drivers/s390/net/qeth_core_main.c

   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007
   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 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/string.h>
  14 #include <linux/errno.h>
  15 #include <linux/kernel.h>
  16 #include <linux/ip.h>
  17 #include <linux/ipv6.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21
  22 #include <asm-s390/ebcdic.h>
  23 #include <asm-s390/io.h>
  24 #include <asm/s390_rdev.h>
  25
  26 #include "qeth_core.h"
  27 #include "qeth_core_offl.h"
  28
  29 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  30         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  31         /*                   N  P  A    M  L  V                      H  */
  32         [QETH_DBF_SETUP] = {"qeth_setup",
  33                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  34         [QETH_DBF_QERR]  = {"qeth_qerr",
  35                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_TRACE] = {"qeth_trace",
  37                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg",
  39                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  40         [QETH_DBF_SENSE] = {"qeth_sense",
  41                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  42         [QETH_DBF_MISC]  = {"qeth_misc",
  43                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  44         [QETH_DBF_CTRL]  = {"qeth_control",
  45                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  46 };
  47 EXPORT_SYMBOL_GPL(qeth_dbf);
  48
  49 struct qeth_card_list_struct qeth_core_card_list;
  50 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  51
  52 static struct device *qeth_core_root_dev;
  53 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  54 static struct lock_class_key qdio_out_skb_queue_key;
  55
  56 static void qeth_send_control_data_cb(struct qeth_channel *,
  57                         struct qeth_cmd_buffer *);
  58 static int qeth_issue_next_read(struct qeth_card *);
  59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  61 static void qeth_free_buffer_pool(struct qeth_card *);
  62 static int qeth_qdio_establish(struct qeth_card *);
  63
  64
  65 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  66                 struct qdio_buffer *buffer, int is_tso,
  67                 int *next_element_to_fill)
  68 {
  69         struct skb_frag_struct *frag;
  70         int fragno;
  71         unsigned long addr;
  72         int element, cnt, dlen;
  73
  74         fragno = skb_shinfo(skb)->nr_frags;
  75         element = *next_element_to_fill;
  76         dlen = 0;
  77
  78         if (is_tso)
  79                 buffer->element[element].flags =
  80                         SBAL_FLAGS_MIDDLE_FRAG;
  81         else
  82                 buffer->element[element].flags =
  83                         SBAL_FLAGS_FIRST_FRAG;
  84         dlen = skb->len - skb->data_len;
  85         if (dlen) {
  86                 buffer->element[element].addr = skb->data;
  87                 buffer->element[element].length = dlen;
  88                 element++;
  89         }
  90         for (cnt = 0; cnt < fragno; cnt++) {
  91                 frag = &skb_shinfo(skb)->frags[cnt];
  92                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  93                         frag->page_offset;
  94                 buffer->element[element].addr = (char *)addr;
  95                 buffer->element[element].length = frag->size;
  96                 if (cnt < (fragno - 1))
  97                         buffer->element[element].flags =
  98                                 SBAL_FLAGS_MIDDLE_FRAG;
  99                 else
 100                         buffer->element[element].flags =
 101                                 SBAL_FLAGS_LAST_FRAG;
 102                 element++;
 103         }
 104         *next_element_to_fill = element;
 105 }
 106
 107 static inline const char *qeth_get_cardname(struct qeth_card *card)
 108 {
 109         if (card->info.guestlan) {
 110                 switch (card->info.type) {
 111                 case QETH_CARD_TYPE_OSAE:
 112                         return " Guest LAN QDIO";
 113                 case QETH_CARD_TYPE_IQD:
 114                         return " Guest LAN Hiper";
 115                 default:
 116                         return " unknown";
 117                 }
 118         } else {
 119                 switch (card->info.type) {
 120                 case QETH_CARD_TYPE_OSAE:
 121                         return " OSD Express";
 122                 case QETH_CARD_TYPE_IQD:
 123                         return " HiperSockets";
 124                 case QETH_CARD_TYPE_OSN:
 125                         return " OSN QDIO";
 126                 default:
 127                         return " unknown";
 128                 }
 129         }
 130         return " n/a";
 131 }
 132
 133 /* max length to be returned: 14 */
 134 const char *qeth_get_cardname_short(struct qeth_card *card)
 135 {
 136         if (card->info.guestlan) {
 137                 switch (card->info.type) {
 138                 case QETH_CARD_TYPE_OSAE:
 139                         return "GuestLAN QDIO";
 140                 case QETH_CARD_TYPE_IQD:
 141                         return "GuestLAN Hiper";
 142                 default:
 143                         return "unknown";
 144                 }
 145         } else {
 146                 switch (card->info.type) {
 147                 case QETH_CARD_TYPE_OSAE:
 148                         switch (card->info.link_type) {
 149                         case QETH_LINK_TYPE_FAST_ETH:
 150                                 return "OSD_100";
 151                         case QETH_LINK_TYPE_HSTR:
 152                                 return "HSTR";
 153                         case QETH_LINK_TYPE_GBIT_ETH:
 154                                 return "OSD_1000";
 155                         case QETH_LINK_TYPE_10GBIT_ETH:
 156                                 return "OSD_10GIG";
 157                         case QETH_LINK_TYPE_LANE_ETH100:
 158                                 return "OSD_FE_LANE";
 159                         case QETH_LINK_TYPE_LANE_TR:
 160                                 return "OSD_TR_LANE";
 161                         case QETH_LINK_TYPE_LANE_ETH1000:
 162                                 return "OSD_GbE_LANE";
 163                         case QETH_LINK_TYPE_LANE:
 164                                 return "OSD_ATM_LANE";
 165                         default:
 166                                 return "OSD_Express";
 167                         }
 168                 case QETH_CARD_TYPE_IQD:
 169                         return "HiperSockets";
 170                 case QETH_CARD_TYPE_OSN:
 171                         return "OSN";
 172                 default:
 173                         return "unknown";
 174                 }
 175         }
 176         return "n/a";
 177 }
 178
 179 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 180                          int clear_start_mask)
 181 {
 182         unsigned long flags;
 183
 184         spin_lock_irqsave(&card->thread_mask_lock, flags);
 185         card->thread_allowed_mask = threads;
 186         if (clear_start_mask)
 187                 card->thread_start_mask &= threads;
 188         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 189         wake_up(&card->wait_q);
 190 }
 191 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 192
 193 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 194 {
 195         unsigned long flags;
 196         int rc = 0;
 197
 198         spin_lock_irqsave(&card->thread_mask_lock, flags);
 199         rc = (card->thread_running_mask & threads);
 200         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 201         return rc;
 202 }
 203 EXPORT_SYMBOL_GPL(qeth_threads_running);
 204
 205 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 206 {
 207         return wait_event_interruptible(card->wait_q,
 208                         qeth_threads_running(card, threads) == 0);
 209 }
 210 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 211
 212 void qeth_clear_working_pool_list(struct qeth_card *card)
 213 {
 214         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 215
 216         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 217         list_for_each_entry_safe(pool_entry, tmp,
 218                             &card->qdio.in_buf_pool.entry_list, list){
 219                         list_del(&pool_entry->list);
 220         }
 221 }
 222 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 223
 224 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 225 {
 226         struct qeth_buffer_pool_entry *pool_entry;
 227         void *ptr;
 228         int i, j;
 229
 230         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 231         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 232                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 233                 if (!pool_entry) {
 234                         qeth_free_buffer_pool(card);
 235                         return -ENOMEM;
 236                 }
 237                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 238                         ptr = (void *) __get_free_page(GFP_KERNEL);
 239                         if (!ptr) {
 240                                 while (j > 0)
 241                                         free_page((unsigned long)
 242                                                   pool_entry->elements[--j]);
 243                                 kfree(pool_entry);
 244                                 qeth_free_buffer_pool(card);
 245                                 return -ENOMEM;
 246                         }
 247                         pool_entry->elements[j] = ptr;
 248                 }
 249                 list_add(&pool_entry->init_list,
 250                          &card->qdio.init_pool.entry_list);
 251         }
 252         return 0;
 253 }
 254
 255 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 256 {
 257         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 258
 259         if ((card->state != CARD_STATE_DOWN) &&
 260             (card->state != CARD_STATE_RECOVER))
 261                 return -EPERM;
 262
 263         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 264         qeth_clear_working_pool_list(card);
 265         qeth_free_buffer_pool(card);
 266         card->qdio.in_buf_pool.buf_count = bufcnt;
 267         card->qdio.init_pool.buf_count = bufcnt;
 268         return qeth_alloc_buffer_pool(card);
 269 }
 270
 271 int qeth_set_large_send(struct qeth_card *card,
 272                 enum qeth_large_send_types type)
 273 {
 274         int rc = 0;
 275
 276         if (card->dev == NULL) {
 277                 card->options.large_send = type;
 278                 return 0;
 279         }
 280         if (card->state == CARD_STATE_UP)
 281                 netif_tx_disable(card->dev);
 282         card->options.large_send = type;
 283         switch (card->options.large_send) {
 284         case QETH_LARGE_SEND_EDDP:
 285                 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 286                                         NETIF_F_HW_CSUM;
 287                 break;
 288         case QETH_LARGE_SEND_TSO:
 289                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 290                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 291                                                 NETIF_F_HW_CSUM;
 292                 } else {
 293                         PRINT_WARN("TSO not supported on %s. "
 294                                    "large_send set to 'no'.\n",
 295                                    card->dev->name);
 296                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 297                                                 NETIF_F_HW_CSUM);
 298                         card->options.large_send = QETH_LARGE_SEND_NO;
 299                         rc = -EOPNOTSUPP;
 300                 }
 301                 break;
 302         default: /* includes QETH_LARGE_SEND_NO */
 303                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 304                                         NETIF_F_HW_CSUM);
 305                 break;
 306         }
 307         if (card->state == CARD_STATE_UP)
 308                 netif_wake_queue(card->dev);
 309         return rc;
 310 }
 311 EXPORT_SYMBOL_GPL(qeth_set_large_send);
 312
 313 static int qeth_issue_next_read(struct qeth_card *card)
 314 {
 315         int rc;
 316         struct qeth_cmd_buffer *iob;
 317
 318         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 319         if (card->read.state != CH_STATE_UP)
 320                 return -EIO;
 321         iob = qeth_get_buffer(&card->read);
 322         if (!iob) {
 323                 PRINT_WARN("issue_next_read failed: no iob available!\n");
 324                 return -ENOMEM;
 325         }
 326         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 327         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 328         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 329                               (addr_t) iob, 0, 0);
 330         if (rc) {
 331                 PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
 332                 atomic_set(&card->read.irq_pending, 0);
 333                 qeth_schedule_recovery(card);
 334                 wake_up(&card->wait_q);
 335         }
 336         return rc;
 337 }
 338
 339 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 340 {
 341         struct qeth_reply *reply;
 342
 343         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 344         if (reply) {
 345                 atomic_set(&reply->refcnt, 1);
 346                 atomic_set(&reply->received, 0);
 347                 reply->card = card;
 348         };
 349         return reply;
 350 }
 351
 352 static void qeth_get_reply(struct qeth_reply *reply)
 353 {
 354         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 355         atomic_inc(&reply->refcnt);
 356 }
 357
 358 static void qeth_put_reply(struct qeth_reply *reply)
 359 {
 360         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 361         if (atomic_dec_and_test(&reply->refcnt))
 362                 kfree(reply);
 363 }
 364
 365 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 366                 struct qeth_card *card)
 367 {
 368         char *ipa_name;
 369         int com = cmd->hdr.command;
 370         ipa_name = qeth_get_ipa_cmd_name(com);
 371         if (rc)
 372                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 373                                 ipa_name, com, QETH_CARD_IFNAME(card),
 374                                         rc, qeth_get_ipa_msg(rc));
 375         else
 376                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 377                                 ipa_name, com, QETH_CARD_IFNAME(card));
 378 }
 379
 380 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 381                 struct qeth_cmd_buffer *iob)
 382 {
 383         struct qeth_ipa_cmd *cmd = NULL;
 384
 385         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 386         if (IS_IPA(iob->data)) {
 387                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 388                 if (IS_IPA_REPLY(cmd)) {
 389                         if (cmd->hdr.command < IPA_CMD_SETCCID ||
 390                             cmd->hdr.command > IPA_CMD_MODCCID)
 391                                 qeth_issue_ipa_msg(cmd,
 392                                                 cmd->hdr.return_code, card);
 393                         return cmd;
 394                 } else {
 395                         switch (cmd->hdr.command) {
 396                         case IPA_CMD_STOPLAN:
 397                                 PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
 398                                            "there is a network problem or "
 399                                            "someone pulled the cable or "
 400                                            "disabled the port.\n",
 401                                            QETH_CARD_IFNAME(card),
 402                                            card->info.chpid);
 403                                 card->lan_online = 0;
 404                                 if (card->dev && netif_carrier_ok(card->dev))
 405                                         netif_carrier_off(card->dev);
 406                                 return NULL;
 407                         case IPA_CMD_STARTLAN:
 408                                 PRINT_INFO("Link reestablished on %s "
 409                                            "(CHPID 0x%X). Scheduling "
 410                                            "IP address reset.\n",
 411                                            QETH_CARD_IFNAME(card),
 412                                            card->info.chpid);
 413                                 netif_carrier_on(card->dev);
 414                                 card->lan_online = 1;
 415                                 qeth_schedule_recovery(card);
 416                                 return NULL;
 417                         case IPA_CMD_MODCCID:
 418                                 return cmd;
 419                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 420                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 421                                 break;
 422                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 423                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 424                                 break;
 425                         default:
 426                                 PRINT_WARN("Received data is IPA "
 427                                            "but not a reply!\n");
 428                                 break;
 429                         }
 430                 }
 431         }
 432         return cmd;
 433 }
 434
 435 void qeth_clear_ipacmd_list(struct qeth_card *card)
 436 {
 437         struct qeth_reply *reply, *r;
 438         unsigned long flags;
 439
 440         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 441
 442         spin_lock_irqsave(&card->lock, flags);
 443         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 444                 qeth_get_reply(reply);
 445                 reply->rc = -EIO;
 446                 atomic_inc(&reply->received);
 447                 list_del_init(&reply->list);
 448                 wake_up(&reply->wait_q);
 449                 qeth_put_reply(reply);
 450         }
 451         spin_unlock_irqrestore(&card->lock, flags);
 452 }
 453 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 454
 455 static int qeth_check_idx_response(unsigned char *buffer)
 456 {
 457         if (!buffer)
 458                 return 0;
 459
 460         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 461         if ((buffer[2] & 0xc0) == 0xc0) {
 462                 PRINT_WARN("received an IDX TERMINATE "
 463                            "with cause code 0x%02x%s\n",
 464                            buffer[4],
 465                            ((buffer[4] == 0x22) ?
