drivers/s390/net/qeth_core_main.c

   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/tcp.h>
  21 #include <linux/mii.h>
  22 #include <linux/kthread.h>
  23 #include <linux/slab.h>
  24 #include <net/iucv/af_iucv.h>
  25
  26 #include <asm/ebcdic.h>
  27 #include <asm/io.h>
  28 #include <asm/sysinfo.h>
  29 #include <asm/compat.h>
  30
  31 #include "qeth_core.h"
  32
  33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  34         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  35         /*                   N  P  A    M  L  V                      H  */
  36         [QETH_DBF_SETUP] = {"qeth_setup",
  37                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg",
  39                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  40         [QETH_DBF_CTRL]  = {"qeth_control",
  41                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  42 };
  43 EXPORT_SYMBOL_GPL(qeth_dbf);
  44
  45 struct qeth_card_list_struct qeth_core_card_list;
  46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  47 struct kmem_cache *qeth_core_header_cache;
  48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  49 static struct kmem_cache *qeth_qdio_outbuf_cache;
  50
  51 static struct device *qeth_core_root_dev;
  52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  53 static struct lock_class_key qdio_out_skb_queue_key;
  54
  55 static void qeth_send_control_data_cb(struct qeth_channel *,
  56                         struct qeth_cmd_buffer *);
  57 static int qeth_issue_next_read(struct qeth_card *);
  58 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  59 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  60 static void qeth_free_buffer_pool(struct qeth_card *);
  61 static int qeth_qdio_establish(struct qeth_card *);
  62 static void qeth_free_qdio_buffers(struct qeth_card *);
  63 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  64                 struct qeth_qdio_out_buffer *buf,
  65                 enum iucv_tx_notify notification);
  66 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  67 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  68                 struct qeth_qdio_out_buffer *buf,
  69                 enum qeth_qdio_buffer_states newbufstate);
  70 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  71
  72 static inline const char *qeth_get_cardname(struct qeth_card *card)
  73 {
  74         if (card->info.guestlan) {
  75                 switch (card->info.type) {
  76                 case QETH_CARD_TYPE_OSD:
  77                         return " Guest LAN QDIO";
  78                 case QETH_CARD_TYPE_IQD:
  79                         return " Guest LAN Hiper";
  80                 case QETH_CARD_TYPE_OSM:
  81                         return " Guest LAN QDIO - OSM";
  82                 case QETH_CARD_TYPE_OSX:
  83                         return " Guest LAN QDIO - OSX";
  84                 default:
  85                         return " unknown";
  86                 }
  87         } else {
  88                 switch (card->info.type) {
  89                 case QETH_CARD_TYPE_OSD:
  90                         return " OSD Express";
  91                 case QETH_CARD_TYPE_IQD:
  92                         return " HiperSockets";
  93                 case QETH_CARD_TYPE_OSN:
  94                         return " OSN QDIO";
  95                 case QETH_CARD_TYPE_OSM:
  96                         return " OSM QDIO";
  97                 case QETH_CARD_TYPE_OSX:
  98                         return " OSX QDIO";
  99                 default:
 100                         return " unknown";
 101                 }
 102         }
 103         return " n/a";
 104 }
 105
 106 /* max length to be returned: 14 */
 107 const char *qeth_get_cardname_short(struct qeth_card *card)
 108 {
 109         if (card->info.guestlan) {
 110                 switch (card->info.type) {
 111                 case QETH_CARD_TYPE_OSD:
 112                         return "GuestLAN QDIO";
 113                 case QETH_CARD_TYPE_IQD:
 114                         return "GuestLAN Hiper";
 115                 case QETH_CARD_TYPE_OSM:
 116                         return "GuestLAN OSM";
 117                 case QETH_CARD_TYPE_OSX:
 118                         return "GuestLAN OSX";
 119                 default:
 120                         return "unknown";
 121                 }
 122         } else {
 123                 switch (card->info.type) {
 124                 case QETH_CARD_TYPE_OSD:
 125                         switch (card->info.link_type) {
 126                         case QETH_LINK_TYPE_FAST_ETH:
 127                                 return "OSD_100";
 128                         case QETH_LINK_TYPE_HSTR:
 129                                 return "HSTR";
 130                         case QETH_LINK_TYPE_GBIT_ETH:
 131                                 return "OSD_1000";
 132                         case QETH_LINK_TYPE_10GBIT_ETH:
 133                                 return "OSD_10GIG";
 134                         case QETH_LINK_TYPE_LANE_ETH100:
 135                                 return "OSD_FE_LANE";
 136                         case QETH_LINK_TYPE_LANE_TR:
 137                                 return "OSD_TR_LANE";
 138                         case QETH_LINK_TYPE_LANE_ETH1000:
 139                                 return "OSD_GbE_LANE";
 140                         case QETH_LINK_TYPE_LANE:
 141                                 return "OSD_ATM_LANE";
 142                         default:
 143                                 return "OSD_Express";
 144                         }
 145                 case QETH_CARD_TYPE_IQD:
 146                         return "HiperSockets";
 147                 case QETH_CARD_TYPE_OSN:
 148                         return "OSN";
 149                 case QETH_CARD_TYPE_OSM:
 150                         return "OSM_1000";
 151                 case QETH_CARD_TYPE_OSX:
 152                         return "OSX_10GIG";
 153                 default:
 154                         return "unknown";
 155                 }
 156         }
 157         return "n/a";
 158 }
 159
 160 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 161                          int clear_start_mask)
 162 {
 163         unsigned long flags;
 164
 165         spin_lock_irqsave(&card->thread_mask_lock, flags);
 166         card->thread_allowed_mask = threads;
 167         if (clear_start_mask)
 168                 card->thread_start_mask &= threads;
 169         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 170         wake_up(&card->wait_q);
 171 }
 172 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 173
 174 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 175 {
 176         unsigned long flags;
 177         int rc = 0;
 178
 179         spin_lock_irqsave(&card->thread_mask_lock, flags);
 180         rc = (card->thread_running_mask & threads);
 181         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 182         return rc;
 183 }
 184 EXPORT_SYMBOL_GPL(qeth_threads_running);
 185
 186 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 187 {
 188         return wait_event_interruptible(card->wait_q,
 189                         qeth_threads_running(card, threads) == 0);
 190 }
 191 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 192
 193 void qeth_clear_working_pool_list(struct qeth_card *card)
 194 {
 195         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 196
 197         QETH_CARD_TEXT(card, 5, "clwrklst");
 198         list_for_each_entry_safe(pool_entry, tmp,
 199                             &card->qdio.in_buf_pool.entry_list, list){
 200                         list_del(&pool_entry->list);
 201         }
 202 }
 203 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 204
 205 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 206 {
 207         struct qeth_buffer_pool_entry *pool_entry;
 208         void *ptr;
 209         int i, j;
 210
 211         QETH_CARD_TEXT(card, 5, "alocpool");
 212         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 213                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 214                 if (!pool_entry) {
 215                         qeth_free_buffer_pool(card);
 216                         return -ENOMEM;
 217                 }
 218                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 219                         ptr = (void *) __get_free_page(GFP_KERNEL);
 220                         if (!ptr) {
 221                                 while (j > 0)
 222                                         free_page((unsigned long)
 223                                                   pool_entry->elements[--j]);
 224                                 kfree(pool_entry);
 225                                 qeth_free_buffer_pool(card);
 226                                 return -ENOMEM;
 227                         }
 228                         pool_entry->elements[j] = ptr;
 229                 }
 230                 list_add(&pool_entry->init_list,
 231                          &card->qdio.init_pool.entry_list);
 232         }
 233         return 0;
 234 }
 235
 236 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 237 {
 238         QETH_CARD_TEXT(card, 2, "realcbp");
 239
 240         if ((card->state != CARD_STATE_DOWN) &&
 241             (card->state != CARD_STATE_RECOVER))
 242                 return -EPERM;
 243
 244         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 245         qeth_clear_working_pool_list(card);
 246         qeth_free_buffer_pool(card);
 247         card->qdio.in_buf_pool.buf_count = bufcnt;
 248         card->qdio.init_pool.buf_count = bufcnt;
 249         return qeth_alloc_buffer_pool(card);
 250 }
 251 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 252
 253 static inline int qeth_cq_init(struct qeth_card *card)
 254 {
 255         int rc;
 256
 257         if (card->options.cq == QETH_CQ_ENABLED) {
 258                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 259                 memset(card->qdio.c_q->qdio_bufs, 0,
 260                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
 261                 card->qdio.c_q->next_buf_to_init = 127;
 262                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 263                              card->qdio.no_in_queues - 1, 0,
 264                              127);
 265                 if (rc) {
 266                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 267                         goto out;
 268                 }
 269         }
 270         rc = 0;
 271 out:
 272         return rc;
 273 }
 274
 275 static inline int qeth_alloc_cq(struct qeth_card *card)
 276 {
 277         int rc;
 278
 279         if (card->options.cq == QETH_CQ_ENABLED) {
 280                 int i;
 281                 struct qdio_outbuf_state *outbuf_states;
 282
 283                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 284                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
 285                                          GFP_KERNEL);
 286                 if (!card->qdio.c_q) {
 287                         rc = -1;
 288                         goto kmsg_out;
 289                 }
 290                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
 291
 292                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
 293                         card->qdio.c_q->bufs[i].buffer =
 294                                 &card->qdio.c_q->qdio_bufs[i];
 295                 }
 296
 297                 card->qdio.no_in_queues = 2;
 298
 299                 card->qdio.out_bufstates = (struct qdio_outbuf_state *)
 300                         kzalloc(card->qdio.no_out_queues *
 301                                 QDIO_MAX_BUFFERS_PER_Q *
 302                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 303                 outbuf_states = card->qdio.out_bufstates;
 304                 if (outbuf_states == NULL) {
 305                         rc = -1;
 306                         goto free_cq_out;
 307                 }
 308                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 309                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 310                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 311                 }
 312         } else {
 313                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 314                 card->qdio.c_q = NULL;
 315                 card->qdio.no_in_queues = 1;
 316         }
 317         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 318         rc = 0;
 319 out:
 320         return rc;
 321 free_cq_out:
 322         kfree(card->qdio.c_q);
 323         card->qdio.c_q = NULL;
 324 kmsg_out:
 325         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 326         goto out;
 327 }
 328
 329 static inline void qeth_free_cq(struct qeth_card *card)
 330 {
 331         if (card->qdio.c_q) {
 332                 --card->qdio.no_in_queues;
 333                 kfree(card->qdio.c_q);
 334                 card->qdio.c_q = NULL;
 335         }
 336         kfree(card->qdio.out_bufstates);
 337         card->qdio.out_bufstates = NULL;
 338 }
 339
 340 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 341         int delayed) {
 342         enum iucv_tx_notify n;
 343
 344         switch (sbalf15) {
 345         case 0:
 346                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 347                 break;
 348         case 4:
 349         case 16:
 350         case 17:
 351         case 18:
 352                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 353                         TX_NOTIFY_UNREACHABLE;
 354                 break;
 355         default:
 356                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 357                         TX_NOTIFY_GENERALERROR;
 358                 break;
 359         }
 360
 361         return n;
 362 }
 363
 364 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 365         int bidx, int forced_cleanup)
 366 {
 367         if (q->card->options.cq != QETH_CQ_ENABLED)
 368                 return;
 369
 370         if (q->bufs[bidx]->next_pending != NULL) {
 371                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 372                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 373
 374                 while (c) {
 375                         if (forced_cleanup ||
 376                             atomic_read(&c->state) ==
 377                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 378                                 struct qeth_qdio_out_buffer *f = c;
 379                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 380                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 381                                 /* release here to avoid interleaving between
 382                                    outbound tasklet and inbound tasklet
 383                                    regarding notifications and lifecycle */
 384                                 qeth_release_skbs(c);
 385
 386                                 c = f->next_pending;
 387                                 BUG_ON(head->next_pending != f);
 388                                 head->next_pending = c;
 389                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 390                         } else {
 391                                 head = c;
 392                                 c = c->next_pending;
 393                         }
 394
 395                 }
 396         }
 397         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 398                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 399                 /* for recovery situations */
 400                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 401                 qeth_init_qdio_out_buf(q, bidx);
 402                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 403         }
 404 }
 405
 406
 407 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 408                 unsigned long phys_aob_addr) {
 409         struct qaob *aob;
 410         struct qeth_qdio_out_buffer *buffer;
 411         enum iucv_tx_notify notification;
 412
 413         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 414         QETH_CARD_TEXT(card, 5, "haob");
 415         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 416         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 417         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 418
 419         BUG_ON(buffer == NULL);
 420
 421         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 422                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 423                 notification = TX_NOTIFY_OK;
 424         } else {
 425                 BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
 426                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 427                 notification = TX_NOTIFY_DELAYED_OK;
 428         }
 429
 430         if (aob->aorc != 0)  {
 431                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 432                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 433         }
 434         qeth_notify_skbs(buffer->q, buffer, notification);
 435
 436         buffer->aob = NULL;
 437         qeth_clear_output_buffer(buffer->q, buffer,
 438                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 439
 440         /* from here on: do not touch buffer anymore */
 441         qdio_release_aob(aob);
 442 }
 443
 444 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 445 {
 446         return card->options.cq == QETH_CQ_ENABLED &&
 447             card->qdio.c_q != NULL &&
 448             queue != 0 &&
 449             queue == card->qdio.no_in_queues - 1;
 450 }
 451
 452
 453 static int qeth_issue_next_read(struct qeth_card *card)
 454 {
 455         int rc;
 456         struct qeth_cmd_buffer *iob;
 457
 458         QETH_CARD_TEXT(card, 5, "issnxrd");
 459         if (card->read.state != CH_STATE_UP)
 460                 return -EIO;
 461         iob = qeth_get_buffer(&card->read);
 462         if (!iob) {
 463                 dev_warn(&card->gdev->dev, "The qeth device driver "
 464                         "failed to recover an error on the device\n");
 465                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 466                         "available\n", dev_name(&card->gdev->dev));
 467                 return -ENOMEM;
 468         }
 469         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 470         QETH_CARD_TEXT(card, 6, "noirqpnd");
 471         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 472                               (addr_t) iob, 0, 0);
 473         if (rc) {
 474                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 475                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 476                 atomic_set(&card->read.irq_pending, 0);
 477                 card->read_or_write_problem = 1;
 478                 qeth_schedule_recovery(card);
 479                 wake_up(&card->wait_q);
 480         }
 481         return rc;
 482 }
 483
 484 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 485 {
 486         struct qeth_reply *reply;
 487
 488         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 489         if (reply) {
 490                 atomic_set(&reply->refcnt, 1);
 491                 atomic_set(&reply->received, 0);
 492                 reply->card = card;
 493         };
 494         return reply;
 495 }
 496
 497 static void qeth_get_reply(struct qeth_reply *reply)
 498 {
 499         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 500         atomic_inc(&reply->refcnt);
 501 }
 502
 503 static void qeth_put_reply(struct qeth_reply *reply)
 504 {
 505         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 506         if (atomic_dec_and_test(&reply->refcnt))
 507                 kfree(reply);
 508 }
 509
 510 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 511                 struct qeth_card *card)
 512 {
 513         char *ipa_name;
 514         int com = cmd->hdr.command;
 515         ipa_name = qeth_get_ipa_cmd_name(com);
 516         if (rc)
 517                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 518                                 "x%X \"%s\"\n",
 519                                 ipa_name, com, dev_name(&card->gdev->dev),
 520                                 QETH_CARD_IFNAME(card), rc,
 521                                 qeth_get_ipa_msg(rc));
 522         else
 523                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 524                                 ipa_name, com, dev_name(&card->gdev->dev),
 525                                 QETH_CARD_IFNAME(card));
 526 }
 527
 528 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 529                 struct qeth_cmd_buffer *iob)
 530 {
 531         struct qeth_ipa_cmd *cmd = NULL;
 532
 533         QETH_CARD_TEXT(card, 5, "chkipad");
 534         if (IS_IPA(iob->data)) {
 535                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 536                 if (IS_IPA_REPLY(cmd)) {
 537                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 538                             cmd->hdr.command != IPA_CMD_DELCCID &&
 539                             cmd->hdr.command != IPA_CMD_MODCCID &&
 540                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 541                                 qeth_issue_ipa_msg(cmd,
 542                                                 cmd->hdr.return_code, card);
 543                         return cmd;
 544                 } else {
 545                         switch (cmd->hdr.command) {
 546                         case IPA_CMD_STOPLAN:
 547                                 dev_warn(&card->gdev->dev,
 548                                            "The link for interface %s on CHPID"
 549                                            " 0x%X failed\n",
 550                                            QETH_CARD_IFNAME(card),
 551                                            card->info.chpid);
 552                                 card->lan_online = 0;
 553                                 if (card->dev && netif_carrier_ok(card->dev))
 554                                         netif_carrier_off(card->dev);
 555                                 return NULL;
 556                         case IPA_CMD_STARTLAN:
 557                                 dev_info(&card->gdev->dev,
 558                                            "The link for %s on CHPID 0x%X has"
 559                                            " been restored\n",
 560                                            QETH_CARD_IFNAME(card),
 561                                            card->info.chpid);
 562                                 netif_carrier_on(card->dev);
 563                                 card->lan_online = 1;
 564                                 if (card->info.hwtrap)
 565                                         card->info.hwtrap = 2;
 566                                 qeth_schedule_recovery(card);
 567                                 return NULL;
 568                         case IPA_CMD_MODCCID:
 569                                 return cmd;
 570                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 571                                 QETH_CARD_TEXT(card, 3, "irla");
 572                                 break;
 573                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 574                                 QETH_CARD_TEXT(card, 3, "urla");
 575                                 break;
 576                         default:
 577                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 578                                            "but not a reply!\n");
 579                                 break;
 580                         }
 581                 }
 582         }
 583         return cmd;
 584 }
 585
 586 void qeth_clear_ipacmd_list(struct qeth_card *card)
 587 {
 588         struct qeth_reply *reply, *r;
 589         unsigned long flags;
 590
 591         QETH_CARD_TEXT(card, 4, "clipalst");
 592
 593         spin_lock_irqsave(&card->lock, flags);
 594         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 595                 qeth_get_reply(reply);
 596                 reply->rc = -EIO;
 597                 atomic_inc(&reply->received);
 598                 list_del_init(&reply->list);
 599                 wake_up(&reply->wait_q);
 600                 qeth_put_reply(reply);
 601         }
 602         spin_unlock_irqrestore(&card->lock, flags);
 603         atomic_set(&card->write.irq_pending, 0);
 604 }
 605 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 606
 607 static int qeth_check_idx_response(struct qeth_card *card,
 608         unsigned char *buffer)
 609 {
 610         if (!buffer)
 611                 return 0;
 612
 613         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 614         if ((buffer[2] & 0xc0) == 0xc0) {
 615                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 616                            "with cause code 0x%02x%s\n",
 617                            buffer[4],
 618                            ((buffer[4] == 0x22) ?
