
 424 }
 425
 426
 427 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 428                 unsigned long phys_aob_addr) {
 429         struct qaob *aob;
 430         struct qeth_qdio_out_buffer *buffer;
 431         enum iucv_tx_notify notification;
 432
 433         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 434         QETH_CARD_TEXT(card, 5, "haob");
 435         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 436         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 437         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 438
 439         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 440                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 441                 notification = TX_NOTIFY_OK;
 442         } else {
 443                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 444                                                         QETH_QDIO_BUF_PENDING);
 445                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 446                 notification = TX_NOTIFY_DELAYED_OK;
 447         }
 448
 449         if (aob->aorc != 0)  {
 450                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 451                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 452         }
 453         qeth_notify_skbs(buffer->q, buffer, notification);
 454
 455         buffer->aob = NULL;
 456         qeth_clear_output_buffer(buffer->q, buffer,
 457                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 458
 459         /* from here on: do not touch buffer anymore */
 460         qdio_release_aob(aob);
 461 }
 462
 463 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 464 {
 465         return card->options.cq == QETH_CQ_ENABLED &&
 466             card->qdio.c_q != NULL &&
 467             queue != 0 &&
 468             queue == card->qdio.no_in_queues - 1;
 469 }
 470
 471
 472 static int qeth_issue_next_read(struct qeth_card *card)
 473 {
 474         int rc;
 475         struct qeth_cmd_buffer *iob;
 476
 477         QETH_CARD_TEXT(card, 5, "issnxrd");
 478         if (card->read.state != CH_STATE_UP)
 479                 return -EIO;
 480         iob = qeth_get_buffer(&card->read);
 481         if (!iob) {
 482                 dev_warn(&card->gdev->dev, "The qeth device driver "
 483                         "failed to recover an error on the device\n");
 484                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 485                         "available\n", dev_name(&card->gdev->dev));
 486                 return -ENOMEM;
 487         }
 488         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 489         QETH_CARD_TEXT(card, 6, "noirqpnd");
 490         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 491                               (addr_t) iob, 0, 0);
 492         if (rc) {
 493                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 494                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 495                 atomic_set(&card->read.irq_pending, 0);
 496                 card->read_or_write_problem = 1;
 497                 qeth_schedule_recovery(card);
 498                 wake_up(&card->wait_q);
 499         }
 500         return rc;
 501 }
 502
 503 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 504 {
 505         struct qeth_reply *reply;
 506
 507         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 508         if (reply) {
 509                 atomic_set(&reply->refcnt, 1);
 510                 atomic_set(&reply->received, 0);
 511                 reply->card = card;
 512         }
 513         return reply;
 514 }
 515
 516 static void qeth_get_reply(struct qeth_reply *reply)
 517 {
 518         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 519         atomic_inc(&reply->refcnt);
 520 }
 521
 522 static void qeth_put_reply(struct qeth_reply *reply)
 523 {
 524         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 525         if (atomic_dec_and_test(&reply->refcnt))
 526                 kfree(reply);
 527 }
 528
 529 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 530                 struct qeth_card *card)
 531 {
 532         char *ipa_name;
 533         int com = cmd->hdr.command;
 534         ipa_name = qeth_get_ipa_cmd_name(com);
 535         if (rc)
 536                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 537                                 "x%X \"%s\"\n",
 538                                 ipa_name, com, dev_name(&card->gdev->dev),
 539                                 QETH_CARD_IFNAME(card), rc,
 540                                 qeth_get_ipa_msg(rc));
 541         else
 542                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 543                                 ipa_name, com, dev_name(&card->gdev->dev),
 544                                 QETH_CARD_IFNAME(card));
 545 }
 546
 547 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 548                 struct qeth_cmd_buffer *iob)
 549 {
 550         struct qeth_ipa_cmd *cmd = NULL;
 551
 552         QETH_CARD_TEXT(card, 5, "chkipad");
 553         if (IS_IPA(iob->data)) {
 554                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 555                 if (IS_IPA_REPLY(cmd)) {
 556                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 557                             cmd->hdr.command != IPA_CMD_DELCCID &&
 558                             cmd->hdr.command != IPA_CMD_MODCCID &&
 559                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 560                                 qeth_issue_ipa_msg(cmd,
 561                                                 cmd->hdr.return_code, card);
 562                         return cmd;
 563                 } else {
 564                         switch (cmd->hdr.command) {
 565                         case IPA_CMD_STOPLAN:
 566                                 if (cmd->hdr.return_code ==
 567                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 568                                         dev_err(&card->gdev->dev,
 569                                            "Interface %s is down because the "
 570                                            "adjacent port is no longer in "
 571                                            "reflective relay mode\n",
 572                                            QETH_CARD_IFNAME(card));
 573                                         qeth_close_dev(card);
 574                                 } else {
 575                                         dev_warn(&card->gdev->dev,
 576                                            "The link for interface %s on CHPID"
 577                                            " 0x%X failed\n",
 578                                            QETH_CARD_IFNAME(card),
 579                                            card->info.chpid);
 580                                         qeth_issue_ipa_msg(cmd,
 581                                                 cmd->hdr.return_code, card);
 582                                 }
 583                                 card->lan_online = 0;
 584                                 if (card->dev && netif_carrier_ok(card->dev))
 585                                         netif_carrier_off(card->dev);
 586                                 return NULL;
 587                         case IPA_CMD_STARTLAN:
 588                                 dev_info(&card->gdev->dev,
 589                                            "The link for %s on CHPID 0x%X has"
 590                                            " been restored\n",
 591                                            QETH_CARD_IFNAME(card),
 592                                            card->info.chpid);
 593                                 netif_carrier_on(card->dev);
 594                                 card->lan_online = 1;
 595                                 if (card->info.hwtrap)
 596                                         card->info.hwtrap = 2;
 597                                 qeth_schedule_recovery(card);
 598                                 return NULL;
 599                         case IPA_CMD_MODCCID:
 600                                 return cmd;
 601                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 602                                 QETH_CARD_TEXT(card, 3, "irla");
 603                                 break;
 604                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 605                                 QETH_CARD_TEXT(card, 3, "urla");
 606                                 break;
 607                         default:
 608                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 609                                            "but not a reply!\n");
 610                                 break;
 611                         }
 612                 }
 613         }
 614         return cmd;
 615 }
 616
 617 void qeth_clear_ipacmd_list(struct qeth_card *card)
 618 {
 619         struct qeth_reply *reply, *r;
 620         unsigned long flags;
 621
 622         QETH_CARD_TEXT(card, 4, "clipalst");
 623
 624         spin_lock_irqsave(&card->lock, flags);
 625         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 626                 qeth_get_reply(reply);
 627                 reply->rc = -EIO;
 628                 atomic_inc(&reply->received);
 629                 list_del_init(&reply->list);
 630                 wake_up(&reply->wait_q);
 631                 qeth_put_reply(reply);
 632         }
 633         spin_unlock_irqrestore(&card->lock, flags);
 634         atomic_set(&card->write.irq_pending, 0);
 635 }
 636 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 637
 638 static int qeth_check_idx_response(struct qeth_card *card,
 639         unsigned char *buffer)
 640 {
 641         if (!buffer)
 642                 return 0;
 643
 644         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 645         if ((buffer[2] & 0xc0) == 0xc0) {
 646                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 647                            "with cause code 0x%02x%s\n",
 648                            buffer[4],
 649                            ((buffer[4] == 0x22) ?
 650                             " -- try another portname" : ""));
 651                 QETH_CARD_TEXT(card, 2, "ckidxres");
 652                 QETH_CARD_TEXT(card, 2, " idxterm");
 653                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 654                 if (buffer[4] == 0xf6) {
 655                         dev_err(&card->gdev->dev,
 656                         "The qeth device is not configured "
 657                         "for the OSI layer required by z/VM\n");
 658                         return -EPERM;
 659                 }
 660                 return -EIO;
 661         }
 662         return 0;
 663 }
 664
 665 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 666                 __u32 len)
 667 {
 668         struct qeth_card *card;
 669
 670         card = CARD_FROM_CDEV(channel->ccwdev);
 671         QETH_CARD_TEXT(card, 4, "setupccw");
 672         if (channel == &card->read)
 673                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 674         else
 675                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 676         channel->ccw.count = len;
 677         channel->ccw.cda = (__u32) __pa(iob);
 678 }
 679
 680 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 681 {
 682         __u8 index;
 683
 684         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 685         index = channel->io_buf_no;
 686         do {
 687                 if (channel->iob[index].state == BUF_STATE_FREE) {
 688                         channel->iob[index].state = BUF_STATE_LOCKED;
 689                         channel->io_buf_no = (channel->io_buf_no + 1) %
 690                                 QETH_CMD_BUFFER_NO;
 691                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 692                         return channel->iob + index;
 693                 }
 694                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 695         } while (index != channel->io_buf_no);
 696
 697         return NULL;
 698 }
 699
 700 void qeth_release_buffer(struct qeth_channel *channel,
 701                 struct qeth_cmd_buffer *iob)
 702 {
 703         unsigned long flags;
 704
 705         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 706         spin_lock_irqsave(&channel->iob_lock, flags);
 707         memset(iob->data, 0, QETH_BUFSIZE);
 708         iob->state = BUF_STATE_FREE;
 709         iob->callback = qeth_send_control_data_cb;
 710         iob->rc = 0;
 711         spin_unlock_irqrestore(&channel->iob_lock, flags);
 712         wake_up(&channel->wait_q);
 713 }
 714 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 715
 716 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 717 {
 718         struct qeth_cmd_buffer *buffer = NULL;
 719         unsigned long flags;
 720
 721         spin_lock_irqsave(&channel->iob_lock, flags);
 722         buffer = __qeth_get_buffer(channel);
 723         spin_unlock_irqrestore(&channel->iob_lock, flags);
 724         return buffer;
 725 }
 726
 727 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 728 {
 729         struct qeth_cmd_buffer *buffer;
 730         wait_event(channel->wait_q,
 731                    ((buffer = qeth_get_buffer(channel)) != NULL));
 732         return buffer;
 733 }
 734 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 735
 736 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 737 {
 738         int cnt;
 739
 740         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 741                 qeth_release_buffer(channel, &channel->iob[cnt]);
 742         channel->buf_no = 0;
 743         channel->io_buf_no = 0;
 744 }
 745 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 746
 747 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 748                   struct qeth_cmd_buffer *iob)
 749 {
 750         struct qeth_card *card;
 751         struct qeth_reply *reply, *r;
 752         struct qeth_ipa_cmd *cmd;
 753         unsigned long flags;
 754         int keep_reply;
 755         int rc = 0;
 756
 757         card = CARD_FROM_CDEV(channel->ccwdev);
 758         QETH_CARD_TEXT(card, 4, "sndctlcb");
 759         rc = qeth_check_idx_response(card, iob->data);
 760         switch (rc) {
 761         case 0:
 762                 break;
 763         case -EIO:
 764                 qeth_clear_ipacmd_list(card);
 765                 qeth_schedule_recovery(card);
 766                 /* fall through */
 767         default:
 768                 goto out;
 769         }
 770
 771         cmd = qeth_check_ipa_data(card, iob);
 772         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 773                 goto out;
 774         /*in case of OSN : check if cmd is set */
 775         if (card->info.type == QETH_CARD_TYPE_OSN &&
 776             cmd &&
 777             cmd->hdr.command != IPA_CMD_STARTLAN &&
 778             card->osn_info.assist_cb != NULL) {
 779                 card->osn_info.assist_cb(card->dev, cmd);
 780                 goto out;
 781         }
 782
 783         spin_lock_irqsave(&card->lock, flags);
 784         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 785                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 786                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 787                         qeth_get_reply(reply);
 788                         list_del_init(&reply->list);
 789                         spin_unlock_irqrestore(&card->lock, flags);
 790                         keep_reply = 0;
 791                         if (reply->callback != NULL) {
 792                                 if (cmd) {
 793                                         reply->offset = (__u16)((char *)cmd -
 794                                                         (char *)iob->data);
 795                                         keep_reply = reply->callback(card,
 796                                                         reply,
 797                                                         (unsigned long)cmd);
 798                                 } else
 799                                         keep_reply = reply->callback(card,
 800                                                         reply,
 801                                                         (unsigned long)iob);
 802                         }
 803                         if (cmd)
 804                                 reply->rc = (u16) cmd->hdr.return_code;
 805                         else if (iob->rc)
 806                                 reply->rc = iob->rc;
 807                         if (keep_reply) {
 808                                 spin_lock_irqsave(&card->lock, flags);
 809                                 list_add_tail(&reply->list,
 810                                               &card->cmd_waiter_list);
 811                                 spin_unlock_irqrestore(&card->lock, flags);
 812                         } else {
 813                                 atomic_inc(&reply->received);
 814                                 wake_up(&reply->wait_q);
 815                         }
 816                         qeth_put_reply(reply);
 817                         goto out;
 818                 }
 819         }
 820         spin_unlock_irqrestore(&card->lock, flags);
 821 out:
 822         memcpy(&card->seqno.pdu_hdr_ack,
 823                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 824                 QETH_SEQ_NO_LENGTH);
 825         qeth_release_buffer(channel, iob);
 826 }
 827
 828 static int qeth_setup_channel(struct qeth_channel *channel)
 829 {
 830         int cnt;
 831
 832         QETH_DBF_TEXT(SETUP, 2, "setupch");
 833         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 834                 channel->iob[cnt].data =
 835                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 836                 if (channel->iob[cnt].data == NULL)
 837                         break;
 838                 channel->iob[cnt].state = BUF_STATE_FREE;
 839                 channel->iob[cnt].channel = channel;
 840                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 841                 channel->iob[cnt].rc = 0;
 842         }
 843         if (cnt < QETH_CMD_BUFFER_NO) {
 844                 while (cnt-- > 0)
 845                         kfree(channel->iob[cnt].data);
 846                 return -ENOMEM;
 847         }
 848         channel->buf_no = 0;
 849         channel->io_buf_no = 0;
 850         atomic_set(&channel->irq_pending, 0);
 851         spin_lock_init(&channel->iob_lock);
 852
 853         init_waitqueue_head(&channel->wait_q);
 854         return 0;
 855 }
 856
 857 static int qeth_set_thread_start_bit(struct qeth_card *card,
 858                 unsigned long thread)
 859 {
 860         unsigned long flags;
 861
 862         spin_lock_irqsave(&card->thread_mask_lock, flags);
 863         if (!(card->thread_allowed_mask & thread) ||
 864               (card->thread_start_mask & thread)) {
 865                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 866                 return -EPERM;
 867         }
 868         card->thread_start_mask |= thread;
 869         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 870         return 0;
 871 }
 872
 873 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 874 {
 875         unsigned long flags;
 876
 877         spin_lock_irqsave(&card->thread_mask_lock, flags);
 878         card->thread_start_mask &= ~thread;
 879         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 880         wake_up(&card->wait_q);
 881 }
 882 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 883
 884 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 885 {
 886         unsigned long flags;
 887
 888         spin_lock_irqsave(&card->thread_mask_lock, flags);
 889         card->thread_running_mask &= ~thread;
 890         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 891         wake_up(&card->wait_q);
 892 }
 893 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 894
 895 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 896 {
 897         unsigned long flags;
 898         int rc = 0;
 899
 900         spin_lock_irqsave(&card->thread_mask_lock, flags);
 901         if (card->thread_start_mask & thread) {
 902                 if ((card->thread_allowed_mask & thread) &&
 903                     !(card->thread_running_mask & thread)) {
 904                         rc = 1;
 905                         card->thread_start_mask &= ~thread;
 906                         card->thread_running_mask |= thread;
 907                 } else
 908                         rc = -EPERM;
 909         }
 910         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 911         return rc;
 912 }
 913
 914 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 915 {
 916         int rc = 0;
 917
 918         wait_event(card->wait_q,
 919                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 920         return rc;
 921 }
 922 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 923
 924 void qeth_schedule_recovery(struct qeth_card *card)
 925 {
 926         QETH_CARD_TEXT(card, 2, "startrec");
 927         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 928                 schedule_work(&card->kernel_thread_starter);
 929 }
 930 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 931
 932 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 933 {
 934         int dstat, cstat;
 935         char *sense;
 936         struct qeth_card *card;
 937
 938         sense = (char *) irb->ecw;
 939         cstat = irb->scsw.cmd.cstat;
 940         dstat = irb->scsw.cmd.dstat;
 941         card = CARD_FROM_CDEV(cdev);
 942
 943         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 944                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 945                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 946                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 947                 dev_warn(&cdev->dev, "The qeth device driver "
 948                         "failed to recover an error on the device\n");
 949                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 950                         dev_name(&cdev->dev), dstat, cstat);
 951                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 952                                 16, 1, irb, 64, 1);
 953                 return 1;
 954         }
 955
 956         if (dstat & DEV_STAT_UNIT_CHECK) {
 957                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 958                     SENSE_RESETTING_EVENT_FLAG) {
 959                         QETH_CARD_TEXT(card, 2, "REVIND");
 960                         return 1;
 961                 }
 962                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 963                     SENSE_COMMAND_REJECT_FLAG) {
 964                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 965                         return 1;
 966                 }
 967                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 968                         QETH_CARD_TEXT(card, 2, "AFFE");
 969                         return 1;
 970                 }
 971                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 972                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 973                         return 0;
 974                 }
 975                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 976                         return 1;
 977         }
 978         return 0;
 979 }
 980
 981 static long __qeth_check_irb_error(struct ccw_device *cdev,
 982                 unsigned long intparm, struct irb *irb)
 983 {
 984         struct qeth_card *card;
 985
 986         card = CARD_FROM_CDEV(cdev);
 987
 988         if (!IS_ERR(irb))
 989                 return 0;
 990
 991         switch (PTR_ERR(irb)) {
 992         case -EIO:
 993                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 994                         dev_name(&cdev->dev));
 995                 QETH_CARD_TEXT(card, 2, "ckirberr");
 996                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 997                 break;
 998         case -ETIMEDOUT:
 999                 dev_warn(&cdev->dev, "A hardware operation timed out"
1000                         " on the device\n");
1001                 QETH_CARD_TEXT(card, 2, "ckirberr");
1002                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1003                 if (intparm == QETH_RCD_PARM) {
1004                         if (card && (card->data.ccwdev == cdev)) {
1005                                 card->data.state = CH_STATE_DOWN;
1006                                 wake_up(&card->wait_q);
1007                         }
1008                 }
1009                 break;
1010         default:
1011                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1012                         dev_name(&cdev->dev), PTR_ERR(irb));
1013                 QETH_CARD_TEXT(card, 2, "ckirberr");
1014                 QETH_CARD_TEXT(card, 2, "  rc???");
1015         }
1016         return PTR_ERR(irb);
1017 }
1018
1019 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1020                 struct irb *irb)
1021 {
1022         int rc;
1023         int cstat, dstat;
1024         struct qeth_cmd_buffer *buffer;
1025         struct qeth_channel *channel;
1026         struct qeth_card *card;
1027         struct qeth_cmd_buffer *iob;
1028         __u8 index;
1029
1030         if (__qeth_check_irb_error(cdev, intparm, irb))
1031                 return;
1032         cstat = irb->scsw.cmd.cstat;
1033         dstat = irb->scsw.cmd.dstat;
1034
1035         card = CARD_FROM_CDEV(cdev);
1036         if (!card)
1037                 return;
1038
1039         QETH_CARD_TEXT(card, 5, "irq");
1040
1041         if (card->read.ccwdev == cdev) {
1042                 channel = &card->read;
1043                 QETH_CARD_TEXT(card, 5, "read");
1044         } else if (card->write.ccwdev == cdev) {
1045                 channel = &card->write;
1046                 QETH_CARD_TEXT(card, 5, "write");
1047         } else {
1048                 channel = &card->data;
1049                 QETH_CARD_TEXT(card, 5, "data");
1050         }
1051         atomic_set(&channel->irq_pending, 0);
1052
1053         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1054                 channel->state = CH_STATE_STOPPED;
1055
1056         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1057                 channel->state = CH_STATE_HALTED;
1058
1059         /*let's wake up immediately on data channel*/
1060         if ((channel == &card->data) && (intparm != 0) &&
1061             (intparm != QETH_RCD_PARM))
1062                 goto out;
1063
1064         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1065                 QETH_CARD_TEXT(card, 6, "clrchpar");
1066                 /* we don't have to handle this further */
1067                 intparm = 0;
1068         }
1069         if (intparm == QETH_HALT_CHANNEL_PARM) {
1070                 QETH_CARD_TEXT(card, 6, "hltchpar");
1071                 /* we don't have to handle this further */
1072                 intparm = 0;
1073         }
1074         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1075             (dstat & DEV_STAT_UNIT_CHECK) ||
1076             (cstat)) {
1077                 if (irb->esw.esw0.erw.cons) {
1078                         dev_warn(&channel->ccwdev->dev,
1079                                 "The qeth device driver failed to recover "
1080                                 "an error on the device\n");
1081                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1082                                 "0x%X dstat 0x%X\n",
