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_get_channel_path_desc(struct qeth_card *card)
1261 {
1262         struct ccw_device *ccwdev;
1263         struct channelPath_dsc {
1264                 u8 flags;
1265                 u8 lsn;
1266                 u8 desc;
1267                 u8 chpid;
1268                 u8 swla;
1269                 u8 zeroes;
1270                 u8 chla;
1271                 u8 chpp;
1272         } *chp_dsc;
1273
1274         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1275
1276         ccwdev = card->data.ccwdev;
1277         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1278         if (chp_dsc != NULL) {
1279                 if (card->info.type != QETH_CARD_TYPE_IQD) {
1280                         /* CHPP field bit 6 == 1 -> single queue */
1281                         if ((chp_dsc->chpp & 0x02) == 0x02) {
1282                                 if ((atomic_read(&card->qdio.state) !=
1283                                         QETH_QDIO_UNINITIALIZED) &&
1284                                     (card->qdio.no_out_queues == 4))
1285                                         /* change from 4 to 1 outbound queues */
1286                                         qeth_free_qdio_buffers(card);
1287                                 card->qdio.no_out_queues = 1;
1288                                 if (card->qdio.default_out_queue != 0)
1289                                         dev_info(&card->gdev->dev,
1290                                         "Priority Queueing not supported\n");
1291                                 card->qdio.default_out_queue = 0;
1292                         } else {
1293                                 if ((atomic_read(&card->qdio.state) !=
1294                                         QETH_QDIO_UNINITIALIZED) &&
1295                                     (card->qdio.no_out_queues == 1)) {
1296                                         /* change from 1 to 4 outbound queues */
1297                                         qeth_free_qdio_buffers(card);
1298                                         card->qdio.default_out_queue = 2;
1299                                 }
1300                                 card->qdio.no_out_queues = 4;
1301                         }
1302                 }
1303                 card->info.func_level = 0x4100 + chp_dsc->desc;
1304                 kfree(chp_dsc);
1305         }
1306         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1307         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1308         return;
1309 }
1310
1311 static void qeth_init_qdio_info(struct qeth_card *card)
1312 {
1313         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1314         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1315         /* inbound */
1316         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1317         if (card->info.type == QETH_CARD_TYPE_IQD)
1318                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1319         else
1320                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1321         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1322         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1323         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1324 }
1325
1326 static void qeth_set_intial_options(struct qeth_card *card)
1327 {
1328         card->options.route4.type = NO_ROUTER;
1329         card->options.route6.type = NO_ROUTER;
1330         card->options.fake_broadcast = 0;
1331         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1332         card->options.performance_stats = 0;
1333         card->options.rx_sg_cb = QETH_RX_SG_CB;
1334         card->options.isolation = ISOLATION_MODE_NONE;
1335         card->options.cq = QETH_CQ_DISABLED;
1336 }
1337
1338 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1339 {
1340         unsigned long flags;
1341         int rc = 0;
1342
1343         spin_lock_irqsave(&card->thread_mask_lock, flags);
1344         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1345                         (u8) card->thread_start_mask,
1346                         (u8) card->thread_allowed_mask,
1347                         (u8) card->thread_running_mask);
1348         rc = (card->thread_start_mask & thread);
1349         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1350         return rc;
1351 }
1352
1353 static void qeth_start_kernel_thread(struct work_struct *work)
1354 {
1355         struct task_struct *ts;
1356         struct qeth_card *card = container_of(work, struct qeth_card,
1357                                         kernel_thread_starter);
1358         QETH_CARD_TEXT(card , 2, "strthrd");
1359
1360         if (card->read.state != CH_STATE_UP &&
1361             card->write.state != CH_STATE_UP)
1362                 return;
1363         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1364                 ts = kthread_run(card->discipline->recover, (void *)card,
1365                                 "qeth_recover");
1366                 if (IS_ERR(ts)) {
1367                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1368                         qeth_clear_thread_running_bit(card,
1369                                 QETH_RECOVER_THREAD);
1370                 }
1371         }
1372 }
1373
1374 static int qeth_setup_card(struct qeth_card *card)
1375 {
1376
1377         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1378         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1379
1380         card->read.state  = CH_STATE_DOWN;
1381         card->write.state = CH_STATE_DOWN;
1382         card->data.state  = CH_STATE_DOWN;
1383         card->state = CARD_STATE_DOWN;
1384         card->lan_online = 0;
1385         card->read_or_write_problem = 0;
1386         card->dev = NULL;
1387         spin_lock_init(&card->vlanlock);
1388         spin_lock_init(&card->mclock);
1389         spin_lock_init(&card->lock);
1390         spin_lock_init(&card->ip_lock);
1391         spin_lock_init(&card->thread_mask_lock);
1392         mutex_init(&card->conf_mutex);
1393         mutex_init(&card->discipline_mutex);
1394         card->thread_start_mask = 0;
1395         card->thread_allowed_mask = 0;
1396         card->thread_running_mask = 0;
1397         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1398         INIT_LIST_HEAD(&card->ip_list);
1399         INIT_LIST_HEAD(card->ip_tbd_list);
1400         INIT_LIST_HEAD(&card->cmd_waiter_list);
1401         init_waitqueue_head(&card->wait_q);
1402         /* initial options */
1403         qeth_set_intial_options(card);
1404         /* IP address takeover */
1405         INIT_LIST_HEAD(&card->ipato.entries);
1406         card->ipato.enabled = 0;
1407         card->ipato.invert4 = 0;
1408         card->ipato.invert6 = 0;
1409         /* init QDIO stuff */
1410         qeth_init_qdio_info(card);
1411         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1412         return 0;
1413 }
1414
1415 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1416 {
1417         struct qeth_card *card = container_of(slr, struct qeth_card,
1418                                         qeth_service_level);
1419         if (card->info.mcl_level[0])
1420                 seq_printf(m, "qeth: %s firmware level %s\n",
1421                         CARD_BUS_ID(card), card->info.mcl_level);
1422 }
1423
1424 static struct qeth_card *qeth_alloc_card(void)
1425 {
1426         struct qeth_card *card;
1427
1428         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1429         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1430         if (!card)
1431                 goto out;
1432         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1433         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1434         if (!card->ip_tbd_list) {
1435                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1436                 goto out_card;
1437         }
1438         if (qeth_setup_channel(&card->read))
1439                 goto out_ip;
1440         if (qeth_setup_channel(&card->write))
1441                 goto out_channel;
1442         card->options.layer2 = -1;
1443         card->qeth_service_level.seq_print = qeth_core_sl_print;
1444         register_service_level(&card->qeth_service_level);
1445         return card;
1446
1447 out_channel:
1448         qeth_clean_channel(&card->read);
1449 out_ip:
1450         kfree(card->ip_tbd_list);
1451 out_card:
1452         kfree(card);
1453 out:
1454         return NULL;
1455 }
1456
1457 static int qeth_determine_card_type(struct qeth_card *card)
1458 {
1459         int i = 0;
1460
1461         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1462
1463         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1464         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1465         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1466                 if ((CARD_RDEV(card)->id.dev_type ==
1467                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1468                     (CARD_RDEV(card)->id.dev_model ==
1469                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1470                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1471                         card->qdio.no_out_queues =
1472                                 known_devices[i][QETH_QUEUE_NO_IND];
1473                         card->qdio.no_in_queues = 1;
1474                         card->info.is_multicast_different =
1475                                 known_devices[i][QETH_MULTICAST_IND];
1476                         qeth_get_channel_path_desc(card);
1477                         return 0;
1478                 }
1479                 i++;
1480         }
1481         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1482         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1483                 "unknown type\n");
1484         return -ENOENT;
1485 }
1486
1487 static int qeth_clear_channel(struct qeth_channel *channel)
1488 {
1489         unsigned long flags;
1490         struct qeth_card *card;
1491         int rc;
1492
1493         card = CARD_FROM_CDEV(channel->ccwdev);
1494         QETH_CARD_TEXT(card, 3, "clearch");
1495         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1496         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1497         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1498
1499         if (rc)
1500                 return rc;
1501         rc = wait_event_interruptible_timeout(card->wait_q,
1502                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1503         if (rc == -ERESTARTSYS)
1504                 return rc;
1505         if (channel->state != CH_STATE_STOPPED)
1506                 return -ETIME;
1507         channel->state = CH_STATE_DOWN;
1508         return 0;
1509 }
1510
1511 static int qeth_halt_channel(struct qeth_channel *channel)
1512 {
1513         unsigned long flags;
1514         struct qeth_card *card;
1515         int rc;
1516
1517         card = CARD_FROM_CDEV(channel->ccwdev);
1518         QETH_CARD_TEXT(card, 3, "haltch");
1519         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1520         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1521         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1522
1523         if (rc)
1524                 return rc;
1525         rc = wait_event_interruptible_timeout(card->wait_q,
1526                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1527         if (rc == -ERESTARTSYS)
1528                 return rc;
1529         if (channel->state != CH_STATE_HALTED)
1530                 return -ETIME;
1531         return 0;
1532 }
1533
1534 static int qeth_halt_channels(struct qeth_card *card)
1535 {
1536         int rc1 = 0, rc2 = 0, rc3 = 0;
1537
1538         QETH_CARD_TEXT(card, 3, "haltchs");
1539         rc1 = qeth_halt_channel(&card->read);
1540         rc2 = qeth_halt_channel(&card->write);
1541         rc3 = qeth_halt_channel(&card->data);
1542         if (rc1)
1543                 return rc1;
1544         if (rc2)
1545                 return rc2;
1546         return rc3;
1547 }
1548
1549 static int qeth_clear_channels(struct qeth_card *card)
1550 {
1551         int rc1 = 0, rc2 = 0, rc3 = 0;
1552
1553         QETH_CARD_TEXT(card, 3, "clearchs");
1554         rc1 = qeth_clear_channel(&card->read);
1555         rc2 = qeth_clear_channel(&card->write);
1556         rc3 = qeth_clear_channel(&card->data);
1557         if (rc1)
1558                 return rc1;
1559         if (rc2)
1560                 return rc2;
1561         return rc3;
1562 }
1563
1564 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1565 {
1566         int rc = 0;
1567
1568         QETH_CARD_TEXT(card, 3, "clhacrd");
1569
1570         if (halt)
1571                 rc = qeth_halt_channels(card);
1572         if (rc)
1573                 return rc;
1574         return qeth_clear_channels(card);
1575 }
1576
1577 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1578 {
1579         int rc = 0;
1580
1581         QETH_CARD_TEXT(card, 3, "qdioclr");
1582         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1583                 QETH_QDIO_CLEANING)) {
1584         case QETH_QDIO_ESTABLISHED:
1585                 if (card->info.type == QETH_CARD_TYPE_IQD)
1586                         rc = qdio_shutdown(CARD_DDEV(card),
1587                                 QDIO_FLAG_CLEANUP_USING_HALT);
1588                 else
1589                         rc = qdio_shutdown(CARD_DDEV(card),
1590                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1591                 if (rc)
1592                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1593                 qdio_free(CARD_DDEV(card));
1594                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1595                 break;
1596         case QETH_QDIO_CLEANING:
1597                 return rc;
1598         default:
1599                 break;
1600         }
1601         rc = qeth_clear_halt_card(card, use_halt);
1602         if (rc)
1603                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1604         card->state = CARD_STATE_DOWN;
1605         return rc;
1606 }
1607 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1608
1609 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1610                                int *length)
1611 {
1612         struct ciw *ciw;
1613         char *rcd_buf;
1614         int ret;
1615         struct qeth_channel *channel = &card->data;
1616         unsigned long flags;
1617
1618         /*
1619          * scan for RCD command in extended SenseID data
1620          */
1621         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1622         if (!ciw || ciw->cmd == 0)
1623                 return -EOPNOTSUPP;
1624         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1625         if (!rcd_buf)
1626                 return -ENOMEM;
1627
1628         channel->ccw.cmd_code = ciw->cmd;
1629         channel->ccw.cda = (__u32) __pa(rcd_buf);
1630         channel->ccw.count = ciw->count;
1631         channel->ccw.flags = CCW_FLAG_SLI;
1632         channel->state = CH_STATE_RCD;
1633         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1634         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1635                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1636                                        QETH_RCD_TIMEOUT);
1637         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1638         if (!ret)
1639                 wait_event(card->wait_q,
1640                            (channel->state == CH_STATE_RCD_DONE ||
1641                             channel->state == CH_STATE_DOWN));
1642         if (channel->state == CH_STATE_DOWN)
1643                 ret = -EIO;
1644         else
1645                 channel->state = CH_STATE_DOWN;
1646         if (ret) {
1647                 kfree(rcd_buf);
1648                 *buffer = NULL;
1649                 *length = 0;
1650         } else {
1651                 *length = ciw->count;
1652                 *buffer = rcd_buf;
1653         }
1654         return ret;
1655 }
1656
1657 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1658 {
1659         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1660         card->info.chpid = prcd[30];
1661         card->info.unit_addr2 = prcd[31];
1662         card->info.cula = prcd[63];
1663         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1664                                (prcd[0x11] == _ascebc['M']));
1665 }
1666
1667 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1668 {
1669         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1670
1671         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1672             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1673                 card->info.blkt.time_total = 250;
1674                 card->info.blkt.inter_packet = 5;
1675                 card->info.blkt.inter_packet_jumbo = 15;
1676         } else {
1677                 card->info.blkt.time_total = 0;
1678                 card->info.blkt.inter_packet = 0;
1679                 card->info.blkt.inter_packet_jumbo = 0;
1680         }
1681 }
1682
1683 static void qeth_init_tokens(struct qeth_card *card)
1684 {
1685         card->token.issuer_rm_w = 0x00010103UL;
1686         card->token.cm_filter_w = 0x00010108UL;
1687         card->token.cm_connection_w = 0x0001010aUL;
1688         card->token.ulp_filter_w = 0x0001010bUL;
1689         card->token.ulp_connection_w = 0x0001010dUL;
1690 }
1691
1692 static void qeth_init_func_level(struct qeth_card *card)
1693 {
1694         switch (card->info.type) {
1695         case QETH_CARD_TYPE_IQD:
1696                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1697                 break;
1698         case QETH_CARD_TYPE_OSD:
1699         case QETH_CARD_TYPE_OSN:
1700                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1701                 break;
1702         default:
1703                 break;
1704         }
1705 }
1706
1707 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1708                 void (*idx_reply_cb)(struct qeth_channel *,
1709                         struct qeth_cmd_buffer *))
1710 {
1711         struct qeth_cmd_buffer *iob;
1712         unsigned long flags;
1713         int rc;
1714         struct qeth_card *card;
1715
1716         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1717         card = CARD_FROM_CDEV(channel->ccwdev);
1718         iob = qeth_get_buffer(channel);
1719         iob->callback = idx_reply_cb;
1720         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1721         channel->ccw.count = QETH_BUFSIZE;
1722         channel->ccw.cda = (__u32) __pa(iob->data);
1723
1724         wait_event(card->wait_q,
1725                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1726         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1727         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1728         rc = ccw_device_start(channel->ccwdev,
1729                               &channel->ccw, (addr_t) iob, 0, 0);
1730         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1731
1732         if (rc) {
1733                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1734                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1735                 atomic_set(&channel->irq_pending, 0);
1736                 wake_up(&card->wait_q);
1737                 return rc;
1738         }
1739         rc = wait_event_interruptible_timeout(card->wait_q,
1740                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1741         if (rc == -ERESTARTSYS)
1742                 return rc;
1743         if (channel->state != CH_STATE_UP) {
1744                 rc = -ETIME;
1745                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1746                 qeth_clear_cmd_buffers(channel);
1747         } else
1748                 rc = 0;
1749         return rc;
1750 }
1751
1752 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1753                 void (*idx_reply_cb)(struct qeth_channel *,
1754                         struct qeth_cmd_buffer *))
1755 {
1756         struct qeth_card *card;
1757         struct qeth_cmd_buffer *iob;
1758         unsigned long flags;
1759         __u16 temp;
1760         __u8 tmp;
1761         int rc;
1762         struct ccw_dev_id temp_devid;
1763
1764         card = CARD_FROM_CDEV(channel->ccwdev);
1765
1766         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1767
1768         iob = qeth_get_buffer(channel);
1769         iob->callback = idx_reply_cb;
1770         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1771         channel->ccw.count = IDX_ACTIVATE_SIZE;
1772         channel->ccw.cda = (__u32) __pa(iob->data);
1773         if (channel == &card->write) {
1774                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1775                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1776                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1777                 card->seqno.trans_hdr++;
1778         } else {
1779                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1780                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1781                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1782         }
1783         tmp = ((__u8)card->info.portno) | 0x80;
1784         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1785         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1786                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1787         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1788                &card->info.func_level, sizeof(__u16));
1789         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1790         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1791         temp = (card->info.cula << 8) + card->info.unit_addr2;
1792         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1793
1794         wait_event(card->wait_q,
1795                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1796         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1797         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1798         rc = ccw_device_start(channel->ccwdev,
1799                               &channel->ccw, (addr_t) iob, 0, 0);
1800         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1801
1802         if (rc) {
1803                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1804                         rc);
1805                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1806                 atomic_set(&channel->irq_pending, 0);
1807                 wake_up(&card->wait_q);
1808                 return rc;
1809         }
1810         rc = wait_event_interruptible_timeout(card->wait_q,
1811                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1812         if (rc == -ERESTARTSYS)
1813                 return rc;
1814         if (channel->state != CH_STATE_ACTIVATING) {
1815                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1816                         " failed to recover an error on the device\n");
1817                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1818                         dev_name(&channel->ccwdev->dev));
1819                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1820                 qeth_clear_cmd_buffers(channel);
1821                 return -ETIME;
1822         }
1823         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1824 }
1825
1826 static int qeth_peer_func_level(int level)
1827 {
1828         if ((level & 0xff) == 8)
1829                 return (level & 0xff) + 0x400;
1830         if (((level >> 8) & 3) == 1)
1831                 return (level & 0xff) + 0x200;
1832         return level;
1833 }
1834
1835 static void qeth_idx_write_cb(struct qeth_channel *channel,
1836                 struct qeth_cmd_buffer *iob)
1837 {
1838         struct qeth_card *card;
1839         __u16 temp;
1840
1841         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1842
1843         if (channel->state == CH_STATE_DOWN) {
1844                 channel->state = CH_STATE_ACTIVATING;
1845                 goto out;
1846         }
1847         card = CARD_FROM_CDEV(channel->ccwdev);
1848
1849         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1850                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1851                         dev_err(&card->write.ccwdev->dev,
1852                                 "The adapter is used exclusively by another "
1853                                 "host\n");
1854                 else
1855                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1856                                 " negative reply\n",
1857                                 dev_name(&card->write.ccwdev->dev));
1858                 goto out;
1859         }
