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         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 885                 schedule_work(&card->kernel_thread_starter);
 886 }
 887 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 888
 889 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 890 {
 891         int dstat, cstat;
 892         char *sense;
 893         struct qeth_card *card;
 894
 895         sense = (char *) irb->ecw;
 896         cstat = irb->scsw.cmd.cstat;
 897         dstat = irb->scsw.cmd.dstat;
 898         card = CARD_FROM_CDEV(cdev);
 899
 900         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 901                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 902                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 903                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 904                 dev_warn(&cdev->dev, "The qeth device driver "
 905                         "failed to recover an error on the device\n");
 906                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 907                         dev_name(&cdev->dev), dstat, cstat);
 908                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 909                                 16, 1, irb, 64, 1);
 910                 return 1;
 911         }
 912
 913         if (dstat & DEV_STAT_UNIT_CHECK) {
 914                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 915                     SENSE_RESETTING_EVENT_FLAG) {
 916                         QETH_CARD_TEXT(card, 2, "REVIND");
 917                         return 1;
 918                 }
 919                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 920                     SENSE_COMMAND_REJECT_FLAG) {
 921                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 922                         return 1;
 923                 }
 924                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 925                         QETH_CARD_TEXT(card, 2, "AFFE");
 926                         return 1;
 927                 }
 928                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 929                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 930                         return 0;
 931                 }
 932                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 933                         return 1;
 934         }
 935         return 0;
 936 }
 937
 938 static long __qeth_check_irb_error(struct ccw_device *cdev,
 939                 unsigned long intparm, struct irb *irb)
 940 {
 941         struct qeth_card *card;
 942
 943         card = CARD_FROM_CDEV(cdev);
 944
 945         if (!IS_ERR(irb))
 946                 return 0;
 947
 948         switch (PTR_ERR(irb)) {
 949         case -EIO:
 950                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 951                         dev_name(&cdev->dev));
 952                 QETH_CARD_TEXT(card, 2, "ckirberr");
 953                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 954                 break;
 955         case -ETIMEDOUT:
 956                 dev_warn(&cdev->dev, "A hardware operation timed out"
 957                         " on the device\n");
 958                 QETH_CARD_TEXT(card, 2, "ckirberr");
 959                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 960                 if (intparm == QETH_RCD_PARM) {
 961                         if (card && (card->data.ccwdev == cdev)) {
 962                                 card->data.state = CH_STATE_DOWN;
 963                                 wake_up(&card->wait_q);
 964                         }
 965                 }
 966                 break;
 967         default:
 968                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 969                         dev_name(&cdev->dev), PTR_ERR(irb));
 970                 QETH_CARD_TEXT(card, 2, "ckirberr");
 971                 QETH_CARD_TEXT(card, 2, "  rc???");
 972         }
 973         return PTR_ERR(irb);
 974 }
 975
 976 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 977                 struct irb *irb)
 978 {
 979         int rc;
 980         int cstat, dstat;
 981         struct qeth_cmd_buffer *buffer;
 982         struct qeth_channel *channel;
 983         struct qeth_card *card;
 984         struct qeth_cmd_buffer *iob;
 985         __u8 index;
 986
 987         if (__qeth_check_irb_error(cdev, intparm, irb))
 988                 return;
 989         cstat = irb->scsw.cmd.cstat;
 990         dstat = irb->scsw.cmd.dstat;
 991
 992         card = CARD_FROM_CDEV(cdev);
 993         if (!card)
 994                 return;
 995
 996         QETH_CARD_TEXT(card, 5, "irq");
 997
 998         if (card->read.ccwdev == cdev) {
 999                 channel = &card->read;
1000                 QETH_CARD_TEXT(card, 5, "read");
1001         } else if (card->write.ccwdev == cdev) {
1002                 channel = &card->write;
1003                 QETH_CARD_TEXT(card, 5, "write");
1004         } else {
1005                 channel = &card->data;
1006                 QETH_CARD_TEXT(card, 5, "data");
1007         }
1008         atomic_set(&channel->irq_pending, 0);
1009
1010         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1011                 channel->state = CH_STATE_STOPPED;
1012
1013         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1014                 channel->state = CH_STATE_HALTED;
1015
1016         /*let's wake up immediately on data channel*/
1017         if ((channel == &card->data) && (intparm != 0) &&
1018             (intparm != QETH_RCD_PARM))
1019                 goto out;
1020
1021         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1022                 QETH_CARD_TEXT(card, 6, "clrchpar");
1023                 /* we don't have to handle this further */
1024                 intparm = 0;
1025         }
1026         if (intparm == QETH_HALT_CHANNEL_PARM) {
1027                 QETH_CARD_TEXT(card, 6, "hltchpar");
1028                 /* we don't have to handle this further */
1029                 intparm = 0;
1030         }
1031         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1032             (dstat & DEV_STAT_UNIT_CHECK) ||
1033             (cstat)) {
1034                 if (irb->esw.esw0.erw.cons) {
1035                         dev_warn(&channel->ccwdev->dev,
1036                                 "The qeth device driver failed to recover "
1037                                 "an error on the device\n");
1038                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1039                                 "0x%X dstat 0x%X\n",
1040                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1041                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1042                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1043                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1044                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1045                 }
1046                 if (intparm == QETH_RCD_PARM) {
1047                         channel->state = CH_STATE_DOWN;
1048                         goto out;
1049                 }
1050                 rc = qeth_get_problem(cdev, irb);
1051                 if (rc) {
1052                         qeth_clear_ipacmd_list(card);
1053                         qeth_schedule_recovery(card);
1054                         goto out;
1055                 }
1056         }
1057
1058         if (intparm == QETH_RCD_PARM) {
1059                 channel->state = CH_STATE_RCD_DONE;
1060                 goto out;
1061         }
1062         if (intparm) {
1063                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1064                 buffer->state = BUF_STATE_PROCESSED;
1065         }
1066         if (channel == &card->data)
1067                 return;
1068         if (channel == &card->read &&
1069             channel->state == CH_STATE_UP)
1070                 qeth_issue_next_read(card);
1071
1072         iob = channel->iob;
1073         index = channel->buf_no;
1074         while (iob[index].state == BUF_STATE_PROCESSED) {
1075                 if (iob[index].callback != NULL)
1076                         iob[index].callback(channel, iob + index);
1077
1078                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1079         }
1080         channel->buf_no = index;
1081 out:
1082         wake_up(&card->wait_q);
1083         return;
1084 }
1085
1086 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1087                 struct qeth_qdio_out_buffer *buf,
1088                 enum iucv_tx_notify notification)
1089 {
1090         struct sk_buff *skb;
1091
1092         if (skb_queue_empty(&buf->skb_list))
1093                 goto out;
1094         skb = skb_peek(&buf->skb_list);
1095         while (skb) {
1096                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1097                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1098                 if (skb->protocol == ETH_P_AF_IUCV) {
1099                         if (skb->sk) {
1100                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1101                                 iucv->sk_txnotify(skb, notification);
1102                         }
1103                 }
1104                 if (skb_queue_is_last(&buf->skb_list, skb))
1105                         skb = NULL;
1106                 else
1107                         skb = skb_queue_next(&buf->skb_list, skb);
1108         }
1109 out:
1110         return;
1111 }
1112
1113 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1114 {
1115         struct sk_buff *skb;
1116
1117         skb = skb_dequeue(&buf->skb_list);
1118         while (skb) {
1119                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1120                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1121                 atomic_dec(&skb->users);
1122                 dev_kfree_skb_any(skb);
1123                 skb = skb_dequeue(&buf->skb_list);
1124         }
1125 }
1126
1127 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1128                 struct qeth_qdio_out_buffer *buf,
1129                 enum qeth_qdio_buffer_states newbufstate)
1130 {
1131         int i;
1132
1133         /* is PCI flag set on buffer? */
1134         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1135                 atomic_dec(&queue->set_pci_flags_count);
1136
1137         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1138                 qeth_release_skbs(buf);
1139         }
1140         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1141                 if (buf->buffer->element[i].addr && buf->is_header[i])
1142                         kmem_cache_free(qeth_core_header_cache,
1143                                 buf->buffer->element[i].addr);
1144                 buf->is_header[i] = 0;
1145                 buf->buffer->element[i].length = 0;
1146                 buf->buffer->element[i].addr = NULL;
1147                 buf->buffer->element[i].eflags = 0;
1148                 buf->buffer->element[i].sflags = 0;
1149         }
1150         buf->buffer->element[15].eflags = 0;
1151         buf->buffer->element[15].sflags = 0;
1152         buf->next_element_to_fill = 0;
1153         atomic_set(&buf->state, newbufstate);
1154 }
1155
1156 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1157 {
1158         int j;
1159
1160         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1161                 if (!q->bufs[j])
1162                         continue;
1163                 qeth_cleanup_handled_pending(q, j, free);
1164                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1165                 if (free) {
1166                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1167                         q->bufs[j] = NULL;
1168                 }
1169         }
1170 }
1171
1172 void qeth_clear_qdio_buffers(struct qeth_card *card)
1173 {
1174         int i;
1175
1176         QETH_CARD_TEXT(card, 2, "clearqdbf");
1177         /* clear outbound buffers to free skbs */
1178         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1179                 if (card->qdio.out_qs[i]) {
1180                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1181                 }
1182         }
1183 }
1184 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1185
1186 static void qeth_free_buffer_pool(struct qeth_card *card)
1187 {
1188         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1189         int i = 0;
1190         list_for_each_entry_safe(pool_entry, tmp,
1191                                  &card->qdio.init_pool.entry_list, init_list){
1192                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1193                         free_page((unsigned long)pool_entry->elements[i]);
1194                 list_del(&pool_entry->init_list);
1195                 kfree(pool_entry);
1196         }
1197 }
1198
1199 static void qeth_free_qdio_buffers(struct qeth_card *card)
1200 {
1201         int i, j;
1202
1203         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1204                 QETH_QDIO_UNINITIALIZED)
1205                 return;
1206
1207         qeth_free_cq(card);
1208         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1209         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1210                 kfree_skb(card->qdio.in_q->bufs[j].rx_skb);
1211         kfree(card->qdio.in_q);
1212         card->qdio.in_q = NULL;
1213         /* inbound buffer pool */
1214         qeth_free_buffer_pool(card);
1215         /* free outbound qdio_qs */
1216         if (card->qdio.out_qs) {
1217                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1218                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1219                         kfree(card->qdio.out_qs[i]);
1220                 }
1221                 kfree(card->qdio.out_qs);
1222                 card->qdio.out_qs = NULL;
1223         }
1224 }
1225
1226 static void qeth_clean_channel(struct qeth_channel *channel)
1227 {
1228         int cnt;
1229
1230         QETH_DBF_TEXT(SETUP, 2, "freech");
1231         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1232                 kfree(channel->iob[cnt].data);
1233 }
1234
1235 static void qeth_get_channel_path_desc(struct qeth_card *card)
1236 {
1237         struct ccw_device *ccwdev;
1238         struct channelPath_dsc {
1239                 u8 flags;
1240                 u8 lsn;
1241                 u8 desc;
1242                 u8 chpid;
1243                 u8 swla;
1244                 u8 zeroes;
1245                 u8 chla;
1246                 u8 chpp;
1247         } *chp_dsc;
1248
1249         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1250
1251         ccwdev = card->data.ccwdev;
1252         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1253         if (chp_dsc != NULL) {
1254                 if (card->info.type != QETH_CARD_TYPE_IQD) {
1255                         /* CHPP field bit 6 == 1 -> single queue */
1256                         if ((chp_dsc->chpp & 0x02) == 0x02) {
1257                                 if ((atomic_read(&card->qdio.state) !=
1258                                         QETH_QDIO_UNINITIALIZED) &&
1259                                     (card->qdio.no_out_queues == 4))
1260                                         /* change from 4 to 1 outbound queues */
1261                                         qeth_free_qdio_buffers(card);
1262                                 card->qdio.no_out_queues = 1;
1263                                 if (card->qdio.default_out_queue != 0)
1264                                         dev_info(&card->gdev->dev,
1265                                         "Priority Queueing not supported\n");
1266                                 card->qdio.default_out_queue = 0;
1267                         } else {
1268                                 if ((atomic_read(&card->qdio.state) !=
1269                                         QETH_QDIO_UNINITIALIZED) &&
1270                                     (card->qdio.no_out_queues == 1)) {
1271                                         /* change from 1 to 4 outbound queues */
1272                                         qeth_free_qdio_buffers(card);
1273                                         card->qdio.default_out_queue = 2;
1274                                 }
1275                                 card->qdio.no_out_queues = 4;
1276                         }
1277                 }
1278                 card->info.func_level = 0x4100 + chp_dsc->desc;
1279                 kfree(chp_dsc);
1280         }
1281         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1282         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1283         return;
1284 }
1285
1286 static void qeth_init_qdio_info(struct qeth_card *card)
1287 {
1288         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1289         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1290         /* inbound */
1291         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1292         if (card->info.type == QETH_CARD_TYPE_IQD)
1293                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1294         else
1295                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1296         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1297         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1298         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1299 }
1300
1301 static void qeth_set_intial_options(struct qeth_card *card)
1302 {
1303         card->options.route4.type = NO_ROUTER;
1304         card->options.route6.type = NO_ROUTER;
1305         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1306         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1307         card->options.fake_broadcast = 0;
1308         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1309         card->options.performance_stats = 0;
1310         card->options.rx_sg_cb = QETH_RX_SG_CB;
1311         card->options.isolation = ISOLATION_MODE_NONE;
1312         card->options.cq = QETH_CQ_DISABLED;
1313 }
1314
1315 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1316 {
1317         unsigned long flags;
1318         int rc = 0;
1319
1320         spin_lock_irqsave(&card->thread_mask_lock, flags);
1321         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1322                         (u8) card->thread_start_mask,
1323                         (u8) card->thread_allowed_mask,
1324                         (u8) card->thread_running_mask);
1325         rc = (card->thread_start_mask & thread);
1326         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1327         return rc;
1328 }
1329
1330 static void qeth_start_kernel_thread(struct work_struct *work)
1331 {
1332         struct qeth_card *card = container_of(work, struct qeth_card,
1333                                         kernel_thread_starter);
1334         QETH_CARD_TEXT(card , 2, "strthrd");
1335
1336         if (card->read.state != CH_STATE_UP &&
1337             card->write.state != CH_STATE_UP)
1338                 return;
1339         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1340                 kthread_run(card->discipline.recover, (void *) card,
1341                                 "qeth_recover");
1342 }
1343
1344 static int qeth_setup_card(struct qeth_card *card)
1345 {
1346
1347         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1348         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1349
1350         card->read.state  = CH_STATE_DOWN;
1351         card->write.state = CH_STATE_DOWN;
1352         card->data.state  = CH_STATE_DOWN;
1353         card->state = CARD_STATE_DOWN;
1354         card->lan_online = 0;
1355         card->read_or_write_problem = 0;
1356         card->dev = NULL;
1357         spin_lock_init(&card->vlanlock);
1358         spin_lock_init(&card->mclock);
1359         spin_lock_init(&card->lock);
1360         spin_lock_init(&card->ip_lock);
1361         spin_lock_init(&card->thread_mask_lock);
1362         mutex_init(&card->conf_mutex);
1363         mutex_init(&card->discipline_mutex);
1364         card->thread_start_mask = 0;
1365         card->thread_allowed_mask = 0;
1366         card->thread_running_mask = 0;
1367         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1368         INIT_LIST_HEAD(&card->ip_list);
1369         INIT_LIST_HEAD(card->ip_tbd_list);
1370         INIT_LIST_HEAD(&card->cmd_waiter_list);
1371         init_waitqueue_head(&card->wait_q);
1372         /* initial options */
1373         qeth_set_intial_options(card);
1374         /* IP address takeover */
1375         INIT_LIST_HEAD(&card->ipato.entries);
1376         card->ipato.enabled = 0;
1377         card->ipato.invert4 = 0;
1378         card->ipato.invert6 = 0;
1379         /* init QDIO stuff */
1380         qeth_init_qdio_info(card);
1381         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1382         return 0;
1383 }
1384
1385 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1386 {
1387         struct qeth_card *card = container_of(slr, struct qeth_card,
1388                                         qeth_service_level);
1389         if (card->info.mcl_level[0])
1390                 seq_printf(m, "qeth: %s firmware level %s\n",
1391                         CARD_BUS_ID(card), card->info.mcl_level);
1392 }
1393
1394 static struct qeth_card *qeth_alloc_card(void)
1395 {
1396         struct qeth_card *card;
1397
1398         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1399         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1400         if (!card)
1401                 goto out;
1402         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1403         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1404         if (!card->ip_tbd_list) {
1405                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1406                 goto out_card;
1407         }
1408         if (qeth_setup_channel(&card->read))
1409                 goto out_ip;
1410         if (qeth_setup_channel(&card->write))
1411                 goto out_channel;
1412         card->options.layer2 = -1;
1413         card->qeth_service_level.seq_print = qeth_core_sl_print;
1414         register_service_level(&card->qeth_service_level);
1415         return card;
1416
1417 out_channel:
1418         qeth_clean_channel(&card->read);
1419 out_ip:
1420         kfree(card->ip_tbd_list);
1421 out_card:
1422         kfree(card);
1423 out:
1424         return NULL;
1425 }
1426
1427 static int qeth_determine_card_type(struct qeth_card *card)
1428 {
1429         int i = 0;
1430
1431         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1432
1433         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1434         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1435         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1436                 if ((CARD_RDEV(card)->id.dev_type ==
1437                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1438                     (CARD_RDEV(card)->id.dev_model ==
1439                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1440                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1441                         card->qdio.no_out_queues =
1442                                 known_devices[i][QETH_QUEUE_NO_IND];
1443                         card->qdio.no_in_queues = 1;
1444                         card->info.is_multicast_different =
1445                                 known_devices[i][QETH_MULTICAST_IND];
1446                         qeth_get_channel_path_desc(card);
1447                         return 0;
1448                 }
1449                 i++;
1450         }
1451         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1452         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1453                 "unknown type\n");
1454         return -ENOENT;
1455 }
1456
1457 static int qeth_clear_channel(struct qeth_channel *channel)
1458 {
1459         unsigned long flags;
1460         struct qeth_card *card;
