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   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/tcp.h>
  21 #include <linux/mii.h>
  22 #include <linux/kthread.h>
  23 #include <linux/slab.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/io.h>
  27
  28 #include "qeth_core.h"
  29
  30 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  31         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  32         /*                   N  P  A    M  L  V                      H  */
  33         [QETH_DBF_SETUP] = {"qeth_setup",
  34                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  35         [QETH_DBF_QERR]  = {"qeth_qerr",
  36                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  37         [QETH_DBF_TRACE] = {"qeth_trace",
  38                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  39         [QETH_DBF_MSG]   = {"qeth_msg",
  40                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  41         [QETH_DBF_SENSE] = {"qeth_sense",
  42                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  43         [QETH_DBF_MISC]  = {"qeth_misc",
  44                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  45         [QETH_DBF_CTRL]  = {"qeth_control",
  46                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  47 };
  48 EXPORT_SYMBOL_GPL(qeth_dbf);
  49
  50 struct qeth_card_list_struct qeth_core_card_list;
  51 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  52 struct kmem_cache *qeth_core_header_cache;
  53 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  54
  55 static struct device *qeth_core_root_dev;
  56 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  57 static struct lock_class_key qdio_out_skb_queue_key;
  58
  59 static void qeth_send_control_data_cb(struct qeth_channel *,
  60                         struct qeth_cmd_buffer *);
  61 static int qeth_issue_next_read(struct qeth_card *);
  62 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  63 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  64 static void qeth_free_buffer_pool(struct qeth_card *);
  65 static int qeth_qdio_establish(struct qeth_card *);
  66
  67
  68 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  69                 struct qdio_buffer *buffer, int is_tso,
  70                 int *next_element_to_fill)
  71 {
  72         struct skb_frag_struct *frag;
  73         int fragno;
  74         unsigned long addr;
  75         int element, cnt, dlen;
  76
  77         fragno = skb_shinfo(skb)->nr_frags;
  78         element = *next_element_to_fill;
  79         dlen = 0;
  80
  81         if (is_tso)
  82                 buffer->element[element].flags =
  83                         SBAL_FLAGS_MIDDLE_FRAG;
  84         else
  85                 buffer->element[element].flags =
  86                         SBAL_FLAGS_FIRST_FRAG;
  87         dlen = skb->len - skb->data_len;
  88         if (dlen) {
  89                 buffer->element[element].addr = skb->data;
  90                 buffer->element[element].length = dlen;
  91                 element++;
  92         }
  93         for (cnt = 0; cnt < fragno; cnt++) {
  94                 frag = &skb_shinfo(skb)->frags[cnt];
  95                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  96                         frag->page_offset;
  97                 buffer->element[element].addr = (char *)addr;
  98                 buffer->element[element].length = frag->size;
  99                 if (cnt < (fragno - 1))
 100                         buffer->element[element].flags =
 101                                 SBAL_FLAGS_MIDDLE_FRAG;
 102                 else
 103                         buffer->element[element].flags =
 104                                 SBAL_FLAGS_LAST_FRAG;
 105                 element++;
 106         }
 107         *next_element_to_fill = element;
 108 }
 109
 110 static inline const char *qeth_get_cardname(struct qeth_card *card)
 111 {
 112         if (card->info.guestlan) {
 113                 switch (card->info.type) {
 114                 case QETH_CARD_TYPE_OSD:
 115                         return " Guest LAN QDIO";
 116                 case QETH_CARD_TYPE_IQD:
 117                         return " Guest LAN Hiper";
 118                 case QETH_CARD_TYPE_OSM:
 119                         return " Guest LAN QDIO - OSM";
 120                 case QETH_CARD_TYPE_OSX:
 121                         return " Guest LAN QDIO - OSX";
 122                 default:
 123                         return " unknown";
 124                 }
 125         } else {
 126                 switch (card->info.type) {
 127                 case QETH_CARD_TYPE_OSD:
 128                         return " OSD Express";
 129                 case QETH_CARD_TYPE_IQD:
 130                         return " HiperSockets";
 131                 case QETH_CARD_TYPE_OSN:
 132                         return " OSN QDIO";
 133                 case QETH_CARD_TYPE_OSM:
 134                         return " OSM QDIO";
 135                 case QETH_CARD_TYPE_OSX:
 136                         return " OSX QDIO";
 137                 default:
 138                         return " unknown";
 139                 }
 140         }
 141         return " n/a";
 142 }
 143
 144 /* max length to be returned: 14 */
 145 const char *qeth_get_cardname_short(struct qeth_card *card)
 146 {
 147         if (card->info.guestlan) {
 148                 switch (card->info.type) {
 149                 case QETH_CARD_TYPE_OSD:
 150                         return "GuestLAN QDIO";
 151                 case QETH_CARD_TYPE_IQD:
 152                         return "GuestLAN Hiper";
 153                 case QETH_CARD_TYPE_OSM:
 154                         return "GuestLAN OSM";
 155                 case QETH_CARD_TYPE_OSX:
 156                         return "GuestLAN OSX";
 157                 default:
 158                         return "unknown";
 159                 }
 160         } else {
 161                 switch (card->info.type) {
 162                 case QETH_CARD_TYPE_OSD:
 163                         switch (card->info.link_type) {
 164                         case QETH_LINK_TYPE_FAST_ETH:
 165                                 return "OSD_100";
 166                         case QETH_LINK_TYPE_HSTR:
 167                                 return "HSTR";
 168                         case QETH_LINK_TYPE_GBIT_ETH:
 169                                 return "OSD_1000";
 170                         case QETH_LINK_TYPE_10GBIT_ETH:
 171                                 return "OSD_10GIG";
 172                         case QETH_LINK_TYPE_LANE_ETH100:
 173                                 return "OSD_FE_LANE";
 174                         case QETH_LINK_TYPE_LANE_TR:
 175                                 return "OSD_TR_LANE";
 176                         case QETH_LINK_TYPE_LANE_ETH1000:
 177                                 return "OSD_GbE_LANE";
 178                         case QETH_LINK_TYPE_LANE:
 179                                 return "OSD_ATM_LANE";
 180                         default:
 181                                 return "OSD_Express";
 182                         }
 183                 case QETH_CARD_TYPE_IQD:
 184                         return "HiperSockets";
 185                 case QETH_CARD_TYPE_OSN:
 186                         return "OSN";
 187                 case QETH_CARD_TYPE_OSM:
 188                         return "OSM_1000";
 189                 case QETH_CARD_TYPE_OSX:
 190                         return "OSX_10GIG";
 191                 default:
 192                         return "unknown";
 193                 }
 194         }
 195         return "n/a";
 196 }
 197
 198 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 199                          int clear_start_mask)
 200 {
 201         unsigned long flags;
 202
 203         spin_lock_irqsave(&card->thread_mask_lock, flags);
 204         card->thread_allowed_mask = threads;
 205         if (clear_start_mask)
 206                 card->thread_start_mask &= threads;
 207         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 208         wake_up(&card->wait_q);
 209 }
 210 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 211
 212 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 213 {
 214         unsigned long flags;
 215         int rc = 0;
 216
 217         spin_lock_irqsave(&card->thread_mask_lock, flags);
 218         rc = (card->thread_running_mask & threads);
 219         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 220         return rc;
 221 }
 222 EXPORT_SYMBOL_GPL(qeth_threads_running);
 223
 224 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 225 {
 226         return wait_event_interruptible(card->wait_q,
 227                         qeth_threads_running(card, threads) == 0);
 228 }
 229 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 230
 231 void qeth_clear_working_pool_list(struct qeth_card *card)
 232 {
 233         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 234
 235         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 236         list_for_each_entry_safe(pool_entry, tmp,
 237                             &card->qdio.in_buf_pool.entry_list, list){
 238                         list_del(&pool_entry->list);
 239         }
 240 }
 241 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 242
 243 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 244 {
 245         struct qeth_buffer_pool_entry *pool_entry;
 246         void *ptr;
 247         int i, j;
 248
 249         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 250         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 251                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 252                 if (!pool_entry) {
 253                         qeth_free_buffer_pool(card);
 254                         return -ENOMEM;
 255                 }
 256                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 257                         ptr = (void *) __get_free_page(GFP_KERNEL);
 258                         if (!ptr) {
 259                                 while (j > 0)
 260                                         free_page((unsigned long)
 261                                                   pool_entry->elements[--j]);
 262                                 kfree(pool_entry);
 263                                 qeth_free_buffer_pool(card);
 264                                 return -ENOMEM;
 265                         }
 266                         pool_entry->elements[j] = ptr;
 267                 }
 268                 list_add(&pool_entry->init_list,
 269                          &card->qdio.init_pool.entry_list);
 270         }
 271         return 0;
 272 }
 273
 274 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 275 {
 276         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 277
 278         if ((card->state != CARD_STATE_DOWN) &&
 279             (card->state != CARD_STATE_RECOVER))
 280                 return -EPERM;
 281
 282         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 283         qeth_clear_working_pool_list(card);
 284         qeth_free_buffer_pool(card);
 285         card->qdio.in_buf_pool.buf_count = bufcnt;
 286         card->qdio.init_pool.buf_count = bufcnt;
 287         return qeth_alloc_buffer_pool(card);
 288 }
 289 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 290
 291 static int qeth_issue_next_read(struct qeth_card *card)
 292 {
 293         int rc;
 294         struct qeth_cmd_buffer *iob;
 295
 296         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 297         if (card->read.state != CH_STATE_UP)
 298                 return -EIO;
 299         iob = qeth_get_buffer(&card->read);
 300         if (!iob) {
 301                 dev_warn(&card->gdev->dev, "The qeth device driver "
 302                         "failed to recover an error on the device\n");
 303                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 304                         "available\n", dev_name(&card->gdev->dev));
 305                 return -ENOMEM;
 306         }
 307         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 308         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 309         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 310                               (addr_t) iob, 0, 0);
 311         if (rc) {
 312                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 313                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 314                 atomic_set(&card->read.irq_pending, 0);
 315                 qeth_schedule_recovery(card);
 316                 wake_up(&card->wait_q);
 317         }
 318         return rc;
 319 }
 320
 321 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 322 {
 323         struct qeth_reply *reply;
 324
 325         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 326         if (reply) {
 327                 atomic_set(&reply->refcnt, 1);
 328                 atomic_set(&reply->received, 0);
 329                 reply->card = card;
 330         };
 331         return reply;
 332 }
 333
 334 static void qeth_get_reply(struct qeth_reply *reply)
 335 {
 336         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 337         atomic_inc(&reply->refcnt);
 338 }
 339
 340 static void qeth_put_reply(struct qeth_reply *reply)
 341 {
 342         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 343         if (atomic_dec_and_test(&reply->refcnt))
 344                 kfree(reply);
 345 }
 346
 347 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 348                 struct qeth_card *card)
 349 {
 350         char *ipa_name;
 351         int com = cmd->hdr.command;
 352         ipa_name = qeth_get_ipa_cmd_name(com);
 353         if (rc)
 354                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 355                                 ipa_name, com, QETH_CARD_IFNAME(card),
 356                                         rc, qeth_get_ipa_msg(rc));
 357         else
 358                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 359                                 ipa_name, com, QETH_CARD_IFNAME(card));
 360 }
 361
 362 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 363                 struct qeth_cmd_buffer *iob)
 364 {
 365         struct qeth_ipa_cmd *cmd = NULL;
 366
 367         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 368         if (IS_IPA(iob->data)) {
 369                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 370                 if (IS_IPA_REPLY(cmd)) {
 371                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 372                             cmd->hdr.command != IPA_CMD_DELCCID &&
 373                             cmd->hdr.command != IPA_CMD_MODCCID &&
 374                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 375                                 qeth_issue_ipa_msg(cmd,
 376                                                 cmd->hdr.return_code, card);
 377                         return cmd;
 378                 } else {
 379                         switch (cmd->hdr.command) {
 380                         case IPA_CMD_STOPLAN:
 381                                 dev_warn(&card->gdev->dev,
 382                                            "The link for interface %s on CHPID"
 383                                            " 0x%X failed\n",
 384                                            QETH_CARD_IFNAME(card),
 385                                            card->info.chpid);
 386                                 card->lan_online = 0;
 387                                 if (card->dev && netif_carrier_ok(card->dev))
 388                                         netif_carrier_off(card->dev);
 389                                 return NULL;
 390                         case IPA_CMD_STARTLAN:
 391                                 dev_info(&card->gdev->dev,
 392                                            "The link for %s on CHPID 0x%X has"
 393                                            " been restored\n",
 394                                            QETH_CARD_IFNAME(card),
 395                                            card->info.chpid);
 396                                 netif_carrier_on(card->dev);
 397                                 card->lan_online = 1;
 398                                 qeth_schedule_recovery(card);
 399                                 return NULL;
 400                         case IPA_CMD_MODCCID:
 401                                 return cmd;
 402                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 403                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 404                                 break;
 405                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 406                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 407                                 break;
 408                         default:
 409                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 410                                            "but not a reply!\n");
 411                                 break;
 412                         }
 413                 }
 414         }
 415         return cmd;
 416 }
 417
 418 void qeth_clear_ipacmd_list(struct qeth_card *card)
 419 {
 420         struct qeth_reply *reply, *r;
 421         unsigned long flags;
 422
 423         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 424
 425         spin_lock_irqsave(&card->lock, flags);
 426         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 427                 qeth_get_reply(reply);
 428                 reply->rc = -EIO;
 429                 atomic_inc(&reply->received);
 430                 list_del_init(&reply->list);
 431                 wake_up(&reply->wait_q);
 432                 qeth_put_reply(reply);
 433         }
 434         spin_unlock_irqrestore(&card->lock, flags);
 435 }
 436 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 437
 438 static int qeth_check_idx_response(struct qeth_card *card,
 439         unsigned char *buffer)
 440 {
 441         if (!buffer)
 442                 return 0;
 443
 444         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 445         if ((buffer[2] & 0xc0) == 0xc0) {
 446                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 447                            "with cause code 0x%02x%s\n",
 448                            buffer[4],
 449                            ((buffer[4] == 0x22) ?
