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 #include <asm/sysinfo.h>
  28
  29 #include "qeth_core.h"
  30
  31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  33         /*                   N  P  A    M  L  V                      H  */
  34         [QETH_DBF_SETUP] = {"qeth_setup",
  35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_MSG]   = {"qeth_msg",
  37                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  38         [QETH_DBF_CTRL]  = {"qeth_control",
  39                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  40 };
  41 EXPORT_SYMBOL_GPL(qeth_dbf);
  42
  43 struct qeth_card_list_struct qeth_core_card_list;
  44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  45 struct kmem_cache *qeth_core_header_cache;
  46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  47
  48 static struct device *qeth_core_root_dev;
  49 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  50 static struct lock_class_key qdio_out_skb_queue_key;
  51
  52 static void qeth_send_control_data_cb(struct qeth_channel *,
  53                         struct qeth_cmd_buffer *);
  54 static int qeth_issue_next_read(struct qeth_card *);
  55 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  56 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  57 static void qeth_free_buffer_pool(struct qeth_card *);
  58 static int qeth_qdio_establish(struct qeth_card *);
  59
  60
  61 static inline const char *qeth_get_cardname(struct qeth_card *card)
  62 {
  63         if (card->info.guestlan) {
  64                 switch (card->info.type) {
  65                 case QETH_CARD_TYPE_OSD:
  66                         return " Guest LAN QDIO";
  67                 case QETH_CARD_TYPE_IQD:
  68                         return " Guest LAN Hiper";
  69                 case QETH_CARD_TYPE_OSM:
  70                         return " Guest LAN QDIO - OSM";
  71                 case QETH_CARD_TYPE_OSX:
  72                         return " Guest LAN QDIO - OSX";
  73                 default:
  74                         return " unknown";
  75                 }
  76         } else {
  77                 switch (card->info.type) {
  78                 case QETH_CARD_TYPE_OSD:
  79                         return " OSD Express";
  80                 case QETH_CARD_TYPE_IQD:
  81                         return " HiperSockets";
  82                 case QETH_CARD_TYPE_OSN:
  83                         return " OSN QDIO";
  84                 case QETH_CARD_TYPE_OSM:
  85                         return " OSM QDIO";
  86                 case QETH_CARD_TYPE_OSX:
  87                         return " OSX QDIO";
  88                 default:
  89                         return " unknown";
  90                 }
  91         }
  92         return " n/a";
  93 }
  94
  95 /* max length to be returned: 14 */
  96 const char *qeth_get_cardname_short(struct qeth_card *card)
  97 {
  98         if (card->info.guestlan) {
  99                 switch (card->info.type) {
 100                 case QETH_CARD_TYPE_OSD:
 101                         return "GuestLAN QDIO";
 102                 case QETH_CARD_TYPE_IQD:
 103                         return "GuestLAN Hiper";
 104                 case QETH_CARD_TYPE_OSM:
 105                         return "GuestLAN OSM";
 106                 case QETH_CARD_TYPE_OSX:
 107                         return "GuestLAN OSX";
 108                 default:
 109                         return "unknown";
 110                 }
 111         } else {
 112                 switch (card->info.type) {
 113                 case QETH_CARD_TYPE_OSD:
 114                         switch (card->info.link_type) {
 115                         case QETH_LINK_TYPE_FAST_ETH:
 116                                 return "OSD_100";
 117                         case QETH_LINK_TYPE_HSTR:
 118                                 return "HSTR";
 119                         case QETH_LINK_TYPE_GBIT_ETH:
 120                                 return "OSD_1000";
 121                         case QETH_LINK_TYPE_10GBIT_ETH:
 122                                 return "OSD_10GIG";
 123                         case QETH_LINK_TYPE_LANE_ETH100:
 124                                 return "OSD_FE_LANE";
 125                         case QETH_LINK_TYPE_LANE_TR:
 126                                 return "OSD_TR_LANE";
 127                         case QETH_LINK_TYPE_LANE_ETH1000:
 128                                 return "OSD_GbE_LANE";
 129                         case QETH_LINK_TYPE_LANE:
 130                                 return "OSD_ATM_LANE";
 131                         default:
 132                                 return "OSD_Express";
 133                         }
 134                 case QETH_CARD_TYPE_IQD:
 135                         return "HiperSockets";
 136                 case QETH_CARD_TYPE_OSN:
 137                         return "OSN";
 138                 case QETH_CARD_TYPE_OSM:
 139                         return "OSM_1000";
 140                 case QETH_CARD_TYPE_OSX:
 141                         return "OSX_10GIG";
 142                 default:
 143                         return "unknown";
 144                 }
 145         }
 146         return "n/a";
 147 }
 148
 149 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 150                          int clear_start_mask)
 151 {
 152         unsigned long flags;
 153
 154         spin_lock_irqsave(&card->thread_mask_lock, flags);
 155         card->thread_allowed_mask = threads;
 156         if (clear_start_mask)
 157                 card->thread_start_mask &= threads;
 158         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 159         wake_up(&card->wait_q);
 160 }
 161 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 162
 163 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 164 {
 165         unsigned long flags;
 166         int rc = 0;
 167
 168         spin_lock_irqsave(&card->thread_mask_lock, flags);
 169         rc = (card->thread_running_mask & threads);
 170         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 171         return rc;
 172 }
 173 EXPORT_SYMBOL_GPL(qeth_threads_running);
 174
 175 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 176 {
 177         return wait_event_interruptible(card->wait_q,
 178                         qeth_threads_running(card, threads) == 0);
 179 }
 180 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 181
 182 void qeth_clear_working_pool_list(struct qeth_card *card)
 183 {
 184         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 185
 186         QETH_CARD_TEXT(card, 5, "clwrklst");
 187         list_for_each_entry_safe(pool_entry, tmp,
 188                             &card->qdio.in_buf_pool.entry_list, list){
 189                         list_del(&pool_entry->list);
 190         }
 191 }
 192 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 193
 194 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 195 {
 196         struct qeth_buffer_pool_entry *pool_entry;
 197         void *ptr;
 198         int i, j;
 199
 200         QETH_CARD_TEXT(card, 5, "alocpool");
 201         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 202                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 203                 if (!pool_entry) {
 204                         qeth_free_buffer_pool(card);
 205                         return -ENOMEM;
 206                 }
 207                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 208                         ptr = (void *) __get_free_page(GFP_KERNEL);
 209                         if (!ptr) {
 210                                 while (j > 0)
 211                                         free_page((unsigned long)
 212                                                   pool_entry->elements[--j]);
 213                                 kfree(pool_entry);
 214                                 qeth_free_buffer_pool(card);
 215                                 return -ENOMEM;
 216                         }
 217                         pool_entry->elements[j] = ptr;
 218                 }
 219                 list_add(&pool_entry->init_list,
 220                          &card->qdio.init_pool.entry_list);
 221         }
 222         return 0;
 223 }
 224
 225 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 226 {
 227         QETH_CARD_TEXT(card, 2, "realcbp");
 228
 229         if ((card->state != CARD_STATE_DOWN) &&
 230             (card->state != CARD_STATE_RECOVER))
 231                 return -EPERM;
 232
 233         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 234         qeth_clear_working_pool_list(card);
 235         qeth_free_buffer_pool(card);
 236         card->qdio.in_buf_pool.buf_count = bufcnt;
 237         card->qdio.init_pool.buf_count = bufcnt;
 238         return qeth_alloc_buffer_pool(card);
 239 }
 240 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 241
 242 static int qeth_issue_next_read(struct qeth_card *card)
 243 {
 244         int rc;
 245         struct qeth_cmd_buffer *iob;
 246
 247         QETH_CARD_TEXT(card, 5, "issnxrd");
 248         if (card->read.state != CH_STATE_UP)
 249                 return -EIO;
 250         iob = qeth_get_buffer(&card->read);
 251         if (!iob) {
 252                 dev_warn(&card->gdev->dev, "The qeth device driver "
 253                         "failed to recover an error on the device\n");
 254                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 255                         "available\n", dev_name(&card->gdev->dev));
 256                 return -ENOMEM;
 257         }
 258         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 259         QETH_CARD_TEXT(card, 6, "noirqpnd");
 260         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 261                               (addr_t) iob, 0, 0);
 262         if (rc) {
 263                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 264                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 265                 atomic_set(&card->read.irq_pending, 0);
 266                 card->read_or_write_problem = 1;
 267                 qeth_schedule_recovery(card);
 268                 wake_up(&card->wait_q);
 269         }
 270         return rc;
 271 }
 272
 273 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 274 {
 275         struct qeth_reply *reply;
 276
 277         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 278         if (reply) {
 279                 atomic_set(&reply->refcnt, 1);
 280                 atomic_set(&reply->received, 0);
 281                 reply->card = card;
 282         };
 283         return reply;
 284 }
 285
 286 static void qeth_get_reply(struct qeth_reply *reply)
 287 {
 288         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 289         atomic_inc(&reply->refcnt);
 290 }
 291
 292 static void qeth_put_reply(struct qeth_reply *reply)
 293 {
 294         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 295         if (atomic_dec_and_test(&reply->refcnt))
 296                 kfree(reply);
 297 }
 298
 299 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 300                 struct qeth_card *card)
 301 {
 302         char *ipa_name;
 303         int com = cmd->hdr.command;
 304         ipa_name = qeth_get_ipa_cmd_name(com);
 305         if (rc)
 306                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 307                                 "x%X \"%s\"\n",
 308                                 ipa_name, com, dev_name(&card->gdev->dev),
 309                                 QETH_CARD_IFNAME(card), rc,
 310                                 qeth_get_ipa_msg(rc));
 311         else
 312                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 313                                 ipa_name, com, dev_name(&card->gdev->dev),
 314                                 QETH_CARD_IFNAME(card));
 315 }
 316
 317 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 318                 struct qeth_cmd_buffer *iob)
 319 {
 320         struct qeth_ipa_cmd *cmd = NULL;
 321
 322         QETH_CARD_TEXT(card, 5, "chkipad");
 323         if (IS_IPA(iob->data)) {
 324                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 325                 if (IS_IPA_REPLY(cmd)) {
 326                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 327                             cmd->hdr.command != IPA_CMD_DELCCID &&
 328                             cmd->hdr.command != IPA_CMD_MODCCID &&
 329                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 330                                 qeth_issue_ipa_msg(cmd,
 331                                                 cmd->hdr.return_code, card);
 332                         return cmd;
 333                 } else {
 334                         switch (cmd->hdr.command) {
 335                         case IPA_CMD_STOPLAN:
 336                                 dev_warn(&card->gdev->dev,
 337                                            "The link for interface %s on CHPID"
 338                                            " 0x%X failed\n",
 339                                            QETH_CARD_IFNAME(card),
 340                                            card->info.chpid);
 341                                 card->lan_online = 0;
 342                                 if (card->dev && netif_carrier_ok(card->dev))
 343                                         netif_carrier_off(card->dev);
 344                                 return NULL;
 345                         case IPA_CMD_STARTLAN:
 346                                 dev_info(&card->gdev->dev,
 347                                            "The link for %s on CHPID 0x%X has"
 348                                            " been restored\n",
 349                                            QETH_CARD_IFNAME(card),
 350                                            card->info.chpid);
 351                                 netif_carrier_on(card->dev);
 352                                 card->lan_online = 1;
 353                                 if (card->info.hwtrap)
 354                                         card->info.hwtrap = 2;
 355                                 qeth_schedule_recovery(card);
 356                                 return NULL;
 357                         case IPA_CMD_MODCCID:
 358                                 return cmd;
 359                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 360                                 QETH_CARD_TEXT(card, 3, "irla");
 361                                 break;
 362                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 363                                 QETH_CARD_TEXT(card, 3, "urla");
 364                                 break;
 365                         default:
 366                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 367                                            "but not a reply!\n");
 368                                 break;
 369                         }
 370                 }
 371         }
 372         return cmd;
 373 }
 374
 375 void qeth_clear_ipacmd_list(struct qeth_card *card)
 376 {
 377         struct qeth_reply *reply, *r;
 378         unsigned long flags;
 379
 380         QETH_CARD_TEXT(card, 4, "clipalst");
 381
 382         spin_lock_irqsave(&card->lock, flags);
 383         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 384                 qeth_get_reply(reply);
 385                 reply->rc = -EIO;
 386                 atomic_inc(&reply->received);
 387                 list_del_init(&reply->list);
 388                 wake_up(&reply->wait_q);
 389                 qeth_put_reply(reply);
 390         }
 391         spin_unlock_irqrestore(&card->lock, flags);
 392         atomic_set(&card->write.irq_pending, 0);
 393 }
 394 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 395
 396 static int qeth_check_idx_response(struct qeth_card *card,
 397         unsigned char *buffer)
 398 {
 399         if (!buffer)
 400                 return 0;
 401
 402         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 403         if ((buffer[2] & 0xc0) == 0xc0) {
 404                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 405                            "with cause code 0x%02x%s\n",
 406                            buffer[4],
 407                            ((buffer[4] == 0x22) ?
 408                             " -- try another portname" : ""));
 409                 QETH_CARD_TEXT(card, 2, "ckidxres");
 410                 QETH_CARD_TEXT(card, 2, " idxterm");
 411                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 412                 if (buffer[4] == 0xf6) {
 413                         dev_err(&card->gdev->dev,
 414                         "The qeth device is not configured "
 415                         "for the OSI layer required by z/VM\n");
 416                         return -EPERM;
 417                 }
 418                 return -EIO;
 419         }
 420         return 0;
 421 }
 422
 423 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 424                 __u32 len)
 425 {
 426         struct qeth_card *card;
 427
 428         card = CARD_FROM_CDEV(channel->ccwdev);
 429         QETH_CARD_TEXT(card, 4, "setupccw");
 430         if (channel == &card->read)
 431                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 432         else
 433                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 434         channel->ccw.count = len;
 435         channel->ccw.cda = (__u32) __pa(iob);
 436 }
 437
 438 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 439 {
 440         __u8 index;
 441
 442         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 443         index = channel->io_buf_no;
 444         do {
 445                 if (channel->iob[index].state == BUF_STATE_FREE) {
 446                         channel->iob[index].state = BUF_STATE_LOCKED;
 447                         channel->io_buf_no = (channel->io_buf_no + 1) %
 448                                 QETH_CMD_BUFFER_NO;
 449                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 450                         return channel->iob + index;
 451                 }
 452                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 453         } while (index != channel->io_buf_no);
 454
 455         return NULL;
 456 }
 457
 458 void qeth_release_buffer(struct qeth_channel *channel,
 459                 struct qeth_cmd_buffer *iob)
 460 {
 461         unsigned long flags;
 462
 463         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 464         spin_lock_irqsave(&channel->iob_lock, flags);
 465         memset(iob->data, 0, QETH_BUFSIZE);
 466         iob->state = BUF_STATE_FREE;
 467         iob->callback = qeth_send_control_data_cb;
 468         iob->rc = 0;
 469         spin_unlock_irqrestore(&channel->iob_lock, flags);
 470 }
 471 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 472
 473 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 474 {
 475         struct qeth_cmd_buffer *buffer = NULL;
 476         unsigned long flags;
 477
 478         spin_lock_irqsave(&channel->iob_lock, flags);
 479         buffer = __qeth_get_buffer(channel);
 480         spin_unlock_irqrestore(&channel->iob_lock, flags);
 481         return buffer;
 482 }
 483
 484 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 485 {
 486         struct qeth_cmd_buffer *buffer;
 487         wait_event(channel->wait_q,
 488                    ((buffer = qeth_get_buffer(channel)) != NULL));
 489         return buffer;
 490 }
 491 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 492
 493 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 494 {
 495         int cnt;
 496
 497         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 498                 qeth_release_buffer(channel, &channel->iob[cnt]);
 499         channel->buf_no = 0;
 500         channel->io_buf_no = 0;
 501 }
 502 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 503
 504 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 505                   struct qeth_cmd_buffer *iob)
 506 {
 507         struct qeth_card *card;
 508         struct qeth_reply *reply, *r;
 509         struct qeth_ipa_cmd *cmd;
 510         unsigned long flags;
 511         int keep_reply;
 512         int rc = 0;
 513
 514         card = CARD_FROM_CDEV(channel->ccwdev);
 515         QETH_CARD_TEXT(card, 4, "sndctlcb");
 516         rc = qeth_check_idx_response(card, iob->data);
 517         switch (rc) {
 518         case 0:
 519                 break;
 520         case -EIO:
 521                 qeth_clear_ipacmd_list(card);
 522                 qeth_schedule_recovery(card);
 523                 /* fall through */
 524         default:
 525                 goto out;
 526         }
 527
 528         cmd = qeth_check_ipa_data(card, iob);
 529         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 530                 goto out;
 531         /*in case of OSN : check if cmd is set */
 532         if (card->info.type == QETH_CARD_TYPE_OSN &&
 533             cmd &&
 534             cmd->hdr.command != IPA_CMD_STARTLAN &&
 535             card->osn_info.assist_cb != NULL) {
 536                 card->osn_info.assist_cb(card->dev, cmd);
 537                 goto out;
 538         }
 539
 540         spin_lock_irqsave(&card->lock, flags);
 541         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 542                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 543                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 544                         qeth_get_reply(reply);
 545                         list_del_init(&reply->list);
 546                         spin_unlock_irqrestore(&card->lock, flags);
 547                         keep_reply = 0;
 548                         if (reply->callback != NULL) {
 549                                 if (cmd) {
 550                                         reply->offset = (__u16)((char *)cmd -
 551                                                         (char *)iob->data);
 552                                         keep_reply = reply->callback(card,
 553                                                         reply,
 554                                                         (unsigned long)cmd);
 555                                 } else
 556                                         keep_reply = reply->callback(card,
 557                                                         reply,
 558                                                         (unsigned long)iob);
 559                         }
 560                         if (cmd)
 561                                 reply->rc = (u16) cmd->hdr.return_code;
 562                         else if (iob->rc)
 563                                 reply->rc = iob->rc;
 564                         if (keep_reply) {
 565                                 spin_lock_irqsave(&card->lock, flags);
 566                                 list_add_tail(&reply->list,
 567                                               &card->cmd_waiter_list);
 568                                 spin_unlock_irqrestore(&card->lock, flags);
 569                         } else {
 570                                 atomic_inc(&reply->received);
 571                                 wake_up(&reply->wait_q);
 572                         }
 573                         qeth_put_reply(reply);
 574                         goto out;
 575                 }
 576         }
 577         spin_unlock_irqrestore(&card->lock, flags);
 578 out:
 579         memcpy(&card->seqno.pdu_hdr_ack,
 580                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 581                 QETH_SEQ_NO_LENGTH);
 582         qeth_release_buffer(channel, iob);
 583 }
 584
 585 static int qeth_setup_channel(struct qeth_channel *channel)
 586 {
 587         int cnt;
 588
 589         QETH_DBF_TEXT(SETUP, 2, "setupch");
 590         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 591                 channel->iob[cnt].data =
 592                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 593                 if (channel->iob[cnt].data == NULL)
 594                         break;
 595                 channel->iob[cnt].state = BUF_STATE_FREE;
 596                 channel->iob[cnt].channel = channel;
 597                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 598                 channel->iob[cnt].rc = 0;
 599         }
 600         if (cnt < QETH_CMD_BUFFER_NO) {
 601                 while (cnt-- > 0)
 602                         kfree(channel->iob[cnt].data);
 603                 return -ENOMEM;
 604         }
 605         channel->buf_no = 0;
 606         channel->io_buf_no = 0;
 607         atomic_set(&channel->irq_pending, 0);
 608         spin_lock_init(&channel->iob_lock);
 609