1461         int rc;
1462
1463         card = CARD_FROM_CDEV(channel->ccwdev);
1464         QETH_CARD_TEXT(card, 3, "clearch");
1465         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1466         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1467         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1468
1469         if (rc)
1470                 return rc;
1471         rc = wait_event_interruptible_timeout(card->wait_q,
1472                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1473         if (rc == -ERESTARTSYS)
1474                 return rc;
1475         if (channel->state != CH_STATE_STOPPED)
1476                 return -ETIME;
1477         channel->state = CH_STATE_DOWN;
1478         return 0;
1479 }
1480
1481 static int qeth_halt_channel(struct qeth_channel *channel)
1482 {
1483         unsigned long flags;
1484         struct qeth_card *card;
1485         int rc;
1486
1487         card = CARD_FROM_CDEV(channel->ccwdev);
1488         QETH_CARD_TEXT(card, 3, "haltch");
1489         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1490         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1491         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1492
1493         if (rc)
1494                 return rc;
1495         rc = wait_event_interruptible_timeout(card->wait_q,
1496                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1497         if (rc == -ERESTARTSYS)
1498                 return rc;
1499         if (channel->state != CH_STATE_HALTED)
1500                 return -ETIME;
1501         return 0;
1502 }
1503
1504 static int qeth_halt_channels(struct qeth_card *card)
1505 {
1506         int rc1 = 0, rc2 = 0, rc3 = 0;
1507
1508         QETH_CARD_TEXT(card, 3, "haltchs");
1509         rc1 = qeth_halt_channel(&card->read);
1510         rc2 = qeth_halt_channel(&card->write);
1511         rc3 = qeth_halt_channel(&card->data);
1512         if (rc1)
1513                 return rc1;
1514         if (rc2)
1515                 return rc2;
1516         return rc3;
1517 }
1518
1519 static int qeth_clear_channels(struct qeth_card *card)
1520 {
1521         int rc1 = 0, rc2 = 0, rc3 = 0;
1522
1523         QETH_CARD_TEXT(card, 3, "clearchs");
1524         rc1 = qeth_clear_channel(&card->read);
1525         rc2 = qeth_clear_channel(&card->write);
1526         rc3 = qeth_clear_channel(&card->data);
1527         if (rc1)
1528                 return rc1;
1529         if (rc2)
1530                 return rc2;
1531         return rc3;
1532 }
1533
1534 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1535 {
1536         int rc = 0;
1537
1538         QETH_CARD_TEXT(card, 3, "clhacrd");
1539
1540         if (halt)
1541                 rc = qeth_halt_channels(card);
1542         if (rc)
1543                 return rc;
1544         return qeth_clear_channels(card);
1545 }
1546
1547 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1548 {
1549         int rc = 0;
1550
1551         QETH_CARD_TEXT(card, 3, "qdioclr");
1552         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1553                 QETH_QDIO_CLEANING)) {
1554         case QETH_QDIO_ESTABLISHED:
1555                 if (card->info.type == QETH_CARD_TYPE_IQD)
1556                         rc = qdio_shutdown(CARD_DDEV(card),
1557                                 QDIO_FLAG_CLEANUP_USING_HALT);
1558                 else
1559                         rc = qdio_shutdown(CARD_DDEV(card),
1560                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1561                 if (rc)
1562                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1563                 qdio_free(CARD_DDEV(card));
1564                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1565                 break;
1566         case QETH_QDIO_CLEANING:
1567                 return rc;
1568         default:
1569                 break;
1570         }
1571         rc = qeth_clear_halt_card(card, use_halt);
1572         if (rc)
1573                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1574         card->state = CARD_STATE_DOWN;
1575         return rc;
1576 }
1577 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1578
1579 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1580                                int *length)
1581 {
1582         struct ciw *ciw;
1583         char *rcd_buf;
1584         int ret;
1585         struct qeth_channel *channel = &card->data;
1586         unsigned long flags;
1587
1588         /*
1589          * scan for RCD command in extended SenseID data
1590          */
1591         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1592         if (!ciw || ciw->cmd == 0)
1593                 return -EOPNOTSUPP;
1594         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1595         if (!rcd_buf)
1596                 return -ENOMEM;
1597
1598         channel->ccw.cmd_code = ciw->cmd;
1599         channel->ccw.cda = (__u32) __pa(rcd_buf);
1600         channel->ccw.count = ciw->count;
1601         channel->ccw.flags = CCW_FLAG_SLI;
1602         channel->state = CH_STATE_RCD;
1603         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1604         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1605                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1606                                        QETH_RCD_TIMEOUT);
1607         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1608         if (!ret)
1609                 wait_event(card->wait_q,
1610                            (channel->state == CH_STATE_RCD_DONE ||
1611                             channel->state == CH_STATE_DOWN));
1612         if (channel->state == CH_STATE_DOWN)
1613                 ret = -EIO;
1614         else
1615                 channel->state = CH_STATE_DOWN;
1616         if (ret) {
1617                 kfree(rcd_buf);
1618                 *buffer = NULL;
1619                 *length = 0;
1620         } else {
1621                 *length = ciw->count;
1622                 *buffer = rcd_buf;
1623         }
1624         return ret;
1625 }
1626
1627 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1628 {
1629         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1630         card->info.chpid = prcd[30];
1631         card->info.unit_addr2 = prcd[31];
1632         card->info.cula = prcd[63];
1633         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1634                                (prcd[0x11] == _ascebc['M']));
1635 }
1636
1637 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1638 {
1639         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1640
1641         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1642                 card->info.blkt.time_total = 250;
1643                 card->info.blkt.inter_packet = 5;
1644                 card->info.blkt.inter_packet_jumbo = 15;
1645         } else {
1646                 card->info.blkt.time_total = 0;
1647                 card->info.blkt.inter_packet = 0;
1648                 card->info.blkt.inter_packet_jumbo = 0;
1649         }
1650 }
1651
1652 static void qeth_init_tokens(struct qeth_card *card)
1653 {
1654         card->token.issuer_rm_w = 0x00010103UL;
1655         card->token.cm_filter_w = 0x00010108UL;
1656         card->token.cm_connection_w = 0x0001010aUL;
1657         card->token.ulp_filter_w = 0x0001010bUL;
1658         card->token.ulp_connection_w = 0x0001010dUL;
1659 }
1660
1661 static void qeth_init_func_level(struct qeth_card *card)
1662 {
1663         switch (card->info.type) {
1664         case QETH_CARD_TYPE_IQD:
1665                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1666                 break;
1667         case QETH_CARD_TYPE_OSD:
1668         case QETH_CARD_TYPE_OSN:
1669                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1670                 break;
1671         default:
1672                 break;
1673         }
1674 }
1675
1676 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1677                 void (*idx_reply_cb)(struct qeth_channel *,
1678                         struct qeth_cmd_buffer *))
1679 {
1680         struct qeth_cmd_buffer *iob;
1681         unsigned long flags;
1682         int rc;
1683         struct qeth_card *card;
1684
1685         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1686         card = CARD_FROM_CDEV(channel->ccwdev);
1687         iob = qeth_get_buffer(channel);
1688         iob->callback = idx_reply_cb;
1689         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1690         channel->ccw.count = QETH_BUFSIZE;
1691         channel->ccw.cda = (__u32) __pa(iob->data);
1692
1693         wait_event(card->wait_q,
1694                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1695         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1696         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1697         rc = ccw_device_start(channel->ccwdev,
1698                               &channel->ccw, (addr_t) iob, 0, 0);
1699         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1700
1701         if (rc) {
1702                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1703                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1704                 atomic_set(&channel->irq_pending, 0);
1705                 wake_up(&card->wait_q);
1706                 return rc;
1707         }
1708         rc = wait_event_interruptible_timeout(card->wait_q,
1709                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1710         if (rc == -ERESTARTSYS)
1711                 return rc;
1712         if (channel->state != CH_STATE_UP) {
1713                 rc = -ETIME;
1714                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1715                 qeth_clear_cmd_buffers(channel);
1716         } else
1717                 rc = 0;
1718         return rc;
1719 }
1720
1721 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1722                 void (*idx_reply_cb)(struct qeth_channel *,
1723                         struct qeth_cmd_buffer *))
1724 {
1725         struct qeth_card *card;
1726         struct qeth_cmd_buffer *iob;
1727         unsigned long flags;
1728         __u16 temp;
1729         __u8 tmp;
1730         int rc;
1731         struct ccw_dev_id temp_devid;
1732
1733         card = CARD_FROM_CDEV(channel->ccwdev);
1734
1735         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1736
1737         iob = qeth_get_buffer(channel);
1738         iob->callback = idx_reply_cb;
1739         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1740         channel->ccw.count = IDX_ACTIVATE_SIZE;
1741         channel->ccw.cda = (__u32) __pa(iob->data);
1742         if (channel == &card->write) {
1743                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1744                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1745                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1746                 card->seqno.trans_hdr++;
1747         } else {
1748                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1749                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1750                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1751         }
1752         tmp = ((__u8)card->info.portno) | 0x80;
1753         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1754         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1755                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1756         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1757                &card->info.func_level, sizeof(__u16));
1758         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1759         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1760         temp = (card->info.cula << 8) + card->info.unit_addr2;
1761         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1762
1763         wait_event(card->wait_q,
1764                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1765         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1766         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1767         rc = ccw_device_start(channel->ccwdev,
1768                               &channel->ccw, (addr_t) iob, 0, 0);
1769         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1770
1771         if (rc) {
1772                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1773                         rc);
1774                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1775                 atomic_set(&channel->irq_pending, 0);
1776                 wake_up(&card->wait_q);
1777                 return rc;
1778         }
1779         rc = wait_event_interruptible_timeout(card->wait_q,
1780                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1781         if (rc == -ERESTARTSYS)
1782                 return rc;
1783         if (channel->state != CH_STATE_ACTIVATING) {
1784                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1785                         " failed to recover an error on the device\n");
1786                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1787                         dev_name(&channel->ccwdev->dev));
1788                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1789                 qeth_clear_cmd_buffers(channel);
1790                 return -ETIME;
1791         }
1792         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1793 }
1794
1795 static int qeth_peer_func_level(int level)
1796 {
1797         if ((level & 0xff) == 8)
1798                 return (level & 0xff) + 0x400;
1799         if (((level >> 8) & 3) == 1)
1800                 return (level & 0xff) + 0x200;
1801         return level;
1802 }
1803
1804 static void qeth_idx_write_cb(struct qeth_channel *channel,
1805                 struct qeth_cmd_buffer *iob)
1806 {
1807         struct qeth_card *card;
1808         __u16 temp;
1809
1810         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1811
1812         if (channel->state == CH_STATE_DOWN) {
1813                 channel->state = CH_STATE_ACTIVATING;
1814                 goto out;
1815         }
1816         card = CARD_FROM_CDEV(channel->ccwdev);
1817
1818         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1819                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1820                         dev_err(&card->write.ccwdev->dev,
1821                                 "The adapter is used exclusively by another "
1822                                 "host\n");
1823                 else
1824                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1825                                 " negative reply\n",
1826                                 dev_name(&card->write.ccwdev->dev));
1827                 goto out;
1828         }
1829         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1830         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1831                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1832                         "function level mismatch (sent: 0x%x, received: "
1833                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1834                         card->info.func_level, temp);
1835                 goto out;
1836         }
1837         channel->state = CH_STATE_UP;
1838 out:
1839         qeth_release_buffer(channel, iob);
1840 }
1841
1842 static void qeth_idx_read_cb(struct qeth_channel *channel,
1843                 struct qeth_cmd_buffer *iob)
1844 {
1845         struct qeth_card *card;
1846         __u16 temp;
1847
1848         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1849         if (channel->state == CH_STATE_DOWN) {
1850                 channel->state = CH_STATE_ACTIVATING;
1851                 goto out;
1852         }
1853
1854         card = CARD_FROM_CDEV(channel->ccwdev);
1855         if (qeth_check_idx_response(card, iob->data))
1856                         goto out;
1857
1858         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1859                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1860                 case QETH_IDX_ACT_ERR_EXCL:
1861                         dev_err(&card->write.ccwdev->dev,
1862                                 "The adapter is used exclusively by another "
1863                                 "host\n");
1864                         break;
1865                 case QETH_IDX_ACT_ERR_AUTH:
1866                 case QETH_IDX_ACT_ERR_AUTH_USER:
1867                         dev_err(&card->read.ccwdev->dev,
1868                                 "Setting the device online failed because of "
1869                                 "insufficient authorization\n");
1870                         break;
1871                 default:
1872                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1873                                 " negative reply\n",
1874                                 dev_name(&card->read.ccwdev->dev));
1875                 }
1876                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1877                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1878                 goto out;
1879         }
1880
1881 /**
1882  *  * temporary fix for microcode bug
1883  *   * to revert it,replace OR by AND
1884  *    */
1885         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1886              (card->info.type == QETH_CARD_TYPE_OSD))
1887                 card->info.portname_required = 1;
1888
1889         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1890         if (temp != qeth_peer_func_level(card->info.func_level)) {
1891                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1892                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1893                         dev_name(&card->read.ccwdev->dev),
1894                         card->info.func_level, temp);
1895                 goto out;
1896         }
1897         memcpy(&card->token.issuer_rm_r,
1898                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1899                QETH_MPC_TOKEN_LENGTH);
1900         memcpy(&card->info.mcl_level[0],
1901                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1902         channel->state = CH_STATE_UP;
1903 out:
1904         qeth_release_buffer(channel, iob);
1905 }
1906
1907 void qeth_prepare_control_data(struct qeth_card *card, int len,
1908                 struct qeth_cmd_buffer *iob)
1909 {
1910         qeth_setup_ccw(&card->write, iob->data, len);
1911         iob->callback = qeth_release_buffer;
1912
1913         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1914                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1915         card->seqno.trans_hdr++;
1916         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1917                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1918         card->seqno.pdu_hdr++;
1919         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1920                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1921         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1922 }
1923 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1924
1925 int qeth_send_control_data(struct qeth_card *card, int len,
1926                 struct qeth_cmd_buffer *iob,
1927                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1928                         unsigned long),
1929                 void *reply_param)
1930 {
1931         int rc;
1932         unsigned long flags;
1933         struct qeth_reply *reply = NULL;
1934         unsigned long timeout, event_timeout;
1935         struct qeth_ipa_cmd *cmd = NULL;
1936
1937         QETH_CARD_TEXT(card, 2, "sendctl");
1938
1939         if (card->read_or_write_problem) {
1940                 qeth_release_buffer(iob->channel, iob);
1941                 return -EIO;
1942         }
1943         reply = qeth_alloc_reply(card);
1944         if (!reply) {
1945                 return -ENOMEM;
1946         }
1947         reply->callback = reply_cb;
1948         reply->param = reply_param;
1949         if (card->state == CARD_STATE_DOWN)
1950                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1951         else
1952                 reply->seqno = card->seqno.ipa++;
1953         init_waitqueue_head(&reply->wait_q);
1954         spin_lock_irqsave(&card->lock, flags);
1955         list_add_tail(&reply->list, &card->cmd_waiter_list);
1956         spin_unlock_irqrestore(&card->lock, flags);
1957         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1958
1959         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1960         qeth_prepare_control_data(card, len, iob);
1961
1962         if (IS_IPA(iob->data)) {
1963                 cmd = __ipa_cmd(iob);
1964                 event_timeout = QETH_IPA_TIMEOUT;
1965         } else {
1966                 event_timeout = QETH_TIMEOUT;
1967         }
1968
1969         timeout = jiffies + event_timeout;
1970
1971         QETH_CARD_TEXT(card, 6, "noirqpnd");
1972         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1973         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1974                               (addr_t) iob, 0, 0);
1975         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1976         if (rc) {
1977                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1978                         "ccw_device_start rc = %i\n",
1979                         dev_name(&card->write.ccwdev->dev), rc);
1980                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1981                 spin_lock_irqsave(&card->lock, flags);
1982                 list_del_init(&reply->list);
1983                 qeth_put_reply(reply);
1984                 spin_unlock_irqrestore(&card->lock, flags);
1985                 qeth_release_buffer(iob->channel, iob);
1986                 atomic_set(&card->write.irq_pending, 0);
1987                 wake_up(&card->wait_q);
1988                 return rc;
1989         }
1990
1991         /* we have only one long running ipassist, since we can ensure
1992            process context of this command we can sleep */
1993         if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
1994             cmd->hdr.prot_version == QETH_PROT_IPV4) {
1995                 if (!wait_event_timeout(reply->wait_q,
1996                     atomic_read(&reply->received), event_timeout))
1997                         goto time_err;
1998         } else {
1999                 while (!atomic_read(&reply->received)) {
2000                         if (time_after(jiffies, timeout))
2001                                 goto time_err;
2002                         cpu_relax();
2003                 };
2004         }
2005
2006         if (reply->rc == -EIO)
2007                 goto error;
2008         rc = reply->rc;
2009         qeth_put_reply(reply);
2010         return rc;
2011
2012 time_err:
2013         reply->rc = -ETIME;
2014         spin_lock_irqsave(&reply->card->lock, flags);
2015         list_del_init(&reply->list);
2016         spin_unlock_irqrestore(&reply->card->lock, flags);
2017         atomic_inc(&reply->received);
2018 error:
2019         atomic_set(&card->write.irq_pending, 0);
2020         qeth_release_buffer(iob->channel, iob);
2021         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2022         rc = reply->rc;
2023         qeth_put_reply(reply);
2024         return rc;
2025 }
2026 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2027
2028 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2029                 unsigned long data)
2030 {
2031         struct qeth_cmd_buffer *iob;
2032
2033         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2034
2035         iob = (struct qeth_cmd_buffer *) data;
2036         memcpy(&card->token.cm_filter_r,
2037                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2038                QETH_MPC_TOKEN_LENGTH);
2039         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2040         return 0;
2041 }
2042
2043 static int qeth_cm_enable(struct qeth_card *card)
2044 {
2045         int rc;
2046         struct qeth_cmd_buffer *iob;