 450                             " -- try another portname" : ""));
 451                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 452                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 453                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 454                 if (buffer[4] == 0xf6) {
 455                         dev_err(&card->gdev->dev,
 456                         "The qeth device is not configured "
 457                         "for the OSI layer required by z/VM\n");
 458                         return -EPERM;
 459                 }
 460                 return -EIO;
 461         }
 462         return 0;
 463 }
 464
 465 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 466                 __u32 len)
 467 {
 468         struct qeth_card *card;
 469
 470         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 471         card = CARD_FROM_CDEV(channel->ccwdev);
 472         if (channel == &card->read)
 473                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 474         else
 475                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 476         channel->ccw.count = len;
 477         channel->ccw.cda = (__u32) __pa(iob);
 478 }
 479
 480 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 481 {
 482         __u8 index;
 483
 484         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 485         index = channel->io_buf_no;
 486         do {
 487                 if (channel->iob[index].state == BUF_STATE_FREE) {
 488                         channel->iob[index].state = BUF_STATE_LOCKED;
 489                         channel->io_buf_no = (channel->io_buf_no + 1) %
 490                                 QETH_CMD_BUFFER_NO;
 491                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 492                         return channel->iob + index;
 493                 }
 494                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 495         } while (index != channel->io_buf_no);
 496
 497         return NULL;
 498 }
 499
 500 void qeth_release_buffer(struct qeth_channel *channel,
 501                 struct qeth_cmd_buffer *iob)
 502 {
 503         unsigned long flags;
 504
 505         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 506         spin_lock_irqsave(&channel->iob_lock, flags);
 507         memset(iob->data, 0, QETH_BUFSIZE);
 508         iob->state = BUF_STATE_FREE;
 509         iob->callback = qeth_send_control_data_cb;
 510         iob->rc = 0;
 511         spin_unlock_irqrestore(&channel->iob_lock, flags);
 512 }
 513 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 514
 515 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 516 {
 517         struct qeth_cmd_buffer *buffer = NULL;
 518         unsigned long flags;
 519
 520         spin_lock_irqsave(&channel->iob_lock, flags);
 521         buffer = __qeth_get_buffer(channel);
 522         spin_unlock_irqrestore(&channel->iob_lock, flags);
 523         return buffer;
 524 }
 525
 526 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 527 {
 528         struct qeth_cmd_buffer *buffer;
 529         wait_event(channel->wait_q,
 530                    ((buffer = qeth_get_buffer(channel)) != NULL));
 531         return buffer;
 532 }
 533 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 534
 535 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 536 {
 537         int cnt;
 538
 539         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 540                 qeth_release_buffer(channel, &channel->iob[cnt]);
 541         channel->buf_no = 0;
 542         channel->io_buf_no = 0;
 543 }
 544 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 545
 546 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 547                   struct qeth_cmd_buffer *iob)
 548 {
 549         struct qeth_card *card;
 550         struct qeth_reply *reply, *r;
 551         struct qeth_ipa_cmd *cmd;
 552         unsigned long flags;
 553         int keep_reply;
 554         int rc = 0;
 555
 556         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 557
 558         card = CARD_FROM_CDEV(channel->ccwdev);
 559         rc = qeth_check_idx_response(card, iob->data);
 560         switch (rc) {
 561         case 0:
 562                 break;
 563         case -EIO:
 564                 qeth_clear_ipacmd_list(card);
 565                 qeth_schedule_recovery(card);
 566         default:
 567                 goto out;
 568         }
 569
 570         cmd = qeth_check_ipa_data(card, iob);
 571         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 572                 goto out;
 573         /*in case of OSN : check if cmd is set */
 574         if (card->info.type == QETH_CARD_TYPE_OSN &&
 575             cmd &&
 576             cmd->hdr.command != IPA_CMD_STARTLAN &&
 577             card->osn_info.assist_cb != NULL) {
 578                 card->osn_info.assist_cb(card->dev, cmd);
 579                 goto out;
 580         }
 581
 582         spin_lock_irqsave(&card->lock, flags);
 583         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 584                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 585                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 586                         qeth_get_reply(reply);
 587                         list_del_init(&reply->list);
 588                         spin_unlock_irqrestore(&card->lock, flags);
 589                         keep_reply = 0;
 590                         if (reply->callback != NULL) {
 591                                 if (cmd) {
 592                                         reply->offset = (__u16)((char *)cmd -
 593                                                         (char *)iob->data);
 594                                         keep_reply = reply->callback(card,
 595                                                         reply,
 596                                                         (unsigned long)cmd);
 597                                 } else
 598                                         keep_reply = reply->callback(card,
 599                                                         reply,
 600                                                         (unsigned long)iob);
 601                         }
 602                         if (cmd)
 603                                 reply->rc = (u16) cmd->hdr.return_code;
 604                         else if (iob->rc)
 605                                 reply->rc = iob->rc;
 606                         if (keep_reply) {
 607                                 spin_lock_irqsave(&card->lock, flags);
 608                                 list_add_tail(&reply->list,
 609                                               &card->cmd_waiter_list);
 610                                 spin_unlock_irqrestore(&card->lock, flags);
 611                         } else {
 612                                 atomic_inc(&reply->received);
 613                                 wake_up(&reply->wait_q);
 614                         }
 615                         qeth_put_reply(reply);
 616                         goto out;
 617                 }
 618         }
 619         spin_unlock_irqrestore(&card->lock, flags);
 620 out:
 621         memcpy(&card->seqno.pdu_hdr_ack,
 622                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 623                 QETH_SEQ_NO_LENGTH);
 624         qeth_release_buffer(channel, iob);
 625 }
 626
 627 static int qeth_setup_channel(struct qeth_channel *channel)
 628 {
 629         int cnt;
 630
 631         QETH_DBF_TEXT(SETUP, 2, "setupch");
 632         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 633                 channel->iob[cnt].data =
 634                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 635                 if (channel->iob[cnt].data == NULL)
 636                         break;
 637                 channel->iob[cnt].state = BUF_STATE_FREE;
 638                 channel->iob[cnt].channel = channel;
 639                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 640                 channel->iob[cnt].rc = 0;
 641         }
 642         if (cnt < QETH_CMD_BUFFER_NO) {
 643                 while (cnt-- > 0)
 644                         kfree(channel->iob[cnt].data);
 645                 return -ENOMEM;
 646         }
 647         channel->buf_no = 0;
 648         channel->io_buf_no = 0;
 649         atomic_set(&channel->irq_pending, 0);
 650         spin_lock_init(&channel->iob_lock);
 651
 652         init_waitqueue_head(&channel->wait_q);
 653         return 0;
 654 }
 655
 656 static int qeth_set_thread_start_bit(struct qeth_card *card,
 657                 unsigned long thread)
 658 {
 659         unsigned long flags;
 660
 661         spin_lock_irqsave(&card->thread_mask_lock, flags);
 662         if (!(card->thread_allowed_mask & thread) ||
 663               (card->thread_start_mask & thread)) {
 664                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 665                 return -EPERM;
 666         }
 667         card->thread_start_mask |= thread;
 668         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 669         return 0;
 670 }
 671
 672 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 673 {
 674         unsigned long flags;
 675
 676         spin_lock_irqsave(&card->thread_mask_lock, flags);
 677         card->thread_start_mask &= ~thread;
 678         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 679         wake_up(&card->wait_q);
 680 }
 681 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 682
 683 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 684 {
 685         unsigned long flags;
 686
 687         spin_lock_irqsave(&card->thread_mask_lock, flags);
 688         card->thread_running_mask &= ~thread;
 689         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 690         wake_up(&card->wait_q);
 691 }
 692 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 693
 694 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 695 {
 696         unsigned long flags;
 697         int rc = 0;
 698
 699         spin_lock_irqsave(&card->thread_mask_lock, flags);
 700         if (card->thread_start_mask & thread) {
 701                 if ((card->thread_allowed_mask & thread) &&
 702                     !(card->thread_running_mask & thread)) {
 703                         rc = 1;
 704                         card->thread_start_mask &= ~thread;
 705                         card->thread_running_mask |= thread;
 706                 } else
 707                         rc = -EPERM;
 708         }
 709         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 710         return rc;
 711 }
 712
 713 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 714 {
 715         int rc = 0;
 716
 717         wait_event(card->wait_q,
 718                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 719         return rc;
 720 }
 721 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 722
 723 void qeth_schedule_recovery(struct qeth_card *card)
 724 {
 725         QETH_DBF_TEXT(TRACE, 2, "startrec");
 726         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 727                 schedule_work(&card->kernel_thread_starter);
 728 }
 729 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 730
 731 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 732 {
 733         int dstat, cstat;
 734         char *sense;
 735
 736         sense = (char *) irb->ecw;
 737         cstat = irb->scsw.cmd.cstat;
 738         dstat = irb->scsw.cmd.dstat;
 739
 740         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 741                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 742                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 743                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 744                 dev_warn(&cdev->dev, "The qeth device driver "
 745                         "failed to recover an error on the device\n");
 746                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 747                         dev_name(&cdev->dev), dstat, cstat);
 748                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 749                                 16, 1, irb, 64, 1);
 750                 return 1;
 751         }
 752
 753         if (dstat & DEV_STAT_UNIT_CHECK) {
 754                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 755                     SENSE_RESETTING_EVENT_FLAG) {
 756                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 757                         return 1;
 758                 }
 759                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 760                     SENSE_COMMAND_REJECT_FLAG) {
 761                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 762                         return 1;
 763                 }
 764                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 765                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 766                         return 1;
 767                 }
 768                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 769                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 770                         return 0;
 771                 }
 772                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 773                         return 1;
 774         }
 775         return 0;
 776 }
 777
 778 static long __qeth_check_irb_error(struct ccw_device *cdev,
 779                 unsigned long intparm, struct irb *irb)
 780 {
 781         if (!IS_ERR(irb))
 782                 return 0;
 783
 784         switch (PTR_ERR(irb)) {
 785         case -EIO:
 786                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 787                         dev_name(&cdev->dev));
 788                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 789                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 790                 break;
 791         case -ETIMEDOUT:
 792                 dev_warn(&cdev->dev, "A hardware operation timed out"
 793                         " on the device\n");
 794                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 795                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 796                 if (intparm == QETH_RCD_PARM) {
 797                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 798
 799                         if (card && (card->data.ccwdev == cdev)) {
 800                                 card->data.state = CH_STATE_DOWN;
 801                                 wake_up(&card->wait_q);
 802                         }
 803                 }
 804                 break;
 805         default:
 806                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 807                         dev_name(&cdev->dev), PTR_ERR(irb));
 808                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 809                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 810         }
 811         return PTR_ERR(irb);
 812 }
 813
 814 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 815                 struct irb *irb)
 816 {
 817         int rc;
 818         int cstat, dstat;
 819         struct qeth_cmd_buffer *buffer;
 820         struct qeth_channel *channel;
 821         struct qeth_card *card;
 822         struct qeth_cmd_buffer *iob;
 823         __u8 index;
 824
 825         QETH_DBF_TEXT(TRACE, 5, "irq");
 826
 827         if (__qeth_check_irb_error(cdev, intparm, irb))
 828                 return;
 829         cstat = irb->scsw.cmd.cstat;
 830         dstat = irb->scsw.cmd.dstat;
 831
 832         card = CARD_FROM_CDEV(cdev);
 833         if (!card)
 834                 return;
 835
 836         if (card->read.ccwdev == cdev) {
 837                 channel = &card->read;
 838                 QETH_DBF_TEXT(TRACE, 5, "read");
 839         } else if (card->write.ccwdev == cdev) {
 840                 channel = &card->write;
 841                 QETH_DBF_TEXT(TRACE, 5, "write");
 842         } else {
 843                 channel = &card->data;
 844                 QETH_DBF_TEXT(TRACE, 5, "data");
 845         }
 846         atomic_set(&channel->irq_pending, 0);
 847
 848         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 849                 channel->state = CH_STATE_STOPPED;
 850
 851         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 852                 channel->state = CH_STATE_HALTED;
 853
 854         /*let's wake up immediately on data channel*/
 855         if ((channel == &card->data) && (intparm != 0) &&
 856             (intparm != QETH_RCD_PARM))
 857                 goto out;
 858
 859         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 860                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 861                 /* we don't have to handle this further */
 862                 intparm = 0;
 863         }
 864         if (intparm == QETH_HALT_CHANNEL_PARM) {
 865                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 866                 /* we don't have to handle this further */
 867                 intparm = 0;
 868         }
 869         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 870             (dstat & DEV_STAT_UNIT_CHECK) ||
 871             (cstat)) {
 872                 if (irb->esw.esw0.erw.cons) {
 873                         dev_warn(&channel->ccwdev->dev,
 874                                 "The qeth device driver failed to recover "
 875                                 "an error on the device\n");
 876                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 877                                 "0x%X dstat 0x%X\n",
 878                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 879                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 880                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 881                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 882                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 883                 }
 884                 if (intparm == QETH_RCD_PARM) {
 885                         channel->state = CH_STATE_DOWN;
 886                         goto out;
 887                 }
 888                 rc = qeth_get_problem(cdev, irb);
 889                 if (rc) {
 890                         qeth_clear_ipacmd_list(card);
 891                         qeth_schedule_recovery(card);
 892                         goto out;
 893                 }
 894         }
 895
 896         if (intparm == QETH_RCD_PARM) {
 897                 channel->state = CH_STATE_RCD_DONE;
 898                 goto out;
 899         }
 900         if (intparm) {
 901                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 902                 buffer->state = BUF_STATE_PROCESSED;
 903         }
 904         if (channel == &card->data)
 905                 return;
 906         if (channel == &card->read &&
 907             channel->state == CH_STATE_UP)
 908                 qeth_issue_next_read(card);
 909
 910         iob = channel->iob;
 911         index = channel->buf_no;
 912         while (iob[index].state == BUF_STATE_PROCESSED) {
 913                 if (iob[index].callback != NULL)
 914                         iob[index].callback(channel, iob + index);
 915
 916                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 917         }
 918         channel->buf_no = index;
 919 out:
 920         wake_up(&card->wait_q);
 921         return;
 922 }
 923
 924 static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 925                  struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
 926 {
 927         int i;
 928         struct sk_buff *skb;
 929
 930         /* is PCI flag set on buffer? */
 931         if (buf->buffer->element[0].flags & 0x40)
 932                 atomic_dec(&queue->set_pci_flags_count);
 933
 934         if (!qeth_skip_skb) {
 935                 skb = skb_dequeue(&buf->skb_list);
 936                 while (skb) {
 937                         atomic_dec(&skb->users);
 938                         dev_kfree_skb_any(skb);
 939                         skb = skb_dequeue(&buf->skb_list);
 940                 }
 941         }
 942         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 943                 if (buf->buffer->element[i].addr && buf->is_header[i])
 944                         kmem_cache_free(qeth_core_header_cache,
 945                                 buf->buffer->element[i].addr);
 946                 buf->is_header[i] = 0;
 947                 buf->buffer->element[i].length = 0;
 948                 buf->buffer->element[i].addr = NULL;
 949                 buf->buffer->element[i].flags = 0;
 950         }
 951         buf->buffer->element[15].flags = 0;
 952         buf->next_element_to_fill = 0;
 953         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 954 }
 955
 956 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 957                 struct qeth_qdio_out_buffer *buf)
 958 {
 959         __qeth_clear_output_buffer(queue, buf, 0);
 960 }
 961
 962 void qeth_clear_qdio_buffers(struct qeth_card *card)
 963 {
 964         int i, j;
 965
 966         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 967         /* clear outbound buffers to free skbs */
 968         for (i = 0; i < card->qdio.no_out_queues; ++i)
 969                 if (card->qdio.out_qs[i]) {
 970                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 971                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 972                                                 &card->qdio.out_qs[i]->bufs[j]);
 973                 }
 974 }
 975 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 976
 977 static void qeth_free_buffer_pool(struct qeth_card *card)
 978 {
 979         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 980         int i = 0;
 981         QETH_DBF_TEXT(TRACE, 5, "freepool");
 982         list_for_each_entry_safe(pool_entry, tmp,
 983                                  &card->qdio.init_pool.entry_list, init_list){
 984                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 985                         free_page((unsigned long)pool_entry->elements[i]);
 986                 list_del(&pool_entry->init_list);
 987                 kfree(pool_entry);
 988         }
 989 }
 990
 991 static void qeth_free_qdio_buffers(struct qeth_card *card)
 992 {
 993         int i, j;
 994
 995         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
 996         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 997                 QETH_QDIO_UNINITIALIZED)
 998                 return;
 999         kfree(card->qdio.in_q);
1000         card->qdio.in_q = NULL;
1001         /* inbound buffer pool */
1002         qeth_free_buffer_pool(card);
1003         /* free outbound qdio_qs */
1004         if (card->qdio.out_qs) {
1005                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1006                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1007                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
1008                                                 &card->qdio.out_qs[i]->bufs[j]);
1009                         kfree(card->qdio.out_qs[i]);
1010                 }
1011                 kfree(card->qdio.out_qs);
1012                 card->qdio.out_qs = NULL;
1013         }
1014 }
1015
1016 static void qeth_clean_channel(struct qeth_channel *channel)
1017 {
1018         int cnt;
1019
1020         QETH_DBF_TEXT(SETUP, 2, "freech");
1021         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1022                 kfree(channel->iob[cnt].data);
1023 }
1024
1025 static void qeth_get_channel_path_desc(struct qeth_card *card)
1026 {
1027         struct ccw_device *ccwdev;
1028         struct channelPath_dsc {
1029                 u8 flags;
1030                 u8 lsn;
1031                 u8 desc;
1032                 u8 chpid;
1033                 u8 swla;
1034                 u8 zeroes;
1035                 u8 chla;
1036                 u8 chpp;
1037         } *chp_dsc;
1038
1039         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1040
1041         ccwdev = card->data.ccwdev;
1042         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1043         if (chp_dsc != NULL) {
1044                 /* CHPP field bit 6 == 1 -> single queue */
1045                 if ((chp_dsc->chpp & 0x02) == 0x02)
1046                         card->qdio.no_out_queues = 1;
1047                 card->info.func_level = 0x4100 + chp_dsc->desc;
1048                 kfree(chp_dsc);
1049         }
1050         if (card->qdio.no_out_queues == 1) {
1051                 card->qdio.default_out_queue = 0;
1052                 dev_info(&card->gdev->dev,
1053                         "Priority Queueing not supported\n");
1054         }
1055         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1056         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1057         return;
1058 }
1059
1060 static void qeth_init_qdio_info(struct qeth_card *card)
1061 {
1062         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1063         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1064         /* inbound */
1065         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1066         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1067         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1068         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1069         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1070 }
1071
1072 static void qeth_set_intial_options(struct qeth_card *card)
1073 {
1074         card->options.route4.type = NO_ROUTER;
1075         card->options.route6.type = NO_ROUTER;
1076         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1077         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1078         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1079         card->options.fake_broadcast = 0;
1080         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1081         card->options.performance_stats = 0;
1082         card->options.rx_sg_cb = QETH_RX_SG_CB;
1083         card->options.isolation = ISOLATION_MODE_NONE;
1084 }
1085
1086 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1087 {
1088         unsigned long flags;
1089         int rc = 0;
1090
1091         spin_lock_irqsave(&card->thread_mask_lock, flags);
1092         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1093                         (u8) card->thread_start_mask,
1094                         (u8) card->thread_allowed_mask,
1095                         (u8) card->thread_running_mask);
1096         rc = (card->thread_start_mask & thread);
1097         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1098         return rc;
1099 }
1100
1101 static void qeth_start_kernel_thread(struct work_struct *work)
1102 {
1103         struct qeth_card *card = container_of(work, struct qeth_card,
1104                                         kernel_thread_starter);
1105         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1106
1107         if (card->read.state != CH_STATE_UP &&
1108             card->write.state != CH_STATE_UP)
1109                 return;
1110         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1111                 kthread_run(card->discipline.recover, (void *) card,
1112                                 "qeth_recover");
1113 }
1114
1115 static int qeth_setup_card(struct qeth_card *card)
1116 {
1117
1118         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1119         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1120
1121         card->read.state  = CH_STATE_DOWN;
1122         card->write.state = CH_STATE_DOWN;
1123         card->data.state  = CH_STATE_DOWN;
1124         card->state = CARD_STATE_DOWN;
1125         card->lan_online = 0;
1126         card->use_hard_stop = 0;
1127         card->dev = NULL;
1128         spin_lock_init(&card->vlanlock);
1129         spin_lock_init(&card->mclock);
1130         card->vlangrp = NULL;
1131         spin_lock_init(&card->lock);
1132         spin_lock_init(&card->ip_lock);
1133         spin_lock_init(&card->thread_mask_lock);
1134         mutex_init(&card->conf_mutex);
1135         card->thread_start_mask = 0;
1136         card->thread_allowed_mask = 0;
1137         card->thread_running_mask = 0;
1138         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1139         INIT_LIST_HEAD(&card->ip_list);
1140         INIT_LIST_HEAD(card->ip_tbd_list);
1141         INIT_LIST_HEAD(&card->cmd_waiter_list);
1142         init_waitqueue_head(&card->wait_q);
1143         /* intial options */
1144         qeth_set_intial_options(card);
1145         /* IP address takeover */
1146         INIT_LIST_HEAD(&card->ipato.entries);
1147         card->ipato.enabled = 0;
1148         card->ipato.invert4 = 0;
1149         card->ipato.invert6 = 0;
