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   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 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/ipv6.h>
  21 #include <linux/tcp.h>
  22 #include <linux/mii.h>
  23 #include <linux/kthread.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/io.h>
  27
  28 #include "qeth_core.h"
  29 #include "qeth_core_offl.h"
  30
  31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  33         /*                   N  P  A    M  L  V                      H  */
  34         [QETH_DBF_SETUP] = {"qeth_setup",
  35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_QERR]  = {"qeth_qerr",
  37                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_TRACE] = {"qeth_trace",
  39                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  40         [QETH_DBF_MSG]   = {"qeth_msg",
  41                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  42         [QETH_DBF_SENSE] = {"qeth_sense",
  43                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  44         [QETH_DBF_MISC]  = {"qeth_misc",
  45                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  46         [QETH_DBF_CTRL]  = {"qeth_control",
  47                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  48 };
  49 EXPORT_SYMBOL_GPL(qeth_dbf);
  50
  51 struct qeth_card_list_struct qeth_core_card_list;
  52 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  53 struct kmem_cache *qeth_core_header_cache;
  54 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  55
  56 static struct device *qeth_core_root_dev;
  57 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  58 static struct lock_class_key qdio_out_skb_queue_key;
  59
  60 static void qeth_send_control_data_cb(struct qeth_channel *,
  61                         struct qeth_cmd_buffer *);
  62 static int qeth_issue_next_read(struct qeth_card *);
  63 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  64 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  65 static void qeth_free_buffer_pool(struct qeth_card *);
  66 static int qeth_qdio_establish(struct qeth_card *);
  67
  68
  69 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  70                 struct qdio_buffer *buffer, int is_tso,
  71                 int *next_element_to_fill)
  72 {
  73         struct skb_frag_struct *frag;
  74         int fragno;
  75         unsigned long addr;
  76         int element, cnt, dlen;
  77
  78         fragno = skb_shinfo(skb)->nr_frags;
  79         element = *next_element_to_fill;
  80         dlen = 0;
  81
  82         if (is_tso)
  83                 buffer->element[element].flags =
  84                         SBAL_FLAGS_MIDDLE_FRAG;
  85         else
  86                 buffer->element[element].flags =
  87                         SBAL_FLAGS_FIRST_FRAG;
  88         dlen = skb->len - skb->data_len;
  89         if (dlen) {
  90                 buffer->element[element].addr = skb->data;
  91                 buffer->element[element].length = dlen;
  92                 element++;
  93         }
  94         for (cnt = 0; cnt < fragno; cnt++) {
  95                 frag = &skb_shinfo(skb)->frags[cnt];
  96                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  97                         frag->page_offset;
  98                 buffer->element[element].addr = (char *)addr;
  99                 buffer->element[element].length = frag->size;
 100                 if (cnt < (fragno - 1))
 101                         buffer->element[element].flags =
 102                                 SBAL_FLAGS_MIDDLE_FRAG;
 103                 else
 104                         buffer->element[element].flags =
 105                                 SBAL_FLAGS_LAST_FRAG;
 106                 element++;
 107         }
 108         *next_element_to_fill = element;
 109 }
 110
 111 static inline const char *qeth_get_cardname(struct qeth_card *card)
 112 {
 113         if (card->info.guestlan) {
 114                 switch (card->info.type) {
 115                 case QETH_CARD_TYPE_OSAE:
 116                         return " Guest LAN QDIO";
 117                 case QETH_CARD_TYPE_IQD:
 118                         return " Guest LAN Hiper";
 119                 default:
 120                         return " unknown";
 121                 }
 122         } else {
 123                 switch (card->info.type) {
 124                 case QETH_CARD_TYPE_OSAE:
 125                         return " OSD Express";
 126                 case QETH_CARD_TYPE_IQD:
 127                         return " HiperSockets";
 128                 case QETH_CARD_TYPE_OSN:
 129                         return " OSN QDIO";
 130                 default:
 131                         return " unknown";
 132                 }
 133         }
 134         return " n/a";
 135 }
 136
 137 /* max length to be returned: 14 */
 138 const char *qeth_get_cardname_short(struct qeth_card *card)
 139 {
 140         if (card->info.guestlan) {
 141                 switch (card->info.type) {
 142                 case QETH_CARD_TYPE_OSAE:
 143                         return "GuestLAN QDIO";
 144                 case QETH_CARD_TYPE_IQD:
 145                         return "GuestLAN Hiper";
 146                 default:
 147                         return "unknown";
 148                 }
 149         } else {
 150                 switch (card->info.type) {
 151                 case QETH_CARD_TYPE_OSAE:
 152                         switch (card->info.link_type) {
 153                         case QETH_LINK_TYPE_FAST_ETH:
 154                                 return "OSD_100";
 155                         case QETH_LINK_TYPE_HSTR:
 156                                 return "HSTR";
 157                         case QETH_LINK_TYPE_GBIT_ETH:
 158                                 return "OSD_1000";
 159                         case QETH_LINK_TYPE_10GBIT_ETH:
 160                                 return "OSD_10GIG";
 161                         case QETH_LINK_TYPE_LANE_ETH100:
 162                                 return "OSD_FE_LANE";
 163                         case QETH_LINK_TYPE_LANE_TR:
 164                                 return "OSD_TR_LANE";
 165                         case QETH_LINK_TYPE_LANE_ETH1000:
 166                                 return "OSD_GbE_LANE";
 167                         case QETH_LINK_TYPE_LANE:
 168                                 return "OSD_ATM_LANE";
 169                         default:
 170                                 return "OSD_Express";
 171                         }
 172                 case QETH_CARD_TYPE_IQD:
 173                         return "HiperSockets";
 174                 case QETH_CARD_TYPE_OSN:
 175                         return "OSN";
 176                 default:
 177                         return "unknown";
 178                 }
 179         }
 180         return "n/a";
 181 }
 182
 183 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 184                          int clear_start_mask)
 185 {
 186         unsigned long flags;
 187
 188         spin_lock_irqsave(&card->thread_mask_lock, flags);
 189         card->thread_allowed_mask = threads;
 190         if (clear_start_mask)
 191                 card->thread_start_mask &= threads;
 192         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 193         wake_up(&card->wait_q);
 194 }
 195 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 196
 197 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 198 {
 199         unsigned long flags;
 200         int rc = 0;
 201
 202         spin_lock_irqsave(&card->thread_mask_lock, flags);
 203         rc = (card->thread_running_mask & threads);
 204         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 205         return rc;
 206 }
 207 EXPORT_SYMBOL_GPL(qeth_threads_running);
 208
 209 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 210 {
 211         return wait_event_interruptible(card->wait_q,
 212                         qeth_threads_running(card, threads) == 0);
 213 }
 214 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 215
 216 void qeth_clear_working_pool_list(struct qeth_card *card)
 217 {
 218         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 219
 220         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 221         list_for_each_entry_safe(pool_entry, tmp,
 222                             &card->qdio.in_buf_pool.entry_list, list){
 223                         list_del(&pool_entry->list);
 224         }
 225 }
 226 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 227
 228 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 229 {
 230         struct qeth_buffer_pool_entry *pool_entry;
 231         void *ptr;
 232         int i, j;
 233
 234         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 235         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 236                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 237                 if (!pool_entry) {
 238                         qeth_free_buffer_pool(card);
 239                         return -ENOMEM;
 240                 }
 241                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 242                         ptr = (void *) __get_free_page(GFP_KERNEL);
 243                         if (!ptr) {
 244                                 while (j > 0)
 245                                         free_page((unsigned long)
 246                                                   pool_entry->elements[--j]);
 247                                 kfree(pool_entry);
 248                                 qeth_free_buffer_pool(card);
 249                                 return -ENOMEM;
 250                         }
 251                         pool_entry->elements[j] = ptr;
 252                 }
 253                 list_add(&pool_entry->init_list,
 254                          &card->qdio.init_pool.entry_list);
 255         }
 256         return 0;
 257 }
 258
 259 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 260 {
 261         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 262
 263         if ((card->state != CARD_STATE_DOWN) &&
 264             (card->state != CARD_STATE_RECOVER))
 265                 return -EPERM;
 266
 267         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 268         qeth_clear_working_pool_list(card);
 269         qeth_free_buffer_pool(card);
 270         card->qdio.in_buf_pool.buf_count = bufcnt;
 271         card->qdio.init_pool.buf_count = bufcnt;
 272         return qeth_alloc_buffer_pool(card);
 273 }
 274
 275 int qeth_set_large_send(struct qeth_card *card,
 276                 enum qeth_large_send_types type)
 277 {
 278         int rc = 0;
 279
 280         if (card->dev == NULL) {
 281                 card->options.large_send = type;
 282                 return 0;
 283         }
 284         if (card->state == CARD_STATE_UP)
 285                 netif_tx_disable(card->dev);
 286         card->options.large_send = type;
 287         switch (card->options.large_send) {
 288         case QETH_LARGE_SEND_EDDP:
 289                 if (card->info.type != QETH_CARD_TYPE_IQD) {
 290                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 291                                         NETIF_F_HW_CSUM;
 292                 } else {
 293                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 294                                                 NETIF_F_HW_CSUM);
 295                         card->options.large_send = QETH_LARGE_SEND_NO;
 296                         rc = -EOPNOTSUPP;
 297                 }
 298                 break;
 299         case QETH_LARGE_SEND_TSO:
 300                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 301                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 302                                                 NETIF_F_HW_CSUM;
 303                 } else {
 304                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 305                                                 NETIF_F_HW_CSUM);
 306                         card->options.large_send = QETH_LARGE_SEND_NO;
 307                         rc = -EOPNOTSUPP;
 308                 }
 309                 break;
 310         default: /* includes QETH_LARGE_SEND_NO */
 311                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 312                                         NETIF_F_HW_CSUM);
 313                 break;
 314         }
 315         if (card->state == CARD_STATE_UP)
 316                 netif_wake_queue(card->dev);
 317         return rc;
 318 }
 319 EXPORT_SYMBOL_GPL(qeth_set_large_send);
 320
 321 static int qeth_issue_next_read(struct qeth_card *card)
 322 {
 323         int rc;
 324         struct qeth_cmd_buffer *iob;
 325
 326         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 327         if (card->read.state != CH_STATE_UP)
 328                 return -EIO;
 329         iob = qeth_get_buffer(&card->read);
 330         if (!iob) {
 331                 dev_warn(&card->gdev->dev, "The qeth device driver "
 332                         "failed to recover an error on the device\n");
 333                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 334                         "available\n", dev_name(&card->gdev->dev));
 335                 return -ENOMEM;
 336         }
 337         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 338         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 339         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 340                               (addr_t) iob, 0, 0);
 341         if (rc) {
 342                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 343                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 344                 atomic_set(&card->read.irq_pending, 0);
 345                 qeth_schedule_recovery(card);
 346                 wake_up(&card->wait_q);
 347         }
 348         return rc;
 349 }
 350
 351 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 352 {
 353         struct qeth_reply *reply;
 354
 355         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 356         if (reply) {
 357                 atomic_set(&reply->refcnt, 1);
 358                 atomic_set(&reply->received, 0);
 359                 reply->card = card;
 360         };
 361         return reply;
 362 }
 363
 364 static void qeth_get_reply(struct qeth_reply *reply)
 365 {
 366         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 367         atomic_inc(&reply->refcnt);
 368 }
 369
 370 static void qeth_put_reply(struct qeth_reply *reply)
 371 {
 372         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 373         if (atomic_dec_and_test(&reply->refcnt))
 374                 kfree(reply);
 375 }
 376
 377 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 378                 struct qeth_card *card)
 379 {
 380         char *ipa_name;
 381         int com = cmd->hdr.command;
 382         ipa_name = qeth_get_ipa_cmd_name(com);
 383         if (rc)
 384                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 385                                 ipa_name, com, QETH_CARD_IFNAME(card),
 386                                         rc, qeth_get_ipa_msg(rc));
 387         else
 388                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 389                                 ipa_name, com, QETH_CARD_IFNAME(card));
 390 }
 391
 392 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 393                 struct qeth_cmd_buffer *iob)
 394 {
 395         struct qeth_ipa_cmd *cmd = NULL;
 396
 397         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 398         if (IS_IPA(iob->data)) {
 399                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 400                 if (IS_IPA_REPLY(cmd)) {
 401                         if (cmd->hdr.command < IPA_CMD_SETCCID ||
 402                             cmd->hdr.command > IPA_CMD_MODCCID)
 403                                 qeth_issue_ipa_msg(cmd,
 404                                                 cmd->hdr.return_code, card);
 405                         return cmd;
 406                 } else {
 407                         switch (cmd->hdr.command) {
 408                         case IPA_CMD_STOPLAN:
 409                                 dev_warn(&card->gdev->dev,
 410                                            "The link for interface %s on CHPID"
 411                                            " 0x%X failed\n",
 412                                            QETH_CARD_IFNAME(card),
 413                                            card->info.chpid);
 414                                 card->lan_online = 0;
 415                                 if (card->dev && netif_carrier_ok(card->dev))
 416                                         netif_carrier_off(card->dev);
 417                                 return NULL;
 418                         case IPA_CMD_STARTLAN:
 419                                 dev_info(&card->gdev->dev,
 420                                            "The link for %s on CHPID 0x%X has"
 421                                            " been restored\n",
 422                                            QETH_CARD_IFNAME(card),
 423                                            card->info.chpid);
 424                                 netif_carrier_on(card->dev);
 425                                 card->lan_online = 1;
 426                                 qeth_schedule_recovery(card);
 427                                 return NULL;
 428                         case IPA_CMD_MODCCID:
 429                                 return cmd;
 430                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 431                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 432                                 break;
 433                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 434                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 435                                 break;
 436                         default:
 437                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 438                                            "but not a reply!\n");
 439                                 break;
 440                         }
 441                 }
 442         }
 443         return cmd;
 444 }
 445
 446 void qeth_clear_ipacmd_list(struct qeth_card *card)
 447 {
 448         struct qeth_reply *reply, *r;
 449         unsigned long flags;
 450
 451         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 452
 453         spin_lock_irqsave(&card->lock, flags);
 454         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 455                 qeth_get_reply(reply);
 456                 reply->rc = -EIO;
 457                 atomic_inc(&reply->received);
 458                 list_del_init(&reply->list);
 459                 wake_up(&reply->wait_q);
 460                 qeth_put_reply(reply);
 461         }
 462         spin_unlock_irqrestore(&card->lock, flags);
 463 }
 464 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 465
 466 static int qeth_check_idx_response(unsigned char *buffer)
 467 {
 468         if (!buffer)
 469                 return 0;
 470
 471         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 472         if ((buffer[2] & 0xc0) == 0xc0) {
 473                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 474                            "with cause code 0x%02x%s\n",
 475                            buffer[4],
 476                            ((buffer[4] == 0x22) ?