 619                             " -- try another portname" : ""));
 620                 QETH_CARD_TEXT(card, 2, "ckidxres");
 621                 QETH_CARD_TEXT(card, 2, " idxterm");
 622                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 623                 if (buffer[4] == 0xf6) {
 624                         dev_err(&card->gdev->dev,
 625                         "The qeth device is not configured "
 626                         "for the OSI layer required by z/VM\n");
 627                         return -EPERM;
 628                 }
 629                 return -EIO;
 630         }
 631         return 0;
 632 }
 633
 634 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 635                 __u32 len)
 636 {
 637         struct qeth_card *card;
 638
 639         card = CARD_FROM_CDEV(channel->ccwdev);
 640         QETH_CARD_TEXT(card, 4, "setupccw");
 641         if (channel == &card->read)
 642                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 643         else
 644                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 645         channel->ccw.count = len;
 646         channel->ccw.cda = (__u32) __pa(iob);
 647 }
 648
 649 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 650 {
 651         __u8 index;
 652
 653         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 654         index = channel->io_buf_no;
 655         do {
 656                 if (channel->iob[index].state == BUF_STATE_FREE) {
 657                         channel->iob[index].state = BUF_STATE_LOCKED;
 658                         channel->io_buf_no = (channel->io_buf_no + 1) %
 659                                 QETH_CMD_BUFFER_NO;
 660                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 661                         return channel->iob + index;
 662                 }
 663                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 664         } while (index != channel->io_buf_no);
 665
 666         return NULL;
 667 }
 668
 669 void qeth_release_buffer(struct qeth_channel *channel,
 670                 struct qeth_cmd_buffer *iob)
 671 {
 672         unsigned long flags;
 673
 674         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 675         spin_lock_irqsave(&channel->iob_lock, flags);
 676         memset(iob->data, 0, QETH_BUFSIZE);
 677         iob->state = BUF_STATE_FREE;
 678         iob->callback = qeth_send_control_data_cb;
 679         iob->rc = 0;
 680         spin_unlock_irqrestore(&channel->iob_lock, flags);
 681 }
 682 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 683
 684 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 685 {
 686         struct qeth_cmd_buffer *buffer = NULL;
 687         unsigned long flags;
 688
 689         spin_lock_irqsave(&channel->iob_lock, flags);
 690         buffer = __qeth_get_buffer(channel);
 691         spin_unlock_irqrestore(&channel->iob_lock, flags);
 692         return buffer;
 693 }
 694
 695 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 696 {
 697         struct qeth_cmd_buffer *buffer;
 698         wait_event(channel->wait_q,
 699                    ((buffer = qeth_get_buffer(channel)) != NULL));
 700         return buffer;
 701 }
 702 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 703
 704 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 705 {
 706         int cnt;
 707
 708         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 709                 qeth_release_buffer(channel, &channel->iob[cnt]);
 710         channel->buf_no = 0;
 711         channel->io_buf_no = 0;
 712 }
 713 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 714
 715 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 716                   struct qeth_cmd_buffer *iob)
 717 {
 718         struct qeth_card *card;
 719         struct qeth_reply *reply, *r;
 720         struct qeth_ipa_cmd *cmd;
 721         unsigned long flags;
 722         int keep_reply;
 723         int rc = 0;
 724
 725         card = CARD_FROM_CDEV(channel->ccwdev);
 726         QETH_CARD_TEXT(card, 4, "sndctlcb");
 727         rc = qeth_check_idx_response(card, iob->data);
 728         switch (rc) {
 729         case 0:
 730                 break;
 731         case -EIO:
 732                 qeth_clear_ipacmd_list(card);
 733                 qeth_schedule_recovery(card);
 734                 /* fall through */
 735         default:
 736                 goto out;
 737         }
 738
 739         cmd = qeth_check_ipa_data(card, iob);
 740         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 741                 goto out;
 742         /*in case of OSN : check if cmd is set */
 743         if (card->info.type == QETH_CARD_TYPE_OSN &&
 744             cmd &&
 745             cmd->hdr.command != IPA_CMD_STARTLAN &&
 746             card->osn_info.assist_cb != NULL) {
 747                 card->osn_info.assist_cb(card->dev, cmd);
 748                 goto out;
 749         }
 750
 751         spin_lock_irqsave(&card->lock, flags);
 752         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 753                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 754                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 755                         qeth_get_reply(reply);
 756                         list_del_init(&reply->list);
 757                         spin_unlock_irqrestore(&card->lock, flags);
 758                         keep_reply = 0;
 759                         if (reply->callback != NULL) {
 760                                 if (cmd) {
 761                                         reply->offset = (__u16)((char *)cmd -
 762                                                         (char *)iob->data);
 763                                         keep_reply = reply->callback(card,
 764                                                         reply,
 765                                                         (unsigned long)cmd);
 766                                 } else
 767                                         keep_reply = reply->callback(card,
 768                                                         reply,
 769                                                         (unsigned long)iob);
 770                         }
 771                         if (cmd)
 772                                 reply->rc = (u16) cmd->hdr.return_code;
 773                         else if (iob->rc)
 774                                 reply->rc = iob->rc;
 775                         if (keep_reply) {
 776                                 spin_lock_irqsave(&card->lock, flags);
 777                                 list_add_tail(&reply->list,
 778                                               &card->cmd_waiter_list);
 779                                 spin_unlock_irqrestore(&card->lock, flags);
 780                         } else {
 781                                 atomic_inc(&reply->received);
 782                                 wake_up(&reply->wait_q);
 783                         }
 784                         qeth_put_reply(reply);
 785                         goto out;
 786                 }
 787         }
 788         spin_unlock_irqrestore(&card->lock, flags);
 789 out:
 790         memcpy(&card->seqno.pdu_hdr_ack,
 791                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 792                 QETH_SEQ_NO_LENGTH);
 793         qeth_release_buffer(channel, iob);
 794 }
 795
 796 static int qeth_setup_channel(struct qeth_channel *channel)
 797 {
 798         int cnt;
 799
 800         QETH_DBF_TEXT(SETUP, 2, "setupch");
 801         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 802                 channel->iob[cnt].data =
 803                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 804                 if (channel->iob[cnt].data == NULL)
 805                         break;
 806                 channel->iob[cnt].state = BUF_STATE_FREE;
 807                 channel->iob[cnt].channel = channel;
 808                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 809                 channel->iob[cnt].rc = 0;
 810         }
 811         if (cnt < QETH_CMD_BUFFER_NO) {
 812                 while (cnt-- > 0)
 813                         kfree(channel->iob[cnt].data);
 814                 return -ENOMEM;
 815         }
 816         channel->buf_no = 0;
 817         channel->io_buf_no = 0;
 818         atomic_set(&channel->irq_pending, 0);
 819         spin_lock_init(&channel->iob_lock);
 820
 821         init_waitqueue_head(&channel->wait_q);
 822         return 0;
 823 }
 824
 825 static int qeth_set_thread_start_bit(struct qeth_card *card,
 826                 unsigned long thread)
 827 {
 828         unsigned long flags;
 829
 830         spin_lock_irqsave(&card->thread_mask_lock, flags);
 831         if (!(card->thread_allowed_mask & thread) ||
 832               (card->thread_start_mask & thread)) {
 833                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 834                 return -EPERM;
 835         }
 836         card->thread_start_mask |= thread;
 837         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 838         return 0;
 839 }
 840
 841 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 842 {
 843         unsigned long flags;
 844
 845         spin_lock_irqsave(&card->thread_mask_lock, flags);
 846         card->thread_start_mask &= ~thread;
 847         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 848         wake_up(&card->wait_q);
 849 }
 850 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 851
 852 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 853 {
 854         unsigned long flags;
 855
 856         spin_lock_irqsave(&card->thread_mask_lock, flags);
 857         card->thread_running_mask &= ~thread;
 858         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 859         wake_up(&card->wait_q);
 860 }
 861 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 862
 863 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 864 {
 865         unsigned long flags;
 866         int rc = 0;
 867
 868         spin_lock_irqsave(&card->thread_mask_lock, flags);
 869         if (card->thread_start_mask & thread) {
 870                 if ((card->thread_allowed_mask & thread) &&
 871                     !(card->thread_running_mask & thread)) {
 872                         rc = 1;
 873                         card->thread_start_mask &= ~thread;
 874                         card->thread_running_mask |= thread;
 875                 } else
 876                         rc = -EPERM;
 877         }
 878         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 879         return rc;
 880 }
 881
 882 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 883 {
 884         int rc = 0;
 885
 886         wait_event(card->wait_q,
 887                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 888         return rc;
 889 }
 890 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 891
 892 void qeth_schedule_recovery(struct qeth_card *card)
 893 {
 894         QETH_CARD_TEXT(card, 2, "startrec");
 895         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 896                 schedule_work(&card->kernel_thread_starter);
 897 }
 898 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 899
 900 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 901 {
 902         int dstat, cstat;
 903         char *sense;
 904         struct qeth_card *card;
 905
 906         sense = (char *) irb->ecw;
 907         cstat = irb->scsw.cmd.cstat;
 908         dstat = irb->scsw.cmd.dstat;
 909         card = CARD_FROM_CDEV(cdev);
 910
 911         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 912                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 913                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 914                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 915                 dev_warn(&cdev->dev, "The qeth device driver "
 916                         "failed to recover an error on the device\n");
 917                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 918                         dev_name(&cdev->dev), dstat, cstat);
 919                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 920                                 16, 1, irb, 64, 1);
 921                 return 1;
 922         }
 923
 924         if (dstat & DEV_STAT_UNIT_CHECK) {
 925                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 926                     SENSE_RESETTING_EVENT_FLAG) {
 927                         QETH_CARD_TEXT(card, 2, "REVIND");
 928                         return 1;
 929                 }
 930                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 931                     SENSE_COMMAND_REJECT_FLAG) {
 932                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 933                         return 1;
 934                 }
 935                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 936                         QETH_CARD_TEXT(card, 2, "AFFE");
 937                         return 1;
 938                 }
 939                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 940                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 941                         return 0;
 942                 }
 943                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 944                         return 1;
 945         }
 946         return 0;
 947 }
 948
 949 static long __qeth_check_irb_error(struct ccw_device *cdev,
 950                 unsigned long intparm, struct irb *irb)
 951 {
 952         struct qeth_card *card;
 953
 954         card = CARD_FROM_CDEV(cdev);
 955
 956         if (!IS_ERR(irb))
 957                 return 0;
 958
 959         switch (PTR_ERR(irb)) {
 960         case -EIO:
 961                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 962                         dev_name(&cdev->dev));
 963                 QETH_CARD_TEXT(card, 2, "ckirberr");
 964                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 965                 break;
 966         case -ETIMEDOUT:
 967                 dev_warn(&cdev->dev, "A hardware operation timed out"
 968                         " on the device\n");
 969                 QETH_CARD_TEXT(card, 2, "ckirberr");
 970                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 971                 if (intparm == QETH_RCD_PARM) {
 972                         if (card && (card->data.ccwdev == cdev)) {
 973                                 card->data.state = CH_STATE_DOWN;
 974                                 wake_up(&card->wait_q);
 975                         }
 976                 }
 977                 break;
 978         default:
 979                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 980                         dev_name(&cdev->dev), PTR_ERR(irb));
 981                 QETH_CARD_TEXT(card, 2, "ckirberr");
 982                 QETH_CARD_TEXT(card, 2, "  rc???");
 983         }
 984         return PTR_ERR(irb);
 985 }
 986
 987 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 988                 struct irb *irb)
 989 {
 990         int rc;
 991         int cstat, dstat;
 992         struct qeth_cmd_buffer *buffer;
 993         struct qeth_channel *channel;
 994         struct qeth_card *card;
 995         struct qeth_cmd_buffer *iob;
 996         __u8 index;
 997
 998         if (__qeth_check_irb_error(cdev, intparm, irb))
 999                 return;
1000         cstat = irb->scsw.cmd.cstat;
1001         dstat = irb->scsw.cmd.dstat;
1002
1003         card = CARD_FROM_CDEV(cdev);
1004         if (!card)
1005                 return;
1006
1007         QETH_CARD_TEXT(card, 5, "irq");
1008
1009         if (card->read.ccwdev == cdev) {
1010                 channel = &card->read;
1011                 QETH_CARD_TEXT(card, 5, "read");
1012         } else if (card->write.ccwdev == cdev) {
1013                 channel = &card->write;
1014                 QETH_CARD_TEXT(card, 5, "write");
1015         } else {
1016                 channel = &card->data;
1017                 QETH_CARD_TEXT(card, 5, "data");
1018         }
1019         atomic_set(&channel->irq_pending, 0);
1020
1021         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1022                 channel->state = CH_STATE_STOPPED;
1023
1024         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1025                 channel->state = CH_STATE_HALTED;
1026
1027         /*let's wake up immediately on data channel*/
1028         if ((channel == &card->data) && (intparm != 0) &&
1029             (intparm != QETH_RCD_PARM))
1030                 goto out;
1031
1032         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1033                 QETH_CARD_TEXT(card, 6, "clrchpar");
1034                 /* we don't have to handle this further */
1035                 intparm = 0;
1036         }
1037         if (intparm == QETH_HALT_CHANNEL_PARM) {
1038                 QETH_CARD_TEXT(card, 6, "hltchpar");
1039                 /* we don't have to handle this further */
1040                 intparm = 0;
1041         }
1042         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1043             (dstat & DEV_STAT_UNIT_CHECK) ||
1044             (cstat)) {
1045                 if (irb->esw.esw0.erw.cons) {
1046                         dev_warn(&channel->ccwdev->dev,
1047                                 "The qeth device driver failed to recover "
1048                                 "an error on the device\n");
1049                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1050                                 "0x%X dstat 0x%X\n",
1051                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1052                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1053                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1054                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1055                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1056                 }
1057                 if (intparm == QETH_RCD_PARM) {
1058                         channel->state = CH_STATE_DOWN;
1059                         goto out;
1060                 }
1061                 rc = qeth_get_problem(cdev, irb);
1062                 if (rc) {
1063                         qeth_clear_ipacmd_list(card);
1064                         qeth_schedule_recovery(card);
1065                         goto out;
1066                 }
1067         }
1068
1069         if (intparm == QETH_RCD_PARM) {
1070                 channel->state = CH_STATE_RCD_DONE;
1071                 goto out;
1072         }
1073         if (intparm) {
1074                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1075                 buffer->state = BUF_STATE_PROCESSED;
1076         }
1077         if (channel == &card->data)
1078                 return;
1079         if (channel == &card->read &&
1080             channel->state == CH_STATE_UP)
1081                 qeth_issue_next_read(card);
1082
1083         iob = channel->iob;
1084         index = channel->buf_no;
1085         while (iob[index].state == BUF_STATE_PROCESSED) {
1086                 if (iob[index].callback != NULL)
1087                         iob[index].callback(channel, iob + index);
1088
1089                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1090         }
1091         channel->buf_no = index;
1092 out:
1093         wake_up(&card->wait_q);
1094         return;
1095 }
1096
1097 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1098                 struct qeth_qdio_out_buffer *buf,
1099                 enum iucv_tx_notify notification)
1100 {
1101         struct sk_buff *skb;
1102
1103         if (skb_queue_empty(&buf->skb_list))
1104                 goto out;
1105         skb = skb_peek(&buf->skb_list);
1106         while (skb) {
1107                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1108                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1109                 if (skb->protocol == ETH_P_AF_IUCV) {
1110                         if (skb->sk) {
1111                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1112                                 iucv->sk_txnotify(skb, notification);
1113                         }
1114                 }
1115                 if (skb_queue_is_last(&buf->skb_list, skb))
1116                         skb = NULL;
1117                 else
1118                         skb = skb_queue_next(&buf->skb_list, skb);
1119         }
1120 out:
1121         return;
1122 }
1123
1124 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1125 {
1126         struct sk_buff *skb;
1127         struct iucv_sock *iucv;
1128         int notify_general_error = 0;
1129
1130         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1131                 notify_general_error = 1;
1132
1133         /* release may never happen from within CQ tasklet scope */
1134         BUG_ON(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1135
1136         skb = skb_dequeue(&buf->skb_list);
1137         while (skb) {
1138                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1139                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1140                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1141                         if (skb->sk) {
1142                                 iucv = iucv_sk(skb->sk);
1143                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1144                         }
1145                 }
1146                 atomic_dec(&skb->users);
1147                 dev_kfree_skb_any(skb);
1148                 skb = skb_dequeue(&buf->skb_list);
1149         }
1150 }
1151
1152 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1153                 struct qeth_qdio_out_buffer *buf,
1154                 enum qeth_qdio_buffer_states newbufstate)
1155 {
1156         int i;
1157
1158         /* is PCI flag set on buffer? */
1159         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1160                 atomic_dec(&queue->set_pci_flags_count);
1161
1162         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1163                 qeth_release_skbs(buf);
1164         }
1165         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1166                 if (buf->buffer->element[i].addr && buf->is_header[i])
1167                         kmem_cache_free(qeth_core_header_cache,
1168                                 buf->buffer->element[i].addr);
1169                 buf->is_header[i] = 0;
1170                 buf->buffer->element[i].length = 0;
1171                 buf->buffer->element[i].addr = NULL;
1172                 buf->buffer->element[i].eflags = 0;
1173                 buf->buffer->element[i].sflags = 0;
1174         }
1175         buf->buffer->element[15].eflags = 0;
1176         buf->buffer->element[15].sflags = 0;
1177         buf->next_element_to_fill = 0;
1178         atomic_set(&buf->state, newbufstate);
1179 }
1180
1181 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1182 {
1183         int j;
1184
1185         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1186                 if (!q->bufs[j])
1187                         continue;
1188                 qeth_cleanup_handled_pending(q, j, 1);
1189                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1190                 if (free) {
1191                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1192                         q->bufs[j] = NULL;
1193                 }
1194         }
1195 }
1196
1197 void qeth_clear_qdio_buffers(struct qeth_card *card)
1198 {
1199         int i;
1200
1201         QETH_CARD_TEXT(card, 2, "clearqdbf");
1202         /* clear outbound buffers to free skbs */
1203         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1204                 if (card->qdio.out_qs[i]) {
1205                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1206                 }
1207         }
1208 }
1209 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1210
1211 static void qeth_free_buffer_pool(struct qeth_card *card)
1212 {
1213         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1214         int i = 0;
1215         list_for_each_entry_safe(pool_entry, tmp,
1216                                  &card->qdio.init_pool.entry_list, init_list){
1217                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1218                         free_page((unsigned long)pool_entry->elements[i]);
1219                 list_del(&pool_entry->init_list);
1220                 kfree(pool_entry);
1221         }
1222 }
1223
1224 static void qeth_free_qdio_buffers(struct qeth_card *card)
1225 {
1226         int i, j;
1227
1228         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1229                 QETH_QDIO_UNINITIALIZED)
1230                 return;
1231
1232         qeth_free_cq(card);
1233         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1234         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1235                 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1236         kfree(card->qdio.in_q);
1237         card->qdio.in_q = NULL;
1238         /* inbound buffer pool */
1239         qeth_free_buffer_pool(card);
1240         /* free outbound qdio_qs */
1241         if (card->qdio.out_qs) {
1242                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1243                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1244                         kfree(card->qdio.out_qs[i]);
1245                 }
1246                 kfree(card->qdio.out_qs);
1247                 card->qdio.out_qs = NULL;
1248         }
1249 }
1250
1251 static void qeth_clean_channel(struct qeth_channel *channel)
1252 {
1253         int cnt;
1254
1255         QETH_DBF_TEXT(SETUP, 2, "freech");
1256         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1257                 kfree(channel->iob[cnt].data);
1258 }
1259
1260 static void qeth_get_channel_path_desc(struct qeth_card *card)
1261 {
1262         struct ccw_device *ccwdev;
1263         struct channelPath_dsc {
1264                 u8 flags;
1265                 u8 lsn;
1266                 u8 desc;
1267                 u8 chpid;
1268                 u8 swla;
1269                 u8 zeroes;
1270                 u8 chla;
1271                 u8 chpp;
1272         } *chp_dsc;
1273
1274         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1275
1276         ccwdev = card->data.ccwdev;
1277         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1278         if (chp_dsc != NULL) {
1279                 if (card->info.type != QETH_CARD_TYPE_IQD) {
1280                         /* CHPP field bit 6 == 1 -> single queue */
1281                         if ((chp_dsc->chpp & 0x02) == 0x02) {
1282                                 if ((atomic_read(&card->qdio.state) !=
1283                                         QETH_QDIO_UNINITIALIZED) &&
1284                                     (card->qdio.no_out_queues == 4))
1285                                         /* change from 4 to 1 outbound queues */
1286                                         qeth_free_qdio_buffers(card);
1287                                 card->qdio.no_out_queues = 1;
1288                                 if (card->qdio.default_out_queue != 0)
1289                                         dev_info(&card->gdev->dev,
1290                                         "Priority Queueing not supported\n");
1291                                 card->qdio.default_out_queue = 0;
1292                         } else {
1293                                 if ((atomic_read(&card->qdio.state) !=
1294                                         QETH_QDIO_UNINITIALIZED) &&
1295                                     (card->qdio.no_out_queues == 1)) {
1296                                         /* change from 1 to 4 outbound queues */
1297                                         qeth_free_qdio_buffers(card);
1298                                         card->qdio.default_out_queue = 2;
1299                                 }
1300                                 card->qdio.no_out_queues = 4;
1301                         }
1302                 }
1303                 card->info.func_level = 0x4100 + chp_dsc->desc;
1304                 kfree(chp_dsc);
1305         }
1306         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1307         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1308         return;
1309 }
1310
1311 static void qeth_init_qdio_info(struct qeth_card *card)
1312 {
1313         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1314         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1315         /* inbound */
1316         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1317         if (card->info.type == QETH_CARD_TYPE_IQD)
1318                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1319         else
1320                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1321         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1322         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1323         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1324 }
1325
1326 static void qeth_set_intial_options(struct qeth_card *card)
1327 {
1328         card->options.route4.type = NO_ROUTER;
1329         card->options.route6.type = NO_ROUTER;
1330         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1331         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1332         card->options.fake_broadcast = 0;
1333         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1334         card->options.performance_stats = 0;
1335         card->options.rx_sg_cb = QETH_RX_SG_CB;
1336         card->options.isolation = ISOLATION_MODE_NONE;
1337         card->options.cq = QETH_CQ_DISABLED;
1338 }
1339
1340 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1341 {
1342         unsigned long flags;
1343         int rc = 0;
1344
1345         spin_lock_irqsave(&card->thread_mask_lock, flags);
1346         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1347                         (u8) card->thread_start_mask,
1348                         (u8) card->thread_allowed_mask,
1349                         (u8) card->thread_running_mask);
1350         rc = (card->thread_start_mask & thread);
1351         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1352         return rc;
1353 }
1354
1355 static void qeth_start_kernel_thread(struct work_struct *work)
1356 {
1357         struct task_struct *ts;
1358         struct qeth_card *card = container_of(work, struct qeth_card,
1359                                         kernel_thread_starter);
1360         QETH_CARD_TEXT(card , 2, "strthrd");
1361
1362         if (card->read.state != CH_STATE_UP &&
1363             card->write.state != CH_STATE_UP)
1364                 return;
1365         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1366                 ts = kthread_run(card->discipline.recover, (void *)card,
1367                                 "qeth_recover");
1368                 if (IS_ERR(ts)) {
1369                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1370                         qeth_clear_thread_running_bit(card,
1371                                 QETH_RECOVER_THREAD);
1372                 }
1373         }
1374 }
1375
1376 static int qeth_setup_card(struct qeth_card *card)
1377 {
1378
1379         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1380         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1381
1382         card->read.state  = CH_STATE_DOWN;
1383         card->write.state = CH_STATE_DOWN;
1384         card->data.state  = CH_STATE_DOWN;
1385         card->state = CARD_STATE_DOWN;
1386         card->lan_online = 0;
1387         card->read_or_write_problem = 0;
1388         card->dev = NULL;
1389         spin_lock_init(&card->vlanlock);
1390         spin_lock_init(&card->mclock);
1391         spin_lock_init(&card->lock);
1392         spin_lock_init(&card->ip_lock);
1393         spin_lock_init(&card->thread_mask_lock);
1394         mutex_init(&card->conf_mutex);
1395         mutex_init(&card->discipline_mutex);
1396         card->thread_start_mask = 0;
1397         card->thread_allowed_mask = 0;
1398         card->thread_running_mask = 0;
1399         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1400         INIT_LIST_HEAD(&card->ip_list);
1401         INIT_LIST_HEAD(card->ip_tbd_list);
1402         INIT_LIST_HEAD(&card->cmd_waiter_list);
1403         init_waitqueue_head(&card->wait_q);
1404         /* initial options */
1405         qeth_set_intial_options(card);
1406         /* IP address takeover */
1407         INIT_LIST_HEAD(&card->ipato.entries);
1408         card->ipato.enabled = 0;
1409         card->ipato.invert4 = 0;
1410         card->ipato.invert6 = 0;
1411         /* init QDIO stuff */
1412         qeth_init_qdio_info(card);
1413         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1414         return 0;
1415 }
1416
1417 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1418 {
1419         struct qeth_card *card = container_of(slr, struct qeth_card,
1420                                         qeth_service_level);
1421         if (card->info.mcl_level[0])
1422                 seq_printf(m, "qeth: %s firmware level %s\n",
1423                         CARD_BUS_ID(card), card->info.mcl_level);
1424 }
1425
1426 static struct qeth_card *qeth_alloc_card(void)
1427 {
1428         struct qeth_card *card;
1429
1430         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1431         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1432         if (!card)
1433                 goto out;
1434         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1435         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1436         if (!card->ip_tbd_list) {