1150         /* init QDIO stuff */
1151         qeth_init_qdio_info(card);
1152         return 0;
1153 }
1154
1155 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1156 {
1157         struct qeth_card *card = container_of(slr, struct qeth_card,
1158                                         qeth_service_level);
1159         if (card->info.mcl_level[0])
1160                 seq_printf(m, "qeth: %s firmware level %s\n",
1161                         CARD_BUS_ID(card), card->info.mcl_level);
1162 }
1163
1164 static struct qeth_card *qeth_alloc_card(void)
1165 {
1166         struct qeth_card *card;
1167
1168         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1169         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1170         if (!card)
1171                 goto out;
1172         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1173         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1174         if (!card->ip_tbd_list) {
1175                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1176                 goto out_card;
1177         }
1178         if (qeth_setup_channel(&card->read))
1179                 goto out_ip;
1180         if (qeth_setup_channel(&card->write))
1181                 goto out_channel;
1182         card->options.layer2 = -1;
1183         card->qeth_service_level.seq_print = qeth_core_sl_print;
1184         register_service_level(&card->qeth_service_level);
1185         return card;
1186
1187 out_channel:
1188         qeth_clean_channel(&card->read);
1189 out_ip:
1190         kfree(card->ip_tbd_list);
1191 out_card:
1192         kfree(card);
1193 out:
1194         return NULL;
1195 }
1196
1197 static int qeth_determine_card_type(struct qeth_card *card)
1198 {
1199         int i = 0;
1200
1201         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1202
1203         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1204         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1205         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1206                 if ((CARD_RDEV(card)->id.dev_type ==
1207                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1208                     (CARD_RDEV(card)->id.dev_model ==
1209                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1210                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1211                         card->qdio.no_out_queues =
1212                                 known_devices[i][QETH_QUEUE_NO_IND];
1213                         card->info.is_multicast_different =
1214                                 known_devices[i][QETH_MULTICAST_IND];
1215                         qeth_get_channel_path_desc(card);
1216                         return 0;
1217                 }
1218                 i++;
1219         }
1220         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1221         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1222                 "unknown type\n");
1223         return -ENOENT;
1224 }
1225
1226 static int qeth_clear_channel(struct qeth_channel *channel)
1227 {
1228         unsigned long flags;
1229         struct qeth_card *card;
1230         int rc;
1231
1232         QETH_DBF_TEXT(TRACE, 3, "clearch");
1233         card = CARD_FROM_CDEV(channel->ccwdev);
1234         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1235         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1236         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1237
1238         if (rc)
1239                 return rc;
1240         rc = wait_event_interruptible_timeout(card->wait_q,
1241                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1242         if (rc == -ERESTARTSYS)
1243                 return rc;
1244         if (channel->state != CH_STATE_STOPPED)
1245                 return -ETIME;
1246         channel->state = CH_STATE_DOWN;
1247         return 0;
1248 }
1249
1250 static int qeth_halt_channel(struct qeth_channel *channel)
1251 {
1252         unsigned long flags;
1253         struct qeth_card *card;
1254         int rc;
1255
1256         QETH_DBF_TEXT(TRACE, 3, "haltch");
1257         card = CARD_FROM_CDEV(channel->ccwdev);
1258         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1259         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1260         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1261
1262         if (rc)
1263                 return rc;
1264         rc = wait_event_interruptible_timeout(card->wait_q,
1265                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1266         if (rc == -ERESTARTSYS)
1267                 return rc;
1268         if (channel->state != CH_STATE_HALTED)
1269                 return -ETIME;
1270         return 0;
1271 }
1272
1273 static int qeth_halt_channels(struct qeth_card *card)
1274 {
1275         int rc1 = 0, rc2 = 0, rc3 = 0;
1276
1277         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1278         rc1 = qeth_halt_channel(&card->read);
1279         rc2 = qeth_halt_channel(&card->write);
1280         rc3 = qeth_halt_channel(&card->data);
1281         if (rc1)
1282                 return rc1;
1283         if (rc2)
1284                 return rc2;
1285         return rc3;
1286 }
1287
1288 static int qeth_clear_channels(struct qeth_card *card)
1289 {
1290         int rc1 = 0, rc2 = 0, rc3 = 0;
1291
1292         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1293         rc1 = qeth_clear_channel(&card->read);
1294         rc2 = qeth_clear_channel(&card->write);
1295         rc3 = qeth_clear_channel(&card->data);
1296         if (rc1)
1297                 return rc1;
1298         if (rc2)
1299                 return rc2;
1300         return rc3;
1301 }
1302
1303 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1304 {
1305         int rc = 0;
1306
1307         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1308         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1309
1310         if (halt)
1311                 rc = qeth_halt_channels(card);
1312         if (rc)
1313                 return rc;
1314         return qeth_clear_channels(card);
1315 }
1316
1317 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1318 {
1319         int rc = 0;
1320
1321         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1322         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1323                 QETH_QDIO_CLEANING)) {
1324         case QETH_QDIO_ESTABLISHED:
1325                 if (card->info.type == QETH_CARD_TYPE_IQD)
1326                         rc = qdio_shutdown(CARD_DDEV(card),
1327                                 QDIO_FLAG_CLEANUP_USING_HALT);
1328                 else
1329                         rc = qdio_shutdown(CARD_DDEV(card),
1330                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1331                 if (rc)
1332                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1333                 qdio_free(CARD_DDEV(card));
1334                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1335                 break;
1336         case QETH_QDIO_CLEANING:
1337                 return rc;
1338         default:
1339                 break;
1340         }
1341         rc = qeth_clear_halt_card(card, use_halt);
1342         if (rc)
1343                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1344         card->state = CARD_STATE_DOWN;
1345         return rc;
1346 }
1347 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1348
1349 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1350                                int *length)
1351 {
1352         struct ciw *ciw;
1353         char *rcd_buf;
1354         int ret;
1355         struct qeth_channel *channel = &card->data;
1356         unsigned long flags;
1357
1358         /*
1359          * scan for RCD command in extended SenseID data
1360          */
1361         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1362         if (!ciw || ciw->cmd == 0)
1363                 return -EOPNOTSUPP;
1364         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1365         if (!rcd_buf)
1366                 return -ENOMEM;
1367
1368         channel->ccw.cmd_code = ciw->cmd;
1369         channel->ccw.cda = (__u32) __pa(rcd_buf);
1370         channel->ccw.count = ciw->count;
1371         channel->ccw.flags = CCW_FLAG_SLI;
1372         channel->state = CH_STATE_RCD;
1373         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1374         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1375                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1376                                        QETH_RCD_TIMEOUT);
1377         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1378         if (!ret)
1379                 wait_event(card->wait_q,
1380                            (channel->state == CH_STATE_RCD_DONE ||
1381                             channel->state == CH_STATE_DOWN));
1382         if (channel->state == CH_STATE_DOWN)
1383                 ret = -EIO;
1384         else
1385                 channel->state = CH_STATE_DOWN;
1386         if (ret) {
1387                 kfree(rcd_buf);
1388                 *buffer = NULL;
1389                 *length = 0;
1390         } else {
1391                 *length = ciw->count;
1392                 *buffer = rcd_buf;
1393         }
1394         return ret;
1395 }
1396
1397 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1398 {
1399         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1400         card->info.chpid = prcd[30];
1401         card->info.unit_addr2 = prcd[31];
1402         card->info.cula = prcd[63];
1403         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1404                                (prcd[0x11] == _ascebc['M']));
1405 }
1406
1407 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1408 {
1409         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1410
1411         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1412                 card->info.blkt.time_total = 250;
1413                 card->info.blkt.inter_packet = 5;
1414                 card->info.blkt.inter_packet_jumbo = 15;
1415         } else {
1416                 card->info.blkt.time_total = 0;
1417                 card->info.blkt.inter_packet = 0;
1418                 card->info.blkt.inter_packet_jumbo = 0;
1419         }
1420 }
1421
1422 static void qeth_init_tokens(struct qeth_card *card)
1423 {
1424         card->token.issuer_rm_w = 0x00010103UL;
1425         card->token.cm_filter_w = 0x00010108UL;
1426         card->token.cm_connection_w = 0x0001010aUL;
1427         card->token.ulp_filter_w = 0x0001010bUL;
1428         card->token.ulp_connection_w = 0x0001010dUL;
1429 }
1430
1431 static void qeth_init_func_level(struct qeth_card *card)
1432 {
1433         switch (card->info.type) {
1434         case QETH_CARD_TYPE_IQD:
1435                 if (card->ipato.enabled)
1436                         card->info.func_level =
1437                                 QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1438                 else
1439                         card->info.func_level =
1440                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1441                 break;
1442         case QETH_CARD_TYPE_OSD:
1443                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1444                 break;
1445         default:
1446                 break;
1447         }
1448 }
1449
1450 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1451                 void (*idx_reply_cb)(struct qeth_channel *,
1452                         struct qeth_cmd_buffer *))
1453 {
1454         struct qeth_cmd_buffer *iob;
1455         unsigned long flags;
1456         int rc;
1457         struct qeth_card *card;
1458
1459         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1460         card = CARD_FROM_CDEV(channel->ccwdev);
1461         iob = qeth_get_buffer(channel);
1462         iob->callback = idx_reply_cb;
1463         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1464         channel->ccw.count = QETH_BUFSIZE;
1465         channel->ccw.cda = (__u32) __pa(iob->data);
1466
1467         wait_event(card->wait_q,
1468                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1469         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1470         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1471         rc = ccw_device_start(channel->ccwdev,
1472                               &channel->ccw, (addr_t) iob, 0, 0);
1473         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1474
1475         if (rc) {
1476                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1477                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1478                 atomic_set(&channel->irq_pending, 0);
1479                 wake_up(&card->wait_q);
1480                 return rc;
1481         }
1482         rc = wait_event_interruptible_timeout(card->wait_q,
1483                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1484         if (rc == -ERESTARTSYS)
1485                 return rc;
1486         if (channel->state != CH_STATE_UP) {
1487                 rc = -ETIME;
1488                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1489                 qeth_clear_cmd_buffers(channel);
1490         } else
1491                 rc = 0;
1492         return rc;
1493 }
1494
1495 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1496                 void (*idx_reply_cb)(struct qeth_channel *,
1497                         struct qeth_cmd_buffer *))
1498 {
1499         struct qeth_card *card;
1500         struct qeth_cmd_buffer *iob;
1501         unsigned long flags;
1502         __u16 temp;
1503         __u8 tmp;
1504         int rc;
1505         struct ccw_dev_id temp_devid;
1506
1507         card = CARD_FROM_CDEV(channel->ccwdev);
1508
1509         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1510
1511         iob = qeth_get_buffer(channel);
1512         iob->callback = idx_reply_cb;
1513         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1514         channel->ccw.count = IDX_ACTIVATE_SIZE;
1515         channel->ccw.cda = (__u32) __pa(iob->data);
1516         if (channel == &card->write) {
1517                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1518                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1519                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1520                 card->seqno.trans_hdr++;
1521         } else {
1522                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1523                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1524                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1525         }
1526         tmp = ((__u8)card->info.portno) | 0x80;
1527         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1528         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1529                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1530         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1531                &card->info.func_level, sizeof(__u16));
1532         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1533         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1534         temp = (card->info.cula << 8) + card->info.unit_addr2;
1535         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1536
1537         wait_event(card->wait_q,
1538                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1539         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1540         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1541         rc = ccw_device_start(channel->ccwdev,
1542                               &channel->ccw, (addr_t) iob, 0, 0);
1543         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1544
1545         if (rc) {
1546                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1547                         rc);
1548                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1549                 atomic_set(&channel->irq_pending, 0);
1550                 wake_up(&card->wait_q);
1551                 return rc;
1552         }
1553         rc = wait_event_interruptible_timeout(card->wait_q,
1554                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1555         if (rc == -ERESTARTSYS)
1556                 return rc;
1557         if (channel->state != CH_STATE_ACTIVATING) {
1558                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1559                         " failed to recover an error on the device\n");
1560                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1561                         dev_name(&channel->ccwdev->dev));
1562                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1563                 qeth_clear_cmd_buffers(channel);
1564                 return -ETIME;
1565         }
1566         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1567 }
1568
1569 static int qeth_peer_func_level(int level)
1570 {
1571         if ((level & 0xff) == 8)
1572                 return (level & 0xff) + 0x400;
1573         if (((level >> 8) & 3) == 1)
1574                 return (level & 0xff) + 0x200;
1575         return level;
1576 }
1577
1578 static void qeth_idx_write_cb(struct qeth_channel *channel,
1579                 struct qeth_cmd_buffer *iob)
1580 {
1581         struct qeth_card *card;
1582         __u16 temp;
1583
1584         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1585
1586         if (channel->state == CH_STATE_DOWN) {
1587                 channel->state = CH_STATE_ACTIVATING;
1588                 goto out;
1589         }
1590         card = CARD_FROM_CDEV(channel->ccwdev);
1591
1592         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1593                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1594                         dev_err(&card->write.ccwdev->dev,
1595                                 "The adapter is used exclusively by another "
1596                                 "host\n");
1597                 else
1598                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1599                                 " negative reply\n",
1600                                 dev_name(&card->write.ccwdev->dev));
1601                 goto out;
1602         }
1603         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1604         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1605                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1606                         "function level mismatch (sent: 0x%x, received: "
1607                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1608                         card->info.func_level, temp);
1609                 goto out;
1610         }
1611         channel->state = CH_STATE_UP;
1612 out:
1613         qeth_release_buffer(channel, iob);
1614 }
1615
1616 static void qeth_idx_read_cb(struct qeth_channel *channel,
1617                 struct qeth_cmd_buffer *iob)
1618 {
1619         struct qeth_card *card;
1620         __u16 temp;
1621
1622         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1623         if (channel->state == CH_STATE_DOWN) {
1624                 channel->state = CH_STATE_ACTIVATING;
1625                 goto out;
1626         }
1627
1628         card = CARD_FROM_CDEV(channel->ccwdev);
1629         if (qeth_check_idx_response(card, iob->data))
1630                         goto out;
1631
1632         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1633                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1634                 case QETH_IDX_ACT_ERR_EXCL:
1635                         dev_err(&card->write.ccwdev->dev,
1636                                 "The adapter is used exclusively by another "
1637                                 "host\n");
1638                         break;
1639                 case QETH_IDX_ACT_ERR_AUTH:
1640                         dev_err(&card->read.ccwdev->dev,
1641                                 "Setting the device online failed because of "
1642                                 "insufficient LPAR authorization\n");
1643                         break;
1644                 default:
1645                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1646                                 " negative reply\n",
1647                                 dev_name(&card->read.ccwdev->dev));
1648                 }
1649                 goto out;
1650         }
1651
1652 /**
1653  *  * temporary fix for microcode bug
1654  *   * to revert it,replace OR by AND
1655  *    */
1656         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1657              (card->info.type == QETH_CARD_TYPE_OSD))
1658                 card->info.portname_required = 1;
1659
1660         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1661         if (temp != qeth_peer_func_level(card->info.func_level)) {
1662                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1663                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1664                         dev_name(&card->read.ccwdev->dev),
1665                         card->info.func_level, temp);
1666                 goto out;
1667         }
1668         memcpy(&card->token.issuer_rm_r,
1669                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1670                QETH_MPC_TOKEN_LENGTH);
1671         memcpy(&card->info.mcl_level[0],
1672                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1673         channel->state = CH_STATE_UP;
1674 out:
1675         qeth_release_buffer(channel, iob);
1676 }
1677
1678 void qeth_prepare_control_data(struct qeth_card *card, int len,
1679                 struct qeth_cmd_buffer *iob)
1680 {
1681         qeth_setup_ccw(&card->write, iob->data, len);
1682         iob->callback = qeth_release_buffer;
1683
1684         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1685                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1686         card->seqno.trans_hdr++;
1687         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1688                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1689         card->seqno.pdu_hdr++;
1690         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1691                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1692         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1693 }
1694 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1695
1696 int qeth_send_control_data(struct qeth_card *card, int len,
1697                 struct qeth_cmd_buffer *iob,
1698                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1699                         unsigned long),
1700                 void *reply_param)
1701 {
1702         int rc;
1703         unsigned long flags;
1704         struct qeth_reply *reply = NULL;
1705         unsigned long timeout, event_timeout;
1706         struct qeth_ipa_cmd *cmd;
1707
1708         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1709
1710         reply = qeth_alloc_reply(card);
1711         if (!reply) {
1712                 return -ENOMEM;
1713         }
1714         reply->callback = reply_cb;
1715         reply->param = reply_param;
1716         if (card->state == CARD_STATE_DOWN)
1717                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1718         else
1719                 reply->seqno = card->seqno.ipa++;
1720         init_waitqueue_head(&reply->wait_q);
1721         spin_lock_irqsave(&card->lock, flags);
1722         list_add_tail(&reply->list, &card->cmd_waiter_list);
1723         spin_unlock_irqrestore(&card->lock, flags);
1724         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1725
1726         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1727         qeth_prepare_control_data(card, len, iob);
1728
1729         if (IS_IPA(iob->data))
1730                 event_timeout = QETH_IPA_TIMEOUT;
1731         else
1732                 event_timeout = QETH_TIMEOUT;
1733         timeout = jiffies + event_timeout;
1734
1735         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1736         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1737         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1738                               (addr_t) iob, 0, 0);
1739         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1740         if (rc) {
1741                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1742                         "ccw_device_start rc = %i\n",
1743                         dev_name(&card->write.ccwdev->dev), rc);
1744                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1745                 spin_lock_irqsave(&card->lock, flags);
1746                 list_del_init(&reply->list);
1747                 qeth_put_reply(reply);
1748                 spin_unlock_irqrestore(&card->lock, flags);
1749                 qeth_release_buffer(iob->channel, iob);
1750                 atomic_set(&card->write.irq_pending, 0);
1751                 wake_up(&card->wait_q);
1752                 return rc;
1753         }
1754
1755         /* we have only one long running ipassist, since we can ensure
1756            process context of this command we can sleep */
1757         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1758         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1759             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1760                 if (!wait_event_timeout(reply->wait_q,
1761                     atomic_read(&reply->received), event_timeout))
1762                         goto time_err;
1763         } else {
1764                 while (!atomic_read(&reply->received)) {
1765                         if (time_after(jiffies, timeout))
1766                                 goto time_err;
1767                         cpu_relax();
1768                 };
1769         }
1770
1771         rc = reply->rc;
1772         qeth_put_reply(reply);
1773         return rc;
1774
1775 time_err:
1776         spin_lock_irqsave(&reply->card->lock, flags);
1777         list_del_init(&reply->list);
1778         spin_unlock_irqrestore(&reply->card->lock, flags);
1779         reply->rc = -ETIME;
1780         atomic_inc(&reply->received);
1781         wake_up(&reply->wait_q);
1782         rc = reply->rc;
1783         qeth_put_reply(reply);
1784         return rc;
1785 }
1786 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1787
1788 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1789                 unsigned long data)
1790 {
1791         struct qeth_cmd_buffer *iob;
1792
1793         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1794
1795         iob = (struct qeth_cmd_buffer *) data;
1796         memcpy(&card->token.cm_filter_r,
1797                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1798                QETH_MPC_TOKEN_LENGTH);
1799         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1800         return 0;
1801 }
1802
1803 static int qeth_cm_enable(struct qeth_card *card)
1804 {
1805         int rc;
1806         struct qeth_cmd_buffer *iob;
1807
1808         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1809
1810         iob = qeth_wait_for_buffer(&card->write);
1811         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1812         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1813                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1814         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1815                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1816
1817         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1818                                     qeth_cm_enable_cb, NULL);
1819         return rc;
1820 }
1821
1822 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1823                 unsigned long data)
1824 {
1825
1826         struct qeth_cmd_buffer *iob;
1827
1828         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1829
1830         iob = (struct qeth_cmd_buffer *) data;
1831         memcpy(&card->token.cm_connection_r,
1832                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1833                QETH_MPC_TOKEN_LENGTH);
1834         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1835         return 0;
1836 }
1837
1838 static int qeth_cm_setup(struct qeth_card *card)
1839 {
1840         int rc;
1841         struct qeth_cmd_buffer *iob;
1842
1843         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1844
1845         iob = qeth_wait_for_buffer(&card->write);
1846         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1847         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1848                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1849         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1850                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1851         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1852                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1853         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1854                                     qeth_cm_setup_cb, NULL);
