drivers/s390/net/qeth_core_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/ip.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21 #include <linux/slab.h>
  22 #include <net/iucv/af_iucv.h>
  23
  24 #include <asm/ebcdic.h>
  25 #include <asm/io.h>
  26 #include <asm/sysinfo.h>
  27 #include <asm/compat.h>
  28
  29 #include "qeth_core.h"
  30
  31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  33         /*                   N  P  A    M  L  V                      H  */
  34         [QETH_DBF_SETUP] = {"qeth_setup",
  35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_MSG]   = {"qeth_msg",
  37                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  38         [QETH_DBF_CTRL]  = {"qeth_control",
  39                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  40 };
  41 EXPORT_SYMBOL_GPL(qeth_dbf);
  42
  43 struct qeth_card_list_struct qeth_core_card_list;
  44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  45 struct kmem_cache *qeth_core_header_cache;
  46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  47 static struct kmem_cache *qeth_qdio_outbuf_cache;
  48
  49 static struct device *qeth_core_root_dev;
  50 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  51 static struct lock_class_key qdio_out_skb_queue_key;
  52 static struct mutex qeth_mod_mutex;
  53
  54 static void qeth_send_control_data_cb(struct qeth_channel *,
  55                         struct qeth_cmd_buffer *);
  56 static int qeth_issue_next_read(struct qeth_card *);
  57 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  58 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  59 static void qeth_free_buffer_pool(struct qeth_card *);
  60 static int qeth_qdio_establish(struct qeth_card *);
  61 static void qeth_free_qdio_buffers(struct qeth_card *);
  62 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  63                 struct qeth_qdio_out_buffer *buf,
  64                 enum iucv_tx_notify notification);
  65 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  66 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  67                 struct qeth_qdio_out_buffer *buf,
  68                 enum qeth_qdio_buffer_states newbufstate);
  69 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  70
  71 static inline const char *qeth_get_cardname(struct qeth_card *card)
  72 {
  73         if (card->info.guestlan) {
  74                 switch (card->info.type) {
  75                 case QETH_CARD_TYPE_OSD:
  76                         return " Guest LAN QDIO";
  77                 case QETH_CARD_TYPE_IQD:
  78                         return " Guest LAN Hiper";
  79                 case QETH_CARD_TYPE_OSM:
  80                         return " Guest LAN QDIO - OSM";
  81                 case QETH_CARD_TYPE_OSX:
  82                         return " Guest LAN QDIO - OSX";
  83                 default:
  84                         return " unknown";
  85                 }
  86         } else {
  87                 switch (card->info.type) {
  88                 case QETH_CARD_TYPE_OSD:
  89                         return " OSD Express";
  90                 case QETH_CARD_TYPE_IQD:
  91                         return " HiperSockets";
  92                 case QETH_CARD_TYPE_OSN:
  93                         return " OSN QDIO";
  94                 case QETH_CARD_TYPE_OSM:
  95                         return " OSM QDIO";
  96                 case QETH_CARD_TYPE_OSX:
  97                         return " OSX QDIO";
  98                 default:
  99                         return " unknown";
 100                 }
 101         }
 102         return " n/a";
 103 }
 104
 105 /* max length to be returned: 14 */
 106 const char *qeth_get_cardname_short(struct qeth_card *card)
 107 {
 108         if (card->info.guestlan) {
 109                 switch (card->info.type) {
 110                 case QETH_CARD_TYPE_OSD:
 111                         return "GuestLAN QDIO";
 112                 case QETH_CARD_TYPE_IQD:
 113                         return "GuestLAN Hiper";
 114                 case QETH_CARD_TYPE_OSM:
 115                         return "GuestLAN OSM";
 116                 case QETH_CARD_TYPE_OSX:
 117                         return "GuestLAN OSX";
 118                 default:
 119                         return "unknown";
 120                 }
 121         } else {
 122                 switch (card->info.type) {
 123                 case QETH_CARD_TYPE_OSD:
 124                         switch (card->info.link_type) {
 125                         case QETH_LINK_TYPE_FAST_ETH:
 126                                 return "OSD_100";
 127                         case QETH_LINK_TYPE_HSTR:
 128                                 return "HSTR";
 129                         case QETH_LINK_TYPE_GBIT_ETH:
 130                                 return "OSD_1000";
 131                         case QETH_LINK_TYPE_10GBIT_ETH:
 132                                 return "OSD_10GIG";
 133                         case QETH_LINK_TYPE_LANE_ETH100:
 134                                 return "OSD_FE_LANE";
 135                         case QETH_LINK_TYPE_LANE_TR:
 136                                 return "OSD_TR_LANE";
 137                         case QETH_LINK_TYPE_LANE_ETH1000:
 138                                 return "OSD_GbE_LANE";
 139                         case QETH_LINK_TYPE_LANE:
 140                                 return "OSD_ATM_LANE";
 141                         default:
 142                                 return "OSD_Express";
 143                         }
 144                 case QETH_CARD_TYPE_IQD:
 145                         return "HiperSockets";
 146                 case QETH_CARD_TYPE_OSN:
 147                         return "OSN";
 148                 case QETH_CARD_TYPE_OSM:
 149                         return "OSM_1000";
 150                 case QETH_CARD_TYPE_OSX:
 151                         return "OSX_10GIG";
 152                 default:
 153                         return "unknown";
 154                 }
 155         }
 156         return "n/a";
 157 }
 158
 159 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 160                          int clear_start_mask)
 161 {
 162         unsigned long flags;
 163
 164         spin_lock_irqsave(&card->thread_mask_lock, flags);
 165         card->thread_allowed_mask = threads;
 166         if (clear_start_mask)
 167                 card->thread_start_mask &= threads;
 168         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 169         wake_up(&card->wait_q);
 170 }
 171 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 172
 173 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 174 {
 175         unsigned long flags;
 176         int rc = 0;
 177
 178         spin_lock_irqsave(&card->thread_mask_lock, flags);
 179         rc = (card->thread_running_mask & threads);
 180         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 181         return rc;
 182 }
 183 EXPORT_SYMBOL_GPL(qeth_threads_running);
 184
 185 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 186 {
 187         return wait_event_interruptible(card->wait_q,
 188                         qeth_threads_running(card, threads) == 0);
 189 }
 190 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 191
 192 void qeth_clear_working_pool_list(struct qeth_card *card)
 193 {
 194         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 195
 196         QETH_CARD_TEXT(card, 5, "clwrklst");
 197         list_for_each_entry_safe(pool_entry, tmp,
 198                             &card->qdio.in_buf_pool.entry_list, list){
 199                         list_del(&pool_entry->list);
 200         }
 201 }
 202 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 203
 204 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 205 {
 206         struct qeth_buffer_pool_entry *pool_entry;
 207         void *ptr;
 208         int i, j;
 209
 210         QETH_CARD_TEXT(card, 5, "alocpool");
 211         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 212                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 213                 if (!pool_entry) {
 214                         qeth_free_buffer_pool(card);
 215                         return -ENOMEM;
 216                 }
 217                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 218                         ptr = (void *) __get_free_page(GFP_KERNEL);
 219                         if (!ptr) {
 220                                 while (j > 0)
 221                                         free_page((unsigned long)
 222                                                   pool_entry->elements[--j]);
 223                                 kfree(pool_entry);
 224                                 qeth_free_buffer_pool(card);
 225                                 return -ENOMEM;
 226                         }
 227                         pool_entry->elements[j] = ptr;
 228                 }
 229                 list_add(&pool_entry->init_list,
 230                          &card->qdio.init_pool.entry_list);
 231         }
 232         return 0;
 233 }
 234
 235 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 236 {
 237         QETH_CARD_TEXT(card, 2, "realcbp");
 238
 239         if ((card->state != CARD_STATE_DOWN) &&
 240             (card->state != CARD_STATE_RECOVER))
 241                 return -EPERM;
 242
 243         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 244         qeth_clear_working_pool_list(card);
 245         qeth_free_buffer_pool(card);
 246         card->qdio.in_buf_pool.buf_count = bufcnt;
 247         card->qdio.init_pool.buf_count = bufcnt;
 248         return qeth_alloc_buffer_pool(card);
 249 }
 250 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 251
 252 static inline int qeth_cq_init(struct qeth_card *card)
 253 {
 254         int rc;
 255
 256         if (card->options.cq == QETH_CQ_ENABLED) {
 257                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 258                 memset(card->qdio.c_q->qdio_bufs, 0,
 259                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
 260                 card->qdio.c_q->next_buf_to_init = 127;
 261                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 262                              card->qdio.no_in_queues - 1, 0,
 263                              127);
 264                 if (rc) {
 265                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 266                         goto out;
 267                 }
 268         }
 269         rc = 0;
 270 out:
 271         return rc;
 272 }
 273
 274 static inline int qeth_alloc_cq(struct qeth_card *card)
 275 {
 276         int rc;
 277
 278         if (card->options.cq == QETH_CQ_ENABLED) {
 279                 int i;
 280                 struct qdio_outbuf_state *outbuf_states;
 281
 282                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 283                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
 284                                          GFP_KERNEL);
 285                 if (!card->qdio.c_q) {
 286                         rc = -1;
 287                         goto kmsg_out;
 288                 }
 289                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
 290
 291                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
 292                         card->qdio.c_q->bufs[i].buffer =
 293                                 &card->qdio.c_q->qdio_bufs[i];
 294                 }
 295
 296                 card->qdio.no_in_queues = 2;
 297
 298                 card->qdio.out_bufstates = (struct qdio_outbuf_state *)
 299                         kzalloc(card->qdio.no_out_queues *
 300                                 QDIO_MAX_BUFFERS_PER_Q *
 301                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 302                 outbuf_states = card->qdio.out_bufstates;
 303                 if (outbuf_states == NULL) {
 304                         rc = -1;
 305                         goto free_cq_out;
 306                 }
 307                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 308                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 309                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 310                 }
 311         } else {
 312                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 313                 card->qdio.c_q = NULL;
 314                 card->qdio.no_in_queues = 1;
 315         }
 316         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 317         rc = 0;
 318 out:
 319         return rc;
 320 free_cq_out:
 321         kfree(card->qdio.c_q);
 322         card->qdio.c_q = NULL;
 323 kmsg_out:
 324         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 325         goto out;
 326 }
 327
 328 static inline void qeth_free_cq(struct qeth_card *card)
 329 {
 330         if (card->qdio.c_q) {
 331                 --card->qdio.no_in_queues;
 332                 kfree(card->qdio.c_q);
 333                 card->qdio.c_q = NULL;
 334         }
 335         kfree(card->qdio.out_bufstates);
 336         card->qdio.out_bufstates = NULL;
 337 }
 338
 339 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 340         int delayed) {
 341         enum iucv_tx_notify n;
 342
 343         switch (sbalf15) {
 344         case 0:
 345                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 346                 break;
 347         case 4:
 348         case 16:
 349         case 17:
 350         case 18:
 351                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 352                         TX_NOTIFY_UNREACHABLE;
 353                 break;
 354         default:
 355                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 356                         TX_NOTIFY_GENERALERROR;
 357                 break;
 358         }
 359
 360         return n;
 361 }
 362
 363 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 364         int bidx, int forced_cleanup)
 365 {
 366         if (q->card->options.cq != QETH_CQ_ENABLED)
 367                 return;
 368
 369         if (q->bufs[bidx]->next_pending != NULL) {
 370                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 371                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 372
 373                 while (c) {
 374                         if (forced_cleanup ||
 375                             atomic_read(&c->state) ==
 376                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 377                                 struct qeth_qdio_out_buffer *f = c;
 378                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 379                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 380                                 /* release here to avoid interleaving between
 381                                    outbound tasklet and inbound tasklet
 382                                    regarding notifications and lifecycle */
 383                                 qeth_release_skbs(c);
 384
 385                                 c = f->next_pending;
 386                                 BUG_ON(head->next_pending != f);
 387                                 head->next_pending = c;
 388                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 389                         } else {
 390                                 head = c;
 391                                 c = c->next_pending;
 392                         }
 393
 394                 }
 395         }
 396         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 397                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 398                 /* for recovery situations */
 399                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 400                 qeth_init_qdio_out_buf(q, bidx);
 401                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 402         }
 403 }
 404
 405
 406 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 407                 unsigned long phys_aob_addr) {
 408         struct qaob *aob;
 409         struct qeth_qdio_out_buffer *buffer;
 410         enum iucv_tx_notify notification;
 411
 412         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 413         QETH_CARD_TEXT(card, 5, "haob");
 414         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 415         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 416         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 417
 418         BUG_ON(buffer == NULL);
 419
 420         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 421                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 422                 notification = TX_NOTIFY_OK;
 423         } else {
 424                 BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
 425                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 426                 notification = TX_NOTIFY_DELAYED_OK;
 427         }
 428
 429         if (aob->aorc != 0)  {
 430                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 431                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 432         }
 433         qeth_notify_skbs(buffer->q, buffer, notification);
 434
 435         buffer->aob = NULL;
 436         qeth_clear_output_buffer(buffer->q, buffer,
 437                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 438
 439         /* from here on: do not touch buffer anymore */
 440         qdio_release_aob(aob);
 441 }
 442
 443 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 444 {
 445         return card->options.cq == QETH_CQ_ENABLED &&
 446             card->qdio.c_q != NULL &&
 447             queue != 0 &&