1437                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1438                 goto out_card;
1439         }
1440         if (qeth_setup_channel(&card->read))
1441                 goto out_ip;
1442         if (qeth_setup_channel(&card->write))
1443                 goto out_channel;
1444         card->options.layer2 = -1;
1445         card->qeth_service_level.seq_print = qeth_core_sl_print;
1446         register_service_level(&card->qeth_service_level);
1447         return card;
1448
1449 out_channel:
1450         qeth_clean_channel(&card->read);
1451 out_ip:
1452         kfree(card->ip_tbd_list);
1453 out_card:
1454         kfree(card);
1455 out:
1456         return NULL;
1457 }
1458
1459 static int qeth_determine_card_type(struct qeth_card *card)
1460 {
1461         int i = 0;
1462
1463         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1464
1465         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1466         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1467         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1468                 if ((CARD_RDEV(card)->id.dev_type ==
1469                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1470                     (CARD_RDEV(card)->id.dev_model ==
1471                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1472                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1473                         card->qdio.no_out_queues =
1474                                 known_devices[i][QETH_QUEUE_NO_IND];
1475                         card->qdio.no_in_queues = 1;
1476                         card->info.is_multicast_different =
1477                                 known_devices[i][QETH_MULTICAST_IND];
1478                         qeth_get_channel_path_desc(card);
1479                         return 0;
1480                 }
1481                 i++;
1482         }
1483         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1484         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1485                 "unknown type\n");
1486         return -ENOENT;
1487 }
1488
1489 static int qeth_clear_channel(struct qeth_channel *channel)
1490 {
1491         unsigned long flags;
1492         struct qeth_card *card;
1493         int rc;
1494
1495         card = CARD_FROM_CDEV(channel->ccwdev);
1496         QETH_CARD_TEXT(card, 3, "clearch");
1497         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1498         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1499         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1500
1501         if (rc)
1502                 return rc;
1503         rc = wait_event_interruptible_timeout(card->wait_q,
1504                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1505         if (rc == -ERESTARTSYS)
1506                 return rc;
1507         if (channel->state != CH_STATE_STOPPED)
1508                 return -ETIME;
1509         channel->state = CH_STATE_DOWN;
1510         return 0;
1511 }
1512
1513 static int qeth_halt_channel(struct qeth_channel *channel)
1514 {
1515         unsigned long flags;
1516         struct qeth_card *card;
1517         int rc;
1518
1519         card = CARD_FROM_CDEV(channel->ccwdev);
1520         QETH_CARD_TEXT(card, 3, "haltch");
1521         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1522         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1523         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1524
1525         if (rc)
1526                 return rc;
1527         rc = wait_event_interruptible_timeout(card->wait_q,
1528                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1529         if (rc == -ERESTARTSYS)
1530                 return rc;
1531         if (channel->state != CH_STATE_HALTED)
1532                 return -ETIME;
1533         return 0;
1534 }
1535
1536 static int qeth_halt_channels(struct qeth_card *card)
1537 {
1538         int rc1 = 0, rc2 = 0, rc3 = 0;
1539
1540         QETH_CARD_TEXT(card, 3, "haltchs");
1541         rc1 = qeth_halt_channel(&card->read);
1542         rc2 = qeth_halt_channel(&card->write);
1543         rc3 = qeth_halt_channel(&card->data);
1544         if (rc1)
1545                 return rc1;
1546         if (rc2)
1547                 return rc2;
1548         return rc3;
1549 }
1550
1551 static int qeth_clear_channels(struct qeth_card *card)
1552 {
1553         int rc1 = 0, rc2 = 0, rc3 = 0;
1554
1555         QETH_CARD_TEXT(card, 3, "clearchs");
1556         rc1 = qeth_clear_channel(&card->read);
1557         rc2 = qeth_clear_channel(&card->write);
1558         rc3 = qeth_clear_channel(&card->data);
1559         if (rc1)
1560                 return rc1;
1561         if (rc2)
1562                 return rc2;
1563         return rc3;
1564 }
1565
1566 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1567 {
1568         int rc = 0;
1569
1570         QETH_CARD_TEXT(card, 3, "clhacrd");
1571
1572         if (halt)
1573                 rc = qeth_halt_channels(card);
1574         if (rc)
1575                 return rc;
1576         return qeth_clear_channels(card);
1577 }
1578
1579 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1580 {
1581         int rc = 0;
1582
1583         QETH_CARD_TEXT(card, 3, "qdioclr");
1584         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1585                 QETH_QDIO_CLEANING)) {
1586         case QETH_QDIO_ESTABLISHED:
1587                 if (card->info.type == QETH_CARD_TYPE_IQD)
1588                         rc = qdio_shutdown(CARD_DDEV(card),
1589                                 QDIO_FLAG_CLEANUP_USING_HALT);
1590                 else
1591                         rc = qdio_shutdown(CARD_DDEV(card),
1592                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1593                 if (rc)
1594                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1595                 qdio_free(CARD_DDEV(card));
1596                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1597                 break;
1598         case QETH_QDIO_CLEANING:
1599                 return rc;
1600         default:
1601                 break;
1602         }
1603         rc = qeth_clear_halt_card(card, use_halt);
1604         if (rc)
1605                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1606         card->state = CARD_STATE_DOWN;
1607         return rc;
1608 }
1609 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1610
1611 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1612                                int *length)
1613 {
1614         struct ciw *ciw;
1615         char *rcd_buf;
1616         int ret;
1617         struct qeth_channel *channel = &card->data;
1618         unsigned long flags;
1619
1620         /*
1621          * scan for RCD command in extended SenseID data
1622          */
1623         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1624         if (!ciw || ciw->cmd == 0)
1625                 return -EOPNOTSUPP;
1626         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1627         if (!rcd_buf)
1628                 return -ENOMEM;
1629
1630         channel->ccw.cmd_code = ciw->cmd;
1631         channel->ccw.cda = (__u32) __pa(rcd_buf);
1632         channel->ccw.count = ciw->count;
1633         channel->ccw.flags = CCW_FLAG_SLI;
1634         channel->state = CH_STATE_RCD;
1635         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1636         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1637                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1638                                        QETH_RCD_TIMEOUT);
1639         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1640         if (!ret)
1641                 wait_event(card->wait_q,
1642                            (channel->state == CH_STATE_RCD_DONE ||
1643                             channel->state == CH_STATE_DOWN));
1644         if (channel->state == CH_STATE_DOWN)
1645                 ret = -EIO;
1646         else
1647                 channel->state = CH_STATE_DOWN;
1648         if (ret) {
1649                 kfree(rcd_buf);
1650                 *buffer = NULL;
1651                 *length = 0;
1652         } else {
1653                 *length = ciw->count;
1654                 *buffer = rcd_buf;
1655         }
1656         return ret;
1657 }
1658
1659 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1660 {
1661         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1662         card->info.chpid = prcd[30];
1663         card->info.unit_addr2 = prcd[31];
1664         card->info.cula = prcd[63];
1665         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1666                                (prcd[0x11] == _ascebc['M']));
1667 }
1668
1669 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1670 {
1671         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1672
1673         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1674                 card->info.blkt.time_total = 250;
1675                 card->info.blkt.inter_packet = 5;
1676                 card->info.blkt.inter_packet_jumbo = 15;
1677         } else {
1678                 card->info.blkt.time_total = 0;
1679                 card->info.blkt.inter_packet = 0;
1680                 card->info.blkt.inter_packet_jumbo = 0;
1681         }
1682 }
1683
1684 static void qeth_init_tokens(struct qeth_card *card)
1685 {
1686         card->token.issuer_rm_w = 0x00010103UL;
1687         card->token.cm_filter_w = 0x00010108UL;
1688         card->token.cm_connection_w = 0x0001010aUL;
1689         card->token.ulp_filter_w = 0x0001010bUL;
1690         card->token.ulp_connection_w = 0x0001010dUL;
1691 }
1692
1693 static void qeth_init_func_level(struct qeth_card *card)
1694 {
1695         switch (card->info.type) {
1696         case QETH_CARD_TYPE_IQD:
1697                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1698                 break;
1699         case QETH_CARD_TYPE_OSD:
1700         case QETH_CARD_TYPE_OSN:
1701                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1702                 break;
1703         default:
1704                 break;
1705         }
1706 }
1707
1708 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1709                 void (*idx_reply_cb)(struct qeth_channel *,
1710                         struct qeth_cmd_buffer *))
1711 {
1712         struct qeth_cmd_buffer *iob;
1713         unsigned long flags;
1714         int rc;
1715         struct qeth_card *card;
1716
1717         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1718         card = CARD_FROM_CDEV(channel->ccwdev);
1719         iob = qeth_get_buffer(channel);
1720         iob->callback = idx_reply_cb;
1721         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1722         channel->ccw.count = QETH_BUFSIZE;
1723         channel->ccw.cda = (__u32) __pa(iob->data);
1724
1725         wait_event(card->wait_q,
1726                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1727         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1728         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1729         rc = ccw_device_start(channel->ccwdev,
1730                               &channel->ccw, (addr_t) iob, 0, 0);
1731         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1732
1733         if (rc) {
1734                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1735                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1736                 atomic_set(&channel->irq_pending, 0);
1737                 wake_up(&card->wait_q);
1738                 return rc;
1739         }
1740         rc = wait_event_interruptible_timeout(card->wait_q,
1741                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1742         if (rc == -ERESTARTSYS)
1743                 return rc;
1744         if (channel->state != CH_STATE_UP) {
1745                 rc = -ETIME;
1746                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1747                 qeth_clear_cmd_buffers(channel);
1748         } else
1749                 rc = 0;
1750         return rc;
1751 }
1752
1753 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1754                 void (*idx_reply_cb)(struct qeth_channel *,
1755                         struct qeth_cmd_buffer *))
1756 {
1757         struct qeth_card *card;
1758         struct qeth_cmd_buffer *iob;
1759         unsigned long flags;
1760         __u16 temp;
1761         __u8 tmp;
1762         int rc;
1763         struct ccw_dev_id temp_devid;
1764
1765         card = CARD_FROM_CDEV(channel->ccwdev);
1766
1767         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1768
1769         iob = qeth_get_buffer(channel);
1770         iob->callback = idx_reply_cb;
1771         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1772         channel->ccw.count = IDX_ACTIVATE_SIZE;
1773         channel->ccw.cda = (__u32) __pa(iob->data);
1774         if (channel == &card->write) {
1775                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1776                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1777                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1778                 card->seqno.trans_hdr++;
1779         } else {
1780                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1781                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1782                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1783         }
1784         tmp = ((__u8)card->info.portno) | 0x80;
1785         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1786         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1787                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1788         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1789                &card->info.func_level, sizeof(__u16));
1790         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1791         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1792         temp = (card->info.cula << 8) + card->info.unit_addr2;
1793         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1794
1795         wait_event(card->wait_q,
1796                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1797         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1798         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1799         rc = ccw_device_start(channel->ccwdev,
1800                               &channel->ccw, (addr_t) iob, 0, 0);
1801         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1802
1803         if (rc) {
1804                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1805                         rc);
1806                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1807                 atomic_set(&channel->irq_pending, 0);
1808                 wake_up(&card->wait_q);
1809                 return rc;
1810         }
1811         rc = wait_event_interruptible_timeout(card->wait_q,
1812                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1813         if (rc == -ERESTARTSYS)
1814                 return rc;
1815         if (channel->state != CH_STATE_ACTIVATING) {
1816                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1817                         " failed to recover an error on the device\n");
1818                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1819                         dev_name(&channel->ccwdev->dev));
1820                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1821                 qeth_clear_cmd_buffers(channel);
1822                 return -ETIME;
1823         }
1824         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1825 }
1826
1827 static int qeth_peer_func_level(int level)
1828 {
1829         if ((level & 0xff) == 8)
1830                 return (level & 0xff) + 0x400;
1831         if (((level >> 8) & 3) == 1)
1832                 return (level & 0xff) + 0x200;
1833         return level;
1834 }
1835
1836 static void qeth_idx_write_cb(struct qeth_channel *channel,
1837                 struct qeth_cmd_buffer *iob)
1838 {
1839         struct qeth_card *card;
1840         __u16 temp;
1841
1842         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1843
1844         if (channel->state == CH_STATE_DOWN) {
1845                 channel->state = CH_STATE_ACTIVATING;
1846                 goto out;
1847         }
1848         card = CARD_FROM_CDEV(channel->ccwdev);
1849
1850         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1851                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1852                         dev_err(&card->write.ccwdev->dev,
1853                                 "The adapter is used exclusively by another "
1854                                 "host\n");
1855                 else
1856                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1857                                 " negative reply\n",
1858                                 dev_name(&card->write.ccwdev->dev));
1859                 goto out;
1860         }
1861         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1862         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1863                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1864                         "function level mismatch (sent: 0x%x, received: "
1865                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1866                         card->info.func_level, temp);
1867                 goto out;
1868         }
1869         channel->state = CH_STATE_UP;
1870 out:
1871         qeth_release_buffer(channel, iob);
1872 }
1873
1874 static void qeth_idx_read_cb(struct qeth_channel *channel,
1875                 struct qeth_cmd_buffer *iob)
1876 {
1877         struct qeth_card *card;
1878         __u16 temp;
1879
1880         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1881         if (channel->state == CH_STATE_DOWN) {
1882                 channel->state = CH_STATE_ACTIVATING;
1883                 goto out;
1884         }
1885
1886         card = CARD_FROM_CDEV(channel->ccwdev);
1887         if (qeth_check_idx_response(card, iob->data))
1888                         goto out;
1889
1890         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1891                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1892                 case QETH_IDX_ACT_ERR_EXCL:
1893                         dev_err(&card->write.ccwdev->dev,
1894                                 "The adapter is used exclusively by another "
1895                                 "host\n");
1896                         break;
1897                 case QETH_IDX_ACT_ERR_AUTH:
1898                 case QETH_IDX_ACT_ERR_AUTH_USER:
1899                         dev_err(&card->read.ccwdev->dev,
1900                                 "Setting the device online failed because of "
1901                                 "insufficient authorization\n");
1902                         break;
1903                 default:
1904                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1905                                 " negative reply\n",
1906                                 dev_name(&card->read.ccwdev->dev));
1907                 }
1908                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1909                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1910                 goto out;
1911         }
1912
1913 /**
1914  *  * temporary fix for microcode bug
1915  *   * to revert it,replace OR by AND
1916  *    */
1917         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1918              (card->info.type == QETH_CARD_TYPE_OSD))
1919                 card->info.portname_required = 1;
1920
1921         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1922         if (temp != qeth_peer_func_level(card->info.func_level)) {
1923                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1924                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1925                         dev_name(&card->read.ccwdev->dev),
1926                         card->info.func_level, temp);
1927                 goto out;
1928         }
1929         memcpy(&card->token.issuer_rm_r,
1930                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1931                QETH_MPC_TOKEN_LENGTH);
1932         memcpy(&card->info.mcl_level[0],
1933                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1934         channel->state = CH_STATE_UP;
1935 out:
1936         qeth_release_buffer(channel, iob);
1937 }
1938
1939 void qeth_prepare_control_data(struct qeth_card *card, int len,
1940                 struct qeth_cmd_buffer *iob)
1941 {
1942         qeth_setup_ccw(&card->write, iob->data, len);
1943         iob->callback = qeth_release_buffer;
1944
1945         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1946                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1947         card->seqno.trans_hdr++;
1948         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1949                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1950         card->seqno.pdu_hdr++;
1951         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1952                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1953         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1954 }
1955 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1956
1957 int qeth_send_control_data(struct qeth_card *card, int len,
1958                 struct qeth_cmd_buffer *iob,
1959                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1960                         unsigned long),
1961                 void *reply_param)
1962 {
1963         int rc;
1964         unsigned long flags;
1965         struct qeth_reply *reply = NULL;
1966         unsigned long timeout, event_timeout;
1967         struct qeth_ipa_cmd *cmd;
1968
1969         QETH_CARD_TEXT(card, 2, "sendctl");
1970
1971         if (card->read_or_write_problem) {
1972                 qeth_release_buffer(iob->channel, iob);
1973                 return -EIO;
1974         }
1975         reply = qeth_alloc_reply(card);
1976         if (!reply) {
1977                 return -ENOMEM;
1978         }
1979         reply->callback = reply_cb;
1980         reply->param = reply_param;
1981         if (card->state == CARD_STATE_DOWN)
1982                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1983         else
1984                 reply->seqno = card->seqno.ipa++;
1985         init_waitqueue_head(&reply->wait_q);
1986         spin_lock_irqsave(&card->lock, flags);
1987         list_add_tail(&reply->list, &card->cmd_waiter_list);
1988         spin_unlock_irqrestore(&card->lock, flags);
1989         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1990
1991         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1992         qeth_prepare_control_data(card, len, iob);
1993
1994         if (IS_IPA(iob->data))
1995                 event_timeout = QETH_IPA_TIMEOUT;
1996         else
1997                 event_timeout = QETH_TIMEOUT;
1998         timeout = jiffies + event_timeout;
1999
2000         QETH_CARD_TEXT(card, 6, "noirqpnd");
2001         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2002         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2003                               (addr_t) iob, 0, 0);
2004         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2005         if (rc) {
2006                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2007                         "ccw_device_start rc = %i\n",
2008                         dev_name(&card->write.ccwdev->dev), rc);
2009                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2010                 spin_lock_irqsave(&card->lock, flags);
2011                 list_del_init(&reply->list);
2012                 qeth_put_reply(reply);
2013                 spin_unlock_irqrestore(&card->lock, flags);
2014                 qeth_release_buffer(iob->channel, iob);
2015                 atomic_set(&card->write.irq_pending, 0);
2016                 wake_up(&card->wait_q);
2017                 return rc;
2018         }
2019
2020         /* we have only one long running ipassist, since we can ensure
2021            process context of this command we can sleep */
2022         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2023         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2024             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2025                 if (!wait_event_timeout(reply->wait_q,
2026                     atomic_read(&reply->received), event_timeout))
2027                         goto time_err;
2028         } else {
2029                 while (!atomic_read(&reply->received)) {
2030                         if (time_after(jiffies, timeout))
2031                                 goto time_err;
2032                         cpu_relax();
2033                 };
2034         }
2035
2036         if (reply->rc == -EIO)
2037                 goto error;
2038         rc = reply->rc;
2039         qeth_put_reply(reply);
2040         return rc;
2041
2042 time_err:
2043         reply->rc = -ETIME;
2044         spin_lock_irqsave(&reply->card->lock, flags);
2045         list_del_init(&reply->list);
2046         spin_unlock_irqrestore(&reply->card->lock, flags);
2047         atomic_inc(&reply->received);
2048 error:
2049         atomic_set(&card->write.irq_pending, 0);
2050         qeth_release_buffer(iob->channel, iob);
2051         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2052         rc = reply->rc;
2053         qeth_put_reply(reply);
2054         return rc;
2055 }
2056 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2057
2058 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2059                 unsigned long data)
2060 {
2061         struct qeth_cmd_buffer *iob;
2062
2063         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2064
2065         iob = (struct qeth_cmd_buffer *) data;
2066         memcpy(&card->token.cm_filter_r,
2067                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2068                QETH_MPC_TOKEN_LENGTH);
2069         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2070         return 0;
2071 }
2072
2073 static int qeth_cm_enable(struct qeth_card *card)
2074 {
2075         int rc;
2076         struct qeth_cmd_buffer *iob;
2077
2078         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2079
2080         iob = qeth_wait_for_buffer(&card->write);
2081         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2082         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2083                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2084         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2085                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2086
2087         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2088                                     qeth_cm_enable_cb, NULL);
2089         return rc;
2090 }
2091
2092 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2093                 unsigned long data)
2094 {
2095
2096         struct qeth_cmd_buffer *iob;
2097
2098         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2099
2100         iob = (struct qeth_cmd_buffer *) data;
2101         memcpy(&card->token.cm_connection_r,
2102                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2103                QETH_MPC_TOKEN_LENGTH);
2104         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2105         return 0;
2106 }
2107
2108 static int qeth_cm_setup(struct qeth_card *card)
2109 {
2110         int rc;
2111         struct qeth_cmd_buffer *iob;
2112
2113         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2114
2115         iob = qeth_wait_for_buffer(&card->write);
2116         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2117         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2118                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2119         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2120                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2121         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2122                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2123         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2124                                     qeth_cm_setup_cb, NULL);
2125         return rc;
2126
2127 }
2128
2129 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2130 {
2131         switch (card->info.type) {
2132         case QETH_CARD_TYPE_UNKNOWN:
2133                 return 1500;
2134         case QETH_CARD_TYPE_IQD:
2135                 return card->info.max_mtu;
2136         case QETH_CARD_TYPE_OSD:
2137                 switch (card->info.link_type) {
2138                 case QETH_LINK_TYPE_HSTR:
2139                 case QETH_LINK_TYPE_LANE_TR:
2140                         return 2000;
2141                 default:
2142                         return 1492;
2143                 }
2144         case QETH_CARD_TYPE_OSM:
2145         case QETH_CARD_TYPE_OSX:
2146                 return 1492;
2147         default:
2148                 return 1500;
2149         }
2150 }
2151
2152 static inline int qeth_get_mtu_outof_framesize(int framesize)
2153 {
2154         switch (framesize) {
2155         case 0x4000:
2156                 return 8192;
2157         case 0x6000:
2158                 return 16384;
2159         case 0xa000:
2160                 return 32768;
2161         case 0xffff:
2162                 return 57344;
2163         default:
2164                 return 0;
2165         }
2166 }
2167
2168 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2169 {
2170         switch (card->info.type) {
2171         case QETH_CARD_TYPE_OSD:
2172         case QETH_CARD_TYPE_OSM:
2173         case QETH_CARD_TYPE_OSX:
2174         case QETH_CARD_TYPE_IQD:
2175                 return ((mtu >= 576) &&
2176                         (mtu <= card->info.max_mtu));
2177         case QETH_CARD_TYPE_OSN:
2178         case QETH_CARD_TYPE_UNKNOWN:
2179         default:
2180                 return 1;
2181         }
2182 }
2183
2184 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2185                 unsigned long data)
2186 {
2187
2188         __u16 mtu, framesize;
2189         __u16 len;
2190         __u8 link_type;
2191         struct qeth_cmd_buffer *iob;
2192
2193         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2194
2195         iob = (struct qeth_cmd_buffer *) data;
2196         memcpy(&card->token.ulp_filter_r,
2197                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2198                QETH_MPC_TOKEN_LENGTH);
2199         if (card->info.type == QETH_CARD_TYPE_IQD) {
2200                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2201                 mtu = qeth_get_mtu_outof_framesize(framesize);
2202                 if (!mtu) {
2203                         iob->rc = -EINVAL;
2204                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2205                         return 0;
2206                 }
2207                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2208                         /* frame size has changed */
2209                         if (card->dev &&
2210                             ((card->dev->mtu == card->info.initial_mtu) ||
2211                              (card->dev->mtu > mtu)))
2212                                 card->dev->mtu = mtu;
2213                         qeth_free_qdio_buffers(card);
2214                 }
2215                 card->info.initial_mtu = mtu;
2216                 card->info.max_mtu = mtu;
2217                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2218         } else {
2219                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2220                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2221                         iob->data);
2222                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2223         }
2224
2225         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2226         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2227                 memcpy(&link_type,
2228                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2229                 card->info.link_type = link_type;
2230         } else
2231                 card->info.link_type = 0;
2232         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2233         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2234         return 0;
2235 }
2236
2237 static int qeth_ulp_enable(struct qeth_card *card)
2238 {
2239         int rc;
2240         char prot_type;
2241         struct qeth_cmd_buffer *iob;
2242
2243         /*FIXME: trace view callbacks*/
2244         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2245
2246         iob = qeth_wait_for_buffer(&card->write);
2247         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2248
2249         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2250                 (__u8) card->info.portno;
2251         if (card->options.layer2)
2252                 if (card->info.type == QETH_CARD_TYPE_OSN)
2253                         prot_type = QETH_PROT_OSN2;
2254                 else
2255                         prot_type = QETH_PROT_LAYER2;
2256         else
2257                 prot_type = QETH_PROT_TCPIP;
2258
2259         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2260         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2261                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2262         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2263                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2264         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2265                card->info.portname, 9);