 477                             " -- try another portname" : ""));
 478                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 479                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 480                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 481                 return -EIO;
 482         }
 483         return 0;
 484 }
 485
 486 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 487                 __u32 len)
 488 {
 489         struct qeth_card *card;
 490
 491         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 492         card = CARD_FROM_CDEV(channel->ccwdev);
 493         if (channel == &card->read)
 494                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 495         else
 496                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 497         channel->ccw.count = len;
 498         channel->ccw.cda = (__u32) __pa(iob);
 499 }
 500
 501 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 502 {
 503         __u8 index;
 504
 505         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 506         index = channel->io_buf_no;
 507         do {
 508                 if (channel->iob[index].state == BUF_STATE_FREE) {
 509                         channel->iob[index].state = BUF_STATE_LOCKED;
 510                         channel->io_buf_no = (channel->io_buf_no + 1) %
 511                                 QETH_CMD_BUFFER_NO;
 512                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 513                         return channel->iob + index;
 514                 }
 515                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 516         } while (index != channel->io_buf_no);
 517
 518         return NULL;
 519 }
 520
 521 void qeth_release_buffer(struct qeth_channel *channel,
 522                 struct qeth_cmd_buffer *iob)
 523 {
 524         unsigned long flags;
 525
 526         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 527         spin_lock_irqsave(&channel->iob_lock, flags);
 528         memset(iob->data, 0, QETH_BUFSIZE);
 529         iob->state = BUF_STATE_FREE;
 530         iob->callback = qeth_send_control_data_cb;
 531         iob->rc = 0;
 532         spin_unlock_irqrestore(&channel->iob_lock, flags);
 533 }
 534 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 535
 536 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 537 {
 538         struct qeth_cmd_buffer *buffer = NULL;
 539         unsigned long flags;
 540
 541         spin_lock_irqsave(&channel->iob_lock, flags);
 542         buffer = __qeth_get_buffer(channel);
 543         spin_unlock_irqrestore(&channel->iob_lock, flags);
 544         return buffer;
 545 }
 546
 547 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 548 {
 549         struct qeth_cmd_buffer *buffer;
 550         wait_event(channel->wait_q,
 551                    ((buffer = qeth_get_buffer(channel)) != NULL));
 552         return buffer;
 553 }
 554 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 555
 556 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 557 {
 558         int cnt;
 559
 560         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 561                 qeth_release_buffer(channel, &channel->iob[cnt]);
 562         channel->buf_no = 0;
 563         channel->io_buf_no = 0;
 564 }
 565 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 566
 567 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 568                   struct qeth_cmd_buffer *iob)
 569 {
 570         struct qeth_card *card;
 571         struct qeth_reply *reply, *r;
 572         struct qeth_ipa_cmd *cmd;
 573         unsigned long flags;
 574         int keep_reply;
 575
 576         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 577
 578         card = CARD_FROM_CDEV(channel->ccwdev);
 579         if (qeth_check_idx_response(iob->data)) {
 580                 qeth_clear_ipacmd_list(card);
 581                 if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
 582                         dev_err(&card->gdev->dev,
 583                                 "The qeth device is not configured "
 584                                 "for the OSI layer required by z/VM\n");
 585                 qeth_schedule_recovery(card);
 586                 goto out;
 587         }
 588
 589         cmd = qeth_check_ipa_data(card, iob);
 590         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 591                 goto out;
 592         /*in case of OSN : check if cmd is set */
 593         if (card->info.type == QETH_CARD_TYPE_OSN &&
 594             cmd &&
 595             cmd->hdr.command != IPA_CMD_STARTLAN &&
 596             card->osn_info.assist_cb != NULL) {
 597                 card->osn_info.assist_cb(card->dev, cmd);
 598                 goto out;
 599         }
 600
 601         spin_lock_irqsave(&card->lock, flags);
 602         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 603                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 604                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 605                         qeth_get_reply(reply);
 606                         list_del_init(&reply->list);
 607                         spin_unlock_irqrestore(&card->lock, flags);
 608                         keep_reply = 0;
 609                         if (reply->callback != NULL) {
 610                                 if (cmd) {
 611                                         reply->offset = (__u16)((char *)cmd -
 612                                                         (char *)iob->data);
 613                                         keep_reply = reply->callback(card,
 614                                                         reply,
 615                                                         (unsigned long)cmd);
 616                                 } else
 617                                         keep_reply = reply->callback(card,
 618                                                         reply,
 619                                                         (unsigned long)iob);
 620                         }
 621                         if (cmd)
 622                                 reply->rc = (u16) cmd->hdr.return_code;
 623                         else if (iob->rc)
 624                                 reply->rc = iob->rc;
 625                         if (keep_reply) {
 626                                 spin_lock_irqsave(&card->lock, flags);
 627                                 list_add_tail(&reply->list,
 628                                               &card->cmd_waiter_list);
 629                                 spin_unlock_irqrestore(&card->lock, flags);
 630                         } else {
 631                                 atomic_inc(&reply->received);
 632                                 wake_up(&reply->wait_q);
 633                         }
 634                         qeth_put_reply(reply);
 635                         goto out;
 636                 }
 637         }
 638         spin_unlock_irqrestore(&card->lock, flags);
 639 out:
 640         memcpy(&card->seqno.pdu_hdr_ack,
 641                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 642                 QETH_SEQ_NO_LENGTH);
 643         qeth_release_buffer(channel, iob);
 644 }
 645
 646 static int qeth_setup_channel(struct qeth_channel *channel)
 647 {
 648         int cnt;
 649
 650         QETH_DBF_TEXT(SETUP, 2, "setupch");
 651         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 652                 channel->iob[cnt].data = (char *)
 653                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 654                 if (channel->iob[cnt].data == NULL)
 655                         break;
 656                 channel->iob[cnt].state = BUF_STATE_FREE;
 657                 channel->iob[cnt].channel = channel;
 658                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 659                 channel->iob[cnt].rc = 0;
 660         }
 661         if (cnt < QETH_CMD_BUFFER_NO) {
 662                 while (cnt-- > 0)
 663                         kfree(channel->iob[cnt].data);
 664                 return -ENOMEM;
 665         }
 666         channel->buf_no = 0;
 667         channel->io_buf_no = 0;
 668         atomic_set(&channel->irq_pending, 0);
 669         spin_lock_init(&channel->iob_lock);
 670
 671         init_waitqueue_head(&channel->wait_q);
 672         return 0;
 673 }
 674
 675 static int qeth_set_thread_start_bit(struct qeth_card *card,
 676                 unsigned long thread)
 677 {
 678         unsigned long flags;
 679
 680         spin_lock_irqsave(&card->thread_mask_lock, flags);
 681         if (!(card->thread_allowed_mask & thread) ||
 682               (card->thread_start_mask & thread)) {
 683                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 684                 return -EPERM;
 685         }
 686         card->thread_start_mask |= thread;
 687         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 688         return 0;
 689 }
 690
 691 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 692 {
 693         unsigned long flags;
 694
 695         spin_lock_irqsave(&card->thread_mask_lock, flags);
 696         card->thread_start_mask &= ~thread;
 697         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 698         wake_up(&card->wait_q);
 699 }
 700 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 701
 702 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 703 {
 704         unsigned long flags;
 705
 706         spin_lock_irqsave(&card->thread_mask_lock, flags);
 707         card->thread_running_mask &= ~thread;
 708         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 709         wake_up(&card->wait_q);
 710 }
 711 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 712
 713 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 714 {
 715         unsigned long flags;
 716         int rc = 0;
 717
 718         spin_lock_irqsave(&card->thread_mask_lock, flags);
 719         if (card->thread_start_mask & thread) {
 720                 if ((card->thread_allowed_mask & thread) &&
 721                     !(card->thread_running_mask & thread)) {
 722                         rc = 1;
 723                         card->thread_start_mask &= ~thread;
 724                         card->thread_running_mask |= thread;
 725                 } else
 726                         rc = -EPERM;
 727         }
 728         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 729         return rc;
 730 }
 731
 732 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 733 {
 734         int rc = 0;
 735
 736         wait_event(card->wait_q,
 737                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 738         return rc;
 739 }
 740 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 741
 742 void qeth_schedule_recovery(struct qeth_card *card)
 743 {
 744         QETH_DBF_TEXT(TRACE, 2, "startrec");
 745         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 746                 schedule_work(&card->kernel_thread_starter);
 747 }
 748 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 749
 750 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 751 {
 752         int dstat, cstat;
 753         char *sense;
 754
 755         sense = (char *) irb->ecw;
 756         cstat = irb->scsw.cmd.cstat;
 757         dstat = irb->scsw.cmd.dstat;
 758
 759         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 760                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 761                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 762                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 763                 dev_warn(&cdev->dev, "The qeth device driver "
 764                         "failed to recover an error on the device\n");
 765                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
 766                         dev_name(&cdev->dev), dstat, cstat);
 767                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 768                                 16, 1, irb, 64, 1);
 769                 return 1;
 770         }
 771
 772         if (dstat & DEV_STAT_UNIT_CHECK) {
 773                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 774                     SENSE_RESETTING_EVENT_FLAG) {
 775                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 776                         return 1;
 777                 }
 778                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 779                     SENSE_COMMAND_REJECT_FLAG) {
 780                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 781                         return 1;
 782                 }
 783                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 784                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 785                         return 1;
 786                 }
 787                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 788                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 789                         return 0;
 790                 }
 791                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 792                         return 1;
 793         }
 794         return 0;
 795 }
 796
 797 static long __qeth_check_irb_error(struct ccw_device *cdev,
 798                 unsigned long intparm, struct irb *irb)
 799 {
 800         if (!IS_ERR(irb))
 801                 return 0;
 802
 803         switch (PTR_ERR(irb)) {
 804         case -EIO:
 805                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 806                         dev_name(&cdev->dev));
 807                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 808                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 809                 break;
 810         case -ETIMEDOUT:
 811                 dev_warn(&cdev->dev, "A hardware operation timed out"
 812                         " on the device\n");
 813                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 814                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 815                 if (intparm == QETH_RCD_PARM) {
 816                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 817
 818                         if (card && (card->data.ccwdev == cdev)) {
 819                                 card->data.state = CH_STATE_DOWN;
 820                                 wake_up(&card->wait_q);
 821                         }
 822                 }
 823                 break;
 824         default:
 825                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 826                         dev_name(&cdev->dev), PTR_ERR(irb));
 827                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 828                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 829         }
 830         return PTR_ERR(irb);
 831 }
 832
 833 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 834                 struct irb *irb)
 835 {
 836         int rc;
 837         int cstat, dstat;
 838         struct qeth_cmd_buffer *buffer;
 839         struct qeth_channel *channel;
 840         struct qeth_card *card;
 841         struct qeth_cmd_buffer *iob;
 842         __u8 index;
 843
 844         QETH_DBF_TEXT(TRACE, 5, "irq");
 845
 846         if (__qeth_check_irb_error(cdev, intparm, irb))
 847                 return;
 848         cstat = irb->scsw.cmd.cstat;
 849         dstat = irb->scsw.cmd.dstat;
 850
 851         card = CARD_FROM_CDEV(cdev);
 852         if (!card)
 853                 return;
 854
 855         if (card->read.ccwdev == cdev) {
 856                 channel = &card->read;
 857                 QETH_DBF_TEXT(TRACE, 5, "read");
 858         } else if (card->write.ccwdev == cdev) {
 859                 channel = &card->write;
 860                 QETH_DBF_TEXT(TRACE, 5, "write");
 861         } else {
 862                 channel = &card->data;
 863                 QETH_DBF_TEXT(TRACE, 5, "data");
 864         }
 865         atomic_set(&channel->irq_pending, 0);
 866
 867         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 868                 channel->state = CH_STATE_STOPPED;
 869
 870         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 871                 channel->state = CH_STATE_HALTED;
 872
 873         /*let's wake up immediately on data channel*/
 874         if ((channel == &card->data) && (intparm != 0) &&
 875             (intparm != QETH_RCD_PARM))
 876                 goto out;
 877
 878         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 879                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 880                 /* we don't have to handle this further */
 881                 intparm = 0;
 882         }
 883         if (intparm == QETH_HALT_CHANNEL_PARM) {
 884                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 885                 /* we don't have to handle this further */
 886                 intparm = 0;
 887         }
 888         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 889             (dstat & DEV_STAT_UNIT_CHECK) ||
 890             (cstat)) {
 891                 if (irb->esw.esw0.erw.cons) {
 892                         dev_warn(&channel->ccwdev->dev,
 893                                 "The qeth device driver failed to recover "
 894                                 "an error on the device\n");
 895                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 896                                 "0x%X dstat 0x%X\n",
 897                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 898                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 899                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 900                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 901                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 902                 }
 903                 if (intparm == QETH_RCD_PARM) {
 904                         channel->state = CH_STATE_DOWN;
 905                         goto out;
 906                 }
 907                 rc = qeth_get_problem(cdev, irb);
 908                 if (rc) {
 909                         qeth_clear_ipacmd_list(card);
 910                         qeth_schedule_recovery(card);
 911                         goto out;
 912                 }
 913         }
 914
 915         if (intparm == QETH_RCD_PARM) {
 916                 channel->state = CH_STATE_RCD_DONE;
 917                 goto out;
 918         }
 919         if (intparm) {
 920                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 921                 buffer->state = BUF_STATE_PROCESSED;
 922         }
 923         if (channel == &card->data)
 924                 return;
 925         if (channel == &card->read &&
 926             channel->state == CH_STATE_UP)
 927                 qeth_issue_next_read(card);
 928
 929         iob = channel->iob;
 930         index = channel->buf_no;
 931         while (iob[index].state == BUF_STATE_PROCESSED) {
 932                 if (iob[index].callback != NULL)
 933                         iob[index].callback(channel, iob + index);
 934
 935                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 936         }
 937         channel->buf_no = index;
 938 out:
 939         wake_up(&card->wait_q);
 940         return;
 941 }
 942
 943 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 944                  struct qeth_qdio_out_buffer *buf)
 945 {
 946         int i;
 947         struct sk_buff *skb;
 948
 949         /* is PCI flag set on buffer? */
 950         if (buf->buffer->element[0].flags & 0x40)
 951                 atomic_dec(&queue->set_pci_flags_count);
 952
 953         skb = skb_dequeue(&buf->skb_list);
 954         while (skb) {
 955                 atomic_dec(&skb->users);
 956                 dev_kfree_skb_any(skb);
 957                 skb = skb_dequeue(&buf->skb_list);
 958         }
 959         qeth_eddp_buf_release_contexts(buf);
 960         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 961                 if (buf->buffer->element[i].addr && buf->is_header[i])
 962                         kmem_cache_free(qeth_core_header_cache,
 963                                 buf->buffer->element[i].addr);
 964                 buf->is_header[i] = 0;
 965                 buf->buffer->element[i].length = 0;
 966                 buf->buffer->element[i].addr = NULL;
 967                 buf->buffer->element[i].flags = 0;
 968         }
 969         buf->next_element_to_fill = 0;
 970         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 971 }
 972
 973 void qeth_clear_qdio_buffers(struct qeth_card *card)
 974 {
 975         int i, j;
 976
 977         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 978         /* clear outbound buffers to free skbs */
 979         for (i = 0; i < card->qdio.no_out_queues; ++i)
 980                 if (card->qdio.out_qs[i]) {
 981                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 982                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 983                                                 &card->qdio.out_qs[i]->bufs[j]);
 984                 }
 985 }
 986 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 987
 988 static void qeth_free_buffer_pool(struct qeth_card *card)
 989 {
 990         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 991         int i = 0;
 992         QETH_DBF_TEXT(TRACE, 5, "freepool");
 993         list_for_each_entry_safe(pool_entry, tmp,
 994                                  &card->qdio.init_pool.entry_list, init_list){
 995                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 996                         free_page((unsigned long)pool_entry->elements[i]);
 997                 list_del(&pool_entry->init_list);
 998                 kfree(pool_entry);
 999         }
1000 }
1001
1002 static void qeth_free_qdio_buffers(struct qeth_card *card)
1003 {
1004         int i, j;
1005
1006         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
1007         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1008                 QETH_QDIO_UNINITIALIZED)
1009                 return;
1010         kfree(card->qdio.in_q);
1011         card->qdio.in_q = NULL;
1012         /* inbound buffer pool */
1013         qeth_free_buffer_pool(card);
1014         /* free outbound qdio_qs */
1015         if (card->qdio.out_qs) {
1016                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1017                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1018                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
1019                                                 &card->qdio.out_qs[i]->bufs[j]);
1020                         kfree(card->qdio.out_qs[i]);
1021                 }
1022                 kfree(card->qdio.out_qs);
1023                 card->qdio.out_qs = NULL;
1024         }
1025 }
1026
1027 static void qeth_clean_channel(struct qeth_channel *channel)
1028 {
1029         int cnt;
1030
1031         QETH_DBF_TEXT(SETUP, 2, "freech");
1032         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1033                 kfree(channel->iob[cnt].data);
1034 }
1035
1036 static int qeth_is_1920_device(struct qeth_card *card)
1037 {
1038         int single_queue = 0;
1039         struct ccw_device *ccwdev;
1040         struct channelPath_dsc {
1041                 u8 flags;
1042                 u8 lsn;
1043                 u8 desc;
1044                 u8 chpid;
1045                 u8 swla;
1046                 u8 zeroes;
1047                 u8 chla;
1048                 u8 chpp;
1049         } *chp_dsc;
1050
1051         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1052
1053         ccwdev = card->data.ccwdev;
1054         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1055         if (chp_dsc != NULL) {
1056                 /* CHPP field bit 6 == 1 -> single queue */
1057                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1058                 kfree(chp_dsc);
1059         }
1060         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1061         return single_queue;
1062 }
1063
1064 static void qeth_init_qdio_info(struct qeth_card *card)
1065 {
1066         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1067         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1068         /* inbound */
1069         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1070         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1071         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1072         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1073         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1074 }
1075
1076 static void qeth_set_intial_options(struct qeth_card *card)
1077 {
1078         card->options.route4.type = NO_ROUTER;
1079         card->options.route6.type = NO_ROUTER;
1080         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1081         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1082         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1083         card->options.fake_broadcast = 0;
1084         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1085         card->options.performance_stats = 0;
1086         card->options.rx_sg_cb = QETH_RX_SG_CB;
1087 }
1088
1089 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1090 {
1091         unsigned long flags;
1092         int rc = 0;
1093
1094         spin_lock_irqsave(&card->thread_mask_lock, flags);
1095         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1096                         (u8) card->thread_start_mask,
1097                         (u8) card->thread_allowed_mask,
1098                         (u8) card->thread_running_mask);
1099         rc = (card->thread_start_mask & thread);
1100         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1101         return rc;
1102 }
1103
1104 static void qeth_start_kernel_thread(struct work_struct *work)
1105 {
1106         struct qeth_card *card = container_of(work, struct qeth_card,
1107                                         kernel_thread_starter);
1108         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1109
1110         if (card->read.state != CH_STATE_UP &&
1111             card->write.state != CH_STATE_UP)
1112                 return;
1113         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1114                 kthread_run(card->discipline.recover, (void *) card,
1115                                 "qeth_recover");
1116 }
1117
1118 static int qeth_setup_card(struct qeth_card *card)
1119 {
1120
1121         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1122         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1123
1124         card->read.state  = CH_STATE_DOWN;
1125         card->write.state = CH_STATE_DOWN;
1126         card->data.state  = CH_STATE_DOWN;
1127         card->state = CARD_STATE_DOWN;
1128         card->lan_online = 0;
1129         card->use_hard_stop = 0;
1130         card->dev = NULL;
1131         spin_lock_init(&card->vlanlock);
1132         spin_lock_init(&card->mclock);
1133         card->vlangrp = NULL;
1134         spin_lock_init(&card->lock);
1135         spin_lock_init(&card->ip_lock);
1136         spin_lock_init(&card->thread_mask_lock);
1137         card->thread_start_mask = 0;
1138         card->thread_allowed_mask = 0;
1139         card->thread_running_mask = 0;
1140         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1141         INIT_LIST_HEAD(&card->ip_list);
1142         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1143         if (!card->ip_tbd_list) {
1144                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1145                 return -ENOMEM;
1146         }
1147         INIT_LIST_HEAD(card->ip_tbd_list);
1148         INIT_LIST_HEAD(&card->cmd_waiter_list);
1149         init_waitqueue_head(&card->wait_q);
1150         /* intial options */
1151         qeth_set_intial_options(card);
1152         /* IP address takeover */
1153         INIT_LIST_HEAD(&card->ipato.entries);
1154         card->ipato.enabled = 0;