1860         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1861         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1862                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1863                         "function level mismatch (sent: 0x%x, received: "
1864                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1865                         card->info.func_level, temp);
1866                 goto out;
1867         }
1868         channel->state = CH_STATE_UP;
1869 out:
1870         qeth_release_buffer(channel, iob);
1871 }
1872
1873 static void qeth_idx_read_cb(struct qeth_channel *channel,
1874                 struct qeth_cmd_buffer *iob)
1875 {
1876         struct qeth_card *card;
1877         __u16 temp;
1878
1879         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1880         if (channel->state == CH_STATE_DOWN) {
1881                 channel->state = CH_STATE_ACTIVATING;
1882                 goto out;
1883         }
1884
1885         card = CARD_FROM_CDEV(channel->ccwdev);
1886         if (qeth_check_idx_response(card, iob->data))
1887                         goto out;
1888
1889         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1890                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1891                 case QETH_IDX_ACT_ERR_EXCL:
1892                         dev_err(&card->write.ccwdev->dev,
1893                                 "The adapter is used exclusively by another "
1894                                 "host\n");
1895                         break;
1896                 case QETH_IDX_ACT_ERR_AUTH:
1897                 case QETH_IDX_ACT_ERR_AUTH_USER:
1898                         dev_err(&card->read.ccwdev->dev,
1899                                 "Setting the device online failed because of "
1900                                 "insufficient authorization\n");
1901                         break;
1902                 default:
1903                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1904                                 " negative reply\n",
1905                                 dev_name(&card->read.ccwdev->dev));
1906                 }
1907                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1908                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1909                 goto out;
1910         }
1911
1912 /**
1913  *  * temporary fix for microcode bug
1914  *   * to revert it,replace OR by AND
1915  *    */
1916         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1917              (card->info.type == QETH_CARD_TYPE_OSD))
1918                 card->info.portname_required = 1;
1919
1920         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1921         if (temp != qeth_peer_func_level(card->info.func_level)) {
1922                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1923                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1924                         dev_name(&card->read.ccwdev->dev),
1925                         card->info.func_level, temp);
1926                 goto out;
1927         }
1928         memcpy(&card->token.issuer_rm_r,
1929                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1930                QETH_MPC_TOKEN_LENGTH);
1931         memcpy(&card->info.mcl_level[0],
1932                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1933         channel->state = CH_STATE_UP;
1934 out:
1935         qeth_release_buffer(channel, iob);
1936 }
1937
1938 void qeth_prepare_control_data(struct qeth_card *card, int len,
1939                 struct qeth_cmd_buffer *iob)
1940 {
1941         qeth_setup_ccw(&card->write, iob->data, len);
1942         iob->callback = qeth_release_buffer;
1943
1944         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1945                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1946         card->seqno.trans_hdr++;
1947         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1948                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1949         card->seqno.pdu_hdr++;
1950         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1951                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1952         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1953 }
1954 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1955
1956 int qeth_send_control_data(struct qeth_card *card, int len,
1957                 struct qeth_cmd_buffer *iob,
1958                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1959                         unsigned long),
1960                 void *reply_param)
1961 {
1962         int rc;
1963         unsigned long flags;
1964         struct qeth_reply *reply = NULL;
1965         unsigned long timeout, event_timeout;
1966         struct qeth_ipa_cmd *cmd;
1967
1968         QETH_CARD_TEXT(card, 2, "sendctl");
1969
1970         if (card->read_or_write_problem) {
1971                 qeth_release_buffer(iob->channel, iob);
1972                 return -EIO;
1973         }
1974         reply = qeth_alloc_reply(card);
1975         if (!reply) {
1976                 return -ENOMEM;
1977         }
1978         reply->callback = reply_cb;
1979         reply->param = reply_param;
1980         if (card->state == CARD_STATE_DOWN)
1981                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1982         else
1983                 reply->seqno = card->seqno.ipa++;
1984         init_waitqueue_head(&reply->wait_q);
1985         spin_lock_irqsave(&card->lock, flags);
1986         list_add_tail(&reply->list, &card->cmd_waiter_list);
1987         spin_unlock_irqrestore(&card->lock, flags);
1988         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1989
1990         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1991         qeth_prepare_control_data(card, len, iob);
1992
1993         if (IS_IPA(iob->data))
1994                 event_timeout = QETH_IPA_TIMEOUT;
1995         else
1996                 event_timeout = QETH_TIMEOUT;
1997         timeout = jiffies + event_timeout;
1998
1999         QETH_CARD_TEXT(card, 6, "noirqpnd");
2000         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2001         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2002                               (addr_t) iob, 0, 0);
2003         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2004         if (rc) {
2005                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2006                         "ccw_device_start rc = %i\n",
2007                         dev_name(&card->write.ccwdev->dev), rc);
2008                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2009                 spin_lock_irqsave(&card->lock, flags);
2010                 list_del_init(&reply->list);
2011                 qeth_put_reply(reply);
2012                 spin_unlock_irqrestore(&card->lock, flags);
2013                 qeth_release_buffer(iob->channel, iob);
2014                 atomic_set(&card->write.irq_pending, 0);
2015                 wake_up(&card->wait_q);
2016                 return rc;
2017         }
2018
2019         /* we have only one long running ipassist, since we can ensure
2020            process context of this command we can sleep */
2021         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2022         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2023             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2024                 if (!wait_event_timeout(reply->wait_q,
2025                     atomic_read(&reply->received), event_timeout))
2026                         goto time_err;
2027         } else {
2028                 while (!atomic_read(&reply->received)) {
2029                         if (time_after(jiffies, timeout))
2030                                 goto time_err;
2031                         cpu_relax();
2032                 };
2033         }
2034
2035         if (reply->rc == -EIO)
2036                 goto error;
2037         rc = reply->rc;
2038         qeth_put_reply(reply);
2039         return rc;
2040
2041 time_err:
2042         reply->rc = -ETIME;
2043         spin_lock_irqsave(&reply->card->lock, flags);
2044         list_del_init(&reply->list);
2045         spin_unlock_irqrestore(&reply->card->lock, flags);
2046         atomic_inc(&reply->received);
2047 error:
2048         atomic_set(&card->write.irq_pending, 0);
2049         qeth_release_buffer(iob->channel, iob);
2050         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2051         rc = reply->rc;
2052         qeth_put_reply(reply);
2053         return rc;
2054 }
2055 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2056
2057 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2058                 unsigned long data)
2059 {
2060         struct qeth_cmd_buffer *iob;
2061
2062         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2063
2064         iob = (struct qeth_cmd_buffer *) data;
2065         memcpy(&card->token.cm_filter_r,
2066                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2067                QETH_MPC_TOKEN_LENGTH);
2068         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2069         return 0;
2070 }
2071
2072 static int qeth_cm_enable(struct qeth_card *card)
2073 {
2074         int rc;
2075         struct qeth_cmd_buffer *iob;
2076
2077         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2078
2079         iob = qeth_wait_for_buffer(&card->write);
2080         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2081         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2082                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2083         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2084                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2085
2086         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2087                                     qeth_cm_enable_cb, NULL);
2088         return rc;
2089 }
2090
2091 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2092                 unsigned long data)
2093 {
2094
2095         struct qeth_cmd_buffer *iob;
2096
2097         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2098
2099         iob = (struct qeth_cmd_buffer *) data;
2100         memcpy(&card->token.cm_connection_r,
2101                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2102                QETH_MPC_TOKEN_LENGTH);
2103         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2104         return 0;
2105 }
2106
2107 static int qeth_cm_setup(struct qeth_card *card)
2108 {
2109         int rc;
2110         struct qeth_cmd_buffer *iob;
2111
2112         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2113
2114         iob = qeth_wait_for_buffer(&card->write);
2115         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2116         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2117                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2118         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2119                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2120         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2121                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2122         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2123                                     qeth_cm_setup_cb, NULL);
2124         return rc;
2125
2126 }
2127
2128 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2129 {
2130         switch (card->info.type) {
2131         case QETH_CARD_TYPE_UNKNOWN:
2132                 return 1500;
2133         case QETH_CARD_TYPE_IQD:
2134                 return card->info.max_mtu;
2135         case QETH_CARD_TYPE_OSD:
2136                 switch (card->info.link_type) {
2137                 case QETH_LINK_TYPE_HSTR:
2138                 case QETH_LINK_TYPE_LANE_TR:
2139                         return 2000;
2140                 default:
2141                         return 1492;
2142                 }
2143         case QETH_CARD_TYPE_OSM:
2144         case QETH_CARD_TYPE_OSX:
2145                 return 1492;
2146         default:
2147                 return 1500;
2148         }
2149 }
2150
2151 static inline int qeth_get_mtu_outof_framesize(int framesize)
2152 {
2153         switch (framesize) {
2154         case 0x4000:
2155                 return 8192;
2156         case 0x6000:
2157                 return 16384;
2158         case 0xa000:
2159                 return 32768;
2160         case 0xffff:
2161                 return 57344;
2162         default:
2163                 return 0;
2164         }
2165 }
2166
2167 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2168 {
2169         switch (card->info.type) {
2170         case QETH_CARD_TYPE_OSD:
2171         case QETH_CARD_TYPE_OSM:
2172         case QETH_CARD_TYPE_OSX:
2173         case QETH_CARD_TYPE_IQD:
2174                 return ((mtu >= 576) &&
2175                         (mtu <= card->info.max_mtu));
2176         case QETH_CARD_TYPE_OSN:
2177         case QETH_CARD_TYPE_UNKNOWN:
2178         default:
2179                 return 1;
2180         }
2181 }
2182
2183 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2184                 unsigned long data)
2185 {
2186
2187         __u16 mtu, framesize;
2188         __u16 len;
2189         __u8 link_type;
2190         struct qeth_cmd_buffer *iob;
2191
2192         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2193
2194         iob = (struct qeth_cmd_buffer *) data;
2195         memcpy(&card->token.ulp_filter_r,
2196                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2197                QETH_MPC_TOKEN_LENGTH);
2198         if (card->info.type == QETH_CARD_TYPE_IQD) {
2199                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2200                 mtu = qeth_get_mtu_outof_framesize(framesize);
2201                 if (!mtu) {
2202                         iob->rc = -EINVAL;
2203                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2204                         return 0;
2205                 }
2206                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2207                         /* frame size has changed */
2208                         if (card->dev &&
2209                             ((card->dev->mtu == card->info.initial_mtu) ||
2210                              (card->dev->mtu > mtu)))
2211                                 card->dev->mtu = mtu;
2212                         qeth_free_qdio_buffers(card);
2213                 }
2214                 card->info.initial_mtu = mtu;
2215                 card->info.max_mtu = mtu;
2216                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2217         } else {
2218                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2219                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2220                         iob->data);
2221                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2222         }
2223
2224         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2225         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2226                 memcpy(&link_type,
2227                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2228                 card->info.link_type = link_type;
2229         } else
2230                 card->info.link_type = 0;
2231         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2232         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2233         return 0;
2234 }
2235
2236 static int qeth_ulp_enable(struct qeth_card *card)
2237 {
2238         int rc;
2239         char prot_type;
2240         struct qeth_cmd_buffer *iob;
2241
2242         /*FIXME: trace view callbacks*/
2243         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2244
2245         iob = qeth_wait_for_buffer(&card->write);
2246         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2247
2248         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2249                 (__u8) card->info.portno;
2250         if (card->options.layer2)
2251                 if (card->info.type == QETH_CARD_TYPE_OSN)
2252                         prot_type = QETH_PROT_OSN2;
2253                 else
2254                         prot_type = QETH_PROT_LAYER2;
2255         else
2256                 prot_type = QETH_PROT_TCPIP;
2257
2258         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2259         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2260                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2261         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2262                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2263         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2264                card->info.portname, 9);
2265         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2266                                     qeth_ulp_enable_cb, NULL);
2267         return rc;
2268
2269 }
2270
2271 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2272                 unsigned long data)
2273 {
2274         struct qeth_cmd_buffer *iob;
2275         int rc = 0;
2276
2277         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2278
2279         iob = (struct qeth_cmd_buffer *) data;
2280         memcpy(&card->token.ulp_connection_r,
2281                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2282                QETH_MPC_TOKEN_LENGTH);
2283         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2284                      3)) {
2285                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2286                 dev_err(&card->gdev->dev, "A connection could not be "
2287                         "established because of an OLM limit\n");
2288                 iob->rc = -EMLINK;
2289         }
2290         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2291         return rc;
2292 }
2293
2294 static int qeth_ulp_setup(struct qeth_card *card)
2295 {
2296         int rc;
2297         __u16 temp;
2298         struct qeth_cmd_buffer *iob;
2299         struct ccw_dev_id dev_id;
2300
2301         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2302
2303         iob = qeth_wait_for_buffer(&card->write);
2304         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2305
2306         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2307                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2308         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2309                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2310         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2311                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2312
2313         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2314         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2315         temp = (card->info.cula << 8) + card->info.unit_addr2;
2316         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2317         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2318                                     qeth_ulp_setup_cb, NULL);
2319         return rc;
2320 }
2321
2322 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2323 {
2324         int rc;
2325         struct qeth_qdio_out_buffer *newbuf;
2326
2327         rc = 0;
2328         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2329         if (!newbuf) {
2330                 rc = -ENOMEM;
2331                 goto out;
2332         }
2333         newbuf->buffer = &q->qdio_bufs[bidx];
2334         skb_queue_head_init(&newbuf->skb_list);
2335         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2336         newbuf->q = q;
2337         newbuf->aob = NULL;
2338         newbuf->next_pending = q->bufs[bidx];
2339         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2340         q->bufs[bidx] = newbuf;
2341         if (q->bufstates) {
2342                 q->bufstates[bidx].user = newbuf;
2343                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2344                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2345                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2346                                 (long) newbuf->next_pending);
2347         }
2348 out:
2349         return rc;
2350 }
2351
2352
2353 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2354 {
2355         int i, j;
2356
2357         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2358
2359         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2360                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2361                 return 0;
2362
2363         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2364                                    GFP_KERNEL);
2365         if (!card->qdio.in_q)
2366                 goto out_nomem;
2367         QETH_DBF_TEXT(SETUP, 2, "inq");
2368         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2369         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2370         /* give inbound qeth_qdio_buffers their qdio_buffers */
2371         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2372                 card->qdio.in_q->bufs[i].buffer =
2373                         &card->qdio.in_q->qdio_bufs[i];
2374                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2375         }
2376         /* inbound buffer pool */
2377         if (qeth_alloc_buffer_pool(card))
2378                 goto out_freeinq;
2379
2380         /* outbound */
2381         card->qdio.out_qs =
2382                 kzalloc(card->qdio.no_out_queues *
2383                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2384         if (!card->qdio.out_qs)
2385                 goto out_freepool;
2386         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2387                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2388                                                GFP_KERNEL);
2389                 if (!card->qdio.out_qs[i])
2390                         goto out_freeoutq;
2391                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2392                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2393                 card->qdio.out_qs[i]->queue_no = i;
2394                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2395                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2396                         BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2397                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2398                                 goto out_freeoutqbufs;
2399                 }
2400         }
2401
2402         /* completion */
2403         if (qeth_alloc_cq(card))
2404                 goto out_freeoutq;
2405
2406         return 0;
2407
2408 out_freeoutqbufs:
2409         while (j > 0) {
2410                 --j;
2411                 kmem_cache_free(qeth_qdio_outbuf_cache,
2412                                 card->qdio.out_qs[i]->bufs[j]);
2413                 card->qdio.out_qs[i]->bufs[j] = NULL;
2414         }
2415 out_freeoutq:
2416         while (i > 0) {
2417                 kfree(card->qdio.out_qs[--i]);
2418                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2419         }
2420         kfree(card->qdio.out_qs);
2421         card->qdio.out_qs = NULL;
2422 out_freepool:
2423         qeth_free_buffer_pool(card);
2424 out_freeinq:
2425         kfree(card->qdio.in_q);
2426         card->qdio.in_q = NULL;
2427 out_nomem:
2428         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2429         return -ENOMEM;
2430 }
2431
2432 static void qeth_create_qib_param_field(struct qeth_card *card,
2433                 char *param_field)
2434 {
2435
2436         param_field[0] = _ascebc['P'];
2437         param_field[1] = _ascebc['C'];
2438         param_field[2] = _ascebc['I'];
2439         param_field[3] = _ascebc['T'];
2440         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2441         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2442         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2443 }
2444
2445 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2446                 char *param_field)
2447 {
2448         param_field[16] = _ascebc['B'];
2449         param_field[17] = _ascebc['L'];
2450         param_field[18] = _ascebc['K'];
2451         param_field[19] = _ascebc['T'];
2452         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2453         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2454         *((unsigned int *) (&param_field[28])) =
2455                 card->info.blkt.inter_packet_jumbo;
2456 }
2457
2458 static int qeth_qdio_activate(struct qeth_card *card)
2459 {
2460         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2461         return qdio_activate(CARD_DDEV(card));
2462 }
2463
2464 static int qeth_dm_act(struct qeth_card *card)
2465 {
2466         int rc;
2467         struct qeth_cmd_buffer *iob;
2468
2469         QETH_DBF_TEXT(SETUP, 2, "dmact");
2470
2471         iob = qeth_wait_for_buffer(&card->write);
2472         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2473