 466                             " -- try another portname" : ""));
 467                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 468                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 469                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 470                 return -EIO;
 471         }
 472         return 0;
 473 }
 474
 475 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 476                 __u32 len)
 477 {
 478         struct qeth_card *card;
 479
 480         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 481         card = CARD_FROM_CDEV(channel->ccwdev);
 482         if (channel == &card->read)
 483                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 484         else
 485                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 486         channel->ccw.count = len;
 487         channel->ccw.cda = (__u32) __pa(iob);
 488 }
 489
 490 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 491 {
 492         __u8 index;
 493
 494         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 495         index = channel->io_buf_no;
 496         do {
 497                 if (channel->iob[index].state == BUF_STATE_FREE) {
 498                         channel->iob[index].state = BUF_STATE_LOCKED;
 499                         channel->io_buf_no = (channel->io_buf_no + 1) %
 500                                 QETH_CMD_BUFFER_NO;
 501                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 502                         return channel->iob + index;
 503                 }
 504                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 505         } while (index != channel->io_buf_no);
 506
 507         return NULL;
 508 }
 509
 510 void qeth_release_buffer(struct qeth_channel *channel,
 511                 struct qeth_cmd_buffer *iob)
 512 {
 513         unsigned long flags;
 514
 515         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 516         spin_lock_irqsave(&channel->iob_lock, flags);
 517         memset(iob->data, 0, QETH_BUFSIZE);
 518         iob->state = BUF_STATE_FREE;
 519         iob->callback = qeth_send_control_data_cb;
 520         iob->rc = 0;
 521         spin_unlock_irqrestore(&channel->iob_lock, flags);
 522 }
 523 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 524
 525 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 526 {
 527         struct qeth_cmd_buffer *buffer = NULL;
 528         unsigned long flags;
 529
 530         spin_lock_irqsave(&channel->iob_lock, flags);
 531         buffer = __qeth_get_buffer(channel);
 532         spin_unlock_irqrestore(&channel->iob_lock, flags);
 533         return buffer;
 534 }
 535
 536 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 537 {
 538         struct qeth_cmd_buffer *buffer;
 539         wait_event(channel->wait_q,
 540                    ((buffer = qeth_get_buffer(channel)) != NULL));
 541         return buffer;
 542 }
 543 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 544
 545 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 546 {
 547         int cnt;
 548
 549         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 550                 qeth_release_buffer(channel, &channel->iob[cnt]);
 551         channel->buf_no = 0;
 552         channel->io_buf_no = 0;
 553 }
 554 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 555
 556 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 557                   struct qeth_cmd_buffer *iob)
 558 {
 559         struct qeth_card *card;
 560         struct qeth_reply *reply, *r;
 561         struct qeth_ipa_cmd *cmd;
 562         unsigned long flags;
 563         int keep_reply;
 564
 565         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 566
 567         card = CARD_FROM_CDEV(channel->ccwdev);
 568         if (qeth_check_idx_response(iob->data)) {
 569                 qeth_clear_ipacmd_list(card);
 570                 qeth_schedule_recovery(card);
 571                 goto out;
 572         }
 573
 574         cmd = qeth_check_ipa_data(card, iob);
 575         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 576                 goto out;
 577         /*in case of OSN : check if cmd is set */
 578         if (card->info.type == QETH_CARD_TYPE_OSN &&
 579             cmd &&
 580             cmd->hdr.command != IPA_CMD_STARTLAN &&
 581             card->osn_info.assist_cb != NULL) {
 582                 card->osn_info.assist_cb(card->dev, cmd);
 583                 goto out;
 584         }
 585
 586         spin_lock_irqsave(&card->lock, flags);
 587         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 588                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 589                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 590                         qeth_get_reply(reply);
 591                         list_del_init(&reply->list);
 592                         spin_unlock_irqrestore(&card->lock, flags);
 593                         keep_reply = 0;
 594                         if (reply->callback != NULL) {
 595                                 if (cmd) {
 596                                         reply->offset = (__u16)((char *)cmd -
 597                                                         (char *)iob->data);
 598                                         keep_reply = reply->callback(card,
 599                                                         reply,
 600                                                         (unsigned long)cmd);
 601                                 } else
 602                                         keep_reply = reply->callback(card,
 603                                                         reply,
 604                                                         (unsigned long)iob);
 605                         }
 606                         if (cmd)
 607                                 reply->rc = (u16) cmd->hdr.return_code;
 608                         else if (iob->rc)
 609                                 reply->rc = iob->rc;
 610                         if (keep_reply) {
 611                                 spin_lock_irqsave(&card->lock, flags);
 612                                 list_add_tail(&reply->list,
 613                                               &card->cmd_waiter_list);
 614                                 spin_unlock_irqrestore(&card->lock, flags);
 615                         } else {
 616                                 atomic_inc(&reply->received);
 617                                 wake_up(&reply->wait_q);
 618                         }
 619                         qeth_put_reply(reply);
 620                         goto out;
 621                 }
 622         }
 623         spin_unlock_irqrestore(&card->lock, flags);
 624 out:
 625         memcpy(&card->seqno.pdu_hdr_ack,
 626                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 627                 QETH_SEQ_NO_LENGTH);
 628         qeth_release_buffer(channel, iob);
 629 }
 630
 631 static int qeth_setup_channel(struct qeth_channel *channel)
 632 {
 633         int cnt;
 634
 635         QETH_DBF_TEXT(SETUP, 2, "setupch");
 636         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 637                 channel->iob[cnt].data = (char *)
 638                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 639                 if (channel->iob[cnt].data == NULL)
 640                         break;
 641                 channel->iob[cnt].state = BUF_STATE_FREE;
 642                 channel->iob[cnt].channel = channel;
 643                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 644                 channel->iob[cnt].rc = 0;
 645         }
 646         if (cnt < QETH_CMD_BUFFER_NO) {
 647                 while (cnt-- > 0)
 648                         kfree(channel->iob[cnt].data);
 649                 return -ENOMEM;
 650         }
 651         channel->buf_no = 0;
 652         channel->io_buf_no = 0;
 653         atomic_set(&channel->irq_pending, 0);
 654         spin_lock_init(&channel->iob_lock);
 655
 656         init_waitqueue_head(&channel->wait_q);
 657         return 0;
 658 }
 659
 660 static int qeth_set_thread_start_bit(struct qeth_card *card,
 661                 unsigned long thread)
 662 {
 663         unsigned long flags;
 664
 665         spin_lock_irqsave(&card->thread_mask_lock, flags);
 666         if (!(card->thread_allowed_mask & thread) ||
 667               (card->thread_start_mask & thread)) {
 668                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 669                 return -EPERM;
 670         }
 671         card->thread_start_mask |= thread;
 672         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 673         return 0;
 674 }
 675
 676 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 677 {
 678         unsigned long flags;
 679
 680         spin_lock_irqsave(&card->thread_mask_lock, flags);
 681         card->thread_start_mask &= ~thread;
 682         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 683         wake_up(&card->wait_q);
 684 }
 685 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 686
 687 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 688 {
 689         unsigned long flags;
 690
 691         spin_lock_irqsave(&card->thread_mask_lock, flags);
 692         card->thread_running_mask &= ~thread;
 693         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 694         wake_up(&card->wait_q);
 695 }
 696 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 697
 698 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 699 {
 700         unsigned long flags;
 701         int rc = 0;
 702
 703         spin_lock_irqsave(&card->thread_mask_lock, flags);
 704         if (card->thread_start_mask & thread) {
 705                 if ((card->thread_allowed_mask & thread) &&
 706                     !(card->thread_running_mask & thread)) {
 707                         rc = 1;
 708                         card->thread_start_mask &= ~thread;
 709                         card->thread_running_mask |= thread;
 710                 } else
 711                         rc = -EPERM;
 712         }
 713         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 714         return rc;
 715 }
 716
 717 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 718 {
 719         int rc = 0;
 720
 721         wait_event(card->wait_q,
 722                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 723         return rc;
 724 }
 725 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 726
 727 void qeth_schedule_recovery(struct qeth_card *card)
 728 {
 729         QETH_DBF_TEXT(TRACE, 2, "startrec");
 730         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 731                 schedule_work(&card->kernel_thread_starter);
 732 }
 733 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 734
 735 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 736 {
 737         int dstat, cstat;
 738         char *sense;
 739
 740         sense = (char *) irb->ecw;
 741         cstat = irb->scsw.cstat;
 742         dstat = irb->scsw.dstat;
 743
 744         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 745                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 746                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 747                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 748                 PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
 749                            cdev->dev.bus_id, dstat, cstat);
 750                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 751                                 16, 1, irb, 64, 1);
 752                 return 1;
 753         }
 754
 755         if (dstat & DEV_STAT_UNIT_CHECK) {
 756                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 757                     SENSE_RESETTING_EVENT_FLAG) {
 758                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 759                         return 1;
 760                 }
 761                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 762                     SENSE_COMMAND_REJECT_FLAG) {
 763                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 764                         return 0;
 765                 }
 766                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 767                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 768                         return 1;
 769                 }
 770                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 771                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 772                         return 0;
 773                 }
 774                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 775                         return 1;
 776         }
 777         return 0;
 778 }
 779
 780 static long __qeth_check_irb_error(struct ccw_device *cdev,
 781                 unsigned long intparm, struct irb *irb)
 782 {
 783         if (!IS_ERR(irb))
 784                 return 0;
 785
 786         switch (PTR_ERR(irb)) {
 787         case -EIO:
 788                 PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
 789                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 790                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 791                 break;
 792         case -ETIMEDOUT:
 793                 PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
 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                 PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
 807                            cdev->dev.bus_id);
 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.cstat;
 830         dstat = irb->scsw.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.fctl & (SCSW_FCTL_CLEAR_FUNC))
 849                 channel->state = CH_STATE_STOPPED;
 850
 851         if (irb->scsw.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                         /* TODO: we should make this s390dbf */
 874                         PRINT_WARN("sense data available on channel %s.\n",
 875                                    CHANNEL_ID(channel));
 876                         PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
 877                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 878                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 879                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 880                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 881                 }
 882                 if (intparm == QETH_RCD_PARM) {
 883                         channel->state = CH_STATE_DOWN;
 884                         goto out;
 885                 }
 886                 rc = qeth_get_problem(cdev, irb);
 887                 if (rc) {
 888                         qeth_schedule_recovery(card);
 889                         goto out;
 890                 }
 891         }
 892
 893         if (intparm == QETH_RCD_PARM) {
 894                 channel->state = CH_STATE_RCD_DONE;
 895                 goto out;
 896         }
 897         if (intparm) {
 898                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 899                 buffer->state = BUF_STATE_PROCESSED;
 900         }
 901         if (channel == &card->data)
 902                 return;
 903         if (channel == &card->read &&
 904             channel->state == CH_STATE_UP)
 905                 qeth_issue_next_read(card);
 906
 907         iob = channel->iob;
 908         index = channel->buf_no;
 909         while (iob[index].state == BUF_STATE_PROCESSED) {
 910                 if (iob[index].callback != NULL)
 911                         iob[index].callback(channel, iob + index);
 912
 913                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 914         }
 915         channel->buf_no = index;
 916 out:
 917         wake_up(&card->wait_q);
 918         return;
 919 }
 920
 921 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 922                  struct qeth_qdio_out_buffer *buf)
 923 {
 924         int i;
 925         struct sk_buff *skb;
 926
 927         /* is PCI flag set on buffer? */
 928         if (buf->buffer->element[0].flags & 0x40)
 929                 atomic_dec(&queue->set_pci_flags_count);
 930
 931         skb = skb_dequeue(&buf->skb_list);
 932         while (skb) {
 933                 atomic_dec(&skb->users);
 934                 dev_kfree_skb_any(skb);
 935                 skb = skb_dequeue(&buf->skb_list);
 936         }
 937         qeth_eddp_buf_release_contexts(buf);
 938         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 939                 buf->buffer->element[i].length = 0;
 940                 buf->buffer->element[i].addr = NULL;
 941                 buf->buffer->element[i].flags = 0;
 942         }
 943         buf->next_element_to_fill = 0;
 944         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 945 }
 946
 947 void qeth_clear_qdio_buffers(struct qeth_card *card)
 948 {
 949         int i, j;
 950
 951         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 952         /* clear outbound buffers to free skbs */
 953         for (i = 0; i < card->qdio.no_out_queues; ++i)
 954                 if (card->qdio.out_qs[i]) {
 955                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 956                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 957                                                 &card->qdio.out_qs[i]->bufs[j]);
 958                 }
 959 }
 960 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 961
 962 static void qeth_free_buffer_pool(struct qeth_card *card)
 963 {
 964         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 965         int i = 0;
 966         QETH_DBF_TEXT(TRACE, 5, "freepool");
 967         list_for_each_entry_safe(pool_entry, tmp,
 968                                  &card->qdio.init_pool.entry_list, init_list){
 969                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 970                         free_page((unsigned long)pool_entry->elements[i]);
 971                 list_del(&pool_entry->init_list);
 972                 kfree(pool_entry);
 973         }
 974 }
 975
 976 static void qeth_free_qdio_buffers(struct qeth_card *card)
 977 {
 978         int i, j;
 979
 980         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
 981         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 982                 QETH_QDIO_UNINITIALIZED)
 983                 return;
 984         kfree(card->qdio.in_q);
 985         card->qdio.in_q = NULL;
 986         /* inbound buffer pool */
 987         qeth_free_buffer_pool(card);
 988         /* free outbound qdio_qs */
 989         if (card->qdio.out_qs) {
 990                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 991                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 992                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 993                                                 &card->qdio.out_qs[i]->bufs[j]);
 994                         kfree(card->qdio.out_qs[i]);
 995                 }
 996                 kfree(card->qdio.out_qs);
 997                 card->qdio.out_qs = NULL;
 998         }
 999 }
1000
1001 static void qeth_clean_channel(struct qeth_channel *channel)
1002 {
1003         int cnt;
1004
1005         QETH_DBF_TEXT(SETUP, 2, "freech");
1006         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1007                 kfree(channel->iob[cnt].data);
1008 }
1009
1010 static int qeth_is_1920_device(struct qeth_card *card)
1011 {
1012         int single_queue = 0;
1013         struct ccw_device *ccwdev;
1014         struct channelPath_dsc {
1015                 u8 flags;
1016                 u8 lsn;
1017                 u8 desc;
1018                 u8 chpid;
1019                 u8 swla;
1020                 u8 zeroes;
1021                 u8 chla;
1022                 u8 chpp;
1023         } *chp_dsc;
1024
1025         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1026
1027         ccwdev = card->data.ccwdev;
1028         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1029         if (chp_dsc != NULL) {
1030                 /* CHPP field bit 6 == 1 -> single queue */
1031                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1032                 kfree(chp_dsc);
1033         }
1034         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1035         return single_queue;
1036 }
1037
1038 static void qeth_init_qdio_info(struct qeth_card *card)
1039 {
1040         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1041         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1042         /* inbound */
1043         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1044         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1045         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1046         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1047         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1048 }
1049
1050 static void qeth_set_intial_options(struct qeth_card *card)
1051 {
1052         card->options.route4.type = NO_ROUTER;
1053         card->options.route6.type = NO_ROUTER;
1054         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1055         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1056         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1057         card->options.fake_broadcast = 0;
1058         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1059         card->options.fake_ll = 0;
1060         card->options.performance_stats = 0;
1061         card->options.rx_sg_cb = QETH_RX_SG_CB;
1062 }
1063
1064 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1065 {
1066         unsigned long flags;
1067         int rc = 0;
1068
1069         spin_lock_irqsave(&card->thread_mask_lock, flags);
1070         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1071                         (u8) card->thread_start_mask,
1072                         (u8) card->thread_allowed_mask,
1073                         (u8) card->thread_running_mask);
1074         rc = (card->thread_start_mask & thread);
1075         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1076         return rc;
1077 }
1078
1079 static void qeth_start_kernel_thread(struct work_struct *work)
1080 {
1081         struct qeth_card *card = container_of(work, struct qeth_card,
1082                                         kernel_thread_starter);
1083         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1084
1085         if (card->read.state != CH_STATE_UP &&
1086             card->write.state != CH_STATE_UP)
1087                 return;
1088         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1089                 kthread_run(card->discipline.recover, (void *) card,
1090                                 "qeth_recover");
1091 }
1092
1093 static int qeth_setup_card(struct qeth_card *card)
1094 {
1095
1096         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1097         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1098
1099         card->read.state  = CH_STATE_DOWN;
1100         card->write.state = CH_STATE_DOWN;
1101         card->data.state  = CH_STATE_DOWN;
1102         card->state = CARD_STATE_DOWN;
1103         card->lan_online = 0;
1104         card->use_hard_stop = 0;
1105         card->dev = NULL;
1106         spin_lock_init(&card->vlanlock);
1107         spin_lock_init(&card->mclock);
1108         card->vlangrp = NULL;
1109         spin_lock_init(&card->lock);
1110         spin_lock_init(&card->ip_lock);
1111         spin_lock_init(&card->thread_mask_lock);
1112         card->thread_start_mask = 0;
1113         card->thread_allowed_mask = 0;
1114         card->thread_running_mask = 0;
1115         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1116         INIT_LIST_HEAD(&card->ip_list);
1117         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1118         if (!card->ip_tbd_list) {
1119                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1120                 return -ENOMEM;
1121         }
1122         INIT_LIST_HEAD(card->ip_tbd_list);
1123         INIT_LIST_HEAD(&card->cmd_waiter_list);
1124         init_waitqueue_head(&card->wait_q);
1125         /* intial options */
1126         qeth_set_intial_options(card);
1127         /* IP address takeover */
1128         INIT_LIST_HEAD(&card->ipato.entries);
1129         card->ipato.enabled = 0;
1130         card->ipato.invert4 = 0;
1131         card->ipato.invert6 = 0;
1132         /* init QDIO stuff */
1133         qeth_init_qdio_info(card);
1134         return 0;
1135 }
1136
1137 static struct qeth_card *qeth_alloc_card(void)
1138 {
1139         struct qeth_card *card;
1140
1141         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1142         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1143         if (!card)
1144                 return NULL;
1145         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1146         if (qeth_setup_channel(&card->read)) {
1147                 kfree(card);
1148                 return NULL;
1149         }
1150         if (qeth_setup_channel(&card->write)) {
1151                 qeth_clean_channel(&card->read);
1152                 kfree(card);
1153                 return NULL;
1154         }
1155         card->options.layer2 = -1;
1156         return card;
1157 }
1158
1159 static int qeth_determine_card_type(struct qeth_card *card)
1160 {
1161         int i = 0;
1162
1163         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1164
1165         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1166         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1167         while (known_devices[i][4]) {
1168                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1169                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1170                         card->info.type = known_devices[i][4];
1171                         card->qdio.no_out_queues = known_devices[i][8];
1172                         card->info.is_multicast_different = known_devices[i][9];
1173                         if (qeth_is_1920_device(card)) {
1174                                 PRINT_INFO("Priority Queueing not able "
1175                                            "due to hardware limitations!\n");
1176                                 card->qdio.no_out_queues = 1;
1177                                 card->qdio.default_out_queue = 0;
1178                         }
1179                         return 0;
1180                 }
1181                 i++;
1182         }
1183         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1184         PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
1185         return -ENOENT;
