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.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1333         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1334         card->options.fake_broadcast = 0;
1335         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1336         card->options.performance_stats = 0;
1337         card->options.rx_sg_cb = QETH_RX_SG_CB;
1338         card->options.isolation = ISOLATION_MODE_NONE;
1339         card->options.cq = QETH_CQ_DISABLED;
1340 }
1341
1342 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1343 {
1344         unsigned long flags;
1345         int rc = 0;
1346
1347         spin_lock_irqsave(&card->thread_mask_lock, flags);
1348         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1349                         (u8) card->thread_start_mask,
1350                         (u8) card->thread_allowed_mask,
1351                         (u8) card->thread_running_mask);
1352         rc = (card->thread_start_mask & thread);
1353         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1354         return rc;
1355 }
1356
1357 static void qeth_start_kernel_thread(struct work_struct *work)
1358 {
1359         struct task_struct *ts;
1360         struct qeth_card *card = container_of(work, struct qeth_card,
1361                                         kernel_thread_starter);
1362         QETH_CARD_TEXT(card , 2, "strthrd");
1363
1364         if (card->read.state != CH_STATE_UP &&
1365             card->write.state != CH_STATE_UP)
1366                 return;
1367         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1368                 ts = kthread_run(card->discipline.recover, (void *)card,
1369                                 "qeth_recover");
1370                 if (IS_ERR(ts)) {
1371                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1372                         qeth_clear_thread_running_bit(card,
1373                                 QETH_RECOVER_THREAD);
1374                 }
1375         }
1376 }
1377
1378 static int qeth_setup_card(struct qeth_card *card)
1379 {
1380
1381         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1382         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1383
1384         card->read.state  = CH_STATE_DOWN;
1385         card->write.state = CH_STATE_DOWN;
1386         card->data.state  = CH_STATE_DOWN;
1387         card->state = CARD_STATE_DOWN;
1388         card->lan_online = 0;
1389         card->read_or_write_problem = 0;
1390         card->dev = NULL;
1391         spin_lock_init(&card->vlanlock);
1392         spin_lock_init(&card->mclock);
1393         spin_lock_init(&card->lock);
1394         spin_lock_init(&card->ip_lock);
1395         spin_lock_init(&card->thread_mask_lock);
1396         mutex_init(&card->conf_mutex);
1397         mutex_init(&card->discipline_mutex);
1398         card->thread_start_mask = 0;
1399         card->thread_allowed_mask = 0;
1400         card->thread_running_mask = 0;
1401         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1402         INIT_LIST_HEAD(&card->ip_list);
1403         INIT_LIST_HEAD(card->ip_tbd_list);
1404         INIT_LIST_HEAD(&card->cmd_waiter_list);
1405         init_waitqueue_head(&card->wait_q);
1406         /* initial options */
1407         qeth_set_intial_options(card);
1408         /* IP address takeover */
1409         INIT_LIST_HEAD(&card->ipato.entries);
1410         card->ipato.enabled = 0;
1411         card->ipato.invert4 = 0;
1412         card->ipato.invert6 = 0;
1413         /* init QDIO stuff */
1414         qeth_init_qdio_info(card);
1415         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1416         return 0;
1417 }
1418
1419 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1420 {
1421         struct qeth_card *card = container_of(slr, struct qeth_card,
1422                                         qeth_service_level);
1423         if (card->info.mcl_level[0])
1424                 seq_printf(m, "qeth: %s firmware level %s\n",
1425                         CARD_BUS_ID(card), card->info.mcl_level);
1426 }
1427
1428 static struct qeth_card *qeth_alloc_card(void)
1429 {
1430         struct qeth_card *card;
1431
1432         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1433         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1434         if (!card)
1435                 goto out;
1436         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1437         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1438         if (!card->ip_tbd_list) {
1439                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1440                 goto out_card;
1441         }
1442         if (qeth_setup_channel(&card->read))
1443                 goto out_ip;
1444         if (qeth_setup_channel(&card->write))
1445                 goto out_channel;
1446         card->options.layer2 = -1;
1447         card->qeth_service_level.seq_print = qeth_core_sl_print;
1448         register_service_level(&card->qeth_service_level);
1449         return card;
1450
1451 out_channel:
1452         qeth_clean_channel(&card->read);
1453 out_ip:
1454         kfree(card->ip_tbd_list);
1455 out_card:
1456         kfree(card);
1457 out:
1458         return NULL;
1459 }
1460
1461 static int qeth_determine_card_type(struct qeth_card *card)
1462 {
1463         int i = 0;
1464
1465         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1466
1467         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1468         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1469         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1470                 if ((CARD_RDEV(card)->id.dev_type ==
1471                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1472                     (CARD_RDEV(card)->id.dev_model ==
1473                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1474                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1475                         card->qdio.no_out_queues =
1476                                 known_devices[i][QETH_QUEUE_NO_IND];
1477                         card->qdio.no_in_queues = 1;
1478                         card->info.is_multicast_different =
1479                                 known_devices[i][QETH_MULTICAST_IND];
1480                         qeth_get_channel_path_desc(card);
1481                         return 0;
1482                 }
1483                 i++;
1484         }
1485         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1486         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1487                 "unknown type\n");
1488         return -ENOENT;
1489 }
1490
1491 static int qeth_clear_channel(struct qeth_channel *channel)
1492 {
1493         unsigned long flags;
1494         struct qeth_card *card;
1495         int rc;
1496
1497         card = CARD_FROM_CDEV(channel->ccwdev);
1498         QETH_CARD_TEXT(card, 3, "clearch");
1499         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1500         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1501         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1502
1503         if (rc)
1504                 return rc;
1505         rc = wait_event_interruptible_timeout(card->wait_q,
1506                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1507         if (rc == -ERESTARTSYS)
1508                 return rc;
1509         if (channel->state != CH_STATE_STOPPED)
1510                 return -ETIME;
1511         channel->state = CH_STATE_DOWN;
1512         return 0;
1513 }
1514
1515 static int qeth_halt_channel(struct qeth_channel *channel)
1516 {
1517         unsigned long flags;
1518         struct qeth_card *card;
1519         int rc;
1520
1521         card = CARD_FROM_CDEV(channel->ccwdev);
1522         QETH_CARD_TEXT(card, 3, "haltch");
1523         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1524         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1525         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1526
1527         if (rc)
1528                 return rc;
1529         rc = wait_event_interruptible_timeout(card->wait_q,
1530                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1531         if (rc == -ERESTARTSYS)
1532                 return rc;
1533         if (channel->state != CH_STATE_HALTED)
1534                 return -ETIME;
1535         return 0;
1536 }
1537
1538 static int qeth_halt_channels(struct qeth_card *card)
1539 {
1540         int rc1 = 0, rc2 = 0, rc3 = 0;
1541
1542         QETH_CARD_TEXT(card, 3, "haltchs");
1543         rc1 = qeth_halt_channel(&card->read);
1544         rc2 = qeth_halt_channel(&card->write);
1545         rc3 = qeth_halt_channel(&card->data);
1546         if (rc1)
1547                 return rc1;
1548         if (rc2)
1549                 return rc2;
1550         return rc3;
1551 }
1552
1553 static int qeth_clear_channels(struct qeth_card *card)
1554 {
1555         int rc1 = 0, rc2 = 0, rc3 = 0;
1556
1557         QETH_CARD_TEXT(card, 3, "clearchs");
1558         rc1 = qeth_clear_channel(&card->read);
1559         rc2 = qeth_clear_channel(&card->write);
1560         rc3 = qeth_clear_channel(&card->data);
1561         if (rc1)
1562                 return rc1;
1563         if (rc2)
1564                 return rc2;
1565         return rc3;
1566 }
1567
1568 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1569 {
1570         int rc = 0;
1571
1572         QETH_CARD_TEXT(card, 3, "clhacrd");
1573
1574         if (halt)
1575                 rc = qeth_halt_channels(card);
1576         if (rc)
1577                 return rc;
1578         return qeth_clear_channels(card);
1579 }
1580
1581 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1582 {
1583         int rc = 0;
1584
1585         QETH_CARD_TEXT(card, 3, "qdioclr");
1586         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1587                 QETH_QDIO_CLEANING)) {
1588         case QETH_QDIO_ESTABLISHED:
1589                 if (card->info.type == QETH_CARD_TYPE_IQD)
1590                         rc = qdio_shutdown(CARD_DDEV(card),
1591                                 QDIO_FLAG_CLEANUP_USING_HALT);
1592                 else
1593                         rc = qdio_shutdown(CARD_DDEV(card),
1594                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1595                 if (rc)
1596                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1597                 qdio_free(CARD_DDEV(card));
1598                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1599                 break;
1600         case QETH_QDIO_CLEANING:
1601                 return rc;
1602         default:
1603                 break;
1604         }
1605         rc = qeth_clear_halt_card(card, use_halt);
1606         if (rc)
1607                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1608         card->state = CARD_STATE_DOWN;
1609         return rc;
1610 }
1611 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1612
1613 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1614                                int *length)
1615 {
1616         struct ciw *ciw;
1617         char *rcd_buf;
1618         int ret;
1619         struct qeth_channel *channel = &card->data;
1620         unsigned long flags;
1621
1622         /*
1623          * scan for RCD command in extended SenseID data
1624          */
1625         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1626         if (!ciw || ciw->cmd == 0)
1627                 return -EOPNOTSUPP;
1628         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1629         if (!rcd_buf)
1630                 return -ENOMEM;
1631
1632         channel->ccw.cmd_code = ciw->cmd;
1633         channel->ccw.cda = (__u32) __pa(rcd_buf);
1634         channel->ccw.count = ciw->count;
1635         channel->ccw.flags = CCW_FLAG_SLI;
1636         channel->state = CH_STATE_RCD;
1637         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1638         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1639                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1640                                        QETH_RCD_TIMEOUT);
1641         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1642         if (!ret)
1643                 wait_event(card->wait_q,
1644                            (channel->state == CH_STATE_RCD_DONE ||
1645                             channel->state == CH_STATE_DOWN));
1646         if (channel->state == CH_STATE_DOWN)
1647                 ret = -EIO;
1648         else
1649                 channel->state = CH_STATE_DOWN;
1650         if (ret) {
1651                 kfree(rcd_buf);
1652                 *buffer = NULL;
1653                 *length = 0;
1654         } else {
1655                 *length = ciw->count;
1656                 *buffer = rcd_buf;
1657         }
1658         return ret;
1659 }
1660
1661 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1662 {
1663         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1664         card->info.chpid = prcd[30];
1665         card->info.unit_addr2 = prcd[31];
1666         card->info.cula = prcd[63];
1667         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1668                                (prcd[0x11] == _ascebc['M']));
1669 }
1670
1671 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1672 {
1673         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1674
1675         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1676             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1677                 card->info.blkt.time_total = 250;
1678                 card->info.blkt.inter_packet = 5;
1679                 card->info.blkt.inter_packet_jumbo = 15;
1680         } else {
1681                 card->info.blkt.time_total = 0;
1682                 card->info.blkt.inter_packet = 0;
1683                 card->info.blkt.inter_packet_jumbo = 0;
1684         }
1685 }
1686
1687 static void qeth_init_tokens(struct qeth_card *card)
1688 {
1689         card->token.issuer_rm_w = 0x00010103UL;
1690         card->token.cm_filter_w = 0x00010108UL;
1691         card->token.cm_connection_w = 0x0001010aUL;
1692         card->token.ulp_filter_w = 0x0001010bUL;
1693         card->token.ulp_connection_w = 0x0001010dUL;
1694 }
1695
1696 static void qeth_init_func_level(struct qeth_card *card)
1697 {
1698         switch (card->info.type) {
1699         case QETH_CARD_TYPE_IQD:
1700                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1701                 break;
1702         case QETH_CARD_TYPE_OSD:
1703         case QETH_CARD_TYPE_OSN:
1704                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1705                 break;
1706         default:
1707                 break;
1708         }
1709 }
1710
1711 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1712                 void (*idx_reply_cb)(struct qeth_channel *,
1713                         struct qeth_cmd_buffer *))
1714 {
1715         struct qeth_cmd_buffer *iob;
1716         unsigned long flags;
1717         int rc;
1718         struct qeth_card *card;
1719
1720         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1721         card = CARD_FROM_CDEV(channel->ccwdev);
1722         iob = qeth_get_buffer(channel);
1723         iob->callback = idx_reply_cb;
1724         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1725         channel->ccw.count = QETH_BUFSIZE;
1726         channel->ccw.cda = (__u32) __pa(iob->data);
1727
1728         wait_event(card->wait_q,
1729                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1730         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1731         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1732         rc = ccw_device_start(channel->ccwdev,
1733                               &channel->ccw, (addr_t) iob, 0, 0);
1734         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1735
1736         if (rc) {
1737                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1738                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1739                 atomic_set(&channel->irq_pending, 0);
1740                 wake_up(&card->wait_q);
1741                 return rc;
1742         }
1743         rc = wait_event_interruptible_timeout(card->wait_q,
1744                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1745         if (rc == -ERESTARTSYS)
1746                 return rc;
1747         if (channel->state != CH_STATE_UP) {
1748                 rc = -ETIME;
1749                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1750                 qeth_clear_cmd_buffers(channel);
1751         } else
1752                 rc = 0;
1753         return rc;
1754 }
1755
1756 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1757                 void (*idx_reply_cb)(struct qeth_channel *,
1758                         struct qeth_cmd_buffer *))
1759 {
1760         struct qeth_card *card;
1761         struct qeth_cmd_buffer *iob;
1762         unsigned long flags;
1763         __u16 temp;
1764         __u8 tmp;
1765         int rc;
1766         struct ccw_dev_id temp_devid;
1767
1768         card = CARD_FROM_CDEV(channel->ccwdev);
1769
1770         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1771
1772         iob = qeth_get_buffer(channel);
1773         iob->callback = idx_reply_cb;
1774         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1775         channel->ccw.count = IDX_ACTIVATE_SIZE;
1776         channel->ccw.cda = (__u32) __pa(iob->data);
1777         if (channel == &card->write) {
1778                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1779                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1780                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1781                 card->seqno.trans_hdr++;
1782         } else {
1783                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1784                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1785                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1786         }
1787         tmp = ((__u8)card->info.portno) | 0x80;
1788         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1789         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1790                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1791         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1792                &card->info.func_level, sizeof(__u16));
1793         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1794         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1795         temp = (card->info.cula << 8) + card->info.unit_addr2;
1796         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1797
1798         wait_event(card->wait_q,
1799                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1800         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1801         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1802         rc = ccw_device_start(channel->ccwdev,
1803                               &channel->ccw, (addr_t) iob, 0, 0);
1804         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1805
1806         if (rc) {
1807                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1808                         rc);
1809                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1810                 atomic_set(&channel->irq_pending, 0);
1811                 wake_up(&card->wait_q);
1812                 return rc;
1813         }
1814         rc = wait_event_interruptible_timeout(card->wait_q,
1815                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1816         if (rc == -ERESTARTSYS)
1817                 return rc;
1818         if (channel->state != CH_STATE_ACTIVATING) {
1819                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1820                         " failed to recover an error on the device\n");
1821                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1822                         dev_name(&channel->ccwdev->dev));
1823                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1824                 qeth_clear_cmd_buffers(channel);
1825                 return -ETIME;
1826         }
1827         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1828 }
1829
1830 static int qeth_peer_func_level(int level)
1831 {
1832         if ((level & 0xff) == 8)
1833                 return (level & 0xff) + 0x400;
1834         if (((level >> 8) & 3) == 1)
1835                 return (level & 0xff) + 0x200;
1836         return level;
1837 }
1838
1839 static void qeth_idx_write_cb(struct qeth_channel *channel,
1840                 struct qeth_cmd_buffer *iob)
1841 {
1842         struct qeth_card *card;
1843         __u16 temp;
1844
1845         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1846
1847         if (channel->state == CH_STATE_DOWN) {
1848                 channel->state = CH_STATE_ACTIVATING;
1849                 goto out;
1850         }
1851         card = CARD_FROM_CDEV(channel->ccwdev);
1852
1853         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1854                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1855                         dev_err(&card->write.ccwdev->dev,
1856                                 "The adapter is used exclusively by another "
1857                                 "host\n");
1858                 else
1859                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1860                                 " negative reply\n",
1861                                 dev_name(&card->write.ccwdev->dev));
1862                 goto out;
1863         }
1864         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1865         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1866                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1867                         "function level mismatch (sent: 0x%x, received: "
1868                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1869                         card->info.func_level, temp);
1870                 goto out;
1871         }
1872         channel->state = CH_STATE_UP;
1873 out:
1874         qeth_release_buffer(channel, iob);
1875 }
1876
1877 static void qeth_idx_read_cb(struct qeth_channel *channel,
1878                 struct qeth_cmd_buffer *iob)
1879 {
1880         struct qeth_card *card;
1881         __u16 temp;
1882
1883         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1884         if (channel->state == CH_STATE_DOWN) {
1885                 channel->state = CH_STATE_ACTIVATING;
1886                 goto out;
1887         }
1888
1889         card = CARD_FROM_CDEV(channel->ccwdev);
1890         if (qeth_check_idx_response(card, iob->data))
1891                         goto out;
1892
1893         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1894                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1895                 case QETH_IDX_ACT_ERR_EXCL:
1896                         dev_err(&card->write.ccwdev->dev,
1897                                 "The adapter is used exclusively by another "
1898                                 "host\n");
1899                         break;
1900                 case QETH_IDX_ACT_ERR_AUTH:
1901                 case QETH_IDX_ACT_ERR_AUTH_USER:
1902                         dev_err(&card->read.ccwdev->dev,
1903                                 "Setting the device online failed because of "
1904                                 "insufficient authorization\n");
1905                         break;
1906                 default:
1907                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1908                                 " negative reply\n",
1909                                 dev_name(&card->read.ccwdev->dev));
1910                 }
1911                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1912                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1913                 goto out;
1914         }
1915
1916 /**