2474         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2475                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2476         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2477                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2478         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2479         return rc;
2480 }
2481
2482 static int qeth_mpc_initialize(struct qeth_card *card)
2483 {
2484         int rc;
2485
2486         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2487
2488         rc = qeth_issue_next_read(card);
2489         if (rc) {
2490                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2491                 return rc;
2492         }
2493         rc = qeth_cm_enable(card);
2494         if (rc) {
2495                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2496                 goto out_qdio;
2497         }
2498         rc = qeth_cm_setup(card);
2499         if (rc) {
2500                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2501                 goto out_qdio;
2502         }
2503         rc = qeth_ulp_enable(card);
2504         if (rc) {
2505                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2506                 goto out_qdio;
2507         }
2508         rc = qeth_ulp_setup(card);
2509         if (rc) {
2510                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2511                 goto out_qdio;
2512         }
2513         rc = qeth_alloc_qdio_buffers(card);
2514         if (rc) {
2515                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2516                 goto out_qdio;
2517         }
2518         rc = qeth_qdio_establish(card);
2519         if (rc) {
2520                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2521                 qeth_free_qdio_buffers(card);
2522                 goto out_qdio;
2523         }
2524         rc = qeth_qdio_activate(card);
2525         if (rc) {
2526                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2527                 goto out_qdio;
2528         }
2529         rc = qeth_dm_act(card);
2530         if (rc) {
2531                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2532                 goto out_qdio;
2533         }
2534
2535         return 0;
2536 out_qdio:
2537         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2538         return rc;
2539 }
2540
2541 static void qeth_print_status_with_portname(struct qeth_card *card)
2542 {
2543         char dbf_text[15];
2544         int i;
2545
2546         sprintf(dbf_text, "%s", card->info.portname + 1);
2547         for (i = 0; i < 8; i++)
2548                 dbf_text[i] =
2549                         (char) _ebcasc[(__u8) dbf_text[i]];
2550         dbf_text[8] = 0;
2551         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2552                "with link type %s (portname: %s)\n",
2553                qeth_get_cardname(card),
2554                (card->info.mcl_level[0]) ? " (level: " : "",
2555                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2556                (card->info.mcl_level[0]) ? ")" : "",
2557                qeth_get_cardname_short(card),
2558                dbf_text);
2559
2560 }
2561
2562 static void qeth_print_status_no_portname(struct qeth_card *card)
2563 {
2564         if (card->info.portname[0])
2565                 dev_info(&card->gdev->dev, "Device is a%s "
2566                        "card%s%s%s\nwith link type %s "
2567                        "(no portname needed by interface).\n",
2568                        qeth_get_cardname(card),
2569                        (card->info.mcl_level[0]) ? " (level: " : "",
2570                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2571                        (card->info.mcl_level[0]) ? ")" : "",
2572                        qeth_get_cardname_short(card));
2573         else
2574                 dev_info(&card->gdev->dev, "Device is a%s "
2575                        "card%s%s%s\nwith link type %s.\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 }
2582
2583 void qeth_print_status_message(struct qeth_card *card)
2584 {
2585         switch (card->info.type) {
2586         case QETH_CARD_TYPE_OSD:
2587         case QETH_CARD_TYPE_OSM:
2588         case QETH_CARD_TYPE_OSX:
2589                 /* VM will use a non-zero first character
2590                  * to indicate a HiperSockets like reporting
2591                  * of the level OSA sets the first character to zero
2592                  * */
2593                 if (!card->info.mcl_level[0]) {
2594                         sprintf(card->info.mcl_level, "%02x%02x",
2595                                 card->info.mcl_level[2],
2596                                 card->info.mcl_level[3]);
2597
2598                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2599                         break;
2600                 }
2601                 /* fallthrough */
2602         case QETH_CARD_TYPE_IQD:
2603                 if ((card->info.guestlan) ||
2604                     (card->info.mcl_level[0] & 0x80)) {
2605                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2606                                 card->info.mcl_level[0]];
2607                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2608                                 card->info.mcl_level[1]];
2609                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2610                                 card->info.mcl_level[2]];
2611                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2612                                 card->info.mcl_level[3]];
2613                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2614                 }
2615                 break;
2616         default:
2617                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2618         }
2619         if (card->info.portname_required)
2620                 qeth_print_status_with_portname(card);
2621         else
2622                 qeth_print_status_no_portname(card);
2623 }
2624 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2625
2626 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2627 {
2628         struct qeth_buffer_pool_entry *entry;
2629
2630         QETH_CARD_TEXT(card, 5, "inwrklst");
2631
2632         list_for_each_entry(entry,
2633                             &card->qdio.init_pool.entry_list, init_list) {
2634                 qeth_put_buffer_pool_entry(card, entry);
2635         }
2636 }
2637
2638 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2639                 struct qeth_card *card)
2640 {
2641         struct list_head *plh;
2642         struct qeth_buffer_pool_entry *entry;
2643         int i, free;
2644         struct page *page;
2645
2646         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2647                 return NULL;
2648
2649         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2650                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2651                 free = 1;
2652                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2653                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2654                                 free = 0;
2655                                 break;
2656                         }
2657                 }
2658                 if (free) {
2659                         list_del_init(&entry->list);
2660                         return entry;
2661                 }
2662         }
2663
2664         /* no free buffer in pool so take first one and swap pages */
2665         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2666                         struct qeth_buffer_pool_entry, list);
2667         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2668                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2669                         page = alloc_page(GFP_ATOMIC);
2670                         if (!page) {
2671                                 return NULL;
2672                         } else {
2673                                 free_page((unsigned long)entry->elements[i]);
2674                                 entry->elements[i] = page_address(page);
2675                                 if (card->options.performance_stats)
2676                                         card->perf_stats.sg_alloc_page_rx++;
2677                         }
2678                 }
2679         }
2680         list_del_init(&entry->list);
2681         return entry;
2682 }
2683
2684 static int qeth_init_input_buffer(struct qeth_card *card,
2685                 struct qeth_qdio_buffer *buf)
2686 {
2687         struct qeth_buffer_pool_entry *pool_entry;
2688         int i;
2689
2690         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2691                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2692                 if (!buf->rx_skb)
2693                         return 1;
2694         }
2695
2696         pool_entry = qeth_find_free_buffer_pool_entry(card);
2697         if (!pool_entry)
2698                 return 1;
2699
2700         /*
2701          * since the buffer is accessed only from the input_tasklet
2702          * there shouldn't be a need to synchronize; also, since we use
2703          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2704          * buffers
2705          */
2706
2707         buf->pool_entry = pool_entry;
2708         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2709                 buf->buffer->element[i].length = PAGE_SIZE;
2710                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2711                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2712                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2713                 else
2714                         buf->buffer->element[i].eflags = 0;
2715                 buf->buffer->element[i].sflags = 0;
2716         }
2717         return 0;
2718 }
2719
2720 int qeth_init_qdio_queues(struct qeth_card *card)
2721 {
2722         int i, j;
2723         int rc;
2724
2725         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2726
2727         /* inbound queue */
2728         memset(card->qdio.in_q->qdio_bufs, 0,
2729                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2730         qeth_initialize_working_pool_list(card);
2731         /*give only as many buffers to hardware as we have buffer pool entries*/
2732         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2733                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2734         card->qdio.in_q->next_buf_to_init =
2735                 card->qdio.in_buf_pool.buf_count - 1;
2736         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2737                      card->qdio.in_buf_pool.buf_count - 1);
2738         if (rc) {
2739                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2740                 return rc;
2741         }
2742
2743         /* completion */
2744         rc = qeth_cq_init(card);
2745         if (rc) {
2746                 return rc;
2747         }
2748
2749         /* outbound queue */
2750         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2751                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2752                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2753                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2754                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2755                                         card->qdio.out_qs[i]->bufs[j],
2756                                         QETH_QDIO_BUF_EMPTY);
2757                 }
2758                 card->qdio.out_qs[i]->card = card;
2759                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2760                 card->qdio.out_qs[i]->do_pack = 0;
2761                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2762                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2763                 atomic_set(&card->qdio.out_qs[i]->state,
2764                            QETH_OUT_Q_UNLOCKED);
2765         }
2766         return 0;
2767 }
2768 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2769
2770 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2771 {
2772         switch (link_type) {
2773         case QETH_LINK_TYPE_HSTR:
2774                 return 2;
2775         default:
2776                 return 1;
2777         }
2778 }
2779
2780 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2781                 struct qeth_ipa_cmd *cmd, __u8 command,
2782                 enum qeth_prot_versions prot)
2783 {
2784         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2785         cmd->hdr.command = command;
2786         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2787         cmd->hdr.seqno = card->seqno.ipa;
2788         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2789         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2790         if (card->options.layer2)
2791                 cmd->hdr.prim_version_no = 2;
2792         else
2793                 cmd->hdr.prim_version_no = 1;
2794         cmd->hdr.param_count = 1;
2795         cmd->hdr.prot_version = prot;
2796         cmd->hdr.ipa_supported = 0;
2797         cmd->hdr.ipa_enabled = 0;
2798 }
2799
2800 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2801                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2802 {
2803         struct qeth_cmd_buffer *iob;
2804         struct qeth_ipa_cmd *cmd;
2805
2806         iob = qeth_wait_for_buffer(&card->write);
2807         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2808         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2809
2810         return iob;
2811 }
2812 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2813
2814 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2815                 char prot_type)
2816 {
2817         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2818         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2819         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2820                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2821 }
2822 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2823
2824 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2825                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2826                         unsigned long),
2827                 void *reply_param)
2828 {
2829         int rc;
2830         char prot_type;
2831
2832         QETH_CARD_TEXT(card, 4, "sendipa");
2833
2834         if (card->options.layer2)
2835                 if (card->info.type == QETH_CARD_TYPE_OSN)
2836                         prot_type = QETH_PROT_OSN2;
2837                 else
2838                         prot_type = QETH_PROT_LAYER2;
2839         else
2840                 prot_type = QETH_PROT_TCPIP;
2841         qeth_prepare_ipa_cmd(card, iob, prot_type);
2842         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2843                                                 iob, reply_cb, reply_param);
2844         if (rc == -ETIME) {
2845                 qeth_clear_ipacmd_list(card);
2846                 qeth_schedule_recovery(card);
2847         }
2848         return rc;
2849 }
2850 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2851
2852 int qeth_send_startlan(struct qeth_card *card)
2853 {
2854         int rc;
2855         struct qeth_cmd_buffer *iob;
2856
2857         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2858
2859         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2860         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2861         return rc;
2862 }
2863 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2864
2865 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2866                 struct qeth_reply *reply, unsigned long data)
2867 {
2868         struct qeth_ipa_cmd *cmd;
2869
2870         QETH_CARD_TEXT(card, 4, "defadpcb");
2871
2872         cmd = (struct qeth_ipa_cmd *) data;
2873         if (cmd->hdr.return_code == 0)
2874                 cmd->hdr.return_code =
2875                         cmd->data.setadapterparms.hdr.return_code;
2876         return 0;
2877 }
2878 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2879
2880 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2881                 struct qeth_reply *reply, unsigned long data)
2882 {
2883         struct qeth_ipa_cmd *cmd;
2884
2885         QETH_CARD_TEXT(card, 3, "quyadpcb");
2886
2887         cmd = (struct qeth_ipa_cmd *) data;
2888         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2889                 card->info.link_type =
2890                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2891                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2892         }
2893         card->options.adp.supported_funcs =
2894                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2895         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2896 }
2897
2898 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2899                 __u32 command, __u32 cmdlen)
2900 {
2901         struct qeth_cmd_buffer *iob;
2902         struct qeth_ipa_cmd *cmd;
2903
2904         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2905                                      QETH_PROT_IPV4);
2906         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2907         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2908         cmd->data.setadapterparms.hdr.command_code = command;
2909         cmd->data.setadapterparms.hdr.used_total = 1;
2910         cmd->data.setadapterparms.hdr.seq_no = 1;
2911
2912         return iob;
2913 }
2914 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2915
2916 int qeth_query_setadapterparms(struct qeth_card *card)
2917 {
2918         int rc;
2919         struct qeth_cmd_buffer *iob;
2920
2921         QETH_CARD_TEXT(card, 3, "queryadp");
2922         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2923                                    sizeof(struct qeth_ipacmd_setadpparms));
2924         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2925         return rc;
2926 }
2927 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2928
2929 static int qeth_query_ipassists_cb(struct qeth_card *card,
2930                 struct qeth_reply *reply, unsigned long data)
2931 {
2932         struct qeth_ipa_cmd *cmd;
2933
2934         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2935
2936         cmd = (struct qeth_ipa_cmd *) data;
2937         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2938                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2939                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2940         } else {
2941                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2942                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2943         }
2944         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2945         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
2946         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2947         return 0;
2948 }
2949
2950 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2951 {
2952         int rc;
2953         struct qeth_cmd_buffer *iob;
2954
2955         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2956         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2957         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2958         return rc;
2959 }
2960 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2961
2962 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2963                 struct qeth_reply *reply, unsigned long data)
2964 {
2965         struct qeth_ipa_cmd *cmd;
2966         __u16 rc;
2967
2968         cmd = (struct qeth_ipa_cmd *)data;
2969         rc = cmd->hdr.return_code;
2970         if (rc)
2971                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2972         else
2973                 card->info.diagass_support = cmd->data.diagass.ext;
2974         return 0;
2975 }
2976
2977 static int qeth_query_setdiagass(struct qeth_card *card)
2978 {
2979         struct qeth_cmd_buffer *iob;
2980         struct qeth_ipa_cmd    *cmd;
2981
2982         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2983         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2984         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2985         cmd->data.diagass.subcmd_len = 16;
2986         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2987         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2988 }
2989
2990 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2991 {
2992         unsigned long info = get_zeroed_page(GFP_KERNEL);
2993         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2994         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2995         struct ccw_dev_id ccwid;
2996         int level, rc;
2997
2998         tid->chpid = card->info.chpid;
2999         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3000         tid->ssid = ccwid.ssid;
3001         tid->devno = ccwid.devno;
3002         if (!info)
3003                 return;
3004
3005         rc = stsi(NULL, 0, 0, 0);
3006         if (rc == -ENOSYS)
3007                 level = rc;
3008         else
3009                 level = (((unsigned int) rc) >> 28);
3010
3011         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
3012                 tid->lparnr = info222->lpar_number;
3013
3014         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
3015                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3016                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3017         }
3018         free_page(info);
3019         return;
3020 }
3021
3022 static int qeth_hw_trap_cb(struct qeth_card *card,
3023                 struct qeth_reply *reply, unsigned long data)
3024 {
3025         struct qeth_ipa_cmd *cmd;
3026         __u16 rc;
3027
3028         cmd = (struct qeth_ipa_cmd *)data;
3029         rc = cmd->hdr.return_code;
3030         if (rc)
3031                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3032         return 0;
3033 }
3034
3035 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3036 {
3037         struct qeth_cmd_buffer *iob;
3038         struct qeth_ipa_cmd *cmd;
3039
3040         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3041         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3042         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3043         cmd->data.diagass.subcmd_len = 80;
3044         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3045         cmd->data.diagass.type = 1;
3046         cmd->data.diagass.action = action;
3047         switch (action) {
3048         case QETH_DIAGS_TRAP_ARM:
3049                 cmd->data.diagass.options = 0x0003;
3050                 cmd->data.diagass.ext = 0x00010000 +
3051                         sizeof(struct qeth_trap_id);
3052                 qeth_get_trap_id(card,
3053                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3054                 break;
3055         case QETH_DIAGS_TRAP_DISARM:
3056                 cmd->data.diagass.options = 0x0001;
3057                 break;
3058         case QETH_DIAGS_TRAP_CAPTURE:
3059                 break;
3060         }
3061         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3062 }
3063 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3064
3065 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3066                 unsigned int qdio_error, const char *dbftext)
3067 {
3068         if (qdio_error) {
3069                 QETH_CARD_TEXT(card, 2, dbftext);
3070                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3071                                buf->element[15].sflags);
3072                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3073                                buf->element[14].sflags);
3074                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3075                 if ((buf->element[15].sflags) == 0x12) {
3076                         card->stats.rx_dropped++;
3077                         return 0;
3078                 } else
3079                         return 1;
3080         }
3081         return 0;
3082 }
3083 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3084
3085 void qeth_buffer_reclaim_work(struct work_struct *work)
3086 {
3087         struct qeth_card *card = container_of(work, struct qeth_card,
3088                 buffer_reclaim_work.work);
3089
3090         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3091         qeth_queue_input_buffer(card, card->reclaim_index);
3092 }
3093
3094 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3095 {
3096         struct qeth_qdio_q *queue = card->qdio.in_q;
3097         struct list_head *lh;
3098         int count;
3099         int i;
3100         int rc;
3101         int newcount = 0;
3102
3103         count = (index < queue->next_buf_to_init)?