 610         init_waitqueue_head(&channel->wait_q);
 611         return 0;
 612 }
 613
 614 static int qeth_set_thread_start_bit(struct qeth_card *card,
 615                 unsigned long thread)
 616 {
 617         unsigned long flags;
 618
 619         spin_lock_irqsave(&card->thread_mask_lock, flags);
 620         if (!(card->thread_allowed_mask & thread) ||
 621               (card->thread_start_mask & thread)) {
 622                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 623                 return -EPERM;
 624         }
 625         card->thread_start_mask |= thread;
 626         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 627         return 0;
 628 }
 629
 630 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 631 {
 632         unsigned long flags;
 633
 634         spin_lock_irqsave(&card->thread_mask_lock, flags);
 635         card->thread_start_mask &= ~thread;
 636         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 637         wake_up(&card->wait_q);
 638 }
 639 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 640
 641 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 642 {
 643         unsigned long flags;
 644
 645         spin_lock_irqsave(&card->thread_mask_lock, flags);
 646         card->thread_running_mask &= ~thread;
 647         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 648         wake_up(&card->wait_q);
 649 }
 650 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 651
 652 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 653 {
 654         unsigned long flags;
 655         int rc = 0;
 656
 657         spin_lock_irqsave(&card->thread_mask_lock, flags);
 658         if (card->thread_start_mask & thread) {
 659                 if ((card->thread_allowed_mask & thread) &&
 660                     !(card->thread_running_mask & thread)) {
 661                         rc = 1;
 662                         card->thread_start_mask &= ~thread;
 663                         card->thread_running_mask |= thread;
 664                 } else
 665                         rc = -EPERM;
 666         }
 667         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 668         return rc;
 669 }
 670
 671 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 672 {
 673         int rc = 0;
 674
 675         wait_event(card->wait_q,
 676                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 677         return rc;
 678 }
 679 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 680
 681 void qeth_schedule_recovery(struct qeth_card *card)
 682 {
 683         QETH_CARD_TEXT(card, 2, "startrec");
 684         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 685                 schedule_work(&card->kernel_thread_starter);
 686 }
 687 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 688
 689 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 690 {
 691         int dstat, cstat;
 692         char *sense;
 693         struct qeth_card *card;
 694
 695         sense = (char *) irb->ecw;
 696         cstat = irb->scsw.cmd.cstat;
 697         dstat = irb->scsw.cmd.dstat;
 698         card = CARD_FROM_CDEV(cdev);
 699
 700         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 701                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 702                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 703                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 704                 dev_warn(&cdev->dev, "The qeth device driver "
 705                         "failed to recover an error on the device\n");
 706                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 707                         dev_name(&cdev->dev), dstat, cstat);
 708                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 709                                 16, 1, irb, 64, 1);
 710                 return 1;
 711         }
 712
 713         if (dstat & DEV_STAT_UNIT_CHECK) {
 714                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 715                     SENSE_RESETTING_EVENT_FLAG) {
 716                         QETH_CARD_TEXT(card, 2, "REVIND");
 717                         return 1;
 718                 }
 719                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 720                     SENSE_COMMAND_REJECT_FLAG) {
 721                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 722                         return 1;
 723                 }
 724                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 725                         QETH_CARD_TEXT(card, 2, "AFFE");
 726                         return 1;
 727                 }
 728                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 729                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 730                         return 0;
 731                 }
 732                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 733                         return 1;
 734         }
 735         return 0;
 736 }
 737
 738 static long __qeth_check_irb_error(struct ccw_device *cdev,
 739                 unsigned long intparm, struct irb *irb)
 740 {
 741         struct qeth_card *card;
 742
 743         card = CARD_FROM_CDEV(cdev);
 744
 745         if (!IS_ERR(irb))
 746                 return 0;
 747
 748         switch (PTR_ERR(irb)) {
 749         case -EIO:
 750                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 751                         dev_name(&cdev->dev));
 752                 QETH_CARD_TEXT(card, 2, "ckirberr");
 753                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 754                 break;
 755         case -ETIMEDOUT:
 756                 dev_warn(&cdev->dev, "A hardware operation timed out"
 757                         " on the device\n");
 758                 QETH_CARD_TEXT(card, 2, "ckirberr");
 759                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 760                 if (intparm == QETH_RCD_PARM) {
 761                         if (card && (card->data.ccwdev == cdev)) {
 762                                 card->data.state = CH_STATE_DOWN;
 763                                 wake_up(&card->wait_q);
 764                         }
 765                 }
 766                 break;
 767         default:
 768                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 769                         dev_name(&cdev->dev), PTR_ERR(irb));
 770                 QETH_CARD_TEXT(card, 2, "ckirberr");
 771                 QETH_CARD_TEXT(card, 2, "  rc???");
 772         }
 773         return PTR_ERR(irb);
 774 }
 775
 776 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 777                 struct irb *irb)
 778 {
 779         int rc;
 780         int cstat, dstat;
 781         struct qeth_cmd_buffer *buffer;
 782         struct qeth_channel *channel;
 783         struct qeth_card *card;
 784         struct qeth_cmd_buffer *iob;
 785         __u8 index;
 786
 787         if (__qeth_check_irb_error(cdev, intparm, irb))
 788                 return;
 789         cstat = irb->scsw.cmd.cstat;
 790         dstat = irb->scsw.cmd.dstat;
 791
 792         card = CARD_FROM_CDEV(cdev);
 793         if (!card)
 794                 return;
 795
 796         QETH_CARD_TEXT(card, 5, "irq");
 797
 798         if (card->read.ccwdev == cdev) {
 799                 channel = &card->read;
 800                 QETH_CARD_TEXT(card, 5, "read");
 801         } else if (card->write.ccwdev == cdev) {
 802                 channel = &card->write;
 803                 QETH_CARD_TEXT(card, 5, "write");
 804         } else {
 805                 channel = &card->data;
 806                 QETH_CARD_TEXT(card, 5, "data");
 807         }
 808         atomic_set(&channel->irq_pending, 0);
 809
 810         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 811                 channel->state = CH_STATE_STOPPED;
 812
 813         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 814                 channel->state = CH_STATE_HALTED;
 815
 816         /*let's wake up immediately on data channel*/
 817         if ((channel == &card->data) && (intparm != 0) &&
 818             (intparm != QETH_RCD_PARM))
 819                 goto out;
 820
 821         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 822                 QETH_CARD_TEXT(card, 6, "clrchpar");
 823                 /* we don't have to handle this further */
 824                 intparm = 0;
 825         }
 826         if (intparm == QETH_HALT_CHANNEL_PARM) {
 827                 QETH_CARD_TEXT(card, 6, "hltchpar");
 828                 /* we don't have to handle this further */
 829                 intparm = 0;
 830         }
 831         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 832             (dstat & DEV_STAT_UNIT_CHECK) ||
 833             (cstat)) {
 834                 if (irb->esw.esw0.erw.cons) {
 835                         dev_warn(&channel->ccwdev->dev,
 836                                 "The qeth device driver failed to recover "
 837                                 "an error on the device\n");
 838                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 839                                 "0x%X dstat 0x%X\n",
 840                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 841                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 842                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 843                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 844                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 845                 }
 846                 if (intparm == QETH_RCD_PARM) {
 847                         channel->state = CH_STATE_DOWN;
 848                         goto out;
 849                 }
 850                 rc = qeth_get_problem(cdev, irb);
 851                 if (rc) {
 852                         qeth_clear_ipacmd_list(card);
 853                         qeth_schedule_recovery(card);
 854                         goto out;
 855                 }
 856         }
 857
 858         if (intparm == QETH_RCD_PARM) {
 859                 channel->state = CH_STATE_RCD_DONE;
 860                 goto out;
 861         }
 862         if (intparm) {
 863                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 864                 buffer->state = BUF_STATE_PROCESSED;
 865         }
 866         if (channel == &card->data)
 867                 return;
 868         if (channel == &card->read &&
 869             channel->state == CH_STATE_UP)
 870                 qeth_issue_next_read(card);
 871
 872         iob = channel->iob;
 873         index = channel->buf_no;
 874         while (iob[index].state == BUF_STATE_PROCESSED) {
 875                 if (iob[index].callback != NULL)
 876                         iob[index].callback(channel, iob + index);
 877
 878                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 879         }
 880         channel->buf_no = index;
 881 out:
 882         wake_up(&card->wait_q);
 883         return;
 884 }
 885
 886 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 887                 struct qeth_qdio_out_buffer *buf)
 888 {
 889         int i;
 890         struct sk_buff *skb;
 891
 892         /* is PCI flag set on buffer? */
 893         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
 894                 atomic_dec(&queue->set_pci_flags_count);
 895
 896         skb = skb_dequeue(&buf->skb_list);
 897         while (skb) {
 898                 atomic_dec(&skb->users);
 899                 dev_kfree_skb_any(skb);
 900                 skb = skb_dequeue(&buf->skb_list);
 901         }
 902         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 903                 if (buf->buffer->element[i].addr && buf->is_header[i])
 904                         kmem_cache_free(qeth_core_header_cache,
 905                                 buf->buffer->element[i].addr);
 906                 buf->is_header[i] = 0;
 907                 buf->buffer->element[i].length = 0;
 908                 buf->buffer->element[i].addr = NULL;
 909                 buf->buffer->element[i].eflags = 0;
 910                 buf->buffer->element[i].sflags = 0;
 911         }
 912         buf->buffer->element[15].eflags = 0;
 913         buf->buffer->element[15].sflags = 0;
 914         buf->next_element_to_fill = 0;
 915         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 916 }
 917
 918 void qeth_clear_qdio_buffers(struct qeth_card *card)
 919 {
 920         int i, j;
 921
 922         QETH_CARD_TEXT(card, 2, "clearqdbf");
 923         /* clear outbound buffers to free skbs */
 924         for (i = 0; i < card->qdio.no_out_queues; ++i)
 925                 if (card->qdio.out_qs[i]) {
 926                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 927                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 928                                                 &card->qdio.out_qs[i]->bufs[j]);
 929                 }
 930 }
 931 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 932
 933 static void qeth_free_buffer_pool(struct qeth_card *card)
 934 {
 935         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 936         int i = 0;
 937         list_for_each_entry_safe(pool_entry, tmp,
 938                                  &card->qdio.init_pool.entry_list, init_list){
 939                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 940                         free_page((unsigned long)pool_entry->elements[i]);
 941                 list_del(&pool_entry->init_list);
 942                 kfree(pool_entry);
 943         }
 944 }
 945
 946 static void qeth_free_qdio_buffers(struct qeth_card *card)
 947 {
 948         int i, j;
 949
 950         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 951                 QETH_QDIO_UNINITIALIZED)
 952                 return;
 953         kfree(card->qdio.in_q);
 954         card->qdio.in_q = NULL;
 955         /* inbound buffer pool */
 956         qeth_free_buffer_pool(card);
 957         /* free outbound qdio_qs */
 958         if (card->qdio.out_qs) {
 959                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 960                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 961                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 962                                                 &card->qdio.out_qs[i]->bufs[j]);
 963                         kfree(card->qdio.out_qs[i]);
 964                 }
 965                 kfree(card->qdio.out_qs);
 966                 card->qdio.out_qs = NULL;
 967         }
 968 }
 969
 970 static void qeth_clean_channel(struct qeth_channel *channel)
 971 {
 972         int cnt;
 973
 974         QETH_DBF_TEXT(SETUP, 2, "freech");
 975         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 976                 kfree(channel->iob[cnt].data);
 977 }
 978
 979 static void qeth_get_channel_path_desc(struct qeth_card *card)
 980 {
 981         struct ccw_device *ccwdev;
 982         struct channelPath_dsc {
 983                 u8 flags;
 984                 u8 lsn;
 985                 u8 desc;
 986                 u8 chpid;
 987                 u8 swla;
 988                 u8 zeroes;
 989                 u8 chla;
 990                 u8 chpp;
 991         } *chp_dsc;
 992
 993         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
 994
 995         ccwdev = card->data.ccwdev;
 996         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
 997         if (chp_dsc != NULL) {
 998                 /* CHPP field bit 6 == 1 -> single queue */
 999                 if ((chp_dsc->chpp & 0x02) == 0x02) {
1000                         if ((atomic_read(&card->qdio.state) !=
1001                                 QETH_QDIO_UNINITIALIZED) &&
1002                             (card->qdio.no_out_queues == 4))
1003                                 /* change from 4 to 1 outbound queues */
1004                                 qeth_free_qdio_buffers(card);
1005                         card->qdio.no_out_queues = 1;
1006                         if (card->qdio.default_out_queue != 0)
1007                                 dev_info(&card->gdev->dev,
1008                                         "Priority Queueing not supported\n");
1009                         card->qdio.default_out_queue = 0;
1010                 } else {
1011                         if ((atomic_read(&card->qdio.state) !=
1012                                 QETH_QDIO_UNINITIALIZED) &&
1013                             (card->qdio.no_out_queues == 1)) {
1014                                 /* change from 1 to 4 outbound queues */
1015                                 qeth_free_qdio_buffers(card);
1016                                 card->qdio.default_out_queue = 2;
1017                         }
1018                         card->qdio.no_out_queues = 4;
1019                 }
1020                 card->info.func_level = 0x4100 + chp_dsc->desc;
1021                 kfree(chp_dsc);
1022         }
1023         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1024         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1025         return;
1026 }
1027
1028 static void qeth_init_qdio_info(struct qeth_card *card)
1029 {
1030         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1031         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1032         /* inbound */
1033         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1034         if (card->info.type == QETH_CARD_TYPE_IQD)
1035                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1036         else
1037                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1038         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1039         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1040         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1041 }
1042
1043 static void qeth_set_intial_options(struct qeth_card *card)
1044 {
1045         card->options.route4.type = NO_ROUTER;
1046         card->options.route6.type = NO_ROUTER;
1047         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1048         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1049         card->options.fake_broadcast = 0;
1050         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1051         card->options.performance_stats = 0;
1052         card->options.rx_sg_cb = QETH_RX_SG_CB;
1053         card->options.isolation = ISOLATION_MODE_NONE;
1054 }
1055
1056 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1057 {
1058         unsigned long flags;
1059         int rc = 0;
1060
1061         spin_lock_irqsave(&card->thread_mask_lock, flags);
1062         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1063                         (u8) card->thread_start_mask,
1064                         (u8) card->thread_allowed_mask,
1065                         (u8) card->thread_running_mask);
1066         rc = (card->thread_start_mask & thread);
1067         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1068         return rc;
1069 }
1070
1071 static void qeth_start_kernel_thread(struct work_struct *work)
1072 {
1073         struct qeth_card *card = container_of(work, struct qeth_card,
1074                                         kernel_thread_starter);
1075         QETH_CARD_TEXT(card , 2, "strthrd");
1076
1077         if (card->read.state != CH_STATE_UP &&
1078             card->write.state != CH_STATE_UP)
1079                 return;
1080         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1081                 kthread_run(card->discipline.recover, (void *) card,
1082                                 "qeth_recover");
1083 }
1084
1085 static int qeth_setup_card(struct qeth_card *card)
1086 {
1087
1088         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1089         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1090
1091         card->read.state  = CH_STATE_DOWN;
1092         card->write.state = CH_STATE_DOWN;
1093         card->data.state  = CH_STATE_DOWN;
1094         card->state = CARD_STATE_DOWN;
1095         card->lan_online = 0;
1096         card->read_or_write_problem = 0;
1097         card->dev = NULL;
1098         spin_lock_init(&card->vlanlock);
1099         spin_lock_init(&card->mclock);
1100         card->vlangrp = NULL;
1101         spin_lock_init(&card->lock);
1102         spin_lock_init(&card->ip_lock);
1103         spin_lock_init(&card->thread_mask_lock);
1104         mutex_init(&card->conf_mutex);
1105         mutex_init(&card->discipline_mutex);
1106         card->thread_start_mask = 0;
1107         card->thread_allowed_mask = 0;
1108         card->thread_running_mask = 0;
1109         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1110         INIT_LIST_HEAD(&card->ip_list);
1111         INIT_LIST_HEAD(card->ip_tbd_list);
1112         INIT_LIST_HEAD(&card->cmd_waiter_list);
1113         init_waitqueue_head(&card->wait_q);
1114         /* initial options */
1115         qeth_set_intial_options(card);
1116         /* IP address takeover */
1117         INIT_LIST_HEAD(&card->ipato.entries);
1118         card->ipato.enabled = 0;
1119         card->ipato.invert4 = 0;
1120         card->ipato.invert6 = 0;
1121         /* init QDIO stuff */
1122         qeth_init_qdio_info(card);
1123         return 0;
1124 }
1125
1126 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1127 {
1128         struct qeth_card *card = container_of(slr, struct qeth_card,
1129                                         qeth_service_level);
1130         if (card->info.mcl_level[0])
1131                 seq_printf(m, "qeth: %s firmware level %s\n",
1132                         CARD_BUS_ID(card), card->info.mcl_level);
1133 }
1134
1135 static struct qeth_card *qeth_alloc_card(void)
1136 {
1137         struct qeth_card *card;
1138
1139         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1140         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1141         if (!card)
1142                 goto out;
1143         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1144         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1145         if (!card->ip_tbd_list) {
1146                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1147                 goto out_card;
1148         }
1149         if (qeth_setup_channel(&card->read))
1150                 goto out_ip;
1151         if (qeth_setup_channel(&card->write))
1152                 goto out_channel;
1153         card->options.layer2 = -1;
1154         card->qeth_service_level.seq_print = qeth_core_sl_print;
1155         register_service_level(&card->qeth_service_level);
1156         return card;
1157
1158 out_channel:
1159         qeth_clean_channel(&card->read);
1160 out_ip:
1161         kfree(card->ip_tbd_list);
1162 out_card:
1163         kfree(card);
1164 out:
1165         return NULL;
1166 }
1167
1168 static int qeth_determine_card_type(struct qeth_card *card)
1169 {
1170         int i = 0;
1171
1172         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1173
1174         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1175         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1176         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1177                 if ((CARD_RDEV(card)->id.dev_type ==
1178                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1179                     (CARD_RDEV(card)->id.dev_model ==
1180                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1181                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1182                         card->qdio.no_out_queues =
1183                                 known_devices[i][QETH_QUEUE_NO_IND];
1184                         card->info.is_multicast_different =
1185                                 known_devices[i][QETH_MULTICAST_IND];
1186                         qeth_get_channel_path_desc(card);
1187                         return 0;
1188                 }
1189                 i++;
1190         }
1191         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1192         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1193                 "unknown type\n");
1194         return -ENOENT;
1195 }
1196
1197 static int qeth_clear_channel(struct qeth_channel *channel)
1198 {
1199         unsigned long flags;
1200         struct qeth_card *card;
1201         int rc;
1202
1203         card = CARD_FROM_CDEV(channel->ccwdev);
1204         QETH_CARD_TEXT(card, 3, "clearch");
1205         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1206         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1207         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1208
1209         if (rc)
1210                 return rc;
1211         rc = wait_event_interruptible_timeout(card->wait_q,
1212                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1213         if (rc == -ERESTARTSYS)
