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