 448             queue == card->qdio.no_in_queues - 1;
 449 }
 450
 451
 452 static int qeth_issue_next_read(struct qeth_card *card)
 453 {
 454         int rc;
 455         struct qeth_cmd_buffer *iob;
 456
 457         QETH_CARD_TEXT(card, 5, "issnxrd");
 458         if (card->read.state != CH_STATE_UP)
 459                 return -EIO;
 460         iob = qeth_get_buffer(&card->read);
 461         if (!iob) {
 462                 dev_warn(&card->gdev->dev, "The qeth device driver "
 463                         "failed to recover an error on the device\n");
 464                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 465                         "available\n", dev_name(&card->gdev->dev));
 466                 return -ENOMEM;
 467         }
 468         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 469         QETH_CARD_TEXT(card, 6, "noirqpnd");
 470         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 471                               (addr_t) iob, 0, 0);
 472         if (rc) {
 473                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 474                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 475                 atomic_set(&card->read.irq_pending, 0);
 476                 card->read_or_write_problem = 1;
 477                 qeth_schedule_recovery(card);
 478                 wake_up(&card->wait_q);
 479         }
 480         return rc;
 481 }
 482
 483 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 484 {
 485         struct qeth_reply *reply;
 486
 487         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 488         if (reply) {
 489                 atomic_set(&reply->refcnt, 1);
 490                 atomic_set(&reply->received, 0);
 491                 reply->card = card;
 492         }
 493         return reply;
 494 }
 495
 496 static void qeth_get_reply(struct qeth_reply *reply)
 497 {
 498         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 499         atomic_inc(&reply->refcnt);
 500 }
 501
 502 static void qeth_put_reply(struct qeth_reply *reply)
 503 {
 504         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 505         if (atomic_dec_and_test(&reply->refcnt))
 506                 kfree(reply);
 507 }
 508
 509 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 510                 struct qeth_card *card)
 511 {
 512         char *ipa_name;
 513         int com = cmd->hdr.command;
 514         ipa_name = qeth_get_ipa_cmd_name(com);
 515         if (rc)
 516                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 517                                 "x%X \"%s\"\n",
 518                                 ipa_name, com, dev_name(&card->gdev->dev),
 519                                 QETH_CARD_IFNAME(card), rc,
 520                                 qeth_get_ipa_msg(rc));
 521         else
 522                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 523                                 ipa_name, com, dev_name(&card->gdev->dev),
 524                                 QETH_CARD_IFNAME(card));
 525 }
 526
 527 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 528                 struct qeth_cmd_buffer *iob)
 529 {
 530         struct qeth_ipa_cmd *cmd = NULL;
 531
 532         QETH_CARD_TEXT(card, 5, "chkipad");
 533         if (IS_IPA(iob->data)) {
 534                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 535                 if (IS_IPA_REPLY(cmd)) {
 536                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 537                             cmd->hdr.command != IPA_CMD_DELCCID &&
 538                             cmd->hdr.command != IPA_CMD_MODCCID &&
 539                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 540                                 qeth_issue_ipa_msg(cmd,
 541                                                 cmd->hdr.return_code, card);
 542                         return cmd;
 543                 } else {
 544                         switch (cmd->hdr.command) {
 545                         case IPA_CMD_STOPLAN:
 546                                 dev_warn(&card->gdev->dev,
 547                                            "The link for interface %s on CHPID"
 548                                            " 0x%X failed\n",
 549                                            QETH_CARD_IFNAME(card),
 550                                            card->info.chpid);
 551                                 card->lan_online = 0;
 552                                 if (card->dev && netif_carrier_ok(card->dev))
 553                                         netif_carrier_off(card->dev);
 554                                 return NULL;
 555                         case IPA_CMD_STARTLAN:
 556                                 dev_info(&card->gdev->dev,
 557                                            "The link for %s on CHPID 0x%X has"
 558                                            " been restored\n",
 559                                            QETH_CARD_IFNAME(card),
 560                                            card->info.chpid);
 561                                 netif_carrier_on(card->dev);
 562                                 card->lan_online = 1;
 563                                 if (card->info.hwtrap)
 564                                         card->info.hwtrap = 2;
 565                                 qeth_schedule_recovery(card);
 566                                 return NULL;
 567                         case IPA_CMD_MODCCID:
 568                                 return cmd;
 569                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 570                                 QETH_CARD_TEXT(card, 3, "irla");
 571                                 break;
 572                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 573                                 QETH_CARD_TEXT(card, 3, "urla");
 574                                 break;
 575                         default:
 576                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 577                                            "but not a reply!\n");
 578                                 break;
 579                         }
 580                 }
 581         }
 582         return cmd;
 583 }
 584
 585 void qeth_clear_ipacmd_list(struct qeth_card *card)
 586 {
 587         struct qeth_reply *reply, *r;
 588         unsigned long flags;
 589
 590         QETH_CARD_TEXT(card, 4, "clipalst");
 591
 592         spin_lock_irqsave(&card->lock, flags);
 593         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 594                 qeth_get_reply(reply);
 595                 reply->rc = -EIO;
 596                 atomic_inc(&reply->received);
 597                 list_del_init(&reply->list);
 598                 wake_up(&reply->wait_q);
 599                 qeth_put_reply(reply);
 600         }
 601         spin_unlock_irqrestore(&card->lock, flags);
 602         atomic_set(&card->write.irq_pending, 0);
 603 }
 604 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 605
 606 static int qeth_check_idx_response(struct qeth_card *card,
 607         unsigned char *buffer)
 608 {
 609         if (!buffer)
 610                 return 0;
 611
 612         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 613         if ((buffer[2] & 0xc0) == 0xc0) {
 614                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 615                            "with cause code 0x%02x%s\n",
 616                            buffer[4],
 617                            ((buffer[4] == 0x22) ?
 618                             " -- try another portname" : ""));
 619                 QETH_CARD_TEXT(card, 2, "ckidxres");
 620                 QETH_CARD_TEXT(card, 2, " idxterm");
 621                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 622                 if (buffer[4] == 0xf6) {
 623                         dev_err(&card->gdev->dev,
 624                         "The qeth device is not configured "
 625                         "for the OSI layer required by z/VM\n");
 626                         return -EPERM;
 627                 }
 628                 return -EIO;
 629         }
 630         return 0;
 631 }
 632
 633 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 634                 __u32 len)
 635 {
 636         struct qeth_card *card;
 637
 638         card = CARD_FROM_CDEV(channel->ccwdev);
 639         QETH_CARD_TEXT(card, 4, "setupccw");
 640         if (channel == &card->read)
 641                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 642         else
 643                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 644         channel->ccw.count = len;
 645         channel->ccw.cda = (__u32) __pa(iob);
 646 }
 647
 648 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 649 {
 650         __u8 index;
 651
 652         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 653         index = channel->io_buf_no;
 654         do {
 655                 if (channel->iob[index].state == BUF_STATE_FREE) {
 656                         channel->iob[index].state = BUF_STATE_LOCKED;
 657                         channel->io_buf_no = (channel->io_buf_no + 1) %
 658                                 QETH_CMD_BUFFER_NO;
 659                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 660                         return channel->iob + index;
 661                 }
 662                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 663         } while (index != channel->io_buf_no);
 664
 665         return NULL;
 666 }
 667
 668 void qeth_release_buffer(struct qeth_channel *channel,
 669                 struct qeth_cmd_buffer *iob)
 670 {
 671         unsigned long flags;
 672
 673         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 674         spin_lock_irqsave(&channel->iob_lock, flags);
 675         memset(iob->data, 0, QETH_BUFSIZE);
 676         iob->state = BUF_STATE_FREE;
 677         iob->callback = qeth_send_control_data_cb;
 678         iob->rc = 0;
 679         spin_unlock_irqrestore(&channel->iob_lock, flags);
 680         wake_up(&channel->wait_q);
 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_set_single_write_queues(struct qeth_card *card)
1261 {
1262         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1263             (card->qdio.no_out_queues == 4))
1264                 qeth_free_qdio_buffers(card);
1265
1266         card->qdio.no_out_queues = 1;
1267         if (card->qdio.default_out_queue != 0)
1268                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1269
1270         card->qdio.default_out_queue = 0;
1271 }
1272
1273 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1274 {
1275         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1276             (card->qdio.no_out_queues == 1)) {
1277                 qeth_free_qdio_buffers(card);
1278                 card->qdio.default_out_queue = 2;
1279         }
1280         card->qdio.no_out_queues = 4;
1281 }
1282
1283 static void qeth_update_from_chp_desc(struct qeth_card *card)
1284 {
1285         struct ccw_device *ccwdev;
1286         struct channelPath_dsc {
1287                 u8 flags;
1288                 u8 lsn;
1289                 u8 desc;
1290                 u8 chpid;
1291                 u8 swla;
1292                 u8 zeroes;
1293                 u8 chla;
1294                 u8 chpp;
1295         } *chp_dsc;
1296
1297         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1298
1299         ccwdev = card->data.ccwdev;
1300         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1301         if (!chp_dsc)
1302                 goto out;
1303
1304         card->info.func_level = 0x4100 + chp_dsc->desc;
1305         if (card->info.type == QETH_CARD_TYPE_IQD)
1306                 goto out;
1307
1308         /* CHPP field bit 6 == 1 -> single queue */
1309         if ((chp_dsc->chpp & 0x02) == 0x02)
1310                 qeth_set_single_write_queues(card);
1311         else
1312                 qeth_set_multiple_write_queues(card);
1313 out:
1314         kfree(chp_dsc);
1315         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1316         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1317 }
1318
1319 static void qeth_init_qdio_info(struct qeth_card *card)
1320 {
1321         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1322         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1323         /* inbound */
1324         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1325         if (card->info.type == QETH_CARD_TYPE_IQD)
1326                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1327         else
1328                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1329         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1330         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1331         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1332 }
1333
1334 static void qeth_set_intial_options(struct qeth_card *card)
1335 {
1336         card->options.route4.type = NO_ROUTER;
1337         card->options.route6.type = NO_ROUTER;
1338         card->options.fake_broadcast = 0;
1339         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1340         card->options.performance_stats = 0;
1341         card->options.rx_sg_cb = QETH_RX_SG_CB;
1342         card->options.isolation = ISOLATION_MODE_NONE;
1343         card->options.cq = QETH_CQ_DISABLED;
1344 }
1345
1346 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1347 {
1348         unsigned long flags;
1349         int rc = 0;
1350
1351         spin_lock_irqsave(&card->thread_mask_lock, flags);
1352         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1353                         (u8) card->thread_start_mask,
1354                         (u8) card->thread_allowed_mask,
1355                         (u8) card->thread_running_mask);
1356         rc = (card->thread_start_mask & thread);
1357         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1358         return rc;
1359 }
1360
1361 static void qeth_start_kernel_thread(struct work_struct *work)
1362 {
1363         struct task_struct *ts;
1364         struct qeth_card *card = container_of(work, struct qeth_card,
1365                                         kernel_thread_starter);
1366         QETH_CARD_TEXT(card , 2, "strthrd");
1367
1368         if (card->read.state != CH_STATE_UP &&
1369             card->write.state != CH_STATE_UP)
1370                 return;
1371         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1372                 ts = kthread_run(card->discipline->recover, (void *)card,
1373                                 "qeth_recover");
1374                 if (IS_ERR(ts)) {
1375                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1376                         qeth_clear_thread_running_bit(card,
1377                                 QETH_RECOVER_THREAD);
1378                 }
1379         }
1380 }
1381
1382 static int qeth_setup_card(struct qeth_card *card)
1383 {
1384
1385         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1386         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1387
1388         card->read.state  = CH_STATE_DOWN;
1389         card->write.state = CH_STATE_DOWN;
1390         card->data.state  = CH_STATE_DOWN;
1391         card->state = CARD_STATE_DOWN;
1392         card->lan_online = 0;
1393         card->read_or_write_problem = 0;
1394         card->dev = NULL;
1395         spin_lock_init(&card->vlanlock);
1396         spin_lock_init(&card->mclock);
1397         spin_lock_init(&card->lock);
1398         spin_lock_init(&card->ip_lock);
1399         spin_lock_init(&card->thread_mask_lock);
1400         mutex_init(&card->conf_mutex);
1401         mutex_init(&card->discipline_mutex);
1402         card->thread_start_mask = 0;
1403         card->thread_allowed_mask = 0;
1404         card->thread_running_mask = 0;
1405         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1406         INIT_LIST_HEAD(&card->ip_list);
1407         INIT_LIST_HEAD(card->ip_tbd_list);
1408         INIT_LIST_HEAD(&card->cmd_waiter_list);
1409         init_waitqueue_head(&card->wait_q);
1410         /* initial options */
1411         qeth_set_intial_options(card);
1412         /* IP address takeover */
1413         INIT_LIST_HEAD(&card->ipato.entries);
1414         card->ipato.enabled = 0;
1415         card->ipato.invert4 = 0;
1416         card->ipato.invert6 = 0;
1417         /* init QDIO stuff */
1418         qeth_init_qdio_info(card);
1419         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1420         return 0;
1421 }
1422
1423 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1424 {
1425         struct qeth_card *card = container_of(slr, struct qeth_card,
1426                                         qeth_service_level);
1427         if (card->info.mcl_level[0])
1428                 seq_printf(m, "qeth: %s firmware level %s\n",
1429                         CARD_BUS_ID(card), card->info.mcl_level);
1430 }
1431
1432 static struct qeth_card *qeth_alloc_card(void)
1433 {
1434         struct qeth_card *card;
1435
1436         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1437         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1438         if (!card)
1439                 goto out;
1440         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1441         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1442         if (!card->ip_tbd_list) {
1443                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1444                 goto out_card;
1445         }
1446         if (qeth_setup_channel(&card->read))
1447                 goto out_ip;
1448         if (qeth_setup_channel(&card->write))
1449                 goto out_channel;
1450         card->options.layer2 = -1;