1214                 return rc;
1215         if (channel->state != CH_STATE_STOPPED)
1216                 return -ETIME;
1217         channel->state = CH_STATE_DOWN;
1218         return 0;
1219 }
1220
1221 static int qeth_halt_channel(struct qeth_channel *channel)
1222 {
1223         unsigned long flags;
1224         struct qeth_card *card;
1225         int rc;
1226
1227         card = CARD_FROM_CDEV(channel->ccwdev);
1228         QETH_CARD_TEXT(card, 3, "haltch");
1229         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1230         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1231         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1232
1233         if (rc)
1234                 return rc;
1235         rc = wait_event_interruptible_timeout(card->wait_q,
1236                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1237         if (rc == -ERESTARTSYS)
1238                 return rc;
1239         if (channel->state != CH_STATE_HALTED)
1240                 return -ETIME;
1241         return 0;
1242 }
1243
1244 static int qeth_halt_channels(struct qeth_card *card)
1245 {
1246         int rc1 = 0, rc2 = 0, rc3 = 0;
1247
1248         QETH_CARD_TEXT(card, 3, "haltchs");
1249         rc1 = qeth_halt_channel(&card->read);
1250         rc2 = qeth_halt_channel(&card->write);
1251         rc3 = qeth_halt_channel(&card->data);
1252         if (rc1)
1253                 return rc1;
1254         if (rc2)
1255                 return rc2;
1256         return rc3;
1257 }
1258
1259 static int qeth_clear_channels(struct qeth_card *card)
1260 {
1261         int rc1 = 0, rc2 = 0, rc3 = 0;
1262
1263         QETH_CARD_TEXT(card, 3, "clearchs");
1264         rc1 = qeth_clear_channel(&card->read);
1265         rc2 = qeth_clear_channel(&card->write);
1266         rc3 = qeth_clear_channel(&card->data);
1267         if (rc1)
1268                 return rc1;
1269         if (rc2)
1270                 return rc2;
1271         return rc3;
1272 }
1273
1274 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1275 {
1276         int rc = 0;
1277
1278         QETH_CARD_TEXT(card, 3, "clhacrd");
1279
1280         if (halt)
1281                 rc = qeth_halt_channels(card);
1282         if (rc)
1283                 return rc;
1284         return qeth_clear_channels(card);
1285 }
1286
1287 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1288 {
1289         int rc = 0;
1290
1291         QETH_CARD_TEXT(card, 3, "qdioclr");
1292         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1293                 QETH_QDIO_CLEANING)) {
1294         case QETH_QDIO_ESTABLISHED:
1295                 if (card->info.type == QETH_CARD_TYPE_IQD)
1296                         rc = qdio_shutdown(CARD_DDEV(card),
1297                                 QDIO_FLAG_CLEANUP_USING_HALT);
1298                 else
1299                         rc = qdio_shutdown(CARD_DDEV(card),
1300                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1301                 if (rc)
1302                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1303                 qdio_free(CARD_DDEV(card));
1304                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1305                 break;
1306         case QETH_QDIO_CLEANING:
1307                 return rc;
1308         default:
1309                 break;
1310         }
1311         rc = qeth_clear_halt_card(card, use_halt);
1312         if (rc)
1313                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1314         card->state = CARD_STATE_DOWN;
1315         return rc;
1316 }
1317 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1318
1319 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1320                                int *length)
1321 {
1322         struct ciw *ciw;
1323         char *rcd_buf;
1324         int ret;
1325         struct qeth_channel *channel = &card->data;
1326         unsigned long flags;
1327
1328         /*
1329          * scan for RCD command in extended SenseID data
1330          */
1331         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1332         if (!ciw || ciw->cmd == 0)
1333                 return -EOPNOTSUPP;
1334         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1335         if (!rcd_buf)
1336                 return -ENOMEM;
1337
1338         channel->ccw.cmd_code = ciw->cmd;
1339         channel->ccw.cda = (__u32) __pa(rcd_buf);
1340         channel->ccw.count = ciw->count;
1341         channel->ccw.flags = CCW_FLAG_SLI;
1342         channel->state = CH_STATE_RCD;
1343         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1344         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1345                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1346                                        QETH_RCD_TIMEOUT);
1347         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1348         if (!ret)
1349                 wait_event(card->wait_q,
1350                            (channel->state == CH_STATE_RCD_DONE ||
1351                             channel->state == CH_STATE_DOWN));
1352         if (channel->state == CH_STATE_DOWN)
1353                 ret = -EIO;
1354         else
1355                 channel->state = CH_STATE_DOWN;
1356         if (ret) {
1357                 kfree(rcd_buf);
1358                 *buffer = NULL;
1359                 *length = 0;
1360         } else {
1361                 *length = ciw->count;
1362                 *buffer = rcd_buf;
1363         }
1364         return ret;
1365 }
1366
1367 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1368 {
1369         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1370         card->info.chpid = prcd[30];
1371         card->info.unit_addr2 = prcd[31];
1372         card->info.cula = prcd[63];
1373         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1374                                (prcd[0x11] == _ascebc['M']));
1375 }
1376
1377 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1378 {
1379         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1380
1381         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1382                 card->info.blkt.time_total = 250;
1383                 card->info.blkt.inter_packet = 5;
1384                 card->info.blkt.inter_packet_jumbo = 15;
1385         } else {
1386                 card->info.blkt.time_total = 0;
1387                 card->info.blkt.inter_packet = 0;
1388                 card->info.blkt.inter_packet_jumbo = 0;
1389         }
1390 }
1391
1392 static void qeth_init_tokens(struct qeth_card *card)
1393 {
1394         card->token.issuer_rm_w = 0x00010103UL;
1395         card->token.cm_filter_w = 0x00010108UL;
1396         card->token.cm_connection_w = 0x0001010aUL;
1397         card->token.ulp_filter_w = 0x0001010bUL;
1398         card->token.ulp_connection_w = 0x0001010dUL;
1399 }
1400
1401 static void qeth_init_func_level(struct qeth_card *card)
1402 {
1403         switch (card->info.type) {
1404         case QETH_CARD_TYPE_IQD:
1405                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1406                 break;
1407         case QETH_CARD_TYPE_OSD:
1408         case QETH_CARD_TYPE_OSN:
1409                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1410                 break;
1411         default:
1412                 break;
1413         }
1414 }
1415
1416 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1417                 void (*idx_reply_cb)(struct qeth_channel *,
1418                         struct qeth_cmd_buffer *))
1419 {
1420         struct qeth_cmd_buffer *iob;
1421         unsigned long flags;
1422         int rc;
1423         struct qeth_card *card;
1424
1425         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1426         card = CARD_FROM_CDEV(channel->ccwdev);
1427         iob = qeth_get_buffer(channel);
1428         iob->callback = idx_reply_cb;
1429         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1430         channel->ccw.count = QETH_BUFSIZE;
1431         channel->ccw.cda = (__u32) __pa(iob->data);
1432
1433         wait_event(card->wait_q,
1434                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1435         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1436         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1437         rc = ccw_device_start(channel->ccwdev,
1438                               &channel->ccw, (addr_t) iob, 0, 0);
1439         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1440
1441         if (rc) {
1442                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1443                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1444                 atomic_set(&channel->irq_pending, 0);
1445                 wake_up(&card->wait_q);
1446                 return rc;
1447         }
1448         rc = wait_event_interruptible_timeout(card->wait_q,
1449                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1450         if (rc == -ERESTARTSYS)
1451                 return rc;
1452         if (channel->state != CH_STATE_UP) {
1453                 rc = -ETIME;
1454                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1455                 qeth_clear_cmd_buffers(channel);
1456         } else
1457                 rc = 0;
1458         return rc;
1459 }
1460
1461 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1462                 void (*idx_reply_cb)(struct qeth_channel *,
1463                         struct qeth_cmd_buffer *))
1464 {
1465         struct qeth_card *card;
1466         struct qeth_cmd_buffer *iob;
1467         unsigned long flags;
1468         __u16 temp;
1469         __u8 tmp;
1470         int rc;
1471         struct ccw_dev_id temp_devid;
1472
1473         card = CARD_FROM_CDEV(channel->ccwdev);
1474
1475         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1476
1477         iob = qeth_get_buffer(channel);
1478         iob->callback = idx_reply_cb;
1479         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1480         channel->ccw.count = IDX_ACTIVATE_SIZE;
1481         channel->ccw.cda = (__u32) __pa(iob->data);
1482         if (channel == &card->write) {
1483                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1484                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1485                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1486                 card->seqno.trans_hdr++;
1487         } else {
1488                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1489                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1490                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1491         }
1492         tmp = ((__u8)card->info.portno) | 0x80;
1493         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1494         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1495                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1496         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1497                &card->info.func_level, sizeof(__u16));
1498         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1499         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1500         temp = (card->info.cula << 8) + card->info.unit_addr2;
1501         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1502
1503         wait_event(card->wait_q,
1504                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1505         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1506         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1507         rc = ccw_device_start(channel->ccwdev,
1508                               &channel->ccw, (addr_t) iob, 0, 0);
1509         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1510
1511         if (rc) {
1512                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1513                         rc);
1514                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1515                 atomic_set(&channel->irq_pending, 0);
1516                 wake_up(&card->wait_q);
1517                 return rc;
1518         }
1519         rc = wait_event_interruptible_timeout(card->wait_q,
1520                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1521         if (rc == -ERESTARTSYS)
1522                 return rc;
1523         if (channel->state != CH_STATE_ACTIVATING) {
1524                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1525                         " failed to recover an error on the device\n");
1526                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1527                         dev_name(&channel->ccwdev->dev));
1528                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1529                 qeth_clear_cmd_buffers(channel);
1530                 return -ETIME;
1531         }
1532         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1533 }
1534
1535 static int qeth_peer_func_level(int level)
1536 {
1537         if ((level & 0xff) == 8)
1538                 return (level & 0xff) + 0x400;
1539         if (((level >> 8) & 3) == 1)
1540                 return (level & 0xff) + 0x200;
1541         return level;
1542 }
1543
1544 static void qeth_idx_write_cb(struct qeth_channel *channel,
1545                 struct qeth_cmd_buffer *iob)
1546 {
1547         struct qeth_card *card;
1548         __u16 temp;
1549
1550         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1551
1552         if (channel->state == CH_STATE_DOWN) {
1553                 channel->state = CH_STATE_ACTIVATING;
1554                 goto out;
1555         }
1556         card = CARD_FROM_CDEV(channel->ccwdev);
1557
1558         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1559                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1560                         dev_err(&card->write.ccwdev->dev,
1561                                 "The adapter is used exclusively by another "
1562                                 "host\n");
1563                 else
1564                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1565                                 " negative reply\n",
1566                                 dev_name(&card->write.ccwdev->dev));
1567                 goto out;
1568         }
1569         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1570         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1571                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1572                         "function level mismatch (sent: 0x%x, received: "
1573                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1574                         card->info.func_level, temp);
1575                 goto out;
1576         }
1577         channel->state = CH_STATE_UP;
1578 out:
1579         qeth_release_buffer(channel, iob);
1580 }
1581
1582 static void qeth_idx_read_cb(struct qeth_channel *channel,
1583                 struct qeth_cmd_buffer *iob)
1584 {
1585         struct qeth_card *card;
1586         __u16 temp;
1587
1588         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1589         if (channel->state == CH_STATE_DOWN) {
1590                 channel->state = CH_STATE_ACTIVATING;
1591                 goto out;
1592         }
1593
1594         card = CARD_FROM_CDEV(channel->ccwdev);
1595         if (qeth_check_idx_response(card, iob->data))
1596                         goto out;
1597
1598         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1599                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1600                 case QETH_IDX_ACT_ERR_EXCL:
1601                         dev_err(&card->write.ccwdev->dev,
1602                                 "The adapter is used exclusively by another "
1603                                 "host\n");
1604                         break;
1605                 case QETH_IDX_ACT_ERR_AUTH:
1606                 case QETH_IDX_ACT_ERR_AUTH_USER:
1607                         dev_err(&card->read.ccwdev->dev,
1608                                 "Setting the device online failed because of "
1609                                 "insufficient authorization\n");
1610                         break;
1611                 default:
1612                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1613                                 " negative reply\n",
1614                                 dev_name(&card->read.ccwdev->dev));
1615                 }
1616                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1617                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1618                 goto out;
1619         }
1620
1621 /**
1622  *  * temporary fix for microcode bug
1623  *   * to revert it,replace OR by AND
1624  *    */
1625         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1626              (card->info.type == QETH_CARD_TYPE_OSD))
1627                 card->info.portname_required = 1;
1628
1629         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1630         if (temp != qeth_peer_func_level(card->info.func_level)) {
1631                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1632                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1633                         dev_name(&card->read.ccwdev->dev),
1634                         card->info.func_level, temp);
1635                 goto out;
1636         }
1637         memcpy(&card->token.issuer_rm_r,
1638                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1639                QETH_MPC_TOKEN_LENGTH);
1640         memcpy(&card->info.mcl_level[0],
1641                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1642         channel->state = CH_STATE_UP;
1643 out:
1644         qeth_release_buffer(channel, iob);
1645 }
1646
1647 void qeth_prepare_control_data(struct qeth_card *card, int len,
1648                 struct qeth_cmd_buffer *iob)
1649 {
1650         qeth_setup_ccw(&card->write, iob->data, len);
1651         iob->callback = qeth_release_buffer;
1652
1653         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1654                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1655         card->seqno.trans_hdr++;
1656         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1657                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1658         card->seqno.pdu_hdr++;
1659         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1660                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1661         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1662 }
1663 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1664
1665 int qeth_send_control_data(struct qeth_card *card, int len,
1666                 struct qeth_cmd_buffer *iob,
1667                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1668                         unsigned long),
1669                 void *reply_param)
1670 {
1671         int rc;
1672         unsigned long flags;
1673         struct qeth_reply *reply = NULL;
1674         unsigned long timeout, event_timeout;
1675         struct qeth_ipa_cmd *cmd;
1676
1677         QETH_CARD_TEXT(card, 2, "sendctl");
1678
1679         if (card->read_or_write_problem) {
1680                 qeth_release_buffer(iob->channel, iob);
1681                 return -EIO;
1682         }
1683         reply = qeth_alloc_reply(card);
1684         if (!reply) {
1685                 return -ENOMEM;
1686         }
1687         reply->callback = reply_cb;
1688         reply->param = reply_param;
1689         if (card->state == CARD_STATE_DOWN)
1690                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1691         else
1692                 reply->seqno = card->seqno.ipa++;
1693         init_waitqueue_head(&reply->wait_q);
1694         spin_lock_irqsave(&card->lock, flags);
1695         list_add_tail(&reply->list, &card->cmd_waiter_list);
1696         spin_unlock_irqrestore(&card->lock, flags);
1697         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1698
1699         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1700         qeth_prepare_control_data(card, len, iob);
1701
1702         if (IS_IPA(iob->data))
1703                 event_timeout = QETH_IPA_TIMEOUT;
1704         else
1705                 event_timeout = QETH_TIMEOUT;
1706         timeout = jiffies + event_timeout;
1707
1708         QETH_CARD_TEXT(card, 6, "noirqpnd");
1709         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1710         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1711                               (addr_t) iob, 0, 0);
1712         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1713         if (rc) {
1714                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1715                         "ccw_device_start rc = %i\n",
1716                         dev_name(&card->write.ccwdev->dev), rc);
1717                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1718                 spin_lock_irqsave(&card->lock, flags);
1719                 list_del_init(&reply->list);
1720                 qeth_put_reply(reply);
1721                 spin_unlock_irqrestore(&card->lock, flags);
1722                 qeth_release_buffer(iob->channel, iob);
1723                 atomic_set(&card->write.irq_pending, 0);
1724                 wake_up(&card->wait_q);
1725                 return rc;
1726         }
1727
1728         /* we have only one long running ipassist, since we can ensure
1729            process context of this command we can sleep */
1730         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1731         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1732             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1733                 if (!wait_event_timeout(reply->wait_q,
1734                     atomic_read(&reply->received), event_timeout))
1735                         goto time_err;
1736         } else {
1737                 while (!atomic_read(&reply->received)) {
1738                         if (time_after(jiffies, timeout))
1739                                 goto time_err;
1740                         cpu_relax();
1741                 };
1742         }
1743
1744         if (reply->rc == -EIO)
1745                 goto error;
1746         rc = reply->rc;
1747         qeth_put_reply(reply);
1748         return rc;
1749
1750 time_err:
1751         reply->rc = -ETIME;
1752         spin_lock_irqsave(&reply->card->lock, flags);
1753         list_del_init(&reply->list);
1754         spin_unlock_irqrestore(&reply->card->lock, flags);
1755         atomic_inc(&reply->received);
1756 error:
1757         atomic_set(&card->write.irq_pending, 0);
1758         qeth_release_buffer(iob->channel, iob);
1759         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
1760         rc = reply->rc;
1761         qeth_put_reply(reply);
1762         return rc;
1763 }
1764 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1765
1766 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1767                 unsigned long data)
1768 {
1769         struct qeth_cmd_buffer *iob;
1770
1771         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1772
1773         iob = (struct qeth_cmd_buffer *) data;
1774         memcpy(&card->token.cm_filter_r,
1775                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1776                QETH_MPC_TOKEN_LENGTH);
1777         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1778         return 0;
1779 }
1780
1781 static int qeth_cm_enable(struct qeth_card *card)
1782 {
1783         int rc;
1784         struct qeth_cmd_buffer *iob;
1785
1786         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1787
1788         iob = qeth_wait_for_buffer(&card->write);
1789         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1790         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1791                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1792         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1793                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1794
1795         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1796                                     qeth_cm_enable_cb, NULL);
1797         return rc;
1798 }
1799
1800 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1801                 unsigned long data)
1802 {
1803
1804         struct qeth_cmd_buffer *iob;
1805
1806         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1807
1808         iob = (struct qeth_cmd_buffer *) data;
1809         memcpy(&card->token.cm_connection_r,
1810                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1811                QETH_MPC_TOKEN_LENGTH);
1812         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1813         return 0;
1814 }
1815