3104                 card->qdio.in_buf_pool.buf_count -
3105                 (queue->next_buf_to_init - index) :
3106                 card->qdio.in_buf_pool.buf_count -
3107                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3108         /* only requeue at a certain threshold to avoid SIGAs */
3109         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3110                 for (i = queue->next_buf_to_init;
3111                      i < queue->next_buf_to_init + count; ++i) {
3112                         if (qeth_init_input_buffer(card,
3113                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3114                                 break;
3115                         } else {
3116                                 newcount++;
3117                         }
3118                 }
3119
3120                 if (newcount < count) {
3121                         /* we are in memory shortage so we switch back to
3122                            traditional skb allocation and drop packages */
3123                         atomic_set(&card->force_alloc_skb, 3);
3124                         count = newcount;
3125                 } else {
3126                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3127                 }
3128
3129                 if (!count) {
3130                         i = 0;
3131                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3132                                 i++;
3133                         if (i == card->qdio.in_buf_pool.buf_count) {
3134                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3135                                 card->reclaim_index = index;
3136                                 schedule_delayed_work(
3137                                         &card->buffer_reclaim_work,
3138                                         QETH_RECLAIM_WORK_TIME);
3139                         }
3140                         return;
3141                 }
3142
3143                 /*
3144                  * according to old code it should be avoided to requeue all
3145                  * 128 buffers in order to benefit from PCI avoidance.
3146                  * this function keeps at least one buffer (the buffer at
3147                  * 'index') un-requeued -> this buffer is the first buffer that
3148                  * will be requeued the next time
3149                  */
3150                 if (card->options.performance_stats) {
3151                         card->perf_stats.inbound_do_qdio_cnt++;
3152                         card->perf_stats.inbound_do_qdio_start_time =
3153                                 qeth_get_micros();
3154                 }
3155                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3156                              queue->next_buf_to_init, count);
3157                 if (card->options.performance_stats)
3158                         card->perf_stats.inbound_do_qdio_time +=
3159                                 qeth_get_micros() -
3160                                 card->perf_stats.inbound_do_qdio_start_time;
3161                 if (rc) {
3162                         QETH_CARD_TEXT(card, 2, "qinberr");
3163                 }
3164                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3165                                           QDIO_MAX_BUFFERS_PER_Q;
3166         }
3167 }
3168 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3169
3170 static int qeth_handle_send_error(struct qeth_card *card,
3171                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3172 {
3173         int sbalf15 = buffer->buffer->element[15].sflags;
3174
3175         QETH_CARD_TEXT(card, 6, "hdsnderr");
3176         if (card->info.type == QETH_CARD_TYPE_IQD) {
3177                 if (sbalf15 == 0) {
3178                         qdio_err = 0;
3179                 } else {
3180                         qdio_err = 1;
3181                 }
3182         }
3183         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3184
3185         if (!qdio_err)
3186                 return QETH_SEND_ERROR_NONE;
3187
3188         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3189                 return QETH_SEND_ERROR_RETRY;
3190
3191         QETH_CARD_TEXT(card, 1, "lnkfail");
3192         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3193                        (u16)qdio_err, (u8)sbalf15);
3194         return QETH_SEND_ERROR_LINK_FAILURE;
3195 }
3196
3197 /*
3198  * Switched to packing state if the number of used buffers on a queue
3199  * reaches a certain limit.
3200  */
3201 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3202 {
3203         if (!queue->do_pack) {
3204                 if (atomic_read(&queue->used_buffers)
3205                     >= QETH_HIGH_WATERMARK_PACK){
3206                         /* switch non-PACKING -> PACKING */
3207                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3208                         if (queue->card->options.performance_stats)
3209                                 queue->card->perf_stats.sc_dp_p++;
3210                         queue->do_pack = 1;
3211                 }
3212         }
3213 }
3214
3215 /*
3216  * Switches from packing to non-packing mode. If there is a packing
3217  * buffer on the queue this buffer will be prepared to be flushed.
3218  * In that case 1 is returned to inform the caller. If no buffer
3219  * has to be flushed, zero is returned.
3220  */
3221 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3222 {
3223         struct qeth_qdio_out_buffer *buffer;
3224         int flush_count = 0;
3225
3226         if (queue->do_pack) {
3227                 if (atomic_read(&queue->used_buffers)
3228                     <= QETH_LOW_WATERMARK_PACK) {
3229                         /* switch PACKING -> non-PACKING */
3230                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3231                         if (queue->card->options.performance_stats)
3232                                 queue->card->perf_stats.sc_p_dp++;
3233                         queue->do_pack = 0;
3234                         /* flush packing buffers */
3235                         buffer = queue->bufs[queue->next_buf_to_fill];
3236                         if ((atomic_read(&buffer->state) ==
3237                                                 QETH_QDIO_BUF_EMPTY) &&
3238                             (buffer->next_element_to_fill > 0)) {
3239                                 atomic_set(&buffer->state,
3240                                            QETH_QDIO_BUF_PRIMED);
3241                                 flush_count++;
3242                                 queue->next_buf_to_fill =
3243                                         (queue->next_buf_to_fill + 1) %
3244                                         QDIO_MAX_BUFFERS_PER_Q;
3245                         }
3246                 }
3247         }
3248         return flush_count;
3249 }
3250
3251
3252 /*
3253  * Called to flush a packing buffer if no more pci flags are on the queue.
3254  * Checks if there is a packing buffer and prepares it to be flushed.
3255  * In that case returns 1, otherwise zero.
3256  */
3257 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3258 {
3259         struct qeth_qdio_out_buffer *buffer;
3260
3261         buffer = queue->bufs[queue->next_buf_to_fill];
3262         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3263            (buffer->next_element_to_fill > 0)) {
3264                 /* it's a packing buffer */
3265                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3266                 queue->next_buf_to_fill =
3267                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3268                 return 1;
3269         }
3270         return 0;
3271 }
3272
3273 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3274                                int count)
3275 {
3276         struct qeth_qdio_out_buffer *buf;
3277         int rc;
3278         int i;
3279         unsigned int qdio_flags;
3280
3281         for (i = index; i < index + count; ++i) {
3282                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3283                 buf = queue->bufs[bidx];
3284                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3285                                 SBAL_EFLAGS_LAST_ENTRY;
3286
3287                 if (queue->bufstates)
3288                         queue->bufstates[bidx].user = buf;
3289
3290                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3291                         continue;
3292
3293                 if (!queue->do_pack) {
3294                         if ((atomic_read(&queue->used_buffers) >=
3295                                 (QETH_HIGH_WATERMARK_PACK -
3296                                  QETH_WATERMARK_PACK_FUZZ)) &&
3297                             !atomic_read(&queue->set_pci_flags_count)) {
3298                                 /* it's likely that we'll go to packing
3299                                  * mode soon */
3300                                 atomic_inc(&queue->set_pci_flags_count);
3301                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3302                         }
3303                 } else {
3304                         if (!atomic_read(&queue->set_pci_flags_count)) {
3305                                 /*
3306                                  * there's no outstanding PCI any more, so we
3307                                  * have to request a PCI to be sure the the PCI
3308                                  * will wake at some time in the future then we
3309                                  * can flush packed buffers that might still be
3310                                  * hanging around, which can happen if no
3311                                  * further send was requested by the stack
3312                                  */
3313                                 atomic_inc(&queue->set_pci_flags_count);
3314                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3315                         }
3316                 }
3317         }
3318
3319         queue->card->dev->trans_start = jiffies;
3320         if (queue->card->options.performance_stats) {
3321                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3322                 queue->card->perf_stats.outbound_do_qdio_start_time =
3323                         qeth_get_micros();
3324         }
3325         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3326         if (atomic_read(&queue->set_pci_flags_count))
3327                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3328         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3329                      queue->queue_no, index, count);
3330         if (queue->card->options.performance_stats)
3331                 queue->card->perf_stats.outbound_do_qdio_time +=
3332                         qeth_get_micros() -
3333                         queue->card->perf_stats.outbound_do_qdio_start_time;
3334         atomic_add(count, &queue->used_buffers);
3335         if (rc) {
3336                 queue->card->stats.tx_errors += count;
3337                 /* ignore temporary SIGA errors without busy condition */
3338                 if (rc == -ENOBUFS)
3339                         return;
3340                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3341                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3342                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3343                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3344                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3345
3346                 /* this must not happen under normal circumstances. if it
3347                  * happens something is really wrong -> recover */
3348                 qeth_schedule_recovery(queue->card);
3349                 return;
3350         }
3351         if (queue->card->options.performance_stats)
3352                 queue->card->perf_stats.bufs_sent += count;
3353 }
3354
3355 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3356 {
3357         int index;
3358         int flush_cnt = 0;
3359         int q_was_packing = 0;
3360
3361         /*
3362          * check if weed have to switch to non-packing mode or if
3363          * we have to get a pci flag out on the queue
3364          */
3365         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3366             !atomic_read(&queue->set_pci_flags_count)) {
3367                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3368                                 QETH_OUT_Q_UNLOCKED) {
3369                         /*
3370                          * If we get in here, there was no action in
3371                          * do_send_packet. So, we check if there is a
3372                          * packing buffer to be flushed here.
