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
  25 #include <asm/ebcdic.h>
  26 #include <asm/io.h>
  27 #include <asm/sysinfo.h>
  28
  29 #include "qeth_core.h"
  30
  31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  33         /*                   N  P  A    M  L  V                      H  */
  34         [QETH_DBF_SETUP] = {"qeth_setup",
  35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_MSG]   = {"qeth_msg",
  37                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  38         [QETH_DBF_CTRL]  = {"qeth_control",
  39                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  40 };
  41 EXPORT_SYMBOL_GPL(qeth_dbf);
  42
  43 struct qeth_card_list_struct qeth_core_card_list;
  44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  45 struct kmem_cache *qeth_core_header_cache;
  46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  47
  48 static struct device *qeth_core_root_dev;
  49 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  50 static struct lock_class_key qdio_out_skb_queue_key;
  51
  52 static void qeth_send_control_data_cb(struct qeth_channel *,
  53                         struct qeth_cmd_buffer *);
  54 static int qeth_issue_next_read(struct qeth_card *);
  55 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  56 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  57 static void qeth_free_buffer_pool(struct qeth_card *);
  58 static int qeth_qdio_establish(struct qeth_card *);
  59
  60
  61 static inline const char *qeth_get_cardname(struct qeth_card *card)
  62 {
  63         if (card->info.guestlan) {
  64                 switch (card->info.type) {
  65                 case QETH_CARD_TYPE_OSD:
  66                         return " Guest LAN QDIO";
  67                 case QETH_CARD_TYPE_IQD:
  68                         return " Guest LAN Hiper";
  69                 case QETH_CARD_TYPE_OSM:
  70                         return " Guest LAN QDIO - OSM";
  71                 case QETH_CARD_TYPE_OSX:
  72                         return " Guest LAN QDIO - OSX";
  73                 default:
  74                         return " unknown";
  75                 }
  76         } else {
  77                 switch (card->info.type) {
  78                 case QETH_CARD_TYPE_OSD:
  79                         return " OSD Express";
  80                 case QETH_CARD_TYPE_IQD:
  81                         return " HiperSockets";
  82                 case QETH_CARD_TYPE_OSN:
  83                         return " OSN QDIO";
  84                 case QETH_CARD_TYPE_OSM:
  85                         return " OSM QDIO";
  86                 case QETH_CARD_TYPE_OSX:
  87                         return " OSX QDIO";
  88                 default:
  89                         return " unknown";
  90                 }
  91         }
  92         return " n/a";
  93 }
  94
  95 /* max length to be returned: 14 */
  96 const char *qeth_get_cardname_short(struct qeth_card *card)
  97 {
  98         if (card->info.guestlan) {
  99                 switch (card->info.type) {
 100                 case QETH_CARD_TYPE_OSD:
 101                         return "GuestLAN QDIO";
 102                 case QETH_CARD_TYPE_IQD:
 103                         return "GuestLAN Hiper";
 104                 case QETH_CARD_TYPE_OSM:
 105                         return "GuestLAN OSM";
 106                 case QETH_CARD_TYPE_OSX:
 107                         return "GuestLAN OSX";
 108                 default:
 109                         return "unknown";
 110                 }
 111         } else {
 112                 switch (card->info.type) {
 113                 case QETH_CARD_TYPE_OSD:
 114                         switch (card->info.link_type) {
 115                         case QETH_LINK_TYPE_FAST_ETH:
 116                                 return "OSD_100";
 117                         case QETH_LINK_TYPE_HSTR:
 118                                 return "HSTR";
 119                         case QETH_LINK_TYPE_GBIT_ETH:
 120                                 return "OSD_1000";
 121                         case QETH_LINK_TYPE_10GBIT_ETH:
 122                                 return "OSD_10GIG";
 123                         case QETH_LINK_TYPE_LANE_ETH100:
 124                                 return "OSD_FE_LANE";
 125                         case QETH_LINK_TYPE_LANE_TR:
 126                                 return "OSD_TR_LANE";
 127                         case QETH_LINK_TYPE_LANE_ETH1000:
 128                                 return "OSD_GbE_LANE";
 129                         case QETH_LINK_TYPE_LANE:
 130                                 return "OSD_ATM_LANE";
 131                         default:
 132                                 return "OSD_Express";
 133                         }
 134                 case QETH_CARD_TYPE_IQD:
 135                         return "HiperSockets";
 136                 case QETH_CARD_TYPE_OSN:
 137                         return "OSN";
 138                 case QETH_CARD_TYPE_OSM:
 139                         return "OSM_1000";
 140                 case QETH_CARD_TYPE_OSX:
 141                         return "OSX_10GIG";
 142                 default:
 143                         return "unknown";
 144                 }
 145         }
 146         return "n/a";
 147 }
 148
 149 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 150                          int clear_start_mask)
 151 {
 152         unsigned long flags;
 153
 154         spin_lock_irqsave(&card->thread_mask_lock, flags);
 155         card->thread_allowed_mask = threads;
 156         if (clear_start_mask)
 157                 card->thread_start_mask &= threads;
 158         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 159         wake_up(&card->wait_q);
 160 }
 161 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 162
 163 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 164 {
 165         unsigned long flags;
 166         int rc = 0;
 167
 168         spin_lock_irqsave(&card->thread_mask_lock, flags);
 169         rc = (card->thread_running_mask & threads);
 170         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 171         return rc;
 172 }
 173 EXPORT_SYMBOL_GPL(qeth_threads_running);
 174
 175 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 176 {
 177         return wait_event_interruptible(card->wait_q,
 178                         qeth_threads_running(card, threads) == 0);
 179 }
 180 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 181
 182 void qeth_clear_working_pool_list(struct qeth_card *card)
 183 {
 184         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 185
 186         QETH_CARD_TEXT(card, 5, "clwrklst");
 187         list_for_each_entry_safe(pool_entry, tmp,
 188                             &card->qdio.in_buf_pool.entry_list, list){
 189                         list_del(&pool_entry->list);
 190         }
 191 }
 192 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 193
 194 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 195 {
 196         struct qeth_buffer_pool_entry *pool_entry;
 197         void *ptr;
 198         int i, j;
 199
 200         QETH_CARD_TEXT(card, 5, "alocpool");
 201         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 202                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 203                 if (!pool_entry) {
 204                         qeth_free_buffer_pool(card);
 205                         return -ENOMEM;
 206                 }
 207                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 208                         ptr = (void *) __get_free_page(GFP_KERNEL);
 209                         if (!ptr) {
 210                                 while (j > 0)
 211                                         free_page((unsigned long)
 212                                                   pool_entry->elements[--j]);
 213                                 kfree(pool_entry);
 214                                 qeth_free_buffer_pool(card);
 215                                 return -ENOMEM;
 216                         }
 217                         pool_entry->elements[j] = ptr;
 218                 }
 219                 list_add(&pool_entry->init_list,
 220                          &card->qdio.init_pool.entry_list);
 221         }
 222         return 0;
 223 }
 224
 225 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 226 {
 227         QETH_CARD_TEXT(card, 2, "realcbp");
 228
 229         if ((card->state != CARD_STATE_DOWN) &&
 230             (card->state != CARD_STATE_RECOVER))
 231                 return -EPERM;
 232
 233         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 234         qeth_clear_working_pool_list(card);
 235         qeth_free_buffer_pool(card);
 236         card->qdio.in_buf_pool.buf_count = bufcnt;
 237         card->qdio.init_pool.buf_count = bufcnt;
 238         return qeth_alloc_buffer_pool(card);
 239 }
 240 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 241
 242 static int qeth_issue_next_read(struct qeth_card *card)
 243 {
 244         int rc;
 245         struct qeth_cmd_buffer *iob;
 246
 247         QETH_CARD_TEXT(card, 5, "issnxrd");
 248         if (card->read.state != CH_STATE_UP)
 249                 return -EIO;
 250         iob = qeth_get_buffer(&card->read);
 251         if (!iob) {
 252                 dev_warn(&card->gdev->dev, "The qeth device driver "
 253                         "failed to recover an error on the device\n");
 254                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 255                         "available\n", dev_name(&card->gdev->dev));
 256                 return -ENOMEM;
 257         }
 258         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 259         QETH_CARD_TEXT(card, 6, "noirqpnd");
 260         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 261                               (addr_t) iob, 0, 0);
 262         if (rc) {
 263                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 264                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 265                 atomic_set(&card->read.irq_pending, 0);
 266                 card->read_or_write_problem = 1;
 267                 qeth_schedule_recovery(card);
 268                 wake_up(&card->wait_q);
 269         }
 270         return rc;
 271 }
 272
 273 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 274 {
 275         struct qeth_reply *reply;
 276
 277         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 278         if (reply) {
 279                 atomic_set(&reply->refcnt, 1);
 280                 atomic_set(&reply->received, 0);
 281                 reply->card = card;
 282         };
 283         return reply;
 284 }
 285
 286 static void qeth_get_reply(struct qeth_reply *reply)
 287 {
 288         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 289         atomic_inc(&reply->refcnt);
 290 }
 291
 292 static void qeth_put_reply(struct qeth_reply *reply)
 293 {
 294         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 295         if (atomic_dec_and_test(&reply->refcnt))
 296                 kfree(reply);
 297 }
 298
 299 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 300                 struct qeth_card *card)
 301 {
 302         char *ipa_name;
 303         int com = cmd->hdr.command;
 304         ipa_name = qeth_get_ipa_cmd_name(com);
 305         if (rc)
 306                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 307                                 "x%X \"%s\"\n",
 308                                 ipa_name, com, dev_name(&card->gdev->dev),
 309                                 QETH_CARD_IFNAME(card), rc,
 310                                 qeth_get_ipa_msg(rc));
 311         else
 312                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 313                                 ipa_name, com, dev_name(&card->gdev->dev),
 314                                 QETH_CARD_IFNAME(card));
 315 }
 316
 317 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 318                 struct qeth_cmd_buffer *iob)
 319 {
 320         struct qeth_ipa_cmd *cmd = NULL;
 321
 322         QETH_CARD_TEXT(card, 5, "chkipad");
 323         if (IS_IPA(iob->data)) {
 324                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 325                 if (IS_IPA_REPLY(cmd)) {
 326                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 327                             cmd->hdr.command != IPA_CMD_DELCCID &&
 328                             cmd->hdr.command != IPA_CMD_MODCCID &&
 329                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 330                                 qeth_issue_ipa_msg(cmd,
 331                                                 cmd->hdr.return_code, card);
 332                         return cmd;
 333                 } else {
 334                         switch (cmd->hdr.command) {
 335                         case IPA_CMD_STOPLAN:
 336                                 dev_warn(&card->gdev->dev,
 337                                            "The link for interface %s on CHPID"
 338                                            " 0x%X failed\n",
 339                                            QETH_CARD_IFNAME(card),
 340                                            card->info.chpid);
 341                                 card->lan_online = 0;
 342                                 if (card->dev && netif_carrier_ok(card->dev))
 343                                         netif_carrier_off(card->dev);
 344                                 return NULL;
 345                         case IPA_CMD_STARTLAN:
 346                                 dev_info(&card->gdev->dev,
 347                                            "The link for %s on CHPID 0x%X has"
 348                                            " been restored\n",
 349                                            QETH_CARD_IFNAME(card),
 350                                            card->info.chpid);
 351                                 netif_carrier_on(card->dev);
 352                                 card->lan_online = 1;
 353                                 if (card->info.hwtrap)
 354                                         card->info.hwtrap = 2;
 355                                 qeth_schedule_recovery(card);
 356                                 return NULL;
 357                         case IPA_CMD_MODCCID:
 358                                 return cmd;
 359                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 360                                 QETH_CARD_TEXT(card, 3, "irla");
 361                                 break;
 362                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 363                                 QETH_CARD_TEXT(card, 3, "urla");
 364                                 break;
 365                         default:
 366                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 367                                            "but not a reply!\n");
 368                                 break;
 369                         }
 370                 }
 371         }
 372         return cmd;
 373 }
 374
 375 void qeth_clear_ipacmd_list(struct qeth_card *card)
 376 {
 377         struct qeth_reply *reply, *r;
 378         unsigned long flags;
 379
 380         QETH_CARD_TEXT(card, 4, "clipalst");
 381
 382         spin_lock_irqsave(&card->lock, flags);
 383         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 384                 qeth_get_reply(reply);
 385                 reply->rc = -EIO;
 386                 atomic_inc(&reply->received);
 387                 list_del_init(&reply->list);
 388                 wake_up(&reply->wait_q);
 389                 qeth_put_reply(reply);
 390         }
 391         spin_unlock_irqrestore(&card->lock, flags);
 392         atomic_set(&card->write.irq_pending, 0);
 393 }
 394 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 395
 396 static int qeth_check_idx_response(struct qeth_card *card,
 397         unsigned char *buffer)
 398 {
 399         if (!buffer)
 400                 return 0;
 401
 402         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 403         if ((buffer[2] & 0xc0) == 0xc0) {
 404                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 405                            "with cause code 0x%02x%s\n",
 406                            buffer[4],
 407                            ((buffer[4] == 0x22) ?
 408                             " -- try another portname" : ""));
 409                 QETH_CARD_TEXT(card, 2, "ckidxres");
 410                 QETH_CARD_TEXT(card, 2, " idxterm");
 411                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 412                 if (buffer[4] == 0xf6) {
 413                         dev_err(&card->gdev->dev,
 414                         "The qeth device is not configured "
 415                         "for the OSI layer required by z/VM\n");
 416                         return -EPERM;
 417                 }
 418                 return -EIO;
 419         }
 420         return 0;
 421 }
 422
 423 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 424                 __u32 len)
 425 {
 426         struct qeth_card *card;
 427
 428         card = CARD_FROM_CDEV(channel->ccwdev);
 429         QETH_CARD_TEXT(card, 4, "setupccw");
 430         if (channel == &card->read)
 431                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 432         else
 433                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 434         channel->ccw.count = len;
 435         channel->ccw.cda = (__u32) __pa(iob);
 436 }
 437
 438 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 439 {
 440         __u8 index;
 441
 442         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 443         index = channel->io_buf_no;
 444         do {
 445                 if (channel->iob[index].state == BUF_STATE_FREE) {
 446                         channel->iob[index].state = BUF_STATE_LOCKED;
 447                         channel->io_buf_no = (channel->io_buf_no + 1) %
 448                                 QETH_CMD_BUFFER_NO;
 449                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 450                         return channel->iob + index;
 451                 }
 452                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 453         } while (index != channel->io_buf_no);
 454
 455         return NULL;
 456 }
 457
 458 void qeth_release_buffer(struct qeth_channel *channel,
 459                 struct qeth_cmd_buffer *iob)
 460 {
 461         unsigned long flags;
 462
 463         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 464         spin_lock_irqsave(&channel->iob_lock, flags);
 465         memset(iob->data, 0, QETH_BUFSIZE);
 466         iob->state = BUF_STATE_FREE;
 467         iob->callback = qeth_send_control_data_cb;
 468         iob->rc = 0;
 469         spin_unlock_irqrestore(&channel->iob_lock, flags);
 470 }
 471 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 472
 473 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 474 {
 475         struct qeth_cmd_buffer *buffer = NULL;
 476         unsigned long flags;
 477
 478         spin_lock_irqsave(&channel->iob_lock, flags);
 479         buffer = __qeth_get_buffer(channel);
 480         spin_unlock_irqrestore(&channel->iob_lock, flags);
 481         return buffer;
 482 }
 483
 484 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 485 {
 486         struct qeth_cmd_buffer *buffer;
 487         wait_event(channel->wait_q,
 488                    ((buffer = qeth_get_buffer(channel)) != NULL));
 489         return buffer;
 490 }
 491 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 492
 493 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 494 {
 495         int cnt;
 496
 497         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 498                 qeth_release_buffer(channel, &channel->iob[cnt]);
 499         channel->buf_no = 0;
 500         channel->io_buf_no = 0;
 501 }
 502 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 503
 504 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 505                   struct qeth_cmd_buffer *iob)
 506 {
 507         struct qeth_card *card;
 508         struct qeth_reply *reply, *r;
 509         struct qeth_ipa_cmd *cmd;
 510         unsigned long flags;
 511         int keep_reply;
 512         int rc = 0;
 513
 514         card = CARD_FROM_CDEV(channel->ccwdev);
 515         QETH_CARD_TEXT(card, 4, "sndctlcb");
 516         rc = qeth_check_idx_response(card, iob->data);
 517         switch (rc) {
 518         case 0:
 519                 break;
 520         case -EIO:
 521                 qeth_clear_ipacmd_list(card);
 522                 qeth_schedule_recovery(card);
 523                 /* fall through */
 524         default:
 525                 goto out;
 526         }
 527
 528         cmd = qeth_check_ipa_data(card, iob);
 529         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 530                 goto out;
 531         /*in case of OSN : check if cmd is set */
 532         if (card->info.type == QETH_CARD_TYPE_OSN &&
 533             cmd &&
 534             cmd->hdr.command != IPA_CMD_STARTLAN &&
 535             card->osn_info.assist_cb != NULL) {
 536                 card->osn_info.assist_cb(card->dev, cmd);
 537                 goto out;
 538         }
 539
 540         spin_lock_irqsave(&card->lock, flags);
 541         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 542                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 543                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 544                         qeth_get_reply(reply);
 545                         list_del_init(&reply->list);
 546                         spin_unlock_irqrestore(&card->lock, flags);
 547                         keep_reply = 0;
 548                         if (reply->callback != NULL) {
 549                                 if (cmd) {
 550                                         reply->offset = (__u16)((char *)cmd -
 551                                                         (char *)iob->data);
 552                                         keep_reply = reply->callback(card,
 553                                                         reply,
 554                                                         (unsigned long)cmd);
 555                                 } else
 556                                         keep_reply = reply->callback(card,
 557                                                         reply,
 558                                                         (unsigned long)iob);
 559                         }
 560                         if (cmd)
 561                                 reply->rc = (u16) cmd->hdr.return_code;
 562                         else if (iob->rc)
 563                                 reply->rc = iob->rc;
 564                         if (keep_reply) {
 565                                 spin_lock_irqsave(&card->lock, flags);
 566                                 list_add_tail(&reply->list,
 567                                               &card->cmd_waiter_list);
 568                                 spin_unlock_irqrestore(&card->lock, flags);
 569                         } else {
 570                                 atomic_inc(&reply->received);
 571                                 wake_up(&reply->wait_q);
 572                         }
 573                         qeth_put_reply(reply);
 574                         goto out;
 575                 }
 576         }
 577         spin_unlock_irqrestore(&card->lock, flags);
 578 out:
 579         memcpy(&card->seqno.pdu_hdr_ack,
 580                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 581                 QETH_SEQ_NO_LENGTH);
 582         qeth_release_buffer(channel, iob);
 583 }
 584
 585 static int qeth_setup_channel(struct qeth_channel *channel)
 586 {
 587         int cnt;
 588
 589         QETH_DBF_TEXT(SETUP, 2, "setupch");
 590         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 591                 channel->iob[cnt].data =
 592                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 593                 if (channel->iob[cnt].data == NULL)
 594                         break;
 595                 channel->iob[cnt].state = BUF_STATE_FREE;
 596                 channel->iob[cnt].channel = channel;
 597                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 598                 channel->iob[cnt].rc = 0;
 599         }
 600         if (cnt < QETH_CMD_BUFFER_NO) {
 601                 while (cnt-- > 0)
 602                         kfree(channel->iob[cnt].data);
 603                 return -ENOMEM;
 604         }
 605         channel->buf_no = 0;
 606         channel->io_buf_no = 0;
 607         atomic_set(&channel->irq_pending, 0);