1816 static int qeth_cm_setup(struct qeth_card *card)
1817 {
1818         int rc;
1819         struct qeth_cmd_buffer *iob;
1820
1821         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1822
1823         iob = qeth_wait_for_buffer(&card->write);
1824         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1825         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1826                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1827         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1828                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1829         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1830                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1831         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1832                                     qeth_cm_setup_cb, NULL);
1833         return rc;
1834
1835 }
1836
1837 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1838 {
1839         switch (card->info.type) {
1840         case QETH_CARD_TYPE_UNKNOWN:
1841                 return 1500;
1842         case QETH_CARD_TYPE_IQD:
1843                 return card->info.max_mtu;
1844         case QETH_CARD_TYPE_OSD:
1845                 switch (card->info.link_type) {
1846                 case QETH_LINK_TYPE_HSTR:
1847                 case QETH_LINK_TYPE_LANE_TR:
1848                         return 2000;
1849                 default:
1850                         return 1492;
1851                 }
1852         case QETH_CARD_TYPE_OSM:
1853         case QETH_CARD_TYPE_OSX:
1854                 return 1492;
1855         default:
1856                 return 1500;
1857         }
1858 }
1859
1860 static inline int qeth_get_mtu_outof_framesize(int framesize)
1861 {
1862         switch (framesize) {
1863         case 0x4000:
1864                 return 8192;
1865         case 0x6000:
1866                 return 16384;
1867         case 0xa000:
1868                 return 32768;
1869         case 0xffff:
1870                 return 57344;
1871         default:
1872                 return 0;
1873         }
1874 }
1875
1876 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1877 {
1878         switch (card->info.type) {
1879         case QETH_CARD_TYPE_OSD:
1880         case QETH_CARD_TYPE_OSM:
1881         case QETH_CARD_TYPE_OSX:
1882         case QETH_CARD_TYPE_IQD:
1883                 return ((mtu >= 576) &&
1884                         (mtu <= card->info.max_mtu));
1885         case QETH_CARD_TYPE_OSN:
1886         case QETH_CARD_TYPE_UNKNOWN:
1887         default:
1888                 return 1;
1889         }
1890 }
1891
1892 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1893                 unsigned long data)
1894 {
1895
1896         __u16 mtu, framesize;
1897         __u16 len;
1898         __u8 link_type;
1899         struct qeth_cmd_buffer *iob;
1900
1901         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1902
1903         iob = (struct qeth_cmd_buffer *) data;
1904         memcpy(&card->token.ulp_filter_r,
1905                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1906                QETH_MPC_TOKEN_LENGTH);
1907         if (card->info.type == QETH_CARD_TYPE_IQD) {
1908                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1909                 mtu = qeth_get_mtu_outof_framesize(framesize);
1910                 if (!mtu) {
1911                         iob->rc = -EINVAL;
1912                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1913                         return 0;
1914                 }
1915                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
1916                         /* frame size has changed */
1917                         if (card->dev &&
1918                             ((card->dev->mtu == card->info.initial_mtu) ||
1919                              (card->dev->mtu > mtu)))
1920                                 card->dev->mtu = mtu;
1921                         qeth_free_qdio_buffers(card);
1922                 }
1923                 card->info.initial_mtu = mtu;
1924                 card->info.max_mtu = mtu;
1925                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1926         } else {
1927                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1928                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
1929                         iob->data);
1930                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1931         }
1932
1933         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1934         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1935                 memcpy(&link_type,
1936                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1937                 card->info.link_type = link_type;
1938         } else
1939                 card->info.link_type = 0;
1940         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1941         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1942         return 0;
1943 }
1944
1945 static int qeth_ulp_enable(struct qeth_card *card)
1946 {
1947         int rc;
1948         char prot_type;
1949         struct qeth_cmd_buffer *iob;
1950
1951         /*FIXME: trace view callbacks*/
1952         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1953
1954         iob = qeth_wait_for_buffer(&card->write);
1955         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1956
1957         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1958                 (__u8) card->info.portno;
1959         if (card->options.layer2)
1960                 if (card->info.type == QETH_CARD_TYPE_OSN)
1961                         prot_type = QETH_PROT_OSN2;
1962                 else
1963                         prot_type = QETH_PROT_LAYER2;
1964         else
1965                 prot_type = QETH_PROT_TCPIP;
1966
1967         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1968         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1969                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1970         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1971                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1972         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1973                card->info.portname, 9);
1974         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1975                                     qeth_ulp_enable_cb, NULL);
1976         return rc;
1977
1978 }
1979
1980 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1981                 unsigned long data)
1982 {
1983         struct qeth_cmd_buffer *iob;
1984         int rc = 0;
1985
1986         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1987
1988         iob = (struct qeth_cmd_buffer *) data;
1989         memcpy(&card->token.ulp_connection_r,
1990                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1991                QETH_MPC_TOKEN_LENGTH);
1992         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1993                      3)) {
1994                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1995                 dev_err(&card->gdev->dev, "A connection could not be "
1996                         "established because of an OLM limit\n");
1997                 iob->rc = -EMLINK;
1998         }
1999         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2000         return rc;
2001 }
2002
2003 static int qeth_ulp_setup(struct qeth_card *card)
2004 {
2005         int rc;
2006         __u16 temp;
2007         struct qeth_cmd_buffer *iob;
2008         struct ccw_dev_id dev_id;
2009
2010         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2011
2012         iob = qeth_wait_for_buffer(&card->write);
2013         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2014
2015         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2016                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2017         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2018                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2019         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2020                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2021
2022         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2023         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2024         temp = (card->info.cula << 8) + card->info.unit_addr2;
2025         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2026         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2027                                     qeth_ulp_setup_cb, NULL);
2028         return rc;
2029 }
2030
2031 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2032 {
2033         int i, j;
2034
2035         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2036
2037         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2038                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2039                 return 0;
2040
2041         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2042                                   GFP_KERNEL);
2043         if (!card->qdio.in_q)
2044                 goto out_nomem;
2045         QETH_DBF_TEXT(SETUP, 2, "inq");
2046         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2047         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2048         /* give inbound qeth_qdio_buffers their qdio_buffers */
2049         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2050                 card->qdio.in_q->bufs[i].buffer =
2051                         &card->qdio.in_q->qdio_bufs[i];
2052         /* inbound buffer pool */
2053         if (qeth_alloc_buffer_pool(card))
2054                 goto out_freeinq;
2055         /* outbound */
2056         card->qdio.out_qs =
2057                 kmalloc(card->qdio.no_out_queues *
2058                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2059         if (!card->qdio.out_qs)
2060                 goto out_freepool;
2061         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2062                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2063                                                GFP_KERNEL);
2064                 if (!card->qdio.out_qs[i])
2065                         goto out_freeoutq;
2066                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2067                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2068                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2069                 card->qdio.out_qs[i]->queue_no = i;
2070                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2071                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2072                         card->qdio.out_qs[i]->bufs[j].buffer =
2073                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2074                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2075                                             skb_list);
2076                         lockdep_set_class(
2077                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2078                                 &qdio_out_skb_queue_key);
2079                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2080                 }
2081         }
2082         return 0;
2083
2084 out_freeoutq:
2085         while (i > 0)
2086                 kfree(card->qdio.out_qs[--i]);
2087         kfree(card->qdio.out_qs);
2088         card->qdio.out_qs = NULL;
2089 out_freepool:
2090         qeth_free_buffer_pool(card);
2091 out_freeinq:
2092         kfree(card->qdio.in_q);
2093         card->qdio.in_q = NULL;
2094 out_nomem:
2095         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2096         return -ENOMEM;
2097 }
2098
2099 static void qeth_create_qib_param_field(struct qeth_card *card,
2100                 char *param_field)
2101 {
2102
2103         param_field[0] = _ascebc['P'];
2104         param_field[1] = _ascebc['C'];
2105         param_field[2] = _ascebc['I'];
2106         param_field[3] = _ascebc['T'];
2107         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2108         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2109         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2110 }
2111
2112 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2113                 char *param_field)
2114 {
2115         param_field[16] = _ascebc['B'];
2116         param_field[17] = _ascebc['L'];
2117         param_field[18] = _ascebc['K'];
2118         param_field[19] = _ascebc['T'];
2119         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2120         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2121         *((unsigned int *) (&param_field[28])) =
2122                 card->info.blkt.inter_packet_jumbo;
2123 }
2124
2125 static int qeth_qdio_activate(struct qeth_card *card)
2126 {
2127         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2128         return qdio_activate(CARD_DDEV(card));
2129 }
2130
2131 static int qeth_dm_act(struct qeth_card *card)
2132 {
2133         int rc;
2134         struct qeth_cmd_buffer *iob;
2135
2136         QETH_DBF_TEXT(SETUP, 2, "dmact");
2137
2138         iob = qeth_wait_for_buffer(&card->write);
2139         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2140
2141         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2142                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2143         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2144                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2145         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2146         return rc;
2147 }
2148
2149 static int qeth_mpc_initialize(struct qeth_card *card)
2150 {
2151         int rc;
2152
2153         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2154
2155         rc = qeth_issue_next_read(card);
2156         if (rc) {
2157                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2158                 return rc;
2159         }
2160         rc = qeth_cm_enable(card);
2161         if (rc) {
2162                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2163                 goto out_qdio;
2164         }
2165         rc = qeth_cm_setup(card);
2166         if (rc) {
2167                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2168                 goto out_qdio;
2169         }
2170         rc = qeth_ulp_enable(card);
2171         if (rc) {
2172                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2173                 goto out_qdio;
2174         }
2175         rc = qeth_ulp_setup(card);
2176         if (rc) {
2177                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2178                 goto out_qdio;
2179         }
2180         rc = qeth_alloc_qdio_buffers(card);
2181         if (rc) {
2182                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2183                 goto out_qdio;
2184         }
2185         rc = qeth_qdio_establish(card);
2186         if (rc) {
2187                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2188                 qeth_free_qdio_buffers(card);
2189                 goto out_qdio;
2190         }
2191         rc = qeth_qdio_activate(card);
2192         if (rc) {
2193                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2194                 goto out_qdio;
2195         }
2196         rc = qeth_dm_act(card);
2197         if (rc) {
2198                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2199                 goto out_qdio;
2200         }
2201
2202         return 0;
2203 out_qdio:
2204         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2205         return rc;
2206 }
2207
2208 static void qeth_print_status_with_portname(struct qeth_card *card)
2209 {
2210         char dbf_text[15];
2211         int i;
2212
2213         sprintf(dbf_text, "%s", card->info.portname + 1);
2214         for (i = 0; i < 8; i++)
2215                 dbf_text[i] =
2216                         (char) _ebcasc[(__u8) dbf_text[i]];
2217         dbf_text[8] = 0;
2218         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2219                "with link type %s (portname: %s)\n",
2220                qeth_get_cardname(card),
2221                (card->info.mcl_level[0]) ? " (level: " : "",
2222                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2223                (card->info.mcl_level[0]) ? ")" : "",
2224                qeth_get_cardname_short(card),
2225                dbf_text);
2226
2227 }
2228
2229 static void qeth_print_status_no_portname(struct qeth_card *card)
2230 {
2231         if (card->info.portname[0])
2232                 dev_info(&card->gdev->dev, "Device is a%s "
2233                        "card%s%s%s\nwith link type %s "
2234                        "(no portname needed by interface).\n",
2235                        qeth_get_cardname(card),
2236                        (card->info.mcl_level[0]) ? " (level: " : "",
2237                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2238                        (card->info.mcl_level[0]) ? ")" : "",
2239                        qeth_get_cardname_short(card));
2240         else
2241                 dev_info(&card->gdev->dev, "Device is a%s "
2242                        "card%s%s%s\nwith link type %s.\n",
2243                        qeth_get_cardname(card),
2244                        (card->info.mcl_level[0]) ? " (level: " : "",
2245                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2246                        (card->info.mcl_level[0]) ? ")" : "",
2247                        qeth_get_cardname_short(card));
2248 }
2249
2250 void qeth_print_status_message(struct qeth_card *card)
2251 {
2252         switch (card->info.type) {
2253         case QETH_CARD_TYPE_OSD:
2254         case QETH_CARD_TYPE_OSM:
2255         case QETH_CARD_TYPE_OSX:
2256                 /* VM will use a non-zero first character
2257                  * to indicate a HiperSockets like reporting
2258                  * of the level OSA sets the first character to zero
2259                  * */
2260                 if (!card->info.mcl_level[0]) {
2261                         sprintf(card->info.mcl_level, "%02x%02x",
2262                                 card->info.mcl_level[2],
2263                                 card->info.mcl_level[3]);
2264
2265                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2266                         break;
2267                 }
2268                 /* fallthrough */
2269         case QETH_CARD_TYPE_IQD:
2270                 if ((card->info.guestlan) ||
2271                     (card->info.mcl_level[0] & 0x80)) {
2272                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2273                                 card->info.mcl_level[0]];
2274                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2275                                 card->info.mcl_level[1]];
2276                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2277                                 card->info.mcl_level[2]];
2278                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2279                                 card->info.mcl_level[3]];
2280                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2281                 }
2282                 break;
2283         default:
2284                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2285         }
2286         if (card->info.portname_required)
2287                 qeth_print_status_with_portname(card);
2288         else
2289                 qeth_print_status_no_portname(card);
2290 }
2291 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2292
2293 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2294 {
2295         struct qeth_buffer_pool_entry *entry;
2296
2297         QETH_CARD_TEXT(card, 5, "inwrklst");
2298
2299         list_for_each_entry(entry,
2300                             &card->qdio.init_pool.entry_list, init_list) {
2301                 qeth_put_buffer_pool_entry(card, entry);
2302         }
2303 }
2304
2305 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2306                 struct qeth_card *card)
2307 {
2308         struct list_head *plh;
2309         struct qeth_buffer_pool_entry *entry;
2310         int i, free;
2311         struct page *page;
2312
2313         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2314                 return NULL;
2315
2316         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2317                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2318                 free = 1;
2319                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2320                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2321                                 free = 0;
2322                                 break;
2323                         }
2324                 }
2325                 if (free) {
2326                         list_del_init(&entry->list);
2327                         return entry;
2328                 }
2329         }
2330
2331         /* no free buffer in pool so take first one and swap pages */
2332         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2333                         struct qeth_buffer_pool_entry, list);
2334         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2335                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2336                         page = alloc_page(GFP_ATOMIC);
2337                         if (!page) {
2338                                 return NULL;
2339                         } else {
2340                                 free_page((unsigned long)entry->elements[i]);
2341                                 entry->elements[i] = page_address(page);
2342                                 if (card->options.performance_stats)
2343                                         card->perf_stats.sg_alloc_page_rx++;
2344                         }
2345                 }
2346         }
2347         list_del_init(&entry->list);
2348         return entry;
2349 }
2350
2351 static int qeth_init_input_buffer(struct qeth_card *card,
2352                 struct qeth_qdio_buffer *buf)
2353 {
2354         struct qeth_buffer_pool_entry *pool_entry;
2355         int i;
2356
2357         pool_entry = qeth_find_free_buffer_pool_entry(card);
2358         if (!pool_entry)
2359                 return 1;
2360
2361         /*
2362          * since the buffer is accessed only from the input_tasklet
2363          * there shouldn't be a need to synchronize; also, since we use
2364          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2365          * buffers
2366          */
2367
2368         buf->pool_entry = pool_entry;
2369         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2370                 buf->buffer->element[i].length = PAGE_SIZE;
2371                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2372                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2373                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2374                 else
2375                         buf->buffer->element[i].eflags = 0;
2376                 buf->buffer->element[i].sflags = 0;
2377         }
2378         return 0;
2379 }
2380
2381 int qeth_init_qdio_queues(struct qeth_card *card)
2382 {
2383         int i, j;
2384         int rc;
2385
2386         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2387
2388         /* inbound queue */
2389         memset(card->qdio.in_q->qdio_bufs, 0,
2390                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2391         qeth_initialize_working_pool_list(card);
2392         /*give only as many buffers to hardware as we have buffer pool entries*/
2393         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2394                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2395         card->qdio.in_q->next_buf_to_init =
2396                 card->qdio.in_buf_pool.buf_count - 1;
2397         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2398                      card->qdio.in_buf_pool.buf_count - 1);
2399         if (rc) {
2400                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2401                 return rc;
2402         }
2403         /* outbound queue */
2404         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2405                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2406                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2407                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2408                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2409                                         &card->qdio.out_qs[i]->bufs[j]);
2410                 }
2411                 card->qdio.out_qs[i]->card = card;
