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
  28 #include "qeth_core.h"
  29
  30 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  31         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  32         /*                   N  P  A    M  L  V                      H  */
  33         [QETH_DBF_SETUP] = {"qeth_setup",
  34                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  35         [QETH_DBF_MSG]   = {"qeth_msg",
  36                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  37         [QETH_DBF_CTRL]  = {"qeth_control",
  38                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  39 };
  40 EXPORT_SYMBOL_GPL(qeth_dbf);
  41
  42 struct qeth_card_list_struct qeth_core_card_list;
  43 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  44 struct kmem_cache *qeth_core_header_cache;
  45 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  46
  47 static struct device *qeth_core_root_dev;
  48 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  49 static struct lock_class_key qdio_out_skb_queue_key;
  50
  51 static void qeth_send_control_data_cb(struct qeth_channel *,
  52                         struct qeth_cmd_buffer *);
  53 static int qeth_issue_next_read(struct qeth_card *);
  54 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  55 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  56 static void qeth_free_buffer_pool(struct qeth_card *);
  57 static int qeth_qdio_establish(struct qeth_card *);
  58
  59
  60 static inline const char *qeth_get_cardname(struct qeth_card *card)
  61 {
  62         if (card->info.guestlan) {
  63                 switch (card->info.type) {
  64                 case QETH_CARD_TYPE_OSD:
  65                         return " Guest LAN QDIO";
  66                 case QETH_CARD_TYPE_IQD:
  67                         return " Guest LAN Hiper";
  68                 case QETH_CARD_TYPE_OSM:
  69                         return " Guest LAN QDIO - OSM";
  70                 case QETH_CARD_TYPE_OSX:
  71                         return " Guest LAN QDIO - OSX";
  72                 default:
  73                         return " unknown";
  74                 }
  75         } else {
  76                 switch (card->info.type) {
  77                 case QETH_CARD_TYPE_OSD:
  78                         return " OSD Express";
  79                 case QETH_CARD_TYPE_IQD:
  80                         return " HiperSockets";
  81                 case QETH_CARD_TYPE_OSN:
  82                         return " OSN QDIO";
  83                 case QETH_CARD_TYPE_OSM:
  84                         return " OSM QDIO";
  85                 case QETH_CARD_TYPE_OSX:
  86                         return " OSX QDIO";
  87                 default:
  88                         return " unknown";
  89                 }
  90         }
  91         return " n/a";
  92 }
  93
  94 /* max length to be returned: 14 */
  95 const char *qeth_get_cardname_short(struct qeth_card *card)
  96 {
  97         if (card->info.guestlan) {
  98                 switch (card->info.type) {
  99                 case QETH_CARD_TYPE_OSD:
 100                         return "GuestLAN QDIO";
 101                 case QETH_CARD_TYPE_IQD:
 102                         return "GuestLAN Hiper";
 103                 case QETH_CARD_TYPE_OSM:
 104                         return "GuestLAN OSM";
 105                 case QETH_CARD_TYPE_OSX:
 106                         return "GuestLAN OSX";
 107                 default:
 108                         return "unknown";
 109                 }
 110         } else {
 111                 switch (card->info.type) {
 112                 case QETH_CARD_TYPE_OSD:
 113                         switch (card->info.link_type) {
 114                         case QETH_LINK_TYPE_FAST_ETH:
 115                                 return "OSD_100";
 116                         case QETH_LINK_TYPE_HSTR:
 117                                 return "HSTR";
 118                         case QETH_LINK_TYPE_GBIT_ETH:
 119                                 return "OSD_1000";
 120                         case QETH_LINK_TYPE_10GBIT_ETH:
 121                                 return "OSD_10GIG";
 122                         case QETH_LINK_TYPE_LANE_ETH100:
 123                                 return "OSD_FE_LANE";
 124                         case QETH_LINK_TYPE_LANE_TR:
 125                                 return "OSD_TR_LANE";
 126                         case QETH_LINK_TYPE_LANE_ETH1000:
 127                                 return "OSD_GbE_LANE";
 128                         case QETH_LINK_TYPE_LANE:
 129                                 return "OSD_ATM_LANE";
 130                         default:
 131                                 return "OSD_Express";
 132                         }
 133                 case QETH_CARD_TYPE_IQD:
 134                         return "HiperSockets";
 135                 case QETH_CARD_TYPE_OSN:
 136                         return "OSN";
 137                 case QETH_CARD_TYPE_OSM:
 138                         return "OSM_1000";
 139                 case QETH_CARD_TYPE_OSX:
 140                         return "OSX_10GIG";
 141                 default:
 142                         return "unknown";
 143                 }
 144         }
 145         return "n/a";
 146 }
 147
 148 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 149                          int clear_start_mask)
 150 {
 151         unsigned long flags;
 152
 153         spin_lock_irqsave(&card->thread_mask_lock, flags);
 154         card->thread_allowed_mask = threads;
 155         if (clear_start_mask)
 156                 card->thread_start_mask &= threads;
 157         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 158         wake_up(&card->wait_q);
 159 }
 160 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 161
 162 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 163 {
 164         unsigned long flags;
 165         int rc = 0;
 166
 167         spin_lock_irqsave(&card->thread_mask_lock, flags);
 168         rc = (card->thread_running_mask & threads);
 169         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 170         return rc;
 171 }
 172 EXPORT_SYMBOL_GPL(qeth_threads_running);
 173
 174 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 175 {
 176         return wait_event_interruptible(card->wait_q,
 177                         qeth_threads_running(card, threads) == 0);
 178 }
 179 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 180
 181 void qeth_clear_working_pool_list(struct qeth_card *card)
 182 {
 183         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 184
 185         QETH_CARD_TEXT(card, 5, "clwrklst");
 186         list_for_each_entry_safe(pool_entry, tmp,
 187                             &card->qdio.in_buf_pool.entry_list, list){
 188                         list_del(&pool_entry->list);
 189         }
 190 }
 191 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 192
 193 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 194 {
 195         struct qeth_buffer_pool_entry *pool_entry;
 196         void *ptr;
 197         int i, j;
 198
 199         QETH_CARD_TEXT(card, 5, "alocpool");
 200         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 201                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 202                 if (!pool_entry) {
 203                         qeth_free_buffer_pool(card);
 204                         return -ENOMEM;
 205                 }
 206                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 207                         ptr = (void *) __get_free_page(GFP_KERNEL);
 208                         if (!ptr) {
 209                                 while (j > 0)
 210                                         free_page((unsigned long)
 211                                                   pool_entry->elements[--j]);
 212                                 kfree(pool_entry);
 213                                 qeth_free_buffer_pool(card);
 214                                 return -ENOMEM;
 215                         }
 216                         pool_entry->elements[j] = ptr;
 217                 }
 218                 list_add(&pool_entry->init_list,
 219                          &card->qdio.init_pool.entry_list);
 220         }
 221         return 0;
 222 }
 223
 224 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 225 {
 226         QETH_CARD_TEXT(card, 2, "realcbp");
 227
 228         if ((card->state != CARD_STATE_DOWN) &&
 229             (card->state != CARD_STATE_RECOVER))
 230                 return -EPERM;
 231
 232         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 233         qeth_clear_working_pool_list(card);
 234         qeth_free_buffer_pool(card);
 235         card->qdio.in_buf_pool.buf_count = bufcnt;
 236         card->qdio.init_pool.buf_count = bufcnt;
 237         return qeth_alloc_buffer_pool(card);
 238 }
 239 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 240
 241 static int qeth_issue_next_read(struct qeth_card *card)
 242 {
 243         int rc;
 244         struct qeth_cmd_buffer *iob;
 245
 246         QETH_CARD_TEXT(card, 5, "issnxrd");
 247         if (card->read.state != CH_STATE_UP)
 248                 return -EIO;
 249         iob = qeth_get_buffer(&card->read);
 250         if (!iob) {
 251                 dev_warn(&card->gdev->dev, "The qeth device driver "
 252                         "failed to recover an error on the device\n");
 253                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 254                         "available\n", dev_name(&card->gdev->dev));
 255                 return -ENOMEM;
 256         }
 257         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 258         QETH_CARD_TEXT(card, 6, "noirqpnd");
 259         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 260                               (addr_t) iob, 0, 0);
 261         if (rc) {
 262                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 263                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 264                 atomic_set(&card->read.irq_pending, 0);
 265                 qeth_schedule_recovery(card);
 266                 wake_up(&card->wait_q);
 267         }
 268         return rc;
 269 }
 270
 271 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 272 {
 273         struct qeth_reply *reply;
 274
 275         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 276         if (reply) {
 277                 atomic_set(&reply->refcnt, 1);
 278                 atomic_set(&reply->received, 0);
 279                 reply->card = card;
 280         };
 281         return reply;
 282 }
 283
 284 static void qeth_get_reply(struct qeth_reply *reply)
 285 {
 286         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 287         atomic_inc(&reply->refcnt);
 288 }
 289
 290 static void qeth_put_reply(struct qeth_reply *reply)
 291 {
 292         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 293         if (atomic_dec_and_test(&reply->refcnt))
 294                 kfree(reply);
 295 }
 296
 297 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 298                 struct qeth_card *card)
 299 {
 300         char *ipa_name;
 301         int com = cmd->hdr.command;
 302         ipa_name = qeth_get_ipa_cmd_name(com);
 303         if (rc)
 304                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 305                                 ipa_name, com, QETH_CARD_IFNAME(card),
 306                                         rc, qeth_get_ipa_msg(rc));
 307         else
 308                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 309                                 ipa_name, com, QETH_CARD_IFNAME(card));
 310 }
 311
 312 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 313                 struct qeth_cmd_buffer *iob)
 314 {
 315         struct qeth_ipa_cmd *cmd = NULL;
 316
 317         QETH_CARD_TEXT(card, 5, "chkipad");
 318         if (IS_IPA(iob->data)) {
 319                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 320                 if (IS_IPA_REPLY(cmd)) {
 321                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 322                             cmd->hdr.command != IPA_CMD_DELCCID &&
 323                             cmd->hdr.command != IPA_CMD_MODCCID &&
 324                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 325                                 qeth_issue_ipa_msg(cmd,
 326                                                 cmd->hdr.return_code, card);
 327                         return cmd;
 328                 } else {
 329                         switch (cmd->hdr.command) {
 330                         case IPA_CMD_STOPLAN:
 331                                 dev_warn(&card->gdev->dev,
 332                                            "The link for interface %s on CHPID"
 333                                            " 0x%X failed\n",
 334                                            QETH_CARD_IFNAME(card),
 335                                            card->info.chpid);
 336                                 card->lan_online = 0;
 337                                 if (card->dev && netif_carrier_ok(card->dev))
 338                                         netif_carrier_off(card->dev);
 339                                 return NULL;
 340                         case IPA_CMD_STARTLAN:
 341                                 dev_info(&card->gdev->dev,
 342                                            "The link for %s on CHPID 0x%X has"
 343                                            " been restored\n",
 344                                            QETH_CARD_IFNAME(card),
 345                                            card->info.chpid);
 346                                 netif_carrier_on(card->dev);
 347                                 card->lan_online = 1;
 348                                 qeth_schedule_recovery(card);
 349                                 return NULL;
 350                         case IPA_CMD_MODCCID:
 351                                 return cmd;
 352                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 353                                 QETH_CARD_TEXT(card, 3, "irla");
 354                                 break;
 355                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 356                                 QETH_CARD_TEXT(card, 3, "urla");
 357                                 break;
 358                         default:
 359                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 360                                            "but not a reply!\n");
 361                                 break;
 362                         }
 363                 }
 364         }
 365         return cmd;
 366 }
 367
 368 void qeth_clear_ipacmd_list(struct qeth_card *card)
 369 {
 370         struct qeth_reply *reply, *r;
 371         unsigned long flags;
 372
 373         QETH_CARD_TEXT(card, 4, "clipalst");
 374
 375         spin_lock_irqsave(&card->lock, flags);
 376         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 377                 qeth_get_reply(reply);
 378                 reply->rc = -EIO;
 379                 atomic_inc(&reply->received);
 380                 list_del_init(&reply->list);
 381                 wake_up(&reply->wait_q);
 382                 qeth_put_reply(reply);
 383         }
 384         spin_unlock_irqrestore(&card->lock, flags);
 385 }
 386 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 387
 388 static int qeth_check_idx_response(struct qeth_card *card,
 389         unsigned char *buffer)
 390 {
 391         if (!buffer)
 392                 return 0;
 393
 394         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 395         if ((buffer[2] & 0xc0) == 0xc0) {
 396                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 397                            "with cause code 0x%02x%s\n",
 398                            buffer[4],
 399                            ((buffer[4] == 0x22) ?
 400                             " -- try another portname" : ""));
 401                 QETH_CARD_TEXT(card, 2, "ckidxres");
 402                 QETH_CARD_TEXT(card, 2, " idxterm");
 403                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 404                 if (buffer[4] == 0xf6) {
 405                         dev_err(&card->gdev->dev,
 406                         "The qeth device is not configured "
 407                         "for the OSI layer required by z/VM\n");
 408                         return -EPERM;
 409                 }
 410                 return -EIO;
 411         }
 412         return 0;
 413 }
 414
 415 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 416                 __u32 len)
 417 {
 418         struct qeth_card *card;
 419
 420         card = CARD_FROM_CDEV(channel->ccwdev);
 421         QETH_CARD_TEXT(card, 4, "setupccw");
 422         if (channel == &card->read)
 423                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 424         else
 425                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 426         channel->ccw.count = len;
 427         channel->ccw.cda = (__u32) __pa(iob);
 428 }
 429
 430 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 431 {
 432         __u8 index;
 433
 434         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 435         index = channel->io_buf_no;
 436         do {
 437                 if (channel->iob[index].state == BUF_STATE_FREE) {
 438                         channel->iob[index].state = BUF_STATE_LOCKED;
 439                         channel->io_buf_no = (channel->io_buf_no + 1) %
 440                                 QETH_CMD_BUFFER_NO;
 441                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 442                         return channel->iob + index;
 443                 }
 444                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 445         } while (index != channel->io_buf_no);
 446
 447         return NULL;
 448 }
 449
 450 void qeth_release_buffer(struct qeth_channel *channel,
 451                 struct qeth_cmd_buffer *iob)
 452 {
 453         unsigned long flags;
 454
 455         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 456         spin_lock_irqsave(&channel->iob_lock, flags);
 457         memset(iob->data, 0, QETH_BUFSIZE);
 458         iob->state = BUF_STATE_FREE;
 459         iob->callback = qeth_send_control_data_cb;
 460         iob->rc = 0;
 461         spin_unlock_irqrestore(&channel->iob_lock, flags);
 462 }
 463 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 464
 465 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 466 {
 467         struct qeth_cmd_buffer *buffer = NULL;
 468         unsigned long flags;
 469
 470         spin_lock_irqsave(&channel->iob_lock, flags);
 471         buffer = __qeth_get_buffer(channel);
 472         spin_unlock_irqrestore(&channel->iob_lock, flags);
 473         return buffer;
 474 }
 475
 476 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 477 {
 478         struct qeth_cmd_buffer *buffer;
 479         wait_event(channel->wait_q,
 480                    ((buffer = qeth_get_buffer(channel)) != NULL));
 481         return buffer;
 482 }
 483 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 484
 485 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 486 {
 487         int cnt;
 488
 489         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 490                 qeth_release_buffer(channel, &channel->iob[cnt]);
 491         channel->buf_no = 0;
 492         channel->io_buf_no = 0;
 493 }
 494 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 495
 496 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 497                   struct qeth_cmd_buffer *iob)
 498 {
 499         struct qeth_card *card;
 500         struct qeth_reply *reply, *r;
 501         struct qeth_ipa_cmd *cmd;
 502         unsigned long flags;
 503         int keep_reply;
 504         int rc = 0;
 505
 506         card = CARD_FROM_CDEV(channel->ccwdev);
 507         QETH_CARD_TEXT(card, 4, "sndctlcb");
 508         rc = qeth_check_idx_response(card, iob->data);
 509         switch (rc) {
 510         case 0:
 511                 break;
 512         case -EIO:
 513                 qeth_clear_ipacmd_list(card);
 514                 qeth_schedule_recovery(card);
 515                 /* fall through */
 516         default:
 517                 goto out;
 518         }
 519
 520         cmd = qeth_check_ipa_data(card, iob);
 521         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 522                 goto out;
 523         /*in case of OSN : check if cmd is set */
 524         if (card->info.type == QETH_CARD_TYPE_OSN &&
 525             cmd &&
 526             cmd->hdr.command != IPA_CMD_STARTLAN &&
 527             card->osn_info.assist_cb != NULL) {
 528                 card->osn_info.assist_cb(card->dev, cmd);
 529                 goto out;
 530         }
 531
 532         spin_lock_irqsave(&card->lock, flags);
 533         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 534                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 535                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 536                         qeth_get_reply(reply);
 537                         list_del_init(&reply->list);
 538                         spin_unlock_irqrestore(&card->lock, flags);
 539                         keep_reply = 0;
 540                         if (reply->callback != NULL) {
 541                                 if (cmd) {
 542                                         reply->offset = (__u16)((char *)cmd -
 543                                                         (char *)iob->data);
 544                                         keep_reply = reply->callback(card,
 545                                                         reply,
 546                                                         (unsigned long)cmd);
 547                                 } else
 548                                         keep_reply = reply->callback(card,
 549                                                         reply,
 550                                                         (unsigned long)iob);
 551                         }
 552                         if (cmd)
 553                                 reply->rc = (u16) cmd->hdr.return_code;
 554                         else if (iob->rc)
 555                                 reply->rc = iob->rc;
 556                         if (keep_reply) {
 557                                 spin_lock_irqsave(&card->lock, flags);
 558                                 list_add_tail(&reply->list,
 559                                               &card->cmd_waiter_list);
 560                                 spin_unlock_irqrestore(&card->lock, flags);
 561                         } else {
 562                                 atomic_inc(&reply->received);
 563                                 wake_up(&reply->wait_q);
 564                         }
 565                         qeth_put_reply(reply);
 566                         goto out;
 567                 }
 568         }
 569         spin_unlock_irqrestore(&card->lock, flags);
 570 out:
 571         memcpy(&card->seqno.pdu_hdr_ack,
 572                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 573                 QETH_SEQ_NO_LENGTH);
 574         qeth_release_buffer(channel, iob);
 575 }
 576
 577 static int qeth_setup_channel(struct qeth_channel *channel)
 578 {
 579         int cnt;
 580
 581         QETH_DBF_TEXT(SETUP, 2, "setupch");
 582         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 583                 channel->iob[cnt].data =
 584                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 585                 if (channel->iob[cnt].data == NULL)
 586                         break;
 587                 channel->iob[cnt].state = BUF_STATE_FREE;
 588                 channel->iob[cnt].channel = channel;
 589                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 590                 channel->iob[cnt].rc = 0;
 591         }
 592         if (cnt < QETH_CMD_BUFFER_NO) {
 593                 while (cnt-- > 0)
 594                         kfree(channel->iob[cnt].data);
 595                 return -ENOMEM;
 596         }
 597         channel->buf_no = 0;
 598         channel->io_buf_no = 0;
 599         atomic_set(&channel->irq_pending, 0);
 600         spin_lock_init(&channel->iob_lock);
 601
 602         init_waitqueue_head(&channel->wait_q);
 603         return 0;
 604 }
 605
 606 static int qeth_set_thread_start_bit(struct qeth_card *card,
 607                 unsigned long thread)
 608 {
 609         unsigned long flags;
 610
 611         spin_lock_irqsave(&card->thread_mask_lock, flags);
 612         if (!(card->thread_allowed_mask & thread) ||
 613               (card->thread_start_mask & thread)) {
 614                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 615                 return -EPERM;
 616         }
 617         card->thread_start_mask |= thread;
 618         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 619         return 0;
 620 }
 621
 622 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 623 {
 624         unsigned long flags;
 625
 626         spin_lock_irqsave(&card->thread_mask_lock, flags);
 627         card->thread_start_mask &= ~thread;
 628         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 629         wake_up(&card->wait_q);
 630 }
 631 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 632
 633 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 634 {
 635         unsigned long flags;