 608         spin_lock_init(&channel->iob_lock);
 609
 610         init_waitqueue_head(&channel->wait_q);
 611         return 0;
 612 }
 613
 614 static int qeth_set_thread_start_bit(struct qeth_card *card,
 615                 unsigned long thread)
 616 {
 617         unsigned long flags;
 618
 619         spin_lock_irqsave(&card->thread_mask_lock, flags);
 620         if (!(card->thread_allowed_mask & thread) ||
 621               (card->thread_start_mask & thread)) {
 622                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 623                 return -EPERM;
 624         }
 625         card->thread_start_mask |= thread;
 626         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 627         return 0;
 628 }
 629
 630 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 631 {
 632         unsigned long flags;
 633
 634         spin_lock_irqsave(&card->thread_mask_lock, flags);
 635         card->thread_start_mask &= ~thread;
 636         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 637         wake_up(&card->wait_q);
 638 }
 639 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 640
 641 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 642 {
 643         unsigned long flags;
 644
 645         spin_lock_irqsave(&card->thread_mask_lock, flags);
 646         card->thread_running_mask &= ~thread;
 647         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 648         wake_up(&card->wait_q);
 649 }
 650 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 651
 652 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 653 {
 654         unsigned long flags;
 655         int rc = 0;
 656
 657         spin_lock_irqsave(&card->thread_mask_lock, flags);
 658         if (card->thread_start_mask & thread) {
 659                 if ((card->thread_allowed_mask & thread) &&
 660                     !(card->thread_running_mask & thread)) {
 661                         rc = 1;
 662                         card->thread_start_mask &= ~thread;
 663                         card->thread_running_mask |= thread;
 664                 } else
 665                         rc = -EPERM;
 666         }
 667         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 668         return rc;
 669 }
 670
 671 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 672 {
 673         int rc = 0;
 674
 675         wait_event(card->wait_q,
 676                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 677         return rc;
 678 }
 679 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 680
 681 void qeth_schedule_recovery(struct qeth_card *card)
 682 {
 683         QETH_CARD_TEXT(card, 2, "startrec");
 684         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 685                 schedule_work(&card->kernel_thread_starter);
 686 }
 687 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 688
 689 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 690 {
 691         int dstat, cstat;
 692         char *sense;
 693         struct qeth_card *card;
 694
 695         sense = (char *) irb->ecw;
 696         cstat = irb->scsw.cmd.cstat;
 697         dstat = irb->scsw.cmd.dstat;
 698         card = CARD_FROM_CDEV(cdev);
 699
 700         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 701                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 702                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 703                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 704                 dev_warn(&cdev->dev, "The qeth device driver "
 705                         "failed to recover an error on the device\n");
 706                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 707                         dev_name(&cdev->dev), dstat, cstat);
 708                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 709                                 16, 1, irb, 64, 1);
 710                 return 1;
 711         }
 712
 713         if (dstat & DEV_STAT_UNIT_CHECK) {
 714                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 715                     SENSE_RESETTING_EVENT_FLAG) {
 716                         QETH_CARD_TEXT(card, 2, "REVIND");
 717                         return 1;
 718                 }
 719                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 720                     SENSE_COMMAND_REJECT_FLAG) {
 721                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 722                         return 1;
 723                 }
 724                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 725                         QETH_CARD_TEXT(card, 2, "AFFE");
 726                         return 1;
 727                 }
 728                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 729                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 730                         return 0;
 731                 }
 732                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 733                         return 1;
 734         }
 735         return 0;
 736 }
 737
 738 static long __qeth_check_irb_error(struct ccw_device *cdev,
 739                 unsigned long intparm, struct irb *irb)
 740 {
 741         struct qeth_card *card;
 742
 743         card = CARD_FROM_CDEV(cdev);
 744
 745         if (!IS_ERR(irb))
 746                 return 0;
 747
 748         switch (PTR_ERR(irb)) {
 749         case -EIO:
 750                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 751                         dev_name(&cdev->dev));
 752                 QETH_CARD_TEXT(card, 2, "ckirberr");
 753                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 754                 break;
 755         case -ETIMEDOUT:
 756                 dev_warn(&cdev->dev, "A hardware operation timed out"
 757                         " on the device\n");
 758                 QETH_CARD_TEXT(card, 2, "ckirberr");
 759                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 760                 if (intparm == QETH_RCD_PARM) {
 761                         if (card && (card->data.ccwdev == cdev)) {
 762                                 card->data.state = CH_STATE_DOWN;
 763                                 wake_up(&card->wait_q);
 764                         }
 765                 }
 766                 break;
 767         default:
 768                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 769                         dev_name(&cdev->dev), PTR_ERR(irb));
 770                 QETH_CARD_TEXT(card, 2, "ckirberr");
 771                 QETH_CARD_TEXT(card, 2, "  rc???");
 772         }
 773         return PTR_ERR(irb);
 774 }
 775
 776 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 777                 struct irb *irb)
 778 {
 779         int rc;
 780         int cstat, dstat;
 781         struct qeth_cmd_buffer *buffer;
 782         struct qeth_channel *channel;
 783         struct qeth_card *card;
 784         struct qeth_cmd_buffer *iob;
 785         __u8 index;
 786
 787         if (__qeth_check_irb_error(cdev, intparm, irb))
 788                 return;
 789         cstat = irb->scsw.cmd.cstat;
 790         dstat = irb->scsw.cmd.dstat;
 791
 792         card = CARD_FROM_CDEV(cdev);
 793         if (!card)
 794                 return;
 795
 796         QETH_CARD_TEXT(card, 5, "irq");
 797
 798         if (card->read.ccwdev == cdev) {
 799                 channel = &card->read;
 800                 QETH_CARD_TEXT(card, 5, "read");
 801         } else if (card->write.ccwdev == cdev) {
 802                 channel = &card->write;
 803                 QETH_CARD_TEXT(card, 5, "write");
 804         } else {
 805                 channel = &card->data;
 806                 QETH_CARD_TEXT(card, 5, "data");
 807         }
 808         atomic_set(&channel->irq_pending, 0);
 809
 810         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 811                 channel->state = CH_STATE_STOPPED;
 812
 813         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 814                 channel->state = CH_STATE_HALTED;
 815
 816         /*let's wake up immediately on data channel*/
 817         if ((channel == &card->data) && (intparm != 0) &&
 818             (intparm != QETH_RCD_PARM))
 819                 goto out;
 820
 821         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 822                 QETH_CARD_TEXT(card, 6, "clrchpar");
 823                 /* we don't have to handle this further */
 824                 intparm = 0;
 825         }
 826         if (intparm == QETH_HALT_CHANNEL_PARM) {
 827                 QETH_CARD_TEXT(card, 6, "hltchpar");
 828                 /* we don't have to handle this further */
 829                 intparm = 0;
 830         }
 831         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 832             (dstat & DEV_STAT_UNIT_CHECK) ||
 833             (cstat)) {
 834                 if (irb->esw.esw0.erw.cons) {
 835                         dev_warn(&channel->ccwdev->dev,
 836                                 "The qeth device driver failed to recover "
 837                                 "an error on the device\n");
 838                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 839                                 "0x%X dstat 0x%X\n",
 840                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 841                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 842                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 843                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 844                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 845                 }
 846                 if (intparm == QETH_RCD_PARM) {
 847                         channel->state = CH_STATE_DOWN;
 848                         goto out;
 849                 }
 850                 rc = qeth_get_problem(cdev, irb);
 851                 if (rc) {
 852                         qeth_clear_ipacmd_list(card);
 853                         qeth_schedule_recovery(card);
 854                         goto out;
 855                 }
 856         }
 857
 858         if (intparm == QETH_RCD_PARM) {
 859                 channel->state = CH_STATE_RCD_DONE;
 860                 goto out;
 861         }
 862         if (intparm) {
 863                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 864                 buffer->state = BUF_STATE_PROCESSED;
 865         }
 866         if (channel == &card->data)
 867                 return;
 868         if (channel == &card->read &&
 869             channel->state == CH_STATE_UP)
 870                 qeth_issue_next_read(card);
 871
 872         iob = channel->iob;
 873         index = channel->buf_no;
 874         while (iob[index].state == BUF_STATE_PROCESSED) {
 875                 if (iob[index].callback != NULL)
 876                         iob[index].callback(channel, iob + index);
 877
 878                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 879         }
 880         channel->buf_no = index;
 881 out:
 882         wake_up(&card->wait_q);
 883         return;
 884 }
 885
 886 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 887                 struct qeth_qdio_out_buffer *buf)
 888 {
 889         int i;
 890         struct sk_buff *skb;
 891
 892         /* is PCI flag set on buffer? */
 893         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
 894                 atomic_dec(&queue->set_pci_flags_count);
 895
 896         skb = skb_dequeue(&buf->skb_list);
 897         while (skb) {
 898                 atomic_dec(&skb->users);
 899                 dev_kfree_skb_any(skb);
 900                 skb = skb_dequeue(&buf->skb_list);
 901         }
 902         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 903                 if (buf->buffer->element[i].addr && buf->is_header[i])
 904                         kmem_cache_free(qeth_core_header_cache,
 905                                 buf->buffer->element[i].addr);
 906                 buf->is_header[i] = 0;
 907                 buf->buffer->element[i].length = 0;
 908                 buf->buffer->element[i].addr = NULL;
 909                 buf->buffer->element[i].eflags = 0;
 910                 buf->buffer->element[i].sflags = 0;
 911         }
 912         buf->buffer->element[15].eflags = 0;
 913         buf->buffer->element[15].sflags = 0;
 914         buf->next_element_to_fill = 0;
 915         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 916 }
 917
 918 void qeth_clear_qdio_buffers(struct qeth_card *card)
 919 {
 920         int i, j;
 921
 922         QETH_CARD_TEXT(card, 2, "clearqdbf");
 923         /* clear outbound buffers to free skbs */
 924         for (i = 0; i < card->qdio.no_out_queues; ++i)
 925                 if (card->qdio.out_qs[i]) {
 926                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 927                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 928                                                 &card->qdio.out_qs[i]->bufs[j]);
 929                 }
 930 }
 931 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 932
 933 static void qeth_free_buffer_pool(struct qeth_card *card)
 934 {
 935         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 936         int i = 0;
 937         list_for_each_entry_safe(pool_entry, tmp,
 938                                  &card->qdio.init_pool.entry_list, init_list){
 939                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 940                         free_page((unsigned long)pool_entry->elements[i]);
 941                 list_del(&pool_entry->init_list);
 942                 kfree(pool_entry);
 943         }
 944 }
 945
 946 static void qeth_free_qdio_buffers(struct qeth_card *card)
 947 {
 948         int i, j;
 949
 950         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 951                 QETH_QDIO_UNINITIALIZED)
 952                 return;
 953         kfree(card->qdio.in_q);
 954         card->qdio.in_q = NULL;
 955         /* inbound buffer pool */
 956         qeth_free_buffer_pool(card);
 957         /* free outbound qdio_qs */
 958         if (card->qdio.out_qs) {
 959                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 960                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 961                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 962                                                 &card->qdio.out_qs[i]->bufs[j]);
 963                         kfree(card->qdio.out_qs[i]);
 964                 }
 965                 kfree(card->qdio.out_qs);
 966                 card->qdio.out_qs = NULL;
 967         }
 968 }
 969
 970 static void qeth_clean_channel(struct qeth_channel *channel)
 971 {
 972         int cnt;
 973
 974         QETH_DBF_TEXT(SETUP, 2, "freech");
 975         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 976                 kfree(channel->iob[cnt].data);
 977 }
 978
 979 static void qeth_get_channel_path_desc(struct qeth_card *card)
 980 {
 981         struct ccw_device *ccwdev;
 982         struct channelPath_dsc {
 983                 u8 flags;
 984                 u8 lsn;
 985                 u8 desc;
 986                 u8 chpid;
 987                 u8 swla;
 988                 u8 zeroes;
 989                 u8 chla;
 990                 u8 chpp;
 991         } *chp_dsc;
 992
 993         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
 994
 995         ccwdev = card->data.ccwdev;
 996         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
 997         if (chp_dsc != NULL) {
 998                 /* CHPP field bit 6 == 1 -> single queue */
 999                 if ((chp_dsc->chpp & 0x02) == 0x02) {
1000                         if ((atomic_read(&card->qdio.state) !=
1001                                 QETH_QDIO_UNINITIALIZED) &&
1002                             (card->qdio.no_out_queues == 4))
1003                                 /* change from 4 to 1 outbound queues */
1004                                 qeth_free_qdio_buffers(card);
1005                         card->qdio.no_out_queues = 1;
1006                         if (card->qdio.default_out_queue != 0)
1007                                 dev_info(&card->gdev->dev,
1008                                         "Priority Queueing not supported\n");
1009                         card->qdio.default_out_queue = 0;
1010                 } else {
1011                         if ((atomic_read(&card->qdio.state) !=
1012                                 QETH_QDIO_UNINITIALIZED) &&
1013                             (card->qdio.no_out_queues == 1)) {
1014                                 /* change from 1 to 4 outbound queues */
1015                                 qeth_free_qdio_buffers(card);
1016                                 card->qdio.default_out_queue = 2;
1017                         }
1018                         card->qdio.no_out_queues = 4;
1019                 }
1020                 card->info.func_level = 0x4100 + chp_dsc->desc;
1021                 kfree(chp_dsc);
1022         }
1023         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1024         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1025         return;
1026 }
1027
1028 static void qeth_init_qdio_info(struct qeth_card *card)
1029 {
1030         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1031         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1032         /* inbound */
1033         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1034         if (card->info.type == QETH_CARD_TYPE_IQD)
1035                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1036         else
1037                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1038         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1039         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1040         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1041 }
1042
1043 static void qeth_set_intial_options(struct qeth_card *card)
1044 {
1045         card->options.route4.type = NO_ROUTER;
1046         card->options.route6.type = NO_ROUTER;
1047         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1048         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1049         card->options.fake_broadcast = 0;
1050         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1051         card->options.performance_stats = 0;
1052         card->options.rx_sg_cb = QETH_RX_SG_CB;
1053         card->options.isolation = ISOLATION_MODE_NONE;
1054 }
1055
1056 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1057 {
1058         unsigned long flags;
1059         int rc = 0;
1060
1061         spin_lock_irqsave(&card->thread_mask_lock, flags);
1062         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1063                         (u8) card->thread_start_mask,
1064                         (u8) card->thread_allowed_mask,
1065                         (u8) card->thread_running_mask);
1066         rc = (card->thread_start_mask & thread);
1067         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1068         return rc;
1069 }
1070
1071 static void qeth_start_kernel_thread(struct work_struct *work)
1072 {
1073         struct qeth_card *card = container_of(work, struct qeth_card,
1074                                         kernel_thread_starter);
1075         QETH_CARD_TEXT(card , 2, "strthrd");
1076
1077         if (card->read.state != CH_STATE_UP &&
1078             card->write.state != CH_STATE_UP)
1079                 return;
1080         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1081                 kthread_run(card->discipline.recover, (void *) card,
1082                                 "qeth_recover");
1083 }
1084
1085 static int qeth_setup_card(struct qeth_card *card)
1086 {
1087
1088         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1089         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1090
1091         card->read.state  = CH_STATE_DOWN;
1092         card->write.state = CH_STATE_DOWN;
1093         card->data.state  = CH_STATE_DOWN;
1094         card->state = CARD_STATE_DOWN;
1095         card->lan_online = 0;
1096         card->read_or_write_problem = 0;
1097         card->dev = NULL;
1098         spin_lock_init(&card->vlanlock);
1099         spin_lock_init(&card->mclock);
1100         spin_lock_init(&card->lock);
1101         spin_lock_init(&card->ip_lock);
1102         spin_lock_init(&card->thread_mask_lock);
1103         mutex_init(&card->conf_mutex);
1104         mutex_init(&card->discipline_mutex);
1105         card->thread_start_mask = 0;
1106         card->thread_allowed_mask = 0;
1107         card->thread_running_mask = 0;
1108         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1109         INIT_LIST_HEAD(&card->ip_list);
1110         INIT_LIST_HEAD(card->ip_tbd_list);
1111         INIT_LIST_HEAD(&card->cmd_waiter_list);
1112         init_waitqueue_head(&card->wait_q);
1113         /* initial options */
1114         qeth_set_intial_options(card);
1115         /* IP address takeover */
1116         INIT_LIST_HEAD(&card->ipato.entries);
1117         card->ipato.enabled = 0;
1118         card->ipato.invert4 = 0;
1119         card->ipato.invert6 = 0;
1120         /* init QDIO stuff */
1121         qeth_init_qdio_info(card);
1122         return 0;
1123 }
1124
1125 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1126 {
1127         struct qeth_card *card = container_of(slr, struct qeth_card,
1128                                         qeth_service_level);
1129         if (card->info.mcl_level[0])
1130                 seq_printf(m, "qeth: %s firmware level %s\n",
1131                         CARD_BUS_ID(card), card->info.mcl_level);
1132 }
1133
1134 static struct qeth_card *qeth_alloc_card(void)
1135 {
1136         struct qeth_card *card;
1137
1138         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1139         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1140         if (!card)
1141                 goto out;
1142         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1143         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1144         if (!card->ip_tbd_list) {
1145                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1146                 goto out_card;
1147         }
1148         if (qeth_setup_channel(&card->read))
1149                 goto out_ip;
1150         if (qeth_setup_channel(&card->write))
1151                 goto out_channel;
1152         card->options.layer2 = -1;
1153         card->qeth_service_level.seq_print = qeth_core_sl_print;
1154         register_service_level(&card->qeth_service_level);
1155         return card;
1156
1157 out_channel:
1158         qeth_clean_channel(&card->read);
1159 out_ip:
1160         kfree(card->ip_tbd_list);
1161 out_card:
1162         kfree(card);
1163 out:
1164         return NULL;
1165 }
1166
1167 static int qeth_determine_card_type(struct qeth_card *card)
1168 {
1169         int i = 0;
1170
1171         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1172
1173         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1174         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1175         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1176                 if ((CARD_RDEV(card)->id.dev_type ==
1177                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1178                     (CARD_RDEV(card)->id.dev_model ==
1179                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1180                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1181                         card->qdio.no_out_queues =
1182                                 known_devices[i][QETH_QUEUE_NO_IND];
1183                         card->info.is_multicast_different =
1184                                 known_devices[i][QETH_MULTICAST_IND];
1185                         qeth_get_channel_path_desc(card);
1186                         return 0;
1187                 }
1188                 i++;
1189         }
1190         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1191         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1192                 "unknown type\n");
1193         return -ENOENT;
1194 }
1195
1196 static int qeth_clear_channel(struct qeth_channel *channel)
1197 {
1198         unsigned long flags;
1199         struct qeth_card *card;
1200         int rc;
1201
1202         card = CARD_FROM_CDEV(channel->ccwdev);
1203         QETH_CARD_TEXT(card, 3, "clearch");
1204         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1205         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1206         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1207
1208         if (rc)
1209                 return rc;
1210         rc = wait_event_interruptible_timeout(card->wait_q,