1451         card->qeth_service_level.seq_print = qeth_core_sl_print;
1452         register_service_level(&card->qeth_service_level);
1453         return card;
1454
1455 out_channel:
1456         qeth_clean_channel(&card->read);
1457 out_ip:
1458         kfree(card->ip_tbd_list);
1459 out_card:
1460         kfree(card);
1461 out:
1462         return NULL;
1463 }
1464
1465 static int qeth_determine_card_type(struct qeth_card *card)
1466 {
1467         int i = 0;
1468
1469         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1470
1471         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1472         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1473         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1474                 if ((CARD_RDEV(card)->id.dev_type ==
1475                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1476                     (CARD_RDEV(card)->id.dev_model ==
1477                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1478                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1479                         card->qdio.no_out_queues =
1480                                 known_devices[i][QETH_QUEUE_NO_IND];
1481                         card->qdio.no_in_queues = 1;
1482                         card->info.is_multicast_different =
1483                                 known_devices[i][QETH_MULTICAST_IND];
1484                         qeth_update_from_chp_desc(card);
1485                         return 0;
1486                 }
1487                 i++;
1488         }
1489         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1490         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1491                 "unknown type\n");
1492         return -ENOENT;
1493 }
1494
1495 static int qeth_clear_channel(struct qeth_channel *channel)
1496 {
1497         unsigned long flags;
1498         struct qeth_card *card;
1499         int rc;
1500
1501         card = CARD_FROM_CDEV(channel->ccwdev);
1502         QETH_CARD_TEXT(card, 3, "clearch");
1503         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1504         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1505         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1506
1507         if (rc)
1508                 return rc;
1509         rc = wait_event_interruptible_timeout(card->wait_q,
1510                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1511         if (rc == -ERESTARTSYS)
1512                 return rc;
1513         if (channel->state != CH_STATE_STOPPED)
1514                 return -ETIME;
1515         channel->state = CH_STATE_DOWN;
1516         return 0;
1517 }
1518
1519 static int qeth_halt_channel(struct qeth_channel *channel)
1520 {
1521         unsigned long flags;
1522         struct qeth_card *card;
1523         int rc;
1524
1525         card = CARD_FROM_CDEV(channel->ccwdev);
1526         QETH_CARD_TEXT(card, 3, "haltch");
1527         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1528         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1529         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1530
1531         if (rc)
1532                 return rc;
1533         rc = wait_event_interruptible_timeout(card->wait_q,
1534                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1535         if (rc == -ERESTARTSYS)
1536                 return rc;
1537         if (channel->state != CH_STATE_HALTED)
1538                 return -ETIME;
1539         return 0;
1540 }
1541
1542 static int qeth_halt_channels(struct qeth_card *card)
1543 {
1544         int rc1 = 0, rc2 = 0, rc3 = 0;
1545
1546         QETH_CARD_TEXT(card, 3, "haltchs");
1547         rc1 = qeth_halt_channel(&card->read);
1548         rc2 = qeth_halt_channel(&card->write);
1549         rc3 = qeth_halt_channel(&card->data);
1550         if (rc1)
1551                 return rc1;
1552         if (rc2)
1553                 return rc2;
1554         return rc3;
1555 }
1556
1557 static int qeth_clear_channels(struct qeth_card *card)
1558 {
1559         int rc1 = 0, rc2 = 0, rc3 = 0;
1560
1561         QETH_CARD_TEXT(card, 3, "clearchs");
1562         rc1 = qeth_clear_channel(&card->read);
1563         rc2 = qeth_clear_channel(&card->write);
1564         rc3 = qeth_clear_channel(&card->data);
1565         if (rc1)
1566                 return rc1;
1567         if (rc2)
1568                 return rc2;
1569         return rc3;
1570 }
1571
1572 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1573 {
1574         int rc = 0;
1575
1576         QETH_CARD_TEXT(card, 3, "clhacrd");
1577
1578         if (halt)
1579                 rc = qeth_halt_channels(card);
1580         if (rc)
1581                 return rc;
1582         return qeth_clear_channels(card);
1583 }
1584
1585 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1586 {
1587         int rc = 0;
1588
1589         QETH_CARD_TEXT(card, 3, "qdioclr");
1590         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1591                 QETH_QDIO_CLEANING)) {
1592         case QETH_QDIO_ESTABLISHED:
1593                 if (card->info.type == QETH_CARD_TYPE_IQD)
1594                         rc = qdio_shutdown(CARD_DDEV(card),
1595                                 QDIO_FLAG_CLEANUP_USING_HALT);
1596                 else
1597                         rc = qdio_shutdown(CARD_DDEV(card),
1598                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1599                 if (rc)
1600                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1601                 qdio_free(CARD_DDEV(card));
1602                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1603                 break;
1604         case QETH_QDIO_CLEANING:
1605                 return rc;
1606         default:
1607                 break;
1608         }
1609         rc = qeth_clear_halt_card(card, use_halt);
1610         if (rc)
1611                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1612         card->state = CARD_STATE_DOWN;
1613         return rc;
1614 }
1615 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1616
1617 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1618                                int *length)
1619 {
1620         struct ciw *ciw;
1621         char *rcd_buf;
1622         int ret;
1623         struct qeth_channel *channel = &card->data;
1624         unsigned long flags;
1625
1626         /*
1627          * scan for RCD command in extended SenseID data
1628          */
1629         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1630         if (!ciw || ciw->cmd == 0)
1631                 return -EOPNOTSUPP;
1632         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1633         if (!rcd_buf)
1634                 return -ENOMEM;
1635
1636         channel->ccw.cmd_code = ciw->cmd;
1637         channel->ccw.cda = (__u32) __pa(rcd_buf);
1638         channel->ccw.count = ciw->count;
1639         channel->ccw.flags = CCW_FLAG_SLI;
1640         channel->state = CH_STATE_RCD;
1641         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1642         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1643                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1644                                        QETH_RCD_TIMEOUT);
1645         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1646         if (!ret)
1647                 wait_event(card->wait_q,
1648                            (channel->state == CH_STATE_RCD_DONE ||
1649                             channel->state == CH_STATE_DOWN));
1650         if (channel->state == CH_STATE_DOWN)
1651                 ret = -EIO;
1652         else
1653                 channel->state = CH_STATE_DOWN;
1654         if (ret) {
1655                 kfree(rcd_buf);
1656                 *buffer = NULL;
1657                 *length = 0;
1658         } else {
1659                 *length = ciw->count;
1660                 *buffer = rcd_buf;
1661         }
1662         return ret;
1663 }
1664
1665 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1666 {
1667         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1668         card->info.chpid = prcd[30];
1669         card->info.unit_addr2 = prcd[31];
1670         card->info.cula = prcd[63];
1671         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1672                                (prcd[0x11] == _ascebc['M']));
1673 }
1674
1675 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1676 {
1677         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1678
1679         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1680             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1681                 card->info.blkt.time_total = 250;
1682                 card->info.blkt.inter_packet = 5;
1683                 card->info.blkt.inter_packet_jumbo = 15;
1684         } else {
1685                 card->info.blkt.time_total = 0;
1686                 card->info.blkt.inter_packet = 0;
1687                 card->info.blkt.inter_packet_jumbo = 0;
1688         }
1689 }
1690
1691 static void qeth_init_tokens(struct qeth_card *card)
1692 {
1693         card->token.issuer_rm_w = 0x00010103UL;
1694         card->token.cm_filter_w = 0x00010108UL;
1695         card->token.cm_connection_w = 0x0001010aUL;
1696         card->token.ulp_filter_w = 0x0001010bUL;
1697         card->token.ulp_connection_w = 0x0001010dUL;
1698 }
1699
1700 static void qeth_init_func_level(struct qeth_card *card)
1701 {
1702         switch (card->info.type) {
1703         case QETH_CARD_TYPE_IQD:
1704                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1705                 break;
1706         case QETH_CARD_TYPE_OSD:
1707         case QETH_CARD_TYPE_OSN:
1708                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1709                 break;
1710         default:
1711                 break;
1712         }
1713 }
1714
1715 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1716                 void (*idx_reply_cb)(struct qeth_channel *,
1717                         struct qeth_cmd_buffer *))
1718 {
1719         struct qeth_cmd_buffer *iob;
1720         unsigned long flags;
1721         int rc;
1722         struct qeth_card *card;
1723
1724         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1725         card = CARD_FROM_CDEV(channel->ccwdev);
1726         iob = qeth_get_buffer(channel);
1727         iob->callback = idx_reply_cb;
1728         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1729         channel->ccw.count = QETH_BUFSIZE;
1730         channel->ccw.cda = (__u32) __pa(iob->data);
1731
1732         wait_event(card->wait_q,
1733                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1734         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1735         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1736         rc = ccw_device_start(channel->ccwdev,
1737                               &channel->ccw, (addr_t) iob, 0, 0);
1738         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1739
1740         if (rc) {
1741                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1742                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1743                 atomic_set(&channel->irq_pending, 0);
1744                 wake_up(&card->wait_q);
1745                 return rc;
1746         }
1747         rc = wait_event_interruptible_timeout(card->wait_q,
1748                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1749         if (rc == -ERESTARTSYS)
1750                 return rc;
1751         if (channel->state != CH_STATE_UP) {
1752                 rc = -ETIME;
1753                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1754                 qeth_clear_cmd_buffers(channel);
1755         } else
1756                 rc = 0;
1757         return rc;
1758 }
1759
1760 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1761                 void (*idx_reply_cb)(struct qeth_channel *,
1762                         struct qeth_cmd_buffer *))
1763 {
1764         struct qeth_card *card;
1765         struct qeth_cmd_buffer *iob;
1766         unsigned long flags;
1767         __u16 temp;
1768         __u8 tmp;
1769         int rc;
1770         struct ccw_dev_id temp_devid;
1771
1772         card = CARD_FROM_CDEV(channel->ccwdev);
1773
1774         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1775
1776         iob = qeth_get_buffer(channel);
1777         iob->callback = idx_reply_cb;
1778         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1779         channel->ccw.count = IDX_ACTIVATE_SIZE;
1780         channel->ccw.cda = (__u32) __pa(iob->data);
1781         if (channel == &card->write) {
1782                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1783                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1784                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1785                 card->seqno.trans_hdr++;
1786         } else {
1787                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1788                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1789                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1790         }
1791         tmp = ((__u8)card->info.portno) | 0x80;
1792         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1793         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1794                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1795         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1796                &card->info.func_level, sizeof(__u16));
1797         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1798         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1799         temp = (card->info.cula << 8) + card->info.unit_addr2;
1800         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1801
1802         wait_event(card->wait_q,
1803                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1804         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1805         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1806         rc = ccw_device_start(channel->ccwdev,
1807                               &channel->ccw, (addr_t) iob, 0, 0);
1808         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1809
1810         if (rc) {
1811                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1812                         rc);
1813                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1814                 atomic_set(&channel->irq_pending, 0);
1815                 wake_up(&card->wait_q);
1816                 return rc;
1817         }
1818         rc = wait_event_interruptible_timeout(card->wait_q,
1819                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1820         if (rc == -ERESTARTSYS)
1821                 return rc;
1822         if (channel->state != CH_STATE_ACTIVATING) {
1823                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1824                         " failed to recover an error on the device\n");
1825                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1826                         dev_name(&channel->ccwdev->dev));
1827                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1828                 qeth_clear_cmd_buffers(channel);
1829                 return -ETIME;
1830         }
1831         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1832 }
1833
1834 static int qeth_peer_func_level(int level)
1835 {
1836         if ((level & 0xff) == 8)
1837                 return (level & 0xff) + 0x400;
1838         if (((level >> 8) & 3) == 1)
1839                 return (level & 0xff) + 0x200;
1840         return level;
1841 }
1842
1843 static void qeth_idx_write_cb(struct qeth_channel *channel,
1844                 struct qeth_cmd_buffer *iob)
1845 {
1846         struct qeth_card *card;
1847         __u16 temp;
1848
1849         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1850
1851         if (channel->state == CH_STATE_DOWN) {
1852                 channel->state = CH_STATE_ACTIVATING;
1853                 goto out;
1854         }
1855         card = CARD_FROM_CDEV(channel->ccwdev);
1856
1857         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1858                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1859                         dev_err(&card->write.ccwdev->dev,
1860                                 "The adapter is used exclusively by another "
1861                                 "host\n");
1862                 else
1863                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1864                                 " negative reply\n",
1865                                 dev_name(&card->write.ccwdev->dev));
1866                 goto out;
1867         }
1868         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1869         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1870                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1871                         "function level mismatch (sent: 0x%x, received: "
1872                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1873                         card->info.func_level, temp);
1874                 goto out;
1875         }
1876         channel->state = CH_STATE_UP;
1877 out:
1878         qeth_release_buffer(channel, iob);
1879 }
1880
1881 static void qeth_idx_read_cb(struct qeth_channel *channel,
1882                 struct qeth_cmd_buffer *iob)
1883 {
1884         struct qeth_card *card;
1885         __u16 temp;
1886
1887         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1888         if (channel->state == CH_STATE_DOWN) {
1889                 channel->state = CH_STATE_ACTIVATING;