1855         return rc;
1856
1857 }
1858
1859 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1860 {
1861         switch (card->info.type) {
1862         case QETH_CARD_TYPE_UNKNOWN:
1863                 return 1500;
1864         case QETH_CARD_TYPE_IQD:
1865                 return card->info.max_mtu;
1866         case QETH_CARD_TYPE_OSD:
1867                 switch (card->info.link_type) {
1868                 case QETH_LINK_TYPE_HSTR:
1869                 case QETH_LINK_TYPE_LANE_TR:
1870                         return 2000;
1871                 default:
1872                         return 1492;
1873                 }
1874         case QETH_CARD_TYPE_OSM:
1875         case QETH_CARD_TYPE_OSX:
1876                 return 1492;
1877         default:
1878                 return 1500;
1879         }
1880 }
1881
1882 static inline int qeth_get_max_mtu_for_card(int cardtype)
1883 {
1884         switch (cardtype) {
1885
1886         case QETH_CARD_TYPE_UNKNOWN:
1887         case QETH_CARD_TYPE_OSD:
1888         case QETH_CARD_TYPE_OSN:
1889         case QETH_CARD_TYPE_OSM:
1890         case QETH_CARD_TYPE_OSX:
1891                 return 61440;
1892         case QETH_CARD_TYPE_IQD:
1893                 return 57344;
1894         default:
1895                 return 1500;
1896         }
1897 }
1898
1899 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1900 {
1901         switch (cardtype) {
1902         case QETH_CARD_TYPE_IQD:
1903                 return 1;
1904         default:
1905                 return 0;
1906         }
1907 }
1908
1909 static inline int qeth_get_mtu_outof_framesize(int framesize)
1910 {
1911         switch (framesize) {
1912         case 0x4000:
1913                 return 8192;
1914         case 0x6000:
1915                 return 16384;
1916         case 0xa000:
1917                 return 32768;
1918         case 0xffff:
1919                 return 57344;
1920         default:
1921                 return 0;
1922         }
1923 }
1924
1925 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1926 {
1927         switch (card->info.type) {
1928         case QETH_CARD_TYPE_OSD:
1929         case QETH_CARD_TYPE_OSM:
1930         case QETH_CARD_TYPE_OSX:
1931                 return ((mtu >= 576) && (mtu <= 61440));
1932         case QETH_CARD_TYPE_IQD:
1933                 return ((mtu >= 576) &&
1934                         (mtu <= card->info.max_mtu + 4096 - 32));
1935         case QETH_CARD_TYPE_OSN:
1936         case QETH_CARD_TYPE_UNKNOWN:
1937         default:
1938                 return 1;
1939         }
1940 }
1941
1942 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1943                 unsigned long data)
1944 {
1945
1946         __u16 mtu, framesize;
1947         __u16 len;
1948         __u8 link_type;
1949         struct qeth_cmd_buffer *iob;
1950
1951         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1952
1953         iob = (struct qeth_cmd_buffer *) data;
1954         memcpy(&card->token.ulp_filter_r,
1955                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1956                QETH_MPC_TOKEN_LENGTH);
1957         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1958                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1959                 mtu = qeth_get_mtu_outof_framesize(framesize);
1960                 if (!mtu) {
1961                         iob->rc = -EINVAL;
1962                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1963                         return 0;
1964                 }
1965                 card->info.max_mtu = mtu;
1966                 card->info.initial_mtu = mtu;
1967                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1968         } else {
1969                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1970                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1971                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1972         }
1973
1974         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1975         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1976                 memcpy(&link_type,
1977                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1978                 card->info.link_type = link_type;
1979         } else
1980                 card->info.link_type = 0;
1981         QETH_DBF_TEXT_(SETUP, 2, "link%d", link_type);
1982         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1983         return 0;
1984 }
1985
1986 static int qeth_ulp_enable(struct qeth_card *card)
1987 {
1988         int rc;
1989         char prot_type;
1990         struct qeth_cmd_buffer *iob;
1991
1992         /*FIXME: trace view callbacks*/
1993         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1994
1995         iob = qeth_wait_for_buffer(&card->write);
1996         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1997
1998         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1999                 (__u8) card->info.portno;
2000         if (card->options.layer2)
2001                 if (card->info.type == QETH_CARD_TYPE_OSN)
2002                         prot_type = QETH_PROT_OSN2;
2003                 else
2004                         prot_type = QETH_PROT_LAYER2;
2005         else
2006                 prot_type = QETH_PROT_TCPIP;
2007
2008         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2009         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2010                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2011         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2012                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2013         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2014                card->info.portname, 9);
2015         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2016                                     qeth_ulp_enable_cb, NULL);
2017         return rc;
2018
2019 }
2020
2021 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2022                 unsigned long data)
2023 {
2024         struct qeth_cmd_buffer *iob;
2025         int rc = 0;
2026
2027         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2028
2029         iob = (struct qeth_cmd_buffer *) data;
2030         memcpy(&card->token.ulp_connection_r,
2031                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2032                QETH_MPC_TOKEN_LENGTH);
2033         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2034                      3)) {
2035                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2036                 dev_err(&card->gdev->dev, "A connection could not be "
2037                         "established because of an OLM limit\n");
2038                 rc = -EMLINK;
2039         }
2040         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2041         return rc;
2042 }
2043
2044 static int qeth_ulp_setup(struct qeth_card *card)
2045 {
2046         int rc;
2047         __u16 temp;
2048         struct qeth_cmd_buffer *iob;
2049         struct ccw_dev_id dev_id;
2050
2051         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2052
2053         iob = qeth_wait_for_buffer(&card->write);
2054         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2055
2056         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2057                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2058         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2059                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2060         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2061                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2062
2063         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2064         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2065         temp = (card->info.cula << 8) + card->info.unit_addr2;
2066         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2067         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2068                                     qeth_ulp_setup_cb, NULL);
2069         return rc;
2070 }
2071
2072 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2073 {
2074         int i, j;
2075
2076         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2077
2078         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2079                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2080                 return 0;
2081
2082         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2083                                   GFP_KERNEL);
2084         if (!card->qdio.in_q)
2085                 goto out_nomem;
2086         QETH_DBF_TEXT(SETUP, 2, "inq");
2087         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2088         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2089         /* give inbound qeth_qdio_buffers their qdio_buffers */
2090         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2091                 card->qdio.in_q->bufs[i].buffer =
2092                         &card->qdio.in_q->qdio_bufs[i];
2093         /* inbound buffer pool */
2094         if (qeth_alloc_buffer_pool(card))
2095                 goto out_freeinq;
2096         /* outbound */
2097         card->qdio.out_qs =
2098                 kmalloc(card->qdio.no_out_queues *
2099                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2100         if (!card->qdio.out_qs)
2101                 goto out_freepool;
2102         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2103                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2104                                                GFP_KERNEL);
2105                 if (!card->qdio.out_qs[i])
2106                         goto out_freeoutq;
2107                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2108                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2109                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2110                 card->qdio.out_qs[i]->queue_no = i;
2111                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2112                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2113                         card->qdio.out_qs[i]->bufs[j].buffer =
2114                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2115                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2116                                             skb_list);
2117                         lockdep_set_class(
2118                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2119                                 &qdio_out_skb_queue_key);
2120                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2121                 }
2122         }
2123         return 0;
2124
2125 out_freeoutq:
2126         while (i > 0)
2127                 kfree(card->qdio.out_qs[--i]);
2128         kfree(card->qdio.out_qs);
2129         card->qdio.out_qs = NULL;
2130 out_freepool:
2131         qeth_free_buffer_pool(card);
2132 out_freeinq:
2133         kfree(card->qdio.in_q);
2134         card->qdio.in_q = NULL;
2135 out_nomem:
2136         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2137         return -ENOMEM;
2138 }
2139
2140 static void qeth_create_qib_param_field(struct qeth_card *card,
2141                 char *param_field)
2142 {
2143
2144         param_field[0] = _ascebc['P'];
2145         param_field[1] = _ascebc['C'];
2146         param_field[2] = _ascebc['I'];
2147         param_field[3] = _ascebc['T'];
2148         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2149         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2150         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2151 }
2152
2153 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2154                 char *param_field)
2155 {
2156         param_field[16] = _ascebc['B'];
2157         param_field[17] = _ascebc['L'];
2158         param_field[18] = _ascebc['K'];
2159         param_field[19] = _ascebc['T'];
2160         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2161         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2162         *((unsigned int *) (&param_field[28])) =
2163                 card->info.blkt.inter_packet_jumbo;
2164 }
2165
2166 static int qeth_qdio_activate(struct qeth_card *card)
2167 {
2168         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2169         return qdio_activate(CARD_DDEV(card));
2170 }
2171
2172 static int qeth_dm_act(struct qeth_card *card)
2173 {
2174         int rc;
2175         struct qeth_cmd_buffer *iob;
2176
2177         QETH_DBF_TEXT(SETUP, 2, "dmact");
2178
2179         iob = qeth_wait_for_buffer(&card->write);
2180         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2181
2182         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2183                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2184         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2185                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2186         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2187         return rc;
2188 }
2189
2190 static int qeth_mpc_initialize(struct qeth_card *card)
2191 {
2192         int rc;
2193
2194         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2195
2196         rc = qeth_issue_next_read(card);
2197         if (rc) {
2198                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2199                 return rc;
2200         }
2201         rc = qeth_cm_enable(card);
2202         if (rc) {
2203                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2204                 goto out_qdio;
2205         }
2206         rc = qeth_cm_setup(card);
2207         if (rc) {
2208                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2209                 goto out_qdio;
2210         }
2211         rc = qeth_ulp_enable(card);
2212         if (rc) {
2213                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2214                 goto out_qdio;
2215         }
2216         rc = qeth_ulp_setup(card);
2217         if (rc) {
2218                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2219                 goto out_qdio;
2220         }
2221         rc = qeth_alloc_qdio_buffers(card);
2222         if (rc) {
2223                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2224                 goto out_qdio;
2225         }
2226         rc = qeth_qdio_establish(card);
2227         if (rc) {
2228                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2229                 qeth_free_qdio_buffers(card);
2230                 goto out_qdio;
2231         }
2232         rc = qeth_qdio_activate(card);
2233         if (rc) {
2234                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2235                 goto out_qdio;
2236         }
2237         rc = qeth_dm_act(card);
2238         if (rc) {
2239                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2240                 goto out_qdio;
2241         }
2242
2243         return 0;
2244 out_qdio:
2245         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2246         return rc;
2247 }
2248
2249 static void qeth_print_status_with_portname(struct qeth_card *card)
2250 {
2251         char dbf_text[15];
2252         int i;
2253
2254         sprintf(dbf_text, "%s", card->info.portname + 1);
2255         for (i = 0; i < 8; i++)
2256                 dbf_text[i] =
2257                         (char) _ebcasc[(__u8) dbf_text[i]];
2258         dbf_text[8] = 0;
2259         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2260                "with link type %s (portname: %s)\n",
2261                qeth_get_cardname(card),
2262                (card->info.mcl_level[0]) ? " (level: " : "",
2263                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2264                (card->info.mcl_level[0]) ? ")" : "",
2265                qeth_get_cardname_short(card),
2266                dbf_text);
2267
2268 }
2269
2270 static void qeth_print_status_no_portname(struct qeth_card *card)
2271 {
2272         if (card->info.portname[0])
2273                 dev_info(&card->gdev->dev, "Device is a%s "
2274                        "card%s%s%s\nwith link type %s "
2275                        "(no portname needed by interface).\n",
2276                        qeth_get_cardname(card),
2277                        (card->info.mcl_level[0]) ? " (level: " : "",
2278                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2279                        (card->info.mcl_level[0]) ? ")" : "",
2280                        qeth_get_cardname_short(card));
2281         else
2282                 dev_info(&card->gdev->dev, "Device is a%s "
2283                        "card%s%s%s\nwith link type %s.\n",
2284                        qeth_get_cardname(card),
2285                        (card->info.mcl_level[0]) ? " (level: " : "",
2286                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2287                        (card->info.mcl_level[0]) ? ")" : "",
2288                        qeth_get_cardname_short(card));
2289 }
2290
2291 void qeth_print_status_message(struct qeth_card *card)
2292 {
2293         switch (card->info.type) {
2294         case QETH_CARD_TYPE_OSD:
2295         case QETH_CARD_TYPE_OSM:
2296         case QETH_CARD_TYPE_OSX:
2297                 /* VM will use a non-zero first character
2298                  * to indicate a HiperSockets like reporting
2299                  * of the level OSA sets the first character to zero
2300                  * */
2301                 if (!card->info.mcl_level[0]) {
2302                         sprintf(card->info.mcl_level, "%02x%02x",
2303                                 card->info.mcl_level[2],
2304                                 card->info.mcl_level[3]);
2305
2306                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2307                         break;
2308                 }
2309                 /* fallthrough */
2310         case QETH_CARD_TYPE_IQD:
2311                 if ((card->info.guestlan) ||
2312                     (card->info.mcl_level[0] & 0x80)) {
2313                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2314                                 card->info.mcl_level[0]];
2315                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2316                                 card->info.mcl_level[1]];
2317                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2318                                 card->info.mcl_level[2]];
2319                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2320                                 card->info.mcl_level[3]];
2321                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2322                 }
2323                 break;
2324         default:
2325                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2326         }
2327         if (card->info.portname_required)
2328                 qeth_print_status_with_portname(card);
2329         else
2330                 qeth_print_status_no_portname(card);
2331 }
2332 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2333
2334 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2335 {
2336         struct qeth_buffer_pool_entry *entry;
2337
2338         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2339
2340         list_for_each_entry(entry,
2341                             &card->qdio.init_pool.entry_list, init_list) {
2342                 qeth_put_buffer_pool_entry(card, entry);
2343         }
2344 }
2345
2346 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2347                 struct qeth_card *card)
2348 {
2349         struct list_head *plh;
2350         struct qeth_buffer_pool_entry *entry;
2351         int i, free;
2352         struct page *page;
2353
2354         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2355                 return NULL;
2356
2357         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2358                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2359                 free = 1;
2360                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2361                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2362                                 free = 0;
2363                                 break;
2364                         }
2365                 }
2366                 if (free) {
2367                         list_del_init(&entry->list);
2368                         return entry;
2369                 }
2370         }
2371
2372         /* no free buffer in pool so take first one and swap pages */
2373         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2374                         struct qeth_buffer_pool_entry, list);
2375         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2376                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2377                         page = alloc_page(GFP_ATOMIC);
2378                         if (!page) {
2379                                 return NULL;
2380                         } else {
2381                                 free_page((unsigned long)entry->elements[i]);
2382                                 entry->elements[i] = page_address(page);
2383                                 if (card->options.performance_stats)
2384                                         card->perf_stats.sg_alloc_page_rx++;
2385                         }
2386                 }
2387         }
2388         list_del_init(&entry->list);
2389         return entry;
2390 }
2391
2392 static int qeth_init_input_buffer(struct qeth_card *card,
2393                 struct qeth_qdio_buffer *buf)
2394 {
2395         struct qeth_buffer_pool_entry *pool_entry;
2396         int i;
2397
2398         pool_entry = qeth_find_free_buffer_pool_entry(card);
2399         if (!pool_entry)
2400                 return 1;
2401
2402         /*
2403          * since the buffer is accessed only from the input_tasklet
2404          * there shouldn't be a need to synchronize; also, since we use
2405          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2406          * buffers
2407          */
2408
2409         buf->pool_entry = pool_entry;
2410         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2411                 buf->buffer->element[i].length = PAGE_SIZE;
2412                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2413                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2414                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2415                 else
2416                         buf->buffer->element[i].flags = 0;
2417         }
2418         return 0;
2419 }
2420
2421 int qeth_init_qdio_queues(struct qeth_card *card)
2422 {
2423         int i, j;
2424         int rc;
2425
2426         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2427
2428         /* inbound queue */
2429         memset(card->qdio.in_q->qdio_bufs, 0,
2430                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2431         qeth_initialize_working_pool_list(card);
2432         /*give only as many buffers to hardware as we have buffer pool entries*/
2433         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2434                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2435         card->qdio.in_q->next_buf_to_init =
2436                 card->qdio.in_buf_pool.buf_count - 1;
2437         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2438                      card->qdio.in_buf_pool.buf_count - 1);
2439         if (rc) {
2440                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2441                 return rc;
2442         }
2443         /* outbound queue */
2444         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2445                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2446                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2447                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2448                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2449                                         &card->qdio.out_qs[i]->bufs[j]);
2450                 }
2451                 card->qdio.out_qs[i]->card = card;
2452                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2453                 card->qdio.out_qs[i]->do_pack = 0;
2454                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2455                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2456                 atomic_set(&card->qdio.out_qs[i]->state,
2457                            QETH_OUT_Q_UNLOCKED);
2458         }
2459         return 0;
2460 }
2461 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2462
2463 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2464 {
2465         switch (link_type) {
2466         case QETH_LINK_TYPE_HSTR:
2467                 return 2;
2468         default:
2469                 return 1;
2470         }
2471 }
2472
2473 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2474                 struct qeth_ipa_cmd *cmd, __u8 command,
2475                 enum qeth_prot_versions prot)
2476 {
2477         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2478         cmd->hdr.command = command;
2479         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2480         cmd->hdr.seqno = card->seqno.ipa;
2481         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2482         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2483         if (card->options.layer2)
2484                 cmd->hdr.prim_version_no = 2;
2485         else
2486                 cmd->hdr.prim_version_no = 1;
2487         cmd->hdr.param_count = 1;
2488         cmd->hdr.prot_version = prot;
2489         cmd->hdr.ipa_supported = 0;
2490         cmd->hdr.ipa_enabled = 0;
2491 }
2492
2493 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2494                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2495 {
2496         struct qeth_cmd_buffer *iob;
2497         struct qeth_ipa_cmd *cmd;
2498
2499         iob = qeth_wait_for_buffer(&card->write);
2500         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2501         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2502
2503         return iob;
2504 }
2505 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2506
2507 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2508                 char prot_type)
2509 {
2510         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2511         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2512         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2513                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2514 }
2515 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2516
2517 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2518                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2519                         unsigned long),
2520                 void *reply_param)
2521 {
2522         int rc;
2523         char prot_type;
2524
2525         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2526
2527         if (card->options.layer2)
2528                 if (card->info.type == QETH_CARD_TYPE_OSN)
2529                         prot_type = QETH_PROT_OSN2;
2530                 else
2531                         prot_type = QETH_PROT_LAYER2;
2532         else
2533                 prot_type = QETH_PROT_TCPIP;
2534         qeth_prepare_ipa_cmd(card, iob, prot_type);
2535         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2536                                                 iob, reply_cb, reply_param);
2537         return rc;
2538 }
2539 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2540
2541 static int qeth_send_startstoplan(struct qeth_card *card,
2542                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2543 {
2544         int rc;
2545         struct qeth_cmd_buffer *iob;
2546
2547         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2548         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2549
2550         return rc;
2551 }
2552
2553 int qeth_send_startlan(struct qeth_card *card)
2554 {
2555         int rc;
2556
2557         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2558
2559         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2560         return rc;
2561 }
2562 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2563
2564 int qeth_send_stoplan(struct qeth_card *card)
2565 {
2566         int rc = 0;
2567
2568         /*
2569          * TODO: according to the IPA format document page 14,
2570          * TCP/IP (we!) never issue a STOPLAN
2571          * is this right ?!?