1917  *  * temporary fix for microcode bug
1918  *   * to revert it,replace OR by AND
1919  *    */
1920         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1921              (card->info.type == QETH_CARD_TYPE_OSD))
1922                 card->info.portname_required = 1;
1923
1924         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1925         if (temp != qeth_peer_func_level(card->info.func_level)) {
1926                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1927                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1928                         dev_name(&card->read.ccwdev->dev),
1929                         card->info.func_level, temp);
1930                 goto out;
1931         }
1932         memcpy(&card->token.issuer_rm_r,
1933                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1934                QETH_MPC_TOKEN_LENGTH);
1935         memcpy(&card->info.mcl_level[0],
1936                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1937         channel->state = CH_STATE_UP;
1938 out:
1939         qeth_release_buffer(channel, iob);
1940 }
1941
1942 void qeth_prepare_control_data(struct qeth_card *card, int len,
1943                 struct qeth_cmd_buffer *iob)
1944 {
1945         qeth_setup_ccw(&card->write, iob->data, len);
1946         iob->callback = qeth_release_buffer;
1947
1948         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1949                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1950         card->seqno.trans_hdr++;
1951         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1952                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1953         card->seqno.pdu_hdr++;
1954         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1955                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1956         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1957 }
1958 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1959
1960 int qeth_send_control_data(struct qeth_card *card, int len,
1961                 struct qeth_cmd_buffer *iob,
1962                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1963                         unsigned long),
1964                 void *reply_param)
1965 {
1966         int rc;
1967         unsigned long flags;
1968         struct qeth_reply *reply = NULL;
1969         unsigned long timeout, event_timeout;
1970         struct qeth_ipa_cmd *cmd;
1971
1972         QETH_CARD_TEXT(card, 2, "sendctl");
1973
1974         if (card->read_or_write_problem) {
1975                 qeth_release_buffer(iob->channel, iob);
1976                 return -EIO;
1977         }
1978         reply = qeth_alloc_reply(card);
1979         if (!reply) {
1980                 return -ENOMEM;
1981         }
1982         reply->callback = reply_cb;
1983         reply->param = reply_param;
1984         if (card->state == CARD_STATE_DOWN)
1985                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1986         else
1987                 reply->seqno = card->seqno.ipa++;
1988         init_waitqueue_head(&reply->wait_q);
1989         spin_lock_irqsave(&card->lock, flags);
1990         list_add_tail(&reply->list, &card->cmd_waiter_list);
1991         spin_unlock_irqrestore(&card->lock, flags);
1992         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1993
1994         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1995         qeth_prepare_control_data(card, len, iob);
1996
1997         if (IS_IPA(iob->data))
1998                 event_timeout = QETH_IPA_TIMEOUT;
1999         else
2000                 event_timeout = QETH_TIMEOUT;
2001         timeout = jiffies + event_timeout;
2002
2003         QETH_CARD_TEXT(card, 6, "noirqpnd");
2004         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2005         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2006                               (addr_t) iob, 0, 0);
2007         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2008         if (rc) {
2009                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2010                         "ccw_device_start rc = %i\n",
2011                         dev_name(&card->write.ccwdev->dev), rc);
2012                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2013                 spin_lock_irqsave(&card->lock, flags);
2014                 list_del_init(&reply->list);
2015                 qeth_put_reply(reply);
2016                 spin_unlock_irqrestore(&card->lock, flags);
2017                 qeth_release_buffer(iob->channel, iob);
2018                 atomic_set(&card->write.irq_pending, 0);
2019                 wake_up(&card->wait_q);
2020                 return rc;
2021         }
2022
2023         /* we have only one long running ipassist, since we can ensure
2024            process context of this command we can sleep */
2025         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2026         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2027             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2028                 if (!wait_event_timeout(reply->wait_q,
2029                     atomic_read(&reply->received), event_timeout))
2030                         goto time_err;
2031         } else {
2032                 while (!atomic_read(&reply->received)) {
2033                         if (time_after(jiffies, timeout))
2034                                 goto time_err;
2035                         cpu_relax();
2036                 };
2037         }
2038
2039         if (reply->rc == -EIO)
2040                 goto error;
2041         rc = reply->rc;
2042         qeth_put_reply(reply);
2043         return rc;
2044
2045 time_err:
2046         reply->rc = -ETIME;
2047         spin_lock_irqsave(&reply->card->lock, flags);
2048         list_del_init(&reply->list);
2049         spin_unlock_irqrestore(&reply->card->lock, flags);
2050         atomic_inc(&reply->received);
2051 error:
2052         atomic_set(&card->write.irq_pending, 0);
2053         qeth_release_buffer(iob->channel, iob);
2054         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2055         rc = reply->rc;
2056         qeth_put_reply(reply);
2057         return rc;
2058 }
2059 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2060
2061 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2062                 unsigned long data)
2063 {
2064         struct qeth_cmd_buffer *iob;
2065
2066         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2067
2068         iob = (struct qeth_cmd_buffer *) data;
2069         memcpy(&card->token.cm_filter_r,
2070                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2071                QETH_MPC_TOKEN_LENGTH);
2072         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2073         return 0;
2074 }
2075
2076 static int qeth_cm_enable(struct qeth_card *card)
2077 {
2078         int rc;
2079         struct qeth_cmd_buffer *iob;
2080
2081         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2082
2083         iob = qeth_wait_for_buffer(&card->write);
2084         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2085         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2086                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2087         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2088                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2089
2090         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2091                                     qeth_cm_enable_cb, NULL);
2092         return rc;
2093 }
2094
2095 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2096                 unsigned long data)
2097 {
2098
2099         struct qeth_cmd_buffer *iob;
2100
2101         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2102
2103         iob = (struct qeth_cmd_buffer *) data;
2104         memcpy(&card->token.cm_connection_r,
2105                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2106                QETH_MPC_TOKEN_LENGTH);
2107         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2108         return 0;
2109 }
2110
2111 static int qeth_cm_setup(struct qeth_card *card)
2112 {
2113         int rc;
2114         struct qeth_cmd_buffer *iob;
2115
2116         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2117
2118         iob = qeth_wait_for_buffer(&card->write);
2119         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2120         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2121                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2122         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2123                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2124         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2125                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2126         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2127                                     qeth_cm_setup_cb, NULL);
2128         return rc;
2129
2130 }
2131
2132 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2133 {
2134         switch (card->info.type) {
2135         case QETH_CARD_TYPE_UNKNOWN:
2136                 return 1500;
2137         case QETH_CARD_TYPE_IQD:
2138                 return card->info.max_mtu;
2139         case QETH_CARD_TYPE_OSD:
2140                 switch (card->info.link_type) {
2141                 case QETH_LINK_TYPE_HSTR:
2142                 case QETH_LINK_TYPE_LANE_TR:
2143                         return 2000;
2144                 default:
2145                         return 1492;
2146                 }
2147         case QETH_CARD_TYPE_OSM:
2148         case QETH_CARD_TYPE_OSX:
2149                 return 1492;
2150         default:
2151                 return 1500;
2152         }
2153 }
2154
2155 static inline int qeth_get_mtu_outof_framesize(int framesize)
2156 {
2157         switch (framesize) {
2158         case 0x4000:
2159                 return 8192;
2160         case 0x6000:
2161                 return 16384;
2162         case 0xa000:
2163                 return 32768;
2164         case 0xffff:
2165                 return 57344;
2166         default:
2167                 return 0;
2168         }
2169 }
2170
2171 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2172 {
2173         switch (card->info.type) {
2174         case QETH_CARD_TYPE_OSD:
2175         case QETH_CARD_TYPE_OSM:
2176         case QETH_CARD_TYPE_OSX:
2177         case QETH_CARD_TYPE_IQD:
2178                 return ((mtu >= 576) &&
2179                         (mtu <= card->info.max_mtu));
2180         case QETH_CARD_TYPE_OSN:
2181         case QETH_CARD_TYPE_UNKNOWN:
2182         default:
2183                 return 1;
2184         }
2185 }
2186
2187 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2188                 unsigned long data)
2189 {
2190
2191         __u16 mtu, framesize;
2192         __u16 len;
2193         __u8 link_type;
2194         struct qeth_cmd_buffer *iob;
2195
2196         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2197
2198         iob = (struct qeth_cmd_buffer *) data;
2199         memcpy(&card->token.ulp_filter_r,
2200                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2201                QETH_MPC_TOKEN_LENGTH);
2202         if (card->info.type == QETH_CARD_TYPE_IQD) {
2203                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2204                 mtu = qeth_get_mtu_outof_framesize(framesize);
2205                 if (!mtu) {
2206                         iob->rc = -EINVAL;
2207                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2208                         return 0;
2209                 }
2210                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2211                         /* frame size has changed */
2212                         if (card->dev &&
2213                             ((card->dev->mtu == card->info.initial_mtu) ||
2214                              (card->dev->mtu > mtu)))
2215                                 card->dev->mtu = mtu;
2216                         qeth_free_qdio_buffers(card);
2217                 }
2218                 card->info.initial_mtu = mtu;
2219                 card->info.max_mtu = mtu;
2220                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2221         } else {
2222                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2223                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2224                         iob->data);
2225                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2226         }
2227
2228         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2229         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2230                 memcpy(&link_type,
2231                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2232                 card->info.link_type = link_type;
2233         } else
2234                 card->info.link_type = 0;
2235         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2236         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2237         return 0;
2238 }
2239
2240 static int qeth_ulp_enable(struct qeth_card *card)
2241 {
2242         int rc;
2243         char prot_type;
2244         struct qeth_cmd_buffer *iob;
2245
2246         /*FIXME: trace view callbacks*/
2247         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2248
2249         iob = qeth_wait_for_buffer(&card->write);
2250         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2251
2252         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2253                 (__u8) card->info.portno;
2254         if (card->options.layer2)
2255                 if (card->info.type == QETH_CARD_TYPE_OSN)
2256                         prot_type = QETH_PROT_OSN2;
2257                 else
2258                         prot_type = QETH_PROT_LAYER2;
2259         else
2260                 prot_type = QETH_PROT_TCPIP;
2261
2262         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2263         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2264                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2265         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2266                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2267         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2268                card->info.portname, 9);
2269         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2270                                     qeth_ulp_enable_cb, NULL);
2271         return rc;
2272
2273 }
2274
2275 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2276                 unsigned long data)
2277 {
2278         struct qeth_cmd_buffer *iob;
2279         int rc = 0;
2280
2281         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2282
2283         iob = (struct qeth_cmd_buffer *) data;
2284         memcpy(&card->token.ulp_connection_r,
2285                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2286                QETH_MPC_TOKEN_LENGTH);
2287         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2288                      3)) {
2289                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2290                 dev_err(&card->gdev->dev, "A connection could not be "
2291                         "established because of an OLM limit\n");
2292                 iob->rc = -EMLINK;
2293         }
2294         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2295         return rc;
2296 }
2297
2298 static int qeth_ulp_setup(struct qeth_card *card)
2299 {
2300         int rc;
2301         __u16 temp;
2302         struct qeth_cmd_buffer *iob;
2303         struct ccw_dev_id dev_id;
2304
2305         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2306
2307         iob = qeth_wait_for_buffer(&card->write);
2308         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2309
2310         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2311                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2312         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2313                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2314         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2315                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2316
2317         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2318         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2319         temp = (card->info.cula << 8) + card->info.unit_addr2;
2320         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2321         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2322                                     qeth_ulp_setup_cb, NULL);
2323         return rc;
2324 }
2325
2326 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2327 {
2328         int rc;
2329         struct qeth_qdio_out_buffer *newbuf;
2330
2331         rc = 0;
2332         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2333         if (!newbuf) {
2334                 rc = -ENOMEM;
2335                 goto out;
2336         }
2337         newbuf->buffer = &q->qdio_bufs[bidx];
2338         skb_queue_head_init(&newbuf->skb_list);
2339         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2340         newbuf->q = q;
2341         newbuf->aob = NULL;
2342         newbuf->next_pending = q->bufs[bidx];
2343         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2344         q->bufs[bidx] = newbuf;
2345         if (q->bufstates) {
2346                 q->bufstates[bidx].user = newbuf;
2347                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2348                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2349                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2350                                 (long) newbuf->next_pending);
2351         }
2352 out:
2353         return rc;
2354 }
2355
2356
2357 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2358 {
2359         int i, j;
2360
2361         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2362
2363         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2364                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2365                 return 0;
2366
2367         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2368                                    GFP_KERNEL);
2369         if (!card->qdio.in_q)
2370                 goto out_nomem;
2371         QETH_DBF_TEXT(SETUP, 2, "inq");
2372         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2373         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2374         /* give inbound qeth_qdio_buffers their qdio_buffers */
2375         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2376                 card->qdio.in_q->bufs[i].buffer =
2377                         &card->qdio.in_q->qdio_bufs[i];
2378                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2379         }
2380         /* inbound buffer pool */
2381         if (qeth_alloc_buffer_pool(card))
2382                 goto out_freeinq;
2383
2384         /* outbound */
2385         card->qdio.out_qs =
2386                 kzalloc(card->qdio.no_out_queues *
2387                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2388         if (!card->qdio.out_qs)
2389                 goto out_freepool;
2390         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2391                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2392                                                GFP_KERNEL);
2393                 if (!card->qdio.out_qs[i])
2394                         goto out_freeoutq;
2395                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2396                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2397                 card->qdio.out_qs[i]->queue_no = i;
2398                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2399                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2400                         BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2401                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2402                                 goto out_freeoutqbufs;
2403                 }
2404         }
2405
2406         /* completion */
2407         if (qeth_alloc_cq(card))
2408                 goto out_freeoutq;
2409
2410         return 0;
2411
2412 out_freeoutqbufs:
2413         while (j > 0) {
2414                 --j;
2415                 kmem_cache_free(qeth_qdio_outbuf_cache,
2416                                 card->qdio.out_qs[i]->bufs[j]);
2417                 card->qdio.out_qs[i]->bufs[j] = NULL;
2418         }
2419 out_freeoutq:
2420         while (i > 0) {
2421                 kfree(card->qdio.out_qs[--i]);
2422                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2423         }
2424         kfree(card->qdio.out_qs);
2425         card->qdio.out_qs = NULL;
2426 out_freepool:
2427         qeth_free_buffer_pool(card);
2428 out_freeinq:
2429         kfree(card->qdio.in_q);
2430         card->qdio.in_q = NULL;
2431 out_nomem:
2432         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2433         return -ENOMEM;
2434 }
2435
2436 static void qeth_create_qib_param_field(struct qeth_card *card,
2437                 char *param_field)
2438 {
2439
2440         param_field[0] = _ascebc['P'];
2441         param_field[1] = _ascebc['C'];
2442         param_field[2] = _ascebc['I'];
2443         param_field[3] = _ascebc['T'];
2444         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2445         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2446         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2447 }
2448
2449 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2450                 char *param_field)
2451 {
2452         param_field[16] = _ascebc['B'];
2453         param_field[17] = _ascebc['L'];
2454         param_field[18] = _ascebc['K'];
2455         param_field[19] = _ascebc['T'];
2456         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2457         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2458         *((unsigned int *) (&param_field[28])) =
2459                 card->info.blkt.inter_packet_jumbo;
2460 }
2461
2462 static int qeth_qdio_activate(struct qeth_card *card)
2463 {
2464         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2465         return qdio_activate(CARD_DDEV(card));
2466 }
2467
2468 static int qeth_dm_act(struct qeth_card *card)
2469 {
2470         int rc;
2471         struct qeth_cmd_buffer *iob;
2472
2473         QETH_DBF_TEXT(SETUP, 2, "dmact");
2474
2475         iob = qeth_wait_for_buffer(&card->write);
2476         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2477
2478         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2479                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2480         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2481                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2482         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2483         return rc;
2484 }
2485
2486 static int qeth_mpc_initialize(struct qeth_card *card)
2487 {
2488         int rc;
2489
2490         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2491
2492         rc = qeth_issue_next_read(card);
2493         if (rc) {
2494                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2495                 return rc;
2496         }
2497         rc = qeth_cm_enable(card);
2498         if (rc) {
2499                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2500                 goto out_qdio;
2501         }
2502         rc = qeth_cm_setup(card);
2503         if (rc) {
2504                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2505                 goto out_qdio;
2506         }
2507         rc = qeth_ulp_enable(card);
2508         if (rc) {
2509                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2510                 goto out_qdio;