1890                 goto out;
1891         }
1892
1893         card = CARD_FROM_CDEV(channel->ccwdev);
1894         if (qeth_check_idx_response(card, iob->data))
1895                         goto out;
1896
1897         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1898                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1899                 case QETH_IDX_ACT_ERR_EXCL:
1900                         dev_err(&card->write.ccwdev->dev,
1901                                 "The adapter is used exclusively by another "
1902                                 "host\n");
1903                         break;
1904                 case QETH_IDX_ACT_ERR_AUTH:
1905                 case QETH_IDX_ACT_ERR_AUTH_USER:
1906                         dev_err(&card->read.ccwdev->dev,
1907                                 "Setting the device online failed because of "
1908                                 "insufficient authorization\n");
1909                         break;
1910                 default:
1911                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1912                                 " negative reply\n",
1913                                 dev_name(&card->read.ccwdev->dev));
1914                 }
1915                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1916                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1917                 goto out;
1918         }
1919
1920 /**
1921  *  * temporary fix for microcode bug
1922  *   * to revert it,replace OR by AND
1923  *    */
1924         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1925              (card->info.type == QETH_CARD_TYPE_OSD))
1926                 card->info.portname_required = 1;
1927
1928         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1929         if (temp != qeth_peer_func_level(card->info.func_level)) {
1930                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1931                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1932                         dev_name(&card->read.ccwdev->dev),
1933                         card->info.func_level, temp);
1934                 goto out;
1935         }
1936         memcpy(&card->token.issuer_rm_r,
1937                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1938                QETH_MPC_TOKEN_LENGTH);
1939         memcpy(&card->info.mcl_level[0],
1940                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1941         channel->state = CH_STATE_UP;
1942 out:
1943         qeth_release_buffer(channel, iob);
1944 }
1945
1946 void qeth_prepare_control_data(struct qeth_card *card, int len,
1947                 struct qeth_cmd_buffer *iob)
1948 {
1949         qeth_setup_ccw(&card->write, iob->data, len);
1950         iob->callback = qeth_release_buffer;
1951
1952         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1953                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1954         card->seqno.trans_hdr++;
1955         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1956                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1957         card->seqno.pdu_hdr++;
1958         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1959                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1960         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1961 }
1962 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1963
1964 int qeth_send_control_data(struct qeth_card *card, int len,
1965                 struct qeth_cmd_buffer *iob,
1966                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1967                         unsigned long),
1968                 void *reply_param)
1969 {
1970         int rc;
1971         unsigned long flags;
1972         struct qeth_reply *reply = NULL;
1973         unsigned long timeout, event_timeout;
1974         struct qeth_ipa_cmd *cmd;
1975
1976         QETH_CARD_TEXT(card, 2, "sendctl");
1977
1978         if (card->read_or_write_problem) {
1979                 qeth_release_buffer(iob->channel, iob);
1980                 return -EIO;
1981         }
1982         reply = qeth_alloc_reply(card);
1983         if (!reply) {
1984                 return -ENOMEM;
1985         }
1986         reply->callback = reply_cb;
1987         reply->param = reply_param;
1988         if (card->state == CARD_STATE_DOWN)
1989                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1990         else
1991                 reply->seqno = card->seqno.ipa++;
1992         init_waitqueue_head(&reply->wait_q);
1993         spin_lock_irqsave(&card->lock, flags);
1994         list_add_tail(&reply->list, &card->cmd_waiter_list);
1995         spin_unlock_irqrestore(&card->lock, flags);
1996         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1997
1998         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1999         qeth_prepare_control_data(card, len, iob);
2000
2001         if (IS_IPA(iob->data))
2002                 event_timeout = QETH_IPA_TIMEOUT;
2003         else
2004                 event_timeout = QETH_TIMEOUT;
2005         timeout = jiffies + event_timeout;
2006
2007         QETH_CARD_TEXT(card, 6, "noirqpnd");
2008         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2009         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2010                               (addr_t) iob, 0, 0);
2011         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2012         if (rc) {
2013                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2014                         "ccw_device_start rc = %i\n",
2015                         dev_name(&card->write.ccwdev->dev), rc);
2016                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2017                 spin_lock_irqsave(&card->lock, flags);
2018                 list_del_init(&reply->list);
2019                 qeth_put_reply(reply);
2020                 spin_unlock_irqrestore(&card->lock, flags);
2021                 qeth_release_buffer(iob->channel, iob);
2022                 atomic_set(&card->write.irq_pending, 0);
2023                 wake_up(&card->wait_q);
2024                 return rc;
2025         }
2026
2027         /* we have only one long running ipassist, since we can ensure
2028            process context of this command we can sleep */
2029         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2030         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2031             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2032                 if (!wait_event_timeout(reply->wait_q,
2033                     atomic_read(&reply->received), event_timeout))
2034                         goto time_err;
2035         } else {
2036                 while (!atomic_read(&reply->received)) {
2037                         if (time_after(jiffies, timeout))
2038                                 goto time_err;
2039                         cpu_relax();
2040                 }
2041         }
2042
2043         if (reply->rc == -EIO)
2044                 goto error;
2045         rc = reply->rc;
2046         qeth_put_reply(reply);
2047         return rc;
2048
2049 time_err:
2050         reply->rc = -ETIME;
2051         spin_lock_irqsave(&reply->card->lock, flags);
2052         list_del_init(&reply->list);
2053         spin_unlock_irqrestore(&reply->card->lock, flags);
2054         atomic_inc(&reply->received);
2055 error:
2056         atomic_set(&card->write.irq_pending, 0);
2057         qeth_release_buffer(iob->channel, iob);
2058         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2059         rc = reply->rc;
2060         qeth_put_reply(reply);
2061         return rc;
2062 }
2063 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2064
2065 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2066                 unsigned long data)
2067 {
2068         struct qeth_cmd_buffer *iob;
2069
2070         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2071
2072         iob = (struct qeth_cmd_buffer *) data;
2073         memcpy(&card->token.cm_filter_r,
2074                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2075                QETH_MPC_TOKEN_LENGTH);
2076         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2077         return 0;
2078 }
2079
2080 static int qeth_cm_enable(struct qeth_card *card)
2081 {
2082         int rc;
2083         struct qeth_cmd_buffer *iob;
2084
2085         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2086
2087         iob = qeth_wait_for_buffer(&card->write);
2088         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2089         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2090                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2091         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2092                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2093
2094         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2095                                     qeth_cm_enable_cb, NULL);
2096         return rc;
2097 }
2098
2099 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2100                 unsigned long data)
2101 {
2102
2103         struct qeth_cmd_buffer *iob;
2104
2105         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2106
2107         iob = (struct qeth_cmd_buffer *) data;
2108         memcpy(&card->token.cm_connection_r,
2109                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2110                QETH_MPC_TOKEN_LENGTH);
2111         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2112         return 0;
2113 }
2114
2115 static int qeth_cm_setup(struct qeth_card *card)
2116 {
2117         int rc;
2118         struct qeth_cmd_buffer *iob;
2119
2120         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2121
2122         iob = qeth_wait_for_buffer(&card->write);
2123         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2124         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2125                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2126         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2127                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2128         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2129                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2130         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2131                                     qeth_cm_setup_cb, NULL);
2132         return rc;
2133
2134 }
2135
2136 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2137 {
2138         switch (card->info.type) {
2139         case QETH_CARD_TYPE_UNKNOWN:
2140                 return 1500;
2141         case QETH_CARD_TYPE_IQD:
2142                 return card->info.max_mtu;
2143         case QETH_CARD_TYPE_OSD:
2144                 switch (card->info.link_type) {
2145                 case QETH_LINK_TYPE_HSTR:
2146                 case QETH_LINK_TYPE_LANE_TR:
2147                         return 2000;
2148                 default:
2149                         return 1492;
2150                 }
2151         case QETH_CARD_TYPE_OSM:
2152         case QETH_CARD_TYPE_OSX:
2153                 return 1492;
2154         default:
2155                 return 1500;
2156         }
2157 }
2158
2159 static inline int qeth_get_mtu_outof_framesize(int framesize)
2160 {
2161         switch (framesize) {
2162         case 0x4000:
2163                 return 8192;
2164         case 0x6000:
2165                 return 16384;
2166         case 0xa000:
2167                 return 32768;
2168         case 0xffff:
2169                 return 57344;
2170         default:
2171                 return 0;
2172         }
2173 }
2174
2175 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2176 {
2177         switch (card->info.type) {
2178         case QETH_CARD_TYPE_OSD:
2179         case QETH_CARD_TYPE_OSM:
2180         case QETH_CARD_TYPE_OSX:
2181         case QETH_CARD_TYPE_IQD:
2182                 return ((mtu >= 576) &&
2183                         (mtu <= card->info.max_mtu));
2184         case QETH_CARD_TYPE_OSN:
2185         case QETH_CARD_TYPE_UNKNOWN:
2186         default:
2187                 return 1;
2188         }
2189 }
2190
2191 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2192                 unsigned long data)
2193 {
2194
2195         __u16 mtu, framesize;
2196         __u16 len;
2197         __u8 link_type;
2198         struct qeth_cmd_buffer *iob;
2199
2200         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2201
2202         iob = (struct qeth_cmd_buffer *) data;
2203         memcpy(&card->token.ulp_filter_r,
2204                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2205                QETH_MPC_TOKEN_LENGTH);
2206         if (card->info.type == QETH_CARD_TYPE_IQD) {
2207                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2208                 mtu = qeth_get_mtu_outof_framesize(framesize);
2209                 if (!mtu) {
2210                         iob->rc = -EINVAL;
2211                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2212                         return 0;
2213                 }
2214                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2215                         /* frame size has changed */
2216                         if (card->dev &&
2217                             ((card->dev->mtu == card->info.initial_mtu) ||
2218                              (card->dev->mtu > mtu)))
2219                                 card->dev->mtu = mtu;
2220                         qeth_free_qdio_buffers(card);
2221                 }
2222                 card->info.initial_mtu = mtu;
2223                 card->info.max_mtu = mtu;
2224                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2225         } else {
2226                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2227                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2228                         iob->data);
2229                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2230         }
2231
2232         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2233         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2234                 memcpy(&link_type,
2235                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2236                 card->info.link_type = link_type;
2237         } else
2238                 card->info.link_type = 0;
2239         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2240         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2241         return 0;
2242 }
2243
2244 static int qeth_ulp_enable(struct qeth_card *card)
2245 {
2246         int rc;
2247         char prot_type;
2248         struct qeth_cmd_buffer *iob;
2249
2250         /*FIXME: trace view callbacks*/
2251         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2252
2253         iob = qeth_wait_for_buffer(&card->write);
2254         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2255
2256         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2257                 (__u8) card->info.portno;
2258         if (card->options.layer2)
2259                 if (card->info.type == QETH_CARD_TYPE_OSN)
2260                         prot_type = QETH_PROT_OSN2;
2261                 else
2262                         prot_type = QETH_PROT_LAYER2;
2263         else
2264                 prot_type = QETH_PROT_TCPIP;
2265
2266         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2267         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2268                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2269         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2270                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2271         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2272                card->info.portname, 9);
2273         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2274                                     qeth_ulp_enable_cb, NULL);
2275         return rc;
2276
2277 }
2278
2279 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2280                 unsigned long data)
2281 {
2282         struct qeth_cmd_buffer *iob;
2283         int rc = 0;
2284
2285         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2286
2287         iob = (struct qeth_cmd_buffer *) data;
2288         memcpy(&card->token.ulp_connection_r,
2289                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2290                QETH_MPC_TOKEN_LENGTH);
2291         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2292                      3)) {
2293                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2294                 dev_err(&card->gdev->dev, "A connection could not be "
2295                         "established because of an OLM limit\n");
2296                 iob->rc = -EMLINK;
2297         }
2298         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2299         return rc;
2300 }
2301
2302 static int qeth_ulp_setup(struct qeth_card *card)
2303 {
2304         int rc;
2305         __u16 temp;
2306         struct qeth_cmd_buffer *iob;
2307         struct ccw_dev_id dev_id;
2308
2309         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2310
2311         iob = qeth_wait_for_buffer(&card->write);
2312         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2313
2314         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2315                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2316         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2317                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2318         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2319                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2320
