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                 card->read_or_write_problem = 1;
 266                 qeth_schedule_recovery(card);
 267                 wake_up(&card->wait_q);
 268         }
 269         return rc;
 270 }
 271
 272 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 273 {
 274         struct qeth_reply *reply;
 275
 276         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 277         if (reply) {
 278                 atomic_set(&reply->refcnt, 1);
 279                 atomic_set(&reply->received, 0);
 280                 reply->card = card;
 281         };
 282         return reply;
 283 }
 284
 285 static void qeth_get_reply(struct qeth_reply *reply)
 286 {
 287         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 288         atomic_inc(&reply->refcnt);
 289 }
 290
 291 static void qeth_put_reply(struct qeth_reply *reply)
 292 {
 293         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 294         if (atomic_dec_and_test(&reply->refcnt))
 295                 kfree(reply);
 296 }
 297
 298 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 299                 struct qeth_card *card)
 300 {
 301         char *ipa_name;
 302         int com = cmd->hdr.command;
 303         ipa_name = qeth_get_ipa_cmd_name(com);
 304         if (rc)
 305                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 306                                 ipa_name, com, QETH_CARD_IFNAME(card),
 307                                         rc, qeth_get_ipa_msg(rc));
 308         else
 309                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 310                                 ipa_name, com, QETH_CARD_IFNAME(card));
 311 }
 312
 313 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 314                 struct qeth_cmd_buffer *iob)
 315 {
 316         struct qeth_ipa_cmd *cmd = NULL;
 317
 318         QETH_CARD_TEXT(card, 5, "chkipad");
 319         if (IS_IPA(iob->data)) {
 320                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 321                 if (IS_IPA_REPLY(cmd)) {
 322                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 323                             cmd->hdr.command != IPA_CMD_DELCCID &&
 324                             cmd->hdr.command != IPA_CMD_MODCCID &&
 325                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 326                                 qeth_issue_ipa_msg(cmd,
 327                                                 cmd->hdr.return_code, card);
 328                         return cmd;
 329                 } else {
 330                         switch (cmd->hdr.command) {
 331                         case IPA_CMD_STOPLAN:
 332                                 dev_warn(&card->gdev->dev,
 333                                            "The link for interface %s on CHPID"
 334                                            " 0x%X failed\n",
 335                                            QETH_CARD_IFNAME(card),
 336                                            card->info.chpid);
 337                                 card->lan_online = 0;
 338                                 if (card->dev && netif_carrier_ok(card->dev))
 339                                         netif_carrier_off(card->dev);
 340                                 return NULL;
 341                         case IPA_CMD_STARTLAN:
 342                                 dev_info(&card->gdev->dev,
 343                                            "The link for %s on CHPID 0x%X has"
 344                                            " been restored\n",
 345                                            QETH_CARD_IFNAME(card),
 346                                            card->info.chpid);
 347                                 netif_carrier_on(card->dev);
 348                                 card->lan_online = 1;
 349                                 qeth_schedule_recovery(card);
 350                                 return NULL;
 351                         case IPA_CMD_MODCCID:
 352                                 return cmd;
 353                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 354                                 QETH_CARD_TEXT(card, 3, "irla");
 355                                 break;
 356                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 357                                 QETH_CARD_TEXT(card, 3, "urla");
 358                                 break;
 359                         default:
 360                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 361                                            "but not a reply!\n");
 362                                 break;
 363                         }
 364                 }
 365         }
 366         return cmd;
 367 }
 368
 369 void qeth_clear_ipacmd_list(struct qeth_card *card)
 370 {
 371         struct qeth_reply *reply, *r;
 372         unsigned long flags;
 373
 374         QETH_CARD_TEXT(card, 4, "clipalst");
 375
 376         spin_lock_irqsave(&card->lock, flags);
 377         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 378                 qeth_get_reply(reply);
 379                 reply->rc = -EIO;
 380                 atomic_inc(&reply->received);
 381                 list_del_init(&reply->list);
 382                 wake_up(&reply->wait_q);
 383                 qeth_put_reply(reply);
 384         }
 385         spin_unlock_irqrestore(&card->lock, flags);
 386         atomic_set(&card->write.irq_pending, 0);
 387 }
 388 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 389
 390 static int qeth_check_idx_response(struct qeth_card *card,
 391         unsigned char *buffer)
 392 {
 393         if (!buffer)
 394                 return 0;
 395
 396         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 397         if ((buffer[2] & 0xc0) == 0xc0) {
 398                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 399                            "with cause code 0x%02x%s\n",
 400                            buffer[4],
 401                            ((buffer[4] == 0x22) ?
 402                             " -- try another portname" : ""));
 403                 QETH_CARD_TEXT(card, 2, "ckidxres");
 404                 QETH_CARD_TEXT(card, 2, " idxterm");
 405                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 406                 if (buffer[4] == 0xf6) {
 407                         dev_err(&card->gdev->dev,
 408                         "The qeth device is not configured "
 409                         "for the OSI layer required by z/VM\n");
 410                         return -EPERM;
 411                 }
 412                 return -EIO;
 413         }
 414         return 0;
 415 }
 416
 417 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 418                 __u32 len)
 419 {
 420         struct qeth_card *card;
 421
 422         card = CARD_FROM_CDEV(channel->ccwdev);
 423         QETH_CARD_TEXT(card, 4, "setupccw");
 424         if (channel == &card->read)
 425                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 426         else
 427                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 428         channel->ccw.count = len;
 429         channel->ccw.cda = (__u32) __pa(iob);
 430 }
 431
 432 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 433 {
 434         __u8 index;
 435
 436         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 437         index = channel->io_buf_no;
 438         do {
 439                 if (channel->iob[index].state == BUF_STATE_FREE) {
 440                         channel->iob[index].state = BUF_STATE_LOCKED;
 441                         channel->io_buf_no = (channel->io_buf_no + 1) %
 442                                 QETH_CMD_BUFFER_NO;
 443                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 444                         return channel->iob + index;
 445                 }
 446                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 447         } while (index != channel->io_buf_no);
 448
 449         return NULL;
 450 }
 451
 452 void qeth_release_buffer(struct qeth_channel *channel,
 453                 struct qeth_cmd_buffer *iob)
 454 {
 455         unsigned long flags;
 456
 457         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 458         spin_lock_irqsave(&channel->iob_lock, flags);
 459         memset(iob->data, 0, QETH_BUFSIZE);
 460         iob->state = BUF_STATE_FREE;
 461         iob->callback = qeth_send_control_data_cb;
 462         iob->rc = 0;
 463         spin_unlock_irqrestore(&channel->iob_lock, flags);
 464 }
 465 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 466
 467 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 468 {
 469         struct qeth_cmd_buffer *buffer = NULL;
 470         unsigned long flags;
 471
 472         spin_lock_irqsave(&channel->iob_lock, flags);
 473         buffer = __qeth_get_buffer(channel);
 474         spin_unlock_irqrestore(&channel->iob_lock, flags);
 475         return buffer;
 476 }
 477
 478 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 479 {
 480         struct qeth_cmd_buffer *buffer;
 481         wait_event(channel->wait_q,
 482                    ((buffer = qeth_get_buffer(channel)) != NULL));
 483         return buffer;
 484 }
 485 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 486
 487 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 488 {
 489         int cnt;
 490
 491         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 492                 qeth_release_buffer(channel, &channel->iob[cnt]);
 493         channel->buf_no = 0;
 494         channel->io_buf_no = 0;
 495 }
 496 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 497
 498 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 499                   struct qeth_cmd_buffer *iob)
 500 {
 501         struct qeth_card *card;
 502         struct qeth_reply *reply, *r;
 503         struct qeth_ipa_cmd *cmd;
 504         unsigned long flags;
 505         int keep_reply;
 506         int rc = 0;
 507
 508         card = CARD_FROM_CDEV(channel->ccwdev);
 509         QETH_CARD_TEXT(card, 4, "sndctlcb");
 510         rc = qeth_check_idx_response(card, iob->data);
 511         switch (rc) {
 512         case 0:
 513                 break;
 514         case -EIO:
 515                 qeth_clear_ipacmd_list(card);
 516                 qeth_schedule_recovery(card);
 517                 /* fall through */
 518         default:
 519                 goto out;
 520         }
 521
 522         cmd = qeth_check_ipa_data(card, iob);
 523         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 524                 goto out;
 525         /*in case of OSN : check if cmd is set */
 526         if (card->info.type == QETH_CARD_TYPE_OSN &&
 527             cmd &&
 528             cmd->hdr.command != IPA_CMD_STARTLAN &&
 529             card->osn_info.assist_cb != NULL) {
 530                 card->osn_info.assist_cb(card->dev, cmd);
 531                 goto out;
 532         }
 533
 534         spin_lock_irqsave(&card->lock, flags);
 535         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 536                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 537                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 538                         qeth_get_reply(reply);
 539                         list_del_init(&reply->list);
 540                         spin_unlock_irqrestore(&card->lock, flags);
 541                         keep_reply = 0;
 542                         if (reply->callback != NULL) {
 543                                 if (cmd) {
 544                                         reply->offset = (__u16)((char *)cmd -
 545                                                         (char *)iob->data);
 546                                         keep_reply = reply->callback(card,
 547                                                         reply,
 548                                                         (unsigned long)cmd);
 549                                 } else
 550                                         keep_reply = reply->callback(card,
 551                                                         reply,
 552                                                         (unsigned long)iob);
 553                         }
 554                         if (cmd)
 555                                 reply->rc = (u16) cmd->hdr.return_code;
 556                         else if (iob->rc)
 557                                 reply->rc = iob->rc;
 558                         if (keep_reply) {
 559                                 spin_lock_irqsave(&card->lock, flags);
 560                                 list_add_tail(&reply->list,
 561                                               &card->cmd_waiter_list);
 562                                 spin_unlock_irqrestore(&card->lock, flags);
 563                         } else {
 564                                 atomic_inc(&reply->received);
 565                                 wake_up(&reply->wait_q);
 566                         }
 567                         qeth_put_reply(reply);
 568                         goto out;
 569                 }
 570         }
 571         spin_unlock_irqrestore(&card->lock, flags);
 572 out:
 573         memcpy(&card->seqno.pdu_hdr_ack,
 574                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 575                 QETH_SEQ_NO_LENGTH);
 576         qeth_release_buffer(channel, iob);
 577 }
 578
 579 static int qeth_setup_channel(struct qeth_channel *channel)
 580 {
 581         int cnt;
 582
 583         QETH_DBF_TEXT(SETUP, 2, "setupch");
 584         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 585                 channel->iob[cnt].data =
 586                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 587                 if (channel->iob[cnt].data == NULL)
 588                         break;
 589                 channel->iob[cnt].state = BUF_STATE_FREE;
 590                 channel->iob[cnt].channel = channel;
 591                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 592                 channel->iob[cnt].rc = 0;
 593         }
 594         if (cnt < QETH_CMD_BUFFER_NO) {
 595                 while (cnt-- > 0)
 596                         kfree(channel->iob[cnt].data);
 597                 return -ENOMEM;
 598         }
 599         channel->buf_no = 0;
 600         channel->io_buf_no = 0;
 601         atomic_set(&channel->irq_pending, 0);
 602         spin_lock_init(&channel->iob_lock);
 603
 604         init_waitqueue_head(&channel->wait_q);
 605         return 0;
 606 }
 607
 608 static int qeth_set_thread_start_bit(struct qeth_card *card,
 609                 unsigned long thread)
 610 {
 611         unsigned long flags;
 612
 613         spin_lock_irqsave(&card->thread_mask_lock, flags);
 614         if (!(card->thread_allowed_mask & thread) ||
 615               (card->thread_start_mask & thread)) {
 616                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 617                 return -EPERM;
 618         }
 619         card->thread_start_mask |= thread;
 620         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 621         return 0;
 622 }
 623
 624 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 625 {
 626         unsigned long flags;
 627
 628         spin_lock_irqsave(&card->thread_mask_lock, flags);
 629         card->thread_start_mask &= ~thread;
 630         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 631         wake_up(&card->wait_q);
 632 }
 633 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 634
 635 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 636 {
 637         unsigned long flags;
 638
 639         spin_lock_irqsave(&card->thread_mask_lock, flags);
 640         card->thread_running_mask &= ~thread;
 641         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 642         wake_up(&card->wait_q);
 643 }
 644 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 645
 646 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 647 {
 648         unsigned long flags;
 649         int rc = 0;
 650
 651         spin_lock_irqsave(&card->thread_mask_lock, flags);
 652         if (card->thread_start_mask & thread) {
 653                 if ((card->thread_allowed_mask & thread) &&
 654                     !(card->thread_running_mask & thread)) {
 655                         rc = 1;
 656                         card->thread_start_mask &= ~thread;
 657                         card->thread_running_mask |= thread;
 658                 } else
 659                         rc = -EPERM;
 660         }
 661         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 662         return rc;
 663 }
 664
 665 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 666 {
 667         int rc = 0;
 668
 669         wait_event(card->wait_q,
 670                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 671         return rc;
 672 }
 673 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 674
 675 void qeth_schedule_recovery(struct qeth_card *card)
 676 {
 677         QETH_CARD_TEXT(card, 2, "startrec");
 678         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 679                 schedule_work(&card->kernel_thread_starter);
 680 }
 681 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 682
 683 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 684 {
 685         int dstat, cstat;
 686         char *sense;
 687         struct qeth_card *card;
 688
 689         sense = (char *) irb->ecw;
 690         cstat = irb->scsw.cmd.cstat;
 691         dstat = irb->scsw.cmd.dstat;
 692         card = CARD_FROM_CDEV(cdev);
 693
 694         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 695                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 696                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 697                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 698                 dev_warn(&cdev->dev, "The qeth device driver "
 699                         "failed to recover an error on the device\n");
 700                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 701                         dev_name(&cdev->dev), dstat, cstat);
 702                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 703                                 16, 1, irb, 64, 1);
 704                 return 1;
 705         }
 706
 707         if (dstat & DEV_STAT_UNIT_CHECK) {
 708                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 709                     SENSE_RESETTING_EVENT_FLAG) {
 710                         QETH_CARD_TEXT(card, 2, "REVIND");
 711                         return 1;
 712                 }
 713                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 714                     SENSE_COMMAND_REJECT_FLAG) {
 715                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 716                         return 1;
 717                 }
 718                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 719                         QETH_CARD_TEXT(card, 2, "AFFE");
 720                         return 1;
 721                 }
 722                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 723                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 724                         return 0;
 725                 }
 726                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 727                         return 1;
 728         }
 729         return 0;
 730 }
 731
 732 static long __qeth_check_irb_error(struct ccw_device *cdev,
 733                 unsigned long intparm, struct irb *irb)
 734 {
 735         struct qeth_card *card;
 736
 737         card = CARD_FROM_CDEV(cdev);
 738
 739         if (!IS_ERR(irb))
 740                 return 0;
 741
 742         switch (PTR_ERR(irb)) {
 743         case -EIO:
 744                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 745                         dev_name(&cdev->dev));
 746                 QETH_CARD_TEXT(card, 2, "ckirberr");
 747                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 748                 break;
 749         case -ETIMEDOUT:
 750                 dev_warn(&cdev->dev, "A hardware operation timed out"
 751                         " on the device\n");
 752                 QETH_CARD_TEXT(card, 2, "ckirberr");
 753                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 754                 if (intparm == QETH_RCD_PARM) {
 755                         if (card && (card->data.ccwdev == cdev)) {
 756                                 card->data.state = CH_STATE_DOWN;
 757                                 wake_up(&card->wait_q);
 758                         }
 759                 }
 760                 break;
 761         default:
 762                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 763                         dev_name(&cdev->dev), PTR_ERR(irb));
 764                 QETH_CARD_TEXT(card, 2, "ckirberr");
 765                 QETH_CARD_TEXT(card, 2, "  rc???");
 766         }
 767         return PTR_ERR(irb);
 768 }
 769
 770 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 771                 struct irb *irb)
 772 {
 773         int rc;
 774         int cstat, dstat;
 775         struct qeth_cmd_buffer *buffer;
 776         struct qeth_channel *channel;
 777         struct qeth_card *card;
 778         struct qeth_cmd_buffer *iob;
 779         __u8 index;
 780
 781         if (__qeth_check_irb_error(cdev, intparm, irb))
 782                 return;
 783         cstat = irb->scsw.cmd.cstat;
 784         dstat = irb->scsw.cmd.dstat;
 785
 786         card = CARD_FROM_CDEV(cdev);
 787         if (!card)
 788                 return;
 789
 790         QETH_CARD_TEXT(card, 5, "irq");
 791
 792         if (card->read.ccwdev == cdev) {
 793                 channel = &card->read;
 794                 QETH_CARD_TEXT(card, 5, "read");
 795         } else if (card->write.ccwdev == cdev) {
 796                 channel = &card->write;
 797                 QETH_CARD_TEXT(card, 5, "write");
 798         } else {
 799                 channel = &card->data;
 800                 QETH_CARD_TEXT(card, 5, "data");
 801         }
 802         atomic_set(&channel->irq_pending, 0);
 803
 804         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 805                 channel->state = CH_STATE_STOPPED;
 806
 807         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 808                 channel->state = CH_STATE_HALTED;
 809
 810         /*let's wake up immediately on data channel*/
 811         if ((channel == &card->data) && (intparm != 0) &&
 812             (intparm != QETH_RCD_PARM))
 813                 goto out;
 814
 815         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 816                 QETH_CARD_TEXT(card, 6, "clrchpar");
 817                 /* we don't have to handle this further */
 818                 intparm = 0;
 819         }
 820         if (intparm == QETH_HALT_CHANNEL_PARM) {
 821                 QETH_CARD_TEXT(card, 6, "hltchpar");
 822                 /* we don't have to handle this further */
 823                 intparm = 0;
 824         }
 825         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 826             (dstat & DEV_STAT_UNIT_CHECK) ||
 827             (cstat)) {
 828                 if (irb->esw.esw0.erw.cons) {
 829                         dev_warn(&channel->ccwdev->dev,
 830                                 "The qeth device driver failed to recover "
 831                                 "an error on the device\n");
 832                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 833                                 "0x%X dstat 0x%X\n",
 834                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 835                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 836                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 837                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 838                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 839                 }
 840                 if (intparm == QETH_RCD_PARM) {
 841                         channel->state = CH_STATE_DOWN;
 842                         goto out;