1083                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1084                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1085                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1086                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1087                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1088                 }
1089                 if (intparm == QETH_RCD_PARM) {
1090                         channel->state = CH_STATE_DOWN;
1091                         goto out;
1092                 }
1093                 rc = qeth_get_problem(cdev, irb);
1094                 if (rc) {
1095                         qeth_clear_ipacmd_list(card);
1096                         qeth_schedule_recovery(card);
1097                         goto out;
1098                 }
1099         }
1100
1101         if (intparm == QETH_RCD_PARM) {
1102                 channel->state = CH_STATE_RCD_DONE;
1103                 goto out;
1104         }
1105         if (intparm) {
1106                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1107                 buffer->state = BUF_STATE_PROCESSED;
1108         }
1109         if (channel == &card->data)
1110                 return;
1111         if (channel == &card->read &&
1112             channel->state == CH_STATE_UP)
1113                 qeth_issue_next_read(card);
1114
1115         iob = channel->iob;
1116         index = channel->buf_no;
1117         while (iob[index].state == BUF_STATE_PROCESSED) {
1118                 if (iob[index].callback != NULL)
1119                         iob[index].callback(channel, iob + index);
1120
1121                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1122         }
1123         channel->buf_no = index;
1124 out:
1125         wake_up(&card->wait_q);
1126         return;
1127 }
1128
1129 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1130                 struct qeth_qdio_out_buffer *buf,
1131                 enum iucv_tx_notify notification)
1132 {
1133         struct sk_buff *skb;
1134
1135         if (skb_queue_empty(&buf->skb_list))
1136                 goto out;
1137         skb = skb_peek(&buf->skb_list);
1138         while (skb) {
1139                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1140                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1141                 if (skb->protocol == ETH_P_AF_IUCV) {
1142                         if (skb->sk) {
1143                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1144                                 iucv->sk_txnotify(skb, notification);
1145                         }
1146                 }
1147                 if (skb_queue_is_last(&buf->skb_list, skb))
1148                         skb = NULL;
1149                 else
1150                         skb = skb_queue_next(&buf->skb_list, skb);
1151         }
1152 out:
1153         return;
1154 }
1155
1156 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1157 {
1158         struct sk_buff *skb;
1159         struct iucv_sock *iucv;
1160         int notify_general_error = 0;
1161
1162         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1163                 notify_general_error = 1;
1164
1165         /* release may never happen from within CQ tasklet scope */
1166         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1167
1168         skb = skb_dequeue(&buf->skb_list);
1169         while (skb) {
1170                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1171                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1172                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1173                         if (skb->sk) {
1174                                 iucv = iucv_sk(skb->sk);
1175                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1176                         }
1177                 }
1178                 atomic_dec(&skb->users);
1179                 dev_kfree_skb_any(skb);
1180                 skb = skb_dequeue(&buf->skb_list);
1181         }
1182 }
1183
1184 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1185                 struct qeth_qdio_out_buffer *buf,
1186                 enum qeth_qdio_buffer_states newbufstate)
1187 {
1188         int i;
1189
1190         /* is PCI flag set on buffer? */
1191         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1192                 atomic_dec(&queue->set_pci_flags_count);
1193
1194         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1195                 qeth_release_skbs(buf);
1196         }
1197         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1198                 if (buf->buffer->element[i].addr && buf->is_header[i])
1199                         kmem_cache_free(qeth_core_header_cache,
1200                                 buf->buffer->element[i].addr);
1201                 buf->is_header[i] = 0;
1202                 buf->buffer->element[i].length = 0;
1203                 buf->buffer->element[i].addr = NULL;
1204                 buf->buffer->element[i].eflags = 0;
1205                 buf->buffer->element[i].sflags = 0;
1206         }
1207         buf->buffer->element[15].eflags = 0;
1208         buf->buffer->element[15].sflags = 0;
1209         buf->next_element_to_fill = 0;
1210         atomic_set(&buf->state, newbufstate);
1211 }
1212
1213 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1214 {
1215         int j;
1216
1217         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1218                 if (!q->bufs[j])
1219                         continue;
1220                 qeth_cleanup_handled_pending(q, j, 1);
1221                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1222                 if (free) {
1223                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1224                         q->bufs[j] = NULL;
1225                 }
1226         }
1227 }
1228
1229 void qeth_clear_qdio_buffers(struct qeth_card *card)
1230 {
1231         int i;
1232
1233         QETH_CARD_TEXT(card, 2, "clearqdbf");
1234         /* clear outbound buffers to free skbs */
1235         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1236                 if (card->qdio.out_qs[i]) {
1237                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1238                 }
1239         }
1240 }
1241 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1242
1243 static void qeth_free_buffer_pool(struct qeth_card *card)
1244 {
1245         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1246         int i = 0;
1247         list_for_each_entry_safe(pool_entry, tmp,
1248                                  &card->qdio.init_pool.entry_list, init_list){
1249                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1250                         free_page((unsigned long)pool_entry->elements[i]);
1251                 list_del(&pool_entry->init_list);
1252                 kfree(pool_entry);
1253         }
1254 }
1255
1256 static void qeth_free_qdio_buffers(struct qeth_card *card)
1257 {
1258         int i, j;
1259
1260         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1261                 QETH_QDIO_UNINITIALIZED)
1262                 return;
1263
1264         qeth_free_cq(card);
1265         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1266         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1267                 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1268         kfree(card->qdio.in_q);
1269         card->qdio.in_q = NULL;
1270         /* inbound buffer pool */
1271         qeth_free_buffer_pool(card);
1272         /* free outbound qdio_qs */
1273         if (card->qdio.out_qs) {
1274                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1275                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1276                         kfree(card->qdio.out_qs[i]);
1277                 }
1278                 kfree(card->qdio.out_qs);
1279                 card->qdio.out_qs = NULL;
1280         }
1281 }
1282
1283 static void qeth_clean_channel(struct qeth_channel *channel)
1284 {
1285         int cnt;
1286
1287         QETH_DBF_TEXT(SETUP, 2, "freech");
1288         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1289                 kfree(channel->iob[cnt].data);
1290 }
1291
1292 static void qeth_set_single_write_queues(struct qeth_card *card)
1293 {
1294         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1295             (card->qdio.no_out_queues == 4))
1296                 qeth_free_qdio_buffers(card);
1297
1298         card->qdio.no_out_queues = 1;
1299         if (card->qdio.default_out_queue != 0)
1300                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1301
1302         card->qdio.default_out_queue = 0;
1303 }
1304
1305 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1306 {
1307         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1308             (card->qdio.no_out_queues == 1)) {
1309                 qeth_free_qdio_buffers(card);
1310                 card->qdio.default_out_queue = 2;
1311         }
1312         card->qdio.no_out_queues = 4;
1313 }
1314
1315 static void qeth_update_from_chp_desc(struct qeth_card *card)
1316 {
1317         struct ccw_device *ccwdev;
1318         struct channelPath_dsc {
1319                 u8 flags;
1320                 u8 lsn;
1321                 u8 desc;
1322                 u8 chpid;
1323                 u8 swla;
1324                 u8 zeroes;
1325                 u8 chla;
1326                 u8 chpp;
1327         } *chp_dsc;
1328
1329         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1330
1331         ccwdev = card->data.ccwdev;
1332         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1333         if (!chp_dsc)
1334                 goto out;
1335
1336         card->info.func_level = 0x4100 + chp_dsc->desc;
1337         if (card->info.type == QETH_CARD_TYPE_IQD)
1338                 goto out;
1339
1340         /* CHPP field bit 6 == 1 -> single queue */
1341         if ((chp_dsc->chpp & 0x02) == 0x02)
1342                 qeth_set_single_write_queues(card);
1343         else
1344                 qeth_set_multiple_write_queues(card);
1345 out:
1346         kfree(chp_dsc);
1347         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1348         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1349 }
1350
1351 static void qeth_init_qdio_info(struct qeth_card *card)
1352 {
1353         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1354         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1355         /* inbound */
1356         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1357         if (card->info.type == QETH_CARD_TYPE_IQD)
1358                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1359         else
1360                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1361         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1362         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1363         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1364 }
1365
1366 static void qeth_set_intial_options(struct qeth_card *card)
1367 {
1368         card->options.route4.type = NO_ROUTER;
1369         card->options.route6.type = NO_ROUTER;
1370         card->options.fake_broadcast = 0;
1371         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1372         card->options.performance_stats = 0;
1373         card->options.rx_sg_cb = QETH_RX_SG_CB;
1374         card->options.isolation = ISOLATION_MODE_NONE;
1375         card->options.cq = QETH_CQ_DISABLED;
1376 }
1377
1378 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1379 {
1380         unsigned long flags;
1381         int rc = 0;
1382
1383         spin_lock_irqsave(&card->thread_mask_lock, flags);
1384         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1385                         (u8) card->thread_start_mask,
1386                         (u8) card->thread_allowed_mask,
1387                         (u8) card->thread_running_mask);
1388         rc = (card->thread_start_mask & thread);
1389         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1390         return rc;
1391 }
1392
1393 static void qeth_start_kernel_thread(struct work_struct *work)
1394 {
1395         struct task_struct *ts;
1396         struct qeth_card *card = container_of(work, struct qeth_card,
1397                                         kernel_thread_starter);
1398         QETH_CARD_TEXT(card , 2, "strthrd");
1399
1400         if (card->read.state != CH_STATE_UP &&
1401             card->write.state != CH_STATE_UP)
1402                 return;
1403         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1404                 ts = kthread_run(card->discipline->recover, (void *)card,
1405                                 "qeth_recover");
1406                 if (IS_ERR(ts)) {
1407                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1408                         qeth_clear_thread_running_bit(card,
1409                                 QETH_RECOVER_THREAD);
1410                 }
1411         }
1412 }
1413
1414 static int qeth_setup_card(struct qeth_card *card)
1415 {
1416
1417         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1418         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1419
1420         card->read.state  = CH_STATE_DOWN;
1421         card->write.state = CH_STATE_DOWN;
1422         card->data.state  = CH_STATE_DOWN;
1423         card->state = CARD_STATE_DOWN;
1424         card->lan_online = 0;
1425         card->read_or_write_problem = 0;
1426         card->dev = NULL;
1427         spin_lock_init(&card->vlanlock);
1428         spin_lock_init(&card->mclock);
1429         spin_lock_init(&card->lock);
1430         spin_lock_init(&card->ip_lock);
1431         spin_lock_init(&card->thread_mask_lock);
1432         mutex_init(&card->conf_mutex);
1433         mutex_init(&card->discipline_mutex);
1434         card->thread_start_mask = 0;
1435         card->thread_allowed_mask = 0;
1436         card->thread_running_mask = 0;
1437         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1438         INIT_LIST_HEAD(&card->ip_list);
1439         INIT_LIST_HEAD(card->ip_tbd_list);
1440         INIT_LIST_HEAD(&card->cmd_waiter_list);
1441         init_waitqueue_head(&card->wait_q);
1442         /* initial options */
1443         qeth_set_intial_options(card);
1444         /* IP address takeover */
1445         INIT_LIST_HEAD(&card->ipato.entries);
1446         card->ipato.enabled = 0;
1447         card->ipato.invert4 = 0;
1448         card->ipato.invert6 = 0;
1449         /* init QDIO stuff */
1450         qeth_init_qdio_info(card);
1451         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1452         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1453         return 0;
1454 }
1455
1456 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1457 {
1458         struct qeth_card *card = container_of(slr, struct qeth_card,
1459                                         qeth_service_level);
1460         if (card->info.mcl_level[0])
1461                 seq_printf(m, "qeth: %s firmware level %s\n",
1462                         CARD_BUS_ID(card), card->info.mcl_level);
1463 }
1464
1465 static struct qeth_card *qeth_alloc_card(void)
1466 {
1467         struct qeth_card *card;
1468
1469         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1470         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1471         if (!card)
1472                 goto out;
1473         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1474         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1475         if (!card->ip_tbd_list) {
1476                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1477                 goto out_card;
1478         }
1479         if (qeth_setup_channel(&card->read))
1480                 goto out_ip;
1481         if (qeth_setup_channel(&card->write))
1482                 goto out_channel;
1483         card->options.layer2 = -1;
1484         card->qeth_service_level.seq_print = qeth_core_sl_print;
1485         register_service_level(&card->qeth_service_level);
1486         return card;
1487
1488 out_channel:
1489         qeth_clean_channel(&card->read);
1490 out_ip:
1491         kfree(card->ip_tbd_list);
1492 out_card:
1493         kfree(card);
1494 out:
1495         return NULL;
1496 }
1497
1498 static int qeth_determine_card_type(struct qeth_card *card)
1499 {
1500         int i = 0;
1501
1502         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1503
1504         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1505         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1506         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1507                 if ((CARD_RDEV(card)->id.dev_type ==
1508                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1509                     (CARD_RDEV(card)->id.dev_model ==
1510                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1511                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1512                         card->qdio.no_out_queues =
1513                                 known_devices[i][QETH_QUEUE_NO_IND];
1514                         card->qdio.no_in_queues = 1;
1515                         card->info.is_multicast_different =
1516                                 known_devices[i][QETH_MULTICAST_IND];
1517                         qeth_update_from_chp_desc(card);
1518                         return 0;
1519                 }
1520                 i++;
1521         }
1522         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1523         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1524                 "unknown type\n");
1525         return -ENOENT;
1526 }
1527
1528 static int qeth_clear_channel(struct qeth_channel *channel)
1529 {
1530         unsigned long flags;
1531         struct qeth_card *card;
1532         int rc;
1533
1534         card = CARD_FROM_CDEV(channel->ccwdev);
1535         QETH_CARD_TEXT(card, 3, "clearch");
1536         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1537         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1538         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1539
1540         if (rc)
1541                 return rc;
1542         rc = wait_event_interruptible_timeout(card->wait_q,
1543                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1544         if (rc == -ERESTARTSYS)
1545                 return rc;
1546         if (channel->state != CH_STATE_STOPPED)
1547                 return -ETIME;
1548         channel->state = CH_STATE_DOWN;
1549         return 0;
1550 }
1551
1552 static int qeth_halt_channel(struct qeth_channel *channel)
1553 {
1554         unsigned long flags;
1555         struct qeth_card *card;
1556         int rc;
1557
1558         card = CARD_FROM_CDEV(channel->ccwdev);
1559         QETH_CARD_TEXT(card, 3, "haltch");
1560         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1561         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1562         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1563
1564         if (rc)
1565                 return rc;
1566         rc = wait_event_interruptible_timeout(card->wait_q,
1567                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1568         if (rc == -ERESTARTSYS)
1569                 return rc;
1570         if (channel->state != CH_STATE_HALTED)
1571                 return -ETIME;
1572         return 0;
1573 }
1574
1575 static int qeth_halt_channels(struct qeth_card *card)
1576 {
1577         int rc1 = 0, rc2 = 0, rc3 = 0;
1578
1579         QETH_CARD_TEXT(card, 3, "haltchs");
1580         rc1 = qeth_halt_channel(&card->read);
1581         rc2 = qeth_halt_channel(&card->write);
1582         rc3 = qeth_halt_channel(&card->data);
1583         if (rc1)
1584                 return rc1;
1585         if (rc2)
1586                 return rc2;
1587         return rc3;
1588 }
1589
1590 static int qeth_clear_channels(struct qeth_card *card)
1591 {
1592         int rc1 = 0, rc2 = 0, rc3 = 0;
1593
1594         QETH_CARD_TEXT(card, 3, "clearchs");
1595         rc1 = qeth_clear_channel(&card->read);
1596         rc2 = qeth_clear_channel(&card->write);
1597         rc3 = qeth_clear_channel(&card->data);
1598         if (rc1)
1599                 return rc1;
1600         if (rc2)
1601                 return rc2;
1602         return rc3;
1603 }
1604
1605 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1606 {
1607         int rc = 0;
1608
1609         QETH_CARD_TEXT(card, 3, "clhacrd");
1610
1611         if (halt)
1612                 rc = qeth_halt_channels(card);
1613         if (rc)
1614                 return rc;
1615         return qeth_clear_channels(card);
1616 }
1617
1618 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1619 {
1620         int rc = 0;
1621
1622         QETH_CARD_TEXT(card, 3, "qdioclr");
1623         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1624                 QETH_QDIO_CLEANING)) {
1625         case QETH_QDIO_ESTABLISHED:
1626                 if (card->info.type == QETH_CARD_TYPE_IQD)
1627                         rc = qdio_shutdown(CARD_DDEV(card),
1628                                 QDIO_FLAG_CLEANUP_USING_HALT);
1629                 else
1630                         rc = qdio_shutdown(CARD_DDEV(card),
1631                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1632                 if (rc)
1633                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1634                 qdio_free(CARD_DDEV(card));
1635                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1636                 break;
1637         case QETH_QDIO_CLEANING:
1638                 return rc;
1639         default:
1640                 break;
1641         }
1642         rc = qeth_clear_halt_card(card, use_halt);
1643         if (rc)
1644                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1645         card->state = CARD_STATE_DOWN;
1646         return rc;
1647 }
1648 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1649
1650 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1651                                int *length)
1652 {
1653         struct ciw *ciw;
1654         char *rcd_buf;
1655         int ret;
1656         struct qeth_channel *channel = &card->data;
1657         unsigned long flags;
1658
1659         /*
1660          * scan for RCD command in extended SenseID data
1661          */
1662         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1663         if (!ciw || ciw->cmd == 0)
1664                 return -EOPNOTSUPP;
1665         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1666         if (!rcd_buf)
1667                 return -ENOMEM;
1668
1669         channel->ccw.cmd_code = ciw->cmd;
1670         channel->ccw.cda = (__u32) __pa(rcd_buf);
1671         channel->ccw.count = ciw->count;
1672         channel->ccw.flags = CCW_FLAG_SLI;
1673         channel->state = CH_STATE_RCD;
1674         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1675         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1676                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1677                                        QETH_RCD_TIMEOUT);
1678         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1679         if (!ret)
1680                 wait_event(card->wait_q,
1681                            (channel->state == CH_STATE_RCD_DONE ||
1682                             channel->state == CH_STATE_DOWN));
1683         if (channel->state == CH_STATE_DOWN)
1684                 ret = -EIO;
1685         else
1686                 channel->state = CH_STATE_DOWN;
1687         if (ret) {
1688                 kfree(rcd_buf);
1689                 *buffer = NULL;
1690                 *length = 0;
1691         } else {
1692                 *length = ciw->count;
1693                 *buffer = rcd_buf;
1694         }
1695         return ret;
1696 }
1697
1698 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1699 {
1700         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1701         card->info.chpid = prcd[30];
1702         card->info.unit_addr2 = prcd[31];
1703         card->info.cula = prcd[63];
1704         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1705                                (prcd[0x11] == _ascebc['M']));
1706 }
1707
1708 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1709 {
1710         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1711
1712         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1713             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1714                 card->info.blkt.time_total = 250;
1715                 card->info.blkt.inter_packet = 5;
1716                 card->info.blkt.inter_packet_jumbo = 15;
1717         } else {
1718                 card->info.blkt.time_total = 0;
1719                 card->info.blkt.inter_packet = 0;
1720                 card->info.blkt.inter_packet_jumbo = 0;
1721         }
1722 }
1723
1724 static void qeth_init_tokens(struct qeth_card *card)
1725 {
1726         card->token.issuer_rm_w = 0x00010103UL;
1727         card->token.cm_filter_w = 0x00010108UL;
1728         card->token.cm_connection_w = 0x0001010aUL;
1729         card->token.ulp_filter_w = 0x0001010bUL;
1730         card->token.ulp_connection_w = 0x0001010dUL;
1731 }
1732
1733 static void qeth_init_func_level(struct qeth_card *card)
1734 {
1735         switch (card->info.type) {
1736         case QETH_CARD_TYPE_IQD:
1737                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1738                 break;
1739         case QETH_CARD_TYPE_OSD:
1740         case QETH_CARD_TYPE_OSN:
1741                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1742                 break;
1743         default:
1744                 break;
1745         }
1746 }
1747
1748 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1749                 void (*idx_reply_cb)(struct qeth_channel *,
1750                         struct qeth_cmd_buffer *))
1751 {
1752         struct qeth_cmd_buffer *iob;
1753         unsigned long flags;
1754         int rc;
1755         struct qeth_card *card;
1756
1757         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1758         card = CARD_FROM_CDEV(channel->ccwdev);
1759         iob = qeth_get_buffer(channel);
1760         iob->callback = idx_reply_cb;
1761         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1762         channel->ccw.count = QETH_BUFSIZE;
1763         channel->ccw.cda = (__u32) __pa(iob->data);
1764
1765         wait_event(card->wait_q,
1766                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1767         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1768         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1769         rc = ccw_device_start(channel->ccwdev,
1770                               &channel->ccw, (addr_t) iob, 0, 0);
1771         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1772
1773         if (rc) {
1774                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1775                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1776                 atomic_set(&channel->irq_pending, 0);
1777                 wake_up(&card->wait_q);
1778                 return rc;
1779         }
1780         rc = wait_event_interruptible_timeout(card->wait_q,
1781                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1782         if (rc == -ERESTARTSYS)
1783                 return rc;
1784         if (channel->state != CH_STATE_UP) {
1785                 rc = -ETIME;
1786                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1787                 qeth_clear_cmd_buffers(channel);
1788         } else
1789                 rc = 0;
1790         return rc;
1791 }
1792
1793 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1794                 void (*idx_reply_cb)(struct qeth_channel *,