2412                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2413                 card->qdio.out_qs[i]->do_pack = 0;
2414                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2415                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2416                 atomic_set(&card->qdio.out_qs[i]->state,
2417                            QETH_OUT_Q_UNLOCKED);
2418         }
2419         return 0;
2420 }
2421 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2422
2423 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2424 {
2425         switch (link_type) {
2426         case QETH_LINK_TYPE_HSTR:
2427                 return 2;
2428         default:
2429                 return 1;
2430         }
2431 }
2432
2433 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2434                 struct qeth_ipa_cmd *cmd, __u8 command,
2435                 enum qeth_prot_versions prot)
2436 {
2437         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2438         cmd->hdr.command = command;
2439         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2440         cmd->hdr.seqno = card->seqno.ipa;
2441         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2442         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2443         if (card->options.layer2)
2444                 cmd->hdr.prim_version_no = 2;
2445         else
2446                 cmd->hdr.prim_version_no = 1;
2447         cmd->hdr.param_count = 1;
2448         cmd->hdr.prot_version = prot;
2449         cmd->hdr.ipa_supported = 0;
2450         cmd->hdr.ipa_enabled = 0;
2451 }
2452
2453 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2454                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2455 {
2456         struct qeth_cmd_buffer *iob;
2457         struct qeth_ipa_cmd *cmd;
2458
2459         iob = qeth_wait_for_buffer(&card->write);
2460         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2461         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2462
2463         return iob;
2464 }
2465 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2466
2467 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2468                 char prot_type)
2469 {
2470         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2471         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2472         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2473                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2474 }
2475 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2476
2477 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2478                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2479                         unsigned long),
2480                 void *reply_param)
2481 {
2482         int rc;
2483         char prot_type;
2484
2485         QETH_CARD_TEXT(card, 4, "sendipa");
2486
2487         if (card->options.layer2)
2488                 if (card->info.type == QETH_CARD_TYPE_OSN)
2489                         prot_type = QETH_PROT_OSN2;
2490                 else
2491                         prot_type = QETH_PROT_LAYER2;
2492         else
2493                 prot_type = QETH_PROT_TCPIP;
2494         qeth_prepare_ipa_cmd(card, iob, prot_type);
2495         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2496                                                 iob, reply_cb, reply_param);
2497         if (rc == -ETIME) {
2498                 qeth_clear_ipacmd_list(card);
2499                 qeth_schedule_recovery(card);
2500         }
2501         return rc;
2502 }
2503 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2504
2505 int qeth_send_startlan(struct qeth_card *card)
2506 {
2507         int rc;
2508         struct qeth_cmd_buffer *iob;
2509
2510         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2511
2512         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2513         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2514         return rc;
2515 }
2516 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2517
2518 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2519                 struct qeth_reply *reply, unsigned long data)
2520 {
2521         struct qeth_ipa_cmd *cmd;
2522
2523         QETH_CARD_TEXT(card, 4, "defadpcb");
2524
2525         cmd = (struct qeth_ipa_cmd *) data;
2526         if (cmd->hdr.return_code == 0)
2527                 cmd->hdr.return_code =
2528                         cmd->data.setadapterparms.hdr.return_code;
2529         return 0;
2530 }
2531 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2532
2533 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2534                 struct qeth_reply *reply, unsigned long data)
2535 {
2536         struct qeth_ipa_cmd *cmd;
2537
2538         QETH_CARD_TEXT(card, 3, "quyadpcb");
2539
2540         cmd = (struct qeth_ipa_cmd *) data;
2541         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2542                 card->info.link_type =
2543                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2544                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2545         }
2546         card->options.adp.supported_funcs =
2547                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2548         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2549 }
2550
2551 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2552                 __u32 command, __u32 cmdlen)
2553 {
2554         struct qeth_cmd_buffer *iob;
2555         struct qeth_ipa_cmd *cmd;
2556
2557         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2558                                      QETH_PROT_IPV4);
2559         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2560         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2561         cmd->data.setadapterparms.hdr.command_code = command;
2562         cmd->data.setadapterparms.hdr.used_total = 1;
2563         cmd->data.setadapterparms.hdr.seq_no = 1;
2564
2565         return iob;
2566 }
2567 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2568
2569 int qeth_query_setadapterparms(struct qeth_card *card)
2570 {
2571         int rc;
2572         struct qeth_cmd_buffer *iob;
2573
2574         QETH_CARD_TEXT(card, 3, "queryadp");
2575         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2576                                    sizeof(struct qeth_ipacmd_setadpparms));
2577         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2578         return rc;
2579 }
2580 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2581
2582 static int qeth_query_ipassists_cb(struct qeth_card *card,
2583                 struct qeth_reply *reply, unsigned long data)
2584 {
2585         struct qeth_ipa_cmd *cmd;
2586
2587         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2588
2589         cmd = (struct qeth_ipa_cmd *) data;
2590         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2591                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2592                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2593         } else {
2594                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2595                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2596         }
2597         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2598         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
2599         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
2600         return 0;
2601 }
2602
2603 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2604 {
2605         int rc;
2606         struct qeth_cmd_buffer *iob;
2607
2608         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2609         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2610         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2611         return rc;
2612 }
2613 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2614
2615 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2616                 struct qeth_reply *reply, unsigned long data)
2617 {
2618         struct qeth_ipa_cmd *cmd;
2619         __u16 rc;
2620
2621         cmd = (struct qeth_ipa_cmd *)data;
2622         rc = cmd->hdr.return_code;
2623         if (rc)
2624                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2625         else
2626                 card->info.diagass_support = cmd->data.diagass.ext;
2627         return 0;
2628 }
2629
2630 static int qeth_query_setdiagass(struct qeth_card *card)
2631 {
2632         struct qeth_cmd_buffer *iob;
2633         struct qeth_ipa_cmd    *cmd;
2634
2635         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2636         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2637         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2638         cmd->data.diagass.subcmd_len = 16;
2639         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2640         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2641 }
2642
2643 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2644 {
2645         unsigned long info = get_zeroed_page(GFP_KERNEL);
2646         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2647         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2648         struct ccw_dev_id ccwid;
2649         int level, rc;
2650
2651         tid->chpid = card->info.chpid;
2652         ccw_device_get_id(CARD_RDEV(card), &ccwid);
2653         tid->ssid = ccwid.ssid;
2654         tid->devno = ccwid.devno;
2655         if (!info)
2656                 return;
2657
2658         rc = stsi(NULL, 0, 0, 0);
2659         if (rc == -ENOSYS)
2660                 level = rc;
2661         else
2662                 level = (((unsigned int) rc) >> 28);
2663
2664         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
2665                 tid->lparnr = info222->lpar_number;
2666
2667         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
2668                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2669                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2670         }
2671         free_page(info);
2672         return;
2673 }
2674
2675 static int qeth_hw_trap_cb(struct qeth_card *card,
2676                 struct qeth_reply *reply, unsigned long data)
2677 {
2678         struct qeth_ipa_cmd *cmd;
2679         __u16 rc;
2680
2681         cmd = (struct qeth_ipa_cmd *)data;
2682         rc = cmd->hdr.return_code;
2683         if (rc)
2684                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2685         return 0;
2686 }
2687
2688 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2689 {
2690         struct qeth_cmd_buffer *iob;
2691         struct qeth_ipa_cmd *cmd;
2692
2693         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
2694         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2695         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2696         cmd->data.diagass.subcmd_len = 80;
2697         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
2698         cmd->data.diagass.type = 1;
2699         cmd->data.diagass.action = action;
2700         switch (action) {
2701         case QETH_DIAGS_TRAP_ARM:
2702                 cmd->data.diagass.options = 0x0003;
2703                 cmd->data.diagass.ext = 0x00010000 +
2704                         sizeof(struct qeth_trap_id);
2705                 qeth_get_trap_id(card,
2706                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
2707                 break;
2708         case QETH_DIAGS_TRAP_DISARM:
2709                 cmd->data.diagass.options = 0x0001;
2710                 break;
2711         case QETH_DIAGS_TRAP_CAPTURE:
2712                 break;
2713         }
2714         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
2715 }
2716 EXPORT_SYMBOL_GPL(qeth_hw_trap);
2717
2718 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2719                 unsigned int qdio_error, const char *dbftext)
2720 {
2721         if (qdio_error) {
2722                 QETH_CARD_TEXT(card, 2, dbftext);
2723                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2724                                buf->element[15].sflags);
2725                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2726                                buf->element[14].sflags);
2727                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2728                 if ((buf->element[15].sflags) == 0x12) {
2729                         card->stats.rx_dropped++;
2730                         return 0;
2731                 } else
2732                         return 1;
2733         }
2734         return 0;
2735 }
2736 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2737
2738 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2739 {
2740         struct qeth_qdio_q *queue = card->qdio.in_q;
2741         int count;
2742         int i;
2743         int rc;
2744         int newcount = 0;
2745
2746         count = (index < queue->next_buf_to_init)?
2747                 card->qdio.in_buf_pool.buf_count -
2748                 (queue->next_buf_to_init - index) :
2749                 card->qdio.in_buf_pool.buf_count -
2750                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2751         /* only requeue at a certain threshold to avoid SIGAs */
2752         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2753                 for (i = queue->next_buf_to_init;
2754                      i < queue->next_buf_to_init + count; ++i) {
2755                         if (qeth_init_input_buffer(card,
2756                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2757                                 break;
2758                         } else {
2759                                 newcount++;
2760                         }
2761                 }
2762
2763                 if (newcount < count) {
2764                         /* we are in memory shortage so we switch back to
2765                            traditional skb allocation and drop packages */
2766                         atomic_set(&card->force_alloc_skb, 3);
2767                         count = newcount;
2768                 } else {
2769                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2770                 }
2771
2772                 /*
2773                  * according to old code it should be avoided to requeue all
2774                  * 128 buffers in order to benefit from PCI avoidance.
2775                  * this function keeps at least one buffer (the buffer at
2776                  * 'index') un-requeued -> this buffer is the first buffer that
2777                  * will be requeued the next time
2778                  */
2779                 if (card->options.performance_stats) {
2780                         card->perf_stats.inbound_do_qdio_cnt++;
2781                         card->perf_stats.inbound_do_qdio_start_time =
2782                                 qeth_get_micros();
2783                 }
2784                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2785                              queue->next_buf_to_init, count);
2786                 if (card->options.performance_stats)
2787                         card->perf_stats.inbound_do_qdio_time +=
2788                                 qeth_get_micros() -
2789                                 card->perf_stats.inbound_do_qdio_start_time;
2790                 if (rc) {
2791                         dev_warn(&card->gdev->dev,
2792                                 "QDIO reported an error, rc=%i\n", rc);
2793                         QETH_CARD_TEXT(card, 2, "qinberr");
2794                 }
2795                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2796                                           QDIO_MAX_BUFFERS_PER_Q;
2797         }
2798 }
2799 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2800
2801 static int qeth_handle_send_error(struct qeth_card *card,
2802                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2803 {
2804         int sbalf15 = buffer->buffer->element[15].sflags;
2805
2806         QETH_CARD_TEXT(card, 6, "hdsnderr");
2807         if (card->info.type == QETH_CARD_TYPE_IQD) {
2808                 if (sbalf15 == 0) {
2809                         qdio_err = 0;
2810                 } else {
2811                         qdio_err = 1;
2812                 }
2813         }
2814         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2815
2816         if (!qdio_err)
2817                 return QETH_SEND_ERROR_NONE;
2818
2819         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2820                 return QETH_SEND_ERROR_RETRY;
2821
2822         QETH_CARD_TEXT(card, 1, "lnkfail");
2823         QETH_CARD_TEXT_(card, 1, "%04x %02x",
2824                        (u16)qdio_err, (u8)sbalf15);
2825         return QETH_SEND_ERROR_LINK_FAILURE;
2826 }
2827
2828 /*
2829  * Switched to packing state if the number of used buffers on a queue
2830  * reaches a certain limit.
2831  */
2832 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2833 {
2834         if (!queue->do_pack) {
2835                 if (atomic_read(&queue->used_buffers)
2836                     >= QETH_HIGH_WATERMARK_PACK){
2837                         /* switch non-PACKING -> PACKING */
2838                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
2839                         if (queue->card->options.performance_stats)
2840                                 queue->card->perf_stats.sc_dp_p++;
2841                         queue->do_pack = 1;
2842                 }
2843         }
2844 }
2845
2846 /*
2847  * Switches from packing to non-packing mode. If there is a packing
2848  * buffer on the queue this buffer will be prepared to be flushed.
2849  * In that case 1 is returned to inform the caller. If no buffer
2850  * has to be flushed, zero is returned.
2851  */
2852 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2853 {
2854         struct qeth_qdio_out_buffer *buffer;
2855         int flush_count = 0;
2856
2857         if (queue->do_pack) {
2858                 if (atomic_read(&queue->used_buffers)
2859                     <= QETH_LOW_WATERMARK_PACK) {
2860                         /* switch PACKING -> non-PACKING */
2861                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
2862                         if (queue->card->options.performance_stats)
2863                                 queue->card->perf_stats.sc_p_dp++;
2864                         queue->do_pack = 0;
2865                         /* flush packing buffers */
2866                         buffer = &queue->bufs[queue->next_buf_to_fill];
2867                         if ((atomic_read(&buffer->state) ==
2868                                                 QETH_QDIO_BUF_EMPTY) &&
2869                             (buffer->next_element_to_fill > 0)) {
2870                                 atomic_set(&buffer->state,
2871                                                 QETH_QDIO_BUF_PRIMED);
2872                                 flush_count++;
2873                                 queue->next_buf_to_fill =
2874                                         (queue->next_buf_to_fill + 1) %
2875                                         QDIO_MAX_BUFFERS_PER_Q;
2876                         }
2877                 }
2878         }
2879         return flush_count;
2880 }
2881
2882 /*
2883  * Called to flush a packing buffer if no more pci flags are on the queue.
2884  * Checks if there is a packing buffer and prepares it to be flushed.
2885  * In that case returns 1, otherwise zero.
2886  */
2887 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2888 {
2889         struct qeth_qdio_out_buffer *buffer;
2890
2891         buffer = &queue->bufs[queue->next_buf_to_fill];
2892         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2893            (buffer->next_element_to_fill > 0)) {
2894                 /* it's a packing buffer */
2895                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2896                 queue->next_buf_to_fill =
2897                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2898                 return 1;
2899         }
2900         return 0;
2901 }
2902
2903 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2904                                int count)
2905 {
2906         struct qeth_qdio_out_buffer *buf;
2907         int rc;
2908         int i;
2909         unsigned int qdio_flags;
2910
2911         for (i = index; i < index + count; ++i) {
2912                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2913                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
2914                                 SBAL_EFLAGS_LAST_ENTRY;
2915
2916                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2917                         continue;
2918
2919                 if (!queue->do_pack) {
2920                         if ((atomic_read(&queue->used_buffers) >=
2921                                 (QETH_HIGH_WATERMARK_PACK -
2922                                  QETH_WATERMARK_PACK_FUZZ)) &&
2923                             !atomic_read(&queue->set_pci_flags_count)) {
2924                                 /* it's likely that we'll go to packing
2925                                  * mode soon */
2926                                 atomic_inc(&queue->set_pci_flags_count);
2927                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
2928                         }
2929                 } else {
2930                         if (!atomic_read(&queue->set_pci_flags_count)) {
2931                                 /*
2932                                  * there's no outstanding PCI any more, so we
2933                                  * have to request a PCI to be sure the the PCI
2934                                  * will wake at some time in the future then we
2935                                  * can flush packed buffers that might still be
2936                                  * hanging around, which can happen if no
2937                                  * further send was requested by the stack
2938                                  */
2939                                 atomic_inc(&queue->set_pci_flags_count);
2940                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
2941                         }
2942                 }
2943         }
2944
2945         queue->card->dev->trans_start = jiffies;
2946         if (queue->card->options.performance_stats) {
2947                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2948                 queue->card->perf_stats.outbound_do_qdio_start_time =
2949                         qeth_get_micros();
2950         }
2951         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2952         if (atomic_read(&queue->set_pci_flags_count))
2953                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2954         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2955                      queue->queue_no, index, count);
2956         if (queue->card->options.performance_stats)
2957                 queue->card->perf_stats.outbound_do_qdio_time +=
2958                         qeth_get_micros() -
2959                         queue->card->perf_stats.outbound_do_qdio_start_time;
2960         atomic_add(count, &queue->used_buffers);
2961         if (rc) {
2962                 queue->card->stats.tx_errors += count;
2963                 /* ignore temporary SIGA errors without busy condition */
2964                 if (rc == QDIO_ERROR_SIGA_TARGET)
2965                         return;
2966                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2967                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2968
2969                 /* this must not happen under normal circumstances. if it
2970                  * happens something is really wrong -> recover */
2971                 qeth_schedule_recovery(queue->card);
2972                 return;
2973         }
2974         if (queue->card->options.performance_stats)
2975                 queue->card->perf_stats.bufs_sent += count;
2976 }
2977
2978 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2979 {
2980         int index;
2981         int flush_cnt = 0;
2982         int q_was_packing = 0;
2983
2984         /*
2985          * check if weed have to switch to non-packing mode or if
2986          * we have to get a pci flag out on the queue
2987          */
2988         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2989             !atomic_read(&queue->set_pci_flags_count)) {
2990                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2991                                 QETH_OUT_Q_UNLOCKED) {
2992                         /*
2993                          * If we get in here, there was no action in
2994                          * do_send_packet. So, we check if there is a
2995                          * packing buffer to be flushed here.
