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].flags & 0x40)
 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].flags = 0;
 910         }
 911         buf->buffer->element[15].flags = 0;
 912         buf->next_element_to_fill = 0;
 913         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 914 }
 915
 916 void qeth_clear_qdio_buffers(struct qeth_card *card)
 917 {
 918         int i, j;
 919
 920         QETH_CARD_TEXT(card, 2, "clearqdbf");
 921         /* clear outbound buffers to free skbs */
 922         for (i = 0; i < card->qdio.no_out_queues; ++i)
 923                 if (card->qdio.out_qs[i]) {
 924                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 925                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 926                                                 &card->qdio.out_qs[i]->bufs[j]);
 927                 }
 928 }
 929 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 930
 931 static void qeth_free_buffer_pool(struct qeth_card *card)
 932 {
 933         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 934         int i = 0;
 935         list_for_each_entry_safe(pool_entry, tmp,
 936                                  &card->qdio.init_pool.entry_list, init_list){
 937                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 938                         free_page((unsigned long)pool_entry->elements[i]);
 939                 list_del(&pool_entry->init_list);
 940                 kfree(pool_entry);
 941         }
 942 }
 943
 944 static void qeth_free_qdio_buffers(struct qeth_card *card)
 945 {
 946         int i, j;
 947
 948         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 949                 QETH_QDIO_UNINITIALIZED)
 950                 return;
 951         kfree(card->qdio.in_q);
 952         card->qdio.in_q = NULL;
 953         /* inbound buffer pool */
 954         qeth_free_buffer_pool(card);
 955         /* free outbound qdio_qs */
 956         if (card->qdio.out_qs) {
 957                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 958                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 959                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 960                                                 &card->qdio.out_qs[i]->bufs[j]);
 961                         kfree(card->qdio.out_qs[i]);
 962                 }
 963                 kfree(card->qdio.out_qs);
 964                 card->qdio.out_qs = NULL;
 965         }
 966 }
 967
 968 static void qeth_clean_channel(struct qeth_channel *channel)
 969 {
 970         int cnt;
 971
 972         QETH_DBF_TEXT(SETUP, 2, "freech");
 973         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 974                 kfree(channel->iob[cnt].data);
 975 }
 976
 977 static void qeth_get_channel_path_desc(struct qeth_card *card)
 978 {
 979         struct ccw_device *ccwdev;
 980         struct channelPath_dsc {
 981                 u8 flags;
 982                 u8 lsn;
 983                 u8 desc;
 984                 u8 chpid;
 985                 u8 swla;
 986                 u8 zeroes;
 987                 u8 chla;
 988                 u8 chpp;
 989         } *chp_dsc;
 990
 991         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
 992
 993         ccwdev = card->data.ccwdev;
 994         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
 995         if (chp_dsc != NULL) {
 996                 /* CHPP field bit 6 == 1 -> single queue */
 997                 if ((chp_dsc->chpp & 0x02) == 0x02) {
 998                         if ((atomic_read(&card->qdio.state) !=
 999                                 QETH_QDIO_UNINITIALIZED) &&
1000                             (card->qdio.no_out_queues == 4))
1001                                 /* change from 4 to 1 outbound queues */
1002                                 qeth_free_qdio_buffers(card);
1003                         card->qdio.no_out_queues = 1;
1004                         if (card->qdio.default_out_queue != 0)
1005                                 dev_info(&card->gdev->dev,
1006                                         "Priority Queueing not supported\n");
1007                         card->qdio.default_out_queue = 0;
1008                 } else {
1009                         if ((atomic_read(&card->qdio.state) !=
1010                                 QETH_QDIO_UNINITIALIZED) &&
1011                             (card->qdio.no_out_queues == 1)) {
1012                                 /* change from 1 to 4 outbound queues */
1013                                 qeth_free_qdio_buffers(card);
1014                                 card->qdio.default_out_queue = 2;
1015                         }
1016                         card->qdio.no_out_queues = 4;
1017                 }
1018                 card->info.func_level = 0x4100 + chp_dsc->desc;
1019                 kfree(chp_dsc);
1020         }
1021         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1022         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1023         return;
1024 }
1025
1026 static void qeth_init_qdio_info(struct qeth_card *card)
1027 {
1028         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1029         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1030         /* inbound */
1031         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1032         if (card->info.type == QETH_CARD_TYPE_IQD)
1033                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1034         else
1035                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1036         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1037         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1038         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1039 }
1040
1041 static void qeth_set_intial_options(struct qeth_card *card)
1042 {
1043         card->options.route4.type = NO_ROUTER;
1044         card->options.route6.type = NO_ROUTER;
1045         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1046         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1047         card->options.fake_broadcast = 0;
1048         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1049         card->options.performance_stats = 0;
1050         card->options.rx_sg_cb = QETH_RX_SG_CB;
1051         card->options.isolation = ISOLATION_MODE_NONE;
1052 }
1053
1054 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1055 {
1056         unsigned long flags;
1057         int rc = 0;
1058
1059         spin_lock_irqsave(&card->thread_mask_lock, flags);
1060         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1061                         (u8) card->thread_start_mask,
1062                         (u8) card->thread_allowed_mask,
1063                         (u8) card->thread_running_mask);
1064         rc = (card->thread_start_mask & thread);
1065         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1066         return rc;
1067 }
1068
1069 static void qeth_start_kernel_thread(struct work_struct *work)
1070 {
1071         struct qeth_card *card = container_of(work, struct qeth_card,
1072                                         kernel_thread_starter);
1073         QETH_CARD_TEXT(card , 2, "strthrd");
1074
1075         if (card->read.state != CH_STATE_UP &&
1076             card->write.state != CH_STATE_UP)
1077                 return;
1078         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1079                 kthread_run(card->discipline.recover, (void *) card,
1080                                 "qeth_recover");
1081 }
1082
1083 static int qeth_setup_card(struct qeth_card *card)
1084 {
1085
1086         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1087         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1088
1089         card->read.state  = CH_STATE_DOWN;
1090         card->write.state = CH_STATE_DOWN;
1091         card->data.state  = CH_STATE_DOWN;
1092         card->state = CARD_STATE_DOWN;
1093         card->lan_online = 0;
1094         card->read_or_write_problem = 0;
1095         card->dev = NULL;
1096         spin_lock_init(&card->vlanlock);
1097         spin_lock_init(&card->mclock);
1098         card->vlangrp = NULL;
1099         spin_lock_init(&card->lock);
1100         spin_lock_init(&card->ip_lock);
1101         spin_lock_init(&card->thread_mask_lock);
1102         mutex_init(&card->conf_mutex);
1103         mutex_init(&card->discipline_mutex);
1104         card->thread_start_mask = 0;
1105         card->thread_allowed_mask = 0;
1106         card->thread_running_mask = 0;
1107         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1108         INIT_LIST_HEAD(&card->ip_list);
1109         INIT_LIST_HEAD(card->ip_tbd_list);
1110         INIT_LIST_HEAD(&card->cmd_waiter_list);
1111         init_waitqueue_head(&card->wait_q);
1112         /* initial options */
1113         qeth_set_intial_options(card);
1114         /* IP address takeover */
1115         INIT_LIST_HEAD(&card->ipato.entries);
1116         card->ipato.enabled = 0;
1117         card->ipato.invert4 = 0;
1118         card->ipato.invert6 = 0;
1119         /* init QDIO stuff */
1120         qeth_init_qdio_info(card);
1121         return 0;
1122 }
1123
1124 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1125 {
1126         struct qeth_card *card = container_of(slr, struct qeth_card,
1127                                         qeth_service_level);
1128         if (card->info.mcl_level[0])
1129                 seq_printf(m, "qeth: %s firmware level %s\n",
1130                         CARD_BUS_ID(card), card->info.mcl_level);
1131 }
1132
1133 static struct qeth_card *qeth_alloc_card(void)
1134 {
1135         struct qeth_card *card;
1136
1137         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1138         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1139         if (!card)
1140                 goto out;
1141         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1142         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1143         if (!card->ip_tbd_list) {
1144                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1145                 goto out_card;
1146         }
1147         if (qeth_setup_channel(&card->read))
1148                 goto out_ip;
1149         if (qeth_setup_channel(&card->write))
1150                 goto out_channel;
1151         card->options.layer2 = -1;
1152         card->qeth_service_level.seq_print = qeth_core_sl_print;
1153         register_service_level(&card->qeth_service_level);
1154         return card;
1155
1156 out_channel:
1157         qeth_clean_channel(&card->read);
1158 out_ip:
1159         kfree(card->ip_tbd_list);
1160 out_card:
1161         kfree(card);
1162 out:
1163         return NULL;
1164 }
1165
1166 static int qeth_determine_card_type(struct qeth_card *card)
1167 {
1168         int i = 0;
1169
1170         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1171
1172         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1173         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1174         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1175                 if ((CARD_RDEV(card)->id.dev_type ==
1176                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1177                     (CARD_RDEV(card)->id.dev_model ==
1178                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1179                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1180                         card->qdio.no_out_queues =
1181                                 known_devices[i][QETH_QUEUE_NO_IND];
1182                         card->info.is_multicast_different =
1183                                 known_devices[i][QETH_MULTICAST_IND];
1184                         qeth_get_channel_path_desc(card);
1185                         return 0;
1186                 }
1187                 i++;
1188         }
1189         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1190         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1191                 "unknown type\n");
1192         return -ENOENT;
1193 }
1194
1195 static int qeth_clear_channel(struct qeth_channel *channel)
1196 {
1197         unsigned long flags;
1198         struct qeth_card *card;
1199         int rc;
1200
1201         card = CARD_FROM_CDEV(channel->ccwdev);
1202         QETH_CARD_TEXT(card, 3, "clearch");
1203         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1204         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1205         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1206
1207         if (rc)
1208                 return rc;
1209         rc = wait_event_interruptible_timeout(card->wait_q,
1210                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1211         if (rc == -ERESTARTSYS)
1212                 return rc;
1213         if (channel->state != CH_STATE_STOPPED)
1214                 return -ETIME;
1215         channel->state = CH_STATE_DOWN;
1216         return 0;
1217 }
1218
1219 static int qeth_halt_channel(struct qeth_channel *channel)
1220 {
1221         unsigned long flags;
1222         struct qeth_card *card;
1223         int rc;
1224
1225         card = CARD_FROM_CDEV(channel->ccwdev);
1226         QETH_CARD_TEXT(card, 3, "haltch");
1227         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1228         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1229         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1230
1231         if (rc)
1232                 return rc;
1233         rc = wait_event_interruptible_timeout(card->wait_q,
1234                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1235         if (rc == -ERESTARTSYS)
1236                 return rc;
1237         if (channel->state != CH_STATE_HALTED)
1238                 return -ETIME;
1239         return 0;
1240 }
1241
1242 static int qeth_halt_channels(struct qeth_card *card)
1243 {
1244         int rc1 = 0, rc2 = 0, rc3 = 0;
1245
1246         QETH_CARD_TEXT(card, 3, "haltchs");
1247         rc1 = qeth_halt_channel(&card->read);
1248         rc2 = qeth_halt_channel(&card->write);
1249         rc3 = qeth_halt_channel(&card->data);
1250         if (rc1)
1251                 return rc1;
1252         if (rc2)
1253                 return rc2;
1254         return rc3;
1255 }
1256
1257 static int qeth_clear_channels(struct qeth_card *card)
1258 {
1259         int rc1 = 0, rc2 = 0, rc3 = 0;
1260
1261         QETH_CARD_TEXT(card, 3, "clearchs");
1262         rc1 = qeth_clear_channel(&card->read);
1263         rc2 = qeth_clear_channel(&card->write);
1264         rc3 = qeth_clear_channel(&card->data);
1265         if (rc1)
1266                 return rc1;
1267         if (rc2)
1268                 return rc2;
1269         return rc3;
1270 }
1271
1272 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1273 {
1274         int rc = 0;
1275
1276         QETH_CARD_TEXT(card, 3, "clhacrd");
1277
1278         if (halt)
1279                 rc = qeth_halt_channels(card);
1280         if (rc)
1281                 return rc;
1282         return qeth_clear_channels(card);
1283 }
1284
1285 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1286 {
1287         int rc = 0;
1288
1289         QETH_CARD_TEXT(card, 3, "qdioclr");
1290         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1291                 QETH_QDIO_CLEANING)) {
1292         case QETH_QDIO_ESTABLISHED:
1293                 if (card->info.type == QETH_CARD_TYPE_IQD)
1294                         rc = qdio_shutdown(CARD_DDEV(card),
1295                                 QDIO_FLAG_CLEANUP_USING_HALT);
1296                 else
1297                         rc = qdio_shutdown(CARD_DDEV(card),
1298                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1299                 if (rc)
1300                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1301                 qdio_free(CARD_DDEV(card));
1302                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1303                 break;
1304         case QETH_QDIO_CLEANING:
1305                 return rc;
1306         default:
1307                 break;
1308         }
1309         rc = qeth_clear_halt_card(card, use_halt);
1310         if (rc)
1311                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1312         card->state = CARD_STATE_DOWN;
1313         return rc;
1314 }
1315 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1316
1317 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1318                                int *length)
1319 {
1320         struct ciw *ciw;
1321         char *rcd_buf;
1322         int ret;
1323         struct qeth_channel *channel = &card->data;
1324         unsigned long flags;
1325
1326         /*
1327          * scan for RCD command in extended SenseID data
1328          */
1329         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1330         if (!ciw || ciw->cmd == 0)
1331                 return -EOPNOTSUPP;
1332         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1333         if (!rcd_buf)
1334                 return -ENOMEM;
1335
1336         channel->ccw.cmd_code = ciw->cmd;
1337         channel->ccw.cda = (__u32) __pa(rcd_buf);
1338         channel->ccw.count = ciw->count;
1339         channel->ccw.flags = CCW_FLAG_SLI;
1340         channel->state = CH_STATE_RCD;
1341         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1342         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1343                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1344                                        QETH_RCD_TIMEOUT);
1345         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1346         if (!ret)
1347                 wait_event(card->wait_q,
1348                            (channel->state == CH_STATE_RCD_DONE ||
1349                             channel->state == CH_STATE_DOWN));
1350         if (channel->state == CH_STATE_DOWN)
1351                 ret = -EIO;
1352         else
1353                 channel->state = CH_STATE_DOWN;
1354         if (ret) {
1355                 kfree(rcd_buf);
1356                 *buffer = NULL;
1357                 *length = 0;
1358         } else {
1359                 *length = ciw->count;
1360                 *buffer = rcd_buf;
1361         }
1362         return ret;
1363 }
1364
1365 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1366 {
1367         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1368         card->info.chpid = prcd[30];
1369         card->info.unit_addr2 = prcd[31];
1370         card->info.cula = prcd[63];
1371         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1372                                (prcd[0x11] == _ascebc['M']));
1373 }
1374
1375 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1376 {
1377         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1378
1379         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1380                 card->info.blkt.time_total = 250;
1381                 card->info.blkt.inter_packet = 5;
1382                 card->info.blkt.inter_packet_jumbo = 15;
1383         } else {
1384                 card->info.blkt.time_total = 0;
1385                 card->info.blkt.inter_packet = 0;
1386                 card->info.blkt.inter_packet_jumbo = 0;
1387         }
1388 }
1389
1390 static void qeth_init_tokens(struct qeth_card *card)
1391 {
1392         card->token.issuer_rm_w = 0x00010103UL;
1393         card->token.cm_filter_w = 0x00010108UL;
1394         card->token.cm_connection_w = 0x0001010aUL;
1395         card->token.ulp_filter_w = 0x0001010bUL;
1396         card->token.ulp_connection_w = 0x0001010dUL;
1397 }
1398
1399 static void qeth_init_func_level(struct qeth_card *card)
1400 {
1401         switch (card->info.type) {
1402         case QETH_CARD_TYPE_IQD:
1403                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1404                 break;
1405         case QETH_CARD_TYPE_OSD:
1406         case QETH_CARD_TYPE_OSN:
1407                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1408                 break;
1409         default:
1410                 break;
1411         }
1412 }
1413
1414 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1415                 void (*idx_reply_cb)(struct qeth_channel *,
1416                         struct qeth_cmd_buffer *))
1417 {
1418         struct qeth_cmd_buffer *iob;
1419         unsigned long flags;
1420         int rc;
1421         struct qeth_card *card;
1422
1423         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1424         card = CARD_FROM_CDEV(channel->ccwdev);
1425         iob = qeth_get_buffer(channel);
1426         iob->callback = idx_reply_cb;
1427         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1428         channel->ccw.count = QETH_BUFSIZE;
1429         channel->ccw.cda = (__u32) __pa(iob->data);
1430
1431         wait_event(card->wait_q,
1432                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1433         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1434         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1435         rc = ccw_device_start(channel->ccwdev,
1436                               &channel->ccw, (addr_t) iob, 0, 0);
1437         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1438
1439         if (rc) {
1440                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1441                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1442                 atomic_set(&channel->irq_pending, 0);
1443                 wake_up(&card->wait_q);
1444                 return rc;
1445         }
1446         rc = wait_event_interruptible_timeout(card->wait_q,
1447                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1448         if (rc == -ERESTARTSYS)
1449                 return rc;