2266         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2267                                     qeth_ulp_enable_cb, NULL);
2268         return rc;
2269
2270 }
2271
2272 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2273                 unsigned long data)
2274 {
2275         struct qeth_cmd_buffer *iob;
2276         int rc = 0;
2277
2278         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2279
2280         iob = (struct qeth_cmd_buffer *) data;
2281         memcpy(&card->token.ulp_connection_r,
2282                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2283                QETH_MPC_TOKEN_LENGTH);
2284         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2285                      3)) {
2286                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2287                 dev_err(&card->gdev->dev, "A connection could not be "
2288                         "established because of an OLM limit\n");
2289                 iob->rc = -EMLINK;
2290         }
2291         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2292         return rc;
2293 }
2294
2295 static int qeth_ulp_setup(struct qeth_card *card)
2296 {
2297         int rc;
2298         __u16 temp;
2299         struct qeth_cmd_buffer *iob;
2300         struct ccw_dev_id dev_id;
2301
2302         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2303
2304         iob = qeth_wait_for_buffer(&card->write);
2305         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2306
2307         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2308                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2309         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2310                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2311         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2312                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2313
2314         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2315         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2316         temp = (card->info.cula << 8) + card->info.unit_addr2;
2317         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2318         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2319                                     qeth_ulp_setup_cb, NULL);
2320         return rc;
2321 }
2322
2323 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2324 {
2325         int rc;
2326         struct qeth_qdio_out_buffer *newbuf;
2327
2328         rc = 0;
2329         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2330         if (!newbuf) {
2331                 rc = -ENOMEM;
2332                 goto out;
2333         }
2334         newbuf->buffer = &q->qdio_bufs[bidx];
2335         skb_queue_head_init(&newbuf->skb_list);
2336         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2337         newbuf->q = q;
2338         newbuf->aob = NULL;
2339         newbuf->next_pending = q->bufs[bidx];
2340         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2341         q->bufs[bidx] = newbuf;
2342         if (q->bufstates) {
2343                 q->bufstates[bidx].user = newbuf;
2344                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2345                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2346                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2347                                 (long) newbuf->next_pending);
2348         }
2349 out:
2350         return rc;
2351 }
2352
2353
2354 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2355 {
2356         int i, j;
2357
2358         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2359
2360         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2361                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2362                 return 0;
2363
2364         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2365                                    GFP_KERNEL);
2366         if (!card->qdio.in_q)
2367                 goto out_nomem;
2368         QETH_DBF_TEXT(SETUP, 2, "inq");
2369         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2370         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2371         /* give inbound qeth_qdio_buffers their qdio_buffers */
2372         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2373                 card->qdio.in_q->bufs[i].buffer =
2374                         &card->qdio.in_q->qdio_bufs[i];
2375                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2376         }
2377         /* inbound buffer pool */
2378         if (qeth_alloc_buffer_pool(card))
2379                 goto out_freeinq;
2380
2381         /* outbound */
2382         card->qdio.out_qs =
2383                 kzalloc(card->qdio.no_out_queues *
2384                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2385         if (!card->qdio.out_qs)
2386                 goto out_freepool;
2387         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2388                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2389                                                GFP_KERNEL);
2390                 if (!card->qdio.out_qs[i])
2391                         goto out_freeoutq;
2392                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2393                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2394                 card->qdio.out_qs[i]->queue_no = i;
2395                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2396                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2397                         BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2398                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2399                                 goto out_freeoutqbufs;
2400                 }
2401         }
2402
2403         /* completion */
2404         if (qeth_alloc_cq(card))
2405                 goto out_freeoutq;
2406
2407         return 0;
2408
2409 out_freeoutqbufs:
2410         while (j > 0) {
2411                 --j;
2412                 kmem_cache_free(qeth_qdio_outbuf_cache,
2413                                 card->qdio.out_qs[i]->bufs[j]);
2414                 card->qdio.out_qs[i]->bufs[j] = NULL;
2415         }
2416 out_freeoutq:
2417         while (i > 0) {
2418                 kfree(card->qdio.out_qs[--i]);
2419                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2420         }
2421         kfree(card->qdio.out_qs);
2422         card->qdio.out_qs = NULL;
2423 out_freepool:
2424         qeth_free_buffer_pool(card);
2425 out_freeinq:
2426         kfree(card->qdio.in_q);
2427         card->qdio.in_q = NULL;
2428 out_nomem:
2429         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2430         return -ENOMEM;
2431 }
2432
2433 static void qeth_create_qib_param_field(struct qeth_card *card,
2434                 char *param_field)
2435 {
2436
2437         param_field[0] = _ascebc['P'];
2438         param_field[1] = _ascebc['C'];
2439         param_field[2] = _ascebc['I'];
2440         param_field[3] = _ascebc['T'];
2441         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2442         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2443         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2444 }
2445
2446 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2447                 char *param_field)
2448 {
2449         param_field[16] = _ascebc['B'];
2450         param_field[17] = _ascebc['L'];
2451         param_field[18] = _ascebc['K'];
2452         param_field[19] = _ascebc['T'];
2453         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2454         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2455         *((unsigned int *) (&param_field[28])) =
2456                 card->info.blkt.inter_packet_jumbo;
2457 }
2458
2459 static int qeth_qdio_activate(struct qeth_card *card)
2460 {
2461         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2462         return qdio_activate(CARD_DDEV(card));
2463 }
2464
2465 static int qeth_dm_act(struct qeth_card *card)
2466 {
2467         int rc;
2468         struct qeth_cmd_buffer *iob;
2469
2470         QETH_DBF_TEXT(SETUP, 2, "dmact");
2471
2472         iob = qeth_wait_for_buffer(&card->write);
2473         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2474
2475         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2476                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2477         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2478                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2479         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2480         return rc;
2481 }
2482
2483 static int qeth_mpc_initialize(struct qeth_card *card)
2484 {
2485         int rc;
2486
2487         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2488
2489         rc = qeth_issue_next_read(card);
2490         if (rc) {
2491                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2492                 return rc;
2493         }
2494         rc = qeth_cm_enable(card);
2495         if (rc) {
2496                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2497                 goto out_qdio;
2498         }
2499         rc = qeth_cm_setup(card);
2500         if (rc) {
2501                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2502                 goto out_qdio;
2503         }
2504         rc = qeth_ulp_enable(card);
2505         if (rc) {
2506                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2507                 goto out_qdio;
2508         }
2509         rc = qeth_ulp_setup(card);
2510         if (rc) {
2511                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2512                 goto out_qdio;
2513         }
2514         rc = qeth_alloc_qdio_buffers(card);
2515         if (rc) {
2516                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2517                 goto out_qdio;
2518         }
2519         rc = qeth_qdio_establish(card);
2520         if (rc) {
2521                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2522                 qeth_free_qdio_buffers(card);
2523                 goto out_qdio;
2524         }
2525         rc = qeth_qdio_activate(card);
2526         if (rc) {
2527                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2528                 goto out_qdio;
2529         }
2530         rc = qeth_dm_act(card);
2531         if (rc) {
2532                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2533                 goto out_qdio;
2534         }
2535
2536         return 0;
2537 out_qdio:
2538         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2539         return rc;
2540 }
2541
2542 static void qeth_print_status_with_portname(struct qeth_card *card)
2543 {
2544         char dbf_text[15];
2545         int i;
2546
2547         sprintf(dbf_text, "%s", card->info.portname + 1);
2548         for (i = 0; i < 8; i++)
2549                 dbf_text[i] =
2550                         (char) _ebcasc[(__u8) dbf_text[i]];
2551         dbf_text[8] = 0;
2552         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2553                "with link type %s (portname: %s)\n",
2554                qeth_get_cardname(card),
2555                (card->info.mcl_level[0]) ? " (level: " : "",
2556                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2557                (card->info.mcl_level[0]) ? ")" : "",
2558                qeth_get_cardname_short(card),
2559                dbf_text);
2560
2561 }
2562
2563 static void qeth_print_status_no_portname(struct qeth_card *card)
2564 {
2565         if (card->info.portname[0])
2566                 dev_info(&card->gdev->dev, "Device is a%s "
2567                        "card%s%s%s\nwith link type %s "
2568                        "(no portname needed by interface).\n",
2569                        qeth_get_cardname(card),
2570                        (card->info.mcl_level[0]) ? " (level: " : "",
2571                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2572                        (card->info.mcl_level[0]) ? ")" : "",
2573                        qeth_get_cardname_short(card));
2574         else
2575                 dev_info(&card->gdev->dev, "Device is a%s "
2576                        "card%s%s%s\nwith link type %s.\n",
2577                        qeth_get_cardname(card),
2578                        (card->info.mcl_level[0]) ? " (level: " : "",
2579                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2580                        (card->info.mcl_level[0]) ? ")" : "",
2581                        qeth_get_cardname_short(card));
2582 }
2583
2584 void qeth_print_status_message(struct qeth_card *card)
2585 {
2586         switch (card->info.type) {
2587         case QETH_CARD_TYPE_OSD:
2588         case QETH_CARD_TYPE_OSM:
2589         case QETH_CARD_TYPE_OSX:
2590                 /* VM will use a non-zero first character
2591                  * to indicate a HiperSockets like reporting
2592                  * of the level OSA sets the first character to zero
2593                  * */
2594                 if (!card->info.mcl_level[0]) {
2595                         sprintf(card->info.mcl_level, "%02x%02x",
2596                                 card->info.mcl_level[2],
2597                                 card->info.mcl_level[3]);
2598
2599                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2600                         break;
2601                 }
2602                 /* fallthrough */
2603         case QETH_CARD_TYPE_IQD:
2604                 if ((card->info.guestlan) ||
2605                     (card->info.mcl_level[0] & 0x80)) {
2606                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2607                                 card->info.mcl_level[0]];
2608                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2609                                 card->info.mcl_level[1]];
2610                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2611                                 card->info.mcl_level[2]];
2612                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2613                                 card->info.mcl_level[3]];
2614                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2615                 }
2616                 break;
2617         default:
2618                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2619         }
2620         if (card->info.portname_required)
2621                 qeth_print_status_with_portname(card);
2622         else
2623                 qeth_print_status_no_portname(card);
2624 }
2625 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2626
2627 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2628 {
2629         struct qeth_buffer_pool_entry *entry;
2630
2631         QETH_CARD_TEXT(card, 5, "inwrklst");
2632
2633         list_for_each_entry(entry,
2634                             &card->qdio.init_pool.entry_list, init_list) {
2635                 qeth_put_buffer_pool_entry(card, entry);
2636         }
2637 }
2638
2639 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2640                 struct qeth_card *card)
2641 {
2642         struct list_head *plh;
2643         struct qeth_buffer_pool_entry *entry;
2644         int i, free;
2645         struct page *page;
2646
2647         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2648                 return NULL;
2649
2650         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2651                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2652                 free = 1;
2653                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2654                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2655                                 free = 0;
2656                                 break;
2657                         }
2658                 }
2659                 if (free) {
2660                         list_del_init(&entry->list);
2661                         return entry;
2662                 }
2663         }
2664
2665         /* no free buffer in pool so take first one and swap pages */
2666         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2667                         struct qeth_buffer_pool_entry, list);
2668         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2669                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2670                         page = alloc_page(GFP_ATOMIC);
2671                         if (!page) {
2672                                 return NULL;
2673                         } else {
2674                                 free_page((unsigned long)entry->elements[i]);
2675                                 entry->elements[i] = page_address(page);
2676                                 if (card->options.performance_stats)
2677                                         card->perf_stats.sg_alloc_page_rx++;
2678                         }
2679                 }
2680         }
2681         list_del_init(&entry->list);
2682         return entry;
2683 }
2684
2685 static int qeth_init_input_buffer(struct qeth_card *card,
2686                 struct qeth_qdio_buffer *buf)
2687 {
2688         struct qeth_buffer_pool_entry *pool_entry;
2689         int i;
2690
2691         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2692                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2693                 if (!buf->rx_skb)
2694                         return 1;
2695         }
2696
2697         pool_entry = qeth_find_free_buffer_pool_entry(card);
2698         if (!pool_entry)
2699                 return 1;
2700
2701         /*
2702          * since the buffer is accessed only from the input_tasklet
2703          * there shouldn't be a need to synchronize; also, since we use
2704          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2705          * buffers
2706          */
2707
2708         buf->pool_entry = pool_entry;
2709         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2710                 buf->buffer->element[i].length = PAGE_SIZE;
2711                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2712                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2713                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2714                 else
2715                         buf->buffer->element[i].eflags = 0;
2716                 buf->buffer->element[i].sflags = 0;
2717         }
2718         return 0;
2719 }
2720
2721 int qeth_init_qdio_queues(struct qeth_card *card)
2722 {
2723         int i, j;
2724         int rc;
2725
2726         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2727
2728         /* inbound queue */
2729         memset(card->qdio.in_q->qdio_bufs, 0,
2730                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2731         qeth_initialize_working_pool_list(card);
2732         /*give only as many buffers to hardware as we have buffer pool entries*/
2733         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2734                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2735         card->qdio.in_q->next_buf_to_init =
2736                 card->qdio.in_buf_pool.buf_count - 1;
2737         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2738                      card->qdio.in_buf_pool.buf_count - 1);
2739         if (rc) {
2740                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2741                 return rc;
2742         }
2743
2744         /* completion */
2745         rc = qeth_cq_init(card);
2746         if (rc) {
2747                 return rc;
2748         }
2749
2750         /* outbound queue */
2751         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2752                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2753                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2754                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2755                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2756                                         card->qdio.out_qs[i]->bufs[j],
2757                                         QETH_QDIO_BUF_EMPTY);
2758                 }
2759                 card->qdio.out_qs[i]->card = card;
2760                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2761                 card->qdio.out_qs[i]->do_pack = 0;
2762                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2763                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2764                 atomic_set(&card->qdio.out_qs[i]->state,
2765                            QETH_OUT_Q_UNLOCKED);
2766         }
2767         return 0;
2768 }
2769 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2770
2771 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2772 {
2773         switch (link_type) {
2774         case QETH_LINK_TYPE_HSTR:
2775                 return 2;
2776         default:
2777                 return 1;
2778         }
2779 }
2780
2781 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2782                 struct qeth_ipa_cmd *cmd, __u8 command,
2783                 enum qeth_prot_versions prot)
2784 {
2785         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2786         cmd->hdr.command = command;
2787         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2788         cmd->hdr.seqno = card->seqno.ipa;
2789         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2790         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2791         if (card->options.layer2)
2792                 cmd->hdr.prim_version_no = 2;
2793         else
2794                 cmd->hdr.prim_version_no = 1;
2795         cmd->hdr.param_count = 1;
2796         cmd->hdr.prot_version = prot;
2797         cmd->hdr.ipa_supported = 0;
2798         cmd->hdr.ipa_enabled = 0;
2799 }
2800
2801 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2802                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2803 {
2804         struct qeth_cmd_buffer *iob;
2805         struct qeth_ipa_cmd *cmd;
2806
2807         iob = qeth_wait_for_buffer(&card->write);
2808         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2809         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2810
2811         return iob;
2812 }
2813 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2814
2815 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2816                 char prot_type)
2817 {
2818         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2819         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2820         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2821                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2822 }
2823 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2824
2825 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2826                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2827                         unsigned long),
2828                 void *reply_param)
2829 {
2830         int rc;
2831         char prot_type;
2832
2833         QETH_CARD_TEXT(card, 4, "sendipa");
2834
2835         if (card->options.layer2)
2836                 if (card->info.type == QETH_CARD_TYPE_OSN)
2837                         prot_type = QETH_PROT_OSN2;
2838                 else
2839                         prot_type = QETH_PROT_LAYER2;
2840         else
2841                 prot_type = QETH_PROT_TCPIP;
2842         qeth_prepare_ipa_cmd(card, iob, prot_type);
2843         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2844                                                 iob, reply_cb, reply_param);
2845         if (rc == -ETIME) {
2846                 qeth_clear_ipacmd_list(card);
2847                 qeth_schedule_recovery(card);
2848         }
2849         return rc;
2850 }
2851 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2852
2853 int qeth_send_startlan(struct qeth_card *card)
2854 {
2855         int rc;
2856         struct qeth_cmd_buffer *iob;
2857
2858         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2859
2860         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2861         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2862         return rc;
2863 }
2864 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2865
2866 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2867                 struct qeth_reply *reply, unsigned long data)
2868 {
2869         struct qeth_ipa_cmd *cmd;
2870
2871         QETH_CARD_TEXT(card, 4, "defadpcb");
2872
2873         cmd = (struct qeth_ipa_cmd *) data;
2874         if (cmd->hdr.return_code == 0)
2875                 cmd->hdr.return_code =
2876                         cmd->data.setadapterparms.hdr.return_code;
2877         return 0;
2878 }
2879 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2880
2881 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2882                 struct qeth_reply *reply, unsigned long data)
2883 {
2884         struct qeth_ipa_cmd *cmd;
2885
2886         QETH_CARD_TEXT(card, 3, "quyadpcb");
2887
2888         cmd = (struct qeth_ipa_cmd *) data;
2889         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2890                 card->info.link_type =
2891                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2892                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2893         }
2894         card->options.adp.supported_funcs =
2895                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2896         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2897 }
2898
2899 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2900                 __u32 command, __u32 cmdlen)
2901 {
2902         struct qeth_cmd_buffer *iob;
2903         struct qeth_ipa_cmd *cmd;
2904
2905         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2906                                      QETH_PROT_IPV4);
2907         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2908         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2909         cmd->data.setadapterparms.hdr.command_code = command;
2910         cmd->data.setadapterparms.hdr.used_total = 1;
2911         cmd->data.setadapterparms.hdr.seq_no = 1;
2912
2913         return iob;
2914 }
2915 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2916
2917 int qeth_query_setadapterparms(struct qeth_card *card)
2918 {
2919         int rc;
2920         struct qeth_cmd_buffer *iob;
2921
2922         QETH_CARD_TEXT(card, 3, "queryadp");
2923         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2924                                    sizeof(struct qeth_ipacmd_setadpparms));
2925         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2926         return rc;
2927 }
2928 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2929
2930 static int qeth_query_ipassists_cb(struct qeth_card *card,
2931                 struct qeth_reply *reply, unsigned long data)
2932 {
2933         struct qeth_ipa_cmd *cmd;
2934
2935         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2936
2937         cmd = (struct qeth_ipa_cmd *) data;
2938         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2939                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2940                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2941         } else {
2942                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2943                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2944         }
2945         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2946         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
2947         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
2948         return 0;
2949 }
2950
2951 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2952 {
2953         int rc;
2954         struct qeth_cmd_buffer *iob;
2955
2956         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2957         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2958         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2959         return rc;
2960 }
2961 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2962
2963 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2964                 struct qeth_reply *reply, unsigned long data)
2965 {
2966         struct qeth_ipa_cmd *cmd;
2967         __u16 rc;
2968
2969         cmd = (struct qeth_ipa_cmd *)data;
2970         rc = cmd->hdr.return_code;
2971         if (rc)
2972                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2973         else
2974                 card->info.diagass_support = cmd->data.diagass.ext;
2975         return 0;
2976 }
2977
2978 static int qeth_query_setdiagass(struct qeth_card *card)
2979 {
2980         struct qeth_cmd_buffer *iob;
2981         struct qeth_ipa_cmd    *cmd;
2982
2983         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2984         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2985         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2986         cmd->data.diagass.subcmd_len = 16;
2987         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2988         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2989 }
2990
2991 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2992 {
2993         unsigned long info = get_zeroed_page(GFP_KERNEL);
2994         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2995         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2996         struct ccw_dev_id ccwid;
2997         int level, rc;
2998
2999         tid->chpid = card->info.chpid;
3000         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3001         tid->ssid = ccwid.ssid;
3002         tid->devno = ccwid.devno;
3003         if (!info)
3004                 return;
3005
3006         rc = stsi(NULL, 0, 0, 0);
3007         if (rc == -ENOSYS)
3008                 level = rc;
3009         else
3010                 level = (((unsigned int) rc) >> 28);
3011
3012         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
3013                 tid->lparnr = info222->lpar_number;
3014
3015         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
3016                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3017                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3018         }
3019         free_page(info);
3020         return;
3021 }
3022
3023 static int qeth_hw_trap_cb(struct qeth_card *card,
3024                 struct qeth_reply *reply, unsigned long data)
3025 {
3026         struct qeth_ipa_cmd *cmd;
3027         __u16 rc;
3028
3029         cmd = (struct qeth_ipa_cmd *)data;
3030         rc = cmd->hdr.return_code;
3031         if (rc)
3032                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3033         return 0;
3034 }
3035
3036 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3037 {
3038         struct qeth_cmd_buffer *iob;
3039         struct qeth_ipa_cmd *cmd;
3040
3041         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3042         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3043         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3044         cmd->data.diagass.subcmd_len = 80;
3045         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3046         cmd->data.diagass.type = 1;
3047         cmd->data.diagass.action = action;
3048         switch (action) {
3049         case QETH_DIAGS_TRAP_ARM:
3050                 cmd->data.diagass.options = 0x0003;
3051                 cmd->data.diagass.ext = 0x00010000 +
3052                         sizeof(struct qeth_trap_id);
3053                 qeth_get_trap_id(card,
3054                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3055                 break;
3056         case QETH_DIAGS_TRAP_DISARM:
3057                 cmd->data.diagass.options = 0x0001;
3058                 break;
3059         case QETH_DIAGS_TRAP_CAPTURE:
3060                 break;
3061         }
3062         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3063 }
3064 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3065
3066 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3067                 unsigned int qdio_error, const char *dbftext)
3068 {
3069         if (qdio_error) {
3070                 QETH_CARD_TEXT(card, 2, dbftext);
3071                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3072                                buf->element[15].sflags);
3073                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3074                                buf->element[14].sflags);
3075                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3076                 if ((buf->element[15].sflags) == 0x12) {
3077                         card->stats.rx_dropped++;
3078                         return 0;
3079                 } else
3080                         return 1;
3081         }
3082         return 0;
3083 }
3084 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3085
3086 void qeth_buffer_reclaim_work(struct work_struct *work)
3087 {
3088         struct qeth_card *card = container_of(work, struct qeth_card,
3089                 buffer_reclaim_work.work);
3090
3091         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3092         qeth_queue_input_buffer(card, card->reclaim_index);
3093 }
3094
3095 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3096 {
3097         struct qeth_qdio_q *queue = card->qdio.in_q;
3098         struct list_head *lh;
3099         int count;
3100         int i;
3101         int rc;
3102         int newcount = 0;
3103
3104         count = (index < queue->next_buf_to_init)?