2996                          */
2997                         netif_stop_queue(queue->card->dev);
2998                         index = queue->next_buf_to_fill;
2999                         q_was_packing = queue->do_pack;
3000                         /* queue->do_pack may change */
3001                         barrier();
3002                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3003                         if (!flush_cnt &&
3004                             !atomic_read(&queue->set_pci_flags_count))
3005                                 flush_cnt +=
3006                                         qeth_flush_buffers_on_no_pci(queue);
3007                         if (queue->card->options.performance_stats &&
3008                             q_was_packing)
3009                                 queue->card->perf_stats.bufs_sent_pack +=
3010                                         flush_cnt;
3011                         if (flush_cnt)
3012                                 qeth_flush_buffers(queue, index, flush_cnt);
3013                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3014                 }
3015         }
3016 }
3017
3018 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3019                 unsigned long card_ptr)
3020 {
3021         struct qeth_card *card = (struct qeth_card *)card_ptr;
3022
3023         if (card->dev && (card->dev->flags & IFF_UP))
3024                 napi_schedule(&card->napi);
3025 }
3026 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3027
3028 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3029                 unsigned int queue, int first_element, int count,
3030                 unsigned long card_ptr)
3031 {
3032         struct qeth_card *card = (struct qeth_card *)card_ptr;
3033
3034         if (qdio_err)
3035                 qeth_schedule_recovery(card);
3036 }
3037 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3038
3039 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3040                 unsigned int qdio_error, int __queue, int first_element,
3041                 int count, unsigned long card_ptr)
3042 {
3043         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3044         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3045         struct qeth_qdio_out_buffer *buffer;
3046         int i;
3047
3048         QETH_CARD_TEXT(card, 6, "qdouhdl");
3049         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3050                 QETH_CARD_TEXT(card, 2, "achkcond");
3051                 netif_stop_queue(card->dev);
3052                 qeth_schedule_recovery(card);
3053                 return;
3054         }
3055         if (card->options.performance_stats) {
3056                 card->perf_stats.outbound_handler_cnt++;
3057                 card->perf_stats.outbound_handler_start_time =
3058                         qeth_get_micros();
3059         }
3060         for (i = first_element; i < (first_element + count); ++i) {
3061                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
3062                 qeth_handle_send_error(card, buffer, qdio_error);
3063                 qeth_clear_output_buffer(queue, buffer);
3064         }
3065         atomic_sub(count, &queue->used_buffers);
3066         /* check if we need to do something on this outbound queue */
3067         if (card->info.type != QETH_CARD_TYPE_IQD)
3068                 qeth_check_outbound_queue(queue);
3069
3070         netif_wake_queue(queue->card->dev);
3071         if (card->options.performance_stats)
3072                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3073                         card->perf_stats.outbound_handler_start_time;
3074 }
3075 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3076
3077 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3078                         int ipv, int cast_type)
3079 {
3080         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3081                      card->info.type == QETH_CARD_TYPE_OSX))
3082                 return card->qdio.default_out_queue;
3083         switch (card->qdio.no_out_queues) {
3084         case 4:
3085                 if (cast_type && card->info.is_multicast_different)
3086                         return card->info.is_multicast_different &
3087                                 (card->qdio.no_out_queues - 1);
3088                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3089                         const u8 tos = ip_hdr(skb)->tos;
3090
3091                         if (card->qdio.do_prio_queueing ==
3092                                 QETH_PRIO_Q_ING_TOS) {
3093                                 if (tos & IP_TOS_NOTIMPORTANT)
3094                                         return 3;
3095                                 if (tos & IP_TOS_HIGHRELIABILITY)
3096                                         return 2;
3097                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3098                                         return 1;
3099                                 if (tos & IP_TOS_LOWDELAY)
3100                                         return 0;
3101                         }
3102                         if (card->qdio.do_prio_queueing ==
3103                                 QETH_PRIO_Q_ING_PREC)
3104                                 return 3 - (tos >> 6);
3105                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3106                         /* TODO: IPv6!!! */
3107                 }
3108                 return card->qdio.default_out_queue;
3109         case 1: /* fallthrough for single-out-queue 1920-device */
3110         default:
3111                 return card->qdio.default_out_queue;
3112         }
3113 }
3114 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3115
3116 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3117                      struct sk_buff *skb, int elems)
3118 {
3119         int dlen = skb->len - skb->data_len;
3120         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3121                 PFN_DOWN((unsigned long)skb->data);
3122
3123         elements_needed += skb_shinfo(skb)->nr_frags;
3124         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3125                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3126                         "(Number=%d / Length=%d). Discarded.\n",
3127                         (elements_needed+elems), skb->len);
3128                 return 0;
3129         }
3130         return elements_needed;
3131 }
3132 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3133
3134 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3135 {
3136         int hroom, inpage, rest;
3137
3138         if (((unsigned long)skb->data & PAGE_MASK) !=
3139             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3140                 hroom = skb_headroom(skb);
3141                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3142                 rest = len - inpage;
3143                 if (rest > hroom)
3144                         return 1;
3145                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3146                 skb->data -= rest;
3147                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3148         }
3149         return 0;
3150 }
3151 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3152
3153 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3154         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3155         int offset)
3156 {
3157         int length = skb->len - skb->data_len;
3158         int length_here;
3159         int element;
3160         char *data;
3161         int first_lap, cnt;
3162         struct skb_frag_struct *frag;
3163
3164         element = *next_element_to_fill;
3165         data = skb->data;
3166         first_lap = (is_tso == 0 ? 1 : 0);
3167
3168         if (offset >= 0) {
3169                 data = skb->data + offset;
3170                 length -= offset;
3171                 first_lap = 0;
3172         }
3173
3174         while (length > 0) {
3175                 /* length_here is the remaining amount of data in this page */
3176                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3177                 if (length < length_here)
3178                         length_here = length;
3179
3180                 buffer->element[element].addr = data;
3181                 buffer->element[element].length = length_here;
3182                 length -= length_here;
3183                 if (!length) {
3184                         if (first_lap)
3185                                 if (skb_shinfo(skb)->nr_frags)
3186                                         buffer->element[element].eflags =
3187                                                 SBAL_EFLAGS_FIRST_FRAG;
3188                                 else
3189                                         buffer->element[element].eflags = 0;
3190                         else
3191                                 buffer->element[element].eflags =
3192                                     SBAL_EFLAGS_MIDDLE_FRAG;
3193                 } else {
3194                         if (first_lap)
3195                                 buffer->element[element].eflags =
3196                                     SBAL_EFLAGS_FIRST_FRAG;
3197                         else
3198                                 buffer->element[element].eflags =
3199                                     SBAL_EFLAGS_MIDDLE_FRAG;
3200                 }
3201                 data += length_here;
3202                 element++;
3203                 first_lap = 0;
3204         }
3205
3206         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3207                 frag = &skb_shinfo(skb)->frags[cnt];
3208                 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3209                         + frag->page_offset;
3210                 buffer->element[element].length = frag->size;
3211                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3212                 element++;
3213         }
3214
3215         if (buffer->element[element - 1].eflags)
3216                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3217         *next_element_to_fill = element;
3218 }
3219
3220 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3221                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3222                 struct qeth_hdr *hdr, int offset, int hd_len)
3223 {
3224         struct qdio_buffer *buffer;
3225         int flush_cnt = 0, hdr_len, large_send = 0;
3226
3227         buffer = buf->buffer;
3228         atomic_inc(&skb->users);
3229         skb_queue_tail(&buf->skb_list, skb);
3230
3231         /*check first on TSO ....*/
3232         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3233                 int element = buf->next_element_to_fill;
3234
3235                 hdr_len = sizeof(struct qeth_hdr_tso) +
3236                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3237                 /*fill first buffer entry only with header information */
3238                 buffer->element[element].addr = skb->data;
3239                 buffer->element[element].length = hdr_len;
3240                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3241                 buf->next_element_to_fill++;
3242                 skb->data += hdr_len;
3243                 skb->len  -= hdr_len;
3244                 large_send = 1;
3245         }
3246
3247         if (offset >= 0) {
3248                 int element = buf->next_element_to_fill;
3249                 buffer->element[element].addr = hdr;
3250                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3251                                                         hd_len;
3252                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3253                 buf->is_header[element] = 1;
3254                 buf->next_element_to_fill++;
3255         }
3256
3257         __qeth_fill_buffer(skb, buffer, large_send,
3258                 (int *)&buf->next_element_to_fill, offset);
3259
3260         if (!queue->do_pack) {
3261                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3262                 /* set state to PRIMED -> will be flushed */
3263                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3264                 flush_cnt = 1;
3265         } else {
3266                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3267                 if (queue->card->options.performance_stats)
3268                         queue->card->perf_stats.skbs_sent_pack++;
3269                 if (buf->next_element_to_fill >=
3270                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3271                         /*
3272                          * packed buffer if full -> set state PRIMED
3273                          * -> will be flushed
3274                          */
3275                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3276                         flush_cnt = 1;
3277                 }
3278         }
3279         return flush_cnt;
3280 }
3281
3282 int qeth_do_send_packet_fast(struct qeth_card *card,
3283                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3284                 struct qeth_hdr *hdr, int elements_needed,
3285                 int offset, int hd_len)
3286 {
3287         struct qeth_qdio_out_buffer *buffer;
3288         int index;
3289
3290         /* spin until we get the queue ... */
3291         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3292                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3293         /* ... now we've got the queue */
3294         index = queue->next_buf_to_fill;
3295         buffer = &queue->bufs[queue->next_buf_to_fill];
3296         /*
3297          * check if buffer is empty to make sure that we do not 'overtake'
3298          * ourselves and try to fill a buffer that is already primed
3299          */
3300         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3301                 goto out;
3302         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3303                                           QDIO_MAX_BUFFERS_PER_Q;
3304         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3305         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3306         qeth_flush_buffers(queue, index, 1);
3307         return 0;
3308 out:
3309         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3310         return -EBUSY;
3311 }
3312 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3313
3314 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3315                 struct sk_buff *skb, struct qeth_hdr *hdr,
3316                 int elements_needed)
3317 {
3318         struct qeth_qdio_out_buffer *buffer;
3319         int start_index;
3320         int flush_count = 0;
3321         int do_pack = 0;
3322         int tmp;
3323         int rc = 0;
3324
3325         /* spin until we get the queue ... */
3326         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3327                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3328         start_index = queue->next_buf_to_fill;
3329         buffer = &queue->bufs[queue->next_buf_to_fill];
3330         /*
3331          * check if buffer is empty to make sure that we do not 'overtake'
3332          * ourselves and try to fill a buffer that is already primed
3333          */
3334         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3335                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3336                 return -EBUSY;
3337         }
3338         /* check if we need to switch packing state of this queue */
3339         qeth_switch_to_packing_if_needed(queue);
3340         if (queue->do_pack) {
3341                 do_pack = 1;
3342                 /* does packet fit in current buffer? */
3343                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3344                     buffer->next_element_to_fill) < elements_needed) {
3345                         /* ... no -> set state PRIMED */
3346                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3347                         flush_count++;
3348                         queue->next_buf_to_fill =
3349                                 (queue->next_buf_to_fill + 1) %
3350                                 QDIO_MAX_BUFFERS_PER_Q;
3351                         buffer = &queue->bufs[queue->next_buf_to_fill];
3352                         /* we did a step forward, so check buffer state
3353                          * again */
3354                         if (atomic_read(&buffer->state) !=
3355                             QETH_QDIO_BUF_EMPTY) {
3356                                 qeth_flush_buffers(queue, start_index,
3357                                                            flush_count);
3358                                 atomic_set(&queue->state,
3359                                                 QETH_OUT_Q_UNLOCKED);
3360                                 return -EBUSY;
3361                         }
3362                 }
3363         }
3364         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3365         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3366                                   QDIO_MAX_BUFFERS_PER_Q;
3367         flush_count += tmp;
3368         if (flush_count)
3369                 qeth_flush_buffers(queue, start_index, flush_count);
3370         else if (!atomic_read(&queue->set_pci_flags_count))
3371                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3372         /*
3373          * queue->state will go from LOCKED -> UNLOCKED or from
3374          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3375          * (switch packing state or flush buffer to get another pci flag out).
3376          * In that case we will enter this loop
3377          */
3378         while (atomic_dec_return(&queue->state)) {
3379                 flush_count = 0;
3380                 start_index = queue->next_buf_to_fill;
3381                 /* check if we can go back to non-packing state */
3382                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3383                 /*
3384                  * check if we need to flush a packing buffer to get a pci
3385                  * flag out on the queue
3386                  */
3387                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3388                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3389                 if (flush_count)
3390                         qeth_flush_buffers(queue, start_index, flush_count);
3391         }
3392         /* at this point the queue is UNLOCKED again */
3393         if (queue->card->options.performance_stats && do_pack)
3394                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3395
3396         return rc;
3397 }
3398 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3399
3400 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3401                 struct qeth_reply *reply, unsigned long data)
3402 {
3403         struct qeth_ipa_cmd *cmd;
3404         struct qeth_ipacmd_setadpparms *setparms;
3405
3406         QETH_CARD_TEXT(card, 4, "prmadpcb");
3407
3408         cmd = (struct qeth_ipa_cmd *) data;
3409         setparms = &(cmd->data.setadapterparms);
3410
3411         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3412         if (cmd->hdr.return_code) {
3413                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3414                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3415         }
3416         card->info.promisc_mode = setparms->data.mode;
3417         return 0;
3418 }
3419
3420 void qeth_setadp_promisc_mode(struct qeth_card *card)
3421 {
3422         enum qeth_ipa_promisc_modes mode;
3423         struct net_device *dev = card->dev;
3424         struct qeth_cmd_buffer *iob;
3425         struct qeth_ipa_cmd *cmd;
3426
3427         QETH_CARD_TEXT(card, 4, "setprom");
3428
3429         if (((dev->flags & IFF_PROMISC) &&
3430              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3431             (!(dev->flags & IFF_PROMISC) &&
3432              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3433                 return;
3434         mode = SET_PROMISC_MODE_OFF;
3435         if (dev->flags & IFF_PROMISC)
3436                 mode = SET_PROMISC_MODE_ON;
3437         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3438
3439         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3440                         sizeof(struct qeth_ipacmd_setadpparms));
3441         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3442         cmd->data.setadapterparms.data.mode = mode;
3443         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3444 }
3445 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3446
3447 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3448 {
3449         struct qeth_card *card;
3450         char dbf_text[15];
3451
3452         card = dev->ml_priv;
3453
3454         QETH_CARD_TEXT(card, 4, "chgmtu");
3455         sprintf(dbf_text, "%8x", new_mtu);
3456         QETH_CARD_TEXT(card, 4, dbf_text);
3457
3458         if (new_mtu < 64)
3459                 return -EINVAL;
3460         if (new_mtu > 65535)
3461                 return -EINVAL;
3462         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3463             (!qeth_mtu_is_valid(card, new_mtu)))
3464                 return -EINVAL;
3465         dev->mtu = new_mtu;
3466         return 0;
3467 }
3468 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3469
3470 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3471 {
3472         struct qeth_card *card;
3473
3474         card = dev->ml_priv;
3475
3476         QETH_CARD_TEXT(card, 5, "getstat");
3477
3478         return &card->stats;
3479 }
3480 EXPORT_SYMBOL_GPL(qeth_get_stats);
3481
3482 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3483                 struct qeth_reply *reply, unsigned long data)
3484 {
3485         struct qeth_ipa_cmd *cmd;
3486
3487         QETH_CARD_TEXT(card, 4, "chgmaccb");
3488
3489         cmd = (struct qeth_ipa_cmd *) data;
3490         if (!card->options.layer2 ||
3491             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3492                 memcpy(card->dev->dev_addr,
3493                        &cmd->data.setadapterparms.data.change_addr.addr,
3494                        OSA_ADDR_LEN);
3495                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3496         }
3497         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3498         return 0;
3499 }
3500
3501 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3502 {
3503         int rc;
3504         struct qeth_cmd_buffer *iob;
3505         struct qeth_ipa_cmd *cmd;
3506
3507         QETH_CARD_TEXT(card, 4, "chgmac");
3508
3509         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3510                                    sizeof(struct qeth_ipacmd_setadpparms));
3511         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3512         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3513         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3514         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3515                card->dev->dev_addr, OSA_ADDR_LEN);
3516         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3517                                NULL);
3518         return rc;
3519 }
3520 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3521
3522 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3523                 struct qeth_reply *reply, unsigned long data)
3524 {
3525         struct qeth_ipa_cmd *cmd;
3526         struct qeth_set_access_ctrl *access_ctrl_req;
3527
3528         QETH_CARD_TEXT(card, 4, "setaccb");
3529
3530         cmd = (struct qeth_ipa_cmd *) data;
3531         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3532         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3533         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3534         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3535                 cmd->data.setadapterparms.hdr.return_code);
3536         switch (cmd->data.setadapterparms.hdr.return_code) {
3537         case SET_ACCESS_CTRL_RC_SUCCESS:
3538         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3539         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3540         {
3541                 card->options.isolation = access_ctrl_req->subcmd_code;
3542                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3543                         dev_info(&card->gdev->dev,
3544                             "QDIO data connection isolation is deactivated\n");
3545                 } else {
3546                         dev_info(&card->gdev->dev,
3547                             "QDIO data connection isolation is activated\n");
3548                 }
3549                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3550                         card->gdev->dev.kobj.name,
3551                         access_ctrl_req->subcmd_code,
3552                         cmd->data.setadapterparms.hdr.return_code);
3553                 break;
3554         }
3555         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3556         {
3557                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3558                         card->gdev->dev.kobj.name,
3559                         access_ctrl_req->subcmd_code,
3560                         cmd->data.setadapterparms.hdr.return_code);
3561                 dev_err(&card->gdev->dev, "Adapter does not "
3562                         "support QDIO data connection isolation\n");
3563
3564                 /* ensure isolation mode is "none" */
3565                 card->options.isolation = ISOLATION_MODE_NONE;
3566                 break;
3567         }
3568         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3569         {
3570                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3571                         card->gdev->dev.kobj.name,
3572                         access_ctrl_req->subcmd_code,
3573                         cmd->data.setadapterparms.hdr.return_code);
3574                 dev_err(&card->gdev->dev,
3575                         "Adapter is dedicated. "
3576                         "QDIO data connection isolation not supported\n");
3577
3578                 /* ensure isolation mode is "none" */
3579                 card->options.isolation = ISOLATION_MODE_NONE;
3580                 break;
3581         }
3582         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3583         {
3584                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3585                         card->gdev->dev.kobj.name,
3586                         access_ctrl_req->subcmd_code,
3587                         cmd->data.setadapterparms.hdr.return_code);
3588                 dev_err(&card->gdev->dev,
3589                         "TSO does not permit QDIO data connection isolation\n");
3590