3373                          */
3374                         netif_stop_queue(queue->card->dev);
3375                         index = queue->next_buf_to_fill;
3376                         q_was_packing = queue->do_pack;
3377                         /* queue->do_pack may change */
3378                         barrier();
3379                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3380                         if (!flush_cnt &&
3381                             !atomic_read(&queue->set_pci_flags_count))
3382                                 flush_cnt +=
3383                                         qeth_flush_buffers_on_no_pci(queue);
3384                         if (queue->card->options.performance_stats &&
3385                             q_was_packing)
3386                                 queue->card->perf_stats.bufs_sent_pack +=
3387                                         flush_cnt;
3388                         if (flush_cnt)
3389                                 qeth_flush_buffers(queue, index, flush_cnt);
3390                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3391                 }
3392         }
3393 }
3394
3395 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3396                 unsigned long card_ptr)
3397 {
3398         struct qeth_card *card = (struct qeth_card *)card_ptr;
3399
3400         if (card->dev && (card->dev->flags & IFF_UP))
3401                 napi_schedule(&card->napi);
3402 }
3403 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3404
3405 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3406 {
3407         int rc;
3408
3409         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3410                 rc = -1;
3411                 goto out;
3412         } else {
3413                 if (card->options.cq == cq) {
3414                         rc = 0;
3415                         goto out;
3416                 }
3417
3418                 if (card->state != CARD_STATE_DOWN &&
3419                     card->state != CARD_STATE_RECOVER) {
3420                         rc = -1;
3421                         goto out;
3422                 }
3423
3424                 qeth_free_qdio_buffers(card);
3425                 card->options.cq = cq;
3426                 rc = 0;
3427         }
3428 out:
3429         return rc;
3430
3431 }
3432 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3433
3434
3435 static void qeth_qdio_cq_handler(struct qeth_card *card,
3436                 unsigned int qdio_err,
3437                 unsigned int queue, int first_element, int count) {
3438         struct qeth_qdio_q *cq = card->qdio.c_q;
3439         int i;
3440         int rc;
3441
3442         if (!qeth_is_cq(card, queue))
3443                 goto out;
3444
3445         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3446         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3447         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3448
3449         if (qdio_err) {
3450                 netif_stop_queue(card->dev);
3451                 qeth_schedule_recovery(card);
3452                 goto out;
3453         }
3454
3455         if (card->options.performance_stats) {
3456                 card->perf_stats.cq_cnt++;
3457                 card->perf_stats.cq_start_time = qeth_get_micros();
3458         }
3459
3460         for (i = first_element; i < first_element + count; ++i) {
3461                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3462                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3463                 int e;
3464
3465                 e = 0;
3466                 while (buffer->element[e].addr) {
3467                         unsigned long phys_aob_addr;
3468
3469                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3470                         qeth_qdio_handle_aob(card, phys_aob_addr);
3471                         buffer->element[e].addr = NULL;
3472                         buffer->element[e].eflags = 0;
3473                         buffer->element[e].sflags = 0;
3474                         buffer->element[e].length = 0;
3475
3476                         ++e;
3477                 }
3478
3479                 buffer->element[15].eflags = 0;
3480                 buffer->element[15].sflags = 0;
3481         }
3482         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3483                     card->qdio.c_q->next_buf_to_init,
3484                     count);
3485         if (rc) {
3486                 dev_warn(&card->gdev->dev,
3487                         "QDIO reported an error, rc=%i\n", rc);
3488                 QETH_CARD_TEXT(card, 2, "qcqherr");
3489         }
3490         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3491                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3492
3493         netif_wake_queue(card->dev);
3494
3495         if (card->options.performance_stats) {
3496                 int delta_t = qeth_get_micros();
3497                 delta_t -= card->perf_stats.cq_start_time;
3498                 card->perf_stats.cq_time += delta_t;
3499         }
3500 out:
3501         return;
3502 }
3503
3504 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3505                 unsigned int queue, int first_elem, int count,
3506                 unsigned long card_ptr)
3507 {
3508         struct qeth_card *card = (struct qeth_card *)card_ptr;
3509
3510         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3511         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3512
3513         if (qeth_is_cq(card, queue))
3514                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3515         else if (qdio_err)
3516                 qeth_schedule_recovery(card);
3517
3518
3519 }
3520 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3521
3522 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3523                 unsigned int qdio_error, int __queue, int first_element,
3524                 int count, unsigned long card_ptr)
3525 {
3526         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3527         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3528         struct qeth_qdio_out_buffer *buffer;
3529         int i;
3530
3531         QETH_CARD_TEXT(card, 6, "qdouhdl");
3532         if (qdio_error & QDIO_ERROR_FATAL) {
3533                 QETH_CARD_TEXT(card, 2, "achkcond");
3534                 netif_stop_queue(card->dev);
3535                 qeth_schedule_recovery(card);
3536                 return;
3537         }
3538         if (card->options.performance_stats) {
3539                 card->perf_stats.outbound_handler_cnt++;
3540                 card->perf_stats.outbound_handler_start_time =
3541                         qeth_get_micros();
3542         }
3543         for (i = first_element; i < (first_element + count); ++i) {
3544                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3545                 buffer = queue->bufs[bidx];
3546                 qeth_handle_send_error(card, buffer, qdio_error);
3547
3548                 if (queue->bufstates &&
3549                     (queue->bufstates[bidx].flags &
3550                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3551                         BUG_ON(card->options.cq != QETH_CQ_ENABLED);
3552
3553                         if (atomic_cmpxchg(&buffer->state,
3554                                            QETH_QDIO_BUF_PRIMED,
3555                                            QETH_QDIO_BUF_PENDING) ==
3556                                 QETH_QDIO_BUF_PRIMED) {
3557                                 qeth_notify_skbs(queue, buffer,
3558                                                  TX_NOTIFY_PENDING);
3559                         }
3560                         buffer->aob = queue->bufstates[bidx].aob;
3561                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3562                         QETH_CARD_TEXT(queue->card, 5, "aob");
3563                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3564                                         virt_to_phys(buffer->aob));
3565                         BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3566                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3567                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3568                                 qeth_schedule_recovery(card);
3569                         }
3570                 } else {
3571                         if (card->options.cq == QETH_CQ_ENABLED) {
3572                                 enum iucv_tx_notify n;
3573
3574                                 n = qeth_compute_cq_notification(
3575                                         buffer->buffer->element[15].sflags, 0);
3576                                 qeth_notify_skbs(queue, buffer, n);
3577                         }
3578
3579                         qeth_clear_output_buffer(queue, buffer,
3580                                                 QETH_QDIO_BUF_EMPTY);
3581                 }
3582                 qeth_cleanup_handled_pending(queue, bidx, 0);
3583         }
3584         atomic_sub(count, &queue->used_buffers);
3585         /* check if we need to do something on this outbound queue */
3586         if (card->info.type != QETH_CARD_TYPE_IQD)
3587                 qeth_check_outbound_queue(queue);
3588
3589         netif_wake_queue(queue->card->dev);
3590         if (card->options.performance_stats)
3591                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3592                         card->perf_stats.outbound_handler_start_time;
3593 }
3594 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3595
3596 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3597                         int ipv, int cast_type)
3598 {
3599         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3600                      card->info.type == QETH_CARD_TYPE_OSX))
3601                 return card->qdio.default_out_queue;
3602         switch (card->qdio.no_out_queues) {
3603         case 4:
3604                 if (cast_type && card->info.is_multicast_different)
3605                         return card->info.is_multicast_different &
3606                                 (card->qdio.no_out_queues - 1);
3607                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3608                         const u8 tos = ip_hdr(skb)->tos;
3609
3610                         if (card->qdio.do_prio_queueing ==
3611                                 QETH_PRIO_Q_ING_TOS) {
3612                                 if (tos & IP_TOS_NOTIMPORTANT)
3613                                         return 3;
3614                                 if (tos & IP_TOS_HIGHRELIABILITY)
3615                                         return 2;
3616                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3617                                         return 1;
3618                                 if (tos & IP_TOS_LOWDELAY)
3619                                         return 0;
3620                         }
3621                         if (card->qdio.do_prio_queueing ==
3622                                 QETH_PRIO_Q_ING_PREC)
3623                                 return 3 - (tos >> 6);
3624                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3625                         /* TODO: IPv6!!! */
3626                 }
3627                 return card->qdio.default_out_queue;
3628         case 1: /* fallthrough for single-out-queue 1920-device */
3629         default:
3630                 return card->qdio.default_out_queue;
3631         }
3632 }
3633 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3634
3635 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3636                      struct sk_buff *skb, int elems)
3637 {
3638         int dlen = skb->len - skb->data_len;
3639         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3640                 PFN_DOWN((unsigned long)skb->data);
3641
3642         elements_needed += skb_shinfo(skb)->nr_frags;
3643         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3644                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3645                         "(Number=%d / Length=%d). Discarded.\n",
3646                         (elements_needed+elems), skb->len);
3647                 return 0;
3648         }
3649         return elements_needed;
3650 }
3651 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3652
3653 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3654 {
3655         int hroom, inpage, rest;
3656
3657         if (((unsigned long)skb->data & PAGE_MASK) !=
3658             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3659                 hroom = skb_headroom(skb);
3660                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3661                 rest = len - inpage;
3662                 if (rest > hroom)
3663                         return 1;
3664                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3665                 skb->data -= rest;
3666                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3667         }
3668         return 0;
3669 }
3670 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3671
3672 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3673         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3674         int offset)
3675 {
3676         int length = skb->len - skb->data_len;
3677         int length_here;
3678         int element;
3679         char *data;
3680         int first_lap, cnt;
3681         struct skb_frag_struct *frag;
3682
3683         element = *next_element_to_fill;
3684         data = skb->data;
3685         first_lap = (is_tso == 0 ? 1 : 0);
3686
3687         if (offset >= 0) {
3688                 data = skb->data + offset;
3689                 length -= offset;
3690                 first_lap = 0;
3691         }
3692
3693         while (length > 0) {
3694                 /* length_here is the remaining amount of data in this page */
3695                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3696                 if (length < length_here)
3697                         length_here = length;
3698
3699                 buffer->element[element].addr = data;
3700                 buffer->element[element].length = length_here;
3701                 length -= length_here;
3702                 if (!length) {
3703                         if (first_lap)
3704                                 if (skb_shinfo(skb)->nr_frags)
3705                                         buffer->element[element].eflags =
3706                                                 SBAL_EFLAGS_FIRST_FRAG;
3707                                 else
3708                                         buffer->element[element].eflags = 0;
3709                         else
3710                                 buffer->element[element].eflags =
3711                                     SBAL_EFLAGS_MIDDLE_FRAG;
3712                 } else {
3713                         if (first_lap)
3714                                 buffer->element[element].eflags =
3715                                     SBAL_EFLAGS_FIRST_FRAG;
3716                         else
3717                                 buffer->element[element].eflags =
3718                                     SBAL_EFLAGS_MIDDLE_FRAG;
3719                 }
3720                 data += length_here;
3721                 element++;
3722                 first_lap = 0;
3723         }
3724
3725         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3726                 frag = &skb_shinfo(skb)->frags[cnt];
3727                 buffer->element[element].addr = (char *)
3728                         page_to_phys(skb_frag_page(frag))
3729                         + frag->page_offset;
3730                 buffer->element[element].length = frag->size;
3731                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3732                 element++;
3733         }
3734
3735         if (buffer->element[element - 1].eflags)
3736                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3737         *next_element_to_fill = element;
3738 }
3739
3740 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3741                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3742                 struct qeth_hdr *hdr, int offset, int hd_len)
3743 {
3744         struct qdio_buffer *buffer;
3745         int flush_cnt = 0, hdr_len, large_send = 0;
3746
3747         buffer = buf->buffer;
3748         atomic_inc(&skb->users);
3749         skb_queue_tail(&buf->skb_list, skb);
3750
3751         /*check first on TSO ....*/
3752         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3753                 int element = buf->next_element_to_fill;
3754
3755                 hdr_len = sizeof(struct qeth_hdr_tso) +
3756                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3757                 /*fill first buffer entry only with header information */
3758                 buffer->element[element].addr = skb->data;
3759                 buffer->element[element].length = hdr_len;
3760                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3761                 buf->next_element_to_fill++;
3762                 skb->data += hdr_len;
3763                 skb->len  -= hdr_len;
3764                 large_send = 1;
3765         }
3766
3767         if (offset >= 0) {
3768                 int element = buf->next_element_to_fill;
3769                 buffer->element[element].addr = hdr;
3770                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3771                                                         hd_len;
3772                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3773                 buf->is_header[element] = 1;
3774                 buf->next_element_to_fill++;
3775         }
3776
3777         __qeth_fill_buffer(skb, buffer, large_send,
3778                 (int *)&buf->next_element_to_fill, offset);
3779
3780         if (!queue->do_pack) {
3781                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3782                 /* set state to PRIMED -> will be flushed */
3783                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3784                 flush_cnt = 1;
3785         } else {
3786                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3787                 if (queue->card->options.performance_stats)
3788                         queue->card->perf_stats.skbs_sent_pack++;
3789                 if (buf->next_element_to_fill >=
3790                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3791                         /*
3792                          * packed buffer if full -> set state PRIMED
3793                          * -> will be flushed
3794                          */
3795                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3796                         flush_cnt = 1;
3797                 }
3798         }
3799         return flush_cnt;
3800 }
3801
3802 int qeth_do_send_packet_fast(struct qeth_card *card,
3803                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3804                 struct qeth_hdr *hdr, int elements_needed,
3805                 int offset, int hd_len)
3806 {
3807         struct qeth_qdio_out_buffer *buffer;
3808         int index;
3809
3810         /* spin until we get the queue ... */
3811         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3812                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3813         /* ... now we've got the queue */
3814         index = queue->next_buf_to_fill;
3815         buffer = queue->bufs[queue->next_buf_to_fill];
3816         /*
3817          * check if buffer is empty to make sure that we do not 'overtake'
3818          * ourselves and try to fill a buffer that is already primed
3819          */
3820         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3821                 goto out;
3822         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3823                                           QDIO_MAX_BUFFERS_PER_Q;
3824         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3825         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3826         qeth_flush_buffers(queue, index, 1);
3827         return 0;
3828 out:
3829         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3830         return -EBUSY;
3831 }
3832 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3833
3834 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3835                 struct sk_buff *skb, struct qeth_hdr *hdr,
3836                 int elements_needed)
3837 {
3838         struct qeth_qdio_out_buffer *buffer;
3839         int start_index;
3840         int flush_count = 0;
3841         int do_pack = 0;
3842         int tmp;
3843         int rc = 0;
3844
3845         /* spin until we get the queue ... */
3846         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3847                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3848         start_index = queue->next_buf_to_fill;
3849         buffer = queue->bufs[queue->next_buf_to_fill];
3850         /*
3851          * check if buffer is empty to make sure that we do not 'overtake'
3852          * ourselves and try to fill a buffer that is already primed
3853          */
3854         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3855                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3856                 return -EBUSY;
3857         }
3858         /* check if we need to switch packing state of this queue */
3859         qeth_switch_to_packing_if_needed(queue);
3860         if (queue->do_pack) {
3861                 do_pack = 1;
3862                 /* does packet fit in current buffer? */
3863                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3864                     buffer->next_element_to_fill) < elements_needed) {
3865                         /* ... no -> set state PRIMED */
3866                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3867                         flush_count++;
3868                         queue->next_buf_to_fill =
3869                                 (queue->next_buf_to_fill + 1) %
3870                                 QDIO_MAX_BUFFERS_PER_Q;
3871                         buffer = queue->bufs[queue->next_buf_to_fill];
3872                         /* we did a step forward, so check buffer state
3873                          * again */
3874                         if (atomic_read(&buffer->state) !=
3875                             QETH_QDIO_BUF_EMPTY) {
3876                                 qeth_flush_buffers(queue, start_index,
3877                                                            flush_count);
3878                                 atomic_set(&queue->state,
3879                                                 QETH_OUT_Q_UNLOCKED);
3880                                 return -EBUSY;
3881                         }
3882                 }
3883         }
3884         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3885         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3886                                   QDIO_MAX_BUFFERS_PER_Q;
3887         flush_count += tmp;
3888         if (flush_count)
3889                 qeth_flush_buffers(queue, start_index, flush_count);
3890         else if (!atomic_read(&queue->set_pci_flags_count))
3891                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3892         /*
3893          * queue->state will go from LOCKED -> UNLOCKED or from
3894          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3895          * (switch packing state or flush buffer to get another pci flag out).
