drivers/s390/net/qeth_core_main.c

   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/tcp.h>
  21 #include <linux/mii.h>
  22 #include <linux/kthread.h>
  23 #include <linux/slab.h>
  24 #include <net/iucv/af_iucv.h>
  25
  26 #include <asm/ebcdic.h>
  27 #include <asm/io.h>
  28 #include <asm/sysinfo.h>
  29 #include <asm/compat.h>
  30
  31 #include "qeth_core.h"
  32
  33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  34         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  35         /*                   N  P  A    M  L  V                      H  */
  36         [QETH_DBF_SETUP] = {"qeth_setup",
  37                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg",
  39                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  40         [QETH_DBF_CTRL]  = {"qeth_control",
  41                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  42 };
  43 EXPORT_SYMBOL_GPL(qeth_dbf);
  44
  45 struct qeth_card_list_struct qeth_core_card_list;
  46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  47 struct kmem_cache *qeth_core_header_cache;
  48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  49 static struct kmem_cache *qeth_qdio_outbuf_cache;
  50
  51 static struct device *qeth_core_root_dev;
  52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  53 static struct lock_class_key qdio_out_skb_queue_key;
  54 static struct mutex qeth_mod_mutex;
  55
  56 static void qeth_send_control_data_cb(struct qeth_channel *,
  57                         struct qeth_cmd_buffer *);
  58 static int qeth_issue_next_read(struct qeth_card *);
  59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  61 static void qeth_free_buffer_pool(struct qeth_card *);
  62 static int qeth_qdio_establish(struct qeth_card *);
  63 static void qeth_free_qdio_buffers(struct qeth_card *);
  64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  65                 struct qeth_qdio_out_buffer *buf,
  66                 enum iucv_tx_notify notification);
  67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  69                 struct qeth_qdio_out_buffer *buf,
  70                 enum qeth_qdio_buffer_states newbufstate);
  71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  72
  73 static inline const char *qeth_get_cardname(struct qeth_card *card)
  74 {
  75         if (card->info.guestlan) {
  76                 switch (card->info.type) {
  77                 case QETH_CARD_TYPE_OSD:
  78                         return " Guest LAN QDIO";
  79                 case QETH_CARD_TYPE_IQD:
  80                         return " Guest LAN Hiper";
  81                 case QETH_CARD_TYPE_OSM:
  82                         return " Guest LAN QDIO - OSM";
  83                 case QETH_CARD_TYPE_OSX:
  84                         return " Guest LAN QDIO - OSX";
  85                 default:
  86                         return " unknown";
  87                 }
  88         } else {
  89                 switch (card->info.type) {
  90                 case QETH_CARD_TYPE_OSD:
  91                         return " OSD Express";
  92                 case QETH_CARD_TYPE_IQD:
  93                         return " HiperSockets";
  94                 case QETH_CARD_TYPE_OSN:
  95                         return " OSN QDIO";
  96                 case QETH_CARD_TYPE_OSM:
  97                         return " OSM QDIO";
  98                 case QETH_CARD_TYPE_OSX:
  99                         return " OSX QDIO";
 100                 default:
 101                         return " unknown";
 102                 }
 103         }
 104         return " n/a";
 105 }
 106
 107 /* max length to be returned: 14 */
 108 const char *qeth_get_cardname_short(struct qeth_card *card)
 109 {
 110         if (card->info.guestlan) {
 111                 switch (card->info.type) {
 112                 case QETH_CARD_TYPE_OSD:
 113                         return "GuestLAN QDIO";
 114                 case QETH_CARD_TYPE_IQD:
 115                         return "GuestLAN Hiper";
 116                 case QETH_CARD_TYPE_OSM:
 117                         return "GuestLAN OSM";
 118                 case QETH_CARD_TYPE_OSX:
 119                         return "GuestLAN OSX";
 120                 default:
 121                         return "unknown";
 122                 }
 123         } else {
 124                 switch (card->info.type) {
 125                 case QETH_CARD_TYPE_OSD:
 126                         switch (card->info.link_type) {
 127                         case QETH_LINK_TYPE_FAST_ETH:
 128                                 return "OSD_100";
 129                         case QETH_LINK_TYPE_HSTR:
 130                                 return "HSTR";
 131                         case QETH_LINK_TYPE_GBIT_ETH:
 132                                 return "OSD_1000";
 133                         case QETH_LINK_TYPE_10GBIT_ETH:
 134                                 return "OSD_10GIG";
 135                         case QETH_LINK_TYPE_LANE_ETH100:
 136                                 return "OSD_FE_LANE";
 137                         case QETH_LINK_TYPE_LANE_TR:
 138                                 return "OSD_TR_LANE";
 139                         case QETH_LINK_TYPE_LANE_ETH1000:
 140                                 return "OSD_GbE_LANE";
 141                         case QETH_LINK_TYPE_LANE:
 142                                 return "OSD_ATM_LANE";
 143                         default:
 144                                 return "OSD_Express";
 145                         }
 146                 case QETH_CARD_TYPE_IQD:
 147                         return "HiperSockets";
 148                 case QETH_CARD_TYPE_OSN:
 149                         return "OSN";
 150                 case QETH_CARD_TYPE_OSM:
 151                         return "OSM_1000";
 152                 case QETH_CARD_TYPE_OSX:
 153                         return "OSX_10GIG";
 154                 default:
 155                         return "unknown";
 156                 }
 157         }
 158         return "n/a";
 159 }
 160
 161 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 162                          int clear_start_mask)
 163 {
 164         unsigned long flags;
 165
 166         spin_lock_irqsave(&card->thread_mask_lock, flags);
 167         card->thread_allowed_mask = threads;
 168         if (clear_start_mask)
 169                 card->thread_start_mask &= threads;
 170         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 171         wake_up(&card->wait_q);
 172 }
 173 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 174
 175 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 176 {
 177         unsigned long flags;
 178         int rc = 0;
 179
 180         spin_lock_irqsave(&card->thread_mask_lock, flags);
 181         rc = (card->thread_running_mask & threads);
 182         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 183         return rc;
 184 }
 185 EXPORT_SYMBOL_GPL(qeth_threads_running);
 186
 187 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 188 {
 189         return wait_event_interruptible(card->wait_q,
 190                         qeth_threads_running(card, threads) == 0);
 191 }
 192 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 193
 194 void qeth_clear_working_pool_list(struct qeth_card *card)
 195 {
 196         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 197
 198         QETH_CARD_TEXT(card, 5, "clwrklst");
 199         list_for_each_entry_safe(pool_entry, tmp,
 200                             &card->qdio.in_buf_pool.entry_list, list){
 201                         list_del(&pool_entry->list);
 202         }
 203 }
 204 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 205
 206 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 207 {
 208         struct qeth_buffer_pool_entry *pool_entry;
 209         void *ptr;
 210         int i, j;
 211
 212         QETH_CARD_TEXT(card, 5, "alocpool");
 213         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 214                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 215                 if (!pool_entry) {
 216                         qeth_free_buffer_pool(card);
 217                         return -ENOMEM;
 218                 }
 219                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 220                         ptr = (void *) __get_free_page(GFP_KERNEL);
 221                         if (!ptr) {
 222                                 while (j > 0)
 223                                         free_page((unsigned long)
 224                                                   pool_entry->elements[--j]);
 225                                 kfree(pool_entry);
 226                                 qeth_free_buffer_pool(card);
 227                                 return -ENOMEM;
 228                         }
 229                         pool_entry->elements[j] = ptr;
 230                 }
 231                 list_add(&pool_entry->init_list,
 232                          &card->qdio.init_pool.entry_list);
 233         }
 234         return 0;
 235 }
 236
 237 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 238 {
 239         QETH_CARD_TEXT(card, 2, "realcbp");
 240
 241         if ((card->state != CARD_STATE_DOWN) &&
 242             (card->state != CARD_STATE_RECOVER))
 243                 return -EPERM;
 244
 245         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 246         qeth_clear_working_pool_list(card);
 247         qeth_free_buffer_pool(card);
 248         card->qdio.in_buf_pool.buf_count = bufcnt;
 249         card->qdio.init_pool.buf_count = bufcnt;
 250         return qeth_alloc_buffer_pool(card);
 251 }
 252 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 253
 254 static inline int qeth_cq_init(struct qeth_card *card)
 255 {
 256         int rc;
 257
 258         if (card->options.cq == QETH_CQ_ENABLED) {
 259                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 260                 memset(card->qdio.c_q->qdio_bufs, 0,
 261                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
 262                 card->qdio.c_q->next_buf_to_init = 127;
 263                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 264                              card->qdio.no_in_queues - 1, 0,
 265                              127);
 266                 if (rc) {
 267                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 268                         goto out;
 269                 }
 270         }
 271         rc = 0;
 272 out:
 273         return rc;
 274 }
 275
 276 static inline int qeth_alloc_cq(struct qeth_card *card)
 277 {
 278         int rc;
 279
 280         if (card->options.cq == QETH_CQ_ENABLED) {
 281                 int i;
 282                 struct qdio_outbuf_state *outbuf_states;
 283
 284                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 285                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
 286                                          GFP_KERNEL);
 287                 if (!card->qdio.c_q) {
 288                         rc = -1;
 289                         goto kmsg_out;
 290                 }
 291                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
 292
 293                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
 294                         card->qdio.c_q->bufs[i].buffer =
 295                                 &card->qdio.c_q->qdio_bufs[i];
 296                 }
 297
 298                 card->qdio.no_in_queues = 2;
 299
 300                 card->qdio.out_bufstates = (struct qdio_outbuf_state *)
 301                         kzalloc(card->qdio.no_out_queues *
 302                                 QDIO_MAX_BUFFERS_PER_Q *
 303                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 304                 outbuf_states = card->qdio.out_bufstates;
 305                 if (outbuf_states == NULL) {
 306                         rc = -1;
 307                         goto free_cq_out;
 308                 }
 309                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 310                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 311                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 312                 }
 313         } else {
 314                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 315                 card->qdio.c_q = NULL;
 316                 card->qdio.no_in_queues = 1;
 317         }
 318         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 319         rc = 0;
 320 out:
 321         return rc;
 322 free_cq_out:
 323         kfree(card->qdio.c_q);
 324         card->qdio.c_q = NULL;
 325 kmsg_out:
 326         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 327         goto out;
 328 }
 329
 330 static inline void qeth_free_cq(struct qeth_card *card)
 331 {
 332         if (card->qdio.c_q) {
 333                 --card->qdio.no_in_queues;
 334                 kfree(card->qdio.c_q);
 335                 card->qdio.c_q = NULL;
 336         }
 337         kfree(card->qdio.out_bufstates);
 338         card->qdio.out_bufstates = NULL;
 339 }
 340
 341 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 342         int delayed) {
 343         enum iucv_tx_notify n;
 344
 345         switch (sbalf15) {
 346         case 0:
 347                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 348                 break;
 349         case 4:
 350         case 16:
 351         case 17:
 352         case 18:
 353                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 354                         TX_NOTIFY_UNREACHABLE;
 355                 break;
 356         default:
 357                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 358                         TX_NOTIFY_GENERALERROR;
 359                 break;
 360         }
 361
 362         return n;
 363 }
 364
 365 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 366         int bidx, int forced_cleanup)
 367 {
 368         if (q->card->options.cq != QETH_CQ_ENABLED)
 369                 return;
 370
 371         if (q->bufs[bidx]->next_pending != NULL) {
 372                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 373                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 374
 375                 while (c) {
 376                         if (forced_cleanup ||
 377                             atomic_read(&c->state) ==
 378                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 379                                 struct qeth_qdio_out_buffer *f = c;
 380                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 381                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 382                                 /* release here to avoid interleaving between
 383                                    outbound tasklet and inbound tasklet
 384                                    regarding notifications and lifecycle */
 385                                 qeth_release_skbs(c);
 386
 387                                 c = f->next_pending;
 388                                 BUG_ON(head->next_pending != f);
 389                                 head->next_pending = c;
 390                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 391                         } else {
 392                                 head = c;
 393                                 c = c->next_pending;
 394                         }
 395
 396                 }
 397         }
 398         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 399                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 400                 /* for recovery situations */
 401                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 402                 qeth_init_qdio_out_buf(q, bidx);
 403                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 404         }
 405 }
 406
 407
 408 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 409                 unsigned long phys_aob_addr) {
 410         struct qaob *aob;
 411         struct qeth_qdio_out_buffer *buffer;
 412         enum iucv_tx_notify notification;
 413
 414         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 415         QETH_CARD_TEXT(card, 5, "haob");
 416         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 417         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 418         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 419
 420         BUG_ON(buffer == NULL);
 421
 422         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 423                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 424                 notification = TX_NOTIFY_OK;
 425         } else {
 426                 BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
 427                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 428                 notification = TX_NOTIFY_DELAYED_OK;
 429         }
 430
 431         if (aob->aorc != 0)  {
 432                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 433                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 434         }
 435         qeth_notify_skbs(buffer->q, buffer, notification);
 436
 437         buffer->aob = NULL;
 438         qeth_clear_output_buffer(buffer->q, buffer,
 439                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 440
 441         /* from here on: do not touch buffer anymore */
 442         qdio_release_aob(aob);
 443 }
 444
 445 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 446 {
 447         return card->options.cq == QETH_CQ_ENABLED &&
 448             card->qdio.c_q != NULL &&
 449             queue != 0 &&
 450             queue == card->qdio.no_in_queues - 1;
 451 }
 452
 453
 454 static int qeth_issue_next_read(struct qeth_card *card)
 455 {
 456         int rc;
 457         struct qeth_cmd_buffer *iob;
 458
 459         QETH_CARD_TEXT(card, 5, "issnxrd");
 460         if (card->read.state != CH_STATE_UP)
 461                 return -EIO;
 462         iob = qeth_get_buffer(&card->read);
 463         if (!iob) {
 464                 dev_warn(&card->gdev->dev, "The qeth device driver "
 465                         "failed to recover an error on the device\n");
 466                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 467                         "available\n", dev_name(&card->gdev->dev));
 468                 return -ENOMEM;
 469         }
 470         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 471         QETH_CARD_TEXT(card, 6, "noirqpnd");
 472         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 473                               (addr_t) iob, 0, 0);
 474         if (rc) {
 475                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 476                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 477                 atomic_set(&card->read.irq_pending, 0);
 478                 card->read_or_write_problem = 1;
 479                 qeth_schedule_recovery(card);
 480                 wake_up(&card->wait_q);
 481         }
 482         return rc;
 483 }
 484
 485 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 486 {
 487         struct qeth_reply *reply;
 488
 489         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 490         if (reply) {
 491                 atomic_set(&reply->refcnt, 1);
 492                 atomic_set(&reply->received, 0);
 493                 reply->card = card;
 494         };
 495         return reply;
 496 }
 497
 498 static void qeth_get_reply(struct qeth_reply *reply)
 499 {
 500         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 501         atomic_inc(&reply->refcnt);
 502 }
 503
 504 static void qeth_put_reply(struct qeth_reply *reply)
 505 {
 506         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 507         if (atomic_dec_and_test(&reply->refcnt))
 508                 kfree(reply);
 509 }
 510
 511 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 512                 struct qeth_card *card)
 513 {
 514         char *ipa_name;
 515         int com = cmd->hdr.command;
 516         ipa_name = qeth_get_ipa_cmd_name(com);
 517         if (rc)
 518                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 519                                 "x%X \"%s\"\n",
 520                                 ipa_name, com, dev_name(&card->gdev->dev),
 521                                 QETH_CARD_IFNAME(card), rc,
 522                                 qeth_get_ipa_msg(rc));
 523         else
 524                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 525                                 ipa_name, com, dev_name(&card->gdev->dev),
 526                                 QETH_CARD_IFNAME(card));
 527 }
 528
 529 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 530                 struct qeth_cmd_buffer *iob)
 531 {
 532         struct qeth_ipa_cmd *cmd = NULL;
 533
 534         QETH_CARD_TEXT(card, 5, "chkipad");
 535         if (IS_IPA(iob->data)) {
 536                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 537                 if (IS_IPA_REPLY(cmd)) {
 538                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 539                             cmd->hdr.command != IPA_CMD_DELCCID &&
 540                             cmd->hdr.command != IPA_CMD_MODCCID &&
 541                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 542                                 qeth_issue_ipa_msg(cmd,
 543                                                 cmd->hdr.return_code, card);
 544                         return cmd;
 545                 } else {
 546                         switch (cmd->hdr.command) {
 547                         case IPA_CMD_STOPLAN:
 548                                 dev_warn(&card->gdev->dev,
 549                                            "The link for interface %s on CHPID"
 550                                            " 0x%X failed\n",
 551                                            QETH_CARD_IFNAME(card),
 552                                            card->info.chpid);
 553                                 card->lan_online = 0;
 554                                 if (card->dev && netif_carrier_ok(card->dev))
 555                                         netif_carrier_off(card->dev);
 556                                 return NULL;
 557                         case IPA_CMD_STARTLAN:
 558                                 dev_info(&card->gdev->dev,
 559                                            "The link for %s on CHPID 0x%X has"
 560                                            " been restored\n",
 561                                            QETH_CARD_IFNAME(card),
 562                                            card->info.chpid);
 563                                 netif_carrier_on(card->dev);
 564                                 card->lan_online = 1;
 565                                 if (card->info.hwtrap)
 566                                         card->info.hwtrap = 2;
 567                                 qeth_schedule_recovery(card);
 568                                 return NULL;
 569                         case IPA_CMD_MODCCID:
 570                                 return cmd;
 571                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 572                                 QETH_CARD_TEXT(card, 3, "irla");
 573                                 break;
 574                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 575                                 QETH_CARD_TEXT(card, 3, "urla");
 576                                 break;
 577                         default:
 578                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 579                                            "but not a reply!\n");
 580                                 break;
 581                         }
 582                 }
 583         }
 584         return cmd;
 585 }
 586
 587 void qeth_clear_ipacmd_list(struct qeth_card *card)
 588 {
 589         struct qeth_reply *reply, *r;
 590         unsigned long flags;
 591
 592         QETH_CARD_TEXT(card, 4, "clipalst");
 593
 594         spin_lock_irqsave(&card->lock, flags);
 595         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 596                 qeth_get_reply(reply);
 597                 reply->rc = -EIO;
 598                 atomic_inc(&reply->received);
 599                 list_del_init(&reply->list);
 600                 wake_up(&reply->wait_q);
 601                 qeth_put_reply(reply);
 602         }
 603         spin_unlock_irqrestore(&card->lock, flags);
 604         atomic_set(&card->write.irq_pending, 0);
 605 }
 606 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 607
 608 static int qeth_check_idx_response(struct qeth_card *card,
 609         unsigned char *buffer)
 610 {
 611         if (!buffer)
 612                 return 0;
 613
 614         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 615         if ((buffer[2] & 0xc0) == 0xc0) {
 616                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 617                            "with cause code 0x%02x%s\n",
 618                            buffer[4],
 619                            ((buffer[4] == 0x22) ?