1795                         struct qeth_cmd_buffer *))
1796 {
1797         struct qeth_card *card;
1798         struct qeth_cmd_buffer *iob;
1799         unsigned long flags;
1800         __u16 temp;
1801         __u8 tmp;
1802         int rc;
1803         struct ccw_dev_id temp_devid;
1804
1805         card = CARD_FROM_CDEV(channel->ccwdev);
1806
1807         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1808
1809         iob = qeth_get_buffer(channel);
1810         iob->callback = idx_reply_cb;
1811         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1812         channel->ccw.count = IDX_ACTIVATE_SIZE;
1813         channel->ccw.cda = (__u32) __pa(iob->data);
1814         if (channel == &card->write) {
1815                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1816                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1817                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1818                 card->seqno.trans_hdr++;
1819         } else {
1820                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1821                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1822                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1823         }
1824         tmp = ((__u8)card->info.portno) | 0x80;
1825         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1826         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1827                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1828         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1829                &card->info.func_level, sizeof(__u16));
1830         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1831         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1832         temp = (card->info.cula << 8) + card->info.unit_addr2;
1833         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1834
1835         wait_event(card->wait_q,
1836                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1837         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1838         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1839         rc = ccw_device_start(channel->ccwdev,
1840                               &channel->ccw, (addr_t) iob, 0, 0);
1841         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1842
1843         if (rc) {
1844                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1845                         rc);
1846                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1847                 atomic_set(&channel->irq_pending, 0);
1848                 wake_up(&card->wait_q);
1849                 return rc;
1850         }
1851         rc = wait_event_interruptible_timeout(card->wait_q,
1852                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1853         if (rc == -ERESTARTSYS)
1854                 return rc;
1855         if (channel->state != CH_STATE_ACTIVATING) {
1856                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1857                         " failed to recover an error on the device\n");
1858                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1859                         dev_name(&channel->ccwdev->dev));
1860                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1861                 qeth_clear_cmd_buffers(channel);
1862                 return -ETIME;
1863         }
1864         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1865 }
1866
1867 static int qeth_peer_func_level(int level)
1868 {
1869         if ((level & 0xff) == 8)
1870                 return (level & 0xff) + 0x400;
1871         if (((level >> 8) & 3) == 1)
1872                 return (level & 0xff) + 0x200;
1873         return level;
1874 }
1875
1876 static void qeth_idx_write_cb(struct qeth_channel *channel,
1877                 struct qeth_cmd_buffer *iob)
1878 {
1879         struct qeth_card *card;
1880         __u16 temp;
1881
1882         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1883
1884         if (channel->state == CH_STATE_DOWN) {
1885                 channel->state = CH_STATE_ACTIVATING;
1886                 goto out;
1887         }
1888         card = CARD_FROM_CDEV(channel->ccwdev);
1889
1890         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1891                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1892                         dev_err(&card->write.ccwdev->dev,
1893                                 "The adapter is used exclusively by another "
1894                                 "host\n");
1895                 else
1896                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1897                                 " negative reply\n",
1898                                 dev_name(&card->write.ccwdev->dev));
1899                 goto out;
1900         }
1901         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1902         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1903                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1904                         "function level mismatch (sent: 0x%x, received: "
1905                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1906                         card->info.func_level, temp);
1907                 goto out;
1908         }
1909         channel->state = CH_STATE_UP;
1910 out:
1911         qeth_release_buffer(channel, iob);
1912 }
1913
1914 static void qeth_idx_read_cb(struct qeth_channel *channel,
1915                 struct qeth_cmd_buffer *iob)
1916 {
1917         struct qeth_card *card;
1918         __u16 temp;
1919
1920         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1921         if (channel->state == CH_STATE_DOWN) {
1922                 channel->state = CH_STATE_ACTIVATING;
1923                 goto out;
1924         }
1925
1926         card = CARD_FROM_CDEV(channel->ccwdev);
1927         if (qeth_check_idx_response(card, iob->data))
1928                         goto out;
1929
1930         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1931                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1932                 case QETH_IDX_ACT_ERR_EXCL:
1933                         dev_err(&card->write.ccwdev->dev,
1934                                 "The adapter is used exclusively by another "
1935                                 "host\n");
1936                         break;
1937                 case QETH_IDX_ACT_ERR_AUTH:
1938                 case QETH_IDX_ACT_ERR_AUTH_USER:
1939                         dev_err(&card->read.ccwdev->dev,
1940                                 "Setting the device online failed because of "
1941                                 "insufficient authorization\n");
1942                         break;
1943                 default:
1944                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1945                                 " negative reply\n",
1946                                 dev_name(&card->read.ccwdev->dev));
1947                 }
1948                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1949                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1950                 goto out;
1951         }
1952
1953 /**
1954  *  * temporary fix for microcode bug
1955  *   * to revert it,replace OR by AND
1956  *    */
1957         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1958              (card->info.type == QETH_CARD_TYPE_OSD))
1959                 card->info.portname_required = 1;
1960
1961         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1962         if (temp != qeth_peer_func_level(card->info.func_level)) {
1963                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1964                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1965                         dev_name(&card->read.ccwdev->dev),
1966                         card->info.func_level, temp);
1967                 goto out;
1968         }
1969         memcpy(&card->token.issuer_rm_r,
1970                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1971                QETH_MPC_TOKEN_LENGTH);
1972         memcpy(&card->info.mcl_level[0],
1973                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1974         channel->state = CH_STATE_UP;
1975 out:
1976         qeth_release_buffer(channel, iob);
1977 }
1978
1979 void qeth_prepare_control_data(struct qeth_card *card, int len,
1980                 struct qeth_cmd_buffer *iob)
1981 {
1982         qeth_setup_ccw(&card->write, iob->data, len);
1983         iob->callback = qeth_release_buffer;
1984
1985         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1986                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1987         card->seqno.trans_hdr++;
1988         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1989                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1990         card->seqno.pdu_hdr++;
1991         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1992                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1993         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1994 }
1995 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1996
1997 int qeth_send_control_data(struct qeth_card *card, int len,
1998                 struct qeth_cmd_buffer *iob,
1999                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2000                         unsigned long),
2001                 void *reply_param)
2002 {
2003         int rc;
2004         unsigned long flags;
2005         struct qeth_reply *reply = NULL;
2006         unsigned long timeout, event_timeout;
2007         struct qeth_ipa_cmd *cmd;
2008
2009         QETH_CARD_TEXT(card, 2, "sendctl");
2010
2011         if (card->read_or_write_problem) {
2012                 qeth_release_buffer(iob->channel, iob);
2013                 return -EIO;
2014         }
2015         reply = qeth_alloc_reply(card);
2016         if (!reply) {
2017                 return -ENOMEM;
2018         }
2019         reply->callback = reply_cb;
2020         reply->param = reply_param;
2021         if (card->state == CARD_STATE_DOWN)
2022                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2023         else
2024                 reply->seqno = card->seqno.ipa++;
2025         init_waitqueue_head(&reply->wait_q);
2026         spin_lock_irqsave(&card->lock, flags);
2027         list_add_tail(&reply->list, &card->cmd_waiter_list);
2028         spin_unlock_irqrestore(&card->lock, flags);
2029         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2030
2031         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2032         qeth_prepare_control_data(card, len, iob);
2033
2034         if (IS_IPA(iob->data))
2035                 event_timeout = QETH_IPA_TIMEOUT;
2036         else
2037                 event_timeout = QETH_TIMEOUT;
2038         timeout = jiffies + event_timeout;
2039
2040         QETH_CARD_TEXT(card, 6, "noirqpnd");
2041         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2042         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2043                               (addr_t) iob, 0, 0);
2044         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2045         if (rc) {
2046                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2047                         "ccw_device_start rc = %i\n",
2048                         dev_name(&card->write.ccwdev->dev), rc);
2049                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2050                 spin_lock_irqsave(&card->lock, flags);
2051                 list_del_init(&reply->list);
2052                 qeth_put_reply(reply);
2053                 spin_unlock_irqrestore(&card->lock, flags);
2054                 qeth_release_buffer(iob->channel, iob);
2055                 atomic_set(&card->write.irq_pending, 0);
2056                 wake_up(&card->wait_q);
2057                 return rc;
2058         }
2059
2060         /* we have only one long running ipassist, since we can ensure
2061            process context of this command we can sleep */
2062         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2063         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2064             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2065                 if (!wait_event_timeout(reply->wait_q,
2066                     atomic_read(&reply->received), event_timeout))
2067                         goto time_err;
2068         } else {
2069                 while (!atomic_read(&reply->received)) {
2070                         if (time_after(jiffies, timeout))
2071                                 goto time_err;
2072                         cpu_relax();
2073                 }
2074         }
2075
2076         if (reply->rc == -EIO)
2077                 goto error;
2078         rc = reply->rc;
2079         qeth_put_reply(reply);
2080         return rc;
2081
2082 time_err:
2083         reply->rc = -ETIME;
2084         spin_lock_irqsave(&reply->card->lock, flags);
2085         list_del_init(&reply->list);
2086         spin_unlock_irqrestore(&reply->card->lock, flags);
2087         atomic_inc(&reply->received);
2088 error:
2089         atomic_set(&card->write.irq_pending, 0);
2090         qeth_release_buffer(iob->channel, iob);
2091         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2092         rc = reply->rc;
2093         qeth_put_reply(reply);
2094         return rc;
2095 }
2096 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2097
2098 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2099                 unsigned long data)
2100 {
2101         struct qeth_cmd_buffer *iob;
2102
2103         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2104
2105         iob = (struct qeth_cmd_buffer *) data;
2106         memcpy(&card->token.cm_filter_r,
2107                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2108                QETH_MPC_TOKEN_LENGTH);
2109         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2110         return 0;
2111 }
2112
2113 static int qeth_cm_enable(struct qeth_card *card)
2114 {
2115         int rc;
2116         struct qeth_cmd_buffer *iob;
2117
2118         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2119
2120         iob = qeth_wait_for_buffer(&card->write);
2121         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2122         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2123                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2124         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2125                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2126
2127         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2128                                     qeth_cm_enable_cb, NULL);
2129         return rc;
2130 }
2131
2132 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2133                 unsigned long data)
2134 {
2135
2136         struct qeth_cmd_buffer *iob;
2137
2138         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2139
2140         iob = (struct qeth_cmd_buffer *) data;
2141         memcpy(&card->token.cm_connection_r,
2142                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2143                QETH_MPC_TOKEN_LENGTH);
2144         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2145         return 0;
2146 }
2147
2148 static int qeth_cm_setup(struct qeth_card *card)
2149 {
2150         int rc;
2151         struct qeth_cmd_buffer *iob;
2152
2153         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2154
2155         iob = qeth_wait_for_buffer(&card->write);
2156         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2157         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2158                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2159         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2160                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2161         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2162                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2163         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2164                                     qeth_cm_setup_cb, NULL);
2165         return rc;
2166
2167 }
2168
2169 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2170 {
2171         switch (card->info.type) {
2172         case QETH_CARD_TYPE_UNKNOWN:
2173                 return 1500;
2174         case QETH_CARD_TYPE_IQD:
2175                 return card->info.max_mtu;
2176         case QETH_CARD_TYPE_OSD:
2177                 switch (card->info.link_type) {
2178                 case QETH_LINK_TYPE_HSTR:
2179                 case QETH_LINK_TYPE_LANE_TR:
2180                         return 2000;
2181                 default:
2182                         return 1492;
2183                 }
2184         case QETH_CARD_TYPE_OSM:
2185         case QETH_CARD_TYPE_OSX:
2186                 return 1492;
2187         default:
2188                 return 1500;
2189         }
2190 }
2191
2192 static inline int qeth_get_mtu_outof_framesize(int framesize)
2193 {
2194         switch (framesize) {
2195         case 0x4000:
2196                 return 8192;
2197         case 0x6000:
2198                 return 16384;
2199         case 0xa000:
2200                 return 32768;
2201         case 0xffff:
2202                 return 57344;
2203         default:
2204                 return 0;
2205         }
2206 }
2207
2208 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2209 {
2210         switch (card->info.type) {
2211         case QETH_CARD_TYPE_OSD:
2212         case QETH_CARD_TYPE_OSM:
2213         case QETH_CARD_TYPE_OSX:
2214         case QETH_CARD_TYPE_IQD:
2215                 return ((mtu >= 576) &&
2216                         (mtu <= card->info.max_mtu));
2217         case QETH_CARD_TYPE_OSN:
2218         case QETH_CARD_TYPE_UNKNOWN:
2219         default:
2220                 return 1;
2221         }
2222 }
2223
2224 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2225                 unsigned long data)
2226 {
2227
2228         __u16 mtu, framesize;
2229         __u16 len;
2230         __u8 link_type;
2231         struct qeth_cmd_buffer *iob;
2232
2233         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2234
2235         iob = (struct qeth_cmd_buffer *) data;
2236         memcpy(&card->token.ulp_filter_r,
2237                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2238                QETH_MPC_TOKEN_LENGTH);
2239         if (card->info.type == QETH_CARD_TYPE_IQD) {
2240                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2241                 mtu = qeth_get_mtu_outof_framesize(framesize);
2242                 if (!mtu) {
2243                         iob->rc = -EINVAL;
2244                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2245                         return 0;
2246                 }
2247                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2248                         /* frame size has changed */
2249                         if (card->dev &&
2250                             ((card->dev->mtu == card->info.initial_mtu) ||
2251                              (card->dev->mtu > mtu)))
2252                                 card->dev->mtu = mtu;
2253                         qeth_free_qdio_buffers(card);
2254                 }
2255                 card->info.initial_mtu = mtu;
2256                 card->info.max_mtu = mtu;
2257                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2258         } else {
2259                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2260                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2261                         iob->data);
2262                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2263         }
2264
2265         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2266         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2267                 memcpy(&link_type,
2268                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2269                 card->info.link_type = link_type;
2270         } else
2271                 card->info.link_type = 0;
2272         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2273         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2274         return 0;
2275 }
2276
2277 static int qeth_ulp_enable(struct qeth_card *card)
2278 {
2279         int rc;
2280         char prot_type;
2281         struct qeth_cmd_buffer *iob;
2282
2283         /*FIXME: trace view callbacks*/
2284         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2285
2286         iob = qeth_wait_for_buffer(&card->write);
2287         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2288
2289         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2290                 (__u8) card->info.portno;
2291         if (card->options.layer2)
2292                 if (card->info.type == QETH_CARD_TYPE_OSN)
2293                         prot_type = QETH_PROT_OSN2;
2294                 else
2295                         prot_type = QETH_PROT_LAYER2;
2296         else
2297                 prot_type = QETH_PROT_TCPIP;
2298
2299         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2300         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2301                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2302         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2303                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2304         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2305                card->info.portname, 9);
2306         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2307                                     qeth_ulp_enable_cb, NULL);
2308         return rc;
2309
2310 }
2311
2312 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2313                 unsigned long data)
2314 {
2315         struct qeth_cmd_buffer *iob;
2316
2317         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2318
2319         iob = (struct qeth_cmd_buffer *) data;
2320         memcpy(&card->token.ulp_connection_r,
2321                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2322                QETH_MPC_TOKEN_LENGTH);
2323         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2324                      3)) {
2325                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2326                 dev_err(&card->gdev->dev, "A connection could not be "
2327                         "established because of an OLM limit\n");
2328                 iob->rc = -EMLINK;
2329         }
2330         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2331         return 0;
2332 }
2333
2334 static int qeth_ulp_setup(struct qeth_card *card)
2335 {
2336         int rc;
2337         __u16 temp;
2338         struct qeth_cmd_buffer *iob;
2339         struct ccw_dev_id dev_id;
2340
2341         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2342
2343         iob = qeth_wait_for_buffer(&card->write);
2344         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2345
2346         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2347                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2348         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2349                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2350         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2351                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2352
2353         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2354         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2355         temp = (card->info.cula << 8) + card->info.unit_addr2;
2356         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2357         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2358                                     qeth_ulp_setup_cb, NULL);
2359         return rc;
2360 }
2361
2362 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2363 {
2364         int rc;
2365         struct qeth_qdio_out_buffer *newbuf;
2366
2367         rc = 0;
2368         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2369         if (!newbuf) {
2370                 rc = -ENOMEM;
2371                 goto out;
2372         }
2373         newbuf->buffer = &q->qdio_bufs[bidx];
2374         skb_queue_head_init(&newbuf->skb_list);
2375         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2376         newbuf->q = q;
2377         newbuf->aob = NULL;
2378         newbuf->next_pending = q->bufs[bidx];
2379         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2380         q->bufs[bidx] = newbuf;
2381         if (q->bufstates) {
2382                 q->bufstates[bidx].user = newbuf;
2383                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2384                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2385                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2386                                 (long) newbuf->next_pending);
2387         }
2388 out:
2389         return rc;
2390 }
2391
2392
2393 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2394 {
2395         int i, j;
2396
2397         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2398
2399         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2400                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2401                 return 0;
2402
2403         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2404                                    GFP_KERNEL);
2405         if (!card->qdio.in_q)
2406                 goto out_nomem;
2407         QETH_DBF_TEXT(SETUP, 2, "inq");
2408         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2409         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2410         /* give inbound qeth_qdio_buffers their qdio_buffers */
2411         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2412                 card->qdio.in_q->bufs[i].buffer =
2413                         &card->qdio.in_q->qdio_bufs[i];
2414                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2415         }
2416         /* inbound buffer pool */
2417         if (qeth_alloc_buffer_pool(card))
2418                 goto out_freeinq;
2419
2420         /* outbound */
2421         card->qdio.out_qs =
2422                 kzalloc(card->qdio.no_out_queues *
2423                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2424         if (!card->qdio.out_qs)
2425                 goto out_freepool;
2426         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2427                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2428                                                GFP_KERNEL);
2429                 if (!card->qdio.out_qs[i])
2430                         goto out_freeoutq;
2431                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2432                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2433                 card->qdio.out_qs[i]->queue_no = i;
2434                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2435                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2436                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2437                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2438                                 goto out_freeoutqbufs;
2439                 }
2440         }
2441
2442         /* completion */
2443         if (qeth_alloc_cq(card))
2444                 goto out_freeoutq;
2445
2446         return 0;
2447
2448 out_freeoutqbufs:
2449         while (j > 0) {
2450                 --j;
2451                 kmem_cache_free(qeth_qdio_outbuf_cache,
2452                                 card->qdio.out_qs[i]->bufs[j]);
2453                 card->qdio.out_qs[i]->bufs[j] = NULL;
2454         }
2455 out_freeoutq:
2456         while (i > 0) {
2457                 kfree(card->qdio.out_qs[--i]);
2458                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2459         }
2460         kfree(card->qdio.out_qs);
2461         card->qdio.out_qs = NULL;
2462 out_freepool:
2463         qeth_free_buffer_pool(card);
2464 out_freeinq:
2465         kfree(card->qdio.in_q);
2466         card->qdio.in_q = NULL;
2467 out_nomem:
2468         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2469         return -ENOMEM;
2470 }
2471
2472 static void qeth_create_qib_param_field(struct qeth_card *card,
2473                 char *param_field)
2474 {
2475
2476         param_field[0] = _ascebc['P'];
2477         param_field[1] = _ascebc['C'];
2478         param_field[2] = _ascebc['I'];
2479         param_field[3] = _ascebc['T'];
2480         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2481         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2482         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2483 }
2484
2485 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2486                 char *param_field)
2487 {
2488         param_field[16] = _ascebc['B'];
2489         param_field[17] = _ascebc['L'];
2490         param_field[18] = _ascebc['K'];
2491         param_field[19] = _ascebc['T'];
2492         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2493         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2494         *((unsigned int *) (&param_field[28])) =
2495                 card->info.blkt.inter_packet_jumbo;
2496 }
2497
2498 static int qeth_qdio_activate(struct qeth_card *card)
2499 {
2500         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2501         return qdio_activate(CARD_DDEV(card));
2502 }
2503
2504 static int qeth_dm_act(struct qeth_card *card)
2505 {
2506         int rc;
2507         struct qeth_cmd_buffer *iob;
2508
2509         QETH_DBF_TEXT(SETUP, 2, "dmact");
2510
2511         iob = qeth_wait_for_buffer(&card->write);
2512         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2513
2514         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2515                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2516         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2517                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2518         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2519         return rc;
2520 }
2521
2522 static int qeth_mpc_initialize(struct qeth_card *card)
2523 {
2524         int rc;
2525
2526         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2527
2528         rc = qeth_issue_next_read(card);
2529         if (rc) {
2530                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2531                 return rc;
2532         }
2533         rc = qeth_cm_enable(card);
2534         if (rc) {
2535                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2536                 goto out_qdio;
2537         }
2538         rc = qeth_cm_setup(card);
2539         if (rc) {
2540                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2541                 goto out_qdio;
2542         }
2543         rc = qeth_ulp_enable(card);
2544         if (rc) {
2545                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2546                 goto out_qdio;
2547         }
2548         rc = qeth_ulp_setup(card);
2549         if (rc) {
2550                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2551                 goto out_qdio;
2552         }
2553         rc = qeth_alloc_qdio_buffers(card);
2554         if (rc) {
2555                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2556                 goto out_qdio;
2557         }
2558         rc = qeth_qdio_establish(card);
2559         if (rc) {
2560                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2561                 qeth_free_qdio_buffers(card);
2562                 goto out_qdio;
2563         }
2564         rc = qeth_qdio_activate(card);
2565         if (rc) {
2566                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2567                 goto out_qdio;
2568         }
2569         rc = qeth_dm_act(card);
2570         if (rc) {
2571                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2572                 goto out_qdio;
2573         }
2574
2575         return 0;
2576 out_qdio:
2577         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2578         return rc;
2579 }
2580
2581 static void qeth_print_status_with_portname(struct qeth_card *card)
2582 {
2583         char dbf_text[15];
2584         int i;
2585
2586         sprintf(dbf_text, "%s", card->info.portname + 1);
2587         for (i = 0; i < 8; i++)
2588                 dbf_text[i] =
2589                         (char) _ebcasc[(__u8) dbf_text[i]];
2590         dbf_text[8] = 0;
2591         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2592                "with link type %s (portname: %s)\n",
2593                qeth_get_cardname(card),
2594                (card->info.mcl_level[0]) ? " (level: " : "",
2595                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2596                (card->info.mcl_level[0]) ? ")" : "",
2597                qeth_get_cardname_short(card),
2598                dbf_text);
2599
2600 }
2601
2602 static void qeth_print_status_no_portname(struct qeth_card *card)
2603 {
2604         if (card->info.portname[0])
2605                 dev_info(&card->gdev->dev, "Device is a%s "
2606                        "card%s%s%s\nwith link type %s "
2607                        "(no portname needed by interface).\n",
2608                        qeth_get_cardname(card),
2609                        (card->info.mcl_level[0]) ? " (level: " : "",
2610                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2611                        (card->info.mcl_level[0]) ? ")" : "",
2612                        qeth_get_cardname_short(card));
2613         else
2614                 dev_info(&card->gdev->dev, "Device is a%s "
2615                        "card%s%s%s\nwith link type %s.\n",
2616                        qeth_get_cardname(card),
2617                        (card->info.mcl_level[0]) ? " (level: " : "",
2618                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2619                        (card->info.mcl_level[0]) ? ")" : "",
2620                        qeth_get_cardname_short(card));
2621 }
2622
2623 void qeth_print_status_message(struct qeth_card *card)
2624 {
2625         switch (card->info.type) {
2626         case QETH_CARD_TYPE_OSD:
2627         case QETH_CARD_TYPE_OSM:
2628         case QETH_CARD_TYPE_OSX:
2629                 /* VM will use a non-zero first character
2630                  * to indicate a HiperSockets like reporting
2631                  * of the level OSA sets the first character to zero
2632                  * */
2633                 if (!card->info.mcl_level[0]) {
2634                         sprintf(card->info.mcl_level, "%02x%02x",
2635                                 card->info.mcl_level[2],
2636                                 card->info.mcl_level[3]);
2637
2638                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2639                         break;
2640                 }
2641                 /* fallthrough */
2642         case QETH_CARD_TYPE_IQD:
2643                 if ((card->info.guestlan) ||
2644                     (card->info.mcl_level[0] & 0x80)) {
2645                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2646                                 card->info.mcl_level[0]];
2647                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2648                                 card->info.mcl_level[1]];
2649                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2650                                 card->info.mcl_level[2]];
2651                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2652                                 card->info.mcl_level[3]];
2653                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2654                 }
2655                 break;
2656         default:
2657                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2658         }
2659         if (card->info.portname_required)
2660                 qeth_print_status_with_portname(card);
2661         else
2662                 qeth_print_status_no_portname(card);
2663 }
2664 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2665
2666 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2667 {
2668         struct qeth_buffer_pool_entry *entry;
2669
2670         QETH_CARD_TEXT(card, 5, "inwrklst");
2671
2672         list_for_each_entry(entry,
2673                             &card->qdio.init_pool.entry_list, init_list) {
2674                 qeth_put_buffer_pool_entry(card, entry);
2675         }
2676 }
2677
2678 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2679                 struct qeth_card *card)
2680 {
2681         struct list_head *plh;
2682         struct qeth_buffer_pool_entry *entry;
2683         int i, free;
2684         struct page *page;
2685
2686         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2687                 return NULL;
2688
2689         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2690                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2691                 free = 1;
2692                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2693                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2694                                 free = 0;
2695                                 break;
2696                         }
2697                 }
2698                 if (free) {
2699                         list_del_init(&entry->list);
2700                         return entry;
2701                 }
2702         }
2703
2704         /* no free buffer in pool so take first one and swap pages */
2705         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2706                         struct qeth_buffer_pool_entry, list);
2707         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2708                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2709                         page = alloc_page(GFP_ATOMIC);
2710                         if (!page) {
2711                                 return NULL;
2712                         } else {
2713                                 free_page((unsigned long)entry->elements[i]);
2714                                 entry->elements[i] = page_address(page);
2715                                 if (card->options.performance_stats)
2716                                         card->perf_stats.sg_alloc_page_rx++;
2717                         }
2718                 }
2719         }
2720         list_del_init(&entry->list);
2721         return entry;
2722 }
2723
2724 static int qeth_init_input_buffer(struct qeth_card *card,
2725                 struct qeth_qdio_buffer *buf)
2726 {
2727         struct qeth_buffer_pool_entry *pool_entry;
2728         int i;
2729
2730         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2731                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2732                 if (!buf->rx_skb)
2733                         return 1;
2734         }
2735
2736         pool_entry = qeth_find_free_buffer_pool_entry(card);
2737         if (!pool_entry)
2738                 return 1;
2739
2740         /*
2741          * since the buffer is accessed only from the input_tasklet
2742          * there shouldn't be a need to synchronize; also, since we use
2743          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2744          * buffers
2745          */
2746
2747         buf->pool_entry = pool_entry;
2748         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2749                 buf->buffer->element[i].length = PAGE_SIZE;
2750                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2751                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2752                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2753                 else
2754                         buf->buffer->element[i].eflags = 0;
2755                 buf->buffer->element[i].sflags = 0;
2756         }
2757         return 0;
2758 }
2759
2760 int qeth_init_qdio_queues(struct qeth_card *card)
2761 {
2762         int i, j;
2763         int rc;
2764
2765         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2766
2767         /* inbound queue */
2768         memset(card->qdio.in_q->qdio_bufs, 0,
2769                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2770         qeth_initialize_working_pool_list(card);
2771         /*give only as many buffers to hardware as we have buffer pool entries*/
2772         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2773                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2774         card->qdio.in_q->next_buf_to_init =
2775                 card->qdio.in_buf_pool.buf_count - 1;
2776         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2777                      card->qdio.in_buf_pool.buf_count - 1);
2778         if (rc) {
2779                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2780                 return rc;
2781         }
2782
2783         /* completion */
2784         rc = qeth_cq_init(card);
2785         if (rc) {
2786                 return rc;
2787         }
2788
2789         /* outbound queue */
2790         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2791                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2792                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2793                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2794                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2795                                         card->qdio.out_qs[i]->bufs[j],
2796                                         QETH_QDIO_BUF_EMPTY);
2797                 }
2798                 card->qdio.out_qs[i]->card = card;
2799                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2800                 card->qdio.out_qs[i]->do_pack = 0;
2801                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2802                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2803                 atomic_set(&card->qdio.out_qs[i]->state,
2804                            QETH_OUT_Q_UNLOCKED);
2805         }
2806         return 0;
2807 }
2808 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2809
2810 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2811 {
2812         switch (link_type) {
2813         case QETH_LINK_TYPE_HSTR:
2814                 return 2;
2815         default:
2816                 return 1;
2817         }
2818 }
2819
2820 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2821                 struct qeth_ipa_cmd *cmd, __u8 command,
2822                 enum qeth_prot_versions prot)
2823 {
2824         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2825         cmd->hdr.command = command;
2826         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2827         cmd->hdr.seqno = card->seqno.ipa;
2828         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2829         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2830         if (card->options.layer2)
2831                 cmd->hdr.prim_version_no = 2;
2832         else
2833                 cmd->hdr.prim_version_no = 1;
2834         cmd->hdr.param_count = 1;
2835         cmd->hdr.prot_version = prot;
2836         cmd->hdr.ipa_supported = 0;
2837         cmd->hdr.ipa_enabled = 0;
2838 }
2839
2840 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2841                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2842 {
2843         struct qeth_cmd_buffer *iob;
2844         struct qeth_ipa_cmd *cmd;
2845
2846         iob = qeth_wait_for_buffer(&card->write);
2847         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2848         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2849
2850         return iob;
2851 }
2852 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2853
2854 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2855                 char prot_type)
2856 {
2857         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2858         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2859         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2860                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2861 }
2862 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2863
2864 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2865                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2866                         unsigned long),
2867                 void *reply_param)
2868 {
2869         int rc;
2870         char prot_type;
2871
2872         QETH_CARD_TEXT(card, 4, "sendipa");
2873
2874         if (card->options.layer2)
2875                 if (card->info.type == QETH_CARD_TYPE_OSN)
2876                         prot_type = QETH_PROT_OSN2;
2877                 else
2878                         prot_type = QETH_PROT_LAYER2;
2879         else
2880                 prot_type = QETH_PROT_TCPIP;
2881         qeth_prepare_ipa_cmd(card, iob, prot_type);
2882         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2883                                                 iob, reply_cb, reply_param);
2884         if (rc == -ETIME) {
2885                 qeth_clear_ipacmd_list(card);
2886                 qeth_schedule_recovery(card);
2887         }
2888         return rc;
2889 }
2890 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2891
2892 int qeth_send_startlan(struct qeth_card *card)
2893 {
2894         int rc;
2895         struct qeth_cmd_buffer *iob;
2896
2897         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2898
2899         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2900         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2901         return rc;
2902 }
2903 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2904
2905 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2906                 struct qeth_reply *reply, unsigned long data)
2907 {
2908         struct qeth_ipa_cmd *cmd;
2909
2910         QETH_CARD_TEXT(card, 4, "defadpcb");
2911
2912         cmd = (struct qeth_ipa_cmd *) data;
2913         if (cmd->hdr.return_code == 0)
2914                 cmd->hdr.return_code =
2915                         cmd->data.setadapterparms.hdr.return_code;
2916         return 0;
2917 }
2918
2919 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2920                 struct qeth_reply *reply, unsigned long data)
2921 {
2922         struct qeth_ipa_cmd *cmd;
2923
2924         QETH_CARD_TEXT(card, 3, "quyadpcb");
2925
2926         cmd = (struct qeth_ipa_cmd *) data;
2927         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2928                 card->info.link_type =
2929                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2930                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2931         }
2932         card->options.adp.supported_funcs =
2933                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2934         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2935 }
2936
2937 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2938                 __u32 command, __u32 cmdlen)
2939 {
2940         struct qeth_cmd_buffer *iob;
2941         struct qeth_ipa_cmd *cmd;
2942
2943         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2944                                      QETH_PROT_IPV4);
2945         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2946         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2947         cmd->data.setadapterparms.hdr.command_code = command;
2948         cmd->data.setadapterparms.hdr.used_total = 1;
2949         cmd->data.setadapterparms.hdr.seq_no = 1;
2950
2951         return iob;
2952 }
2953
2954 int qeth_query_setadapterparms(struct qeth_card *card)
2955 {
2956         int rc;
2957         struct qeth_cmd_buffer *iob;
2958
2959         QETH_CARD_TEXT(card, 3, "queryadp");
2960         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2961                                    sizeof(struct qeth_ipacmd_setadpparms));
2962         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2963         return rc;
2964 }
2965 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2966
2967 static int qeth_query_ipassists_cb(struct qeth_card *card,
2968                 struct qeth_reply *reply, unsigned long data)
2969 {
2970         struct qeth_ipa_cmd *cmd;
2971
2972         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2973
2974         cmd = (struct qeth_ipa_cmd *) data;
2975
2976         switch (cmd->hdr.return_code) {
2977         case IPA_RC_NOTSUPP:
2978         case IPA_RC_L2_UNSUPPORTED_CMD:
2979                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
2980                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2981                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2982                 return -0;
2983         default:
2984                 if (cmd->hdr.return_code) {
2985                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
2986                                                 "rc=%d\n",
2987                                                 dev_name(&card->gdev->dev),
2988                                                 cmd->hdr.return_code);
2989                         return 0;
2990                 }
2991         }
2992
2993         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2994                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2995                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2996         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2997                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2998                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2999         } else
3000                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3001                                         "\n", dev_name(&card->gdev->dev));
3002         return 0;
3003 }
3004
3005 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3006 {
3007         int rc;
3008         struct qeth_cmd_buffer *iob;
3009
3010         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3011         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3012         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3013         return rc;
3014 }
3015 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3016
3017 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3018                 struct qeth_reply *reply, unsigned long data)
3019 {
3020         struct qeth_ipa_cmd *cmd;
3021         __u16 rc;
3022
3023         cmd = (struct qeth_ipa_cmd *)data;
3024         rc = cmd->hdr.return_code;
3025         if (rc)
3026                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3027         else
3028                 card->info.diagass_support = cmd->data.diagass.ext;
3029         return 0;
3030 }
3031
3032 static int qeth_query_setdiagass(struct qeth_card *card)
3033 {
3034         struct qeth_cmd_buffer *iob;
3035         struct qeth_ipa_cmd    *cmd;
3036
3037         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3038         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3039         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3040         cmd->data.diagass.subcmd_len = 16;
3041         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3042         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3043 }
3044
3045 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3046 {
3047         unsigned long info = get_zeroed_page(GFP_KERNEL);
3048         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3049         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3050         struct ccw_dev_id ccwid;
3051         int level;
3052
3053         tid->chpid = card->info.chpid;
3054         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3055         tid->ssid = ccwid.ssid;
3056         tid->devno = ccwid.devno;
3057         if (!info)
3058                 return;
3059         level = stsi(NULL, 0, 0, 0);
3060         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3061                 tid->lparnr = info222->lpar_number;
3062         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3063                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3064                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3065         }
3066         free_page(info);
3067         return;
3068 }
3069
3070 static int qeth_hw_trap_cb(struct qeth_card *card,
3071                 struct qeth_reply *reply, unsigned long data)
3072 {
3073         struct qeth_ipa_cmd *cmd;
3074         __u16 rc;
3075
3076         cmd = (struct qeth_ipa_cmd *)data;
3077         rc = cmd->hdr.return_code;
3078         if (rc)
3079                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3080         return 0;
3081 }
3082
3083 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3084 {
3085         struct qeth_cmd_buffer *iob;
3086         struct qeth_ipa_cmd *cmd;
3087
3088         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3089         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3090         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3091         cmd->data.diagass.subcmd_len = 80;
3092         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3093         cmd->data.diagass.type = 1;
3094         cmd->data.diagass.action = action;
3095         switch (action) {
3096         case QETH_DIAGS_TRAP_ARM:
3097                 cmd->data.diagass.options = 0x0003;
3098                 cmd->data.diagass.ext = 0x00010000 +
3099                         sizeof(struct qeth_trap_id);
3100                 qeth_get_trap_id(card,
3101                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3102                 break;
3103         case QETH_DIAGS_TRAP_DISARM:
3104                 cmd->data.diagass.options = 0x0001;
3105                 break;
3106         case QETH_DIAGS_TRAP_CAPTURE:
3107                 break;
3108         }
3109         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3110 }
3111 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3112
3113 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3114                 unsigned int qdio_error, const char *dbftext)
3115 {
3116         if (qdio_error) {
3117                 QETH_CARD_TEXT(card, 2, dbftext);
3118                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3119                                buf->element[15].sflags);
3120                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3121                                buf->element[14].sflags);
3122                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3123                 if ((buf->element[15].sflags) == 0x12) {
3124                         card->stats.rx_dropped++;
3125                         return 0;
3126                 } else
3127                         return 1;
3128         }
3129         return 0;
3130 }
3131 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3132
3133 void qeth_buffer_reclaim_work(struct work_struct *work)
3134 {
3135         struct qeth_card *card = container_of(work, struct qeth_card,
3136                 buffer_reclaim_work.work);
3137
3138         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3139         qeth_queue_input_buffer(card, card->reclaim_index);
3140 }
3141
3142 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3143 {
3144         struct qeth_qdio_q *queue = card->qdio.in_q;
3145         struct list_head *lh;
3146         int count;
3147         int i;
3148         int rc;
3149         int newcount = 0;
3150
3151         count = (index < queue->next_buf_to_init)?