1450         if (channel->state != CH_STATE_UP) {
1451                 rc = -ETIME;
1452                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1453                 qeth_clear_cmd_buffers(channel);
1454         } else
1455                 rc = 0;
1456         return rc;
1457 }
1458
1459 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1460                 void (*idx_reply_cb)(struct qeth_channel *,
1461                         struct qeth_cmd_buffer *))
1462 {
1463         struct qeth_card *card;
1464         struct qeth_cmd_buffer *iob;
1465         unsigned long flags;
1466         __u16 temp;
1467         __u8 tmp;
1468         int rc;
1469         struct ccw_dev_id temp_devid;
1470
1471         card = CARD_FROM_CDEV(channel->ccwdev);
1472
1473         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1474
1475         iob = qeth_get_buffer(channel);
1476         iob->callback = idx_reply_cb;
1477         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1478         channel->ccw.count = IDX_ACTIVATE_SIZE;
1479         channel->ccw.cda = (__u32) __pa(iob->data);
1480         if (channel == &card->write) {
1481                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1482                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1483                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1484                 card->seqno.trans_hdr++;
1485         } else {
1486                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1487                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1488                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1489         }
1490         tmp = ((__u8)card->info.portno) | 0x80;
1491         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1492         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1493                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1494         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1495                &card->info.func_level, sizeof(__u16));
1496         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1497         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1498         temp = (card->info.cula << 8) + card->info.unit_addr2;
1499         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1500
1501         wait_event(card->wait_q,
1502                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1503         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1504         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1505         rc = ccw_device_start(channel->ccwdev,
1506                               &channel->ccw, (addr_t) iob, 0, 0);
1507         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1508
1509         if (rc) {
1510                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1511                         rc);
1512                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1513                 atomic_set(&channel->irq_pending, 0);
1514                 wake_up(&card->wait_q);
1515                 return rc;
1516         }
1517         rc = wait_event_interruptible_timeout(card->wait_q,
1518                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1519         if (rc == -ERESTARTSYS)
1520                 return rc;
1521         if (channel->state != CH_STATE_ACTIVATING) {
1522                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1523                         " failed to recover an error on the device\n");
1524                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1525                         dev_name(&channel->ccwdev->dev));
1526                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1527                 qeth_clear_cmd_buffers(channel);
1528                 return -ETIME;
1529         }
1530         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1531 }
1532
1533 static int qeth_peer_func_level(int level)
1534 {
1535         if ((level & 0xff) == 8)
1536                 return (level & 0xff) + 0x400;
1537         if (((level >> 8) & 3) == 1)
1538                 return (level & 0xff) + 0x200;
1539         return level;
1540 }
1541
1542 static void qeth_idx_write_cb(struct qeth_channel *channel,
1543                 struct qeth_cmd_buffer *iob)
1544 {
1545         struct qeth_card *card;
1546         __u16 temp;
1547
1548         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1549
1550         if (channel->state == CH_STATE_DOWN) {
1551                 channel->state = CH_STATE_ACTIVATING;
1552                 goto out;
1553         }
1554         card = CARD_FROM_CDEV(channel->ccwdev);
1555
1556         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1557                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1558                         dev_err(&card->write.ccwdev->dev,
1559                                 "The adapter is used exclusively by another "
1560                                 "host\n");
1561                 else
1562                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1563                                 " negative reply\n",
1564                                 dev_name(&card->write.ccwdev->dev));
1565                 goto out;
1566         }
1567         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1568         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1569                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1570                         "function level mismatch (sent: 0x%x, received: "
1571                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1572                         card->info.func_level, temp);
1573                 goto out;
1574         }
1575         channel->state = CH_STATE_UP;
1576 out:
1577         qeth_release_buffer(channel, iob);
1578 }
1579
1580 static void qeth_idx_read_cb(struct qeth_channel *channel,
1581                 struct qeth_cmd_buffer *iob)
1582 {
1583         struct qeth_card *card;
1584         __u16 temp;
1585
1586         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1587         if (channel->state == CH_STATE_DOWN) {
1588                 channel->state = CH_STATE_ACTIVATING;
1589                 goto out;
1590         }
1591
1592         card = CARD_FROM_CDEV(channel->ccwdev);
1593         if (qeth_check_idx_response(card, iob->data))
1594                         goto out;
1595
1596         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1597                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1598                 case QETH_IDX_ACT_ERR_EXCL:
1599                         dev_err(&card->write.ccwdev->dev,
1600                                 "The adapter is used exclusively by another "
1601                                 "host\n");
1602                         break;
1603                 case QETH_IDX_ACT_ERR_AUTH:
1604                 case QETH_IDX_ACT_ERR_AUTH_USER:
1605                         dev_err(&card->read.ccwdev->dev,
1606                                 "Setting the device online failed because of "
1607                                 "insufficient authorization\n");
1608                         break;
1609                 default:
1610                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1611                                 " negative reply\n",
1612                                 dev_name(&card->read.ccwdev->dev));
1613                 }
1614                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1615                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1616                 goto out;
1617         }
1618
1619 /**
1620  *  * temporary fix for microcode bug
1621  *   * to revert it,replace OR by AND
1622  *    */
1623         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1624              (card->info.type == QETH_CARD_TYPE_OSD))
1625                 card->info.portname_required = 1;
1626
1627         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1628         if (temp != qeth_peer_func_level(card->info.func_level)) {
1629                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1630                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1631                         dev_name(&card->read.ccwdev->dev),
1632                         card->info.func_level, temp);
1633                 goto out;
1634         }
1635         memcpy(&card->token.issuer_rm_r,
1636                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1637                QETH_MPC_TOKEN_LENGTH);
1638         memcpy(&card->info.mcl_level[0],
1639                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1640         channel->state = CH_STATE_UP;
1641 out:
1642         qeth_release_buffer(channel, iob);
1643 }
1644
1645 void qeth_prepare_control_data(struct qeth_card *card, int len,
1646                 struct qeth_cmd_buffer *iob)
1647 {
1648         qeth_setup_ccw(&card->write, iob->data, len);
1649         iob->callback = qeth_release_buffer;
1650
1651         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1652                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1653         card->seqno.trans_hdr++;
1654         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1655                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1656         card->seqno.pdu_hdr++;
1657         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1658                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1659         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1660 }
1661 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1662
1663 int qeth_send_control_data(struct qeth_card *card, int len,
1664                 struct qeth_cmd_buffer *iob,
1665                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1666                         unsigned long),
1667                 void *reply_param)
1668 {
1669         int rc;
1670         unsigned long flags;
1671         struct qeth_reply *reply = NULL;
1672         unsigned long timeout, event_timeout;
1673         struct qeth_ipa_cmd *cmd;
1674
1675         QETH_CARD_TEXT(card, 2, "sendctl");
1676
1677         if (card->read_or_write_problem) {
1678                 qeth_release_buffer(iob->channel, iob);
1679                 return -EIO;
1680         }
1681         reply = qeth_alloc_reply(card);
1682         if (!reply) {
1683                 return -ENOMEM;
1684         }
1685         reply->callback = reply_cb;
1686         reply->param = reply_param;
1687         if (card->state == CARD_STATE_DOWN)
1688                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1689         else
1690                 reply->seqno = card->seqno.ipa++;
1691         init_waitqueue_head(&reply->wait_q);
1692         spin_lock_irqsave(&card->lock, flags);
1693         list_add_tail(&reply->list, &card->cmd_waiter_list);
1694         spin_unlock_irqrestore(&card->lock, flags);
1695         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1696
1697         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1698         qeth_prepare_control_data(card, len, iob);
1699
1700         if (IS_IPA(iob->data))
1701                 event_timeout = QETH_IPA_TIMEOUT;
1702         else
1703                 event_timeout = QETH_TIMEOUT;
1704         timeout = jiffies + event_timeout;
1705
1706         QETH_CARD_TEXT(card, 6, "noirqpnd");
1707         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1708         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1709                               (addr_t) iob, 0, 0);
1710         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1711         if (rc) {
1712                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1713                         "ccw_device_start rc = %i\n",
1714                         dev_name(&card->write.ccwdev->dev), rc);
1715                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1716                 spin_lock_irqsave(&card->lock, flags);
1717                 list_del_init(&reply->list);
1718                 qeth_put_reply(reply);
1719                 spin_unlock_irqrestore(&card->lock, flags);
1720                 qeth_release_buffer(iob->channel, iob);
1721                 atomic_set(&card->write.irq_pending, 0);
1722                 wake_up(&card->wait_q);
1723                 return rc;
1724         }
1725
1726         /* we have only one long running ipassist, since we can ensure
1727            process context of this command we can sleep */
1728         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1729         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1730             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1731                 if (!wait_event_timeout(reply->wait_q,
1732                     atomic_read(&reply->received), event_timeout))
1733                         goto time_err;
1734         } else {
1735                 while (!atomic_read(&reply->received)) {
1736                         if (time_after(jiffies, timeout))
1737                                 goto time_err;
1738                         cpu_relax();
1739                 };
1740         }
1741
1742         if (reply->rc == -EIO)
1743                 goto error;
1744         rc = reply->rc;
1745         qeth_put_reply(reply);
1746         return rc;
1747
1748 time_err:
1749         reply->rc = -ETIME;
1750         spin_lock_irqsave(&reply->card->lock, flags);
1751         list_del_init(&reply->list);
1752         spin_unlock_irqrestore(&reply->card->lock, flags);
1753         atomic_inc(&reply->received);
1754 error:
1755         atomic_set(&card->write.irq_pending, 0);
1756         qeth_release_buffer(iob->channel, iob);
1757         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
1758         rc = reply->rc;
1759         qeth_put_reply(reply);
1760         return rc;
1761 }
1762 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1763
1764 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1765                 unsigned long data)
1766 {
1767         struct qeth_cmd_buffer *iob;
1768
1769         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1770
1771         iob = (struct qeth_cmd_buffer *) data;
1772         memcpy(&card->token.cm_filter_r,
1773                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1774                QETH_MPC_TOKEN_LENGTH);
1775         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1776         return 0;
1777 }
1778
1779 static int qeth_cm_enable(struct qeth_card *card)
1780 {
1781         int rc;
1782         struct qeth_cmd_buffer *iob;
1783
1784         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1785
1786         iob = qeth_wait_for_buffer(&card->write);
1787         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1788         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1789                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1790         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1791                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1792
1793         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1794                                     qeth_cm_enable_cb, NULL);
1795         return rc;
1796 }
1797
1798 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1799                 unsigned long data)
1800 {
1801
1802         struct qeth_cmd_buffer *iob;
1803
1804         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1805
1806         iob = (struct qeth_cmd_buffer *) data;
1807         memcpy(&card->token.cm_connection_r,
1808                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1809                QETH_MPC_TOKEN_LENGTH);
1810         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1811         return 0;
1812 }
1813
1814 static int qeth_cm_setup(struct qeth_card *card)
1815 {
1816         int rc;
1817         struct qeth_cmd_buffer *iob;
1818
1819         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1820
1821         iob = qeth_wait_for_buffer(&card->write);
1822         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1823         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1824                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1825         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1826                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1827         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1828                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1829         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1830                                     qeth_cm_setup_cb, NULL);
1831         return rc;
1832
1833 }
1834
1835 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1836 {
1837         switch (card->info.type) {
1838         case QETH_CARD_TYPE_UNKNOWN:
1839                 return 1500;
1840         case QETH_CARD_TYPE_IQD:
1841                 return card->info.max_mtu;
1842         case QETH_CARD_TYPE_OSD:
1843                 switch (card->info.link_type) {
1844                 case QETH_LINK_TYPE_HSTR:
1845                 case QETH_LINK_TYPE_LANE_TR:
1846                         return 2000;
1847                 default:
1848                         return 1492;
1849                 }
1850         case QETH_CARD_TYPE_OSM:
1851         case QETH_CARD_TYPE_OSX:
1852                 return 1492;
1853         default:
1854                 return 1500;
1855         }
1856 }
1857
1858 static inline int qeth_get_mtu_outof_framesize(int framesize)
1859 {
1860         switch (framesize) {
1861         case 0x4000:
1862                 return 8192;
1863         case 0x6000:
1864                 return 16384;
1865         case 0xa000:
1866                 return 32768;
1867         case 0xffff:
1868                 return 57344;
1869         default:
1870                 return 0;
1871         }
1872 }
1873
1874 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1875 {
1876         switch (card->info.type) {
1877         case QETH_CARD_TYPE_OSD:
1878         case QETH_CARD_TYPE_OSM:
1879         case QETH_CARD_TYPE_OSX:
1880         case QETH_CARD_TYPE_IQD:
1881                 return ((mtu >= 576) &&
1882                         (mtu <= card->info.max_mtu));
1883         case QETH_CARD_TYPE_OSN:
1884         case QETH_CARD_TYPE_UNKNOWN:
1885         default:
1886                 return 1;
1887         }
1888 }
1889
1890 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1891                 unsigned long data)
1892 {
1893
1894         __u16 mtu, framesize;
1895         __u16 len;
1896         __u8 link_type;
1897         struct qeth_cmd_buffer *iob;
1898
1899         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1900
1901         iob = (struct qeth_cmd_buffer *) data;
1902         memcpy(&card->token.ulp_filter_r,
1903                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1904                QETH_MPC_TOKEN_LENGTH);
1905         if (card->info.type == QETH_CARD_TYPE_IQD) {
1906                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1907                 mtu = qeth_get_mtu_outof_framesize(framesize);
1908                 if (!mtu) {
1909                         iob->rc = -EINVAL;
1910                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1911                         return 0;
1912                 }
1913                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
1914                         /* frame size has changed */
1915                         if (card->dev &&
1916                             ((card->dev->mtu == card->info.initial_mtu) ||
1917                              (card->dev->mtu > mtu)))
1918                                 card->dev->mtu = mtu;
1919                         qeth_free_qdio_buffers(card);
1920                 }
1921                 card->info.initial_mtu = mtu;
1922                 card->info.max_mtu = mtu;
1923                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1924         } else {
1925                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1926                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
1927                         iob->data);
1928                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1929         }
1930
1931         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1932         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1933                 memcpy(&link_type,
1934                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1935                 card->info.link_type = link_type;
1936         } else
1937                 card->info.link_type = 0;
1938         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1939         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1940         return 0;
1941 }
1942
1943 static int qeth_ulp_enable(struct qeth_card *card)
1944 {
1945         int rc;
1946         char prot_type;
1947         struct qeth_cmd_buffer *iob;
1948
1949         /*FIXME: trace view callbacks*/
1950         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1951
1952         iob = qeth_wait_for_buffer(&card->write);
1953         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1954
1955         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1956                 (__u8) card->info.portno;
1957         if (card->options.layer2)
1958                 if (card->info.type == QETH_CARD_TYPE_OSN)
1959                         prot_type = QETH_PROT_OSN2;
1960                 else
1961                         prot_type = QETH_PROT_LAYER2;
1962         else
1963                 prot_type = QETH_PROT_TCPIP;
1964