1155         card->ipato.invert4 = 0;
1156         card->ipato.invert6 = 0;
1157         /* init QDIO stuff */
1158         qeth_init_qdio_info(card);
1159         return 0;
1160 }
1161
1162 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1163 {
1164         struct qeth_card *card = container_of(slr, struct qeth_card,
1165                                         qeth_service_level);
1166         seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
1167                         card->info.mcl_level);
1168 }
1169
1170 static struct qeth_card *qeth_alloc_card(void)
1171 {
1172         struct qeth_card *card;
1173
1174         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1175         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1176         if (!card)
1177                 return NULL;
1178         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1179         if (qeth_setup_channel(&card->read)) {
1180                 kfree(card);
1181                 return NULL;
1182         }
1183         if (qeth_setup_channel(&card->write)) {
1184                 qeth_clean_channel(&card->read);
1185                 kfree(card);
1186                 return NULL;
1187         }
1188         card->options.layer2 = -1;
1189         card->qeth_service_level.seq_print = qeth_core_sl_print;
1190         register_service_level(&card->qeth_service_level);
1191         return card;
1192 }
1193
1194 static int qeth_determine_card_type(struct qeth_card *card)
1195 {
1196         int i = 0;
1197
1198         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1199
1200         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1201         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1202         while (known_devices[i][4]) {
1203                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1204                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1205                         card->info.type = known_devices[i][4];
1206                         card->qdio.no_out_queues = known_devices[i][8];
1207                         card->info.is_multicast_different = known_devices[i][9];
1208                         if (qeth_is_1920_device(card)) {
1209                                 dev_info(&card->gdev->dev,
1210                                         "Priority Queueing not supported\n");
1211                                 card->qdio.no_out_queues = 1;
1212                                 card->qdio.default_out_queue = 0;
1213                         }
1214                         return 0;
1215                 }
1216                 i++;
1217         }
1218         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1219         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1220                 "unknown type\n");
1221         return -ENOENT;
1222 }
1223
1224 static int qeth_clear_channel(struct qeth_channel *channel)
1225 {
1226         unsigned long flags;
1227         struct qeth_card *card;
1228         int rc;
1229
1230         QETH_DBF_TEXT(TRACE, 3, "clearch");
1231         card = CARD_FROM_CDEV(channel->ccwdev);
1232         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1233         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1234         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1235
1236         if (rc)
1237                 return rc;
1238         rc = wait_event_interruptible_timeout(card->wait_q,
1239                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1240         if (rc == -ERESTARTSYS)
1241                 return rc;
1242         if (channel->state != CH_STATE_STOPPED)
1243                 return -ETIME;
1244         channel->state = CH_STATE_DOWN;
1245         return 0;
1246 }
1247
1248 static int qeth_halt_channel(struct qeth_channel *channel)
1249 {
1250         unsigned long flags;
1251         struct qeth_card *card;
1252         int rc;
1253
1254         QETH_DBF_TEXT(TRACE, 3, "haltch");
1255         card = CARD_FROM_CDEV(channel->ccwdev);
1256         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1257         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1258         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1259
1260         if (rc)
1261                 return rc;
1262         rc = wait_event_interruptible_timeout(card->wait_q,
1263                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1264         if (rc == -ERESTARTSYS)
1265                 return rc;
1266         if (channel->state != CH_STATE_HALTED)
1267                 return -ETIME;
1268         return 0;
1269 }
1270
1271 static int qeth_halt_channels(struct qeth_card *card)
1272 {
1273         int rc1 = 0, rc2 = 0, rc3 = 0;
1274
1275         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1276         rc1 = qeth_halt_channel(&card->read);
1277         rc2 = qeth_halt_channel(&card->write);
1278         rc3 = qeth_halt_channel(&card->data);
1279         if (rc1)
1280                 return rc1;
1281         if (rc2)
1282                 return rc2;
1283         return rc3;
1284 }
1285
1286 static int qeth_clear_channels(struct qeth_card *card)
1287 {
1288         int rc1 = 0, rc2 = 0, rc3 = 0;
1289
1290         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1291         rc1 = qeth_clear_channel(&card->read);
1292         rc2 = qeth_clear_channel(&card->write);
1293         rc3 = qeth_clear_channel(&card->data);
1294         if (rc1)
1295                 return rc1;
1296         if (rc2)
1297                 return rc2;
1298         return rc3;
1299 }
1300
1301 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1302 {
1303         int rc = 0;
1304
1305         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1306         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1307
1308         if (halt)
1309                 rc = qeth_halt_channels(card);
1310         if (rc)
1311                 return rc;
1312         return qeth_clear_channels(card);
1313 }
1314
1315 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1316 {
1317         int rc = 0;
1318
1319         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1320         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1321                 QETH_QDIO_CLEANING)) {
1322         case QETH_QDIO_ESTABLISHED:
1323                 if (card->info.type == QETH_CARD_TYPE_IQD)
1324                         rc = qdio_cleanup(CARD_DDEV(card),
1325                                 QDIO_FLAG_CLEANUP_USING_HALT);
1326                 else
1327                         rc = qdio_cleanup(CARD_DDEV(card),
1328                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1329                 if (rc)
1330                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1331                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1332                 break;
1333         case QETH_QDIO_CLEANING:
1334                 return rc;
1335         default:
1336                 break;
1337         }
1338         rc = qeth_clear_halt_card(card, use_halt);
1339         if (rc)
1340                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1341         card->state = CARD_STATE_DOWN;
1342         return rc;
1343 }
1344 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1345
1346 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1347                                int *length)
1348 {
1349         struct ciw *ciw;
1350         char *rcd_buf;
1351         int ret;
1352         struct qeth_channel *channel = &card->data;
1353         unsigned long flags;
1354
1355         /*
1356          * scan for RCD command in extended SenseID data
1357          */
1358         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1359         if (!ciw || ciw->cmd == 0)
1360                 return -EOPNOTSUPP;
1361         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1362         if (!rcd_buf)
1363                 return -ENOMEM;
1364
1365         channel->ccw.cmd_code = ciw->cmd;
1366         channel->ccw.cda = (__u32) __pa(rcd_buf);
1367         channel->ccw.count = ciw->count;
1368         channel->ccw.flags = CCW_FLAG_SLI;
1369         channel->state = CH_STATE_RCD;
1370         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1371         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1372                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1373                                        QETH_RCD_TIMEOUT);
1374         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1375         if (!ret)
1376                 wait_event(card->wait_q,
1377                            (channel->state == CH_STATE_RCD_DONE ||
1378                             channel->state == CH_STATE_DOWN));
1379         if (channel->state == CH_STATE_DOWN)
1380                 ret = -EIO;
1381         else
1382                 channel->state = CH_STATE_DOWN;
1383         if (ret) {
1384                 kfree(rcd_buf);
1385                 *buffer = NULL;
1386                 *length = 0;
1387         } else {
1388                 *length = ciw->count;
1389                 *buffer = rcd_buf;
1390         }
1391         return ret;
1392 }
1393
1394 static int qeth_get_unitaddr(struct qeth_card *card)
1395 {
1396         int length;
1397         char *prcd;
1398         int rc;
1399
1400         QETH_DBF_TEXT(SETUP, 2, "getunit");
1401         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1402         if (rc) {
1403                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
1404                         dev_name(&card->gdev->dev), rc);
1405                 return rc;
1406         }
1407         card->info.chpid = prcd[30];
1408         card->info.unit_addr2 = prcd[31];
1409         card->info.cula = prcd[63];
1410         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1411                                (prcd[0x11] == _ascebc['M']));
1412         kfree(prcd);
1413         return 0;
1414 }
1415
1416 static void qeth_init_tokens(struct qeth_card *card)
1417 {
1418         card->token.issuer_rm_w = 0x00010103UL;
1419         card->token.cm_filter_w = 0x00010108UL;
1420         card->token.cm_connection_w = 0x0001010aUL;
1421         card->token.ulp_filter_w = 0x0001010bUL;
1422         card->token.ulp_connection_w = 0x0001010dUL;
1423 }
1424
1425 static void qeth_init_func_level(struct qeth_card *card)
1426 {
1427         if (card->ipato.enabled) {
1428                 if (card->info.type == QETH_CARD_TYPE_IQD)
1429                                 card->info.func_level =
1430                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1431                 else
1432                                 card->info.func_level =
1433                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1434         } else {
1435                 if (card->info.type == QETH_CARD_TYPE_IQD)
1436                 /*FIXME:why do we have same values for  dis and ena for
1437                   osae??? */
1438                         card->info.func_level =
1439                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1440                 else
1441                         card->info.func_level =
1442                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1443         }
1444 }
1445
1446 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1447                 void (*idx_reply_cb)(struct qeth_channel *,
1448                         struct qeth_cmd_buffer *))
1449 {
1450         struct qeth_cmd_buffer *iob;
1451         unsigned long flags;
1452         int rc;
1453         struct qeth_card *card;
1454
1455         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1456         card = CARD_FROM_CDEV(channel->ccwdev);
1457         iob = qeth_get_buffer(channel);
1458         iob->callback = idx_reply_cb;
1459         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1460         channel->ccw.count = QETH_BUFSIZE;
1461         channel->ccw.cda = (__u32) __pa(iob->data);
1462
1463         wait_event(card->wait_q,
1464                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1465         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1466         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1467         rc = ccw_device_start(channel->ccwdev,
1468                               &channel->ccw, (addr_t) iob, 0, 0);
1469         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1470
1471         if (rc) {
1472                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1473                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1474                 atomic_set(&channel->irq_pending, 0);
1475                 wake_up(&card->wait_q);
1476                 return rc;
1477         }
1478         rc = wait_event_interruptible_timeout(card->wait_q,
1479                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1480         if (rc == -ERESTARTSYS)
1481                 return rc;
1482         if (channel->state != CH_STATE_UP) {
1483                 rc = -ETIME;
1484                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1485                 qeth_clear_cmd_buffers(channel);
1486         } else
1487                 rc = 0;
1488         return rc;
1489 }
1490
1491 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1492                 void (*idx_reply_cb)(struct qeth_channel *,
1493                         struct qeth_cmd_buffer *))
1494 {
1495         struct qeth_card *card;
1496         struct qeth_cmd_buffer *iob;
1497         unsigned long flags;
1498         __u16 temp;
1499         __u8 tmp;
1500         int rc;
1501         struct ccw_dev_id temp_devid;
1502
1503         card = CARD_FROM_CDEV(channel->ccwdev);
1504
1505         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1506
1507         iob = qeth_get_buffer(channel);
1508         iob->callback = idx_reply_cb;
1509         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1510         channel->ccw.count = IDX_ACTIVATE_SIZE;
1511         channel->ccw.cda = (__u32) __pa(iob->data);
1512         if (channel == &card->write) {
1513                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1514                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1515                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1516                 card->seqno.trans_hdr++;
1517         } else {
1518                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1519                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1520                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1521         }
1522         tmp = ((__u8)card->info.portno) | 0x80;
1523         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1524         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1525                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1526         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1527                &card->info.func_level, sizeof(__u16));
1528         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1529         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1530         temp = (card->info.cula << 8) + card->info.unit_addr2;
1531         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1532
1533         wait_event(card->wait_q,
1534                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1535         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1536         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1537         rc = ccw_device_start(channel->ccwdev,
1538                               &channel->ccw, (addr_t) iob, 0, 0);
1539         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1540
1541         if (rc) {
1542                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1543                         rc);
1544                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1545                 atomic_set(&channel->irq_pending, 0);
1546                 wake_up(&card->wait_q);
1547                 return rc;
1548         }
1549         rc = wait_event_interruptible_timeout(card->wait_q,
1550                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1551         if (rc == -ERESTARTSYS)
1552                 return rc;
1553         if (channel->state != CH_STATE_ACTIVATING) {
1554                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1555                         " failed to recover an error on the device\n");
1556                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1557                         dev_name(&channel->ccwdev->dev));
1558                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1559                 qeth_clear_cmd_buffers(channel);
1560                 return -ETIME;
1561         }
1562         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1563 }
1564
1565 static int qeth_peer_func_level(int level)
1566 {
1567         if ((level & 0xff) == 8)
1568                 return (level & 0xff) + 0x400;
1569         if (((level >> 8) & 3) == 1)
1570                 return (level & 0xff) + 0x200;
1571         return level;
1572 }
1573
1574 static void qeth_idx_write_cb(struct qeth_channel *channel,
1575                 struct qeth_cmd_buffer *iob)
1576 {
1577         struct qeth_card *card;
1578         __u16 temp;
1579
1580         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1581
1582         if (channel->state == CH_STATE_DOWN) {
1583                 channel->state = CH_STATE_ACTIVATING;
1584                 goto out;
1585         }
1586         card = CARD_FROM_CDEV(channel->ccwdev);
1587
1588         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1589                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1590                         dev_err(&card->write.ccwdev->dev,
1591                                 "The adapter is used exclusively by another "
1592                                 "host\n");
1593                 else
1594                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1595                                 " negative reply\n",
1596                                 dev_name(&card->write.ccwdev->dev));
1597                 goto out;
1598         }
1599         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1600         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1601                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1602                         "function level mismatch (sent: 0x%x, received: "
1603                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1604                         card->info.func_level, temp);
1605                 goto out;
1606         }
1607         channel->state = CH_STATE_UP;
1608 out:
1609         qeth_release_buffer(channel, iob);
1610 }
1611
1612 static void qeth_idx_read_cb(struct qeth_channel *channel,
1613                 struct qeth_cmd_buffer *iob)
1614 {
1615         struct qeth_card *card;
1616         __u16 temp;
1617
1618         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1619         if (channel->state == CH_STATE_DOWN) {
1620                 channel->state = CH_STATE_ACTIVATING;
1621                 goto out;
1622         }
1623
1624         card = CARD_FROM_CDEV(channel->ccwdev);
1625         if (qeth_check_idx_response(iob->data))
1626                         goto out;
1627
1628         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1629                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1630                         dev_err(&card->write.ccwdev->dev,
1631                                 "The adapter is used exclusively by another "
1632                                 "host\n");
1633                 else
1634                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1635                                 " negative reply\n",
1636                                 dev_name(&card->read.ccwdev->dev));
1637                 goto out;
1638         }
1639
1640 /**
1641  * temporary fix for microcode bug
1642  * to revert it,replace OR by AND
1643  */
1644         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1645              (card->info.type == QETH_CARD_TYPE_OSAE))
1646                 card->info.portname_required = 1;
1647
1648         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1649         if (temp != qeth_peer_func_level(card->info.func_level)) {
1650                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1651                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1652                         dev_name(&card->read.ccwdev->dev),
1653                         card->info.func_level, temp);
1654                 goto out;
1655         }
1656         memcpy(&card->token.issuer_rm_r,
1657                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1658                QETH_MPC_TOKEN_LENGTH);
1659         memcpy(&card->info.mcl_level[0],
1660                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1661         channel->state = CH_STATE_UP;
1662 out:
1663         qeth_release_buffer(channel, iob);
1664 }
1665
1666 void qeth_prepare_control_data(struct qeth_card *card, int len,
1667                 struct qeth_cmd_buffer *iob)
1668 {
1669         qeth_setup_ccw(&card->write, iob->data, len);
1670         iob->callback = qeth_release_buffer;
1671
1672         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1673                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1674         card->seqno.trans_hdr++;
1675         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1676                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1677         card->seqno.pdu_hdr++;
1678         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1679                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1680         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1681 }
1682 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1683
1684 int qeth_send_control_data(struct qeth_card *card, int len,
1685                 struct qeth_cmd_buffer *iob,
1686                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1687                         unsigned long),
1688                 void *reply_param)
1689 {
1690         int rc;
1691         unsigned long flags;
1692         struct qeth_reply *reply = NULL;
1693         unsigned long timeout;
1694         struct qeth_ipa_cmd *cmd;
1695
1696         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1697
1698         reply = qeth_alloc_reply(card);
1699         if (!reply) {
1700                 return -ENOMEM;
1701         }
1702         reply->callback = reply_cb;
1703         reply->param = reply_param;
1704         if (card->state == CARD_STATE_DOWN)
1705                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1706         else
1707                 reply->seqno = card->seqno.ipa++;
1708         init_waitqueue_head(&reply->wait_q);
1709         spin_lock_irqsave(&card->lock, flags);
1710         list_add_tail(&reply->list, &card->cmd_waiter_list);
1711         spin_unlock_irqrestore(&card->lock, flags);
1712         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1713
1714         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1715         qeth_prepare_control_data(card, len, iob);
1716
1717         if (IS_IPA(iob->data))
1718                 timeout = jiffies + QETH_IPA_TIMEOUT;
1719         else
1720                 timeout = jiffies + QETH_TIMEOUT;
1721
1722         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1723         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1724         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1725                               (addr_t) iob, 0, 0);
1726         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1727         if (rc) {
1728                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1729                         "ccw_device_start rc = %i\n",
1730                         dev_name(&card->write.ccwdev->dev), rc);
1731                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1732                 spin_lock_irqsave(&card->lock, flags);
1733                 list_del_init(&reply->list);
1734                 qeth_put_reply(reply);
1735                 spin_unlock_irqrestore(&card->lock, flags);
1736                 qeth_release_buffer(iob->channel, iob);
1737                 atomic_set(&card->write.irq_pending, 0);
1738                 wake_up(&card->wait_q);
1739                 return rc;
1740         }
1741
1742         /* we have only one long running ipassist, since we can ensure
1743            process context of this command we can sleep */
1744         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1745         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1746             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1747                 if (!wait_event_timeout(reply->wait_q,
1748                     atomic_read(&reply->received), timeout))
1749                         goto time_err;
1750         } else {
1751                 while (!atomic_read(&reply->received)) {
1752                         if (time_after(jiffies, timeout))
1753                                 goto time_err;
1754                         cpu_relax();
1755                 };
1756         }
1757
1758         rc = reply->rc;
1759         qeth_put_reply(reply);
1760         return rc;
1761
1762 time_err:
1763         spin_lock_irqsave(&reply->card->lock, flags);
1764         list_del_init(&reply->list);
1765         spin_unlock_irqrestore(&reply->card->lock, flags);
1766         reply->rc = -ETIME;
1767         atomic_inc(&reply->received);
1768         wake_up(&reply->wait_q);
1769         rc = reply->rc;
1770         qeth_put_reply(reply);
1771         return rc;
1772 }
1773 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1774
1775 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1776                 unsigned long data)
1777 {
1778         struct qeth_cmd_buffer *iob;
1779
1780         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1781
1782         iob = (struct qeth_cmd_buffer *) data;
1783         memcpy(&card->token.cm_filter_r,
1784                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1785                QETH_MPC_TOKEN_LENGTH);
1786         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1787         return 0;
1788 }
1789
1790 static int qeth_cm_enable(struct qeth_card *card)
1791 {
1792         int rc;
1793         struct qeth_cmd_buffer *iob;
1794
1795         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1796
1797         iob = qeth_wait_for_buffer(&card->write);
1798         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1799         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1800                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1801         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1802                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1803
1804         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1805                                     qeth_cm_enable_cb, NULL);
1806         return rc;
1807 }
1808
1809 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1810                 unsigned long data)
1811 {
1812
1813         struct qeth_cmd_buffer *iob;
1814
1815         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1816
1817         iob = (struct qeth_cmd_buffer *) data;
1818         memcpy(&card->token.cm_connection_r,
1819                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1820                QETH_MPC_TOKEN_LENGTH);
1821         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1822         return 0;
1823 }
1824
1825 static int qeth_cm_setup(struct qeth_card *card)
1826 {
1827         int rc;
1828         struct qeth_cmd_buffer *iob;
1829
1830         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1831
1832         iob = qeth_wait_for_buffer(&card->write);
1833         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1834         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1835                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1836         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1837                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1838         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1839                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1840         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1841                                     qeth_cm_setup_cb, NULL);