1211                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1212         if (rc == -ERESTARTSYS)
1213                 return rc;
1214         if (channel->state != CH_STATE_STOPPED)
1215                 return -ETIME;
1216         channel->state = CH_STATE_DOWN;
1217         return 0;
1218 }
1219
1220 static int qeth_halt_channel(struct qeth_channel *channel)
1221 {
1222         unsigned long flags;
1223         struct qeth_card *card;
1224         int rc;
1225
1226         card = CARD_FROM_CDEV(channel->ccwdev);
1227         QETH_CARD_TEXT(card, 3, "haltch");
1228         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1229         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1230         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1231
1232         if (rc)
1233                 return rc;
1234         rc = wait_event_interruptible_timeout(card->wait_q,
1235                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1236         if (rc == -ERESTARTSYS)
1237                 return rc;
1238         if (channel->state != CH_STATE_HALTED)
1239                 return -ETIME;
1240         return 0;
1241 }
1242
1243 static int qeth_halt_channels(struct qeth_card *card)
1244 {
1245         int rc1 = 0, rc2 = 0, rc3 = 0;
1246
1247         QETH_CARD_TEXT(card, 3, "haltchs");
1248         rc1 = qeth_halt_channel(&card->read);
1249         rc2 = qeth_halt_channel(&card->write);
1250         rc3 = qeth_halt_channel(&card->data);
1251         if (rc1)
1252                 return rc1;
1253         if (rc2)
1254                 return rc2;
1255         return rc3;
1256 }
1257
1258 static int qeth_clear_channels(struct qeth_card *card)
1259 {
1260         int rc1 = 0, rc2 = 0, rc3 = 0;
1261
1262         QETH_CARD_TEXT(card, 3, "clearchs");
1263         rc1 = qeth_clear_channel(&card->read);
1264         rc2 = qeth_clear_channel(&card->write);
1265         rc3 = qeth_clear_channel(&card->data);
1266         if (rc1)
1267                 return rc1;
1268         if (rc2)
1269                 return rc2;
1270         return rc3;
1271 }
1272
1273 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1274 {
1275         int rc = 0;
1276
1277         QETH_CARD_TEXT(card, 3, "clhacrd");
1278
1279         if (halt)
1280                 rc = qeth_halt_channels(card);
1281         if (rc)
1282                 return rc;
1283         return qeth_clear_channels(card);
1284 }
1285
1286 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1287 {
1288         int rc = 0;
1289
1290         QETH_CARD_TEXT(card, 3, "qdioclr");
1291         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1292                 QETH_QDIO_CLEANING)) {
1293         case QETH_QDIO_ESTABLISHED:
1294                 if (card->info.type == QETH_CARD_TYPE_IQD)
1295                         rc = qdio_shutdown(CARD_DDEV(card),
1296                                 QDIO_FLAG_CLEANUP_USING_HALT);
1297                 else
1298                         rc = qdio_shutdown(CARD_DDEV(card),
1299                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1300                 if (rc)
1301                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1302                 qdio_free(CARD_DDEV(card));
1303                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1304                 break;
1305         case QETH_QDIO_CLEANING:
1306                 return rc;
1307         default:
1308                 break;
1309         }
1310         rc = qeth_clear_halt_card(card, use_halt);
1311         if (rc)
1312                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1313         card->state = CARD_STATE_DOWN;
1314         return rc;
1315 }
1316 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1317
1318 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1319                                int *length)
1320 {
1321         struct ciw *ciw;
1322         char *rcd_buf;
1323         int ret;
1324         struct qeth_channel *channel = &card->data;
1325         unsigned long flags;
1326
1327         /*
1328          * scan for RCD command in extended SenseID data
1329          */
1330         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1331         if (!ciw || ciw->cmd == 0)
1332                 return -EOPNOTSUPP;
1333         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1334         if (!rcd_buf)
1335                 return -ENOMEM;
1336
1337         channel->ccw.cmd_code = ciw->cmd;
1338         channel->ccw.cda = (__u32) __pa(rcd_buf);
1339         channel->ccw.count = ciw->count;
1340         channel->ccw.flags = CCW_FLAG_SLI;
1341         channel->state = CH_STATE_RCD;
1342         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1343         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1344                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1345                                        QETH_RCD_TIMEOUT);
1346         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1347         if (!ret)
1348                 wait_event(card->wait_q,
1349                            (channel->state == CH_STATE_RCD_DONE ||
1350                             channel->state == CH_STATE_DOWN));
1351         if (channel->state == CH_STATE_DOWN)
1352                 ret = -EIO;
1353         else
1354                 channel->state = CH_STATE_DOWN;
1355         if (ret) {
1356                 kfree(rcd_buf);
1357                 *buffer = NULL;
1358                 *length = 0;
1359         } else {
1360                 *length = ciw->count;
1361                 *buffer = rcd_buf;
1362         }
1363         return ret;
1364 }
1365
1366 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1367 {
1368         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1369         card->info.chpid = prcd[30];
1370         card->info.unit_addr2 = prcd[31];
1371         card->info.cula = prcd[63];
1372         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1373                                (prcd[0x11] == _ascebc['M']));
1374 }
1375
1376 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1377 {
1378         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1379
1380         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1381                 card->info.blkt.time_total = 250;
1382                 card->info.blkt.inter_packet = 5;
1383                 card->info.blkt.inter_packet_jumbo = 15;
1384         } else {
1385                 card->info.blkt.time_total = 0;
1386                 card->info.blkt.inter_packet = 0;
1387                 card->info.blkt.inter_packet_jumbo = 0;
1388         }
1389 }
1390
1391 static void qeth_init_tokens(struct qeth_card *card)
1392 {
1393         card->token.issuer_rm_w = 0x00010103UL;
1394         card->token.cm_filter_w = 0x00010108UL;
1395         card->token.cm_connection_w = 0x0001010aUL;
1396         card->token.ulp_filter_w = 0x0001010bUL;
1397         card->token.ulp_connection_w = 0x0001010dUL;
1398 }
1399
1400 static void qeth_init_func_level(struct qeth_card *card)
1401 {
1402         switch (card->info.type) {
1403         case QETH_CARD_TYPE_IQD:
1404                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1405                 break;
1406         case QETH_CARD_TYPE_OSD:
1407         case QETH_CARD_TYPE_OSN:
1408                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1409                 break;
1410         default:
1411                 break;
1412         }
1413 }
1414
1415 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1416                 void (*idx_reply_cb)(struct qeth_channel *,
1417                         struct qeth_cmd_buffer *))
1418 {
1419         struct qeth_cmd_buffer *iob;
1420         unsigned long flags;
1421         int rc;
1422         struct qeth_card *card;
1423
1424         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1425         card = CARD_FROM_CDEV(channel->ccwdev);
1426         iob = qeth_get_buffer(channel);
1427         iob->callback = idx_reply_cb;
1428         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1429         channel->ccw.count = QETH_BUFSIZE;
1430         channel->ccw.cda = (__u32) __pa(iob->data);
1431
1432         wait_event(card->wait_q,
1433                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1434         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1435         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1436         rc = ccw_device_start(channel->ccwdev,
1437                               &channel->ccw, (addr_t) iob, 0, 0);
1438         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1439
1440         if (rc) {
1441                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1442                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1443                 atomic_set(&channel->irq_pending, 0);
1444                 wake_up(&card->wait_q);
1445                 return rc;
1446         }
1447         rc = wait_event_interruptible_timeout(card->wait_q,
1448                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1449         if (rc == -ERESTARTSYS)
1450                 return rc;
1451         if (channel->state != CH_STATE_UP) {
1452                 rc = -ETIME;
1453                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1454                 qeth_clear_cmd_buffers(channel);
1455         } else
1456                 rc = 0;
1457         return rc;
1458 }
1459
1460 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1461                 void (*idx_reply_cb)(struct qeth_channel *,
1462                         struct qeth_cmd_buffer *))
1463 {
1464         struct qeth_card *card;
1465         struct qeth_cmd_buffer *iob;
1466         unsigned long flags;
1467         __u16 temp;
1468         __u8 tmp;
1469         int rc;
1470         struct ccw_dev_id temp_devid;
1471
1472         card = CARD_FROM_CDEV(channel->ccwdev);
1473
1474         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1475
1476         iob = qeth_get_buffer(channel);
1477         iob->callback = idx_reply_cb;
1478         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1479         channel->ccw.count = IDX_ACTIVATE_SIZE;
1480         channel->ccw.cda = (__u32) __pa(iob->data);
1481         if (channel == &card->write) {
1482                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1483                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1484                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1485                 card->seqno.trans_hdr++;
1486         } else {
1487                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1488                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1489                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1490         }
1491         tmp = ((__u8)card->info.portno) | 0x80;
1492         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1493         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1494                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1495         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1496                &card->info.func_level, sizeof(__u16));
1497         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1498         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1499         temp = (card->info.cula << 8) + card->info.unit_addr2;
1500         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1501
1502         wait_event(card->wait_q,
1503                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1504         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1505         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1506         rc = ccw_device_start(channel->ccwdev,
1507                               &channel->ccw, (addr_t) iob, 0, 0);
1508         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1509
1510         if (rc) {
1511                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1512                         rc);
1513                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1514                 atomic_set(&channel->irq_pending, 0);
1515                 wake_up(&card->wait_q);
1516                 return rc;
1517         }
1518         rc = wait_event_interruptible_timeout(card->wait_q,
1519                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1520         if (rc == -ERESTARTSYS)
1521                 return rc;
1522         if (channel->state != CH_STATE_ACTIVATING) {
1523                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1524                         " failed to recover an error on the device\n");
1525                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1526                         dev_name(&channel->ccwdev->dev));
1527                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1528                 qeth_clear_cmd_buffers(channel);
1529                 return -ETIME;
1530         }
1531         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1532 }
1533
1534 static int qeth_peer_func_level(int level)
1535 {
1536         if ((level & 0xff) == 8)
1537                 return (level & 0xff) + 0x400;
1538         if (((level >> 8) & 3) == 1)
1539                 return (level & 0xff) + 0x200;
1540         return level;
1541 }
1542
1543 static void qeth_idx_write_cb(struct qeth_channel *channel,
1544                 struct qeth_cmd_buffer *iob)
1545 {
1546         struct qeth_card *card;
1547         __u16 temp;
1548
1549         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1550
1551         if (channel->state == CH_STATE_DOWN) {
1552                 channel->state = CH_STATE_ACTIVATING;
1553                 goto out;
1554         }
1555         card = CARD_FROM_CDEV(channel->ccwdev);
1556
1557         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1558                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1559                         dev_err(&card->write.ccwdev->dev,
1560                                 "The adapter is used exclusively by another "
1561                                 "host\n");
1562                 else
1563                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1564                                 " negative reply\n",
1565                                 dev_name(&card->write.ccwdev->dev));
1566                 goto out;
1567         }
1568         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1569         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1570                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1571                         "function level mismatch (sent: 0x%x, received: "
1572                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1573                         card->info.func_level, temp);
1574                 goto out;
1575         }
1576         channel->state = CH_STATE_UP;
1577 out:
1578         qeth_release_buffer(channel, iob);
1579 }
1580
1581 static void qeth_idx_read_cb(struct qeth_channel *channel,
1582                 struct qeth_cmd_buffer *iob)
1583 {
1584         struct qeth_card *card;
1585         __u16 temp;
1586
1587         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1588         if (channel->state == CH_STATE_DOWN) {
1589                 channel->state = CH_STATE_ACTIVATING;
1590                 goto out;
1591         }
1592
1593         card = CARD_FROM_CDEV(channel->ccwdev);
1594         if (qeth_check_idx_response(card, iob->data))
1595                         goto out;
1596
1597         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1598                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1599                 case QETH_IDX_ACT_ERR_EXCL:
1600                         dev_err(&card->write.ccwdev->dev,
1601                                 "The adapter is used exclusively by another "
1602                                 "host\n");
1603                         break;
1604                 case QETH_IDX_ACT_ERR_AUTH:
1605                 case QETH_IDX_ACT_ERR_AUTH_USER:
1606                         dev_err(&card->read.ccwdev->dev,
1607                                 "Setting the device online failed because of "
1608                                 "insufficient authorization\n");
1609                         break;
1610                 default:
1611                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1612                                 " negative reply\n",
1613                                 dev_name(&card->read.ccwdev->dev));
1614                 }
1615                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1616                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1617                 goto out;
1618         }
1619
1620 /**
1621  *  * temporary fix for microcode bug
1622  *   * to revert it,replace OR by AND
1623  *    */
1624         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1625              (card->info.type == QETH_CARD_TYPE_OSD))
1626                 card->info.portname_required = 1;
1627
1628         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1629         if (temp != qeth_peer_func_level(card->info.func_level)) {
1630                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1631                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1632                         dev_name(&card->read.ccwdev->dev),
1633                         card->info.func_level, temp);
1634                 goto out;
1635         }
1636         memcpy(&card->token.issuer_rm_r,
1637                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1638                QETH_MPC_TOKEN_LENGTH);
1639         memcpy(&card->info.mcl_level[0],
1640                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1641         channel->state = CH_STATE_UP;
1642 out:
1643         qeth_release_buffer(channel, iob);
1644 }
1645
1646 void qeth_prepare_control_data(struct qeth_card *card, int len,
1647                 struct qeth_cmd_buffer *iob)
1648 {
1649         qeth_setup_ccw(&card->write, iob->data, len);
1650         iob->callback = qeth_release_buffer;
1651
1652         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1653                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1654         card->seqno.trans_hdr++;
1655         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1656                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1657         card->seqno.pdu_hdr++;
1658         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1659                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1660         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1661 }
1662 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1663
1664 int qeth_send_control_data(struct qeth_card *card, int len,
1665                 struct qeth_cmd_buffer *iob,
1666                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1667                         unsigned long),
1668                 void *reply_param)
1669 {
1670         int rc;
1671         unsigned long flags;
1672         struct qeth_reply *reply = NULL;
1673         unsigned long timeout, event_timeout;
1674         struct qeth_ipa_cmd *cmd;
1675
1676         QETH_CARD_TEXT(card, 2, "sendctl");
1677
1678         if (card->read_or_write_problem) {
1679                 qeth_release_buffer(iob->channel, iob);
1680                 return -EIO;
1681         }
1682         reply = qeth_alloc_reply(card);
1683         if (!reply) {
1684                 return -ENOMEM;
1685         }
1686         reply->callback = reply_cb;
1687         reply->param = reply_param;
1688         if (card->state == CARD_STATE_DOWN)
1689                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1690         else
1691                 reply->seqno = card->seqno.ipa++;
1692         init_waitqueue_head(&reply->wait_q);
1693         spin_lock_irqsave(&card->lock, flags);
1694         list_add_tail(&reply->list, &card->cmd_waiter_list);
1695         spin_unlock_irqrestore(&card->lock, flags);
1696         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1697
1698         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1699         qeth_prepare_control_data(card, len, iob);
1700
1701         if (IS_IPA(iob->data))
1702                 event_timeout = QETH_IPA_TIMEOUT;
1703         else
1704                 event_timeout = QETH_TIMEOUT;
1705         timeout = jiffies + event_timeout;
1706
1707         QETH_CARD_TEXT(card, 6, "noirqpnd");
1708         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1709         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1710                               (addr_t) iob, 0, 0);
1711         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1712         if (rc) {
1713                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1714                         "ccw_device_start rc = %i\n",
1715                         dev_name(&card->write.ccwdev->dev), rc);
1716                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1717                 spin_lock_irqsave(&card->lock, flags);
1718                 list_del_init(&reply->list);
1719                 qeth_put_reply(reply);
1720                 spin_unlock_irqrestore(&card->lock, flags);
1721                 qeth_release_buffer(iob->channel, iob);
1722                 atomic_set(&card->write.irq_pending, 0);
1723                 wake_up(&card->wait_q);
1724                 return rc;
1725         }
1726
1727         /* we have only one long running ipassist, since we can ensure
1728            process context of this command we can sleep */
1729         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1730         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1731             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1732                 if (!wait_event_timeout(reply->wait_q,
1733                     atomic_read(&reply->received), event_timeout))
1734                         goto time_err;
1735         } else {
1736                 while (!atomic_read(&reply->received)) {
1737                         if (time_after(jiffies, timeout))
1738                                 goto time_err;
1739                         cpu_relax();
1740                 };
1741         }
1742
1743         if (reply->rc == -EIO)
1744                 goto error;
1745         rc = reply->rc;
1746         qeth_put_reply(reply);
1747         return rc;
1748
1749 time_err:
1750         reply->rc = -ETIME;
1751         spin_lock_irqsave(&reply->card->lock, flags);
1752         list_del_init(&reply->list);
1753         spin_unlock_irqrestore(&reply->card->lock, flags);
1754         atomic_inc(&reply->received);
1755 error:
1756         atomic_set(&card->write.irq_pending, 0);
1757         qeth_release_buffer(iob->channel, iob);
1758         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
1759         rc = reply->rc;
1760         qeth_put_reply(reply);
1761         return rc;
1762 }
1763 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1764
1765 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1766                 unsigned long data)
1767 {
1768         struct qeth_cmd_buffer *iob;
1769
1770         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1771
1772         iob = (struct qeth_cmd_buffer *) data;
1773         memcpy(&card->token.cm_filter_r,
1774                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1775                QETH_MPC_TOKEN_LENGTH);
1776         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1777         return 0;
1778 }
1779
1780 static int qeth_cm_enable(struct qeth_card *card)
1781 {
1782         int rc;
1783         struct qeth_cmd_buffer *iob;
1784
1785         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1786
1787         iob = qeth_wait_for_buffer(&card->write);
1788         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1789         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1790                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1791         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1792                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1793
1794         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1795                                     qeth_cm_enable_cb, NULL);
1796         return rc;
1797 }
1798
1799 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1800                 unsigned long data)
1801 {
1802
1803         struct qeth_cmd_buffer *iob;
1804
1805         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1806
1807         iob = (struct qeth_cmd_buffer *) data;
1808         memcpy(&card->token.cm_connection_r,
1809                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1810                QETH_MPC_TOKEN_LENGTH);
1811         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1812         return 0;
1813 }