2047
2048         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2049
2050         iob = qeth_wait_for_buffer(&card->write);
2051         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2052         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2053                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2054         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2055                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2056
2057         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2058                                     qeth_cm_enable_cb, NULL);
2059         return rc;
2060 }
2061
2062 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2063                 unsigned long data)
2064 {
2065
2066         struct qeth_cmd_buffer *iob;
2067
2068         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2069
2070         iob = (struct qeth_cmd_buffer *) data;
2071         memcpy(&card->token.cm_connection_r,
2072                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2073                QETH_MPC_TOKEN_LENGTH);
2074         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2075         return 0;
2076 }
2077
2078 static int qeth_cm_setup(struct qeth_card *card)
2079 {
2080         int rc;
2081         struct qeth_cmd_buffer *iob;
2082
2083         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2084
2085         iob = qeth_wait_for_buffer(&card->write);
2086         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2087         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2088                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2089         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2090                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2091         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2092                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2093         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2094                                     qeth_cm_setup_cb, NULL);
2095         return rc;
2096
2097 }
2098
2099 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2100 {
2101         switch (card->info.type) {
2102         case QETH_CARD_TYPE_UNKNOWN:
2103                 return 1500;
2104         case QETH_CARD_TYPE_IQD:
2105                 return card->info.max_mtu;
2106         case QETH_CARD_TYPE_OSD:
2107                 switch (card->info.link_type) {
2108                 case QETH_LINK_TYPE_HSTR:
2109                 case QETH_LINK_TYPE_LANE_TR:
2110                         return 2000;
2111                 default:
2112                         return 1492;
2113                 }
2114         case QETH_CARD_TYPE_OSM:
2115         case QETH_CARD_TYPE_OSX:
2116                 return 1492;
2117         default:
2118                 return 1500;
2119         }
2120 }
2121
2122 static inline int qeth_get_mtu_outof_framesize(int framesize)
2123 {
2124         switch (framesize) {
2125         case 0x4000:
2126                 return 8192;
2127         case 0x6000:
2128                 return 16384;
2129         case 0xa000:
2130                 return 32768;
2131         case 0xffff:
2132                 return 57344;
2133         default:
2134                 return 0;
2135         }
2136 }
2137
2138 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2139 {
2140         switch (card->info.type) {
2141         case QETH_CARD_TYPE_OSD:
2142         case QETH_CARD_TYPE_OSM:
2143         case QETH_CARD_TYPE_OSX:
2144         case QETH_CARD_TYPE_IQD:
2145                 return ((mtu >= 576) &&
2146                         (mtu <= card->info.max_mtu));
2147         case QETH_CARD_TYPE_OSN:
2148         case QETH_CARD_TYPE_UNKNOWN:
2149         default:
2150                 return 1;
2151         }
2152 }
2153
2154 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2155                 unsigned long data)
2156 {
2157
2158         __u16 mtu, framesize;
2159         __u16 len;
2160         __u8 link_type;
2161         struct qeth_cmd_buffer *iob;
2162
2163         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2164
2165         iob = (struct qeth_cmd_buffer *) data;
2166         memcpy(&card->token.ulp_filter_r,
2167                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2168                QETH_MPC_TOKEN_LENGTH);
2169         if (card->info.type == QETH_CARD_TYPE_IQD) {
2170                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2171                 mtu = qeth_get_mtu_outof_framesize(framesize);
2172                 if (!mtu) {
2173                         iob->rc = -EINVAL;
2174                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2175                         return 0;
2176                 }
2177                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2178                         /* frame size has changed */
2179                         if (card->dev &&
2180                             ((card->dev->mtu == card->info.initial_mtu) ||
2181                              (card->dev->mtu > mtu)))
2182                                 card->dev->mtu = mtu;
2183                         qeth_free_qdio_buffers(card);
2184                 }
2185                 card->info.initial_mtu = mtu;
2186                 card->info.max_mtu = mtu;
2187                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2188         } else {
2189                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2190                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2191                         iob->data);
2192                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2193         }
2194
2195         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2196         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2197                 memcpy(&link_type,
2198                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2199                 card->info.link_type = link_type;
2200         } else
2201                 card->info.link_type = 0;
2202         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2203         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2204         return 0;
2205 }
2206
2207 static int qeth_ulp_enable(struct qeth_card *card)
2208 {
2209         int rc;
2210         char prot_type;
2211         struct qeth_cmd_buffer *iob;
2212
2213         /*FIXME: trace view callbacks*/
2214         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2215
2216         iob = qeth_wait_for_buffer(&card->write);
2217         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2218
2219         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2220                 (__u8) card->info.portno;
2221         if (card->options.layer2)
2222                 if (card->info.type == QETH_CARD_TYPE_OSN)
2223                         prot_type = QETH_PROT_OSN2;
2224                 else
2225                         prot_type = QETH_PROT_LAYER2;
2226         else
2227                 prot_type = QETH_PROT_TCPIP;
2228
2229         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2230         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2231                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2232         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2233                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2234         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2235                card->info.portname, 9);
2236         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2237                                     qeth_ulp_enable_cb, NULL);
2238         return rc;
2239
2240 }
2241
2242 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2243                 unsigned long data)
2244 {
2245         struct qeth_cmd_buffer *iob;
2246         int rc = 0;
2247
2248         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2249
2250         iob = (struct qeth_cmd_buffer *) data;
2251         memcpy(&card->token.ulp_connection_r,
2252                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2253                QETH_MPC_TOKEN_LENGTH);
2254         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2255                      3)) {
2256                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2257                 dev_err(&card->gdev->dev, "A connection could not be "
2258                         "established because of an OLM limit\n");
2259                 iob->rc = -EMLINK;
2260         }
2261         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2262         return rc;
2263 }
2264
2265 static int qeth_ulp_setup(struct qeth_card *card)
2266 {
2267         int rc;
2268         __u16 temp;
2269         struct qeth_cmd_buffer *iob;
2270         struct ccw_dev_id dev_id;
2271
2272         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2273
2274         iob = qeth_wait_for_buffer(&card->write);
2275         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2276
2277         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2278                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2279         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2280                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2281         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2282                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2283
2284         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2285         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2286         temp = (card->info.cula << 8) + card->info.unit_addr2;
2287         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2288         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2289                                     qeth_ulp_setup_cb, NULL);
2290         return rc;
2291 }
2292
2293 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2294 {
2295         int rc;
2296         struct qeth_qdio_out_buffer *newbuf;
2297
2298         rc = 0;
2299         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2300         if (!newbuf) {
2301                 rc = -ENOMEM;
2302                 goto out;
2303         }
2304         newbuf->buffer = &q->qdio_bufs[bidx];
2305         skb_queue_head_init(&newbuf->skb_list);
2306         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2307         newbuf->q = q;
2308         newbuf->aob = NULL;
2309         newbuf->next_pending = q->bufs[bidx];
2310         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2311         q->bufs[bidx] = newbuf;
2312         if (q->bufstates) {
2313                 q->bufstates[bidx].user = newbuf;
2314                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2315                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2316                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2317                                 (long) newbuf->next_pending);
2318         }
2319 out:
2320         return rc;
2321 }
2322
2323
2324 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2325 {
2326         int i, j;
2327
2328         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2329
2330         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2331                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2332                 return 0;
2333
2334         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2335                                    GFP_KERNEL);
2336         if (!card->qdio.in_q)
2337                 goto out_nomem;
2338         QETH_DBF_TEXT(SETUP, 2, "inq");
2339         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2340         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2341         /* give inbound qeth_qdio_buffers their qdio_buffers */
2342         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2343                 card->qdio.in_q->bufs[i].buffer =
2344                         &card->qdio.in_q->qdio_bufs[i];
2345                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2346         }
2347         /* inbound buffer pool */
2348         if (qeth_alloc_buffer_pool(card))
2349                 goto out_freeinq;
2350
2351         /* outbound */
2352         card->qdio.out_qs =
2353                 kzalloc(card->qdio.no_out_queues *
2354                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2355         if (!card->qdio.out_qs)
2356                 goto out_freepool;
2357         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2358                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2359                                                GFP_KERNEL);
2360                 if (!card->qdio.out_qs[i])
2361                         goto out_freeoutq;
2362                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2363                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2364                 card->qdio.out_qs[i]->queue_no = i;
2365                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2366                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2367                         BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2368                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2369                                 goto out_freeoutqbufs;
2370                 }
2371         }
2372
2373         /* completion */
2374         if (qeth_alloc_cq(card))
2375                 goto out_freeoutq;
2376
2377         return 0;
2378
2379 out_freeoutqbufs:
2380         while (j > 0) {
2381                 --j;
2382                 kmem_cache_free(qeth_qdio_outbuf_cache,
2383                                 card->qdio.out_qs[i]->bufs[j]);
2384                 card->qdio.out_qs[i]->bufs[j] = NULL;
2385         }
2386 out_freeoutq:
2387         while (i > 0) {
2388                 kfree(card->qdio.out_qs[--i]);
2389                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2390         }
2391         kfree(card->qdio.out_qs);
2392         card->qdio.out_qs = NULL;
2393 out_freepool:
2394         qeth_free_buffer_pool(card);
2395 out_freeinq:
2396         kfree(card->qdio.in_q);
2397         card->qdio.in_q = NULL;
2398 out_nomem:
2399         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2400         return -ENOMEM;
2401 }
2402
2403 static void qeth_create_qib_param_field(struct qeth_card *card,
2404                 char *param_field)
2405 {
2406
2407         param_field[0] = _ascebc['P'];
2408         param_field[1] = _ascebc['C'];
2409         param_field[2] = _ascebc['I'];
2410         param_field[3] = _ascebc['T'];
2411         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2412         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2413         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2414 }
2415
2416 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2417                 char *param_field)
2418 {
2419         param_field[16] = _ascebc['B'];
2420         param_field[17] = _ascebc['L'];
2421         param_field[18] = _ascebc['K'];
2422         param_field[19] = _ascebc['T'];
2423         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2424         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2425         *((unsigned int *) (&param_field[28])) =
2426                 card->info.blkt.inter_packet_jumbo;
2427 }
2428
2429 static int qeth_qdio_activate(struct qeth_card *card)
2430 {
2431         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2432         return qdio_activate(CARD_DDEV(card));
2433 }
2434
2435 static int qeth_dm_act(struct qeth_card *card)
2436 {
2437         int rc;
2438         struct qeth_cmd_buffer *iob;
2439
2440         QETH_DBF_TEXT(SETUP, 2, "dmact");
2441
2442         iob = qeth_wait_for_buffer(&card->write);
2443         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2444
2445         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2446                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2447         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2448                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2449         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2450         return rc;
2451 }
2452
2453 static int qeth_mpc_initialize(struct qeth_card *card)
2454 {
2455         int rc;
2456
2457         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2458
2459         rc = qeth_issue_next_read(card);
2460         if (rc) {
2461                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2462                 return rc;
2463         }
2464         rc = qeth_cm_enable(card);
2465         if (rc) {
2466                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2467                 goto out_qdio;
2468         }
2469         rc = qeth_cm_setup(card);
2470         if (rc) {
2471                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2472                 goto out_qdio;
2473         }
2474         rc = qeth_ulp_enable(card);
2475         if (rc) {
2476                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2477                 goto out_qdio;
2478         }
2479         rc = qeth_ulp_setup(card);
2480         if (rc) {
2481                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2482                 goto out_qdio;
2483         }
2484         rc = qeth_alloc_qdio_buffers(card);
2485         if (rc) {
2486                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2487                 goto out_qdio;
2488         }
2489         rc = qeth_qdio_establish(card);
2490         if (rc) {
2491                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2492                 qeth_free_qdio_buffers(card);
2493                 goto out_qdio;
2494         }
2495         rc = qeth_qdio_activate(card);
2496         if (rc) {
2497                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2498                 goto out_qdio;
2499         }
2500         rc = qeth_dm_act(card);
2501         if (rc) {
2502                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2503                 goto out_qdio;
2504         }
2505
2506         return 0;
2507 out_qdio:
2508         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2509         return rc;
2510 }
2511
2512 static void qeth_print_status_with_portname(struct qeth_card *card)
2513 {
2514         char dbf_text[15];
2515         int i;
2516
2517         sprintf(dbf_text, "%s", card->info.portname + 1);
2518         for (i = 0; i < 8; i++)
2519                 dbf_text[i] =
2520                         (char) _ebcasc[(__u8) dbf_text[i]];
2521         dbf_text[8] = 0;
2522         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2523                "with link type %s (portname: %s)\n",
2524                qeth_get_cardname(card),
2525                (card->info.mcl_level[0]) ? " (level: " : "",
2526                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2527                (card->info.mcl_level[0]) ? ")" : "",
2528                qeth_get_cardname_short(card),
2529                dbf_text);
2530
2531 }
2532
2533 static void qeth_print_status_no_portname(struct qeth_card *card)
2534 {
2535         if (card->info.portname[0])
2536                 dev_info(&card->gdev->dev, "Device is a%s "
2537                        "card%s%s%s\nwith link type %s "
2538                        "(no portname needed by interface).\n",
2539                        qeth_get_cardname(card),
2540                        (card->info.mcl_level[0]) ? " (level: " : "",
2541                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2542                        (card->info.mcl_level[0]) ? ")" : "",
2543                        qeth_get_cardname_short(card));
2544         else
2545                 dev_info(&card->gdev->dev, "Device is a%s "
2546                        "card%s%s%s\nwith link type %s.\n",
2547                        qeth_get_cardname(card),
2548                        (card->info.mcl_level[0]) ? " (level: " : "",
2549                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2550                        (card->info.mcl_level[0]) ? ")" : "",
2551                        qeth_get_cardname_short(card));
2552 }
2553
2554 void qeth_print_status_message(struct qeth_card *card)
2555 {
2556         switch (card->info.type) {
2557         case QETH_CARD_TYPE_OSD:
2558         case QETH_CARD_TYPE_OSM:
2559         case QETH_CARD_TYPE_OSX:
2560                 /* VM will use a non-zero first character
2561                  * to indicate a HiperSockets like reporting
2562                  * of the level OSA sets the first character to zero
2563                  * */
2564                 if (!card->info.mcl_level[0]) {
2565                         sprintf(card->info.mcl_level, "%02x%02x",
2566                                 card->info.mcl_level[2],
2567                                 card->info.mcl_level[3]);
2568
2569                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2570                         break;
2571                 }
2572                 /* fallthrough */
2573         case QETH_CARD_TYPE_IQD:
2574                 if ((card->info.guestlan) ||
2575                     (card->info.mcl_level[0] & 0x80)) {
2576                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2577                                 card->info.mcl_level[0]];
2578                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2579                                 card->info.mcl_level[1]];
2580                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2581                                 card->info.mcl_level[2]];
2582                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2583                                 card->info.mcl_level[3]];
2584                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2585                 }
2586                 break;
2587         default:
2588                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2589         }
2590         if (card->info.portname_required)
2591                 qeth_print_status_with_portname(card);
2592         else
2593                 qeth_print_status_no_portname(card);
2594 }
2595 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2596
2597 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2598 {
2599         struct qeth_buffer_pool_entry *entry;
2600
2601         QETH_CARD_TEXT(card, 5, "inwrklst");
2602
2603         list_for_each_entry(entry,
2604                             &card->qdio.init_pool.entry_list, init_list) {
2605                 qeth_put_buffer_pool_entry(card, entry);
2606         }
2607 }
2608
2609 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2610                 struct qeth_card *card)
2611 {
2612         struct list_head *plh;
2613         struct qeth_buffer_pool_entry *entry;
2614         int i, free;
2615         struct page *page;
2616
2617         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2618                 return NULL;
2619
2620         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2621                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2622                 free = 1;
2623                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2624                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2625                                 free = 0;
2626                                 break;
2627                         }
2628                 }
2629                 if (free) {
2630                         list_del_init(&entry->list);
2631                         return entry;
2632                 }
2633         }
2634
2635         /* no free buffer in pool so take first one and swap pages */
2636         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2637                         struct qeth_buffer_pool_entry, list);
2638         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2639                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2640                         page = alloc_page(GFP_ATOMIC);
2641                         if (!page) {
2642                                 return NULL;