3152                 card->qdio.in_buf_pool.buf_count -
3153                 (queue->next_buf_to_init - index) :
3154                 card->qdio.in_buf_pool.buf_count -
3155                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3156         /* only requeue at a certain threshold to avoid SIGAs */
3157         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3158                 for (i = queue->next_buf_to_init;
3159                      i < queue->next_buf_to_init + count; ++i) {
3160                         if (qeth_init_input_buffer(card,
3161                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3162                                 break;
3163                         } else {
3164                                 newcount++;
3165                         }
3166                 }
3167
3168                 if (newcount < count) {
3169                         /* we are in memory shortage so we switch back to
3170                            traditional skb allocation and drop packages */
3171                         atomic_set(&card->force_alloc_skb, 3);
3172                         count = newcount;
3173                 } else {
3174                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3175                 }
3176
3177                 if (!count) {
3178                         i = 0;
3179                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3180                                 i++;
3181                         if (i == card->qdio.in_buf_pool.buf_count) {
3182                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3183                                 card->reclaim_index = index;
3184                                 schedule_delayed_work(
3185                                         &card->buffer_reclaim_work,
3186                                         QETH_RECLAIM_WORK_TIME);
3187                         }
3188                         return;
3189                 }
3190
3191                 /*
3192                  * according to old code it should be avoided to requeue all
3193                  * 128 buffers in order to benefit from PCI avoidance.
3194                  * this function keeps at least one buffer (the buffer at
3195                  * 'index') un-requeued -> this buffer is the first buffer that
3196                  * will be requeued the next time
3197                  */
3198                 if (card->options.performance_stats) {
3199                         card->perf_stats.inbound_do_qdio_cnt++;
3200                         card->perf_stats.inbound_do_qdio_start_time =
3201                                 qeth_get_micros();
3202                 }
3203                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3204                              queue->next_buf_to_init, count);
3205                 if (card->options.performance_stats)
3206                         card->perf_stats.inbound_do_qdio_time +=
3207                                 qeth_get_micros() -
3208                                 card->perf_stats.inbound_do_qdio_start_time;
3209                 if (rc) {
3210                         QETH_CARD_TEXT(card, 2, "qinberr");
3211                 }
3212                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3213                                           QDIO_MAX_BUFFERS_PER_Q;
3214         }
3215 }
3216 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3217
3218 static int qeth_handle_send_error(struct qeth_card *card,
3219                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3220 {
3221         int sbalf15 = buffer->buffer->element[15].sflags;
3222
3223         QETH_CARD_TEXT(card, 6, "hdsnderr");
3224         if (card->info.type == QETH_CARD_TYPE_IQD) {
3225                 if (sbalf15 == 0) {
3226                         qdio_err = 0;
3227                 } else {
3228                         qdio_err = 1;
3229                 }
3230         }
3231         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3232
3233         if (!qdio_err)
3234                 return QETH_SEND_ERROR_NONE;
3235
3236         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3237                 return QETH_SEND_ERROR_RETRY;
3238
3239         QETH_CARD_TEXT(card, 1, "lnkfail");
3240         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3241                        (u16)qdio_err, (u8)sbalf15);
3242         return QETH_SEND_ERROR_LINK_FAILURE;
3243 }
3244
3245 /*
3246  * Switched to packing state if the number of used buffers on a queue
3247  * reaches a certain limit.
3248  */
3249 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3250 {
3251         if (!queue->do_pack) {
3252                 if (atomic_read(&queue->used_buffers)
3253                     >= QETH_HIGH_WATERMARK_PACK){
3254                         /* switch non-PACKING -> PACKING */
3255                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3256                         if (queue->card->options.performance_stats)
3257                                 queue->card->perf_stats.sc_dp_p++;
3258                         queue->do_pack = 1;
3259                 }
3260         }
3261 }
3262
3263 /*
3264  * Switches from packing to non-packing mode. If there is a packing
3265  * buffer on the queue this buffer will be prepared to be flushed.
3266  * In that case 1 is returned to inform the caller. If no buffer
3267  * has to be flushed, zero is returned.
3268  */
3269 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3270 {
3271         struct qeth_qdio_out_buffer *buffer;
3272         int flush_count = 0;
3273
3274         if (queue->do_pack) {
3275                 if (atomic_read(&queue->used_buffers)
3276                     <= QETH_LOW_WATERMARK_PACK) {
3277                         /* switch PACKING -> non-PACKING */
3278                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3279                         if (queue->card->options.performance_stats)
3280                                 queue->card->perf_stats.sc_p_dp++;
3281                         queue->do_pack = 0;
3282                         /* flush packing buffers */
3283                         buffer = queue->bufs[queue->next_buf_to_fill];
3284                         if ((atomic_read(&buffer->state) ==
3285                                                 QETH_QDIO_BUF_EMPTY) &&
3286                             (buffer->next_element_to_fill > 0)) {
3287                                 atomic_set(&buffer->state,
3288                                            QETH_QDIO_BUF_PRIMED);
3289                                 flush_count++;
3290                                 queue->next_buf_to_fill =
3291                                         (queue->next_buf_to_fill + 1) %
3292                                         QDIO_MAX_BUFFERS_PER_Q;
3293                         }
3294                 }
3295         }
3296         return flush_count;
3297 }
3298
3299
3300 /*
3301  * Called to flush a packing buffer if no more pci flags are on the queue.
3302  * Checks if there is a packing buffer and prepares it to be flushed.
3303  * In that case returns 1, otherwise zero.
3304  */
3305 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3306 {
3307         struct qeth_qdio_out_buffer *buffer;
3308
3309         buffer = queue->bufs[queue->next_buf_to_fill];
3310         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3311            (buffer->next_element_to_fill > 0)) {
3312                 /* it's a packing buffer */
3313                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3314                 queue->next_buf_to_fill =
3315                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3316                 return 1;
3317         }
3318         return 0;
3319 }
3320
3321 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3322                                int count)
3323 {
3324         struct qeth_qdio_out_buffer *buf;
3325         int rc;
3326         int i;
3327         unsigned int qdio_flags;
3328
3329         for (i = index; i < index + count; ++i) {
3330                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3331                 buf = queue->bufs[bidx];
3332                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3333                                 SBAL_EFLAGS_LAST_ENTRY;
3334
3335                 if (queue->bufstates)
3336                         queue->bufstates[bidx].user = buf;
3337
3338                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3339                         continue;
3340
3341                 if (!queue->do_pack) {
3342                         if ((atomic_read(&queue->used_buffers) >=
3343                                 (QETH_HIGH_WATERMARK_PACK -
3344                                  QETH_WATERMARK_PACK_FUZZ)) &&
3345                             !atomic_read(&queue->set_pci_flags_count)) {
3346                                 /* it's likely that we'll go to packing
3347                                  * mode soon */
3348                                 atomic_inc(&queue->set_pci_flags_count);
3349                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3350                         }
3351                 } else {
3352                         if (!atomic_read(&queue->set_pci_flags_count)) {
3353                                 /*
3354                                  * there's no outstanding PCI any more, so we
3355                                  * have to request a PCI to be sure the the PCI
3356                                  * will wake at some time in the future then we
3357                                  * can flush packed buffers that might still be
3358                                  * hanging around, which can happen if no
3359                                  * further send was requested by the stack
3360                                  */
3361                                 atomic_inc(&queue->set_pci_flags_count);
3362                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3363                         }
3364                 }
3365         }
3366
3367         queue->card->dev->trans_start = jiffies;
3368         if (queue->card->options.performance_stats) {
3369                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3370                 queue->card->perf_stats.outbound_do_qdio_start_time =
3371                         qeth_get_micros();
3372         }
3373         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3374         if (atomic_read(&queue->set_pci_flags_count))
3375                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3376         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3377                      queue->queue_no, index, count);
3378         if (queue->card->options.performance_stats)
3379                 queue->card->perf_stats.outbound_do_qdio_time +=
3380                         qeth_get_micros() -
3381                         queue->card->perf_stats.outbound_do_qdio_start_time;
3382         atomic_add(count, &queue->used_buffers);
3383         if (rc) {
3384                 queue->card->stats.tx_errors += count;
3385                 /* ignore temporary SIGA errors without busy condition */
3386                 if (rc == -ENOBUFS)
3387                         return;
3388                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3389                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3390                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3391                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3392                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3393
3394                 /* this must not happen under normal circumstances. if it
3395                  * happens something is really wrong -> recover */
3396                 qeth_schedule_recovery(queue->card);
3397                 return;
3398         }
3399         if (queue->card->options.performance_stats)
3400                 queue->card->perf_stats.bufs_sent += count;
3401 }
3402
3403 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3404 {
3405         int index;
3406         int flush_cnt = 0;
3407         int q_was_packing = 0;
3408
3409         /*
3410          * check if weed have to switch to non-packing mode or if
3411          * we have to get a pci flag out on the queue
3412          */
3413         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3414             !atomic_read(&queue->set_pci_flags_count)) {
3415                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3416                                 QETH_OUT_Q_UNLOCKED) {
3417                         /*
3418                          * If we get in here, there was no action in
3419                          * do_send_packet. So, we check if there is a
3420                          * packing buffer to be flushed here.
3421                          */
3422                         netif_stop_queue(queue->card->dev);
3423                         index = queue->next_buf_to_fill;
3424                         q_was_packing = queue->do_pack;
3425                         /* queue->do_pack may change */
3426                         barrier();
3427                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3428                         if (!flush_cnt &&
3429                             !atomic_read(&queue->set_pci_flags_count))
3430                                 flush_cnt +=
3431                                         qeth_flush_buffers_on_no_pci(queue);
3432                         if (queue->card->options.performance_stats &&
3433                             q_was_packing)
3434                                 queue->card->perf_stats.bufs_sent_pack +=
3435                                         flush_cnt;
3436                         if (flush_cnt)
3437                                 qeth_flush_buffers(queue, index, flush_cnt);
3438                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3439                 }
3440         }
3441 }
3442
3443 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3444                 unsigned long card_ptr)
3445 {
3446         struct qeth_card *card = (struct qeth_card *)card_ptr;
3447
3448         if (card->dev && (card->dev->flags & IFF_UP))
3449                 napi_schedule(&card->napi);
3450 }
3451 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3452
3453 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3454 {
3455         int rc;
3456
3457         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3458                 rc = -1;
3459                 goto out;
3460         } else {
3461                 if (card->options.cq == cq) {
3462                         rc = 0;
3463                         goto out;
3464                 }
3465
3466                 if (card->state != CARD_STATE_DOWN &&
3467                     card->state != CARD_STATE_RECOVER) {
3468                         rc = -1;
3469                         goto out;
3470                 }
3471
3472                 qeth_free_qdio_buffers(card);
3473                 card->options.cq = cq;
3474                 rc = 0;
3475         }
3476 out:
3477         return rc;
3478
3479 }
3480 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3481
3482
3483 static void qeth_qdio_cq_handler(struct qeth_card *card,
3484                 unsigned int qdio_err,
3485                 unsigned int queue, int first_element, int count) {
3486         struct qeth_qdio_q *cq = card->qdio.c_q;
3487         int i;
3488         int rc;
3489
3490         if (!qeth_is_cq(card, queue))
3491                 goto out;
3492
3493         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3494         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3495         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3496
3497         if (qdio_err) {
3498                 netif_stop_queue(card->dev);
3499                 qeth_schedule_recovery(card);
3500                 goto out;
3501         }
3502
3503         if (card->options.performance_stats) {
3504                 card->perf_stats.cq_cnt++;
3505                 card->perf_stats.cq_start_time = qeth_get_micros();
3506         }
3507
3508         for (i = first_element; i < first_element + count; ++i) {
3509                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3510                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3511                 int e;
3512
3513                 e = 0;
3514                 while (buffer->element[e].addr) {
3515                         unsigned long phys_aob_addr;
3516
3517                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3518                         qeth_qdio_handle_aob(card, phys_aob_addr);
3519                         buffer->element[e].addr = NULL;
3520                         buffer->element[e].eflags = 0;
3521                         buffer->element[e].sflags = 0;
3522                         buffer->element[e].length = 0;
3523
3524                         ++e;
3525                 }
3526
3527                 buffer->element[15].eflags = 0;
3528                 buffer->element[15].sflags = 0;
3529         }
3530         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3531                     card->qdio.c_q->next_buf_to_init,
3532                     count);
3533         if (rc) {
3534                 dev_warn(&card->gdev->dev,
3535                         "QDIO reported an error, rc=%i\n", rc);
3536                 QETH_CARD_TEXT(card, 2, "qcqherr");
3537         }
3538         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3539                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3540
3541         netif_wake_queue(card->dev);
3542
3543         if (card->options.performance_stats) {
3544                 int delta_t = qeth_get_micros();
3545                 delta_t -= card->perf_stats.cq_start_time;
3546                 card->perf_stats.cq_time += delta_t;
3547         }
3548 out:
3549         return;
3550 }
3551
3552 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3553                 unsigned int queue, int first_elem, int count,
3554                 unsigned long card_ptr)
3555 {
3556         struct qeth_card *card = (struct qeth_card *)card_ptr;
3557
3558         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3559         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3560
3561         if (qeth_is_cq(card, queue))
3562                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3563         else if (qdio_err)
3564                 qeth_schedule_recovery(card);
3565
3566
3567 }
3568 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3569
3570 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3571                 unsigned int qdio_error, int __queue, int first_element,
3572                 int count, unsigned long card_ptr)
3573 {
3574         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3575         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3576         struct qeth_qdio_out_buffer *buffer;
3577         int i;
3578
3579         QETH_CARD_TEXT(card, 6, "qdouhdl");
3580         if (qdio_error & QDIO_ERROR_FATAL) {
3581                 QETH_CARD_TEXT(card, 2, "achkcond");
3582                 netif_stop_queue(card->dev);
3583                 qeth_schedule_recovery(card);
3584                 return;
3585         }
3586         if (card->options.performance_stats) {
3587                 card->perf_stats.outbound_handler_cnt++;
3588                 card->perf_stats.outbound_handler_start_time =
3589                         qeth_get_micros();
3590         }
3591         for (i = first_element; i < (first_element + count); ++i) {
3592                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3593                 buffer = queue->bufs[bidx];
3594                 qeth_handle_send_error(card, buffer, qdio_error);
3595
3596                 if (queue->bufstates &&
3597                     (queue->bufstates[bidx].flags &
3598                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3599                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3600
3601                         if (atomic_cmpxchg(&buffer->state,
3602                                            QETH_QDIO_BUF_PRIMED,
3603                                            QETH_QDIO_BUF_PENDING) ==
3604                                 QETH_QDIO_BUF_PRIMED) {
3605                                 qeth_notify_skbs(queue, buffer,
3606                                                  TX_NOTIFY_PENDING);
3607                         }
3608                         buffer->aob = queue->bufstates[bidx].aob;
3609                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3610                         QETH_CARD_TEXT(queue->card, 5, "aob");
3611                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3612                                         virt_to_phys(buffer->aob));
3613                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3614                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3615                                 qeth_schedule_recovery(card);
3616                         }
3617                 } else {
3618                         if (card->options.cq == QETH_CQ_ENABLED) {
3619                                 enum iucv_tx_notify n;
3620
3621                                 n = qeth_compute_cq_notification(
3622                                         buffer->buffer->element[15].sflags, 0);
3623                                 qeth_notify_skbs(queue, buffer, n);
3624                         }
3625
3626                         qeth_clear_output_buffer(queue, buffer,
3627                                                 QETH_QDIO_BUF_EMPTY);
3628                 }
3629                 qeth_cleanup_handled_pending(queue, bidx, 0);
3630         }
3631         atomic_sub(count, &queue->used_buffers);
3632         /* check if we need to do something on this outbound queue */
3633         if (card->info.type != QETH_CARD_TYPE_IQD)
3634                 qeth_check_outbound_queue(queue);
3635
3636         netif_wake_queue(queue->card->dev);
3637         if (card->options.performance_stats)
3638                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3639                         card->perf_stats.outbound_handler_start_time;
3640 }
3641 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3642
3643 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3644                         int ipv, int cast_type)
3645 {
3646         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3647                      card->info.type == QETH_CARD_TYPE_OSX))
3648                 return card->qdio.default_out_queue;
3649         switch (card->qdio.no_out_queues) {
3650         case 4:
3651                 if (cast_type && card->info.is_multicast_different)
3652                         return card->info.is_multicast_different &
3653                                 (card->qdio.no_out_queues - 1);
3654                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3655                         const u8 tos = ip_hdr(skb)->tos;
3656
3657                         if (card->qdio.do_prio_queueing ==
3658                                 QETH_PRIO_Q_ING_TOS) {
3659                                 if (tos & IP_TOS_NOTIMPORTANT)
3660                                         return 3;
3661                                 if (tos & IP_TOS_HIGHRELIABILITY)
3662                                         return 2;
3663                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3664                                         return 1;
3665                                 if (tos & IP_TOS_LOWDELAY)
3666                                         return 0;
3667                         }
3668                         if (card->qdio.do_prio_queueing ==
3669                                 QETH_PRIO_Q_ING_PREC)
3670                                 return 3 - (tos >> 6);
3671                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3672                         /* TODO: IPv6!!! */
3673                 }
3674                 return card->qdio.default_out_queue;
3675         case 1: /* fallthrough for single-out-queue 1920-device */
3676         default:
3677                 return card->qdio.default_out_queue;
3678         }
3679 }
3680 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3681
3682 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3683                      struct sk_buff *skb, int elems)
3684 {
3685         int dlen = skb->len - skb->data_len;
3686         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3687                 PFN_DOWN((unsigned long)skb->data);
3688
3689         elements_needed += skb_shinfo(skb)->nr_frags;
3690         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3691                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3692                         "(Number=%d / Length=%d). Discarded.\n",
3693                         (elements_needed+elems), skb->len);
3694                 return 0;
3695         }
3696         return elements_needed;
3697 }
3698 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3699
3700 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3701 {
3702         int hroom, inpage, rest;
3703
3704         if (((unsigned long)skb->data & PAGE_MASK) !=
3705             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3706                 hroom = skb_headroom(skb);
3707                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3708                 rest = len - inpage;
3709                 if (rest > hroom)
3710                         return 1;
3711                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3712                 skb->data -= rest;
3713                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3714         }
3715         return 0;
3716 }
3717 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3718
3719 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3720         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3721         int offset)
3722 {
3723         int length = skb->len - skb->data_len;
3724         int length_here;
3725         int element;
3726         char *data;
3727         int first_lap, cnt;
3728         struct skb_frag_struct *frag;
3729
3730         element = *next_element_to_fill;
3731         data = skb->data;
3732         first_lap = (is_tso == 0 ? 1 : 0);
3733
3734         if (offset >= 0) {
3735                 data = skb->data + offset;
3736                 length -= offset;
3737                 first_lap = 0;
3738         }
3739
3740         while (length > 0) {
3741                 /* length_here is the remaining amount of data in this page */
3742                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3743                 if (length < length_here)
3744                         length_here = length;
3745
3746                 buffer->element[element].addr = data;
3747                 buffer->element[element].length = length_here;
3748                 length -= length_here;
3749                 if (!length) {
3750                         if (first_lap)
3751                                 if (skb_shinfo(skb)->nr_frags)
3752                                         buffer->element[element].eflags =
3753                                                 SBAL_EFLAGS_FIRST_FRAG;
3754                                 else
3755                                         buffer->element[element].eflags = 0;
3756                         else
3757                                 buffer->element[element].eflags =
3758                                     SBAL_EFLAGS_MIDDLE_FRAG;
3759                 } else {
3760                         if (first_lap)
3761                                 buffer->element[element].eflags =
3762                                     SBAL_EFLAGS_FIRST_FRAG;
3763                         else
3764                                 buffer->element[element].eflags =
3765                                     SBAL_EFLAGS_MIDDLE_FRAG;
3766                 }
3767                 data += length_here;
3768                 element++;
3769                 first_lap = 0;
3770         }
3771
3772         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3773                 frag = &skb_shinfo(skb)->frags[cnt];
3774                 buffer->element[element].addr = (char *)
3775                         page_to_phys(skb_frag_page(frag))
3776                         + frag->page_offset;
3777                 buffer->element[element].length = frag->size;
3778                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3779                 element++;
3780         }
3781
3782         if (buffer->element[element - 1].eflags)
3783                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3784         *next_element_to_fill = element;
3785 }
3786
3787 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3788                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3789                 struct qeth_hdr *hdr, int offset, int hd_len)
3790 {
3791         struct qdio_buffer *buffer;
3792         int flush_cnt = 0, hdr_len, large_send = 0;
3793
3794         buffer = buf->buffer;
3795         atomic_inc(&skb->users);
3796         skb_queue_tail(&buf->skb_list, skb);
3797
3798         /*check first on TSO ....*/
3799         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3800                 int element = buf->next_element_to_fill;
3801
3802                 hdr_len = sizeof(struct qeth_hdr_tso) +
3803                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3804                 /*fill first buffer entry only with header information */
3805                 buffer->element[element].addr = skb->data;
3806                 buffer->element[element].length = hdr_len;
3807                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3808                 buf->next_element_to_fill++;
3809                 skb->data += hdr_len;
3810                 skb->len  -= hdr_len;
3811                 large_send = 1;
3812         }
3813
3814         if (offset >= 0) {
3815                 int element = buf->next_element_to_fill;
3816                 buffer->element[element].addr = hdr;
3817                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3818                                                         hd_len;
3819                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3820                 buf->is_header[element] = 1;
3821                 buf->next_element_to_fill++;
3822         }
3823
3824         __qeth_fill_buffer(skb, buffer, large_send,
3825                 (int *)&buf->next_element_to_fill, offset);
3826
3827         if (!queue->do_pack) {
3828                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3829                 /* set state to PRIMED -> will be flushed */
3830                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3831                 flush_cnt = 1;
3832         } else {
3833                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3834                 if (queue->card->options.performance_stats)
3835                         queue->card->perf_stats.skbs_sent_pack++;
3836                 if (buf->next_element_to_fill >=
3837                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3838                         /*
3839                          * packed buffer if full -> set state PRIMED
3840                          * -> will be flushed
3841                          */
3842                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3843                         flush_cnt = 1;
3844                 }
3845         }
3846         return flush_cnt;
3847 }
3848
3849 int qeth_do_send_packet_fast(struct qeth_card *card,
3850                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3851                 struct qeth_hdr *hdr, int elements_needed,
3852                 int offset, int hd_len)
3853 {
3854         struct qeth_qdio_out_buffer *buffer;
3855         int index;
3856
3857         /* spin until we get the queue ... */
3858         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3859                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3860         /* ... now we've got the queue */
3861         index = queue->next_buf_to_fill;
3862         buffer = queue->bufs[queue->next_buf_to_fill];
3863         /*
3864          * check if buffer is empty to make sure that we do not 'overtake'
3865          * ourselves and try to fill a buffer that is already primed
3866          */
3867         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3868                 goto out;
3869         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3870                                           QDIO_MAX_BUFFERS_PER_Q;
3871         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3872         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3873         qeth_flush_buffers(queue, index, 1);
3874         return 0;
3875 out:
3876         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3877         return -EBUSY;
3878 }
3879 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3880
3881 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3882                 struct sk_buff *skb, struct qeth_hdr *hdr,
3883                 int elements_needed)
3884 {
3885         struct qeth_qdio_out_buffer *buffer;
3886         int start_index;
3887         int flush_count = 0;
3888         int do_pack = 0;
3889         int tmp;
3890         int rc = 0;
3891
3892         /* spin until we get the queue ... */
3893         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3894                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3895         start_index = queue->next_buf_to_fill;
3896         buffer = queue->bufs[queue->next_buf_to_fill];
3897         /*
3898          * check if buffer is empty to make sure that we do not 'overtake'
3899          * ourselves and try to fill a buffer that is already primed
3900          */
3901         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3902                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3903                 return -EBUSY;
3904         }
3905         /* check if we need to switch packing state of this queue */
3906         qeth_switch_to_packing_if_needed(queue);
3907         if (queue->do_pack) {
3908                 do_pack = 1;
3909                 /* does packet fit in current buffer? */
3910                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3911                     buffer->next_element_to_fill) < elements_needed) {
3912                         /* ... no -> set state PRIMED */
3913                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3914                         flush_count++;
3915                         queue->next_buf_to_fill =
3916                                 (queue->next_buf_to_fill + 1) %
3917                                 QDIO_MAX_BUFFERS_PER_Q;
3918                         buffer = queue->bufs[queue->next_buf_to_fill];
3919                         /* we did a step forward, so check buffer state
3920                          * again */
3921                         if (atomic_read(&buffer->state) !=
3922                             QETH_QDIO_BUF_EMPTY) {
3923                                 qeth_flush_buffers(queue, start_index,
3924                                                            flush_count);
3925                                 atomic_set(&queue->state,
3926                                                 QETH_OUT_Q_UNLOCKED);
3927                                 return -EBUSY;
3928                         }
3929                 }
3930         }
3931         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3932         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3933                                   QDIO_MAX_BUFFERS_PER_Q;
3934         flush_count += tmp;
3935         if (flush_count)
3936                 qeth_flush_buffers(queue, start_index, flush_count);
3937         else if (!atomic_read(&queue->set_pci_flags_count))
3938                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3939         /*
3940          * queue->state will go from LOCKED -> UNLOCKED or from
3941          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3942          * (switch packing state or flush buffer to get another pci flag out).