2511         }
2512         rc = qeth_ulp_setup(card);
2513         if (rc) {
2514                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2515                 goto out_qdio;
2516         }
2517         rc = qeth_alloc_qdio_buffers(card);
2518         if (rc) {
2519                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2520                 goto out_qdio;
2521         }
2522         rc = qeth_qdio_establish(card);
2523         if (rc) {
2524                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2525                 qeth_free_qdio_buffers(card);
2526                 goto out_qdio;
2527         }
2528         rc = qeth_qdio_activate(card);
2529         if (rc) {
2530                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2531                 goto out_qdio;
2532         }
2533         rc = qeth_dm_act(card);
2534         if (rc) {
2535                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2536                 goto out_qdio;
2537         }
2538
2539         return 0;
2540 out_qdio:
2541         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2542         return rc;
2543 }
2544
2545 static void qeth_print_status_with_portname(struct qeth_card *card)
2546 {
2547         char dbf_text[15];
2548         int i;
2549
2550         sprintf(dbf_text, "%s", card->info.portname + 1);
2551         for (i = 0; i < 8; i++)
2552                 dbf_text[i] =
2553                         (char) _ebcasc[(__u8) dbf_text[i]];
2554         dbf_text[8] = 0;
2555         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2556                "with link type %s (portname: %s)\n",
2557                qeth_get_cardname(card),
2558                (card->info.mcl_level[0]) ? " (level: " : "",
2559                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2560                (card->info.mcl_level[0]) ? ")" : "",
2561                qeth_get_cardname_short(card),
2562                dbf_text);
2563
2564 }
2565
2566 static void qeth_print_status_no_portname(struct qeth_card *card)
2567 {
2568         if (card->info.portname[0])
2569                 dev_info(&card->gdev->dev, "Device is a%s "
2570                        "card%s%s%s\nwith link type %s "
2571                        "(no portname needed by interface).\n",
2572                        qeth_get_cardname(card),
2573                        (card->info.mcl_level[0]) ? " (level: " : "",
2574                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2575                        (card->info.mcl_level[0]) ? ")" : "",
2576                        qeth_get_cardname_short(card));
2577         else
2578                 dev_info(&card->gdev->dev, "Device is a%s "
2579                        "card%s%s%s\nwith link type %s.\n",
2580                        qeth_get_cardname(card),
2581                        (card->info.mcl_level[0]) ? " (level: " : "",
2582                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2583                        (card->info.mcl_level[0]) ? ")" : "",
2584                        qeth_get_cardname_short(card));
2585 }
2586
2587 void qeth_print_status_message(struct qeth_card *card)
2588 {
2589         switch (card->info.type) {
2590         case QETH_CARD_TYPE_OSD:
2591         case QETH_CARD_TYPE_OSM:
2592         case QETH_CARD_TYPE_OSX:
2593                 /* VM will use a non-zero first character
2594                  * to indicate a HiperSockets like reporting
2595                  * of the level OSA sets the first character to zero
2596                  * */
2597                 if (!card->info.mcl_level[0]) {
2598                         sprintf(card->info.mcl_level, "%02x%02x",
2599                                 card->info.mcl_level[2],
2600                                 card->info.mcl_level[3]);
2601
2602                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2603                         break;
2604                 }
2605                 /* fallthrough */
2606         case QETH_CARD_TYPE_IQD:
2607                 if ((card->info.guestlan) ||
2608                     (card->info.mcl_level[0] & 0x80)) {
2609                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2610                                 card->info.mcl_level[0]];
2611                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2612                                 card->info.mcl_level[1]];
2613                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2614                                 card->info.mcl_level[2]];
2615                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2616                                 card->info.mcl_level[3]];
2617                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2618                 }
2619                 break;
2620         default:
2621                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2622         }
2623         if (card->info.portname_required)
2624                 qeth_print_status_with_portname(card);
2625         else
2626                 qeth_print_status_no_portname(card);
2627 }
2628 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2629
2630 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2631 {
2632         struct qeth_buffer_pool_entry *entry;
2633
2634         QETH_CARD_TEXT(card, 5, "inwrklst");
2635
2636         list_for_each_entry(entry,
2637                             &card->qdio.init_pool.entry_list, init_list) {
2638                 qeth_put_buffer_pool_entry(card, entry);
2639         }
2640 }
2641
2642 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2643                 struct qeth_card *card)
2644 {
2645         struct list_head *plh;
2646         struct qeth_buffer_pool_entry *entry;
2647         int i, free;
2648         struct page *page;
2649
2650         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2651                 return NULL;
2652
2653         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2654                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2655                 free = 1;
2656                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2657                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2658                                 free = 0;
2659                                 break;
2660                         }
2661                 }
2662                 if (free) {
2663                         list_del_init(&entry->list);
2664                         return entry;
2665                 }
2666         }
2667
2668         /* no free buffer in pool so take first one and swap pages */
2669         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2670                         struct qeth_buffer_pool_entry, list);
2671         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2672                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2673                         page = alloc_page(GFP_ATOMIC);
2674                         if (!page) {
2675                                 return NULL;
2676                         } else {
2677                                 free_page((unsigned long)entry->elements[i]);
2678                                 entry->elements[i] = page_address(page);
2679                                 if (card->options.performance_stats)
2680                                         card->perf_stats.sg_alloc_page_rx++;
2681                         }
2682                 }
2683         }
2684         list_del_init(&entry->list);
2685         return entry;
2686 }
2687
2688 static int qeth_init_input_buffer(struct qeth_card *card,
2689                 struct qeth_qdio_buffer *buf)
2690 {
2691         struct qeth_buffer_pool_entry *pool_entry;
2692         int i;
2693
2694         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2695                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2696                 if (!buf->rx_skb)
2697                         return 1;
2698         }
2699
2700         pool_entry = qeth_find_free_buffer_pool_entry(card);
2701         if (!pool_entry)
2702                 return 1;
2703
2704         /*
2705          * since the buffer is accessed only from the input_tasklet
2706          * there shouldn't be a need to synchronize; also, since we use
2707          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2708          * buffers
2709          */
2710
2711         buf->pool_entry = pool_entry;
2712         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2713                 buf->buffer->element[i].length = PAGE_SIZE;
2714                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2715                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2716                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2717                 else
2718                         buf->buffer->element[i].eflags = 0;
2719                 buf->buffer->element[i].sflags = 0;
2720         }
2721         return 0;
2722 }
2723
2724 int qeth_init_qdio_queues(struct qeth_card *card)
2725 {
2726         int i, j;
2727         int rc;
2728
2729         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2730
2731         /* inbound queue */
2732         memset(card->qdio.in_q->qdio_bufs, 0,
2733                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2734         qeth_initialize_working_pool_list(card);
2735         /*give only as many buffers to hardware as we have buffer pool entries*/
2736         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2737                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2738         card->qdio.in_q->next_buf_to_init =
2739                 card->qdio.in_buf_pool.buf_count - 1;
2740         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2741                      card->qdio.in_buf_pool.buf_count - 1);
2742         if (rc) {
2743                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2744                 return rc;
2745         }
2746
2747         /* completion */
2748         rc = qeth_cq_init(card);
2749         if (rc) {
2750                 return rc;
2751         }
2752
2753         /* outbound queue */
2754         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2755                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2756                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2757                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2758                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2759                                         card->qdio.out_qs[i]->bufs[j],
2760                                         QETH_QDIO_BUF_EMPTY);
2761                 }
2762                 card->qdio.out_qs[i]->card = card;
2763                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2764                 card->qdio.out_qs[i]->do_pack = 0;
2765                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2766                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2767                 atomic_set(&card->qdio.out_qs[i]->state,
2768                            QETH_OUT_Q_UNLOCKED);
2769         }
2770         return 0;
2771 }
2772 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2773
2774 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2775 {
2776         switch (link_type) {
2777         case QETH_LINK_TYPE_HSTR:
2778                 return 2;
2779         default:
2780                 return 1;
2781         }
2782 }
2783
2784 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2785                 struct qeth_ipa_cmd *cmd, __u8 command,
2786                 enum qeth_prot_versions prot)
2787 {
2788         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2789         cmd->hdr.command = command;
2790         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2791         cmd->hdr.seqno = card->seqno.ipa;
2792         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2793         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2794         if (card->options.layer2)
2795                 cmd->hdr.prim_version_no = 2;
2796         else
2797                 cmd->hdr.prim_version_no = 1;
2798         cmd->hdr.param_count = 1;
2799         cmd->hdr.prot_version = prot;
2800         cmd->hdr.ipa_supported = 0;
2801         cmd->hdr.ipa_enabled = 0;
2802 }
2803
2804 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2805                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2806 {
2807         struct qeth_cmd_buffer *iob;
2808         struct qeth_ipa_cmd *cmd;
2809
2810         iob = qeth_wait_for_buffer(&card->write);
2811         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2812         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2813
2814         return iob;
2815 }
2816 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2817
2818 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2819                 char prot_type)
2820 {
2821         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2822         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2823         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2824                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2825 }
2826 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2827
2828 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2829                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2830                         unsigned long),
2831                 void *reply_param)
2832 {
2833         int rc;
2834         char prot_type;
2835
2836         QETH_CARD_TEXT(card, 4, "sendipa");
2837
2838         if (card->options.layer2)
2839                 if (card->info.type == QETH_CARD_TYPE_OSN)
2840                         prot_type = QETH_PROT_OSN2;
2841                 else
2842                         prot_type = QETH_PROT_LAYER2;
2843         else
2844                 prot_type = QETH_PROT_TCPIP;
2845         qeth_prepare_ipa_cmd(card, iob, prot_type);
2846         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2847                                                 iob, reply_cb, reply_param);
2848         if (rc == -ETIME) {
2849                 qeth_clear_ipacmd_list(card);
2850                 qeth_schedule_recovery(card);
2851         }
2852         return rc;
2853 }
2854 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2855
2856 int qeth_send_startlan(struct qeth_card *card)
2857 {
2858         int rc;
2859         struct qeth_cmd_buffer *iob;
2860
2861         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2862
2863         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2864         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2865         return rc;
2866 }
2867 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2868
2869 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2870                 struct qeth_reply *reply, unsigned long data)
2871 {
2872         struct qeth_ipa_cmd *cmd;
2873
2874         QETH_CARD_TEXT(card, 4, "defadpcb");
2875
2876         cmd = (struct qeth_ipa_cmd *) data;
2877         if (cmd->hdr.return_code == 0)
2878                 cmd->hdr.return_code =
2879                         cmd->data.setadapterparms.hdr.return_code;
2880         return 0;
2881 }
2882 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2883
2884 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2885                 struct qeth_reply *reply, unsigned long data)
2886 {
2887         struct qeth_ipa_cmd *cmd;
2888
2889         QETH_CARD_TEXT(card, 3, "quyadpcb");
2890
2891         cmd = (struct qeth_ipa_cmd *) data;
2892         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2893                 card->info.link_type =
2894                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2895                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2896         }
2897         card->options.adp.supported_funcs =
2898                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2899         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2900 }
2901
2902 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2903                 __u32 command, __u32 cmdlen)
2904 {
2905         struct qeth_cmd_buffer *iob;
2906         struct qeth_ipa_cmd *cmd;
2907
2908         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2909                                      QETH_PROT_IPV4);
2910         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2911         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2912         cmd->data.setadapterparms.hdr.command_code = command;
2913         cmd->data.setadapterparms.hdr.used_total = 1;
2914         cmd->data.setadapterparms.hdr.seq_no = 1;
2915
2916         return iob;
2917 }
2918 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2919
2920 int qeth_query_setadapterparms(struct qeth_card *card)
2921 {
2922         int rc;
2923         struct qeth_cmd_buffer *iob;
2924
2925         QETH_CARD_TEXT(card, 3, "queryadp");
2926         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2927                                    sizeof(struct qeth_ipacmd_setadpparms));
2928         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2929         return rc;
2930 }
2931 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2932
2933 static int qeth_query_ipassists_cb(struct qeth_card *card,
2934                 struct qeth_reply *reply, unsigned long data)
2935 {
2936         struct qeth_ipa_cmd *cmd;
2937
2938         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2939
2940         cmd = (struct qeth_ipa_cmd *) data;
2941         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2942                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2943                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2944         } else {
2945                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2946                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2947         }
2948         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2949         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
2950         QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2951         return 0;
2952 }
2953
2954 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2955 {
2956         int rc;
2957         struct qeth_cmd_buffer *iob;
2958
2959         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2960         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2961         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2962         return rc;
2963 }
2964 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2965
2966 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2967                 struct qeth_reply *reply, unsigned long data)
2968 {
2969         struct qeth_ipa_cmd *cmd;
2970         __u16 rc;
2971
2972         cmd = (struct qeth_ipa_cmd *)data;
2973         rc = cmd->hdr.return_code;
2974         if (rc)
2975                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2976         else
2977                 card->info.diagass_support = cmd->data.diagass.ext;
2978         return 0;
2979 }
2980
2981 static int qeth_query_setdiagass(struct qeth_card *card)
2982 {
2983         struct qeth_cmd_buffer *iob;
2984         struct qeth_ipa_cmd    *cmd;
2985
2986         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2987         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2988         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2989         cmd->data.diagass.subcmd_len = 16;
2990         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2991         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2992 }
2993
2994 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2995 {
2996         unsigned long info = get_zeroed_page(GFP_KERNEL);
2997         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2998         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2999         struct ccw_dev_id ccwid;
3000         int level, rc;
3001
3002         tid->chpid = card->info.chpid;
3003         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3004         tid->ssid = ccwid.ssid;
3005         tid->devno = ccwid.devno;
3006         if (!info)
3007                 return;
3008
3009         rc = stsi(NULL, 0, 0, 0);
3010         if (rc == -ENOSYS)
3011                 level = rc;
3012         else
3013                 level = (((unsigned int) rc) >> 28);
3014
3015         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
3016                 tid->lparnr = info222->lpar_number;
3017
3018         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
3019                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3020                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3021         }
3022         free_page(info);
3023         return;
3024 }
3025
3026 static int qeth_hw_trap_cb(struct qeth_card *card,
3027                 struct qeth_reply *reply, unsigned long data)
3028 {
3029         struct qeth_ipa_cmd *cmd;
3030         __u16 rc;
3031
3032         cmd = (struct qeth_ipa_cmd *)data;
3033         rc = cmd->hdr.return_code;
3034         if (rc)
3035                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3036         return 0;
3037 }
3038
3039 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3040 {
3041         struct qeth_cmd_buffer *iob;
3042         struct qeth_ipa_cmd *cmd;
3043
3044         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3045         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3046         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3047         cmd->data.diagass.subcmd_len = 80;
3048         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3049         cmd->data.diagass.type = 1;
3050         cmd->data.diagass.action = action;
3051         switch (action) {
3052         case QETH_DIAGS_TRAP_ARM:
3053                 cmd->data.diagass.options = 0x0003;
3054                 cmd->data.diagass.ext = 0x00010000 +
3055                         sizeof(struct qeth_trap_id);
3056                 qeth_get_trap_id(card,
3057                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3058                 break;
3059         case QETH_DIAGS_TRAP_DISARM:
3060                 cmd->data.diagass.options = 0x0001;
3061                 break;
3062         case QETH_DIAGS_TRAP_CAPTURE:
3063                 break;
3064         }
3065         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3066 }
3067 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3068
3069 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3070                 unsigned int qdio_error, const char *dbftext)
3071 {
3072         if (qdio_error) {
3073                 QETH_CARD_TEXT(card, 2, dbftext);
3074                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3075                                buf->element[15].sflags);
3076                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3077                                buf->element[14].sflags);
3078                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3079                 if ((buf->element[15].sflags) == 0x12) {
3080                         card->stats.rx_dropped++;
3081                         return 0;
3082                 } else
3083                         return 1;
3084         }
3085         return 0;
3086 }
3087 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3088
3089 void qeth_buffer_reclaim_work(struct work_struct *work)
3090 {
3091         struct qeth_card *card = container_of(work, struct qeth_card,
3092                 buffer_reclaim_work.work);
3093
3094         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3095         qeth_queue_input_buffer(card, card->reclaim_index);
3096 }
3097
3098 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3099 {
3100         struct qeth_qdio_q *queue = card->qdio.in_q;
3101         struct list_head *lh;
3102         int count;
3103         int i;
3104         int rc;
3105         int newcount = 0;
3106
3107         count = (index < queue->next_buf_to_init)?