 620                             " -- try another portname" : ""));
 621                 QETH_CARD_TEXT(card, 2, "ckidxres");
 622                 QETH_CARD_TEXT(card, 2, " idxterm");
 623                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 624                 if (buffer[4] == 0xf6) {
 625                         dev_err(&card->gdev->dev,
 626                         "The qeth device is not configured "
 627                         "for the OSI layer required by z/VM\n");
 628                         return -EPERM;
 629                 }
 630                 return -EIO;
 631         }
 632         return 0;
 633 }
 634
 635 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 636                 __u32 len)
 637 {
 638         struct qeth_card *card;
 639
 640         card = CARD_FROM_CDEV(channel->ccwdev);
 641         QETH_CARD_TEXT(card, 4, "setupccw");
 642         if (channel == &card->read)
 643                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 644         else
 645                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 646         channel->ccw.count = len;
 647         channel->ccw.cda = (__u32) __pa(iob);
 648 }
 649
 650 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 651 {
 652         __u8 index;
 653
 654         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 655         index = channel->io_buf_no;
 656         do {
 657                 if (channel->iob[index].state == BUF_STATE_FREE) {
 658                         channel->iob[index].state = BUF_STATE_LOCKED;
 659                         channel->io_buf_no = (channel->io_buf_no + 1) %
 660                                 QETH_CMD_BUFFER_NO;
 661                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 662                         return channel->iob + index;
 663                 }
 664                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 665         } while (index != channel->io_buf_no);
 666
 667         return NULL;
 668 }
 669
 670 void qeth_release_buffer(struct qeth_channel *channel,
 671                 struct qeth_cmd_buffer *iob)
 672 {
 673         unsigned long flags;
 674
 675         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 676         spin_lock_irqsave(&channel->iob_lock, flags);
 677         memset(iob->data, 0, QETH_BUFSIZE);
 678         iob->state = BUF_STATE_FREE;
 679         iob->callback = qeth_send_control_data_cb;
 680         iob->rc = 0;
 681         spin_unlock_irqrestore(&channel->iob_lock, flags);
 682         wake_up(&channel->wait_q);
 683 }
 684 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 685
 686 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 687 {
 688         struct qeth_cmd_buffer *buffer = NULL;
 689         unsigned long flags;
 690
 691         spin_lock_irqsave(&channel->iob_lock, flags);
 692         buffer = __qeth_get_buffer(channel);
 693         spin_unlock_irqrestore(&channel->iob_lock, flags);
 694         return buffer;
 695 }
 696
 697 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 698 {
 699         struct qeth_cmd_buffer *buffer;
 700         wait_event(channel->wait_q,
 701                    ((buffer = qeth_get_buffer(channel)) != NULL));
 702         return buffer;
 703 }
 704 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 705
 706 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 707 {
 708         int cnt;
 709
 710         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 711                 qeth_release_buffer(channel, &channel->iob[cnt]);
 712         channel->buf_no = 0;
 713         channel->io_buf_no = 0;
 714 }
 715 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 716
 717 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 718                   struct qeth_cmd_buffer *iob)
 719 {
 720         struct qeth_card *card;
 721         struct qeth_reply *reply, *r;
 722         struct qeth_ipa_cmd *cmd;
 723         unsigned long flags;
 724         int keep_reply;
 725         int rc = 0;
 726
 727         card = CARD_FROM_CDEV(channel->ccwdev);
 728         QETH_CARD_TEXT(card, 4, "sndctlcb");
 729         rc = qeth_check_idx_response(card, iob->data);
 730         switch (rc) {
 731         case 0:
 732                 break;
 733         case -EIO:
 734                 qeth_clear_ipacmd_list(card);
 735                 qeth_schedule_recovery(card);
 736                 /* fall through */
 737         default:
 738                 goto out;
 739         }
 740
 741         cmd = qeth_check_ipa_data(card, iob);
 742         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 743                 goto out;
 744         /*in case of OSN : check if cmd is set */
 745         if (card->info.type == QETH_CARD_TYPE_OSN &&
 746             cmd &&
 747             cmd->hdr.command != IPA_CMD_STARTLAN &&
 748             card->osn_info.assist_cb != NULL) {
 749                 card->osn_info.assist_cb(card->dev, cmd);
 750                 goto out;
 751         }
 752
 753         spin_lock_irqsave(&card->lock, flags);
 754         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 755                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 756                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 757                         qeth_get_reply(reply);
 758                         list_del_init(&reply->list);
 759                         spin_unlock_irqrestore(&card->lock, flags);
 760                         keep_reply = 0;
 761                         if (reply->callback != NULL) {
 762                                 if (cmd) {
 763                                         reply->offset = (__u16)((char *)cmd -
 764                                                         (char *)iob->data);
 765                                         keep_reply = reply->callback(card,
 766                                                         reply,
 767                                                         (unsigned long)cmd);
 768                                 } else
 769                                         keep_reply = reply->callback(card,
 770                                                         reply,
 771                                                         (unsigned long)iob);
 772                         }
 773                         if (cmd)
 774                                 reply->rc = (u16) cmd->hdr.return_code;
 775                         else if (iob->rc)
 776                                 reply->rc = iob->rc;
 777                         if (keep_reply) {
 778                                 spin_lock_irqsave(&card->lock, flags);
 779                                 list_add_tail(&reply->list,
 780                                               &card->cmd_waiter_list);
 781                                 spin_unlock_irqrestore(&card->lock, flags);
 782                         } else {
 783                                 atomic_inc(&reply->received);
 784                                 wake_up(&reply->wait_q);
 785                         }
 786                         qeth_put_reply(reply);
 787                         goto out;
 788                 }
 789         }
 790         spin_unlock_irqrestore(&card->lock, flags);
 791 out:
 792         memcpy(&card->seqno.pdu_hdr_ack,
 793                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 794                 QETH_SEQ_NO_LENGTH);
 795         qeth_release_buffer(channel, iob);
 796 }
 797
 798 static int qeth_setup_channel(struct qeth_channel *channel)
 799 {
 800         int cnt;
 801
 802         QETH_DBF_TEXT(SETUP, 2, "setupch");
 803         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 804                 channel->iob[cnt].data =
 805                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 806                 if (channel->iob[cnt].data == NULL)
 807                         break;
 808                 channel->iob[cnt].state = BUF_STATE_FREE;
 809                 channel->iob[cnt].channel = channel;
 810                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 811                 channel->iob[cnt].rc = 0;
 812         }
 813         if (cnt < QETH_CMD_BUFFER_NO) {
 814                 while (cnt-- > 0)
 815                         kfree(channel->iob[cnt].data);
 816                 return -ENOMEM;
 817         }
 818         channel->buf_no = 0;
 819         channel->io_buf_no = 0;
 820         atomic_set(&channel->irq_pending, 0);
 821         spin_lock_init(&channel->iob_lock);
 822
 823         init_waitqueue_head(&channel->wait_q);
 824         return 0;
 825 }
 826
 827 static int qeth_set_thread_start_bit(struct qeth_card *card,
 828                 unsigned long thread)
 829 {
 830         unsigned long flags;
 831
 832         spin_lock_irqsave(&card->thread_mask_lock, flags);
 833         if (!(card->thread_allowed_mask & thread) ||
 834               (card->thread_start_mask & thread)) {
 835                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 836                 return -EPERM;
 837         }
 838         card->thread_start_mask |= thread;
 839         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 840         return 0;
 841 }
 842
 843 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 844 {
 845         unsigned long flags;
 846
 847         spin_lock_irqsave(&card->thread_mask_lock, flags);
 848         card->thread_start_mask &= ~thread;
 849         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 850         wake_up(&card->wait_q);
 851 }
 852 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 853
 854 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 855 {
 856         unsigned long flags;
 857
 858         spin_lock_irqsave(&card->thread_mask_lock, flags);
 859         card->thread_running_mask &= ~thread;
 860         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 861         wake_up(&card->wait_q);
 862 }
 863 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 864
 865 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 866 {
 867         unsigned long flags;
 868         int rc = 0;
 869
 870         spin_lock_irqsave(&card->thread_mask_lock, flags);
 871         if (card->thread_start_mask & thread) {
 872                 if ((card->thread_allowed_mask & thread) &&
 873                     !(card->thread_running_mask & thread)) {
 874                         rc = 1;
 875                         card->thread_start_mask &= ~thread;
 876                         card->thread_running_mask |= thread;
 877                 } else
 878                         rc = -EPERM;
 879         }
 880         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 881         return rc;
 882 }
 883
 884 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 885 {
 886         int rc = 0;
 887
 888         wait_event(card->wait_q,
 889                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 890         return rc;
 891 }
 892 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 893
 894 void qeth_schedule_recovery(struct qeth_card *card)
 895 {
 896         QETH_CARD_TEXT(card, 2, "startrec");
 897         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 898                 schedule_work(&card->kernel_thread_starter);
 899 }
 900 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 901
 902 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 903 {
 904         int dstat, cstat;
 905         char *sense;
 906         struct qeth_card *card;
 907
 908         sense = (char *) irb->ecw;
 909         cstat = irb->scsw.cmd.cstat;
 910         dstat = irb->scsw.cmd.dstat;
 911         card = CARD_FROM_CDEV(cdev);
 912
 913         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 914                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 915                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 916                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 917                 dev_warn(&cdev->dev, "The qeth device driver "
 918                         "failed to recover an error on the device\n");
 919                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 920                         dev_name(&cdev->dev), dstat, cstat);
 921                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 922                                 16, 1, irb, 64, 1);
 923                 return 1;
 924         }
 925
 926         if (dstat & DEV_STAT_UNIT_CHECK) {
 927                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 928                     SENSE_RESETTING_EVENT_FLAG) {
 929                         QETH_CARD_TEXT(card, 2, "REVIND");
 930                         return 1;
 931                 }
 932                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 933                     SENSE_COMMAND_REJECT_FLAG) {
 934                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 935                         return 1;
 936                 }
 937                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 938                         QETH_CARD_TEXT(card, 2, "AFFE");
 939                         return 1;
 940                 }
 941                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 942                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 943                         return 0;
 944                 }
 945                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 946                         return 1;
 947         }
 948         return 0;
 949 }
 950
 951 static long __qeth_check_irb_error(struct ccw_device *cdev,
 952                 unsigned long intparm, struct irb *irb)
 953 {
 954         struct qeth_card *card;
 955
 956         card = CARD_FROM_CDEV(cdev);
 957
 958         if (!IS_ERR(irb))
 959                 return 0;
 960
 961         switch (PTR_ERR(irb)) {
 962         case -EIO:
 963                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 964                         dev_name(&cdev->dev));
 965                 QETH_CARD_TEXT(card, 2, "ckirberr");
 966                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 967                 break;
 968         case -ETIMEDOUT:
 969                 dev_warn(&cdev->dev, "A hardware operation timed out"
 970                         " on the device\n");
 971                 QETH_CARD_TEXT(card, 2, "ckirberr");
 972                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 973                 if (intparm == QETH_RCD_PARM) {
 974                         if (card && (card->data.ccwdev == cdev)) {
 975                                 card->data.state = CH_STATE_DOWN;
 976                                 wake_up(&card->wait_q);
 977                         }
 978                 }
 979                 break;
 980         default:
 981                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 982                         dev_name(&cdev->dev), PTR_ERR(irb));
 983                 QETH_CARD_TEXT(card, 2, "ckirberr");
 984                 QETH_CARD_TEXT(card, 2, "  rc???");
 985         }
 986         return PTR_ERR(irb);
 987 }
 988
 989 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 990                 struct irb *irb)
 991 {
 992         int rc;
 993         int cstat, dstat;
 994         struct qeth_cmd_buffer *buffer;
 995         struct qeth_channel *channel;
 996         struct qeth_card *card;
 997         struct qeth_cmd_buffer *iob;
 998         __u8 index;
 999
1000         if (__qeth_check_irb_error(cdev, intparm, irb))
1001                 return;
1002         cstat = irb->scsw.cmd.cstat;
1003         dstat = irb->scsw.cmd.dstat;
1004
1005         card = CARD_FROM_CDEV(cdev);
1006         if (!card)
1007                 return;
1008
1009         QETH_CARD_TEXT(card, 5, "irq");
1010
1011         if (card->read.ccwdev == cdev) {
1012                 channel = &card->read;
1013                 QETH_CARD_TEXT(card, 5, "read");
1014         } else if (card->write.ccwdev == cdev) {
1015                 channel = &card->write;
1016                 QETH_CARD_TEXT(card, 5, "write");
1017         } else {
1018                 channel = &card->data;
1019                 QETH_CARD_TEXT(card, 5, "data");
1020         }
1021         atomic_set(&channel->irq_pending, 0);
1022
1023         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1024                 channel->state = CH_STATE_STOPPED;
1025
1026         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1027                 channel->state = CH_STATE_HALTED;
1028
1029         /*let's wake up immediately on data channel*/
1030         if ((channel == &card->data) && (intparm != 0) &&
1031             (intparm != QETH_RCD_PARM))
1032                 goto out;
1033
1034         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1035                 QETH_CARD_TEXT(card, 6, "clrchpar");
1036                 /* we don't have to handle this further */
1037                 intparm = 0;
1038         }
1039         if (intparm == QETH_HALT_CHANNEL_PARM) {
1040                 QETH_CARD_TEXT(card, 6, "hltchpar");
1041                 /* we don't have to handle this further */
1042                 intparm = 0;
1043         }
1044         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1045             (dstat & DEV_STAT_UNIT_CHECK) ||
1046             (cstat)) {
1047                 if (irb->esw.esw0.erw.cons) {
1048                         dev_warn(&channel->ccwdev->dev,
1049                                 "The qeth device driver failed to recover "
1050                                 "an error on the device\n");
1051                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1052                                 "0x%X dstat 0x%X\n",
1053                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1054                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1055                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1056                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1057                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1058                 }
1059                 if (intparm == QETH_RCD_PARM) {
1060                         channel->state = CH_STATE_DOWN;
1061                         goto out;
1062                 }
1063                 rc = qeth_get_problem(cdev, irb);
1064                 if (rc) {
1065                         qeth_clear_ipacmd_list(card);
1066                         qeth_schedule_recovery(card);
1067                         goto out;
1068                 }
1069         }
1070
1071         if (intparm == QETH_RCD_PARM) {
1072                 channel->state = CH_STATE_RCD_DONE;
1073                 goto out;
1074         }
1075         if (intparm) {
1076                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1077                 buffer->state = BUF_STATE_PROCESSED;
1078         }
1079         if (channel == &card->data)
1080                 return;
1081         if (channel == &card->read &&
1082             channel->state == CH_STATE_UP)
1083                 qeth_issue_next_read(card);
1084
1085         iob = channel->iob;
1086         index = channel->buf_no;
1087         while (iob[index].state == BUF_STATE_PROCESSED) {
1088                 if (iob[index].callback != NULL)
1089                         iob[index].callback(channel, iob + index);
1090
1091                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1092         }
1093         channel->buf_no = index;
1094 out:
1095         wake_up(&card->wait_q);
1096         return;
1097 }
1098
1099 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1100                 struct qeth_qdio_out_buffer *buf,
1101                 enum iucv_tx_notify notification)
1102 {
1103         struct sk_buff *skb;
1104
1105         if (skb_queue_empty(&buf->skb_list))
1106                 goto out;
1107         skb = skb_peek(&buf->skb_list);
1108         while (skb) {
1109                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1110                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1111                 if (skb->protocol == ETH_P_AF_IUCV) {
1112                         if (skb->sk) {
1113                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1114                                 iucv->sk_txnotify(skb, notification);
1115                         }
1116                 }
1117                 if (skb_queue_is_last(&buf->skb_list, skb))
1118                         skb = NULL;
1119                 else
1120                         skb = skb_queue_next(&buf->skb_list, skb);
1121         }
1122 out:
1123         return;
1124 }
1125
1126 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1127 {
1128         struct sk_buff *skb;
1129         struct iucv_sock *iucv;
1130         int notify_general_error = 0;
1131
1132         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1133                 notify_general_error = 1;
1134
1135         /* release may never happen from within CQ tasklet scope */
1136         BUG_ON(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1137
1138         skb = skb_dequeue(&buf->skb_list);
1139         while (skb) {
1140                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1141                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1142                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1143                         if (skb->sk) {
1144                                 iucv = iucv_sk(skb->sk);
1145                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1146                         }
1147                 }
1148                 atomic_dec(&skb->users);
1149                 dev_kfree_skb_any(skb);
1150                 skb = skb_dequeue(&buf->skb_list);
1151         }
1152 }
1153
1154 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1155                 struct qeth_qdio_out_buffer *buf,
1156                 enum qeth_qdio_buffer_states newbufstate)
1157 {
1158         int i;
1159
1160         /* is PCI flag set on buffer? */
1161         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1162                 atomic_dec(&queue->set_pci_flags_count);
1163
1164         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1165                 qeth_release_skbs(buf);
1166         }
1167         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1168                 if (buf->buffer->element[i].addr && buf->is_header[i])
1169                         kmem_cache_free(qeth_core_header_cache,
1170                                 buf->buffer->element[i].addr);
1171                 buf->is_header[i] = 0;
1172                 buf->buffer->element[i].length = 0;
1173                 buf->buffer->element[i].addr = NULL;
1174                 buf->buffer->element[i].eflags = 0;
1175                 buf->buffer->element[i].sflags = 0;
1176         }
1177         buf->buffer->element[15].eflags = 0;
1178         buf->buffer->element[15].sflags = 0;
1179         buf->next_element_to_fill = 0;
1180         atomic_set(&buf->state, newbufstate);
1181 }
1182
1183 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1184 {
1185         int j;
1186
1187         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1188                 if (!q->bufs[j])
1189                         continue;
1190                 qeth_cleanup_handled_pending(q, j, 1);
1191                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1192                 if (free) {
1193                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1194                         q->bufs[j] = NULL;
1195                 }
1196         }
1197 }
1198
1199 void qeth_clear_qdio_buffers(struct qeth_card *card)
1200 {
1201         int i;
1202
1203         QETH_CARD_TEXT(card, 2, "clearqdbf");
1204         /* clear outbound buffers to free skbs */
1205         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1206                 if (card->qdio.out_qs[i]) {
1207                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1208                 }
1209         }
1210 }
1211 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1212
1213 static void qeth_free_buffer_pool(struct qeth_card *card)
1214 {
1215         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1216         int i = 0;
1217         list_for_each_entry_safe(pool_entry, tmp,
1218                                  &card->qdio.init_pool.entry_list, init_list){
1219                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1220                         free_page((unsigned long)pool_entry->elements[i]);
1221                 list_del(&pool_entry->init_list);
1222                 kfree(pool_entry);
1223         }
1224 }
1225
1226 static void qeth_free_qdio_buffers(struct qeth_card *card)
1227 {
1228         int i, j;
1229
1230         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1231                 QETH_QDIO_UNINITIALIZED)
1232                 return;
1233
1234         qeth_free_cq(card);
1235         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1236         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1237                 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1238         kfree(card->qdio.in_q);
1239         card->qdio.in_q = NULL;
1240         /* inbound buffer pool */
1241         qeth_free_buffer_pool(card);
1242         /* free outbound qdio_qs */
1243         if (card->qdio.out_qs) {
1244                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1245                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1246                         kfree(card->qdio.out_qs[i]);
1247                 }
1248                 kfree(card->qdio.out_qs);
1249                 card->qdio.out_qs = NULL;
1250         }
1251 }
1252
1253 static void qeth_clean_channel(struct qeth_channel *channel)
1254 {
1255         int cnt;
1256
1257         QETH_DBF_TEXT(SETUP, 2, "freech");
1258         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1259                 kfree(channel->iob[cnt].data);
1260 }
1261
1262 static void qeth_get_channel_path_desc(struct qeth_card *card)
1263 {
1264         struct ccw_device *ccwdev;
1265         struct channelPath_dsc {
1266                 u8 flags;
1267                 u8 lsn;
1268                 u8 desc;
1269                 u8 chpid;
1270                 u8 swla;
1271                 u8 zeroes;
1272                 u8 chla;
1273                 u8 chpp;
1274         } *chp_dsc;
1275
1276         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1277
1278         ccwdev = card->data.ccwdev;
1279         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1280         if (chp_dsc != NULL) {
1281                 if (card->info.type != QETH_CARD_TYPE_IQD) {
1282                         /* CHPP field bit 6 == 1 -> single queue */
1283                         if ((chp_dsc->chpp & 0x02) == 0x02) {
1284                                 if ((atomic_read(&card->qdio.state) !=
1285                                         QETH_QDIO_UNINITIALIZED) &&
1286                                     (card->qdio.no_out_queues == 4))
1287                                         /* change from 4 to 1 outbound queues */
1288                                         qeth_free_qdio_buffers(card);
1289                                 card->qdio.no_out_queues = 1;
1290                                 if (card->qdio.default_out_queue != 0)
1291                                         dev_info(&card->gdev->dev,
1292                                         "Priority Queueing not supported\n");
1293                                 card->qdio.default_out_queue = 0;
1294                         } else {
1295                                 if ((atomic_read(&card->qdio.state) !=
1296                                         QETH_QDIO_UNINITIALIZED) &&
1297                                     (card->qdio.no_out_queues == 1)) {
1298                                         /* change from 1 to 4 outbound queues */
1299                                         qeth_free_qdio_buffers(card);
1300                                         card->qdio.default_out_queue = 2;
1301                                 }
1302                                 card->qdio.no_out_queues = 4;
1303                         }
1304                 }
1305                 card->info.func_level = 0x4100 + chp_dsc->desc;
1306                 kfree(chp_dsc);
1307         }
1308         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1309         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1310         return;
1311 }
1312
1313 static void qeth_init_qdio_info(struct qeth_card *card)