1842         return rc;
1843
1844 }
1845
1846 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1847 {
1848         switch (card->info.type) {
1849         case QETH_CARD_TYPE_UNKNOWN:
1850                 return 1500;
1851         case QETH_CARD_TYPE_IQD:
1852                 return card->info.max_mtu;
1853         case QETH_CARD_TYPE_OSAE:
1854                 switch (card->info.link_type) {
1855                 case QETH_LINK_TYPE_HSTR:
1856                 case QETH_LINK_TYPE_LANE_TR:
1857                         return 2000;
1858                 default:
1859                         return 1492;
1860                 }
1861         default:
1862                 return 1500;
1863         }
1864 }
1865
1866 static inline int qeth_get_max_mtu_for_card(int cardtype)
1867 {
1868         switch (cardtype) {
1869
1870         case QETH_CARD_TYPE_UNKNOWN:
1871         case QETH_CARD_TYPE_OSAE:
1872         case QETH_CARD_TYPE_OSN:
1873                 return 61440;
1874         case QETH_CARD_TYPE_IQD:
1875                 return 57344;
1876         default:
1877                 return 1500;
1878         }
1879 }
1880
1881 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1882 {
1883         switch (cardtype) {
1884         case QETH_CARD_TYPE_IQD:
1885                 return 1;
1886         default:
1887                 return 0;
1888         }
1889 }
1890
1891 static inline int qeth_get_mtu_outof_framesize(int framesize)
1892 {
1893         switch (framesize) {
1894         case 0x4000:
1895                 return 8192;
1896         case 0x6000:
1897                 return 16384;
1898         case 0xa000:
1899                 return 32768;
1900         case 0xffff:
1901                 return 57344;
1902         default:
1903                 return 0;
1904         }
1905 }
1906
1907 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1908 {
1909         switch (card->info.type) {
1910         case QETH_CARD_TYPE_OSAE:
1911                 return ((mtu >= 576) && (mtu <= 61440));
1912         case QETH_CARD_TYPE_IQD:
1913                 return ((mtu >= 576) &&
1914                         (mtu <= card->info.max_mtu + 4096 - 32));
1915         case QETH_CARD_TYPE_OSN:
1916         case QETH_CARD_TYPE_UNKNOWN:
1917         default:
1918                 return 1;
1919         }
1920 }
1921
1922 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1923                 unsigned long data)
1924 {
1925
1926         __u16 mtu, framesize;
1927         __u16 len;
1928         __u8 link_type;
1929         struct qeth_cmd_buffer *iob;
1930
1931         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1932
1933         iob = (struct qeth_cmd_buffer *) data;
1934         memcpy(&card->token.ulp_filter_r,
1935                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1936                QETH_MPC_TOKEN_LENGTH);
1937         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1938                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1939                 mtu = qeth_get_mtu_outof_framesize(framesize);
1940                 if (!mtu) {
1941                         iob->rc = -EINVAL;
1942                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1943                         return 0;
1944                 }
1945                 card->info.max_mtu = mtu;
1946                 card->info.initial_mtu = mtu;
1947                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1948         } else {
1949                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1950                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1951                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1952         }
1953
1954         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1955         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1956                 memcpy(&link_type,
1957                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1958                 card->info.link_type = link_type;
1959         } else
1960                 card->info.link_type = 0;
1961         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1962         return 0;
1963 }
1964
1965 static int qeth_ulp_enable(struct qeth_card *card)
1966 {
1967         int rc;
1968         char prot_type;
1969         struct qeth_cmd_buffer *iob;
1970
1971         /*FIXME: trace view callbacks*/
1972         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1973
1974         iob = qeth_wait_for_buffer(&card->write);
1975         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1976
1977         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1978                 (__u8) card->info.portno;
1979         if (card->options.layer2)
1980                 if (card->info.type == QETH_CARD_TYPE_OSN)
1981                         prot_type = QETH_PROT_OSN2;
1982                 else
1983                         prot_type = QETH_PROT_LAYER2;
1984         else
1985                 prot_type = QETH_PROT_TCPIP;
1986
1987         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1988         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1989                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1990         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1991                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1992         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1993                card->info.portname, 9);
1994         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1995                                     qeth_ulp_enable_cb, NULL);
1996         return rc;
1997
1998 }
1999
2000 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2001                 unsigned long data)
2002 {
2003         struct qeth_cmd_buffer *iob;
2004
2005         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2006
2007         iob = (struct qeth_cmd_buffer *) data;
2008         memcpy(&card->token.ulp_connection_r,
2009                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2010                QETH_MPC_TOKEN_LENGTH);
2011         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2012         return 0;
2013 }
2014
2015 static int qeth_ulp_setup(struct qeth_card *card)
2016 {
2017         int rc;
2018         __u16 temp;
2019         struct qeth_cmd_buffer *iob;
2020         struct ccw_dev_id dev_id;
2021
2022         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2023
2024         iob = qeth_wait_for_buffer(&card->write);
2025         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2026
2027         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2028                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2029         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2030                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2031         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2032                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2033
2034         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2035         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2036         temp = (card->info.cula << 8) + card->info.unit_addr2;
2037         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2038         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2039                                     qeth_ulp_setup_cb, NULL);
2040         return rc;
2041 }
2042
2043 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2044 {
2045         int i, j;
2046
2047         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2048
2049         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2050                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2051                 return 0;
2052
2053         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2054                                   GFP_KERNEL);
2055         if (!card->qdio.in_q)
2056                 goto out_nomem;
2057         QETH_DBF_TEXT(SETUP, 2, "inq");
2058         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2059         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2060         /* give inbound qeth_qdio_buffers their qdio_buffers */
2061         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2062                 card->qdio.in_q->bufs[i].buffer =
2063                         &card->qdio.in_q->qdio_bufs[i];
2064         /* inbound buffer pool */
2065         if (qeth_alloc_buffer_pool(card))
2066                 goto out_freeinq;
2067         /* outbound */
2068         card->qdio.out_qs =
2069                 kmalloc(card->qdio.no_out_queues *
2070                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2071         if (!card->qdio.out_qs)
2072                 goto out_freepool;
2073         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2074                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2075                                                GFP_KERNEL);
2076                 if (!card->qdio.out_qs[i])
2077                         goto out_freeoutq;
2078                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2079                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2080                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2081                 card->qdio.out_qs[i]->queue_no = i;
2082                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2083                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2084                         card->qdio.out_qs[i]->bufs[j].buffer =
2085                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2086                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2087                                             skb_list);
2088                         lockdep_set_class(
2089                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2090                                 &qdio_out_skb_queue_key);
2091                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2092                 }
2093         }
2094         return 0;
2095
2096 out_freeoutq:
2097         while (i > 0)
2098                 kfree(card->qdio.out_qs[--i]);
2099         kfree(card->qdio.out_qs);
2100         card->qdio.out_qs = NULL;
2101 out_freepool:
2102         qeth_free_buffer_pool(card);
2103 out_freeinq:
2104         kfree(card->qdio.in_q);
2105         card->qdio.in_q = NULL;
2106 out_nomem:
2107         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2108         return -ENOMEM;
2109 }
2110
2111 static void qeth_create_qib_param_field(struct qeth_card *card,
2112                 char *param_field)
2113 {
2114
2115         param_field[0] = _ascebc['P'];
2116         param_field[1] = _ascebc['C'];
2117         param_field[2] = _ascebc['I'];
2118         param_field[3] = _ascebc['T'];
2119         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2120         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2121         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2122 }
2123
2124 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2125                 char *param_field)
2126 {
2127         param_field[16] = _ascebc['B'];
2128         param_field[17] = _ascebc['L'];
2129         param_field[18] = _ascebc['K'];
2130         param_field[19] = _ascebc['T'];
2131         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2132         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2133         *((unsigned int *) (&param_field[28])) =
2134                 card->info.blkt.inter_packet_jumbo;
2135 }
2136
2137 static int qeth_qdio_activate(struct qeth_card *card)
2138 {
2139         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2140         return qdio_activate(CARD_DDEV(card));
2141 }
2142
2143 static int qeth_dm_act(struct qeth_card *card)
2144 {
2145         int rc;
2146         struct qeth_cmd_buffer *iob;
2147
2148         QETH_DBF_TEXT(SETUP, 2, "dmact");
2149
2150         iob = qeth_wait_for_buffer(&card->write);
2151         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2152
2153         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2154                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2155         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2156                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2157         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2158         return rc;
2159 }
2160
2161 static int qeth_mpc_initialize(struct qeth_card *card)
2162 {
2163         int rc;
2164
2165         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2166
2167         rc = qeth_issue_next_read(card);
2168         if (rc) {
2169                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2170                 return rc;
2171         }
2172         rc = qeth_cm_enable(card);
2173         if (rc) {
2174                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2175                 goto out_qdio;
2176         }
2177         rc = qeth_cm_setup(card);
2178         if (rc) {
2179                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2180                 goto out_qdio;
2181         }
2182         rc = qeth_ulp_enable(card);
2183         if (rc) {
2184                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2185                 goto out_qdio;
2186         }
2187         rc = qeth_ulp_setup(card);
2188         if (rc) {
2189                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2190                 goto out_qdio;
2191         }
2192         rc = qeth_alloc_qdio_buffers(card);
2193         if (rc) {
2194                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2195                 goto out_qdio;
2196         }
2197         rc = qeth_qdio_establish(card);
2198         if (rc) {
2199                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2200                 qeth_free_qdio_buffers(card);
2201                 goto out_qdio;
2202         }
2203         rc = qeth_qdio_activate(card);
2204         if (rc) {
2205                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2206                 goto out_qdio;
2207         }
2208         rc = qeth_dm_act(card);
2209         if (rc) {
2210                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2211                 goto out_qdio;
2212         }
2213
2214         return 0;
2215 out_qdio:
2216         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2217         return rc;
2218 }
2219
2220 static void qeth_print_status_with_portname(struct qeth_card *card)
2221 {
2222         char dbf_text[15];
2223         int i;
2224
2225         sprintf(dbf_text, "%s", card->info.portname + 1);
2226         for (i = 0; i < 8; i++)
2227                 dbf_text[i] =
2228                         (char) _ebcasc[(__u8) dbf_text[i]];
2229         dbf_text[8] = 0;
2230         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2231                "with link type %s (portname: %s)\n",
2232                qeth_get_cardname(card),
2233                (card->info.mcl_level[0]) ? " (level: " : "",
2234                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2235                (card->info.mcl_level[0]) ? ")" : "",
2236                qeth_get_cardname_short(card),
2237                dbf_text);
2238
2239 }
2240
2241 static void qeth_print_status_no_portname(struct qeth_card *card)
2242 {
2243         if (card->info.portname[0])
2244                 dev_info(&card->gdev->dev, "Device is a%s "
2245                        "card%s%s%s\nwith link type %s "
2246                        "(no portname needed by interface).\n",
2247                        qeth_get_cardname(card),
2248                        (card->info.mcl_level[0]) ? " (level: " : "",
2249                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2250                        (card->info.mcl_level[0]) ? ")" : "",
2251                        qeth_get_cardname_short(card));
2252         else
2253                 dev_info(&card->gdev->dev, "Device is a%s "
2254                        "card%s%s%s\nwith link type %s.\n",
2255                        qeth_get_cardname(card),
2256                        (card->info.mcl_level[0]) ? " (level: " : "",
2257                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2258                        (card->info.mcl_level[0]) ? ")" : "",
2259                        qeth_get_cardname_short(card));
2260 }
2261
2262 void qeth_print_status_message(struct qeth_card *card)
2263 {
2264         switch (card->info.type) {
2265         case QETH_CARD_TYPE_OSAE:
2266                 /* VM will use a non-zero first character
2267                  * to indicate a HiperSockets like reporting
2268                  * of the level OSA sets the first character to zero
2269                  * */
2270                 if (!card->info.mcl_level[0]) {
2271                         sprintf(card->info.mcl_level, "%02x%02x",
2272                                 card->info.mcl_level[2],
2273                                 card->info.mcl_level[3]);
2274
2275                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2276                         break;
2277                 }
2278                 /* fallthrough */
2279         case QETH_CARD_TYPE_IQD:
2280                 if ((card->info.guestlan) ||
2281                     (card->info.mcl_level[0] & 0x80)) {
2282                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2283                                 card->info.mcl_level[0]];
2284                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2285                                 card->info.mcl_level[1]];
2286                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2287                                 card->info.mcl_level[2]];
2288                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2289                                 card->info.mcl_level[3]];
2290                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2291                 }
2292                 break;
2293         default:
2294                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2295         }
2296         if (card->info.portname_required)
2297                 qeth_print_status_with_portname(card);
2298         else
2299                 qeth_print_status_no_portname(card);
2300 }
2301 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2302
2303 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2304 {
2305         struct qeth_buffer_pool_entry *entry;
2306
2307         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2308
2309         list_for_each_entry(entry,
2310                             &card->qdio.init_pool.entry_list, init_list) {
2311                 qeth_put_buffer_pool_entry(card, entry);
2312         }
2313 }
2314
2315 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2316                 struct qeth_card *card)
2317 {
2318         struct list_head *plh;
2319         struct qeth_buffer_pool_entry *entry;
2320         int i, free;
2321         struct page *page;
2322
2323         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2324                 return NULL;
2325
2326         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2327                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2328                 free = 1;
2329                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2330                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2331                                 free = 0;
2332                                 break;
2333                         }
2334                 }
2335                 if (free) {
2336                         list_del_init(&entry->list);
2337                         return entry;
2338                 }
2339         }
2340
2341         /* no free buffer in pool so take first one and swap pages */
2342         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2343                         struct qeth_buffer_pool_entry, list);
2344         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2345                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2346                         page = alloc_page(GFP_ATOMIC);
2347                         if (!page) {
2348                                 return NULL;
2349                         } else {
2350                                 free_page((unsigned long)entry->elements[i]);
2351                                 entry->elements[i] = page_address(page);
2352                                 if (card->options.performance_stats)
2353                                         card->perf_stats.sg_alloc_page_rx++;
2354                         }
2355                 }
2356         }
2357         list_del_init(&entry->list);
2358         return entry;
2359 }
2360
2361 static int qeth_init_input_buffer(struct qeth_card *card,
2362                 struct qeth_qdio_buffer *buf)
2363 {
2364         struct qeth_buffer_pool_entry *pool_entry;
2365         int i;
2366
2367         pool_entry = qeth_find_free_buffer_pool_entry(card);
2368         if (!pool_entry)
2369                 return 1;
2370
2371         /*
2372          * since the buffer is accessed only from the input_tasklet
2373          * there shouldn't be a need to synchronize; also, since we use
2374          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2375          * buffers
2376          */
2377
2378         buf->pool_entry = pool_entry;
2379         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2380                 buf->buffer->element[i].length = PAGE_SIZE;
2381                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2382                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2383                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2384                 else
2385                         buf->buffer->element[i].flags = 0;
2386         }
2387         return 0;
2388 }
2389
2390 int qeth_init_qdio_queues(struct qeth_card *card)
2391 {
2392         int i, j;
2393         int rc;
2394
2395         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2396
2397         /* inbound queue */
2398         memset(card->qdio.in_q->qdio_bufs, 0,
2399                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2400         qeth_initialize_working_pool_list(card);
2401         /*give only as many buffers to hardware as we have buffer pool entries*/
2402         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2403                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2404         card->qdio.in_q->next_buf_to_init =
2405                 card->qdio.in_buf_pool.buf_count - 1;
2406         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2407                      card->qdio.in_buf_pool.buf_count - 1);
2408         if (rc) {
2409                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2410                 return rc;
2411         }
2412         /* outbound queue */
2413         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2414                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2415                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2416                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2417                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2418                                         &card->qdio.out_qs[i]->bufs[j]);
2419                 }
2420                 card->qdio.out_qs[i]->card = card;
2421                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2422                 card->qdio.out_qs[i]->do_pack = 0;
2423                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2424                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2425                 atomic_set(&card->qdio.out_qs[i]->state,
2426                            QETH_OUT_Q_UNLOCKED);
2427         }
2428         return 0;
2429 }
2430 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2431
2432 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2433 {
2434         switch (link_type) {
2435         case QETH_LINK_TYPE_HSTR:
2436                 return 2;
2437         default:
2438                 return 1;
2439         }
2440 }
2441
2442 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2443                 struct qeth_ipa_cmd *cmd, __u8 command,
2444                 enum qeth_prot_versions prot)
2445 {
2446         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2447         cmd->hdr.command = command;
2448         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2449         cmd->hdr.seqno = card->seqno.ipa;
2450         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2451         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2452         if (card->options.layer2)
2453                 cmd->hdr.prim_version_no = 2;
2454         else
2455                 cmd->hdr.prim_version_no = 1;
2456         cmd->hdr.param_count = 1;
2457         cmd->hdr.prot_version = prot;
2458         cmd->hdr.ipa_supported = 0;
2459         cmd->hdr.ipa_enabled = 0;
2460 }
2461
2462 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2463                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2464 {
2465         struct qeth_cmd_buffer *iob;
2466         struct qeth_ipa_cmd *cmd;
2467
2468         iob = qeth_wait_for_buffer(&card->write);
2469         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2470         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2471
2472         return iob;
2473 }
2474 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2475
2476 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2477                 char prot_type)
2478 {
2479         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2480         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2481         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2482                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2483 }
2484 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2485
2486 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2487                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2488                         unsigned long),
2489                 void *reply_param)
2490 {
2491         int rc;
2492         char prot_type;
2493
2494         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2495
2496         if (card->options.layer2)
2497                 if (card->info.type == QETH_CARD_TYPE_OSN)
2498                         prot_type = QETH_PROT_OSN2;
2499                 else
2500                         prot_type = QETH_PROT_LAYER2;
2501         else
2502                 prot_type = QETH_PROT_TCPIP;
2503         qeth_prepare_ipa_cmd(card, iob, prot_type);
2504         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2505                                                 iob, reply_cb, reply_param);
2506         return rc;
2507 }
2508 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2509
2510 static int qeth_send_startstoplan(struct qeth_card *card,
2511                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2512 {
2513         int rc;
2514         struct qeth_cmd_buffer *iob;
2515
2516         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2517         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2518
2519         return rc;
2520 }
2521
2522 int qeth_send_startlan(struct qeth_card *card)
2523 {
2524         int rc;
2525
2526         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2527
2528         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2529         return rc;
2530 }
2531 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2532
2533 int qeth_send_stoplan(struct qeth_card *card)
2534 {
2535         int rc = 0;
2536
2537         /*
2538          * TODO: according to the IPA format document page 14,
2539          * TCP/IP (we!) never issue a STOPLAN
2540          * is this right ?!?