3108                 card->qdio.in_buf_pool.buf_count -
3109                 (queue->next_buf_to_init - index) :
3110                 card->qdio.in_buf_pool.buf_count -
3111                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3112         /* only requeue at a certain threshold to avoid SIGAs */
3113         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3114                 for (i = queue->next_buf_to_init;
3115                      i < queue->next_buf_to_init + count; ++i) {
3116                         if (qeth_init_input_buffer(card,
3117                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3118                                 break;
3119                         } else {
3120                                 newcount++;
3121                         }
3122                 }
3123
3124                 if (newcount < count) {
3125                         /* we are in memory shortage so we switch back to
3126                            traditional skb allocation and drop packages */
3127                         atomic_set(&card->force_alloc_skb, 3);
3128                         count = newcount;
3129                 } else {
3130                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3131                 }
3132
3133                 if (!count) {
3134                         i = 0;
3135                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3136                                 i++;
3137                         if (i == card->qdio.in_buf_pool.buf_count) {
3138                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3139                                 card->reclaim_index = index;
3140                                 schedule_delayed_work(
3141                                         &card->buffer_reclaim_work,
3142                                         QETH_RECLAIM_WORK_TIME);
3143                         }
3144                         return;
3145                 }
3146
3147                 /*
3148                  * according to old code it should be avoided to requeue all
3149                  * 128 buffers in order to benefit from PCI avoidance.
3150                  * this function keeps at least one buffer (the buffer at
3151                  * 'index') un-requeued -> this buffer is the first buffer that
3152                  * will be requeued the next time
3153                  */
3154                 if (card->options.performance_stats) {
3155                         card->perf_stats.inbound_do_qdio_cnt++;
3156                         card->perf_stats.inbound_do_qdio_start_time =
3157                                 qeth_get_micros();
3158                 }
3159                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3160                              queue->next_buf_to_init, count);
3161                 if (card->options.performance_stats)
3162                         card->perf_stats.inbound_do_qdio_time +=
3163                                 qeth_get_micros() -
3164                                 card->perf_stats.inbound_do_qdio_start_time;
3165                 if (rc) {
3166                         QETH_CARD_TEXT(card, 2, "qinberr");
3167                 }
3168                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3169                                           QDIO_MAX_BUFFERS_PER_Q;
3170         }
3171 }
3172 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3173
3174 static int qeth_handle_send_error(struct qeth_card *card,
3175                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3176 {
3177         int sbalf15 = buffer->buffer->element[15].sflags;
3178
3179         QETH_CARD_TEXT(card, 6, "hdsnderr");
3180         if (card->info.type == QETH_CARD_TYPE_IQD) {
3181                 if (sbalf15 == 0) {
3182                         qdio_err = 0;
3183                 } else {
3184                         qdio_err = 1;
3185                 }
3186         }
3187         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3188
3189         if (!qdio_err)
3190                 return QETH_SEND_ERROR_NONE;
3191
3192         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3193                 return QETH_SEND_ERROR_RETRY;
3194
3195         QETH_CARD_TEXT(card, 1, "lnkfail");
3196         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3197                        (u16)qdio_err, (u8)sbalf15);
3198         return QETH_SEND_ERROR_LINK_FAILURE;
3199 }
3200
3201 /*
3202  * Switched to packing state if the number of used buffers on a queue
3203  * reaches a certain limit.
3204  */
3205 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3206 {
3207         if (!queue->do_pack) {
3208                 if (atomic_read(&queue->used_buffers)
3209                     >= QETH_HIGH_WATERMARK_PACK){
3210                         /* switch non-PACKING -> PACKING */
3211                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3212                         if (queue->card->options.performance_stats)
3213                                 queue->card->perf_stats.sc_dp_p++;
3214                         queue->do_pack = 1;
3215                 }
3216         }
3217 }
3218
3219 /*
3220  * Switches from packing to non-packing mode. If there is a packing
3221  * buffer on the queue this buffer will be prepared to be flushed.
3222  * In that case 1 is returned to inform the caller. If no buffer
3223  * has to be flushed, zero is returned.
3224  */
3225 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3226 {
3227         struct qeth_qdio_out_buffer *buffer;
3228         int flush_count = 0;
3229
3230         if (queue->do_pack) {
3231                 if (atomic_read(&queue->used_buffers)
3232                     <= QETH_LOW_WATERMARK_PACK) {
3233                         /* switch PACKING -> non-PACKING */
3234                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3235                         if (queue->card->options.performance_stats)
3236                                 queue->card->perf_stats.sc_p_dp++;
3237                         queue->do_pack = 0;
3238                         /* flush packing buffers */
3239                         buffer = queue->bufs[queue->next_buf_to_fill];
3240                         if ((atomic_read(&buffer->state) ==
3241                                                 QETH_QDIO_BUF_EMPTY) &&
3242                             (buffer->next_element_to_fill > 0)) {
3243                                 atomic_set(&buffer->state,
3244                                            QETH_QDIO_BUF_PRIMED);
3245                                 flush_count++;
3246                                 queue->next_buf_to_fill =
3247                                         (queue->next_buf_to_fill + 1) %
3248                                         QDIO_MAX_BUFFERS_PER_Q;
3249                         }
3250                 }
3251         }
3252         return flush_count;
3253 }
3254
3255
3256 /*
3257  * Called to flush a packing buffer if no more pci flags are on the queue.
3258  * Checks if there is a packing buffer and prepares it to be flushed.
3259  * In that case returns 1, otherwise zero.
3260  */
3261 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3262 {
3263         struct qeth_qdio_out_buffer *buffer;
3264
3265         buffer = queue->bufs[queue->next_buf_to_fill];
3266         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3267            (buffer->next_element_to_fill > 0)) {
3268                 /* it's a packing buffer */
3269                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3270                 queue->next_buf_to_fill =
3271                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3272                 return 1;
3273         }
3274         return 0;
3275 }
3276
3277 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3278                                int count)
3279 {
3280         struct qeth_qdio_out_buffer *buf;
3281         int rc;
3282         int i;
3283         unsigned int qdio_flags;
3284
3285         for (i = index; i < index + count; ++i) {
3286                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3287                 buf = queue->bufs[bidx];
3288                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3289                                 SBAL_EFLAGS_LAST_ENTRY;
3290
3291                 if (queue->bufstates)
3292                         queue->bufstates[bidx].user = buf;
3293
3294                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3295                         continue;
3296
3297                 if (!queue->do_pack) {
3298                         if ((atomic_read(&queue->used_buffers) >=
3299                                 (QETH_HIGH_WATERMARK_PACK -
3300                                  QETH_WATERMARK_PACK_FUZZ)) &&
3301                             !atomic_read(&queue->set_pci_flags_count)) {
3302                                 /* it's likely that we'll go to packing
3303                                  * mode soon */
3304                                 atomic_inc(&queue->set_pci_flags_count);
3305                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3306                         }
3307                 } else {
3308                         if (!atomic_read(&queue->set_pci_flags_count)) {
3309                                 /*
3310                                  * there's no outstanding PCI any more, so we
3311                                  * have to request a PCI to be sure the the PCI
3312                                  * will wake at some time in the future then we
3313                                  * can flush packed buffers that might still be
3314                                  * hanging around, which can happen if no
3315                                  * further send was requested by the stack
3316                                  */
3317                                 atomic_inc(&queue->set_pci_flags_count);
3318                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3319                         }
3320                 }
3321         }
3322
3323         queue->card->dev->trans_start = jiffies;
3324         if (queue->card->options.performance_stats) {
3325                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3326                 queue->card->perf_stats.outbound_do_qdio_start_time =
3327                         qeth_get_micros();
3328         }
3329         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3330         if (atomic_read(&queue->set_pci_flags_count))
3331                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3332         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3333                      queue->queue_no, index, count);
3334         if (queue->card->options.performance_stats)
3335                 queue->card->perf_stats.outbound_do_qdio_time +=
3336                         qeth_get_micros() -
3337                         queue->card->perf_stats.outbound_do_qdio_start_time;
3338         atomic_add(count, &queue->used_buffers);
3339         if (rc) {
3340                 queue->card->stats.tx_errors += count;
3341                 /* ignore temporary SIGA errors without busy condition */
3342                 if (rc == QDIO_ERROR_SIGA_TARGET)
3343                         return;
3344                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3345                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3346                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3347                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3348                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3349
3350                 /* this must not happen under normal circumstances. if it
3351                  * happens something is really wrong -> recover */
3352                 qeth_schedule_recovery(queue->card);
3353                 return;
3354         }
3355         if (queue->card->options.performance_stats)
3356                 queue->card->perf_stats.bufs_sent += count;
3357 }
3358
3359 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3360 {
3361         int index;
3362         int flush_cnt = 0;
3363         int q_was_packing = 0;
3364
3365         /*
3366          * check if weed have to switch to non-packing mode or if
3367          * we have to get a pci flag out on the queue
3368          */
3369         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3370             !atomic_read(&queue->set_pci_flags_count)) {
3371                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3372                                 QETH_OUT_Q_UNLOCKED) {
3373                         /*
3374                          * If we get in here, there was no action in
3375                          * do_send_packet. So, we check if there is a
3376                          * packing buffer to be flushed here.
3377                          */
3378                         netif_stop_queue(queue->card->dev);
3379                         index = queue->next_buf_to_fill;
3380                         q_was_packing = queue->do_pack;
3381                         /* queue->do_pack may change */
3382                         barrier();
3383                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3384                         if (!flush_cnt &&
3385                             !atomic_read(&queue->set_pci_flags_count))
3386                                 flush_cnt +=
3387                                         qeth_flush_buffers_on_no_pci(queue);
3388                         if (queue->card->options.performance_stats &&
3389                             q_was_packing)
3390                                 queue->card->perf_stats.bufs_sent_pack +=
3391                                         flush_cnt;
3392                         if (flush_cnt)
3393                                 qeth_flush_buffers(queue, index, flush_cnt);
3394                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3395                 }
3396         }
3397 }
3398
3399 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3400                 unsigned long card_ptr)
3401 {
3402         struct qeth_card *card = (struct qeth_card *)card_ptr;
3403
3404         if (card->dev && (card->dev->flags & IFF_UP))
3405                 napi_schedule(&card->napi);
3406 }
3407 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3408
3409 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3410 {
3411         int rc;
3412
3413         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3414                 rc = -1;
3415                 goto out;
3416         } else {
3417                 if (card->options.cq == cq) {
3418                         rc = 0;
3419                         goto out;
3420                 }
3421
3422                 if (card->state != CARD_STATE_DOWN &&
3423                     card->state != CARD_STATE_RECOVER) {
3424                         rc = -1;
3425                         goto out;
3426                 }
3427
3428                 qeth_free_qdio_buffers(card);
3429                 card->options.cq = cq;
3430                 rc = 0;
3431         }
3432 out:
3433         return rc;
3434
3435 }
3436 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3437
3438
3439 static void qeth_qdio_cq_handler(struct qeth_card *card,
3440                 unsigned int qdio_err,
3441                 unsigned int queue, int first_element, int count) {
3442         struct qeth_qdio_q *cq = card->qdio.c_q;
3443         int i;
3444         int rc;
3445
3446         if (!qeth_is_cq(card, queue))
3447                 goto out;
3448
3449         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3450         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3451         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3452
3453         if (qdio_err) {
3454                 netif_stop_queue(card->dev);
3455                 qeth_schedule_recovery(card);
3456                 goto out;
3457         }
3458
3459         if (card->options.performance_stats) {
3460                 card->perf_stats.cq_cnt++;
3461                 card->perf_stats.cq_start_time = qeth_get_micros();
3462         }
3463
3464         for (i = first_element; i < first_element + count; ++i) {
3465                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3466                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3467                 int e;
3468
3469                 e = 0;
3470                 while (buffer->element[e].addr) {
3471                         unsigned long phys_aob_addr;
3472
3473                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3474                         qeth_qdio_handle_aob(card, phys_aob_addr);
3475                         buffer->element[e].addr = NULL;
3476                         buffer->element[e].eflags = 0;
3477                         buffer->element[e].sflags = 0;
3478                         buffer->element[e].length = 0;
3479
3480                         ++e;
3481                 }
3482
3483                 buffer->element[15].eflags = 0;
3484                 buffer->element[15].sflags = 0;
3485         }
3486         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3487                     card->qdio.c_q->next_buf_to_init,
3488                     count);
3489         if (rc) {
3490                 dev_warn(&card->gdev->dev,
3491                         "QDIO reported an error, rc=%i\n", rc);
3492                 QETH_CARD_TEXT(card, 2, "qcqherr");
3493         }
3494         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3495                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3496
3497         netif_wake_queue(card->dev);
3498
3499         if (card->options.performance_stats) {
3500                 int delta_t = qeth_get_micros();
3501                 delta_t -= card->perf_stats.cq_start_time;
3502                 card->perf_stats.cq_time += delta_t;
3503         }
3504 out:
3505         return;
3506 }
3507
3508 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3509                 unsigned int queue, int first_elem, int count,
3510                 unsigned long card_ptr)
3511 {
3512         struct qeth_card *card = (struct qeth_card *)card_ptr;
3513
3514         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3515         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3516
3517         if (qeth_is_cq(card, queue))
3518                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3519         else if (qdio_err)
3520                 qeth_schedule_recovery(card);
3521
3522
3523 }
3524 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3525
3526 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3527                 unsigned int qdio_error, int __queue, int first_element,
3528                 int count, unsigned long card_ptr)
3529 {
3530         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3531         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3532         struct qeth_qdio_out_buffer *buffer;
3533         int i;
3534
3535         QETH_CARD_TEXT(card, 6, "qdouhdl");
3536         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3537                 QETH_CARD_TEXT(card, 2, "achkcond");
3538                 netif_stop_queue(card->dev);
3539                 qeth_schedule_recovery(card);
3540                 return;
3541         }
3542         if (card->options.performance_stats) {
3543                 card->perf_stats.outbound_handler_cnt++;
3544                 card->perf_stats.outbound_handler_start_time =
3545                         qeth_get_micros();
3546         }
3547         for (i = first_element; i < (first_element + count); ++i) {
3548                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3549                 buffer = queue->bufs[bidx];
3550                 qeth_handle_send_error(card, buffer, qdio_error);
3551
3552                 if (queue->bufstates &&
3553                     (queue->bufstates[bidx].flags &
3554                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3555                         BUG_ON(card->options.cq != QETH_CQ_ENABLED);
3556
3557                         if (atomic_cmpxchg(&buffer->state,
3558                                            QETH_QDIO_BUF_PRIMED,
3559                                            QETH_QDIO_BUF_PENDING) ==
3560                                 QETH_QDIO_BUF_PRIMED) {
3561                                 qeth_notify_skbs(queue, buffer,
3562                                                  TX_NOTIFY_PENDING);
3563                         }
3564                         buffer->aob = queue->bufstates[bidx].aob;
3565                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3566                         QETH_CARD_TEXT(queue->card, 5, "aob");
3567                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3568                                         virt_to_phys(buffer->aob));
3569                         BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3570                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3571                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3572                                 qeth_schedule_recovery(card);
3573                         }
3574                 } else {
3575                         if (card->options.cq == QETH_CQ_ENABLED) {
3576                                 enum iucv_tx_notify n;
3577
