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