2541          */
2542         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2543
2544         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2545         return rc;
2546 }
2547 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2548
2549 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2550                 struct qeth_reply *reply, unsigned long data)
2551 {
2552         struct qeth_ipa_cmd *cmd;
2553
2554         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2555
2556         cmd = (struct qeth_ipa_cmd *) data;
2557         if (cmd->hdr.return_code == 0)
2558                 cmd->hdr.return_code =
2559                         cmd->data.setadapterparms.hdr.return_code;
2560         return 0;
2561 }
2562 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2563
2564 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2565                 struct qeth_reply *reply, unsigned long data)
2566 {
2567         struct qeth_ipa_cmd *cmd;
2568
2569         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2570
2571         cmd = (struct qeth_ipa_cmd *) data;
2572         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2573                 card->info.link_type =
2574                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2575         card->options.adp.supported_funcs =
2576                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2577         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2578 }
2579
2580 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2581                 __u32 command, __u32 cmdlen)
2582 {
2583         struct qeth_cmd_buffer *iob;
2584         struct qeth_ipa_cmd *cmd;
2585
2586         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2587                                      QETH_PROT_IPV4);
2588         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2589         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2590         cmd->data.setadapterparms.hdr.command_code = command;
2591         cmd->data.setadapterparms.hdr.used_total = 1;
2592         cmd->data.setadapterparms.hdr.seq_no = 1;
2593
2594         return iob;
2595 }
2596 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2597
2598 int qeth_query_setadapterparms(struct qeth_card *card)
2599 {
2600         int rc;
2601         struct qeth_cmd_buffer *iob;
2602
2603         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2604         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2605                                    sizeof(struct qeth_ipacmd_setadpparms));
2606         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2607         return rc;
2608 }
2609 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2610
2611 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2612                 const char *dbftext)
2613 {
2614         if (qdio_error) {
2615                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2616                 QETH_DBF_TEXT(QERR, 2, dbftext);
2617                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2618                                buf->element[15].flags & 0xff);
2619                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2620                                buf->element[14].flags & 0xff);
2621                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2622                 return 1;
2623         }
2624         return 0;
2625 }
2626 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2627
2628 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2629 {
2630         struct qeth_qdio_q *queue = card->qdio.in_q;
2631         int count;
2632         int i;
2633         int rc;
2634         int newcount = 0;
2635
2636         count = (index < queue->next_buf_to_init)?
2637                 card->qdio.in_buf_pool.buf_count -
2638                 (queue->next_buf_to_init - index) :
2639                 card->qdio.in_buf_pool.buf_count -
2640                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2641         /* only requeue at a certain threshold to avoid SIGAs */
2642         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2643                 for (i = queue->next_buf_to_init;
2644                      i < queue->next_buf_to_init + count; ++i) {
2645                         if (qeth_init_input_buffer(card,
2646                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2647                                 break;
2648                         } else {
2649                                 newcount++;
2650                         }
2651                 }
2652
2653                 if (newcount < count) {
2654                         /* we are in memory shortage so we switch back to
2655                            traditional skb allocation and drop packages */
2656                         atomic_set(&card->force_alloc_skb, 3);
2657                         count = newcount;
2658                 } else {
2659                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2660                 }
2661
2662                 /*
2663                  * according to old code it should be avoided to requeue all
2664                  * 128 buffers in order to benefit from PCI avoidance.
2665                  * this function keeps at least one buffer (the buffer at
2666                  * 'index') un-requeued -> this buffer is the first buffer that
2667                  * will be requeued the next time
2668                  */
2669                 if (card->options.performance_stats) {
2670                         card->perf_stats.inbound_do_qdio_cnt++;
2671                         card->perf_stats.inbound_do_qdio_start_time =
2672                                 qeth_get_micros();
2673                 }
2674                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2675                              queue->next_buf_to_init, count);
2676                 if (card->options.performance_stats)
2677                         card->perf_stats.inbound_do_qdio_time +=
2678                                 qeth_get_micros() -
2679                                 card->perf_stats.inbound_do_qdio_start_time;
2680                 if (rc) {
2681                         dev_warn(&card->gdev->dev,
2682                                 "QDIO reported an error, rc=%i\n", rc);
2683                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2684                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2685                 }
2686                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2687                                           QDIO_MAX_BUFFERS_PER_Q;
2688         }
2689 }
2690 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2691
2692 static int qeth_handle_send_error(struct qeth_card *card,
2693                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2694 {
2695         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2696         int cc = qdio_err & 3;
2697
2698         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2699         qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
2700         switch (cc) {
2701         case 0:
2702                 if (qdio_err) {
2703                         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2704                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2705                         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2706                                        (u16)qdio_err, (u8)sbalf15);
2707                         return QETH_SEND_ERROR_LINK_FAILURE;
2708                 }
2709                 return QETH_SEND_ERROR_NONE;
2710         case 2:
2711                 if (qdio_err & QDIO_ERROR_SIGA_BUSY) {
2712                         QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
2713                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2714                         return QETH_SEND_ERROR_KICK_IT;
2715                 }
2716                 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2717                         return QETH_SEND_ERROR_RETRY;
2718                 return QETH_SEND_ERROR_LINK_FAILURE;
2719                 /* look at qdio_error and sbalf 15 */
2720         case 1:
2721                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc1");
2722                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2723                 return QETH_SEND_ERROR_LINK_FAILURE;
2724         case 3:
2725         default:
2726                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc3");
2727                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2728                 return QETH_SEND_ERROR_KICK_IT;
2729         }
2730 }
2731
2732 /*
2733  * Switched to packing state if the number of used buffers on a queue
2734  * reaches a certain limit.
2735  */
2736 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2737 {
2738         if (!queue->do_pack) {
2739                 if (atomic_read(&queue->used_buffers)
2740                     >= QETH_HIGH_WATERMARK_PACK){
2741                         /* switch non-PACKING -> PACKING */
2742                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2743                         if (queue->card->options.performance_stats)
2744                                 queue->card->perf_stats.sc_dp_p++;
2745                         queue->do_pack = 1;
2746                 }
2747         }
2748 }
2749
2750 /*
2751  * Switches from packing to non-packing mode. If there is a packing
2752  * buffer on the queue this buffer will be prepared to be flushed.
2753  * In that case 1 is returned to inform the caller. If no buffer
2754  * has to be flushed, zero is returned.
2755  */
2756 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2757 {
2758         struct qeth_qdio_out_buffer *buffer;
2759         int flush_count = 0;
2760
2761         if (queue->do_pack) {
2762                 if (atomic_read(&queue->used_buffers)
2763                     <= QETH_LOW_WATERMARK_PACK) {
2764                         /* switch PACKING -> non-PACKING */
2765                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2766                         if (queue->card->options.performance_stats)
2767                                 queue->card->perf_stats.sc_p_dp++;
2768                         queue->do_pack = 0;
2769                         /* flush packing buffers */
2770                         buffer = &queue->bufs[queue->next_buf_to_fill];
2771                         if ((atomic_read(&buffer->state) ==
2772                                                 QETH_QDIO_BUF_EMPTY) &&
2773                             (buffer->next_element_to_fill > 0)) {
2774                                 atomic_set(&buffer->state,
2775                                                 QETH_QDIO_BUF_PRIMED);
2776                                 flush_count++;
2777                                 queue->next_buf_to_fill =
2778                                         (queue->next_buf_to_fill + 1) %
2779                                         QDIO_MAX_BUFFERS_PER_Q;
2780                         }
2781                 }
2782         }
2783         return flush_count;
2784 }
2785
2786 /*
2787  * Called to flush a packing buffer if no more pci flags are on the queue.
2788  * Checks if there is a packing buffer and prepares it to be flushed.
2789  * In that case returns 1, otherwise zero.
2790  */
2791 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2792 {
2793         struct qeth_qdio_out_buffer *buffer;
2794
2795         buffer = &queue->bufs[queue->next_buf_to_fill];
2796         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2797            (buffer->next_element_to_fill > 0)) {
2798                 /* it's a packing buffer */
2799                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2800                 queue->next_buf_to_fill =
2801                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2802                 return 1;
2803         }
2804         return 0;
2805 }
2806
2807 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2808                                int count)
2809 {
2810         struct qeth_qdio_out_buffer *buf;
2811         int rc;
2812         int i;
2813         unsigned int qdio_flags;
2814
2815         for (i = index; i < index + count; ++i) {
2816                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2817                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2818                                 SBAL_FLAGS_LAST_ENTRY;
2819
2820                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2821                         continue;
2822
2823                 if (!queue->do_pack) {
2824                         if ((atomic_read(&queue->used_buffers) >=
2825                                 (QETH_HIGH_WATERMARK_PACK -
2826                                  QETH_WATERMARK_PACK_FUZZ)) &&
2827                             !atomic_read(&queue->set_pci_flags_count)) {
2828                                 /* it's likely that we'll go to packing
2829                                  * mode soon */
2830                                 atomic_inc(&queue->set_pci_flags_count);
2831                                 buf->buffer->element[0].flags |= 0x40;
2832                         }
2833                 } else {
2834                         if (!atomic_read(&queue->set_pci_flags_count)) {
2835                                 /*
2836                                  * there's no outstanding PCI any more, so we
2837                                  * have to request a PCI to be sure the the PCI
2838                                  * will wake at some time in the future then we
2839                                  * can flush packed buffers that might still be
2840                                  * hanging around, which can happen if no
2841                                  * further send was requested by the stack
2842                                  */
2843                                 atomic_inc(&queue->set_pci_flags_count);
2844                                 buf->buffer->element[0].flags |= 0x40;
2845                         }
2846                 }
2847         }
2848
2849         queue->card->dev->trans_start = jiffies;
2850         if (queue->card->options.performance_stats) {
2851                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2852                 queue->card->perf_stats.outbound_do_qdio_start_time =
2853                         qeth_get_micros();
2854         }
2855         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2856         if (atomic_read(&queue->set_pci_flags_count))
2857                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2858         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2859                      queue->queue_no, index, count);
2860         if (queue->card->options.performance_stats)
2861                 queue->card->perf_stats.outbound_do_qdio_time +=
2862                         qeth_get_micros() -
2863                         queue->card->perf_stats.outbound_do_qdio_start_time;
2864         if (rc) {
2865                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2866                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2867                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2868                 queue->card->stats.tx_errors += count;
2869                 /* this must not happen under normal circumstances. if it
2870                  * happens something is really wrong -> recover */
2871                 qeth_schedule_recovery(queue->card);
2872                 return;
2873         }
2874         atomic_add(count, &queue->used_buffers);
2875         if (queue->card->options.performance_stats)
2876                 queue->card->perf_stats.bufs_sent += count;
2877 }
2878
2879 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2880 {
2881         int index;
2882         int flush_cnt = 0;
2883         int q_was_packing = 0;
2884
2885         /*
2886          * check if weed have to switch to non-packing mode or if
2887          * we have to get a pci flag out on the queue
2888          */
2889         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2890             !atomic_read(&queue->set_pci_flags_count)) {
2891                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2892                                 QETH_OUT_Q_UNLOCKED) {
2893                         /*
2894                          * If we get in here, there was no action in
2895                          * do_send_packet. So, we check if there is a
2896                          * packing buffer to be flushed here.
