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