2572          */
2573         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2574
2575         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2576         return rc;
2577 }
2578 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2579
2580 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2581                 struct qeth_reply *reply, unsigned long data)
2582 {
2583         struct qeth_ipa_cmd *cmd;
2584
2585         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2586
2587         cmd = (struct qeth_ipa_cmd *) data;
2588         if (cmd->hdr.return_code == 0)
2589                 cmd->hdr.return_code =
2590                         cmd->data.setadapterparms.hdr.return_code;
2591         return 0;
2592 }
2593 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2594
2595 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2596                 struct qeth_reply *reply, unsigned long data)
2597 {
2598         struct qeth_ipa_cmd *cmd;
2599
2600         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2601
2602         cmd = (struct qeth_ipa_cmd *) data;
2603         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2604                 card->info.link_type =
2605                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2606                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2607         }
2608         card->options.adp.supported_funcs =
2609                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2610         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2611 }
2612
2613 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2614                 __u32 command, __u32 cmdlen)
2615 {
2616         struct qeth_cmd_buffer *iob;
2617         struct qeth_ipa_cmd *cmd;
2618
2619         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2620                                      QETH_PROT_IPV4);
2621         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2622         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2623         cmd->data.setadapterparms.hdr.command_code = command;
2624         cmd->data.setadapterparms.hdr.used_total = 1;
2625         cmd->data.setadapterparms.hdr.seq_no = 1;
2626
2627         return iob;
2628 }
2629 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2630
2631 int qeth_query_setadapterparms(struct qeth_card *card)
2632 {
2633         int rc;
2634         struct qeth_cmd_buffer *iob;
2635
2636         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2637         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2638                                    sizeof(struct qeth_ipacmd_setadpparms));
2639         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2640         return rc;
2641 }
2642 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2643
2644 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2645                 unsigned int qdio_error, const char *dbftext)
2646 {
2647         if (qdio_error) {
2648                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2649                 QETH_DBF_TEXT(QERR, 2, dbftext);
2650                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2651                                buf->element[15].flags & 0xff);
2652                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2653                                buf->element[14].flags & 0xff);
2654                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2655                 if ((buf->element[15].flags & 0xff) == 0x12) {
2656                         card->stats.rx_dropped++;
2657                         return 0;
2658                 } else
2659                         return 1;
2660         }
2661         return 0;
2662 }
2663 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2664
2665 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2666 {
2667         struct qeth_qdio_q *queue = card->qdio.in_q;
2668         int count;
2669         int i;
2670         int rc;
2671         int newcount = 0;
2672
2673         count = (index < queue->next_buf_to_init)?
2674                 card->qdio.in_buf_pool.buf_count -
2675                 (queue->next_buf_to_init - index) :
2676                 card->qdio.in_buf_pool.buf_count -
2677                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2678         /* only requeue at a certain threshold to avoid SIGAs */
2679         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2680                 for (i = queue->next_buf_to_init;
2681                      i < queue->next_buf_to_init + count; ++i) {
2682                         if (qeth_init_input_buffer(card,
2683                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2684                                 break;
2685                         } else {
2686                                 newcount++;
2687                         }
2688                 }
2689
2690                 if (newcount < count) {
2691                         /* we are in memory shortage so we switch back to
2692                            traditional skb allocation and drop packages */
2693                         atomic_set(&card->force_alloc_skb, 3);
2694                         count = newcount;
2695                 } else {
2696                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2697                 }
2698
2699                 /*
2700                  * according to old code it should be avoided to requeue all
2701                  * 128 buffers in order to benefit from PCI avoidance.
2702                  * this function keeps at least one buffer (the buffer at
2703                  * 'index') un-requeued -> this buffer is the first buffer that
2704                  * will be requeued the next time
2705                  */
2706                 if (card->options.performance_stats) {
2707                         card->perf_stats.inbound_do_qdio_cnt++;
2708                         card->perf_stats.inbound_do_qdio_start_time =
2709                                 qeth_get_micros();
2710                 }
2711                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2712                              queue->next_buf_to_init, count);
2713                 if (card->options.performance_stats)
2714                         card->perf_stats.inbound_do_qdio_time +=
2715                                 qeth_get_micros() -
2716                                 card->perf_stats.inbound_do_qdio_start_time;
2717                 if (rc) {
2718                         dev_warn(&card->gdev->dev,
2719                                 "QDIO reported an error, rc=%i\n", rc);
2720                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2721                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2722                 }
2723                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2724                                           QDIO_MAX_BUFFERS_PER_Q;
2725         }
2726 }
2727 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2728
2729 static int qeth_handle_send_error(struct qeth_card *card,
2730                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2731 {
2732         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2733
2734         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2735         if (card->info.type == QETH_CARD_TYPE_IQD) {
2736                 if (sbalf15 == 0) {
2737                         qdio_err = 0;
2738                 } else {
2739                         qdio_err = 1;
2740                 }
2741         }
2742         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2743
2744         if (!qdio_err)
2745                 return QETH_SEND_ERROR_NONE;
2746
2747         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2748                 return QETH_SEND_ERROR_RETRY;
2749
2750         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2751         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2752         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2753                        (u16)qdio_err, (u8)sbalf15);
2754         return QETH_SEND_ERROR_LINK_FAILURE;
2755 }
2756
2757 /*
2758  * Switched to packing state if the number of used buffers on a queue
2759  * reaches a certain limit.
2760  */
2761 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2762 {
2763         if (!queue->do_pack) {
2764                 if (atomic_read(&queue->used_buffers)
2765                     >= QETH_HIGH_WATERMARK_PACK){
2766                         /* switch non-PACKING -> PACKING */
2767                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2768                         if (queue->card->options.performance_stats)
2769                                 queue->card->perf_stats.sc_dp_p++;
2770                         queue->do_pack = 1;
2771                 }
2772         }
2773 }
2774
2775 /*
2776  * Switches from packing to non-packing mode. If there is a packing
2777  * buffer on the queue this buffer will be prepared to be flushed.
2778  * In that case 1 is returned to inform the caller. If no buffer
2779  * has to be flushed, zero is returned.
2780  */
2781 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2782 {
2783         struct qeth_qdio_out_buffer *buffer;
2784         int flush_count = 0;
2785
2786         if (queue->do_pack) {
2787                 if (atomic_read(&queue->used_buffers)
2788                     <= QETH_LOW_WATERMARK_PACK) {
2789                         /* switch PACKING -> non-PACKING */
2790                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2791                         if (queue->card->options.performance_stats)
2792                                 queue->card->perf_stats.sc_p_dp++;
2793                         queue->do_pack = 0;
2794                         /* flush packing buffers */
2795                         buffer = &queue->bufs[queue->next_buf_to_fill];
2796                         if ((atomic_read(&buffer->state) ==
2797                                                 QETH_QDIO_BUF_EMPTY) &&
2798                             (buffer->next_element_to_fill > 0)) {
2799                                 atomic_set(&buffer->state,
2800                                                 QETH_QDIO_BUF_PRIMED);
2801                                 flush_count++;
2802                                 queue->next_buf_to_fill =
2803                                         (queue->next_buf_to_fill + 1) %
2804                                         QDIO_MAX_BUFFERS_PER_Q;
2805                         }
2806                 }
2807         }
2808         return flush_count;
2809 }
2810
2811 /*
2812  * Called to flush a packing buffer if no more pci flags are on the queue.
2813  * Checks if there is a packing buffer and prepares it to be flushed.
2814  * In that case returns 1, otherwise zero.
2815  */
2816 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2817 {
2818         struct qeth_qdio_out_buffer *buffer;
2819
2820         buffer = &queue->bufs[queue->next_buf_to_fill];
2821         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2822            (buffer->next_element_to_fill > 0)) {
2823                 /* it's a packing buffer */
2824                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2825                 queue->next_buf_to_fill =
2826                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2827                 return 1;
2828         }
2829         return 0;
2830 }
2831
2832 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2833                                int count)
2834 {
2835         struct qeth_qdio_out_buffer *buf;
2836         int rc;
2837         int i;
2838         unsigned int qdio_flags;
2839
2840         for (i = index; i < index + count; ++i) {
2841                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2842                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2843                                 SBAL_FLAGS_LAST_ENTRY;
2844
2845                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2846                         continue;
2847
2848                 if (!queue->do_pack) {
2849                         if ((atomic_read(&queue->used_buffers) >=
2850                                 (QETH_HIGH_WATERMARK_PACK -
2851                                  QETH_WATERMARK_PACK_FUZZ)) &&
2852                             !atomic_read(&queue->set_pci_flags_count)) {
2853                                 /* it's likely that we'll go to packing
2854                                  * mode soon */
2855                                 atomic_inc(&queue->set_pci_flags_count);
2856                                 buf->buffer->element[0].flags |= 0x40;
2857                         }
2858                 } else {
2859                         if (!atomic_read(&queue->set_pci_flags_count)) {
2860                                 /*
2861                                  * there's no outstanding PCI any more, so we
2862                                  * have to request a PCI to be sure the the PCI
2863                                  * will wake at some time in the future then we
2864                                  * can flush packed buffers that might still be
2865                                  * hanging around, which can happen if no
2866                                  * further send was requested by the stack
2867                                  */
2868                                 atomic_inc(&queue->set_pci_flags_count);
2869                                 buf->buffer->element[0].flags |= 0x40;
2870                         }
2871                 }
2872         }
2873
2874         queue->sync_iqdio_error = 0;
2875         queue->card->dev->trans_start = jiffies;
2876         if (queue->card->options.performance_stats) {
2877                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2878                 queue->card->perf_stats.outbound_do_qdio_start_time =
2879                         qeth_get_micros();
2880         }
2881         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2882         if (atomic_read(&queue->set_pci_flags_count))
2883                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2884         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2885                      queue->queue_no, index, count);
2886         if (queue->card->options.performance_stats)
2887                 queue->card->perf_stats.outbound_do_qdio_time +=
2888                         qeth_get_micros() -
2889                         queue->card->perf_stats.outbound_do_qdio_start_time;
2890         if (rc > 0) {
2891                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2892                         queue->sync_iqdio_error = rc & 3;
2893         }
2894         if (rc) {
2895                 queue->card->stats.tx_errors += count;
2896                 /* ignore temporary SIGA errors without busy condition */
2897                 if (rc == QDIO_ERROR_SIGA_TARGET)
2898                         return;
2899                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2900                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2901                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2902
2903                 /* this must not happen under normal circumstances. if it
2904                  * happens something is really wrong -> recover */
2905                 qeth_schedule_recovery(queue->card);
2906                 return;
2907         }
2908         atomic_add(count, &queue->used_buffers);
2909         if (queue->card->options.performance_stats)
2910                 queue->card->perf_stats.bufs_sent += count;
2911 }
2912
2913 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2914 {
2915         int index;
2916         int flush_cnt = 0;
2917         int q_was_packing = 0;
2918
2919         /*
2920          * check if weed have to switch to non-packing mode or if
2921          * we have to get a pci flag out on the queue
2922          */
2923         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2924             !atomic_read(&queue->set_pci_flags_count)) {
2925                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2926                                 QETH_OUT_Q_UNLOCKED) {
2927                         /*
2928                          * If we get in here, there was no action in
2929                          * do_send_packet. So, we check if there is a
2930                          * packing buffer to be flushed here.