2897                          */
2898                         netif_stop_queue(queue->card->dev);
2899                         index = queue->next_buf_to_fill;
2900                         q_was_packing = queue->do_pack;
2901                         /* queue->do_pack may change */
2902                         barrier();
2903                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2904                         if (!flush_cnt &&
2905                             !atomic_read(&queue->set_pci_flags_count))
2906                                 flush_cnt +=
2907                                         qeth_flush_buffers_on_no_pci(queue);
2908                         if (queue->card->options.performance_stats &&
2909                             q_was_packing)
2910                                 queue->card->perf_stats.bufs_sent_pack +=
2911                                         flush_cnt;
2912                         if (flush_cnt)
2913                                 qeth_flush_buffers(queue, index, flush_cnt);
2914                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2915                 }
2916         }
2917 }
2918
2919 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2920                 unsigned int qdio_error, int __queue, int first_element,
2921                 int count, unsigned long card_ptr)
2922 {
2923         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2924         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2925         struct qeth_qdio_out_buffer *buffer;
2926         int i;
2927
2928         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2929         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2930                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2931                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2932                 netif_stop_queue(card->dev);
2933                 qeth_schedule_recovery(card);
2934                 return;
2935         }
2936         if (card->options.performance_stats) {
2937                 card->perf_stats.outbound_handler_cnt++;
2938                 card->perf_stats.outbound_handler_start_time =
2939                         qeth_get_micros();
2940         }
2941         for (i = first_element; i < (first_element + count); ++i) {
2942                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2943                 /*we only handle the KICK_IT error by doing a recovery */
2944                 if (qeth_handle_send_error(card, buffer, qdio_error)
2945                                 == QETH_SEND_ERROR_KICK_IT){
2946                         netif_stop_queue(card->dev);
2947                         qeth_schedule_recovery(card);
2948                         return;
2949                 }
2950                 qeth_clear_output_buffer(queue, buffer);
2951         }
2952         atomic_sub(count, &queue->used_buffers);
2953         /* check if we need to do something on this outbound queue */
2954         if (card->info.type != QETH_CARD_TYPE_IQD)
2955                 qeth_check_outbound_queue(queue);
2956
2957         netif_wake_queue(queue->card->dev);
2958         if (card->options.performance_stats)
2959                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2960                         card->perf_stats.outbound_handler_start_time;
2961 }
2962 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2963
2964 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2965 {
2966         int cast_type = RTN_UNSPEC;
2967
2968         if (card->info.type == QETH_CARD_TYPE_OSN)
2969                 return cast_type;
2970
2971         if (skb->dst && skb->dst->neighbour) {
2972                 cast_type = skb->dst->neighbour->type;
2973                 if ((cast_type == RTN_BROADCAST) ||
2974                     (cast_type == RTN_MULTICAST) ||
2975                     (cast_type == RTN_ANYCAST))
2976                         return cast_type;
2977                 else
2978                         return RTN_UNSPEC;
2979         }
2980         /* try something else */
2981         if (skb->protocol == ETH_P_IPV6)
2982                 return (skb_network_header(skb)[24] == 0xff) ?
2983                                 RTN_MULTICAST : 0;
2984         else if (skb->protocol == ETH_P_IP)
2985                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2986                                 RTN_MULTICAST : 0;
2987         /* ... */
2988         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2989                 return RTN_BROADCAST;
2990         else {
2991                 u16 hdr_mac;
2992
2993                 hdr_mac = *((u16 *)skb->data);
2994                 /* tr multicast? */
2995                 switch (card->info.link_type) {
2996                 case QETH_LINK_TYPE_HSTR:
2997                 case QETH_LINK_TYPE_LANE_TR:
2998                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2999                             (hdr_mac == QETH_TR_MAC_C))
3000                                 return RTN_MULTICAST;
3001                         break;
3002                 /* eth or so multicast? */
3003                 default:
3004                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
3005                             (hdr_mac == QETH_ETH_MAC_V6))
3006                                 return RTN_MULTICAST;
3007                 }
3008         }
3009         return cast_type;
3010 }
3011 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
3012
3013 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3014                         int ipv, int cast_type)
3015 {
3016         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
3017                 return card->qdio.default_out_queue;
3018         switch (card->qdio.no_out_queues) {
3019         case 4:
3020                 if (cast_type && card->info.is_multicast_different)
3021                         return card->info.is_multicast_different &
3022                                 (card->qdio.no_out_queues - 1);
3023                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3024                         const u8 tos = ip_hdr(skb)->tos;
3025
3026                         if (card->qdio.do_prio_queueing ==
3027                                 QETH_PRIO_Q_ING_TOS) {
3028                                 if (tos & IP_TOS_NOTIMPORTANT)
3029                                         return 3;
3030                                 if (tos & IP_TOS_HIGHRELIABILITY)
3031                                         return 2;
3032                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3033                                         return 1;
3034                                 if (tos & IP_TOS_LOWDELAY)
3035                                         return 0;
3036                         }
3037                         if (card->qdio.do_prio_queueing ==
3038                                 QETH_PRIO_Q_ING_PREC)
3039                                 return 3 - (tos >> 6);
3040                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3041                         /* TODO: IPv6!!! */
3042                 }
3043                 return card->qdio.default_out_queue;
3044         case 1: /* fallthrough for single-out-queue 1920-device */
3045         default:
3046                 return card->qdio.default_out_queue;
3047         }
3048 }
3049 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3050
3051 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3052                      struct sk_buff *skb, int elems)
3053 {
3054         int elements_needed = 0;
3055
3056         if (skb_shinfo(skb)->nr_frags > 0)
3057                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3058         if (elements_needed == 0)
3059                 elements_needed = 1 + (((((unsigned long) skb->data) %
3060                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
3061         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3062                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3063                         "(Number=%d / Length=%d). Discarded.\n",
3064                         (elements_needed+elems), skb->len);
3065                 return 0;
3066         }
3067         return elements_needed;
3068 }
3069 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3070
3071 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3072         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3073         int offset)
3074 {
3075         int length = skb->len;
3076         int length_here;
3077         int element;
3078         char *data;
3079         int first_lap ;
3080
3081         element = *next_element_to_fill;
3082         data = skb->data;
3083         first_lap = (is_tso == 0 ? 1 : 0);
3084
3085         if (offset >= 0) {
3086                 data = skb->data + offset;
3087                 length -= offset;
3088                 first_lap = 0;
3089         }
3090
3091         while (length > 0) {
3092                 /* length_here is the remaining amount of data in this page */
3093                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3094                 if (length < length_here)
3095                         length_here = length;
3096
3097                 buffer->element[element].addr = data;
3098                 buffer->element[element].length = length_here;
3099                 length -= length_here;
3100                 if (!length) {
3101                         if (first_lap)
3102                                 buffer->element[element].flags = 0;
3103                         else
3104                                 buffer->element[element].flags =
3105                                     SBAL_FLAGS_LAST_FRAG;
3106                 } else {
3107                         if (first_lap)
3108                                 buffer->element[element].flags =
3109                                     SBAL_FLAGS_FIRST_FRAG;
3110                         else
3111                                 buffer->element[element].flags =
3112                                     SBAL_FLAGS_MIDDLE_FRAG;
3113                 }
3114                 data += length_here;
3115                 element++;
3116                 first_lap = 0;
3117         }
3118         *next_element_to_fill = element;
3119 }
3120
3121 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3122                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3123                 struct qeth_hdr *hdr, int offset, int hd_len)
3124 {
3125         struct qdio_buffer *buffer;
3126         int flush_cnt = 0, hdr_len, large_send = 0;
3127
3128         buffer = buf->buffer;
3129         atomic_inc(&skb->users);
3130         skb_queue_tail(&buf->skb_list, skb);
3131
3132         /*check first on TSO ....*/
3133         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3134                 int element = buf->next_element_to_fill;
3135
3136                 hdr_len = sizeof(struct qeth_hdr_tso) +
3137                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3138                 /*fill first buffer entry only with header information */
3139                 buffer->element[element].addr = skb->data;
3140                 buffer->element[element].length = hdr_len;
3141                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3142                 buf->next_element_to_fill++;
3143                 skb->data += hdr_len;
3144                 skb->len  -= hdr_len;
3145                 large_send = 1;
3146         }
3147
3148         if (offset >= 0) {
3149                 int element = buf->next_element_to_fill;
3150                 buffer->element[element].addr = hdr;
3151                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3152                                                         hd_len;
3153                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3154                 buf->is_header[element] = 1;
3155                 buf->next_element_to_fill++;
3156         }
3157
3158         if (skb_shinfo(skb)->nr_frags == 0)
3159                 __qeth_fill_buffer(skb, buffer, large_send,
3160                                 (int *)&buf->next_element_to_fill, offset);
3161         else
3162                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3163                                         (int *)&buf->next_element_to_fill);
3164
3165         if (!queue->do_pack) {
3166                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3167                 /* set state to PRIMED -> will be flushed */
3168                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3169                 flush_cnt = 1;
3170         } else {
3171                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3172                 if (queue->card->options.performance_stats)
3173                         queue->card->perf_stats.skbs_sent_pack++;
3174                 if (buf->next_element_to_fill >=
3175                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3176                         /*
3177                          * packed buffer if full -> set state PRIMED
3178                          * -> will be flushed
3179                          */
3180                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3181                         flush_cnt = 1;
3182                 }
3183         }
3184         return flush_cnt;
3185 }
3186
3187 int qeth_do_send_packet_fast(struct qeth_card *card,
3188                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3189                 struct qeth_hdr *hdr, int elements_needed,
3190                 struct qeth_eddp_context *ctx, int offset, int hd_len)
3191 {
3192         struct qeth_qdio_out_buffer *buffer;
3193         int buffers_needed = 0;
3194         int flush_cnt = 0;
3195         int index;
3196
3197         /* spin until we get the queue ... */
3198         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3199                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3200         /* ... now we've got the queue */
3201         index = queue->next_buf_to_fill;
3202         buffer = &queue->bufs[queue->next_buf_to_fill];
3203         /*
3204          * check if buffer is empty to make sure that we do not 'overtake'
3205          * ourselves and try to fill a buffer that is already primed
3206          */
3207         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3208                 goto out;
3209         if (ctx == NULL)
3210                 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3211                                           QDIO_MAX_BUFFERS_PER_Q;
3212         else {
3213                 buffers_needed = qeth_eddp_check_buffers_for_context(queue,
3214                                                                         ctx);
3215                 if (buffers_needed < 0)
3216                         goto out;
3217                 queue->next_buf_to_fill =
3218                         (queue->next_buf_to_fill + buffers_needed) %
3219                         QDIO_MAX_BUFFERS_PER_Q;
3220         }
3221         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3222         if (ctx == NULL) {
3223                 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3224                 qeth_flush_buffers(queue, index, 1);
3225         } else {
3226                 flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
3227                 WARN_ON(buffers_needed != flush_cnt);
3228                 qeth_flush_buffers(queue, index, flush_cnt);
3229         }
3230         return 0;
3231 out:
3232         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3233         return -EBUSY;
3234 }
3235 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3236
3237 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3238                 struct sk_buff *skb, struct qeth_hdr *hdr,
3239                 int elements_needed, struct qeth_eddp_context *ctx)
3240 {
3241         struct qeth_qdio_out_buffer *buffer;
3242         int start_index;
3243         int flush_count = 0;
3244         int do_pack = 0;
3245         int tmp;
3246         int rc = 0;
3247
3248         /* spin until we get the queue ... */
3249         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3250                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3251         start_index = queue->next_buf_to_fill;
3252         buffer = &queue->bufs[queue->next_buf_to_fill];
3253         /*
3254          * check if buffer is empty to make sure that we do not 'overtake'
3255          * ourselves and try to fill a buffer that is already primed
3256          */
3257         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3258                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3259                 return -EBUSY;
3260         }
3261         /* check if we need to switch packing state of this queue */
3262         qeth_switch_to_packing_if_needed(queue);
3263         if (queue->do_pack) {
3264                 do_pack = 1;
3265                 if (ctx == NULL) {
3266                         /* does packet fit in current buffer? */
3267                         if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3268                             buffer->next_element_to_fill) < elements_needed) {
3269                                 /* ... no -> set state PRIMED */
3270                                 atomic_set(&buffer->state,
3271                                         QETH_QDIO_BUF_PRIMED);
3272                                 flush_count++;
3273                                 queue->next_buf_to_fill =
3274                                         (queue->next_buf_to_fill + 1) %
3275                                         QDIO_MAX_BUFFERS_PER_Q;
3276                                 buffer = &queue->bufs[queue->next_buf_to_fill];
3277                                 /* we did a step forward, so check buffer state
3278                                  * again */
3279                                 if (atomic_read(&buffer->state) !=
3280                                                 QETH_QDIO_BUF_EMPTY){
3281                                         qeth_flush_buffers(queue, start_index,
3282                                                            flush_count);
3283                                         atomic_set(&queue->state,
3284                                                 QETH_OUT_Q_UNLOCKED);
3285                                         return -EBUSY;
3286                                 }
3287                         }
3288                 } else {
3289                         /* check if we have enough elements (including following
3290                          * free buffers) to handle eddp context */
3291                         if (qeth_eddp_check_buffers_for_context(queue, ctx)
3292                                 < 0) {
3293                                 rc = -EBUSY;
3294                                 goto out;
3295                         }
3296                 }
3297         }
3298         if (ctx == NULL)
3299                 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3300         else {
3301                 tmp = qeth_eddp_fill_buffer(queue, ctx,
3302                                                 queue->next_buf_to_fill);
3303                 if (tmp < 0) {
3304                         rc = -EBUSY;
3305                         goto out;
3306                 }
3307         }
3308         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3309                                   QDIO_MAX_BUFFERS_PER_Q;
3310         flush_count += tmp;
3311 out:
3312         if (flush_count)
3313                 qeth_flush_buffers(queue, start_index, flush_count);
3314         else if (!atomic_read(&queue->set_pci_flags_count))
3315                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3316         /*
3317          * queue->state will go from LOCKED -> UNLOCKED or from
3318          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3319          * (switch packing state or flush buffer to get another pci flag out).