 636
 637         spin_lock_irqsave(&card->thread_mask_lock, flags);
 638         card->thread_running_mask &= ~thread;
 639         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 640         wake_up(&card->wait_q);
 641 }
 642 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 643
 644 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 645 {
 646         unsigned long flags;
 647         int rc = 0;
 648
 649         spin_lock_irqsave(&card->thread_mask_lock, flags);
 650         if (card->thread_start_mask & thread) {
 651                 if ((card->thread_allowed_mask & thread) &&
 652                     !(card->thread_running_mask & thread)) {
 653                         rc = 1;
 654                         card->thread_start_mask &= ~thread;
 655                         card->thread_running_mask |= thread;
 656                 } else
 657                         rc = -EPERM;
 658         }
 659         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 660         return rc;
 661 }
 662
 663 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 664 {
 665         int rc = 0;
 666
 667         wait_event(card->wait_q,
 668                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 669         return rc;
 670 }
 671 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 672
 673 void qeth_schedule_recovery(struct qeth_card *card)
 674 {
 675         QETH_CARD_TEXT(card, 2, "startrec");
 676         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 677                 schedule_work(&card->kernel_thread_starter);
 678 }
 679 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 680
 681 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 682 {
 683         int dstat, cstat;
 684         char *sense;
 685         struct qeth_card *card;
 686
 687         sense = (char *) irb->ecw;
 688         cstat = irb->scsw.cmd.cstat;
 689         dstat = irb->scsw.cmd.dstat;
 690         card = CARD_FROM_CDEV(cdev);
 691
 692         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 693                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 694                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 695                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 696                 dev_warn(&cdev->dev, "The qeth device driver "
 697                         "failed to recover an error on the device\n");
 698                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 699                         dev_name(&cdev->dev), dstat, cstat);
 700                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 701                                 16, 1, irb, 64, 1);
 702                 return 1;
 703         }
 704
 705         if (dstat & DEV_STAT_UNIT_CHECK) {
 706                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 707                     SENSE_RESETTING_EVENT_FLAG) {
 708                         QETH_CARD_TEXT(card, 2, "REVIND");
 709                         return 1;
 710                 }
 711                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 712                     SENSE_COMMAND_REJECT_FLAG) {
 713                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 714                         return 1;
 715                 }
 716                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 717                         QETH_CARD_TEXT(card, 2, "AFFE");
 718                         return 1;
 719                 }
 720                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 721                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 722                         return 0;
 723                 }
 724                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 725                         return 1;
 726         }
 727         return 0;
 728 }
 729
 730 static long __qeth_check_irb_error(struct ccw_device *cdev,
 731                 unsigned long intparm, struct irb *irb)
 732 {
 733         struct qeth_card *card;
 734
 735         card = CARD_FROM_CDEV(cdev);
 736
 737         if (!IS_ERR(irb))
 738                 return 0;
 739
 740         switch (PTR_ERR(irb)) {
 741         case -EIO:
 742                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 743                         dev_name(&cdev->dev));
 744                 QETH_CARD_TEXT(card, 2, "ckirberr");
 745                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 746                 break;
 747         case -ETIMEDOUT:
 748                 dev_warn(&cdev->dev, "A hardware operation timed out"
 749                         " on the device\n");
 750                 QETH_CARD_TEXT(card, 2, "ckirberr");
 751                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 752                 if (intparm == QETH_RCD_PARM) {
 753                         if (card && (card->data.ccwdev == cdev)) {
 754                                 card->data.state = CH_STATE_DOWN;
 755                                 wake_up(&card->wait_q);
 756                         }
 757                 }
 758                 break;
 759         default:
 760                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 761                         dev_name(&cdev->dev), PTR_ERR(irb));
 762                 QETH_CARD_TEXT(card, 2, "ckirberr");
 763                 QETH_CARD_TEXT(card, 2, "  rc???");
 764         }
 765         return PTR_ERR(irb);
 766 }
 767
 768 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 769                 struct irb *irb)
 770 {
 771         int rc;
 772         int cstat, dstat;
 773         struct qeth_cmd_buffer *buffer;
 774         struct qeth_channel *channel;
 775         struct qeth_card *card;
 776         struct qeth_cmd_buffer *iob;
 777         __u8 index;
 778
 779         if (__qeth_check_irb_error(cdev, intparm, irb))
 780                 return;
 781         cstat = irb->scsw.cmd.cstat;
 782         dstat = irb->scsw.cmd.dstat;
 783
 784         card = CARD_FROM_CDEV(cdev);
 785         if (!card)
 786                 return;
 787
 788         QETH_CARD_TEXT(card, 5, "irq");
 789
 790         if (card->read.ccwdev == cdev) {
 791                 channel = &card->read;
 792                 QETH_CARD_TEXT(card, 5, "read");
 793         } else if (card->write.ccwdev == cdev) {
 794                 channel = &card->write;
 795                 QETH_CARD_TEXT(card, 5, "write");
 796         } else {
 797                 channel = &card->data;
 798                 QETH_CARD_TEXT(card, 5, "data");
 799         }
 800         atomic_set(&channel->irq_pending, 0);
 801
 802         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 803                 channel->state = CH_STATE_STOPPED;
 804
 805         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 806                 channel->state = CH_STATE_HALTED;
 807
 808         /*let's wake up immediately on data channel*/
 809         if ((channel == &card->data) && (intparm != 0) &&
 810             (intparm != QETH_RCD_PARM))
 811                 goto out;
 812
 813         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 814                 QETH_CARD_TEXT(card, 6, "clrchpar");
 815                 /* we don't have to handle this further */
 816                 intparm = 0;
 817         }
 818         if (intparm == QETH_HALT_CHANNEL_PARM) {
 819                 QETH_CARD_TEXT(card, 6, "hltchpar");
 820                 /* we don't have to handle this further */
 821                 intparm = 0;
 822         }
 823         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 824             (dstat & DEV_STAT_UNIT_CHECK) ||
 825             (cstat)) {
 826                 if (irb->esw.esw0.erw.cons) {
 827                         dev_warn(&channel->ccwdev->dev,
 828                                 "The qeth device driver failed to recover "
 829                                 "an error on the device\n");
 830                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 831                                 "0x%X dstat 0x%X\n",
 832                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 833                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 834                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 835                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 836                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 837                 }
 838                 if (intparm == QETH_RCD_PARM) {
 839                         channel->state = CH_STATE_DOWN;
 840                         goto out;
 841                 }
 842                 rc = qeth_get_problem(cdev, irb);
 843                 if (rc) {
 844                         qeth_clear_ipacmd_list(card);
 845                         qeth_schedule_recovery(card);
 846                         goto out;
 847                 }
 848         }
 849
 850         if (intparm == QETH_RCD_PARM) {
 851                 channel->state = CH_STATE_RCD_DONE;
 852                 goto out;
 853         }
 854         if (intparm) {
 855                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 856                 buffer->state = BUF_STATE_PROCESSED;
 857         }
 858         if (channel == &card->data)
 859                 return;
 860         if (channel == &card->read &&
 861             channel->state == CH_STATE_UP)
 862                 qeth_issue_next_read(card);
 863
 864         iob = channel->iob;
 865         index = channel->buf_no;
 866         while (iob[index].state == BUF_STATE_PROCESSED) {
 867                 if (iob[index].callback != NULL)
 868                         iob[index].callback(channel, iob + index);
 869
 870                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 871         }
 872         channel->buf_no = index;
 873 out:
 874         wake_up(&card->wait_q);
 875         return;
 876 }
 877
 878 static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 879                  struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
 880 {
 881         int i;
 882         struct sk_buff *skb;
 883
 884         /* is PCI flag set on buffer? */
 885         if (buf->buffer->element[0].flags & 0x40)
 886                 atomic_dec(&queue->set_pci_flags_count);
 887
 888         if (!qeth_skip_skb) {
 889                 skb = skb_dequeue(&buf->skb_list);
 890                 while (skb) {
 891                         atomic_dec(&skb->users);
 892                         dev_kfree_skb_any(skb);
 893                         skb = skb_dequeue(&buf->skb_list);
 894                 }
 895         }
 896         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 897                 if (buf->buffer->element[i].addr && buf->is_header[i])
 898                         kmem_cache_free(qeth_core_header_cache,
 899                                 buf->buffer->element[i].addr);
 900                 buf->is_header[i] = 0;
 901                 buf->buffer->element[i].length = 0;
 902                 buf->buffer->element[i].addr = NULL;
 903                 buf->buffer->element[i].flags = 0;
 904         }
 905         buf->buffer->element[15].flags = 0;
 906         buf->next_element_to_fill = 0;
 907         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 908 }
 909
 910 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 911                 struct qeth_qdio_out_buffer *buf)
 912 {
 913         __qeth_clear_output_buffer(queue, buf, 0);
 914 }
 915
 916 void qeth_clear_qdio_buffers(struct qeth_card *card)
 917 {
 918         int i, j;
 919
 920         QETH_CARD_TEXT(card, 2, "clearqdbf");
 921         /* clear outbound buffers to free skbs */
 922         for (i = 0; i < card->qdio.no_out_queues; ++i)
 923                 if (card->qdio.out_qs[i]) {
 924                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 925                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 926                                                 &card->qdio.out_qs[i]->bufs[j]);
 927                 }
 928 }
 929 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 930
 931 static void qeth_free_buffer_pool(struct qeth_card *card)
 932 {
 933         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 934         int i = 0;
 935         list_for_each_entry_safe(pool_entry, tmp,
 936                                  &card->qdio.init_pool.entry_list, init_list){
 937                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 938                         free_page((unsigned long)pool_entry->elements[i]);
 939                 list_del(&pool_entry->init_list);
 940                 kfree(pool_entry);
 941         }
 942 }
 943
 944 static void qeth_free_qdio_buffers(struct qeth_card *card)
 945 {
 946         int i, j;
 947
 948         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 949                 QETH_QDIO_UNINITIALIZED)
 950                 return;
 951         kfree(card->qdio.in_q);
 952         card->qdio.in_q = NULL;
 953         /* inbound buffer pool */
 954         qeth_free_buffer_pool(card);
 955         /* free outbound qdio_qs */
 956         if (card->qdio.out_qs) {
 957                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 958                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 959                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 960                                                 &card->qdio.out_qs[i]->bufs[j]);
 961                         kfree(card->qdio.out_qs[i]);
 962                 }
 963                 kfree(card->qdio.out_qs);
 964                 card->qdio.out_qs = NULL;
 965         }
 966 }
 967
 968 static void qeth_clean_channel(struct qeth_channel *channel)
 969 {
 970         int cnt;
 971
 972         QETH_DBF_TEXT(SETUP, 2, "freech");
 973         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 974                 kfree(channel->iob[cnt].data);
 975 }
 976
 977 static void qeth_get_channel_path_desc(struct qeth_card *card)
 978 {
 979         struct ccw_device *ccwdev;
 980         struct channelPath_dsc {
 981                 u8 flags;
 982                 u8 lsn;
 983                 u8 desc;
 984                 u8 chpid;
 985                 u8 swla;
 986                 u8 zeroes;
 987                 u8 chla;
 988                 u8 chpp;
 989         } *chp_dsc;
 990
 991         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
 992
 993         ccwdev = card->data.ccwdev;
 994         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
 995         if (chp_dsc != NULL) {
 996                 /* CHPP field bit 6 == 1 -> single queue */
 997                 if ((chp_dsc->chpp & 0x02) == 0x02)
 998                         card->qdio.no_out_queues = 1;
 999                 card->info.func_level = 0x4100 + chp_dsc->desc;
1000                 kfree(chp_dsc);
1001         }
1002         if (card->qdio.no_out_queues == 1) {
1003                 card->qdio.default_out_queue = 0;
1004                 dev_info(&card->gdev->dev,
1005                         "Priority Queueing not supported\n");
1006         }
1007         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1008         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1009         return;
1010 }
1011
1012 static void qeth_init_qdio_info(struct qeth_card *card)
1013 {
1014         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1015         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1016         /* inbound */
1017         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1018         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1019         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1020         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1021         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1022 }
1023
1024 static void qeth_set_intial_options(struct qeth_card *card)
1025 {
1026         card->options.route4.type = NO_ROUTER;
1027         card->options.route6.type = NO_ROUTER;
1028         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1029         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1030         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1031         card->options.fake_broadcast = 0;
1032         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1033         card->options.performance_stats = 0;
1034         card->options.rx_sg_cb = QETH_RX_SG_CB;
1035         card->options.isolation = ISOLATION_MODE_NONE;
1036 }
1037
1038 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1039 {
1040         unsigned long flags;
1041         int rc = 0;
1042
1043         spin_lock_irqsave(&card->thread_mask_lock, flags);
1044         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1045                         (u8) card->thread_start_mask,
1046                         (u8) card->thread_allowed_mask,
1047                         (u8) card->thread_running_mask);
1048         rc = (card->thread_start_mask & thread);
1049         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1050         return rc;
1051 }
1052
1053 static void qeth_start_kernel_thread(struct work_struct *work)
1054 {
1055         struct qeth_card *card = container_of(work, struct qeth_card,
1056                                         kernel_thread_starter);
1057         QETH_CARD_TEXT(card , 2, "strthrd");
1058
1059         if (card->read.state != CH_STATE_UP &&
1060             card->write.state != CH_STATE_UP)
1061                 return;
1062         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1063                 kthread_run(card->discipline.recover, (void *) card,
1064                                 "qeth_recover");
1065 }
1066
1067 static int qeth_setup_card(struct qeth_card *card)
1068 {
1069
1070         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1071         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1072
1073         card->read.state  = CH_STATE_DOWN;
1074         card->write.state = CH_STATE_DOWN;
1075         card->data.state  = CH_STATE_DOWN;
1076         card->state = CARD_STATE_DOWN;
1077         card->lan_online = 0;
1078         card->use_hard_stop = 0;
1079         card->dev = NULL;
1080         spin_lock_init(&card->vlanlock);
1081         spin_lock_init(&card->mclock);
1082         card->vlangrp = NULL;
1083         spin_lock_init(&card->lock);
1084         spin_lock_init(&card->ip_lock);
1085         spin_lock_init(&card->thread_mask_lock);
1086         mutex_init(&card->conf_mutex);
1087         card->thread_start_mask = 0;
1088         card->thread_allowed_mask = 0;
1089         card->thread_running_mask = 0;
1090         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1091         INIT_LIST_HEAD(&card->ip_list);
1092         INIT_LIST_HEAD(card->ip_tbd_list);
1093         INIT_LIST_HEAD(&card->cmd_waiter_list);
1094         init_waitqueue_head(&card->wait_q);
1095         /* intial options */
1096         qeth_set_intial_options(card);
1097         /* IP address takeover */
1098         INIT_LIST_HEAD(&card->ipato.entries);
1099         card->ipato.enabled = 0;
1100         card->ipato.invert4 = 0;
1101         card->ipato.invert6 = 0;
1102         /* init QDIO stuff */
1103         qeth_init_qdio_info(card);
1104         return 0;
1105 }
1106
1107 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1108 {
1109         struct qeth_card *card = container_of(slr, struct qeth_card,
1110                                         qeth_service_level);
1111         if (card->info.mcl_level[0])
1112                 seq_printf(m, "qeth: %s firmware level %s\n",
1113                         CARD_BUS_ID(card), card->info.mcl_level);
1114 }
1115
1116 static struct qeth_card *qeth_alloc_card(void)
1117 {
1118         struct qeth_card *card;
1119
1120         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1121         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1122         if (!card)
1123                 goto out;
1124         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1125         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1126         if (!card->ip_tbd_list) {
1127                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1128                 goto out_card;
1129         }
1130         if (qeth_setup_channel(&card->read))
1131                 goto out_ip;
1132         if (qeth_setup_channel(&card->write))
1133                 goto out_channel;
1134         card->options.layer2 = -1;
1135         card->qeth_service_level.seq_print = qeth_core_sl_print;
1136         register_service_level(&card->qeth_service_level);
1137         return card;
1138
1139 out_channel:
1140         qeth_clean_channel(&card->read);
1141 out_ip:
1142         kfree(card->ip_tbd_list);
1143 out_card:
1144         kfree(card);
1145 out:
1146         return NULL;
1147 }
1148
1149 static int qeth_determine_card_type(struct qeth_card *card)
1150 {
1151         int i = 0;
1152
1153         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1154
1155         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1156         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1157         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1158                 if ((CARD_RDEV(card)->id.dev_type ==
1159                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1160                     (CARD_RDEV(card)->id.dev_model ==
1161                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1162                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1163                         card->qdio.no_out_queues =
1164                                 known_devices[i][QETH_QUEUE_NO_IND];
1165                         card->info.is_multicast_different =
1166                                 known_devices[i][QETH_MULTICAST_IND];
1167                         qeth_get_channel_path_desc(card);
1168                         return 0;
1169                 }
1170                 i++;
1171         }
1172         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1173         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1174                 "unknown type\n");
1175         return -ENOENT;
1176 }
1177
1178 static int qeth_clear_channel(struct qeth_channel *channel)
1179 {
1180         unsigned long flags;
1181         struct qeth_card *card;
1182         int rc;
1183
1184         card = CARD_FROM_CDEV(channel->ccwdev);
1185         QETH_CARD_TEXT(card, 3, "clearch");
1186         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1187         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1188         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1189
1190         if (rc)
1191                 return rc;
1192         rc = wait_event_interruptible_timeout(card->wait_q,
1193                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1194         if (rc == -ERESTARTSYS)
1195                 return rc;
1196         if (channel->state != CH_STATE_STOPPED)
1197                 return -ETIME;
1198         channel->state = CH_STATE_DOWN;
1199         return 0;
1200 }
1201
1202 static int qeth_halt_channel(struct qeth_channel *channel)
1203 {
1204         unsigned long flags;
1205         struct qeth_card *card;
1206         int rc;
1207
1208         card = CARD_FROM_CDEV(channel->ccwdev);
1209         QETH_CARD_TEXT(card, 3, "haltch");
1210         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1211         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1212         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1213
1214         if (rc)
1215                 return rc;
1216         rc = wait_event_interruptible_timeout(card->wait_q,
1217                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1218         if (rc == -ERESTARTSYS)
1219                 return rc;
1220         if (channel->state != CH_STATE_HALTED)
1221                 return -ETIME;
1222         return 0;
1223 }
1224
1225 static int qeth_halt_channels(struct qeth_card *card)
1226 {
1227         int rc1 = 0, rc2 = 0, rc3 = 0;
1228
1229         QETH_CARD_TEXT(card, 3, "haltchs");
1230         rc1 = qeth_halt_channel(&card->read);
1231         rc2 = qeth_halt_channel(&card->write);
1232         rc3 = qeth_halt_channel(&card->data);
1233         if (rc1)
1234                 return rc1;
1235         if (rc2)
1236                 return rc2;
1237         return rc3;
1238 }
1239
1240 static int qeth_clear_channels(struct qeth_card *card)
1241 {
1242         int rc1 = 0, rc2 = 0, rc3 = 0;
1243
1244         QETH_CARD_TEXT(card, 3, "clearchs");
1245         rc1 = qeth_clear_channel(&card->read);
1246         rc2 = qeth_clear_channel(&card->write);
1247         rc3 = qeth_clear_channel(&card->data);
1248         if (rc1)
1249                 return rc1;
1250         if (rc2)
1251                 return rc2;
1252         return rc3;
1253 }
1254
1255 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1256 {
1257         int rc = 0;
1258
1259         QETH_CARD_TEXT(card, 3, "clhacrd");
1260
1261         if (halt)
1262                 rc = qeth_halt_channels(card);
1263         if (rc)
1264                 return rc;
1265         return qeth_clear_channels(card);
1266 }
1267
1268 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1269 {
1270         int rc = 0;
1271
1272         QETH_CARD_TEXT(card, 3, "qdioclr");
1273         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1274                 QETH_QDIO_CLEANING)) {
1275         case QETH_QDIO_ESTABLISHED:
1276                 if (card->info.type == QETH_CARD_TYPE_IQD)
1277                         rc = qdio_shutdown(CARD_DDEV(card),
1278                                 QDIO_FLAG_CLEANUP_USING_HALT);
1279                 else