1965         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1966         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1967                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1968         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1969                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1970         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1971                card->info.portname, 9);
1972         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1973                                     qeth_ulp_enable_cb, NULL);
1974         return rc;
1975
1976 }
1977
1978 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1979                 unsigned long data)
1980 {
1981         struct qeth_cmd_buffer *iob;
1982         int rc = 0;
1983
1984         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1985
1986         iob = (struct qeth_cmd_buffer *) data;
1987         memcpy(&card->token.ulp_connection_r,
1988                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1989                QETH_MPC_TOKEN_LENGTH);
1990         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1991                      3)) {
1992                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1993                 dev_err(&card->gdev->dev, "A connection could not be "
1994                         "established because of an OLM limit\n");
1995                 iob->rc = -EMLINK;
1996         }
1997         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1998         return rc;
1999 }
2000
2001 static int qeth_ulp_setup(struct qeth_card *card)
2002 {
2003         int rc;
2004         __u16 temp;
2005         struct qeth_cmd_buffer *iob;
2006         struct ccw_dev_id dev_id;
2007
2008         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2009
2010         iob = qeth_wait_for_buffer(&card->write);
2011         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2012
2013         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2014                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2015         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2016                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2017         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2018                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2019
2020         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2021         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2022         temp = (card->info.cula << 8) + card->info.unit_addr2;
2023         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2024         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2025                                     qeth_ulp_setup_cb, NULL);
2026         return rc;
2027 }
2028
2029 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2030 {
2031         int i, j;
2032
2033         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2034
2035         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2036                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2037                 return 0;
2038
2039         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2040                                   GFP_KERNEL);
2041         if (!card->qdio.in_q)
2042                 goto out_nomem;
2043         QETH_DBF_TEXT(SETUP, 2, "inq");
2044         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2045         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2046         /* give inbound qeth_qdio_buffers their qdio_buffers */
2047         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2048                 card->qdio.in_q->bufs[i].buffer =
2049                         &card->qdio.in_q->qdio_bufs[i];
2050         /* inbound buffer pool */
2051         if (qeth_alloc_buffer_pool(card))
2052                 goto out_freeinq;
2053         /* outbound */
2054         card->qdio.out_qs =
2055                 kmalloc(card->qdio.no_out_queues *
2056                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2057         if (!card->qdio.out_qs)
2058                 goto out_freepool;
2059         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2060                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2061                                                GFP_KERNEL);
2062                 if (!card->qdio.out_qs[i])
2063                         goto out_freeoutq;
2064                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2065                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2066                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2067                 card->qdio.out_qs[i]->queue_no = i;
2068                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2069                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2070                         card->qdio.out_qs[i]->bufs[j].buffer =
2071                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2072                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2073                                             skb_list);
2074                         lockdep_set_class(
2075                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2076                                 &qdio_out_skb_queue_key);
2077                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2078                 }
2079         }
2080         return 0;
2081
2082 out_freeoutq:
2083         while (i > 0)
2084                 kfree(card->qdio.out_qs[--i]);
2085         kfree(card->qdio.out_qs);
2086         card->qdio.out_qs = NULL;
2087 out_freepool:
2088         qeth_free_buffer_pool(card);
2089 out_freeinq:
2090         kfree(card->qdio.in_q);
2091         card->qdio.in_q = NULL;
2092 out_nomem:
2093         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2094         return -ENOMEM;
2095 }
2096
2097 static void qeth_create_qib_param_field(struct qeth_card *card,
2098                 char *param_field)
2099 {
2100
2101         param_field[0] = _ascebc['P'];
2102         param_field[1] = _ascebc['C'];
2103         param_field[2] = _ascebc['I'];
2104         param_field[3] = _ascebc['T'];
2105         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2106         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2107         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2108 }
2109
2110 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2111                 char *param_field)
2112 {
2113         param_field[16] = _ascebc['B'];
2114         param_field[17] = _ascebc['L'];
2115         param_field[18] = _ascebc['K'];
2116         param_field[19] = _ascebc['T'];
2117         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2118         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2119         *((unsigned int *) (&param_field[28])) =
2120                 card->info.blkt.inter_packet_jumbo;
2121 }
2122
2123 static int qeth_qdio_activate(struct qeth_card *card)
2124 {
2125         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2126         return qdio_activate(CARD_DDEV(card));
2127 }
2128
2129 static int qeth_dm_act(struct qeth_card *card)
2130 {
2131         int rc;
2132         struct qeth_cmd_buffer *iob;
2133
2134         QETH_DBF_TEXT(SETUP, 2, "dmact");
2135
2136         iob = qeth_wait_for_buffer(&card->write);
2137         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2138
2139         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2140                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2141         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2142                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2143         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2144         return rc;
2145 }
2146
2147 static int qeth_mpc_initialize(struct qeth_card *card)
2148 {
2149         int rc;
2150
2151         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2152
2153         rc = qeth_issue_next_read(card);
2154         if (rc) {
2155                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2156                 return rc;
2157         }
2158         rc = qeth_cm_enable(card);
2159         if (rc) {
2160                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2161                 goto out_qdio;
2162         }
2163         rc = qeth_cm_setup(card);
2164         if (rc) {
2165                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2166                 goto out_qdio;
2167         }
2168         rc = qeth_ulp_enable(card);
2169         if (rc) {
2170                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2171                 goto out_qdio;
2172         }
2173         rc = qeth_ulp_setup(card);
2174         if (rc) {
2175                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2176                 goto out_qdio;
2177         }
2178         rc = qeth_alloc_qdio_buffers(card);
2179         if (rc) {
2180                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2181                 goto out_qdio;
2182         }
2183         rc = qeth_qdio_establish(card);
2184         if (rc) {
2185                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2186                 qeth_free_qdio_buffers(card);
2187                 goto out_qdio;
2188         }
2189         rc = qeth_qdio_activate(card);
2190         if (rc) {
2191                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2192                 goto out_qdio;
2193         }
2194         rc = qeth_dm_act(card);
2195         if (rc) {
2196                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2197                 goto out_qdio;
2198         }
2199
2200         return 0;
2201 out_qdio:
2202         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2203         return rc;
2204 }
2205
2206 static void qeth_print_status_with_portname(struct qeth_card *card)
2207 {
2208         char dbf_text[15];
2209         int i;
2210
2211         sprintf(dbf_text, "%s", card->info.portname + 1);
2212         for (i = 0; i < 8; i++)
2213                 dbf_text[i] =
2214                         (char) _ebcasc[(__u8) dbf_text[i]];
2215         dbf_text[8] = 0;
2216         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2217                "with link type %s (portname: %s)\n",
2218                qeth_get_cardname(card),
2219                (card->info.mcl_level[0]) ? " (level: " : "",
2220                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2221                (card->info.mcl_level[0]) ? ")" : "",
2222                qeth_get_cardname_short(card),
2223                dbf_text);
2224
2225 }
2226
2227 static void qeth_print_status_no_portname(struct qeth_card *card)
2228 {
2229         if (card->info.portname[0])
2230                 dev_info(&card->gdev->dev, "Device is a%s "
2231                        "card%s%s%s\nwith link type %s "
2232                        "(no portname needed by interface).\n",
2233                        qeth_get_cardname(card),
2234                        (card->info.mcl_level[0]) ? " (level: " : "",
2235                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2236                        (card->info.mcl_level[0]) ? ")" : "",
2237                        qeth_get_cardname_short(card));
2238         else
2239                 dev_info(&card->gdev->dev, "Device is a%s "
2240                        "card%s%s%s\nwith link type %s.\n",
2241                        qeth_get_cardname(card),
2242                        (card->info.mcl_level[0]) ? " (level: " : "",
2243                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2244                        (card->info.mcl_level[0]) ? ")" : "",
2245                        qeth_get_cardname_short(card));
2246 }
2247
2248 void qeth_print_status_message(struct qeth_card *card)
2249 {
2250         switch (card->info.type) {
2251         case QETH_CARD_TYPE_OSD:
2252         case QETH_CARD_TYPE_OSM:
2253         case QETH_CARD_TYPE_OSX:
2254                 /* VM will use a non-zero first character
2255                  * to indicate a HiperSockets like reporting
2256                  * of the level OSA sets the first character to zero
2257                  * */
2258                 if (!card->info.mcl_level[0]) {
2259                         sprintf(card->info.mcl_level, "%02x%02x",
2260                                 card->info.mcl_level[2],
2261                                 card->info.mcl_level[3]);
2262
2263                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2264                         break;
2265                 }
2266                 /* fallthrough */
2267         case QETH_CARD_TYPE_IQD:
2268                 if ((card->info.guestlan) ||
2269                     (card->info.mcl_level[0] & 0x80)) {
2270                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2271                                 card->info.mcl_level[0]];
2272                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2273                                 card->info.mcl_level[1]];
2274                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2275                                 card->info.mcl_level[2]];
2276                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2277                                 card->info.mcl_level[3]];
2278                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2279                 }
2280                 break;
2281         default:
2282                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2283         }
2284         if (card->info.portname_required)
2285                 qeth_print_status_with_portname(card);
2286         else
2287                 qeth_print_status_no_portname(card);
2288 }
2289 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2290
2291 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2292 {
2293         struct qeth_buffer_pool_entry *entry;
2294
2295         QETH_CARD_TEXT(card, 5, "inwrklst");
2296
2297         list_for_each_entry(entry,
2298                             &card->qdio.init_pool.entry_list, init_list) {
2299                 qeth_put_buffer_pool_entry(card, entry);
2300         }
2301 }
2302
2303 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2304                 struct qeth_card *card)
2305 {
2306         struct list_head *plh;
2307         struct qeth_buffer_pool_entry *entry;
2308         int i, free;
2309         struct page *page;
2310
2311         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2312                 return NULL;
2313
2314         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2315                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2316                 free = 1;
2317                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2318                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2319                                 free = 0;
2320                                 break;
2321                         }
2322                 }
2323                 if (free) {
2324                         list_del_init(&entry->list);
2325                         return entry;
2326                 }
2327         }
2328
2329         /* no free buffer in pool so take first one and swap pages */
2330         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2331                         struct qeth_buffer_pool_entry, list);
2332         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2333                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2334                         page = alloc_page(GFP_ATOMIC);
2335                         if (!page) {
2336                                 return NULL;
2337                         } else {
2338                                 free_page((unsigned long)entry->elements[i]);
2339                                 entry->elements[i] = page_address(page);
2340                                 if (card->options.performance_stats)
2341                                         card->perf_stats.sg_alloc_page_rx++;
2342                         }
2343                 }
2344         }
2345         list_del_init(&entry->list);
2346         return entry;
2347 }
2348
2349 static int qeth_init_input_buffer(struct qeth_card *card,
2350                 struct qeth_qdio_buffer *buf)
2351 {
2352         struct qeth_buffer_pool_entry *pool_entry;
2353         int i;
2354
2355         pool_entry = qeth_find_free_buffer_pool_entry(card);
2356         if (!pool_entry)
2357                 return 1;
2358
2359         /*
2360          * since the buffer is accessed only from the input_tasklet
2361          * there shouldn't be a need to synchronize; also, since we use
2362          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2363          * buffers
2364          */
2365
2366         buf->pool_entry = pool_entry;
2367         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2368                 buf->buffer->element[i].length = PAGE_SIZE;
2369                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2370                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2371                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2372                 else
2373                         buf->buffer->element[i].flags = 0;
2374         }
2375         return 0;
2376 }
2377
2378 int qeth_init_qdio_queues(struct qeth_card *card)
2379 {
2380         int i, j;
2381         int rc;
2382
2383         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2384
2385         /* inbound queue */
2386         memset(card->qdio.in_q->qdio_bufs, 0,
2387                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2388         qeth_initialize_working_pool_list(card);
2389         /*give only as many buffers to hardware as we have buffer pool entries*/
2390         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2391                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2392         card->qdio.in_q->next_buf_to_init =
2393                 card->qdio.in_buf_pool.buf_count - 1;
2394         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2395                      card->qdio.in_buf_pool.buf_count - 1);
2396         if (rc) {
2397                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2398                 return rc;
2399         }
2400         /* outbound queue */
2401         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2402                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2403                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2404                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2405                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2406                                         &card->qdio.out_qs[i]->bufs[j]);
2407                 }
2408                 card->qdio.out_qs[i]->card = card;
2409                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2410                 card->qdio.out_qs[i]->do_pack = 0;
2411                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2412                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2413                 atomic_set(&card->qdio.out_qs[i]->state,
2414                            QETH_OUT_Q_UNLOCKED);
2415         }
2416         return 0;
2417 }
2418 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2419
2420 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2421 {
2422         switch (link_type) {
2423         case QETH_LINK_TYPE_HSTR:
2424                 return 2;
2425         default:
2426                 return 1;
2427         }
2428 }
2429
2430 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2431                 struct qeth_ipa_cmd *cmd, __u8 command,
2432                 enum qeth_prot_versions prot)
2433 {
2434         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2435         cmd->hdr.command = command;
2436         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2437         cmd->hdr.seqno = card->seqno.ipa;
2438         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2439         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2440         if (card->options.layer2)
2441                 cmd->hdr.prim_version_no = 2;
2442         else
2443                 cmd->hdr.prim_version_no = 1;
2444         cmd->hdr.param_count = 1;
2445         cmd->hdr.prot_version = prot;
2446         cmd->hdr.ipa_supported = 0;
2447         cmd->hdr.ipa_enabled = 0;
2448 }
2449
2450 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2451                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2452 {
2453         struct qeth_cmd_buffer *iob;
2454         struct qeth_ipa_cmd *cmd;
2455
2456         iob = qeth_wait_for_buffer(&card->write);
2457         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2458         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2459
2460         return iob;
2461 }
2462 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2463
2464 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2465                 char prot_type)
2466 {
2467         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2468         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2469         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2470                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2471 }
2472 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2473
2474 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2475                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2476                         unsigned long),
2477                 void *reply_param)
2478 {
2479         int rc;
2480         char prot_type;
2481
2482         QETH_CARD_TEXT(card, 4, "sendipa");
2483
2484         if (card->options.layer2)
2485                 if (card->info.type == QETH_CARD_TYPE_OSN)
2486                         prot_type = QETH_PROT_OSN2;
2487                 else