3896          * In that case we will enter this loop
3897          */
3898         while (atomic_dec_return(&queue->state)) {
3899                 flush_count = 0;
3900                 start_index = queue->next_buf_to_fill;
3901                 /* check if we can go back to non-packing state */
3902                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3903                 /*
3904                  * check if we need to flush a packing buffer to get a pci
3905                  * flag out on the queue
3906                  */
3907                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3908                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3909                 if (flush_count)
3910                         qeth_flush_buffers(queue, start_index, flush_count);
3911         }
3912         /* at this point the queue is UNLOCKED again */
3913         if (queue->card->options.performance_stats && do_pack)
3914                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3915
3916         return rc;
3917 }
3918 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3919
3920 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3921                 struct qeth_reply *reply, unsigned long data)
3922 {
3923         struct qeth_ipa_cmd *cmd;
3924         struct qeth_ipacmd_setadpparms *setparms;
3925
3926         QETH_CARD_TEXT(card, 4, "prmadpcb");
3927
3928         cmd = (struct qeth_ipa_cmd *) data;
3929         setparms = &(cmd->data.setadapterparms);
3930
3931         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3932         if (cmd->hdr.return_code) {
3933                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3934                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3935         }
3936         card->info.promisc_mode = setparms->data.mode;
3937         return 0;
3938 }
3939
3940 void qeth_setadp_promisc_mode(struct qeth_card *card)
3941 {
3942         enum qeth_ipa_promisc_modes mode;
3943         struct net_device *dev = card->dev;
3944         struct qeth_cmd_buffer *iob;
3945         struct qeth_ipa_cmd *cmd;
3946
3947         QETH_CARD_TEXT(card, 4, "setprom");
3948
3949         if (((dev->flags & IFF_PROMISC) &&
3950              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3951             (!(dev->flags & IFF_PROMISC) &&
3952              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3953                 return;
3954         mode = SET_PROMISC_MODE_OFF;
3955         if (dev->flags & IFF_PROMISC)
3956                 mode = SET_PROMISC_MODE_ON;
3957         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3958
3959         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3960                         sizeof(struct qeth_ipacmd_setadpparms));
3961         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3962         cmd->data.setadapterparms.data.mode = mode;
3963         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3964 }
3965 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3966
3967 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3968 {
3969         struct qeth_card *card;
3970         char dbf_text[15];
3971
3972         card = dev->ml_priv;
3973
3974         QETH_CARD_TEXT(card, 4, "chgmtu");
3975         sprintf(dbf_text, "%8x", new_mtu);
3976         QETH_CARD_TEXT(card, 4, dbf_text);
3977
3978         if (new_mtu < 64)
3979                 return -EINVAL;
3980         if (new_mtu > 65535)
3981                 return -EINVAL;
3982         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3983             (!qeth_mtu_is_valid(card, new_mtu)))
3984                 return -EINVAL;
3985         dev->mtu = new_mtu;
3986         return 0;
3987 }
3988 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3989
3990 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3991 {
3992         struct qeth_card *card;
3993
3994         card = dev->ml_priv;
3995
3996         QETH_CARD_TEXT(card, 5, "getstat");
3997
3998         return &card->stats;
3999 }
4000 EXPORT_SYMBOL_GPL(qeth_get_stats);
4001
4002 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4003                 struct qeth_reply *reply, unsigned long data)
4004 {
4005         struct qeth_ipa_cmd *cmd;
4006
4007         QETH_CARD_TEXT(card, 4, "chgmaccb");
4008
4009         cmd = (struct qeth_ipa_cmd *) data;
4010         if (!card->options.layer2 ||
4011             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4012                 memcpy(card->dev->dev_addr,
4013                        &cmd->data.setadapterparms.data.change_addr.addr,
4014                        OSA_ADDR_LEN);
4015                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4016         }
4017         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4018         return 0;
4019 }
4020
4021 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4022 {
4023         int rc;
4024         struct qeth_cmd_buffer *iob;
4025         struct qeth_ipa_cmd *cmd;
4026
4027         QETH_CARD_TEXT(card, 4, "chgmac");
4028
4029         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4030                                    sizeof(struct qeth_ipacmd_setadpparms));
4031         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4032         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4033         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4034         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4035                card->dev->dev_addr, OSA_ADDR_LEN);
4036         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4037                                NULL);
4038         return rc;
4039 }
4040 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4041
4042 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4043                 struct qeth_reply *reply, unsigned long data)
4044 {
4045         struct qeth_ipa_cmd *cmd;
4046         struct qeth_set_access_ctrl *access_ctrl_req;
4047
4048         QETH_CARD_TEXT(card, 4, "setaccb");
4049
4050         cmd = (struct qeth_ipa_cmd *) data;
4051         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4052         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4053         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4054         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4055                 cmd->data.setadapterparms.hdr.return_code);
4056         switch (cmd->data.setadapterparms.hdr.return_code) {
4057         case SET_ACCESS_CTRL_RC_SUCCESS:
4058         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4059         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4060         {
4061                 card->options.isolation = access_ctrl_req->subcmd_code;
4062                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4063                         dev_info(&card->gdev->dev,
4064                             "QDIO data connection isolation is deactivated\n");
4065                 } else {
4066                         dev_info(&card->gdev->dev,
4067                             "QDIO data connection isolation is activated\n");
4068                 }
4069                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
4070                         card->gdev->dev.kobj.name,
4071                         access_ctrl_req->subcmd_code,
4072                         cmd->data.setadapterparms.hdr.return_code);
4073                 break;
4074         }
4075         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4076         {
4077                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4078                         card->gdev->dev.kobj.name,
4079                         access_ctrl_req->subcmd_code,
4080                         cmd->data.setadapterparms.hdr.return_code);
4081                 dev_err(&card->gdev->dev, "Adapter does not "
4082                         "support QDIO data connection isolation\n");
4083
4084                 /* ensure isolation mode is "none" */
4085                 card->options.isolation = ISOLATION_MODE_NONE;
4086                 break;
4087         }
4088         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4089         {
4090                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4091                         card->gdev->dev.kobj.name,
4092                         access_ctrl_req->subcmd_code,
4093                         cmd->data.setadapterparms.hdr.return_code);
4094                 dev_err(&card->gdev->dev,
4095                         "Adapter is dedicated. "
4096                         "QDIO data connection isolation not supported\n");
4097
4098                 /* ensure isolation mode is "none" */
4099                 card->options.isolation = ISOLATION_MODE_NONE;
4100                 break;
4101         }
4102         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4103         {
4104                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4105                         card->gdev->dev.kobj.name,
4106                         access_ctrl_req->subcmd_code,
4107                         cmd->data.setadapterparms.hdr.return_code);
4108                 dev_err(&card->gdev->dev,
4109                         "TSO does not permit QDIO data connection isolation\n");
4110
4111                 /* ensure isolation mode is "none" */
4112                 card->options.isolation = ISOLATION_MODE_NONE;
4113                 break;
4114         }
4115         default:
4116         {
4117                 /* this should never happen */
4118                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
4119                         "==UNKNOWN\n",
4120                         card->gdev->dev.kobj.name,
4121                         access_ctrl_req->subcmd_code,
4122                         cmd->data.setadapterparms.hdr.return_code);
4123
4124                 /* ensure isolation mode is "none" */
4125                 card->options.isolation = ISOLATION_MODE_NONE;
4126                 break;
4127         }
4128         }
4129         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4130         return 0;
4131 }
4132
4133 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4134                 enum qeth_ipa_isolation_modes isolation)
4135 {
4136         int rc;
4137         struct qeth_cmd_buffer *iob;
4138         struct qeth_ipa_cmd *cmd;
4139         struct qeth_set_access_ctrl *access_ctrl_req;
4140
4141         QETH_CARD_TEXT(card, 4, "setacctl");
4142
4143         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4144         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4145
4146         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4147                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4148                                    sizeof(struct qeth_set_access_ctrl));
4149         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4150         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4151         access_ctrl_req->subcmd_code = isolation;
4152
4153         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4154                                NULL);
4155         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4156         return rc;
4157 }
4158
4159 int qeth_set_access_ctrl_online(struct qeth_card *card)
4160 {
4161         int rc = 0;
4162
4163         QETH_CARD_TEXT(card, 4, "setactlo");
4164
4165         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4166              card->info.type == QETH_CARD_TYPE_OSX) &&
4167              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4168                 rc = qeth_setadpparms_set_access_ctrl(card,
4169                         card->options.isolation);
4170                 if (rc) {
4171                         QETH_DBF_MESSAGE(3,
4172                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4173                                 card->gdev->dev.kobj.name,
4174                                 rc);
4175                 }
4176         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4177                 card->options.isolation = ISOLATION_MODE_NONE;
4178
4179                 dev_err(&card->gdev->dev, "Adapter does not "
4180                         "support QDIO data connection isolation\n");
4181                 rc = -EOPNOTSUPP;
4182         }
4183         return rc;
4184 }
4185 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4186
4187 void qeth_tx_timeout(struct net_device *dev)
4188 {
4189         struct qeth_card *card;
4190
4191         card = dev->ml_priv;
4192         QETH_CARD_TEXT(card, 4, "txtimeo");
4193         card->stats.tx_errors++;
4194         qeth_schedule_recovery(card);
4195 }
4196 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4197
4198 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4199 {
4200         struct qeth_card *card = dev->ml_priv;
4201         int rc = 0;
4202
4203         switch (regnum) {
4204         case MII_BMCR: /* Basic mode control register */
4205                 rc = BMCR_FULLDPLX;
4206                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4207                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4208                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4209                         rc |= BMCR_SPEED100;
4210                 break;
4211         case MII_BMSR: /* Basic mode status register */
4212                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4213                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4214                      BMSR_100BASE4;
4215                 break;
4216         case MII_PHYSID1: /* PHYS ID 1 */
4217                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4218                      dev->dev_addr[2];
4219                 rc = (rc >> 5) & 0xFFFF;
4220                 break;
4221         case MII_PHYSID2: /* PHYS ID 2 */
4222                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4223                 break;
4224         case MII_ADVERTISE: /* Advertisement control reg */
4225                 rc = ADVERTISE_ALL;
4226                 break;
4227         case MII_LPA: /* Link partner ability reg */
4228                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4229                      LPA_100BASE4 | LPA_LPACK;
4230                 break;
4231         case MII_EXPANSION: /* Expansion register */
4232                 break;
4233         case MII_DCOUNTER: /* disconnect counter */
4234                 break;
4235         case MII_FCSCOUNTER: /* false carrier counter */
4236                 break;
4237         case MII_NWAYTEST: /* N-way auto-neg test register */
4238                 break;
4239         case MII_RERRCOUNTER: /* rx error counter */
4240                 rc = card->stats.rx_errors;
4241                 break;
4242         case MII_SREVISION: /* silicon revision */
4243                 break;
4244         case MII_RESV1: /* reserved 1 */
4245                 break;
4246         case MII_LBRERROR: /* loopback, rx, bypass error */
4247                 break;
4248         case MII_PHYADDR: /* physical address */
4249                 break;
4250         case MII_RESV2: /* reserved 2 */
4251                 break;
4252         case MII_TPISTATUS: /* TPI status for 10mbps */
4253                 break;
4254         case MII_NCONFIG: /* network interface config */
4255                 break;
4256         default:
4257                 break;
4258         }
4259         return rc;
4260 }
4261 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4262
4263 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4264                 struct qeth_cmd_buffer *iob, int len,
4265                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4266                         unsigned long),
4267                 void *reply_param)
4268 {
4269         u16 s1, s2;
4270
4271         QETH_CARD_TEXT(card, 4, "sendsnmp");
4272
4273         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4274         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4275                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4276         /* adjust PDU length fields in IPA_PDU_HEADER */
4277         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4278         s2 = (u32) len;
4279         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4280         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4281         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4282         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4283         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4284                                       reply_cb, reply_param);
4285 }
4286
4287 static int qeth_snmp_command_cb(struct qeth_card *card,
4288                 struct qeth_reply *reply, unsigned long sdata)
4289 {
4290         struct qeth_ipa_cmd *cmd;
4291         struct qeth_arp_query_info *qinfo;
4292         struct qeth_snmp_cmd *snmp;
4293         unsigned char *data;
4294         __u16 data_len;
4295
4296         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4297
4298         cmd = (struct qeth_ipa_cmd *) sdata;
4299         data = (unsigned char *)((char *)cmd - reply->offset);
4300         qinfo = (struct qeth_arp_query_info *) reply->param;
4301         snmp = &cmd->data.setadapterparms.data.snmp;
4302
4303         if (cmd->hdr.return_code) {
4304                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4305                 return 0;
4306         }
4307         if (cmd->data.setadapterparms.hdr.return_code) {
4308                 cmd->hdr.return_code =
4309                         cmd->data.setadapterparms.hdr.return_code;
4310                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4311                 return 0;
4312         }
4313         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4314         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4315                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4316         else
4317                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4318
4319         /* check if there is enough room in userspace */
4320         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4321                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4322                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4323                 return 0;
4324         }
4325         QETH_CARD_TEXT_(card, 4, "snore%i",
4326                        cmd->data.setadapterparms.hdr.used_total);
4327         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4328                 cmd->data.setadapterparms.hdr.seq_no);
4329         /*copy entries to user buffer*/
4330         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4331                 memcpy(qinfo->udata + qinfo->udata_offset,
4332                        (char *)snmp,
4333                        data_len + offsetof(struct qeth_snmp_cmd, data));
4334                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4335         } else {
4336                 memcpy(qinfo->udata + qinfo->udata_offset,
4337                        (char *)&snmp->request, data_len);
4338         }
4339         qinfo->udata_offset += data_len;
4340         /* check if all replies received ... */
4341                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4342                                cmd->data.setadapterparms.hdr.used_total);
4343                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4344                                cmd->data.setadapterparms.hdr.seq_no);
4345         if (cmd->data.setadapterparms.hdr.seq_no <
4346             cmd->data.setadapterparms.hdr.used_total)
4347                 return 1;
4348         return 0;
4349 }
4350
4351 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4352 {
4353         struct qeth_cmd_buffer *iob;
4354         struct qeth_ipa_cmd *cmd;
4355         struct qeth_snmp_ureq *ureq;
4356         int req_len;
4357         struct qeth_arp_query_info qinfo = {0, };
4358         int rc = 0;
4359
4360         QETH_CARD_TEXT(card, 3, "snmpcmd");
4361
4362         if (card->info.guestlan)
4363                 return -EOPNOTSUPP;
4364
4365         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4366             (!card->options.layer2)) {
4367                 return -EOPNOTSUPP;
4368         }
4369         /* skip 4 bytes (data_len struct member) to get req_len */
4370         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4371                 return -EFAULT;
4372         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4373         if (IS_ERR(ureq)) {
4374                 QETH_CARD_TEXT(card, 2, "snmpnome");
4375                 return PTR_ERR(ureq);
4376         }
4377         qinfo.udata_len = ureq->hdr.data_len;
4378         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4379         if (!qinfo.udata) {
4380                 kfree(ureq);
4381                 return -ENOMEM;
4382         }
4383         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4384
4385         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4386                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4387         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4388         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4389         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4390                                     qeth_snmp_command_cb, (void *)&qinfo);
4391         if (rc)
4392                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4393                            QETH_CARD_IFNAME(card), rc);
4394         else {
4395                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4396                         rc = -EFAULT;
4397         }
4398
4399         kfree(ureq);
4400         kfree(qinfo.udata);
4401         return rc;
4402 }
4403 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4404
4405 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4406                 struct qeth_reply *reply, unsigned long data)
4407 {
4408         struct qeth_ipa_cmd *cmd;
4409         struct qeth_qoat_priv *priv;
4410         char *resdata;
4411         int resdatalen;
4412
4413         QETH_CARD_TEXT(card, 3, "qoatcb");
4414
4415         cmd = (struct qeth_ipa_cmd *)data;
4416         priv = (struct qeth_qoat_priv *)reply->param;
4417         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4418         resdata = (char *)data + 28;
4419
4420         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4421                 cmd->hdr.return_code = IPA_RC_FFFF;
4422                 return 0;
4423         }
4424
4425         memcpy((priv->buffer + priv->response_len), resdata,
4426                 resdatalen);
4427         priv->response_len += resdatalen;
4428
4429         if (cmd->data.setadapterparms.hdr.seq_no <
4430             cmd->data.setadapterparms.hdr.used_total)
4431                 return 1;
4432         return 0;
4433 }
4434
4435 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4436 {
4437         int rc = 0;
4438         struct qeth_cmd_buffer *iob;
4439         struct qeth_ipa_cmd *cmd;