3105                 card->qdio.in_buf_pool.buf_count -
3106                 (queue->next_buf_to_init - index) :
3107                 card->qdio.in_buf_pool.buf_count -
3108                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3109         /* only requeue at a certain threshold to avoid SIGAs */
3110         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3111                 for (i = queue->next_buf_to_init;
3112                      i < queue->next_buf_to_init + count; ++i) {
3113                         if (qeth_init_input_buffer(card,
3114                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3115                                 break;
3116                         } else {
3117                                 newcount++;
3118                         }
3119                 }
3120
3121                 if (newcount < count) {
3122                         /* we are in memory shortage so we switch back to
3123                            traditional skb allocation and drop packages */
3124                         atomic_set(&card->force_alloc_skb, 3);
3125                         count = newcount;
3126                 } else {
3127                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3128                 }
3129
3130                 if (!count) {
3131                         i = 0;
3132                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3133                                 i++;
3134                         if (i == card->qdio.in_buf_pool.buf_count) {
3135                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3136                                 card->reclaim_index = index;
3137                                 schedule_delayed_work(
3138                                         &card->buffer_reclaim_work,
3139                                         QETH_RECLAIM_WORK_TIME);
3140                         }
3141                         return;
3142                 }
3143
3144                 /*
3145                  * according to old code it should be avoided to requeue all
3146                  * 128 buffers in order to benefit from PCI avoidance.
3147                  * this function keeps at least one buffer (the buffer at
3148                  * 'index') un-requeued -> this buffer is the first buffer that
3149                  * will be requeued the next time
3150                  */
3151                 if (card->options.performance_stats) {
3152                         card->perf_stats.inbound_do_qdio_cnt++;
3153                         card->perf_stats.inbound_do_qdio_start_time =
3154                                 qeth_get_micros();
3155                 }
3156                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3157                              queue->next_buf_to_init, count);
3158                 if (card->options.performance_stats)
3159                         card->perf_stats.inbound_do_qdio_time +=
3160                                 qeth_get_micros() -
3161                                 card->perf_stats.inbound_do_qdio_start_time;
3162                 if (rc) {
3163                         QETH_CARD_TEXT(card, 2, "qinberr");
3164                 }
3165                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3166                                           QDIO_MAX_BUFFERS_PER_Q;
3167         }
3168 }
3169 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3170
3171 static int qeth_handle_send_error(struct qeth_card *card,
3172                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3173 {
3174         int sbalf15 = buffer->buffer->element[15].sflags;
3175
3176         QETH_CARD_TEXT(card, 6, "hdsnderr");
3177         if (card->info.type == QETH_CARD_TYPE_IQD) {
3178                 if (sbalf15 == 0) {
3179                         qdio_err = 0;
3180                 } else {
3181                         qdio_err = 1;
3182                 }
3183         }
3184         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3185
3186         if (!qdio_err)
3187                 return QETH_SEND_ERROR_NONE;
3188
3189         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3190                 return QETH_SEND_ERROR_RETRY;
3191
3192         QETH_CARD_TEXT(card, 1, "lnkfail");
3193         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3194                        (u16)qdio_err, (u8)sbalf15);
3195         return QETH_SEND_ERROR_LINK_FAILURE;
3196 }
3197
3198 /*
3199  * Switched to packing state if the number of used buffers on a queue
3200  * reaches a certain limit.
3201  */
3202 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3203 {
3204         if (!queue->do_pack) {
3205                 if (atomic_read(&queue->used_buffers)
3206                     >= QETH_HIGH_WATERMARK_PACK){
3207                         /* switch non-PACKING -> PACKING */
3208                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3209                         if (queue->card->options.performance_stats)
3210                                 queue->card->perf_stats.sc_dp_p++;
3211                         queue->do_pack = 1;
3212                 }
3213         }
3214 }
3215
3216 /*
3217  * Switches from packing to non-packing mode. If there is a packing
3218  * buffer on the queue this buffer will be prepared to be flushed.
3219  * In that case 1 is returned to inform the caller. If no buffer
3220  * has to be flushed, zero is returned.
3221  */
3222 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3223 {
3224         struct qeth_qdio_out_buffer *buffer;
3225         int flush_count = 0;
3226
3227         if (queue->do_pack) {
3228                 if (atomic_read(&queue->used_buffers)
3229                     <= QETH_LOW_WATERMARK_PACK) {
3230                         /* switch PACKING -> non-PACKING */
3231                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3232                         if (queue->card->options.performance_stats)
3233                                 queue->card->perf_stats.sc_p_dp++;
3234                         queue->do_pack = 0;
3235                         /* flush packing buffers */
3236                         buffer = queue->bufs[queue->next_buf_to_fill];
3237                         if ((atomic_read(&buffer->state) ==
3238                                                 QETH_QDIO_BUF_EMPTY) &&
3239                             (buffer->next_element_to_fill > 0)) {
3240                                 atomic_set(&buffer->state,
3241                                            QETH_QDIO_BUF_PRIMED);
3242                                 flush_count++;
3243                                 queue->next_buf_to_fill =
3244                                         (queue->next_buf_to_fill + 1) %
3245                                         QDIO_MAX_BUFFERS_PER_Q;
3246                         }
3247                 }
3248         }
3249         return flush_count;
3250 }
3251
3252
3253 /*
3254  * Called to flush a packing buffer if no more pci flags are on the queue.
3255  * Checks if there is a packing buffer and prepares it to be flushed.
3256  * In that case returns 1, otherwise zero.
3257  */
3258 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3259 {
3260         struct qeth_qdio_out_buffer *buffer;
3261
3262         buffer = queue->bufs[queue->next_buf_to_fill];
3263         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3264            (buffer->next_element_to_fill > 0)) {
3265                 /* it's a packing buffer */
3266                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3267                 queue->next_buf_to_fill =
3268                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3269                 return 1;
3270         }
3271         return 0;
3272 }
3273
3274 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3275                                int count)
3276 {
3277         struct qeth_qdio_out_buffer *buf;
3278         int rc;
3279         int i;
3280         unsigned int qdio_flags;
3281
3282         for (i = index; i < index + count; ++i) {
3283                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3284                 buf = queue->bufs[bidx];
3285                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3286                                 SBAL_EFLAGS_LAST_ENTRY;
3287
3288                 if (queue->bufstates)
3289                         queue->bufstates[bidx].user = buf;
3290
3291                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3292                         continue;
3293
3294                 if (!queue->do_pack) {
3295                         if ((atomic_read(&queue->used_buffers) >=
3296                                 (QETH_HIGH_WATERMARK_PACK -
3297                                  QETH_WATERMARK_PACK_FUZZ)) &&
3298                             !atomic_read(&queue->set_pci_flags_count)) {
3299                                 /* it's likely that we'll go to packing
3300                                  * mode soon */
3301                                 atomic_inc(&queue->set_pci_flags_count);
3302                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3303                         }
3304                 } else {
3305                         if (!atomic_read(&queue->set_pci_flags_count)) {
3306                                 /*
3307                                  * there's no outstanding PCI any more, so we
3308                                  * have to request a PCI to be sure the the PCI
3309                                  * will wake at some time in the future then we
3310                                  * can flush packed buffers that might still be
3311                                  * hanging around, which can happen if no
3312                                  * further send was requested by the stack
3313                                  */
3314                                 atomic_inc(&queue->set_pci_flags_count);
3315                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3316                         }
3317                 }
3318         }
3319
3320         queue->card->dev->trans_start = jiffies;
3321         if (queue->card->options.performance_stats) {
3322                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3323                 queue->card->perf_stats.outbound_do_qdio_start_time =
3324                         qeth_get_micros();
3325         }
3326         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3327         if (atomic_read(&queue->set_pci_flags_count))
3328                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3329         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3330                      queue->queue_no, index, count);
3331         if (queue->card->options.performance_stats)
3332                 queue->card->perf_stats.outbound_do_qdio_time +=
3333                         qeth_get_micros() -
3334                         queue->card->perf_stats.outbound_do_qdio_start_time;
3335         atomic_add(count, &queue->used_buffers);
3336         if (rc) {
3337                 queue->card->stats.tx_errors += count;
3338                 /* ignore temporary SIGA errors without busy condition */
3339                 if (rc == QDIO_ERROR_SIGA_TARGET)
3340                         return;
3341                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3342                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3343                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3344                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3345                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3346
3347                 /* this must not happen under normal circumstances. if it
3348                  * happens something is really wrong -> recover */
3349                 qeth_schedule_recovery(queue->card);
3350                 return;
3351         }
3352         if (queue->card->options.performance_stats)
3353                 queue->card->perf_stats.bufs_sent += count;
3354 }
3355
3356 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3357 {
3358         int index;
3359         int flush_cnt = 0;
3360         int q_was_packing = 0;
3361
3362         /*
3363          * check if weed have to switch to non-packing mode or if
3364          * we have to get a pci flag out on the queue
3365          */
3366         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3367             !atomic_read(&queue->set_pci_flags_count)) {
3368                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3369                                 QETH_OUT_Q_UNLOCKED) {
3370                         /*
3371                          * If we get in here, there was no action in
3372                          * do_send_packet. So, we check if there is a
3373                          * packing buffer to be flushed here.