2931                          */
2932                         netif_stop_queue(queue->card->dev);
2933                         index = queue->next_buf_to_fill;
2934                         q_was_packing = queue->do_pack;
2935                         /* queue->do_pack may change */
2936                         barrier();
2937                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2938                         if (!flush_cnt &&
2939                             !atomic_read(&queue->set_pci_flags_count))
2940                                 flush_cnt +=
2941                                         qeth_flush_buffers_on_no_pci(queue);
2942                         if (queue->card->options.performance_stats &&
2943                             q_was_packing)
2944                                 queue->card->perf_stats.bufs_sent_pack +=
2945                                         flush_cnt;
2946                         if (flush_cnt)
2947                                 qeth_flush_buffers(queue, index, flush_cnt);
2948                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2949                 }
2950         }
2951 }
2952
2953 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2954                 unsigned int qdio_error, int __queue, int first_element,
2955                 int count, unsigned long card_ptr)
2956 {
2957         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2958         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2959         struct qeth_qdio_out_buffer *buffer;
2960         int i;
2961         unsigned qeth_send_err;
2962
2963         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2964         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2965                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2966                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2967                 netif_stop_queue(card->dev);
2968                 qeth_schedule_recovery(card);
2969                 return;
2970         }
2971         if (card->options.performance_stats) {
2972                 card->perf_stats.outbound_handler_cnt++;
2973                 card->perf_stats.outbound_handler_start_time =
2974                         qeth_get_micros();
2975         }
2976         for (i = first_element; i < (first_element + count); ++i) {
2977                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2978                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2979                 __qeth_clear_output_buffer(queue, buffer,
2980                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2981         }
2982         atomic_sub(count, &queue->used_buffers);
2983         /* check if we need to do something on this outbound queue */
2984         if (card->info.type != QETH_CARD_TYPE_IQD)
2985                 qeth_check_outbound_queue(queue);
2986
2987         netif_wake_queue(queue->card->dev);
2988         if (card->options.performance_stats)
2989                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2990                         card->perf_stats.outbound_handler_start_time;
2991 }
2992 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2993
2994 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2995                         int ipv, int cast_type)
2996 {
2997         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
2998                      card->info.type == QETH_CARD_TYPE_OSX))
2999                 return card->qdio.default_out_queue;
3000         switch (card->qdio.no_out_queues) {
3001         case 4:
3002                 if (cast_type && card->info.is_multicast_different)
3003                         return card->info.is_multicast_different &
3004                                 (card->qdio.no_out_queues - 1);
3005                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3006                         const u8 tos = ip_hdr(skb)->tos;
3007
3008                         if (card->qdio.do_prio_queueing ==
3009                                 QETH_PRIO_Q_ING_TOS) {
3010                                 if (tos & IP_TOS_NOTIMPORTANT)
3011                                         return 3;
3012                                 if (tos & IP_TOS_HIGHRELIABILITY)
3013                                         return 2;
3014                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3015                                         return 1;
3016                                 if (tos & IP_TOS_LOWDELAY)
3017                                         return 0;
3018                         }
3019                         if (card->qdio.do_prio_queueing ==
3020                                 QETH_PRIO_Q_ING_PREC)
3021                                 return 3 - (tos >> 6);
3022                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3023                         /* TODO: IPv6!!! */
3024                 }
3025                 return card->qdio.default_out_queue;
3026         case 1: /* fallthrough for single-out-queue 1920-device */
3027         default:
3028                 return card->qdio.default_out_queue;
3029         }
3030 }
3031 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3032
3033 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3034                      struct sk_buff *skb, int elems)
3035 {
3036         int elements_needed = 0;
3037
3038         if (skb_shinfo(skb)->nr_frags > 0)
3039                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3040         if (elements_needed == 0)
3041                 elements_needed = 1 + (((((unsigned long) skb->data) %
3042                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
3043         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3044                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3045                         "(Number=%d / Length=%d). Discarded.\n",
3046                         (elements_needed+elems), skb->len);
3047                 return 0;
3048         }
3049         return elements_needed;
3050 }
3051 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3052
3053 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3054         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3055         int offset)
3056 {
3057         int length = skb->len;
3058         int length_here;
3059         int element;
3060         char *data;
3061         int first_lap ;
3062
3063         element = *next_element_to_fill;
3064         data = skb->data;
3065         first_lap = (is_tso == 0 ? 1 : 0);
3066
3067         if (offset >= 0) {
3068                 data = skb->data + offset;
3069                 length -= offset;
3070                 first_lap = 0;
3071         }
3072
3073         while (length > 0) {
3074                 /* length_here is the remaining amount of data in this page */
3075                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3076                 if (length < length_here)
3077                         length_here = length;
3078
3079                 buffer->element[element].addr = data;
3080                 buffer->element[element].length = length_here;
3081                 length -= length_here;
3082                 if (!length) {
3083                         if (first_lap)
3084                                 buffer->element[element].flags = 0;
3085                         else
3086                                 buffer->element[element].flags =
3087                                     SBAL_FLAGS_LAST_FRAG;
3088                 } else {
3089                         if (first_lap)
3090                                 buffer->element[element].flags =
3091                                     SBAL_FLAGS_FIRST_FRAG;
3092                         else
3093                                 buffer->element[element].flags =
3094                                     SBAL_FLAGS_MIDDLE_FRAG;
3095                 }
3096                 data += length_here;
3097                 element++;
3098                 first_lap = 0;
3099         }
3100         *next_element_to_fill = element;
3101 }
3102
3103 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3104                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3105                 struct qeth_hdr *hdr, int offset, int hd_len)
3106 {
3107         struct qdio_buffer *buffer;
3108         int flush_cnt = 0, hdr_len, large_send = 0;
3109
3110         buffer = buf->buffer;
3111         atomic_inc(&skb->users);
3112         skb_queue_tail(&buf->skb_list, skb);
3113
3114         /*check first on TSO ....*/
3115         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3116                 int element = buf->next_element_to_fill;
3117
3118                 hdr_len = sizeof(struct qeth_hdr_tso) +
3119                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3120                 /*fill first buffer entry only with header information */
3121                 buffer->element[element].addr = skb->data;
3122                 buffer->element[element].length = hdr_len;
3123                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3124                 buf->next_element_to_fill++;
3125                 skb->data += hdr_len;
3126                 skb->len  -= hdr_len;
3127                 large_send = 1;
3128         }
3129
3130         if (offset >= 0) {
3131                 int element = buf->next_element_to_fill;
3132                 buffer->element[element].addr = hdr;
3133                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3134                                                         hd_len;
3135                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3136                 buf->is_header[element] = 1;
3137                 buf->next_element_to_fill++;
3138         }
3139
3140         if (skb_shinfo(skb)->nr_frags == 0)
3141                 __qeth_fill_buffer(skb, buffer, large_send,
3142                                 (int *)&buf->next_element_to_fill, offset);
3143         else
3144                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3145                                         (int *)&buf->next_element_to_fill);
3146
3147         if (!queue->do_pack) {
3148                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3149                 /* set state to PRIMED -> will be flushed */
3150                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3151                 flush_cnt = 1;
3152         } else {
3153                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3154                 if (queue->card->options.performance_stats)
3155                         queue->card->perf_stats.skbs_sent_pack++;
3156                 if (buf->next_element_to_fill >=
3157                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3158                         /*
3159                          * packed buffer if full -> set state PRIMED
3160                          * -> will be flushed
3161                          */
3162                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3163                         flush_cnt = 1;
3164                 }
3165         }
3166         return flush_cnt;
3167 }
3168
3169 int qeth_do_send_packet_fast(struct qeth_card *card,
3170                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3171                 struct qeth_hdr *hdr, int elements_needed,
3172                 int offset, int hd_len)
3173 {
3174         struct qeth_qdio_out_buffer *buffer;
3175         struct sk_buff *skb1;
3176         struct qeth_skb_data *retry_ctrl;
3177         int index;
3178         int rc;
3179
3180         /* spin until we get the queue ... */
3181         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3182                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3183         /* ... now we've got the queue */
3184         index = queue->next_buf_to_fill;
3185         buffer = &queue->bufs[queue->next_buf_to_fill];
3186         /*
3187          * check if buffer is empty to make sure that we do not 'overtake'
3188          * ourselves and try to fill a buffer that is already primed
3189          */
3190         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3191                 goto out;
3192         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3193                                           QDIO_MAX_BUFFERS_PER_Q;
3194         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3195         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3196         qeth_flush_buffers(queue, index, 1);
3197         if (queue->sync_iqdio_error == 2) {
3198                 skb1 = skb_dequeue(&buffer->skb_list);
3199                 while (skb1) {
3200                         atomic_dec(&skb1->users);
3201                         skb1 = skb_dequeue(&buffer->skb_list);
3202                 }
3203                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3204                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3205                         retry_ctrl->magic = QETH_SKB_MAGIC;
3206                         retry_ctrl->count = 0;
3207                 }
3208                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3209                         retry_ctrl->count++;
3210                         rc = dev_queue_xmit(skb);
3211                 } else {
3212                         dev_kfree_skb_any(skb);
3213                         QETH_DBF_TEXT(QERR, 2, "qrdrop");
3214                 }
3215         }
3216         return 0;
3217 out:
3218         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3219         return -EBUSY;
3220 }
3221 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3222
3223 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3224                 struct sk_buff *skb, struct qeth_hdr *hdr,
3225                 int elements_needed)
3226 {
3227         struct qeth_qdio_out_buffer *buffer;
3228         int start_index;
3229         int flush_count = 0;
3230         int do_pack = 0;
3231         int tmp;
3232         int rc = 0;
3233
3234         /* spin until we get the queue ... */
3235         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3236                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3237         start_index = queue->next_buf_to_fill;
3238         buffer = &queue->bufs[queue->next_buf_to_fill];
3239         /*
3240          * check if buffer is empty to make sure that we do not 'overtake'
3241          * ourselves and try to fill a buffer that is already primed
3242          */
3243         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3244                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3245                 return -EBUSY;
3246         }
3247         /* check if we need to switch packing state of this queue */
3248         qeth_switch_to_packing_if_needed(queue);
3249         if (queue->do_pack) {
3250                 do_pack = 1;
3251                 /* does packet fit in current buffer? */
3252                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3253                     buffer->next_element_to_fill) < elements_needed) {
3254                         /* ... no -> set state PRIMED */
3255                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3256                         flush_count++;
3257                         queue->next_buf_to_fill =
3258                                 (queue->next_buf_to_fill + 1) %
3259                                 QDIO_MAX_BUFFERS_PER_Q;
3260                         buffer = &queue->bufs[queue->next_buf_to_fill];
3261                         /* we did a step forward, so check buffer state
3262                          * again */
3263                         if (atomic_read(&buffer->state) !=
3264                             QETH_QDIO_BUF_EMPTY) {
3265                                 qeth_flush_buffers(queue, start_index,
3266                                                            flush_count);
3267                                 atomic_set(&queue->state,
3268                                                 QETH_OUT_Q_UNLOCKED);
3269                                 return -EBUSY;
3270                         }
3271                 }
3272         }
3273         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3274         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3275                                   QDIO_MAX_BUFFERS_PER_Q;
3276         flush_count += tmp;
3277         if (flush_count)
3278                 qeth_flush_buffers(queue, start_index, flush_count);
3279         else if (!atomic_read(&queue->set_pci_flags_count))
3280                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3281         /*
3282          * queue->state will go from LOCKED -> UNLOCKED or from
3283          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3284          * (switch packing state or flush buffer to get another pci flag out).
3285          * In that case we will enter this loop
3286          */
3287         while (atomic_dec_return(&queue->state)) {
3288                 flush_count = 0;
3289                 start_index = queue->next_buf_to_fill;
3290                 /* check if we can go back to non-packing state */
3291                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3292                 /*
3293                  * check if we need to flush a packing buffer to get a pci
3294                  * flag out on the queue
3295                  */
3296                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3297                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3298                 if (flush_count)
3299                         qeth_flush_buffers(queue, start_index, flush_count);
3300         }
3301         /* at this point the queue is UNLOCKED again */
3302         if (queue->card->options.performance_stats && do_pack)
3303                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3304
3305         return rc;
3306 }
3307 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3308
3309 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3310                 struct qeth_reply *reply, unsigned long data)
3311 {
3312         struct qeth_ipa_cmd *cmd;
3313         struct qeth_ipacmd_setadpparms *setparms;
3314
3315         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3316
3317         cmd = (struct qeth_ipa_cmd *) data;
3318         setparms = &(cmd->data.setadapterparms);
3319
3320         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3321         if (cmd->hdr.return_code) {
3322                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3323                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3324         }
3325         card->info.promisc_mode = setparms->data.mode;
3326         return 0;
3327 }
3328
3329 void qeth_setadp_promisc_mode(struct qeth_card *card)
3330 {
3331         enum qeth_ipa_promisc_modes mode;
3332         struct net_device *dev = card->dev;
3333         struct qeth_cmd_buffer *iob;
3334         struct qeth_ipa_cmd *cmd;
3335
3336         QETH_DBF_TEXT(TRACE, 4, "setprom");
3337
3338         if (((dev->flags & IFF_PROMISC) &&
3339              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3340             (!(dev->flags & IFF_PROMISC) &&
3341              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3342                 return;
3343         mode = SET_PROMISC_MODE_OFF;
3344         if (dev->flags & IFF_PROMISC)
3345                 mode = SET_PROMISC_MODE_ON;
3346         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3347
3348         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3349                         sizeof(struct qeth_ipacmd_setadpparms));
3350         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3351         cmd->data.setadapterparms.data.mode = mode;
3352         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3353 }
3354 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3355
3356 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3357 {
3358         struct qeth_card *card;
3359         char dbf_text[15];
3360
3361         card = dev->ml_priv;
3362
3363         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3364         sprintf(dbf_text, "%8x", new_mtu);
3365         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3366
3367         if (new_mtu < 64)
3368                 return -EINVAL;
3369         if (new_mtu > 65535)
3370                 return -EINVAL;
3371         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3372             (!qeth_mtu_is_valid(card, new_mtu)))
3373                 return -EINVAL;
3374         dev->mtu = new_mtu;
3375         return 0;
3376 }
3377 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3378
3379 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3380 {
3381         struct qeth_card *card;
3382
3383         card = dev->ml_priv;
3384
3385         QETH_DBF_TEXT(TRACE, 5, "getstat");
3386
3387         return &card->stats;
3388 }
3389 EXPORT_SYMBOL_GPL(qeth_get_stats);
3390
3391 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3392                 struct qeth_reply *reply, unsigned long data)
3393 {
3394         struct qeth_ipa_cmd *cmd;
3395
3396         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3397
3398         cmd = (struct qeth_ipa_cmd *) data;
3399         if (!card->options.layer2 ||
3400             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3401                 memcpy(card->dev->dev_addr,
3402                        &cmd->data.setadapterparms.data.change_addr.addr,
3403                        OSA_ADDR_LEN);
3404                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3405         }
3406         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3407         return 0;
3408 }
3409
3410 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3411 {
3412         int rc;
3413         struct qeth_cmd_buffer *iob;
3414         struct qeth_ipa_cmd *cmd;
3415
3416         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3417
3418         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3419                                    sizeof(struct qeth_ipacmd_setadpparms));
3420         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3421         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3422         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3423         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3424                card->dev->dev_addr, OSA_ADDR_LEN);
3425         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3426                                NULL);
3427         return rc;
3428 }
3429 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3430
3431 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3432                 struct qeth_reply *reply, unsigned long data)
3433 {
3434         struct qeth_ipa_cmd *cmd;
3435         struct qeth_set_access_ctrl *access_ctrl_req;
3436         int rc;
3437
3438         QETH_DBF_TEXT(TRACE, 4, "setaccb");
3439
3440         cmd = (struct qeth_ipa_cmd *) data;
3441         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3442         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3443         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3444         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3445                 cmd->data.setadapterparms.hdr.return_code);
3446         switch (cmd->data.setadapterparms.hdr.return_code) {
3447         case SET_ACCESS_CTRL_RC_SUCCESS:
3448         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3449         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3450         {
3451                 card->options.isolation = access_ctrl_req->subcmd_code;
3452                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3453                         dev_info(&card->gdev->dev,
3454                             "QDIO data connection isolation is deactivated\n");
3455                 } else {
3456                         dev_info(&card->gdev->dev,
3457                             "QDIO data connection isolation is activated\n");
3458                 }
3459                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3460                         card->gdev->dev.kobj.name,
3461                         access_ctrl_req->subcmd_code,
3462                         cmd->data.setadapterparms.hdr.return_code);
3463                 rc = 0;
3464                 break;
3465         }
3466         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3467         {
3468                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3469                         card->gdev->dev.kobj.name,
3470                         access_ctrl_req->subcmd_code,
3471                         cmd->data.setadapterparms.hdr.return_code);
3472                 dev_err(&card->gdev->dev, "Adapter does not "
3473                         "support QDIO data connection isolation\n");
3474
3475                 /* ensure isolation mode is "none" */
3476                 card->options.isolation = ISOLATION_MODE_NONE;
3477                 rc = -EOPNOTSUPP;
3478                 break;
3479         }
3480         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3481         {
3482                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3483                         card->gdev->dev.kobj.name,
3484                         access_ctrl_req->subcmd_code,
3485                         cmd->data.setadapterparms.hdr.return_code);
3486                 dev_err(&card->gdev->dev,
3487                         "Adapter is dedicated. "
3488                         "QDIO data connection isolation not supported\n");
3489
3490                 /* ensure isolation mode is "none" */
3491                 card->options.isolation = ISOLATION_MODE_NONE;
3492                 rc = -EOPNOTSUPP;
3493                 break;
3494         }
3495         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3496         {
3497                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3498                         card->gdev->dev.kobj.name,
3499                         access_ctrl_req->subcmd_code,
3500                         cmd->data.setadapterparms.hdr.return_code);
3501                 dev_err(&card->gdev->dev,
3502                         "TSO does not permit QDIO data connection isolation\n");
3503
3504                 /* ensure isolation mode is "none" */
3505                 card->options.isolation = ISOLATION_MODE_NONE;