1280                         rc = qdio_shutdown(CARD_DDEV(card),
1281                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1282                 if (rc)
1283                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1284                 qdio_free(CARD_DDEV(card));
1285                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1286                 break;
1287         case QETH_QDIO_CLEANING:
1288                 return rc;
1289         default:
1290                 break;
1291         }
1292         rc = qeth_clear_halt_card(card, use_halt);
1293         if (rc)
1294                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1295         card->state = CARD_STATE_DOWN;
1296         return rc;
1297 }
1298 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1299
1300 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1301                                int *length)
1302 {
1303         struct ciw *ciw;
1304         char *rcd_buf;
1305         int ret;
1306         struct qeth_channel *channel = &card->data;
1307         unsigned long flags;
1308
1309         /*
1310          * scan for RCD command in extended SenseID data
1311          */
1312         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1313         if (!ciw || ciw->cmd == 0)
1314                 return -EOPNOTSUPP;
1315         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1316         if (!rcd_buf)
1317                 return -ENOMEM;
1318
1319         channel->ccw.cmd_code = ciw->cmd;
1320         channel->ccw.cda = (__u32) __pa(rcd_buf);
1321         channel->ccw.count = ciw->count;
1322         channel->ccw.flags = CCW_FLAG_SLI;
1323         channel->state = CH_STATE_RCD;
1324         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1325         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1326                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1327                                        QETH_RCD_TIMEOUT);
1328         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1329         if (!ret)
1330                 wait_event(card->wait_q,
1331                            (channel->state == CH_STATE_RCD_DONE ||
1332                             channel->state == CH_STATE_DOWN));
1333         if (channel->state == CH_STATE_DOWN)
1334                 ret = -EIO;
1335         else
1336                 channel->state = CH_STATE_DOWN;
1337         if (ret) {
1338                 kfree(rcd_buf);
1339                 *buffer = NULL;
1340                 *length = 0;
1341         } else {
1342                 *length = ciw->count;
1343                 *buffer = rcd_buf;
1344         }
1345         return ret;
1346 }
1347
1348 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1349 {
1350         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1351         card->info.chpid = prcd[30];
1352         card->info.unit_addr2 = prcd[31];
1353         card->info.cula = prcd[63];
1354         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1355                                (prcd[0x11] == _ascebc['M']));
1356 }
1357
1358 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1359 {
1360         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1361
1362         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1363                 card->info.blkt.time_total = 250;
1364                 card->info.blkt.inter_packet = 5;
1365                 card->info.blkt.inter_packet_jumbo = 15;
1366         } else {
1367                 card->info.blkt.time_total = 0;
1368                 card->info.blkt.inter_packet = 0;
1369                 card->info.blkt.inter_packet_jumbo = 0;
1370         }
1371 }
1372
1373 static void qeth_init_tokens(struct qeth_card *card)
1374 {
1375         card->token.issuer_rm_w = 0x00010103UL;
1376         card->token.cm_filter_w = 0x00010108UL;
1377         card->token.cm_connection_w = 0x0001010aUL;
1378         card->token.ulp_filter_w = 0x0001010bUL;
1379         card->token.ulp_connection_w = 0x0001010dUL;
1380 }
1381
1382 static void qeth_init_func_level(struct qeth_card *card)
1383 {
1384         switch (card->info.type) {
1385         case QETH_CARD_TYPE_IQD:
1386                 if (card->ipato.enabled)
1387                         card->info.func_level =
1388                                 QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1389                 else
1390                         card->info.func_level =
1391                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1392                 break;
1393         case QETH_CARD_TYPE_OSD:
1394         case QETH_CARD_TYPE_OSN:
1395                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1396                 break;
1397         default:
1398                 break;
1399         }
1400 }
1401
1402 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1403                 void (*idx_reply_cb)(struct qeth_channel *,
1404                         struct qeth_cmd_buffer *))
1405 {
1406         struct qeth_cmd_buffer *iob;
1407         unsigned long flags;
1408         int rc;
1409         struct qeth_card *card;
1410
1411         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1412         card = CARD_FROM_CDEV(channel->ccwdev);
1413         iob = qeth_get_buffer(channel);
1414         iob->callback = idx_reply_cb;
1415         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1416         channel->ccw.count = QETH_BUFSIZE;
1417         channel->ccw.cda = (__u32) __pa(iob->data);
1418
1419         wait_event(card->wait_q,
1420                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1421         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1422         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1423         rc = ccw_device_start(channel->ccwdev,
1424                               &channel->ccw, (addr_t) iob, 0, 0);
1425         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1426
1427         if (rc) {
1428                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1429                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1430                 atomic_set(&channel->irq_pending, 0);
1431                 wake_up(&card->wait_q);
1432                 return rc;
1433         }
1434         rc = wait_event_interruptible_timeout(card->wait_q,
1435                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1436         if (rc == -ERESTARTSYS)
1437                 return rc;
1438         if (channel->state != CH_STATE_UP) {
1439                 rc = -ETIME;
1440                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1441                 qeth_clear_cmd_buffers(channel);
1442         } else
1443                 rc = 0;
1444         return rc;
1445 }
1446
1447 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1448                 void (*idx_reply_cb)(struct qeth_channel *,
1449                         struct qeth_cmd_buffer *))
1450 {
1451         struct qeth_card *card;
1452         struct qeth_cmd_buffer *iob;
1453         unsigned long flags;
1454         __u16 temp;
1455         __u8 tmp;
1456         int rc;
1457         struct ccw_dev_id temp_devid;
1458
1459         card = CARD_FROM_CDEV(channel->ccwdev);
1460
1461         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1462
1463         iob = qeth_get_buffer(channel);
1464         iob->callback = idx_reply_cb;
1465         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1466         channel->ccw.count = IDX_ACTIVATE_SIZE;
1467         channel->ccw.cda = (__u32) __pa(iob->data);
1468         if (channel == &card->write) {
1469                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1470                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1471                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1472                 card->seqno.trans_hdr++;
1473         } else {
1474                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1475                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1476                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1477         }
1478         tmp = ((__u8)card->info.portno) | 0x80;
1479         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1480         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1481                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1482         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1483                &card->info.func_level, sizeof(__u16));
1484         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1485         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1486         temp = (card->info.cula << 8) + card->info.unit_addr2;
1487         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1488
1489         wait_event(card->wait_q,
1490                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1491         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1492         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1493         rc = ccw_device_start(channel->ccwdev,
1494                               &channel->ccw, (addr_t) iob, 0, 0);
1495         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1496
1497         if (rc) {
1498                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1499                         rc);
1500                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1501                 atomic_set(&channel->irq_pending, 0);
1502                 wake_up(&card->wait_q);
1503                 return rc;
1504         }
1505         rc = wait_event_interruptible_timeout(card->wait_q,
1506                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1507         if (rc == -ERESTARTSYS)
1508                 return rc;
1509         if (channel->state != CH_STATE_ACTIVATING) {
1510                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1511                         " failed to recover an error on the device\n");
1512                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1513                         dev_name(&channel->ccwdev->dev));
1514                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1515                 qeth_clear_cmd_buffers(channel);
1516                 return -ETIME;
1517         }
1518         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1519 }
1520
1521 static int qeth_peer_func_level(int level)
1522 {
1523         if ((level & 0xff) == 8)
1524                 return (level & 0xff) + 0x400;
1525         if (((level >> 8) & 3) == 1)
1526                 return (level & 0xff) + 0x200;
1527         return level;
1528 }
1529
1530 static void qeth_idx_write_cb(struct qeth_channel *channel,
1531                 struct qeth_cmd_buffer *iob)
1532 {
1533         struct qeth_card *card;
1534         __u16 temp;
1535
1536         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1537
1538         if (channel->state == CH_STATE_DOWN) {
1539                 channel->state = CH_STATE_ACTIVATING;
1540                 goto out;
1541         }
1542         card = CARD_FROM_CDEV(channel->ccwdev);
1543
1544         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1545                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1546                         dev_err(&card->write.ccwdev->dev,
1547                                 "The adapter is used exclusively by another "
1548                                 "host\n");
1549                 else
1550                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1551                                 " negative reply\n",
1552                                 dev_name(&card->write.ccwdev->dev));
1553                 goto out;
1554         }
1555         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1556         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1557                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1558                         "function level mismatch (sent: 0x%x, received: "
1559                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1560                         card->info.func_level, temp);
1561                 goto out;
1562         }
1563         channel->state = CH_STATE_UP;
1564 out:
1565         qeth_release_buffer(channel, iob);
1566 }
1567
1568 static void qeth_idx_read_cb(struct qeth_channel *channel,
1569                 struct qeth_cmd_buffer *iob)
1570 {
1571         struct qeth_card *card;
1572         __u16 temp;
1573
1574         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1575         if (channel->state == CH_STATE_DOWN) {
1576                 channel->state = CH_STATE_ACTIVATING;
1577                 goto out;
1578         }
1579
1580         card = CARD_FROM_CDEV(channel->ccwdev);
1581         if (qeth_check_idx_response(card, iob->data))
1582                         goto out;
1583
1584         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1585                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1586                 case QETH_IDX_ACT_ERR_EXCL:
1587                         dev_err(&card->write.ccwdev->dev,
1588                                 "The adapter is used exclusively by another "
1589                                 "host\n");
1590                         break;
1591                 case QETH_IDX_ACT_ERR_AUTH:
1592                 case QETH_IDX_ACT_ERR_AUTH_USER:
1593                         dev_err(&card->read.ccwdev->dev,
1594                                 "Setting the device online failed because of "
1595                                 "insufficient authorization\n");
1596                         break;
1597                 default:
1598                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1599                                 " negative reply\n",
1600                                 dev_name(&card->read.ccwdev->dev));
1601                 }
1602                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1603                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1604                 goto out;
1605         }
1606
1607 /**
1608  *  * temporary fix for microcode bug
1609  *   * to revert it,replace OR by AND
1610  *    */
1611         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1612              (card->info.type == QETH_CARD_TYPE_OSD))
1613                 card->info.portname_required = 1;
1614
1615         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1616         if (temp != qeth_peer_func_level(card->info.func_level)) {
1617                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1618                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1619                         dev_name(&card->read.ccwdev->dev),
1620                         card->info.func_level, temp);
1621                 goto out;
1622         }
1623         memcpy(&card->token.issuer_rm_r,
1624                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1625                QETH_MPC_TOKEN_LENGTH);
1626         memcpy(&card->info.mcl_level[0],
1627                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1628         channel->state = CH_STATE_UP;
1629 out:
1630         qeth_release_buffer(channel, iob);
1631 }
1632
1633 void qeth_prepare_control_data(struct qeth_card *card, int len,
1634                 struct qeth_cmd_buffer *iob)
1635 {
1636         qeth_setup_ccw(&card->write, iob->data, len);
1637         iob->callback = qeth_release_buffer;
1638
1639         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1640                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1641         card->seqno.trans_hdr++;
1642         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1643                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1644         card->seqno.pdu_hdr++;
1645         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1646                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1647         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1648 }
1649 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1650
1651 int qeth_send_control_data(struct qeth_card *card, int len,
1652                 struct qeth_cmd_buffer *iob,
1653                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1654                         unsigned long),
1655                 void *reply_param)
1656 {
1657         int rc;
1658         unsigned long flags;
1659         struct qeth_reply *reply = NULL;
1660         unsigned long timeout, event_timeout;
1661         struct qeth_ipa_cmd *cmd;
1662
1663         QETH_CARD_TEXT(card, 2, "sendctl");
1664
1665         reply = qeth_alloc_reply(card);
1666         if (!reply) {
1667                 return -ENOMEM;
1668         }
1669         reply->callback = reply_cb;
1670         reply->param = reply_param;
1671         if (card->state == CARD_STATE_DOWN)
1672                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1673         else
1674                 reply->seqno = card->seqno.ipa++;
1675         init_waitqueue_head(&reply->wait_q);
1676         spin_lock_irqsave(&card->lock, flags);
1677         list_add_tail(&reply->list, &card->cmd_waiter_list);
1678         spin_unlock_irqrestore(&card->lock, flags);
1679         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1680
1681         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1682         qeth_prepare_control_data(card, len, iob);
1683
1684         if (IS_IPA(iob->data))
1685                 event_timeout = QETH_IPA_TIMEOUT;
1686         else
1687                 event_timeout = QETH_TIMEOUT;
1688         timeout = jiffies + event_timeout;
1689
1690         QETH_CARD_TEXT(card, 6, "noirqpnd");
1691         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1692         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1693                               (addr_t) iob, 0, 0);
1694         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1695         if (rc) {
1696                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1697                         "ccw_device_start rc = %i\n",
1698                         dev_name(&card->write.ccwdev->dev), rc);
1699                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1700                 spin_lock_irqsave(&card->lock, flags);
1701                 list_del_init(&reply->list);
1702                 qeth_put_reply(reply);
1703                 spin_unlock_irqrestore(&card->lock, flags);
1704                 qeth_release_buffer(iob->channel, iob);
1705                 atomic_set(&card->write.irq_pending, 0);
1706                 wake_up(&card->wait_q);
1707                 return rc;
1708         }
1709
1710         /* we have only one long running ipassist, since we can ensure
1711            process context of this command we can sleep */
1712         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1713         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1714             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1715                 if (!wait_event_timeout(reply->wait_q,
1716                     atomic_read(&reply->received), event_timeout))
1717                         goto time_err;
1718         } else {
1719                 while (!atomic_read(&reply->received)) {
1720                         if (time_after(jiffies, timeout))
1721                                 goto time_err;
1722                         cpu_relax();
1723                 };
1724         }
1725
1726         rc = reply->rc;
1727         qeth_put_reply(reply);
1728         return rc;
1729
1730 time_err:
1731         spin_lock_irqsave(&reply->card->lock, flags);
1732         list_del_init(&reply->list);
1733         spin_unlock_irqrestore(&reply->card->lock, flags);
1734         reply->rc = -ETIME;
1735         atomic_inc(&reply->received);
1736         wake_up(&reply->wait_q);
1737         rc = reply->rc;
1738         qeth_put_reply(reply);
1739         return rc;
1740 }
1741 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1742
1743 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1744                 unsigned long data)
1745 {
1746         struct qeth_cmd_buffer *iob;
1747
1748         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1749
1750         iob = (struct qeth_cmd_buffer *) data;
1751         memcpy(&card->token.cm_filter_r,
1752                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1753                QETH_MPC_TOKEN_LENGTH);
1754         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1755         return 0;
1756 }
1757
1758 static int qeth_cm_enable(struct qeth_card *card)
1759 {
1760         int rc;
1761         struct qeth_cmd_buffer *iob;
1762
1763         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1764
1765         iob = qeth_wait_for_buffer(&card->write);
1766         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1767         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1768                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1769         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1770                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1771
1772         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1773                                     qeth_cm_enable_cb, NULL);
1774         return rc;
1775 }
1776
1777 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1778                 unsigned long data)
1779 {
1780
1781         struct qeth_cmd_buffer *iob;
1782
1783         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1784
1785         iob = (struct qeth_cmd_buffer *) data;
1786         memcpy(&card->token.cm_connection_r,
1787                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1788                QETH_MPC_TOKEN_LENGTH);
1789         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1790         return 0;
1791 }
1792
1793 static int qeth_cm_setup(struct qeth_card *card)
1794 {
1795         int rc;
1796         struct qeth_cmd_buffer *iob;
1797
1798         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1799
1800         iob = qeth_wait_for_buffer(&card->write);
1801         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1802         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1803                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1804         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1805                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1806         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1807                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1808         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1809                                     qeth_cm_setup_cb, NULL);
1810         return rc;
1811
1812 }
1813
1814 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1815 {
1816         switch (card->info.type) {
1817         case QETH_CARD_TYPE_UNKNOWN:
1818                 return 1500;
1819         case QETH_CARD_TYPE_IQD:
1820                 return card->info.max_mtu;
1821         case QETH_CARD_TYPE_OSD:
1822                 switch (card->info.link_type) {
1823                 case QETH_LINK_TYPE_HSTR:
1824                 case QETH_LINK_TYPE_LANE_TR:
1825                         return 2000;
1826                 default:
1827                         return 1492;
1828                 }
1829         case QETH_CARD_TYPE_OSM:
1830         case QETH_CARD_TYPE_OSX:
1831                 return 1492;
1832         default:
1833                 return 1500;
1834         }
1835 }
1836
1837 static inline int qeth_get_max_mtu_for_card(int cardtype)
1838 {
1839         switch (cardtype) {
1840
1841         case QETH_CARD_TYPE_UNKNOWN:
1842         case QETH_CARD_TYPE_OSD:
1843         case QETH_CARD_TYPE_OSN:
1844         case QETH_CARD_TYPE_OSM:
1845         case QETH_CARD_TYPE_OSX:
1846                 return 61440;
1847         case QETH_CARD_TYPE_IQD:
1848                 return 57344;
1849         default:
1850                 return 1500;
1851         }
1852 }
1853
1854 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1855 {
1856         switch (cardtype) {
1857         case QETH_CARD_TYPE_IQD:
1858                 return 1;
1859         default:
1860                 return 0;
1861         }
1862 }
1863
1864 static inline int qeth_get_mtu_outof_framesize(int framesize)
1865 {
1866         switch (framesize) {
1867         case 0x4000:
1868                 return 8192;
1869         case 0x6000:
1870                 return 16384;
1871         case 0xa000:
1872                 return 32768;
1873         case 0xffff:
1874                 return 57344;
1875         default:
1876                 return 0;
1877         }
1878 }
1879
1880 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1881 {
1882         switch (card->info.type) {
1883         case QETH_CARD_TYPE_OSD:
1884         case QETH_CARD_TYPE_OSM:
1885         case QETH_CARD_TYPE_OSX:
1886                 return ((mtu >= 576) && (mtu <= 61440));
1887         case QETH_CARD_TYPE_IQD:
1888                 return ((mtu >= 576) &&
1889                         (mtu <= card->info.max_mtu + 4096 - 32));
1890         case QETH_CARD_TYPE_OSN:
1891         case QETH_CARD_TYPE_UNKNOWN:
1892         default:
1893                 return 1;
1894         }
1895 }
1896
1897 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1898                 unsigned long data)
1899 {
1900
1901         __u16 mtu, framesize;
1902         __u16 len;
1903         __u8 link_type;
1904         struct qeth_cmd_buffer *iob;
1905
1906         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1907
1908         iob = (struct qeth_cmd_buffer *) data;
1909         memcpy(&card->token.ulp_filter_r,