3374                          */
3375                         netif_stop_queue(queue->card->dev);
3376                         index = queue->next_buf_to_fill;
3377                         q_was_packing = queue->do_pack;
3378                         /* queue->do_pack may change */
3379                         barrier();
3380                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3381                         if (!flush_cnt &&
3382                             !atomic_read(&queue->set_pci_flags_count))
3383                                 flush_cnt +=
3384                                         qeth_flush_buffers_on_no_pci(queue);
3385                         if (queue->card->options.performance_stats &&
3386                             q_was_packing)
3387                                 queue->card->perf_stats.bufs_sent_pack +=
3388                                         flush_cnt;
3389                         if (flush_cnt)
3390                                 qeth_flush_buffers(queue, index, flush_cnt);
3391                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3392                 }
3393         }
3394 }
3395
3396 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3397                 unsigned long card_ptr)
3398 {
3399         struct qeth_card *card = (struct qeth_card *)card_ptr;
3400
3401         if (card->dev && (card->dev->flags & IFF_UP))
3402                 napi_schedule(&card->napi);
3403 }
3404 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3405
3406 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3407 {
3408         int rc;
3409
3410         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3411                 rc = -1;
3412                 goto out;
3413         } else {
3414                 if (card->options.cq == cq) {
3415                         rc = 0;
3416                         goto out;
3417                 }
3418
3419                 if (card->state != CARD_STATE_DOWN &&
3420                     card->state != CARD_STATE_RECOVER) {
3421                         rc = -1;
3422                         goto out;
3423                 }
3424
3425                 qeth_free_qdio_buffers(card);
3426                 card->options.cq = cq;
3427                 rc = 0;
3428         }
3429 out:
3430         return rc;
3431
3432 }
3433 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3434
3435
3436 static void qeth_qdio_cq_handler(struct qeth_card *card,
3437                 unsigned int qdio_err,
3438                 unsigned int queue, int first_element, int count) {
3439         struct qeth_qdio_q *cq = card->qdio.c_q;
3440         int i;
3441         int rc;
3442
3443         if (!qeth_is_cq(card, queue))
3444                 goto out;
3445
3446         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3447         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3448         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3449
3450         if (qdio_err) {
3451                 netif_stop_queue(card->dev);
3452                 qeth_schedule_recovery(card);
3453                 goto out;
3454         }
3455
3456         if (card->options.performance_stats) {
3457                 card->perf_stats.cq_cnt++;
3458                 card->perf_stats.cq_start_time = qeth_get_micros();
3459         }
3460
3461         for (i = first_element; i < first_element + count; ++i) {
3462                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3463                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3464                 int e;
3465
3466                 e = 0;
3467                 while (buffer->element[e].addr) {
3468                         unsigned long phys_aob_addr;
3469
3470                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3471                         qeth_qdio_handle_aob(card, phys_aob_addr);
3472                         buffer->element[e].addr = NULL;
3473                         buffer->element[e].eflags = 0;
3474                         buffer->element[e].sflags = 0;
3475                         buffer->element[e].length = 0;
3476
3477                         ++e;
3478                 }
3479
3480                 buffer->element[15].eflags = 0;
3481                 buffer->element[15].sflags = 0;
3482         }
3483         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3484                     card->qdio.c_q->next_buf_to_init,
3485                     count);
3486         if (rc) {
3487                 dev_warn(&card->gdev->dev,
3488                         "QDIO reported an error, rc=%i\n", rc);
3489                 QETH_CARD_TEXT(card, 2, "qcqherr");
3490         }
3491         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3492                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3493
3494         netif_wake_queue(card->dev);
3495
3496         if (card->options.performance_stats) {
3497                 int delta_t = qeth_get_micros();
3498                 delta_t -= card->perf_stats.cq_start_time;
3499                 card->perf_stats.cq_time += delta_t;
3500         }
3501 out:
3502         return;
3503 }
3504
3505 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3506                 unsigned int queue, int first_elem, int count,
3507                 unsigned long card_ptr)
3508 {
3509         struct qeth_card *card = (struct qeth_card *)card_ptr;
3510
3511         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3512         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3513
3514         if (qeth_is_cq(card, queue))
3515                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3516         else if (qdio_err)
3517                 qeth_schedule_recovery(card);
3518
3519
3520 }
3521 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3522
3523 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3524                 unsigned int qdio_error, int __queue, int first_element,
3525                 int count, unsigned long card_ptr)
3526 {
3527         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3528         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3529         struct qeth_qdio_out_buffer *buffer;
3530         int i;
3531
3532         QETH_CARD_TEXT(card, 6, "qdouhdl");
3533         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3534                 QETH_CARD_TEXT(card, 2, "achkcond");
3535                 netif_stop_queue(card->dev);
3536                 qeth_schedule_recovery(card);
3537                 return;
3538         }
3539         if (card->options.performance_stats) {
3540                 card->perf_stats.outbound_handler_cnt++;
3541                 card->perf_stats.outbound_handler_start_time =
3542                         qeth_get_micros();
3543         }
3544         for (i = first_element; i < (first_element + count); ++i) {
3545                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3546                 buffer = queue->bufs[bidx];
3547                 qeth_handle_send_error(card, buffer, qdio_error);
3548
3549                 if (queue->bufstates &&
3550                     (queue->bufstates[bidx].flags &
3551                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3552                         BUG_ON(card->options.cq != QETH_CQ_ENABLED);
3553
3554                         if (atomic_cmpxchg(&buffer->state,
3555                                            QETH_QDIO_BUF_PRIMED,
3556                                            QETH_QDIO_BUF_PENDING) ==
3557                                 QETH_QDIO_BUF_PRIMED) {
3558                                 qeth_notify_skbs(queue, buffer,
3559                                                  TX_NOTIFY_PENDING);
3560                         }
3561                         buffer->aob = queue->bufstates[bidx].aob;
3562                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3563                         QETH_CARD_TEXT(queue->card, 5, "aob");
3564                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3565                                         virt_to_phys(buffer->aob));
3566                         BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3567                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3568                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3569                                 qeth_schedule_recovery(card);
3570                         }
3571                 } else {
3572                         if (card->options.cq == QETH_CQ_ENABLED) {
3573                                 enum iucv_tx_notify n;
3574
3575                                 n = qeth_compute_cq_notification(
3576                                         buffer->buffer->element[15].sflags, 0);
3577                                 qeth_notify_skbs(queue, buffer, n);
3578                         }
3579
3580                         qeth_clear_output_buffer(queue, buffer,
3581                                                 QETH_QDIO_BUF_EMPTY);
3582                 }
3583                 qeth_cleanup_handled_pending(queue, bidx, 0);
3584         }
3585         atomic_sub(count, &queue->used_buffers);
3586         /* check if we need to do something on this outbound queue */
3587         if (card->info.type != QETH_CARD_TYPE_IQD)
3588                 qeth_check_outbound_queue(queue);
3589
3590         netif_wake_queue(queue->card->dev);
3591         if (card->options.performance_stats)
3592                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3593                         card->perf_stats.outbound_handler_start_time;
3594 }
3595 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3596
3597 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3598                         int ipv, int cast_type)
3599 {
3600         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3601                      card->info.type == QETH_CARD_TYPE_OSX))
3602                 return card->qdio.default_out_queue;
3603         switch (card->qdio.no_out_queues) {
3604         case 4:
3605                 if (cast_type && card->info.is_multicast_different)
3606                         return card->info.is_multicast_different &
3607                                 (card->qdio.no_out_queues - 1);
3608                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3609                         const u8 tos = ip_hdr(skb)->tos;
3610
3611                         if (card->qdio.do_prio_queueing ==
3612                                 QETH_PRIO_Q_ING_TOS) {
3613                                 if (tos & IP_TOS_NOTIMPORTANT)
3614                                         return 3;
3615                                 if (tos & IP_TOS_HIGHRELIABILITY)
3616                                         return 2;
3617                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3618                                         return 1;
3619                                 if (tos & IP_TOS_LOWDELAY)
3620                                         return 0;
3621                         }
3622                         if (card->qdio.do_prio_queueing ==
3623                                 QETH_PRIO_Q_ING_PREC)
3624                                 return 3 - (tos >> 6);
3625                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3626                         /* TODO: IPv6!!! */
3627                 }
3628                 return card->qdio.default_out_queue;
3629         case 1: /* fallthrough for single-out-queue 1920-device */
3630         default:
3631                 return card->qdio.default_out_queue;
3632         }
3633 }
3634 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3635
3636 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3637                      struct sk_buff *skb, int elems)
3638 {
3639         int dlen = skb->len - skb->data_len;
3640         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3641                 PFN_DOWN((unsigned long)skb->data);
3642
3643         elements_needed += skb_shinfo(skb)->nr_frags;
3644         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3645                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3646                         "(Number=%d / Length=%d). Discarded.\n",
3647                         (elements_needed+elems), skb->len);
3648                 return 0;
3649         }
3650         return elements_needed;
3651 }
3652 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3653
3654 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3655 {
3656         int hroom, inpage, rest;
3657
3658         if (((unsigned long)skb->data & PAGE_MASK) !=
3659             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3660                 hroom = skb_headroom(skb);
3661                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3662                 rest = len - inpage;
3663                 if (rest > hroom)
3664                         return 1;
3665                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3666                 skb->data -= rest;
3667                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3668         }
3669         return 0;
3670 }
3671 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3672
3673 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3674         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3675         int offset)
3676 {
3677         int length = skb->len - skb->data_len;
3678         int length_here;
3679         int element;
3680         char *data;
3681         int first_lap, cnt;
3682         struct skb_frag_struct *frag;
3683
3684         element = *next_element_to_fill;
3685         data = skb->data;
3686         first_lap = (is_tso == 0 ? 1 : 0);
3687
3688         if (offset >= 0) {
3689                 data = skb->data + offset;
3690                 length -= offset;
3691                 first_lap = 0;
3692         }
3693
3694         while (length > 0) {
3695                 /* length_here is the remaining amount of data in this page */
3696                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3697                 if (length < length_here)
3698                         length_here = length;
3699
3700                 buffer->element[element].addr = data;
3701                 buffer->element[element].length = length_here;
3702                 length -= length_here;
3703                 if (!length) {
3704                         if (first_lap)
3705                                 if (skb_shinfo(skb)->nr_frags)
3706                                         buffer->element[element].eflags =
3707                                                 SBAL_EFLAGS_FIRST_FRAG;
3708                                 else
3709                                         buffer->element[element].eflags = 0;
3710                         else
3711                                 buffer->element[element].eflags =
3712                                     SBAL_EFLAGS_MIDDLE_FRAG;
3713                 } else {
3714                         if (first_lap)
3715                                 buffer->element[element].eflags =
3716                                     SBAL_EFLAGS_FIRST_FRAG;
3717                         else
3718                                 buffer->element[element].eflags =
3719                                     SBAL_EFLAGS_MIDDLE_FRAG;
3720                 }
3721                 data += length_here;
3722                 element++;
3723                 first_lap = 0;
3724         }
3725
3726         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3727                 frag = &skb_shinfo(skb)->frags[cnt];
3728                 buffer->element[element].addr = (char *)
3729                         page_to_phys(skb_frag_page(frag))
3730                         + frag->page_offset;
3731                 buffer->element[element].length = frag->size;
3732                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3733                 element++;
3734         }
3735
3736         if (buffer->element[element - 1].eflags)
3737                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3738         *next_element_to_fill = element;
3739 }
3740
3741 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3742                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3743                 struct qeth_hdr *hdr, int offset, int hd_len)
3744 {
3745         struct qdio_buffer *buffer;
3746         int flush_cnt = 0, hdr_len, large_send = 0;
3747
3748         buffer = buf->buffer;
3749         atomic_inc(&skb->users);
3750         skb_queue_tail(&buf->skb_list, skb);
3751
3752         /*check first on TSO ....*/
3753         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3754                 int element = buf->next_element_to_fill;
3755
3756                 hdr_len = sizeof(struct qeth_hdr_tso) +
3757                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3758                 /*fill first buffer entry only with header information */
3759                 buffer->element[element].addr = skb->data;
3760                 buffer->element[element].length = hdr_len;
3761                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3762                 buf->next_element_to_fill++;
3763                 skb->data += hdr_len;
3764                 skb->len  -= hdr_len;
3765                 large_send = 1;
3766         }
3767
3768         if (offset >= 0) {
3769                 int element = buf->next_element_to_fill;
3770                 buffer->element[element].addr = hdr;
3771                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3772                                                         hd_len;
3773                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3774                 buf->is_header[element] = 1;
3775                 buf->next_element_to_fill++;
3776         }
3777
3778         __qeth_fill_buffer(skb, buffer, large_send,
3779                 (int *)&buf->next_element_to_fill, offset);
3780
3781         if (!queue->do_pack) {
3782                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3783                 /* set state to PRIMED -> will be flushed */
3784                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3785                 flush_cnt = 1;
3786         } else {
3787                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3788                 if (queue->card->options.performance_stats)
3789                         queue->card->perf_stats.skbs_sent_pack++;
3790                 if (buf->next_element_to_fill >=
3791                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3792                         /*
3793                          * packed buffer if full -> set state PRIMED
3794                          * -> will be flushed
3795                          */
3796                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3797                         flush_cnt = 1;
3798                 }
3799         }
3800         return flush_cnt;
3801 }
3802
3803 int qeth_do_send_packet_fast(struct qeth_card *card,
3804                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3805                 struct qeth_hdr *hdr, int elements_needed,
3806                 int offset, int hd_len)
3807 {
3808         struct qeth_qdio_out_buffer *buffer;
3809         int index;
3810
3811         /* spin until we get the queue ... */
3812         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3813                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3814         /* ... now we've got the queue */
3815         index = queue->next_buf_to_fill;
3816         buffer = queue->bufs[queue->next_buf_to_fill];
3817         /*
3818          * check if buffer is empty to make sure that we do not 'overtake'
3819          * ourselves and try to fill a buffer that is already primed
3820          */
3821         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3822                 goto out;
3823         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3824                                           QDIO_MAX_BUFFERS_PER_Q;
3825         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3826         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3827         qeth_flush_buffers(queue, index, 1);
3828         return 0;
3829 out:
3830         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3831         return -EBUSY;
3832 }
3833 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3834
3835 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3836                 struct sk_buff *skb, struct qeth_hdr *hdr,
3837                 int elements_needed)
3838 {
3839         struct qeth_qdio_out_buffer *buffer;
3840         int start_index;
3841         int flush_count = 0;
3842         int do_pack = 0;
3843         int tmp;
3844         int rc = 0;
3845
3846         /* spin until we get the queue ... */
3847         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3848                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3849         start_index = queue->next_buf_to_fill;
3850         buffer = queue->bufs[queue->next_buf_to_fill];
3851         /*
3852          * check if buffer is empty to make sure that we do not 'overtake'
3853          * ourselves and try to fill a buffer that is already primed
3854          */
3855         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3856                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3857                 return -EBUSY;
3858         }
3859         /* check if we need to switch packing state of this queue */
3860         qeth_switch_to_packing_if_needed(queue);
3861         if (queue->do_pack) {
3862                 do_pack = 1;
3863                 /* does packet fit in current buffer? */
3864                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3865                     buffer->next_element_to_fill) < elements_needed) {
3866                         /* ... no -> set state PRIMED */
3867                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3868                         flush_count++;
3869                         queue->next_buf_to_fill =
3870                                 (queue->next_buf_to_fill + 1) %
3871                                 QDIO_MAX_BUFFERS_PER_Q;
3872                         buffer = queue->bufs[queue->next_buf_to_fill];
3873                         /* we did a step forward, so check buffer state
3874                          * again */
3875                         if (atomic_read(&buffer->state) !=
3876                             QETH_QDIO_BUF_EMPTY) {
3877                                 qeth_flush_buffers(queue, start_index,
3878                                                            flush_count);
3879                                 atomic_set(&queue->state,
3880                                                 QETH_OUT_Q_UNLOCKED);
3881                                 return -EBUSY;
3882                         }
3883                 }
3884         }
3885         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3886         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3887                                   QDIO_MAX_BUFFERS_PER_Q;
3888         flush_count += tmp;
3889         if (flush_count)
3890                 qeth_flush_buffers(queue, start_index, flush_count);
3891         else if (!atomic_read(&queue->set_pci_flags_count))
3892                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3893         /*
3894          * queue->state will go from LOCKED -> UNLOCKED or from
3895          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3896          * (switch packing state or flush buffer to get another pci flag out).
3897          * In that case we will enter this loop
3898          */
3899         while (atomic_dec_return(&queue->state)) {
3900                 flush_count = 0;
3901                 start_index = queue->next_buf_to_fill;
3902                 /* check if we can go back to non-packing state */
3903                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3904                 /*
3905                  * check if we need to flush a packing buffer to get a pci
3906                  * flag out on the queue
3907                  */
3908                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3909                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3910                 if (flush_count)
3911                         qeth_flush_buffers(queue, start_index, flush_count);
3912         }
3913         /* at this point the queue is UNLOCKED again */
3914         if (queue->card->options.performance_stats && do_pack)
3915                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3916
3917         return rc;
3918 }
3919 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3920
3921 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3922                 struct qeth_reply *reply, unsigned long data)
3923 {
3924         struct qeth_ipa_cmd *cmd;
3925         struct qeth_ipacmd_setadpparms *setparms;
3926
3927         QETH_CARD_TEXT(card, 4, "prmadpcb");
3928
3929         cmd = (struct qeth_ipa_cmd *) data;
3930         setparms = &(cmd->data.setadapterparms);
3931
3932         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3933         if (cmd->hdr.return_code) {
3934                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3935                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3936         }
3937         card->info.promisc_mode = setparms->data.mode;
3938         return 0;
3939 }
3940
3941 void qeth_setadp_promisc_mode(struct qeth_card *card)
3942 {
3943         enum qeth_ipa_promisc_modes mode;
3944         struct net_device *dev = card->dev;
3945         struct qeth_cmd_buffer *iob;
3946         struct qeth_ipa_cmd *cmd;
3947
3948         QETH_CARD_TEXT(card, 4, "setprom");
3949
3950         if (((dev->flags & IFF_PROMISC) &&
3951              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3952             (!(dev->flags & IFF_PROMISC) &&
3953              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3954                 return;
3955         mode = SET_PROMISC_MODE_OFF;
3956         if (dev->flags & IFF_PROMISC)
3957                 mode = SET_PROMISC_MODE_ON;
3958         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3959
3960         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3961                         sizeof(struct qeth_ipacmd_setadpparms));
3962         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3963         cmd->data.setadapterparms.data.mode = mode;
3964         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3965 }
3966 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3967
3968 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3969 {
3970         struct qeth_card *card;
3971         char dbf_text[15];
3972
3973         card = dev->ml_priv;
3974
3975         QETH_CARD_TEXT(card, 4, "chgmtu");
3976         sprintf(dbf_text, "%8x", new_mtu);
3977         QETH_CARD_TEXT(card, 4, dbf_text);
3978
3979         if (new_mtu < 64)
3980                 return -EINVAL;
3981         if (new_mtu > 65535)
3982                 return -EINVAL;
3983         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3984             (!qeth_mtu_is_valid(card, new_mtu)))
3985                 return -EINVAL;
3986         dev->mtu = new_mtu;
3987         return 0;
3988 }
3989 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3990
3991 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3992 {
3993         struct qeth_card *card;
3994
3995         card = dev->ml_priv;
3996
3997         QETH_CARD_TEXT(card, 5, "getstat");
3998
3999         return &card->stats;
4000 }
4001 EXPORT_SYMBOL_GPL(qeth_get_stats);
4002
4003 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4004                 struct qeth_reply *reply, unsigned long data)
4005 {
4006         struct qeth_ipa_cmd *cmd;
4007
4008         QETH_CARD_TEXT(card, 4, "chgmaccb");
4009
4010         cmd = (struct qeth_ipa_cmd *) data;
4011         if (!card->options.layer2 ||
4012             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4013                 memcpy(card->dev->dev_addr,
4014                        &cmd->data.setadapterparms.data.change_addr.addr,
4015                        OSA_ADDR_LEN);
4016                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4017         }
4018         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4019         return 0;
4020 }
4021
4022 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4023 {
4024         int rc;
4025         struct qeth_cmd_buffer *iob;
4026         struct qeth_ipa_cmd *cmd;
4027
4028         QETH_CARD_TEXT(card, 4, "chgmac");
4029
4030         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4031                                    sizeof(struct qeth_ipacmd_setadpparms));
4032         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4033         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4034         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4035         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4036                card->dev->dev_addr, OSA_ADDR_LEN);
4037         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4038                                NULL);
4039         return rc;
4040 }
4041 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4042
4043 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4044                 struct qeth_reply *reply, unsigned long data)
4045 {
4046         struct qeth_ipa_cmd *cmd;
4047         struct qeth_set_access_ctrl *access_ctrl_req;
4048
4049         QETH_CARD_TEXT(card, 4, "setaccb");
4050
4051         cmd = (struct qeth_ipa_cmd *) data;
4052         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4053         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4054         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4055         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4056                 cmd->data.setadapterparms.hdr.return_code);
4057         switch (cmd->data.setadapterparms.hdr.return_code) {
4058         case SET_ACCESS_CTRL_RC_SUCCESS:
4059         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4060         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4061         {
4062                 card->options.isolation = access_ctrl_req->subcmd_code;
4063                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4064                         dev_info(&card->gdev->dev,
4065                             "QDIO data connection isolation is deactivated\n");
4066                 } else {
4067                         dev_info(&card->gdev->dev,
4068                             "QDIO data connection isolation is activated\n");
4069                 }
4070                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
4071                         card->gdev->dev.kobj.name,
4072                         access_ctrl_req->subcmd_code,
4073                         cmd->data.setadapterparms.hdr.return_code);
4074                 break;
4075         }
4076         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4077         {
4078                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4079                         card->gdev->dev.kobj.name,
4080                         access_ctrl_req->subcmd_code,
4081                         cmd->data.setadapterparms.hdr.return_code);