1186 }
1187
1188 static int qeth_clear_channel(struct qeth_channel *channel)
1189 {
1190         unsigned long flags;
1191         struct qeth_card *card;
1192         int rc;
1193
1194         QETH_DBF_TEXT(TRACE, 3, "clearch");
1195         card = CARD_FROM_CDEV(channel->ccwdev);
1196         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1197         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1198         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1199
1200         if (rc)
1201                 return rc;
1202         rc = wait_event_interruptible_timeout(card->wait_q,
1203                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1204         if (rc == -ERESTARTSYS)
1205                 return rc;
1206         if (channel->state != CH_STATE_STOPPED)
1207                 return -ETIME;
1208         channel->state = CH_STATE_DOWN;
1209         return 0;
1210 }
1211
1212 static int qeth_halt_channel(struct qeth_channel *channel)
1213 {
1214         unsigned long flags;
1215         struct qeth_card *card;
1216         int rc;
1217
1218         QETH_DBF_TEXT(TRACE, 3, "haltch");
1219         card = CARD_FROM_CDEV(channel->ccwdev);
1220         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1221         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1222         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1223
1224         if (rc)
1225                 return rc;
1226         rc = wait_event_interruptible_timeout(card->wait_q,
1227                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1228         if (rc == -ERESTARTSYS)
1229                 return rc;
1230         if (channel->state != CH_STATE_HALTED)
1231                 return -ETIME;
1232         return 0;
1233 }
1234
1235 static int qeth_halt_channels(struct qeth_card *card)
1236 {
1237         int rc1 = 0, rc2 = 0, rc3 = 0;
1238
1239         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1240         rc1 = qeth_halt_channel(&card->read);
1241         rc2 = qeth_halt_channel(&card->write);
1242         rc3 = qeth_halt_channel(&card->data);
1243         if (rc1)
1244                 return rc1;
1245         if (rc2)
1246                 return rc2;
1247         return rc3;
1248 }
1249
1250 static int qeth_clear_channels(struct qeth_card *card)
1251 {
1252         int rc1 = 0, rc2 = 0, rc3 = 0;
1253
1254         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1255         rc1 = qeth_clear_channel(&card->read);
1256         rc2 = qeth_clear_channel(&card->write);
1257         rc3 = qeth_clear_channel(&card->data);
1258         if (rc1)
1259                 return rc1;
1260         if (rc2)
1261                 return rc2;
1262         return rc3;
1263 }
1264
1265 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1266 {
1267         int rc = 0;
1268
1269         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1270         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1271
1272         if (halt)
1273                 rc = qeth_halt_channels(card);
1274         if (rc)
1275                 return rc;
1276         return qeth_clear_channels(card);
1277 }
1278
1279 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1280 {
1281         int rc = 0;
1282
1283         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1284         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1285                 QETH_QDIO_CLEANING)) {
1286         case QETH_QDIO_ESTABLISHED:
1287                 if (card->info.type == QETH_CARD_TYPE_IQD)
1288                         rc = qdio_cleanup(CARD_DDEV(card),
1289                                 QDIO_FLAG_CLEANUP_USING_HALT);
1290                 else
1291                         rc = qdio_cleanup(CARD_DDEV(card),
1292                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1293                 if (rc)
1294                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1295                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1296                 break;
1297         case QETH_QDIO_CLEANING:
1298                 return rc;
1299         default:
1300                 break;
1301         }
1302         rc = qeth_clear_halt_card(card, use_halt);
1303         if (rc)
1304                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1305         card->state = CARD_STATE_DOWN;
1306         return rc;
1307 }
1308 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1309
1310 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1311                                int *length)
1312 {
1313         struct ciw *ciw;
1314         char *rcd_buf;
1315         int ret;
1316         struct qeth_channel *channel = &card->data;
1317         unsigned long flags;
1318
1319         /*
1320          * scan for RCD command in extended SenseID data
1321          */
1322         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1323         if (!ciw || ciw->cmd == 0)
1324                 return -EOPNOTSUPP;
1325         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1326         if (!rcd_buf)
1327                 return -ENOMEM;
1328
1329         channel->ccw.cmd_code = ciw->cmd;
1330         channel->ccw.cda = (__u32) __pa(rcd_buf);
1331         channel->ccw.count = ciw->count;
1332         channel->ccw.flags = CCW_FLAG_SLI;
1333         channel->state = CH_STATE_RCD;
1334         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1335         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1336                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1337                                        QETH_RCD_TIMEOUT);
1338         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1339         if (!ret)
1340                 wait_event(card->wait_q,
1341                            (channel->state == CH_STATE_RCD_DONE ||
1342                             channel->state == CH_STATE_DOWN));
1343         if (channel->state == CH_STATE_DOWN)
1344                 ret = -EIO;
1345         else
1346                 channel->state = CH_STATE_DOWN;
1347         if (ret) {
1348                 kfree(rcd_buf);
1349                 *buffer = NULL;
1350                 *length = 0;
1351         } else {
1352                 *length = ciw->count;
1353                 *buffer = rcd_buf;
1354         }
1355         return ret;
1356 }
1357
1358 static int qeth_get_unitaddr(struct qeth_card *card)
1359 {
1360         int length;
1361         char *prcd;
1362         int rc;
1363
1364         QETH_DBF_TEXT(SETUP, 2, "getunit");
1365         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1366         if (rc) {
1367                 PRINT_ERR("qeth_read_conf_data for device %s returned %i\n",
1368                         CARD_DDEV_ID(card), rc);
1369                 return rc;
1370         }
1371         card->info.chpid = prcd[30];
1372         card->info.unit_addr2 = prcd[31];
1373         card->info.cula = prcd[63];
1374         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1375                                (prcd[0x11] == _ascebc['M']));
1376         kfree(prcd);
1377         return 0;
1378 }
1379
1380 static void qeth_init_tokens(struct qeth_card *card)
1381 {
1382         card->token.issuer_rm_w = 0x00010103UL;
1383         card->token.cm_filter_w = 0x00010108UL;
1384         card->token.cm_connection_w = 0x0001010aUL;
1385         card->token.ulp_filter_w = 0x0001010bUL;
1386         card->token.ulp_connection_w = 0x0001010dUL;
1387 }
1388
1389 static void qeth_init_func_level(struct qeth_card *card)
1390 {
1391         if (card->ipato.enabled) {
1392                 if (card->info.type == QETH_CARD_TYPE_IQD)
1393                                 card->info.func_level =
1394                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1395                 else
1396                                 card->info.func_level =
1397                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1398         } else {
1399                 if (card->info.type == QETH_CARD_TYPE_IQD)
1400                 /*FIXME:why do we have same values for  dis and ena for
1401                   osae??? */
1402                         card->info.func_level =
1403                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1404                 else
1405                         card->info.func_level =
1406                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1407         }
1408 }
1409
1410 static inline __u16 qeth_raw_devno_from_bus_id(char *id)
1411 {
1412         id += (strlen(id) - 4);
1413         return (__u16) simple_strtoul(id, &id, 16);
1414 }
1415
1416 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1417                 void (*idx_reply_cb)(struct qeth_channel *,
1418                         struct qeth_cmd_buffer *))
1419 {
1420         struct qeth_cmd_buffer *iob;
1421         unsigned long flags;
1422         int rc;
1423         struct qeth_card *card;
1424
1425         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1426         card = CARD_FROM_CDEV(channel->ccwdev);
1427         iob = qeth_get_buffer(channel);
1428         iob->callback = idx_reply_cb;
1429         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1430         channel->ccw.count = QETH_BUFSIZE;
1431         channel->ccw.cda = (__u32) __pa(iob->data);
1432
1433         wait_event(card->wait_q,
1434                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1435         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1436         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1437         rc = ccw_device_start(channel->ccwdev,
1438                               &channel->ccw, (addr_t) iob, 0, 0);
1439         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1440
1441         if (rc) {
1442                 PRINT_ERR("Error2 in activating channel rc=%d\n", rc);
1443                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1444                 atomic_set(&channel->irq_pending, 0);
1445                 wake_up(&card->wait_q);
1446                 return rc;
1447         }
1448         rc = wait_event_interruptible_timeout(card->wait_q,
1449                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1450         if (rc == -ERESTARTSYS)
1451                 return rc;
1452         if (channel->state != CH_STATE_UP) {
1453                 rc = -ETIME;
1454                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1455                 qeth_clear_cmd_buffers(channel);
1456         } else
1457                 rc = 0;
1458         return rc;
1459 }
1460
1461 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1462                 void (*idx_reply_cb)(struct qeth_channel *,
1463                         struct qeth_cmd_buffer *))
1464 {
1465         struct qeth_card *card;
1466         struct qeth_cmd_buffer *iob;
1467         unsigned long flags;
1468         __u16 temp;
1469         __u8 tmp;
1470         int rc;
1471
1472         card = CARD_FROM_CDEV(channel->ccwdev);
1473
1474         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1475
1476         iob = qeth_get_buffer(channel);
1477         iob->callback = idx_reply_cb;
1478         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1479         channel->ccw.count = IDX_ACTIVATE_SIZE;
1480         channel->ccw.cda = (__u32) __pa(iob->data);
1481         if (channel == &card->write) {
1482                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1483                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1484                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1485                 card->seqno.trans_hdr++;
1486         } else {
1487                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1488                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1489                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1490         }
1491         tmp = ((__u8)card->info.portno) | 0x80;
1492         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1493         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1494                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1495         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1496                &card->info.func_level, sizeof(__u16));
1497         temp = qeth_raw_devno_from_bus_id(CARD_DDEV_ID(card));
1498         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
1499         temp = (card->info.cula << 8) + card->info.unit_addr2;
1500         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1501
1502         wait_event(card->wait_q,
1503                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1504         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1505         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1506         rc = ccw_device_start(channel->ccwdev,
1507                               &channel->ccw, (addr_t) iob, 0, 0);
1508         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1509
1510         if (rc) {
1511                 PRINT_ERR("Error1 in activating channel. rc=%d\n", rc);
1512                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1513                 atomic_set(&channel->irq_pending, 0);
1514                 wake_up(&card->wait_q);
1515                 return rc;
1516         }
1517         rc = wait_event_interruptible_timeout(card->wait_q,
1518                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1519         if (rc == -ERESTARTSYS)
1520                 return rc;
1521         if (channel->state != CH_STATE_ACTIVATING) {
1522                 PRINT_WARN("IDX activate timed out!\n");
1523                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1524                 qeth_clear_cmd_buffers(channel);
1525                 return -ETIME;
1526         }
1527         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1528 }
1529
1530 static int qeth_peer_func_level(int level)
1531 {
1532         if ((level & 0xff) == 8)
1533                 return (level & 0xff) + 0x400;
1534         if (((level >> 8) & 3) == 1)
1535                 return (level & 0xff) + 0x200;
1536         return level;
1537 }
1538
1539 static void qeth_idx_write_cb(struct qeth_channel *channel,
1540                 struct qeth_cmd_buffer *iob)
1541 {
1542         struct qeth_card *card;
1543         __u16 temp;
1544
1545         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1546
1547         if (channel->state == CH_STATE_DOWN) {
1548                 channel->state = CH_STATE_ACTIVATING;
1549                 goto out;
1550         }
1551         card = CARD_FROM_CDEV(channel->ccwdev);
1552
1553         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1554                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1555                         PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
1556                                 "adapter exclusively used by another host\n",
1557                         CARD_WDEV_ID(card));
1558                 else
1559                         PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
1560                                 "negative reply\n", CARD_WDEV_ID(card));
1561                 goto out;
1562         }
1563         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1564         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1565                 PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
1566                            "function level mismatch "
1567                            "(sent: 0x%x, received: 0x%x)\n",
1568                            CARD_WDEV_ID(card), card->info.func_level, temp);
1569                 goto out;
1570         }
1571         channel->state = CH_STATE_UP;
1572 out:
1573         qeth_release_buffer(channel, iob);
1574 }
1575
1576 static void qeth_idx_read_cb(struct qeth_channel *channel,
1577                 struct qeth_cmd_buffer *iob)
1578 {
1579         struct qeth_card *card;
1580         __u16 temp;
1581
1582         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1583         if (channel->state == CH_STATE_DOWN) {
1584                 channel->state = CH_STATE_ACTIVATING;
1585                 goto out;
1586         }
1587
1588         card = CARD_FROM_CDEV(channel->ccwdev);
1589         if (qeth_check_idx_response(iob->data))
1590                         goto out;
1591
1592         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1593                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1594                         PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
1595                                 "adapter exclusively used by another host\n",
1596                                 CARD_RDEV_ID(card));
1597                 else
1598                         PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
1599                                 "negative reply\n", CARD_RDEV_ID(card));
1600                 goto out;
1601         }
1602
1603 /**
1604  * temporary fix for microcode bug
1605  * to revert it,replace OR by AND
1606  */
1607         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1608              (card->info.type == QETH_CARD_TYPE_OSAE))
1609                 card->info.portname_required = 1;
1610
1611         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1612         if (temp != qeth_peer_func_level(card->info.func_level)) {
1613                 PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
1614                            "level mismatch (sent: 0x%x, received: 0x%x)\n",
1615                            CARD_RDEV_ID(card), card->info.func_level, temp);
1616                 goto out;
1617         }
1618         memcpy(&card->token.issuer_rm_r,
1619                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1620                QETH_MPC_TOKEN_LENGTH);
1621         memcpy(&card->info.mcl_level[0],
1622                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1623         channel->state = CH_STATE_UP;
1624 out:
1625         qeth_release_buffer(channel, iob);
1626 }
1627
1628 void qeth_prepare_control_data(struct qeth_card *card, int len,
1629                 struct qeth_cmd_buffer *iob)
1630 {
1631         qeth_setup_ccw(&card->write, iob->data, len);
1632         iob->callback = qeth_release_buffer;
1633
1634         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1635                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1636         card->seqno.trans_hdr++;
1637         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1638                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1639         card->seqno.pdu_hdr++;
1640         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1641                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1642         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1643 }
1644 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1645
1646 int qeth_send_control_data(struct qeth_card *card, int len,
1647                 struct qeth_cmd_buffer *iob,
1648                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1649                         unsigned long),
1650                 void *reply_param)
1651 {
1652         int rc;
1653         unsigned long flags;
1654         struct qeth_reply *reply = NULL;
1655         unsigned long timeout;
1656
1657         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1658
1659         reply = qeth_alloc_reply(card);
1660         if (!reply) {
1661                 PRINT_WARN("Could not alloc qeth_reply!\n");
1662                 return -ENOMEM;
1663         }
1664         reply->callback = reply_cb;
1665         reply->param = reply_param;
1666         if (card->state == CARD_STATE_DOWN)
1667                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1668         else
1669                 reply->seqno = card->seqno.ipa++;
1670         init_waitqueue_head(&reply->wait_q);
1671         spin_lock_irqsave(&card->lock, flags);
1672         list_add_tail(&reply->list, &card->cmd_waiter_list);
1673         spin_unlock_irqrestore(&card->lock, flags);
1674         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1675
1676         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1677         qeth_prepare_control_data(card, len, iob);
1678
1679         if (IS_IPA(iob->data))
1680                 timeout = jiffies + QETH_IPA_TIMEOUT;
1681         else
1682                 timeout = jiffies + QETH_TIMEOUT;
1683
1684         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1685         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1686         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1687                               (addr_t) iob, 0, 0);
1688         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1689         if (rc) {
1690                 PRINT_WARN("qeth_send_control_data: "
1691                            "ccw_device_start rc = %i\n", rc);
1692                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1693                 spin_lock_irqsave(&card->lock, flags);
1694                 list_del_init(&reply->list);
1695                 qeth_put_reply(reply);
1696                 spin_unlock_irqrestore(&card->lock, flags);
1697                 qeth_release_buffer(iob->channel, iob);
1698                 atomic_set(&card->write.irq_pending, 0);
1699                 wake_up(&card->wait_q);
1700                 return rc;
1701         }
1702         while (!atomic_read(&reply->received)) {
1703                 if (time_after(jiffies, timeout)) {
1704                         spin_lock_irqsave(&reply->card->lock, flags);
1705                         list_del_init(&reply->list);
1706                         spin_unlock_irqrestore(&reply->card->lock, flags);
1707                         reply->rc = -ETIME;
1708                         atomic_inc(&reply->received);
1709                         wake_up(&reply->wait_q);
1710                 }
1711                 cpu_relax();
1712         };
1713         rc = reply->rc;
1714         qeth_put_reply(reply);
1715         return rc;
1716 }
1717 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1718
1719 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1720                 unsigned long data)
1721 {
1722         struct qeth_cmd_buffer *iob;
1723
1724         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1725
1726         iob = (struct qeth_cmd_buffer *) data;
1727         memcpy(&card->token.cm_filter_r,
1728                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1729                QETH_MPC_TOKEN_LENGTH);
1730         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1731         return 0;
1732 }
1733
1734 static int qeth_cm_enable(struct qeth_card *card)
1735 {
1736         int rc;
1737         struct qeth_cmd_buffer *iob;
1738
1739         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1740
1741         iob = qeth_wait_for_buffer(&card->write);
1742         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1743         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1744                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1745         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1746                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1747
1748         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1749                                     qeth_cm_enable_cb, NULL);
1750         return rc;
1751 }
1752
1753 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1754                 unsigned long data)
1755 {
1756
1757         struct qeth_cmd_buffer *iob;
1758
1759         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1760
1761         iob = (struct qeth_cmd_buffer *) data;
1762         memcpy(&card->token.cm_connection_r,
1763                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1764                QETH_MPC_TOKEN_LENGTH);
1765         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1766         return 0;
1767 }
1768
1769 static int qeth_cm_setup(struct qeth_card *card)
1770 {
1771         int rc;
1772         struct qeth_cmd_buffer *iob;
1773
1774         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1775
1776         iob = qeth_wait_for_buffer(&card->write);
1777         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1778         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1779                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1780         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1781                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1782         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1783                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1784         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1785                                     qeth_cm_setup_cb, NULL);
1786         return rc;
1787
1788 }
1789
1790 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1791 {
1792         switch (card->info.type) {
1793         case QETH_CARD_TYPE_UNKNOWN:
1794                 return 1500;
1795         case QETH_CARD_TYPE_IQD:
1796                 return card->info.max_mtu;
1797         case QETH_CARD_TYPE_OSAE:
1798                 switch (card->info.link_type) {
1799                 case QETH_LINK_TYPE_HSTR:
1800                 case QETH_LINK_TYPE_LANE_TR:
1801                         return 2000;
1802                 default:
1803                         return 1492;
1804                 }
1805         default:
1806                 return 1500;
1807         }
1808 }
1809
1810 static inline int qeth_get_max_mtu_for_card(int cardtype)
1811 {
1812         switch (cardtype) {
1813
1814         case QETH_CARD_TYPE_UNKNOWN:
1815         case QETH_CARD_TYPE_OSAE:
1816         case QETH_CARD_TYPE_OSN:
1817                 return 61440;
1818         case QETH_CARD_TYPE_IQD:
1819                 return 57344;
1820         default:
1821                 return 1500;
1822         }
1823 }
1824
1825 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1826 {
1827         switch (cardtype) {
1828         case QETH_CARD_TYPE_IQD:
1829                 return 1;
1830         default:
1831                 return 0;
1832         }
1833 }
1834
1835 static inline int qeth_get_mtu_outof_framesize(int framesize)
1836 {
1837         switch (framesize) {
1838         case 0x4000:
1839                 return 8192;
1840         case 0x6000:
1841                 return 16384;
1842         case 0xa000:
1843                 return 32768;
1844         case 0xffff:
1845                 return 57344;
1846         default:
1847                 return 0;
1848         }
1849 }
1850
1851 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1852 {
1853         switch (card->info.type) {
1854         case QETH_CARD_TYPE_OSAE:
1855                 return ((mtu >= 576) && (mtu <= 61440));