2488                         prot_type = QETH_PROT_LAYER2;
2489         else
2490                 prot_type = QETH_PROT_TCPIP;
2491         qeth_prepare_ipa_cmd(card, iob, prot_type);
2492         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2493                                                 iob, reply_cb, reply_param);
2494         if (rc == -ETIME) {
2495                 qeth_clear_ipacmd_list(card);
2496                 qeth_schedule_recovery(card);
2497         }
2498         return rc;
2499 }
2500 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2501
2502 int qeth_send_startlan(struct qeth_card *card)
2503 {
2504         int rc;
2505         struct qeth_cmd_buffer *iob;
2506
2507         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2508
2509         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2510         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2511         return rc;
2512 }
2513 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2514
2515 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2516                 struct qeth_reply *reply, unsigned long data)
2517 {
2518         struct qeth_ipa_cmd *cmd;
2519
2520         QETH_CARD_TEXT(card, 4, "defadpcb");
2521
2522         cmd = (struct qeth_ipa_cmd *) data;
2523         if (cmd->hdr.return_code == 0)
2524                 cmd->hdr.return_code =
2525                         cmd->data.setadapterparms.hdr.return_code;
2526         return 0;
2527 }
2528 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2529
2530 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2531                 struct qeth_reply *reply, unsigned long data)
2532 {
2533         struct qeth_ipa_cmd *cmd;
2534
2535         QETH_CARD_TEXT(card, 3, "quyadpcb");
2536
2537         cmd = (struct qeth_ipa_cmd *) data;
2538         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2539                 card->info.link_type =
2540                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2541                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2542         }
2543         card->options.adp.supported_funcs =
2544                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2545         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2546 }
2547
2548 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2549                 __u32 command, __u32 cmdlen)
2550 {
2551         struct qeth_cmd_buffer *iob;
2552         struct qeth_ipa_cmd *cmd;
2553
2554         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2555                                      QETH_PROT_IPV4);
2556         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2557         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2558         cmd->data.setadapterparms.hdr.command_code = command;
2559         cmd->data.setadapterparms.hdr.used_total = 1;
2560         cmd->data.setadapterparms.hdr.seq_no = 1;
2561
2562         return iob;
2563 }
2564 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2565
2566 int qeth_query_setadapterparms(struct qeth_card *card)
2567 {
2568         int rc;
2569         struct qeth_cmd_buffer *iob;
2570
2571         QETH_CARD_TEXT(card, 3, "queryadp");
2572         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2573                                    sizeof(struct qeth_ipacmd_setadpparms));
2574         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2575         return rc;
2576 }
2577 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2578
2579 static int qeth_query_ipassists_cb(struct qeth_card *card,
2580                 struct qeth_reply *reply, unsigned long data)
2581 {
2582         struct qeth_ipa_cmd *cmd;
2583
2584         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2585
2586         cmd = (struct qeth_ipa_cmd *) data;
2587         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2588                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2589                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2590         } else {
2591                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2592                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2593         }
2594         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2595         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
2596         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
2597         return 0;
2598 }
2599
2600 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2601 {
2602         int rc;
2603         struct qeth_cmd_buffer *iob;
2604
2605         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2606         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2607         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2608         return rc;
2609 }
2610 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2611
2612 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2613                 struct qeth_reply *reply, unsigned long data)
2614 {
2615         struct qeth_ipa_cmd *cmd;
2616         __u16 rc;
2617
2618         cmd = (struct qeth_ipa_cmd *)data;
2619         rc = cmd->hdr.return_code;
2620         if (rc)
2621                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2622         else
2623                 card->info.diagass_support = cmd->data.diagass.ext;
2624         return 0;
2625 }
2626
2627 static int qeth_query_setdiagass(struct qeth_card *card)
2628 {
2629         struct qeth_cmd_buffer *iob;
2630         struct qeth_ipa_cmd    *cmd;
2631
2632         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2633         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2634         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2635         cmd->data.diagass.subcmd_len = 16;
2636         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2637         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2638 }
2639
2640 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2641 {
2642         unsigned long info = get_zeroed_page(GFP_KERNEL);
2643         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2644         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2645         struct ccw_dev_id ccwid;
2646         int level, rc;
2647
2648         tid->chpid = card->info.chpid;
2649         ccw_device_get_id(CARD_RDEV(card), &ccwid);
2650         tid->ssid = ccwid.ssid;
2651         tid->devno = ccwid.devno;
2652         if (!info)
2653                 return;
2654
2655         rc = stsi(NULL, 0, 0, 0);
2656         if (rc == -ENOSYS)
2657                 level = rc;
2658         else
2659                 level = (((unsigned int) rc) >> 28);
2660
2661         if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
2662                 tid->lparnr = info222->lpar_number;
2663
2664         if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
2665                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2666                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2667         }
2668         free_page(info);
2669         return;
2670 }
2671
2672 static int qeth_hw_trap_cb(struct qeth_card *card,
2673                 struct qeth_reply *reply, unsigned long data)
2674 {
2675         struct qeth_ipa_cmd *cmd;
2676         __u16 rc;
2677
2678         cmd = (struct qeth_ipa_cmd *)data;
2679         rc = cmd->hdr.return_code;
2680         if (rc)
2681                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2682         return 0;
2683 }
2684
2685 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2686 {
2687         struct qeth_cmd_buffer *iob;
2688         struct qeth_ipa_cmd *cmd;
2689
2690         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
2691         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2692         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2693         cmd->data.diagass.subcmd_len = 80;
2694         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
2695         cmd->data.diagass.type = 1;
2696         cmd->data.diagass.action = action;
2697         switch (action) {
2698         case QETH_DIAGS_TRAP_ARM:
2699                 cmd->data.diagass.options = 0x0003;
2700                 cmd->data.diagass.ext = 0x00010000 +
2701                         sizeof(struct qeth_trap_id);
2702                 qeth_get_trap_id(card,
2703                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
2704                 break;
2705         case QETH_DIAGS_TRAP_DISARM:
2706                 cmd->data.diagass.options = 0x0001;
2707                 break;
2708         case QETH_DIAGS_TRAP_CAPTURE:
2709                 break;
2710         }
2711         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
2712 }
2713 EXPORT_SYMBOL_GPL(qeth_hw_trap);
2714
2715 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2716                 unsigned int qdio_error, const char *dbftext)
2717 {
2718         if (qdio_error) {
2719                 QETH_CARD_TEXT(card, 2, dbftext);
2720                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2721                                buf->element[15].flags & 0xff);
2722                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2723                                buf->element[14].flags & 0xff);
2724                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2725                 if ((buf->element[15].flags & 0xff) == 0x12) {
2726                         card->stats.rx_dropped++;
2727                         return 0;
2728                 } else
2729                         return 1;
2730         }
2731         return 0;
2732 }
2733 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2734
2735 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2736 {
2737         struct qeth_qdio_q *queue = card->qdio.in_q;
2738         int count;
2739         int i;
2740         int rc;
2741         int newcount = 0;
2742
2743         count = (index < queue->next_buf_to_init)?
2744                 card->qdio.in_buf_pool.buf_count -
2745                 (queue->next_buf_to_init - index) :
2746                 card->qdio.in_buf_pool.buf_count -
2747                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2748         /* only requeue at a certain threshold to avoid SIGAs */
2749         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2750                 for (i = queue->next_buf_to_init;
2751                      i < queue->next_buf_to_init + count; ++i) {
2752                         if (qeth_init_input_buffer(card,
2753                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2754                                 break;
2755                         } else {
2756                                 newcount++;
2757                         }
2758                 }
2759
2760                 if (newcount < count) {
2761                         /* we are in memory shortage so we switch back to
2762                            traditional skb allocation and drop packages */
2763                         atomic_set(&card->force_alloc_skb, 3);
2764                         count = newcount;
2765                 } else {
2766                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2767                 }
2768
2769                 /*
2770                  * according to old code it should be avoided to requeue all
2771                  * 128 buffers in order to benefit from PCI avoidance.
2772                  * this function keeps at least one buffer (the buffer at
2773                  * 'index') un-requeued -> this buffer is the first buffer that
2774                  * will be requeued the next time
2775                  */
2776                 if (card->options.performance_stats) {
2777                         card->perf_stats.inbound_do_qdio_cnt++;
2778                         card->perf_stats.inbound_do_qdio_start_time =
2779                                 qeth_get_micros();
2780                 }
2781                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2782                              queue->next_buf_to_init, count);
2783                 if (card->options.performance_stats)
2784                         card->perf_stats.inbound_do_qdio_time +=
2785                                 qeth_get_micros() -
2786                                 card->perf_stats.inbound_do_qdio_start_time;
2787                 if (rc) {
2788                         dev_warn(&card->gdev->dev,
2789                                 "QDIO reported an error, rc=%i\n", rc);
2790                         QETH_CARD_TEXT(card, 2, "qinberr");
2791                 }
2792                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2793                                           QDIO_MAX_BUFFERS_PER_Q;
2794         }
2795 }
2796 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2797
2798 static int qeth_handle_send_error(struct qeth_card *card,
2799                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2800 {
2801         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2802
2803         QETH_CARD_TEXT(card, 6, "hdsnderr");
2804         if (card->info.type == QETH_CARD_TYPE_IQD) {
2805                 if (sbalf15 == 0) {
2806                         qdio_err = 0;
2807                 } else {
2808                         qdio_err = 1;
2809                 }
2810         }
2811         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2812
2813         if (!qdio_err)
2814                 return QETH_SEND_ERROR_NONE;
2815
2816         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2817                 return QETH_SEND_ERROR_RETRY;
2818
2819         QETH_CARD_TEXT(card, 1, "lnkfail");
2820         QETH_CARD_TEXT_(card, 1, "%04x %02x",
2821                        (u16)qdio_err, (u8)sbalf15);
2822         return QETH_SEND_ERROR_LINK_FAILURE;
2823 }
2824
2825 /*
2826  * Switched to packing state if the number of used buffers on a queue
2827  * reaches a certain limit.
2828  */
2829 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2830 {
2831         if (!queue->do_pack) {
2832                 if (atomic_read(&queue->used_buffers)
2833                     >= QETH_HIGH_WATERMARK_PACK){
2834                         /* switch non-PACKING -> PACKING */
2835                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
2836                         if (queue->card->options.performance_stats)
2837                                 queue->card->perf_stats.sc_dp_p++;
2838                         queue->do_pack = 1;
2839                 }
2840         }
2841 }
2842
2843 /*
2844  * Switches from packing to non-packing mode. If there is a packing
2845  * buffer on the queue this buffer will be prepared to be flushed.
2846  * In that case 1 is returned to inform the caller. If no buffer
2847  * has to be flushed, zero is returned.
2848  */
2849 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2850 {
2851         struct qeth_qdio_out_buffer *buffer;
2852         int flush_count = 0;
2853
2854         if (queue->do_pack) {
2855                 if (atomic_read(&queue->used_buffers)
2856                     <= QETH_LOW_WATERMARK_PACK) {
2857                         /* switch PACKING -> non-PACKING */
2858                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
2859                         if (queue->card->options.performance_stats)
2860                                 queue->card->perf_stats.sc_p_dp++;
2861                         queue->do_pack = 0;
2862                         /* flush packing buffers */
2863                         buffer = &queue->bufs[queue->next_buf_to_fill];
2864                         if ((atomic_read(&buffer->state) ==
2865                                                 QETH_QDIO_BUF_EMPTY) &&
2866                             (buffer->next_element_to_fill > 0)) {
2867                                 atomic_set(&buffer->state,
2868                                                 QETH_QDIO_BUF_PRIMED);
2869                                 flush_count++;
2870                                 queue->next_buf_to_fill =
2871                                         (queue->next_buf_to_fill + 1) %
2872                                         QDIO_MAX_BUFFERS_PER_Q;
2873                         }
2874                 }
2875         }
2876         return flush_count;
2877 }
2878
2879 /*
2880  * Called to flush a packing buffer if no more pci flags are on the queue.
2881  * Checks if there is a packing buffer and prepares it to be flushed.
2882  * In that case returns 1, otherwise zero.
2883  */
2884 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2885 {
2886         struct qeth_qdio_out_buffer *buffer;
2887
2888         buffer = &queue->bufs[queue->next_buf_to_fill];
2889         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2890            (buffer->next_element_to_fill > 0)) {
2891                 /* it's a packing buffer */
2892                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2893                 queue->next_buf_to_fill =
2894                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2895                 return 1;
2896         }
2897         return 0;
2898 }
2899
2900 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2901                                int count)
2902 {
2903         struct qeth_qdio_out_buffer *buf;
2904         int rc;
2905         int i;
2906         unsigned int qdio_flags;
2907
2908         for (i = index; i < index + count; ++i) {
2909                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2910                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2911                                 SBAL_FLAGS_LAST_ENTRY;
2912
2913                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2914                         continue;
2915
2916                 if (!queue->do_pack) {
2917                         if ((atomic_read(&queue->used_buffers) >=
2918                                 (QETH_HIGH_WATERMARK_PACK -
2919                                  QETH_WATERMARK_PACK_FUZZ)) &&
2920                             !atomic_read(&queue->set_pci_flags_count)) {
2921                                 /* it's likely that we'll go to packing
2922                                  * mode soon */
2923                                 atomic_inc(&queue->set_pci_flags_count);
2924                                 buf->buffer->element[0].flags |= 0x40;
2925                         }
2926                 } else {
2927                         if (!atomic_read(&queue->set_pci_flags_count)) {
2928                                 /*
2929                                  * there's no outstanding PCI any more, so we
2930                                  * have to request a PCI to be sure the the PCI
2931                                  * will wake at some time in the future then we
2932                                  * can flush packed buffers that might still be
2933                                  * hanging around, which can happen if no
2934                                  * further send was requested by the stack
2935                                  */
2936                                 atomic_inc(&queue->set_pci_flags_count);
2937                                 buf->buffer->element[0].flags |= 0x40;
2938                         }
2939                 }
2940         }
2941
2942         queue->card->dev->trans_start = jiffies;
2943         if (queue->card->options.performance_stats) {
2944                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2945                 queue->card->perf_stats.outbound_do_qdio_start_time =
2946                         qeth_get_micros();
2947         }
2948         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2949         if (atomic_read(&queue->set_pci_flags_count))
2950                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2951         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2952                      queue->queue_no, index, count);
2953         if (queue->card->options.performance_stats)
2954                 queue->card->perf_stats.outbound_do_qdio_time +=
2955                         qeth_get_micros() -
2956                         queue->card->perf_stats.outbound_do_qdio_start_time;
2957         atomic_add(count, &queue->used_buffers);
2958         if (rc) {
2959                 queue->card->stats.tx_errors += count;
2960                 /* ignore temporary SIGA errors without busy condition */
2961                 if (rc == QDIO_ERROR_SIGA_TARGET)
2962                         return;
2963                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2964                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2965
2966                 /* this must not happen under normal circumstances. if it
2967                  * happens something is really wrong -> recover */
2968                 qeth_schedule_recovery(queue->card);
2969                 return;
2970         }
2971         if (queue->card->options.performance_stats)
2972                 queue->card->perf_stats.bufs_sent += count;
2973 }
2974
2975 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2976 {
2977         int index;
2978         int flush_cnt = 0;
2979         int q_was_packing = 0;
2980
2981         /*
2982          * check if weed have to switch to non-packing mode or if
2983          * we have to get a pci flag out on the queue
2984          */
2985         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2986             !atomic_read(&queue->set_pci_flags_count)) {
2987                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2988                                 QETH_OUT_Q_UNLOCKED) {
2989                         /*
2990                          * If we get in here, there was no action in
2991                          * do_send_packet. So, we check if there is a
2992                          * packing buffer to be flushed here.