 843                 }
 844                 rc = qeth_get_problem(cdev, irb);
 845                 if (rc) {
 846                         qeth_clear_ipacmd_list(card);
 847                         qeth_schedule_recovery(card);
 848                         goto out;
 849                 }
 850         }
 851
 852         if (intparm == QETH_RCD_PARM) {
 853                 channel->state = CH_STATE_RCD_DONE;
 854                 goto out;
 855         }
 856         if (intparm) {
 857                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 858                 buffer->state = BUF_STATE_PROCESSED;
 859         }
 860         if (channel == &card->data)
 861                 return;
 862         if (channel == &card->read &&
 863             channel->state == CH_STATE_UP)
 864                 qeth_issue_next_read(card);
 865
 866         iob = channel->iob;
 867         index = channel->buf_no;
 868         while (iob[index].state == BUF_STATE_PROCESSED) {
 869                 if (iob[index].callback != NULL)
 870                         iob[index].callback(channel, iob + index);
 871
 872                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 873         }
 874         channel->buf_no = index;
 875 out:
 876         wake_up(&card->wait_q);
 877         return;
 878 }
 879
 880 static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 881                  struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
 882 {
 883         int i;
 884         struct sk_buff *skb;
 885
 886         /* is PCI flag set on buffer? */
 887         if (buf->buffer->element[0].flags & 0x40)
 888                 atomic_dec(&queue->set_pci_flags_count);
 889
 890         if (!qeth_skip_skb) {
 891                 skb = skb_dequeue(&buf->skb_list);
 892                 while (skb) {
 893                         atomic_dec(&skb->users);
 894                         dev_kfree_skb_any(skb);
 895                         skb = skb_dequeue(&buf->skb_list);
 896                 }
 897         }
 898         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 899                 if (buf->buffer->element[i].addr && buf->is_header[i])
 900                         kmem_cache_free(qeth_core_header_cache,
 901                                 buf->buffer->element[i].addr);
 902                 buf->is_header[i] = 0;
 903                 buf->buffer->element[i].length = 0;
 904                 buf->buffer->element[i].addr = NULL;
 905                 buf->buffer->element[i].flags = 0;
 906         }
 907         buf->buffer->element[15].flags = 0;
 908         buf->next_element_to_fill = 0;
 909         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 910 }
 911
 912 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 913                 struct qeth_qdio_out_buffer *buf)
 914 {
 915         __qeth_clear_output_buffer(queue, buf, 0);
 916 }
 917
 918 void qeth_clear_qdio_buffers(struct qeth_card *card)
 919 {
 920         int i, j;
 921
 922         QETH_CARD_TEXT(card, 2, "clearqdbf");
 923         /* clear outbound buffers to free skbs */
 924         for (i = 0; i < card->qdio.no_out_queues; ++i)
 925                 if (card->qdio.out_qs[i]) {
 926                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 927                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 928                                                 &card->qdio.out_qs[i]->bufs[j]);
 929                 }
 930 }
 931 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 932
 933 static void qeth_free_buffer_pool(struct qeth_card *card)
 934 {
 935         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 936         int i = 0;
 937         list_for_each_entry_safe(pool_entry, tmp,
 938                                  &card->qdio.init_pool.entry_list, init_list){
 939                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 940                         free_page((unsigned long)pool_entry->elements[i]);
 941                 list_del(&pool_entry->init_list);
 942                 kfree(pool_entry);
 943         }
 944 }
 945
 946 static void qeth_free_qdio_buffers(struct qeth_card *card)
 947 {
 948         int i, j;
 949
 950         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 951                 QETH_QDIO_UNINITIALIZED)
 952                 return;
 953         kfree(card->qdio.in_q);
 954         card->qdio.in_q = NULL;
 955         /* inbound buffer pool */
 956         qeth_free_buffer_pool(card);
 957         /* free outbound qdio_qs */
 958         if (card->qdio.out_qs) {
 959                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 960                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 961                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 962                                                 &card->qdio.out_qs[i]->bufs[j]);
 963                         kfree(card->qdio.out_qs[i]);
 964                 }
 965                 kfree(card->qdio.out_qs);
 966                 card->qdio.out_qs = NULL;
 967         }
 968 }
 969
 970 static void qeth_clean_channel(struct qeth_channel *channel)
 971 {
 972         int cnt;
 973
 974         QETH_DBF_TEXT(SETUP, 2, "freech");
 975         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 976                 kfree(channel->iob[cnt].data);
 977 }
 978
 979 static void qeth_get_channel_path_desc(struct qeth_card *card)
 980 {
 981         struct ccw_device *ccwdev;
 982         struct channelPath_dsc {
 983                 u8 flags;
 984                 u8 lsn;
 985                 u8 desc;
 986                 u8 chpid;
 987                 u8 swla;
 988                 u8 zeroes;
 989                 u8 chla;
 990                 u8 chpp;
 991         } *chp_dsc;
 992
 993         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
 994
 995         ccwdev = card->data.ccwdev;
 996         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
 997         if (chp_dsc != NULL) {
 998                 /* CHPP field bit 6 == 1 -> single queue */
 999                 if ((chp_dsc->chpp & 0x02) == 0x02)
1000                         card->qdio.no_out_queues = 1;
1001                 card->info.func_level = 0x4100 + chp_dsc->desc;
1002                 kfree(chp_dsc);
1003         }
1004         if (card->qdio.no_out_queues == 1) {
1005                 card->qdio.default_out_queue = 0;
1006                 dev_info(&card->gdev->dev,
1007                         "Priority Queueing not supported\n");
1008         }
1009         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1010         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1011         return;
1012 }
1013
1014 static void qeth_init_qdio_info(struct qeth_card *card)
1015 {
1016         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1017         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1018         /* inbound */
1019         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1020         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1021         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1022         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1023         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1024 }
1025
1026 static void qeth_set_intial_options(struct qeth_card *card)
1027 {
1028         card->options.route4.type = NO_ROUTER;
1029         card->options.route6.type = NO_ROUTER;
1030         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1031         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1032         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1033         card->options.fake_broadcast = 0;
1034         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1035         card->options.performance_stats = 0;
1036         card->options.rx_sg_cb = QETH_RX_SG_CB;
1037         card->options.isolation = ISOLATION_MODE_NONE;
1038 }
1039
1040 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1041 {
1042         unsigned long flags;
1043         int rc = 0;
1044
1045         spin_lock_irqsave(&card->thread_mask_lock, flags);
1046         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1047                         (u8) card->thread_start_mask,
1048                         (u8) card->thread_allowed_mask,
1049                         (u8) card->thread_running_mask);
1050         rc = (card->thread_start_mask & thread);
1051         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1052         return rc;
1053 }
1054
1055 static void qeth_start_kernel_thread(struct work_struct *work)
1056 {
1057         struct qeth_card *card = container_of(work, struct qeth_card,
1058                                         kernel_thread_starter);
1059         QETH_CARD_TEXT(card , 2, "strthrd");
1060
1061         if (card->read.state != CH_STATE_UP &&
1062             card->write.state != CH_STATE_UP)
1063                 return;
1064         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1065                 kthread_run(card->discipline.recover, (void *) card,
1066                                 "qeth_recover");
1067 }
1068
1069 static int qeth_setup_card(struct qeth_card *card)
1070 {
1071
1072         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1073         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1074
1075         card->read.state  = CH_STATE_DOWN;
1076         card->write.state = CH_STATE_DOWN;
1077         card->data.state  = CH_STATE_DOWN;
1078         card->state = CARD_STATE_DOWN;
1079         card->lan_online = 0;
1080         card->use_hard_stop = 0;
1081         card->read_or_write_problem = 0;
1082         card->dev = NULL;
1083         spin_lock_init(&card->vlanlock);
1084         spin_lock_init(&card->mclock);
1085         card->vlangrp = NULL;
1086         spin_lock_init(&card->lock);
1087         spin_lock_init(&card->ip_lock);
1088         spin_lock_init(&card->thread_mask_lock);
1089         mutex_init(&card->conf_mutex);
1090         mutex_init(&card->discipline_mutex);
1091         card->thread_start_mask = 0;
1092         card->thread_allowed_mask = 0;
1093         card->thread_running_mask = 0;
1094         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1095         INIT_LIST_HEAD(&card->ip_list);
1096         INIT_LIST_HEAD(card->ip_tbd_list);
1097         INIT_LIST_HEAD(&card->cmd_waiter_list);
1098         init_waitqueue_head(&card->wait_q);
1099         /* intial options */
1100         qeth_set_intial_options(card);
1101         /* IP address takeover */
1102         INIT_LIST_HEAD(&card->ipato.entries);
1103         card->ipato.enabled = 0;
1104         card->ipato.invert4 = 0;
1105         card->ipato.invert6 = 0;
1106         /* init QDIO stuff */
1107         qeth_init_qdio_info(card);
1108         return 0;
1109 }
1110
1111 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1112 {
1113         struct qeth_card *card = container_of(slr, struct qeth_card,
1114                                         qeth_service_level);
1115         if (card->info.mcl_level[0])
1116                 seq_printf(m, "qeth: %s firmware level %s\n",
1117                         CARD_BUS_ID(card), card->info.mcl_level);
1118 }
1119
1120 static struct qeth_card *qeth_alloc_card(void)
1121 {
1122         struct qeth_card *card;
1123
1124         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1125         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1126         if (!card)
1127                 goto out;
1128         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1129         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1130         if (!card->ip_tbd_list) {
1131                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1132                 goto out_card;
1133         }
1134         if (qeth_setup_channel(&card->read))
1135                 goto out_ip;
1136         if (qeth_setup_channel(&card->write))
1137                 goto out_channel;
1138         card->options.layer2 = -1;
1139         card->qeth_service_level.seq_print = qeth_core_sl_print;
1140         register_service_level(&card->qeth_service_level);
1141         return card;
1142
1143 out_channel:
1144         qeth_clean_channel(&card->read);
1145 out_ip:
1146         kfree(card->ip_tbd_list);
1147 out_card:
1148         kfree(card);
1149 out:
1150         return NULL;
1151 }
1152
1153 static int qeth_determine_card_type(struct qeth_card *card)
1154 {
1155         int i = 0;
1156
1157         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1158
1159         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1160         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1161         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1162                 if ((CARD_RDEV(card)->id.dev_type ==
1163                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1164                     (CARD_RDEV(card)->id.dev_model ==
1165                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1166                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1167                         card->qdio.no_out_queues =
1168                                 known_devices[i][QETH_QUEUE_NO_IND];
1169                         card->info.is_multicast_different =
1170                                 known_devices[i][QETH_MULTICAST_IND];
1171                         qeth_get_channel_path_desc(card);
1172                         return 0;
1173                 }
1174                 i++;
1175         }
1176         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1177         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1178                 "unknown type\n");
1179         return -ENOENT;
1180 }
1181
1182 static int qeth_clear_channel(struct qeth_channel *channel)
1183 {
1184         unsigned long flags;
1185         struct qeth_card *card;
1186         int rc;
1187
1188         card = CARD_FROM_CDEV(channel->ccwdev);
1189         QETH_CARD_TEXT(card, 3, "clearch");
1190         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1191         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1192         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1193
1194         if (rc)
1195                 return rc;
1196         rc = wait_event_interruptible_timeout(card->wait_q,
1197                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1198         if (rc == -ERESTARTSYS)
1199                 return rc;
1200         if (channel->state != CH_STATE_STOPPED)
1201                 return -ETIME;
1202         channel->state = CH_STATE_DOWN;
1203         return 0;
1204 }
1205
1206 static int qeth_halt_channel(struct qeth_channel *channel)
1207 {
1208         unsigned long flags;
1209         struct qeth_card *card;
1210         int rc;
1211
1212         card = CARD_FROM_CDEV(channel->ccwdev);
1213         QETH_CARD_TEXT(card, 3, "haltch");
1214         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1215         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1216         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1217
1218         if (rc)
1219                 return rc;
1220         rc = wait_event_interruptible_timeout(card->wait_q,
1221                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1222         if (rc == -ERESTARTSYS)
1223                 return rc;
1224         if (channel->state != CH_STATE_HALTED)
1225                 return -ETIME;
1226         return 0;
1227 }
1228
1229 static int qeth_halt_channels(struct qeth_card *card)
1230 {
1231         int rc1 = 0, rc2 = 0, rc3 = 0;
1232
1233         QETH_CARD_TEXT(card, 3, "haltchs");
1234         rc1 = qeth_halt_channel(&card->read);
1235         rc2 = qeth_halt_channel(&card->write);
1236         rc3 = qeth_halt_channel(&card->data);
1237         if (rc1)
1238                 return rc1;
1239         if (rc2)
1240                 return rc2;
1241         return rc3;
1242 }
1243
1244 static int qeth_clear_channels(struct qeth_card *card)
1245 {
1246         int rc1 = 0, rc2 = 0, rc3 = 0;
1247
1248         QETH_CARD_TEXT(card, 3, "clearchs");
1249         rc1 = qeth_clear_channel(&card->read);
1250         rc2 = qeth_clear_channel(&card->write);
1251         rc3 = qeth_clear_channel(&card->data);
1252         if (rc1)
1253                 return rc1;
1254         if (rc2)
1255                 return rc2;
1256         return rc3;
1257 }
1258
1259 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1260 {
1261         int rc = 0;
1262
1263         QETH_CARD_TEXT(card, 3, "clhacrd");
1264
1265         if (halt)
1266                 rc = qeth_halt_channels(card);
1267         if (rc)
1268                 return rc;
1269         return qeth_clear_channels(card);
1270 }
1271
1272 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1273 {
1274         int rc = 0;
1275
1276         QETH_CARD_TEXT(card, 3, "qdioclr");
1277         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1278                 QETH_QDIO_CLEANING)) {
1279         case QETH_QDIO_ESTABLISHED:
1280                 if (card->info.type == QETH_CARD_TYPE_IQD)
1281                         rc = qdio_shutdown(CARD_DDEV(card),
1282                                 QDIO_FLAG_CLEANUP_USING_HALT);
1283                 else
1284                         rc = qdio_shutdown(CARD_DDEV(card),
1285                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1286                 if (rc)
1287                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1288                 qdio_free(CARD_DDEV(card));
1289                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1290                 break;
1291         case QETH_QDIO_CLEANING:
1292                 return rc;
1293         default:
1294                 break;
1295         }
1296         rc = qeth_clear_halt_card(card, use_halt);
1297         if (rc)
1298                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1299         card->state = CARD_STATE_DOWN;
1300         return rc;
1301 }
1302 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1303
1304 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1305                                int *length)
1306 {
1307         struct ciw *ciw;
1308         char *rcd_buf;
1309         int ret;
1310         struct qeth_channel *channel = &card->data;
1311         unsigned long flags;
1312
1313         /*
1314          * scan for RCD command in extended SenseID data
1315          */
1316         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1317         if (!ciw || ciw->cmd == 0)
1318                 return -EOPNOTSUPP;
1319         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1320         if (!rcd_buf)
1321                 return -ENOMEM;
1322
1323         channel->ccw.cmd_code = ciw->cmd;
1324         channel->ccw.cda = (__u32) __pa(rcd_buf);
1325         channel->ccw.count = ciw->count;
1326         channel->ccw.flags = CCW_FLAG_SLI;
1327         channel->state = CH_STATE_RCD;
1328         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1329         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1330                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1331                                        QETH_RCD_TIMEOUT);
1332         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1333         if (!ret)
1334                 wait_event(card->wait_q,
1335                            (channel->state == CH_STATE_RCD_DONE ||
1336                             channel->state == CH_STATE_DOWN));
1337         if (channel->state == CH_STATE_DOWN)
1338                 ret = -EIO;
1339         else
1340                 channel->state = CH_STATE_DOWN;
1341         if (ret) {
1342                 kfree(rcd_buf);
1343                 *buffer = NULL;
1344                 *length = 0;
1345         } else {
1346                 *length = ciw->count;
1347                 *buffer = rcd_buf;
1348         }
1349         return ret;
1350 }
1351
1352 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1353 {
1354         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1355         card->info.chpid = prcd[30];
1356         card->info.unit_addr2 = prcd[31];
1357         card->info.cula = prcd[63];
1358         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1359                                (prcd[0x11] == _ascebc['M']));
1360 }
1361
1362 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1363 {
1364         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1365
1366         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1367                 card->info.blkt.time_total = 250;
1368                 card->info.blkt.inter_packet = 5;
1369                 card->info.blkt.inter_packet_jumbo = 15;
1370         } else {
1371                 card->info.blkt.time_total = 0;
1372                 card->info.blkt.inter_packet = 0;
1373                 card->info.blkt.inter_packet_jumbo = 0;
1374         }
1375 }
1376
1377 static void qeth_init_tokens(struct qeth_card *card)
1378 {
1379         card->token.issuer_rm_w = 0x00010103UL;
1380         card->token.cm_filter_w = 0x00010108UL;
1381         card->token.cm_connection_w = 0x0001010aUL;
1382         card->token.ulp_filter_w = 0x0001010bUL;
1383         card->token.ulp_connection_w = 0x0001010dUL;
1384 }
1385
1386 static void qeth_init_func_level(struct qeth_card *card)
1387 {
1388         switch (card->info.type) {
1389         case QETH_CARD_TYPE_IQD:
1390                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1391                 break;
1392         case QETH_CARD_TYPE_OSD:
1393         case QETH_CARD_TYPE_OSN:
1394                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1395                 break;
1396         default:
1397                 break;
1398         }
1399 }
1400
1401 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1402                 void (*idx_reply_cb)(struct qeth_channel *,
1403                         struct qeth_cmd_buffer *))
1404 {
1405         struct qeth_cmd_buffer *iob;
1406         unsigned long flags;
1407         int rc;
1408         struct qeth_card *card;
1409
1410         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1411         card = CARD_FROM_CDEV(channel->ccwdev);
1412         iob = qeth_get_buffer(channel);
1413         iob->callback = idx_reply_cb;
1414         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1415         channel->ccw.count = QETH_BUFSIZE;
1416         channel->ccw.cda = (__u32) __pa(iob->data);
1417
1418         wait_event(card->wait_q,
1419                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1420         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1421         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1422         rc = ccw_device_start(channel->ccwdev,
1423                               &channel->ccw, (addr_t) iob, 0, 0);
1424         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1425
1426         if (rc) {
1427                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1428                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1429                 atomic_set(&channel->irq_pending, 0);
1430                 wake_up(&card->wait_q);
1431                 return rc;
1432         }
1433         rc = wait_event_interruptible_timeout(card->wait_q,
1434                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1435         if (rc == -ERESTARTSYS)
1436                 return rc;
1437         if (channel->state != CH_STATE_UP) {
1438                 rc = -ETIME;
1439                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1440                 qeth_clear_cmd_buffers(channel);
1441         } else
1442                 rc = 0;
1443         return rc;
1444 }
1445
1446 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1447                 void (*idx_reply_cb)(struct qeth_channel *,
1448                         struct qeth_cmd_buffer *))
1449 {
1450         struct qeth_card *card;
1451         struct qeth_cmd_buffer *iob;
1452         unsigned long flags;
1453         __u16 temp;
1454         __u8 tmp;
1455         int rc;
1456         struct ccw_dev_id temp_devid;
1457
1458         card = CARD_FROM_CDEV(channel->ccwdev);
1459
1460         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1461