2321         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2322         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2323         temp = (card->info.cula << 8) + card->info.unit_addr2;
2324         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2325         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2326                                     qeth_ulp_setup_cb, NULL);
2327         return rc;
2328 }
2329
2330 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2331 {
2332         int rc;
2333         struct qeth_qdio_out_buffer *newbuf;
2334
2335         rc = 0;
2336         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2337         if (!newbuf) {
2338                 rc = -ENOMEM;
2339                 goto out;
2340         }
2341         newbuf->buffer = &q->qdio_bufs[bidx];
2342         skb_queue_head_init(&newbuf->skb_list);
2343         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2344         newbuf->q = q;
2345         newbuf->aob = NULL;
2346         newbuf->next_pending = q->bufs[bidx];
2347         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2348         q->bufs[bidx] = newbuf;
2349         if (q->bufstates) {
2350                 q->bufstates[bidx].user = newbuf;
2351                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2352                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2353                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2354                                 (long) newbuf->next_pending);
2355         }
2356 out:
2357         return rc;
2358 }
2359
2360
2361 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2362 {
2363         int i, j;
2364
2365         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2366
2367         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2368                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2369                 return 0;
2370
2371         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2372                                    GFP_KERNEL);
2373         if (!card->qdio.in_q)
2374                 goto out_nomem;
2375         QETH_DBF_TEXT(SETUP, 2, "inq");
2376         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2377         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2378         /* give inbound qeth_qdio_buffers their qdio_buffers */
2379         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2380                 card->qdio.in_q->bufs[i].buffer =
2381                         &card->qdio.in_q->qdio_bufs[i];
2382                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2383         }
2384         /* inbound buffer pool */
2385         if (qeth_alloc_buffer_pool(card))
2386                 goto out_freeinq;
2387
2388         /* outbound */
2389         card->qdio.out_qs =
2390                 kzalloc(card->qdio.no_out_queues *
2391                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2392         if (!card->qdio.out_qs)
2393                 goto out_freepool;
2394         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2395                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2396                                                GFP_KERNEL);
2397                 if (!card->qdio.out_qs[i])
2398                         goto out_freeoutq;
2399                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2400                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2401                 card->qdio.out_qs[i]->queue_no = i;
2402                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2403                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2404                         BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2405                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2406                                 goto out_freeoutqbufs;
2407                 }
2408         }
2409
2410         /* completion */
2411         if (qeth_alloc_cq(card))
2412                 goto out_freeoutq;
2413
2414         return 0;
2415
2416 out_freeoutqbufs:
2417         while (j > 0) {
2418                 --j;
2419                 kmem_cache_free(qeth_qdio_outbuf_cache,
2420                                 card->qdio.out_qs[i]->bufs[j]);
2421                 card->qdio.out_qs[i]->bufs[j] = NULL;
2422         }
2423 out_freeoutq:
2424         while (i > 0) {
2425                 kfree(card->qdio.out_qs[--i]);
2426                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2427         }
2428         kfree(card->qdio.out_qs);
2429         card->qdio.out_qs = NULL;
2430 out_freepool:
2431         qeth_free_buffer_pool(card);
2432 out_freeinq:
2433         kfree(card->qdio.in_q);
2434         card->qdio.in_q = NULL;
2435 out_nomem:
2436         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2437         return -ENOMEM;
2438 }
2439
2440 static void qeth_create_qib_param_field(struct qeth_card *card,
2441                 char *param_field)
2442 {
2443
2444         param_field[0] = _ascebc['P'];
2445         param_field[1] = _ascebc['C'];
2446         param_field[2] = _ascebc['I'];
2447         param_field[3] = _ascebc['T'];
2448         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2449         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2450         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2451 }
2452
2453 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2454                 char *param_field)
2455 {
2456         param_field[16] = _ascebc['B'];
2457         param_field[17] = _ascebc['L'];
2458         param_field[18] = _ascebc['K'];
2459         param_field[19] = _ascebc['T'];
2460         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2461         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2462         *((unsigned int *) (&param_field[28])) =
2463                 card->info.blkt.inter_packet_jumbo;
2464 }
2465
2466 static int qeth_qdio_activate(struct qeth_card *card)
2467 {
2468         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2469         return qdio_activate(CARD_DDEV(card));
2470 }
2471
2472 static int qeth_dm_act(struct qeth_card *card)
2473 {
2474         int rc;
2475         struct qeth_cmd_buffer *iob;
2476
2477         QETH_DBF_TEXT(SETUP, 2, "dmact");
2478
2479         iob = qeth_wait_for_buffer(&card->write);
2480         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2481
2482         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2483                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2484         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2485                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2486         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2487         return rc;
2488 }
2489
2490 static int qeth_mpc_initialize(struct qeth_card *card)
2491 {
2492         int rc;
2493
2494         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2495
2496         rc = qeth_issue_next_read(card);
2497         if (rc) {
2498                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2499                 return rc;
2500         }
2501         rc = qeth_cm_enable(card);
2502         if (rc) {
2503                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2504                 goto out_qdio;
2505         }
2506         rc = qeth_cm_setup(card);
2507         if (rc) {
2508                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2509                 goto out_qdio;
2510         }
2511         rc = qeth_ulp_enable(card);
2512         if (rc) {
2513                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2514                 goto out_qdio;
2515         }
2516         rc = qeth_ulp_setup(card);
2517         if (rc) {
2518                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2519                 goto out_qdio;
2520         }
2521         rc = qeth_alloc_qdio_buffers(card);
2522         if (rc) {
2523                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2524                 goto out_qdio;
2525         }
2526         rc = qeth_qdio_establish(card);
2527         if (rc) {
2528                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2529                 qeth_free_qdio_buffers(card);
2530                 goto out_qdio;
2531         }
2532         rc = qeth_qdio_activate(card);
2533         if (rc) {
2534                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2535                 goto out_qdio;
2536         }
2537         rc = qeth_dm_act(card);
2538         if (rc) {
2539                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2540                 goto out_qdio;
2541         }
2542
2543         return 0;
2544 out_qdio:
2545         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2546         return rc;
2547 }
2548
2549 static void qeth_print_status_with_portname(struct qeth_card *card)
2550 {
2551         char dbf_text[15];
2552         int i;
2553
2554         sprintf(dbf_text, "%s", card->info.portname + 1);
2555         for (i = 0; i < 8; i++)
2556                 dbf_text[i] =
2557                         (char) _ebcasc[(__u8) dbf_text[i]];
2558         dbf_text[8] = 0;
2559         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2560                "with link type %s (portname: %s)\n",
2561                qeth_get_cardname(card),
2562                (card->info.mcl_level[0]) ? " (level: " : "",
2563                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2564                (card->info.mcl_level[0]) ? ")" : "",
2565                qeth_get_cardname_short(card),
2566                dbf_text);
2567
2568 }
2569
2570 static void qeth_print_status_no_portname(struct qeth_card *card)
2571 {
2572         if (card->info.portname[0])
2573                 dev_info(&card->gdev->dev, "Device is a%s "
2574                        "card%s%s%s\nwith link type %s "
2575                        "(no portname needed by interface).\n",
2576                        qeth_get_cardname(card),
2577                        (card->info.mcl_level[0]) ? " (level: " : "",
2578                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2579                        (card->info.mcl_level[0]) ? ")" : "",
2580                        qeth_get_cardname_short(card));
2581         else
2582                 dev_info(&card->gdev->dev, "Device is a%s "
2583                        "card%s%s%s\nwith link type %s.\n",
2584                        qeth_get_cardname(card),
2585                        (card->info.mcl_level[0]) ? " (level: " : "",
2586                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2587                        (card->info.mcl_level[0]) ? ")" : "",
2588                        qeth_get_cardname_short(card));
2589 }
2590
2591 void qeth_print_status_message(struct qeth_card *card)
2592 {
2593         switch (card->info.type) {
2594         case QETH_CARD_TYPE_OSD:
2595         case QETH_CARD_TYPE_OSM:
2596         case QETH_CARD_TYPE_OSX:
2597                 /* VM will use a non-zero first character
2598                  * to indicate a HiperSockets like reporting
2599                  * of the level OSA sets the first character to zero
2600                  * */
2601                 if (!card->info.mcl_level[0]) {
2602                         sprintf(card->info.mcl_level, "%02x%02x",
2603                                 card->info.mcl_level[2],
2604                                 card->info.mcl_level[3]);
2605
2606                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2607                         break;
2608                 }
2609                 /* fallthrough */
2610         case QETH_CARD_TYPE_IQD:
2611                 if ((card->info.guestlan) ||
2612                     (card->info.mcl_level[0] & 0x80)) {
2613                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2614                                 card->info.mcl_level[0]];
2615                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2616                                 card->info.mcl_level[1]];
2617                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2618                                 card->info.mcl_level[2]];
2619                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2620                                 card->info.mcl_level[3]];
2621                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2622                 }
2623                 break;
2624         default:
2625                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2626         }
2627         if (card->info.portname_required)
2628                 qeth_print_status_with_portname(card);
2629         else
2630                 qeth_print_status_no_portname(card);
2631 }
2632 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2633
2634 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2635 {
2636         struct qeth_buffer_pool_entry *entry;
2637
2638         QETH_CARD_TEXT(card, 5, "inwrklst");
2639
2640         list_for_each_entry(entry,
2641                             &card->qdio.init_pool.entry_list, init_list) {
2642                 qeth_put_buffer_pool_entry(card, entry);
2643         }
2644 }
2645
2646 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2647                 struct qeth_card *card)
2648 {
2649         struct list_head *plh;
2650         struct qeth_buffer_pool_entry *entry;
2651         int i, free;
2652         struct page *page;
2653
2654         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2655                 return NULL;
2656
2657         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2658                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2659                 free = 1;
2660                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2661                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2662                                 free = 0;
2663                                 break;
2664                         }
2665                 }
2666                 if (free) {
2667                         list_del_init(&entry->list);
2668                         return entry;
2669                 }
2670         }
2671
2672         /* no free buffer in pool so take first one and swap pages */
2673         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2674                         struct qeth_buffer_pool_entry, list);
2675         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2676                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2677                         page = alloc_page(GFP_ATOMIC);
2678                         if (!page) {
2679                                 return NULL;
2680                         } else {
2681                                 free_page((unsigned long)entry->elements[i]);
2682                                 entry->elements[i] = page_address(page);
2683                                 if (card->options.performance_stats)
2684                                         card->perf_stats.sg_alloc_page_rx++;
2685                         }
2686                 }
2687         }
2688         list_del_init(&entry->list);
2689         return entry;
2690 }
2691
2692 static int qeth_init_input_buffer(struct qeth_card *card,
2693                 struct qeth_qdio_buffer *buf)
2694 {
2695         struct qeth_buffer_pool_entry *pool_entry;
2696         int i;
2697
2698         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2699                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2700                 if (!buf->rx_skb)
2701                         return 1;
2702         }
2703
2704         pool_entry = qeth_find_free_buffer_pool_entry(card);
2705         if (!pool_entry)
2706                 return 1;
2707
2708         /*
2709          * since the buffer is accessed only from the input_tasklet
2710          * there shouldn't be a need to synchronize; also, since we use
2711          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2712          * buffers
2713          */
2714
2715         buf->pool_entry = pool_entry;
2716         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2717                 buf->buffer->element[i].length = PAGE_SIZE;
2718                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2719                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2720                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2721                 else
2722                         buf->buffer->element[i].eflags = 0;
2723                 buf->buffer->element[i].sflags = 0;
2724         }
2725         return 0;
2726 }
2727
2728 int qeth_init_qdio_queues(struct qeth_card *card)
2729 {
2730         int i, j;
2731         int rc;
2732
2733         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2734
2735         /* inbound queue */
2736         memset(card->qdio.in_q->qdio_bufs, 0,
2737                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2738         qeth_initialize_working_pool_list(card);
2739         /*give only as many buffers to hardware as we have buffer pool entries*/
2740         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2741                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2742         card->qdio.in_q->next_buf_to_init =
2743                 card->qdio.in_buf_pool.buf_count - 1;
2744         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2745                      card->qdio.in_buf_pool.buf_count - 1);
2746         if (rc) {
2747                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2748                 return rc;
2749         }
2750
2751         /* completion */
2752         rc = qeth_cq_init(card);