2993                          */
2994                         netif_stop_queue(queue->card->dev);
2995                         index = queue->next_buf_to_fill;
2996                         q_was_packing = queue->do_pack;
2997                         /* queue->do_pack may change */
2998                         barrier();
2999                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3000                         if (!flush_cnt &&
3001                             !atomic_read(&queue->set_pci_flags_count))
3002                                 flush_cnt +=
3003                                         qeth_flush_buffers_on_no_pci(queue);
3004                         if (queue->card->options.performance_stats &&
3005                             q_was_packing)
3006                                 queue->card->perf_stats.bufs_sent_pack +=
3007                                         flush_cnt;
3008                         if (flush_cnt)
3009                                 qeth_flush_buffers(queue, index, flush_cnt);
3010                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3011                 }
3012         }
3013 }
3014
3015 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3016                 unsigned long card_ptr)
3017 {
3018         struct qeth_card *card = (struct qeth_card *)card_ptr;
3019
3020         if (card->dev && (card->dev->flags & IFF_UP))
3021                 napi_schedule(&card->napi);
3022 }
3023 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3024
3025 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3026                 unsigned int queue, int first_element, int count,
3027                 unsigned long card_ptr)
3028 {
3029         struct qeth_card *card = (struct qeth_card *)card_ptr;
3030
3031         if (qdio_err)
3032                 qeth_schedule_recovery(card);
3033 }
3034 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3035
3036 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3037                 unsigned int qdio_error, int __queue, int first_element,
3038                 int count, unsigned long card_ptr)
3039 {
3040         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3041         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3042         struct qeth_qdio_out_buffer *buffer;
3043         int i;
3044
3045         QETH_CARD_TEXT(card, 6, "qdouhdl");
3046         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3047                 QETH_CARD_TEXT(card, 2, "achkcond");
3048                 netif_stop_queue(card->dev);
3049                 qeth_schedule_recovery(card);
3050                 return;
3051         }
3052         if (card->options.performance_stats) {
3053                 card->perf_stats.outbound_handler_cnt++;
3054                 card->perf_stats.outbound_handler_start_time =
3055                         qeth_get_micros();
3056         }
3057         for (i = first_element; i < (first_element + count); ++i) {
3058                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
3059                 qeth_handle_send_error(card, buffer, qdio_error);
3060                 qeth_clear_output_buffer(queue, buffer);
3061         }
3062         atomic_sub(count, &queue->used_buffers);
3063         /* check if we need to do something on this outbound queue */
3064         if (card->info.type != QETH_CARD_TYPE_IQD)
3065                 qeth_check_outbound_queue(queue);
3066
3067         netif_wake_queue(queue->card->dev);
3068         if (card->options.performance_stats)
3069                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3070                         card->perf_stats.outbound_handler_start_time;
3071 }
3072 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3073
3074 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3075                         int ipv, int cast_type)
3076 {
3077         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3078                      card->info.type == QETH_CARD_TYPE_OSX))
3079                 return card->qdio.default_out_queue;
3080         switch (card->qdio.no_out_queues) {
3081         case 4:
3082                 if (cast_type && card->info.is_multicast_different)
3083                         return card->info.is_multicast_different &
3084                                 (card->qdio.no_out_queues - 1);
3085                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3086                         const u8 tos = ip_hdr(skb)->tos;
3087
3088                         if (card->qdio.do_prio_queueing ==
3089                                 QETH_PRIO_Q_ING_TOS) {
3090                                 if (tos & IP_TOS_NOTIMPORTANT)
3091                                         return 3;
3092                                 if (tos & IP_TOS_HIGHRELIABILITY)
3093                                         return 2;
3094                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3095                                         return 1;
3096                                 if (tos & IP_TOS_LOWDELAY)
3097                                         return 0;
3098                         }
3099                         if (card->qdio.do_prio_queueing ==
3100                                 QETH_PRIO_Q_ING_PREC)
3101                                 return 3 - (tos >> 6);
3102                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3103                         /* TODO: IPv6!!! */
3104                 }
3105                 return card->qdio.default_out_queue;
3106         case 1: /* fallthrough for single-out-queue 1920-device */
3107         default:
3108                 return card->qdio.default_out_queue;
3109         }
3110 }
3111 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3112
3113 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3114                      struct sk_buff *skb, int elems)
3115 {
3116         int dlen = skb->len - skb->data_len;
3117         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3118                 PFN_DOWN((unsigned long)skb->data);
3119
3120         elements_needed += skb_shinfo(skb)->nr_frags;
3121         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3122                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3123                         "(Number=%d / Length=%d). Discarded.\n",
3124                         (elements_needed+elems), skb->len);
3125                 return 0;
3126         }
3127         return elements_needed;
3128 }
3129 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3130
3131 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3132 {
3133         int hroom, inpage, rest;
3134
3135         if (((unsigned long)skb->data & PAGE_MASK) !=
3136             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3137                 hroom = skb_headroom(skb);
3138                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3139                 rest = len - inpage;
3140                 if (rest > hroom)
3141                         return 1;
3142                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3143                 skb->data -= rest;
3144                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3145         }
3146         return 0;
3147 }
3148 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3149
3150 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3151         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3152         int offset)
3153 {
3154         int length = skb->len - skb->data_len;
3155         int length_here;
3156         int element;
3157         char *data;
3158         int first_lap, cnt;
3159         struct skb_frag_struct *frag;
3160
3161         element = *next_element_to_fill;
3162         data = skb->data;
3163         first_lap = (is_tso == 0 ? 1 : 0);
3164
3165         if (offset >= 0) {
3166                 data = skb->data + offset;
3167                 length -= offset;
3168                 first_lap = 0;
3169         }
3170
3171         while (length > 0) {
3172                 /* length_here is the remaining amount of data in this page */
3173                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3174                 if (length < length_here)
3175                         length_here = length;
3176
3177                 buffer->element[element].addr = data;
3178                 buffer->element[element].length = length_here;
3179                 length -= length_here;
3180                 if (!length) {
3181                         if (first_lap)
3182                                 if (skb_shinfo(skb)->nr_frags)
3183                                         buffer->element[element].flags =
3184                                                 SBAL_FLAGS_FIRST_FRAG;
3185                                 else
3186                                         buffer->element[element].flags = 0;
3187                         else
3188                                 buffer->element[element].flags =
3189                                     SBAL_FLAGS_MIDDLE_FRAG;
3190                 } else {
3191                         if (first_lap)
3192                                 buffer->element[element].flags =
3193                                     SBAL_FLAGS_FIRST_FRAG;
3194                         else
3195                                 buffer->element[element].flags =
3196                                     SBAL_FLAGS_MIDDLE_FRAG;
3197                 }
3198                 data += length_here;
3199                 element++;
3200                 first_lap = 0;
3201         }
3202
3203         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3204                 frag = &skb_shinfo(skb)->frags[cnt];
3205                 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3206                         + frag->page_offset;
3207                 buffer->element[element].length = frag->size;
3208                 buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG;
3209                 element++;
3210         }
3211
3212         if (buffer->element[element - 1].flags)
3213                 buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG;
3214         *next_element_to_fill = element;
3215 }
3216
3217 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3218                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3219                 struct qeth_hdr *hdr, int offset, int hd_len)
3220 {
3221         struct qdio_buffer *buffer;
3222         int flush_cnt = 0, hdr_len, large_send = 0;
3223
3224         buffer = buf->buffer;
3225         atomic_inc(&skb->users);
3226         skb_queue_tail(&buf->skb_list, skb);
3227
3228         /*check first on TSO ....*/
3229         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3230                 int element = buf->next_element_to_fill;
3231
3232                 hdr_len = sizeof(struct qeth_hdr_tso) +
3233                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3234                 /*fill first buffer entry only with header information */
3235                 buffer->element[element].addr = skb->data;
3236                 buffer->element[element].length = hdr_len;
3237                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3238                 buf->next_element_to_fill++;
3239                 skb->data += hdr_len;
3240                 skb->len  -= hdr_len;
3241                 large_send = 1;
3242         }
3243
3244         if (offset >= 0) {
3245                 int element = buf->next_element_to_fill;
3246                 buffer->element[element].addr = hdr;
3247                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3248                                                         hd_len;
3249                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3250                 buf->is_header[element] = 1;
3251                 buf->next_element_to_fill++;
3252         }
3253
3254         __qeth_fill_buffer(skb, buffer, large_send,
3255                 (int *)&buf->next_element_to_fill, offset);
3256
3257         if (!queue->do_pack) {
3258                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3259                 /* set state to PRIMED -> will be flushed */
3260                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3261                 flush_cnt = 1;
3262         } else {
3263                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3264                 if (queue->card->options.performance_stats)
3265                         queue->card->perf_stats.skbs_sent_pack++;
3266                 if (buf->next_element_to_fill >=
3267                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3268                         /*
3269                          * packed buffer if full -> set state PRIMED
3270                          * -> will be flushed
3271                          */
3272                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3273                         flush_cnt = 1;
3274                 }
3275         }
3276         return flush_cnt;
3277 }
3278
3279 int qeth_do_send_packet_fast(struct qeth_card *card,
3280                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3281                 struct qeth_hdr *hdr, int elements_needed,
3282                 int offset, int hd_len)
3283 {
3284         struct qeth_qdio_out_buffer *buffer;
3285         int index;
3286
3287         /* spin until we get the queue ... */
3288         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3289                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3290         /* ... now we've got the queue */
3291         index = queue->next_buf_to_fill;
3292         buffer = &queue->bufs[queue->next_buf_to_fill];
3293         /*
3294          * check if buffer is empty to make sure that we do not 'overtake'
3295          * ourselves and try to fill a buffer that is already primed
3296          */
3297         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3298                 goto out;
3299         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3300                                           QDIO_MAX_BUFFERS_PER_Q;
3301         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3302         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3303         qeth_flush_buffers(queue, index, 1);
3304         return 0;
3305 out:
3306         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3307         return -EBUSY;
3308 }
3309 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3310
3311 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3312                 struct sk_buff *skb, struct qeth_hdr *hdr,
3313                 int elements_needed)
3314 {
3315         struct qeth_qdio_out_buffer *buffer;
3316         int start_index;
3317         int flush_count = 0;
3318         int do_pack = 0;
3319         int tmp;
3320         int rc = 0;
3321
3322         /* spin until we get the queue ... */
3323         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3324                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3325         start_index = queue->next_buf_to_fill;
3326         buffer = &queue->bufs[queue->next_buf_to_fill];
3327         /*
3328          * check if buffer is empty to make sure that we do not 'overtake'
3329          * ourselves and try to fill a buffer that is already primed
3330          */
3331         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3332                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3333                 return -EBUSY;
3334         }
3335         /* check if we need to switch packing state of this queue */
3336         qeth_switch_to_packing_if_needed(queue);
3337         if (queue->do_pack) {
3338                 do_pack = 1;
3339                 /* does packet fit in current buffer? */
3340                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3341                     buffer->next_element_to_fill) < elements_needed) {
3342                         /* ... no -> set state PRIMED */
3343                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3344                         flush_count++;
3345                         queue->next_buf_to_fill =
3346                                 (queue->next_buf_to_fill + 1) %
3347                                 QDIO_MAX_BUFFERS_PER_Q;
3348                         buffer = &queue->bufs[queue->next_buf_to_fill];
3349                         /* we did a step forward, so check buffer state
3350                          * again */
3351                         if (atomic_read(&buffer->state) !=
3352                             QETH_QDIO_BUF_EMPTY) {
3353                                 qeth_flush_buffers(queue, start_index,
3354                                                            flush_count);
3355                                 atomic_set(&queue->state,
3356                                                 QETH_OUT_Q_UNLOCKED);
3357                                 return -EBUSY;
3358                         }
3359                 }
3360         }
3361         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3362         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3363                                   QDIO_MAX_BUFFERS_PER_Q;
3364         flush_count += tmp;
3365         if (flush_count)
3366                 qeth_flush_buffers(queue, start_index, flush_count);
3367         else if (!atomic_read(&queue->set_pci_flags_count))
3368                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3369         /*
3370          * queue->state will go from LOCKED -> UNLOCKED or from
3371          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3372          * (switch packing state or flush buffer to get another pci flag out).