3578                                 n = qeth_compute_cq_notification(
3579                                         buffer->buffer->element[15].sflags, 0);
3580                                 qeth_notify_skbs(queue, buffer, n);
3581                         }
3582
3583                         qeth_clear_output_buffer(queue, buffer,
3584                                                 QETH_QDIO_BUF_EMPTY);
3585                 }
3586                 qeth_cleanup_handled_pending(queue, bidx, 0);
3587         }
3588         atomic_sub(count, &queue->used_buffers);
3589         /* check if we need to do something on this outbound queue */
3590         if (card->info.type != QETH_CARD_TYPE_IQD)
3591                 qeth_check_outbound_queue(queue);
3592
3593         netif_wake_queue(queue->card->dev);
3594         if (card->options.performance_stats)
3595                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3596                         card->perf_stats.outbound_handler_start_time;
3597 }
3598 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3599
3600 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3601                         int ipv, int cast_type)
3602 {
3603         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3604                      card->info.type == QETH_CARD_TYPE_OSX))
3605                 return card->qdio.default_out_queue;
3606         switch (card->qdio.no_out_queues) {
3607         case 4:
3608                 if (cast_type && card->info.is_multicast_different)
3609                         return card->info.is_multicast_different &
3610                                 (card->qdio.no_out_queues - 1);
3611                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3612                         const u8 tos = ip_hdr(skb)->tos;
3613
3614                         if (card->qdio.do_prio_queueing ==
3615                                 QETH_PRIO_Q_ING_TOS) {
3616                                 if (tos & IP_TOS_NOTIMPORTANT)
3617                                         return 3;
3618                                 if (tos & IP_TOS_HIGHRELIABILITY)
3619                                         return 2;
3620                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3621                                         return 1;
3622                                 if (tos & IP_TOS_LOWDELAY)
3623                                         return 0;
3624                         }
3625                         if (card->qdio.do_prio_queueing ==
3626                                 QETH_PRIO_Q_ING_PREC)
3627                                 return 3 - (tos >> 6);
3628                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3629                         /* TODO: IPv6!!! */
3630                 }
3631                 return card->qdio.default_out_queue;
3632         case 1: /* fallthrough for single-out-queue 1920-device */
3633         default:
3634                 return card->qdio.default_out_queue;
3635         }
3636 }
3637 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3638
3639 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3640                      struct sk_buff *skb, int elems)
3641 {
3642         int dlen = skb->len - skb->data_len;
3643         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3644                 PFN_DOWN((unsigned long)skb->data);
3645
3646         elements_needed += skb_shinfo(skb)->nr_frags;
3647         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3648                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3649                         "(Number=%d / Length=%d). Discarded.\n",
3650                         (elements_needed+elems), skb->len);
3651                 return 0;
3652         }
3653         return elements_needed;
3654 }
3655 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3656
3657 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3658 {
3659         int hroom, inpage, rest;
3660
3661         if (((unsigned long)skb->data & PAGE_MASK) !=
3662             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3663                 hroom = skb_headroom(skb);
3664                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3665                 rest = len - inpage;
3666                 if (rest > hroom)
3667                         return 1;
3668                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3669                 skb->data -= rest;
3670                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3671         }
3672         return 0;
3673 }
3674 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3675
3676 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3677         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3678         int offset)
3679 {
3680         int length = skb->len - skb->data_len;
3681         int length_here;
3682         int element;
3683         char *data;
3684         int first_lap, cnt;
3685         struct skb_frag_struct *frag;
3686
3687         element = *next_element_to_fill;
3688         data = skb->data;
3689         first_lap = (is_tso == 0 ? 1 : 0);
3690
3691         if (offset >= 0) {
3692                 data = skb->data + offset;
3693                 length -= offset;
3694                 first_lap = 0;
3695         }
3696
3697         while (length > 0) {
3698                 /* length_here is the remaining amount of data in this page */
3699                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3700                 if (length < length_here)
3701                         length_here = length;
3702
3703                 buffer->element[element].addr = data;
3704                 buffer->element[element].length = length_here;
3705                 length -= length_here;
3706                 if (!length) {
3707                         if (first_lap)
3708                                 if (skb_shinfo(skb)->nr_frags)
3709                                         buffer->element[element].eflags =
3710                                                 SBAL_EFLAGS_FIRST_FRAG;
3711                                 else
3712                                         buffer->element[element].eflags = 0;
3713                         else
3714                                 buffer->element[element].eflags =
3715                                     SBAL_EFLAGS_MIDDLE_FRAG;
3716                 } else {
3717                         if (first_lap)
3718                                 buffer->element[element].eflags =
3719                                     SBAL_EFLAGS_FIRST_FRAG;
3720                         else
3721                                 buffer->element[element].eflags =
3722                                     SBAL_EFLAGS_MIDDLE_FRAG;
3723                 }
3724                 data += length_here;
3725                 element++;
3726                 first_lap = 0;
3727         }
3728
3729         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3730                 frag = &skb_shinfo(skb)->frags[cnt];
3731                 buffer->element[element].addr = (char *)
3732                         page_to_phys(skb_frag_page(frag))
3733                         + frag->page_offset;
3734                 buffer->element[element].length = frag->size;
3735                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3736                 element++;
3737         }
3738
3739         if (buffer->element[element - 1].eflags)
3740                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3741         *next_element_to_fill = element;
3742 }
3743
3744 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3745                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3746                 struct qeth_hdr *hdr, int offset, int hd_len)
3747 {
3748         struct qdio_buffer *buffer;
3749         int flush_cnt = 0, hdr_len, large_send = 0;
3750
3751         buffer = buf->buffer;
3752         atomic_inc(&skb->users);
3753         skb_queue_tail(&buf->skb_list, skb);
3754
3755         /*check first on TSO ....*/
3756         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3757                 int element = buf->next_element_to_fill;
3758
3759                 hdr_len = sizeof(struct qeth_hdr_tso) +
3760                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3761                 /*fill first buffer entry only with header information */
3762                 buffer->element[element].addr = skb->data;
3763                 buffer->element[element].length = hdr_len;
3764                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3765                 buf->next_element_to_fill++;
3766                 skb->data += hdr_len;
3767                 skb->len  -= hdr_len;
3768                 large_send = 1;
3769         }
3770
3771         if (offset >= 0) {
3772                 int element = buf->next_element_to_fill;
3773                 buffer->element[element].addr = hdr;
3774                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3775                                                         hd_len;
3776                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3777                 buf->is_header[element] = 1;
3778                 buf->next_element_to_fill++;
3779         }
3780
3781         __qeth_fill_buffer(skb, buffer, large_send,
3782                 (int *)&buf->next_element_to_fill, offset);
3783
3784         if (!queue->do_pack) {
3785                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3786                 /* set state to PRIMED -> will be flushed */
3787                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3788                 flush_cnt = 1;
3789         } else {
3790                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3791                 if (queue->card->options.performance_stats)
3792                         queue->card->perf_stats.skbs_sent_pack++;
3793                 if (buf->next_element_to_fill >=
3794                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3795                         /*
3796                          * packed buffer if full -> set state PRIMED
3797                          * -> will be flushed
3798                          */
3799                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3800                         flush_cnt = 1;
3801                 }
3802         }
3803         return flush_cnt;
3804 }
3805
3806 int qeth_do_send_packet_fast(struct qeth_card *card,
3807                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3808                 struct qeth_hdr *hdr, int elements_needed,
3809                 int offset, int hd_len)
3810 {
3811         struct qeth_qdio_out_buffer *buffer;
3812         int index;
3813
3814         /* spin until we get the queue ... */
3815         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3816                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3817         /* ... now we've got the queue */
3818         index = queue->next_buf_to_fill;
3819         buffer = queue->bufs[queue->next_buf_to_fill];
3820         /*
3821          * check if buffer is empty to make sure that we do not 'overtake'
3822          * ourselves and try to fill a buffer that is already primed
3823          */
3824         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3825                 goto out;
3826         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3827                                           QDIO_MAX_BUFFERS_PER_Q;
3828         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3829         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3830         qeth_flush_buffers(queue, index, 1);
3831         return 0;
3832 out:
3833         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3834         return -EBUSY;
3835 }
3836 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3837
3838 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3839                 struct sk_buff *skb, struct qeth_hdr *hdr,
3840                 int elements_needed)
3841 {
3842         struct qeth_qdio_out_buffer *buffer;
3843         int start_index;
3844         int flush_count = 0;
3845         int do_pack = 0;
3846         int tmp;
3847         int rc = 0;
3848
3849         /* spin until we get the queue ... */
3850         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3851                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3852         start_index = queue->next_buf_to_fill;
3853         buffer = queue->bufs[queue->next_buf_to_fill];
3854         /*
3855          * check if buffer is empty to make sure that we do not 'overtake'
3856          * ourselves and try to fill a buffer that is already primed
3857          */
3858         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3859                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3860                 return -EBUSY;
3861         }
3862         /* check if we need to switch packing state of this queue */
3863         qeth_switch_to_packing_if_needed(queue);
3864         if (queue->do_pack) {
3865                 do_pack = 1;
3866                 /* does packet fit in current buffer? */
3867                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3868                     buffer->next_element_to_fill) < elements_needed) {
3869                         /* ... no -> set state PRIMED */
3870                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3871                         flush_count++;
3872                         queue->next_buf_to_fill =
3873                                 (queue->next_buf_to_fill + 1) %
3874                                 QDIO_MAX_BUFFERS_PER_Q;
3875                         buffer = queue->bufs[queue->next_buf_to_fill];
3876                         /* we did a step forward, so check buffer state
3877                          * again */
3878                         if (atomic_read(&buffer->state) !=
3879                             QETH_QDIO_BUF_EMPTY) {
3880                                 qeth_flush_buffers(queue, start_index,
3881                                                            flush_count);
3882                                 atomic_set(&queue->state,
3883                                                 QETH_OUT_Q_UNLOCKED);
3884                                 return -EBUSY;
3885                         }
3886                 }
3887         }
3888         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3889         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3890                                   QDIO_MAX_BUFFERS_PER_Q;
3891         flush_count += tmp;
3892         if (flush_count)
3893                 qeth_flush_buffers(queue, start_index, flush_count);
3894         else if (!atomic_read(&queue->set_pci_flags_count))
3895                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3896         /*
3897          * queue->state will go from LOCKED -> UNLOCKED or from
3898          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3899          * (switch packing state or flush buffer to get another pci flag out).
3900          * In that case we will enter this loop
3901          */
3902         while (atomic_dec_return(&queue->state)) {
3903                 flush_count = 0;
3904                 start_index = queue->next_buf_to_fill;
3905                 /* check if we can go back to non-packing state */
3906                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3907                 /*
3908                  * check if we need to flush a packing buffer to get a pci
3909                  * flag out on the queue
3910                  */
3911                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3912                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3913                 if (flush_count)
3914                         qeth_flush_buffers(queue, start_index, flush_count);
3915         }
3916         /* at this point the queue is UNLOCKED again */
3917         if (queue->card->options.performance_stats && do_pack)
3918                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3919
3920         return rc;
3921 }
3922 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3923
3924 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3925                 struct qeth_reply *reply, unsigned long data)
3926 {
3927         struct qeth_ipa_cmd *cmd;
3928         struct qeth_ipacmd_setadpparms *setparms;
3929
3930         QETH_CARD_TEXT(card, 4, "prmadpcb");
3931
3932         cmd = (struct qeth_ipa_cmd *) data;
3933         setparms = &(cmd->data.setadapterparms);
3934
3935         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3936         if (cmd->hdr.return_code) {
3937                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3938                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3939         }
3940         card->info.promisc_mode = setparms->data.mode;
3941         return 0;
3942 }
3943
3944 void qeth_setadp_promisc_mode(struct qeth_card *card)
3945 {
3946         enum qeth_ipa_promisc_modes mode;
3947         struct net_device *dev = card->dev;
3948         struct qeth_cmd_buffer *iob;
3949         struct qeth_ipa_cmd *cmd;
3950
3951         QETH_CARD_TEXT(card, 4, "setprom");
3952
3953         if (((dev->flags & IFF_PROMISC) &&
3954              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3955             (!(dev->flags & IFF_PROMISC) &&
3956              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3957                 return;
3958         mode = SET_PROMISC_MODE_OFF;
3959         if (dev->flags & IFF_PROMISC)
3960                 mode = SET_PROMISC_MODE_ON;
3961         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3962
3963         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3964                         sizeof(struct qeth_ipacmd_setadpparms));
3965         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3966         cmd->data.setadapterparms.data.mode = mode;
3967         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3968 }
3969 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3970
3971 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3972 {
3973         struct qeth_card *card;
3974         char dbf_text[15];
3975
3976         card = dev->ml_priv;
3977
3978         QETH_CARD_TEXT(card, 4, "chgmtu");
3979         sprintf(dbf_text, "%8x", new_mtu);
3980         QETH_CARD_TEXT(card, 4, dbf_text);
3981
3982         if (new_mtu < 64)
3983                 return -EINVAL;
3984         if (new_mtu > 65535)
3985                 return -EINVAL;
3986         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3987             (!qeth_mtu_is_valid(card, new_mtu)))
3988                 return -EINVAL;
3989         dev->mtu = new_mtu;
3990         return 0;
3991 }
3992 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3993
3994 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3995 {
3996         struct qeth_card *card;
3997
3998         card = dev->ml_priv;
3999
4000         QETH_CARD_TEXT(card, 5, "getstat");
4001
4002         return &card->stats;
4003 }
4004 EXPORT_SYMBOL_GPL(qeth_get_stats);
4005
4006 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4007                 struct qeth_reply *reply, unsigned long data)
4008 {
4009         struct qeth_ipa_cmd *cmd;
4010
4011         QETH_CARD_TEXT(card, 4, "chgmaccb");
4012
4013         cmd = (struct qeth_ipa_cmd *) data;
4014         if (!card->options.layer2 ||
4015             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4016                 memcpy(card->dev->dev_addr,
4017                        &cmd->data.setadapterparms.data.change_addr.addr,
4018                        OSA_ADDR_LEN);
4019                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4020         }
4021         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4022         return 0;
4023 }
4024
4025 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4026 {
4027         int rc;
4028         struct qeth_cmd_buffer *iob;
4029         struct qeth_ipa_cmd *cmd;
4030
4031         QETH_CARD_TEXT(card, 4, "chgmac");
4032
4033         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4034                                    sizeof(struct qeth_ipacmd_setadpparms));
4035         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4036         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4037         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4038         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4039                card->dev->dev_addr, OSA_ADDR_LEN);
4040         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4041                                NULL);
4042         return rc;
4043 }
4044 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4045
4046 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4047                 struct qeth_reply *reply, unsigned long data)
4048 {
4049         struct qeth_ipa_cmd *cmd;
4050         struct qeth_set_access_ctrl *access_ctrl_req;
4051
4052         QETH_CARD_TEXT(card, 4, "setaccb");
4053
4054         cmd = (struct qeth_ipa_cmd *) data;
4055         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4056         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4057         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4058         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4059                 cmd->data.setadapterparms.hdr.return_code);