2753         if (rc) {
2754                 return rc;
2755         }
2756
2757         /* outbound queue */
2758         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2759                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2760                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2761                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2762                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2763                                         card->qdio.out_qs[i]->bufs[j],
2764                                         QETH_QDIO_BUF_EMPTY);
2765                 }
2766                 card->qdio.out_qs[i]->card = card;
2767                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2768                 card->qdio.out_qs[i]->do_pack = 0;
2769                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2770                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2771                 atomic_set(&card->qdio.out_qs[i]->state,
2772                            QETH_OUT_Q_UNLOCKED);
2773         }
2774         return 0;
2775 }
2776 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2777
2778 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2779 {
2780         switch (link_type) {
2781         case QETH_LINK_TYPE_HSTR:
2782                 return 2;
2783         default:
2784                 return 1;
2785         }
2786 }
2787
2788 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2789                 struct qeth_ipa_cmd *cmd, __u8 command,
2790                 enum qeth_prot_versions prot)
2791 {
2792         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2793         cmd->hdr.command = command;
2794         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2795         cmd->hdr.seqno = card->seqno.ipa;
2796         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2797         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2798         if (card->options.layer2)
2799                 cmd->hdr.prim_version_no = 2;
2800         else
2801                 cmd->hdr.prim_version_no = 1;
2802         cmd->hdr.param_count = 1;
2803         cmd->hdr.prot_version = prot;
2804         cmd->hdr.ipa_supported = 0;
2805         cmd->hdr.ipa_enabled = 0;
2806 }
2807
2808 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2809                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2810 {
2811         struct qeth_cmd_buffer *iob;
2812         struct qeth_ipa_cmd *cmd;
2813
2814         iob = qeth_wait_for_buffer(&card->write);
2815         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2816         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2817
2818         return iob;
2819 }
2820 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2821
2822 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2823                 char prot_type)
2824 {
2825         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2826         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2827         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2828                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2829 }
2830 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2831
2832 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2833                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2834                         unsigned long),
2835                 void *reply_param)
2836 {
2837         int rc;
2838         char prot_type;
2839
2840         QETH_CARD_TEXT(card, 4, "sendipa");
2841
2842         if (card->options.layer2)
2843                 if (card->info.type == QETH_CARD_TYPE_OSN)
2844                         prot_type = QETH_PROT_OSN2;
2845                 else
2846                         prot_type = QETH_PROT_LAYER2;
2847         else
2848                 prot_type = QETH_PROT_TCPIP;
2849         qeth_prepare_ipa_cmd(card, iob, prot_type);
2850         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2851                                                 iob, reply_cb, reply_param);
2852         if (rc == -ETIME) {
2853                 qeth_clear_ipacmd_list(card);
2854                 qeth_schedule_recovery(card);
2855         }
2856         return rc;
2857 }
2858 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2859
2860 int qeth_send_startlan(struct qeth_card *card)
2861 {
2862         int rc;
2863         struct qeth_cmd_buffer *iob;
2864
2865         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2866
2867         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2868         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2869         return rc;
2870 }
2871 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2872
2873 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2874                 struct qeth_reply *reply, unsigned long data)
2875 {
2876         struct qeth_ipa_cmd *cmd;
2877
2878         QETH_CARD_TEXT(card, 4, "defadpcb");
2879
2880         cmd = (struct qeth_ipa_cmd *) data;
2881         if (cmd->hdr.return_code == 0)
2882                 cmd->hdr.return_code =
2883                         cmd->data.setadapterparms.hdr.return_code;
2884         return 0;
2885 }
2886 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2887
2888 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2889                 struct qeth_reply *reply, unsigned long data)
2890 {
2891         struct qeth_ipa_cmd *cmd;
2892
2893         QETH_CARD_TEXT(card, 3, "quyadpcb");
2894
2895         cmd = (struct qeth_ipa_cmd *) data;
2896         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2897                 card->info.link_type =
2898                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2899                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2900         }
2901         card->options.adp.supported_funcs =
2902                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2903         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2904 }
2905
2906 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2907                 __u32 command, __u32 cmdlen)
2908 {
2909         struct qeth_cmd_buffer *iob;
2910         struct qeth_ipa_cmd *cmd;
2911
2912         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2913                                      QETH_PROT_IPV4);
2914         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2915         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2916         cmd->data.setadapterparms.hdr.command_code = command;
2917         cmd->data.setadapterparms.hdr.used_total = 1;
2918         cmd->data.setadapterparms.hdr.seq_no = 1;
2919
2920         return iob;
2921 }
2922 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2923
2924 int qeth_query_setadapterparms(struct qeth_card *card)
2925 {
2926         int rc;
2927         struct qeth_cmd_buffer *iob;
2928
2929         QETH_CARD_TEXT(card, 3, "queryadp");
2930         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2931                                    sizeof(struct qeth_ipacmd_setadpparms));
2932         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2933         return rc;
2934 }
2935 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2936
2937 static int qeth_query_ipassists_cb(struct qeth_card *card,
2938                 struct qeth_reply *reply, unsigned long data)
2939 {
2940         struct qeth_ipa_cmd *cmd;
2941
2942         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2943
2944         cmd = (struct qeth_ipa_cmd *) data;
2945         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2946                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2947                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2948         } else {
2949                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2950                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2951         }
2952         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2953         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
2954         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2955         return 0;
2956 }
2957
2958 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2959 {
2960         int rc;
2961         struct qeth_cmd_buffer *iob;
2962
2963         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2964         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2965         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2966         return rc;
2967 }
2968 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2969
2970 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2971                 struct qeth_reply *reply, unsigned long data)
2972 {
2973         struct qeth_ipa_cmd *cmd;
2974         __u16 rc;
2975
2976         cmd = (struct qeth_ipa_cmd *)data;
2977         rc = cmd->hdr.return_code;
2978         if (rc)
2979                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2980         else
2981                 card->info.diagass_support = cmd->data.diagass.ext;
2982         return 0;
2983 }
2984
2985 static int qeth_query_setdiagass(struct qeth_card *card)
2986 {
2987         struct qeth_cmd_buffer *iob;
2988         struct qeth_ipa_cmd    *cmd;
2989
2990         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2991         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2992         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2993         cmd->data.diagass.subcmd_len = 16;
2994         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2995         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2996 }
2997
2998 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2999 {
3000         unsigned long info = get_zeroed_page(GFP_KERNEL);
3001         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3002         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3003         struct ccw_dev_id ccwid;
3004         int level;
3005
3006         tid->chpid = card->info.chpid;
3007         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3008         tid->ssid = ccwid.ssid;
3009         tid->devno = ccwid.devno;
3010         if (!info)
3011                 return;
3012         level = stsi(NULL, 0, 0, 0);
3013         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3014                 tid->lparnr = info222->lpar_number;
3015         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
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 == -ENOBUFS)
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_FATAL) {
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 = IPA_RC_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         if (ddev_offline)
4542                 qeth_configure_blkt_default(card, prcd);
4543         kfree(prcd);
4544
4545         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4546         if (rc)
4547                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4548
4549         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4550         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4551         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4552         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4553         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4554             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4555             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4556                 dev_info(&card->gdev->dev,
4557                         "Completion Queueing supported\n");
4558         } else {
4559                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4560         }
4561
4562
4563 out_offline:
4564         if (ddev_offline == 1)
4565                 ccw_device_set_offline(ddev);
4566 out:
4567         return;
4568 }
4569
4570 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4571         struct qdio_buffer **in_sbal_ptrs,
4572         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4573         int i;
4574
4575         if (card->options.cq == QETH_CQ_ENABLED) {
4576                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4577                              (card->qdio.no_in_queues - 1);
4578                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4579                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4580                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4581                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4582                 }
4583
4584                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4585         }
4586 }
4587
4588 static int qeth_qdio_establish(struct qeth_card *card)
4589 {
4590         struct qdio_initialize init_data;
4591         char *qib_param_field;
4592         struct qdio_buffer **in_sbal_ptrs;
4593         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4594         struct qdio_buffer **out_sbal_ptrs;
4595         int i, j, k;
4596         int rc = 0;
4597
4598         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4599
4600         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4601                               GFP_KERNEL);
4602         if (!qib_param_field) {
4603                 rc =  -ENOMEM;
4604                 goto out_free_nothing;
4605         }
4606
4607         qeth_create_qib_param_field(card, qib_param_field);
4608         qeth_create_qib_param_field_blkt(card, qib_param_field);
4609
4610         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4611                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4612                                GFP_KERNEL);
4613         if (!in_sbal_ptrs) {
4614                 rc = -ENOMEM;
4615                 goto out_free_qib_param;
4616         }
4617         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4618                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4619                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4620         }
4621
4622         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4623                                    GFP_KERNEL);
4624         if (!queue_start_poll) {
4625                 rc = -ENOMEM;
4626                 goto out_free_in_sbals;
4627         }
4628         for (i = 0; i < card->qdio.no_in_queues; ++i)
4629                 queue_start_poll[i] = card->discipline->start_poll;
4630
4631         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4632
4633         out_sbal_ptrs =
4634                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4635                         sizeof(void *), GFP_KERNEL);
4636         if (!out_sbal_ptrs) {
4637                 rc = -ENOMEM;
4638                 goto out_free_queue_start_poll;
4639         }
4640         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4641                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4642                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4643                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4644                 }
4645
4646         memset(&init_data, 0, sizeof(struct qdio_initialize));
4647         init_data.cdev                   = CARD_DDEV(card);
4648         init_data.q_format               = qeth_get_qdio_q_format(card);
4649         init_data.qib_param_field_format = 0;
4650         init_data.qib_param_field        = qib_param_field;
4651         init_data.no_input_qs            = card->qdio.no_in_queues;
4652         init_data.no_output_qs           = card->qdio.no_out_queues;
4653         init_data.input_handler          = card->discipline->input_handler;
4654         init_data.output_handler         = card->discipline->output_handler;
4655         init_data.queue_start_poll_array = queue_start_poll;
4656         init_data.int_parm               = (unsigned long) card;
4657         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4658         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4659         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4660         init_data.scan_threshold =
4661                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4662
4663         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4664                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4665                 rc = qdio_allocate(&init_data);
4666                 if (rc) {
4667                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4668                         goto out;
4669                 }
4670                 rc = qdio_establish(&init_data);
4671                 if (rc) {
4672                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4673                         qdio_free(CARD_DDEV(card));
4674                 }
4675         }
4676
4677         switch (card->options.cq) {
4678         case QETH_CQ_ENABLED:
4679                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4680                 break;
4681         case QETH_CQ_DISABLED:
4682                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4683                 break;
4684         default:
4685                 break;
4686         }
4687 out:
4688         kfree(out_sbal_ptrs);
4689 out_free_queue_start_poll:
4690         kfree(queue_start_poll);
4691 out_free_in_sbals:
4692         kfree(in_sbal_ptrs);
4693 out_free_qib_param:
4694         kfree(qib_param_field);
4695 out_free_nothing:
4696         return rc;
4697 }
4698
4699 static void qeth_core_free_card(struct qeth_card *card)
4700 {
4701
4702         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4703         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4704         qeth_clean_channel(&card->read);
4705         qeth_clean_channel(&card->write);
4706         if (card->dev)