1910                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1911                QETH_MPC_TOKEN_LENGTH);
1912         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1913                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1914                 mtu = qeth_get_mtu_outof_framesize(framesize);
1915                 if (!mtu) {
1916                         iob->rc = -EINVAL;
1917                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1918                         return 0;
1919                 }
1920                 card->info.max_mtu = mtu;
1921                 card->info.initial_mtu = mtu;
1922                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1923         } else {
1924                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1925                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1926                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1927         }
1928
1929         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1930         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1931                 memcpy(&link_type,
1932                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1933                 card->info.link_type = link_type;
1934         } else
1935                 card->info.link_type = 0;
1936         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1937         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1938         return 0;
1939 }
1940
1941 static int qeth_ulp_enable(struct qeth_card *card)
1942 {
1943         int rc;
1944         char prot_type;
1945         struct qeth_cmd_buffer *iob;
1946
1947         /*FIXME: trace view callbacks*/
1948         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1949
1950         iob = qeth_wait_for_buffer(&card->write);
1951         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1952
1953         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1954                 (__u8) card->info.portno;
1955         if (card->options.layer2)
1956                 if (card->info.type == QETH_CARD_TYPE_OSN)
1957                         prot_type = QETH_PROT_OSN2;
1958                 else
1959                         prot_type = QETH_PROT_LAYER2;
1960         else
1961                 prot_type = QETH_PROT_TCPIP;
1962
1963         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1964         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1965                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1966         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1967                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1968         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1969                card->info.portname, 9);
1970         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1971                                     qeth_ulp_enable_cb, NULL);
1972         return rc;
1973
1974 }
1975
1976 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1977                 unsigned long data)
1978 {
1979         struct qeth_cmd_buffer *iob;
1980         int rc = 0;
1981
1982         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1983
1984         iob = (struct qeth_cmd_buffer *) data;
1985         memcpy(&card->token.ulp_connection_r,
1986                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1987                QETH_MPC_TOKEN_LENGTH);
1988         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1989                      3)) {
1990                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1991                 dev_err(&card->gdev->dev, "A connection could not be "
1992                         "established because of an OLM limit\n");
1993                 rc = -EMLINK;
1994         }
1995         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1996         return rc;
1997 }
1998
1999 static int qeth_ulp_setup(struct qeth_card *card)
2000 {
2001         int rc;
2002         __u16 temp;
2003         struct qeth_cmd_buffer *iob;
2004         struct ccw_dev_id dev_id;
2005
2006         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2007
2008         iob = qeth_wait_for_buffer(&card->write);
2009         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2010
2011         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2012                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2013         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2014                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2015         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2016                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2017
2018         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2019         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2020         temp = (card->info.cula << 8) + card->info.unit_addr2;
2021         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2022         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2023                                     qeth_ulp_setup_cb, NULL);
2024         return rc;
2025 }
2026
2027 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2028 {
2029         int i, j;
2030
2031         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2032
2033         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2034                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2035                 return 0;
2036
2037         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2038                                   GFP_KERNEL);
2039         if (!card->qdio.in_q)
2040                 goto out_nomem;
2041         QETH_DBF_TEXT(SETUP, 2, "inq");
2042         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2043         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2044         /* give inbound qeth_qdio_buffers their qdio_buffers */
2045         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2046                 card->qdio.in_q->bufs[i].buffer =
2047                         &card->qdio.in_q->qdio_bufs[i];
2048         /* inbound buffer pool */
2049         if (qeth_alloc_buffer_pool(card))
2050                 goto out_freeinq;
2051         /* outbound */
2052         card->qdio.out_qs =
2053                 kmalloc(card->qdio.no_out_queues *
2054                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2055         if (!card->qdio.out_qs)
2056                 goto out_freepool;
2057         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2058                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2059                                                GFP_KERNEL);
2060                 if (!card->qdio.out_qs[i])
2061                         goto out_freeoutq;
2062                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2063                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2064                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2065                 card->qdio.out_qs[i]->queue_no = i;
2066                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2067                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2068                         card->qdio.out_qs[i]->bufs[j].buffer =
2069                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2070                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2071                                             skb_list);
2072                         lockdep_set_class(
2073                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2074                                 &qdio_out_skb_queue_key);
2075                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2076                 }
2077         }
2078         return 0;
2079
2080 out_freeoutq:
2081         while (i > 0)
2082                 kfree(card->qdio.out_qs[--i]);
2083         kfree(card->qdio.out_qs);
2084         card->qdio.out_qs = NULL;
2085 out_freepool:
2086         qeth_free_buffer_pool(card);
2087 out_freeinq:
2088         kfree(card->qdio.in_q);
2089         card->qdio.in_q = NULL;
2090 out_nomem:
2091         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2092         return -ENOMEM;
2093 }
2094
2095 static void qeth_create_qib_param_field(struct qeth_card *card,
2096                 char *param_field)
2097 {
2098
2099         param_field[0] = _ascebc['P'];
2100         param_field[1] = _ascebc['C'];
2101         param_field[2] = _ascebc['I'];
2102         param_field[3] = _ascebc['T'];
2103         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2104         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2105         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2106 }
2107
2108 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2109                 char *param_field)
2110 {
2111         param_field[16] = _ascebc['B'];
2112         param_field[17] = _ascebc['L'];
2113         param_field[18] = _ascebc['K'];
2114         param_field[19] = _ascebc['T'];
2115         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2116         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2117         *((unsigned int *) (&param_field[28])) =
2118                 card->info.blkt.inter_packet_jumbo;
2119 }
2120
2121 static int qeth_qdio_activate(struct qeth_card *card)
2122 {
2123         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2124         return qdio_activate(CARD_DDEV(card));
2125 }
2126
2127 static int qeth_dm_act(struct qeth_card *card)
2128 {
2129         int rc;
2130         struct qeth_cmd_buffer *iob;
2131
2132         QETH_DBF_TEXT(SETUP, 2, "dmact");
2133
2134         iob = qeth_wait_for_buffer(&card->write);
2135         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2136
2137         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2138                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2139         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2140                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2141         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2142         return rc;
2143 }
2144
2145 static int qeth_mpc_initialize(struct qeth_card *card)
2146 {
2147         int rc;
2148
2149         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2150
2151         rc = qeth_issue_next_read(card);
2152         if (rc) {
2153                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2154                 return rc;
2155         }
2156         rc = qeth_cm_enable(card);
2157         if (rc) {
2158                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2159                 goto out_qdio;
2160         }
2161         rc = qeth_cm_setup(card);
2162         if (rc) {
2163                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2164                 goto out_qdio;
2165         }
2166         rc = qeth_ulp_enable(card);
2167         if (rc) {
2168                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2169                 goto out_qdio;
2170         }
2171         rc = qeth_ulp_setup(card);
2172         if (rc) {
2173                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2174                 goto out_qdio;
2175         }
2176         rc = qeth_alloc_qdio_buffers(card);
2177         if (rc) {
2178                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2179                 goto out_qdio;
2180         }
2181         rc = qeth_qdio_establish(card);
2182         if (rc) {
2183                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2184                 qeth_free_qdio_buffers(card);
2185                 goto out_qdio;
2186         }
2187         rc = qeth_qdio_activate(card);
2188         if (rc) {
2189                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2190                 goto out_qdio;
2191         }
2192         rc = qeth_dm_act(card);
2193         if (rc) {
2194                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2195                 goto out_qdio;
2196         }
2197
2198         return 0;
2199 out_qdio:
2200         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2201         return rc;
2202 }
2203
2204 static void qeth_print_status_with_portname(struct qeth_card *card)
2205 {
2206         char dbf_text[15];
2207         int i;
2208
2209         sprintf(dbf_text, "%s", card->info.portname + 1);
2210         for (i = 0; i < 8; i++)
2211                 dbf_text[i] =
2212                         (char) _ebcasc[(__u8) dbf_text[i]];
2213         dbf_text[8] = 0;
2214         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2215                "with link type %s (portname: %s)\n",
2216                qeth_get_cardname(card),
2217                (card->info.mcl_level[0]) ? " (level: " : "",
2218                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2219                (card->info.mcl_level[0]) ? ")" : "",
2220                qeth_get_cardname_short(card),
2221                dbf_text);
2222
2223 }
2224
2225 static void qeth_print_status_no_portname(struct qeth_card *card)
2226 {
2227         if (card->info.portname[0])
2228                 dev_info(&card->gdev->dev, "Device is a%s "
2229                        "card%s%s%s\nwith link type %s "
2230                        "(no portname needed by interface).\n",
2231                        qeth_get_cardname(card),
2232                        (card->info.mcl_level[0]) ? " (level: " : "",
2233                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2234                        (card->info.mcl_level[0]) ? ")" : "",
2235                        qeth_get_cardname_short(card));
2236         else
2237                 dev_info(&card->gdev->dev, "Device is a%s "
2238                        "card%s%s%s\nwith link type %s.\n",
2239                        qeth_get_cardname(card),
2240                        (card->info.mcl_level[0]) ? " (level: " : "",
2241                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2242                        (card->info.mcl_level[0]) ? ")" : "",
2243                        qeth_get_cardname_short(card));
2244 }
2245
2246 void qeth_print_status_message(struct qeth_card *card)
2247 {
2248         switch (card->info.type) {
2249         case QETH_CARD_TYPE_OSD:
2250         case QETH_CARD_TYPE_OSM:
2251         case QETH_CARD_TYPE_OSX:
2252                 /* VM will use a non-zero first character
2253                  * to indicate a HiperSockets like reporting
2254                  * of the level OSA sets the first character to zero
2255                  * */
2256                 if (!card->info.mcl_level[0]) {
2257                         sprintf(card->info.mcl_level, "%02x%02x",
2258                                 card->info.mcl_level[2],
2259                                 card->info.mcl_level[3]);
2260
2261                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2262                         break;
2263                 }
2264                 /* fallthrough */
2265         case QETH_CARD_TYPE_IQD:
2266                 if ((card->info.guestlan) ||
2267                     (card->info.mcl_level[0] & 0x80)) {
2268                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2269                                 card->info.mcl_level[0]];
2270                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2271                                 card->info.mcl_level[1]];
2272                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2273                                 card->info.mcl_level[2]];
2274                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2275                                 card->info.mcl_level[3]];
2276                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2277                 }
2278                 break;
2279         default:
2280                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2281         }
2282         if (card->info.portname_required)
2283                 qeth_print_status_with_portname(card);
2284         else
2285                 qeth_print_status_no_portname(card);
2286 }
2287 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2288
2289 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2290 {
2291         struct qeth_buffer_pool_entry *entry;
2292
2293         QETH_CARD_TEXT(card, 5, "inwrklst");
2294
2295         list_for_each_entry(entry,
2296                             &card->qdio.init_pool.entry_list, init_list) {
2297                 qeth_put_buffer_pool_entry(card, entry);
2298         }
2299 }
2300
2301 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2302                 struct qeth_card *card)
2303 {
2304         struct list_head *plh;
2305         struct qeth_buffer_pool_entry *entry;
2306         int i, free;
2307         struct page *page;
2308
2309         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2310                 return NULL;
2311
2312         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2313                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2314                 free = 1;
2315                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2316                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2317                                 free = 0;
2318                                 break;
2319                         }
2320                 }
2321                 if (free) {
2322                         list_del_init(&entry->list);
2323                         return entry;
2324                 }
2325         }
2326
2327         /* no free buffer in pool so take first one and swap pages */
2328         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2329                         struct qeth_buffer_pool_entry, list);
2330         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2331                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2332                         page = alloc_page(GFP_ATOMIC);
2333                         if (!page) {
2334                                 return NULL;
2335                         } else {
2336                                 free_page((unsigned long)entry->elements[i]);
2337                                 entry->elements[i] = page_address(page);
2338                                 if (card->options.performance_stats)
2339                                         card->perf_stats.sg_alloc_page_rx++;
2340                         }
2341                 }
2342         }
2343         list_del_init(&entry->list);
2344         return entry;
2345 }
2346
2347 static int qeth_init_input_buffer(struct qeth_card *card,
2348                 struct qeth_qdio_buffer *buf)
2349 {
2350         struct qeth_buffer_pool_entry *pool_entry;
2351         int i;
2352
2353         pool_entry = qeth_find_free_buffer_pool_entry(card);
2354         if (!pool_entry)
2355                 return 1;
2356
2357         /*
2358          * since the buffer is accessed only from the input_tasklet
2359          * there shouldn't be a need to synchronize; also, since we use
2360          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2361          * buffers
2362          */
2363
2364         buf->pool_entry = pool_entry;
2365         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2366                 buf->buffer->element[i].length = PAGE_SIZE;
2367                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2368                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2369                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2370                 else
2371                         buf->buffer->element[i].flags = 0;
2372         }
2373         return 0;
2374 }
2375
2376 int qeth_init_qdio_queues(struct qeth_card *card)
2377 {
2378         int i, j;
2379         int rc;
2380
2381         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2382
2383         /* inbound queue */
2384         memset(card->qdio.in_q->qdio_bufs, 0,
2385                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2386         qeth_initialize_working_pool_list(card);
2387         /*give only as many buffers to hardware as we have buffer pool entries*/
2388         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2389                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2390         card->qdio.in_q->next_buf_to_init =
2391                 card->qdio.in_buf_pool.buf_count - 1;
2392         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2393                      card->qdio.in_buf_pool.buf_count - 1);
2394         if (rc) {
2395                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2396                 return rc;
2397         }
2398         /* outbound queue */
2399         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2400                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2401                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2402                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2403                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2404                                         &card->qdio.out_qs[i]->bufs[j]);
2405                 }
2406                 card->qdio.out_qs[i]->card = card;
2407                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2408                 card->qdio.out_qs[i]->do_pack = 0;
2409                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2410                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2411                 atomic_set(&card->qdio.out_qs[i]->state,
2412                            QETH_OUT_Q_UNLOCKED);
2413         }
2414         return 0;
2415 }
2416 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2417
2418 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2419 {
2420         switch (link_type) {
2421         case QETH_LINK_TYPE_HSTR:
2422                 return 2;
2423         default:
2424                 return 1;
2425         }
2426 }
2427
2428 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2429                 struct qeth_ipa_cmd *cmd, __u8 command,
2430                 enum qeth_prot_versions prot)
2431 {
2432         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2433         cmd->hdr.command = command;
2434         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2435         cmd->hdr.seqno = card->seqno.ipa;
2436         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2437         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2438         if (card->options.layer2)
2439                 cmd->hdr.prim_version_no = 2;
2440         else
2441                 cmd->hdr.prim_version_no = 1;
2442         cmd->hdr.param_count = 1;
2443         cmd->hdr.prot_version = prot;
2444         cmd->hdr.ipa_supported = 0;
2445         cmd->hdr.ipa_enabled = 0;
2446 }
2447
2448 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2449                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2450 {
2451         struct qeth_cmd_buffer *iob;
2452         struct qeth_ipa_cmd *cmd;
2453
2454         iob = qeth_wait_for_buffer(&card->write);
2455         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2456         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2457
2458         return iob;
2459 }
2460 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2461
2462 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2463                 char prot_type)
2464 {
2465         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2466         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2467         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2468                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2469 }
2470 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2471
2472 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2473                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2474                         unsigned long),
2475                 void *reply_param)
2476 {
2477         int rc;
2478         char prot_type;
2479
2480         QETH_CARD_TEXT(card, 4, "sendipa");
2481
2482         if (card->options.layer2)
2483                 if (card->info.type == QETH_CARD_TYPE_OSN)
2484                         prot_type = QETH_PROT_OSN2;
2485                 else
2486                         prot_type = QETH_PROT_LAYER2;
2487         else
2488                 prot_type = QETH_PROT_TCPIP;
2489         qeth_prepare_ipa_cmd(card, iob, prot_type);
2490         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2491                                                 iob, reply_cb, reply_param);
2492         return rc;
2493 }
2494 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2495
2496 static int qeth_send_startstoplan(struct qeth_card *card,
2497                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2498 {
2499         int rc;
2500         struct qeth_cmd_buffer *iob;
2501
2502         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2503         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2504
2505         return rc;
2506 }
2507
2508 int qeth_send_startlan(struct qeth_card *card)
2509 {
2510         int rc;
2511
2512         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2513
2514         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2515         return rc;
2516 }
2517 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2518
2519 int qeth_send_stoplan(struct qeth_card *card)
2520 {
2521         int rc = 0;
2522
2523         /*
2524          * TODO: according to the IPA format document page 14,
2525          * TCP/IP (we!) never issue a STOPLAN
2526          * is this right ?!?