4440         struct qeth_query_oat *oat_req;
4441         struct qeth_query_oat_data oat_data;
4442         struct qeth_qoat_priv priv;
4443         void __user *tmp;
4444
4445         QETH_CARD_TEXT(card, 3, "qoatcmd");
4446
4447         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4448                 rc = -EOPNOTSUPP;
4449                 goto out;
4450         }
4451
4452         if (copy_from_user(&oat_data, udata,
4453             sizeof(struct qeth_query_oat_data))) {
4454                         rc = -EFAULT;
4455                         goto out;
4456         }
4457
4458         priv.buffer_len = oat_data.buffer_len;
4459         priv.response_len = 0;
4460         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4461         if (!priv.buffer) {
4462                 rc = -ENOMEM;
4463                 goto out;
4464         }
4465
4466         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4467                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4468                                    sizeof(struct qeth_query_oat));
4469         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4470         oat_req = &cmd->data.setadapterparms.data.query_oat;
4471         oat_req->subcmd_code = oat_data.command;
4472
4473         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4474                                &priv);
4475         if (!rc) {
4476                 if (is_compat_task())
4477                         tmp = compat_ptr(oat_data.ptr);
4478                 else
4479                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4480
4481                 if (copy_to_user(tmp, priv.buffer,
4482                     priv.response_len)) {
4483                         rc = -EFAULT;
4484                         goto out_free;
4485                 }
4486
4487                 oat_data.response_len = priv.response_len;
4488
4489                 if (copy_to_user(udata, &oat_data,
4490                     sizeof(struct qeth_query_oat_data)))
4491                         rc = -EFAULT;
4492         } else
4493                 if (rc == IPA_RC_FFFF)
4494                         rc = -EFAULT;
4495
4496 out_free:
4497         kfree(priv.buffer);
4498 out:
4499         return rc;
4500 }
4501 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4502
4503 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4504 {
4505         switch (card->info.type) {
4506         case QETH_CARD_TYPE_IQD:
4507                 return 2;
4508         default:
4509                 return 0;
4510         }
4511 }
4512
4513 static void qeth_determine_capabilities(struct qeth_card *card)
4514 {
4515         int rc;
4516         int length;
4517         char *prcd;
4518         struct ccw_device *ddev;
4519         int ddev_offline = 0;
4520
4521         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4522         ddev = CARD_DDEV(card);
4523         if (!ddev->online) {
4524                 ddev_offline = 1;
4525                 rc = ccw_device_set_online(ddev);
4526                 if (rc) {
4527                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4528                         goto out;
4529                 }
4530         }
4531
4532         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4533         if (rc) {
4534                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4535                         dev_name(&card->gdev->dev), rc);
4536                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4537                 goto out_offline;
4538         }
4539         qeth_configure_unitaddr(card, prcd);
4540         if (ddev_offline)
4541                 qeth_configure_blkt_default(card, prcd);
4542         kfree(prcd);
4543
4544         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4545         if (rc)
4546                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4547
4548         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4549         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4550         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4551         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4552         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4553             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4554             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4555                 dev_info(&card->gdev->dev,
4556                         "Completion Queueing supported\n");
4557         } else {
4558                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4559         }
4560
4561
4562 out_offline:
4563         if (ddev_offline == 1)
4564                 ccw_device_set_offline(ddev);
4565 out:
4566         return;
4567 }
4568
4569 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4570         struct qdio_buffer **in_sbal_ptrs,
4571         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4572         int i;
4573
4574         if (card->options.cq == QETH_CQ_ENABLED) {
4575                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4576                              (card->qdio.no_in_queues - 1);
4577                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4578                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4579                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4580                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4581                 }
4582
4583                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4584         }
4585 }
4586
4587 static int qeth_qdio_establish(struct qeth_card *card)
4588 {
4589         struct qdio_initialize init_data;
4590         char *qib_param_field;
4591         struct qdio_buffer **in_sbal_ptrs;
4592         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4593         struct qdio_buffer **out_sbal_ptrs;
4594         int i, j, k;
4595         int rc = 0;
4596
4597         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4598
4599         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4600                               GFP_KERNEL);
4601         if (!qib_param_field) {
4602                 rc =  -ENOMEM;
4603                 goto out_free_nothing;
4604         }
4605
4606         qeth_create_qib_param_field(card, qib_param_field);
4607         qeth_create_qib_param_field_blkt(card, qib_param_field);
4608
4609         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4610                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4611                                GFP_KERNEL);
4612         if (!in_sbal_ptrs) {
4613                 rc = -ENOMEM;
4614                 goto out_free_qib_param;
4615         }
4616         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4617                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4618                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4619         }
4620
4621         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4622                                    GFP_KERNEL);
4623         if (!queue_start_poll) {
4624                 rc = -ENOMEM;
4625                 goto out_free_in_sbals;
4626         }
4627         for (i = 0; i < card->qdio.no_in_queues; ++i)
4628                 queue_start_poll[i] = card->discipline->start_poll;
4629
4630         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4631
4632         out_sbal_ptrs =
4633                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4634                         sizeof(void *), GFP_KERNEL);
4635         if (!out_sbal_ptrs) {
4636                 rc = -ENOMEM;
4637                 goto out_free_queue_start_poll;
4638         }
4639         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4640                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4641                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4642                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4643                 }
4644
4645         memset(&init_data, 0, sizeof(struct qdio_initialize));
4646         init_data.cdev                   = CARD_DDEV(card);
4647         init_data.q_format               = qeth_get_qdio_q_format(card);
4648         init_data.qib_param_field_format = 0;
4649         init_data.qib_param_field        = qib_param_field;
4650         init_data.no_input_qs            = card->qdio.no_in_queues;
4651         init_data.no_output_qs           = card->qdio.no_out_queues;
4652         init_data.input_handler          = card->discipline->input_handler;
4653         init_data.output_handler         = card->discipline->output_handler;
4654         init_data.queue_start_poll_array = queue_start_poll;
4655         init_data.int_parm               = (unsigned long) card;
4656         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4657         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4658         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4659         init_data.scan_threshold =
4660                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4661
4662         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4663                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4664                 rc = qdio_allocate(&init_data);
4665                 if (rc) {
4666                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4667                         goto out;
4668                 }
4669                 rc = qdio_establish(&init_data);
4670                 if (rc) {
4671                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4672                         qdio_free(CARD_DDEV(card));
4673                 }
4674         }
4675
4676         switch (card->options.cq) {
4677         case QETH_CQ_ENABLED:
4678                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4679                 break;
4680         case QETH_CQ_DISABLED:
4681                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4682                 break;
4683         default:
4684                 break;
4685         }
4686 out:
4687         kfree(out_sbal_ptrs);
4688 out_free_queue_start_poll:
4689         kfree(queue_start_poll);
4690 out_free_in_sbals:
4691         kfree(in_sbal_ptrs);
4692 out_free_qib_param:
4693         kfree(qib_param_field);
4694 out_free_nothing:
4695         return rc;
4696 }
4697
4698 static void qeth_core_free_card(struct qeth_card *card)
4699 {
4700
4701         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4702         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4703         qeth_clean_channel(&card->read);
4704         qeth_clean_channel(&card->write);
4705         if (card->dev)
4706                 free_netdev(card->dev);
4707         kfree(card->ip_tbd_list);
4708         qeth_free_qdio_buffers(card);
4709         unregister_service_level(&card->qeth_service_level);
4710         kfree(card);
4711 }
4712
4713 static struct ccw_device_id qeth_ids[] = {
4714         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4715                                         .driver_info = QETH_CARD_TYPE_OSD},
4716         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4717                                         .driver_info = QETH_CARD_TYPE_IQD},
4718         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4719                                         .driver_info = QETH_CARD_TYPE_OSN},
4720         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4721                                         .driver_info = QETH_CARD_TYPE_OSM},
4722         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4723                                         .driver_info = QETH_CARD_TYPE_OSX},
4724         {},
4725 };
4726 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4727
4728 static struct ccw_driver qeth_ccw_driver = {
4729         .driver = {
4730                 .owner = THIS_MODULE,
4731                 .name = "qeth",
4732         },
4733         .ids = qeth_ids,
4734         .probe = ccwgroup_probe_ccwdev,
4735         .remove = ccwgroup_remove_ccwdev,
4736 };
4737
4738 int qeth_core_hardsetup_card(struct qeth_card *card)
4739 {
4740         int retries = 0;
4741         int rc;
4742
4743         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4744         atomic_set(&card->force_alloc_skb, 0);
4745         qeth_get_channel_path_desc(card);
4746 retry:
4747         if (retries)
4748                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4749                         dev_name(&card->gdev->dev));
4750         ccw_device_set_offline(CARD_DDEV(card));
4751         ccw_device_set_offline(CARD_WDEV(card));
4752         ccw_device_set_offline(CARD_RDEV(card));
4753         rc = ccw_device_set_online(CARD_RDEV(card));
4754         if (rc)
4755                 goto retriable;
4756         rc = ccw_device_set_online(CARD_WDEV(card));
4757         if (rc)
4758                 goto retriable;
4759         rc = ccw_device_set_online(CARD_DDEV(card));
4760         if (rc)
4761                 goto retriable;
4762         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4763 retriable:
4764         if (rc == -ERESTARTSYS) {
4765                 QETH_DBF_TEXT(SETUP, 2, "break1");
4766                 return rc;
4767         } else if (rc) {
4768                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4769                 if (++retries > 3)
4770                         goto out;
4771                 else
4772                         goto retry;
4773         }
4774         qeth_determine_capabilities(card);
4775         qeth_init_tokens(card);
4776         qeth_init_func_level(card);
4777         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4778         if (rc == -ERESTARTSYS) {
4779                 QETH_DBF_TEXT(SETUP, 2, "break2");
4780                 return rc;
4781         } else if (rc) {
4782                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4783                 if (--retries < 0)
4784                         goto out;
4785                 else
4786                         goto retry;
4787         }
4788         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4789         if (rc == -ERESTARTSYS) {
4790                 QETH_DBF_TEXT(SETUP, 2, "break3");
4791                 return rc;
4792         } else if (rc) {
4793                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4794                 if (--retries < 0)
4795                         goto out;
4796                 else
4797                         goto retry;
4798         }
4799         card->read_or_write_problem = 0;
4800         rc = qeth_mpc_initialize(card);
4801         if (rc) {
4802                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4803                 goto out;
4804         }
4805
4806         card->options.ipa4.supported_funcs = 0;
4807         card->options.adp.supported_funcs = 0;
4808         card->info.diagass_support = 0;
4809         qeth_query_ipassists(card, QETH_PROT_IPV4);
4810         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4811                 qeth_query_setadapterparms(card);
4812         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4813                 qeth_query_setdiagass(card);
4814         return 0;
4815 out:
4816         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4817                 "an error on the device\n");
4818         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4819                 dev_name(&card->gdev->dev), rc);
4820         return rc;
4821 }
4822 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4823
4824 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4825                 struct qdio_buffer_element *element,
4826                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4827 {
4828         struct page *page = virt_to_page(element->addr);
4829         if (*pskb == NULL) {
4830                 if (qethbuffer->rx_skb) {
4831                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4832                         *pskb = qethbuffer->rx_skb;
4833                         qethbuffer->rx_skb = NULL;
4834                 } else {
4835                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4836                         if (!(*pskb))
4837                                 return -ENOMEM;
4838                 }
4839
4840                 skb_reserve(*pskb, ETH_HLEN);
4841                 if (data_len <= QETH_RX_PULL_LEN) {
4842                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4843                                 data_len);
4844                 } else {
4845                         get_page(page);
4846                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4847                                element->addr + offset, QETH_RX_PULL_LEN);
4848                         skb_fill_page_desc(*pskb, *pfrag, page,
4849                                 offset + QETH_RX_PULL_LEN,
4850                                 data_len - QETH_RX_PULL_LEN);
4851                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4852                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4853                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4854                         (*pfrag)++;
4855                 }
4856         } else {
4857                 get_page(page);
4858                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4859                 (*pskb)->data_len += data_len;
4860                 (*pskb)->len      += data_len;
4861                 (*pskb)->truesize += data_len;
4862                 (*pfrag)++;
4863         }
4864
4865
4866         return 0;
4867 }
4868
4869 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4870                 struct qeth_qdio_buffer *qethbuffer,
4871                 struct qdio_buffer_element **__element, int *__offset,
4872                 struct qeth_hdr **hdr)
4873 {
4874         struct qdio_buffer_element *element = *__element;
4875         struct qdio_buffer *buffer = qethbuffer->buffer;
4876         int offset = *__offset;
4877         struct sk_buff *skb = NULL;
4878         int skb_len = 0;
4879         void *data_ptr;
4880         int data_len;
4881         int headroom = 0;
4882         int use_rx_sg = 0;
4883         int frag = 0;
4884
4885         /* qeth_hdr must not cross element boundaries */
4886         if (element->length < offset + sizeof(struct qeth_hdr)) {
4887                 if (qeth_is_last_sbale(element))
4888                         return NULL;
4889                 element++;
4890                 offset = 0;
4891                 if (element->length < sizeof(struct qeth_hdr))
4892                         return NULL;
4893         }
4894         *hdr = element->addr + offset;
4895
4896         offset += sizeof(struct qeth_hdr);
4897         switch ((*hdr)->hdr.l2.id) {
4898         case QETH_HEADER_TYPE_LAYER2:
4899                 skb_len = (*hdr)->hdr.l2.pkt_length;
4900                 break;
4901         case QETH_HEADER_TYPE_LAYER3:
4902                 skb_len = (*hdr)->hdr.l3.length;
4903                 headroom = ETH_HLEN;
4904                 break;
4905         case QETH_HEADER_TYPE_OSN:
4906                 skb_len = (*hdr)->hdr.osn.pdu_length;
4907                 headroom = sizeof(struct qeth_hdr);
4908                 break;
4909         default:
4910                 break;
4911         }
4912
4913         if (!skb_len)
4914                 return NULL;
4915
4916         if (((skb_len >= card->options.rx_sg_cb) &&
4917              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4918              (!atomic_read(&card->force_alloc_skb))) ||
4919             (card->options.cq == QETH_CQ_ENABLED)) {
4920                 use_rx_sg = 1;
4921         } else {
4922                 skb = dev_alloc_skb(skb_len + headroom);
4923                 if (!skb)
4924                         goto no_mem;
4925                 if (headroom)
4926                         skb_reserve(skb, headroom);
4927         }
4928
4929         data_ptr = element->addr + offset;
4930         while (skb_len) {
4931                 data_len = min(skb_len, (int)(element->length - offset));
4932                 if (data_len) {
4933                         if (use_rx_sg) {
4934                                 if (qeth_create_skb_frag(qethbuffer, element,
4935                                     &skb, offset, &frag, data_len))
4936                                         goto no_mem;
4937                         } else {
4938                                 memcpy(skb_put(skb, data_len), data_ptr,
4939                                         data_len);
4940                         }
4941                 }
4942                 skb_len -= data_len;
4943                 if (skb_len) {
4944                         if (qeth_is_last_sbale(element)) {
4945                                 QETH_CARD_TEXT(card, 4, "unexeob");
4946                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4947                                 dev_kfree_skb_any(skb);
4948                                 card->stats.rx_errors++;
4949                                 return NULL;
4950                         }
4951                         element++;
4952                         offset = 0;
4953                         data_ptr = element->addr;
4954                 } else {
4955                         offset += data_len;
4956                 }
4957         }
4958         *__element = element;
4959         *__offset = offset;
4960         if (use_rx_sg && card->options.performance_stats) {
4961                 card->perf_stats.sg_skbs_rx++;
4962                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4963         }
4964         return skb;
4965 no_mem:
4966         if (net_ratelimit()) {
4967                 QETH_CARD_TEXT(card, 2, "noskbmem");
4968         }
4969         card->stats.rx_dropped++;
4970         return NULL;
4971 }
4972 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4973
4974 static void qeth_unregister_dbf_views(void)
4975 {
4976         int x;
4977         for (x = 0; x < QETH_DBF_INFOS; x++) {
4978                 debug_unregister(qeth_dbf[x].id);
4979                 qeth_dbf[x].id = NULL;
4980         }
4981 }
4982
4983 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4984 {
4985         char dbf_txt_buf[32];
4986         va_list args;
4987
4988         if (level > id->level)
4989                 return;
4990         va_start(args, fmt);
4991         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4992         va_end(args);
4993         debug_text_event(id, level, dbf_txt_buf);
4994 }
4995 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4996
4997 static int qeth_register_dbf_views(void)
4998 {
4999         int ret;
5000         int x;
5001
5002         for (x = 0; x < QETH_DBF_INFOS; x++) {
5003                 /* register the areas */
5004                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5005                                                 qeth_dbf[x].pages,
5006                                                 qeth_dbf[x].areas,
5007                                                 qeth_dbf[x].len);