4082                 dev_err(&card->gdev->dev, "Adapter does not "
4083                         "support QDIO data connection isolation\n");
4084
4085                 /* ensure isolation mode is "none" */
4086                 card->options.isolation = ISOLATION_MODE_NONE;
4087                 break;
4088         }
4089         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4090         {
4091                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4092                         card->gdev->dev.kobj.name,
4093                         access_ctrl_req->subcmd_code,
4094                         cmd->data.setadapterparms.hdr.return_code);
4095                 dev_err(&card->gdev->dev,
4096                         "Adapter is dedicated. "
4097                         "QDIO data connection isolation not supported\n");
4098
4099                 /* ensure isolation mode is "none" */
4100                 card->options.isolation = ISOLATION_MODE_NONE;
4101                 break;
4102         }
4103         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4104         {
4105                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4106                         card->gdev->dev.kobj.name,
4107                         access_ctrl_req->subcmd_code,
4108                         cmd->data.setadapterparms.hdr.return_code);
4109                 dev_err(&card->gdev->dev,
4110                         "TSO does not permit QDIO data connection isolation\n");
4111
4112                 /* ensure isolation mode is "none" */
4113                 card->options.isolation = ISOLATION_MODE_NONE;
4114                 break;
4115         }
4116         default:
4117         {
4118                 /* this should never happen */
4119                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
4120                         "==UNKNOWN\n",
4121                         card->gdev->dev.kobj.name,
4122                         access_ctrl_req->subcmd_code,
4123                         cmd->data.setadapterparms.hdr.return_code);
4124
4125                 /* ensure isolation mode is "none" */
4126                 card->options.isolation = ISOLATION_MODE_NONE;
4127                 break;
4128         }
4129         }
4130         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4131         return 0;
4132 }
4133
4134 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4135                 enum qeth_ipa_isolation_modes isolation)
4136 {
4137         int rc;
4138         struct qeth_cmd_buffer *iob;
4139         struct qeth_ipa_cmd *cmd;
4140         struct qeth_set_access_ctrl *access_ctrl_req;
4141
4142         QETH_CARD_TEXT(card, 4, "setacctl");
4143
4144         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4145         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4146
4147         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4148                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4149                                    sizeof(struct qeth_set_access_ctrl));
4150         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4151         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4152         access_ctrl_req->subcmd_code = isolation;
4153
4154         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4155                                NULL);
4156         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4157         return rc;
4158 }
4159
4160 int qeth_set_access_ctrl_online(struct qeth_card *card)
4161 {
4162         int rc = 0;
4163
4164         QETH_CARD_TEXT(card, 4, "setactlo");
4165
4166         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4167              card->info.type == QETH_CARD_TYPE_OSX) &&
4168              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4169                 rc = qeth_setadpparms_set_access_ctrl(card,
4170                         card->options.isolation);
4171                 if (rc) {
4172                         QETH_DBF_MESSAGE(3,
4173                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4174                                 card->gdev->dev.kobj.name,
4175                                 rc);
4176                 }
4177         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4178                 card->options.isolation = ISOLATION_MODE_NONE;
4179
4180                 dev_err(&card->gdev->dev, "Adapter does not "
4181                         "support QDIO data connection isolation\n");
4182                 rc = -EOPNOTSUPP;
4183         }
4184         return rc;
4185 }
4186 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4187
4188 void qeth_tx_timeout(struct net_device *dev)
4189 {
4190         struct qeth_card *card;
4191
4192         card = dev->ml_priv;
4193         QETH_CARD_TEXT(card, 4, "txtimeo");
4194         card->stats.tx_errors++;
4195         qeth_schedule_recovery(card);
4196 }
4197 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4198
4199 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4200 {
4201         struct qeth_card *card = dev->ml_priv;
4202         int rc = 0;
4203
4204         switch (regnum) {
4205         case MII_BMCR: /* Basic mode control register */
4206                 rc = BMCR_FULLDPLX;
4207                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4208                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4209                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4210                         rc |= BMCR_SPEED100;
4211                 break;
4212         case MII_BMSR: /* Basic mode status register */
4213                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4214                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4215                      BMSR_100BASE4;
4216                 break;
4217         case MII_PHYSID1: /* PHYS ID 1 */
4218                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4219                      dev->dev_addr[2];
4220                 rc = (rc >> 5) & 0xFFFF;
4221                 break;
4222         case MII_PHYSID2: /* PHYS ID 2 */
4223                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4224                 break;
4225         case MII_ADVERTISE: /* Advertisement control reg */
4226                 rc = ADVERTISE_ALL;
4227                 break;
4228         case MII_LPA: /* Link partner ability reg */
4229                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4230                      LPA_100BASE4 | LPA_LPACK;
4231                 break;
4232         case MII_EXPANSION: /* Expansion register */
4233                 break;
4234         case MII_DCOUNTER: /* disconnect counter */
4235                 break;
4236         case MII_FCSCOUNTER: /* false carrier counter */
4237                 break;
4238         case MII_NWAYTEST: /* N-way auto-neg test register */
4239                 break;
4240         case MII_RERRCOUNTER: /* rx error counter */
4241                 rc = card->stats.rx_errors;
4242                 break;
4243         case MII_SREVISION: /* silicon revision */
4244                 break;
4245         case MII_RESV1: /* reserved 1 */
4246                 break;
4247         case MII_LBRERROR: /* loopback, rx, bypass error */
4248                 break;
4249         case MII_PHYADDR: /* physical address */
4250                 break;
4251         case MII_RESV2: /* reserved 2 */
4252                 break;
4253         case MII_TPISTATUS: /* TPI status for 10mbps */
4254                 break;
4255         case MII_NCONFIG: /* network interface config */
4256                 break;
4257         default:
4258                 break;
4259         }
4260         return rc;
4261 }
4262 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4263
4264 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4265                 struct qeth_cmd_buffer *iob, int len,
4266                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4267                         unsigned long),
4268                 void *reply_param)
4269 {
4270         u16 s1, s2;
4271
4272         QETH_CARD_TEXT(card, 4, "sendsnmp");
4273
4274         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4275         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4276                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4277         /* adjust PDU length fields in IPA_PDU_HEADER */
4278         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4279         s2 = (u32) len;
4280         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4281         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4282         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4283         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4284         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4285                                       reply_cb, reply_param);
4286 }
4287
4288 static int qeth_snmp_command_cb(struct qeth_card *card,
4289                 struct qeth_reply *reply, unsigned long sdata)
4290 {
4291         struct qeth_ipa_cmd *cmd;
4292         struct qeth_arp_query_info *qinfo;
4293         struct qeth_snmp_cmd *snmp;
4294         unsigned char *data;
4295         __u16 data_len;
4296
4297         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4298
4299         cmd = (struct qeth_ipa_cmd *) sdata;
4300         data = (unsigned char *)((char *)cmd - reply->offset);
4301         qinfo = (struct qeth_arp_query_info *) reply->param;
4302         snmp = &cmd->data.setadapterparms.data.snmp;
4303
4304         if (cmd->hdr.return_code) {
4305                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4306                 return 0;
4307         }
4308         if (cmd->data.setadapterparms.hdr.return_code) {
4309                 cmd->hdr.return_code =
4310                         cmd->data.setadapterparms.hdr.return_code;
4311                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4312                 return 0;
4313         }
4314         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4315         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4316                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4317         else
4318                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4319
4320         /* check if there is enough room in userspace */
4321         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4322                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4323                 cmd->hdr.return_code = -ENOMEM;
4324                 return 0;
4325         }
4326         QETH_CARD_TEXT_(card, 4, "snore%i",
4327                        cmd->data.setadapterparms.hdr.used_total);
4328         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4329                 cmd->data.setadapterparms.hdr.seq_no);
4330         /*copy entries to user buffer*/
4331         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4332                 memcpy(qinfo->udata + qinfo->udata_offset,
4333                        (char *)snmp,
4334                        data_len + offsetof(struct qeth_snmp_cmd, data));
4335                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4336         } else {
4337                 memcpy(qinfo->udata + qinfo->udata_offset,
4338                        (char *)&snmp->request, data_len);
4339         }
4340         qinfo->udata_offset += data_len;
4341         /* check if all replies received ... */
4342                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4343                                cmd->data.setadapterparms.hdr.used_total);
4344                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4345                                cmd->data.setadapterparms.hdr.seq_no);
4346         if (cmd->data.setadapterparms.hdr.seq_no <
4347             cmd->data.setadapterparms.hdr.used_total)
4348                 return 1;
4349         return 0;
4350 }
4351
4352 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4353 {
4354         struct qeth_cmd_buffer *iob;
4355         struct qeth_ipa_cmd *cmd;
4356         struct qeth_snmp_ureq *ureq;
4357         int req_len;
4358         struct qeth_arp_query_info qinfo = {0, };
4359         int rc = 0;
4360
4361         QETH_CARD_TEXT(card, 3, "snmpcmd");
4362
4363         if (card->info.guestlan)
4364                 return -EOPNOTSUPP;
4365
4366         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4367             (!card->options.layer2)) {
4368                 return -EOPNOTSUPP;
4369         }
4370         /* skip 4 bytes (data_len struct member) to get req_len */
4371         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4372                 return -EFAULT;
4373         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4374         if (IS_ERR(ureq)) {
4375                 QETH_CARD_TEXT(card, 2, "snmpnome");
4376                 return PTR_ERR(ureq);
4377         }
4378         qinfo.udata_len = ureq->hdr.data_len;
4379         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4380         if (!qinfo.udata) {
4381                 kfree(ureq);
4382                 return -ENOMEM;
4383         }
4384         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4385
4386         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4387                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4388         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4389         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4390         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4391                                     qeth_snmp_command_cb, (void *)&qinfo);
4392         if (rc)
4393                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4394                            QETH_CARD_IFNAME(card), rc);
4395         else {
4396                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4397                         rc = -EFAULT;
4398         }
4399
4400         kfree(ureq);
4401         kfree(qinfo.udata);
4402         return rc;
4403 }
4404 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4405
4406 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4407                 struct qeth_reply *reply, unsigned long data)
4408 {
4409         struct qeth_ipa_cmd *cmd;
4410         struct qeth_qoat_priv *priv;
4411         char *resdata;
4412         int resdatalen;
4413
4414         QETH_CARD_TEXT(card, 3, "qoatcb");
4415
4416         cmd = (struct qeth_ipa_cmd *)data;
4417         priv = (struct qeth_qoat_priv *)reply->param;
4418         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4419         resdata = (char *)data + 28;
4420
4421         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4422                 cmd->hdr.return_code = IPA_RC_FFFF;
4423                 return 0;
4424         }
4425
4426         memcpy((priv->buffer + priv->response_len), resdata,
4427                 resdatalen);
4428         priv->response_len += resdatalen;
4429
4430         if (cmd->data.setadapterparms.hdr.seq_no <
4431             cmd->data.setadapterparms.hdr.used_total)
4432                 return 1;
4433         return 0;
4434 }
4435
4436 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4437 {
4438         int rc = 0;
4439         struct qeth_cmd_buffer *iob;
4440         struct qeth_ipa_cmd *cmd;
4441         struct qeth_query_oat *oat_req;
4442         struct qeth_query_oat_data oat_data;
4443         struct qeth_qoat_priv priv;
4444         void __user *tmp;
4445
4446         QETH_CARD_TEXT(card, 3, "qoatcmd");
4447
4448         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4449                 rc = -EOPNOTSUPP;
4450                 goto out;
4451         }
4452
4453         if (copy_from_user(&oat_data, udata,
4454             sizeof(struct qeth_query_oat_data))) {
4455                         rc = -EFAULT;
4456                         goto out;
4457         }
4458
4459         priv.buffer_len = oat_data.buffer_len;
4460         priv.response_len = 0;
4461         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4462         if (!priv.buffer) {
4463                 rc = -ENOMEM;
4464                 goto out;
4465         }
4466
4467         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4468                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4469                                    sizeof(struct qeth_query_oat));
4470         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4471         oat_req = &cmd->data.setadapterparms.data.query_oat;
4472         oat_req->subcmd_code = oat_data.command;
4473
4474         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4475                                &priv);
4476         if (!rc) {
4477                 if (is_compat_task())
4478                         tmp = compat_ptr(oat_data.ptr);
4479                 else
4480                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4481
4482                 if (copy_to_user(tmp, priv.buffer,
4483                     priv.response_len)) {
4484                         rc = -EFAULT;
4485                         goto out_free;
4486                 }
4487
4488                 oat_data.response_len = priv.response_len;
4489
4490                 if (copy_to_user(udata, &oat_data,
4491                     sizeof(struct qeth_query_oat_data)))
4492                         rc = -EFAULT;
4493         } else
4494                 if (rc == IPA_RC_FFFF)
4495                         rc = -EFAULT;
4496
4497 out_free:
4498         kfree(priv.buffer);
4499 out:
4500         return rc;
4501 }
4502 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4503
4504 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4505 {
4506         switch (card->info.type) {
4507         case QETH_CARD_TYPE_IQD:
4508                 return 2;
4509         default:
4510                 return 0;
4511         }
4512 }
4513
4514 static void qeth_determine_capabilities(struct qeth_card *card)
4515 {
4516         int rc;
4517         int length;
4518         char *prcd;
4519         struct ccw_device *ddev;
4520         int ddev_offline = 0;
4521
4522         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4523         ddev = CARD_DDEV(card);
4524         if (!ddev->online) {
4525                 ddev_offline = 1;
4526                 rc = ccw_device_set_online(ddev);
4527                 if (rc) {
4528                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4529                         goto out;
4530                 }
4531         }
4532
4533         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4534         if (rc) {
4535                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4536                         dev_name(&card->gdev->dev), rc);
4537                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4538                 goto out_offline;
4539         }
4540         qeth_configure_unitaddr(card, prcd);
4541         qeth_configure_blkt_default(card, prcd);
4542         kfree(prcd);
4543
4544         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4545         if (rc)
4546                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4547
4548         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4549         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4550         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4551         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4552         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4553             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4554             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4555                 dev_info(&card->gdev->dev,
4556                         "Completion Queueing supported\n");
4557         } else {
4558                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4559         }
4560
4561
4562 out_offline:
4563         if (ddev_offline == 1)
4564                 ccw_device_set_offline(ddev);
4565 out:
4566         return;
4567 }
4568
4569 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4570         struct qdio_buffer **in_sbal_ptrs,
4571         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4572         int i;
4573
4574         if (card->options.cq == QETH_CQ_ENABLED) {
4575                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4576                              (card->qdio.no_in_queues - 1);
4577                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4578                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4579                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4580                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4581                 }
4582
4583                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4584         }
4585 }
4586
4587 static int qeth_qdio_establish(struct qeth_card *card)
4588 {
4589         struct qdio_initialize init_data;
4590         char *qib_param_field;
4591         struct qdio_buffer **in_sbal_ptrs;
4592         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4593         struct qdio_buffer **out_sbal_ptrs;
4594         int i, j, k;
4595         int rc = 0;
4596
4597         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4598
4599         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4600                               GFP_KERNEL);
4601         if (!qib_param_field) {
4602                 rc =  -ENOMEM;
4603                 goto out_free_nothing;
4604         }
4605
4606         qeth_create_qib_param_field(card, qib_param_field);
4607         qeth_create_qib_param_field_blkt(card, qib_param_field);
4608
4609         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4610                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4611                                GFP_KERNEL);
4612         if (!in_sbal_ptrs) {
4613                 rc = -ENOMEM;
4614                 goto out_free_qib_param;
4615         }
4616         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4617                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4618                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4619         }
4620
4621         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4622                                    GFP_KERNEL);
4623         if (!queue_start_poll) {
4624                 rc = -ENOMEM;
4625                 goto out_free_in_sbals;
4626         }
4627         for (i = 0; i < card->qdio.no_in_queues; ++i)
4628                 queue_start_poll[i] = card->discipline.start_poll;
4629
4630         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4631
4632         out_sbal_ptrs =
4633                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4634                         sizeof(void *), GFP_KERNEL);
4635         if (!out_sbal_ptrs) {
4636                 rc = -ENOMEM;
4637                 goto out_free_queue_start_poll;
4638         }
4639         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4640                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4641                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4642                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4643                 }
4644
4645         memset(&init_data, 0, sizeof(struct qdio_initialize));
4646         init_data.cdev                   = CARD_DDEV(card);
4647         init_data.q_format               = qeth_get_qdio_q_format(card);
4648         init_data.qib_param_field_format = 0;
4649         init_data.qib_param_field        = qib_param_field;
4650         init_data.no_input_qs            = card->qdio.no_in_queues;
4651         init_data.no_output_qs           = card->qdio.no_out_queues;
4652         init_data.input_handler          = card->discipline.input_handler;
4653         init_data.output_handler         = card->discipline.output_handler;
4654         init_data.queue_start_poll_array = queue_start_poll;
4655         init_data.int_parm               = (unsigned long) card;
4656         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4657         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4658         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4659         init_data.scan_threshold =
4660                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4661
4662         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4663                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4664                 rc = qdio_allocate(&init_data);
4665                 if (rc) {
4666                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4667                         goto out;
4668                 }
4669                 rc = qdio_establish(&init_data);
4670                 if (rc) {
4671                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4672                         qdio_free(CARD_DDEV(card));
4673                 }
4674         }
4675
4676         switch (card->options.cq) {
4677         case QETH_CQ_ENABLED:
4678                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4679                 break;
4680         case QETH_CQ_DISABLED:
4681                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4682                 break;
4683         default:
4684                 break;
4685         }
4686 out:
4687         kfree(out_sbal_ptrs);
4688 out_free_queue_start_poll:
4689         kfree(queue_start_poll);
4690 out_free_in_sbals:
4691         kfree(in_sbal_ptrs);
4692 out_free_qib_param:
4693         kfree(qib_param_field);
4694 out_free_nothing:
4695         return rc;
4696 }
4697
4698 static void qeth_core_free_card(struct qeth_card *card)
4699 {
4700
4701         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4702         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4703         qeth_clean_channel(&card->read);
4704         qeth_clean_channel(&card->write);
4705         if (card->dev)
4706                 free_netdev(card->dev);
4707         kfree(card->ip_tbd_list);
4708         qeth_free_qdio_buffers(card);
4709         unregister_service_level(&card->qeth_service_level);
4710         kfree(card);
4711 }
4712
4713 static struct ccw_device_id qeth_ids[] = {
4714         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4715                                         .driver_info = QETH_CARD_TYPE_OSD},
4716         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4717                                         .driver_info = QETH_CARD_TYPE_IQD},
4718         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4719                                         .driver_info = QETH_CARD_TYPE_OSN},
4720         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4721                                         .driver_info = QETH_CARD_TYPE_OSM},
4722         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4723                                         .driver_info = QETH_CARD_TYPE_OSX},
4724         {},
4725 };
4726 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4727
4728 static struct ccw_driver qeth_ccw_driver = {
4729         .driver = {
4730                 .owner = THIS_MODULE,
4731                 .name = "qeth",
4732         },
4733         .ids = qeth_ids,
4734         .probe = ccwgroup_probe_ccwdev,
4735         .remove = ccwgroup_remove_ccwdev,
4736 };
4737
4738 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4739                                 unsigned long driver_id)
4740 {
4741         return ccwgroup_create_from_string(root_dev, driver_id,
4742                                            &qeth_ccw_driver, 3, buf);
4743 }
4744
4745 int qeth_core_hardsetup_card(struct qeth_card *card)
4746 {
4747         int retries = 0;
4748         int rc;
4749
4750         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4751         atomic_set(&card->force_alloc_skb, 0);
4752         qeth_get_channel_path_desc(card);
4753 retry:
4754         if (retries)
4755                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4756                         dev_name(&card->gdev->dev));
4757         ccw_device_set_offline(CARD_DDEV(card));
4758         ccw_device_set_offline(CARD_WDEV(card));
4759         ccw_device_set_offline(CARD_RDEV(card));
4760         rc = ccw_device_set_online(CARD_RDEV(card));
4761         if (rc)
4762                 goto retriable;
4763         rc = ccw_device_set_online(CARD_WDEV(card));
4764         if (rc)
4765                 goto retriable;
4766         rc = ccw_device_set_online(CARD_DDEV(card));
4767         if (rc)
4768                 goto retriable;
4769         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4770 retriable:
4771         if (rc == -ERESTARTSYS) {
4772                 QETH_DBF_TEXT(SETUP, 2, "break1");
4773                 return rc;
4774         } else if (rc) {
4775                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4776                 if (++retries > 3)
4777                         goto out;
4778                 else
4779                         goto retry;
4780         }
4781         qeth_determine_capabilities(card);
4782         qeth_init_tokens(card);
4783         qeth_init_func_level(card);
4784         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4785         if (rc == -ERESTARTSYS) {
4786                 QETH_DBF_TEXT(SETUP, 2, "break2");
4787                 return rc;
4788         } else if (rc) {
4789                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4790                 if (--retries < 0)
4791                         goto out;
4792                 else
4793                         goto retry;
4794         }
4795         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4796         if (rc == -ERESTARTSYS) {
4797                 QETH_DBF_TEXT(SETUP, 2, "break3");
4798                 return rc;
4799         } else if (rc) {
4800                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4801                 if (--retries < 0)
4802                         goto out;
4803                 else
4804                         goto retry;
4805         }
4806         card->read_or_write_problem = 0;
4807         rc = qeth_mpc_initialize(card);
4808         if (rc) {
4809                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4810                 goto out;
4811         }
4812
4813         card->options.ipa4.supported_funcs = 0;
4814         card->options.adp.supported_funcs = 0;
4815         card->info.diagass_support = 0;
4816         qeth_query_ipassists(card, QETH_PROT_IPV4);
4817         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4818                 qeth_query_setadapterparms(card);
4819         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4820                 qeth_query_setdiagass(card);
4821         return 0;
4822 out:
4823         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4824                 "an error on the device\n");
4825         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4826                 dev_name(&card->gdev->dev), rc);
4827         return rc;
4828 }
4829 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4830
4831 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4832                 struct qdio_buffer_element *element,
4833                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4834 {
4835         struct page *page = virt_to_page(element->addr);