3943          * In that case we will enter this loop
3944          */
3945         while (atomic_dec_return(&queue->state)) {
3946                 flush_count = 0;
3947                 start_index = queue->next_buf_to_fill;
3948                 /* check if we can go back to non-packing state */
3949                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3950                 /*
3951                  * check if we need to flush a packing buffer to get a pci
3952                  * flag out on the queue
3953                  */
3954                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3955                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3956                 if (flush_count)
3957                         qeth_flush_buffers(queue, start_index, flush_count);
3958         }
3959         /* at this point the queue is UNLOCKED again */
3960         if (queue->card->options.performance_stats && do_pack)
3961                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3962
3963         return rc;
3964 }
3965 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3966
3967 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3968                 struct qeth_reply *reply, unsigned long data)
3969 {
3970         struct qeth_ipa_cmd *cmd;
3971         struct qeth_ipacmd_setadpparms *setparms;
3972
3973         QETH_CARD_TEXT(card, 4, "prmadpcb");
3974
3975         cmd = (struct qeth_ipa_cmd *) data;
3976         setparms = &(cmd->data.setadapterparms);
3977
3978         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3979         if (cmd->hdr.return_code) {
3980                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3981                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3982         }
3983         card->info.promisc_mode = setparms->data.mode;
3984         return 0;
3985 }
3986
3987 void qeth_setadp_promisc_mode(struct qeth_card *card)
3988 {
3989         enum qeth_ipa_promisc_modes mode;
3990         struct net_device *dev = card->dev;
3991         struct qeth_cmd_buffer *iob;
3992         struct qeth_ipa_cmd *cmd;
3993
3994         QETH_CARD_TEXT(card, 4, "setprom");
3995
3996         if (((dev->flags & IFF_PROMISC) &&
3997              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3998             (!(dev->flags & IFF_PROMISC) &&
3999              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4000                 return;
4001         mode = SET_PROMISC_MODE_OFF;
4002         if (dev->flags & IFF_PROMISC)
4003                 mode = SET_PROMISC_MODE_ON;
4004         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4005
4006         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4007                         sizeof(struct qeth_ipacmd_setadpparms));
4008         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4009         cmd->data.setadapterparms.data.mode = mode;
4010         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4011 }
4012 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4013
4014 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4015 {
4016         struct qeth_card *card;
4017         char dbf_text[15];
4018
4019         card = dev->ml_priv;
4020
4021         QETH_CARD_TEXT(card, 4, "chgmtu");
4022         sprintf(dbf_text, "%8x", new_mtu);
4023         QETH_CARD_TEXT(card, 4, dbf_text);
4024
4025         if (new_mtu < 64)
4026                 return -EINVAL;
4027         if (new_mtu > 65535)
4028                 return -EINVAL;
4029         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4030             (!qeth_mtu_is_valid(card, new_mtu)))
4031                 return -EINVAL;
4032         dev->mtu = new_mtu;
4033         return 0;
4034 }
4035 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4036
4037 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4038 {
4039         struct qeth_card *card;
4040
4041         card = dev->ml_priv;
4042
4043         QETH_CARD_TEXT(card, 5, "getstat");
4044
4045         return &card->stats;
4046 }
4047 EXPORT_SYMBOL_GPL(qeth_get_stats);
4048
4049 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4050                 struct qeth_reply *reply, unsigned long data)
4051 {
4052         struct qeth_ipa_cmd *cmd;
4053
4054         QETH_CARD_TEXT(card, 4, "chgmaccb");
4055
4056         cmd = (struct qeth_ipa_cmd *) data;
4057         if (!card->options.layer2 ||
4058             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4059                 memcpy(card->dev->dev_addr,
4060                        &cmd->data.setadapterparms.data.change_addr.addr,
4061                        OSA_ADDR_LEN);
4062                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4063         }
4064         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4065         return 0;
4066 }
4067
4068 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4069 {
4070         int rc;
4071         struct qeth_cmd_buffer *iob;
4072         struct qeth_ipa_cmd *cmd;
4073
4074         QETH_CARD_TEXT(card, 4, "chgmac");
4075
4076         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4077                                    sizeof(struct qeth_ipacmd_setadpparms));
4078         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4079         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4080         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4081         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4082                card->dev->dev_addr, OSA_ADDR_LEN);
4083         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4084                                NULL);
4085         return rc;
4086 }
4087 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4088
4089 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4090                 struct qeth_reply *reply, unsigned long data)
4091 {
4092         struct qeth_ipa_cmd *cmd;
4093         struct qeth_set_access_ctrl *access_ctrl_req;
4094         int fallback = *(int *)reply->param;
4095
4096         QETH_CARD_TEXT(card, 4, "setaccb");
4097
4098         cmd = (struct qeth_ipa_cmd *) data;
4099         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4100         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4101         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4102         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4103                 cmd->data.setadapterparms.hdr.return_code);
4104         if (cmd->data.setadapterparms.hdr.return_code !=
4105                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4106                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4107                                 card->gdev->dev.kobj.name,
4108                                 access_ctrl_req->subcmd_code,
4109                                 cmd->data.setadapterparms.hdr.return_code);
4110         switch (cmd->data.setadapterparms.hdr.return_code) {
4111         case SET_ACCESS_CTRL_RC_SUCCESS:
4112                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4113                         dev_info(&card->gdev->dev,
4114                             "QDIO data connection isolation is deactivated\n");
4115                 } else {
4116                         dev_info(&card->gdev->dev,
4117                             "QDIO data connection isolation is activated\n");
4118                 }
4119                 break;
4120         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4121                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4122                                 "deactivated\n", dev_name(&card->gdev->dev));
4123                 if (fallback)
4124                         card->options.isolation = card->options.prev_isolation;
4125                 break;
4126         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4127                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4128                                 " activated\n", dev_name(&card->gdev->dev));
4129                 if (fallback)
4130                         card->options.isolation = card->options.prev_isolation;
4131                 break;
4132         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4133                 dev_err(&card->gdev->dev, "Adapter does not "
4134                         "support QDIO data connection isolation\n");
4135                 break;
4136         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4137                 dev_err(&card->gdev->dev,
4138                         "Adapter is dedicated. "
4139                         "QDIO data connection isolation not supported\n");
4140                 if (fallback)
4141                         card->options.isolation = card->options.prev_isolation;
4142                 break;
4143         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4144                 dev_err(&card->gdev->dev,
4145                         "TSO does not permit QDIO data connection isolation\n");
4146                 if (fallback)
4147                         card->options.isolation = card->options.prev_isolation;
4148                 break;
4149         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4150                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4151                         "support reflective relay mode\n");
4152                 if (fallback)
4153                         card->options.isolation = card->options.prev_isolation;
4154                 break;
4155         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4156                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4157                                         "enabled at the adjacent switch port");
4158                 if (fallback)
4159                         card->options.isolation = card->options.prev_isolation;
4160                 break;
4161         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4162                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4163                                         "at the adjacent switch failed\n");
4164                 break;
4165         default:
4166                 /* this should never happen */
4167                 if (fallback)
4168                         card->options.isolation = card->options.prev_isolation;
4169                 break;
4170         }
4171         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4172         return 0;
4173 }
4174
4175 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4176                 enum qeth_ipa_isolation_modes isolation, int fallback)
4177 {
4178         int rc;
4179         struct qeth_cmd_buffer *iob;
4180         struct qeth_ipa_cmd *cmd;
4181         struct qeth_set_access_ctrl *access_ctrl_req;
4182
4183         QETH_CARD_TEXT(card, 4, "setacctl");
4184
4185         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4186         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4187
4188         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4189                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4190                                    sizeof(struct qeth_set_access_ctrl));
4191         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4192         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4193         access_ctrl_req->subcmd_code = isolation;
4194
4195         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4196                                &fallback);
4197         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4198         return rc;
4199 }
4200
4201 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4202 {
4203         int rc = 0;
4204
4205         QETH_CARD_TEXT(card, 4, "setactlo");
4206
4207         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4208              card->info.type == QETH_CARD_TYPE_OSX) &&
4209              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4210                 rc = qeth_setadpparms_set_access_ctrl(card,
4211                         card->options.isolation, fallback);
4212                 if (rc) {
4213                         QETH_DBF_MESSAGE(3,
4214                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4215                                 card->gdev->dev.kobj.name,
4216                                 rc);
4217                         rc = -EOPNOTSUPP;
4218                 }
4219         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4220                 card->options.isolation = ISOLATION_MODE_NONE;
4221
4222                 dev_err(&card->gdev->dev, "Adapter does not "
4223                         "support QDIO data connection isolation\n");
4224                 rc = -EOPNOTSUPP;
4225         }
4226         return rc;
4227 }
4228 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4229
4230 void qeth_tx_timeout(struct net_device *dev)
4231 {
4232         struct qeth_card *card;
4233
4234         card = dev->ml_priv;
4235         QETH_CARD_TEXT(card, 4, "txtimeo");
4236         card->stats.tx_errors++;
4237         qeth_schedule_recovery(card);
4238 }
4239 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4240
4241 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4242 {
4243         struct qeth_card *card = dev->ml_priv;
4244         int rc = 0;
4245
4246         switch (regnum) {
4247         case MII_BMCR: /* Basic mode control register */
4248                 rc = BMCR_FULLDPLX;
4249                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4250                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4251                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4252                         rc |= BMCR_SPEED100;
4253                 break;
4254         case MII_BMSR: /* Basic mode status register */
4255                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4256                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4257                      BMSR_100BASE4;
4258                 break;
4259         case MII_PHYSID1: /* PHYS ID 1 */
4260                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4261                      dev->dev_addr[2];
4262                 rc = (rc >> 5) & 0xFFFF;
4263                 break;
4264         case MII_PHYSID2: /* PHYS ID 2 */
4265                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4266                 break;
4267         case MII_ADVERTISE: /* Advertisement control reg */
4268                 rc = ADVERTISE_ALL;
4269                 break;
4270         case MII_LPA: /* Link partner ability reg */
4271                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4272                      LPA_100BASE4 | LPA_LPACK;
4273                 break;
4274         case MII_EXPANSION: /* Expansion register */
4275                 break;
4276         case MII_DCOUNTER: /* disconnect counter */
4277                 break;
4278         case MII_FCSCOUNTER: /* false carrier counter */
4279                 break;
4280         case MII_NWAYTEST: /* N-way auto-neg test register */
4281                 break;
4282         case MII_RERRCOUNTER: /* rx error counter */
4283                 rc = card->stats.rx_errors;
4284                 break;
4285         case MII_SREVISION: /* silicon revision */
4286                 break;
4287         case MII_RESV1: /* reserved 1 */
4288                 break;
4289         case MII_LBRERROR: /* loopback, rx, bypass error */
4290                 break;
4291         case MII_PHYADDR: /* physical address */
4292                 break;
4293         case MII_RESV2: /* reserved 2 */
4294                 break;
4295         case MII_TPISTATUS: /* TPI status for 10mbps */
4296                 break;
4297         case MII_NCONFIG: /* network interface config */
4298                 break;
4299         default:
4300                 break;
4301         }
4302         return rc;
4303 }
4304 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4305
4306 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4307                 struct qeth_cmd_buffer *iob, int len,
4308                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4309                         unsigned long),
4310                 void *reply_param)
4311 {
4312         u16 s1, s2;
4313
4314         QETH_CARD_TEXT(card, 4, "sendsnmp");
4315
4316         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4317         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4318                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4319         /* adjust PDU length fields in IPA_PDU_HEADER */
4320         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4321         s2 = (u32) len;
4322         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4323         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4324         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4325         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4326         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4327                                       reply_cb, reply_param);
4328 }
4329
4330 static int qeth_snmp_command_cb(struct qeth_card *card,
4331                 struct qeth_reply *reply, unsigned long sdata)
4332 {
4333         struct qeth_ipa_cmd *cmd;
4334         struct qeth_arp_query_info *qinfo;
4335         struct qeth_snmp_cmd *snmp;
4336         unsigned char *data;
4337         __u16 data_len;
4338
4339         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4340
4341         cmd = (struct qeth_ipa_cmd *) sdata;
4342         data = (unsigned char *)((char *)cmd - reply->offset);
4343         qinfo = (struct qeth_arp_query_info *) reply->param;
4344         snmp = &cmd->data.setadapterparms.data.snmp;
4345
4346         if (cmd->hdr.return_code) {
4347                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4348                 return 0;
4349         }
4350         if (cmd->data.setadapterparms.hdr.return_code) {
4351                 cmd->hdr.return_code =
4352                         cmd->data.setadapterparms.hdr.return_code;
4353                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4354                 return 0;
4355         }
4356         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4357         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4358                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4359         else
4360                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4361
4362         /* check if there is enough room in userspace */
4363         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4364                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4365                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4366                 return 0;
4367         }
4368         QETH_CARD_TEXT_(card, 4, "snore%i",
4369                        cmd->data.setadapterparms.hdr.used_total);
4370         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4371                 cmd->data.setadapterparms.hdr.seq_no);
4372         /*copy entries to user buffer*/
4373         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4374                 memcpy(qinfo->udata + qinfo->udata_offset,
4375                        (char *)snmp,
4376                        data_len + offsetof(struct qeth_snmp_cmd, data));
4377                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4378         } else {
4379                 memcpy(qinfo->udata + qinfo->udata_offset,
4380                        (char *)&snmp->request, data_len);
4381         }
4382         qinfo->udata_offset += data_len;
4383         /* check if all replies received ... */
4384                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4385                                cmd->data.setadapterparms.hdr.used_total);
4386                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4387                                cmd->data.setadapterparms.hdr.seq_no);
4388         if (cmd->data.setadapterparms.hdr.seq_no <
4389             cmd->data.setadapterparms.hdr.used_total)
4390                 return 1;
4391         return 0;
4392 }
4393
4394 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4395 {
4396         struct qeth_cmd_buffer *iob;
4397         struct qeth_ipa_cmd *cmd;
4398         struct qeth_snmp_ureq *ureq;
4399         int req_len;
4400         struct qeth_arp_query_info qinfo = {0, };
4401         int rc = 0;
4402
4403         QETH_CARD_TEXT(card, 3, "snmpcmd");
4404
4405         if (card->info.guestlan)
4406                 return -EOPNOTSUPP;
4407
4408         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4409             (!card->options.layer2)) {
4410                 return -EOPNOTSUPP;
4411         }
4412         /* skip 4 bytes (data_len struct member) to get req_len */
4413         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4414                 return -EFAULT;
4415         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4416         if (IS_ERR(ureq)) {
4417                 QETH_CARD_TEXT(card, 2, "snmpnome");
4418                 return PTR_ERR(ureq);
4419         }
4420         qinfo.udata_len = ureq->hdr.data_len;
4421         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4422         if (!qinfo.udata) {
4423                 kfree(ureq);
4424                 return -ENOMEM;
4425         }
4426         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4427
4428         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4429                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4430         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4431         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4432         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4433                                     qeth_snmp_command_cb, (void *)&qinfo);
4434         if (rc)
4435                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4436                            QETH_CARD_IFNAME(card), rc);
4437         else {
4438                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4439                         rc = -EFAULT;
4440         }
4441
4442         kfree(ureq);
4443         kfree(qinfo.udata);
4444         return rc;
4445 }
4446 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4447
4448 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4449                 struct qeth_reply *reply, unsigned long data)
4450 {
4451         struct qeth_ipa_cmd *cmd;
4452         struct qeth_qoat_priv *priv;
4453         char *resdata;
4454         int resdatalen;
4455
4456         QETH_CARD_TEXT(card, 3, "qoatcb");
4457
4458         cmd = (struct qeth_ipa_cmd *)data;
4459         priv = (struct qeth_qoat_priv *)reply->param;
4460         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4461         resdata = (char *)data + 28;
4462
4463         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4464                 cmd->hdr.return_code = IPA_RC_FFFF;
4465                 return 0;
4466         }
4467
4468         memcpy((priv->buffer + priv->response_len), resdata,
4469                 resdatalen);
4470         priv->response_len += resdatalen;
4471
4472         if (cmd->data.setadapterparms.hdr.seq_no <
4473             cmd->data.setadapterparms.hdr.used_total)
4474                 return 1;
4475         return 0;
4476 }
4477
4478 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4479 {
4480         int rc = 0;
4481         struct qeth_cmd_buffer *iob;
4482         struct qeth_ipa_cmd *cmd;
4483         struct qeth_query_oat *oat_req;
4484         struct qeth_query_oat_data oat_data;
4485         struct qeth_qoat_priv priv;
4486         void __user *tmp;
4487
4488         QETH_CARD_TEXT(card, 3, "qoatcmd");
4489
4490         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4491                 rc = -EOPNOTSUPP;
4492                 goto out;
4493         }
4494
4495         if (copy_from_user(&oat_data, udata,
4496             sizeof(struct qeth_query_oat_data))) {
4497                         rc = -EFAULT;
4498                         goto out;
4499         }
4500
4501         priv.buffer_len = oat_data.buffer_len;
4502         priv.response_len = 0;