2643                         } else {
2644                                 free_page((unsigned long)entry->elements[i]);
2645                                 entry->elements[i] = page_address(page);
2646                                 if (card->options.performance_stats)
2647                                         card->perf_stats.sg_alloc_page_rx++;
2648                         }
2649                 }
2650         }
2651         list_del_init(&entry->list);
2652         return entry;
2653 }
2654
2655 static int qeth_init_input_buffer(struct qeth_card *card,
2656                 struct qeth_qdio_buffer *buf)
2657 {
2658         struct qeth_buffer_pool_entry *pool_entry;
2659         int i;
2660
2661         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2662                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2663                 if (!buf->rx_skb)
2664                         return 1;
2665         }
2666
2667         pool_entry = qeth_find_free_buffer_pool_entry(card);
2668         if (!pool_entry)
2669                 return 1;
2670
2671         /*
2672          * since the buffer is accessed only from the input_tasklet
2673          * there shouldn't be a need to synchronize; also, since we use
2674          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2675          * buffers
2676          */
2677
2678         buf->pool_entry = pool_entry;
2679         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2680                 buf->buffer->element[i].length = PAGE_SIZE;
2681                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2682                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2683                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2684                 else
2685                         buf->buffer->element[i].eflags = 0;
2686                 buf->buffer->element[i].sflags = 0;
2687         }
2688         return 0;
2689 }
2690
2691 int qeth_init_qdio_queues(struct qeth_card *card)
2692 {
2693         int i, j;
2694         int rc;
2695
2696         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2697
2698         /* inbound queue */
2699         memset(card->qdio.in_q->qdio_bufs, 0,
2700                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2701         qeth_initialize_working_pool_list(card);
2702         /*give only as many buffers to hardware as we have buffer pool entries*/
2703         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2704                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2705         card->qdio.in_q->next_buf_to_init =
2706                 card->qdio.in_buf_pool.buf_count - 1;
2707         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2708                      card->qdio.in_buf_pool.buf_count - 1);
2709         if (rc) {
2710                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2711                 return rc;
2712         }
2713
2714         /* completion */
2715         rc = qeth_cq_init(card);
2716         if (rc) {
2717                 return rc;
2718         }
2719
2720         /* outbound queue */
2721         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2722                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2723                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2724                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2725                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2726                                         card->qdio.out_qs[i]->bufs[j],
2727                                         QETH_QDIO_BUF_EMPTY);
2728                 }
2729                 card->qdio.out_qs[i]->card = card;
2730                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2731                 card->qdio.out_qs[i]->do_pack = 0;
2732                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2733                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2734                 atomic_set(&card->qdio.out_qs[i]->state,
2735                            QETH_OUT_Q_UNLOCKED);
2736         }
2737         return 0;
2738 }
2739 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2740
2741 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2742 {
2743         switch (link_type) {
2744         case QETH_LINK_TYPE_HSTR:
2745                 return 2;
2746         default:
2747                 return 1;
2748         }
2749 }
2750
2751 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2752                 struct qeth_ipa_cmd *cmd, __u8 command,
2753                 enum qeth_prot_versions prot)
2754 {
2755         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2756         cmd->hdr.command = command;
2757         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2758         cmd->hdr.seqno = card->seqno.ipa;
2759         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2760         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2761         if (card->options.layer2)
2762                 cmd->hdr.prim_version_no = 2;
2763         else
2764                 cmd->hdr.prim_version_no = 1;
2765         cmd->hdr.param_count = 1;
2766         cmd->hdr.prot_version = prot;
2767         cmd->hdr.ipa_supported = 0;
2768         cmd->hdr.ipa_enabled = 0;
2769 }
2770
2771 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2772                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2773 {
2774         struct qeth_cmd_buffer *iob;
2775         struct qeth_ipa_cmd *cmd;
2776
2777         iob = qeth_wait_for_buffer(&card->write);
2778         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2779         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2780
2781         return iob;
2782 }
2783 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2784
2785 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2786                 char prot_type)
2787 {
2788         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2789         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2790         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2791                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2792 }
2793 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2794
2795 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2796                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2797                         unsigned long),
2798                 void *reply_param)
2799 {
2800         int rc;
2801         char prot_type;
2802
2803         QETH_CARD_TEXT(card, 4, "sendipa");
2804
2805         if (card->options.layer2)
2806                 if (card->info.type == QETH_CARD_TYPE_OSN)
2807                         prot_type = QETH_PROT_OSN2;
2808                 else
2809                         prot_type = QETH_PROT_LAYER2;
2810         else
2811                 prot_type = QETH_PROT_TCPIP;
2812         qeth_prepare_ipa_cmd(card, iob, prot_type);
2813         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2814                                                 iob, reply_cb, reply_param);
2815         if (rc == -ETIME) {
2816                 qeth_clear_ipacmd_list(card);
2817                 qeth_schedule_recovery(card);
2818         }
2819         return rc;
2820 }
2821 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2822
2823 int qeth_send_startlan(struct qeth_card *card)
2824 {
2825         int rc;
2826         struct qeth_cmd_buffer *iob;
2827
2828         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2829
2830         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2831         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2832         return rc;
2833 }
2834 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2835
2836 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2837                 struct qeth_reply *reply, unsigned long data)
2838 {
2839         struct qeth_ipa_cmd *cmd;
2840
2841         QETH_CARD_TEXT(card, 4, "defadpcb");
2842
2843         cmd = (struct qeth_ipa_cmd *) data;
2844         if (cmd->hdr.return_code == 0)
2845                 cmd->hdr.return_code =
2846                         cmd->data.setadapterparms.hdr.return_code;
2847         return 0;
2848 }
2849 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2850
2851 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2852                 struct qeth_reply *reply, unsigned long data)
2853 {
2854         struct qeth_ipa_cmd *cmd;
2855
2856         QETH_CARD_TEXT(card, 3, "quyadpcb");
2857
2858         cmd = (struct qeth_ipa_cmd *) data;
2859         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2860                 card->info.link_type =
2861                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2862                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2863         }
2864         card->options.adp.supported_funcs =
2865                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2866         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2867 }
2868
2869 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2870                 __u32 command, __u32 cmdlen)
2871 {
2872         struct qeth_cmd_buffer *iob;
2873         struct qeth_ipa_cmd *cmd;
2874
2875         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2876                                      QETH_PROT_IPV4);
2877         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2878         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2879         cmd->data.setadapterparms.hdr.command_code = command;
2880         cmd->data.setadapterparms.hdr.used_total = 1;
2881         cmd->data.setadapterparms.hdr.seq_no = 1;
2882
2883         return iob;
2884 }
2885 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2886
2887 int qeth_query_setadapterparms(struct qeth_card *card)
2888 {
2889         int rc;
2890         struct qeth_cmd_buffer *iob;
2891
2892         QETH_CARD_TEXT(card, 3, "queryadp");
2893         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2894                                    sizeof(struct qeth_ipacmd_setadpparms));
2895         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2896         return rc;
2897 }
2898 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2899
2900 static int qeth_query_ipassists_cb(struct qeth_card *card,
2901                 struct qeth_reply *reply, unsigned long data)
2902 {
2903         struct qeth_ipa_cmd *cmd;
2904
2905         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2906
2907         cmd = (struct qeth_ipa_cmd *) data;
2908         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2909                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2910                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2911         } else {
2912                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2913                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2914         }
2915         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2916         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
2917         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
2918         return 0;
2919 }
2920
2921 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2922 {
2923         int rc;
2924         struct qeth_cmd_buffer *iob;
2925
2926         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2927         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2928         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2929         return rc;
2930 }
2931 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2932
2933 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2934                 struct qeth_reply *reply, unsigned long data)
2935 {
2936         struct qeth_ipa_cmd *cmd;
2937         __u16 rc;
2938
2939         cmd = (struct qeth_ipa_cmd *)data;
2940         rc = cmd->hdr.return_code;
2941         if (rc)
2942                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2943         else
2944                 card->info.diagass_support = cmd->data.diagass.ext;
2945         return 0;
2946 }
2947
2948 static int qeth_query_setdiagass(struct qeth_card *card)
2949 {
2950         struct qeth_cmd_buffer *iob;
2951         struct qeth_ipa_cmd    *cmd;
2952
2953         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2954         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2955         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2956         cmd->data.diagass.subcmd_len = 16;
2957         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2958         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2959 }
2960
2961 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2962 {
2963         unsigned long info = get_zeroed_page(GFP_KERNEL);
2964         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2965         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2966         struct ccw_dev_id ccwid;
2967         int level, rc;
2968
2969         tid->chpid = card->info.chpid;
2970         ccw_device_get_id(CARD_RDEV(card), &ccwid);
2971         tid->ssid = ccwid.ssid;
2972         tid->devno = ccwid.devno;
2973         if (!info)
2974                 return;
2975
2976         rc = stsi(NULL, 0, 0, 0);
2977         if (rc == -ENOSYS)
2978                 level = rc;
2979         else
2980                 level = (((unsigned int) rc) >> 28);
2981
2982         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
2983                 tid->lparnr = info222->lpar_number;
2984
2985         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
2986                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2987                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2988         }
2989         free_page(info);
2990         return;
2991 }
2992
2993 static int qeth_hw_trap_cb(struct qeth_card *card,
2994                 struct qeth_reply *reply, unsigned long data)
2995 {
2996         struct qeth_ipa_cmd *cmd;
2997         __u16 rc;
2998
2999         cmd = (struct qeth_ipa_cmd *)data;
3000         rc = cmd->hdr.return_code;
3001         if (rc)
3002                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3003         return 0;
3004 }
3005
3006 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3007 {
3008         struct qeth_cmd_buffer *iob;
3009         struct qeth_ipa_cmd *cmd;
3010
3011         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3012         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3013         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3014         cmd->data.diagass.subcmd_len = 80;
3015         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3016         cmd->data.diagass.type = 1;
3017         cmd->data.diagass.action = action;
3018         switch (action) {
3019         case QETH_DIAGS_TRAP_ARM:
3020                 cmd->data.diagass.options = 0x0003;
3021                 cmd->data.diagass.ext = 0x00010000 +
3022                         sizeof(struct qeth_trap_id);
3023                 qeth_get_trap_id(card,
3024                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3025                 break;
3026         case QETH_DIAGS_TRAP_DISARM:
3027                 cmd->data.diagass.options = 0x0001;
3028                 break;
3029         case QETH_DIAGS_TRAP_CAPTURE:
3030                 break;
3031         }
3032         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3033 }
3034 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3035
3036 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3037                 unsigned int qdio_error, const char *dbftext)
3038 {
3039         if (qdio_error) {
3040                 QETH_CARD_TEXT(card, 2, dbftext);
3041                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3042                                buf->element[15].sflags);
3043                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3044                                buf->element[14].sflags);
3045                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3046                 if ((buf->element[15].sflags) == 0x12) {
3047                         card->stats.rx_dropped++;
3048                         return 0;
3049                 } else
3050                         return 1;
3051         }
3052         return 0;
3053 }
3054 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3055
3056 void qeth_buffer_reclaim_work(struct work_struct *work)
3057 {
3058         struct qeth_card *card = container_of(work, struct qeth_card,
3059                 buffer_reclaim_work.work);
3060
3061         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3062         qeth_queue_input_buffer(card, card->reclaim_index);
3063 }
3064
3065 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3066 {
3067         struct qeth_qdio_q *queue = card->qdio.in_q;
3068         struct list_head *lh;
3069         int count;
3070         int i;
3071         int rc;
3072         int newcount = 0;
3073
3074         count = (index < queue->next_buf_to_init)?
3075                 card->qdio.in_buf_pool.buf_count -
3076                 (queue->next_buf_to_init - index) :
3077                 card->qdio.in_buf_pool.buf_count -
3078                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3079         /* only requeue at a certain threshold to avoid SIGAs */
3080         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3081                 for (i = queue->next_buf_to_init;
3082                      i < queue->next_buf_to_init + count; ++i) {
3083                         if (qeth_init_input_buffer(card,
3084                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3085                                 break;
3086                         } else {
3087                                 newcount++;
3088                         }
3089                 }
3090
3091                 if (newcount < count) {
3092                         /* we are in memory shortage so we switch back to
3093                            traditional skb allocation and drop packages */
3094                         atomic_set(&card->force_alloc_skb, 3);
3095                         count = newcount;
3096                 } else {
3097                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3098                 }
3099
3100                 if (!count) {
3101                         i = 0;
3102                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3103                                 i++;
3104                         if (i == card->qdio.in_buf_pool.buf_count) {
3105                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3106                                 card->reclaim_index = index;
3107                                 schedule_delayed_work(
3108                                         &card->buffer_reclaim_work,
3109                                         QETH_RECLAIM_WORK_TIME);
3110                         }
3111                         return;
3112                 }
3113
3114                 /*
3115                  * according to old code it should be avoided to requeue all
3116                  * 128 buffers in order to benefit from PCI avoidance.
3117                  * this function keeps at least one buffer (the buffer at
3118                  * 'index') un-requeued -> this buffer is the first buffer that
3119                  * will be requeued the next time
3120                  */
3121                 if (card->options.performance_stats) {
3122                         card->perf_stats.inbound_do_qdio_cnt++;
3123                         card->perf_stats.inbound_do_qdio_start_time =
3124                                 qeth_get_micros();
3125                 }
3126                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3127                              queue->next_buf_to_init, count);
3128                 if (card->options.performance_stats)
3129                         card->perf_stats.inbound_do_qdio_time +=
3130                                 qeth_get_micros() -
3131                                 card->perf_stats.inbound_do_qdio_start_time;
3132                 if (rc) {
3133                         QETH_CARD_TEXT(card, 2, "qinberr");
3134                 }
3135                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3136                                           QDIO_MAX_BUFFERS_PER_Q;
3137         }
3138 }
3139 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3140
3141 static int qeth_handle_send_error(struct qeth_card *card,
3142                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3143 {
3144         int sbalf15 = buffer->buffer->element[15].sflags;
3145
3146         QETH_CARD_TEXT(card, 6, "hdsnderr");
3147         if (card->info.type == QETH_CARD_TYPE_IQD) {
3148                 if (sbalf15 == 0) {
3149                         qdio_err = 0;
3150                 } else {
3151                         qdio_err = 1;
3152                 }
3153         }
3154         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3155
3156         if (!qdio_err)
3157                 return QETH_SEND_ERROR_NONE;
3158
3159         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3160                 return QETH_SEND_ERROR_RETRY;
3161
3162         QETH_CARD_TEXT(card, 1, "lnkfail");
3163         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3164                        (u16)qdio_err, (u8)sbalf15);
3165         return QETH_SEND_ERROR_LINK_FAILURE;
3166 }
3167
3168 /*
3169  * Switched to packing state if the number of used buffers on a queue
3170  * reaches a certain limit.
3171  */
3172 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3173 {
3174         if (!queue->do_pack) {
3175                 if (atomic_read(&queue->used_buffers)
3176                     >= QETH_HIGH_WATERMARK_PACK){
3177                         /* switch non-PACKING -> PACKING */
3178                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3179                         if (queue->card->options.performance_stats)
3180                                 queue->card->perf_stats.sc_dp_p++;
3181                         queue->do_pack = 1;
3182                 }
3183         }
3184 }
3185
3186 /*
3187  * Switches from packing to non-packing mode. If there is a packing
3188  * buffer on the queue this buffer will be prepared to be flushed.
3189  * In that case 1 is returned to inform the caller. If no buffer
3190  * has to be flushed, zero is returned.
3191  */
3192 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3193 {
3194         struct qeth_qdio_out_buffer *buffer;
3195         int flush_count = 0;
3196
3197         if (queue->do_pack) {
3198                 if (atomic_read(&queue->used_buffers)
3199                     <= QETH_LOW_WATERMARK_PACK) {
3200                         /* switch PACKING -> non-PACKING */
3201                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3202                         if (queue->card->options.performance_stats)
3203                                 queue->card->perf_stats.sc_p_dp++;
3204                         queue->do_pack = 0;
3205                         /* flush packing buffers */
3206                         buffer = queue->bufs[queue->next_buf_to_fill];
3207                         if ((atomic_read(&buffer->state) ==
3208                                                 QETH_QDIO_BUF_EMPTY) &&
3209                             (buffer->next_element_to_fill > 0)) {
3210                                 atomic_set(&buffer->state,
3211                                            QETH_QDIO_BUF_PRIMED);
3212                                 flush_count++;
3213                                 queue->next_buf_to_fill =
3214                                         (queue->next_buf_to_fill + 1) %
3215                                         QDIO_MAX_BUFFERS_PER_Q;
3216                         }
3217                 }
3218         }
3219         return flush_count;
3220 }
3221
3222
3223 /*
3224  * Called to flush a packing buffer if no more pci flags are on the queue.
3225  * Checks if there is a packing buffer and prepares it to be flushed.
3226  * In that case returns 1, otherwise zero.