1856         case QETH_CARD_TYPE_IQD:
1857                 return ((mtu >= 576) &&
1858                         (mtu <= card->info.max_mtu + 4096 - 32));
1859         case QETH_CARD_TYPE_OSN:
1860         case QETH_CARD_TYPE_UNKNOWN:
1861         default:
1862                 return 1;
1863         }
1864 }
1865
1866 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1867                 unsigned long data)
1868 {
1869
1870         __u16 mtu, framesize;
1871         __u16 len;
1872         __u8 link_type;
1873         struct qeth_cmd_buffer *iob;
1874
1875         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1876
1877         iob = (struct qeth_cmd_buffer *) data;
1878         memcpy(&card->token.ulp_filter_r,
1879                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1880                QETH_MPC_TOKEN_LENGTH);
1881         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1882                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1883                 mtu = qeth_get_mtu_outof_framesize(framesize);
1884                 if (!mtu) {
1885                         iob->rc = -EINVAL;
1886                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1887                         return 0;
1888                 }
1889                 card->info.max_mtu = mtu;
1890                 card->info.initial_mtu = mtu;
1891                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1892         } else {
1893                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1894                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1895                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1896         }
1897
1898         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1899         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1900                 memcpy(&link_type,
1901                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1902                 card->info.link_type = link_type;
1903         } else
1904                 card->info.link_type = 0;
1905         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1906         return 0;
1907 }
1908
1909 static int qeth_ulp_enable(struct qeth_card *card)
1910 {
1911         int rc;
1912         char prot_type;
1913         struct qeth_cmd_buffer *iob;
1914
1915         /*FIXME: trace view callbacks*/
1916         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1917
1918         iob = qeth_wait_for_buffer(&card->write);
1919         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1920
1921         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1922                 (__u8) card->info.portno;
1923         if (card->options.layer2)
1924                 if (card->info.type == QETH_CARD_TYPE_OSN)
1925                         prot_type = QETH_PROT_OSN2;
1926                 else
1927                         prot_type = QETH_PROT_LAYER2;
1928         else
1929                 prot_type = QETH_PROT_TCPIP;
1930
1931         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1932         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1933                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1934         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1935                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1936         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1937                card->info.portname, 9);
1938         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1939                                     qeth_ulp_enable_cb, NULL);
1940         return rc;
1941
1942 }
1943
1944 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1945                 unsigned long data)
1946 {
1947         struct qeth_cmd_buffer *iob;
1948
1949         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1950
1951         iob = (struct qeth_cmd_buffer *) data;
1952         memcpy(&card->token.ulp_connection_r,
1953                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1954                QETH_MPC_TOKEN_LENGTH);
1955         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1956         return 0;
1957 }
1958
1959 static int qeth_ulp_setup(struct qeth_card *card)
1960 {
1961         int rc;
1962         __u16 temp;
1963         struct qeth_cmd_buffer *iob;
1964         struct ccw_dev_id dev_id;
1965
1966         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
1967
1968         iob = qeth_wait_for_buffer(&card->write);
1969         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
1970
1971         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
1972                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1973         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
1974                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
1975         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
1976                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
1977
1978         ccw_device_get_id(CARD_DDEV(card), &dev_id);
1979         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
1980         temp = (card->info.cula << 8) + card->info.unit_addr2;
1981         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
1982         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
1983                                     qeth_ulp_setup_cb, NULL);
1984         return rc;
1985 }
1986
1987 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
1988 {
1989         int i, j;
1990
1991         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
1992
1993         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
1994                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
1995                 return 0;
1996
1997         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
1998                                   GFP_KERNEL);
1999         if (!card->qdio.in_q)
2000                 goto out_nomem;
2001         QETH_DBF_TEXT(SETUP, 2, "inq");
2002         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2003         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2004         /* give inbound qeth_qdio_buffers their qdio_buffers */
2005         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2006                 card->qdio.in_q->bufs[i].buffer =
2007                         &card->qdio.in_q->qdio_bufs[i];
2008         /* inbound buffer pool */
2009         if (qeth_alloc_buffer_pool(card))
2010                 goto out_freeinq;
2011         /* outbound */
2012         card->qdio.out_qs =
2013                 kmalloc(card->qdio.no_out_queues *
2014                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2015         if (!card->qdio.out_qs)
2016                 goto out_freepool;
2017         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2018                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2019                                                GFP_KERNEL);
2020                 if (!card->qdio.out_qs[i])
2021                         goto out_freeoutq;
2022                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2023                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2024                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2025                 card->qdio.out_qs[i]->queue_no = i;
2026                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2027                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2028                         card->qdio.out_qs[i]->bufs[j].buffer =
2029                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2030                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2031                                             skb_list);
2032                         lockdep_set_class(
2033                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2034                                 &qdio_out_skb_queue_key);
2035                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2036                 }
2037         }
2038         return 0;
2039
2040 out_freeoutq:
2041         while (i > 0)
2042                 kfree(card->qdio.out_qs[--i]);
2043         kfree(card->qdio.out_qs);
2044         card->qdio.out_qs = NULL;
2045 out_freepool:
2046         qeth_free_buffer_pool(card);
2047 out_freeinq:
2048         kfree(card->qdio.in_q);
2049         card->qdio.in_q = NULL;
2050 out_nomem:
2051         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2052         return -ENOMEM;
2053 }
2054
2055 static void qeth_create_qib_param_field(struct qeth_card *card,
2056                 char *param_field)
2057 {
2058
2059         param_field[0] = _ascebc['P'];
2060         param_field[1] = _ascebc['C'];
2061         param_field[2] = _ascebc['I'];
2062         param_field[3] = _ascebc['T'];
2063         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2064         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2065         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2066 }
2067
2068 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2069                 char *param_field)
2070 {
2071         param_field[16] = _ascebc['B'];
2072         param_field[17] = _ascebc['L'];
2073         param_field[18] = _ascebc['K'];
2074         param_field[19] = _ascebc['T'];
2075         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2076         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2077         *((unsigned int *) (&param_field[28])) =
2078                 card->info.blkt.inter_packet_jumbo;
2079 }
2080
2081 static int qeth_qdio_activate(struct qeth_card *card)
2082 {
2083         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2084         return qdio_activate(CARD_DDEV(card), 0);
2085 }
2086
2087 static int qeth_dm_act(struct qeth_card *card)
2088 {
2089         int rc;
2090         struct qeth_cmd_buffer *iob;
2091
2092         QETH_DBF_TEXT(SETUP, 2, "dmact");
2093
2094         iob = qeth_wait_for_buffer(&card->write);
2095         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2096
2097         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2098                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2099         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2100                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2101         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2102         return rc;
2103 }
2104
2105 static int qeth_mpc_initialize(struct qeth_card *card)
2106 {
2107         int rc;
2108
2109         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2110
2111         rc = qeth_issue_next_read(card);
2112         if (rc) {
2113                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2114                 return rc;
2115         }
2116         rc = qeth_cm_enable(card);
2117         if (rc) {
2118                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2119                 goto out_qdio;
2120         }
2121         rc = qeth_cm_setup(card);
2122         if (rc) {
2123                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2124                 goto out_qdio;
2125         }
2126         rc = qeth_ulp_enable(card);
2127         if (rc) {
2128                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2129                 goto out_qdio;
2130         }
2131         rc = qeth_ulp_setup(card);
2132         if (rc) {
2133                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2134                 goto out_qdio;
2135         }
2136         rc = qeth_alloc_qdio_buffers(card);
2137         if (rc) {
2138                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2139                 goto out_qdio;
2140         }
2141         rc = qeth_qdio_establish(card);
2142         if (rc) {
2143                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2144                 qeth_free_qdio_buffers(card);
2145                 goto out_qdio;
2146         }
2147         rc = qeth_qdio_activate(card);
2148         if (rc) {
2149                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2150                 goto out_qdio;
2151         }
2152         rc = qeth_dm_act(card);
2153         if (rc) {
2154                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2155                 goto out_qdio;
2156         }
2157
2158         return 0;
2159 out_qdio:
2160         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2161         return rc;
2162 }
2163
2164 static void qeth_print_status_with_portname(struct qeth_card *card)
2165 {
2166         char dbf_text[15];
2167         int i;
2168
2169         sprintf(dbf_text, "%s", card->info.portname + 1);
2170         for (i = 0; i < 8; i++)
2171                 dbf_text[i] =
2172                         (char) _ebcasc[(__u8) dbf_text[i]];
2173         dbf_text[8] = 0;
2174         PRINT_INFO("Device %s/%s/%s is a%s card%s%s%s\n"
2175                "with link type %s (portname: %s)\n",
2176                CARD_RDEV_ID(card),
2177                CARD_WDEV_ID(card),
2178                CARD_DDEV_ID(card),
2179                qeth_get_cardname(card),
2180                (card->info.mcl_level[0]) ? " (level: " : "",
2181                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2182                (card->info.mcl_level[0]) ? ")" : "",
2183                qeth_get_cardname_short(card),
2184                dbf_text);
2185
2186 }
2187
2188 static void qeth_print_status_no_portname(struct qeth_card *card)
2189 {
2190         if (card->info.portname[0])
2191                 PRINT_INFO("Device %s/%s/%s is a%s "
2192                        "card%s%s%s\nwith link type %s "
2193                        "(no portname needed by interface).\n",
2194                        CARD_RDEV_ID(card),
2195                        CARD_WDEV_ID(card),
2196                        CARD_DDEV_ID(card),
2197                        qeth_get_cardname(card),
2198                        (card->info.mcl_level[0]) ? " (level: " : "",
2199                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2200                        (card->info.mcl_level[0]) ? ")" : "",
2201                        qeth_get_cardname_short(card));
2202         else
2203                 PRINT_INFO("Device %s/%s/%s is a%s "
2204                        "card%s%s%s\nwith link type %s.\n",
2205                        CARD_RDEV_ID(card),
2206                        CARD_WDEV_ID(card),
2207                        CARD_DDEV_ID(card),
2208                        qeth_get_cardname(card),
2209                        (card->info.mcl_level[0]) ? " (level: " : "",
2210                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2211                        (card->info.mcl_level[0]) ? ")" : "",
2212                        qeth_get_cardname_short(card));
2213 }
2214
2215 void qeth_print_status_message(struct qeth_card *card)
2216 {
2217         switch (card->info.type) {
2218         case QETH_CARD_TYPE_OSAE:
2219                 /* VM will use a non-zero first character
2220                  * to indicate a HiperSockets like reporting
2221                  * of the level OSA sets the first character to zero
2222                  * */
2223                 if (!card->info.mcl_level[0]) {
2224                         sprintf(card->info.mcl_level, "%02x%02x",
2225                                 card->info.mcl_level[2],
2226                                 card->info.mcl_level[3]);
2227
2228                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2229                         break;
2230                 }
2231                 /* fallthrough */
2232         case QETH_CARD_TYPE_IQD:
2233                 if (card->info.guestlan) {
2234                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2235                                 card->info.mcl_level[0]];
2236                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2237                                 card->info.mcl_level[1]];
2238                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2239                                 card->info.mcl_level[2]];
2240                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2241                                 card->info.mcl_level[3]];
2242                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2243                 }
2244                 break;
2245         default:
2246                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2247         }
2248         if (card->info.portname_required)
2249                 qeth_print_status_with_portname(card);
2250         else
2251                 qeth_print_status_no_portname(card);
2252 }
2253 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2254
2255 void qeth_put_buffer_pool_entry(struct qeth_card *card,
2256                 struct qeth_buffer_pool_entry *entry)
2257 {
2258         QETH_DBF_TEXT(TRACE, 6, "ptbfplen");
2259         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
2260 }
2261 EXPORT_SYMBOL_GPL(qeth_put_buffer_pool_entry);
2262
2263 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2264 {
2265         struct qeth_buffer_pool_entry *entry;
2266
2267         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2268
2269         list_for_each_entry(entry,
2270                             &card->qdio.init_pool.entry_list, init_list) {
2271                 qeth_put_buffer_pool_entry(card, entry);
2272         }
2273 }
2274
2275 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2276                 struct qeth_card *card)
2277 {
2278         struct list_head *plh;
2279         struct qeth_buffer_pool_entry *entry;
2280         int i, free;
2281         struct page *page;
2282
2283         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2284                 return NULL;
2285
2286         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2287                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2288                 free = 1;
2289                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2290                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2291                                 free = 0;
2292                                 break;
2293                         }
2294                 }
2295                 if (free) {
2296                         list_del_init(&entry->list);
2297                         return entry;
2298                 }
2299         }
2300
2301         /* no free buffer in pool so take first one and swap pages */
2302         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2303                         struct qeth_buffer_pool_entry, list);
2304         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2305                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2306                         page = alloc_page(GFP_ATOMIC);
2307                         if (!page) {
2308                                 return NULL;
2309                         } else {
2310                                 free_page((unsigned long)entry->elements[i]);
2311                                 entry->elements[i] = page_address(page);
2312                                 if (card->options.performance_stats)
2313                                         card->perf_stats.sg_alloc_page_rx++;
2314                         }
2315                 }
2316         }
2317         list_del_init(&entry->list);
2318         return entry;
2319 }
2320
2321 static int qeth_init_input_buffer(struct qeth_card *card,
2322                 struct qeth_qdio_buffer *buf)
2323 {
2324         struct qeth_buffer_pool_entry *pool_entry;
2325         int i;
2326
2327         pool_entry = qeth_find_free_buffer_pool_entry(card);
2328         if (!pool_entry)
2329                 return 1;
2330
2331         /*
2332          * since the buffer is accessed only from the input_tasklet
2333          * there shouldn't be a need to synchronize; also, since we use
2334          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2335          * buffers
2336          */
2337         BUG_ON(!pool_entry);
2338
2339         buf->pool_entry = pool_entry;
2340         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2341                 buf->buffer->element[i].length = PAGE_SIZE;
2342                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2343                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2344                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2345                 else
2346                         buf->buffer->element[i].flags = 0;
2347         }
2348         return 0;
2349 }
2350
2351 int qeth_init_qdio_queues(struct qeth_card *card)
2352 {
2353         int i, j;
2354         int rc;
2355
2356         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2357
2358         /* inbound queue */
2359         memset(card->qdio.in_q->qdio_bufs, 0,
2360                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2361         qeth_initialize_working_pool_list(card);
2362         /*give only as many buffers to hardware as we have buffer pool entries*/
2363         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2364                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2365         card->qdio.in_q->next_buf_to_init =
2366                 card->qdio.in_buf_pool.buf_count - 1;
2367         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2368                      card->qdio.in_buf_pool.buf_count - 1, NULL);
2369         if (rc) {
2370                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2371                 return rc;
2372         }
2373         rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
2374         if (rc) {
2375                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2376                 return rc;
2377         }
2378         /* outbound queue */
2379         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2380                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2381                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2382                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2383                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2384                                         &card->qdio.out_qs[i]->bufs[j]);
2385                 }
2386                 card->qdio.out_qs[i]->card = card;
2387                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2388                 card->qdio.out_qs[i]->do_pack = 0;
2389                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2390                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2391                 atomic_set(&card->qdio.out_qs[i]->state,
2392                            QETH_OUT_Q_UNLOCKED);
2393         }
2394         return 0;
2395 }
2396 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2397
2398 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2399 {
2400         switch (link_type) {
2401         case QETH_LINK_TYPE_HSTR:
2402                 return 2;
2403         default:
2404                 return 1;
2405         }
2406 }
2407
2408 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2409                 struct qeth_ipa_cmd *cmd, __u8 command,
2410                 enum qeth_prot_versions prot)
2411 {
2412         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2413         cmd->hdr.command = command;
2414         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2415         cmd->hdr.seqno = card->seqno.ipa;
2416         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2417         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2418         if (card->options.layer2)
2419                 cmd->hdr.prim_version_no = 2;
2420         else
2421                 cmd->hdr.prim_version_no = 1;
2422         cmd->hdr.param_count = 1;
2423         cmd->hdr.prot_version = prot;
2424         cmd->hdr.ipa_supported = 0;
2425         cmd->hdr.ipa_enabled = 0;
2426 }
2427
2428 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2429                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2430 {
2431         struct qeth_cmd_buffer *iob;
2432         struct qeth_ipa_cmd *cmd;
2433
2434         iob = qeth_wait_for_buffer(&card->write);
2435         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2436         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2437
2438         return iob;
2439 }
2440 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2441
2442 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2443                 char prot_type)
2444 {
2445         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2446         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2447         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2448                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2449 }
2450 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2451
2452 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2453                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2454                         unsigned long),
2455                 void *reply_param)
2456 {
2457         int rc;
2458         char prot_type;
2459
2460         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2461
2462         if (card->options.layer2)
2463                 if (card->info.type == QETH_CARD_TYPE_OSN)
2464                         prot_type = QETH_PROT_OSN2;
2465                 else
2466                         prot_type = QETH_PROT_LAYER2;
2467         else
2468                 prot_type = QETH_PROT_TCPIP;
2469         qeth_prepare_ipa_cmd(card, iob, prot_type);
2470         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2471                                                 iob, reply_cb, reply_param);
2472         return rc;
2473 }
2474 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2475
2476 static int qeth_send_startstoplan(struct qeth_card *card,
2477                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2478 {
2479         int rc;
2480         struct qeth_cmd_buffer *iob;
2481
2482         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2483         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2484
2485         return rc;
2486 }
2487
2488 int qeth_send_startlan(struct qeth_card *card)
2489 {
2490         int rc;
2491
2492         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2493
2494         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2495         return rc;
2496 }
2497 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2498
2499 int qeth_send_stoplan(struct qeth_card *card)
2500 {
2501         int rc = 0;
2502
2503         /*
2504          * TODO: according to the IPA format document page 14,
2505          * TCP/IP (we!) never issue a STOPLAN
2506          * is this right ?!?