4503         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4504         if (!priv.buffer) {
4505                 rc = -ENOMEM;
4506                 goto out;
4507         }
4508
4509         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4510                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4511                                    sizeof(struct qeth_query_oat));
4512         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4513         oat_req = &cmd->data.setadapterparms.data.query_oat;
4514         oat_req->subcmd_code = oat_data.command;
4515
4516         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4517                                &priv);
4518         if (!rc) {
4519                 if (is_compat_task())
4520                         tmp = compat_ptr(oat_data.ptr);
4521                 else
4522                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4523
4524                 if (copy_to_user(tmp, priv.buffer,
4525                     priv.response_len)) {
4526                         rc = -EFAULT;
4527                         goto out_free;
4528                 }
4529
4530                 oat_data.response_len = priv.response_len;
4531
4532                 if (copy_to_user(udata, &oat_data,
4533                     sizeof(struct qeth_query_oat_data)))
4534                         rc = -EFAULT;
4535         } else
4536                 if (rc == IPA_RC_FFFF)
4537                         rc = -EFAULT;
4538
4539 out_free:
4540         kfree(priv.buffer);
4541 out:
4542         return rc;
4543 }
4544 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4545
4546 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4547 {
4548         switch (card->info.type) {
4549         case QETH_CARD_TYPE_IQD:
4550                 return 2;
4551         default:
4552                 return 0;
4553         }
4554 }
4555
4556 static void qeth_determine_capabilities(struct qeth_card *card)
4557 {
4558         int rc;
4559         int length;
4560         char *prcd;
4561         struct ccw_device *ddev;
4562         int ddev_offline = 0;
4563
4564         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4565         ddev = CARD_DDEV(card);
4566         if (!ddev->online) {
4567                 ddev_offline = 1;
4568                 rc = ccw_device_set_online(ddev);
4569                 if (rc) {
4570                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4571                         goto out;
4572                 }
4573         }
4574
4575         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4576         if (rc) {
4577                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4578                         dev_name(&card->gdev->dev), rc);
4579                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4580                 goto out_offline;
4581         }
4582         qeth_configure_unitaddr(card, prcd);
4583         if (ddev_offline)
4584                 qeth_configure_blkt_default(card, prcd);
4585         kfree(prcd);
4586
4587         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4588         if (rc)
4589                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4590
4591         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4592         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4593         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4594         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4595         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4596             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4597             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4598                 dev_info(&card->gdev->dev,
4599                         "Completion Queueing supported\n");
4600         } else {
4601                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4602         }
4603
4604
4605 out_offline:
4606         if (ddev_offline == 1)
4607                 ccw_device_set_offline(ddev);
4608 out:
4609         return;
4610 }
4611
4612 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4613         struct qdio_buffer **in_sbal_ptrs,
4614         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4615         int i;
4616
4617         if (card->options.cq == QETH_CQ_ENABLED) {
4618                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4619                              (card->qdio.no_in_queues - 1);
4620                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4621                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4622                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4623                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4624                 }
4625
4626                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4627         }
4628 }
4629
4630 static int qeth_qdio_establish(struct qeth_card *card)
4631 {
4632         struct qdio_initialize init_data;
4633         char *qib_param_field;
4634         struct qdio_buffer **in_sbal_ptrs;
4635         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4636         struct qdio_buffer **out_sbal_ptrs;
4637         int i, j, k;
4638         int rc = 0;
4639
4640         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4641
4642         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4643                               GFP_KERNEL);
4644         if (!qib_param_field) {
4645                 rc =  -ENOMEM;
4646                 goto out_free_nothing;
4647         }
4648
4649         qeth_create_qib_param_field(card, qib_param_field);
4650         qeth_create_qib_param_field_blkt(card, qib_param_field);
4651
4652         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4653                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4654                                GFP_KERNEL);
4655         if (!in_sbal_ptrs) {
4656                 rc = -ENOMEM;
4657                 goto out_free_qib_param;
4658         }
4659         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4660                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4661                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4662         }
4663
4664         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4665                                    GFP_KERNEL);
4666         if (!queue_start_poll) {
4667                 rc = -ENOMEM;
4668                 goto out_free_in_sbals;
4669         }
4670         for (i = 0; i < card->qdio.no_in_queues; ++i)
4671                 queue_start_poll[i] = card->discipline->start_poll;
4672
4673         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4674
4675         out_sbal_ptrs =
4676                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4677                         sizeof(void *), GFP_KERNEL);
4678         if (!out_sbal_ptrs) {
4679                 rc = -ENOMEM;
4680                 goto out_free_queue_start_poll;
4681         }
4682         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4683                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4684                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4685                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4686                 }
4687
4688         memset(&init_data, 0, sizeof(struct qdio_initialize));
4689         init_data.cdev                   = CARD_DDEV(card);
4690         init_data.q_format               = qeth_get_qdio_q_format(card);
4691         init_data.qib_param_field_format = 0;
4692         init_data.qib_param_field        = qib_param_field;
4693         init_data.no_input_qs            = card->qdio.no_in_queues;
4694         init_data.no_output_qs           = card->qdio.no_out_queues;
4695         init_data.input_handler          = card->discipline->input_handler;
4696         init_data.output_handler         = card->discipline->output_handler;
4697         init_data.queue_start_poll_array = queue_start_poll;
4698         init_data.int_parm               = (unsigned long) card;
4699         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4700         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4701         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4702         init_data.scan_threshold =
4703                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4704
4705         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4706                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4707                 rc = qdio_allocate(&init_data);
4708                 if (rc) {
4709                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4710                         goto out;
4711                 }
4712                 rc = qdio_establish(&init_data);
4713                 if (rc) {
4714                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4715                         qdio_free(CARD_DDEV(card));
4716                 }
4717         }
4718
4719         switch (card->options.cq) {
4720         case QETH_CQ_ENABLED:
4721                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4722                 break;
4723         case QETH_CQ_DISABLED:
4724                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4725                 break;
4726         default:
4727                 break;
4728         }
4729 out:
4730         kfree(out_sbal_ptrs);
4731 out_free_queue_start_poll:
4732         kfree(queue_start_poll);
4733 out_free_in_sbals:
4734         kfree(in_sbal_ptrs);
4735 out_free_qib_param:
4736         kfree(qib_param_field);
4737 out_free_nothing:
4738         return rc;
4739 }
4740
4741 static void qeth_core_free_card(struct qeth_card *card)
4742 {
4743
4744         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4745         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4746         qeth_clean_channel(&card->read);
4747         qeth_clean_channel(&card->write);
4748         if (card->dev)
4749                 free_netdev(card->dev);
4750         kfree(card->ip_tbd_list);
4751         qeth_free_qdio_buffers(card);
4752         unregister_service_level(&card->qeth_service_level);
4753         kfree(card);
4754 }
4755
4756 void qeth_trace_features(struct qeth_card *card)
4757 {
4758         QETH_CARD_TEXT(card, 2, "features");
4759         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4760         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4761         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4762         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4763         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4764         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4765         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4766 }
4767 EXPORT_SYMBOL_GPL(qeth_trace_features);
4768
4769 static struct ccw_device_id qeth_ids[] = {
4770         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4771                                         .driver_info = QETH_CARD_TYPE_OSD},
4772         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4773                                         .driver_info = QETH_CARD_TYPE_IQD},
4774         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4775                                         .driver_info = QETH_CARD_TYPE_OSN},
4776         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4777                                         .driver_info = QETH_CARD_TYPE_OSM},
4778         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4779                                         .driver_info = QETH_CARD_TYPE_OSX},
4780         {},
4781 };
4782 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4783
4784 static struct ccw_driver qeth_ccw_driver = {
4785         .driver = {
4786                 .owner = THIS_MODULE,
4787                 .name = "qeth",
4788         },
4789         .ids = qeth_ids,
4790         .probe = ccwgroup_probe_ccwdev,
4791         .remove = ccwgroup_remove_ccwdev,
4792 };
4793
4794 int qeth_core_hardsetup_card(struct qeth_card *card)
4795 {
4796         int retries = 3;
4797         int rc;
4798
4799         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4800         atomic_set(&card->force_alloc_skb, 0);
4801         qeth_update_from_chp_desc(card);
4802 retry:
4803         if (retries < 3)
4804                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4805                         dev_name(&card->gdev->dev));
4806         ccw_device_set_offline(CARD_DDEV(card));
4807         ccw_device_set_offline(CARD_WDEV(card));
4808         ccw_device_set_offline(CARD_RDEV(card));
4809         rc = ccw_device_set_online(CARD_RDEV(card));
4810         if (rc)
4811                 goto retriable;
4812         rc = ccw_device_set_online(CARD_WDEV(card));
4813         if (rc)
4814                 goto retriable;
4815         rc = ccw_device_set_online(CARD_DDEV(card));
4816         if (rc)
4817                 goto retriable;
4818         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4819 retriable:
4820         if (rc == -ERESTARTSYS) {
4821                 QETH_DBF_TEXT(SETUP, 2, "break1");
4822                 return rc;
4823         } else if (rc) {
4824                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4825                 if (--retries < 0)
4826                         goto out;
4827                 else
4828                         goto retry;
4829         }
4830         qeth_determine_capabilities(card);
4831         qeth_init_tokens(card);
4832         qeth_init_func_level(card);
4833         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4834         if (rc == -ERESTARTSYS) {
4835                 QETH_DBF_TEXT(SETUP, 2, "break2");
4836                 return rc;
4837         } else if (rc) {
4838                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4839                 if (--retries < 0)
4840                         goto out;
4841                 else
4842                         goto retry;
4843         }
4844         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4845         if (rc == -ERESTARTSYS) {
4846                 QETH_DBF_TEXT(SETUP, 2, "break3");
4847                 return rc;
4848         } else if (rc) {
4849                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4850                 if (--retries < 0)
4851                         goto out;
4852                 else
4853                         goto retry;
4854         }
4855         card->read_or_write_problem = 0;
4856         rc = qeth_mpc_initialize(card);
4857         if (rc) {
4858                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4859                 goto out;
4860         }
4861
4862         card->options.ipa4.supported_funcs = 0;
4863         card->options.adp.supported_funcs = 0;
4864         card->info.diagass_support = 0;
4865         qeth_query_ipassists(card, QETH_PROT_IPV4);
4866         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4867                 qeth_query_setadapterparms(card);
4868         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4869                 qeth_query_setdiagass(card);
4870         return 0;
4871 out:
4872         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4873                 "an error on the device\n");
4874         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4875                 dev_name(&card->gdev->dev), rc);
4876         return rc;
4877 }
4878 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4879
4880 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4881                 struct qdio_buffer_element *element,
4882                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4883 {
4884         struct page *page = virt_to_page(element->addr);
4885         if (*pskb == NULL) {
4886                 if (qethbuffer->rx_skb) {
4887                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4888                         *pskb = qethbuffer->rx_skb;
4889                         qethbuffer->rx_skb = NULL;
4890                 } else {
4891                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4892                         if (!(*pskb))
4893                                 return -ENOMEM;
4894                 }
4895
4896                 skb_reserve(*pskb, ETH_HLEN);
4897                 if (data_len <= QETH_RX_PULL_LEN) {
4898                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4899                                 data_len);
4900                 } else {
4901                         get_page(page);
4902                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4903                                element->addr + offset, QETH_RX_PULL_LEN);
4904                         skb_fill_page_desc(*pskb, *pfrag, page,
4905                                 offset + QETH_RX_PULL_LEN,
4906                                 data_len - QETH_RX_PULL_LEN);
4907                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4908                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4909                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4910                         (*pfrag)++;
4911                 }
4912         } else {
4913                 get_page(page);
4914                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4915                 (*pskb)->data_len += data_len;
4916                 (*pskb)->len      += data_len;
4917                 (*pskb)->truesize += data_len;
4918                 (*pfrag)++;
4919         }
4920
4921
4922         return 0;
4923 }
4924
4925 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4926                 struct qeth_qdio_buffer *qethbuffer,
4927                 struct qdio_buffer_element **__element, int *__offset,
4928                 struct qeth_hdr **hdr)
4929 {
4930         struct qdio_buffer_element *element = *__element;
4931         struct qdio_buffer *buffer = qethbuffer->buffer;
4932         int offset = *__offset;
4933         struct sk_buff *skb = NULL;
4934         int skb_len = 0;
4935         void *data_ptr;
4936         int data_len;
4937         int headroom = 0;
4938         int use_rx_sg = 0;
4939         int frag = 0;
4940
4941         /* qeth_hdr must not cross element boundaries */
4942         if (element->length < offset + sizeof(struct qeth_hdr)) {
4943                 if (qeth_is_last_sbale(element))
4944                         return NULL;
4945                 element++;
4946                 offset = 0;
4947                 if (element->length < sizeof(struct qeth_hdr))
4948                         return NULL;
4949         }
4950         *hdr = element->addr + offset;
4951
4952         offset += sizeof(struct qeth_hdr);
4953         switch ((*hdr)->hdr.l2.id) {
4954         case QETH_HEADER_TYPE_LAYER2:
4955                 skb_len = (*hdr)->hdr.l2.pkt_length;
4956                 break;
4957         case QETH_HEADER_TYPE_LAYER3:
4958                 skb_len = (*hdr)->hdr.l3.length;
4959                 headroom = ETH_HLEN;
4960                 break;
4961         case QETH_HEADER_TYPE_OSN:
4962                 skb_len = (*hdr)->hdr.osn.pdu_length;
4963                 headroom = sizeof(struct qeth_hdr);
4964                 break;
4965         default:
4966                 break;
4967         }
4968
4969         if (!skb_len)
4970                 return NULL;
4971
4972         if (((skb_len >= card->options.rx_sg_cb) &&
4973              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4974              (!atomic_read(&card->force_alloc_skb))) ||
4975             (card->options.cq == QETH_CQ_ENABLED)) {
4976                 use_rx_sg = 1;
4977         } else {
4978                 skb = dev_alloc_skb(skb_len + headroom);
4979                 if (!skb)
4980                         goto no_mem;
4981                 if (headroom)
4982                         skb_reserve(skb, headroom);
4983         }
4984
4985         data_ptr = element->addr + offset;
4986         while (skb_len) {
4987                 data_len = min(skb_len, (int)(element->length - offset));
4988                 if (data_len) {
4989                         if (use_rx_sg) {
4990                                 if (qeth_create_skb_frag(qethbuffer, element,
4991                                     &skb, offset, &frag, data_len))
4992                                         goto no_mem;
4993                         } else {
4994                                 memcpy(skb_put(skb, data_len), data_ptr,
4995                                         data_len);
4996                         }
4997                 }
4998                 skb_len -= data_len;
4999                 if (skb_len) {
5000                         if (qeth_is_last_sbale(element)) {
5001                                 QETH_CARD_TEXT(card, 4, "unexeob");
5002                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5003                                 dev_kfree_skb_any(skb);
5004                                 card->stats.rx_errors++;
5005                                 return NULL;
5006                         }
5007                         element++;
5008                         offset = 0;
5009                         data_ptr = element->addr;
5010                 } else {
5011                         offset += data_len;
5012                 }
5013         }
5014         *__element = element;
5015         *__offset = offset;
5016         if (use_rx_sg && card->options.performance_stats) {
5017                 card->perf_stats.sg_skbs_rx++;
5018                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5019         }
5020         return skb;
5021 no_mem:
5022         if (net_ratelimit()) {
5023                 QETH_CARD_TEXT(card, 2, "noskbmem");
5024         }
5025         card->stats.rx_dropped++;
5026         return NULL;
5027 }
5028 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5029
5030 static void qeth_unregister_dbf_views(void)
5031 {
5032         int x;
5033         for (x = 0; x < QETH_DBF_INFOS; x++) {
5034                 debug_unregister(qeth_dbf[x].id);
5035                 qeth_dbf[x].id = NULL;
5036         }
5037 }
5038
5039 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5040 {
5041         char dbf_txt_buf[32];
5042         va_list args;
5043
5044         if (level > id->level)
5045                 return;
5046         va_start(args, fmt);
5047         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5048         va_end(args);
5049         debug_text_event(id, level, dbf_txt_buf);
5050 }
5051 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5052
5053 static int qeth_register_dbf_views(void)
5054 {
5055         int ret;
5056         int x;
5057
5058         for (x = 0; x < QETH_DBF_INFOS; x++) {
5059                 /* register the areas */
5060                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5061                                                 qeth_dbf[x].pages,
5062                                                 qeth_dbf[x].areas,
5063                                                 qeth_dbf[x].len);
5064                 if (qeth_dbf[x].id == NULL) {
5065                         qeth_unregister_dbf_views();
5066                         return -ENOMEM;
5067                 }
5068
5069                 /* register a view */
5070                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5071                 if (ret) {
5072                         qeth_unregister_dbf_views();
5073                         return ret;
5074                 }
5075
5076                 /* set a passing level */
5077                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5078         }
5079
5080         return 0;
5081 }
5082
5083 int qeth_core_load_discipline(struct qeth_card *card,
5084                 enum qeth_discipline_id discipline)
5085 {
5086         int rc = 0;
5087         mutex_lock(&qeth_mod_mutex);
5088         switch (discipline) {
5089         case QETH_DISCIPLINE_LAYER3:
5090                 card->discipline = try_then_request_module(
5091                         symbol_get(qeth_l3_discipline), "qeth_l3");
5092                 break;
5093         case QETH_DISCIPLINE_LAYER2:
5094                 card->discipline = try_then_request_module(