1462         iob = qeth_get_buffer(channel);
1463         iob->callback = idx_reply_cb;
1464         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1465         channel->ccw.count = IDX_ACTIVATE_SIZE;
1466         channel->ccw.cda = (__u32) __pa(iob->data);
1467         if (channel == &card->write) {
1468                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1469                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1470                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1471                 card->seqno.trans_hdr++;
1472         } else {
1473                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1474                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1475                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1476         }
1477         tmp = ((__u8)card->info.portno) | 0x80;
1478         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1479         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1480                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1481         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1482                &card->info.func_level, sizeof(__u16));
1483         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1484         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1485         temp = (card->info.cula << 8) + card->info.unit_addr2;
1486         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1487
1488         wait_event(card->wait_q,
1489                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1490         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1491         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1492         rc = ccw_device_start(channel->ccwdev,
1493                               &channel->ccw, (addr_t) iob, 0, 0);
1494         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1495
1496         if (rc) {
1497                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1498                         rc);
1499                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1500                 atomic_set(&channel->irq_pending, 0);
1501                 wake_up(&card->wait_q);
1502                 return rc;
1503         }
1504         rc = wait_event_interruptible_timeout(card->wait_q,
1505                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1506         if (rc == -ERESTARTSYS)
1507                 return rc;
1508         if (channel->state != CH_STATE_ACTIVATING) {
1509                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1510                         " failed to recover an error on the device\n");
1511                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1512                         dev_name(&channel->ccwdev->dev));
1513                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1514                 qeth_clear_cmd_buffers(channel);
1515                 return -ETIME;
1516         }
1517         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1518 }
1519
1520 static int qeth_peer_func_level(int level)
1521 {
1522         if ((level & 0xff) == 8)
1523                 return (level & 0xff) + 0x400;
1524         if (((level >> 8) & 3) == 1)
1525                 return (level & 0xff) + 0x200;
1526         return level;
1527 }
1528
1529 static void qeth_idx_write_cb(struct qeth_channel *channel,
1530                 struct qeth_cmd_buffer *iob)
1531 {
1532         struct qeth_card *card;
1533         __u16 temp;
1534
1535         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1536
1537         if (channel->state == CH_STATE_DOWN) {
1538                 channel->state = CH_STATE_ACTIVATING;
1539                 goto out;
1540         }
1541         card = CARD_FROM_CDEV(channel->ccwdev);
1542
1543         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1544                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1545                         dev_err(&card->write.ccwdev->dev,
1546                                 "The adapter is used exclusively by another "
1547                                 "host\n");
1548                 else
1549                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1550                                 " negative reply\n",
1551                                 dev_name(&card->write.ccwdev->dev));
1552                 goto out;
1553         }
1554         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1555         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1556                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1557                         "function level mismatch (sent: 0x%x, received: "
1558                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1559                         card->info.func_level, temp);
1560                 goto out;
1561         }
1562         channel->state = CH_STATE_UP;
1563 out:
1564         qeth_release_buffer(channel, iob);
1565 }
1566
1567 static void qeth_idx_read_cb(struct qeth_channel *channel,
1568                 struct qeth_cmd_buffer *iob)
1569 {
1570         struct qeth_card *card;
1571         __u16 temp;
1572
1573         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1574         if (channel->state == CH_STATE_DOWN) {
1575                 channel->state = CH_STATE_ACTIVATING;
1576                 goto out;
1577         }
1578
1579         card = CARD_FROM_CDEV(channel->ccwdev);
1580         if (qeth_check_idx_response(card, iob->data))
1581                         goto out;
1582
1583         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1584                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1585                 case QETH_IDX_ACT_ERR_EXCL:
1586                         dev_err(&card->write.ccwdev->dev,
1587                                 "The adapter is used exclusively by another "
1588                                 "host\n");
1589                         break;
1590                 case QETH_IDX_ACT_ERR_AUTH:
1591                 case QETH_IDX_ACT_ERR_AUTH_USER:
1592                         dev_err(&card->read.ccwdev->dev,
1593                                 "Setting the device online failed because of "
1594                                 "insufficient authorization\n");
1595                         break;
1596                 default:
1597                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1598                                 " negative reply\n",
1599                                 dev_name(&card->read.ccwdev->dev));
1600                 }
1601                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1602                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1603                 goto out;
1604         }
1605
1606 /**
1607  *  * temporary fix for microcode bug
1608  *   * to revert it,replace OR by AND
1609  *    */
1610         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1611              (card->info.type == QETH_CARD_TYPE_OSD))
1612                 card->info.portname_required = 1;
1613
1614         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1615         if (temp != qeth_peer_func_level(card->info.func_level)) {
1616                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1617                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1618                         dev_name(&card->read.ccwdev->dev),
1619                         card->info.func_level, temp);
1620                 goto out;
1621         }
1622         memcpy(&card->token.issuer_rm_r,
1623                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1624                QETH_MPC_TOKEN_LENGTH);
1625         memcpy(&card->info.mcl_level[0],
1626                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1627         channel->state = CH_STATE_UP;
1628 out:
1629         qeth_release_buffer(channel, iob);
1630 }
1631
1632 void qeth_prepare_control_data(struct qeth_card *card, int len,
1633                 struct qeth_cmd_buffer *iob)
1634 {
1635         qeth_setup_ccw(&card->write, iob->data, len);
1636         iob->callback = qeth_release_buffer;
1637
1638         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1639                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1640         card->seqno.trans_hdr++;
1641         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1642                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1643         card->seqno.pdu_hdr++;
1644         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1645                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1646         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1647 }
1648 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1649
1650 int qeth_send_control_data(struct qeth_card *card, int len,
1651                 struct qeth_cmd_buffer *iob,
1652                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1653                         unsigned long),
1654                 void *reply_param)
1655 {
1656         int rc;
1657         unsigned long flags;
1658         struct qeth_reply *reply = NULL;
1659         unsigned long timeout, event_timeout;
1660         struct qeth_ipa_cmd *cmd;
1661
1662         QETH_CARD_TEXT(card, 2, "sendctl");
1663
1664         if (card->read_or_write_problem) {
1665                 qeth_release_buffer(iob->channel, iob);
1666                 return -EIO;
1667         }
1668         reply = qeth_alloc_reply(card);
1669         if (!reply) {
1670                 return -ENOMEM;
1671         }
1672         reply->callback = reply_cb;
1673         reply->param = reply_param;
1674         if (card->state == CARD_STATE_DOWN)
1675                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1676         else
1677                 reply->seqno = card->seqno.ipa++;
1678         init_waitqueue_head(&reply->wait_q);
1679         spin_lock_irqsave(&card->lock, flags);
1680         list_add_tail(&reply->list, &card->cmd_waiter_list);
1681         spin_unlock_irqrestore(&card->lock, flags);
1682         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1683
1684         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1685         qeth_prepare_control_data(card, len, iob);
1686
1687         if (IS_IPA(iob->data))
1688                 event_timeout = QETH_IPA_TIMEOUT;
1689         else
1690                 event_timeout = QETH_TIMEOUT;
1691         timeout = jiffies + event_timeout;
1692
1693         QETH_CARD_TEXT(card, 6, "noirqpnd");
1694         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1695         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1696                               (addr_t) iob, 0, 0);
1697         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1698         if (rc) {
1699                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1700                         "ccw_device_start rc = %i\n",
1701                         dev_name(&card->write.ccwdev->dev), rc);
1702                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1703                 spin_lock_irqsave(&card->lock, flags);
1704                 list_del_init(&reply->list);
1705                 qeth_put_reply(reply);
1706                 spin_unlock_irqrestore(&card->lock, flags);
1707                 qeth_release_buffer(iob->channel, iob);
1708                 atomic_set(&card->write.irq_pending, 0);
1709                 wake_up(&card->wait_q);
1710                 return rc;
1711         }
1712
1713         /* we have only one long running ipassist, since we can ensure
1714            process context of this command we can sleep */
1715         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1716         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1717             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1718                 if (!wait_event_timeout(reply->wait_q,
1719                     atomic_read(&reply->received), event_timeout))
1720                         goto time_err;
1721         } else {
1722                 while (!atomic_read(&reply->received)) {
1723                         if (time_after(jiffies, timeout))
1724                                 goto time_err;
1725                         cpu_relax();
1726                 };
1727         }
1728
1729         rc = reply->rc;
1730         qeth_put_reply(reply);
1731         return rc;
1732
1733 time_err:
1734         spin_lock_irqsave(&reply->card->lock, flags);
1735         list_del_init(&reply->list);
1736         spin_unlock_irqrestore(&reply->card->lock, flags);
1737         reply->rc = -ETIME;
1738         atomic_inc(&reply->received);
1739         atomic_set(&card->write.irq_pending, 0);
1740         qeth_release_buffer(iob->channel, iob);
1741         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
1742         wake_up(&reply->wait_q);
1743         rc = reply->rc;
1744         qeth_put_reply(reply);
1745         return rc;
1746 }
1747 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1748
1749 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1750                 unsigned long data)
1751 {
1752         struct qeth_cmd_buffer *iob;
1753
1754         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1755
1756         iob = (struct qeth_cmd_buffer *) data;
1757         memcpy(&card->token.cm_filter_r,
1758                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1759                QETH_MPC_TOKEN_LENGTH);
1760         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1761         return 0;
1762 }
1763
1764 static int qeth_cm_enable(struct qeth_card *card)
1765 {
1766         int rc;
1767         struct qeth_cmd_buffer *iob;
1768
1769         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1770
1771         iob = qeth_wait_for_buffer(&card->write);
1772         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1773         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1774                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1775         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1776                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1777
1778         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1779                                     qeth_cm_enable_cb, NULL);
1780         return rc;
1781 }
1782
1783 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1784                 unsigned long data)
1785 {
1786
1787         struct qeth_cmd_buffer *iob;
1788
1789         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1790
1791         iob = (struct qeth_cmd_buffer *) data;
1792         memcpy(&card->token.cm_connection_r,
1793                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1794                QETH_MPC_TOKEN_LENGTH);
1795         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1796         return 0;
1797 }
1798
1799 static int qeth_cm_setup(struct qeth_card *card)
1800 {
1801         int rc;
1802         struct qeth_cmd_buffer *iob;
1803
1804         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1805
1806         iob = qeth_wait_for_buffer(&card->write);
1807         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1808         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1809                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1810         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1811                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1812         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1813                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1814         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1815                                     qeth_cm_setup_cb, NULL);
1816         return rc;
1817
1818 }
1819
1820 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1821 {
1822         switch (card->info.type) {
1823         case QETH_CARD_TYPE_UNKNOWN:
1824                 return 1500;
1825         case QETH_CARD_TYPE_IQD:
1826                 return card->info.max_mtu;
1827         case QETH_CARD_TYPE_OSD:
1828                 switch (card->info.link_type) {
1829                 case QETH_LINK_TYPE_HSTR:
1830                 case QETH_LINK_TYPE_LANE_TR:
1831                         return 2000;
1832                 default:
1833                         return 1492;
1834                 }
1835         case QETH_CARD_TYPE_OSM:
1836         case QETH_CARD_TYPE_OSX:
1837                 return 1492;
1838         default:
1839                 return 1500;
1840         }
1841 }
1842
1843 static inline int qeth_get_max_mtu_for_card(int cardtype)
1844 {
1845         switch (cardtype) {
1846
1847         case QETH_CARD_TYPE_UNKNOWN:
1848         case QETH_CARD_TYPE_OSD:
1849         case QETH_CARD_TYPE_OSN:
1850         case QETH_CARD_TYPE_OSM:
1851         case QETH_CARD_TYPE_OSX:
1852                 return 61440;
1853         case QETH_CARD_TYPE_IQD:
1854                 return 57344;
1855         default:
1856                 return 1500;
1857         }
1858 }
1859
1860 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1861 {
1862         switch (cardtype) {
1863         case QETH_CARD_TYPE_IQD:
1864                 return 1;
1865         default:
1866                 return 0;
1867         }
1868 }
1869
1870 static inline int qeth_get_mtu_outof_framesize(int framesize)
1871 {
1872         switch (framesize) {
1873         case 0x4000:
1874                 return 8192;
1875         case 0x6000:
1876                 return 16384;
1877         case 0xa000:
1878                 return 32768;
1879         case 0xffff:
1880                 return 57344;
1881         default:
1882                 return 0;
1883         }
1884 }
1885
1886 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1887 {
1888         switch (card->info.type) {
1889         case QETH_CARD_TYPE_OSD:
1890         case QETH_CARD_TYPE_OSM:
1891         case QETH_CARD_TYPE_OSX:
1892                 return ((mtu >= 576) && (mtu <= 61440));
1893         case QETH_CARD_TYPE_IQD:
1894                 return ((mtu >= 576) &&
1895                         (mtu <= card->info.max_mtu + 4096 - 32));
1896         case QETH_CARD_TYPE_OSN:
1897         case QETH_CARD_TYPE_UNKNOWN:
1898         default:
1899                 return 1;
1900         }
1901 }
1902
1903 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1904                 unsigned long data)
1905 {
1906
1907         __u16 mtu, framesize;
1908         __u16 len;
1909         __u8 link_type;
1910         struct qeth_cmd_buffer *iob;
1911
1912         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1913
1914         iob = (struct qeth_cmd_buffer *) data;
1915         memcpy(&card->token.ulp_filter_r,
1916                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1917                QETH_MPC_TOKEN_LENGTH);
1918         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1919                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1920                 mtu = qeth_get_mtu_outof_framesize(framesize);
1921                 if (!mtu) {
1922                         iob->rc = -EINVAL;
1923                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1924                         return 0;
1925                 }
1926                 card->info.max_mtu = mtu;
1927                 card->info.initial_mtu = mtu;
1928                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1929         } else {
1930                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1931                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1932                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1933         }
1934
1935         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1936         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1937                 memcpy(&link_type,
1938                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1939                 card->info.link_type = link_type;
1940         } else
1941                 card->info.link_type = 0;
1942         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1943         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1944         return 0;
1945 }
1946
1947 static int qeth_ulp_enable(struct qeth_card *card)
1948 {
1949         int rc;
1950         char prot_type;
1951         struct qeth_cmd_buffer *iob;
1952
1953         /*FIXME: trace view callbacks*/
1954         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1955
1956         iob = qeth_wait_for_buffer(&card->write);
1957         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1958
1959         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1960                 (__u8) card->info.portno;
1961         if (card->options.layer2)
1962                 if (card->info.type == QETH_CARD_TYPE_OSN)
1963                         prot_type = QETH_PROT_OSN2;
1964                 else
1965                         prot_type = QETH_PROT_LAYER2;
1966         else
1967                 prot_type = QETH_PROT_TCPIP;
1968
1969         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1970         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1971                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1972         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1973                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1974         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1975                card->info.portname, 9);
1976         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1977                                     qeth_ulp_enable_cb, NULL);
1978         return rc;
1979
1980 }
1981
1982 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1983                 unsigned long data)
1984 {
1985         struct qeth_cmd_buffer *iob;
1986         int rc = 0;
1987
1988         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1989
1990         iob = (struct qeth_cmd_buffer *) data;
1991         memcpy(&card->token.ulp_connection_r,
1992                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1993                QETH_MPC_TOKEN_LENGTH);
1994         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1995                      3)) {
1996                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1997                 dev_err(&card->gdev->dev, "A connection could not be "
1998                         "established because of an OLM limit\n");
1999                 iob->rc = -EMLINK;
2000         }
2001         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2002         return rc;
2003 }
2004
2005 static int qeth_ulp_setup(struct qeth_card *card)
2006 {
2007         int rc;
2008         __u16 temp;
2009         struct qeth_cmd_buffer *iob;
2010         struct ccw_dev_id dev_id;
2011
2012         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2013
2014         iob = qeth_wait_for_buffer(&card->write);
2015         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2016
2017         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2018                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2019         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2020                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2021         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2022                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2023
2024         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2025         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2026         temp = (card->info.cula << 8) + card->info.unit_addr2;
2027         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2028         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2029                                     qeth_ulp_setup_cb, NULL);
2030         return rc;
2031 }
2032
2033 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2034 {
2035         int i, j;
2036
2037         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2038
2039         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2040                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2041                 return 0;
2042