4060         switch (cmd->data.setadapterparms.hdr.return_code) {
4061         case SET_ACCESS_CTRL_RC_SUCCESS:
4062         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4063         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4064         {
4065                 card->options.isolation = access_ctrl_req->subcmd_code;
4066                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4067                         dev_info(&card->gdev->dev,
4068                             "QDIO data connection isolation is deactivated\n");
4069                 } else {
4070                         dev_info(&card->gdev->dev,
4071                             "QDIO data connection isolation is activated\n");
4072                 }
4073                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
4074                         card->gdev->dev.kobj.name,
4075                         access_ctrl_req->subcmd_code,
4076                         cmd->data.setadapterparms.hdr.return_code);
4077                 break;
4078         }
4079         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4080         {
4081                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4082                         card->gdev->dev.kobj.name,
4083                         access_ctrl_req->subcmd_code,
4084                         cmd->data.setadapterparms.hdr.return_code);
4085                 dev_err(&card->gdev->dev, "Adapter does not "
4086                         "support QDIO data connection isolation\n");
4087
4088                 /* ensure isolation mode is "none" */
4089                 card->options.isolation = ISOLATION_MODE_NONE;
4090                 break;
4091         }
4092         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4093         {
4094                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4095                         card->gdev->dev.kobj.name,
4096                         access_ctrl_req->subcmd_code,
4097                         cmd->data.setadapterparms.hdr.return_code);
4098                 dev_err(&card->gdev->dev,
4099                         "Adapter is dedicated. "
4100                         "QDIO data connection isolation not supported\n");
4101
4102                 /* ensure isolation mode is "none" */
4103                 card->options.isolation = ISOLATION_MODE_NONE;
4104                 break;
4105         }
4106         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4107         {
4108                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4109                         card->gdev->dev.kobj.name,
4110                         access_ctrl_req->subcmd_code,
4111                         cmd->data.setadapterparms.hdr.return_code);
4112                 dev_err(&card->gdev->dev,
4113                         "TSO does not permit QDIO data connection isolation\n");
4114
4115                 /* ensure isolation mode is "none" */
4116                 card->options.isolation = ISOLATION_MODE_NONE;
4117                 break;
4118         }
4119         default:
4120         {
4121                 /* this should never happen */
4122                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
4123                         "==UNKNOWN\n",
4124                         card->gdev->dev.kobj.name,
4125                         access_ctrl_req->subcmd_code,
4126                         cmd->data.setadapterparms.hdr.return_code);
4127
4128                 /* ensure isolation mode is "none" */
4129                 card->options.isolation = ISOLATION_MODE_NONE;
4130                 break;
4131         }
4132         }
4133         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4134         return 0;
4135 }
4136
4137 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4138                 enum qeth_ipa_isolation_modes isolation)
4139 {
4140         int rc;
4141         struct qeth_cmd_buffer *iob;
4142         struct qeth_ipa_cmd *cmd;
4143         struct qeth_set_access_ctrl *access_ctrl_req;
4144
4145         QETH_CARD_TEXT(card, 4, "setacctl");
4146
4147         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4148         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4149
4150         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4151                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4152                                    sizeof(struct qeth_set_access_ctrl));
4153         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4154         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4155         access_ctrl_req->subcmd_code = isolation;
4156
4157         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4158                                NULL);
4159         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4160         return rc;
4161 }
4162
4163 int qeth_set_access_ctrl_online(struct qeth_card *card)
4164 {
4165         int rc = 0;
4166
4167         QETH_CARD_TEXT(card, 4, "setactlo");
4168
4169         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4170              card->info.type == QETH_CARD_TYPE_OSX) &&
4171              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4172                 rc = qeth_setadpparms_set_access_ctrl(card,
4173                         card->options.isolation);
4174                 if (rc) {
4175                         QETH_DBF_MESSAGE(3,
4176                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4177                                 card->gdev->dev.kobj.name,
4178                                 rc);
4179                 }
4180         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4181                 card->options.isolation = ISOLATION_MODE_NONE;
4182
4183                 dev_err(&card->gdev->dev, "Adapter does not "
4184                         "support QDIO data connection isolation\n");
4185                 rc = -EOPNOTSUPP;
4186         }
4187         return rc;
4188 }
4189 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4190
4191 void qeth_tx_timeout(struct net_device *dev)
4192 {
4193         struct qeth_card *card;
4194
4195         card = dev->ml_priv;
4196         QETH_CARD_TEXT(card, 4, "txtimeo");
4197         card->stats.tx_errors++;
4198         qeth_schedule_recovery(card);
4199 }
4200 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4201
4202 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4203 {
4204         struct qeth_card *card = dev->ml_priv;
4205         int rc = 0;
4206
4207         switch (regnum) {
4208         case MII_BMCR: /* Basic mode control register */
4209                 rc = BMCR_FULLDPLX;
4210                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4211                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4212                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4213                         rc |= BMCR_SPEED100;
4214                 break;
4215         case MII_BMSR: /* Basic mode status register */
4216                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4217                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4218                      BMSR_100BASE4;
4219                 break;
4220         case MII_PHYSID1: /* PHYS ID 1 */
4221                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4222                      dev->dev_addr[2];
4223                 rc = (rc >> 5) & 0xFFFF;
4224                 break;
4225         case MII_PHYSID2: /* PHYS ID 2 */
4226                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4227                 break;
4228         case MII_ADVERTISE: /* Advertisement control reg */
4229                 rc = ADVERTISE_ALL;
4230                 break;
4231         case MII_LPA: /* Link partner ability reg */
4232                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4233                      LPA_100BASE4 | LPA_LPACK;
4234                 break;
4235         case MII_EXPANSION: /* Expansion register */
4236                 break;
4237         case MII_DCOUNTER: /* disconnect counter */
4238                 break;
4239         case MII_FCSCOUNTER: /* false carrier counter */
4240                 break;
4241         case MII_NWAYTEST: /* N-way auto-neg test register */
4242                 break;
4243         case MII_RERRCOUNTER: /* rx error counter */
4244                 rc = card->stats.rx_errors;
4245                 break;
4246         case MII_SREVISION: /* silicon revision */
4247                 break;
4248         case MII_RESV1: /* reserved 1 */
4249                 break;
4250         case MII_LBRERROR: /* loopback, rx, bypass error */
4251                 break;
4252         case MII_PHYADDR: /* physical address */
4253                 break;
4254         case MII_RESV2: /* reserved 2 */
4255                 break;
4256         case MII_TPISTATUS: /* TPI status for 10mbps */
4257                 break;
4258         case MII_NCONFIG: /* network interface config */
4259                 break;
4260         default:
4261                 break;
4262         }
4263         return rc;
4264 }
4265 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4266
4267 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4268                 struct qeth_cmd_buffer *iob, int len,
4269                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4270                         unsigned long),
4271                 void *reply_param)
4272 {
4273         u16 s1, s2;
4274
4275         QETH_CARD_TEXT(card, 4, "sendsnmp");
4276
4277         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4278         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4279                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4280         /* adjust PDU length fields in IPA_PDU_HEADER */
4281         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4282         s2 = (u32) len;
4283         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4284         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4285         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4286         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4287         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4288                                       reply_cb, reply_param);
4289 }
4290
4291 static int qeth_snmp_command_cb(struct qeth_card *card,
4292                 struct qeth_reply *reply, unsigned long sdata)
4293 {
4294         struct qeth_ipa_cmd *cmd;
4295         struct qeth_arp_query_info *qinfo;
4296         struct qeth_snmp_cmd *snmp;
4297         unsigned char *data;
4298         __u16 data_len;
4299
4300         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4301
4302         cmd = (struct qeth_ipa_cmd *) sdata;
4303         data = (unsigned char *)((char *)cmd - reply->offset);
4304         qinfo = (struct qeth_arp_query_info *) reply->param;
4305         snmp = &cmd->data.setadapterparms.data.snmp;
4306
4307         if (cmd->hdr.return_code) {
4308                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4309                 return 0;
4310         }
4311         if (cmd->data.setadapterparms.hdr.return_code) {
4312                 cmd->hdr.return_code =
4313                         cmd->data.setadapterparms.hdr.return_code;
4314                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4315                 return 0;
4316         }
4317         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4318         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4319                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4320         else
4321                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4322
4323         /* check if there is enough room in userspace */
4324         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4325                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4326                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4327                 return 0;
4328         }
4329         QETH_CARD_TEXT_(card, 4, "snore%i",
4330                        cmd->data.setadapterparms.hdr.used_total);
4331         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4332                 cmd->data.setadapterparms.hdr.seq_no);
4333         /*copy entries to user buffer*/
4334         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4335                 memcpy(qinfo->udata + qinfo->udata_offset,
4336                        (char *)snmp,
4337                        data_len + offsetof(struct qeth_snmp_cmd, data));
4338                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4339         } else {
4340                 memcpy(qinfo->udata + qinfo->udata_offset,
4341                        (char *)&snmp->request, data_len);
4342         }
4343         qinfo->udata_offset += data_len;
4344         /* check if all replies received ... */
4345                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4346                                cmd->data.setadapterparms.hdr.used_total);
4347                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4348                                cmd->data.setadapterparms.hdr.seq_no);
4349         if (cmd->data.setadapterparms.hdr.seq_no <
4350             cmd->data.setadapterparms.hdr.used_total)
4351                 return 1;
4352         return 0;
4353 }
4354
4355 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4356 {
4357         struct qeth_cmd_buffer *iob;
4358         struct qeth_ipa_cmd *cmd;
4359         struct qeth_snmp_ureq *ureq;
4360         int req_len;
4361         struct qeth_arp_query_info qinfo = {0, };
4362         int rc = 0;
4363
4364         QETH_CARD_TEXT(card, 3, "snmpcmd");
4365
4366         if (card->info.guestlan)
4367                 return -EOPNOTSUPP;
4368
4369         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4370             (!card->options.layer2)) {
4371                 return -EOPNOTSUPP;
4372         }
4373         /* skip 4 bytes (data_len struct member) to get req_len */
4374         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4375                 return -EFAULT;
4376         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4377         if (IS_ERR(ureq)) {
4378                 QETH_CARD_TEXT(card, 2, "snmpnome");
4379                 return PTR_ERR(ureq);
4380         }
4381         qinfo.udata_len = ureq->hdr.data_len;
4382         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4383         if (!qinfo.udata) {
4384                 kfree(ureq);
4385                 return -ENOMEM;
4386         }
4387         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4388
4389         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4390                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4391         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4392         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4393         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4394                                     qeth_snmp_command_cb, (void *)&qinfo);
4395         if (rc)
4396                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4397                            QETH_CARD_IFNAME(card), rc);
4398         else {
4399                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4400                         rc = -EFAULT;
4401         }
4402
4403         kfree(ureq);
4404         kfree(qinfo.udata);
4405         return rc;
4406 }
4407 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4408
4409 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4410                 struct qeth_reply *reply, unsigned long data)
4411 {
4412         struct qeth_ipa_cmd *cmd;
4413         struct qeth_qoat_priv *priv;
4414         char *resdata;
4415         int resdatalen;
4416
4417         QETH_CARD_TEXT(card, 3, "qoatcb");
4418
4419         cmd = (struct qeth_ipa_cmd *)data;
4420         priv = (struct qeth_qoat_priv *)reply->param;
4421         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4422         resdata = (char *)data + 28;
4423
4424         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4425                 cmd->hdr.return_code = IPA_RC_FFFF;
4426                 return 0;
4427         }
4428
4429         memcpy((priv->buffer + priv->response_len), resdata,
4430                 resdatalen);
4431         priv->response_len += resdatalen;
4432
4433         if (cmd->data.setadapterparms.hdr.seq_no <
4434             cmd->data.setadapterparms.hdr.used_total)
4435                 return 1;
4436         return 0;
4437 }
4438
4439 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4440 {
4441         int rc = 0;
4442         struct qeth_cmd_buffer *iob;
4443         struct qeth_ipa_cmd *cmd;
4444         struct qeth_query_oat *oat_req;
4445         struct qeth_query_oat_data oat_data;
4446         struct qeth_qoat_priv priv;
4447         void __user *tmp;
4448
4449         QETH_CARD_TEXT(card, 3, "qoatcmd");
4450
4451         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4452                 rc = -EOPNOTSUPP;
4453                 goto out;
4454         }
4455
4456         if (copy_from_user(&oat_data, udata,
4457             sizeof(struct qeth_query_oat_data))) {
4458                         rc = -EFAULT;
4459                         goto out;
4460         }
4461
4462         priv.buffer_len = oat_data.buffer_len;
4463         priv.response_len = 0;
4464         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4465         if (!priv.buffer) {
4466                 rc = -ENOMEM;
4467                 goto out;
4468         }
4469
4470         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4471                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4472                                    sizeof(struct qeth_query_oat));
4473         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4474         oat_req = &cmd->data.setadapterparms.data.query_oat;
4475         oat_req->subcmd_code = oat_data.command;
4476
4477         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4478                                &priv);
4479         if (!rc) {
4480                 if (is_compat_task())
4481                         tmp = compat_ptr(oat_data.ptr);
4482                 else
4483                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4484
4485                 if (copy_to_user(tmp, priv.buffer,
4486                     priv.response_len)) {
4487                         rc = -EFAULT;
4488                         goto out_free;
4489                 }
4490
4491                 oat_data.response_len = priv.response_len;
4492
4493                 if (copy_to_user(udata, &oat_data,
4494                     sizeof(struct qeth_query_oat_data)))
4495                         rc = -EFAULT;
4496         } else
4497                 if (rc == IPA_RC_FFFF)
4498                         rc = -EFAULT;
4499
4500 out_free:
4501         kfree(priv.buffer);
4502 out:
4503         return rc;
4504 }
4505 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4506
4507 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4508 {
4509         switch (card->info.type) {
4510         case QETH_CARD_TYPE_IQD:
4511                 return 2;
4512         default:
4513                 return 0;
4514         }
4515 }
4516
4517 static void qeth_determine_capabilities(struct qeth_card *card)
4518 {
4519         int rc;
4520         int length;
4521         char *prcd;
4522         struct ccw_device *ddev;
4523         int ddev_offline = 0;
4524
4525         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4526         ddev = CARD_DDEV(card);
4527         if (!ddev->online) {
4528                 ddev_offline = 1;
4529                 rc = ccw_device_set_online(ddev);
4530                 if (rc) {
4531                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4532                         goto out;
4533                 }
4534         }
4535
4536         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4537         if (rc) {
4538                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4539                         dev_name(&card->gdev->dev), rc);
4540                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4541                 goto out_offline;
4542         }
4543         qeth_configure_unitaddr(card, prcd);
4544         if (ddev_offline)
4545                 qeth_configure_blkt_default(card, prcd);
4546         kfree(prcd);
4547
4548         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4549         if (rc)
4550                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4551
4552         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4553         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4554         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4555         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4556         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4557             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4558             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4559                 dev_info(&card->gdev->dev,
4560                         "Completion Queueing supported\n");
4561         } else {
4562                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4563         }
4564
4565
4566 out_offline:
4567         if (ddev_offline == 1)
4568                 ccw_device_set_offline(ddev);
4569 out:
4570         return;
4571 }
4572