2527          */
2528         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2529
2530         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2531         return rc;
2532 }
2533 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2534
2535 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2536                 struct qeth_reply *reply, unsigned long data)
2537 {
2538         struct qeth_ipa_cmd *cmd;
2539
2540         QETH_CARD_TEXT(card, 4, "defadpcb");
2541
2542         cmd = (struct qeth_ipa_cmd *) data;
2543         if (cmd->hdr.return_code == 0)
2544                 cmd->hdr.return_code =
2545                         cmd->data.setadapterparms.hdr.return_code;
2546         return 0;
2547 }
2548 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2549
2550 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2551                 struct qeth_reply *reply, unsigned long data)
2552 {
2553         struct qeth_ipa_cmd *cmd;
2554
2555         QETH_CARD_TEXT(card, 3, "quyadpcb");
2556
2557         cmd = (struct qeth_ipa_cmd *) data;
2558         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2559                 card->info.link_type =
2560                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2561                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2562         }
2563         card->options.adp.supported_funcs =
2564                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2565         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2566 }
2567
2568 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2569                 __u32 command, __u32 cmdlen)
2570 {
2571         struct qeth_cmd_buffer *iob;
2572         struct qeth_ipa_cmd *cmd;
2573
2574         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2575                                      QETH_PROT_IPV4);
2576         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2577         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2578         cmd->data.setadapterparms.hdr.command_code = command;
2579         cmd->data.setadapterparms.hdr.used_total = 1;
2580         cmd->data.setadapterparms.hdr.seq_no = 1;
2581
2582         return iob;
2583 }
2584 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2585
2586 int qeth_query_setadapterparms(struct qeth_card *card)
2587 {
2588         int rc;
2589         struct qeth_cmd_buffer *iob;
2590
2591         QETH_CARD_TEXT(card, 3, "queryadp");
2592         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2593                                    sizeof(struct qeth_ipacmd_setadpparms));
2594         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2595         return rc;
2596 }
2597 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2598
2599 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2600                 unsigned int qdio_error, const char *dbftext)
2601 {
2602         if (qdio_error) {
2603                 QETH_CARD_TEXT(card, 2, dbftext);
2604                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2605                                buf->element[15].flags & 0xff);
2606                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2607                                buf->element[14].flags & 0xff);
2608                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2609                 if ((buf->element[15].flags & 0xff) == 0x12) {
2610                         card->stats.rx_dropped++;
2611                         return 0;
2612                 } else
2613                         return 1;
2614         }
2615         return 0;
2616 }
2617 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2618
2619 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2620 {
2621         struct qeth_qdio_q *queue = card->qdio.in_q;
2622         int count;
2623         int i;
2624         int rc;
2625         int newcount = 0;
2626
2627         count = (index < queue->next_buf_to_init)?
2628                 card->qdio.in_buf_pool.buf_count -
2629                 (queue->next_buf_to_init - index) :
2630                 card->qdio.in_buf_pool.buf_count -
2631                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2632         /* only requeue at a certain threshold to avoid SIGAs */
2633         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2634                 for (i = queue->next_buf_to_init;
2635                      i < queue->next_buf_to_init + count; ++i) {
2636                         if (qeth_init_input_buffer(card,
2637                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2638                                 break;
2639                         } else {
2640                                 newcount++;
2641                         }
2642                 }
2643
2644                 if (newcount < count) {
2645                         /* we are in memory shortage so we switch back to
2646                            traditional skb allocation and drop packages */
2647                         atomic_set(&card->force_alloc_skb, 3);
2648                         count = newcount;
2649                 } else {
2650                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2651                 }
2652
2653                 /*
2654                  * according to old code it should be avoided to requeue all
2655                  * 128 buffers in order to benefit from PCI avoidance.
2656                  * this function keeps at least one buffer (the buffer at
2657                  * 'index') un-requeued -> this buffer is the first buffer that
2658                  * will be requeued the next time
2659                  */
2660                 if (card->options.performance_stats) {
2661                         card->perf_stats.inbound_do_qdio_cnt++;
2662                         card->perf_stats.inbound_do_qdio_start_time =
2663                                 qeth_get_micros();
2664                 }
2665                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2666                              queue->next_buf_to_init, count);
2667                 if (card->options.performance_stats)
2668                         card->perf_stats.inbound_do_qdio_time +=
2669                                 qeth_get_micros() -
2670                                 card->perf_stats.inbound_do_qdio_start_time;
2671                 if (rc) {
2672                         dev_warn(&card->gdev->dev,
2673                                 "QDIO reported an error, rc=%i\n", rc);
2674                         QETH_CARD_TEXT(card, 2, "qinberr");
2675                 }
2676                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2677                                           QDIO_MAX_BUFFERS_PER_Q;
2678         }
2679 }
2680 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2681
2682 static int qeth_handle_send_error(struct qeth_card *card,
2683                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2684 {
2685         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2686
2687         QETH_CARD_TEXT(card, 6, "hdsnderr");
2688         if (card->info.type == QETH_CARD_TYPE_IQD) {
2689                 if (sbalf15 == 0) {
2690                         qdio_err = 0;
2691                 } else {
2692                         qdio_err = 1;
2693                 }
2694         }
2695         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2696
2697         if (!qdio_err)
2698                 return QETH_SEND_ERROR_NONE;
2699
2700         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2701                 return QETH_SEND_ERROR_RETRY;
2702
2703         QETH_CARD_TEXT(card, 1, "lnkfail");
2704         QETH_CARD_TEXT_(card, 1, "%04x %02x",
2705                        (u16)qdio_err, (u8)sbalf15);
2706         return QETH_SEND_ERROR_LINK_FAILURE;
2707 }
2708
2709 /*
2710  * Switched to packing state if the number of used buffers on a queue
2711  * reaches a certain limit.
2712  */
2713 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2714 {
2715         if (!queue->do_pack) {
2716                 if (atomic_read(&queue->used_buffers)
2717                     >= QETH_HIGH_WATERMARK_PACK){
2718                         /* switch non-PACKING -> PACKING */
2719                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
2720                         if (queue->card->options.performance_stats)
2721                                 queue->card->perf_stats.sc_dp_p++;
2722                         queue->do_pack = 1;
2723                 }
2724         }
2725 }
2726
2727 /*
2728  * Switches from packing to non-packing mode. If there is a packing
2729  * buffer on the queue this buffer will be prepared to be flushed.
2730  * In that case 1 is returned to inform the caller. If no buffer
2731  * has to be flushed, zero is returned.
2732  */
2733 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2734 {
2735         struct qeth_qdio_out_buffer *buffer;
2736         int flush_count = 0;
2737
2738         if (queue->do_pack) {
2739                 if (atomic_read(&queue->used_buffers)
2740                     <= QETH_LOW_WATERMARK_PACK) {
2741                         /* switch PACKING -> non-PACKING */
2742                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
2743                         if (queue->card->options.performance_stats)
2744                                 queue->card->perf_stats.sc_p_dp++;
2745                         queue->do_pack = 0;
2746                         /* flush packing buffers */
2747                         buffer = &queue->bufs[queue->next_buf_to_fill];
2748                         if ((atomic_read(&buffer->state) ==
2749                                                 QETH_QDIO_BUF_EMPTY) &&
2750                             (buffer->next_element_to_fill > 0)) {
2751                                 atomic_set(&buffer->state,
2752                                                 QETH_QDIO_BUF_PRIMED);
2753                                 flush_count++;
2754                                 queue->next_buf_to_fill =
2755                                         (queue->next_buf_to_fill + 1) %
2756                                         QDIO_MAX_BUFFERS_PER_Q;
2757                         }
2758                 }
2759         }
2760         return flush_count;
2761 }
2762
2763 /*
2764  * Called to flush a packing buffer if no more pci flags are on the queue.
2765  * Checks if there is a packing buffer and prepares it to be flushed.
2766  * In that case returns 1, otherwise zero.
2767  */
2768 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2769 {
2770         struct qeth_qdio_out_buffer *buffer;
2771
2772         buffer = &queue->bufs[queue->next_buf_to_fill];
2773         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2774            (buffer->next_element_to_fill > 0)) {
2775                 /* it's a packing buffer */
2776                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2777                 queue->next_buf_to_fill =
2778                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2779                 return 1;
2780         }
2781         return 0;
2782 }
2783
2784 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2785                                int count)
2786 {
2787         struct qeth_qdio_out_buffer *buf;
2788         int rc;
2789         int i;
2790         unsigned int qdio_flags;
2791
2792         for (i = index; i < index + count; ++i) {
2793                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2794                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2795                                 SBAL_FLAGS_LAST_ENTRY;
2796
2797                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2798                         continue;
2799
2800                 if (!queue->do_pack) {
2801                         if ((atomic_read(&queue->used_buffers) >=
2802                                 (QETH_HIGH_WATERMARK_PACK -
2803                                  QETH_WATERMARK_PACK_FUZZ)) &&
2804                             !atomic_read(&queue->set_pci_flags_count)) {
2805                                 /* it's likely that we'll go to packing
2806                                  * mode soon */
2807                                 atomic_inc(&queue->set_pci_flags_count);
2808                                 buf->buffer->element[0].flags |= 0x40;
2809                         }
2810                 } else {
2811                         if (!atomic_read(&queue->set_pci_flags_count)) {
2812                                 /*
2813                                  * there's no outstanding PCI any more, so we
2814                                  * have to request a PCI to be sure the the PCI
2815                                  * will wake at some time in the future then we
2816                                  * can flush packed buffers that might still be
2817                                  * hanging around, which can happen if no
2818                                  * further send was requested by the stack
2819                                  */
2820                                 atomic_inc(&queue->set_pci_flags_count);
2821                                 buf->buffer->element[0].flags |= 0x40;
2822                         }
2823                 }
2824         }
2825
2826         queue->sync_iqdio_error = 0;
2827         queue->card->dev->trans_start = jiffies;
2828         if (queue->card->options.performance_stats) {
2829                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2830                 queue->card->perf_stats.outbound_do_qdio_start_time =
2831                         qeth_get_micros();
2832         }
2833         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2834         if (atomic_read(&queue->set_pci_flags_count))
2835                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2836         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2837                      queue->queue_no, index, count);
2838         if (queue->card->options.performance_stats)
2839                 queue->card->perf_stats.outbound_do_qdio_time +=
2840                         qeth_get_micros() -
2841                         queue->card->perf_stats.outbound_do_qdio_start_time;
2842         if (rc > 0) {
2843                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2844                         queue->sync_iqdio_error = rc & 3;
2845         }
2846         if (rc) {
2847                 queue->card->stats.tx_errors += count;
2848                 /* ignore temporary SIGA errors without busy condition */
2849                 if (rc == QDIO_ERROR_SIGA_TARGET)
2850                         return;
2851                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2852                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2853
2854                 /* this must not happen under normal circumstances. if it
2855                  * happens something is really wrong -> recover */
2856                 qeth_schedule_recovery(queue->card);
2857                 return;
2858         }
2859         atomic_add(count, &queue->used_buffers);
2860         if (queue->card->options.performance_stats)
2861                 queue->card->perf_stats.bufs_sent += count;
2862 }
2863
2864 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2865 {
2866         int index;
2867         int flush_cnt = 0;
2868         int q_was_packing = 0;
2869
2870         /*
2871          * check if weed have to switch to non-packing mode or if
2872          * we have to get a pci flag out on the queue
2873          */
2874         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2875             !atomic_read(&queue->set_pci_flags_count)) {
2876                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2877                                 QETH_OUT_Q_UNLOCKED) {
2878                         /*
2879                          * If we get in here, there was no action in
2880                          * do_send_packet. So, we check if there is a
2881                          * packing buffer to be flushed here.