2507          */
2508         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2509
2510         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2511         return rc;
2512 }
2513 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2514
2515 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2516                 struct qeth_reply *reply, unsigned long data)
2517 {
2518         struct qeth_ipa_cmd *cmd;
2519
2520         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2521
2522         cmd = (struct qeth_ipa_cmd *) data;
2523         if (cmd->hdr.return_code == 0)
2524                 cmd->hdr.return_code =
2525                         cmd->data.setadapterparms.hdr.return_code;
2526         return 0;
2527 }
2528 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2529
2530 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2531                 struct qeth_reply *reply, unsigned long data)
2532 {
2533         struct qeth_ipa_cmd *cmd;
2534
2535         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2536
2537         cmd = (struct qeth_ipa_cmd *) data;
2538         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2539                 card->info.link_type =
2540                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2541         card->options.adp.supported_funcs =
2542                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2543         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2544 }
2545
2546 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2547                 __u32 command, __u32 cmdlen)
2548 {
2549         struct qeth_cmd_buffer *iob;
2550         struct qeth_ipa_cmd *cmd;
2551
2552         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2553                                      QETH_PROT_IPV4);
2554         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2555         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2556         cmd->data.setadapterparms.hdr.command_code = command;
2557         cmd->data.setadapterparms.hdr.used_total = 1;
2558         cmd->data.setadapterparms.hdr.seq_no = 1;
2559
2560         return iob;
2561 }
2562 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2563
2564 int qeth_query_setadapterparms(struct qeth_card *card)
2565 {
2566         int rc;
2567         struct qeth_cmd_buffer *iob;
2568
2569         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2570         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2571                                    sizeof(struct qeth_ipacmd_setadpparms));
2572         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2573         return rc;
2574 }
2575 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2576
2577 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2578                 unsigned int siga_error, const char *dbftext)
2579 {
2580         if (qdio_error || siga_error) {
2581                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2582                 QETH_DBF_TEXT(QERR, 2, dbftext);
2583                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2584                                buf->element[15].flags & 0xff);
2585                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2586                                buf->element[14].flags & 0xff);
2587                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2588                 QETH_DBF_TEXT_(QERR, 2, " serr=%X", siga_error);
2589                 return 1;
2590         }
2591         return 0;
2592 }
2593 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2594
2595 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2596 {
2597         struct qeth_qdio_q *queue = card->qdio.in_q;
2598         int count;
2599         int i;
2600         int rc;
2601         int newcount = 0;
2602
2603         QETH_DBF_TEXT(TRACE, 6, "queinbuf");
2604         count = (index < queue->next_buf_to_init)?
2605                 card->qdio.in_buf_pool.buf_count -
2606                 (queue->next_buf_to_init - index) :
2607                 card->qdio.in_buf_pool.buf_count -
2608                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2609         /* only requeue at a certain threshold to avoid SIGAs */
2610         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2611                 for (i = queue->next_buf_to_init;
2612                      i < queue->next_buf_to_init + count; ++i) {
2613                         if (qeth_init_input_buffer(card,
2614                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2615                                 break;
2616                         } else {
2617                                 newcount++;
2618                         }
2619                 }
2620
2621                 if (newcount < count) {
2622                         /* we are in memory shortage so we switch back to
2623                            traditional skb allocation and drop packages */
2624                         if (!atomic_read(&card->force_alloc_skb) &&
2625                             net_ratelimit())
2626                                 PRINT_WARN("Switch to alloc skb\n");
2627                         atomic_set(&card->force_alloc_skb, 3);
2628                         count = newcount;
2629                 } else {
2630                         if ((atomic_read(&card->force_alloc_skb) == 1) &&
2631                             net_ratelimit())
2632                                 PRINT_WARN("Switch to sg\n");
2633                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2634                 }
2635
2636                 /*
2637                  * according to old code it should be avoided to requeue all
2638                  * 128 buffers in order to benefit from PCI avoidance.
2639                  * this function keeps at least one buffer (the buffer at
2640                  * 'index') un-requeued -> this buffer is the first buffer that
2641                  * will be requeued the next time
2642                  */
2643                 if (card->options.performance_stats) {
2644                         card->perf_stats.inbound_do_qdio_cnt++;
2645                         card->perf_stats.inbound_do_qdio_start_time =
2646                                 qeth_get_micros();
2647                 }
2648                 rc = do_QDIO(CARD_DDEV(card),
2649                              QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
2650                              0, queue->next_buf_to_init, count, NULL);
2651                 if (card->options.performance_stats)
2652                         card->perf_stats.inbound_do_qdio_time +=
2653                                 qeth_get_micros() -
2654                                 card->perf_stats.inbound_do_qdio_start_time;
2655                 if (rc) {
2656                         PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
2657                                    "return %i (device %s).\n",
2658                                    rc, CARD_DDEV_ID(card));
2659                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2660                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2661                 }
2662                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2663                                           QDIO_MAX_BUFFERS_PER_Q;
2664         }
2665 }
2666 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2667
2668 static int qeth_handle_send_error(struct qeth_card *card,
2669                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err,
2670                 unsigned int siga_err)
2671 {
2672         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2673         int cc = siga_err & 3;
2674
2675         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2676         qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
2677         switch (cc) {
2678         case 0:
2679                 if (qdio_err) {
2680                         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2681                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2682                         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2683                                        (u16)qdio_err, (u8)sbalf15);
2684                         return QETH_SEND_ERROR_LINK_FAILURE;
2685                 }
2686                 return QETH_SEND_ERROR_NONE;
2687         case 2:
2688                 if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
2689                         QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
2690                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2691                         return QETH_SEND_ERROR_KICK_IT;
2692                 }
2693                 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2694                         return QETH_SEND_ERROR_RETRY;
2695                 return QETH_SEND_ERROR_LINK_FAILURE;
2696                 /* look at qdio_error and sbalf 15 */
2697         case 1:
2698                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc1");
2699                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2700                 return QETH_SEND_ERROR_LINK_FAILURE;
2701         case 3:
2702         default:
2703                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc3");
2704                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2705                 return QETH_SEND_ERROR_KICK_IT;
2706         }
2707 }
2708
2709 /*
2710  * Switched to packing state if the number of used buffers on a queue
2711  * reaches a certain limit.
2712  */
2713 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2714 {
2715         if (!queue->do_pack) {
2716                 if (atomic_read(&queue->used_buffers)
2717                     >= QETH_HIGH_WATERMARK_PACK){
2718                         /* switch non-PACKING -> PACKING */
2719                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2720                         if (queue->card->options.performance_stats)
2721                                 queue->card->perf_stats.sc_dp_p++;
2722                         queue->do_pack = 1;
2723                 }
2724         }
2725 }
2726
2727 /*
2728  * Switches from packing to non-packing mode. If there is a packing
2729  * buffer on the queue this buffer will be prepared to be flushed.
2730  * In that case 1 is returned to inform the caller. If no buffer
2731  * has to be flushed, zero is returned.
2732  */
2733 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2734 {
2735         struct qeth_qdio_out_buffer *buffer;
2736         int flush_count = 0;
2737
2738         if (queue->do_pack) {
2739                 if (atomic_read(&queue->used_buffers)
2740                     <= QETH_LOW_WATERMARK_PACK) {
2741                         /* switch PACKING -> non-PACKING */
2742                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2743                         if (queue->card->options.performance_stats)
2744                                 queue->card->perf_stats.sc_p_dp++;
2745                         queue->do_pack = 0;
2746                         /* flush packing buffers */
2747                         buffer = &queue->bufs[queue->next_buf_to_fill];
2748                         if ((atomic_read(&buffer->state) ==
2749                                                 QETH_QDIO_BUF_EMPTY) &&
2750                             (buffer->next_element_to_fill > 0)) {
2751                                 atomic_set(&buffer->state,
2752                                                 QETH_QDIO_BUF_PRIMED);
2753                                 flush_count++;
2754                                 queue->next_buf_to_fill =
2755                                         (queue->next_buf_to_fill + 1) %
2756                                         QDIO_MAX_BUFFERS_PER_Q;
2757                         }
2758                 }
2759         }
2760         return flush_count;
2761 }
2762
2763 /*
2764  * Called to flush a packing buffer if no more pci flags are on the queue.
2765  * Checks if there is a packing buffer and prepares it to be flushed.
2766  * In that case returns 1, otherwise zero.
2767  */
2768 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2769 {
2770         struct qeth_qdio_out_buffer *buffer;
2771
2772         buffer = &queue->bufs[queue->next_buf_to_fill];
2773         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2774            (buffer->next_element_to_fill > 0)) {
2775                 /* it's a packing buffer */
2776                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2777                 queue->next_buf_to_fill =
2778                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2779                 return 1;
2780         }
2781         return 0;
2782 }
2783
2784 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
2785                 int index, int count)
2786 {
2787         struct qeth_qdio_out_buffer *buf;
2788         int rc;
2789         int i;
2790         unsigned int qdio_flags;
2791
2792         QETH_DBF_TEXT(TRACE, 6, "flushbuf");
2793
2794         for (i = index; i < index + count; ++i) {
2795                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2796                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2797                                 SBAL_FLAGS_LAST_ENTRY;
2798
2799                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2800                         continue;
2801
2802                 if (!queue->do_pack) {
2803                         if ((atomic_read(&queue->used_buffers) >=
2804                                 (QETH_HIGH_WATERMARK_PACK -
2805                                  QETH_WATERMARK_PACK_FUZZ)) &&
2806                             !atomic_read(&queue->set_pci_flags_count)) {
2807                                 /* it's likely that we'll go to packing
2808                                  * mode soon */
2809                                 atomic_inc(&queue->set_pci_flags_count);
2810                                 buf->buffer->element[0].flags |= 0x40;
2811                         }
2812                 } else {
2813                         if (!atomic_read(&queue->set_pci_flags_count)) {
2814                                 /*
2815                                  * there's no outstanding PCI any more, so we
2816                                  * have to request a PCI to be sure the the PCI
2817                                  * will wake at some time in the future then we
2818                                  * can flush packed buffers that might still be
2819                                  * hanging around, which can happen if no
2820                                  * further send was requested by the stack
2821                                  */
2822                                 atomic_inc(&queue->set_pci_flags_count);
2823                                 buf->buffer->element[0].flags |= 0x40;
2824                         }
2825                 }
2826         }
2827
2828         queue->card->dev->trans_start = jiffies;
2829         if (queue->card->options.performance_stats) {
2830                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2831                 queue->card->perf_stats.outbound_do_qdio_start_time =
2832                         qeth_get_micros();
2833         }
2834         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2835         if (under_int)
2836                 qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
2837         if (atomic_read(&queue->set_pci_flags_count))
2838                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2839         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2840                      queue->queue_no, index, count, NULL);
2841         if (queue->card->options.performance_stats)
2842                 queue->card->perf_stats.outbound_do_qdio_time +=
2843                         qeth_get_micros() -
2844                         queue->card->perf_stats.outbound_do_qdio_start_time;
2845         if (rc) {
2846                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2847                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2848                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2849                 queue->card->stats.tx_errors += count;
2850                 /* this must not happen under normal circumstances. if it
2851                  * happens something is really wrong -> recover */
2852                 qeth_schedule_recovery(queue->card);
2853                 return;
2854         }
2855         atomic_add(count, &queue->used_buffers);
2856         if (queue->card->options.performance_stats)
2857                 queue->card->perf_stats.bufs_sent += count;
2858 }
2859
2860 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2861 {
2862         int index;
2863         int flush_cnt = 0;
2864         int q_was_packing = 0;
2865
2866         /*
2867          * check if weed have to switch to non-packing mode or if
2868          * we have to get a pci flag out on the queue
2869          */
2870         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2871             !atomic_read(&queue->set_pci_flags_count)) {
2872                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2873                                 QETH_OUT_Q_UNLOCKED) {
2874                         /*
2875                          * If we get in here, there was no action in
2876                          * do_send_packet. So, we check if there is a
2877                          * packing buffer to be flushed here.
2878                          */
2879                         netif_stop_queue(queue->card->dev);
2880                         index = queue->next_buf_to_fill;
2881                         q_was_packing = queue->do_pack;
2882                         /* queue->do_pack may change */
2883                         barrier();
2884                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2885                         if (!flush_cnt &&
2886                             !atomic_read(&queue->set_pci_flags_count))
2887                                 flush_cnt +=
2888                                         qeth_flush_buffers_on_no_pci(queue);
2889                         if (queue->card->options.performance_stats &&
2890                             q_was_packing)
2891                                 queue->card->perf_stats.bufs_sent_pack +=
2892                                         flush_cnt;
2893                         if (flush_cnt)
2894                                 qeth_flush_buffers(queue, 1, index, flush_cnt);
2895                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2896                 }
2897         }
2898 }
2899
2900 void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
2901                 unsigned int qdio_error, unsigned int siga_error,
2902                 unsigned int __queue, int first_element, int count,
2903                 unsigned long card_ptr)
2904 {
2905         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2906         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2907         struct qeth_qdio_out_buffer *buffer;
2908         int i;
2909
2910         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2911         if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
2912                 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
2913                         QETH_DBF_TEXT(TRACE, 2, "achkcond");
2914                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2915                         QETH_DBF_TEXT_(TRACE, 2, "%08x", status);
2916                         netif_stop_queue(card->dev);
2917                         qeth_schedule_recovery(card);
2918                         return;
2919                 }
2920         }
2921         if (card->options.performance_stats) {
2922                 card->perf_stats.outbound_handler_cnt++;
2923                 card->perf_stats.outbound_handler_start_time =
2924                         qeth_get_micros();
2925         }
2926         for (i = first_element; i < (first_element + count); ++i) {
2927                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2928                 /*we only handle the KICK_IT error by doing a recovery */
2929                 if (qeth_handle_send_error(card, buffer,
2930                                            qdio_error, siga_error)
2931                                 == QETH_SEND_ERROR_KICK_IT){
2932                         netif_stop_queue(card->dev);
2933                         qeth_schedule_recovery(card);
2934                         return;
2935                 }
2936                 qeth_clear_output_buffer(queue, buffer);
2937         }
2938         atomic_sub(count, &queue->used_buffers);
2939         /* check if we need to do something on this outbound queue */
2940         if (card->info.type != QETH_CARD_TYPE_IQD)
2941                 qeth_check_outbound_queue(queue);
2942
2943         netif_wake_queue(queue->card->dev);
2944         if (card->options.performance_stats)
2945                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2946                         card->perf_stats.outbound_handler_start_time;
2947 }
2948 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2949
2950 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2951 {
2952         int cast_type = RTN_UNSPEC;
2953
2954         if (card->info.type == QETH_CARD_TYPE_OSN)
2955                 return cast_type;
2956
2957         if (skb->dst && skb->dst->neighbour) {
2958                 cast_type = skb->dst->neighbour->type;
2959                 if ((cast_type == RTN_BROADCAST) ||
2960                     (cast_type == RTN_MULTICAST) ||
2961                     (cast_type == RTN_ANYCAST))
2962                         return cast_type;
2963                 else
2964                         return RTN_UNSPEC;
2965         }
2966         /* try something else */
2967         if (skb->protocol == ETH_P_IPV6)
2968                 return (skb_network_header(skb)[24] == 0xff) ?