3373          * In that case we will enter this loop
3374          */
3375         while (atomic_dec_return(&queue->state)) {
3376                 flush_count = 0;
3377                 start_index = queue->next_buf_to_fill;
3378                 /* check if we can go back to non-packing state */
3379                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3380                 /*
3381                  * check if we need to flush a packing buffer to get a pci
3382                  * flag out on the queue
3383                  */
3384                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3385                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3386                 if (flush_count)
3387                         qeth_flush_buffers(queue, start_index, flush_count);
3388         }
3389         /* at this point the queue is UNLOCKED again */
3390         if (queue->card->options.performance_stats && do_pack)
3391                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3392
3393         return rc;
3394 }
3395 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3396
3397 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3398                 struct qeth_reply *reply, unsigned long data)
3399 {
3400         struct qeth_ipa_cmd *cmd;
3401         struct qeth_ipacmd_setadpparms *setparms;
3402
3403         QETH_CARD_TEXT(card, 4, "prmadpcb");
3404
3405         cmd = (struct qeth_ipa_cmd *) data;
3406         setparms = &(cmd->data.setadapterparms);
3407
3408         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3409         if (cmd->hdr.return_code) {
3410                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3411                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3412         }
3413         card->info.promisc_mode = setparms->data.mode;
3414         return 0;
3415 }
3416
3417 void qeth_setadp_promisc_mode(struct qeth_card *card)
3418 {
3419         enum qeth_ipa_promisc_modes mode;
3420         struct net_device *dev = card->dev;
3421         struct qeth_cmd_buffer *iob;
3422         struct qeth_ipa_cmd *cmd;
3423
3424         QETH_CARD_TEXT(card, 4, "setprom");
3425
3426         if (((dev->flags & IFF_PROMISC) &&
3427              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3428             (!(dev->flags & IFF_PROMISC) &&
3429              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3430                 return;
3431         mode = SET_PROMISC_MODE_OFF;
3432         if (dev->flags & IFF_PROMISC)
3433                 mode = SET_PROMISC_MODE_ON;
3434         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3435
3436         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3437                         sizeof(struct qeth_ipacmd_setadpparms));
3438         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3439         cmd->data.setadapterparms.data.mode = mode;
3440         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3441 }
3442 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3443
3444 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3445 {
3446         struct qeth_card *card;
3447         char dbf_text[15];
3448
3449         card = dev->ml_priv;
3450
3451         QETH_CARD_TEXT(card, 4, "chgmtu");
3452         sprintf(dbf_text, "%8x", new_mtu);
3453         QETH_CARD_TEXT(card, 4, dbf_text);
3454
3455         if (new_mtu < 64)
3456                 return -EINVAL;
3457         if (new_mtu > 65535)
3458                 return -EINVAL;
3459         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3460             (!qeth_mtu_is_valid(card, new_mtu)))
3461                 return -EINVAL;
3462         dev->mtu = new_mtu;
3463         return 0;
3464 }
3465 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3466
3467 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3468 {
3469         struct qeth_card *card;
3470
3471         card = dev->ml_priv;
3472
3473         QETH_CARD_TEXT(card, 5, "getstat");
3474
3475         return &card->stats;
3476 }
3477 EXPORT_SYMBOL_GPL(qeth_get_stats);
3478
3479 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3480                 struct qeth_reply *reply, unsigned long data)
3481 {
3482         struct qeth_ipa_cmd *cmd;
3483
3484         QETH_CARD_TEXT(card, 4, "chgmaccb");
3485
3486         cmd = (struct qeth_ipa_cmd *) data;
3487         if (!card->options.layer2 ||
3488             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3489                 memcpy(card->dev->dev_addr,
3490                        &cmd->data.setadapterparms.data.change_addr.addr,
3491                        OSA_ADDR_LEN);
3492                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3493         }
3494         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3495         return 0;
3496 }
3497
3498 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3499 {
3500         int rc;
3501         struct qeth_cmd_buffer *iob;
3502         struct qeth_ipa_cmd *cmd;
3503
3504         QETH_CARD_TEXT(card, 4, "chgmac");
3505
3506         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3507                                    sizeof(struct qeth_ipacmd_setadpparms));
3508         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3509         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3510         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3511         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3512                card->dev->dev_addr, OSA_ADDR_LEN);
3513         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3514                                NULL);
3515         return rc;
3516 }
3517 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3518
3519 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3520                 struct qeth_reply *reply, unsigned long data)
3521 {
3522         struct qeth_ipa_cmd *cmd;
3523         struct qeth_set_access_ctrl *access_ctrl_req;
3524
3525         QETH_CARD_TEXT(card, 4, "setaccb");
3526
3527         cmd = (struct qeth_ipa_cmd *) data;
3528         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3529         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3530         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3531         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3532                 cmd->data.setadapterparms.hdr.return_code);
3533         switch (cmd->data.setadapterparms.hdr.return_code) {
3534         case SET_ACCESS_CTRL_RC_SUCCESS:
3535         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3536         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3537         {
3538                 card->options.isolation = access_ctrl_req->subcmd_code;
3539                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3540                         dev_info(&card->gdev->dev,
3541                             "QDIO data connection isolation is deactivated\n");
3542                 } else {
3543                         dev_info(&card->gdev->dev,
3544                             "QDIO data connection isolation is activated\n");
3545                 }
3546                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3547                         card->gdev->dev.kobj.name,
3548                         access_ctrl_req->subcmd_code,
3549                         cmd->data.setadapterparms.hdr.return_code);
3550                 break;
3551         }
3552         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3553         {
3554                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3555                         card->gdev->dev.kobj.name,
3556                         access_ctrl_req->subcmd_code,
3557                         cmd->data.setadapterparms.hdr.return_code);
3558                 dev_err(&card->gdev->dev, "Adapter does not "
3559                         "support QDIO data connection isolation\n");
3560
3561                 /* ensure isolation mode is "none" */
3562                 card->options.isolation = ISOLATION_MODE_NONE;
3563                 break;
3564         }
3565         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3566         {
3567                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3568                         card->gdev->dev.kobj.name,
3569                         access_ctrl_req->subcmd_code,
3570                         cmd->data.setadapterparms.hdr.return_code);
3571                 dev_err(&card->gdev->dev,
3572                         "Adapter is dedicated. "
3573                         "QDIO data connection isolation not supported\n");
3574
3575                 /* ensure isolation mode is "none" */
3576                 card->options.isolation = ISOLATION_MODE_NONE;
3577                 break;
3578         }
3579         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3580         {
3581                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3582                         card->gdev->dev.kobj.name,
3583                         access_ctrl_req->subcmd_code,
3584                         cmd->data.setadapterparms.hdr.return_code);
3585                 dev_err(&card->gdev->dev,
3586                         "TSO does not permit QDIO data connection isolation\n");
3587
3588                 /* ensure isolation mode is "none" */
3589                 card->options.isolation = ISOLATION_MODE_NONE;
3590                 break;
3591         }
3592         default:
3593         {
3594                 /* this should never happen */
3595                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3596                         "==UNKNOWN\n",
3597                         card->gdev->dev.kobj.name,
3598                         access_ctrl_req->subcmd_code,
3599                         cmd->data.setadapterparms.hdr.return_code);
3600
3601                 /* ensure isolation mode is "none" */
3602                 card->options.isolation = ISOLATION_MODE_NONE;
3603                 break;
3604         }
3605         }
3606         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3607         return 0;
3608 }
3609
3610 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3611                 enum qeth_ipa_isolation_modes isolation)
3612 {
3613         int rc;
3614         struct qeth_cmd_buffer *iob;
3615         struct qeth_ipa_cmd *cmd;
3616         struct qeth_set_access_ctrl *access_ctrl_req;
3617
3618         QETH_CARD_TEXT(card, 4, "setacctl");
3619
3620         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3621         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3622
3623         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3624                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3625                                    sizeof(struct qeth_set_access_ctrl));
3626         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3627         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3628         access_ctrl_req->subcmd_code = isolation;
3629
3630         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3631                                NULL);
3632         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3633         return rc;
3634 }
3635
3636 int qeth_set_access_ctrl_online(struct qeth_card *card)
3637 {
3638         int rc = 0;
3639
3640         QETH_CARD_TEXT(card, 4, "setactlo");
3641
3642         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3643              card->info.type == QETH_CARD_TYPE_OSX) &&
3644              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3645                 rc = qeth_setadpparms_set_access_ctrl(card,
3646                         card->options.isolation);
3647                 if (rc) {
3648                         QETH_DBF_MESSAGE(3,
3649                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3650                                 card->gdev->dev.kobj.name,
3651                                 rc);
3652                 }
3653         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3654                 card->options.isolation = ISOLATION_MODE_NONE;
3655
3656                 dev_err(&card->gdev->dev, "Adapter does not "
3657                         "support QDIO data connection isolation\n");
3658                 rc = -EOPNOTSUPP;
3659         }
3660         return rc;
3661 }
3662 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3663
3664 void qeth_tx_timeout(struct net_device *dev)
3665 {
3666         struct qeth_card *card;
3667
3668         card = dev->ml_priv;
3669         QETH_CARD_TEXT(card, 4, "txtimeo");
3670         card->stats.tx_errors++;
3671         qeth_schedule_recovery(card);
3672 }
3673 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3674
3675 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3676 {
3677         struct qeth_card *card = dev->ml_priv;
3678         int rc = 0;
3679
3680         switch (regnum) {
3681         case MII_BMCR: /* Basic mode control register */
3682                 rc = BMCR_FULLDPLX;
3683                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3684                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3685                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3686                         rc |= BMCR_SPEED100;
3687                 break;
3688         case MII_BMSR: /* Basic mode status register */
3689                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3690                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3691                      BMSR_100BASE4;
3692                 break;
3693         case MII_PHYSID1: /* PHYS ID 1 */
3694                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3695                      dev->dev_addr[2];
3696                 rc = (rc >> 5) & 0xFFFF;
3697                 break;
3698         case MII_PHYSID2: /* PHYS ID 2 */
3699                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3700                 break;
3701         case MII_ADVERTISE: /* Advertisement control reg */
3702                 rc = ADVERTISE_ALL;
3703                 break;
3704         case MII_LPA: /* Link partner ability reg */
3705                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3706                      LPA_100BASE4 | LPA_LPACK;
3707                 break;
3708         case MII_EXPANSION: /* Expansion register */
3709                 break;
3710         case MII_DCOUNTER: /* disconnect counter */
3711                 break;
3712         case MII_FCSCOUNTER: /* false carrier counter */
3713                 break;
3714         case MII_NWAYTEST: /* N-way auto-neg test register */
3715                 break;
3716         case MII_RERRCOUNTER: /* rx error counter */
3717                 rc = card->stats.rx_errors;
3718                 break;
3719         case MII_SREVISION: /* silicon revision */
3720                 break;
3721         case MII_RESV1: /* reserved 1 */
3722                 break;
3723         case MII_LBRERROR: /* loopback, rx, bypass error */
3724                 break;
3725         case MII_PHYADDR: /* physical address */
3726                 break;
3727         case MII_RESV2: /* reserved 2 */
3728                 break;
3729         case MII_TPISTATUS: /* TPI status for 10mbps */
3730                 break;
3731         case MII_NCONFIG: /* network interface config */
3732                 break;
3733         default:
3734                 break;
3735         }
3736         return rc;
3737 }
3738 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3739
3740 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3741                 struct qeth_cmd_buffer *iob, int len,
3742                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3743                         unsigned long),
3744                 void *reply_param)
3745 {
3746         u16 s1, s2;
3747
3748         QETH_CARD_TEXT(card, 4, "sendsnmp");
3749
3750         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3751         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3752                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3753         /* adjust PDU length fields in IPA_PDU_HEADER */
3754         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3755         s2 = (u32) len;
3756         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3757         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3758         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3759         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3760         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3761                                       reply_cb, reply_param);
3762 }
3763
3764 static int qeth_snmp_command_cb(struct qeth_card *card,
3765                 struct qeth_reply *reply, unsigned long sdata)
3766 {
3767         struct qeth_ipa_cmd *cmd;
3768         struct qeth_arp_query_info *qinfo;
3769         struct qeth_snmp_cmd *snmp;
3770         unsigned char *data;
3771         __u16 data_len;
3772
3773         QETH_CARD_TEXT(card, 3, "snpcmdcb");
3774
3775         cmd = (struct qeth_ipa_cmd *) sdata;
3776         data = (unsigned char *)((char *)cmd - reply->offset);
3777         qinfo = (struct qeth_arp_query_info *) reply->param;
3778         snmp = &cmd->data.setadapterparms.data.snmp;
3779
3780         if (cmd->hdr.return_code) {
3781                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3782                 return 0;
3783         }
3784         if (cmd->data.setadapterparms.hdr.return_code) {
3785                 cmd->hdr.return_code =
3786                         cmd->data.setadapterparms.hdr.return_code;
3787                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3788                 return 0;
3789         }
3790         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3791         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3792                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3793         else
3794                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3795
3796         /* check if there is enough room in userspace */
3797         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3798                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3799                 cmd->hdr.return_code = -ENOMEM;
3800                 return 0;
3801         }
3802         QETH_CARD_TEXT_(card, 4, "snore%i",
3803                        cmd->data.setadapterparms.hdr.used_total);
3804         QETH_CARD_TEXT_(card, 4, "sseqn%i",
3805                 cmd->data.setadapterparms.hdr.seq_no);
3806         /*copy entries to user buffer*/
3807         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3808                 memcpy(qinfo->udata + qinfo->udata_offset,
3809                        (char *)snmp,
3810                        data_len + offsetof(struct qeth_snmp_cmd, data));
3811                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3812         } else {
3813                 memcpy(qinfo->udata + qinfo->udata_offset,
3814                        (char *)&snmp->request, data_len);
3815         }
3816         qinfo->udata_offset += data_len;
3817         /* check if all replies received ... */
3818                 QETH_CARD_TEXT_(card, 4, "srtot%i",
3819                                cmd->data.setadapterparms.hdr.used_total);
3820                 QETH_CARD_TEXT_(card, 4, "srseq%i",
3821                                cmd->data.setadapterparms.hdr.seq_no);
3822         if (cmd->data.setadapterparms.hdr.seq_no <
3823             cmd->data.setadapterparms.hdr.used_total)
3824                 return 1;
3825         return 0;
3826 }
3827
3828 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3829 {
3830         struct qeth_cmd_buffer *iob;
3831         struct qeth_ipa_cmd *cmd;
3832         struct qeth_snmp_ureq *ureq;
3833         int req_len;
3834         struct qeth_arp_query_info qinfo = {0, };
3835         int rc = 0;
3836
3837         QETH_CARD_TEXT(card, 3, "snmpcmd");
3838
3839         if (card->info.guestlan)
3840                 return -EOPNOTSUPP;
3841
3842         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3843             (!card->options.layer2)) {
3844                 return -EOPNOTSUPP;
3845         }
3846         /* skip 4 bytes (data_len struct member) to get req_len */
3847         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3848                 return -EFAULT;
3849         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
3850         if (IS_ERR(ureq)) {
3851                 QETH_CARD_TEXT(card, 2, "snmpnome");
3852                 return PTR_ERR(ureq);
3853         }
3854         qinfo.udata_len = ureq->hdr.data_len;
3855         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3856         if (!qinfo.udata) {
3857                 kfree(ureq);
3858                 return -ENOMEM;
3859         }
3860         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3861