3227  */
3228 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3229 {
3230         struct qeth_qdio_out_buffer *buffer;
3231
3232         buffer = queue->bufs[queue->next_buf_to_fill];
3233         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3234            (buffer->next_element_to_fill > 0)) {
3235                 /* it's a packing buffer */
3236                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3237                 queue->next_buf_to_fill =
3238                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3239                 return 1;
3240         }
3241         return 0;
3242 }
3243
3244 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3245                                int count)
3246 {
3247         struct qeth_qdio_out_buffer *buf;
3248         int rc;
3249         int i;
3250         unsigned int qdio_flags;
3251
3252         for (i = index; i < index + count; ++i) {
3253                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3254                 buf = queue->bufs[bidx];
3255                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3256                                 SBAL_EFLAGS_LAST_ENTRY;
3257
3258                 if (queue->bufstates)
3259                         queue->bufstates[bidx].user = buf;
3260
3261                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3262                         continue;
3263
3264                 if (!queue->do_pack) {
3265                         if ((atomic_read(&queue->used_buffers) >=
3266                                 (QETH_HIGH_WATERMARK_PACK -
3267                                  QETH_WATERMARK_PACK_FUZZ)) &&
3268                             !atomic_read(&queue->set_pci_flags_count)) {
3269                                 /* it's likely that we'll go to packing
3270                                  * mode soon */
3271                                 atomic_inc(&queue->set_pci_flags_count);
3272                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3273                         }
3274                 } else {
3275                         if (!atomic_read(&queue->set_pci_flags_count)) {
3276                                 /*
3277                                  * there's no outstanding PCI any more, so we
3278                                  * have to request a PCI to be sure the the PCI
3279                                  * will wake at some time in the future then we
3280                                  * can flush packed buffers that might still be
3281                                  * hanging around, which can happen if no
3282                                  * further send was requested by the stack
3283                                  */
3284                                 atomic_inc(&queue->set_pci_flags_count);
3285                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3286                         }
3287                 }
3288         }
3289
3290         queue->card->dev->trans_start = jiffies;
3291         if (queue->card->options.performance_stats) {
3292                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3293                 queue->card->perf_stats.outbound_do_qdio_start_time =
3294                         qeth_get_micros();
3295         }
3296         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3297         if (atomic_read(&queue->set_pci_flags_count))
3298                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3299         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3300                      queue->queue_no, index, count);
3301         if (queue->card->options.performance_stats)
3302                 queue->card->perf_stats.outbound_do_qdio_time +=
3303                         qeth_get_micros() -
3304                         queue->card->perf_stats.outbound_do_qdio_start_time;
3305         atomic_add(count, &queue->used_buffers);
3306         if (rc) {
3307                 queue->card->stats.tx_errors += count;
3308                 /* ignore temporary SIGA errors without busy condition */
3309                 if (rc == QDIO_ERROR_SIGA_TARGET)
3310                         return;
3311                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3312                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3313                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3314                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3315                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3316
3317                 /* this must not happen under normal circumstances. if it
3318                  * happens something is really wrong -> recover */
3319                 qeth_schedule_recovery(queue->card);
3320                 return;
3321         }
3322         if (queue->card->options.performance_stats)
3323                 queue->card->perf_stats.bufs_sent += count;
3324 }
3325
3326 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3327 {
3328         int index;
3329         int flush_cnt = 0;
3330         int q_was_packing = 0;
3331
3332         /*
3333          * check if weed have to switch to non-packing mode or if
3334          * we have to get a pci flag out on the queue
3335          */
3336         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3337             !atomic_read(&queue->set_pci_flags_count)) {
3338                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3339                                 QETH_OUT_Q_UNLOCKED) {
3340                         /*
3341                          * If we get in here, there was no action in
3342                          * do_send_packet. So, we check if there is a
3343                          * packing buffer to be flushed here.
3344                          */
3345                         netif_stop_queue(queue->card->dev);
3346                         index = queue->next_buf_to_fill;
3347                         q_was_packing = queue->do_pack;
3348                         /* queue->do_pack may change */
3349                         barrier();
3350                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3351                         if (!flush_cnt &&
3352                             !atomic_read(&queue->set_pci_flags_count))
3353                                 flush_cnt +=
3354                                         qeth_flush_buffers_on_no_pci(queue);
3355                         if (queue->card->options.performance_stats &&
3356                             q_was_packing)
3357                                 queue->card->perf_stats.bufs_sent_pack +=
3358                                         flush_cnt;
3359                         if (flush_cnt)
3360                                 qeth_flush_buffers(queue, index, flush_cnt);
3361                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3362                 }
3363         }
3364 }
3365
3366 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3367                 unsigned long card_ptr)
3368 {
3369         struct qeth_card *card = (struct qeth_card *)card_ptr;
3370
3371         if (card->dev && (card->dev->flags & IFF_UP))
3372                 napi_schedule(&card->napi);
3373 }
3374 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3375
3376 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3377 {
3378         int rc;
3379
3380         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3381                 rc = -1;
3382                 goto out;
3383         } else {
3384                 if (card->options.cq == cq) {
3385                         rc = 0;
3386                         goto out;
3387                 }
3388
3389                 if (card->state != CARD_STATE_DOWN &&
3390                     card->state != CARD_STATE_RECOVER) {
3391                         rc = -1;
3392                         goto out;
3393                 }
3394
3395                 qeth_free_qdio_buffers(card);
3396                 card->options.cq = cq;
3397                 rc = 0;
3398         }
3399 out:
3400         return rc;
3401
3402 }
3403 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3404
3405
3406 static void qeth_qdio_cq_handler(struct qeth_card *card,
3407                 unsigned int qdio_err,
3408                 unsigned int queue, int first_element, int count) {
3409         struct qeth_qdio_q *cq = card->qdio.c_q;
3410         int i;
3411         int rc;
3412
3413         if (!qeth_is_cq(card, queue))
3414                 goto out;
3415
3416         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3417         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3418         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3419
3420         if (qdio_err) {
3421                 netif_stop_queue(card->dev);
3422                 qeth_schedule_recovery(card);
3423                 goto out;
3424         }
3425
3426         if (card->options.performance_stats) {
3427                 card->perf_stats.cq_cnt++;
3428                 card->perf_stats.cq_start_time = qeth_get_micros();
3429         }
3430
3431         for (i = first_element; i < first_element + count; ++i) {
3432                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3433                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3434                 int e;
3435
3436                 e = 0;
3437                 while (buffer->element[e].addr) {
3438                         unsigned long phys_aob_addr;
3439
3440                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3441                         qeth_qdio_handle_aob(card, phys_aob_addr);
3442                         buffer->element[e].addr = NULL;
3443                         buffer->element[e].eflags = 0;
3444                         buffer->element[e].sflags = 0;
3445                         buffer->element[e].length = 0;
3446
3447                         ++e;
3448                 }
3449
3450                 buffer->element[15].eflags = 0;
3451                 buffer->element[15].sflags = 0;
3452         }
3453         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3454                     card->qdio.c_q->next_buf_to_init,
3455                     count);
3456         if (rc) {
3457                 dev_warn(&card->gdev->dev,
3458                         "QDIO reported an error, rc=%i\n", rc);
3459                 QETH_CARD_TEXT(card, 2, "qcqherr");
3460         }
3461         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3462                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3463
3464         netif_wake_queue(card->dev);
3465
3466         if (card->options.performance_stats) {
3467                 int delta_t = qeth_get_micros();
3468                 delta_t -= card->perf_stats.cq_start_time;
3469                 card->perf_stats.cq_time += delta_t;
3470         }
3471 out:
3472         return;
3473 }
3474
3475 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3476                 unsigned int queue, int first_elem, int count,
3477                 unsigned long card_ptr)
3478 {
3479         struct qeth_card *card = (struct qeth_card *)card_ptr;
3480
3481         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3482         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3483
3484         if (qeth_is_cq(card, queue))
3485                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3486         else if (qdio_err)
3487                 qeth_schedule_recovery(card);
3488
3489
3490 }
3491 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3492
3493 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3494                 unsigned int qdio_error, int __queue, int first_element,
3495                 int count, unsigned long card_ptr)
3496 {
3497         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3498         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3499         struct qeth_qdio_out_buffer *buffer;
3500         int i;
3501
3502         QETH_CARD_TEXT(card, 6, "qdouhdl");
3503         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3504                 QETH_CARD_TEXT(card, 2, "achkcond");
3505                 netif_stop_queue(card->dev);
3506                 qeth_schedule_recovery(card);
3507                 return;
3508         }
3509         if (card->options.performance_stats) {
3510                 card->perf_stats.outbound_handler_cnt++;
3511                 card->perf_stats.outbound_handler_start_time =
3512                         qeth_get_micros();
3513         }
3514         for (i = first_element; i < (first_element + count); ++i) {
3515                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3516                 buffer = queue->bufs[bidx];
3517                 qeth_handle_send_error(card, buffer, qdio_error);
3518
3519                 if (queue->bufstates &&
3520                     (queue->bufstates[bidx].flags &
3521                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3522                         BUG_ON(card->options.cq != QETH_CQ_ENABLED);
3523
3524                         if (atomic_cmpxchg(&buffer->state,
3525                                            QETH_QDIO_BUF_PRIMED,
3526                                            QETH_QDIO_BUF_PENDING) ==
3527                                 QETH_QDIO_BUF_PRIMED) {
3528                                 qeth_notify_skbs(queue, buffer,
3529                                                  TX_NOTIFY_PENDING);
3530                         }
3531                         buffer->aob = queue->bufstates[bidx].aob;
3532                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3533                         QETH_CARD_TEXT(queue->card, 5, "aob");
3534                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3535                                         virt_to_phys(buffer->aob));
3536                         BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3537                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3538                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3539                                 qeth_schedule_recovery(card);
3540                         }
3541                 } else {
3542                         if (card->options.cq == QETH_CQ_ENABLED) {
3543                                 enum iucv_tx_notify n;
3544
3545                                 n = qeth_compute_cq_notification(
3546                                         buffer->buffer->element[15].sflags, 0);
3547                                 qeth_notify_skbs(queue, buffer, n);
3548                         }
3549
3550                         qeth_clear_output_buffer(queue, buffer,
3551                                                 QETH_QDIO_BUF_EMPTY);
3552                 }
3553                 qeth_cleanup_handled_pending(queue, bidx, 0);
3554         }
3555         atomic_sub(count, &queue->used_buffers);
3556         /* check if we need to do something on this outbound queue */
3557         if (card->info.type != QETH_CARD_TYPE_IQD)
3558                 qeth_check_outbound_queue(queue);
3559
3560         netif_wake_queue(queue->card->dev);
3561         if (card->options.performance_stats)
3562                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3563                         card->perf_stats.outbound_handler_start_time;
3564 }
3565 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3566
3567 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3568                         int ipv, int cast_type)
3569 {
3570         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3571                      card->info.type == QETH_CARD_TYPE_OSX))
3572                 return card->qdio.default_out_queue;
3573         switch (card->qdio.no_out_queues) {
3574         case 4:
3575                 if (cast_type && card->info.is_multicast_different)
3576                         return card->info.is_multicast_different &
3577                                 (card->qdio.no_out_queues - 1);
3578                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3579                         const u8 tos = ip_hdr(skb)->tos;
3580
3581                         if (card->qdio.do_prio_queueing ==
3582                                 QETH_PRIO_Q_ING_TOS) {
3583                                 if (tos & IP_TOS_NOTIMPORTANT)
3584                                         return 3;
3585                                 if (tos & IP_TOS_HIGHRELIABILITY)
3586                                         return 2;
3587                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3588                                         return 1;
3589                                 if (tos & IP_TOS_LOWDELAY)
3590                                         return 0;
3591                         }
3592                         if (card->qdio.do_prio_queueing ==
3593                                 QETH_PRIO_Q_ING_PREC)
3594                                 return 3 - (tos >> 6);
3595                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3596                         /* TODO: IPv6!!! */
3597                 }
3598                 return card->qdio.default_out_queue;
3599         case 1: /* fallthrough for single-out-queue 1920-device */
3600         default:
3601                 return card->qdio.default_out_queue;
3602         }
3603 }
3604 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3605
3606 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3607                      struct sk_buff *skb, int elems)
3608 {
3609         int dlen = skb->len - skb->data_len;
3610         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3611                 PFN_DOWN((unsigned long)skb->data);
3612
3613         elements_needed += skb_shinfo(skb)->nr_frags;
3614         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3615                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3616                         "(Number=%d / Length=%d). Discarded.\n",
3617                         (elements_needed+elems), skb->len);
3618                 return 0;
3619         }
3620         return elements_needed;
3621 }
3622 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3623
3624 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3625 {
3626         int hroom, inpage, rest;
3627
3628         if (((unsigned long)skb->data & PAGE_MASK) !=
3629             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3630                 hroom = skb_headroom(skb);
3631                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3632                 rest = len - inpage;
3633                 if (rest > hroom)
3634                         return 1;
3635                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3636                 skb->data -= rest;
3637                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3638         }
3639         return 0;
3640 }
3641 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3642
3643 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3644         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3645         int offset)
3646 {
3647         int length = skb->len - skb->data_len;
3648         int length_here;
3649         int element;
3650         char *data;
3651         int first_lap, cnt;
3652         struct skb_frag_struct *frag;
3653
3654         element = *next_element_to_fill;
3655         data = skb->data;
3656         first_lap = (is_tso == 0 ? 1 : 0);
3657
3658         if (offset >= 0) {
3659                 data = skb->data + offset;
3660                 length -= offset;
3661                 first_lap = 0;
3662         }
3663
3664         while (length > 0) {
3665                 /* length_here is the remaining amount of data in this page */
3666                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3667                 if (length < length_here)
3668                         length_here = length;
3669
3670                 buffer->element[element].addr = data;
3671                 buffer->element[element].length = length_here;
3672                 length -= length_here;
3673                 if (!length) {
3674                         if (first_lap)
3675                                 if (skb_shinfo(skb)->nr_frags)
3676                                         buffer->element[element].eflags =
3677                                                 SBAL_EFLAGS_FIRST_FRAG;
3678                                 else
3679                                         buffer->element[element].eflags = 0;
3680                         else
3681                                 buffer->element[element].eflags =
3682                                     SBAL_EFLAGS_MIDDLE_FRAG;
3683                 } else {
3684                         if (first_lap)
3685                                 buffer->element[element].eflags =
3686                                     SBAL_EFLAGS_FIRST_FRAG;
3687                         else
3688                                 buffer->element[element].eflags =
3689                                     SBAL_EFLAGS_MIDDLE_FRAG;
3690                 }
3691                 data += length_here;
3692                 element++;
3693                 first_lap = 0;
3694         }
3695
3696         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3697                 frag = &skb_shinfo(skb)->frags[cnt];
3698                 buffer->element[element].addr = (char *)
3699                         page_to_phys(skb_frag_page(frag))
3700                         + frag->page_offset;
3701                 buffer->element[element].length = frag->size;
3702                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3703                 element++;
3704         }
3705
3706         if (buffer->element[element - 1].eflags)
3707                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3708         *next_element_to_fill = element;
3709 }
3710
3711 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3712                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3713                 struct qeth_hdr *hdr, int offset, int hd_len)
3714 {
3715         struct qdio_buffer *buffer;
3716         int flush_cnt = 0, hdr_len, large_send = 0;
3717
3718         buffer = buf->buffer;
3719         atomic_inc(&skb->users);
3720         skb_queue_tail(&buf->skb_list, skb);
3721
3722         /*check first on TSO ....*/
3723         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3724                 int element = buf->next_element_to_fill;
3725
3726                 hdr_len = sizeof(struct qeth_hdr_tso) +
3727                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3728                 /*fill first buffer entry only with header information */
3729                 buffer->element[element].addr = skb->data;
3730                 buffer->element[element].length = hdr_len;
3731                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3732                 buf->next_element_to_fill++;
3733                 skb->data += hdr_len;
3734                 skb->len  -= hdr_len;
3735                 large_send = 1;
3736         }
3737
3738         if (offset >= 0) {
3739                 int element = buf->next_element_to_fill;
3740                 buffer->element[element].addr = hdr;
3741                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3742                                                         hd_len;
3743                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3744                 buf->is_header[element] = 1;
3745                 buf->next_element_to_fill++;
3746         }
3747
3748         __qeth_fill_buffer(skb, buffer, large_send,
3749                 (int *)&buf->next_element_to_fill, offset);
3750
3751         if (!queue->do_pack) {
3752                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3753                 /* set state to PRIMED -> will be flushed */
3754                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3755                 flush_cnt = 1;
3756         } else {
3757                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3758                 if (queue->card->options.performance_stats)
3759                         queue->card->perf_stats.skbs_sent_pack++;
3760                 if (buf->next_element_to_fill >=
3761                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3762                         /*
3763                          * packed buffer if full -> set state PRIMED
3764                          * -> will be flushed
3765                          */
3766                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3767                         flush_cnt = 1;
3768                 }
3769         }
3770         return flush_cnt;
3771 }
3772
3773 int qeth_do_send_packet_fast(struct qeth_card *card,
3774                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3775                 struct qeth_hdr *hdr, int elements_needed,
3776                 int offset, int hd_len)
3777 {
3778         struct qeth_qdio_out_buffer *buffer;
3779         int index;
3780
3781         /* spin until we get the queue ... */
3782         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3783                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3784         /* ... now we've got the queue */
3785         index = queue->next_buf_to_fill;
3786         buffer = queue->bufs[queue->next_buf_to_fill];
3787         /*
3788          * check if buffer is empty to make sure that we do not 'overtake'
3789          * ourselves and try to fill a buffer that is already primed
3790          */
3791         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3792                 goto out;
3793         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3794                                           QDIO_MAX_BUFFERS_PER_Q;
3795         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3796         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3797         qeth_flush_buffers(queue, index, 1);
3798         return 0;
3799 out:
3800         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3801         return -EBUSY;
3802 }
3803 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3804
3805 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3806                 struct sk_buff *skb, struct qeth_hdr *hdr,
3807                 int elements_needed)
3808 {
3809         struct qeth_qdio_out_buffer *buffer;
3810         int start_index;
3811         int flush_count = 0;
3812         int do_pack = 0;
3813         int tmp;
3814         int rc = 0;
3815
3816         /* spin until we get the queue ... */
3817         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3818                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3819         start_index = queue->next_buf_to_fill;
3820         buffer = queue->bufs[queue->next_buf_to_fill];
3821         /*
3822          * check if buffer is empty to make sure that we do not 'overtake'
3823          * ourselves and try to fill a buffer that is already primed
3824          */
3825         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3826                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3827                 return -EBUSY;
3828         }
3829         /* check if we need to switch packing state of this queue */
3830         qeth_switch_to_packing_if_needed(queue);
3831         if (queue->do_pack) {
3832                 do_pack = 1;
3833                 /* does packet fit in current buffer? */
3834                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3835                     buffer->next_element_to_fill) < elements_needed) {
3836                         /* ... no -> set state PRIMED */
3837                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3838                         flush_count++;
3839                         queue->next_buf_to_fill =
3840                                 (queue->next_buf_to_fill + 1) %
3841                                 QDIO_MAX_BUFFERS_PER_Q;
3842                         buffer = queue->bufs[queue->next_buf_to_fill];
3843                         /* we did a step forward, so check buffer state
3844                          * again */
3845                         if (atomic_read(&buffer->state) !=
3846                             QETH_QDIO_BUF_EMPTY) {
3847                                 qeth_flush_buffers(queue, start_index,
3848                                                            flush_count);
3849                                 atomic_set(&queue->state,
3850                                                 QETH_OUT_Q_UNLOCKED);
3851                                 return -EBUSY;
3852                         }
3853                 }
3854         }
3855         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3856         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3857                                   QDIO_MAX_BUFFERS_PER_Q;
3858         flush_count += tmp;
3859         if (flush_count)
3860                 qeth_flush_buffers(queue, start_index, flush_count);
3861         else if (!atomic_read(&queue->set_pci_flags_count))
3862                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3863         /*
3864          * queue->state will go from LOCKED -> UNLOCKED or from
3865          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3866          * (switch packing state or flush buffer to get another pci flag out).