2969                                 RTN_MULTICAST : 0;
2970         else if (skb->protocol == ETH_P_IP)
2971                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2972                                 RTN_MULTICAST : 0;
2973         /* ... */
2974         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2975                 return RTN_BROADCAST;
2976         else {
2977                 u16 hdr_mac;
2978
2979                 hdr_mac = *((u16 *)skb->data);
2980                 /* tr multicast? */
2981                 switch (card->info.link_type) {
2982                 case QETH_LINK_TYPE_HSTR:
2983                 case QETH_LINK_TYPE_LANE_TR:
2984                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2985                             (hdr_mac == QETH_TR_MAC_C))
2986                                 return RTN_MULTICAST;
2987                         break;
2988                 /* eth or so multicast? */
2989                 default:
2990                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2991                             (hdr_mac == QETH_ETH_MAC_V6))
2992                                 return RTN_MULTICAST;
2993                 }
2994         }
2995         return cast_type;
2996 }
2997 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
2998
2999 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3000                         int ipv, int cast_type)
3001 {
3002         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
3003                 return card->qdio.default_out_queue;
3004         switch (card->qdio.no_out_queues) {
3005         case 4:
3006                 if (cast_type && card->info.is_multicast_different)
3007                         return card->info.is_multicast_different &
3008                                 (card->qdio.no_out_queues - 1);
3009                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3010                         const u8 tos = ip_hdr(skb)->tos;
3011
3012                         if (card->qdio.do_prio_queueing ==
3013                                 QETH_PRIO_Q_ING_TOS) {
3014                                 if (tos & IP_TOS_NOTIMPORTANT)
3015                                         return 3;
3016                                 if (tos & IP_TOS_HIGHRELIABILITY)
3017                                         return 2;
3018                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3019                                         return 1;
3020                                 if (tos & IP_TOS_LOWDELAY)
3021                                         return 0;
3022                         }
3023                         if (card->qdio.do_prio_queueing ==
3024                                 QETH_PRIO_Q_ING_PREC)
3025                                 return 3 - (tos >> 6);
3026                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3027                         /* TODO: IPv6!!! */
3028                 }
3029                 return card->qdio.default_out_queue;
3030         case 1: /* fallthrough for single-out-queue 1920-device */
3031         default:
3032                 return card->qdio.default_out_queue;
3033         }
3034 }
3035 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3036
3037 static void __qeth_free_new_skb(struct sk_buff *orig_skb,
3038                 struct sk_buff *new_skb)
3039 {
3040         if (orig_skb != new_skb)
3041                 dev_kfree_skb_any(new_skb);
3042 }
3043
3044 static inline struct sk_buff *qeth_realloc_headroom(struct qeth_card *card,
3045                 struct sk_buff *skb, int size)
3046 {
3047         struct sk_buff *new_skb = skb;
3048
3049         if (skb_headroom(skb) >= size)
3050                 return skb;
3051         new_skb = skb_realloc_headroom(skb, size);
3052         if (!new_skb)
3053                 PRINT_ERR("Could not realloc headroom for qeth_hdr "
3054                           "on interface %s", QETH_CARD_IFNAME(card));
3055         return new_skb;
3056 }
3057
3058 struct sk_buff *qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb,
3059                  struct qeth_hdr **hdr)
3060 {
3061         struct sk_buff *new_skb;
3062
3063         QETH_DBF_TEXT(TRACE, 6, "prepskb");
3064
3065         new_skb = qeth_realloc_headroom(card, skb,
3066                         sizeof(struct qeth_hdr));
3067         if (!new_skb)
3068                 return NULL;
3069
3070         *hdr = ((struct qeth_hdr *)qeth_push_skb(card, new_skb,
3071                         sizeof(struct qeth_hdr)));
3072         if (*hdr == NULL) {
3073                 __qeth_free_new_skb(skb, new_skb);
3074                 return NULL;
3075         }
3076         return new_skb;
3077 }
3078 EXPORT_SYMBOL_GPL(qeth_prepare_skb);
3079
3080 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3081                      struct sk_buff *skb, int elems)
3082 {
3083         int elements_needed = 0;
3084
3085         if (skb_shinfo(skb)->nr_frags > 0)
3086                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3087         if (elements_needed == 0)
3088                 elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
3089                         + skb->len) >> PAGE_SHIFT);
3090         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3091                 PRINT_ERR("Invalid size of IP packet "
3092                         "(Number=%d / Length=%d). Discarded.\n",
3093                         (elements_needed+elems), skb->len);
3094                 return 0;
3095         }
3096         return elements_needed;
3097 }
3098 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3099
3100 static void __qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
3101                 int is_tso, int *next_element_to_fill)
3102 {
3103         int length = skb->len;
3104         int length_here;
3105         int element;
3106         char *data;
3107         int first_lap ;
3108
3109         element = *next_element_to_fill;
3110         data = skb->data;
3111         first_lap = (is_tso == 0 ? 1 : 0);
3112
3113         while (length > 0) {
3114                 /* length_here is the remaining amount of data in this page */
3115                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3116                 if (length < length_here)
3117                         length_here = length;
3118
3119                 buffer->element[element].addr = data;
3120                 buffer->element[element].length = length_here;
3121                 length -= length_here;
3122                 if (!length) {
3123                         if (first_lap)
3124                                 buffer->element[element].flags = 0;
3125                         else
3126                                 buffer->element[element].flags =
3127                                     SBAL_FLAGS_LAST_FRAG;
3128                 } else {
3129                         if (first_lap)
3130                                 buffer->element[element].flags =
3131                                     SBAL_FLAGS_FIRST_FRAG;
3132                         else
3133                                 buffer->element[element].flags =
3134                                     SBAL_FLAGS_MIDDLE_FRAG;
3135                 }
3136                 data += length_here;
3137                 element++;
3138                 first_lap = 0;
3139         }
3140         *next_element_to_fill = element;
3141 }
3142
3143 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3144                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb)
3145 {
3146         struct qdio_buffer *buffer;
3147         struct qeth_hdr_tso *hdr;
3148         int flush_cnt = 0, hdr_len, large_send = 0;
3149
3150         QETH_DBF_TEXT(TRACE, 6, "qdfillbf");
3151
3152         buffer = buf->buffer;
3153         atomic_inc(&skb->users);
3154         skb_queue_tail(&buf->skb_list, skb);
3155
3156         hdr  = (struct qeth_hdr_tso *) skb->data;
3157         /*check first on TSO ....*/
3158         if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3159                 int element = buf->next_element_to_fill;
3160
3161                 hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
3162                 /*fill first buffer entry only with header information */
3163                 buffer->element[element].addr = skb->data;
3164                 buffer->element[element].length = hdr_len;
3165                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3166                 buf->next_element_to_fill++;
3167                 skb->data += hdr_len;
3168                 skb->len  -= hdr_len;
3169                 large_send = 1;
3170         }
3171         if (skb_shinfo(skb)->nr_frags == 0)
3172                 __qeth_fill_buffer(skb, buffer, large_send,
3173                                    (int *)&buf->next_element_to_fill);
3174         else
3175                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3176                                         (int *)&buf->next_element_to_fill);
3177
3178         if (!queue->do_pack) {
3179                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3180                 /* set state to PRIMED -> will be flushed */
3181                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3182                 flush_cnt = 1;
3183         } else {
3184                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3185                 if (queue->card->options.performance_stats)
3186                         queue->card->perf_stats.skbs_sent_pack++;
3187                 if (buf->next_element_to_fill >=
3188                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3189                         /*
3190                          * packed buffer if full -> set state PRIMED
3191                          * -> will be flushed
3192                          */
3193                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3194                         flush_cnt = 1;
3195                 }
3196         }
3197         return flush_cnt;
3198 }
3199
3200 int qeth_do_send_packet_fast(struct qeth_card *card,
3201                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3202                 struct qeth_hdr *hdr, int elements_needed,
3203                 struct qeth_eddp_context *ctx)
3204 {
3205         struct qeth_qdio_out_buffer *buffer;
3206         int buffers_needed = 0;
3207         int flush_cnt = 0;
3208         int index;
3209
3210         QETH_DBF_TEXT(TRACE, 6, "dosndpfa");
3211
3212         /* spin until we get the queue ... */
3213         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3214                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3215         /* ... now we've got the queue */
3216         index = queue->next_buf_to_fill;
3217         buffer = &queue->bufs[queue->next_buf_to_fill];
3218         /*
3219          * check if buffer is empty to make sure that we do not 'overtake'
3220          * ourselves and try to fill a buffer that is already primed
3221          */
3222         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3223                 goto out;
3224         if (ctx == NULL)
3225                 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3226                                           QDIO_MAX_BUFFERS_PER_Q;
3227         else {
3228                 buffers_needed = qeth_eddp_check_buffers_for_context(queue,
3229                                                                         ctx);
3230                 if (buffers_needed < 0)
3231                         goto out;
3232                 queue->next_buf_to_fill =
3233                         (queue->next_buf_to_fill + buffers_needed) %
3234                         QDIO_MAX_BUFFERS_PER_Q;
3235         }
3236         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3237         if (ctx == NULL) {
3238                 qeth_fill_buffer(queue, buffer, skb);
3239                 qeth_flush_buffers(queue, 0, index, 1);
3240         } else {
3241                 flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
3242                 WARN_ON(buffers_needed != flush_cnt);
3243                 qeth_flush_buffers(queue, 0, index, flush_cnt);
3244         }
3245         return 0;
3246 out:
3247         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3248         return -EBUSY;
3249 }
3250 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3251
3252 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3253                 struct sk_buff *skb, struct qeth_hdr *hdr,
3254                 int elements_needed, struct qeth_eddp_context *ctx)
3255 {
3256         struct qeth_qdio_out_buffer *buffer;
3257         int start_index;
3258         int flush_count = 0;
3259         int do_pack = 0;
3260         int tmp;
3261         int rc = 0;
3262
3263         QETH_DBF_TEXT(TRACE, 6, "dosndpkt");
3264
3265         /* spin until we get the queue ... */
3266         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3267                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3268         start_index = queue->next_buf_to_fill;
3269         buffer = &queue->bufs[queue->next_buf_to_fill];
3270         /*
3271          * check if buffer is empty to make sure that we do not 'overtake'
3272          * ourselves and try to fill a buffer that is already primed
3273          */
3274         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3275                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3276                 return -EBUSY;
3277         }
3278         /* check if we need to switch packing state of this queue */
3279         qeth_switch_to_packing_if_needed(queue);
3280         if (queue->do_pack) {
3281                 do_pack = 1;
3282                 if (ctx == NULL) {
3283                         /* does packet fit in current buffer? */
3284                         if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3285                             buffer->next_element_to_fill) < elements_needed) {
3286                                 /* ... no -> set state PRIMED */
3287                                 atomic_set(&buffer->state,
3288                                         QETH_QDIO_BUF_PRIMED);
3289                                 flush_count++;
3290                                 queue->next_buf_to_fill =
3291                                         (queue->next_buf_to_fill + 1) %
3292                                         QDIO_MAX_BUFFERS_PER_Q;
3293                                 buffer = &queue->bufs[queue->next_buf_to_fill];
3294                                 /* we did a step forward, so check buffer state
3295                                  * again */
3296                                 if (atomic_read(&buffer->state) !=
3297                                                 QETH_QDIO_BUF_EMPTY){
3298                                         qeth_flush_buffers(queue, 0,
3299                                                 start_index, flush_count);
3300                                         atomic_set(&queue->state,
3301                                                 QETH_OUT_Q_UNLOCKED);
3302                                         return -EBUSY;
3303                                 }
3304                         }
3305                 } else {
3306                         /* check if we have enough elements (including following
3307                          * free buffers) to handle eddp context */
3308                         if (qeth_eddp_check_buffers_for_context(queue, ctx)
3309                                 < 0) {
3310                                 if (net_ratelimit())
3311                                         PRINT_WARN("eddp tx_dropped 1\n");
3312                                 rc = -EBUSY;
3313                                 goto out;
3314                         }
3315                 }
3316         }
3317         if (ctx == NULL)
3318                 tmp = qeth_fill_buffer(queue, buffer, skb);
3319         else {
3320                 tmp = qeth_eddp_fill_buffer(queue, ctx,
3321                                                 queue->next_buf_to_fill);
3322                 if (tmp < 0) {
3323                         PRINT_ERR("eddp tx_dropped 2\n");
3324                         rc = -EBUSY;
3325                         goto out;
3326                 }
3327         }
3328         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3329                                   QDIO_MAX_BUFFERS_PER_Q;
3330         flush_count += tmp;
3331 out:
3332         if (flush_count)
3333                 qeth_flush_buffers(queue, 0, start_index, flush_count);
3334         else if (!atomic_read(&queue->set_pci_flags_count))
3335                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3336         /*
3337          * queue->state will go from LOCKED -> UNLOCKED or from
3338          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3339          * (switch packing state or flush buffer to get another pci flag out).