1314 {
1315         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1316         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1317         /* inbound */
1318         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1319         if (card->info.type == QETH_CARD_TYPE_IQD)
1320                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1321         else
1322                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1323         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1324         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1325         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1326 }
1327
1328 static void qeth_set_intial_options(struct qeth_card *card)
1329 {
1330         card->options.route4.type = NO_ROUTER;
1331         card->options.route6.type = NO_ROUTER;
1332         card->options.fake_broadcast = 0;
1333         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1334         card->options.performance_stats = 0;
1335         card->options.rx_sg_cb = QETH_RX_SG_CB;
1336         card->options.isolation = ISOLATION_MODE_NONE;
1337         card->options.cq = QETH_CQ_DISABLED;
1338 }
1339
1340 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1341 {
1342         unsigned long flags;
1343         int rc = 0;
1344
1345         spin_lock_irqsave(&card->thread_mask_lock, flags);
1346         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1347                         (u8) card->thread_start_mask,
1348                         (u8) card->thread_allowed_mask,
1349                         (u8) card->thread_running_mask);
1350         rc = (card->thread_start_mask & thread);
1351         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1352         return rc;
1353 }
1354
1355 static void qeth_start_kernel_thread(struct work_struct *work)
1356 {
1357         struct task_struct *ts;
1358         struct qeth_card *card = container_of(work, struct qeth_card,
1359                                         kernel_thread_starter);
1360         QETH_CARD_TEXT(card , 2, "strthrd");
1361
1362         if (card->read.state != CH_STATE_UP &&
1363             card->write.state != CH_STATE_UP)
1364                 return;
1365         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1366                 ts = kthread_run(card->discipline->recover, (void *)card,
1367                                 "qeth_recover");
1368                 if (IS_ERR(ts)) {
1369                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1370                         qeth_clear_thread_running_bit(card,
1371                                 QETH_RECOVER_THREAD);
1372                 }
1373         }
1374 }
1375
1376 static int qeth_setup_card(struct qeth_card *card)
1377 {
1378
1379         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1380         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1381
1382         card->read.state  = CH_STATE_DOWN;
1383         card->write.state = CH_STATE_DOWN;
1384         card->data.state  = CH_STATE_DOWN;
1385         card->state = CARD_STATE_DOWN;
1386         card->lan_online = 0;
1387         card->read_or_write_problem = 0;
1388         card->dev = NULL;
1389         spin_lock_init(&card->vlanlock);
1390         spin_lock_init(&card->mclock);
1391         spin_lock_init(&card->lock);
1392         spin_lock_init(&card->ip_lock);
1393         spin_lock_init(&card->thread_mask_lock);
1394         mutex_init(&card->conf_mutex);
1395         mutex_init(&card->discipline_mutex);
1396         card->thread_start_mask = 0;
1397         card->thread_allowed_mask = 0;
1398         card->thread_running_mask = 0;
1399         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1400         INIT_LIST_HEAD(&card->ip_list);
1401         INIT_LIST_HEAD(card->ip_tbd_list);
1402         INIT_LIST_HEAD(&card->cmd_waiter_list);
1403         init_waitqueue_head(&card->wait_q);
1404         /* initial options */
1405         qeth_set_intial_options(card);
1406         /* IP address takeover */
1407         INIT_LIST_HEAD(&card->ipato.entries);
1408         card->ipato.enabled = 0;
1409         card->ipato.invert4 = 0;
1410         card->ipato.invert6 = 0;
1411         /* init QDIO stuff */
1412         qeth_init_qdio_info(card);
1413         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1414         return 0;
1415 }
1416
1417 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1418 {
1419         struct qeth_card *card = container_of(slr, struct qeth_card,
1420                                         qeth_service_level);
1421         if (card->info.mcl_level[0])
1422                 seq_printf(m, "qeth: %s firmware level %s\n",
1423                         CARD_BUS_ID(card), card->info.mcl_level);
1424 }
1425
1426 static struct qeth_card *qeth_alloc_card(void)
1427 {
1428         struct qeth_card *card;
1429
1430         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1431         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1432         if (!card)
1433                 goto out;
1434         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1435         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1436         if (!card->ip_tbd_list) {
1437                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1438                 goto out_card;
1439         }
1440         if (qeth_setup_channel(&card->read))
1441                 goto out_ip;
1442         if (qeth_setup_channel(&card->write))
1443                 goto out_channel;
1444         card->options.layer2 = -1;
1445         card->qeth_service_level.seq_print = qeth_core_sl_print;
1446         register_service_level(&card->qeth_service_level);
1447         return card;
1448
1449 out_channel:
1450         qeth_clean_channel(&card->read);
1451 out_ip:
1452         kfree(card->ip_tbd_list);
1453 out_card:
1454         kfree(card);
1455 out:
1456         return NULL;
1457 }
1458
1459 static int qeth_determine_card_type(struct qeth_card *card)
1460 {
1461         int i = 0;
1462
1463         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1464
1465         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1466         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1467         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1468                 if ((CARD_RDEV(card)->id.dev_type ==
1469                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1470                     (CARD_RDEV(card)->id.dev_model ==
1471                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1472                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1473                         card->qdio.no_out_queues =
1474                                 known_devices[i][QETH_QUEUE_NO_IND];
1475                         card->qdio.no_in_queues = 1;
1476                         card->info.is_multicast_different =
1477                                 known_devices[i][QETH_MULTICAST_IND];
1478                         qeth_get_channel_path_desc(card);
1479                         return 0;
1480                 }
1481                 i++;
1482         }
1483         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1484         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1485                 "unknown type\n");
1486         return -ENOENT;
1487 }
1488
1489 static int qeth_clear_channel(struct qeth_channel *channel)
1490 {
1491         unsigned long flags;
1492         struct qeth_card *card;
1493         int rc;
1494
1495         card = CARD_FROM_CDEV(channel->ccwdev);
1496         QETH_CARD_TEXT(card, 3, "clearch");
1497         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1498         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1499         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1500
1501         if (rc)
1502                 return rc;
1503         rc = wait_event_interruptible_timeout(card->wait_q,
1504                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1505         if (rc == -ERESTARTSYS)
1506                 return rc;
1507         if (channel->state != CH_STATE_STOPPED)
1508                 return -ETIME;
1509         channel->state = CH_STATE_DOWN;
1510         return 0;
1511 }
1512
1513 static int qeth_halt_channel(struct qeth_channel *channel)
1514 {
1515         unsigned long flags;
1516         struct qeth_card *card;
1517         int rc;
1518
1519         card = CARD_FROM_CDEV(channel->ccwdev);
1520         QETH_CARD_TEXT(card, 3, "haltch");
1521         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1522         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1523         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1524
1525         if (rc)
1526                 return rc;
1527         rc = wait_event_interruptible_timeout(card->wait_q,
1528                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1529         if (rc == -ERESTARTSYS)
1530                 return rc;
1531         if (channel->state != CH_STATE_HALTED)
1532                 return -ETIME;
1533         return 0;
1534 }
1535
1536 static int qeth_halt_channels(struct qeth_card *card)
1537 {
1538         int rc1 = 0, rc2 = 0, rc3 = 0;
1539
1540         QETH_CARD_TEXT(card, 3, "haltchs");
1541         rc1 = qeth_halt_channel(&card->read);
1542         rc2 = qeth_halt_channel(&card->write);
1543         rc3 = qeth_halt_channel(&card->data);
1544         if (rc1)
1545                 return rc1;
1546         if (rc2)
1547                 return rc2;
1548         return rc3;
1549 }
1550
1551 static int qeth_clear_channels(struct qeth_card *card)
1552 {
1553         int rc1 = 0, rc2 = 0, rc3 = 0;
1554
1555         QETH_CARD_TEXT(card, 3, "clearchs");
1556         rc1 = qeth_clear_channel(&card->read);
1557         rc2 = qeth_clear_channel(&card->write);
1558         rc3 = qeth_clear_channel(&card->data);
1559         if (rc1)
1560                 return rc1;
1561         if (rc2)
1562                 return rc2;
1563         return rc3;
1564 }
1565
1566 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1567 {
1568         int rc = 0;
1569
1570         QETH_CARD_TEXT(card, 3, "clhacrd");
1571
1572         if (halt)
1573                 rc = qeth_halt_channels(card);
1574         if (rc)
1575                 return rc;
1576         return qeth_clear_channels(card);
1577 }
1578
1579 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1580 {
1581         int rc = 0;
1582
1583         QETH_CARD_TEXT(card, 3, "qdioclr");
1584         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1585                 QETH_QDIO_CLEANING)) {
1586         case QETH_QDIO_ESTABLISHED:
1587                 if (card->info.type == QETH_CARD_TYPE_IQD)
1588                         rc = qdio_shutdown(CARD_DDEV(card),
1589                                 QDIO_FLAG_CLEANUP_USING_HALT);
1590                 else
1591                         rc = qdio_shutdown(CARD_DDEV(card),
1592                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1593                 if (rc)
1594                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1595                 qdio_free(CARD_DDEV(card));
1596                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1597                 break;
1598         case QETH_QDIO_CLEANING:
1599                 return rc;
1600         default:
1601                 break;
1602         }
1603         rc = qeth_clear_halt_card(card, use_halt);
1604         if (rc)
1605                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1606         card->state = CARD_STATE_DOWN;
1607         return rc;
1608 }
1609 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1610
1611 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1612                                int *length)
1613 {
1614         struct ciw *ciw;
1615         char *rcd_buf;
1616         int ret;
1617         struct qeth_channel *channel = &card->data;
1618         unsigned long flags;
1619
1620         /*
1621          * scan for RCD command in extended SenseID data
1622          */
1623         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1624         if (!ciw || ciw->cmd == 0)
1625                 return -EOPNOTSUPP;
1626         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1627         if (!rcd_buf)
1628                 return -ENOMEM;
1629
1630         channel->ccw.cmd_code = ciw->cmd;
1631         channel->ccw.cda = (__u32) __pa(rcd_buf);
1632         channel->ccw.count = ciw->count;
1633         channel->ccw.flags = CCW_FLAG_SLI;
1634         channel->state = CH_STATE_RCD;
1635         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1636         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1637                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1638                                        QETH_RCD_TIMEOUT);
1639         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1640         if (!ret)
1641                 wait_event(card->wait_q,
1642                            (channel->state == CH_STATE_RCD_DONE ||
1643                             channel->state == CH_STATE_DOWN));
1644         if (channel->state == CH_STATE_DOWN)
1645                 ret = -EIO;
1646         else
1647                 channel->state = CH_STATE_DOWN;
1648         if (ret) {
1649                 kfree(rcd_buf);
1650                 *buffer = NULL;
1651                 *length = 0;
1652         } else {
1653                 *length = ciw->count;
1654                 *buffer = rcd_buf;
1655         }
1656         return ret;
1657 }
1658
1659 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1660 {
1661         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1662         card->info.chpid = prcd[30];
1663         card->info.unit_addr2 = prcd[31];
1664         card->info.cula = prcd[63];
1665         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1666                                (prcd[0x11] == _ascebc['M']));
1667 }
1668
1669 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1670 {
1671         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1672
1673         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1674             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1675                 card->info.blkt.time_total = 250;
1676                 card->info.blkt.inter_packet = 5;
1677                 card->info.blkt.inter_packet_jumbo = 15;
1678         } else {
1679                 card->info.blkt.time_total = 0;
1680                 card->info.blkt.inter_packet = 0;
1681                 card->info.blkt.inter_packet_jumbo = 0;
1682         }
1683 }
1684
1685 static void qeth_init_tokens(struct qeth_card *card)
1686 {
1687         card->token.issuer_rm_w = 0x00010103UL;
1688         card->token.cm_filter_w = 0x00010108UL;
1689         card->token.cm_connection_w = 0x0001010aUL;
1690         card->token.ulp_filter_w = 0x0001010bUL;
1691         card->token.ulp_connection_w = 0x0001010dUL;
1692 }
1693
1694 static void qeth_init_func_level(struct qeth_card *card)
1695 {
1696         switch (card->info.type) {
1697         case QETH_CARD_TYPE_IQD:
1698                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1699                 break;
1700         case QETH_CARD_TYPE_OSD:
1701         case QETH_CARD_TYPE_OSN:
1702                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1703                 break;
1704         default:
1705                 break;
1706         }
1707 }
1708
1709 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1710                 void (*idx_reply_cb)(struct qeth_channel *,
1711                         struct qeth_cmd_buffer *))
1712 {
1713         struct qeth_cmd_buffer *iob;
1714         unsigned long flags;
1715         int rc;
1716         struct qeth_card *card;
1717
1718         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1719         card = CARD_FROM_CDEV(channel->ccwdev);
1720         iob = qeth_get_buffer(channel);
1721         iob->callback = idx_reply_cb;
1722         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1723         channel->ccw.count = QETH_BUFSIZE;
1724         channel->ccw.cda = (__u32) __pa(iob->data);
1725
1726         wait_event(card->wait_q,
1727                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1728         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1729         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1730         rc = ccw_device_start(channel->ccwdev,
1731                               &channel->ccw, (addr_t) iob, 0, 0);
1732         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1733
1734         if (rc) {
1735                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1736                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1737                 atomic_set(&channel->irq_pending, 0);
1738                 wake_up(&card->wait_q);
1739                 return rc;
1740         }
1741         rc = wait_event_interruptible_timeout(card->wait_q,
1742                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1743         if (rc == -ERESTARTSYS)
1744                 return rc;
1745         if (channel->state != CH_STATE_UP) {
1746                 rc = -ETIME;
1747                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1748                 qeth_clear_cmd_buffers(channel);
1749         } else
1750                 rc = 0;
1751         return rc;
1752 }
1753
1754 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1755                 void (*idx_reply_cb)(struct qeth_channel *,
1756                         struct qeth_cmd_buffer *))
1757 {
1758         struct qeth_card *card;
1759         struct qeth_cmd_buffer *iob;
1760         unsigned long flags;
1761         __u16 temp;
1762         __u8 tmp;
1763         int rc;
1764         struct ccw_dev_id temp_devid;
1765
1766         card = CARD_FROM_CDEV(channel->ccwdev);
1767
1768         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1769
1770         iob = qeth_get_buffer(channel);
1771         iob->callback = idx_reply_cb;
1772         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1773         channel->ccw.count = IDX_ACTIVATE_SIZE;
1774         channel->ccw.cda = (__u32) __pa(iob->data);
1775         if (channel == &card->write) {
1776                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1777                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1778                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1779                 card->seqno.trans_hdr++;
1780         } else {
1781                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1782                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1783                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1784         }
1785         tmp = ((__u8)card->info.portno) | 0x80;
1786         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1787         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1788                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1789         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1790                &card->info.func_level, sizeof(__u16));
1791         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1792         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1793         temp = (card->info.cula << 8) + card->info.unit_addr2;
1794         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1795
1796         wait_event(card->wait_q,
1797                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1798         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1799         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1800         rc = ccw_device_start(channel->ccwdev,
1801                               &channel->ccw, (addr_t) iob, 0, 0);
1802         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1803
1804         if (rc) {
1805                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1806                         rc);
1807                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1808                 atomic_set(&channel->irq_pending, 0);
1809                 wake_up(&card->wait_q);
1810                 return rc;
1811         }
1812         rc = wait_event_interruptible_timeout(card->wait_q,
1813                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1814         if (rc == -ERESTARTSYS)
1815                 return rc;
1816         if (channel->state != CH_STATE_ACTIVATING) {
1817                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1818                         " failed to recover an error on the device\n");
1819                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1820                         dev_name(&channel->ccwdev->dev));
1821                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1822                 qeth_clear_cmd_buffers(channel);
1823                 return -ETIME;
1824         }
1825         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1826 }
1827
1828 static int qeth_peer_func_level(int level)
1829 {
1830         if ((level & 0xff) == 8)
1831                 return (level & 0xff) + 0x400;
1832         if (((level >> 8) & 3) == 1)
1833                 return (level & 0xff) + 0x200;
1834         return level;
1835 }
1836
1837 static void qeth_idx_write_cb(struct qeth_channel *channel,
1838                 struct qeth_cmd_buffer *iob)
1839 {
1840         struct qeth_card *card;
1841         __u16 temp;
1842
1843         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1844
1845         if (channel->state == CH_STATE_DOWN) {
1846                 channel->state = CH_STATE_ACTIVATING;
1847                 goto out;
1848         }
1849         card = CARD_FROM_CDEV(channel->ccwdev);
1850
1851         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1852                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1853                         dev_err(&card->write.ccwdev->dev,
1854                                 "The adapter is used exclusively by another "
1855                                 "host\n");
1856                 else
1857                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1858                                 " negative reply\n",
1859                                 dev_name(&card->write.ccwdev->dev));
1860                 goto out;
1861         }
1862         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1863         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1864                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1865                         "function level mismatch (sent: 0x%x, received: "
1866                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1867                         card->info.func_level, temp);
1868                 goto out;
1869         }
1870         channel->state = CH_STATE_UP;
1871 out:
1872         qeth_release_buffer(channel, iob);
1873 }
1874
1875 static void qeth_idx_read_cb(struct qeth_channel *channel,
1876                 struct qeth_cmd_buffer *iob)
1877 {
1878         struct qeth_card *card;
1879         __u16 temp;
1880
1881         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1882         if (channel->state == CH_STATE_DOWN) {
1883                 channel->state = CH_STATE_ACTIVATING;
1884                 goto out;
1885         }
1886
1887         card = CARD_FROM_CDEV(channel->ccwdev);
1888         if (qeth_check_idx_response(card, iob->data))
1889                         goto out;
1890
1891         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1892                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1893                 case QETH_IDX_ACT_ERR_EXCL:
1894                         dev_err(&card->write.ccwdev->dev,
1895                                 "The adapter is used exclusively by another "
1896                                 "host\n");
1897                         break;
1898                 case QETH_IDX_ACT_ERR_AUTH:
1899                 case QETH_IDX_ACT_ERR_AUTH_USER:
1900                         dev_err(&card->read.ccwdev->dev,
1901                                 "Setting the device online failed because of "
1902                                 "insufficient authorization\n");
1903                         break;
1904                 default:
1905                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1906                                 " negative reply\n",
1907                                 dev_name(&card->read.ccwdev->dev));
1908                 }
1909                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1910                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1911                 goto out;
1912         }
1913
1914 /**
1915  *  * temporary fix for microcode bug
1916  *   * to revert it,replace OR by AND
1917  *    */
1918         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1919              (card->info.type == QETH_CARD_TYPE_OSD))
1920                 card->info.portname_required = 1;
1921
1922         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1923         if (temp != qeth_peer_func_level(card->info.func_level)) {
1924                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1925                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1926                         dev_name(&card->read.ccwdev->dev),
1927                         card->info.func_level, temp);
1928                 goto out;
1929         }
1930         memcpy(&card->token.issuer_rm_r,
1931                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1932                QETH_MPC_TOKEN_LENGTH);
1933         memcpy(&card->info.mcl_level[0],
1934                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1935         channel->state = CH_STATE_UP;
1936 out:
1937         qeth_release_buffer(channel, iob);
1938 }
1939
1940 void qeth_prepare_control_data(struct qeth_card *card, int len,
1941                 struct qeth_cmd_buffer *iob)
1942 {
1943         qeth_setup_ccw(&card->write, iob->data, len);
1944         iob->callback = qeth_release_buffer;
1945
1946         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1947                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1948         card->seqno.trans_hdr++;
1949         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1950                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1951         card->seqno.pdu_hdr++;
1952         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1953                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1954         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1955 }
1956 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1957
1958 int qeth_send_control_data(struct qeth_card *card, int len,
1959                 struct qeth_cmd_buffer *iob,
1960                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1961                         unsigned long),
1962                 void *reply_param)
1963 {
1964         int rc;
1965         unsigned long flags;
1966         struct qeth_reply *reply = NULL;
1967         unsigned long timeout, event_timeout;
1968         struct qeth_ipa_cmd *cmd;
1969
1970         QETH_CARD_TEXT(card, 2, "sendctl");
1971
1972         if (card->read_or_write_problem) {
1973                 qeth_release_buffer(iob->channel, iob);
1974                 return -EIO;
1975         }
1976         reply = qeth_alloc_reply(card);
1977         if (!reply) {
1978                 return -ENOMEM;
1979         }
1980         reply->callback = reply_cb;
1981         reply->param = reply_param;
1982         if (card->state == CARD_STATE_DOWN)
1983                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1984         else
1985                 reply->seqno = card->seqno.ipa++;
1986         init_waitqueue_head(&reply->wait_q);
1987         spin_lock_irqsave(&card->lock, flags);
1988         list_add_tail(&reply->list, &card->cmd_waiter_list);
1989         spin_unlock_irqrestore(&card->lock, flags);
1990         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1991
1992         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1993         qeth_prepare_control_data(card, len, iob);
1994
1995         if (IS_IPA(iob->data))
1996                 event_timeout = QETH_IPA_TIMEOUT;
1997         else
1998                 event_timeout = QETH_TIMEOUT;
1999         timeout = jiffies + event_timeout;
2000
2001         QETH_CARD_TEXT(card, 6, "noirqpnd");