2882                          */
2883                         netif_stop_queue(queue->card->dev);
2884                         index = queue->next_buf_to_fill;
2885                         q_was_packing = queue->do_pack;
2886                         /* queue->do_pack may change */
2887                         barrier();
2888                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2889                         if (!flush_cnt &&
2890                             !atomic_read(&queue->set_pci_flags_count))
2891                                 flush_cnt +=
2892                                         qeth_flush_buffers_on_no_pci(queue);
2893                         if (queue->card->options.performance_stats &&
2894                             q_was_packing)
2895                                 queue->card->perf_stats.bufs_sent_pack +=
2896                                         flush_cnt;
2897                         if (flush_cnt)
2898                                 qeth_flush_buffers(queue, index, flush_cnt);
2899                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2900                 }
2901         }
2902 }
2903
2904 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2905                 unsigned int qdio_error, int __queue, int first_element,
2906                 int count, unsigned long card_ptr)
2907 {
2908         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2909         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2910         struct qeth_qdio_out_buffer *buffer;
2911         int i;
2912         unsigned qeth_send_err;
2913
2914         QETH_CARD_TEXT(card, 6, "qdouhdl");
2915         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2916                 QETH_CARD_TEXT(card, 2, "achkcond");
2917                 netif_stop_queue(card->dev);
2918                 qeth_schedule_recovery(card);
2919                 return;
2920         }
2921         if (card->options.performance_stats) {
2922                 card->perf_stats.outbound_handler_cnt++;
2923                 card->perf_stats.outbound_handler_start_time =
2924                         qeth_get_micros();
2925         }
2926         for (i = first_element; i < (first_element + count); ++i) {
2927                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2928                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2929                 __qeth_clear_output_buffer(queue, buffer,
2930                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2931         }
2932         atomic_sub(count, &queue->used_buffers);
2933         /* check if we need to do something on this outbound queue */
2934         if (card->info.type != QETH_CARD_TYPE_IQD)
2935                 qeth_check_outbound_queue(queue);
2936
2937         netif_wake_queue(queue->card->dev);
2938         if (card->options.performance_stats)
2939                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2940                         card->perf_stats.outbound_handler_start_time;
2941 }
2942 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2943
2944 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2945                         int ipv, int cast_type)
2946 {
2947         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
2948                      card->info.type == QETH_CARD_TYPE_OSX))
2949                 return card->qdio.default_out_queue;
2950         switch (card->qdio.no_out_queues) {
2951         case 4:
2952                 if (cast_type && card->info.is_multicast_different)
2953                         return card->info.is_multicast_different &
2954                                 (card->qdio.no_out_queues - 1);
2955                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2956                         const u8 tos = ip_hdr(skb)->tos;
2957
2958                         if (card->qdio.do_prio_queueing ==
2959                                 QETH_PRIO_Q_ING_TOS) {
2960                                 if (tos & IP_TOS_NOTIMPORTANT)
2961                                         return 3;
2962                                 if (tos & IP_TOS_HIGHRELIABILITY)
2963                                         return 2;
2964                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
2965                                         return 1;
2966                                 if (tos & IP_TOS_LOWDELAY)
2967                                         return 0;
2968                         }
2969                         if (card->qdio.do_prio_queueing ==
2970                                 QETH_PRIO_Q_ING_PREC)
2971                                 return 3 - (tos >> 6);
2972                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
2973                         /* TODO: IPv6!!! */
2974                 }
2975                 return card->qdio.default_out_queue;
2976         case 1: /* fallthrough for single-out-queue 1920-device */
2977         default:
2978                 return card->qdio.default_out_queue;
2979         }
2980 }
2981 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
2982
2983 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
2984                      struct sk_buff *skb, int elems)
2985 {
2986         int dlen = skb->len - skb->data_len;
2987         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
2988                 PFN_DOWN((unsigned long)skb->data);
2989
2990         elements_needed += skb_shinfo(skb)->nr_frags;
2991         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2992                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
2993                         "(Number=%d / Length=%d). Discarded.\n",
2994                         (elements_needed+elems), skb->len);
2995                 return 0;
2996         }
2997         return elements_needed;
2998 }
2999 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3000
3001 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3002 {
3003         int hroom, inpage, rest;
3004
3005         if (((unsigned long)skb->data & PAGE_MASK) !=
3006             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3007                 hroom = skb_headroom(skb);
3008                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3009                 rest = len - inpage;
3010                 if (rest > hroom)
3011                         return 1;
3012                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3013                 skb->data -= rest;
3014                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3015         }
3016         return 0;
3017 }
3018 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3019
3020 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3021         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3022         int offset)
3023 {
3024         int length = skb->len - skb->data_len;
3025         int length_here;
3026         int element;
3027         char *data;
3028         int first_lap, cnt;
3029         struct skb_frag_struct *frag;
3030
3031         element = *next_element_to_fill;
3032         data = skb->data;
3033         first_lap = (is_tso == 0 ? 1 : 0);
3034
3035         if (offset >= 0) {
3036                 data = skb->data + offset;
3037                 length -= offset;
3038                 first_lap = 0;
3039         }
3040
3041         while (length > 0) {
3042                 /* length_here is the remaining amount of data in this page */
3043                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3044                 if (length < length_here)
3045                         length_here = length;
3046
3047                 buffer->element[element].addr = data;
3048                 buffer->element[element].length = length_here;
3049                 length -= length_here;
3050                 if (!length) {
3051                         if (first_lap)
3052                                 if (skb_shinfo(skb)->nr_frags)
3053                                         buffer->element[element].flags =
3054                                                 SBAL_FLAGS_FIRST_FRAG;
3055                                 else
3056                                         buffer->element[element].flags = 0;
3057                         else
3058                                 buffer->element[element].flags =
3059                                     SBAL_FLAGS_MIDDLE_FRAG;
3060                 } else {
3061                         if (first_lap)
3062                                 buffer->element[element].flags =
3063                                     SBAL_FLAGS_FIRST_FRAG;
3064                         else
3065                                 buffer->element[element].flags =
3066                                     SBAL_FLAGS_MIDDLE_FRAG;
3067                 }
3068                 data += length_here;
3069                 element++;
3070                 first_lap = 0;
3071         }
3072
3073         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3074                 frag = &skb_shinfo(skb)->frags[cnt];
3075                 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3076                         + frag->page_offset;
3077                 buffer->element[element].length = frag->size;
3078                 buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG;
3079                 element++;
3080         }
3081
3082         if (buffer->element[element - 1].flags)
3083                 buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG;
3084         *next_element_to_fill = element;
3085 }
3086
3087 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3088                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3089                 struct qeth_hdr *hdr, int offset, int hd_len)
3090 {
3091         struct qdio_buffer *buffer;
3092         int flush_cnt = 0, hdr_len, large_send = 0;
3093
3094         buffer = buf->buffer;
3095         atomic_inc(&skb->users);
3096         skb_queue_tail(&buf->skb_list, skb);
3097
3098         /*check first on TSO ....*/
3099         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3100                 int element = buf->next_element_to_fill;
3101
3102                 hdr_len = sizeof(struct qeth_hdr_tso) +
3103                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3104                 /*fill first buffer entry only with header information */
3105                 buffer->element[element].addr = skb->data;
3106                 buffer->element[element].length = hdr_len;
3107                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3108                 buf->next_element_to_fill++;
3109                 skb->data += hdr_len;
3110                 skb->len  -= hdr_len;
3111                 large_send = 1;
3112         }
3113
3114         if (offset >= 0) {
3115                 int element = buf->next_element_to_fill;
3116                 buffer->element[element].addr = hdr;
3117                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3118                                                         hd_len;
3119                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3120                 buf->is_header[element] = 1;
3121                 buf->next_element_to_fill++;
3122         }
3123
3124         __qeth_fill_buffer(skb, buffer, large_send,
3125                 (int *)&buf->next_element_to_fill, offset);
3126
3127         if (!queue->do_pack) {
3128                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3129                 /* set state to PRIMED -> will be flushed */
3130                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3131                 flush_cnt = 1;
3132         } else {
3133                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3134                 if (queue->card->options.performance_stats)
3135                         queue->card->perf_stats.skbs_sent_pack++;
3136                 if (buf->next_element_to_fill >=
3137                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3138                         /*
3139                          * packed buffer if full -> set state PRIMED
3140                          * -> will be flushed
3141                          */
3142                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3143                         flush_cnt = 1;
3144                 }
3145         }
3146         return flush_cnt;
3147 }
3148
3149 int qeth_do_send_packet_fast(struct qeth_card *card,
3150                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3151                 struct qeth_hdr *hdr, int elements_needed,
3152                 int offset, int hd_len)
3153 {
3154         struct qeth_qdio_out_buffer *buffer;
3155         struct sk_buff *skb1;
3156         struct qeth_skb_data *retry_ctrl;
3157         int index;
3158         int rc;
3159
3160         /* spin until we get the queue ... */
3161         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3162                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3163         /* ... now we've got the queue */
3164         index = queue->next_buf_to_fill;
3165         buffer = &queue->bufs[queue->next_buf_to_fill];
3166         /*
3167          * check if buffer is empty to make sure that we do not 'overtake'
3168          * ourselves and try to fill a buffer that is already primed
3169          */
3170         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3171                 goto out;
3172         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3173                                           QDIO_MAX_BUFFERS_PER_Q;
3174         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3175         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3176         qeth_flush_buffers(queue, index, 1);
3177         if (queue->sync_iqdio_error == 2) {
3178                 skb1 = skb_dequeue(&buffer->skb_list);
3179                 while (skb1) {
3180                         atomic_dec(&skb1->users);
3181                         skb1 = skb_dequeue(&buffer->skb_list);
3182                 }
3183                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3184                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3185                         retry_ctrl->magic = QETH_SKB_MAGIC;
3186                         retry_ctrl->count = 0;
3187                 }
3188                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3189                         retry_ctrl->count++;
3190                         rc = dev_queue_xmit(skb);
3191                 } else {
3192                         dev_kfree_skb_any(skb);
3193                         QETH_CARD_TEXT(card, 2, "qrdrop");
3194                 }
3195         }
3196         return 0;
3197 out:
3198         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3199         return -EBUSY;
3200 }
3201 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3202
3203 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3204                 struct sk_buff *skb, struct qeth_hdr *hdr,
3205                 int elements_needed)
3206 {
3207         struct qeth_qdio_out_buffer *buffer;
3208         int start_index;
3209         int flush_count = 0;
3210         int do_pack = 0;
3211         int tmp;
3212         int rc = 0;
3213
3214         /* spin until we get the queue ... */
3215         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3216                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3217         start_index = queue->next_buf_to_fill;
3218         buffer = &queue->bufs[queue->next_buf_to_fill];
3219         /*
3220          * check if buffer is empty to make sure that we do not 'overtake'
3221          * ourselves and try to fill a buffer that is already primed
3222          */
3223         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3224                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3225                 return -EBUSY;
3226         }
3227         /* check if we need to switch packing state of this queue */
3228         qeth_switch_to_packing_if_needed(queue);
3229         if (queue->do_pack) {
3230                 do_pack = 1;
3231                 /* does packet fit in current buffer? */
3232                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3233                     buffer->next_element_to_fill) < elements_needed) {
3234                         /* ... no -> set state PRIMED */
3235                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3236                         flush_count++;
3237                         queue->next_buf_to_fill =
3238                                 (queue->next_buf_to_fill + 1) %
3239                                 QDIO_MAX_BUFFERS_PER_Q;
3240                         buffer = &queue->bufs[queue->next_buf_to_fill];
3241                         /* we did a step forward, so check buffer state
3242                          * again */
3243                         if (atomic_read(&buffer->state) !=
3244                             QETH_QDIO_BUF_EMPTY) {
3245                                 qeth_flush_buffers(queue, start_index,
3246                                                            flush_count);
3247                                 atomic_set(&queue->state,
3248                                                 QETH_OUT_Q_UNLOCKED);
3249                                 return -EBUSY;
3250                         }
3251                 }
3252         }
3253         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3254         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3255                                   QDIO_MAX_BUFFERS_PER_Q;
3256         flush_count += tmp;
3257         if (flush_count)
3258                 qeth_flush_buffers(queue, start_index, flush_count);
3259         else if (!atomic_read(&queue->set_pci_flags_count))
3260                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3261         /*
3262          * queue->state will go from LOCKED -> UNLOCKED or from
3263          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3264          * (switch packing state or flush buffer to get another pci flag out).
3265          * In that case we will enter this loop
3266          */
3267         while (atomic_dec_return(&queue->state)) {
3268                 flush_count = 0;
3269                 start_index = queue->next_buf_to_fill;
3270                 /* check if we can go back to non-packing state */
3271                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3272                 /*
3273                  * check if we need to flush a packing buffer to get a pci
3274                  * flag out on the queue
3275                  */
3276                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3277                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3278                 if (flush_count)
3279                         qeth_flush_buffers(queue, start_index, flush_count);
3280         }
3281         /* at this point the queue is UNLOCKED again */
3282         if (queue->card->options.performance_stats && do_pack)
3283                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3284
3285         return rc;
3286 }
3287 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3288
3289 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3290                 struct qeth_reply *reply, unsigned long data)
3291 {
3292         struct qeth_ipa_cmd *cmd;
3293         struct qeth_ipacmd_setadpparms *setparms;
3294
3295         QETH_CARD_TEXT(card, 4, "prmadpcb");
3296
3297         cmd = (struct qeth_ipa_cmd *) data;
3298         setparms = &(cmd->data.setadapterparms);
3299
3300         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3301         if (cmd->hdr.return_code) {
3302                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3303                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3304         }
3305         card->info.promisc_mode = setparms->data.mode;
3306         return 0;
3307 }
3308
3309 void qeth_setadp_promisc_mode(struct qeth_card *card)
3310 {
3311         enum qeth_ipa_promisc_modes mode;
3312         struct net_device *dev = card->dev;
3313         struct qeth_cmd_buffer *iob;
3314         struct qeth_ipa_cmd *cmd;
3315
3316         QETH_CARD_TEXT(card, 4, "setprom");
3317
3318         if (((dev->flags & IFF_PROMISC) &&
3319              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3320             (!(dev->flags & IFF_PROMISC) &&
3321              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3322                 return;
3323         mode = SET_PROMISC_MODE_OFF;
3324         if (dev->flags & IFF_PROMISC)
3325                 mode = SET_PROMISC_MODE_ON;
3326         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3327
3328         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3329                         sizeof(struct qeth_ipacmd_setadpparms));
3330         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3331         cmd->data.setadapterparms.data.mode = mode;
3332         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3333 }
3334 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3335
3336 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3337 {
3338         struct qeth_card *card;
3339         char dbf_text[15];
3340
3341         card = dev->ml_priv;
3342
3343         QETH_CARD_TEXT(card, 4, "chgmtu");
3344         sprintf(dbf_text, "%8x", new_mtu);
3345         QETH_CARD_TEXT(card, 4, dbf_text);
3346
3347         if (new_mtu < 64)
3348                 return -EINVAL;
3349         if (new_mtu > 65535)
3350                 return -EINVAL;
3351         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3352             (!qeth_mtu_is_valid(card, new_mtu)))
3353                 return -EINVAL;
3354         dev->mtu = new_mtu;
3355         return 0;
3356 }
3357 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3358
3359 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3360 {
3361         struct qeth_card *card;
3362
3363         card = dev->ml_priv;
3364
3365         QETH_CARD_TEXT(card, 5, "getstat");
3366
3367         return &card->stats;
3368 }
3369 EXPORT_SYMBOL_GPL(qeth_get_stats);
3370
3371 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3372                 struct qeth_reply *reply, unsigned long data)
3373 {
3374         struct qeth_ipa_cmd *cmd;
3375
3376         QETH_CARD_TEXT(card, 4, "chgmaccb");
3377
3378         cmd = (struct qeth_ipa_cmd *) data;
3379         if (!card->options.layer2 ||
3380             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3381                 memcpy(card->dev->dev_addr,
3382                        &cmd->data.setadapterparms.data.change_addr.addr,
3383                        OSA_ADDR_LEN);
3384                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3385         }
3386         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3387         return 0;
3388 }
3389
3390 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3391 {
3392         int rc;
3393         struct qeth_cmd_buffer *iob;
3394         struct qeth_ipa_cmd *cmd;
3395
3396         QETH_CARD_TEXT(card, 4, "chgmac");
3397
3398         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3399                                    sizeof(struct qeth_ipacmd_setadpparms));
3400         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3401         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3402         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3403         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3404                card->dev->dev_addr, OSA_ADDR_LEN);
3405         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3406                                NULL);
3407         return rc;
3408 }
3409 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3410
3411 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3412                 struct qeth_reply *reply, unsigned long data)
3413 {
3414         struct qeth_ipa_cmd *cmd;
3415         struct qeth_set_access_ctrl *access_ctrl_req;
3416         int rc;
3417
3418         QETH_CARD_TEXT(card, 4, "setaccb");
3419
3420         cmd = (struct qeth_ipa_cmd *) data;
3421         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3422         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3423         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3424         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3425                 cmd->data.setadapterparms.hdr.return_code);
3426         switch (cmd->data.setadapterparms.hdr.return_code) {
3427         case SET_ACCESS_CTRL_RC_SUCCESS:
3428         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3429         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3430         {
3431                 card->options.isolation = access_ctrl_req->subcmd_code;
3432                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3433                         dev_info(&card->gdev->dev,
3434                             "QDIO data connection isolation is deactivated\n");
3435                 } else {
3436                         dev_info(&card->gdev->dev,
3437                             "QDIO data connection isolation is activated\n");
3438                 }
3439                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3440                         card->gdev->dev.kobj.name,
3441                         access_ctrl_req->subcmd_code,
3442                         cmd->data.setadapterparms.hdr.return_code);
3443                 rc = 0;
3444                 break;
3445         }
3446         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3447         {
3448                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3449                         card->gdev->dev.kobj.name,
3450                         access_ctrl_req->subcmd_code,
3451                         cmd->data.setadapterparms.hdr.return_code);
3452                 dev_err(&card->gdev->dev, "Adapter does not "
3453                         "support QDIO data connection isolation\n");
3454
3455                 /* ensure isolation mode is "none" */
3456                 card->options.isolation = ISOLATION_MODE_NONE;
3457                 rc = -EOPNOTSUPP;
3458                 break;
3459         }
3460         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3461         {
3462                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3463                         card->gdev->dev.kobj.name,
3464                         access_ctrl_req->subcmd_code,
3465                         cmd->data.setadapterparms.hdr.return_code);
3466                 dev_err(&card->gdev->dev,
3467                         "Adapter is dedicated. "
3468                         "QDIO data connection isolation not supported\n");
3469
3470                 /* ensure isolation mode is "none" */