3506                 rc = -EPERM;
3507                 break;
3508         }
3509         default:
3510         {
3511                 /* this should never happen */
3512                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3513                         "==UNKNOWN\n",
3514                         card->gdev->dev.kobj.name,
3515                         access_ctrl_req->subcmd_code,
3516                         cmd->data.setadapterparms.hdr.return_code);
3517
3518                 /* ensure isolation mode is "none" */
3519                 card->options.isolation = ISOLATION_MODE_NONE;
3520                 rc = 0;
3521                 break;
3522         }
3523         }
3524         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3525         return rc;
3526 }
3527
3528 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3529                 enum qeth_ipa_isolation_modes isolation)
3530 {
3531         int rc;
3532         struct qeth_cmd_buffer *iob;
3533         struct qeth_ipa_cmd *cmd;
3534         struct qeth_set_access_ctrl *access_ctrl_req;
3535
3536         QETH_DBF_TEXT(TRACE, 4, "setacctl");
3537
3538         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3539         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3540
3541         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3542                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3543                                    sizeof(struct qeth_set_access_ctrl));
3544         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3545         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3546         access_ctrl_req->subcmd_code = isolation;
3547
3548         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3549                                NULL);
3550         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3551         return rc;
3552 }
3553
3554 int qeth_set_access_ctrl_online(struct qeth_card *card)
3555 {
3556         int rc = 0;
3557
3558         QETH_DBF_TEXT(TRACE, 4, "setactlo");
3559
3560         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3561              card->info.type == QETH_CARD_TYPE_OSX) &&
3562              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3563                 rc = qeth_setadpparms_set_access_ctrl(card,
3564                         card->options.isolation);
3565                 if (rc) {
3566                         QETH_DBF_MESSAGE(3,
3567                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3568                                 card->gdev->dev.kobj.name,
3569                                 rc);
3570                 }
3571         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3572                 card->options.isolation = ISOLATION_MODE_NONE;
3573
3574                 dev_err(&card->gdev->dev, "Adapter does not "
3575                         "support QDIO data connection isolation\n");
3576                 rc = -EOPNOTSUPP;
3577         }
3578         return rc;
3579 }
3580 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3581
3582 void qeth_tx_timeout(struct net_device *dev)
3583 {
3584         struct qeth_card *card;
3585
3586         QETH_DBF_TEXT(TRACE, 4, "txtimeo");
3587         card = dev->ml_priv;
3588         card->stats.tx_errors++;
3589         qeth_schedule_recovery(card);
3590 }
3591 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3592
3593 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3594 {
3595         struct qeth_card *card = dev->ml_priv;
3596         int rc = 0;
3597
3598         switch (regnum) {
3599         case MII_BMCR: /* Basic mode control register */
3600                 rc = BMCR_FULLDPLX;
3601                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3602                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3603                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3604                         rc |= BMCR_SPEED100;
3605                 break;
3606         case MII_BMSR: /* Basic mode status register */
3607                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3608                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3609                      BMSR_100BASE4;
3610                 break;
3611         case MII_PHYSID1: /* PHYS ID 1 */
3612                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3613                      dev->dev_addr[2];
3614                 rc = (rc >> 5) & 0xFFFF;
3615                 break;
3616         case MII_PHYSID2: /* PHYS ID 2 */
3617                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3618                 break;
3619         case MII_ADVERTISE: /* Advertisement control reg */
3620                 rc = ADVERTISE_ALL;
3621                 break;
3622         case MII_LPA: /* Link partner ability reg */
3623                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3624                      LPA_100BASE4 | LPA_LPACK;
3625                 break;
3626         case MII_EXPANSION: /* Expansion register */
3627                 break;
3628         case MII_DCOUNTER: /* disconnect counter */
3629                 break;
3630         case MII_FCSCOUNTER: /* false carrier counter */
3631                 break;
3632         case MII_NWAYTEST: /* N-way auto-neg test register */
3633                 break;
3634         case MII_RERRCOUNTER: /* rx error counter */
3635                 rc = card->stats.rx_errors;
3636                 break;
3637         case MII_SREVISION: /* silicon revision */
3638                 break;
3639         case MII_RESV1: /* reserved 1 */
3640                 break;
3641         case MII_LBRERROR: /* loopback, rx, bypass error */
3642                 break;
3643         case MII_PHYADDR: /* physical address */
3644                 break;
3645         case MII_RESV2: /* reserved 2 */
3646                 break;
3647         case MII_TPISTATUS: /* TPI status for 10mbps */
3648                 break;
3649         case MII_NCONFIG: /* network interface config */
3650                 break;
3651         default:
3652                 break;
3653         }
3654         return rc;
3655 }
3656 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3657
3658 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3659                 struct qeth_cmd_buffer *iob, int len,
3660                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3661                         unsigned long),
3662                 void *reply_param)
3663 {
3664         u16 s1, s2;
3665
3666         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3667
3668         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3669         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3670                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3671         /* adjust PDU length fields in IPA_PDU_HEADER */
3672         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3673         s2 = (u32) len;
3674         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3675         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3676         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3677         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3678         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3679                                       reply_cb, reply_param);
3680 }
3681
3682 static int qeth_snmp_command_cb(struct qeth_card *card,
3683                 struct qeth_reply *reply, unsigned long sdata)
3684 {
3685         struct qeth_ipa_cmd *cmd;
3686         struct qeth_arp_query_info *qinfo;
3687         struct qeth_snmp_cmd *snmp;
3688         unsigned char *data;
3689         __u16 data_len;
3690
3691         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3692
3693         cmd = (struct qeth_ipa_cmd *) sdata;
3694         data = (unsigned char *)((char *)cmd - reply->offset);
3695         qinfo = (struct qeth_arp_query_info *) reply->param;
3696         snmp = &cmd->data.setadapterparms.data.snmp;
3697
3698         if (cmd->hdr.return_code) {
3699                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3700                 return 0;
3701         }
3702         if (cmd->data.setadapterparms.hdr.return_code) {
3703                 cmd->hdr.return_code =
3704                         cmd->data.setadapterparms.hdr.return_code;
3705                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3706                 return 0;
3707         }
3708         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3709         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3710                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3711         else
3712                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3713
3714         /* check if there is enough room in userspace */
3715         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3716                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3717                 cmd->hdr.return_code = -ENOMEM;
3718                 return 0;
3719         }
3720         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3721                        cmd->data.setadapterparms.hdr.used_total);
3722         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3723                 cmd->data.setadapterparms.hdr.seq_no);
3724         /*copy entries to user buffer*/
3725         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3726                 memcpy(qinfo->udata + qinfo->udata_offset,
3727                        (char *)snmp,
3728                        data_len + offsetof(struct qeth_snmp_cmd, data));
3729                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3730         } else {
3731                 memcpy(qinfo->udata + qinfo->udata_offset,
3732                        (char *)&snmp->request, data_len);
3733         }
3734         qinfo->udata_offset += data_len;
3735         /* check if all replies received ... */
3736                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3737                                cmd->data.setadapterparms.hdr.used_total);
3738                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3739                                cmd->data.setadapterparms.hdr.seq_no);
3740         if (cmd->data.setadapterparms.hdr.seq_no <
3741             cmd->data.setadapterparms.hdr.used_total)
3742                 return 1;
3743         return 0;
3744 }
3745
3746 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3747 {
3748         struct qeth_cmd_buffer *iob;
3749         struct qeth_ipa_cmd *cmd;
3750         struct qeth_snmp_ureq *ureq;
3751         int req_len;
3752         struct qeth_arp_query_info qinfo = {0, };
3753         int rc = 0;
3754
3755         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3756
3757         if (card->info.guestlan)
3758                 return -EOPNOTSUPP;
3759
3760         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3761             (!card->options.layer2)) {
3762                 return -EOPNOTSUPP;
3763         }
3764         /* skip 4 bytes (data_len struct member) to get req_len */
3765         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3766                 return -EFAULT;
3767         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3768         if (!ureq) {
3769                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3770                 return -ENOMEM;
3771         }
3772         if (copy_from_user(ureq, udata,
3773                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3774                 kfree(ureq);
3775                 return -EFAULT;
3776         }
3777         qinfo.udata_len = ureq->hdr.data_len;
3778         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3779         if (!qinfo.udata) {
3780                 kfree(ureq);
3781                 return -ENOMEM;
3782         }
3783         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3784
3785         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3786                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3787         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3788         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3789         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3790                                     qeth_snmp_command_cb, (void *)&qinfo);
3791         if (rc)
3792                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3793                            QETH_CARD_IFNAME(card), rc);
3794         else {
3795                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3796                         rc = -EFAULT;
3797         }
3798
3799         kfree(ureq);
3800         kfree(qinfo.udata);
3801         return rc;
3802 }
3803 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3804
3805 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3806 {
3807         switch (card->info.type) {
3808         case QETH_CARD_TYPE_IQD:
3809                 return 2;
3810         default:
3811                 return 0;
3812         }
3813 }
3814
3815 static int qeth_qdio_establish(struct qeth_card *card)
3816 {
3817         struct qdio_initialize init_data;
3818         char *qib_param_field;
3819         struct qdio_buffer **in_sbal_ptrs;
3820         struct qdio_buffer **out_sbal_ptrs;
3821         int i, j, k;
3822         int rc = 0;
3823
3824         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3825
3826         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3827                               GFP_KERNEL);
3828         if (!qib_param_field)
3829                 return -ENOMEM;
3830
3831         qeth_create_qib_param_field(card, qib_param_field);
3832         qeth_create_qib_param_field_blkt(card, qib_param_field);
3833
3834         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3835                                GFP_KERNEL);
3836         if (!in_sbal_ptrs) {
3837                 kfree(qib_param_field);
3838                 return -ENOMEM;
3839         }
3840         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3841                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3842                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3843
3844         out_sbal_ptrs =
3845                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3846                         sizeof(void *), GFP_KERNEL);
3847         if (!out_sbal_ptrs) {
3848                 kfree(in_sbal_ptrs);
3849                 kfree(qib_param_field);
3850                 return -ENOMEM;
3851         }
3852         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3853                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3854                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3855                                 card->qdio.out_qs[i]->bufs[j].buffer);
3856                 }
3857
3858         memset(&init_data, 0, sizeof(struct qdio_initialize));
3859         init_data.cdev                   = CARD_DDEV(card);
3860         init_data.q_format               = qeth_get_qdio_q_format(card);
3861         init_data.qib_param_field_format = 0;
3862         init_data.qib_param_field        = qib_param_field;
3863         init_data.no_input_qs            = 1;
3864         init_data.no_output_qs           = card->qdio.no_out_queues;
3865         init_data.input_handler          = card->discipline.input_handler;
3866         init_data.output_handler         = card->discipline.output_handler;
3867         init_data.int_parm               = (unsigned long) card;
3868         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3869         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3870
3871         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3872                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3873                 rc = qdio_allocate(&init_data);
3874                 if (rc) {
3875                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3876                         goto out;
3877                 }
3878                 rc = qdio_establish(&init_data);
3879                 if (rc) {
3880                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3881                         qdio_free(CARD_DDEV(card));
3882                 }
3883         }
3884 out:
3885         kfree(out_sbal_ptrs);
3886         kfree(in_sbal_ptrs);
3887         kfree(qib_param_field);
3888         return rc;
3889 }
3890
3891 static void qeth_core_free_card(struct qeth_card *card)
3892 {
3893
3894         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3895         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3896         qeth_clean_channel(&card->read);
3897         qeth_clean_channel(&card->write);
3898         if (card->dev)
3899                 free_netdev(card->dev);
3900         kfree(card->ip_tbd_list);
3901         qeth_free_qdio_buffers(card);
3902         unregister_service_level(&card->qeth_service_level);
3903         kfree(card);
3904 }
3905
3906 static struct ccw_device_id qeth_ids[] = {
3907         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
3908                                         .driver_info = QETH_CARD_TYPE_OSD},
3909         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
3910                                         .driver_info = QETH_CARD_TYPE_IQD},
3911         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
3912                                         .driver_info = QETH_CARD_TYPE_OSN},
3913         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
3914                                         .driver_info = QETH_CARD_TYPE_OSM},
3915         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
3916                                         .driver_info = QETH_CARD_TYPE_OSX},
3917         {},
3918 };
3919 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3920
3921 static struct ccw_driver qeth_ccw_driver = {
3922         .name = "qeth",
3923         .ids = qeth_ids,
3924         .probe = ccwgroup_probe_ccwdev,
3925         .remove = ccwgroup_remove_ccwdev,
3926 };
3927
3928 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3929                                 unsigned long driver_id)
3930 {
3931         return ccwgroup_create_from_string(root_dev, driver_id,
3932                                            &qeth_ccw_driver, 3, buf);
3933 }
3934
3935 int qeth_core_hardsetup_card(struct qeth_card *card)
3936 {
3937         int retries = 0;
3938         int rc;
3939
3940         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3941         atomic_set(&card->force_alloc_skb, 0);
3942 retry:
3943         if (retries)
3944                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3945                         dev_name(&card->gdev->dev));
3946         ccw_device_set_offline(CARD_DDEV(card));
3947         ccw_device_set_offline(CARD_WDEV(card));
3948         ccw_device_set_offline(CARD_RDEV(card));
3949         rc = ccw_device_set_online(CARD_RDEV(card));
3950         if (rc)
3951                 goto retriable;
3952         rc = ccw_device_set_online(CARD_WDEV(card));
3953         if (rc)
3954                 goto retriable;
3955         rc = ccw_device_set_online(CARD_DDEV(card));
3956         if (rc)
3957                 goto retriable;
3958         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3959 retriable:
3960         if (rc == -ERESTARTSYS) {
3961                 QETH_DBF_TEXT(SETUP, 2, "break1");
3962                 return rc;
3963         } else if (rc) {
3964                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3965                 if (++retries > 3)
3966                         goto out;
3967                 else
3968                         goto retry;
3969         }
3970         qeth_init_tokens(card);
3971         qeth_init_func_level(card);
3972         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3973         if (rc == -ERESTARTSYS) {
3974                 QETH_DBF_TEXT(SETUP, 2, "break2");
3975                 return rc;
3976         } else if (rc) {
3977                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3978                 if (--retries < 0)
3979                         goto out;
3980                 else
3981                         goto retry;
3982         }
3983         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3984         if (rc == -ERESTARTSYS) {
3985                 QETH_DBF_TEXT(SETUP, 2, "break3");
3986                 return rc;
3987         } else if (rc) {
3988                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3989                 if (--retries < 0)
3990                         goto out;
3991                 else
3992                         goto retry;
3993         }
3994         rc = qeth_mpc_initialize(card);
3995         if (rc) {
3996                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3997                 goto out;
3998         }
3999         return 0;
4000 out:
4001         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4002                 "an error on the device\n");
4003         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4004                 dev_name(&card->gdev->dev), rc);
4005         return rc;
4006 }
4007 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4008
4009 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4010                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4011 {
4012         struct page *page = virt_to_page(element->addr);
4013         if (*pskb == NULL) {
4014                 /* the upper protocol layers assume that there is data in the
4015                  * skb itself. Copy a small amount (64 bytes) to make them
4016                  * happy. */
4017                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4018                 if (!(*pskb))
4019                         return -ENOMEM;
4020                 skb_reserve(*pskb, ETH_HLEN);
4021                 if (data_len <= 64) {
4022                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4023                                 data_len);
4024                 } else {
4025                         get_page(page);
4026                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4027                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4028                                 data_len - 64);
4029                         (*pskb)->data_len += data_len - 64;
4030                         (*pskb)->len      += data_len - 64;
4031                         (*pskb)->truesize += data_len - 64;
4032                         (*pfrag)++;
4033                 }
4034         } else {
4035                 get_page(page);
4036                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4037                 (*pskb)->data_len += data_len;
4038                 (*pskb)->len      += data_len;
4039                 (*pskb)->truesize += data_len;
4040                 (*pfrag)++;
4041         }
4042         return 0;
4043 }
4044
4045 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4046                 struct qdio_buffer *buffer,
4047                 struct qdio_buffer_element **__element, int *__offset,
4048                 struct qeth_hdr **hdr)
4049 {
4050         struct qdio_buffer_element *element = *__element;
4051         int offset = *__offset;
4052         struct sk_buff *skb = NULL;
4053         int skb_len = 0;
4054         void *data_ptr;
4055         int data_len;
4056         int headroom = 0;
4057         int use_rx_sg = 0;
4058         int frag = 0;
4059
4060         /* qeth_hdr must not cross element boundaries */
4061         if (element->length < offset + sizeof(struct qeth_hdr)) {
4062                 if (qeth_is_last_sbale(element))
4063                         return NULL;
4064                 element++;
4065                 offset = 0;
4066                 if (element->length < sizeof(struct qeth_hdr))
4067                         return NULL;
4068         }
4069         *hdr = element->addr + offset;
4070
4071         offset += sizeof(struct qeth_hdr);
4072         switch ((*hdr)->hdr.l2.id) {
4073         case QETH_HEADER_TYPE_LAYER2:
4074                 skb_len = (*hdr)->hdr.l2.pkt_length;
4075                 break;
4076         case QETH_HEADER_TYPE_LAYER3:
4077                 skb_len = (*hdr)->hdr.l3.length;
4078                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4079                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4080                         headroom = TR_HLEN;
4081                 else
4082                         headroom = ETH_HLEN;
4083                 break;
4084         case QETH_HEADER_TYPE_OSN:
4085                 skb_len = (*hdr)->hdr.osn.pdu_length;
4086                 headroom = sizeof(struct qeth_hdr);
4087                 break;
4088         default:
4089                 break;
4090         }
4091
4092         if (!skb_len)
4093                 return NULL;
4094
4095         if ((skb_len >= card->options.rx_sg_cb) &&
4096             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4097             (!atomic_read(&card->force_alloc_skb))) {
4098                 use_rx_sg = 1;
4099         } else {
4100                 skb = dev_alloc_skb(skb_len + headroom);
4101                 if (!skb)
4102                         goto no_mem;
4103                 if (headroom)
4104                         skb_reserve(skb, headroom);
4105         }
4106
4107         data_ptr = element->addr + offset;
4108         while (skb_len) {
4109                 data_len = min(skb_len, (int)(element->length - offset));
4110                 if (data_len) {
4111                         if (use_rx_sg) {
4112                                 if (qeth_create_skb_frag(element, &skb, offset,
4113                                     &frag, data_len))
4114                                         goto no_mem;
4115                         } else {
4116                                 memcpy(skb_put(skb, data_len), data_ptr,
4117                                         data_len);
4118                         }
4119                 }
4120                 skb_len -= data_len;
4121                 if (skb_len) {
4122                         if (qeth_is_last_sbale(element)) {
4123                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4124                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4125                                         CARD_BUS_ID(card));