2002         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2003         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2004                               (addr_t) iob, 0, 0);
2005         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2006         if (rc) {
2007                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2008                         "ccw_device_start rc = %i\n",
2009                         dev_name(&card->write.ccwdev->dev), rc);
2010                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2011                 spin_lock_irqsave(&card->lock, flags);
2012                 list_del_init(&reply->list);
2013                 qeth_put_reply(reply);
2014                 spin_unlock_irqrestore(&card->lock, flags);
2015                 qeth_release_buffer(iob->channel, iob);
2016                 atomic_set(&card->write.irq_pending, 0);
2017                 wake_up(&card->wait_q);
2018                 return rc;
2019         }
2020
2021         /* we have only one long running ipassist, since we can ensure
2022            process context of this command we can sleep */
2023         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2024         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2025             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2026                 if (!wait_event_timeout(reply->wait_q,
2027                     atomic_read(&reply->received), event_timeout))
2028                         goto time_err;
2029         } else {
2030                 while (!atomic_read(&reply->received)) {
2031                         if (time_after(jiffies, timeout))
2032                                 goto time_err;
2033                         cpu_relax();
2034                 };
2035         }
2036
2037         if (reply->rc == -EIO)
2038                 goto error;
2039         rc = reply->rc;
2040         qeth_put_reply(reply);
2041         return rc;
2042
2043 time_err:
2044         reply->rc = -ETIME;
2045         spin_lock_irqsave(&reply->card->lock, flags);
2046         list_del_init(&reply->list);
2047         spin_unlock_irqrestore(&reply->card->lock, flags);
2048         atomic_inc(&reply->received);
2049 error:
2050         atomic_set(&card->write.irq_pending, 0);
2051         qeth_release_buffer(iob->channel, iob);
2052         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2053         rc = reply->rc;
2054         qeth_put_reply(reply);
2055         return rc;
2056 }
2057 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2058
2059 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2060                 unsigned long data)
2061 {
2062         struct qeth_cmd_buffer *iob;
2063
2064         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2065
2066         iob = (struct qeth_cmd_buffer *) data;
2067         memcpy(&card->token.cm_filter_r,
2068                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2069                QETH_MPC_TOKEN_LENGTH);
2070         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2071         return 0;
2072 }
2073
2074 static int qeth_cm_enable(struct qeth_card *card)
2075 {
2076         int rc;
2077         struct qeth_cmd_buffer *iob;
2078
2079         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2080
2081         iob = qeth_wait_for_buffer(&card->write);
2082         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2083         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2084                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2085         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2086                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2087
2088         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2089                                     qeth_cm_enable_cb, NULL);
2090         return rc;
2091 }
2092
2093 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2094                 unsigned long data)
2095 {
2096
2097         struct qeth_cmd_buffer *iob;
2098
2099         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2100
2101         iob = (struct qeth_cmd_buffer *) data;
2102         memcpy(&card->token.cm_connection_r,
2103                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2104                QETH_MPC_TOKEN_LENGTH);
2105         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2106         return 0;
2107 }
2108
2109 static int qeth_cm_setup(struct qeth_card *card)
2110 {
2111         int rc;
2112         struct qeth_cmd_buffer *iob;
2113
2114         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2115
2116         iob = qeth_wait_for_buffer(&card->write);
2117         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2118         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2119                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2120         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2121                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2122         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2123                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2124         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2125                                     qeth_cm_setup_cb, NULL);
2126         return rc;
2127
2128 }
2129
2130 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2131 {
2132         switch (card->info.type) {
2133         case QETH_CARD_TYPE_UNKNOWN:
2134                 return 1500;
2135         case QETH_CARD_TYPE_IQD:
2136                 return card->info.max_mtu;
2137         case QETH_CARD_TYPE_OSD:
2138                 switch (card->info.link_type) {
2139                 case QETH_LINK_TYPE_HSTR:
2140                 case QETH_LINK_TYPE_LANE_TR:
2141                         return 2000;
2142                 default:
2143                         return 1492;
2144                 }
2145         case QETH_CARD_TYPE_OSM:
2146         case QETH_CARD_TYPE_OSX:
2147                 return 1492;
2148         default:
2149                 return 1500;
2150         }
2151 }
2152
2153 static inline int qeth_get_mtu_outof_framesize(int framesize)
2154 {
2155         switch (framesize) {
2156         case 0x4000:
2157                 return 8192;
2158         case 0x6000:
2159                 return 16384;
2160         case 0xa000:
2161                 return 32768;
2162         case 0xffff:
2163                 return 57344;
2164         default:
2165                 return 0;
2166         }
2167 }
2168
2169 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2170 {
2171         switch (card->info.type) {
2172         case QETH_CARD_TYPE_OSD:
2173         case QETH_CARD_TYPE_OSM:
2174         case QETH_CARD_TYPE_OSX:
2175         case QETH_CARD_TYPE_IQD:
2176                 return ((mtu >= 576) &&
2177                         (mtu <= card->info.max_mtu));
2178         case QETH_CARD_TYPE_OSN:
2179         case QETH_CARD_TYPE_UNKNOWN:
2180         default:
2181                 return 1;
2182         }
2183 }
2184
2185 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2186                 unsigned long data)
2187 {
2188
2189         __u16 mtu, framesize;
2190         __u16 len;
2191         __u8 link_type;
2192         struct qeth_cmd_buffer *iob;
2193
2194         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2195
2196         iob = (struct qeth_cmd_buffer *) data;
2197         memcpy(&card->token.ulp_filter_r,
2198                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2199                QETH_MPC_TOKEN_LENGTH);
2200         if (card->info.type == QETH_CARD_TYPE_IQD) {
2201                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2202                 mtu = qeth_get_mtu_outof_framesize(framesize);
2203                 if (!mtu) {
2204                         iob->rc = -EINVAL;
2205                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2206                         return 0;
2207                 }
2208                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2209                         /* frame size has changed */
2210                         if (card->dev &&
2211                             ((card->dev->mtu == card->info.initial_mtu) ||
2212                              (card->dev->mtu > mtu)))
2213                                 card->dev->mtu = mtu;
2214                         qeth_free_qdio_buffers(card);
2215                 }
2216                 card->info.initial_mtu = mtu;
2217                 card->info.max_mtu = mtu;
2218                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2219         } else {
2220                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2221                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2222                         iob->data);
2223                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2224         }
2225
2226         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2227         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2228                 memcpy(&link_type,
2229                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2230                 card->info.link_type = link_type;
2231         } else
2232                 card->info.link_type = 0;
2233         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2234         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2235         return 0;
2236 }
2237
2238 static int qeth_ulp_enable(struct qeth_card *card)
2239 {
2240         int rc;
2241         char prot_type;
2242         struct qeth_cmd_buffer *iob;
2243
2244         /*FIXME: trace view callbacks*/
2245         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2246
2247         iob = qeth_wait_for_buffer(&card->write);
2248         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2249
2250         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2251                 (__u8) card->info.portno;
2252         if (card->options.layer2)
2253                 if (card->info.type == QETH_CARD_TYPE_OSN)
2254                         prot_type = QETH_PROT_OSN2;
2255                 else
2256                         prot_type = QETH_PROT_LAYER2;
2257         else
2258                 prot_type = QETH_PROT_TCPIP;
2259
2260         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2261         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2262                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2263         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2264                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2265         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2266                card->info.portname, 9);
2267         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2268                                     qeth_ulp_enable_cb, NULL);
2269         return rc;
2270
2271 }
2272
2273 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2274                 unsigned long data)
2275 {
2276         struct qeth_cmd_buffer *iob;
2277         int rc = 0;
2278
2279         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2280
2281         iob = (struct qeth_cmd_buffer *) data;
2282         memcpy(&card->token.ulp_connection_r,
2283                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2284                QETH_MPC_TOKEN_LENGTH);
2285         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2286                      3)) {
2287                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2288                 dev_err(&card->gdev->dev, "A connection could not be "
2289                         "established because of an OLM limit\n");
2290                 iob->rc = -EMLINK;
2291         }
2292         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2293         return rc;
2294 }
2295
2296 static int qeth_ulp_setup(struct qeth_card *card)
2297 {
2298         int rc;
2299         __u16 temp;
2300         struct qeth_cmd_buffer *iob;
2301         struct ccw_dev_id dev_id;
2302
2303         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2304
2305         iob = qeth_wait_for_buffer(&card->write);
2306         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2307
2308         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2309                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2310         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2311                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2312         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2313                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2314
2315         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2316         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2317         temp = (card->info.cula << 8) + card->info.unit_addr2;
2318         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2319         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2320                                     qeth_ulp_setup_cb, NULL);
2321         return rc;
2322 }
2323
2324 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2325 {
2326         int rc;
2327         struct qeth_qdio_out_buffer *newbuf;
2328
2329         rc = 0;
2330         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2331         if (!newbuf) {
2332                 rc = -ENOMEM;
2333                 goto out;
2334         }
2335         newbuf->buffer = &q->qdio_bufs[bidx];
2336         skb_queue_head_init(&newbuf->skb_list);
2337         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2338         newbuf->q = q;
2339         newbuf->aob = NULL;
2340         newbuf->next_pending = q->bufs[bidx];
2341         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2342         q->bufs[bidx] = newbuf;
2343         if (q->bufstates) {
2344                 q->bufstates[bidx].user = newbuf;
2345                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2346                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2347                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2348                                 (long) newbuf->next_pending);
2349         }
2350 out:
2351         return rc;
2352 }
2353
2354
2355 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2356 {
2357         int i, j;
2358
2359         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2360
2361         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2362                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2363                 return 0;
2364
2365         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2366                                    GFP_KERNEL);
2367         if (!card->qdio.in_q)
2368                 goto out_nomem;
2369         QETH_DBF_TEXT(SETUP, 2, "inq");
2370         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2371         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2372         /* give inbound qeth_qdio_buffers their qdio_buffers */
2373         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2374                 card->qdio.in_q->bufs[i].buffer =
2375                         &card->qdio.in_q->qdio_bufs[i];
2376                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2377         }
2378         /* inbound buffer pool */
2379         if (qeth_alloc_buffer_pool(card))
2380                 goto out_freeinq;
2381
2382         /* outbound */
2383         card->qdio.out_qs =
2384                 kzalloc(card->qdio.no_out_queues *
2385                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2386         if (!card->qdio.out_qs)
2387                 goto out_freepool;
2388         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2389                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2390                                                GFP_KERNEL);
2391                 if (!card->qdio.out_qs[i])
2392                         goto out_freeoutq;
2393                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2394                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2395                 card->qdio.out_qs[i]->queue_no = i;
2396                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2397                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2398                         BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2399                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2400                                 goto out_freeoutqbufs;
2401                 }
2402         }
2403
2404         /* completion */
2405         if (qeth_alloc_cq(card))
2406                 goto out_freeoutq;
2407
2408         return 0;
2409
2410 out_freeoutqbufs:
2411         while (j > 0) {
2412                 --j;
2413                 kmem_cache_free(qeth_qdio_outbuf_cache,
2414                                 card->qdio.out_qs[i]->bufs[j]);
2415                 card->qdio.out_qs[i]->bufs[j] = NULL;
2416         }
2417 out_freeoutq:
2418         while (i > 0) {
2419                 kfree(card->qdio.out_qs[--i]);
2420                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2421         }
2422         kfree(card->qdio.out_qs);
2423         card->qdio.out_qs = NULL;
2424 out_freepool:
2425         qeth_free_buffer_pool(card);
2426 out_freeinq:
2427         kfree(card->qdio.in_q);
2428         card->qdio.in_q = NULL;
2429 out_nomem:
2430         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2431         return -ENOMEM;
2432 }
2433
2434 static void qeth_create_qib_param_field(struct qeth_card *card,
2435                 char *param_field)
2436 {
2437
2438         param_field[0] = _ascebc['P'];
2439         param_field[1] = _ascebc['C'];
2440         param_field[2] = _ascebc['I'];
2441         param_field[3] = _ascebc['T'];
2442         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2443         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2444         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2445 }
2446
2447 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2448                 char *param_field)
2449 {
2450         param_field[16] = _ascebc['B'];
2451         param_field[17] = _ascebc['L'];
2452         param_field[18] = _ascebc['K'];
2453         param_field[19] = _ascebc['T'];
2454         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2455         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2456         *((unsigned int *) (&param_field[28])) =
2457                 card->info.blkt.inter_packet_jumbo;
2458 }
2459
2460 static int qeth_qdio_activate(struct qeth_card *card)
2461 {
2462         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2463         return qdio_activate(CARD_DDEV(card));
2464 }
2465
2466 static int qeth_dm_act(struct qeth_card *card)
2467 {
2468         int rc;
2469         struct qeth_cmd_buffer *iob;
2470
2471         QETH_DBF_TEXT(SETUP, 2, "dmact");
2472
2473         iob = qeth_wait_for_buffer(&card->write);
2474         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2475
2476         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2477                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2478         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2479                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2480         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2481         return rc;
2482 }
2483
2484 static int qeth_mpc_initialize(struct qeth_card *card)
2485 {
2486         int rc;
2487
2488         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2489
2490         rc = qeth_issue_next_read(card);
2491         if (rc) {
2492                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2493                 return rc;
2494         }
2495         rc = qeth_cm_enable(card);
2496         if (rc) {
2497                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2498                 goto out_qdio;
2499         }
2500         rc = qeth_cm_setup(card);
2501         if (rc) {
2502                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2503                 goto out_qdio;
2504         }
2505         rc = qeth_ulp_enable(card);
2506         if (rc) {
2507                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2508                 goto out_qdio;
2509         }
2510         rc = qeth_ulp_setup(card);
2511         if (rc) {
2512                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2513                 goto out_qdio;
2514         }
2515         rc = qeth_alloc_qdio_buffers(card);
2516         if (rc) {
2517                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2518                 goto out_qdio;
2519         }
2520         rc = qeth_qdio_establish(card);
2521         if (rc) {
2522                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2523                 qeth_free_qdio_buffers(card);
2524                 goto out_qdio;
2525         }
2526         rc = qeth_qdio_activate(card);
2527         if (rc) {
2528                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2529                 goto out_qdio;
2530         }
2531         rc = qeth_dm_act(card);
2532         if (rc) {
2533                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2534                 goto out_qdio;
2535         }
2536
2537         return 0;
2538 out_qdio:
2539         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2540         return rc;
2541 }
2542
2543 static void qeth_print_status_with_portname(struct qeth_card *card)
2544 {
2545         char dbf_text[15];
2546         int i;
2547
2548         sprintf(dbf_text, "%s", card->info.portname + 1);
2549         for (i = 0; i < 8; i++)
2550                 dbf_text[i] =
2551                         (char) _ebcasc[(__u8) dbf_text[i]];
2552         dbf_text[8] = 0;
2553         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2554                "with link type %s (portname: %s)\n",
2555                qeth_get_cardname(card),
2556                (card->info.mcl_level[0]) ? " (level: " : "",
2557                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2558                (card->info.mcl_level[0]) ? ")" : "",
2559                qeth_get_cardname_short(card),
2560                dbf_text);
2561
2562 }
2563
2564 static void qeth_print_status_no_portname(struct qeth_card *card)
2565 {
2566         if (card->info.portname[0])
2567                 dev_info(&card->gdev->dev, "Device is a%s "
2568                        "card%s%s%s\nwith link type %s "
2569                        "(no portname needed by interface).\n",
2570                        qeth_get_cardname(card),
2571                        (card->info.mcl_level[0]) ? " (level: " : "",
2572                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2573                        (card->info.mcl_level[0]) ? ")" : "",
2574                        qeth_get_cardname_short(card));
2575         else
2576                 dev_info(&card->gdev->dev, "Device is a%s "
2577                        "card%s%s%s\nwith link type %s.\n",
2578                        qeth_get_cardname(card),
2579                        (card->info.mcl_level[0]) ? " (level: " : "",
2580                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2581                        (card->info.mcl_level[0]) ? ")" : "",
2582                        qeth_get_cardname_short(card));
2583 }
2584
2585 void qeth_print_status_message(struct qeth_card *card)
2586 {
2587         switch (card->info.type) {
2588         case QETH_CARD_TYPE_OSD:
2589         case QETH_CARD_TYPE_OSM:
2590         case QETH_CARD_TYPE_OSX:
2591                 /* VM will use a non-zero first character
2592                  * to indicate a HiperSockets like reporting
2593                  * of the level OSA sets the first character to zero
2594                  * */
2595                 if (!card->info.mcl_level[0]) {
2596                         sprintf(card->info.mcl_level, "%02x%02x",
2597                                 card->info.mcl_level[2],
2598                                 card->info.mcl_level[3]);
2599
2600                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2601                         break;
2602                 }
2603                 /* fallthrough */
2604         case QETH_CARD_TYPE_IQD:
2605                 if ((card->info.guestlan) ||
2606                     (card->info.mcl_level[0] & 0x80)) {
2607                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2608                                 card->info.mcl_level[0]];
2609                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2610                                 card->info.mcl_level[1]];
2611                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2612                                 card->info.mcl_level[2]];
2613                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2614                                 card->info.mcl_level[3]];
2615                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2616                 }
2617                 break;
2618         default:
2619                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2620         }
2621         if (card->info.portname_required)
2622                 qeth_print_status_with_portname(card);
2623         else
2624                 qeth_print_status_no_portname(card);
2625 }
2626 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2627
2628 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2629 {
2630         struct qeth_buffer_pool_entry *entry;
2631
2632         QETH_CARD_TEXT(card, 5, "inwrklst");
2633
2634         list_for_each_entry(entry,
2635                             &card->qdio.init_pool.entry_list, init_list) {
2636                 qeth_put_buffer_pool_entry(card, entry);
2637         }
2638 }
2639
2640 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2641                 struct qeth_card *card)
2642 {
2643         struct list_head *plh;
2644         struct qeth_buffer_pool_entry *entry;
2645         int i, free;
2646         struct page *page;
2647
2648         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2649                 return NULL;
2650
2651         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2652                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2653                 free = 1;
2654                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2655                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2656                                 free = 0;
2657                                 break;
2658                         }
2659                 }
2660                 if (free) {
2661                         list_del_init(&entry->list);
2662                         return entry;
2663                 }
2664         }
2665
2666         /* no free buffer in pool so take first one and swap pages */
2667         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2668                         struct qeth_buffer_pool_entry, list);
2669         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2670                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2671                         page = alloc_page(GFP_ATOMIC);
2672                         if (!page) {
2673                                 return NULL;
2674                         } else {
2675                                 free_page((unsigned long)entry->elements[i]);
2676                                 entry->elements[i] = page_address(page);
2677                                 if (card->options.performance_stats)
2678                                         card->perf_stats.sg_alloc_page_rx++;
2679                         }
2680                 }
2681         }
2682         list_del_init(&entry->list);
2683         return entry;
2684 }
2685
2686 static int qeth_init_input_buffer(struct qeth_card *card,
2687                 struct qeth_qdio_buffer *buf)
2688 {
2689         struct qeth_buffer_pool_entry *pool_entry;
2690         int i;
2691
2692         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2693                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2694                 if (!buf->rx_skb)
2695                         return 1;
2696         }
2697
2698         pool_entry = qeth_find_free_buffer_pool_entry(card);
2699         if (!pool_entry)
2700                 return 1;
2701
2702         /*
2703          * since the buffer is accessed only from the input_tasklet
2704          * there shouldn't be a need to synchronize; also, since we use
2705          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2706          * buffers