5008                 if (qeth_dbf[x].id == NULL) {
5009                         qeth_unregister_dbf_views();
5010                         return -ENOMEM;
5011                 }
5012
5013                 /* register a view */
5014                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5015                 if (ret) {
5016                         qeth_unregister_dbf_views();
5017                         return ret;
5018                 }
5019
5020                 /* set a passing level */
5021                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5022         }
5023
5024         return 0;
5025 }
5026
5027 int qeth_core_load_discipline(struct qeth_card *card,
5028                 enum qeth_discipline_id discipline)
5029 {
5030         int rc = 0;
5031         mutex_lock(&qeth_mod_mutex);
5032         switch (discipline) {
5033         case QETH_DISCIPLINE_LAYER3:
5034                 card->discipline = try_then_request_module(
5035                         symbol_get(qeth_l3_discipline), "qeth_l3");
5036                 break;
5037         case QETH_DISCIPLINE_LAYER2:
5038                 card->discipline = try_then_request_module(
5039                         symbol_get(qeth_l2_discipline), "qeth_l2");
5040                 break;
5041         }
5042         if (!card->discipline) {
5043                 dev_err(&card->gdev->dev, "There is no kernel module to "
5044                         "support discipline %d\n", discipline);
5045                 rc = -EINVAL;
5046         }
5047         mutex_unlock(&qeth_mod_mutex);
5048         return rc;
5049 }
5050
5051 void qeth_core_free_discipline(struct qeth_card *card)
5052 {
5053         if (card->options.layer2)
5054                 symbol_put(qeth_l2_discipline);
5055         else
5056                 symbol_put(qeth_l3_discipline);
5057         card->discipline = NULL;
5058 }
5059
5060 static const struct device_type qeth_generic_devtype = {
5061         .name = "qeth_generic",
5062         .groups = qeth_generic_attr_groups,
5063 };
5064 static const struct device_type qeth_osn_devtype = {
5065         .name = "qeth_osn",
5066         .groups = qeth_osn_attr_groups,
5067 };
5068
5069 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5070 {
5071         struct qeth_card *card;
5072         struct device *dev;
5073         int rc;
5074         unsigned long flags;
5075         char dbf_name[20];
5076
5077         QETH_DBF_TEXT(SETUP, 2, "probedev");
5078
5079         dev = &gdev->dev;
5080         if (!get_device(dev))
5081                 return -ENODEV;
5082
5083         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5084
5085         card = qeth_alloc_card();
5086         if (!card) {
5087                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5088                 rc = -ENOMEM;
5089                 goto err_dev;
5090         }
5091
5092         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5093                 dev_name(&gdev->dev));
5094         card->debug = debug_register(dbf_name, 2, 1, 8);
5095         if (!card->debug) {
5096                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5097                 rc = -ENOMEM;
5098                 goto err_card;
5099         }
5100         debug_register_view(card->debug, &debug_hex_ascii_view);
5101
5102         card->read.ccwdev  = gdev->cdev[0];
5103         card->write.ccwdev = gdev->cdev[1];
5104         card->data.ccwdev  = gdev->cdev[2];
5105         dev_set_drvdata(&gdev->dev, card);
5106         card->gdev = gdev;
5107         gdev->cdev[0]->handler = qeth_irq;
5108         gdev->cdev[1]->handler = qeth_irq;
5109         gdev->cdev[2]->handler = qeth_irq;
5110
5111         rc = qeth_determine_card_type(card);
5112         if (rc) {
5113                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5114                 goto err_dbf;
5115         }
5116         rc = qeth_setup_card(card);
5117         if (rc) {
5118                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5119                 goto err_dbf;
5120         }
5121
5122         if (card->info.type == QETH_CARD_TYPE_OSN)
5123                 gdev->dev.type = &qeth_osn_devtype;
5124         else
5125                 gdev->dev.type = &qeth_generic_devtype;
5126
5127         switch (card->info.type) {
5128         case QETH_CARD_TYPE_OSN:
5129         case QETH_CARD_TYPE_OSM:
5130                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5131                 if (rc)
5132                         goto err_dbf;
5133                 rc = card->discipline->setup(card->gdev);
5134                 if (rc)
5135                         goto err_disc;
5136         case QETH_CARD_TYPE_OSD:
5137         case QETH_CARD_TYPE_OSX:
5138         default:
5139                 break;
5140         }
5141
5142         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5143         list_add_tail(&card->list, &qeth_core_card_list.list);
5144         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5145
5146         qeth_determine_capabilities(card);
5147         return 0;
5148
5149 err_disc:
5150         qeth_core_free_discipline(card);
5151 err_dbf:
5152         debug_unregister(card->debug);
5153 err_card:
5154         qeth_core_free_card(card);
5155 err_dev:
5156         put_device(dev);
5157         return rc;
5158 }
5159
5160 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5161 {
5162         unsigned long flags;
5163         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5164
5165         QETH_DBF_TEXT(SETUP, 2, "removedv");
5166
5167         if (card->discipline) {
5168                 card->discipline->remove(gdev);
5169                 qeth_core_free_discipline(card);
5170         }
5171
5172         debug_unregister(card->debug);
5173         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5174         list_del(&card->list);
5175         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5176         qeth_core_free_card(card);
5177         dev_set_drvdata(&gdev->dev, NULL);
5178         put_device(&gdev->dev);
5179         return;
5180 }
5181
5182 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5183 {
5184         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5185         int rc = 0;
5186         int def_discipline;
5187
5188         if (!card->discipline) {
5189                 if (card->info.type == QETH_CARD_TYPE_IQD)
5190                         def_discipline = QETH_DISCIPLINE_LAYER3;
5191                 else
5192                         def_discipline = QETH_DISCIPLINE_LAYER2;
5193                 rc = qeth_core_load_discipline(card, def_discipline);
5194                 if (rc)
5195                         goto err;
5196                 rc = card->discipline->setup(card->gdev);
5197                 if (rc)
5198                         goto err;
5199         }
5200         rc = card->discipline->set_online(gdev);
5201 err:
5202         return rc;
5203 }
5204
5205 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5206 {
5207         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5208         return card->discipline->set_offline(gdev);
5209 }
5210
5211 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5212 {
5213         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5214         if (card->discipline && card->discipline->shutdown)
5215                 card->discipline->shutdown(gdev);
5216 }
5217
5218 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5219 {
5220         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5221         if (card->discipline && card->discipline->prepare)
5222                 return card->discipline->prepare(gdev);
5223         return 0;
5224 }
5225
5226 static void qeth_core_complete(struct ccwgroup_device *gdev)
5227 {
5228         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5229         if (card->discipline && card->discipline->complete)
5230                 card->discipline->complete(gdev);
5231 }
5232
5233 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5234 {
5235         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5236         if (card->discipline && card->discipline->freeze)
5237                 return card->discipline->freeze(gdev);
5238         return 0;
5239 }
5240
5241 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5242 {
5243         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5244         if (card->discipline && card->discipline->thaw)
5245                 return card->discipline->thaw(gdev);
5246         return 0;
5247 }
5248
5249 static int qeth_core_restore(struct ccwgroup_device *gdev)
5250 {
5251         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5252         if (card->discipline && card->discipline->restore)
5253                 return card->discipline->restore(gdev);
5254         return 0;
5255 }
5256
5257 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5258         .driver = {
5259                 .owner = THIS_MODULE,
5260                 .name = "qeth",
5261         },
5262         .setup = qeth_core_probe_device,
5263         .remove = qeth_core_remove_device,
5264         .set_online = qeth_core_set_online,
5265         .set_offline = qeth_core_set_offline,
5266         .shutdown = qeth_core_shutdown,
5267         .prepare = qeth_core_prepare,
5268         .complete = qeth_core_complete,
5269         .freeze = qeth_core_freeze,
5270         .thaw = qeth_core_thaw,
5271         .restore = qeth_core_restore,
5272 };
5273
5274 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5275                                             const char *buf, size_t count)
5276 {
5277         int err;
5278
5279         err = ccwgroup_create_dev(qeth_core_root_dev,
5280                                   &qeth_core_ccwgroup_driver, 3, buf);
5281
5282         return err ? err : count;
5283 }
5284 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5285
5286 static struct attribute *qeth_drv_attrs[] = {
5287         &driver_attr_group.attr,
5288         NULL,
5289 };
5290 static struct attribute_group qeth_drv_attr_group = {
5291         .attrs = qeth_drv_attrs,
5292 };
5293 static const struct attribute_group *qeth_drv_attr_groups[] = {
5294         &qeth_drv_attr_group,
5295         NULL,
5296 };
5297
5298 static struct {
5299         const char str[ETH_GSTRING_LEN];
5300 } qeth_ethtool_stats_keys[] = {
5301 /*  0 */{"rx skbs"},
5302         {"rx buffers"},
5303         {"tx skbs"},
5304         {"tx buffers"},
5305         {"tx skbs no packing"},
5306         {"tx buffers no packing"},
5307         {"tx skbs packing"},
5308         {"tx buffers packing"},
5309         {"tx sg skbs"},
5310         {"tx sg frags"},
5311 /* 10 */{"rx sg skbs"},
5312         {"rx sg frags"},
5313         {"rx sg page allocs"},
5314         {"tx large kbytes"},
5315         {"tx large count"},
5316         {"tx pk state ch n->p"},
5317         {"tx pk state ch p->n"},
5318         {"tx pk watermark low"},
5319         {"tx pk watermark high"},
5320         {"queue 0 buffer usage"},
5321 /* 20 */{"queue 1 buffer usage"},
5322         {"queue 2 buffer usage"},
5323         {"queue 3 buffer usage"},
5324         {"rx poll time"},
5325         {"rx poll count"},
5326         {"rx do_QDIO time"},
5327         {"rx do_QDIO count"},
5328         {"tx handler time"},
5329         {"tx handler count"},
5330         {"tx time"},
5331 /* 30 */{"tx count"},
5332         {"tx do_QDIO time"},
5333         {"tx do_QDIO count"},
5334         {"tx csum"},
5335         {"tx lin"},
5336         {"cq handler count"},
5337         {"cq handler time"}
5338 };
5339
5340 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5341 {
5342         switch (stringset) {
5343         case ETH_SS_STATS:
5344                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5345         default:
5346                 return -EINVAL;
5347         }
5348 }
5349 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5350
5351 void qeth_core_get_ethtool_stats(struct net_device *dev,
5352                 struct ethtool_stats *stats, u64 *data)
5353 {
5354         struct qeth_card *card = dev->ml_priv;
5355         data[0] = card->stats.rx_packets -
5356                                 card->perf_stats.initial_rx_packets;
5357         data[1] = card->perf_stats.bufs_rec;
5358         data[2] = card->stats.tx_packets -
5359                                 card->perf_stats.initial_tx_packets;
5360         data[3] = card->perf_stats.bufs_sent;
5361         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5362                         - card->perf_stats.skbs_sent_pack;
5363         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5364         data[6] = card->perf_stats.skbs_sent_pack;
5365         data[7] = card->perf_stats.bufs_sent_pack;
5366         data[8] = card->perf_stats.sg_skbs_sent;
5367         data[9] = card->perf_stats.sg_frags_sent;
5368         data[10] = card->perf_stats.sg_skbs_rx;
5369         data[11] = card->perf_stats.sg_frags_rx;
5370         data[12] = card->perf_stats.sg_alloc_page_rx;
5371         data[13] = (card->perf_stats.large_send_bytes >> 10);
5372         data[14] = card->perf_stats.large_send_cnt;
5373         data[15] = card->perf_stats.sc_dp_p;
5374         data[16] = card->perf_stats.sc_p_dp;
5375         data[17] = QETH_LOW_WATERMARK_PACK;
5376         data[18] = QETH_HIGH_WATERMARK_PACK;
5377         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5378         data[20] = (card->qdio.no_out_queues > 1) ?
5379                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5380         data[21] = (card->qdio.no_out_queues > 2) ?
5381                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5382         data[22] = (card->qdio.no_out_queues > 3) ?
5383                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5384         data[23] = card->perf_stats.inbound_time;
5385         data[24] = card->perf_stats.inbound_cnt;
5386         data[25] = card->perf_stats.inbound_do_qdio_time;
5387         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5388         data[27] = card->perf_stats.outbound_handler_time;
5389         data[28] = card->perf_stats.outbound_handler_cnt;
5390         data[29] = card->perf_stats.outbound_time;
5391         data[30] = card->perf_stats.outbound_cnt;
5392         data[31] = card->perf_stats.outbound_do_qdio_time;
5393         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5394         data[33] = card->perf_stats.tx_csum;
5395         data[34] = card->perf_stats.tx_lin;
5396         data[35] = card->perf_stats.cq_cnt;
5397         data[36] = card->perf_stats.cq_time;
5398 }
5399 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5400
5401 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5402 {
5403         switch (stringset) {
5404         case ETH_SS_STATS:
5405                 memcpy(data, &qeth_ethtool_stats_keys,
5406                         sizeof(qeth_ethtool_stats_keys));
5407                 break;
5408         default:
5409                 WARN_ON(1);
5410                 break;
5411         }
5412 }
5413 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5414
5415 void qeth_core_get_drvinfo(struct net_device *dev,
5416                 struct ethtool_drvinfo *info)
5417 {
5418         struct qeth_card *card = dev->ml_priv;
5419         if (card->options.layer2)
5420                 strcpy(info->driver, "qeth_l2");
5421         else
5422                 strcpy(info->driver, "qeth_l3");
5423
5424         strcpy(info->version, "1.0");
5425         strcpy(info->fw_version, card->info.mcl_level);
5426         sprintf(info->bus_info, "%s/%s/%s",
5427                         CARD_RDEV_ID(card),
5428                         CARD_WDEV_ID(card),
5429                         CARD_DDEV_ID(card));
5430 }
5431 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5432
5433 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5434                                         struct ethtool_cmd *ecmd)
5435 {
5436         struct qeth_card *card = netdev->ml_priv;
5437         enum qeth_link_types link_type;
5438
5439         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5440                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5441         else
5442                 link_type = card->info.link_type;
5443
5444         ecmd->transceiver = XCVR_INTERNAL;
5445         ecmd->supported = SUPPORTED_Autoneg;
5446         ecmd->advertising = ADVERTISED_Autoneg;
5447         ecmd->duplex = DUPLEX_FULL;
5448         ecmd->autoneg = AUTONEG_ENABLE;
5449
5450         switch (link_type) {
5451         case QETH_LINK_TYPE_FAST_ETH:
5452         case QETH_LINK_TYPE_LANE_ETH100:
5453                 ecmd->supported |= SUPPORTED_10baseT_Half |
5454                                         SUPPORTED_10baseT_Full |
5455                                         SUPPORTED_100baseT_Half |
5456                                         SUPPORTED_100baseT_Full |
5457                                         SUPPORTED_TP;
5458                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5459                                         ADVERTISED_10baseT_Full |
5460                                         ADVERTISED_100baseT_Half |
5461                                         ADVERTISED_100baseT_Full |
5462                                         ADVERTISED_TP;
5463                 ecmd->speed = SPEED_100;
5464                 ecmd->port = PORT_TP;
5465                 break;
5466
5467         case QETH_LINK_TYPE_GBIT_ETH:
5468         case QETH_LINK_TYPE_LANE_ETH1000:
5469                 ecmd->supported |= SUPPORTED_10baseT_Half |
5470                                         SUPPORTED_10baseT_Full |
5471                                         SUPPORTED_100baseT_Half |
5472                                         SUPPORTED_100baseT_Full |
5473                                         SUPPORTED_1000baseT_Half |
5474                                         SUPPORTED_1000baseT_Full |
5475                                         SUPPORTED_FIBRE;
5476                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5477                                         ADVERTISED_10baseT_Full |
5478                                         ADVERTISED_100baseT_Half |
5479                                         ADVERTISED_100baseT_Full |
5480                                         ADVERTISED_1000baseT_Half |
5481                                         ADVERTISED_1000baseT_Full |
5482                                         ADVERTISED_FIBRE;
5483                 ecmd->speed = SPEED_1000;
5484                 ecmd->port = PORT_FIBRE;
5485                 break;
5486
5487         case QETH_LINK_TYPE_10GBIT_ETH:
5488                 ecmd->supported |= SUPPORTED_10baseT_Half |
5489                                         SUPPORTED_10baseT_Full |
5490                                         SUPPORTED_100baseT_Half |
5491                                         SUPPORTED_100baseT_Full |
5492                                         SUPPORTED_1000baseT_Half |
5493                                         SUPPORTED_1000baseT_Full |
5494                                         SUPPORTED_10000baseT_Full |
5495                                         SUPPORTED_FIBRE;
5496                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5497                                         ADVERTISED_10baseT_Full |
5498                                         ADVERTISED_100baseT_Half |
5499                                         ADVERTISED_100baseT_Full |
5500                                         ADVERTISED_1000baseT_Half |
5501                                         ADVERTISED_1000baseT_Full |
5502                                         ADVERTISED_10000baseT_Full |
5503                                         ADVERTISED_FIBRE;
5504                 ecmd->speed = SPEED_10000;
5505                 ecmd->port = PORT_FIBRE;
5506                 break;
5507
5508         default:
5509                 ecmd->supported |= SUPPORTED_10baseT_Half |
5510                                         SUPPORTED_10baseT_Full |
5511                                         SUPPORTED_TP;
5512                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5513                                         ADVERTISED_10baseT_Full |
5514                                         ADVERTISED_TP;
5515                 ecmd->speed = SPEED_10;
5516                 ecmd->port = PORT_TP;
5517         }
5518
5519         return 0;
5520 }
5521 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5522
5523 static int __init qeth_core_init(void)
5524 {
5525         int rc;
5526
5527         pr_info("loading core functions\n");
5528         INIT_LIST_HEAD(&qeth_core_card_list.list);
5529         rwlock_init(&qeth_core_card_list.rwlock);
5530         mutex_init(&qeth_mod_mutex);
5531
5532         rc = qeth_register_dbf_views();
5533         if (rc)
5534                 goto out_err;
5535         qeth_core_root_dev = root_device_register("qeth");
5536         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5537         if (rc)
5538                 goto register_err;
5539         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5540                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5541         if (!qeth_core_header_cache) {
5542                 rc = -ENOMEM;
5543                 goto slab_err;
5544         }
5545         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5546                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5547         if (!qeth_qdio_outbuf_cache) {
5548                 rc = -ENOMEM;
5549                 goto cqslab_err;
5550         }
5551         rc = ccw_driver_register(&qeth_ccw_driver);
5552         if (rc)
5553                 goto ccw_err;
5554         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5555         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5556         if (rc)
5557                 goto ccwgroup_err;
5558
5559         return 0;
5560
5561 ccwgroup_err:
5562         ccw_driver_unregister(&qeth_ccw_driver);
5563 ccw_err:
5564         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5565 cqslab_err:
5566         kmem_cache_destroy(qeth_core_header_cache);
5567 slab_err:
5568         root_device_unregister(qeth_core_root_dev);
5569 register_err:
5570         qeth_unregister_dbf_views();
5571 out_err:
5572         pr_err("Initializing the qeth device driver failed\n");
5573         return rc;
5574 }
5575
5576 static void __exit qeth_core_exit(void)
5577 {
5578         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5579         ccw_driver_unregister(&qeth_ccw_driver);
5580         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5581         kmem_cache_destroy(qeth_core_header_cache);
5582         root_device_unregister(qeth_core_root_dev);
5583         qeth_unregister_dbf_views();
5584         pr_info("core functions removed\n");
5585 }
5586
5587 module_init(qeth_core_init);
5588 module_exit(qeth_core_exit);
5589 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5590 MODULE_DESCRIPTION("qeth core functions");
5591 MODULE_LICENSE("GPL");