4126                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4127                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4128                                         CARD_BUS_ID(card));
4129                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4130                                 dev_kfree_skb_any(skb);
4131                                 card->stats.rx_errors++;
4132                                 return NULL;
4133                         }
4134                         element++;
4135                         offset = 0;
4136                         data_ptr = element->addr;
4137                 } else {
4138                         offset += data_len;
4139                 }
4140         }
4141         *__element = element;
4142         *__offset = offset;
4143         if (use_rx_sg && card->options.performance_stats) {
4144                 card->perf_stats.sg_skbs_rx++;
4145                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4146         }
4147         return skb;
4148 no_mem:
4149         if (net_ratelimit()) {
4150                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4151                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4152         }
4153         card->stats.rx_dropped++;
4154         return NULL;
4155 }
4156 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4157
4158 static void qeth_unregister_dbf_views(void)
4159 {
4160         int x;
4161         for (x = 0; x < QETH_DBF_INFOS; x++) {
4162                 debug_unregister(qeth_dbf[x].id);
4163                 qeth_dbf[x].id = NULL;
4164         }
4165 }
4166
4167 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4168 {
4169         char dbf_txt_buf[32];
4170         va_list args;
4171
4172         if (level > (qeth_dbf[dbf_nix].id)->level)
4173                 return;
4174         va_start(args, fmt);
4175         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4176         va_end(args);
4177         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4178 }
4179 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4180
4181 static int qeth_register_dbf_views(void)
4182 {
4183         int ret;
4184         int x;
4185
4186         for (x = 0; x < QETH_DBF_INFOS; x++) {
4187                 /* register the areas */
4188                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4189                                                 qeth_dbf[x].pages,
4190                                                 qeth_dbf[x].areas,
4191                                                 qeth_dbf[x].len);
4192                 if (qeth_dbf[x].id == NULL) {
4193                         qeth_unregister_dbf_views();
4194                         return -ENOMEM;
4195                 }
4196
4197                 /* register a view */
4198                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4199                 if (ret) {
4200                         qeth_unregister_dbf_views();
4201                         return ret;
4202                 }
4203
4204                 /* set a passing level */
4205                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4206         }
4207
4208         return 0;
4209 }
4210
4211 int qeth_core_load_discipline(struct qeth_card *card,
4212                 enum qeth_discipline_id discipline)
4213 {
4214         int rc = 0;
4215         switch (discipline) {
4216         case QETH_DISCIPLINE_LAYER3:
4217                 card->discipline.ccwgdriver = try_then_request_module(
4218                         symbol_get(qeth_l3_ccwgroup_driver),
4219                         "qeth_l3");
4220                 break;
4221         case QETH_DISCIPLINE_LAYER2:
4222                 card->discipline.ccwgdriver = try_then_request_module(
4223                         symbol_get(qeth_l2_ccwgroup_driver),
4224                         "qeth_l2");
4225                 break;
4226         }
4227         if (!card->discipline.ccwgdriver) {
4228                 dev_err(&card->gdev->dev, "There is no kernel module to "
4229                         "support discipline %d\n", discipline);
4230                 rc = -EINVAL;
4231         }
4232         return rc;
4233 }
4234
4235 void qeth_core_free_discipline(struct qeth_card *card)
4236 {
4237         if (card->options.layer2)
4238                 symbol_put(qeth_l2_ccwgroup_driver);
4239         else
4240                 symbol_put(qeth_l3_ccwgroup_driver);
4241         card->discipline.ccwgdriver = NULL;
4242 }
4243
4244 static void qeth_determine_capabilities(struct qeth_card *card)
4245 {
4246         int rc;
4247         int length;
4248         char *prcd;
4249
4250         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4251         rc = ccw_device_set_online(CARD_DDEV(card));
4252         if (rc) {
4253                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4254                 goto out;
4255         }
4256
4257
4258         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4259         if (rc) {
4260                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4261                         dev_name(&card->gdev->dev), rc);
4262                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4263                 goto out_offline;
4264         }
4265         qeth_configure_unitaddr(card, prcd);
4266         qeth_configure_blkt_default(card, prcd);
4267         kfree(prcd);
4268
4269         rc = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
4270         if (rc)
4271                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4272
4273 out_offline:
4274         ccw_device_set_offline(CARD_DDEV(card));
4275 out:
4276         return;
4277 }
4278
4279 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4280 {
4281         struct qeth_card *card;
4282         struct device *dev;
4283         int rc;
4284         unsigned long flags;
4285
4286         QETH_DBF_TEXT(SETUP, 2, "probedev");
4287
4288         dev = &gdev->dev;
4289         if (!get_device(dev))
4290                 return -ENODEV;
4291
4292         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4293
4294         card = qeth_alloc_card();
4295         if (!card) {
4296                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4297                 rc = -ENOMEM;
4298                 goto err_dev;
4299         }
4300         card->read.ccwdev  = gdev->cdev[0];
4301         card->write.ccwdev = gdev->cdev[1];
4302         card->data.ccwdev  = gdev->cdev[2];
4303         dev_set_drvdata(&gdev->dev, card);
4304         card->gdev = gdev;
4305         gdev->cdev[0]->handler = qeth_irq;
4306         gdev->cdev[1]->handler = qeth_irq;
4307         gdev->cdev[2]->handler = qeth_irq;
4308
4309         rc = qeth_determine_card_type(card);
4310         if (rc) {
4311                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4312                 goto err_card;
4313         }
4314         rc = qeth_setup_card(card);
4315         if (rc) {
4316                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4317                 goto err_card;
4318         }
4319
4320         if (card->info.type == QETH_CARD_TYPE_OSN)
4321                 rc = qeth_core_create_osn_attributes(dev);
4322         else
4323                 rc = qeth_core_create_device_attributes(dev);
4324         if (rc)
4325                 goto err_card;
4326         switch (card->info.type) {
4327         case QETH_CARD_TYPE_OSN:
4328         case QETH_CARD_TYPE_OSM:
4329                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4330                 if (rc)
4331                         goto err_attr;
4332                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4333                 if (rc)
4334                         goto err_disc;
4335         case QETH_CARD_TYPE_OSD:
4336         case QETH_CARD_TYPE_OSX:
4337         default:
4338                 break;
4339         }
4340
4341         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4342         list_add_tail(&card->list, &qeth_core_card_list.list);
4343         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4344
4345         qeth_determine_capabilities(card);
4346         return 0;
4347
4348 err_disc:
4349         qeth_core_free_discipline(card);
4350 err_attr:
4351         if (card->info.type == QETH_CARD_TYPE_OSN)
4352                 qeth_core_remove_osn_attributes(dev);
4353         else
4354                 qeth_core_remove_device_attributes(dev);
4355 err_card:
4356         qeth_core_free_card(card);
4357 err_dev:
4358         put_device(dev);
4359         return rc;
4360 }
4361
4362 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4363 {
4364         unsigned long flags;
4365         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4366
4367         QETH_DBF_TEXT(SETUP, 2, "removedv");
4368         if (card->discipline.ccwgdriver) {
4369                 card->discipline.ccwgdriver->remove(gdev);
4370                 qeth_core_free_discipline(card);
4371         }
4372
4373         if (card->info.type == QETH_CARD_TYPE_OSN) {
4374                 qeth_core_remove_osn_attributes(&gdev->dev);
4375         } else {
4376                 qeth_core_remove_device_attributes(&gdev->dev);
4377         }
4378         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4379         list_del(&card->list);
4380         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4381         qeth_core_free_card(card);
4382         dev_set_drvdata(&gdev->dev, NULL);
4383         put_device(&gdev->dev);
4384         return;
4385 }
4386
4387 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4388 {
4389         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4390         int rc = 0;
4391         int def_discipline;
4392
4393         if (!card->discipline.ccwgdriver) {
4394                 if (card->info.type == QETH_CARD_TYPE_IQD)
4395                         def_discipline = QETH_DISCIPLINE_LAYER3;
4396                 else
4397                         def_discipline = QETH_DISCIPLINE_LAYER2;
4398                 rc = qeth_core_load_discipline(card, def_discipline);
4399                 if (rc)
4400                         goto err;
4401                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4402                 if (rc)
4403                         goto err;
4404         }
4405         rc = card->discipline.ccwgdriver->set_online(gdev);
4406 err:
4407         return rc;
4408 }
4409
4410 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4411 {
4412         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4413         return card->discipline.ccwgdriver->set_offline(gdev);
4414 }
4415
4416 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4417 {
4418         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4419         if (card->discipline.ccwgdriver &&
4420             card->discipline.ccwgdriver->shutdown)
4421                 card->discipline.ccwgdriver->shutdown(gdev);
4422 }
4423
4424 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4425 {
4426         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4427         if (card->discipline.ccwgdriver &&
4428             card->discipline.ccwgdriver->prepare)
4429                 return card->discipline.ccwgdriver->prepare(gdev);
4430         return 0;
4431 }
4432
4433 static void qeth_core_complete(struct ccwgroup_device *gdev)
4434 {
4435         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4436         if (card->discipline.ccwgdriver &&
4437             card->discipline.ccwgdriver->complete)
4438                 card->discipline.ccwgdriver->complete(gdev);
4439 }
4440
4441 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4442 {
4443         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4444         if (card->discipline.ccwgdriver &&
4445             card->discipline.ccwgdriver->freeze)
4446                 return card->discipline.ccwgdriver->freeze(gdev);
4447         return 0;
4448 }
4449
4450 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4451 {
4452         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4453         if (card->discipline.ccwgdriver &&
4454             card->discipline.ccwgdriver->thaw)
4455                 return card->discipline.ccwgdriver->thaw(gdev);
4456         return 0;
4457 }
4458
4459 static int qeth_core_restore(struct ccwgroup_device *gdev)
4460 {
4461         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4462         if (card->discipline.ccwgdriver &&
4463             card->discipline.ccwgdriver->restore)
4464                 return card->discipline.ccwgdriver->restore(gdev);
4465         return 0;
4466 }
4467
4468 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4469         .owner = THIS_MODULE,
4470         .name = "qeth",
4471         .driver_id = 0xD8C5E3C8,
4472         .probe = qeth_core_probe_device,
4473         .remove = qeth_core_remove_device,
4474         .set_online = qeth_core_set_online,
4475         .set_offline = qeth_core_set_offline,
4476         .shutdown = qeth_core_shutdown,
4477         .prepare = qeth_core_prepare,
4478         .complete = qeth_core_complete,
4479         .freeze = qeth_core_freeze,
4480         .thaw = qeth_core_thaw,
4481         .restore = qeth_core_restore,
4482 };
4483
4484 static ssize_t
4485 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4486                            size_t count)
4487 {
4488         int err;
4489         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4490                                         qeth_core_ccwgroup_driver.driver_id);
4491         if (err)
4492                 return err;
4493         else
4494                 return count;
4495 }
4496
4497 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4498
4499 static struct {
4500         const char str[ETH_GSTRING_LEN];
4501 } qeth_ethtool_stats_keys[] = {
4502 /*  0 */{"rx skbs"},
4503         {"rx buffers"},
4504         {"tx skbs"},
4505         {"tx buffers"},
4506         {"tx skbs no packing"},
4507         {"tx buffers no packing"},
4508         {"tx skbs packing"},
4509         {"tx buffers packing"},
4510         {"tx sg skbs"},
4511         {"tx sg frags"},
4512 /* 10 */{"rx sg skbs"},
4513         {"rx sg frags"},
4514         {"rx sg page allocs"},
4515         {"tx large kbytes"},
4516         {"tx large count"},
4517         {"tx pk state ch n->p"},
4518         {"tx pk state ch p->n"},
4519         {"tx pk watermark low"},
4520         {"tx pk watermark high"},
4521         {"queue 0 buffer usage"},
4522 /* 20 */{"queue 1 buffer usage"},
4523         {"queue 2 buffer usage"},
4524         {"queue 3 buffer usage"},
4525         {"rx handler time"},
4526         {"rx handler count"},
4527         {"rx do_QDIO time"},
4528         {"rx do_QDIO count"},
4529         {"tx handler time"},
4530         {"tx handler count"},
4531         {"tx time"},
4532 /* 30 */{"tx count"},
4533         {"tx do_QDIO time"},
4534         {"tx do_QDIO count"},
4535         {"tx csum"},
4536         {"tx lin"},
4537 };
4538
4539 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4540 {
4541         switch (stringset) {
4542         case ETH_SS_STATS:
4543                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4544         default:
4545                 return -EINVAL;
4546         }
4547 }
4548 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4549
4550 void qeth_core_get_ethtool_stats(struct net_device *dev,
4551                 struct ethtool_stats *stats, u64 *data)
4552 {
4553         struct qeth_card *card = dev->ml_priv;
4554         data[0] = card->stats.rx_packets -
4555                                 card->perf_stats.initial_rx_packets;
4556         data[1] = card->perf_stats.bufs_rec;
4557         data[2] = card->stats.tx_packets -
4558                                 card->perf_stats.initial_tx_packets;
4559         data[3] = card->perf_stats.bufs_sent;
4560         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4561                         - card->perf_stats.skbs_sent_pack;
4562         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4563         data[6] = card->perf_stats.skbs_sent_pack;
4564         data[7] = card->perf_stats.bufs_sent_pack;
4565         data[8] = card->perf_stats.sg_skbs_sent;
4566         data[9] = card->perf_stats.sg_frags_sent;
4567         data[10] = card->perf_stats.sg_skbs_rx;
4568         data[11] = card->perf_stats.sg_frags_rx;
4569         data[12] = card->perf_stats.sg_alloc_page_rx;
4570         data[13] = (card->perf_stats.large_send_bytes >> 10);
4571         data[14] = card->perf_stats.large_send_cnt;
4572         data[15] = card->perf_stats.sc_dp_p;
4573         data[16] = card->perf_stats.sc_p_dp;
4574         data[17] = QETH_LOW_WATERMARK_PACK;
4575         data[18] = QETH_HIGH_WATERMARK_PACK;
4576         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4577         data[20] = (card->qdio.no_out_queues > 1) ?
4578                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4579         data[21] = (card->qdio.no_out_queues > 2) ?
4580                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4581         data[22] = (card->qdio.no_out_queues > 3) ?
4582                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4583         data[23] = card->perf_stats.inbound_time;
4584         data[24] = card->perf_stats.inbound_cnt;
4585         data[25] = card->perf_stats.inbound_do_qdio_time;
4586         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4587         data[27] = card->perf_stats.outbound_handler_time;
4588         data[28] = card->perf_stats.outbound_handler_cnt;
4589         data[29] = card->perf_stats.outbound_time;
4590         data[30] = card->perf_stats.outbound_cnt;
4591         data[31] = card->perf_stats.outbound_do_qdio_time;
4592         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4593         data[33] = card->perf_stats.tx_csum;
4594         data[34] = card->perf_stats.tx_lin;
4595 }
4596 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4597
4598 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4599 {
4600         switch (stringset) {
4601         case ETH_SS_STATS:
4602                 memcpy(data, &qeth_ethtool_stats_keys,
4603                         sizeof(qeth_ethtool_stats_keys));
4604                 break;
4605         default:
4606                 WARN_ON(1);
4607                 break;
4608         }
4609 }
4610 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4611
4612 void qeth_core_get_drvinfo(struct net_device *dev,
4613                 struct ethtool_drvinfo *info)
4614 {
4615         struct qeth_card *card = dev->ml_priv;
4616         if (card->options.layer2)
4617                 strcpy(info->driver, "qeth_l2");
4618         else
4619                 strcpy(info->driver, "qeth_l3");
4620
4621         strcpy(info->version, "1.0");
4622         strcpy(info->fw_version, card->info.mcl_level);
4623         sprintf(info->bus_info, "%s/%s/%s",
4624                         CARD_RDEV_ID(card),
4625                         CARD_WDEV_ID(card),
4626                         CARD_DDEV_ID(card));
4627 }
4628 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4629
4630 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4631                                         struct ethtool_cmd *ecmd)
4632 {
4633         struct qeth_card *card = netdev->ml_priv;
4634         enum qeth_link_types link_type;
4635
4636         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4637                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4638         else
4639                 link_type = card->info.link_type;
4640
4641         ecmd->transceiver = XCVR_INTERNAL;
4642         ecmd->supported = SUPPORTED_Autoneg;
4643         ecmd->advertising = ADVERTISED_Autoneg;
4644         ecmd->duplex = DUPLEX_FULL;
4645         ecmd->autoneg = AUTONEG_ENABLE;
4646
4647         switch (link_type) {
4648         case QETH_LINK_TYPE_FAST_ETH:
4649         case QETH_LINK_TYPE_LANE_ETH100:
4650                 ecmd->supported |= SUPPORTED_10baseT_Half |
4651                                         SUPPORTED_10baseT_Full |
4652                                         SUPPORTED_100baseT_Half |
4653                                         SUPPORTED_100baseT_Full |
4654                                         SUPPORTED_TP;
4655                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4656                                         ADVERTISED_10baseT_Full |
4657                                         ADVERTISED_100baseT_Half |
4658                                         ADVERTISED_100baseT_Full |
4659                                         ADVERTISED_TP;
4660                 ecmd->speed = SPEED_100;
4661                 ecmd->port = PORT_TP;
4662                 break;
4663
4664         case QETH_LINK_TYPE_GBIT_ETH:
4665         case QETH_LINK_TYPE_LANE_ETH1000:
4666                 ecmd->supported |= SUPPORTED_10baseT_Half |
4667                                         SUPPORTED_10baseT_Full |
4668                                         SUPPORTED_100baseT_Half |
4669                                         SUPPORTED_100baseT_Full |
4670                                         SUPPORTED_1000baseT_Half |
4671                                         SUPPORTED_1000baseT_Full |
4672                                         SUPPORTED_FIBRE;
4673                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4674                                         ADVERTISED_10baseT_Full |
4675                                         ADVERTISED_100baseT_Half |
4676                                         ADVERTISED_100baseT_Full |
4677                                         ADVERTISED_1000baseT_Half |
4678                                         ADVERTISED_1000baseT_Full |
4679                                         ADVERTISED_FIBRE;
4680                 ecmd->speed = SPEED_1000;
4681                 ecmd->port = PORT_FIBRE;
4682                 break;
4683
4684         case QETH_LINK_TYPE_10GBIT_ETH:
4685                 ecmd->supported |= SUPPORTED_10baseT_Half |
4686                                         SUPPORTED_10baseT_Full |
4687                                         SUPPORTED_100baseT_Half |
4688                                         SUPPORTED_100baseT_Full |
4689                                         SUPPORTED_1000baseT_Half |
4690                                         SUPPORTED_1000baseT_Full |
4691                                         SUPPORTED_10000baseT_Full |
4692                                         SUPPORTED_FIBRE;
4693                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4694                                         ADVERTISED_10baseT_Full |
4695                                         ADVERTISED_100baseT_Half |
4696                                         ADVERTISED_100baseT_Full |
4697                                         ADVERTISED_1000baseT_Half |
4698                                         ADVERTISED_1000baseT_Full |
4699                                         ADVERTISED_10000baseT_Full |
4700                                         ADVERTISED_FIBRE;
4701                 ecmd->speed = SPEED_10000;
4702                 ecmd->port = PORT_FIBRE;
4703                 break;
4704
4705         default:
4706                 ecmd->supported |= SUPPORTED_10baseT_Half |
4707                                         SUPPORTED_10baseT_Full |
4708                                         SUPPORTED_TP;
4709                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4710                                         ADVERTISED_10baseT_Full |
4711                                         ADVERTISED_TP;
4712                 ecmd->speed = SPEED_10;
4713                 ecmd->port = PORT_TP;
4714         }
4715
4716         return 0;
4717 }
4718 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4719
4720 static int __init qeth_core_init(void)
4721 {
4722         int rc;
4723
4724         pr_info("loading core functions\n");
4725         INIT_LIST_HEAD(&qeth_core_card_list.list);
4726         rwlock_init(&qeth_core_card_list.rwlock);
4727
4728         rc = qeth_register_dbf_views();
4729         if (rc)
4730                 goto out_err;
4731         rc = ccw_driver_register(&qeth_ccw_driver);
4732         if (rc)
4733                 goto ccw_err;
4734         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4735         if (rc)
4736                 goto ccwgroup_err;
4737         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4738                                 &driver_attr_group);
4739         if (rc)
4740                 goto driver_err;
4741         qeth_core_root_dev = root_device_register("qeth");
4742         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4743         if (rc)
4744                 goto register_err;
4745
4746         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4747                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4748         if (!qeth_core_header_cache) {
4749                 rc = -ENOMEM;
4750                 goto slab_err;
4751         }
4752
4753         return 0;
4754 slab_err:
4755         root_device_unregister(qeth_core_root_dev);
4756 register_err:
4757         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4758                            &driver_attr_group);
4759 driver_err:
4760         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4761 ccwgroup_err:
4762         ccw_driver_unregister(&qeth_ccw_driver);
4763 ccw_err:
4764         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4765         qeth_unregister_dbf_views();
4766 out_err:
4767         pr_err("Initializing the qeth device driver failed\n");
4768         return rc;
4769 }
4770
4771 static void __exit qeth_core_exit(void)
4772 {
4773         root_device_unregister(qeth_core_root_dev);
4774         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4775                            &driver_attr_group);
4776         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4777         ccw_driver_unregister(&qeth_ccw_driver);
4778         kmem_cache_destroy(qeth_core_header_cache);
4779         qeth_unregister_dbf_views();
4780         pr_info("core functions removed\n");
4781 }
4782
4783 module_init(qeth_core_init);
4784 module_exit(qeth_core_exit);
4785 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4786 MODULE_DESCRIPTION("qeth core functions");
4787 MODULE_LICENSE("GPL");