4573 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4574         struct qdio_buffer **in_sbal_ptrs,
4575         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4576         int i;
4577
4578         if (card->options.cq == QETH_CQ_ENABLED) {
4579                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4580                              (card->qdio.no_in_queues - 1);
4581                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4582                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4583                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4584                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4585                 }
4586
4587                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4588         }
4589 }
4590
4591 static int qeth_qdio_establish(struct qeth_card *card)
4592 {
4593         struct qdio_initialize init_data;
4594         char *qib_param_field;
4595         struct qdio_buffer **in_sbal_ptrs;
4596         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4597         struct qdio_buffer **out_sbal_ptrs;
4598         int i, j, k;
4599         int rc = 0;
4600
4601         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4602
4603         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4604                               GFP_KERNEL);
4605         if (!qib_param_field) {
4606                 rc =  -ENOMEM;
4607                 goto out_free_nothing;
4608         }
4609
4610         qeth_create_qib_param_field(card, qib_param_field);
4611         qeth_create_qib_param_field_blkt(card, qib_param_field);
4612
4613         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4614                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4615                                GFP_KERNEL);
4616         if (!in_sbal_ptrs) {
4617                 rc = -ENOMEM;
4618                 goto out_free_qib_param;
4619         }
4620         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4621                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4622                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4623         }
4624
4625         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4626                                    GFP_KERNEL);
4627         if (!queue_start_poll) {
4628                 rc = -ENOMEM;
4629                 goto out_free_in_sbals;
4630         }
4631         for (i = 0; i < card->qdio.no_in_queues; ++i)
4632                 queue_start_poll[i] = card->discipline.start_poll;
4633
4634         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4635
4636         out_sbal_ptrs =
4637                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4638                         sizeof(void *), GFP_KERNEL);
4639         if (!out_sbal_ptrs) {
4640                 rc = -ENOMEM;
4641                 goto out_free_queue_start_poll;
4642         }
4643         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4644                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4645                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4646                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4647                 }
4648
4649         memset(&init_data, 0, sizeof(struct qdio_initialize));
4650         init_data.cdev                   = CARD_DDEV(card);
4651         init_data.q_format               = qeth_get_qdio_q_format(card);
4652         init_data.qib_param_field_format = 0;
4653         init_data.qib_param_field        = qib_param_field;
4654         init_data.no_input_qs            = card->qdio.no_in_queues;
4655         init_data.no_output_qs           = card->qdio.no_out_queues;
4656         init_data.input_handler          = card->discipline.input_handler;
4657         init_data.output_handler         = card->discipline.output_handler;
4658         init_data.queue_start_poll_array = queue_start_poll;
4659         init_data.int_parm               = (unsigned long) card;
4660         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4661         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4662         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4663         init_data.scan_threshold =
4664                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4665
4666         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4667                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4668                 rc = qdio_allocate(&init_data);
4669                 if (rc) {
4670                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4671                         goto out;
4672                 }
4673                 rc = qdio_establish(&init_data);
4674                 if (rc) {
4675                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4676                         qdio_free(CARD_DDEV(card));
4677                 }
4678         }
4679
4680         switch (card->options.cq) {
4681         case QETH_CQ_ENABLED:
4682                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4683                 break;
4684         case QETH_CQ_DISABLED:
4685                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4686                 break;
4687         default:
4688                 break;
4689         }
4690 out:
4691         kfree(out_sbal_ptrs);
4692 out_free_queue_start_poll:
4693         kfree(queue_start_poll);
4694 out_free_in_sbals:
4695         kfree(in_sbal_ptrs);
4696 out_free_qib_param:
4697         kfree(qib_param_field);
4698 out_free_nothing:
4699         return rc;
4700 }
4701
4702 static void qeth_core_free_card(struct qeth_card *card)
4703 {
4704
4705         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4706         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4707         qeth_clean_channel(&card->read);
4708         qeth_clean_channel(&card->write);
4709         if (card->dev)
4710                 free_netdev(card->dev);
4711         kfree(card->ip_tbd_list);
4712         qeth_free_qdio_buffers(card);
4713         unregister_service_level(&card->qeth_service_level);
4714         kfree(card);
4715 }
4716
4717 static struct ccw_device_id qeth_ids[] = {
4718         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4719                                         .driver_info = QETH_CARD_TYPE_OSD},
4720         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4721                                         .driver_info = QETH_CARD_TYPE_IQD},
4722         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4723                                         .driver_info = QETH_CARD_TYPE_OSN},
4724         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4725                                         .driver_info = QETH_CARD_TYPE_OSM},
4726         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4727                                         .driver_info = QETH_CARD_TYPE_OSX},
4728         {},
4729 };
4730 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4731
4732 static struct ccw_driver qeth_ccw_driver = {
4733         .driver = {
4734                 .owner = THIS_MODULE,
4735                 .name = "qeth",
4736         },
4737         .ids = qeth_ids,
4738         .probe = ccwgroup_probe_ccwdev,
4739         .remove = ccwgroup_remove_ccwdev,
4740 };
4741
4742 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4743                                 unsigned long driver_id)
4744 {
4745         return ccwgroup_create_from_string(root_dev, driver_id,
4746                                            &qeth_ccw_driver, 3, buf);
4747 }
4748
4749 int qeth_core_hardsetup_card(struct qeth_card *card)
4750 {
4751         int retries = 0;
4752         int rc;
4753
4754         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4755         atomic_set(&card->force_alloc_skb, 0);
4756         qeth_get_channel_path_desc(card);
4757 retry:
4758         if (retries)
4759                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4760                         dev_name(&card->gdev->dev));
4761         ccw_device_set_offline(CARD_DDEV(card));
4762         ccw_device_set_offline(CARD_WDEV(card));
4763         ccw_device_set_offline(CARD_RDEV(card));
4764         rc = ccw_device_set_online(CARD_RDEV(card));
4765         if (rc)
4766                 goto retriable;
4767         rc = ccw_device_set_online(CARD_WDEV(card));
4768         if (rc)
4769                 goto retriable;
4770         rc = ccw_device_set_online(CARD_DDEV(card));
4771         if (rc)
4772                 goto retriable;
4773         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4774 retriable:
4775         if (rc == -ERESTARTSYS) {
4776                 QETH_DBF_TEXT(SETUP, 2, "break1");
4777                 return rc;
4778         } else if (rc) {
4779                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4780                 if (++retries > 3)
4781                         goto out;
4782                 else
4783                         goto retry;
4784         }
4785         qeth_determine_capabilities(card);
4786         qeth_init_tokens(card);
4787         qeth_init_func_level(card);
4788         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4789         if (rc == -ERESTARTSYS) {
4790                 QETH_DBF_TEXT(SETUP, 2, "break2");
4791                 return rc;
4792         } else if (rc) {
4793                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4794                 if (--retries < 0)
4795                         goto out;
4796                 else
4797                         goto retry;
4798         }
4799         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4800         if (rc == -ERESTARTSYS) {
4801                 QETH_DBF_TEXT(SETUP, 2, "break3");
4802                 return rc;
4803         } else if (rc) {
4804                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4805                 if (--retries < 0)
4806                         goto out;
4807                 else
4808                         goto retry;
4809         }
4810         card->read_or_write_problem = 0;
4811         rc = qeth_mpc_initialize(card);
4812         if (rc) {
4813                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4814                 goto out;
4815         }
4816
4817         card->options.ipa4.supported_funcs = 0;
4818         card->options.adp.supported_funcs = 0;
4819         card->info.diagass_support = 0;
4820         qeth_query_ipassists(card, QETH_PROT_IPV4);
4821         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4822                 qeth_query_setadapterparms(card);
4823         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4824                 qeth_query_setdiagass(card);
4825         return 0;
4826 out:
4827         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4828                 "an error on the device\n");
4829         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4830                 dev_name(&card->gdev->dev), rc);
4831         return rc;
4832 }
4833 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4834
4835 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4836                 struct qdio_buffer_element *element,
4837                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4838 {
4839         struct page *page = virt_to_page(element->addr);
4840         if (*pskb == NULL) {
4841                 if (qethbuffer->rx_skb) {
4842                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4843                         *pskb = qethbuffer->rx_skb;
4844                         qethbuffer->rx_skb = NULL;
4845                 } else {
4846                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4847                         if (!(*pskb))
4848                                 return -ENOMEM;
4849                 }
4850
4851                 skb_reserve(*pskb, ETH_HLEN);
4852                 if (data_len <= QETH_RX_PULL_LEN) {
4853                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4854                                 data_len);
4855                 } else {
4856                         get_page(page);
4857                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4858                                element->addr + offset, QETH_RX_PULL_LEN);
4859                         skb_fill_page_desc(*pskb, *pfrag, page,
4860                                 offset + QETH_RX_PULL_LEN,
4861                                 data_len - QETH_RX_PULL_LEN);
4862                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4863                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4864                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4865                         (*pfrag)++;
4866                 }
4867         } else {
4868                 get_page(page);
4869                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4870                 (*pskb)->data_len += data_len;
4871                 (*pskb)->len      += data_len;
4872                 (*pskb)->truesize += data_len;
4873                 (*pfrag)++;
4874         }
4875
4876
4877         return 0;
4878 }
4879
4880 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4881                 struct qeth_qdio_buffer *qethbuffer,
4882                 struct qdio_buffer_element **__element, int *__offset,
4883                 struct qeth_hdr **hdr)
4884 {
4885         struct qdio_buffer_element *element = *__element;
4886         struct qdio_buffer *buffer = qethbuffer->buffer;
4887         int offset = *__offset;
4888         struct sk_buff *skb = NULL;
4889         int skb_len = 0;
4890         void *data_ptr;
4891         int data_len;
4892         int headroom = 0;
4893         int use_rx_sg = 0;
4894         int frag = 0;
4895
4896         /* qeth_hdr must not cross element boundaries */
4897         if (element->length < offset + sizeof(struct qeth_hdr)) {
4898                 if (qeth_is_last_sbale(element))
4899                         return NULL;
4900                 element++;
4901                 offset = 0;
4902                 if (element->length < sizeof(struct qeth_hdr))
4903                         return NULL;
4904         }
4905         *hdr = element->addr + offset;
4906
4907         offset += sizeof(struct qeth_hdr);
4908         switch ((*hdr)->hdr.l2.id) {
4909         case QETH_HEADER_TYPE_LAYER2:
4910                 skb_len = (*hdr)->hdr.l2.pkt_length;
4911                 break;
4912         case QETH_HEADER_TYPE_LAYER3:
4913                 skb_len = (*hdr)->hdr.l3.length;
4914                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4915                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4916                         headroom = TR_HLEN;
4917                 else
4918                         headroom = ETH_HLEN;
4919                 break;
4920         case QETH_HEADER_TYPE_OSN:
4921                 skb_len = (*hdr)->hdr.osn.pdu_length;
4922                 headroom = sizeof(struct qeth_hdr);
4923                 break;
4924         default:
4925                 break;
4926         }
4927
4928         if (!skb_len)
4929                 return NULL;
4930
4931         if (((skb_len >= card->options.rx_sg_cb) &&
4932              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4933              (!atomic_read(&card->force_alloc_skb))) ||
4934             (card->options.cq == QETH_CQ_ENABLED)) {
4935                 use_rx_sg = 1;
4936         } else {
4937                 skb = dev_alloc_skb(skb_len + headroom);
4938                 if (!skb)
4939                         goto no_mem;
4940                 if (headroom)
4941                         skb_reserve(skb, headroom);
4942         }
4943
4944         data_ptr = element->addr + offset;
4945         while (skb_len) {
4946                 data_len = min(skb_len, (int)(element->length - offset));
4947                 if (data_len) {
4948                         if (use_rx_sg) {
4949                                 if (qeth_create_skb_frag(qethbuffer, element,
4950                                     &skb, offset, &frag, data_len))
4951                                         goto no_mem;
4952                         } else {
4953                                 memcpy(skb_put(skb, data_len), data_ptr,
4954                                         data_len);
4955                         }
4956                 }
4957                 skb_len -= data_len;
4958                 if (skb_len) {
4959                         if (qeth_is_last_sbale(element)) {
4960                                 QETH_CARD_TEXT(card, 4, "unexeob");
4961                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4962                                 dev_kfree_skb_any(skb);
4963                                 card->stats.rx_errors++;
4964                                 return NULL;
4965                         }
4966                         element++;
4967                         offset = 0;
4968                         data_ptr = element->addr;
4969                 } else {
4970                         offset += data_len;
4971                 }
4972         }
4973         *__element = element;
4974         *__offset = offset;
4975         if (use_rx_sg && card->options.performance_stats) {
4976                 card->perf_stats.sg_skbs_rx++;
4977                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4978         }
4979         return skb;
4980 no_mem:
4981         if (net_ratelimit()) {
4982                 QETH_CARD_TEXT(card, 2, "noskbmem");
4983         }
4984         card->stats.rx_dropped++;
4985         return NULL;
4986 }
4987 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4988
4989 static void qeth_unregister_dbf_views(void)
4990 {
4991         int x;
4992         for (x = 0; x < QETH_DBF_INFOS; x++) {
4993                 debug_unregister(qeth_dbf[x].id);
4994                 qeth_dbf[x].id = NULL;
4995         }
4996 }
4997
4998 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4999 {
5000         char dbf_txt_buf[32];
5001         va_list args;
5002
5003         if (level > id->level)
5004                 return;
5005         va_start(args, fmt);
5006         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5007         va_end(args);
5008         debug_text_event(id, level, dbf_txt_buf);
5009 }
5010 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5011
5012 static int qeth_register_dbf_views(void)
5013 {
5014         int ret;
5015         int x;
5016
5017         for (x = 0; x < QETH_DBF_INFOS; x++) {
5018                 /* register the areas */
5019                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5020                                                 qeth_dbf[x].pages,
5021                                                 qeth_dbf[x].areas,
5022                                                 qeth_dbf[x].len);
5023                 if (qeth_dbf[x].id == NULL) {
5024                         qeth_unregister_dbf_views();
5025                         return -ENOMEM;
5026                 }
5027
5028                 /* register a view */
5029                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5030                 if (ret) {
5031                         qeth_unregister_dbf_views();
5032                         return ret;
5033                 }
5034
5035                 /* set a passing level */
5036                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5037         }
5038
5039         return 0;
5040 }
5041
5042 int qeth_core_load_discipline(struct qeth_card *card,
5043                 enum qeth_discipline_id discipline)
5044 {
5045         int rc = 0;
5046         mutex_lock(&qeth_mod_mutex);
5047         switch (discipline) {
5048         case QETH_DISCIPLINE_LAYER3:
5049                 card->discipline.ccwgdriver = try_then_request_module(
5050                         symbol_get(qeth_l3_ccwgroup_driver),
5051                         "qeth_l3");
5052                 break;
5053         case QETH_DISCIPLINE_LAYER2:
5054                 card->discipline.ccwgdriver = try_then_request_module(
5055                         symbol_get(qeth_l2_ccwgroup_driver),
5056                         "qeth_l2");
5057                 break;
5058         }
5059         if (!card->discipline.ccwgdriver) {
5060                 dev_err(&card->gdev->dev, "There is no kernel module to "
5061                         "support discipline %d\n", discipline);
5062                 rc = -EINVAL;
5063         }
5064         mutex_unlock(&qeth_mod_mutex);
5065         return rc;
5066 }
5067
5068 void qeth_core_free_discipline(struct qeth_card *card)
5069 {
5070         if (card->options.layer2)
5071                 symbol_put(qeth_l2_ccwgroup_driver);
5072         else
5073                 symbol_put(qeth_l3_ccwgroup_driver);
5074         card->discipline.ccwgdriver = NULL;
5075 }
5076
5077 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5078 {
5079         struct qeth_card *card;
5080         struct device *dev;
5081         int rc;
5082         unsigned long flags;
5083         char dbf_name[20];
5084
5085         QETH_DBF_TEXT(SETUP, 2, "probedev");
5086
5087         dev = &gdev->dev;
5088         if (!get_device(dev))
5089                 return -ENODEV;
5090
5091         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5092
5093         card = qeth_alloc_card();
5094         if (!card) {