3591                 /* ensure isolation mode is "none" */
3592                 card->options.isolation = ISOLATION_MODE_NONE;
3593                 break;
3594         }
3595         default:
3596         {
3597                 /* this should never happen */
3598                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3599                         "==UNKNOWN\n",
3600                         card->gdev->dev.kobj.name,
3601                         access_ctrl_req->subcmd_code,
3602                         cmd->data.setadapterparms.hdr.return_code);
3603
3604                 /* ensure isolation mode is "none" */
3605                 card->options.isolation = ISOLATION_MODE_NONE;
3606                 break;
3607         }
3608         }
3609         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3610         return 0;
3611 }
3612
3613 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3614                 enum qeth_ipa_isolation_modes isolation)
3615 {
3616         int rc;
3617         struct qeth_cmd_buffer *iob;
3618         struct qeth_ipa_cmd *cmd;
3619         struct qeth_set_access_ctrl *access_ctrl_req;
3620
3621         QETH_CARD_TEXT(card, 4, "setacctl");
3622
3623         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3624         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3625
3626         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3627                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3628                                    sizeof(struct qeth_set_access_ctrl));
3629         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3630         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3631         access_ctrl_req->subcmd_code = isolation;
3632
3633         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3634                                NULL);
3635         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3636         return rc;
3637 }
3638
3639 int qeth_set_access_ctrl_online(struct qeth_card *card)
3640 {
3641         int rc = 0;
3642
3643         QETH_CARD_TEXT(card, 4, "setactlo");
3644
3645         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3646              card->info.type == QETH_CARD_TYPE_OSX) &&
3647              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3648                 rc = qeth_setadpparms_set_access_ctrl(card,
3649                         card->options.isolation);
3650                 if (rc) {
3651                         QETH_DBF_MESSAGE(3,
3652                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3653                                 card->gdev->dev.kobj.name,
3654                                 rc);
3655                 }
3656         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3657                 card->options.isolation = ISOLATION_MODE_NONE;
3658
3659                 dev_err(&card->gdev->dev, "Adapter does not "
3660                         "support QDIO data connection isolation\n");
3661                 rc = -EOPNOTSUPP;
3662         }
3663         return rc;
3664 }
3665 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3666
3667 void qeth_tx_timeout(struct net_device *dev)
3668 {
3669         struct qeth_card *card;
3670
3671         card = dev->ml_priv;
3672         QETH_CARD_TEXT(card, 4, "txtimeo");
3673         card->stats.tx_errors++;
3674         qeth_schedule_recovery(card);
3675 }
3676 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3677
3678 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3679 {
3680         struct qeth_card *card = dev->ml_priv;
3681         int rc = 0;
3682
3683         switch (regnum) {
3684         case MII_BMCR: /* Basic mode control register */
3685                 rc = BMCR_FULLDPLX;
3686                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3687                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3688                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3689                         rc |= BMCR_SPEED100;
3690                 break;
3691         case MII_BMSR: /* Basic mode status register */
3692                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3693                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3694                      BMSR_100BASE4;
3695                 break;
3696         case MII_PHYSID1: /* PHYS ID 1 */
3697                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3698                      dev->dev_addr[2];
3699                 rc = (rc >> 5) & 0xFFFF;
3700                 break;
3701         case MII_PHYSID2: /* PHYS ID 2 */
3702                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3703                 break;
3704         case MII_ADVERTISE: /* Advertisement control reg */
3705                 rc = ADVERTISE_ALL;
3706                 break;
3707         case MII_LPA: /* Link partner ability reg */
3708                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3709                      LPA_100BASE4 | LPA_LPACK;
3710                 break;
3711         case MII_EXPANSION: /* Expansion register */
3712                 break;
3713         case MII_DCOUNTER: /* disconnect counter */
3714                 break;
3715         case MII_FCSCOUNTER: /* false carrier counter */
3716                 break;
3717         case MII_NWAYTEST: /* N-way auto-neg test register */
3718                 break;
3719         case MII_RERRCOUNTER: /* rx error counter */
3720                 rc = card->stats.rx_errors;
3721                 break;
3722         case MII_SREVISION: /* silicon revision */
3723                 break;
3724         case MII_RESV1: /* reserved 1 */
3725                 break;
3726         case MII_LBRERROR: /* loopback, rx, bypass error */
3727                 break;
3728         case MII_PHYADDR: /* physical address */
3729                 break;
3730         case MII_RESV2: /* reserved 2 */
3731                 break;
3732         case MII_TPISTATUS: /* TPI status for 10mbps */
3733                 break;
3734         case MII_NCONFIG: /* network interface config */
3735                 break;
3736         default:
3737                 break;
3738         }
3739         return rc;
3740 }
3741 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3742
3743 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3744                 struct qeth_cmd_buffer *iob, int len,
3745                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3746                         unsigned long),
3747                 void *reply_param)
3748 {
3749         u16 s1, s2;
3750
3751         QETH_CARD_TEXT(card, 4, "sendsnmp");
3752
3753         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3754         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3755                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3756         /* adjust PDU length fields in IPA_PDU_HEADER */
3757         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3758         s2 = (u32) len;
3759         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3760         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3761         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3762         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3763         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3764                                       reply_cb, reply_param);
3765 }
3766
3767 static int qeth_snmp_command_cb(struct qeth_card *card,
3768                 struct qeth_reply *reply, unsigned long sdata)
3769 {
3770         struct qeth_ipa_cmd *cmd;
3771         struct qeth_arp_query_info *qinfo;
3772         struct qeth_snmp_cmd *snmp;
3773         unsigned char *data;
3774         __u16 data_len;
3775
3776         QETH_CARD_TEXT(card, 3, "snpcmdcb");
3777
3778         cmd = (struct qeth_ipa_cmd *) sdata;
3779         data = (unsigned char *)((char *)cmd - reply->offset);
3780         qinfo = (struct qeth_arp_query_info *) reply->param;
3781         snmp = &cmd->data.setadapterparms.data.snmp;
3782
3783         if (cmd->hdr.return_code) {
3784                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3785                 return 0;
3786         }
3787         if (cmd->data.setadapterparms.hdr.return_code) {
3788                 cmd->hdr.return_code =
3789                         cmd->data.setadapterparms.hdr.return_code;
3790                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3791                 return 0;
3792         }
3793         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3794         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3795                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3796         else
3797                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3798
3799         /* check if there is enough room in userspace */
3800         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3801                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3802                 cmd->hdr.return_code = -ENOMEM;
3803                 return 0;
3804         }
3805         QETH_CARD_TEXT_(card, 4, "snore%i",
3806                        cmd->data.setadapterparms.hdr.used_total);
3807         QETH_CARD_TEXT_(card, 4, "sseqn%i",
3808                 cmd->data.setadapterparms.hdr.seq_no);
3809         /*copy entries to user buffer*/
3810         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3811                 memcpy(qinfo->udata + qinfo->udata_offset,
3812                        (char *)snmp,
3813                        data_len + offsetof(struct qeth_snmp_cmd, data));
3814                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3815         } else {
3816                 memcpy(qinfo->udata + qinfo->udata_offset,
3817                        (char *)&snmp->request, data_len);
3818         }
3819         qinfo->udata_offset += data_len;
3820         /* check if all replies received ... */
3821                 QETH_CARD_TEXT_(card, 4, "srtot%i",
3822                                cmd->data.setadapterparms.hdr.used_total);
3823                 QETH_CARD_TEXT_(card, 4, "srseq%i",
3824                                cmd->data.setadapterparms.hdr.seq_no);
3825         if (cmd->data.setadapterparms.hdr.seq_no <
3826             cmd->data.setadapterparms.hdr.used_total)
3827                 return 1;
3828         return 0;
3829 }
3830
3831 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3832 {
3833         struct qeth_cmd_buffer *iob;
3834         struct qeth_ipa_cmd *cmd;
3835         struct qeth_snmp_ureq *ureq;
3836         int req_len;
3837         struct qeth_arp_query_info qinfo = {0, };
3838         int rc = 0;
3839
3840         QETH_CARD_TEXT(card, 3, "snmpcmd");
3841
3842         if (card->info.guestlan)
3843                 return -EOPNOTSUPP;
3844
3845         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3846             (!card->options.layer2)) {
3847                 return -EOPNOTSUPP;
3848         }
3849         /* skip 4 bytes (data_len struct member) to get req_len */
3850         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3851                 return -EFAULT;
3852         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
3853         if (IS_ERR(ureq)) {
3854                 QETH_CARD_TEXT(card, 2, "snmpnome");
3855                 return PTR_ERR(ureq);
3856         }
3857         qinfo.udata_len = ureq->hdr.data_len;
3858         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3859         if (!qinfo.udata) {
3860                 kfree(ureq);
3861                 return -ENOMEM;
3862         }
3863         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3864
3865         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3866                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3867         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3868         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3869         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3870                                     qeth_snmp_command_cb, (void *)&qinfo);
3871         if (rc)
3872                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3873                            QETH_CARD_IFNAME(card), rc);
3874         else {
3875                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3876                         rc = -EFAULT;
3877         }
3878
3879         kfree(ureq);
3880         kfree(qinfo.udata);
3881         return rc;
3882 }
3883 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3884
3885 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3886 {
3887         switch (card->info.type) {
3888         case QETH_CARD_TYPE_IQD:
3889                 return 2;
3890         default:
3891                 return 0;
3892         }
3893 }
3894
3895 static void qeth_determine_capabilities(struct qeth_card *card)
3896 {
3897         int rc;
3898         int length;
3899         char *prcd;
3900         struct ccw_device *ddev;
3901         int ddev_offline = 0;
3902
3903         QETH_DBF_TEXT(SETUP, 2, "detcapab");
3904         ddev = CARD_DDEV(card);
3905         if (!ddev->online) {
3906                 ddev_offline = 1;
3907                 rc = ccw_device_set_online(ddev);
3908                 if (rc) {
3909                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3910                         goto out;
3911                 }
3912         }
3913
3914         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
3915         if (rc) {
3916                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
3917                         dev_name(&card->gdev->dev), rc);
3918                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3919                 goto out_offline;
3920         }
3921         qeth_configure_unitaddr(card, prcd);
3922         qeth_configure_blkt_default(card, prcd);
3923         kfree(prcd);
3924
3925         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
3926         if (rc)
3927                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3928
3929 out_offline:
3930         if (ddev_offline == 1)
3931                 ccw_device_set_offline(ddev);
3932 out:
3933         return;
3934 }
3935
3936 static int qeth_qdio_establish(struct qeth_card *card)
3937 {
3938         struct qdio_initialize init_data;
3939         char *qib_param_field;
3940         struct qdio_buffer **in_sbal_ptrs;
3941         struct qdio_buffer **out_sbal_ptrs;
3942         int i, j, k;
3943         int rc = 0;
3944
3945         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3946
3947         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3948                               GFP_KERNEL);
3949         if (!qib_param_field)
3950                 return -ENOMEM;
3951
3952         qeth_create_qib_param_field(card, qib_param_field);
3953         qeth_create_qib_param_field_blkt(card, qib_param_field);
3954
3955         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3956                                GFP_KERNEL);
3957         if (!in_sbal_ptrs) {
3958                 kfree(qib_param_field);
3959                 return -ENOMEM;
3960         }
3961         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3962                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3963                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3964
3965         out_sbal_ptrs =
3966                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3967                         sizeof(void *), GFP_KERNEL);
3968         if (!out_sbal_ptrs) {
3969                 kfree(in_sbal_ptrs);
3970                 kfree(qib_param_field);
3971                 return -ENOMEM;
3972         }
3973         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3974                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3975                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3976                                 card->qdio.out_qs[i]->bufs[j].buffer);
3977                 }
3978
3979         memset(&init_data, 0, sizeof(struct qdio_initialize));
3980         init_data.cdev                   = CARD_DDEV(card);
3981         init_data.q_format               = qeth_get_qdio_q_format(card);
3982         init_data.qib_param_field_format = 0;
3983         init_data.qib_param_field        = qib_param_field;
3984         init_data.no_input_qs            = 1;
3985         init_data.no_output_qs           = card->qdio.no_out_queues;
3986         init_data.input_handler          = card->discipline.input_handler;
3987         init_data.output_handler         = card->discipline.output_handler;
3988         init_data.queue_start_poll       = card->discipline.start_poll;
3989         init_data.int_parm               = (unsigned long) card;
3990         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3991         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3992         init_data.scan_threshold =
3993                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
3994
3995         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3996                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3997                 rc = qdio_allocate(&init_data);
3998                 if (rc) {
3999                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4000                         goto out;
4001                 }
4002                 rc = qdio_establish(&init_data);
4003                 if (rc) {
4004                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4005                         qdio_free(CARD_DDEV(card));
4006                 }
4007         }
4008 out:
4009         kfree(out_sbal_ptrs);
4010         kfree(in_sbal_ptrs);
4011         kfree(qib_param_field);
4012         return rc;
4013 }
4014
4015 static void qeth_core_free_card(struct qeth_card *card)
4016 {
4017
4018         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4019         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4020         qeth_clean_channel(&card->read);
4021         qeth_clean_channel(&card->write);
4022         if (card->dev)
4023                 free_netdev(card->dev);
4024         kfree(card->ip_tbd_list);
4025         qeth_free_qdio_buffers(card);
4026         unregister_service_level(&card->qeth_service_level);
4027         kfree(card);
4028 }
4029
4030 static struct ccw_device_id qeth_ids[] = {
4031         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4032                                         .driver_info = QETH_CARD_TYPE_OSD},
4033         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4034                                         .driver_info = QETH_CARD_TYPE_IQD},
4035         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4036                                         .driver_info = QETH_CARD_TYPE_OSN},
4037         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4038                                         .driver_info = QETH_CARD_TYPE_OSM},
4039         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4040                                         .driver_info = QETH_CARD_TYPE_OSX},
4041         {},
4042 };
4043 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4044
4045 static struct ccw_driver qeth_ccw_driver = {
4046         .driver = {
4047                 .owner = THIS_MODULE,
4048                 .name = "qeth",
4049         },
4050         .ids = qeth_ids,
4051         .probe = ccwgroup_probe_ccwdev,
4052         .remove = ccwgroup_remove_ccwdev,
4053 };
4054
4055 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4056                                 unsigned long driver_id)
4057 {
4058         return ccwgroup_create_from_string(root_dev, driver_id,
4059                                            &qeth_ccw_driver, 3, buf);
4060 }
4061
4062 int qeth_core_hardsetup_card(struct qeth_card *card)
4063 {
4064         int retries = 0;
4065         int rc;
4066
4067         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4068         atomic_set(&card->force_alloc_skb, 0);
4069         qeth_get_channel_path_desc(card);
4070 retry:
4071         if (retries)
4072                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4073                         dev_name(&card->gdev->dev));
4074         ccw_device_set_offline(CARD_DDEV(card));
4075         ccw_device_set_offline(CARD_WDEV(card));
4076         ccw_device_set_offline(CARD_RDEV(card));
4077         rc = ccw_device_set_online(CARD_RDEV(card));
4078         if (rc)
4079                 goto retriable;
4080         rc = ccw_device_set_online(CARD_WDEV(card));
4081         if (rc)
4082                 goto retriable;
4083         rc = ccw_device_set_online(CARD_DDEV(card));
4084         if (rc)
4085                 goto retriable;
4086         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4087 retriable:
4088         if (rc == -ERESTARTSYS) {
4089                 QETH_DBF_TEXT(SETUP, 2, "break1");
4090                 return rc;
4091         } else if (rc) {
4092                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4093                 if (++retries > 3)
4094                         goto out;
4095                 else
4096                         goto retry;
4097         }
4098         qeth_determine_capabilities(card);
4099         qeth_init_tokens(card);
4100         qeth_init_func_level(card);
4101         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4102         if (rc == -ERESTARTSYS) {
4103                 QETH_DBF_TEXT(SETUP, 2, "break2");
4104                 return rc;
4105         } else if (rc) {
4106                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4107                 if (--retries < 0)
4108                         goto out;
4109                 else
4110                         goto retry;
4111         }
4112         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4113         if (rc == -ERESTARTSYS) {
4114                 QETH_DBF_TEXT(SETUP, 2, "break3");
4115                 return rc;
4116         } else if (rc) {
4117                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4118                 if (--retries < 0)
4119                         goto out;
4120                 else
4121                         goto retry;
4122         }
4123         card->read_or_write_problem = 0;
4124         rc = qeth_mpc_initialize(card);
4125         if (rc) {
4126                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4127                 goto out;
4128         }
4129
4130         card->options.ipa4.supported_funcs = 0;
4131         card->options.adp.supported_funcs = 0;
4132         card->info.diagass_support = 0;
4133         qeth_query_ipassists(card, QETH_PROT_IPV4);
4134         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4135                 qeth_query_setadapterparms(card);
4136         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4137                 qeth_query_setdiagass(card);
4138         return 0;
4139 out:
4140         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4141                 "an error on the device\n");
4142         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4143                 dev_name(&card->gdev->dev), rc);
4144         return rc;
4145 }
4146 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4147
4148 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4149                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4150 {
4151         struct page *page = virt_to_page(element->addr);
4152         if (*pskb == NULL) {
4153                 /* the upper protocol layers assume that there is data in the
4154                  * skb itself. Copy a small amount (64 bytes) to make them
4155                  * happy. */
4156                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4157                 if (!(*pskb))
4158                         return -ENOMEM;
4159                 skb_reserve(*pskb, ETH_HLEN);
4160                 if (data_len <= 64) {
4161                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4162                                 data_len);
4163                 } else {
4164                         get_page(page);
4165                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4166                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4167                                 data_len - 64);
4168                         (*pskb)->data_len += data_len - 64;
4169                         (*pskb)->len      += data_len - 64;
4170                         (*pskb)->truesize += data_len - 64;
4171                         (*pfrag)++;
4172                 }
4173         } else {
4174                 get_page(page);
4175                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4176                 (*pskb)->data_len += data_len;
4177                 (*pskb)->len      += data_len;
4178                 (*pskb)->truesize += data_len;
4179                 (*pfrag)++;
4180         }
4181         return 0;
4182 }
4183
4184 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4185                 struct qdio_buffer *buffer,
4186                 struct qdio_buffer_element **__element, int *__offset,
4187                 struct qeth_hdr **hdr)
4188 {
4189         struct qdio_buffer_element *element = *__element;
4190         int offset = *__offset;
4191         struct sk_buff *skb = NULL;
4192         int skb_len = 0;
4193         void *data_ptr;
4194         int data_len;
4195         int headroom = 0;
4196         int use_rx_sg = 0;
4197         int frag = 0;
4198
4199         /* qeth_hdr must not cross element boundaries */
4200         if (element->length < offset + sizeof(struct qeth_hdr)) {
4201                 if (qeth_is_last_sbale(element))
4202                         return NULL;
4203                 element++;
4204                 offset = 0;
4205                 if (element->length < sizeof(struct qeth_hdr))
4206                         return NULL;
4207         }
4208         *hdr = element->addr + offset;
4209
4210         offset += sizeof(struct qeth_hdr);
4211         switch ((*hdr)->hdr.l2.id) {
4212         case QETH_HEADER_TYPE_LAYER2:
4213                 skb_len = (*hdr)->hdr.l2.pkt_length;
4214                 break;
4215         case QETH_HEADER_TYPE_LAYER3:
4216                 skb_len = (*hdr)->hdr.l3.length;
4217                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4218                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4219                         headroom = TR_HLEN;
4220                 else
4221                         headroom = ETH_HLEN;
4222                 break;
4223         case QETH_HEADER_TYPE_OSN:
4224                 skb_len = (*hdr)->hdr.osn.pdu_length;
4225                 headroom = sizeof(struct qeth_hdr);
4226                 break;
4227         default:
4228                 break;
4229         }
4230
4231         if (!skb_len)
4232                 return NULL;