2707          */
2708
2709         buf->pool_entry = pool_entry;
2710         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2711                 buf->buffer->element[i].length = PAGE_SIZE;
2712                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2713                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2714                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2715                 else
2716                         buf->buffer->element[i].eflags = 0;
2717                 buf->buffer->element[i].sflags = 0;
2718         }
2719         return 0;
2720 }
2721
2722 int qeth_init_qdio_queues(struct qeth_card *card)
2723 {
2724         int i, j;
2725         int rc;
2726
2727         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2728
2729         /* inbound queue */
2730         memset(card->qdio.in_q->qdio_bufs, 0,
2731                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2732         qeth_initialize_working_pool_list(card);
2733         /*give only as many buffers to hardware as we have buffer pool entries*/
2734         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2735                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2736         card->qdio.in_q->next_buf_to_init =
2737                 card->qdio.in_buf_pool.buf_count - 1;
2738         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2739                      card->qdio.in_buf_pool.buf_count - 1);
2740         if (rc) {
2741                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2742                 return rc;
2743         }
2744
2745         /* completion */
2746         rc = qeth_cq_init(card);
2747         if (rc) {
2748                 return rc;
2749         }
2750
2751         /* outbound queue */
2752         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2753                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2754                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2755                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2756                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2757                                         card->qdio.out_qs[i]->bufs[j],
2758                                         QETH_QDIO_BUF_EMPTY);
2759                 }
2760                 card->qdio.out_qs[i]->card = card;
2761                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2762                 card->qdio.out_qs[i]->do_pack = 0;
2763                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2764                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2765                 atomic_set(&card->qdio.out_qs[i]->state,
2766                            QETH_OUT_Q_UNLOCKED);
2767         }
2768         return 0;
2769 }
2770 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2771
2772 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2773 {
2774         switch (link_type) {
2775         case QETH_LINK_TYPE_HSTR:
2776                 return 2;
2777         default:
2778                 return 1;
2779         }
2780 }
2781
2782 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2783                 struct qeth_ipa_cmd *cmd, __u8 command,
2784                 enum qeth_prot_versions prot)
2785 {
2786         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2787         cmd->hdr.command = command;
2788         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2789         cmd->hdr.seqno = card->seqno.ipa;
2790         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2791         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2792         if (card->options.layer2)
2793                 cmd->hdr.prim_version_no = 2;
2794         else
2795                 cmd->hdr.prim_version_no = 1;
2796         cmd->hdr.param_count = 1;
2797         cmd->hdr.prot_version = prot;
2798         cmd->hdr.ipa_supported = 0;
2799         cmd->hdr.ipa_enabled = 0;
2800 }
2801
2802 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2803                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2804 {
2805         struct qeth_cmd_buffer *iob;
2806         struct qeth_ipa_cmd *cmd;
2807
2808         iob = qeth_wait_for_buffer(&card->write);
2809         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2810         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2811
2812         return iob;
2813 }
2814 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2815
2816 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2817                 char prot_type)
2818 {
2819         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2820         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2821         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2822                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2823 }
2824 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2825
2826 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2827                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2828                         unsigned long),
2829                 void *reply_param)
2830 {
2831         int rc;
2832         char prot_type;
2833
2834         QETH_CARD_TEXT(card, 4, "sendipa");
2835
2836         if (card->options.layer2)
2837                 if (card->info.type == QETH_CARD_TYPE_OSN)
2838                         prot_type = QETH_PROT_OSN2;
2839                 else
2840                         prot_type = QETH_PROT_LAYER2;
2841         else
2842                 prot_type = QETH_PROT_TCPIP;
2843         qeth_prepare_ipa_cmd(card, iob, prot_type);
2844         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2845                                                 iob, reply_cb, reply_param);
2846         if (rc == -ETIME) {
2847                 qeth_clear_ipacmd_list(card);
2848                 qeth_schedule_recovery(card);
2849         }
2850         return rc;
2851 }
2852 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2853
2854 int qeth_send_startlan(struct qeth_card *card)
2855 {
2856         int rc;
2857         struct qeth_cmd_buffer *iob;
2858
2859         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2860
2861         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2862         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2863         return rc;
2864 }
2865 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2866
2867 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2868                 struct qeth_reply *reply, unsigned long data)
2869 {
2870         struct qeth_ipa_cmd *cmd;
2871
2872         QETH_CARD_TEXT(card, 4, "defadpcb");
2873
2874         cmd = (struct qeth_ipa_cmd *) data;
2875         if (cmd->hdr.return_code == 0)
2876                 cmd->hdr.return_code =
2877                         cmd->data.setadapterparms.hdr.return_code;
2878         return 0;
2879 }
2880 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2881
2882 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2883                 struct qeth_reply *reply, unsigned long data)
2884 {
2885         struct qeth_ipa_cmd *cmd;
2886
2887         QETH_CARD_TEXT(card, 3, "quyadpcb");
2888
2889         cmd = (struct qeth_ipa_cmd *) data;
2890         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2891                 card->info.link_type =
2892                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2893                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2894         }
2895         card->options.adp.supported_funcs =
2896                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2897         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2898 }
2899
2900 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2901                 __u32 command, __u32 cmdlen)
2902 {
2903         struct qeth_cmd_buffer *iob;
2904         struct qeth_ipa_cmd *cmd;
2905
2906         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2907                                      QETH_PROT_IPV4);
2908         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2909         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2910         cmd->data.setadapterparms.hdr.command_code = command;
2911         cmd->data.setadapterparms.hdr.used_total = 1;
2912         cmd->data.setadapterparms.hdr.seq_no = 1;
2913
2914         return iob;
2915 }
2916 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2917
2918 int qeth_query_setadapterparms(struct qeth_card *card)
2919 {
2920         int rc;
2921         struct qeth_cmd_buffer *iob;
2922
2923         QETH_CARD_TEXT(card, 3, "queryadp");
2924         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2925                                    sizeof(struct qeth_ipacmd_setadpparms));
2926         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2927         return rc;
2928 }
2929 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2930
2931 static int qeth_query_ipassists_cb(struct qeth_card *card,
2932                 struct qeth_reply *reply, unsigned long data)
2933 {
2934         struct qeth_ipa_cmd *cmd;
2935
2936         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2937
2938         cmd = (struct qeth_ipa_cmd *) data;
2939         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2940                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2941                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2942         } else {
2943                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2944                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2945         }
2946         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2947         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
2948         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2949         return 0;
2950 }
2951
2952 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2953 {
2954         int rc;
2955         struct qeth_cmd_buffer *iob;
2956
2957         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2958         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2959         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2960         return rc;
2961 }
2962 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2963
2964 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2965                 struct qeth_reply *reply, unsigned long data)
2966 {
2967         struct qeth_ipa_cmd *cmd;
2968         __u16 rc;
2969
2970         cmd = (struct qeth_ipa_cmd *)data;
2971         rc = cmd->hdr.return_code;
2972         if (rc)
2973                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2974         else
2975                 card->info.diagass_support = cmd->data.diagass.ext;
2976         return 0;
2977 }
2978
2979 static int qeth_query_setdiagass(struct qeth_card *card)
2980 {
2981         struct qeth_cmd_buffer *iob;
2982         struct qeth_ipa_cmd    *cmd;
2983
2984         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2985         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2986         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2987         cmd->data.diagass.subcmd_len = 16;
2988         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2989         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2990 }
2991
2992 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2993 {
2994         unsigned long info = get_zeroed_page(GFP_KERNEL);
2995         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2996         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2997         struct ccw_dev_id ccwid;
2998         int level, rc;
2999
3000         tid->chpid = card->info.chpid;
3001         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3002         tid->ssid = ccwid.ssid;
3003         tid->devno = ccwid.devno;
3004         if (!info)
3005                 return;
3006
3007         rc = stsi(NULL, 0, 0, 0);
3008         if (rc == -ENOSYS)
3009                 level = rc;
3010         else
3011                 level = (((unsigned int) rc) >> 28);
3012
3013         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
3014                 tid->lparnr = info222->lpar_number;
3015
3016         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
3017                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3018                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3019         }
3020         free_page(info);
3021         return;
3022 }
3023
3024 static int qeth_hw_trap_cb(struct qeth_card *card,
3025                 struct qeth_reply *reply, unsigned long data)
3026 {
3027         struct qeth_ipa_cmd *cmd;
3028         __u16 rc;
3029
3030         cmd = (struct qeth_ipa_cmd *)data;
3031         rc = cmd->hdr.return_code;
3032         if (rc)
3033                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3034         return 0;
3035 }
3036
3037 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3038 {
3039         struct qeth_cmd_buffer *iob;
3040         struct qeth_ipa_cmd *cmd;
3041
3042         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3043         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3044         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3045         cmd->data.diagass.subcmd_len = 80;
3046         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3047         cmd->data.diagass.type = 1;
3048         cmd->data.diagass.action = action;
3049         switch (action) {
3050         case QETH_DIAGS_TRAP_ARM:
3051                 cmd->data.diagass.options = 0x0003;
3052                 cmd->data.diagass.ext = 0x00010000 +
3053                         sizeof(struct qeth_trap_id);
3054                 qeth_get_trap_id(card,
3055                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3056                 break;
3057         case QETH_DIAGS_TRAP_DISARM:
3058                 cmd->data.diagass.options = 0x0001;
3059                 break;
3060         case QETH_DIAGS_TRAP_CAPTURE:
3061                 break;
3062         }
3063         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3064 }
3065 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3066
3067 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3068                 unsigned int qdio_error, const char *dbftext)
3069 {
3070         if (qdio_error) {
3071                 QETH_CARD_TEXT(card, 2, dbftext);
3072                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3073                                buf->element[15].sflags);
3074                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3075                                buf->element[14].sflags);
3076                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3077                 if ((buf->element[15].sflags) == 0x12) {
3078                         card->stats.rx_dropped++;
3079                         return 0;
3080                 } else
3081                         return 1;
3082         }
3083         return 0;
3084 }
3085 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3086
3087 void qeth_buffer_reclaim_work(struct work_struct *work)
3088 {
3089         struct qeth_card *card = container_of(work, struct qeth_card,
3090                 buffer_reclaim_work.work);
3091
3092         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3093         qeth_queue_input_buffer(card, card->reclaim_index);
3094 }
3095
3096 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3097 {
3098         struct qeth_qdio_q *queue = card->qdio.in_q;
3099         struct list_head *lh;
3100         int count;
3101         int i;
3102         int rc;
3103         int newcount = 0;
3104
3105         count = (index < queue->next_buf_to_init)?
3106                 card->qdio.in_buf_pool.buf_count -
3107                 (queue->next_buf_to_init - index) :
3108                 card->qdio.in_buf_pool.buf_count -
3109                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3110         /* only requeue at a certain threshold to avoid SIGAs */
3111         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3112                 for (i = queue->next_buf_to_init;
3113                      i < queue->next_buf_to_init + count; ++i) {
3114                         if (qeth_init_input_buffer(card,
3115                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3116                                 break;
3117                         } else {
3118                                 newcount++;
3119                         }
3120                 }
3121
3122                 if (newcount < count) {
3123                         /* we are in memory shortage so we switch back to
3124                            traditional skb allocation and drop packages */
3125                         atomic_set(&card->force_alloc_skb, 3);
3126                         count = newcount;
3127                 } else {
3128                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3129                 }
3130
3131                 if (!count) {
3132                         i = 0;
3133                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3134                                 i++;
3135                         if (i == card->qdio.in_buf_pool.buf_count) {
3136                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3137                                 card->reclaim_index = index;
3138                                 schedule_delayed_work(
3139                                         &card->buffer_reclaim_work,
3140                                         QETH_RECLAIM_WORK_TIME);
3141                         }
3142                         return;
3143                 }
3144
3145                 /*
3146                  * according to old code it should be avoided to requeue all
3147                  * 128 buffers in order to benefit from PCI avoidance.
3148                  * this function keeps at least one buffer (the buffer at
3149                  * 'index') un-requeued -> this buffer is the first buffer that
3150                  * will be requeued the next time
3151                  */
3152                 if (card->options.performance_stats) {
3153                         card->perf_stats.inbound_do_qdio_cnt++;
3154                         card->perf_stats.inbound_do_qdio_start_time =
3155                                 qeth_get_micros();
3156                 }
3157                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3158                              queue->next_buf_to_init, count);
3159                 if (card->options.performance_stats)
3160                         card->perf_stats.inbound_do_qdio_time +=
3161                                 qeth_get_micros() -
3162                                 card->perf_stats.inbound_do_qdio_start_time;
3163                 if (rc) {
3164                         QETH_CARD_TEXT(card, 2, "qinberr");
3165                 }
3166                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3167                                           QDIO_MAX_BUFFERS_PER_Q;
3168         }
3169 }
3170 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3171
3172 static int qeth_handle_send_error(struct qeth_card *card,
3173                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3174 {
3175         int sbalf15 = buffer->buffer->element[15].sflags;
3176
3177         QETH_CARD_TEXT(card, 6, "hdsnderr");
3178         if (card->info.type == QETH_CARD_TYPE_IQD) {
3179                 if (sbalf15 == 0) {
3180                         qdio_err = 0;
3181                 } else {
3182                         qdio_err = 1;
3183                 }
3184         }
3185         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3186
3187         if (!qdio_err)
3188                 return QETH_SEND_ERROR_NONE;
3189
3190         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3191                 return QETH_SEND_ERROR_RETRY;
3192
3193         QETH_CARD_TEXT(card, 1, "lnkfail");
3194         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3195                        (u16)qdio_err, (u8)sbalf15);
3196         return QETH_SEND_ERROR_LINK_FAILURE;
3197 }
3198
3199 /*
3200  * Switched to packing state if the number of used buffers on a queue
3201  * reaches a certain limit.
3202  */
3203 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3204 {
3205         if (!queue->do_pack) {
3206                 if (atomic_read(&queue->used_buffers)
3207                     >= QETH_HIGH_WATERMARK_PACK){
3208                         /* switch non-PACKING -> PACKING */
3209                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3210                         if (queue->card->options.performance_stats)
3211                                 queue->card->perf_stats.sc_dp_p++;
3212                         queue->do_pack = 1;
3213                 }
3214         }
3215 }
3216
3217 /*
3218  * Switches from packing to non-packing mode. If there is a packing
3219  * buffer on the queue this buffer will be prepared to be flushed.
3220  * In that case 1 is returned to inform the caller. If no buffer
3221  * has to be flushed, zero is returned.
3222  */
3223 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3224 {
3225         struct qeth_qdio_out_buffer *buffer;
3226         int flush_count = 0;
3227
3228         if (queue->do_pack) {
3229                 if (atomic_read(&queue->used_buffers)
3230                     <= QETH_LOW_WATERMARK_PACK) {
3231                         /* switch PACKING -> non-PACKING */
3232                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3233                         if (queue->card->options.performance_stats)
3234                                 queue->card->perf_stats.sc_p_dp++;
3235                         queue->do_pack = 0;
3236                         /* flush packing buffers */
3237                         buffer = queue->bufs[queue->next_buf_to_fill];
3238                         if ((atomic_read(&buffer->state) ==
3239                                                 QETH_QDIO_BUF_EMPTY) &&
3240                             (buffer->next_element_to_fill > 0)) {
3241                                 atomic_set(&buffer->state,
3242                                            QETH_QDIO_BUF_PRIMED);
3243                                 flush_count++;
3244                                 queue->next_buf_to_fill =
3245                                         (queue->next_buf_to_fill + 1) %
3246                                         QDIO_MAX_BUFFERS_PER_Q;
3247                         }
3248                 }
3249         }
3250         return flush_count;
3251 }
3252
3253
3254 /*
3255  * Called to flush a packing buffer if no more pci flags are on the queue.
3256  * Checks if there is a packing buffer and prepares it to be flushed.
3257  * In that case returns 1, otherwise zero.
3258  */
3259 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3260 {
3261         struct qeth_qdio_out_buffer *buffer;
3262
3263         buffer = queue->bufs[queue->next_buf_to_fill];
3264         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3265            (buffer->next_element_to_fill > 0)) {
3266                 /* it's a packing buffer */
3267                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3268                 queue->next_buf_to_fill =
3269                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3270                 return 1;
3271         }
3272         return 0;
3273 }
3274
3275 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3276                                int count)
3277 {
3278         struct qeth_qdio_out_buffer *buf;
3279         int rc;
3280         int i;
3281         unsigned int qdio_flags;
3282
3283         for (i = index; i < index + count; ++i) {
3284                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3285                 buf = queue->bufs[bidx];
3286                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3287                                 SBAL_EFLAGS_LAST_ENTRY;
3288
3289                 if (queue->bufstates)
3290                         queue->bufstates[bidx].user = buf;
3291
3292                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3293                         continue;
3294
3295                 if (!queue->do_pack) {
3296                         if ((atomic_read(&queue->used_buffers) >=
3297                                 (QETH_HIGH_WATERMARK_PACK -
3298                                  QETH_WATERMARK_PACK_FUZZ)) &&
3299                             !atomic_read(&queue->set_pci_flags_count)) {
3300                                 /* it's likely that we'll go to packing
3301                                  * mode soon */
3302                                 atomic_inc(&queue->set_pci_flags_count);
3303                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3304                         }
3305                 } else {
3306                         if (!atomic_read(&queue->set_pci_flags_count)) {
3307                                 /*
3308                                  * there's no outstanding PCI any more, so we
3309                                  * have to request a PCI to be sure the the PCI
3310                                  * will wake at some time in the future then we
3311                                  * can flush packed buffers that might still be
3312                                  * hanging around, which can happen if no
3313                                  * further send was requested by the stack
3314                                  */
3315                                 atomic_inc(&queue->set_pci_flags_count);
3316                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3317                         }
3318                 }
3319         }
3320
3321         queue->card->dev->trans_start = jiffies;
3322         if (queue->card->options.performance_stats) {
3323                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3324                 queue->card->perf_stats.outbound_do_qdio_start_time =
3325                         qeth_get_micros();
3326         }
3327         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3328         if (atomic_read(&queue->set_pci_flags_count))
3329                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3330         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3331                      queue->queue_no, index, count);
3332         if (queue->card->options.performance_stats)
3333                 queue->card->perf_stats.outbound_do_qdio_time +=
3334                         qeth_get_micros() -
3335                         queue->card->perf_stats.outbound_do_qdio_start_time;
3336         atomic_add(count, &queue->used_buffers);
3337         if (rc) {
3338                 queue->card->stats.tx_errors += count;
3339                 /* ignore temporary SIGA errors without busy condition */
3340                 if (rc == -ENOBUFS)
3341                         return;
3342                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3343                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3344                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3345                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3346                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3347
3348                 /* this must not happen under normal circumstances. if it
3349                  * happens something is really wrong -> recover */
3350                 qeth_schedule_recovery(queue->card);
3351                 return;
3352         }
3353         if (queue->card->options.performance_stats)
3354                 queue->card->perf_stats.bufs_sent += count;
3355 }
3356
3357 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3358 {
3359         int index;
3360         int flush_cnt = 0;
3361         int q_was_packing = 0;
3362
3363         /*
3364          * check if weed have to switch to non-packing mode or if
3365          * we have to get a pci flag out on the queue
3366          */
3367         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3368             !atomic_read(&queue->set_pci_flags_count)) {
3369                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3370                                 QETH_OUT_Q_UNLOCKED) {
3371                         /*
3372                          * If we get in here, there was no action in
3373                          * do_send_packet. So, we check if there is a
3374                          * packing buffer to be flushed here.