1814
1815 static int qeth_cm_setup(struct qeth_card *card)
1816 {
1817         int rc;
1818         struct qeth_cmd_buffer *iob;
1819
1820         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1821
1822         iob = qeth_wait_for_buffer(&card->write);
1823         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1824         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1825                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1826         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1827                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1828         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1829                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1830         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1831                                     qeth_cm_setup_cb, NULL);
1832         return rc;
1833
1834 }
1835
1836 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1837 {
1838         switch (card->info.type) {
1839         case QETH_CARD_TYPE_UNKNOWN:
1840                 return 1500;
1841         case QETH_CARD_TYPE_IQD:
1842                 return card->info.max_mtu;
1843         case QETH_CARD_TYPE_OSD:
1844                 switch (card->info.link_type) {
1845                 case QETH_LINK_TYPE_HSTR:
1846                 case QETH_LINK_TYPE_LANE_TR:
1847                         return 2000;
1848                 default:
1849                         return 1492;
1850                 }
1851         case QETH_CARD_TYPE_OSM:
1852         case QETH_CARD_TYPE_OSX:
1853                 return 1492;
1854         default:
1855                 return 1500;
1856         }
1857 }
1858
1859 static inline int qeth_get_mtu_outof_framesize(int framesize)
1860 {
1861         switch (framesize) {
1862         case 0x4000:
1863                 return 8192;
1864         case 0x6000:
1865                 return 16384;
1866         case 0xa000:
1867                 return 32768;
1868         case 0xffff:
1869                 return 57344;
1870         default:
1871                 return 0;
1872         }
1873 }
1874
1875 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1876 {
1877         switch (card->info.type) {
1878         case QETH_CARD_TYPE_OSD:
1879         case QETH_CARD_TYPE_OSM:
1880         case QETH_CARD_TYPE_OSX:
1881         case QETH_CARD_TYPE_IQD:
1882                 return ((mtu >= 576) &&
1883                         (mtu <= card->info.max_mtu));
1884         case QETH_CARD_TYPE_OSN:
1885         case QETH_CARD_TYPE_UNKNOWN:
1886         default:
1887                 return 1;
1888         }
1889 }
1890
1891 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1892                 unsigned long data)
1893 {
1894
1895         __u16 mtu, framesize;
1896         __u16 len;
1897         __u8 link_type;
1898         struct qeth_cmd_buffer *iob;
1899
1900         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1901
1902         iob = (struct qeth_cmd_buffer *) data;
1903         memcpy(&card->token.ulp_filter_r,
1904                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1905                QETH_MPC_TOKEN_LENGTH);
1906         if (card->info.type == QETH_CARD_TYPE_IQD) {
1907                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1908                 mtu = qeth_get_mtu_outof_framesize(framesize);
1909                 if (!mtu) {
1910                         iob->rc = -EINVAL;
1911                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1912                         return 0;
1913                 }
1914                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
1915                         /* frame size has changed */
1916                         if (card->dev &&
1917                             ((card->dev->mtu == card->info.initial_mtu) ||
1918                              (card->dev->mtu > mtu)))
1919                                 card->dev->mtu = mtu;
1920                         qeth_free_qdio_buffers(card);
1921                 }
1922                 card->info.initial_mtu = mtu;
1923                 card->info.max_mtu = mtu;
1924                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1925         } else {
1926                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1927                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
1928                         iob->data);
1929                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1930         }
1931
1932         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1933         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1934                 memcpy(&link_type,
1935                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1936                 card->info.link_type = link_type;
1937         } else
1938                 card->info.link_type = 0;
1939         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1940         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1941         return 0;
1942 }
1943
1944 static int qeth_ulp_enable(struct qeth_card *card)
1945 {
1946         int rc;
1947         char prot_type;
1948         struct qeth_cmd_buffer *iob;
1949
1950         /*FIXME: trace view callbacks*/
1951         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1952
1953         iob = qeth_wait_for_buffer(&card->write);
1954         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1955
1956         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1957                 (__u8) card->info.portno;
1958         if (card->options.layer2)
1959                 if (card->info.type == QETH_CARD_TYPE_OSN)
1960                         prot_type = QETH_PROT_OSN2;
1961                 else
1962                         prot_type = QETH_PROT_LAYER2;
1963         else
1964                 prot_type = QETH_PROT_TCPIP;
1965
1966         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1967         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1968                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1969         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1970                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1971         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1972                card->info.portname, 9);
1973         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1974                                     qeth_ulp_enable_cb, NULL);
1975         return rc;
1976
1977 }
1978
1979 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1980                 unsigned long data)
1981 {
1982         struct qeth_cmd_buffer *iob;
1983         int rc = 0;
1984
1985         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1986
1987         iob = (struct qeth_cmd_buffer *) data;
1988         memcpy(&card->token.ulp_connection_r,
1989                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1990                QETH_MPC_TOKEN_LENGTH);
1991         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1992                      3)) {
1993                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1994                 dev_err(&card->gdev->dev, "A connection could not be "
1995                         "established because of an OLM limit\n");
1996                 iob->rc = -EMLINK;
1997         }
1998         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1999         return rc;
2000 }
2001
2002 static int qeth_ulp_setup(struct qeth_card *card)
2003 {
2004         int rc;
2005         __u16 temp;
2006         struct qeth_cmd_buffer *iob;
2007         struct ccw_dev_id dev_id;
2008
2009         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2010
2011         iob = qeth_wait_for_buffer(&card->write);
2012         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2013
2014         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2015                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2016         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2017                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2018         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2019                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2020
2021         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2022         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2023         temp = (card->info.cula << 8) + card->info.unit_addr2;
2024         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2025         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2026                                     qeth_ulp_setup_cb, NULL);
2027         return rc;
2028 }
2029
2030 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2031 {
2032         int i, j;
2033
2034         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2035
2036         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2037                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2038                 return 0;
2039
2040         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2041                                   GFP_KERNEL);
2042         if (!card->qdio.in_q)
2043                 goto out_nomem;
2044         QETH_DBF_TEXT(SETUP, 2, "inq");
2045         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2046         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2047         /* give inbound qeth_qdio_buffers their qdio_buffers */
2048         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2049                 card->qdio.in_q->bufs[i].buffer =
2050                         &card->qdio.in_q->qdio_bufs[i];
2051         /* inbound buffer pool */
2052         if (qeth_alloc_buffer_pool(card))
2053                 goto out_freeinq;
2054         /* outbound */
2055         card->qdio.out_qs =
2056                 kmalloc(card->qdio.no_out_queues *
2057                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2058         if (!card->qdio.out_qs)
2059                 goto out_freepool;
2060         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2061                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2062                                                GFP_KERNEL);
2063                 if (!card->qdio.out_qs[i])
2064                         goto out_freeoutq;
2065                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2066                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2067                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2068                 card->qdio.out_qs[i]->queue_no = i;
2069                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2070                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2071                         card->qdio.out_qs[i]->bufs[j].buffer =
2072                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2073                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2074                                             skb_list);
2075                         lockdep_set_class(
2076                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2077                                 &qdio_out_skb_queue_key);
2078                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2079                 }
2080         }
2081         return 0;
2082
2083 out_freeoutq:
2084         while (i > 0)
2085                 kfree(card->qdio.out_qs[--i]);
2086         kfree(card->qdio.out_qs);
2087         card->qdio.out_qs = NULL;
2088 out_freepool:
2089         qeth_free_buffer_pool(card);
2090 out_freeinq:
2091         kfree(card->qdio.in_q);
2092         card->qdio.in_q = NULL;
2093 out_nomem:
2094         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2095         return -ENOMEM;
2096 }
2097
2098 static void qeth_create_qib_param_field(struct qeth_card *card,
2099                 char *param_field)
2100 {
2101
2102         param_field[0] = _ascebc['P'];
2103         param_field[1] = _ascebc['C'];
2104         param_field[2] = _ascebc['I'];
2105         param_field[3] = _ascebc['T'];
2106         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2107         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2108         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2109 }
2110
2111 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2112                 char *param_field)
2113 {
2114         param_field[16] = _ascebc['B'];
2115         param_field[17] = _ascebc['L'];
2116         param_field[18] = _ascebc['K'];
2117         param_field[19] = _ascebc['T'];
2118         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2119         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2120         *((unsigned int *) (&param_field[28])) =
2121                 card->info.blkt.inter_packet_jumbo;
2122 }
2123
2124 static int qeth_qdio_activate(struct qeth_card *card)
2125 {
2126         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2127         return qdio_activate(CARD_DDEV(card));
2128 }
2129
2130 static int qeth_dm_act(struct qeth_card *card)
2131 {
2132         int rc;
2133         struct qeth_cmd_buffer *iob;
2134
2135         QETH_DBF_TEXT(SETUP, 2, "dmact");
2136
2137         iob = qeth_wait_for_buffer(&card->write);
2138         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2139
2140         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2141                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2142         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2143                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2144         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2145         return rc;
2146 }
2147
2148 static int qeth_mpc_initialize(struct qeth_card *card)
2149 {
2150         int rc;
2151
2152         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2153
2154         rc = qeth_issue_next_read(card);
2155         if (rc) {
2156                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2157                 return rc;
2158         }
2159         rc = qeth_cm_enable(card);
2160         if (rc) {
2161                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2162                 goto out_qdio;
2163         }
2164         rc = qeth_cm_setup(card);
2165         if (rc) {
2166                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2167                 goto out_qdio;
2168         }
2169         rc = qeth_ulp_enable(card);
2170         if (rc) {
2171                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2172                 goto out_qdio;
2173         }
2174         rc = qeth_ulp_setup(card);
2175         if (rc) {
2176                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2177                 goto out_qdio;
2178         }
2179         rc = qeth_alloc_qdio_buffers(card);
2180         if (rc) {
2181                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2182                 goto out_qdio;
2183         }
2184         rc = qeth_qdio_establish(card);
2185         if (rc) {
2186                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2187                 qeth_free_qdio_buffers(card);
2188                 goto out_qdio;
2189         }
2190         rc = qeth_qdio_activate(card);
2191         if (rc) {
2192                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2193                 goto out_qdio;
2194         }
2195         rc = qeth_dm_act(card);
2196         if (rc) {
2197                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2198                 goto out_qdio;
2199         }
2200
2201         return 0;
2202 out_qdio:
2203         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2204         return rc;
2205 }
2206
2207 static void qeth_print_status_with_portname(struct qeth_card *card)
2208 {
2209         char dbf_text[15];
2210         int i;
2211
2212         sprintf(dbf_text, "%s", card->info.portname + 1);
2213         for (i = 0; i < 8; i++)
2214                 dbf_text[i] =
2215                         (char) _ebcasc[(__u8) dbf_text[i]];
2216         dbf_text[8] = 0;
2217         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2218                "with link type %s (portname: %s)\n",
2219                qeth_get_cardname(card),
2220                (card->info.mcl_level[0]) ? " (level: " : "",
2221                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2222                (card->info.mcl_level[0]) ? ")" : "",
2223                qeth_get_cardname_short(card),
2224                dbf_text);
2225
2226 }
2227
2228 static void qeth_print_status_no_portname(struct qeth_card *card)
2229 {
2230         if (card->info.portname[0])
2231                 dev_info(&card->gdev->dev, "Device is a%s "
2232                        "card%s%s%s\nwith link type %s "
2233                        "(no portname needed by interface).\n",
2234                        qeth_get_cardname(card),
2235                        (card->info.mcl_level[0]) ? " (level: " : "",
2236                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2237                        (card->info.mcl_level[0]) ? ")" : "",
2238                        qeth_get_cardname_short(card));
2239         else
2240                 dev_info(&card->gdev->dev, "Device is a%s "
2241                        "card%s%s%s\nwith link type %s.\n",
2242                        qeth_get_cardname(card),
2243                        (card->info.mcl_level[0]) ? " (level: " : "",
2244                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2245                        (card->info.mcl_level[0]) ? ")" : "",
2246                        qeth_get_cardname_short(card));
2247 }
2248
2249 void qeth_print_status_message(struct qeth_card *card)
2250 {
2251         switch (card->info.type) {
2252         case QETH_CARD_TYPE_OSD:
2253         case QETH_CARD_TYPE_OSM:
2254         case QETH_CARD_TYPE_OSX:
2255                 /* VM will use a non-zero first character
2256                  * to indicate a HiperSockets like reporting
2257                  * of the level OSA sets the first character to zero
2258                  * */
2259                 if (!card->info.mcl_level[0]) {
2260                         sprintf(card->info.mcl_level, "%02x%02x",
2261                                 card->info.mcl_level[2],
2262                                 card->info.mcl_level[3]);
2263
2264                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2265                         break;
2266                 }
2267                 /* fallthrough */
2268         case QETH_CARD_TYPE_IQD:
2269                 if ((card->info.guestlan) ||
2270                     (card->info.mcl_level[0] & 0x80)) {
2271                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2272                                 card->info.mcl_level[0]];
2273                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2274                                 card->info.mcl_level[1]];
2275                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2276                                 card->info.mcl_level[2]];
2277                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2278                                 card->info.mcl_level[3]];
2279                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2280                 }
2281                 break;
2282         default:
2283                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2284         }
2285         if (card->info.portname_required)
2286                 qeth_print_status_with_portname(card);
2287         else
2288                 qeth_print_status_no_portname(card);
2289 }
2290 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2291
2292 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2293 {
2294         struct qeth_buffer_pool_entry *entry;
2295
2296         QETH_CARD_TEXT(card, 5, "inwrklst");
2297
2298         list_for_each_entry(entry,
2299                             &card->qdio.init_pool.entry_list, init_list) {
2300                 qeth_put_buffer_pool_entry(card, entry);
2301         }
2302 }
2303
2304 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2305                 struct qeth_card *card)
2306 {
2307         struct list_head *plh;
2308         struct qeth_buffer_pool_entry *entry;
2309         int i, free;
2310         struct page *page;
2311
2312         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2313                 return NULL;
2314
2315         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2316                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2317                 free = 1;
2318                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2319                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2320                                 free = 0;
2321                                 break;
2322                         }
2323                 }
2324                 if (free) {
2325                         list_del_init(&entry->list);
2326                         return entry;
2327                 }
2328         }
2329
2330         /* no free buffer in pool so take first one and swap pages */
2331         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2332                         struct qeth_buffer_pool_entry, list);
2333         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2334                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2335                         page = alloc_page(GFP_ATOMIC);
2336                         if (!page) {
2337                                 return NULL;
2338                         } else {
2339                                 free_page((unsigned long)entry->elements[i]);
2340                                 entry->elements[i] = page_address(page);
2341                                 if (card->options.performance_stats)
2342                                         card->perf_stats.sg_alloc_page_rx++;
2343                         }
2344                 }
2345         }
2346         list_del_init(&entry->list);
2347         return entry;
2348 }
2349
2350 static int qeth_init_input_buffer(struct qeth_card *card,
2351                 struct qeth_qdio_buffer *buf)
2352 {
2353         struct qeth_buffer_pool_entry *pool_entry;
2354         int i;
2355
2356         pool_entry = qeth_find_free_buffer_pool_entry(card);
2357         if (!pool_entry)
2358                 return 1;
2359
2360         /*
2361          * since the buffer is accessed only from the input_tasklet
2362          * there shouldn't be a need to synchronize; also, since we use
2363          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2364          * buffers
2365          */
2366
2367         buf->pool_entry = pool_entry;
2368         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2369                 buf->buffer->element[i].length = PAGE_SIZE;
2370                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2371                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2372                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2373                 else
2374                         buf->buffer->element[i].eflags = 0;
2375                 buf->buffer->element[i].sflags = 0;
2376         }
2377         return 0;
2378 }
2379
2380 int qeth_init_qdio_queues(struct qeth_card *card)
2381 {
2382         int i, j;
2383         int rc;
2384
2385         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2386
2387         /* inbound queue */
2388         memset(card->qdio.in_q->qdio_bufs, 0,
2389                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2390         qeth_initialize_working_pool_list(card);
2391         /*give only as many buffers to hardware as we have buffer pool entries*/
2392         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2393                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2394         card->qdio.in_q->next_buf_to_init =
2395                 card->qdio.in_buf_pool.buf_count - 1;
2396         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2397                      card->qdio.in_buf_pool.buf_count - 1);
2398         if (rc) {
2399                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2400                 return rc;
2401         }
2402         /* outbound queue */
2403         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2404                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2405                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2406                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2407                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2408                                         &card->qdio.out_qs[i]->bufs[j]);
2409                 }
2410                 card->qdio.out_qs[i]->card = card;