2043         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2044                                   GFP_KERNEL);
2045         if (!card->qdio.in_q)
2046                 goto out_nomem;
2047         QETH_DBF_TEXT(SETUP, 2, "inq");
2048         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2049         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2050         /* give inbound qeth_qdio_buffers their qdio_buffers */
2051         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2052                 card->qdio.in_q->bufs[i].buffer =
2053                         &card->qdio.in_q->qdio_bufs[i];
2054         /* inbound buffer pool */
2055         if (qeth_alloc_buffer_pool(card))
2056                 goto out_freeinq;
2057         /* outbound */
2058         card->qdio.out_qs =
2059                 kmalloc(card->qdio.no_out_queues *
2060                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2061         if (!card->qdio.out_qs)
2062                 goto out_freepool;
2063         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2064                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2065                                                GFP_KERNEL);
2066                 if (!card->qdio.out_qs[i])
2067                         goto out_freeoutq;
2068                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2069                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2070                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2071                 card->qdio.out_qs[i]->queue_no = i;
2072                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2073                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2074                         card->qdio.out_qs[i]->bufs[j].buffer =
2075                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2076                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2077                                             skb_list);
2078                         lockdep_set_class(
2079                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2080                                 &qdio_out_skb_queue_key);
2081                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2082                 }
2083         }
2084         return 0;
2085
2086 out_freeoutq:
2087         while (i > 0)
2088                 kfree(card->qdio.out_qs[--i]);
2089         kfree(card->qdio.out_qs);
2090         card->qdio.out_qs = NULL;
2091 out_freepool:
2092         qeth_free_buffer_pool(card);
2093 out_freeinq:
2094         kfree(card->qdio.in_q);
2095         card->qdio.in_q = NULL;
2096 out_nomem:
2097         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2098         return -ENOMEM;
2099 }
2100
2101 static void qeth_create_qib_param_field(struct qeth_card *card,
2102                 char *param_field)
2103 {
2104
2105         param_field[0] = _ascebc['P'];
2106         param_field[1] = _ascebc['C'];
2107         param_field[2] = _ascebc['I'];
2108         param_field[3] = _ascebc['T'];
2109         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2110         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2111         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2112 }
2113
2114 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2115                 char *param_field)
2116 {
2117         param_field[16] = _ascebc['B'];
2118         param_field[17] = _ascebc['L'];
2119         param_field[18] = _ascebc['K'];
2120         param_field[19] = _ascebc['T'];
2121         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2122         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2123         *((unsigned int *) (&param_field[28])) =
2124                 card->info.blkt.inter_packet_jumbo;
2125 }
2126
2127 static int qeth_qdio_activate(struct qeth_card *card)
2128 {
2129         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2130         return qdio_activate(CARD_DDEV(card));
2131 }
2132
2133 static int qeth_dm_act(struct qeth_card *card)
2134 {
2135         int rc;
2136         struct qeth_cmd_buffer *iob;
2137
2138         QETH_DBF_TEXT(SETUP, 2, "dmact");
2139
2140         iob = qeth_wait_for_buffer(&card->write);
2141         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2142
2143         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2144                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2145         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2146                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2147         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2148         return rc;
2149 }
2150
2151 static int qeth_mpc_initialize(struct qeth_card *card)
2152 {
2153         int rc;
2154
2155         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2156
2157         rc = qeth_issue_next_read(card);
2158         if (rc) {
2159                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2160                 return rc;
2161         }
2162         rc = qeth_cm_enable(card);
2163         if (rc) {
2164                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2165                 goto out_qdio;
2166         }
2167         rc = qeth_cm_setup(card);
2168         if (rc) {
2169                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2170                 goto out_qdio;
2171         }
2172         rc = qeth_ulp_enable(card);
2173         if (rc) {
2174                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2175                 goto out_qdio;
2176         }
2177         rc = qeth_ulp_setup(card);
2178         if (rc) {
2179                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2180                 goto out_qdio;
2181         }
2182         rc = qeth_alloc_qdio_buffers(card);
2183         if (rc) {
2184                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2185                 goto out_qdio;
2186         }
2187         rc = qeth_qdio_establish(card);
2188         if (rc) {
2189                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2190                 qeth_free_qdio_buffers(card);
2191                 goto out_qdio;
2192         }
2193         rc = qeth_qdio_activate(card);
2194         if (rc) {
2195                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2196                 goto out_qdio;
2197         }
2198         rc = qeth_dm_act(card);
2199         if (rc) {
2200                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2201                 goto out_qdio;
2202         }
2203
2204         return 0;
2205 out_qdio:
2206         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2207         return rc;
2208 }
2209
2210 static void qeth_print_status_with_portname(struct qeth_card *card)
2211 {
2212         char dbf_text[15];
2213         int i;
2214
2215         sprintf(dbf_text, "%s", card->info.portname + 1);
2216         for (i = 0; i < 8; i++)
2217                 dbf_text[i] =
2218                         (char) _ebcasc[(__u8) dbf_text[i]];
2219         dbf_text[8] = 0;
2220         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2221                "with link type %s (portname: %s)\n",
2222                qeth_get_cardname(card),
2223                (card->info.mcl_level[0]) ? " (level: " : "",
2224                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2225                (card->info.mcl_level[0]) ? ")" : "",
2226                qeth_get_cardname_short(card),
2227                dbf_text);
2228
2229 }
2230
2231 static void qeth_print_status_no_portname(struct qeth_card *card)
2232 {
2233         if (card->info.portname[0])
2234                 dev_info(&card->gdev->dev, "Device is a%s "
2235                        "card%s%s%s\nwith link type %s "
2236                        "(no portname needed by interface).\n",
2237                        qeth_get_cardname(card),
2238                        (card->info.mcl_level[0]) ? " (level: " : "",
2239                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2240                        (card->info.mcl_level[0]) ? ")" : "",
2241                        qeth_get_cardname_short(card));
2242         else
2243                 dev_info(&card->gdev->dev, "Device is a%s "
2244                        "card%s%s%s\nwith link type %s.\n",
2245                        qeth_get_cardname(card),
2246                        (card->info.mcl_level[0]) ? " (level: " : "",
2247                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2248                        (card->info.mcl_level[0]) ? ")" : "",
2249                        qeth_get_cardname_short(card));
2250 }
2251
2252 void qeth_print_status_message(struct qeth_card *card)
2253 {
2254         switch (card->info.type) {
2255         case QETH_CARD_TYPE_OSD:
2256         case QETH_CARD_TYPE_OSM:
2257         case QETH_CARD_TYPE_OSX:
2258                 /* VM will use a non-zero first character
2259                  * to indicate a HiperSockets like reporting
2260                  * of the level OSA sets the first character to zero
2261                  * */
2262                 if (!card->info.mcl_level[0]) {
2263                         sprintf(card->info.mcl_level, "%02x%02x",
2264                                 card->info.mcl_level[2],
2265                                 card->info.mcl_level[3]);
2266
2267                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2268                         break;
2269                 }
2270                 /* fallthrough */
2271         case QETH_CARD_TYPE_IQD:
2272                 if ((card->info.guestlan) ||
2273                     (card->info.mcl_level[0] & 0x80)) {
2274                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2275                                 card->info.mcl_level[0]];
2276                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2277                                 card->info.mcl_level[1]];
2278                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2279                                 card->info.mcl_level[2]];
2280                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2281                                 card->info.mcl_level[3]];
2282                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2283                 }
2284                 break;
2285         default:
2286                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2287         }
2288         if (card->info.portname_required)
2289                 qeth_print_status_with_portname(card);
2290         else
2291                 qeth_print_status_no_portname(card);
2292 }
2293 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2294
2295 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2296 {
2297         struct qeth_buffer_pool_entry *entry;
2298
2299         QETH_CARD_TEXT(card, 5, "inwrklst");
2300
2301         list_for_each_entry(entry,
2302                             &card->qdio.init_pool.entry_list, init_list) {
2303                 qeth_put_buffer_pool_entry(card, entry);
2304         }
2305 }
2306
2307 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2308                 struct qeth_card *card)
2309 {
2310         struct list_head *plh;
2311         struct qeth_buffer_pool_entry *entry;
2312         int i, free;
2313         struct page *page;
2314
2315         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2316                 return NULL;
2317
2318         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2319                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2320                 free = 1;
2321                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2322                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2323                                 free = 0;
2324                                 break;
2325                         }
2326                 }
2327                 if (free) {
2328                         list_del_init(&entry->list);
2329                         return entry;
2330                 }
2331         }
2332
2333         /* no free buffer in pool so take first one and swap pages */
2334         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2335                         struct qeth_buffer_pool_entry, list);
2336         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2337                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2338                         page = alloc_page(GFP_ATOMIC);
2339                         if (!page) {
2340                                 return NULL;
2341                         } else {
2342                                 free_page((unsigned long)entry->elements[i]);
2343                                 entry->elements[i] = page_address(page);
2344                                 if (card->options.performance_stats)
2345                                         card->perf_stats.sg_alloc_page_rx++;
2346                         }
2347                 }
2348         }
2349         list_del_init(&entry->list);
2350         return entry;
2351 }
2352
2353 static int qeth_init_input_buffer(struct qeth_card *card,
2354                 struct qeth_qdio_buffer *buf)
2355 {
2356         struct qeth_buffer_pool_entry *pool_entry;
2357         int i;
2358
2359         pool_entry = qeth_find_free_buffer_pool_entry(card);
2360         if (!pool_entry)
2361                 return 1;
2362
2363         /*
2364          * since the buffer is accessed only from the input_tasklet
2365          * there shouldn't be a need to synchronize; also, since we use
2366          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2367          * buffers
2368          */
2369
2370         buf->pool_entry = pool_entry;
2371         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2372                 buf->buffer->element[i].length = PAGE_SIZE;
2373                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2374                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2375                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2376                 else
2377                         buf->buffer->element[i].flags = 0;
2378         }
2379         return 0;
2380 }
2381
2382 int qeth_init_qdio_queues(struct qeth_card *card)
2383 {
2384         int i, j;
2385         int rc;
2386
2387         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2388
2389         /* inbound queue */
2390         memset(card->qdio.in_q->qdio_bufs, 0,
2391                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2392         qeth_initialize_working_pool_list(card);
2393         /*give only as many buffers to hardware as we have buffer pool entries*/
2394         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2395                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2396         card->qdio.in_q->next_buf_to_init =
2397                 card->qdio.in_buf_pool.buf_count - 1;
2398         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2399                      card->qdio.in_buf_pool.buf_count - 1);
2400         if (rc) {
2401                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2402                 return rc;
2403         }
2404         /* outbound queue */
2405         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2406                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2407                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2408                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2409                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2410                                         &card->qdio.out_qs[i]->bufs[j]);
2411                 }
2412                 card->qdio.out_qs[i]->card = card;
2413                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2414                 card->qdio.out_qs[i]->do_pack = 0;
2415                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2416                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2417                 atomic_set(&card->qdio.out_qs[i]->state,
2418                            QETH_OUT_Q_UNLOCKED);
2419         }
2420         return 0;
2421 }
2422 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2423
2424 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2425 {
2426         switch (link_type) {
2427         case QETH_LINK_TYPE_HSTR:
2428                 return 2;
2429         default:
2430                 return 1;
2431         }
2432 }
2433
2434 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2435                 struct qeth_ipa_cmd *cmd, __u8 command,
2436                 enum qeth_prot_versions prot)
2437 {
2438         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2439         cmd->hdr.command = command;
2440         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2441         cmd->hdr.seqno = card->seqno.ipa;
2442         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2443         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2444         if (card->options.layer2)
2445                 cmd->hdr.prim_version_no = 2;
2446         else
2447                 cmd->hdr.prim_version_no = 1;
2448         cmd->hdr.param_count = 1;
2449         cmd->hdr.prot_version = prot;
2450         cmd->hdr.ipa_supported = 0;
2451         cmd->hdr.ipa_enabled = 0;
2452 }
2453
2454 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2455                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2456 {
2457         struct qeth_cmd_buffer *iob;
2458         struct qeth_ipa_cmd *cmd;
2459
2460         iob = qeth_wait_for_buffer(&card->write);
2461         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2462         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2463
2464         return iob;
2465 }
2466 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2467
2468 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2469                 char prot_type)
2470 {
2471         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2472         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2473         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2474                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2475 }
2476 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2477
2478 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2479                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2480                         unsigned long),
2481                 void *reply_param)
2482 {
2483         int rc;
2484         char prot_type;
2485
2486         QETH_CARD_TEXT(card, 4, "sendipa");
2487
2488         if (card->options.layer2)
2489                 if (card->info.type == QETH_CARD_TYPE_OSN)
2490                         prot_type = QETH_PROT_OSN2;
2491                 else
2492                         prot_type = QETH_PROT_LAYER2;
2493         else
2494                 prot_type = QETH_PROT_TCPIP;
2495         qeth_prepare_ipa_cmd(card, iob, prot_type);
2496         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2497                                                 iob, reply_cb, reply_param);
2498         if (rc == -ETIME) {
2499                 qeth_clear_ipacmd_list(card);
2500                 qeth_schedule_recovery(card);
2501         }
2502         return rc;
2503 }
2504 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2505
2506 static int qeth_send_startstoplan(struct qeth_card *card,
2507                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2508 {
2509         int rc;
2510         struct qeth_cmd_buffer *iob;
2511
2512         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2513         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2514
2515         return rc;
2516 }
2517
2518 int qeth_send_startlan(struct qeth_card *card)
2519 {
2520         int rc;
2521
2522         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2523
2524         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2525         return rc;
2526 }
2527 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2528
2529 int qeth_send_stoplan(struct qeth_card *card)
2530 {
2531         int rc = 0;
2532
2533         /*
2534          * TODO: according to the IPA format document page 14,
2535          * TCP/IP (we!) never issue a STOPLAN
2536          * is this right ?!?
2537          */
2538         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2539
2540         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2541         return rc;
2542 }
2543 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2544
2545 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2546                 struct qeth_reply *reply, unsigned long data)
2547 {
2548         struct qeth_ipa_cmd *cmd;
2549
2550         QETH_CARD_TEXT(card, 4, "defadpcb");
2551
2552         cmd = (struct qeth_ipa_cmd *) data;
2553         if (cmd->hdr.return_code == 0)
2554                 cmd->hdr.return_code =
2555                         cmd->data.setadapterparms.hdr.return_code;
2556         return 0;
2557 }
2558 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2559
2560 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2561                 struct qeth_reply *reply, unsigned long data)
2562 {
2563         struct qeth_ipa_cmd *cmd;
2564
2565         QETH_CARD_TEXT(card, 3, "quyadpcb");
2566
2567         cmd = (struct qeth_ipa_cmd *) data;
2568         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2569                 card->info.link_type =
2570                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2571                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2572         }
2573         card->options.adp.supported_funcs =
2574                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2575         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2576 }
2577
2578 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2579                 __u32 command, __u32 cmdlen)
2580 {
2581         struct qeth_cmd_buffer *iob;
2582         struct qeth_ipa_cmd *cmd;
2583
2584         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2585                                      QETH_PROT_IPV4);
2586         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2587         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2588         cmd->data.setadapterparms.hdr.command_code = command;
2589         cmd->data.setadapterparms.hdr.used_total = 1;
2590         cmd->data.setadapterparms.hdr.seq_no = 1;
2591
2592         return iob;
2593 }
2594 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2595
2596 int qeth_query_setadapterparms(struct qeth_card *card)
2597 {
2598         int rc;
2599         struct qeth_cmd_buffer *iob;
2600
2601         QETH_CARD_TEXT(card, 3, "queryadp");
2602         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2603                                    sizeof(struct qeth_ipacmd_setadpparms));
2604         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2605         return rc;
2606 }
2607 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2608
2609 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2610                 unsigned int qdio_error, const char *dbftext)
2611 {
2612         if (qdio_error) {
2613                 QETH_CARD_TEXT(card, 2, dbftext);
2614                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2615                                buf->element[15].flags & 0xff);
2616                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2617                                buf->element[14].flags & 0xff);
2618                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2619                 if ((buf->element[15].flags & 0xff) == 0x12) {
2620                         card->stats.rx_dropped++;
2621                         return 0;
2622                 } else
2623                         return 1;
2624         }
2625         return 0;
2626 }
2627 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2628
2629 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2630 {
2631         struct qeth_qdio_q *queue = card->qdio.in_q;
2632         int count;
2633         int i;
2634         int rc;
2635         int newcount = 0;
2636
2637         count = (index < queue->next_buf_to_init)?
