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