4233
4234         if ((skb_len >= card->options.rx_sg_cb) &&
4235             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4236             (!atomic_read(&card->force_alloc_skb))) {
4237                 use_rx_sg = 1;
4238         } else {
4239                 skb = dev_alloc_skb(skb_len + headroom);
4240                 if (!skb)
4241                         goto no_mem;
4242                 if (headroom)
4243                         skb_reserve(skb, headroom);
4244         }
4245
4246         data_ptr = element->addr + offset;
4247         while (skb_len) {
4248                 data_len = min(skb_len, (int)(element->length - offset));
4249                 if (data_len) {
4250                         if (use_rx_sg) {
4251                                 if (qeth_create_skb_frag(element, &skb, offset,
4252                                     &frag, data_len))
4253                                         goto no_mem;
4254                         } else {
4255                                 memcpy(skb_put(skb, data_len), data_ptr,
4256                                         data_len);
4257                         }
4258                 }
4259                 skb_len -= data_len;
4260                 if (skb_len) {
4261                         if (qeth_is_last_sbale(element)) {
4262                                 QETH_CARD_TEXT(card, 4, "unexeob");
4263                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4264                                 dev_kfree_skb_any(skb);
4265                                 card->stats.rx_errors++;
4266                                 return NULL;
4267                         }
4268                         element++;
4269                         offset = 0;
4270                         data_ptr = element->addr;
4271                 } else {
4272                         offset += data_len;
4273                 }
4274         }
4275         *__element = element;
4276         *__offset = offset;
4277         if (use_rx_sg && card->options.performance_stats) {
4278                 card->perf_stats.sg_skbs_rx++;
4279                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4280         }
4281         return skb;
4282 no_mem:
4283         if (net_ratelimit()) {
4284                 QETH_CARD_TEXT(card, 2, "noskbmem");
4285         }
4286         card->stats.rx_dropped++;
4287         return NULL;
4288 }
4289 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4290
4291 static void qeth_unregister_dbf_views(void)
4292 {
4293         int x;
4294         for (x = 0; x < QETH_DBF_INFOS; x++) {
4295                 debug_unregister(qeth_dbf[x].id);
4296                 qeth_dbf[x].id = NULL;
4297         }
4298 }
4299
4300 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4301 {
4302         char dbf_txt_buf[32];
4303         va_list args;
4304
4305         if (level > id->level)
4306                 return;
4307         va_start(args, fmt);
4308         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4309         va_end(args);
4310         debug_text_event(id, level, dbf_txt_buf);
4311 }
4312 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4313
4314 static int qeth_register_dbf_views(void)
4315 {
4316         int ret;
4317         int x;
4318
4319         for (x = 0; x < QETH_DBF_INFOS; x++) {
4320                 /* register the areas */
4321                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4322                                                 qeth_dbf[x].pages,
4323                                                 qeth_dbf[x].areas,
4324                                                 qeth_dbf[x].len);
4325                 if (qeth_dbf[x].id == NULL) {
4326                         qeth_unregister_dbf_views();
4327                         return -ENOMEM;
4328                 }
4329
4330                 /* register a view */
4331                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4332                 if (ret) {
4333                         qeth_unregister_dbf_views();
4334                         return ret;
4335                 }
4336
4337                 /* set a passing level */
4338                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4339         }
4340
4341         return 0;
4342 }
4343
4344 int qeth_core_load_discipline(struct qeth_card *card,
4345                 enum qeth_discipline_id discipline)
4346 {
4347         int rc = 0;
4348         switch (discipline) {
4349         case QETH_DISCIPLINE_LAYER3:
4350                 card->discipline.ccwgdriver = try_then_request_module(
4351                         symbol_get(qeth_l3_ccwgroup_driver),
4352                         "qeth_l3");
4353                 break;
4354         case QETH_DISCIPLINE_LAYER2:
4355                 card->discipline.ccwgdriver = try_then_request_module(
4356                         symbol_get(qeth_l2_ccwgroup_driver),
4357                         "qeth_l2");
4358                 break;
4359         }
4360         if (!card->discipline.ccwgdriver) {
4361                 dev_err(&card->gdev->dev, "There is no kernel module to "
4362                         "support discipline %d\n", discipline);
4363                 rc = -EINVAL;
4364         }
4365         return rc;
4366 }
4367
4368 void qeth_core_free_discipline(struct qeth_card *card)
4369 {
4370         if (card->options.layer2)
4371                 symbol_put(qeth_l2_ccwgroup_driver);
4372         else
4373                 symbol_put(qeth_l3_ccwgroup_driver);
4374         card->discipline.ccwgdriver = NULL;
4375 }
4376
4377 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4378 {
4379         struct qeth_card *card;
4380         struct device *dev;
4381         int rc;
4382         unsigned long flags;
4383         char dbf_name[20];
4384
4385         QETH_DBF_TEXT(SETUP, 2, "probedev");
4386
4387         dev = &gdev->dev;
4388         if (!get_device(dev))
4389                 return -ENODEV;
4390
4391         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4392
4393         card = qeth_alloc_card();
4394         if (!card) {
4395                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4396                 rc = -ENOMEM;
4397                 goto err_dev;
4398         }
4399
4400         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4401                 dev_name(&gdev->dev));
4402         card->debug = debug_register(dbf_name, 2, 1, 8);
4403         if (!card->debug) {
4404                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4405                 rc = -ENOMEM;
4406                 goto err_card;
4407         }
4408         debug_register_view(card->debug, &debug_hex_ascii_view);
4409
4410         card->read.ccwdev  = gdev->cdev[0];
4411         card->write.ccwdev = gdev->cdev[1];
4412         card->data.ccwdev  = gdev->cdev[2];
4413         dev_set_drvdata(&gdev->dev, card);
4414         card->gdev = gdev;
4415         gdev->cdev[0]->handler = qeth_irq;
4416         gdev->cdev[1]->handler = qeth_irq;
4417         gdev->cdev[2]->handler = qeth_irq;
4418
4419         rc = qeth_determine_card_type(card);
4420         if (rc) {
4421                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4422                 goto err_dbf;
4423         }
4424         rc = qeth_setup_card(card);
4425         if (rc) {
4426                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4427                 goto err_dbf;
4428         }
4429
4430         if (card->info.type == QETH_CARD_TYPE_OSN)
4431                 rc = qeth_core_create_osn_attributes(dev);
4432         else
4433                 rc = qeth_core_create_device_attributes(dev);
4434         if (rc)
4435                 goto err_dbf;
4436         switch (card->info.type) {
4437         case QETH_CARD_TYPE_OSN:
4438         case QETH_CARD_TYPE_OSM:
4439                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4440                 if (rc)
4441                         goto err_attr;
4442                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4443                 if (rc)
4444                         goto err_disc;
4445         case QETH_CARD_TYPE_OSD:
4446         case QETH_CARD_TYPE_OSX:
4447         default:
4448                 break;
4449         }
4450
4451         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4452         list_add_tail(&card->list, &qeth_core_card_list.list);
4453         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4454
4455         qeth_determine_capabilities(card);
4456         return 0;
4457
4458 err_disc:
4459         qeth_core_free_discipline(card);
4460 err_attr:
4461         if (card->info.type == QETH_CARD_TYPE_OSN)
4462                 qeth_core_remove_osn_attributes(dev);
4463         else
4464                 qeth_core_remove_device_attributes(dev);
4465 err_dbf:
4466         debug_unregister(card->debug);
4467 err_card:
4468         qeth_core_free_card(card);
4469 err_dev:
4470         put_device(dev);
4471         return rc;
4472 }
4473
4474 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4475 {
4476         unsigned long flags;
4477         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4478
4479         QETH_DBF_TEXT(SETUP, 2, "removedv");
4480
4481         if (card->info.type == QETH_CARD_TYPE_OSN) {
4482                 qeth_core_remove_osn_attributes(&gdev->dev);
4483         } else {
4484                 qeth_core_remove_device_attributes(&gdev->dev);
4485         }
4486
4487         if (card->discipline.ccwgdriver) {
4488                 card->discipline.ccwgdriver->remove(gdev);
4489                 qeth_core_free_discipline(card);
4490         }
4491
4492         debug_unregister(card->debug);
4493         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4494         list_del(&card->list);
4495         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4496         qeth_core_free_card(card);
4497         dev_set_drvdata(&gdev->dev, NULL);
4498         put_device(&gdev->dev);
4499         return;
4500 }
4501
4502 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4503 {
4504         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4505         int rc = 0;
4506         int def_discipline;
4507
4508         if (!card->discipline.ccwgdriver) {
4509                 if (card->info.type == QETH_CARD_TYPE_IQD)
4510                         def_discipline = QETH_DISCIPLINE_LAYER3;
4511                 else
4512                         def_discipline = QETH_DISCIPLINE_LAYER2;
4513                 rc = qeth_core_load_discipline(card, def_discipline);
4514                 if (rc)
4515                         goto err;
4516                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4517                 if (rc)
4518                         goto err;
4519         }
4520         rc = card->discipline.ccwgdriver->set_online(gdev);
4521 err:
4522         return rc;
4523 }
4524
4525 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4526 {
4527         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4528         return card->discipline.ccwgdriver->set_offline(gdev);
4529 }
4530
4531 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4532 {
4533         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4534         if (card->discipline.ccwgdriver &&
4535             card->discipline.ccwgdriver->shutdown)
4536                 card->discipline.ccwgdriver->shutdown(gdev);
4537 }
4538
4539 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4540 {
4541         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4542         if (card->discipline.ccwgdriver &&
4543             card->discipline.ccwgdriver->prepare)
4544                 return card->discipline.ccwgdriver->prepare(gdev);
4545         return 0;
4546 }
4547
4548 static void qeth_core_complete(struct ccwgroup_device *gdev)
4549 {
4550         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4551         if (card->discipline.ccwgdriver &&
4552             card->discipline.ccwgdriver->complete)
4553                 card->discipline.ccwgdriver->complete(gdev);
4554 }
4555
4556 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4557 {
4558         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4559         if (card->discipline.ccwgdriver &&
4560             card->discipline.ccwgdriver->freeze)
4561                 return card->discipline.ccwgdriver->freeze(gdev);
4562         return 0;
4563 }
4564
4565 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4566 {
4567         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4568         if (card->discipline.ccwgdriver &&
4569             card->discipline.ccwgdriver->thaw)
4570                 return card->discipline.ccwgdriver->thaw(gdev);
4571         return 0;
4572 }
4573
4574 static int qeth_core_restore(struct ccwgroup_device *gdev)
4575 {
4576         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4577         if (card->discipline.ccwgdriver &&
4578             card->discipline.ccwgdriver->restore)
4579                 return card->discipline.ccwgdriver->restore(gdev);
4580         return 0;
4581 }
4582
4583 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4584         .driver = {
4585                 .owner = THIS_MODULE,
4586                 .name = "qeth",
4587         },
4588         .driver_id = 0xD8C5E3C8,
4589         .probe = qeth_core_probe_device,
4590         .remove = qeth_core_remove_device,
4591         .set_online = qeth_core_set_online,
4592         .set_offline = qeth_core_set_offline,
4593         .shutdown = qeth_core_shutdown,
4594         .prepare = qeth_core_prepare,
4595         .complete = qeth_core_complete,
4596         .freeze = qeth_core_freeze,
4597         .thaw = qeth_core_thaw,
4598         .restore = qeth_core_restore,
4599 };
4600
4601 static ssize_t
4602 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4603                            size_t count)
4604 {
4605         int err;
4606         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4607                                         qeth_core_ccwgroup_driver.driver_id);
4608         if (err)
4609                 return err;
4610         else
4611                 return count;
4612 }
4613
4614 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4615
4616 static struct {
4617         const char str[ETH_GSTRING_LEN];
4618 } qeth_ethtool_stats_keys[] = {
4619 /*  0 */{"rx skbs"},
4620         {"rx buffers"},
4621         {"tx skbs"},
4622         {"tx buffers"},
4623         {"tx skbs no packing"},
4624         {"tx buffers no packing"},
4625         {"tx skbs packing"},
4626         {"tx buffers packing"},
4627         {"tx sg skbs"},
4628         {"tx sg frags"},
4629 /* 10 */{"rx sg skbs"},
4630         {"rx sg frags"},
4631         {"rx sg page allocs"},
4632         {"tx large kbytes"},
4633         {"tx large count"},
4634         {"tx pk state ch n->p"},
4635         {"tx pk state ch p->n"},
4636         {"tx pk watermark low"},
4637         {"tx pk watermark high"},
4638         {"queue 0 buffer usage"},
4639 /* 20 */{"queue 1 buffer usage"},
4640         {"queue 2 buffer usage"},
4641         {"queue 3 buffer usage"},
4642         {"rx poll time"},
4643         {"rx poll count"},
4644         {"rx do_QDIO time"},
4645         {"rx do_QDIO count"},
4646         {"tx handler time"},
4647         {"tx handler count"},
4648         {"tx time"},
4649 /* 30 */{"tx count"},
4650         {"tx do_QDIO time"},
4651         {"tx do_QDIO count"},
4652         {"tx csum"},
4653         {"tx lin"},
4654 };
4655
4656 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4657 {
4658         switch (stringset) {
4659         case ETH_SS_STATS:
4660                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4661         default:
4662                 return -EINVAL;
4663         }
4664 }
4665 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4666
4667 void qeth_core_get_ethtool_stats(struct net_device *dev,
4668                 struct ethtool_stats *stats, u64 *data)
4669 {
4670         struct qeth_card *card = dev->ml_priv;
4671         data[0] = card->stats.rx_packets -
4672                                 card->perf_stats.initial_rx_packets;
4673         data[1] = card->perf_stats.bufs_rec;
4674         data[2] = card->stats.tx_packets -
4675                                 card->perf_stats.initial_tx_packets;
4676         data[3] = card->perf_stats.bufs_sent;
4677         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4678                         - card->perf_stats.skbs_sent_pack;
4679         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4680         data[6] = card->perf_stats.skbs_sent_pack;
4681         data[7] = card->perf_stats.bufs_sent_pack;
4682         data[8] = card->perf_stats.sg_skbs_sent;
4683         data[9] = card->perf_stats.sg_frags_sent;
4684         data[10] = card->perf_stats.sg_skbs_rx;
4685         data[11] = card->perf_stats.sg_frags_rx;
4686         data[12] = card->perf_stats.sg_alloc_page_rx;
4687         data[13] = (card->perf_stats.large_send_bytes >> 10);
4688         data[14] = card->perf_stats.large_send_cnt;
4689         data[15] = card->perf_stats.sc_dp_p;
4690         data[16] = card->perf_stats.sc_p_dp;
4691         data[17] = QETH_LOW_WATERMARK_PACK;
4692         data[18] = QETH_HIGH_WATERMARK_PACK;
4693         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4694         data[20] = (card->qdio.no_out_queues > 1) ?
4695                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4696         data[21] = (card->qdio.no_out_queues > 2) ?
4697                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4698         data[22] = (card->qdio.no_out_queues > 3) ?
4699                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4700         data[23] = card->perf_stats.inbound_time;
4701         data[24] = card->perf_stats.inbound_cnt;
4702         data[25] = card->perf_stats.inbound_do_qdio_time;
4703         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4704         data[27] = card->perf_stats.outbound_handler_time;
4705         data[28] = card->perf_stats.outbound_handler_cnt;
4706         data[29] = card->perf_stats.outbound_time;
4707         data[30] = card->perf_stats.outbound_cnt;
4708         data[31] = card->perf_stats.outbound_do_qdio_time;
4709         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4710         data[33] = card->perf_stats.tx_csum;
4711         data[34] = card->perf_stats.tx_lin;
4712 }
4713 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4714
4715 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4716 {
4717         switch (stringset) {
4718         case ETH_SS_STATS:
4719                 memcpy(data, &qeth_ethtool_stats_keys,
4720                         sizeof(qeth_ethtool_stats_keys));
4721                 break;
4722         default:
4723                 WARN_ON(1);
4724                 break;
4725         }
4726 }
4727 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4728
4729 void qeth_core_get_drvinfo(struct net_device *dev,
4730                 struct ethtool_drvinfo *info)
4731 {
4732         struct qeth_card *card = dev->ml_priv;
4733         if (card->options.layer2)
4734                 strcpy(info->driver, "qeth_l2");
4735         else
4736                 strcpy(info->driver, "qeth_l3");
4737
4738         strcpy(info->version, "1.0");
4739         strcpy(info->fw_version, card->info.mcl_level);
4740         sprintf(info->bus_info, "%s/%s/%s",
4741                         CARD_RDEV_ID(card),
4742                         CARD_WDEV_ID(card),
4743                         CARD_DDEV_ID(card));
4744 }
4745 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4746
4747 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4748                                         struct ethtool_cmd *ecmd)
4749 {
4750         struct qeth_card *card = netdev->ml_priv;
4751         enum qeth_link_types link_type;
4752
4753         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4754                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4755         else
4756                 link_type = card->info.link_type;
4757
4758         ecmd->transceiver = XCVR_INTERNAL;
4759         ecmd->supported = SUPPORTED_Autoneg;
4760         ecmd->advertising = ADVERTISED_Autoneg;
4761         ecmd->duplex = DUPLEX_FULL;
4762         ecmd->autoneg = AUTONEG_ENABLE;
4763
4764         switch (link_type) {
4765         case QETH_LINK_TYPE_FAST_ETH:
4766         case QETH_LINK_TYPE_LANE_ETH100:
4767                 ecmd->supported |= SUPPORTED_10baseT_Half |
4768                                         SUPPORTED_10baseT_Full |
4769                                         SUPPORTED_100baseT_Half |
4770                                         SUPPORTED_100baseT_Full |
4771                                         SUPPORTED_TP;
4772                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4773                                         ADVERTISED_10baseT_Full |
4774                                         ADVERTISED_100baseT_Half |
4775                                         ADVERTISED_100baseT_Full |
4776                                         ADVERTISED_TP;
4777                 ecmd->speed = SPEED_100;
4778                 ecmd->port = PORT_TP;
4779                 break;
4780
4781         case QETH_LINK_TYPE_GBIT_ETH:
4782         case QETH_LINK_TYPE_LANE_ETH1000:
4783                 ecmd->supported |= SUPPORTED_10baseT_Half |
4784                                         SUPPORTED_10baseT_Full |
4785                                         SUPPORTED_100baseT_Half |
4786                                         SUPPORTED_100baseT_Full |
4787                                         SUPPORTED_1000baseT_Half |
4788                                         SUPPORTED_1000baseT_Full |
4789                                         SUPPORTED_FIBRE;
4790                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4791                                         ADVERTISED_10baseT_Full |
4792                                         ADVERTISED_100baseT_Half |
4793                                         ADVERTISED_100baseT_Full |
4794                                         ADVERTISED_1000baseT_Half |
4795                                         ADVERTISED_1000baseT_Full |
4796                                         ADVERTISED_FIBRE;
4797                 ecmd->speed = SPEED_1000;
4798                 ecmd->port = PORT_FIBRE;
4799                 break;
4800
4801         case QETH_LINK_TYPE_10GBIT_ETH:
4802                 ecmd->supported |= SUPPORTED_10baseT_Half |
4803                                         SUPPORTED_10baseT_Full |
4804                                         SUPPORTED_100baseT_Half |
4805                                         SUPPORTED_100baseT_Full |
4806                                         SUPPORTED_1000baseT_Half |
4807                                         SUPPORTED_1000baseT_Full |
4808                                         SUPPORTED_10000baseT_Full |
4809                                         SUPPORTED_FIBRE;
4810                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4811                                         ADVERTISED_10baseT_Full |
4812                                         ADVERTISED_100baseT_Half |
4813                                         ADVERTISED_100baseT_Full |
4814                                         ADVERTISED_1000baseT_Half |
4815                                         ADVERTISED_1000baseT_Full |
4816                                         ADVERTISED_10000baseT_Full |
4817                                         ADVERTISED_FIBRE;
4818                 ecmd->speed = SPEED_10000;
4819                 ecmd->port = PORT_FIBRE;
4820                 break;
4821
4822         default:
4823                 ecmd->supported |= SUPPORTED_10baseT_Half |
4824                                         SUPPORTED_10baseT_Full |
4825                                         SUPPORTED_TP;
4826                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4827                                         ADVERTISED_10baseT_Full |
4828                                         ADVERTISED_TP;
4829                 ecmd->speed = SPEED_10;
4830                 ecmd->port = PORT_TP;
4831         }
4832
4833         return 0;
4834 }
4835 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4836
4837 static int __init qeth_core_init(void)
4838 {
4839         int rc;
4840
4841         pr_info("loading core functions\n");
4842         INIT_LIST_HEAD(&qeth_core_card_list.list);
4843         rwlock_init(&qeth_core_card_list.rwlock);
4844
4845         rc = qeth_register_dbf_views();
4846         if (rc)
4847                 goto out_err;
4848         rc = ccw_driver_register(&qeth_ccw_driver);
4849         if (rc)
4850                 goto ccw_err;
4851         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4852         if (rc)
4853                 goto ccwgroup_err;
4854         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4855                                 &driver_attr_group);
4856         if (rc)
4857                 goto driver_err;
4858         qeth_core_root_dev = root_device_register("qeth");
4859         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4860         if (rc)
4861                 goto register_err;
4862
4863         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4864                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4865         if (!qeth_core_header_cache) {
4866                 rc = -ENOMEM;
4867                 goto slab_err;
4868         }
4869
4870         return 0;
4871 slab_err:
4872         root_device_unregister(qeth_core_root_dev);
4873 register_err:
4874         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4875                            &driver_attr_group);
4876 driver_err:
4877         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4878 ccwgroup_err:
4879         ccw_driver_unregister(&qeth_ccw_driver);
4880 ccw_err:
4881         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4882         qeth_unregister_dbf_views();
4883 out_err:
4884         pr_err("Initializing the qeth device driver failed\n");
4885         return rc;
4886 }
4887
4888 static void __exit qeth_core_exit(void)
4889 {
4890         root_device_unregister(qeth_core_root_dev);
4891         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4892                            &driver_attr_group);
4893         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4894         ccw_driver_unregister(&qeth_ccw_driver);
4895         kmem_cache_destroy(qeth_core_header_cache);
4896         qeth_unregister_dbf_views();
4897         pr_info("core functions removed\n");
4898 }
4899
4900 module_init(qeth_core_init);
4901 module_exit(qeth_core_exit);
4902 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4903 MODULE_DESCRIPTION("qeth core functions");
4904 MODULE_LICENSE("GPL");