2638                 card->qdio.in_buf_pool.buf_count -
2639                 (queue->next_buf_to_init - index) :
2640                 card->qdio.in_buf_pool.buf_count -
2641                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2642         /* only requeue at a certain threshold to avoid SIGAs */
2643         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2644                 for (i = queue->next_buf_to_init;
2645                      i < queue->next_buf_to_init + count; ++i) {
2646                         if (qeth_init_input_buffer(card,
2647                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2648                                 break;
2649                         } else {
2650                                 newcount++;
2651                         }
2652                 }
2653
2654                 if (newcount < count) {
2655                         /* we are in memory shortage so we switch back to
2656                            traditional skb allocation and drop packages */
2657                         atomic_set(&card->force_alloc_skb, 3);
2658                         count = newcount;
2659                 } else {
2660                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2661                 }
2662
2663                 /*
2664                  * according to old code it should be avoided to requeue all
2665                  * 128 buffers in order to benefit from PCI avoidance.
2666                  * this function keeps at least one buffer (the buffer at
2667                  * 'index') un-requeued -> this buffer is the first buffer that
2668                  * will be requeued the next time
2669                  */
2670                 if (card->options.performance_stats) {
2671                         card->perf_stats.inbound_do_qdio_cnt++;
2672                         card->perf_stats.inbound_do_qdio_start_time =
2673                                 qeth_get_micros();
2674                 }
2675                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2676                              queue->next_buf_to_init, count);
2677                 if (card->options.performance_stats)
2678                         card->perf_stats.inbound_do_qdio_time +=
2679                                 qeth_get_micros() -
2680                                 card->perf_stats.inbound_do_qdio_start_time;
2681                 if (rc) {
2682                         dev_warn(&card->gdev->dev,
2683                                 "QDIO reported an error, rc=%i\n", rc);
2684                         QETH_CARD_TEXT(card, 2, "qinberr");
2685                 }
2686                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2687                                           QDIO_MAX_BUFFERS_PER_Q;
2688         }
2689 }
2690 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2691
2692 static int qeth_handle_send_error(struct qeth_card *card,
2693                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2694 {
2695         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2696
2697         QETH_CARD_TEXT(card, 6, "hdsnderr");
2698         if (card->info.type == QETH_CARD_TYPE_IQD) {
2699                 if (sbalf15 == 0) {
2700                         qdio_err = 0;
2701                 } else {
2702                         qdio_err = 1;
2703                 }
2704         }
2705         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2706
2707         if (!qdio_err)
2708                 return QETH_SEND_ERROR_NONE;
2709
2710         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2711                 return QETH_SEND_ERROR_RETRY;
2712
2713         QETH_CARD_TEXT(card, 1, "lnkfail");
2714         QETH_CARD_TEXT_(card, 1, "%04x %02x",
2715                        (u16)qdio_err, (u8)sbalf15);
2716         return QETH_SEND_ERROR_LINK_FAILURE;
2717 }
2718
2719 /*
2720  * Switched to packing state if the number of used buffers on a queue
2721  * reaches a certain limit.
2722  */
2723 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2724 {
2725         if (!queue->do_pack) {
2726                 if (atomic_read(&queue->used_buffers)
2727                     >= QETH_HIGH_WATERMARK_PACK){
2728                         /* switch non-PACKING -> PACKING */
2729                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
2730                         if (queue->card->options.performance_stats)
2731                                 queue->card->perf_stats.sc_dp_p++;
2732                         queue->do_pack = 1;
2733                 }
2734         }
2735 }
2736
2737 /*
2738  * Switches from packing to non-packing mode. If there is a packing
2739  * buffer on the queue this buffer will be prepared to be flushed.
2740  * In that case 1 is returned to inform the caller. If no buffer
2741  * has to be flushed, zero is returned.
2742  */
2743 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2744 {
2745         struct qeth_qdio_out_buffer *buffer;
2746         int flush_count = 0;
2747
2748         if (queue->do_pack) {
2749                 if (atomic_read(&queue->used_buffers)
2750                     <= QETH_LOW_WATERMARK_PACK) {
2751                         /* switch PACKING -> non-PACKING */
2752                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
2753                         if (queue->card->options.performance_stats)
2754                                 queue->card->perf_stats.sc_p_dp++;
2755                         queue->do_pack = 0;
2756                         /* flush packing buffers */
2757                         buffer = &queue->bufs[queue->next_buf_to_fill];
2758                         if ((atomic_read(&buffer->state) ==
2759                                                 QETH_QDIO_BUF_EMPTY) &&
2760                             (buffer->next_element_to_fill > 0)) {
2761                                 atomic_set(&buffer->state,
2762                                                 QETH_QDIO_BUF_PRIMED);
2763                                 flush_count++;
2764                                 queue->next_buf_to_fill =
2765                                         (queue->next_buf_to_fill + 1) %
2766                                         QDIO_MAX_BUFFERS_PER_Q;
2767                         }
2768                 }
2769         }
2770         return flush_count;
2771 }
2772
2773 /*
2774  * Called to flush a packing buffer if no more pci flags are on the queue.
2775  * Checks if there is a packing buffer and prepares it to be flushed.
2776  * In that case returns 1, otherwise zero.
2777  */
2778 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2779 {
2780         struct qeth_qdio_out_buffer *buffer;
2781
2782         buffer = &queue->bufs[queue->next_buf_to_fill];
2783         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2784            (buffer->next_element_to_fill > 0)) {
2785                 /* it's a packing buffer */
2786                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2787                 queue->next_buf_to_fill =
2788                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2789                 return 1;
2790         }
2791         return 0;
2792 }
2793
2794 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2795                                int count)
2796 {
2797         struct qeth_qdio_out_buffer *buf;
2798         int rc;
2799         int i;
2800         unsigned int qdio_flags;
2801
2802         for (i = index; i < index + count; ++i) {
2803                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2804                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2805                                 SBAL_FLAGS_LAST_ENTRY;
2806
2807                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2808                         continue;
2809
2810                 if (!queue->do_pack) {
2811                         if ((atomic_read(&queue->used_buffers) >=
2812                                 (QETH_HIGH_WATERMARK_PACK -
2813                                  QETH_WATERMARK_PACK_FUZZ)) &&
2814                             !atomic_read(&queue->set_pci_flags_count)) {
2815                                 /* it's likely that we'll go to packing
2816                                  * mode soon */
2817                                 atomic_inc(&queue->set_pci_flags_count);
2818                                 buf->buffer->element[0].flags |= 0x40;
2819                         }
2820                 } else {
2821                         if (!atomic_read(&queue->set_pci_flags_count)) {
2822                                 /*
2823                                  * there's no outstanding PCI any more, so we
2824                                  * have to request a PCI to be sure the the PCI
2825                                  * will wake at some time in the future then we
2826                                  * can flush packed buffers that might still be
2827                                  * hanging around, which can happen if no
2828                                  * further send was requested by the stack
2829                                  */
2830                                 atomic_inc(&queue->set_pci_flags_count);
2831                                 buf->buffer->element[0].flags |= 0x40;
2832                         }
2833                 }
2834         }
2835
2836         queue->sync_iqdio_error = 0;
2837         queue->card->dev->trans_start = jiffies;
2838         if (queue->card->options.performance_stats) {
2839                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2840                 queue->card->perf_stats.outbound_do_qdio_start_time =
2841                         qeth_get_micros();
2842         }
2843         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2844         if (atomic_read(&queue->set_pci_flags_count))
2845                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2846         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2847                      queue->queue_no, index, count);
2848         if (queue->card->options.performance_stats)
2849                 queue->card->perf_stats.outbound_do_qdio_time +=
2850                         qeth_get_micros() -
2851                         queue->card->perf_stats.outbound_do_qdio_start_time;
2852         if (rc > 0) {
2853                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2854                         queue->sync_iqdio_error = rc & 3;
2855         }
2856         if (rc) {
2857                 queue->card->stats.tx_errors += count;
2858                 /* ignore temporary SIGA errors without busy condition */
2859                 if (rc == QDIO_ERROR_SIGA_TARGET)
2860                         return;
2861                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2862                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2863
2864                 /* this must not happen under normal circumstances. if it
2865                  * happens something is really wrong -> recover */
2866                 qeth_schedule_recovery(queue->card);
2867                 return;
2868         }
2869         atomic_add(count, &queue->used_buffers);
2870         if (queue->card->options.performance_stats)
2871                 queue->card->perf_stats.bufs_sent += count;
2872 }
2873
2874 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2875 {
2876         int index;
2877         int flush_cnt = 0;
2878         int q_was_packing = 0;
2879
2880         /*
2881          * check if weed have to switch to non-packing mode or if
2882          * we have to get a pci flag out on the queue
2883          */
2884         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2885             !atomic_read(&queue->set_pci_flags_count)) {
2886                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2887                                 QETH_OUT_Q_UNLOCKED) {
2888                         /*
2889                          * If we get in here, there was no action in
2890                          * do_send_packet. So, we check if there is a
2891                          * packing buffer to be flushed here.
2892                          */
2893                         netif_stop_queue(queue->card->dev);
2894                         index = queue->next_buf_to_fill;
2895                         q_was_packing = queue->do_pack;
2896                         /* queue->do_pack may change */
2897                         barrier();
2898                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2899                         if (!flush_cnt &&
2900                             !atomic_read(&queue->set_pci_flags_count))
2901                                 flush_cnt +=
2902                                         qeth_flush_buffers_on_no_pci(queue);
2903                         if (queue->card->options.performance_stats &&
2904                             q_was_packing)
2905                                 queue->card->perf_stats.bufs_sent_pack +=
2906                                         flush_cnt;
2907                         if (flush_cnt)
2908                                 qeth_flush_buffers(queue, index, flush_cnt);
2909                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2910                 }
2911         }
2912 }
2913
2914 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
2915                 unsigned long card_ptr)
2916 {
2917         struct qeth_card *card = (struct qeth_card *)card_ptr;
2918
2919         if (card->dev)
2920                 napi_schedule(&card->napi);
2921 }
2922 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
2923
2924 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
2925                 unsigned int queue, int first_element, int count,
2926                 unsigned long card_ptr)
2927 {
2928         struct qeth_card *card = (struct qeth_card *)card_ptr;
2929
2930         if (qdio_err)
2931                 qeth_schedule_recovery(card);
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
2934
2935 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2936                 unsigned int qdio_error, int __queue, int first_element,
2937                 int count, unsigned long card_ptr)
2938 {
2939         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2940         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2941         struct qeth_qdio_out_buffer *buffer;
2942         int i;
2943         unsigned qeth_send_err;
2944
2945         QETH_CARD_TEXT(card, 6, "qdouhdl");
2946         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2947                 QETH_CARD_TEXT(card, 2, "achkcond");
2948                 netif_stop_queue(card->dev);
2949                 qeth_schedule_recovery(card);
2950                 return;
2951         }
2952         if (card->options.performance_stats) {
2953                 card->perf_stats.outbound_handler_cnt++;
2954                 card->perf_stats.outbound_handler_start_time =
2955                         qeth_get_micros();
2956         }
2957         for (i = first_element; i < (first_element + count); ++i) {
2958                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2959                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2960                 __qeth_clear_output_buffer(queue, buffer,
2961                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2962         }
2963         atomic_sub(count, &queue->used_buffers);
2964         /* check if we need to do something on this outbound queue */
2965         if (card->info.type != QETH_CARD_TYPE_IQD)
2966                 qeth_check_outbound_queue(queue);
2967
2968         netif_wake_queue(queue->card->dev);
2969         if (card->options.performance_stats)
2970                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2971                         card->perf_stats.outbound_handler_start_time;
2972 }
2973 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2974
2975 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2976                         int ipv, int cast_type)
2977 {
2978         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
2979                      card->info.type == QETH_CARD_TYPE_OSX))
2980                 return card->qdio.default_out_queue;
2981         switch (card->qdio.no_out_queues) {
2982         case 4:
2983                 if (cast_type && card->info.is_multicast_different)
2984                         return card->info.is_multicast_different &
2985                                 (card->qdio.no_out_queues - 1);
2986                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2987                         const u8 tos = ip_hdr(skb)->tos;
2988
2989                         if (card->qdio.do_prio_queueing ==
2990                                 QETH_PRIO_Q_ING_TOS) {
2991                                 if (tos & IP_TOS_NOTIMPORTANT)
2992                                         return 3;
2993                                 if (tos & IP_TOS_HIGHRELIABILITY)
2994                                         return 2;
2995                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
2996                                         return 1;
2997                                 if (tos & IP_TOS_LOWDELAY)
2998                                         return 0;
2999                         }
3000                         if (card->qdio.do_prio_queueing ==
3001                                 QETH_PRIO_Q_ING_PREC)
3002                                 return 3 - (tos >> 6);
3003                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3004                         /* TODO: IPv6!!! */
3005                 }
3006                 return card->qdio.default_out_queue;
3007         case 1: /* fallthrough for single-out-queue 1920-device */
3008         default:
3009                 return card->qdio.default_out_queue;
3010         }
3011 }
3012 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3013
3014 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3015                      struct sk_buff *skb, int elems)
3016 {
3017         int dlen = skb->len - skb->data_len;
3018         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3019                 PFN_DOWN((unsigned long)skb->data);
3020
3021         elements_needed += skb_shinfo(skb)->nr_frags;
3022         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3023                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3024                         "(Number=%d / Length=%d). Discarded.\n",
3025                         (elements_needed+elems), skb->len);
3026                 return 0;
3027         }
3028         return elements_needed;
3029 }
3030 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3031
3032 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3033 {
3034         int hroom, inpage, rest;
3035
3036         if (((unsigned long)skb->data & PAGE_MASK) !=
3037             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3038                 hroom = skb_headroom(skb);
3039                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3040                 rest = len - inpage;
3041                 if (rest > hroom)
3042                         return 1;
3043                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3044                 skb->data -= rest;
3045                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3046         }
3047         return 0;
3048 }
3049 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3050
3051 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3052         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3053         int offset)
3054 {
3055         int length = skb->len - skb->data_len;
3056         int length_here;
3057         int element;
3058         char *data;
3059         int first_lap, cnt;
3060         struct skb_frag_struct *frag;
3061
3062         element = *next_element_to_fill;
3063         data = skb->data;
3064         first_lap = (is_tso == 0 ? 1 : 0);
3065
3066         if (offset >= 0) {
3067                 data = skb->data + offset;
3068                 length -= offset;
3069                 first_lap = 0;
3070         }
3071
3072         while (length > 0) {
3073                 /* length_here is the remaining amount of data in this page */
3074                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3075                 if (length < length_here)
3076                         length_here = length;
3077
3078                 buffer->element[element].addr = data;
3079                 buffer->element[element].length = length_here;
3080                 length -= length_here;
3081                 if (!length) {
3082                         if (first_lap)
3083                                 if (skb_shinfo(skb)->nr_frags)
3084                                         buffer->element[element].flags =
3085                                                 SBAL_FLAGS_FIRST_FRAG;
3086                                 else
3087                                         buffer->element[element].flags = 0;
3088                         else
3089                                 buffer->element[element].flags =
3090                                     SBAL_FLAGS_MIDDLE_FRAG;
3091                 } else {
3092                         if (first_lap)
3093                                 buffer->element[element].flags =
3094                                     SBAL_FLAGS_FIRST_FRAG;
3095                         else
3096                                 buffer->element[element].flags =
3097                                     SBAL_FLAGS_MIDDLE_FRAG;
3098                 }
3099                 data += length_here;
3100                 element++;
3101                 first_lap = 0;
3102         }
3103
3104         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3105                 frag = &skb_shinfo(skb)->frags[cnt];
3106                 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3107                         + frag->page_offset;
3108                 buffer->element[element].length = frag->size;
3109                 buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG;
3110                 element++;
3111         }
3112
3113         if (buffer->element[element - 1].flags)
3114                 buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG;
3115         *next_element_to_fill = element;
3116 }
3117
3118 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3119                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3120                 struct qeth_hdr *hdr, int offset, int hd_len)
3121 {
3122         struct qdio_buffer *buffer;
3123         int flush_cnt = 0, hdr_len, large_send = 0;
3124
3125         buffer = buf->buffer;
3126         atomic_inc(&skb->users);
3127         skb_queue_tail(&buf->skb_list, skb);
3128
3129         /*check first on TSO ....*/
3130         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3131                 int element = buf->next_element_to_fill;
3132
3133                 hdr_len = sizeof(struct qeth_hdr_tso) +
3134                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3135                 /*fill first buffer entry only with header information */
3136                 buffer->element[element].addr = skb->data;
3137                 buffer->element[element].length = hdr_len;
3138                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3139                 buf->next_element_to_fill++;
3140                 skb->data += hdr_len;
3141                 skb->len  -= hdr_len;
3142                 large_send = 1;
3143         }
3144
3145         if (offset >= 0) {
3146                 int element = buf->next_element_to_fill;
3147                 buffer->element[element].addr = hdr;
3148                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3149                                                         hd_len;
3150                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3151                 buf->is_header[element] = 1;
3152                 buf->next_element_to_fill++;
3153         }
3154
3155         __qeth_fill_buffer(skb, buffer, large_send,
3156                 (int *)&buf->next_element_to_fill, offset);
3157
3158         if (!queue->do_pack) {
3159                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3160                 /* set state to PRIMED -> will be flushed */
3161                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3162                 flush_cnt = 1;
3163         } else {
3164                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3165                 if (queue->card->options.performance_stats)
3166                         queue->card->perf_stats.skbs_sent_pack++;
3167                 if (buf->next_element_to_fill >=
3168                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3169                         /*
3170                          * packed buffer if full -> set state PRIMED
3171                          * -> will be flushed
3172                          */
3173                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3174                         flush_cnt = 1;
3175                 }
3176         }
3177         return flush_cnt;
3178 }
3179
3180 int qeth_do_send_packet_fast(struct qeth_card *card,
3181                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3182                 struct qeth_hdr *hdr, int elements_needed,
3183                 int offset, int hd_len)
3184 {
3185         struct qeth_qdio_out_buffer *buffer;
3186         struct sk_buff *skb1;
3187         struct qeth_skb_data *retry_ctrl;
3188         int index;
3189         int rc;
3190
3191         /* spin until we get the queue ... */
3192         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3193                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3194         /* ... now we've got the queue */
3195         index = queue->next_buf_to_fill;
3196         buffer = &queue->bufs[queue->next_buf_to_fill];
3197         /*
3198          * check if buffer is empty to make sure that we do not 'overtake'
3199          * ourselves and try to fill a buffer that is already primed
3200          */
3201         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3202                 goto out;
3203         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3204                                           QDIO_MAX_BUFFERS_PER_Q;
3205         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3206         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3207         qeth_flush_buffers(queue, index, 1);
3208         if (queue->sync_iqdio_error == 2) {
3209                 skb1 = skb_dequeue(&buffer->skb_list);
3210                 while (skb1) {
3211                         atomic_dec(&skb1->users);
3212                         skb1 = skb_dequeue(&buffer->skb_list);
3213                 }
3214                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3215                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3216                         retry_ctrl->magic = QETH_SKB_MAGIC;
3217                         retry_ctrl->count = 0;
3218                 }
3219                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3220                         retry_ctrl->count++;
3221                         rc = dev_queue_xmit(skb);
3222                 } else {
3223                         dev_kfree_skb_any(skb);
3224                         QETH_CARD_TEXT(card, 2, "qrdrop");
3225                 }
3226         }
3227         return 0;
3228 out:
3229         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3230         return -EBUSY;
3231 }
3232 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3233
3234 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3235                 struct sk_buff *skb, struct qeth_hdr *hdr,
3236                 int elements_needed)
3237 {
3238         struct qeth_qdio_out_buffer *buffer;
3239         int start_index;
3240         int flush_count = 0;
3241         int do_pack = 0;
3242         int tmp;
3243         int rc = 0;
3244
3245         /* spin until we get the queue ... */
3246         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3247                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3248         start_index = queue->next_buf_to_fill;
3249         buffer = &queue->bufs[queue->next_buf_to_fill];
3250         /*
3251          * check if buffer is empty to make sure that we do not 'overtake'
3252          * ourselves and try to fill a buffer that is already primed
3253          */
3254         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3255                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3256                 return -EBUSY;
3257         }
3258         /* check if we need to switch packing state of this queue */
3259         qeth_switch_to_packing_if_needed(queue);
3260         if (queue->do_pack) {
3261                 do_pack = 1;
3262                 /* does packet fit in current buffer? */
3263                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3264                     buffer->next_element_to_fill) < elements_needed) {
3265                         /* ... no -> set state PRIMED */
3266                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3267                         flush_count++;
3268                         queue->next_buf_to_fill =
3269                                 (queue->next_buf_to_fill + 1) %
3270                                 QDIO_MAX_BUFFERS_PER_Q;
3271                         buffer = &queue->bufs[queue->next_buf_to_fill];
3272                         /* we did a step forward, so check buffer state
3273                          * again */
3274                         if (atomic_read(&buffer->state) !=
3275                             QETH_QDIO_BUF_EMPTY) {
3276                                 qeth_flush_buffers(queue, start_index,
3277                                                            flush_count);
3278                                 atomic_set(&queue->state,
3279                                                 QETH_OUT_Q_UNLOCKED);
3280                                 return -EBUSY;
3281                         }
3282                 }
3283         }
3284         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3285         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3286                                   QDIO_MAX_BUFFERS_PER_Q;
3287         flush_count += tmp;
3288         if (flush_count)
3289                 qeth_flush_buffers(queue, start_index, flush_count);
3290         else if (!atomic_read(&queue->set_pci_flags_count))
3291                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3292         /*
3293          * queue->state will go from LOCKED -> UNLOCKED or from
3294          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3295          * (switch packing state or flush buffer to get another pci flag out).