4836         if (*pskb == NULL) {
4837                 if (qethbuffer->rx_skb) {
4838                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4839                         *pskb = qethbuffer->rx_skb;
4840                         qethbuffer->rx_skb = NULL;
4841                 } else {
4842                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4843                         if (!(*pskb))
4844                                 return -ENOMEM;
4845                 }
4846
4847                 skb_reserve(*pskb, ETH_HLEN);
4848                 if (data_len <= QETH_RX_PULL_LEN) {
4849                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4850                                 data_len);
4851                 } else {
4852                         get_page(page);
4853                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4854                                element->addr + offset, QETH_RX_PULL_LEN);
4855                         skb_fill_page_desc(*pskb, *pfrag, page,
4856                                 offset + QETH_RX_PULL_LEN,
4857                                 data_len - QETH_RX_PULL_LEN);
4858                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4859                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4860                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4861                         (*pfrag)++;
4862                 }
4863         } else {
4864                 get_page(page);
4865                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4866                 (*pskb)->data_len += data_len;
4867                 (*pskb)->len      += data_len;
4868                 (*pskb)->truesize += data_len;
4869                 (*pfrag)++;
4870         }
4871
4872
4873         return 0;
4874 }
4875
4876 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4877                 struct qeth_qdio_buffer *qethbuffer,
4878                 struct qdio_buffer_element **__element, int *__offset,
4879                 struct qeth_hdr **hdr)
4880 {
4881         struct qdio_buffer_element *element = *__element;
4882         struct qdio_buffer *buffer = qethbuffer->buffer;
4883         int offset = *__offset;
4884         struct sk_buff *skb = NULL;
4885         int skb_len = 0;
4886         void *data_ptr;
4887         int data_len;
4888         int headroom = 0;
4889         int use_rx_sg = 0;
4890         int frag = 0;
4891
4892         /* qeth_hdr must not cross element boundaries */
4893         if (element->length < offset + sizeof(struct qeth_hdr)) {
4894                 if (qeth_is_last_sbale(element))
4895                         return NULL;
4896                 element++;
4897                 offset = 0;
4898                 if (element->length < sizeof(struct qeth_hdr))
4899                         return NULL;
4900         }
4901         *hdr = element->addr + offset;
4902
4903         offset += sizeof(struct qeth_hdr);
4904         switch ((*hdr)->hdr.l2.id) {
4905         case QETH_HEADER_TYPE_LAYER2:
4906                 skb_len = (*hdr)->hdr.l2.pkt_length;
4907                 break;
4908         case QETH_HEADER_TYPE_LAYER3:
4909                 skb_len = (*hdr)->hdr.l3.length;
4910                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4911                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4912                         headroom = TR_HLEN;
4913                 else
4914                         headroom = ETH_HLEN;
4915                 break;
4916         case QETH_HEADER_TYPE_OSN:
4917                 skb_len = (*hdr)->hdr.osn.pdu_length;
4918                 headroom = sizeof(struct qeth_hdr);
4919                 break;
4920         default:
4921                 break;
4922         }
4923
4924         if (!skb_len)
4925                 return NULL;
4926
4927         if (((skb_len >= card->options.rx_sg_cb) &&
4928              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4929              (!atomic_read(&card->force_alloc_skb))) ||
4930             (card->options.cq == QETH_CQ_ENABLED)) {
4931                 use_rx_sg = 1;
4932         } else {
4933                 skb = dev_alloc_skb(skb_len + headroom);
4934                 if (!skb)
4935                         goto no_mem;
4936                 if (headroom)
4937                         skb_reserve(skb, headroom);
4938         }
4939
4940         data_ptr = element->addr + offset;
4941         while (skb_len) {
4942                 data_len = min(skb_len, (int)(element->length - offset));
4943                 if (data_len) {
4944                         if (use_rx_sg) {
4945                                 if (qeth_create_skb_frag(qethbuffer, element,
4946                                     &skb, offset, &frag, data_len))
4947                                         goto no_mem;
4948                         } else {
4949                                 memcpy(skb_put(skb, data_len), data_ptr,
4950                                         data_len);
4951                         }
4952                 }
4953                 skb_len -= data_len;
4954                 if (skb_len) {
4955                         if (qeth_is_last_sbale(element)) {
4956                                 QETH_CARD_TEXT(card, 4, "unexeob");
4957                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4958                                 dev_kfree_skb_any(skb);
4959                                 card->stats.rx_errors++;
4960                                 return NULL;
4961                         }
4962                         element++;
4963                         offset = 0;
4964                         data_ptr = element->addr;
4965                 } else {
4966                         offset += data_len;
4967                 }
4968         }
4969         *__element = element;
4970         *__offset = offset;
4971         if (use_rx_sg && card->options.performance_stats) {
4972                 card->perf_stats.sg_skbs_rx++;
4973                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4974         }
4975         return skb;
4976 no_mem:
4977         if (net_ratelimit()) {
4978                 QETH_CARD_TEXT(card, 2, "noskbmem");
4979         }
4980         card->stats.rx_dropped++;
4981         return NULL;
4982 }
4983 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4984
4985 static void qeth_unregister_dbf_views(void)
4986 {
4987         int x;
4988         for (x = 0; x < QETH_DBF_INFOS; x++) {
4989                 debug_unregister(qeth_dbf[x].id);
4990                 qeth_dbf[x].id = NULL;
4991         }
4992 }
4993
4994 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4995 {
4996         char dbf_txt_buf[32];
4997         va_list args;
4998
4999         if (level > id->level)
5000                 return;
5001         va_start(args, fmt);
5002         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5003         va_end(args);
5004         debug_text_event(id, level, dbf_txt_buf);
5005 }
5006 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5007
5008 static int qeth_register_dbf_views(void)
5009 {
5010         int ret;
5011         int x;
5012
5013         for (x = 0; x < QETH_DBF_INFOS; x++) {
5014                 /* register the areas */
5015                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5016                                                 qeth_dbf[x].pages,
5017                                                 qeth_dbf[x].areas,
5018                                                 qeth_dbf[x].len);
5019                 if (qeth_dbf[x].id == NULL) {
5020                         qeth_unregister_dbf_views();
5021                         return -ENOMEM;
5022                 }
5023
5024                 /* register a view */
5025                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5026                 if (ret) {
5027                         qeth_unregister_dbf_views();
5028                         return ret;
5029                 }
5030
5031                 /* set a passing level */
5032                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5033         }
5034
5035         return 0;
5036 }
5037
5038 int qeth_core_load_discipline(struct qeth_card *card,
5039                 enum qeth_discipline_id discipline)
5040 {
5041         int rc = 0;
5042         switch (discipline) {
5043         case QETH_DISCIPLINE_LAYER3:
5044                 card->discipline.ccwgdriver = try_then_request_module(
5045                         symbol_get(qeth_l3_ccwgroup_driver),
5046                         "qeth_l3");
5047                 break;
5048         case QETH_DISCIPLINE_LAYER2:
5049                 card->discipline.ccwgdriver = try_then_request_module(
5050                         symbol_get(qeth_l2_ccwgroup_driver),
5051                         "qeth_l2");
5052                 break;
5053         }
5054         if (!card->discipline.ccwgdriver) {
5055                 dev_err(&card->gdev->dev, "There is no kernel module to "
5056                         "support discipline %d\n", discipline);
5057                 rc = -EINVAL;
5058         }
5059         return rc;
5060 }
5061
5062 void qeth_core_free_discipline(struct qeth_card *card)
5063 {
5064         if (card->options.layer2)
5065                 symbol_put(qeth_l2_ccwgroup_driver);
5066         else
5067                 symbol_put(qeth_l3_ccwgroup_driver);
5068         card->discipline.ccwgdriver = NULL;
5069 }
5070
5071 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5072 {
5073         struct qeth_card *card;
5074         struct device *dev;
5075         int rc;
5076         unsigned long flags;
5077         char dbf_name[20];
5078
5079         QETH_DBF_TEXT(SETUP, 2, "probedev");
5080
5081         dev = &gdev->dev;
5082         if (!get_device(dev))
5083                 return -ENODEV;
5084
5085         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5086
5087         card = qeth_alloc_card();
5088         if (!card) {
5089                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5090                 rc = -ENOMEM;
5091                 goto err_dev;
5092         }
5093
5094         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5095                 dev_name(&gdev->dev));
5096         card->debug = debug_register(dbf_name, 2, 1, 8);
5097         if (!card->debug) {
5098                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5099                 rc = -ENOMEM;
5100                 goto err_card;
5101         }
5102         debug_register_view(card->debug, &debug_hex_ascii_view);
5103
5104         card->read.ccwdev  = gdev->cdev[0];
5105         card->write.ccwdev = gdev->cdev[1];
5106         card->data.ccwdev  = gdev->cdev[2];
5107         dev_set_drvdata(&gdev->dev, card);
5108         card->gdev = gdev;
5109         gdev->cdev[0]->handler = qeth_irq;
5110         gdev->cdev[1]->handler = qeth_irq;
5111         gdev->cdev[2]->handler = qeth_irq;
5112
5113         rc = qeth_determine_card_type(card);
5114         if (rc) {
5115                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5116                 goto err_dbf;
5117         }
5118         rc = qeth_setup_card(card);
5119         if (rc) {
5120                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5121                 goto err_dbf;
5122         }
5123
5124         if (card->info.type == QETH_CARD_TYPE_OSN)
5125                 rc = qeth_core_create_osn_attributes(dev);
5126         else
5127                 rc = qeth_core_create_device_attributes(dev);
5128         if (rc)
5129                 goto err_dbf;
5130         switch (card->info.type) {
5131         case QETH_CARD_TYPE_OSN:
5132         case QETH_CARD_TYPE_OSM:
5133                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5134                 if (rc)
5135                         goto err_attr;
5136                 rc = card->discipline.ccwgdriver->probe(card->gdev);
5137                 if (rc)
5138                         goto err_disc;
5139         case QETH_CARD_TYPE_OSD:
5140         case QETH_CARD_TYPE_OSX:
5141         default:
5142                 break;
5143         }
5144
5145         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5146         list_add_tail(&card->list, &qeth_core_card_list.list);
5147         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5148
5149         qeth_determine_capabilities(card);
5150         return 0;
5151
5152 err_disc:
5153         qeth_core_free_discipline(card);
5154 err_attr:
5155         if (card->info.type == QETH_CARD_TYPE_OSN)
5156                 qeth_core_remove_osn_attributes(dev);
5157         else
5158                 qeth_core_remove_device_attributes(dev);
5159 err_dbf:
5160         debug_unregister(card->debug);
5161 err_card:
5162         qeth_core_free_card(card);
5163 err_dev:
5164         put_device(dev);
5165         return rc;
5166 }
5167
5168 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5169 {
5170         unsigned long flags;
5171         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5172
5173         QETH_DBF_TEXT(SETUP, 2, "removedv");
5174
5175         if (card->info.type == QETH_CARD_TYPE_OSN) {
5176                 qeth_core_remove_osn_attributes(&gdev->dev);
5177         } else {
5178                 qeth_core_remove_device_attributes(&gdev->dev);
5179         }
5180
5181         if (card->discipline.ccwgdriver) {
5182                 card->discipline.ccwgdriver->remove(gdev);
5183                 qeth_core_free_discipline(card);
5184         }
5185
5186         debug_unregister(card->debug);
5187         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5188         list_del(&card->list);
5189         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5190         qeth_core_free_card(card);
5191         dev_set_drvdata(&gdev->dev, NULL);
5192         put_device(&gdev->dev);
5193         return;
5194 }
5195
5196 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5197 {
5198         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5199         int rc = 0;
5200         int def_discipline;
5201
5202         if (!card->discipline.ccwgdriver) {
5203                 if (card->info.type == QETH_CARD_TYPE_IQD)
5204                         def_discipline = QETH_DISCIPLINE_LAYER3;
5205                 else
5206                         def_discipline = QETH_DISCIPLINE_LAYER2;
5207                 rc = qeth_core_load_discipline(card, def_discipline);
5208                 if (rc)
5209                         goto err;
5210                 rc = card->discipline.ccwgdriver->probe(card->gdev);
5211                 if (rc)
5212                         goto err;
5213         }
5214         rc = card->discipline.ccwgdriver->set_online(gdev);
5215 err:
5216         return rc;
5217 }
5218
5219 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5220 {
5221         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5222         return card->discipline.ccwgdriver->set_offline(gdev);
5223 }
5224
5225 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5226 {
5227         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5228         if (card->discipline.ccwgdriver &&
5229             card->discipline.ccwgdriver->shutdown)
5230                 card->discipline.ccwgdriver->shutdown(gdev);
5231 }
5232
5233 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5234 {
5235         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5236         if (card->discipline.ccwgdriver &&
5237             card->discipline.ccwgdriver->prepare)
5238                 return card->discipline.ccwgdriver->prepare(gdev);
5239         return 0;
5240 }
5241
5242 static void qeth_core_complete(struct ccwgroup_device *gdev)
5243 {
5244         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5245         if (card->discipline.ccwgdriver &&
5246             card->discipline.ccwgdriver->complete)
5247                 card->discipline.ccwgdriver->complete(gdev);
5248 }
5249
5250 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5251 {
5252         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5253         if (card->discipline.ccwgdriver &&
5254             card->discipline.ccwgdriver->freeze)
5255                 return card->discipline.ccwgdriver->freeze(gdev);
5256         return 0;
5257 }
5258
5259 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5260 {
5261         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5262         if (card->discipline.ccwgdriver &&
5263             card->discipline.ccwgdriver->thaw)
5264                 return card->discipline.ccwgdriver->thaw(gdev);
5265         return 0;
5266 }
5267
5268 static int qeth_core_restore(struct ccwgroup_device *gdev)
5269 {
5270         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5271         if (card->discipline.ccwgdriver &&
5272             card->discipline.ccwgdriver->restore)
5273                 return card->discipline.ccwgdriver->restore(gdev);
5274         return 0;
5275 }
5276
5277 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5278         .driver = {
5279                 .owner = THIS_MODULE,
5280                 .name = "qeth",
5281         },
5282         .driver_id = 0xD8C5E3C8,
5283         .probe = qeth_core_probe_device,
5284         .remove = qeth_core_remove_device,
5285         .set_online = qeth_core_set_online,
5286         .set_offline = qeth_core_set_offline,
5287         .shutdown = qeth_core_shutdown,
5288         .prepare = qeth_core_prepare,
5289         .complete = qeth_core_complete,
5290         .freeze = qeth_core_freeze,
5291         .thaw = qeth_core_thaw,
5292         .restore = qeth_core_restore,
5293 };
5294
5295 static ssize_t
5296 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
5297                            size_t count)
5298 {
5299         int err;
5300         err = qeth_core_driver_group(buf, qeth_core_root_dev,
5301                                         qeth_core_ccwgroup_driver.driver_id);
5302         if (err)
5303                 return err;
5304         else
5305                 return count;
5306 }
5307
5308 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5309
5310 static struct {
5311         const char str[ETH_GSTRING_LEN];
5312 } qeth_ethtool_stats_keys[] = {
5313 /*  0 */{"rx skbs"},
5314         {"rx buffers"},
5315         {"tx skbs"},
5316         {"tx buffers"},
5317         {"tx skbs no packing"},
5318         {"tx buffers no packing"},
5319         {"tx skbs packing"},
5320         {"tx buffers packing"},
5321         {"tx sg skbs"},
5322         {"tx sg frags"},
5323 /* 10 */{"rx sg skbs"},
5324         {"rx sg frags"},
5325         {"rx sg page allocs"},
5326         {"tx large kbytes"},
5327         {"tx large count"},
5328         {"tx pk state ch n->p"},
5329         {"tx pk state ch p->n"},
5330         {"tx pk watermark low"},
5331         {"tx pk watermark high"},
5332         {"queue 0 buffer usage"},
5333 /* 20 */{"queue 1 buffer usage"},
5334         {"queue 2 buffer usage"},
5335         {"queue 3 buffer usage"},
5336         {"rx poll time"},
5337         {"rx poll count"},
5338         {"rx do_QDIO time"},
5339         {"rx do_QDIO count"},
5340         {"tx handler time"},
5341         {"tx handler count"},
5342         {"tx time"},
5343 /* 30 */{"tx count"},
5344         {"tx do_QDIO time"},
5345         {"tx do_QDIO count"},
5346         {"tx csum"},
5347         {"tx lin"},
5348         {"cq handler count"},
5349         {"cq handler time"}
5350 };
5351
5352 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5353 {
5354         switch (stringset) {
5355         case ETH_SS_STATS:
5356                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5357         default:
5358                 return -EINVAL;
5359         }
5360 }
5361 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5362
5363 void qeth_core_get_ethtool_stats(struct net_device *dev,
5364                 struct ethtool_stats *stats, u64 *data)
5365 {
5366         struct qeth_card *card = dev->ml_priv;
5367         data[0] = card->stats.rx_packets -
5368                                 card->perf_stats.initial_rx_packets;
5369         data[1] = card->perf_stats.bufs_rec;
5370         data[2] = card->stats.tx_packets -
5371                                 card->perf_stats.initial_tx_packets;
5372         data[3] = card->perf_stats.bufs_sent;
5373         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5374                         - card->perf_stats.skbs_sent_pack;
5375         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5376         data[6] = card->perf_stats.skbs_sent_pack;
5377         data[7] = card->perf_stats.bufs_sent_pack;
5378         data[8] = card->perf_stats.sg_skbs_sent;
5379         data[9] = card->perf_stats.sg_frags_sent;
5380         data[10] = card->perf_stats.sg_skbs_rx;
5381         data[11] = card->perf_stats.sg_frags_rx;
5382         data[12] = card->perf_stats.sg_alloc_page_rx;
5383         data[13] = (card->perf_stats.large_send_bytes >> 10);
5384         data[14] = card->perf_stats.large_send_cnt;
5385         data[15] = card->perf_stats.sc_dp_p;
5386         data[16] = card->perf_stats.sc_p_dp;
5387         data[17] = QETH_LOW_WATERMARK_PACK;
5388         data[18] = QETH_HIGH_WATERMARK_PACK;
5389         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5390         data[20] = (card->qdio.no_out_queues > 1) ?
5391                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5392         data[21] = (card->qdio.no_out_queues > 2) ?
5393                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5394         data[22] = (card->qdio.no_out_queues > 3) ?
5395                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5396         data[23] = card->perf_stats.inbound_time;
5397         data[24] = card->perf_stats.inbound_cnt;
5398         data[25] = card->perf_stats.inbound_do_qdio_time;
5399         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5400         data[27] = card->perf_stats.outbound_handler_time;
5401         data[28] = card->perf_stats.outbound_handler_cnt;
5402         data[29] = card->perf_stats.outbound_time;
5403         data[30] = card->perf_stats.outbound_cnt;
5404         data[31] = card->perf_stats.outbound_do_qdio_time;
5405         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5406         data[33] = card->perf_stats.tx_csum;
5407         data[34] = card->perf_stats.tx_lin;
5408         data[35] = card->perf_stats.cq_cnt;
5409         data[36] = card->perf_stats.cq_time;
5410 }
5411 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5412
5413 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5414 {
5415         switch (stringset) {
5416         case ETH_SS_STATS:
5417                 memcpy(data, &qeth_ethtool_stats_keys,
5418                         sizeof(qeth_ethtool_stats_keys));
5419                 break;
5420         default:
5421                 WARN_ON(1);
5422                 break;
5423         }
5424 }
5425 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5426
5427 void qeth_core_get_drvinfo(struct net_device *dev,
5428                 struct ethtool_drvinfo *info)
5429 {
5430         struct qeth_card *card = dev->ml_priv;
5431         if (card->options.layer2)
5432                 strcpy(info->driver, "qeth_l2");
5433         else
5434                 strcpy(info->driver, "qeth_l3");
5435
5436         strcpy(info->version, "1.0");
5437         strcpy(info->fw_version, card->info.mcl_level);
5438         sprintf(info->bus_info, "%s/%s/%s",
5439                         CARD_RDEV_ID(card),
5440                         CARD_WDEV_ID(card),
5441                         CARD_DDEV_ID(card));
5442 }
5443 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5444
5445 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5446                                         struct ethtool_cmd *ecmd)
5447 {
5448         struct qeth_card *card = netdev->ml_priv;
5449         enum qeth_link_types link_type;
5450
5451         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5452                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5453         else
5454                 link_type = card->info.link_type;
5455
5456         ecmd->transceiver = XCVR_INTERNAL;
5457         ecmd->supported = SUPPORTED_Autoneg;
5458         ecmd->advertising = ADVERTISED_Autoneg;
5459         ecmd->duplex = DUPLEX_FULL;
5460         ecmd->autoneg = AUTONEG_ENABLE;
5461
5462         switch (link_type) {
5463         case QETH_LINK_TYPE_FAST_ETH:
5464         case QETH_LINK_TYPE_LANE_ETH100:
5465                 ecmd->supported |= SUPPORTED_10baseT_Half |
5466                                         SUPPORTED_10baseT_Full |
5467                                         SUPPORTED_100baseT_Half |
5468                                         SUPPORTED_100baseT_Full |
5469                                         SUPPORTED_TP;
5470                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5471                                         ADVERTISED_10baseT_Full |
5472                                         ADVERTISED_100baseT_Half |
5473                                         ADVERTISED_100baseT_Full |
5474                                         ADVERTISED_TP;
5475                 ecmd->speed = SPEED_100;
5476                 ecmd->port = PORT_TP;
5477                 break;
5478
5479         case QETH_LINK_TYPE_GBIT_ETH:
5480         case QETH_LINK_TYPE_LANE_ETH1000:
5481                 ecmd->supported |= SUPPORTED_10baseT_Half |
5482                                         SUPPORTED_10baseT_Full |
5483                                         SUPPORTED_100baseT_Half |
5484                                         SUPPORTED_100baseT_Full |
5485                                         SUPPORTED_1000baseT_Half |
5486                                         SUPPORTED_1000baseT_Full |
5487                                         SUPPORTED_FIBRE;
5488                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5489                                         ADVERTISED_10baseT_Full |
5490                                         ADVERTISED_100baseT_Half |
5491                                         ADVERTISED_100baseT_Full |
5492                                         ADVERTISED_1000baseT_Half |
5493                                         ADVERTISED_1000baseT_Full |
5494                                         ADVERTISED_FIBRE;
5495                 ecmd->speed = SPEED_1000;
5496                 ecmd->port = PORT_FIBRE;
5497                 break;
5498
5499         case QETH_LINK_TYPE_10GBIT_ETH:
5500                 ecmd->supported |= SUPPORTED_10baseT_Half |
5501                                         SUPPORTED_10baseT_Full |
5502                                         SUPPORTED_100baseT_Half |
5503                                         SUPPORTED_100baseT_Full |
5504                                         SUPPORTED_1000baseT_Half |
5505                                         SUPPORTED_1000baseT_Full |
5506                                         SUPPORTED_10000baseT_Full |
5507                                         SUPPORTED_FIBRE;
5508                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5509                                         ADVERTISED_10baseT_Full |
5510                                         ADVERTISED_100baseT_Half |
5511                                         ADVERTISED_100baseT_Full |
5512                                         ADVERTISED_1000baseT_Half |
5513                                         ADVERTISED_1000baseT_Full |
5514                                         ADVERTISED_10000baseT_Full |
5515                                         ADVERTISED_FIBRE;
5516                 ecmd->speed = SPEED_10000;
5517                 ecmd->port = PORT_FIBRE;
5518                 break;
5519
5520         default:
5521                 ecmd->supported |= SUPPORTED_10baseT_Half |
5522                                         SUPPORTED_10baseT_Full |
5523                                         SUPPORTED_TP;
5524                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5525                                         ADVERTISED_10baseT_Full |
5526                                         ADVERTISED_TP;
5527                 ecmd->speed = SPEED_10;
5528                 ecmd->port = PORT_TP;
5529         }
5530
5531         return 0;
5532 }
5533 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5534
5535 static int __init qeth_core_init(void)
5536 {
5537         int rc;
5538
5539         pr_info("loading core functions\n");
5540         INIT_LIST_HEAD(&qeth_core_card_list.list);
5541         rwlock_init(&qeth_core_card_list.rwlock);
5542
5543         rc = qeth_register_dbf_views();
5544         if (rc)
5545                 goto out_err;
5546         rc = ccw_driver_register(&qeth_ccw_driver);
5547         if (rc)
5548                 goto ccw_err;
5549         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5550         if (rc)
5551                 goto ccwgroup_err;
5552         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
5553                                 &driver_attr_group);
5554         if (rc)
5555                 goto driver_err;
5556         qeth_core_root_dev = root_device_register("qeth");
5557         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5558         if (rc)
5559                 goto register_err;
5560
5561         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5562                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5563         if (!qeth_core_header_cache) {
5564                 rc = -ENOMEM;
5565                 goto slab_err;
5566         }
5567
5568         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5569                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5570         if (!qeth_qdio_outbuf_cache) {
5571                 rc = -ENOMEM;
5572                 goto cqslab_err;
5573         }
5574
5575         return 0;
5576 cqslab_err:
5577         kmem_cache_destroy(qeth_core_header_cache);
5578 slab_err:
5579         root_device_unregister(qeth_core_root_dev);
5580 register_err:
5581         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
5582                            &driver_attr_group);
5583 driver_err:
5584         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5585 ccwgroup_err:
5586         ccw_driver_unregister(&qeth_ccw_driver);
5587 ccw_err:
5588         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
5589         qeth_unregister_dbf_views();
5590 out_err:
5591         pr_err("Initializing the qeth device driver failed\n");
5592         return rc;
5593 }
5594
5595 static void __exit qeth_core_exit(void)
5596 {
5597         root_device_unregister(qeth_core_root_dev);
5598         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
5599                            &driver_attr_group);
5600         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5601         ccw_driver_unregister(&qeth_ccw_driver);
5602         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5603         kmem_cache_destroy(qeth_core_header_cache);
5604         qeth_unregister_dbf_views();
5605         pr_info("core functions removed\n");
5606 }
5607
5608 module_init(qeth_core_init);
5609 module_exit(qeth_core_exit);
5610 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5611 MODULE_DESCRIPTION("qeth core functions");
5612 MODULE_LICENSE("GPL");