2411                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2412                 card->qdio.out_qs[i]->do_pack = 0;
2413                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2414                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2415                 atomic_set(&card->qdio.out_qs[i]->state,
2416                            QETH_OUT_Q_UNLOCKED);
2417         }
2418         return 0;
2419 }
2420 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2421
2422 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2423 {
2424         switch (link_type) {
2425         case QETH_LINK_TYPE_HSTR:
2426                 return 2;
2427         default:
2428                 return 1;
2429         }
2430 }
2431
2432 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2433                 struct qeth_ipa_cmd *cmd, __u8 command,
2434                 enum qeth_prot_versions prot)
2435 {
2436         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2437         cmd->hdr.command = command;
2438         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2439         cmd->hdr.seqno = card->seqno.ipa;
2440         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2441         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2442         if (card->options.layer2)
2443                 cmd->hdr.prim_version_no = 2;
2444         else
2445                 cmd->hdr.prim_version_no = 1;
2446         cmd->hdr.param_count = 1;
2447         cmd->hdr.prot_version = prot;
2448         cmd->hdr.ipa_supported = 0;
2449         cmd->hdr.ipa_enabled = 0;
2450 }
2451
2452 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2453                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2454 {
2455         struct qeth_cmd_buffer *iob;
2456         struct qeth_ipa_cmd *cmd;
2457
2458         iob = qeth_wait_for_buffer(&card->write);
2459         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2460         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2461
2462         return iob;
2463 }
2464 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2465
2466 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2467                 char prot_type)
2468 {
2469         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2470         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2471         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2472                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2473 }
2474 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2475
2476 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2477                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2478                         unsigned long),
2479                 void *reply_param)
2480 {
2481         int rc;
2482         char prot_type;
2483
2484         QETH_CARD_TEXT(card, 4, "sendipa");
2485
2486         if (card->options.layer2)
2487                 if (card->info.type == QETH_CARD_TYPE_OSN)
2488                         prot_type = QETH_PROT_OSN2;
2489                 else
2490                         prot_type = QETH_PROT_LAYER2;
2491         else
2492                 prot_type = QETH_PROT_TCPIP;
2493         qeth_prepare_ipa_cmd(card, iob, prot_type);
2494         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2495                                                 iob, reply_cb, reply_param);
2496         if (rc == -ETIME) {
2497                 qeth_clear_ipacmd_list(card);
2498                 qeth_schedule_recovery(card);
2499         }
2500         return rc;
2501 }
2502 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2503
2504 int qeth_send_startlan(struct qeth_card *card)
2505 {
2506         int rc;
2507         struct qeth_cmd_buffer *iob;
2508
2509         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2510
2511         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2512         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2513         return rc;
2514 }
2515 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2516
2517 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2518                 struct qeth_reply *reply, unsigned long data)
2519 {
2520         struct qeth_ipa_cmd *cmd;
2521
2522         QETH_CARD_TEXT(card, 4, "defadpcb");
2523
2524         cmd = (struct qeth_ipa_cmd *) data;
2525         if (cmd->hdr.return_code == 0)
2526                 cmd->hdr.return_code =
2527                         cmd->data.setadapterparms.hdr.return_code;
2528         return 0;
2529 }
2530 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2531
2532 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2533                 struct qeth_reply *reply, unsigned long data)
2534 {
2535         struct qeth_ipa_cmd *cmd;
2536
2537         QETH_CARD_TEXT(card, 3, "quyadpcb");
2538
2539         cmd = (struct qeth_ipa_cmd *) data;
2540         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2541                 card->info.link_type =
2542                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2543                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2544         }
2545         card->options.adp.supported_funcs =
2546                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2547         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2548 }
2549
2550 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2551                 __u32 command, __u32 cmdlen)
2552 {
2553         struct qeth_cmd_buffer *iob;
2554         struct qeth_ipa_cmd *cmd;
2555
2556         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2557                                      QETH_PROT_IPV4);
2558         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2559         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2560         cmd->data.setadapterparms.hdr.command_code = command;
2561         cmd->data.setadapterparms.hdr.used_total = 1;
2562         cmd->data.setadapterparms.hdr.seq_no = 1;
2563
2564         return iob;
2565 }
2566 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2567
2568 int qeth_query_setadapterparms(struct qeth_card *card)
2569 {
2570         int rc;
2571         struct qeth_cmd_buffer *iob;
2572
2573         QETH_CARD_TEXT(card, 3, "queryadp");
2574         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2575                                    sizeof(struct qeth_ipacmd_setadpparms));
2576         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2577         return rc;
2578 }
2579 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2580
2581 static int qeth_query_ipassists_cb(struct qeth_card *card,
2582                 struct qeth_reply *reply, unsigned long data)
2583 {
2584         struct qeth_ipa_cmd *cmd;
2585
2586         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2587
2588         cmd = (struct qeth_ipa_cmd *) data;
2589         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2590                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2591                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2592         } else {
2593                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2594                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2595         }
2596         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2597         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
2598         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
2599         return 0;
2600 }
2601
2602 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2603 {
2604         int rc;
2605         struct qeth_cmd_buffer *iob;
2606
2607         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2608         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2609         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2610         return rc;
2611 }
2612 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2613
2614 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2615                 struct qeth_reply *reply, unsigned long data)
2616 {
2617         struct qeth_ipa_cmd *cmd;
2618         __u16 rc;
2619
2620         cmd = (struct qeth_ipa_cmd *)data;
2621         rc = cmd->hdr.return_code;
2622         if (rc)
2623                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2624         else
2625                 card->info.diagass_support = cmd->data.diagass.ext;
2626         return 0;
2627 }
2628
2629 static int qeth_query_setdiagass(struct qeth_card *card)
2630 {
2631         struct qeth_cmd_buffer *iob;
2632         struct qeth_ipa_cmd    *cmd;
2633
2634         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2635         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2636         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2637         cmd->data.diagass.subcmd_len = 16;
2638         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2639         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2640 }
2641
2642 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2643 {
2644         unsigned long info = get_zeroed_page(GFP_KERNEL);
2645         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2646         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2647         struct ccw_dev_id ccwid;
2648         int level, rc;
2649
2650         tid->chpid = card->info.chpid;
2651         ccw_device_get_id(CARD_RDEV(card), &ccwid);
2652         tid->ssid = ccwid.ssid;
2653         tid->devno = ccwid.devno;
2654         if (!info)
2655                 return;
2656
2657         rc = stsi(NULL, 0, 0, 0);
2658         if (rc == -ENOSYS)
2659                 level = rc;
2660         else
2661                 level = (((unsigned int) rc) >> 28);
2662
2663         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
2664                 tid->lparnr = info222->lpar_number;
2665
2666         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
2667                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2668                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2669         }
2670         free_page(info);
2671         return;
2672 }
2673
2674 static int qeth_hw_trap_cb(struct qeth_card *card,
2675                 struct qeth_reply *reply, unsigned long data)
2676 {
2677         struct qeth_ipa_cmd *cmd;
2678         __u16 rc;
2679
2680         cmd = (struct qeth_ipa_cmd *)data;
2681         rc = cmd->hdr.return_code;
2682         if (rc)
2683                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2684         return 0;
2685 }
2686
2687 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2688 {
2689         struct qeth_cmd_buffer *iob;
2690         struct qeth_ipa_cmd *cmd;
2691
2692         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
2693         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2694         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2695         cmd->data.diagass.subcmd_len = 80;
2696         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
2697         cmd->data.diagass.type = 1;
2698         cmd->data.diagass.action = action;
2699         switch (action) {
2700         case QETH_DIAGS_TRAP_ARM:
2701                 cmd->data.diagass.options = 0x0003;
2702                 cmd->data.diagass.ext = 0x00010000 +
2703                         sizeof(struct qeth_trap_id);
2704                 qeth_get_trap_id(card,
2705                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
2706                 break;
2707         case QETH_DIAGS_TRAP_DISARM:
2708                 cmd->data.diagass.options = 0x0001;
2709                 break;
2710         case QETH_DIAGS_TRAP_CAPTURE:
2711                 break;
2712         }
2713         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
2714 }
2715 EXPORT_SYMBOL_GPL(qeth_hw_trap);
2716
2717 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2718                 unsigned int qdio_error, const char *dbftext)
2719 {
2720         if (qdio_error) {
2721                 QETH_CARD_TEXT(card, 2, dbftext);
2722                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2723                                buf->element[15].sflags);
2724                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2725                                buf->element[14].sflags);
2726                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2727                 if ((buf->element[15].sflags) == 0x12) {
2728                         card->stats.rx_dropped++;
2729                         return 0;
2730                 } else
2731                         return 1;
2732         }
2733         return 0;
2734 }
2735 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2736
2737 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2738 {
2739         struct qeth_qdio_q *queue = card->qdio.in_q;
2740         int count;
2741         int i;
2742         int rc;
2743         int newcount = 0;
2744
2745         count = (index < queue->next_buf_to_init)?
2746                 card->qdio.in_buf_pool.buf_count -
2747                 (queue->next_buf_to_init - index) :
2748                 card->qdio.in_buf_pool.buf_count -
2749                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2750         /* only requeue at a certain threshold to avoid SIGAs */
2751         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2752                 for (i = queue->next_buf_to_init;
2753                      i < queue->next_buf_to_init + count; ++i) {
2754                         if (qeth_init_input_buffer(card,
2755                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2756                                 break;
2757                         } else {
2758                                 newcount++;
2759                         }
2760                 }
2761
2762                 if (newcount < count) {
2763                         /* we are in memory shortage so we switch back to
2764                            traditional skb allocation and drop packages */
2765                         atomic_set(&card->force_alloc_skb, 3);
2766                         count = newcount;
2767                 } else {
2768                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2769                 }
2770
2771                 /*
2772                  * according to old code it should be avoided to requeue all
2773                  * 128 buffers in order to benefit from PCI avoidance.
2774                  * this function keeps at least one buffer (the buffer at
2775                  * 'index') un-requeued -> this buffer is the first buffer that
2776                  * will be requeued the next time
2777                  */
2778                 if (card->options.performance_stats) {
2779                         card->perf_stats.inbound_do_qdio_cnt++;
2780                         card->perf_stats.inbound_do_qdio_start_time =
2781                                 qeth_get_micros();
2782                 }
2783                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2784                              queue->next_buf_to_init, count);
2785                 if (card->options.performance_stats)
2786                         card->perf_stats.inbound_do_qdio_time +=
2787                                 qeth_get_micros() -
2788                                 card->perf_stats.inbound_do_qdio_start_time;
2789                 if (rc) {
2790                         dev_warn(&card->gdev->dev,
2791                                 "QDIO reported an error, rc=%i\n", rc);
2792                         QETH_CARD_TEXT(card, 2, "qinberr");
2793                 }
2794                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2795                                           QDIO_MAX_BUFFERS_PER_Q;
2796         }
2797 }
2798 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2799
2800 static int qeth_handle_send_error(struct qeth_card *card,
2801                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2802 {
2803         int sbalf15 = buffer->buffer->element[15].sflags;
2804
2805         QETH_CARD_TEXT(card, 6, "hdsnderr");
2806         if (card->info.type == QETH_CARD_TYPE_IQD) {
2807                 if (sbalf15 == 0) {
2808                         qdio_err = 0;
2809                 } else {
2810                         qdio_err = 1;
2811                 }
2812         }
2813         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2814
2815         if (!qdio_err)
2816                 return QETH_SEND_ERROR_NONE;
2817
2818         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2819                 return QETH_SEND_ERROR_RETRY;
2820
2821         QETH_CARD_TEXT(card, 1, "lnkfail");
2822         QETH_CARD_TEXT_(card, 1, "%04x %02x",
2823                        (u16)qdio_err, (u8)sbalf15);
2824         return QETH_SEND_ERROR_LINK_FAILURE;
2825 }
2826
2827 /*
2828  * Switched to packing state if the number of used buffers on a queue
2829  * reaches a certain limit.
2830  */
2831 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2832 {
2833         if (!queue->do_pack) {
2834                 if (atomic_read(&queue->used_buffers)
2835                     >= QETH_HIGH_WATERMARK_PACK){
2836                         /* switch non-PACKING -> PACKING */
2837                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
2838                         if (queue->card->options.performance_stats)
2839                                 queue->card->perf_stats.sc_dp_p++;
2840                         queue->do_pack = 1;
2841                 }
2842         }
2843 }
2844
2845 /*
2846  * Switches from packing to non-packing mode. If there is a packing
2847  * buffer on the queue this buffer will be prepared to be flushed.
2848  * In that case 1 is returned to inform the caller. If no buffer
2849  * has to be flushed, zero is returned.
2850  */
2851 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2852 {
2853         struct qeth_qdio_out_buffer *buffer;
2854         int flush_count = 0;
2855
2856         if (queue->do_pack) {
2857                 if (atomic_read(&queue->used_buffers)
2858                     <= QETH_LOW_WATERMARK_PACK) {
2859                         /* switch PACKING -> non-PACKING */
2860                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
2861                         if (queue->card->options.performance_stats)
2862                                 queue->card->perf_stats.sc_p_dp++;
2863                         queue->do_pack = 0;
2864                         /* flush packing buffers */
2865                         buffer = &queue->bufs[queue->next_buf_to_fill];
2866                         if ((atomic_read(&buffer->state) ==
2867                                                 QETH_QDIO_BUF_EMPTY) &&
2868                             (buffer->next_element_to_fill > 0)) {
2869                                 atomic_set(&buffer->state,
2870                                                 QETH_QDIO_BUF_PRIMED);
2871                                 flush_count++;
2872                                 queue->next_buf_to_fill =
2873                                         (queue->next_buf_to_fill + 1) %
2874                                         QDIO_MAX_BUFFERS_PER_Q;
2875                         }
2876                 }
2877         }
2878         return flush_count;
2879 }
2880
2881 /*
2882  * Called to flush a packing buffer if no more pci flags are on the queue.
2883  * Checks if there is a packing buffer and prepares it to be flushed.
2884  * In that case returns 1, otherwise zero.
2885  */
2886 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2887 {
2888         struct qeth_qdio_out_buffer *buffer;
2889
2890         buffer = &queue->bufs[queue->next_buf_to_fill];
2891         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2892            (buffer->next_element_to_fill > 0)) {
2893                 /* it's a packing buffer */
2894                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2895                 queue->next_buf_to_fill =
2896                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2897                 return 1;
2898         }
2899         return 0;
2900 }
2901
2902 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2903                                int count)
2904 {
2905         struct qeth_qdio_out_buffer *buf;
2906         int rc;
2907         int i;
2908         unsigned int qdio_flags;
2909
2910         for (i = index; i < index + count; ++i) {
2911                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2912                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
2913                                 SBAL_EFLAGS_LAST_ENTRY;
2914
2915                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2916                         continue;
2917
2918                 if (!queue->do_pack) {
2919                         if ((atomic_read(&queue->used_buffers) >=
2920                                 (QETH_HIGH_WATERMARK_PACK -
2921                                  QETH_WATERMARK_PACK_FUZZ)) &&
2922                             !atomic_read(&queue->set_pci_flags_count)) {
2923                                 /* it's likely that we'll go to packing
2924                                  * mode soon */
2925                                 atomic_inc(&queue->set_pci_flags_count);
2926                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
2927                         }
2928                 } else {
2929                         if (!atomic_read(&queue->set_pci_flags_count)) {
2930                                 /*
2931                                  * there's no outstanding PCI any more, so we
2932                                  * have to request a PCI to be sure the the PCI
2933                                  * will wake at some time in the future then we
2934                                  * can flush packed buffers that might still be
2935                                  * hanging around, which can happen if no
2936                                  * further send was requested by the stack
2937                                  */
2938                                 atomic_inc(&queue->set_pci_flags_count);
2939                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
2940                         }
2941                 }
2942         }
2943
2944         queue->card->dev->trans_start = jiffies;
2945         if (queue->card->options.performance_stats) {
2946                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2947                 queue->card->perf_stats.outbound_do_qdio_start_time =
2948                         qeth_get_micros();
2949         }
2950         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2951         if (atomic_read(&queue->set_pci_flags_count))
2952                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2953         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2954                      queue->queue_no, index, count);
2955         if (queue->card->options.performance_stats)
2956                 queue->card->perf_stats.outbound_do_qdio_time +=
2957                         qeth_get_micros() -
2958                         queue->card->perf_stats.outbound_do_qdio_start_time;
2959         atomic_add(count, &queue->used_buffers);
2960         if (rc) {
2961                 queue->card->stats.tx_errors += count;
2962                 /* ignore temporary SIGA errors without busy condition */
2963                 if (rc == QDIO_ERROR_SIGA_TARGET)
2964                         return;
2965                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2966                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2967
2968                 /* this must not happen under normal circumstances. if it
2969                  * happens something is really wrong -> recover */
2970                 qeth_schedule_recovery(queue->card);
2971                 return;
2972         }
2973         if (queue->card->options.performance_stats)
2974                 queue->card->perf_stats.bufs_sent += count;
2975 }
2976
2977 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2978 {
2979         int index;
2980         int flush_cnt = 0;
2981         int q_was_packing = 0;
2982
2983         /*
2984          * check if weed have to switch to non-packing mode or if
2985          * we have to get a pci flag out on the queue
2986          */
2987         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2988             !atomic_read(&queue->set_pci_flags_count)) {
2989                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2990                                 QETH_OUT_Q_UNLOCKED) {
2991                         /*
2992                          * If we get in here, there was no action in
2993                          * do_send_packet. So, we check if there is a
2994                          * packing buffer to be flushed here.