3296          * In that case we will enter this loop
3297          */
3298         while (atomic_dec_return(&queue->state)) {
3299                 flush_count = 0;
3300                 start_index = queue->next_buf_to_fill;
3301                 /* check if we can go back to non-packing state */
3302                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3303                 /*
3304                  * check if we need to flush a packing buffer to get a pci
3305                  * flag out on the queue
3306                  */
3307                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3308                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3309                 if (flush_count)
3310                         qeth_flush_buffers(queue, start_index, flush_count);
3311         }
3312         /* at this point the queue is UNLOCKED again */
3313         if (queue->card->options.performance_stats && do_pack)
3314                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3315
3316         return rc;
3317 }
3318 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3319
3320 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3321                 struct qeth_reply *reply, unsigned long data)
3322 {
3323         struct qeth_ipa_cmd *cmd;
3324         struct qeth_ipacmd_setadpparms *setparms;
3325
3326         QETH_CARD_TEXT(card, 4, "prmadpcb");
3327
3328         cmd = (struct qeth_ipa_cmd *) data;
3329         setparms = &(cmd->data.setadapterparms);
3330
3331         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3332         if (cmd->hdr.return_code) {
3333                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3334                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3335         }
3336         card->info.promisc_mode = setparms->data.mode;
3337         return 0;
3338 }
3339
3340 void qeth_setadp_promisc_mode(struct qeth_card *card)
3341 {
3342         enum qeth_ipa_promisc_modes mode;
3343         struct net_device *dev = card->dev;
3344         struct qeth_cmd_buffer *iob;
3345         struct qeth_ipa_cmd *cmd;
3346
3347         QETH_CARD_TEXT(card, 4, "setprom");
3348
3349         if (((dev->flags & IFF_PROMISC) &&
3350              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3351             (!(dev->flags & IFF_PROMISC) &&
3352              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3353                 return;
3354         mode = SET_PROMISC_MODE_OFF;
3355         if (dev->flags & IFF_PROMISC)
3356                 mode = SET_PROMISC_MODE_ON;
3357         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3358
3359         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3360                         sizeof(struct qeth_ipacmd_setadpparms));
3361         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3362         cmd->data.setadapterparms.data.mode = mode;
3363         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3364 }
3365 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3366
3367 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3368 {
3369         struct qeth_card *card;
3370         char dbf_text[15];
3371
3372         card = dev->ml_priv;
3373
3374         QETH_CARD_TEXT(card, 4, "chgmtu");
3375         sprintf(dbf_text, "%8x", new_mtu);
3376         QETH_CARD_TEXT(card, 4, dbf_text);
3377
3378         if (new_mtu < 64)
3379                 return -EINVAL;
3380         if (new_mtu > 65535)
3381                 return -EINVAL;
3382         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3383             (!qeth_mtu_is_valid(card, new_mtu)))
3384                 return -EINVAL;
3385         dev->mtu = new_mtu;
3386         return 0;
3387 }
3388 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3389
3390 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3391 {
3392         struct qeth_card *card;
3393
3394         card = dev->ml_priv;
3395
3396         QETH_CARD_TEXT(card, 5, "getstat");
3397
3398         return &card->stats;
3399 }
3400 EXPORT_SYMBOL_GPL(qeth_get_stats);
3401
3402 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3403                 struct qeth_reply *reply, unsigned long data)
3404 {
3405         struct qeth_ipa_cmd *cmd;
3406
3407         QETH_CARD_TEXT(card, 4, "chgmaccb");
3408
3409         cmd = (struct qeth_ipa_cmd *) data;
3410         if (!card->options.layer2 ||
3411             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3412                 memcpy(card->dev->dev_addr,
3413                        &cmd->data.setadapterparms.data.change_addr.addr,
3414                        OSA_ADDR_LEN);
3415                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3416         }
3417         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3418         return 0;
3419 }
3420
3421 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3422 {
3423         int rc;
3424         struct qeth_cmd_buffer *iob;
3425         struct qeth_ipa_cmd *cmd;
3426
3427         QETH_CARD_TEXT(card, 4, "chgmac");
3428
3429         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3430                                    sizeof(struct qeth_ipacmd_setadpparms));
3431         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3432         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3433         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3434         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3435                card->dev->dev_addr, OSA_ADDR_LEN);
3436         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3437                                NULL);
3438         return rc;
3439 }
3440 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3441
3442 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3443                 struct qeth_reply *reply, unsigned long data)
3444 {
3445         struct qeth_ipa_cmd *cmd;
3446         struct qeth_set_access_ctrl *access_ctrl_req;
3447
3448         QETH_CARD_TEXT(card, 4, "setaccb");
3449
3450         cmd = (struct qeth_ipa_cmd *) data;
3451         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3452         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3453         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3454         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3455                 cmd->data.setadapterparms.hdr.return_code);
3456         switch (cmd->data.setadapterparms.hdr.return_code) {
3457         case SET_ACCESS_CTRL_RC_SUCCESS:
3458         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3459         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3460         {
3461                 card->options.isolation = access_ctrl_req->subcmd_code;
3462                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3463                         dev_info(&card->gdev->dev,
3464                             "QDIO data connection isolation is deactivated\n");
3465                 } else {
3466                         dev_info(&card->gdev->dev,
3467                             "QDIO data connection isolation is activated\n");
3468                 }
3469                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3470                         card->gdev->dev.kobj.name,
3471                         access_ctrl_req->subcmd_code,
3472                         cmd->data.setadapterparms.hdr.return_code);
3473                 break;
3474         }
3475         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3476         {
3477                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%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, "Adapter does not "
3482                         "support QDIO data connection isolation\n");
3483
3484                 /* ensure isolation mode is "none" */
3485                 card->options.isolation = ISOLATION_MODE_NONE;
3486                 break;
3487         }
3488         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3489         {
3490                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3491                         card->gdev->dev.kobj.name,
3492                         access_ctrl_req->subcmd_code,
3493                         cmd->data.setadapterparms.hdr.return_code);
3494                 dev_err(&card->gdev->dev,
3495                         "Adapter is dedicated. "
3496                         "QDIO data connection isolation not supported\n");
3497
3498                 /* ensure isolation mode is "none" */
3499                 card->options.isolation = ISOLATION_MODE_NONE;
3500                 break;
3501         }
3502         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3503         {
3504                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3505                         card->gdev->dev.kobj.name,
3506                         access_ctrl_req->subcmd_code,
3507                         cmd->data.setadapterparms.hdr.return_code);
3508                 dev_err(&card->gdev->dev,
3509                         "TSO does not permit QDIO data connection isolation\n");
3510
3511                 /* ensure isolation mode is "none" */
3512                 card->options.isolation = ISOLATION_MODE_NONE;
3513                 break;
3514         }
3515         default:
3516         {
3517                 /* this should never happen */
3518                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3519                         "==UNKNOWN\n",
3520                         card->gdev->dev.kobj.name,
3521                         access_ctrl_req->subcmd_code,
3522                         cmd->data.setadapterparms.hdr.return_code);
3523
3524                 /* ensure isolation mode is "none" */
3525                 card->options.isolation = ISOLATION_MODE_NONE;
3526                 break;
3527         }
3528         }
3529         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3530         return 0;
3531 }
3532
3533 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3534                 enum qeth_ipa_isolation_modes isolation)
3535 {
3536         int rc;
3537         struct qeth_cmd_buffer *iob;
3538         struct qeth_ipa_cmd *cmd;
3539         struct qeth_set_access_ctrl *access_ctrl_req;
3540
3541         QETH_CARD_TEXT(card, 4, "setacctl");
3542
3543         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3544         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3545
3546         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3547                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3548                                    sizeof(struct qeth_set_access_ctrl));
3549         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3550         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3551         access_ctrl_req->subcmd_code = isolation;
3552
3553         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3554                                NULL);
3555         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3556         return rc;
3557 }
3558
3559 int qeth_set_access_ctrl_online(struct qeth_card *card)
3560 {
3561         int rc = 0;
3562
3563         QETH_CARD_TEXT(card, 4, "setactlo");
3564
3565         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3566              card->info.type == QETH_CARD_TYPE_OSX) &&
3567              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3568                 rc = qeth_setadpparms_set_access_ctrl(card,
3569                         card->options.isolation);
3570                 if (rc) {
3571                         QETH_DBF_MESSAGE(3,
3572                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3573                                 card->gdev->dev.kobj.name,
3574                                 rc);
3575                 }
3576         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3577                 card->options.isolation = ISOLATION_MODE_NONE;
3578
3579                 dev_err(&card->gdev->dev, "Adapter does not "
3580                         "support QDIO data connection isolation\n");
3581                 rc = -EOPNOTSUPP;
3582         }
3583         return rc;
3584 }
3585 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3586
3587 void qeth_tx_timeout(struct net_device *dev)
3588 {
3589         struct qeth_card *card;
3590
3591         card = dev->ml_priv;
3592         QETH_CARD_TEXT(card, 4, "txtimeo");
3593         card->stats.tx_errors++;
3594         qeth_schedule_recovery(card);
3595 }
3596 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3597
3598 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3599 {
3600         struct qeth_card *card = dev->ml_priv;
3601         int rc = 0;
3602
3603         switch (regnum) {
3604         case MII_BMCR: /* Basic mode control register */
3605                 rc = BMCR_FULLDPLX;
3606                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3607                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3608                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3609                         rc |= BMCR_SPEED100;
3610                 break;
3611         case MII_BMSR: /* Basic mode status register */
3612                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3613                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3614                      BMSR_100BASE4;
3615                 break;
3616         case MII_PHYSID1: /* PHYS ID 1 */
3617                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3618                      dev->dev_addr[2];
3619                 rc = (rc >> 5) & 0xFFFF;
3620                 break;
3621         case MII_PHYSID2: /* PHYS ID 2 */
3622                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3623                 break;
3624         case MII_ADVERTISE: /* Advertisement control reg */
3625                 rc = ADVERTISE_ALL;
3626                 break;
3627         case MII_LPA: /* Link partner ability reg */
3628                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3629                      LPA_100BASE4 | LPA_LPACK;
3630                 break;
3631         case MII_EXPANSION: /* Expansion register */
3632                 break;
3633         case MII_DCOUNTER: /* disconnect counter */
3634                 break;
3635         case MII_FCSCOUNTER: /* false carrier counter */
3636                 break;
3637         case MII_NWAYTEST: /* N-way auto-neg test register */
3638                 break;
3639         case MII_RERRCOUNTER: /* rx error counter */
3640                 rc = card->stats.rx_errors;
3641                 break;
3642         case MII_SREVISION: /* silicon revision */
3643                 break;
3644         case MII_RESV1: /* reserved 1 */
3645                 break;
3646         case MII_LBRERROR: /* loopback, rx, bypass error */
3647                 break;
3648         case MII_PHYADDR: /* physical address */
3649                 break;
3650         case MII_RESV2: /* reserved 2 */
3651                 break;
3652         case MII_TPISTATUS: /* TPI status for 10mbps */
3653                 break;
3654         case MII_NCONFIG: /* network interface config */
3655                 break;
3656         default:
3657                 break;
3658         }
3659         return rc;
3660 }
3661 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3662
3663 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3664                 struct qeth_cmd_buffer *iob, int len,
3665                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3666                         unsigned long),
3667                 void *reply_param)
3668 {
3669         u16 s1, s2;
3670
3671         QETH_CARD_TEXT(card, 4, "sendsnmp");
3672
3673         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3674         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3675                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3676         /* adjust PDU length fields in IPA_PDU_HEADER */
3677         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3678         s2 = (u32) len;
3679         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3680         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3681         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3682         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3683         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3684                                       reply_cb, reply_param);
3685 }
3686
3687 static int qeth_snmp_command_cb(struct qeth_card *card,
3688                 struct qeth_reply *reply, unsigned long sdata)
3689 {
3690         struct qeth_ipa_cmd *cmd;
3691         struct qeth_arp_query_info *qinfo;
3692         struct qeth_snmp_cmd *snmp;
3693         unsigned char *data;
3694         __u16 data_len;
3695
3696         QETH_CARD_TEXT(card, 3, "snpcmdcb");
3697
3698         cmd = (struct qeth_ipa_cmd *) sdata;
3699         data = (unsigned char *)((char *)cmd - reply->offset);
3700         qinfo = (struct qeth_arp_query_info *) reply->param;
3701         snmp = &cmd->data.setadapterparms.data.snmp;
3702
3703         if (cmd->hdr.return_code) {
3704                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3705                 return 0;
3706         }
3707         if (cmd->data.setadapterparms.hdr.return_code) {
3708                 cmd->hdr.return_code =
3709                         cmd->data.setadapterparms.hdr.return_code;
3710                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3711                 return 0;
3712         }
3713         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3714         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3715                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3716         else
3717                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3718
3719         /* check if there is enough room in userspace */
3720         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3721                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3722                 cmd->hdr.return_code = -ENOMEM;
3723                 return 0;
3724         }
3725         QETH_CARD_TEXT_(card, 4, "snore%i",
3726                        cmd->data.setadapterparms.hdr.used_total);
3727         QETH_CARD_TEXT_(card, 4, "sseqn%i",
3728                 cmd->data.setadapterparms.hdr.seq_no);
3729         /*copy entries to user buffer*/
3730         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3731                 memcpy(qinfo->udata + qinfo->udata_offset,
3732                        (char *)snmp,
3733                        data_len + offsetof(struct qeth_snmp_cmd, data));
3734                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3735         } else {
3736                 memcpy(qinfo->udata + qinfo->udata_offset,
3737                        (char *)&snmp->request, data_len);
3738         }
3739         qinfo->udata_offset += data_len;
3740         /* check if all replies received ... */
3741                 QETH_CARD_TEXT_(card, 4, "srtot%i",
3742                                cmd->data.setadapterparms.hdr.used_total);
3743                 QETH_CARD_TEXT_(card, 4, "srseq%i",
3744                                cmd->data.setadapterparms.hdr.seq_no);
3745         if (cmd->data.setadapterparms.hdr.seq_no <
3746             cmd->data.setadapterparms.hdr.used_total)
3747                 return 1;
3748         return 0;
3749 }
3750
3751 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3752 {
3753         struct qeth_cmd_buffer *iob;
3754         struct qeth_ipa_cmd *cmd;
3755         struct qeth_snmp_ureq *ureq;
3756         int req_len;
3757         struct qeth_arp_query_info qinfo = {0, };
3758         int rc = 0;
3759
3760         QETH_CARD_TEXT(card, 3, "snmpcmd");
3761
3762         if (card->info.guestlan)
3763                 return -EOPNOTSUPP;
3764
3765         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3766             (!card->options.layer2)) {
3767                 return -EOPNOTSUPP;
3768         }
3769         /* skip 4 bytes (data_len struct member) to get req_len */
3770         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3771                 return -EFAULT;
3772         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
3773         if (IS_ERR(ureq)) {
3774                 QETH_CARD_TEXT(card, 2, "snmpnome");
3775                 return PTR_ERR(ureq);
3776         }
3777         qinfo.udata_len = ureq->hdr.data_len;
3778         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3779         if (!qinfo.udata) {
3780                 kfree(ureq);
3781                 return -ENOMEM;