5095                         symbol_get(qeth_l2_discipline), "qeth_l2");
5096                 break;
5097         }
5098         if (!card->discipline) {
5099                 dev_err(&card->gdev->dev, "There is no kernel module to "
5100                         "support discipline %d\n", discipline);
5101                 rc = -EINVAL;
5102         }
5103         mutex_unlock(&qeth_mod_mutex);
5104         return rc;
5105 }
5106
5107 void qeth_core_free_discipline(struct qeth_card *card)
5108 {
5109         if (card->options.layer2)
5110                 symbol_put(qeth_l2_discipline);
5111         else
5112                 symbol_put(qeth_l3_discipline);
5113         card->discipline = NULL;
5114 }
5115
5116 static const struct device_type qeth_generic_devtype = {
5117         .name = "qeth_generic",
5118         .groups = qeth_generic_attr_groups,
5119 };
5120 static const struct device_type qeth_osn_devtype = {
5121         .name = "qeth_osn",
5122         .groups = qeth_osn_attr_groups,
5123 };
5124
5125 #define DBF_NAME_LEN    20
5126
5127 struct qeth_dbf_entry {
5128         char dbf_name[DBF_NAME_LEN];
5129         debug_info_t *dbf_info;
5130         struct list_head dbf_list;
5131 };
5132
5133 static LIST_HEAD(qeth_dbf_list);
5134 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5135
5136 static debug_info_t *qeth_get_dbf_entry(char *name)
5137 {
5138         struct qeth_dbf_entry *entry;
5139         debug_info_t *rc = NULL;
5140
5141         mutex_lock(&qeth_dbf_list_mutex);
5142         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5143                 if (strcmp(entry->dbf_name, name) == 0) {
5144                         rc = entry->dbf_info;
5145                         break;
5146                 }
5147         }
5148         mutex_unlock(&qeth_dbf_list_mutex);
5149         return rc;
5150 }
5151
5152 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5153 {
5154         struct qeth_dbf_entry *new_entry;
5155
5156         card->debug = debug_register(name, 2, 1, 8);
5157         if (!card->debug) {
5158                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5159                 goto err;
5160         }
5161         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5162                 goto err_dbg;
5163         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5164         if (!new_entry)
5165                 goto err_dbg;
5166         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5167         new_entry->dbf_info = card->debug;
5168         mutex_lock(&qeth_dbf_list_mutex);
5169         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5170         mutex_unlock(&qeth_dbf_list_mutex);
5171
5172         return 0;
5173
5174 err_dbg:
5175         debug_unregister(card->debug);
5176 err:
5177         return -ENOMEM;
5178 }
5179
5180 static void qeth_clear_dbf_list(void)
5181 {
5182         struct qeth_dbf_entry *entry, *tmp;
5183
5184         mutex_lock(&qeth_dbf_list_mutex);
5185         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5186                 list_del(&entry->dbf_list);
5187                 debug_unregister(entry->dbf_info);
5188                 kfree(entry);
5189         }
5190         mutex_unlock(&qeth_dbf_list_mutex);
5191 }
5192
5193 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5194 {
5195         struct qeth_card *card;
5196         struct device *dev;
5197         int rc;
5198         unsigned long flags;
5199         char dbf_name[DBF_NAME_LEN];
5200
5201         QETH_DBF_TEXT(SETUP, 2, "probedev");
5202
5203         dev = &gdev->dev;
5204         if (!get_device(dev))
5205                 return -ENODEV;
5206
5207         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5208
5209         card = qeth_alloc_card();
5210         if (!card) {
5211                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5212                 rc = -ENOMEM;
5213                 goto err_dev;
5214         }
5215
5216         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5217                 dev_name(&gdev->dev));
5218         card->debug = qeth_get_dbf_entry(dbf_name);
5219         if (!card->debug) {
5220                 rc = qeth_add_dbf_entry(card, dbf_name);
5221                 if (rc)
5222                         goto err_card;
5223         }
5224
5225         card->read.ccwdev  = gdev->cdev[0];
5226         card->write.ccwdev = gdev->cdev[1];
5227         card->data.ccwdev  = gdev->cdev[2];
5228         dev_set_drvdata(&gdev->dev, card);
5229         card->gdev = gdev;
5230         gdev->cdev[0]->handler = qeth_irq;
5231         gdev->cdev[1]->handler = qeth_irq;
5232         gdev->cdev[2]->handler = qeth_irq;
5233
5234         rc = qeth_determine_card_type(card);
5235         if (rc) {
5236                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5237                 goto err_card;
5238         }
5239         rc = qeth_setup_card(card);
5240         if (rc) {
5241                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5242                 goto err_card;
5243         }
5244
5245         if (card->info.type == QETH_CARD_TYPE_OSN)
5246                 gdev->dev.type = &qeth_osn_devtype;
5247         else
5248                 gdev->dev.type = &qeth_generic_devtype;
5249
5250         switch (card->info.type) {
5251         case QETH_CARD_TYPE_OSN:
5252         case QETH_CARD_TYPE_OSM:
5253                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5254                 if (rc)
5255                         goto err_card;
5256                 rc = card->discipline->setup(card->gdev);
5257                 if (rc)
5258                         goto err_disc;
5259         case QETH_CARD_TYPE_OSD:
5260         case QETH_CARD_TYPE_OSX:
5261         default:
5262                 break;
5263         }
5264
5265         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5266         list_add_tail(&card->list, &qeth_core_card_list.list);
5267         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5268
5269         qeth_determine_capabilities(card);
5270         return 0;
5271
5272 err_disc:
5273         qeth_core_free_discipline(card);
5274 err_card:
5275         qeth_core_free_card(card);
5276 err_dev:
5277         put_device(dev);
5278         return rc;
5279 }
5280
5281 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5282 {
5283         unsigned long flags;
5284         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5285
5286         QETH_DBF_TEXT(SETUP, 2, "removedv");
5287
5288         if (card->discipline) {
5289                 card->discipline->remove(gdev);
5290                 qeth_core_free_discipline(card);
5291         }
5292
5293         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5294         list_del(&card->list);
5295         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5296         qeth_core_free_card(card);
5297         dev_set_drvdata(&gdev->dev, NULL);
5298         put_device(&gdev->dev);
5299         return;
5300 }
5301
5302 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5303 {
5304         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5305         int rc = 0;
5306         int def_discipline;
5307
5308         if (!card->discipline) {
5309                 if (card->info.type == QETH_CARD_TYPE_IQD)
5310                         def_discipline = QETH_DISCIPLINE_LAYER3;
5311                 else
5312                         def_discipline = QETH_DISCIPLINE_LAYER2;
5313                 rc = qeth_core_load_discipline(card, def_discipline);
5314                 if (rc)
5315                         goto err;
5316                 rc = card->discipline->setup(card->gdev);
5317                 if (rc)
5318                         goto err;
5319         }
5320         rc = card->discipline->set_online(gdev);
5321 err:
5322         return rc;
5323 }
5324
5325 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5326 {
5327         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5328         return card->discipline->set_offline(gdev);
5329 }
5330
5331 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5332 {
5333         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5334         if (card->discipline && card->discipline->shutdown)
5335                 card->discipline->shutdown(gdev);
5336 }
5337
5338 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5339 {
5340         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5341         if (card->discipline && card->discipline->prepare)
5342                 return card->discipline->prepare(gdev);
5343         return 0;
5344 }
5345
5346 static void qeth_core_complete(struct ccwgroup_device *gdev)
5347 {
5348         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5349         if (card->discipline && card->discipline->complete)
5350                 card->discipline->complete(gdev);
5351 }
5352
5353 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5354 {
5355         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5356         if (card->discipline && card->discipline->freeze)
5357                 return card->discipline->freeze(gdev);
5358         return 0;
5359 }
5360
5361 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5362 {
5363         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5364         if (card->discipline && card->discipline->thaw)
5365                 return card->discipline->thaw(gdev);
5366         return 0;
5367 }
5368
5369 static int qeth_core_restore(struct ccwgroup_device *gdev)
5370 {
5371         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5372         if (card->discipline && card->discipline->restore)
5373                 return card->discipline->restore(gdev);
5374         return 0;
5375 }
5376
5377 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5378         .driver = {
5379                 .owner = THIS_MODULE,
5380                 .name = "qeth",
5381         },
5382         .setup = qeth_core_probe_device,
5383         .remove = qeth_core_remove_device,
5384         .set_online = qeth_core_set_online,
5385         .set_offline = qeth_core_set_offline,
5386         .shutdown = qeth_core_shutdown,
5387         .prepare = qeth_core_prepare,
5388         .complete = qeth_core_complete,
5389         .freeze = qeth_core_freeze,
5390         .thaw = qeth_core_thaw,
5391         .restore = qeth_core_restore,
5392 };
5393
5394 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5395                                             const char *buf, size_t count)
5396 {
5397         int err;
5398
5399         err = ccwgroup_create_dev(qeth_core_root_dev,
5400                                   &qeth_core_ccwgroup_driver, 3, buf);
5401
5402         return err ? err : count;
5403 }
5404 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5405
5406 static struct attribute *qeth_drv_attrs[] = {
5407         &driver_attr_group.attr,
5408         NULL,
5409 };
5410 static struct attribute_group qeth_drv_attr_group = {
5411         .attrs = qeth_drv_attrs,
5412 };
5413 static const struct attribute_group *qeth_drv_attr_groups[] = {
5414         &qeth_drv_attr_group,
5415         NULL,
5416 };
5417
5418 static struct {
5419         const char str[ETH_GSTRING_LEN];
5420 } qeth_ethtool_stats_keys[] = {
5421 /*  0 */{"rx skbs"},
5422         {"rx buffers"},
5423         {"tx skbs"},
5424         {"tx buffers"},
5425         {"tx skbs no packing"},
5426         {"tx buffers no packing"},
5427         {"tx skbs packing"},
5428         {"tx buffers packing"},
5429         {"tx sg skbs"},
5430         {"tx sg frags"},
5431 /* 10 */{"rx sg skbs"},
5432         {"rx sg frags"},
5433         {"rx sg page allocs"},
5434         {"tx large kbytes"},
5435         {"tx large count"},
5436         {"tx pk state ch n->p"},
5437         {"tx pk state ch p->n"},
5438         {"tx pk watermark low"},
5439         {"tx pk watermark high"},
5440         {"queue 0 buffer usage"},
5441 /* 20 */{"queue 1 buffer usage"},
5442         {"queue 2 buffer usage"},
5443         {"queue 3 buffer usage"},
5444         {"rx poll time"},
5445         {"rx poll count"},
5446         {"rx do_QDIO time"},
5447         {"rx do_QDIO count"},
5448         {"tx handler time"},
5449         {"tx handler count"},
5450         {"tx time"},
5451 /* 30 */{"tx count"},
5452         {"tx do_QDIO time"},
5453         {"tx do_QDIO count"},
5454         {"tx csum"},
5455         {"tx lin"},
5456         {"cq handler count"},
5457         {"cq handler time"}
5458 };
5459
5460 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5461 {
5462         switch (stringset) {
5463         case ETH_SS_STATS:
5464                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5465         default:
5466                 return -EINVAL;
5467         }
5468 }
5469 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5470
5471 void qeth_core_get_ethtool_stats(struct net_device *dev,
5472                 struct ethtool_stats *stats, u64 *data)
5473 {
5474         struct qeth_card *card = dev->ml_priv;
5475         data[0] = card->stats.rx_packets -
5476                                 card->perf_stats.initial_rx_packets;
5477         data[1] = card->perf_stats.bufs_rec;
5478         data[2] = card->stats.tx_packets -
5479                                 card->perf_stats.initial_tx_packets;
5480         data[3] = card->perf_stats.bufs_sent;
5481         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5482                         - card->perf_stats.skbs_sent_pack;
5483         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5484         data[6] = card->perf_stats.skbs_sent_pack;
5485         data[7] = card->perf_stats.bufs_sent_pack;
5486         data[8] = card->perf_stats.sg_skbs_sent;
5487         data[9] = card->perf_stats.sg_frags_sent;
5488         data[10] = card->perf_stats.sg_skbs_rx;
5489         data[11] = card->perf_stats.sg_frags_rx;
5490         data[12] = card->perf_stats.sg_alloc_page_rx;
5491         data[13] = (card->perf_stats.large_send_bytes >> 10);
5492         data[14] = card->perf_stats.large_send_cnt;
5493         data[15] = card->perf_stats.sc_dp_p;
5494         data[16] = card->perf_stats.sc_p_dp;
5495         data[17] = QETH_LOW_WATERMARK_PACK;
5496         data[18] = QETH_HIGH_WATERMARK_PACK;
5497         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5498         data[20] = (card->qdio.no_out_queues > 1) ?
5499                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5500         data[21] = (card->qdio.no_out_queues > 2) ?
5501                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5502         data[22] = (card->qdio.no_out_queues > 3) ?
5503                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5504         data[23] = card->perf_stats.inbound_time;
5505         data[24] = card->perf_stats.inbound_cnt;
5506         data[25] = card->perf_stats.inbound_do_qdio_time;
5507         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5508         data[27] = card->perf_stats.outbound_handler_time;
5509         data[28] = card->perf_stats.outbound_handler_cnt;
5510         data[29] = card->perf_stats.outbound_time;
5511         data[30] = card->perf_stats.outbound_cnt;
5512         data[31] = card->perf_stats.outbound_do_qdio_time;
5513         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5514         data[33] = card->perf_stats.tx_csum;
5515         data[34] = card->perf_stats.tx_lin;
5516         data[35] = card->perf_stats.cq_cnt;
5517         data[36] = card->perf_stats.cq_time;
5518 }
5519 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5520
5521 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5522 {
5523         switch (stringset) {
5524         case ETH_SS_STATS:
5525                 memcpy(data, &qeth_ethtool_stats_keys,
5526                         sizeof(qeth_ethtool_stats_keys));
5527                 break;
5528         default:
5529                 WARN_ON(1);
5530                 break;
5531         }
5532 }
5533 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5534
5535 void qeth_core_get_drvinfo(struct net_device *dev,
5536                 struct ethtool_drvinfo *info)
5537 {
5538         struct qeth_card *card = dev->ml_priv;
5539
5540         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5541                 sizeof(info->driver));
5542         strlcpy(info->version, "1.0", sizeof(info->version));
5543         strlcpy(info->fw_version, card->info.mcl_level,
5544                 sizeof(info->fw_version));
5545         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5546                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5547 }
5548 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5549
5550 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5551                                         struct ethtool_cmd *ecmd)
5552 {
5553         struct qeth_card *card = netdev->ml_priv;
5554         enum qeth_link_types link_type;
5555
5556         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5557                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5558         else
5559                 link_type = card->info.link_type;
5560
5561         ecmd->transceiver = XCVR_INTERNAL;
5562         ecmd->supported = SUPPORTED_Autoneg;
5563         ecmd->advertising = ADVERTISED_Autoneg;
5564         ecmd->duplex = DUPLEX_FULL;
5565         ecmd->autoneg = AUTONEG_ENABLE;
5566
5567         switch (link_type) {
5568         case QETH_LINK_TYPE_FAST_ETH:
5569         case QETH_LINK_TYPE_LANE_ETH100:
5570                 ecmd->supported |= SUPPORTED_10baseT_Half |
5571                                         SUPPORTED_10baseT_Full |
5572                                         SUPPORTED_100baseT_Half |
5573                                         SUPPORTED_100baseT_Full |
5574                                         SUPPORTED_TP;
5575                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5576                                         ADVERTISED_10baseT_Full |
5577                                         ADVERTISED_100baseT_Half |
5578                                         ADVERTISED_100baseT_Full |
5579                                         ADVERTISED_TP;
5580                 ecmd->speed = SPEED_100;
5581                 ecmd->port = PORT_TP;
5582                 break;
5583
5584         case QETH_LINK_TYPE_GBIT_ETH:
5585         case QETH_LINK_TYPE_LANE_ETH1000:
5586                 ecmd->supported |= SUPPORTED_10baseT_Half |
5587                                         SUPPORTED_10baseT_Full |
5588                                         SUPPORTED_100baseT_Half |
5589                                         SUPPORTED_100baseT_Full |
5590                                         SUPPORTED_1000baseT_Half |
5591                                         SUPPORTED_1000baseT_Full |
5592                                         SUPPORTED_FIBRE;
5593                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5594                                         ADVERTISED_10baseT_Full |
5595                                         ADVERTISED_100baseT_Half |
5596                                         ADVERTISED_100baseT_Full |
5597                                         ADVERTISED_1000baseT_Half |
5598                                         ADVERTISED_1000baseT_Full |
5599                                         ADVERTISED_FIBRE;
5600                 ecmd->speed = SPEED_1000;
5601                 ecmd->port = PORT_FIBRE;
5602                 break;
5603
5604         case QETH_LINK_TYPE_10GBIT_ETH:
5605                 ecmd->supported |= SUPPORTED_10baseT_Half |
5606                                         SUPPORTED_10baseT_Full |
5607                                         SUPPORTED_100baseT_Half |
5608                                         SUPPORTED_100baseT_Full |
5609                                         SUPPORTED_1000baseT_Half |
5610                                         SUPPORTED_1000baseT_Full |
5611                                         SUPPORTED_10000baseT_Full |
5612                                         SUPPORTED_FIBRE;
5613                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5614                                         ADVERTISED_10baseT_Full |
5615                                         ADVERTISED_100baseT_Half |
5616                                         ADVERTISED_100baseT_Full |
5617                                         ADVERTISED_1000baseT_Half |
5618                                         ADVERTISED_1000baseT_Full |
5619                                         ADVERTISED_10000baseT_Full |
5620                                         ADVERTISED_FIBRE;
5621                 ecmd->speed = SPEED_10000;
5622                 ecmd->port = PORT_FIBRE;
5623                 break;
5624
5625         default:
5626                 ecmd->supported |= SUPPORTED_10baseT_Half |
5627                                         SUPPORTED_10baseT_Full |
5628                                         SUPPORTED_TP;
5629                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5630                                         ADVERTISED_10baseT_Full |
5631                                         ADVERTISED_TP;
5632                 ecmd->speed = SPEED_10;
5633                 ecmd->port = PORT_TP;
5634         }
5635
5636         return 0;
5637 }
5638 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5639
5640 static int __init qeth_core_init(void)
5641 {
5642         int rc;
5643
5644         pr_info("loading core functions\n");
5645         INIT_LIST_HEAD(&qeth_core_card_list.list);
5646         INIT_LIST_HEAD(&qeth_dbf_list);
5647         rwlock_init(&qeth_core_card_list.rwlock);
5648         mutex_init(&qeth_mod_mutex);
5649
5650         qeth_wq = create_singlethread_workqueue("qeth_wq");
5651
5652         rc = qeth_register_dbf_views();
5653         if (rc)
5654                 goto out_err;
5655         qeth_core_root_dev = root_device_register("qeth");
5656         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5657         if (rc)
5658                 goto register_err;
5659         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5660                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5661         if (!qeth_core_header_cache) {
5662                 rc = -ENOMEM;
5663                 goto slab_err;
5664         }
5665         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5666                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5667         if (!qeth_qdio_outbuf_cache) {
5668                 rc = -ENOMEM;
5669                 goto cqslab_err;
5670         }
5671         rc = ccw_driver_register(&qeth_ccw_driver);
5672         if (rc)
5673                 goto ccw_err;
5674         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5675         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5676         if (rc)
5677                 goto ccwgroup_err;
5678
5679         return 0;
5680
5681 ccwgroup_err:
5682         ccw_driver_unregister(&qeth_ccw_driver);
5683 ccw_err:
5684         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5685 cqslab_err:
5686         kmem_cache_destroy(qeth_core_header_cache);
5687 slab_err:
5688         root_device_unregister(qeth_core_root_dev);
5689 register_err:
5690         qeth_unregister_dbf_views();
5691 out_err:
5692         pr_err("Initializing the qeth device driver failed\n");
5693         return rc;
5694 }
5695
5696 static void __exit qeth_core_exit(void)
5697 {
5698         qeth_clear_dbf_list();
5699         destroy_workqueue(qeth_wq);
5700         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5701         ccw_driver_unregister(&qeth_ccw_driver);
5702         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5703         kmem_cache_destroy(qeth_core_header_cache);
5704         root_device_unregister(qeth_core_root_dev);
5705         qeth_unregister_dbf_views();
5706         pr_info("core functions removed\n");
5707 }
5708
5709 module_init(qeth_core_init);
5710 module_exit(qeth_core_exit);
5711 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5712 MODULE_DESCRIPTION("qeth core functions");
5713 MODULE_LICENSE("GPL");