2995                          */
2996                         netif_stop_queue(queue->card->dev);
2997                         index = queue->next_buf_to_fill;
2998                         q_was_packing = queue->do_pack;
2999                         /* queue->do_pack may change */
3000                         barrier();
3001                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3002                         if (!flush_cnt &&
3003                             !atomic_read(&queue->set_pci_flags_count))
3004                                 flush_cnt +=
3005                                         qeth_flush_buffers_on_no_pci(queue);
3006                         if (queue->card->options.performance_stats &&
3007                             q_was_packing)
3008                                 queue->card->perf_stats.bufs_sent_pack +=
3009                                         flush_cnt;
3010                         if (flush_cnt)
3011                                 qeth_flush_buffers(queue, index, flush_cnt);
3012                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3013                 }
3014         }
3015 }
3016
3017 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3018                 unsigned long card_ptr)
3019 {
3020         struct qeth_card *card = (struct qeth_card *)card_ptr;
3021
3022         if (card->dev && (card->dev->flags & IFF_UP))
3023                 napi_schedule(&card->napi);
3024 }
3025 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3026
3027 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3028                 unsigned int queue, int first_element, int count,
3029                 unsigned long card_ptr)
3030 {
3031         struct qeth_card *card = (struct qeth_card *)card_ptr;
3032
3033         if (qdio_err)
3034                 qeth_schedule_recovery(card);
3035 }
3036 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3037
3038 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3039                 unsigned int qdio_error, int __queue, int first_element,
3040                 int count, unsigned long card_ptr)
3041 {
3042         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3043         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3044         struct qeth_qdio_out_buffer *buffer;
3045         int i;
3046
3047         QETH_CARD_TEXT(card, 6, "qdouhdl");
3048         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3049                 QETH_CARD_TEXT(card, 2, "achkcond");
3050                 netif_stop_queue(card->dev);
3051                 qeth_schedule_recovery(card);
3052                 return;
3053         }
3054         if (card->options.performance_stats) {
3055                 card->perf_stats.outbound_handler_cnt++;
3056                 card->perf_stats.outbound_handler_start_time =
3057                         qeth_get_micros();
3058         }
3059         for (i = first_element; i < (first_element + count); ++i) {
3060                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
3061                 qeth_handle_send_error(card, buffer, qdio_error);
3062                 qeth_clear_output_buffer(queue, buffer);
3063         }
3064         atomic_sub(count, &queue->used_buffers);
3065         /* check if we need to do something on this outbound queue */
3066         if (card->info.type != QETH_CARD_TYPE_IQD)
3067                 qeth_check_outbound_queue(queue);
3068
3069         netif_wake_queue(queue->card->dev);
3070         if (card->options.performance_stats)
3071                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3072                         card->perf_stats.outbound_handler_start_time;
3073 }
3074 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3075
3076 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3077                         int ipv, int cast_type)
3078 {
3079         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3080                      card->info.type == QETH_CARD_TYPE_OSX))
3081                 return card->qdio.default_out_queue;
3082         switch (card->qdio.no_out_queues) {
3083         case 4:
3084                 if (cast_type && card->info.is_multicast_different)
3085                         return card->info.is_multicast_different &
3086                                 (card->qdio.no_out_queues - 1);
3087                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3088                         const u8 tos = ip_hdr(skb)->tos;
3089
3090                         if (card->qdio.do_prio_queueing ==
3091                                 QETH_PRIO_Q_ING_TOS) {
3092                                 if (tos & IP_TOS_NOTIMPORTANT)
3093                                         return 3;
3094                                 if (tos & IP_TOS_HIGHRELIABILITY)
3095                                         return 2;
3096                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3097                                         return 1;
3098                                 if (tos & IP_TOS_LOWDELAY)
3099                                         return 0;
3100                         }
3101                         if (card->qdio.do_prio_queueing ==
3102                                 QETH_PRIO_Q_ING_PREC)
3103                                 return 3 - (tos >> 6);
3104                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3105                         /* TODO: IPv6!!! */
3106                 }
3107                 return card->qdio.default_out_queue;
3108         case 1: /* fallthrough for single-out-queue 1920-device */
3109         default:
3110                 return card->qdio.default_out_queue;
3111         }
3112 }
3113 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3114
3115 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3116                      struct sk_buff *skb, int elems)
3117 {
3118         int dlen = skb->len - skb->data_len;
3119         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3120                 PFN_DOWN((unsigned long)skb->data);
3121
3122         elements_needed += skb_shinfo(skb)->nr_frags;
3123         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3124                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3125                         "(Number=%d / Length=%d). Discarded.\n",
3126                         (elements_needed+elems), skb->len);
3127                 return 0;
3128         }
3129         return elements_needed;
3130 }
3131 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3132
3133 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3134 {
3135         int hroom, inpage, rest;
3136
3137         if (((unsigned long)skb->data & PAGE_MASK) !=
3138             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3139                 hroom = skb_headroom(skb);
3140                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3141                 rest = len - inpage;
3142                 if (rest > hroom)
3143                         return 1;
3144                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3145                 skb->data -= rest;
3146                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3147         }
3148         return 0;
3149 }
3150 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3151
3152 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3153         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3154         int offset)
3155 {
3156         int length = skb->len - skb->data_len;
3157         int length_here;
3158         int element;
3159         char *data;
3160         int first_lap, cnt;
3161         struct skb_frag_struct *frag;
3162
3163         element = *next_element_to_fill;
3164         data = skb->data;
3165         first_lap = (is_tso == 0 ? 1 : 0);
3166
3167         if (offset >= 0) {
3168                 data = skb->data + offset;
3169                 length -= offset;
3170                 first_lap = 0;
3171         }
3172
3173         while (length > 0) {
3174                 /* length_here is the remaining amount of data in this page */
3175                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3176                 if (length < length_here)
3177                         length_here = length;
3178
3179                 buffer->element[element].addr = data;
3180                 buffer->element[element].length = length_here;
3181                 length -= length_here;
3182                 if (!length) {
3183                         if (first_lap)
3184                                 if (skb_shinfo(skb)->nr_frags)
3185                                         buffer->element[element].eflags =
3186                                                 SBAL_EFLAGS_FIRST_FRAG;
3187                                 else
3188                                         buffer->element[element].eflags = 0;
3189                         else
3190                                 buffer->element[element].eflags =
3191                                     SBAL_EFLAGS_MIDDLE_FRAG;
3192                 } else {
3193                         if (first_lap)
3194                                 buffer->element[element].eflags =
3195                                     SBAL_EFLAGS_FIRST_FRAG;
3196                         else
3197                                 buffer->element[element].eflags =
3198                                     SBAL_EFLAGS_MIDDLE_FRAG;
3199                 }
3200                 data += length_here;
3201                 element++;
3202                 first_lap = 0;
3203         }
3204
3205         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3206                 frag = &skb_shinfo(skb)->frags[cnt];
3207                 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3208                         + frag->page_offset;
3209                 buffer->element[element].length = frag->size;
3210                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3211                 element++;
3212         }
3213
3214         if (buffer->element[element - 1].eflags)
3215                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3216         *next_element_to_fill = element;
3217 }
3218
3219 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3220                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3221                 struct qeth_hdr *hdr, int offset, int hd_len)
3222 {
3223         struct qdio_buffer *buffer;
3224         int flush_cnt = 0, hdr_len, large_send = 0;
3225
3226         buffer = buf->buffer;
3227         atomic_inc(&skb->users);
3228         skb_queue_tail(&buf->skb_list, skb);
3229
3230         /*check first on TSO ....*/
3231         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3232                 int element = buf->next_element_to_fill;
3233
3234                 hdr_len = sizeof(struct qeth_hdr_tso) +
3235                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3236                 /*fill first buffer entry only with header information */
3237                 buffer->element[element].addr = skb->data;
3238                 buffer->element[element].length = hdr_len;
3239                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3240                 buf->next_element_to_fill++;
3241                 skb->data += hdr_len;
3242                 skb->len  -= hdr_len;
3243                 large_send = 1;
3244         }
3245
3246         if (offset >= 0) {
3247                 int element = buf->next_element_to_fill;
3248                 buffer->element[element].addr = hdr;
3249                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3250                                                         hd_len;
3251                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3252                 buf->is_header[element] = 1;
3253                 buf->next_element_to_fill++;
3254         }
3255
3256         __qeth_fill_buffer(skb, buffer, large_send,
3257                 (int *)&buf->next_element_to_fill, offset);
3258
3259         if (!queue->do_pack) {
3260                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3261                 /* set state to PRIMED -> will be flushed */
3262                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3263                 flush_cnt = 1;
3264         } else {
3265                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3266                 if (queue->card->options.performance_stats)
3267                         queue->card->perf_stats.skbs_sent_pack++;
3268                 if (buf->next_element_to_fill >=
3269                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3270                         /*
3271                          * packed buffer if full -> set state PRIMED
3272                          * -> will be flushed
3273                          */
3274                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3275                         flush_cnt = 1;
3276                 }
3277         }
3278         return flush_cnt;
3279 }
3280
3281 int qeth_do_send_packet_fast(struct qeth_card *card,
3282                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3283                 struct qeth_hdr *hdr, int elements_needed,
3284                 int offset, int hd_len)
3285 {
3286         struct qeth_qdio_out_buffer *buffer;
3287         int index;
3288
3289         /* spin until we get the queue ... */
3290         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3291                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3292         /* ... now we've got the queue */
3293         index = queue->next_buf_to_fill;
3294         buffer = &queue->bufs[queue->next_buf_to_fill];
3295         /*
3296          * check if buffer is empty to make sure that we do not 'overtake'
3297          * ourselves and try to fill a buffer that is already primed
3298          */
3299         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3300                 goto out;
3301         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3302                                           QDIO_MAX_BUFFERS_PER_Q;
3303         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3304         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3305         qeth_flush_buffers(queue, index, 1);
3306         return 0;
3307 out:
3308         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3309         return -EBUSY;
3310 }
3311 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3312
3313 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3314                 struct sk_buff *skb, struct qeth_hdr *hdr,
3315                 int elements_needed)
3316 {
3317         struct qeth_qdio_out_buffer *buffer;
3318         int start_index;
3319         int flush_count = 0;
3320         int do_pack = 0;
3321         int tmp;
3322         int rc = 0;
3323
3324         /* spin until we get the queue ... */
3325         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3326                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3327         start_index = queue->next_buf_to_fill;
3328         buffer = &queue->bufs[queue->next_buf_to_fill];
3329         /*
3330          * check if buffer is empty to make sure that we do not 'overtake'
3331          * ourselves and try to fill a buffer that is already primed
3332          */
3333         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3334                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3335                 return -EBUSY;
3336         }
3337         /* check if we need to switch packing state of this queue */
3338         qeth_switch_to_packing_if_needed(queue);
3339         if (queue->do_pack) {
3340                 do_pack = 1;
3341                 /* does packet fit in current buffer? */
3342                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3343                     buffer->next_element_to_fill) < elements_needed) {
3344                         /* ... no -> set state PRIMED */
3345                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3346                         flush_count++;
3347                         queue->next_buf_to_fill =
3348                                 (queue->next_buf_to_fill + 1) %
3349                                 QDIO_MAX_BUFFERS_PER_Q;
3350                         buffer = &queue->bufs[queue->next_buf_to_fill];
3351                         /* we did a step forward, so check buffer state
3352                          * again */
3353                         if (atomic_read(&buffer->state) !=
3354                             QETH_QDIO_BUF_EMPTY) {
3355                                 qeth_flush_buffers(queue, start_index,
3356                                                            flush_count);
3357                                 atomic_set(&queue->state,
3358                                                 QETH_OUT_Q_UNLOCKED);
3359                                 return -EBUSY;
3360                         }
3361                 }
3362         }
3363         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3364         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3365                                   QDIO_MAX_BUFFERS_PER_Q;
3366         flush_count += tmp;
3367         if (flush_count)
3368                 qeth_flush_buffers(queue, start_index, flush_count);
3369         else if (!atomic_read(&queue->set_pci_flags_count))
3370                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3371         /*
3372          * queue->state will go from LOCKED -> UNLOCKED or from
3373          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3374          * (switch packing state or flush buffer to get another pci flag out).
3375          * In that case we will enter this loop
3376          */
3377         while (atomic_dec_return(&queue->state)) {
3378                 flush_count = 0;
3379                 start_index = queue->next_buf_to_fill;
3380                 /* check if we can go back to non-packing state */
3381                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3382                 /*
3383                  * check if we need to flush a packing buffer to get a pci
3384                  * flag out on the queue
3385                  */
3386                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3387                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3388                 if (flush_count)
3389                         qeth_flush_buffers(queue, start_index, flush_count);
3390         }
3391         /* at this point the queue is UNLOCKED again */
3392         if (queue->card->options.performance_stats && do_pack)
3393                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3394
3395         return rc;
3396 }
3397 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3398
3399 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3400                 struct qeth_reply *reply, unsigned long data)
3401 {
3402         struct qeth_ipa_cmd *cmd;
3403         struct qeth_ipacmd_setadpparms *setparms;
3404
3405         QETH_CARD_TEXT(card, 4, "prmadpcb");
3406
3407         cmd = (struct qeth_ipa_cmd *) data;
3408         setparms = &(cmd->data.setadapterparms);
3409
3410         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3411         if (cmd->hdr.return_code) {
3412                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3413                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3414         }
3415         card->info.promisc_mode = setparms->data.mode;
3416         return 0;
3417 }
3418
3419 void qeth_setadp_promisc_mode(struct qeth_card *card)
3420 {
3421         enum qeth_ipa_promisc_modes mode;
3422         struct net_device *dev = card->dev;
3423         struct qeth_cmd_buffer *iob;
3424         struct qeth_ipa_cmd *cmd;
3425
3426         QETH_CARD_TEXT(card, 4, "setprom");
3427
3428         if (((dev->flags & IFF_PROMISC) &&
3429              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3430             (!(dev->flags & IFF_PROMISC) &&
3431              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3432                 return;
3433         mode = SET_PROMISC_MODE_OFF;
3434         if (dev->flags & IFF_PROMISC)
3435                 mode = SET_PROMISC_MODE_ON;
3436         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3437
3438         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3439                         sizeof(struct qeth_ipacmd_setadpparms));
3440         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3441         cmd->data.setadapterparms.data.mode = mode;
3442         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3443 }
3444 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3445
3446 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3447 {
3448         struct qeth_card *card;
3449         char dbf_text[15];
3450
3451         card = dev->ml_priv;
3452
3453         QETH_CARD_TEXT(card, 4, "chgmtu");
3454         sprintf(dbf_text, "%8x", new_mtu);
3455         QETH_CARD_TEXT(card, 4, dbf_text);
3456
3457         if (new_mtu < 64)
3458                 return -EINVAL;
3459         if (new_mtu > 65535)
3460                 return -EINVAL;
3461         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3462             (!qeth_mtu_is_valid(card, new_mtu)))
3463                 return -EINVAL;
3464         dev->mtu = new_mtu;
3465         return 0;
3466 }
3467 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3468
3469 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3470 {
3471         struct qeth_card *card;
3472
3473         card = dev->ml_priv;
3474
3475         QETH_CARD_TEXT(card, 5, "getstat");
3476
3477         return &card->stats;
3478 }
3479 EXPORT_SYMBOL_GPL(qeth_get_stats);
3480
3481 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3482                 struct qeth_reply *reply, unsigned long data)
3483 {
3484         struct qeth_ipa_cmd *cmd;
3485
3486         QETH_CARD_TEXT(card, 4, "chgmaccb");
3487
3488         cmd = (struct qeth_ipa_cmd *) data;
3489         if (!card->options.layer2 ||
3490             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3491                 memcpy(card->dev->dev_addr,
3492                        &cmd->data.setadapterparms.data.change_addr.addr,
3493                        OSA_ADDR_LEN);
3494                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3495         }
3496         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3497         return 0;
3498 }
3499
3500 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3501 {
3502         int rc;
3503         struct qeth_cmd_buffer *iob;
3504         struct qeth_ipa_cmd *cmd;
3505
3506         QETH_CARD_TEXT(card, 4, "chgmac");
3507
3508         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3509                                    sizeof(struct qeth_ipacmd_setadpparms));
3510         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3511         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3512         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3513         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3514                card->dev->dev_addr, OSA_ADDR_LEN);
3515         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3516                                NULL);
3517         return rc;
3518 }
3519 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3520
3521 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3522                 struct qeth_reply *reply, unsigned long data)
3523 {
3524         struct qeth_ipa_cmd *cmd;
3525         struct qeth_set_access_ctrl *access_ctrl_req;
3526
3527         QETH_CARD_TEXT(card, 4, "setaccb");
3528
3529         cmd = (struct qeth_ipa_cmd *) data;
3530         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3531         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3532         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3533         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3534                 cmd->data.setadapterparms.hdr.return_code);
3535         switch (cmd->data.setadapterparms.hdr.return_code) {
3536         case SET_ACCESS_CTRL_RC_SUCCESS:
3537         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3538         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3539         {
3540                 card->options.isolation = access_ctrl_req->subcmd_code;
3541                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3542                         dev_info(&card->gdev->dev,
3543                             "QDIO data connection isolation is deactivated\n");
3544                 } else {
3545                         dev_info(&card->gdev->dev,
3546                             "QDIO data connection isolation is activated\n");
3547                 }
3548                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3549                         card->gdev->dev.kobj.name,
3550                         access_ctrl_req->subcmd_code,
3551                         cmd->data.setadapterparms.hdr.return_code);
3552                 break;
3553         }
3554         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3555         {
3556                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3557                         card->gdev->dev.kobj.name,
3558                         access_ctrl_req->subcmd_code,
3559                         cmd->data.setadapterparms.hdr.return_code);
3560                 dev_err(&card->gdev->dev, "Adapter does not "
3561                         "support QDIO data connection isolation\n");
3562
3563                 /* ensure isolation mode is "none" */
3564                 card->options.isolation = ISOLATION_MODE_NONE;
3565                 break;
3566         }
3567         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3568         {
3569                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3570                         card->gdev->dev.kobj.name,
3571                         access_ctrl_req->subcmd_code,
3572                         cmd->data.setadapterparms.hdr.return_code);
3573                 dev_err(&card->gdev->dev,
3574                         "Adapter is dedicated. "
3575                         "QDIO data connection isolation not supported\n");
3576
3577                 /* ensure isolation mode is "none" */
3578                 card->options.isolation = ISOLATION_MODE_NONE;
3579                 break;
3580         }
3581         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3582         {
3583                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3584                         card->gdev->dev.kobj.name,
3585                         access_ctrl_req->subcmd_code,
3586                         cmd->data.setadapterparms.hdr.return_code);
3587                 dev_err(&card->gdev->dev,
3588                         "TSO does not permit QDIO data connection isolation\n");
3589