3862         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3863                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3864         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3865         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3866         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3867                                     qeth_snmp_command_cb, (void *)&qinfo);
3868         if (rc)
3869                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3870                            QETH_CARD_IFNAME(card), rc);
3871         else {
3872                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3873                         rc = -EFAULT;
3874         }
3875
3876         kfree(ureq);
3877         kfree(qinfo.udata);
3878         return rc;
3879 }
3880 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3881
3882 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3883 {
3884         switch (card->info.type) {
3885         case QETH_CARD_TYPE_IQD:
3886                 return 2;
3887         default:
3888                 return 0;
3889         }
3890 }
3891
3892 static void qeth_determine_capabilities(struct qeth_card *card)
3893 {
3894         int rc;
3895         int length;
3896         char *prcd;
3897         struct ccw_device *ddev;
3898         int ddev_offline = 0;
3899
3900         QETH_DBF_TEXT(SETUP, 2, "detcapab");
3901         ddev = CARD_DDEV(card);
3902         if (!ddev->online) {
3903                 ddev_offline = 1;
3904                 rc = ccw_device_set_online(ddev);
3905                 if (rc) {
3906                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3907                         goto out;
3908                 }
3909         }
3910
3911         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
3912         if (rc) {
3913                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
3914                         dev_name(&card->gdev->dev), rc);
3915                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3916                 goto out_offline;
3917         }
3918         qeth_configure_unitaddr(card, prcd);
3919         qeth_configure_blkt_default(card, prcd);
3920         kfree(prcd);
3921
3922         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
3923         if (rc)
3924                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3925
3926 out_offline:
3927         if (ddev_offline == 1)
3928                 ccw_device_set_offline(ddev);
3929 out:
3930         return;
3931 }
3932
3933 static int qeth_qdio_establish(struct qeth_card *card)
3934 {
3935         struct qdio_initialize init_data;
3936         char *qib_param_field;
3937         struct qdio_buffer **in_sbal_ptrs;
3938         struct qdio_buffer **out_sbal_ptrs;
3939         int i, j, k;
3940         int rc = 0;
3941
3942         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3943
3944         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3945                               GFP_KERNEL);
3946         if (!qib_param_field)
3947                 return -ENOMEM;
3948
3949         qeth_create_qib_param_field(card, qib_param_field);
3950         qeth_create_qib_param_field_blkt(card, qib_param_field);
3951
3952         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3953                                GFP_KERNEL);
3954         if (!in_sbal_ptrs) {
3955                 kfree(qib_param_field);
3956                 return -ENOMEM;
3957         }
3958         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3959                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3960                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3961
3962         out_sbal_ptrs =
3963                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3964                         sizeof(void *), GFP_KERNEL);
3965         if (!out_sbal_ptrs) {
3966                 kfree(in_sbal_ptrs);
3967                 kfree(qib_param_field);
3968                 return -ENOMEM;
3969         }
3970         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3971                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3972                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3973                                 card->qdio.out_qs[i]->bufs[j].buffer);
3974                 }
3975
3976         memset(&init_data, 0, sizeof(struct qdio_initialize));
3977         init_data.cdev                   = CARD_DDEV(card);
3978         init_data.q_format               = qeth_get_qdio_q_format(card);
3979         init_data.qib_param_field_format = 0;
3980         init_data.qib_param_field        = qib_param_field;
3981         init_data.no_input_qs            = 1;
3982         init_data.no_output_qs           = card->qdio.no_out_queues;
3983         init_data.input_handler          = card->discipline.input_handler;
3984         init_data.output_handler         = card->discipline.output_handler;
3985         init_data.queue_start_poll       = card->discipline.start_poll;
3986         init_data.int_parm               = (unsigned long) card;
3987         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3988         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3989         init_data.scan_threshold =
3990                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
3991
3992         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3993                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3994                 rc = qdio_allocate(&init_data);
3995                 if (rc) {
3996                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3997                         goto out;
3998                 }
3999                 rc = qdio_establish(&init_data);
4000                 if (rc) {
4001                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4002                         qdio_free(CARD_DDEV(card));
4003                 }
4004         }
4005 out:
4006         kfree(out_sbal_ptrs);
4007         kfree(in_sbal_ptrs);
4008         kfree(qib_param_field);
4009         return rc;
4010 }
4011
4012 static void qeth_core_free_card(struct qeth_card *card)
4013 {
4014
4015         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4016         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4017         qeth_clean_channel(&card->read);
4018         qeth_clean_channel(&card->write);
4019         if (card->dev)
4020                 free_netdev(card->dev);
4021         kfree(card->ip_tbd_list);
4022         qeth_free_qdio_buffers(card);
4023         unregister_service_level(&card->qeth_service_level);
4024         kfree(card);
4025 }
4026
4027 static struct ccw_device_id qeth_ids[] = {
4028         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4029                                         .driver_info = QETH_CARD_TYPE_OSD},
4030         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4031                                         .driver_info = QETH_CARD_TYPE_IQD},
4032         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4033                                         .driver_info = QETH_CARD_TYPE_OSN},
4034         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4035                                         .driver_info = QETH_CARD_TYPE_OSM},
4036         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4037                                         .driver_info = QETH_CARD_TYPE_OSX},
4038         {},
4039 };
4040 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4041
4042 static struct ccw_driver qeth_ccw_driver = {
4043         .driver = {
4044                 .owner = THIS_MODULE,
4045                 .name = "qeth",
4046         },
4047         .ids = qeth_ids,
4048         .probe = ccwgroup_probe_ccwdev,
4049         .remove = ccwgroup_remove_ccwdev,
4050 };
4051
4052 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4053                                 unsigned long driver_id)
4054 {
4055         return ccwgroup_create_from_string(root_dev, driver_id,
4056                                            &qeth_ccw_driver, 3, buf);
4057 }
4058
4059 int qeth_core_hardsetup_card(struct qeth_card *card)
4060 {
4061         int retries = 0;
4062         int rc;
4063
4064         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4065         atomic_set(&card->force_alloc_skb, 0);
4066         qeth_get_channel_path_desc(card);
4067 retry:
4068         if (retries)
4069                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4070                         dev_name(&card->gdev->dev));
4071         ccw_device_set_offline(CARD_DDEV(card));
4072         ccw_device_set_offline(CARD_WDEV(card));
4073         ccw_device_set_offline(CARD_RDEV(card));
4074         rc = ccw_device_set_online(CARD_RDEV(card));
4075         if (rc)
4076                 goto retriable;
4077         rc = ccw_device_set_online(CARD_WDEV(card));
4078         if (rc)
4079                 goto retriable;
4080         rc = ccw_device_set_online(CARD_DDEV(card));
4081         if (rc)
4082                 goto retriable;
4083         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4084 retriable:
4085         if (rc == -ERESTARTSYS) {
4086                 QETH_DBF_TEXT(SETUP, 2, "break1");
4087                 return rc;
4088         } else if (rc) {
4089                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4090                 if (++retries > 3)
4091                         goto out;
4092                 else
4093                         goto retry;
4094         }
4095         qeth_determine_capabilities(card);
4096         qeth_init_tokens(card);
4097         qeth_init_func_level(card);
4098         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4099         if (rc == -ERESTARTSYS) {
4100                 QETH_DBF_TEXT(SETUP, 2, "break2");
4101                 return rc;
4102         } else if (rc) {
4103                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4104                 if (--retries < 0)
4105                         goto out;
4106                 else
4107                         goto retry;
4108         }
4109         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4110         if (rc == -ERESTARTSYS) {
4111                 QETH_DBF_TEXT(SETUP, 2, "break3");
4112                 return rc;
4113         } else if (rc) {
4114                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4115                 if (--retries < 0)
4116                         goto out;
4117                 else
4118                         goto retry;
4119         }
4120         card->read_or_write_problem = 0;
4121         rc = qeth_mpc_initialize(card);
4122         if (rc) {
4123                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4124                 goto out;
4125         }
4126
4127         card->options.ipa4.supported_funcs = 0;
4128         card->options.adp.supported_funcs = 0;
4129         card->info.diagass_support = 0;
4130         qeth_query_ipassists(card, QETH_PROT_IPV4);
4131         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4132                 qeth_query_setadapterparms(card);
4133         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4134                 qeth_query_setdiagass(card);
4135         return 0;
4136 out:
4137         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4138                 "an error on the device\n");
4139         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4140                 dev_name(&card->gdev->dev), rc);
4141         return rc;
4142 }
4143 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4144
4145 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4146                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4147 {
4148         struct page *page = virt_to_page(element->addr);
4149         if (*pskb == NULL) {
4150                 /* the upper protocol layers assume that there is data in the
4151                  * skb itself. Copy a small amount (64 bytes) to make them
4152                  * happy. */
4153                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4154                 if (!(*pskb))
4155                         return -ENOMEM;
4156                 skb_reserve(*pskb, ETH_HLEN);
4157                 if (data_len <= 64) {
4158                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4159                                 data_len);
4160                 } else {
4161                         get_page(page);
4162                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4163                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4164                                 data_len - 64);
4165                         (*pskb)->data_len += data_len - 64;
4166                         (*pskb)->len      += data_len - 64;
4167                         (*pskb)->truesize += data_len - 64;
4168                         (*pfrag)++;
4169                 }
4170         } else {
4171                 get_page(page);
4172                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4173                 (*pskb)->data_len += data_len;
4174                 (*pskb)->len      += data_len;
4175                 (*pskb)->truesize += data_len;
4176                 (*pfrag)++;
4177         }
4178         return 0;
4179 }
4180
4181 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4182                 struct qdio_buffer *buffer,
4183                 struct qdio_buffer_element **__element, int *__offset,
4184                 struct qeth_hdr **hdr)
4185 {
4186         struct qdio_buffer_element *element = *__element;
4187         int offset = *__offset;
4188         struct sk_buff *skb = NULL;
4189         int skb_len = 0;
4190         void *data_ptr;
4191         int data_len;
4192         int headroom = 0;
4193         int use_rx_sg = 0;
4194         int frag = 0;
4195
4196         /* qeth_hdr must not cross element boundaries */
4197         if (element->length < offset + sizeof(struct qeth_hdr)) {
4198                 if (qeth_is_last_sbale(element))
4199                         return NULL;
4200                 element++;
4201                 offset = 0;
4202                 if (element->length < sizeof(struct qeth_hdr))
4203                         return NULL;
4204         }
4205         *hdr = element->addr + offset;
4206
4207         offset += sizeof(struct qeth_hdr);
4208         switch ((*hdr)->hdr.l2.id) {
4209         case QETH_HEADER_TYPE_LAYER2:
4210                 skb_len = (*hdr)->hdr.l2.pkt_length;
4211                 break;
4212         case QETH_HEADER_TYPE_LAYER3:
4213                 skb_len = (*hdr)->hdr.l3.length;
4214                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4215                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4216                         headroom = TR_HLEN;
4217                 else
4218                         headroom = ETH_HLEN;
4219                 break;
4220         case QETH_HEADER_TYPE_OSN:
4221                 skb_len = (*hdr)->hdr.osn.pdu_length;
4222                 headroom = sizeof(struct qeth_hdr);
4223                 break;
4224         default:
4225                 break;
4226         }
4227
4228         if (!skb_len)
4229                 return NULL;
4230
4231         if ((skb_len >= card->options.rx_sg_cb) &&
4232             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4233             (!atomic_read(&card->force_alloc_skb))) {
4234                 use_rx_sg = 1;
4235         } else {
4236                 skb = dev_alloc_skb(skb_len + headroom);
4237                 if (!skb)
4238                         goto no_mem;
4239                 if (headroom)
4240                         skb_reserve(skb, headroom);
4241         }
4242
4243         data_ptr = element->addr + offset;
4244         while (skb_len) {
4245                 data_len = min(skb_len, (int)(element->length - offset));
4246                 if (data_len) {
4247                         if (use_rx_sg) {
4248                                 if (qeth_create_skb_frag(element, &skb, offset,
4249                                     &frag, data_len))
4250                                         goto no_mem;
4251                         } else {
4252                                 memcpy(skb_put(skb, data_len), data_ptr,
4253                                         data_len);
4254                         }
4255                 }
4256                 skb_len -= data_len;
4257                 if (skb_len) {
4258                         if (qeth_is_last_sbale(element)) {
4259                                 QETH_CARD_TEXT(card, 4, "unexeob");
4260                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4261                                 dev_kfree_skb_any(skb);
4262                                 card->stats.rx_errors++;
4263                                 return NULL;
4264                         }
4265                         element++;
4266                         offset = 0;
4267                         data_ptr = element->addr;
4268                 } else {
4269                         offset += data_len;
4270                 }
4271         }
4272         *__element = element;
4273         *__offset = offset;
4274         if (use_rx_sg && card->options.performance_stats) {
4275                 card->perf_stats.sg_skbs_rx++;
4276                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4277         }
4278         return skb;
4279 no_mem:
4280         if (net_ratelimit()) {
4281                 QETH_CARD_TEXT(card, 2, "noskbmem");
4282         }
4283         card->stats.rx_dropped++;
4284         return NULL;
4285 }
4286 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4287
4288 static void qeth_unregister_dbf_views(void)
4289 {
4290         int x;
4291         for (x = 0; x < QETH_DBF_INFOS; x++) {
4292                 debug_unregister(qeth_dbf[x].id);
4293                 qeth_dbf[x].id = NULL;
4294         }
4295 }
4296
4297 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4298 {
4299         char dbf_txt_buf[32];
4300         va_list args;
4301
4302         if (level > id->level)
4303                 return;
4304         va_start(args, fmt);
4305         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4306         va_end(args);
4307         debug_text_event(id, level, dbf_txt_buf);
4308 }
4309 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4310
4311 static int qeth_register_dbf_views(void)
4312 {
4313         int ret;
4314         int x;
4315
4316         for (x = 0; x < QETH_DBF_INFOS; x++) {
4317                 /* register the areas */
4318                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4319                                                 qeth_dbf[x].pages,
4320                                                 qeth_dbf[x].areas,
4321                                                 qeth_dbf[x].len);
4322                 if (qeth_dbf[x].id == NULL) {
4323                         qeth_unregister_dbf_views();
4324                         return -ENOMEM;
4325                 }
4326
4327                 /* register a view */
4328                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4329                 if (ret) {
4330                         qeth_unregister_dbf_views();
4331                         return ret;
4332                 }
4333
4334                 /* set a passing level */
4335                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4336         }
4337
4338         return 0;
4339 }
4340
4341 int qeth_core_load_discipline(struct qeth_card *card,
4342                 enum qeth_discipline_id discipline)
4343 {
4344         int rc = 0;
4345         switch (discipline) {
4346         case QETH_DISCIPLINE_LAYER3:
4347                 card->discipline.ccwgdriver = try_then_request_module(
4348                         symbol_get(qeth_l3_ccwgroup_driver),
4349                         "qeth_l3");
4350                 break;
4351         case QETH_DISCIPLINE_LAYER2:
4352                 card->discipline.ccwgdriver = try_then_request_module(
4353                         symbol_get(qeth_l2_ccwgroup_driver),
4354                         "qeth_l2");
4355                 break;
4356         }
4357         if (!card->discipline.ccwgdriver) {
4358                 dev_err(&card->gdev->dev, "There is no kernel module to "
4359                         "support discipline %d\n", discipline);
4360                 rc = -EINVAL;
4361         }
4362         return rc;
4363 }
4364
4365 void qeth_core_free_discipline(struct qeth_card *card)
4366 {
4367         if (card->options.layer2)
4368                 symbol_put(qeth_l2_ccwgroup_driver);
4369         else
4370                 symbol_put(qeth_l3_ccwgroup_driver);
4371         card->discipline.ccwgdriver = NULL;
4372 }
4373
4374 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4375 {
4376         struct qeth_card *card;
4377         struct device *dev;
4378         int rc;
4379         unsigned long flags;
4380         char dbf_name[20];
4381
4382         QETH_DBF_TEXT(SETUP, 2, "probedev");
4383
4384         dev = &gdev->dev;
4385         if (!get_device(dev))