3340          * In that case we will enter this loop
3341          */
3342         while (atomic_dec_return(&queue->state)) {
3343                 flush_count = 0;
3344                 start_index = queue->next_buf_to_fill;
3345                 /* check if we can go back to non-packing state */
3346                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3347                 /*
3348                  * check if we need to flush a packing buffer to get a pci
3349                  * flag out on the queue
3350                  */
3351                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3352                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3353                 if (flush_count)
3354                         qeth_flush_buffers(queue, 0, start_index, flush_count);
3355         }
3356         /* at this point the queue is UNLOCKED again */
3357         if (queue->card->options.performance_stats && do_pack)
3358                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3359
3360         return rc;
3361 }
3362 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3363
3364 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3365                 struct qeth_reply *reply, unsigned long data)
3366 {
3367         struct qeth_ipa_cmd *cmd;
3368         struct qeth_ipacmd_setadpparms *setparms;
3369
3370         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3371
3372         cmd = (struct qeth_ipa_cmd *) data;
3373         setparms = &(cmd->data.setadapterparms);
3374
3375         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3376         if (cmd->hdr.return_code) {
3377                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3378                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3379         }
3380         card->info.promisc_mode = setparms->data.mode;
3381         return 0;
3382 }
3383
3384 void qeth_setadp_promisc_mode(struct qeth_card *card)
3385 {
3386         enum qeth_ipa_promisc_modes mode;
3387         struct net_device *dev = card->dev;
3388         struct qeth_cmd_buffer *iob;
3389         struct qeth_ipa_cmd *cmd;
3390
3391         QETH_DBF_TEXT(TRACE, 4, "setprom");
3392
3393         if (((dev->flags & IFF_PROMISC) &&
3394              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3395             (!(dev->flags & IFF_PROMISC) &&
3396              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3397                 return;
3398         mode = SET_PROMISC_MODE_OFF;
3399         if (dev->flags & IFF_PROMISC)
3400                 mode = SET_PROMISC_MODE_ON;
3401         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3402
3403         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3404                         sizeof(struct qeth_ipacmd_setadpparms));
3405         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3406         cmd->data.setadapterparms.data.mode = mode;
3407         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3408 }
3409 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3410
3411 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3412 {
3413         struct qeth_card *card;
3414         char dbf_text[15];
3415
3416         card = netdev_priv(dev);
3417
3418         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3419         sprintf(dbf_text, "%8x", new_mtu);
3420         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3421
3422         if (new_mtu < 64)
3423                 return -EINVAL;
3424         if (new_mtu > 65535)
3425                 return -EINVAL;
3426         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3427             (!qeth_mtu_is_valid(card, new_mtu)))
3428                 return -EINVAL;
3429         dev->mtu = new_mtu;
3430         return 0;
3431 }
3432 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3433
3434 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3435 {
3436         struct qeth_card *card;
3437
3438         card = netdev_priv(dev);
3439
3440         QETH_DBF_TEXT(TRACE, 5, "getstat");
3441
3442         return &card->stats;
3443 }
3444 EXPORT_SYMBOL_GPL(qeth_get_stats);
3445
3446 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3447                 struct qeth_reply *reply, unsigned long data)
3448 {
3449         struct qeth_ipa_cmd *cmd;
3450
3451         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3452
3453         cmd = (struct qeth_ipa_cmd *) data;
3454         if (!card->options.layer2 ||
3455             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3456                 memcpy(card->dev->dev_addr,
3457                        &cmd->data.setadapterparms.data.change_addr.addr,
3458                        OSA_ADDR_LEN);
3459                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3460         }
3461         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3462         return 0;
3463 }
3464
3465 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3466 {
3467         int rc;
3468         struct qeth_cmd_buffer *iob;
3469         struct qeth_ipa_cmd *cmd;
3470
3471         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3472
3473         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3474                                    sizeof(struct qeth_ipacmd_setadpparms));
3475         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3476         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3477         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3478         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3479                card->dev->dev_addr, OSA_ADDR_LEN);
3480         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3481                                NULL);
3482         return rc;
3483 }
3484 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3485
3486 void qeth_tx_timeout(struct net_device *dev)
3487 {
3488         struct qeth_card *card;
3489
3490         card = netdev_priv(dev);
3491         card->stats.tx_errors++;
3492         qeth_schedule_recovery(card);
3493 }
3494 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3495
3496 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3497 {
3498         struct qeth_card *card = netdev_priv(dev);
3499         int rc = 0;
3500
3501         switch (regnum) {
3502         case MII_BMCR: /* Basic mode control register */
3503                 rc = BMCR_FULLDPLX;
3504                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3505                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3506                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3507                         rc |= BMCR_SPEED100;
3508                 break;
3509         case MII_BMSR: /* Basic mode status register */
3510                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3511                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3512                      BMSR_100BASE4;
3513                 break;
3514         case MII_PHYSID1: /* PHYS ID 1 */
3515                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3516                      dev->dev_addr[2];
3517                 rc = (rc >> 5) & 0xFFFF;
3518                 break;
3519         case MII_PHYSID2: /* PHYS ID 2 */
3520                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3521                 break;
3522         case MII_ADVERTISE: /* Advertisement control reg */
3523                 rc = ADVERTISE_ALL;
3524                 break;
3525         case MII_LPA: /* Link partner ability reg */
3526                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3527                      LPA_100BASE4 | LPA_LPACK;
3528                 break;
3529         case MII_EXPANSION: /* Expansion register */
3530                 break;
3531         case MII_DCOUNTER: /* disconnect counter */
3532                 break;
3533         case MII_FCSCOUNTER: /* false carrier counter */
3534                 break;
3535         case MII_NWAYTEST: /* N-way auto-neg test register */
3536                 break;
3537         case MII_RERRCOUNTER: /* rx error counter */
3538                 rc = card->stats.rx_errors;
3539                 break;
3540         case MII_SREVISION: /* silicon revision */
3541                 break;
3542         case MII_RESV1: /* reserved 1 */
3543                 break;
3544         case MII_LBRERROR: /* loopback, rx, bypass error */
3545                 break;
3546         case MII_PHYADDR: /* physical address */
3547                 break;
3548         case MII_RESV2: /* reserved 2 */
3549                 break;
3550         case MII_TPISTATUS: /* TPI status for 10mbps */
3551                 break;
3552         case MII_NCONFIG: /* network interface config */
3553                 break;
3554         default:
3555                 break;
3556         }
3557         return rc;
3558 }
3559 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3560
3561 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3562                 struct qeth_cmd_buffer *iob, int len,
3563                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3564                         unsigned long),
3565                 void *reply_param)
3566 {
3567         u16 s1, s2;
3568
3569         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3570
3571         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3572         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3573                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3574         /* adjust PDU length fields in IPA_PDU_HEADER */
3575         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3576         s2 = (u32) len;
3577         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3578         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3579         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3580         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3581         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3582                                       reply_cb, reply_param);
3583 }
3584
3585 static int qeth_snmp_command_cb(struct qeth_card *card,
3586                 struct qeth_reply *reply, unsigned long sdata)
3587 {
3588         struct qeth_ipa_cmd *cmd;
3589         struct qeth_arp_query_info *qinfo;
3590         struct qeth_snmp_cmd *snmp;
3591         unsigned char *data;
3592         __u16 data_len;
3593
3594         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3595
3596         cmd = (struct qeth_ipa_cmd *) sdata;
3597         data = (unsigned char *)((char *)cmd - reply->offset);
3598         qinfo = (struct qeth_arp_query_info *) reply->param;
3599         snmp = &cmd->data.setadapterparms.data.snmp;
3600
3601         if (cmd->hdr.return_code) {
3602                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3603                 return 0;
3604         }
3605         if (cmd->data.setadapterparms.hdr.return_code) {
3606                 cmd->hdr.return_code =
3607                         cmd->data.setadapterparms.hdr.return_code;
3608                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3609                 return 0;
3610         }
3611         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3612         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3613                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3614         else
3615                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3616
3617         /* check if there is enough room in userspace */
3618         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3619                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3620                 cmd->hdr.return_code = -ENOMEM;
3621                 return 0;
3622         }
3623         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3624                        cmd->data.setadapterparms.hdr.used_total);
3625         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3626                 cmd->data.setadapterparms.hdr.seq_no);
3627         /*copy entries to user buffer*/
3628         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3629                 memcpy(qinfo->udata + qinfo->udata_offset,
3630                        (char *)snmp,
3631                        data_len + offsetof(struct qeth_snmp_cmd, data));
3632                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3633         } else {
3634                 memcpy(qinfo->udata + qinfo->udata_offset,
3635                        (char *)&snmp->request, data_len);
3636         }
3637         qinfo->udata_offset += data_len;
3638         /* check if all replies received ... */
3639                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3640                                cmd->data.setadapterparms.hdr.used_total);
3641                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3642                                cmd->data.setadapterparms.hdr.seq_no);
3643         if (cmd->data.setadapterparms.hdr.seq_no <
3644             cmd->data.setadapterparms.hdr.used_total)
3645                 return 1;
3646         return 0;
3647 }
3648
3649 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3650 {
3651         struct qeth_cmd_buffer *iob;
3652         struct qeth_ipa_cmd *cmd;
3653         struct qeth_snmp_ureq *ureq;
3654         int req_len;
3655         struct qeth_arp_query_info qinfo = {0, };
3656         int rc = 0;
3657
3658         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3659
3660         if (card->info.guestlan)
3661                 return -EOPNOTSUPP;
3662
3663         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3664             (!card->options.layer2)) {
3665                 PRINT_WARN("SNMP Query MIBS not supported "
3666                            "on %s!\n", QETH_CARD_IFNAME(card));
3667                 return -EOPNOTSUPP;
3668         }
3669         /* skip 4 bytes (data_len struct member) to get req_len */
3670         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3671                 return -EFAULT;
3672         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3673         if (!ureq) {
3674                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3675                 return -ENOMEM;
3676         }
3677         if (copy_from_user(ureq, udata,
3678                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3679                 kfree(ureq);
3680                 return -EFAULT;
3681         }
3682         qinfo.udata_len = ureq->hdr.data_len;
3683         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3684         if (!qinfo.udata) {
3685                 kfree(ureq);
3686                 return -ENOMEM;
3687         }
3688         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3689
3690         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3691                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3692         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3693         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3694         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3695                                     qeth_snmp_command_cb, (void *)&qinfo);
3696         if (rc)
3697                 PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
3698                            QETH_CARD_IFNAME(card), rc);
3699         else {
3700                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3701                         rc = -EFAULT;
3702         }
3703
3704         kfree(ureq);
3705         kfree(qinfo.udata);
3706         return rc;
3707 }
3708 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3709
3710 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3711 {
3712         switch (card->info.type) {
3713         case QETH_CARD_TYPE_IQD:
3714                 return 2;
3715         default:
3716                 return 0;
3717         }
3718 }
3719
3720 static int qeth_qdio_establish(struct qeth_card *card)
3721 {
3722         struct qdio_initialize init_data;
3723         char *qib_param_field;
3724         struct qdio_buffer **in_sbal_ptrs;
3725         struct qdio_buffer **out_sbal_ptrs;
3726         int i, j, k;
3727         int rc = 0;
3728
3729         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3730
3731         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3732                               GFP_KERNEL);
3733         if (!qib_param_field)
3734                 return -ENOMEM;
3735
3736         qeth_create_qib_param_field(card, qib_param_field);
3737         qeth_create_qib_param_field_blkt(card, qib_param_field);
3738
3739         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3740                                GFP_KERNEL);
3741         if (!in_sbal_ptrs) {
3742                 kfree(qib_param_field);
3743                 return -ENOMEM;
3744         }
3745         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3746                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3747                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3748
3749         out_sbal_ptrs =
3750                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3751                         sizeof(void *), GFP_KERNEL);
3752         if (!out_sbal_ptrs) {
3753                 kfree(in_sbal_ptrs);
3754                 kfree(qib_param_field);
3755                 return -ENOMEM;
3756         }
3757         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3758                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3759                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3760                                 card->qdio.out_qs[i]->bufs[j].buffer);
3761                 }
3762
3763         memset(&init_data, 0, sizeof(struct qdio_initialize));
3764         init_data.cdev                   = CARD_DDEV(card);
3765         init_data.q_format               = qeth_get_qdio_q_format(card);
3766         init_data.qib_param_field_format = 0;
3767         init_data.qib_param_field        = qib_param_field;
3768         init_data.min_input_threshold    = QETH_MIN_INPUT_THRESHOLD;
3769         init_data.max_input_threshold    = QETH_MAX_INPUT_THRESHOLD;
3770         init_data.min_output_threshold   = QETH_MIN_OUTPUT_THRESHOLD;
3771         init_data.max_output_threshold   = QETH_MAX_OUTPUT_THRESHOLD;
3772         init_data.no_input_qs            = 1;
3773         init_data.no_output_qs           = card->qdio.no_out_queues;
3774         init_data.input_handler          = card->discipline.input_handler;
3775         init_data.output_handler         = card->discipline.output_handler;
3776         init_data.int_parm               = (unsigned long) card;
3777         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3778                                            QDIO_OUTBOUND_0COPY_SBALS |
3779                                            QDIO_USE_OUTBOUND_PCIS;
3780         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3781         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3782
3783         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3784                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3785                 rc = qdio_initialize(&init_data);
3786                 if (rc)
3787                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3788         }
3789         kfree(out_sbal_ptrs);
3790         kfree(in_sbal_ptrs);
3791         kfree(qib_param_field);
3792         return rc;
3793 }
3794
3795 static void qeth_core_free_card(struct qeth_card *card)
3796 {
3797
3798         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3799         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3800         qeth_clean_channel(&card->read);
3801         qeth_clean_channel(&card->write);
3802         if (card->dev)
3803                 free_netdev(card->dev);
3804         kfree(card->ip_tbd_list);
3805         qeth_free_qdio_buffers(card);
3806         kfree(card);
3807 }
3808
3809 static struct ccw_device_id qeth_ids[] = {
3810         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3811         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3812         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3813         {},
3814 };
3815 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3816
3817 static struct ccw_driver qeth_ccw_driver = {
3818         .name = "qeth",
3819         .ids = qeth_ids,
3820         .probe = ccwgroup_probe_ccwdev,
3821         .remove = ccwgroup_remove_ccwdev,
3822 };
3823
3824 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3825                                 unsigned long driver_id)
3826 {
3827         return ccwgroup_create_from_string(root_dev, driver_id,
3828                                            &qeth_ccw_driver, 3, buf);
3829 }
3830
3831 int qeth_core_hardsetup_card(struct qeth_card *card)
3832 {
3833         int retries = 3;
3834         int mpno;
3835         int rc;
3836
3837         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3838         atomic_set(&card->force_alloc_skb, 0);
3839 retry:
3840         if (retries < 3) {
3841                 PRINT_WARN("Retrying to do IDX activates.\n");
3842                 ccw_device_set_offline(CARD_DDEV(card));
3843                 ccw_device_set_offline(CARD_WDEV(card));
3844                 ccw_device_set_offline(CARD_RDEV(card));
3845                 ccw_device_set_online(CARD_RDEV(card));
3846                 ccw_device_set_online(CARD_WDEV(card));
3847                 ccw_device_set_online(CARD_DDEV(card));
3848         }
3849         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3850         if (rc == -ERESTARTSYS) {
3851                 QETH_DBF_TEXT(SETUP, 2, "break1");
3852                 return rc;
3853         } else if (rc) {
3854                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3855                 if (--retries < 0)
3856                         goto out;
3857                 else
3858                         goto retry;
3859         }
3860
3861         rc = qeth_get_unitaddr(card);
3862         if (rc) {
3863                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3864                 return rc;
3865         }
3866
3867         mpno = QETH_MAX_PORTNO;
3868         if (card->info.portno > mpno) {
3869                 PRINT_ERR("Device %s does not offer port number %d \n.",
3870                         CARD_BUS_ID(card), card->info.portno);
3871                 rc = -ENODEV;
3872                 goto out;
3873         }
3874         qeth_init_tokens(card);
3875         qeth_init_func_level(card);
3876         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3877         if (rc == -ERESTARTSYS) {
3878                 QETH_DBF_TEXT(SETUP, 2, "break2");
3879                 return rc;
3880         } else if (rc) {
3881                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3882                 if (--retries < 0)
3883                         goto out;
3884                 else
3885                         goto retry;
3886         }
3887         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3888         if (rc == -ERESTARTSYS) {
3889                 QETH_DBF_TEXT(SETUP, 2, "break3");
3890                 return rc;
3891         } else if (rc) {
3892                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3893                 if (--retries < 0)
3894                         goto out;
3895                 else
3896                         goto retry;
3897         }
3898         rc = qeth_mpc_initialize(card);
3899         if (rc) {
3900                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3901                 goto out;
3902         }
3903         return 0;
3904 out:
3905         PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
3906         return rc;
3907 }
3908 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3909
3910 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3911                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3912 {
3913         struct page *page = virt_to_page(element->addr);
3914         if (*pskb == NULL) {
3915                 /* the upper protocol layers assume that there is data in the
3916                  * skb itself. Copy a small amount (64 bytes) to make them
3917                  * happy. */
3918                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3919                 if (!(*pskb))
3920                         return -ENOMEM;
3921                 skb_reserve(*pskb, ETH_HLEN);
3922                 if (data_len <= 64) {
3923                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3924                                 data_len);
3925                 } else {
3926                         get_page(page);
3927                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3928                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3929                                 data_len - 64);
3930                         (*pskb)->data_len += data_len - 64;
3931                         (*pskb)->len      += data_len - 64;
3932                         (*pskb)->truesize += data_len - 64;
3933                         (*pfrag)++;
3934                 }
3935         } else {
3936                 get_page(page);
3937                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3938                 (*pskb)->data_len += data_len;
3939                 (*pskb)->len      += data_len;
3940                 (*pskb)->truesize += data_len;
3941                 (*pfrag)++;
3942         }
3943         return 0;
3944 }
3945
3946 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3947                 struct qdio_buffer *buffer,
3948                 struct qdio_buffer_element **__element, int *__offset,
3949                 struct qeth_hdr **hdr)
3950 {
3951         struct qdio_buffer_element *element = *__element;
3952         int offset = *__offset;
3953         struct sk_buff *skb = NULL;
3954         int skb_len;
3955         void *data_ptr;
3956         int data_len;
3957         int headroom = 0;
3958         int use_rx_sg = 0;
3959         int frag = 0;
3960
3961         QETH_DBF_TEXT(TRACE, 6, "nextskb");
3962         /* qeth_hdr must not cross element boundaries */
3963         if (element->length < offset + sizeof(struct qeth_hdr)) {
3964                 if (qeth_is_last_sbale(element))
3965                         return NULL;
3966                 element++;
3967                 offset = 0;
3968                 if (element->length < sizeof(struct qeth_hdr))
3969                         return NULL;
3970         }
3971         *hdr = element->addr + offset;
3972
3973         offset += sizeof(struct qeth_hdr);
3974         if (card->options.layer2) {
3975                 if (card->info.type == QETH_CARD_TYPE_OSN) {
3976                         skb_len = (*hdr)->hdr.osn.pdu_length;
3977                         headroom = sizeof(struct qeth_hdr);
3978                 } else {
3979                         skb_len = (*hdr)->hdr.l2.pkt_length;
3980                 }
3981         } else {
3982                 skb_len = (*hdr)->hdr.l3.length;
3983                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3984                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
3985                         headroom = TR_HLEN;
3986                 else
3987                         headroom = ETH_HLEN;
3988         }
3989
3990         if (!skb_len)
3991                 return NULL;
3992
3993         if ((skb_len >= card->options.rx_sg_cb) &&
3994             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
3995             (!atomic_read(&card->force_alloc_skb))) {
3996                 use_rx_sg = 1;
3997         } else {
3998                 skb = dev_alloc_skb(skb_len + headroom);
3999                 if (!skb)
4000                         goto no_mem;
4001                 if (headroom)
4002                         skb_reserve(skb, headroom);
4003         }
4004
4005         data_ptr = element->addr + offset;
4006         while (skb_len) {
4007                 data_len = min(skb_len, (int)(element->length - offset));
4008                 if (data_len) {
4009                         if (use_rx_sg) {
4010                                 if (qeth_create_skb_frag(element, &skb, offset,
4011                                     &frag, data_len))
4012                                         goto no_mem;
4013                         } else {
4014                                 memcpy(skb_put(skb, data_len), data_ptr,
4015                                         data_len);
4016                         }
4017                 }
4018                 skb_len -= data_len;
4019                 if (skb_len) {
4020                         if (qeth_is_last_sbale(element)) {
4021                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4022                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4023                                         CARD_BUS_ID(card));
4024                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4025                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4026                                         CARD_BUS_ID(card));
4027                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4028                                 dev_kfree_skb_any(skb);
4029                                 card->stats.rx_errors++;
4030                                 return NULL;
4031                         }
4032                         element++;
4033                         offset = 0;
4034                         data_ptr = element->addr;
4035                 } else {
4036                         offset += data_len;
4037                 }
4038         }
4039         *__element = element;
4040         *__offset = offset;
4041         if (use_rx_sg && card->options.performance_stats) {
4042                 card->perf_stats.sg_skbs_rx++;
4043                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4044         }
4045         return skb;
4046 no_mem:
4047         if (net_ratelimit()) {
4048                 PRINT_WARN("No memory for packet received on %s.\n",
4049                            QETH_CARD_IFNAME(card));
4050                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4051                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4052         }
4053         card->stats.rx_dropped++;
4054         return NULL;
4055 }
4056 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4057
4058 static void qeth_unregister_dbf_views(void)
4059 {
4060         int x;
4061         for (x = 0; x < QETH_DBF_INFOS; x++) {
4062                 debug_unregister(qeth_dbf[x].id);
4063                 qeth_dbf[x].id = NULL;
4064         }
4065 }
4066
4067 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *text, ...)