3590                 /* ensure isolation mode is "none" */
3591                 card->options.isolation = ISOLATION_MODE_NONE;
3592                 break;
3593         }
3594         default:
3595         {
3596                 /* this should never happen */
3597                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3598                         "==UNKNOWN\n",
3599                         card->gdev->dev.kobj.name,
3600                         access_ctrl_req->subcmd_code,
3601                         cmd->data.setadapterparms.hdr.return_code);
3602
3603                 /* ensure isolation mode is "none" */
3604                 card->options.isolation = ISOLATION_MODE_NONE;
3605                 break;
3606         }
3607         }
3608         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3609         return 0;
3610 }
3611
3612 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3613                 enum qeth_ipa_isolation_modes isolation)
3614 {
3615         int rc;
3616         struct qeth_cmd_buffer *iob;
3617         struct qeth_ipa_cmd *cmd;
3618         struct qeth_set_access_ctrl *access_ctrl_req;
3619
3620         QETH_CARD_TEXT(card, 4, "setacctl");
3621
3622         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3623         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3624
3625         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3626                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3627                                    sizeof(struct qeth_set_access_ctrl));
3628         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3629         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3630         access_ctrl_req->subcmd_code = isolation;
3631
3632         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3633                                NULL);
3634         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3635         return rc;
3636 }
3637
3638 int qeth_set_access_ctrl_online(struct qeth_card *card)
3639 {
3640         int rc = 0;
3641
3642         QETH_CARD_TEXT(card, 4, "setactlo");
3643
3644         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3645              card->info.type == QETH_CARD_TYPE_OSX) &&
3646              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3647                 rc = qeth_setadpparms_set_access_ctrl(card,
3648                         card->options.isolation);
3649                 if (rc) {
3650                         QETH_DBF_MESSAGE(3,
3651                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3652                                 card->gdev->dev.kobj.name,
3653                                 rc);
3654                 }
3655         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3656                 card->options.isolation = ISOLATION_MODE_NONE;
3657
3658                 dev_err(&card->gdev->dev, "Adapter does not "
3659                         "support QDIO data connection isolation\n");
3660                 rc = -EOPNOTSUPP;
3661         }
3662         return rc;
3663 }
3664 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3665
3666 void qeth_tx_timeout(struct net_device *dev)
3667 {
3668         struct qeth_card *card;
3669
3670         card = dev->ml_priv;
3671         QETH_CARD_TEXT(card, 4, "txtimeo");
3672         card->stats.tx_errors++;
3673         qeth_schedule_recovery(card);
3674 }
3675 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3676
3677 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3678 {
3679         struct qeth_card *card = dev->ml_priv;
3680         int rc = 0;
3681
3682         switch (regnum) {
3683         case MII_BMCR: /* Basic mode control register */
3684                 rc = BMCR_FULLDPLX;
3685                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3686                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3687                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3688                         rc |= BMCR_SPEED100;
3689                 break;
3690         case MII_BMSR: /* Basic mode status register */
3691                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3692                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3693                      BMSR_100BASE4;
3694                 break;
3695         case MII_PHYSID1: /* PHYS ID 1 */
3696                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3697                      dev->dev_addr[2];
3698                 rc = (rc >> 5) & 0xFFFF;
3699                 break;
3700         case MII_PHYSID2: /* PHYS ID 2 */
3701                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3702                 break;
3703         case MII_ADVERTISE: /* Advertisement control reg */
3704                 rc = ADVERTISE_ALL;
3705                 break;
3706         case MII_LPA: /* Link partner ability reg */
3707                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3708                      LPA_100BASE4 | LPA_LPACK;
3709                 break;
3710         case MII_EXPANSION: /* Expansion register */
3711                 break;
3712         case MII_DCOUNTER: /* disconnect counter */
3713                 break;
3714         case MII_FCSCOUNTER: /* false carrier counter */
3715                 break;
3716         case MII_NWAYTEST: /* N-way auto-neg test register */
3717                 break;
3718         case MII_RERRCOUNTER: /* rx error counter */
3719                 rc = card->stats.rx_errors;
3720                 break;
3721         case MII_SREVISION: /* silicon revision */
3722                 break;
3723         case MII_RESV1: /* reserved 1 */
3724                 break;
3725         case MII_LBRERROR: /* loopback, rx, bypass error */
3726                 break;
3727         case MII_PHYADDR: /* physical address */
3728                 break;
3729         case MII_RESV2: /* reserved 2 */
3730                 break;
3731         case MII_TPISTATUS: /* TPI status for 10mbps */
3732                 break;
3733         case MII_NCONFIG: /* network interface config */
3734                 break;
3735         default:
3736                 break;
3737         }
3738         return rc;
3739 }
3740 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3741
3742 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3743                 struct qeth_cmd_buffer *iob, int len,
3744                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3745                         unsigned long),
3746                 void *reply_param)
3747 {
3748         u16 s1, s2;
3749
3750         QETH_CARD_TEXT(card, 4, "sendsnmp");
3751
3752         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3753         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3754                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3755         /* adjust PDU length fields in IPA_PDU_HEADER */
3756         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3757         s2 = (u32) len;
3758         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3759         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3760         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3761         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3762         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3763                                       reply_cb, reply_param);
3764 }
3765
3766 static int qeth_snmp_command_cb(struct qeth_card *card,
3767                 struct qeth_reply *reply, unsigned long sdata)
3768 {
3769         struct qeth_ipa_cmd *cmd;
3770         struct qeth_arp_query_info *qinfo;
3771         struct qeth_snmp_cmd *snmp;
3772         unsigned char *data;
3773         __u16 data_len;
3774
3775         QETH_CARD_TEXT(card, 3, "snpcmdcb");
3776
3777         cmd = (struct qeth_ipa_cmd *) sdata;
3778         data = (unsigned char *)((char *)cmd - reply->offset);
3779         qinfo = (struct qeth_arp_query_info *) reply->param;
3780         snmp = &cmd->data.setadapterparms.data.snmp;
3781
3782         if (cmd->hdr.return_code) {
3783                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3784                 return 0;
3785         }
3786         if (cmd->data.setadapterparms.hdr.return_code) {
3787                 cmd->hdr.return_code =
3788                         cmd->data.setadapterparms.hdr.return_code;
3789                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3790                 return 0;
3791         }
3792         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3793         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3794                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3795         else
3796                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3797
3798         /* check if there is enough room in userspace */
3799         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3800                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3801                 cmd->hdr.return_code = -ENOMEM;
3802                 return 0;
3803         }
3804         QETH_CARD_TEXT_(card, 4, "snore%i",
3805                        cmd->data.setadapterparms.hdr.used_total);
3806         QETH_CARD_TEXT_(card, 4, "sseqn%i",
3807                 cmd->data.setadapterparms.hdr.seq_no);
3808         /*copy entries to user buffer*/
3809         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3810                 memcpy(qinfo->udata + qinfo->udata_offset,
3811                        (char *)snmp,
3812                        data_len + offsetof(struct qeth_snmp_cmd, data));
3813                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3814         } else {
3815                 memcpy(qinfo->udata + qinfo->udata_offset,
3816                        (char *)&snmp->request, data_len);
3817         }
3818         qinfo->udata_offset += data_len;
3819         /* check if all replies received ... */
3820                 QETH_CARD_TEXT_(card, 4, "srtot%i",
3821                                cmd->data.setadapterparms.hdr.used_total);
3822                 QETH_CARD_TEXT_(card, 4, "srseq%i",
3823                                cmd->data.setadapterparms.hdr.seq_no);
3824         if (cmd->data.setadapterparms.hdr.seq_no <
3825             cmd->data.setadapterparms.hdr.used_total)
3826                 return 1;
3827         return 0;
3828 }
3829
3830 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3831 {
3832         struct qeth_cmd_buffer *iob;
3833         struct qeth_ipa_cmd *cmd;
3834         struct qeth_snmp_ureq *ureq;
3835         int req_len;
3836         struct qeth_arp_query_info qinfo = {0, };
3837         int rc = 0;
3838
3839         QETH_CARD_TEXT(card, 3, "snmpcmd");
3840
3841         if (card->info.guestlan)
3842                 return -EOPNOTSUPP;
3843
3844         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3845             (!card->options.layer2)) {
3846                 return -EOPNOTSUPP;
3847         }
3848         /* skip 4 bytes (data_len struct member) to get req_len */
3849         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3850                 return -EFAULT;
3851         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
3852         if (IS_ERR(ureq)) {
3853                 QETH_CARD_TEXT(card, 2, "snmpnome");
3854                 return PTR_ERR(ureq);
3855         }
3856         qinfo.udata_len = ureq->hdr.data_len;
3857         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3858         if (!qinfo.udata) {
3859                 kfree(ureq);
3860                 return -ENOMEM;
3861         }
3862         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3863
3864         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3865                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3866         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3867         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3868         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3869                                     qeth_snmp_command_cb, (void *)&qinfo);
3870         if (rc)
3871                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3872                            QETH_CARD_IFNAME(card), rc);
3873         else {
3874                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3875                         rc = -EFAULT;
3876         }
3877
3878         kfree(ureq);
3879         kfree(qinfo.udata);
3880         return rc;
3881 }
3882 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3883
3884 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3885 {
3886         switch (card->info.type) {
3887         case QETH_CARD_TYPE_IQD:
3888                 return 2;
3889         default:
3890                 return 0;
3891         }
3892 }
3893
3894 static void qeth_determine_capabilities(struct qeth_card *card)
3895 {
3896         int rc;
3897         int length;
3898         char *prcd;
3899         struct ccw_device *ddev;
3900         int ddev_offline = 0;
3901
3902         QETH_DBF_TEXT(SETUP, 2, "detcapab");
3903         ddev = CARD_DDEV(card);
3904         if (!ddev->online) {
3905                 ddev_offline = 1;
3906                 rc = ccw_device_set_online(ddev);
3907                 if (rc) {
3908                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3909                         goto out;
3910                 }
3911         }
3912
3913         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
3914         if (rc) {
3915                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
3916                         dev_name(&card->gdev->dev), rc);
3917                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3918                 goto out_offline;
3919         }
3920         qeth_configure_unitaddr(card, prcd);
3921         qeth_configure_blkt_default(card, prcd);
3922         kfree(prcd);
3923
3924         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
3925         if (rc)
3926                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3927
3928 out_offline:
3929         if (ddev_offline == 1)
3930                 ccw_device_set_offline(ddev);
3931 out:
3932         return;
3933 }
3934
3935 static int qeth_qdio_establish(struct qeth_card *card)
3936 {
3937         struct qdio_initialize init_data;
3938         char *qib_param_field;
3939         struct qdio_buffer **in_sbal_ptrs;
3940         struct qdio_buffer **out_sbal_ptrs;
3941         int i, j, k;
3942         int rc = 0;
3943
3944         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3945
3946         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3947                               GFP_KERNEL);
3948         if (!qib_param_field)
3949                 return -ENOMEM;
3950
3951         qeth_create_qib_param_field(card, qib_param_field);
3952         qeth_create_qib_param_field_blkt(card, qib_param_field);
3953
3954         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3955                                GFP_KERNEL);
3956         if (!in_sbal_ptrs) {
3957                 kfree(qib_param_field);
3958                 return -ENOMEM;
3959         }
3960         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3961                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3962                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3963
3964         out_sbal_ptrs =
3965                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3966                         sizeof(void *), GFP_KERNEL);
3967         if (!out_sbal_ptrs) {
3968                 kfree(in_sbal_ptrs);
3969                 kfree(qib_param_field);
3970                 return -ENOMEM;
3971         }
3972         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3973                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3974                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3975                                 card->qdio.out_qs[i]->bufs[j].buffer);
3976                 }
3977
3978         memset(&init_data, 0, sizeof(struct qdio_initialize));
3979         init_data.cdev                   = CARD_DDEV(card);
3980         init_data.q_format               = qeth_get_qdio_q_format(card);
3981         init_data.qib_param_field_format = 0;
3982         init_data.qib_param_field        = qib_param_field;
3983         init_data.no_input_qs            = 1;
3984         init_data.no_output_qs           = card->qdio.no_out_queues;
3985         init_data.input_handler          = card->discipline.input_handler;
3986         init_data.output_handler         = card->discipline.output_handler;
3987         init_data.queue_start_poll       = card->discipline.start_poll;
3988         init_data.int_parm               = (unsigned long) card;
3989         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3990         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3991         init_data.scan_threshold =
3992                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
3993
3994         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3995                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3996                 rc = qdio_allocate(&init_data);
3997                 if (rc) {
3998                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3999                         goto out;
4000                 }
4001                 rc = qdio_establish(&init_data);
4002                 if (rc) {
4003                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4004                         qdio_free(CARD_DDEV(card));
4005                 }
4006         }
4007 out:
4008         kfree(out_sbal_ptrs);
4009         kfree(in_sbal_ptrs);
4010         kfree(qib_param_field);
4011         return rc;
4012 }
4013
4014 static void qeth_core_free_card(struct qeth_card *card)
4015 {
4016
4017         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4018         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4019         qeth_clean_channel(&card->read);
4020         qeth_clean_channel(&card->write);
4021         if (card->dev)
4022                 free_netdev(card->dev);
4023         kfree(card->ip_tbd_list);
4024         qeth_free_qdio_buffers(card);
4025         unregister_service_level(&card->qeth_service_level);
4026         kfree(card);
4027 }
4028
4029 static struct ccw_device_id qeth_ids[] = {
4030         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4031                                         .driver_info = QETH_CARD_TYPE_OSD},
4032         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4033                                         .driver_info = QETH_CARD_TYPE_IQD},
4034         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4035                                         .driver_info = QETH_CARD_TYPE_OSN},
4036         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4037                                         .driver_info = QETH_CARD_TYPE_OSM},
4038         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4039                                         .driver_info = QETH_CARD_TYPE_OSX},
4040         {},
4041 };
4042 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4043
4044 static struct ccw_driver qeth_ccw_driver = {
4045         .driver = {
4046                 .owner = THIS_MODULE,
4047                 .name = "qeth",
4048         },
4049         .ids = qeth_ids,
4050         .probe = ccwgroup_probe_ccwdev,
4051         .remove = ccwgroup_remove_ccwdev,
4052 };
4053
4054 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4055                                 unsigned long driver_id)
4056 {
4057         return ccwgroup_create_from_string(root_dev, driver_id,
4058                                            &qeth_ccw_driver, 3, buf);
4059 }
4060
4061 int qeth_core_hardsetup_card(struct qeth_card *card)
4062 {
4063         int retries = 0;
4064         int rc;
4065
4066         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4067         atomic_set(&card->force_alloc_skb, 0);
4068         qeth_get_channel_path_desc(card);
4069 retry:
4070         if (retries)
4071                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4072                         dev_name(&card->gdev->dev));
4073         ccw_device_set_offline(CARD_DDEV(card));
4074         ccw_device_set_offline(CARD_WDEV(card));
4075         ccw_device_set_offline(CARD_RDEV(card));
4076         rc = ccw_device_set_online(CARD_RDEV(card));
4077         if (rc)
4078                 goto retriable;
4079         rc = ccw_device_set_online(CARD_WDEV(card));
4080         if (rc)
4081                 goto retriable;
4082         rc = ccw_device_set_online(CARD_DDEV(card));
4083         if (rc)
4084                 goto retriable;
4085         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4086 retriable:
4087         if (rc == -ERESTARTSYS) {
4088                 QETH_DBF_TEXT(SETUP, 2, "break1");
4089                 return rc;
4090         } else if (rc) {
4091                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4092                 if (++retries > 3)
4093                         goto out;
4094                 else
4095                         goto retry;
4096         }
4097         qeth_determine_capabilities(card);
4098         qeth_init_tokens(card);
4099         qeth_init_func_level(card);
4100         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4101         if (rc == -ERESTARTSYS) {
4102                 QETH_DBF_TEXT(SETUP, 2, "break2");
4103                 return rc;
4104         } else if (rc) {
4105                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4106                 if (--retries < 0)
4107                         goto out;
4108                 else
4109                         goto retry;
4110         }
4111         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4112         if (rc == -ERESTARTSYS) {
4113                 QETH_DBF_TEXT(SETUP, 2, "break3");
4114                 return rc;
4115         } else if (rc) {
4116                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4117                 if (--retries < 0)
4118                         goto out;
4119                 else
4120                         goto retry;
4121         }
4122         card->read_or_write_problem = 0;
4123         rc = qeth_mpc_initialize(card);
4124         if (rc) {
4125                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4126                 goto out;
4127         }
4128
4129         card->options.ipa4.supported_funcs = 0;
4130         card->options.adp.supported_funcs = 0;
4131         card->info.diagass_support = 0;
4132         qeth_query_ipassists(card, QETH_PROT_IPV4);
4133         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4134                 qeth_query_setadapterparms(card);
4135         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4136                 qeth_query_setdiagass(card);
4137         return 0;
4138 out:
4139         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4140                 "an error on the device\n");
4141         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4142                 dev_name(&card->gdev->dev), rc);
4143         return rc;
4144 }
4145 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4146
4147 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4148                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4149 {
4150         struct page *page = virt_to_page(element->addr);
4151         if (*pskb == NULL) {
4152                 /* the upper protocol layers assume that there is data in the
4153                  * skb itself. Copy a small amount (64 bytes) to make them
4154                  * happy. */
4155                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4156                 if (!(*pskb))
4157                         return -ENOMEM;
4158                 skb_reserve(*pskb, ETH_HLEN);
4159                 if (data_len <= 64) {
4160                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4161                                 data_len);
4162                 } else {
4163                         get_page(page);
4164                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4165                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4166                                 data_len - 64);
4167                         (*pskb)->data_len += data_len - 64;
4168                         (*pskb)->len      += data_len - 64;
4169                         (*pskb)->truesize += data_len - 64;
4170                         (*pfrag)++;
4171                 }
4172         } else {
4173                 get_page(page);
4174                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4175                 (*pskb)->data_len += data_len;
4176                 (*pskb)->len      += data_len;
4177                 (*pskb)->truesize += data_len;
4178                 (*pfrag)++;
4179         }
4180         return 0;
4181 }
4182
4183 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4184                 struct qdio_buffer *buffer,
4185                 struct qdio_buffer_element **__element, int *__offset,
4186                 struct qeth_hdr **hdr)
4187 {
4188         struct qdio_buffer_element *element = *__element;
4189         int offset = *__offset;
4190         struct sk_buff *skb = NULL;
4191         int skb_len = 0;
4192         void *data_ptr;
4193         int data_len;
4194         int headroom = 0;
4195         int use_rx_sg = 0;
4196         int frag = 0;
4197
4198         /* qeth_hdr must not cross element boundaries */
4199         if (element->length < offset + sizeof(struct qeth_hdr)) {
4200                 if (qeth_is_last_sbale(element))
4201                         return NULL;
4202                 element++;
4203                 offset = 0;
4204                 if (element->length < sizeof(struct qeth_hdr))
4205                         return NULL;
4206         }
4207         *hdr = element->addr + offset;
4208
4209         offset += sizeof(struct qeth_hdr);
4210         switch ((*hdr)->hdr.l2.id) {
4211         case QETH_HEADER_TYPE_LAYER2:
4212                 skb_len = (*hdr)->hdr.l2.pkt_length;
4213                 break;
4214         case QETH_HEADER_TYPE_LAYER3:
4215                 skb_len = (*hdr)->hdr.l3.length;
4216                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4217                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4218                         headroom = TR_HLEN;
4219                 else
4220                         headroom = ETH_HLEN;
4221                 break;
4222         case QETH_HEADER_TYPE_OSN:
4223                 skb_len = (*hdr)->hdr.osn.pdu_length;
4224                 headroom = sizeof(struct qeth_hdr);
4225                 break;
4226         default:
4227                 break;
4228         }
4229
4230         if (!skb_len)
4231                 return NULL;