3375                          */
3376                         netif_stop_queue(queue->card->dev);
3377                         index = queue->next_buf_to_fill;
3378                         q_was_packing = queue->do_pack;
3379                         /* queue->do_pack may change */
3380                         barrier();
3381                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3382                         if (!flush_cnt &&
3383                             !atomic_read(&queue->set_pci_flags_count))
3384                                 flush_cnt +=
3385                                         qeth_flush_buffers_on_no_pci(queue);
3386                         if (queue->card->options.performance_stats &&
3387                             q_was_packing)
3388                                 queue->card->perf_stats.bufs_sent_pack +=
3389                                         flush_cnt;
3390                         if (flush_cnt)
3391                                 qeth_flush_buffers(queue, index, flush_cnt);
3392                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3393                 }
3394         }
3395 }
3396
3397 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3398                 unsigned long card_ptr)
3399 {
3400         struct qeth_card *card = (struct qeth_card *)card_ptr;
3401
3402         if (card->dev && (card->dev->flags & IFF_UP))
3403                 napi_schedule(&card->napi);
3404 }
3405 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3406
3407 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3408 {
3409         int rc;
3410
3411         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3412                 rc = -1;
3413                 goto out;
3414         } else {
3415                 if (card->options.cq == cq) {
3416                         rc = 0;
3417                         goto out;
3418                 }
3419
3420                 if (card->state != CARD_STATE_DOWN &&
3421                     card->state != CARD_STATE_RECOVER) {
3422                         rc = -1;
3423                         goto out;
3424                 }
3425
3426                 qeth_free_qdio_buffers(card);
3427                 card->options.cq = cq;
3428                 rc = 0;
3429         }
3430 out:
3431         return rc;
3432
3433 }
3434 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3435
3436
3437 static void qeth_qdio_cq_handler(struct qeth_card *card,
3438                 unsigned int qdio_err,
3439                 unsigned int queue, int first_element, int count) {
3440         struct qeth_qdio_q *cq = card->qdio.c_q;
3441         int i;
3442         int rc;
3443
3444         if (!qeth_is_cq(card, queue))
3445                 goto out;
3446
3447         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3448         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3449         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3450
3451         if (qdio_err) {
3452                 netif_stop_queue(card->dev);
3453                 qeth_schedule_recovery(card);
3454                 goto out;
3455         }
3456
3457         if (card->options.performance_stats) {
3458                 card->perf_stats.cq_cnt++;
3459                 card->perf_stats.cq_start_time = qeth_get_micros();
3460         }
3461
3462         for (i = first_element; i < first_element + count; ++i) {
3463                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3464                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3465                 int e;
3466
3467                 e = 0;
3468                 while (buffer->element[e].addr) {
3469                         unsigned long phys_aob_addr;
3470
3471                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3472                         qeth_qdio_handle_aob(card, phys_aob_addr);
3473                         buffer->element[e].addr = NULL;
3474                         buffer->element[e].eflags = 0;
3475                         buffer->element[e].sflags = 0;
3476                         buffer->element[e].length = 0;
3477
3478                         ++e;
3479                 }
3480
3481                 buffer->element[15].eflags = 0;
3482                 buffer->element[15].sflags = 0;
3483         }
3484         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3485                     card->qdio.c_q->next_buf_to_init,
3486                     count);
3487         if (rc) {
3488                 dev_warn(&card->gdev->dev,
3489                         "QDIO reported an error, rc=%i\n", rc);
3490                 QETH_CARD_TEXT(card, 2, "qcqherr");
3491         }
3492         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3493                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3494
3495         netif_wake_queue(card->dev);
3496
3497         if (card->options.performance_stats) {
3498                 int delta_t = qeth_get_micros();
3499                 delta_t -= card->perf_stats.cq_start_time;
3500                 card->perf_stats.cq_time += delta_t;
3501         }
3502 out:
3503         return;
3504 }
3505
3506 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3507                 unsigned int queue, int first_elem, int count,
3508                 unsigned long card_ptr)
3509 {
3510         struct qeth_card *card = (struct qeth_card *)card_ptr;
3511
3512         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3513         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3514
3515         if (qeth_is_cq(card, queue))
3516                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3517         else if (qdio_err)
3518                 qeth_schedule_recovery(card);
3519
3520
3521 }
3522 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3523
3524 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3525                 unsigned int qdio_error, int __queue, int first_element,
3526                 int count, unsigned long card_ptr)
3527 {
3528         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3529         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3530         struct qeth_qdio_out_buffer *buffer;
3531         int i;
3532
3533         QETH_CARD_TEXT(card, 6, "qdouhdl");
3534         if (qdio_error & QDIO_ERROR_FATAL) {
3535                 QETH_CARD_TEXT(card, 2, "achkcond");
3536                 netif_stop_queue(card->dev);
3537                 qeth_schedule_recovery(card);
3538                 return;
3539         }
3540         if (card->options.performance_stats) {
3541                 card->perf_stats.outbound_handler_cnt++;
3542                 card->perf_stats.outbound_handler_start_time =
3543                         qeth_get_micros();
3544         }
3545         for (i = first_element; i < (first_element + count); ++i) {
3546                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3547                 buffer = queue->bufs[bidx];
3548                 qeth_handle_send_error(card, buffer, qdio_error);
3549
3550                 if (queue->bufstates &&
3551                     (queue->bufstates[bidx].flags &
3552                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3553                         BUG_ON(card->options.cq != QETH_CQ_ENABLED);
3554
3555                         if (atomic_cmpxchg(&buffer->state,
3556                                            QETH_QDIO_BUF_PRIMED,
3557                                            QETH_QDIO_BUF_PENDING) ==
3558                                 QETH_QDIO_BUF_PRIMED) {
3559                                 qeth_notify_skbs(queue, buffer,
3560                                                  TX_NOTIFY_PENDING);
3561                         }
3562                         buffer->aob = queue->bufstates[bidx].aob;
3563                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3564                         QETH_CARD_TEXT(queue->card, 5, "aob");
3565                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3566                                         virt_to_phys(buffer->aob));
3567                         BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3568                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3569                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3570                                 qeth_schedule_recovery(card);
3571                         }
3572                 } else {
3573                         if (card->options.cq == QETH_CQ_ENABLED) {
3574                                 enum iucv_tx_notify n;
3575
3576                                 n = qeth_compute_cq_notification(
3577                                         buffer->buffer->element[15].sflags, 0);
3578                                 qeth_notify_skbs(queue, buffer, n);
3579                         }
3580
3581                         qeth_clear_output_buffer(queue, buffer,
3582                                                 QETH_QDIO_BUF_EMPTY);
3583                 }
3584                 qeth_cleanup_handled_pending(queue, bidx, 0);
3585         }
3586         atomic_sub(count, &queue->used_buffers);
3587         /* check if we need to do something on this outbound queue */
3588         if (card->info.type != QETH_CARD_TYPE_IQD)
3589                 qeth_check_outbound_queue(queue);
3590
3591         netif_wake_queue(queue->card->dev);
3592         if (card->options.performance_stats)
3593                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3594                         card->perf_stats.outbound_handler_start_time;
3595 }
3596 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3597
3598 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3599                         int ipv, int cast_type)
3600 {
3601         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3602                      card->info.type == QETH_CARD_TYPE_OSX))
3603                 return card->qdio.default_out_queue;
3604         switch (card->qdio.no_out_queues) {
3605         case 4:
3606                 if (cast_type && card->info.is_multicast_different)
3607                         return card->info.is_multicast_different &
3608                                 (card->qdio.no_out_queues - 1);
3609                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3610                         const u8 tos = ip_hdr(skb)->tos;
3611
3612                         if (card->qdio.do_prio_queueing ==
3613                                 QETH_PRIO_Q_ING_TOS) {
3614                                 if (tos & IP_TOS_NOTIMPORTANT)
3615                                         return 3;
3616                                 if (tos & IP_TOS_HIGHRELIABILITY)
3617                                         return 2;
3618                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3619                                         return 1;
3620                                 if (tos & IP_TOS_LOWDELAY)
3621                                         return 0;
3622                         }
3623                         if (card->qdio.do_prio_queueing ==
3624                                 QETH_PRIO_Q_ING_PREC)
3625                                 return 3 - (tos >> 6);
3626                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3627                         /* TODO: IPv6!!! */
3628                 }
3629                 return card->qdio.default_out_queue;
3630         case 1: /* fallthrough for single-out-queue 1920-device */
3631         default:
3632                 return card->qdio.default_out_queue;
3633         }
3634 }
3635 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3636
3637 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3638                      struct sk_buff *skb, int elems)
3639 {
3640         int dlen = skb->len - skb->data_len;
3641         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3642                 PFN_DOWN((unsigned long)skb->data);
3643
3644         elements_needed += skb_shinfo(skb)->nr_frags;
3645         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3646                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3647                         "(Number=%d / Length=%d). Discarded.\n",
3648                         (elements_needed+elems), skb->len);
3649                 return 0;
3650         }
3651         return elements_needed;
3652 }
3653 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3654
3655 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3656 {
3657         int hroom, inpage, rest;
3658
3659         if (((unsigned long)skb->data & PAGE_MASK) !=
3660             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3661                 hroom = skb_headroom(skb);
3662                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3663                 rest = len - inpage;
3664                 if (rest > hroom)
3665                         return 1;
3666                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3667                 skb->data -= rest;
3668                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3669         }
3670         return 0;
3671 }
3672 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3673
3674 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3675         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3676         int offset)
3677 {
3678         int length = skb->len - skb->data_len;
3679         int length_here;
3680         int element;
3681         char *data;
3682         int first_lap, cnt;
3683         struct skb_frag_struct *frag;
3684
3685         element = *next_element_to_fill;
3686         data = skb->data;
3687         first_lap = (is_tso == 0 ? 1 : 0);
3688
3689         if (offset >= 0) {
3690                 data = skb->data + offset;
3691                 length -= offset;
3692                 first_lap = 0;
3693         }
3694
3695         while (length > 0) {
3696                 /* length_here is the remaining amount of data in this page */
3697                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3698                 if (length < length_here)
3699                         length_here = length;
3700
3701                 buffer->element[element].addr = data;
3702                 buffer->element[element].length = length_here;
3703                 length -= length_here;
3704                 if (!length) {
3705                         if (first_lap)
3706                                 if (skb_shinfo(skb)->nr_frags)
3707                                         buffer->element[element].eflags =
3708                                                 SBAL_EFLAGS_FIRST_FRAG;
3709                                 else
3710                                         buffer->element[element].eflags = 0;
3711                         else
3712                                 buffer->element[element].eflags =
3713                                     SBAL_EFLAGS_MIDDLE_FRAG;
3714                 } else {
3715                         if (first_lap)
3716                                 buffer->element[element].eflags =
3717                                     SBAL_EFLAGS_FIRST_FRAG;
3718                         else
3719                                 buffer->element[element].eflags =
3720                                     SBAL_EFLAGS_MIDDLE_FRAG;
3721                 }
3722                 data += length_here;
3723                 element++;
3724                 first_lap = 0;
3725         }
3726
3727         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3728                 frag = &skb_shinfo(skb)->frags[cnt];
3729                 buffer->element[element].addr = (char *)
3730                         page_to_phys(skb_frag_page(frag))
3731                         + frag->page_offset;
3732                 buffer->element[element].length = frag->size;
3733                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3734                 element++;
3735         }
3736
3737         if (buffer->element[element - 1].eflags)
3738                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3739         *next_element_to_fill = element;
3740 }
3741
3742 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3743                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3744                 struct qeth_hdr *hdr, int offset, int hd_len)
3745 {
3746         struct qdio_buffer *buffer;
3747         int flush_cnt = 0, hdr_len, large_send = 0;
3748
3749         buffer = buf->buffer;
3750         atomic_inc(&skb->users);
3751         skb_queue_tail(&buf->skb_list, skb);
3752
3753         /*check first on TSO ....*/
3754         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3755                 int element = buf->next_element_to_fill;
3756
3757                 hdr_len = sizeof(struct qeth_hdr_tso) +
3758                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3759                 /*fill first buffer entry only with header information */
3760                 buffer->element[element].addr = skb->data;
3761                 buffer->element[element].length = hdr_len;
3762                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3763                 buf->next_element_to_fill++;
3764                 skb->data += hdr_len;
3765                 skb->len  -= hdr_len;
3766                 large_send = 1;
3767         }
3768
3769         if (offset >= 0) {
3770                 int element = buf->next_element_to_fill;
3771                 buffer->element[element].addr = hdr;
3772                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3773                                                         hd_len;
3774                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3775                 buf->is_header[element] = 1;
3776                 buf->next_element_to_fill++;
3777         }
3778
3779         __qeth_fill_buffer(skb, buffer, large_send,
3780                 (int *)&buf->next_element_to_fill, offset);
3781
3782         if (!queue->do_pack) {
3783                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3784                 /* set state to PRIMED -> will be flushed */
3785                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3786                 flush_cnt = 1;
3787         } else {
3788                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3789                 if (queue->card->options.performance_stats)
3790                         queue->card->perf_stats.skbs_sent_pack++;
3791                 if (buf->next_element_to_fill >=
3792                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3793                         /*
3794                          * packed buffer if full -> set state PRIMED
3795                          * -> will be flushed
3796                          */
3797                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3798                         flush_cnt = 1;
3799                 }
3800         }
3801         return flush_cnt;
3802 }
3803
3804 int qeth_do_send_packet_fast(struct qeth_card *card,
3805                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3806                 struct qeth_hdr *hdr, int elements_needed,
3807                 int offset, int hd_len)
3808 {
3809         struct qeth_qdio_out_buffer *buffer;
3810         int index;
3811
3812         /* spin until we get the queue ... */
3813         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3814                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3815         /* ... now we've got the queue */
3816         index = queue->next_buf_to_fill;
3817         buffer = queue->bufs[queue->next_buf_to_fill];
3818         /*
3819          * check if buffer is empty to make sure that we do not 'overtake'
3820          * ourselves and try to fill a buffer that is already primed
3821          */
3822         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3823                 goto out;
3824         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3825                                           QDIO_MAX_BUFFERS_PER_Q;
3826         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3827         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3828         qeth_flush_buffers(queue, index, 1);
3829         return 0;
3830 out:
3831         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3832         return -EBUSY;
3833 }
3834 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3835
3836 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3837                 struct sk_buff *skb, struct qeth_hdr *hdr,
3838                 int elements_needed)
3839 {
3840         struct qeth_qdio_out_buffer *buffer;
3841         int start_index;
3842         int flush_count = 0;
3843         int do_pack = 0;
3844         int tmp;
3845         int rc = 0;
3846
3847         /* spin until we get the queue ... */
3848         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3849                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3850         start_index = queue->next_buf_to_fill;
3851         buffer = queue->bufs[queue->next_buf_to_fill];
3852         /*
3853          * check if buffer is empty to make sure that we do not 'overtake'
3854          * ourselves and try to fill a buffer that is already primed
3855          */
3856         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3857                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3858                 return -EBUSY;
3859         }
3860         /* check if we need to switch packing state of this queue */
3861         qeth_switch_to_packing_if_needed(queue);
3862         if (queue->do_pack) {
3863                 do_pack = 1;
3864                 /* does packet fit in current buffer? */
3865                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3866                     buffer->next_element_to_fill) < elements_needed) {
3867                         /* ... no -> set state PRIMED */
3868                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3869                         flush_count++;
3870                         queue->next_buf_to_fill =
3871                                 (queue->next_buf_to_fill + 1) %
3872                                 QDIO_MAX_BUFFERS_PER_Q;
3873                         buffer = queue->bufs[queue->next_buf_to_fill];
3874                         /* we did a step forward, so check buffer state
3875                          * again */
3876                         if (atomic_read(&buffer->state) !=
3877                             QETH_QDIO_BUF_EMPTY) {
3878                                 qeth_flush_buffers(queue, start_index,
3879                                                            flush_count);
3880                                 atomic_set(&queue->state,
3881                                                 QETH_OUT_Q_UNLOCKED);
3882                                 return -EBUSY;
3883                         }
3884                 }
3885         }
3886         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3887         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3888                                   QDIO_MAX_BUFFERS_PER_Q;
3889         flush_count += tmp;
3890         if (flush_count)
3891                 qeth_flush_buffers(queue, start_index, flush_count);
3892         else if (!atomic_read(&queue->set_pci_flags_count))
3893                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3894         /*
3895          * queue->state will go from LOCKED -> UNLOCKED or from
3896          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3897          * (switch packing state or flush buffer to get another pci flag out).
3898          * In that case we will enter this loop
3899          */
3900         while (atomic_dec_return(&queue->state)) {
3901                 flush_count = 0;
3902                 start_index = queue->next_buf_to_fill;
3903                 /* check if we can go back to non-packing state */
3904                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3905                 /*
3906                  * check if we need to flush a packing buffer to get a pci
3907                  * flag out on the queue
3908                  */
3909                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3910                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3911                 if (flush_count)
3912                         qeth_flush_buffers(queue, start_index, flush_count);
3913         }
3914         /* at this point the queue is UNLOCKED again */
3915         if (queue->card->options.performance_stats && do_pack)
3916                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3917
3918         return rc;
3919 }
3920 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3921
3922 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3923                 struct qeth_reply *reply, unsigned long data)
3924 {
3925         struct qeth_ipa_cmd *cmd;
3926         struct qeth_ipacmd_setadpparms *setparms;
3927
3928         QETH_CARD_TEXT(card, 4, "prmadpcb");
3929
3930         cmd = (struct qeth_ipa_cmd *) data;
3931         setparms = &(cmd->data.setadapterparms);
3932
3933         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3934         if (cmd->hdr.return_code) {
3935                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3936                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3937         }
3938         card->info.promisc_mode = setparms->data.mode;
3939         return 0;
3940 }
3941
3942 void qeth_setadp_promisc_mode(struct qeth_card *card)
3943 {
3944         enum qeth_ipa_promisc_modes mode;
3945         struct net_device *dev = card->dev;
3946         struct qeth_cmd_buffer *iob;
3947         struct qeth_ipa_cmd *cmd;
3948
3949         QETH_CARD_TEXT(card, 4, "setprom");
3950
3951         if (((dev->flags & IFF_PROMISC) &&
3952              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3953             (!(dev->flags & IFF_PROMISC) &&
3954              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3955                 return;
3956         mode = SET_PROMISC_MODE_OFF;
3957         if (dev->flags & IFF_PROMISC)
3958                 mode = SET_PROMISC_MODE_ON;
3959         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3960
3961         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3962                         sizeof(struct qeth_ipacmd_setadpparms));
3963         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3964         cmd->data.setadapterparms.data.mode = mode;
3965         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3966 }
3967 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3968
3969 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3970 {
3971         struct qeth_card *card;
3972         char dbf_text[15];
3973
3974         card = dev->ml_priv;
3975
3976         QETH_CARD_TEXT(card, 4, "chgmtu");
3977         sprintf(dbf_text, "%8x", new_mtu);
3978         QETH_CARD_TEXT(card, 4, dbf_text);
3979
3980         if (new_mtu < 64)
3981                 return -EINVAL;
3982         if (new_mtu > 65535)
3983                 return -EINVAL;
3984         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3985             (!qeth_mtu_is_valid(card, new_mtu)))
3986                 return -EINVAL;
3987         dev->mtu = new_mtu;
3988         return 0;
3989 }
3990 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3991
3992 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3993 {
3994         struct qeth_card *card;
3995
3996         card = dev->ml_priv;
3997
3998         QETH_CARD_TEXT(card, 5, "getstat");
3999
4000         return &card->stats;
4001 }
4002 EXPORT_SYMBOL_GPL(qeth_get_stats);
4003
4004 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4005                 struct qeth_reply *reply, unsigned long data)
4006 {
4007         struct qeth_ipa_cmd *cmd;
4008
4009         QETH_CARD_TEXT(card, 4, "chgmaccb");
4010
4011         cmd = (struct qeth_ipa_cmd *) data;
4012         if (!card->options.layer2 ||
4013             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4014                 memcpy(card->dev->dev_addr,
4015                        &cmd->data.setadapterparms.data.change_addr.addr,
4016                        OSA_ADDR_LEN);
4017                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4018         }
4019         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4020         return 0;
4021 }
4022
4023 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4024 {
4025         int rc;
4026         struct qeth_cmd_buffer *iob;
4027         struct qeth_ipa_cmd *cmd;
4028
4029         QETH_CARD_TEXT(card, 4, "chgmac");
4030
4031         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4032                                    sizeof(struct qeth_ipacmd_setadpparms));
4033         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4034         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4035         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4036         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4037                card->dev->dev_addr, OSA_ADDR_LEN);
4038         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4039                                NULL);
4040         return rc;
4041 }
4042 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4043
4044 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4045                 struct qeth_reply *reply, unsigned long data)
4046 {
4047         struct qeth_ipa_cmd *cmd;
4048         struct qeth_set_access_ctrl *access_ctrl_req;
4049
4050         QETH_CARD_TEXT(card, 4, "setaccb");
4051
4052         cmd = (struct qeth_ipa_cmd *) data;
4053         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4054         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4055         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4056         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4057                 cmd->data.setadapterparms.hdr.return_code);
4058         switch (cmd->data.setadapterparms.hdr.return_code) {
4059         case SET_ACCESS_CTRL_RC_SUCCESS:
4060         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4061         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4062         {
4063                 card->options.isolation = access_ctrl_req->subcmd_code;
4064                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4065                         dev_info(&card->gdev->dev,
4066                             "QDIO data connection isolation is deactivated\n");
4067                 } else {
4068                         dev_info(&card->gdev->dev,
4069                             "QDIO data connection isolation is activated\n");
4070                 }
4071                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
4072                         card->gdev->dev.kobj.name,
4073                         access_ctrl_req->subcmd_code,
4074                         cmd->data.setadapterparms.hdr.return_code);