4707                 free_netdev(card->dev);
4708         kfree(card->ip_tbd_list);
4709         qeth_free_qdio_buffers(card);
4710         unregister_service_level(&card->qeth_service_level);
4711         kfree(card);
4712 }
4713
4714 static struct ccw_device_id qeth_ids[] = {
4715         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4716                                         .driver_info = QETH_CARD_TYPE_OSD},
4717         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4718                                         .driver_info = QETH_CARD_TYPE_IQD},
4719         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4720                                         .driver_info = QETH_CARD_TYPE_OSN},
4721         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4722                                         .driver_info = QETH_CARD_TYPE_OSM},
4723         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4724                                         .driver_info = QETH_CARD_TYPE_OSX},
4725         {},
4726 };
4727 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4728
4729 static struct ccw_driver qeth_ccw_driver = {
4730         .driver = {
4731                 .owner = THIS_MODULE,
4732                 .name = "qeth",
4733         },
4734         .ids = qeth_ids,
4735         .probe = ccwgroup_probe_ccwdev,
4736         .remove = ccwgroup_remove_ccwdev,
4737 };
4738
4739 int qeth_core_hardsetup_card(struct qeth_card *card)
4740 {
4741         int retries = 0;
4742         int rc;
4743
4744         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4745         atomic_set(&card->force_alloc_skb, 0);
4746         qeth_update_from_chp_desc(card);
4747 retry:
4748         if (retries)
4749                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4750                         dev_name(&card->gdev->dev));
4751         ccw_device_set_offline(CARD_DDEV(card));
4752         ccw_device_set_offline(CARD_WDEV(card));
4753         ccw_device_set_offline(CARD_RDEV(card));
4754         rc = ccw_device_set_online(CARD_RDEV(card));
4755         if (rc)
4756                 goto retriable;
4757         rc = ccw_device_set_online(CARD_WDEV(card));
4758         if (rc)
4759                 goto retriable;
4760         rc = ccw_device_set_online(CARD_DDEV(card));
4761         if (rc)
4762                 goto retriable;
4763         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4764 retriable:
4765         if (rc == -ERESTARTSYS) {
4766                 QETH_DBF_TEXT(SETUP, 2, "break1");
4767                 return rc;
4768         } else if (rc) {
4769                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4770                 if (++retries > 3)
4771                         goto out;
4772                 else
4773                         goto retry;
4774         }
4775         qeth_determine_capabilities(card);
4776         qeth_init_tokens(card);
4777         qeth_init_func_level(card);
4778         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4779         if (rc == -ERESTARTSYS) {
4780                 QETH_DBF_TEXT(SETUP, 2, "break2");
4781                 return rc;
4782         } else if (rc) {
4783                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4784                 if (--retries < 0)
4785                         goto out;
4786                 else
4787                         goto retry;
4788         }
4789         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4790         if (rc == -ERESTARTSYS) {
4791                 QETH_DBF_TEXT(SETUP, 2, "break3");
4792                 return rc;
4793         } else if (rc) {
4794                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4795                 if (--retries < 0)
4796                         goto out;
4797                 else
4798                         goto retry;
4799         }
4800         card->read_or_write_problem = 0;
4801         rc = qeth_mpc_initialize(card);
4802         if (rc) {
4803                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4804                 goto out;
4805         }
4806
4807         card->options.ipa4.supported_funcs = 0;
4808         card->options.adp.supported_funcs = 0;
4809         card->info.diagass_support = 0;
4810         qeth_query_ipassists(card, QETH_PROT_IPV4);
4811         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4812                 qeth_query_setadapterparms(card);
4813         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4814                 qeth_query_setdiagass(card);
4815         return 0;
4816 out:
4817         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4818                 "an error on the device\n");
4819         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4820                 dev_name(&card->gdev->dev), rc);
4821         return rc;
4822 }
4823 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4824
4825 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4826                 struct qdio_buffer_element *element,
4827                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4828 {
4829         struct page *page = virt_to_page(element->addr);
4830         if (*pskb == NULL) {
4831                 if (qethbuffer->rx_skb) {
4832                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4833                         *pskb = qethbuffer->rx_skb;
4834                         qethbuffer->rx_skb = NULL;
4835                 } else {
4836                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4837                         if (!(*pskb))
4838                                 return -ENOMEM;
4839                 }
4840
4841                 skb_reserve(*pskb, ETH_HLEN);
4842                 if (data_len <= QETH_RX_PULL_LEN) {
4843                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4844                                 data_len);
4845                 } else {
4846                         get_page(page);
4847                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4848                                element->addr + offset, QETH_RX_PULL_LEN);
4849                         skb_fill_page_desc(*pskb, *pfrag, page,
4850                                 offset + QETH_RX_PULL_LEN,
4851                                 data_len - QETH_RX_PULL_LEN);
4852                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4853                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4854                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4855                         (*pfrag)++;
4856                 }
4857         } else {
4858                 get_page(page);
4859                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4860                 (*pskb)->data_len += data_len;
4861                 (*pskb)->len      += data_len;
4862                 (*pskb)->truesize += data_len;
4863                 (*pfrag)++;
4864         }
4865
4866
4867         return 0;
4868 }
4869
4870 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4871                 struct qeth_qdio_buffer *qethbuffer,
4872                 struct qdio_buffer_element **__element, int *__offset,
4873                 struct qeth_hdr **hdr)
4874 {
4875         struct qdio_buffer_element *element = *__element;
4876         struct qdio_buffer *buffer = qethbuffer->buffer;
4877         int offset = *__offset;
4878         struct sk_buff *skb = NULL;
4879         int skb_len = 0;
4880         void *data_ptr;
4881         int data_len;
4882         int headroom = 0;
4883         int use_rx_sg = 0;
4884         int frag = 0;
4885
4886         /* qeth_hdr must not cross element boundaries */
4887         if (element->length < offset + sizeof(struct qeth_hdr)) {
4888                 if (qeth_is_last_sbale(element))
4889                         return NULL;
4890                 element++;
4891                 offset = 0;
4892                 if (element->length < sizeof(struct qeth_hdr))
4893                         return NULL;
4894         }
4895         *hdr = element->addr + offset;
4896
4897         offset += sizeof(struct qeth_hdr);
4898         switch ((*hdr)->hdr.l2.id) {
4899         case QETH_HEADER_TYPE_LAYER2:
4900                 skb_len = (*hdr)->hdr.l2.pkt_length;
4901                 break;
4902         case QETH_HEADER_TYPE_LAYER3:
4903                 skb_len = (*hdr)->hdr.l3.length;
4904                 headroom = ETH_HLEN;
4905                 break;
4906         case QETH_HEADER_TYPE_OSN:
4907                 skb_len = (*hdr)->hdr.osn.pdu_length;
4908                 headroom = sizeof(struct qeth_hdr);
4909                 break;
4910         default:
4911                 break;
4912         }
4913
4914         if (!skb_len)
4915                 return NULL;
4916
4917         if (((skb_len >= card->options.rx_sg_cb) &&
4918              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4919              (!atomic_read(&card->force_alloc_skb))) ||
4920             (card->options.cq == QETH_CQ_ENABLED)) {
4921                 use_rx_sg = 1;
4922         } else {
4923                 skb = dev_alloc_skb(skb_len + headroom);
4924                 if (!skb)
4925                         goto no_mem;
4926                 if (headroom)
4927                         skb_reserve(skb, headroom);
4928         }
4929
4930         data_ptr = element->addr + offset;
4931         while (skb_len) {
4932                 data_len = min(skb_len, (int)(element->length - offset));
4933                 if (data_len) {
4934                         if (use_rx_sg) {
4935                                 if (qeth_create_skb_frag(qethbuffer, element,
4936                                     &skb, offset, &frag, data_len))
4937                                         goto no_mem;
4938                         } else {
4939                                 memcpy(skb_put(skb, data_len), data_ptr,
4940                                         data_len);
4941                         }
4942                 }
4943                 skb_len -= data_len;
4944                 if (skb_len) {
4945                         if (qeth_is_last_sbale(element)) {
4946                                 QETH_CARD_TEXT(card, 4, "unexeob");
4947                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4948                                 dev_kfree_skb_any(skb);
4949                                 card->stats.rx_errors++;
4950                                 return NULL;
4951                         }
4952                         element++;
4953                         offset = 0;
4954                         data_ptr = element->addr;
4955                 } else {
4956                         offset += data_len;
4957                 }
4958         }
4959         *__element = element;
4960         *__offset = offset;
4961         if (use_rx_sg && card->options.performance_stats) {
4962                 card->perf_stats.sg_skbs_rx++;
4963                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4964         }
4965         return skb;
4966 no_mem:
4967         if (net_ratelimit()) {
4968                 QETH_CARD_TEXT(card, 2, "noskbmem");
4969         }
4970         card->stats.rx_dropped++;
4971         return NULL;
4972 }
4973 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4974
4975 static void qeth_unregister_dbf_views(void)
4976 {
4977         int x;
4978         for (x = 0; x < QETH_DBF_INFOS; x++) {
4979                 debug_unregister(qeth_dbf[x].id);
4980                 qeth_dbf[x].id = NULL;
4981         }
4982 }
4983
4984 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4985 {
4986         char dbf_txt_buf[32];
4987         va_list args;
4988
4989         if (level > id->level)
4990                 return;
4991         va_start(args, fmt);
4992         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4993         va_end(args);
4994         debug_text_event(id, level, dbf_txt_buf);
4995 }
4996 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4997
4998 static int qeth_register_dbf_views(void)
4999 {
5000         int ret;
5001         int x;
5002
5003         for (x = 0; x < QETH_DBF_INFOS; x++) {
5004                 /* register the areas */
5005                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5006                                                 qeth_dbf[x].pages,
5007                                                 qeth_dbf[x].areas,
5008                                                 qeth_dbf[x].len);
5009                 if (qeth_dbf[x].id == NULL) {
5010                         qeth_unregister_dbf_views();
5011                         return -ENOMEM;
5012                 }
5013
5014                 /* register a view */
5015                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5016                 if (ret) {
5017                         qeth_unregister_dbf_views();
5018                         return ret;
5019                 }
5020
5021                 /* set a passing level */
5022                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5023         }
5024
5025         return 0;
5026 }
5027
5028 int qeth_core_load_discipline(struct qeth_card *card,
5029                 enum qeth_discipline_id discipline)
5030 {
5031         int rc = 0;
5032         mutex_lock(&qeth_mod_mutex);
5033         switch (discipline) {
5034         case QETH_DISCIPLINE_LAYER3:
5035                 card->discipline = try_then_request_module(
5036                         symbol_get(qeth_l3_discipline), "qeth_l3");
5037                 break;
5038         case QETH_DISCIPLINE_LAYER2:
5039                 card->discipline = try_then_request_module(
5040                         symbol_get(qeth_l2_discipline), "qeth_l2");
5041                 break;
5042         }
5043         if (!card->discipline) {
5044                 dev_err(&card->gdev->dev, "There is no kernel module to "
5045                         "support discipline %d\n", discipline);
5046                 rc = -EINVAL;
5047         }
5048         mutex_unlock(&qeth_mod_mutex);
5049         return rc;
5050 }
5051
5052 void qeth_core_free_discipline(struct qeth_card *card)
5053 {
5054         if (card->options.layer2)
5055                 symbol_put(qeth_l2_discipline);
5056         else
5057                 symbol_put(qeth_l3_discipline);
5058         card->discipline = NULL;
5059 }
5060
5061 static const struct device_type qeth_generic_devtype = {
5062         .name = "qeth_generic",
5063         .groups = qeth_generic_attr_groups,
5064 };
5065 static const struct device_type qeth_osn_devtype = {
5066         .name = "qeth_osn",
5067         .groups = qeth_osn_attr_groups,
5068 };
5069
5070 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5071 {
5072         struct qeth_card *card;
5073         struct device *dev;
5074         int rc;
5075         unsigned long flags;
5076         char dbf_name[20];
5077
5078         QETH_DBF_TEXT(SETUP, 2, "probedev");
5079
5080         dev = &gdev->dev;
5081         if (!get_device(dev))
5082                 return -ENODEV;
5083
5084         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5085
5086         card = qeth_alloc_card();
5087         if (!card) {
5088                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5089                 rc = -ENOMEM;
5090                 goto err_dev;
5091         }
5092
5093         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5094                 dev_name(&gdev->dev));
5095         card->debug = debug_register(dbf_name, 2, 1, 8);
5096         if (!card->debug) {
5097                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5098                 rc = -ENOMEM;
5099                 goto err_card;
5100         }
5101         debug_register_view(card->debug, &debug_hex_ascii_view);
5102
5103         card->read.ccwdev  = gdev->cdev[0];
5104         card->write.ccwdev = gdev->cdev[1];
5105         card->data.ccwdev  = gdev->cdev[2];
5106         dev_set_drvdata(&gdev->dev, card);
5107         card->gdev = gdev;
5108         gdev->cdev[0]->handler = qeth_irq;
5109         gdev->cdev[1]->handler = qeth_irq;
5110         gdev->cdev[2]->handler = qeth_irq;
5111
5112         rc = qeth_determine_card_type(card);
5113         if (rc) {
5114                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5115                 goto err_dbf;
5116         }
5117         rc = qeth_setup_card(card);
5118         if (rc) {
5119                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5120                 goto err_dbf;
5121         }
5122
5123         if (card->info.type == QETH_CARD_TYPE_OSN)
5124                 gdev->dev.type = &qeth_osn_devtype;
5125         else
5126                 gdev->dev.type = &qeth_generic_devtype;
5127
5128         switch (card->info.type) {
5129         case QETH_CARD_TYPE_OSN:
5130         case QETH_CARD_TYPE_OSM:
5131                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5132                 if (rc)
5133                         goto err_dbf;
5134                 rc = card->discipline->setup(card->gdev);
5135                 if (rc)
5136                         goto err_disc;
5137         case QETH_CARD_TYPE_OSD:
5138         case QETH_CARD_TYPE_OSX:
5139         default:
5140                 break;
5141         }
5142
5143         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5144         list_add_tail(&card->list, &qeth_core_card_list.list);
5145         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5146
5147         qeth_determine_capabilities(card);
5148         return 0;
5149
5150 err_disc:
5151         qeth_core_free_discipline(card);
5152 err_dbf:
5153         debug_unregister(card->debug);
5154 err_card:
5155         qeth_core_free_card(card);
5156 err_dev:
5157         put_device(dev);
5158         return rc;
5159 }
5160