3320          * In that case we will enter this loop
3321          */
3322         while (atomic_dec_return(&queue->state)) {
3323                 flush_count = 0;
3324                 start_index = queue->next_buf_to_fill;
3325                 /* check if we can go back to non-packing state */
3326                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3327                 /*
3328                  * check if we need to flush a packing buffer to get a pci
3329                  * flag out on the queue
3330                  */
3331                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3332                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3333                 if (flush_count)
3334                         qeth_flush_buffers(queue, start_index, flush_count);
3335         }
3336         /* at this point the queue is UNLOCKED again */
3337         if (queue->card->options.performance_stats && do_pack)
3338                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3339
3340         return rc;
3341 }
3342 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3343
3344 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3345                 struct qeth_reply *reply, unsigned long data)
3346 {
3347         struct qeth_ipa_cmd *cmd;
3348         struct qeth_ipacmd_setadpparms *setparms;
3349
3350         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3351
3352         cmd = (struct qeth_ipa_cmd *) data;
3353         setparms = &(cmd->data.setadapterparms);
3354
3355         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3356         if (cmd->hdr.return_code) {
3357                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3358                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3359         }
3360         card->info.promisc_mode = setparms->data.mode;
3361         return 0;
3362 }
3363
3364 void qeth_setadp_promisc_mode(struct qeth_card *card)
3365 {
3366         enum qeth_ipa_promisc_modes mode;
3367         struct net_device *dev = card->dev;
3368         struct qeth_cmd_buffer *iob;
3369         struct qeth_ipa_cmd *cmd;
3370
3371         QETH_DBF_TEXT(TRACE, 4, "setprom");
3372
3373         if (((dev->flags & IFF_PROMISC) &&
3374              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3375             (!(dev->flags & IFF_PROMISC) &&
3376              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3377                 return;
3378         mode = SET_PROMISC_MODE_OFF;
3379         if (dev->flags & IFF_PROMISC)
3380                 mode = SET_PROMISC_MODE_ON;
3381         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3382
3383         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3384                         sizeof(struct qeth_ipacmd_setadpparms));
3385         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3386         cmd->data.setadapterparms.data.mode = mode;
3387         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3388 }
3389 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3390
3391 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3392 {
3393         struct qeth_card *card;
3394         char dbf_text[15];
3395
3396         card = dev->ml_priv;
3397
3398         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3399         sprintf(dbf_text, "%8x", new_mtu);
3400         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3401
3402         if (new_mtu < 64)
3403                 return -EINVAL;
3404         if (new_mtu > 65535)
3405                 return -EINVAL;
3406         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3407             (!qeth_mtu_is_valid(card, new_mtu)))
3408                 return -EINVAL;
3409         dev->mtu = new_mtu;
3410         return 0;
3411 }
3412 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3413
3414 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3415 {
3416         struct qeth_card *card;
3417
3418         card = dev->ml_priv;
3419
3420         QETH_DBF_TEXT(TRACE, 5, "getstat");
3421
3422         return &card->stats;
3423 }
3424 EXPORT_SYMBOL_GPL(qeth_get_stats);
3425
3426 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3427                 struct qeth_reply *reply, unsigned long data)
3428 {
3429         struct qeth_ipa_cmd *cmd;
3430
3431         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3432
3433         cmd = (struct qeth_ipa_cmd *) data;
3434         if (!card->options.layer2 ||
3435             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3436                 memcpy(card->dev->dev_addr,
3437                        &cmd->data.setadapterparms.data.change_addr.addr,
3438                        OSA_ADDR_LEN);
3439                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3440         }
3441         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3442         return 0;
3443 }
3444
3445 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3446 {
3447         int rc;
3448         struct qeth_cmd_buffer *iob;
3449         struct qeth_ipa_cmd *cmd;
3450
3451         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3452
3453         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3454                                    sizeof(struct qeth_ipacmd_setadpparms));
3455         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3456         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3457         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3458         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3459                card->dev->dev_addr, OSA_ADDR_LEN);
3460         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3461                                NULL);
3462         return rc;
3463 }
3464 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3465
3466 void qeth_tx_timeout(struct net_device *dev)
3467 {
3468         struct qeth_card *card;
3469
3470         card = dev->ml_priv;
3471         card->stats.tx_errors++;
3472         qeth_schedule_recovery(card);
3473 }
3474 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3475
3476 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3477 {
3478         struct qeth_card *card = dev->ml_priv;
3479         int rc = 0;
3480
3481         switch (regnum) {
3482         case MII_BMCR: /* Basic mode control register */
3483                 rc = BMCR_FULLDPLX;
3484                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3485                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3486                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3487                         rc |= BMCR_SPEED100;
3488                 break;
3489         case MII_BMSR: /* Basic mode status register */
3490                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3491                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3492                      BMSR_100BASE4;
3493                 break;
3494         case MII_PHYSID1: /* PHYS ID 1 */
3495                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3496                      dev->dev_addr[2];
3497                 rc = (rc >> 5) & 0xFFFF;
3498                 break;
3499         case MII_PHYSID2: /* PHYS ID 2 */
3500                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3501                 break;
3502         case MII_ADVERTISE: /* Advertisement control reg */
3503                 rc = ADVERTISE_ALL;
3504                 break;
3505         case MII_LPA: /* Link partner ability reg */
3506                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3507                      LPA_100BASE4 | LPA_LPACK;
3508                 break;
3509         case MII_EXPANSION: /* Expansion register */
3510                 break;
3511         case MII_DCOUNTER: /* disconnect counter */
3512                 break;
3513         case MII_FCSCOUNTER: /* false carrier counter */
3514                 break;
3515         case MII_NWAYTEST: /* N-way auto-neg test register */
3516                 break;
3517         case MII_RERRCOUNTER: /* rx error counter */
3518                 rc = card->stats.rx_errors;
3519                 break;
3520         case MII_SREVISION: /* silicon revision */
3521                 break;
3522         case MII_RESV1: /* reserved 1 */
3523                 break;
3524         case MII_LBRERROR: /* loopback, rx, bypass error */
3525                 break;
3526         case MII_PHYADDR: /* physical address */
3527                 break;
3528         case MII_RESV2: /* reserved 2 */
3529                 break;
3530         case MII_TPISTATUS: /* TPI status for 10mbps */
3531                 break;
3532         case MII_NCONFIG: /* network interface config */
3533                 break;
3534         default:
3535                 break;
3536         }
3537         return rc;
3538 }
3539 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3540
3541 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3542                 struct qeth_cmd_buffer *iob, int len,
3543                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3544                         unsigned long),
3545                 void *reply_param)
3546 {
3547         u16 s1, s2;
3548
3549         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3550
3551         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3552         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3553                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3554         /* adjust PDU length fields in IPA_PDU_HEADER */
3555         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3556         s2 = (u32) len;
3557         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3558         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3559         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3560         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3561         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3562                                       reply_cb, reply_param);
3563 }
3564
3565 static int qeth_snmp_command_cb(struct qeth_card *card,
3566                 struct qeth_reply *reply, unsigned long sdata)
3567 {
3568         struct qeth_ipa_cmd *cmd;
3569         struct qeth_arp_query_info *qinfo;
3570         struct qeth_snmp_cmd *snmp;
3571         unsigned char *data;
3572         __u16 data_len;
3573
3574         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3575
3576         cmd = (struct qeth_ipa_cmd *) sdata;
3577         data = (unsigned char *)((char *)cmd - reply->offset);
3578         qinfo = (struct qeth_arp_query_info *) reply->param;
3579         snmp = &cmd->data.setadapterparms.data.snmp;
3580
3581         if (cmd->hdr.return_code) {
3582                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3583                 return 0;
3584         }
3585         if (cmd->data.setadapterparms.hdr.return_code) {
3586                 cmd->hdr.return_code =
3587                         cmd->data.setadapterparms.hdr.return_code;
3588                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3589                 return 0;
3590         }
3591         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3592         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3593                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3594         else
3595                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3596
3597         /* check if there is enough room in userspace */
3598         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3599                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3600                 cmd->hdr.return_code = -ENOMEM;
3601                 return 0;
3602         }
3603         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3604                        cmd->data.setadapterparms.hdr.used_total);
3605         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3606                 cmd->data.setadapterparms.hdr.seq_no);
3607         /*copy entries to user buffer*/
3608         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3609                 memcpy(qinfo->udata + qinfo->udata_offset,
3610                        (char *)snmp,
3611                        data_len + offsetof(struct qeth_snmp_cmd, data));
3612                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3613         } else {
3614                 memcpy(qinfo->udata + qinfo->udata_offset,
3615                        (char *)&snmp->request, data_len);
3616         }
3617         qinfo->udata_offset += data_len;
3618         /* check if all replies received ... */
3619                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3620                                cmd->data.setadapterparms.hdr.used_total);
3621                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3622                                cmd->data.setadapterparms.hdr.seq_no);
3623         if (cmd->data.setadapterparms.hdr.seq_no <
3624             cmd->data.setadapterparms.hdr.used_total)
3625                 return 1;
3626         return 0;
3627 }
3628
3629 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3630 {
3631         struct qeth_cmd_buffer *iob;
3632         struct qeth_ipa_cmd *cmd;
3633         struct qeth_snmp_ureq *ureq;
3634         int req_len;
3635         struct qeth_arp_query_info qinfo = {0, };
3636         int rc = 0;
3637
3638         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3639
3640         if (card->info.guestlan)
3641                 return -EOPNOTSUPP;
3642
3643         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3644             (!card->options.layer2)) {
3645                 return -EOPNOTSUPP;
3646         }
3647         /* skip 4 bytes (data_len struct member) to get req_len */
3648         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3649                 return -EFAULT;
3650         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3651         if (!ureq) {
3652                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3653                 return -ENOMEM;
3654         }
3655         if (copy_from_user(ureq, udata,
3656                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3657                 kfree(ureq);
3658                 return -EFAULT;
3659         }
3660         qinfo.udata_len = ureq->hdr.data_len;
3661         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3662         if (!qinfo.udata) {
3663                 kfree(ureq);
3664                 return -ENOMEM;
3665         }
3666         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3667
3668         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3669                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3670         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3671         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3672         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3673                                     qeth_snmp_command_cb, (void *)&qinfo);
3674         if (rc)
3675                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3676                            QETH_CARD_IFNAME(card), rc);
3677         else {
3678                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3679                         rc = -EFAULT;
3680         }
3681
3682         kfree(ureq);
3683         kfree(qinfo.udata);
3684         return rc;
3685 }
3686 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3687
3688 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3689 {
3690         switch (card->info.type) {
3691         case QETH_CARD_TYPE_IQD:
3692                 return 2;
3693         default:
3694                 return 0;
3695         }
3696 }
3697
3698 static int qeth_qdio_establish(struct qeth_card *card)
3699 {
3700         struct qdio_initialize init_data;
3701         char *qib_param_field;
3702         struct qdio_buffer **in_sbal_ptrs;
3703         struct qdio_buffer **out_sbal_ptrs;
3704         int i, j, k;
3705         int rc = 0;
3706
3707         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3708
3709         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3710                               GFP_KERNEL);
3711         if (!qib_param_field)
3712                 return -ENOMEM;
3713
3714         qeth_create_qib_param_field(card, qib_param_field);
3715         qeth_create_qib_param_field_blkt(card, qib_param_field);
3716
3717         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3718                                GFP_KERNEL);
3719         if (!in_sbal_ptrs) {
3720                 kfree(qib_param_field);
3721                 return -ENOMEM;
3722         }
3723         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3724                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3725                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3726
3727         out_sbal_ptrs =
3728                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3729                         sizeof(void *), GFP_KERNEL);
3730         if (!out_sbal_ptrs) {
3731                 kfree(in_sbal_ptrs);
3732                 kfree(qib_param_field);
3733                 return -ENOMEM;
3734         }
3735         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3736                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3737                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3738                                 card->qdio.out_qs[i]->bufs[j].buffer);
3739                 }
3740
3741         memset(&init_data, 0, sizeof(struct qdio_initialize));
3742         init_data.cdev                   = CARD_DDEV(card);
3743         init_data.q_format               = qeth_get_qdio_q_format(card);
3744         init_data.qib_param_field_format = 0;
3745         init_data.qib_param_field        = qib_param_field;
3746         init_data.no_input_qs            = 1;
3747         init_data.no_output_qs           = card->qdio.no_out_queues;
3748         init_data.input_handler          = card->discipline.input_handler;
3749         init_data.output_handler         = card->discipline.output_handler;
3750         init_data.int_parm               = (unsigned long) card;
3751         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3752                                            QDIO_OUTBOUND_0COPY_SBALS |
3753                                            QDIO_USE_OUTBOUND_PCIS;
3754         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3755         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3756
3757         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3758                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3759                 rc = qdio_initialize(&init_data);
3760                 if (rc)
3761                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3762         }
3763         kfree(out_sbal_ptrs);
3764         kfree(in_sbal_ptrs);
3765         kfree(qib_param_field);
3766         return rc;
3767 }
3768
3769 static void qeth_core_free_card(struct qeth_card *card)
3770 {
3771
3772         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3773         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3774         qeth_clean_channel(&card->read);
3775         qeth_clean_channel(&card->write);
3776         if (card->dev)
3777                 free_netdev(card->dev);
3778         kfree(card->ip_tbd_list);
3779         qeth_free_qdio_buffers(card);
3780         unregister_service_level(&card->qeth_service_level);
3781         kfree(card);
3782 }
3783
3784 static struct ccw_device_id qeth_ids[] = {
3785         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3786         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3787         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3788         {},
3789 };
3790 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3791
3792 static struct ccw_driver qeth_ccw_driver = {
3793         .name = "qeth",
3794         .ids = qeth_ids,
3795         .probe = ccwgroup_probe_ccwdev,
3796         .remove = ccwgroup_remove_ccwdev,
3797 };
3798
3799 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3800                                 unsigned long driver_id)
3801 {
3802         return ccwgroup_create_from_string(root_dev, driver_id,
3803                                            &qeth_ccw_driver, 3, buf);
3804 }
3805
3806 int qeth_core_hardsetup_card(struct qeth_card *card)
3807 {
3808         struct qdio_ssqd_desc *ssqd;
3809         int retries = 3;
3810         int mpno = 0;
3811         int rc;
3812
3813         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3814         atomic_set(&card->force_alloc_skb, 0);
3815 retry:
3816         if (retries < 3) {
3817                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3818                         dev_name(&card->gdev->dev));
3819                 ccw_device_set_offline(CARD_DDEV(card));
3820                 ccw_device_set_offline(CARD_WDEV(card));
3821                 ccw_device_set_offline(CARD_RDEV(card));
3822                 ccw_device_set_online(CARD_RDEV(card));
3823                 ccw_device_set_online(CARD_WDEV(card));
3824                 ccw_device_set_online(CARD_DDEV(card));
3825         }
3826         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3827         if (rc == -ERESTARTSYS) {
3828                 QETH_DBF_TEXT(SETUP, 2, "break1");
3829                 return rc;
3830         } else if (rc) {
3831                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3832                 if (--retries < 0)
3833                         goto out;
3834                 else
3835                         goto retry;
3836         }
3837
3838         rc = qeth_get_unitaddr(card);
3839         if (rc) {
3840                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3841                 return rc;
3842         }
3843
3844         ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
3845         if (!ssqd) {
3846                 rc = -ENOMEM;
3847                 goto out;
3848         }
3849         rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
3850         if (rc == 0)
3851                 mpno = ssqd->pcnt;
3852         kfree(ssqd);
3853
3854         if (mpno)
3855                 mpno = min(mpno - 1, QETH_MAX_PORTNO);
3856         if (card->info.portno > mpno) {
3857                 QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
3858                         "\n.", CARD_BUS_ID(card), card->info.portno);
3859                 rc = -ENODEV;
3860                 goto out;
3861         }
3862         qeth_init_tokens(card);
3863         qeth_init_func_level(card);
3864         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3865         if (rc == -ERESTARTSYS) {
3866                 QETH_DBF_TEXT(SETUP, 2, "break2");
3867                 return rc;
3868         } else if (rc) {
3869                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3870                 if (--retries < 0)
3871                         goto out;
3872                 else
3873                         goto retry;
3874         }
3875         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3876         if (rc == -ERESTARTSYS) {
3877                 QETH_DBF_TEXT(SETUP, 2, "break3");
3878                 return rc;
3879         } else if (rc) {
3880                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3881                 if (--retries < 0)
3882                         goto out;
3883                 else
3884                         goto retry;
3885         }
3886         rc = qeth_mpc_initialize(card);
3887         if (rc) {
3888                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3889                 goto out;
3890         }
3891         return 0;
3892 out:
3893         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3894                 "an error on the device\n");
3895         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3896                 dev_name(&card->gdev->dev), rc);
3897         return rc;
3898 }
3899 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3900
3901 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3902                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3903 {
3904         struct page *page = virt_to_page(element->addr);
3905         if (*pskb == NULL) {
3906                 /* the upper protocol layers assume that there is data in the
3907                  * skb itself. Copy a small amount (64 bytes) to make them
3908                  * happy. */
3909                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3910                 if (!(*pskb))
3911                         return -ENOMEM;
3912                 skb_reserve(*pskb, ETH_HLEN);
3913                 if (data_len <= 64) {
3914                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3915                                 data_len);
3916                 } else {
3917                         get_page(page);
3918                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3919                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3920                                 data_len - 64);
3921                         (*pskb)->data_len += data_len - 64;
3922                         (*pskb)->len      += data_len - 64;
3923                         (*pskb)->truesize += data_len - 64;
3924                         (*pfrag)++;
3925                 }
3926         } else {
3927                 get_page(page);
3928                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3929                 (*pskb)->data_len += data_len;
3930                 (*pskb)->len      += data_len;
3931                 (*pskb)->truesize += data_len;
3932                 (*pfrag)++;
3933         }
3934         return 0;
3935 }
3936
3937 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3938                 struct qdio_buffer *buffer,