4232
4233         if ((skb_len >= card->options.rx_sg_cb) &&
4234             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4235             (!atomic_read(&card->force_alloc_skb))) {
4236                 use_rx_sg = 1;
4237         } else {
4238                 skb = dev_alloc_skb(skb_len + headroom);
4239                 if (!skb)
4240                         goto no_mem;
4241                 if (headroom)
4242                         skb_reserve(skb, headroom);
4243         }
4244
4245         data_ptr = element->addr + offset;
4246         while (skb_len) {
4247                 data_len = min(skb_len, (int)(element->length - offset));
4248                 if (data_len) {
4249                         if (use_rx_sg) {
4250                                 if (qeth_create_skb_frag(element, &skb, offset,
4251                                     &frag, data_len))
4252                                         goto no_mem;
4253                         } else {
4254                                 memcpy(skb_put(skb, data_len), data_ptr,
4255                                         data_len);
4256                         }
4257                 }
4258                 skb_len -= data_len;
4259                 if (skb_len) {
4260                         if (qeth_is_last_sbale(element)) {
4261                                 QETH_CARD_TEXT(card, 4, "unexeob");
4262                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4263                                 dev_kfree_skb_any(skb);
4264                                 card->stats.rx_errors++;
4265                                 return NULL;
4266                         }
4267                         element++;
4268                         offset = 0;
4269                         data_ptr = element->addr;
4270                 } else {
4271                         offset += data_len;
4272                 }
4273         }
4274         *__element = element;
4275         *__offset = offset;
4276         if (use_rx_sg && card->options.performance_stats) {
4277                 card->perf_stats.sg_skbs_rx++;
4278                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4279         }
4280         return skb;
4281 no_mem:
4282         if (net_ratelimit()) {
4283                 QETH_CARD_TEXT(card, 2, "noskbmem");
4284         }
4285         card->stats.rx_dropped++;
4286         return NULL;
4287 }
4288 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4289
4290 static void qeth_unregister_dbf_views(void)
4291 {
4292         int x;
4293         for (x = 0; x < QETH_DBF_INFOS; x++) {
4294                 debug_unregister(qeth_dbf[x].id);
4295                 qeth_dbf[x].id = NULL;
4296         }
4297 }
4298
4299 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4300 {
4301         char dbf_txt_buf[32];
4302         va_list args;
4303
4304         if (level > id->level)
4305                 return;
4306         va_start(args, fmt);
4307         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4308         va_end(args);
4309         debug_text_event(id, level, dbf_txt_buf);
4310 }
4311 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4312
4313 static int qeth_register_dbf_views(void)
4314 {
4315         int ret;
4316         int x;
4317
4318         for (x = 0; x < QETH_DBF_INFOS; x++) {
4319                 /* register the areas */
4320                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4321                                                 qeth_dbf[x].pages,
4322                                                 qeth_dbf[x].areas,
4323                                                 qeth_dbf[x].len);
4324                 if (qeth_dbf[x].id == NULL) {
4325                         qeth_unregister_dbf_views();
4326                         return -ENOMEM;
4327                 }
4328
4329                 /* register a view */
4330                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4331                 if (ret) {
4332                         qeth_unregister_dbf_views();
4333                         return ret;
4334                 }
4335
4336                 /* set a passing level */
4337                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4338         }
4339
4340         return 0;
4341 }
4342
4343 int qeth_core_load_discipline(struct qeth_card *card,
4344                 enum qeth_discipline_id discipline)
4345 {
4346         int rc = 0;
4347         switch (discipline) {
4348         case QETH_DISCIPLINE_LAYER3:
4349                 card->discipline.ccwgdriver = try_then_request_module(
4350                         symbol_get(qeth_l3_ccwgroup_driver),
4351                         "qeth_l3");
4352                 break;
4353         case QETH_DISCIPLINE_LAYER2:
4354                 card->discipline.ccwgdriver = try_then_request_module(
4355                         symbol_get(qeth_l2_ccwgroup_driver),
4356                         "qeth_l2");
4357                 break;
4358         }
4359         if (!card->discipline.ccwgdriver) {
4360                 dev_err(&card->gdev->dev, "There is no kernel module to "
4361                         "support discipline %d\n", discipline);
4362                 rc = -EINVAL;
4363         }
4364         return rc;
4365 }
4366
4367 void qeth_core_free_discipline(struct qeth_card *card)
4368 {
4369         if (card->options.layer2)
4370                 symbol_put(qeth_l2_ccwgroup_driver);
4371         else
4372                 symbol_put(qeth_l3_ccwgroup_driver);
4373         card->discipline.ccwgdriver = NULL;
4374 }
4375
4376 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4377 {
4378         struct qeth_card *card;
4379         struct device *dev;
4380         int rc;
4381         unsigned long flags;
4382         char dbf_name[20];
4383
4384         QETH_DBF_TEXT(SETUP, 2, "probedev");
4385
4386         dev = &gdev->dev;
4387         if (!get_device(dev))
4388                 return -ENODEV;
4389
4390         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4391
4392         card = qeth_alloc_card();
4393         if (!card) {
4394                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4395                 rc = -ENOMEM;
4396                 goto err_dev;
4397         }
4398
4399         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4400                 dev_name(&gdev->dev));
4401         card->debug = debug_register(dbf_name, 2, 1, 8);
4402         if (!card->debug) {
4403                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4404                 rc = -ENOMEM;
4405                 goto err_card;
4406         }
4407         debug_register_view(card->debug, &debug_hex_ascii_view);
4408
4409         card->read.ccwdev  = gdev->cdev[0];
4410         card->write.ccwdev = gdev->cdev[1];
4411         card->data.ccwdev  = gdev->cdev[2];
4412         dev_set_drvdata(&gdev->dev, card);
4413         card->gdev = gdev;
4414         gdev->cdev[0]->handler = qeth_irq;
4415         gdev->cdev[1]->handler = qeth_irq;
4416         gdev->cdev[2]->handler = qeth_irq;
4417
4418         rc = qeth_determine_card_type(card);
4419         if (rc) {
4420                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4421                 goto err_dbf;
4422         }
4423         rc = qeth_setup_card(card);
4424         if (rc) {
4425                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4426                 goto err_dbf;
4427         }
4428
4429         if (card->info.type == QETH_CARD_TYPE_OSN)
4430                 rc = qeth_core_create_osn_attributes(dev);
4431         else
4432                 rc = qeth_core_create_device_attributes(dev);
4433         if (rc)
4434                 goto err_dbf;
4435         switch (card->info.type) {
4436         case QETH_CARD_TYPE_OSN:
4437         case QETH_CARD_TYPE_OSM:
4438                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4439                 if (rc)
4440                         goto err_attr;
4441                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4442                 if (rc)
4443                         goto err_disc;
4444         case QETH_CARD_TYPE_OSD:
4445         case QETH_CARD_TYPE_OSX:
4446         default:
4447                 break;
4448         }
4449
4450         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4451         list_add_tail(&card->list, &qeth_core_card_list.list);
4452         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4453
4454         qeth_determine_capabilities(card);
4455         return 0;
4456
4457 err_disc:
4458         qeth_core_free_discipline(card);
4459 err_attr:
4460         if (card->info.type == QETH_CARD_TYPE_OSN)
4461                 qeth_core_remove_osn_attributes(dev);
4462         else
4463                 qeth_core_remove_device_attributes(dev);
4464 err_dbf:
4465         debug_unregister(card->debug);
4466 err_card:
4467         qeth_core_free_card(card);
4468 err_dev:
4469         put_device(dev);
4470         return rc;
4471 }
4472
4473 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4474 {
4475         unsigned long flags;
4476         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4477
4478         QETH_DBF_TEXT(SETUP, 2, "removedv");
4479
4480         if (card->info.type == QETH_CARD_TYPE_OSN) {
4481                 qeth_core_remove_osn_attributes(&gdev->dev);
4482         } else {
4483                 qeth_core_remove_device_attributes(&gdev->dev);
4484         }
4485
4486         if (card->discipline.ccwgdriver) {
4487                 card->discipline.ccwgdriver->remove(gdev);
4488                 qeth_core_free_discipline(card);
4489         }
4490
4491         debug_unregister(card->debug);
4492         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4493         list_del(&card->list);
4494         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4495         qeth_core_free_card(card);
4496         dev_set_drvdata(&gdev->dev, NULL);
4497         put_device(&gdev->dev);
4498         return;
4499 }
4500
4501 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4502 {
4503         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4504         int rc = 0;
4505         int def_discipline;
4506
4507         if (!card->discipline.ccwgdriver) {
4508                 if (card->info.type == QETH_CARD_TYPE_IQD)
4509                         def_discipline = QETH_DISCIPLINE_LAYER3;
4510                 else
4511                         def_discipline = QETH_DISCIPLINE_LAYER2;
4512                 rc = qeth_core_load_discipline(card, def_discipline);
4513                 if (rc)
4514                         goto err;
4515                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4516                 if (rc)
4517                         goto err;
4518         }
4519         rc = card->discipline.ccwgdriver->set_online(gdev);
4520 err:
4521         return rc;
4522 }
4523
4524 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4525 {
4526         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4527         return card->discipline.ccwgdriver->set_offline(gdev);
4528 }
4529
4530 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4531 {
4532         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4533         if (card->discipline.ccwgdriver &&
4534             card->discipline.ccwgdriver->shutdown)
4535                 card->discipline.ccwgdriver->shutdown(gdev);
4536 }
4537
4538 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4539 {
4540         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4541         if (card->discipline.ccwgdriver &&
4542             card->discipline.ccwgdriver->prepare)
4543                 return card->discipline.ccwgdriver->prepare(gdev);
4544         return 0;
4545 }
4546
4547 static void qeth_core_complete(struct ccwgroup_device *gdev)
4548 {
4549         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4550         if (card->discipline.ccwgdriver &&
4551             card->discipline.ccwgdriver->complete)
4552                 card->discipline.ccwgdriver->complete(gdev);
4553 }
4554
4555 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4556 {
4557         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4558         if (card->discipline.ccwgdriver &&
4559             card->discipline.ccwgdriver->freeze)
4560                 return card->discipline.ccwgdriver->freeze(gdev);
4561         return 0;
4562 }
4563
4564 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4565 {
4566         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4567         if (card->discipline.ccwgdriver &&
4568             card->discipline.ccwgdriver->thaw)
4569                 return card->discipline.ccwgdriver->thaw(gdev);
4570         return 0;
4571 }
4572
4573 static int qeth_core_restore(struct ccwgroup_device *gdev)
4574 {
4575         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4576         if (card->discipline.ccwgdriver &&
4577             card->discipline.ccwgdriver->restore)
4578                 return card->discipline.ccwgdriver->restore(gdev);
4579         return 0;
4580 }
4581
4582 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4583         .driver = {
4584                 .owner = THIS_MODULE,
4585                 .name = "qeth",
4586         },
4587         .driver_id = 0xD8C5E3C8,
4588         .probe = qeth_core_probe_device,
4589         .remove = qeth_core_remove_device,
4590         .set_online = qeth_core_set_online,
4591         .set_offline = qeth_core_set_offline,
4592         .shutdown = qeth_core_shutdown,
4593         .prepare = qeth_core_prepare,
4594         .complete = qeth_core_complete,
4595         .freeze = qeth_core_freeze,
4596         .thaw = qeth_core_thaw,
4597         .restore = qeth_core_restore,
4598 };
4599
4600 static ssize_t
4601 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4602                            size_t count)
4603 {
4604         int err;
4605         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4606                                         qeth_core_ccwgroup_driver.driver_id);
4607         if (err)
4608                 return err;
4609         else
4610                 return count;
4611 }
4612
4613 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4614
4615 static struct {
4616         const char str[ETH_GSTRING_LEN];
4617 } qeth_ethtool_stats_keys[] = {
4618 /*  0 */{"rx skbs"},
4619         {"rx buffers"},
4620         {"tx skbs"},
4621         {"tx buffers"},
4622         {"tx skbs no packing"},
4623         {"tx buffers no packing"},
4624         {"tx skbs packing"},
4625         {"tx buffers packing"},
4626         {"tx sg skbs"},
4627         {"tx sg frags"},
4628 /* 10 */{"rx sg skbs"},
4629         {"rx sg frags"},
4630         {"rx sg page allocs"},
4631         {"tx large kbytes"},
4632         {"tx large count"},
4633         {"tx pk state ch n->p"},
4634         {"tx pk state ch p->n"},
4635         {"tx pk watermark low"},
4636         {"tx pk watermark high"},
4637         {"queue 0 buffer usage"},
4638 /* 20 */{"queue 1 buffer usage"},
4639         {"queue 2 buffer usage"},
4640         {"queue 3 buffer usage"},
4641         {"rx poll time"},
4642         {"rx poll count"},
4643         {"rx do_QDIO time"},
4644         {"rx do_QDIO count"},
4645         {"tx handler time"},
4646         {"tx handler count"},
4647         {"tx time"},
4648 /* 30 */{"tx count"},
4649         {"tx do_QDIO time"},
4650         {"tx do_QDIO count"},
4651         {"tx csum"},
4652         {"tx lin"},
4653 };
4654
4655 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4656 {
4657         switch (stringset) {
4658         case ETH_SS_STATS:
4659                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4660         default:
4661                 return -EINVAL;
4662         }
4663 }
4664 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4665
4666 void qeth_core_get_ethtool_stats(struct net_device *dev,
4667                 struct ethtool_stats *stats, u64 *data)
4668 {
4669         struct qeth_card *card = dev->ml_priv;
4670         data[0] = card->stats.rx_packets -
4671                                 card->perf_stats.initial_rx_packets;
4672         data[1] = card->perf_stats.bufs_rec;
4673         data[2] = card->stats.tx_packets -
4674                                 card->perf_stats.initial_tx_packets;
4675         data[3] = card->perf_stats.bufs_sent;
4676         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4677                         - card->perf_stats.skbs_sent_pack;
4678         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4679         data[6] = card->perf_stats.skbs_sent_pack;
4680         data[7] = card->perf_stats.bufs_sent_pack;
4681         data[8] = card->perf_stats.sg_skbs_sent;
4682         data[9] = card->perf_stats.sg_frags_sent;
4683         data[10] = card->perf_stats.sg_skbs_rx;
4684         data[11] = card->perf_stats.sg_frags_rx;
4685         data[12] = card->perf_stats.sg_alloc_page_rx;
4686         data[13] = (card->perf_stats.large_send_bytes >> 10);
4687         data[14] = card->perf_stats.large_send_cnt;
4688         data[15] = card->perf_stats.sc_dp_p;
4689         data[16] = card->perf_stats.sc_p_dp;
4690         data[17] = QETH_LOW_WATERMARK_PACK;
4691         data[18] = QETH_HIGH_WATERMARK_PACK;
4692         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4693         data[20] = (card->qdio.no_out_queues > 1) ?
4694                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4695         data[21] = (card->qdio.no_out_queues > 2) ?
4696                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4697         data[22] = (card->qdio.no_out_queues > 3) ?
4698                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4699         data[23] = card->perf_stats.inbound_time;
4700         data[24] = card->perf_stats.inbound_cnt;
4701         data[25] = card->perf_stats.inbound_do_qdio_time;
4702         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4703         data[27] = card->perf_stats.outbound_handler_time;
4704         data[28] = card->perf_stats.outbound_handler_cnt;
4705         data[29] = card->perf_stats.outbound_time;
4706         data[30] = card->perf_stats.outbound_cnt;
4707         data[31] = card->perf_stats.outbound_do_qdio_time;
4708         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4709         data[33] = card->perf_stats.tx_csum;
4710         data[34] = card->perf_stats.tx_lin;
4711 }
4712 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4713
4714 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4715 {
4716         switch (stringset) {
4717         case ETH_SS_STATS:
4718                 memcpy(data, &qeth_ethtool_stats_keys,
4719                         sizeof(qeth_ethtool_stats_keys));
4720                 break;
4721         default:
4722                 WARN_ON(1);
4723                 break;
4724         }
4725 }
4726 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4727
4728 void qeth_core_get_drvinfo(struct net_device *dev,
4729                 struct ethtool_drvinfo *info)
4730 {
4731         struct qeth_card *card = dev->ml_priv;
4732         if (card->options.layer2)
4733                 strcpy(info->driver, "qeth_l2");
4734         else
4735                 strcpy(info->driver, "qeth_l3");
4736
4737         strcpy(info->version, "1.0");
4738         strcpy(info->fw_version, card->info.mcl_level);
4739         sprintf(info->bus_info, "%s/%s/%s",
4740                         CARD_RDEV_ID(card),
4741                         CARD_WDEV_ID(card),
4742                         CARD_DDEV_ID(card));
4743 }
4744 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4745
4746 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4747                                         struct ethtool_cmd *ecmd)
4748 {
4749         struct qeth_card *card = netdev->ml_priv;
4750         enum qeth_link_types link_type;
4751
4752         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4753                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4754         else
4755                 link_type = card->info.link_type;
4756
4757         ecmd->transceiver = XCVR_INTERNAL;
4758         ecmd->supported = SUPPORTED_Autoneg;
4759         ecmd->advertising = ADVERTISED_Autoneg;
4760         ecmd->duplex = DUPLEX_FULL;
4761         ecmd->autoneg = AUTONEG_ENABLE;
4762
4763         switch (link_type) {
4764         case QETH_LINK_TYPE_FAST_ETH:
4765         case QETH_LINK_TYPE_LANE_ETH100:
4766                 ecmd->supported |= SUPPORTED_10baseT_Half |
4767                                         SUPPORTED_10baseT_Full |
4768                                         SUPPORTED_100baseT_Half |
4769                                         SUPPORTED_100baseT_Full |
4770                                         SUPPORTED_TP;
4771                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4772                                         ADVERTISED_10baseT_Full |
4773                                         ADVERTISED_100baseT_Half |
4774                                         ADVERTISED_100baseT_Full |
4775                                         ADVERTISED_TP;
4776                 ecmd->speed = SPEED_100;
4777                 ecmd->port = PORT_TP;
4778                 break;
4779
4780         case QETH_LINK_TYPE_GBIT_ETH:
4781         case QETH_LINK_TYPE_LANE_ETH1000:
4782                 ecmd->supported |= SUPPORTED_10baseT_Half |
4783                                         SUPPORTED_10baseT_Full |
4784                                         SUPPORTED_100baseT_Half |
4785                                         SUPPORTED_100baseT_Full |
4786                                         SUPPORTED_1000baseT_Half |
4787                                         SUPPORTED_1000baseT_Full |
4788                                         SUPPORTED_FIBRE;
4789                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4790                                         ADVERTISED_10baseT_Full |
4791                                         ADVERTISED_100baseT_Half |
4792                                         ADVERTISED_100baseT_Full |
4793                                         ADVERTISED_1000baseT_Half |
4794                                         ADVERTISED_1000baseT_Full |
4795                                         ADVERTISED_FIBRE;
4796                 ecmd->speed = SPEED_1000;
4797                 ecmd->port = PORT_FIBRE;
4798                 break;
4799
4800         case QETH_LINK_TYPE_10GBIT_ETH:
4801                 ecmd->supported |= SUPPORTED_10baseT_Half |
4802                                         SUPPORTED_10baseT_Full |
4803                                         SUPPORTED_100baseT_Half |
4804                                         SUPPORTED_100baseT_Full |
4805                                         SUPPORTED_1000baseT_Half |
4806                                         SUPPORTED_1000baseT_Full |
4807                                         SUPPORTED_10000baseT_Full |
4808                                         SUPPORTED_FIBRE;
4809                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4810                                         ADVERTISED_10baseT_Full |
4811                                         ADVERTISED_100baseT_Half |
4812                                         ADVERTISED_100baseT_Full |
4813                                         ADVERTISED_1000baseT_Half |
4814                                         ADVERTISED_1000baseT_Full |
4815                                         ADVERTISED_10000baseT_Full |
4816                                         ADVERTISED_FIBRE;
4817                 ecmd->speed = SPEED_10000;
4818                 ecmd->port = PORT_FIBRE;
4819                 break;
4820
4821         default:
4822                 ecmd->supported |= SUPPORTED_10baseT_Half |
4823                                         SUPPORTED_10baseT_Full |
4824                                         SUPPORTED_TP;
4825                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4826                                         ADVERTISED_10baseT_Full |
4827                                         ADVERTISED_TP;
4828                 ecmd->speed = SPEED_10;
4829                 ecmd->port = PORT_TP;
4830         }
4831
4832         return 0;
4833 }
4834 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4835
4836 static int __init qeth_core_init(void)
4837 {
4838         int rc;
4839
4840         pr_info("loading core functions\n");
4841         INIT_LIST_HEAD(&qeth_core_card_list.list);
4842         rwlock_init(&qeth_core_card_list.rwlock);
4843
4844         rc = qeth_register_dbf_views();
4845         if (rc)
4846                 goto out_err;
4847         rc = ccw_driver_register(&qeth_ccw_driver);
4848         if (rc)
4849                 goto ccw_err;
4850         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4851         if (rc)
4852                 goto ccwgroup_err;
4853         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4854                                 &driver_attr_group);
4855         if (rc)
4856                 goto driver_err;
4857         qeth_core_root_dev = root_device_register("qeth");
4858         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4859         if (rc)
4860                 goto register_err;
4861
4862         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4863                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4864         if (!qeth_core_header_cache) {
4865                 rc = -ENOMEM;
4866                 goto slab_err;
4867         }
4868
4869         return 0;
4870 slab_err:
4871         root_device_unregister(qeth_core_root_dev);
4872 register_err:
4873         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4874                            &driver_attr_group);
4875 driver_err:
4876         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4877 ccwgroup_err:
4878         ccw_driver_unregister(&qeth_ccw_driver);
4879 ccw_err:
4880         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4881         qeth_unregister_dbf_views();
4882 out_err:
4883         pr_err("Initializing the qeth device driver failed\n");
4884         return rc;
4885 }
4886
4887 static void __exit qeth_core_exit(void)
4888 {
4889         root_device_unregister(qeth_core_root_dev);
4890         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4891                            &driver_attr_group);
4892         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4893         ccw_driver_unregister(&qeth_ccw_driver);
4894         kmem_cache_destroy(qeth_core_header_cache);
4895         qeth_unregister_dbf_views();
4896         pr_info("core functions removed\n");
4897 }
4898
4899 module_init(qeth_core_init);
4900 module_exit(qeth_core_exit);
4901 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4902 MODULE_DESCRIPTION("qeth core functions");
4903 MODULE_LICENSE("GPL");