3867          * In that case we will enter this loop
3868          */
3869         while (atomic_dec_return(&queue->state)) {
3870                 flush_count = 0;
3871                 start_index = queue->next_buf_to_fill;
3872                 /* check if we can go back to non-packing state */
3873                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3874                 /*
3875                  * check if we need to flush a packing buffer to get a pci
3876                  * flag out on the queue
3877                  */
3878                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3879                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3880                 if (flush_count)
3881                         qeth_flush_buffers(queue, start_index, flush_count);
3882         }
3883         /* at this point the queue is UNLOCKED again */
3884         if (queue->card->options.performance_stats && do_pack)
3885                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3886
3887         return rc;
3888 }
3889 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3890
3891 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3892                 struct qeth_reply *reply, unsigned long data)
3893 {
3894         struct qeth_ipa_cmd *cmd;
3895         struct qeth_ipacmd_setadpparms *setparms;
3896
3897         QETH_CARD_TEXT(card, 4, "prmadpcb");
3898
3899         cmd = (struct qeth_ipa_cmd *) data;
3900         setparms = &(cmd->data.setadapterparms);
3901
3902         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3903         if (cmd->hdr.return_code) {
3904                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3905                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3906         }
3907         card->info.promisc_mode = setparms->data.mode;
3908         return 0;
3909 }
3910
3911 void qeth_setadp_promisc_mode(struct qeth_card *card)
3912 {
3913         enum qeth_ipa_promisc_modes mode;
3914         struct net_device *dev = card->dev;
3915         struct qeth_cmd_buffer *iob;
3916         struct qeth_ipa_cmd *cmd;
3917
3918         QETH_CARD_TEXT(card, 4, "setprom");
3919
3920         if (((dev->flags & IFF_PROMISC) &&
3921              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3922             (!(dev->flags & IFF_PROMISC) &&
3923              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3924                 return;
3925         mode = SET_PROMISC_MODE_OFF;
3926         if (dev->flags & IFF_PROMISC)
3927                 mode = SET_PROMISC_MODE_ON;
3928         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3929
3930         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3931                         sizeof(struct qeth_ipacmd_setadpparms));
3932         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3933         cmd->data.setadapterparms.data.mode = mode;
3934         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3935 }
3936 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3937
3938 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3939 {
3940         struct qeth_card *card;
3941         char dbf_text[15];
3942
3943         card = dev->ml_priv;
3944
3945         QETH_CARD_TEXT(card, 4, "chgmtu");
3946         sprintf(dbf_text, "%8x", new_mtu);
3947         QETH_CARD_TEXT(card, 4, dbf_text);
3948
3949         if (new_mtu < 64)
3950                 return -EINVAL;
3951         if (new_mtu > 65535)
3952                 return -EINVAL;
3953         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3954             (!qeth_mtu_is_valid(card, new_mtu)))
3955                 return -EINVAL;
3956         dev->mtu = new_mtu;
3957         return 0;
3958 }
3959 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3960
3961 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3962 {
3963         struct qeth_card *card;
3964
3965         card = dev->ml_priv;
3966
3967         QETH_CARD_TEXT(card, 5, "getstat");
3968
3969         return &card->stats;
3970 }
3971 EXPORT_SYMBOL_GPL(qeth_get_stats);
3972
3973 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3974                 struct qeth_reply *reply, unsigned long data)
3975 {
3976         struct qeth_ipa_cmd *cmd;
3977
3978         QETH_CARD_TEXT(card, 4, "chgmaccb");
3979
3980         cmd = (struct qeth_ipa_cmd *) data;
3981         if (!card->options.layer2 ||
3982             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3983                 memcpy(card->dev->dev_addr,
3984                        &cmd->data.setadapterparms.data.change_addr.addr,
3985                        OSA_ADDR_LEN);
3986                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3987         }
3988         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3989         return 0;
3990 }
3991
3992 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3993 {
3994         int rc;
3995         struct qeth_cmd_buffer *iob;
3996         struct qeth_ipa_cmd *cmd;
3997
3998         QETH_CARD_TEXT(card, 4, "chgmac");
3999
4000         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4001                                    sizeof(struct qeth_ipacmd_setadpparms));
4002         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4003         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4004         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4005         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4006                card->dev->dev_addr, OSA_ADDR_LEN);
4007         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4008                                NULL);
4009         return rc;
4010 }
4011 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4012
4013 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4014                 struct qeth_reply *reply, unsigned long data)
4015 {
4016         struct qeth_ipa_cmd *cmd;
4017         struct qeth_set_access_ctrl *access_ctrl_req;
4018
4019         QETH_CARD_TEXT(card, 4, "setaccb");
4020
4021         cmd = (struct qeth_ipa_cmd *) data;
4022         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4023         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4024         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4025         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4026                 cmd->data.setadapterparms.hdr.return_code);
4027         switch (cmd->data.setadapterparms.hdr.return_code) {
4028         case SET_ACCESS_CTRL_RC_SUCCESS:
4029         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4030         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4031         {
4032                 card->options.isolation = access_ctrl_req->subcmd_code;
4033                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4034                         dev_info(&card->gdev->dev,
4035                             "QDIO data connection isolation is deactivated\n");
4036                 } else {
4037                         dev_info(&card->gdev->dev,
4038                             "QDIO data connection isolation is activated\n");
4039                 }
4040                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
4041                         card->gdev->dev.kobj.name,
4042                         access_ctrl_req->subcmd_code,
4043                         cmd->data.setadapterparms.hdr.return_code);
4044                 break;
4045         }
4046         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4047         {
4048                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4049                         card->gdev->dev.kobj.name,
4050                         access_ctrl_req->subcmd_code,
4051                         cmd->data.setadapterparms.hdr.return_code);
4052                 dev_err(&card->gdev->dev, "Adapter does not "
4053                         "support QDIO data connection isolation\n");
4054
4055                 /* ensure isolation mode is "none" */
4056                 card->options.isolation = ISOLATION_MODE_NONE;
4057                 break;
4058         }
4059         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4060         {
4061                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4062                         card->gdev->dev.kobj.name,
4063                         access_ctrl_req->subcmd_code,
4064                         cmd->data.setadapterparms.hdr.return_code);
4065                 dev_err(&card->gdev->dev,
4066                         "Adapter is dedicated. "
4067                         "QDIO data connection isolation not supported\n");
4068
4069                 /* ensure isolation mode is "none" */
4070                 card->options.isolation = ISOLATION_MODE_NONE;
4071                 break;
4072         }
4073         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4074         {
4075                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4076                         card->gdev->dev.kobj.name,
4077                         access_ctrl_req->subcmd_code,
4078                         cmd->data.setadapterparms.hdr.return_code);
4079                 dev_err(&card->gdev->dev,
4080                         "TSO does not permit QDIO data connection isolation\n");
4081
4082                 /* ensure isolation mode is "none" */
4083                 card->options.isolation = ISOLATION_MODE_NONE;
4084                 break;
4085         }
4086         default:
4087         {
4088                 /* this should never happen */
4089                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
4090                         "==UNKNOWN\n",
4091                         card->gdev->dev.kobj.name,
4092                         access_ctrl_req->subcmd_code,
4093                         cmd->data.setadapterparms.hdr.return_code);
4094
4095                 /* ensure isolation mode is "none" */
4096                 card->options.isolation = ISOLATION_MODE_NONE;
4097                 break;
4098         }
4099         }
4100         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4101         return 0;
4102 }
4103
4104 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4105                 enum qeth_ipa_isolation_modes isolation)
4106 {
4107         int rc;
4108         struct qeth_cmd_buffer *iob;
4109         struct qeth_ipa_cmd *cmd;
4110         struct qeth_set_access_ctrl *access_ctrl_req;
4111
4112         QETH_CARD_TEXT(card, 4, "setacctl");
4113
4114         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4115         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4116
4117         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4118                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4119                                    sizeof(struct qeth_set_access_ctrl));
4120         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4121         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4122         access_ctrl_req->subcmd_code = isolation;
4123
4124         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4125                                NULL);
4126         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4127         return rc;
4128 }
4129
4130 int qeth_set_access_ctrl_online(struct qeth_card *card)
4131 {
4132         int rc = 0;
4133
4134         QETH_CARD_TEXT(card, 4, "setactlo");
4135
4136         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4137              card->info.type == QETH_CARD_TYPE_OSX) &&
4138              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4139                 rc = qeth_setadpparms_set_access_ctrl(card,
4140                         card->options.isolation);
4141                 if (rc) {
4142                         QETH_DBF_MESSAGE(3,
4143                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4144                                 card->gdev->dev.kobj.name,
4145                                 rc);
4146                 }
4147         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4148                 card->options.isolation = ISOLATION_MODE_NONE;
4149
4150                 dev_err(&card->gdev->dev, "Adapter does not "
4151                         "support QDIO data connection isolation\n");
4152                 rc = -EOPNOTSUPP;
4153         }
4154         return rc;
4155 }
4156 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4157
4158 void qeth_tx_timeout(struct net_device *dev)
4159 {
4160         struct qeth_card *card;
4161
4162         card = dev->ml_priv;
4163         QETH_CARD_TEXT(card, 4, "txtimeo");
4164         card->stats.tx_errors++;
4165         qeth_schedule_recovery(card);
4166 }
4167 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4168
4169 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4170 {
4171         struct qeth_card *card = dev->ml_priv;
4172         int rc = 0;
4173
4174         switch (regnum) {
4175         case MII_BMCR: /* Basic mode control register */
4176                 rc = BMCR_FULLDPLX;
4177                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4178                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4179                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4180                         rc |= BMCR_SPEED100;
4181                 break;
4182         case MII_BMSR: /* Basic mode status register */
4183                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4184                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4185                      BMSR_100BASE4;
4186                 break;
4187         case MII_PHYSID1: /* PHYS ID 1 */
4188                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4189                      dev->dev_addr[2];
4190                 rc = (rc >> 5) & 0xFFFF;
4191                 break;
4192         case MII_PHYSID2: /* PHYS ID 2 */
4193                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4194                 break;
4195         case MII_ADVERTISE: /* Advertisement control reg */
4196                 rc = ADVERTISE_ALL;
4197                 break;
4198         case MII_LPA: /* Link partner ability reg */
4199                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4200                      LPA_100BASE4 | LPA_LPACK;
4201                 break;
4202         case MII_EXPANSION: /* Expansion register */
4203                 break;
4204         case MII_DCOUNTER: /* disconnect counter */
4205                 break;
4206         case MII_FCSCOUNTER: /* false carrier counter */
4207                 break;
4208         case MII_NWAYTEST: /* N-way auto-neg test register */
4209                 break;
4210         case MII_RERRCOUNTER: /* rx error counter */
4211                 rc = card->stats.rx_errors;
4212                 break;
4213         case MII_SREVISION: /* silicon revision */
4214                 break;
4215         case MII_RESV1: /* reserved 1 */
4216                 break;
4217         case MII_LBRERROR: /* loopback, rx, bypass error */
4218                 break;
4219         case MII_PHYADDR: /* physical address */
4220                 break;
4221         case MII_RESV2: /* reserved 2 */
4222                 break;
4223         case MII_TPISTATUS: /* TPI status for 10mbps */
4224                 break;
4225         case MII_NCONFIG: /* network interface config */
4226                 break;
4227         default:
4228                 break;
4229         }
4230         return rc;
4231 }
4232 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4233
4234 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4235                 struct qeth_cmd_buffer *iob, int len,
4236                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4237                         unsigned long),
4238                 void *reply_param)
4239 {
4240         u16 s1, s2;
4241
4242         QETH_CARD_TEXT(card, 4, "sendsnmp");
4243
4244         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4245         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4246                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4247         /* adjust PDU length fields in IPA_PDU_HEADER */
4248         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4249         s2 = (u32) len;
4250         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4251         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4252         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4253         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4254         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4255                                       reply_cb, reply_param);
4256 }
4257
4258 static int qeth_snmp_command_cb(struct qeth_card *card,
4259                 struct qeth_reply *reply, unsigned long sdata)
4260 {
4261         struct qeth_ipa_cmd *cmd;
4262         struct qeth_arp_query_info *qinfo;
4263         struct qeth_snmp_cmd *snmp;
4264         unsigned char *data;
4265         __u16 data_len;
4266
4267         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4268
4269         cmd = (struct qeth_ipa_cmd *) sdata;
4270         data = (unsigned char *)((char *)cmd - reply->offset);
4271         qinfo = (struct qeth_arp_query_info *) reply->param;
4272         snmp = &cmd->data.setadapterparms.data.snmp;
4273
4274         if (cmd->hdr.return_code) {
4275                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4276                 return 0;
4277         }
4278         if (cmd->data.setadapterparms.hdr.return_code) {
4279                 cmd->hdr.return_code =
4280                         cmd->data.setadapterparms.hdr.return_code;
4281                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4282                 return 0;
4283         }
4284         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4285         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4286                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4287         else
4288                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4289
4290         /* check if there is enough room in userspace */
4291         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4292                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4293                 cmd->hdr.return_code = -ENOMEM;
4294                 return 0;
4295         }
4296         QETH_CARD_TEXT_(card, 4, "snore%i",
4297                        cmd->data.setadapterparms.hdr.used_total);
4298         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4299                 cmd->data.setadapterparms.hdr.seq_no);
4300         /*copy entries to user buffer*/
4301         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4302                 memcpy(qinfo->udata + qinfo->udata_offset,
4303                        (char *)snmp,
4304                        data_len + offsetof(struct qeth_snmp_cmd, data));
4305                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4306         } else {
4307                 memcpy(qinfo->udata + qinfo->udata_offset,
4308                        (char *)&snmp->request, data_len);
4309         }
4310         qinfo->udata_offset += data_len;
4311         /* check if all replies received ... */
4312                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4313                                cmd->data.setadapterparms.hdr.used_total);
4314                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4315                                cmd->data.setadapterparms.hdr.seq_no);
4316         if (cmd->data.setadapterparms.hdr.seq_no <
4317             cmd->data.setadapterparms.hdr.used_total)
4318                 return 1;
4319         return 0;
4320 }
4321
4322 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4323 {
4324         struct qeth_cmd_buffer *iob;
4325         struct qeth_ipa_cmd *cmd;
4326         struct qeth_snmp_ureq *ureq;
4327         unsigned int req_len;
4328         struct qeth_arp_query_info qinfo = {0, };
4329         int rc = 0;
4330
4331         QETH_CARD_TEXT(card, 3, "snmpcmd");
4332
4333         if (card->info.guestlan)
4334                 return -EOPNOTSUPP;
4335
4336         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4337             (!card->options.layer2)) {
4338                 return -EOPNOTSUPP;
4339         }
4340         /* skip 4 bytes (data_len struct member) to get req_len */
4341         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4342                 return -EFAULT;
4343         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4344                        sizeof(struct qeth_ipacmd_hdr) -
4345                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4346                 return -EINVAL;
4347         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4348         if (IS_ERR(ureq)) {
4349                 QETH_CARD_TEXT(card, 2, "snmpnome");
4350                 return PTR_ERR(ureq);
4351         }
4352         qinfo.udata_len = ureq->hdr.data_len;
4353         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4354         if (!qinfo.udata) {
4355                 kfree(ureq);
4356                 return -ENOMEM;
4357         }
4358         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4359
4360         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4361                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4362         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4363         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4364         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4365                                     qeth_snmp_command_cb, (void *)&qinfo);
4366         if (rc)
4367                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4368                            QETH_CARD_IFNAME(card), rc);
4369         else {
4370                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4371                         rc = -EFAULT;
4372         }
4373
4374         kfree(ureq);
4375         kfree(qinfo.udata);
4376         return rc;
4377 }
4378 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4379
4380 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4381 {
4382         switch (card->info.type) {
4383         case QETH_CARD_TYPE_IQD:
4384                 return 2;
4385         default:
4386                 return 0;
4387         }
4388 }
4389
4390 static void qeth_determine_capabilities(struct qeth_card *card)
4391 {