3471                 card->options.isolation = ISOLATION_MODE_NONE;
3472                 rc = -EOPNOTSUPP;
3473                 break;
3474         }
3475         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3476         {
3477                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3478                         card->gdev->dev.kobj.name,
3479                         access_ctrl_req->subcmd_code,
3480                         cmd->data.setadapterparms.hdr.return_code);
3481                 dev_err(&card->gdev->dev,
3482                         "TSO does not permit QDIO data connection isolation\n");
3483
3484                 /* ensure isolation mode is "none" */
3485                 card->options.isolation = ISOLATION_MODE_NONE;
3486                 rc = -EPERM;
3487                 break;
3488         }
3489         default:
3490         {
3491                 /* this should never happen */
3492                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3493                         "==UNKNOWN\n",
3494                         card->gdev->dev.kobj.name,
3495                         access_ctrl_req->subcmd_code,
3496                         cmd->data.setadapterparms.hdr.return_code);
3497
3498                 /* ensure isolation mode is "none" */
3499                 card->options.isolation = ISOLATION_MODE_NONE;
3500                 rc = 0;
3501                 break;
3502         }
3503         }
3504         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3505         return rc;
3506 }
3507
3508 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3509                 enum qeth_ipa_isolation_modes isolation)
3510 {
3511         int rc;
3512         struct qeth_cmd_buffer *iob;
3513         struct qeth_ipa_cmd *cmd;
3514         struct qeth_set_access_ctrl *access_ctrl_req;
3515
3516         QETH_CARD_TEXT(card, 4, "setacctl");
3517
3518         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3519         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3520
3521         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3522                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3523                                    sizeof(struct qeth_set_access_ctrl));
3524         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3525         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3526         access_ctrl_req->subcmd_code = isolation;
3527
3528         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3529                                NULL);
3530         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3531         return rc;
3532 }
3533
3534 int qeth_set_access_ctrl_online(struct qeth_card *card)
3535 {
3536         int rc = 0;
3537
3538         QETH_CARD_TEXT(card, 4, "setactlo");
3539
3540         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3541              card->info.type == QETH_CARD_TYPE_OSX) &&
3542              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3543                 rc = qeth_setadpparms_set_access_ctrl(card,
3544                         card->options.isolation);
3545                 if (rc) {
3546                         QETH_DBF_MESSAGE(3,
3547                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3548                                 card->gdev->dev.kobj.name,
3549                                 rc);
3550                 }
3551         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3552                 card->options.isolation = ISOLATION_MODE_NONE;
3553
3554                 dev_err(&card->gdev->dev, "Adapter does not "
3555                         "support QDIO data connection isolation\n");
3556                 rc = -EOPNOTSUPP;
3557         }
3558         return rc;
3559 }
3560 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3561
3562 void qeth_tx_timeout(struct net_device *dev)
3563 {
3564         struct qeth_card *card;
3565
3566         card = dev->ml_priv;
3567         QETH_CARD_TEXT(card, 4, "txtimeo");
3568         card->stats.tx_errors++;
3569         qeth_schedule_recovery(card);
3570 }
3571 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3572
3573 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3574 {
3575         struct qeth_card *card = dev->ml_priv;
3576         int rc = 0;
3577
3578         switch (regnum) {
3579         case MII_BMCR: /* Basic mode control register */
3580                 rc = BMCR_FULLDPLX;
3581                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3582                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3583                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3584                         rc |= BMCR_SPEED100;
3585                 break;
3586         case MII_BMSR: /* Basic mode status register */
3587                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3588                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3589                      BMSR_100BASE4;
3590                 break;
3591         case MII_PHYSID1: /* PHYS ID 1 */
3592                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3593                      dev->dev_addr[2];
3594                 rc = (rc >> 5) & 0xFFFF;
3595                 break;
3596         case MII_PHYSID2: /* PHYS ID 2 */
3597                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3598                 break;
3599         case MII_ADVERTISE: /* Advertisement control reg */
3600                 rc = ADVERTISE_ALL;
3601                 break;
3602         case MII_LPA: /* Link partner ability reg */
3603                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3604                      LPA_100BASE4 | LPA_LPACK;
3605                 break;
3606         case MII_EXPANSION: /* Expansion register */
3607                 break;
3608         case MII_DCOUNTER: /* disconnect counter */
3609                 break;
3610         case MII_FCSCOUNTER: /* false carrier counter */
3611                 break;
3612         case MII_NWAYTEST: /* N-way auto-neg test register */
3613                 break;
3614         case MII_RERRCOUNTER: /* rx error counter */
3615                 rc = card->stats.rx_errors;
3616                 break;
3617         case MII_SREVISION: /* silicon revision */
3618                 break;
3619         case MII_RESV1: /* reserved 1 */
3620                 break;
3621         case MII_LBRERROR: /* loopback, rx, bypass error */
3622                 break;
3623         case MII_PHYADDR: /* physical address */
3624                 break;
3625         case MII_RESV2: /* reserved 2 */
3626                 break;
3627         case MII_TPISTATUS: /* TPI status for 10mbps */
3628                 break;
3629         case MII_NCONFIG: /* network interface config */
3630                 break;
3631         default:
3632                 break;
3633         }
3634         return rc;
3635 }
3636 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3637
3638 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3639                 struct qeth_cmd_buffer *iob, int len,
3640                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3641                         unsigned long),
3642                 void *reply_param)
3643 {
3644         u16 s1, s2;
3645
3646         QETH_CARD_TEXT(card, 4, "sendsnmp");
3647
3648         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3649         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3650                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3651         /* adjust PDU length fields in IPA_PDU_HEADER */
3652         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3653         s2 = (u32) len;
3654         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3655         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3656         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3657         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3658         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3659                                       reply_cb, reply_param);
3660 }
3661
3662 static int qeth_snmp_command_cb(struct qeth_card *card,
3663                 struct qeth_reply *reply, unsigned long sdata)
3664 {
3665         struct qeth_ipa_cmd *cmd;
3666         struct qeth_arp_query_info *qinfo;
3667         struct qeth_snmp_cmd *snmp;
3668         unsigned char *data;
3669         __u16 data_len;
3670
3671         QETH_CARD_TEXT(card, 3, "snpcmdcb");
3672
3673         cmd = (struct qeth_ipa_cmd *) sdata;
3674         data = (unsigned char *)((char *)cmd - reply->offset);
3675         qinfo = (struct qeth_arp_query_info *) reply->param;
3676         snmp = &cmd->data.setadapterparms.data.snmp;
3677
3678         if (cmd->hdr.return_code) {
3679                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3680                 return 0;
3681         }
3682         if (cmd->data.setadapterparms.hdr.return_code) {
3683                 cmd->hdr.return_code =
3684                         cmd->data.setadapterparms.hdr.return_code;
3685                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3686                 return 0;
3687         }
3688         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3689         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3690                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3691         else
3692                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3693
3694         /* check if there is enough room in userspace */
3695         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3696                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3697                 cmd->hdr.return_code = -ENOMEM;
3698                 return 0;
3699         }
3700         QETH_CARD_TEXT_(card, 4, "snore%i",
3701                        cmd->data.setadapterparms.hdr.used_total);
3702         QETH_CARD_TEXT_(card, 4, "sseqn%i",
3703                 cmd->data.setadapterparms.hdr.seq_no);
3704         /*copy entries to user buffer*/
3705         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3706                 memcpy(qinfo->udata + qinfo->udata_offset,
3707                        (char *)snmp,
3708                        data_len + offsetof(struct qeth_snmp_cmd, data));
3709                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3710         } else {
3711                 memcpy(qinfo->udata + qinfo->udata_offset,
3712                        (char *)&snmp->request, data_len);
3713         }
3714         qinfo->udata_offset += data_len;
3715         /* check if all replies received ... */
3716                 QETH_CARD_TEXT_(card, 4, "srtot%i",
3717                                cmd->data.setadapterparms.hdr.used_total);
3718                 QETH_CARD_TEXT_(card, 4, "srseq%i",
3719                                cmd->data.setadapterparms.hdr.seq_no);
3720         if (cmd->data.setadapterparms.hdr.seq_no <
3721             cmd->data.setadapterparms.hdr.used_total)
3722                 return 1;
3723         return 0;
3724 }
3725
3726 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3727 {
3728         struct qeth_cmd_buffer *iob;
3729         struct qeth_ipa_cmd *cmd;
3730         struct qeth_snmp_ureq *ureq;
3731         int req_len;
3732         struct qeth_arp_query_info qinfo = {0, };
3733         int rc = 0;
3734
3735         QETH_CARD_TEXT(card, 3, "snmpcmd");
3736
3737         if (card->info.guestlan)
3738                 return -EOPNOTSUPP;
3739
3740         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3741             (!card->options.layer2)) {
3742                 return -EOPNOTSUPP;
3743         }
3744         /* skip 4 bytes (data_len struct member) to get req_len */
3745         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3746                 return -EFAULT;
3747         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3748         if (!ureq) {
3749                 QETH_CARD_TEXT(card, 2, "snmpnome");
3750                 return -ENOMEM;
3751         }
3752         if (copy_from_user(ureq, udata,
3753                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3754                 kfree(ureq);
3755                 return -EFAULT;
3756         }
3757         qinfo.udata_len = ureq->hdr.data_len;
3758         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3759         if (!qinfo.udata) {
3760                 kfree(ureq);
3761                 return -ENOMEM;
3762         }
3763         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3764
3765         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3766                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3767         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3768         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3769         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3770                                     qeth_snmp_command_cb, (void *)&qinfo);
3771         if (rc)
3772                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3773                            QETH_CARD_IFNAME(card), rc);
3774         else {
3775                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3776                         rc = -EFAULT;
3777         }
3778
3779         kfree(ureq);
3780         kfree(qinfo.udata);
3781         return rc;
3782 }
3783 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3784
3785 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3786 {
3787         switch (card->info.type) {
3788         case QETH_CARD_TYPE_IQD:
3789                 return 2;
3790         default:
3791                 return 0;
3792         }
3793 }
3794
3795 static int qeth_qdio_establish(struct qeth_card *card)
3796 {
3797         struct qdio_initialize init_data;
3798         char *qib_param_field;
3799         struct qdio_buffer **in_sbal_ptrs;
3800         struct qdio_buffer **out_sbal_ptrs;
3801         int i, j, k;
3802         int rc = 0;
3803
3804         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3805
3806         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3807                               GFP_KERNEL);
3808         if (!qib_param_field)
3809                 return -ENOMEM;
3810
3811         qeth_create_qib_param_field(card, qib_param_field);
3812         qeth_create_qib_param_field_blkt(card, qib_param_field);
3813
3814         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3815                                GFP_KERNEL);
3816         if (!in_sbal_ptrs) {
3817                 kfree(qib_param_field);
3818                 return -ENOMEM;
3819         }
3820         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3821                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3822                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3823
3824         out_sbal_ptrs =
3825                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3826                         sizeof(void *), GFP_KERNEL);
3827         if (!out_sbal_ptrs) {
3828                 kfree(in_sbal_ptrs);
3829                 kfree(qib_param_field);
3830                 return -ENOMEM;
3831         }
3832         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3833                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3834                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3835                                 card->qdio.out_qs[i]->bufs[j].buffer);
3836                 }
3837
3838         memset(&init_data, 0, sizeof(struct qdio_initialize));
3839         init_data.cdev                   = CARD_DDEV(card);
3840         init_data.q_format               = qeth_get_qdio_q_format(card);
3841         init_data.qib_param_field_format = 0;
3842         init_data.qib_param_field        = qib_param_field;
3843         init_data.no_input_qs            = 1;
3844         init_data.no_output_qs           = card->qdio.no_out_queues;
3845         init_data.input_handler          = card->discipline.input_handler;
3846         init_data.output_handler         = card->discipline.output_handler;
3847         init_data.int_parm               = (unsigned long) card;
3848         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3849         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3850
3851         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3852                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3853                 rc = qdio_allocate(&init_data);
3854                 if (rc) {
3855                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3856                         goto out;
3857                 }
3858                 rc = qdio_establish(&init_data);
3859                 if (rc) {
3860                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3861                         qdio_free(CARD_DDEV(card));
3862                 }
3863         }
3864 out:
3865         kfree(out_sbal_ptrs);
3866         kfree(in_sbal_ptrs);
3867         kfree(qib_param_field);
3868         return rc;
3869 }
3870
3871 static void qeth_core_free_card(struct qeth_card *card)
3872 {
3873
3874         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3875         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3876         qeth_clean_channel(&card->read);
3877         qeth_clean_channel(&card->write);
3878         if (card->dev)
3879                 free_netdev(card->dev);
3880         kfree(card->ip_tbd_list);
3881         qeth_free_qdio_buffers(card);
3882         unregister_service_level(&card->qeth_service_level);
3883         kfree(card);
3884 }
3885
3886 static struct ccw_device_id qeth_ids[] = {
3887         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
3888                                         .driver_info = QETH_CARD_TYPE_OSD},
3889         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
3890                                         .driver_info = QETH_CARD_TYPE_IQD},
3891         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
3892                                         .driver_info = QETH_CARD_TYPE_OSN},
3893         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
3894                                         .driver_info = QETH_CARD_TYPE_OSM},
3895         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
3896                                         .driver_info = QETH_CARD_TYPE_OSX},
3897         {},
3898 };
3899 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3900
3901 static struct ccw_driver qeth_ccw_driver = {
3902         .name = "qeth",
3903         .ids = qeth_ids,
3904         .probe = ccwgroup_probe_ccwdev,
3905         .remove = ccwgroup_remove_ccwdev,
3906 };
3907
3908 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3909                                 unsigned long driver_id)
3910 {
3911         return ccwgroup_create_from_string(root_dev, driver_id,
3912                                            &qeth_ccw_driver, 3, buf);
3913 }
3914
3915 int qeth_core_hardsetup_card(struct qeth_card *card)
3916 {
3917         int retries = 0;
3918         int rc;
3919
3920         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3921         atomic_set(&card->force_alloc_skb, 0);
3922 retry:
3923         if (retries)
3924                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3925                         dev_name(&card->gdev->dev));
3926         ccw_device_set_offline(CARD_DDEV(card));
3927         ccw_device_set_offline(CARD_WDEV(card));
3928         ccw_device_set_offline(CARD_RDEV(card));
3929         rc = ccw_device_set_online(CARD_RDEV(card));
3930         if (rc)
3931                 goto retriable;
3932         rc = ccw_device_set_online(CARD_WDEV(card));
3933         if (rc)
3934                 goto retriable;
3935         rc = ccw_device_set_online(CARD_DDEV(card));
3936         if (rc)
3937                 goto retriable;
3938         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3939 retriable:
3940         if (rc == -ERESTARTSYS) {
3941                 QETH_DBF_TEXT(SETUP, 2, "break1");
3942                 return rc;
3943         } else if (rc) {
3944                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3945                 if (++retries > 3)
3946                         goto out;
3947                 else
3948                         goto retry;
3949         }
3950         qeth_init_tokens(card);
3951         qeth_init_func_level(card);
3952         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3953         if (rc == -ERESTARTSYS) {
3954                 QETH_DBF_TEXT(SETUP, 2, "break2");
3955                 return rc;
3956         } else if (rc) {
3957                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3958                 if (--retries < 0)
3959                         goto out;
3960                 else
3961                         goto retry;
3962         }
3963         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3964         if (rc == -ERESTARTSYS) {
3965                 QETH_DBF_TEXT(SETUP, 2, "break3");
3966                 return rc;
3967         } else if (rc) {
3968                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3969                 if (--retries < 0)
3970                         goto out;
3971                 else
3972                         goto retry;
3973         }
3974         rc = qeth_mpc_initialize(card);
3975         if (rc) {
3976                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3977                 goto out;
3978         }
3979         return 0;
3980 out:
3981         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3982                 "an error on the device\n");
3983         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3984                 dev_name(&card->gdev->dev), rc);
3985         return rc;
3986 }
3987 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3988
3989 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3990                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3991 {
3992         struct page *page = virt_to_page(element->addr);
3993         if (*pskb == NULL) {
3994                 /* the upper protocol layers assume that there is data in the
3995                  * skb itself. Copy a small amount (64 bytes) to make them
3996                  * happy. */
3997                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3998                 if (!(*pskb))
3999                         return -ENOMEM;
4000                 skb_reserve(*pskb, ETH_HLEN);
4001                 if (data_len <= 64) {
4002                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4003                                 data_len);
4004                 } else {
4005                         get_page(page);
4006                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4007                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4008                                 data_len - 64);
4009                         (*pskb)->data_len += data_len - 64;
4010                         (*pskb)->len      += data_len - 64;
4011                         (*pskb)->truesize += data_len - 64;
4012                         (*pfrag)++;
4013                 }
4014         } else {
4015                 get_page(page);
4016                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4017                 (*pskb)->data_len += data_len;
4018                 (*pskb)->len      += data_len;
4019                 (*pskb)->truesize += data_len;
4020                 (*pfrag)++;
4021         }
4022         return 0;
4023 }
4024
4025 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4026                 struct qdio_buffer *buffer,
4027                 struct qdio_buffer_element **__element, int *__offset,
4028                 struct qeth_hdr **hdr)
4029 {
4030         struct qdio_buffer_element *element = *__element;
4031         int offset = *__offset;
4032         struct sk_buff *skb = NULL;
4033         int skb_len = 0;
4034         void *data_ptr;
4035         int data_len;
4036         int headroom = 0;
4037         int use_rx_sg = 0;
4038         int frag = 0;
4039
4040         /* qeth_hdr must not cross element boundaries */
4041         if (element->length < offset + sizeof(struct qeth_hdr)) {
4042                 if (qeth_is_last_sbale(element))
4043                         return NULL;
4044                 element++;
4045                 offset = 0;
4046                 if (element->length < sizeof(struct qeth_hdr))
4047                         return NULL;
4048         }
4049         *hdr = element->addr + offset;
4050
4051         offset += sizeof(struct qeth_hdr);
4052         switch ((*hdr)->hdr.l2.id) {
4053         case QETH_HEADER_TYPE_LAYER2:
4054                 skb_len = (*hdr)->hdr.l2.pkt_length;
4055                 break;
4056         case QETH_HEADER_TYPE_LAYER3:
4057                 skb_len = (*hdr)->hdr.l3.length;
4058                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4059                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4060                         headroom = TR_HLEN;
4061                 else
4062                         headroom = ETH_HLEN;
4063                 break;
4064         case QETH_HEADER_TYPE_OSN:
4065                 skb_len = (*hdr)->hdr.osn.pdu_length;
4066                 headroom = sizeof(struct qeth_hdr);
4067                 break;
4068         default:
4069                 break;
4070         }
4071
4072         if (!skb_len)
4073                 return NULL;
4074
4075         if ((skb_len >= card->options.rx_sg_cb) &&
4076             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4077             (!atomic_read(&card->force_alloc_skb))) {
4078                 use_rx_sg = 1;
4079         } else {
4080                 skb = dev_alloc_skb(skb_len + headroom);
4081                 if (!skb)
4082                         goto no_mem;
4083                 if (headroom)
4084                         skb_reserve(skb, headroom);
4085         }
4086
4087         data_ptr = element->addr + offset;
4088         while (skb_len) {
4089                 data_len = min(skb_len, (int)(element->length - offset));
4090                 if (data_len) {
4091                         if (use_rx_sg) {
4092                                 if (qeth_create_skb_frag(element, &skb, offset,
4093                                     &frag, data_len))
4094                                         goto no_mem;
4095                         } else {
4096                                 memcpy(skb_put(skb, data_len), data_ptr,
4097                                         data_len);
4098                         }
4099                 }
4100                 skb_len -= data_len;
4101                 if (skb_len) {