3782         }
3783         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3784
3785         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3786                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3787         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3788         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3789         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3790                                     qeth_snmp_command_cb, (void *)&qinfo);
3791         if (rc)
3792                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3793                            QETH_CARD_IFNAME(card), rc);
3794         else {
3795                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3796                         rc = -EFAULT;
3797         }
3798
3799         kfree(ureq);
3800         kfree(qinfo.udata);
3801         return rc;
3802 }
3803 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3804
3805 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3806 {
3807         switch (card->info.type) {
3808         case QETH_CARD_TYPE_IQD:
3809                 return 2;
3810         default:
3811                 return 0;
3812         }
3813 }
3814
3815 static int qeth_qdio_establish(struct qeth_card *card)
3816 {
3817         struct qdio_initialize init_data;
3818         char *qib_param_field;
3819         struct qdio_buffer **in_sbal_ptrs;
3820         struct qdio_buffer **out_sbal_ptrs;
3821         int i, j, k;
3822         int rc = 0;
3823
3824         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3825
3826         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3827                               GFP_KERNEL);
3828         if (!qib_param_field)
3829                 return -ENOMEM;
3830
3831         qeth_create_qib_param_field(card, qib_param_field);
3832         qeth_create_qib_param_field_blkt(card, qib_param_field);
3833
3834         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3835                                GFP_KERNEL);
3836         if (!in_sbal_ptrs) {
3837                 kfree(qib_param_field);
3838                 return -ENOMEM;
3839         }
3840         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3841                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3842                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3843
3844         out_sbal_ptrs =
3845                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3846                         sizeof(void *), GFP_KERNEL);
3847         if (!out_sbal_ptrs) {
3848                 kfree(in_sbal_ptrs);
3849                 kfree(qib_param_field);
3850                 return -ENOMEM;
3851         }
3852         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3853                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3854                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3855                                 card->qdio.out_qs[i]->bufs[j].buffer);
3856                 }
3857
3858         memset(&init_data, 0, sizeof(struct qdio_initialize));
3859         init_data.cdev                   = CARD_DDEV(card);
3860         init_data.q_format               = qeth_get_qdio_q_format(card);
3861         init_data.qib_param_field_format = 0;
3862         init_data.qib_param_field        = qib_param_field;
3863         init_data.no_input_qs            = 1;
3864         init_data.no_output_qs           = card->qdio.no_out_queues;
3865         init_data.input_handler          = card->discipline.input_handler;
3866         init_data.output_handler         = card->discipline.output_handler;
3867         init_data.queue_start_poll       = card->discipline.start_poll;
3868         init_data.int_parm               = (unsigned long) card;
3869         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3870         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3871
3872         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3873                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3874                 rc = qdio_allocate(&init_data);
3875                 if (rc) {
3876                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3877                         goto out;
3878                 }
3879                 rc = qdio_establish(&init_data);
3880                 if (rc) {
3881                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3882                         qdio_free(CARD_DDEV(card));
3883                 }
3884         }
3885 out:
3886         kfree(out_sbal_ptrs);
3887         kfree(in_sbal_ptrs);
3888         kfree(qib_param_field);
3889         return rc;
3890 }
3891
3892 static void qeth_core_free_card(struct qeth_card *card)
3893 {
3894
3895         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3896         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3897         qeth_clean_channel(&card->read);
3898         qeth_clean_channel(&card->write);
3899         if (card->dev)
3900                 free_netdev(card->dev);
3901         kfree(card->ip_tbd_list);
3902         qeth_free_qdio_buffers(card);
3903         unregister_service_level(&card->qeth_service_level);
3904         kfree(card);
3905 }
3906
3907 static struct ccw_device_id qeth_ids[] = {
3908         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
3909                                         .driver_info = QETH_CARD_TYPE_OSD},
3910         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
3911                                         .driver_info = QETH_CARD_TYPE_IQD},
3912         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
3913                                         .driver_info = QETH_CARD_TYPE_OSN},
3914         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
3915                                         .driver_info = QETH_CARD_TYPE_OSM},
3916         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
3917                                         .driver_info = QETH_CARD_TYPE_OSX},
3918         {},
3919 };
3920 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3921
3922 static struct ccw_driver qeth_ccw_driver = {
3923         .name = "qeth",
3924         .ids = qeth_ids,
3925         .probe = ccwgroup_probe_ccwdev,
3926         .remove = ccwgroup_remove_ccwdev,
3927 };
3928
3929 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3930                                 unsigned long driver_id)
3931 {
3932         return ccwgroup_create_from_string(root_dev, driver_id,
3933                                            &qeth_ccw_driver, 3, buf);
3934 }
3935
3936 int qeth_core_hardsetup_card(struct qeth_card *card)
3937 {
3938         int retries = 0;
3939         int rc;
3940
3941         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3942         atomic_set(&card->force_alloc_skb, 0);
3943 retry:
3944         if (retries)
3945                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3946                         dev_name(&card->gdev->dev));
3947         ccw_device_set_offline(CARD_DDEV(card));
3948         ccw_device_set_offline(CARD_WDEV(card));
3949         ccw_device_set_offline(CARD_RDEV(card));
3950         rc = ccw_device_set_online(CARD_RDEV(card));
3951         if (rc)
3952                 goto retriable;
3953         rc = ccw_device_set_online(CARD_WDEV(card));
3954         if (rc)
3955                 goto retriable;
3956         rc = ccw_device_set_online(CARD_DDEV(card));
3957         if (rc)
3958                 goto retriable;
3959         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3960 retriable:
3961         if (rc == -ERESTARTSYS) {
3962                 QETH_DBF_TEXT(SETUP, 2, "break1");
3963                 return rc;
3964         } else if (rc) {
3965                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3966                 if (++retries > 3)
3967                         goto out;
3968                 else
3969                         goto retry;
3970         }
3971         qeth_init_tokens(card);
3972         qeth_init_func_level(card);
3973         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3974         if (rc == -ERESTARTSYS) {
3975                 QETH_DBF_TEXT(SETUP, 2, "break2");
3976                 return rc;
3977         } else if (rc) {
3978                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3979                 if (--retries < 0)
3980                         goto out;
3981                 else
3982                         goto retry;
3983         }
3984         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3985         if (rc == -ERESTARTSYS) {
3986                 QETH_DBF_TEXT(SETUP, 2, "break3");
3987                 return rc;
3988         } else if (rc) {
3989                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3990                 if (--retries < 0)
3991                         goto out;
3992                 else
3993                         goto retry;
3994         }
3995         card->read_or_write_problem = 0;
3996         rc = qeth_mpc_initialize(card);
3997         if (rc) {
3998                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3999                 goto out;
4000         }
4001         return 0;
4002 out:
4003         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4004                 "an error on the device\n");
4005         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4006                 dev_name(&card->gdev->dev), rc);
4007         return rc;
4008 }
4009 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4010
4011 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4012                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4013 {
4014         struct page *page = virt_to_page(element->addr);
4015         if (*pskb == NULL) {
4016                 /* the upper protocol layers assume that there is data in the
4017                  * skb itself. Copy a small amount (64 bytes) to make them
4018                  * happy. */
4019                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4020                 if (!(*pskb))
4021                         return -ENOMEM;
4022                 skb_reserve(*pskb, ETH_HLEN);
4023                 if (data_len <= 64) {
4024                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4025                                 data_len);
4026                 } else {
4027                         get_page(page);
4028                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4029                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4030                                 data_len - 64);
4031                         (*pskb)->data_len += data_len - 64;
4032                         (*pskb)->len      += data_len - 64;
4033                         (*pskb)->truesize += data_len - 64;
4034                         (*pfrag)++;
4035                 }
4036         } else {
4037                 get_page(page);
4038                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4039                 (*pskb)->data_len += data_len;
4040                 (*pskb)->len      += data_len;
4041                 (*pskb)->truesize += data_len;
4042                 (*pfrag)++;
4043         }
4044         return 0;
4045 }
4046
4047 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4048                 struct qdio_buffer *buffer,
4049                 struct qdio_buffer_element **__element, int *__offset,
4050                 struct qeth_hdr **hdr)
4051 {
4052         struct qdio_buffer_element *element = *__element;
4053         int offset = *__offset;
4054         struct sk_buff *skb = NULL;
4055         int skb_len = 0;
4056         void *data_ptr;
4057         int data_len;
4058         int headroom = 0;
4059         int use_rx_sg = 0;
4060         int frag = 0;
4061
4062         /* qeth_hdr must not cross element boundaries */
4063         if (element->length < offset + sizeof(struct qeth_hdr)) {
4064                 if (qeth_is_last_sbale(element))
4065                         return NULL;
4066                 element++;
4067                 offset = 0;
4068                 if (element->length < sizeof(struct qeth_hdr))
4069                         return NULL;
4070         }
4071         *hdr = element->addr + offset;
4072
4073         offset += sizeof(struct qeth_hdr);
4074         switch ((*hdr)->hdr.l2.id) {
4075         case QETH_HEADER_TYPE_LAYER2:
4076                 skb_len = (*hdr)->hdr.l2.pkt_length;
4077                 break;
4078         case QETH_HEADER_TYPE_LAYER3:
4079                 skb_len = (*hdr)->hdr.l3.length;
4080                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4081                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4082                         headroom = TR_HLEN;
4083                 else
4084                         headroom = ETH_HLEN;
4085                 break;
4086         case QETH_HEADER_TYPE_OSN:
4087                 skb_len = (*hdr)->hdr.osn.pdu_length;
4088                 headroom = sizeof(struct qeth_hdr);
4089                 break;
4090         default:
4091                 break;
4092         }
4093
4094         if (!skb_len)
4095                 return NULL;
4096
4097         if ((skb_len >= card->options.rx_sg_cb) &&
4098             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4099             (!atomic_read(&card->force_alloc_skb))) {
4100                 use_rx_sg = 1;
4101         } else {
4102                 skb = dev_alloc_skb(skb_len + headroom);
4103                 if (!skb)
4104                         goto no_mem;
4105                 if (headroom)
4106                         skb_reserve(skb, headroom);
4107         }
4108
4109         data_ptr = element->addr + offset;
4110         while (skb_len) {
4111                 data_len = min(skb_len, (int)(element->length - offset));
4112                 if (data_len) {
4113                         if (use_rx_sg) {
4114                                 if (qeth_create_skb_frag(element, &skb, offset,
4115                                     &frag, data_len))
4116                                         goto no_mem;
4117                         } else {
4118                                 memcpy(skb_put(skb, data_len), data_ptr,
4119                                         data_len);
4120                         }
4121                 }
4122                 skb_len -= data_len;
4123                 if (skb_len) {
4124                         if (qeth_is_last_sbale(element)) {
4125                                 QETH_CARD_TEXT(card, 4, "unexeob");
4126                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4127                                 dev_kfree_skb_any(skb);
4128                                 card->stats.rx_errors++;
4129                                 return NULL;
4130                         }
4131                         element++;
4132                         offset = 0;
4133                         data_ptr = element->addr;
4134                 } else {
4135                         offset += data_len;
4136                 }
4137         }
4138         *__element = element;
4139         *__offset = offset;
4140         if (use_rx_sg && card->options.performance_stats) {
4141                 card->perf_stats.sg_skbs_rx++;
4142                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4143         }
4144         return skb;
4145 no_mem:
4146         if (net_ratelimit()) {
4147                 QETH_CARD_TEXT(card, 2, "noskbmem");
4148         }
4149         card->stats.rx_dropped++;
4150         return NULL;
4151 }
4152 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4153
4154 static void qeth_unregister_dbf_views(void)
4155 {
4156         int x;
4157         for (x = 0; x < QETH_DBF_INFOS; x++) {
4158                 debug_unregister(qeth_dbf[x].id);
4159                 qeth_dbf[x].id = NULL;
4160         }
4161 }
4162
4163 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4164 {
4165         char dbf_txt_buf[32];
4166         va_list args;
4167
4168         if (level > id->level)
4169                 return;
4170         va_start(args, fmt);
4171         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4172         va_end(args);
4173         debug_text_event(id, level, dbf_txt_buf);
4174 }
4175 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4176
4177 static int qeth_register_dbf_views(void)
4178 {
4179         int ret;
4180         int x;
4181
4182         for (x = 0; x < QETH_DBF_INFOS; x++) {
4183                 /* register the areas */
4184                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4185                                                 qeth_dbf[x].pages,
4186                                                 qeth_dbf[x].areas,
4187                                                 qeth_dbf[x].len);
4188                 if (qeth_dbf[x].id == NULL) {
4189                         qeth_unregister_dbf_views();
4190                         return -ENOMEM;
4191                 }
4192
4193                 /* register a view */
4194                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4195                 if (ret) {
4196                         qeth_unregister_dbf_views();
4197                         return ret;
4198                 }
4199
4200                 /* set a passing level */
4201                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4202         }
4203
4204         return 0;
4205 }
4206
4207 int qeth_core_load_discipline(struct qeth_card *card,
4208                 enum qeth_discipline_id discipline)
4209 {
4210         int rc = 0;
4211         switch (discipline) {
4212         case QETH_DISCIPLINE_LAYER3:
4213                 card->discipline.ccwgdriver = try_then_request_module(
4214                         symbol_get(qeth_l3_ccwgroup_driver),
4215                         "qeth_l3");
4216                 break;
4217         case QETH_DISCIPLINE_LAYER2:
4218                 card->discipline.ccwgdriver = try_then_request_module(
4219                         symbol_get(qeth_l2_ccwgroup_driver),
4220                         "qeth_l2");
4221                 break;
4222         }
4223         if (!card->discipline.ccwgdriver) {
4224                 dev_err(&card->gdev->dev, "There is no kernel module to "
4225                         "support discipline %d\n", discipline);
4226                 rc = -EINVAL;
4227         }
4228         return rc;
4229 }
4230
4231 void qeth_core_free_discipline(struct qeth_card *card)
4232 {
4233         if (card->options.layer2)
4234                 symbol_put(qeth_l2_ccwgroup_driver);
4235         else
4236                 symbol_put(qeth_l3_ccwgroup_driver);
4237         card->discipline.ccwgdriver = NULL;
4238 }
4239
4240 static void qeth_determine_capabilities(struct qeth_card *card)
4241 {
4242         int rc;
4243         int length;
4244         char *prcd;
4245
4246         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4247         rc = ccw_device_set_online(CARD_DDEV(card));
4248         if (rc) {
4249                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4250                 goto out;
4251         }
4252
4253
4254         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4255         if (rc) {
4256                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4257                         dev_name(&card->gdev->dev), rc);
4258                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4259                 goto out_offline;
4260         }
4261         qeth_configure_unitaddr(card, prcd);
4262         qeth_configure_blkt_default(card, prcd);
4263         kfree(prcd);
4264
4265         rc = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
4266         if (rc)
4267                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4268
4269 out_offline:
4270         ccw_device_set_offline(CARD_DDEV(card));
4271 out:
4272         return;
4273 }
4274
4275 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4276 {
4277         struct qeth_card *card;
4278         struct device *dev;
4279         int rc;
4280         unsigned long flags;
4281         char dbf_name[20];
4282
4283         QETH_DBF_TEXT(SETUP, 2, "probedev");
4284
4285         dev = &gdev->dev;
4286         if (!get_device(dev))
4287                 return -ENODEV;
4288
4289         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4290
4291         card = qeth_alloc_card();
4292         if (!card) {
4293                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4294                 rc = -ENOMEM;
4295                 goto err_dev;
4296         }
4297