4392         int rc;
4393         int length;
4394         char *prcd;
4395         struct ccw_device *ddev;
4396         int ddev_offline = 0;
4397
4398         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4399         ddev = CARD_DDEV(card);
4400         if (!ddev->online) {
4401                 ddev_offline = 1;
4402                 rc = ccw_device_set_online(ddev);
4403                 if (rc) {
4404                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4405                         goto out;
4406                 }
4407         }
4408
4409         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4410         if (rc) {
4411                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4412                         dev_name(&card->gdev->dev), rc);
4413                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4414                 goto out_offline;
4415         }
4416         qeth_configure_unitaddr(card, prcd);
4417         qeth_configure_blkt_default(card, prcd);
4418         kfree(prcd);
4419
4420         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4421         if (rc)
4422                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4423
4424         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4425         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4426         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4427         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4428         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4429             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4430             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4431                 dev_info(&card->gdev->dev,
4432                         "Completion Queueing supported\n");
4433         } else {
4434                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4435         }
4436
4437
4438 out_offline:
4439         if (ddev_offline == 1)
4440                 ccw_device_set_offline(ddev);
4441 out:
4442         return;
4443 }
4444
4445 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4446         struct qdio_buffer **in_sbal_ptrs,
4447         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4448         int i;
4449
4450         if (card->options.cq == QETH_CQ_ENABLED) {
4451                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4452                              (card->qdio.no_in_queues - 1);
4453                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4454                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4455                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4456                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4457                 }
4458
4459                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4460         }
4461 }
4462
4463 static int qeth_qdio_establish(struct qeth_card *card)
4464 {
4465         struct qdio_initialize init_data;
4466         char *qib_param_field;
4467         struct qdio_buffer **in_sbal_ptrs;
4468         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4469         struct qdio_buffer **out_sbal_ptrs;
4470         int i, j, k;
4471         int rc = 0;
4472
4473         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4474
4475         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4476                               GFP_KERNEL);
4477         if (!qib_param_field) {
4478                 rc =  -ENOMEM;
4479                 goto out_free_nothing;
4480         }
4481
4482         qeth_create_qib_param_field(card, qib_param_field);
4483         qeth_create_qib_param_field_blkt(card, qib_param_field);
4484
4485         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4486                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4487                                GFP_KERNEL);
4488         if (!in_sbal_ptrs) {
4489                 rc = -ENOMEM;
4490                 goto out_free_qib_param;
4491         }
4492         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4493                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4494                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4495         }
4496
4497         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4498                                    GFP_KERNEL);
4499         if (!queue_start_poll) {
4500                 rc = -ENOMEM;
4501                 goto out_free_in_sbals;
4502         }
4503         for (i = 0; i < card->qdio.no_in_queues; ++i)
4504                 queue_start_poll[i] = card->discipline.start_poll;
4505
4506         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4507
4508         out_sbal_ptrs =
4509                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4510                         sizeof(void *), GFP_KERNEL);
4511         if (!out_sbal_ptrs) {
4512                 rc = -ENOMEM;
4513                 goto out_free_queue_start_poll;
4514         }
4515         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4516                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4517                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4518                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4519                 }
4520
4521         memset(&init_data, 0, sizeof(struct qdio_initialize));
4522         init_data.cdev                   = CARD_DDEV(card);
4523         init_data.q_format               = qeth_get_qdio_q_format(card);
4524         init_data.qib_param_field_format = 0;
4525         init_data.qib_param_field        = qib_param_field;
4526         init_data.no_input_qs            = card->qdio.no_in_queues;
4527         init_data.no_output_qs           = card->qdio.no_out_queues;
4528         init_data.input_handler          = card->discipline.input_handler;
4529         init_data.output_handler         = card->discipline.output_handler;
4530         init_data.queue_start_poll       = queue_start_poll;
4531         init_data.int_parm               = (unsigned long) card;
4532         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4533         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4534         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4535         init_data.scan_threshold =
4536                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4537
4538         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4539                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4540                 rc = qdio_allocate(&init_data);
4541                 if (rc) {
4542                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4543                         goto out;
4544                 }
4545                 rc = qdio_establish(&init_data);
4546                 if (rc) {
4547                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4548                         qdio_free(CARD_DDEV(card));
4549                 }
4550         }
4551
4552         switch (card->options.cq) {
4553         case QETH_CQ_ENABLED:
4554                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4555                 break;
4556         case QETH_CQ_DISABLED:
4557                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4558                 break;
4559         default:
4560                 break;
4561         }
4562 out:
4563         kfree(out_sbal_ptrs);
4564 out_free_queue_start_poll:
4565         kfree(queue_start_poll);
4566 out_free_in_sbals:
4567         kfree(in_sbal_ptrs);
4568 out_free_qib_param:
4569         kfree(qib_param_field);
4570 out_free_nothing:
4571         return rc;
4572 }
4573
4574 static void qeth_core_free_card(struct qeth_card *card)
4575 {
4576
4577         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4578         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4579         qeth_clean_channel(&card->read);
4580         qeth_clean_channel(&card->write);
4581         if (card->dev)
4582                 free_netdev(card->dev);
4583         kfree(card->ip_tbd_list);
4584         qeth_free_qdio_buffers(card);
4585         unregister_service_level(&card->qeth_service_level);
4586         kfree(card);
4587 }
4588
4589 static struct ccw_device_id qeth_ids[] = {
4590         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4591                                         .driver_info = QETH_CARD_TYPE_OSD},
4592         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4593                                         .driver_info = QETH_CARD_TYPE_IQD},
4594         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4595                                         .driver_info = QETH_CARD_TYPE_OSN},
4596         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4597                                         .driver_info = QETH_CARD_TYPE_OSM},
4598         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4599                                         .driver_info = QETH_CARD_TYPE_OSX},
4600         {},
4601 };
4602 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4603
4604 static struct ccw_driver qeth_ccw_driver = {
4605         .driver = {
4606                 .owner = THIS_MODULE,
4607                 .name = "qeth",
4608         },
4609         .ids = qeth_ids,
4610         .probe = ccwgroup_probe_ccwdev,
4611         .remove = ccwgroup_remove_ccwdev,
4612 };
4613
4614 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4615                                 unsigned long driver_id)
4616 {
4617         return ccwgroup_create_from_string(root_dev, driver_id,
4618                                            &qeth_ccw_driver, 3, buf);
4619 }
4620
4621 int qeth_core_hardsetup_card(struct qeth_card *card)
4622 {
4623         int retries = 0;
4624         int rc;
4625
4626         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4627         atomic_set(&card->force_alloc_skb, 0);
4628         qeth_get_channel_path_desc(card);
4629 retry:
4630         if (retries)
4631                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4632                         dev_name(&card->gdev->dev));
4633         ccw_device_set_offline(CARD_DDEV(card));
4634         ccw_device_set_offline(CARD_WDEV(card));
4635         ccw_device_set_offline(CARD_RDEV(card));
4636         rc = ccw_device_set_online(CARD_RDEV(card));
4637         if (rc)
4638                 goto retriable;
4639         rc = ccw_device_set_online(CARD_WDEV(card));
4640         if (rc)
4641                 goto retriable;
4642         rc = ccw_device_set_online(CARD_DDEV(card));
4643         if (rc)
4644                 goto retriable;
4645         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4646 retriable:
4647         if (rc == -ERESTARTSYS) {
4648                 QETH_DBF_TEXT(SETUP, 2, "break1");
4649                 return rc;
4650         } else if (rc) {
4651                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4652                 if (++retries > 3)
4653                         goto out;
4654                 else
4655                         goto retry;
4656         }
4657         qeth_determine_capabilities(card);
4658         qeth_init_tokens(card);
4659         qeth_init_func_level(card);
4660         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4661         if (rc == -ERESTARTSYS) {
4662                 QETH_DBF_TEXT(SETUP, 2, "break2");
4663                 return rc;
4664         } else if (rc) {
4665                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4666                 if (--retries < 0)
4667                         goto out;
4668                 else
4669                         goto retry;
4670         }
4671         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4672         if (rc == -ERESTARTSYS) {
4673                 QETH_DBF_TEXT(SETUP, 2, "break3");
4674                 return rc;
4675         } else if (rc) {
4676                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4677                 if (--retries < 0)
4678                         goto out;
4679                 else
4680                         goto retry;
4681         }
4682         card->read_or_write_problem = 0;
4683         rc = qeth_mpc_initialize(card);
4684         if (rc) {
4685                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4686                 goto out;
4687         }
4688
4689         card->options.ipa4.supported_funcs = 0;
4690         card->options.adp.supported_funcs = 0;
4691         card->info.diagass_support = 0;
4692         qeth_query_ipassists(card, QETH_PROT_IPV4);
4693         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4694                 qeth_query_setadapterparms(card);
4695         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4696                 qeth_query_setdiagass(card);
4697         return 0;
4698 out:
4699         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4700                 "an error on the device\n");
4701         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4702                 dev_name(&card->gdev->dev), rc);
4703         return rc;
4704 }
4705 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4706
4707 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4708                 struct qdio_buffer_element *element,
4709                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4710 {
4711         struct page *page = virt_to_page(element->addr);
4712         if (*pskb == NULL) {
4713                 if (qethbuffer->rx_skb) {
4714                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4715                         *pskb = qethbuffer->rx_skb;
4716                         qethbuffer->rx_skb = NULL;
4717                 } else {
4718                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4719                         if (!(*pskb))
4720                                 return -ENOMEM;
4721                 }
4722
4723                 skb_reserve(*pskb, ETH_HLEN);
4724                 if (data_len <= QETH_RX_PULL_LEN) {
4725                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4726                                 data_len);
4727                 } else {
4728                         get_page(page);
4729                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4730                                element->addr + offset, QETH_RX_PULL_LEN);
4731                         skb_fill_page_desc(*pskb, *pfrag, page,
4732                                 offset + QETH_RX_PULL_LEN,
4733                                 data_len - QETH_RX_PULL_LEN);
4734                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4735                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4736                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4737                         (*pfrag)++;
4738                 }
4739         } else {
4740                 get_page(page);
4741                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4742                 (*pskb)->data_len += data_len;
4743                 (*pskb)->len      += data_len;
4744                 (*pskb)->truesize += data_len;
4745                 (*pfrag)++;
4746         }
4747
4748
4749         return 0;
4750 }
4751
4752 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4753                 struct qeth_qdio_buffer *qethbuffer,
4754                 struct qdio_buffer_element **__element, int *__offset,
4755                 struct qeth_hdr **hdr)
4756 {
4757         struct qdio_buffer_element *element = *__element;
4758         struct qdio_buffer *buffer = qethbuffer->buffer;
4759         int offset = *__offset;
4760         struct sk_buff *skb = NULL;
4761         int skb_len = 0;
4762         void *data_ptr;
4763         int data_len;
4764         int headroom = 0;
4765         int use_rx_sg = 0;
4766         int frag = 0;
4767
4768         /* qeth_hdr must not cross element boundaries */
4769         if (element->length < offset + sizeof(struct qeth_hdr)) {
4770                 if (qeth_is_last_sbale(element))
4771                         return NULL;
4772                 element++;
4773                 offset = 0;
4774                 if (element->length < sizeof(struct qeth_hdr))
4775                         return NULL;
4776         }
4777         *hdr = element->addr + offset;
4778
4779         offset += sizeof(struct qeth_hdr);
4780         switch ((*hdr)->hdr.l2.id) {
4781         case QETH_HEADER_TYPE_LAYER2:
4782                 skb_len = (*hdr)->hdr.l2.pkt_length;
4783                 break;
4784         case QETH_HEADER_TYPE_LAYER3:
4785                 skb_len = (*hdr)->hdr.l3.length;
4786                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4787                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4788                         headroom = TR_HLEN;
4789                 else
4790                         headroom = ETH_HLEN;
4791                 break;
4792         case QETH_HEADER_TYPE_OSN:
4793                 skb_len = (*hdr)->hdr.osn.pdu_length;
4794                 headroom = sizeof(struct qeth_hdr);
4795                 break;
4796         default:
4797                 break;
4798         }
4799
4800         if (!skb_len)
4801                 return NULL;
4802
4803         if (((skb_len >= card->options.rx_sg_cb) &&
4804              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4805              (!atomic_read(&card->force_alloc_skb))) ||
4806             (card->options.cq == QETH_CQ_ENABLED)) {
4807                 use_rx_sg = 1;
4808         } else {
4809                 skb = dev_alloc_skb(skb_len + headroom);
4810                 if (!skb)
4811                         goto no_mem;
4812                 if (headroom)
4813                         skb_reserve(skb, headroom);
4814         }
4815
4816         data_ptr = element->addr + offset;
4817         while (skb_len) {
4818                 data_len = min(skb_len, (int)(element->length - offset));
4819                 if (data_len) {
4820                         if (use_rx_sg) {
4821                                 if (qeth_create_skb_frag(qethbuffer, element,
4822                                     &skb, offset, &frag, data_len))
4823                                         goto no_mem;
4824                         } else {
4825                                 memcpy(skb_put(skb, data_len), data_ptr,
4826                                         data_len);
4827                         }
4828                 }
4829                 skb_len -= data_len;
4830                 if (skb_len) {
4831                         if (qeth_is_last_sbale(element)) {
4832                                 QETH_CARD_TEXT(card, 4, "unexeob");
4833                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4834                                 dev_kfree_skb_any(skb);
4835                                 card->stats.rx_errors++;
4836                                 return NULL;
4837                         }
4838                         element++;
4839                         offset = 0;
4840                         data_ptr = element->addr;
4841                 } else {
4842                         offset += data_len;
4843                 }
4844         }
4845         *__element = element;
4846         *__offset = offset;
4847         if (use_rx_sg && card->options.performance_stats) {
4848                 card->perf_stats.sg_skbs_rx++;
4849                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4850         }
4851         return skb;
4852 no_mem:
4853         if (net_ratelimit()) {
4854                 QETH_CARD_TEXT(card, 2, "noskbmem");
4855         }
4856         card->stats.rx_dropped++;
4857         return NULL;
4858 }
4859 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4860
4861 static void qeth_unregister_dbf_views(void)
4862 {
4863         int x;
4864         for (x = 0; x < QETH_DBF_INFOS; x++) {
4865                 debug_unregister(qeth_dbf[x].id);
4866                 qeth_dbf[x].id = NULL;
4867         }
4868 }
4869
4870 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4871 {
4872         char dbf_txt_buf[32];
4873         va_list args;
4874
4875         if (level > id->level)
4876                 return;
4877         va_start(args, fmt);
4878         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4879         va_end(args);
4880         debug_text_event(id, level, dbf_txt_buf);
4881 }
4882 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4883
4884 static int qeth_register_dbf_views(void)
4885 {
4886         int ret;
4887         int x;
4888
4889         for (x = 0; x < QETH_DBF_INFOS; x++) {
4890                 /* register the areas */
4891                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4892                                                 qeth_dbf[x].pages,
4893                                                 qeth_dbf[x].areas,
4894                                                 qeth_dbf[x].len);
4895                 if (qeth_dbf[x].id == NULL) {
4896                         qeth_unregister_dbf_views();
4897                         return -ENOMEM;
4898                 }
4899
4900                 /* register a view */
4901                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4902                 if (ret) {
4903                         qeth_unregister_dbf_views();
4904                         return ret;
4905                 }
4906
4907                 /* set a passing level */
4908                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4909         }
4910
4911         return 0;
4912 }
4913
4914 int qeth_core_load_discipline(struct qeth_card *card,
4915                 enum qeth_discipline_id discipline)
4916 {
4917         int rc = 0;
4918         switch (discipline) {
4919         case QETH_DISCIPLINE_LAYER3:
4920                 card->discipline.ccwgdriver = try_then_request_module(
4921                         symbol_get(qeth_l3_ccwgroup_driver),
4922                         "qeth_l3");
4923                 break;
4924         case QETH_DISCIPLINE_LAYER2:
4925                 card->discipline.ccwgdriver = try_then_request_module(
4926                         symbol_get(qeth_l2_ccwgroup_driver),
4927                         "qeth_l2");
4928                 break;
4929         }
4930         if (!card->discipline.ccwgdriver) {
4931                 dev_err(&card->gdev->dev, "There is no kernel module to "