5161 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5162 {
5163         unsigned long flags;
5164         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5165
5166         QETH_DBF_TEXT(SETUP, 2, "removedv");
5167
5168         if (card->discipline) {
5169                 card->discipline->remove(gdev);
5170                 qeth_core_free_discipline(card);
5171         }
5172
5173         debug_unregister(card->debug);
5174         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5175         list_del(&card->list);
5176         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5177         qeth_core_free_card(card);
5178         dev_set_drvdata(&gdev->dev, NULL);
5179         put_device(&gdev->dev);
5180         return;
5181 }
5182
5183 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5184 {
5185         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5186         int rc = 0;
5187         int def_discipline;
5188
5189         if (!card->discipline) {
5190                 if (card->info.type == QETH_CARD_TYPE_IQD)
5191                         def_discipline = QETH_DISCIPLINE_LAYER3;
5192                 else
5193                         def_discipline = QETH_DISCIPLINE_LAYER2;
5194                 rc = qeth_core_load_discipline(card, def_discipline);
5195                 if (rc)
5196                         goto err;
5197                 rc = card->discipline->setup(card->gdev);
5198                 if (rc)
5199                         goto err;
5200         }
5201         rc = card->discipline->set_online(gdev);
5202 err:
5203         return rc;
5204 }
5205
5206 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5207 {
5208         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5209         return card->discipline->set_offline(gdev);
5210 }
5211
5212 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5213 {
5214         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5215         if (card->discipline && card->discipline->shutdown)
5216                 card->discipline->shutdown(gdev);
5217 }
5218
5219 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5220 {
5221         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5222         if (card->discipline && card->discipline->prepare)
5223                 return card->discipline->prepare(gdev);
5224         return 0;
5225 }
5226
5227 static void qeth_core_complete(struct ccwgroup_device *gdev)
5228 {
5229         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5230         if (card->discipline && card->discipline->complete)
5231                 card->discipline->complete(gdev);
5232 }
5233
5234 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5235 {
5236         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5237         if (card->discipline && card->discipline->freeze)
5238                 return card->discipline->freeze(gdev);
5239         return 0;
5240 }
5241
5242 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5243 {
5244         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5245         if (card->discipline && card->discipline->thaw)
5246                 return card->discipline->thaw(gdev);
5247         return 0;
5248 }
5249
5250 static int qeth_core_restore(struct ccwgroup_device *gdev)
5251 {
5252         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5253         if (card->discipline && card->discipline->restore)
5254                 return card->discipline->restore(gdev);
5255         return 0;
5256 }
5257
5258 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5259         .driver = {
5260                 .owner = THIS_MODULE,
5261                 .name = "qeth",
5262         },
5263         .setup = qeth_core_probe_device,
5264         .remove = qeth_core_remove_device,
5265         .set_online = qeth_core_set_online,
5266         .set_offline = qeth_core_set_offline,
5267         .shutdown = qeth_core_shutdown,
5268         .prepare = qeth_core_prepare,
5269         .complete = qeth_core_complete,
5270         .freeze = qeth_core_freeze,
5271         .thaw = qeth_core_thaw,
5272         .restore = qeth_core_restore,
5273 };
5274
5275 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5276                                             const char *buf, size_t count)
5277 {
5278         int err;
5279
5280         err = ccwgroup_create_dev(qeth_core_root_dev,
5281                                   &qeth_core_ccwgroup_driver, 3, buf);
5282
5283         return err ? err : count;
5284 }
5285 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5286
5287 static struct attribute *qeth_drv_attrs[] = {
5288         &driver_attr_group.attr,
5289         NULL,
5290 };
5291 static struct attribute_group qeth_drv_attr_group = {
5292         .attrs = qeth_drv_attrs,
5293 };
5294 static const struct attribute_group *qeth_drv_attr_groups[] = {
5295         &qeth_drv_attr_group,
5296         NULL,
5297 };
5298
5299 static struct {
5300         const char str[ETH_GSTRING_LEN];
5301 } qeth_ethtool_stats_keys[] = {
5302 /*  0 */{"rx skbs"},
5303         {"rx buffers"},
5304         {"tx skbs"},
5305         {"tx buffers"},
5306         {"tx skbs no packing"},
5307         {"tx buffers no packing"},
5308         {"tx skbs packing"},
5309         {"tx buffers packing"},
5310         {"tx sg skbs"},
5311         {"tx sg frags"},
5312 /* 10 */{"rx sg skbs"},
5313         {"rx sg frags"},
5314         {"rx sg page allocs"},
5315         {"tx large kbytes"},
5316         {"tx large count"},
5317         {"tx pk state ch n->p"},
5318         {"tx pk state ch p->n"},
5319         {"tx pk watermark low"},
5320         {"tx pk watermark high"},
5321         {"queue 0 buffer usage"},
5322 /* 20 */{"queue 1 buffer usage"},
5323         {"queue 2 buffer usage"},
5324         {"queue 3 buffer usage"},
5325         {"rx poll time"},
5326         {"rx poll count"},
5327         {"rx do_QDIO time"},
5328         {"rx do_QDIO count"},
5329         {"tx handler time"},
5330         {"tx handler count"},
5331         {"tx time"},
5332 /* 30 */{"tx count"},
5333         {"tx do_QDIO time"},
5334         {"tx do_QDIO count"},
5335         {"tx csum"},
5336         {"tx lin"},
5337         {"cq handler count"},
5338         {"cq handler time"}
5339 };
5340
5341 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5342 {
5343         switch (stringset) {
5344         case ETH_SS_STATS:
5345                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5346         default:
5347                 return -EINVAL;
5348         }
5349 }
5350 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5351
5352 void qeth_core_get_ethtool_stats(struct net_device *dev,
5353                 struct ethtool_stats *stats, u64 *data)
5354 {
5355         struct qeth_card *card = dev->ml_priv;
5356         data[0] = card->stats.rx_packets -
5357                                 card->perf_stats.initial_rx_packets;
5358         data[1] = card->perf_stats.bufs_rec;
5359         data[2] = card->stats.tx_packets -
5360                                 card->perf_stats.initial_tx_packets;
5361         data[3] = card->perf_stats.bufs_sent;
5362         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5363                         - card->perf_stats.skbs_sent_pack;
5364         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5365         data[6] = card->perf_stats.skbs_sent_pack;
5366         data[7] = card->perf_stats.bufs_sent_pack;
5367         data[8] = card->perf_stats.sg_skbs_sent;
5368         data[9] = card->perf_stats.sg_frags_sent;
5369         data[10] = card->perf_stats.sg_skbs_rx;
5370         data[11] = card->perf_stats.sg_frags_rx;
5371         data[12] = card->perf_stats.sg_alloc_page_rx;
5372         data[13] = (card->perf_stats.large_send_bytes >> 10);
5373         data[14] = card->perf_stats.large_send_cnt;
5374         data[15] = card->perf_stats.sc_dp_p;
5375         data[16] = card->perf_stats.sc_p_dp;
5376         data[17] = QETH_LOW_WATERMARK_PACK;
5377         data[18] = QETH_HIGH_WATERMARK_PACK;
5378         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5379         data[20] = (card->qdio.no_out_queues > 1) ?
5380                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5381         data[21] = (card->qdio.no_out_queues > 2) ?
5382                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5383         data[22] = (card->qdio.no_out_queues > 3) ?
5384                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5385         data[23] = card->perf_stats.inbound_time;
5386         data[24] = card->perf_stats.inbound_cnt;
5387         data[25] = card->perf_stats.inbound_do_qdio_time;
5388         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5389         data[27] = card->perf_stats.outbound_handler_time;
5390         data[28] = card->perf_stats.outbound_handler_cnt;
5391         data[29] = card->perf_stats.outbound_time;
5392         data[30] = card->perf_stats.outbound_cnt;
5393         data[31] = card->perf_stats.outbound_do_qdio_time;
5394         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5395         data[33] = card->perf_stats.tx_csum;
5396         data[34] = card->perf_stats.tx_lin;
5397         data[35] = card->perf_stats.cq_cnt;
5398         data[36] = card->perf_stats.cq_time;
5399 }
5400 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5401
5402 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5403 {
5404         switch (stringset) {
5405         case ETH_SS_STATS:
5406                 memcpy(data, &qeth_ethtool_stats_keys,
5407                         sizeof(qeth_ethtool_stats_keys));
5408                 break;
5409         default:
5410                 WARN_ON(1);
5411                 break;
5412         }
5413 }
5414 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5415
5416 void qeth_core_get_drvinfo(struct net_device *dev,
5417                 struct ethtool_drvinfo *info)
5418 {
5419         struct qeth_card *card = dev->ml_priv;
5420         if (card->options.layer2)
5421                 strcpy(info->driver, "qeth_l2");
5422         else
5423                 strcpy(info->driver, "qeth_l3");
5424
5425         strcpy(info->version, "1.0");
5426         strcpy(info->fw_version, card->info.mcl_level);
5427         sprintf(info->bus_info, "%s/%s/%s",
5428                         CARD_RDEV_ID(card),
5429                         CARD_WDEV_ID(card),
5430                         CARD_DDEV_ID(card));
5431 }
5432 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5433
5434 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5435                                         struct ethtool_cmd *ecmd)
5436 {
5437         struct qeth_card *card = netdev->ml_priv;
5438         enum qeth_link_types link_type;
5439
5440         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5441                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5442         else
5443                 link_type = card->info.link_type;
5444
5445         ecmd->transceiver = XCVR_INTERNAL;
5446         ecmd->supported = SUPPORTED_Autoneg;
5447         ecmd->advertising = ADVERTISED_Autoneg;
5448         ecmd->duplex = DUPLEX_FULL;
5449         ecmd->autoneg = AUTONEG_ENABLE;
5450
5451         switch (link_type) {
5452         case QETH_LINK_TYPE_FAST_ETH:
5453         case QETH_LINK_TYPE_LANE_ETH100:
5454                 ecmd->supported |= SUPPORTED_10baseT_Half |
5455                                         SUPPORTED_10baseT_Full |
5456                                         SUPPORTED_100baseT_Half |
5457                                         SUPPORTED_100baseT_Full |
5458                                         SUPPORTED_TP;
5459                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5460                                         ADVERTISED_10baseT_Full |
5461                                         ADVERTISED_100baseT_Half |
5462                                         ADVERTISED_100baseT_Full |
5463                                         ADVERTISED_TP;
5464                 ecmd->speed = SPEED_100;
5465                 ecmd->port = PORT_TP;
5466                 break;
5467
5468         case QETH_LINK_TYPE_GBIT_ETH:
5469         case QETH_LINK_TYPE_LANE_ETH1000:
5470                 ecmd->supported |= SUPPORTED_10baseT_Half |
5471                                         SUPPORTED_10baseT_Full |
5472                                         SUPPORTED_100baseT_Half |
5473                                         SUPPORTED_100baseT_Full |
5474                                         SUPPORTED_1000baseT_Half |
5475                                         SUPPORTED_1000baseT_Full |
5476                                         SUPPORTED_FIBRE;
5477                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5478                                         ADVERTISED_10baseT_Full |
5479                                         ADVERTISED_100baseT_Half |
5480                                         ADVERTISED_100baseT_Full |
5481                                         ADVERTISED_1000baseT_Half |
5482                                         ADVERTISED_1000baseT_Full |
5483                                         ADVERTISED_FIBRE;
5484                 ecmd->speed = SPEED_1000;
5485                 ecmd->port = PORT_FIBRE;
5486                 break;
5487
5488         case QETH_LINK_TYPE_10GBIT_ETH:
5489                 ecmd->supported |= SUPPORTED_10baseT_Half |
5490                                         SUPPORTED_10baseT_Full |
5491                                         SUPPORTED_100baseT_Half |
5492                                         SUPPORTED_100baseT_Full |
5493                                         SUPPORTED_1000baseT_Half |
5494                                         SUPPORTED_1000baseT_Full |
5495                                         SUPPORTED_10000baseT_Full |
5496                                         SUPPORTED_FIBRE;
5497                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5498                                         ADVERTISED_10baseT_Full |
5499                                         ADVERTISED_100baseT_Half |
5500                                         ADVERTISED_100baseT_Full |
5501                                         ADVERTISED_1000baseT_Half |
5502                                         ADVERTISED_1000baseT_Full |
5503                                         ADVERTISED_10000baseT_Full |
5504                                         ADVERTISED_FIBRE;
5505                 ecmd->speed = SPEED_10000;
5506                 ecmd->port = PORT_FIBRE;
5507                 break;
5508
5509         default:
5510                 ecmd->supported |= SUPPORTED_10baseT_Half |
5511                                         SUPPORTED_10baseT_Full |
5512                                         SUPPORTED_TP;
5513                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5514                                         ADVERTISED_10baseT_Full |
5515                                         ADVERTISED_TP;
5516                 ecmd->speed = SPEED_10;
5517                 ecmd->port = PORT_TP;
5518         }
5519
5520         return 0;
5521 }
5522 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5523
5524 static int __init qeth_core_init(void)
5525 {
5526         int rc;
5527
5528         pr_info("loading core functions\n");
5529         INIT_LIST_HEAD(&qeth_core_card_list.list);
5530         rwlock_init(&qeth_core_card_list.rwlock);
5531         mutex_init(&qeth_mod_mutex);
5532
5533         rc = qeth_register_dbf_views();
5534         if (rc)
5535                 goto out_err;
5536         qeth_core_root_dev = root_device_register("qeth");
5537         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5538         if (rc)
5539                 goto register_err;
5540         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5541                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5542         if (!qeth_core_header_cache) {
5543                 rc = -ENOMEM;
5544                 goto slab_err;
5545         }
5546         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5547                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5548         if (!qeth_qdio_outbuf_cache) {
5549                 rc = -ENOMEM;
5550                 goto cqslab_err;
5551         }
5552         rc = ccw_driver_register(&qeth_ccw_driver);
5553         if (rc)
5554                 goto ccw_err;
5555         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5556         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5557         if (rc)
5558                 goto ccwgroup_err;
5559
5560         return 0;
5561
5562 ccwgroup_err:
5563         ccw_driver_unregister(&qeth_ccw_driver);
5564 ccw_err:
5565         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5566 cqslab_err:
5567         kmem_cache_destroy(qeth_core_header_cache);
5568 slab_err:
5569         root_device_unregister(qeth_core_root_dev);
5570 register_err:
5571         qeth_unregister_dbf_views();
5572 out_err:
5573         pr_err("Initializing the qeth device driver failed\n");
5574         return rc;
5575 }
5576
5577 static void __exit qeth_core_exit(void)
5578 {
5579         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5580         ccw_driver_unregister(&qeth_ccw_driver);
5581         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5582         kmem_cache_destroy(qeth_core_header_cache);
5583         root_device_unregister(qeth_core_root_dev);
5584         qeth_unregister_dbf_views();
5585         pr_info("core functions removed\n");
5586 }
5587
5588 module_init(qeth_core_init);
5589 module_exit(qeth_core_exit);
5590 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5591 MODULE_DESCRIPTION("qeth core functions");
5592 MODULE_LICENSE("GPL");