4075                 break;
4076         }
4077         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4078         {
4079                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4080                         card->gdev->dev.kobj.name,
4081                         access_ctrl_req->subcmd_code,
4082                         cmd->data.setadapterparms.hdr.return_code);
4083                 dev_err(&card->gdev->dev, "Adapter does not "
4084                         "support QDIO data connection isolation\n");
4085
4086                 /* ensure isolation mode is "none" */
4087                 card->options.isolation = ISOLATION_MODE_NONE;
4088                 break;
4089         }
4090         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4091         {
4092                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4093                         card->gdev->dev.kobj.name,
4094                         access_ctrl_req->subcmd_code,
4095                         cmd->data.setadapterparms.hdr.return_code);
4096                 dev_err(&card->gdev->dev,
4097                         "Adapter is dedicated. "
4098                         "QDIO data connection isolation not supported\n");
4099
4100                 /* ensure isolation mode is "none" */
4101                 card->options.isolation = ISOLATION_MODE_NONE;
4102                 break;
4103         }
4104         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4105         {
4106                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4107                         card->gdev->dev.kobj.name,
4108                         access_ctrl_req->subcmd_code,
4109                         cmd->data.setadapterparms.hdr.return_code);
4110                 dev_err(&card->gdev->dev,
4111                         "TSO does not permit QDIO data connection isolation\n");
4112
4113                 /* ensure isolation mode is "none" */
4114                 card->options.isolation = ISOLATION_MODE_NONE;
4115                 break;
4116         }
4117         default:
4118         {
4119                 /* this should never happen */
4120                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
4121                         "==UNKNOWN\n",
4122                         card->gdev->dev.kobj.name,
4123                         access_ctrl_req->subcmd_code,
4124                         cmd->data.setadapterparms.hdr.return_code);
4125
4126                 /* ensure isolation mode is "none" */
4127                 card->options.isolation = ISOLATION_MODE_NONE;
4128                 break;
4129         }
4130         }
4131         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4132         return 0;
4133 }
4134
4135 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4136                 enum qeth_ipa_isolation_modes isolation)
4137 {
4138         int rc;
4139         struct qeth_cmd_buffer *iob;
4140         struct qeth_ipa_cmd *cmd;
4141         struct qeth_set_access_ctrl *access_ctrl_req;
4142
4143         QETH_CARD_TEXT(card, 4, "setacctl");
4144
4145         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4146         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4147
4148         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4149                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4150                                    sizeof(struct qeth_set_access_ctrl));
4151         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4152         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4153         access_ctrl_req->subcmd_code = isolation;
4154
4155         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4156                                NULL);
4157         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4158         return rc;
4159 }
4160
4161 int qeth_set_access_ctrl_online(struct qeth_card *card)
4162 {
4163         int rc = 0;
4164
4165         QETH_CARD_TEXT(card, 4, "setactlo");
4166
4167         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4168              card->info.type == QETH_CARD_TYPE_OSX) &&
4169              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4170                 rc = qeth_setadpparms_set_access_ctrl(card,
4171                         card->options.isolation);
4172                 if (rc) {
4173                         QETH_DBF_MESSAGE(3,
4174                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4175                                 card->gdev->dev.kobj.name,
4176                                 rc);
4177                 }
4178         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4179                 card->options.isolation = ISOLATION_MODE_NONE;
4180
4181                 dev_err(&card->gdev->dev, "Adapter does not "
4182                         "support QDIO data connection isolation\n");
4183                 rc = -EOPNOTSUPP;
4184         }
4185         return rc;
4186 }
4187 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4188
4189 void qeth_tx_timeout(struct net_device *dev)
4190 {
4191         struct qeth_card *card;
4192
4193         card = dev->ml_priv;
4194         QETH_CARD_TEXT(card, 4, "txtimeo");
4195         card->stats.tx_errors++;
4196         qeth_schedule_recovery(card);
4197 }
4198 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4199
4200 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4201 {
4202         struct qeth_card *card = dev->ml_priv;
4203         int rc = 0;
4204
4205         switch (regnum) {
4206         case MII_BMCR: /* Basic mode control register */
4207                 rc = BMCR_FULLDPLX;
4208                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4209                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4210                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4211                         rc |= BMCR_SPEED100;
4212                 break;
4213         case MII_BMSR: /* Basic mode status register */
4214                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4215                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4216                      BMSR_100BASE4;
4217                 break;
4218         case MII_PHYSID1: /* PHYS ID 1 */
4219                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4220                      dev->dev_addr[2];
4221                 rc = (rc >> 5) & 0xFFFF;
4222                 break;
4223         case MII_PHYSID2: /* PHYS ID 2 */
4224                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4225                 break;
4226         case MII_ADVERTISE: /* Advertisement control reg */
4227                 rc = ADVERTISE_ALL;
4228                 break;
4229         case MII_LPA: /* Link partner ability reg */
4230                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4231                      LPA_100BASE4 | LPA_LPACK;
4232                 break;
4233         case MII_EXPANSION: /* Expansion register */
4234                 break;
4235         case MII_DCOUNTER: /* disconnect counter */
4236                 break;
4237         case MII_FCSCOUNTER: /* false carrier counter */
4238                 break;
4239         case MII_NWAYTEST: /* N-way auto-neg test register */
4240                 break;
4241         case MII_RERRCOUNTER: /* rx error counter */
4242                 rc = card->stats.rx_errors;
4243                 break;
4244         case MII_SREVISION: /* silicon revision */
4245                 break;
4246         case MII_RESV1: /* reserved 1 */
4247                 break;
4248         case MII_LBRERROR: /* loopback, rx, bypass error */
4249                 break;
4250         case MII_PHYADDR: /* physical address */
4251                 break;
4252         case MII_RESV2: /* reserved 2 */
4253                 break;
4254         case MII_TPISTATUS: /* TPI status for 10mbps */
4255                 break;
4256         case MII_NCONFIG: /* network interface config */
4257                 break;
4258         default:
4259                 break;
4260         }
4261         return rc;
4262 }
4263 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4264
4265 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4266                 struct qeth_cmd_buffer *iob, int len,
4267                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4268                         unsigned long),
4269                 void *reply_param)
4270 {
4271         u16 s1, s2;
4272
4273         QETH_CARD_TEXT(card, 4, "sendsnmp");
4274
4275         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4276         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4277                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4278         /* adjust PDU length fields in IPA_PDU_HEADER */
4279         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4280         s2 = (u32) len;
4281         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4282         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4283         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4284         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4285         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4286                                       reply_cb, reply_param);
4287 }
4288
4289 static int qeth_snmp_command_cb(struct qeth_card *card,
4290                 struct qeth_reply *reply, unsigned long sdata)
4291 {
4292         struct qeth_ipa_cmd *cmd;
4293         struct qeth_arp_query_info *qinfo;
4294         struct qeth_snmp_cmd *snmp;
4295         unsigned char *data;
4296         __u16 data_len;
4297
4298         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4299
4300         cmd = (struct qeth_ipa_cmd *) sdata;
4301         data = (unsigned char *)((char *)cmd - reply->offset);
4302         qinfo = (struct qeth_arp_query_info *) reply->param;
4303         snmp = &cmd->data.setadapterparms.data.snmp;
4304
4305         if (cmd->hdr.return_code) {
4306                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4307                 return 0;
4308         }
4309         if (cmd->data.setadapterparms.hdr.return_code) {
4310                 cmd->hdr.return_code =
4311                         cmd->data.setadapterparms.hdr.return_code;
4312                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4313                 return 0;
4314         }
4315         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4316         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4317                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4318         else
4319                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4320
4321         /* check if there is enough room in userspace */
4322         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4323                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4324                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4325                 return 0;
4326         }
4327         QETH_CARD_TEXT_(card, 4, "snore%i",
4328                        cmd->data.setadapterparms.hdr.used_total);
4329         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4330                 cmd->data.setadapterparms.hdr.seq_no);
4331         /*copy entries to user buffer*/
4332         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4333                 memcpy(qinfo->udata + qinfo->udata_offset,
4334                        (char *)snmp,
4335                        data_len + offsetof(struct qeth_snmp_cmd, data));
4336                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4337         } else {
4338                 memcpy(qinfo->udata + qinfo->udata_offset,
4339                        (char *)&snmp->request, data_len);
4340         }
4341         qinfo->udata_offset += data_len;
4342         /* check if all replies received ... */
4343                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4344                                cmd->data.setadapterparms.hdr.used_total);
4345                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4346                                cmd->data.setadapterparms.hdr.seq_no);
4347         if (cmd->data.setadapterparms.hdr.seq_no <
4348             cmd->data.setadapterparms.hdr.used_total)
4349                 return 1;
4350         return 0;
4351 }
4352
4353 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4354 {
4355         struct qeth_cmd_buffer *iob;
4356         struct qeth_ipa_cmd *cmd;
4357         struct qeth_snmp_ureq *ureq;
4358         int req_len;
4359         struct qeth_arp_query_info qinfo = {0, };
4360         int rc = 0;
4361
4362         QETH_CARD_TEXT(card, 3, "snmpcmd");
4363
4364         if (card->info.guestlan)
4365                 return -EOPNOTSUPP;
4366
4367         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4368             (!card->options.layer2)) {
4369                 return -EOPNOTSUPP;
4370         }
4371         /* skip 4 bytes (data_len struct member) to get req_len */
4372         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4373                 return -EFAULT;
4374         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4375         if (IS_ERR(ureq)) {
4376                 QETH_CARD_TEXT(card, 2, "snmpnome");
4377                 return PTR_ERR(ureq);
4378         }
4379         qinfo.udata_len = ureq->hdr.data_len;
4380         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4381         if (!qinfo.udata) {
4382                 kfree(ureq);
4383                 return -ENOMEM;
4384         }
4385         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4386
4387         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4388                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4389         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4390         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4391         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4392                                     qeth_snmp_command_cb, (void *)&qinfo);
4393         if (rc)
4394                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4395                            QETH_CARD_IFNAME(card), rc);
4396         else {
4397                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4398                         rc = -EFAULT;
4399         }
4400
4401         kfree(ureq);
4402         kfree(qinfo.udata);
4403         return rc;
4404 }
4405 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4406
4407 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4408                 struct qeth_reply *reply, unsigned long data)
4409 {
4410         struct qeth_ipa_cmd *cmd;
4411         struct qeth_qoat_priv *priv;
4412         char *resdata;
4413         int resdatalen;
4414
4415         QETH_CARD_TEXT(card, 3, "qoatcb");
4416
4417         cmd = (struct qeth_ipa_cmd *)data;
4418         priv = (struct qeth_qoat_priv *)reply->param;
4419         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4420         resdata = (char *)data + 28;
4421
4422         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4423                 cmd->hdr.return_code = IPA_RC_FFFF;
4424                 return 0;
4425         }
4426
4427         memcpy((priv->buffer + priv->response_len), resdata,
4428                 resdatalen);
4429         priv->response_len += resdatalen;
4430
4431         if (cmd->data.setadapterparms.hdr.seq_no <
4432             cmd->data.setadapterparms.hdr.used_total)
4433                 return 1;
4434         return 0;
4435 }
4436
4437 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4438 {
4439         int rc = 0;
4440         struct qeth_cmd_buffer *iob;
4441         struct qeth_ipa_cmd *cmd;
4442         struct qeth_query_oat *oat_req;
4443         struct qeth_query_oat_data oat_data;
4444         struct qeth_qoat_priv priv;
4445         void __user *tmp;
4446
4447         QETH_CARD_TEXT(card, 3, "qoatcmd");
4448
4449         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4450                 rc = -EOPNOTSUPP;
4451                 goto out;
4452         }
4453
4454         if (copy_from_user(&oat_data, udata,
4455             sizeof(struct qeth_query_oat_data))) {
4456                         rc = -EFAULT;
4457                         goto out;
4458         }
4459
4460         priv.buffer_len = oat_data.buffer_len;
4461         priv.response_len = 0;
4462         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4463         if (!priv.buffer) {
4464                 rc = -ENOMEM;
4465                 goto out;
4466         }
4467
4468         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4469                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4470                                    sizeof(struct qeth_query_oat));
4471         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4472         oat_req = &cmd->data.setadapterparms.data.query_oat;
4473         oat_req->subcmd_code = oat_data.command;
4474
4475         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4476                                &priv);
4477         if (!rc) {
4478                 if (is_compat_task())
4479                         tmp = compat_ptr(oat_data.ptr);
4480                 else
4481                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4482
4483                 if (copy_to_user(tmp, priv.buffer,
4484                     priv.response_len)) {
4485                         rc = -EFAULT;
4486                         goto out_free;
4487                 }
4488
4489                 oat_data.response_len = priv.response_len;
4490
4491                 if (copy_to_user(udata, &oat_data,
4492                     sizeof(struct qeth_query_oat_data)))
4493                         rc = -EFAULT;
4494         } else
4495                 if (rc == IPA_RC_FFFF)
4496                         rc = -EFAULT;
4497
4498 out_free:
4499         kfree(priv.buffer);
4500 out:
4501         return rc;
4502 }
4503 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4504
4505 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4506 {
4507         switch (card->info.type) {
4508         case QETH_CARD_TYPE_IQD:
4509                 return 2;
4510         default:
4511                 return 0;
4512         }
4513 }
4514
4515 static void qeth_determine_capabilities(struct qeth_card *card)
4516 {
4517         int rc;
4518         int length;
4519         char *prcd;
4520         struct ccw_device *ddev;
4521         int ddev_offline = 0;
4522
4523         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4524         ddev = CARD_DDEV(card);
4525         if (!ddev->online) {
4526                 ddev_offline = 1;
4527                 rc = ccw_device_set_online(ddev);
4528                 if (rc) {
4529                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4530                         goto out;
4531                 }
4532         }
4533
4534         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4535         if (rc) {
4536                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4537                         dev_name(&card->gdev->dev), rc);
4538                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4539                 goto out_offline;
4540         }
4541         qeth_configure_unitaddr(card, prcd);
4542         if (ddev_offline)
4543                 qeth_configure_blkt_default(card, prcd);
4544         kfree(prcd);
4545
4546         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4547         if (rc)
4548                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4549
4550         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4551         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4552         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4553         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4554         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4555             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4556             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4557                 dev_info(&card->gdev->dev,
4558                         "Completion Queueing supported\n");
4559         } else {
4560                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4561         }
4562
4563
4564 out_offline:
4565         if (ddev_offline == 1)
4566                 ccw_device_set_offline(ddev);
4567 out:
4568         return;
4569 }
4570
4571 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4572         struct qdio_buffer **in_sbal_ptrs,
4573         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4574         int i;
4575
4576         if (card->options.cq == QETH_CQ_ENABLED) {
4577                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4578                              (card->qdio.no_in_queues - 1);
4579                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4580                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4581                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4582                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4583                 }
4584
4585                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4586         }
4587 }
4588
4589 static int qeth_qdio_establish(struct qeth_card *card)
4590 {
4591         struct qdio_initialize init_data;
4592         char *qib_param_field;
4593         struct qdio_buffer **in_sbal_ptrs;
4594         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4595         struct qdio_buffer **out_sbal_ptrs;
4596         int i, j, k;
4597         int rc = 0;
4598
4599         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4600
4601         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4602                               GFP_KERNEL);
4603         if (!qib_param_field) {
4604                 rc =  -ENOMEM;
4605                 goto out_free_nothing;
4606         }
4607
4608         qeth_create_qib_param_field(card, qib_param_field);
4609         qeth_create_qib_param_field_blkt(card, qib_param_field);
4610
4611         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4612                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4613                                GFP_KERNEL);
4614         if (!in_sbal_ptrs) {
4615                 rc = -ENOMEM;
4616                 goto out_free_qib_param;
4617         }
4618         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4619                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4620                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4621         }
4622
4623         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4624                                    GFP_KERNEL);
4625         if (!queue_start_poll) {
4626                 rc = -ENOMEM;
4627                 goto out_free_in_sbals;
4628         }
4629         for (i = 0; i < card->qdio.no_in_queues; ++i)
4630                 queue_start_poll[i] = card->discipline->start_poll;
4631
4632         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4633
4634         out_sbal_ptrs =
4635                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4636                         sizeof(void *), GFP_KERNEL);
4637         if (!out_sbal_ptrs) {
4638                 rc = -ENOMEM;
4639                 goto out_free_queue_start_poll;
4640         }
4641         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4642                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4643                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4644                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4645                 }
4646
4647         memset(&init_data, 0, sizeof(struct qdio_initialize));
4648         init_data.cdev                   = CARD_DDEV(card);
4649         init_data.q_format               = qeth_get_qdio_q_format(card);
4650         init_data.qib_param_field_format = 0;
4651         init_data.qib_param_field        = qib_param_field;
4652         init_data.no_input_qs            = card->qdio.no_in_queues;
4653         init_data.no_output_qs           = card->qdio.no_out_queues;
4654         init_data.input_handler          = card->discipline->input_handler;
4655         init_data.output_handler         = card->discipline->output_handler;
4656         init_data.queue_start_poll_array = queue_start_poll;
4657         init_data.int_parm               = (unsigned long) card;
4658         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4659         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4660         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4661         init_data.scan_threshold =
4662                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4663
4664         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4665                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4666                 rc = qdio_allocate(&init_data);
4667                 if (rc) {
4668                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4669                         goto out;
4670                 }
4671                 rc = qdio_establish(&init_data);
4672                 if (rc) {
4673                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4674                         qdio_free(CARD_DDEV(card));
4675                 }
4676         }
4677
4678         switch (card->options.cq) {
4679         case QETH_CQ_ENABLED:
4680                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4681                 break;
4682         case QETH_CQ_DISABLED:
4683                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4684                 break;
4685         default:
4686                 break;
4687         }
4688 out:
4689         kfree(out_sbal_ptrs);
4690 out_free_queue_start_poll:
4691         kfree(queue_start_poll);
4692 out_free_in_sbals:
4693         kfree(in_sbal_ptrs);
4694 out_free_qib_param:
4695         kfree(qib_param_field);
4696 out_free_nothing:
4697         return rc;
4698 }
4699
4700 static void qeth_core_free_card(struct qeth_card *card)
4701 {
4702
4703         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4704         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4705         qeth_clean_channel(&card->read);
4706         qeth_clean_channel(&card->write);
4707         if (card->dev)
4708                 free_netdev(card->dev);
4709         kfree(card->ip_tbd_list);
4710         qeth_free_qdio_buffers(card);
4711         unregister_service_level(&card->qeth_service_level);
4712         kfree(card);
4713 }
4714
4715 static struct ccw_device_id qeth_ids[] = {
4716         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4717                                         .driver_info = QETH_CARD_TYPE_OSD},
4718         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4719                                         .driver_info = QETH_CARD_TYPE_IQD},
4720         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4721                                         .driver_info = QETH_CARD_TYPE_OSN},
4722         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4723                                         .driver_info = QETH_CARD_TYPE_OSM},
4724         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4725                                         .driver_info = QETH_CARD_TYPE_OSX},
4726         {},
4727 };
4728 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4729
4730 static struct ccw_driver qeth_ccw_driver = {
4731         .driver = {
4732                 .owner = THIS_MODULE,
4733                 .name = "qeth",
4734         },
4735         .ids = qeth_ids,
4736         .probe = ccwgroup_probe_ccwdev,
4737         .remove = ccwgroup_remove_ccwdev,
4738 };
4739
4740 int qeth_core_hardsetup_card(struct qeth_card *card)
4741 {
4742         int retries = 0;
4743         int rc;
4744
4745         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4746         atomic_set(&card->force_alloc_skb, 0);
4747         qeth_get_channel_path_desc(card);
4748 retry:
4749         if (retries)
4750                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4751                         dev_name(&card->gdev->dev));
4752         ccw_device_set_offline(CARD_DDEV(card));
4753         ccw_device_set_offline(CARD_WDEV(card));
4754         ccw_device_set_offline(CARD_RDEV(card));
4755         rc = ccw_device_set_online(CARD_RDEV(card));
4756         if (rc)
4757                 goto retriable;
4758         rc = ccw_device_set_online(CARD_WDEV(card));
4759         if (rc)
4760                 goto retriable;
4761         rc = ccw_device_set_online(CARD_DDEV(card));
4762         if (rc)
4763                 goto retriable;
4764         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4765 retriable:
4766         if (rc == -ERESTARTSYS) {
4767                 QETH_DBF_TEXT(SETUP, 2, "break1");
4768                 return rc;
4769         } else if (rc) {
4770                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4771                 if (++retries > 3)
4772                         goto out;
4773                 else
4774                         goto retry;
4775         }
4776         qeth_determine_capabilities(card);
4777         qeth_init_tokens(card);
4778         qeth_init_func_level(card);
4779         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4780         if (rc == -ERESTARTSYS) {
4781                 QETH_DBF_TEXT(SETUP, 2, "break2");
4782                 return rc;
4783         } else if (rc) {
4784                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4785                 if (--retries < 0)
4786                         goto out;
4787                 else
4788                         goto retry;
4789         }
4790         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4791         if (rc == -ERESTARTSYS) {
4792                 QETH_DBF_TEXT(SETUP, 2, "break3");
4793                 return rc;
4794         } else if (rc) {
4795                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4796                 if (--retries < 0)
4797                         goto out;
4798                 else
4799                         goto retry;
4800         }
4801         card->read_or_write_problem = 0;
4802         rc = qeth_mpc_initialize(card);
4803         if (rc) {
4804                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4805                 goto out;
4806         }
4807
4808         card->options.ipa4.supported_funcs = 0;
4809         card->options.adp.supported_funcs = 0;
4810         card->info.diagass_support = 0;
4811         qeth_query_ipassists(card, QETH_PROT_IPV4);
4812         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4813                 qeth_query_setadapterparms(card);
4814         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4815                 qeth_query_setdiagass(card);
4816         return 0;
4817 out:
4818         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4819                 "an error on the device\n");
4820         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4821                 dev_name(&card->gdev->dev), rc);
4822         return rc;
4823 }
4824 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4825
4826 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4827                 struct qdio_buffer_element *element,
4828                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4829 {
4830         struct page *page = virt_to_page(element->addr);
4831         if (*pskb == NULL) {
4832                 if (qethbuffer->rx_skb) {
4833                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4834                         *pskb = qethbuffer->rx_skb;
4835                         qethbuffer->rx_skb = NULL;
4836                 } else {
4837                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4838                         if (!(*pskb))
4839                                 return -ENOMEM;
4840                 }
4841
4842                 skb_reserve(*pskb, ETH_HLEN);
4843                 if (data_len <= QETH_RX_PULL_LEN) {
4844                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4845                                 data_len);
4846                 } else {
4847                         get_page(page);
4848                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4849                                element->addr + offset, QETH_RX_PULL_LEN);
4850                         skb_fill_page_desc(*pskb, *pfrag, page,
4851                                 offset + QETH_RX_PULL_LEN,
4852                                 data_len - QETH_RX_PULL_LEN);
4853                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4854                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4855                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4856                         (*pfrag)++;
4857                 }
4858         } else {
4859                 get_page(page);
4860                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4861                 (*pskb)->data_len += data_len;
4862                 (*pskb)->len      += data_len;
4863                 (*pskb)->truesize += data_len;
4864                 (*pfrag)++;
4865         }
4866
4867
4868         return 0;
4869 }
4870
4871 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4872                 struct qeth_qdio_buffer *qethbuffer,
4873                 struct qdio_buffer_element **__element, int *__offset,
4874                 struct qeth_hdr **hdr)
4875 {
4876         struct qdio_buffer_element *element = *__element;
4877         struct qdio_buffer *buffer = qethbuffer->buffer;
4878         int offset = *__offset;
4879         struct sk_buff *skb = NULL;
4880         int skb_len = 0;
4881         void *data_ptr;
4882         int data_len;
4883         int headroom = 0;
4884         int use_rx_sg = 0;
4885         int frag = 0;
4886
4887         /* qeth_hdr must not cross element boundaries */
4888         if (element->length < offset + sizeof(struct qeth_hdr)) {
4889                 if (qeth_is_last_sbale(element))
4890                         return NULL;
4891                 element++;
4892                 offset = 0;
4893                 if (element->length < sizeof(struct qeth_hdr))
4894                         return NULL;
4895         }
4896         *hdr = element->addr + offset;
4897
4898         offset += sizeof(struct qeth_hdr);
4899         switch ((*hdr)->hdr.l2.id) {
4900         case QETH_HEADER_TYPE_LAYER2:
4901                 skb_len = (*hdr)->hdr.l2.pkt_length;
4902                 break;
4903         case QETH_HEADER_TYPE_LAYER3:
4904                 skb_len = (*hdr)->hdr.l3.length;
4905                 headroom = ETH_HLEN;
4906                 break;
4907         case QETH_HEADER_TYPE_OSN:
4908                 skb_len = (*hdr)->hdr.osn.pdu_length;
4909                 headroom = sizeof(struct qeth_hdr);
4910                 break;
4911         default:
4912                 break;
4913         }
4914
4915         if (!skb_len)
4916                 return NULL;
4917
4918         if (((skb_len >= card->options.rx_sg_cb) &&
4919              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4920              (!atomic_read(&card->force_alloc_skb))) ||
4921             (card->options.cq == QETH_CQ_ENABLED)) {
4922                 use_rx_sg = 1;
4923         } else {
4924                 skb = dev_alloc_skb(skb_len + headroom);
4925                 if (!skb)
4926                         goto no_mem;
4927                 if (headroom)
4928                         skb_reserve(skb, headroom);
4929         }
4930
4931         data_ptr = element->addr + offset;
4932         while (skb_len) {
4933                 data_len = min(skb_len, (int)(element->length - offset));
4934                 if (data_len) {
4935                         if (use_rx_sg) {
4936                                 if (qeth_create_skb_frag(qethbuffer, element,
4937                                     &skb, offset, &frag, data_len))
4938                                         goto no_mem;
4939                         } else {
4940                                 memcpy(skb_put(skb, data_len), data_ptr,
4941                                         data_len);
4942                         }
4943                 }
4944                 skb_len -= data_len;
4945                 if (skb_len) {
4946                         if (qeth_is_last_sbale(element)) {
4947                                 QETH_CARD_TEXT(card, 4, "unexeob");
4948                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4949                                 dev_kfree_skb_any(skb);
4950                                 card->stats.rx_errors++;
4951                                 return NULL;
4952                         }
4953                         element++;
4954                         offset = 0;
4955                         data_ptr = element->addr;
4956                 } else {
4957                         offset += data_len;
4958                 }
4959         }
4960         *__element = element;
4961         *__offset = offset;
4962         if (use_rx_sg && card->options.performance_stats) {
4963                 card->perf_stats.sg_skbs_rx++;
4964                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4965         }
4966         return skb;
4967 no_mem:
4968         if (net_ratelimit()) {
4969                 QETH_CARD_TEXT(card, 2, "noskbmem");
4970         }
4971         card->stats.rx_dropped++;
4972         return NULL;
4973 }
4974 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4975
4976 static void qeth_unregister_dbf_views(void)
4977 {
4978         int x;
4979         for (x = 0; x < QETH_DBF_INFOS; x++) {
4980                 debug_unregister(qeth_dbf[x].id);
4981                 qeth_dbf[x].id = NULL;
4982         }
4983 }
4984
4985 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4986 {
4987         char dbf_txt_buf[32];
4988         va_list args;
4989
4990         if (level > id->level)
4991                 return;
4992         va_start(args, fmt);
4993         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4994         va_end(args);
4995         debug_text_event(id, level, dbf_txt_buf);
4996 }
4997 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4998
4999 static int qeth_register_dbf_views(void)
5000 {
5001         int ret;
5002         int x;
5003
5004         for (x = 0; x < QETH_DBF_INFOS; x++) {
5005                 /* register the areas */
5006                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5007                                                 qeth_dbf[x].pages,
5008                                                 qeth_dbf[x].areas,
5009                                                 qeth_dbf[x].len);
5010                 if (qeth_dbf[x].id == NULL) {
5011                         qeth_unregister_dbf_views();
5012                         return -ENOMEM;
5013                 }
5014
5015                 /* register a view */
5016                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5017                 if (ret) {
5018                         qeth_unregister_dbf_views();
5019                         return ret;
5020                 }
5021
5022                 /* set a passing level */
5023                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5024         }
5025
5026         return 0;
5027 }
5028
5029 int qeth_core_load_discipline(struct qeth_card *card,
5030                 enum qeth_discipline_id discipline)
5031 {
5032         int rc = 0;
5033         mutex_lock(&qeth_mod_mutex);
5034         switch (discipline) {
5035         case QETH_DISCIPLINE_LAYER3:
5036                 card->discipline = try_then_request_module(
5037                         symbol_get(qeth_l3_discipline), "qeth_l3");
5038                 break;
5039         case QETH_DISCIPLINE_LAYER2:
5040                 card->discipline = try_then_request_module(
5041                         symbol_get(qeth_l2_discipline), "qeth_l2");
5042                 break;
5043         }
5044         if (!card->discipline) {
5045                 dev_err(&card->gdev->dev, "There is no kernel module to "
5046                         "support discipline %d\n", discipline);
5047                 rc = -EINVAL;
5048         }
5049         mutex_unlock(&qeth_mod_mutex);
5050         return rc;
5051 }
5052
5053 void qeth_core_free_discipline(struct qeth_card *card)
5054 {
5055         if (card->options.layer2)
5056                 symbol_put(qeth_l2_discipline);
5057         else
5058                 symbol_put(qeth_l3_discipline);
5059         card->discipline = NULL;
5060 }
5061
5062 static const struct device_type qeth_generic_devtype = {
5063         .name = "qeth_generic",
5064         .groups = qeth_generic_attr_groups,
5065 };
5066 static const struct device_type qeth_osn_devtype = {
5067         .name = "qeth_osn",
5068         .groups = qeth_osn_attr_groups,
5069 };
5070
5071 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5072 {
5073         struct qeth_card *card;
5074         struct device *dev;
5075         int rc;
5076         unsigned long flags;
5077         char dbf_name[20];
5078
5079         QETH_DBF_TEXT(SETUP, 2, "probedev");
5080
5081         dev = &gdev->dev;
5082         if (!get_device(dev))
5083                 return -ENODEV;
5084
5085         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5086
5087         card = qeth_alloc_card();
5088         if (!card) {
5089                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5090                 rc = -ENOMEM;
5091                 goto err_dev;
5092         }
5093
5094         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5095                 dev_name(&gdev->dev));
5096         card->debug = debug_register(dbf_name, 2, 1, 8);
5097         if (!card->debug) {
5098                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5099                 rc = -ENOMEM;
5100                 goto err_card;
5101         }
5102         debug_register_view(card->debug, &debug_hex_ascii_view);
5103
5104         card->read.ccwdev  = gdev->cdev[0];
5105         card->write.ccwdev = gdev->cdev[1];
5106         card->data.ccwdev  = gdev->cdev[2];
5107         dev_set_drvdata(&gdev->dev, card);
5108         card->gdev = gdev;
5109         gdev->cdev[0]->handler = qeth_irq;
5110         gdev->cdev[1]->handler = qeth_irq;
5111         gdev->cdev[2]->handler = qeth_irq;
5112
5113         rc = qeth_determine_card_type(card);
5114         if (rc) {
5115                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5116                 goto err_dbf;
5117         }
5118         rc = qeth_setup_card(card);
5119         if (rc) {
5120                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5121                 goto err_dbf;
5122         }
5123
5124         if (card->info.type == QETH_CARD_TYPE_OSN)
5125                 gdev->dev.type = &qeth_osn_devtype;
5126         else
5127                 gdev->dev.type = &qeth_generic_devtype;
5128
5129         switch (card->info.type) {
5130         case QETH_CARD_TYPE_OSN:
5131         case QETH_CARD_TYPE_OSM:
5132                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5133                 if (rc)
5134                         goto err_dbf;
5135                 rc = card->discipline->setup(card->gdev);
5136                 if (rc)
5137                         goto err_disc;
5138         case QETH_CARD_TYPE_OSD:
5139         case QETH_CARD_TYPE_OSX:
5140         default:
5141                 break;
5142         }
5143
5144         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5145         list_add_tail(&card->list, &qeth_core_card_list.list);
5146         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5147
5148         qeth_determine_capabilities(card);
5149         return 0;
5150
5151 err_disc:
5152         qeth_core_free_discipline(card);
5153 err_dbf:
5154         debug_unregister(card->debug);
5155 err_card:
5156         qeth_core_free_card(card);
5157 err_dev:
5158         put_device(dev);
5159         return rc;
5160 }
5161
5162 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5163 {
5164         unsigned long flags;
5165         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5166
5167         QETH_DBF_TEXT(SETUP, 2, "removedv");
5168
5169         if (card->discipline) {
5170                 card->discipline->remove(gdev);
5171                 qeth_core_free_discipline(card);
5172         }
5173
5174         debug_unregister(card->debug);
5175         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5176         list_del(&card->list);
5177         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5178         qeth_core_free_card(card);
5179         dev_set_drvdata(&gdev->dev, NULL);
5180         put_device(&gdev->dev);
5181         return;
5182 }
5183
5184 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5185 {
5186         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5187         int rc = 0;
5188         int def_discipline;
5189
5190         if (!card->discipline) {
5191                 if (card->info.type == QETH_CARD_TYPE_IQD)
5192                         def_discipline = QETH_DISCIPLINE_LAYER3;
5193                 else
5194                         def_discipline = QETH_DISCIPLINE_LAYER2;
5195                 rc = qeth_core_load_discipline(card, def_discipline);
5196                 if (rc)
5197                         goto err;
5198                 rc = card->discipline->setup(card->gdev);
5199                 if (rc)
5200                         goto err;
5201         }
5202         rc = card->discipline->set_online(gdev);
5203 err:
5204         return rc;
5205 }
5206
5207 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5208 {
5209         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5210         return card->discipline->set_offline(gdev);
5211 }
5212
5213 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5214 {
5215         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5216         if (card->discipline && card->discipline->shutdown)
5217                 card->discipline->shutdown(gdev);
5218 }
5219
5220 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5221 {
5222         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5223         if (card->discipline && card->discipline->prepare)
5224                 return card->discipline->prepare(gdev);
5225         return 0;
5226 }
5227
5228 static void qeth_core_complete(struct ccwgroup_device *gdev)
5229 {
5230         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5231         if (card->discipline && card->discipline->complete)
5232                 card->discipline->complete(gdev);
5233 }
5234
5235 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5236 {
5237         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5238         if (card->discipline && card->discipline->freeze)
5239                 return card->discipline->freeze(gdev);
5240         return 0;
5241 }
5242
5243 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5244 {
5245         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5246         if (card->discipline && card->discipline->thaw)
5247                 return card->discipline->thaw(gdev);
5248         return 0;
5249 }
5250
5251 static int qeth_core_restore(struct ccwgroup_device *gdev)
5252 {
5253         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5254         if (card->discipline && card->discipline->restore)
5255                 return card->discipline->restore(gdev);
5256         return 0;
5257 }
5258
5259 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5260         .driver = {
5261                 .owner = THIS_MODULE,
5262                 .name = "qeth",
5263         },
5264         .setup = qeth_core_probe_device,
5265         .remove = qeth_core_remove_device,
5266         .set_online = qeth_core_set_online,
5267         .set_offline = qeth_core_set_offline,
5268         .shutdown = qeth_core_shutdown,
5269         .prepare = qeth_core_prepare,
5270         .complete = qeth_core_complete,
5271         .freeze = qeth_core_freeze,
5272         .thaw = qeth_core_thaw,
5273         .restore = qeth_core_restore,
5274 };
5275
5276 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5277                                             const char *buf, size_t count)
5278 {
5279         int err;
5280
5281         err = ccwgroup_create_dev(qeth_core_root_dev,
5282                                   &qeth_core_ccwgroup_driver, 3, buf);
5283
5284         return err ? err : count;
5285 }
5286 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5287
5288 static struct attribute *qeth_drv_attrs[] = {
5289         &driver_attr_group.attr,
5290         NULL,
5291 };
5292 static struct attribute_group qeth_drv_attr_group = {
5293         .attrs = qeth_drv_attrs,
5294 };
5295 static const struct attribute_group *qeth_drv_attr_groups[] = {
5296         &qeth_drv_attr_group,
5297         NULL,
5298 };
5299
5300 static struct {
5301         const char str[ETH_GSTRING_LEN];
5302 } qeth_ethtool_stats_keys[] = {
5303 /*  0 */{"rx skbs"},
5304         {"rx buffers"},
5305         {"tx skbs"},
5306         {"tx buffers"},
5307         {"tx skbs no packing"},
5308         {"tx buffers no packing"},
5309         {"tx skbs packing"},
5310         {"tx buffers packing"},
5311         {"tx sg skbs"},
5312         {"tx sg frags"},
5313 /* 10 */{"rx sg skbs"},
5314         {"rx sg frags"},
5315         {"rx sg page allocs"},
5316         {"tx large kbytes"},
5317         {"tx large count"},
5318         {"tx pk state ch n->p"},
5319         {"tx pk state ch p->n"},
5320         {"tx pk watermark low"},
5321         {"tx pk watermark high"},
5322         {"queue 0 buffer usage"},
5323 /* 20 */{"queue 1 buffer usage"},
5324         {"queue 2 buffer usage"},
5325         {"queue 3 buffer usage"},
5326         {"rx poll time"},
5327         {"rx poll count"},
5328         {"rx do_QDIO time"},
5329         {"rx do_QDIO count"},
5330         {"tx handler time"},
5331         {"tx handler count"},
5332         {"tx time"},
5333 /* 30 */{"tx count"},
5334         {"tx do_QDIO time"},
5335         {"tx do_QDIO count"},
5336         {"tx csum"},
5337         {"tx lin"},
5338         {"cq handler count"},
5339         {"cq handler time"}
5340 };
5341
5342 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5343 {
5344         switch (stringset) {
5345         case ETH_SS_STATS:
5346                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5347         default:
5348                 return -EINVAL;
5349         }
5350 }
5351 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5352
5353 void qeth_core_get_ethtool_stats(struct net_device *dev,
5354                 struct ethtool_stats *stats, u64 *data)
5355 {
5356         struct qeth_card *card = dev->ml_priv;
5357         data[0] = card->stats.rx_packets -
5358                                 card->perf_stats.initial_rx_packets;
5359         data[1] = card->perf_stats.bufs_rec;
5360         data[2] = card->stats.tx_packets -
5361                                 card->perf_stats.initial_tx_packets;
5362         data[3] = card->perf_stats.bufs_sent;
5363         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5364                         - card->perf_stats.skbs_sent_pack;
5365         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5366         data[6] = card->perf_stats.skbs_sent_pack;
5367         data[7] = card->perf_stats.bufs_sent_pack;
5368         data[8] = card->perf_stats.sg_skbs_sent;
5369         data[9] = card->perf_stats.sg_frags_sent;
5370         data[10] = card->perf_stats.sg_skbs_rx;
5371         data[11] = card->perf_stats.sg_frags_rx;
5372         data[12] = card->perf_stats.sg_alloc_page_rx;
5373         data[13] = (card->perf_stats.large_send_bytes >> 10);
5374         data[14] = card->perf_stats.large_send_cnt;
5375         data[15] = card->perf_stats.sc_dp_p;
5376         data[16] = card->perf_stats.sc_p_dp;
5377         data[17] = QETH_LOW_WATERMARK_PACK;
5378         data[18] = QETH_HIGH_WATERMARK_PACK;
5379         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5380         data[20] = (card->qdio.no_out_queues > 1) ?
5381                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5382         data[21] = (card->qdio.no_out_queues > 2) ?
5383                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5384         data[22] = (card->qdio.no_out_queues > 3) ?
5385                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5386         data[23] = card->perf_stats.inbound_time;
5387         data[24] = card->perf_stats.inbound_cnt;
5388         data[25] = card->perf_stats.inbound_do_qdio_time;
5389         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5390         data[27] = card->perf_stats.outbound_handler_time;
5391         data[28] = card->perf_stats.outbound_handler_cnt;
5392         data[29] = card->perf_stats.outbound_time;
5393         data[30] = card->perf_stats.outbound_cnt;
5394         data[31] = card->perf_stats.outbound_do_qdio_time;
5395         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5396         data[33] = card->perf_stats.tx_csum;
5397         data[34] = card->perf_stats.tx_lin;
5398         data[35] = card->perf_stats.cq_cnt;
5399         data[36] = card->perf_stats.cq_time;
5400 }
5401 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5402
5403 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5404 {
5405         switch (stringset) {
5406         case ETH_SS_STATS:
5407                 memcpy(data, &qeth_ethtool_stats_keys,
5408                         sizeof(qeth_ethtool_stats_keys));
5409                 break;
5410         default:
5411                 WARN_ON(1);
5412                 break;
5413         }
5414 }
5415 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5416
5417 void qeth_core_get_drvinfo(struct net_device *dev,
5418                 struct ethtool_drvinfo *info)
5419 {
5420         struct qeth_card *card = dev->ml_priv;
5421         if (card->options.layer2)
5422                 strcpy(info->driver, "qeth_l2");
5423         else
5424                 strcpy(info->driver, "qeth_l3");
5425
5426         strcpy(info->version, "1.0");
5427         strcpy(info->fw_version, card->info.mcl_level);
5428         sprintf(info->bus_info, "%s/%s/%s",
5429                         CARD_RDEV_ID(card),
5430                         CARD_WDEV_ID(card),
5431                         CARD_DDEV_ID(card));
5432 }
5433 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5434
5435 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5436                                         struct ethtool_cmd *ecmd)
5437 {
5438         struct qeth_card *card = netdev->ml_priv;
5439         enum qeth_link_types link_type;
5440
5441         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5442                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5443         else
5444                 link_type = card->info.link_type;
5445
5446         ecmd->transceiver = XCVR_INTERNAL;
5447         ecmd->supported = SUPPORTED_Autoneg;
5448         ecmd->advertising = ADVERTISED_Autoneg;
5449         ecmd->duplex = DUPLEX_FULL;
5450         ecmd->autoneg = AUTONEG_ENABLE;
5451
5452         switch (link_type) {
5453         case QETH_LINK_TYPE_FAST_ETH:
5454         case QETH_LINK_TYPE_LANE_ETH100:
5455                 ecmd->supported |= SUPPORTED_10baseT_Half |
5456                                         SUPPORTED_10baseT_Full |
5457                                         SUPPORTED_100baseT_Half |
5458                                         SUPPORTED_100baseT_Full |
5459                                         SUPPORTED_TP;
5460                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5461                                         ADVERTISED_10baseT_Full |
5462                                         ADVERTISED_100baseT_Half |
5463                                         ADVERTISED_100baseT_Full |
5464                                         ADVERTISED_TP;
5465                 ecmd->speed = SPEED_100;
5466                 ecmd->port = PORT_TP;
5467                 break;
5468
5469         case QETH_LINK_TYPE_GBIT_ETH:
5470         case QETH_LINK_TYPE_LANE_ETH1000:
5471                 ecmd->supported |= SUPPORTED_10baseT_Half |
5472                                         SUPPORTED_10baseT_Full |
5473                                         SUPPORTED_100baseT_Half |
5474                                         SUPPORTED_100baseT_Full |
5475                                         SUPPORTED_1000baseT_Half |
5476                                         SUPPORTED_1000baseT_Full |
5477                                         SUPPORTED_FIBRE;
5478                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5479                                         ADVERTISED_10baseT_Full |
5480                                         ADVERTISED_100baseT_Half |
5481                                         ADVERTISED_100baseT_Full |
5482                                         ADVERTISED_1000baseT_Half |
5483                                         ADVERTISED_1000baseT_Full |
5484                                         ADVERTISED_FIBRE;
5485                 ecmd->speed = SPEED_1000;
5486                 ecmd->port = PORT_FIBRE;
5487                 break;
5488
5489         case QETH_LINK_TYPE_10GBIT_ETH:
5490                 ecmd->supported |= SUPPORTED_10baseT_Half |
5491                                         SUPPORTED_10baseT_Full |
5492                                         SUPPORTED_100baseT_Half |
5493                                         SUPPORTED_100baseT_Full |
5494                                         SUPPORTED_1000baseT_Half |
5495                                         SUPPORTED_1000baseT_Full |
5496                                         SUPPORTED_10000baseT_Full |
5497                                         SUPPORTED_FIBRE;
5498                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5499                                         ADVERTISED_10baseT_Full |
5500                                         ADVERTISED_100baseT_Half |
5501                                         ADVERTISED_100baseT_Full |
5502                                         ADVERTISED_1000baseT_Half |
5503                                         ADVERTISED_1000baseT_Full |
5504                                         ADVERTISED_10000baseT_Full |
5505                                         ADVERTISED_FIBRE;
5506                 ecmd->speed = SPEED_10000;
5507                 ecmd->port = PORT_FIBRE;
5508                 break;
5509
5510         default:
5511                 ecmd->supported |= SUPPORTED_10baseT_Half |
5512                                         SUPPORTED_10baseT_Full |
5513                                         SUPPORTED_TP;
5514                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5515                                         ADVERTISED_10baseT_Full |
5516                                         ADVERTISED_TP;
5517                 ecmd->speed = SPEED_10;
5518                 ecmd->port = PORT_TP;
5519         }
5520
5521         return 0;
5522 }
5523 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5524
5525 static int __init qeth_core_init(void)
5526 {
5527         int rc;
5528
5529         pr_info("loading core functions\n");
5530         INIT_LIST_HEAD(&qeth_core_card_list.list);
5531         rwlock_init(&qeth_core_card_list.rwlock);
5532         mutex_init(&qeth_mod_mutex);
5533
5534         rc = qeth_register_dbf_views();
5535         if (rc)
5536                 goto out_err;
5537         qeth_core_root_dev = root_device_register("qeth");
5538         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5539         if (rc)
5540                 goto register_err;
5541         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5542                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5543         if (!qeth_core_header_cache) {
5544                 rc = -ENOMEM;
5545                 goto slab_err;
5546         }
5547         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5548                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5549         if (!qeth_qdio_outbuf_cache) {
5550                 rc = -ENOMEM;
5551                 goto cqslab_err;
5552         }
5553         rc = ccw_driver_register(&qeth_ccw_driver);
5554         if (rc)
5555                 goto ccw_err;
5556         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5557         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5558         if (rc)
5559                 goto ccwgroup_err;
5560
5561         return 0;
5562
5563 ccwgroup_err:
5564         ccw_driver_unregister(&qeth_ccw_driver);
5565 ccw_err:
5566         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5567 cqslab_err:
5568         kmem_cache_destroy(qeth_core_header_cache);
5569 slab_err:
5570         root_device_unregister(qeth_core_root_dev);
5571 register_err:
5572         qeth_unregister_dbf_views();
5573 out_err:
5574         pr_err("Initializing the qeth device driver failed\n");
5575         return rc;
5576 }
5577
5578 static void __exit qeth_core_exit(void)
5579 {
5580         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5581         ccw_driver_unregister(&qeth_ccw_driver);
5582         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5583         kmem_cache_destroy(qeth_core_header_cache);
5584         root_device_unregister(qeth_core_root_dev);
5585         qeth_unregister_dbf_views();
5586         pr_info("core functions removed\n");
5587 }
5588
5589 module_init(qeth_core_init);
5590 module_exit(qeth_core_exit);
5591 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5592 MODULE_DESCRIPTION("qeth core functions");
5593 MODULE_LICENSE("GPL");