5095                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5096                 rc = -ENOMEM;
5097                 goto err_dev;
5098         }
5099
5100         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5101                 dev_name(&gdev->dev));
5102         card->debug = debug_register(dbf_name, 2, 1, 8);
5103         if (!card->debug) {
5104                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5105                 rc = -ENOMEM;
5106                 goto err_card;
5107         }
5108         debug_register_view(card->debug, &debug_hex_ascii_view);
5109
5110         card->read.ccwdev  = gdev->cdev[0];
5111         card->write.ccwdev = gdev->cdev[1];
5112         card->data.ccwdev  = gdev->cdev[2];
5113         dev_set_drvdata(&gdev->dev, card);
5114         card->gdev = gdev;
5115         gdev->cdev[0]->handler = qeth_irq;
5116         gdev->cdev[1]->handler = qeth_irq;
5117         gdev->cdev[2]->handler = qeth_irq;
5118
5119         rc = qeth_determine_card_type(card);
5120         if (rc) {
5121                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5122                 goto err_dbf;
5123         }
5124         rc = qeth_setup_card(card);
5125         if (rc) {
5126                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5127                 goto err_dbf;
5128         }
5129
5130         if (card->info.type == QETH_CARD_TYPE_OSN)
5131                 rc = qeth_core_create_osn_attributes(dev);
5132         else
5133                 rc = qeth_core_create_device_attributes(dev);
5134         if (rc)
5135                 goto err_dbf;
5136         switch (card->info.type) {
5137         case QETH_CARD_TYPE_OSN:
5138         case QETH_CARD_TYPE_OSM:
5139                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5140                 if (rc)
5141                         goto err_attr;
5142                 rc = card->discipline.ccwgdriver->probe(card->gdev);
5143                 if (rc)
5144                         goto err_disc;
5145         case QETH_CARD_TYPE_OSD:
5146         case QETH_CARD_TYPE_OSX:
5147         default:
5148                 break;
5149         }
5150
5151         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5152         list_add_tail(&card->list, &qeth_core_card_list.list);
5153         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5154
5155         qeth_determine_capabilities(card);
5156         return 0;
5157
5158 err_disc:
5159         qeth_core_free_discipline(card);
5160 err_attr:
5161         if (card->info.type == QETH_CARD_TYPE_OSN)
5162                 qeth_core_remove_osn_attributes(dev);
5163         else
5164                 qeth_core_remove_device_attributes(dev);
5165 err_dbf:
5166         debug_unregister(card->debug);
5167 err_card:
5168         qeth_core_free_card(card);
5169 err_dev:
5170         put_device(dev);
5171         return rc;
5172 }
5173
5174 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5175 {
5176         unsigned long flags;
5177         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5178
5179         QETH_DBF_TEXT(SETUP, 2, "removedv");
5180
5181         if (card->info.type == QETH_CARD_TYPE_OSN) {
5182                 qeth_core_remove_osn_attributes(&gdev->dev);
5183         } else {
5184                 qeth_core_remove_device_attributes(&gdev->dev);
5185         }
5186
5187         if (card->discipline.ccwgdriver) {
5188                 card->discipline.ccwgdriver->remove(gdev);
5189                 qeth_core_free_discipline(card);
5190         }
5191
5192         debug_unregister(card->debug);
5193         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5194         list_del(&card->list);
5195         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5196         qeth_core_free_card(card);
5197         dev_set_drvdata(&gdev->dev, NULL);
5198         put_device(&gdev->dev);
5199         return;
5200 }
5201
5202 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5203 {
5204         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5205         int rc = 0;
5206         int def_discipline;
5207
5208         if (!card->discipline.ccwgdriver) {
5209                 if (card->info.type == QETH_CARD_TYPE_IQD)
5210                         def_discipline = QETH_DISCIPLINE_LAYER3;
5211                 else
5212                         def_discipline = QETH_DISCIPLINE_LAYER2;
5213                 rc = qeth_core_load_discipline(card, def_discipline);
5214                 if (rc)
5215                         goto err;
5216                 rc = card->discipline.ccwgdriver->probe(card->gdev);
5217                 if (rc)
5218                         goto err;
5219         }
5220         rc = card->discipline.ccwgdriver->set_online(gdev);
5221 err:
5222         return rc;
5223 }
5224
5225 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5226 {
5227         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5228         return card->discipline.ccwgdriver->set_offline(gdev);
5229 }
5230
5231 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5232 {
5233         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5234         if (card->discipline.ccwgdriver &&
5235             card->discipline.ccwgdriver->shutdown)
5236                 card->discipline.ccwgdriver->shutdown(gdev);
5237 }
5238
5239 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5240 {
5241         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5242         if (card->discipline.ccwgdriver &&
5243             card->discipline.ccwgdriver->prepare)
5244                 return card->discipline.ccwgdriver->prepare(gdev);
5245         return 0;
5246 }
5247
5248 static void qeth_core_complete(struct ccwgroup_device *gdev)
5249 {
5250         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5251         if (card->discipline.ccwgdriver &&
5252             card->discipline.ccwgdriver->complete)
5253                 card->discipline.ccwgdriver->complete(gdev);
5254 }
5255
5256 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5257 {
5258         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5259         if (card->discipline.ccwgdriver &&
5260             card->discipline.ccwgdriver->freeze)
5261                 return card->discipline.ccwgdriver->freeze(gdev);
5262         return 0;
5263 }
5264
5265 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5266 {
5267         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5268         if (card->discipline.ccwgdriver &&
5269             card->discipline.ccwgdriver->thaw)
5270                 return card->discipline.ccwgdriver->thaw(gdev);
5271         return 0;
5272 }
5273
5274 static int qeth_core_restore(struct ccwgroup_device *gdev)
5275 {
5276         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5277         if (card->discipline.ccwgdriver &&
5278             card->discipline.ccwgdriver->restore)
5279                 return card->discipline.ccwgdriver->restore(gdev);
5280         return 0;
5281 }
5282
5283 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5284         .driver = {
5285                 .owner = THIS_MODULE,
5286                 .name = "qeth",
5287         },
5288         .driver_id = 0xD8C5E3C8,
5289         .probe = qeth_core_probe_device,
5290         .remove = qeth_core_remove_device,
5291         .set_online = qeth_core_set_online,
5292         .set_offline = qeth_core_set_offline,
5293         .shutdown = qeth_core_shutdown,
5294         .prepare = qeth_core_prepare,
5295         .complete = qeth_core_complete,
5296         .freeze = qeth_core_freeze,
5297         .thaw = qeth_core_thaw,
5298         .restore = qeth_core_restore,
5299 };
5300
5301 static ssize_t
5302 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
5303                            size_t count)
5304 {
5305         int err;
5306         err = qeth_core_driver_group(buf, qeth_core_root_dev,
5307                                         qeth_core_ccwgroup_driver.driver_id);
5308         if (err)
5309                 return err;
5310         else
5311                 return count;
5312 }
5313
5314 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5315
5316 static struct {
5317         const char str[ETH_GSTRING_LEN];
5318 } qeth_ethtool_stats_keys[] = {
5319 /*  0 */{"rx skbs"},
5320         {"rx buffers"},
5321         {"tx skbs"},
5322         {"tx buffers"},
5323         {"tx skbs no packing"},
5324         {"tx buffers no packing"},
5325         {"tx skbs packing"},
5326         {"tx buffers packing"},
5327         {"tx sg skbs"},
5328         {"tx sg frags"},
5329 /* 10 */{"rx sg skbs"},
5330         {"rx sg frags"},
5331         {"rx sg page allocs"},
5332         {"tx large kbytes"},
5333         {"tx large count"},
5334         {"tx pk state ch n->p"},
5335         {"tx pk state ch p->n"},
5336         {"tx pk watermark low"},
5337         {"tx pk watermark high"},
5338         {"queue 0 buffer usage"},
5339 /* 20 */{"queue 1 buffer usage"},
5340         {"queue 2 buffer usage"},
5341         {"queue 3 buffer usage"},
5342         {"rx poll time"},
5343         {"rx poll count"},
5344         {"rx do_QDIO time"},
5345         {"rx do_QDIO count"},
5346         {"tx handler time"},
5347         {"tx handler count"},
5348         {"tx time"},
5349 /* 30 */{"tx count"},
5350         {"tx do_QDIO time"},
5351         {"tx do_QDIO count"},
5352         {"tx csum"},
5353         {"tx lin"},
5354         {"cq handler count"},
5355         {"cq handler time"}
5356 };
5357
5358 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5359 {
5360         switch (stringset) {
5361         case ETH_SS_STATS:
5362                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5363         default:
5364                 return -EINVAL;
5365         }
5366 }
5367 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5368
5369 void qeth_core_get_ethtool_stats(struct net_device *dev,
5370                 struct ethtool_stats *stats, u64 *data)
5371 {
5372         struct qeth_card *card = dev->ml_priv;
5373         data[0] = card->stats.rx_packets -
5374                                 card->perf_stats.initial_rx_packets;
5375         data[1] = card->perf_stats.bufs_rec;
5376         data[2] = card->stats.tx_packets -
5377                                 card->perf_stats.initial_tx_packets;
5378         data[3] = card->perf_stats.bufs_sent;
5379         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5380                         - card->perf_stats.skbs_sent_pack;
5381         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5382         data[6] = card->perf_stats.skbs_sent_pack;
5383         data[7] = card->perf_stats.bufs_sent_pack;
5384         data[8] = card->perf_stats.sg_skbs_sent;
5385         data[9] = card->perf_stats.sg_frags_sent;
5386         data[10] = card->perf_stats.sg_skbs_rx;
5387         data[11] = card->perf_stats.sg_frags_rx;
5388         data[12] = card->perf_stats.sg_alloc_page_rx;
5389         data[13] = (card->perf_stats.large_send_bytes >> 10);
5390         data[14] = card->perf_stats.large_send_cnt;
5391         data[15] = card->perf_stats.sc_dp_p;
5392         data[16] = card->perf_stats.sc_p_dp;
5393         data[17] = QETH_LOW_WATERMARK_PACK;
5394         data[18] = QETH_HIGH_WATERMARK_PACK;
5395         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5396         data[20] = (card->qdio.no_out_queues > 1) ?
5397                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5398         data[21] = (card->qdio.no_out_queues > 2) ?
5399                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5400         data[22] = (card->qdio.no_out_queues > 3) ?
5401                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5402         data[23] = card->perf_stats.inbound_time;
5403         data[24] = card->perf_stats.inbound_cnt;
5404         data[25] = card->perf_stats.inbound_do_qdio_time;
5405         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5406         data[27] = card->perf_stats.outbound_handler_time;
5407         data[28] = card->perf_stats.outbound_handler_cnt;
5408         data[29] = card->perf_stats.outbound_time;
5409         data[30] = card->perf_stats.outbound_cnt;
5410         data[31] = card->perf_stats.outbound_do_qdio_time;
5411         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5412         data[33] = card->perf_stats.tx_csum;
5413         data[34] = card->perf_stats.tx_lin;
5414         data[35] = card->perf_stats.cq_cnt;
5415         data[36] = card->perf_stats.cq_time;
5416 }
5417 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5418
5419 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5420 {
5421         switch (stringset) {
5422         case ETH_SS_STATS:
5423                 memcpy(data, &qeth_ethtool_stats_keys,
5424                         sizeof(qeth_ethtool_stats_keys));
5425                 break;
5426         default:
5427                 WARN_ON(1);
5428                 break;
5429         }
5430 }
5431 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5432
5433 void qeth_core_get_drvinfo(struct net_device *dev,
5434                 struct ethtool_drvinfo *info)
5435 {
5436         struct qeth_card *card = dev->ml_priv;
5437         if (card->options.layer2)
5438                 strcpy(info->driver, "qeth_l2");
5439         else
5440                 strcpy(info->driver, "qeth_l3");
5441
5442         strcpy(info->version, "1.0");
5443         strcpy(info->fw_version, card->info.mcl_level);
5444         sprintf(info->bus_info, "%s/%s/%s",
5445                         CARD_RDEV_ID(card),
5446                         CARD_WDEV_ID(card),
5447                         CARD_DDEV_ID(card));
5448 }
5449 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5450
5451 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5452                                         struct ethtool_cmd *ecmd)
5453 {
5454         struct qeth_card *card = netdev->ml_priv;
5455         enum qeth_link_types link_type;
5456
5457         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5458                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5459         else
5460                 link_type = card->info.link_type;
5461
5462         ecmd->transceiver = XCVR_INTERNAL;
5463         ecmd->supported = SUPPORTED_Autoneg;
5464         ecmd->advertising = ADVERTISED_Autoneg;
5465         ecmd->duplex = DUPLEX_FULL;
5466         ecmd->autoneg = AUTONEG_ENABLE;
5467
5468         switch (link_type) {
5469         case QETH_LINK_TYPE_FAST_ETH:
5470         case QETH_LINK_TYPE_LANE_ETH100:
5471                 ecmd->supported |= SUPPORTED_10baseT_Half |
5472                                         SUPPORTED_10baseT_Full |
5473                                         SUPPORTED_100baseT_Half |
5474                                         SUPPORTED_100baseT_Full |
5475                                         SUPPORTED_TP;
5476                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5477                                         ADVERTISED_10baseT_Full |
5478                                         ADVERTISED_100baseT_Half |
5479                                         ADVERTISED_100baseT_Full |
5480                                         ADVERTISED_TP;
5481                 ecmd->speed = SPEED_100;
5482                 ecmd->port = PORT_TP;
5483                 break;
5484
5485         case QETH_LINK_TYPE_GBIT_ETH:
5486         case QETH_LINK_TYPE_LANE_ETH1000:
5487                 ecmd->supported |= SUPPORTED_10baseT_Half |
5488                                         SUPPORTED_10baseT_Full |
5489                                         SUPPORTED_100baseT_Half |
5490                                         SUPPORTED_100baseT_Full |
5491                                         SUPPORTED_1000baseT_Half |
5492                                         SUPPORTED_1000baseT_Full |
5493                                         SUPPORTED_FIBRE;
5494                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5495                                         ADVERTISED_10baseT_Full |
5496                                         ADVERTISED_100baseT_Half |
5497                                         ADVERTISED_100baseT_Full |
5498                                         ADVERTISED_1000baseT_Half |
5499                                         ADVERTISED_1000baseT_Full |
5500                                         ADVERTISED_FIBRE;
5501                 ecmd->speed = SPEED_1000;
5502                 ecmd->port = PORT_FIBRE;
5503                 break;
5504
5505         case QETH_LINK_TYPE_10GBIT_ETH:
5506                 ecmd->supported |= SUPPORTED_10baseT_Half |
5507                                         SUPPORTED_10baseT_Full |
5508                                         SUPPORTED_100baseT_Half |
5509                                         SUPPORTED_100baseT_Full |
5510                                         SUPPORTED_1000baseT_Half |
5511                                         SUPPORTED_1000baseT_Full |
5512                                         SUPPORTED_10000baseT_Full |
5513                                         SUPPORTED_FIBRE;
5514                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5515                                         ADVERTISED_10baseT_Full |
5516                                         ADVERTISED_100baseT_Half |
5517                                         ADVERTISED_100baseT_Full |
5518                                         ADVERTISED_1000baseT_Half |
5519                                         ADVERTISED_1000baseT_Full |
5520                                         ADVERTISED_10000baseT_Full |
5521                                         ADVERTISED_FIBRE;
5522                 ecmd->speed = SPEED_10000;
5523                 ecmd->port = PORT_FIBRE;
5524                 break;
5525
5526         default:
5527                 ecmd->supported |= SUPPORTED_10baseT_Half |
5528                                         SUPPORTED_10baseT_Full |
5529                                         SUPPORTED_TP;
5530                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5531                                         ADVERTISED_10baseT_Full |
5532                                         ADVERTISED_TP;
5533                 ecmd->speed = SPEED_10;
5534                 ecmd->port = PORT_TP;
5535         }
5536
5537         return 0;
5538 }
5539 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5540
5541 static int __init qeth_core_init(void)
5542 {
5543         int rc;
5544
5545         pr_info("loading core functions\n");
5546         INIT_LIST_HEAD(&qeth_core_card_list.list);
5547         rwlock_init(&qeth_core_card_list.rwlock);
5548         mutex_init(&qeth_mod_mutex);
5549
5550         rc = qeth_register_dbf_views();
5551         if (rc)
5552                 goto out_err;
5553         rc = ccw_driver_register(&qeth_ccw_driver);
5554         if (rc)
5555                 goto ccw_err;
5556         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5557         if (rc)
5558                 goto ccwgroup_err;
5559         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
5560                                 &driver_attr_group);
5561         if (rc)
5562                 goto driver_err;
5563         qeth_core_root_dev = root_device_register("qeth");
5564         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5565         if (rc)
5566                 goto register_err;
5567
5568         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5569                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5570         if (!qeth_core_header_cache) {
5571                 rc = -ENOMEM;
5572                 goto slab_err;
5573         }
5574
5575         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5576                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5577         if (!qeth_qdio_outbuf_cache) {
5578                 rc = -ENOMEM;
5579                 goto cqslab_err;
5580         }
5581
5582         return 0;
5583 cqslab_err:
5584         kmem_cache_destroy(qeth_core_header_cache);
5585 slab_err:
5586         root_device_unregister(qeth_core_root_dev);
5587 register_err:
5588         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
5589                            &driver_attr_group);
5590 driver_err:
5591         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5592 ccwgroup_err:
5593         ccw_driver_unregister(&qeth_ccw_driver);
5594 ccw_err:
5595         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
5596         qeth_unregister_dbf_views();
5597 out_err:
5598         pr_err("Initializing the qeth device driver failed\n");
5599         return rc;
5600 }
5601
5602 static void __exit qeth_core_exit(void)
5603 {
5604         root_device_unregister(qeth_core_root_dev);
5605         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
5606                            &driver_attr_group);
5607         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5608         ccw_driver_unregister(&qeth_ccw_driver);
5609         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5610         kmem_cache_destroy(qeth_core_header_cache);
5611         qeth_unregister_dbf_views();
5612         pr_info("core functions removed\n");
5613 }
5614
5615 module_init(qeth_core_init);
5616 module_exit(qeth_core_exit);
5617 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5618 MODULE_DESCRIPTION("qeth core functions");
5619 MODULE_LICENSE("GPL");