4068 {
4069         char dbf_txt_buf[32];
4070
4071         if (level > (qeth_dbf[dbf_nix].id)->level)
4072                 return;
4073         snprintf(dbf_txt_buf, sizeof(dbf_txt_buf), text);
4074         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4075
4076 }
4077 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4078
4079 static int qeth_register_dbf_views(void)
4080 {
4081         int ret;
4082         int x;
4083
4084         for (x = 0; x < QETH_DBF_INFOS; x++) {
4085                 /* register the areas */
4086                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4087                                                 qeth_dbf[x].pages,
4088                                                 qeth_dbf[x].areas,
4089                                                 qeth_dbf[x].len);
4090                 if (qeth_dbf[x].id == NULL) {
4091                         qeth_unregister_dbf_views();
4092                         return -ENOMEM;
4093                 }
4094
4095                 /* register a view */
4096                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4097                 if (ret) {
4098                         qeth_unregister_dbf_views();
4099                         return ret;
4100                 }
4101
4102                 /* set a passing level */
4103                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4104         }
4105
4106         return 0;
4107 }
4108
4109 int qeth_core_load_discipline(struct qeth_card *card,
4110                 enum qeth_discipline_id discipline)
4111 {
4112         int rc = 0;
4113         switch (discipline) {
4114         case QETH_DISCIPLINE_LAYER3:
4115                 card->discipline.ccwgdriver = try_then_request_module(
4116                         symbol_get(qeth_l3_ccwgroup_driver),
4117                         "qeth_l3");
4118                 break;
4119         case QETH_DISCIPLINE_LAYER2:
4120                 card->discipline.ccwgdriver = try_then_request_module(
4121                         symbol_get(qeth_l2_ccwgroup_driver),
4122                         "qeth_l2");
4123                 break;
4124         }
4125         if (!card->discipline.ccwgdriver) {
4126                 PRINT_ERR("Support for discipline %d not present\n",
4127                                 discipline);
4128                 rc = -EINVAL;
4129         }
4130         return rc;
4131 }
4132
4133 void qeth_core_free_discipline(struct qeth_card *card)
4134 {
4135         if (card->options.layer2)
4136                 symbol_put(qeth_l2_ccwgroup_driver);
4137         else
4138                 symbol_put(qeth_l3_ccwgroup_driver);
4139         card->discipline.ccwgdriver = NULL;
4140 }
4141
4142 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4143 {
4144         struct qeth_card *card;
4145         struct device *dev;
4146         int rc;
4147         unsigned long flags;
4148
4149         QETH_DBF_TEXT(SETUP, 2, "probedev");
4150
4151         dev = &gdev->dev;
4152         if (!get_device(dev))
4153                 return -ENODEV;
4154
4155         QETH_DBF_TEXT_(SETUP, 2, "%s", gdev->dev.bus_id);
4156
4157         card = qeth_alloc_card();
4158         if (!card) {
4159                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4160                 rc = -ENOMEM;
4161                 goto err_dev;
4162         }
4163         card->read.ccwdev  = gdev->cdev[0];
4164         card->write.ccwdev = gdev->cdev[1];
4165         card->data.ccwdev  = gdev->cdev[2];
4166         dev_set_drvdata(&gdev->dev, card);
4167         card->gdev = gdev;
4168         gdev->cdev[0]->handler = qeth_irq;
4169         gdev->cdev[1]->handler = qeth_irq;
4170         gdev->cdev[2]->handler = qeth_irq;
4171
4172         rc = qeth_determine_card_type(card);
4173         if (rc) {
4174                 PRINT_WARN("%s: not a valid card type\n", __func__);
4175                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4176                 goto err_card;
4177         }
4178         rc = qeth_setup_card(card);
4179         if (rc) {
4180                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4181                 goto err_card;
4182         }
4183
4184         if (card->info.type == QETH_CARD_TYPE_OSN) {
4185                 rc = qeth_core_create_osn_attributes(dev);
4186                 if (rc)
4187                         goto err_card;
4188                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4189                 if (rc) {
4190                         qeth_core_remove_osn_attributes(dev);
4191                         goto err_card;
4192                 }
4193                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4194                 if (rc) {
4195                         qeth_core_free_discipline(card);
4196                         qeth_core_remove_osn_attributes(dev);
4197                         goto err_card;
4198                 }
4199         } else {
4200                 rc = qeth_core_create_device_attributes(dev);
4201                 if (rc)
4202                         goto err_card;
4203         }
4204
4205         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4206         list_add_tail(&card->list, &qeth_core_card_list.list);
4207         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4208         return 0;
4209
4210 err_card:
4211         qeth_core_free_card(card);
4212 err_dev:
4213         put_device(dev);
4214         return rc;
4215 }
4216
4217 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4218 {
4219         unsigned long flags;
4220         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4221
4222         if (card->discipline.ccwgdriver) {
4223                 card->discipline.ccwgdriver->remove(gdev);
4224                 qeth_core_free_discipline(card);
4225         }
4226
4227         if (card->info.type == QETH_CARD_TYPE_OSN) {
4228                 qeth_core_remove_osn_attributes(&gdev->dev);
4229         } else {
4230                 qeth_core_remove_device_attributes(&gdev->dev);
4231         }
4232         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4233         list_del(&card->list);
4234         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4235         qeth_core_free_card(card);
4236         dev_set_drvdata(&gdev->dev, NULL);
4237         put_device(&gdev->dev);
4238         return;
4239 }
4240
4241 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4242 {
4243         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4244         int rc = 0;
4245         int def_discipline;
4246
4247         if (!card->discipline.ccwgdriver) {
4248                 if (card->info.type == QETH_CARD_TYPE_IQD)
4249                         def_discipline = QETH_DISCIPLINE_LAYER3;
4250                 else
4251                         def_discipline = QETH_DISCIPLINE_LAYER2;
4252                 rc = qeth_core_load_discipline(card, def_discipline);
4253                 if (rc)
4254                         goto err;
4255                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4256                 if (rc)
4257                         goto err;
4258         }
4259         rc = card->discipline.ccwgdriver->set_online(gdev);
4260 err:
4261         return rc;
4262 }
4263
4264 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4265 {
4266         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4267         return card->discipline.ccwgdriver->set_offline(gdev);
4268 }
4269
4270 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4271 {
4272         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4273         if (card->discipline.ccwgdriver &&
4274             card->discipline.ccwgdriver->shutdown)
4275                 card->discipline.ccwgdriver->shutdown(gdev);
4276 }
4277
4278 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4279         .owner = THIS_MODULE,
4280         .name = "qeth",
4281         .driver_id = 0xD8C5E3C8,
4282         .probe = qeth_core_probe_device,
4283         .remove = qeth_core_remove_device,
4284         .set_online = qeth_core_set_online,
4285         .set_offline = qeth_core_set_offline,
4286         .shutdown = qeth_core_shutdown,
4287 };
4288
4289 static ssize_t
4290 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4291                            size_t count)
4292 {
4293         int err;
4294         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4295                                         qeth_core_ccwgroup_driver.driver_id);
4296         if (err)
4297                 return err;
4298         else
4299                 return count;
4300 }
4301
4302 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4303
4304 static struct {
4305         const char str[ETH_GSTRING_LEN];
4306 } qeth_ethtool_stats_keys[] = {
4307 /*  0 */{"rx skbs"},
4308         {"rx buffers"},
4309         {"tx skbs"},
4310         {"tx buffers"},
4311         {"tx skbs no packing"},
4312         {"tx buffers no packing"},
4313         {"tx skbs packing"},
4314         {"tx buffers packing"},
4315         {"tx sg skbs"},
4316         {"tx sg frags"},
4317 /* 10 */{"rx sg skbs"},
4318         {"rx sg frags"},
4319         {"rx sg page allocs"},
4320         {"tx large kbytes"},
4321         {"tx large count"},
4322         {"tx pk state ch n->p"},
4323         {"tx pk state ch p->n"},
4324         {"tx pk watermark low"},
4325         {"tx pk watermark high"},
4326         {"queue 0 buffer usage"},
4327 /* 20 */{"queue 1 buffer usage"},
4328         {"queue 2 buffer usage"},
4329         {"queue 3 buffer usage"},
4330         {"rx handler time"},
4331         {"rx handler count"},
4332         {"rx do_QDIO time"},
4333         {"rx do_QDIO count"},
4334         {"tx handler time"},
4335         {"tx handler count"},
4336         {"tx time"},
4337 /* 30 */{"tx count"},
4338         {"tx do_QDIO time"},
4339         {"tx do_QDIO count"},
4340 };
4341
4342 int qeth_core_get_stats_count(struct net_device *dev)
4343 {
4344         return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4345 }
4346 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4347
4348 void qeth_core_get_ethtool_stats(struct net_device *dev,
4349                 struct ethtool_stats *stats, u64 *data)
4350 {
4351         struct qeth_card *card = netdev_priv(dev);
4352         data[0] = card->stats.rx_packets -
4353                                 card->perf_stats.initial_rx_packets;
4354         data[1] = card->perf_stats.bufs_rec;
4355         data[2] = card->stats.tx_packets -
4356                                 card->perf_stats.initial_tx_packets;
4357         data[3] = card->perf_stats.bufs_sent;
4358         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4359                         - card->perf_stats.skbs_sent_pack;
4360         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4361         data[6] = card->perf_stats.skbs_sent_pack;
4362         data[7] = card->perf_stats.bufs_sent_pack;
4363         data[8] = card->perf_stats.sg_skbs_sent;
4364         data[9] = card->perf_stats.sg_frags_sent;
4365         data[10] = card->perf_stats.sg_skbs_rx;
4366         data[11] = card->perf_stats.sg_frags_rx;
4367         data[12] = card->perf_stats.sg_alloc_page_rx;
4368         data[13] = (card->perf_stats.large_send_bytes >> 10);
4369         data[14] = card->perf_stats.large_send_cnt;
4370         data[15] = card->perf_stats.sc_dp_p;
4371         data[16] = card->perf_stats.sc_p_dp;
4372         data[17] = QETH_LOW_WATERMARK_PACK;
4373         data[18] = QETH_HIGH_WATERMARK_PACK;
4374         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4375         data[20] = (card->qdio.no_out_queues > 1) ?
4376                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4377         data[21] = (card->qdio.no_out_queues > 2) ?
4378                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4379         data[22] = (card->qdio.no_out_queues > 3) ?
4380                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4381         data[23] = card->perf_stats.inbound_time;
4382         data[24] = card->perf_stats.inbound_cnt;
4383         data[25] = card->perf_stats.inbound_do_qdio_time;
4384         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4385         data[27] = card->perf_stats.outbound_handler_time;
4386         data[28] = card->perf_stats.outbound_handler_cnt;
4387         data[29] = card->perf_stats.outbound_time;
4388         data[30] = card->perf_stats.outbound_cnt;
4389         data[31] = card->perf_stats.outbound_do_qdio_time;
4390         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4391 }
4392 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4393
4394 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4395 {
4396         switch (stringset) {
4397         case ETH_SS_STATS:
4398                 memcpy(data, &qeth_ethtool_stats_keys,
4399                         sizeof(qeth_ethtool_stats_keys));
4400                 break;
4401         default:
4402                 WARN_ON(1);
4403                 break;
4404         }
4405 }
4406 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4407
4408 void qeth_core_get_drvinfo(struct net_device *dev,
4409                 struct ethtool_drvinfo *info)
4410 {
4411         struct qeth_card *card = netdev_priv(dev);
4412         if (card->options.layer2)
4413                 strcpy(info->driver, "qeth_l2");
4414         else
4415                 strcpy(info->driver, "qeth_l3");
4416
4417         strcpy(info->version, "1.0");
4418         strcpy(info->fw_version, card->info.mcl_level);
4419         sprintf(info->bus_info, "%s/%s/%s",
4420                         CARD_RDEV_ID(card),
4421                         CARD_WDEV_ID(card),
4422                         CARD_DDEV_ID(card));
4423 }
4424 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4425
4426 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4427                                         struct ethtool_cmd *ecmd)
4428 {
4429         struct qeth_card *card = netdev_priv(netdev);
4430         enum qeth_link_types link_type;
4431
4432         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4433                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4434         else
4435                 link_type = card->info.link_type;
4436
4437         ecmd->transceiver = XCVR_INTERNAL;
4438         ecmd->supported = SUPPORTED_Autoneg;
4439         ecmd->advertising = ADVERTISED_Autoneg;
4440         ecmd->duplex = DUPLEX_FULL;
4441         ecmd->autoneg = AUTONEG_ENABLE;
4442
4443         switch (link_type) {
4444         case QETH_LINK_TYPE_FAST_ETH:
4445         case QETH_LINK_TYPE_LANE_ETH100:
4446                 ecmd->supported |= SUPPORTED_10baseT_Half |
4447                                         SUPPORTED_10baseT_Full |
4448                                         SUPPORTED_100baseT_Half |
4449                                         SUPPORTED_100baseT_Full |
4450                                         SUPPORTED_TP;
4451                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4452                                         ADVERTISED_10baseT_Full |
4453                                         ADVERTISED_100baseT_Half |
4454                                         ADVERTISED_100baseT_Full |
4455                                         ADVERTISED_TP;
4456                 ecmd->speed = SPEED_100;
4457                 ecmd->port = PORT_TP;
4458                 break;
4459
4460         case QETH_LINK_TYPE_GBIT_ETH:
4461         case QETH_LINK_TYPE_LANE_ETH1000:
4462                 ecmd->supported |= SUPPORTED_10baseT_Half |
4463                                         SUPPORTED_10baseT_Full |
4464                                         SUPPORTED_100baseT_Half |
4465                                         SUPPORTED_100baseT_Full |
4466                                         SUPPORTED_1000baseT_Half |
4467                                         SUPPORTED_1000baseT_Full |
4468                                         SUPPORTED_FIBRE;
4469                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4470                                         ADVERTISED_10baseT_Full |
4471                                         ADVERTISED_100baseT_Half |
4472                                         ADVERTISED_100baseT_Full |
4473                                         ADVERTISED_1000baseT_Half |
4474                                         ADVERTISED_1000baseT_Full |
4475                                         ADVERTISED_FIBRE;
4476                 ecmd->speed = SPEED_1000;
4477                 ecmd->port = PORT_FIBRE;
4478                 break;
4479
4480         case QETH_LINK_TYPE_10GBIT_ETH:
4481                 ecmd->supported |= SUPPORTED_10baseT_Half |
4482                                         SUPPORTED_10baseT_Full |
4483                                         SUPPORTED_100baseT_Half |
4484                                         SUPPORTED_100baseT_Full |
4485                                         SUPPORTED_1000baseT_Half |
4486                                         SUPPORTED_1000baseT_Full |
4487                                         SUPPORTED_10000baseT_Full |
4488                                         SUPPORTED_FIBRE;
4489                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4490                                         ADVERTISED_10baseT_Full |
4491                                         ADVERTISED_100baseT_Half |
4492                                         ADVERTISED_100baseT_Full |
4493                                         ADVERTISED_1000baseT_Half |
4494                                         ADVERTISED_1000baseT_Full |
4495                                         ADVERTISED_10000baseT_Full |
4496                                         ADVERTISED_FIBRE;
4497                 ecmd->speed = SPEED_10000;
4498                 ecmd->port = PORT_FIBRE;
4499                 break;
4500
4501         default:
4502                 ecmd->supported |= SUPPORTED_10baseT_Half |
4503                                         SUPPORTED_10baseT_Full |
4504                                         SUPPORTED_TP;
4505                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4506                                         ADVERTISED_10baseT_Full |
4507                                         ADVERTISED_TP;
4508                 ecmd->speed = SPEED_10;
4509                 ecmd->port = PORT_TP;
4510         }
4511
4512         return 0;
4513 }
4514 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4515
4516 static int __init qeth_core_init(void)
4517 {
4518         int rc;
4519
4520         PRINT_INFO("loading core functions\n");
4521         INIT_LIST_HEAD(&qeth_core_card_list.list);
4522         rwlock_init(&qeth_core_card_list.rwlock);
4523
4524         rc = qeth_register_dbf_views();
4525         if (rc)
4526                 goto out_err;
4527         rc = ccw_driver_register(&qeth_ccw_driver);
4528         if (rc)
4529                 goto ccw_err;
4530         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4531         if (rc)
4532                 goto ccwgroup_err;
4533         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4534                                 &driver_attr_group);
4535         if (rc)
4536                 goto driver_err;
4537         qeth_core_root_dev = s390_root_dev_register("qeth");
4538         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4539         if (rc)
4540                 goto register_err;
4541         return 0;
4542
4543 register_err:
4544         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4545                            &driver_attr_group);
4546 driver_err:
4547         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4548 ccwgroup_err:
4549         ccw_driver_unregister(&qeth_ccw_driver);
4550 ccw_err:
4551         qeth_unregister_dbf_views();
4552 out_err:
4553         PRINT_ERR("Initialization failed with code %d\n", rc);
4554         return rc;
4555 }
4556
4557 static void __exit qeth_core_exit(void)
4558 {
4559         s390_root_dev_unregister(qeth_core_root_dev);
4560         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4561                            &driver_attr_group);
4562         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4563         ccw_driver_unregister(&qeth_ccw_driver);
4564         qeth_unregister_dbf_views();
4565         PRINT_INFO("core functions removed\n");
4566 }
4567
4568 module_init(qeth_core_init);
4569 module_exit(qeth_core_exit);
4570 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4571 MODULE_DESCRIPTION("qeth core functions");
4572 MODULE_LICENSE("GPL");