4102                         if (qeth_is_last_sbale(element)) {
4103                                 QETH_CARD_TEXT(card, 4, "unexeob");
4104                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4105                                 dev_kfree_skb_any(skb);
4106                                 card->stats.rx_errors++;
4107                                 return NULL;
4108                         }
4109                         element++;
4110                         offset = 0;
4111                         data_ptr = element->addr;
4112                 } else {
4113                         offset += data_len;
4114                 }
4115         }
4116         *__element = element;
4117         *__offset = offset;
4118         if (use_rx_sg && card->options.performance_stats) {
4119                 card->perf_stats.sg_skbs_rx++;
4120                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4121         }
4122         return skb;
4123 no_mem:
4124         if (net_ratelimit()) {
4125                 QETH_CARD_TEXT(card, 2, "noskbmem");
4126         }
4127         card->stats.rx_dropped++;
4128         return NULL;
4129 }
4130 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4131
4132 static void qeth_unregister_dbf_views(void)
4133 {
4134         int x;
4135         for (x = 0; x < QETH_DBF_INFOS; x++) {
4136                 debug_unregister(qeth_dbf[x].id);
4137                 qeth_dbf[x].id = NULL;
4138         }
4139 }
4140
4141 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4142 {
4143         char dbf_txt_buf[32];
4144         va_list args;
4145
4146         if (level > id->level)
4147                 return;
4148         va_start(args, fmt);
4149         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4150         va_end(args);
4151         debug_text_event(id, level, dbf_txt_buf);
4152 }
4153 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4154
4155 static int qeth_register_dbf_views(void)
4156 {
4157         int ret;
4158         int x;
4159
4160         for (x = 0; x < QETH_DBF_INFOS; x++) {
4161                 /* register the areas */
4162                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4163                                                 qeth_dbf[x].pages,
4164                                                 qeth_dbf[x].areas,
4165                                                 qeth_dbf[x].len);
4166                 if (qeth_dbf[x].id == NULL) {
4167                         qeth_unregister_dbf_views();
4168                         return -ENOMEM;
4169                 }
4170
4171                 /* register a view */
4172                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4173                 if (ret) {
4174                         qeth_unregister_dbf_views();
4175                         return ret;
4176                 }
4177
4178                 /* set a passing level */
4179                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4180         }
4181
4182         return 0;
4183 }
4184
4185 int qeth_core_load_discipline(struct qeth_card *card,
4186                 enum qeth_discipline_id discipline)
4187 {
4188         int rc = 0;
4189         switch (discipline) {
4190         case QETH_DISCIPLINE_LAYER3:
4191                 card->discipline.ccwgdriver = try_then_request_module(
4192                         symbol_get(qeth_l3_ccwgroup_driver),
4193                         "qeth_l3");
4194                 break;
4195         case QETH_DISCIPLINE_LAYER2:
4196                 card->discipline.ccwgdriver = try_then_request_module(
4197                         symbol_get(qeth_l2_ccwgroup_driver),
4198                         "qeth_l2");
4199                 break;
4200         }
4201         if (!card->discipline.ccwgdriver) {
4202                 dev_err(&card->gdev->dev, "There is no kernel module to "
4203                         "support discipline %d\n", discipline);
4204                 rc = -EINVAL;
4205         }
4206         return rc;
4207 }
4208
4209 void qeth_core_free_discipline(struct qeth_card *card)
4210 {
4211         if (card->options.layer2)
4212                 symbol_put(qeth_l2_ccwgroup_driver);
4213         else
4214                 symbol_put(qeth_l3_ccwgroup_driver);
4215         card->discipline.ccwgdriver = NULL;
4216 }
4217
4218 static void qeth_determine_capabilities(struct qeth_card *card)
4219 {
4220         int rc;
4221         int length;
4222         char *prcd;
4223
4224         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4225         rc = ccw_device_set_online(CARD_DDEV(card));
4226         if (rc) {
4227                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4228                 goto out;
4229         }
4230
4231
4232         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4233         if (rc) {
4234                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4235                         dev_name(&card->gdev->dev), rc);
4236                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4237                 goto out_offline;
4238         }
4239         qeth_configure_unitaddr(card, prcd);
4240         qeth_configure_blkt_default(card, prcd);
4241         kfree(prcd);
4242
4243         rc = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
4244         if (rc)
4245                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4246
4247 out_offline:
4248         ccw_device_set_offline(CARD_DDEV(card));
4249 out:
4250         return;
4251 }
4252
4253 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4254 {
4255         struct qeth_card *card;
4256         struct device *dev;
4257         int rc;
4258         unsigned long flags;
4259         char dbf_name[20];
4260
4261         QETH_DBF_TEXT(SETUP, 2, "probedev");
4262
4263         dev = &gdev->dev;
4264         if (!get_device(dev))
4265                 return -ENODEV;
4266
4267         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4268
4269         card = qeth_alloc_card();
4270         if (!card) {
4271                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4272                 rc = -ENOMEM;
4273                 goto err_dev;
4274         }
4275
4276         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4277                 dev_name(&gdev->dev));
4278         card->debug = debug_register(dbf_name, 2, 1, 8);
4279         if (!card->debug) {
4280                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4281                 rc = -ENOMEM;
4282                 goto err_card;
4283         }
4284         debug_register_view(card->debug, &debug_hex_ascii_view);
4285
4286         card->read.ccwdev  = gdev->cdev[0];
4287         card->write.ccwdev = gdev->cdev[1];
4288         card->data.ccwdev  = gdev->cdev[2];
4289         dev_set_drvdata(&gdev->dev, card);
4290         card->gdev = gdev;
4291         gdev->cdev[0]->handler = qeth_irq;
4292         gdev->cdev[1]->handler = qeth_irq;
4293         gdev->cdev[2]->handler = qeth_irq;
4294
4295         rc = qeth_determine_card_type(card);
4296         if (rc) {
4297                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4298                 goto err_dbf;
4299         }
4300         rc = qeth_setup_card(card);
4301         if (rc) {
4302                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4303                 goto err_dbf;
4304         }
4305
4306         if (card->info.type == QETH_CARD_TYPE_OSN)
4307                 rc = qeth_core_create_osn_attributes(dev);
4308         else
4309                 rc = qeth_core_create_device_attributes(dev);
4310         if (rc)
4311                 goto err_dbf;
4312         switch (card->info.type) {
4313         case QETH_CARD_TYPE_OSN:
4314         case QETH_CARD_TYPE_OSM:
4315                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4316                 if (rc)
4317                         goto err_attr;
4318                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4319                 if (rc)
4320                         goto err_disc;
4321         case QETH_CARD_TYPE_OSD:
4322         case QETH_CARD_TYPE_OSX:
4323         default:
4324                 break;
4325         }
4326
4327         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4328         list_add_tail(&card->list, &qeth_core_card_list.list);
4329         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4330
4331         qeth_determine_capabilities(card);
4332         return 0;
4333
4334 err_disc:
4335         qeth_core_free_discipline(card);
4336 err_attr:
4337         if (card->info.type == QETH_CARD_TYPE_OSN)
4338                 qeth_core_remove_osn_attributes(dev);
4339         else
4340                 qeth_core_remove_device_attributes(dev);
4341 err_dbf:
4342         debug_unregister(card->debug);
4343 err_card:
4344         qeth_core_free_card(card);
4345 err_dev:
4346         put_device(dev);
4347         return rc;
4348 }
4349
4350 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4351 {
4352         unsigned long flags;
4353         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4354
4355         QETH_DBF_TEXT(SETUP, 2, "removedv");
4356         if (card->discipline.ccwgdriver) {
4357                 card->discipline.ccwgdriver->remove(gdev);
4358                 qeth_core_free_discipline(card);
4359         }
4360
4361         if (card->info.type == QETH_CARD_TYPE_OSN) {
4362                 qeth_core_remove_osn_attributes(&gdev->dev);
4363         } else {
4364                 qeth_core_remove_device_attributes(&gdev->dev);
4365         }
4366         debug_unregister(card->debug);
4367         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4368         list_del(&card->list);
4369         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4370         qeth_core_free_card(card);
4371         dev_set_drvdata(&gdev->dev, NULL);
4372         put_device(&gdev->dev);
4373         return;
4374 }
4375
4376 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4377 {
4378         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4379         int rc = 0;
4380         int def_discipline;
4381
4382         if (!card->discipline.ccwgdriver) {
4383                 if (card->info.type == QETH_CARD_TYPE_IQD)
4384                         def_discipline = QETH_DISCIPLINE_LAYER3;
4385                 else
4386                         def_discipline = QETH_DISCIPLINE_LAYER2;
4387                 rc = qeth_core_load_discipline(card, def_discipline);
4388                 if (rc)
4389                         goto err;
4390                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4391                 if (rc)
4392                         goto err;
4393         }
4394         rc = card->discipline.ccwgdriver->set_online(gdev);
4395 err:
4396         return rc;
4397 }
4398
4399 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4400 {
4401         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4402         return card->discipline.ccwgdriver->set_offline(gdev);
4403 }
4404
4405 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4406 {
4407         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4408         if (card->discipline.ccwgdriver &&
4409             card->discipline.ccwgdriver->shutdown)
4410                 card->discipline.ccwgdriver->shutdown(gdev);
4411 }
4412
4413 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4414 {
4415         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4416         if (card->discipline.ccwgdriver &&
4417             card->discipline.ccwgdriver->prepare)
4418                 return card->discipline.ccwgdriver->prepare(gdev);
4419         return 0;
4420 }
4421
4422 static void qeth_core_complete(struct ccwgroup_device *gdev)
4423 {
4424         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4425         if (card->discipline.ccwgdriver &&
4426             card->discipline.ccwgdriver->complete)
4427                 card->discipline.ccwgdriver->complete(gdev);
4428 }
4429
4430 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4431 {
4432         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4433         if (card->discipline.ccwgdriver &&
4434             card->discipline.ccwgdriver->freeze)
4435                 return card->discipline.ccwgdriver->freeze(gdev);
4436         return 0;
4437 }
4438
4439 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4440 {
4441         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4442         if (card->discipline.ccwgdriver &&
4443             card->discipline.ccwgdriver->thaw)
4444                 return card->discipline.ccwgdriver->thaw(gdev);
4445         return 0;
4446 }
4447
4448 static int qeth_core_restore(struct ccwgroup_device *gdev)
4449 {
4450         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4451         if (card->discipline.ccwgdriver &&
4452             card->discipline.ccwgdriver->restore)
4453                 return card->discipline.ccwgdriver->restore(gdev);
4454         return 0;
4455 }
4456
4457 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4458         .owner = THIS_MODULE,
4459         .name = "qeth",
4460         .driver_id = 0xD8C5E3C8,
4461         .probe = qeth_core_probe_device,
4462         .remove = qeth_core_remove_device,
4463         .set_online = qeth_core_set_online,
4464         .set_offline = qeth_core_set_offline,
4465         .shutdown = qeth_core_shutdown,
4466         .prepare = qeth_core_prepare,
4467         .complete = qeth_core_complete,
4468         .freeze = qeth_core_freeze,
4469         .thaw = qeth_core_thaw,
4470         .restore = qeth_core_restore,
4471 };
4472
4473 static ssize_t
4474 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4475                            size_t count)
4476 {
4477         int err;
4478         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4479                                         qeth_core_ccwgroup_driver.driver_id);
4480         if (err)
4481                 return err;
4482         else
4483                 return count;
4484 }
4485
4486 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4487
4488 static struct {
4489         const char str[ETH_GSTRING_LEN];
4490 } qeth_ethtool_stats_keys[] = {
4491 /*  0 */{"rx skbs"},
4492         {"rx buffers"},
4493         {"tx skbs"},
4494         {"tx buffers"},
4495         {"tx skbs no packing"},
4496         {"tx buffers no packing"},
4497         {"tx skbs packing"},
4498         {"tx buffers packing"},
4499         {"tx sg skbs"},
4500         {"tx sg frags"},
4501 /* 10 */{"rx sg skbs"},
4502         {"rx sg frags"},
4503         {"rx sg page allocs"},
4504         {"tx large kbytes"},
4505         {"tx large count"},
4506         {"tx pk state ch n->p"},
4507         {"tx pk state ch p->n"},
4508         {"tx pk watermark low"},
4509         {"tx pk watermark high"},
4510         {"queue 0 buffer usage"},
4511 /* 20 */{"queue 1 buffer usage"},
4512         {"queue 2 buffer usage"},
4513         {"queue 3 buffer usage"},
4514         {"rx handler time"},
4515         {"rx handler count"},
4516         {"rx do_QDIO time"},
4517         {"rx do_QDIO count"},
4518         {"tx handler time"},
4519         {"tx handler count"},
4520         {"tx time"},
4521 /* 30 */{"tx count"},
4522         {"tx do_QDIO time"},
4523         {"tx do_QDIO count"},
4524         {"tx csum"},
4525         {"tx lin"},
4526 };
4527
4528 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4529 {
4530         switch (stringset) {
4531         case ETH_SS_STATS:
4532                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4533         default:
4534                 return -EINVAL;
4535         }
4536 }
4537 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4538
4539 void qeth_core_get_ethtool_stats(struct net_device *dev,
4540                 struct ethtool_stats *stats, u64 *data)
4541 {
4542         struct qeth_card *card = dev->ml_priv;
4543         data[0] = card->stats.rx_packets -
4544                                 card->perf_stats.initial_rx_packets;
4545         data[1] = card->perf_stats.bufs_rec;
4546         data[2] = card->stats.tx_packets -
4547                                 card->perf_stats.initial_tx_packets;
4548         data[3] = card->perf_stats.bufs_sent;
4549         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4550                         - card->perf_stats.skbs_sent_pack;
4551         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4552         data[6] = card->perf_stats.skbs_sent_pack;
4553         data[7] = card->perf_stats.bufs_sent_pack;
4554         data[8] = card->perf_stats.sg_skbs_sent;
4555         data[9] = card->perf_stats.sg_frags_sent;
4556         data[10] = card->perf_stats.sg_skbs_rx;
4557         data[11] = card->perf_stats.sg_frags_rx;
4558         data[12] = card->perf_stats.sg_alloc_page_rx;
4559         data[13] = (card->perf_stats.large_send_bytes >> 10);
4560         data[14] = card->perf_stats.large_send_cnt;
4561         data[15] = card->perf_stats.sc_dp_p;
4562         data[16] = card->perf_stats.sc_p_dp;
4563         data[17] = QETH_LOW_WATERMARK_PACK;
4564         data[18] = QETH_HIGH_WATERMARK_PACK;
4565         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4566         data[20] = (card->qdio.no_out_queues > 1) ?
4567                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4568         data[21] = (card->qdio.no_out_queues > 2) ?
4569                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4570         data[22] = (card->qdio.no_out_queues > 3) ?
4571                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4572         data[23] = card->perf_stats.inbound_time;
4573         data[24] = card->perf_stats.inbound_cnt;
4574         data[25] = card->perf_stats.inbound_do_qdio_time;
4575         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4576         data[27] = card->perf_stats.outbound_handler_time;
4577         data[28] = card->perf_stats.outbound_handler_cnt;
4578         data[29] = card->perf_stats.outbound_time;
4579         data[30] = card->perf_stats.outbound_cnt;
4580         data[31] = card->perf_stats.outbound_do_qdio_time;
4581         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4582         data[33] = card->perf_stats.tx_csum;
4583         data[34] = card->perf_stats.tx_lin;
4584 }
4585 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4586
4587 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4588 {
4589         switch (stringset) {
4590         case ETH_SS_STATS:
4591                 memcpy(data, &qeth_ethtool_stats_keys,
4592                         sizeof(qeth_ethtool_stats_keys));
4593                 break;
4594         default:
4595                 WARN_ON(1);
4596                 break;
4597         }
4598 }
4599 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4600
4601 void qeth_core_get_drvinfo(struct net_device *dev,
4602                 struct ethtool_drvinfo *info)
4603 {
4604         struct qeth_card *card = dev->ml_priv;
4605         if (card->options.layer2)
4606                 strcpy(info->driver, "qeth_l2");
4607         else
4608                 strcpy(info->driver, "qeth_l3");
4609
4610         strcpy(info->version, "1.0");
4611         strcpy(info->fw_version, card->info.mcl_level);
4612         sprintf(info->bus_info, "%s/%s/%s",
4613                         CARD_RDEV_ID(card),
4614                         CARD_WDEV_ID(card),
4615                         CARD_DDEV_ID(card));
4616 }
4617 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4618
4619 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4620                                         struct ethtool_cmd *ecmd)
4621 {
4622         struct qeth_card *card = netdev->ml_priv;
4623         enum qeth_link_types link_type;
4624
4625         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4626                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4627         else
4628                 link_type = card->info.link_type;
4629
4630         ecmd->transceiver = XCVR_INTERNAL;
4631         ecmd->supported = SUPPORTED_Autoneg;
4632         ecmd->advertising = ADVERTISED_Autoneg;
4633         ecmd->duplex = DUPLEX_FULL;
4634         ecmd->autoneg = AUTONEG_ENABLE;
4635
4636         switch (link_type) {
4637         case QETH_LINK_TYPE_FAST_ETH:
4638         case QETH_LINK_TYPE_LANE_ETH100:
4639                 ecmd->supported |= SUPPORTED_10baseT_Half |
4640                                         SUPPORTED_10baseT_Full |
4641                                         SUPPORTED_100baseT_Half |
4642                                         SUPPORTED_100baseT_Full |
4643                                         SUPPORTED_TP;
4644                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4645                                         ADVERTISED_10baseT_Full |
4646                                         ADVERTISED_100baseT_Half |
4647                                         ADVERTISED_100baseT_Full |
4648                                         ADVERTISED_TP;
4649                 ecmd->speed = SPEED_100;
4650                 ecmd->port = PORT_TP;
4651                 break;
4652
4653         case QETH_LINK_TYPE_GBIT_ETH:
4654         case QETH_LINK_TYPE_LANE_ETH1000:
4655                 ecmd->supported |= SUPPORTED_10baseT_Half |
4656                                         SUPPORTED_10baseT_Full |
4657                                         SUPPORTED_100baseT_Half |
4658                                         SUPPORTED_100baseT_Full |
4659                                         SUPPORTED_1000baseT_Half |
4660                                         SUPPORTED_1000baseT_Full |
4661                                         SUPPORTED_FIBRE;
4662                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4663                                         ADVERTISED_10baseT_Full |
4664                                         ADVERTISED_100baseT_Half |
4665                                         ADVERTISED_100baseT_Full |
4666                                         ADVERTISED_1000baseT_Half |
4667                                         ADVERTISED_1000baseT_Full |
4668                                         ADVERTISED_FIBRE;
4669                 ecmd->speed = SPEED_1000;
4670                 ecmd->port = PORT_FIBRE;
4671                 break;
4672
4673         case QETH_LINK_TYPE_10GBIT_ETH:
4674                 ecmd->supported |= SUPPORTED_10baseT_Half |
4675                                         SUPPORTED_10baseT_Full |
4676                                         SUPPORTED_100baseT_Half |
4677                                         SUPPORTED_100baseT_Full |
4678                                         SUPPORTED_1000baseT_Half |
4679                                         SUPPORTED_1000baseT_Full |
4680                                         SUPPORTED_10000baseT_Full |
4681                                         SUPPORTED_FIBRE;
4682                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4683                                         ADVERTISED_10baseT_Full |
4684                                         ADVERTISED_100baseT_Half |
4685                                         ADVERTISED_100baseT_Full |
4686                                         ADVERTISED_1000baseT_Half |
4687                                         ADVERTISED_1000baseT_Full |
4688                                         ADVERTISED_10000baseT_Full |
4689                                         ADVERTISED_FIBRE;
4690                 ecmd->speed = SPEED_10000;
4691                 ecmd->port = PORT_FIBRE;
4692                 break;
4693
4694         default:
4695                 ecmd->supported |= SUPPORTED_10baseT_Half |
4696                                         SUPPORTED_10baseT_Full |
4697                                         SUPPORTED_TP;
4698                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4699                                         ADVERTISED_10baseT_Full |
4700                                         ADVERTISED_TP;
4701                 ecmd->speed = SPEED_10;
4702                 ecmd->port = PORT_TP;
4703         }
4704
4705         return 0;
4706 }
4707 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4708
4709 static int __init qeth_core_init(void)
4710 {
4711         int rc;
4712
4713         pr_info("loading core functions\n");
4714         INIT_LIST_HEAD(&qeth_core_card_list.list);
4715         rwlock_init(&qeth_core_card_list.rwlock);
4716
4717         rc = qeth_register_dbf_views();
4718         if (rc)
4719                 goto out_err;
4720         rc = ccw_driver_register(&qeth_ccw_driver);
4721         if (rc)
4722                 goto ccw_err;
4723         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4724         if (rc)
4725                 goto ccwgroup_err;
4726         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4727                                 &driver_attr_group);
4728         if (rc)
4729                 goto driver_err;
4730         qeth_core_root_dev = root_device_register("qeth");
4731         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4732         if (rc)
4733                 goto register_err;
4734
4735         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4736                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4737         if (!qeth_core_header_cache) {
4738                 rc = -ENOMEM;
4739                 goto slab_err;
4740         }
4741
4742         return 0;
4743 slab_err:
4744         root_device_unregister(qeth_core_root_dev);
4745 register_err:
4746         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4747                            &driver_attr_group);
4748 driver_err:
4749         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4750 ccwgroup_err:
4751         ccw_driver_unregister(&qeth_ccw_driver);
4752 ccw_err:
4753         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4754         qeth_unregister_dbf_views();
4755 out_err:
4756         pr_err("Initializing the qeth device driver failed\n");
4757         return rc;
4758 }
4759
4760 static void __exit qeth_core_exit(void)
4761 {
4762         root_device_unregister(qeth_core_root_dev);
4763         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4764                            &driver_attr_group);
4765         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4766         ccw_driver_unregister(&qeth_ccw_driver);
4767         kmem_cache_destroy(qeth_core_header_cache);
4768         qeth_unregister_dbf_views();
4769         pr_info("core functions removed\n");
4770 }
4771
4772 module_init(qeth_core_init);
4773 module_exit(qeth_core_exit);
4774 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4775 MODULE_DESCRIPTION("qeth core functions");
4776 MODULE_LICENSE("GPL");