4386                 return -ENODEV;
4387
4388         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4389
4390         card = qeth_alloc_card();
4391         if (!card) {
4392                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4393                 rc = -ENOMEM;
4394                 goto err_dev;
4395         }
4396
4397         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4398                 dev_name(&gdev->dev));
4399         card->debug = debug_register(dbf_name, 2, 1, 8);
4400         if (!card->debug) {
4401                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4402                 rc = -ENOMEM;
4403                 goto err_card;
4404         }
4405         debug_register_view(card->debug, &debug_hex_ascii_view);
4406
4407         card->read.ccwdev  = gdev->cdev[0];
4408         card->write.ccwdev = gdev->cdev[1];
4409         card->data.ccwdev  = gdev->cdev[2];
4410         dev_set_drvdata(&gdev->dev, card);
4411         card->gdev = gdev;
4412         gdev->cdev[0]->handler = qeth_irq;
4413         gdev->cdev[1]->handler = qeth_irq;
4414         gdev->cdev[2]->handler = qeth_irq;
4415
4416         rc = qeth_determine_card_type(card);
4417         if (rc) {
4418                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4419                 goto err_dbf;
4420         }
4421         rc = qeth_setup_card(card);
4422         if (rc) {
4423                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4424                 goto err_dbf;
4425         }
4426
4427         if (card->info.type == QETH_CARD_TYPE_OSN)
4428                 rc = qeth_core_create_osn_attributes(dev);
4429         else
4430                 rc = qeth_core_create_device_attributes(dev);
4431         if (rc)
4432                 goto err_dbf;
4433         switch (card->info.type) {
4434         case QETH_CARD_TYPE_OSN:
4435         case QETH_CARD_TYPE_OSM:
4436                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4437                 if (rc)
4438                         goto err_attr;
4439                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4440                 if (rc)
4441                         goto err_disc;
4442         case QETH_CARD_TYPE_OSD:
4443         case QETH_CARD_TYPE_OSX:
4444         default:
4445                 break;
4446         }
4447
4448         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4449         list_add_tail(&card->list, &qeth_core_card_list.list);
4450         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4451
4452         qeth_determine_capabilities(card);
4453         return 0;
4454
4455 err_disc:
4456         qeth_core_free_discipline(card);
4457 err_attr:
4458         if (card->info.type == QETH_CARD_TYPE_OSN)
4459                 qeth_core_remove_osn_attributes(dev);
4460         else
4461                 qeth_core_remove_device_attributes(dev);
4462 err_dbf:
4463         debug_unregister(card->debug);
4464 err_card:
4465         qeth_core_free_card(card);
4466 err_dev:
4467         put_device(dev);
4468         return rc;
4469 }
4470
4471 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4472 {
4473         unsigned long flags;
4474         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4475
4476         QETH_DBF_TEXT(SETUP, 2, "removedv");
4477
4478         if (card->info.type == QETH_CARD_TYPE_OSN) {
4479                 qeth_core_remove_osn_attributes(&gdev->dev);
4480         } else {
4481                 qeth_core_remove_device_attributes(&gdev->dev);
4482         }
4483
4484         if (card->discipline.ccwgdriver) {
4485                 card->discipline.ccwgdriver->remove(gdev);
4486                 qeth_core_free_discipline(card);
4487         }
4488
4489         debug_unregister(card->debug);
4490         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4491         list_del(&card->list);
4492         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4493         qeth_core_free_card(card);
4494         dev_set_drvdata(&gdev->dev, NULL);
4495         put_device(&gdev->dev);
4496         return;
4497 }
4498
4499 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4500 {
4501         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4502         int rc = 0;
4503         int def_discipline;
4504
4505         if (!card->discipline.ccwgdriver) {
4506                 if (card->info.type == QETH_CARD_TYPE_IQD)
4507                         def_discipline = QETH_DISCIPLINE_LAYER3;
4508                 else
4509                         def_discipline = QETH_DISCIPLINE_LAYER2;
4510                 rc = qeth_core_load_discipline(card, def_discipline);
4511                 if (rc)
4512                         goto err;
4513                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4514                 if (rc)
4515                         goto err;
4516         }
4517         rc = card->discipline.ccwgdriver->set_online(gdev);
4518 err:
4519         return rc;
4520 }
4521
4522 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4523 {
4524         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4525         return card->discipline.ccwgdriver->set_offline(gdev);
4526 }
4527
4528 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4529 {
4530         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4531         if (card->discipline.ccwgdriver &&
4532             card->discipline.ccwgdriver->shutdown)
4533                 card->discipline.ccwgdriver->shutdown(gdev);
4534 }
4535
4536 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4537 {
4538         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4539         if (card->discipline.ccwgdriver &&
4540             card->discipline.ccwgdriver->prepare)
4541                 return card->discipline.ccwgdriver->prepare(gdev);
4542         return 0;
4543 }
4544
4545 static void qeth_core_complete(struct ccwgroup_device *gdev)
4546 {
4547         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4548         if (card->discipline.ccwgdriver &&
4549             card->discipline.ccwgdriver->complete)
4550                 card->discipline.ccwgdriver->complete(gdev);
4551 }
4552
4553 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4554 {
4555         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4556         if (card->discipline.ccwgdriver &&
4557             card->discipline.ccwgdriver->freeze)
4558                 return card->discipline.ccwgdriver->freeze(gdev);
4559         return 0;
4560 }
4561
4562 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4563 {
4564         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4565         if (card->discipline.ccwgdriver &&
4566             card->discipline.ccwgdriver->thaw)
4567                 return card->discipline.ccwgdriver->thaw(gdev);
4568         return 0;
4569 }
4570
4571 static int qeth_core_restore(struct ccwgroup_device *gdev)
4572 {
4573         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4574         if (card->discipline.ccwgdriver &&
4575             card->discipline.ccwgdriver->restore)
4576                 return card->discipline.ccwgdriver->restore(gdev);
4577         return 0;
4578 }
4579
4580 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4581         .driver = {
4582                 .owner = THIS_MODULE,
4583                 .name = "qeth",
4584         },
4585         .driver_id = 0xD8C5E3C8,
4586         .probe = qeth_core_probe_device,
4587         .remove = qeth_core_remove_device,
4588         .set_online = qeth_core_set_online,
4589         .set_offline = qeth_core_set_offline,
4590         .shutdown = qeth_core_shutdown,
4591         .prepare = qeth_core_prepare,
4592         .complete = qeth_core_complete,
4593         .freeze = qeth_core_freeze,
4594         .thaw = qeth_core_thaw,
4595         .restore = qeth_core_restore,
4596 };
4597
4598 static ssize_t
4599 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4600                            size_t count)
4601 {
4602         int err;
4603         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4604                                         qeth_core_ccwgroup_driver.driver_id);
4605         if (err)
4606                 return err;
4607         else
4608                 return count;
4609 }
4610
4611 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4612
4613 static struct {
4614         const char str[ETH_GSTRING_LEN];
4615 } qeth_ethtool_stats_keys[] = {
4616 /*  0 */{"rx skbs"},
4617         {"rx buffers"},
4618         {"tx skbs"},
4619         {"tx buffers"},
4620         {"tx skbs no packing"},
4621         {"tx buffers no packing"},
4622         {"tx skbs packing"},
4623         {"tx buffers packing"},
4624         {"tx sg skbs"},
4625         {"tx sg frags"},
4626 /* 10 */{"rx sg skbs"},
4627         {"rx sg frags"},
4628         {"rx sg page allocs"},
4629         {"tx large kbytes"},
4630         {"tx large count"},
4631         {"tx pk state ch n->p"},
4632         {"tx pk state ch p->n"},
4633         {"tx pk watermark low"},
4634         {"tx pk watermark high"},
4635         {"queue 0 buffer usage"},
4636 /* 20 */{"queue 1 buffer usage"},
4637         {"queue 2 buffer usage"},
4638         {"queue 3 buffer usage"},
4639         {"rx poll time"},
4640         {"rx poll count"},
4641         {"rx do_QDIO time"},
4642         {"rx do_QDIO count"},
4643         {"tx handler time"},
4644         {"tx handler count"},
4645         {"tx time"},
4646 /* 30 */{"tx count"},
4647         {"tx do_QDIO time"},
4648         {"tx do_QDIO count"},
4649         {"tx csum"},
4650         {"tx lin"},
4651 };
4652
4653 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4654 {
4655         switch (stringset) {
4656         case ETH_SS_STATS:
4657                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4658         default:
4659                 return -EINVAL;
4660         }
4661 }
4662 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4663
4664 void qeth_core_get_ethtool_stats(struct net_device *dev,
4665                 struct ethtool_stats *stats, u64 *data)
4666 {
4667         struct qeth_card *card = dev->ml_priv;
4668         data[0] = card->stats.rx_packets -
4669                                 card->perf_stats.initial_rx_packets;
4670         data[1] = card->perf_stats.bufs_rec;
4671         data[2] = card->stats.tx_packets -
4672                                 card->perf_stats.initial_tx_packets;
4673         data[3] = card->perf_stats.bufs_sent;
4674         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4675                         - card->perf_stats.skbs_sent_pack;
4676         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4677         data[6] = card->perf_stats.skbs_sent_pack;
4678         data[7] = card->perf_stats.bufs_sent_pack;
4679         data[8] = card->perf_stats.sg_skbs_sent;
4680         data[9] = card->perf_stats.sg_frags_sent;
4681         data[10] = card->perf_stats.sg_skbs_rx;
4682         data[11] = card->perf_stats.sg_frags_rx;
4683         data[12] = card->perf_stats.sg_alloc_page_rx;
4684         data[13] = (card->perf_stats.large_send_bytes >> 10);
4685         data[14] = card->perf_stats.large_send_cnt;
4686         data[15] = card->perf_stats.sc_dp_p;
4687         data[16] = card->perf_stats.sc_p_dp;
4688         data[17] = QETH_LOW_WATERMARK_PACK;
4689         data[18] = QETH_HIGH_WATERMARK_PACK;
4690         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4691         data[20] = (card->qdio.no_out_queues > 1) ?
4692                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4693         data[21] = (card->qdio.no_out_queues > 2) ?
4694                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4695         data[22] = (card->qdio.no_out_queues > 3) ?
4696                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4697         data[23] = card->perf_stats.inbound_time;
4698         data[24] = card->perf_stats.inbound_cnt;
4699         data[25] = card->perf_stats.inbound_do_qdio_time;
4700         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4701         data[27] = card->perf_stats.outbound_handler_time;
4702         data[28] = card->perf_stats.outbound_handler_cnt;
4703         data[29] = card->perf_stats.outbound_time;
4704         data[30] = card->perf_stats.outbound_cnt;
4705         data[31] = card->perf_stats.outbound_do_qdio_time;
4706         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4707         data[33] = card->perf_stats.tx_csum;
4708         data[34] = card->perf_stats.tx_lin;
4709 }
4710 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4711
4712 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4713 {
4714         switch (stringset) {
4715         case ETH_SS_STATS:
4716                 memcpy(data, &qeth_ethtool_stats_keys,
4717                         sizeof(qeth_ethtool_stats_keys));
4718                 break;
4719         default:
4720                 WARN_ON(1);
4721                 break;
4722         }
4723 }
4724 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4725
4726 void qeth_core_get_drvinfo(struct net_device *dev,
4727                 struct ethtool_drvinfo *info)
4728 {
4729         struct qeth_card *card = dev->ml_priv;
4730         if (card->options.layer2)
4731                 strcpy(info->driver, "qeth_l2");
4732         else
4733                 strcpy(info->driver, "qeth_l3");
4734
4735         strcpy(info->version, "1.0");
4736         strcpy(info->fw_version, card->info.mcl_level);
4737         sprintf(info->bus_info, "%s/%s/%s",
4738                         CARD_RDEV_ID(card),
4739                         CARD_WDEV_ID(card),
4740                         CARD_DDEV_ID(card));
4741 }
4742 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4743
4744 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4745                                         struct ethtool_cmd *ecmd)
4746 {
4747         struct qeth_card *card = netdev->ml_priv;
4748         enum qeth_link_types link_type;
4749
4750         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4751                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4752         else
4753                 link_type = card->info.link_type;
4754
4755         ecmd->transceiver = XCVR_INTERNAL;
4756         ecmd->supported = SUPPORTED_Autoneg;
4757         ecmd->advertising = ADVERTISED_Autoneg;
4758         ecmd->duplex = DUPLEX_FULL;
4759         ecmd->autoneg = AUTONEG_ENABLE;
4760
4761         switch (link_type) {
4762         case QETH_LINK_TYPE_FAST_ETH:
4763         case QETH_LINK_TYPE_LANE_ETH100:
4764                 ecmd->supported |= SUPPORTED_10baseT_Half |
4765                                         SUPPORTED_10baseT_Full |
4766                                         SUPPORTED_100baseT_Half |
4767                                         SUPPORTED_100baseT_Full |
4768                                         SUPPORTED_TP;
4769                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4770                                         ADVERTISED_10baseT_Full |
4771                                         ADVERTISED_100baseT_Half |
4772                                         ADVERTISED_100baseT_Full |
4773                                         ADVERTISED_TP;
4774                 ecmd->speed = SPEED_100;
4775                 ecmd->port = PORT_TP;
4776                 break;
4777
4778         case QETH_LINK_TYPE_GBIT_ETH:
4779         case QETH_LINK_TYPE_LANE_ETH1000:
4780                 ecmd->supported |= SUPPORTED_10baseT_Half |
4781                                         SUPPORTED_10baseT_Full |
4782                                         SUPPORTED_100baseT_Half |
4783                                         SUPPORTED_100baseT_Full |
4784                                         SUPPORTED_1000baseT_Half |
4785                                         SUPPORTED_1000baseT_Full |
4786                                         SUPPORTED_FIBRE;
4787                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4788                                         ADVERTISED_10baseT_Full |
4789                                         ADVERTISED_100baseT_Half |
4790                                         ADVERTISED_100baseT_Full |
4791                                         ADVERTISED_1000baseT_Half |
4792                                         ADVERTISED_1000baseT_Full |
4793                                         ADVERTISED_FIBRE;
4794                 ecmd->speed = SPEED_1000;
4795                 ecmd->port = PORT_FIBRE;
4796                 break;
4797
4798         case QETH_LINK_TYPE_10GBIT_ETH:
4799                 ecmd->supported |= SUPPORTED_10baseT_Half |
4800                                         SUPPORTED_10baseT_Full |
4801                                         SUPPORTED_100baseT_Half |
4802                                         SUPPORTED_100baseT_Full |
4803                                         SUPPORTED_1000baseT_Half |
4804                                         SUPPORTED_1000baseT_Full |
4805                                         SUPPORTED_10000baseT_Full |
4806                                         SUPPORTED_FIBRE;
4807                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4808                                         ADVERTISED_10baseT_Full |
4809                                         ADVERTISED_100baseT_Half |
4810                                         ADVERTISED_100baseT_Full |
4811                                         ADVERTISED_1000baseT_Half |
4812                                         ADVERTISED_1000baseT_Full |
4813                                         ADVERTISED_10000baseT_Full |
4814                                         ADVERTISED_FIBRE;
4815                 ecmd->speed = SPEED_10000;
4816                 ecmd->port = PORT_FIBRE;
4817                 break;
4818
4819         default:
4820                 ecmd->supported |= SUPPORTED_10baseT_Half |
4821                                         SUPPORTED_10baseT_Full |
4822                                         SUPPORTED_TP;
4823                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4824                                         ADVERTISED_10baseT_Full |
4825                                         ADVERTISED_TP;
4826                 ecmd->speed = SPEED_10;
4827                 ecmd->port = PORT_TP;
4828         }
4829
4830         return 0;
4831 }
4832 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4833
4834 static int __init qeth_core_init(void)
4835 {
4836         int rc;
4837
4838         pr_info("loading core functions\n");
4839         INIT_LIST_HEAD(&qeth_core_card_list.list);
4840         rwlock_init(&qeth_core_card_list.rwlock);
4841
4842         rc = qeth_register_dbf_views();
4843         if (rc)
4844                 goto out_err;
4845         rc = ccw_driver_register(&qeth_ccw_driver);
4846         if (rc)
4847                 goto ccw_err;
4848         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4849         if (rc)
4850                 goto ccwgroup_err;
4851         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4852                                 &driver_attr_group);
4853         if (rc)
4854                 goto driver_err;
4855         qeth_core_root_dev = root_device_register("qeth");
4856         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4857         if (rc)
4858                 goto register_err;
4859
4860         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4861                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4862         if (!qeth_core_header_cache) {
4863                 rc = -ENOMEM;
4864                 goto slab_err;
4865         }
4866
4867         return 0;
4868 slab_err:
4869         root_device_unregister(qeth_core_root_dev);
4870 register_err:
4871         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4872                            &driver_attr_group);
4873 driver_err:
4874         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4875 ccwgroup_err:
4876         ccw_driver_unregister(&qeth_ccw_driver);
4877 ccw_err:
4878         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4879         qeth_unregister_dbf_views();
4880 out_err:
4881         pr_err("Initializing the qeth device driver failed\n");
4882         return rc;
4883 }
4884
4885 static void __exit qeth_core_exit(void)
4886 {
4887         root_device_unregister(qeth_core_root_dev);
4888         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4889                            &driver_attr_group);
4890         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4891         ccw_driver_unregister(&qeth_ccw_driver);
4892         kmem_cache_destroy(qeth_core_header_cache);
4893         qeth_unregister_dbf_views();
4894         pr_info("core functions removed\n");
4895 }
4896
4897 module_init(qeth_core_init);
4898 module_exit(qeth_core_exit);
4899 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4900 MODULE_DESCRIPTION("qeth core functions");
4901 MODULE_LICENSE("GPL");