4298         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4299                 dev_name(&gdev->dev));
4300         card->debug = debug_register(dbf_name, 2, 1, 8);
4301         if (!card->debug) {
4302                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4303                 rc = -ENOMEM;
4304                 goto err_card;
4305         }
4306         debug_register_view(card->debug, &debug_hex_ascii_view);
4307
4308         card->read.ccwdev  = gdev->cdev[0];
4309         card->write.ccwdev = gdev->cdev[1];
4310         card->data.ccwdev  = gdev->cdev[2];
4311         dev_set_drvdata(&gdev->dev, card);
4312         card->gdev = gdev;
4313         gdev->cdev[0]->handler = qeth_irq;
4314         gdev->cdev[1]->handler = qeth_irq;
4315         gdev->cdev[2]->handler = qeth_irq;
4316
4317         rc = qeth_determine_card_type(card);
4318         if (rc) {
4319                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4320                 goto err_dbf;
4321         }
4322         rc = qeth_setup_card(card);
4323         if (rc) {
4324                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4325                 goto err_dbf;
4326         }
4327
4328         if (card->info.type == QETH_CARD_TYPE_OSN)
4329                 rc = qeth_core_create_osn_attributes(dev);
4330         else
4331                 rc = qeth_core_create_device_attributes(dev);
4332         if (rc)
4333                 goto err_dbf;
4334         switch (card->info.type) {
4335         case QETH_CARD_TYPE_OSN:
4336         case QETH_CARD_TYPE_OSM:
4337                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4338                 if (rc)
4339                         goto err_attr;
4340                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4341                 if (rc)
4342                         goto err_disc;
4343         case QETH_CARD_TYPE_OSD:
4344         case QETH_CARD_TYPE_OSX:
4345         default:
4346                 break;
4347         }
4348
4349         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4350         list_add_tail(&card->list, &qeth_core_card_list.list);
4351         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4352
4353         qeth_determine_capabilities(card);
4354         return 0;
4355
4356 err_disc:
4357         qeth_core_free_discipline(card);
4358 err_attr:
4359         if (card->info.type == QETH_CARD_TYPE_OSN)
4360                 qeth_core_remove_osn_attributes(dev);
4361         else
4362                 qeth_core_remove_device_attributes(dev);
4363 err_dbf:
4364         debug_unregister(card->debug);
4365 err_card:
4366         qeth_core_free_card(card);
4367 err_dev:
4368         put_device(dev);
4369         return rc;
4370 }
4371
4372 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4373 {
4374         unsigned long flags;
4375         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4376
4377         QETH_DBF_TEXT(SETUP, 2, "removedv");
4378
4379         if (card->info.type == QETH_CARD_TYPE_OSN) {
4380                 qeth_core_remove_osn_attributes(&gdev->dev);
4381         } else {
4382                 qeth_core_remove_device_attributes(&gdev->dev);
4383         }
4384
4385         if (card->discipline.ccwgdriver) {
4386                 card->discipline.ccwgdriver->remove(gdev);
4387                 qeth_core_free_discipline(card);
4388         }
4389
4390         debug_unregister(card->debug);
4391         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4392         list_del(&card->list);
4393         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4394         qeth_core_free_card(card);
4395         dev_set_drvdata(&gdev->dev, NULL);
4396         put_device(&gdev->dev);
4397         return;
4398 }
4399
4400 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4401 {
4402         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4403         int rc = 0;
4404         int def_discipline;
4405
4406         if (!card->discipline.ccwgdriver) {
4407                 if (card->info.type == QETH_CARD_TYPE_IQD)
4408                         def_discipline = QETH_DISCIPLINE_LAYER3;
4409                 else
4410                         def_discipline = QETH_DISCIPLINE_LAYER2;
4411                 rc = qeth_core_load_discipline(card, def_discipline);
4412                 if (rc)
4413                         goto err;
4414                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4415                 if (rc)
4416                         goto err;
4417         }
4418         rc = card->discipline.ccwgdriver->set_online(gdev);
4419 err:
4420         return rc;
4421 }
4422
4423 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4424 {
4425         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4426         return card->discipline.ccwgdriver->set_offline(gdev);
4427 }
4428
4429 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4430 {
4431         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4432         if (card->discipline.ccwgdriver &&
4433             card->discipline.ccwgdriver->shutdown)
4434                 card->discipline.ccwgdriver->shutdown(gdev);
4435 }
4436
4437 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4438 {
4439         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4440         if (card->discipline.ccwgdriver &&
4441             card->discipline.ccwgdriver->prepare)
4442                 return card->discipline.ccwgdriver->prepare(gdev);
4443         return 0;
4444 }
4445
4446 static void qeth_core_complete(struct ccwgroup_device *gdev)
4447 {
4448         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4449         if (card->discipline.ccwgdriver &&
4450             card->discipline.ccwgdriver->complete)
4451                 card->discipline.ccwgdriver->complete(gdev);
4452 }
4453
4454 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4455 {
4456         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4457         if (card->discipline.ccwgdriver &&
4458             card->discipline.ccwgdriver->freeze)
4459                 return card->discipline.ccwgdriver->freeze(gdev);
4460         return 0;
4461 }
4462
4463 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4464 {
4465         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4466         if (card->discipline.ccwgdriver &&
4467             card->discipline.ccwgdriver->thaw)
4468                 return card->discipline.ccwgdriver->thaw(gdev);
4469         return 0;
4470 }
4471
4472 static int qeth_core_restore(struct ccwgroup_device *gdev)
4473 {
4474         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4475         if (card->discipline.ccwgdriver &&
4476             card->discipline.ccwgdriver->restore)
4477                 return card->discipline.ccwgdriver->restore(gdev);
4478         return 0;
4479 }
4480
4481 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4482         .owner = THIS_MODULE,
4483         .name = "qeth",
4484         .driver_id = 0xD8C5E3C8,
4485         .probe = qeth_core_probe_device,
4486         .remove = qeth_core_remove_device,
4487         .set_online = qeth_core_set_online,
4488         .set_offline = qeth_core_set_offline,
4489         .shutdown = qeth_core_shutdown,
4490         .prepare = qeth_core_prepare,
4491         .complete = qeth_core_complete,
4492         .freeze = qeth_core_freeze,
4493         .thaw = qeth_core_thaw,
4494         .restore = qeth_core_restore,
4495 };
4496
4497 static ssize_t
4498 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4499                            size_t count)
4500 {
4501         int err;
4502         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4503                                         qeth_core_ccwgroup_driver.driver_id);
4504         if (err)
4505                 return err;
4506         else
4507                 return count;
4508 }
4509
4510 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4511
4512 static struct {
4513         const char str[ETH_GSTRING_LEN];
4514 } qeth_ethtool_stats_keys[] = {
4515 /*  0 */{"rx skbs"},
4516         {"rx buffers"},
4517         {"tx skbs"},
4518         {"tx buffers"},
4519         {"tx skbs no packing"},
4520         {"tx buffers no packing"},
4521         {"tx skbs packing"},
4522         {"tx buffers packing"},
4523         {"tx sg skbs"},
4524         {"tx sg frags"},
4525 /* 10 */{"rx sg skbs"},
4526         {"rx sg frags"},
4527         {"rx sg page allocs"},
4528         {"tx large kbytes"},
4529         {"tx large count"},
4530         {"tx pk state ch n->p"},
4531         {"tx pk state ch p->n"},
4532         {"tx pk watermark low"},
4533         {"tx pk watermark high"},
4534         {"queue 0 buffer usage"},
4535 /* 20 */{"queue 1 buffer usage"},
4536         {"queue 2 buffer usage"},
4537         {"queue 3 buffer usage"},
4538         {"rx poll time"},
4539         {"rx poll count"},
4540         {"rx do_QDIO time"},
4541         {"rx do_QDIO count"},
4542         {"tx handler time"},
4543         {"tx handler count"},
4544         {"tx time"},
4545 /* 30 */{"tx count"},
4546         {"tx do_QDIO time"},
4547         {"tx do_QDIO count"},
4548         {"tx csum"},
4549         {"tx lin"},
4550 };
4551
4552 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4553 {
4554         switch (stringset) {
4555         case ETH_SS_STATS:
4556                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4557         default:
4558                 return -EINVAL;
4559         }
4560 }
4561 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4562
4563 void qeth_core_get_ethtool_stats(struct net_device *dev,
4564                 struct ethtool_stats *stats, u64 *data)
4565 {
4566         struct qeth_card *card = dev->ml_priv;
4567         data[0] = card->stats.rx_packets -
4568                                 card->perf_stats.initial_rx_packets;
4569         data[1] = card->perf_stats.bufs_rec;
4570         data[2] = card->stats.tx_packets -
4571                                 card->perf_stats.initial_tx_packets;
4572         data[3] = card->perf_stats.bufs_sent;
4573         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4574                         - card->perf_stats.skbs_sent_pack;
4575         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4576         data[6] = card->perf_stats.skbs_sent_pack;
4577         data[7] = card->perf_stats.bufs_sent_pack;
4578         data[8] = card->perf_stats.sg_skbs_sent;
4579         data[9] = card->perf_stats.sg_frags_sent;
4580         data[10] = card->perf_stats.sg_skbs_rx;
4581         data[11] = card->perf_stats.sg_frags_rx;
4582         data[12] = card->perf_stats.sg_alloc_page_rx;
4583         data[13] = (card->perf_stats.large_send_bytes >> 10);
4584         data[14] = card->perf_stats.large_send_cnt;
4585         data[15] = card->perf_stats.sc_dp_p;
4586         data[16] = card->perf_stats.sc_p_dp;
4587         data[17] = QETH_LOW_WATERMARK_PACK;
4588         data[18] = QETH_HIGH_WATERMARK_PACK;
4589         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4590         data[20] = (card->qdio.no_out_queues > 1) ?
4591                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4592         data[21] = (card->qdio.no_out_queues > 2) ?
4593                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4594         data[22] = (card->qdio.no_out_queues > 3) ?
4595                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4596         data[23] = card->perf_stats.inbound_time;
4597         data[24] = card->perf_stats.inbound_cnt;
4598         data[25] = card->perf_stats.inbound_do_qdio_time;
4599         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4600         data[27] = card->perf_stats.outbound_handler_time;
4601         data[28] = card->perf_stats.outbound_handler_cnt;
4602         data[29] = card->perf_stats.outbound_time;
4603         data[30] = card->perf_stats.outbound_cnt;
4604         data[31] = card->perf_stats.outbound_do_qdio_time;
4605         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4606         data[33] = card->perf_stats.tx_csum;
4607         data[34] = card->perf_stats.tx_lin;
4608 }
4609 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4610
4611 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4612 {
4613         switch (stringset) {
4614         case ETH_SS_STATS:
4615                 memcpy(data, &qeth_ethtool_stats_keys,
4616                         sizeof(qeth_ethtool_stats_keys));
4617                 break;
4618         default:
4619                 WARN_ON(1);
4620                 break;
4621         }
4622 }
4623 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4624
4625 void qeth_core_get_drvinfo(struct net_device *dev,
4626                 struct ethtool_drvinfo *info)
4627 {
4628         struct qeth_card *card = dev->ml_priv;
4629         if (card->options.layer2)
4630                 strcpy(info->driver, "qeth_l2");
4631         else
4632                 strcpy(info->driver, "qeth_l3");
4633
4634         strcpy(info->version, "1.0");
4635         strcpy(info->fw_version, card->info.mcl_level);
4636         sprintf(info->bus_info, "%s/%s/%s",
4637                         CARD_RDEV_ID(card),
4638                         CARD_WDEV_ID(card),
4639                         CARD_DDEV_ID(card));
4640 }
4641 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4642
4643 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4644                                         struct ethtool_cmd *ecmd)
4645 {
4646         struct qeth_card *card = netdev->ml_priv;
4647         enum qeth_link_types link_type;
4648
4649         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4650                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4651         else
4652                 link_type = card->info.link_type;
4653
4654         ecmd->transceiver = XCVR_INTERNAL;
4655         ecmd->supported = SUPPORTED_Autoneg;
4656         ecmd->advertising = ADVERTISED_Autoneg;
4657         ecmd->duplex = DUPLEX_FULL;
4658         ecmd->autoneg = AUTONEG_ENABLE;
4659
4660         switch (link_type) {
4661         case QETH_LINK_TYPE_FAST_ETH:
4662         case QETH_LINK_TYPE_LANE_ETH100:
4663                 ecmd->supported |= SUPPORTED_10baseT_Half |
4664                                         SUPPORTED_10baseT_Full |
4665                                         SUPPORTED_100baseT_Half |
4666                                         SUPPORTED_100baseT_Full |
4667                                         SUPPORTED_TP;
4668                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4669                                         ADVERTISED_10baseT_Full |
4670                                         ADVERTISED_100baseT_Half |
4671                                         ADVERTISED_100baseT_Full |
4672                                         ADVERTISED_TP;
4673                 ecmd->speed = SPEED_100;
4674                 ecmd->port = PORT_TP;
4675                 break;
4676
4677         case QETH_LINK_TYPE_GBIT_ETH:
4678         case QETH_LINK_TYPE_LANE_ETH1000:
4679                 ecmd->supported |= SUPPORTED_10baseT_Half |
4680                                         SUPPORTED_10baseT_Full |
4681                                         SUPPORTED_100baseT_Half |
4682                                         SUPPORTED_100baseT_Full |
4683                                         SUPPORTED_1000baseT_Half |
4684                                         SUPPORTED_1000baseT_Full |
4685                                         SUPPORTED_FIBRE;
4686                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4687                                         ADVERTISED_10baseT_Full |
4688                                         ADVERTISED_100baseT_Half |
4689                                         ADVERTISED_100baseT_Full |
4690                                         ADVERTISED_1000baseT_Half |
4691                                         ADVERTISED_1000baseT_Full |
4692                                         ADVERTISED_FIBRE;
4693                 ecmd->speed = SPEED_1000;
4694                 ecmd->port = PORT_FIBRE;
4695                 break;
4696
4697         case QETH_LINK_TYPE_10GBIT_ETH:
4698                 ecmd->supported |= SUPPORTED_10baseT_Half |
4699                                         SUPPORTED_10baseT_Full |
4700                                         SUPPORTED_100baseT_Half |
4701                                         SUPPORTED_100baseT_Full |
4702                                         SUPPORTED_1000baseT_Half |
4703                                         SUPPORTED_1000baseT_Full |
4704                                         SUPPORTED_10000baseT_Full |
4705                                         SUPPORTED_FIBRE;
4706                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4707                                         ADVERTISED_10baseT_Full |
4708                                         ADVERTISED_100baseT_Half |
4709                                         ADVERTISED_100baseT_Full |
4710                                         ADVERTISED_1000baseT_Half |
4711                                         ADVERTISED_1000baseT_Full |
4712                                         ADVERTISED_10000baseT_Full |
4713                                         ADVERTISED_FIBRE;
4714                 ecmd->speed = SPEED_10000;
4715                 ecmd->port = PORT_FIBRE;
4716                 break;
4717
4718         default:
4719                 ecmd->supported |= SUPPORTED_10baseT_Half |
4720                                         SUPPORTED_10baseT_Full |
4721                                         SUPPORTED_TP;
4722                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4723                                         ADVERTISED_10baseT_Full |
4724                                         ADVERTISED_TP;
4725                 ecmd->speed = SPEED_10;
4726                 ecmd->port = PORT_TP;
4727         }
4728
4729         return 0;
4730 }
4731 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4732
4733 static int __init qeth_core_init(void)
4734 {
4735         int rc;
4736
4737         pr_info("loading core functions\n");
4738         INIT_LIST_HEAD(&qeth_core_card_list.list);
4739         rwlock_init(&qeth_core_card_list.rwlock);
4740
4741         rc = qeth_register_dbf_views();
4742         if (rc)
4743                 goto out_err;
4744         rc = ccw_driver_register(&qeth_ccw_driver);
4745         if (rc)
4746                 goto ccw_err;
4747         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4748         if (rc)
4749                 goto ccwgroup_err;
4750         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4751                                 &driver_attr_group);
4752         if (rc)
4753                 goto driver_err;
4754         qeth_core_root_dev = root_device_register("qeth");
4755         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4756         if (rc)
4757                 goto register_err;
4758
4759         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4760                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4761         if (!qeth_core_header_cache) {
4762                 rc = -ENOMEM;
4763                 goto slab_err;
4764         }
4765
4766         return 0;
4767 slab_err:
4768         root_device_unregister(qeth_core_root_dev);
4769 register_err:
4770         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4771                            &driver_attr_group);
4772 driver_err:
4773         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4774 ccwgroup_err:
4775         ccw_driver_unregister(&qeth_ccw_driver);
4776 ccw_err:
4777         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4778         qeth_unregister_dbf_views();
4779 out_err:
4780         pr_err("Initializing the qeth device driver failed\n");
4781         return rc;
4782 }
4783
4784 static void __exit qeth_core_exit(void)
4785 {
4786         root_device_unregister(qeth_core_root_dev);
4787         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4788                            &driver_attr_group);
4789         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4790         ccw_driver_unregister(&qeth_ccw_driver);
4791         kmem_cache_destroy(qeth_core_header_cache);
4792         qeth_unregister_dbf_views();
4793         pr_info("core functions removed\n");
4794 }
4795
4796 module_init(qeth_core_init);
4797 module_exit(qeth_core_exit);
4798 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4799 MODULE_DESCRIPTION("qeth core functions");
4800 MODULE_LICENSE("GPL");