3939                 struct qdio_buffer_element **__element, int *__offset,
3940                 struct qeth_hdr **hdr)
3941 {
3942         struct qdio_buffer_element *element = *__element;
3943         int offset = *__offset;
3944         struct sk_buff *skb = NULL;
3945         int skb_len;
3946         void *data_ptr;
3947         int data_len;
3948         int headroom = 0;
3949         int use_rx_sg = 0;
3950         int frag = 0;
3951
3952         /* qeth_hdr must not cross element boundaries */
3953         if (element->length < offset + sizeof(struct qeth_hdr)) {
3954                 if (qeth_is_last_sbale(element))
3955                         return NULL;
3956                 element++;
3957                 offset = 0;
3958                 if (element->length < sizeof(struct qeth_hdr))
3959                         return NULL;
3960         }
3961         *hdr = element->addr + offset;
3962
3963         offset += sizeof(struct qeth_hdr);
3964         if (card->options.layer2) {
3965                 if (card->info.type == QETH_CARD_TYPE_OSN) {
3966                         skb_len = (*hdr)->hdr.osn.pdu_length;
3967                         headroom = sizeof(struct qeth_hdr);
3968                 } else {
3969                         skb_len = (*hdr)->hdr.l2.pkt_length;
3970                 }
3971         } else {
3972                 skb_len = (*hdr)->hdr.l3.length;
3973                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3974                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
3975                         headroom = TR_HLEN;
3976                 else
3977                         headroom = ETH_HLEN;
3978         }
3979
3980         if (!skb_len)
3981                 return NULL;
3982
3983         if ((skb_len >= card->options.rx_sg_cb) &&
3984             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
3985             (!atomic_read(&card->force_alloc_skb))) {
3986                 use_rx_sg = 1;
3987         } else {
3988                 skb = dev_alloc_skb(skb_len + headroom);
3989                 if (!skb)
3990                         goto no_mem;
3991                 if (headroom)
3992                         skb_reserve(skb, headroom);
3993         }
3994
3995         data_ptr = element->addr + offset;
3996         while (skb_len) {
3997                 data_len = min(skb_len, (int)(element->length - offset));
3998                 if (data_len) {
3999                         if (use_rx_sg) {
4000                                 if (qeth_create_skb_frag(element, &skb, offset,
4001                                     &frag, data_len))
4002                                         goto no_mem;
4003                         } else {
4004                                 memcpy(skb_put(skb, data_len), data_ptr,
4005                                         data_len);
4006                         }
4007                 }
4008                 skb_len -= data_len;
4009                 if (skb_len) {
4010                         if (qeth_is_last_sbale(element)) {
4011                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4012                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4013                                         CARD_BUS_ID(card));
4014                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4015                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4016                                         CARD_BUS_ID(card));
4017                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4018                                 dev_kfree_skb_any(skb);
4019                                 card->stats.rx_errors++;
4020                                 return NULL;
4021                         }
4022                         element++;
4023                         offset = 0;
4024                         data_ptr = element->addr;
4025                 } else {
4026                         offset += data_len;
4027                 }
4028         }
4029         *__element = element;
4030         *__offset = offset;
4031         if (use_rx_sg && card->options.performance_stats) {
4032                 card->perf_stats.sg_skbs_rx++;
4033                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4034         }
4035         return skb;
4036 no_mem:
4037         if (net_ratelimit()) {
4038                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4039                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4040         }
4041         card->stats.rx_dropped++;
4042         return NULL;
4043 }
4044 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4045
4046 static void qeth_unregister_dbf_views(void)
4047 {
4048         int x;
4049         for (x = 0; x < QETH_DBF_INFOS; x++) {
4050                 debug_unregister(qeth_dbf[x].id);
4051                 qeth_dbf[x].id = NULL;
4052         }
4053 }
4054
4055 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4056 {
4057         char dbf_txt_buf[32];
4058         va_list args;
4059
4060         if (level > (qeth_dbf[dbf_nix].id)->level)
4061                 return;
4062         va_start(args, fmt);
4063         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4064         va_end(args);
4065         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4066 }
4067 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4068
4069 static int qeth_register_dbf_views(void)
4070 {
4071         int ret;
4072         int x;
4073
4074         for (x = 0; x < QETH_DBF_INFOS; x++) {
4075                 /* register the areas */
4076                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4077                                                 qeth_dbf[x].pages,
4078                                                 qeth_dbf[x].areas,
4079                                                 qeth_dbf[x].len);
4080                 if (qeth_dbf[x].id == NULL) {
4081                         qeth_unregister_dbf_views();
4082                         return -ENOMEM;
4083                 }
4084
4085                 /* register a view */
4086                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4087                 if (ret) {
4088                         qeth_unregister_dbf_views();
4089                         return ret;
4090                 }
4091
4092                 /* set a passing level */
4093                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4094         }
4095
4096         return 0;
4097 }
4098
4099 int qeth_core_load_discipline(struct qeth_card *card,
4100                 enum qeth_discipline_id discipline)
4101 {
4102         int rc = 0;
4103         switch (discipline) {
4104         case QETH_DISCIPLINE_LAYER3:
4105                 card->discipline.ccwgdriver = try_then_request_module(
4106                         symbol_get(qeth_l3_ccwgroup_driver),
4107                         "qeth_l3");
4108                 break;
4109         case QETH_DISCIPLINE_LAYER2:
4110                 card->discipline.ccwgdriver = try_then_request_module(
4111                         symbol_get(qeth_l2_ccwgroup_driver),
4112                         "qeth_l2");
4113                 break;
4114         }
4115         if (!card->discipline.ccwgdriver) {
4116                 dev_err(&card->gdev->dev, "There is no kernel module to "
4117                         "support discipline %d\n", discipline);
4118                 rc = -EINVAL;
4119         }
4120         return rc;
4121 }
4122
4123 void qeth_core_free_discipline(struct qeth_card *card)
4124 {
4125         if (card->options.layer2)
4126                 symbol_put(qeth_l2_ccwgroup_driver);
4127         else
4128                 symbol_put(qeth_l3_ccwgroup_driver);
4129         card->discipline.ccwgdriver = NULL;
4130 }
4131
4132 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4133 {
4134         struct qeth_card *card;
4135         struct device *dev;
4136         int rc;
4137         unsigned long flags;
4138
4139         QETH_DBF_TEXT(SETUP, 2, "probedev");
4140
4141         dev = &gdev->dev;
4142         if (!get_device(dev))
4143                 return -ENODEV;
4144
4145         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4146
4147         card = qeth_alloc_card();
4148         if (!card) {
4149                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4150                 rc = -ENOMEM;
4151                 goto err_dev;
4152         }
4153         card->read.ccwdev  = gdev->cdev[0];
4154         card->write.ccwdev = gdev->cdev[1];
4155         card->data.ccwdev  = gdev->cdev[2];
4156         dev_set_drvdata(&gdev->dev, card);
4157         card->gdev = gdev;
4158         gdev->cdev[0]->handler = qeth_irq;
4159         gdev->cdev[1]->handler = qeth_irq;
4160         gdev->cdev[2]->handler = qeth_irq;
4161
4162         rc = qeth_determine_card_type(card);
4163         if (rc) {
4164                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4165                 goto err_card;
4166         }
4167         rc = qeth_setup_card(card);
4168         if (rc) {
4169                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4170                 goto err_card;
4171         }
4172
4173         if (card->info.type == QETH_CARD_TYPE_OSN) {
4174                 rc = qeth_core_create_osn_attributes(dev);
4175                 if (rc)
4176                         goto err_card;
4177                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4178                 if (rc) {
4179                         qeth_core_remove_osn_attributes(dev);
4180                         goto err_card;
4181                 }
4182                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4183                 if (rc) {
4184                         qeth_core_free_discipline(card);
4185                         qeth_core_remove_osn_attributes(dev);
4186                         goto err_card;
4187                 }
4188         } else {
4189                 rc = qeth_core_create_device_attributes(dev);
4190                 if (rc)
4191                         goto err_card;
4192         }
4193
4194         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4195         list_add_tail(&card->list, &qeth_core_card_list.list);
4196         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4197         return 0;
4198
4199 err_card:
4200         qeth_core_free_card(card);
4201 err_dev:
4202         put_device(dev);
4203         return rc;
4204 }
4205
4206 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4207 {
4208         unsigned long flags;
4209         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4210
4211         QETH_DBF_TEXT(SETUP, 2, "removedv");
4212         if (card->discipline.ccwgdriver) {
4213                 card->discipline.ccwgdriver->remove(gdev);
4214                 qeth_core_free_discipline(card);
4215         }
4216
4217         if (card->info.type == QETH_CARD_TYPE_OSN) {
4218                 qeth_core_remove_osn_attributes(&gdev->dev);
4219         } else {
4220                 qeth_core_remove_device_attributes(&gdev->dev);
4221         }
4222         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4223         list_del(&card->list);
4224         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4225         qeth_core_free_card(card);
4226         dev_set_drvdata(&gdev->dev, NULL);
4227         put_device(&gdev->dev);
4228         return;
4229 }
4230
4231 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4232 {
4233         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4234         int rc = 0;
4235         int def_discipline;
4236
4237         if (!card->discipline.ccwgdriver) {
4238                 if (card->info.type == QETH_CARD_TYPE_IQD)
4239                         def_discipline = QETH_DISCIPLINE_LAYER3;
4240                 else
4241                         def_discipline = QETH_DISCIPLINE_LAYER2;
4242                 rc = qeth_core_load_discipline(card, def_discipline);
4243                 if (rc)
4244                         goto err;
4245                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4246                 if (rc)
4247                         goto err;
4248         }
4249         rc = card->discipline.ccwgdriver->set_online(gdev);
4250 err:
4251         return rc;
4252 }
4253
4254 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4255 {
4256         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4257         return card->discipline.ccwgdriver->set_offline(gdev);
4258 }
4259
4260 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4261 {
4262         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4263         if (card->discipline.ccwgdriver &&
4264             card->discipline.ccwgdriver->shutdown)
4265                 card->discipline.ccwgdriver->shutdown(gdev);
4266 }
4267
4268 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4269         .owner = THIS_MODULE,
4270         .name = "qeth",
4271         .driver_id = 0xD8C5E3C8,
4272         .probe = qeth_core_probe_device,
4273         .remove = qeth_core_remove_device,
4274         .set_online = qeth_core_set_online,
4275         .set_offline = qeth_core_set_offline,
4276         .shutdown = qeth_core_shutdown,
4277 };
4278
4279 static ssize_t
4280 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4281                            size_t count)
4282 {
4283         int err;
4284         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4285                                         qeth_core_ccwgroup_driver.driver_id);
4286         if (err)
4287                 return err;
4288         else
4289                 return count;
4290 }
4291
4292 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4293
4294 static struct {
4295         const char str[ETH_GSTRING_LEN];
4296 } qeth_ethtool_stats_keys[] = {
4297 /*  0 */{"rx skbs"},
4298         {"rx buffers"},
4299         {"tx skbs"},
4300         {"tx buffers"},
4301         {"tx skbs no packing"},
4302         {"tx buffers no packing"},
4303         {"tx skbs packing"},
4304         {"tx buffers packing"},
4305         {"tx sg skbs"},
4306         {"tx sg frags"},
4307 /* 10 */{"rx sg skbs"},
4308         {"rx sg frags"},
4309         {"rx sg page allocs"},
4310         {"tx large kbytes"},
4311         {"tx large count"},
4312         {"tx pk state ch n->p"},
4313         {"tx pk state ch p->n"},
4314         {"tx pk watermark low"},
4315         {"tx pk watermark high"},
4316         {"queue 0 buffer usage"},
4317 /* 20 */{"queue 1 buffer usage"},
4318         {"queue 2 buffer usage"},
4319         {"queue 3 buffer usage"},
4320         {"rx handler time"},
4321         {"rx handler count"},
4322         {"rx do_QDIO time"},
4323         {"rx do_QDIO count"},
4324         {"tx handler time"},
4325         {"tx handler count"},
4326         {"tx time"},
4327 /* 30 */{"tx count"},
4328         {"tx do_QDIO time"},
4329         {"tx do_QDIO count"},
4330 };
4331
4332 int qeth_core_get_stats_count(struct net_device *dev)
4333 {
4334         return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4335 }
4336 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4337
4338 void qeth_core_get_ethtool_stats(struct net_device *dev,
4339                 struct ethtool_stats *stats, u64 *data)
4340 {
4341         struct qeth_card *card = dev->ml_priv;
4342         data[0] = card->stats.rx_packets -
4343                                 card->perf_stats.initial_rx_packets;
4344         data[1] = card->perf_stats.bufs_rec;
4345         data[2] = card->stats.tx_packets -
4346                                 card->perf_stats.initial_tx_packets;
4347         data[3] = card->perf_stats.bufs_sent;
4348         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4349                         - card->perf_stats.skbs_sent_pack;
4350         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4351         data[6] = card->perf_stats.skbs_sent_pack;
4352         data[7] = card->perf_stats.bufs_sent_pack;
4353         data[8] = card->perf_stats.sg_skbs_sent;
4354         data[9] = card->perf_stats.sg_frags_sent;
4355         data[10] = card->perf_stats.sg_skbs_rx;
4356         data[11] = card->perf_stats.sg_frags_rx;
4357         data[12] = card->perf_stats.sg_alloc_page_rx;
4358         data[13] = (card->perf_stats.large_send_bytes >> 10);
4359         data[14] = card->perf_stats.large_send_cnt;
4360         data[15] = card->perf_stats.sc_dp_p;
4361         data[16] = card->perf_stats.sc_p_dp;
4362         data[17] = QETH_LOW_WATERMARK_PACK;
4363         data[18] = QETH_HIGH_WATERMARK_PACK;
4364         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4365         data[20] = (card->qdio.no_out_queues > 1) ?
4366                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4367         data[21] = (card->qdio.no_out_queues > 2) ?
4368                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4369         data[22] = (card->qdio.no_out_queues > 3) ?
4370                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4371         data[23] = card->perf_stats.inbound_time;
4372         data[24] = card->perf_stats.inbound_cnt;
4373         data[25] = card->perf_stats.inbound_do_qdio_time;
4374         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4375         data[27] = card->perf_stats.outbound_handler_time;
4376         data[28] = card->perf_stats.outbound_handler_cnt;
4377         data[29] = card->perf_stats.outbound_time;
4378         data[30] = card->perf_stats.outbound_cnt;
4379         data[31] = card->perf_stats.outbound_do_qdio_time;
4380         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4381 }
4382 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4383
4384 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4385 {
4386         switch (stringset) {
4387         case ETH_SS_STATS:
4388                 memcpy(data, &qeth_ethtool_stats_keys,
4389                         sizeof(qeth_ethtool_stats_keys));
4390                 break;
4391         default:
4392                 WARN_ON(1);
4393                 break;
4394         }
4395 }
4396 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4397
4398 void qeth_core_get_drvinfo(struct net_device *dev,
4399                 struct ethtool_drvinfo *info)
4400 {
4401         struct qeth_card *card = dev->ml_priv;
4402         if (card->options.layer2)
4403                 strcpy(info->driver, "qeth_l2");
4404         else
4405                 strcpy(info->driver, "qeth_l3");
4406
4407         strcpy(info->version, "1.0");
4408         strcpy(info->fw_version, card->info.mcl_level);
4409         sprintf(info->bus_info, "%s/%s/%s",
4410                         CARD_RDEV_ID(card),
4411                         CARD_WDEV_ID(card),
4412                         CARD_DDEV_ID(card));
4413 }
4414 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4415
4416 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4417                                         struct ethtool_cmd *ecmd)
4418 {
4419         struct qeth_card *card = netdev->ml_priv;
4420         enum qeth_link_types link_type;
4421
4422         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4423                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4424         else
4425                 link_type = card->info.link_type;
4426
4427         ecmd->transceiver = XCVR_INTERNAL;
4428         ecmd->supported = SUPPORTED_Autoneg;
4429         ecmd->advertising = ADVERTISED_Autoneg;
4430         ecmd->duplex = DUPLEX_FULL;
4431         ecmd->autoneg = AUTONEG_ENABLE;
4432
4433         switch (link_type) {
4434         case QETH_LINK_TYPE_FAST_ETH:
4435         case QETH_LINK_TYPE_LANE_ETH100:
4436                 ecmd->supported |= SUPPORTED_10baseT_Half |
4437                                         SUPPORTED_10baseT_Full |
4438                                         SUPPORTED_100baseT_Half |
4439                                         SUPPORTED_100baseT_Full |
4440                                         SUPPORTED_TP;
4441                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4442                                         ADVERTISED_10baseT_Full |
4443                                         ADVERTISED_100baseT_Half |
4444                                         ADVERTISED_100baseT_Full |
4445                                         ADVERTISED_TP;
4446                 ecmd->speed = SPEED_100;
4447                 ecmd->port = PORT_TP;
4448                 break;
4449
4450         case QETH_LINK_TYPE_GBIT_ETH:
4451         case QETH_LINK_TYPE_LANE_ETH1000:
4452                 ecmd->supported |= SUPPORTED_10baseT_Half |
4453                                         SUPPORTED_10baseT_Full |
4454                                         SUPPORTED_100baseT_Half |
4455                                         SUPPORTED_100baseT_Full |
4456                                         SUPPORTED_1000baseT_Half |
4457                                         SUPPORTED_1000baseT_Full |
4458                                         SUPPORTED_FIBRE;
4459                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4460                                         ADVERTISED_10baseT_Full |
4461                                         ADVERTISED_100baseT_Half |
4462                                         ADVERTISED_100baseT_Full |
4463                                         ADVERTISED_1000baseT_Half |
4464                                         ADVERTISED_1000baseT_Full |
4465                                         ADVERTISED_FIBRE;
4466                 ecmd->speed = SPEED_1000;
4467                 ecmd->port = PORT_FIBRE;
4468                 break;
4469
4470         case QETH_LINK_TYPE_10GBIT_ETH:
4471                 ecmd->supported |= SUPPORTED_10baseT_Half |
4472                                         SUPPORTED_10baseT_Full |
4473                                         SUPPORTED_100baseT_Half |
4474                                         SUPPORTED_100baseT_Full |
4475                                         SUPPORTED_1000baseT_Half |
4476                                         SUPPORTED_1000baseT_Full |
4477                                         SUPPORTED_10000baseT_Full |
4478                                         SUPPORTED_FIBRE;
4479                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4480                                         ADVERTISED_10baseT_Full |
4481                                         ADVERTISED_100baseT_Half |
4482                                         ADVERTISED_100baseT_Full |
4483                                         ADVERTISED_1000baseT_Half |
4484                                         ADVERTISED_1000baseT_Full |
4485                                         ADVERTISED_10000baseT_Full |
4486                                         ADVERTISED_FIBRE;
4487                 ecmd->speed = SPEED_10000;
4488                 ecmd->port = PORT_FIBRE;
4489                 break;
4490
4491         default:
4492                 ecmd->supported |= SUPPORTED_10baseT_Half |
4493                                         SUPPORTED_10baseT_Full |
4494                                         SUPPORTED_TP;
4495                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4496                                         ADVERTISED_10baseT_Full |
4497                                         ADVERTISED_TP;
4498                 ecmd->speed = SPEED_10;
4499                 ecmd->port = PORT_TP;
4500         }
4501
4502         return 0;
4503 }
4504 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4505
4506 static int __init qeth_core_init(void)
4507 {
4508         int rc;
4509
4510         pr_info("loading core functions\n");
4511         INIT_LIST_HEAD(&qeth_core_card_list.list);
4512         rwlock_init(&qeth_core_card_list.rwlock);
4513
4514         rc = qeth_register_dbf_views();
4515         if (rc)
4516                 goto out_err;
4517         rc = ccw_driver_register(&qeth_ccw_driver);
4518         if (rc)
4519                 goto ccw_err;
4520         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4521         if (rc)
4522                 goto ccwgroup_err;
4523         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4524                                 &driver_attr_group);
4525         if (rc)
4526                 goto driver_err;
4527         qeth_core_root_dev = root_device_register("qeth");
4528         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4529         if (rc)
4530                 goto register_err;
4531
4532         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4533                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4534         if (!qeth_core_header_cache) {
4535                 rc = -ENOMEM;
4536                 goto slab_err;
4537         }
4538
4539         return 0;
4540 slab_err:
4541         root_device_unregister(qeth_core_root_dev);
4542 register_err:
4543         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4544                            &driver_attr_group);
4545 driver_err:
4546         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4547 ccwgroup_err:
4548         ccw_driver_unregister(&qeth_ccw_driver);
4549 ccw_err:
4550         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4551         qeth_unregister_dbf_views();
4552 out_err:
4553         pr_err("Initializing the qeth device driver failed\n");
4554         return rc;
4555 }
4556
4557 static void __exit qeth_core_exit(void)
4558 {
4559         root_device_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         kmem_cache_destroy(qeth_core_header_cache);
4565         qeth_unregister_dbf_views();
4566         pr_info("core functions removed\n");
4567 }
4568
4569 module_init(qeth_core_init);
4570 module_exit(qeth_core_exit);
4571 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4572 MODULE_DESCRIPTION("qeth core functions");
4573 MODULE_LICENSE("GPL");