4932                         "support discipline %d\n", discipline);
4933                 rc = -EINVAL;
4934         }
4935         return rc;
4936 }
4937
4938 void qeth_core_free_discipline(struct qeth_card *card)
4939 {
4940         if (card->options.layer2)
4941                 symbol_put(qeth_l2_ccwgroup_driver);
4942         else
4943                 symbol_put(qeth_l3_ccwgroup_driver);
4944         card->discipline.ccwgdriver = NULL;
4945 }
4946
4947 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4948 {
4949         struct qeth_card *card;
4950         struct device *dev;
4951         int rc;
4952         unsigned long flags;
4953         char dbf_name[20];
4954
4955         QETH_DBF_TEXT(SETUP, 2, "probedev");
4956
4957         dev = &gdev->dev;
4958         if (!get_device(dev))
4959                 return -ENODEV;
4960
4961         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4962
4963         card = qeth_alloc_card();
4964         if (!card) {
4965                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4966                 rc = -ENOMEM;
4967                 goto err_dev;
4968         }
4969
4970         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4971                 dev_name(&gdev->dev));
4972         card->debug = debug_register(dbf_name, 2, 1, 8);
4973         if (!card->debug) {
4974                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4975                 rc = -ENOMEM;
4976                 goto err_card;
4977         }
4978         debug_register_view(card->debug, &debug_hex_ascii_view);
4979
4980         card->read.ccwdev  = gdev->cdev[0];
4981         card->write.ccwdev = gdev->cdev[1];
4982         card->data.ccwdev  = gdev->cdev[2];
4983         dev_set_drvdata(&gdev->dev, card);
4984         card->gdev = gdev;
4985         gdev->cdev[0]->handler = qeth_irq;
4986         gdev->cdev[1]->handler = qeth_irq;
4987         gdev->cdev[2]->handler = qeth_irq;
4988
4989         rc = qeth_determine_card_type(card);
4990         if (rc) {
4991                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4992                 goto err_dbf;
4993         }
4994         rc = qeth_setup_card(card);
4995         if (rc) {
4996                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4997                 goto err_dbf;
4998         }
4999
5000         if (card->info.type == QETH_CARD_TYPE_OSN)
5001                 rc = qeth_core_create_osn_attributes(dev);
5002         else
5003                 rc = qeth_core_create_device_attributes(dev);
5004         if (rc)
5005                 goto err_dbf;
5006         switch (card->info.type) {
5007         case QETH_CARD_TYPE_OSN:
5008         case QETH_CARD_TYPE_OSM:
5009                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5010                 if (rc)
5011                         goto err_attr;
5012                 rc = card->discipline.ccwgdriver->probe(card->gdev);
5013                 if (rc)
5014                         goto err_disc;
5015         case QETH_CARD_TYPE_OSD:
5016         case QETH_CARD_TYPE_OSX:
5017         default:
5018                 break;
5019         }
5020
5021         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5022         list_add_tail(&card->list, &qeth_core_card_list.list);
5023         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5024
5025         qeth_determine_capabilities(card);
5026         return 0;
5027
5028 err_disc:
5029         qeth_core_free_discipline(card);
5030 err_attr:
5031         if (card->info.type == QETH_CARD_TYPE_OSN)
5032                 qeth_core_remove_osn_attributes(dev);
5033         else
5034                 qeth_core_remove_device_attributes(dev);
5035 err_dbf:
5036         debug_unregister(card->debug);
5037 err_card:
5038         qeth_core_free_card(card);
5039 err_dev:
5040         put_device(dev);
5041         return rc;
5042 }
5043
5044 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5045 {
5046         unsigned long flags;
5047         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5048
5049         QETH_DBF_TEXT(SETUP, 2, "removedv");
5050
5051         if (card->info.type == QETH_CARD_TYPE_OSN) {
5052                 qeth_core_remove_osn_attributes(&gdev->dev);
5053         } else {
5054                 qeth_core_remove_device_attributes(&gdev->dev);
5055         }
5056
5057         if (card->discipline.ccwgdriver) {
5058                 card->discipline.ccwgdriver->remove(gdev);
5059                 qeth_core_free_discipline(card);
5060         }
5061
5062         debug_unregister(card->debug);
5063         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5064         list_del(&card->list);
5065         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5066         qeth_core_free_card(card);
5067         dev_set_drvdata(&gdev->dev, NULL);
5068         put_device(&gdev->dev);
5069         return;
5070 }
5071
5072 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5073 {
5074         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5075         int rc = 0;
5076         int def_discipline;
5077
5078         if (!card->discipline.ccwgdriver) {
5079                 if (card->info.type == QETH_CARD_TYPE_IQD)
5080                         def_discipline = QETH_DISCIPLINE_LAYER3;
5081                 else
5082                         def_discipline = QETH_DISCIPLINE_LAYER2;
5083                 rc = qeth_core_load_discipline(card, def_discipline);
5084                 if (rc)
5085                         goto err;
5086                 rc = card->discipline.ccwgdriver->probe(card->gdev);
5087                 if (rc)
5088                         goto err;
5089         }
5090         rc = card->discipline.ccwgdriver->set_online(gdev);
5091 err:
5092         return rc;
5093 }
5094
5095 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5096 {
5097         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5098         return card->discipline.ccwgdriver->set_offline(gdev);
5099 }
5100
5101 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5102 {
5103         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5104         if (card->discipline.ccwgdriver &&
5105             card->discipline.ccwgdriver->shutdown)
5106                 card->discipline.ccwgdriver->shutdown(gdev);
5107 }
5108
5109 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5110 {
5111         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5112         if (card->discipline.ccwgdriver &&
5113             card->discipline.ccwgdriver->prepare)
5114                 return card->discipline.ccwgdriver->prepare(gdev);
5115         return 0;
5116 }
5117
5118 static void qeth_core_complete(struct ccwgroup_device *gdev)
5119 {
5120         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5121         if (card->discipline.ccwgdriver &&
5122             card->discipline.ccwgdriver->complete)
5123                 card->discipline.ccwgdriver->complete(gdev);
5124 }
5125
5126 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5127 {
5128         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5129         if (card->discipline.ccwgdriver &&
5130             card->discipline.ccwgdriver->freeze)
5131                 return card->discipline.ccwgdriver->freeze(gdev);
5132         return 0;
5133 }
5134
5135 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5136 {
5137         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5138         if (card->discipline.ccwgdriver &&
5139             card->discipline.ccwgdriver->thaw)
5140                 return card->discipline.ccwgdriver->thaw(gdev);
5141         return 0;
5142 }
5143
5144 static int qeth_core_restore(struct ccwgroup_device *gdev)
5145 {
5146         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5147         if (card->discipline.ccwgdriver &&
5148             card->discipline.ccwgdriver->restore)
5149                 return card->discipline.ccwgdriver->restore(gdev);
5150         return 0;
5151 }
5152
5153 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5154         .driver = {
5155                 .owner = THIS_MODULE,
5156                 .name = "qeth",
5157         },
5158         .driver_id = 0xD8C5E3C8,
5159         .probe = qeth_core_probe_device,
5160         .remove = qeth_core_remove_device,
5161         .set_online = qeth_core_set_online,
5162         .set_offline = qeth_core_set_offline,
5163         .shutdown = qeth_core_shutdown,
5164         .prepare = qeth_core_prepare,
5165         .complete = qeth_core_complete,
5166         .freeze = qeth_core_freeze,
5167         .thaw = qeth_core_thaw,
5168         .restore = qeth_core_restore,
5169 };
5170
5171 static ssize_t
5172 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
5173                            size_t count)
5174 {
5175         int err;
5176         err = qeth_core_driver_group(buf, qeth_core_root_dev,
5177                                         qeth_core_ccwgroup_driver.driver_id);
5178         if (err)
5179                 return err;
5180         else
5181                 return count;
5182 }
5183
5184 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5185
5186 static struct {
5187         const char str[ETH_GSTRING_LEN];
5188 } qeth_ethtool_stats_keys[] = {
5189 /*  0 */{"rx skbs"},
5190         {"rx buffers"},
5191         {"tx skbs"},
5192         {"tx buffers"},
5193         {"tx skbs no packing"},
5194         {"tx buffers no packing"},
5195         {"tx skbs packing"},
5196         {"tx buffers packing"},
5197         {"tx sg skbs"},
5198         {"tx sg frags"},
5199 /* 10 */{"rx sg skbs"},
5200         {"rx sg frags"},
5201         {"rx sg page allocs"},
5202         {"tx large kbytes"},
5203         {"tx large count"},
5204         {"tx pk state ch n->p"},
5205         {"tx pk state ch p->n"},
5206         {"tx pk watermark low"},
5207         {"tx pk watermark high"},
5208         {"queue 0 buffer usage"},
5209 /* 20 */{"queue 1 buffer usage"},
5210         {"queue 2 buffer usage"},
5211         {"queue 3 buffer usage"},
5212         {"rx poll time"},
5213         {"rx poll count"},
5214         {"rx do_QDIO time"},
5215         {"rx do_QDIO count"},
5216         {"tx handler time"},
5217         {"tx handler count"},
5218         {"tx time"},
5219 /* 30 */{"tx count"},
5220         {"tx do_QDIO time"},
5221         {"tx do_QDIO count"},
5222         {"tx csum"},
5223         {"tx lin"},
5224         {"cq handler count"},
5225         {"cq handler time"}
5226 };
5227
5228 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5229 {
5230         switch (stringset) {
5231         case ETH_SS_STATS:
5232                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5233         default:
5234                 return -EINVAL;
5235         }
5236 }
5237 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5238
5239 void qeth_core_get_ethtool_stats(struct net_device *dev,
5240                 struct ethtool_stats *stats, u64 *data)
5241 {
5242         struct qeth_card *card = dev->ml_priv;
5243         data[0] = card->stats.rx_packets -
5244                                 card->perf_stats.initial_rx_packets;
5245         data[1] = card->perf_stats.bufs_rec;
5246         data[2] = card->stats.tx_packets -
5247                                 card->perf_stats.initial_tx_packets;
5248         data[3] = card->perf_stats.bufs_sent;
5249         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5250                         - card->perf_stats.skbs_sent_pack;
5251         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5252         data[6] = card->perf_stats.skbs_sent_pack;
5253         data[7] = card->perf_stats.bufs_sent_pack;
5254         data[8] = card->perf_stats.sg_skbs_sent;
5255         data[9] = card->perf_stats.sg_frags_sent;
5256         data[10] = card->perf_stats.sg_skbs_rx;
5257         data[11] = card->perf_stats.sg_frags_rx;
5258         data[12] = card->perf_stats.sg_alloc_page_rx;
5259         data[13] = (card->perf_stats.large_send_bytes >> 10);
5260         data[14] = card->perf_stats.large_send_cnt;
5261         data[15] = card->perf_stats.sc_dp_p;
5262         data[16] = card->perf_stats.sc_p_dp;
5263         data[17] = QETH_LOW_WATERMARK_PACK;
5264         data[18] = QETH_HIGH_WATERMARK_PACK;
5265         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5266         data[20] = (card->qdio.no_out_queues > 1) ?
5267                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5268         data[21] = (card->qdio.no_out_queues > 2) ?
5269                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5270         data[22] = (card->qdio.no_out_queues > 3) ?
5271                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5272         data[23] = card->perf_stats.inbound_time;
5273         data[24] = card->perf_stats.inbound_cnt;
5274         data[25] = card->perf_stats.inbound_do_qdio_time;
5275         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5276         data[27] = card->perf_stats.outbound_handler_time;
5277         data[28] = card->perf_stats.outbound_handler_cnt;
5278         data[29] = card->perf_stats.outbound_time;
5279         data[30] = card->perf_stats.outbound_cnt;
5280         data[31] = card->perf_stats.outbound_do_qdio_time;
5281         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5282         data[33] = card->perf_stats.tx_csum;
5283         data[34] = card->perf_stats.tx_lin;
5284         data[35] = card->perf_stats.cq_cnt;
5285         data[36] = card->perf_stats.cq_time;
5286 }
5287 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5288
5289 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5290 {
5291         switch (stringset) {
5292         case ETH_SS_STATS:
5293                 memcpy(data, &qeth_ethtool_stats_keys,
5294                         sizeof(qeth_ethtool_stats_keys));
5295                 break;
5296         default:
5297                 WARN_ON(1);
5298                 break;
5299         }
5300 }
5301 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5302
5303 void qeth_core_get_drvinfo(struct net_device *dev,
5304                 struct ethtool_drvinfo *info)
5305 {
5306         struct qeth_card *card = dev->ml_priv;
5307         if (card->options.layer2)
5308                 strcpy(info->driver, "qeth_l2");
5309         else
5310                 strcpy(info->driver, "qeth_l3");
5311
5312         strcpy(info->version, "1.0");
5313         strcpy(info->fw_version, card->info.mcl_level);
5314         sprintf(info->bus_info, "%s/%s/%s",
5315                         CARD_RDEV_ID(card),
5316                         CARD_WDEV_ID(card),
5317                         CARD_DDEV_ID(card));
5318 }
5319 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5320
5321 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5322                                         struct ethtool_cmd *ecmd)
5323 {
5324         struct qeth_card *card = netdev->ml_priv;
5325         enum qeth_link_types link_type;
5326
5327         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5328                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5329         else
5330                 link_type = card->info.link_type;
5331
5332         ecmd->transceiver = XCVR_INTERNAL;
5333         ecmd->supported = SUPPORTED_Autoneg;
5334         ecmd->advertising = ADVERTISED_Autoneg;
5335         ecmd->duplex = DUPLEX_FULL;
5336         ecmd->autoneg = AUTONEG_ENABLE;
5337
5338         switch (link_type) {
5339         case QETH_LINK_TYPE_FAST_ETH:
5340         case QETH_LINK_TYPE_LANE_ETH100:
5341                 ecmd->supported |= SUPPORTED_10baseT_Half |
5342                                         SUPPORTED_10baseT_Full |
5343                                         SUPPORTED_100baseT_Half |
5344                                         SUPPORTED_100baseT_Full |
5345                                         SUPPORTED_TP;
5346                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5347                                         ADVERTISED_10baseT_Full |
5348                                         ADVERTISED_100baseT_Half |
5349                                         ADVERTISED_100baseT_Full |
5350                                         ADVERTISED_TP;
5351                 ecmd->speed = SPEED_100;
5352                 ecmd->port = PORT_TP;
5353                 break;
5354
5355         case QETH_LINK_TYPE_GBIT_ETH:
5356         case QETH_LINK_TYPE_LANE_ETH1000:
5357                 ecmd->supported |= SUPPORTED_10baseT_Half |
5358                                         SUPPORTED_10baseT_Full |
5359                                         SUPPORTED_100baseT_Half |
5360                                         SUPPORTED_100baseT_Full |
5361                                         SUPPORTED_1000baseT_Half |
5362                                         SUPPORTED_1000baseT_Full |
5363                                         SUPPORTED_FIBRE;
5364                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5365                                         ADVERTISED_10baseT_Full |
5366                                         ADVERTISED_100baseT_Half |
5367                                         ADVERTISED_100baseT_Full |
5368                                         ADVERTISED_1000baseT_Half |
5369                                         ADVERTISED_1000baseT_Full |
5370                                         ADVERTISED_FIBRE;
5371                 ecmd->speed = SPEED_1000;
5372                 ecmd->port = PORT_FIBRE;
5373                 break;
5374
5375         case QETH_LINK_TYPE_10GBIT_ETH:
5376                 ecmd->supported |= SUPPORTED_10baseT_Half |
5377                                         SUPPORTED_10baseT_Full |
5378                                         SUPPORTED_100baseT_Half |
5379                                         SUPPORTED_100baseT_Full |
5380                                         SUPPORTED_1000baseT_Half |
5381                                         SUPPORTED_1000baseT_Full |
5382                                         SUPPORTED_10000baseT_Full |
5383                                         SUPPORTED_FIBRE;
5384                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5385                                         ADVERTISED_10baseT_Full |
5386                                         ADVERTISED_100baseT_Half |
5387                                         ADVERTISED_100baseT_Full |
5388                                         ADVERTISED_1000baseT_Half |
5389                                         ADVERTISED_1000baseT_Full |
5390                                         ADVERTISED_10000baseT_Full |
5391                                         ADVERTISED_FIBRE;
5392                 ecmd->speed = SPEED_10000;
5393                 ecmd->port = PORT_FIBRE;
5394                 break;
5395
5396         default:
5397                 ecmd->supported |= SUPPORTED_10baseT_Half |
5398                                         SUPPORTED_10baseT_Full |
5399                                         SUPPORTED_TP;
5400                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5401                                         ADVERTISED_10baseT_Full |
5402                                         ADVERTISED_TP;
5403                 ecmd->speed = SPEED_10;
5404                 ecmd->port = PORT_TP;
5405         }
5406
5407         return 0;
5408 }
5409 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5410
5411 static int __init qeth_core_init(void)
5412 {
5413         int rc;
5414
5415         pr_info("loading core functions\n");
5416         INIT_LIST_HEAD(&qeth_core_card_list.list);
5417         rwlock_init(&qeth_core_card_list.rwlock);
5418
5419         rc = qeth_register_dbf_views();
5420         if (rc)
5421                 goto out_err;
5422         rc = ccw_driver_register(&qeth_ccw_driver);
5423         if (rc)
5424                 goto ccw_err;
5425         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5426         if (rc)
5427                 goto ccwgroup_err;
5428         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
5429                                 &driver_attr_group);
5430         if (rc)
5431                 goto driver_err;
5432         qeth_core_root_dev = root_device_register("qeth");
5433         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5434         if (rc)
5435                 goto register_err;
5436
5437         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5438                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5439         if (!qeth_core_header_cache) {
5440                 rc = -ENOMEM;
5441                 goto slab_err;
5442         }
5443
5444         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5445                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5446         if (!qeth_qdio_outbuf_cache) {
5447                 rc = -ENOMEM;
5448                 goto cqslab_err;
5449         }
5450
5451         return 0;
5452 cqslab_err:
5453         kmem_cache_destroy(qeth_core_header_cache);
5454 slab_err:
5455         root_device_unregister(qeth_core_root_dev);
5456 register_err:
5457         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
5458                            &driver_attr_group);
5459 driver_err:
5460         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5461 ccwgroup_err:
5462         ccw_driver_unregister(&qeth_ccw_driver);
5463 ccw_err:
5464         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
5465         qeth_unregister_dbf_views();
5466 out_err:
5467         pr_err("Initializing the qeth device driver failed\n");
5468         return rc;
5469 }
5470
5471 static void __exit qeth_core_exit(void)
5472 {
5473         root_device_unregister(qeth_core_root_dev);
5474         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
5475                            &driver_attr_group);
5476         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5477         ccw_driver_unregister(&qeth_ccw_driver);
5478         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5479         kmem_cache_destroy(qeth_core_header_cache);
5480         qeth_unregister_dbf_views();
5481         pr_info("core functions removed\n");
5482 }
5483
5484 module_init(qeth_core_init);
5485 module_exit(qeth_core_exit);
5486 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5487 MODULE_DESCRIPTION("qeth core functions");
5488 MODULE_LICENSE("GPL");